CN101424012B - Hemming machine - Google Patents

Abstract

The present invention provides a molding sewing machine capable of reducing the sliding sound of a center cutter. The control unit in the panel sewing sewing machine controls the driving of the main shaft motor, single needle stop mechanism, large presser foot mechanism and cutter motor, so that the stitches of the main sewing part of the two stitches are formed at the same time , form a linear slit, then form the stitches of the reinforcing seam part continuous with the main sewing part of one stitch located on the downstream side of the cloth feeding direction of the two stitches, and then feed the cloth to the cloth Direction upstream side empty feed, up to the start position of the stitch of the reinforcing seam, and then form a main seam continuous with the main seam of the other stitch located on the upstream side of the cloth feeding direction of the two stitches part of the seam, while forming a linear slit, and then form the stitch of the reinforcement seam continuous with the main seam of another seam, and when the fabric is fed empty, the center knife Lifting speed decelerates.

Description

Fillet sewing machine

Technical field

The present invention relates to a kind of fillet sewing machine, two stitchings that it can form specific length at cloth form joint-cutting simultaneously between stitching.

Background technology

Known a kind of fillet sewing machine, Yi Bian it is by carrying cloth, Yi Bian suture needle is moved up and down and make the central cutter lifting, thus make.

In this fillet sewing machine, two needle bars that keep suture needle are set, and between two needle bars, move up and down and between two stitchings, form the central cutter of joint-cutting.And the maintenance body is set, this maintenance body and two suture needles are corresponding and form a pair of slot part along the cloth direction of feed respectively respectively, so that when remaining on filler rod cloth above the main cloth, make two suture needles can pass the leading section in the cloth direction of feed downstream in making, can press the main cloth and the filler rod cloth that move up and down near the position of suture needle simultaneously.In addition, in the both sides across this maintenance body big presser foot device is set, it presses maintenance to main cloth and filler rod cloth, carries along the cloth direction of feed simultaneously.

When forming stitching, make to keep body to descend and keep filler rod cloth, Yi Bian utilize big presser foot device that main cloth and filler rod cloth are carried along the cloth direction of feed simultaneously, Yi Bian carry out moving up and down and the lifting of central cutter of needle bar.

Aforementioned needle bar and central cutter are arranged on the Sewing machines head across predetermined distance on the cloth direction of feed, for example as 1 publicity of patent documentation, realize suitableization of moving in order to prevent unnecessary action, the rising or falling speed of central cutter according to needle bar move up and down speed and pitch of feed is determined.

In addition, at the terminal part as the stitching of sewing finishing, in order to prevent bursting at the seams and strengthening sewing up of suture, sometimes implement to reinforce to make or fine and closely woven making, it is that the sewn object that will be made of main cloth and filler rod cloth is carried to common positive direction of feed and opposite direction that this reinforcing is made, overlap with established stitching and form stitching, this is fine and closely woven makes is to make making that the needle gage of stitching reduces.In addition, two stitchings always do not form with the state of alignment, also form along the state that the cloth direction of feed departs from the terminal position (abbreviating back-end location as) of two stitchings sometimes.

Patent documentation 1: the spy opens communique 2006-No. 218189

Summary of the invention

Forming back-end location under the situation of the stitching that the cloth direction of feed departs from, make in order to implement to reinforce at two stitchings, there is following method as shown in figure 17, that is, after utilizing two suture needles to finish to make 1. till the sewing position that turns back of a stitching, form reinforcing at a stitching and make 2., then, only make the empty feeding of cloth 3. return the end of making 1., only 4. another stitching is made, and 5. the formation reinforcing makes.

In addition, implementing to consider following method as shown in figure 18, namely under the fine and closely woven situation of making, after two suture needles finish to make 1., form the fine and closely woven of a stitching and make 2., then, after only 3. empty feeding is returned another and is made 1. end with cloth, only continue making usually 4. of another stitching, terminal position until regulation then, forms fine and closely woven making 5..

In addition, in practice, two stitchings overlap with the stitching that each reinforcing is made, but in Figure 17, Figure 18, in order to illustrate, launch expression in the horizontal.

In above-mentioned any method of sewing, all must carry out the empty feeding of cloth.When empty feeding, sewing machine electromotor stops, and needle bar does not move up and down, though and central cutter has formed the joint-cutting that just should form before empty feeding begins, but still proceed lifting action.This is because after making central cutter starting, and is unstable in the lifting action short time of central cutter, therefore in order to form the residue joint-cutting after the empty feeding, only makes it stop that then efficient is not high when empty feeding.

But, when empty feeding, on cloth, formed joint-cutting, concerning central cutter, do not become the cloth of resistance.Therefore, between central cutter and fixed cutting tool, can produce than carrying out cloth big slip sound when cutting off.In addition, when central cutter is moved, the action sound of the linkage component of also generation formation central cutter mechanism etc., but when empty feeding, owing to disappear because sewing machine electromotor stops to make the sound of covering these slip sounds and action sound, therefore for the operator, the action sound of these sliding sound of central cutter and central cutter mechanism is very ear-piercing.

Therefore, the present invention proposes in order to address the above problem, and its purpose is to provide a kind of fillet sewing machine, and it can make sliding sound of central cutter reduce.

Technical scheme 1 described invention, a kind of fillet sewing machine is provided, it has: sewing machine main body, it has the suture needle reciprocating mechanism, this suture needle reciprocating mechanism has two needle bars and single needle shut-down mechanism, these two needle bars keep two suture needles respectively, utilize spindle drive motor to drive and move up and down, this single needle shut-down mechanism constitutes each suture needle is stopped in lifting position respectively, this sewing machine main body utilizes the driving of aforementioned spindle drive motor, sews up main cloth and filler rod cloth by two stitchings; Keep body, it remains on filler rod cloth on the main cloth; Big presser foot device, it has across aforementioned maintenance body and descends in both sides and press a pair of presser feet wrist that keeps main cloth and filler rod cloth, and main cloth and filler rod cloth are carried along the cloth direction of feed; Central cutter mechanism, it has central cutter and cutting knife motor, this central cutter is disposed at the cloth direction of feed downstream of the needle downing position of aforementioned two suture needles, this cutting knife motor makes this central cutter lifting, this central cutter mechanism utilizes the driving of aforementioned cutting knife motor, make aforementioned central cutter carry out lifting with fixing speed, thereby between aforementioned two straight line stitchings, form the joint-cutting of linearity; And control module, it controls aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, aforementioned big presser foot device and aforementioned cutting knife motor, so that in the rear end of aforementioned two stitchings, the stitching of portion is made in the reinforcing that the position of formation cloth direction of feed rearward end has nothing in common with each other, between aforementioned two stitchings, form the joint-cutting of aforementioned linearity simultaneously, it is characterized in that, aforementioned control module is controlled aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, the driving of aforementioned big presser foot device and aforementioned cutting knife motor, so that when forming the rear end of aforementioned two stitchings, form two masters and make the stitching of portion, rearward end is positioned at the rearward end of a stitching in the more downstream of cloth direction of feed among aforementioned two stitchings, form the joint-cutting of aforementioned linearity simultaneously, then, interrupt the formation of another stitching, the master of formation and an aforementioned stitching makes the consecutive reinforcing of portion and makes the stitching of portion, then, make the end position of portion to the aforementioned interruption position of aforementioned another stitching from the reinforcing of this stitching, make cloth empty feeding to cloth direction of feed downstream, then, begin main formation of making the stitching of portion again from the aforementioned interruption position of aforementioned another stitching, form the joint-cutting of aforementioned linearity simultaneously, then, the master of formation and aforementioned another stitching makes the consecutive reinforcing of portion and makes the stitching of portion, and, when the empty feeding of cloth, make the rising or falling speed of aforementioned central cutter than the rising or falling speed deceleration of aforementioned regulation.

Aforementioned control module is to aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, the driving of aforementioned big presser foot device and aforementioned cutting knife motor is controlled, so that forming aforementioned two stitching (P, during Q) rear end, form two masters and make the stitching (P1 of portion, Q1), rearward end is positioned at the rearward end of a stitching (Q) in the more downstream of cloth direction of feed among aforementioned two stitchings, form the joint-cutting of aforementioned linearity simultaneously, then, interrupt the formation of another stitching (P), and the master of formation and an aforementioned stitching makes the stitching that portion (Q2) made in the consecutive reinforcing of portion (Q1), then, make the end position of stitching to the aforementioned interruption position of aforementioned another stitching from the reinforcing of this stitching, with cloth to the empty feeding of cloth direction of feed upstream side, then, begin main formation of making the stitching of portion (P2) again from the aforementioned interruption position of aforementioned another stitching, form the joint-cutting of aforementioned linearity simultaneously, then, the master of formation and aforementioned another stitching makes the stitching that portion (P3) made in the consecutive reinforcing of portion, and, when the empty feeding of cloth, the rising or falling speed of aforementioned central cutter is slowed down.

Here, the empty feeding of so-called cloth is to instigate needle bar to be failure to actuate and make the cloth feeding, in other words, refers to not make on cloth, only carries out the feed motion of cloth.

According to technical scheme 1 described invention, because the driving of control module control cutting knife motor, so that the rising or falling speed of central cutter is slowed down, the slip number of times of central cutter is reduced, thereby the action sound of sliding sound of central cutter and central cutter mechanism is reduced.In addition, because the slip number of times of central cutter reduces, so the wear extent of central cutter reduces, thus life-span that can elongation center's cutting knife.

Technical scheme 2 described inventions, a kind of fillet sewing machine is provided, it has: sewing machine main body, it has the suture needle reciprocating mechanism, this suture needle reciprocating mechanism has two needle bars and single needle shut-down mechanism, these two needle bars keep two suture needles respectively, utilize spindle drive motor to drive and move up and down, this single needle shut-down mechanism constitutes each suture needle is stopped in lifting position respectively, this sewing machine main body utilizes the driving of aforementioned spindle drive motor, sews up main cloth and filler rod cloth by two stitchings; Keep body, it remains on filler rod cloth on the main cloth; Big presser foot device, it has across aforementioned maintenance body and descends in both sides and press a pair of presser feet wrist that keeps main cloth and filler rod cloth, and main cloth and filler rod cloth are carried along the cloth direction of feed; Central cutter mechanism, it has central cutter and cutting knife motor, this central cutter is disposed at the cloth direction of feed downstream of the needle downing position of aforementioned two suture needles, this cutting knife motor makes this central cutter lifting, this central cutter mechanism utilizes the driving of aforementioned cutting knife motor, make aforementioned central cutter carry out lifting with fixing speed, thereby between aforementioned two straight line stitchings, form the joint-cutting of linearity; And control module, it controls aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, aforementioned big presser foot device and aforementioned cutting knife motor are controlled, so that in the rear end of aforementioned two stitchings, the fine and closely woven stitching of making portion that the position of formation rearward end has nothing in common with each other, between aforementioned two stitchings, form the joint-cutting of aforementioned linearity simultaneously, it is characterized in that, aforementioned control module is controlled aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, the driving of aforementioned big presser foot device and aforementioned cutting knife motor, so that forming aforementioned two stitching (R, during T) rear end, form two masters and make the stitching (R1 of portion, T1), rearward end is positioned at the fine and closely woven starting position of making portion (T2) of a stitching (T) in the more downstream of cloth direction of feed among aforementioned two stitchings, form the joint-cutting of linearity simultaneously, then, interrupt the formation of another stitching (R), the master of formation and an aforementioned stitching makes the consecutive fine and closely woven stitching of making portion (T2) of portion, then, make the end position of portion to the aforementioned interruption position of aforementioned another stitching from this stitching fine and closely woven, make cloth to the empty feeding of cloth direction of feed upstream side, then, begin main formation of making the stitching of portion (R2) again from the interruption position of aforementioned another stitching, form the joint-cutting of aforementioned linearity simultaneously, then, the master of formation and aforementioned another stitching makes the consecutive fine and closely woven stitching of making portion (R3) of portion, and when the empty feeding of cloth, make the rising or falling speed of aforementioned central cutter than the rising or falling speed deceleration of aforementioned regulation.

According to technical scheme 2 described inventions, because the driving of control module control cutting knife motor, so that the rising or falling speed of central cutter is slowed down, the slip number of times of central cutter is reduced, thereby the slip sound is reduced.In addition, because the slip number of times of central cutter reduces, so the wear extent of central cutter reduces, thus life-span that can elongation center's cutting knife.

Technical scheme 3 described inventions is characterized in that, in technical scheme 1 or 2 described fillet sewing machines, have setup unit, the rotating speed of the aforementioned cutting knife motor when its setting makes aforementioned cloth carry out the sky feeding.

According to technical scheme 3 described inventions, owing to can utilize the rotating speed of the central cutter of setup unit when making the empty feeding of cloth to set, therefore can freely be decelerated to the degree that each user does not mind sliding sound of central cutter.

The effect of invention

According to technical scheme 1 described invention, because the driving of control module control cutting knife motor, so that the rising or falling speed of central cutter is slowed down, the slip number of times of central cutter is reduced, thereby the slip sound is reduced.In addition, because the slip number of times of central cutter reduces, so the wear extent of central cutter reduces, thus life-span that can elongation center's cutting knife.

According to technical scheme 2 described inventions, because the driving of control module control cutting knife motor, so that the rising or falling speed of central cutter is slowed down, the slip number of times of central cutter is reduced, thereby the slip sound is reduced.In addition, because the slip number of times of central cutter reduces, so the wear extent of central cutter reduces, thus life-span that can elongation center's cutting knife.

According to technical scheme 3 described inventions, because the rotating speed of the central cutter can utilize setup unit to empty feeding cloth the time is set, therefore can freely be decelerated to the degree that each user does not mind sliding sound of central cutter.

Description of drawings

Fig. 1 is the oblique view that the whole summary of expression fillet sewing machine constitutes.

Fig. 2 is expression needle bar mechanism is positioned at the state of upper dead center position with the state that keeps two suture needles front view.

Fig. 3 (A) is the side view of needle bar, (B) is the front view of needle bar.

Fig. 4 is expression needle bar mechanism is positioned at the state of lower dead point position with the state that keeps two suture needles front view.

Fig. 5 is the center line by a needle bar in the operating state of Fig. 2, and the while is along the profile of the needle bar mechanism of the section on X-Z plane.

Fig. 6 is the expression front view of the needle bar mechanism of the hold mode state afterwards of a needle bar of releasing just.

Fig. 7 is the center line by a needle bar in the operating state of Fig. 6, and the while is along the profile of the needle bar mechanism of the section on X-Z plane.

Fig. 8 is that expression is removed the hold mode of a needle bar and moved to the front view of needle bar mechanism of the state of bottom dead centre.

Fig. 9 is the oblique view that keeps body.

Figure 10 is the oblique view of the formation of expression central cutter mechanism.

Figure 11 is the block diagram of the expression structure relevant with control device in the fillet sewing machine.

Figure 12 is the figure of the formation method of the expression stitching of reinforcing the portion of making.

Figure 13 is the flow chart of the formation method of the expression stitching of reinforcing the portion of making.

Figure 14 is the figure of the change in rotational speed of the cutting knife motor before and after the empty feeding of expression cloth.

Figure 15 is the figure of the formation method of the fine and closely woven stitching of making portion of expression.

Figure 16 is the flow chart of the formation method of the fine and closely woven stitching of making portion of expression.

Figure 17 is the figure of the formation method of the stitching of making portion of the reinforcing under the situation of rearward end position deviation of two stitchings of expression.

Figure 18 is the figure of the formation method of fine and closely woven under the situation of rearward end position deviation of two stitchings of the expression stitching of making portion.

The specific embodiment

Below, the embodiment of the fillet sewing machine that the present invention relates to is described.

(overall structure of fillet sewing machine)

Fig. 1 is the oblique view that the whole summary of expression fillet sewing machine 100 constitutes.In addition, in the present embodiment, be benchmark with X, the Y shown in each figure, Z axle, determine direction separately, Z-direction and central cutter described later to move up and down direction consistent, the plane of making operation is vertical with Z-direction, and making direction parallel with this operation planar and that carry out the cloth feeding is X-direction, make parallel with this operation planar and with the direction of X-direction quadrature be Y direction.

As shown in Figure 1, fillet sewing machine 100 is following Sewing machiness: when filler rod cloth is sewed up with respect to main cloth, formation is along the linearity joint-cutting of the direction of feed of these clothes, and forms the roughly joint-cutting of V word shape at the both ends of this linearity joint-cutting.

Fillet sewing machine 100 has: sewing machine table 11, and it becomes the operating desk of making; Sewing machine main body 12, it has not shown a pair of Libra and needle bar mechanism 10 (with reference to Fig. 2), and this needle bar mechanism 10 keeps the action of the needle bar 20 of suture needle 20a, utilizes the knee-action of needle bar 20 to form two stitchings at main cloth and filler rod cloth; As the big presser feet feed mechanism 1 of cloth feed mechanism, it carries out the conveying of the cloth that is made of main cloth and filler rod cloth; Keep body 2, its upside of main cloth from above press filler rod cloth; Central cutter mechanism 3 (with reference to Figure 10), it is supported by sewing machine main body 12, makes the central cutter 301 in the cloth direction of feed downstream that is disposed at each suture needle in the middle lifting of each suture needle 20a, thereby forms the joint-cutting of linearity at each cloth; Bevel tool mechanism 9, its position at the two ends that become the linearity joint-cutting forms the roughly joint-cutting of V word shape; And as the control device 5 (with reference to Figure 11) of control module, it carries out the control of each part mentioned above.

(needle bar mechanism)

As Fig. 2～shown in Figure 8, needle bar mechanism 10 is arranged at the front end inside of sewing machine main body 12, simultaneously or optionally make and keep a pair of needle bar 20,20 of two suture needle 20a, 20a to move up and down respectively.

Needle bar mechanism 10 has as shown in Figure 2: a pair of needle bar 20; As the needle bar bracing frame 40 of needle bar supporter, it can be distinguished and supports each needle bar 20 up or down; Needle bar reciprocating mechanism 50, it utilizes the needle bar keep a pair of needle bar 20 respectively to clasp portion 51 each needle bar 20 is moved up and down; Clutch mechanism 60, it can utilize and make its front end with respect to first connecting hole, 21 insertions of each needle bar 20, a pair of clutch components of deviating from 61, will clasp portion 51 respectively to the maintenance of needle bar 20 by needle bar, selectively switches to hold mode and releasing state; Stop mechanism 70, as shown in Figure 5, it utilizes stop component 71 that needle bar is remained on the needle bar bracing frame 40, and the front end of this stop component 71 inserts, deviates from respect to second connecting hole 22 that utilizes clutch mechanism 60 to remove the needle bar 20 under the hold mode; Keep removing switching mechanism 80, it selects certain needle bar 20 and hold mode and the releasing state of switch clutch mechanism 60 as Fig. 2, shown in Figure 5.In addition, remove switching mechanism 80 by clutch mechanism 60, stop mechanism 70, maintenance and constitute the single needle shut-down mechanism 120 that each suture needle 20,20 is stopped in lifting position respectively.

(needle bar)

As Fig. 2～shown in Figure 5, needle bar 20 by needle bar bracing frame 40 with usually supported along the state of Z-direction, under the situation of carrying out the suture needle swing, via the length direction centre position of needle bar bracing frame 40 at each needle bar 20, apply by the rotary oscillation action centered by the axle of Y direction.When carrying out this swing, the upper and lower end parts of each needle bar 20 is swung along X-direction respectively.

Each needle bar 20 is at the clava of section for the part formation tabular surface 23 of circular pole side face, carries out the maintenance of suture needle 20a in its bottom.

Needle bar 20 is under the state supported along Z-direction, and tabular surface 23 becomes along the state on Y-Z plane, is supported by needle bar bracing frame 40.On the surface of this tabular surface 23 and in the centre position of Z-direction, form slot part 24 along its length.

In addition, on the plane of tabular surface 23 and near the bottom of slot part 24 and upper end, in the mode that overlaps with this slot part 24, form first connecting hole 21 and second connecting hole 22.

First connecting hole 21 can insert for the leading section that makes clutch components 61, and is corresponding with its front end shape and form oblong-shaped.This oblong-shaped is set at, and outstanding corresponding for the essentially rectangular shape with the leading section of clutch components 61, rectangular long limit and bond length are respectively than the transverse width of the essentially rectangular shape leading section of clutch components 61 with vertically width is big slightly.

Second connecting hole 22 is positioned at the top of second connecting hole 21, and is corresponding with the leading section shape of stop component 71 described later (with reference to Fig. 5), forms main to be considered as rectangular-shapedly, and side-looking is semicircle shape.

In the inside of slot part 24, along the length direction of this slot part 24 oscillating deck 25 is installed swingably.This oscillating deck 25 is supported by the back shaft along Y direction in the centre position of first connecting hole 21 and second connecting hole 22, and by swing, move along X-direction at its both ends.That is to say that an end of oscillating deck 25 and the other end be respectively in the inside of first connecting hole 21 and second connecting hole 22, move along each connecting hole 21,22 depth direction.

In addition, oscillating deck 25 forms following shape, namely, if the one end is pushed near the deep of first connecting hole 21, then the other end is pushed out to tabular surface 23 in second connecting hole 22, if its other end is pushed near the deep of second connecting hole 22, then an end is pushed out to tabular surface 23 in first connecting hole 21.

That is to say that in same needle bar 20, if clutch components 61 inserts in first connecting hole 21, the stop component 71 that has then inserted in second connecting hole 22 is released by oscillating deck 25.In addition, if stop component 71 inserts in second connecting hole 22, the clutch components 61 that has then inserted in first connecting hole 21 is released by oscillating deck 25.

In addition, needle bar 20 utilizes its first connecting hole 21 to engage with clutch mechanism 60 and clasps portion 51 by needle bar and keep when moving up and down.On the other hand, limiting in order to utilize single needle to make when moving up and down, clutch mechanism 60 is disengaged, and utilizes second connecting hole 22 to engage with stop mechanism 70 simultaneously and remains on the needle bar bracing frame 40.

(needle bar bracing frame)

Shown in Fig. 2,4,7, needle bar bracing frame 40 forms the patchhole that needle bar 20 is inserted in two modes arranged side by side at an upper portion thereof and at a lower portion thereof on Y direction, utilize them can support each needle bar 20 up or down.

Near the support portion of the needle bar 20 of 40 bottoms, needle bar support portion, supply parts 41 such as the nonwoven fabric of supplying lubricating oil or lubricating grease etc. or urethanes are set, each needle bar 20 is configured to can be in these supply part 41 enterprising line slips.Thus, lubricating oil or lubricating grease are supplied to the sliding part between each needle bar 20 and the needle bar bracing frame 40, thereby successfully move up and down.

In addition, near the support portion of the needle bar 20 on needle bar bracing frame 40 tops, stop mechanism 70 is set, arranges at the positive downside of the stop mechanism 70 of needle bar bracing frame 40 and keep removing switching mechanism 80.Remove switching mechanism 80 for stop mechanism 70 and maintenance, the back is described in detail.

And, near the needle bar 20 that is supported by needle bar bracing frame 40, forming gathering sill 42, it guides moving up and down of square slider 55, and this square slider 55 is arranged at an end that each needle bar 20 is applied the connecting rod body 54 of the driving force that moves up and down.

In addition, the above-below direction centre position in Y direction one end of needle bar bracing frame 40 links an end of the swinging axle 43 of the wobble drive power that applies the pin swing.This swinging axle 43 to be rotatably being supported by sewing machine stand along the state of Y direction, links with the swing mechanism of swinging synchronously with moving up and down of needle bar 20.In addition, swing mechanism can utilize known structure, from 0 angular range that is adjusted to regulation, can make the suture needle that kept by each needle bar 20 carry out the suture needle swing along X-direction with amplitude of fluctuation arbitrarily as required its pendulum angle scope.That is, swing mechanism plays the effect as the suture needle swing mechanism.In addition, as previously mentioned, under the state that does not carry out the suture needle swing, adjust the swing mechanism of suture needle swing, so that each needle bar 20 becomes the state along Z-direction.

(suture needle reciprocating mechanism)

As shown in Figure 4, suture needle reciprocating mechanism 50 has: needle bar is clasped portion 51, and it supports each needle bar 20 via clutch components 60; Machine spindle 52, it utilizes the spindle drive motor that moves up and down drive source 101 as each needle bar 20 to be rotated driving; Rotary hammer 53, it is fixedly installed on the end of machine spindle 52; Connecting rod body 54, it clasps binding between the portion 51 with rotary hammer 53 and needle bar; And square slider 55, move along Z-direction its end that makes the needle bar of connecting rod body 54 clasp side.In addition, spindle drive motor 101 for example for constituted by the AC servomotor can positive and negative rotation motor, in the explanation of back, the direction of rotation of the motor reel during for driving main shaft motor 101, under the situation of not special record, all be that machine spindle 52 is driven to the positive rotation of positive direction rotation.

(clutch mechanism)

Clutch machine 60 has shown in Fig. 2, Fig. 4～7: two clutch components 61, and its insertion is through to the circular support hole 57 of each patchhole from the front that needle bar is clasped portion 51; Two follower link 62, it makes the movement of advancing and retreat of each clutch components 61 respectively; Press pressing spring 63 for two, it applies the locomotivity of direction of advance respectively to each clutch components 61 via each follower link 62; Two card claw stops 64, it ends with its card respectively under the state (retreating position) that each clutch components 61 retreats; Press pressing spring 65 for two, it blocks the direction pushing that ends to each engaging pawl 64 respectively; And remove pin 66, it can remove the operation that the card that respectively blocks claw stop 64 ends from the outside input.

Here, as Fig. 5 and shown in Figure 7, two follower link 62 form near the bending length direction central portion, and this bend P can be installed on needle bar with rotating freely and clasp in the portion 51.One end of follower link 62 and clutch components 61 link.

And, as shown in Figure 7, follower link 62 is that fulcrum rotates to the A direction by depressing from the top with bend P, one end of follower link 62 pulls clutch components 61, make clutch components 61 retreat and engage pawl 64 cards with each from first connecting hole 21 and end, thereby can remove the needle bar 20 corresponding with this clutch components 61 clasped portion 51 with respect to needle bar engaging.

In addition, as shown in Figure 5, press the card of removing by the card claw stop 64 of clutch components 61 from the top and end by removing pin 66, clutch components 61 utilizes the pretension by pressing spring 63 to advance towards first connecting hole 21, engages thereby make two needle bars 20 and needle bar clasp portion 51.

(keeping removing switching mechanism)

Keep to remove switching mechanism 80 shown in Fig. 2, Fig. 5～7, have: guiding slot part 82, its become needle bar clasp portion 51 top dead-centre slightly above the position on, be formed on the needle bar bracing frame 40; Switching part 81, it can be supported slidably along guiding slot part 82; And compressing cover 83, it prevents that switching part 81 from coming off from guiding slot part 82.

Guiding slot part 82 forms along Y direction on the top of needle bar bracing frame 40, can be slidably supported switching part 81 in the direction.

Switching part 81, it is whole to be tetragonal body shape roughly, form in the one end to the outstanding butt projection 81a of the direction of length direction quadrature, electromagnetic valve 90 (with reference to Figure 10) binding of its other end and the cylinder that is arranged at the sewing machine stand outside.

Specifically, utilize control device 5, link the electromagnetic valve 90 of cylinder via driver 90a.Cylinder uses the cylinder of 3 bit-types that have two electromagnetic valves 90 in cylinder body.And, by utilizing the driving of two electromagnetic valves 90 in control device 5 control cylinders, the position of the switching part 81 that links with electromagnetic valve 90 can be switched to three positions.Thus, can switch to left pin, crosspointer, right pin makes for these three kinds.

In addition, being not limited to cylinder, also can be solenoid.Specifically, also 2 solenoidal iron cores and switching part 81 can be linked, utilize control device 5 to control this 2 solenoids respectively.That is, so long as can electrically control the driving of switching part 81, do not limit the kind of its drive source.

Switching part 81 is supported by guiding slot part 82 towards the state of below with butt projection 81a.And, utilize the movement along Y direction of switching part 81, butt projection 81a can be switched to, on the some positions of pressing in a follower link 62, another follower link 62 or the releasing pin 66 of the clutch mechanism 60 in the time of needle bar can being clasped portion's 51 arrival top dead-centres.In addition, the outstanding length setting of this butt projection 81a is, clasps each follower link 62,62 and remove pin 66 of portion 51 with respect to the needle bar that rises to upper dead center position, can push downwards separately releasing or the required path increment of action of engaging.

(stop mechanism)

Stop mechanism 70 has shown in Fig. 5,7: support portion 72, and its upper end at needle bar bracing frame 40 has two manholes, and these two manholes are through to the patchhole of needle bar 20 from the front of this needle bar bracing frame 40; Two stop components 71, it inserts in the through hole of each support portion 72; Press pressing spring 73 for two, it applies the locomotivity of direction of advance (needle bar 20 sides) respectively to each stop component 71; And inaccessible cover 74, it supports at rear side and respectively presses pressing spring 73, covers the also through hole of inaccessible support portion 72 simultaneously.

(sewing machine table and sewing machine main body)

As shown in Figure 1, sewing machine table 11, its upper surface is parallel with X-Y plane, uses with horizontal state.It is the long oblong-shaped of X-direction that the upper surface of this sewing machine table 11 forms along the direction of feed F of cloth.The big presser foot device 1 of configuration and maintenance body 2 above sewing machine table 11 are in the downside configuration bevel tool mechanism 9 of sewing machine table 11.

In addition, the lower position of two suture needle 20a, 20a on sewing machine table 11 is provided with needle plate 13.This needle plate 13 is provided with respectively and two pin holes that suture needle 20a, 20a are corresponding, is respectively arranged with not shown horizontal still at the downside of each pin hole.That is to say, insert the suture among each suture needle 20a, 20a respectively, caught by each horizontal still of correspondence respectively at the downside of needle plate 13, twine and make with rolling off the production line of extracting out from horizontal still.

And, two pin holes of needle plate 13 roughly in the middle of and be the downstream of cloth direction of feed F, form the slit that central cutter 301 is inserted, dispose not shown fixed cutting tool, the co-operating of its utilization and central cutter 301 and cut off cloth.This fixed cutting tool is the parts that constitute central cutter mechanism 3.

Sewing machine main body 12 is made of base portion 12a and vertical 12b of body portion and arm 12c, this base portion 12a is disposed near the length direction centre position of sewing machine table 11, this vertical body 12b of portion begins upright setting from base portion 12a, this arm 12c begins to extend setting along Y direction from the upper end of vertical body 12b of portion, accommodates the primary structure of suture needle reciprocating mechanism 40 and movable cutter mechanism in arm 12c.In addition, two suture needle 20a, 20a and central cutter 301 from the front bottom of arm 12c by drop support.

(big presser foot device)

Big presser foot device 1 has: big presser feet 15,15, and it presses the both ends that are arranged at the width that keeps the filler rod cloth on the body 2 from the top respectively; Supporter 16, it supports these big presser feets 15,15; Not shown cylinder, it moves up and down big presser feet 15,15 via supporter 16; And the presser foot motor 102 different with spindle drive motor 101, it makes filler rod cloth and the main cloth pressed by big presser feet 15,15 mobile in the cloth direction of feed via supporter 16.

Each big presser feet 15,15 is respectively OBL flat board, respectively so that length direction supported by supporter 16 along the state of X-direction.In addition, each big presser feet 15,15 is supported for, and makes its planar surface parallel with X-Y plane.And, can utilize the driving of cylinder to switch to two positions up and down, the upper surface from sewing machine table 11 when last position leaves, and becomes the height of the upper surface of sewing machine table 11 when upper/lower positions.In addition, two big presser feets 15,15 supported with the state that separates are so that at least can be by keeping the vertical plate part 32 of body 2 between them.

Supporter 16 is on sewing machine table 11, and is supported movably along X-direction, two big presser feets 15 that are configured to support, 15 both sides that move up and down the path by two suture needle 20a, 20a.In addition, supporter 16 is driven by presser foot motor 102 via not shown ball screw framework.

(maintenance body)

Keep body 2 shown in Fig. 1,9, have: base plate 31, it is rectangular shape flat board; Vertical plate part 32, it is along the length direction of base plate 31, and the surface vertically uprightly arranges thereon; Guide member 33, it avoids central cutter 301 and guiding filler rod cloth B in the cloth direction of feed end of downstream side of vertical plate part 32; And longitudinal guide portion 34, its channeling conduct so that the both ends of the width of filler rod cloth carry respectively along the two sides of vertical plate part 32.

In addition, keep body 2 to be supported by the not shown supporting mechanism with cylinder, when not using, as shown in Figure 1, leave and keep out of the way from the pin upper/lower positions of two suture needle 20a, 20a.And, in use, utilize the driving of cylinder to be arranged on the needle plate position.

Base plate 31 forms oblong-shaped, is supported for, and its length direction is parallel with X-direction in use, and the upper surface of its bottom surface and sewing machine table 11 over against and put and carry.In addition, at the cloth direction of feed leading section of base plate 31, form otch 31a, 31a as the roughly U word shape of slot part, they are respectively applied to make two suture needle 20a, the 20a pin that falls.

Near the part of vertical plate part 32 guide member 33, its integral body is OBL flat board, at the upper surface of base plate 31, with the state that length direction aligns with base plate 31, vertically uprightly be arranged on the centre position of width (Y direction) of this base plate 31.That is, keep body 2, observe from its length direction, base plate 31 and vertical plate part 32 are formed integrally as the word of falling T shape.

And, if filler rod cloth on the needle plate 13 with main cloth on side superimposed ground arrange, then put from the top to carry and keep body 2, the both ends of the width of filler rod cloth are turned back and upright upward from the width both ends of base plate 31, and the width both ends that make filler rod cloth along the side of the both sides of vertical plate part 32, are kept by big presser feet 15,15 respectively.That is, make filler rod cloth become along from a side of vertical plate part 32 via the state of base plate 31 to another side 32.Like this, be set to be wound under the state that keeps body 2 at filler rod cloth, carry filler rod cloth and main cloth on one side, in the both sides of vertical plate part 32 utilize two piece suture needle 20a, 20as make on one side, the joint-cutting that forms linearity that moves up and down of central cutter 301 utilized simultaneously.

As mentioned above, at the width both ends of filler rod cloth, in order to keep respectively along the state of the two sides of vertical plate part 32, near the two sides of vertical plate part 32 and relative mode two flat longitudinal guide portions 34,34 to be set respectively.These longitudinal guide portions 34 are in cloth direction of feed upstream-side-end, with the mode bending of the gap enlargement of vertical plate part 32, and keep fixing gap in the downstream.That is to say that width one end of inserting filler rod cloth in the gap of each longitudinal guide portion 34 and vertical plate part 32 is for keeping this end along the state channeling conduct of a side of vertical plate part 32.

In addition, at the downstream of the cloth direction of feed F that keeps body 2, configuration center cutting knife 301 on the extended line of vertical plate part 32.Because the width both ends of filler rod cloth move to the downstream of cloth direction of feed F respectively along vertical plate part 32, therefore guide member 33 is set, do not split so that can not cut by central cutter 301.This guide member 33 forms with the end of downstream side of the cloth direction of feed F of this vertical plate part 32, is divided into two strands towards cloth direction of feed F simultaneously, and forming plan view shape becomes roughly V word shape.And guide member 33 in order more effectively filler rod cloth to be begun channeling conduct from central cutter, is configured to as far as possible close central cutter 301, thereby covers this central cutter 301 from both sides.Utilize this shape, when the cloth feeding, thereby the width both ends of filler rod cloth, respectively to the direction guiding of leaving from vertical plate part 32 guide to the direction of avoiding central cutter 301 by the gap between longitudinal guide portion 34 and the guide member 33.

(cutter mechanism)

But Figure 10 is the oblique view of the dissengaged positions of needle bar reciprocating mechanism 50 and central cutter mechanism 3.

Central cutter mechanism 3 has: central cutter 301, and it is by moving up and down the joint-cutting that forms linearity; Not shown fixed cutting tool, it is fixed in the below of needle plate 13, impels the cut-out of cloth simultaneously with central cutter 301 sliding-contacts; Cutting knife rod 302, it can be slidably supported in arm 12c along Z-direction at bottom mounting center cutting knife 301 simultaneously; Cutting knife motor 303, it is the stepping motor that moves up and down that carries out central cutter 301; A plurality of connecting rod bodies 305, it moves up and down driving force via with respect to the eccentric eccentric cam of installing 304 of the output shaft 303b of cutting knife motor 303 to 302 transmission of cutting knife rod; As the cylinder 306 of actuator, but its drive source that becomes the dissengaged positions (upper/lower positions) of central cutter 301 and limit the change action of dissengaged positions (going up the position); And retainer 307, it makes the outstanding plunger of cylinder 306 stop at the assigned position place.

Central cutter mechanism 3, when cylinder 306 is in going-back position (state of Figure 10), but the rotary driving force that becomes cutting knife motor 303 is transformed to the power of up and down reciprocatingly moving of central cutter 301 and the dissengaged positions that transmits, when cylinder 306 is in progressive position (omit diagram), can switch to the restriction dissengaged positions that the rotary driving force that do not make cutting knife motor 303 transmits to central cutter.

If under the state that cylinder 306 retreats, cutting knife motor 303 is rotated driving, then utilize the eccentric cam 304 that is installed on the output shaft 303b of Y direction, via a plurality of connecting rod bodies 305 cutting knife rod 302 and central cutter 301 are moved up and down, thereby cut off action.

On the other hand, when cylinder 306 was in the state that advances, a plurality of connecting rod bodies 305 became the transmission of power that do not make cutting knife motor 303 to the configuration of cutting knife rod 302, and central cutter 301 maintains the state that keep out of the way the top of needle plate 13.

Therefore, utilize the driving of cylinder 306, but switch to dissengaged positions and the restriction dissengaged positions of central cutter 301.

In addition, central cutter 301 is cut off clothes and rising or falling speed when forming the joint-cutting of linearity, corresponding with the transporting velocity of the cloth that is undertaken by big presser foot device 1, be set at the rising or falling speed of predesignating, be stored among the ROM 152 described later, cutting knife motor 303 be stored in ROM 152 in the corresponding speed of rising or falling speed be rotated driving.

(bevel tool mechanism)

Bevel tool mechanism 9 as shown in Figure 1, below sewing machine table 11, be disposed at big presser feet 15,15 pass through on the path of big presser foot device 1, by piercing through filler rod cloth and the main cloth that is transported by big presser foot device 1 from the below with bevel tool 91, form the roughly joint-cutting of V word shape in the position at the two ends that become the linearity joint-cutting.

That is, bevel tool mechanism 9 has: two bevel tools 91,91, and it has at interval and disposes along cloth direction of feed F; And not shown moving up and down motor, it moves up and down each bevel tool 91,91 respectively.

Each bevel tool 91 is made of the cutting knife of a pair of triangle, and the cutting knife of this a pair of triangle is arranged side by side in the mode that the shape of observing from its front becomes V word shape, so that this leading section is supported towards the state of top.And, move up and down with motor by utilization and to move to the below from the below of the upper surface of sewing machine table 11, can form the joint-cutting of V word shape at cloth.In addition, each bevel tool 91 can be regulated the angle between the cutting knife of a pair of triangle, thereby can be corresponding with the interval of two stitchings that obtained by two suture needle 20a, 20a.

And two bevel tools 91 are supported for respectively, and the peristome of the joint-cutting of the formed V word of each cutting knife shape is opposite each other.In addition, two bevel tools 91 can be regulated it at interval.

If formed the cloth of two stitchings and linearity joint-cutting, by big presser foot device 1 be delivered to bevel tool mechanism 9 directly over the position, then bevel tool mechanism 9 moves up and down by making two bevel tools 91,91 end positions separately at stitching, forms the joint-cutting of two V word shapes at cloth.That is to say, utilize bevel tool mechanism 9, at the joint-cutting both ends of linearity, form a joint-cutting of the end of the nearer side from joint-cutting one end to two stitching of this linearity, and another joint-cutting of the end of the nearer side from joint-cutting the other end to two stitching of linearity.

(control device)

As shown in figure 11, on control device 5, connect following parts via not shown imput output circuit: display floater 84, it shows authentic language or the image information of informing to the user; Configuration switch 85, itself and display floater 84 together arrange, and are used for carrying out picture and selecting and the instruction input of various settings; Numerical key 86, it is used for input value when carrying out various setting, and imports determining and cancellation of this numerical value; And starting switch 87, the beginning that its input is made.Here, configuration switch 85 and numerical key 86, the setup unit of the rotating speed of the cutting knife motor 303 when setting empty feeding cloth.

In addition, on control device 5, be connected to become spindle drive motor 101, presser foot motor 102, the cutting knife motor 303 of its control object respectively via driver 101a, 102a, 303a.In addition, keep body 2 the cylinder that moves up and down, carry out the cylinder of big presser feet 15,15 lifting and carry out respectively the moving up and down with motor (omitting diagram) of bevel tool 91,91 lifting, be connected with control device 5 via driver.In addition, the electromagnetic valve 308 that connects the cylinder 306 of the operating state of main dispatching centre cutting knife 301 and non-action status via driver 308a.In addition, on control device 5, connect the suture needle wobbling motor 105 that links with swinging axle 43 for the suture needle swing of carrying out suture needle 20a, 20a via driver 105a.In addition, the electromagnetic valve 90 that on control device 5, connects the cylinder that is used for change switching part 81 positions via driver 90a.

Control device 5 has: CPU 151, and it carries out various calculation process; ROM 152, wherein write the control program, control data or the various stitch data that make fillet sewing machine 100 carry out various functions, action (aftermentioned); And RAM 153, it is in the working region storage various data relevant with the processing of CPU 151.

Storage control program in ROM 152, this control program control spindle drive motor 101, single needle shut-down mechanism 120, the driving of big presser foot device 1 and cutting knife motor 303, so that when forming the rear end of two stitchings, form two masters and make the P1 of portion, the stitching of Q1, until two stitching P, rearward end is positioned at the rearward end n3 of a stitching Q in the downstream of cloth direction of feed among the Q, utilize central cutter 301 to form the joint-cutting of linearity simultaneously, then, interrupt the formation of another stitching P, and the master of formation and a stitching Q makes the stitching that the Q2 of portion is made in the consecutive reinforcing of stitching of the Q1 of portion, then, make the end position n6 of stitching of the Q2 of portion from the reinforcing of this stitching Q to the interruption position of another stitching P (being the starting position that the master of another stitching P makes the stitching of the P2 of portion) n3, make cloth empty feeding to cloth direction of feed downstream, then, begin main formation of making the stitching of the P2 of portion again from the interruption position n3 of another stitching P (with main to make the P1 of portion mutually continuous), form the joint-cutting of linearity simultaneously, then, the master of formation and another stitching P makes the stitching that the P3 of portion is made in the consecutive reinforcing of the P2 of portion, and, at the end position n6 that makes the Q2 of portion from the reinforcing of above-mentioned stitching Q during to the empty feeding of the cloth of the interruption position n3 of another stitching P, the rising or falling speed of the rising or falling speed that makes central cutter 301 during than the joint-cutting that forms linearity slows down.

That is, by CPU 151 executive control programs, control device 5 plays the effect as control module.

In addition, here so-called reinforcing is made the stitching of portion and is represented following stitching, namely, make cloth direction of feed oppositely (opposite direction of the arrow F direction of Fig. 1), or suture needle is swung in the cloth direction of feed, on the stitching that has formed, overlap ground and form stitching, the so-called main stitching of portion of making, being illustrated in common cloth direction of feed (the arrow F direction of Fig. 1) goes up the conveying cloth and forms stitching, it is common stitching, here, for will this common stitching and above-mentioned reinforcing make the Q2 of portion, P3 difference, be called the main stitching of portion of making.

(the stitching formation method of portion is made in reinforcing)

Below, with reference to Figure 12, Figure 13, to utilizing fillet sewing machine 100, in the rear end of two stitchings (P, Q), the stitching formation method the when stitching of portion (Q2, P3) is made in the reinforcing that the position (back-end location) of formation rearward end n3, n8 has nothing in common with each other describes.

Make beginning switch etc. if pressed by the operator, then the CPU 151 of control device 5 passes through executive control program, control the driving of the electromagnetic valve 90 of spindle drive motor 101, cylinder, big presser foot device 1 and carry out the formation of stitching, utilize the driving of cylinder 306 and cutting knife motor 303 to make central cutter 301 liftings simultaneously, thereby between two stitching P, Q, form the joint-cutting of linearity.In addition, the rising or falling speed of the central cutter 301 when forming the joint-cutting of this linearity as mentioned above, utilizes with respect to the cloth feed speed of being undertaken by big presser foot device 1 and sets and the regulation rising or falling speed of storage drives.In addition, in the following description, fillet sewing machine 100 describes as the Sewing machines that constitutes in the following manner, this Sewing machines becomes and makes two needle bars 20,20 clasp the state that can be made by crosspointer of portion's 51 engagings with respect to needle bar all the time when initial power connection or the filler rod of regulation when finishing.

As shown in Figure 12 and Figure 13, if CPU 151 executive control programs, then at first, CPU 151 drives the electromagnetic valve 90 of cylinder and switching part 81 is moved, and moves to the position (step S21) that two suture needle 20a, 20a are moved up and down.

At this moment, the electromagnetic valve 90 of CPU 151 by making cylinder drives, and switching part 81 is moved so that butt projection 81a be arranged between two follower link 62 on the needle bar 20 above.

Then, CPU 151 judges whether the formation that the master of ongoing two stitchings (P, Q) at present makes certain stitching of portion (P1, Q1) finishes, and namely the stitching that rearward end is positioned at the more downstream of cloth direction of feed among two stitchings (P, Q) forms whether finish (step S22).In addition, this judgement can judge when the end that the main stitching of making portion (P1, Q1) forms as described in the present embodiment, but also can judge according to the length data of making of the each several part of predefined stitching (P, Q).Here, at equal (the step S22: not) under the unclosed situation of formation that CPU 151 judges main any stitching of making portion (P1, Q1), CPU 151 drives by making spindle drive motor 101, big presser foot device 1, the master who forms present ongoing two stitchings (P, Q) makes the stitching of portion (P1, Q1), make central cutter 301 liftings by driving cutting knife motor 303 simultaneously, form the joint-cutting (step S23) of linearity.

Here, make the master who forms two stitchings (P, Q) under the situation of stitching of portion (P1, Q1), form by the pin that falls of the order according to needle downing position n0, n1, n2, n3.

And CPU 151 continues to form the main stitching of making portion (P1, Q1), finishes until judging that main certain stitching of making portion (P1, Q1) forms.

In step S22, judge the main (P1 of portion that makes at CPU 151, Q1) certain stitching forms under the situation about finishing (step S22: be), CPU 151 drives the electromagnetic valve 90 of cylinder, in order only to drive and to be judged as the side that main stitching formation of making portion finishes, it is the relevant needle bar 20 (right side) of formation of side's stitching in the rearward end more downstream that is positioned at the cloth direction of feed, switching part 81 is moved, so that the butt projection 81a of switching part 81 is positioned at the top that is arranged at the follower link 62 on another needle bar 20 (left side) that will stop, thereby a suture needle 20a is moved up and down, interrupt simultaneously being formed by the stitching that another root suture needle 20a carries out, become the state (step S24) that can only utilize a suture needle 20a to make.

Then, CPU 151 judges that the reinforcing of (right side) stitching (Q) makes the formation of the stitching of portion (Q2) and whether finish (step S25).Here, the stitching of making portion (Q2) in the reinforcing of CPU 151 stitchings of judgement (Q) forms (step S25: not) under the unclosed situation, CPU 151 drives by making spindle drive motor 101, presser foot motor 102, via big presser foot device 1 cloth is carried to cloth direction of feed upstream side, a suture needle 20a is moved up and down, thereby the stitching (step S26) of portion (Q2) is made in the reinforcing that forms a stitching (Q).

Here, make in the reinforcing that forms a stitching (Q) shown in Figure 12 under the situation of stitching of portion (Q2), form by the pin that falls of the order according to needle downing position n3, n4, n5, n6.And CPU 151 continues formation and reinforces the stitching of making portion (Q2), until judging that reinforcing the stitching of making portion (Q2) forms end.

In step S25, CPU 151 judges that reinforcing the stitching of making portion (Q2) forms under the situation about finishing (step S25: be), and CPU 151 switches to another root 20a (left pin) with employed suture needle from a suture needle 20a (right pin).

Here, when switching to another single needle (left pin) owing to the suture needle 20a, the 20a that in will making, use from single needle (right pin), can not once switch, therefore switch in the following order.

If the final needle falling point (n6) that a suture needle 20a (right pin) makes portion since a reinforcing rises, then CPU 151 makes the electromagnetic valve 90 of cylinder drive immediately and makes the butt projection 81a of switching part 81 move to the top of removing pin 66, by arriving top dead-centre by needle bar 20 clutch components 61 is advanced, become the state (step S27) that two suture needle 20a, 20a are moved up and down and can utilize crosspointer to make.

And CPU 151 stops the driving of spindle drive motor 101 each several parts such as grade in the moment of a pair of Libra (not shown) the arrival top dead-centre of sewing machine main body 12, and (step S28) made in temporary transient interruption.

At this moment, CPU 151 slows down cutting knife motor 303, utilizes configuration switch 85 and numerical key 86 predefined rotating speeds (step S29) to become.Like this, the rising or falling speed of central cutter 301 is slowed down, the slow fixing speed of rising or falling speed when becoming than the joint-cutting that forms above-mentioned linearity.This be because, stable in order to realize that central cutter 301 drives, even it is stopped, therefore when not cutting off cloth, reduce the number of times that central cutter 301 and fixed cutting tool slide, the generation noise alleviates when sliding thereby make, and prevents the wearing and tearing of each cutting knife as far as possible.

Then, CPU 151 is after slowing down the rotary speed of cutting knife motor 303, big presser foot device 1 is driven and with cloth to the direction of feed downstream (the F direction among Figure 12) carry, make the stitching of portion (Q2) and form so that finish the reinforcing of a stitching (Q), do not carry out moving up and down of suture needle and make needle downing position move to the interruption position (n3) of another (left side) stitching (P) in forming to go up (step S30: empty feeding step).

Then, the suture needle 20a, the 20a that will use during CPU 151 will make switch to another root single needle (left pin) (step S31) from crosspointer.

When (left pin) switches from crosspointer to single needle, because CPU 151 stops the suture needle (right pin) among two suture needle 20a, the 20a up, the electromagnetic valve 90 of cylinder is driven, thereby switching part 81 is moved, so that butt projection 81a is positioned at the top of the follower link 62 on the needle bar 20 that is arranged at a suture needle 20a (right pin) that will stop, and make making spindle drive motor 101 counter-rotating butt projection 81a and follower link 62 above butt, thereby push under the state of follower link 62, spindle drive motor 101 is stopped.Like this, the clutch components 61 corresponding with the needle bar 20 of a suture needle 20a (right pin) retreats, and the suture needle 20a, the 20a that use in making switch to single needle (left pin) from crosspointer.

Then, CPU151 makes the rotary speed of the cutting knife motor 303 of deceleration accelerate to the preceding rotary speed (step S32) of slowing down.Like this, be used for forming again the ready of stitching and joint-cutting.

Here, the variation of the rotary speed of cutting knife motor 301 is described, as shown in figure 14, before in step S29, slowing down, all corresponding with the cloth feed speed and utilize predefined rotating speed driving.And, in step S29, if receive the command signal that should slow down from control device 5, then reduce speed now, when the empty feeding of step S30, the state that the rising or falling speed with than the joint-cutting that forms linearity the time slows down continues to drive.

And in step S32, the command signal of returning the empty feeding of cloth rotating speed before again is sent to cutting knife motor 303 from control device 5, after empty feeding has just finished, drives with original rotating speed.

Then, CPU 151 judges whether the formation that the master of another stitching (P) makes the stitching of portion (P2) finishes (step S33).Here, judge that at CPU 151 stitching that the master of another stitchings (P) makes portion (P2) forms (step S33: not) under the unclosed situation, CPU 151 drives by making spindle drive motor 101, presser foot motor 102, via big presser foot device 1 cloth is carried to cloth direction of feed downstream, another root suture needle 20a is moved up and down, the interruption position (n3) that forms from another (left side) stitching (P) begins main formation of making the stitching of portion (P2) again, begins form (the step S34) of the linearity joint-cutting that undertaken by central cutter 301 simultaneously again.

Here, make the master who forms another stitching P shown in Figure 12 under the situation of stitching of portion (P2), form by the pin that falls of the order according to needle downing position n3, n7, n8.

And CPU 151 continues to form the main stitching of making portion (P2), finishes until judging that the main stitching of making portion (P2) forms.

In step S33, judge that at CPU 151 the main stitching of making portion (P2) forms under the situation about finishing (step S33: be), CPU 151 judges that it is that bundle finishes (step S35) that the formation of the stitching of portion (P3) is made in the reinforcing of another (left side) stitching (P).Here, judge (step S35: not) under the unclosed situation of formation of reinforcing the stitching of making portion (P3) at CPU 151, CPU 151 drives by making spindle drive motor 101, presser foot motor 102, via big presser foot device 1 cloth is carried to cloth direction of feed upstream side, another root suture needle 20a is moved up and down, thereby the stitching (step S36) of portion (P3) is made in the reinforcing that forms another stitching (P).

Here, make portion (P3) in the reinforcing of another stitching (P) shown in Figure 12 and form under the situation of stitching, form by the pin that falls of the order according to needle downing position n8, n9, n10, n11.

And CPU 151 continues formation and reinforces the stitching of making portion (P3), until judging that reinforcing the stitching of making portion (P3) forms end.

In step S35, the stitching of making portion (P3) in the reinforcing of CPU 151 another stitchings of judgement (P) forms under the situation about finishing (step S35: be), and CPU 151 stops the cloth feeding of being undertaken by big presser foot device 1, thereby finishes this processing.

(action effect)

According to fillet sewing machine 100, control device 5 is by utilizing CPU 151 control spindle drive motors 101, the electromagnetic valve 90 of cylinder, big presser foot device 1, and the driving of cutting knife motor 303, forming two stitching P, during the rear end of Q, form the main P1 of portion that makes, the stitching of Q1, until two stitching P, rearward end is positioned at the rearward end of a stitching in the more downstream of cloth direction of feed among the Q, form the joint-cutting of linearity simultaneously, then, interrupt the formation of another stitching, the master of formation and a stitching Q makes the stitching that the Q2 of portion is made in the consecutive reinforcing of the Q1 of portion, then, make the end position of portion to the aforementioned interruption position of aforementioned another stitching from the reinforcing of this stitching, make cloth empty feeding towards cloth direction of feed downstream, then, begin main formation of making the stitching of the P2 of portion again from the aforementioned interruption position of another stitching P, form the joint-cutting of linearity simultaneously, then, the master of formation and another stitching P makes the stitching that the P3 of portion is made in the consecutive reinforcing of the P2 of portion, and, when the empty feeding of cloth, the rising or falling speed of central cutter 301 is slowed down.

Like this, because the driving of control device 5 control cutting knife motor 301, so that when empty feeding cloth, the rising or falling speed of central cutter 301 is slowed down, the slip number of times of central cutter 301 is reduced, thereby the slip sound is reduced.In addition, because the slip number of times of central cutter 301 reduces, so the wear extent of central cutter 301 reduces, life-span that can elongation center's cutting knife 301.

(fine and closely woven stitching formation method of making portion)

In addition, the reinforcing that the invention is not restricted to above-mentioned embodiment is made.For example, also can utilize Figure 15, method shown in Figure 16, form the fine and closely woven portion of making at the stitching of sewing finishing.Below, with reference to Figure 15, Figure 16, the stitching formation method during the fine and closely woven stitching of making the T2 of portion, R3 that the position that forms rearward end w6, w13 in the rear end of two stitching R, T is had nothing in common with each other describes.

Specifically, the following control program of storage in ROM 152, this control program control spindle drive motor 101, single needle shut-down mechanism 120, the driving of big presser foot device 1 and cutting knife motor 303, so that forming two stitching R, during the rear end of T, form two masters and make the R1 of portion, the stitching of T1, rearward end is positioned at the fine and closely woven starting position w1 that makes the T2 of portion of a stitching T in the more downstream of cloth direction of feed among two stitchings, form the joint-cutting of linearity simultaneously, then, interrupt the formation of another stitching, the master of formation and a stitching T makes the consecutive fine and closely woven stitching of making the T2 of portion of the T1 of portion, then, from the fine and closely woven end position w6 of the T2 of portion that makes of this stitching T to interruption position (being the fine and closely woven starting position of making the stitching of the R2 of portion of another stitching R) w1 of another stitching R, make cloth to the empty feeding of cloth direction of feed upstream side, then, begin main formation of making the stitching of the R2 of portion again from the interruption position w1 of another stitching R (with main to make the R1 of portion mutually continuous), form the joint-cutting of linearity simultaneously, then, the master of formation and another stitching R makes the consecutive fine and closely woven stitching of making the R3 of portion of the R2 of portion, and, during empty feeding, the rising or falling speed of central cutter 301 is slowed down from the end position w6 of the fine and closely woven stitching T2 of above-mentioned stitching T to the cloth of the interruption position w1 of another stitching R.

And CPU 151 is by executive control program, and profit forms stitching in the following method.

In addition, from beginning beginnings such as switch by operator's push, formation until the beginning stitching, and carry out the control of joint-cutting that lifting begins linearity CPU 151 till forming, control device 5 by central cutter 301 with the rising or falling speed corresponding with the cloth feed speed, identical when stitching that portion is made in above-mentioned reinforcing forms.

In addition, here the so-called fine and closely woven stitching of making portion, expression makes makes that spacing is dwindled and the stitching that forms, the so-called main stitching of portion of making, expression is carried cloth and is formed stitching with common pitch of feed, i.e. stitching usually, here, for will this common stitching and above-mentioned fine and closely woven stitching difference of making portion, be referred to as the main stitching of portion of making.

As Figure 15, shown in Figure 16, if CPU 151 executive control programs, then at first, CPU 151 drives the electromagnetic valve 90 of cylinder and switching part 81 is moved, and two suture needle 20a, 20a are moved to position moving up and down (step S41).

At this moment, the electromagnetic valve 90 of CPU 151 by making cylinder drives switching part 81 moved so that butt projection 81a be arranged between two follower link 62 on the needle bar 20 above.

Then, CPU 151 judges whether the formation that the master of ongoing two stitchings (R, T) at present makes certain stitching of portion (R1, T1) finishes, and namely the stitching that rearward end is positioned at the more downstream of cloth direction of feed among two stitchings (R, T) forms whether finish (step S42).In addition, this judgement can judge when the end that the main stitching of making portion (R1, T1) forms as described in the present embodiment, but also can judge according to the length data of making of the each several part of predefined stitching (R, T).Here, at equal (the step S42: not) under the unclosed situation of formation that CPU 151 judges main any stitching of making portion (R1, T1), CPU 151 drives by making spindle drive motor 101, big presser foot device 1, the master who forms present ongoing two stitchings (R, T) makes the stitching of portion (R1, T1), make central cutter 301 liftings by driving cutting knife motor 303 simultaneously, form the joint-cutting (step S43) of linearity.

Here, make the master who forms two stitching R, T under the situation of stitching of the R1 of portion, T1, form by the pin that falls of the order according to needle downing position w0, w1.

And CPU 151 continues to form the main stitching of making portion (R1, T1), finishes until judging that main certain stitching of making portion (R1, T1) forms.

In step S42, CPU 151 judges the main (R1 of portion that makes, T1) stitching forms under the situation about finishing (step S42: be), CPU 151 drives the electromagnetic valve 90 of cylinder, form a side who finishes in order only to drive with judging the main stitching of making portion, it is the relevant needle bar 20 (right side) of formation of side's stitching (T) in the rearward end more downstream that is positioned at the cloth direction of feed, switching part 81 is moved, so that the butt projection 81a of switching part 81 is positioned at the top that is arranged at the follower link 62 on another needle bar 20 (left side) that will stop, thereby a suture needle 20a is moved up and down, interrupt forming of the stitching that undertaken by another root suture needle 20a simultaneously, become the state (step S44) that can only utilize a suture needle 20a to make.

Then, CPU 151 judges whether the fine and closely woven formation of making the stitching of portion (T2) of (right side) stitching (T) finishes (step S45).Here, judge that at CPU 151 the fine and closely woven stitching of making portion (T2) of a stitching (T) forms (step S45: not) under the unclosed situation, CPU 151 drives by making spindle drive motor 101, presser foot motor 102, cloth is carried to cloth direction of feed downstream via big presser foot device 1 with the small spacing of making, a suture needle 20a is moved up and down, thereby form the fine and closely woven stitching (step S46) of making portion (T2) of a stitching (T).

Here, under the situation of the fine and closely woven stitching of making the T2 of portion that forms a stitching T shown in Figure 15, form by the pin that falls of the order according to needle downing position w1, w2, w3, w4, w5, w6.And CPU 151 continues to form the fine and closely woven stitching of making portion (T2), finishes until judging that the fine and closely woven stitching of making portion (T2) forms.

In step S45, CPU 151 judges that the fine and closely woven stitching of making portion (T2) forms under the situation about finishing (step S45: be), and CPU 151 switches to another root 20a (left pin) with employed suture needle from a suture needle 20a (right pin).

Here, when switching to another single needle (left pin) owing to the suture needle 20a, the 20a that in will making, use from single needle (right pin), can not once switch, therefore switch in the following order.

If a suture needle 20a (right pin) begins to rise from the fine and closely woven final needle falling point (w6) of making portion, then CPU 151 makes the electromagnetic valve 90 of cylinder drive immediately, thereby the butt projection 81a that makes switching part 81 moves to the top of removing pin 66, by arriving top dead-centre by needle bar 20 clutch components 61 is advanced, become two suture needle 20a, 20a are moved up and down, and the state (step S47) that can utilize crosspointer to make.

And CPU 151 stops the driving of spindle drive motor 101 each several parts such as grade in the moment of a pair of Libra (not shown) the arrival top dead-centre of sewing machine main body 12, and (step S48) made in temporary transient interruption.

At this moment, CPU 151 slows down cutting knife motor 303, utilizes configuration switch 85 and numerical key 86 predefined rotating speeds (step S49) to become.Like this, the rising or falling speed of central cutter 301 is slowed down, until the low fixing speed of rising or falling speed that becomes when forming above-mentioned linearity joint-cutting.This be because, stable in order to realize that central cutter 301 drives, even it is stopped, therefore when not cutting off cloth, reduce the number of times that central cutter 301 and fixed cutting tool slide, the generation noise alleviates when sliding thereby make, and prevents the wearing and tearing of each cutting knife as far as possible.

Then, CPU 151 is after slowing down the rotary speed of cutting knife motor 303, make big presser foot device 1 drive and cloth is carried to direction of feed upstream side (the B direction among Figure 15), so that finish the fine and closely woven formation of making the stitching of portion (T2) of a stitching (T), do not carry out moving up and down of suture needle and needle downing position moves to another (left side) stitching (R) interruption position (w1) in forming and goes up (step S50: empty feeding step).

Then, the suture needle 20a, the 20a that will use during CPU 151 will make switch to another root single needle (left pin) (step S51) from crosspointer.

When (left pin) switches from crosspointer to single needle, CPU 151 stops up in order to make the suture needle (right pin) among two suture needle 20a, the 20a, the electromagnetic valve 90 of cylinder is driven, thereby switching part 81 is moved, so that butt projection 81a is positioned at the top of the follower link 62 on the needle bar 20 that is arranged at a suture needle 20a (right pin) that will stop, and make making spindle drive motor 101 counter-rotating butt projection 81a and follower link 62 above butt, thereby push under the state of follower link 62, spindle drive motor 101 is stopped.Like this, the clutch components 61 corresponding with the needle bar 20 of a suture needle 20a (right pin) retreats, and the suture needle 20a, the 20a that use in making switch to single needle (left pin) from crosspointer.

Then, CPU 151 makes the rotary speed of the cutting knife motor 303 of deceleration accelerate to the preceding rotary speed (step S52) of slowing down.Like this, be used for stitching and joint-cutting form again ready.

In addition, for the variation of the rotary speed of cutting knife motor 301, the situation of making portion with reinforcing shown in Figure 14 is identical.

Then, CPU 151 judges whether the formation that the master of another stitching (R) makes the stitching of portion (R2) finishes (step S53).Here, judge that at CPU 151 master of another stitchings (R) makes (step S53: not) under the unclosed situation of formation of stitching of portion (R2), CPU 151 drives by making spindle drive motor 101, presser foot motor 102, via big presser foot device 1 cloth is carried to cloth direction of feed downstream, another root suture needle 20a is moved up and down, the interruption position w1 that forms from another (left side) stitching (R) begins main formation of making the stitching of portion (R2) again, begins form (the step S54) of the linearity joint-cutting that undertaken by central cutter 301 simultaneously again.

Here, make the master who forms another stitching (R) shown in Figure 15 under the situation of stitching of portion (R2), form by the pin that falls of the order according to needle downing position w1, w7, w8.

And CPU 151 continues to form the main stitching of making portion (R2), finishes until judging that the main stitching of making portion (R2) forms.

In step S53, CPU 151 judges that the main stitching of making portion (R2) forms under the situation about finishing (step S53: be), and CPU 151 judges whether the fine and closely woven formation of making the stitching of portion (R3) of another (left side) stitching (R) finishes (step S55).Here, judge (step S55: not) under the unclosed situation of formation of the fine and closely woven stitching of making portion (R3) at CPU 151, CPU 151 drives by making spindle drive motor 101, presser foot motor 102, cloth is carried to cloth direction of feed downstream via big presser foot device 1 with the small spacing of making, another root suture needle 20a is moved up and down, thereby form the fine and closely woven stitching (step S56) of making portion (R3) of another stitching (R).

Here, under the situation of the fine and closely woven stitching of making portion (R3) that forms another stitching (R) shown in Figure 15, form by the pin that falls of the order according to needle downing position w8, w9, w10, w11, w12, w13.

And CPU 151 continues to form the fine and closely woven stitching of making portion (R3), finishes until judging that the fine and closely woven stitching of making portion (R3) forms.

In step S55, CPU 151 judges that the fine and closely woven stitching of making portion (R3) of another stitching (R) forms under the situation about finishing (step S55: be), and CPU 151 stops the cloth feeding of being undertaken by big presser foot device 1, thereby finishes this processing.

(action effect)

According to fillet sewing machine 100, control device 5 is by utilizing CPU 151 control spindle drive motors 101, the electromagnetic valve 90 of cylinder, and the driving of big presser foot device 1, forming two stitching R, during the rear end of T, form two masters and make the R1 of portion, the stitching of T1, until two stitching R, rearward end is positioned at the fine and closely woven starting position w1 that makes portion of a stitching T in the more downstream of cloth direction of feed among the T, form the joint-cutting of linearity simultaneously, then, interrupt the formation of another stitching R, and the master of formation and a stitching T makes the consecutive fine and closely woven stitching of making the T2 of portion of the T1 of portion, then, make the end position of the T2 of portion to the aforementioned interruption position w1 of aforementioned another stitching R from this stitching T fine and closely woven, make cloth to the empty feeding of cloth direction of feed upstream side, then, begin main formation of making the stitching of the R2 of portion again from the aforementioned interruption position w1 of another stitching R, form the joint-cutting of linearity simultaneously, then, the master of formation and another stitching R makes the consecutive fine and closely woven stitching of making the R3 of portion of the R2 of portion, and when the empty feeding of cloth, the rising or falling speed of central cutter 301 is slowed down.

Like this, because the driving of control device 5 control cutting knife motor 301, so that when empty feeding cloth, the rising or falling speed of central cutter 301 is slowed down, the slip number of times of central cutter 301 is reduced, thereby the slip sound is reduced.In addition, because the slip number of times of central cutter 301 reduces, so the wear extent of central cutter 301 reduces, life-span that can elongation center's cutting knife 301.

(other)

In addition, the invention is not restricted to above-mentioned embodiment.

As long as satisfy following three conditions, the present invention can be suitable in any making in the order, and these three conditions are: there is deviation in the sewing finishing position of (1) two stitching; (2) in the process of making, there is the empty feeding of cloth; (3) before and after the empty feeding of cloth, have the operation that the central cutter utilized is cut off cloth, mainly make portion, reinforce the portion of making, fine and closely woven formation order of making portion can change arbitrarily.

For example, in the above-described embodiment, mainly make portion, reinforce the portion of making and fine and closely woven when making each stitching of portion forming, do not carry out the suture needle swing, and only determine to make spacing by the feeding of being undertaken by big presser foot device 1, but when forming each stitching, also can be by the CPU 151 big presser foot device 1 of control and pin wobbling motors 105, make cloth feeding and suture needle swing and the usefulness of being undertaken by big presser foot device 1, thereby suitably spacing is made in change.

In addition, in the single needle shut-down mechanism in the above-described embodiment, owing to utilize a cylinder to carry out the switching of crosspointer, therefore when switching to another root single needle (right pin) from a single needle (left pin), crosspointer switches to single needle after must temporarily be switched to, but for example shown in patent documentation (special fair 4-No. 52160 communiques), also can utilizing separately independently, cylinder carries out stopping of each suture needle.If like this, then needn't temporarily switch to crosspointer, though component count increases, operability is improved.

Claims (3)

1. fillet sewing machine, it has:

Sewing machine main body, it has the suture needle reciprocating mechanism, this suture needle reciprocating mechanism has two needle bars and single needle shut-down mechanism, these two needle bars keep two suture needles respectively, utilize spindle drive motor to drive and move up and down, this single needle shut-down mechanism constitutes each suture needle is stopped in lifting position respectively, and this sewing machine main body utilizes the driving of aforementioned spindle drive motor, sews up main cloth and filler rod cloth by two stitchings (P, Q);

Keep body, it remains on filler rod cloth on the main cloth;

Big presser foot device, it has across aforementioned maintenance body and descends in both sides and press a pair of presser feet wrist that keeps main cloth and filler rod cloth, and main cloth and filler rod cloth are carried along the cloth direction of feed;

Central cutter mechanism, it has central cutter and cutting knife motor, this central cutter is disposed at the cloth direction of feed downstream of the needle downing position of aforementioned two suture needles, this cutting knife motor makes this central cutter lifting, this central cutter mechanism utilizes the driving of aforementioned cutting knife motor, make aforementioned central cutter carry out lifting with fixing speed, thereby between aforementioned two stitchings, form the joint-cutting of linearity; And

Control module, it controls aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, aforementioned big presser foot device and aforementioned cutting knife motor, so that in the rear end of aforementioned two stitchings (P, Q), the stitching of portion is made in the reinforcing that the position of formation cloth direction of feed rearward end has nothing in common with each other, between aforementioned two stitchings (P, Q), form the joint-cutting of aforementioned linearity simultaneously

It is characterized in that,

Aforementioned control module is controlled aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, the driving of aforementioned big presser foot device and aforementioned cutting knife motor, so that forming aforementioned two stitching (P, during Q) rear end, form two masters and make (the P1 of portion, Q1) stitching, until aforementioned two stitching (P, Q) rearward end among is positioned at the rearward end (n3) of a stitching (Q) in the more downstream of cloth direction of feed, form the joint-cutting of aforementioned linearity simultaneously, then, interrupt the formation of another stitching (P), the master of formation and an aforementioned stitching (Q) makes the stitching that portion (Q2) made in the consecutive reinforcing of portion (Q1), then, make the end position (n6) of portion (Q2) to the interruption position (n3) of aforementioned another stitching (P) from the reinforcing of this stitching (Q), make cloth empty feeding to cloth direction of feed downstream, then, begin main stitching formation of making portion (P2) again from the aforementioned interruption position (n3) of aforementioned another stitching (P), form the joint-cutting of aforementioned linearity simultaneously, then, the master of formation and aforementioned another stitching (P) makes the stitching that portion (P3) made in the consecutive reinforcing of portion (P2), and, when the empty feeding of cloth, make the rising or falling speed of aforementioned central cutter than the rising or falling speed deceleration of aforementioned regulation.

2. fillet sewing machine, it has:

Sewing machine main body, it has the suture needle reciprocating mechanism, this suture needle reciprocating mechanism has two needle bars and single needle shut-down mechanism, these two needle bars keep two suture needles respectively, utilize spindle drive motor to drive and move up and down, this single needle shut-down mechanism constitutes each suture needle is stopped in lifting position respectively, and this sewing machine main body utilizes the driving of aforementioned spindle drive motor, sews up main cloth and filler rod cloth by two stitchings (R, T);

Keep body, it remains on filler rod cloth on the main cloth;

Big presser foot device, it has across aforementioned maintenance body and descends in both sides and press a pair of presser feet wrist that keeps main cloth and filler rod cloth, and main cloth and filler rod cloth are carried along the cloth direction of feed;

Central cutter mechanism, it has central cutter and cutting knife motor, this central cutter is disposed at the cloth direction of feed downstream of the needle downing position of aforementioned two suture needles, this cutting knife motor makes this central cutter lifting, this central cutter mechanism utilizes the driving of aforementioned cutting knife motor, make aforementioned central cutter carry out lifting with fixing speed, thereby between aforementioned two stitchings, form the joint-cutting of linearity; And

Control module, it is controlled aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, aforementioned big presser foot device and aforementioned cutting knife motor and controls, so that in the rear end of aforementioned two stitchings (R, T), the fine and closely woven stitching of making portion that the position of formation rearward end has nothing in common with each other, between aforementioned two stitchings (R, T), form the joint-cutting of aforementioned linearity simultaneously

It is characterized in that,

Aforementioned control module is controlled aforementioned spindle drive motor, aforementioned single needle shut-down mechanism, the driving of aforementioned big presser foot device and aforementioned cutting knife motor, so that forming aforementioned two stitching (R, during T) rear end, form two masters and make (the R1 of portion, T1) stitching, until aforementioned two stitching (R, T) rearward end among is positioned at the fine and closely woven starting position (w1) of making portion (T2) of a stitching (T) in the more downstream of cloth direction of feed, form the joint-cutting of linearity simultaneously, then, interrupt the formation of another stitching (R), the master of formation and an aforementioned stitching (T) makes the consecutive fine and closely woven stitching of making portion (T2) of portion (T1), then, make the end position (w6) of portion (T2) to the interruption position (w1) of aforementioned another stitching (R) from this stitching (T) fine and closely woven, make cloth to the empty feeding of cloth direction of feed upstream side, then, begin main formation of making the stitching of portion (R2) again from the interruption position (w1) of aforementioned another stitching (R), form the joint-cutting of aforementioned linearity simultaneously, then, the master of formation and aforementioned another stitching (R) makes the consecutive fine and closely woven stitching of making portion (R3) of portion (R2), and when the empty feeding of cloth, make the rising or falling speed of aforementioned central cutter than the rising or falling speed deceleration of aforementioned regulation.

3. fillet sewing machine according to claim 1 and 2 is characterized in that,

Has setup unit, the rotating speed of the aforementioned cutting knife motor when its setting makes aforementioned cloth carry out the sky feeding.

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