JPH0382498A - Automatic head distance control device for cuff sewing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic head spacing control device in a cuff sewing machine, particularly to an automatic head spacing control device in a cuff sewing machine that can automatically respond to changes in workpiece size. It is something to do.

[Conventional technology]

In sewing the cuff cloth, as shown in Fig. 5, it is necessary to sew one button Bk on one end and a hole or hem stitch C on the other end, for example, on both ends of the cuff cloth 5, and Fig. 6 shows these. It is a figure showing the conventional cuff sewing device which can sew both ends simultaneously.

In FIG. 6, D is a device stand, Tt is a fixed table fixed to the device stand, and 1 is a first sewing mechanism installed on this fixed table T, for example, a hole provided with a well-known buttonhole cutting mechanism. It is a stitch sewing machine.

Tt is a movable table that is moved in the direction of arrow F by a moving means (not shown) and can adjust the distance from the fixed table T1, and 2 is a second sewing mechanism installed on this movable table T, e.g. This is a well-known button sewing machine.

B is a button feeder, and B4 is a button loader that supplies buttons from button feeder B to the button sewing machine 2 via a spring chute.

CP is a control means (C
PU) control panel.

Further, H is a cufflink setting mechanism, and this cufflink setting mechanism H includes a magazine M, a cloth take-out mechanism 17, and a guide mechanism 1.
8, variable stopper 19.

Magazine M is divided into two vertical walls M + and M z
Therefore, a plurality of cufflink cloths 5 are stacked, and the cloth take-out mechanism 17 provided below the magazine M uses a rotating body with a large frictional resistance or an air cylinder (not shown) as a driving source. By abutting the cuff cloth 5 with a bat or the like having a large frictional resistance provided in a ring mechanism, the cuff cloths 5 at the lowest position in the magazine M can be taken out from the magazine opening M one by one.

Then, the cuff cloth 5 taken out from the magazine M is sent to the guide mechanism 18.

The guide mechanism 18 includes a placement plate 18b on which the cuff cloth 5 is placed, and two L-shaped guide bodies 18 that are fixed from a vertical plane and a horizontal plane.
The guide body 18a is equipped with a lifting means (such as a solenoid or an air cylinder) not shown and can be raised and lowered, and when the cuff cloth 5 is fed, the plane of the mounting plate 18b and its horizontal plane are the same. The cuff cloth 5 rises until it becomes a flat surface, and the side part of the cuff cloth 5 comes into contact with the vertical surface of the guide body 18a, and the cuff cloth 5
It can be used as a feeding guide.

Reference numeral 19 denotes a variable stopper, which has a rising portion that comes into contact with one end of the cuff cloth 5, and is moved by a predetermined dimension in the feeding direction of the cuff cloth 5 using a scale provided on the guide plate L by means of a threaded body 19a, and then fixed. It is possible to stop the cuff cloth 5 at an appropriate position in the guide mechanism 18. The variable stopper 19 can be moved by a motor or the like in response to a command from a control unit (CPU) based on predetermined data stored in the control panel C.

In the position where this cuff set mechanism H is installed, the vertical wall M in the direction opposite to the direction in which the magazine M is taken out is installed on the moving table T, and the other vertical wall M! and cuff cloth removal mechanism 17, guide mechanism 18, variable stopper 1
9 is installed on a fixed table T1.

FIG. 7 explains the action of the cuff set mechanism H when positioning the cuff cloth.
N8 is the first needle drop point of the hole stitch sewing machine 1, and N8 is the second needle drop point of the button stitch sewing machine 2.

And NW is the distance between each needle drop point N,,Nt,
By moving the moving table Tz, this distance NW is reduced to 1! clause is possible.

That is, as shown in FIG.
There are large and small shapes, and the button sewing position WB and hole sewing distance MWC from each end of the cuff cloth also vary, and it is necessary to adjust the position accordingly. In position adjustment, by moving the variable stopper 19, the distance between the variable stopper 19 and the first needle drop point N is adjusted as WC, and the distance between each needle drop NW is adjusted from the total length l of the cuff cloth to the hole. The length NW (NW cloud L-WC-WB) obtained by subtracting the stitching distance @WC and the button sewing position WB is determined by the control means (CPU) based on predetermined data on the control panel C door. The table T is moved by a table moving means such as a motor (not shown) in response to a command.

Set by moving .

In other words, positioning due to a change in the shape of the cuff cloth 5 is performed in only two steps: adjusting the variable stopper 19 and moving the moving table Tt. Furthermore, the magazine M is divided into two parts, and one vertical wall Ml is installed on the moving table T, so the moving table T! By this movement, the inner diameter of the magazine M in the longitudinal direction can be approximately adjusted to the various lengths of the cuff cloth 5 in the longitudinal direction, so that cloth can be taken out appropriately.

In addition, to sew two buttons Br and Bt to the cuff cloth 5 as shown in FIG. 8(e), align the sewing position of the first button B1 to WB+ as described above and sew this do.

Then, when sewing the second button B2 thereafter, the moving table T2 is moved between the first button B1 and the second button B! (W B + W B z ).

K is a cuff cloth moving mechanism, which can set the cuff cloth 5 set at the positioning position in the guide mechanism 18 to the sewing position, and can also move the cuff cloth after sewing out of the sewing position. It has become.

This cuff cloth moving mechanism includes a clamping body 20 and a clamping body 2.
The cuff set mechanism H is comprised of a clamping member driving means (not shown) such as a motor or an air cylinder, which drives the sewing machine 0 between the sewing machines 1 and 2, a stacker (not shown), and a cuff set mechanism H (not shown).

FIG. 9 is a diagram showing the clamping body 20. The clamping body 20 has clamping parts 21 and 21' which can be opened and closed and which clamp the cuff cloth 5 on both sides.
have. The holding portion 21 is connected to the variable stopper 19.
The holding portion 21' is for holding the cuff cloth 5 that has been positioned, and the holding portion 21' is for holding the sewn cuff cloth 5 and discharging it to a stacker.

io FIG. 1al ~ (C1 is a diagram showing the structure and function of the holding portions 21, 21'.

In FIG. 10, reference numeral 22 denotes an opening/closing plate, which has two shaft bodies 23 on its lower surface.

The two shafts 23 each support a long plate, and one of the long plates is supported by a pin 27 on the main body of the clamping body 20.
The other long plate is attached to the cam-shaped long plate 28 with a pin 27' to the clamping body 2.
It is pivotally supported by the 0 main body and connected to the advancing/retracting portion of the cylinder 25 by a pin 24.

At this point, when the cylinder 25 retreats from the state shown in Figure 1O (al), each long plate rises and the opening/closing plate 22 rises from the upper surface 26 of the clamping body 20 to be in the open state (see Figure 1 (bl)).

Then, as the cylinder 25 retreats further (see figure (c)), each of the long plates collapses, and the opening/closing plate 22 moves to the right in the figure from the state shown in figure fal, and descends to the upper surface 26 to reach the closed state. Become.

In this way, the opening/closing plate 22 and the cuff cloth 5 are connected to the upper surface 26.
can be held. Furthermore, when releasing the cuff cloth 5, if the cylinder 25 is advanced, the cuff cloth 5 will be released and return to the state shown in FIG. 10 (al) when it reaches the state shown in FIG.

Therefore, when the cuff cloth 5 is set at the positioning position by the guide mechanism 18 described above, the cuff cloth 5 is held by the holding part 21 of the holding body 20 between the opening/closing plate 22 and the upper surface 26, and the guide body 18a is moved to the elevating means. It moves downward. Then, the holding part 21 moves to the right in FIG. 6 while being guided by a pair of guide plates L while holding the cuff cloth 5 between the opening/closing plate 22 and the upper surface 26, and moves to the right in FIG. The sewing machine 2 stops at the sewing position, and the clamping part 21
At the same time, the clamping body 20 is returned to its original position via the path indicated by the arrow R shown in FIG. 11 by the clamping body driving means.

Meanwhile, during this time, the first sewing machine 1 and the second ξ machine 2 start sewing, and after the sewing is finished, both sewing machines 1 and 2 stop.

Next, when the next cuff cloth 5 is set in the positioning position in the same way, one clamping part 21 of the clamping body 20 clamps the cuff cloth, and the other clamping part 21' holds the cuff cloth after sewing is completed. Hold 5.

Next, the clamping body 20 moves to the right in the same manner as described above, and the clamping part 21 stops at the sewing position of both sewing machines 1.2, and the cuff cloth 5.
At the same time, the clamping part 21' releases the cuff cloth 5 on the stacker.
discharge.

[Problem to be solved by the invention]

However, all of the above-mentioned operations are performed with the sewing machine stopped, which has the drawback of large lost time in the case of multi-breed cattle lofts.

The present invention seeks to eliminate the above-mentioned drawbacks.

[Means to solve the problem]

The automatic head spacing control device in the cuff sewing device of the present invention is configured to install a buttonhole sewing machine and a cufflink sewing machine side by side, and to simultaneously perform buttonhole sewing and button sewing on cuff cloth. In the cuff sewing device, the first and second sensors detect one end and the other end of the cuff cloth set on the cuff set m, respectively, and the first sensor detects one end of the cuff cloth set on the cuff set m. a moving means for relatively moving the second sensor and the cuff link setting mechanism, which is driven when detected and stops when the second sensor detects the other end of the cuff cloth; and movement of the moving means. The present invention is characterized by a means for automatically adjusting the distance between the heads of the buttonhole sewing machine and the cufflink sewing machine according to the amount of sewing.

[For production]

In the head spacing automatic control device of the cuff sewing machine of the present invention, when cuff cloth is supplied, its size is automatically determined, and the moving table is moved according to this determination, and the head spacing of both sewing machines is automatically adjusted. adjusted to.

〔Example〕

The present invention will be explained in detail below with reference to the drawings.

In the present invention, as shown in FIGS. 1 to 3, a pulse motor 40 and an idler pulley 36 in which a pulley shaft 37 is rotatably supported on an idler pulley bracket 38 are provided in the cuff set mechanism H. A timing belt 35 is interposed between the rotating shaft of the pulse motor 40 and the idler pulley 36, a sensor carrier 32 is connected to the timing belt 35, and the sensor carrier 32 extends in the direction in which the cuff cloth 5 is drawn out from the magazine M. In addition to being guided along the carrier shafts 33a and 33b, a variable stopper 1 is provided on the side surface of the mounting plate 18b on the guide body side in the cuff set l1tlH in the direction in which the cuff cloth 5 is pulled out from near the end surface on the side of the magazine M.
A groove or notch 29 extending toward the 9 side is provided, and an optical sensor 30 is provided at the tip of a single-shaped sensor bracket 31 connected to the sensor carrier 32 so as to be located above the notch 29.

Further, a work sensor 42 is provided on the placing plate 18b to detect that a work such as the cuff cloth 5 is placed near the vertical surface of the variable stopper 19.

The automatic head spacing w control device in the cuff sewing device of the present invention having the above-mentioned configuration operates as follows.

Set the cuff cloth 5 in the magazine M and turn on the power of the device.
As a result, the pulse motor 4o is driven and the sensor 3
0 moves relative to the mounting plate 18b together with the sensor carrier 32, and the mounting plate end 18c of the mounting 11sb is moved to the sensor 3o.
The pulse motor will stop when detected. The moving table T is moved to the origin by a moving mechanism (not shown). At this time, the needle position of the button sewing machine is made to coincide with the mounting plate end 18c in the F direction.

Cuff cloth removal mechanism 1 by turning on the start switch
7, the lowest cuff cloth in the magazine M is sent through the magazine opening M and onto the guide mechanism 18, and the two of the cuff cloths 5 are sent to the vertical surface of the guide body 18a and the vertical surface of the variable stopper 19.
The sides touch.

When the work sensor 42 detects this state, the pulse motor 4o is driven by this detection signal, and the sensor carrier 32 moves until the sensor 30 detects the end surface of the cuff cloth 5 on the notch 29. 0 calculated by
Next, use the calculated movement amount + position WB for button sewing machine 2.
The moving amount is calculated, and the moving table T2 is moved by a moving mechanism (not shown) to set the head spacing.

At the same time or after moving the moving table T2, the holding body 2
0, the cuff cloth on the cuff link setting mechanism H and the cuff cloth after sewing are grabbed, and the cuff cloth on the side of the cuff link setting mechanism H is sent to the sewing machine head.

After the clamping body 20 is moved, the next cuff cloth is sent out from the magazine M, the length of the cuff cloth is measured, and if there is a change in the size of the cuff cloth, the head spacing is reset by the CPU.

When the clamping body 20 returns, it grasps the cuff cloth and feeds the cuff cloth to the sewing machine head as needed to sew it.

In addition, in the cuff sewing device shown in Fig. 1, the magazine M
Although the integrated magazine M is fixed to the fixed table T1 without dividing into two, it may be divided into two as in the conventional device.

Furthermore, instead of moving the sensor 30 using the pulse motor 4o, the sensor 30 may be fixed and the guide mechanism 18 may be moved.

FIG. 4 shows a flowchart of the automatic head spacing control device in the cuff sewing device of the present invention.

[Effects of the Invention] Since the automatic head spacing control device in the cuff sewing device of the present invention is as described above, it has the following effects.

(1) Since the head spacing is managed by the CPU, if the workpiece size is changed, sewing can be continued without stopping the sewing machine and making adjustments.

(2) Continuous sewing of cuff cloths of different sizes is possible by moving and positioning the moving table Tt based on the automatically measured value of the workpiece size and already stored data.

(3) Since it has an automatic measurement function for cufflink fabrics, it becomes possible to stack cufflink fabrics of different sizes in the magazine and stop the device when the size is changed, making it possible to prepare in advance for work.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of the automatic head spacing control device in the cuff sewing device of the present invention, Fig. 2 is a plan view of the cuff link setting mechanism, Fig. 3 is a front view of the cuff link setting mechanism, and Fig. 4 is the present invention. FIG. 5 is a plan view showing the positional relationship between the cuff cloth and the sewn product at both ends thereof; FIG. 6 is an external perspective view of the conventional cuff sewing device; FIG. The figure is a plan view showing the cuff cloth positioning state in the cuff sewing device shown in Fig. 6, and Fig. 8 fa)
, (bl, (C1 is a plan view showing various types of cuff stitching, FIG. 9 is a plan view showing the clamping body, FIG. 10(a),
(bl, (cl is an explanatory diagram explaining the operation of the clamping part,
FIG. 11 is a side view showing the operation of the clamping body by the clamping body driving means. 1... Hole sewing machine, 2... Button sewing machine, 5... Cuff cloth, 17... Cloth take-out mechanism, 1
8... Guide mechanism, 1.8 a... Guide body, 18
b...Placement plate, 18c...13! 1! vi end, 19...variable stopper, i9a...screw body, 20
... Holding body, 21.21' ... Holding part, 22... Opening/closing plate, 23... Shaft body, 24..., 25... Ender, 26... Top surface, 27. 27'... bottle, 28.
... Long hole, 29 ... Groove or notch, 30 ... Optical sensor, 31 ... Sensor bracket, 32 ... Sensor carrier, 33a, 33b ... Carrier shaft, 35 ... Timing belt , 36... Idler pulley, 37... Pulley shaft, 38... Idler pulley bracket, 40... Pulse motor, 42...
...Work sensor, B, B,. Bt...button, B,...button feeder, B
4... Button supply mechanism, C... Hole stitch, C
P...Control panel, D...Device stand, H...
・Cufflink setting mechanism, K...Cufflink cloth movement mechanism, L・
・・Cufflink cloth full length, M・・Magazine, Ml, Ml ・
・Vertical wall, M, ・Magazine opening, N1 ・・
1st needle drop point, N2... 2nd needle drop point, NW...N
+, distance between Nt, T1...Fixed table, T2
...Moving table, WB... Button sewing position, WC... Hole sewing distance. Figure 2 Figure A Figure 7 Figure A (a) (b)

Claims (1)

[Claims] (1) A cuff sewing device in which a buttonhole sewing machine and a cufflink sewing machine are installed side by side to perform buttonhole sewing and button sewing on cuff cloth at the same time,
first and second sensors for respectively detecting one end and the other end of the cuff cloth set on the cuff link setting mechanism; and the second sensor which is driven when the first sensor detects one end of the cuff cloth. a moving means for relatively moving the second sensor and the cuff setting mechanism, which stop when the second sensor detects the other end of the cuff cloth; and a moving means for moving the cuff link setting mechanism relative to the second sensor; An automatic head spacing control device for a cufflink sewing machine, comprising means for automatically adjusting the head spacing of a diagonal stitch sewing machine and a cufflink sewing machine.