Below, according to embodiments of the invention, obvious needle sewing machine or lockstitch button holder with reference to accompanying drawing 1-5.
The 1st, sewing machine stand, the 5th, main motor, the 6th, last axle, the 7th, crank, the 8th, eedle bar, the 9th, eedle, the 10th, vertical shaft, the 11st, lower shaft, the 12nd, eedle tube, the 13rd, bobbin case, the 14th, put fabric swatch, the 15th, cloth is pressed, the 16th, rag knife, the 17th, transmit motor, the 18th, eedle bar swing span, the 30th, bonnet, the 40th, baseline motor (first electric device), the 41st, amplitude of oscillation motor (second electric device), the 42nd, needle vibrating mechanism (baseline converting means and amplitude of oscillation converting means).
As shown in the figure, the composition of sewing machine stand 1 has: have the base plate 2 of the smooth base plate face of upper surface, in a vertical fuselage 3 that erects on distolateral of this base plate 2 and these fuselage 3 beginnings and casing 4 that base plate 2 extends in parallel slightly certainly, see from the side to be the コ font.
In above-mentioned sewing machine stand 1, the vertical outboard end of the Sewing machines of its vertical fuselage 3 is equipped with main motor 5, the axle 6 of going up that is driven by this main motor 5 is arranged in the casing 4, the front end of axle 6 is movably linking eedle bar 8 up and down by crank 7 on this, in the lower end of this eedle bar 8 eedle 9 is installed.
Vertically disposing vertical shaft 10 in the fuselage 3, configuration lower shaft 11 in base plate 2 is installed with bobbin case 13 in the tube 12 of these lower shaft 11 leading sections.Wherein, vertical shaft 10 upper ends link by helical gear 6a, 10a and last axle 6, and the bottom links by helical gear 10b, 11a and lower shaft 11.
In addition, but eedle bar 8 easy on and off swingingly be combined on the eedle bar swing span 18, this eedle bar swing span 18 is the fulcrum upper end that freely swings with the swing fulcrum 18a parallel with last axle 6.
In addition, on the top of base plate 2 cloth holding plate 14 is set, the cloth that is made of the shaped as frame pressing plate is set above this cloth holding plate 14 presses 15, simultaneously, being provided with and moving up and down cutter is rag knife 16.And cloth holding plate 14 and cloth press 15 owing to transmit the driving of motor 17, move back and forth with state axle 6 on base plate 2 upper edges of seizing cloth on both sides by the arms, can transmit the cloth sheet.
On the vertical outboard end of Sewing machines of vertical fuselage 3 of sewing machine stand 1, as shown in Figure 2, be set up in parallel the amplitude of oscillation motor 41 of determining second electric device of the amplitude of oscillation as the baseline motor 40 and the conduct of first electric device of determining eedle bar swing span 18 reference positions, 18 needle vibrating mechanism 42 that constitute as baseline converting means and pin amplitude of oscillation converting means from each output shaft to eedle bar swing span.
Baseline motor 40 and amplitude of oscillation motor 41 be all with the parallel pulse motor of last axle, such as the motor of a side shown in Figure 5 passes installing hole 36a to a plurality of screws 36 and is fixed on the formed erection column 35,35 in sewing machine stand 1 vertical fuselage 3 sides.Separately pinion 40a, 41a are set on the output shaft of these baseline motor 40 and amplitude of oscillation motor 41, in these pinions 40a, 41a, make the sector gear 43d (aftermentioned) of the baseline casing 43 that is configured in the sewing machine stand outside and the sector gear 55d of amplitude of oscillation support 55 be in meshing state respectively.
And as shown in Figure 4, baseline motor 40 and amplitude of oscillation motor 41 can cover from the outside with the detachable under casing type bonnet 30 that has on sewing machine stand 1 vertical fuselage 3 side ends with sewing machine electromotor 5.
As shown in Figures 2 and 3, needle vibrating mechanism 42 is made of baseline casing 43, base-bar 44, connecting rod 45, balancing point cam lever 46, balancing point bar 47, connection shaft 48, balancing point handle 49, balancing point cam 54, amplitude of oscillation support 55, amplitude of oscillation bar 56 etc.
Baseline casing 43 is by the turning cylinder 43a that connects sewing machine stand 1 support free to rotate, with the gear part 43b that base end part is fixed on this turning cylinder 43a one end, free end has sector gear 43d, and base end part is fixed on the 43c of the twin spans portion formation of the other end of this turning cylinder 43a.The motion that these parts can be accompanied by the baseline motor is the axle center unitary rotation with turning cylinder 43a.
On the one hand, make the sector gear 43d of baseline casing 43 and aforesaid pinion 40a meshing in the outside of sewing machine stand 1.On the other hand, in the inside of sewing machine stand 1, in the 43c of twin spans portion of baseline casing 43, link the end of the base-bar 44 of identical twin spans shape with horizontal pin 44a with freely swinging.In the twin spans portion of this base-bar 44, the end with horizontal pin 44b links connecting rod 45 with freely swinging links balancing point cam lever 46 with horizontal pin 45a with freely swinging on the other end of this connecting rod 45.
In addition, the leading section that on the bottom of this balancing point cam lever 46, links balancing point bar 47 with horizontal pin 46a with freely swinging.The base end part of this balancing point bar 47 is fixed on the parallel base end part of going up the connection shaft 48 of axle setting in the casing 4.Fixing the base end part of balancing point handle 49 on the leading section of this connection shaft 48, on the leading section of this balancing point handle, linking eedle bar swing span 18 with freely swinging by angle bar not shown in the figures etc.
Here, balancing point cam lever 46 tops be the open cam of コ word shape in conjunction with recess 46b, this cam in conjunction with recess 46b on by eccentric cam in conjunction with balancing point cam 54.
This balancing point cam 54 is equipped on the countershaft 53, and this countershaft 53 transmits rotatory force from last axle 6 with the speed of speed reducing ratio 1/2 by reduction gearing 51,52.
In addition, the turning cylinder 55a that constitutes 1 support free to rotate of perforation sewing machine stand of amplitude of oscillation support 55, with the gear part 55b that base end part is fixed on this turning cylinder 55a one end, free end has sector gear 55d, and base end part is fixed on the cradle portion 55c of the other end of this turning cylinder 55a.The motion that these parts can be accompanied by amplitude of oscillation motor is the axle center unitary rotation with turning cylinder 55a.
On the one hand, make the sector gear 55d of amplitude of oscillation support 55 and aforesaid pinion 41a meshing in the outside of sewing machine stand 1.On the other hand, in the inside of sewing machine stand 1, in the cradle portion 55c of amplitude of oscillation support 55, link an end of amplitude of oscillation bar 56 with horizontal pin 56a with freely swinging.The other end of this amplitude of oscillation bar 56 is attached on the aforementioned binding connecting rod 45 and base-bar 44 that is inserted with horizontal pin 44b with freely swinging.
In addition, be positioned at baseline support 3 and the amplitude of oscillation support 55 and pinion 40a, the 41a formation transmission device of sewing machine stand 1 outside.Near the sector gear 43d of baseline casing 43, the baseline initial point that detects baseline position is set detects sensing part 57, same, also near the sector gear 55d of amplitude of oscillation support 55, the amplitude of oscillation initial point that detects the pin amplitude of oscillation is set detects sensing part 58.For example, these baseline initial points detect sensing part 57 and amplitude of oscillation initial point detection sensing part 58 can be made of photoelectric sensing spare.
On a side of the reduction gearing 52 of countershaft 53 sides, the balancing point left and right sides position probing sensing part of being made up of the magnetic strength sensing part 59 (baseline side, balancing point side checkout gear) is set, the guide that left and right sides position probing is set on reduction gearing 52 refers to 52a.
So the secondary rotation of the reduction gearing 51 of aforementioned reduction gearing 52 on main shaft 6 is rotated once, rotate once when promptly eedle 9 moves up and down secondary.Aforementioned balancing point left and right sides position probing sensing part 59 is positioned at the top stop position and faces toward compass 52a when the position is rotated in the swing of baseline side at eedle.
In addition, in such balancing point device, can be with known fueller supplying lubricating oil.
In above-mentioned needle vibrating mechanism 42, owing to rely on as the baseline motor 40 of electric device and each power of amplitude of oscillation motor 41, eedle bar swing span 18 is from baseline casing 43 process base-bars 44 and from amplitude of oscillation support 55 process amplitude of oscillation bars 56, can transmit swing respectively by binding connecting rod 45, balancing point cam lever 46, balancing point bar 47, connection shaft 48, balancing point handle 49 and the balancing point cam 54 that descends, be the swing that fulcrum carries out so can carry out with upper end swing fulcrum shaft 18a.
Promptly in baseline, rely on the driving of pulse motor to baseline motor 40, by baseline casing 43, base-bar 44, binding connecting rod 45, balancing point cam lever 46, balancing point bar 47, connection shaft 48, balancing point handle 49 and balancing point cam 54 swing is transmitted, can swing fulcrum shaft 18a with the upper end is fulcrum oscillating machine shank swing span 18, makes the baseline conversion.Here it is baseline mapping device.
In addition, in the amplitude of oscillation, rely on the driving of pulse motor to amplitude of oscillation motor 41, by amplitude of oscillation support 55, amplitude of oscillation bar 56, binding connecting rod 45, balancing point cam lever 46, balancing point bar 47, connection shaft 48, balancing point handle 49 and balancing point cam 54 swing is transmitted, can swing fulcrum shaft 18a with the upper end is fulcrum oscillating machine shank swing span 18, makes amplitude of oscillation conversion.Here it is amplitude of oscillation mapping device.
At this,,, also can decide pin by the position of baseline casing 43 when the cam top of balancing point cam 54 during in the baseline side because needle vibrating mechanism 42 is that benchmark is swung (increase) to the left with the baseline position.And,, also can decide pin by amplitude of oscillation amount facing to baseline position when the cam top of balancing point cam 54 during in amplitude of oscillation side.
In addition, when making, drive the upward axle 63 that rotates from sewing machine electromotor 5, rotation is sent to the balancing point cam 54 of equipment on the countershaft 53 by reduction gearing 51,52, it is rotated with the speed of speed reducing ratio 1/2, balancing point cam lever 46 in conjunction with this balancing point cam 54 in conjunction with recess 46b carries out reciprocally swinging, and the reciprocally swinging of this balancing point cam lever 46 sends eedle bar swing span 18 to by balancing point bar 47, connection shaft 48, balancing point handle 49 and balancing point cam 54.
As a result, because the conversion of the aforementioned baseline and the amplitude of oscillation, 18a is eedle bar swing span 18 reciprocally swingings of fulcrum with upper end swing fulcrum shaft, forms the sealing of buttonhole parallel portion (latasuture portion) and buttonhole termination portion (buttonhole stops the portion of making).
As mentioned above, lockstitch button holder according to the embodiment of the invention, because baseline motor 40 and amplitude of oscillation motor 41 are configured in the outside of sewing machine stand 1 respectively, for the used lubricating oil such as needle vibrating mechanism 42 burn-backs that prevent configuration in the sewing machine stand 1 can greasy dirt baseline motor 40 and amplitude of oscillation motor 41.And, for baseline motor 40 and amplitude of oscillation motor 41, need not consider oil resistivity.
In addition, because the sector gear 43d of these baseline motor 40 and amplitude of oscillation motor 41 and baseline casing 43 together and the sector gear 55d of amplitude of oscillation support 55 all are configured in the outside of sewing machine stand 1, the baseline that detects these sector gears 43d, 55d position detects sensing part 57, amplitude of oscillation initial point detects the outside that sensing part 58 also can be placed in sewing machine stand 1, for these sector gears 43d, 55d, also need not consider oil resistivity.Such as these sensing parts 57,58 can be used more cheap photoelectric sensing spare, also can reduce cost.
Because baseline motor 40, amplitude of oscillation motor 41, the pinion 40a that is provided with on the power output shaft, 41a, the gear part 43b of baseline casing 43, the gear part 55b of amplitude of oscillation support is arranged on the outside of sewing machine stand 1, make and two gear part 43b, the turning cylinder 43a that 55b links respectively, 55a connects external agency and the internal mechanism that sewing machine stand 1 links aforementioned sewing machine stand 1, so, if at motor 40,41 installed position loosens the position of screw 36 fine settings facing to the screw hole 36a of screw 36 slightly, just can carry out the backlash adjustment facing to the sector gear 43d of baseline casing 43 and the sector gear 55d of amplitude of oscillation support simply from the outside of sewing machine stand 1.
In addition, because the turning cylinder 55a of the turning cylinder 43a of baseline casing 43 and the linking part of gear part 43b and amplitude of oscillation support 55 and the linking part of gear part 55b are arranged on the outside of each sewing machine stand 1, other parts can not hinder facing to the gear part 43b of turning cylinder 43a, 55a, the fixed angle of 55b, and can regulate fixed angle simply.And, when being installed, needle vibrating mechanism 42 carries out the adjustment of baseline origin position and amplitude of oscillation origin position etc. easily.
In addition, because baseline motor 40 and amplitude of oscillation motor 41 are separately positioned on vertical fuselage 3 side ends of sewing machine stand 1, baseline motor 40 and amplitude of oscillation motor 41 and sewing machine electromotor 5 are covered from the outside together with the bonnet 30 of vertical fuselage 3 side ends that are installed in sewing machine stand 1.And this can make the outward appearance of this lockstitch button holder clean and tidy.
In addition, in the above-described embodiments, though only enumerated lockstitch button holder, the present invention is not limited thereto, and other swing needle sewing machine also can.And baseline motor 40, amplitude of oscillation motor 41 are not only limited to pulse motor, such as, also can constitute by the motor of linear stepping motor etc. or cylinder assembly etc.Main motor 5 links lower shafts 11, and the driving by lower shaft 11 makes 6 transmission.
In addition, much less other concrete detailed structure etc. can be made adaptations.
Invention according to claim 1, because the outside at the sewing machine stand of the few part that is placed with baseline mapping device and pin amplitude of oscillation mapping device is provided with first and second electric devices respectively, for preventing that the lubricating oil in baseline converting means and the burn-back of pin amplitude of oscillation converting means can greasy dirt first and second electric devices.And, for first and second electric devices and near baseline detection sensing part that these electric devices, is provided with or pin amplitude of oscillation detection sensing part, needn't consider oil resistivity.
And, since in the outer setting of sewing machine stand first and second electric devices, when assembling during first and second electric devices, can carry out the adjustment of the position of adjustment such as backlash or baseline and amplitude of oscillation initial point facing to the gear part of baseline mapping device and pin amplitude of oscillation mapping device in the outside of sewing machine stand.And, when assembling first and second electric devices, carry out above-mentioned various adjustment easily.
In addition and since in the outer setting of sewing machine stand first and second electric devices, increased the free degree of installation site, also can increase baseline mapping device and the layout of pin amplitude of oscillation mapping device and the free degree of device.And needle falling point always can improve the manipulation of sewing fabric in the baseplate width center in the base plate.
Invention according to claim 2, because the vertical outside at the vertical fuselage of sewing machine stand is provided with first and second electric devices respectively, even first and second electric devices are arranged on the outside of sewing machine stand, because can not be first and second electric devices laterally projecting to sewing machine stand, so, it is clean and tidy neither to influence outward appearance, also can guarantee the operation area fully, improves operation.
In addition, disposing in the end of the vertical fuselage of sewing machine stand under the situation of the drive motor that drives Sewing machines, owing to can cover sewing machine electromotor and first and second electric device by enough lids, the outward appearance of Sewing machines is better, and, can reduce cost.