Switching structure of button sewing machine and bar tacking machine

[0026] The present invention will be further described below with specific examples, see figure 1 -9:

[0027] A switching structure of a button sewing machine and a tacking machine. A tacking adapter 20 or a tacking adapter 30 is provided at the front end of the supply rack 10, and a tacking foot device or a nail is connected to the tacking adapter 20 accordingly. A buckle presser foot device is connected to the buckle adapter 30.

[0028] On the front side of the button adapter 30 described above, there are spaced two presser foot installation grooves 301 arranged in parallel, and the presser foot installation grooves 301 are respectively provided with strip-shaped opening grooves 302 parallel to the presser foot installation groove 301. A pin hole and a threaded hole or two threaded holes are provided on the button adapter 30 between the foot mounting grooves 301, and a pin hole and a threaded through hole or two threaded holes are correspondingly provided on the front side of the supply rack 10 , The nailing adapter 30 is fixed on the supply rack 10 by screws and pins or two screws. When two screws are used for fixing, it is necessary to provide a sliding groove on the supply rack 10 longitudinally, and the nail fastener adapter 30 is arranged in the groove to ensure the position accuracy between the nail fastener adapter 30 and the supply rack 10.

[0029] The above-mentioned presser foot installation groove 301 is provided with the vertical portions 41, 51 of the left and right presser feet 40, 50, and the horizontal portions 42, 52 of the left and right presser feet 40, 50 extend in the direction of the supply rack 10 and are fixed in On the mounting plate 60, the left and right button pliers 70 and 80 are arranged on the bottom plane of the mounting plate 60. The rear ends of the left and right button pliers 70 and 80 are hinged on the rear end of the mounting plate 60, and the front end extends out of the mounting plate 60. Outside the front end of the left and right button pliers 70 and 80, the size of the opening at the front end is adjusted by a button adjusting device.

[0030] The above button adjusting device is: the bottom plane of the mounting plate 60 is provided with a front and back penetrating adjustment extension plate installation groove 601 in the center, and the adjustment extension plate 90 is arranged in the adjustment extension plate installation groove 601 and located on the left and right button pliers 70, Between 80 and 80, both ends of the adjustment extension plate 90 extend beyond the installation plate 60. A straight guide groove 602 is provided on the adjustment extension plate installation groove 601 to limit the forward and backward movement of the adjustment extension plate 90. The upper plane of the rear ends of the horizontal parts 42 and 52 of the feet is fixedly provided with a button adjusting plate 100. The rear end of the button adjusting plate 100 is provided with a strip-shaped opening slot 1001 parallel to the center line of the adjusting extension plate mounting groove 601, and the strip-shaped opening slot 1001 A guide screw 110 is provided. The tail end of the adjustment extension plate 90 is connected to the button adjustment plate 100 through the guide screw 110. A button clamp stop rod 120 that can push the guide screw 110 to move back and forth is provided on one side of the guide screw 110. One end of the stop rod 120 is hinged on the button adjustment plate 100, the middle part is in contact with the guide screw 110, and the other end is provided with an arc groove 1201, and the stop rod clamping screw 130 passes through the arc groove 1201 and is fixed to the button adjustment plate 100 , The middle of the adjusting extension plate 90 is connected to the adjusting plate 150 through an extension plate guide screw 140 with one end set in the in-line guide groove 602. The adjusting plate 150 is located on the bottom plane of the left and right button pliers 70 and 80, and is on the adjusting plate. A figure eight groove 1501 is opened on the 150, and a screw 160 is arranged on the left and right button pliers 70 and 80. The screw 160 is arranged in the figure eight groove 1501. The stop rod 120 rotates around the arc groove 1201 to drive the guide screw 110 along the button adjustment plate 100 The upper strip opening groove 1001 moves, the extension plate guide screw 140 moves along the in-line guide groove 602, and then drives the adjustment extension plate 90 and the adjustment plate 150 to move, and drives the left and right button pliers 70 and 80 along the adjustment plate 150 The eight-shaped groove 1501 acts to adjust the size of the front opening of the left and right button pliers 70 and 80.

[0031] The left and right button pliers 70 and 80 are respectively provided with more than one spring mounting hole on the outer surface, both ends of the U-shaped spring 170 are respectively set in the spring mounting hole, and the closed end is pressed against the guide screw 110 to form a button The reset structure of the clamp stop rod 120. After the button clamp stop rod 120 moves, it will automatically reset under the action of the U-shaped spring 170.

[0032] The above-mentioned adjustment extension plate 90 and the adjustment plate 150 are fixedly connected by screws located on both sides of the extension plate guide screw 140.

[0033] An L-shaped button clamp stabilizing block 180 is provided on the front side of the vertical portions 41, 51 of the left and right presser feet 40, 50, and the vertical portion of the stabilizing block 180 is fixed to the vertical portions of the left and right presser feet. The upper and horizontal parts of 41 and 51 are fixed on the mounting plate 60. The button clamp stabilizing block 180 is used to adjust the verticality of the left and right presser feet 40 and 50.

[0034] A presser foot fixing plate 190 is fixed on the front side of the above-mentioned button fastener adapter 30, and the vertical portions 41 and 51 of the left and right presser feet are limited by the presser foot fixing plate 190 on the presser feet on the button fastener adapter 30. In the installation groove 301, the vertical portions 41, 51 of the left and right presser feet are provided with more than one through hole 210, and the front end of the lifting rod 200 provided on the supply rack 10 is connected to the left and right presser feet 40, 50 respectively. The middle part of the lifting rod 200 is hinged on the supply frame 10, and the rear end is connected to the tension spring hook shaft 260 on the supply frame 10 through the tension spring 250. The lifting rod 200 is also provided with a pressure shaft 270 for lifting and pressing The foot transmission rod 280 acts on the pressing shaft 270 to drive the lifting rod 200 to make a lever movement. The tension spring 250 drives the rear end of the lifting rod 200 to lift, pressing the front end of the lifting rod 200 downwards, and the presser foot transmission rod 280 cancels the effect, and the lifting rod 200 The reset realization drives the left and right presser feet 40 and 50 to move up and down along the presser foot installation groove 301. Two lifting rods 200 are provided on the left and right sides of the supply rack 10 respectively.

[0035] Two presser foot installation grooves 201 arranged in parallel are provided on the front side of the above-mentioned bar-tacking adapter 20 at intervals. The two presser foot installation grooves 201 are respectively provided with strip-shaped opening grooves 202, between the two presser foot installation grooves 201 The tacking adapter 20 is provided with a pin hole and a threaded hole or two threaded holes, and a pin hole and a threaded hole or two threaded holes are correspondingly provided on the front side of the supply rack 10, and the tacking adapter 20 passes Screws and pins or screws are fixed on the supply rack 10. When two screws are used for fixing, it is necessary to provide a sliding groove on the supply rack 10 longitudinally, and the tacking adapter 20 is arranged in the sliding groove to ensure the position accuracy between the tacking adapter 20 and the supply rack 10.

[0036] Left and right presser feet 220 and 230 are respectively provided in the above-mentioned two presser foot installation grooves 201. One end of the left and right presser feet 220 and 230 is set in the presser foot installation groove 201 on the front side of the bar tacking adapter 20 A tacking presser foot fixing plate 240 is fixed to limit the left and right presser feet 220 and 230 in the two presser foot installation grooves 201. The left and right presser feet 220 and 230 are respectively provided with mounting holes, which are arranged on the supply rack 10. The front end of the upper lifting rod 200 is respectively connected to the mounting holes on the left and right presser feet 220 and 230, the middle of the lifting rod 200 is hinged on the supply frame 10, and the rear end is connected to the tension spring hook on the supply frame 10 through a tension spring 250 The shaft 260 is connected, and a pressing shaft 270 is also provided on the lifting rod 200. The presser foot lifting transmission rod 280 acts on the pressing shaft 270 to drive the lifting rod 200 to make a lever movement. The tension spring 250 drives the rear end of the lifting rod 200 to lift and lift the lifting rod 200. Pressing down on the front end of the presser foot drive rod 280 cancels the effect, and the lifting rod 200 resets to drive the left and right presser feet 220 and 230 to move up and down along the presser foot installation groove 201 on the bar tacking joint 20. Two lifting rods 200 are provided on the left and right sides of the supply rack 10 respectively.

[0037] Since the position of the bar tacking foot device is low, the size of the bar tacking adapter 20 needs to be longer, and the position of the corresponding bar tacking foot device after being installed on the tacking adapter 20 can be lower, and the stability is good; The foot device needs to ensure a certain lifting height, and the position of the corresponding buckle adapter 30 should be higher, and the size of the buckle adapter 30 needs to be shorter. In the present invention, the tacking joint 20 and the buckle adapter 30 form a separate structure with the supply rack 10, so that the switching is more convenient, and the complicated process of disassembling and assembling half a machine in the prior art is avoided. When switching, it is only necessary to disassemble and assemble the tacking adapter 20, the tacking adapter 30, the tacking foot device and the tacking foot device, which is simple and convenient.

[0038] The foregoing embodiment is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore: all equivalent changes made in accordance with the shape, structure, and principle of the present invention should be covered by the present invention Within the scope of protection.