Bottom crotch strip pasting machine

Abstract

The utility model discloses a bottom crotch strip pasting machine which comprises a machine frame, a feeding assembly, a cutting assembly, a pulling assembly, a folding assembly, a moving assembly and a sewing assembly. The material pulling assembly comprises a first clamping mechanism and a first shifting mechanism, and the first shifting mechanism adjusts the position of the first clamping mechanism in the transverse direction and the longitudinal direction. The cutting assembly is used for cutting off the strip-shaped cloth on the feeding path; the folding assembly is used for clamping and folding the two side parts of the strip-shaped cloth; the material moving assembly comprises a second clamping mechanism and a second shifting mechanism, and the second shifting mechanism adjusts the position of the second clamping mechanism in the inclined direction, the transverse direction and the longitudinal direction. The sewing assembly is used for sewing the strip-shaped cloth and the bottom crotch cloth on the sewing area. According to the bottom crotch strip pasting machine, multi-process machining is achieved, the automation degree is high, working errors are reduced, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing production equipment, in particular to a bottom crotch stripping machine. Background Art

[0002] When processing pants, there is a processing step of sewing the crotch piece at the bottom of the pants, which usually requires a taping machine. The taping machine folds the fabric and sews the folded fabric at the cross seam of the bottom crotch of the pants to seal it. It is common in work clothes, outdoor clothing, and some pants that need to withstand extra wear. For example, the utility model patent with announcement number CN201665765U discloses a taping machine with an improved structure, including a sewing machine body, the body of the sewing machine body is provided with a reeling rack, a flat sleeve is provided in front of the needle presser foot of the sewing machine body, the sleeve is vertically arranged, and its outlet faces the workbench of the sewing machine body; a transmission roller for conveying fabric is provided behind the needle presser foot of the sewing machine body.

[0003] However, in the process of sewing the tapes, workers still need to perform manual operations such as manually folding the tapes, manually cutting the tapes, and manually moving the tapes, which is prone to errors and reduces work efficiency. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the above-mentioned technology and is designed to provide a bottom crotch stripping machine, which realizes multi-process processing, has a high degree of automation, reduces working errors and improves working efficiency.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a bottom crotch taping machine, comprising a frame, a feeding assembly and a cutting assembly arranged in sequence along a feeding path on the frame, a pulling assembly and a folding assembly arranged at two sides of the cutting assembly, and a moving assembly and a sewing assembly arranged in sequence along the feeding path on the frame;

[0006] The material pulling assembly includes a first clamping mechanism and a first shifting mechanism, wherein the first clamping mechanism clamps the end of the strip of fabric, the shifting end of the first shifting mechanism is connected to the first clamping mechanism, and the first shifting mechanism adjusts the position of the first clamping mechanism in the transverse and longitudinal directions to make it reciprocate from the cutting assembly to the folding assembly to pull the strip of fabric on the feeding assembly along the feeding path through the cutting assembly;

[0007] The cutting assembly is used to cut the strip of fabric on the feeding path;

[0008] The folding assembly is used to clamp and fold the two sides of the strip of fabric cut by the cutting assembly;

[0009] The material transfer component includes a second clamping mechanism and a second displacement mechanism. The second clamping mechanism clamps the folded two side parts of the strip-shaped fabric. The displacement end of the second displacement mechanism is connected to the second clamping mechanism. The second displacement mechanism adjusts the position of the second clamping mechanism in the diagonal, horizontal, and vertical directions to reciprocate it from the folding component to the sewing component for feeding materials to the sewing area.

[0010] The sewing component is used to sew the strip-shaped fabric and the crotch fabric in the sewing area.

[0011] Preferably, a control component is further included. The feeding component, the material pulling component, the cutting component, the folding component, the material transfer component, and the sewing component are all connected to and controlled by the control component.

[0012] Preferably, the first displacement mechanism includes a first horizontal translation device and a first vertical translation device. The translation end of the first horizontal translation device is connected to the first vertical translation device. The first horizontal translation device moves the first vertical translation device along the feeding path. The translation end of the first vertical translation device is connected to the first clamping mechanism. The first vertical translation device moves the first clamping mechanism along the vertical direction to make it enter or exit the feeding path.

[0013] Preferably, the second displacement mechanism includes a mounting frame, a diagonal translation device, a second horizontal translation device, and a second vertical translation device. The two ends of the mounting frame respectively correspond to the feeding component and the sewing component. The diagonal translation device is arranged on the mounting frame. The translation end of the diagonal translation device is connected to the second horizontal translation device. The diagonal translation device moves the second horizontal translation device along the feeding path. The translation end of the second horizontal translation device is connected to the second vertical translation device. The second horizontal translation device moves the second vertical translation device along the horizontal direction. The translation end of the second vertical translation device is connected to the second clamping mechanism. The second vertical translation device moves the second clamping mechanism along the vertical direction to make it enter the sewing area of the sewing component.

[0014] Preferably, the cutting component includes a placement rack, a movable rack, a cutter head part, and a cutter head lifting device. The top surface of the placement rack is for placing the strip-shaped fabric. The cutter head part is arranged at the top end of the movable rack. The cutter head lifting device is arranged on the placement rack. The lifting end of the cutter head lifting device is connected to the movable rack. The cutter head lifting device moves the movable rack along the vertical direction to make the cutter head part move up and down relative to the top surface of the placement rack.

[0015] Preferably, a guiding frame and an auxiliary pressing piece are arranged on the top surface of the placing rack. The guiding frame is provided with guiding rollers, and the strip-shaped fabric passes through the guiding rollers and is positioned in the clamping space formed between the auxiliary pressing piece and the top surface of the placing rack.

[0016] Preferably, a pressing piece lifting device is arranged on the placing rack, and the lifting end of the pressing piece lifting device is connected to the auxiliary pressing piece.

[0017] Preferably, the folding assembly includes a translation rack, two third clamping mechanisms, two folding plate structures and a third lateral translation mechanism. The two third clamping mechanisms are arranged at intervals above the translation rack. The two third clamping mechanisms respectively clamp the two side parts of the strip-shaped fabric cut by the material cutting assembly. The two folding plate structures are respectively arranged on the two third clamping mechanisms. The second clamping mechanism is provided with a third displacement mechanism, and the displacement end of the third displacement mechanism is connected to the folding plate structure. The third displacement mechanism adjusts the position of the folding plate structure in the horizontal and vertical directions to drive the end of the strip-shaped fabric to fold. The translation end of the third lateral translation mechanism is connected to the translation rack, and the third lateral translation mechanism moves the translation rack along the feeding path to reciprocate from the feeding path to the loading path, so as to load the folded strip-shaped fabric on the loading path.

[0018] Preferably, the folding assembly further includes a fourth lateral translation mechanism. The fourth lateral translation mechanism is arranged on the translation rack. One of the third clamping mechanisms is slidably connected to the translation rack in the horizontal direction, and the other third clamping mechanism is fixedly connected to the translation rack. The translation end of the fourth lateral translation mechanism is connected to the third clamping mechanism that slides horizontally.

[0019] Preferably, the sewing assembly includes a sewing machine body and a material pressing mechanism. The material pressing mechanism includes a pressing frame member, a pressing frame lifting mechanism and a pressing frame telescopic mechanism. The hollow area of the pressing frame member corresponds to the sewing area. The lifting end of the pressing frame lifting mechanism is connected to the pressing frame telescopic mechanism, and the telescopic end of the pressing frame telescopic mechanism is connected to the pressing frame member. The pressing frame lifting mechanism moves the position of the pressing frame member vertically to press or separate the strip-shaped fabric and the bottom crotch fabric on the sewing area. The sewing end of the sewing machine body corresponds to the sewing area and stitches the strip-shaped fabric and the bottom crotch fabric on the sewing area.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] In this utility model, a strip of fabric is placed on the loading component. The pulling component drives the strip of fabric to move along the feeding path and pass through the cutting component. After the cutting component cuts the strip of fabric, the folding component clamps and folds its two ends. Then, the folded strip of fabric is sent to the sewing area of the sewing component by the material transferring component, so that the staff can place the crotch fabric on the sewing area and sew and fix the seam of the crotch fabric with the folded strip of fabric, completing the sewing operation for crotch reinforcement, realizing multi-process processing, eliminating operations such as manual folding, manual cutting, and manual material transfer, with a relatively high degree of automation, reducing working errors, and improving work efficiency. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the strip pasting machine in the embodiment Figure One ;

[0023] Figure 2 is a schematic structural diagram of the strip pasting machine in the embodiment Figure Two ;

[0024] Figure 3 is a schematic structural diagram of the loading component and the cutting component in the embodiment;

[0025] Figure 4 is a schematic structural diagram of the pulling component in the embodiment;

[0026] Figure 5 is a schematic structural diagram of the folding component in the embodiment;

[0027] Figure 6 is a schematic structural diagram of the material transferring component in the embodiment;

[0028] Figure 7 is a schematic structural diagram of the sewing component in the embodiment.

[0029] In the figure: 1, frame; 2, feeding component; 3, cutting component; 31, placing rack; 32, movable rack; 33, cutter head component; 34, cutter head lifting device; 311, guiding component; 312, guiding rack; 313, auxiliary pressing piece; 314, guiding roller; 315, pressing piece lifting device; 321, guiding groove; 4, pulling component; 41, first clamping mechanism; 42, first shifting mechanism; 421, first horizontal translation device; 422, first vertical translation device; 5, folding component; 51, translation rack; 52, third clamping mechanism; 53, folding plate structure; 54, third horizontal translation mechanism; 55, third shifting mechanism; 551, fifth horizontal translation mechanism; 552, folding plate lifting mechanism; 56, fourth horizontal translation mechanism; 6, material shifting component; 61, second clamping mechanism; 611, clamping plate; 612, pressing strip; 62, second shifting mechanism; 621, mounting rack; 622, oblique translation device; 623, second horizontal translation device; 624, second vertical translation device; 7, sewing component; 71, sewing machine body; 72, material pressing mechanism; 721, pressing frame component, 722, frame lifting mechanism; 723, pressing frame telescopic mechanism; 73, presser foot; 8, control component; 81, touch screen; 82, electric control box. Specific embodiments

[0030] The present utility model will be further described below through embodiments in conjunction with the accompanying drawings.

[0031] Refer to Figures 1 to 7 , a bottom crotch sticker machine, comprising a frame 1, a feeding component 2, a cutting component 3, a pulling component 4, a folding component 5, a material shifting component 6, a sewing component 7, and a control component 8. The frame 1 has a feeding path extending horizontally and a feeding path extending obliquely, and the feeding path and the feeding path are arranged intersectingly.

[0032] The feeding component 2 and the cutting component 3 are arranged in sequence along the feeding path on the frame 1. The pulling component 4 and the folding component 5 are arranged oppositely on both sides of the cutting component 3. The material shifting component 6 and the sewing component 7 are arranged in sequence along the feeding path on the frame 1. The feeding component 2, the pulling component 4, the cutting component 3, the folding component 5, the material shifting component 6, and the sewing component 7 are all connected to the control component 8 and controlled by it. Preferably, the control component 8 includes a touch screen 81 and an electric control box 82, and the touch screen 81 is electrically connected to the electric control box 82.

[0033] The feeding component 2 is a winding rack, and the wound strip-shaped fabric can be placed on the feeding component 2 and unwound.

[0034] The material pulling assembly 4 includes a first clamping mechanism 41 and a first shifting mechanism 42. The first clamping mechanism 41 is a pneumatic finger cylinder, and the clamping end of the first clamping mechanism 41 clamps the end of the strip-shaped fabric. The first shifting mechanism 42 includes a first horizontal translation device 421 and a first vertical translation device 422. The first horizontal translation device 421 is a lead screw motor, and the first vertical translation device 422 is a telescopic cylinder. The translation end of the first horizontal translation device 421 is connected to the first vertical translation device 422. The first horizontal translation device 421 moves the first vertical translation device 422 along the feeding path. The translation end of the first vertical translation device 422 is connected to the first clamping mechanism 41. The first vertical translation device 422 moves the first clamping mechanism 41 longitudinally to make it enter or exit the feeding path.

[0035] The first shifting mechanism 42 adjusts the position of the first clamping mechanism 41 in the horizontal and vertical directions to reciprocate it from the cutting component 3 to the folding component 5, so as to traction the strip-shaped fabric on the feeding component 2 along the feeding path through the cutting component 3.

[0036] The cutting component 3 includes a placement rack 31, a movable rack 32, a cutter head part 33, and a cutter head lifting device 34. The placement rack 31 is fixedly connected to the machine frame 1. A guide rack 312 and an auxiliary pressing piece 313 are arranged on the top surface of the placement rack 31. A guide roller 314 is arranged on the guide rack 312. The strip-shaped fabric being pulled passes through the guide roller 314 and is positioned in the clamping space formed between the auxiliary pressing piece 313 and the top surface of the placement rack 31 to ensure that the top surface of the placement rack 31 is for the strip-shaped fabric to be placed horizontally. Preferably, a pressing piece lifting device 315 is arranged on the placement rack 31. The pressing piece lifting device 315 is a telescopic cylinder, and the lifting end of the pressing piece lifting device 315 is connected to the auxiliary pressing piece 313, so that the gap of the clamping space can be adjusted to adapt to strip-shaped fabrics of different thicknesses.

[0037] The movable rack 32 is a U-shaped rack. Guide grooves 321 are penetrated through both side parts of the movable rack 32. Guide parts 311 slidably connected in the guide grooves 321 are arranged on both side parts of the placement rack 31 to guide the movable rack 32 to slide relative to the placement rack 31. The cutter head part 33 is arranged on the top end of the movable rack 32. The cutter head lifting device 34 is arranged on the placement rack 31. The cutter head lifting device 34 is a telescopic cylinder, and the lifting end of the cutter head lifting device 34 is connected to the movable rack 32. The cutter head lifting device 34 moves the movable rack 32 vertically to make the cutter head part 33 move up and down relative to the top surface of the placement rack 31. The auxiliary pressing piece 313 has a cutting space for the cutter head part 33 to pass through, so that the cutting component 3 cuts the strip-shaped fabric on the feeding path.

[0038] The staff can control the travel length of the first clamping mechanism 41 to traction the strip-shaped fabric through the control component 8, so as to control the preset size of the strip-shaped fabric. The cutting component 3 automatically cuts the strip-shaped fabric according to the preset size.

[0039] The folding assembly 5 includes a translation frame 51, two third clamping mechanisms 52, two folding plate structures 53, a third lateral translation mechanism 54, and a fourth lateral translation mechanism 56. The third clamping mechanism 52 is a pneumatic finger cylinder. The two third clamping mechanisms 52 are arranged at intervals above the mounting frame 621 to respectively clamp the two side portions of the strip-shaped fabric cut by the cutting assembly 3. The folding plate structure 53 is an L-shaped plate. The two folding plate structures 53 are arranged oppositely, and the two folding plate structures 53 are respectively arranged on the two third clamping mechanisms 52. The second clamping mechanism 61 is provided with a third displacement mechanism 55. The third displacement mechanism 55 includes a fifth lateral translation mechanism 551 and a folding plate lifting mechanism 552. The fifth lateral translation mechanism 551 is a telescopic cylinder. The translation end of the fifth lateral translation mechanism 551 is connected to the folding plate lifting mechanism 552. The folding plate lifting mechanism 552 is a telescopic cylinder. The lifting end of the folding plate lifting mechanism 552 is connected to the folding plate structure 53. The third lateral translation mechanism 54 is an electric linear slide. The translation end of the third lateral translation mechanism 54 is connected to the translation frame 51. The third lateral translation mechanism 54 moves the translation frame 51 along the feeding path to reciprocate it from the feeding path to the loading path.

[0040] After the two side portions of the strip-shaped fabric are clamped by the two third clamping mechanisms 52, the first longitudinal translation device 422 drives the first clamping mechanism 41 out of the feeding path to avoid interfering with the operation of the folding assembly 5. The third displacement mechanism 55 adjusts the position of the folding plate structure 53 in the horizontal and vertical directions so that it drives the end of the strip-shaped fabric to be folded. During this process, the two folding plate structures 53 are separated from each other to avoid the two third clamping structures. The folding plate lifting mechanism 552 first drives the folding plate structure 53 to rise and approach each other so that the corresponding ends of the strip-shaped fabric are folded upward. Then, the folding plate lifting mechanism 552 drives the folding plate structure 53 to descend so that it cooperates with the corresponding third clamping structure to clamp the folded end of the strip-shaped fabric to maintain the folded state of the strip-shaped fabric. After that, the folding assembly 5 feeds the folded strip-shaped fabric on the loading path through the third lateral translation mechanism 54.

[0041] Preferably, the fourth lateral translation mechanism 56 is arranged on the translation frame 51. One of the third clamping mechanisms 52 is slidably connected to the translation frame 51 in the lateral direction, and the other third clamping mechanism 52 is fixedly connected to the translation frame 51. The fourth lateral translation mechanism 56 is a screw motor. The translation end of the fourth lateral translation mechanism 56 is connected to the laterally sliding third clamping mechanism 52, which is convenient for adjusting the distance between the two third clamping mechanisms 52 to adapt to the length of the cut strip-shaped fabric.

[0042] The material moving assembly 6 includes a second clamping mechanism 61 and a second shifting mechanism 62. The clamping ends of the second clamping mechanism 61 are two clamping plates 611 that can open and close relative to each other. The two clamping plates 611 are driven by two telescopic cylinders respectively. The clamping plates 611 are detachably connected to two oppositely arranged pressure strips 612, so that the second clamping mechanism 61 clamps the folded two side portions of the strip of fabric, and the two pressure strips 612 can adjust the spacing along the length direction of the clamping plates 611 to adapt to the length of the strip of fabric after the two ends are folded.

[0043] The second shift mechanism 62 includes a mounting frame 621, an oblique translation device 622, a second lateral translation device 623, and a second longitudinal translation device 624. The two ends of the mounting frame 621 correspond to the feeding assembly 2 and the sewing assembly 7 respectively. The oblique translation device 622 is arranged on the mounting frame 621. The oblique translation device 622 is an electric linear slide. The translation end of the oblique translation device 622 is connected to the second lateral translation device 623. The oblique translation device 622 moves the second lateral translation device 623 along the feeding path. The second lateral translation device 623 is a telescopic cylinder. The second lateral translation device The translation end of 623 is connected to the second longitudinal translation device 624, and the second transverse translation device 623 moves the second longitudinal translation device 624 transversely. The second longitudinal translation device 624 is a telescopic cylinder. The translation end of the second longitudinal translation device 624 is connected to the second clamping mechanism 61, and the second longitudinal translation device 624 moves the second clamping mechanism 61 longitudinally to make it enter the sewing area of ​​the sewing component 7, so that the second shifting mechanism 62 adjusts the position of the second clamping mechanism 61 in the oblique, transverse and longitudinal directions to make it move back and forth from the folding component 5 to the sewing component 7 to feed the material to the sewing area.

[0044] The sewing assembly 7 includes a sewing machine body 71, a material pressing mechanism 72, and a presser foot 73. The material pressing mechanism 72 includes a press frame member 721, a press frame lifting mechanism 722, and a press frame telescopic mechanism 723. The hollow area of ​​the press frame member 721 corresponds to the sewing area. The press frame lifting mechanism 722 is a telescopic cylinder. The lifting end of the press frame lifting mechanism 722 is connected to the press frame telescopic mechanism 723. The press frame telescopic mechanism 723 is a telescopic cylinder. The telescopic end of the press frame telescopic mechanism 723 is connected to the press frame member 721. Next, the pressing frame telescopic mechanism 723 moves the pressing frame member 721 longitudinally to make it enter or leave the sewing area, and the pressing frame lifting mechanism 722 moves the position of the pressing frame member 721 vertically to press the edge of or leave the strip of fabric and the crotch fabric on the sewing area. The presser foot 73 is a rectangular frame structure, and the hollow area of ​​the presser foot 73 is for the sewing end of the sewing machine body 71 to pass through. The sewing end of the sewing machine body 71 corresponds to the sewing area, and the strip of fabric and the crotch fabric on the sewing area are sewed.

[0045] The sticker pasting machine feeds the strip-shaped fabric onto the feeding component 2, and the material pulling component 4 drives the strip-shaped fabric to move along the feeding path and pass through the cutting component 3. After the cutting component 3 cuts the strip-shaped fabric, the folding component 5 clamps and folds its two ends. Then, the folded strip-shaped fabric is sent to the sewing area of the sewing component 7 by the material moving component 6, so that the staff can place the crotch fabric on the sewing area and sew and fix the seam of the crotch fabric with the folded strip-shaped fabric, completing the sewing operation for crotch reinforcement, realizing multi-process processing, eliminating operations such as manual folding, manual cutting, and manual material moving, with a relatively high degree of automation, reducing working errors, and improving work efficiency.

[0046] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. A bottom crotch tape machine, characterized by: It comprises a frame (1), a feeding assembly (2) and a cutting assembly (3) arranged in sequence along a feeding path on the frame (1), a pulling assembly (4) and a folding assembly (5) arranged at two sides of the cutting assembly (3), and a moving assembly (6) and a sewing assembly (7) arranged in sequence along the feeding path on the frame (1); The material pulling assembly (4) comprises a first clamping mechanism (41) and a first shifting mechanism (42), wherein the first clamping mechanism (41) clamps the end of the strip of fabric, the shifting end of the first shifting mechanism (42) is connected to the first clamping mechanism (41), and the first shifting mechanism (42) adjusts the position of the first clamping mechanism (41) in the transverse and longitudinal directions to make it reciprocate from the cutting assembly (3) to the folding assembly (5) so as to pull the strip of fabric on the feeding assembly (2) along the feeding path and pass through the cutting assembly (3); The cutting component (3) is used to cut the strip of fabric on the feeding path; The folding assembly (5) is used to clamp and fold the two side portions of the strip of fabric cut by the cutting assembly (3); The material transfer assembly (6) comprises a second clamping mechanism (61) and a second shifting mechanism (62), wherein the second clamping mechanism (61) clamps the folded two side portions of the strip-shaped fabric, the shifting end of the second shifting mechanism (62) is connected to the second clamping mechanism (61), and the second shifting mechanism (62) adjusts the position of the second clamping mechanism (61) in the oblique, transverse and longitudinal directions so that the second clamping mechanism (61) reciprocates from the folding assembly (5) to the sewing assembly (7) to feed the fabric to the sewing area; The sewing assembly (7) is used to sew the belt-shaped fabric and the crotch fabric in the sewing area.

2. A crotch tape machine according to claim 1, characterized in that: It also comprises a control component (8), and the feeding component (2), the pulling component (4), the cutting component (3), the folding component (5), the moving component (6), and the sewing component (7) are all connected to and controlled by the control component (8).

3. The bottom crotch tape machine according to claim 1, characterized in that: The first shifting mechanism (42) comprises a first transverse translation device (421) and a first longitudinal translation device (422); the translation end of the first transverse translation device (421) is connected to the first longitudinal translation device (422); the first transverse translation device (421) moves the first longitudinal translation device (422) along a feeding path; the translation end of the first longitudinal translation device (422) is connected to the first clamping mechanism (41); the first longitudinal translation device (422) moves the first clamping mechanism (41) longitudinally to make it enter or leave the feeding path.

4. The bottom crotch tape machine according to claim 1, characterized in that: The second shifting mechanism (62) comprises a mounting frame (621), an oblique translation device (622), a second transverse translation device (623), and a second longitudinal translation device (624); the two ends of the mounting frame (621) correspond to the feeding assembly (2) and the sewing assembly (7), respectively; the oblique translation device (622) is arranged on the mounting frame (621); the translation end of the oblique translation device (622) is connected to the second transverse translation device (623); the oblique translation device (622) is arranged along the feeding assembly (2) and the sewing assembly (7); The second transverse translation device (623) is moved along a path; the translation end of the second transverse translation device (623) is connected to the second longitudinal translation device (624); the second transverse translation device (623) moves the second longitudinal translation device (624) in the transverse direction; the translation end of the second longitudinal translation device (624) is connected to the second clamping mechanism (61); the second longitudinal translation device (624) moves the second clamping mechanism (61) in the longitudinal direction so that it enters the sewing area of ​​the sewing assembly (7).

5. The bottom crotch tape machine according to claim 1, characterized in that: The cutting assembly (3) comprises a placing frame (31), a movable frame (32), a cutter head (33), and a cutter head lifting device (34); the top surface of the placing frame (31) is used for placing the strip of cloth; the cutter head (33) is arranged on the top of the movable frame (32); the cutter head lifting device (34) is arranged on the placing frame (31); the lifting end of the cutter head lifting device (34) is connected to the movable frame (32); the cutter head lifting device (34) moves the movable frame (32) vertically so that the cutter head (33) performs lifting movement relative to the top surface of the placing frame (31).

6. A crotch tape machine according to claim 5, characterized in that: The top surface of the placement rack (31) is provided with a guide rack (312) and an auxiliary pressing plate (313); the guide rack (312) is provided with a guide roller (314); the strip of fabric passes through the guide roller (314) and is positioned in a clamping space formed between the auxiliary pressing plate (313) and the top surface of the placement rack (31).

7. A crotch tape machine according to claim 6, characterized in that: The placement rack (31) is provided with a tablet pressing lifting device (315), and the lifting end of the tablet pressing lifting device (315) is connected to the auxiliary tablet pressing (313).

8. The crotch tape machine according to claim 1, characterized in that: The folding assembly (5) comprises a translation frame (51), two third clamping mechanisms (52), two folding plate structures (53) and a third lateral translation mechanism (54). The two third clamping mechanisms (52) are arranged above the translation frame (51) at intervals. The two third clamping mechanisms (52) respectively clamp two side portions of the strip-shaped fabric cut by the cutting assembly (3). The two folding plate structures (53) are respectively arranged on the two third clamping mechanisms (52). The second clamping mechanism (61) is provided with a third displacement mechanism (61). The third shifting mechanism (55) has a shifting end connected to the folding plate structure (53), and the third shifting mechanism (55) adjusts the position of the folding plate structure (53) in the horizontal and vertical directions so as to drive the end of the strip of fabric to fold, and the third lateral translation mechanism (54) has a translation end connected to the translation frame (51), and the third lateral translation mechanism (54) moves the translation frame (51) along the feeding path so as to reciprocate from the feeding path to the loading path, so as to load the folded strip of fabric onto the loading path.

9. A crotch tape machine according to claim 8, characterized in that: The folding assembly (5) further comprises a fourth transverse translation mechanism (56), which is arranged on the translation frame (51), wherein one of the third clamping mechanisms (52) is connected to the translation frame (51) in a transverse sliding manner, and the other of the third clamping mechanisms (52) is fixedly connected to the translation frame (51), and the translation end of the fourth transverse translation mechanism (56) is connected to the transversely sliding third clamping mechanism (52).

10. The crotch tape machine according to claim 1, characterized in that: The sewing assembly (7) comprises a sewing machine body (71) and a material pressing mechanism (72); the material pressing mechanism (72) comprises a pressing frame member (721), a pressing frame lifting mechanism (722), and a pressing frame telescopic mechanism (723); the hollow area of ​​the pressing frame member (721) corresponds to the sewing area; the lifting end of the pressing frame lifting mechanism (722) is connected to the pressing frame telescopic mechanism (723); the telescopic end of the pressing frame telescopic mechanism (723) is connected to the pressing frame member (721); the pressing frame lifting mechanism (722) moves the position of the pressing frame member (721) vertically so that it presses or separates the strip of fabric and the bottom crotch fabric on the sewing area; the sewing end of the sewing machine body (71) corresponds to the sewing area and sews the strip of fabric and the bottom crotch fabric on the sewing area.

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