Edge folding device applied to patch pocket machine

Abstract

The utility model discloses an edge folding device applied to a patch pocket machine, which belongs to the technical field of sewing equipment and comprises a base connected with a frame, a support frame is arranged on the base, one end of the bottom of the support frame is rotatably connected with the base, the other end of the bottom of the support frame is connected with a jacking mechanism, and a horizontal pushing component is arranged on the support frame. A horizontal positioning assembly is arranged below the horizontal pushing assembly; a lifting assembly connected with the movable end of the horizontal pushing assembly is arranged on the side face of the supporting frame, and an edge folding assembly is arranged at the lower end of the lifting assembly. The supporting frame capable of adjusting the angle is installed on the base, the lifting assembly is moved to the edge folding station through the jacking mechanism and the horizontal jacking assembly, and the die assembly is positioned through the horizontal positioning assembly; the edge folding assembly is driven by the lifting assembly to fold the edge of the pocket cloth. The edge folding device has the advantages of being simple and compact in structure, small in size and high in edge folding efficiency, meanwhile, the failure rate and the manufacturing cost of equipment are reduced, and the edge folding accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing equipment, in particular to a folding device used in a pocket sticking machine. Background Art

[0002] Pockets on denim garments are sewn using a pocket patching machine, which uses a non-ironing, cold-folding sewing process. The hemming device is a crucial component of this machine, as the quality of the hemming directly impacts the final sewing quality. Currently, existing hemming devices suffer from complex structures, high costs, and poor accuracy, severely hindering the mass production of denim garments. Utility Model Content

[0003] The utility model aims to provide a folding device applied to a pocket pasting machine, aiming to solve the technical problems of the existing folding device having a complex structure, high cost and poor accuracy.

[0004] In order to solve the above technical problems, the technical solution adopted by the present utility model is:

[0005] A folding device used in a pocket-sticking machine includes a base connected to a frame, a support frame provided on the base, one end of the bottom of the support frame being rotatably connected to the base and the other end being connected to a lifting mechanism, a horizontal pushing assembly provided on the support frame, and a horizontal positioning assembly provided below the horizontal pushing assembly for positioning the mold assembly; a lifting assembly is provided on the side of the support frame, the lifting assembly being connected to the movable end of the horizontal pushing assembly, and a folding assembly is provided at the lower end of the lifting assembly for folding the edge of the pocket fabric.

[0006] Preferably, the lifting assembly includes a lifting cylinder, a mounting frame and a fixed frame, the cylinder body of the lifting cylinder is arranged on the top of the mounting frame, the folding assembly is arranged inside the fixed frame, and the mold assembly is arranged inside the fixed frame; one end of the fixed frame is slidably engaged with the guide rail on the outer side of the mounting frame through a slider, and the end of the piston rod of the lifting cylinder is connected to the slider.

[0007] Preferably, the folding assembly includes a plurality of folding cylinders, the mold assembly includes a plurality of molds, the molds can be inserted into the latch of the bottom mold, the piston rod of the folding cylinder is connected to the push plate, the plurality of molds are correspondingly arranged at the edges of the pockets to be folded, and the plurality of folding cylinders are respectively used to fold the side edges of the pocket fabric; the plurality of folding cylinders are arranged inside the fixing frame, the top of the fixing frame is provided with a cover plate, the bottom mold is arranged under the bottom plate of the fixing frame, and the bottom plate of the fixing frame is provided with a hollow area corresponding to the mold.

[0008] Preferably, the multiple molds are respectively a bottom mold, two side molds, and two bottom corner molds; the multiple flanging cylinders are respectively a bottom pushing and pulling cylinder, two side pushing and pulling cylinders, and two bottom corner pushing and pulling cylinders. The cylinders of the bottom pushing and pulling cylinder and the two side pushing and pulling cylinders are integrated in the middle of the fixing frame, and the two bottom corner pushing and pulling cylinders are inclined and arranged between the two side molds and the bottom mold.

[0009] Preferably, a third travel switch is provided at the top of the mounting frame. The third travel switch can be linked with the lifting cylinder to control the upward travel of the fixing frame and the flanging assembly.

[0010] Preferably, the support frame is of a frame structure, including two front and rear support plates and two vertical plates arranged side by side on both sides. The horizontal pushing assembly and the horizontal positioning assembly are arranged vertically side by side between the two vertical plates. Both the horizontal pushing assembly and the horizontal positioning assembly are connected to the support plates. A downwardly protruding connecting portion is provided at the bottom of the rear side of the vertical plate, and the connecting portions of the two vertical plates are respectively rotatably connected to both ends of a rotating shaft. The rotating shaft is horizontally arranged on the base.

[0011] Preferably, the horizontal pushing assembly includes a horizontally moving cylinder and multiple first guide rods arranged in parallel. The multiple first guide rods are arranged around the horizontally moving cylinder. The first guide rods are in sliding fit with the two support plates. The front ends of the first guide rods penetrate through the front support plate and are connected to the mounting frame of the lifting assembly. The end of the piston rod of the horizontally moving cylinder penetrates through the front support plate and is connected to the mounting frame. The rear ends of the first guide rods penetrate through the rear support plate, and the rear ends of the multiple first guide rods are connected to a first end plate. The cylinder body of the horizontally moving cylinder is arranged between the two support plates and is connected to the front support plate.

[0012] Preferably, the horizontal positioning assembly includes a horizontal positioning cylinder and multiple second guide rods. The multiple second guide rods are arranged side by side outside the horizontal positioning cylinder. The cylinder body of the horizontal positioning cylinder is fixed on an intermediate plate. The intermediate plate is arranged between the two support plates. The end of the piston rod of the horizontal positioning cylinder penetrates through the intermediate plate and is connected to a positioning plate. The front ends of the multiple second guide rods penetrate through the intermediate plate and are connected to the positioning plate. The rear ends of the multiple second guide rods penetrate through the rear support plate and are connected to a second end plate.

[0013] Preferably, there are four first guide rods and two second guide rods. A plurality of first travel switches linked to the horizontal movement cylinder are respectively provided on the first end plate and the front side support plate. The front and rear first travel switches can abut against the rear side support plate and the mounting bracket to limit the travel of the first end plate and the hemming assembly; a through hole for the cylinder body of the horizontal movement cylinder to pass through is provided in the middle of the first end plate; a plurality of second travel switches linked to the horizontal positioning cylinder are respectively provided on the second end plate and the middle plate. The front and rear second travel switches can abut against the rear side support plate and the positioning plate to limit the travel of the second end plate and the positioning plate; a notch for the cylinder body of the horizontal positioning cylinder to pass through is provided in the middle of the second end plate.

[0014] Preferably, the lifting mechanism is a lifting cylinder. The cylinder body of the lifting cylinder is rotatably connected to the machine frame, and the end of the piston rod of the lifting cylinder is rotatably connected to the bottom of the support frame.

[0015] Compared with the prior art, the beneficial effects produced by the present utility model are as follows:

[0016] By means of a support frame capable of adjusting the pitching angle on the base, and using the lifting mechanism and the horizontal pushing assembly on the support frame, the present utility model can push the lifting assembly to the hemming station, and position the die assembly by means of the horizontal positioning assembly at the lower part of the support frame; then the hemming assembly is driven by the lifting assembly to hem the edge of the pocket fabric. The present utility model has the advantages of simple and compact structure, small volume, high hemming efficiency, and at the same time reduces the failure rate and manufacturing cost of the equipment, improves the hemming accuracy, and is especially suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0018] In the drawings:

[0019] Figure 1 is a schematic structural diagram of a hemming device applied to a patch pocket machine provided by an embodiment of the present utility model;

[0020] Figure 2 is Figure 1 a schematic structural diagram of the hemming device in (removing one side support plate);

[0021] Figure 3 is Figure 1 a schematic diagram of the cooperation between the internal hemming assembly and the die after removing the cover plate of the fixing frame in;

[0022] In the figure:

[0023] 1 - Base; 2 - Support frame, 20 - Connection part, 21 - Support plate, 22 - Vertical plate, 23 - Rotating shaft, 24 - Intermediate plate, 25 -; 3 - Horizontal pushing component, 31 - Horizontal moving cylinder, 32 - First guiding rod, 33 - First end plate; 4 - Horizontal positioning component, 41 - Horizontal positioning cylinder, 42 - Second guiding rod, 43 - Positioning plate, 44 - Second end plate; 5 - Lifting component, 50 - Slide block, 51 - Lifting cylinder, 52 - Mounting bracket, 53 - Fixed bracket, 54 - Guide rail, 55 - Cover plate, 56 - Bottom plate; 6 - Flanging assembly, 60 - Bottom die, 61 - Flanging cylinder, 62 - Die, 63 - Plug pin, 64 - Pushing plate, 65 - Rotating cylinder; 7 - Third travel switch; 8 - First travel switch; 9 - Second travel switch; 10 - Jacking cylinder; 11 - Support. Detailed implementation manners

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the following detailed description of the present invention, some specific details are described in detail. However, those skilled in the art can also fully understand the present invention for the parts not described in detail.

[0025] In addition, those of ordinary skill in the art should understand that the accompanying drawings are only provided to illustrate the purpose, features and advantages of the present invention, and the drawings are not actually drawn to scale.

[0026] At the same time, unless the context clearly requires otherwise, words such as "including" and "comprising" in the whole specification and claims should be interpreted as having an inclusive meaning rather than an exclusive or exhaustive meaning; that is, the meaning of "including but not limited to".

[0027] Such as Figure 1As shown in the figure, a hemming device applied to a patch pocket machine includes a base 1 connected to a machine frame (not shown in the figure). A support frame 2 is provided on the base 1. One end of the bottom of the support frame 2 is rotatably connected to the base 1, and the other end is connected to a lifting mechanism. A horizontal pushing assembly 3 is provided on the support frame 2. A horizontal positioning assembly 4 is further provided below the horizontal pushing assembly 3 for positioning a mold assembly. A lifting assembly 5 is provided on the side of the support frame 2. The lifting assembly 5 is connected to the movable end of the horizontal pushing assembly 3. A hemming assembly 6 is provided at the lower end of the lifting assembly 5 for hemming the edge of the pocket fabric. The levelness of the horizontal pushing assembly and the horizontal positioning assembly in the support frame is adjusted by the lifting mechanism. The horizontal pushing assembly is used to push the lifting assembly to move to the hemming station, and then the mold assembly is positioned by the horizontal positioning assembly. The pocket fabric is placed on the mold assembly. Subsequently, the lifting assembly drives the hemming assembly to press on the pocket fabric and hem the edge of the pocket fabric. This solution has a simple and compact structure, a small volume, a faster hemming speed, a lower cost, and can improve the hemming accuracy and work efficiency.

[0028] In a specific embodiment of the present invention, as Figure 1 , Figure 2 shown, the lifting assembly 5 includes a lifting cylinder 51, a mounting frame 52, and a fixing frame 53. The cylinder body of the lifting cylinder 51 is arranged at the top of the mounting frame 52. The hemming assembly 6 is arranged inside the fixing frame 53. The mold assembly is arranged inside the fixing frame 53. One end of the fixing frame 53 is slidably matched with the guide rail 54 on the outer side of the mounting frame 52 through a slider 50. The end of the piston rod of the lifting cylinder 51 is connected to the slider 50. Among them, a third travel switch 7 is provided at the top of the mounting frame 52. The third travel switch 7 can be linked with the lifting cylinder 51 to control the upward travel of the fixing frame 53 and the hemming assembly 6. By driving the hemming assembly 6 on the lower fixing frame 53 to descend by the lifting cylinder 51, the hemming assembly 6 can accurately press on the pocket fabric to be hemmed placed on the lower mold.

[0029] During specific production, as Figure 3As shown, the hemming assembly 6 includes a plurality of hemming cylinders 61, the die assembly includes a plurality of dies 62, and the die 62 can be inserted onto the pin 63 of the bottom die 60, facilitating quick die replacement; the piston rod of the hemming cylinder 61 is connected to the push plate 64; a plurality of dies 62 are correspondingly arranged at the edge of the pocket to be hemmed, and the piston rod of the hemming cylinder 61 can hem different sides of the pocket fabric through the push plate 64; a plurality of hemming cylinders 61 are arranged on the bottom plate 56 inside the fixing frame 53, a cover plate 55 is provided at the top of the fixing frame 53, the bottom die 60 and the die 62 are arranged below the bottom plate of the fixing frame 53, and a hollow area corresponding to the die 62 is provided on the bottom plate 56 of the fixing frame 53. The hemming cylinder descends with the fixing frame, pressing the middle part of the pocket fabric below the bottom plate, and the side edges then turn up along the inner side of the die; at the same time, a plurality of hemming cylinders 61 are started, and the hemming of the four sides of the pocket can be completed simultaneously, with simple, fast, accurate operation.

[0030] Figure 3 In the shown embodiment, the plurality of dies 62 are respectively a bottom edge die, two side edge dies, and two bottom corner dies; the plurality of hemming cylinders are respectively a bottom edge push-pull cylinder, two side edge push-pull cylinders, and two bottom corner push-pull cylinders. The cylinder bodies of the bottom edge push-pull cylinder and the two side edge push-pull cylinders are integrated on the bottom plate 56 in the middle of the fixing frame 53, and the two bottom corner push-pull cylinders are obliquely arranged between the two side edge dies and the bottom edge die. With this structure, a plurality of dies and a plurality of hemming cylinders can be integrated in the fixing frame, making the overall structure more compact and small.

[0031] Further optimizing the above solution, when hemming is required at all four corners of the pocket, two top corner dies are arranged at the other two corners opposite to the two bottom corners, and the top corner dies are driven by a rotary cylinder 65. During specific design, the number and position of the hemming cylinders can be adjusted according to different finished products to determine whether to install the rotary cylinder 65.

[0032] In a specific embodiment of the present utility model, such as Figure 1 、 2As shown, the support frame 2 is of a frame structure, including two front and rear support plates 21 and vertical plates 22 arranged in parallel on both sides. The horizontal pushing assembly 3 and the horizontal positioning assembly 4 are arranged vertically in parallel between the two vertical plates 22. Both the horizontal pushing assembly 3 and the horizontal positioning assembly 4 are connected to the support plate 21. At the bottom rear side of the vertical plate 22, there is a downward protruding connecting portion 20. The connecting portions 20 of the two vertical plates 22 are respectively rotatably connected to both ends of a rotating shaft 23. The rotating shaft 23 is horizontally arranged on the base 1. Among them, the lifting mechanism is a lifting cylinder 10. The cylinder body of the lifting cylinder 10 is rotatably connected to a support 11. The support 11 is fixed on the machine frame. The end of the piston rod of the lifting cylinder 10 passes through a gap reserved in the middle of the base 1 and is rotatably connected to the bottom of the middle plate 24 at the lower part of the support frame 2. By means of the lifting cylinder 10, the pitching angle of the support frame can be adjusted, and thus the levelness of the horizontal pushing assembly 3 and the horizontal positioning assembly 4 can be adjusted.

[0033] As a preferred structure, as Figure 2 shown, the horizontal pushing assembly 3 includes a horizontal moving cylinder 31 and multiple first guide rods 32 arranged in parallel. The multiple first guide rods 32 are arranged around the horizontal moving cylinder 31. The first guide rods 32 are in sliding fit with the two support plates 21. The front ends of the first guide rods 32 pass through the front support plate 21 and are connected to the mounting bracket 52 of the lifting assembly 5. The end of the piston rod of the horizontal moving cylinder 31 passes through the front support plate 21 and is connected to the mounting bracket 52. The rear ends of the first guide rods 32 pass through the rear support plate 21, and the rear ends of the multiple first guide rods 32 are connected to a first end plate 33. The cylinder body of the horizontal moving cylinder 31 is arranged between the two support plates 21 and is connected to the front support plate 21. Adopting this structure can enable the first guide rods to be in sliding fit with the guide holes on the support plates. The support plates can provide a guiding function to ensure the stable movement of the lifting assembly 5 and the hemming assembly at its lower end.

[0034] As a preferred structure, as Figure 2 shown, the horizontal positioning assembly 4 includes a horizontal positioning cylinder 41 and multiple second guide rods 42. The multiple second guide rods 42 are arranged in parallel on the outside of the horizontal positioning cylinder 41. The cylinder body of the horizontal positioning cylinder 41 is fixed on the middle plate 24. The middle plate 24 is arranged between the two support plates 21. The end of the piston rod of the horizontal positioning cylinder 41 passes through the middle plate 24 and is connected to a positioning plate 43. The front ends of the multiple second guide rods 42 pass through the middle plate 24 and are connected to the positioning plate 43. The rear ends of the multiple second guide rods 42 pass through the rear support plate 21 and are connected to a second end plate 44. The horizontal positioning assembly with this structure can accurately position the mold and the pocket fabric to be hemmed. After positioning, the positioning plate retracts, the lifting cylinder is started to make the hemming assembly accurately descend onto the pocket fabric to be hemmed, and the hemming cylinder is started to complete the hemming operation.

[0035] In Figure 2 In the illustrated embodiment, there are four first guide rods 32 and two second guide rods 42. A plurality of first travel switches 8 linked to the horizontal movement cylinder 31 are respectively provided on the first end plate 33 and the front side support plate 21. The front and rear arranged first travel switches 8 can abut against the rear side support plate 21 and the mounting bracket 52 to limit the travel of the first end plate 33 and the hemming assembly 6. A through hole for the cylinder body of the horizontal movement cylinder 31 to pass through is provided in the middle of the first end plate 33. A plurality of second travel switches 9 linked to the horizontal positioning cylinder 41 are respectively provided on the second end plate 44 and the middle plate 24. The front and rear arranged second travel switches 9 can abut against the rear side support plate 21 and the positioning plate 43 to limit the travel of the second end plate 44 and the positioning plate 43. A notch for the cylinder body of the horizontal positioning cylinder 41 to pass through is provided in the middle of the second end plate 44. Through the sliding cooperation of the first guide rod and the second guide rod with the support plate, the smoothness of the equipment operation is improved. By using the first travel switch 8 and the second travel switch 9, the movement accuracy of the horizontal movement cylinder 31 and the horizontal positioning cylinder 41 can be ensured, thereby improving the accuracy of the hemming operation.

[0036] During specific design, the lifting cylinder 51, a plurality of hemming cylinders, the horizontal movement cylinder 31 and the horizontal positioning cylinder 41 can be connected to the controller. At the same time, the third travel switch 7, the first travel switch 8 and the second travel switch 9 are all connected to the controller. The actions of each component are controlled by the controller to realize the linkage between each component, improving the automation degree and the hemming efficiency.

[0037] The working process of the present utility model is as follows:

[0038] First, start the horizontal positioning cylinder 41 to complete the positioning of the pocket fabric, and then start the horizontal movement cylinder 31 to guide and move the hemming assembly 6 above the specified pocket fabric. Then start the lifting cylinder 51 to lower the hemming assembly 6 until it contacts and presses the pocket fabric. Then, start a plurality of hemming cylinders 61 to start the hemming operation. The two side push-pull cylinders and the two bottom corner push-pull cylinders drive the corresponding push plates to contact the two side molds and the two bottom corner molds at the same time to complete the hemming operation of the sides and the bottom corners. Then the bottom edge push-pull cylinder drives the corresponding push plate to contact the bottom edge mold to complete the hemming operation of the bottom edge.

[0039] In summary, the present utility model has the advantages of simple and compact structure, small size, low cost and high hemming efficiency. Using cylinder drive can greatly reduce the operation cost and the failure rate and improve the hemming speed. By cooperating with the horizontal positioning component and a plurality of travel switches to improve the operation accuracy, and using the cooperation of the mold and the plug pin, the structure is simple, the replacement speed can be improved, and the hemming accuracy and the working efficiency are improved.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A hemming device applied to a patch pocket machine, characterized in that: It includes a base connected to the frame. A support frame is provided on the base. One end of the bottom of the support frame is rotatably connected to the base, and the other end is connected to a jacking mechanism. A horizontal pushing assembly is provided on the support frame, and a horizontal positioning assembly is further provided below the horizontal pushing assembly for positioning the mold assembly. An elevating assembly is provided on the side of the support frame. The elevating assembly is connected to the movable end of the horizontal pushing assembly, and a hemming assembly is provided at the lower end of the elevating assembly for hemming the edge of the pocket fabric.

2. The hemming device for a patch pocket machine according to claim 1, characterized in that: The elevating assembly includes an elevating cylinder, a mounting frame, and a fixing frame. The cylinder body of the elevating cylinder is arranged at the top of the mounting frame. The hemming assembly is arranged inside the fixing frame, and the mold assembly is arranged inside the fixing frame. One end of the fixing frame is slidably matched with the guide rail on the outer side of the mounting frame through a slider, and the end of the piston rod of the elevating cylinder is connected to the slider.

3. The hemming device for a patch pocket machine according to claim 2, wherein: The hemming assembly includes a plurality of hemming cylinders, and the mold assembly includes a plurality of molds. The molds can be inserted onto the pins of the bottom mold. The piston rod of the hemming cylinder is connected to a push plate. The plurality of molds are correspondingly arranged at the edge of the pocket to be hemmed, and the plurality of hemming cylinders are respectively used for hemming the side edges of the pocket fabric. The plurality of hemming cylinders are arranged inside the fixing frame. A cover plate is provided at the top of the fixing frame. The bottom mold is arranged below the bottom plate of the fixing frame, and a hollow area corresponding to the mold is provided on the bottom plate of the fixing frame.

4. The hemming device for a patch pocket machine according to claim 3, characterized in that: The plurality of molds are respectively a bottom edge mold, two side edge molds, and two bottom corner molds. The plurality of hemming cylinders are respectively a bottom edge push-pull cylinder, two side edge push-pull cylinders, and two bottom corner push-pull cylinders. The cylinder bodies of the bottom edge push-pull cylinder and the two side edge push-pull cylinders are integrated in the middle of the fixing frame, and the two bottom corner push-pull cylinders are obliquely arranged between the two side edge molds and the bottom edge mold.

5. The hemming device for a patch pocket machine according to claim 2, characterized in that: A third travel switch is provided at the top of the mounting frame. The third travel switch can be linked with the elevating cylinder to control the upward travel of the fixing frame and the hemming assembly.

6. The hemming device applied to a patch pocket machine according to claim 1, wherein: The support frame is of a frame structure, including two front and rear support plates and two vertical plates arranged side by side on both sides. The horizontal pushing assembly and the horizontal positioning assembly are arranged up and down side by side between the two vertical plates. The horizontal pushing assembly and the horizontal positioning assembly are both connected to the support plates. A downward protruding connecting portion is provided at the bottom of the rear side of the vertical plate. The connecting portions of the two vertical plates are respectively rotatably connected to both ends of a rotating shaft. The rotating shaft is horizontally arranged on the base.

7. The hemming device for a patch pocket machine according to claim 6, characterized in that: The horizontal pushing assembly includes a horizontal moving cylinder and a plurality of parallel first guide rods. The plurality of first guide rods are arranged around the horizontal moving cylinder. The first guide rods are slidably matched with the two support plates. The front end of the first guide rod penetrates through the front support plate and is connected to the mounting frame of the elevating assembly. The end of the piston rod of the horizontal moving cylinder penetrates through the front support plate and is connected to the mounting frame. The rear end of the first guide rod penetrates through the rear support plate, and the rear ends of the plurality of first guide rods are connected to a first end plate. The cylinder body of the horizontal moving cylinder is arranged between the two support plates and is connected to the front support plate.

8. The hemming device applied to a patch pocket machine according to claim 7, characterized in that: The horizontal positioning assembly includes a horizontal positioning cylinder and multiple second guide rods, and the multiple second guide rods are arranged in parallel on the outside of the horizontal positioning cylinder. The cylinder body of the horizontal positioning cylinder is fixed on the middle plate, and the middle plate is arranged between the two support plates; the end of the piston rod of the horizontal positioning cylinder passes through the middle plate and is connected to the positioning plate, the front ends of the multiple second guide rods pass through the middle plate and are connected to the positioning plate, and the rear ends of the multiple second guide rods pass through the rear support plate and are connected to the second end plate.

9. The hemming device applied to a patch pocket machine according to claim 8, characterized in that: There are four first guide rods and two second guide rods. The first end plate and the front support plate are respectively provided with a plurality of first stroke switches linked to the horizontal moving cylinder. The first stroke switches arranged in the front and rear can abut against the rear support plate and the mounting frame to limit the stroke of the first end plate and the folding assembly; the middle part of the first end plate is provided with a through hole for the cylinder body of the horizontal moving cylinder to pass through; the second end plate and the middle plate are respectively provided with a plurality of second stroke switches linked to the horizontal positioning cylinder. The second stroke switches arranged in the front and rear can abut against the rear support plate and the positioning plate to limit the stroke of the second end plate and the positioning plate; the middle part of the second end plate is provided with a notch for the cylinder body of the horizontal positioning cylinder to pass through.

10. A hemming device applied to a patch pocket machine according to any one of claims 1-9, characterized in that: The lifting mechanism is a lifting cylinder, the cylinder body of the lifting cylinder is rotatably connected to the frame, and the end of the piston rod of the lifting cylinder is rotatably connected to the bottom of the support frame.

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