An automatic sewing line for file bags and zippers

Abstract

The utility model discloses an automatic sewing production line of file bag and zipper, including sewing table, the front and rear both sides of sewing table lower surface each fixedly connected with a guide column board, the inside of guide column board is equipped with the guide cavity, the middle part of guide column board is equipped with bidirectional screw rod, one end of bidirectional screw rod is connected with the rotation of guide cavity one end, the other end of bidirectional screw rod is connected with the other end of guide cavity and runs through, the left and right ends of guide cavity inside each slidingly connected with a sliding block, the one end of bidirectional screw rod outer surface is equipped with clockwise spiral groove, and the beneficial effect is: the interval size between two sewing machines is adjusted according to the size of the file bag of making, and the file bag of different size is sewn and made, and the mesh cloth and zipper to be sewn are guided and combed respectively, which is favorable to prevent the displacement of zipper and mesh cloth in the production process and the influence of hemming on sewing effect.

Description

Technical Field

[0001] This utility model relates to the field of sewing technology for document bags and zippers, specifically to an automated sewing production line for document bags and zippers. Background Technology

[0002] An automated sewing production line for document bags and zippers is a production line used to automatically sew zippers to the edges of document bags. This type of production line typically includes: a material feeding mechanism (for feeding document bag and zipper materials to the sewing position), sewing equipment (for sewing the zipper to the edge of the document bag), a control system (for controlling the operation of the entire production line, ensuring accurate material feeding and sewing), an inspection system (for inspecting the sewing quality, ensuring that the zipper of each document bag is correctly sewn), and a cutting device (for cutting the sewn document bags to specified dimensions).

[0003] In existing automated sewing production lines for document bags and zippers, the two sewing machines on the double-sided sewing equipment are mostly fixed to the main body of the equipment. The distance between the two sewing machines cannot be adjusted according to the size of the document bag being sewn, which limits the use of the equipment. In addition, most double-sided sewing equipment does not have a zipper combing and limiting structure, which makes it easy for the zipper to curl during the sewing process, affecting the sewing effect. Utility Model Content

[0004] To solve the above-mentioned technical problems, an automatic sewing production line for document bags and zippers is provided. This technical solution addresses the issue that in existing automatic sewing production lines for document bags and zippers mentioned in the background, the two sewing machines on the double-sided sewing equipment are mostly fixed to the main body of the equipment, making it impossible to adjust the distance between the two sewing machines according to the size of the document bag being sewn, which limits the use of the equipment. Furthermore, most double-sided sewing equipment does not have a zipper combing and limiting structure, which makes it easy for the zipper to curl during the sewing process, affecting the sewing effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automated sewing production line for document bags and zippers includes a sewing table. A guide post plate is fixedly connected to the front and rear sides of the lower surface of the sewing table. A guide cavity is formed on the inner side of each guide post plate. A bidirectional spiral rod is provided in the middle of the guide post plate. One end of the bidirectional spiral rod is rotatably connected to one end of the guide cavity, and the other end of the bidirectional spiral rod is through-connected to the other end of the guide cavity. A slider is slidably connected to each of the left and right ends of the inner side of the guide cavity. A clockwise spiral groove is formed on one end of the outer surface of the bidirectional spiral rod, and a counterclockwise spiral groove is formed on the other end. The left and right ends of the bidirectional spiral rod are respectively through-connected to the bottom of a set of sliders. The cavity through which the bidirectional spiral rod and sliders pass is connected by an internally provided rack. A movable plate is fixedly connected to the top of the slider, and a sewing machine is fixedly connected to the middle of the top of the movable plate.

[0007] Preferably, a movable limiting cavity is provided in the middle of the upper surface of the suture table, and the upper part of the outer side of the movable plate is slidably connected to the movable limiting cavity.

[0008] Preferably, a combing groove is provided in the middle of the front side of the upper surface of the sewing table, and multiple combing rollers are evenly distributed above the inner side of the combing groove. A positioning pressure plate is provided in the middle above the combing groove. A lifting block is provided at each of the left and right ends of the positioning pressure plate. A lifting limit cavity column is engaged with the outer side below the lifting block. The positioning pressure plate and the lifting block are detachably connected. A zipper guide groove is provided on the front side of one end of the upper surface of the movable plate.

[0009] Preferably, an adjustment limiting groove is provided in the middle of the inner side of the positioning pressure plate, and a lifting block is slidably connected to each of the left and right ends of the inner side of the adjustment limiting groove. A first adjusting nut is rotatably connected to the middle of the inner side of the lifting block, and a mounting frame plate is rotatably connected to the bottom of the first adjusting nut. A positioning roller is rotatably connected to the bottom of the inner side of the mounting frame plate, and an upper zipper comb plate is fixedly connected to the middle of the upper part of the inner side of the mounting frame plate.

[0010] Preferably, an adjustment groove is provided on the inner wall of each of the left and right ends of the combing groove. A positioning plate is slidably connected to the inner side of the adjustment groove. Multiple combing rollers are equidistantly distributed at one end of the positioning plate and are rotatably connected to one end of the positioning plate. A second adjusting nut is rotatably connected to the middle of the top of the positioning plate. The second adjusting nut is through-connected to the middle of the upper inner side of the adjustment groove.

[0011] Preferably, there is a gap between the upper surface of the upper zipper combing plate and the inner wall of the top inner side of the mounting frame plate, and a threaded cavity is provided in the middle of the hanging block, through which the first adjusting nut is connected to the hanging block.

[0012] Preferably, a positioning groove is provided in the middle of the front and rear sides of the lifting block, and a positioning protrusion is fixedly connected to the inner wall of the front and rear sides of the adjusting limiting groove. The lifting block is slidably connected to the adjusting limiting groove through the positioning groove and the positioning protrusion.

[0013] Preferably, one end of the bidirectional helical rod is fixedly connected to a synchronous pulley, the outer side of the synchronous pulley is provided with a synchronous belt, and the other end of the synchronous belt is connected to a synchronous pulley with a motor fixedly connected to one end.

[0014] Compared with the prior art, this utility model provides an automatic sewing production line for document bags and zippers, which has the following advantages: it makes it easy to adjust the distance between two sewing machines according to the size of the document bag to be made, facilitates the sewing of document bags of different sizes, facilitates the separate guidance and sorting of the mesh fabric and zipper to be sewn, and helps to prevent the zipper and mesh fabric from shifting and folding during the production process, which would affect the sewing effect.

[0015] The system comprises a motor, synchronous belt, bidirectional spiral rod, slider, guide cavity, moving limit cavity, and moving plate. During adjustment, the motor drives the bidirectional spiral rod, which is fixedly connected to one end of the synchronous wheel and the synchronous belt on the outside of the synchronous wheel, to rotate. The rotating bidirectional spiral rod pushes the corresponding slider through a clockwise spiral groove on one side of the spiral rod, which slides along the moving limit cavity towards the center of the sewing table under the constraint of the guide cavity. Simultaneously, the rotating bidirectional spiral rod pushes the corresponding slider through a counterclockwise spiral groove on the other side of the spiral rod, which also pushes the corresponding slider along the moving limit cavity towards the center of the sewing table under the constraint of the guide cavity. This causes a set of moving plates connected to the slider to slide synchronously towards the center of the sewing table, gradually reducing the distance between the sewing machines fixed on the sewing table. When the distance reaches the appropriate size for the material, the moving plates stop sliding towards the sewing table. This allows for easy adjustment of the distance between the two sewing machines according to the size of the document bag being made, facilitating the sewing of document bags of different sizes.

[0016] The system comprises a carding roller, a pushing block, an adjusting limit groove, a mounting frame plate, a positioning roller, a first adjusting nut, an upper zipper carding plate, a carding groove, a lower zipper guide groove, a second adjusting nut, a positioning clamping plate, and an adjusting groove. During positioning, before sewing, the material is laid on the upper surface of the sewing table, so that the front side of the bottom of the material is clamped onto the upper surface of the carding roller. Then, the pushing block is pushed, causing it to slide along the adjusting limit groove towards the edge of the material under the constraint of the positioning groove and positioning protrusion. When the pushing block slides above the edge of the material, it will simultaneously drive the mounting frame plate and positioning roller at the bottom of the pushing block to slide above the edge of the material. Rotating the first adjusting nut causes its bottom to move downwards along the threaded cavity of the pushing block, thereby pushing the first... The mounting frame plate connected to the bottom of the adjusting nut and the positioning roller rotatably connected to the lower inner side of the mounting frame plate move down synchronously and lock onto the edge of the material, clamping and positioning the edge of the material. Then, the upper zipper strip passes through the upper surface of the upper zipper combing plate, leaving a gap between it and the inner wall of the top inner side of the mounting frame plate. The upper zipper combing plate positions and combs the upper zipper. The lower zipper passes through the gap between the combing roller and the combing groove and the lower zipper guide groove in sequence. Rotating the second adjusting nut pushes the positioning plate connected to the bottom end to move down along the adjustment groove, thereby driving the multiple combing rollers rotatably connected at equal intervals on the positioning plate to the lower end of the combing groove. When the bottom of the combing roller moves down and locks onto the upper surface of the lower zipper, it pushes the bottom of the lower zipper to lock onto the inner wall of the bottom inner side of the combing groove, thus... Before clamping and positioning the lower zipper, lay the material on the upper surface of the sewing table, so that the front side of the bottom of the material is engaged with the upper surface of the carding roller. Then push the lifting block, causing it to slide along the adjusting limit groove towards the edge of the material under the constraint of the positioning groove and positioning protrusion. When the lifting block slides above the edge of the material, it will drive the mounting frame plate and positioning roller at the bottom of the lifting block to slide synchronously above the edge of the material. Rotate the first adjusting nut, and the bottom of the first adjusting nut will move downward along the threaded cavity towards the lower part of the lifting block, thereby pushing the mounting frame plate connected to the bottom of the first adjusting nut and the positioning roller rotatably connected to the lower inner side of the mounting frame plate to move down synchronously and engage with the edge of the material, clamping and positioning the edge of the material. Then, pass the upper zipper strip through. There is a gap between the upper surface of the upper zipper combing plate and the inner wall of the top inner side of the mounting frame plate. The upper zipper combing plate positions and combs the upper zipper. The lower zipper passes through the gap between the combing roller and the combing groove and the lower zipper guide groove in sequence. Rotating the second adjusting nut pushes the positioning plate connected to the bottom end to move down along the adjusting groove, thereby driving the multiple combing rollers that are equidistantly connected on the positioning plate to the lower end of the combing groove. When the bottom of the combing roller moves down and locks onto the upper surface of the lower zipper, it pushes the bottom of the lower zipper to lock onto the inner wall of the bottom inner side of the combing groove, thereby clamping and positioning the lower zipper. This facilitates the separate guidance and combing of the mesh fabric and zipper to be sewn, and helps to prevent the zipper and mesh fabric from shifting and folding during the production process, which would affect the sewing effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional cross-sectional structural diagram of the connection between the lifting block and the positioning roller of this utility model;

[0019] Figure 3 This utility model Figure 1 A three-dimensional structural diagram of section A in the middle;

[0020] Figure 4 This is a three-dimensional structural diagram of the connection between the movable plate and the guide column plate of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the connection between the movable plate and the bidirectional screw rod of this utility model.

[0022] 1. Sewing table; 2. Guide cavity; 3. Bidirectional spiral rod; 4. Slider; 5. Moving plate; 6. Sewing machine; 7. Moving limit cavity; 8. Combing groove; 9. Combing roller; 10. Positioning pressure plate; 11. Lifting block; 12. Adjusting limit groove; 13. First adjusting nut; 14. Mounting frame plate; 15. Positioning roller; 16. Upper zipper combing plate; 17. Adjusting groove; 18. Positioning clamping plate; 19. Second adjusting nut; 20. Lifting block; 21. Lifting limit cavity column; 22. Guide column plate; 23. Lower zipper guide groove; 24. Motor; 25. Synchronous belt. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] Example 1

[0025] Please refer to Figure 1 , Figure 4 and Figure 5As shown, an automated sewing production line for document bags and zippers includes a sewing table 1. A guide post plate 22 is fixedly connected to the front and rear sides of the lower surface of the sewing table 1. A guide cavity 2 is formed on the inner side of the guide post plate 22. A bidirectional spiral rod 3 is provided in the middle of the guide post plate 22. One end of the bidirectional spiral rod 3 is rotatably connected to one end of the guide cavity 2, and the other end of the bidirectional spiral rod 3 is through-connected to the other end of the guide cavity 2. A slider 4 is slidably connected to each of the left and right ends of the inner side of the guide cavity 2. A clockwise spiral groove is formed on one end of the outer surface of the bidirectional spiral rod 3, and a counterclockwise spiral groove is formed on the other end of the outer surface of the bidirectional spiral rod 3. The spiral groove and the two ends of the bidirectional spiral rod 3 are respectively connected to the bottom of a set of sliders 4. The cavity through which the bidirectional spiral rod 3 and slider 4 pass are connected by a rack inside. A movable plate 5 is fixedly connected to the top of slider 4. A sewing machine 6 is fixedly connected to the middle of the top of movable plate 5. A movable limiting cavity 7 is opened in the middle of the upper surface of sewing table 1. The upper outer side of movable plate 5 is slidably connected to the movable limiting cavity 7. A synchronous wheel is fixedly connected to one end of the bidirectional spiral rod 3. A synchronous belt 25 is provided on the outer side of the synchronous wheel. A motor 24 is fixedly connected to one end of the synchronous wheel connected to the other end of the synchronous belt 25.

[0026] In this embodiment, before sewing, the distance between the two sewing machines 6 is determined according to the size of the material. Then, the motor 24 drives the bidirectional spiral rod 3, which is fixedly connected to one end of the synchronous wheel and the synchronous belt 25 on the outside of the synchronous wheel, to rotate. The rotating bidirectional spiral rod 3 pushes the corresponding slider 4 through the clockwise spiral groove on one side of the outer wheel, which slides along the moving limit cavity 7 towards the middle of the sewing table 1 under the restriction of the guide cavity 2. At the same time, the rotating bidirectional spiral rod 3 pushes the corresponding slider 4 through the counterclockwise spiral groove on the other side of the outer wheel, which slides along the moving limit cavity 7 towards the middle of the sewing table 1 under the restriction of the guide cavity 2. This causes a set of moving plates 5 connected to the slider 4 to slide synchronously towards the middle of the sewing table 1, so that the distance between the sewing machines 6 fixed on the sewing table 1 gradually decreases. When the distance matches the size of the material, the moving plates 5 stop sliding towards the sewing table 1, which makes it easy to quickly adjust the distance between the two sewing machines 6 as needed.

[0027] Example 2

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a combing groove 8 is provided in the middle of the front side of the upper surface of the sewing table 1. Multiple combing rollers 9 are equidistantly distributed above the inner side of the combing groove 8. A positioning pressure plate 10 is provided in the middle of the upper side of the combing groove 8. A lifting block 20 is provided at each of the left and right ends of the positioning pressure plate 10. A lifting limit cylinder 21 is engaged with the outer side below the lifting block 20. The positioning pressure plate 10 and the lifting block 20 are detachably connected. A zipper guide groove 23 is provided on the front side of one end of the upper surface of the moving plate 5. An adjustment limit groove 12 is provided in the middle of the inner side of the positioning pressure plate 10. A hanging block 11 is slidably connected to each of the left and right ends of the inner side of the adjustment limit groove 12. A first adjusting nut 13 is rotatably connected to the middle of the inner side of the hanging block 11. A mounting frame plate 14 is rotatably connected to the bottom of the first adjusting nut 13. A positioning roller 15 is rotatably connected to the bottom of the inner side of the mounting frame plate 14. An upper zipper comb is fixedly connected to the middle of the upper side of the inner side of the mounting frame plate 14. The carding plate 16 and the carding groove 8 each have an adjusting groove 17 on their inner walls at both ends. A positioning plate 18 is slidably connected to the inner side of the adjusting groove 17. Multiple carding rollers 9 are equidistantly distributed at one end of the positioning plate 18 and are rotatably connected to that end. A second adjusting nut 19 is rotatably connected to the center of the top of the positioning plate 18. The second adjusting nut 19 is connected through the center of the upper inner side of the adjusting groove 17. There is a gap between the upper surface of the upper zipper carding plate 16 and the inner wall of the top inner side of the mounting frame plate 14. A threaded cavity is formed in the center of the hanging block 11. A first adjusting nut 13 is connected through the threaded cavity to the hanging block 11. A positioning groove is formed in the center of each of the front and rear sides of the hanging block 11. A positioning protrusion is fixedly connected to the inner walls of the front and rear sides of the adjusting limit groove 12. The hanging block 11 is slidably connected to the adjusting limit groove 12 through the positioning groove and the positioning protrusion.

[0029] In this embodiment, before sewing, the material is laid on the upper surface of the sewing table 1, so that the front side of the bottom of the material is engaged with the upper surface of the combing roller 9. Then, the lifting block 11 is pushed, so that the lifting block 11 slides along the adjusting limiting groove 12 towards the edge of the material under the restriction of the positioning groove and the positioning protrusion. When the lifting block 11 slides above the edge of the material, it will drive the mounting frame plate 14 and the positioning roller 15 at the bottom of the lifting block 11 to slide synchronously above the edge of the material. The first adjusting nut 13 is rotated, and the bottom of the first adjusting nut 13 will move downward along the threaded cavity towards the lifting block 11, thereby pushing the mounting frame plate 14 connected to the bottom of the first adjusting nut 13 and the positioning roller 15 rotatably connected to the lower inner side of the mounting frame plate 14 to move down synchronously and engage at the edge of the material, thereby clamping and positioning the edge of the material. Then, the upper zipper strip passes through the upper surface of the upper zipper combing plate 16 and the inner wall of the top inner side of the mounting frame plate 14 with a gap. The upper zipper combing plate 16 positions and combs the upper zipper. The lower zipper passes through the gap between the combing roller 9 and the combing groove 8 and the lower zipper guide groove 23 in sequence. The second adjusting nut 19 is rotated to push the positioning plate 18 connected at the bottom to move down along the adjustment groove 17, thereby driving the multiple combing rollers 9 connected at equal intervals on the positioning plate 18 to the lower end of the combing groove 8. When the bottom of the combing roller 9 moves down and locks onto the upper surface of the lower zipper, it pushes the bottom of the lower zipper to lock onto the inner wall of the bottom inner side of the combing groove 8, thereby clamping and positioning the lower zipper. When the zipper is pulled to one end, the combing roller 9 will roll to comb and pull the lower zipper to prevent it from curling.

[0030] When repairing or replacing the positioning plate 10, rotate the nut to separate the nut from the connection position between the positioning plate 10 and the lifting block 20. Then, lift the positioning plate 10 upwards and flat to remove it from the lifting block 20, so that the positioning plate 10 can be disassembled and repaired.

[0031] The working principle and usage procedure of this device are as follows: During use, the motor 24 drives the bidirectional spiral rod 3, which is fixedly connected to one end of the synchronous wheel and has a synchronous belt 25 on its outer side, to rotate via the synchronous wheel. The rotating bidirectional spiral rod 3 pushes the corresponding slider 4 through a clockwise spiral groove on its outer end, causing it to slide along the moving limiting cavity 7 towards the center of the sewing table 1 under the constraint of the guide cavity 2. Simultaneously, the rotating bidirectional spiral rod 3 pushes the corresponding slider 4 through a counterclockwise spiral groove on its other outer end, causing it to slide along the moving limiting cavity 7 towards the center of the sewing table 1 under the constraint of the guide cavity 2. The sliding plate 1 slides towards the center, causing a set of movable plates 5 connected to the slider 4 to slide synchronously towards the center of the sewing table 1. This gradually reduces the distance between the sewing machines 6 fixed on the sewing table 1, until the distance matches the material size. At this point, the movable plates 5 stop sliding towards the sewing table 1, and the material is laid on the upper surface of the sewing table 1. The front side of the bottom of the material is then engaged with the upper surface of the combing roller 9. Then, the lifting block 11 is pushed, causing it to slide along the adjusting limit groove 12 towards the edge of the material under the constraint of the positioning groove and the positioning protrusion. When the lifting block 11 slides to the edge of the material... When the material is above the edge, the mounting frame plate 14 and positioning roller 15 at the bottom of the lifting block 11 will slide synchronously to the top of the material edge. Rotating the first adjusting nut 13 will cause the bottom of the first adjusting nut 13 to move downward along the threaded cavity of the lifting block 11, thereby pushing the mounting frame plate 14 connected to the bottom of the first adjusting nut 13 and the positioning roller 15 rotatably connected to the lower inner side of the mounting frame plate 14 to move downward synchronously and lock onto the material edge, thereby clamping and positioning the material edge. Then, the upper zipper strip passes through the upper surface of the upper zipper comb plate 16 and there is a gap between it and the inner wall of the top inner side of the mounting frame plate 14. The upper zipper is positioned and combed by the upper zipper combing plate 16. The lower zipper is then passed through the gap between the combing roller 9 and the combing groove 8 and the lower zipper guide groove 23. The second adjusting nut 19 is rotated to push the positioning plate 18 connected at the bottom to move down along the adjusting groove 17, thereby driving the multiple combing rollers 9 that are equidistantly connected on the positioning plate 18 to the lower end of the combing groove 8. When the bottom of the combing roller 9 moves down and locks onto the upper surface of the lower zipper, it pushes the bottom of the lower zipper to lock onto the inner wall of the bottom of the combing groove 8, thereby clamping and positioning the lower zipper. At this point, the document bag and zipper can be sewn together.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automated sewing production line for document bags and zippers, comprising a sewing table (1), characterized in that: A guide post plate (22) is fixedly connected to the front and rear sides of the lower surface of the sewing table (1). A guide cavity (2) is opened on the inner side of the guide post plate (22). A bidirectional spiral rod (3) is provided in the middle of the guide post plate (22). One end of the bidirectional spiral rod (3) is rotatably connected to one end of the guide cavity (2). The other end of the bidirectional spiral rod (3) is connected through to the other end of the guide cavity (2). A slider (4) is slidably connected to the left and right ends of the inner side of the guide cavity (2). A clockwise spiral groove is opened on one end of the outer surface of the bidirectional spiral rod (3). A counterclockwise spiral groove is opened on the other end of the outer surface of the bidirectional spiral rod (3). The left and right ends of the bidirectional spiral rod (3) are respectively connected through to the bottom of a set of sliders (4). The cavity through which the bidirectional spiral rod (3) and the slider (4) pass is connected by a rack provided inside. A moving plate (5) is fixedly connected to the top of the slider (4). A sewing machine (6) is fixedly connected to the middle of the top of the moving plate (5).

2. The automated sewing production line for document bags and zippers according to claim 1, characterized in that: The upper surface of the suture table (1) is provided with a movable limiting cavity (7), and the upper part of the outer side of the movable plate (5) is slidably connected to the movable limiting cavity (7).

3. The automated sewing production line for document bags and zippers according to claim 1, characterized in that: A combing groove (8) is provided in the middle of the front side of the upper surface of the sewing table (1). Multiple combing rollers (9) are evenly distributed above the inner side of the combing groove (8). A positioning pressure plate (10) is provided in the middle above the combing groove (8). A lifting block (20) is provided at each of the left and right ends of the positioning pressure plate (10). A lifting limit cavity column (21) is engaged on the outer side below the lifting block (20). The positioning pressure plate (10) and the lifting block (20) are detachably connected. A zipper guide groove (23) is provided on the front side of one end of the upper surface of the moving plate (5).

4. The automated sewing production line for document bags and zippers according to claim 3, characterized in that: An adjustment limiting groove (12) is provided in the middle of the inner side of the positioning pressure plate (10). A hanging block (11) is slidably connected to each of the left and right ends of the inner side of the adjustment limiting groove (12). A first adjusting nut (13) is rotatably connected to the middle of the inner side of the hanging block (11). A mounting frame plate (14) is rotatably connected to the bottom of the first adjusting nut (13). A positioning roller (15) is rotatably connected to the bottom of the inner side of the mounting frame plate (14). An upper zipper comb plate (16) is fixedly connected to the middle of the upper part of the inner side of the mounting frame plate (14).

5. An automated sewing production line for document bags and zippers according to claim 3, characterized in that: Each of the left and right ends of the combing groove (8) has an adjustment groove (17) on its inner wall. The inner side of the adjustment groove (17) is slidably connected to a positioning plate (18). Multiple combing rollers (9) are equidistantly distributed at one end of the positioning plate (18) and are rotatably connected to one end of the positioning plate (18). The middle of the top of the positioning plate (18) is rotatably connected to a second adjusting nut (19). The second adjusting nut (19) is connected through to the middle of the upper inner side of the adjustment groove (17).

6. An automated sewing production line for document bags and zippers according to claim 4, characterized in that: There is a gap between the upper surface of the upper zipper comb plate (16) and the inner wall of the inner top of the mounting frame plate (14). The middle part of the hanging block (11) is provided with a threaded cavity, and the first adjusting nut (13) is connected to the hanging block (11) through the threaded cavity.

7. An automated sewing production line for document bags and zippers according to claim 4, characterized in that: The lifting block (11) has a positioning groove in the middle of the front and rear sides. The inner walls of the front and rear sides of the adjustment limiting groove (12) are fixedly connected to a positioning protrusion. The lifting block (11) is slidably connected to the adjustment limiting groove (12) through the positioning groove and the positioning protrusion.

8. An automated sewing production line for document bags and zippers according to claim 1, characterized in that: One end of the bidirectional helical rod (3) is fixedly connected to a synchronous pulley, and a synchronous belt (25) is provided on the outer side of the synchronous pulley. The other end of the synchronous belt (25) is connected to a synchronous pulley with a motor (24) fixedly connected to it.

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