Automatic bag opening machine and folding knife structure thereof

Abstract

The utility model discloses an automatic bag opening machine and its folding knife structure, including bag opening machine general frame, the movable mechanism of installing before and after all around of total machine frame, the fixed mechanism for fixing the fabric and zipper, folding knife mechanism, sewing machine, at least two material plate for placing fabric and recycling, the circulating feeding mechanism for sending material plate and the laser cutting mechanism for cutting fabric, movable mechanism drives fixed mechanism and folding knife mechanism before and after all around activity, be equipped with the folding bag adapter part of movable opening or closing on fixed mechanism, when folding bag adapter part opens, folding knife mechanism drops and extends into folding bag adapter part, and folding knife mechanism activity and folding bag adapter each other inlaying fold and cut open the fabric and form the pocket, and folding knife mechanism stroke is longer, can more completely push the fabric and fold, and folding knife mechanism can be longitudinal in folding bag adapter activity, and after completing folding bag, folding knife mechanism slightly drops and retreats knife again, avoids taking out the fabric of completing folding when retreating knife.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to an automatic bag opener and its folding knife structure. Background Technology

[0002] In garment manufacturing, pocket-opening machines are essential auxiliary processing machinery, mainly used to create pockets in specific locations on garments. These pockets are for users to place small items such as mobile phones, wallets, and keys. The processing of the pocket opening requires cutting, folding, shaping, and sewing the garment fabric at the location where the pocket will be produced.

[0003] In the process of folding a bag, a folding blade is needed to fold and cut the fabric to form the bag lip. The step of retracting the blade after folding is essential. However, in existing pocket machines, the folding blade may pull out the folded fabric during the retraction process, resulting in a poor user experience. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an automatic bag opening machine and its folding knife structure. To solve the above-mentioned technical problems, this utility model provides the following technical solution.

[0005] An automatic bag opening machine and its folding knife structure include a main frame for the bag opening machine, on which a moving mechanism, a fixing mechanism, a folding knife mechanism, a circulating feeding mechanism, a sewing machine, at least two material plates for placing fabric and using them repeatedly, and a laser cutting mechanism for cutting the fabric are mounted. The moving mechanism is mounted on the main frame and can move back and forth and left and right. The folding knife mechanism and the fixing mechanism are mounted on the moving mechanism and the moving mechanism drives the folding knife mechanism and the fixing mechanism to move back and forth and left and right. The fixing mechanism is used to fix the fabric and zipper, and is mounted on the moving mechanism in a height-adjustable manner. The fixing mechanism can move to remove the material plate containing the fabric. The fixing mechanism is provided with a folding bag adapter that can be opened or closed. When the folding bag adapter is closed, it forms a seam groove. The folding bag adapter and the folding knife mechanism are in the same longitudinal direction. The folding knife mechanism is mounted on the movable mechanism and located directly above the fixed mechanism. When the folding bag adapter is opened, the folding knife mechanism descends and extends into the folding bag adapter, and the folding knife mechanism moves to fold and cut the fabric to form a pocket.

[0006] Furthermore, the folding knife mechanism includes a fixed plate, a drive motor mounted on one side of the fixed plate, a support movably mounted on the other side of the fixed plate, and a movable front folding knife assembly, a rear folding knife assembly, and side folding knife assemblies mounted on the lower end of the support. The drive motor passes through the fixed plate and drives the support to rise and fall. The front folding knife assembly, the rear folding knife assembly, and the side folding knife assemblies rise and fall synchronously with the support. The front folding knife assembly is symmetrical to the rear folding knife assembly, and the two side folding knife assemblies are symmetrically arranged.

[0007] Furthermore, the front folding knife assembly, the rear folding knife assembly, and the side folding knife assembly fold the bag independently by moving laterally through cylinders and guide rails mounted on their respective supports.

[0008] Furthermore, both the front folding knife assembly and the rear folding knife assembly include a slider that slides on a guide rail, a connecting plate mounted on the slider, a cylinder mounted on the connecting plate, and a folding knife holder that can move up and down at the lower end of the connecting plate. The front folding knife and the rear folding knife are respectively mounted on the bottom of the folding knife holder of the front folding knife assembly and the rear folding knife. The lateral and longitudinal movements of the front folding knife and the rear folding knife are realized by the extension and retraction of two cylinders in different directions.

[0009] Furthermore, the folding bag adapter includes a detachable front baffle and a rear baffle, a pressure plate located at the lower end of the front baffle and the rear baffle for limiting the fabric, a first pull rod and a second pull rod respectively connected to both sides of the front baffle and the rear baffle, and a cylinder mounted on a fixing mechanism to drive the first pull rod and the second pull rod to move. The first pull rod and the second pull rod respectively drive the front baffle and the rear baffle to move to expose or close the pressure plate. The seam groove is partially located on the front baffle and partially on the rear baffle. When the front baffle and the rear baffle are closed, they form a seam groove. The pressure plate is provided with a folding bag groove. When folding the bag, the front baffle and the rear baffle move laterally to both sides to expose the folding bag groove on the pressure plate. The folding knife mechanism descends and passes through the seam groove and the folding bag groove in sequence, folds the cut fabric to the lower end of the pressure plate, descends first, and then retracts the knife.

[0010] Furthermore, the front and rear folding blades are provided with serrated folding pockets at their ends, which push the fabric to fold. The folding pocket grooves are provided with fitting parts on both sides to accommodate the folding pockets. When the front and rear folding blades move laterally, the folding pockets and fitting parts fit together, and the folding pockets can move longitudinally on the fitting parts.

[0011] Furthermore, the fixing mechanism includes a horizontal plate and a vertical plate mounted on the moving mechanism. The horizontal plate and the vertical plate are connected by a cylinder, and the cylinder extends and retracts to drive the horizontal plate to rise and fall.

[0012] Furthermore, the circulating feeding mechanism includes a transverse cylinder and guide rail, a longitudinal cylinder and guide rail, a support base, and a clamp mounted on the support base for gripping the material plate. The transverse cylinder drives the support base to move left and right, and the longitudinal cylinder drives the support base to move back and forth.

[0013] Furthermore, a positioning mechanism is set on the main frame. The positioning mechanism includes a rotary cylinder, a mounting plate connected to the upper end of the rotary cylinder, a cylinder mounted on the end of the mounting plate, and a baffle plate at the end of the mounting cylinder. The rotary cylinder is located on one side of the material plate. By rotating, it drives the baffle plate to move to directly above the material plate. Then, by extending and retracting the cylinder, it drives the baffle plate to contact the material plate.

[0014] Furthermore, the fixing mechanism is equipped with a cylinder clamp, and the extension and retraction of the cylinder drives the cylinder clamp to move for clamping or releasing the fabric.

[0015] Compared with the prior art, the beneficial effects that this utility model can achieve are: The fixing mechanism of this utility model is provided with a folding bag adapter that can be opened or closed. When the folding bag adapter is closed, it forms a seam groove. The folding bag adapter and the folding knife mechanism are in the same longitudinal direction. The folding knife mechanism is mounted on the moving mechanism and located directly above the fixing mechanism. When the folding bag adapter is opened, the folding knife mechanism descends and extends into the folding bag adapter. The folding knife mechanism moves laterally to push the fabric to fold until it fits into the folding bag adapter, thus completing the fabric folding. During the folding process, the folding knife mechanism can be embedded into the folding bag adapter, resulting in a longer stroke and a more complete fabric folding. Furthermore, the folding knife mechanism can move longitudinally within the folding bag adapter. After completing the folding, the folding knife mechanism descends slightly before retracting, preventing the folded fabric from being pulled out during retraction and ensuring good production quality. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 The fixing mechanism of this utility model is three-dimensional. Figure 1 .

[0018] Figure 3 The fixing mechanism of this utility model is three-dimensional. Figure 2 .

[0019] Figure 4 This is a perspective view of the folding knife mechanism of this utility model.

[0020] Figure 5 This is a perspective view of the positioning mechanism of this utility model.

[0021] Figure 6 This is a three-dimensional view of the circulating feeding system of this utility model.

[0022] Reference numerals: 1. Main frame; 2. Moving mechanism; 3. Fixing mechanism; 4. Folding knife mechanism; 5. Circulating feeding mechanism; 6. Sewing machine; 7. Material plate; 8. Laser cutting mechanism; 9. Folding bag adapter; 10. Seam groove; 11. Fixing plate; 12. Drive motor; 13. Support; 14. Front folding knife assembly; 15. Rear folding knife assembly; 16. Side folding knife assembly; 17. Slider; 18. Connecting plate; 9. Folding knife holder; 20. Front folding knife; 21. Rear folding knife; 22. Front baffle; 23. Rear baffle; 24. Pressure plate; 25. First pull rod; 26. Second pull rod; 27. Folding bag groove; 28. Folding bag part; 29. ​​Fitting part; 30. Horizontal plate; 31. Vertical plate; 32. Support base; 33. Clamp; 34. Positioning mechanism; 35. Rotary cylinder; 36. Mounting plate; 37. Material baffle; 38. Cylinder clamp. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-6As shown, an automatic bag opening machine and its folding knife structure include a main frame 1. The main frame 1 is equipped with a moving mechanism 2, a fixing mechanism 3, a folding knife mechanism 4, a circulating feeding mechanism 5, a sewing machine 6, at least two material plates 7 for placing fabric and for repeated use, and a laser cutting mechanism 8 for cutting the fabric. The moving mechanism 2 is mounted on the main frame 1, movable forward and backward and left and right, via longitudinal cylinders and guide rails, and transverse cylinders and guide rails. The folding knife mechanism 4 and the fixing mechanism 3 are mounted on the moving mechanism 2, and the moving mechanism 2 drives the folding knife mechanism 4 and the fixing mechanism 3 to move forward and backward and left and right. The fixing mechanism 3 is used to fix the fabric and zipper, and is mounted on the moving mechanism 2 in a height-adjustable manner. The fixing mechanism 3 moves to remove the material plate 7 containing the fabric and then moves to the laser cutting 8 to cut the pocket. After manually inserting the zipper, the fixing mechanism 3 limits the zipper and fabric. The fixing mechanism 3 is provided with a movable, openable or closed folding bag adapter 9, which forms a seam groove 10 when closed. The folding pocket adapter 9 and the folding knife mechanism 4 are in the same longitudinal direction. The folding knife mechanism 4 is mounted on the moving mechanism 2 and located directly above the fixed mechanism 3. When the folding pocket adapter 9 is opened, the folding knife mechanism 4 descends and extends into the folding pocket adapter 9. The folding knife mechanism 4 moves laterally to push the fabric fold until it fits into the folding pocket adapter 9, completing the fabric folding. During the folding process, the folding knife mechanism 4 can be inserted into the folding pocket adapter 9, resulting in a longer stroke and more complete fabric folding. The folding knife mechanism 4 can also move longitudinally within the folding pocket adapter 9. After completing the folding, the folding knife mechanism 4 slightly descends and then retracts to avoid pulling out the folded fabric during retraction, ensuring good production quality. After the folding knife mechanism 4 retracts, the folding pocket adapter 9 closes to form a seam groove 10. The moving mechanism 2 moves the fixed mechanism 3 to below the sewing machine 6, and the sewing machine 6 sews the zipper and pocket along the contour of the seam groove 10.

[0025] The folding knife mechanism 4 includes a fixed plate 11, a drive motor 12 mounted on one side of the fixed plate 11, a support 13 movably mounted on the other side of the fixed plate 11, and a movable front folding knife assembly 14, a rear folding knife assembly 15, and side folding knife assemblies 16 located on both sides, mounted on the lower end of the support 13. The drive motor 12 passes through the fixed plate 11 and drives the support 13 to rise and fall. The front folding knife assembly 14, the rear folding knife assembly 15, and the side folding knife assembly 16 rise and fall synchronously with the support 13.

[0026] The laser cutting mechanism 8 cuts the fabric into two Y-shaped sections with their tails connected by a laser tube. The front folding blade assembly 14 is symmetrical to the rear folding blade assembly 15, and the two move in opposite directions to open or close to the sides, which is used to fold the straight cut to the sides. The two side folding blade assemblies 16 are symmetrically arranged and are used to fold the triangular cuts on both sides, stacking the two sides of the fabric into a double layer, making the sewn more secure and the pocket less likely to tear off.

[0027] The front folding knife assembly 14, the rear folding knife assembly 15, and the side folding knife assembly 16 fold the bag independently by moving laterally through cylinders and guide rails mounted on the support 13. When facing a small pocket, the front folding knife assembly 14 and the rear folding knife assembly 15 may not be able to simultaneously extend into the fabric cut to fold the bag. Therefore, the front folding knife assembly 14, the rear folding knife assembly 15, and the side folding knife assembly 16 can take turns entering the pocket cut to accommodate pockets of different sizes.

[0028] Both the front folding blade assembly 14 and the rear folding blade assembly 15 include a slider 17 sliding on a guide rail, a connecting plate 18 mounted on the slider 17, a cylinder mounted on the connecting plate 18, and a folding blade holder 19 movable up and down at the lower end of the connecting plate 18. A front folding blade 20 and a rear folding blade 21 are respectively mounted on the bottom of the folding blade holder 19 of the front folding blade assembly 14 and the rear folding blade 15. The front folding blade 20 and the rear folding blade 21 move and engage with the folding bag adapter 9 to fold and cut the fabric to form a bag lip. The cylinder on the support 13 extends and retracts, causing the front folding blade 20 and the rear folding blade 21 to move back and forth, while the cylinder on the connecting plate 18 extends and retracts, causing the front folding blade 20 and the rear folding blade 21 to move up and down.

[0029] The folding bag adapter 9 includes a detachable and replaceable front baffle 22 and a rear baffle 23, a pressure plate 24 located at the lower end of the front baffle 22 and the rear baffle 23 for limiting the fabric, a first pull rod 25 and a second pull rod 26 respectively connected to both sides of the front baffle 22 and the rear baffle 23, and a cylinder mounted on the fixing mechanism 3 to drive the first pull rod 25 and the second pull rod 26 to move. The front baffle 22 and the rear baffle 23 open or close to expose or hide the pressure plate 24. The fabric is clamped between the pressure plate 24 and the material plate 7. The folding knife mechanism 4 can only descend and cooperate with the pressure plate 24 to fold the bag after the pressure plate 24 is exposed. The front baffle 22 and the rear baffle 23 are fixed between the first pull rod 25 and the second pull rod 26 on both sides by screws. Different sizes of front baffle 22 and rear baffle 23 can be replaced to meet the production needs of different sized bags, which has strong compatibility and is also convenient to replace.

[0030] The seam groove 10 is partially located on the front baffle 22 and partially on the rear baffle 23. When the front baffle 22 and the rear baffle 23 are closed, they abut against each other and form the seam groove 10. The pressure plate 24 is provided with a folding pocket groove 27. When folding the pocket, the front baffle 22 and the rear baffle 23 move laterally to both sides to expose the folding pocket groove 27 on the pressure plate 24. The folding knife mechanism 4 descends and passes through the seam groove 10 and the folding pocket groove 27 in sequence, folds the cut fabric to the lower end of the pressure plate 24, descends first and then retracts the knife. In this design, during the folding process, the front folding blade 20 and the rear folding blade 21 are initially in an open state, descending through the seam groove 10 and the pocket folding groove 27 and contacting the fabric. Subsequently, the front folding blade 20 and the rear folding blade 21 gradually move closer together to flatten the cut fabric. After a slight descent, the front folding blade 20 and the rear folding blade 21 open and move laterally to one side, pushing the fabric to fold under the pressure plate 24. Finally, the front folding blade 20 and the rear folding blade 21 descend slightly, move closer together, and rise to complete the retraction. During the retraction process, the slight descent allows the front folding blade 20 and the rear folding blade 21 to detach from the fabric first, avoiding the direct lateral movement of the retraction blades from bringing out the folded fabric.

[0031] The front folding blade 20 and the rear folding blade 21 are provided with serrated folding pockets 28 at their ends. The folding pockets 28 push the fabric to fold. The folding pocket groove 27 is provided with fitting parts 29 on both sides that are adapted to the folding pockets 28. The two are serrated and can fit together. When the front folding blade 20 and the rear folding blade 21 move laterally, the folding pockets 28 and the fitting parts 29 fit together. The lateral movement is longer, which can push the fabric to fold more completely. In addition, the folding pockets 28 can move longitudinally on the fitting parts 29. The folding pockets 28 can rise and retract without completely disengaging.

[0032] The fixing mechanism 3 includes a horizontal plate 30 and a vertical plate 31 mounted on the moving mechanism 2. The horizontal plate 30 and the vertical plate 31 are connected by a cylinder. The cylinder extends and retracts, causing the horizontal plate 30 to rise and fall. The moving mechanism 2 moves the fixing mechanism 3 directly above the material plate 7. After the cylinder extends and retracts, it causes the horizontal plate 30 to fall and remove the material plate 7. Then, the cylinder extends and retracts, causing the fixing mechanism 2, which has completed material removal, to reset. The folding pocket button fixing mechanism 3 is then moved below the sewing machine 6 to sew the zipper and pocket. After sewing is completed, the fixing mechanism 3 resets and the cylinder rises. A zipper can then be placed on the fixing mechanism 3, and the material plate 7 falls off.

[0033] The circulating feeding mechanism 5 includes a transverse cylinder and guide rail, a longitudinal cylinder and guide rail, a support base 32, and a clamp 33 mounted on the support base 32 for gripping the material plate 7. The transverse cylinder drives the support base 32 to move left and right, and the longitudinal cylinder drives the support base 32 to move back and forth. After the material plate 7 on the fixing mechanism 3 is sewn, the circulating feeding mechanism 5 moves to the rear of the fixing mechanism 3 and removes the material plate 7 through the clamp 33. After the fixing mechanism 3 removes the material plate 7 that has been unloaded from the main frame 1, the circulating feeding mechanism 5 sends the material plate 7 back to the worktable of the main frame 1.

[0034] The main frame 1 is equipped with a positioning mechanism 34, which includes a rotary cylinder 35, a mounting plate 36 connected to the upper end of the rotary cylinder 35, a cylinder mounted on the end of the mounting plate 36, and a baffle plate 37 at the end of the mounting cylinder. The rotary cylinder 35 is located on one side of the material plate 7. By rotating, it drives the baffle plate 37 to move directly above the material plate 8. Then, by extending and retracting the cylinder, it drives the baffle plate 37 to contact the material plate 7. The operator can put the fabric in according to the contour of the baffle plate 37, which increases the accuracy of the feeding. After the feeding is completed, the positioning mechanism 34 retracts through the rotary cylinder 35.

[0035] The fixing mechanism 3 is equipped with a cylinder clamp 38. The cylinder extends and retracts, causing the cylinder clamp 38 to move to clamp or release the fabric. The pressure plate 24 presses against the fabric, and the cylinder frame 38 further clamps the fabric to prevent the ends of the fabric from sagging.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic bag-opening machine and its folding knife structure, comprising a main frame for the bag-opening machine, characterized in that, The main frame is equipped with a moving mechanism, a fixing mechanism, a folding knife mechanism, a circulating feeding mechanism, a sewing machine, at least two material plates for placing and recycling fabric, and a laser cutting mechanism for cutting the fabric. The moving mechanism is mounted on the main frame and can move back and forth and left and right. The folding knife mechanism and the fixing mechanism are mounted on the moving mechanism and the moving mechanism drives the folding knife mechanism and the fixing mechanism to move back and forth and left and right. The fixing mechanism is used to fix the fabric and zipper, and is mounted on the moving mechanism in a height-adjustable manner. The fixing mechanism can move to remove the material plate containing the fabric. The fixing mechanism is provided with a folding bag adapter that can be opened or closed. When the folding bag adapter is closed, it forms a seam groove. The folding bag adapter and the folding knife mechanism are in the same longitudinal direction. The folding knife mechanism is mounted on the movable mechanism and located directly above the fixed mechanism. When the folding bag adapter is opened, the folding knife mechanism descends and extends into the folding bag adapter. The folding knife mechanism moves and interlocks with the folding bag adapter to fold and cut the fabric to form a pocket. The folding knife mechanism can move longitudinally within the folding bag adapter.

2. The automatic bag opening machine and its folding knife structure according to claim 1, characterized in that, The folding knife mechanism includes a fixed plate, a drive motor mounted on one side of the fixed plate, a support movably mounted on the other side of the fixed plate, and a movable front folding knife assembly, a rear folding knife assembly, and side folding knife assemblies mounted on the lower end of the support. The drive motor passes through the fixed plate and drives the support to rise and fall. The front folding knife assembly, the rear folding knife assembly, and the side folding knife assemblies rise and fall synchronously with the support. The front folding knife assembly is symmetrical to the rear folding knife assembly, and the two side folding knife assemblies are symmetrically arranged.

3. The automatic bag opening machine and its folding knife structure according to claim 2, characterized in that, The front folding knife assembly, rear folding knife assembly, and side folding knife assembly fold the bag independently by moving laterally through cylinders and guide rails mounted on their respective supports.

4. The automatic bag opening machine and its folding knife structure according to claim 2, characterized in that, Both the front folding knife assembly and the rear folding knife assembly include a slider that slides on a guide rail, a connecting plate mounted on the slider, a cylinder mounted on the connecting plate, and a folding knife holder that can move up and down at the lower end of the connecting plate. The front folding knife and the rear folding knife are respectively mounted on the bottom of the folding knife holder of the front folding knife assembly and the rear folding knife. The lateral and longitudinal movements of the front folding knife and the rear folding knife are realized by the extension and retraction of two cylinders in different directions.

5. The automatic bag opening machine and its folding knife structure according to claim 4, characterized in that, The folding bag adapter includes a detachable front baffle and a rear baffle, a pressure plate located at the lower end of the front baffle and the rear baffle for limiting the fabric, a first pull rod and a second pull rod respectively connected to both sides of the front baffle and the rear baffle, and a cylinder mounted on a fixing mechanism to drive the first pull rod and the second pull rod to move. The first pull rod and the second pull rod respectively drive the front baffle and the rear baffle to move to expose or close the pressure plate. The seam groove is partially located on the front baffle and partially on the rear baffle. When the front baffle and the rear baffle are closed, they form a seam groove. The pressure plate is provided with a folding bag groove. When folding the bag, the front baffle and the rear baffle move laterally to both sides to expose the folding bag groove on the pressure plate. The folding knife mechanism descends and passes through the seam groove and the folding bag groove in sequence, folds the cut fabric to the lower end of the pressure plate, descends first, and then retracts the knife.

6. An automatic bag opening machine and its folding knife structure according to claim 5, characterized in that, The front and rear folding blades are provided with serrated folding pockets at their ends. The folding pockets push the fabric to fold. The sides of the folding pocket groove are provided with fitting parts adapted to the folding pockets. When the front and rear folding blades move laterally, the folding pockets and the fitting parts fit together. The folding pockets can move longitudinally on the fitting parts.

7. The automatic bag opening machine and its folding knife structure according to claim 1, characterized in that, The fixing mechanism includes a horizontal plate and a vertical plate mounted on the moving mechanism. The horizontal plate and the vertical plate are connected by a cylinder, and the cylinder extends and retracts to drive the horizontal plate to rise and fall.

8. The automatic bag opening machine and its folding knife structure according to claim 1, characterized in that, The circulating feeding mechanism includes a horizontal cylinder and guide rail, a vertical cylinder and guide rail, a support base, and a clamp mounted on the support base for gripping the material plate. The horizontal cylinder drives the support base to move left and right, and the vertical cylinder drives the support base to move back and forth.

9. An automatic bag-opening machine and its folding knife structure according to claim 1, characterized in that, The main frame is equipped with a positioning mechanism, which includes a rotary cylinder, a mounting plate connected to the upper end of the rotary cylinder, a cylinder mounted on the end of the mounting plate, and a baffle plate at the end of the mounting cylinder. The rotary cylinder is located on one side of the material plate. By rotating, it drives the baffle plate to move to the top of the material plate, and then the cylinder extends and retracts to drive the baffle plate to contact the material plate.

10. An automatic bag-opening machine and its folding knife structure according to claim 1, characterized in that, The fixing mechanism is equipped with a cylinder clamp, and the extension and retraction of the cylinder drives the cylinder clamp to move to clamp or release the fabric.

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