Automatic bag opening machine for folding double-layer fabric

Abstract

The utility model discloses an automatic pocket opening machine for folding double-layer fabric, which comprises a working table, a sewing machine and a laser cutting component used for cutting the fabric are mounted on the working table. The moving mechanism can move forwards, backwards, leftwards and rightwards, the material plates are used for feeding fabric circularly, the fixing mechanism is connected to the moving mechanism, the folding knife mechanism is used for folding a notch of the fabric to form a bag lip, and a fabric limiting mechanism is arranged at the lower end of the fixing mechanism; triangular notches are formed in the two ends of fabric through the laser cutting assembly, the triangular notches are folded inwards through the folding knife mechanism to form multiple layers of fabric, and after the fabric limiting mechanism clamps the folded fabric, the fixing mechanism drives a zipper and the fabric to move to the sewing machine to complete sewing of a pocket. The original single-layer fabric is changed into the double-layer fabric, the sewing strength of the double-layer fabric and the zipper is higher, and the zipper is not easy to be pulled down from the pocket.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to an automatic bag opening machine for folding double-layer fabric. Background Technology

[0002] In garment manufacturing, pocket opening machines are essential auxiliary processing machinery, mainly used to create pockets in specific locations on garments, allowing users to place small items such as mobile phones, wallets, and keys. The processing of the pocket opening involves cutting, folding, shaping, and sewing the pocket opening area. Cutting involves cutting the pocket opening into the predetermined shape, folding involves folding the cut pocket opening inward to form a folded edge, shaping involves placing the pocket lip on the folded edge, and finally, sewing.

[0003] Some pockets on the market have zippers, while others do not. For pockets with zippers, the existing zippers are directly sewn onto the fabric by a sewing machine. The zipper is usually only sewn onto a single layer of fabric, so the zipper may not be secure enough and may come off. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides an automatic bag-opening machine for folding double-layer fabrics. To solve the above-mentioned technical problems, this utility model provides the following technical solution.

[0005] An automatic pocket-opening machine for folding double-layer fabric includes a worktable on which a sewing machine and a laser cutting assembly for cutting pockets are mounted. It also includes a moving mechanism, at least two reusable material plates, a fixing mechanism, a folding knife mechanism, and a recirculating feeding mechanism.

[0006] The moving mechanism is mounted on the worktable and can move back, forth, left, and right via a cylinder.

[0007] The material plate is used to place zippers or fabrics. One material plate is placed on the workbench and located on one side of the fixing mechanism, and the other material plate is installed on the circulating feeding mechanism.

[0008] The fixing mechanism is used to fix the fabric and zipper, and is vertically connected to the moving mechanism. The moving mechanism moves the material board to the sewing machine for work.

[0009] The folding knife mechanism is mounted on the moving mechanism and can move back and forth and up and down via a cylinder. It is used to fold the cut fabric to form a pocket.

[0010] The circulating feeding mechanism is used to feed material plates onto the worktable or remove material plates that have been completed by extending and retracting a cylinder.

[0011] The lower end of the fixing mechanism is provided with a fabric limiting mechanism. The two ends of the fabric are formed into triangular cuts by laser cutting components. The triangular cuts are folded inward by a folding knife mechanism to form multiple layers of fabric. After the fabric limiting mechanism clamps the folded fabric, the zipper and fabric are sewn together by a sewing machine.

[0012] Furthermore, the fixing mechanism is provided with a liftable surface stitching assembly, which is detachably installed on the fixing mechanism. The zipper is fixed inside the surface stitching assembly, and the fabric is clamped between the material plate and the fabric limiting mechanism. The surface stitching assembly is provided with an upper seam groove, and the sewing machine sews the zipper and the folded fabric along the contour of the upper seam groove and through the fixing mechanism to form a pocket.

[0013] Furthermore, the fabric limiting mechanism includes a pressure plate and a first pressure plate and a second pressure plate located above the pressure plate. The pressure plate is pushed to press the fabric by the extension and retraction of a cylinder. The first pressure plate and the second pressure plate are in close contact with each other and form a groove between them that allows the folding knife assembly to pass through. When sewing, the first pressure plate or the second pressure plate is moved by the cylinder so that the groove corresponds to the upper sewing groove.

[0014] Furthermore, the pressure plate is provided with a lower seam groove, the upper seam groove corresponds to the outline of the lower seam groove, and folding knife grooves are provided on both sides of the lower seam groove. The folding knife grooves are adapted to the outline of the folding knife mechanism. The first pressure plate and the second pressure plate can be moved to open the folding knife groove for the retraction of the folding knife mechanism.

[0015] Furthermore, the exposed stitching assembly includes an inner exposed stitching plate and an outer exposed stitching plate that wraps around the outer edge of the inner exposed stitching plate. The inner exposed stitching plate and the outer exposed stitching plate are connected by a connecting block, and the gap between the inner exposed stitching plate and the outer exposed stitching plate forms an upper stitching groove.

[0016] Furthermore, a toothed rack is provided at the bottom of the inner pressure plate of the exposed line.

[0017] Furthermore, the fixing mechanism includes a longitudinal connecting plate and a transverse connecting plate, which are connected by a cylinder. The cylinder's extension and retraction enable forward and backward, up and down movement.

[0018] Furthermore, the horizontal connecting plate is provided with a mounting groove, which is adapted to the outline of the fabric limiting mechanism and extends through the horizontal connecting plate, and the fabric limiting mechanism is installed in the mounting groove.

[0019] Furthermore, the folding knife mechanism includes a foldable front folding knife, a rear folding knife, a left folding knife, and a right folding knife. The front folding knife, rear folding knife, left folding knife, and right folding knife are rotated and folded by the extension and retraction of the cylinder. The left folding knife and right folding knife are used to fold the triangular cuts at both ends of the fabric.

[0020] Furthermore, a positioning mechanism is set on the worktable, and the positioning mechanism is located directly above the material plate; the positioning mechanism includes a horizontal cylinder, a vertical cylinder and a baffle plate at the installation end, and the horizontal cylinder extends and retracts to achieve left and right movement, and the vertical cylinder extends and retracts to achieve lifting.

[0021] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0022] The fixing mechanism of this utility model has a fabric limiting mechanism at the lower end. The fabric is placed on the material plate, and the fixing mechanism presses down to remove the material plate containing the fabric. Triangular cuts are formed at both ends of the fabric by laser cutting components. The triangular cuts are then folded inward by a folding knife mechanism to turn the single-layer fabric into a double-layer fabric. After the fabric limiting mechanism clamps the folded fabric, the folding knife mechanism retracts and places a zipper on the fixing mechanism. The fixing mechanism moves the zipper and fabric to the sewing machine to complete the sewing of the pocket. By adding notches at both ends of the fabric and folding it, the original single-layer fabric is increased to a double layer. The double-layer fabric and zipper have higher sewing strength, and the zipper is not easy to tear off from the pocket, which greatly improves the quality of product production. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention.

[0024] Figure 2 The fixing component of this utility model is three-dimensional. Figure 1 .

[0025] Figure 3 This is a perspective view of the exposed wire assembly of this utility model.

[0026] Figure 4 The fixing component of this utility model is three-dimensional. Figure 2 .

[0027] Figure 5 This is a perspective view of the fabric limiting mechanism of this utility model.

[0028] Figure 6 This is a partial perspective view of the present invention.

[0029] Reference numerals: 1. Workbench, 2. Sewing machine, 3. Laser cutting assembly, 4. Moving mechanism, 5. Fixing mechanism, 6. Circulating feeding mechanism, 7. Folding knife mechanism, 8. Material plate, 9. Fabric limiting mechanism, 10. Topstitching assembly, 11. Upper seam groove, 12. Pressure plate, 13. First pressure plate, 14. Second pressure plate, 15. Groove, 16. Lower seam groove, 17. Folding knife groove, 18. Inner pressure plate for topstitching, 19. Outer pressure plate for topstitching, 20. Rack, 21. Longitudinal connecting plate, 22. Transverse connecting plate, 23. Mounting groove, 24. Positioning mechanism, 25. Material stop plate. Detailed Implementation

[0030] 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.

[0031] like Figure 1-6 As shown, an automatic pocket-opening machine for folding double-layer fabric includes a worktable 1 on which a sewing machine 2 and a laser cutting assembly 3 for cutting pockets are mounted. It also includes a moving mechanism 4, at least two reusable material plates 8, a fixing mechanism 5, a folding knife mechanism 7, and a reusable feeding mechanism 6.

[0032] The moving mechanism 4 is mounted on the worktable 1 and can move back and forth and left and right by extending and retracting two cylinders in different directions.

[0033] The material plate 8 is used to manually put the fabric in. One material plate 8 is placed on the workbench 1 and located on one side of the fixing mechanism 5, and the other material plate 8 is installed on the circulating feeding mechanism 6.

[0034] The fixing mechanism 5 is used to fix the fabric and zipper, and is vertically connected to the moving mechanism 4. The moving mechanism 4 drives the fixing mechanism to move back and forth and left and right, and the cylinder installed on it extends and retracts to move up and down. During operation, the fixing mechanism 5 first moves to one side to remove the material plate 8 containing the fabric and resets it. Then, the laser cutting component 3 forms a pocket cut on the fabric. Finally, it moves to the other side to the bottom of the sewing machine 2 to sew the pocket.

[0035] The folding knife mechanism 7 is installed above the moving mechanism 4 and moves synchronously with the moving mechanism 4. The folding knife mechanism 7 is installed on the moving mechanism 4 and can move back and forth through a cylinder and a guide rail. It is used to fold the pockets cut on the fabric.

[0036] The circulating feeding mechanism 6 is located behind the fixed mechanism 5. It moves forward, backward, left, and right by extending and retracting two cylinders in different directions. After the fixed mechanism 5 takes away the material plate 8 that has been unloaded, the circulating feeding mechanism 6 moves forward and sends out another material plate 8 to be placed on the workbench 1. After the fixed mechanism 5 completes the sewing, it resets and rises. The circulating feeding mechanism 6 moves to the rear of the fixed mechanism 5 and takes away the material plate 8, and so on in a cycle.

[0037] The lower end of the fixing mechanism 5 is provided with a fabric limiting mechanism 9. The two ends of the fabric are formed into triangular cuts by the laser cutting component 3. The folding mechanism 7 folds the triangular cuts inward to form a multi-layer fabric from a single layer. After the fabric limiting mechanism 9 clamps the folded fabric, the folding mechanism 7 retracts. A zipper is placed on the fixing mechanism 5. The fixing mechanism 5 moves the zipper and fabric to the sewing machine 3 to complete the sewing of the pocket. By adding notches at both ends of the fabric and folding it, the original single-layer fabric is increased to a double layer. The double-layer fabric and the zipper have higher sewing strength, and the zipper is not easy to tear off from the pocket, which greatly increases the quality of product production.

[0038] The fixing mechanism 5 is equipped with a liftable exposed stitching assembly 10. The exposed stitching assembly 10 is detachably installed on the fixing mechanism 5, and can be removed to replace the concealed stitching assembly. The exposed stitching assembly 10 is used to sew garments with exposed seams, while the concealed stitching assembly is used to sew garments with concealed seams. The zipper is fixed inside the exposed stitching assembly 10, and the fabric is held between the material plate 8 and the fabric limiting mechanism 9. The exposed stitching assembly 10 has an upper seam groove 11. The sewing machine 3 sews along the contour of the upper seam groove 11 and through the fixing mechanism 5 to sew the zipper and the folded fabric to form a pocket.

[0039] The fabric limiting mechanism 9 includes a pressure plate 12 and a first pressure plate 13 and a second pressure plate 14 located above the pressure plate 12. The pressure plate 12 is pushed to press the fabric by the extension and retraction of a cylinder. The first pressure plate 13 and the second pressure plate 14 are close to each other and form a groove 15 between them that allows the folding knife assembly 7 to pass through. When sewing, the first pressure plate 13 or the second pressure plate 14 is moved by the cylinder, so that the groove 15 opens to correspond to the upper seam groove 11. When sewing, the needle on the sewing machine 3 can pass through the groove 15 and sew along the contour of the upper seam groove 11.

[0040] The pressure plate 12 is provided with a lower seam groove 16, and the upper seam groove 11 corresponds to the outline of the lower seam groove 16. Folding knife grooves 17 are provided on both sides of the lower seam groove 16. The folding knife grooves 17 are adapted to the outline of the folding knife mechanism 6 and are used for the folding knife mechanism 6 to bend and fold the triangular cuts at both ends of the fabric. The first pressure plate 13 and the second pressure plate 14 move to make the groove body 15 correspond to the upper seam groove 11 and the lower seam 16. At the same time, the first pressure plate 13 and the second pressure plate 14 open the folding knife groove 17 for the folding knife mechanism 6 to retract. The needle on the sewing machine 3 passes through the upper seam groove 11, the groove body 15 and the lower seam groove 16 in sequence, and sews the zipper and the fabric along the outline of the upper seam groove 11, the groove body 15 and the lower seam groove 16.

[0041] The exposed stitching assembly 10 includes an inner exposed stitching pressure plate 18 and an outer exposed stitching pressure plate 19 that wraps around the outer edge of the inner exposed stitching pressure plate 18. The inner exposed stitching pressure plate 18 and the outer exposed stitching pressure plate 19 are connected by a connecting block, which is then fixed to the inner exposed stitching pressure plate 18 and the outer exposed stitching pressure plate 19 using screws. The gap between the inner exposed stitching pressure plate 18 and the outer exposed stitching pressure plate 19 forms an upper seam groove 11, into which the zipper is inserted. The bottom of the inner exposed stitching pressure plate 18 is provided with a toothed rack 20. The toothed rack 20 passes through the upper seam groove 11, the groove body 15, and the lower seam groove 16 to press down the fabric, and is sewn along the contour of the toothed rack 20. The toothed rack 20 is used to press the fabric more tightly, preventing fabric shifting during operation, which could lead to product rework or even scrap, thus increasing the product qualification rate.

[0042] The fixing mechanism 5 includes a longitudinal connecting plate 21 and a transverse connecting plate 22. The longitudinal connecting plate 21 and the transverse connecting plate 22 are connected by multiple cylinders. The forward and backward displacement is achieved by the extension and retraction of the transverse cylinders, and the up and down movement is achieved by the extension and retraction of the longitudinal cylinders.

[0043] The horizontal connecting plate 22 is provided with a mounting groove 23. The mounting groove 23 is adapted to the outline of the fabric limiting mechanism 9 and extends through the horizontal connecting plate 22. The fabric limiting mechanism 9 is installed in the mounting groove 23 to prevent the fabric limiting mechanism 9 from shifting or misaligning.

[0044] The folding mechanism 7 includes a foldable front folding blade, a rear folding blade, a left folding blade, and a right folding blade. The front folding blade, rear folding blade, left folding blade, and right folding blade are rotated and folded by the extension and retraction of the cylinder. The left folding blade and right folding blade fold the triangular cuts at both ends of the fabric to fold the single layer of fabric into a double layer. The front folding blade and rear folding blade fold to form a bag lip.

[0045] A positioning mechanism 24 is installed on the workbench 1, located directly above the material plate 8. The positioning mechanism 24 includes a horizontal cylinder, a vertical cylinder, and a baffle plate 25 at the end of the workbench. The horizontal cylinder extends and retracts to achieve left and right movement, while the vertical cylinder extends and retracts to achieve lifting and lowering. When material is placed on the material plate 8, the positioning mechanism 24 descends and the baffle plate 25 is placed on the material plate 8, facilitating fabric positioning and ensuring the accuracy of the placement position.

[0046] The steps of the automatic bag-opening machine in this solution are as follows:

[0047] The first step is to place the fabric. The positioning mechanism 24 descends so that the baffle plate 25 is against the material plate 8. The fabric is placed flat and accurately on the material plate 8 along the outline of the baffle plate 25. Then the positioning mechanism 24 rises and retracts.

[0048] The second step is to take the material plate 8, the fixing mechanism 5 rises and moves onto the material plate 8, and then lowers to take away the material plate 8 containing the zipper. After the fixing mechanism 5 completes the material taking, it resets. At the same time, the circulating feeding mechanism 6 sends out another material plate 8 and places it on the workbench 1.

[0049] The third step is to open the bag. The laser cutting component 3 cuts the fabric to form a pocket opening and makes triangular cuts at both ends.

[0050] The fourth step is to fold the bag. The folding mechanism 7 descends, and the front folding knife, rear folding knife, left folding knife, and right folding knife pass through the visible stitching assembly 10 and enter the cut pocket. The front folding knife and rear folding knife rotate and fold to form the bag lip. The left folding knife and right folding knife rotate to fold the triangular cut inward, so that the two ends of the single-layer fabric are folded into a double layer. The double layer is used to sew the zipper.

[0051] In the fifth step, the fabric limiting mechanism 9 holds the folded fabric against the fabric, the pressure plate 12 presses the fabric, and the first pressure plate 13 and the second pressure plate 14 move laterally through the cylinder, so that the groove 15 corresponds to the upper seam groove 11 and the lower seam groove 16, and the folding knife grooves 17 on both sides are opened to retract the folding knife mechanism 7.

[0052] Step 6: Release the zipper. The exposed stitching assembly 10 is raised by the extension and retraction of the cylinder, placing the zipper above the fixing mechanism. The exposed stitching assembly 10 then descends to press down on the zipper.

[0053] Step 7: Sew the zipper and fabric together. The fixing mechanism 5 moves below the sewing machine 3 to sew the fabric and zipper together. After sewing is completed, it rises up, the fabric is manually removed, and the circulating feeding mechanism 6 moves behind the fixing mechanism 5 to remove the material plate 8.

[0054] 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 pocket-opening machine for folding double-layer fabric, comprising a worktable on which a sewing machine and a laser cutting assembly for cutting pockets are mounted, characterized in that, It also includes a moving mechanism, at least two reusable material trays, a fixing mechanism, a folding knife mechanism, and a recirculating feeding mechanism: The moving mechanism is mounted on the worktable and can move back, forth, left, and right via a cylinder. The material plate is used to place zippers or fabrics. One material plate is placed on the workbench and located on one side of the fixing mechanism, and the other material plate is installed on the circulating feeding mechanism. The fixing mechanism is used to fix the fabric and zipper, and is vertically connected to the moving mechanism. The moving mechanism moves the material board to the sewing machine for work. The folding knife mechanism is mounted on the moving mechanism and can move back and forth and up and down via a cylinder. It is used to fold the cut fabric to form a pocket. The circulating feeding mechanism is used to feed material plates onto the worktable or remove material plates that have been completed by extending and retracting a cylinder. The lower end of the fixing mechanism is provided with a fabric limiting mechanism. The two ends of the fabric are formed into triangular cuts by laser cutting components. The triangular cuts are folded inward by a folding knife mechanism to form multiple layers of fabric. After the fabric limiting mechanism clamps the folded fabric, the zipper and fabric are sewn together by a sewing machine.

2. The automatic bag-opening machine for folding double-layer fabric according to claim 1, characterized in that, The fixing mechanism is equipped with a liftable surface stitching assembly, which is detachably installed on the fixing mechanism. The zipper is fixed inside the surface stitching assembly, and the fabric is clamped between the material plate and the fabric limiting mechanism. The surface stitching assembly is equipped with an upper seam groove. The sewing machine sews the zipper and the folded fabric along the contour of the upper seam groove and through the fixing mechanism to form a pocket.

3. An automatic bag-opening machine for folding double-layer fabrics according to claim 2, characterized in that, The fabric limiting mechanism includes a pressure plate and a first pressure plate and a second pressure plate located above the pressure plate. The pressure plate is pushed to press the fabric by the extension and retraction of a cylinder. The first pressure plate and the second pressure plate are in close contact with each other and form a groove between them that allows the folding knife assembly to pass through. When sewing, the first pressure plate or the second pressure plate is moved by the cylinder so that the groove corresponds to the upper sewing groove.

4. An automatic bag-opening machine for folding double-layer fabrics according to claim 3, characterized in that, The pressure plate is provided with a lower seam groove, and the upper seam groove corresponds to the outline of the lower seam groove. Folding knife grooves are provided on both sides of the lower seam groove. The folding knife grooves are adapted to the outline of the folding knife mechanism. The first pressure plate and the second pressure plate can be moved to open the folding knife groove for the retraction of the folding knife mechanism.

5. An automatic bag-opening machine for folding double-layer fabrics according to claim 2, characterized in that, The exposed stitching assembly includes an inner exposed stitching plate and an outer exposed stitching plate that wraps around the outer edge of the inner exposed stitching plate. The inner exposed stitching plate and the outer exposed stitching plate are connected by a connecting block, and the gap between the inner exposed stitching plate and the outer exposed stitching plate forms an upper stitching groove.

6. An automatic bag-opening machine for folding double-layer fabric according to claim 5, characterized in that, The bottom of the inner pressure plate of the exposed line is provided with a toothed rack.

7. An automatic bag-opening machine for folding double-layer fabric according to claim 1, characterized in that, The fixing mechanism includes a longitudinal connecting plate and a transverse connecting plate. The longitudinal connecting plate and the transverse connecting plate are connected by a cylinder, and the cylinder's extension and retraction enable forward and backward and up and down movements.

8. An automatic bag-opening machine for folding double-layer fabric according to claim 7, characterized in that, The horizontal connecting plate is provided with a mounting groove, which is adapted to the outline of the fabric limiting mechanism and extends through the horizontal connecting plate. The fabric limiting mechanism is installed in the mounting groove.

9. An automatic bag-opening machine for folding double-layer fabric according to claim 1, characterized in that, The folding knife mechanism includes a foldable front folding knife, a rear folding knife, a left folding knife, and a right folding knife. The front folding knife, rear folding knife, left folding knife, and right folding knife are rotated and folded by the extension and retraction of the cylinder. The left folding knife and right folding knife are used to fold the triangular cuts at both ends of the fabric.

10. An automatic bag-opening machine for folding double-layer fabric according to claim 1, characterized in that, The workbench is equipped with a positioning mechanism, which is located directly above the material plate. The positioning mechanism includes a horizontal cylinder, a vertical cylinder, and a baffle plate at the installation end. The horizontal cylinder extends and retracts to achieve left and right movement, and the vertical cylinder extends and retracts to achieve lifting and lowering.

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