Bag folding device and pocket patching machine

Abstract

The utility model discloses a bag folding device and a patch pocket machine, and the bag folding device comprises a base frame, and a bag pressing mechanism and an edge folding mechanism which are arranged on the base frame; the bag pressing mechanism comprises a bag pressing plate and a bag pressing lifting driving unit for driving the bag pressing plate to lift up and down; the edge folding mechanism comprises a horizontal pushing edge folding sheet and a horizontal pushing driving unit for driving the horizontal pushing edge folding sheet to translate; first avoiding through holes which are through up and down are formed in the bag pressing plate along the periphery; the base frame is further provided with a positioning mechanism used for positioning the folded bag edge, the positioning mechanism comprises a positioning piece and a positioning lifting driving unit used for driving the positioning piece to move up and down, and the positioning piece downwards penetrates through the first avoiding through hole to be positioned on the folded bag edge. Therefore, the positioning effect is achieved through the folded edge of the folded bag piece, the problem that the folded edge is brought out when the folded edge piece is pushed horizontally to move out is effectively solved, it is ensured that the folded edge is kept intact, and the patch pocket processing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of bag folding devices, and in particular to a bag folding device and a bag attaching machine. Background Technology

[0002] Before sewing, the cut pocket pieces on clothing need to be folded at the edges, and this folding process is completed by a pocket folding device.

[0003] For example, CN220413698U discloses a drive-type top-mounted bag stacking device, which includes a base frame and a flat-push stacking unit and a rotary stacking unit mounted on the base frame. The rotary stacking unit includes a rotary cylinder and a rotary stacking piece connected to the rotary output end of the rotary cylinder. The flat-push stacking unit includes a flat-push cylinder and a flat-push stacking piece driven by the flat-push cylinder to move horizontally. The base frame includes a frame and a base plate connected to the bottom of the frame. A fabric template is provided below the base plate, and the bottom of the fabric template has an upward-facing groove. The rotary cylinder and the flat-push cylinder are both located above the base plate, and the rotary stacking piece and the flat-push stacking piece are located below the base plate and extend towards the groove of the fabric template. In this way, by placing the rotary cylinder and the flat-push cylinder above the base plate, installation is more convenient, subsequent maintenance is easier, and for the stacking piece, the area below the base plate is more concise and compact, which is beneficial for the hemming of the pocket fabric.

[0004] However, when the folded edge is very narrow, the folded edge may be pulled out when the flat-push stacked sheet is removed, which will cause the originally set ideal folded edge state to be lost, affecting the size and shape of the bag sheet after folding, and thus affecting the quality and yield of the bag-sealing operation.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main purpose is to provide a bag folding device and a bag attaching machine. By positioning the folded edge of the bag piece after folding, it effectively improves the problem of the folded edge being pulled out when the folded edge piece is pushed out, ensuring that the folded edge remains intact, which is conducive to improving the quality and yield of bag attaching.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A bag folding device includes a base frame and a bag pressing mechanism and a folding mechanism disposed on the base frame; the bag pressing mechanism includes a bag pressing plate and a bag pressing lifting drive unit for driving the bag pressing plate to move up and down; the folding mechanism includes a flat pushing folding piece and a flat pushing drive unit for driving the flat pushing folding piece to move horizontally.

[0009] The pressure plate has a first clearance hole that runs vertically through the periphery.

[0010] The base frame is also provided with a positioning mechanism for positioning the folded bag edge. The positioning mechanism includes a positioning component and a positioning lifting drive unit that drives the positioning component to move up and down, so that the positioning component passes downward through the first clearance through hole to be positioned on the folded bag edge.

[0011] As a preferred embodiment, a feeding template that can be moved to the bottom of the bag-pressing plate is provided below the bag-folding device. A second clearance through hole is arranged along the periphery of the feeding template, and the second clearance through hole is corresponding to the first clearance through hole. The positioning member passes downward through the first clearance through hole and the second clearance through hole to be positioned on the edge of the bag after folding.

[0012] As a preferred embodiment, the flat-pull folded edge piece is provided with a third clearance through hole that runs vertically through the edge. The third clearance through hole is provided corresponding to the first clearance through hole and passes through the inner edge of the flat-pull folded edge piece.

[0013] As a preferred embodiment, the positioning element is a positioning pin, which is used to insert into the edge of the folded bag piece;

[0014] or:

[0015] The positioning element is a pressing element, which is used to exert downward pressure on the folded bag sheet.

[0016] As a preferred embodiment, the flat-push folding piece is connected to a translation adjustment unit, which drives the flat-push folding piece to translate, thereby adjusting the horizontal position of the flat-push folding piece to meet different bag piece sizes.

[0017] As a preferred embodiment, the base frame includes an upper plate and a lower plate with an upper and lower spacing, the translation adjustment unit and the translation drive unit are disposed between the upper plate and the lower plate, and the positioning mechanism and the bag pressing lifting drive unit are both installed at the bottom of the lower plate.

[0018] As a preferred embodiment, the bag-pressing lifting drive unit is located within the area enclosed by the positioning mechanism, which is located above the bag-pressing plate.

[0019] As a preferred embodiment, the top of the bag-pressing plate is connected to an upwardly protruding connecting seat, and a vertical guide rail is provided around the connecting seat, and the positioning member moves up and down along the vertical guide rail.

[0020] As a preferred embodiment, the flat-pushing folding piece can be detachably connected to the flat-pushing drive unit;

[0021] And / or:

[0022] The positioning component is detachably connected to the positioning lifting drive unit.

[0023] A bag-sealing machine that uses a bag-folding device as described in any of the preceding items.

[0024] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly involves setting a positioning mechanism on the base frame for positioning the folded bag edge. The positioning mechanism includes a positioning component and a positioning lifting drive unit that drives the positioning component to move up and down. This allows the positioning component to pass downward through the first clearance through hole to be positioned on the folded bag edge, thereby positioning the folded bag edge. This effectively improves the problem of the folded edge being pulled out when the folded piece is pushed out, ensuring that the folded edge remains intact and improving the quality of the bag-attaching process.

[0025] Furthermore, the folding bag device has a clever and reasonable structural design. Its overall structure is compact and does not occupy too much space on the machine, making it easy to apply to machines such as bag-sticking machines and suitable for widespread application.

[0026] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0027] Figure 1 This is a perspective view of the bag folding device according to an embodiment of the present utility model;

[0028] Figure 2 This is another perspective view of the bag folding device according to an embodiment of the present utility model;

[0029] Figure 3 This is an exploded view of the bag-folding device according to an embodiment of the present invention;

[0030] Figure 4 This is another exploded view of the bag folding device according to an embodiment of the present invention;

[0031] Figure 5 This is a front view of the bag folding device according to an embodiment of the present invention;

[0032] Figure 6 This is a partial cross-sectional view of the bag-folding device according to an embodiment of the present invention;

[0033] Figure 7 yes Figure 6 A magnified view of a portion of the image. Detailed Implementation

[0034] Please refer to Figures 1 to 7As shown, it illustrates the specific structure of an embodiment of the present invention.

[0035] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] A bag folding device includes a base frame 10 and a bag pressing mechanism 20 and a folding mechanism 30 disposed on the base frame 10. The bag pressing mechanism 20 includes a bag pressing plate 21 and a bag pressing lifting drive unit 22 that drives the bag pressing plate 21 to move up and down. Typically, the bottom of the bag pressing plate 21 (also called a fabric template) is recessed upward with a groove 211, which conforms to the shape of the folded bag piece. The folding mechanism 30 includes multiple sets of flat pushing folding pieces 31 and a flat pushing drive unit 32 that drives the flat pushing folding pieces 31 to move horizontally. Typically, a rotating stacking unit 40 is also disposed on the base frame 10. The rotating stacking unit 40 includes a rotating cylinder 41 and a rotating stacking piece 42 connected to the rotating output end of the rotating cylinder 41.

[0037] The pressure plate 21 has a first clearance through hole 1 arranged along its perimeter. For example, the first clearance through hole 1 is provided on all four sides 2101 of the perimeter. The number and size of these first clearance through holes 1 can be flexibly designed as needed. They can be integrated or spaced on a single side, and there are no restrictions.

[0038] The base frame 10 is also provided with a positioning mechanism 50 for positioning the folded bag edge. The positioning mechanism 50 includes a positioning element 51 and a positioning lifting drive unit 52 for driving the positioning element 51 to move up and down, so that the positioning element 51 passes downward through the first clearance through hole 1 to be positioned on the folded bag edge.

[0039] Below the folding bag device is a movable feeding template 60 that can be moved to the bottom of the pressing plate 21. The feeding template 60 is used to place the pocket fabric. The feeding template 60 is designed to mimic the shape of the folded bag piece. The feeding template 60 has a second clearance hole 2 that runs vertically through its periphery. The second clearance hole 2 is corresponding to the first clearance hole 1. The flat folding edge piece 31 has a third clearance hole 3 that runs vertically through its periphery. The third clearance hole 3 is corresponding to the first clearance hole 1 and passes through the inner edge of the flat folding edge piece 31. During operation, the feeding template 60 faces the groove 211 on the bottom surface of the bag pressing plate 21. The feeding template 60 is connected to a feeding lifting drive unit. The feeding template 60, with the bag piece placed on it, is fitted upward into the groove 211. The periphery of the bag piece that needs to be folded is bent downward or slightly downward, which facilitates the flat folding piece 31 to push the periphery of the bag piece inward to achieve folding. Subsequently, the positioning piece 51 passes downward through the first clearance through hole 1 and the second clearance through hole 2 to be positioned on the folded bag edge. In this state, when the flat folding piece 31 moves outward, it will not pull the folded bag edge outward, ensuring that the folded state is positioned and maintained. Then, the positioning piece 51 is reset upward, and the feeding template 60 moves to another location (such as the sewing station) with the folded bag piece. This can provide a bag piece with a complete fold, which is beneficial to the stable and reliable quality of subsequent operations (such as bag edge sewing).

[0040] The positioning element 51 is a positioning pin, which is used to insert into the single or multiple layers of the bag edge after folding (for example, the bag edge usually presents two layers after folding, and the positioning pin can be inserted into the upper and lower layers of the bag edge, or it can be inserted into the upper layer of the bag edge and the tip of the pin forms a downward pressing force on the lower layer of the bag edge), so that when the flat folding piece 31 moves outward, it will not bring the folded bag edge outward.

[0041] The working process of the bag folding device is described below:

[0042] A bag piece is placed on the feeding template 60. The bag folding device is folded downwards (or the feeding template 60 is folded upwards) so that the pressing plate 21 presses down on the bag piece on the feeding template 60. The perimeter of the bag piece that needs to be folded is bent downwards or slightly downwards. Then, the flat pushing folding piece 31 pushes the perimeter of the bag piece inwards to achieve folding. Subsequently, the positioning member 51 passes downwards through the first clearance through hole 1 and the second clearance through hole 2 to be positioned on the folded bag edge. In the case of needle puncture, since the flat pushing folding piece 31 has a pre-set... A third clearance through hole 3 is provided, and the positioning element 5 may pierce through the folded edge of the bag and extend into the third clearance through hole 3; then, the flat-pushing folding piece 31 moves outward. During this process, since the folded edge of the bag is always positioned and held by the positioning element 5, the friction between the flat-pushing folding piece 31 and the bottom of the fold is insufficient to pull the fold outward; then, the positioning element 51 resets upward; then, the feeding template 60 and the bag folding device maintain a vertical distance (one resets or both reset).

[0043] In another embodiment, the positioning member 51 is a pressing member, which is used to exert downward pressure on the folded bag piece so that when the flat folding piece 31 moves outward, it will not pull the folded bag edge outward.

[0044] Considering different bag pieces, the flat push folding piece 31 is connected to a translation adjustment unit. The translation adjustment unit drives the flat push folding piece 31 to translate, so as to adjust the horizontal position of the flat push folding piece 31 to meet the folding requirements of different bag piece sizes.

[0045] The bag folding device of this embodiment has an ingenious structural design, resulting in a very compact structure. Compared with traditional bag folding devices, it is only slightly taller, with almost no increase in overall size. Specifically, the base frame 10 includes an upper plate (not shown in the figure) and a lower plate 11 spaced vertically. The translation adjustment unit and the horizontal push drive unit 32 are disposed between the upper plate and the lower plate 11. The positioning mechanism 50 and the bag pressing and lifting drive unit 22 are both installed at the bottom of the lower plate 11. The bag pressing and lifting drive unit 22 is located within the area enclosed by the positioning mechanism 50, which is located above the bag pressing plate 21. The top of the bag pressing plate 21 is connected to an upwardly protruding connecting seat 212. A vertical guide rail 2121 is provided around the connecting seat 212. The positioning member 51 moves up and down along the vertical guide rail 2121, providing excellent guidance and positioning.

[0046] Typically, the flat-push folding piece 31 is detachably connected to the flat-push drive unit 32; and / or, the positioning element 51 is detachably connected to the positioning lifting drive unit 52. The detachable flat-push folding piece 31 can meet the folding requirements of different bag pieces, and the positioning element 51 can be replaced to match the flat-push folding piece 31, or different positioning elements 51 can be selected according to different fabric pressing or tucking requirements. Of course, the detachable design can also meet the needs of repairing and replacing damaged parts of the flat-push folding piece 31 or the positioning element 51. Furthermore, the positioning element 51 and the flat-push folding piece 31 can be finely adjusted in their vertical height, horizontal position (left, right, or front and back), for example, by designing strip holes to allow for adjustments to their installation positions.

[0047] Furthermore, a bag-applying machine is provided, which utilizes the bag-folding device described above. Typically, the bag-applying machine includes a frame, a bag-folding device, a transfer device, and a sewing device. The frame is equipped with a worktable, on which a bag-folding station and a sewing station are located. The bag-folding device is positioned above the bag-folding station. The transfer device can move back and forth between the bag-folding station and the sewing station. The sewing device is positioned corresponding to the sewing station. Both the transfer device and the sewing device can employ existing mature technologies, which will not be elaborated upon here. When the bag-applying machine is working, the main body material or trouser material is first placed at the bag-folding station on the worktable, and the bag piece is placed on the feeding template 60. The bag-folding device folds the bag piece into shape. At this time, the flat-pushing folding piece 31 and the positioning piece 51 have been reset. The folded bag piece is stacked on the main material, and the transfer device moves the workpiece to the sewing station for sewing. Since the bag edge is kept intact after folding, there is no phenomenon of the folding edge being pulled out by the flat-pushing folding piece 31. Whether it is a wide folding edge or a narrow folding edge, the folding edge can be accurately controlled, which is conducive to improving the sewing accuracy and quality of the bag opening.

[0048] The key design feature of this utility model is that it also provides a positioning mechanism 50 on the base frame 10 for positioning the folded bag edge. The positioning mechanism 50 includes a positioning element 51 and a positioning lifting drive unit 52 for driving the positioning element 51 to move up and down. This allows the positioning element 51 to pass downward through the first clearance through hole 1 and be positioned on the folded bag edge, thus positioning the folded bag edge. This effectively improves the problem of the folded edge being pulled out when the folded edge piece 31 is pushed out, ensuring that the folded edge remains intact and improving the quality of the bag patching process.

[0049] Furthermore, the folding bag device has a clever and reasonable structural design. Its overall structure is compact and does not occupy too much space on the machine, making it easy to apply to machines such as bag-sticking machines and suitable for widespread application.

[0050] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A bag folding device, comprising a base frame and a bag pressing mechanism and a folding mechanism disposed on the base frame; the bag pressing mechanism includes a bag pressing plate and a bag pressing lifting drive unit for driving the bag pressing plate to move up and down; the folding mechanism includes a flat-pushing folding piece and a flat-pushing drive unit for driving the flat-pushing folding piece to translate; characterized in that, The pressure plate has a first clearance hole that runs vertically through the periphery. The base frame is also provided with a positioning mechanism for positioning the folded bag edge. The positioning mechanism includes a positioning component and a positioning lifting drive unit that drives the positioning component to move up and down, so that the positioning component passes downward through the first clearance through hole to be positioned on the folded bag edge.

2. The bag folding device according to claim 1, characterized in that, Below the bag folding device is a movable feeding template that can be moved to the bottom of the bag pressing plate. The feeding template has a second clearance through hole arranged along its periphery. The second clearance through hole is corresponding to the first clearance through hole. The positioning member passes downward through the first clearance through hole and the second clearance through hole to be positioned on the edge of the bag after folding.

3. A bag-folding device according to claim 1 or 2, characterized in that, The flat-pull folded edge piece is provided with a third clearance through hole that runs vertically through the edge. The third clearance through hole is provided in correspondence with the first clearance through hole and passes through the inner edge of the flat-pull folded edge piece.

4. A bag-folding device according to claim 1, characterized in that, The positioning element is a positioning pin, which is used to insert into the edge of the folded bag piece; or: The positioning element is a pressing element, which is used to exert downward pressure on the folded bag sheet.

5. A bag-folding device according to claim 1, characterized in that, The flat-push folding piece is connected to a translation adjustment unit, which drives the flat-push folding piece to translate, so as to adjust the horizontal position of the flat-push folding piece to meet different bag piece sizes.

6. A bag-folding device according to claim 5, characterized in that, The base frame includes an upper plate and a lower plate with a vertical spacing. The translation adjustment unit and the translation drive unit are disposed between the upper plate and the lower plate. The positioning mechanism and the bag pressing and lifting drive unit are both installed at the bottom of the lower plate.

7. A bag-folding device according to claim 6, characterized in that, The bag-pressing lifting drive unit is located within the area enclosed by the positioning mechanism, which is located above the bag-pressing plate.

8. A bag-folding device according to claim 7, characterized in that, The top of the bag-pressing plate is connected to an upwardly protruding connecting seat, and a vertical guide rail is provided around the connecting seat. The positioning member moves up and down along the vertical guide rail.

9. A bag-folding device according to claim 1, characterized in that, The push-folding piece can be detachably connected to the push-drive unit; And / or: The positioning component is detachably connected to the positioning lifting drive unit.

10. A bag-sealing machine, characterized in that: The application includes a bag-folding device as described in any one of claims 1 to 9.

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