Bag folding device for bag opening machine
Patent Information
- Application Number
- CN202522528818.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-28
AI Technical Summary
Existing bag opening machines require manual replacement of folding blades according to the bag opening size during bag folding, resulting in long replacement time and high mold costs.
A lifting seat and folding blade plate structure was designed. Multiple small folding blades are installed on the folding blade plate. The length of the folding blades can be adjusted by horizontal and vertical displacement. Combined with a telescopic elastic plate, it can automatically adapt to the folding needs of bag openings of different sizes.
The process of adjusting the folding knife has been simplified, improving processing efficiency, reducing production costs, and enhancing the folding effect of the bag.
Smart Images

Figure CN224930779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pocket processing equipment technology, and in particular to a folding device for a bag opening machine. Background Technology
[0002] In the garment manufacturing process, pocket opening machines are an essential auxiliary processing machine. They are mainly used to create pockets in specific locations on the garment to facilitate carrying small items such as mobile phones and wallets. The current practice is to process the pocket opening and the pocket lip separately first, and then sew the pocket lip onto the pocket opening to complete the pocket opening.
[0003] Furthermore, during bag opening processing, the bag opening needs to be cut and folded. This involves using a folding knife to fold the cut opening to create a pocket fold. However, currently, when folding bag openings of different sizes, it is often necessary to manually change the folding knife according to the actual size of the bag opening. For example, when folding a longer bag opening, it is generally necessary to manually disassemble and replace it with a longer folding knife to allow for a larger contact area and folding of the edge, thus ensuring the folding effect of the pocket. This not only increases the time spent on changing and adjusting the folding knife but also increases the mold cost of the folding knife. Therefore, improvements are urgently needed. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a bag folding device for bag opening machine processing.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A bag-folding device for a bag-opening machine includes a lifting seat with a lifting mechanism. The lifting seat is provided with folding blades that are distributed in the front and back and can move relative to each other in the front and back. Multiple small folding blades that are driven to move horizontally are installed at intervals on the folding blades.
[0007] Preferably, a telescopic slide rail is installed laterally on the folding blade plate, and the small folding blade can slide horizontally along the telescopic slide rail under drive.
[0008] Preferably, the lifting seat is equipped with a telescopic adjustment plate, the telescopic adjustment plate is inclinedly provided with a groove and a folding knife shaft is slidably provided in the groove, and the small folding knife is connected to the groove via the folding knife shaft.
[0009] Preferably, the lifting seat is equipped with an adjusting motor, which drives the telescopic adjusting plate to move up and down via an adjusting screw.
[0010] Preferably, the lifting seat is provided with a folding blade slide rail extending forward and backward, and the folding blade plate can slide along the folding blade slide rail when driven.
[0011] Preferably, the lifting base is provided with a lifting block and a connecting rod rotatably connected to the lifting block, and one end of the connecting rod is rotatably connected to the folding blade plate.
[0012] Preferably, a drive motor is installed on the lifting base, and the drive motor drives the lifting block to move up and down via a folding screw.
[0013] Preferably, the lifting seat is slidably lifted and lowered on a fixed seat, and a servo motor is installed on the fixed seat. The servo motor drives the lifting seat to move up and down via a lifting screw.
[0014] Preferably, the horizontally distributed small folding blades are equipped with telescopic elastic plates, which expand and contract with the displacement of the small folding blades.
[0015] Preferably, the telescopic elastic plate is a silicone plate or a soft rubber plate.
[0016] The beneficial effects of this utility model are:
[0017] 1. By installing multiple small folding blades at intervals on the folding blade plate, the multiple small folding blades cooperate to form a folding blade for folding the edge of the pocket. The overall length of the folding blade can be adaptively adjusted by setting the small folding blades to horizontal displacement, so as to adapt to the processing needs of pockets of different sizes. Compared with the existing method that requires disassembling and replacing folding blades, the adjustment method of the folding blade of this utility model is simpler and more efficient, and improves the processing efficiency of pockets invisibly, while reducing production costs.
[0018] 2. The small folding knife is slidably set on the telescopic slide rail, and the small folding knife is connected to the inclined groove of the telescopic adjustment plate via the folding knife shaft. When the telescopic adjustment plate moves up and down, it guides and drives the small folding knife to move laterally through the inclined groove, so as to stably adjust the overall length of the folding knife composed of multiple small folding knives. Thus, without replacing the folding knife, it can meet the folding bag processing of different sized pockets.
[0019] 3. Install a telescopic elastic plate on the small folding knife. When the small folding knife slides, it can stretch and deform the telescopic elastic plate, so that the telescopic elastic plate deforms and fills the gap between the small folding knives. Then, through the cooperation between the small folding knife and the telescopic elastic plate, a larger contact area can be made to fold the edge of the pocket, resulting in a better folding effect. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a partial structural diagram of the present invention. Figure 1 ;
[0022] Figure 3 This is a partial structural diagram of the present invention.Figure 2 ;
[0023] Figure 4 This is a schematic diagram of the interior of the present invention. Figure 1 ;
[0024] Figure 2 This is a schematic diagram of the interior of the present invention. Figure 6 ;
[0025] Figure 3 This is a schematic diagram of the interior of the present invention. Figures 1-6 .
[0026] In the diagram: fixed base 1, servo motor 11, lifting screw 12, lifting base 13, folding blade plate 2, telescopic slide rail 21, small folding blade 22, drive motor 23, folding blade screw 231, lifting block 24, connecting rod 25, folding blade slide rail 26, telescopic elastic plate 27, telescopic adjustment plate 3, inclined groove 31, folding blade shaft 32, adjustment motor 33, adjustment screw 331. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0028] In the description of this specification, 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 used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit 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.
[0029] like Figure 6 As shown, a bag-folding device for bag-opening machine processing includes a lifting seat 13 that is slidably and vertically mounted on a fixed seat 1. A servo motor 11 is installed on the fixed seat 1. The servo motor 11 drives the lifting seat 13 to move up and down via a lifting screw 12. The lifting seat 13 is provided with folding blades 2 that are distributed in front and behind and can move relative to each other in front and behind, so that the lifting seat 13 drives the two folding blades 2 to move up and down.
[0030] Multiple small folding blades 22, which are subject to horizontal displacement, are installed at intervals on the folding blade plate 2. The multiple small folding blades 22 on the same side cooperate to form a folding blade for folding the edge of the pocket. The overall length of the folding blade is changed by adjusting the horizontal displacement of the small folding blades 22, that is, the overall length of the folding blade can be adjusted adaptively to meet the processing needs of pockets of different sizes. Compared with the existing method that requires disassembling and replacing folding blades, the adjustment method of the folding blade in this embodiment is simpler and more efficient, and it improves the processing efficiency of pockets and reduces production costs.
[0031] The lifting seat 13 is provided with a folding knife slide rail 26 extending in the front and back, so that the folding knife plate 2 can be driven to slide along the folding knife slide rail 26, thereby driving the multiple small folding knives 22 distributed in the front and back to move back and forth, so as to realize the bag folding action.
[0032] Specifically, the lifting base 13 is equipped with a lifting block 24 and a connecting rod 25 rotatably connected to the lifting block 24. One end of the connecting rod 25 is rotatably connected to the folding blade plate 2, that is, both ends of the connecting rod 25 are respectively connected to the folding blade plate 2 and the lifting block 24. The lifting base 13 is equipped with a drive motor 23. The drive motor 23 drives the lifting block 24 to move up and down via the folding blade screw 231. When the lifting block 24 moves upward, it pulls the two folding blade plates 2 closer together via the connecting rod 25. When the lifting block 24 moves downward, it drives the two folding blade plates 2 to move away from each other via the connecting rod 25.
[0033] Furthermore, to improve the reliability of adjusting the length of the folding knife, a telescopic slide rail 21 is installed horizontally on the folding knife plate 2, and the small folding knives 22 are slidably arranged on the telescopic slide rail 21 at intervals. The small folding knives 22 can be driven to slide horizontally along the telescopic slide rail 21 to adjust the overall length of the folding knife composed of multiple small folding knives 22.
[0034] Specifically, the lifting seat 13 is equipped with a telescopic adjustment plate 3, and the lifting seat 13 is equipped with an adjustment motor 33. The adjustment motor 33 can be a servo drive motor, and the adjustment motor 33 drives the telescopic adjustment plate 3 to move up and down via the adjustment screw 331.
[0035] The telescopic adjustment plate 3 is inclinedly provided with a groove 31 and a folding knife shaft 32 slidably disposed in the groove 31. There are multiple grooves 31 and folding knife shafts 32, which correspond to small folding knives 22 distributed in front and behind. The small folding knives 22 are connected to the groove 31 via the folding knife shaft 32. It can also be understood that the folding knife shaft 32 is slidably connected to the groove 31 and small folding knives 22 are respectively passed through its two ends.
[0036] Multiple inclined slots 31 are symmetrically arranged on both sides of the folding blade plate 2. When the telescopic adjustment plate 3 moves up or down, the inclined slots 31 guide and drive the small folding blade 22 to move laterally, as shown in the reference. As shown, when the telescopic adjustment plate 3 moves downward, the multiple small folding blades 22 distributed at the front and back slide towards the middle to reduce the overall length of the multiple small folding blades 22; when the telescopic adjustment plate 3 moves upward, the multiple small folding blades 22 distributed at the front and back slide towards both sides to increase the overall length of the multiple small folding blades 22. Thus, the overall length of the folding blade composed of multiple small folding blades 22 can be stably adjusted by telescopic adjustment, and the folding blades can be replaced to meet the folding bag processing of different sized pockets.
[0037] Furthermore, the horizontally distributed small folding blades 22 are equipped with telescopic elastic plates 27. This can be understood as the telescopic elastic plates 27 being connected to multiple small folding blades 22. The telescopic elastic plates 27 are silicone plates or soft rubber plates. The telescopic elastic plates 27 expand and contract with the displacement of the small folding blades 22; that is, the telescopic elastic plates 27 can expand and contract under tensile force. Furthermore, when the small folding blades 22 slide, they can stretch and deform the telescopic elastic plates 27, causing them to deform and fill the gaps between the small folding blades 22. Through the cooperation of the small folding blades 22 and the telescopic elastic plates 27, a larger contact area can be reached and the pocket's folded edge can be folded, resulting in a better folding effect.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bag-folding device for a bag-opening machine, comprising a lifting seat (13) with a lifting mechanism, characterized in that: The lifting seat (13) is provided with a folding blade plate (2) that is distributed in front and behind and can move in relative front and back. Multiple small folding blades (22) that are driven to move horizontally are installed at intervals on the folding blade plate (2).
2. The bag-folding device for bag-opening machine processing as described in claim 1, characterized in that: A telescopic slide rail (21) is installed horizontally on the folding blade plate (2), and the small folding blade (22) can slide horizontally along the telescopic slide rail (21) when driven.
3. The bag-folding device for bag-opening machine processing as described in claim 1, characterized in that: The lifting seat (13) is equipped with a telescopic adjustment plate (3), and the telescopic adjustment plate (3) is inclinedly provided with a groove (31) and a folding knife shaft (32) slidably provided in the groove (31). The small folding knife (22) is connected to the groove (31) via the folding knife shaft (32).
4. The bag-folding device for bag-opening machine processing as described in claim 3, characterized in that: An adjusting motor (33) is installed on the lifting seat (13), and the adjusting motor (33) drives the telescopic adjusting plate (3) to move up and down via the adjusting screw (331).
5. The bag-folding device for bag-opening machine processing as described in claim 1, characterized in that: The lifting seat (13) is provided with a folding knife slide rail (26) extending in the front and back, and the folding knife plate (2) can slide along the folding knife slide rail (26) when driven.
6. The bag-folding device for bag-opening machine processing as described in claim 1, characterized in that: The lifting seat (13) is equipped with a lifting block (24) and a connecting rod (25) rotatably connected to the lifting block (24). One end of the connecting rod (25) is rotatably connected to the folding blade plate (2).
7. The bag-folding device for bag-opening machine processing as described in claim 6, characterized in that: A drive motor (23) is installed on the lifting seat (13), and the drive motor (23) drives the lifting block (24) to move up and down via the screw rod (231).
8. The bag-folding device for bag-opening machine processing as described in claim 1, characterized in that: The lifting seat (13) is slidably lifted and lowered on the fixed seat (1). A servo motor (11) is installed on the fixed seat (1). The servo motor (11) drives the lifting seat (13) to move up and down via the lifting screw (12).
9. The bag-folding device for bag-opening machine processing as described in claim 1, characterized in that: A telescopic elastic plate (27) is installed on the horizontally distributed small folding blades (22), and the telescopic elastic plate (27) is stretched and deformed by the displacement of the small folding blades (22).
10. The bag-folding device for bag-opening machine processing as described in claim 9, characterized in that: The elastic plate (27) is a silicone plate or a soft rubber plate.
