A bag folding aid

By designing an adjustable combination of middle and side plates and a roller structure, the problem of high cost and poor compatibility with manual tools in existing bag folding equipment has been solved, achieving flexible adaptation and efficient folding, which is suitable for small and medium-sized enterprises and handicraft workshops.

CN224493199UActive Publication Date: 2026-07-14SUZHOU JISTAR SEMICONDUCTOR TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU JISTAR SEMICONDUCTOR TECHNOLOGY CO LTD
Filing Date
2025-09-10
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing bag folding equipment is costly and takes up a lot of space, making it difficult to apply to small and medium-sized enterprises. Manual tools have a fixed structure, cannot be adapted to bags of different sizes or materials, and result in uneven folding and high frictional resistance, affecting the quality and efficiency of the finished product.

Method used

A bag folding aid tool was designed, which includes a middle plate, side plates, pull rods, and rollers. By combining the adjustable middle plate and side plates with pull rods and positioning holes, it can flexibly adapt to bags of different sizes, and the rollers reduce friction to ensure smooth folding.

Benefits of technology

It achieves flexible adaptation to bags of different sizes, reduces frictional resistance, improves folding efficiency and consistency of finished product quality, and is suitable for small-batch manual operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of bag folding auxiliary tools, including middle plate, further include: two groups of middle plate upside-down symmetry is arranged;Pull rod, detachably connected in middle plate two ends;Side plate, detachably connected in middle plate two sides;Roller, along the length direction of middle plate, it is linear array layout in middle plate two sides, and it is linear array layout in the outside of side plate, the wheel surface of the roller protrudes the side of middle plate and side plate.The utility model in, by adjustable middle plate and side plate combination design, in combination with pull rod and positioning hole mechanism, flexible adaptation to different size bags is realized, while using roller to reduce friction, ensure the smooth sliding of bag in folding process, simple structure, easy to disassemble, applicable to small batch manual operation.
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Description

Technical Field

[0001] This utility model relates to the field of folding tool technology, and in particular to a bag folding auxiliary tool. Background Technology

[0002] Flexible bags (such as plastic bags, non-woven bags, and paper bags) are widely used in modern packaging, logistics, and daily life. After production, these bags typically need to be folded for storage, transportation, and sale. Currently, existing bag folding equipment and technologies are mainly concentrated in fully automated equipment used in large industrial production lines. While this type of equipment can achieve efficient and precise folding, it suffers from high costs and large footprint, making it unsuitable for small and medium-sized enterprises or small-scale production scenarios.

[0003] For small and medium-sized enterprises and small workshops that are cost-sensitive and have a small production scale, they often rely on simple manual folding tools. However, these tools generally have many drawbacks: for example, they have a fixed structure and lack flexibility, making them unsuitable for bags of different sizes or materials; they are inconvenient to adjust and it is difficult to quickly set the required folding width; and they have high frictional resistance during the folding process, which can easily cause the bags to be stretched and deformed or folded unevenly, affecting the quality of the finished product and operational efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a bag folding auxiliary tool in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bag folding aid, including a middle plate, and further comprising:

[0007] The two sets of middle plates are symmetrically arranged at the top and bottom;

[0008] The tie rod is detachably connected to both ends of the middle plate;

[0009] Side panels, detachably connected to both sides of the middle plate;

[0010] The rollers are arranged in a linear array on both sides of the middle plate and on the outer side of the side plate along the length of the middle plate, and the roller surfaces protrude from the sides of the middle plate and the side plate.

[0011] As a further description of the above technical solution:

[0012] The pull rod is inserted between the rollers on both sides of the middle plate and rolls in contact with the rollers. The pull rod has several equidistant positioning holes along its length. The middle plate is fitted with a second bolt that is threadedly connected to the pull rod.

[0013] As a further description of the above technical solution:

[0014] Pull rings are fixedly connected to both ends of the pull rod.

[0015] As a further description of the above technical solution:

[0016] The middle plate has grooves on both sides, and a convex plate that matches the groove is fixedly connected to the inner side of the side plate. A first bolt that is threadedly connected to the middle plate is installed on the convex plate.

[0017] As a further description of the above technical solution:

[0018] The inner side of the side plate is fixedly connected to an insert plate that passes between two adjacent sets of rollers, and the first bolt passes through the insert plate.

[0019] As a further description of the above technical solution:

[0020] The middle plate has a relief groove to accommodate the second bolt.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: Through the adjustable middle plate and side plate combination design, combined with the pull rod and positioning hole mechanism, flexible adaptation to bags of different sizes is achieved. At the same time, the use of rollers to reduce friction ensures smooth sliding of the bag during the folding process. More importantly, this design is simple in structure, easy to assemble and disassemble, and suitable for small-batch manual operations. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of a bag folding aid tool provided according to an embodiment of the present utility model is shown;

[0023] Figure 2 It shows Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 An exploded view of a bag folding aid tool according to an embodiment of the present invention is shown.

[0025] Figure 4 A top view schematic diagram of a bag folding aid provided according to an embodiment of the present utility model is shown;

[0026] Figure 5 It shows Figure 4 Schematic sectional view along the AA direction.

[0027] Legend:

[0028] 1. Middle plate; 101. Groove; 102. Relief groove; 2. Side plate; 3. Tie rod; 301. Positioning hole; 4. First bolt; 5. Second bolt; 6. Protruding plate; 7. Roller; 8. Pull ring; 9. Insert plate. Detailed Implementation

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 This utility model provides a technical solution: a bag folding auxiliary tool, including a middle plate 1, with two sets of middle plates 1 symmetrically arranged vertically, and a pull rod 3 detachably connected to both ends of the middle plate 1 to assist in pulling the middle plate 1 out of the bag. Side plates 2 are detachably connected to both sides of the middle plate 1, and their installation and quantity (one side or both sides) can be selected as needed. Rollers 7 are arranged in a linear array along the length of the middle plate 1 on both sides of the middle plate 1 and in a linear array on the outer side of the side plates 2. The wheel surface of the rollers 7 protrudes from the sides of the middle plate 1 and the side plates 2 to reduce friction and facilitate the smooth pulling of the middle plate 1 out. Depending on the size of the bag to be folded and the required folding width, the tool can flexibly choose to use the middle plate 1 alone, the middle plate 1 plus two side plates 2, or the middle plate 1 plus one side plate 2.

[0031] Specifically, such as Figure 2 and Figure 3 As shown, the pull rod 3 is inserted between the rollers 7 on both sides of the middle plate 1 and rolls in contact with the rollers 7. The pull rod 3 has several equidistant positioning holes 301 along its length to adjust the extension length and improve versatility. The extension length of the pull rod 3 is adjusted according to the specific size of the bag, thereby improving the versatility and adaptability of the tool. The middle plate 1 is equipped with a second bolt 5 that is threadedly connected to the pull rod 3 to fix the position of the pull rod 3, and is equipped with a relief groove 102 to avoid interference. Pull rings 8 are fixedly connected to both ends of the pull rod 3 to facilitate pulling out the middle plate 1. The pull rings 8 are also covered with silicone to improve the feel.

[0032] Specifically, such as Figure 2 , Figure 3 and Figure 5 As shown, grooves 101 are provided on both sides of the middle plate 1. A protruding plate 6 that matches the grooves 101 is fixedly connected to the inner side of the side plate 2. A first bolt 4 that is threadedly connected to the middle plate 1 is installed on the protruding plate 6 to fix the side plate 2 to the middle plate 1. An insert plate 9 that passes between two adjacent sets of rollers 7 is fixedly connected to the inner side of the side plate 2. The first bolt 4 passes through the insert plate 9 to facilitate the disassembly of the side plate 2.

[0033] Working principle: When using it, first, based on the size of the bag and the required folding width, decide whether to use the single width of the middle plate 1, the total width of the middle plate 1 plus the two side plates 2, or only one side plate 2.

[0034] Next, place the middle plate 1 on the flat bag, add the side plate 2 if necessary, and fix it with the first bolt 4. Fold the bag continuously in one direction around the middle plate 1, using the middle plate 1 as the folding reference to ensure that the width of each fold is consistent. During the folding process, the roller 7 reduces the friction between the bag and the middle plate 1 or the side plate 2, making the folding smoother.

[0035] After folding, use the pull ring 8 to pull the lever 3, starting from one end of the middle plate 1, and gradually pull the middle plate 1 out from the middle. Since the pull ring 8 is wrapped with silicone, it provides a better feel and increases the comfort of operation. After the middle plate 1 is fully pulled out, the folded bag will present a neat folding effect, which is convenient for subsequent storage or packaging steps. It not only improves the efficiency and consistency of bag folding, but also enhances the applicability of the tool through the adjustable structure, which is suitable for the folding needs of bags of various sizes and materials.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bag folding aid, comprising a middle plate (1), characterized in that, Also includes: The two sets of middle plates (1) are symmetrically arranged vertically; The pull rod (3) is detachably connected to both ends of the middle plate (1); Side panels (2) are detachably connected to both sides of the middle plate (1); Rollers (7) are arranged in a linear array on both sides of the middle plate (1) and on the outside of the side plate (2) along the length direction of the middle plate (1). The wheel surface of the rollers (7) protrudes from the sides of the middle plate (1) and the side plate (2).

2. The bag folding aid tool according to claim 1, characterized in that, The pull rod (3) is inserted between the rollers (7) on both sides of the middle plate (1) and rolls in contact with the rollers (7). The pull rod (3) has several equidistant positioning holes (301) along its length direction. The middle plate (1) is equipped with a second bolt (5) that is threadedly connected to the pull rod (3).

3. The bag folding aid tool according to claim 2, characterized in that, Pull rings (8) are fixedly connected to both ends of the pull rod (3).

4. The bag folding aid tool according to claim 3, characterized in that, The middle plate (1) has grooves (101) on both sides, and the inner side of the side plate (2) is fixedly connected to a convex plate (6) that matches the grooves (101). The convex plate (6) is equipped with a first bolt (4) that is threadedly connected to the middle plate (1).

5. A bag folding aid tool according to claim 4, characterized in that, The inner side of the side plate (2) is fixedly connected to a insert plate (9) that passes between two adjacent sets of rollers (7), and the first bolt (4) passes through the insert plate (9).

6. A bag folding aid tool according to claim 5, characterized in that, The middle plate (1) is provided with a relief groove (102) for accommodating the second bolt (5).