A folding device for reinforcing strips at the mouth of paper bags

Abstract

This utility model relates to the field of bag opening reinforcement strip folding technology, and discloses a folding device for paper bag opening reinforcement strips, including a support frame. A connecting plate 1 is fixedly connected to the upper surface of the support frame, and a connecting plate 2 is fixedly connected to the outer wall of the connecting plate 1. A conveyor belt is provided inside the connecting plate 2. A folding block is slidably connected to the upper surface of the connecting plate 2. A fixing block 1 is fixedly connected to the outer wall of the connecting plate 1. A hydraulic cylinder 1 is fixedly connected inside the connecting plate 1. A leveling component is provided at the output end of the hydraulic cylinder 1. The leveling component includes a fixing block 2, a connecting frame, a rotating block 1, and a fixing block 3. The outer wall of the fixing block 2 is fixedly connected to the output end of the hydraulic cylinder 1. In this utility model, the hydraulic cylinder 1 pushes the fixing block 2, causing the rotating block 1 and the rotating block 2 to rotate at a certain angle, which drives the fixing block 3 to slide. At this time, the fixing block 2 slides inside the connecting frame, and the leveling block slides with the fixing block 3 to perform leveling.

Description

Technical Field

[0001] This utility model relates to the field of bag opening reinforcement strip folding technology, and in particular to a folding device for paper bag opening reinforcement strips. Background Technology

[0002] In the paper bag production process, the bag opening usually needs to be reinforced with a strip (such as steel wire, plastic strip, or thick paper tape) to improve structural strength, facilitate carrying, or enhance durability. The traditional reinforcement strip folding process requires multiple steps such as positioning and folding. If the bag opening or reinforcement strip is bent or uneven, it can easily lead to problems such as crooked folds and poor adhesion, affecting the quality of the finished product.

[0003] In existing technologies, most paper bag reinforcing strip folding equipment adopts a mechanical pressing structure. Its working principle is as follows: the paper bag is conveyed to the folding station via a conveyor belt, and the reinforcing strip and the bag opening are simultaneously bent and pressed together using the cooperation of a fixed pressure plate and a movable pressure plate. Some equipment is also equipped with guide grooves or limiting baffles to constrain the folding direction of the reinforcing strip. The driving method is usually a cylinder or motor driving a cam mechanism to realize the reciprocating motion of the pressure plate. Although this type of structure can complete the basic folding function, it has high requirements for the initial flatness of the bag opening and the reinforcing strip. If the incoming material is deformed or bent, manual pre-adjustment is required; otherwise, poor folding is likely to occur.

[0004] However, the existing technology has problems. Due to the lack of a pre-flattening mechanism for the bag opening and reinforcing strip, if the bag opening is irregularly deformed due to transportation or stacking, or if the reinforcing strip itself is bent, direct folding will cause the folding position to be offset, the fit to be loose, or even cause the reinforcing strip to break. Therefore, a folding device for the reinforcing strip of the paper bag opening is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a folding device for the reinforcing strip of a paper bag opening. It aims to improve the problem that if the bag opening is irregularly deformed due to transportation or stacking, or if the reinforcing strip itself is bent, direct folding will lead to the folding position being offset, the fit not being tight, or even the reinforcing strip breaking.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a folding device for reinforcing strips at the mouth of paper bags, comprising a support frame, a connecting plate one fixedly connected to the upper surface of the support frame, a connecting plate two fixedly connected to the outer wall of the connecting plate one, a conveyor belt disposed inside the connecting plate two, a folding block slidably connected to the upper surface of the connecting plate two, a fixing block one fixedly connected to the outer wall of the connecting plate one, a hydraulic cylinder one fixedly connected inside the connecting plate one, and a leveling component disposed at the output end of the hydraulic cylinder one;

[0007] The leveling assembly includes a second fixed block, a connecting frame, a first rotating block, and a third fixed block. The outer wall of the second fixed block is fixedly connected to the output end of the first hydraulic cylinder. The inner wall of the connecting frame is slidably connected to the outer wall of the second fixed block. The outer wall of the first rotating block is rotatably connected to the inner wall of the connecting frame. The inner wall of the third fixed block is rotatably connected to the outer wall of the second rotating block. A leveling block is fixedly connected to the outer wall of the third fixed block. A leveling roller is fixedly connected to the outer wall of the first connecting plate.

[0008] Furthermore, the outer wall of the leveling block is slidably connected to the outer wall of the fixed block, the inner wall of the connecting plate is connected to the hydraulic cylinder and the connecting rod, and the output end of the hydraulic cylinder is fixedly connected to the connecting block.

[0009] Furthermore, a sliding rod is slidably connected inside the connecting rod one, and one end of the sliding rod is fixedly connected to one side of the outer wall of the connecting block two.

[0010] Furthermore, a connecting block 1 is slidably connected to the other side of the outer wall of the connecting block 2, and the outer wall of the connecting block 1 is fixed inside the folded edge block.

[0011] Furthermore, a third connecting block is provided on the upper surface of the first connecting block and the second connecting block, and a button is slidably connected inside the third connecting block.

[0012] Furthermore, a connecting rod two is fixedly connected to the outer wall of the button, and a limit block is fixedly connected to one end of the connecting rod two.

[0013] Furthermore, the outer wall of the limiting block is slidably connected to the inner wall of the connecting block three, and a spring one is fixedly connected to the outer wall of the limiting block.

[0014] Furthermore, the outer wall of the limiting block is slidably connected to the inner walls of connecting block one and connecting block two, and spring two is fixedly connected to the lower surface of connecting block three.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the hydraulic cylinder pushes the fixed block 2, causing the rotating block 1 and the rotating block 2 to rotate at a certain angle, which drives the fixed block 3 to slide. At this time, the fixed block 2 slides in the connecting frame, and the leveling block slides with the fixed block 3 to perform leveling treatment, preventing irregularities at the bag opening and bending of the reinforcing strip, preventing the folding position from shifting and the fit from being loose, which would affect the folding effect later, thereby improving the practicality of the device.

[0017] 2. In this utility model, by pressing down on the connecting block three and squeezing the spring two, and then pressing the button, the connecting rod two causes the limiting block to slide away from the connecting block one and the connecting block two. The spring one is used to automatically restore the position of the limiting block, so the folding block connected to the connecting block one can be removed, and different folding blocks can be quickly replaced. The groove width of different folding blocks can match paper bags of different heights, ensuring accurate folding position, thereby improving the practicality of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a folding device for reinforcing strips at the mouth of a paper bag, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the connecting frame of the folding device for reinforcing strips at the mouth of a paper bag, as proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of the sliding rod part of a folding device for reinforcing strips at the mouth of a paper bag, as proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the three-section structure of the connecting block of the folding device for the reinforcing strip at the mouth of a paper bag, as proposed in this utility model.

[0022] Figure 5 for Figure 4 Enlarged view of point A in the image.

[0023] Legend:

[0024] 1. Support frame; 2. Connecting plate one; 3. Connecting plate two; 4. Conveyor belt; 5. Folding block; 6. Connecting block one; 7. Connecting block two; 8. Leveling roller; 9. Fixing block one; 10. Leveling block; 11. Connecting frame; 12. Hydraulic cylinder one; 13. Rotating block one; 14. Fixing block two; 15. Rotating block two; 16. Fixing block three; 17. Hydraulic cylinder two; 18. Connecting rod one; 19. Sliding rod; 20. Connecting block three; 21. Button; 22. Connecting rod two; 23. Limiting block; 24. Spring one; 25. Spring two. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1-3The present invention provides an embodiment of a paper bag mouth reinforcement strip folding device, including a support frame 1, the support frame 1 supports and fixes a connecting plate 2, the connecting plate 2 fixes a connecting plate 3, and the internal conveyor belt 4 provides stable conveying. The upper surface of the support frame 1 is fixedly connected to the connecting plate 2, the outer wall of the connecting plate 2 is fixedly connected to the connecting plate 3, the connecting plate 2 is provided with a conveyor belt 4 inside, the conveyor belt 4 is the conveying structure of the whole, and conveys the paper bag to the leveling and folding part. The upper surface of the connecting plate 2 is slidably connected to a folding block 5, the outer wall of the connecting plate 2 is fixedly connected to a fixing block 9, the connecting plate 2 is fixedly connected to a hydraulic cylinder 12 inside, and the output end of the hydraulic cylinder 12 is provided with a leveling component.

[0027] The leveling assembly includes a second fixed block 14, a connecting frame 11, a first rotating block 13, and a third fixed block 16. The outer wall of the second fixed block 14 is fixedly connected to the output end of the first hydraulic cylinder 12. The inner wall of the connecting frame 11 is slidably connected to the outer wall of the second fixed block 14. The outer wall of the first rotating block 13 is rotatably connected to the inner wall of the connecting frame 11. Through the cooperation of the first rotating block 13 and the second rotating block 15, the third fixed block 16 drives the leveling block 10 to slide and slide against the first fixed block 9, thereby leveling the bag opening reinforcement strip. The inner wall is rotatably connected to the outer wall of the rotating block 15. The outer wall of the fixed block 16 is fixedly connected to the leveling block 10. The outer wall of the connecting plate 12 is fixedly connected to the leveling roller 8. The leveling roller 8 is used to perform secondary leveling on the bag mouth reinforcement strip that has not been completely leveled, reducing the occurrence of unleveled bag mouth reinforcement strips being transported to the folding stage. The outer wall of the leveling block 10 is slidably connected to the outer wall of the fixed block 19. The connecting plate 12 is internally connected to the hydraulic cylinder 17 and the connecting rod 18. The output end of the hydraulic cylinder 17 is fixedly connected to the connecting block 2 7.

[0028] Reference Figures 1-5 A sliding rod 19 is slidably connected inside the connecting rod 18. One end of the sliding rod 19 is fixedly connected to one side of the outer wall of the connecting block 2 7. The sliding rod 19 cooperates with the connecting block 2 7 and slides inside the connecting rod 18, assisting the hydraulic cylinder 2 17 to prevent unnecessary displacement during sliding. A connecting block 6 is slidably connected to the other side of the outer wall of the connecting block 2 7. The outer wall of the connecting block 6 is fixed inside the folding block 5. The folding block 5 and the connecting block 6 can be disassembled and different folding blocks 5 can be replaced. A connecting block 3 20 is provided on the upper surface of the connecting block 6 and the connecting block 2 7. A button 21 is slidably connected inside the connecting block 3 20. A connecting rod 22 is fixedly connected to the outer wall of the button 21. A limit block 23 is fixedly connected to one end of the connecting rod 22. The limit block 23 makes the connecting block 1 6 and the connecting block 2 7 fit together for stable positioning. The outer wall of the limit block 23 is slidably connected to the inner wall of the connecting block 3 20. A spring 24 is fixedly connected to the outer wall of the limit block 23. The spring 24 makes the limit block 23 automatically return to its original position. The outer wall of the limit block 23 is slidably connected to the inner walls of the connecting block 1 6 and the connecting block 2 7. A spring 25 is fixedly connected to the lower surface of the connecting block 3 20.

[0029] Working principle: When the paper bag mouth reinforcement strip folding device needs to fold the paper bag mouth reinforcement strip, the paper bag is placed into the conveyor belt 4 for clamping and conveying. The support frame 1 and connecting plate 1 2 fix and support other components. Connecting plate 2 3 is used to ensure the normal conveying of the conveyor belt 4. The hydraulic cylinder 1 12 pushes the fixed block 2 14, causing the rotating block 1 13 and rotating block 2 15 to rotate at a certain angle, driving the fixed block 3 16 to slide. At this time, the fixed block 2 14 slides in the connecting frame 11. The leveling block 10 slides with the fixed block 3 16, squeezing the paper bag onto the fixed block 1 9 for leveling, preventing irregularities at the bag mouth and bending of the reinforcement strip, which would affect the subsequent folding effect. The paper bag is conveyed... The conveyor belt 4 delivers the material to the leveling roller 8 for secondary leveling. Then, the hydraulic cylinder 2 17 pushes the connecting block 2 7 and the connecting block 1 6 to drive the folding block 5 for folding. The sliding rod 19 slides inside the connecting rod 1 18 to assist in preventing unnecessary deviation. By pressing the connecting block 3 20 and squeezing the spring 2 25 downwards, and then pressing the button 21, the connecting rod 2 22 drives the limiting block 23 to slide out of the connecting block 1 6 and the connecting block 2 7. The spring 1 24 is used to automatically restore the position of the limiting block 23. The folding block 5 connected to the connecting block 1 6 can then be removed for quick replacement of different folding blocks 5. The groove width of different folding blocks 5 can match paper bags of different heights to ensure accurate folding position.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 paper bag gusset reinforcing strip hemming apparatus comprising a support frame (1) characterised in that: The upper surface of the support frame (1) is fixedly connected to a connecting plate 1 (2), the outer wall of the connecting plate 1 (2) is fixedly connected to a connecting plate 2 (3), the inside of the connecting plate 2 (3) is provided with a conveyor belt (4), the upper surface of the connecting plate 2 (3) is slidably connected to a folding block (5), the outer wall of the connecting plate 1 (2) is fixedly connected to a fixing block 1 (9), the inside of the connecting plate 1 (2) is fixedly connected to a hydraulic cylinder 1 (12), and the output end of the hydraulic cylinder 1 (12) is provided with a leveling component; The leveling assembly includes a second fixed block (14), a connecting frame (11), a first rotating block (13), and a third fixed block (16). The outer wall of the second fixed block (14) is fixedly connected to the output end of the first hydraulic cylinder (12). The inner wall of the connecting frame (11) is slidably connected to the outer wall of the second fixed block (14). The outer wall of the first rotating block (13) is rotatably connected to the inner wall of the connecting frame (11). The inner wall of the third fixed block (16) is rotatably connected to the outer wall of the second rotating block (15). A leveling block (10) is fixedly connected to the outer wall of the third fixed block (16). A leveling roller (8) is fixedly connected to the outer wall of the first connecting plate (2).

2. A paper bag gusset strip flanging apparatus according to claim 1 wherein: The outer wall of the leveling block (10) is slidably connected to the outer wall of the fixed block (9). The inner wall of the connecting plate (2) is connected to the hydraulic cylinder (17) and the connecting rod (18). The output end of the hydraulic cylinder (17) is fixedly connected to the connecting block (7).

3. The folding device for reinforcing strips at the mouth of paper bags according to claim 2, characterized in that: The connecting rod (18) is internally slidably connected to a sliding rod (19), one end of which is fixedly connected to one side of the outer wall of the connecting block (7).

4. The folding device for reinforcing strips at the mouth of paper bags according to claim 3, characterized in that: Connecting block one (6) is slidably connected to the other side of the outer wall of connecting block two (7), and the outer wall of connecting block one (6) is fixed inside the folded edge block (5).

5. The folding device for reinforcing strips at the mouth of paper bags according to claim 4, characterized in that: Connecting block 1 (6) and connecting block 2 (7) are provided with connecting block 3 (20), and a button (21) is slidably connected inside connecting block 3 (20).

6. The folding device for reinforcing strips at the mouth of paper bags according to claim 5, characterized in that: The outer wall of the button (21) is fixedly connected to a connecting rod two (22), and one end of the connecting rod two (22) is fixedly connected to a limit block (23).

7. The folding device for reinforcing strips at the mouth of paper bags according to claim 6, characterized in that: The outer wall of the limiting block (23) is slidably connected to the inner wall of the connecting block three (20), and the outer wall of the limiting block (23) is fixedly connected to the spring one (24).

8. The folding device for reinforcing strips at the mouth of paper bags according to claim 7, characterized in that: The outer wall of the limiting block (23) is slidably connected to the inner wall of the connecting block one (6) and the connecting block two (7), and the lower surface of the connecting block three (20) is fixedly connected to the spring two (25).

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