A plastic bag production line flattening and folding mechanism

Abstract

The utility model provides a kind of plastic bag production line flattening folding mechanism, belong to plastic bag production technical field.This kind of plastic bag production line flattening folding mechanism includes frame and folding adjusting mechanism, the left side of the top of frame outside is equipped with plate body, the inside of plate body is equipped with roll body, folding frame is movably connected in the bottom of frame inside, the top of folding frame inside and the inside of plate body are movably connected with folding plate by shaft rod, screw is movably connected in the bottom of folding plate inside by shaft pin, screw surface is connected with screw seat by setting folding adjusting mechanism, can be folded in guiding to outside plastic bag simultaneously, for user provides the medium of adjusting folding guide angle according to outside plastic bag size, so that user carries out folding guide adjustment operation according to the actual size of outside plastic bag, thus improve the operation convenience and adaptability of frame flattening folding.

Description

Technical Field

[0001] This utility model relates to the field of plastic bag production technology, and more specifically, to a flattening and folding mechanism for a plastic bag production line. Background Technology

[0002] The flattening and folding mechanism is a key piece of equipment in the later stages of plastic bag production. It is mainly used to flatten and fold continuously output film or semi-finished plastic bags, laying the foundation for subsequent cutting, stacking, and packaging processes. Its performance directly affects the appearance flatness and stacking regularity of the finished plastic bags. The flattening and folding mechanism receives film or semi-finished plastic bags from the previous process. First, the flattening roller group eliminates wrinkles through tension adjustment and roller surface extrusion, ensuring that the material is flat and smooth. Then, the flat material enters the folding area and, guided by the guide plate, contacts the folding rollers along a preset trajectory. Fixed creases are formed by the roller pressure. The drive system synchronously adjusts the speed and folding width, and the positioning components ensure folding accuracy. Finally, the material is folded into a regular shape, providing a regular blank for subsequent cutting and stacking. Since the folding angle requirements of plastic bags of different sizes are different, it is necessary to perform flattening and folding adjustment operations.

[0003] In related technologies, during the use of flattening and folding mechanisms, plastic bags are generally flattened and folded by fixedly installed guide plates, so that the plastic bags enter the folding rollers for folding and can then be used.

[0004] However, in the current use of flattening and folding mechanisms, due to the fixed installation of guide plates, it is difficult to flatten and fold plastic bags of different sizes. The guide plates need to be disassembled and adjusted by the staff, which affects the ease of operation and adaptability of flattening and folding. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a flattening and folding mechanism for a plastic bag production line that overcomes or at least partially solves the above technical problems.

[0006] This utility model is implemented as follows:

[0007] This utility model provides a flattening and folding mechanism for a plastic bag production line, including a frame, a plate is installed on the top left side of the frame, and a roller is installed inside the plate.

[0008] Folding adjustment mechanism; the folding adjustment mechanism includes:

[0009] Folding frame; the folding frame is movably connected to the bottom of the inner side of the frame, and the top of the inner side of the folding frame and the inner side of the plate are both movably connected to folding plates via shafts;

[0010] Screw; the screw is movably connected to the bottom of the inner side of the folding plate by a shaft pin, a screw seat is sleeved on the surface of the screw, and a nut located outside the screw seat is threaded on the surface of the screw;

[0011] Adjust the positioning mechanism; the adjustment positioning mechanism is located on the top of the outside of the screw seat.

[0012] In a preferred embodiment, the adjustment and positioning mechanism includes a positioning hole, a positioning shaft, and a positioning bolt. The positioning hole is located on the top of the outer side of the screw seat. The positioning shaft is movably connected inside the positioning hole. The outer side of the positioning shaft is fixedly connected to the inner side of the frame and the folding frame, respectively. The positioning bolt is threadedly connected to the top of the positioning hole.

[0013] In a preferred embodiment, translation holes are provided on both sides of the inner side of the folding frame, and translation columns are movably connected inside the translation holes. The outer side of the translation columns is fixedly connected to the inner side of the frame.

[0014] In a preferred embodiment, a screw hole is provided on the left side of the folding frame, and a stud is connected to the internal thread of the screw hole.

[0015] In a preferred embodiment, a shaft is fixedly connected to the right side of the stud, and a shaft seat is sleeved and connected to the outside of the shaft, with the bottom of the shaft seat fixedly connected to the inside of the frame.

[0016] In a preferred embodiment, a transition roller is mounted on the inner side of the folding frame via a pivot pin, and the transition roller is located at the top of the folding plate.

[0017] In a preferred embodiment, folding openings are provided on both sides of the right side inside the folding frame, and a folding roller located on the bottom right side of the folding plate is installed inside the folding openings via a pivot pin.

[0018] In a preferred embodiment, roller seats are installed on both sides of the inner side of the frame, and clamping rollers located at the bottom of the folding plate are installed on both sides of the inner side of the roller seats.

[0019] The present invention provides a flattening and folding mechanism for a plastic bag production line, the advantages of which include:

[0020] 1. By setting up a folding adjustment mechanism, while guiding the folding of the external plastic bag, the user can adjust the folding guide angle according to the size of the external plastic bag. This allows the user to perform folding guide adjustment operations according to the actual size of the external plastic bag, thus improving the convenience and adaptability of the frame's flattening and folding operation.

[0021] 2. By setting an adjustment and positioning mechanism, a medium can be provided for the thread to connect and fix with the frame and folding frame, avoiding the situation where the screw seat is difficult to maintain stability during operation, which would prevent the screw from being able to adjust the folding plate stably. Therefore, the adjustment stability of the screw and screw seat is improved.

[0022] 3. By setting translation holes and translation columns, the folding frame and the frame can be translated and adjusted to connect and guide the work, avoiding positional deviation of the folding frame during use, thus improving the translation effect of the folding frame. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model;

[0025] Figure 2 A left-side three-dimensional structural diagram of the frame provided for an embodiment of this utility model;

[0026] Figure 3 A schematic diagram of the three-dimensional cross-sectional structure of the folding frame provided for an embodiment of this utility model;

[0027] Figure 4 A schematic diagram of the three-dimensional cross-sectional structure of the screw seat provided for an embodiment of this utility model;

[0028] In the diagram: 1. Frame; 2. Plate; 3. Roller; 4. Folding frame; 5. Folding plate; 6. Screw; 7. Screw seat; 8. Nut; 9. Positioning hole; 10. Positioning shaft; 11. Positioning bolt; 12. Translation hole; 13. Translation column; 14. Screw hole; 15. Screw stud; 16. Shaft handle; 17. Shaft seat; 18. Transition roller; 19. Folding opening; 20. Folding roller; 21. Roller seat; 22. Clamping roller. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Reference Figures 1-4 This utility model provides a technical solution: a flattening and folding mechanism for a plastic bag production line, including a frame 1 and a folding adjustment mechanism. A plate 2 is installed on the left side of the top outer side of the frame 1, and a roller 3 is installed inside the plate 2. While guiding the folding of the external plastic bag, it provides a medium for the user to adjust the folding guide angle according to the size of the external plastic bag, so that the user can perform folding guide adjustment operation according to the actual size of the external plastic bag. Therefore, it improves the convenience and adaptability of the flattening and folding operation of the frame 1.

[0031] Reference Figures 1-4 In a preferred embodiment, the folding adjustment mechanism includes a folding frame 4, which is movably connected to the bottom of the inner side of the frame 1. The top of the inner side of the folding frame 4 and the inner side of the plate 2 are both movably connected to folding plates 5 via shafts. A screw 6 is movably connected to the bottom of the inner side of the folding plates 5 via a pin. A screw seat 7 is sleeved on the surface of the screw 6, and a nut 8 located outside the screw seat 7 is threaded on the surface of the screw 6. An adjustment and positioning mechanism is set on the top of the outside of the screw seat 7. By holding the nut 8 and rotating it, the position between the screw 6 and the screw seat 7 is adjusted, so that the screw 6, through the pin connected to the folding plate 5, applies an angle adjustment to the folding plate 5 and disengages. After the angle of the folding plate 5 is adjusted, the nut 8 is rotated and clamped on the outside of the screw seat 7, so that the screw 6 cooperates with the screw seat 7 and the nut 8 to position and stabilize the folding plate 5 after the angle adjustment.

[0032] The adjustment and positioning mechanism includes a positioning hole 9, a positioning shaft 10, and a positioning bolt 11. The positioning hole 9 is located on the top of the outer side of the screw seat 7. The positioning shaft 10 is movably connected inside the positioning hole 9. The outer side of the positioning shaft 10 is fixedly connected to the inner side of the frame 1 and the folding frame 4, respectively. The positioning bolt 11 is threadedly connected to the top of the positioning hole 9, which can provide a medium for the thread to connect and fix with the frame 1 and the folding frame 4. This avoids the situation where the screw seat 7 is difficult to maintain stability during operation, which would cause the screw 6 to be unable to adjust the folding plate 5 stably. Therefore, the adjustment stability of the screw 6 and the screw seat 7 is improved.

[0033] Reference Figures 2-3In a preferred embodiment, translation holes 12 are provided on both sides of the inner side of the folding frame 4. Translation columns 13 are movably connected inside the translation holes 12. The outer side of the translation columns 13 is fixedly connected to the inner side of the frame 1. This allows for translation adjustment and connection support and guidance between the folding frame 4 and the frame 1, preventing positional deviation of the folding frame 4 during use. This improves the translation effect of the folding frame 4. A screw hole 14 is provided on the left side of the folding frame 4. A stud 15 is threaded inside the screw hole 14, providing a medium for the user to adjust the translation of the folding frame 4 and ensuring thread stability of the adjusted folding frame 4. This prevents the folding frame 4 from being difficult to adjust during operation, thus improving the convenience of translation adjustment of the folding frame 4.

[0034] Reference Figures 2-3 In a preferred embodiment, a shaft handle 16 is fixedly connected to the right side of the stud 15, and a shaft seat 17 is sleeved and connected to the outside of the shaft handle 16. The bottom of the shaft seat 17 is fixedly connected to the inside of the frame 1, which can prevent the stud 15 from being rotated and separated from the frame 1, thus improving the working stability of the stud 15. A transition roller 18 is installed on the inside of the folding frame 4 through a shaft pin. The transition roller 18 is located on the top of the folding plate 5, which can provide rolling support for the external plastic bag passing over the top of the folding frame 4, thus improving the transition effect of the plastic bag in the folding frame 4.

[0035] Reference Figures 2-3 In a preferred embodiment, folding openings 19 are provided on both sides of the right side inside the folding frame 4. Folding rollers 20 located on the bottom right side of the folding plate 5 are installed inside the folding openings 19 via axle pins. This allows the plastic bag that has been flattened and folded by the folding plate 5 inside the folding frame 4 to be folded and turned, thus improving the folding and turning effect of the folding frame 4. Roller seats 21 are installed on both sides of the inner side of the frame 1. Clamping rollers 22 located at the bottom of the folding plate 5 are installed on both sides of the inner side of the roller seats 21. This allows the plastic bag that has been flattened and folded by the folding plate 5 inside the frame 1 to be folded and clamped, so that the plastic bag completes one effective fold, thus improving the folding effect of the frame 1.

[0036] Specifically, the working process or working principle of the flattening and folding mechanism of this plastic bag production line is as follows: When in use, according to the actual size of the external plastic, the hand-held nut 8 is rotated to cooperate with the screw seat 7 through the screw rod 6 to apply an angle adjustment thrust to the folding plate 5. At this time, the shaft pin connecting the screw rod 6 and the folding plate 5 performs rotational connection work between the screw rod 6 and the folding plate 5 to ensure the connection effect between the screw rod 6 and the folding plate 5.

[0037] After the folding guide angle of the folding plate 5 is adjusted, the nut 8 should be rotated to clamp the outside of the screw seat 7, so that the nut 8 cooperates with the screw seat 7 through the screw rod 6 to stabilize the folding plate 5 after the angle adjustment. During this process, the positioning shaft 10 cooperates with the positioning hole 9 and the positioning bolt 11 to stabilize the connection between the screw seat 7 and the frame 1 and the folding frame 4, so as to ensure the stability of the angle adjustment of the folding plate 5 by the screw seat 7.

[0038] Subsequently, by rotating the screw 15 with the screw hole 14, the folding frame 4 is pushed and translated by the screw shaft 16, so that the folding plate 5 inside the folding frame 4 is located at the bottom of the folding plate 5 of the frame 1, preparing for the subsequent work of the two folding plates 5. During this process, the translation column 13 moves inside the translation hole 12 to provide translation support and guidance between the folding frame 4 and the frame 1. At the same time, the shaft seat 17 cooperates with the shaft shaft 16 to provide support and stability between the screw 6 and the frame 1. When the plastic bag enters the frame 1 through the rollers 3 on both sides of the top of the frame 1 and the folding plate 5 at the bottom of the roller 3, since the folding plate 5 is set in an inverted triangle shape, as the plastic bag moves down along the folding plate 5, the plastic bag is flattened, and the bottom of the folding plate 5 applies a guiding force to the bottom of the plastic bag to fold inward. This folding plate 5 can fold the plastic bag for the first time, and the plastic bag passes between the clamping rollers 22. The clamping rollers 22 apply folding force to the plastic bag after the first fold.

[0039] At this time, the plastic bag passes the roller at the bottom front side of the frame 1 and is folded and turned backward once, so that the plastic bag is moved to the top of the folding plate 5 inside the folding frame 4 by the transition roller 18. The plastic bag is then flattened and folded a second time by the folding plate 5 inside the folding frame 4. At this time, the folding roller 20 applies folding pressure to the plastic bag after the second fold. After the plastic bag is flattened and folded by both sides of the folding plate 5, it is moved out of the frame 1 by the roller at the bottom right side of the frame 1 and enters the next station outside for further processing.

Claims

1. A flattening and folding mechanism for a plastic bag production line, comprising a frame (1), a plate (2) mounted on the left side of the top outer side of the frame (1), and a roller (3) mounted inside the plate (2), characterized in that... ； It also includes a folding adjustment mechanism; the folding adjustment mechanism includes: Folding frame (4); The folding frame (4) is movably connected to the bottom of the inner side of the frame (1), and the top of the inner side of the folding frame (4) and the inner side of the plate (2) are movably connected to the folding plate (5) through the shaft. Screw (6); The screw (6) is movably connected to the bottom of the inner side of the folding plate (5) by a shaft pin, and a screw seat (7) is sleeved on the surface of the screw (6), and a nut (8) located outside the screw seat (7) is threaded on the surface of the screw (6). Adjust the positioning mechanism; the adjustment positioning mechanism is located on the top of the outside of the screw seat (7).

2. The flattening and folding mechanism for a plastic bag production line according to claim 1, characterized in that, The adjustment and positioning mechanism includes a positioning hole (9), a positioning shaft (10), and a positioning bolt (11). The positioning hole (9) is opened on the top of the outside of the screw seat (7). The positioning shaft (10) is movably connected inside the positioning hole (9). The outside of the positioning shaft (10) is fixedly connected to the inside of the frame (1) and the folding frame (4) respectively. The positioning bolt (11) is threadedly connected to the top of the positioning hole (9).

3. A flattening and folding mechanism for a plastic bag production line according to claim 1 or 2, characterized in that, The folding frame (4) has translation holes (12) on both sides of its inner side. The translation holes (12) are movably connected to translation columns (13). The outer side of the translation columns (13) is fixedly connected to the inner side of the frame (1).

4. The flattening and folding mechanism for a plastic bag production line according to claim 3, characterized in that, The left side of the folding frame (4) has a screw hole (14), and the screw hole (14) is threaded with a stud (15).

5. The flattening and folding mechanism for a plastic bag production line according to claim 4, characterized in that, A shaft handle (16) is fixedly connected to the right side of the stud (15), and a shaft seat (17) is sleeved and connected to the outside of the shaft handle (16). The bottom of the shaft seat (17) is fixedly connected to the inside of the frame (1).

6. The flattening and folding mechanism for a plastic bag production line according to claim 1, characterized in that, A transition roller (18) is mounted on the inner side of the folding frame (4) via a pivot pin, and the transition roller (18) is located on the top of the folding plate (5).

7. The flattening and folding mechanism for a plastic bag production line according to claim 1, characterized in that, Folding openings (19) are provided on both sides of the right side inside the folding frame (4). A folding roller (20) located on the bottom right side of the folding plate (5) is installed inside the folding opening (19) by means of a pivot pin.

8. The flattening and folding mechanism for a plastic bag production line according to claim 1, characterized in that, Roller seats (21) are installed on both sides of the inner side of the frame (1), and clamping rollers (22) located at the bottom of the folding plate (5) are installed on both sides of the inner side of the roller seats (21).

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