Packaging film conveying mechanism

Abstract

The utility model provides a packaging film conveying mechanism, which belongs to the technical field of packaging film conveying, and comprises a base station, two sliding seats which move linearly in opposite directions are arranged in the base station, the front side and the rear side of each sliding seat are integrally connected with connecting blocks, and the other ends of the connecting blocks are fixedly connected with fixing plates I; a traction roller is rotationally installed between the two first fixing plates, a two-way lead screw is rotationally connected into the base table, a handle is rotationally installed on the left side of the base table, the handle is fixed to the end of the two-way lead screw, and the two sliding bases are in threaded connection to the outer portion of the two-way lead screw and symmetrically distributed with the center of the two-way lead screw. According to the device, the two-way lead screw is driven to rotate by rotating the handle, the two sliding seats in external threaded connection do reverse linear movement through the reverse thread design, then the traction rollers on the two sides are driven to do reverse movement through the connecting blocks, and the two traction rollers can be adjusted to the proper distance so that the packaging film can be subjected to uniform tension during conveying.

Description

Technical Field

[0001] This utility model relates to the field of packaging film conveying technology, and in particular to a packaging film conveying mechanism. Background Technology

[0002] A packaging film conveying mechanism is a mechanical device used to convey packaging film during the packaging process. Its main function is to smoothly and continuously transport the packaging film from the roll or other supply source to the packaging position for product packaging.

[0003] In actual use, the following shortcomings were found in this device:

[0004] For example, in the existing document protection film transmission mechanism (CN218931213U), when the device is started, the rear end of the film is subjected to force, and the front end drives the first moving rod and the second moving rod to move in opposite directions under the action of tension, thereby realizing the buffering of the film tensioning process. This effectively avoids the situation where the film is suddenly pulled and the two ends of the film are subjected to instantaneous force, resulting in the film being torn off instantly, thus improving the safety of the film.

[0005] As shown in the above literature, current film conveying devices generally adopt a design in which multiple traction rollers and guide rollers work together. In this type of device, the traction rollers on both sides are usually fixed to the mounting frame, resulting in a constant distance between the two traction rollers. This fixed distance design has certain limitations when laying packaging film, namely, it is difficult to adjust the conveying tension of the packaging film by flexibly adjusting the distance between the two traction rollers.

[0006] Therefore, this application provides a packaging film transport mechanism to meet the requirements. Utility Model Content

[0007] The purpose of this utility model is to solve the problems existing in the above-mentioned background technology and to propose a packaging film transport mechanism.

[0008] The technical problem to be solved by this utility model is to provide a packaging film conveying mechanism to solve the problem that the spacing of the traction rollers in the existing conveying mechanism cannot be adjusted.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0010] A packaging film conveying mechanism includes a base, inside which are arranged two sliding seats that move linearly in opposite directions. Connecting blocks are integrally connected to the front and rear sides of each sliding seat. A fixing plate is fixedly connected to the other end of each connecting block. A traction roller is rotatably installed between the two fixing plates.

[0011] Preferably, a bidirectional lead screw is rotatably connected inside the base, and a handle is rotatably installed on the left side of the base, with the handle fixed to the end of the bidirectional lead screw.

[0012] Preferably, both sliding seats are threaded to the outside of the bidirectional lead screw and are symmetrically distributed at the center of the bidirectional lead screw.

[0013] Preferably, the base has two fixed rods fixed inside, the two fixed rods are located on both sides of the bidirectional lead screw, and the sliding seats are slidably installed on the outside of the two fixed rods.

[0014] Preferably, the base has movable grooves on both the front and rear sides, and the connecting blocks move linearly within the movable grooves.

[0015] Preferably, a fixing box is fixedly installed on the left side of the base, and a sliding box is fitted and pulled out inside the fixing box.

[0016] Preferably, the inner wall of the sliding box and the fixed box are connected by a spring.

[0017] Preferably, an operating block is provided above the sliding box, and a second movable groove is provided above the fixed box, and the operating block moves laterally in the second movable groove.

[0018] Preferably, the sliding box has a positioning block at one end near the handle, and the surface of the positioning block has a second connection hole. Multiple positioning blocks are arranged in a ring at equal intervals on the outer side of the handle, and the surface of each positioning block has a first connection hole. The positioning block is inserted into the positioning block under the action of a spring, and the angle of the handle is fixed by bolts to the first and second connection holes.

[0019] Preferably, a second fixing plate is welded to the middle of the front and rear sides of the base, and a guide rod is rotatably installed between the two fixing plates.

[0020] In the above scheme, the bidirectional lead screw is rotated by turning the handle. The reverse thread design causes the two sliding seats connected by the external thread to move in opposite linear directions. Then, the connecting block drives the traction rollers on both sides to move in opposite directions. The two traction rollers can be adjusted to a suitable distance so that the packaging film is subjected to uniform tension during transportation.

[0021] In the above scheme, after the handle is adjusted, the sliding box moves toward the handle under the rebound of the spring, and the positioning block on one side of the sliding box will be inserted into the positioning block on the surface of the handle. At this time, the first connecting hole and the second connecting hole are aligned, and the handle angle can be fixed by connecting the bolt into the hole, which is convenient to operate. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the base in this utility model;

[0025] Figure 3 This is a schematic diagram of the sliding seat structure in this utility model;

[0026] Figure 4 In this utility model Figure 1 A magnified structural diagram at point A;

[0027] Figure 5 This is a schematic diagram of the disassembled structure of the fixed box and the sliding box in this utility model.

[0028] [Figure Labels]

[0029] 1. Base; 2. Fixing plate one; 3. Fixing plate two; 4. Traction roller; 5. Guide rod; 6. Handle; 7. Two-way lead screw; 8. Fixing rod; 9. Sliding seat; 10. Movable groove one; 11. Connecting block; 12. Positioning block; 13. Connecting hole one; 14. Fixing box; 15. Sliding box; 16. Spring; 17. Movable groove two; 18. Operating block; 19. Positioning insert; 20. Connecting hole two.

[0030] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0031] 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.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] like Figure 1-5 The packaging film conveying mechanism shown in this embodiment of the present invention includes a base 1. Two horizontally movable fixed plates 2 are provided on the front and rear sides of the base 1. A traction roller 4 is rotatably mounted between the two fixed plates 2, so that the distance between the two traction rollers 4 can be flexibly adjusted, and the tension of the packaging film can be better adjusted when laying the packaging film.

[0034] Specifically, such as Figure 1 As shown, a fixing plate 2 3 is welded to the middle of the front and rear sides of the base 1, and a guide rod 5 is rotatably installed between the two fixing plates 2 3.

[0035] Therefore, the packaging film is pulled by two traction rollers 4, and the guide rod 5 ensures the stability of the packaging film conveying and maintains a certain tension.

[0036] Specifically, such as Figure 2 As shown, a bidirectional lead screw 7 is rotatably connected inside the base 1, and two sliding seats 9 are connected to the external threads of the bidirectional lead screw 7.

[0037] Furthermore, the two sliding seats 9 are symmetrically distributed around the center of the bidirectional lead screw 7.

[0038] Meanwhile, a handle 6 is rotatably installed on the left side of the base 1, and the handle 6 is fixed to the end of the bidirectional lead screw 7.

[0039] Therefore, by rotating the double-acting lead screw 7 through the handle 6, the two external sliding seats 9 move in opposite linear directions around the center of the double-acting lead screw 7 due to the reverse thread design.

[0040] Furthermore, two fixed rods 8 are fixedly connected inside the base 1, and two sliding seats 9 are slidably mounted on the outside of the two fixed rods 8. The two fixed rods 8 can maintain the stability of the linear movement of the sliding seats 9.

[0041] Specifically, such as Figure 3 As shown, connecting blocks 11 are integrally connected to both the front and rear sides of the sliding seat 9.

[0042] And, as Figure 2 As shown, movable grooves 10 are provided on both the front and rear sides of the base 1. Connecting blocks 11 are located in the movable grooves 10 and move with the sliding seat 9. The other end of the connecting block 11 is connected to the fixed plate 2, thereby driving the traction roller 4 to move synchronously.

[0043] Specifically, such as Figure 4 As shown, the handle 6 has multiple positioning blocks 12 arranged in a ring at equal intervals on its outer side, and each positioning block 12 has a connecting hole 13 on its surface.

[0044] Specifically, such as Figure 4-5 As shown, a fixed box 14 is fixedly installed on the left side of the base 1. A sliding box 15 is fitted inside the fixed box 14 and pulled out. The sliding box 15 is connected to the inner wall of the fixed box 14 by a spring 16.

[0045] Furthermore, an operation block 18 is provided above the sliding box 15, and a movable groove 17 is provided above the fixed box 14, in which the operation block 18 moves in a fitting manner.

[0046] Furthermore, the sliding box 15 is connected to a positioning plug 19 at one end near the handle 6, wherein the surface of the positioning plug 19 is provided with a connection hole 20.

[0047] In this embodiment, under the rebound action of the spring 16, the positioning insert 19 can be inserted into the positioning block 12, thereby fixing the handle 6 once.

[0048] At this time, the connecting hole 13 on the surface of the positioning block 12 is aligned with the connecting hole 20 on the surface of the positioning insert block 19, and the connecting bolt is inserted into the hole to fix the handle 6 for a second time to prevent the handle 6 from rotating.

[0049] During operation, first pull the operating block 18 to push the sliding box 15 into the fixed box 14, which compresses the spring 16. Then, turn the handle 6 to adjust the distance between the two traction rollers 4.

[0050] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0051] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A packaging film transport mechanism, characterized in that, include: The base (1) has two sliding seats (9) that move in opposite directions. The front and rear sides of the sliding seats (9) are integrally connected with connecting blocks (11). The other end of the connecting blocks (11) is fixedly connected with a fixing plate (2). A traction roller (4) is rotatably installed between the two fixing plates (2).

2. The packaging film conveying mechanism according to claim 1, characterized in that: The base (1) is rotatably connected to a bidirectional lead screw (7), and a handle (6) is rotatably installed on the left side of the base (1). The handle (6) is fixed to the end of the bidirectional lead screw (7).

3. The packaging film conveying mechanism according to claim 1, characterized in that: Both sliding seats (9) are threaded to the outside of the bidirectional lead screw (7) and symmetrically distributed at the center of the bidirectional lead screw (7).

4. The packaging film conveying mechanism according to claim 1, characterized in that: The base (1) is fixed with two fixed rods (8) inside. The two fixed rods (8) are located on both sides of the bidirectional lead screw (7), and the sliding seat (9) is slidably installed on the outside of the two fixed rods (8).

5. The packaging film conveying mechanism according to claim 1, characterized in that: The base (1) has movable slots (10) on both the front and rear sides, and the connecting blocks (11) move linearly in the movable slots (10).

6. The packaging film conveying mechanism according to claim 1, characterized in that: A fixed box (14) is fixedly installed on the left side of the base (1), and a sliding box (15) is fitted and pulled out inside the fixed box (14).

7. The packaging film conveying mechanism according to claim 6, characterized in that: The inner walls of the sliding box (15) and the fixed box (14) are connected by a spring (16).

8. The packaging film conveying mechanism according to claim 6, characterized in that: An operating block (18) is provided above the sliding box (15), and an active groove (17) is provided above the fixed box (14), and the operating block (18) moves laterally in the active groove (17).

9. The packaging film conveying mechanism according to claim 6, characterized in that: The sliding box (15) has a positioning block (19) at one end near the handle (6). The surface of the positioning block (19) has a second connection hole (20). Multiple positioning blocks (12) are arranged in a ring at equal intervals on the outer side of the handle (6). The surface of each positioning block (12) has a first connection hole (13). The positioning block (19) is inserted into the positioning block (12) under the action of the spring (16) and is connected to the first connection hole (13) and the second connection hole (20) by bolts to fix the angle of the handle (6).

10. The packaging film conveying mechanism according to claim 1, characterized in that: The base (1) has two fixing plates (3) welded to the middle of the front and rear sides, and a guide rod (5) is rotatably installed between the two fixing plates (3).

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