A plastic film flatness holding device

Abstract

This utility model relates to a plastic film flattening and holding device, belonging to the field of plastic film processing technology. It includes a worktable and two first support plates fixedly connected to the top of the worktable. A tensioning and flattening mechanism for flattening the plastic film is arranged between the two first support plates. The tensioning and flattening mechanism includes a tensioning roller rotatably connected between the two first support plates. A rotating plate is rotatably connected to the front of the first support plates, and a transmission gear is fixedly connected to the front of the rotating plate. This plastic film flattening and holding device uses an electric push rod to drive a rack to move up and down. The rack then drives the transmission gear and the rotating plate to rotate simultaneously. At this time, the rotating plate can simultaneously rotate the two tensioning rollers, thereby tensioning and flattening the plastic film, achieving a good flattening effect. It also allows the plastic film to be conveyed, improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of plastic film processing technology, specifically a plastic film flatness maintenance device. Background Technology

[0002] Plastic film is a thin sheet material made from high molecular polymers (such as polyethylene PE, polypropylene PP, and polyvinyl chloride PVC) through processes such as blow molding and casting. It is lightweight, transparent, flexible, and waterproof. Due to the adjustability of its material properties, plastic film plays the role of "functional carrier" and "performance optimizer" in various industries, and its application boundaries continue to expand with advancements in materials technology.

[0003] A flatness-maintaining device is needed in the plastic film processing. Chinese Utility Model Patent CN218453210U discloses an aluminum-plastic film flatness-maintaining device and an aluminum-plastic film packaging device. This utility model's aluminum-plastic film flatness-maintaining device is used to maintain the local flatness of the aluminum-plastic film during the heat sealing process. The device mainly includes a support body and two clamping plates. The support body has a feeding motion that moves closer to or away from the aluminum-plastic film due to a drive. The two clamping plates are slidably mounted on the support body and have opposing clamping planes, and also move closer to or away from each other due to a drive. This utility model's aluminum-plastic film flatness-maintaining device can clamp and flatten local unevenness of the aluminum-plastic film, effectively maintain the local flatness of the film, and has high flattening efficiency and good performance.

[0004] However, this utility model cannot stretch the plastic film during use; it only uses clamps to clamp and flatten it. After clamping, the plastic film cannot be conveyed, which affects the actual processing effect of the plastic film and cannot meet production needs. Therefore, a plastic film flattening and holding device is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a plastic film flattening and holding device, which has the advantage of good flattening effect. It solves the problem that existing flattening devices cannot stretch the plastic film, and only use clamps to clamp and flatten it. After clamping, the plastic film cannot be conveyed, which affects the actual processing effect of the plastic film and cannot meet production needs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plastic film flattening and holding device, comprising a worktable and two first support plates fixedly connected to the top of the worktable, wherein a tensioning and flattening mechanism capable of flattening the plastic film is provided between the two first support plates.

[0007] The tensioning and leveling mechanism includes a tensioning roller rotatably connected between two first support plates. A rotating plate is rotatably connected to the front of the first support plate. A transmission gear is fixedly connected to the front of the rotating plate. An electric push rod is fixedly connected to the top of the worktable. A rack that meshes with the transmission gear is fixedly connected to the output end of the electric push rod.

[0008] Furthermore, the back of the rotating plate is fixedly connected to a mounting block extending to the back of the first support plate, the front of the tensioning roller is rotatably connected to the mounting block, and the interior of both first support plates is provided with limiting grooves adapted to the mounting blocks.

[0009] Furthermore, there are two tensioning rollers, which are symmetrically distributed between the two first support plates.

[0010] Furthermore, a second support plate is fixedly connected to both the front and back of the top of the workbench, and a fixed roller is rotatably connected between the two second support plates.

[0011] Furthermore, a positioning guide rod is fixedly connected inside the second support plate, and a positioning sleeve is slidably connected outside the positioning guide rod. A support spring is fixedly connected between the positioning sleeve and the second support plate.

[0012] Furthermore, a movable roller is provided between the two second support plates, and a connecting block is fixedly connected to the side of the positioning sleeve near the movable roller. The connection between the connecting block and the movable roller is a rotatable connection.

[0013] Furthermore, a mounting frame is fixedly connected to the top of the workbench, and a threaded rod extending into the top of the mounting frame is threadedly connected to it. A support frame is rotatably connected to the bottom end of the threaded rod, and positioning rollers are rotatably connected to the interior of both the support frame and the mounting frame.

[0014] Furthermore, a rotating handle is fixedly connected to the top of the threaded rod, and positioning blocks extending into the interior of the mounting frame are fixedly connected to both the front and back of the support frame. A positioning groove adapted to the positioning block is provided on the inner wall of the mounting frame.

[0015] Compared with the prior art, this utility model provides a plastic film flatness maintaining device, which has the following features:

[0016] Beneficial effects:

[0017] 1. This plastic film flattening and holding device uses an electric push rod to drive a rack to move up and down. The rack then drives a transmission gear and a rotating plate to rotate simultaneously. The rotating plate can simultaneously rotate two tensioning rollers, thereby tensioning and flattening the plastic film, achieving a good flatness effect. It also enables the plastic film to be conveyed, improving the practicality of the device.

[0018] 2. This plastic film flattening and holding device, through the setting of positioning guide rods and positioning sleeves, and the setting of support springs, enables the positioning sleeves to move elastically. At the same time, by setting connecting blocks and movable rollers, it can compensate for the tension of the plastic film during the conveying process, ensuring the smoothness of the entire conveying process. It solves the problem that existing flattening devices cannot handle the stretching of the plastic film, and only use clamping plates to clamp and flatten it. After clamping, the plastic film cannot be conveyed, which affects the actual processing effect of the plastic film and cannot meet the production needs. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0020] Figure 2 This is a three-dimensional view of the tensioning roller of this utility model;

[0021] Figure 3 This is a side view of the structure of the movable roller of this utility model;

[0022] Figure 4 This is a three-dimensional structural view of the mounting bracket of this utility model.

[0023] In the diagram: 1. Workbench; 2. First support plate; 3. Tensioning roller; 4. Rotating plate; 5. Transmission gear; 6. Electric push rod; 7. Rack; 8. Limiting groove; 9. Second support plate; 10. Positioning guide rod; 11. Positioning sleeve; 12. Support spring; 13. Movable roller; 14. Connecting block; 15. Fixed roller; 16. Mounting frame; 17. Threaded rod; 18. Support frame; 19. Positioning roller. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1 to 2A plastic film flattening and holding device in this embodiment includes a worktable 1 and two first support plates 2 fixedly connected to the top of the worktable 1. A tensioning and flattening mechanism capable of flattening the plastic film is provided between the two first support plates 2. The tensioning and flattening mechanism includes a tensioning roller 3 rotatably connected between the two first support plates 2. A rotating plate 4 is rotatably connected to the front of the front first support plate 2. A transmission gear 5 is fixedly connected to the front of the rotating plate 4. An electric push rod 6 is fixedly connected to the top of the worktable 1. A rack 7 that meshes with the transmission gear 5 is fixedly connected to the output end of the electric push rod 6.

[0026] Specifically, the back of the rotating plate 4 is fixedly connected to the mounting block extending to the back of the first support plate 2, the front of the tensioning roller 3 is rotatably connected to the mounting block, and the interior of both first support plates 2 is provided with limiting grooves 8 that are adapted to the mounting blocks. There are two tensioning rollers 3, which are symmetrically distributed between the two first support plates 2.

[0027] It should be noted that a controller is fixedly connected to the front of the workbench 1. The electric push rod 6 drives the rack 7 to move up and down. The rack 7 can drive the transmission gear 5 and the rotating plate 4 to rotate simultaneously. At this time, the rotating plate 4 can rotate the two tensioning rollers 3 at the same time, thereby tensioning the plastic film and smoothing it, achieving a good smoothing effect on the plastic film.

[0028] Please see Figure 1 and Figure 3 In this embodiment, a second support plate 9 is fixedly connected to both the front and back sides of the top of the workbench 1. A fixed roller 15 is rotatably connected between the two second support plates 9. A positioning guide rod 10 is fixedly connected inside the second support plate 9. A positioning sleeve 11 is slidably connected to the outside of the positioning guide rod 10. A support spring 12 is fixedly connected between the positioning sleeve 11 and the second support plate 9.

[0029] Specifically, a movable roller 13 is provided between the two second support plates 9, and a connecting block 14 is fixedly connected to the side of the positioning sleeve 11 near the movable roller 13. The connection between the connecting block 14 and the movable roller 13 is a rotatable connection.

[0030] It should be noted that each of the two second support plates 9 has a movable groove on one side that matches the connecting block 14. By setting the positioning guide rod 10 and the positioning sleeve 11, and by setting the support spring 12, the positioning sleeve 11 can move elastically. At the same time, by setting the connecting block 14 and the movable roller 13, the tension of the plastic film can be compensated during the plastic film conveying process, ensuring the smoothness of the entire conveying process.

[0031] Please see Figure 1 and Figure 4In this embodiment, a mounting frame 16 is fixedly connected to the top of the workbench 1. A threaded rod 17 extending into the top of the mounting frame 16 is threadedly connected to the top of the mounting frame 16. A support frame 18 is rotatably connected to the bottom end of the threaded rod 17. Positioning rollers 19 are rotatably connected to the interior of both the support frame 18 and the mounting frame 16. A rotating handle is fixedly connected to the top end of the threaded rod 17. Positioning blocks extending into the interior of the mounting frame 16 are fixedly connected to the front and back of the support frame 18. Positioning grooves that are adapted to the positioning blocks are provided on the inner wall of the mounting frame 16.

[0032] Specifically, by rotating the rotating handle to drive the threaded rod 17 to rotate, the support frame 18 can be raised and lowered for adjustment, which in turn facilitates the adjustment of the distance between the two positioning rollers 19 and facilitates the positioning of the plastic film.

[0033] The working principle of the above embodiments is as follows:

[0034] When the plastic film needs to be conveyed, the electric push rod 6 can be activated to drive the rack 7 to move downward. At this time, the rack 7 will drive the transmission gear 5 and the rotating plate 4 to rotate clockwise at the same time. Simultaneously, the two tensioning rollers 3 will also rotate clockwise, thereby tensioning the plastic film. As the tension increases, the plastic film will be stretched, thus achieving a flat effect. Afterward, the operator can rotate the rotating handle to drive the threaded rod 17 to rotate, which will drive the support frame 18 to move downward, so that the two positioning rollers 19 can position the plastic film and improve the conveying stability.

[0035] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0036] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element 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 application.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic film flatness holding device, comprising a workbench (1) and two first support plates (2) fixedly connected to the top of the workbench (1), characterized in that: A tensioning and flattening mechanism capable of flattening the plastic film is provided between the two first support plates (2); The tensioning and leveling mechanism includes a tensioning roller (3) rotatably connected between two first support plates (2), a rotating plate (4) rotatably connected to the front of the first support plate (2), a transmission gear (5) fixedly connected to the front of the rotating plate (4), an electric push rod (6) fixedly connected to the top of the worktable (1), and a rack (7) meshing with the transmission gear (5) fixedly connected to the output end of the electric push rod (6).

2. A film flatness holding device according to claim 1, characterized in that: The back of the rotating plate (4) is fixedly connected to an installation block extending to the back of the first support plate (2), and the front of the tensioning roller (3) is rotatably connected to the installation block. The interior of both first support plates (2) is provided with a limiting groove (8) that is adapted to the installation block.

3. The film flatness holding device according to claim 1, wherein: The number of tensioning rollers (3) is two, and the two tensioning rollers (3) are symmetrically distributed between the two first support plates (2).

4. The film flatness holding device according to claim 1, wherein: The workbench (1) has a second support plate (9) fixedly connected to both the front and back sides of the top, and a fixed roller (15) is rotatably connected between the two second support plates (9).

5. A film flatness holding device according to claim 4, wherein: The second support plate (9) is internally fixedly connected to a positioning guide rod (10), and the positioning guide rod (10) is externally slidably connected to a positioning sleeve (11). A support spring (12) is fixedly connected between the positioning sleeve (11) and the second support plate (9).

6. A film flatness holding device according to claim 5, wherein: A movable roller (13) is provided between the two second support plates (9). A connecting block (14) is fixedly connected to the side of the positioning sleeve (11) near the movable roller (13). The connection between the connecting block (14) and the movable roller (13) is a rotatable connection.

7. The film flatness holding device according to claim 1, wherein: The top of the workbench (1) is fixedly connected to a mounting bracket (16), and the top of the mounting bracket (16) is threadedly connected to a threaded rod (17) extending into it. The bottom end of the threaded rod (17) is rotatably connected to a support frame (18), and both the support frame (18) and the mounting bracket (16) are rotatably connected to positioning rollers (19).

8. A film flatness holding device according to claim 7, wherein: The top end of the threaded rod (17) is fixedly connected to a rotating handle. The front and back sides of the support frame (18) are both fixedly connected to positioning blocks extending into the interior of the mounting frame (16). The inner wall of the mounting frame (16) is provided with positioning grooves that are compatible with the positioning blocks.

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