Anti-separation film device

By designing an anti-breakage film device, a triangular path is formed by combining conveying rollers, leveling rollers, and tensioning rollers inside the protective box. This adjusts the tension force and solves the problem of the packaging film breaking due to excessive tension during tobacco transportation. It also enables stable film winding and adapts to packaging requirements of different thicknesses.

CN224546508UActive Publication Date: 2026-07-24SHAANXI TOBACCO CO YULIN CITY CO LOGISTICS BRANCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAANXI TOBACCO CO YULIN CITY CO LOGISTICS BRANCH
Filing Date
2025-09-05
Publication Date
2026-07-24

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    Figure CN224546508U_ABST
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Abstract

The utility model discloses a prevent film device, the utility model relates to tobacco logistics technical field. The prevent film device, through setting up guide roller, tightener and movable block etc. when the packaging film output, need to pass through the protection box to form triangular transmission path between guide roller and tightener, make tightener load the tightness of packaging film, utilize the lift activity of movable block, the tightness is adjusted conveniently, prevent the packaging film from being pulled apart, realize the protection of prevent film, guarantee the follow -up packaging work, through setting up conveying roller, flattening roller and adjusting assembly etc. in the packaging film output process, the speed of conveying is controlled through conveying roller, and flattening roller and conveying roller clamp the packaging film, avoid the packaging film loose in the conveying process, adjust the height of flattening roller through adjusting assembly simultaneously, convenient adaptation different thickness's film, improved practicality.
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Description

Technical Field

[0001] This utility model relates to the field of tobacco logistics technology, specifically to a membrane breakage prevention device. Background Technology

[0002] In tobacco transportation, tobacco is generally packaged in directional packaging boxes, and during packaging, packaging film is used to wrap and wrap the package, which makes the package more secure and neat, and also has a good waterproof effect. The packaging film used is generally plastic film, such as films made of vinyl chloride, polyethylene, polypropylene, polystyrene, and other resins.

[0003] Most existing logistics packaging is automated, where the packaging film is conveyed by a feeding device and then wrapped around the surface of the tobacco box. During the conveying of the packaging film, a certain tension needs to be maintained to facilitate wrapping the tobacco box. However, when the tension is too high, the packaging film is prone to breakage, affecting the overall packaging work. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an anti-tear film device, which solves the problem of packaging film tearing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-film breakage device, comprising a protective box, a feeding frame fixedly connected to the upper left side of the protective box, a conveying roller installed at the lower inner end of the feeding frame, a conveying motor installed at the front end of the feeding frame, a leveling roller installed at the upper inner end of the feeding frame, an adjusting component installed at the upper end of the feeding frame, a guide roller installed at the right inner end of the protective box, and a tensioning roller installed at the lower inner end of the protective box. The front and rear ends of the tensioning roller are movably connected to the protective box via an elastic component.

[0006] Preferably, the feeding frame has a U-shaped structure design, both the front and rear ends of the conveying roller are rotatably connected to the feeding frame, the front end of the conveying roller is fixedly connected to the output end of the conveying motor, and a rubber pad is provided on the surface of the conveying roller.

[0007] Preferably, a connecting frame is installed on the outer side of the leveling roller, and the connecting frame is rotatably connected to the front and rear ends of the leveling roller, and the leveling roller has a smooth surface.

[0008] Preferably, the adjusting assembly includes a threaded rod, an adjusting handle, and a guide rod. The upper end of the feed rack is threadedly connected to the threaded rod, and the lower end of the threaded rod extends to the inner side of the feed rack and is rotatably connected to the connecting frame via a bearing. The upper end of the threaded rod is fixedly connected to the adjusting handle. Guide rods are slidably connected to both the front and rear sides of the upper end of the feed rack, and the lower ends of the guide rods extend to the inner side of the feed rack and are fixedly connected to the upper end of the connecting frame.

[0009] Preferably, there are two guide rollers symmetrically arranged about the vertical center line of the protective box, and the two guide rollers and the tensioning roller are distributed in a triangular structure, with the upper end face of the guide roller and the upper end face of the conveying roller being flush with each other.

[0010] Preferably, the elastic component includes a movable groove, a movable block, a guide groove, a slider, and a connecting spring. Movable grooves are provided on both the front and rear sides of the protective box. A movable block is provided in the movable groove. Guide grooves are provided on both the left and right ends of the inner side of the movable groove. A slider is fixedly connected to both the left and right ends of the movable block. A connecting spring is fixedly connected to both the upper and lower ends of the movable block.

[0011] Preferably, the guide groove and the slider are slidably connected, the ends of the two connecting springs away from the movable blocks are fixedly connected to the protective box, and the two movable blocks are rotatably connected to the front and rear ends of the tensioning roller, respectively.

[0012] Beneficial effects

[0013] This invention provides an anti-breakage device for the membrane. Compared with the prior art, it has the following advantages:

[0014] 1. This anti-breakage film device, by setting guide rollers, tension rollers, and movable blocks, requires the packaging film to pass through a protective box when it is output, thus forming a triangular conveying path between the guide rollers and the tension rollers. This allows the tension rollers to bear the tension force of the packaging film, and the movable blocks can be used to adjust the tension force by lifting and lowering, preventing the packaging film from being torn and achieving anti-breakage protection, thus ensuring the subsequent packaging work.

[0015] 2. This anti-film breakage device, by setting up conveyor rollers, leveling rollers and adjusting components, controls the conveying speed through the conveyor rollers during the packaging film output process, and the leveling rollers and conveyor rollers clamp the packaging film to prevent it from loosening during the conveying process. At the same time, the height of the leveling rollers can be adjusted through the adjusting components to accommodate films of different thicknesses, thus improving practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the feeding rack of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the protective box of this utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the protective box of this utility model.

[0020] In the diagram: 1. Protective box; 2. Feed rack; 3. Conveyor roller; 4. Conveyor motor; 5. Leveling roller; 51. Connecting frame; 6. Adjusting component; 61. Threaded rod; 62. Adjusting handle; 63. Guide rod; 7. Guide roller; 8. Tensioning roller; 9. Elastic component; 91. Movable groove; 92. Movable block; 93. Guide groove; 94. Slider; 95. Connecting spring. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: an anti-film breakage device, including a protective box 1, a feeding rack 2 fixedly connected to the left side of the upper end of the protective box 1, a conveying roller 3 installed at the lower end of the inner side of the feeding rack 2, a conveying motor 4 set at the front end of the feeding rack 2, the feeding rack 2 having a U-shaped structure design, the front and rear ends of the conveying roller 3 being rotatably connected to the feeding rack 2, the front end of the conveying roller 3 being fixedly connected to the output end of the conveying motor 4, a rubber pad being provided on the surface of the conveying roller 3, a leveling roller 5 being set at the upper end of the inner side of the feeding rack 2, a connecting frame 51 being installed on the outer side of the leveling roller 5, the connecting frame 51 being rotatably connected to the front and rear ends of the leveling roller 5, the leveling roller 5 having a smooth surface, in conveying the packaging film, the packaging film enters the protective box 1 through the feeding rack 2, thereby the conveying roller 3 adhering to the film, the conveying motor 4 drives the conveying roller 3 to rotate, driving the movement of the film, facilitating control of the speed of the packaging film, and at the same time using the leveling roller 5 to smooth the film, increasing the flatness of the packaging film conveying;

[0023] An adjustment assembly 6 is provided at the upper end of the feeding rack 2. The adjustment assembly 6 includes a threaded rod 61, an adjustment handle 62, and a guide rod 63. The upper end of the feeding rack 2 is threadedly connected to the threaded rod 61. The lower end of the threaded rod 61 extends to the inner side of the feeding rack 2 and is rotatably connected to the connecting frame 51 via a bearing. The upper end of the threaded rod 61 is fixedly connected to the adjustment handle 62. The front and rear sides of the upper end of the feeding rack 2 are slidably connected to the guide rod 63. The lower end of the guide rod 63 extends to the inner side of the feeding rack 2 and is fixedly connected to the upper end of the connecting frame 51. By rotating the adjustment handle 62, the threaded rod 61 can be rotated, which can drive the connecting frame 51 to move up and down, adjust the distance between the leveling roller 5 and the conveying roller 3, and thus adapt to packaging films of different thicknesses.

[0024] A guide roller 7 is installed on the right end of the inner side of the protective box 1, and a tension roller 8 is installed on the lower end of the inner side of the protective box 1. Two guide rollers 7 are symmetrically arranged about the vertical center line of the protective box 1, and the two guide rollers 7 and the tension roller 8 are distributed in a triangular structure. The upper end face of the guide roller 7 is flush with the upper end face of the conveying roller 3. The front and rear ends of the tension roller 8 are movably connected to the protective box 1 through an elastic component 9. The elastic component 9 includes a movable groove 91, a movable block 92, a guide groove 93, a slider 94, and a connecting spring 95. Movable grooves 91 are opened on both the front and rear sides of the protective box 1, and movable blocks 92 are installed in the movable grooves 91. Guide rollers 92 are opened on both the left and right ends of the inner side of the movable grooves 91. The guide groove 93 and the movable block 92 are both fixedly connected to the left and right ends of the guide groove 93 and the slider 94. The upper and lower ends of the movable block 92 are both fixedly connected to the connecting spring 95. The guide groove 93 and the slider 94 are slidably connected. The ends of the two connecting springs 95 away from the movable block 92 are fixedly connected to the protective box 1. The two movable blocks 92 are rotatably connected to the front and rear ends of the tension roller 8 respectively. The tension roller 8 is used to bear the tension force during the packaging film conveying process. Through the elasticity of the connecting spring 95, the movable block 92 can move up and down. When the tension force is too large, the tension roller 8 moves upward to reduce the gap between the tension roller 8 and the guide roller 7, so as to avoid the packaging film from breaking and achieve anti-breakage protection.

[0025] During operation, the packaging film first enters the protective box 1 through the feeding rack 2, where the conveying roller 3 adheres to the film. The conveying motor 4 drives the conveying roller 3 to rotate, moving the film and facilitating speed control. Simultaneously, the flattening roller 5 smooths the film, increasing the flatness of the conveyed packaging film. By rotating the adjusting handle 62, the threaded rod 61 can be rotated, causing the connecting frame 51 to move up and down, adjusting the distance between the flattening roller 5 and the conveying roller 3 to accommodate packaging films of different thicknesses. As the packaging film enters the protective box 1, it passes through the guide roller 7 and the tensioning roller 8, forming a triangular path. The tensioning roller 8 bears the tension force during the conveying process, and the elasticity of the connecting spring 95 allows the movable block 92 to move up and down. When the tension force is too large, the tensioning roller 8 moves upward, reducing the distance between the tensioning roller 8 and the guide roller 7, preventing the packaging film from breaking and achieving anti-breakage protection.

[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A membrane breakage prevention device, comprising a protective box (1), characterized in that: A feeding rack (2) is fixedly connected to the left side of the upper end of the protective box (1). A conveying roller (3) is installed at the lower end of the inner side of the feeding rack (2). A conveying motor (4) is provided at the front end of the feeding rack (2). A leveling roller (5) is provided at the upper end of the inner side of the feeding rack (2). An adjusting component (6) is provided at the upper end of the feeding rack (2). A guide roller (7) is installed at the right end of the inner side of the protective box (1). A tensioning roller (8) is provided at the lower end of the inner side of the protective box (1). The front and rear ends of the tensioning roller (8) are movably connected to the protective box (1) through an elastic component (9).

2. The anti-breakage device according to claim 1, characterized in that: The feeding rack (2) has a U-shaped structure design. The front and rear ends of the conveying roller (3) are rotatably connected to the feeding rack (2). The front end of the conveying roller (3) is fixedly connected to the output end of the conveying motor (4). The surface of the conveying roller (3) is provided with a rubber pad.

3. The anti-breakage device according to claim 1, characterized in that: A connecting frame (51) is installed on the outside of the leveling roller (5). The connecting frame (51) is rotatably connected to the front and rear ends of the leveling roller (5). The leveling roller (5) has a smooth surface.

4. The anti-breakage membrane device according to claim 3, characterized in that: The adjustment assembly (6) includes a threaded rod (61), an adjustment handle (62), and a guide rod (63). The upper end of the feed rack (2) is threadedly connected to the threaded rod (61). The lower end of the threaded rod (61) extends to the inner side of the feed rack (2) and is rotatably connected to the connecting frame (51) via a bearing. The upper end of the threaded rod (61) is fixedly connected to the adjustment handle (62). The front and rear sides of the upper end of the feed rack (2) are slidably connected to the guide rod (63). The lower end of the guide rod (63) extends to the inner side of the feed rack (2) and is fixedly connected to the upper end of the connecting frame (51).

5. The anti-breakage device according to claim 4, characterized in that: Two guide rollers (7) are symmetrically arranged about the vertical center line of the protective box (1), and the two guide rollers (7) and the tension roller (8) are distributed in a triangular structure. The upper end face of the guide roller (7) and the upper end face of the conveying roller (3) are flush with each other.

6. The anti-breakage device according to claim 1, characterized in that: The elastic component (9) includes a movable groove (91), a movable block (92), a guide groove (93), a slider (94), and a connecting spring (95). The protective box (1) has movable grooves (91) on both the front and rear sides. A movable block (92) is provided in the movable groove (91). A guide groove (93) is provided at both the left and right ends of the inner side of the movable groove (91). A slider (94) is fixedly connected to both the left and right ends of the movable block (92). A connecting spring (95) is fixedly connected to both the upper and lower ends of the movable block (92).

7. The anti-breakage membrane device according to claim 6, characterized in that: The guide groove (93) and the slider (94) are slidably connected, and the ends of the two connecting springs (95) away from the movable block (92) are fixedly connected to the protective box (1). The two movable blocks (92) are rotatably connected to the front and rear ends of the tensioning roller (8) respectively.