Device for testing impact resistance of plastic film

Abstract

The utility model belongs to the technical field of film detection, and relates to a device for testing the impact resistance of a plastic film, which comprises a falling support and two clamping supports, the two clamping supports are symmetrically arranged, each clamping support is provided with an electric sliding table, each electric sliding table is connected with a moving frame in a sliding manner, and each moving frame is provided with a clamping assembly; moving lead screws and moving motors matched with the moving lead screws are arranged on the two sides of the top of the falling support, the two moving lead screws are movably connected with the same moving guide rail, and a falling assembly is arranged on the moving guide rail. According to the utility model, the two clamping assemblies are matched with the electric sliding table, so that the thin film can be clamped and then straightened, the thin film testing device can be suitable for testing thin films of various sizes and specifications, and meanwhile, the falling assembly can carry out an impact test at any position of the thin film.

Description

Technical Field

[0001] This utility model belongs to the field of film testing technology and relates to a testing device for the impact resistance of plastic films. Background Technology

[0002] Plastic film is a type of plastic film made from polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins. It is used for packaging and as a coating layer. Plastic film is widely used in the food, pharmaceutical, and chemical industries, with food packaging accounting for the largest proportion, such as beverage packaging, frozen food packaging, retortable food packaging, and fast food packaging. These products have brought great convenience to people's lives. During use, plastic film plays a role in sealing and protecting the food, and impact resistance testing is one of the key performance indicators in film production.

[0003] A Chinese utility model patent with publication number CN218271311U discloses a PET film impact resistance testing device, comprising a support rod, a film fixing box fixedly installed at the lower end of the support rod, a controller fixedly installed on the outer side of the support rod near the lower end, a limit hole opened on the outer side of the support rod, a scale plate embedded and fixedly installed on one side of the support rod, a steel ball adsorption frame movably installed at the upper end of the support rod, a fixed support foot fixedly installed on the lower surface of the film fixing box and the lower end of the support rod, a sponge pad fixedly installed on the lower surface of the fixed support foot, and a rubber support foot fixedly installed on the lower surface of the sponge pad.

[0004] The existing technology has the following technical defects:

[0005] Although the above technical solution can realize the experiment of falling object impact on the film, it is easy to cause the film to not be in a taut state when fixing the film. The falling impact test is easily affected by the energy absorption of the relaxed state, thus affecting the test results. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a testing device for the impact resistance of plastic films.

[0007] The impact resistance testing device for plastic film of this utility model includes a drop support and a clamping support. Two clamping supports are symmetrically arranged. Each clamping support is equipped with an electric slide table. A movable frame is slidably connected to each electric slide table. A clamping component is provided on the movable frame. The top two sides of the drop support are equipped with movable screws and corresponding movable motors. The same movable guide rail is movably connected to the two movable screws. The drop component is provided on the movable guide rail.

[0008] Working process or working principle:

[0009] In use, move the two moving frames to the appropriate position according to the size of the test film, then place the film flat in the clamping assembly for clamping, then slowly move the electric slide backward to straighten the film, and then move it to the test position for impact test by the drop assembly.

[0010] The clamping assembly includes a clamping motor, a clamping screw, a guide rod, and an upper clamping plate fixedly connected to the movable frame. The clamping motor is connected to the clamping screw, and a lower clamping plate adapted to the upper clamping plate is threaded onto the clamping screw. The lower clamping plate is slidably connected to the guide rod. The clamping motor drives the lower clamping plate to rise and fall to cooperate with the upper clamping plate, thereby achieving the clamping of the film.

[0011] Both the lower and upper clamping plates are equipped with clamping pads made of rubber, which can effectively adhere to the plastic film and prevent the film from slipping off.

[0012] The falling assembly includes a lifting bracket slidably connected to a moving guide rail. The lifting bracket is equipped with a lifting motor and a matching lifting screw. A clamping frame is threaded onto the lifting screw. The clamping frame is equipped with a clamping electric cylinder. The lifting bracket is equipped with a moving groove corresponding to the clamping frame. The initial falling height of the falling object can be controlled by lifting.

[0013] The clamping frame is connected to the clamping electric cylinder by a rotating electric cylinder, which can test the impact force of different falling objects, and can control the falling angle and impact direction of the falling object by rotating the electric cylinder.

[0014] The aforementioned moving guide rail is an electric guide rail, which can automatically control the movement of the falling component. Electric guide rails are existing technology and can automatically control the falling component at the test position.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention, through the cooperation of two clamping components and an electric slide, can clamp and straighten the film, and is applicable to testing films of various sizes. It can also perform impact tests on the film at any position of the drop component. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0018] Figure 2 This is a front view of an embodiment of the present invention.

[0019] Figure 3 This is a left view of an embodiment of the present invention.

[0020] Figure 4 This is a top view of an embodiment of the present invention.

[0021] In the diagram: 1. Clamping bracket; 2. Electric slide table; 3. Moving frame; 4. Moving motor; 5. Drop bracket; 6. Moving guide rail; 7. Lifting bracket; 8. Lifting screw; 9. Lifting motor; 10. Clamping frame; 11. Clamping electric cylinder; 12. Lower clamping plate; 13. Upper clamping plate; 14. Clamping pad; 15. Guide rod; 16. Clamping screw; 17. Clamping motor; 18. Rotating electric cylinder; 19. Moving screw; 20. Moving slot. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-4 As shown, the impact resistance testing device for plastic film of this utility model includes a drop support 5 and a clamping support 1. Two clamping supports 1 are symmetrically arranged, each clamping support 1 is equipped with an electric slide 2, and each electric slide 2 is slidably connected to a movable frame 3. The movable frame 3 is equipped with a clamping assembly. The top two sides of the drop support 5 are equipped with movable screws 19 and matching movable motors 4. The two movable screws 19 are movably connected to the same movable guide rail 6, and the movable guide rail 6 is equipped with a drop assembly. The clamping assembly includes a clamping motor 17, a clamping screw 16, a guide rod 15, and an upper clamping plate 13 fixedly connected to the movable frame 3. The clamping motor 17 is connected to the clamping screw 16, and the clamping screw 16 is threadedly connected to a lower clamping plate 12 that matches the upper clamping plate 13. The lower clamping plate 12 is slidably connected to the guide rod 15. The clamping motor 17 drives the lower clamping plate 12 to rise and fall to cooperate with the upper clamping plate 13, thereby achieving the clamping of the film. Both the lower clamping plate 12 and the upper clamping plate 13 are equipped with clamping pads 14. The clamping pads 14 are made of rubber and can effectively adhere to the plastic film to prevent the film from slipping. The falling component includes a lifting bracket 7 slidably connected to the moving guide rail 6. The lifting bracket 7 is equipped with a lifting motor 9 and a matching lifting screw 8. The lifting screw 8 is threadedly connected to a clamping frame 10. The clamping frame 10 is equipped with a clamping electric cylinder 11. The lifting bracket 7 is equipped with a moving groove 20 corresponding to the clamping frame 10. The initial falling height of the falling object can be controlled by lifting. A rotating electric cylinder 18 is connected between the clamping frame 10 and the clamping electric cylinder 11. The impact force of different falling objects can be tested, and the falling angle and impact direction of the falling object can be controlled by rotating the electric cylinder 18. The moving guide rail 6 is an electric guide rail, which can realize automatic control of the movement of the falling component. The electric guide rail is existing technology and can realize automatic control of the falling component in the test position.

[0024] Working process or working principle:

[0025] In use, the two moving frames 3 are moved to the appropriate position according to the size of the test film. Then, the film is placed flat between the upper clamping plate 13 and the lower clamping plate 12. The clamping motor 17 drives the lower clamping plate 12 to rise and clamp the film. Then, the electric slide table 2 drives the moving frame 3 to move backward slowly to straighten the film. Then, the moving slide rail and the moving screw 19 are controlled to move the lifting bracket 7 that holds the falling object to the position where it needs to be dropped. Then, the height is adjusted and the impact test is carried out by dropping.

[0026] This invention, through the cooperation of two clamping components and an electric slide 2, can clamp and straighten the film, and is applicable to testing films of various sizes. It can also perform impact tests on the film at any position of the drop component.

[0027] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A device for testing the impact resistance of a plastic film, characterized in that: Including falling support (5) and clamping support (1), clamping support (1) is provided with two symmetrically, each clamping support (1) is equipped with electric sliding platform (2), each electric sliding platform (2) is slidably connected with moving frame (3), and moving frame (3) is equipped with clamping assembly; Falling support (5) top both sides are equipped with moving screw (19) and the moving motor (4) that is adapted thereto, and the same moving guide rail (6) is movably connected on two moving screw (19), and falling assembly is equipped on moving guide rail (6).

2. The apparatus for testing the impact resistance of a plastic film according to claim 1, wherein: The clamping assembly includes a clamping motor (17) fixedly connected to the moving frame (3), a clamping screw (16), a guide rod (15), and an upper clamping plate (13), the clamping motor (17) is connected to the clamping screw (16), the clamping screw (16) is threadedly connected with a lower clamping plate (12) adapted to the upper clamping plate (13), and the lower clamping plate (12) is slidably connected to the guide rod (15).

3. The apparatus for testing the impact resistance of a plastic film according to claim 2, wherein: The lower clamping plate (12) and the upper clamping plate (13) are both provided with clamping pads (14).

4. The apparatus for testing the impact resistance of a plastic film according to claim 3, wherein: The falling assembly includes a lifting support (7) slidably connected to the moving guide rail (6), the lifting support (7) is provided with a lifting motor (9) and a lifting screw (8) adapted thereto, the lifting screw (8) is threadedly connected with a clamping frame (10), the clamping frame (10) is provided with a clamping cylinder (11), and the lifting support (7) is provided with a moving groove (20) corresponding to the clamping frame (10).

5. The apparatus for testing the impact resistance of a plastic film according to claim 4, wherein: The clamping frame (10) and the clamping cylinder (11) are connected by a rotating cylinder (18).

6. The apparatus for testing the impact resistance of a plastic film according to any one of claims 1 to 5, characterized in that: The moving guide rail (6) is an electric guide rail, which can automatically control the movement of the falling assembly.

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