PE protective film stretching clamp

Abstract

The utility model relates to protective film clamp technical field provides a kind of PE protective film stretching clamp, comprising: mounting plate and multiple fixed blocks;Multiple mounting holes, opening in the four corners of the surface of mounting plate;Further include: mounting bracket, set up on the side surface of mounting plate, the side surface of mounting bracket is opened and is limited to groove;Mounting box, set up on the outer surface of mounting bracket, the outer surface of mounting box is provided with U-shaped frame, the inner wall of U-shaped frame is fixedly provided with driving motor, and the output end of driving motor is provided with worm screw rod. The utility model, by the long bolt inside the rotation screw hole, make long bolt contact with fixed block, drive fixed block to approach another fixed block, cooperate telescopic link and spring to provide fixed block with limit and reset work, with the aid of anti-slip grain to provide anti-slip work to PE protective film, to complete the clamping work to the PE protective film of different thickness, improve the applicability and flexibility of device.

Description

Technical Field

[0001] This utility model relates to the field of protective film clamping technology, and in particular to a PE protective film stretching clamp. Background Technology

[0002] PE protective film is a widely used polymer film material. During the production process of PE protective film, it is necessary to test its tensile properties. When conducting tensile testing on PE protective film, the PE protective film is cut into strips of a certain size, and then both ends of the PE protective film are directly fixed to the tensile fixture of the tensile testing machine. The sample needs to be kept straight. The PE protective film tensile fixture is generally composed of clamping blocks, locking bolts, tensile sensors, connectors and other components.

[0003] However, in the existing technology, some equipment for clamping PE protective film usually uses pneumatic clamps, which are not flexible enough to adjust according to the different thicknesses of PE protective film. Therefore, the PE protective film is easily damaged during clamping, which has certain limitations. At the same time, some clamps cannot maintain uniform force during the clamping of PE protective film, resulting in cracking or excessive deformation at the clamping point during the testing of PE protective film. Utility Model Content

[0004] The purpose of this invention is to solve the following problems in the existing technology: some devices for clamping PE protective films usually use pneumatic clamps, but they are not flexible enough in use and cannot be adjusted according to the different thicknesses of PE protective films. Therefore, the PE protective film is easily damaged during clamping, which has certain limitations. At the same time, some clamps cannot maintain uniform force during the clamping of PE protective films, resulting in cracks or excessive deformation at the clamping points during the testing of PE protective films.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a PE protective film stretching clamp, comprising: a mounting plate and multiple fixing blocks; multiple mounting holes formed at the four corners of the surface of the mounting plate; and further comprising:

[0006] A mounting bracket is disposed on one side surface of the mounting plate, and a limiting groove is formed on one side surface of the mounting bracket;

[0007] An installation box is disposed on the outer surface of the mounting frame. A U-shaped frame is disposed on the outer surface of the installation box. A drive motor is fixedly disposed on the inner wall of the U-shaped frame. A worm is disposed on the output end of the drive motor. A worm wheel is meshed on the surface of the worm. A double-acting screw is fixedly disposed on the inner wall of the worm wheel. The double-acting screw bearing is disposed on the inner wall of the installation box.

[0008] Preferably, the surfaces of the bidirectional lead screw at symmetrical locations are provided with movable blocks, and one end surface of the two movable blocks is slidably embedded inside the limiting groove.

[0009] The technical effect of adopting the above-mentioned further solution is that when the bidirectional lead screw rotates, it drives the moving blocks at the symmetrical position on the outer surface to move along the inside of the limiting groove for centering.

[0010] Preferably, one side surface of the two movable blocks is provided with threaded holes, and long bolts are embedded in the internal threads of the two threaded holes.

[0011] The technical effect of adopting the above-mentioned further solution is that the long bolt is limited by the threaded hole on the surface.

[0012] Preferably, one side surface of the plurality of fixing blocks is provided with anti-slip texture, and the plurality of fixing blocks are evenly divided into two groups.

[0013] The technical effect of adopting the above-mentioned further solution is that the anti-slip texture set on the surface of the fixing block enhances the contact with the PE protective film and provides anti-slip function.

[0014] Preferably, one set of the fixing blocks is disposed on the inner wall of the movable block, and the other set of the fixing blocks is movably connected to the surface of the long bolt.

[0015] The technical effect of adopting the above-mentioned further solution is that a set of moving blocks is fixed by a fixed block, and at the same time, when the long bolt moves, it drives another set of fixed blocks to move.

[0016] Preferably, one side surface of the other set of fixed blocks is provided with telescopic rods, and one end of the two telescopic rods is fixedly set on the inner wall of the movable block.

[0017] The technical effect of adopting the above-mentioned further solution is that by connecting the two ends of the telescopic rod to the surfaces of the fixed block and the moving block respectively, the fixed block is reset.

[0018] Preferably, a spring is provided on one side surface of another set of fixed blocks, and one end of the two springs is provided on the inner wall of the movable block.

[0019] The technical effect of adopting the above-mentioned further solution is that by connecting the two ends of the spring to the surfaces of the fixed block and the moving block respectively, the fixed block is provided with a limiting function.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] 1. In this utility model, bolts, nuts, and other tools are embedded inside the mounting holes to install the mounting plate on the tensile testing machine. Two sets of PE protective films are fixed at the top and bottom. According to the width of the PE protective film, the drive motor is started to work, so that the worm gear at the output end drives the worm wheel to rotate, which in turn causes the bidirectional lead screw to rotate, driving the moving block on the surface to move along the inside of the limiting groove for centering. This facilitates the positioning of both sides of one end of the PE protective film and prevents uneven force on both sides during the stretching process when the PE protective film is clamped in the middle, which could cause damage to the PE protective film.

[0022] 2. In this utility model, by rotating the long bolt inside the threaded hole, the long bolt comes into contact with the fixed block, which drives the fixed block to move closer to another fixed block. The telescopic rod and spring provide limiting and resetting functions for the fixed block. The anti-slip texture provides anti-slip function for the PE protective film, thereby completing the clamping work of PE protective films of different thicknesses, improving the applicability and flexibility of the device. Attached Figure Description

[0023] Figure 1 A bottom view of the structure of a PE protective film stretching clamp is provided for this utility model;

[0024] Figure 2 This utility model provides a schematic diagram of the partially unfolded structure of a PE protective film stretching clamp;

[0025] Figure 3 This utility model provides a partial cross-sectional view of a PE protective film stretching clamp.

[0026] Figure 4 This utility model proposes a PE protective film stretching clamp. Figure 1 Enlarged structural diagram at point A in the middle.

[0027] Legend:

[0028] 1. Mounting plate; 101. Mounting hole; 2. Mounting bracket; 201. Limiting groove; 202. Mounting box; 2021. U-shaped frame; 2022. Drive motor; 2023. Worm gear; 2024. Two-way lead screw; 2025. Worm wheel; 2026. Moving block; 2027. Threaded hole; 203. Long bolt; 3. Fixing block; 301. Anti-slip texture; 302. Telescopic rod; 303. Spring. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0031] Example 1, such as Figure 1-4 As shown, this utility model provides a PE protective film stretching clamp, including: a mounting plate 1 and multiple fixing blocks 3; multiple mounting holes 101, opened at the four corners of the surface of the mounting plate 1; and also including: a mounting frame 2, disposed on one side surface of the mounting plate 1, with a limit groove 201 opened on one side surface of the mounting frame 2; a mounting box 202, disposed on the outer surface of the mounting frame 2, with a U-shaped frame 2021 disposed on the outer surface of the mounting box 202, a drive motor 2022 fixedly disposed on the inner wall of the U-shaped frame 2021, a worm gear 2023 disposed at the output end of the drive motor 2022, a worm wheel 2025 meshing with the surface of the worm gear 2023, a bidirectional lead screw 2024 fixedly disposed on the inner wall of the worm wheel 2025, and a bearing of the bidirectional lead screw 2024 disposed on the inner wall of the mounting box 202.

[0032] In this embodiment, the mounting plate 1 is installed on the tensile testing machine by means of bolts, nuts and other tools embedded in the mounting hole 101. Two sets of PE protective film are fixed by means of two sets of tools set at the top and bottom. According to the width of the PE protective film, the drive motor 2022 is started to work, so that the output worm 2023 drives the worm wheel 2025 to rotate, which in turn causes the bidirectional lead screw 2024 to rotate, which drives the moving block 2026 on the surface to move along the inside of the limiting groove 201 to center, which facilitates the positioning of the two sides of one end of the PE protective film and prevents uneven force on both sides during the stretching process when the PE protective film is clamped in the middle, which may cause the PE protective film to break.

[0033] In Example 2, movable blocks 2026 are provided on the symmetrical surface of the bidirectional lead screw 2024. One end of each movable block 2026 is slidably embedded in the interior of the limiting groove 201. Threaded holes 2027 are provided on one side of each movable block 2026. Long bolts 203 are threaded into the interior of the two threaded holes 2027. Anti-slip textures 301 are provided on one side of each of the multiple fixed blocks 3. The multiple fixed blocks 3 are evenly divided into two groups. One group of fixed blocks 3 is set on the inner wall of the movable block 2026, and the other group of fixed blocks 3 is movably connected to the surface of the long bolts 203. Telescopic rods 302 are provided on one side of the other group of fixed blocks 3. One end of each of the two telescopic rods 302 is fixed on the inner wall of the movable block 2026. Springs 303 are provided on one side of the other group of fixed blocks 3. One end of each of the two springs 303 is set on the inner wall of the movable block 2026.

[0034] In this embodiment, by rotating the long bolt 203 inside the threaded hole 2027, the long bolt 203 is brought into contact with the fixing block 3, which drives the fixing block 3 to move closer to another fixing block 3. The telescopic rod 302 and the spring 303 provide limiting and resetting work for the fixing block 3. The anti-slip texture 301 provides anti-slip work for the PE protective film, thereby completing the clamping work for PE protective films of different thicknesses, improving the applicability and flexibility of the device.

[0035] Working principle: In use, using bolts, nuts, or other tools, the mounting plate 1 is installed on the tensile testing machine by embedding it into the mounting hole 101. Two sets of supports are installed at the top and bottom to fix the PE protective film. Based on the width of the PE protective film, the drive motor 2022 is started, causing the output worm gear 2023 to drive the worm wheel 2025 to rotate, which in turn causes the bidirectional lead screw 2024 to rotate. This drives the moving block 2026 on the surface to move along the inside of the limiting groove 201 for centering, facilitating the positioning of both sides of one end of the PE protective film. To prevent uneven stress on both sides during stretching when clamping the PE protective film in the middle, which could cause damage, the long bolt 203 inside the threaded hole 2027 is rotated to contact the fixing block 3, causing the fixing block 3 to move closer to another fixing block 3. This, together with the telescopic rod 302 and spring 303, provides limiting and resetting functions for the fixing block 3. The anti-slip texture 301 provides anti-slip function for the PE protective film, thus completing the clamping work for PE protective films of different thicknesses and improving the applicability and flexibility of the device.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A PE protective film stretching clamp, comprising: Mounting plate (1) and multiple fixing blocks (3); Multiple mounting holes (101) are provided at the four corners of the surface of the mounting plate (1); characterized in that it further includes: Mounting bracket (2) is disposed on one side surface of the mounting plate (1), and a limiting groove (201) is formed on one side surface of the mounting bracket (2); The mounting box (202) is disposed on the outer surface of the mounting frame (2). A U-shaped frame (2021) is disposed on the outer surface of the mounting box (202). A drive motor (2022) is fixedly disposed on the inner wall of the U-shaped frame (2021). A worm gear (2023) is disposed at the output end of the drive motor (2022). A worm wheel (2025) is meshed on the surface of the worm gear (2023). A double-acting screw (2024) is fixedly disposed on the inner wall of the worm wheel (2025). The bearing of the double-acting screw (2024) is disposed on the inner wall of the mounting box (202).

2. The PE protective film stretching fixture according to claim 1, characterized in that: The surface of the bidirectional lead screw (2024) is provided with movable blocks (2026) at symmetrical locations, and one end surface of the two movable blocks (2026) is slidably embedded in the interior of the limiting groove (201).

3. The PE protective film stretching fixture according to claim 2, characterized in that: One side surface of each of the two movable blocks (2026) is provided with a threaded hole (2027), and a long bolt (203) is embedded in the internal thread of the two threaded holes (2027).

4. The PE protective film stretching fixture according to claim 1, characterized in that: One side surface of the plurality of fixing blocks (3) is provided with anti-slip texture (301), and the plurality of fixing blocks (3) are divided into two groups on average.

5. A PE protective film stretching fixture according to claim 4, characterized in that: One set of the fixing blocks (3) is disposed on the inner wall of the movable block (2026), and the other set of fixing blocks (3) is movably connected to the surface of the long bolt (203).

6. A PE protective film stretching fixture according to claim 5, characterized in that: Another set of fixed blocks (3) has a telescopic rod (302) on one side surface, and one end of the two telescopic rods (302) is fixedly set on the inner wall of the movable block (2026).

7. A PE protective film stretching fixture according to claim 6, characterized in that: Another set of fixed blocks (3) has springs (303) on one side surface, and one end of the two springs (303) is set on the inner wall of the movable block (2026).

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