A tensile strength detection structure for plastic film

Abstract

The utility model discloses a kind of tensile strength detection structure for plastic film, it is related to tensile strength detection technical field, including installation platform and lifting platform, lifting platform is symmetrically equipped with sliding block, rotating shaft is equipped in sliding block interior, rotating shaft is rotatably connected with sliding block, spring and limit block are symmetrically equipped in sliding block interior, rotating block is equipped in sliding block front side, rotating block is fixedly connected with rotating shaft, rotating block is rotatably connected with sliding block by rotating shaft, rotating block is symmetrically opened with insertion slot, insertion slot is inserted by limit block, the utility model is structured by rotating shaft and limit block, limit block is stirred, limit block extrusion spring makes it shrink, the restriction of rotating block is released, rotating block is rotated by rotating shaft again and is switched to the chuck needed, then limit block is loosened, spring resets and makes limit block insert into insertion slot, rotating block is positioned, this structure design can be switched to different chuck according to the nature of different film, reduce experimental error.

Description

Technical Field

[0001] This utility model relates to the field of tensile strength testing technology, and specifically to a tensile strength testing structure for plastic films. Background Technology

[0002] The tensile strength of plastic film is an important indicator for measuring its quality and performance, and is directly related to the film's durability, reliability and service life. Therefore, a precise testing structure is needed for testing. The tensile strength testing structure for plastic film is to fix the film sample, apply a controlled tensile force and record the data to accurately measure its ability to resist tensile failure.

[0003] Traditional plastic film tensile strength testing structures use clamps to fix the film, then apply axial tension to the film sample, measure the maximum force and deformation at break, and finally calculate the tensile strength. However, most equipment comes standard with flat clamps, which are only suitable for conventional films with flat surfaces and uniform thickness. For ultra-thin films, the clamping force of the flat clamps can easily cause local crushing or deformation of the sample. For films with textured surfaces or extremely flexible films, the clamps cannot provide uniform friction and are prone to slippage. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a tensile strength testing structure for plastic films, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile strength testing structure for plastic film, comprising a mounting platform and a lifting platform, the mounting platform and the lifting platform being fixedly connected, the lifting platform being symmetrically provided with sliding blocks, the sliding blocks having a rotating shaft inside, the rotating shaft being rotatably connected to the sliding blocks, the sliding blocks having a spring and a limiting block symmetrically provided inside, one end of the spring being fixedly connected to the sliding block, the other end of the spring being fixedly connected to the limiting block, a rotating block being provided on the front side of the sliding block, the rotating block being fixedly connected to the rotating shaft, the rotating block being rotatably connected to the sliding block through the rotating shaft, the rotating block having slots symmetrically opened, the slots being inserted into the limiting blocks.

[0006] As a preferred embodiment of the tensile strength testing structure for plastic film of this utility model, the rotating block is symmetrically provided with a fixed box, the fixed box is detachably connected to the rotating block, a telescopic block and a second spring are provided on one side of the fixed box, the second spring is fixedly connected to the fixed box, the second spring is fixedly connected to the telescopic block, and the telescopic block is slidably connected to the fixed box.

[0007] As a preferred embodiment of the tensile strength testing structure for plastic film of this utility model, the fixed box is symmetrically provided with a movable plate, an adjusting knob, and a guide rod. The adjusting knob is threadedly connected to the movable plate and rotatably connected to the fixed box. The guide rod passes through the movable plate and is fixedly connected to the fixed box. The guide rod is slidably connected to the movable plate.

[0008] As a preferred embodiment of the tensile strength testing structure for plastic film of this utility model, wherein: a clamping plate 1 is symmetrically provided inside the fixed box on one side, and the clamping plate 1 is fixedly connected to the moving plate; a clamping plate 2 is symmetrically provided inside the fixed box on the other side, and the clamping plate 2 is fixedly connected to the moving plate.

[0009] As a preferred embodiment of the tensile strength testing structure for plastic film of this utility model, the lifting platform is provided with a sliding groove, a guide plate is provided in the sliding groove, a sliding block is provided with a sliding hole, the sliding hole is penetrated by the guide plate, the sliding block is slidably connected to the lifting platform through the sliding hole, the lifting platform is provided with a rotating screw, the rotating screw is rotatably connected to the lifting platform, a drive motor is fixedly installed on the top of the lifting platform, the drive motor is fixedly connected to the rotating screw, the rotating screw passes through the sliding block, and the rotating screw is threadedly connected to the sliding block.

[0010] As a preferred embodiment of the tensile strength testing structure for plastic film according to this utility model, an operating table is provided on one side of the top of the mounting platform, and the operating table is fixedly connected to the mounting platform.

[0011] As a preferred embodiment of the tensile strength testing structure for plastic film according to this utility model, the bottom of the mounting platform is provided with a support pad, and the support pad is fixedly connected to the mounting platform.

[0012] As a preferred embodiment of the tensile strength testing structure for plastic films according to this utility model, the rotating shaft end is provided with an array of friction blocks, and the friction blocks are fixedly connected to the mounting platform.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art: This invention utilizes a rotating shaft and a limiting block design. By moving the limiting block, the limiting block compresses the spring, causing it to contract and releasing the restriction on the rotating block. The rotating block is then rotated via the rotating shaft to switch to the desired clamp. After releasing the limiting block, the spring returns to its original position, allowing the limiting block to be inserted into the slot and thus limiting the rotation of the block. This design allows for switching to different clamps based on the properties of different films, reducing experimental errors.

[0014] 2. This utility model uses a structure design of telescopic block and spring. Pressing the telescopic block causes it to retract into the fixed box, while compressing the spring to release the restriction of the fixed box. The fixed box can then be removed from the rotating block for replacement. This structural design allows for the quick disassembly and replacement of damaged chucks with new ones, avoiding excessive time spent on chuck replacement and thus reducing work efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention for testing the tensile strength of plastic films; Figure 2 This is a cross-sectional structural diagram of the lifting component of the tensile strength testing structure for plastic film of this utility model; Figure 3 This is a schematic diagram of the overall structure of the switching component for testing the tensile strength of plastic film according to this utility model; Figure 4 This is a cross-sectional structural diagram of the switching component for testing the tensile strength of plastic film according to this utility model; Figure 5 This is a cross-sectional schematic diagram of the clamping component of the tensile strength testing structure for plastic film of this utility model.

[0017] 1. Mounting platform; 101. Support pad; 2. Lifting platform; 201. Drive motor; 202. Rotating lead screw; 203. Guide plate; 204. Sliding groove; 3. Sliding block; 301. Sliding hole; 302. Spring 1; 303. Limiting block; 4. Rotating block; 401. Rotating shaft; 402. Friction block; 403. Slot; 5. Fixing box; 501. Moving plate; 502. Clamping plate 1; 503. Clamping plate 2; 504. Telescopic block; 505. Adjusting knob; 506. Spring 2; 507. Guide rod; 6. Operating table. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The present invention will be further described below with reference to the embodiments.

[0020] This utility model provides a technical solution: such as Figure 1 - Figure 5 As shown in this embodiment, a tensile strength testing structure for plastic film includes a mounting platform 1 and a lifting platform 2. The mounting platform 1 is fixedly connected to the lifting platform 2. The lifting platform 2 is symmetrically provided with sliding blocks 3. The sliding blocks 3 are provided with a rotating shaft 401 inside. The rotating shaft 401 is rotatably connected to the sliding blocks 3. The sliding blocks 3 are symmetrically provided with a spring 302 and a limiting block 303 inside. One end of the spring 302 is fixedly connected to the sliding blocks 3, and the other end of the spring 302 is fixedly connected to the limiting block 303. A rotating block 4 is provided on the front side of the sliding blocks 3. The rotating block 4 is fixedly connected to the rotating shaft 401. The rotating block 4 is rotatably connected to the sliding blocks 3 through the rotating shaft 401. The rotating blocks 4 are symmetrically provided with slots 403, and the slots 403 are inserted into the limiting blocks 303.

[0021] like Figure 1 - Figure 5As shown, the rotating block 4 is symmetrically provided with a fixed box 5, which is detachably connected to the rotating block 4. One side of the fixed box 5 is provided with a telescopic block 504 and a second spring 506. The second spring 506 is fixedly connected to the fixed box 5 and the telescopic block 504. The telescopic block 504 is slidably connected to the fixed box 5. Inside the fixed box 5, there are symmetrically provided a movable plate 501, an adjusting knob 505, and a guide rod 507. The adjusting knob 505 is threadedly connected to the movable plate 501 and rotatably connected to the fixed box 5. The guide rod 507 passes through the movable plate 501 and is fixedly connected to the fixed box 5. The guide rod 507 is slidably connected to the movable plate 501. One side is fixed... The fixed box 5 is symmetrically equipped with clamping plates 502. Clamping plates 502 adopt a double-layer composite structure. The outer layer is an ultra-soft silicone pad and the inner layer is an elastic steel sheet. The surface of the silicone pad is processed with micron-level grid texture, which increases friction and can also disperse the clamping force through the flexible material to avoid local pressure damage to the ultra-thin film. Clamping plates 502 are fixedly connected to the moving plate 501. The other side of the fixed box 5 is symmetrically equipped with clamping plates 503. Clamping plates 503 adopt a biomimetic sawtooth structure and are made of wear-resistant polyurethane. The sawtooth shape can be adapted to most common textures (such as circular bumps and stripes). It is embedded in the gaps of the texture to form mechanical interlocking and enhance friction. Clamping plates 503 are fixedly connected to the moving plate 501.

[0022] The lifting platform 2 has a sliding groove 204, and a guide plate 203 is provided in the sliding groove 204. The sliding block 3 has a sliding hole 301, which is penetrated by the guide plate 203. The sliding block 3 is slidably connected to the lifting platform 2 through the sliding hole 301. The lifting platform 2 has a rotating screw 202, which is rotatably connected to the lifting platform 2. A drive motor 201 is fixedly installed on the top of the lifting platform 2. The drive motor 201 is fixedly connected to the rotating screw 202. The rotating screw 202 passes through the sliding block 3 and is threadedly connected to the sliding block 3. An operating platform 6 is provided on one side of the top of the mounting platform 1. The operating platform 6 is fixedly connected to the mounting platform 1. Support pads 101 are arranged in an array at the bottom of the mounting platform 1. The support pads 101 are fixedly connected to the mounting platform 1. Friction blocks 402 are arranged in an array at the end of the rotating shaft 401 to increase the friction between the hand and the rotating shaft 401 and prevent slippage during rotation. The friction blocks 402 are fixedly connected to the mounting platform 1.

[0023] This invention provides a structure for testing the tensile strength of plastic films, and its working principle is as follows: In use, first, move the limiting block 303. The limiting block 303 compresses the spring 302 and causes the spring 302 to contract, releasing the restriction of the rotating block 4. Then, rotate the rotating block 4 via the rotating shaft 401 to switch to the desired clamp. Then, release the limiting block 303, and the spring 302 returns to its original position, allowing the limiting block 303 to re-insert into the slot 403, thus limiting the rotation of the rotating block 4. After placing one end of the film into the moving plate 501 below the lifting platform 2, rotate the adjusting knob 505 to move the moving plate 501 along... The guide rod 507 clamps the film inward, and then the other end of the film is placed into the moving plate 501 above the lifting platform 2 and clamped. The drive motor 201 is started to rotate the rotating screw 202, so that the sliding block 3 moves upward along the guide plate 203 to stretch the film. If the clamp needs to be replaced after long-term use, the telescopic block 504 can be pressed to retract the telescopic block 504 into the fixed box 5, while compressing the second spring 506 to release the restriction of the fixed box 5. The fixed box 5 can then be removed from the rotating block 4 for replacement.

[0024] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A structure for testing the tensile strength of plastic films, characterized in that: The system includes an installation platform (1) and a lifting platform (2). The installation platform (1) is fixedly connected to the lifting platform (2). The lifting platform (2) is symmetrically provided with sliding blocks (3). The sliding blocks (3) are provided with a rotating shaft (401) inside. The rotating shaft (401) is rotatably connected to the sliding blocks (3). The sliding blocks (3) are symmetrically provided with a spring (302) and a limiting block (303) inside. One end of the spring (302) is fixedly connected to the sliding blocks (3), and the other end of the spring (302) is fixedly connected to the limiting block (303). The front side of the sliding blocks (3) is provided with a rotating block (4). The rotating block (4) is fixedly connected to the rotating shaft (401). The rotating block (4) is rotatably connected to the sliding blocks (3) through the rotating shaft (401). The rotating blocks (4) are symmetrically provided with slots (403). The slots (403) are inserted into the limiting blocks (303).

2. The tensile strength testing structure for plastic films according to claim 1, characterized in that: The rotating block (4) is symmetrically provided with a fixed box (5). The fixed box (5) is detachably connected to the rotating block (4). The fixed box (5) is provided with a telescopic block (504) and a second spring (506) on one side. The second spring (506) is fixedly connected to the fixed box (5). The second spring (506) is fixedly connected to the telescopic block (504). The telescopic block (504) is slidably connected to the fixed box (5).

3. The tensile strength testing structure for plastic films according to claim 2, characterized in that: The fixed box (5) is symmetrically provided with a movable plate (501), an adjustment knob (505), and a guide rod (507). The adjustment knob (505) is threadedly connected to the movable plate (501) and rotatably connected to the fixed box (5). The guide rod (507) passes through the movable plate (501) and is fixedly connected to the fixed box (5). The guide rod (507) is slidably connected to the movable plate (501).

4. The tensile strength testing structure for plastic films according to claim 3, characterized in that: One side of the fixed box (5) is symmetrically provided with a clamping plate 1 (502) inside, and the clamping plate 1 (502) is fixedly connected to the moving plate (501). The other side of the fixed box (5) is symmetrically provided with a clamping plate 2 (503) inside, and the clamping plate 2 (503) is fixedly connected to the moving plate (501).

5. The tensile strength testing structure for plastic films according to claim 1, characterized in that: The lifting platform (2) is provided with a sliding groove (204), and a guide plate (203) is provided in the sliding groove (204). The sliding block (3) is provided with a sliding hole (301), and the sliding hole (301) is penetrated by the guide plate (203). The sliding block (3) is slidably connected to the lifting platform (2) through the sliding hole (301). The lifting platform (2) is provided with a rotating screw (202), and the rotating screw (202) is rotatably connected to the lifting platform (2). A drive motor (201) is fixedly installed on the top of the lifting platform (2). The drive motor (201) is fixedly connected to the rotating screw (202). The rotating screw (202) penetrates the sliding block (3), and the rotating screw (202) is threadedly connected to the sliding block (3).

6. The tensile strength testing structure for plastic films according to claim 1, characterized in that: An operating table (6) is provided on one side of the top of the mounting platform (1), and the operating table (6) is fixedly connected to the mounting platform (1).

7. The tensile strength testing structure for plastic films according to claim 1, characterized in that: The mounting platform (1) has a support pad (101) arranged at the bottom, and the support pad (101) is fixedly connected to the mounting platform (1).

8. The tensile strength testing structure for plastic films according to claim 1, characterized in that: The rotating shaft (401) has friction blocks (402) arranged at its end, and the friction blocks (402) are fixedly connected to the mounting platform (1).

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