PVC (polyvinyl chloride) film strength tensile testing device
By using technical means such as the first cylinder, distance sensor and infrared sensor in the tensile testing device, automatic adjustment of the fixture distance and synchronous clamping are achieved, solving the problem of cumbersome adjustment and clamping in the prior art, and improving the testing efficiency.
Patent Information
- Application Number
- CN202421680060.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing tensile testing devices are cumbersome in the adjustment and clamping process, resulting in low testing efficiency.
A PVC membrane strength tensile testing device including a first cylinder and a distance sensor is designed to achieve automatic clamping by accurately adjusting the distance between the first clamp and the second clamp, and using an infrared sensor and the second cylinder to control the synchronous proximity of the clamp block.
It avoids the cumbersomeness of manual repeated adjustment and clamping, and improves the testing efficiency.
Smart Images
Figure CN222979243U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tensile testing, and more specifically, it relates to a PVC film strength tensile testing device. Background Art
[0002] PVC film is a kind of film made of polyvinyl chloride (PVC) material. Due to its excellent durability, waterproof and anti-fouling properties, as well as relatively low price, it is widely used in various fields.
[0003] The strength tensile property is one of the important physical properties of PVC film. During use, the PVC film may be subjected to various tensile stresses. Therefore, the accurate detection and evaluation of its tensile property are crucial.
[0004] The existing tensile testing devices clamp and fix both ends of the film through clamps, and then conduct tensile testing on the film. However, basically all such clamps are tightened by the operator rotating the threaded rod to drive the clamping block to move, and the distance between the two clamps also needs to be adjusted to test the tensile properties at different lengths. Therefore, the entire adjustment and clamping process is relatively cumbersome, resulting in low test efficiency. Summary of the Utility Model
[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a PVC film strength tensile testing device, which solves the problem that the entire adjustment and clamping process of the existing tensile testing device is relatively cumbersome, resulting in low test efficiency.
[0006] The above technical purpose of the utility model is achieved through the following technical solutions: A PVC film strength tensile testing device includes a support frame. A first cylinder is arranged at the top of the support frame. A moving platform is arranged on the telescopic end of the first cylinder. A first clamp is arranged at the bottom of the moving platform. A corresponding second clamp is arranged below the first clamp on the support frame. The second clamp has the same structure as the first clamp. A distance sensor is arranged on the second clamp, and the distance sensor is electrically connected to the first cylinder. The first clamp includes a mounting seat. A second cylinder is arranged inside the mounting seat. A cross bar is arranged on the telescopic end of the second cylinder. Vertical bars are symmetrically arranged on the cross bar. Slopes are arranged at the ends of the two vertical bars away from the cross bar. Moving blocks are symmetrically arranged on the left and right sides of the mounting seat. Guide rods are arranged on the sides of the two moving blocks away from each other. The guide rods penetrate through the mounting seat, and a return spring is fixedly abutted between the guide rods and the mounting seat. Fixed blocks that are in contact with the slopes are arranged on the moving blocks. Clamping blocks are arranged on the sides of the two moving blocks close to each other. Infrared sensors are arranged beside the clamping blocks on the moving blocks, and the infrared sensors are electrically connected to the second cylinder.
[0007] The present utility model is further configured such that: rollers are relatively fixed on the fixed block, and the rollers are in contact with the inclined surface.
[0008] The present utility model is further configured such that: a limiting block is fixedly sleeved on the guide rod, and when the return spring is in a normal state, the limiting block abuts against the inner wall of the mounting seat.
[0009] The present utility model is further configured such that: fixing rods are symmetrically and slidably penetrated through both ends of the moving table, and the upper ends of the fixing rods are fixedly connected to the top of the support frame.
[0010] The present utility model is further configured such that: both ends of the cross bar are respectively in sliding fit with the inner walls on both sides of the mounting seat.
[0011] The present utility model is further configured such that: an anti-slip layer is provided on the clamping surface of the clamping block.
[0012] In summary, the present utility model has the following beneficial effects:
[0013] By setting the first cylinder and the distance sensor, the distance between the first fixture and the second fixture is accurately adjusted to adapt to the length of the PVC film to be detected. When the PVC film is placed between the two clamping blocks, the infrared sensor receives the signal and controls the movement of the second cylinder. The movement of the cross bar drives the inclined surface on the vertical rod to push the fixed block, and then drives the two clamping blocks to approach synchronously, clamping the PVC film from both sides, thus avoiding the cumbersome manual repeated adjustment of clamping and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 FIG. is a schematic diagram of the overall structure of the stretching test device of the present utility model, showing the structural features of the support frame, the moving table, the first fixture and the second fixture of the present utility model;
[0015] Figure 2 is Figure 1 An enlarged view of part A of, showing the structural features of the vertical rod, the moving block, the guide rod and the clamping block of the present utility model.
[0016] In the figure: 1, support frame; 2, first cylinder; 3, moving table; 4, first fixture; 5, second fixture; 6, distance sensor; 7, mounting seat; 8, second cylinder; 9, cross bar; 10, vertical rod; 11, inclined surface; 12, moving block; 13, guide rod; 14, return spring; 15, fixed block; 16, clamping block; 17, infrared sensor; 18, roller; 19, limiting block; 20, fixing rod; 21, anti-slip layer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0019] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0020] The present utility model will be described in detail below with reference to the accompanying drawings.
[0021] Referring to Figure 1 - Figure 2 , a PVC film strength tensile test device includes a support frame 1. A first cylinder 2 is fixedly provided at the top of the support frame 1. A moving table 3 is fixedly provided at the telescopic end of the first cylinder 2. A first clamp 4 is fixedly provided at the bottom of the moving table 3. A corresponding second clamp 5 is provided below the first clamp 4 on the support frame 1. The second clamp 5 has the same structure as the first clamp 4. A distance sensor 6 is fixedly provided on the second clamp 5. The distance sensor 6 is electrically connected to the first cylinder 2. The first clamp 4 includes a mounting seat 7. A second cylinder 8 is fixedly provided inside the mounting seat 7. A cross bar 9 is fixedly provided at the telescopic end of the second cylinder 8. Vertical bars 10 are symmetrically fixed on the cross bar 9. Inclined surfaces 11 are provided at the ends of the two vertical bars 10 away from the cross bar 9. Moving blocks 12 are symmetrically provided on the left and right sides of the mounting seat 7. Guide rods 13 are fixedly provided on the sides of the two moving blocks 12 away from each other. The guide rods 13 penetrate through the mounting seat 7, and a return spring 14 is fixedly abutted between the guide rods 13 and the mounting seat 7. Fixed blocks 15 that are in contact with the inclined surfaces 11 are fixedly provided on the moving blocks 12. Clamping blocks 16 are fixedly provided on the sides of the two moving blocks 12 close to each other. An infrared sensor 17 is fixedly provided beside the clamping block 16 on the moving block 12. The infrared sensor 17 is electrically connected to the second cylinder 8.
[0022] A roller 18 is relatively fixed on the fixed block 15. The roller 18 abuts against the inclined surface 11 and can rotate flexibly, converting the sliding friction between the inclined surface 11 and the fixed block 15 into the rolling friction between the inclined surface 11 and the roller 18, greatly reducing the wear between the inclined surface 11 and the fixed block 15.
[0023] A limit block 19 is fixedly sleeved on the guide rod 13. When the return spring 14 is in a normal state, the limit block 19 abuts against the inner wall of the mounting seat 7. During the process that the return spring 14 is no longer extruded and elastically recovers to drive the movement of the guide rod 13, the guide rod 13 is limited, so that the fixed block 15 is in a preset position, ensuring that the inclined surface 11 can smoothly push the fixed block 15 again during movement.
[0024] Fixing rods 20 are symmetrically and slidably penetrated through both ends of the moving table 3. The upper ends of the fixing rods 20 are fixedly connected to the top of the support frame 1, improving the smoothness of the movement of the moving table 3 and thus increasing the smoothness of the first clamp 4.
[0025] Both ends of the cross bar 9 are respectively in sliding fit with the inner walls on both sides of the mounting seat 7, thereby limiting the reciprocating movement of the cross bar 9 and enabling it to move more stably.
[0026] An anti-slip layer 21 is arranged on the clamping surface of the clamping block 16. The anti-slip layer 21 adopts a rubber pad. The rubber material has good friction performance, which can prevent the PVC film from slipping between the clamping block 16 during the tensile test and affecting the test data.
[0027] Working principle: When the device is in use, first, according to the length of the PVC film to be detected, the distance between the first clamp 4 and the second clamp 5 is accurately adjusted through the first cylinder 2 and the distance sensor 6. Then, both ends of the PVC film are respectively placed between the two clamping blocks 16 of the first clamp 4 and between the two clamping blocks 16 of the second clamp 5. The infrared sensor 17 senses that the film is placed and transmits this signal to the second cylinder 8. The second cylinder 8 extends to drive the cross bar 9 to move, and the vertical rod 10 moves accordingly, causing the inclined surface 11 to push the fixed block 15. The two fixed blocks 15 move towards each other. The guide rod 13 moves under the drive of the fixed block 15 and compresses the return spring 14. The fixed block 15 drives the two clamping blocks 16 on the other side of the moving block 12 to approach synchronously, clamping the PVC film from both sides. After both ends of the PVC film are clamped, the first cylinder 2 drives the first clamp 4 to move upward, and then the tensile test of the PVC film can be carried out. After the test is completed, the second cylinder 8 retracts, then the vertical rod 10 no longer pushes the fixed block 15, the return spring 14 is no longer extruded, and under the action of its own elastic recovery, it drives the two clamping blocks 16 to move away from each other, thereby releasing the PVC film.
[0028] The utility model precisely adjusts the distance between the first clamp 4 and the second clamp 5 through the provided first cylinder 2 and distance sensor 6 to adapt to the length of the PVC film to be detected. When the PVC film is placed between the two clamping blocks 16, the infrared sensor 17 receives a signal and controls the movement of the second cylinder 8. The movement of the cross bar 9 drives the inclined plane 11 on the vertical rod 10 to push the fixed block 15, thereby driving the two clamping blocks 16 to approach synchronously and clamping the PVC film from both sides, thus avoiding the cumbersome manual repeated adjustment of clamping and improving the testing efficiency.
[0029] The first cylinder 2, distance sensor 6, second cylinder 8 and infrared sensor 17 of the utility model are all electrically connected to the controller to achieve coordinated control work. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the utility model is mainly used to protect mechanical devices, so the control method and circuit connection of the utility model will not be explained in detail.
[0030] The above are only the preferred embodiments of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions falling within the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.
Claims
1. A PVC film strength tensile testing device, comprising a support frame (1), characterized in that: The support frame (1) is provided with a first cylinder (2) at the top, a movable platform (3) is provided at the telescopic end of the first cylinder (2), a first clamp (4) is provided at the bottom of the movable platform (3), and the support frame (1) is provided with a corresponding second clamp (5) below the first clamp (4), the second clamp (5) has the same structure as the first clamp (4), a distance sensor (6) is provided on the second clamp (5), and the distance sensor (6) is electrically connected to the first cylinder (2); the first clamp (4) includes a mounting seat (7), a second cylinder (8) is provided in the mounting seat (7), a cross bar (9) is provided at the telescopic end of the second cylinder (8), and vertical bars (10) are symmetrically provided on the cross bar (9), and two The ends of the vertical rods (10) away from the cross rods (9) are each provided with an inclined surface (11); the left and right sides of the mounting seat (7) are symmetrically provided with moving blocks (12); the sides of the two moving blocks (12) away from each other are each provided with a guide rod (13); the guide rod (13) penetrates the mounting seat (7); a return spring (14) is fixedly abutted between the guide rod (13) and the mounting seat (7); a fixed block (15) abutting against the inclined surface (11) is provided on the moving block (12); the sides of the two moving blocks (12) close to each other are each provided with a clamping block (16); and the moving block (12) is provided with an infrared sensor (17) next to the clamping block (16); and the infrared sensor (17) is electrically connected to the second cylinder (8).
2. A PVC film strength tensile testing device according to claim 1, characterized in that: A roller (18) is relatively fixed on the fixed block (15), and the roller (18) is in contact with the inclined surface (11).
3. A PVC film strength tensile testing device according to claim 1, characterized in that: A limit block (19) is fixedly sleeved on the guide rod (13); when the return spring (14) is in a normal state, the limit block (19) abuts against the inner wall of the mounting seat (7).
4. A PVC film strength tensile testing device according to claim 1, characterized in that: Fixed rods (20) are symmetrically slidably penetrated at both ends of the movable platform (3), and the upper ends of the fixed rods (20) are fixedly connected to the top of the support frame (1).
5. A PVC film strength tensile testing device according to claim 1, characterized in that: The two ends of the cross bar (9) are respectively fitted and slid with the inner walls on both sides of the mounting seat (7).
6. A PVC film strength tensile testing device according to claim 1, characterized in that: An anti-slip layer (21) is provided on the clamping surface of the clamping block (16).