PVA (Polyvinyl Alcohol) gel bead film tensile test device

Abstract

The utility model relates to the field of testing devices, in particular to a PVA (Polyvinyl Alcohol) gel bead film stretching testing device which comprises a constant-temperature box, sliding grooves are formed in the two sides of the inner side wall of the constant-temperature box, sliding blocks are arranged in the sliding grooves in a sliding connection manner, a first fixing plate is fixedly arranged between the two sliding blocks, and telescopic rods are arranged at the lower ends of the sliding blocks; the two sides of the bottom of the first fixing plate are fixedly provided with abutting plates, the lower end of the middle of the first fixing plate is provided with a hydraulic rod, the lower end of the hydraulic rod is connected with a first connecting plate, the lower portion of the first connecting plate is fixedly provided with a second connecting plate, the bottom of the second connecting plate is fixedly provided with a bottom plate, and the lower end of the bottom plate is provided with a pressing head. And a temperature sensor is arranged in the constant-temperature box. According to the utility model, the inside of the constant-temperature box can be detected and tested at any time through the arranged temperature sensor, and the mechanical characteristic test effect on the film clamped by the upper clamp and the lower clamp under different constant temperature conditions can be realized.

Description

Technical Field

[0001] The utility model relates to the field of testing devices, and particularly relates to a PVA pearl film tensile testing device. Background Art

[0002] A film is a thin and soft transparent sheet. It is made of plastics, adhesives, rubbers or other materials. The scientific explanation of polyester film is: a two-dimensional material formed by depositing atoms, molecules or ions on the surface of a substrate. For example, optical films, composite films, superconducting films, polyester films, nylon films, plastic films, etc. Films are widely used in industries such as electronic appliances, machinery, printing, etc.

[0003] The mechanical properties of materials refer to the mechanical characteristics shown by materials when they are subjected to various external loads (tensile, compressive, bending, torsional, impact, alternating stress, etc.) under different environments (temperature, medium, humidity). For example, during the production of products such as plastic films, composite materials, and soft packaging materials, performance tests such as tensile, peel, deformation, tear, heat seal, adhesion, puncture force, opening force, low-speed unwinding force, and prying force are required.

[0004] The Chinese patent discloses a film tensile testing fixture (authorization publication number CN 213337100 U). This patented technology can perform film tensile testing, and at the same time, it is convenient to reverse the support column, making it convenient for storage, and it is also convenient to fix the film, etc., bringing a better application prospect. However, for different temperature conditions, the mechanical characteristics of these products are different. Existing testers are difficult to perform such tests, and a complete and objective evaluation cannot be achieved only from the width and thickness, resulting in a certain degree of deviation in the judgment of the film tensile performance.

[0005] Therefore, the technical personnel in this field provide a PVA pearl film tensile testing device to solve the problems raised in the above background art. Content of the Utility Model

[0006] To solve the above technical problems, the utility model provides a PVA pearl film tensile testing device, which includes a constant temperature box. Both sides of the inner side wall of the constant temperature box are provided with chutes. Sliders are slidably connected inside the chutes. A first fixing plate is fixedly arranged between the two sliders. An expansion rod is arranged at the lower end of the slider. Two abutting plates are fixedly arranged on both sides of the bottom of the first fixing plate. A hydraulic rod is arranged at the lower middle part of the first fixing plate. The lower end of the hydraulic rod is connected with a first connecting plate. A second connecting plate is tightly arranged at the lower part of the first connecting plate. A bottom plate is fixed at the bottom of the second connecting plate. A pressure head is arranged at the lower end of the bottom plate. A temperature sensor is arranged inside the constant temperature box.

[0007] Preferably: a base is provided at the bottom of the thermostatic box, fixed blocks are provided at the four corners of the lower end of the base, anti-slip pads are provided at the lower ends of the fixed blocks, controllers are provided on the left and right outer walls of the thermostatic box, and a rotating block is rotatably provided at the front of the thermostatic box.

[0008] Preferably: a box door is arranged at the right end of the rotating block, a pull ring 1 is arranged at the front of the box door, a rotating column is arranged at the top of the thermostatic box for rotation connection, a cover plate is arranged at one end of the rotating column, the cover plate is arranged for sealing the thermostatic box, and a pull ring 2 is fixedly arranged on the outer side of the cover plate.

[0009] Preferably: the abutment plate is arranged in an "L" shape, and through holes are provided at the four corners of the connecting plate 1 and the connecting plate 2, and fixing bolts are provided inside the through holes, and the number of the fixing bolts is four and they are symmetrically arranged. The pressure head is arranged in an arc shape, and two fixing plates 2 are arranged at the bottom of the fixing plate 1 inside the thermostat. A groove body is provided inside the fixing plate 2, and a deformation plate is fixedly arranged inside the groove body.

[0010] Preferably: an electrical connection is set between the temperature sensor and the controller, and the controller is also electrically connected to the telescopic rod and the hydraulic rod to improve the convenience of use. The electrical equipment is powered by the controller, and the user can control the raising and lowering of the telescopic rod and the hydraulic rod through the controller. The above is an existing well-known technology and will not be elaborated on.

[0011] Preferably: a partition is provided inside the thermostatic box, a collection frame is provided at the bottom of the partition by being pulled out, a pull ring three is fixed to the outer side of the collection frame, and the collection frame can be used to store and process articles, and has good practicality.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model can test the interior of the thermostat at any time by means of the temperature sensor, and can achieve the effect of testing the mechanical characteristics of the film clamped by the upper and lower clamps under different constant temperature conditions.

[0014] 2. The film to be tested can be clamped and fixed by squeezing the film between the plates with the pressure head, and then the film is squeezed by the pressure head at the lower end to deform the film. The deformation amount of the film can be selected according to the required test content, and the fracture or tearing data of the film can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a PVA bead film stretching test device provided in an embodiment of the present application. Figure 1 ;

[0016] Figure 2It is a schematic structural diagram of a PVA bead film tensile testing device provided by an embodiment of the present application Figure 2 ;

[0017] Figure 3 It is a schematic structural diagram of a PVA bead film tensile testing device provided by an embodiment of the present application Figure 3 ;

[0018] Figure 4 It is a schematic structural diagram of a PVA bead film tensile testing device provided by an embodiment of the present application Figure 4 ;

[0019] Figure 5 It is a schematic structural diagram of a fixing plate and a groove body in a PVA bead film tensile testing device provided by an embodiment of the present application;

[0020] Figure 6 It is a schematic structural diagram of a telescopic rod, a fixing plate, a bottom plate and a hydraulic rod in a PVA bead film tensile testing device provided by an embodiment of the present application;

[0021] Figure 7 It is a PVA bead film tensile testing device provided by an embodiment of the present application Figure 5 Schematic structural diagram at position A in;

[0022] Figure 8 It is a PVA bead film tensile testing device provided by an embodiment of the present application Figure 6 Schematic structural diagram at position B in.

[0023] In the figure: 1, constant temperature box; 2, base; 3, fixing block; 4, anti-slip pad; 5, controller; 6, rotating block; 7, box door; 8, pull ring one; 9, rotating column; 10, cover plate; 11, pull ring two; 12, sliding groove; 13, slider; 14, telescopic rod; 15, fixing plate one; 16, abutting plate; 17, hydraulic rod; 18, connecting plate one; 19, connecting plate two; 20, fixing bolt; 21, bottom plate; 22, pressing head; 23, fixing plate two; 24, groove body; 25, deformation plate; 26, temperature sensor; 27, partition board; 28, collection frame; 29, pull ring three. Detailed implementation manners

[0024] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes. Example 1

[0025] See also Figures 1 to 8 In this embodiment, a PVA bead film stretching test device is provided, including a constant temperature box 1, a base 2 is arranged at the bottom of the constant temperature box 1, and fixed blocks 3 are arranged at the four corners of the lower end of the base 2, and a non-slip pad 4 is arranged at the lower end of the fixed block 3. A controller 5 is arranged on the left and right outer walls of the constant temperature box 1. A rotating block 6 is rotatably arranged at the front of the constant temperature box 1, and a box door 7 is arranged at the right end of the rotating block 6. A pull ring 8 is arranged at the front of the box door 7. A rotating column 9 is rotatably connected to the top of the constant temperature box 1, and a cover plate 10 is arranged at one end of the rotating column 9. The cover plate 1 The thermostat 1 is sealed, a pull ring 11 is fixedly provided on the outer side of the cover plate 10, a slide groove 12 is provided on both sides of the inner wall of the thermostat 1, a slider 13 is provided in the inner sliding connection of the slide groove 12, a fixed plate 15 is fixedly provided between the two sliders 13, a telescopic rod 14 is provided at the lower end of the slider 13, a stop plate 16 is fixedly provided on both sides of the bottom of the fixed plate 15, and the stop plate 16 is provided in an "L" shape, a hydraulic rod 17 is provided at the lower end of the middle of the fixed plate 15, and the lower end of the hydraulic rod 17 is connected to the A connecting plate 18 is provided, and a connecting plate 2 19 is fastened to the lower part of the connecting plate 18. Through holes are provided at the four corners of the connecting plate 18 and the connecting plate 2 19. Fixing bolts 20 are provided inside the through holes. The number of the fixing bolts 20 is four and they are symmetrically arranged. A bottom plate 21 is fixed to the bottom of the connecting plate 2 19. A pressure head 22 is provided at the lower end of the bottom plate 21. The pressure head 22 is arranged in an arc shape. Two fixing plates 23 are provided at the bottom of the fixing plate 15 provided inside the thermostat 1. The fixing plates A groove 24 is provided inside the second 23, and a deformation plate 25 is fixedly provided inside the groove 24. A temperature sensor 26 is provided inside the thermostat 1, and an electrical connection is provided between the temperature sensor 26 and the controller 5. The controller 5 is also electrically connected to the telescopic rod 14 and the hydraulic rod 17 to improve the convenience of use. The electrical equipment is powered by the controller 5, and the user can control the raising and lowering of the telescopic rod 14 and the hydraulic rod 17 through the controller 5. The above is a known technology and will not be described in detail.

[0026] Inside the incubator 1, a partition 27 is provided. A collection box 28 is slidably arranged at the bottom of the partition 27. A third pull ring 29 is fixed to the outer side of the collection box 28. The collection box 28 can be used to store items, which has good practicability. When in use, first place the incubator 1 at the place where it is needed. Place the film to be tested on the groove 24 of the second fixing plate 23 and the deformation plate 25. Operate the set pressure plate 16 and the pressing head 22. Turn on the controller 5. The controller 5 drives the set telescopic rod 14 and the hydraulic rod 17 to lift and lower the pressing head 22 and the pressure plate 16, so that both ends of the film are firmly fixed inside the groove 24, and the pressing head 22 contacts the film. By squeezing the film between the pressing head 22 and the pressure plate 16, the film to be tested can be clamped and fixed. Then, the film is deformed by squeezing the film with the lower pressing head 22, so that the amount of deformation of the film can be selected according to the required test content, and the data of the fracture or tear of the film can be tested. During the test, the inside of the incubator 1 can be detected at any time through the set temperature sensor, and the mechanical characteristic test effect of the film clamped by the upper and lower clamps can be realized under different constant temperature conditions. When it is necessary to disassemble the pressing head 22, just rotate the fixing bolt 20 counterclockwise and disassemble the fixing bolt 20 from the first connecting plate 18 and the second connecting plate 19.

[0027] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special description and limitation.

Claims

1. A PVA bead film tensile testing device, comprising a constant temperature box (1), characterized in that: The thermostatic box (1) has a slide groove (12) on both sides of the inner side wall, a slider (13) is slidably connected inside the slide groove (12), a fixed plate (15) is fixedly arranged between the two sliders (13), a telescopic rod (14) is arranged at the lower end of the slider (13), and abutment plates (16) are fixedly arranged on both sides of the bottom of the fixed plate (15), a hydraulic rod (17) is arranged at the lower end of the middle part of the fixed plate (15), a connecting plate (18) is connected to the lower end of the hydraulic rod (17), a connecting plate (19) is fastened to the lower part of the connecting plate (18), a bottom plate (21) is fixed to the bottom of the connecting plate (19), a pressure head (22) is arranged at the lower end of the bottom plate (21), and a temperature sensor (26) is arranged inside the thermostatic box (1).

2. A PVA bead film stretching test device according to claim 1, characterized in that: A base (2) is provided at the bottom of the thermostatic box (1), and fixing blocks (3) are provided at the four corners of the lower end of the base (2), and an anti-slip pad (4) is provided at the lower end of the fixing block (3).

3. A PVA bead film stretching test device according to claim 1, characterized in that: The left and right outer side walls of the thermostatic box (1) are both provided with controllers (5), and a rotating block (6) is rotatably provided at the front of the thermostatic box (1).

4. A PVA bead film stretching test device according to claim 3, characterized in that: A box door (7) is arranged at the right end of the rotating block (6), a pull ring (8) is arranged at the front of the box door (7), and a rotating column (9) is arranged at the top of the thermostatic box (1) for rotation connection.

5. A PVA bead film stretching test device according to claim 4, characterized in that: A cover plate (10) is provided at one end of the rotating column (9), and the cover plate (10) is provided to seal the thermostatic box (1). A second pull ring (11) is fixedly provided on the outer side of the cover plate (10).

6. A PVA bead film stretching test device according to claim 1, characterized in that: The abutment plate (16) is arranged in an "L" shape, and through holes are provided at the four corners of the first connecting plate (18) and the second connecting plate (19). Fixing bolts (20) are inserted into the through holes and connected thereto. The fixing bolts (20) are four in number and are arranged symmetrically with each other.

7. A PVA bead film stretching test device according to claim 6, characterized in that: The pressure head (22) is arranged in an arc shape, and two fixing plates (23) are arranged at the bottom of the fixing plate (1) arranged inside the thermostatic box (1).

8. A PVA bead film stretching test device according to claim 7, characterized in that: A groove body (24) is provided inside the second fixing plate (23), and a deformation plate (25) is fixedly arranged inside the groove body (24).

9. A PVA bead film stretching test device according to claim 1, characterized in that: The temperature sensor and the controller (5) are electrically connected to each other, and the controller (5) is also electrically connected to the telescopic rod (14) and the hydraulic rod (17).

10. A PVA bead film stretching test device according to claim 1, characterized in that: The thermostatic box (1) is provided with a partition (27) inside, a collection frame (28) is provided at the bottom of the partition (27) by being drawn out, and a pull ring (29) is fixed to the outer side of the collection frame (28).

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