Hard plastic high temperature tensile fixture

Abstract

This utility model discloses a high-temperature tensile fixture for rigid plastics, including a mounting base and a fixture seat. An electric telescopic rod is located below one end of the mounting base, and the electric telescopic rod is connected to a tensile testing structure via a U-shaped connecting rod. The fixture seat is located above the other end of the mounting base, and a hot air blower is installed on the fixture seat to heat the rigid plastic fixed inside the fixture seat. The other end of the tensile testing structure is connected to a sliding fixture inside the fixture seat. By driving the electric telescopic rod, the tensile testing structure is moved, thereby performing a tensile test on the rigid plastic. This utility model directly heats the fixture seat through a built-in hot air blower, providing a controllable and uniform high-temperature testing environment for the rigid plastic sample. It can realistically simulate the mechanical properties of materials under actual high-temperature conditions, solving the problem of traditional fixtures being unable to heat synchronously or unevenly during testing.

Description

Technical Field

[0001] This utility model relates to a tension clamp, specifically a high-temperature tension clamp for rigid plastic. Background Technology

[0002] Traditional tensile testing fixtures are typically used for testing at room temperature or with an external furnace for overall environmental heating. External heating methods have low thermal efficiency, slow temperature rise, and difficulty in accurately and uniformly heating the specimen at the clamping points, thus failing to accurately reflect the mechanical properties of rigid plastics in specific high-temperature application environments.

[0003] The surface properties of rigid plastics may change when heated. Traditional mechanical clamps are prone to slippage, loosening, or even premature breakage of samples at high temperatures due to insufficient clamping force or decreased friction, which cannot ensure the effective transmission of tensile force and seriously affects the accuracy and reliability of test results.

[0004] If the entire testing mechanism is placed inside a high-temperature chamber, it is difficult for operators to observe the real-time phenomena such as deformation, necking, and fracture of the sample during the tensile process at close range and clearly, making it impossible to accurately capture the yield point, which leads to deviations or omissions in the recording of key data.

[0005] Traditional testing methods may require heating the sample to a predetermined temperature in a high-temperature chamber before transferring it to a tensile testing device. During this process, the sample temperature will drop, making it impossible to guarantee that the test is conducted under constant temperature conditions. The process is cumbersome and the data is distorted. The entire system consists of multiple separate devices, resulting in low automation and inconvenient operation. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a high-temperature tensile clamp for rigid plastics, so as to solve the problems existing in the background art.

[0007] This utility model of a rigid plastic high-temperature tensile clamp is achieved through the following technical solution, including a mounting base and a clamp seat; An electric telescopic rod is provided at one end of the mounting base, and the electric telescopic rod is connected to the tensile test structure through a U-shaped connecting rod. The clamp seat is located above the other end of the mounting base, and a hot air blower is provided on the clamp seat to heat the rigid plastic fixed inside the clamp seat. The other end of the tensile testing structure is connected to a sliding clamp in the fixture seat. By driving the electric telescopic rod, the tensile testing structure is moved to perform a tensile test on the rigid plastic.

[0008] As a preferred technical solution, the fixture seat has a hollow interior forming a fixed cavity, and a cover plate is rotatably provided on the top of the fixture seat; a movable fixture is slidably provided at one end of the fixed cavity, and a fixed fixture is provided at the other end of the fixed cavity; the two ends of the rigid plastic are respectively fixed to the movable fixture and the fixed fixture; The sliding clamp has a movable rod on its back, which passes through one end of the clamp seat and is connected to the tensile testing structure. The output shaft of the electric telescopic rod drives the tensile testing structure, thereby realizing the tensile testing of rigid plastics.

[0009] As a preferred technical solution, the movable fixture includes a sliding clamping seat and a first clamping plate; The sliding clamping seat has a first clamping cavity on its inner side, and a first clamping plate is disposed in the first clamping cavity. An adjusting screw is disposed above the first clamping plate via a bearing, and the threaded end of the adjusting screw is threadedly connected to the locking hole of the sliding clamping seat. By rotating the adjusting screw, the first clamping plate is driven to clamp one end of the rigid plastic. A sliding block is disposed at the bottom of the sliding clamping seat, and a corresponding sliding groove is disposed in the fixed cavity. The sliding clamping seat slides in the fixed cavity via the sliding block and the sliding groove. A guide rod is disposed at one end of the sliding clamping seat, and the guide rod passes through the clamping seat and is connected to the tensile testing structure.

[0010] As a preferred technical solution, the fixing fixture includes a fixing clamping seat and a second clamping plate; The inner side of the fixed clamping seat is provided with a second clamping cavity, and the second clamping plate is disposed in the second clamping cavity; an adjusting screw is provided above the second clamping plate through a bearing, and the threaded end of the adjusting screw is threadedly connected to the locking hole of the fixed clamping seat. By rotating the adjusting screw, the second clamping plate is driven to clamp the other end of the hard plastic.

[0011] As a preferred technical solution, the tensile testing structure includes a tensile gauge and a hook disposed at the end of the tensile gauge; one end of the tensile gauge is fixed to a connecting rod, and the other end of the tensile gauge is provided with a hook, which is connected to a guide rod to realize the function of tensile testing.

[0012] As a preferred technical solution, a control panel is also included, which is connected to control the electric telescopic rod and the hot air blower to perform the operation, thereby realizing the tensile test under high temperature conditions.

[0013] As a preferred technical solution, the front of the fixture is provided with a viewing window, through which the deformation of the rigid plastic is observed, and the value on the tensile tester is observed at this time, thereby realizing the function of tensile testing.

[0014] The beneficial effects of this utility model are: This invention directly heats the fixture seat by using a built-in hot air blower, providing a controllable and uniform high-temperature testing environment for rigid plastic samples. It can realistically simulate the mechanical properties of materials under actual high-temperature conditions, solving the problem that traditional fixtures cannot heat synchronously or heat unevenly during the testing process.

[0015] Both the movable and fixed clamps of this utility model adopt a mechanical clamping method in which the clamping plate is driven by adjusting screws. The clamping force is large and stable, which can effectively prevent the hard plastic sample from slipping or loosening at high temperature, ensure the accuracy of the force axis during the tensile process, and improve the test accuracy.

[0016] The tensile force of this invention is smoothly and directly transmitted to the sample through a transmission system consisting of an electric telescopic rod, a connecting rod, a force gauge, and a movable rod. The force value is measured accurately in real time by the force gauge, ensuring the accuracy of data acquisition.

[0017] The front viewing window of this invention allows researchers to clearly observe the entire process of deformation and fracture of the sample at high temperature without interfering with the testing environment, and can accurately record the force value at the moment of yielding. Attached Figure Description

[0018] 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.

[0019] Figure 1 and Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the opening structure of this utility model; Figure 4 This is a schematic diagram of the movable clamp structure of this utility model; Figure 5 This is a schematic diagram of the fixing structure of this utility model; Figure 6 This is a schematic diagram of the structure of the fixed clamping seat of this utility model;

[0020] 1. Mounting base; 2. Clamp seat; 3. Connecting rod; 4. Hot air blower; 5. Fixed cavity; 6. Cover plate; 7. Movable clamp; 8. Fixed clamp; 9. Movable rod; 10. Sliding clamp seat; 11. First clamping plate; 12. First clamping cavity; 13. Adjusting screw; 14. Sliding block; 15. Slide groove; 16. Fixed clamp seat; 17. Second clamping plate; 18. Second clamping cavity; 19. Tensile gauge; 20. Hook; 21. Viewing window. Detailed Implementation

[0021] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] like Figures 1-5 As shown, the present invention provides a rigid plastic high-temperature tensile clamp, which includes a mounting base 1 and a clamp seat 2. An electric telescopic rod is provided at one end of the mounting base 1, and the electric telescopic rod is connected to the tensile test structure through a U-shaped connecting rod 3. The clamp seat 2 is located above the other end of the mounting base 1, and a hot air blower 4 is provided on the clamp seat 2 to heat the rigid plastic fixed inside the clamp seat 2. The other end of the tensile testing structure is connected to the sliding clamp in the clamp seat 2. By driving the electric telescopic rod, the tensile testing structure is moved to perform a tensile test on the rigid plastic.

[0023] The clamp base 2 has a hollow interior forming a fixed cavity 5, and a cover plate 6 is rotatably installed on the top of the clamp base 2; a movable clamp 7 is slidably installed at one end of the fixed cavity 5, and a fixed clamp 8 is installed at the other end of the fixed cavity 5; the two ends of the rigid plastic are respectively fixed to the movable clamp 7 and the fixed clamp 8. The sliding clamp is provided with a movable rod 9 on the back, and the movable rod 9 passes through one end of the clamp seat 2 and is connected to the tensile test structure. The output shaft of the electric telescopic rod drives the tensile test structure, thereby realizing the tensile test of hard plastic.

[0024] The movable clamp 7 includes a sliding clamping seat 10 and a first clamping plate 11; The sliding clamping seat 10 has a first clamping cavity 12 on its inner side, and a first clamping plate 11 is disposed in the first clamping cavity 12. An adjusting screw 13 is disposed above the first clamping plate 11 via a bearing, and the threaded end of the adjusting screw 13 is threadedly connected to the locking hole of the sliding clamping seat 10. By rotating the adjusting screw 13, the first clamping plate 11 is driven to clamp one end of the hard plastic. A sliding block 14 is disposed at the bottom of the sliding clamping seat 10, and a corresponding slide groove 15 is disposed in the fixed cavity 5. The sliding clamping seat 10 slides in the fixed cavity 5 through the sliding block 14 and the slide groove 15. The movable rod 9 is disposed at one end of the sliding clamping seat 10, and the movable rod 9 passes through the clamping seat 2 and is connected to the tensile testing structure.

[0025] The fixing fixture 8 includes a fixing clamping seat and a second clamping plate 17; The inner side of the fixed clamping seat is provided with a second clamping cavity 18, and the second clamping plate 17 is disposed in the second clamping cavity 18; an adjusting screw 13 is provided above the second clamping plate 17 through a bearing, and the threaded end of the adjusting screw 13 is threadedly connected to the locking hole of the fixed clamping seat. By rotating the adjusting screw 13, the second clamping plate 17 is driven to clamp the other end of the hard plastic.

[0026] The tensile testing structure includes a tension gauge 19 and a hook 20 disposed at the end of the tension gauge 19. One end of the tension gauge 19 is fixed to the connecting rod 3, and the other end of the tension gauge 19 is provided with a hook 20, which is connected to the guide rod through the hook 20, thereby realizing the function of tensile testing.

[0027] For ease of control, this embodiment also includes a control panel, which is connected to control the electric telescopic rod and the hot air blower 4 to perform the operation, thereby realizing the tensile test under high temperature conditions.

[0028] In addition, a viewing window 21 is provided on the front of the fixture 2. The viewing window 21 is used to observe when the rigid plastic deforms and to observe the value on the tensile gauge 19 at this time, thereby realizing the function of tensile testing.

[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A rigid plastic high-temperature tensile clamp, characterized in that, Includes a mounting base (1) and a clamp base (2); An electric telescopic rod is provided below one end of the mounting base (1), and the electric telescopic rod is connected to the tensile test structure through a U-shaped connecting rod (3); The clamp seat (2) is located above the other end of the mounting base (1), and a hot air blower (4) is provided on the clamp seat (2) to heat the rigid plastic fixed inside the clamp seat (2). The other end of the tensile test structure is connected to the sliding clamp in the clamp seat (2). By driving the electric telescopic rod, the tensile test structure is driven to perform a tensile test on the hard plastic.

2. The rigid plastic high-temperature tensile fixture according to claim 1, characterized in that: The clamp seat (2) is hollow inside to form a fixed cavity (5), and a cover plate (6) is rotatably provided on the top of the clamp seat (2); a movable clamp (7) is slidably provided at one end of the fixed cavity (5), and a fixed clamp (8) is provided at the other end of the fixed cavity (5); the two ends of the hard plastic are respectively fixed on the movable clamp (7) and the fixed clamp (8); The sliding clamp has a movable rod (9) on its back, and the movable rod (9) passes through one end of the clamp seat (2) and is connected to the tensile test structure. The output shaft of the electric telescopic rod drives the tensile test structure, thereby realizing the tensile test of the hard plastic.

3. The rigid plastic high-temperature tensile fixture according to claim 2, characterized in that: The movable clamp (7) includes a sliding clamping seat (10) and a first clamping plate (11); The sliding clamping seat (10) has a first clamping cavity (12) on its inner side, and a first clamping plate (11) is disposed in the first clamping cavity (12). An adjusting screw (13) is disposed above the first clamping plate (11) via a bearing, and the threaded end of the adjusting screw (13) is threadedly connected to the locking hole of the sliding clamping seat (10). By rotating the adjusting screw (13), the first clamping plate (11) is driven to clamp one end of the hard plastic. A sliding block (14) is disposed at the bottom of the sliding clamping seat (10), and a corresponding groove (15) is disposed in the fixed cavity (5). The sliding clamping seat (10) slides in the fixed cavity (5) through the sliding block (14) and the groove (15). The movable rod (9) is disposed at one end of the sliding clamping seat (10), and the movable rod (9) passes through the clamping seat (2) and is connected to the tensile test structure.

4. The rigid plastic high-temperature tensile fixture according to claim 2, characterized in that: The fixing clamp (8) includes a fixing clamping seat and a second clamping plate (17); The inner side of the fixed clamping seat is provided with a second clamping cavity (18), and the second clamping plate (17) is provided in the second clamping cavity (18); an adjusting screw (13) is provided above the second clamping plate (17) through a bearing, and the threaded end of the adjusting screw (13) is threadedly connected to the locking hole of the fixed clamping seat. By rotating the adjusting screw (13), the second clamping plate (17) is driven to clamp the other end of the hard plastic.

5. The rigid plastic high-temperature tensile fixture according to claim 1, characterized in that: The tensile testing structure includes a tension gauge (19) and a hook (20) set at the end of the tension gauge (19); one end of the tension gauge (19) is fixed to the connecting rod (3), and the other end of the tension gauge (19) is provided with a hook (20), which is connected to the guide rod through the hook (20) to realize the function of tensile testing.

6. The rigid plastic high-temperature tensile clamp according to claim 1, characterized in that: It also includes a control panel, which is connected to control the electric telescopic rod and the hot air blower (4) to perform the operation, thereby realizing the tensile test under high temperature conditions.

7. The rigid plastic high-temperature tensile clamp according to claim 1, characterized in that: The clamp base (2) has a viewing window (21) on its front side. Through the viewing window (21), one can observe when the rigid plastic deforms and observe the value on the tension gauge (19) at this time, thereby realizing the function of tensile testing.

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