Tool for plastic environment resistance test experiment

Abstract

The utility model discloses a tool for a plastic environment resistance test experiment, which belongs to the technical field of test equipment and comprises an environment resistance test machine, a shaft lever is arranged at the center of a test chamber, a partition component is arranged on the shaft lever, and the test chamber is divided into a high-temperature chamber and a low-temperature chamber through the partition component. A heater and a refrigerator are installed in the high-temperature chamber and the low-temperature chamber respectively, and two clamping assemblies are arranged on the shaft rod. The output end of the servo motor drives the shaft rod to rotate by 180 degrees, so that the clamping assemblies in the high-temperature chamber and the low-temperature chamber and plastic plate samples clamped on the clamping assemblies are mutually switched, and the plastic plate samples subjected to a high-temperature resistance test are rapidly switched into the low-temperature chamber for a low-temperature resistance test; the operation of taking and repeatedly clamping the plastic plate sample in the workpiece switching environment test process is omitted, so that the overall test efficiency is effectively improved, and the operation of stretching hands into high and low temperature environments is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a tooling for testing the environmental resistance of plastics. Background Technology

[0002] High and low temperature environmental durability testing of plastic sheets is a crucial step in evaluating the performance stability of plastic sheets under extreme temperature conditions. This test simulates extreme high and low temperature environments, exposing the plastic sheets to prolonged exposure to observe their physical and chemical changes at different temperatures. In high-temperature testing, the plastic sheets undergo expansion and softening processes, and testers record dimensional changes, strength loss, and the appearance of cracks or deformation. In low-temperature testing, the plastic sheets may face risks such as embrittlement and cracking; the test aims to assess their cold resistance and toughness at low temperatures. Through high and low temperature environmental durability testing, a comprehensive understanding of the adaptability of plastic sheets under different temperature conditions can be obtained, providing a scientific basis for product design and application, and also helping manufacturers optimize material formulations and improve the temperature resistance of plastic sheets.

[0003] Existing high and low temperature environmental durability testing equipment typically includes a high-temperature chamber and a low-temperature chamber. Internally, these chambers mainly consist of control, refrigeration, heating control, sensors, and air circulation systems. The control system, as the core of the equipment, coordinates the work of each component based on preset environmental data to ensure efficient and accurate testing. The refrigeration and heating systems in the high-temperature and low-temperature chambers use compressors and electric heating elements to precisely regulate the temperature within the testing chambers, covering a wide range from extremely low to extremely high temperatures. When testing plastic sheet samples, existing high and low temperature environmental durability testing equipment typically places the samples in both chambers for high and low temperature durability testing. After the high-temperature durability test, the samples are usually manually removed and transferred to the low-temperature chamber for low-temperature durability testing. Similarly, after the low-temperature durability test, the samples are usually manually removed and transferred to the high-temperature chamber for high-temperature durability testing. This removal and transfer operation is cumbersome and inconvenient, affecting testing convenience and overall efficiency. Furthermore, the manual removal and transfer process can cause discomfort to the hands.

[0004] Therefore, it is necessary to provide a tooling for testing the environmental resistance of plastics to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a tooling for testing the environmental resistance of plastics, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following solution to the aforementioned technical problems: A fixture for testing the environmental resistance of plastics includes an environmental resistance testing machine. The environmental resistance testing machine has a test chamber inside. A cover plate is hinged to the outer wall of the environmental resistance testing machine to close the test chamber. A shaft is located at the center of the test chamber and rotates through the side wall of the test chamber. A servo motor is fixed to the outer wall of the environmental resistance testing machine. The output end of the servo motor is fixed to one end of the shaft. A partition assembly is provided on the shaft, dividing the test chamber into a high-temperature chamber and a low-temperature chamber. A heater and a cooler are respectively installed inside the high-temperature chamber and the low-temperature chamber. Two sets of clamping assemblies are provided on the shaft, and the two sets of clamping assemblies are respectively placed inside the high-temperature chamber and the low-temperature chamber.

[0007] As a further embodiment of this utility model, the separating assembly includes a separating plate fixed to the side of the shaft and located inside the test chamber. Two separating plates are provided and the two separating plates are symmetrically distributed. A heat insulation layer is attached to the surface of the separating plate.

[0008] As a further embodiment of this utility model, rubber rings are attached and fixed to the four sides of the partition plate and are in close contact with the side wall of the test chamber. Multiple support plates are fixed at the bottom of the environmental tolerance testing machine in a symmetrical distribution.

[0009] As a further embodiment of this utility model, the clamping assembly includes a connecting rod fixed to the side of the shaft, a concave clamping seat fixed to the end of the connecting rod away from the shaft, a threaded rod threadedly connected to one side wall of the concave clamping seat, and a clamping plate fixed to the end of the threaded rod that extends into the concave clamping seat.

[0010] As a further embodiment of this utility model, a rotating head is fixed on one end of the threaded rod located outside the concave clamp, and multiple convex ribs arranged in a ring are provided on the side of the rotating head.

[0011] As a further embodiment of this utility model, rubber pads are attached and fixed to the side of the clamping plate away from the threaded rod and the side of the concave clamping seat corresponding to the clamping plate.

[0012] As a further embodiment of this utility model, a handle is fixed on the outer side wall of the cover plate, and a rubber sleeve is fitted onto the surface of the handle.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: After the plastic sheet samples in the high-temperature chamber and low-temperature chamber have completed the high-temperature and low-temperature resistance tests respectively, the servo motor is started to work. The output end of the servo motor drives the shaft to rotate 180 degrees, thereby enabling the clamping components and the plastic sheet samples clamped on the clamping components in the high-temperature chamber and low-temperature chamber to switch between each other. This allows the plastic sheet samples that have completed the high-temperature resistance test to quickly switch to the low-temperature chamber for low-temperature resistance testing, and the plastic sheet samples that have completed the low-temperature resistance test to quickly switch to the high-temperature chamber for high-temperature resistance testing. This eliminates the need to pick up and repeatedly clamp the plastic sheet samples during the workpiece switching test environment, effectively improving the convenience of switching plastic sheet samples for testing, thereby effectively improving the overall testing efficiency, greatly reducing the need for manual operation in high and low temperature environments, and effectively improving the protection of operators. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the test chamber of this utility model;

[0017] Figure 3 This is a partial structural diagram of the servo motor of this utility model;

[0018] Figure 4 This is a schematic diagram of the separator component structure of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Separator assembly; 101. Separator plate; 102. Rubber ring; 2. Clamping assembly; 201. Connecting rod; 202. Concave clamp; 203. Clamping plate; 204. Rubber pad; 205. Threaded rod; 206. Rotary head; 3. Environmental tolerance testing machine; 4. Cover plate; 5. Handle; 6. Support plate; 7. Test chamber; 8. Shaft; 9. Heater; 10. Cooler; 11. Servo motor; 12. High temperature chamber; 13. Low temperature chamber. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Please see Figure 1-5This utility model provides a tooling for testing the environmental resistance of plastics, including an environmental resistance testing machine 3. The environmental resistance testing machine 3 has a testing chamber 7 inside. A cover plate 4 is hinged to the outer wall of the environmental resistance testing machine 3 to close the testing chamber 7. A shaft 8 is located at the center of the testing chamber 7 and rotates through the side wall of the testing chamber 7. A servo motor 11 is fixed to the outer wall of the environmental resistance testing machine 3, and the output end of the servo motor 11 is fixed to one end of the shaft 8. A partition component 1 is provided on the shaft 8, dividing the testing chamber 7 into a high-temperature chamber 12 and a low-temperature chamber 13. A heater 9 and a cooler 10 are respectively installed inside the high-temperature chamber 12 and the low-temperature chamber 13. Electric heating tubes and condenser tubes are respectively installed on the heater 9 and the cooler 10. Two sets of clamping assemblies 2 are installed on the shaft 8, and the two sets of clamping assemblies 2 are respectively placed inside the high-temperature chamber 12 and the low-temperature chamber 13. In use, the cover plate 4 is opened, allowing two plastic sheet workpieces to be tested to be inserted one end into the two sets of clamping assemblies 2 through the opening of the test chamber 7. The clamping assemblies 2 securely hold one end of the plastic sheet workpiece, thus achieving stable placement of the plastic sheet workpiece inside the test chamber 7. Similarly, multiple sets of clamping assemblies 2 can be set to clamp and place multiple plastic sheet samples. Then, the cover plate 4 is closed, creating a closed space inside the test chamber 7. The heater 9 and the cooler 10 are then activated, thereby stimulating the high-temperature chamber 12 and the low-temperature chamber 13 respectively. The space within the environmental tolerance testing machine 3 is heated and cooled. Temperature sensors are installed inside both the high-temperature chamber 12 and the low-temperature chamber 13. A thermometer electrically connected to the temperature sensors is fixed to the outer wall of the machine. The temperature sensors monitor the temperatures inside the high-temperature chamber 12 and the low-temperature chamber 13 and transmit the data to the thermometers, thus adjusting the temperatures inside the high-temperature chamber 12 and the low-temperature chamber 13 to the set temperatures. The high-temperature chamber 12 and the low-temperature chamber 13 are independently separated by a partition component 1, creating high-temperature and low-temperature environments respectively. This allows the plastic sheet samples inside the high-temperature chamber 12 and the low-temperature chamber 13 to undergo environmental tolerance testing. When the plastic sheet samples inside the high-temperature chamber 12 and the low-temperature chamber 13 have completed their respective tests... After completing the high-temperature and low-temperature resistance tests, the servo motor 11 is activated. The output of the servo motor 11 drives the shaft 8 to rotate 180 degrees, thereby allowing the clamping components 2 and the plastic sheet samples held on the clamping components 2 in the high-temperature chamber 12 and low-temperature chamber 13 to switch between each other. This enables the plastic sheet samples that have completed the high-temperature resistance test to be quickly switched to the low-temperature chamber 13 for low-temperature resistance testing, and the plastic sheet samples that have completed the low-temperature resistance test to be quickly switched to the high-temperature chamber 12 for high-temperature resistance testing. This eliminates the need to pick up and repeatedly clamp the plastic sheet samples during the workpiece switching testing process, effectively improving the convenience of switching plastic sheet samples for testing, thereby effectively improving the overall testing efficiency, greatly reducing the need for manual operation in high and low temperature environments, and effectively improving the protection of operators.

[0024] Further as Figure 1 , Figure 2 and Figure 4 As shown, it is worth noting that the partition assembly 1 includes a partition plate 101 fixed to the side of the shaft 8 and located inside the test chamber 7. There are two partition plates 101, and the two partition plates 101 are symmetrically distributed. The surface of the partition plate 101 is covered with a heat insulation layer. In actual operation, the two partition plates 101 are used to divide the interior of the test chamber 7 into a high temperature chamber 12 and a low temperature chamber 13, forming a high and low temperature space environment.

[0025] Further as Figure 2 and Figure 4 As shown, it is worth noting that rubber rings 102 are fixedly attached to the four sides of the partition plate 101 and the rubber rings 102 are in close contact with the side wall of the test chamber 7. Multiple support plates 6 are fixedly arranged symmetrically at the bottom of the environmental tolerance testing machine 3. In actual operation, the gap between the partition plate 101 and the side wall of the test chamber 7 is sealed by the rubber rings 102, so that the high temperature chamber 12 and the low temperature chamber 13 have a good separation effect.

[0026] Further as Figure 2 , Figure 4 and Figure 5 As shown, it is worth noting that the clamping assembly 2 includes a connecting rod 201 fixed to the side of the shaft 8. A concave clamp 202 is fixed to the end of the connecting rod 201 away from the shaft 8. A threaded rod 205 is threadedly connected to one side wall of the concave clamp 202. A clamping plate 203 is fixed to the end of the threaded rod 205 that extends into the concave clamp 202. In actual operation, one end of the plastic sheet workpiece is inserted into the concave clamp 202, and by rotating the threaded rod 205, the plastic sheet workpiece inside the concave clamp 202 is clamped by the clamping plate 203, thus completing the placement of the plastic sheet workpiece in the high temperature chamber 12 or the low temperature chamber 13.

[0027] This solution includes the following working process: One end of the plastic sheet workpiece is inserted into the concave clamp 202, and the plastic sheet workpiece inside the concave clamp 202 is clamped by the clamping plate 203 by rotating the threaded rod 205, thus completing the placement of the plastic sheet workpiece in the high-temperature chamber 12 or the low-temperature chamber 13. Then, the cover plate 4 is closed, so that the interior of the test chamber 7 forms a closed space. The heater 9 and the cooler 10 heat the space inside the high-temperature chamber 12 and the low-temperature chamber 13 respectively. The high-temperature chamber 12 and the low-temperature chamber 13 are separated by the partition plate 101. The independent separation allows the high-temperature chamber 12 and the low-temperature chamber 13 to form high-temperature and low-temperature environments respectively, enabling the plastic sheet samples inside the high-temperature chamber 12 and the low-temperature chamber 13 to undergo environmental high and low temperature resistance tests. After the plastic sheet samples in the high-temperature chamber 12 and the low-temperature chamber 13 have completed the high-temperature and low-temperature resistance tests respectively, the servo motor 11 is started to work. The output end of the servo motor 11 drives the shaft 8 to rotate 180 degrees, thereby allowing the plastic sheet samples in the high-temperature chamber 12 and the low-temperature chamber 13 to switch between each other, eliminating the need to pick up and repeatedly clamp the plastic sheet samples during the workpiece switching environment test.

[0028] Further as Figure 5 As shown, it is worth noting that a screw head 206 is fixed on one end of the threaded rod 205 outside the concave clamp 202. The screw head 206 has multiple ribs arranged in a ring on its side. In actual operation, the screw head 206 can be used to easily rotate the threaded rod 205, making operation convenient.

[0029] Further as Figure 5 As shown, it is worth noting that rubber pads 204 are attached and fixed to the side of the clamping plate 203 away from the threaded rod 205 and the side of the concave clamping seat 202 corresponding to the clamping plate 203. In actual operation, the rubber pads 204 effectively increase the friction of the clamping plate 203 on the plastic sample, thereby improving the clamping stability.

[0030] Further as Figure 1 As shown, it is worth noting that a handle 5 is fixed on the outer wall of the cover plate 4, and a rubber sleeve is fitted on the surface of the handle 5; in actual operation, the cover plate 4 can be easily opened and closed by pulling the handle 5.

[0031] In summary: By driving the shaft 8 to rotate 180 degrees through the output of the servo motor 11, the clamping components 2 and the plastic sheet samples held on the clamping components 2 in the high-temperature chamber 12 and the low-temperature chamber 13 can be switched between each other. This allows plastic sheet samples that have completed high-temperature resistance testing to be quickly switched to the low-temperature chamber 13 for low-temperature resistance testing, and plastic sheet samples that have completed low-temperature resistance testing to be quickly switched to the high-temperature chamber 12 for high-temperature resistance testing. This eliminates the need to pick up and repeatedly clamp plastic sheet samples during the workpiece switching testing process, effectively improving the convenience of switching plastic sheet samples for testing, thereby effectively improving the overall testing efficiency, greatly reducing the need for personnel to put their hands into high and low temperature environments for operation, and effectively improving the protection of operators.

[0032] The heater 9, cooler 10 and servo motor 11 can be purchased from the market. The heater 9, cooler 10 and servo motor 11 are equipped with power supplies. This is a mature technology in the field and has been fully disclosed. Therefore, it will not be described again in the specification.

Claims

1. A fixture for testing the environmental resistance of plastics, comprising an environmental resistance testing machine (3), characterized in that, The environmental tolerance testing machine (3) has a test chamber (7) inside. A cover plate (4) is hinged to the outer wall of the environmental tolerance testing machine (3) to cover the test chamber (7). A shaft (8) is set at the center of the test chamber (7) and the shaft (8) rotates through the side wall of the test chamber (7). A servo motor (11) is fixed on the outer wall of the environmental tolerance testing machine (3). The output end of the servo motor (11) is fixed to one end of the shaft (8). A partition component (1) is set on the shaft (8) and the test chamber (7) is divided into a high-temperature chamber (12) and a low-temperature chamber (13) by the partition component (1). A heater (9) and a cooler (10) are installed in the high-temperature chamber (12) and the low-temperature chamber (13) respectively. Two sets of clamping components (2) are set on the shaft (8) and the two sets of clamping components (2) are placed in the high-temperature chamber (12) and the low-temperature chamber (13) respectively.

2. The fixture for testing the environmental resistance of plastics according to claim 1, characterized in that, The partition assembly (1) includes a partition plate (101) fixed to the side of the shaft (8) and located inside the test chamber (7). There are two partition plates (101) and the two partition plates (101) are symmetrically distributed. The surface of the partition plate (101) is covered with a heat insulation layer.

3. The fixture for testing the environmental resistance of plastics according to claim 2, characterized in that, Rubber rings (102) are attached and fixed to the four sides of the partition plate (101), and the rubber rings (102) are in close contact with the side wall of the test chamber (7). Multiple support plates (6) are fixed at the bottom of the environmental tolerance tester (3).

4. The fixture for testing the environmental resistance of plastics according to claim 1, characterized in that, The clamping assembly (2) includes a connecting rod (201) fixed to the side of the shaft (8). A concave clamp (202) is fixed to the end of the connecting rod (201) away from the shaft (8). A threaded rod (205) is threadedly connected to one side wall of the concave clamp (202). A clamping plate (203) is fixed to the end of the threaded rod (205) that extends into the concave clamp (202).

5. The fixture for testing the environmental resistance of plastics according to claim 4, characterized in that, The threaded rod (205) has a screw head (206) fixed on one end outside the concave clamp (202), and the screw head (206) has multiple ribs arranged in a ring on its side.

6. The fixture for testing the environmental resistance of plastics according to claim 5, characterized in that, Rubber pads (204) are attached and fixed to the side of the clamping plate (203) away from the threaded rod (205) and the side of the concave clamping seat (202) corresponding to the clamping plate (203).

7. The fixture for testing the environmental resistance of plastics according to claim 1, characterized in that, A handle (5) is fixed on the outer wall of the cover plate (4), and a rubber sleeve is fitted onto the surface of the handle (5).

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