A device for detecting the high temperature resistance of a modified plastic part

Abstract

The utility model discloses a kind of for modified plastic piece high temperature resistance detection device, including mounting plate, the inner wall of mounting plate is rotatably installed with mounting shaft, the outer wall of mounting shaft is fixedly connected with rotating disc, the upper surface of rotating disc is perforated with three arc grooves, the inner wall of three arc grooves is slidably connected with driven wheel, the end of driven wheel away from arc groove is rotatably connected with connecting plate, the side of connecting plate away from mounting shaft is fixedly connected with heating assembly, three arc grooves are annular array distribution, the side of mounting plate close to rotating disc is fixedly connected with three guide tracks, the utility model is rotated by speed-regulating motor drive mounting shaft, rotating disc is driven to rotate, driven wheel moves in arc groove, and then connecting plate and heating assembly are driven to move along guide track radial direction, the position of heating assembly can be flexibly adjusted according to different sizes of modified plastic piece sample, ensure that different sizes sample is heated evenly, improve the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to the field of polymer material testing technology, and in particular to a device for testing the high temperature resistance of modified plastic parts. Background Technology

[0002] Modified plastic parts are plastic products made from general-purpose or engineering plastics as the base material and endowed with new properties through physical or chemical methods (such as filling, blending, reinforcement, flame retardant modification, etc.). Their core goal is to overcome the performance limitations of raw materials, such as improving heat resistance, impact resistance, flame retardancy, or reducing shrinkage, in order to meet the stringent requirements of home appliances, automobiles, electronics and other fields.

[0003] Traditional high-temperature resistance testing devices for modified plastic parts mainly consist of a testing chamber, a heating system, a sample fixing and loading mechanism, and a control system. The testing chamber has an internal testing cavity for placing the sample. The chamber design must meet insulation and sealing requirements. The heating system consists of heating plates installed on the inner wall of the testing cavity, using resistance heating or infrared heating for temperature control. Some devices employ multi-zone independent heating to improve uniformity. The sample fixing and loading mechanism uses a small motor to drive a rotating disc, rotating the sample to achieve uniform heating in conjunction with the heating system. A pressure sensor and pressure plate are installed on the top, applying axial tensile load to the sample pneumatically or electrically. The control system integrates a temperature control module, a load application module, and a data acquisition module, supporting test parameter setting and result output. Its working principle is as follows: a standard sample (e.g., dumbbell-shaped) is placed in the testing cavity, heated to the target temperature by the heating system, and held at that temperature for 15-20 minutes to ensure uniform temperature throughout the sample. After the holding period, a telescopic cylinder applies an axial tensile load to the sample at a constant rate until fracture. The pressure sensor and displacement sensor record the force and displacement data in real time, calculating parameters such as tensile strength and elongation at break.

[0004] However, traditional high-temperature resistance testing devices for modified plastic parts still face many problems in actual use. For example, the heating plate installed on the inner wall of the testing chamber is usually fixed. When heating modified plastic parts of different sizes, the heating position cannot be flexibly adjusted, making it difficult to ensure that the samples of different sizes are heated evenly.

[0005] Therefore, this utility model proposes a device for testing the high temperature resistance of modified plastic parts to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a device for testing the high-temperature resistance of modified plastic parts, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a device for testing the high-temperature resistance of modified plastic parts, comprising a mounting plate, an mounting shaft rotatably mounted on the inner wall of the mounting plate, a rotating disk fixedly connected to the outer wall of the mounting shaft, three arc-shaped grooves penetrating the upper surface of the rotating disk, driven wheels slidably connected to the inner walls of the three arc-shaped grooves, a connecting plate rotatably connected to the end of the driven wheel away from the arc-shaped groove, and a heating component fixedly connected to the side of the connecting plate away from the mounting shaft.

[0008] Preferably, the three arc-shaped grooves are arranged in a circular array, and three guide rails are fixedly connected to the side of the mounting plate near the rotating disk, and the three guide rails are arranged in a circular array.

[0009] Preferably, the inner walls of the three guide rails are slidably connected to guide slides, the side of the guide slide away from the guide rail is fixedly connected to the side of the connecting plate near the mounting plate, and the side of the mounting plate away from the guide rail is fixedly connected to a mounting sleeve.

[0010] Preferably, a speed-regulating motor is fixedly installed inside the mounting sleeve, and the output end of the speed-regulating motor is fixedly connected to the side of the mounting shaft away from the rotating disk. Three fixing lugs are fixedly connected to the outer surface of the mounting sleeve. The three fixing lugs are arranged in a circular array, and each of the three fixing lugs has a through mounting hole on its upper surface.

[0011] Preferably, the heating assembly includes a mounting base fixedly connected to the side of the connecting plate away from the mounting shaft, the upper surface of the mounting base having a mounting groove, and a connecting block being inserted into the inner wall of the mounting groove.

[0012] Preferably, an arc-shaped heating plate is fixedly connected to the side of the connecting plug away from the mounting groove, and a threaded groove is opened through the inner wall of the mounting groove, with a threaded rod threadedly connected to the inner wall of the threaded groove.

[0013] Preferably, the outer surface of the connecting plug has a through slot for the threaded rod to pass through. A knob is fixedly connected to the end of the threaded rod away from the threaded slot. Three rotating plates are fixedly connected to the outer wall of the knob, and the three rotating plates are arranged in a ring array.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention uses a speed-regulating motor to drive the mounting shaft to rotate, which in turn drives the rotating disk to rotate, causing the driven wheel to move within the arc-shaped groove. This, in turn, drives the connecting plate and heating assembly to move radially along the guide track. The position of the heating assembly can be flexibly adjusted according to the modified plastic sample of different sizes, ensuring uniform heating of samples of different sizes and improving the accuracy of the test results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the arc-shaped groove structure of this utility model; Figure 3 This is a schematic diagram of the mounting sleeve structure of this utility model; Figure 4 This is a schematic diagram of the heating component structure of this utility model; Figure 5 This is a three-dimensional disassembled structural diagram of the arc-shaped heating plate and the mounting base of this utility model.

[0016] In the diagram: 1. Mounting plate; 2. Guide rail; 3. Guide slide; 4. Connecting plate; 5. Heating assembly; 501. Mounting base; 502. Arc-shaped heating plate; 503. Knob; 504. Mounting groove; 505. Threaded rod; 506. Threaded groove; 507. Connecting block; 6. Rotating disc; 7. Driven wheel; 8. Mounting shaft; 9. Arc-shaped groove; 10. Mounting sleeve; 11. Fixed ear plate; 12. Mounting hole; 13. Speed-regulating motor. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Please see Figures 1 to 5 This utility model provides a technical solution: a device for testing the high temperature resistance of modified plastic parts, including a mounting plate 1, an mounting shaft 8 rotatably mounted on the inner wall of the mounting plate 1, for connecting a rotating disk 6 and a speed-regulating motor 13, which plays the role of transmitting power so that the speed-regulating motor 13 can drive the rotating disk 6 to rotate, the rotating disk 6 is fixedly connected to the outer wall of the mounting shaft 8, and three arc-shaped grooves 9 are opened through the upper surface of the rotating disk 6 to provide a specific path for the movement of the driven wheel 7, so that the driven wheel 7 can move according to a certain pattern, thereby driving the connecting plate 4 to move synchronously, the driven wheel 7 is slidably connected to the inner wall of the three arc-shaped grooves 9, which plays the role of transmitting the rotational motion of the rotating disk 6, converting the rotation of the rotating disk 6 into the radial movement of the connecting plate 4, the end of the driven wheel 7 away from the arc-shaped groove 9 is rotatably connected to the connecting plate 4, connecting the driven wheel 7 and the heating component 5, transmitting the movement of the driven wheel 7 to the heating component 5, driving the heating component 5 to move, and the heating component 5 is fixedly connected to the side of the connecting plate 4 away from the mounting shaft 8; Three arc-shaped grooves 9 are arranged in a circular array. Three guide rails 2 are fixedly connected to the side of the mounting plate 1 closest to the rotating disk 6. These guide rails 2, arranged in a circular array, provide tracks for the movement of the guide slide 3, ensuring the stability of the connecting plate 4 and allowing it to move only radially. Guide slides 3 are slidably connected to the inner walls of each of the three guide rails 2. The side of the guide slide 3 furthest from the guide rail 2 is fixedly connected to the side of the connecting plate 4 closest to the mounting plate 1. A mounting sleeve 10 is fixedly connected to the side of the mounting plate 1 furthest from the guide rail 2 for mounting... The variable speed motor 13 is used to mount the entire device on the detection device through the fixed ear plate 11 and the mounting hole 12. The variable speed motor 13 is fixedly installed inside the mounting sleeve 10. The variable speed motor 13 is connected to the control system signal of the detection device to provide power for the rotation of the rotating disk 6. The output end of the variable speed motor 13 is fixedly connected to the side of the mounting shaft 8 away from the rotating disk 6. Three fixed ear plates 11 are fixedly connected to the outer surface of the mounting sleeve 10. The three fixed ear plates 11 are arranged in a ring array. The upper surface of each of the three fixed ear plates 11 is provided with a mounting hole 12.

[0019] In actual use, the mounting sleeve 10 is first securely installed in the testing device using bolts or other fasteners through the mounting holes 12 on the fixed ear plate 11. When it is necessary to heat modified plastic sample of different sizes, the position of the heating component 5 is adjusted according to the sample size. The speed-regulating motor 13 is started through the control system of the testing device. The speed-regulating motor 13 drives the mounting shaft 8 to rotate, thereby driving the rotating disk 6 to rotate. The driven wheel 7 moves synchronously in the arc groove 9 with the rotation of the rotating disk 6. Since the driven wheel 7 is rotatably connected to the connecting plate 4, and the connecting plate 4 is slidably connected to the guide rail 2 through the guide slide 3, under the guidance of the guide rail 2, the three connecting plates 4 move synchronously radially along the guide rail 2, thereby driving the three sets of heating components 5 to move synchronously radially, so that the heating components 5 move to the appropriate position to adapt to the modified plastic sample of different sizes.

[0020] The heating assembly 5 includes a mounting base 501 fixedly connected to the side of the connecting plate 4 away from the mounting shaft 8. The upper surface of the mounting base 501 has a mounting groove 504, and a connecting block 507 is inserted into the inner wall of the mounting groove 504. An arc-shaped heating plate 502 is fixedly connected to the side of the connecting block 507 away from the mounting groove 504. A threaded groove 506 is opened through the inner wall of the mounting groove 504, and a threaded rod 505 is threadedly connected to the inner wall of the threaded groove 506. A fixed through groove is opened through the outer surface of the connecting block 507 to facilitate the threaded rod 505 to pass through. A knob 503 is fixedly connected to the end of the threaded rod 505 away from the threaded groove 506. Three rotating plates are fixedly connected to the outer wall of the knob 503. The three rotating plates are arranged in a circular array to facilitate the operator to hold and rotate, thereby rotating the threaded rod 505 and realizing the assembly and disassembly of the arc-shaped heating plate 502.

[0021] In actual use, if the arc-shaped heating plate 502 needs to be replaced, the operator holds the rotating plate and turns the knob 503 to drive the threaded rod 505 to rotate until it disengages from the fixed through groove on the connecting plug 507. Then, the arc-shaped heating plate 502 is pulled to pull the connecting plug 507 out of the mounting groove 504. Next, the connecting plug 507 of the new arc-shaped heating plate 502 is inserted into the mounting groove 504. The knob 503 is turned in the opposite direction to make the threaded rod 505 rotate and pass through the fixed through groove and screw into the threaded groove 506, thus completing the replacement of the arc-shaped heating plate 502.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the high-temperature resistance of modified plastic parts, comprising a mounting plate (1), wherein a mounting shaft (8) is rotatably mounted on the inner wall of the mounting plate (1), characterized in that: A rotating disk (6) is fixedly connected to the outer wall of the mounting shaft (8). Three arc-shaped grooves (9) are opened through the upper surface of the rotating disk (6). A driven wheel (7) is slidably connected to the inner wall of each of the three arc-shaped grooves (9). A connecting plate (4) is rotatably connected to the end of the driven wheel (7) away from the arc-shaped groove (9). A heating component (5) is fixedly connected to the side of the connecting plate (4) away from the mounting shaft (8).

2. The device for testing the high-temperature resistance of modified plastic parts according to claim 1, characterized in that: The three arc-shaped grooves (9) are arranged in a ring array. The mounting plate (1) is fixedly connected to three guide rails (2) on the side near the rotating disk (6). The three guide rails (2) are arranged in a ring array.

3. The device for testing the high-temperature resistance of modified plastic parts according to claim 2, characterized in that: The inner walls of the three guide rails (2) are slidably connected with guide slides (3). The side of the guide slide (3) away from the guide rail (2) is fixedly connected to the side of the connecting plate (4) near the mounting plate (1). The side of the mounting plate (1) away from the guide rail (2) is fixedly connected with a mounting sleeve (10).

4. The device for testing the high-temperature resistance of modified plastic parts according to claim 3, characterized in that: A speed-regulating motor (13) is fixedly installed inside the mounting sleeve (10). The output end of the speed-regulating motor (13) is fixedly connected to the side of the mounting shaft (8) away from the rotating disk (6). Three fixing lugs (11) are fixedly connected to the outer surface of the mounting sleeve (10). The three fixing lugs (11) are arranged in a ring array. The upper surface of each of the three fixing lugs (11) is provided with a mounting hole (12).

5. The device for testing the high-temperature resistance of modified plastic parts according to claim 1, characterized in that: The heating assembly (5) includes a mounting base (501) fixedly connected to the side of the connecting plate (4) away from the mounting shaft (8). The upper surface of the mounting base (501) is provided with a mounting groove (504), and a connecting plug (507) is inserted into the inner wall of the mounting groove (504).

6. The device for testing the high-temperature resistance of modified plastic parts according to claim 5, characterized in that: An arc-shaped heating plate (502) is fixedly connected to the side of the connecting plug (507) away from the mounting groove (504). A threaded groove (506) is provided through the inner wall of the mounting groove (504), and a threaded rod (505) is threadedly connected to the inner wall of the threaded groove (506).

7. The device for testing the high-temperature resistance of modified plastic parts according to claim 6, characterized in that: The outer surface of the connecting plug (507) is provided with a fixed through groove to facilitate the passage of the threaded rod (505). A knob (503) is fixedly connected to one end of the threaded rod (505) away from the threaded groove (506). Three rotating plates are fixedly connected to the outer wall of the knob (503), and the three rotating plates are arranged in a ring array.

Images