A device for detecting thermal stability of plastic products

Abstract

The present invention discloses a device for detecting thermal stability of plastic products, and relates to the technical field of plastic product detection. The present invention comprises a device body, wherein a door panel is hingedly connected to the front side of the device body, a heating assembly is arranged at the bottom of the inner wall of the device body, a placement table is fixed inside the device body, a real-time monitoring device is arranged above the placement table, and the real-time monitoring device comprises a U-shaped frame, wherein the U-shaped frame is fixed to the top of the device body, a pressure gauge is embedded in the top of the U-shaped frame, and a hollow cylinder is fixed at the bottom of the U-shaped frame. The present invention, through the setting of the real-time monitoring device, enables the T-shaped plug rod and the hollow cylinder to cooperate with the detection end of the pressure gauge to monitor the pressure change inside the hollow cylinder in real time, and the staff can judge the heating and softening of the plastic product by observing the value of the pressure gauge, thereby facilitating the staff to timely evaluate the durability and reliability of the plastic material at high temperature.

Description

Technical Field

[0001] The invention relates to the technical field of plastic product detection, in particular to a plastic product thermal stability detection device. Background Art

[0002] The thermal stability test device for plastic products is used to evaluate the performance changes of plastic materials under high temperature environments. It mainly tests the heat resistance, morphological changes, degradation rate and other indicators of plastics under heating conditions. By simulating the temperature changes in actual use, it helps to determine the service life and environmental adaptability of plastic products, and ensure their quality and reliability. It is often used in the fields of plastic research and development, quality control and material selection.

[0003] The Chinese patent with patent announcement number CN213689440U discloses a heat resistance performance testing device for plastic tableware, including: a testing device; a top cover, a top cover is provided at the rear of the top of the testing device; a controller, a controller is provided at one end of the testing device; a heater, a heater is provided at the front end inner cavity of the testing device; a turntable, a turntable is provided at the top of the inner end of the testing device. The heat resistance performance testing device for plastic tableware fixes the tableware to the top of the turntable through a clamping mechanism, and is convenient to install and disassemble; through the cooperation of two motors, the tableware at the heating port rotates at a uniform speed for one circle, which can ensure that the surface of the tableware is subjected to heat resistance testing, which is conducive to the credibility of subsequent screening and has strong practicality.

[0004] However, the current detection device has the following problems: when the detection device is used to detect the thermal stability of plastic products, it is not convenient to observe the softening of the plastic products during heating in real time. For some plastics with high requirements for thermal stability at high temperatures, it is very important to observe the softening during the heating process in real time. If the softening process cannot be monitored in real time, the signs of early softening of the material will be missed, and the durability and reliability of the plastic material at high temperatures cannot be evaluated in time, which in turn affects the selection and application of the material. Therefore, we propose a thermal stability detection device for plastic products. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for detecting thermal stability of plastic products, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a plastic product thermal stability detection device, including a device body, a door panel is hinged on the front side of the device body, a heating component is arranged at the bottom of the inner wall of the device body, a placement table is fixed inside the device body, a real-time monitoring device is arranged above the placement table, and the real-time monitoring device includes a U-shaped frame, the U-shaped frame is fixed to the top of the device body, a pressure gauge is embedded in the top of the U-shaped frame, a hollow cylinder is fixed at the bottom of the U-shaped frame, the bottom of the hollow cylinder passes through the top of the device body, and a T-shaped plug rod is slidably installed inside the hollow cylinder , and a spring is provided between the T-shaped plug rod and the inner wall of the hollow cylinder, and the T-shaped plug rod passes through the bottom of the inner wall of the hollow cylinder, and a lifting plate is fixed at the outer wall below the T-shaped plug rod. Under the action of the spring force corresponding to the T-shaped plug rod, the T-shaped plug rod will exert pressure on the top surface of the plastic product. When the plastic product is heated and softened, since the T-shaped plug rod applies force downward, the T-shaped plug rod has a tendency to move downward. The T-shaped plug rod moves downward along the inside of the hollow cylinder, and the internal pressure of the hollow cylinder changes. The detection end of the pressure gauge will monitor the pressure changes inside the hollow cylinder in real time. The staff can judge the heating and softening of the plastic product by observing the value of the pressure gauge.

[0007] According to the above technical solution, the real-time monitoring device also includes a fixing frame and a triangular plate. The fixing frame is fixed to the lower outer wall of the T-shaped plug rod. A U-shaped sliding rod is slidably installed on one side of the fixing frame, and a spring is provided between the U-shaped sliding rod and the fixing frame. A scraper is fixed to the bottom of the U-shaped sliding rod. The top surface of the scraper is on the same horizontal line as the bottom surface of the T-shaped plug rod. A resistance rod is fixed to one side of the scraper. The triangular plate is fixed to the top of the inner wall of the device body, and the bottom of the triangular plate is arranged to be gradually inclined from the center of the device body to the side wall of the device body. The triangular plate is located directly above the resistance rod, the top of the resistance rod is circular, the inclined surface of the triangular plate is located on the circular motion trajectory of the resistance rod, and each time the T-shaped plug rod is lifted upward, the T-shaped plug rod drives the fixing frame to move upward, and the fixing frame drives the scraper and the resistance rod to move upward through the U-shaped slide bar. When the resistance rod moves to the inclined surface position of the triangular plate, the inclined surface of the triangular plate pushes the resistance rod to drive the scraper to move in the direction of the T-shaped plug rod, and the spring corresponding to the U-shaped slide bar is compressed, and the movement of the scraper will scrape off the gelatinous residue of plastic products adhered to the bottom surface of the T-shaped plug rod.

[0008] According to the above technical solution, a uniformizing device is arranged under the placing table, and the uniformizing device includes a rotating rod 1, which is rotatably installed inside the device body, and is driven by a motor, and the motor is fixed on the outer wall of the device body. A plurality of fan blades are fixed to the outside of the rotating rod 1, and the rotating rod 1 is driven by the motor to rotate, and the rotating rod 1 drives the fan blades to rotate, and the fan blades will fan the hot air inside the device body, thereby ensuring that the hot air inside the device body is quickly and evenly distributed.

[0009] According to the above technical scheme, the uniformity device also includes two partitions, two fixed wheels 1, two elastic telescopic rods, and two rotating rods 2. The two partitions are respectively fixed on both sides of the inner wall of the device body, and a limiting rod is fixed between the front and rear sides of the two partitions. The two rotating rods 2 are respectively rotatably installed on both sides of the inner wall of the device body, and a spiral spring is provided between the rotating rod 2 and the inner wall of the device body. The rotating rod 2 is located below the partition, and a thermal insulation curtain is fixed on the outside of the two rotating rods 2. A slide plate is fixed on the end of the two thermal insulation curtains away from the rotating rod 2, and the slide plate is slidably installed between the two limiting rods. A spring is provided between the tops of the two slide plates, and a sliding groove is provided on the top of the slide plate. The two fixed wheels 1 are respectively fixed on both sides of the rotating rod 1, and the fixed ends of the two elastic telescopic rods are respectively fixed on both sides of the inner wall of the device body. An L-shaped rod is fixed on the front side of the telescopic end of the two elastic telescopic rods. The L-shaped rod position The two wheels are fixed to the two sides of the two-way rifle rod, and the two wheels are located on the same horizontal plane, and the outer walls of the two wheels are rough surfaces. The two sides of the outer walls of the two-way rifle rod are threadedly connected with threaded blocks, and the bottom of the threaded blocks are slidably connected to the inner groove of the slide plate, and the side walls of the slide plate are in contact with the side walls of the partition plate. Each time the door panel is opened, the door panel no longer pushes the L-shaped rod, and under the elastic force of the elastic telescopic rod, the elastic telescopic rod drives the L-shaped rod to reset, and the L-shaped rod drives the fixed wheel two away from the fixed wheel one through the two-way rifle rod, and the fixed wheel two is no longer in contact with the fixed wheel one. At this time, under the elastic force of the springs corresponding to the two slides, the two slides move towards the center of the device body until the two slides contact each other. At this time, the two slides drive the thermal insulation curtain to block the area above the heating component.

[0010] The present invention provides a device for detecting thermal stability of plastic products, which has the following beneficial effects:

[0011] (1) The present invention provides a real-time monitoring device, so that the T-shaped plug rod and the hollow cylinder cooperate with the detection end of the pressure gauge to monitor the pressure change inside the hollow cylinder in real time. The staff can judge the softening condition of the plastic product by observing the value of the pressure gauge, which is helpful for the staff to timely evaluate the durability and reliability of the plastic material under high temperature; at the same time, the T-shaped plug rod, the fixing frame, the U-shaped sliding rod, the resistance rod, and the triangular plate cooperate to drive the movement of the scraper to scrape off the colloid residue of the plastic product adhered to the bottom surface of the T-shaped plug rod, thereby avoiding the problem that the colloid residue of the plastic product adheres to the bottom surface of the T-shaped plug rod and affects the contact between the T-shaped plug rod and the next plastic product.

[0012] (2) The present invention sets a uniform device so that the motor and the rotating rod cooperate to drive the fan blades to rotate. The fan blades will fan the hot air inside the device body, thereby ensuring that the hot air inside the device body is quickly and evenly distributed, thereby avoiding the problem that uneven temperature distribution will cause the plastic product to be heated inconsistently during the test, thereby failing to accurately reflect the actual thermal stability of the plastic product.

[0013] (3) The present invention cooperates with the door panel, L-shaped rod, elastic telescopic rod, two-way rifle rod, fixed wheel two and fixed wheel one, so that the two slides drive the thermal insulation curtain to shield the area above the heating component. The thermal insulation curtain can effectively reduce heat loss, thereby keeping the heat generated by the heating component concentrated in the internal space of the device body. This means that when the next batch of plastic products needs to be reheated, the internal space of the device body can be restored to the required temperature more quickly, saving the time required for heating, while reducing energy consumption and improving heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the present invention as a whole;

[0015] Figure 2 It is a partial cross-sectional schematic diagram of the present invention;

[0016] Figure 3 Schematic diagram of the real-time monitoring device of the present invention Figure 1 ;

[0017] Figure 4 Schematic diagram of the real-time monitoring device of the present invention Figure 2 ;

[0018] Figure 5 A schematic diagram of a uniform device of the present invention;

[0019] Figure 6 For the present invention Figure 5 A schematic diagram of the structure at A;

[0020] Figure 7 It is a schematic diagram of the local structure of the uniform device of the present invention.

[0021] In the figure: 1. device body; 2. door panel; 3. heating component; 4. placing table; 5. real-time monitoring device; 51. U-shaped frame; 52. pressure gauge; 53. hollow cylinder; 54. T-shaped plug rod; 55. lifting plate; 56. fixed frame; 57. scraper; 58. U-shaped slide bar; 59. resistance rod; 510. triangle plate; 6. uniform device; 61. motor; 62. rotating rod one; 63. fan blade; 64. partition; 65. fixed wheel one; 66. fixed wheel two; 67. elastic telescopic rod; 68. L-shaped rod; 69. thermal insulation curtain; 610. rotating rod two; 611. slide plate; 612. limit rod; 613. threaded block; 614. two-way rifle rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1 - Figure 7 One embodiment of the present invention is: a plastic product thermal stability detection device, including a device body 1, a door panel 2 is hinged on the front side of the device body 1, a heating component 3 is arranged at the bottom of the inner wall of the device body 1, a placement table 4 is fixed inside the device body 1, and a real-time monitoring device 5 is arranged above the placement table 4. The real-time monitoring device 5 includes a U-shaped frame 51, the U-shaped frame 51 is fixed to the top of the device body 1, and the opening of the U-shaped frame 51 is set downward, the top of the U-shaped frame 51 is embedded with a pressure gauge 52, and the bottom of the U-shaped frame 51 is fixed with a hollow cylinder 53, the bottom of the hollow cylinder 53 passes through the top of the device body 1, and the inside of the hollow cylinder 53 slides A T-shaped plug rod 54 is installed, and a spring is provided between the T-shaped plug rod 54 and the inner wall of the hollow cylinder 53, and the T-shaped plug rod 54 passes through the bottom of the inner wall of the hollow cylinder 53, the plug disc part of the T-shaped plug rod 54 is located inside the hollow cylinder 53, the rod-shaped part of the T-shaped plug rod 54 is set downward, and a lifting plate 55 is fixed to the lower outer wall of the T-shaped plug rod 54. Through the arrangement of the above structure, the detection end of the pressure gauge 52 can monitor the pressure changes inside the hollow cylinder 53 in real time, and the staff can judge the heating and softening of the plastic product by observing the value of the pressure gauge 52, which is conducive to the staff to timely evaluate the durability and reliability of the plastic material at high temperature.

[0024] The real-time monitoring device 5 also includes a fixing frame 56 and a triangular plate 510. The fixing frame 56 is fixed to the lower outer wall of the T-shaped plug rod 54. A U-shaped sliding rod 58 (such as Figure 4As shown in the figure, the opening of the U-shaped slide bar 58 is set downward, and a spring is provided between the U-shaped slide bar 58 and the fixed frame 56, a scraper 57 is fixed to the bottom of the U-shaped slide bar 58, the top surface of the scraper 57 is on the same horizontal line with the bottom surface of the T-shaped plug rod 54, a resistance rod 59 is fixed to one side of the scraper 57, a triangular plate 510 is fixed to the top of the inner wall of the device body 1, and the bottom of the triangular plate 510 is set to be gradually inclined from the center of the device body 1 toward the side wall of the device body 1, the triangular plate 510 is located directly above the resistance rod 59, the top of the resistance rod 59 is set in a circular shape, and the inclined surface of the triangular plate 510 is located on the circular movement trajectory of the resistance rod 59. Through the setting of the above structure, the movement of the scraper 57 will scrape off the glue residue of the plastic product adhered to the bottom surface of the T-shaped plug rod 54, thereby avoiding the glue residue of the plastic product adhering to the bottom surface of the T-shaped plug rod 54 and affecting the contact between the T-shaped plug rod 54 and the next plastic product.

[0025] When in use, the door panel 2 is opened, the plastic product to be tested is placed on the placement table 4, and the T-shaped plug rod 54 is lifted by the lifting plate 55 so that the T-shaped plug rod 54 contacts the top surface of the plastic product. Then the door panel 2 is closed, and the heating component 3 is started. The heating component 3 will heat the internal space of the device body 1. When the T-shaped plug rod 54 contacts the top surface of the plastic product, under the action of the spring force corresponding to the T-shaped plug rod 54, the T-shaped plug rod 54 will apply pressure to the top surface of the plastic product. When the plastic product is softened by heat, since the T-shaped plug rod 54 applies force downward, the T-shaped plug rod 54 will tend to move downward. The T-shaped plug rod 54 moves downward along the inside of the hollow cylinder 53, and the internal pressure of the hollow cylinder 53 changes. The detection end of the pressure gauge 52 will monitor the pressure change inside the hollow cylinder 53 in real time, and the staff can observe the pressure change by observing the pressure gauge 52. The value of the pressure gauge 52 is observed to judge the heating and softening condition of the plastic product, so as to facilitate the staff to timely evaluate the durability and reliability of the plastic material under high temperature; at the same time, each time the T-shaped plug rod 54 is lifted upward, the T-shaped plug rod 54 drives the fixing frame 56 to move upward, and the fixing frame 56 drives the scraper 57 and the resistance rod 59 to move upward through the U-shaped slide bar 58. When the resistance rod 59 moves to the inclined position of the triangular plate 510, the inclined surface of the triangular plate 510 pushes the resistance rod 59 to drive the scraper 57 to move in the direction of the T-shaped plug rod 54, and the spring corresponding to the U-shaped slide bar 58 is compressed. The movement of the scraper 57 will scrape off the colloid residue of the plastic product adhered to the bottom surface of the T-shaped plug rod 54, thereby avoiding the problem that the colloid residue of the plastic product adheres to the bottom surface of the T-shaped plug rod 54 and affects the contact between the T-shaped plug rod 54 and the next plastic product.

[0026] It should also be noted that due to the spacing between the resistance rod 59 and the inclined surface of the triangle plate 510, when the plastic product to be inspected is placed on the placement table 4 and the lifting plate 55 is lifted to drive the fixed frame 56, the U-shaped sliding bar 58, and the resistance rod 59 to move, the triangle plate 510 will not trigger the displacement of the resistance rod 59. The displacement of the resistance rod 59 will only be triggered when the resistance rod 59 moves to the inclined surface position of the triangle plate 510. Therefore, the plastic product will not interfere with the operation of the scraper 57 after being placed on the placement table 4.

[0027] See also Figure 1 - Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a uniform device 6 is provided under the placement table 4.

[0028] The uniform device 6 includes a rotating rod 62, which is rotatably installed inside the device body 1 and driven by a motor 61. The motor 61 is fixed on the outer wall of the device body 1, and a plurality of fan blades 63 are fixed to the outside of the rotating rod 62. Through the arrangement of the above structure, the fan blades 63 can fan the hot air inside the device body 1, thereby ensuring that the hot air inside the device body 1 is quickly and evenly distributed, thereby avoiding the problem that uneven temperature distribution will cause the plastic product to be heated inconsistently during the test, thereby failing to accurately reflect the true thermal stability of the plastic product.

[0029] The uniform device 6 also includes two partitions 64, two fixed wheels 1 65, two elastic telescopic rods 67, and two rotating rods 2 610. The two partitions 64 are respectively fixed on both sides of the inner wall of the device body 1. The front and rear sides of the two partitions 64 are fixed with a limit rod 612. The two rotating rods 2 610 are respectively rotatably mounted on both sides of the inner wall of the device body 1, and a spiral spring is provided between the rotating rod 2 610 and the inner wall of the device body 1. The rotating rod 2 610 is located below the partition 64. The outside of the two rotating rods 2 610 is fixed with a temperature insulation spring. The two heat-insulating curtains 69 are fixed with a slide plate 611 at one end away from the rotating rod 610, and the slide plate 611 is slidably installed between the two limit rods 612. A spring is arranged between the tops of the two slide plates 611, and a slide groove is arranged on the top of the slide plate 611. The two fixed wheels 65 are respectively fixed on both sides of the rotating rod 62. The fixed ends of the two elastic telescopic rods 67 are respectively fixed on both sides of the inner wall of the device body 1. The front sides of the telescopic ends of the two elastic telescopic rods 67 are fixed with L-shaped rods 68. The opening of the L-shaped rod 68 is for the elastic telescopic rod 67 to be opened. The direction of the retracted rod 67 is set, and the L-shaped rod 68 is located on the movement track of the door panel 2. A two-way rifle rod 614 is rotatably installed between the rear sides of the two L-shaped rods 68. Fixed wheels 66 are fixed on both sides of the two-way rifle rod 614. Fixed wheels 1 65 and 2 66 are located on the same horizontal plane, and the outer walls of fixed wheels 1 65 and 2 66 are both rough surfaces. Threaded blocks 613 are threadedly connected on both sides of the outer wall of the two-way rifle rod 614. The bottom of the threaded block 613 is slidably connected to the inside of the slide groove of the slide plate 611. The side wall of the slide plate 611 is in contact with the side wall of the partition 64. Through the setting of the above structure, the two slide plates 611 drive the thermal insulation curtain 69 to block the area above the heating component 3. The thermal insulation curtain 69 can effectively reduce the loss of heat, thereby keeping the heat generated by the heating component 3 concentrated in the internal space of the device body 1. This means that when the next batch of plastic products needs to be reheated, the internal space of the device body 1 can be restored to the required temperature more quickly, saving the time required for heating, while reducing energy consumption and improving heating efficiency.

[0030] When in use, after the heating component 3 is started, the motor 61 drives the rotating rod 62 to rotate, and the rotating rod 62 drives the fan blade 63 to rotate. The fan blade 63 will fan the hot air inside the device body 1, so as to ensure that the hot air inside the device body 1 is quickly and evenly distributed, thereby avoiding the problem that uneven temperature distribution will cause the plastic product to be heated inconsistently during the test, thereby failing to accurately reflect the real thermal stability of the plastic product; when the door panel 2 is closed, the door panel 2 will push the L-shaped rod 68 to move in the direction of the elastic telescopic rod 67, and the elastic The telescopic end of the telescopic rod 67 is compressed, and at the same time, the L-shaped rod 68 drives the fixed wheel 2 66 to contact the fixed wheel 1 65 through the two-way rifle rod 614. When the rotating rod 1 62 rotates, the fixed wheel 1 65 is driven to rotate. Under the friction between the fixed wheel 2 66 and the fixed wheel 1 65, the fixed wheel 1 65 drives the fixed wheel 2 66 to rotate, and the fixed wheel 2 66 drives the two-way rifle rod 614 to rotate. The two-way rifle rod 614 drives the threaded block 613 to drive the slide plate 611 to move in the direction of the partition 64, and the springs corresponding to the two slide plates 611 are stretched. At the same time, the slide plate 611 drives the thermal insulation curtain 69 to move, and under the elastic force of the spiral spring corresponding to the rotating rod 610, the rotating rod 610 reels the thermal insulation curtain 69. Every time the door panel 2 is opened, the door panel 2 no longer pushes the L-shaped rod 68. Under the elastic force of the elastic telescopic rod 67, the elastic telescopic rod 67 drives the L-shaped rod 68 to reset. The L-shaped rod 68 drives the fixed wheel 2 66 away from the fixed wheel 1 65 through the two-way rifle rod 614. The fixed wheel 2 66 is no longer in contact with the fixed wheel 1 65. At this time, under the elastic force of the springs corresponding to the two slide plates 611, the fixed wheel 2 66 is no longer in contact with the fixed wheel 1 65. The two slides 611 move toward the center of the device body 1 until the two slides 611 contact each other. At this time, the two slides 611 drive the thermal insulation curtain 69 to cover the area above the heating component 3. The thermal insulation curtain 69 can effectively reduce heat loss, thereby keeping the heat generated by the heating component 3 concentrated in the internal space of the device body 1. This means that when the next batch of plastic products needs to be reheated, the internal space of the device body 1 can be restored to the required temperature more quickly, saving the time required for heating, while reducing energy consumption and improving heating efficiency.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting thermal stability of plastic products, comprising a device body (1), a door panel (2) being hingedly connected to the front side of the device body (1), a heating component (3) being arranged at the bottom of the inner wall of the device body (1), and a placement table (4) being fixed inside the device body (1), characterized in that: A real-time monitoring device (5) is arranged above the placement table (4), and the real-time monitoring device (5) comprises a U-shaped frame (51), the U-shaped frame (51) is fixed to the top of the device body (1), a pressure gauge (52) is embedded in the top of the U-shaped frame (51), a hollow cylinder (53) is fixed to the bottom of the U-shaped frame (51), the bottom of the hollow cylinder (53) passes through the top of the device body (1), a T-shaped plug rod (54) is slidably installed inside the hollow cylinder (53), a spring is arranged between the T-shaped plug rod (54) and the inner wall of the hollow cylinder (53), and the T-shaped plug rod (54) passes through the bottom of the inner wall of the hollow cylinder (53); The real-time monitoring device (5) further comprises a fixing frame (56) and a triangular plate (510), wherein the fixing frame (56) is fixed to the lower outer wall of the T-shaped plug rod (54), a U-shaped sliding rod (58) is slidably mounted on one side of the fixing frame (56), and a spring is provided between the U-shaped sliding rod (58) and the fixing frame (56), a scraper (57) is fixed to the bottom of the U-shaped sliding rod (58), and a resisting rod (59) is fixed to one side of the scraper (57), and the triangular plate (510) is fixed to the top of the inner wall of the device body (1), and the bottom of the triangular plate (510) is arranged to be gradually inclined from the center of the device body (1) toward the side wall of the device body (1); The top surface of the scraper (57) and the bottom surface of the T-shaped plug rod (54) are on the same horizontal line; The triangular plate (510) is located directly above the abutment rod (59); the top of the abutment rod (59) is arranged in a circular shape; and the inclined surface of the triangular plate (510) is located on the circular motion trajectory of the abutment rod (59).

2. A plastic product thermal stability detection device according to claim 1, characterized in that: A lifting plate (55) is fixed to the lower outer wall of the T-shaped plug rod (54).

3. A plastic product thermal stability detection device according to claim 1, characterized in that: A circular hole is formed at the top of the hollow cylinder (53), and the detection end of the pressure gauge (52) is connected to the interior of the hollow cylinder (53) through the circular hole of the hollow cylinder (53).

4. A plastic product thermal stability detection device according to claim 1, characterized in that: A uniform device (6) is provided below the placement table (4), and the uniform device (6) comprises a rotating rod (62). The rotating rod (62) is rotatably mounted inside the device body (1), and the rotating rod (62) is driven by a motor (61). The motor (61) is fixed on the outer wall of the device body (1), and a plurality of fan blades (63) are fixed on the outside of the rotating rod (62).

5. A plastic product thermal stability detection device according to claim 4, characterized in that: The uniform device (6) further comprises two partitions (64), two fixed wheels (65), two elastic telescopic rods (67), and two rotating rods (610). The two partitions (64) are respectively fixed on both sides of the inner wall of the device body (1). A limiting rod (612) is fixed between the front and rear sides of the two partitions (64). The two rotating rods (610) are respectively rotatably mounted on both sides of the inner wall of the device body (1), and a spiral spring is provided between the rotating rods (610) and the inner wall of the device body (1). The rotating rods (610) are located below the partitions (64). A thermal insulation curtain (69) is fixed to the outside of the two rotating rods (610). A slide plate (611) is fixed to one end of the two thermal insulation curtains (69) away from the rotating rods (610), and the slide plate (611) is slidably mounted on the inner wall of the device body (1). Installed between two limit rods (612), a spring is provided between the tops of the two slide plates (611), a slide groove is provided on the top of the slide plate (611), the two fixed wheels (65) are respectively fixed on both sides of the rotating rod (62), the fixed ends of the two elastic telescopic rods (67) are respectively fixed on both sides of the inner wall of the device body (1), the front sides of the telescopic ends of the two elastic telescopic rods (67) are fixed with L-shaped rods (68), a two-way rifle rod (614) is rotatably installed between the rear sides of the two L-shaped rods (68), the two sides of the two-way rifle rod (614) are fixed with fixed wheels (66), the two sides of the outer wall of the two-way rifle rod (614) are threadedly connected with threaded blocks (613), and the bottom of the threaded block (613) is slidably connected to the inside of the slide groove of the slide plate (611).

6. A plastic product thermal stability detection device according to claim 5, characterized in that: The fixed wheel 1 (65) and the fixed wheel 2 (66) are located on the same horizontal plane, and the outer walls of the fixed wheel 1 (65) and the fixed wheel 2 (66) are both rough surfaces, and the L-shaped rod (68) is located on the movement track of the door panel (2).

7. A plastic product thermal stability detection device according to claim 5, characterized in that: The side wall of the slide plate (611) is in contact with the side wall of the partition plate (64).

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