Cold and hot impact sample device for gum

Abstract

The invention relates to the technical field of new material testing, and discloses a cold and hot impact sample device for gum, which comprises a machine body, a cooling part, a separation part and a heating part are sequentially arranged on the machine body, the cooling part comprises a cooling box and a cooling tank which are elastically, hermetically and slidably arranged, and the cooling tank is fixedly connected with the machine body. A cold discharge port is formed in the cooling box, and a pull-down piece is fixedly installed on the cooling box. According to the invention, only the isolation cylinder needs to be driven to rotate, on one hand, the moving operation of the gum can be realized, on the other hand, the opening and plugging operation of the separation part can be realized in the rotation process of the isolation cylinder, and automatic connection can be realized without providing a control system between the two sets of operation, so that the cost and the design difficulty are reduced; and the two sets of operations are simultaneously and completely fused, only the operation time for moving the gum needs to be consumed, and the opening and blocking operations of the separation part are omitted, so that the total working time required for switching the positions of the gum is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of new material testing, in particular to a hot and cold shock sample device for adhesive backing. Background Art

[0002] Thermal shock treatment is a test of the performance and reliability of new materials or new composite materials under extreme temperature changes. In the field of adhesive backing, when new adhesive backing materials are produced, they will undergo thermal shock tests to discover design and process defects, provide acceptance basis, eliminate early failures, evaluate material performance, simulate actual use environment, improve product reliability, and meet industry standards.

[0003] During the hot and cold shock test, in order to reduce manual operation and improve the level of automation, many hot and cold shock devices have appeared in the prior art, such as the invention patent with application number CN202010839745.2, publication (announcement) number CN111948082B, and name "A Hot and Cold Shock Test Device", which discloses an air supply part, a cooling part, a heating part, a conveying part, a partition, etc. The air supply part provides a low-temperature environment for the cooling part, and the heating part creates a high-temperature environment through a heating furnace. The conveying part switches the test sample between the cooling part and the heating part by driving the test sample up and down by a first motor. The partition part realizes the separation of the cooling part and the heating part by driving the plug to slide back and forth by a second motor, and provides a passage for up and down movement when the test sample switches its position. The working process is: the conveyor moves the test sample from the outside to the heating part for testing through the drive of the first motor - the partition is sealed by the second motor - after the temperature of the test sample is reached, the second motor drives the plug to open the partition - the conveyor moves the test sample to the refrigeration part for testing - the second motor drives the plug to seal the partition again, realizing hot and cold shock in sequence.

[0004] While the thermal shock test device of the aforementioned invention patent can reduce manual labor, it requires two sets of operations when switching the test specimen from the cooling section to the heating section, or vice versa: first, the test specimen needs to be driven by a conveyor, and second, the partition needs to be opened and closed by a second motor. Both the aforementioned patent and the prior art suffer from the same drawbacks in the coordination between these two sets of operations:

[0005] 1. The coordination between the two operations of driving the test specimen through the conveyor and driving the partition to open and close through the second motor requires a matching control system to control the operation of the second motor and the first motor in the conveyor respectively. Otherwise, the two operations cannot be automatically connected. However, adding a control system will directly increase the manufacturing cost and design difficulty of the equipment.

[0006] 2. Since the two operations of driving the test specimen to move and driving the partition to open and close are independent of each other and run in sequence, the two operations require their own working time when they are running. As a result, the total working time required is long each time the position of the test specimen is switched, and the efficiency is low.

[0007] To this end, how to automatically achieve the connection between the two operations of driving the test sample to move and driving the partition to open and close when switching the position of the test sample without providing a control system for control, and at the same time reduce the total time required for switching the position of the test sample to improve work efficiency is a technical problem that needs to be solved urgently. Summary of the Invention

[0008] The purpose of the present invention is to provide a hot and cold shock test specimen device for adhesive backing to solve the above-mentioned deficiencies in the prior art.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a hot and cold impact test specimen device for adhesive backing, comprising a body, wherein the body is sequentially provided with a cooling portion, a partition portion, and a heating portion, the cooling portion comprising a cooling box and a cooling tank which are elastically sealed and slidably arranged, the cooling tank being fixedly connected to the body, the cooling box being provided with a cold discharge port, and a pull-down member being fixedly mounted on the cooling box;

[0010] The heating part includes a heating box slidably connected to the body, a heat exhaust port is opened on the heating box, and an upper pull piece is fixedly installed on the heating box;

[0011] The partition portion includes an insulating cylinder rotatably connected to the body, a receiving cavity for placing the adhesive is formed in the insulating cylinder, a blocking door for blocking the receiving cavity is installed on the insulating cylinder, and a vent hole communicating with the receiving cavity is opened on the circumferential surface of the insulating cylinder;

[0012] The insulating cylinder is provided with a pushing plate for pushing the upper pull member and the lower pull member;

[0013] The insulating tube rotates clockwise to rotate the vent hole from the cold exhaust port to the heat exhaust port and is covered by the heat exhaust port, thereby driving the pushing plate to push the two upper pull members to pull the heating box upward so that the heat exhaust port and the outer peripheral surface of the insulating tube are sealed and fitted. The insulating tube rotates counterclockwise to rotate the vent hole from the heat exhaust port to the cold exhaust port and is covered by the cold exhaust port, thereby driving the pushing plate to push the two lower pull members to pull the cooling box downward so that the cold exhaust port and the outer peripheral surface of the insulating tube are sealed and fitted.

[0014] The above-mentioned hot and cold shock specimen device for adhesive backing, the lower pull-down member includes a first L-plate fixedly connected to the cooling box, the first pressure column is installed on the first L-plate, the upper pull-up member includes a second L-plate fixedly connected to the heating box, the second pressure column is installed on the second L-plate, the pushing plate includes a first pressure plate and a second pressure plate connected as one piece, the insulating tube drives the first pressure plate to push the circumferential surface of the first pressure column downward during the counterclockwise rotation, and drives the second pressure plate to push the circumferential surface of the second pressure column upward during the clockwise rotation of the insulating tube.

[0015] The above-mentioned hot and cold shock test specimen device for adhesive backing, the blocking door is rotatably installed on the isolation cylinder through a rotating rod, and a rubber block is fixedly installed on the blocking door to be tightly fitted with the inner wall of the opening of the accommodating cavity, and an arc-shaped push plate is formed on the blocking door. During the clockwise rotation of the isolation cylinder, the arc-shaped push plate squeezes the pull-down piece to drive the blocking door to apply pressure to the inside of the accommodating cavity so that the arc-shaped push plate seals the opening of the accommodating cavity and the blocking door is locked by the pull-down piece.

[0016] The above-mentioned hot and cold shock specimen device for adhesive backing has a first inclined surface, a plane, and a second inclined surface connected in sequence formed on the side of the arc-shaped push plate away from the accommodating cavity. When the blocking door blocks the opening of the accommodating cavity, the first inclined surface and the second inclined surface gradually move away from the accommodating cavity in the direction of the plane until they are connected at the same height as the plane.

[0017] The above-mentioned hot and cold shock specimen device for adhesive backing has two lower pull-down members which are located on the front and rear sides of the cooling box in a one-to-one correspondence, two upper pull-down members which are located on the front and rear sides of the heating box in a one-to-one correspondence, and two push-down plates which are located on the front and rear sides of the insulating tube in a one-to-one correspondence. The push-down plate located on the front side of the insulating tube is fixedly mounted on the blocking door.

[0018] The above-mentioned hot and cold shock test specimen device for adhesive backing is provided with a first pad fixedly mounted on the first L-plate on the front side of the cooling box, and a ball is rollingly embedded in the first pad. During the clockwise rotation of the insulating cylinder, the first inclined surface first abuts against the ball so that the pull-down member gradually increases the extrusion force on the blocking door until the extrusion force on the blocking door reaches a maximum when the plane abuts against the ball.

[0019] In the above-mentioned hot and cold shock test specimen device for adhesive backing, the first pressure plate and the second pressure plate are both made of rubber.

[0020] The above-mentioned hot and cold shock test specimen device for adhesive backing is based on the opening of the vent hole and the accommodating cavity so that an arc plate is formed on the insulating cylinder. The inner wall of the arc plate is elastically rotated to provide two fixing parts for fixing the two ends of the adhesive backing in a one-to-one manner. Two push rods corresponding to the two fixing parts are fixedly installed on the blocking door. In the process of rotating the blocking door to block the opening of the accommodating cavity, the two fixing parts are driven to clamp the two ends of the adhesive backing in a one-to-one manner. In the process of opening the blocking door, the two fixing parts are driven to release the clamping of the adhesive backing.

[0021] The above-mentioned hot and cold shock test specimen device for adhesive backing, the fixing part includes a fixedly connected pull plate, a pull rod, and a swing plate, the swing plate is elastically rotatably connected to the inner wall of the arc plate, one end of the pull rod is fixedly connected to the swing plate, and the other end is fixedly connected to the pull plate, and when the blocking door rotates to block the opening of the accommodating cavity, the push rod pushes the pull plate to pull the swing plate to rotate elastically to squeeze and clamp the adhesive backing between the swing plate and the arc plate.

[0022] The above-mentioned hot and cold shock specimen device for adhesive backing, the swing plate includes an integrally arranged abutment plate and a clamping plate, an axle body is inserted between the abutment plate and the clamping plate, the inner wall of the arc plate is fixedly installed with two groups of support blocks that are rotatably connected to the axles on the two fixing parts in a one-to-one correspondence, and a compression spring is fixedly connected between the clamping plate and the inner wall of the arc plate.

[0023] Beneficial effects:

[0024] 1. In the above technical solution, the present invention provides a hot and cold shock specimen device for adhesive backing, which has a rotating setting of an insulating cylinder, an elastic sliding setting of a cooling box and a heating box, and a push plate fixedly installed on the insulating cylinder, a pull-down member is set on the cooling box, and an upper pull-up member is set on the heating box. It only needs to drive the insulating cylinder to rotate. During the rotation of the insulating cylinder, the movement operation of the adhesive backing and the opening and sealing operation of the partition part can be realized on the one hand, and the opening and sealing operation of the partition part can be realized on the other hand. The two sets of operations can be automatically connected without providing a control system, thereby reducing costs and design difficulty; and the two sets of operations are fully integrated at the same time, only consuming the operation time of moving the adhesive backing, and eliminating the opening and sealing operations of the partition part, thereby reducing the total working time required for switching the adhesive backing position to improve work efficiency.

[0025] 2. The partition in the present application serves not only to separate the cooling part from the heating part, but also to move the adhesive backing, thereby eliminating the structural design of the conveying parts used to move the test samples in the prior art, simplifying the structure of the sample device and achieving unexpected technical effects.

[0026] 3. In the present application, by providing an arc-shaped push plate on the blocking door, firstly, the pull-down member and the pull-up member can produce the effect of squeezing the blocking door, so that the blocking door has an extrusion force toward the inner side of the accommodating chamber, thereby further increasing the extrusion force between the rubber block and the accommodating chamber, ensuring that the opening of the accommodating chamber is sealed. Even if the rubber block does not completely seal the opening of the accommodating chamber when the blocking door is closed, the pull-up member and the pull-down member can be used to achieve complete sealing of the opening of the accommodating chamber by the rubber block during the rotation of the isolation cylinder. Furthermore, the pull-up member and the pull-down member can produce the effect of locking the blocking door, so as to maintain the sealing state of the rubber block on the opening of the accommodating chamber. Even if the internal pressure of the accommodating chamber increases, the opening of the accommodating chamber will not be opened. The setting of the locking mechanism for locking the blocking door is eliminated, and the operation of locking and unlocking the blocking door separately is eliminated, making the structure and operation process of the device more simplified. It can be seen that the cooperation of the arc-shaped push plate with the pull-up member and the pull-down member enables the pull-up member and the pull-down member to achieve unexpected technical effects.

[0027] 4. Through the creative design between the two fixing parts and the two push rods on the blocking door, the two fixing parts can automatically fix the adhesive backing when the blocking door is closed, and the two fixing parts can automatically release the adhesive backing when the blocking door is opened. There is no need to operate the fixing parts separately, which saves the operation of fixing and releasing the adhesive backing with the fixing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0029] Figure 1 A schematic structural diagram of a sample device in an initial state from a first viewing angle according to an embodiment of the present invention;

[0030] Figure 2 A schematic structural diagram of a cooling unit provided in an embodiment of the present invention;

[0031] Figure 3 The embodiment of the present invention provides Figure 2 A schematic diagram of the enlarged structure of part A in FIG;

[0032] Figure 4 A schematic structural diagram of a blocking door provided by an embodiment of the present invention from a first perspective;

[0033] Figure 5 A schematic structural diagram of a blocking door provided by an embodiment of the present invention from a second perspective;

[0034] Figure 6A right side view of the sample device provided by an embodiment of the present invention with the base and bracket removed;

[0035] Figure 7 A schematic structural diagram of a sample device in a second viewing angle in an initial state provided by an embodiment of the present invention;

[0036] Figure 8 A schematic diagram of the structure of an embodiment of the present invention after the base and bracket are removed in the initial state;

[0037] Figure 9 A schematic diagram of the structure of an embodiment of the present invention in which the cold outlet is blocked by an isolation tube after the base and bracket are removed;

[0038] Figure 10 The embodiment of the present invention provides Figure 9 Schematic diagram of the enlarged structure of part B;

[0039] Figure 11 A schematic diagram of the structure of an embodiment of the present invention in which the heat exhaust port is blocked by an isolation tube after the base and the bracket are removed;

[0040] Figure 12 The embodiment of the present invention provides Figure 11 Schematic diagram of the enlarged structure of part C;

[0041] Figure 13 A schematic structural diagram of the sample device provided by an embodiment of the present invention in the initial state after removing the blocking door and the rubber block;

[0042] Figure 14 The embodiment of the present invention provides Figure 13 Schematic diagram of the enlarged structure of part D in FIG;

[0043] Figure 15 A schematic diagram of the structure between the blocking door and two fixing parts provided in an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 1. Isolating cylinder; 101. Ventilation hole; 102. Arc plate; 103. Accommodating chamber; 104. Support block; 2. Heating box; 201. Second limiting rod; 3. Cooling box; 301. Sealing tube; 302. First limiting rod; 4. Rotating shaft; 5. Cooling tank; 501. Inlet pipe; 502. Outlet pipe; 503. Fixed plate; 6. First L-shaped plate; 7. Second L-shaped plate; 8. Blocking door; 801. Door body; 802. Connecting plate; 803. Push rod; 804. Handle; 805. Arc-shaped push plate; 8051. First inclined surface; 8052. Second inclined surface; 80 53. Plane; 8054. Groove; 9. Rotating rod; 10. Base; 1001. Bracket; 11. First tension spring; 12. Elastic sealing pad; 13. First pressure plate; 1301. First pressure surface; 14. Second pressure plate; 1401. Second pressure surface; 15. Rubber block; 16. Pull plate; 17. Pull rod; 18. Swing plate; 1801. Abutment plate; 1802. Clamping plate; 1803. Shaft; 19. First pressure column; 20. First cushion block; 21. Ball; 22. Second pressure column; 23. Second cushion block; 24. Compression spring; 25. Driving mechanism. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] like Figure 1-15 As shown, an embodiment of the present invention provides a hot and cold shock test device for adhesive backing, comprising a body, on which a cooling portion, a partition portion, and a heating portion are sequentially provided. The cooling portion comprises a cooling box 3 and a cooling tank 5 that are elastically sealed and slidably arranged. The cooling tank 5 is fixedly connected to the body. A cooling outlet is provided on the cooling box 3, and a pull-down member is fixedly installed on the cooling box 3.

[0048] The heating part includes a heating box 2 which is slidably connected to the body, a heat exhaust port is provided on the heating box 2, and an upper pull-up member is fixedly installed on the heating box 2;

[0049] The partition includes an insulating cylinder 1 rotatably connected to the body, and a receiving cavity 103 for placing the adhesive is formed in the insulating cylinder 1. A blocking door 8 for blocking the receiving cavity 103 is installed on the insulating cylinder 1. A vent hole 101 communicating with the receiving cavity 103 is opened on the circumferential surface of the insulating cylinder 1.

[0050] The insulating cylinder 1 is provided with a pushing plate for pushing the upper pull member and the lower pull member;

[0051] The insulating tube 1 rotates clockwise to rotate the vent 101 from the cold exhaust port to the heat exhaust port and is covered by the heat exhaust port, thereby driving the pushing plate to push the two upper pull members to pull the heating box 2 upward so that the heat exhaust port and the outer peripheral surface of the insulating tube 1 are sealed and fitted. The insulating tube 1 rotates counterclockwise to rotate the vent 101 from the heat exhaust port to the cold exhaust port and is covered by the cold exhaust port, thereby driving the pushing plate to push the two lower pull members to pull the cooling box 3 downward so that the cold exhaust port and the outer peripheral surface of the insulating tube 1 are sealed and fitted.

[0052] The hot and cold shock test specimen device for adhesive backing provided in this embodiment is used to perform hot and cold shock tests on newly designed adhesive backing materials. The words related to directions and positions involved in this embodiment are relative to the accompanying drawings. Specifically, the body includes a base 10, a bracket 1001 is fixedly mounted on the base 10, the cooling tank 5 is fixedly mounted on the bracket 1001, and a sealing tube 301 with two open ends is integrally provided on the cooling box 3. The inner cavity of the sealing tube 301 is connected to the inner cavity of the cooling box 3. A sealing ring (not shown in the figure) is sleeved on the sealing tube 301 so that the sealing tube 301 can be sealed and slidably inserted into the inner cavity of the cooling tank 5 from the bottom of the cooling tank 5 in the vertical direction, so that the cooling box 3 and the cooling tank 5 can slide relative to each other without causing cold air to leak out. The top of the first limiting rod 302 is in contact with the top of the first sliding hole, so that the first limiting rod 302 can slide in the corresponding first sliding hole to enable the cooling box 3 to slide vertically without rotating. The cold discharge port is opened at the bottom of the cooling box 3, and the cold discharge port is arc-shaped. Due to the existence of the inner cavity of the cooling box 3, the cold discharge port has four sides. An elastic sealing gasket 12 is sealed and fixedly installed on the cold discharge port, and the elastic sealing gasket 12 can be fixedly connected to the cold discharge port by bonding. The shape of the elastic sealing gasket 12 is adapted to the shape of the cold discharge port, so that the elastic sealing gasket 12 is fixed and sealed to the four sides of the cold discharge port. The four sides of the elastic sealing gasket 12 facing the insulating tube 1 are adapted to the shape of the outer peripheral surface of the insulating tube 1, so that when the cooling box 3 is subjected to a downward force to drive the elastic sealing gasket 12 to squeeze the insulating tube 1 downward, the elastic sealing gasket 12 on the cooling box 3 is sealed and fit with the outer peripheral surface of the insulating tube 1, so that the cold discharge port at the bottom of the cooling box 3 is blocked by the insulating tube 1. Similarly, the heat exhaust port on the heating box 2 is located at the top of the heating box 2, and the insulating tube 1 is located between the heating box 2 and the cooling box 3. The shape of the heat exhaust port is the same as that of the cold exhaust port, and an elastic sealing gasket 12 is also sealed and fixedly installed on the heat exhaust port. When the heating box 2 is subjected to an upward force that drives the elastic sealing gasket 12 to squeeze the insulating tube 1 upward, the elastic sealing gasket 12 on the heating box 2 is sealed and fit with the outer peripheral surface of the insulating tube 1, so that the cold exhaust port on the top of the heating box 2 is blocked by the insulating tube 1.A plurality of second limiting rods 201 are fixedly installed at the bottom of the heating box 2, and a plurality of second sliding holes (not shown in the figure) are provided on the top of the base 10, which are slidably connected with the plurality of second limiting rods 201 in a one-to-one correspondence. Based on the one-to-one sliding connection between the plurality of second sliding holes and the plurality of second limiting rods 201, the heating box 2 can slide in the vertical direction without rotating, wherein a second tension spring (not shown in the figure) is fixedly installed between the second limiting rod 201 and the second sliding hole. The second tension spring is always in a stretched state. Based on the elastic force of the second tension spring, the end face of the second limiting rod 201 is in contact with the inner wall of the second sliding hole in the initial state to achieve the limitation of the heating box 2. In this embodiment, when the cold outlet at the bottom of the cooling box 3 is blocked by the insulating tube 1, the cooling part is isolated from the outside and the cooling part is isolated from the heating part. When the heating outlet at the top of the heating box 2 is blocked by the insulating tube 1, the heating part is isolated from the outside and the heating part is isolated from the cooling part.

[0053] A rotating shaft 4 is fixedly mounted on the axis of the insulating tube 1. The rotating shaft 4 is rotatably mounted on the bracket 1001. By driving the rotating shaft 4, the insulating tube 1 is driven to rotate. A receiving cavity 103 is formed inside the insulating tube 1. The adhesive is placed in the receiving cavity 103. The blocking door 8 is used to block the opening of the receiving cavity 103. A vent 101 is provided on the circumferential surface of the insulating tube 1 and communicates with the receiving cavity 103, allowing cold air from the cooling section to enter the receiving cavity 103 through the vent 101, and hot air from the heating section to enter the receiving cavity 103 through the vent 101. The vent 101 can be in various shapes, such as rectangular, circular, or elliptical, and its arrangement is not limited, as long as it ensures the circulation of cold and hot air and prevents the adhesive from slipping out of the receiving cavity 103 through the vent 101. An upper pull-up piece is fixedly installed on the heating box 2, and a lower pull-up piece is fixedly installed on the cooling box 3. A pushing plate is provided on the insulating tube 1, and the pushing plate cooperates with the upper pull-up piece and the lower pull-up piece. When the insulating tube 1 rotates clockwise, on the one hand, it drives the back glue to move, and on the other hand, it drives the pushing plate to push the upper pull-up piece upward. The upper pull-up piece drives the heating box 2 to slide elastically upward so that the elastic sealing gasket 12 on the heating box 2 seals and fits the outer circumference of the insulating tube 1. At this time, the air vent 101 is covered by the heat exhaust port, so that the air vent 101 and the heat exhaust port are both blocked, thereby achieving the sealing of the partition; when the insulating tube 1 rotates counterclockwise, on the one hand, it drives the back glue to move again, and on the other hand, it drives the pushing plate to push the lower pull-up piece downward, and the lower pull-up piece drives the cooling box 3 to slide elastically downward so that the elastic sealing gasket 12 on the cooling box 3 seals and fits the outer circumference of the insulating tube 1. At this time, the air vent 101 is covered by the cold exhaust port, so that the air vent 101 and the cold exhaust port are both blocked, thereby achieving the sealing of the partition again.

[0054] The rotational force of the insulating cylinder 1 can be achieved manually or by a drive mechanism 25. In this embodiment, the insulating cylinder 1 is preferably driven by the drive mechanism 25. The drive mechanism 25 is fixedly mounted on the bracket 1001. The power output shaft of the drive mechanism 25 is coaxially keyed or coaxially fixedly connected to the rotating shaft 4. The clockwise and counterclockwise rotation of the insulating cylinder 1 is achieved by activating the drive mechanism 25 in forward and reverse rotation. The drive mechanism 25 can be a self-locking reduction motor, a self-locking servo motor, a self-locking stepper motor, etc. The self-locking capability of the drive mechanism 25 prevents the insulating cylinder 1 from rotating when not being driven.

[0055] This embodiment also includes an air supply component (not shown in the figure) for providing cold air. The cooling tank 5 is provided with an air inlet pipe 501 and an air outlet pipe 502 connected to the inner cavity. A loop is formed between the air supply component and the air inlet pipe 501, the inner cavity of the cooling tank 5, and the air outlet pipe 502. The structure of the air supply component is the existing technology, and the structural design in the existing patent can be referred to. It is not repeated in this embodiment. The air supply component transports cold air to the air inlet pipe 501 through the pump body and enters the inner cavity of the cooling tank 5 and the inner cavity of the cooling box 3. The cold air is an inert gas or other gas in the existing technology. After that, the cold air enters the accommodating cavity 103 through the cold discharge port and the air vent 101 to impact the back glue for cold impact. Finally, the cold air is discharged through the air outlet pipe 502 for re-cooling and then transported to the inner cavity of the cooling tank 5 again. The heat generated in the inner cavity of the heating box 2 is preferably achieved by electric heating. The heat generated by electric heating enters the accommodating cavity 103 through the heat exhaust port and the vent 101 to heat the back glue and perform thermal shock, which will not be repeated.

[0056] The working principle of the above structure is as follows: first, the vent hole 101 is stopped between the heating box 2 and the cooling box 3. At this time, the push plate is not in contact with the upper pull member and the lower pull member. The heating box 2 is in the initial state under the elastic force of the first tension spring 11, and the cooling box 3 is in the initial state under the elastic force of the second tension spring. At this time, a gap is generated between the elastic sealing gasket 12 on the heating box 2 and the outer circumferential surface of the insulating tube 1, and between the elastic sealing gasket 12 on the cooling box 3 and the outer circumferential surface of the insulating tube 1. The value of the gap is less than 0.1mm, so that the insulating tube 1 can rotate smoothly without being affected. The friction resistance brought by the elastic sealing gasket 12 and the value of the gap are as small as possible so that the heat in the inner cavity of the heating box 2 and the cold air in the inner cavity of the cooling box 3 do not leak out or leak out as little as possible. The opening and closing of the partition is based on whether the elastic sealing gasket 12 is sealed with the outer peripheral surface of the insulating tube 1. As long as the elastic sealing gasket 12 on the cold exhaust port is sealed with the outer peripheral surface of the insulating tube 1 to prevent the cold air from leaking out or the elastic sealing gasket 12 on the heat exhaust port is sealed with the outer peripheral surface of the insulating tube 1 to prevent the heat from leaking out, the partition is blocked. In the initial state, the partition is open.Then open the blocking door 8 and place the adhesive backing in the accommodating chamber 103. After that, close the blocking door 8 to block the opening of the accommodating chamber 103, start the driving mechanism 25 to provide a clockwise rotation force for the insulating cylinder 1 to rotate the insulating cylinder 1 clockwise. When the insulating cylinder 1 rotates clockwise, on the one hand, it drives the adhesive backing and the vent 101 to move toward the heat exhaust port, and on the other hand, it drives the pushing plate to rotate toward the upper pull-up piece. When the vent 101 moves to the heat exhaust port and is covered by the heat exhaust port, the pushing plate contacts the upper pull-up piece and pushes the upper pull-up piece upward under the action of the rotational force. After the upward force is applied to the component, the heating box 2 is driven to slide upward elastically so that the elastic sealing gasket 12 on the heat exhaust port is pressed and sealed against the outer circumference of the insulating tube 1, and the driving mechanism 25 stops driving the insulating tube 1. At this time, the vent 101 and the heat exhaust port are both blocked, and the partition is blocked. The accommodating cavity 103 is connected to the inner cavity of the heating box 2 through the vent 101. The heat in the inner cavity of the heating box 2 enters the accommodating cavity 103 through the vent 101 to heat the adhesive. When the adhesive temperature is measured by the temperature measuring device installed on the heating box 2, the adhesive temperature is increased. After the measurement of the instrument (not shown in the figure) reaches a specific value, the driving mechanism 25 is started to provide a counterclockwise rotation force for the insulating cylinder 1 so that the insulating cylinder 1 drives the adhesive and the vent 101 from the heating part to the cooling part on the one hand, and drives the push plate to separate from the upper pull piece and rotate toward the lower pull piece on the other hand. At this time, the heating box 2 slides downward and resets under the elastic force of the second tension spring, so that the partition is automatically opened, so that the insulating cylinder 1 will not be affected by the friction of the elastic sealing gasket 12 when rotating. When the vent 101 moves to the cooling port and is covered by the cooling port, The push plate contacts the pull-down member and, under the action of the rotational force, pushes it downward. The downward force applied to the pull-down member causes the cooling box 3 to slide elastically downward, pressing the elastic sealing gasket 12 on the cooling port against the outer circumference of the insulating tube 1. The drive mechanism 25 is then stopped. At this point, both the vent 101 and the cooling port are blocked, and the partition is sealed again. The cold air in the cooling box 3 enters the accommodating chamber 103 through the vent 101, impacting the adhesive. When the adhesive's temperature reaches the set value as measured by the temperature measuring instrument, the cold shock test is complete. If repeated testing is required, the drive mechanism 25 can be restarted to provide a clockwise rotational force to the insulating tube 1, switching the insulating tube 1 from the cooling section to the heating section. Repeated switching allows for repeated testing of the adhesive. After the test, the driving mechanism 25 drives the insulating cylinder 1 to rotate to the initial state, so that the accommodating cavity 103 is connected to the outside world through the vent 101. After the temperature of the back glue is restored to a temperature close to the outside temperature, the blocking door 8 is opened and the back glue is taken out. Compared with the prior art, in this application, there is no need to take out the back glue in the cooling part or the heating part, which makes the method of taking out the back glue safer and will not harm the operator.

[0057] It can be seen that in this embodiment, through the rotation setting of the insulating cylinder 1, the elastic sliding setting of the cooling box 3 and the heating box 2, and the fixed installation of the push plate on the insulating cylinder 1, the setting of the pull-down member on the cooling box 3, and the setting of the pull-up member on the heating box 2, it is only necessary to drive the insulating cylinder 1 to rotate. During the rotation process of the insulating cylinder 1, the movement operation of the back glue and the opening and sealing operation of the partition can be realized on the one hand, and the two sets of operations can be automatically connected without providing a control system, thereby reducing costs and design difficulty; and the two sets of operations are fully integrated at the same time, only consuming the operation time of moving the insulating cylinder 1, and eliminating the opening and sealing operations of the partition, thereby reducing the total working time required for switching the position of the back glue to improve work efficiency.

[0058] Furthermore, the partition in the present application not only serves to separate the cooling part from the heating part, but also serves to move the adhesive backing, eliminating the structural design of the conveying parts used to move the test samples in the prior art, and achieving unexpected technical effects.

[0059] In this embodiment, there are two pull-down members, which are located on the front and rear sides of the cooling box 3 in a one-to-one correspondence; there are two pull-up members, which are located on the front and rear sides of the heating box 2 in a one-to-one correspondence; and there are two push plates, which are located on the front and rear sides of the insulating tube 1 in a one-to-one correspondence. The two push plates work in coordination with the two pull-down members in a one-to-one correspondence, and the two push plates also work in coordination with the two pull-up members in a one-to-one correspondence. The two pull-down members are both mounted on the vertical center line of the cooling box 3, and the two pull-up members are both mounted on the vertical center line of the heating box 2. The design of the two pull-down members, the two pull-up members, and the two push plates can improve the force balance when the push plates push the heating box 2 to slide upward, so that the heating box 2 can slide upward smoothly. At the same time, it can improve the force balance when the push plates push the cooling box 3 to slide downward, so that the cooling box 3 can slide downward smoothly.

[0060] In this embodiment, the lower pull-up member includes a first L-plate 6 fixedly connected to the cooling box 3, and a first pressure column 19 is installed on the first L-plate 6. The upper pull-up member includes a second L-plate 7 fixedly connected to the heating box 2, and a second pressure column 22 is installed on the second L-plate 7. The pushing plate includes a first pressure plate 13 and a second pressure plate 14 that are integrally connected. During the counterclockwise rotation of the insulating tube 1, the first pressure plate 13 is driven to push the circumferential surface of the first pressure column 19 downward. During the clockwise rotation of the insulating tube 1, the second pressure plate 14 is driven to push the circumferential surface of the second pressure column 22 upward. Specifically, the first pressure column 19 is rotatably mounted on the first L-plate 6, and the second pressure column 22 is rotatably mounted on the second L-plate 7. The first pressure plate 13 and the second pressure plate 14 have the same structure and are symmetrically arranged with the connecting center line of the two as the symmetry axis. The first pressure plate 13 and the second pressure plate 14 move away from each other and their thickness decreases successively. The side of the first pressure plate 13 facing the central axis of the isolation tube 1 is formed with a first pressure surface 1301 that abuts against the circumferential surface of the first pressure column 19, and the side of the second pressure plate 14 facing the central axis of the isolation tube 1 is formed with a first pressure surface 1301 that abuts against the circumferential surface of the first pressure column 19. There is a second pressure surface 1401 that abuts against the circumferential surface of the second pressure column 22. The first pressure surface 1301 and the second pressure surface 1401 are perpendicular to the thickness direction of the first pressure plate 13 and the second pressure plate 14. When the insulating cylinder 1 rotates counterclockwise, the first pressure surface 1301 gradually moves to the top of the first pressure column 19. As the thickness of the first pressure plate 13 increases, the first pressure surface 1301 continuously presses the first pressure column 19 downward, thereby generating a downward force on the lower pull member, so that the lower pull member pulls the cooling box 3 downward. Similarly, when the insulating cylinder 1 rotates clockwise, the second pressure surface 1401 gradually moves to the bottom of the second pressure column 22. As the thickness of the second pressure plate 14 increases, the second pressure surface 1401 continuously presses the second pressure column 22 upward, thereby generating an upward force on the upper pull member, so that the upper pull member pulls the heating box 2 upward. The first pressure column 19 and the second pressure column 22 are both installed in a rotational connection manner in order to reduce the friction between the first pressure column 19 and the first pressure plate 13 and between the second pressure column 22 and the second pressure plate 14 .

[0061] Furthermore, due to the existence of the opening of the accommodating chamber 103, when the partition is blocked, the opening of the accommodating chamber 103 must be blocked, otherwise effective hot and cold shock cannot be achieved. Therefore, in this embodiment, the blocking door 8 is rotatably installed on the isolation tube 1 through the rotating rod 9, and a rubber block 15 is fixedly installed on the blocking door 8, which is tightly fitted with the inner wall of the opening of the accommodating chamber 103. An arc-shaped push plate 805 is formed on the blocking door 8. During the clockwise rotation of the isolation tube 1, the arc-shaped push plate 805 squeezes the pull-down piece to drive the blocking door 8 to apply pressure to the inside of the accommodating chamber 103 so that the arc-shaped push plate 805 seals the opening of the accommodating chamber 103 while the blocking door 8 is locked by the pull-down piece. Specifically, two fixed blocks are fixedly installed on the front side of the insulating cylinder 1, and the rotating rod 9 is rotatably inserted between the two fixed blocks. An upper limit pad and a lower limit pad are fixedly installed on the rotating rod 9. The upper limit pad and the lower limit pad are in sliding contact with the side surfaces of the two fixed blocks that are away from each other. Based on the design of the upper limit pad and the lower limit pad, the rotating rod 9 can only rotate on its own and cannot move axially up and down, thereby ensuring that the blocking door 8 can only rotate around the axis of the rotating rod 9. The shape of the rubber block 15 is adapted to the opening shape of the accommodating cavity 103, and the rubber block 15 is tapered in the direction of the accommodating cavity 103, so that the rubber block 15 can be inserted into the accommodating cavity 103 and utilizes its own elasticity to enable the rubber block 15 to fit tightly with the inner wall of the accommodating cavity 103 when inserted into the accommodating cavity 103, thereby achieving effective sealing of the accommodating cavity 103. Furthermore, by utilizing the elasticity of the rubber block 15 , the rubber block 15 will be squeezed and deformed when sealing the opening of the accommodating cavity 103 , thereby increasing the friction between the rubber block 15 and the inner wall of the accommodating cavity 103 . Therefore, the rubber block 15 will not separate from the inner wall of the accommodating cavity 103 in a short time. The arrangement of the arc-shaped push plate 805 can firstly enable the lower pull-down member and the upper pull-down member to produce the effect of squeezing the blocking door 8, so that the blocking door 8 has an extrusion force toward the inner side of the accommodating chamber 103, thereby enabling the rubber block 15 to further increase the extrusion force between the rubber block 15 and the accommodating chamber 103, ensuring that the opening of the accommodating chamber 103 is sealed. Even if the rubber block 15 does not completely seal the opening of the accommodating chamber 103 when the blocking door 8 is closed, the upper pull-down member and the lower pull-down member can be used to achieve complete sealing of the opening of the accommodating chamber 103 by the rubber block 15 during the rotation of the isolation cylinder 1; secondly, the upper pull-down member and the lower pull-down member can be used to lock the blocking door 8 to maintain the sealing state of the rubber block 15 on the opening of the accommodating chamber 103. Even if the internal pressure of the accommodating chamber 103 increases, the opening of the accommodating chamber 103 will not be opened, thereby eliminating the locking mechanism for locking the blocking door 8 and the operation of separately locking and unlocking the blocking door 8, thereby simplifying the structure and operation process of the device.

[0062] The push plate located at the front side of the isolation cylinder 1 is fixedly mounted on the blocking door 8 .

[0063] Among them, the side of the arc-shaped push plate 805 away from the accommodating chamber 103 is formed with a first inclined surface 8051, a plane 8053, and a second inclined surface 8052 connected in sequence. When the blocking door 8 blocks the opening of the accommodating chamber 103, the first inclined surface 8051 and the second inclined surface 8052 gradually move away from the accommodating chamber 103 in the direction of the plane 8053 until they are connected at the same height as the plane 8053.

[0064] A first pad 20 is fixedly installed on the first L-plate 6 located on the front side of the cooling box 3, and a plurality of balls 21 are rollingly embedded in the first pad 20. A second pad 23 is fixedly installed on the second L-plate 7 located on the front side of the heating box 2, and a plurality of balls 21 are also rollingly embedded in the second pad 23, and the balls 21 face the blocking door 8. During the clockwise rotation of the isolation cylinder 1, the first inclined surface 8051 first abuts against the ball 21 located on the first L-plate 6, so that the pull-down member generates an extrusion force on the blocking door 8 toward the accommodating chamber 103. Based on the first inclined surface 8051 gradually moving away from the accommodating chamber 103 in the direction of the plane 8053, as the isolation cylinder 1 further rotates clockwise, the pull-down member gradually increases the extrusion force on the blocking door 8 until the plane 8053 abuts against the ball 21, and the extrusion force on the blocking door 8 reaches the maximum, so that the extrusion force between the rubber block 15 and the inner wall of the opening of the accommodating chamber 103 reaches the maximum, so that the opening of the accommodating chamber 103 is effectively sealed. After the partition is blocked, the ball 21 still remains in contact with the plane 8053, so that the blocking door 8 is locked by the pull-down member. Similarly, when the isolation tube 1 rotates counterclockwise, the second inclined surface 8052 first abuts against the ball 21 located on the second L-plate 7, so that the upper pull member generates an extrusion force on the blocking door 8 toward the accommodating chamber 103. Based on the second inclined surface 8052 gradually moving away from the accommodating chamber 103 in the direction of the plane 8053, as the isolation tube 1 further rotates counterclockwise, the upper pull member gradually increases the extrusion force on the blocking door 8 until the plane 8053 abuts against the ball 21, and the extrusion force on the blocking door 8 reaches the maximum, so that the extrusion force between the rubber block 15 and the inner wall of the opening of the accommodating chamber 103 reaches the maximum, so that the opening of the accommodating chamber 103 is effectively sealed, and when the partition is blocked, the ball 21 still remains in contact with the plane 8053, so that the blocking door 8 is locked by the upper pull member.

[0065] When closing the blocking door 8, the rubber block 15 is first inserted into the accommodating chamber 103, and then an extrusion force is generated between the outer side surface of the rubber block 15 and the inner wall of the accommodating chamber 103 to deform the rubber block 15, so that the rubber block 15 blocks the accommodating chamber 103. Under the action of the friction between the rubber block 15 and the accommodating chamber 103, the rubber block 15 will maintain the state of blocking the accommodating chamber 103 for a short time, so that when the insulating cylinder 1 rotates clockwise and counterclockwise, the rubber block 15 will not detach from the accommodating chamber 103, so that the blocking door 8 will not open by itself, thereby ensuring that the arc-shaped push plate 805 can be smoothly inserted into the upper pull member and the lower pull member.

[0066] In this embodiment, the first pressure plate 13 and the second pressure plate 14 are both made of rubber. By utilizing the elasticity of rubber, even if there is a slight difference in the position of the two pushing plates, it is possible to ensure that the two pushing plates simultaneously exert pushing force on the two upper pull-ups and the two lower pull-ups, so that the heating box 2 and the cooling box 3 can slide smoothly.

[0067] In this embodiment, to facilitate the removal of the adhesive, one side of the adhesive has an oil film layer, which abuts against the inner wall of the accommodating cavity 103, so that the adhesive does not stick to the inner wall of the accommodating cavity 103, making it easier to remove the adhesive. Since the insulating cylinder 1 is rotatable, the adhesive needs to be fixed when switching the adhesive position. Based on the opening of the vent hole 101 and the accommodating cavity 103, an arc plate 102 is formed on the insulating cylinder 1. The inner wall of the arc plate 102 is elastically rotatably provided with two fixing parts for fixing the two ends of the adhesive in a one-to-one manner. Two push rods 803 corresponding to the two fixing parts are fixedly installed on the blocking door 8. When the blocking door 8 rotates to block the opening of the accommodating cavity 103, the two fixing parts are driven to clamp the two ends of the adhesive in a one-to-one manner. When the blocking door 8 is opened, the two fixing parts are driven to release the clamping of the adhesive. Specifically, the adhesive is fixed in the accommodating cavity 103 by using two fixing members, so that the adhesive will not move in the accommodating cavity 103 during the rotation of the insulating cylinder 1, so that the adhesive can be subjected to effective thermal shock.

[0068] More importantly, in this embodiment, through the creative design between the two fixing parts and the two push rods 803 on the blocking door 8, the two fixing parts can automatically fix the back glue during the closing process of the blocking door 8, and automatically release the fixation of the two fixing parts to the back glue when the blocking door 8 is opened. There is no need to operate the fixing parts separately, which saves the operation of fixing and releasing the back glue by the fixing parts.

[0069] Specifically, the fixing parts include a fixedly connected pull plate 16, a pull rod 17, and a swing plate 18. The swing plate 18 is elastically rotatably connected to the inner wall of the arc plate 102. One end of the pull rod 17 is fixedly connected to the swing plate 18, and the other end is fixedly connected to the pull plate 16. When the blocking door 8 rotates to block the opening of the accommodating cavity 103, the end of the push rod 803 pushes the pull plate 16 to pull the swing plate 18 to rotate elastically to squeeze and clamp the back glue between the swing plate 18 and the arc plate 102.

[0070] The swing plate 18 includes an integrally arranged abutment plate 1801 and a clamping plate 1802, and a shaft 1803 is inserted between the abutment plate 1801 and the clamping plate 1802. Two groups of support blocks 104 are fixedly installed on the inner wall of the arc plate 102 and are rotatably connected to the shafts 1803 on the two fixing parts. A compression spring 24 is fixedly connected between the clamping plate 1802 and the inner wall of the arc plate 102. Specifically, the clamping plates 1802 on the two fixing parts are arranged relative to each other. In the initial state, based on the elastic force of the compression spring 24, the end of the abutting plate 1801 abuts against the inner wall of the arc plate 102, and the clamping plate 1802 does not abut against the inner wall of the arc plate 102 so that the adhesive can be inserted between the clamping plate 1802 and the arc plate 102. When placing the adhesive, the two ends of the adhesive are inserted one by one between the two clamping plates 1802 and the arc plate 102. The compression spring 24 on the upper fixing part is located above the adhesive, and the compression spring 24 on the lower fixing part is located below the adhesive, and the compression spring 24 located below the adhesive abuts against the bottom end of the adhesive to support the adhesive. The number of compression springs 24 located below the adhesive is at least two to provide stable support for the adhesive. When the blocking door 8 is closed, the ends of the two push rods 803 push the two pull plates 16 one by one in the direction away from the arc plate 102. The two pull plates 16 pull the swing plate 18 to rotate around the axis 1803 through the corresponding pull rods 17, so that the two clamping plates 1802 clamp the two ends of the back glue one by one. When the blocking door 8 is opened, as the two push rods 803 move away from the pull plate 16, the two clamping plates 1802 are driven away from the arc plate 102 under the action of the elastic force of the compression spring 24 to release the clamping of the back glue.

[0071] In this embodiment, the blocking door 8 includes a door body 801, a connecting plate 802, a push rod 803, a handle 804, and a curved push plate 805. The connecting plate 802 is fixedly installed on one side of the door body 801, and the handle 804 is fixedly installed on the door body 801. The push rod 803 and the curved push plate 805 are also fixedly connected to the door body 801. The outer side surface of the curved push plate 805 is provided with a groove 8054. The groove 8054 and the handle 804 are used when opening the blocking door 8. The handle 804 and the groove 8054 facilitate the application of force to the blocking door 8, thereby making it more convenient to open the blocking door 8.

[0072] In this embodiment, the heating box 2 is provided with a one-way exhaust valve (not shown in the figure) connected to its inner cavity, so as to release the pressure when the pressure in the inner cavity of the heating box 2 is relatively high.

[0073] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A hot and cold impact tester for adhesive backing, comprising a body, wherein a cooling portion, a partition portion, and a heating portion are sequentially provided on the body, characterized in that: The cooling part comprises a cooling box (3) and a cooling tank (5) which are elastically sealed and slidingly arranged; the cooling tank (5) is fixedly connected to the machine body; a cooling outlet is provided on the cooling box (3); and a pull-down member is fixedly installed on the cooling box (3); The heating part comprises a heating box (2) slidably connected to the machine body, a heat exhaust port is provided on the heating box (2), and an upper pull piece is fixedly installed on the heating box (2); The partition portion comprises an insulating cylinder (1) rotatably connected to the machine body, a receiving cavity (103) for placing adhesive is formed in the insulating cylinder (1), a blocking door (8) for blocking the receiving cavity (103) is installed on the insulating cylinder (1), and a vent hole (101) communicating with the receiving cavity (103) is formed on the circumferential surface of the insulating cylinder (1); The insulating cylinder (1) is provided with a pushing plate for pushing the upper pull piece and the lower pull piece; The insulating tube (1) rotates clockwise so that the vent (101) rotates from the cold outlet to the heat outlet and is covered by the heat outlet, thereby driving the push plate to push the two upper pull members to pull the heating box (2) upwards so that the heat outlet and the outer peripheral surface of the insulating tube (1) are sealed and fitted. The insulating tube (1) rotates counterclockwise so that the vent (101) rotates from the heat outlet to the cold outlet and is covered by the cold outlet, thereby driving the push plate to push the two lower pull members to pull the cooling box (3) downwards so that the cold outlet and the outer peripheral surface of the insulating tube (1) are sealed and fitted.

2. The hot and cold shock test device for adhesive backing according to claim 1, characterized in that: The lower pull-down member includes a first L-plate (6) fixedly connected to the cooling box (3), and a first pressure column (19) is installed on the first L-plate (6); the upper pull-down member includes a second L-plate (7) fixedly connected to the heating box (2), and a second pressure column (22) is installed on the second L-plate (7); the push plate includes a first pressure plate (13) and a second pressure plate (14) connected as a whole; when the insulating tube (1) rotates counterclockwise, the first pressure plate (13) is driven to push the circumferential surface of the first pressure column (19) downward; when the insulating tube (1) rotates clockwise, the second pressure plate (14) is driven to push the circumferential surface of the second pressure column (22) upward.

3. The hot and cold shock test device for adhesive backing according to claim 1, characterized in that: The blocking door (8) is rotatably mounted on the isolation cylinder (1) via a rotating rod (9); a rubber block (15) is fixedly mounted on the blocking door (8) and is pressed against the inner wall of the opening of the accommodating chamber (103); an arc-shaped push plate (805) is formed on the blocking door (8); during the clockwise rotation of the isolation cylinder (1), the arc-shaped push plate (805) presses the pull-down member to drive the blocking door (8) to apply pressure to the inner side of the accommodating chamber (103) so that the arc-shaped push plate (805) seals the opening of the accommodating chamber (103) and the blocking door (8) is locked by the pull-down member.

4. The hot and cold shock test device for adhesive backing according to claim 3, characterized in that: The arc-shaped push plate (805) is formed with a first inclined surface (8051), a plane (8053), and a second inclined surface (8052) connected in sequence on one side away from the accommodating chamber (103); when the blocking door (8) blocks the opening of the accommodating chamber (103), the first inclined surface (8051) and the second inclined surface (8052) gradually move away from the accommodating chamber (103) in the direction of the plane (8053) until they are connected at the same height as the plane (8053).

5. The hot and cold shock test device for adhesive backing according to claim 4, characterized in that: There are two pull-down members and they are located on the front and rear sides of the cooling box (3) in a one-to-one correspondence; there are two pull-up members and they are located on the front and rear sides of the heating box (2) in a one-to-one correspondence; there are two push plates and they are located on the front and rear sides of the insulating tube (1) in a one-to-one correspondence; the push plates located on the front side of the insulating tube (1) are fixedly mounted on the blocking door (8).

6. The hot and cold shock test device for adhesive backing according to claim 5, characterized in that: A first pad (20) is fixedly mounted on the first L-plate (6) located on the front side of the cooling box (3), and a ball (21) is rollingly embedded in the first pad (20). During the clockwise rotation of the insulating cylinder (1), the first inclined surface (8051) first abuts against the ball (21) so that the pull-down member gradually increases the squeezing force on the blocking door (8) until the squeezing force on the blocking door (8) reaches a maximum when the plane (8053) abuts against the ball (21).

7. The hot and cold shock test device for adhesive backing according to claim 2, characterized in that: The first pressure plate (13) and the second pressure plate (14) are both made of rubber.

8. The hot and cold shock test device for adhesive backing according to claim 1, characterized in that: Based on the opening of the vent hole (101) and the accommodating cavity (103), an arc plate (102) is formed on the insulating cylinder (1), and the inner wall of the arc plate (102) is elastically rotated to be provided with two fixing parts for fixing the two ends of the adhesive backing in a one-to-one manner. Two push rods (803) corresponding to the two fixing parts are fixedly installed on the blocking door (8). When the blocking door (8) rotates to block the opening of the accommodating cavity (103), the two fixing parts are driven to clamp the two ends of the adhesive backing in a one-to-one manner. When the blocking door (8) is opened, the two fixing parts are driven to release the clamping of the adhesive backing.

9. The hot and cold shock test device for adhesive backing according to claim 8, characterized in that: The fixing member includes a pull plate (16), a pull rod (17), and a swing plate (18) that are fixedly connected. The swing plate (18) is elastically rotatably connected to the inner wall of the arc plate (102). One end of the pull rod (17) is fixedly connected to the swing plate (18), and the other end is fixedly connected to the pull plate (16). When the blocking door (8) rotates to block the opening of the accommodating cavity (103), the push rod (803) pushes the pull plate (16) to pull the swing plate (18) to rotate elastically so as to squeeze and clamp the back glue between the swing plate (18) and the arc plate (102).

10. The hot and cold shock test device for adhesive backing according to claim 9, characterized in that: The swing plate (18) includes an integrally arranged abutment plate (1801) and a clamping plate (1802); a shaft (1803) is inserted between the abutment plate (1801) and the clamping plate (1802); two groups of support blocks (104) are fixedly mounted on the inner wall of the arc plate (102) and are rotatably connected to the shafts (1803) on the two fixing members in a one-to-one correspondence; a compression spring (24) is fixedly connected between the clamping plate (1802) and the inner wall of the arc plate (102).

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