Device for detecting thermal deformation resistance of PVC decorative film based on new material

Abstract

The invention discloses a device for detecting the thermal deformation resistance of a PVC decorative film based on a new material, and relates to the technical field of PVC decorative film production. The device comprises a detection mechanism, a plurality of electric push rods are symmetrically and fixedly installed on the inner wall of the detection mechanism, a U-shaped frame is fixedly installed on the opposite sides of the telescopic ends of the multiple electric push rods, a blowing device for detecting the decorative film through wind power is arranged around the U-shaped frame, and an anti-pollution device for guaranteeing cleanliness of the decorative film is arranged below the blowing device. Two pressing blocks are symmetrically and slidably mounted at the two ends of the inner wall of the U-shaped frame, limiting blocks are fixedly mounted on the surfaces of the pressing blocks, and a threaded rod is rotatably mounted at the edge of the bottom of the inner wall of the U-shaped frame. Through autorotation of the smoothing roller and overturning of the U-shaped plate, it is guaranteed that the decorative film is laid at the bottom of the inner wall of the U-shaped frame in a non-wrinkle posture, and meanwhile the situation that due to the fact that the wrinkled decorative film is fixed by the pressing block, detection data errors are caused is avoided.

Description

Technical Field

[0001] This invention relates to the field of PVC decorative film production technology, specifically to a device for testing the heat resistance deformation performance of PVC decorative film based on a new material. Background Technology

[0002] PVC decorative film is a widely used material in home decoration and other fields. It features diverse designs, waterproofing, wear resistance, and easy cleaning, making it a practical and economical decorative material. However, after the PVC decorative film is produced, its deformation performance needs to be tested to check whether its performance meets the standards.

[0003] Patent publication number CN216791830U discloses a device for testing the heat resistance deformation performance of PVC decorative film. The device includes a hollow base with a top cover attached to its upper surface. Slide grooves are formed on both sides of the inner wall of the base, with clamping mechanisms slidably connected to both ends of the grooves. A testing mechanism is slidably connected to one side of the clamping mechanism and is located within the slide grooves. A heating device and a humidifier are installed inside the base. This patent solves the problem that existing technologies cannot test the heat resistance deformation performance of PVC decorative film at constant high temperatures. It features a simple structure, high accuracy of test results, and the ability to test the deformation performance of PVC decorative film at constant high temperatures according to specific requirements.

[0004] However, the device also has shortcomings: it can test the deformation performance of PVC decorative film at a constant high temperature, but when the decorative film is fixed and the deformation performance is tested, the fixed end of the decorative film that is not completely flat is prone to wrinkles during the fixing process, which can increase the error of the deformation performance data of the decorative film and reduce the accuracy of the test data to a certain extent. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a device for testing the heat resistance deformation performance of PVC decorative film based on a new material, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for testing the heat resistance deformation performance of a new material PVC decorative film, comprising a testing mechanism, wherein a plurality of electric push rods are symmetrically and fixedly installed on the inner wall of the testing mechanism, and a U-shaped frame is fixedly installed on one side of the telescopic ends of the plurality of electric push rods. A blowing device for testing the decorative film by wind power is arranged around the U-shaped frame, and an anti-pollution device for ensuring the cleanliness of the decorative film is arranged below the blowing device. Two pressing blocks are symmetrically and slidably installed at both ends of the inner wall of the U-shaped frame, and a limit block is fixedly installed on the surface of the pressing block. A threaded rod is rotatably installed at the bottom edge of the inner wall of the U-shaped frame. A connecting rod is fixedly installed on the side of the pressing block near the center of the U-shaped frame. A U-shaped plate is rotatably installed on the outer wall of the connecting rod through a torsion spring. The outer wall of the U-shaped plate away from the electric push rod contacts the limit block, and a smoothing roller is rotatably installed inside the U-shaped plate.

[0007] According to the above technical solution, the bottom of the detection mechanism is connected to an external humidification mechanism, and the humidification mechanism adjusts the humidity inside the detection mechanism. A cover plate is provided on the top of the detection mechanism, which seals the detection mechanism when the detection work begins. A heating mechanism is provided on the top of the cover plate, which adjusts the temperature according to the detection requirements. A display mechanism is provided on the left side of the detection mechanism, which records and displays the detection data. Two fixed plates are symmetrically arranged inside the detection mechanism.

[0008] According to the above technical solution, the outer wall of the U-shaped frame is slidably connected to the inner wall of the detection mechanism. The bottom of the pressing block is made of a soft material. The outer wall of the threaded rod passes through and is movably installed inside the pressing block. The connecting rod enables the pressing blocks at both ends to move up and down synchronously. The U-shaped plate automatically resets after flipping via a torsion spring. The smoothing roller acts to flatten the decorative film. The two ends of the decorative film to be tested are placed at the bottom of the inner wall of the U-shaped frame. The threaded rod is rotated. When the threaded rod rotates along the inner wall of the U-shaped frame, it drives the pressing block to slide downwards along the inner wall of the U-shaped frame. The pressing block fixes the two ends of the decorative film. The cover is closed and the heating mechanism is activated. The heating mechanism heats the inside of the detection mechanism. At the same time, the external humidification mechanism sprays water mist from bottom to top to humidify. Then, the electric push rod is activated. The telescopic end of the electric push rod pulls the U-shaped frame away from the center of the detection mechanism. The process causes the decorative film to gradually stretch and deform from a taut state, allowing for testing of its heat resistance and deformation properties. The test data is displayed and easily recorded. As the pressing block moves downward, it drives the connecting rod to move synchronously. The connecting rod causes the pressing blocks at both ends to press the decorative film with equal force. Simultaneously, the connecting rod drives the U-shaped plate to move synchronously, which in turn drives the smoothing roller to move synchronously. When the bottom of the outer wall of the smoothing roller contacts the bottom of the inner wall of the U-shaped frame, a resistance force is generated. This resistance force causes the U-shaped plate to rotate. The U-shaped plate is limited by the limiting block, causing it to rotate along the outer wall of the connecting rod towards the electric push rod. The U-shaped plate drives the smoothing roller to move synchronously. The smoothing roller begins to rotate due to the friction between itself and the decorative film. During its rotation and movement, the smoothing roller smooths the fixed end of the decorative film laid on the bottom of the inner wall of the U-shaped frame, facilitating fixation by the pressing block.

[0009] According to the above technical solution, the blowing device includes an L-shaped plate. The bottom of the L-shaped plate is fixedly installed on the outer wall of the U-shaped frame near the electric push rod. A round wheel is rotatably installed inside the top of the L-shaped plate. A fan is slidably installed on the inner wall of the detection mechanism through a spring. A semi-circular block is fixedly installed at the bottom of the fan.

[0010] According to the above technical solution, the fan achieves longitudinal reset on the inner wall of the detection mechanism through a spring. The arc surface of the semicircular block is located on the trajectory of the wheel. The semicircular block provides the longitudinal force for the fan. When the U-shaped frame moves horizontally, it drives the L-shaped plate to move synchronously. The L-shaped plate drives the wheel to move synchronously. During the horizontal movement of the wheel, it contacts the bottom of the semicircular block. When the wheel contacts the semicircular block, friction is generated. At this time, the wheel rotates inside the L-shaped plate while resisting the semicircular block. The resistance of the wheel causes the fan to slide upward along the inner wall of the detection mechanism. Then the fan is reset by the spring. This process is repeated. During the stretching of the decorative film, the fan moves up and down to blow the decorative film, applying oscillating compressive stress to the decorative film to simulate the heat accumulation method. The fan can be manually controlled to open or close.

[0011] According to the above technical solution, a vertical plate is fixedly installed at the bottom of the L-shaped plate, and telescopic baffles are fixedly installed at both ends of the inner wall of the detection mechanism. The outer wall of the telescopic end of the telescopic baffle is fixedly connected to the surface of the vertical plate. The telescopic baffle is located directly above the humidification path of the humidification mechanism. A bent plate is fixedly installed at the top of the telescopic end of the telescopic baffle. The bottom of the bent plate near the electric push rod is slidably installed at the top of the telescopic end of the telescopic baffle. When the L-shaped plate moves horizontally, it drives the vertical plate to move synchronously. When the vertical plate moves horizontally, it pulls the telescopic end of the telescopic baffle to retract inward to its fixed end. At this time, the telescopic baffle opens to block the upper part of the detection mechanism, allowing heat to flow downward. The telescopic baffle drives the bent plate to slide along the top of the fixed end. The bent plate guides the dripping humidification mist through its own inclined surface, reducing the residual moisture inside the upper part of the detection mechanism after the detection is completed.

[0012] According to the above technical solution, the anti-pollution device includes a toothed plate, the top of which is fixedly installed at the bottom of the vertical plate. A gear is rotatably installed on the bottom of the inner wall of the detection mechanism, and the gear meshes with the toothed plate. A reciprocating screw is fixedly installed at the center of the top of the gear, and an activated carbon plate is movably installed through the outer wall of the reciprocating screw.

[0013] According to the above technical solution, the vertical plate provides a power source for the toothed plate. The bottom of the toothed plate is slidably installed on the bottom of the inner wall of the detection mechanism. The activated carbon plate is slidably installed on the inner wall of the detection mechanism on the side away from the vertical plate. The activated carbon plate purifies the humidifying water source to ensure that the decorative film is not contaminated. The vertical plate drives the toothed plate to move horizontally along the bottom of the inner wall of the detection mechanism. When the toothed plate moves horizontally, it causes the meshing gear to rotate. The gear drives the reciprocating screw to rotate. When the reciprocating screw rotates, it drives the activated carbon plate to slide up and down along the inner wall of the detection mechanism through the non-self-locking reciprocating spiral groove on its outer wall. During the up and down movement of the activated carbon plate, it intercepts and contacts the humidifying water source, prolonging the contact time between the humidifying water source and its bottom, while continuously changing the contact position between the water source and itself.

[0014] According to the above technical solution, a crossbar is fixedly installed inside the activated carbon plate. A contact plate is rotatably installed on the outer wall of the crossbar through a torsion spring. A contact roller is rotatably installed at the bottom center of the contact plate. A filter cotton block is provided at the bottom of the inner wall of the detection mechanism. The filter cotton block is used to filter impurities in the humidified water source. An elastic telescopic frame is fixedly installed on the outer wall of the filter cotton block. The telescopic end of the elastic telescopic frame contacts the inclined surface of the contact plate. The activated carbon plate drives the crossbar to move upward and reset. The crossbar drives the contact plate to move synchronously. When the contact plate moves upward, it gradually releases the restriction on the telescopic end of the elastic telescopic frame. Since the spring force of the torsion spring is greater than the spring force of the elastic telescopic frame, the contact plate will resist the reset of the elastic telescopic frame when it resets. The telescopic end of the elastic telescopic frame, which has been released from restriction, pulls the filter cotton block to deform. When the filter cotton block deforms and extends, it expands the small gaps inside itself and changes the distribution direction of the water source impurities trapped inside itself.

[0015] This invention provides a device for testing the heat resistance deformation performance of a novel PVC decorative film. It offers the following advantages:

[0016] (1) This invention uses an electric push rod, a U-shaped frame, a pressing block, a threaded rod, a connecting rod, a U-shaped plate, and a smoothing roller in combination. Through the humidification mechanism and the heating mechanism, it is convenient to detect the changes in the deformation properties of the decorative film under different temperature and humidity changes, thereby improving the accuracy and scope of the equipment for testing decorative films. At the same time, the pressing block effectively fixes the decorative film, avoiding slippage during the testing process and reducing data accuracy. Through the rotation of the smoothing roller and the flipping of the U-shaped plate, the decorative film is ensured to be laid in a non-wrinkled position on the bottom of the inner wall of the U-shaped frame. At the same time, it avoids errors in the test data caused by the pressing block fixing the wrinkled decorative film.

[0017] (2) The present invention, through the setting of the blowing device, through the cooperation of U-shaped frame, L-shaped plate, wheel, fan, semi-circular block, vertical plate, telescopic baffle and bending plate, improves the uniformity of the blowing of the decorative film by the up and down blowing of the fan during the deformation process of the decorative film. At the same time, the blowing of the wind can be used to observe whether the decorative film is cracked during the deformation process, so as to detect the stability and heat resistance of the decorative film in high temperature environment. The vertical plate opens the cover of the telescopic baffle, which facilitates the mixing and diffusion of internal heat and humidity when the testing mechanism is used, ensuring that the overall humidity and heat inside the testing mechanism are relatively balanced. Moreover, after the telescopic baffle is reset, it realizes the separation of dry and wet at the top and bottom, which is convenient for maintenance.

[0018] (3) The present invention improves the purification effect of humidifying water source by setting up an anti-pollution device, which is composed of a vertical plate, a toothed plate, a gear, a reciprocating screw, an activated carbon plate, a horizontal bar, a contact plate, a filter cotton block and an elastic telescopic frame. The activated carbon plate moves up and down to improve the purification effect of humidifying water source, avoid poorly treated water source from invading the decorative film and causing odor pollution, and prevent the humidifying water source from always being in contact with the activated carbon plate in the same position, which would increase the local wear of the activated carbon plate. The deformation and reset of the filter cotton block ensures the cleanliness of the humidifying water source and prevents water source impurities from adhering to the surface of the decorative film and changing the stress it is subjected to, thus affecting the test results. At the same time, when the deformation and reset occurs, it promotes the more uniform distribution of impurities in the water inside itself, avoiding excessive accumulation and thus blocking the flow of humidifying water source. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the entire invention;

[0020] Figure 2 This is a cross-sectional schematic diagram of the entire invention;

[0021] Figure 3 This is a schematic diagram of the peripheral structure of the U-shaped frame of the present invention;

[0022] Figure 4This is a cross-sectional schematic diagram of the peripheral structure of the U-shaped frame of the present invention;

[0023] Figure 5 This is a schematic diagram of the blowing device of the present invention;

[0024] Figure 6 This is a schematic diagram from the left side of the blowing device of the present invention;

[0025] Figure 7 This is a schematic diagram of the pollution prevention device of the present invention;

[0026] Figure 8 This is a schematic diagram of the bottom view of the anti-pollution device of the present invention.

[0027] In the diagram: 1. Detection mechanism; 2. Cover plate; 3. Heating mechanism; 4. Display mechanism; 5. Fixing plate; 6. Electric push rod; 7. U-shaped frame; 8. Pressing block; 9. Threaded rod; 10. Linking rod; 11. U-shaped plate; 12. Smoothing roller; 13. Blowing device; 131. L-shaped plate; 132. Wheel; 133. Fan; 134. Semi-circular block; 135. Vertical plate; 136. Telescopic baffle; 137. Bending plate; 14. Anti-pollution device; 141. Toothed plate; 142. Gear; 143. Reciprocating screw; 144. Activated carbon plate; 145. Crossbar; 146. Contact plate; 147. Filter cotton block; 148. Elastic telescopic frame. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Please see Figures 1-8 One embodiment of the present invention is: a heat resistance deformation test device based on a new material PVC decorative film, comprising a test mechanism 1, wherein a plurality of electric push rods 6 are symmetrically and fixedly installed on the inner wall of the test mechanism 1, and a U-shaped frame 7 is fixedly installed on one side opposite to the telescopic ends of the plurality of electric push rods 6. A blowing device 13 for detecting the decorative film by wind is arranged around the U-shaped frame 7, and an anti-pollution device 14 for ensuring the cleanliness of the decorative film is arranged below the blowing device 13. Two pressing blocks 8 are symmetrically and slidably installed at both ends of the inner wall of the U-shaped frame 7, and a limit block is fixedly installed on the surface of the pressing block 8. A threaded rod 9 is rotatably installed at the bottom edge of the inner wall of the U-shaped frame 7. A connecting rod 10 is fixedly installed on the side of the pressing block 8 near the center of the U-shaped frame 7. A U-shaped plate 11 is rotatably installed through the outer wall of the connecting rod 10 by a torsion spring. The outer wall of the U-shaped plate 11 away from the electric push rod 6 contacts the limit block. A smoothing roller 12 is rotatably installed inside the U-shaped plate 11.

[0030] The bottom of the testing mechanism 1 is connected to an external humidification mechanism, which regulates the humidity inside the testing mechanism 1. A cover plate 2 is provided on the top of the testing mechanism 1, which seals the testing mechanism 1 when the testing work begins. A heating mechanism 3 is provided on the top of the cover plate 2, which adjusts the temperature according to the testing requirements. A display mechanism 4 is provided on the left side of the testing mechanism 1, which records and displays the testing data. Two fixing plates 5 are symmetrically arranged inside the testing mechanism 1.

[0031] The outer wall of the U-shaped frame 7 is slidably connected to the inner wall of the detection mechanism 1. The bottom of the pressing block 8 is made of soft material. The outer wall of the threaded rod 9 is penetrated and movably installed inside the pressing block 8. The linkage rod 10 realizes the synchronous up and down movement of the pressing blocks 8 at both ends. The U-shaped plate 11 realizes automatic reset after flipping through the torsion spring. The smoothing roller 12 acts to flatten the decorative film.

[0032] The humidification and heating mechanisms 3 facilitate the detection of changes in the deformation properties of the decorative film under different temperature and humidity conditions, thereby improving the accuracy and versatility of the equipment for decorative film testing. At the same time, the pressing block 8 effectively fixes the decorative film, preventing slippage during the testing process and reducing data accuracy. The rotation of the smoothing roller 12 and the flipping of the U-shaped plate 11 ensure that the decorative film is laid in a non-wrinkled position on the bottom of the inner wall of the U-shaped frame 7, while also preventing errors in the test data caused by the pressing block 8 fixing the wrinkled decorative film.

[0033] In use, place both ends of the decorative film to be tested into the bottom of the inner wall of the U-shaped frame 7. Rotate the threaded rod 9. As the threaded rod 9 rotates along the inner wall of the U-shaped frame 7, it drives the pressing block 8 to slide downwards along the inner wall of the U-shaped frame 7, fixing both ends of the decorative film. Close the cover plate 2 and start the heating mechanism 3. The heating mechanism 3 heats the inside of the testing mechanism 1. At the same time, the external humidification mechanism sprays water mist from bottom to top to humidify. Then, start the electric push rod 6. The telescopic end of the electric push rod 6 pulls the U-shaped frame 7 away from the center of the testing mechanism 1, causing the decorative film to gradually stretch and deform from a taut state. The heat resistance and deformation performance of the decorative film are tested, and the test data is displayed through the display mechanism 4 for easy recording. When the pressing block 8 moves downwards, it drives... The linkage 10 moves synchronously, causing the pressing blocks 8 at both ends to press the decorative film with equal force. At the same time, the linkage 10 drives the U-shaped plate 11 to move synchronously, and the U-shaped plate 11 drives the smoothing roller 12 to move synchronously. When the bottom of the outer wall of the smoothing roller 12 contacts the bottom of the inner wall of the U-shaped frame 7, a resisting force is generated. With the help of the resisting force, the U-shaped plate 11 generates a rotational force. The U-shaped plate 11 is limited by the limiting block, so that it rotates along the outer wall of the linkage 10 towards the electric push rod 6. The U-shaped plate 11 drives the smoothing roller 12 to move synchronously. The smoothing roller 12 starts to rotate due to the friction between it and the decorative film. During the rotation and movement of the smoothing roller 12, it smooths the fixed end of the decorative film laid on the bottom of the inner wall of the U-shaped frame 7, making it easier for the pressing blocks 8 to fix it.

[0034] According to the above embodiments, the humidification mechanism and the heating mechanism 3 facilitate the detection of changes in the deformation properties of the decorative film under different temperature and humidity conditions, thereby improving the accuracy and scope of the equipment's testing of the decorative film. At the same time, the pressing block 8 effectively fixes the decorative film, preventing slippage during the testing process and reducing data accuracy. The rotation of the smoothing roller 12 and the flipping of the U-shaped plate 11 ensure that the decorative film is laid in a non-wrinkled position on the bottom of the inner wall of the U-shaped frame 7, while also preventing errors in the test data caused by the pressing block 8 fixing the wrinkled decorative film.

[0035] Please see Figures 1-8 Based on the above embodiments, another embodiment of the present invention further includes a blowing device 13;

[0036] The blowing device 13 includes an L-shaped plate 131. The bottom of the L-shaped plate 131 is fixedly installed on the outer wall of the U-shaped frame 7 near the electric push rod 6. A round wheel 132 is rotatably installed inside the top of the L-shaped plate 131. A fan 133 is slidably installed on the inner wall of the detection mechanism 1 by a spring. A semi-circular block 134 is fixedly installed at the bottom of the fan 133.

[0037] The fan 133 is longitudinally reset on the inner wall of the detection mechanism 1 by means of a spring. The arc surface of the semicircular block 134 is located on the movement trajectory of the wheel 132. The semicircular block 134 provides the force for the longitudinal movement of the fan 133.

[0038] A vertical plate 135 is fixedly installed at the bottom of the L-shaped plate 131. Telescopic baffles 136 are fixedly installed at both ends of the inner wall of the detection mechanism 1. The outer wall of the telescopic end of the telescopic baffle 136 is fixedly connected to the surface of the vertical plate 135. The telescopic baffle 136 is located directly above the humidification path of the humidification mechanism. A bent plate 137 is fixedly installed at the top of the telescopic end of the telescopic baffle 136. The bottom of the bent plate 137 near the electric push rod 6 is slidably installed at the top of the telescopic end of the telescopic baffle 136.

[0039] By blowing the decorative film up and down during the deformation process of the decorative film by the fan 133, the uniformity of the wind blowing on the decorative film is improved. At the same time, the wind blowing is used to observe whether the decorative film breaks during the deformation process, so as to test the stability and heat resistance of the decorative film in a high-temperature environment. The vertical plate 135 opens the cover of the telescopic baffle 136, which facilitates the mixing and diffusion of internal heat and humidity when the testing mechanism 1 is used, ensuring that the overall humidity and heat inside the testing mechanism 1 are relatively balanced. Moreover, after the telescopic baffle 136 is reset, it realizes the separation of dry and wet areas, which is convenient for maintenance.

[0040] In use, when the U-shaped frame 7 moves horizontally, it drives the L-shaped plate 131 to move synchronously. The L-shaped plate 131 drives the wheel 132 to move synchronously. During the horizontal movement, the wheel 132 contacts the bottom of the semicircular block 134. Friction is generated when the wheel 132 contacts the semicircular block 134. At this time, the wheel 132 rotates inside the L-shaped plate 131 while resisting the semicircular block 134. The resistance of the wheel 132 causes the fan 133 to slide upward along the inner wall of the detection mechanism 1. Then the fan 133 is reset by the spring. This process is repeated. During the stretching of the decorative film, the fan 133 moves up and down to blow the decorative film. The decorative film is subjected to oscillating compressive stress to simulate heat accumulation, and the fan 133 can be manually controlled to open or close. When the L-shaped plate 131 moves horizontally, it drives the vertical plate 135 to move synchronously. When the vertical plate 135 moves horizontally, it pulls the telescopic baffle 136 to retract towards its fixed end. At this time, the telescopic baffle 136 opens to block the upper part of the detection mechanism 1, allowing heat to flow downwards. The telescopic baffle 136 also drives the bending plate 137 to slide along the top of the fixed end. The bending plate 137 guides the dripping humidifying water mist through its own inclined surface, reducing the residual moisture inside the upper part of the detection mechanism 1 after the detection is completed.

[0041] According to the above embodiment, the uniformity of the decorative film being blown by the wind is improved by the up and down blowing of the fan 133 during the deformation process of the decorative film. At the same time, the wind blowing is used to observe whether the decorative film is cracked during the deformation process, so as to detect the stability and heat resistance of the decorative film in a high-temperature environment. The vertical plate 135 opens the cover of the telescopic baffle 136, which facilitates the mixing and diffusion of heat and humidity inside the detection mechanism 1 during use, ensuring that the overall humidity and heat inside the detection mechanism 1 are relatively balanced. After the telescopic baffle 136 is reset, it realizes the separation of dry and wet areas, which is convenient for maintenance.

[0042] Please see Figures 1-8 Based on the above embodiments, another embodiment of the present invention further includes an anti-pollution device 14;

[0043] The anti-pollution device 14 includes a toothed plate 141. The top of the toothed plate 141 is fixedly installed at the bottom of the vertical plate 135. A gear 142 is rotatably installed on the bottom of the inner wall of the detection mechanism 1. The gear 142 meshes with the toothed plate 141. A reciprocating screw 143 is fixedly installed at the center of the top of the gear 142. An activated carbon plate 144 is movably installed through the outer wall of the reciprocating screw 143.

[0044] The vertical plate 135 provides a power source for the toothed plate 141. The bottom of the toothed plate 141 is slidably installed on the bottom of the inner wall of the detection mechanism 1. The activated carbon plate 144 is slidably installed on the inner wall of the detection mechanism 1 on the side away from the vertical plate 135. The activated carbon plate 144 purifies the humidifying water source to ensure that the decorative film is not contaminated.

[0045] A crossbar 145 is fixedly installed inside the activated carbon plate 144. A torsion spring passes through the outer wall of the crossbar 145 and a contact plate 146 is rotatably installed. A contact roller is rotatably installed at the bottom center of the contact plate 146. A filter cotton block 147 is provided at the bottom of the inner wall of the detection mechanism 1. The filter cotton block 147 is used to filter impurities in the humidification water source. An elastic telescopic frame 148 is fixedly installed on the outer wall of the filter cotton block 147. The telescopic end of the elastic telescopic frame 148 contacts the inclined surface of the contact plate 146.

[0046] The reciprocating up-and-down movement of the activated carbon plate 144 enhances the purification effect on the humidifying water source, preventing poorly treated water from damaging the decorative film and causing odor pollution. It also prevents the humidifying water source from always being in contact with the activated carbon plate 144 in the same position, thus reducing local wear on the activated carbon plate 144. The deformation and resetting of the filter cotton block 147 ensures the cleanliness of the humidifying water source, preventing impurities from adhering to the surface of the decorative film and altering its stress to affect the test results. At the same time, the deformation and resetting promotes a more uniform distribution of impurities in the water within itself, preventing excessive accumulation that could obstruct the flow of the humidifying water source.

[0047] In use, the vertical plate 135 drives the toothed plate 141 to move horizontally along the bottom of the inner wall of the detection mechanism 1. When the toothed plate 141 moves horizontally, it causes the meshing gear 142 to rotate. The gear 142 drives the reciprocating screw 143 to rotate. When the reciprocating screw 143 rotates, it drives the activated carbon plate 144 to slide up and down along the inner wall of the detection mechanism 1 through its non-self-locking reciprocating spiral groove on its outer wall. During the up-and-down movement of the activated carbon plate 144, it intercepts and contacts the humidifying water source, prolonging the contact time between the humidifying water source and its bottom, while continuously changing the contact position between the water source and itself. The carbon plate 144 drives the crossbar 145 to move upward and reset. The crossbar 145 drives the contact plate 146 to move synchronously. When the contact plate 146 moves upward, it gradually releases the restriction on the telescopic end of the elastic telescopic frame 148. Since the torsion spring force is greater than the spring force of the elastic telescopic frame 148, the contact plate 146 will resist the elastic telescopic frame 148 when it resets. The telescopic end of the elastic telescopic frame 148, which has been released from restriction, pulls the filter cotton block 147 to deform. When the filter cotton block 147 deforms and extends, it expands the small gaps inside itself and changes the distribution of water source impurities trapped inside itself.

[0048] According to the above embodiments, the reciprocating up-and-down movement of the activated carbon plate 144 enhances the purification effect on the humidification water source, preventing poorly treated water from invading the decorative film and causing odor pollution. At the same time, it prevents the humidification water source from always being in contact with the activated carbon plate 144 in the same position, thus increasing local wear on the activated carbon plate 144. The deformation and reset of the filter cotton block 147 ensures the cleanliness of the humidification water source, preventing impurities in the water source from adhering to the surface of the decorative film and changing its stress to affect the test results. At the same time, during deformation and reset, it promotes a more uniform distribution of impurities in the water within itself, avoiding excessive accumulation that would block the flow of the humidification water source.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for testing the heat resistance deformation performance of a new material PVC decorative film, comprising a testing mechanism (1), characterized in that: The inner wall of the detection mechanism (1) is symmetrically and fixedly equipped with several electric push rods (6). A U-shaped frame (7) is fixedly installed on the opposite side of the telescopic ends of the electric push rods (6). A blowing device (13) for detecting the decorative film by wind is set around the U-shaped frame (7). A pollution prevention device (14) to ensure the cleanliness of the decorative film is set below the blowing device (13). Two pressing blocks (8) are symmetrically and slidably installed at both ends of the inner wall of the U-shaped frame (7). A limit block is fixedly installed on the surface of the pressing block (8). A threaded rod (9) is rotatably installed at the bottom edge of the inner wall of the U-shaped frame (7). A connecting rod (10) is fixedly installed on the side of the pressing block (8) near the center of the U-shaped frame (7). A U-shaped plate (11) is rotatably installed through the outer wall of the connecting rod (10) by a torsion spring. The outer wall of the U-shaped plate (11) away from the electric push rod (6) contacts the limit block. A smoothing roller (12) is rotatably installed inside the U-shaped plate (11).

2. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 1, characterized in that: The bottom of the detection mechanism (1) is connected to an external humidification mechanism, and the humidification mechanism adjusts the humidity inside the detection mechanism (1). The top of the detection mechanism (1) is provided with a cover plate (2), which seals the detection mechanism (1) when the detection work begins. The top of the cover plate (2) is provided with a heating mechanism (3), which adjusts the temperature according to the detection requirements. The left side of the detection mechanism (1) is provided with a display mechanism (4), which records and displays the detection data. The detection mechanism (1) has two fixed plates (5) symmetrically arranged inside.

3. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 2, characterized in that: The outer wall of the U-shaped frame (7) is slidably connected to the inner wall of the detection mechanism (1). The bottom of the pressing block (8) is made of soft material. The outer wall of the threaded rod (9) is penetrated and movably installed inside the pressing block (8). The linkage rod (10) enables the pressing blocks (8) at both ends to move up and down synchronously. The U-shaped plate (11) is automatically reset after flipping by a torsion spring. The smoothing roller (12) acts to flatten the decorative film.

4. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 3, characterized in that: The blowing device (13) includes an L-shaped plate (131), the bottom of which is fixedly installed on the outer wall of the U-shaped frame (7) near the electric push rod (6), and a wheel (132) is rotatably installed inside the top of the L-shaped plate (131). A fan (133) is slidably installed on the inner wall of the detection mechanism (1) by a spring, and a semi-circular block (134) is fixedly installed at the bottom of the fan (133).

5. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 4, characterized in that: The fan (133) is longitudinally reset on the inner wall of the detection mechanism (1) by means of a spring. The arc surface of the semicircular block (134) is located on the movement trajectory of the wheel (132). The semicircular block (134) provides the force for the longitudinal movement of the fan (133).

6. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 5, characterized in that: A vertical plate (135) is fixedly installed at the bottom of the L-shaped plate (131). Telescopic baffles (136) are fixedly installed at both ends of the inner wall of the detection mechanism (1). The outer wall of the telescopic end of the telescopic baffle (136) is fixedly connected to the surface of the vertical plate (135). The telescopic baffle (136) is located directly above the humidification path of the humidification mechanism. A bending plate (137) is fixedly installed at the top of the telescopic end of the telescopic baffle (136). The bottom of the bending plate (137) near the electric push rod (6) is slidably installed at the top of the telescopic end of the telescopic baffle (136).

7. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 6, characterized in that: The pollution prevention device (14) includes a toothed plate (141), the top of which is fixedly installed at the bottom of the vertical plate (135). A gear (142) is rotatably installed on the bottom of the inner wall of the detection mechanism (1). The gear (142) meshes with the toothed plate (141). A reciprocating screw (143) is fixedly installed at the center of the top of the gear (142). An activated carbon plate (144) is movably installed through the outer wall of the reciprocating screw (143).

8. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 7, characterized in that: The vertical plate (135) provides a power source for the toothed plate (141). The bottom of the toothed plate (141) is slidably installed on the bottom of the inner wall of the detection mechanism (1). The activated carbon plate (144) is slidably installed on the inner wall of the detection mechanism (1) on the side away from the vertical plate (135). The activated carbon plate (144) purifies the humidified water source to ensure that the decorative film is not contaminated.

9. The device for testing the heat resistance deformation performance of PVC decorative film based on a new material according to claim 8, characterized in that: A crossbar (145) is fixedly installed inside the activated carbon plate (144). A contact plate (146) is rotatably installed on the outer wall of the crossbar (145) through a torsion spring. A contact roller is rotatably installed at the bottom center of the contact plate (146). A filter cotton block (147) is provided at the bottom of the inner wall of the detection mechanism (1). The filter cotton block (147) is used to filter impurities in the humidified water source. An elastic telescopic frame (148) is fixedly installed on the outer wall of the filter cotton block (147). The telescopic end of the elastic telescopic frame (148) contacts the inclined surface of the contact plate (146).

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