A physical property detection device for PVC composite boards

Abstract

The present invention relates to the technical field of PVC composite board detection, and specifically relates to a physical property detection device for PVC composite boards, including a base. A vertical slide rail is fixedly installed on the upper end surface of the base, and a support arm located in front of the vertical slide rail and fixedly connected thereto. A clamping mechanism for clamping and fixing the PVC composite board is jointly provided on the vertical slide rail and the base. It can simulate various stress conditions of the PVC composite board in actual applications. It can not only test the extrusion toughness of the PVC composite board at different angles and positions, but also evaluate its fatigue performance and impact resistance under long-term dynamic extrusion through static extrusion and dynamic impact tests. In addition, by changing the contact area of extrusion, the compressive toughness of the PVC composite board under different contact areas can be evaluated, providing a comprehensive and real performance evaluation for the toughness detection of the PVC composite board, ensuring that the PVC composite board can maintain good performance under various load conditions, and significantly improving the safety and reliability of the product.

Description

Technical Field

[0001] The present invention relates to the technical field of PVC composite board detection, and specifically to a physical property detection device for PVC composite boards. Background Art

[0002] A PVC composite board is a board formed by compounding polyvinyl chloride and other materials through a certain process. It combines the characteristics of PVC and the advantages of other materials to form a composite material with more diverse properties. Due to the characteristics of light weight, durability, and easy processing of the PVC composite board, it is widely used in the fields of building decoration, furniture manufacturing, waterproof engineering, etc. And toughness, as one of the most important physical properties of the PVC composite board, needs to be sampled and detected before leaving the factory to ensure that the PVC composite board is not easily broken or damaged when subjected to external forces, reducing potential safety hazards.

[0003] Currently, there are the following disadvantages when detecting the toughness of PVC composite boards: 1. When conducting the detection, the PVC composite board is usually placed at a certain angle and fixed at both ends, and then the central suspended part of the PVC composite board is extruded to detect the compressive toughness of the PVC composite board. However, under the test conditions of a single angle, the compressive toughness of the material at other angles cannot be evaluated, and under the test conditions of a single extrusion position, the compressive toughness of the edge of the PVC composite board will be ignored, thus unable to accurately reflect the true performance of the PVC composite board in a complex usage environment, making the test results limited; 2. In actual applications, the PVC composite board will encounter various different contact pressure distributions. Only by extruding and testing the PVC composite board through a single contact area, the compressive toughness of the PVC composite board under different contact areas cannot be comprehensively reflected; 3. During the actual use process of the PVC composite board, it will be subjected to dynamic or periodic extrusion effects. Only through static single extrusion tests, the toughness of the PVC composite board under dynamic extrusion cannot be evaluated, and the dynamic or periodic extrusion effects may cause material fatigue, and static tests cannot evaluate the fatigue performance of the material under long-term dynamic extrusion. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a physical property detection device for PVC composite boards, which is achieved by the following specific technical means: A physical property detection device for PVC composite boards includes a base. A vertical slide rail is fixedly installed on the upper end surface of the base, and a support arm located in front of the vertical slide rail and fixedly connected thereto. A clamping mechanism for clamping and fixing the PVC composite board is jointly provided on the vertical slide rail and the base; The clamping mechanism includes a support part jointly provided on the vertical slide rail and the base for adjusting the detection angle of the PVC composite board. A fixing part is provided on the support part, and a secondary fixing part for cooperating with the fixing part to implement secondary fixing of the PVC composite board, and a locking part for locking the support part is also provided on the support part.

[0005] An extrusion mechanism for dynamically impacting and statically extruding a PVC composite board is provided on the support arm; the extrusion mechanism includes a moving part provided on the support arm, and an extrusion part for cooperating with the moving part to detect different parts of the PVC composite board is provided on the moving part, and a reciprocating part for cooperating with the extrusion part to reciprocally impact the PVC composite board is also provided on the moving part.

[0006] An actuating mechanism for changing the contact area of extruding the PVC composite board is provided on the extrusion part; the actuating mechanism includes a main body part provided on the extrusion part, and a contact part is provided on the main body part.

[0007] The main body part includes a hinge seat, a connecting seat and a first contact circular plate. The telescopic end of the cylinder is fixedly installed with a hinge seat. The hinge seat is hinged with a connecting seat through a set connecting shaft, and a first contact circular plate is fixedly installed on the lower end surface of the connecting seat.

[0008] The contact part includes a second contact circular plate, a third contact circular plate and a limiting ring. The second contact circular plate is threadedly connected to the circumferential wall of the first contact circular plate. The third contact circular plate is threadedly connected to the outer circumferential wall of the second contact circular plate. A limiting ring located above the second contact circular plate is fixedly installed on the first contact circular plate, and a limiting ring located above the third contact circular plate is also fixedly installed on the second contact circular plate.

[0009] As a preferred technical solution of the present invention, the supporting part includes a first slideway, a supporting seat, a first screw, a first motor, a clamping base and a first spring. A first slideway located below the support arm is opened on the upper end surface of the base. A support seat is slidably installed in both the first slideway and the front end of the vertical slide rail. On the mutually approaching side walls of the front and rear support seats, two symmetrically arranged support frames are provided on each side. A first screw threadedly connected to the rear support seat is installed through the bearing in the vertical slide rail. A first motor with an output end fixedly connected to the first screw is fixedly installed on the vertical slide rail. A clamping base is hinged between the two support frames on the same support seat. A rubber gasket is provided on the upper end surface of the clamping base. A first spring is fixedly installed between the front support seat and the rear end surface of the first slideway.

[0010] As a preferred technical solution of the present invention, the fixing part includes a fixing block, an upper clamping plate and a second screw. A fixing block is fixedly installed on the upper end surface of the clamping base. An upper clamping plate for cooperating with the clamping base to clamp the PVC composite board is slidably installed up and down through a set chute in the fixing block. A rubber gasket is also provided on the lower end surface of the upper clamping plate. A second screw threadedly connected to the upper clamping plate is installed through the bearing in the fixing block.

[0011] As a preferred technical solution of the present invention, the secondary fixing portion includes an L-shaped fixing plate, a mating groove, a connecting rod, a hinged rod, a rocker, a second spring, and a mating insertion rod. The upper end surface of the clamping base is hinged with symmetrically arranged L-shaped fixing plates on the left and right. A connecting rod is fixedly installed on the symmetrically arranged L-shaped fixing plates on the left and right. A mating groove is formed in the clamping base below the fixed block. A sliding hole penetrating through its upper end surface and communicating with the mating groove is formed in the clamping base. A rocker with one end located below the sliding hole is hinged in the mating groove through a shaft rod. The other end of the rocker is hinged with a hinged rod hinged to the connecting rod. A second spring is fixedly installed between the upper side wall inside the mating groove and the rocker. A mating insertion rod slidably connected to the sliding hole is fixedly installed on the lower end surface of the upper clamping plate.

[0012] As a preferred technical solution of the present invention, the locking portion includes a locking rod, a pulling plate, and a locking hole. The locking rod is slidably installed in the insertion holes symmetrically penetrating through the front support seat on the left and right. A pulling plate is fixedly installed on the upper ends of the locking rods together. A number of locking holes matching the insertion holes are formed in the base in a linear array.

[0013] As a preferred technical solution of the present invention, the moving portion includes a second slideway, a support slider, a third screw rod, and a second motor. A second slideway is formed through the support arm. A support slider is slidably installed in the second slideway. A third screw rod threadedly connected to the support slider is installed in the second slideway through a bearing. A second motor with an output end fixedly connected to the third screw rod is fixedly installed on the support arm.

[0014] As a preferred technical solution of the present invention, the pressing portion includes a sliding cylinder, a cylinder, a mating plate, and a third spring. A sliding cylinder is slidably penetrated through the support slider. A cylinder is fixedly installed in the sliding cylinder. The upper end of the sliding cylinder is arc-shaped. A hinge seat is fixedly installed at the telescopic end of the cylinder. Symmetrically arranged mating plates are fixedly installed at the upper end of the sliding cylinder. A third spring is fixedly installed between the mating plate and the support slider.

[0015] As a preferred technical solution of the present invention, the reciprocating portion includes a rotating shaft seat, a third motor, and a cam. Symmetrically arranged rotating shaft seats are fixedly installed on the upper end surface of the support slider through the provided support rods. A cam located above the sliding cylinder is rotatably installed between the rotating shaft seats. A third motor with an output end fixedly connected to the cam is fixedly installed on one of the rotating shaft seats.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The physical property detection device for the PVC composite board can simulate various stress conditions of the PVC composite board in actual applications through the combined use of the clamping mechanism, the extrusion mechanism, and the execution mechanism. It can not only test the extrusion toughness of the PVC composite board at different angles and positions, but also evaluate its fatigue performance and impact resistance under long-term dynamic extrusion through static extrusion and dynamic impact tests. In addition, by changing the contact area of extrusion, it can accurately simulate and evaluate the compressive toughness of the PVC composite board under different contact areas. These functions work together to provide a comprehensive and realistic performance evaluation for the toughness detection of the PVC composite board.

[0017] 2. The physical property detection device for the PVC composite board can change the angle of the PVC composite board during the test through the combined use of the clamping mechanism and the extrusion mechanism to test the extrusion toughness of the PVC composite board when it is stressed at different angles under actual use conditions, and can also perform extrusion toughness tests on different positions of the PVC composite board during the test, more realistically simulating various stress conditions that the PVC composite board may encounter in actual use.

[0018] 3. The physical property detection device for the PVC composite board can apply static extrusion to the PVC composite board through the set extrusion mechanism to test its extrusion toughness, and can also perform dynamic impact on the PVC composite board to test its impact resistance, so as to test the fatigue performance of the PVC composite board under long-term dynamic extrusion, thereby ensuring that the PVC composite board can maintain good performance under different load conditions through comprehensive tests, and improving the safety and reliability of the product.

[0019] 4. The physical property detection device for the PVC composite board can change the contact area of direct extrusion on the PVC composite board through the set execution mechanism to simulate the state of the PVC composite board being extruded by different contact areas in actual applications, and directly reflect the compressive toughness of the PVC composite board under different contact areas, thereby providing a more realistic performance evaluation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram when the present invention is working.

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the clamping mechanism of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the secondary fixing part of the present invention.

[0024] Figure 5It is a schematic diagram of the cross-sectional three-dimensional structure of the secondary solid part of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the extrusion mechanism of the present invention.

[0026] Figure 7 It is a bottom-up stereoscopic structural schematic diagram of the main body of the present invention.

[0027] Figure 8 It is a schematic cross-sectional three-dimensional structure diagram of the actuator of the present invention.

[0028] In the figure: 1, base; 2, vertical slide rail; 3, support arm; 4, clamping mechanism; 41, support part; 411, first slide; 412, support seat; 413, first screw rod; 414, first motor; 415, clamping base; 416, first spring; 42, fixing part; 421, fixing block; 422, upper clamping plate; 423, second screw rod; 43, secondary fixing part; 431, L-shaped fixing plate; 432, matching groove; 433, connecting rod; 434, hinge rod; 435, seesaw; 436, second spring; 437, matching plug rod; 44, locking part; 441, locking rod; 442, pull plate ;443, lock hole;5, extrusion mechanism;51, moving part;511, second slide;512, supporting slider;513, third screw;514, second motor;52, extrusion part;521, slide;522, cylinder;523, matching plate;524, third spring;53, reciprocating part;531, shaft seat;532, third motor;533, cam;6, actuator;61, main body;611, hinged seat;612, connecting seat;613, first contact circular plate;62, contact part;621, second contact circular plate;622, third contact circular plate;623, limit ring. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1, a physical property detection device for PVC composite boards, including a base 1. On the upper end face of the base 1, a vertical slide rail 2 and a support arm 3 located in front of the vertical slide rail 2 and fixedly connected to it are fixedly installed. A clamping mechanism 4 for clamping and fixing the PVC composite board is jointly arranged on the vertical slide rail 2 and the base 1; the clamping mechanism 4 includes a support part 41 jointly arranged on the vertical slide rail 2 and the base 1 for adjusting the detection angle of the PVC composite board. A fixing part 42 and a secondary fixing part 43 for cooperating with the fixing part 42 to secondarily fix the PVC composite board are arranged on the support part 41. A locking part 44 for locking the support part 41 is also arranged on the support part 41.

[0031] Please refer to Figure 1 , an extrusion mechanism 5 for dynamically impacting and statically extruding the PVC composite board is arranged on the support arm 3; the extrusion mechanism 5 includes a moving part 51 arranged on the support arm 3. An extrusion part 52 for cooperating with the moving part 51 to detect different parts of the PVC composite board is arranged on the moving part 51. A reciprocating part 53 for reciprocatingly impacting the PVC composite board in cooperation with the extrusion part 52 is also arranged on the moving part 51.

[0032] Please refer to Figure 1 , an actuating mechanism 6 for changing the contact area of extruding the PVC composite board is arranged on the extrusion part 52; the actuating mechanism 6 includes a main body part 61 arranged on the extrusion part 52. A contact part 62 is arranged on the main body part 61.

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the support part 41 includes a first slideway 411, a support seat 412, a first screw rod 413, a first motor 414, a clamping base 415 and a first spring 416. A first slideway 411 located below the support arm 3 is opened on the upper end face of the base 1. Support seats 412 are slidably installed in the first slideway 411 and at the front end of the vertical slide rail 2. On the mutually approaching side walls of the front and rear support seats 412, two symmetrically arranged support frames are provided on each side. A first screw rod 413 threadedly connected to the rear support seat 412 is installed through the vertical slide rail 2 by means of a bearing. A first motor 414 with an output end fixedly connected to the first screw rod 413 is fixedly installed on the vertical slide rail 2. A clamping base 415 is hinged between the two support frames on the same support seat 412. A rubber gasket is arranged on the upper end face of the clamping base 415. A first spring 416 is fixedly installed between the front support seat 412 and the rear end face of the first slideway 411.

[0034] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5, the fixing part 42 includes a fixing block 421, an upper clamping plate 422 and a second screw 423. A fixing block 421 is fixedly installed on the upper end surface of the clamping base 415. An upper clamping plate 422 for cooperating with the clamping base 415 to clamp the PVC composite board is slidably installed up and down on the fixing block 421 through a provided chute. A rubber gasket is also provided on the lower end surface of the upper clamping plate 422. A second screw 423 threadedly connected to the upper clamping plate 422 is installed through the fixing block 421 via a bearing.

[0035] During specific operation, when it is necessary to detect the PVC composite board, place the PVC composite board to be detected between the front and rear support seats 412, then place the rear end of the PVC composite board on the upper end surface of the rear clamping base 415. At this time, the upper clamping plate 422 on this side is located above the PVC composite board. Subsequently, the worker holds an electric rotary tool to rotate the second screw 423 at the rear side, and the upper clamping plate 422 approaches the PVC composite board under the restriction of the chute until the PVC composite board is pressed against the clamping base 415 on this side. The rubber gaskets provided on the clamping base 415 and the upper clamping plate 422 are used to protect the PVC composite board and increase the clamping friction. After completing the clamping and fixing of the rear end of the PVC composite board, repeat the above operation to clamp and fix the front end of the PVC composite board, thereby completing the clamping and fixing operation of the PVC composite board before detection.

[0036] When it is necessary to change the angle of the PVC composite board, start the first motor 414 to rotate the first screw 413, thereby driving the rear support seat 412 to rise. The front and rear clamping bases 415 will then deflect following the angle of the PVC composite board. The front support seat 412 will slide backward in the first slideway 411 to compensate for the deflection distance of the PVC composite board, and stop operating the first motor 414 when a certain angle is reached. At this time, the toughness of the PVC composite board at this angle can be detected through the extrusion mechanism 5 and the actuator 6.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, the secondary fixing part 43 includes an L-shaped fixing plate 431, a mating groove 432, a connecting rod 433, a hinge rod 434, a rocker 435, a second spring 436 and a mating insertion rod 437. The upper end surface of the clamping base 415 is hinged with symmetrically arranged L-shaped fixing plates 431 on the left and right. A connecting rod 433 is fixedly installed on the symmetrically arranged L-shaped fixing plates 431 on the left and right. A mating groove 432 is formed on the clamping base 415 and is located below the fixing block 421. A sliding hole penetrating through the upper end surface of the clamping base 415 and communicating with the mating groove 432 is formed on the clamping base 415. A rocker 435 with one end located below the sliding hole is hinged in the mating groove 432 through a shaft rod. The other end of the rocker 435 is hinged with a hinge rod 434 hinged to the connecting rod 433. A second spring 436 is fixedly installed between the upper side wall inside the mating groove 432 and the rocker 435. A mating insertion rod 437 slidably connected to the sliding hole is fixedly installed on the lower end surface of the upper clamping plate 422.

[0038] During specific operation, when rotating the second screw rod 423 to lower the upper clamping plate 422, the upper clamping plate 422 will drive the mating insertion rod 437 to descend from the sliding hole and contact one end of the rocker 435 located below the sliding hole, causing it to rotate around the shaft rod. The other end of the rocker 435 will push the connecting rod 433 upward through the hinge rod 434, thereby driving the L-shaped fixing plates 431 on both sides to move towards the upper clamping plate 422. After the upper clamping plate 422 completes the clamping of the PVC composite board, the L-shaped fixing plates 431 on both sides will assist in fixing the upper clamping plate 422, and the secondary fixing is used to ensure the stability of the PVC composite board during the test process.

[0039] When it is necessary to release the clamping and fixing of the PVC composite board, rotate the second screw rod 423 in the reverse direction. The pressing of the mating insertion rod 437 on the rocker 435 gradually disappears. The second spring 436 pulls the rocker 435 back, thereby pulling the connecting rod 433 downward through the hinge rod 434 and moving the L-shaped fixing plate 431 away from the upper clamping plate 422, thus releasing the auxiliary fixing of the upper clamping plate 422.

[0040] Please refer to Figure 1 , Figure 2 and Figure 3 , the locking part 44 includes a locking rod 441, a pulling plate 442 and a locking hole 443. The locking rod 441 is slidably installed on the front support seat 412 through insertion holes symmetrically penetrating through the left and right. A pulling plate 442 is fixedly installed at the upper ends of the locking rods 441. A number of locking holes 443 matching the insertion holes are formed on the base 1 in a linear array.

[0041] Please refer to Figure 1 and Figure 6, the moving part 51 includes a second slideway 511, a support slider 512, a third screw 513 and a second motor 514. A second slideway 511 is formed through the support arm 3. A support slider 512 is slidably installed in the second slideway 511. A third screw 513 threadedly connected to the support slider 512 is installed in the second slideway 511 through a bearing. A second motor 514 with an output end fixedly connected to the third screw 513 is fixedly installed on the support arm 3.

[0042] Please refer to Figure 1 and Figure 6 , the extrusion part 52 includes a sliding cylinder 521, a cylinder 522, a mating plate 523 and a third spring 524. A sliding cylinder 521 is slidably installed through the support slider 512. A cylinder 522 is fixedly installed in the sliding cylinder 521. The upper end of the sliding cylinder 521 is arc-shaped. Symmetrically arranged mating plates 523 are fixedly installed at the upper end of the sliding cylinder 521. A third spring 524 is fixedly installed between the mating plate 523 and the support slider 512.

[0043] Please refer to Figure 1 and Figure 6 , the reciprocating part 53 includes a rotating shaft seat 531, a third motor 532 and a cam 533. Symmetrically arranged rotating shaft seats 531 are fixedly installed on the upper end surface of the support slider 512 through the provided support rods. A cam 533 located above the sliding cylinder 521 is rotatably installed between the rotating shaft seats 531. A third motor 532 with an output end fixedly connected to the cam 533 is fixedly installed on one of the rotating shaft seats 531.

[0044] Please refer to Figure 1 , Figure 6 , Figure 7 and Figure 8 , the main body part 61 includes a hinge seat 611, a connection seat 612 and a first contact circular plate 613. A hinge seat 611 is fixedly installed at the telescopic end of the cylinder 522. A connection seat 612 is hinged to the hinge seat 611 through the provided connection shaft. A first contact circular plate 613 is fixedly installed on the lower end surface of the connection seat 612.

[0045] During specific operation, when static detection of the PVC composite board is required, the locking rod 441 is not inserted into the jack of the front support seat 412. At this time, the cylinder 522 can be started to make its telescopic end drive the first contact circular plate 613 to descend and contact the upper end surface of the PVC composite board. At this time, the third motor 532 is in an unstarted state. At this time, the third spring 524 presses the mating plate 523 upward, making the arc-shaped upper end of the sliding cylinder 521 fit with the cam 533, so that the sliding cylinder 521 will not slide in the support slider 512. At this time, the telescopic end of the cylinder 522 can be used to perform a squeeze toughness test on the PVC composite board. During the test, the front support seat 412 slides in the first slideway 411 to provide compensation for the deformation of the PVC composite board.

[0046] After completing the test at this point on the PVC composite board, reverse-start the cylinder 522 to retract the first contact circular plate 613. At the same time, start the second motor 514 to drive the third screw 513 to rotate, so that the support slider 512 drives the extrusion part 52 to move to other positions of the PVC composite board. Similarly, repeat the above operations to conduct extrusion toughness tests on different positions of the PVC composite board to more realistically simulate various stress conditions that the PVC composite board may encounter during actual use.

[0047] When it is necessary to conduct a dynamic impact on the PVC composite board to test its impact toughness, insert the locking rod 441 into the jack of the front support seat 412 through the pulling plate 442, and insert the locking rod 441 into the locking hole 443 on the base 1 to lock the front support seat 412 on the base 1. Then, start the third motor 532 to drive the cam 533 to rotate. During the rotation of the cam 533, the protruding part thereof will press the sliding cylinder 521 downward. The third spring 524 can ensure that the arc part of the sliding cylinder 521 always fits with the cam 533, so as to drive the sliding cylinder 521 to reciprocate up and down in the support slider 512. In this way, the first contact circular plate 613 below the cylinder 522 can be driven by the sliding cylinder 521 to continuously impact the surface of the PVC composite board, so as to test the impact toughness of the PVC composite board under dynamic extrusion.

[0048] Please refer to Figure 1 、 Figure 7 and Figure 8 As shown in, the contact part 62 includes a second contact circular plate 621, a third contact circular plate 622 and a limiting ring 623. The second contact circular plate 621 is threadedly connected to the circumferential wall of the first contact circular plate 613. The third contact circular plate 622 is threadedly connected to the outer circumferential wall of the second contact circular plate 621. A limiting ring 623 is fixedly installed on the first contact circular plate 613 above the second contact circular plate 621. A limiting ring 623 is also fixedly installed on the second contact circular plate 621 above the third contact circular plate 622.

[0049] During specific operation, when it is necessary to change the contact area, rotate the second contact circular plate 621 onto the first contact circular plate 613. After the second contact circular plate 621 is installed, rotate the third contact circular plate 622 onto the second contact circular plate 621 to increase the contact area with the PVC composite board during static and dynamic tests, so as to simulate the state of the PVC composite board being extruded with different contact areas in actual applications. The limiting ring 623 will limit the positions of the third contact circular plate 622 and the second contact circular plate 621 during rotational installation.

[0050] Then, through the cooperation of the extrusion mechanism 5 and the actuator 6, static extrusion tests can be carried out on the PVC composite board under different contact areas, and dynamic impact tests can also be carried out on the PVC composite board under different contact areas to more comprehensively simulate various force conditions that the PVC composite board may encounter in actual applications. During the above-mentioned toughness detection process of the PVC composite board, if the PVC composite board shows damage conditions such as fracture and cracking, it is considered unqualified in the detection, otherwise it is considered qualified.

[0051] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PVC composite board physical property testing device, comprising a base, characterized in that: A vertical slide rail and a support arm located in front of the vertical slide rail and fixedly connected to the vertical slide rail are fixed on the upper end surface of the base, and a clamping mechanism for clamping and fixing the PVC composite board is provided on the vertical slide rail and the base; The clamping mechanism includes a support part for adjusting the detection angle of the PVC composite board, which is arranged on the vertical slide rail and the base, and the support part is provided with a fixing part and a secondary fixing part for cooperating with the fixing part to fix the PVC composite board for a second time, and the support part is also provided with a locking part for locking the support part; The support arm is provided with an extrusion mechanism for performing dynamic impact and static extrusion testing on the PVC composite board; The extrusion mechanism includes a moving part arranged on the support arm, the moving part is provided with an extrusion part for cooperating with the moving part to detect different parts of the PVC composite board, and the moving part is also provided with a reciprocating part for cooperating with the extrusion part to reciprocate and impact the PVC composite board; The extrusion part is provided with an actuator for changing the contact area of ​​the extruded PVC composite board; The actuator includes a main body portion arranged on the extrusion portion, and a contact portion is arranged on the main body portion; The support part includes a first slideway, and the upper end surface of the base is provided with a first slideway located below the support arm. A support seat is slidably installed in the first slideway and at the front end of the vertical slide rail, and a first spring is fixed between the support seat at the front side and the rear end surface of the first slideway; when the angle of the PVC composite board is changed, the support seat at the rear side rises, and the support seat at the front side slides backward in the first slideway to compensate for the deflection distance of the PVC composite board; The locking part includes a locking rod, a pull plate and a locking hole. The locking rod is slidably mounted on the support seat at the front side through a socket symmetrically opened on the left and right sides. The pull plate is fixed to the upper ends of the locking rods. A plurality of locking holes cooperating with the sockets are opened in a linear array on the base. Two symmetrical support frames are provided on one side wall of the support seats on the front and rear sides close to each other. A first screw connected to the support seat on the rear side is installed through a bearing in the vertical slide rail. A first motor with an output end fixedly connected to the first screw is fixed on the vertical slide rail. A clamping base is hinged between the two support frames on the same support seat, and a rubber gasket is provided on the upper end surface of the clamping base. The fixing part includes a fixing block, an upper clamping plate and a second screw rod. The fixing block is fixed on the upper end surface of the clamping base. The upper clamping plate used for clamping the PVC composite board with the clamping base is installed on the fixing block through a sliding groove. The lower end surface of the upper clamping plate is also provided with a rubber gasket. The second screw rod threadedly connected to the upper clamping plate is installed through a bearing in the fixing block. The secondary fixed part includes an L-shaped fixing plate, a matching groove, a connecting rod, a hinged rod, a rocker, a second spring and a matching plug rod. The upper end surface of the clamping base is hinged with a left-right symmetrical L-shaped fixing plate, and a connecting rod is commonly fixed on the left-right symmetrical L-shaped fixing plates. The clamping base is provided with a matching groove located below the fixing block, and the clamping base is provided with a sliding hole that penetrates its upper end surface and is connected to the matching groove. A rocker with one end located below the sliding hole is hinged in the matching groove by an axial rod, and the other end of the rocker is hinged with a hinged rod hinged to the connecting rod. A second spring is fixed between the upper side wall inside the matching groove and the rocker, and a matching plug rod slidably connected to the sliding hole is fixed to the lower end surface of the upper clamping plate.

2. A PVC composite board physical property testing device according to claim 1, characterized in that: The moving part includes a second slide, a supporting slider, a third screw and a second motor. The supporting arm is penetrated by a second slide, the supporting slider is slidably installed in the second slide, a third screw threadedly connected to the supporting slider is installed in the second slide through a bearing, and a second motor with an output end fixedly connected to the third screw is fixed on the supporting arm.

3. A PVC composite board physical property testing device according to claim 2, characterized in that: The extrusion part includes a slide, a cylinder, a matching plate and a third spring. The slide is installed in the support slider and slides through it. The cylinder is fixed in the slide. The upper end of the slide is arc-shaped. A left-right symmetrical matching plate is fixed to the upper end of the slide. The third spring is fixed between the matching plate and the support slider.

4. A PVC composite board physical property testing device according to claim 3, characterized in that: The reciprocating part includes a rotating shaft seat, a third motor and a cam. The upper end surface of the supporting sliding block is fixed with a left-right symmetrical rotating shaft seat through a supporting rod. A cam located above the slide cylinder is rotatably installed between the rotating shaft seats. A third motor with an output end fixedly connected to the cam is fixedly installed on one of the rotating shaft seats.

5. A PVC composite board physical property testing device according to claim 3, characterized in that: The main body comprises an articulated seat, a connecting seat and a first contact circular plate. The telescopic end of the cylinder is fixed with the articulated seat, the articulated seat is hinged with the connecting seat via a connecting shaft, and the first contact circular plate is fixed to the lower end surface of the connecting seat.

6. A PVC composite board physical property testing device according to claim 5, characterized in that: The contact portion includes a second contact circular plate, a third contact circular plate and a limiting ring. The second contact circular plate is threadedly connected to the ring wall of the first contact circular plate, the third contact circular plate is threadedly connected to the outer ring wall of the second contact circular plate, a limiting ring located above the second contact circular plate is fixed on the first contact circular plate, and a limiting ring located above the third contact circular plate is also fixed on the second contact circular plate.

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