Anti-cracking testing device for rubber and plastic materials

Abstract

The invention discloses a rubber and plastic material anti-cracking testing device, and relates to the technical field of rubber and plastic material testing, the rubber and plastic material anti-cracking testing device comprises a frame, a high temperature resistant box is fixedly mounted at the inner bottom end of the frame, a sealing cover is fixedly mounted at the upper end of the high temperature resistant box, and a winding mechanism is arranged at the upper end of the frame. The phenomenon that the winding force, angle and speed are different each time can be prevented, it is guaranteed that the tightness of rubber and plastic materials wound each time is the same, the rubber and plastic materials can be better tested conveniently, influences on the accuracy and comparability of test results are prevented, meanwhile, winding work can be rapidly and continuously carried out, and the working efficiency is improved. Compared with the prior art, more test samples can be processed within the same time, time and manpower are reduced, the testing efficiency of the rubber and plastic materials is greatly improved, the possibility is provided for large-scale testing and deep research through the efficient winding mode, and more rules and characteristics related to the performance of the rubber and plastic materials can be found easily.

Description

Technical Field

[0001] The invention relates to the technical field of rubber and plastic material testing, in particular to a rubber and plastic material anti-cracking testing device. Background Art

[0002] Rubber and plastics are the general names for the rubber and plastic industries. They are both byproducts of petroleum. They have the same source, but in the process of making products, their physical properties are different, and their uses are even more different. Rubber is widely used in tires, and plastics are becoming more and more widely used with the needs of technology and the market, and they are already inseparable in daily life. Before the crack resistance test, the rubber and plastic materials need to be wound on the shaft, and then put into the aging box, the temperature is adjusted to the appropriate degree, and after a period of time, observe whether there are cracks on the surface. At present, the winding of rubber and plastic materials is all done manually, and the rubber and plastic materials are directly wound on the rotating shaft manually.

[0003] For example, a rubber and plastic material crack resistance testing device with publication number CN103076240B includes a frame, at least one rotating shaft rotatably connected to the frame and used to wind the strip-shaped rubber and plastic material, at least one locking portion sleeved on the rotating shaft to fix the rubber and plastic material on the rotating shaft, and a weight fixed to the lower end of the rubber and plastic material during winding to keep the rubber and plastic material in a tensioned state. The rotating shaft is arranged to be inclined with respect to the horizontal plane.

[0004] However, in the prior art, due to the differences in manual winding of rubber and plastic materials, the strength, angle and speed of winding will be different each time the winding is performed, resulting in different tightness of the rubber and plastic materials after winding, thereby affecting the accuracy and comparability of the test results. In addition, manual winding requires a lot of time and manpower, especially when a large number of test samples are required, which will seriously affect the test progress. Therefore, a rubber and plastic material anti-cracking test device is proposed. Summary of the invention

[0005] The object of the present invention is to provide a rubber and plastic material anti-cracking testing device to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a rubber and plastic material crack resistance testing device, comprising a frame, a high temperature resistant box is fixedly installed at the bottom end of the frame, a sealing cover is fixedly installed at the upper end of the high temperature resistant box, a winding mechanism is arranged at the upper end of the frame, a smoothing mechanism is arranged at the upper end of the frame, a first fixing mechanism is arranged at one end of the winding mechanism, and a second fixing mechanism is arranged inside the sealing cover; The winding mechanism includes a variable speed motor, bearing seats are fixedly installed at the upper end of the frame and at the edge positions of both sides, a transmission rod is fixedly installed at the output end of the variable speed motor, a large sprocket is provided on one side of the frame, an axle rod is rotatably installed between the two groups of bearing seats, a small sprocket No. 1 is fixedly installed on the outer wall of the axle rod, the outer walls of the large sprocket and the small sprocket No. 1 are transmission-connected to a large transmission chain No. 1, one end of the transmission rod passes through one end of the high temperature resistant box and is fixed to one end of the large sprocket, and the lower end of the variable speed motor is fixed to the inner bottom end of the high temperature resistant box; The smoothing mechanism includes two groups of special-shaped shaft seats, a screw is rotatably installed in the middle of the two groups of special-shaped shaft seats, a transmission sprocket is fixedly installed on the outer wall of the screw, a second small sprocket is fixedly installed on the outer wall of the shaft rod, the outer walls of the transmission sprocket and the second small sprocket are transmission-connected with a small transmission chain, the outer wall of the screw is threadedly connected with a threaded seat, a guide rod is fixedly installed in the middle of the two groups of special-shaped shaft seats, an arc-shaped smoothing plate is provided on the outer wall of the shaft rod, a circular ring seat is slidably installed on the outer wall of the guide rod, a circular groove is opened on one side of the threaded seat, and a support spring is fixedly installed on the inner side wall of the circular groove.

[0007] Preferably, the No. 1 fixing mechanism comprises an arc-shaped pressure plate, an L-shaped seat is fixedly mounted on the outer wall of the shaft rod, an elliptical hole is penetrated through the upper surface of the shaft rod, and a threaded rod is threadedly connected to the upper end of the L-shaped seat.

[0008] Preferably, the second fixing mechanism includes a mounting frame plate and a base frame seat, a servo motor is fixedly installed on the lower end of the mounting frame plate, a rotating rod is rotatably installed on the upper end of the base frame seat, a connecting block is fixedly installed on the outer wall of the rotating rod, the upper end of the connecting block and near the edge positions on both sides are rotatably connected with connecting heads, the lower ends of the two groups of connecting heads are rotatably connected with movable plates, the upper ends of the two groups of movable plates are fixedly installed with push plates, one end of the two groups of push plates are fixedly installed with clamping plates, the upper end of the base frame seat and near the four corners are fixedly installed with slide rails, and the outer walls of the four groups of slide rails are slidably installed with slide seats.

[0009] Preferably, both ends of the threaded seat are fixedly installed with limiting recesses, the interiors of the two groups of limiting recesses are slidably installed with limiting plates, and the other side of the arc-shaped smoothing plate is fixedly installed with a limiting rod.

[0010] Preferably, the lower ends of the two groups of special-shaped shaft seats are fixed to the upper end of the frame, the outer wall of the annular seat is fixed to the lower end of the threaded seat, the other end of the support spring is fixed to the other side of the arc-shaped smoothing plate, one end of the two groups of limit plates are fixed to the other side of the arc-shaped smoothing plate, and one end of the limit rod is inserted into the inside of the circular groove.

[0011] Preferably, a straight hole is formed through the upper end of the L-shaped seat, and a vertical rod is slidably installed inside the straight hole.

[0012] Preferably, the four protrusions of the mounting frame plate are all fixed to the lower end of the sealing cover, and the lower end of the base frame seat is fixed to the upper end of the sealing cover.

[0013] Preferably, the lower end of the threaded rod is rotatably mounted inside the arc-shaped pressing plate, the lower end of the vertical rod is fixed to the upper surface of the arc-shaped pressing plate, and the arc-shaped pressing plate is located directly above the elliptical hole.

[0014] Preferably, the lower end of the rotating rod passes through the base frame and one end of the mounting frame plate, and is fixed to the output end of the servo motor, and the servo motor is arranged inside the high temperature resistant box.

[0015] Preferably, a moving mechanism is fixedly mounted on the lower end of the frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing a winding mechanism, the rubber and plastic material can be wound on the outer wall of the reel, thereby preventing the phenomenon that the force, angle and speed of each winding are different, ensuring that the tightness of the rubber and plastic material wound each time is the same, facilitating and better testing of the rubber and plastic material, and preventing the accuracy and comparability of the test results from being affected. At the same time, the winding work can be performed quickly and continuously, and more test samples can be processed in the same time, which not only reduces time and manpower, but also greatly improves the testing efficiency of the rubber and plastic material. In addition, the efficient winding method makes it possible to conduct large-scale testing and in-depth research, which helps to discover more laws and characteristics about the performance of rubber and plastic materials.

[0017] 2. In the present invention, by providing a smoothing mechanism, the arc-shaped smoothing plate can be driven to move rightward on the surface of the rubber-plastic material, so that it can move synchronously with the wound rubber-plastic material, which is convenient for limiting the rubber-plastic material during the winding process, and can ensure the relaxation of the rubber-plastic material after winding in real time to keep it uniform, thereby preventing the impact on the anti-cracking test of the rubber-plastic material, reducing the use of the power system, and reducing the economic expenditure of the factory. Secondly, it can prevent the support spring from being deformed when the arc-shaped smoothing plate moves, thereby ensuring the normal use of the support spring.

[0018] 3. In the present invention, by providing a fixing mechanism No. 1, the rubber and plastic material can be fixed inside the elliptical hole, so that a part of the rubber and plastic material can be fixed to prevent the rubber and plastic material from being separated from the outer wall of the reel during the winding process, thereby ensuring the uniformity of the experiment and the scientific results.

[0019] 4. In the present invention, by providing a second fixing mechanism, the middle rubber-plastic material can be clamped, so that the other end of the rubber-plastic material can be fixed, preventing the rubber-plastic material from being unable to be stretched, and will not affect the anti-cracking test of the rubber-plastic material, and ensure the uniformity of the experiment and the scientific results. Secondly, the setting of the mounting frame can fix the servo motor and increase the stability of the servo motor during operation.

[0020] 5. In the present invention, with the cooperation of the high temperature resistant box and the sealing cover, the variable speed motor and the servo motor can be protected to prevent damage to the variable speed motor and the servo motor when the rubber and plastic materials are tested inside the aging box, thereby increasing the service life of the variable speed motor and the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of a rubber and plastic material anti-cracking testing device of the present invention; Figure 2 It is a structural schematic diagram of a winding mechanism, a smoothing mechanism and a No. 1 fixing mechanism in a rubber and plastic material anti-cracking testing device of the present invention; Figure 3 It is a structural schematic diagram of a winding mechanism and a No. 1 fixing mechanism in a rubber and plastic material crack resistance testing device of the present invention; Figure 4 It is a structural schematic diagram of a smoothing mechanism in a rubber and plastic material anti-cracking testing device of the present invention; Figure 5 It is a schematic diagram of a partially exploded structure of a smoothing mechanism in a rubber and plastic material anti-cracking testing device of the present invention; Figure 6 It is a structural schematic diagram of a No. 1 fixing mechanism in a rubber and plastic material anti-cracking testing device of the present invention; Figure 7 It is a structural schematic diagram of a second fixing mechanism in a rubber and plastic material anti-cracking testing device of the present invention; Figure 8 It is a partial top view of a rubber and plastic material anti-cracking testing device of the present invention; Fig. 9 It is a schematic diagram of the half-section structure of a high-temperature resistant box sealing cover in a rubber and plastic material anti-cracking testing device of the present invention.

[0022] In the figure: 1, frame; 11, moving mechanism; 12, high temperature resistant box; 13, sealing cover; 2, winding mechanism; 21, variable speed motor; 22, bearing seat; 23, transmission rod; 24, large chain wheel; 25, shaft rod; 26, No. 1 small chain wheel; 27, large transmission chain; 3, smoothing mechanism; 31, special-shaped shaft seat; 32, screw rod; 33, transmission chain wheel; 34, No. 2 small chain wheel; 35, small transmission chain; 36, threaded seat; 37, guide rod; 38, arc-shaped smoothing plate; 39, circular ring seat; 310 , limiting recess; 311, limiting plate; 312, circular groove; 313, supporting spring; 314, limiting rod; 4, fixing mechanism No. 1; 41, L-shaped seat; 42, arc pressure plate; 43, elliptical hole; 44, threaded rod; 45, vertical rod; 46, straight hole; 5, fixing mechanism No. 2; 51, mounting plate; 52, base frame; 53, servo motor; 54, rotating rod; 55, connecting block; 56, connecting head; 57, movable plate; 58, push plate; 59, clamping plate; 510, slide rail; 511, slide seat. DETAILED DESCRIPTION

[0023] 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 implementation regulations described 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.

[0024] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown: a rubber and plastic material crack resistance testing device, comprising a frame 1, a high temperature resistant box 12 is fixedly installed at the bottom of the frame 1, a sealing cover 13 is fixedly installed at the upper end of the high temperature resistant box 12, a winding mechanism 2 is arranged at the upper end of the frame 1, a smoothing mechanism 3 is arranged at the upper end of the frame 1, a first fixing mechanism 4 is arranged at one end of the winding mechanism 2, and a second fixing mechanism 5 is arranged inside the sealing cover 13; The winding mechanism 2 includes a variable speed motor 21, a bearing seat 22 is fixedly installed at the upper end of the frame 1 and at the edge positions on both sides, a transmission rod 23 is fixedly installed at the output end of the variable speed motor 21, a large sprocket 24 is arranged on one side of the frame 1, a shaft 25 is rotatably installed in the middle of the two sets of bearing seats 22, a small sprocket 26 is fixedly installed on the outer wall of the shaft 25, and a large transmission chain 27 is connected to the outer walls of the large sprocket 24 and the small sprocket 26, one end of the transmission rod 23 passes through one end of the high temperature resistant box 12 and is fixed to one end of the large sprocket 24, and the lower end of the variable speed motor 21 is fixed to the inner bottom end of the high temperature resistant box 12; The smoothing mechanism 3 includes two groups of special-shaped shaft seats 31, a screw rod 32 is rotatably installed in the middle of the two groups of special-shaped shaft seats 31, a transmission chain wheel 33 is fixedly installed on the outer wall of the screw rod 32, a second small chain wheel 34 is fixedly installed on the outer wall of the shaft rod 25, a small transmission chain 35 is transmission-connected to the outer walls of the transmission chain wheel 33 and the second small chain wheel 34, a threaded seat 36 is threadedly connected to the outer wall of the screw rod 32, a guide rod 37 is fixedly installed in the middle of the two groups of special-shaped shaft seats 31, an arc-shaped smoothing plate 38 is provided on the outer wall of the shaft rod 25, a circular ring seat 39 is slidably installed on the outer wall of the guide rod 37, and both ends of the threaded seat 36 are fixedly installed with limited recesses 310 A limiting plate 311 is slidably installed inside the two groups of limiting recesses 310, a circular groove 312 is opened on one side of the threaded seat 36, a supporting spring 313 is fixedly installed on the inner side wall of the circular groove 312, and a limiting rod 314 is fixedly installed on the other side of the arc-shaped smoothing plate 38, the lower ends of the two groups of special-shaped shaft seats 31 are fixed to the upper end of the frame 1, the outer wall of the annular seat 39 is fixed to the lower end of the threaded seat 36, the other end of the supporting spring 313 is fixed to the other side of the arc-shaped smoothing plate 38, one end of the two groups of limiting plates 311 are fixed to the other side of the arc-shaped smoothing plate 38, and one end of the limiting rod 314 is inserted into the inside of the circular groove 312.

[0025] In this embodiment, the variable speed motor 21 is started, and the output end of the variable speed motor 21 drives the transmission rod 23 to rotate, and the transmission rod 23 drives the large chain wheel 24 to rotate, and the large chain wheel 24 drives the first small chain wheel 26 to rotate through the large transmission chain 27, and the first small chain wheel 26 drives the shaft rod 25 to rotate inside the two sets of bearing seats 22, so that the rubber and plastic material can be wound on the outer wall of the shaft rod 25, so as to prevent the phenomenon that the force, angle and speed of each winding are different, and ensure that the tightness of the rubber and plastic material wound each time is the same, so as to facilitate and better test the rubber and plastic material, and prevent the accuracy and comparability of the test results from being affected. At the same time, the winding work can be carried out quickly and continuously, and more test samples can be processed in the same time, which not only reduces time and manpower, but also greatly improves the testing efficiency of the rubber and plastic material, and the efficient winding method provides the possibility for large-scale testing and in-depth research, which is helpful to discover more laws and characteristics about the performance of rubber and plastic materials; Under the elastic force of the support spring 313, the support spring 313 will push the arc-shaped caressing plate 38 to move, and the other side of the arc-shaped caressing plate 38 will stick to the surface of the rubber-plastic material and press it tightly, so as to limit the rubber-plastic material and prevent the rubber-plastic material from feeling loose on the shaft 25, thereby preventing the impact on the anti-cracking test of the rubber-plastic material; When the shaft 25 rotates, the shaft 25 also drives the second small sprocket wheel 34 to rotate. The second small sprocket wheel 34 drives the transmission sprocket wheel 33 to rotate through the small transmission chain 35. The transmission sprocket wheel 33 drives the screw 32 to rotate inside the two sets of special-shaped shaft seats 31. Due to the cooperation between the guide rod 37 and the annular seat 39, the threaded seat 36 can be limited so that the threaded seat 36 can only move left and right on the outer wall of the screw 32. Therefore, the threaded seat 36 drives the annular seat 39 to slide on the outer wall of the guide rod 37, and the threaded seat 36 is on the screw 32. The threaded seat 36 rotates to the left on the outer wall, and at the same time, the threaded seat 36 drives the arc-shaped caressing plate 38 to move through the cooperation of the two groups of limiting recesses 310 and the two groups of limiting plates 311, so that the arc-shaped caressing plate 38 moves to the right on the surface of the rubber and plastic material, so that it can move synchronously with the wound rubber and plastic material, which is convenient for limiting the position of the rubber and plastic material during the winding process, and can ensure the relaxation of the rubber and plastic material after winding in real time, so that it can maintain uniformity, prevent the impact on the anti-cracking test of the rubber and plastic material, and at the same time reduce the use of the power system and reduce the economic expenses of the factory; When the arc-shaped caressing plate 38 is pushed to move, the arc-shaped caressing plate 38 drives the limiting rod 314 to move, so that the limiting rod 314 moves inside the supporting spring 313, thereby limiting the supporting spring 313, thereby preventing the supporting spring 313 from deforming when the arc-shaped caressing plate 38 moves, thereby ensuring the normal use of the supporting spring 313; The movement of the arc-shaped smoothing plate 38 will also drive the two groups of limit plates 311 to move, so that the two groups of limit plates 311 slide inside the two groups of limit recesses 310 respectively. Under the limitation of the two groups of limit recesses 310, the two groups of limit plates 311 can be guided, and at the same time, the arc-shaped smoothing plate 38 can be prevented from tilting, thereby preventing the arc-shaped smoothing plate 38 from limiting the rubber and plastic material.

[0026] Embodiment 2: According to Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 8 and Fig. 9As shown, the fixing mechanism No. 1 4 includes an arc-shaped pressure plate 42, an L-shaped seat 41 is fixedly installed on the outer wall of the shaft rod 25, an elliptical hole 43 is penetrated through the upper surface of the shaft rod 25, a threaded rod 44 is threadedly connected through the upper end of the L-shaped seat 41, a straight hole 46 is penetrated through the upper end of the L-shaped seat 41, a vertical rod 45 is slidably installed inside the straight hole 46, the lower end of the threaded rod 44 is rotatably installed inside the arc-shaped pressure plate 42, the lower end of the vertical rod 45 is fixed to the upper surface of the arc-shaped pressure plate 42, and the arc-shaped pressure plate 42 is located directly above the elliptical hole 43.

[0027] In this embodiment, by inserting one end of the rubber-plastic material into the inside of the elliptical hole 43, and winding it half a circle on the outer wall of the shaft rod 25, and then twisting the threaded rod 44, the threaded rod 44 rotates on the internal thread of the L-shaped seat 41, and the lower end of the threaded rod 44 rotates inside the arc-shaped pressing plate 42. Due to the cooperation of the vertical rod 45 and the straight hole 46, the arc-shaped pressing plate 42 is limited, and the threaded rod 44 moves downward inside the L-shaped seat 41, and the threaded rod 44 pushes the arc-shaped pressing plate 42 to move downward, and compresses the rubber-plastic material wound on the outer wall of the shaft rod 25, and then the rubber-plastic material can be fixed inside the elliptical hole 43, so that a part of the rubber-plastic material can be fixed, and the rubber-plastic material is prevented from being separated from the outer wall of the shaft rod 25 during the winding process, which can ensure the unity of the experiment and the scientific results. When the arc pressure plate 42 moves downward, the arc pressure plate 42 will drive the vertical rod 45 to move downward together, and the vertical rod 45 will slide downward inside the straight hole 46, which not only limits the arc pressure plate 42 but also increases the stability of the arc pressure plate 42 when moving.

[0028] Embodiment 3: According to Figure 1 , Figure 7 and Fig. 9 As shown, the second fixing mechanism 5 includes a mounting frame plate 51 and a bottom frame seat 52, a servo motor 53 is fixedly mounted on the lower end of the mounting frame plate 51, a rotating rod 54 is rotatably mounted on the upper end of the bottom frame seat 52, a connecting block 55 is fixedly mounted on the outer wall of the rotating rod 54, a connecting head 56 is rotatably connected to the upper end of the connecting block 55 and near the edge positions on both sides, the lower ends of the two groups of connecting heads 56 are rotatably connected to movable plates 57, the upper ends of the two groups of movable plates 57 are fixedly mounted with push plates 58, and one end of the two groups of push plates 58 is A clamping plate 59 is fixedly installed, and slide rails 510 are fixedly installed on the upper end of the base frame seat 52 and near the four corners. Slide seats 511 are slidably installed on the outer walls of the four groups of slide rails 510. The four protrusions of the mounting frame plate 51 are fixed to the lower end of the sealing cover 13, and the lower end of the base frame seat 52 is fixed to the upper end of the sealing cover 13. The lower end of the rotating rod 54 passes through the base frame seat 52 and one end of the mounting frame plate 51, and is fixed to the output end of the servo motor 53. The servo motor 53 is arranged inside the high temperature resistant box 12.

[0029] In this embodiment, the other end of the rubber-plastic material is placed between the two groups of clamping plates 59, and the servo motor 53 is started. The output end of the servo motor 53 drives the rotating rod 54 to rotate inside the bottom frame 52, and the rotating rod 54 drives the connecting block 55 to move. The connecting block 55 drives the two groups of connecting heads 56 to move, and the two groups of connecting heads 56 respectively drive the two groups of slide seats 511 to move together. The four groups of slide seats 511 slide on the outer walls of the four groups of slide rails 510 respectively, which can increase the stability of the two groups of connecting heads 56 when moving, and drive the two groups of connecting heads 56 The two sets of connecting heads 56 move in relative directions, and the other ends of the two sets of clamping plates 59 move in relative directions together through the two sets of movable plates 57, so as to clamp the rubber and plastic material in the middle, so as to fix the other end of the rubber and plastic material, prevent the rubber and plastic material from being unable to be stretched, and will not affect the anti-cracking test of the rubber and plastic material, and ensure the unity of the experiment and the scientific results. Secondly, the setting of the mounting frame 51 can fix the servo motor 53 and increase the stability of the servo motor 53 during operation.

[0030] Embodiment 4: According to Figure 1 , Figure 8 and Fig. 9 As shown, a moving mechanism 11 is fixedly installed at the lower end of the frame 1 , a high temperature resistant box 12 is fixedly installed at the inner bottom end of the frame 1 , and a sealing cover 13 is fixedly installed at the upper end of the high temperature resistant box 12 .

[0031] In this embodiment, the setting of the moving mechanism 11 can drive the frame 1 to move, so as to facilitate driving the entire device into the interior of the aging box. With the cooperation of the high temperature resistant box 12 and the sealing cover 13, the variable speed motor 21 and the servo motor 53 can be protected to prevent damage to the variable speed motor 21 and the servo motor 53 when the rubber and plastic materials are tested inside the aging box, thereby increasing the service life of the variable speed motor 21 and the servo motor 53.

[0032] The method of using and working principle of the device are as follows: first, pick up one end of the rubber-plastic material and insert it into the inside of the elliptical hole 43, then wrap the rubber-plastic material around the outer wall of the shaft 25 for half a circle, and twist the threaded rod 44, the threaded rod 44 rotates on the internal thread of the L-shaped seat 41, and the lower end of the threaded rod 44 rotates inside the arc-shaped pressing plate 42, and the arc-shaped pressing plate 42 is limited due to the cooperation of the vertical rod 45 and the straight hole 46, and the threaded rod 44 moves downward inside the L-shaped seat 41, and the threaded rod 44 pushes the arc-shaped pressing plate 42 to move downward, and compresses the rubber-plastic material wrapped around the outer wall of the shaft 25, and then the rubber-plastic material can be fixed inside the elliptical hole 43, and a part of the rubber-plastic material can be fixed; Then, the other end of the rubber-plastic material is placed in the middle of the two groups of clamping plates 59, and the servo motor 53 is started. The output end of the servo motor 53 drives the rotating rod 54 to rotate inside the bottom frame seat 52, and the rotating rod 54 drives the connecting block 55 to move. The connecting block 55 drives the two groups of connecting heads 56 to move. The two groups of connecting heads 56 respectively drive the two groups of slide seats 511 to move together. The four groups of slide seats 511 slide on the outer walls of the four groups of slide rails 510 respectively, which can increase the stability of the two groups of connecting heads 56 when moving, and drive the two groups of connecting heads 56 to move in relative directions. The other ends of the two groups of connecting heads 56 move through the two groups of movable plates 57 to drive the two groups of clamping plates 59 to move in relative directions together, thereby clamping the rubber-plastic material in the middle and fixing the other end of the rubber-plastic material. Afterwards, under the elastic force of the support spring 313, the support spring 313 will push the arc-shaped smoothing plate 38 to move, and the other side of the arc-shaped smoothing plate 38 will stick to the surface of the rubber-plastic material and press it, so as to limit the rubber-plastic material and prevent the rubber-plastic material from being loose on the shaft 25. Then, the variable speed motor 21 is started, and the output end of the variable speed motor 21 drives the transmission rod 23 to rotate, and the transmission rod 23 drives the large chain wheel 24 to rotate. The large chain wheel 24 drives the first small chain wheel 26 to rotate through the large transmission chain 27, and the first small chain wheel 26 drives the shaft 25 to rotate inside the two sets of bearing seats 22, so that the rubber-plastic material can be wrapped around the outer wall of the shaft 25. Finally, when the shaft 25 rotates, the shaft 25 will also drive the second small sprocket wheel 34 to rotate, and the second small sprocket wheel 34 drives the transmission sprocket wheel 33 to rotate through the small transmission chain 35, and the transmission sprocket wheel 33 drives the screw rod 32 to rotate inside the two sets of special-shaped shaft seats 31. Due to the cooperation between the guide rod 37 and the circular ring seat 39, the threaded seat 36 can be limited so that the threaded seat 36 can only move left and right on the outer wall of the screw rod 32. Therefore, the threaded seat 36 drives the circular ring seat 39 to slide on the outer wall of the guide rod 37, and the threaded seat 36 rotates to the left on the outer wall of the screw rod 32. At the same time, the threaded seat 36 drives the arc-shaped caressing plate 38 to move through the cooperation of the two sets of limiting recesses 310 and the two sets of limiting plates 311, so that the arc-shaped caressing plate 38 is on the surface of the rubber and plastic material. The arc-shaped smoothing plate 38 moves to the right and can synchronously move with the wound rubber and plastic material, and can ensure the slackness of the rubber and plastic material after winding in real time to keep it uniform. The arc-shaped smoothing plate 38 will also drive the two groups of limit plates 311 to move, so that the two groups of limit plates 311 slide inside the two groups of limit recesses 310 respectively. Under the limitation of the two groups of limit recesses 310, the two groups of limit plates 311 can be guided, and then the frame 1 is pushed. The frame 1 drives the moving mechanism 11 to move on the ground, which is convenient for the moving mechanism 11 to drive the entire device to move and completely enter the interior of the aging box (because the aging box is not the focus of the present invention, it is not shown in the figure and is not described here). The anti-cracking test of the rubber and plastic material in the device is carried out in the running aging box.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rubber and plastic material crack resistance testing device, comprising a frame (1), characterized in that: A high temperature resistant box (12) is fixedly mounted on the bottom of the interior of the frame (1), a sealing cover (13) is fixedly mounted on the upper end of the high temperature resistant box (12), a winding mechanism (2) is arranged on the upper end of the frame (1), a smoothing mechanism (3) is arranged on the upper end of the frame (1), a first fixing mechanism (4) is arranged at one end of the winding mechanism (2), and a second fixing mechanism (5) is arranged inside the sealing cover (13); The winding mechanism (2) comprises a variable speed motor (21), bearing seats (22) are fixedly mounted at the upper end of the frame (1) and at the edge positions on both sides, a transmission rod (23) is fixedly mounted at the output end of the variable speed motor (21), a large chain wheel (24) is arranged on one side of the frame (1), a shaft rod (25) is rotatably mounted between the two groups of bearing seats (22), a number one small chain wheel (26) is fixedly mounted on the outer wall of the shaft rod (25), the outer walls of the large chain wheel (24) and the number one small chain wheel (26) are transmission-connected to a number one large transmission chain (27), one end of the transmission rod (23) passes through one end of the high temperature resistant box (12) and is fixed to one end of the large chain wheel (24), and the lower end of the variable speed motor (21) is fixed to the inner bottom end of the high temperature resistant box (12); The smoothing mechanism (3) comprises two groups of special-shaped shaft seats (31), a screw rod (32) is rotatably mounted in the middle of the two groups of special-shaped shaft seats (31), a transmission chain wheel (33) is fixedly mounted on the outer wall of the screw rod (32), a second small chain wheel (34) is fixedly mounted on the outer wall of the shaft rod (25), a small transmission chain (35) is transmission-connected to the outer walls of the transmission chain wheel (33) and the second small chain wheel (34), a threaded seat (36) is threadedly connected to the outer wall of the screw rod (32), a guide rod (37) is fixedly mounted in the middle of the two groups of special-shaped shaft seats (31), an arc-shaped smoothing plate (38) is provided on the outer wall of the shaft rod (25), a circular ring seat (39) is slidably mounted on the outer wall of the guide rod (37), a circular groove (312) is opened on one side of the threaded seat (36), and a support spring (313) is fixedly mounted on the inner side wall of the circular groove (312).

2. A rubber and plastic material anti-cracking testing device according to claim 1, characterized in that: The first fixing mechanism (4) comprises an arc-shaped pressing plate (42), an L-shaped seat (41) is fixedly mounted on the outer wall of the shaft rod (25), an elliptical hole (43) is penetrated through the upper surface of the shaft rod (25), and a threaded rod (44) is threadedly connected to the upper end of the L-shaped seat (41).

3. A rubber and plastic material anti-cracking testing device according to claim 1, characterized in that: The second fixing mechanism (5) comprises a mounting frame plate (51) and a base frame seat (52), a servo motor (53) being fixedly mounted on the lower end of the mounting frame plate (51), a rotating rod (54) being rotatably mounted on the upper end of the base frame seat (52), a connecting block (55) being fixedly mounted on the outer wall of the rotating rod (54), a connecting head (56) being rotatably connected to the upper end of the connecting block (55) and near the edge positions on both sides, a movable plate (57) being rotatably connected to the lower ends of two groups of the connecting heads (56), a push plate (58) being fixedly mounted on the upper ends of the two groups of the movable plates (57), a clamping plate (59) being fixedly mounted on one end of the two groups of the push plates (58), a slide rail (510) being fixedly mounted on the upper end of the base frame seat (52) and near the four corners, and a slide seat (511) being slidably mounted on the outer walls of the four groups of the slide rails (510).

4. A rubber and plastic material anti-cracking testing device according to claim 1, characterized in that: Limiting recesses (310) are fixedly mounted on both ends of the threaded seat (36), limiting plates (311) are slidably mounted inside the two groups of limiting recesses (310), and a limiting rod (314) is fixedly mounted on the other side of the arc-shaped smoothing plate (38).

5. A rubber and plastic material anti-cracking testing device according to claim 4, characterized in that: The lower ends of the two groups of special-shaped shaft seats (31) are fixed to the upper end of the frame (1), the outer wall of the annular seat (39) is fixed to the lower end of the threaded seat (36), the other end of the support spring (313) is fixed to the other side of the arc-shaped smoothing plate (38), one end of the two groups of limiting plates (311) is fixed to the other side of the arc-shaped smoothing plate (38), and one end of the limiting rod (314) is inserted into the interior of the circular groove (312).

6. A rubber and plastic material anti-cracking testing device according to claim 2, characterized in that: A straight hole (46) is formed through the upper end of the L-shaped seat (41), and a vertical rod (45) is slidably mounted inside the straight hole (46).

7. The device for testing the crack resistance of rubber and plastic materials according to claim 3, characterized in that: The four protrusions of the mounting frame plate (51) are all fixed to the lower end of the sealing cover (13), and the lower end of the base frame seat (52) is fixed to the upper end of the sealing cover (13).

8. The device for testing the crack resistance of rubber and plastic materials according to claim 6, characterized in that: The lower end of the threaded rod (44) is rotatably mounted inside the arc-shaped pressing plate (42), the lower end of the vertical rod (45) is fixed to the upper surface of the arc-shaped pressing plate (42), and the arc-shaped pressing plate (42) is located directly above the elliptical hole (43).

9. The rubber and plastic material crack resistance testing device according to claim 7, characterized in that: The lower end of the rotating rod (54) passes through the base frame (52) and one end of the mounting frame plate (51), and is fixed to the output end of the servo motor (53), and the servo motor (53) is arranged inside the high temperature resistant box (12).

10. The rubber and plastic material crack resistance testing device according to claim 8, characterized in that: A moving mechanism (11) is fixedly mounted on the lower end of the frame (1).

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