Tensile elasticity detection device for rubber product

Abstract

The invention relates to the technical field of rubber product detection, in particular to a rubber product tensile elasticity detection device which comprises a machine table, a hydraulic driving system is installed on the top of the inner side of the machine table, a top beam is fixedly connected to the bottom of the hydraulic driving system, and a tension sensor is fixedly connected to the bottom of the top beam. The bottom of the tension sensor and the bottom of the inner side of the machine table are each fixedly connected with two clamping piece parts, the rear side of the machine table is fixedly connected with an electronic extensometer, and the front side of a clamping arm of the electronic extensometer is fixedly connected with an outer clamping assembly. According to the tensile elasticity detection device for the rubber product, through the adjustable inclined frame and the screw rod, clamping breakage or loosening of a sheet material can be avoided, a thick part can be reinforced through a puncture cone of an auxiliary part, it is ensured that various samples are stably fixed, and direct detection can be conducted without cutting the samples into standard samples.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rubber product detection, in particular to a tensile elasticity detection device for rubber products. BACKGROUND

[0002] It is well known that the tensile elasticity detection of rubber products is a core means for evaluating their mechanical properties, which is directly related to product use reliability and application scenarios, and needs to follow standardized processes and combine equipment, samples, environmental control and data interpretation to ensure accurate and comparable results. According to product characteristics, select tensile strength, elongation at break, modulus, elastic recovery rate and permanent deformation, each index corresponds to different use requirements, set appropriate tensile rate after clamping by clamp, common problems in detection include sample slipping or clamping off.

[0003] The existing rubber products are usually sampled from the product working area when performing tensile detection, and tend to select dumbbell-shaped samples and accurately measure the size, but this method is mostly used to detect the tensile strength of the material itself. In order to ensure the tensile strength of the finished product, the corresponding length is usually cut off for tensile detection, but for different situations, the conventional clamp can only be replaced by a clamp with a rubber pad and adjusted by adjusting the pressure. It is difficult to adapt to the detection of, for example, rubber film, and the clamping force is too large, which may cause the sample to break at the clamping position during the tensile process. At the same time, when testing irregular-shaped rubber strips with twisted surfaces, the conventional extensometer is difficult to adapt to the irregular-shaped finished product test material outside because the detection arm contact points are located at the same side position at different vertical heights, and it is not convenient to use.

[0004] Based on the above-mentioned problems, we found that the existing technology of rubber product tensile test operation is difficult to avoid the above problems at the same time, even if it can be solved, it needs to cut the test material into the required shape, which is not only troublesome, but also difficult to truly reflect the strength of the finished product. Therefore, we propose a tensile elasticity detection device for rubber products, which can stably clamp and fix materials of various shapes and thicknesses, and can also adaptively fix the plane of the twisted or irregular part outside the test material to facilitate extensometer measurement operation. SUMMARY

[0005] Technical problems solved In view of the deficiencies of the prior art, the present application provides a tensile elasticity detection device for rubber products, which has the advantages of being able to stably clamp and fix materials of various shapes and thicknesses, and can also adaptively fix the plane of the twisted or irregular part outside the test material to facilitate extensometer measurement operation.

[0006] Technical solutions The above technical problem of the present application is solved by the following technical solutions: a tensile elasticity detection device for rubber products, comprising a machine table, a hydraulic drive system is installed on the top of the inner side of the machine table, a top beam is fixedly connected to the bottom of the hydraulic drive system, a tension sensor is fixedly connected to the bottom of the top beam, two clamping piece parts are fixedly connected to the bottom of the tension sensor and the inner side of the machine table, an electronic extensometer is fixedly connected to the rear side of the machine table, and an outer clamping assembly is fixedly connected to the front side of the clamping arm of the electronic extensometer. The clamping piece part comprises an integrally formed vertical ring, a horizontal ring and a winding frame, the front side of the horizontal ring is fixedly connected with an extension bar, the inner side of the extension bar is rotatably connected with an inclined frame, the inner side of the inclined frame is threadedly connected with a screw rod, the side close to the winding frame of the screw rod is rotatably connected with a pressing frame, the inner side of the pressing frame is rotatably connected with a pressing disc, and the front side of the vertical ring is fixedly connected with an auxiliary part. The outer clamping assembly comprises an empty frame part, the front side of the empty frame part is fixedly connected with an empty ring frame, the inner side of the empty ring frame is slidably connected with a sliding ring, the inner side of the sliding ring is fixedly connected with two clamping frames, the inner side of the clamping frame is fixedly connected with an electric cylinder, and the telescopic end of the electric cylinder penetrates through the clamping frame and is fixedly connected with a clamping piece.

[0007] The above technical solution, by setting up a top beam, is used inside the machine tool to control the lifting and lowering of the tension sensor and the top clamping part via a hydraulic drive system. During testing, both ends of the test material can be fixed to the inner sides of the two clamping parts respectively, and the top beam is pulled up by the hydraulic drive system to provide tension for material testing. The tension sensor detects the tension, and an electronic extensometer is used to measure material deformation. When connecting the material to the clamping part, it can pass through a vertical ring, bend along the winding frame, and fit against the outer side of the winding frame. Then, rotating the screw causes the connected pressure frame to move closer to or away from the winding frame. When approaching the winding frame, the pressure frame is tilted and pressed against the material surface by the pressure plate, while the other side of the material contacts and is pressed firmly against the winding frame. Compared to the pneumatic clamps of the prior art... For rubber products with high surface friction, the clamp can generate greater friction with the winding frame to assist in fixation. When clamping and fixing thin sheet materials, it can also avoid loosening due to insufficient clamping force or damage to the clamping point due to excessive clamping force. When fixing thicker materials, after being pressed and fixed by the pressure frame and pressure plate, the auxiliary component can be used to further assist in fixing the material. The external clamping component replaces the clamping end of the electronic extensometer. When installing materials, the materials will be located inside the annular empty ring frame. If the material surface is twisted or irregular, the sliding ring can be rotated along the empty ring frame according to the flat part of its surface until the two clamps are in a position that is easy to fix. Then, the electric cylinder extends and clamps the material surface through the clamping plates. When testing the tensile strength, the empty frame part of the external clamping component and the clamping arm of the electronic extensometer are displaced to detect the deformation.

[0008] The invention is further configured such that: a contact strip is fixedly connected to the top of the top vertical ring and the bottom of the bottom vertical ring, and the contact strip contacts the inclined frame on the side near the inclined frame.

[0009] By adopting the above technical solution, when the material shape is complex or thick, the inclined frame can be opened or closed by rotating along the extension strip. When closed, the side of the inclined frame closest to the contact strip is fixed to the contact strip.

[0010] The invention is further configured such that: a pin is inserted into the inner side of the inclined frame, the pin is inserted into the contact strip on the side near the contact strip, and a stabilizing ring is sleeved on the outer side of the contact strip.

[0011] By adopting the above technical solution, a pin is set so that after the inclined frame is attached to the contact strip, the pin can be inserted through the inclined frame and the contact strip. A stabilizing ring is placed on the outside of the pin to assist in fixing it and prevent the structure from becoming loose.

[0012] The application is further provided with the following technical scheme: the pressing disc comprises a main disc, the outer side of the main disc is rotationally connected with the pressing frame, the inner side of the main disc is rotationally connected with two contact discs, and the side of the contact disc away from the main disc is fixedly connected with a pressing pad.

[0013] According to the above technical scheme, when the pressing disc is pressed against the material surface, if the material surface is uneven, the contact disc will be forced to rotate along the main disc when contacting the material through the pressing pad, and the main disc can also rotate along the pressing frame to adapt to the shape of the material surface, since the pressing frame can rotate along the screw rod, the pressing angle can be adjusted by rotation.

[0014] The application is further provided with the following technical scheme: the auxiliary part comprises auxiliary guide rails fixedly connected on both sides of the vertical ring, the inner sides of the two auxiliary guide rails are slidingly connected with sliding blocks, the two sliding blocks are fixedly connected with a pressing strip, the inner side of the pressing strip is slidingly connected with a rotating block, and the side of the rotating block close to the winding frame is fixedly connected with a puncture cone.

[0015] According to the above technical scheme, by arranging the auxiliary guide rails, the pressing strip can slide horizontally along the auxiliary guide rails through the sliding blocks, when it is necessary to fix the relatively thick material, the rotating block can be slid according to the width of the material to align the puncture cone with the position of the material, the puncture cone can be pierced into the material through the sliding pressing strip to avoid the structure from slipping off, and when the material is relatively hard and difficult to be pierced, the rotating block can be rotated to assist the action of piercing.

[0016] The application is further provided with the following technical scheme: the front side of the sliding block is fixedly connected with a protruding block, the front side of the auxiliary guide rail is slidingly connected with a horizontal pull rod, the rear side of the horizontal pull rod penetrates through the auxiliary guide rail and is fixedly connected with the protruding block, the outer side of the horizontal pull rod is sleeved with a pressing spring, and the two ends of the pressing spring are fixedly connected with the protruding block and the auxiliary guide rail respectively.

[0017] According to the above technical scheme, by arranging the protruding block and the horizontal pull rod, when the puncture cone needs to perform the puncture action, the horizontal pull rod can be pushed backward to assist the force, and in the same way, the horizontal pull rod can be pulled backward to perform the pulling-out action, and the arranged pressing spring can continue to press the protruding block and the sliding block connected therewith after the person stops applying the force, so that the puncture cone is not easy to slip off from the pierced material.

[0018] The application is further provided with the following technical scheme: the bottom of the auxiliary guide rail is slidingly connected with a limiting rod, the top of the limiting rod is fixedly connected with a blocking block, the outer side of the limiting rod is provided with a protruding part, the top of the protruding part is fixedly connected with a tension spring, the top of the tension spring is fixedly connected with the auxiliary guide rail, and the tension spring is sleeved on the outer side of the limiting rod.

[0019] The above technical scheme is adopted, the stop rod is arranged in cooperation with the blocking block, when the piercing action is not needed, the blocking block is blocked in front of the protruding block to avoid the sliding block from sliding, when the use is needed, the stop rod can be pulled down, the blocking block connected with the stop rod is pulled down, at this time, the tension spring is lengthened and stored, and the blocking block no longer blocks the protruding block, then the structure can be reset through the rebound of the tension spring to facilitate subsequent actions.

[0020] The electronic extensometer is further provided with a slide rod fixedly connected to the front side of the shell, a slide sleeve slidingly connected to the outer side of the slide rod, and a photoelectric width gauge fixedly connected to the front side of the slide sleeve.

[0021] The above technical scheme is adopted, the slide rod is arranged in cooperation with the slide sleeve, the position of the photoelectric width gauge can be adjusted, and the width information of the measured material can be detected through the photoelectric width gauge.

[0022] The slide ring is further provided with a groove at the top and the bottom, a pulley is rotatably connected to the inner side of the groove, and the outer side of the pulley is in contact with the inner side of the hollow ring frame.

[0023] The above technical scheme is adopted, the groove is arranged in cooperation with the pulley, and the slide ring can smoothly slide in the hollow ring frame.

[0024] The slide ring is further provided with a driven gear fixedly connected to the outer side, a servo motor and a speed reducer are fixedly connected to the inner side of the hollow frame, an output end of the servo motor and the speed reducer is fixedly connected with a driving gear, and the driving gear and the driven gear are meshingly connected.

[0025] The above technical scheme is adopted, the servo motor and the speed reducer are arranged, the driving gear can drive the driven gear to control the rotation of the slide ring along the hollow frame.

[0026] Advantages Compared with the prior art, the present application provides a tensile elasticity detection device for rubber products, which has the following advantages: The tensile elasticity detection device of the rubber product is characterized in that the top beam is arranged, the hydraulic driving system is used for controlling lifting in the machine table, the lifting action of the tensile sensor and the top clamping part is controlled, the two ends of the test material are fixed on the inner side of the two clamping parts during the detection, the top beam is pulled up by the hydraulic driving system, the tensile force is provided to test the material, the tensile force is detected by the tensile sensor, the material deformation is measured by the electronic extensometer, the material is connected with the clamping part, the material is passed through the vertical ring, is bent along the winding frame, and is attached to the outer side of the winding frame, then the screw is rotated, the pressure frame connected with the screw is close to or away from the winding frame, the pressure frame is tilted and pressed on the surface of the material by the pressure disc when the pressure frame is close to the winding frame, the other side of the material is in contact with and tightly pressed on the winding frame, compared with the pneumatic clamp in the prior art, the rubber product with high surface friction can generate greater friction with the winding frame to assist fixation, the clamping force is small to avoid loosening or the clamping force is large to avoid damage to the clamping part when the thin material is clamped and fixed, and the auxiliary part is used for further assisting the fixation of the material when the thick material is fixed after being pressed and fixed by the pressure frame and the pressure disc, the outer clamping assembly replaces the clamp end of the electronic extensometer, the material is located in the inner side of the annular empty ring frame when the material is installed, if the surface of the material is twisted or irregular, the flat part of the surface is rotated along the empty ring frame, the two clamping frames are in the fixed position, then the electric cylinder is elongated, the material surface is clamped by the clamping piece, and the displacement of the empty frame part of the outer clamping assembly and the clamping arm of the electronic extensometer is pulled during the tensile detection, so that the deformation detection effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic view of the main structure in the application; Figure 2 It is a connection schematic view of the electronic extensometer in the application; Figure 3 It is a structure schematic view of the clamping part in the application; Figure 4 It is a connection schematic view of the pressure disc in the application; Figure 5 It is a left view of the top clamping part in the application; Figure 6 It is a structure schematic view of the pressure disc in the application; Figure 7 It is a structure schematic view of the auxiliary part in the application; Figure 8 It is a structure schematic view of the outer clamping assembly in the application.

[0028] In the figure: 1, machine table; 2, top beam; 3, tension sensor; 4, clamping part; 41, vertical ring; 42, horizontal ring; 43, winding frame; 44, extension bar; 45, inclined frame; 46, screw rod; 47, pressure plate; 471, main plate; 472, contact plate; 473, pressure pad; 48, pressure frame; 49, auxiliary part; 491, auxiliary guide rail; 492, sliding block; 493, pressing strip; 494, rotating block; 495, puncture cone; 5, electronic extensometer; 6, outer clamping assembly; 61, empty frame part; 62, empty ring frame; 63, sliding ring; 64, clamping frame; 65, electric cylinder; 66, clamping piece; 7, contact strip; 8, bolt; 9, driving gear; 10, stabilizing ring; 11, protruding block; 12, cross pull rod; 13, pressure spring; 14, limiting rod; 15, blocking block; 16, tension spring; 17, sliding rod; 18, photoelectric width gauge; 19, pulley; 20, driven gear; 21, servo motor and speed reducer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment 1 Please refer to Figures 1-7 A tensile elasticity detection device for rubber products, comprising a machine table 1, a hydraulic drive system is installed on the top of the inner side of the machine table 1, the bottom of the hydraulic drive system is fixedly connected with a top beam 2, the bottom of the top beam 2 is fixedly connected with a tension sensor 3, the bottom of the tension sensor 3 and the bottom of the inner side of the machine table 1 are both fixedly connected with two clamping parts 4, the rear side of the machine table 1 is fixedly connected with an electronic extensometer 5, and the clamping arm front side of the electronic extensometer 5 is fixedly connected with an outer clamping assembly 6; The clamping part 4 comprises a vertically integrated vertical ring 41, a horizontal ring 42 and a winding frame 43, the front side of the horizontal ring 42 is fixedly connected with an extension bar 44, the inner side of the extension bar 44 is rotatably connected with an inclined frame 45, the inner side of the inclined frame 45 is threadedly connected with a screw rod 46, one side of the screw rod 46 close to the winding frame 43 is rotatably connected with a pressure frame 48, the inner side of the pressure frame 48 is rotatably connected with a pressure plate 47, and the front side of the vertical ring 41 is fixedly connected with an auxiliary part 49; By setting the top beam 2, the lifting is controlled by the hydraulic drive system inside the machine 1 to lift the tension sensor 3 and the top clamp part 4, when detecting, the two ends of the test material can be fixed on the inner side of the two clamp parts 4, and the top beam 2 is pulled up by the hydraulic drive system to provide tension to test the material, and the tension is detected by the tension sensor 3, and the material deformation is measured by the electronic extensometer 5 during the process. When the material is connected with the clamp part 4, it can pass through the vertical ring 41, and is bent along the frame 43 and is attached to the outside of the frame 43. Then rotate the screw 46, the pressure frame 48 connected with it will approach or move away from the frame 43 due to the rotation of the screw 46. When approaching the frame 43, the pressure frame 48 will be tilted and pressed on the surface of the material by the pressure plate 47, and the other side of the material is in contact with the frame 43 and is pressed tightly. Compared with the existing pneumatic clamp, the rubber product with high surface friction can produce greater friction with the frame 43 to assist in fixing, and when clamping and fixing the sheet material, it can also avoid loosening caused by too small clamping force or damage caused by too large clamping force. When fixing the thicker material, after being pressed and fixed by the pressure frame 48 and the pressure plate 47, the auxiliary part 49 can further assist in fixing the material.

[0031] The top of the top vertical ring 41 and the bottom of the bottom vertical ring 41 are fixedly connected with a contact strip 7, and the side close to the inclined shelf 45 of the contact strip 7 is in contact with the inclined shelf 45. By arranging the contact strip 7, the inclined shelf 45 can be opened or closed along the extension strip 44 when the material shape is complex or thick. When closed, the side close to the contact strip 7 of the inclined shelf 45 is fixed with the contact strip 7. The inner side of the inclined shelf 45 is inserted with a bolt 8, and the side close to the contact strip 7 of the bolt 8 is inserted with the contact strip 7. The outer side of the contact strip 7 is sleeved with a stabilizing ring 10. By arranging the bolt 8, the bolt 8 can be inserted into the inside of the inclined shelf 45 and the contact strip 7 after the inclined shelf 45 is attached to the contact strip 7, and the stabilizing ring 10 is arranged outside the bolt 8 to assist in fixing, so as to avoid the structure from loosening. The pressure plate 47 comprises a main plate 471. The outer side of the main plate 471 is rotationally connected with a pressure frame 48. The inner side of the main plate 471 is rotationally connected with two contact plates 472. The side away from the main plate 471 of the contact plate 472 is fixedly connected with a pressure pad 473. When the pressure plate 47 is pressed on the surface of the material, if the surface of the material is uneven, the contact plate 472 will be forced to rotate along the main plate 471 when contacting the material through the pressure pad 473. The main plate 471 can also rotate along the pressure frame 48 to adapt to the shape of the material surface. Since the pressure frame 48 can rotate along the screw rod 46, the pressing angle can also be adjusted by rotating, and the auxiliary part 49 comprises auxiliary guide rails 491 fixedly connected on both sides of the vertical ring 41. The inner sides of the two auxiliary guide rails 491 are slidably connected with sliding blocks 492. The two sliding blocks 492 are fixedly connected with a pressing strip 493. The inner side of the pressing strip 493 is slidably connected with a rotating block 494. The side close to the winding shelf 43 of the rotating block 494 is fixedly connected with a puncture cone 495. By arranging the auxiliary guide rail 491, the pressing strip 493 can slide horizontally along the auxiliary guide rail 491 through the sliding block 492. When it is necessary to assist in fixing the thick material, the sliding block 494 can be slid according to the width of the material to make the puncture cone 495 align with the position of the material, and the puncture cone 495 is inserted into the material to avoid the structure from slipping off. When the material is hard to be inserted, the rotating block 494 can be rotated to assist in the action of rotating and inserting. The front side of the sliding block 492 is fixedly connected with a protruding block 11. The front side of the auxiliary guide rail 491 is slidably connected with a horizontal pull rod 12. The rear side of the horizontal pull rod 12 penetrates the auxiliary guide rail 491 and is fixedly connected with the protruding block 11. The outer side of the horizontal pull rod 12 is sleeved with a pressing spring 13. The two ends of the pressing spring 13 are fixedly connected with the protruding block 11 and the auxiliary guide rail 491 respectively. By arranging the protruding block 11 and the horizontal pull rod 12, when the puncture cone 495 needs to perform the puncture action, the horizontal pull rod 12 can be pushed backward to assist in force. Similarly, the horizontal pull rod 12 can be pulled backward to make the protruding block 11 and the sliding block 492 connected with the protruding block 11 slide off. The bottom of the auxiliary guide rail 491 is slidably connected with a limiting rod 14.The top of the limiting rod 14 is fixedly connected with a blocking block 15, the outer side of the limiting rod 14 is provided with a protruding portion, the top of the protruding portion is fixedly connected with a tension spring 16, the top of the tension spring 16 is fixedly connected with an auxiliary guide rail 491, the tension spring 16 is sleeved on the outer side of the limiting rod 14, by arranging the limiting rod 14 cooperating with the blocking block 15, when the piercing action is not needed, the blocking block 15 will block in front of the protruding block 11 to avoid the sliding block 492 sliding, and when it is needed to use, the limiting rod 14 can be pulled down, the blocking block 15 connected with the limiting rod 14 is pulled down at the same time, at this time the tension spring 16 is elongated and stored, and the blocking block 15 no longer blocks the protruding block 11, then the structure can be reset by the rebound of the tension spring 16 to facilitate the subsequent action.

[0032] The working principle of the embodiment is as follows: first, the sample is installed and fixed, the two ends of the rubber sample to be detected are respectively threaded through the vertical ring 41 of the top and bottom clamping part 4, and are bent and attached along the outer side of the frame 43 to preliminarily prevent falling off by using friction, then the inclined frame 45 is rotated along the extension bar 44 according to the thickness or shape of the sample to make it attach to the contact bar 7, the inclined frame 45 is locked by the bolt 8 and the stable ring 10, and then the screw rod 46 is rotated to push the pressure frame 48, so that the pressure plate 47 is tilted to press against the surface of the sample, wherein the main plate 471 and the contact plate 472 of the pressure plate 47 can be self-adaptively rotated to adapt to the uneven sample surface, and the pressure pad 473 can buffer the pressure to avoid damage or falling off of the sample; for the sample which is relatively thick or has high hardness, auxiliary reinforcement is needed, that is, the limiting rod 14 is pulled down to make the blocking block 15 move downward to release the sliding block 492, the sliding block 492 is slid and the rotating block 494 is adjusted to make the piercing cone 495 align with the sample, the horizontal pull rod 12 is pushed to make the piercing cone 495 pierce into the sample, and after the horizontal pull rod 12 is loosened, the compression spring 13 continuously presses against the protruding block 11 to keep the piercing state, after detection, the horizontal pull rod 12 is pulled to pull out the piercing cone 495 and reset the limiting rod 14; finally, the tension test is started, the hydraulic driving system drives the top beam 2 to rise, the top clamping part 4 is pulled by the tension sensor 3 to apply tensile force to the sample, the tension sensor 3 records the tension value in real time, and the electronic extensometer 5 synchronously measures the deformation amount of the sample to provide data support for tensile elasticity analysis.

[0033] Embodiment 2 Reference Figures 1-8 The tensile elasticity detection device for the rubber product further comprises an outer clamping assembly 6, wherein the outer clamping assembly 6 comprises an empty frame part 61, the front side of the empty frame part 61 is fixedly connected with an empty ring frame 62, the inner side of the empty ring frame 62 is slidably connected with a sliding ring 63, the inner side of the sliding ring 63 is fixedly connected with two clamping frames 64, the inner side of the clamping frame 64 is fixedly connected with an electric cylinder 65, the telescopic end of the electric cylinder 65 penetrates through the clamping frame 64 and is fixedly connected with a clamping piece 66; The outer clamping assembly 6 replaces the clamping end of the electronic extensometer 5, and when the material is installed, the material is located inside the annular empty ring frame 62. If the surface of the material is distorted or irregular, the sliding ring 63 can be rotated along the empty ring frame 62 according to the flat part of the surface, until the two clamping frames 64 are in a position that is convenient for fixing. Then the electric cylinder 65 is elongated to clamp the surface of the material through the clamping piece 66. When the stretching is detected, the empty frame part 61 of the outer clamping assembly 6 and the clamping arm of the electronic extensometer 5 are displaced, so as to detect the deformation.

[0034] The front side of the shell of the electronic extensometer 5 is fixedly connected with a sliding rod 17. The outer side of the sliding rod 17 is slidably connected with a sliding sleeve. The front side of the sliding sleeve is fixedly connected with a photoelectric width gauge 18. By arranging the sliding rod 17 in cooperation with the sliding sleeve, the position of the photoelectric width gauge 18 can be conveniently adjusted. The width information of the measured material can be conveniently detected through the photoelectric width gauge 18. The top and bottom of the sliding ring 63 are provided with grooves. The inner sides of the grooves are rotatably connected with pulleys 19. The outer sides of the pulleys 19 are in contact with the inner side of the empty ring frame 62. By arranging the grooves in cooperation with the pulleys 19, it can be ensured that the sliding ring 63 can smoothly slide in the empty ring frame 62. The outer side of the sliding ring 63 is fixedly connected with a driven gear 20. The inner side of the empty frame part 61 is fixedly connected with a servo motor and a speed reducer 21. The output end of the servo motor and the speed reducer 21 is fixedly connected with a driving gear 9. The driving gear 9 and the driven gear 20 are meshingly connected. By arranging the servo motor and the speed reducer 21, the driven gear 20 can be driven by the driving gear 9, so as to control the sliding ring 63 to rotate along the empty frame part 61.

[0035] The working principle of the embodiment is as follows: The empty frame part 61 of the outer clamping assembly 6 is connected with the clamping arm of the electronic extensometer 5. The sliding ring 63 inside the annular empty ring frame 62 can smoothly slide through the pulleys 19 in the top and bottom grooves. The driving gear 9 is driven by the servo motor and the speed reducer 21 to meshingly drive the driven gear 20 on the outer side of the sliding ring 63, so as to realize the stable rotation of the sliding ring 63 along the empty ring frame 62. When the sample is installed, the sample is located inside the empty ring frame 62. If the surface of the sample is distorted or irregular, the sliding ring 63 can be rotated through the above-mentioned driving structure, so as to adjust the two clamping frames 64 on the inner side of the sliding ring 63 to a position that is convenient for fixing, such as the flat part of the surface of the sample. Then the electric cylinder 65 on the inner side of the clamping frame 64 is elongated to push the clamping piece 66 to clamp the surface of the sample, so as to complete the connection between the extensometer and the sample. When the sample is detected, the electronic extensometer 5 pulls the empty frame part 61 and the clamping frame 64 that clamps the sample, so as to realize the measurement of the stretching deformation of the sample. At the same time, the sliding rod 17 on the front side of the shell of the electronic extensometer 5 cooperates with the sliding sleeve, so as to flexibly adjust the position of the photoelectric width gauge 18, which is convenient for real-time detection of the width information of the measured material, and assists in perfecting the detection data.

[0036] The specific embodiments are only an explanation of the present application, which is not a limitation of the present application, and the person skilled in the art can make modifications to the embodiments according to the needs without creative contribution after reading the specification. Although the embodiments of the present application have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for testing the tensile elasticity of rubber products, comprising a machine base (1), wherein a hydraulic drive system is installed on the top of the inner side of the machine base (1), and a top beam (2) is fixedly connected to the bottom of the hydraulic drive system, characterized in that: A tension sensor (3) is fixedly connected to the bottom of the top beam (2). Two clamping parts (4) are fixedly connected to the bottom of the tension sensor (3) and the bottom of the inner side of the machine base (1). An electronic extensometer (5) is fixedly connected to the rear side of the machine base (1). An external clamping assembly (6) is fixedly connected to the front side of the clamping arm of the electronic extensometer (5). The clamping part (4) includes an integrally formed vertical ring (41), a horizontal ring (42) and a winding frame (43). An extension bar (44) is fixedly connected to the front side of the horizontal ring (42). A slant frame (45) is rotatably connected to the inner side of the extension bar (44). A screw (46) is threadedly connected to the inner side of the slant frame (45). A pressure frame (48) is rotatably connected to the side of the screw (46) near the winding frame (43). A pressure plate (47) is rotatably connected to the inner side of the pressure frame (48). An auxiliary part (49) is fixedly connected to the front side of the vertical ring (41). The outer clamping assembly (6) includes a hollow frame (61), a hollow ring frame (62) is fixedly connected to the front side of the hollow frame (61), a slip ring (63) is slidably connected to the inner side of the hollow ring frame (62), two clamps (64) are fixedly connected to the inner side of the slip ring (63), an electric cylinder (65) is fixedly connected to the inner side of the clamp (64), and the telescopic end of the electric cylinder (65) passes through the clamp (64) and is fixedly connected to a clamping plate (66).

2. The tensile elasticity testing device for rubber products according to claim 1, characterized in that: The top of the top vertical ring (41) and the bottom of the bottom vertical ring (41) are both fixedly connected with contact strips (7), and the contact strips (7) are in contact with the inclined frame (45) on the side near the inclined frame (45).

3. The tensile elasticity testing device for rubber products according to claim 2, characterized in that: The inside of the inclined frame (45) is fitted with a pin (8), the pin (8) is fitted with the contact bar (7) on the side close to the contact bar (7), and a retaining ring (10) is fitted on the outside of the contact bar (7).

4. The tensile elasticity testing device for rubber products according to claim 1, characterized in that: The pressure plate (47) includes a main plate (471), the outer side of the main plate (471) is rotatably connected to the pressure frame (48), and the inner side of the main plate (471) is rotatably connected to two contact plates (472). A pressure pad (473) is fixedly connected to the side of the contact plate (472) away from the main plate (471).

5. The tensile elasticity testing device for rubber products according to claim 1, characterized in that: The auxiliary component (49) includes auxiliary guide rails (491) fixedly connected to both sides of the vertical ring (41), with sliders (492) slidably connected to the inner sides of the two auxiliary guide rails (491), and pressure strips (493) fixedly connected between the two sliders (492). A rotating block (494) is slidably connected to the inner side of the pressure strip (493), and a piercing cone (495) is fixedly connected to the side of the rotating block (494) near the winding frame (43).

6. The tensile elasticity testing device for rubber products according to claim 5, characterized in that: The front side of the slider (492) is fixedly connected to a protrusion (11), and the front side of the auxiliary guide rail (491) is slidably connected to a horizontal pull rod (12). The rear side of the horizontal pull rod (12) passes through the auxiliary guide rail (491) and is fixedly connected to the protrusion (11). A compression spring (13) is sleeved on the outer side of the horizontal pull rod (12). The two ends of the compression spring (13) are fixedly connected to the protrusion (11) and the auxiliary guide rail (491) respectively.

7. The tensile elasticity testing device for rubber products according to claim 6, characterized in that: The bottom of the auxiliary guide rail (491) is slidably connected to a limiting rod (14), and a blocking block (15) is fixedly connected to the top of the limiting rod (14). The outer side of the limiting rod (14) is provided with a protrusion, and a tension spring (16) is fixedly connected to the top of the protrusion. The top of the tension spring (16) is fixedly connected to the auxiliary guide rail (491), and the tension spring (16) is sleeved on the outer side of the limiting rod (14).

8. The tensile elasticity testing device for rubber products according to claim 1, characterized in that: The electronic extensometer (5) has a slide rod (17) fixedly connected to the front side of its housing. A sliding sleeve is slidably connected to the outside of the slide rod (17), and a photoelectric width meter (18) is fixedly connected to the front side of the sliding sleeve.

9. The tensile elasticity testing device for rubber products according to claim 1, characterized in that: The top and bottom of the slip ring (63) are provided with grooves, and a pulley (19) is rotatably connected to the inner side of the groove. The outer side of the pulley (19) is in contact with the inner side of the empty ring frame (62).

10. The tensile elasticity testing device for rubber products according to claim 1, characterized in that: The outer side of the slip ring (63) is fixedly connected to a driven gear (20), and the inner side of the empty frame (61) is fixedly connected to a servo motor and a reducer (21). The output end of the servo motor and the reducer (21) is fixedly connected to a driving gear (9), and the driving gear (9) and the driven gear (20) are meshed together.

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