A tensile testing machine for metal material inspection

Abstract

The present invention discloses a tensile testing machine for metal material inspection, comprising a testing machine platform and a digital display control panel, wherein the testing machine platform is respectively provided with a loading and unloading chamber and a test chamber, a partition plate for separating the loading and unloading chamber and the test chamber is provided between the loading and unloading chamber and the test chamber, a loading and unloading clamping assembly is provided on the partition plate for sealing and rotation, and the loading and unloading clamping assembly is provided with more than two clamping positions; by providing the loading and unloading chamber and the test chamber in the testing machine platform, the test chamber is always in a closed state under the test state, and the loading and unloading is completed by the loading and unloading clamping assembly in the loading and unloading chamber, thereby avoiding the contact between the test chamber and the outside air when performing a tensile test under the simulated material application temperature environment, avoiding the influence of the external environment and the taking and placing by the staff, and avoiding a large amount of energy exchange between the test chamber and the outside air, so that the simulation of the metal material can continuously test multiple groups of metal materials at the same temperature.

Description

Technical Field

[0001] The invention relates to the field of metal material testing equipment, and in particular to a tensile testing machine for metal material inspection. Background Art

[0002] Metal is a substance with lustrous, ductile, easy to conduct electricity and heat. In real life, in order to understand the properties of metal more clearly, it is necessary to conduct various tests on metal. There are many resistance tests for metal materials, such as resistance tests on metals at different temperatures, or resistance tests on used metals and metals under other conditions, etc.

[0003] A tensile testing machine for metal material inspection with application number 202210430891.9, comprising a box, a hydraulic cylinder and a base are fixedly installed at the center positions of the upper and lower walls inside the box, a hydraulic fixing clamp is fixedly installed on the telescopic end of the hydraulic cylinder and the upper wall of the base, and a pair of working ends of the hydraulic fixing clamp are arranged facing each other and located on the same vertical center line;

[0004] However, most of the current metal tensile testing equipment is open-type and cannot simulate tensile tests on metals under different temperature environments. The metal tensile testing equipment that can simulate tests at different temperatures adopts a semi-open design. When the metal materials for the test are taken and placed in the equipment, the chamber of the simulated temperature environment in the equipment is connected to the outside. The high temperature environment inside the equipment is easy to affect the external environment and the staff's taking and placing. Secondly, the internal temperature environment is easy to exchange energy with the outside, affecting the simulation of the internal temperature of the equipment and wasting energy. Summary of the invention

[0005] The object of the present invention is to provide a tensile testing machine for metal material inspection in order to solve the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a tensile testing machine for metal material inspection, comprising a testing machine platform and a digital display control panel, wherein the testing machine platform is provided with a loading and unloading chamber and a testing chamber, respectively, and a partition plate for separating the loading and unloading chamber and the testing chamber is provided between the loading and unloading chamber and the testing chamber, and a loading and unloading clamping assembly is provided on the partition plate in a sealing and rotatable manner, and the loading and unloading clamping assembly is provided with more than two clamping positions;

[0008] During the rotation of the loading and unloading clamping assembly, when one of the clamping positions of the loading and unloading clamping assembly is in the loading and unloading chamber, there is always another clamping position of the loading and unloading clamping assembly in the test chamber;

[0009] The test chamber is provided with two stretching clamping drive components that can clamp and position the materials clamped by the upper and lower material clamping components at both ends, and a stretching deformation monitoring component that can monitor the deformation of the axial length and radial width of the material is provided between the two stretching clamping drive components. The test chamber is provided with a temperature control and adjustment component.

[0010] Furthermore, the test machine is provided with an inlet and outlet that can connect the loading and unloading chambers with the outside, a cover is provided at the loading and unloading chambers, and a pneumatic push rod that can drive the cover to open and close is provided on the test machine, and a first transparent observation window is provided on the cover.

[0011] Furthermore, the loading and unloading clamping assembly includes a rotating table with a cylindrical outer contour, the rotating table is axially arranged horizontally and rotatably arranged in a sealed rotating through groove provided on the partition plate, one of the axial ends of the rotating table is driven to rotate by a first motor fixedly arranged in the partition plate, and the outer side of the rotating table is provided with more than two groups of clamping grooves along its circumferential direction, each group includes two clamping grooves respectively provided at both ends of the rotating table, and an open groove is provided on the outer side of the rotating table between each group of two clamping grooves, and two clamping wheels are rotatably arranged in each clamping groove, and a distance adjustment structure for adjusting the distance between the two clamping wheels is provided between the two clamping wheels, and the output end of the digital display control panel is electrically connected to the input end of the first motor.

[0012] Furthermore, the distance adjustment structure includes a first slide groove opened in the test machine table, a wheel groove connected to the first slide groove is penetrated on the rotating table between the two clamping wheels in the same clamping groove, a wheel axle is rotatably arranged at the central axis of each clamping wheel, an angle sensor for detecting the angular displacement between the wheel axle and the clamping wheel is arranged in the clamping wheel, the axial end of the wheel axle extends through the wheel groove to the first slide groove and is fixedly connected with a wheel seat, the wheel seat is slidably arranged in the wheel groove, a connecting rod is fixedly connected to each other between the two wheel seats on the same side corresponding to each group of clamping grooves, a first electric telescopic rod for driving the two to move away from or closer to each other is arranged between the two connecting rods, the first electric telescopic rod adopts a double-axis electric push rod, an annular groove is opened on the outer side of each clamping wheel along its circumferential direction, and the cross-sectional shape of the annular groove is V-shaped, the output end of the digital display control panel is electrically connected to the input end of the first electric telescopic rod, and the output end of the angle sensor is electrically connected to the input end of the digital display control panel.

[0013] Furthermore, the stretching clamping drive assembly includes a third slide groove provided on the bottom surface of the test chamber, a third slider is slidably arranged in the third slide groove, a second motor fixedly arranged in the test machine is provided at one end of the third slide groove, a lead screw is rotatably arranged in the third slide groove, a threaded hole threadedly connected to the lead screw is penetrated in the third slider, the axial direction of the lead screw and the sliding direction of the third slider in the third slide groove are consistent with each other, one end of the lead screw is fixedly connected to the output shaft end of the second motor, a support rod is fixedly connected to the upper side of the third slider, a second pneumatic clamp is provided at the upper end of the support rod, a tension sensor is connected between the support rod and the second pneumatic clamp, the output end of the tension sensor is electrically connected to the input end of the digital display control panel, and the output end of the digital display control panel is electrically connected to the input ends of the second motor and the second pneumatic clamp respectively.

[0014] Furthermore, the tensile deformation monitoring component includes a lifting slide opened on the bottom surface of the test chamber, a lifting platform is arranged in the lifting slide for sliding up and down, a second electric telescopic rod for driving the lifting platform to move up and down is fixedly arranged on the bottom surface of the test chamber, and a clamping and ranging component is arranged on one side of the upper part of the lifting platform close to the tensile clamping drive component.

[0015] Furthermore, the clamping and ranging assembly includes first pneumatic clamps respectively slidably arranged on both sides of the upper part of the lifting platform, each of the first pneumatic clamps is provided with two first clamping plates, each of the first clamping plates is provided with a material radial deformation monitoring structure, a third electric telescopic rod capable of adjusting the distance between the two first pneumatic clamps is fixedly arranged in the lifting platform, a second slider is fixedly arranged on the lower side of each first pneumatic clamp, the second slider is slidably arranged in a second slide groove opened on the upper side of the lifting platform, the third electric telescopic rod adopts a double-axis electric push rod, the two push rod head ends of the third electric telescopic rod respectively slide through the corresponding second slider and are fixedly connected with a block, and the third electric The telescopic direction of the push rod of the telescopic rod is consistent with the sliding direction of the second slider in the second slide groove. A first infrared ranging generator and a first infrared ranging receiver for detecting the distance between each first pneumatic clamp and the lifting platform are arranged. One end of more than two guide rods is fixedly connected to the side of the lifting platform close to the first pneumatic clamp, and the other end of the guide rod is slidably connected to the guide sliding hole provided at the corresponding position of the first pneumatic clamp. The output ends of the first infrared ranging generator and the first infrared ranging receiver are electrically connected to the input end of the digital display control panel, and the output ends of the digital display control panel are electrically connected to the input ends of the first pneumatic clamp and the third electric telescopic rod respectively.

[0016] Furthermore, the material radial deformation monitoring structure includes a touch plate arranged on the opposite side of the two first clamps, one end of the connecting shaft is fixedly connected to one side of the touch plate, and the other end of the connecting shaft is slidably connected to a connecting slide hole opened at a corresponding position of the first clamp, a spring is fixedly connected between the end of the connecting shaft and the inner end surface of the connecting slide hole, a second infrared ranging generator and a second infrared ranging receiver for detecting the distance between the two are arranged between the inner end surface of the connecting slide hole and the end of the connecting shaft, and the output ends of the second infrared ranging generator and the second infrared ranging receiver are electrically connected to the input end of the digital display control panel.

[0017] Furthermore, the temperature control and adjustment component includes a heater and a refrigerator respectively arranged in the test chamber, a temperature sensor is arranged in the test chamber, the output end of the temperature sensor is electrically connected to the input end of the digital display control panel, and the output end of the digital display control panel is electrically connected to the input ends of the heater and the refrigerator respectively.

[0018] Furthermore, the test machine is provided with a second transparent observation window and a rear window on one side close to the test chamber, and a rear window cover is provided at the rear window.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. By setting up a loading and unloading chamber and a test chamber in the test machine, the test chamber is always in a closed state under the test state, and the loading and unloading are completed by the loading and unloading clamping components in the loading and unloading chamber, avoiding the contact of the test chamber with the outside air when conducting a tensile test under the simulated material application temperature environment, avoiding the influence of the external environment and the staff's taking and placing, and a large amount of energy exchange between the test chamber and the outside air, so that the simulation of metal materials can continuously test multiple groups of metal materials at the same temperature.

[0021] 2. After the loading and unloading clamping assembly rotates and sends the clamped metal material into the test chamber, the stretching clamping drive assembly can automatically clamp the metal material and provide stretching driving force. The magnitude of the driving tension is detected by the tension sensor and feedback controlled in conjunction with the digital display control panel. In addition, the loading and unloading clamping assembly can also send the stretched material out of the test chamber;

[0022] 3. The tensile deformation monitoring component can monitor the tensile deformation of metal materials, such as the axial length and radial width of the rod metal material, as well as the tensile length and thickness of the flat long strip metal material. When monitoring the deformation of the length of the metal material, it can also be compared with the rotational angular displacement detection data of the clamping wheel by the angle sensor. The combination of the two can more accurately and intuitively obtain the tensile deformation data of the metal material.

[0023] 4. Through the coordination and cooperation between the test machine, loading and unloading clamping components, tensile deformation monitoring components, tensile clamping drive components and temperature control and adjustment components, the tensile test of metal materials at different temperatures can be realized, the closure of the test chamber during the loading and unloading process can be achieved, and the automatic loading and tensile test of metal materials and the automatic monitoring of the tensile deformation of metal materials can be realized, forming an indivisible whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a main structural schematic diagram of the present invention;

[0026] Figure 2 The present invention Figure 1 Schematic diagram of the left view structure;

[0027] Figure 3 The present invention Figure 1 AA cross-sectional structural diagram;

[0028] Figure 4 The present invention Figure 1 BB cross-sectional structure diagram;

[0029] Figure 5 The present invention Figure 4 A schematic diagram of the local enlarged structure at D;

[0030] Figure 6 The present invention Figure 2 Schematic diagram of CC cross-section structure;

[0031] Figure 7 The present invention Figure 6 A schematic diagram of the local enlarged structure at E;

[0032] Figure 8 The present invention Figure 1 Schematic diagram of the three-dimensional structure;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the tensile deformation monitoring assembly of the present invention;

[0034] Fig.10 It is a schematic diagram of the cross-sectional structure of the first splint of the present invention.

[0035] The accompanying drawings are described as follows: 1. Test machine; 101. Inlet and outlet; 102. Cover; 103. Pneumatic push rod; 104. First transparent observation window; 105. Second transparent observation window; 106. Foot column; 107. Loading and unloading chamber; 108. Partition plate; 109. Test chamber; 110. Rear window cover; 111. Sealed rotating through groove; 2. Loading and unloading clamping assembly; 201. Rotating table; 202. First electric telescopic rod; 203. First slide groove; 204. Connecting rod; 205. Wheel seat; 206. Wheel axle; 207. Clamping wheel; 208. Annular slot; 209. Angle sensor; 210. Clamping slot; 211. Open slot; 212. First motor; 213. Wheel slot; 3. Tensile deformation monitoring assembly; 301. Lifting slide; 302. Lifting table; 3 03. Second electric telescopic rod; 304. First pneumatic clamp; 305. Second slider; 306. Block; 307. Second slide; 308. First infrared distance measuring generator; 309. First infrared distance measuring receiver; 310. First clamp; 311. Contact plate; 312. Guide rod; 313. Third electric telescopic rod; 314. Connecting shaft; 315. Spring; 316. Second infrared distance measuring generator; 317. Second infrared distance measuring receiver; 318. Connecting slide hole; 4. Stretching clamping drive assembly; 401. Third slide; 402. Second motor; 403. Lead screw; 404. Third slider; 405. Support rod; 406. Tension sensor; 407. Second pneumatic clamp; 5. Heater; 6. Refrigerator; 7. Temperature sensor; 8. Digital display control panel. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme of the present invention will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-10As shown, the present invention provides a tensile testing machine for metal material inspection, including a testing machine platform 1 in the shape of a rectangular parallelepiped as a whole and a digital display control panel 8 arranged at the front side of the testing machine platform 1. A loading and unloading chamber 107 and a test chamber 109 are respectively opened in the testing machine platform 1 along the up and down directions. The test chamber 109 is in a closed state as a whole. In order to facilitate observation of the inside of the closed test chamber 109, a second transparent observation window 105 can be arranged on the outside of the testing machine platform 1. In order to repair the inside of the test chamber 109, a rear window can be opened on the outside of the testing machine platform 1. A rear window cover 110 is sealed at the rear window. The loading and unloading chamber 107 and the test chamber 109 are connected. A partition plate 108 is provided for separating the two, and a sealed rotating groove 111 is provided on the partition plate 108. A loading and unloading clamping assembly 2 is provided in the sealed rotating groove 111 for sealing rotation. The loading and unloading clamping assembly 2 is provided with more than two clamping positions; taking the two clamping positions as an example, during the rotation of the loading and unloading clamping assembly 2, when one of the clamping positions is in the loading and unloading chamber 107, the other clamping position is in the test chamber 109; when a tensile test is performed on the metal material at the clamping position located in the test chamber 109, the next metal material to be tested can be pre-installed on the clamping position located in the loading and unloading chamber 107, thereby improving the tensile test efficiency.

[0038] Two stretching clamping drive components 4 are arranged in the test chamber 109. The two stretching clamping drive components 4 can clamp and position the two ends of the material clamped by the loading and unloading clamping components 2, and are suitable for clamping and positioning metal materials of different lengths. A stretching deformation monitoring component 3 capable of monitoring the deformation of the axial length and radial width of the material is arranged between the two stretching clamping drive components 4. When the metal material is in the shape of a long strip, the stretching deformation monitoring component 3 can monitor the deformation size of the material length and the thickness of the material. A temperature control adjustment component capable of adjusting the temperature environment therein is arranged in the test chamber 109, which is used for simulating stretching tests on materials under different temperature environments.

[0039] See the instruction manual Figure 1 and 3 As shown, the test machine 1 is provided with an inlet and outlet 101 which can connect the loading and unloading chamber 107 with the outside, a cover 102 is provided at the loading and unloading chamber 107, a pneumatic push rod 103 which can drive the cover 102 to open and close is provided on the test machine 1, and a first transparent observation window 104 is provided on the cover 102.

[0040] The present embodiment proposes a specific loading and unloading clamping assembly 2, which includes a rotating table 201 with a cylindrical outer contour. The outer side of the rotating table 201 is provided with more than two groups of clamping grooves 210 along its circumferential direction. Each group includes two clamping grooves 210 respectively opened at both ends of the rotating table 201. An open groove 211 is opened on the outer side of the rotating table 201 between each group of two clamping grooves 210. The open groove 211 is used to cooperate with the tensile deformation monitoring assembly 3 to detect the tensile deformation of the material. Two clamping wheels 207 are rotatably arranged in each clamping groove 210, and a distance adjustment structure for adjusting the distance between the two clamping wheels 207 is arranged between the two clamping wheels 207. The output end of the digital display control panel 8 is electrically connected to the input end of the first motor 212. The distance adjustment structure includes a first slide groove 203 provided in the test machine 1, a wheel groove 213 which is connected to the first slide groove 203 and is provided on the rotating table 201 between two clamping wheels 207 in the same clamping groove 210, a wheel axle 206 is rotatably provided at the central axis of each clamping wheel 207, an angle sensor 209 for detecting the angular displacement between the wheel axle 206 and the clamping wheel 207 is provided in the clamping wheel 207, the shaft end of the wheel axle 206 extends through the wheel groove 213 to the first slide groove 203 and is fixedly connected to a wheel seat 205, and the wheel seat 205 is slidably provided in the wheel groove In 213, two wheel seats 205 on the same side corresponding to each group of clamping grooves 210 are fixedly connected to each other with a connecting rod 204, and a first electric telescopic rod 202 for driving the two to move away from or closer to each other is arranged between the two connecting rods 204. The first electric telescopic rod 202 adopts a double-axis electric push rod, and an annular groove 208 is opened on the outer side of each clamping wheel 207 along its circumferential direction, and the cross-sectional shape of the annular groove 208 is V-shaped, and the output end of the digital display control panel 8 is electrically connected to the input end of the first electric telescopic rod 202, and the output end of the angle sensor 209 is electrically connected to the input end of the digital display control panel 8. Through the above-mentioned specific structural design, the extension and retraction of the two push rods of the first electric telescopic rod 202 can drive the two connecting rods 204 to move closer to or away from each other, thereby driving the wheel seat 205 to slide in the wheel groove 213, thereby driving the two clamping wheels 207 located in the same clamping groove 210 to move closer to or away from each other. The clamping wheel 207 can clamp and position flat materials, and the rod-shaped metal material can be clamped in the annular clamping groove 208. When the tensile clamping drive component 4 performs a tensile test on the metal material, the metal material will extend and deform along the force direction. At this time, the deformed metal material will drive the clamping wheel 207 to rotate a certain angle. The angle sensor 209 can detect the rotational angular displacement of the clamping wheel 207, and transmit the detected electrical signal to the digital display control panel 8. Compared with the length deformation data detected by the tensile deformation monitoring component 3, the two are combined to obtain the tensile deformation data of the metal material more accurately and intuitively.

[0041] It should be noted that, in order to cooperate with the above-mentioned loading and unloading clamping assembly 2, the present embodiment proposes a specific stretching clamping drive assembly 4, which includes a third slide groove 401 provided on the bottom surface of the test chamber 109, a third slider 404 is slidably provided in the third slide groove 401, a second motor 402 fixedly provided in the test machine 1 is provided at one end of the third slide groove 401, a lead screw 403 is rotatably provided in the third slide groove 401, a threaded hole is penetrated in the third slider 404 and is threadedly connected with the lead screw 403, and the axial direction of the lead screw 403 is aligned with the third The sliding directions of the sliders 404 in the third slide groove 401 are consistent with each other, one end of the lead screw 403 is fixedly connected to the output shaft end of the second motor 402, a support rod 405 is fixedly connected to the upper side of the third slider 404, a second pneumatic clamp 407 is provided at the upper end of the support rod 405, a tension sensor 406 is connected between the support rod 405 and the second pneumatic clamp 407, the output end of the tension sensor 406 is electrically connected to the input end of the digital display control panel 8, and the output end of the digital display control panel 8 is electrically connected to the input end of the second motor 402 and the second pneumatic clamp 407, respectively. Through the above-mentioned specific structural design, the loading and unloading clamping assembly 2 and the stretching clamping drive assembly 4 can cooperate to realize the automatic loading of metal materials for tensile testing, and the second motor 402 drives the screw 403 to adjust the position of the third slider 404, and the position of the second pneumatic clamp 407 can be adjusted to achieve clamping and positioning of metal materials of different lengths, and provide driving tension for tensile testing. The size of the driving tension is detected by the tension sensor 406 and feedback controlled in conjunction with the digital display control panel 8.

[0042] See the instruction manual Figure 3 , 7As shown in Figures 9 and 10, the tensile deformation monitoring component 3 includes a lifting slide 301 opened on the inner bottom surface of the test chamber 109, a lifting platform 302 is arranged to slide up and down in the lifting slide 301, a second electric telescopic rod 303 for driving the lifting platform 302 to move up and down is fixedly arranged on the inner bottom surface of the test chamber 109, and a clamping distance measuring component is respectively arranged on one side of the upper part of the lifting platform 302 close to the tensile clamping drive component 4. The clamping and ranging assembly includes first pneumatic clamps 304 which are slidably arranged on both sides of the upper part of the lifting platform 302, each of which is provided with two first clamping plates 310, each of which is provided with a material radial deformation monitoring structure, a third electric telescopic rod 313 which can adjust the distance between the two first pneumatic clamps 304 is fixedly arranged in the lifting platform 302, a second slider 305 is fixedly arranged on the lower side of each first pneumatic clamp 304, the second slider 305 is slidably arranged in a second slide groove 307 provided on the upper side of the lifting platform 302, the third electric telescopic rod 313 adopts a double-axis electric push rod, the two push rod head ends of the third electric telescopic rod 313 slide through the corresponding second slider 305 respectively and are fixedly connected with a stopper 306, the third electric telescopic rod The extension and retraction direction of the push rod 313 is consistent with the sliding direction of the second slider 305 in the second slide groove 307. A first infrared ranging generator 308 and a first infrared ranging receiver 309 for detecting the distance between each first pneumatic clamp 304 and the lifting platform 302 are arranged. One end of more than two guide rods 312 is fixedly connected to the side of the lifting platform 302 close to the first pneumatic clamp 304, and the other end of the guide rod 312 is slidably connected to the guide slide hole provided at the corresponding position of the first pneumatic clamp 304. The output ends of the first infrared ranging generator 308 and the first infrared ranging receiver 309 are electrically connected to the input end of the digital display control panel 8, and the output ends of the digital display control panel 8 are electrically connected to the input ends of the first pneumatic clamp 304 and the third electric telescopic rod 313 respectively. The material radial deformation monitoring structure includes a touch plate 311 arranged on the opposite side of the two first clamps 310, one end of the connecting shaft 314 is fixedly connected to one side of the touch plate 311, and the other end of the connecting shaft 314 is slidably connected to a connecting slide hole 318 opened at a corresponding position of the first clamp 310, and a spring 315 is fixedly connected between the end of the connecting shaft 314 and the inner end surface of the connecting slide hole 318, and a second infrared ranging generator 316 and a second infrared ranging receiver 317 for detecting the distance between the two are arranged between the inner end surface of the connecting slide hole 318 and the end of the connecting shaft 314, and the output ends of the second infrared ranging generator 316 and the second infrared ranging receiver 317 are electrically connected to the input end of the digital display control panel 8.Through the above-mentioned specific structural design, when the stretching clamping drive component 4 applies an initial pulling force to the metal material so that the stretching clamping drive component 4 is in a stretched state, the distance between the two first pneumatic clamping jaws 304 is adjusted to the closest position by the second electric telescopic rod 303, and then the push rod of the second electric telescopic rod 303 is extended to reach the maximum stroke, so that the stopper 306 and the second slider 305 are separated, and the first clamping plates 310 of the two first pneumatic clamping jaws 304 clamp and fix the metal material. At this time, the spring 315 is in a compressed state. When the metal material is deformed, the first pneumatic clamping jaws 304 are driven to slide relative to the lifting platform 302, thereby The positions of the two first pneumatic clamps 304 slip, and the sliding distance is detected by the first infrared ranging generator 308 and the first infrared ranging receiver 309, and the electrical signal is transmitted to the digital display control panel 8. The dimensional change in the width direction during the deformation process is detected by the change in the spacing between the two contact plates 311 of the same first pneumatic clamp 304, and the contact plate 311 always keeps in contact with the metal material under the elastic force of the spring 315. At this time, the second infrared ranging generator 316 and the second infrared ranging receiver 317 cooperate to monitor the position change of the touch plate 311, thereby transmitting the detected electrical signal to the digital display control panel 8.

[0043] The temperature control and adjustment component includes a heater 5 and a refrigerator 6 respectively arranged in the test chamber 109. A temperature sensor 7 is arranged in the test chamber 109. The output end of the temperature sensor 7 is electrically connected to the input end of the digital display control panel 8. The output end of the digital display control panel 8 is electrically connected to the input ends of the heater 5 and the refrigerator 6 respectively.

[0044] Working principle:

[0045] When conducting a tensile test on a metal material, firstly, one of the metal materials to be tested is placed on a clamping position of the loading and unloading clamping assembly 2. Specifically, a long strip or rod-shaped metal material is placed in two clamping grooves 210 corresponding to the axial direction of the rotating table 201, and the first electric telescopic rods 202 corresponding to the two clamping grooves 210 drive the clamping wheels 207 to approach each other, so that the clamping wheels 207 clamp the material. If it is a rod-shaped metal material, the annular clamping groove 208 clamps and fixes the material. It should be noted that the length of the metal material cannot exceed the two ends of the rotating table 201 to avoid collision and interference with the rotating through groove 111.

[0046] The first motor 212 of the loading and unloading clamping assembly 2 drives the rotating table 201 to rotate, and rotates the clamping position holding the material into the test chamber 109 and corresponds to the position of the tensile clamping drive assembly 4. Taking the loading and unloading clamping assembly 2 having two clamping positions as an example, the loading and unloading clamping assembly 2 can be rotated 180 degrees to achieve the flipping of the clamping position. When the temperature control and adjustment assembly adjusts the temperature in the test chamber 109 to simulate the working temperature environment of the metal material, the loading and unloading clamping assembly 2 is used to load and unload the metal material in the loading and unloading chamber 107, and then the tensile test is performed in the test chamber 109, thereby avoiding the leakage of the temperature environment in the test chamber 109 due to the connection between loading and unloading and the outside, and avoiding high temperature or low temperature injuries to the staff during loading and unloading;

[0047] When the metal material is subjected to a tensile test in the test chamber 109, two tensile clamping drive assemblies 4 clamp and stretch the two ends of the metal material, and the tensile clamping drive assembly 4 detects the tensile force of the tension sensor 406 and adjusts it in conjunction with the digital display control panel 8, while the tensile deformation monitoring assembly 3 can detect the dimensional deformation of the metal material along its length direction and the dimensional deformation in the width direction;

[0048] After the test is completed, the loading and unloading clamping assembly 2 re-clamps and fixes the metal material, and the stretching clamping drive assembly 4 releases the clamping of the metal material. The loading and unloading clamping assembly 2 rotates, and the tested material is turned into the loading and unloading chamber 107 for removal, and then the next metal material can be re-clamped.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tensile testing machine for metal material inspection, characterized in that: The invention comprises a test machine (1) and a digital display control panel (8), wherein the test machine (1) is provided with a loading and unloading chamber (107) and a test chamber (109), respectively, and a partition plate (108) is provided between the loading and unloading chamber (107) and the test chamber (109) for separating the two, and a loading and unloading clamping assembly (2) is provided on the partition plate (108) in a sealing and rotatable manner, and the loading and unloading clamping assembly (2) is provided with more than two clamping positions; During the rotation of the loading and unloading clamping assembly (2), when one of the clamping positions of the loading and unloading clamping assembly (2) is in the loading and unloading chamber (107), there is always another clamping position of the loading and unloading clamping assembly (2) in the test chamber (109); Two stretching clamping drive assemblies (4) capable of clamping and positioning the material clamped by the upper and lower material clamping assemblies (2) at both ends are arranged in the test chamber (109); a stretching deformation monitoring assembly (3) capable of monitoring the deformation of the material during stretching is arranged between the two stretching clamping drive assemblies (4); and a temperature control and adjustment assembly is arranged in the test chamber (109); The loading and unloading clamping assembly (2) comprises a rotating table (201) having a cylindrical outer contour, the rotating table (201) being axially arranged horizontally and rotatably arranged in a sealed rotating through groove (111) provided on a partition plate (108), one of the axial ends of the rotating table (201) being driven to rotate by a first motor (212) fixedly arranged in the partition plate (108), the outer side of the rotating table (201) being provided with more than two groups of clamping grooves (210) along its circumferential direction, each group comprising two clamping grooves (210) respectively provided at two ends of the rotating table (201), the outer side of the rotating table (201) being provided with an open groove (211) between each group of two clamping grooves (210), two clamping wheels (207) being rotatably arranged in each clamping groove (210), a distance adjustment structure for adjusting the distance between the two clamping wheels (207) being provided between the two clamping wheels (207), and the output end of the digital display control panel (8) being electrically connected to the input end of the first motor (212); The pitch adjustment structure comprises a first slide groove (203) provided in the test machine (1); a wheel groove (213) which is provided on the rotating table (201) between two clamping wheels (207) in the same clamping groove (210) and is connected to the first slide groove (203); a wheel axle (206) is rotatably provided at the central axis of each clamping wheel (207); an angle sensor (209) for detecting the angular displacement between the wheel axle (206) and the clamping wheel (207) is provided in the clamping wheel (207); an axial end of the wheel axle (206) passes through the wheel groove (213) and extends into the first slide groove (203) and is fixedly connected to a wheel seat (205); the wheel seat (205) is slidably provided In the wheel groove (213), two wheel seats (205) on the same side corresponding to each group of clamping grooves (210) are fixedly connected to each other with a connecting rod (204), and a first electric telescopic rod (202) for driving the two connecting rods to move away from or closer to each other is arranged between the two connecting rods (204). The first electric telescopic rod (202) adopts a double-axis electric push rod, and an annular groove (208) is provided on the outer side of each clamping wheel (207) along its circumferential direction, and the cross-sectional shape of the annular groove (208) is V-shaped. The output end of the digital display control panel (8) is electrically connected to the input end of the first electric telescopic rod (202), and the output end of the angle sensor (209) is electrically connected to the input end of the digital display control panel (8).

2. A tensile testing machine for metal material inspection according to claim 1, characterized in that: The test machine (1) is provided with an inlet and outlet (101) capable of connecting a loading and unloading chamber (107) with the outside, a cover (102) is provided at the loading and unloading chamber (107), a pneumatic push rod (103) capable of driving the cover (102) to open and close is provided on the test machine (1), and a first transparent observation window (104) is provided on the cover (102).

3. A tensile testing machine for metal material inspection according to claim 1, characterized in that: The stretching clamping drive assembly (4) comprises a third slide groove (401) provided on the inner bottom surface of the test chamber (109), a third slider (404) being slidably arranged in the third slide groove (401), a second motor (402) being fixedly arranged in the test machine (1) being provided at one end of the third slide groove (401), a lead screw (403) being rotatably arranged in the third slide groove (401), a threaded hole being threadedly connected to the lead screw (403) being provided through the third slider (404), the axial direction of the lead screw (403) being aligned with the sliding direction of the third slider (404) in the third slide groove (401). They are consistent with each other, one end of the lead screw (403) is fixedly connected to the output shaft end of the second motor (402), the upper side of the third slider (404) is fixedly connected to a support rod (405), the upper end of the support rod (405) is provided with a second pneumatic clamp (407), a tension sensor (406) is connected between the support rod (405) and the second pneumatic clamp (407), the output end of the tension sensor (406) is electrically connected to the input end of the digital display control panel (8), and the output end of the digital display control panel (8) is electrically connected to the input ends of the second motor (402) and the second pneumatic clamp (407), respectively.

4. A tensile testing machine for metal material inspection according to claim 1, characterized in that: The tensile deformation monitoring assembly (3) comprises a lifting slide (301) provided on the inner bottom surface of the test chamber (109), a lifting platform (302) being slidably arranged up and down in the lifting slide (301), a second electric telescopic rod (303) for driving the lifting platform (302) to move up and down being fixedly arranged on the inner bottom surface of the test chamber (109), and a clamping distance measuring assembly is respectively arranged on one side of the upper part of the lifting platform (302) close to the tensile clamping driving assembly (4).

5. A tensile testing machine for metal material inspection according to claim 4, characterized in that: The clamping distance measuring assembly comprises first pneumatic clamps (304) respectively slidably arranged on both sides of the upper part of the lifting platform (302), each of the first pneumatic clamps (304) is provided with two first clamping plates (310), each of the first clamping plates (310) is provided with a material radial deformation monitoring structure, a third electric telescopic rod (313) capable of adjusting the distance between the two first pneumatic clamps (304) is fixedly arranged in the lifting platform (302), a second slider (305) is fixedly arranged on the lower side of each first pneumatic clamp (304), the second slider (305) is slidably arranged in a second slide groove (307) opened on the upper side of the lifting platform (302), the third electric telescopic rod (313) adopts a double-axis electric push rod, the two push rod head ends of the third electric telescopic rod (313) respectively slide through the corresponding second slider (305) and are fixedly connected to a stopper (306), the third electric telescopic rod (313) is fixedly arranged in the lifting platform (302), and the second slider (305) is fixedly arranged on the lower side of each first pneumatic clamp (304). The push rod extension direction of the rod (313) is consistent with the sliding direction of the second slider (305) in the second slide groove (307). A first infrared distance measuring generator (308) and a first infrared distance measuring receiver (309) for detecting the distance between each first pneumatic clamp (304) and the lifting platform (302) are provided. One end of more than two guide rods (312) is fixedly connected to a side of the lifting platform (302) close to the first pneumatic clamp (304). The other end of the guide rod (312) is slidably connected to a guide sliding hole provided at a corresponding position of the first pneumatic clamp (304). The output ends of the first infrared distance measuring generator (308) and the first infrared distance measuring receiver (309) are electrically connected to the input end of the digital display control panel (8). The output end of the digital display control panel (8) is electrically connected to the input end of the first pneumatic clamp (304) and the third electric telescopic rod (313), respectively.

6. A tensile testing machine for metal material inspection according to claim 5, characterized in that: The material radial deformation monitoring structure comprises a contact plate (311) arranged on one side opposite to the two first clamping plates (310); one end of a connecting shaft (314) is fixedly connected to one side of the contact plate (311); the other end of the connecting shaft (314) is slidably connected to a connecting sliding hole (318) provided at a corresponding position of the first clamping plate (310); a spring (315) is fixedly connected between the end of the connecting shaft (314) and the inner end surface of the connecting sliding hole (318); a second infrared distance measuring generator (316) and a second infrared distance measuring receiver (317) for detecting the distance between the inner end surface of the connecting sliding hole (318) and the end of the connecting shaft (314) are arranged between the inner end surface of the connecting sliding hole (318) and the end of the connecting shaft (314); the output ends of the second infrared distance measuring generator (316) and the second infrared distance measuring receiver (317) are electrically connected to the input end of the digital display control panel (8).

7. A tensile testing machine for metal material inspection according to claim 1, characterized in that: The temperature control and adjustment component comprises a heater (5) and a refrigerator (6) respectively arranged in a test chamber (109); a temperature sensor (7) is arranged in the test chamber (109); an output end of the temperature sensor (7) is electrically connected to an input end of a digital display control panel (8); and an output end of the digital display control panel (8) is electrically connected to an input end of the heater (5) and a refrigerator (6), respectively.

8. A tensile testing machine for metal material inspection according to claim 1, characterized in that: A second transparent observation window (105) and a rear window are respectively arranged on one side of the test machine (1) close to the test chamber (109), and a rear window cover (110) is arranged at the rear window.

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