Tension testing device for automobile fastener wire material

Abstract

The invention provides a tension testing device for an automobile fastener wire material, and relates to the field of tension testing devices.The tension testing device comprises an indicating assembly, the indicating assembly is composed of a conversion mechanism and a displacement sensor, the testing assembly can achieve tension testing of the automobile fastener wire material, and the displacement sensor can detect the tension of the automobile fastener wire material while the tension of the material is tested; the indicating assembly can monitor the deformation degree of the material in real time, test data are comprehensive and efficient, the indicating assembly can automatically control starting and stopping of the deformation monitoring function according to the test state, and the problems that an existing tension test device for the automobile fastener wire material is single in test effect, and the tensile strength of the automobile fastener wire material is poor due to ductility of the automobile fastener wire material are solved. The problems that an existing tension testing device cannot record and monitor deformation generated by a material during testing, and testing data are not comprehensive enough are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tensile testing devices, and particularly to a tensile testing device for automotive fastener wire materials. Background Art

[0002] Automotive fastener wire is a metal wire used to manufacture automotive fasteners. It usually has characteristics such as high strength, good toughness, and corrosion resistance to meet the usage requirements of automobiles under various complex working conditions. When developing and producing automotive fastener wire, it is necessary to conduct tensile tests on the materials. Through tensile tests, multiple key parameters during material stretching can be obtained to ensure the driving safety of the assembled automobile.

[0003] For the existing tensile testing devices for automotive fastener wire materials, their test items are single. Since automotive fastener wire materials have ductility and will produce obvious elongation deformation when subjected to tensile force, the existing testing devices can only perform basic tensile testing tasks and lack the ability to monitor and record the material deformation process in real time. As a result, the test results are relatively one-sided, unable to comprehensively reflect the mechanical properties of the material under the stressed state, the integrity and accuracy of the test data are affected, and the practicality is not high. Summary of the Invention

[0004] The present invention relates to a tensile testing device for automotive fastener wire materials, which has an indicating component. Among them, the testing component can realize the tensile test of automotive fastener wire materials. While the material is undergoing a tensile test, the indicating component can monitor the deformation degree of the material in real time. The test data is comprehensive and efficient, and the indicating component can automatically control the opening and closing of the deformation monitoring function according to the test state. That is, when the wire is not tensioned and straightened, the deformation monitoring function of the indicating component will not be triggered, avoiding unnecessary data being monitored and affecting the test results. Only when the wire is tensioned and straightened, the deformation monitoring function of the indicating component will be triggered for monitoring and use. It is flexible and convenient to use, with extremely strong flexibility, comprehensiveness, and practicality.

[0005] The invention provides a tensile testing device for automotive fastener wire materials, specifically comprising: a testing component, an indicating component and two wire fixing blocks; the testing component comprises a testing seat, a moving seat, a testing push rod and a linkage seat, the moving seat is plugged into the inside of the testing seat, and the testing push rod is fixedly installed on the side of the testing seat, one end of the push rod of the testing push rod is fixedly installed on the side of the moving seat, and the linkage seat is plugged into the inside of the moving seat; the indicating component is composed of a conversion mechanism and a displacement sensor, and the conversion mechanism comprises a switching seat, a conversion rod, a transmission friction wheel, an active friction wheel and a driving shaft, the switching seat is plugged into the inside of the moving seat, and the conversion rod is rotatably connected to the inside of the switching seat, the transmission friction wheel is plugged into the bottom of the conversion rod, and the active friction wheel is rotatably connected to the inside of the moving seat, the driving shaft is rotatably connected to the inside of the moving seat, and the displacement sensor is fixedly installed on the top of the moving seat, and the driving shaft and the bottom of the active friction wheel are transmission-connected through a gear set; the two wire fixing blocks are respectively fixedly connected to the side of the testing seat and the side of the linkage seat.

[0006] Furthermore, a tensioning top spring is provided on the side of the linkage seat, and two ends of the tensioning top spring are respectively against the side of the linkage seat and the inside of the movable seat.

[0007] Furthermore, the switching seat has an inclined switching groove on its side, and the linkage seat has a switching rod on its side, which is inserted into the switching groove.

[0008] Furthermore, a synchronization rod with a regular polygonal cross section is provided at the bottom of the conversion rod, and a synchronization groove is provided at the top of the transmission friction wheel, and the synchronization rod is inserted into the synchronization groove.

[0009] Furthermore, a transmission top spring is provided at the bottom of the conversion rod, and two ends of the transmission top spring respectively abut against the inside of the conversion rod and the inside of the transmission friction wheel, and the active friction wheel and the transmission friction wheel are coaxially arranged.

[0010] Furthermore, a driving gear is provided on the shaft body of the driving shaft, and a driving rack is provided inside the test seat, and the driving rack and the driving gear are meshed with each other for transmission.

[0011] Furthermore, the conversion mechanism also includes a target seat, which is inserted into the interior of the movable seat and the target seat is inserted into the exterior of the conversion rod.

[0012] Furthermore, a conversion groove is provided on the outside of the conversion rod, and a conversion protrusion is provided on the inside of the target seat, and the conversion protrusion is inserted into the inside of the conversion groove.

[0013] Furthermore, the conversion groove is composed of an avoidance groove arranged along the axial direction of the conversion rod and an action groove arranged spirally, and the top end of the avoidance groove and the bottom end of the action groove are connected.

[0014] The present invention provides a tensile test device for the wire material of automotive fasteners, which has the following beneficial effects: The test component can realize the tensile test of the wire material of automotive fasteners. While the material is undergoing the tensile test, the indicating component can monitor the deformation degree of the material in real time. The test data is comprehensive and efficient, and the indicating component can automatically control the opening and closing of the deformation monitoring function according to the test state. That is, when the wire is not tightened and straightened, the deformation monitoring function of the indicating component will not be triggered, avoiding the monitoring of unnecessary data from affecting the test results. Only when the wire is tightened and straightened, the deformation monitoring function of the indicating component will be triggered for monitoring use. It is flexible and convenient to use, improving the flexibility, comprehensiveness and practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0016] The following drawings in the description only relate to some embodiments of the present invention and do not limit the present invention.

[0017] In the drawings: Figure 1 The structural schematic diagram of the present invention is shown.

[0018] Figure 2 The internal structural schematic diagram of the present invention is shown.

[0019] Figure 3 The present invention is shown Figure 2 The enlarged structural schematic diagram of part A in the present invention.

[0020] Figure 4 The present invention is shown Figure 2 The enlarged structural schematic diagram of part B in the present invention.

[0021] Figure 5 The structural schematic diagram of the test component of the present invention after disassembly is shown.

[0022] Figure 6 The structural schematic diagram of the conversion mechanism of the present invention after disassembly is shown.

[0023] Figure 7 The internal structural schematic diagram of the present invention after the wire material of automotive fasteners is installed on two wire fixing blocks is shown.

[0024] Figure 8 The present invention is shown Figure 7 The internal structural schematic diagram of the present invention after the wire material of automotive fasteners is straightened and tightened is shown.

[0025] Figure 9 The present invention is shown Figure 8 The enlarged structural schematic diagram of part C in the present invention.

[0026] Figure 10 shows the internal structural schematic diagram when the material of the present invention undergoes deformation during the tensile test Figure 8 in it.

[0027] Figure 11 shows the present invention Figure 10 a magnified structural schematic diagram of part D in it.

[0028] List of reference numerals 1. Test assembly; 101. Test base; 1011. Driving rack; 102. Moving seat; 103. Test push rod; 104. Linkage seat; 1041. Tension spring; 1042. Switching rod; 2. Conversion mechanism; 201. Switching seat; 2011. Switching groove; 202. Conversion rod; 2021. Synchronizing rod; 2022. Driving spring; 223. Conversion groove; 2231. Avoidance groove; 2232. Action groove; 203. Driving friction wheel; 2031. Synchronizing groove; 204. Driving friction wheel; 205. Driving shaft; 2051. Driving gear; 206. Target seat; 2061. Conversion protrusion; 3. Wire fixing block; 4. Displacement sensor. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0030] Please refer to Figures 1 to 11 : Embodiment 1: The present invention provides a tensile test device for automotive fastener wire materials, including: a test assembly 1, an indicating assembly, and two wire fixing blocks 3; the test assembly 1 includes a test base 101, a moving seat 102, a test push rod 103, and a linkage seat 104. The moving seat 102 is inserted into the inside of the test base 101, and the test push rod 103 is fixedly installed on the side of the test base 101. One end of the push rod of the test push rod 103 is fixedly installed on the side of the moving seat 102, and the linkage seat 104 is inserted into the inside of the moving seat 102; The indicating component consists of a conversion mechanism 2 and a displacement sensor 4. The conversion mechanism 2 includes a switching seat 201, a conversion rod 202, a driving friction wheel 203, a driving friction wheel 204, and a driving shaft 205. The switching seat 201 is inserted into the interior of the moving seat 102, and the conversion rod 202 is rotatably connected to the interior of the switching seat 201. The driving friction wheel 203 is inserted into the bottom of the conversion rod 202, and the driving friction wheel 204 is rotatably connected to the interior of the moving seat 102. The driving shaft 205 is rotatably connected to the interior of the moving seat 102, and the displacement sensor 4 is fixedly installed on the top of the moving seat 102. The bottom of the driving shaft 205 and the driving friction wheel 204 are connected by a gear set; two wire fixing blocks 3 are respectively fixedly connected to the side surface of the test seat 101 and the side surface of the linkage seat 104; The conversion mechanism 2 further includes a target seat 206. The target seat 206 is inserted into the interior of the moving seat 102, and the target seat 206 is inserted outside the conversion rod 202. The test component 1 can realize the tensile test function of the wire material of the automotive fastener. By the test push rod 103, the moving seat 102 can be driven to move inside the test seat 101, thereby changing the use distance between the two wire fixing blocks 3. After the two ends of the wire material of the automotive fastener are respectively fixed inside the wire fixing blocks 3, the tensile test of the wire material of the automotive fastener can be realized by controlling the two wire fixing blocks 3 to move away from each other. During the test, the test push rod 103 can monitor the force change, thereby realizing the tensile test function. It is flexible and convenient to use. The indicating component can monitor the deformation (length) change of the wire material of the automotive fastener when the test component 1 conducts a tensile test on the wire material of the automotive fastener, and the deformation monitoring function of the indicating component will only be triggered after the wire material of the automotive fastener is pulled to be taut, ensuring the accuracy of the measurement data and stable use.

[0031] Among them, a tension spring 1041 is provided on the side of the linkage seat 104, and both ends of the tension spring 1041 are respectively abutted against the side of the linkage seat 104 and the inside of the moving seat 102. During use, when the wire material of the automotive fastener is not tensioned and straightened, at this time, under the action of the tension spring 1041, the linkage seat 104 is in a state hidden inside the moving seat 102. Synchronously, the switching seat 201 can position the use positions of the conversion rod 202 and the driving friction wheel 203, so that the driving friction wheel 203 and the driving friction wheel 204 are in a separated state. A driving gear 2051 is provided on the shaft body of the driving shaft 205, and a driving rack 1011 is provided inside the test seat 101. The teeth of the driving rack 1011 and the driving gear 2051 are meshed and driven. At this time, when the moving seat 102 moves to change the use position, although the driving rack 1011 can drive the driving shaft 205 and the driving friction wheel 204 to rotate through the driving gear 2051, because the driving friction wheel 203 and the driving friction wheel 204 are in a separated state, so at this time, even if the moving seat 102 is in a moving preparation state, the use displacement of the target seat 206 will not change, so the displacement sensor 4 will not detect a change in displacement data, and thus will not trigger the deformation monitoring function of the indicating component, which is flexible and convenient to use.

[0032] Among them, a switching groove 2011 is provided on the side of the switching seat 201 in an inclined manner, and a switching rod 1042 is provided on the side of the linkage seat 104. The switching rod 1042 is inserted into the switching groove 2011. A transmission spring 2022 is provided at the bottom of the conversion rod 202, and both ends of the transmission spring 2022 are respectively abutted against the inside of the conversion rod 202 and the inside of the driving friction wheel 203. The driving friction wheel 204 and the driving friction wheel 203 are coaxially arranged. During use, when the wire material of the automotive fastener is tensioned and straightened for a tensile test, the indicating component can automatically trigger the deformation monitoring function to monitor and record the deformation data generated by the wire material of the automotive fastener during the tensile test. After the wire material of the automotive fastener is tensioned and straightened, at this time, the tension spring 1041 is compressed to provide a tension force for the material, and the linkage seat 104 will protrude outwards. When the linkage seat 104 protrudes, the switching rod 1042 can drive the switching seat 201 to move downwards through the switching groove 2011, so as to abut the driving friction wheel 203 against the driving friction wheel 204. During this process, the transmission spring 2022 will be compressed to provide a frictional transmission pressure between the driving friction wheel 203 and the driving friction wheel 204, ensuring stable transmission between the driving friction wheel 203 and the driving friction wheel 204. At the same time, the conversion protrusion 2061 will also move from the bottom end of the avoidance groove 2231 to the position where the avoidance groove 2231 and the action groove 2232 are connected. Among them, a conversion groove 223 is provided on the outside of the conversion rod 202, and a conversion protrusion 2061 is provided inside the target seat 206. The conversion protrusion 2061 is inserted into the conversion groove 223. The conversion groove 223 is composed of an avoidance groove 2231 arranged along the axial direction of the conversion rod 202 and an action groove 2232 arranged in a spiral shape. The top end of the groove body of the avoidance groove 2231 is connected to the bottom end of the groove body of the action groove 2232. During use, when the material is subjected to a tensile test thereafter, if the material does not deform, the position of the moving seat 102 inside the test seat 101 will not change either. When the material deforms, the moving seat 102 will move inside the test seat 101. When the moving seat 102 moves, it can drive the rack 1011 to drive the drive shaft 205 to rotate through the drive gear 2051. When the drive shaft 205 rotates, it can drive the active friction wheel 204 to rotate through the gear set. When the active friction wheel 204 rotates, it can drive the transmission friction wheel 203 to rotate through friction transmission. A synchronous rod 2021 with a regular polygon cross-section is provided at the bottom of the conversion rod 202, and a synchronous groove 2031 is provided at the top of the transmission friction wheel 203. The synchronous rod 2021 is inserted into the synchronous groove 2031. When the transmission friction wheel 203 rotates, the synchronous groove 2031 can drive the conversion rod 202 to rotate through the synchronous rod 2021. When the conversion rod 202 rotates, the action groove 2232 can drive the target seat 206 to move upward through the conversion protrusion 2061. After the displacement sensor 4 detects a change in the displacement of the target seat 206, it can automatically record the data, so as to monitor and record the deformation data of the material in real time. The measurement result is comprehensive. After a single test is completed, after the test push rod 103 drives the moving seat 102 to move to relieve the test force on the material, and the material is removed and then under the action of the tension spring 1041, the indicating component can automatically restore the state where the transmission friction wheel 203 and the active friction wheel 204 are separated from each other, and the target seat 206 will also reset under its own weight so that the conversion protrusion 2061 can re-enter the bottom end of the avoidance groove 2231 for continued testing next time.

[0033] Specific usage method and function of this embodiment: In the present invention, the test component 1 can realize the tensile test function of the wire material of automotive fasteners. Through the test push rod 103, the moving seat 102 can be driven to move inside the test seat 101, thereby changing the use distance between the two wire fixing blocks 3. After fixing the two ends of the wire material of automotive fasteners inside the wire fixing blocks 3 respectively, the tensile test of the wire material of automotive fasteners can be realized by controlling the two wire fixing blocks 3 to move away from each other. During the test, the test push rod 103 can monitor the force change, thereby realizing the tensile test function, which is flexible and convenient to use. The indicating component can monitor the deformation (length) change of the wire material of automotive fasteners when the test component 1 conducts a tensile test on the wire material of automotive fasteners, and the deformation monitoring function of the indicating component will only be triggered after the wire material of automotive fasteners is pulled to be taut. When the wire material of automotive fasteners is not taut and straightened, at this time, under the action of the tension spring 1041, the linkage seat 104 is in a state hidden inside the moving seat 102. Synchronously, the switching seat 201 can position the conversion rod 202 and the driving friction wheel 203, so that the driving friction wheel 203 and the driving friction wheel 204 are in a separated state from each other. Therefore, when the moving seat 102 moves to change its use position at this time, although the driving rack 1011 can drive the driving shaft 205 and the driving friction wheel 204 to rotate through the driving gear 2051, since the driving friction wheel 203 and the driving friction wheel 204 are in a separated state from each other, so even if the moving seat 102 is in a moving preparation state at this time, the use displacement of the target seat 206 will not change, and thus the displacement sensor 4 will not monitor the change of displacement data, and thus the deformation monitoring function of the indicating component will not be triggered. When the wire material of automotive fasteners is taut and straightened for tensile test, the indicating component can automatically trigger the deformation monitoring function to monitor and record the deformation data generated by the wire material of automotive fasteners during the tensile test. After the wire material of automotive fasteners is taut and straightened, at this time, the tension spring 1041 is compressed to provide a tension force for the material, and the linkage seat 104 will extend outwards. When the linkage seat 104 extends out, the switching rod 1042 can drive the switching seat 201 to move downward through the switching groove 2011, so as to press the driving friction wheel 203 against the driving friction wheel 204. During this process, the driving spring 2022 will be compressed to provide the pressure for frictional transmission between the driving friction wheel 203 and the driving friction wheel 204, ensuring stable transmission between the driving friction wheel 203 and the driving friction wheel 204. At the same time, the conversion protrusion 2061 will also move from the bottom end of the avoidance groove 2231 to the groove connection position of the avoidance groove 2231 and the action groove 2232. After that, when the material is subjected to tensile test, if the material does not deform, the position of the moving seat 102 inside the test seat 101 will not change either. When the material deforms, the moving seat 102 will move inside the test seat 101.When the moving seat 102 moves, the driving rack 1011 can drive the driving gear 2051 to drive the driving shaft 205 to rotate. When the driving shaft 205 rotates, it can drive the driving friction wheel 204 to rotate through the gear set. When the driving friction wheel 204 rotates, it can drive the driven friction wheel 203 to rotate through friction transmission. When the driven friction wheel 203 rotates, the synchronous groove 2031 can drive the conversion rod 202 to rotate through the synchronous rod 2021. When the conversion rod 202 rotates, the action groove 2232 can drive the target seat 206 to move upward through the conversion protrusion 2061. After the displacement sensor 4 detects a displacement change of the target seat 206, it can automatically record data, so as to monitor and record the deformation data of the material in real time. After a single test is completed, after the test push rod 103 drives the moving seat 102 to move to relieve the test force on the material, and the material is removed, under the action of the tension spring 1041, the indicating component can automatically restore the separated state between the driven friction wheel 203 and the driving friction wheel 204, and the target seat 206 will also reset under its own weight, so that the conversion protrusion 2061 can re-enter the bottom of the avoidance groove 2231 for the next test.

[0034] In another embodiment, a reset spring is provided at the top of the target seat 206, and the two ends of the reset spring respectively abut against the top of the target seat 206 and the inside of the moving seat 102, and the elastic force of the reset spring is less than the elastic force of the transmission spring 2022. This design enables the target seat 206 to smoothly move down and reset under the combined action of the reset spring and the self-weight of the target seat 206 after a single test is completed and the automotive fastener wire material is removed, so as to be used for the next test, further improving the flexibility and stability of the device.

Claims

1. A tensile testing device for automotive fastener wire materials, characterized in that: include: A test assembly (1), an indication assembly and two wire fixing blocks (3); the test assembly (1) comprises a test seat (101), a movable seat (102), a test push rod (103) and a linkage seat (104); the movable seat (102) is plugged into the interior of the test seat (101), and the test push rod (103) is fixedly mounted on the side of the test seat (101); one end of the push rod of the test push rod (103) is fixedly mounted on the side of the movable seat (102), and the linkage seat (104) is plugged into the interior of the movable seat (102); the indication assembly is composed of a conversion mechanism (2) and a displacement sensor (4); and the conversion mechanism (2) comprises a switching seat (201), a conversion rod (202), a transmission friction wheel (203), an active friction The switching seat (201) is inserted into the interior of the moving seat (102), and the conversion rod (202) is rotatably connected to the interior of the switching seat (201), the transmission friction wheel (203) is inserted into the bottom of the conversion rod (202), and the active friction wheel (204) is rotatably connected to the interior of the moving seat (102), the driving shaft (205) is rotatably connected to the interior of the moving seat (102), and the displacement sensor (4) is fixedly mounted on the top of the moving seat (102), and the bottom of the driving shaft (205) and the active friction wheel (204) are connected through a gear set; the two wire fixing blocks (3) are respectively fixedly connected to the side of the test seat (101) and the side of the linkage seat (104).

2. A tensile testing device for automotive fastener wire material according to claim 1, characterized in that: A tensioning top spring (1041) is provided on the side of the linkage seat (104), and two ends of the tensioning top spring (1041) respectively abut against the side of the linkage seat (104) and the inside of the movable seat (102).

3. A tensile testing device for automotive fastener wire material according to claim 2, characterized in that: The switching seat (201) has an inclined switching groove (2011) on its side, and the linkage seat (104) has a switching rod (1042) on its side, the switching rod (1042) being inserted into the switching groove (2011).

4. A tensile testing device for automotive fastener wire material according to claim 3, characterized in that: A synchronization rod (2021) having a regular polygonal cross section is provided at the bottom of the conversion rod (202), and a synchronization groove (2031) is provided at the top of the transmission friction wheel (203), and the synchronization rod (221) is inserted into the synchronization groove (2031).

5. A tensile testing device for automotive fastener wire material according to claim 4, characterized in that: A transmission top spring (2022) is provided at the bottom of the conversion rod (202), and two ends of the transmission top spring (2022) respectively abut against the inside of the conversion rod (202) and the inside of the transmission friction wheel (203), and the active friction wheel (204) and the transmission friction wheel (203) are coaxially arranged.

6. A tensile testing device for automotive fastener wire material according to claim 5, characterized in that: A driving gear (2051) is provided on the shaft body of the driving shaft (205), and a driving rack (1011) is provided inside the test seat (101), and the driving rack (1011) and the driving gear (2051) are meshed and driven.

7. A tensile testing device for automotive fastener wire material according to claim 6, characterized in that: The conversion mechanism (2) further comprises a target seat (206), wherein the target seat (206) is plugged into the interior of the movable seat (102), and the target seat (206) is plugged into the exterior of the conversion rod (202).

8. A tensile testing device for automotive fastener wire material according to claim 7, characterized in that: The conversion rod (202) is provided with a conversion groove (223) on the outside, and the target seat (206) is provided with a conversion protrusion (2061) on the inside, and the conversion protrusion (2061) is inserted into the inside of the conversion groove (223).

9. A tensile testing device for automotive fastener wire material according to claim 8, characterized in that: The conversion groove (223) is composed of an avoidance groove (2231) arranged along the axial direction of the conversion rod (202) and an action groove (2232) arranged in a spiral manner, and the top end of the groove body of the avoidance groove (2231) is connected to the bottom end of the groove body of the action groove (2232).

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