Automobile wire harness terminal tension testing device and detection method thereof

Abstract

The application relates to the technical field of mechanical sensors, and discloses a kind of automobile wire harness terminal tension testing device and its detection method, including test table, test table two sides are respectively provided with transport table and conveying table, transmission device is arranged between transport table and conveying table, detection device is arranged on conveying table, fixed part is arranged on conveying table, transmission device includes rotating part and clamping part, detection device includes rotating part, clamping jaw arranged around rotating part, adjusting part for controlling the displacement of clamping jaw, tension sensor and storage box.The application is provided with transmission part, and the wire harness is transported individually, and the wire harness is tensioned, and the middle part of the wire harness is fixed by the setting of the fixed part, the wire part of the wire harness is in an unfixed state, the tension part applied by the tension machine is borne by the wire, so that the tension testing instrument applies the maximum tension value to the wire harness, and the tension detection result between the wire harness and the terminal is not accurate.

Description

Technical Field

[0001] This invention relates to the field of mechanical sensor technology, specifically to a tensile testing device and testing method for automotive wiring harness terminals. Background Technology

[0002] A wire harness tensile tester is a device used to test the pull-out and peel forces of wire harnesses, terminals, plugs, and other products. It is suitable for material mechanical property testing in industries such as building materials, aerospace, machinery manufacturing, and automobile manufacturing. It supports various test types such as tensile, compression, bending, shear, and bursting, and can test tensile strength and deformation rate, breaking force, tear resistance, heat seal strength, roller peel test, 90-degree peel, 180-degree peel, rope breaking force, and trouser tear force. The tensile tester applies axial tensile force to the connection between the terminal and the wire until the applied tensile force reaches the maximum value. If the connection between the terminal and the wire is not broken or damaged, it is a qualified product; otherwise, it is a defective product.

[0003] Conventional tensile testing instruments require manual placement of the wire harness on the tensile testing machine, which then applies tension directly to the connection between the two ends of the wire harness and the terminals. The wire conductors of the wire harness are not fixed in place, and the tension applied by the tensile testing machine is borne by the conductors. Therefore, after the tensile testing instrument applies the maximum tensile force to the wire harness, the tensile test result between the wire harness and the terminals is not accurate. Furthermore, manually operated tensile testing instruments are difficult to perform continuous wire harness testing and wire harness classification and collection. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A tensile testing device for automotive wiring harness terminals includes a test platform, on which a transport platform and a conveying platform are respectively arranged on both sides. A transmission device is arranged between the transport platform and the conveying platform. A detection device is arranged on the conveying platform. A fixing component is arranged on the conveying platform. The detection device cooperates with the fixing component.

[0006] The transmission device includes a rotating component and a clamping component. The transport platform is located on one side and slightly below the clamping component. The transport platform transports the wire harness onto the clamping component. The clamping component clamps and tightens the wire harness. The rotating component transports the clamped wire harness to one side of the conveying platform.

[0007] The fixing component secures the clamped wire harness, ensuring that the terminals at both ends of the wire harness are located on either side of the fixing component. The conveyor platform transports the fixing component and the wire harness to the bottom of the testing device. The testing device includes a rotating component, grippers located around the rotating component, an adjusting component for controlling the displacement of the grippers, a tension sensor, and a storage box. The adjusting component moves the grippers onto the fixing component, positioning the two grippers at the connection points between the wire harness and the terminals. The adjusting component also moves the two grippers to the sides. The tension sensor detects the wire harness and stores any defective wire harnesses in the storage box. The conveyor platform and the fixing component then transport any qualified wire harnesses.

[0008] Preferably, the transport platform includes a transport belt, and transport rollers are rotatably connected to both sides of the test platform via bearings. The transport belt is sleeved on the transport rollers. Two first gears are rotatably connected to the test platform via bearings. One of the first gears is fixedly connected to one end of one of the transport rollers. A first motor is fixedly connected to the test platform. The output end of the first motor is fixedly connected to the other first gear. A first toothed belt that meshes with the first gear is sleeved on the outer periphery of the two first gears.

[0009] Preferably, the conveyor platform includes a conveyor belt, and conveyor rollers are rotatably connected to both sides of the test platform via bearings. The conveyor belt is sleeved on the conveyor rollers. Two second gears are rotatably connected to the test platform via bearings. One of the second gears is fixedly connected to one end of one of the conveyor rollers. A second motor is fixedly connected to the test platform. The output end of the second motor is fixedly connected to the other second gear. A second toothed belt that meshes with the second gears is sleeved on the outer periphery of the two second gears. A plurality of fixing components are evenly fixedly installed on the conveyor belt.

[0010] Preferably, the rotating component includes a rectangular platform, with fixed rods fixedly connected to both ends of the rectangular platform. The fixed rods are rotatably connected to the test platform via bearings at both ends. Two third gears are rotatably connected to the test platform via bearings. A third motor is fixedly connected to the test platform. The third motor is fixedly connected to one of the third gears. The other third gear is fixedly installed on the outer periphery of the fixed rod. A third toothed belt that meshes with the third gear is sleeved on the outer periphery of the two third gears.

[0011] Preferably, the clamping member includes a movable plate, and fixed plates are fixedly connected to both ends of one side of the rectangular platform. A sliding groove is provided on the fixed plate, and both ends of the movable plate are slidably disposed in the sliding groove. An inner groove is provided on one side of the rectangular platform, and a first cylinder is fixedly connected in the inner groove. The output end of the first cylinder is fixedly connected to one side of the movable plate.

[0012] Preferably, the clamping component further includes a pair of clamping plates. A sliding groove is provided on one side of the movable plate, and rectangular blocks are slidably arranged on both sides of the sliding groove. A first bidirectional screw is rotatably connected to the sliding groove through a bearing. The two rectangular blocks are respectively located at both ends of the first bidirectional screw and are threadedly connected to the first bidirectional screw. A fourth motor is fixedly connected to one side of the movable plate, and the output end of the fourth motor is fixedly connected to one end of the first bidirectional screw. A vertical groove is provided on one side of the rectangular block, and the two clamping plates are slidably arranged at both ends of the vertical groove. A second bidirectional screw is rotatably connected to the vertical groove through a bearing. The two clamping plates are respectively located at both ends of the second bidirectional screw and are threadedly connected to the second bidirectional screw. A fifth motor is fixedly connected to the top of the rectangular block, and the output end of the fifth motor is fixedly connected to one end of the second bidirectional screw.

[0013] Preferably, the fixing component includes a pair of clamping plates, and multiple fixing platforms are evenly and fixedly connected on the conveyor belt. A guide groove is opened on the fixing platform, and the two clamping plates are slidably disposed at both ends of the guide groove. A third bidirectional screw is rotatably connected in the guide groove through a bearing. The two clamping plates are located at both ends of the third bidirectional screw and are threadedly connected to the third bidirectional screw. A sixth motor is fixedly connected to the fixing platform, and the output end of the sixth motor is fixedly connected to the third bidirectional screw. A collection bin is fixedly connected to the bottom of the test platform.

[0014] Preferably, the rotating component includes a rotating platform, two vertical plates are fixedly connected to the testing platform, and connecting rods are fixedly connected to both ends of the rotating platform. The connecting rods are rotatably connected to the vertical plates through bearings. A seventh motor is fixedly connected to one side of the vertical plate, and the output end of the seventh motor is fixedly connected to one end of the connecting rod.

[0015] Preferably, the adjusting component includes a moving rod, and the surface of the rotating table has multiple guide grooves. Two moving rods are respectively located at both ends of the guide grooves and are slidably connected to the rotating table. A fourth bidirectional screw is rotatably connected to the guide grooves via bearings. The moving rods are threadedly connected to the fourth bidirectional screw. A servo motor is fixedly connected to one side of the rotating table, and the output end of the servo motor is fixedly connected to one end of the fourth bidirectional screw. The storage box is fixedly connected to the rotating table, and two moving rods are respectively located on both sides of the storage box. A limit groove is formed at the bottom end of the moving rod, and a hinge seat is provided at the bottom end of the moving rod. A limiting rod is fixedly connected to the top of the hinge seat, and the limiting rod is slidably disposed in the limiting groove. A second cylinder is fixedly connected to one side of the moving rod, and the output end of the second cylinder is fixedly connected to the hinge seat. A hinge block is hinged to the bottom of the hinge seat. An eighth motor is fixedly connected to one side of the hinge seat, and the output end of the eighth motor is fixedly connected to the hinge block. The gripper is fixedly installed at the bottom of the hinge block. The tension sensor is fixedly installed on one side of the gripper. A clamping plate is fixedly connected to the other side of the gripper. Two baffles are hinged at the opening of the storage box, and the two baffles are rotatably connected to the storage box through a torsion spring.

[0016] A testing method using an automotive wiring harness terminal tensile testing device, comprising the following steps:

[0017] The wire harness is placed on the transport table, which moves the harness forward. When the harness reaches the clamping component, the clamping component moves towards the harness and grips it. After gripping the harness, the rotating component moves, causing the clamping component and the harness to rotate towards the transport table. During rotation, the clamping component moves the two ends of the harness to the sides, keeping the middle of the harness taut. When the rotating component moves the clamping component to the side of the fixing component, the clamping component moves the taut harness towards the fixing component. The fixing component clamps and secures the middle of the harness, leaving space between the harness and the terminal. Then, the transport table moves the fixing component and the harness towards... Moving forward, once the fixing component and wire harness have moved to the bottom of the testing device, the adjusting component moves the gripper downwards, gripping both sides of the wire harness to position the wire harness and terminal within the gripper. Then, the adjusting component moves the two grippers to the sides respectively, performing a tensile test on the position between the wire harness and terminal. A tensile sensor is used to detect the tensile force on the wire harness terminal. When the wire harness is qualified, it is transported via the conveyor and fixing component. When the limit is not met, the rotating component moves the adjusting component and gripper upwards, collecting the unqualified wire harness into the collection box, thus classifying and collecting the wire harnesses.

[0018] Compared with the prior art, the present invention provides an automotive wiring harness terminal tensile testing device and its testing method, which has the following beneficial effects:

[0019] 1. A tensile testing device and method for automotive wiring harness terminals, comprising a transmission component for individual transport and tensioning of the wiring harness, a fixing component for securing the middle portion of the wiring harness, a clamp for gripping the connection between the wiring harness and the terminal, and an adjustment component and a tensile sensor for applying maximum tensile force to the connection between the wiring harness and the terminal to determine the qualification of the wiring harness. This method solves the problem that when the wire portion of the wiring harness is not fixed, the tensile force applied by the tensile testing machine is borne by the wire portion, resulting in inaccurate tensile force test results between the wiring harness and the terminal after the tensile testing machine applies maximum tensile force to the wiring harness.

[0020] 2. A tensile testing device and method for automotive wiring harness terminals, which achieves continuous conveying of the wiring harness through the setting of a transport table and a conveyor platform. The transmission device avoids the problem of multiple wiring harnesses being mixed together, preventing the testing device from failing to test individual wiring harnesses. Through the cooperation between the rotating and adjusting components, and between the fixing component and the conveyor platform, when the wiring harness is qualified, the gripper releases the wiring harness, and the conveyor platform transports the wiring harness to the collection bin. When the wiring harness is unqualified, the fixing component releases the wiring harness, and the rotating component ensures that the wiring harness remains on the gripper. When the gripper holding the wiring harness rotates to directly above the rotating platform, the gripper rotates towards the collection box, collecting the wiring harness in the gripper into the collection box, thereby achieving the purpose of classifying and collecting the wiring harness. This solves the problem that manually operated tensile testing instruments cannot achieve continuous wiring harness testing and classified collection functions. Attached Figure Description

[0021] Figure 1 This is one of the overall structural schematic diagrams of the present invention;

[0022] Figure 2 This is the second schematic diagram of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the transport platform and conveyor platform structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of section A;

[0025] Figure 5 This is a schematic diagram of the rotating component structure of the present invention;

[0026] Figure 6 For the present invention Figure 5 Schematic diagram of section B in the middle;

[0027] Figure 7 This is a schematic diagram of the clamping and fixing components of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of the C-section structure;

[0029] Figure 9 For the present invention Figure 7 Schematic diagram of the middle D section structure;

[0030] Figure 10 This is a schematic diagram of the detection device of the present invention;

[0031] Figure 11 For the present invention Figure 10 Schematic diagram of the structure of section E in the middle.

[0032] In the diagram: 1. Test bench; 2. Transport bench; 3. Conveyor; 4. Transmission device; 5. Detection device; 6. Fixing component; 41. Rotating component; 42. Clamping component; 51. Rotating component; 52. Gripper; 53. Adjusting component; 54. Tension sensor; 55. Storage box; 21. Conveyor belt; 22. Conveyor roller; 23. First gear; 24. First motor; 25. First toothed belt; 31. Conveyor belt; 32. Conveyor roller; 33. Second gear; 34. Second motor; 35. Second toothed belt; 411. Rectangular platform; 412. Fixed rod; 413. Third gear; 414. Third motor; 415. Third toothed belt; 421. Moving plate; 422. Fixed plate; 423. First cylinder; 424. Clamping plate ; 425, Sliding groove; 426, Rectangular block; 427, First bidirectional screw; 428, Fourth motor; 429, Vertical groove; 430, Second bidirectional screw; 431, Fifth motor; 61, Clamping plate; 62, Fixed platform; 63, Guide groove; 64, Third bidirectional screw; 65, Sixth motor; 7, Collection bin; 511, Rotary table; 512, Vertical plate; 513, Connecting rod; 514, Seventh motor; 531, Moving rod; 532, Guide groove; 533, Fourth bidirectional screw; 534, Servo motor; 535, Limiting groove; 536, Hinge seat; 537, Limiting rod; 538, Second cylinder; 539, Hinge block; 530, Eighth motor; 5311, Card plate; 551, Baffle. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an automotive wiring harness terminal tensile testing device and its testing method.

[0035] Example 1:

[0036] Please see Figures 1-11 A tensile testing device for automotive wiring harness terminals includes a test bench 1, a transport platform 2 and a conveying platform 3 respectively arranged on both sides of the test bench 1, a transmission device 4 arranged between the transport platform 2 and the conveying platform 3, a detection device 5 arranged on the conveying platform 3, and a fixing member 6 arranged on the conveying platform 3. The detection device 5 cooperates with the fixing member 6.

[0037] The transmission device 4 includes a rotating component 41 and a clamping component 42. The transport table 2 is located on one side and slightly below the clamping component 42. The transport table 2 transports the wire harness to the clamping component 42, the clamping component 42 clamps and tightens the wire harness, and the rotating component 41 transports the clamped wire harness to one side of the conveyor table 3.

[0038] The fixing member 6 secures the clamped wire harness, ensuring that the terminals at both ends of the wire harness are located on both sides of the fixing member 6. The conveyor 3 transports the fixing member 6 and the wire harness to the bottom of the detection device 5. The detection device 5 includes a rotating member 51, grippers 52 arranged around the rotating member 51, an adjusting member 53 for controlling the displacement of the grippers 52, a tension sensor 54, and a storage box 55. The adjusting member 53 moves the grippers 52 onto the fixing member 6, so that the two grippers 52 are respectively located at the connection between the wire harness and the terminal. The adjusting member 53 moves the two grippers 52 to both sides. The tension sensor 54 detects the wire harness and stores unqualified wire harnesses into the storage box 55. The conveyor 3 and the fixing member 6 transport qualified wire harnesses.

[0039] Specifically, the wire harness is placed on the transport table 2, which moves the wire harness forward. When the wire harness reaches the clamping member 42, the clamping member 42 moves towards the wire harness and grips it. After gripping the wire harness, the rotating member 41 rotates and drives the clamping member 42 and the wire harness to rotate towards the transport table 3. During rotation, the clamping member 42 moves both ends of the wire harness to the sides, so that the middle of the wire harness is in a taut state. When the rotating member 41 moves the clamping member 42 to the side of the fixing member 6, the clamping member 42 moves the wire harness, which is in a taut state in the middle, towards the fixing member 6. The fixing member 6 clamps and fixes the entire middle of the wire harness, leaving space between the wire harness and the terminal. Then, the transport table 3 moves the fixing member 6 and the wire harness... The wire harness moves forward. When the fixing member 6 and the wire harness move to the bottom of the detection device 5, the adjusting member 53 drives the gripper 52 to move downward. The gripper 52 grasps both sides of the wire harness, so that the position between the wire harness and the terminal is in the gripper 52. Then, the adjusting member 53 drives the two grippers 52 to move to both sides respectively, so as to perform a tensile test on the position between the wire harness and the terminal. The tensile force sensor 54 is set to detect the tensile force of the wire harness terminal. When the wire harness is qualified, the qualified wire harness is transported by the conveyor table 3 and the fixing member 6. When the limit is not qualified, the rotating member 51 drives the adjusting member 53 and the gripper 52 to rotate upward, and the unqualified wire harness is collected into the collection box 55, so as to classify and collect the wire harness.

[0040] The transmission mechanism allows for individual transport and tensioning of the wire harness. The fixing element 6 secures the middle section of the wire harness. The clamp 52 holds the connection between the wire harness and the terminal. The adjusting element 53 and the tension sensor 54 apply maximum tension to the connection, determining the wire harness's suitability. This solves the problem that when the wire harness's conductor is unsecured, the tension applied by the tensile testing machine is borne by the conductor, resulting in inaccurate tension test results when the maximum tension is applied.

[0041] Example 2:

[0042] See Figures 1-11 The transport platform 2 includes a transport belt 21. The test platform 1 has two transport rollers 22 rotatably connected to both sides via bearings. The transport belt 21 is fitted onto the transport rollers 22. The test platform 1 has two first gears 23 rotatably connected via bearings. One of the first gears 23 is fixedly connected to one end of one of the transport rollers 22. The test platform 1 has a first motor 24 fixedly connected to it. The output end of the first motor 24 is fixedly connected to the other first gear 23. The outer periphery of the two first gears 23 is fitted with a first toothed belt 25 that meshes with the first gear 23.

[0043] The conveyor platform 3 includes a conveyor belt 31. The test platform 1 has conveyor rollers 32 rotatably connected to both sides via bearings. The conveyor belt 31 is fitted onto the conveyor rollers 32. The test platform 1 has two second gears 33 rotatably connected via bearings. One of the second gears 33 is fixedly connected to one end of one of the conveyor rollers 32. The test platform 1 has a second motor 34 fixedly connected. The output end of the second motor 34 is fixedly connected to the other second gear 33. The outer periphery of the two second gears 33 is fitted with a second toothed belt 35 that meshes with the second gears 33. Multiple fixing parts 6 are evenly fixedly installed on the conveyor belt 31.

[0044] Specifically, the first motor 24 drives one of the first gears 23 to rotate. Through the meshing connection between the two first gears 23 and the first toothed belt 25, it drives the other first gear 23 to rotate, thereby driving the transport roller 22 to rotate. Through the arrangement of the transport belt 21 sleeved on the transport roller 22, it drives the transport belt 21 to rotate, thereby transporting the wire harness through the transport belt 21. The second motor 34 drives one of the second gears 33 to rotate. Through the meshing connection between the two second gears 33 and the second toothed belt 35, it drives the other second gear 33 to rotate, thereby driving the transport roller 32 to rotate. Through the arrangement of the transport belt 31 sleeved on the transport roller 32, it drives the transport belt 31 to rotate, thereby driving the fixed member 6 to move through the transport belt 31.

[0045] Example 3:

[0046] See Figures 1-11 The rotating component 41 includes a rectangular platform 411, with fixed rods 412 fixedly connected to both ends of the rectangular platform 411. The fixed rods 412 are rotatably connected to the test platform 1 through bearings. Two third gears 413 are rotatably connected to the test platform 1 through bearings. A third motor 414 is fixedly connected to the test platform 1. The third motor 414 is fixedly connected to one of the third gears 413. The other third gear 413 is fixedly installed on the outer periphery of the fixed rod 412. A third toothed belt 415 is sleeved on the outer periphery of the two third gears 413 and meshes with the third gear 413.

[0047] The clamping member 42 includes a movable plate 421. Fixed plates 422 are fixedly connected to both ends of one side of the rectangular platform 411. Slide grooves are provided on the fixed plates 422. Both ends of the movable plate 421 are slidably disposed in the slide grooves. An inner groove is provided on one side of the rectangular platform 411. A first cylinder 423 is fixedly connected in the inner groove. The output end of the first cylinder 423 is fixedly connected to one side of the movable plate 421.

[0048] The clamping member 42 also includes a pair of clamping plates 424. A sliding groove 425 is provided on one side of the moving plate 421. Rectangular blocks 426 are slidably arranged on both sides of the sliding groove 425. A first bidirectional screw 427 is rotatably connected to the sliding groove 425 through a bearing. The two rectangular blocks 426 are respectively located at both ends of the first bidirectional screw 427 and are threadedly connected to the first bidirectional screw 427. A fourth motor 428 is fixedly connected to one side of the moving plate 421. The output end of the fourth motor 428 is fixedly connected to one end of the first bidirectional screw 427. A vertical groove 429 is provided on one side of the rectangular block 426. The two clamping plates 424 are slidably arranged at both ends of the vertical groove 429. A second bidirectional screw 430 is rotatably connected to the vertical groove 429 through a bearing. The two clamping plates 424 are respectively located at both ends of the second bidirectional screw 430 and are threadedly connected to the second bidirectional screw 430. A fifth motor 431 is fixedly connected to the top of the rectangular block 426. The output end of the fifth motor 431 is fixedly connected to one end of the second bidirectional screw 430.

[0049] The fixing component 6 includes a pair of clamping plates 61. Multiple fixed platforms 62 are evenly fixedly connected on the conveyor belt 31. Guide grooves 63 are opened on the fixed platforms 62. The two clamping plates 61 are slidably disposed at both ends of the guide grooves 63. A third bidirectional screw 64 is rotatably connected in the guide grooves 63 through bearings. The two clamping plates 61 are located at both ends of the third bidirectional screw 64 and are threadedly connected to the third bidirectional screw 64. A sixth motor 65 is fixedly connected on the fixed platform 62. The output end of the sixth motor 65 is fixedly connected to the third bidirectional screw 64. A collection bin 7 is fixedly connected to the bottom of the test platform 1.

[0050] Specifically, when the conveyor belt 21 transports the wire harness to one side of the clamping plate 424, the first cylinder 423, along with the sliding connection between the two ends of the moving plate 421 and the fixed plate 422 via grooves, moves the moving plate 421 forward, positioning the wire harness between the two clamping plates 424. Then, the fifth motor 431 drives the second bidirectional screw 430 to rotate. Through the threaded connection between the two clamping plates 424 and the second bidirectional screw 430, the two clamping plates 424 move in opposite directions, thus allowing the wire harness to be properly positioned between them. The wire harness is fixed in place, and then secured to both sides of the outer periphery by two pairs of clamping plates 424. A third motor 414 drives one of the third gears 413 to rotate. Through the meshing connection between the two third gears 413 and the third toothed belt 415, the other third gear 413 is driven to rotate, thereby rotating the rectangular platform 411. As the rectangular platform 411 drives the two sets of clamping plates 424 to rotate towards the fixing member 6, the first cylinder 423 drives the moving plate 421 to reset. Simultaneously, the fourth motor 428 drives the first bidirectional screw 427 to rotate. The threaded connection between the two rectangular blocks 426 and the first bidirectional screw 427 causes the two rectangular blocks 426 to move in opposite directions, thereby causing the two sets of clamping plates 424 to move in opposite directions. This, in turn, straightens the middle section of the wire harness through the two sets of clamping plates 424. When the rotating component 41 moves the wire harness to one side of the fixing component 6, the first cylinder 423 drives the clamping plates 424 towards the fixing component 6, so that the straightened middle section of the wire harness is located between the two clamping plates 61 in the fixing component 6. At this time, the sixth motor 65 operates, driving the third bidirectional screw 64. The rotation, through the threaded connection between the two clamping plates 61 and the third bidirectional screw 64, drives the two clamping plates 61 to clamp and fix the middle part of the wire harness, thereby fixing the wire part in the wire harness. Then, through the setting of the conveyor table 3, the fixing part 6 and the wire harness are moved towards the detection device 5. The detection device 5 detects the wire harness. When the wire harness is qualified, the conveyor table 3 drives the fixing part 6 and the wire harness to continue to move forward and move to the top of the collection bin 7. At this time, the fixing part 6 releases the wire harness, and the qualified wire harness is collected through the collection bin 7.

[0051] Example 4:

[0052] See Figures 1-11 The rotating component 51 includes a rotating table 511. Two vertical plates 512 are fixedly connected to the test table 1. Connecting rods 513 are fixedly connected to both ends of the rotating table 511. The connecting rods 513 are rotatably connected to the vertical plates 512 through bearings. A seventh motor 514 is fixedly connected to one side of the vertical plate 512. The output end of the seventh motor 514 is fixedly connected to one end of the connecting rod 513.

[0053] Adjustment component 53 includes a moving rod 531. Multiple guide grooves 532 are formed on the surface of the rotary table 511. Two moving rods 531 are located at opposite ends of the guide grooves 532 and are slidably connected to the rotary table 511. A fourth bidirectional screw 533 is rotatably connected to the guide grooves 532 via bearings. The moving rods 531 are threadedly connected to the fourth bidirectional screw 533. A servo motor 534 is fixedly connected to one side of the rotary table 511. The output end of the servo motor 534 is fixedly connected to one end of the fourth bidirectional screw 533. A storage box 55 is fixedly connected to the rotary table 511. Two moving rods 531 are located on opposite sides of the storage box 55. A limit groove 535 is formed at the bottom of the moving rod 531. A hinge seat 536 is provided at the bottom of the moving rod 531. A limiting rod 537 is fixedly connected to the top of 536. The limiting rod 537 is slidably disposed in the limiting groove 535. A second cylinder 538 is fixedly connected to one side of the moving rod 531. The output end of the second cylinder 538 is fixedly connected to the hinge seat 536. A hinge block 539 is hinged to the bottom of the hinge seat 536. An eighth motor 530 is fixedly connected to one side of the hinge seat 536. The output end of the eighth motor 530 is fixedly connected to the hinge block 539. A gripper 52 is fixedly installed at the bottom of the hinge block 539. A tension sensor 54 is fixedly installed on one side of the gripper 52. A clamping plate 5311 is fixedly connected to the other side of the gripper 52. Two baffles 551 are hinged at the opening of the storage box 55. The two baffles 551 are rotatably connected to the storage box 55 through a torsion spring.

[0054] Specifically, after the fixing member 6 moves the wire harness to the bottom of the detection device 5, the seventh motor 514 drives the connecting rod 513 to rotate, thereby driving the rotary table 511 to rotate. This causes the gripper 52 to be positioned directly above the fixing member 6, between the wire and the terminal of the wire harness. Then, through the setting of the second cylinder 538 and the sliding connection between the limiting rod 537 and the limiting groove 535, the gripper 52 is driven to move downward, thereby clamping the connection between the wire and the terminal of the wire harness. Then, the servo motor 534 drives the fourth bidirectional screw 533 to rotate, and through the threaded connection between the fourth bidirectional screw 533 and the moving rod 531... The two moving rods 531 move in opposite directions, thereby applying tension to the connection between the wire and the terminal of the wire harness. Based on the tension sensor 54, when the maximum tension is applied at the connection between the wire and the terminal, and the wire harness is undamaged (i.e., it is a qualified product), the gripper 52 releases the wire harness, and the conveyor table 3 transports the fixing member 6 and the wire harness. When the wire harness is damaged (i.e., it is a non-qualified product), the fixing member 6 releases the wire harness, and the rotating member 51 drives the wire harness to rotate upwards. Simultaneously, the adjusting member 53 of the next group detects the next wire harness. When the rotating member 51 drives the wire harness to the rotating table 511... After reaching the top, the movable hinge between the gripper 52 and the hinge seat 536, along with the eighth motor 530, drives the gripper 52 to rotate towards the storage box 55. Through the clamping plate 5311, the two baffles 551 at the opening of the storage box 55 rotate inward, thus opening the storage box 55. At this point, the gripper 52 releases, and gravity allows the wire harness to be stored in the storage box 55. Then, the gripper 52 rotates in the opposite direction and returns to its original position. The torsion spring between the baffle 551 and the storage box 55 then returns the baffle 551 to its original position, sealing the opening of the storage box 55. This is achieved through the cooperation between the rotating component 51 and the adjusting component 53. The cooperation between the fixing part 6 and the conveyor table 3 ensures that when the wire harness is qualified, the gripper 52 releases the wire harness and the conveyor table 3 transports the wire harness to the collection bin 7. When the wire harness is unqualified, the fixing part 6 releases the wire harness and the rotating part 51 keeps the wire harness on the gripper 52. When the gripper 52 holding the wire harness rotates to directly above the rotating table 511, the gripper 52 rotates towards the collection box 55 and collects the wire harness in the gripper 52 into the collection box 55. This achieves the purpose of classifying and collecting the wire harness, solving the problem that manually operated tensile testers are unable to achieve continuous wire harness testing and wire harness classification and collection.

[0055] Example 5:

[0056] See Figures 1-11 This embodiment discloses a testing method using an automotive wiring harness terminal tensile testing device. The specific steps are as follows:

[0057] The wire harness is placed on the transport table 2, which moves the wire harness forward. When the wire harness reaches the clamping member 42, the clamping member 42 moves towards the wire harness and grips it. After gripping the wire harness, the rotating member 41 rotates, causing the clamping member 42 and the wire harness to rotate towards the transport table 3. During rotation, the clamping member 42 moves both ends of the wire harness to the sides, keeping the middle of the wire harness taut. When the rotating member 41 moves the clamping member 42 to the side of the fixing member 6, the clamping member 42 moves the taut wire harness towards the fixing member 6. The fixing member 6 clamps and fixes the middle of the wire harness, leaving space between the wire harness and the terminal. Then, the transport table 3 moves the fixing member 6 and the wire harness towards the transport table 3. Moving forward, after the fixing member 6 and the wire harness move to the bottom of the detection device 5, the adjusting member 53 drives the gripper 52 to move downward, gripping both sides of the wire harness, so that the position between the wire harness and the terminal is in the gripper 52. Then, the adjusting member 53 drives the two grippers 52 to move to both sides respectively, so as to perform a tensile test on the position between the wire harness and the terminal. The tensile force sensor 54 is set to detect the tensile force of the wire harness terminal. When the wire harness is qualified, the qualified wire harness is transported by the conveyor table 3 and the fixing member 6. When the limit is not qualified, the rotating member 51 drives the adjusting member 53 and the gripper 52 to rotate upward, and collects the unqualified wire harness into the collection box 55, so as to classify and collect the wire harness.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for automotive wiring harness terminals, comprising a test bench, characterized in that: The test platform is provided with a transport platform and a conveyor platform on both sides, and a transmission device is provided between the transport platform and the conveyor platform. A detection device is provided on the conveyor platform, and a fixing component is provided on the conveyor platform. The detection device cooperates with the fixing component. The transmission device includes a rotating component and a clamping component. The transport platform is located on one side and slightly below the clamping component. The transport platform transports the wire harness onto the clamping component. The clamping component clamps and tightens the wire harness. The rotating component transports the clamped wire harness to one side of the conveying platform. The fixing component secures the clamped wire harness, ensuring that the terminals at both ends of the wire harness are located on either side of the fixing component. The conveyor platform transports the fixing component and the wire harness to the bottom of the detection device. The detection device includes a rotating component, grippers located around the rotating component, an adjusting component for controlling the displacement of the grippers, a tension sensor, and a storage box. The adjusting component moves the grippers onto the fixing component, positioning the two grippers at the connection points between the wire harness and the terminals. The adjusting component also moves the two grippers to the sides. The tension sensor detects the wire harness and stores any defective wire harnesses in the storage box. The conveyor platform and the fixing component then transport any qualified wire harnesses. The fixing component includes a pair of clamping plates. Multiple fixed platforms are evenly fixedly connected to the conveyor belt. Guide grooves are opened on the fixed platforms. The two clamping plates are slidably disposed at both ends of the guide grooves. A third bidirectional screw is rotatably connected to the guide grooves through bearings. The two clamping plates are located at both ends of the third bidirectional screw and are threadedly connected to the third bidirectional screw. A sixth motor is fixedly connected to the fixed platform. The output end of the sixth motor is fixedly connected to the third bidirectional screw. A collection bin is fixedly connected to the bottom of the test platform. The adjusting component includes movable rods. Multiple guide grooves are formed on the surface of the rotating table. Two movable rods are located at opposite ends of the guide grooves and are slidably connected to the rotating table. A fourth bidirectional screw is rotatably connected to the guide grooves via bearings. The movable rods are threadedly connected to the fourth bidirectional screw. A servo motor is fixedly connected to one side of the rotating table. The output end of the servo motor is fixedly connected to one end of the fourth bidirectional screw. The storage box is fixedly connected to the rotating table. Two movable rods are located on opposite sides of the storage box. Limit grooves are formed at the bottom of the movable rods. A hinge seat is provided at the bottom of the movable rod. A limiting rod is fixedly connected to the top, and the limiting rod is slidably disposed in the limiting groove. A second cylinder is fixedly connected to one side of the moving rod, and the output end of the second cylinder is fixedly connected to the hinge seat. A hinge block is hinged to the bottom end of the hinge seat. An eighth motor is fixedly connected to one side of the hinge seat, and the output end of the eighth motor is fixedly connected to the hinge block. The gripper is fixedly installed at the bottom of the hinge block. The tension sensor is fixedly installed on one side of the gripper. A clamping plate is fixedly connected to the other side of the gripper. Two baffles are hinged at the opening of the storage box, and the two baffles are rotatably connected to the storage box through a torsion spring.

2. The automotive wiring harness terminal tensile testing device according to claim 1, characterized in that: The transport platform includes a transport belt. Transport rollers are rotatably connected to both sides of the test platform via bearings. The transport belt is sleeved on the transport rollers. Two first gears are rotatably connected to the test platform via bearings. One of the first gears is fixedly connected to one end of one of the transport rollers. A first motor is fixedly connected to the test platform. The output end of the first motor is fixedly connected to the other first gear. A first toothed belt that meshes with the first gear is sleeved on the outer periphery of the two first gears.

3. The automotive wiring harness terminal tensile testing device according to claim 2, characterized in that: The conveyor platform includes a conveyor belt. Conveying rollers are rotatably connected to both sides of the test platform via bearings. The conveyor belt is fitted onto the conveying rollers. Two second gears are rotatably connected to the test platform via bearings. One of the second gears is fixedly connected to one end of one of the conveying rollers. A second motor is fixedly connected to the test platform. The output end of the second motor is fixedly connected to the other second gear. A second toothed belt that meshes with the second gears is fitted around the outer periphery of the two second gears. Multiple fixing components are evenly fixedly installed on the conveyor belt.

4. The automotive wiring harness terminal tensile testing device according to claim 3, characterized in that: The rotating component includes a rectangular platform with fixed rods fixedly connected to both ends. The fixed rods are rotatably connected to the test platform via bearings. Two third gears are rotatably connected to the test platform via bearings. A third motor is fixedly connected to the test platform. The third motor is fixedly connected to one of the third gears. The other third gear is fixedly installed on the outer periphery of the fixed rod. A third toothed belt that meshes with the third gear is sleeved on the outer periphery of the two third gears.

5. The automotive wiring harness terminal tensile testing device according to claim 4, characterized in that: The clamping component includes a movable plate. Fixed plates are fixedly connected to both ends of one side of the rectangular platform. A sliding groove is provided on the fixed plate. Both ends of the movable plate are slidably disposed in the sliding groove. An inner groove is provided on one side of the rectangular platform. A first cylinder is fixedly connected in the inner groove. The output end of the first cylinder is fixedly connected to one side of the movable plate.

6. The automotive wiring harness terminal tensile testing device according to claim 5, characterized in that: The clamping component further includes a pair of clamping plates. A sliding groove is provided on one side of the movable plate, and rectangular blocks are slidably arranged on both sides of the sliding groove. A first bidirectional screw is rotatably connected to the sliding groove via bearings. The two rectangular blocks are respectively located at both ends of the first bidirectional screw and are threadedly connected to the first bidirectional screw. A fourth motor is fixedly connected to one side of the movable plate, and the output end of the fourth motor is fixedly connected to one end of the first bidirectional screw. A vertical groove is provided on one side of the rectangular block, and the two clamping plates are slidably arranged at both ends of the vertical groove. A second bidirectional screw is rotatably connected to the vertical groove via bearings. The two clamping plates are respectively located at both ends of the second bidirectional screw and are threadedly connected to the second bidirectional screw. A fifth motor is fixedly connected to the top of the rectangular block, and the output end of the fifth motor is fixedly connected to one end of the second bidirectional screw.

7. The automotive wiring harness terminal tensile testing device according to claim 6, characterized in that: The rotating component includes a rotating platform, on which two vertical plates are fixedly connected. Connecting rods are fixedly connected to both ends of the rotating platform. The connecting rods are rotatably connected to the vertical plates through bearings. A seventh motor is fixedly connected to one side of the vertical plate, and the output end of the seventh motor is fixedly connected to one end of the connecting rod.

8. A detection method, characterized in that: The specific steps of using the automotive wiring harness terminal tensile testing device as described in any one of claims 1-7 are as follows: The wire harness is placed on the transport table, which moves the harness forward. When the harness reaches the clamping component, the clamping component moves towards the harness and grips it. After gripping the harness, the rotating component moves, causing the clamping component and the harness to rotate towards the transport table. During rotation, the clamping component moves the two ends of the harness to the sides, keeping the middle of the harness taut. When the rotating component moves the clamping component to the side of the fixing component, the clamping component moves the taut harness towards the fixing component. The fixing component clamps and secures the middle of the harness, leaving space between the harness and the terminal. Then, the transport table moves the fixing component and the harness towards... Moving forward, once the fixing component and wire harness have moved to the bottom of the testing device, the adjusting component moves the gripper downwards, gripping both sides of the wire harness to position the wire harness and terminal within the gripper. Then, the adjusting component moves the two grippers to the sides respectively, performing a tensile test on the position between the wire harness and terminal. A tensile sensor is used to detect the tensile force on the wire harness terminal. When the wire harness is qualified, it is transported via the conveyor and fixing component. When the limit is not met, the rotating component moves the adjusting component and gripper upwards, collecting the unqualified wire harness into the collection box, thus classifying and collecting the wire harnesses.

Images