Stretching detection device for automobile wire harness

Abstract

The invention discloses a stretching detection device for an automobile wire harness, and relates to the technical field of automobile wire harness detection.The stretching detection device comprises a supporting base, a wire harness conveying box is installed at the top end of the supporting base, an automatic conveying and detecting mechanism is arranged in the wire harness conveying box, and the automatic conveying and detecting mechanism comprises a T-shaped partition plate; a T-shaped partition plate is clamped in the wiring harness conveying box, bidirectional adjusting rods are connected to the interior of the T-shaped partition plate at equal intervals, and the outer sides of the bidirectional adjusting rods are symmetrically sleeved with conveying sliding frames through threads. According to the automobile wire harness conveying device, through cooperation of a bidirectional adjusting rod, a transmission adjusting wheel and a conveying belt, power is transmitted, the positions of the two conveying sliding frames in the wire harness conveying box are adjusted, automobile wire harnesses of different lengths can be conveniently clamped and conveyed, convenience is improved, and through cooperation of supporting inserting rods, stability of the two lifting transverse frames is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile wire harness detection, and particularly relates to a stretching detection device for automobile wire harness. BACKGROUND

[0002] The automobile wire harness is the main body of the automobile circuit, and there is no automobile circuit without the wire harness. The wire harness refers to a component for connecting the circuit, which is formed by bundling the wire harness after the contact terminal made of copper material is pressure-connected with the wire cable, and the outside is pressure-insulated or externally provided with a metal shell. The automobile wire harness needs to be subjected to stretching detection after production. For example, a device for detecting the pull-off force of a wire harness terminal for automobiles is disclosed in the application No. CN202121623568.0. The device can detect the pull-off force of the wire harness terminal. The user can directly calculate the bearing capacity of the wire harness terminal by adding the weight. However, the device is inconvenient for automatically conveying and positioning detection of the whole automobile wire harness, and people need to frequently operate, so that the continuous stretching detection of the automobile wire harness is not convenient, and the detection efficiency on the production line is reduced. Therefore, in order to avoid the above technical problems, it is necessary to provide a stretching detection device for automobile wire harness to overcome the defects in the prior art. SUMMARY

[0003] The stretching detection device for automobile wire harness can effectively solve the problem that the whole automobile wire harness is inconvenient for automatic conveying and positioning detection, people need to frequently operate, so that the continuous stretching detection of the automobile wire harness is not convenient, and the detection efficiency on the production line is reduced.

[0004] To achieve the above purpose, the application provides the following technical scheme: a stretching detection device for automobile wire harness, comprising a support base, a wire harness conveying box is installed at the top end of the support base, an automatic conveying and detection mechanism is arranged in the wire harness conveying box, and the automatic conveying and detection mechanism comprises a T-shaped partition plate. A T-shaped partition plate is clamped in the wire harness conveying box, bidirectional adjusting rods are connected at equal intervals in the T-shaped partition plate, conveying slides are symmetrically sleeved on the outer sides of the bidirectional adjusting rods in a threaded manner, anti-deviation clamping blocks are connected at equal intervals in the conveying slides, and wire clamping traction frames are installed at one end of the anti-deviation clamping blocks. Sliding platforms are clamped at both ends of the two conveying slides, hydraulic lifting rods are symmetrically installed at the top ends of the two sliding platforms, lifting cross frames are clamped at the top ends of the adjacent two hydraulic lifting rods, and a support insertion rod is clamped at one end of one lifting cross frame. Limiting sliding grooves are formed at the top ends of one lifting cross frame, detection push blocks are connected in the two limiting sliding grooves, and limiting insertion frames are clamped at the bottom ends of the two detection push blocks.

[0005] According to the above technical solution, an internal threaded cylinder is engaged with the outer side of the bidirectional adjusting rod inside the conveying slide, the bottom end of the sliding platform is in contact with the top of the T-shaped partition and the wire harness conveying box, one end of the support rod is slidably embedded inside another lifting crossbeam, and a positioning rod is engaged inside the limiting slide groove.

[0006] According to the above technical solution, both ends of the bidirectional adjusting rod are fixedly sleeved with transmission adjusting wheels, and both of the two transmission adjusting wheels are sleeved with transmission belts. The conveyor sprocket is equidistantly connected inside the conveyor carriage, and a traction chain is sleeved on the outside of the conveyor sprocket; Two of the conveyor carriages are connected at equal intervals at one end to cross rotating rods, and an inner cross rotating cylinder is rotatably connected inside the T-shaped partition to the outer side of the corresponding cross rotating rods. A traction motor is installed on the outer side of one of the inner cross rotating cylinders. The wire clamping traction frame is internally connected to a reciprocating slider, and a return spring is engaged between the reciprocating slider and the wire clamping traction frame. An elastic wire clamping frame is installed at the top of the reciprocating slider.

[0007] According to the above technical solution, the threads at both ends of the bidirectional adjusting rod rotate in opposite directions, one end of the cross rotating rod passes through the conveyor slide and is connected to one end of the conveyor sprocket, one end of the anti-deviation block is connected to one end of the traction chain, and the installation position of the elastic clamp frame corresponds to the installation position of the limiting bracket.

[0008] According to the above technical solution, a tension detector is installed at the top of one of the lifting crossbeams, and an electric reciprocating push rod is installed at the top of the other lifting crossbeam. One end of the electric reciprocating push rod is engaged with a splicing push block, and a touch switch is installed at one end of the lifting crossbeam corresponding to the position of the splicing push block. A sliding platform has a storage groove at its top. Push support springs are symmetrically engaged inside the storage groove, and an arc-shaped top block is engaged at the other end of the push support spring. An extrusion plate is installed at the top of the arc-shaped top block, and a touch switch is installed at the top of the sliding platform on the side corresponding to the extrusion plate. A delay controller is mounted on the top of one of the sliding platforms.

[0009] According to the above technical solution, the hydraulic lifting rod, traction motor, tension tester, electric reciprocating push rod, delay controller and touch switch are all powered by an external power source. The input end of the hydraulic lifting rod is connected to the signal output end of the touch switch. The input ends of the traction motor and the electric reciprocating push rod are both connected to the signal output end of the delay controller, and the input end of the delay controller is connected to the signal output end of the touch switch.

[0010] According to the above technical solution, a screening and conveying mechanism is provided at one end of the wire harness conveying box, and the screening and conveying mechanism includes a positioning cross plate; A positioning plate is engaged between the two sliding platforms on the same side, and a lifting rod is equidistantly connected inside the positioning plate. A line-lifting insert is engaged at the top of the lifting rod. Both sliding platforms on the same side are fitted with limit bearings at their bottom ends. A drive crossbar is connected inside the limit bearing. Elliptical wheels are fixedly sleeved on the outside of the drive crossbar at equal intervals. A counterweight block is fitted at the bottom end of two adjacent lifting rods at the top position of the elliptical wheel. A compression spring is fitted between the counterweight block and the positioning crossbar at the outer position of the lifting rod. The T-shaped partition is rotatably connected between two corresponding drive crossbars inside, and a wire-pulling drive motor is installed on the outside of the rotating sleeve. The bottom of the thread-picking plate is at a higher level than the top of the thread-clamping traction frame. The drive crossbar has slots at equal intervals on its outer side, and a locking block is engaged at the corresponding position inside the slot on the inner wall of the rotating sleeve. The thread-picking drive motor is powered by an external power source.

[0011] According to the above technical solution, one end of the T-shaped partition is clamped with a material conveying extension frame, one end of the material conveying extension frame is rotatably connected to a drive shaft, and a rotating shaft sleeve is symmetrically sleeved on the outside of the drive shaft and the outside of an inner cross rotating cylinder. An inner toothed conveyor belt is sleeved on the outside of the two rotating shaft sleeves located on the same side, and a wire pull rod is clamped at equal distances on the outside of the top of the two inner toothed conveyor belts. The top of the T-shaped partition and one end of the wire harness conveyor box are both provided with slots at the positions corresponding to the outer side of the inner toothed conveyor belt. The horizontal height of the top of the wire guide rod is higher than the horizontal height of the top of the sliding platform.

[0012] According to the above technical solution, a cable tray is snapped onto one end of the cable harness conveyor box at the top of the support base, and a gantry frame is symmetrically snapped onto the top of the cable tray. An anti-drop frame is snapped onto the top of each of the two gantry frames. The inner wall of the hub box is fitted with a separation baffle. Waste wire discharge channels are fitted at the bottom of the hub box on one side corresponding to the separation baffle and at the bottom of the wire harness conveyor box on one side. A waste collection box is installed at the bottom of the support base at the bottom of the waste wire discharge channel.

[0013] According to the above technical solution, the top of the junction box is attached to the bottom of the material conveying extension frame, and the distance between the anti-drop frame and the material conveying extension frame is greater than the height of the wire guide rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. An automatic conveying and detection mechanism is set up. Through the cooperation of bidirectional adjusting rod, transmission adjusting wheel and transmission belt, power is transmitted and the position of the two conveying carriages inside the wire harness conveying box is adjusted to facilitate the clamping and conveying of automotive wire harnesses of different lengths, which improves convenience. In addition, through the cooperation of support rod, the stability of the two lifting crossbeams is ensured without affecting the position adjustment of the conveying carriages, thus improving adaptability. The combination of traction motor, inner cross drum, cross rod, conveyor sprocket, traction chain, anti-deviation block, wire clamping traction frame and elastic wire clamping frame facilitates the clamping and conveying of automotive wiring harnesses to the detection position. At the same time, the elastic wire clamping frame squeezes the arc-shaped top block, which facilitates the contact between the squeezing plate and a touch switch to shut off the traction motor, stop the conveying of automotive wiring harnesses, and control the hydraulic lifting rod to pull the lifting crossbeam down, forcing the limit bracket to slide into the outside of the elastic wire clamping frame, further improving the clamping effect of automotive wiring harnesses. The delay controller activates the electric reciprocating push rod after a delay, which facilitates the movement of the limit bracket and the elastic clamp frame to stretch one end of the automotive wiring harness. The other end of the automotive wiring harness is connected to the tensile testing instrument through the cooperation of the elastic clamp frame, the detection push block, and the limit bracket, which facilitates the tensile testing of the automotive wiring harness and the real-time recording of the tensile force. After the electric reciprocating push rod is reset, another touch switch resets the lifting crossbeam, releases the limit, and uses a delay controller to start the traction motor to feed the automotive wiring harness again. This cycle continues intermittently to perform tensile testing on the automotive wiring harness, achieving automated testing and reducing manual operation.

[0015] 2. A screening and conveying mechanism is set up. Through the cooperation of the wire-pulling drive motor, counterweight block, lifting rod, compression spring and elliptical wheel, the wire-pulling plate is continuously and intermittently pushed up and down to facilitate the lifting of the automotive wire harness held inside the elastic clamp frame, releasing the clamp and providing convenience for subsequent separation. Meanwhile, when the conveyor sprocket is conveying the automotive wiring harness, the inner cross drum drives the rotating bushing, the inner toothed conveyor belt and the drive shaft to rotate, thereby causing the wire-pulling lever to rotate and push the unclamped automotive wiring harness to move along the material conveying extension frame, conveying it into the junction box for storage. In addition, during the conveying process, the anti-drop pressure frame and the material conveying extension frame work together to clamp and convey the automotive wiring harness, preventing it from falling and ensuring the conveying effect. When a car wiring harness breaks after a tensile test, because the broken wires are not connected, the wire puller cannot move the broken wires along the conveyor extension frame. At the same time, the weight of the two ends of the car wiring harness is relatively heavy, so during the conveying process, it falls and enters the waste collection box through the waste wire discharge channel for storage. This achieves the effect of screening and conveying car wiring harnesses, making it easier to separate qualified car wiring harnesses from defective ones, thus increasing convenience.

[0016] In summary, by coordinating the automatic conveying and testing mechanisms with the screening and conveying mechanisms, a complete automated inspection and sorting system for automotive wiring harnesses is formed. This system can automatically convey, position, and perform tensile testing on automotive wiring harnesses, improving convenience. Simultaneously, after inspection, it automatically classifies and collects finished and defective products, increasing efficiency, reducing worker intervention, and alleviating labor pressure. It achieves precise and efficient separation and collection of qualified automotive wiring harnesses from defective products in tensile testing, enhancing downstream quality control and logistics management capabilities. After testing, the system outputs indicators such as tensile strength and elongation at break through HMI or host computer software, and supports data storage and report generation. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the automatic conveying and detection mechanism of the present invention; Figure 3 This is a schematic diagram of the installation structure of the cross-shaped rotating rod of the present invention; Figure 4 This is a schematic diagram of the installation structure of the conveyor sprocket of the present invention; Figure 5 This is a schematic diagram of the installation structure of the tensile testing instrument of the present invention; Figure 6 This is a schematic diagram of the installation structure of the delay controller of the present invention; Figure 7 This is a schematic diagram of the structure of the screening and conveying mechanism of the present invention; Figure 8 This is a schematic diagram of the installation structure of the dial lever of the present invention.

[0019] The diagram shows: 1. Support base; 2. Wire harness delivery box; 3. Automatic conveying and detection mechanism; 301. T-shaped partition; 302. Bidirectional adjusting rod; 303. Conveyor carriage; 304. Anti-deviation clamp; 305. Wire clamping traction frame; 306. Sliding platform; 307. Hydraulic lifting rod; 308. Lifting crossbeam; 309. Support rod; 310. Limiting chute; 311. Detection push block; 312. Limiting bracket; 313. Transmission adjusting wheel; 314. Transmission belt; 315. Conveyor sprocket; 16. Traction chain; 317. Cross lever; 318. Inner cross drum; 319. Traction motor; 320. Elastic clamp frame; 321. Reciprocating slider; 322. Return spring; 323. Tensile tester; 324. Electric reciprocating push rod; 325. Splicing push block; 326. Touch switch; 327. Storage groove; 328. Push support spring; 329. Arc-shaped top block; 330. Extrusion plate; 331. Delay controller; 4. Screening and conveying mechanism; 401. Positioning cross plate; 402. Lifting top rod; 403. Wire picking plate; 404. Limiting shaft seat; 405. Drive cross rod; 406. Elliptical wheel; 407. Counterweight block; 408. Compression spring; 409. Rotating sleeve rod; 410. Wire picking drive motor; 411. Conveying extension frame; 412. Drive shaft; 413. Rotating bushing; 414. Internal toothed conveyor belt; 415. Wire picking rod; 416. Wire collection box; 417. Gantry frame; 418. Anti-drop frame; 419. Separation baffle; 420. Waste wire discharge channel; 421. Waste collection box. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figures 1-8 As shown, the present invention provides a technical solution, a tensile testing device for automotive wiring harnesses, including a support base 1, a wiring harness conveying box 2 installed at the top of the support base 1, and an automatic conveying and testing mechanism 3 inside the wiring harness conveying box 2. The automatic conveying and testing mechanism 3 includes a T-shaped partition 301, a bidirectional adjusting rod 302, a conveying carriage 303, an anti-deviation block 304, a wire clamping traction frame 305, a sliding platform 306, a hydraulic lifting rod 307, a lifting crossbeam 308, a support rod 309, a limiting slide 310, a testing push block 311, a limiting bracket 312, a transmission adjusting wheel 313, a transmission belt 314, a conveying sprocket 315, a traction chain 316, a cross rotating rod 317, an inner cross rotating drum 318, a traction motor 319, an elastic wire clamping frame 320, a reciprocating slider 321, a reset spring 322, a tensile tester 323, an electric reciprocating push rod 324, a splicing push block 325, a touch switch 326, a storage slide 327, a push support spring 328, an arc-shaped top block 329, a pressing plate 330, and a delay controller 331. The wire harness conveying box 2 has a T-shaped partition 301 inside, and bidirectional adjusting rods 302 are connected at equal intervals inside the T-shaped partition 301. The bidirectional adjusting rods 302 are symmetrically connected to the outside of the conveying slide 303 by threads. Anti-deviation blocks 304 are connected at equal intervals inside the conveying slide 303. A wire clamping traction frame 305 is installed at one end of the anti-deviation block 304. Both ends of the two conveyor slides 303 are connected to sliding platforms 306. Hydraulic lifting rods 307 are symmetrically installed on the top of the two sliding platforms 306. The top of the two adjacent hydraulic lifting rods 307 are connected to lifting crossbars 308. One end of the two lifting crossbars 308 is connected to a support rod 309. Both lifting crossbeams 308 have limit grooves 310 at their top ends. Both limit grooves 310 are connected to detection push blocks 311, and both detection push blocks 311 are engaged with limit inserts 312 at their bottom ends. To improve the stability of the connection between the two lifting crossbeams 308, an internal threaded cylinder is engaged with the outside of the bidirectional adjusting rod 302 inside the conveying slide 303. The bottom end of the sliding platform 306 is in contact with the top end of the T-shaped partition 301 and the wire harness conveying box 2. One end of the support insert 309 is slidably embedded inside the other lifting crossbeam 308. A positioning rod is engaged inside the limit groove 310. Both ends of the bidirectional adjusting rod 302 are fixedly sleeved with transmission adjusting wheels 313, and both transmission adjusting wheels 313 are sleeved with transmission belts 314. Conveyor sprockets 315 are equidistantly connected inside the conveyor carriage 303, and traction chains 316 are sleeved on the outside of the conveyor sprockets 315. Two conveyor carriages 303 are connected at equal intervals at one end to cross rods 317, and an inner cross drum 318 is rotatably connected inside the T-shaped partition 301 to the outside of the cross rods 317. A traction motor 319 is installed on the outside of one inner cross drum 318. The wire clamping traction frame 305 is internally connected to a reciprocating slider 321, and a return spring 322 is engaged between the reciprocating slider 321 and the wire clamping traction frame 305. A spring clamping frame 320 is installed at the top of the reciprocating slider 321. In order to adjust the distance between the two conveying carriages 303, the threads at both ends of the bidirectional adjusting rod 302 rotate in opposite directions. One end of the cross rod 317 passes through the conveying carriage 303 and is connected to one end of the conveying sprocket 315. One end of the anti-deviation block 304 is connected to one end of the traction chain 316. The installation position of the spring clamping frame 320 corresponds to the installation position of the limiting bracket 312. A tension tester 323 is installed at the top of one lifting crossbeam 308, and an electric reciprocating push rod 324 is installed at the top of the other lifting crossbeam 308. One end of the electric reciprocating push rod 324 is engaged with a splicing push block 325, and a touch switch 326 is installed at one end of the lifting crossbeam 308 corresponding to the side of the splicing push block 325. A sliding platform 306 has a storage groove 327 at its top. A push support spring 328 is symmetrically engaged inside the storage groove 327. An arc-shaped top block 329 is engaged at the other end of the push support spring 328. A pressing plate 330 is installed on the top of the arc-shaped top block 329. A touch switch 326 is installed on the top of the sliding platform 306 at the position corresponding to the side of the pressing plate 330. A time delay controller 331 is installed on the top of a sliding platform 306. To facilitate automatic tensile testing, the hydraulic lifting rod 307, traction motor 319, tensile tester 323, electric reciprocating push rod 324, time delay controller 331, and touch switch 326 are all powered by an external power source. The input end of the hydraulic lifting rod 307 is connected to the signal output end of the touch switch 326. The input ends of the traction motor 319 and the electric reciprocating push rod 324 are both connected to the signal output end of the time delay controller 331, and the input end of the time delay controller 331 is connected to the signal output end of the touch switch 326. A screening and conveying mechanism 4 is provided at one end of the wire harness conveying box 2; The screening and conveying mechanism 4 includes a positioning horizontal plate 401, a lifting top rod 402, a line picking plate 403, a limiting shaft seat 404, a driving horizontal rod 405, an elliptical wheel 406, a counterweight block 407, a compression spring 408, a rotating sleeve rod 409, a line picking drive motor 410, a material conveying extension frame 411, a drive shaft 412, a rotating bushing 413, an internal toothed conveyor belt 414, a line picking rod 415, a line collection box 416, a gantry frame 417, an anti-drop frame 418, a separation baffle 419, a waste line discharge channel 420, and a waste collection box 421. A positioning plate 401 is engaged between the two sliding platforms 306 on the same side. A lifting rod 402 is equidistantly connected inside the positioning plate 401. A line-lifting insert plate 403 is engaged at the top of the lifting rod 402. The bottom ends of the two sliding platforms 306 on the same side are both engaged with limit bearings 404. The limit bearings 404 are connected to drive crossbars 405. Elliptical wheels 406 are fixedly sleeved on the outer side of the drive crossbars 405 at equal intervals. The bottom ends of the two adjacent lifting rods 402 are engaged with counterweight blocks 407 at the top positions of the elliptical wheels 406. The counterweight blocks 407 and the positioning crossbars 401 are both engaged with compression springs 408 at the outer positions of the lifting rods 402. Inside the T-shaped partition 301, a rotating sleeve 409 is rotatably connected between two drive crossbars 405, and a wire-picking drive motor 410 is installed on the outside of the rotating sleeve 409. In order to facilitate the picking up of the inspected automotive wiring harness, the bottom of the wire-picking plate 403 is higher than the top of the wire-clamping traction frame 305. The drive crossbar 405 is provided with slots at equal intervals on its outer side, and a locking block is engaged at the position inside the slot on the inner wall of the rotating sleeve 409. The wire-picking drive motor 410 is powered by an external power source. One end of the T-shaped partition 301 is snapped with a material conveying extension frame 411. The inside of the material conveying extension frame 411 is rotatably connected to a drive shaft 412. The outer side of the drive shaft 412 and the outer side of an inner cross drum 318 are symmetrically fitted with rotating bushings 413. The outer sides of the two rotating bushings 413 on the same side are fitted with internal toothed conveyor belts 414. The outer sides of the top of the two internal toothed conveyor belts 414 are equidistantly snapped with wire-pulling rods 415. In order to facilitate the manipulation of the automotive wiring harness, slots are opened at the top of the T-shaped partition 301 and one end of the wiring harness conveying box 2 corresponding to the outer position of the internal toothed conveyor belts 414. The horizontal height of the top of the wire-pulling rod 415 is higher than the horizontal height of the top of the sliding platform 306. The top of the support base 1 is connected to one end of the wire harness conveying box 2, and the top of the wire harness 416 is symmetrically connected to the gantry frame 417. The tops of the two gantry frames 417 are each connected to the anti-drop frame 418. A separation baffle 419 is snapped onto the inner wall of the cable collection box 416. Waste wire discharge channels 420 are snapped onto the bottom of the cable collection box 416 at one side of the separation baffle 419 and at one side of the bottom of the wire harness conveying box 2. A waste collection box 421 is installed at the bottom of the support base 1 at the bottom of the waste wire discharge channel 420. To facilitate classified collection, the top of the cable collection box 416 is attached to the bottom of the conveying extension frame 411. The distance between the anti-drop frame 418 and the conveying extension frame 411 is greater than the height of the wire pulling rod 415.

[0022] The working principle and usage process of this invention are as follows: First, rotate the bidirectional adjusting rod 302, and transmit power through the cooperation of the transmission adjusting wheel 313 and the transmission belt 314, so that the two bidirectional adjusting rods 302 rotate together, thereby moving the two conveying carriages 303 relative to each other inside the wire harness conveying box 2. Adjust the distance between the two conveying carriages 303 according to the length of the automotive wire harness to facilitate clamping. During the sliding of the conveying carriages 303, the sliding platforms 306 at both ends of the T-shaped partition 301 slide and fit together, and through the cooperation of the support rod 309, the two lifting crossbars 308 slide relative to each other, shortening the distance and ensuring the correspondence between the limiting bracket 312 and the elastic clamping wire frame 320. Then, the two ends of the car wiring harness are clamped and fixed using two elastic wire clamp frames 320. Then, the traction motor 319 is started to drive the inner cross drum 318 to rotate. Through the transmission of the cross rotating rod 317, the conveyor sprockets 315 and the traction chain 316 inside the two conveyor carriages 303 are driven to rotate, thereby pulling the anti-deviation block 304, the wire clamp traction frame 305 and the elastic wire clamp frame 320 to rotate cyclically along the outside of the conveyor carriage 303, continuously conveying the car wiring harness and forcing the car wiring harness to move at a constant speed at the top of the wiring harness conveyor box 2. Next, when the wire clamping traction frame 305 and the elastic wire clamping frame 320 move the car wiring harness at a constant speed to the bottom of the lifting crossbeam 308, the wire clamping traction frame 305 squeezes the arc-shaped top block 329, forcing the push support spring 328 to retract, making it easier to store the arc-shaped top block 329 inside the storage groove 327. At the same time, the squeezing plate 330 contacts a touch switch 326 to turn off the traction motor 319, stop the delivery of the car wiring harness, and simultaneously control the hydraulic lifting rod 307 to pull the lifting crossbeam 308 down, forcing the detection push block 311 down, pushing the limit insert 312 to slide into the outside of the elastic wire clamping frame 320, further improving the clamping effect on the car wiring harness. Using a delay controller 331, timing is started when the traction motor 319 is off, and the electric reciprocating push rod 324 is started after a delay. Only after the limit bracket 312 is in contact with the elastic clamp frame 320 does it push a detection push block 311 to move. With the cooperation of the limit bracket 312, the elastic clamp frame 320 slides along the inside of the clamp traction frame 305, causing the return spring 322 to contract and stretch one end of the automotive wiring harness. The other end of the automotive wiring harness is connected to the tensile tester 323 through the cooperation of the elastic clamp frame 320, the detection push block 311 and the limit bracket 312, which facilitates the tensile test of the automotive wiring harness and the real-time recording of the tensile force. When the electric reciprocating push rod 324 extends the automotive wiring harness to the set distance, it retracts and resets, completing the tensile test of the automotive wiring harness. The electric reciprocating push rod 324 retracts, resetting the splicing push block 325, and contacts another touch switch 326 to turn off the electric reciprocating push rod 324. At the same time, the hydraulic lifting rod 307 rises and falls, pushing the lifting crossbeam 308 to reset, causing the limit bracket 312 to separate from the elastic wire clamp frame 320, releasing the limit. The delay controller 331 starts timing, causing the traction motor 319 to start after a delay. After the limit bracket 312 separates from the elastic wire clamp frame 320, it drives the inner cross drum 318, cross rod 317, conveyor sprocket 315 and traction chain 316 to rotate, thereby moving the anti-deviation block 304, wire clamp traction frame 305 and automotive wiring harness away from below the lifting crossbeam 308. After the wire clamping traction frame 305 under the lifting crossbeam 308 is removed, the arc-shaped top block 329 loses its support. Then, with the cooperation of the push support spring 328, the arc-shaped top block 329 is pushed back to its original position and slides out of the storage groove 327, so that it can slide again when the next wire clamping traction frame 305 approaches. This cycle continues intermittently to transport and stretch the automotive wiring harness. At the same time, the automotive wiring harness can be placed during the stopping of transport, achieving the effect of continuous inspection of automotive wiring harness and reducing the operation of workers. Next, the stretched and tested automotive wiring harness is transported to one end of the wiring harness transport box 2 and paused briefly. At the same time, one end of the wire-picking plate 403 is inserted between the automotive wiring harness and the wire clamping traction frame 305. The wire-picking drive motor 410 drives the rotating sleeve 409 to rotate. Through the cooperation of the locking block and the locking slot, the drive crossbar 405 and the elliptical wheel 406 are driven to rotate. The counterweight block 407, the lifting top rod 402 and the wire-picking plate 403 are pushed to slide up along the inside of the positioning crossbar 401, thereby pushing the automotive wiring harness out from the inside of the elastic wire clamping frame 320 and releasing the clamping of the automotive wiring harness. Then, through the cooperation of the traction motor 319, the cross rod 317 and the inner cross drum 318, the rotating bushing 413, the inner toothed conveyor belt 414 and the drive shaft 412 are driven to rotate, so that the inner toothed conveyor belt 414 can rotate with the wire-pulling rod 415, and move the pushed-out automotive wire harness along the top of the material conveying extension frame 411, while the wire clamping traction frame 305 rotates into the wire harness conveying box 2 for easy circulation; Finally, when the automotive wiring harness passes the tensile test without breakage, the intact harness is pushed by the wire-pulling lever 415 along the conveying extension frame 411, away from the wire-picking plate 403, and into the anti-drop frame 418 and the conveying extension frame 411 for transport, preventing it from falling. This forces the harness to one end of the conveying extension frame 411 and into the cable collection box 416. When the harness breaks after the tensile test, because the two broken harnesses are not connected, the wire-pulling lever 415 cannot carry the broken harness along the conveying extension frame 411. Since the harnesses are heavy at both ends, they fall into the cable collection box 416 during transport. With the help of the separation baffle 419, the broken harness is easily separated and placed into the waste collection box 421 through the waste wire discharge channel 420, thus facilitating the storage of the harness.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tensile testing device for automotive wiring harnesses, comprising a support base (1), characterized in that: The top of the support base (1) is equipped with a wire harness delivery box (2), and the wire harness delivery box (2) is equipped with an automatic delivery and detection mechanism (3), which includes a T-shaped partition (301). The wire harness conveying box (2) is fitted with a T-shaped partition (301). The T-shaped partition (301) is connected with bidirectional adjusting rods (302) at equal intervals. The bidirectional adjusting rods (302) are symmetrically connected to the outside of the conveying slide (303) by threads. The conveying slide (303) is connected with anti-deviation blocks (304) at equal intervals. One end of the anti-deviation block (304) is equipped with a wire clamping traction frame (305). Both ends of the two conveyor slides (303) are connected to sliding platforms (306), and the tops of the two sliding platforms (306) are symmetrically equipped with hydraulic lifting rods (307). The tops of the two adjacent hydraulic lifting rods (307) are connected to lifting crossbars (308), and one end of the lifting crossbar (308) is connected to a support rod (309). Each of the lifting crossbeams (308) has a limit groove (310) at its top. Both limit grooves (310) are connected to a detection push block (311), and the bottom of both detection push blocks (311) are engaged with a limit insert (312).

2. The tensile testing device for automotive wiring harnesses according to claim 1, characterized in that: The conveying slide (303) has an internal threaded cylinder that is engaged with the outside of the bidirectional adjusting rod (302). The bottom of the sliding platform (306) is in contact with the top of the T-shaped partition (301) and the wire harness conveying box (2). One end of the support rod (309) is slidably embedded in another lifting crossbeam (308). The limiting slide groove (310) has a positioning rod engaged inside.

3. The tensile testing device for automotive wiring harnesses according to claim 1, characterized in that: Both ends of the bidirectional adjusting rod (302) are fixedly sleeved with transmission adjusting wheels (313), and both of the transmission adjusting wheels (313) are sleeved with transmission belts (314). The conveyor carriage (303) is equipped with conveyor sprockets (315) connected at equal intervals inside, and a traction chain (316) is sleeved on the outside of the conveyor sprockets (315). Two of the conveyor carriages (303) are connected at equal intervals at one end to cross rods (317), and an inner cross cylinder (318) is rotatably connected inside the T-shaped partition (301) to the outside of the cross rods (317), and a traction motor (319) is installed on the outside of one of the inner cross cylinders (318). The wire clamping traction frame (305) is internally connected to a reciprocating slider (321), and a return spring (322) is engaged between the reciprocating slider (321) and the wire clamping traction frame (305). An elastic wire clamping frame (320) is installed at the top of the reciprocating slider (321).

4. The tensile testing device for automotive wiring harnesses according to claim 3, characterized in that: The threads at both ends of the bidirectional adjusting rod (302) rotate in opposite directions. One end of the cross rotating rod (317) passes through the conveyor slide (303) and is connected to one end of the conveyor sprocket (315). One end of the anti-deviation block (304) is connected to one end of the traction chain (316). The installation position of the elastic clamp frame (320) corresponds to the installation position of the limiting bracket (312).

5. The tensile testing device for automotive wiring harnesses according to claim 1, characterized in that: A tension tester (323) is installed at the top of one of the lifting crossbeams (308), and an electric reciprocating push rod (324) is installed at the top of the other lifting crossbeam (308). One end of the electric reciprocating push rod (324) is engaged with a splicing push block (325), and a touch switch (326) is installed at one end of the lifting crossbeam (308) corresponding to the side of the splicing push block (325). A sliding platform (306) has a storage groove (327) at its top. A push support spring (328) is symmetrically engaged inside the storage groove (327), and an arc-shaped top block (329) is engaged at the other end of the push support spring (328). A pressing plate (330) is installed at the top of the arc-shaped top block (329), and a touch switch (326) is installed at the top of the sliding platform (306) on the side corresponding to the pressing plate (330). A delay controller (331) is mounted on the top of one of the sliding platforms (306).

6. The tensile testing device for automotive wiring harnesses according to claim 5, characterized in that: The hydraulic lifting rod (307), traction motor (319), tension tester (323), electric reciprocating push rod (324), delay controller (331) and touch switch (326) are all powered by an external power source. The input end of the hydraulic lifting rod (307) is connected to the signal output end of the touch switch (326). The input ends of the traction motor (319) and electric reciprocating push rod (324) are both connected to the signal output end of the delay controller (331), and the input end of the delay controller (331) is connected to the signal output end of the touch switch (326).

7. The tensile testing device for automotive wiring harnesses according to claim 6, characterized in that: The wire harness conveying box (2) is provided with a screening conveying mechanism (4) at one end, and the screening conveying mechanism (4) includes a positioning cross plate (401). A positioning plate (401) is engaged between the two sliding platforms (306) on the same side. A lifting rod (402) is equidistantly connected inside the positioning plate (401). A line-lifting insert (403) is engaged at the top of the lifting rod (402). The bottom ends of the two sliding platforms (306) on the same side are both engaged with limit bearings (404). The limit bearings (404) are connected to a drive crossbar (405). Elliptical wheels (406) are fixedly sleeved on the outside of the drive crossbar (405) at equal intervals. The bottom ends of the two adjacent lifting rods (402) are engaged with counterweight blocks (407) at the top positions of the elliptical wheels (406). The counterweight blocks (407) and the positioning crossbar (401) are both engaged with compression springs (408) at the outer positions of the lifting rods (402). The T-shaped partition (301) has a rotating sleeve (409) rotatably connected between two drive crossbars (405) inside, and a wire-pulling drive motor (410) is installed on the outside of the rotating sleeve (409). The bottom of the thread-picking plate (403) is at a higher level than the top of the thread-clamping traction frame (305). The drive crossbar (405) has slots at equal intervals on its outer side, and the inner wall of the rotating sleeve (409) is fitted with a locking block at the position corresponding to the slot. The thread-picking drive motor (410) is powered by an external power source.

8. The tensile testing device for automotive wiring harnesses according to claim 7, characterized in that: One end of the T-shaped partition (301) is snapped with a material conveying extension frame (411). Inside the material conveying extension frame (411), a drive shaft (412) is rotatably connected to one end. Rotary bushings (413) are symmetrically sleeved on the outside of the drive shaft (412) and the outside of an inner cross drum (318). Inner toothed conveyor belts (414) are sleeved on the outside of the two rotating bushings (413) on the same side. Wire pull rods (415) are snapped at equal distances on the outside of the top ends of the two inner toothed conveyor belts (414). The top of the T-shaped partition (301) and one end of the wire harness conveyor box (2) are both provided with slots at the positions corresponding to the outer side of the inner toothed conveyor belt (414). The horizontal height of the top of the wire pull rod (415) is higher than the horizontal height of the top of the sliding platform (306).

9. The tensile testing device for automotive wiring harnesses according to claim 8, characterized in that: The top of the support base (1) is connected to a cable tray (416) at one end of the cable harness delivery box (2). The top of the cable tray (416) is symmetrically connected to a gantry frame (417). The tops of the two gantry frames (417) are each connected to an anti-drop frame (418). The inner wall of the hub box (416) is fitted with a separation baffle (419). Waste wire discharge channels (420) are fitted at the bottom of the hub box (416) on one side corresponding to the separation baffle (419) and at the bottom of the wire harness conveying box (2). A waste collection box (421) is installed at the bottom of the support base (1) at the bottom of the waste wire discharge channel (420).

10. The tensile testing device for automotive wiring harnesses according to claim 9, characterized in that: The top of the junction box (416) is attached to the bottom of the material conveying extension frame (411), and the distance between the anti-drop frame (418) and the material conveying extension frame (411) is greater than the height of the wire guide rod (415).

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