Wire harness quality detection equipment and method

Abstract

The invention discloses wiring harness quality detection equipment and method, the wiring harness quality detection equipment comprises a detection box, and a blowing device, a solarization device, a raining device, an extrusion device and a friction device which are arranged on the detection box, and during detection, a to-be-detected wiring harness can be fixed in the detection box. The wire harness quality detection equipment has the beneficial effects that the temperature resistance, the weather resistance, the wear resistance and the electric leakage performance of the wire harness can be comprehensively detected, the detection functions are multiple, the content of detection items is rich, the quality of the wire harness can be accurately researched and judged, the whole detection process does not need severe manual participation, and the detection efficiency is improved. Compared with the prior art, the wiring harness quality detection equipment has the advantages that the wiring harness is fixed without frequent movement, disassembly and assembly, the detection cost is reduced, the detection efficiency is improved, in addition, the wiring harness quality detection equipment creatively integrates various traditional detection equipment, various detections do not influence one another, independent normal operation can be realized, meanwhile, the occupied area is greatly reduced, the purchase cost is reduced, and the detection matching cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of wire harness quality detection, and in particular to a wire harness quality detection device and method. Background Art

[0002] After a new wiring harness product is developed and trial-produced, it needs to undergo a series of quality tests (such as weather resistance test, wear resistance test, temperature resistance test, leakage performance test, etc.) to verify the quality of the wiring harness. Only wiring harnesses with qualified quality can be mass-produced and sold.

[0003] At present, the quality inspection of wire harnesses is generally completed manually with the help of a variety of inspection equipment. One inspection equipment can generally only perform inspections on one project. For example, the wire harness quality inspection equipment shown in the patent with publication number CN218037271U can only perform weather resistance inspections, and the wire harness quality inspection equipment shown in the patent with publication number CN117129357B can only perform wear resistance inspections. After the wire harness is inspected on one inspection equipment, it needs to be manually moved to another inspection equipment for inspection. The inspection process requires heavy manual participation, and the wire harness is frequently disassembled and repositioned, which wastes a lot of time. Therefore, the inspection speed is slow, the inspection takes a long time, the inspection efficiency is low, and the inspection cost is high. In addition, configuring so many inspection equipment not only has high procurement costs, but also the inspection room occupies a large area and the inspection supporting costs are high.

[0004] The inventors also found that these detection devices cannot be simply integrated, otherwise it will affect the normal operation of each device. For example, when the wire harness quality detection device shown in the patent with publication number CN117129357B is added to the wire harness quality detection device shown in the patent with publication number CN218037271U, the rotating detection component will block the fan from blowing air to the wire harness and the electric heating wire from heating the wire harness. Conversely, the weather resistance test will accelerate the aging of the rotating detection component, resulting in frequent failures and affecting its service life. Summary of the invention

[0005] The main purpose of the present invention is to propose a wire harness quality detection device and method, which aims to solve the problem that the current wire harness quality detection equipment has a single function and cannot perform multiple project detections, resulting in high wire harness detection costs and low detection efficiency.

[0006] In order to solve the above problems, the present invention proposes a wire harness quality detection device, including a detection box and a blowing device, a sun exposure device, a rain shower device, a squeezing device, and a friction device arranged on the detection box. During the detection, the wire harness to be tested can be fixed in the detection box; The blowing device comprises: Nozzle 2 is arranged on the inner wall of the detection box and is used to blow air to the wiring harness to be tested. There are multiple nozzles 2, and the multiple nozzles 2 are connected through an air pipe; An air pump connected to an air pipe; The exhaust hole is located on the inner wall of the test box opposite to the second nozzle; The sun drying device comprises: A heating lighting lamp is arranged on the inner wall of the test box and is used to irradiate and heat the wire harness to be tested; An ultraviolet lamp is provided on the inner wall of the test box and is used to irradiate the wire harness to be tested; The shower device comprises: A nozzle 1 is arranged in the test box and is used to spray water to the wire harness to be tested, and the water sprayed by the nozzle 1 is gathered at the bottom of the test box; A water pump is arranged at the bottom of the detection box and is connected to the nozzle 1 through a water pipe; The extrusion device comprises: A pair of pressing plates are respectively arranged on two opposite side walls in the detection box; A pair of push-pull devices 2 are respectively arranged on two opposite side walls of the detection box and connected to the pressing plate. The pair of pressing plates are pushed by the pair of push-pull devices 2 to approach each other, clamp and squeeze the wiring harness to be tested; A pressure sensor is located at the connection between the pressure plate and the push-pull device 2; The friction device comprises: A three-axis translation device is provided in the detection box; A conductive weight plate, wherein the conductive weight plate is suspended and connected to a three-axis translation device through an insulating suspension rope, and the three-axis translation device drives the conductive weight plate to move along the XYZ three axes, so that the conductive weight plate slides against the wiring harness to be tested; The wire harness quality detection equipment also includes a current detection device and a power supply. The current detection device, the power supply and the wire harness to be tested are connected in series through a second detection line, and the conductive heavy plate is connected to the second detection line through a third detection line.

[0007] In one embodiment, a reflector is provided on the inner wall of the detection box opposite to the heating lamp.

[0008] In one embodiment, a protective cover is fixedly installed at the bottom of the detection box, a water inlet hole is provided on the protective cover, and the water pump is located inside the protective cover.

[0009] In one embodiment, a partition is provided in the detection box, and the partition divides the detection box into two parts, the upper part is chamber 1, and the lower part is chamber 2; The partition is provided with a through hole, a pair of slide plates are slidably mounted on the upper surface of the partition, and the pair of slide plates are respectively arranged on both sides of the through hole, and a push-pull device 1 is fixedly mounted on the partition, and the push-pull device 1 is connected to the slide plate, and the push-pull device 1 drives the pair of slide plates to move closer to or away from each other to block or open the through hole; There are multiple nozzles, and the multiple nozzles are evenly distributed on a pair of slides; The three-axis translation device is installed in chamber one, and the conductive heavy plate descends through the through hole into chamber two; The pressing plate, the heating lighting lamp, the ultraviolet lamp, the exhaust hole, the second nozzle, and the wiring harness to be tested are located in the second chamber.

[0010] In one embodiment, the lower surface of the slide plate is recessed inward to form a pit, and the nozzle 1 is located in the pit.

[0011] In one embodiment, a wire drum 1 is installed through and sealed on one side wall of the detection box, one end of the wire drum 1 is open, an insulating partition 1 is provided at the bottom of the wire drum 1, the middle part of the insulating partition 1 protrudes outward and passes through the bottom of the wire drum 1, a conductive plate 1 is provided on the insulating partition 1 on the side facing away from the bottom of the wire drum 1, a conductive drum 1 is penetrated on the insulating partition 1, one end of the conductive drum 1 is tightly attached to the conductive plate 1, and the other end of the conductive drum 1 is tightly inserted with the detection wire 2; One end of the wire harness to be tested can be tightly inserted into the wire barrel, and the wire core of the wire harness to be tested can be pressed against the conductive plate.

[0012] In one embodiment, a wire drum 3 is provided through the other side wall of the detection box opposite to the side wall where the wire drum 1 is located, and the wire drum 3 is slidably and rotatably connected to the side wall of the detection box, and one end of the wire drum 3 is rotatably connected to a push-pull device 3, and the push-pull device 3 is fixedly connected to the detection box, and the wire drum 3 is pushed to slide axially by the push-pull device 3; The detection box is provided with a motor, the output shaft of the motor is provided with a gear, the gear is meshed with a gear ring, the gear ring axially slides on the bobbin three, and the gear ring and the bobbin three are coaxial; The other end of the wire drum three is fixedly installed with the wire drum two, one end of the wire drum two is open, and the other end of the wire drum three passes through the bottom of the wire drum two, and the bottom of the wire drum inside the wire drum two is provided with an insulating partition plate two, and the side of the insulating partition plate two facing away from the bottom of the wire drum two is provided with a conductive plate two, and the insulating partition plate two passes through a conductive cylinder two, and the conductive cylinder two is slidably and rotatably connected with the insulating partition plate two, and a mounting hole one is provided on the side of the insulating partition plate two facing the conductive plate two, and a mounting hole two is provided at the bottom of the mounting hole one, and a spring is provided in the mounting hole two, and a conductive ring is provided in the mounting hole one, one side of the conductive ring contacts with the spring and squeezes the spring, and the other side of the conductive ring contacts with the conductive cylinder two, and the spring is pressed to push one end of the conductive cylinder two to always keep in contact with the conductive plate two, and the other end of the conductive cylinder two is tightly inserted with the detection line two, and the detection line two passes through the wire drum three; The other end of the wire harness to be tested can be tightly inserted into the second wire barrel, and the wire core of the wire harness to be tested can be pressed against the second conductive plate.

[0013] In addition, the present invention also proposes a wire harness quality detection method, which uses any of the above-mentioned wire harness quality detection devices to perform the following steps: S1. Fix the wiring harness to be tested in the test box; S2, start the blowing device to blow air to the wiring harness to be tested, and turn off the blowing device after a period of time; S3, start the sun exposure device to irradiate and heat the wiring harness to be tested, and turn off the sun exposure device after a period of time; S4, start the sprinkler device to spray water to the wiring harness to be tested, and turn off the sprinkler device after a period of time; S5, repeat S2-S4; S6. After a period of time, the friction device is started to rub the wiring harness to be tested; During S7 and S2-S6, observe whether the current value detected by the current detection device changes.

[0014] In one embodiment, during the process of S2-S4, the push-pull device 3 is controlled to push the wire drum 3 to move axially to bend the wire harness to be tested, and the motor is controlled to drive the wire drum 3 to rotate to twist the wire harness to be tested.

[0015] In one embodiment, after the sun exposure device is started for the first time to irradiate and heat the wire harness to be tested for a period of time, the sun exposure device is turned off first, and then the extrusion device is started to extrude the wire harness to be tested, and whether the extrusion part of the wire harness to be tested is deformed is observed. After the extrusion device is reset, S4 is performed.

[0016] Beneficial effects: 1. The wire harness quality detection equipment and method of the present application can perform all-round detection of the temperature resistance, weather resistance, wear resistance and leakage performance of the wire harness. It has multiple detection functions and rich detection items, which is conducive to accurately judging the quality of the wire harness. Moreover, the entire detection process does not require heavy manual participation, and there is no need to frequently move and disassemble the fixed wire harness, which reduces the detection cost and improves the detection efficiency. 2. The wire harness quality inspection equipment of the present application creatively integrates a variety of traditional inspection equipment. Each inspection does not affect each other and can operate normally independently. At the same time, the floor space occupied is greatly reduced, the procurement cost is reduced, and the inspection supporting cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of a wire harness quality detection device of the present invention; Figure 2 It is a left side view of a wire harness quality detection device of the present invention; Figure 3 yes Figure 2 AA section view in; Figure 4 yes Figure 3 A magnified view of part B in FIG. Figure 5 yes Figure 4 The enlarged view of the D part in FIG. Figure 6 yes Figure 3 An enlarged view of section C; Figure 7 yes Figure 3 The enlarged view of part E in FIG. Figure 8 It is a top view of the partition of the present invention.

[0019] The following are the descriptions of the reference numerals: 1. Test box; 2. Partition; 3. Chamber 1; 4. Chamber 2; 5. Through hole; 6. Slide; 7. Push-pull device 1; 8. Slide plate; 9. Nozzle 1; 10. Water pipe; 11. Pit; 12. Water pump; 13. Protective cover; 14. Water inlet; 15. Heating lamp; 16. Reflector; 17. Nozzle 2; 18. Air pipe; 19. Air pump; 20. Exhaust hole; 21. Push-pull device 2; 22. Press plate; 23. Wire drum 1; 24. Insulating partition 1; 25. Conductive plate 1; 26. Conductive drum 1; 28. Wire harness to be tested; 29. ​​Wire core; 30. Locking screw 1; 31. Wire drum 2; 32 , locking screw two; 33, insulating partition two; 34, conductive plate two; 35, wire drum three; 36, barrel sleeve one; 37, bearing one; 38, gear ring; 39, gear; 40, motor; 41, frame; 42, push-pull device three; 43, mounting frame; 44, bearing two; 45, barrel sleeve two; 46, detection line two; 47, power supply; 48, current detection device; 49, conductive barrel two; 50, conductive ring; 51, mounting hole one; 52, mounting hole two; 53, spring; 54, three-axis translation device; 55, conductive heavy plate; 56, detection line three; 57, box cover; 58, ultraviolet lamp; 59, insulating rope. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0024] The present invention proposes a wire harness quality inspection device, which can perform comprehensive inspections on the temperature resistance, weather resistance, wear resistance, and leakage resistance of the wire harness. It has multiple inspection functions and rich inspection items, which is conducive to accurately judging the quality of the wire harness. Moreover, the entire inspection process does not require heavy human participation, and there is no need to frequently move and disassemble and fix the wire harness, which reduces the inspection cost and improves the inspection efficiency. In addition, the wire harness quality inspection device creatively integrates a variety of traditional inspection equipment, and various inspections do not affect each other and can operate independently and normally. At the same time, the floor space occupied is greatly reduced, the procurement cost is reduced, and the inspection supporting cost is reduced.

[0025] Specifically, in one embodiment of the invention, Figure 1-Figure 3 As shown, the wire harness quality inspection device includes a detection box 1 and a blowing device, a sun exposure device, a rain shower device, a squeezing device, and a friction device arranged on the detection box 1. During inspection, the wire harness 28 to be tested can be fixed in the detection box 1.

[0026] Specifically, Figure 1-Figure 3 As shown, the blowing device includes: a nozzle 17, an air pump 19, and an exhaust hole 20. The nozzle 17 is arranged on the inner wall of the detection box 1, and is used to blow air to the wiring harness 28 to be tested. There are multiple nozzles 17, and the multiple nozzles 17 are connected through an air pipe 18; the air pump 19 is connected to the air pipe 18; the air pump 19 is fixedly installed on the outer wall of the detection box 1. After the air pump 19 is started, air is injected into the air pipe 18, and then the air is ejected from the nozzle 17 to blow toward the wiring harness 28 to be tested, and finally the air in the detection box 1 is discharged from the exhaust hole 20. Preferably, the exhaust hole 20 is located on the inner wall of the detection box 1 relative to the nozzle 17. Such a design is conducive to the smooth flow of air in the detection box 1 and reduces air flow noise.

[0027] Specifically, Figure 1-Figure 3 As shown, the sun exposure device includes: a heating lamp 15 and an ultraviolet lamp 58. The heating lamp 15 is arranged on the inner wall of the detection box 1 for irradiating and heating the wire harness 28 to be tested. The ultraviolet lamp 58 is arranged on the inner wall of the detection box 1 for irradiating the wire harness 28 to be tested, thereby simulating the weathering of the wire harness 28 to be tested by sunlight in a natural environment.

[0028] Further, such as Figure 3 As shown, a reflector 16 is provided on the inner wall of the test box 1 relative to the heating lamp 15. The reflector 16 can direct the light emitted by the heating lamp 15 to the area on the back of the wiring harness 28 to be tested that cannot be directly illuminated by the heating lamp 15, ensuring that there is no blind spot on the wiring harness 28 to be tested.

[0029] Specifically, Figure 1-Figure 3 As shown, the shower device includes: a nozzle 9 and a water pump 12. The nozzle 9 is arranged in the detection box 1 and is used to spray water to the wiring harness 28 to be tested. The water sprayed by the nozzle 9 is gathered at the bottom of the detection box 1; the water pump 12 is arranged at the bottom of the detection box 1 and is connected to the nozzle 9 through a water pipe 10; after the water pump 12 is started, the water gathered at the bottom of the detection box 1 is extracted, and then the water is injected into the nozzle 9 through the water pipe 10 and sprayed toward the wiring harness 28 to be tested, so as to realize the recycling of water resources.

[0030] Further, such as Figure 3 As shown, a protective cover 13 is fixedly installed at the bottom of the detection box 1, and a water inlet hole 14 is provided on the protective cover 13. The water pump 12 is located in the protective cover 13. This design can prevent the water pump 12 from being affected by light, which is beneficial to extending the service life of the water pump 12.

[0031] Specifically, Figure 1-Figure 3As shown, the extrusion device includes: a pair of pressing plates 22, a pressure sensor and a pair of push-pull devices 21, the pair of pressing plates 22 are respectively arranged on the opposite side walls in the detection box 1; the pair of push-pull devices 21 are respectively arranged on the opposite side walls of the detection box 1, one push-pull device 21 is connected to one pressing plate 22, and the push-pull device 21 is sealed and fixedly connected to the detection box 1. The pair of pressing plates 22 are pushed by the pair of push-pull devices 21 to clamp and squeeze the wiring harness 28 to be tested, so as to detect the temperature resistance of the wiring harness 28 to be tested. The pressure sensor is located at the connection between the pressing plate 22 and the push-pull device 21, and is used to detect the pushing pressure of the push-pull device 21 on the pressing plate 22, so that the extrusion force of the pressing plate 22 on the wiring harness 28 to be tested is constant each time, and the temperature resistance of the wiring harness 28 to be tested is reliably detected.

[0032] Specifically, Figure 1-Figure 3 As shown, the friction device includes: a three-axis translation device 54 and a conductive weight plate 55, the three-axis translation device 54 is arranged in the detection box 1; the conductive weight plate 55 is suspended and connected to the three-axis translation device 54 through an insulating suspension rope 59, and the three-axis translation device 54 drives the conductive weight plate 55 to move along the XYZ three axes, so that the conductive weight plate 55 slides against the wiring harness 28 to be tested; thereby detecting the weather resistance, wear resistance and leakage performance of the wiring harness 28 to be tested, and the conductive weight plate 55 does not contact other conductors except the wiring harness 28 to be tested.

[0033] In addition, if Figure 1-Figure 3 As shown, the harness quality detection equipment also includes a current detection device 48 and a power supply 47. The current detection device 48, the power supply 47 and the harness to be tested 28 are connected in series via the detection line 2 46. The conductive heavy plate 55 is connected to the detection line 2 46 via the detection line 3 56. When the harness to be tested 28 does not leak electricity or is not damaged, the current detection device 48, the power supply 47 and the harness to be tested 28 are connected in series via the detection line 2 46. The current detection device 48 can detect a constant current value. When the harness to be tested 28 leaks electricity or is damaged, the current value detected by the current detection device 48 changes, and the quality of the harness to be tested 28 can be judged based on this.

[0034] Further, such as Figure 3 As shown, a partition 2 is arranged in the detection box 1, and the partition 2 divides the detection box 1 into two parts, the upper part is chamber 1 3, and the lower part is chamber 2 4.

[0035] like Figure 3 , Figure 7 and Figure 8As shown, a through hole 5 is provided on the partition 2, and a pair of slide plates 8 are slidably installed on the upper surface of the partition 2. Further, in order to improve the sliding stability of the slide plate 8, a slide groove 6 is provided on the upper surface of the partition 2, and the slide plate 8 is horizontally slidably installed in the slide groove 6. The slide plate 8 is connected to the upper surface of the partition 2 in a sliding seal. The pair of slide plates 8 are arranged on both sides of the through hole 5. A push-pull device 7 is fixedly installed on the partition 2. The push-pull device 7 is connected to the slide plate 8. The push-pull device 7 drives the pair of slide plates 8 to move closer to or away from each other. The pair of slide plates 8 move closer to each other to move the through hole 5 The sealing makes chamber 1 3 and chamber 2 4 not connected to each other, so as to prevent the airflow, water vapor, light and high temperature in chamber 2 4 from entering chamber 1 3 through through hole 5 and affecting the life of the friction device. A pair of slide plates 8 are separated from each other to open the through hole 5, so that the conductive heavy plate 55 can be conveniently descended to pass through the through hole 5 and enter chamber 2 4 to slide against the wiring harness 28 to be tested for wear resistance testing. After the test is completed, the conductive heavy plate 55 rises and returns to chamber 1 3, and a pair of slide plates 8 are close to each other to seal the through hole 5. This design can effectively protect the friction device, avoid damage to the friction device caused by weather resistance experiments, and help to extend the service life of the friction device.

[0036] In this embodiment, if Figure 3 , Figure 7 and Figure 8 As shown, there are multiple nozzles 9, and the multiple nozzles 9 are evenly distributed on a pair of slides 8; the nozzle 9 is set through the slide 8, and the lower surface of the slide 8 is recessed inward to form a pit 11, and the nozzle 9 is located in the pit 11. This design can prevent the nozzle 9 from affecting the sliding of the slide 8 on the upper surface of the partition 2.

[0037] In this embodiment, if Figure 3 As shown, the three-axis translation device 54 is installed in chamber one 3, and the conductive heavy plate 55 descends through the through hole 5 to enter chamber two 4; some components of the blowing device, sun exposure device, rain shower device, and extrusion device, such as the pressing plate 22, heating lighting lamp 15, ultraviolet lamp 58, exhaust hole 20, nozzle two 17, and wiring harness 28 to be tested are located in chamber two 4, and the wiring harness 28 to be tested is tested in chamber two 4 for temperature resistance, weather resistance, wear resistance, and leakage performance.

[0038] Specifically, during the test, the wiring harness 28 to be tested is first installed and fixed in the chamber 2 4, and then the wiring harness 28 to be tested is blown by the nozzle 2 17. After a period of time, the blowing ends, and then the heating lighting lamp 15 and the ultraviolet lamp 58 are turned on to expose and heat the wiring harness 28 to the sun, and the heating temperature is set. After a period of time, the sun exposure and heating end. At this time, the push-pull device 21 is controlled to push a pair of pressing plates 22 to squeeze the wiring harness 28 to be tested that has just been heated. The pressing plate 22 is set to squeeze the wiring harness 28 to be tested. force, under the set extrusion force, observe whether the extrusion part of the upper pressing plate 22 of the tested wiring harness 28 is obviously deformed. If there is obvious deformation, it means that the insulation skin on the surface of the tested wiring harness 28 is severely softened at the heating temperature. At this time, if the heating temperature is further increased, the wiring harness has the risk of fire, that is, this heating temperature is the temperature resistance limit of the tested wiring harness 28. On the contrary, if the tested wiring harness 28 is not obviously deformed, it means that the heating temperature has not reached the temperature resistance limit of the tested wiring harness 28, and the tested wiring harness 28 has good temperature resistance performance; After the temperature resistance test is completed, the push-pull device 21 is controlled to reset, and then the water pump 12 is turned on to spray water to the wiring harness 28 to be tested through the nozzle 9. After a period of time, the rain ends, and then the wind blowing, sun exposure, heating, and rain are carried out in turn. The weather resistance test of the wiring harness 28 to be tested is repeated in this way. After a period of time, the weather resistance test is completed, and the wind blowing, sun exposure, heating, and rain are stopped. The push-pull device 7 is controlled to drive a pair of slides 8 to move away from each other to open the through hole 5, and then the three-axis translation device 54 is controlled to drive the conductive heavy plate 55 to move along the XYZ three axes so that the conductive heavy plate 55 descends through the through hole 5 and obliquely presses on the wiring harness 28 to be tested and moves against the wiring harness 28 to rub the wiring harness 28 to be tested. After rubbing for a period of time, the wear resistance test is completed, the wiring harness 28 to be tested is taken out, and the surface quality of the wiring harness 28 to be tested is observed. The quality, wear resistance and weather resistance of the wiring harness are judged according to the degree of wear of the insulation skin on the surface of the wiring harness 28 to be tested.

[0039] In addition, at the beginning of the test, the current detection device 48 starts to detect the current flowing through the detection line 246. During the temperature resistance test, weather resistance test and wear resistance test of the wiring harness 28 to be tested, the quality of the wiring harness is judged based on whether the current value detected by the current detection device 48 is stable. If the current value detected by the current detection device 48 remains constant throughout the entire test process, the temperature resistance, wear resistance and weather resistance of the wiring harness 28 to be tested are relatively excellent. If the current value detected by the current detection device 48 only follows the temperature resistance test stage, the quality of the wiring harness is judged based on whether the current value detected by the current detection device 48 is stable. If the current value detected by the current detection device 48 changes during the temperature test and the weather test, it means that the temperature resistance and weather resistance of the wiring harness 28 to be tested are not good. If the current value detected by the current detection device 48 during the wear test stage changes, it means that the wiring harness 28 to be tested is leaking, and part of the current flows through the conductive heavy plate 55 and the detection line three 56. Accordingly, the weather resistance and wear resistance of the wiring harness 28 to be tested are poor.

[0040] Further, such as Figure 3 and Figure 6 As shown, a wire drum 23 is installed on one side wall of the detection box 1 in a sealed manner, and the wire drum 23 is sealed and fixedly connected to the detection box 1. One end of the wire drum 23 is open, and an insulating partition 24 is arranged at the bottom of the wire drum 23. The middle part of the insulating partition 24 protrudes outward and penetrates the bottom of the wire drum 23. The insulating partition 24 is plugged and fixedly connected to the bottom of the wire drum 23. A side of the insulating partition 24 facing away from the bottom of the wire drum 23 is fixedly arranged. There is a conductive plate 25, and a conductive cylinder 26 is fixedly provided on the insulating partition 24, one end of the conductive cylinder 26 is tightly attached to the conductive plate 25, and the other end of the conductive cylinder 26 is tightly inserted with the detection line 46; the left end of the wiring harness 28 to be tested is tightly inserted into the wire cylinder 23 and is locked and fixed by a locking screw 30, and the wire core 29 at the left end of the wiring harness 28 to be tested can press against the conductive plate 25, thereby realizing a reliable electrical connection between the left end of the wiring harness 28 to be tested and the detection line 46.

[0041] Further, such as Figure 3-Figure 5 As shown, a wire drum 3 35 is provided on the other side wall of the detection box 1 opposite to the side wall where the wire drum 1 23 is located, and the wire drum 3 35 is slidably and rotatably connected to the side wall of the detection box 1. Specifically, as shown Figure 3 As shown, the bobbin 35 is coaxially and axially sleeved with a sleeve 36, a bearing 37 is fixedly provided on the side wall of the detection box 1, and the sleeve 36 is coaxially fixedly installed in the bearing 37. The right end of the bobbin 35 is rotatably connected with a push-pull device 3 42. Specifically, as shown in FIG. Figure 3As shown, the right end of the wire reel three 35 is coaxially fixedly sleeved with a sleeve second 45, the push-pull device three 42 has a mounting frame 43, a bearing second 44 is fixedly mounted on the mounting frame 43, the sleeve second 45 is coaxially fixedly mounted in the bearing second 44, the push-pull device three 42 is fixedly connected to the detection box 1 through the frame 41, and with this design, the wire reel three 35 can be pushed to slide axially through the push-pull device three 42 without affecting the rotation of the wire reel three 35.

[0042] In this embodiment, if Figure 3 As shown, a motor 40 is fixedly provided on the detection box 1, and a gear 39 is installed on the output shaft of the motor 40, and the gear 39 is meshed with a ring gear 38, and the ring gear 38 is axially slidably sleeved on the bobbin three 35, and the ring gear 38 and the bobbin three 35 are coaxial. With this design, the motor 40 can drive the bobbin three 35 to rotate after starting, and at the same time will not affect the axial sliding of the bobbin three 35.

[0043] In this embodiment, if Figure 3-Figure 5 As shown, the left end of the wire drum 35 is fixedly installed with the wire drum 2 31, one end of the wire drum 2 31 is open, the left end of the wire drum 35 passes through the bottom of the wire drum 2 31, the bottom of the wire drum 2 31 is fixedly provided with an insulating partition 2 33, a conductive plate 2 34 is detachably fixedly installed on the side of the insulating partition 2 33 facing away from the bottom of the wire drum 2 31, a conductive cylinder 2 49 is coaxially penetrated on the insulating partition 2 33, the conductive cylinder 2 49 is slidably and rotatably connected to the insulating partition 2 33, a mounting hole 1 51 is provided on the side of the insulating partition 2 33 facing the conductive plate 2 34, a mounting hole 2 52 is provided at the bottom of the mounting hole 1 51, a spring 53 is provided in the mounting hole 2 52, a conductive ring 50 is provided in the mounting hole 1 51, and the right side of the conductive ring 50 is in contact with the spring 53, And squeeze the spring 53, the left side of the conductive ring 50 is in contact with the conductive tube 49. With this design, the spring 53 is pressed to push one end of the conductive tube 49 to always keep in contact with the conductive plate 34, and is not affected by the wear of the left end of the conductive tube 49, thereby ensuring a stable and reliable electrical connection between the conductive tube 49 and the conductive plate 34. The right end of the conductive tube 49 is tightly inserted with the detection line 46, and the detection line 46 passes through the wire barrel 35; the right end of the wire harness 28 to be tested can be tightly inserted into the wire barrel 31 and locked and fixed by the locking screw 32, and the wire core 29 at the right end of the wire harness 28 to be tested can press against the conductive plate 34, thereby realizing a reliable electrical connection between the right end of the wire harness 28 to be tested and the detection line 46, and the twisting and bending of the wire harness 28 to be tested will not affect the electrical connection between the right end of the wire harness 28 to be tested and the detection line 46.

[0044] In this embodiment, in order to further improve the detection accuracy of the wire harness quality, during the temperature resistance test and weather resistance test of the wire harness 28 to be tested, the push-pull device three 42 can be controlled to push the wire reel three 35 to move axially to bend and straighten the wire harness 28 to be tested, and the motor 40 can be controlled to drive the wire reel three 35 to rotate to twist the wire harness 28 to be tested. This design makes the detection experiment environment more in line with the actual use of the wire harness, which is conducive to more accurate judgment of the quality of the wire harness.

[0045] In this embodiment, if Figure 1-Figure 3 As shown, a box cover 57 is detachably fixedly mounted on the upper end of the detection box 1. This design makes it convenient to take out the wiring harness 28 to be tested.

[0046] In addition, the present invention also proposes a wire harness quality detection method, which uses any of the above-mentioned wire harness quality detection devices to perform the following steps: S1, fix the wiring harness 28 to be tested in the detection box 1; S2, start the blowing device to blow air to the wiring harness 28 to be tested, and turn off the blowing device after a period of time; S3, start the sun exposure device to irradiate and heat the wire harness 28 to be tested, and turn off the sun exposure device after a period of time; S4, start the shower device to spray water to the wiring harness 28 to be tested, and turn off the shower device after a period of time; S5, repeat S2-S4; S6, after a period of time, start the friction device to rub the wiring harness 28 to be tested; During S7 and S2-S6, observe whether the current value detected by the current detection device 48 changes.

[0047] In this embodiment, during the process of S2-S4, the push-pull device 3 42 is controlled to push the wire drum 3 35 to move axially to bend the wire harness 28 to be tested, and the motor 40 is controlled to drive the wire drum 3 35 to rotate to twist the wire harness 28 to be tested.

[0048] In this embodiment, after the sun exposure device is started for the first time to irradiate and heat the test harness 28 for a period of time, the sun exposure device is turned off first, and then the extrusion device is started to extrude the test harness 28 to observe whether the extrusion part of the test harness 28 is deformed. After the extrusion device is reset, S4 is performed.

[0049] In this embodiment, S2-S7 can be automatically controlled by setting a control program on a computer to reduce manual involvement, improve detection efficiency, and reduce detection costs. After the experiment, the personnel take out the wiring harness 28 to be tested, inspect the wiring harness 28 to be tested with the naked eye, and judge the quality of the wiring harness 28 to be tested based on the current value detected by the current detection device 48.

[0050] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A wire harness quality inspection device, characterized in that: It includes a testing box and a blowing device, a sun exposure device, a rain shower device, a squeezing device, and a friction device arranged on the testing box. During testing, the wiring harness to be tested can be fixed in the testing box; The blowing device comprises: Nozzle 2 is arranged on the inner wall of the detection box and is used to blow air to the wiring harness to be tested. There are multiple nozzles 2, and the multiple nozzles 2 are connected through an air pipe; An air pump connected to an air pipe; The exhaust hole is located on the inner wall of the test box opposite to the second nozzle; The sun drying device comprises: A heating lighting lamp is arranged on the inner wall of the test box and is used to irradiate and heat the wire harness to be tested; An ultraviolet lamp is provided on the inner wall of the test box and is used to irradiate the wire harness to be tested; The shower device comprises: A nozzle 1 is arranged in the test box and is used to spray water to the wire harness to be tested, and the water sprayed by the nozzle 1 is gathered at the bottom of the test box; A water pump is arranged at the bottom of the detection box and is connected to the nozzle 1 through a water pipe; The extrusion device comprises: A pair of pressing plates are respectively arranged on two opposite side walls in the detection box; A pair of push-pull devices 2 are respectively arranged on two opposite side walls of the detection box and connected to the pressing plate. The pair of pressing plates are pushed by the pair of push-pull devices 2 to approach each other, clamp and squeeze the wiring harness to be tested; A pressure sensor is located at the connection between the pressure plate and the push-pull device 2; The friction device comprises: A three-axis translation device is provided in the detection box; A conductive weight plate, wherein the conductive weight plate is suspended and connected to a three-axis translation device through an insulating suspension rope, and the three-axis translation device drives the conductive weight plate to move along the XYZ three axes, so that the conductive weight plate slides against the wiring harness to be tested; The wire harness quality detection equipment also includes a current detection device and a power supply. The current detection device, the power supply and the wire harness to be tested are connected in series through a second detection line, and the conductive heavy plate is connected to the second detection line through a third detection line.

2. A wire harness quality inspection device as claimed in claim 1, characterized in that: A reflector is arranged on the inner wall of the detection box opposite to the heating illuminating lamp.

3. A wire harness quality inspection device as claimed in claim 1, characterized in that: A protective cover is fixedly installed at the bottom of the detection box, a water inlet hole is arranged on the protective cover, and the water pump is located inside the protective cover.

4. A wire harness quality inspection device as claimed in claim 1, characterized in that: A partition is provided in the detection box, and the partition divides the detection box into two parts, the upper part is chamber one, and the lower part is chamber two; The partition is provided with a through hole, a pair of slide plates are slidably mounted on the upper surface of the partition, and the pair of slide plates are respectively arranged on both sides of the through hole, and a push-pull device 1 is fixedly mounted on the partition, and the push-pull device 1 is connected to the slide plate, and the push-pull device 1 drives the pair of slide plates to move closer to or away from each other to block or open the through hole; There are multiple nozzles, and the multiple nozzles are evenly distributed on a pair of slides; The three-axis translation device is installed in chamber one, and the conductive heavy plate descends through the through hole into chamber two; The pressing plate, the heating lighting lamp, the ultraviolet lamp, the exhaust hole, the second nozzle, and the wiring harness to be tested are located in the second chamber.

5. A wire harness quality inspection device as claimed in claim 4, characterized in that: The lower surface of the slide plate is sunken inwards to form a pit, and the nozzle 1 is located in the pit.

6. A wire harness quality inspection device as claimed in claim 1, characterized in that: A wire drum 1 is installed through and sealed on one side wall of the detection box, one end of the wire drum 1 is open, an insulating partition 1 is arranged at the bottom of the wire drum 1, the middle part of the insulating partition 1 protrudes outward and passes through the bottom of the wire drum 1, a conductive plate 1 is arranged on the side of the insulating partition 1 facing away from the bottom of the wire drum 1, a conductive drum 1 is penetrated on the insulating partition 1, one end of the conductive drum 1 is tightly attached to the conductive plate 1, and the other end of the conductive drum 1 is tightly inserted with the detection wire 2; One end of the wire harness to be tested can be tightly inserted into the wire barrel, and the wire core of the wire harness to be tested can be pressed against the conductive plate.

7. A wire harness quality inspection device as claimed in claim 6, characterized in that: A wire drum 3 is provided on the other side wall of the detection box opposite to the side wall where the wire drum 1 is located, and the wire drum 3 is slidably and rotatably connected to the side wall of the detection box. One end of the wire drum 3 is rotatably connected to a push-pull device 3, and the push-pull device 3 is fixedly connected to the detection box, and the wire drum 3 is pushed to slide axially by the push-pull device 3; The detection box is provided with a motor, the output shaft of the motor is provided with a gear, the gear is meshed with a gear ring, the gear ring axially slides on the bobbin three, and the gear ring and the bobbin three are coaxial; The other end of the wire drum three is fixedly installed with the wire drum two, one end of the wire drum two is open, and the other end of the wire drum three passes through the bottom of the wire drum two, and the bottom of the wire drum inside the wire drum two is provided with an insulating partition plate two, and the side of the insulating partition plate two facing away from the bottom of the wire drum two is provided with a conductive plate two, and the insulating partition plate two passes through a conductive cylinder two, and the conductive cylinder two is slidably and rotatably connected with the insulating partition plate two, and a mounting hole one is provided on the side of the insulating partition plate two facing the conductive plate two, and a mounting hole two is provided at the bottom of the mounting hole one, and a spring is provided in the mounting hole two, and a conductive ring is provided in the mounting hole one, one side of the conductive ring contacts with the spring and squeezes the spring, and the other side of the conductive ring contacts with the conductive cylinder two, and the spring is pressed to push one end of the conductive cylinder two to always keep in contact with the conductive plate two, and the other end of the conductive cylinder two is tightly inserted with the detection line two, and the detection line two passes through the wire drum three; The other end of the wire harness to be tested can be tightly inserted into the second wire barrel, and the wire core of the wire harness to be tested can be pressed against the second conductive plate.

8. A wire harness quality detection method, characterized in that: The following steps are performed using the wire harness quality detection device according to any one of claims 1 to 7: S1. Fix the wiring harness to be tested in the test box; S2, start the blowing device to blow air to the wiring harness to be tested, and turn off the blowing device after a period of time; S3, start the sun exposure device to irradiate and heat the wiring harness to be tested, and turn off the sun exposure device after a period of time; S4, start the sprinkler device to spray water to the wiring harness to be tested, and turn off the sprinkler device after a period of time; S5, repeat S2-S4; S6. After a period of time, the friction device is started to rub the wiring harness to be tested; During S7 and S2-S6, observe whether the current value detected by the current detection device changes.

9. A wire harness quality detection method as claimed in claim 8, characterized in that: During the process of S2-S4, the push-pull device 3 is controlled to push the wire drum 3 to move axially so that the wire harness to be tested is bent, and the motor is controlled to drive the wire drum 3 to rotate so that the wire harness to be tested is twisted.

10. A wire harness quality detection method as claimed in claim 8, characterized in that: After the sun exposure device is started for the first time to irradiate and heat the wire harness to be tested for a period of time, the sun exposure device is turned off first, and then the extrusion device is started to extrude the wire harness to be tested, and whether the extrusion part of the wire harness to be tested is deformed is observed. After the extrusion device is reset, S4 is performed.

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