CN114459688B - Multi-parameter performance test method and test system for automobile wire harness - Google Patents
Multi-parameter performance test method and test system for automobile wire harness Download PDFInfo
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- CN114459688B CN114459688B CN202210024231.0A CN202210024231A CN114459688B CN 114459688 B CN114459688 B CN 114459688B CN 202210024231 A CN202210024231 A CN 202210024231A CN 114459688 B CN114459688 B CN 114459688B
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- 238000012360 testing method Methods 0.000 title claims abstract description 186
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000011056 performance test Methods 0.000 title claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 127
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000017525 heat dissipation Effects 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000013016 damping Methods 0.000 claims description 22
- 230000010355 oscillation Effects 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009514 concussion Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a multi-parameter performance test method and a test system for an automobile wire harness, wherein the test method comprises the steps of dividing the wire harness to be tested into a plurality of groups, wherein each group comprises a plurality of wire harnesses to be tested, each group comprises a supporting part, one end of each wire harness to be tested is hung on the supporting part, and the other end of each wire harness to be tested vertically sags; the supporting component is placed into the high-temperature test box in sequence after hanging a preset number of wire harnesses to be tested, and after the high-temperature test box is fully filled, the wire harnesses to be tested are heated and raised to a preset temperature until the high-temperature test is finished; after the high-temperature test is finished, opening a box door of the high-temperature test box, taking out a plurality of supporting components and the wire harness to be tested through a material taking mechanism, and performing air cooling or air cooling heat dissipation; and then, the waterproof performance and the low-temperature resistance of the wire harness to be tested are detected, so that the overall detection efficiency of the automobile wire harness can be improved.
Description
Technical Field
The invention belongs to the field of automobile wire harness detection, and particularly relates to an automobile wire harness multi-parameter performance test method and system.
Background
The wire harness provides service equipment for a certain load source group, and in modern automobiles, an electronic control system has close relation with the wire harness, and the requirements of the automobile wire harness, including electrical performance, waterproofness, heat resistance, low temperature resistance and the like, are higher than those of the general wire harness, and particularly, the requirements of safety are more strict.
At present, the detection of the automobile wire harness is respectively and independently carried out, so that the manual participation degree is high, the automation degree is insufficient, and the overall efficiency is low.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides the multi-parameter performance test method and the test system for the automobile wire harness, which can improve the overall detection efficiency of the automobile wire harness.
The technical scheme is as follows: in order to achieve the above purpose, the technical scheme of the invention is as follows:
a multi-parameter performance test method for an automobile wire harness comprises the following steps:
s1: the wire harness to be tested is divided into a plurality of groups, each group comprises a plurality of wire harnesses to be tested, each group comprises a supporting component, one end of each wire harness to be tested is hung on the supporting component, and the other end of each wire harness to be tested vertically sags;
s2: the supporting component is placed into the high-temperature test box in sequence after hanging a preset number of wire harnesses to be tested, and after the high-temperature test box is fully filled, the wire harnesses to be tested are heated and raised to a preset temperature until the high-temperature test is finished;
s3: after the high-temperature test is finished, opening a box door of the high-temperature test box, taking out a plurality of supporting components and the wire harness to be tested through a material taking mechanism, and performing air cooling or air cooling heat dissipation;
s4: when the temperature range of the wire harness to be tested is between 35 ℃ and 45 ℃, then detecting the waterproof performance of the wire harness to be tested;
s5: and after the waterproof performance test, sequentially carrying out air tightness detection and low-temperature tolerance detection on the test wire bundles.
Further, when waterproof performance is detected, two ends of the wire harness to be detected are respectively connected into the conduction test circuit system, the two ends of the wire harness to be detected are immersed into the test water tank, and the wire harness sections or the terminal connectors at the two ends of the wire harness to be detected are oscillated in a reciprocating mode through the oscillation mechanism.
Further, in the low-temperature resistance detection, the wire harness to be detected is placed in a low-temperature box and kept at a low temperature for a preset period of time, and then the wire harness to be detected is wound into a coil shape by winding operation.
The test system comprises a high-temperature test system, wherein the high-temperature test system comprises a high-temperature test box, guide cross bars, support plates and a material taking mechanism, wherein the guide cross bars are arranged in an inner cavity of the high-temperature test box close to the top wall, the two guide cross bars are symmetrically arranged on the two side walls respectively, a plurality of support plates are arranged on the guide cross bars in a guide sliding manner, the support plates are used for suspending one end of a wire harness to be tested, the material taking mechanism is arranged on the outer side of the high-temperature test box, and the support plates are sequentially taken out from the high-temperature test box through the material taking mechanism;
the material taking mechanism comprises a deflection frame, a deflection driving mechanism, a telescopic mechanism and a clamping mechanism, wherein the deflection frame is rotationally arranged on the outer side of the high-temperature test box in a vertical plane, the deflection frame is of an L-shaped rod body structure, one arm rod of the deflection frame is arranged corresponding to the opening side of the box door of the high-temperature test box, the other arm rod of the deflection frame is provided with the deflection driving mechanism, the deflection driving mechanism drives the deflection frame to rotate in the vertical plane, at least one group of telescopic mechanisms are arranged on the arm rod of the deflection frame corresponding to the opening side of the box door of the high-temperature test box, the telescopic direction of the telescopic mechanism is perpendicular to the installed arm rod, the clamping mechanism is arranged on the telescopic end of the telescopic mechanism, and the clamping mechanism stretches into or stretches out of the inner cavity of the high-temperature test box through the telescopic mechanism; the clamping mechanism is switched between the position corresponding to the opening side of the box body and the top of the high-temperature test box through the deflection frame.
Furthermore, the supporting plate is of a comb-tooth-shaped plate body structure, a plurality of mounting grooves are formed in the supporting plate in a penetrating mode, and the mounting grooves are arranged at intervals in the direction perpendicular to the sliding direction of the supporting plate; the wire harness to be tested is suspended on the supporting plate through the mounting groove.
Further, the device also comprises a cooling bracket mechanism arranged at the side of the opening of the box body corresponding to the high-temperature test box, wherein the cooling bracket mechanism is arranged in a far-near adjusting way relative to the high-temperature test box and is used for storing and erecting a supporting plate taken out by the material taking mechanism and a wire harness to be tested on the supporting plate;
the cooling support mechanism comprises a bottom support and two top guide rails which are arranged at the top of the bottom support at intervals in parallel, the length direction of the top guide rails is arranged along the telescopic direction of the telescopic mechanism, the top guide rails are obliquely arranged from the feeding end to the discharging end from high to low, and the bottom end sides of the top guide rails are provided with baffle plates; the support plate taken out by the material taking mechanism is erected on the two top guide rails.
Further, the waterproof test system comprises a waterproof test system, the waterproof test system comprises a test water tank and an oscillation mechanism, the test water tank comprises a test water cavity for containing water, a first test connector and a second test connector are arranged on the wall body of the test water tank in a penetrating mode, the first test connector and the second test connector are located in the test water tank, connectors at two ends of a wire harness to be tested are respectively connected to the first test connector and the second test connector, the oscillation mechanism is arranged above the test water tank, the oscillation end of the oscillation mechanism clamps the wire harness to be tested, and the wire harness to be tested oscillates in the test water cavity in a reciprocating mode through the oscillation mechanism;
the vibration mechanism comprises two groups of vibration assemblies which are respectively arranged corresponding to two ends of the wire harness to be tested, a clamping assembly for clamping the wire harness to be tested is arranged on the vibration end of the vibration assembly, and the clamping positions of the clamping assemblies are arranged at intervals on the wire end joint of the wire harness to be tested; the vibration mechanism drives two plug ends of the wire harness to be tested to vibrate in the test water tank.
Further, vibrate subassembly includes reciprocal actuating mechanism, mounting bracket and elastic component, the mounting bracket sets up on the test flume, elastic component elasticity flexible setting is on the mounting bracket in vertical direction, clamping component sets up on elastic component's flexible end, reciprocal actuating mechanism drive elastic component is in the reciprocal displacement of vertical direction.
Further, the low temperature resistance testing system comprises a low temperature box, a rotation mechanism, a winding assembly and a winding reel, wherein the winding assembly is rotatably arranged on the inner bottom wall of the low temperature box, the winding assembly is rotatably arranged through a vertical shaft, the middle section of a wire harness to be tested is arranged corresponding to the winding assembly, the wire harnesses of the wire harness to be tested positioned at two sides of the winding assembly are simultaneously wound through the winding assembly, the rotation mechanism is arranged on the low temperature box and drives the winding assembly to rotate, winding reels are coaxially arranged at the outer sides of the winding assemblies at intervals, the winding reels are relatively fixedly arranged on the low temperature box, a wire passing groove is formed in a penetrating manner in the radial direction on the winding reel, the wire passing groove extends upwards and forms a feeding notch for the wire harness to be tested to penetrate, and the wire harness to be tested transversely penetrates through the winding reel through the wire passing groove; the winding assembly enables the wire harness to be tested to be in a winding coil under a rotating state.
Further, a wire pressing assembly is arranged in the wire passing groove, and is in sliding displacement relative to the winding reel in the vertical direction, and the wire pressing assembly is arranged above the wire harness to be tested in a contact manner; the wire pressing assembly downwards presses the wire harness to be tested in the winding state;
the wire pressing assembly comprises a damping sliding seat, guide sliding grooves are formed in the damping sliding seat corresponding to two edges of the wire passing groove, the guide sliding grooves are arranged in a clearance mode with two side wall bodies of the wire passing groove, and the damping sliding seat is in damping sliding along the length direction of the wire passing groove;
an elastic body is arranged on one side of the damping sliding seat, corresponding to the guide sliding groove, the elastic direction of the elastic body is perpendicular to the axis of the winding reel, and the elastic body is elastically contacted with the wall body of the winding reel.
The beneficial effects are that: the test method of the invention has the following advantages:
(1) Through hang the pencil that awaits measuring erectly, can increase the quantity of holding of treating the pencil in the high temperature test box, reduce energy consumption, and carry high temperature test efficiency simultaneously, in addition, can make the pencil that awaits measuring be heated more evenly through the mode of vertical suspension, avoid local overheated phenomenon.
(2) Through high temperature test, waterproof performance test and low temperature resistance test to the pencil that awaits measuring in proper order, the process is arranged rationally, and the immersion fluid when passing through waterproof performance test can increase the cooling efficiency to the pencil that awaits measuring, shortens the turnover period of pencil that awaits measuring between different processes.
(3) Immersion liquid is carried out under the condition that the wire harness to be tested is still kept at high temperature, and the wading scene of the automobile wire harness in the working environment is truly simulated.
Drawings
FIG. 1 is a schematic overall flow chart of the test method of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the test system of the present invention;
FIG. 3 is a perspective view of the whole structure of the high temperature test system of the present invention;
FIG. 4 is an enlarged schematic view of a part A of the high temperature test system of the present invention;
FIG. 5 is a schematic view of the structure of the support plate of the present invention;
FIG. 6 is a schematic diagram of the internal structure of the waterproof test system according to the present invention;
FIG. 7 is an enlarged schematic view of a part B structure of the waterproof test system of the present invention;
FIG. 8 is a schematic diagram showing the internal structure of the low temperature resistance test system of the present invention;
FIG. 9 is an exploded schematic view of the low temperature resistance test system of the present invention;
fig. 10 is an enlarged schematic view of a wire pressing assembly of part C in the low temperature resistance test system of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in the attached figure 1, the multi-parameter performance test method of the automobile wire harness comprises the following steps:
s1: the wire harness to be tested is divided into a plurality of groups, each group comprises a plurality of wire harnesses to be tested, each group comprises a supporting component, one end of each wire harness to be tested is hung on the supporting component, and the other end of each wire harness to be tested vertically sags;
s2: the supporting component is placed into the high-temperature test box in sequence after hanging a preset number of wire harnesses to be tested, and after the high-temperature test box is fully filled, the wire harnesses to be tested are heated and raised to a preset temperature until the high-temperature test is finished;
s3: after the high-temperature test is finished, opening a box door of the high-temperature test box, taking out a plurality of supporting components and the wire harness to be tested through a material taking mechanism, and performing air cooling or air cooling heat dissipation;
s4: when the temperature range of the wire harness to be tested is between 35 ℃ and 45 ℃, then detecting the waterproof performance of the wire harness to be tested;
s5: and after the waterproof performance test, sequentially carrying out air tightness detection and low-temperature tolerance detection on the test wire bundles.
The test method of the invention has the following advantages:
(1) Through hang the pencil that awaits measuring erectly, can increase the quantity of holding of treating the pencil in the high temperature test box, reduce energy consumption, and carry high temperature test efficiency simultaneously, in addition, can make the pencil that awaits measuring be heated more evenly through the mode of vertical suspension, avoid local overheated phenomenon.
(2) Through high temperature test, waterproof performance test and low temperature resistance test to the pencil that awaits measuring in proper order, the process is arranged rationally, and the immersion fluid when passing through waterproof performance test can increase the cooling efficiency to the pencil that awaits measuring, shortens the turnover period of pencil that awaits measuring between different processes.
(3) And immersion liquid is carried out under the state that the wire harness to be tested is still kept at high temperature, so that the wading scene of the automobile wire harness in the working environment is truly simulated.
When the waterproof performance is detected, two ends of the wire harness to be detected are respectively connected into the conduction test circuit system, the two ends of the wire harness to be detected are immersed in the test water tank, and the wire harness sections or the terminal connectors at the two ends of the wire harness to be detected are oscillated in a reciprocating mode through the oscillation mechanism. When the waterproof performance is detected, the working environment of the wire harness still having a certain temperature is truly simulated through the aqueous solution, the waterproof performance of the heating wire harness in wading is reflected, the wire harness in the state is oscillated through the oscillation mechanism, the simulation degree of the real wading environment is improved, and the device is used for accurately testing the waterproof performance.
When the low-temperature tolerance is detected, the wire harness to be detected is placed in a low-temperature box and kept at a low temperature for a preset period of time, and then the wire harness to be detected is wound into a coil shape by winding operation. In a low-temperature state, the wire harness is hardened, and the wire harness to be tested is wound, so that whether the appearance of the wire harness is cracked or not is tested.
As shown in figure 2, the test system of the multi-parameter performance test method of the automobile wire harness comprises a high-temperature test system, a waterproof test system and a low-temperature resistance test system.
The high-temperature test system as shown in fig. 2-5 comprises a high-temperature test box 1, a guide cross rod 2, support plates 3 and a material taking mechanism 4, wherein the guide cross rod 2 is arranged in the inner cavity of the high-temperature test box 1 and close to the top wall, the two guide cross rods 2 are symmetrically arranged on the two side walls respectively, a plurality of support plates 3 are arranged on the guide cross rods 2 in a guide sliding manner, the support plates 3 are used for suspending one end of a wire harness 10 to be tested, the material taking mechanism 4 is arranged on the outer side of the high-temperature test box 1, and the support plates 3 are sequentially taken out from the high-temperature test box 1 through the material taking mechanism 4; the wire harness 10 to be tested is suspended through the supporting plate 3, so that the space utilization rate in the heating cavity can be improved, the overall efficiency is improved, and compared with the wire harness carried by the tray in the prior art, the wire harness to be tested is heated unevenly.
The material taking mechanism 4 comprises a deflection frame 11, a deflection driving mechanism 12, a telescopic mechanism 13 and a clamping mechanism 14, wherein the deflection frame 11 is rotationally arranged on the outer side wall body of the high-temperature test box 1 in a vertical plane, the deflection frame 11 is of an L-shaped rod body structure, one arm rod of the deflection frame 11 is arranged corresponding to the opening side of the box door of the high-temperature test box 1, the other arm rod of the deflection frame 11 is provided with the deflection driving mechanism 12, the deflection frame 11 is adjusted in a vertical plane through the deflection driving mechanism 12, at least one group of telescopic mechanisms 13 are arranged on the arm rod of the deflection frame 11 corresponding to the opening side of the box door of the high-temperature test box, the telescopic direction of the telescopic mechanisms is perpendicular to the arm rod arranged, the telescopic mechanisms 13 are just arranged corresponding to the opening side of the box body of the high-temperature test box 1, the clamping mechanism 14 is arranged on the telescopic end of the telescopic mechanisms 13, and the clamping mechanism 14 stretches into or stretches out of the inner cavity of the high-temperature test box 1 through the telescopic mechanisms 13; the clamping mechanism 14 is switched by the deflection frame 11 in a position directly corresponding to the open side of the tank and the top of the high temperature test tank 1. When the box door is closed, heating is started in the heating cavity, and at the moment, the deflection frame 11 rotates above the high-temperature test box 1 through the deflection driving mechanism 12, so that the box door is prevented from being opened; when the box door is opened, the wire harness is required to be taken out after the heating is completed, and at the moment, the deflection frame 11 rotates to the opening side of the box body through the deflection driving mechanism, so that the deflection frame 11 has at least two position states so as to avoid the opening and closing of the box door.
The deflection frame 11 is of an L-shaped rod body structure, the deflection frame 11 comprises a swinging arm 11a rotatably arranged on the side wall of the high-temperature test box and a mounting arm 11b arranged on one end of the swinging arm 11a, the swinging arm 11a is arranged on one side deviating from a box door, and the other end of the swinging arm 11a is correspondingly arranged with the deflection driving mechanism 12. The middle section shaft of the rod body of the swing arm 11a of the deflection frame 11 rotates to set the side wall of the high-temperature test box 1, one end of the swing arm is provided with a deflection driving mechanism 12, the deflection driving mechanism 12 is a telescopic cylinder, one end of the deflection driving mechanism is hinged to the box wall of the high-temperature test box 1, the other end of the deflection driving mechanism is hinged to the end of the swing arm 11a, the installation arm 11b of the deflection frame 11 is parallel to the opening side of the high-temperature test box 1, and the telescopic mechanism 13 is arranged on the installation arm.
The side wall of the high-temperature test box 1 is provided with a rotary positioning block 15 corresponding to the swing arm 11a, and when the swing arm 11a rotates to the rotary positioning block 15, the clamping mechanism 14 corresponds to the support plate 3, and the rotary positioning block 15 is used for positioning and supporting the deflection frame 11.
The support plate 3 is of a comb-tooth-shaped plate body structure, a plurality of mounting grooves 5 are formed in the support plate 3 in a penetrating manner, the mounting grooves 5 are arranged at intervals in the direction perpendicular to the sliding direction of the support plate, and one side of each mounting groove 5 extends outwards in the sliding direction of the support plate and forms an open opening; the wire harness 10 to be tested is suspended on the supporting plate 3 through the mounting groove 5. An elastic bulge 7 is arranged on the inner side of the opening side of the mounting groove 5; the wire harness to be tested is limited in the mounting groove through the elastic bulge 7, and the elastic bulge 7 is a metal elastic sheet and the like and is used for preventing the wire harness from slipping.
The deflection frame 11 is of an L-shaped rod body structure, the deflection frame 11 comprises a swinging arm 11a rotatably arranged on the side wall of the high-temperature test box and a mounting arm 11b arranged on one end of the swinging arm 11a, the swinging arm 11a is arranged on one side deviating from a box door, and the other end of the swinging arm 11a is correspondingly arranged with the deflection driving mechanism 12. The middle section shaft of the rod body of the swing arm 11a of the deflection frame 11 rotates to set the side wall of the high-temperature test box 1, one end of the swing arm is provided with a deflection driving mechanism 12, the deflection driving mechanism 12 is a telescopic cylinder, one end of the deflection driving mechanism is hinged to the box wall of the high-temperature test box 1, the other end of the deflection driving mechanism is hinged to the end of the swing arm 11a, the installation arm 11b of the deflection frame 11 is parallel to the opening side of the high-temperature test box 1, and the telescopic mechanism 13 is arranged on the installation arm.
The side wall of the high-temperature test box 1 is provided with a rotary positioning block 15 corresponding to the swing arm 11a, and when the swing arm 11a rotates to the rotary positioning block 15, the clamping mechanism 14 corresponds to the support plate 3, and the rotary positioning block 15 is used for positioning and supporting the deflection frame 11.
The device also comprises a cooling bracket mechanism arranged corresponding to the opening side of the box body of the high-temperature test box 1, wherein the cooling bracket mechanism is arranged in a far-near adjusting way relative to the high-temperature test box 1 and is used for storing and erecting a supporting plate taken out by the material taking mechanism 4 and a wire harness 10 to be tested on the supporting plate; the cooling support mechanism comprises a bottom support 16 and two top guide rails 17 which are arranged at the top of the bottom support 16 in parallel at intervals, the bottom support 16 comprises a plurality of upright posts for supporting the top guide rails 17, the length direction of the top guide rails 17 is arranged along the expansion direction of the expansion mechanism 13, the top guide rails 17 are obliquely arranged from the feeding end to the discharging end from high to low, and baffle plates 18 are arranged at the bottom end sides of the top guide rails 17; the support plate taken out by the material taking mechanism is erected on the two top guide rails.
As shown in fig. 6 and fig. 7, the waterproof test system includes a test water tank 21, a first test connector 22, a second test connector 23 and an oscillation mechanism, the test water tank 21 includes a test water cavity 25 for containing water, the first test connector 22 and the second test connector 23 respectively penetrate through a wall body of the test water tank 21 and then extend into the test water cavity 25, the first test connector 22 and the second test connector 23 respectively are test connectors in the test machine system and are used for connecting a wire harness to be tested into a test circuit, the first test connector 22 and the second test connector 23 respectively extend from the wall body of the test water tank 21 to the test water cavity, the first test connector 22 and the second test connector 23 are respectively connected to two end connectors of the wire harness 10 to be tested, the oscillation mechanism is arranged above the test water tank 21, an oscillation end of the oscillation mechanism clamps the wire harness 10 to be tested, and the wire harness 10 to be tested reciprocates in the test water cavity 25 through the oscillation mechanism. Through test basin 21 and concussion mechanism, can simulate the operational environment of test pencil under the state of concussion wading to carry out waterproof test to the car pencil under this state, make the waterproof performance test that the pencil connects out more accurate.
The vibration mechanism comprises two groups of vibration assemblies 24, the two groups of vibration assemblies 24 are respectively arranged corresponding to two ends of the wire harness 10 to be tested, a clamping assembly 26 used for clamping the wire harness 10 to be tested is arranged at the vibration end of the vibration assembly 24, the wire harness to be tested is clamped by the clamping assembly 26, the clamping position interval of the clamping assembly 26 is arranged at the wire end joint of the wire harness to be tested, and the vibration mechanism drives two plug ends of the wire harness to be tested to vibrate in the test water tank. After the two connectors of the wire harness 10 to be tested are connected with the first test connector and the second test connector, the vibration assembly is used for vibrating the two connectors respectively, so that the real wading environment is simulated, and the waterproof performance of the wire harness connectors is tested.
The vibration assembly 24 comprises a reciprocating driving mechanism 27, a mounting frame 28 and an elastic assembly 29, the mounting frame 28 is arranged on the test water tank 21, the elastic assembly 29 is elastically telescopic in the vertical direction and arranged on the mounting frame 28, the clamping assembly 26 is arranged on the telescopic end of the elastic assembly 29, and the reciprocating driving mechanism 27 drives the elastic assembly to reciprocate.
The elastic component 29 includes movable rod 31 and cover are established reset spring 32 on the movable rod 31, the movable rod 31 activity wears to establish on the mounting bracket 28, just the one end of movable rod 31 passes through reset spring 32 to be connected on the mounting bracket 28, the one end of movable rod 31 is provided with clamping assembly 26, and the other end corresponds to reciprocating drive mechanism setting, reciprocating drive mechanism 27 is cam drive mechanism, contains the motor and sets up the cam on the motor shaft. The movable lever 31 is driven back and forth by a cam driving mechanism.
The clamping assembly 26 comprises a clamp 33 and a locking rod 34, the clamp 33 is of a block-shaped structure with a U-shaped shape, the clamp 33 comprises a clamping groove, the locking rod 34 is arranged on one arm body of the clamp 33 in a penetrating mode corresponding to the clamping groove, and the locking rod 34 is a screw rod and is simple in structure and convenient to operate.
The upper side of test basin 21 can be detachable be provided with apron 35, just apron 35 and test basin 21 seal arrangement, be provided with supercharging device 36 on the apron 35, carry out the pressure boost to the test intracavity through supercharging device 36 to further test is under the high pressure state, and the waterproof performance of pencil joint.
As shown in fig. 8 to 10, the low temperature resistance test system comprises a low temperature box 41, a rotary mechanism 42, a winding assembly 43 and a winding reel 44, wherein a refrigerator 40 is arranged on the low temperature box 41, the winding assembly 43 is rotatably arranged on the inner bottom wall of the low temperature box 41, the middle section of the wire harness to be tested 10 is arranged corresponding to the winding assembly 43, the wire harnesses on two sides of the winding assembly of the wire harness to be tested 10 are simultaneously wound through the winding assembly, the winding assembly 43 is rotatably arranged on a vertical shaft, the rotary mechanism 42 is arranged on the low temperature box 41 corresponding to the winding assembly 43, the rotary mechanism 42 is a rotary motor, the winding reel 44 is coaxially arranged on the outer side of the winding assembly 43 at intervals, the winding reel 44 is relatively fixedly arranged on the low temperature box 41, the winding reel 44 is of an upward opening cylindrical structure, a winding cavity is formed between the winding reel 44 and the winding assembly 43, a wire passing groove 45 is formed in a penetrating way in the radial direction on the winding reel 44 and is upward and forms a feeding notch for the wire harness to be tested 10 to penetrate through the wire harness to be tested, and the wire harness to be tested 10 passes through the winding assembly 44; the winding assembly 43 makes the wire harness 10 to be tested take a winding shape coil in a rotating state. Firstly, the wire harness 10 to be tested is straightened and then put into a low-temperature box, the wire harness 10 to be tested passes through a winding reel 44 through a wire passing groove 45, the middle section position of the wire harness 10 to be tested corresponds to a winding assembly 43, then the low-temperature box is cooled and kept for a preset time, the wire harness in a low-temperature state is wound through the winding assembly 43, and the winding resistance in the low-temperature environment is used for detecting, so that whether the outer layer of the wire harness is cracked or not is observed, and whether the wire harness can be normally used after being wound at a low temperature or not is also observed, and the detection accuracy is improved.
The winding assembly 43 comprises a winding rod 46 and a rotating shaft 47 arranged on the winding rod 46, the winding rod 46 is of a U-shaped rod body structure with an upward opening, an opening groove of the winding rod 46 is larger than the diameter of the wire harness 10 to be tested, and the winding assembly is simple in structure, convenient to operate and capable of guiding and accommodating the wire harness in a winding state through the winding reel 44.
A wire pressing assembly 48 is arranged in the wire passing groove 45, the wire pressing assembly 48 slides and moves relative to the winding reel 44 in the vertical direction, and the wire pressing assembly 48 is arranged above the wire harness 10 to be tested in a contact manner; the wire pressing assembly 48 presses down the wire harness 10 to be tested in the winding state, so that the wire harness located on the outer side of the winding reel 44 can be pressed by the wire pressing assembly 48 when the wire harness to be tested is wound, excessive tilting of the wire harness is prevented, and the wire harness is ensured to be normally wound on the winding assembly.
As shown in fig. 10, the wire pressing assembly 48 includes a damping sliding seat 51, the damping sliding seat 51 has a block structure, the damping sliding seat 51 is provided with guide sliding grooves 52 corresponding to two edges of the wire passing groove 45, the guide sliding grooves 52 are arranged with two side wall gaps of the wire passing groove 45 and are used for guiding the damping sliding seat 51, the damping sliding seat 51 is arranged in the wire passing groove in a damping sliding manner, when the wire harness is wound, the damping sliding seat is enabled to be displaced upwards by the pulling force of the wire harness, the downward pressing force of the damping sliding seat 51 is provided by the friction force of the damping sliding, the wire harness can normally rise, and the wire harness can be prevented from excessively rising and sliding out of the wire passing groove.
An elastic body 53 is disposed on the damping sliding seat 51 at a side corresponding to the guiding chute 52, the elastic direction of the elastic body 53 is perpendicular to the axis of the bobbin 44, and the elastic body 53 elastically contacts with the wall of the bobbin 44. The elastic body 53 is a return spring or a rubber pad.
The damping sliding seat 51 is provided with a mounting hole 54 corresponding to the elastic body 53, the mounting hole 54 is axially provided with an adjusting cylinder 55 along the hole, the opening side of the adjusting cylinder 55 is corresponding to the mounting hole, the adjusting cylinder 55 is arranged in the axial direction of the mounting hole in a displacement adjusting mode relative to the damping sliding seat, the elastic body 53 is arranged in the adjusting cylinder 55, the degree of pressing of the elastic body 53 against the wall body of the winding cylinder 4 can be adjusted through the adjusting function of the adjusting cylinder 55, and then the friction force of the elastic body 53 and the wall body of the winding cylinder 4 is adjusted. Wherein, the outer wall of the adjusting cylinder 55 comprises an external thread section, and the mounting hole 54 is an internal thread hole.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (9)
1. A multi-parameter performance test method for an automobile wire harness is characterized by comprising the following steps of: the method comprises the following steps:
s1: the wire harness to be tested is divided into a plurality of groups, each group comprises a plurality of wire harnesses to be tested, each group comprises a supporting component, one end of each wire harness to be tested is hung on the supporting component, and the other end of each wire harness to be tested vertically sags;
s2: the supporting component is placed into the high-temperature test box in sequence after hanging a preset number of wire harnesses to be tested, and after the high-temperature test box is fully filled, the wire harnesses to be tested are heated and raised to a preset temperature until the high-temperature test is finished;
s3: after the high-temperature test is finished, opening a box door of the high-temperature test box, taking out a plurality of supporting components and the wire harness to be tested through a material taking mechanism, and performing air cooling or air cooling heat dissipation;
s4: when the temperature range of the wire harness to be tested is between 35 ℃ and 45 ℃, then detecting the waterproof performance of the wire harness to be tested;
s5: after the waterproof performance test, sequentially performing air tightness detection and low-temperature tolerance detection on the test wire bundle;
when the waterproof performance is detected, two ends of the wire harness to be detected are respectively connected into the conduction test circuit system, the two ends of the wire harness to be detected are immersed in the test water tank, and the wire harness sections or the terminal connectors at the two ends of the wire harness to be detected are oscillated in a reciprocating mode through the oscillation mechanism.
2. The method for testing the multiparameter performance of the automobile wire harness according to claim 1, wherein the method comprises the following steps of: when the low-temperature tolerance is detected, the wire harness to be detected is placed in a low-temperature box and kept at a low temperature for a preset period of time, and then the wire harness to be detected is wound into a coil shape by winding operation.
3. The method for testing the multiparameter performance of the automobile wire harness according to claim 2, wherein the method comprises the following steps of: the testing system of the testing method comprises a high-temperature testing system, wherein the high-temperature testing system comprises a high-temperature testing box (1), guide cross rods (2), supporting plates (3) and a material taking mechanism (4), the guide cross rods (2) are arranged in an inner cavity of the high-temperature testing box (1) close to the top wall, the two guide cross rods (2) are respectively symmetrically arranged on the two side walls, a plurality of supporting plates (3) are arranged on the guide cross rods (2) in a guiding sliding manner, the supporting plates (3) are used for suspending one end of a wire harness (10) to be tested, the material taking mechanism (4) is arranged on the outer side of the high-temperature testing box (1), and the supporting plates (3) are sequentially taken out from the high-temperature testing box (1) through the material taking mechanism (4);
the material taking mechanism (4) comprises a deflection frame (11), a deflection driving mechanism (12), a telescopic mechanism (13) and a clamping mechanism (14), wherein the deflection frame (11) is rotationally arranged on the outer side of the high-temperature test box (1) in a vertical plane, the deflection frame (11) is of an L-shaped rod body structure, one arm rod of the deflection frame (11) is arranged corresponding to the opening side of the box door of the high-temperature test box (1), the other arm rod of the deflection frame (11) is provided with the deflection driving mechanism (12), the deflection driving mechanism (12) drives the deflection frame to rotate in the vertical plane to adjust the rotating position, the arm rod of the deflection frame (11) corresponding to the opening side of the box door of the high-temperature test box is provided with at least one group of telescopic mechanisms (13), the telescopic direction of the telescopic mechanisms is perpendicular to the installed arm rod, the telescopic end of the telescopic mechanisms (13) is provided with the clamping mechanism (14), and the clamping mechanism (14) stretches into or stretches out of the inner cavity of the high-temperature test box (1) through the telescopic mechanisms (13); the clamping mechanism (14) is switched by the deflection frame (11) at a position corresponding to the opening side of the box body and the top of the high-temperature test box (1).
4. A method for testing the multiparameter performance of an automobile wire harness according to claim 3, wherein the method comprises the following steps: the support plate (3) is of a comb-tooth-shaped plate body structure, a plurality of mounting grooves (5) are formed in the support plate (3) in a penetrating mode, and the mounting grooves (5) are arranged at intervals in the direction perpendicular to the sliding direction of the support plate; the wire harness (10) to be tested is suspended on the supporting plate (3) through the mounting groove (5).
5. A method for testing the multiparameter performance of an automobile wire harness according to claim 3, wherein the method comprises the following steps: the device also comprises a cooling bracket mechanism arranged at the side of the opening of the box body corresponding to the high-temperature test box (1), wherein the cooling bracket mechanism is arranged in a far-near adjusting way relative to the high-temperature test box (1) and is used for storing and erecting a supporting plate taken out by the material taking mechanism (4) and a wire harness (10) to be tested on the supporting plate;
the cooling support mechanism comprises a bottom support (16) and two top guide rails (17) which are arranged at the top of the bottom support (16) at intervals in parallel, the length direction of the top guide rails (17) is arranged along the telescopic direction of the telescopic mechanism (13), the top guide rails (17) are obliquely arranged from high to low from a feeding end to a discharging end, and baffle plates (18) are arranged at the bottom end sides of the top guide rails (17); the support plate taken out by the material taking mechanism is erected on the two top guide rails.
6. The method for testing the multiparameter performance of the automobile wire harness is implemented, and is characterized in that: the waterproof test system comprises a test water tank (21) and an oscillation mechanism, wherein the test water tank (21) comprises a test water cavity (25) for containing water, a first test connector (22) and a second test connector (23) are arranged on the wall body of the test water tank (21) in a penetrating mode, the first test connector (22) and the second test connector (23) are located in the test water tank, connectors at two ends of a wire harness (10) to be tested are respectively connected to the first test connector (22) and the second test connector (23), the oscillation mechanism is arranged above the test water tank (21), the oscillation end of the oscillation mechanism clamps the wire harness (10) to be tested, and the wire harness (10) to be tested oscillates in the test water cavity (25) in a reciprocating mode through the oscillation mechanism;
the vibration mechanism comprises two groups of vibration assemblies (24) which are respectively arranged corresponding to two ends of the wire harness (10) to be tested, a clamping assembly (26) for clamping the wire harness to be tested is arranged at the vibration end of the vibration assembly (24), and the clamping positions of the clamping assemblies (26) are arranged at intervals at the wire end joint of the wire harness to be tested; the vibration mechanism drives two plug ends of the wire harness to be tested to vibrate in the test water tank.
7. The method for testing the multiparameter performance of the automobile wire harness according to claim 6, wherein the method comprises the following steps of: the vibration assembly (24) comprises a reciprocating driving mechanism (27), a mounting frame (28) and an elastic assembly (29), the mounting frame (28) is arranged on the test water tank (21), the elastic assembly (29) is elastically telescopic in the vertical direction and arranged on the mounting frame (28), the clamping assembly (26) is arranged at the telescopic end of the elastic assembly (29), and the reciprocating driving mechanism (27) drives the elastic assembly to reciprocate in the vertical direction.
8. A test system for implementing the multi-parameter performance test method of an automotive wiring harness of claim 7, characterized in that: the low-temperature resistance testing system comprises a low-temperature box (41), a rotary mechanism (42), a winding assembly (43) and a winding reel (44), wherein the winding assembly (43) is rotationally arranged on the inner bottom wall of the low-temperature box (41), the winding assembly (43) is rotationally arranged in a vertical shaft, the middle section of a wire harness (10) to be tested is arranged corresponding to the winding assembly (43), the wire harnesses on two sides of the winding assembly are simultaneously wound through the winding assembly, the rotary mechanism (42) is arranged on the low-temperature box (41) and drives the winding assembly (43) to rotate, the winding reel (44) is coaxially and fixedly arranged on the outer side of the winding assembly (43) at intervals, a wire passing groove (45) is formed in a penetrating manner on the winding reel (44) in the radial direction, the wire passing groove (45) extends upwards and forms a feeding notch for the wire harness to be tested, and the wire harness (10) to be tested transversely passes through the winding reel (44) through the wire passing groove (45); the winding assembly (43) enables the wire harness (10) to be measured to be a winding coil in a rotating state.
9. The test system of the automobile wire harness multi-parameter performance test method according to claim 8, wherein: a wire pressing assembly (48) is arranged in the wire passing groove (45), the wire pressing assembly (48) slides and moves relative to the winding drum (44) in the vertical direction, and the wire pressing assembly (48) is arranged above the wire harness (10) to be tested in a contact manner; the wire pressing assembly (48) downwards presses the wire harness (10) to be tested in the winding state;
the wire pressing assembly (48) comprises a damping sliding seat (51), guide sliding grooves (52) are formed in the damping sliding seat (51) corresponding to two edges of the wire passing groove (45), the guide sliding grooves (52) are arranged with two side wall bodies of the wire passing groove (45) in a clearance mode, and the damping sliding seat (51) is in damping sliding along the length direction of the wire passing groove (45);
an elastic body (53) is arranged on one side, corresponding to the guide chute (52), of the damping sliding seat (51), the elastic direction of the elastic body (53) is perpendicular to the axis of the winding drum (44), and the elastic body (53) is elastically contacted with the wall body of the winding drum (44).
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