Automobile wire harness heat shrink tube threading auxiliary device and wire harness processing method

Abstract

The invention discloses a threading auxiliary device for an automobile wire harness heat shrink tube. The threading auxiliary device comprises a workbench, a pay-off mechanism, a movable wire grabbing mechanism, a wire harness clamping mechanism, a heat shrink tube feeding mechanism, a welding workbench and an industrial personal computer. The two sides of the workbench are each provided with a plurality of sets of pay-off mechanisms, and a movable wire grabbing mechanism is arranged below the pay-off mechanism on each side. The pay-off mechanism comprises a pay-off bucket and an overturning assembly A, and the movable wire grabbing mechanism comprises a linear module A; the wire harness clamping mechanism comprises a linear module B, the linear module B is provided with two sliding platforms, the heat shrink tube feeding mechanism comprises a heat shrink tube hopper, a heat shrink tube clamp and an overturning assembly B, and welding clamps are arranged on the two sides of the welding workbench. According to the device and the processing method, multiple strands of wire harnesses can be twisted into a wire harness set, processing of the wire harnesses is completed under the cooperation of the welding workbench, the production efficiency can be greatly improved, and the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to automobile wiring harness processing equipment, and in particular to an automobile wiring harness heat shrink tube threading auxiliary device and a wiring harness processing method. Background Art

[0002] Cable harnesses are the most common connection lines in the electrical field. Harnesses are mainly used for electrical connections at multiple points. Harnesses include multiple strands of wire. One end of the strands is welded together, and the other ends are connected to other devices or electrical equipment that need to be connected.

[0003] In the prior art, the cable harness set includes multiple strands of wires, and the specific number of the harnesses is selected according to the needs. During processing, the harness is generally divided into two groups manually, and then the ends of the two groups of harnesses are welded together using an ultrasonic welding machine. For example, when processing an automobile harness, there are four strands of wire on the left side of the welding point and three strands of wire on the right side. During processing, the four strands of wire are manually closed, and the three strands of wire are manually closed, and then they are placed together on a welding workbench for welding. This process is all done manually, and the processing efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to provide an auxiliary device for threading a heat shrink tube of an automobile wiring harness, which can improve the automation degree of wiring harness welding and improve work efficiency.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides an automotive wiring harness heat shrink tube threading auxiliary device, comprising: a workbench, a wire release mechanism, a mobile wire grabbing mechanism, a wire harness clamping mechanism, a heat shrink tube feeding mechanism, a welding workbench and an industrial computer;

[0006] Several sets of wire-releasing mechanisms are arranged on both sides of the workbench. A movable wire-catching mechanism is arranged under the wire-releasing mechanism on each side. A wire harness clamping mechanism is arranged at the end of each movable wire-catching mechanism. A heat shrink tube feeding mechanism and a welding workbench are arranged between the two wire harness clamping mechanisms.

[0007] The wire-releasing mechanism includes a wire-releasing bucket and a flip assembly A. An intermediate plate is provided below the wire-releasing bucket, and two wire-catching clamps are arranged on the intermediate plate. The flip assembly A drives the intermediate plate to rotate the wire-catching clamps.

[0008] The mobile thread grabbing mechanism includes a linear module A, a telescopic rod is installed on the sliding seat of the linear module A, and a mobile clamp is installed on the telescopic rod;

[0009] The harness clamping mechanism includes a linear module B, which has two sliding platforms, namely a front sliding platform and a rear sliding platform; a harness clamp and a support frame are installed on the front sliding platform, and a harness clamp is installed on the rear sliding platform; the end of the linear module B close to the welding workbench is a hollow structure, and a stranding mechanism is arranged in the hollow structure; the stranding mechanism includes a lift, a rotating motor is installed on the lift, a turntable is installed on the rotating motor, and a pneumatic chuck clamp is installed on the turntable;

[0010] The heat shrink tube feeding mechanism is arranged on the inner side of one of the harness clamping mechanisms, and the heat shrink tube feeding mechanism includes a heat shrink tube hopper, a heat shrink tube fixture and a flip assembly B. A material distribution wheel is arranged inside the heat shrink tube hopper, and the material distribution wheel is equipped with a material distribution motor. The flip assembly B is connected to the heat shrink tube fixture and drives the heat shrink tube fixture to rotate. The clamping position of the heat shrink tube fixture corresponds to the discharge port of the heat shrink tube hopper.

[0011] Welding fixtures are arranged on both sides of the welding workbench.

[0012] One of the preferred solutions of the present invention is that two vertical plates are arranged on the workbench, the wire-releasing mechanism is fixed on the vertical plates, a heat shrink tube feeding mechanism and a welding workbench are arranged between the two vertical plates, and a notch is arranged at the lower part of the vertical plates.

[0013] One of the preferred solutions of the present invention is that the top of the wire-laying bucket is in a V-shaped structure, the bottom of the V-shaped structure has a channel, and a vibrator is arranged on the outer wall of the channel;

[0014] The flip assembly A is a motor flip structure, and the rotating shaft of the motor flip structure is connected to the middle plate to drive the wire grabbing clamp to flip; the wire grabbing clamp is a pneumatic clamp, and the clamping position of the wire grabbing clamp corresponds to the channel of the wire release bucket.

[0015] One of the preferred solutions of the present invention is that the movable clamp of the movable thread-grasping mechanism is a finger cylinder, and the finger cylinder is provided with two parallel inclined plane air claws.

[0016] One of the preferred solutions of the present invention is that an auxiliary clamp is provided in the middle of the wire harness clamping mechanism.

[0017] One of the preferred solutions of the present invention is that the heat shrink tube clamp is a finger cylinder, and the finger cylinder is equipped with two semicircular arc air claws.

[0018] One of the preferred solutions of the present invention is that a photoelectric sensor is arranged in the channel of the wire unwinding bucket, a photoelectric sensor is arranged under the wire grabbing clamp, a photoelectric sensor is configured for the wire harness clamping mechanism, a photoelectric sensor is arranged in the channel of the heat shrink tube hopper, and a photoelectric sensor is arranged on the welding workbench.

[0019] One of the preferred solutions of the present invention is that the turning assembly A of the wire-releasing mechanism is equipped with a turning controller, and the wire-catching clamp is equipped with a clamp control unit;

[0020] The linear module A of the mobile thread grabbing mechanism is equipped with a module controller, the telescopic rod of the mobile thread grabbing mechanism is an automatic telescopic rod, the automatic telescopic rod is equipped with a telescopic controller, and the mobile clamp is equipped with a clamp control unit;

[0021] The linear module B of the harness clamping mechanism is equipped with a module controller, the harness clamp is equipped with a clamp control unit, the elevator of the stranding mechanism is equipped with a lift controller, the rotary motor is equipped with a rotary motor controller, and the pneumatic chuck clamp is equipped with a clamp control unit;

[0022] The industrial computer is connected with all the flip controllers, fixture control units, module controllers, telescopic controllers, lifting controllers, and rotating motor controllers respectively.

[0023] The present invention also discloses a wiring harness processing method based on the automobile wiring harness heat shrink tube threading auxiliary device, comprising the following steps:

[0024] Step S1, setting the wire harness processing mode through the industrial computer, the wire harness processing mode includes the use position and quantity of the wire release mechanism on each side; sending each wire harness to the wire release bucket through the feeding mechanism, detecting whether the wire harness falls into the wire grabbing fixture through the wire release bucket, and after the wire grabbing fixture grabs the wire harness, the flipping component A flips the wire grabbing fixture from a horizontal position to a vertical position;

[0025] Step S2, the industrial computer sends a mobile wire grabbing instruction to the mobile wire grabbing mechanism, controls the sliding seat of the linear module A to reach the position of each wire grabbing fixture in turn, and uses the mobile fixture to clamp the wire harness on the wire grabbing fixture. After the corresponding wire grabbing fixture is released, the mobile fixture moves to the wire harness clamping mechanism to place the wire harness on the wire harness clamps of the front sliding platform and the rear sliding platform; the mobile clamp repeats back and forth to place all the wire harnesses that need to be grabbed on the wire harness clamp;

[0026] Step S3, judging whether all the wire harnesses have been put into the wire harness fixture under the current processing mode, controlling the wire harness fixtures of the front sliding platform and the rear sliding platform to clamp the front and rear ends of the wire harness; controlling the elevator to rise, opening the pneumatic chuck fixture, and then driving the two wire harness fixtures to move forward so that the wire core at the front end of the wire harness enters the inside of the pneumatic chuck fixture; then locking the pneumatic chuck fixture, starting the rotary motor to rotate the wire harness to form a wire harness set, wherein a wire harness set sleeved with the heat shrink tube is a sleeve wire harness set; after the twisting is completed, unlock the pneumatic chuck fixture, and control the elevator to descend, leaving space for the front sliding platform and the rear sliding platform to move forward;

[0027] S41, the industrial computer sends a heat shrink tube feeding instruction to the heat shrink tube feeding mechanism, drives the material distribution motor to rotate the material distribution wheel, allows a heat shrink tube to slide from the channel of the heat shrink tube hopper into the heat shrink tube fixture, and then the heat shrink tube fixture is locked, and the flip component B flips the heat shrink tube fixture from a horizontal position to a vertical position. At this time, the heat shrink tube is facing the sleeve wiring harness set, and the front sliding platform and the rear sliding platform where the sleeve wiring harness set is located are driven to allow the front end of the sleeve wiring harness set to pass through the heat shrink tube; after the heat shrink tube passes through, the heat shrink tube fixture is controlled to open, and then the front sliding platform and the rear sliding platform continue to move to send the front end of the sleeve wiring harness set to the welding workbench;

[0028] S42, controlling the front sliding platform and the rear sliding platform corresponding to another wiring harness set to move, and delivering the front end of the other wiring harness set to the welding workbench;

[0029] S5. Check whether there is a wire harness set on the welding workbench, start the welder for welding, take out the wire harness after welding, move the heat shrink tube to the welding area, and use the heat shrink machine for heat shrinking, so that the heat shrink tube covers the entire welding area of ​​the wire harness, and complete the wire harness processing;

[0030] S6. After the wire harness assembly is removed from the wire harness clamping mechanism, the flip assembly B is controlled to flip so that the heat shrink tube clamp is flipped to a horizontal position.

[0031] One of the preferred solutions of the present invention is that welding clamps are arranged on both sides of the welding workbench. After the front end of the wire harness set is moved from the wire harness clamping mechanism to the welding area of ​​the welding workbench, it is clamped by the welding clamp. After welding is completed, the welding clamp is unlocked.

[0032] In summary, the present invention has the following advantages:

[0033] The device and processing method of the present invention can twist multiple wire harnesses into a wire harness set, and complete the processing of the wire harness with the cooperation of a welding workbench, which can greatly improve production efficiency and reduce labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a heat shrink tubing threading auxiliary device for automotive wiring harnesses according to an embodiment of the present invention;

[0035] Figure 2 A top view of a heat shrink tubing threading auxiliary device for automotive wiring harnesses according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of a connection state between a wire grabbing clamp and a movable clamp in one embodiment of the present invention;

[0037] Figure 4 A partial schematic diagram of a wire grabbing clamp in one embodiment of the present invention;

[0038] Figure 5 A schematic diagram of a wire grabbing fixture and a flipping assembly A of a wire paying-off mechanism in one embodiment of the present invention;

[0039] Figure 6 A schematic diagram of an inclined air gripper of a mobile fixture in one embodiment of the present invention;

[0040] Figure 7 A schematic diagram of a semicircular arc air claw of a heat shrink tube fixture in one embodiment of the present invention;

[0041] Figure 8 A schematic diagram of a heat shrink tube feeding mechanism in one embodiment of the present invention;

[0042] Fig. 9 It is a schematic diagram of the internal structure of a heat shrink tube feeding mechanism in one embodiment of the present invention;

[0043] Fig.10 A top view of a wire harness clamping mechanism according to an embodiment of the present invention;

[0044] Fig.11 A side view of a wire harness clamping mechanism according to an embodiment of the present invention;

[0045] Fig.12 A side view of a support foot according to an embodiment of the present invention;

[0046] Fig.13 is a schematic diagram of a wiring harness clamp according to an embodiment of the present invention;

[0047] Fig.14 It is a schematic diagram of the upper part of the stranding mechanism in one embodiment of the present invention, wherein the lower part of the lifting mechanism and the rotating motor driving the turntable are omitted.

[0048] Among them, 1. workbench; 2. wire release mechanism; 3. mobile wire grabbing mechanism; 4. wire harness clamping mechanism; 5. heat shrink tube feeding mechanism; 6. welding workbench, 7. welding fixture; 8. industrial computer; 11. vertical board;

[0049] 21. Wire-releasing bucket; 22. Turning assembly A; 23. Middle plate; 24. Wire-catching fixture;

[0050] 31. Linear module A; 32. Telescopic rod; 33. Mobile fixture; 34. Inclined air claw;

[0051] 41. Linear module B; 42. Front sliding platform; 43. Rear sliding platform; 44. Wire harness fixture; 45. Support frame; 46. Wire twisting mechanism; 461. Lifter; 462. Turntable; 463. Pneumatic chuck fixture; 464. Rotating motor; 47. Auxiliary fixture;

[0052] 51. Heat shrink tube hopper; 52. Heat shrink tube fixture; 53. Flip assembly B; 54. Dividing wheel; 55. Tube groove; 56. Semicircular arc air claw. DETAILED DESCRIPTION

[0053] The present invention provides an auxiliary device for threading heat shrink tubes for automotive wiring harnesses, comprising: a workbench 1, a wire-releasing mechanism 2, a mobile wire-grabbing mechanism 3, a wire harness clamping mechanism 4, a heat shrink tube feeding mechanism 5, a welding workbench 6, and an industrial computer 8. The workbench 1 is an installation and fixing platform for the entire device. A plurality of devices and auxiliary tools can be arranged on the workbench 1, and the devices can also be fixed by opening holes and matching bolts. The wire-releasing mechanism 2 is a device that places each wire harness grabbed by a manipulator on a wire-grabbing clamp 24, and facilitates grabbing by a mobile clamp 33 by flipping. The source of the wire harness of the wire-releasing mechanism 2 can be grabbed by a manipulator, or it can be coordinated with an automatic offline riveting machine. The wire harness unloaded by the riveting machine is transmitted through a conveyor belt, and then automatically falls into the wire-releasing bucket 21. Because each wire harness has a long spacing during the offline process, there will be no interference between multiple wire harnesses.

[0054] Each wire-releasing mechanism 2 can grab a strand of wire or a wire harness. The wire harness has a certain hardness. The end position of each wire harness is an exposed wire core, so that the wire core of each wire is aligned, so that each wire core has a sufficient connection area, ensuring the product connection quality and welding quality. The function of the mobile wire grabbing mechanism 3 is to transfer the wire harness from the wire grabbing fixture 24 of the wire-releasing mechanism 2 to the wire harness clamp of the wire harness clamping mechanism 4. The function of the heat shrink tube feeding mechanism 5 is to obtain a heat shrink tube each time and to stably set the heat shrink tube on the path through which the wire harness passes. The welding workbench 6 is the location for welding the metal part of the wire harness end, and the welding equipment can choose ultrasonic welding equipment.

[0055] Several sets of wire-releasing mechanisms 2 are arranged on both sides of the workbench, a movable wire-catching mechanism 3 is arranged below the wire-releasing mechanism 2 on each side, a wire harness clamping mechanism 4 is arranged at the end position of each movable wire-catching mechanism 3, and a heat shrink tube feeding mechanism 5 and a welding workbench 6 are arranged between the two wire harness clamping mechanisms 4. Two vertical plates 11 can be arranged on the workbench, the wire-releasing mechanism 2 is fixed on the vertical plates, a heat shrink tube feeding mechanism 5 and a welding workbench 6 are arranged between the two vertical plates, and a notch is arranged at the lower part of the vertical plate, and the notch part facilitates the wire harness clamping mechanism 4 to move the wire harness set to the welding workbench 6.

[0056] Each or each group of wire-releasing mechanisms 2 can use one wire harness. Since the ends of the two bundles of wire harnesses on the left and right are welded together during welding, wire-releasing mechanisms 2 are respectively arranged on both sides of the workbench. Since the number of wire harnesses to be welded on the left and right sides is not exactly the same each time welding, generally between 2 and 5 wire harnesses, 2 to 5 wire-releasing mechanisms 2 can be arranged on each side. Multiple groups of wire-releasing mechanisms 2 are arranged on each side, but each wire harness is transferred by a mobile wire-catching mechanism 3, that is, one wire harness is transferred at a time. When multiple wire harnesses need to be transferred on each side, the mobile wire-catching mechanism 3 needs to go back and forth multiple times for grabbing.

[0057] The wire-releasing mechanism 2 includes a wire-releasing bucket 21 and a flip assembly A22. An intermediate plate 23 is provided below the wire-releasing bucket 21. Two wire-grabbing clamps 24 are arranged on the intermediate plate 23. The flip assembly A22 rotates the wire-grabbing clamp 24 by driving the intermediate plate 23. The wire-releasing bucket 21 of the present invention has a V-shaped structure above, and the bottom of the V-shaped structure has a channel. A vibrator is provided on the outer wall of the channel, and the vibrator can facilitate the wire harness to slide down from the channel. The flip assembly A22 and the flip assembly B are motor flip structures. The rotating shaft of the motor flip structure is connected to the intermediate plate 23 to drive the wire-grabbing clamp 24 to flip. The motor flip structure can more easily control the flip angle. When different angle deviations occur between devices, it is easier to revise the flip effect of each flip assembly A22. The wire-grabbing clamp 24 of the present invention is a pneumatic clamp. The clamping position of the wire-grabbing clamp 24 corresponds to the channel of the wire-releasing bucket 21, that is, the wire-grabbing clamp 24 is directly opposite to the channel of the wire-releasing bucket 21.

[0058] First, the wire harness is placed in the wire-releasing bucket 21 by means of existing technologies such as a manipulator or a feeding belt. The wire harness gradually descends under the constraint of the wire-releasing bucket 21 and falls from the channel of the wire-releasing bucket 21 into the clamping position of the two wire-grabbing clamps 24. When the wire-grabbing clamp 24 receives the wire harness, it is clamped immediately, and then the flip assembly A22 is started to flip the wire-grabbing clamp 24. After flipping to the vertical direction, the wire harness is clamped between the two clamps. When necessary, the two wire-grabbing clamps can be relatively moved by setting a driving device, so that the wire harness is straightened, and the mobile clamp 33 can take away the wire harness. After the mobile wire harness clamps the wire harness, the wire-grabbing clamp 24 is released. When the mobile wire harness moves away, the wire-grabbing clamp 24 flips again to return to the wire-grabbing position. The present invention sets the wire grabbing clamp 24 below the wire pay-off bucket 21, so it cannot be too far away from the wire pay-off bucket 21, otherwise it is not conducive to catching the wire harness. However, when the wire grabbing clamp 24 is close to the wire pay-off bucket 21, it is not conducive to the mobile clamp 33 to grab the wire harness. Therefore, a flipping component A22 is set to allow the wire grabbing clamp 24 to flip after grabbing the wire harness. This can greatly increase the distance between the wire harness and the wire pay-off bucket 21, making it easier for the mobile clamp 33 to grab it, and there will be no risk of the mobile clamp 33 touching the wire pay-off bucket 21.

[0059] The mobile wire grabbing mechanism 3 includes a linear module A31, a telescopic rod 32 is installed on the sliding seat of the linear module A31, and a mobile clamp 33 is installed on the telescopic rod 32. The telescopic rod 32 is conducive to adjusting the position of the mobile clamp 33, so that the mobile clamp 33 can be aligned with the neutral position of the wire grabbing clamp 24, which is convenient for removing the wire harness from the wire grabbing clamp 24. The actual length of the telescopic rod 32 can be tested after installation, which is convenient for on-site observation. Preferably, the mobile clamp 33 of the mobile wire grabbing mechanism 3 is a finger cylinder, and the finger cylinder is equipped with two parallel beveled air claws 34. From the perspective of facilitating the grasping of the wire harness, it is most convenient for the mobile clamp 33 to approach the wire grabbing clamp 24 from the side and grasp it between the two wire grabbing clamps 24. Due to the large space, the accuracy requirement is lower and errors are not easy to occur. After the mobile clamp 33 clamps the wire harness, it needs to be placed on the wire harness clamp of the wire harness clamping mechanism 4. In order to facilitate the wire harness to fall into the wire harness clamp, the two air claws of the mobile clamp 33 are inclined air claws 34. The mobile clamp 33 needs to be set horizontally. At this time, the inclined air claws 34 are in a parallel state of horizontal downward tilting, so that the wire harness can be taken from the wire grabbing clamp 24, and the inclined air claws 34 can be opened to allow the wire harness to slide naturally from the inclined surface to the wire harness clamp of the wire harness clamping mechanism 4. After the industrial computer 8 determines the number of wire harnesses to be welded on each side and the wire laying position of the wire harness, that is, which wire laying mechanisms 2 are selected to be used, the mobile wire grabbing mechanism 3 can determine which wire laying buckets 21 and wire grabbing clamps 24 will be used to take the wire harness, that is, all the wire harnesses can be grabbed into the wire harness clamping mechanism 4 by moving back and forth.

[0060] The harness clamping mechanism 4 includes a linear module B41, which has two sliding platforms. The two sliding platforms can be controlled by the industrial computer 8 respectively, so that the moving position of each sliding platform is controlled. The two sliding platforms are the front sliding platform 42 and the rear sliding platform, respectively. The front sliding platform 42 is close to the middle of the workbench. The front sliding platform 42 is equipped with a harness clamp and a support frame 45, and the rear sliding platform 43 is equipped with a harness clamp; the two harness clamps can clamp the delivered harness, and when all harnesses are delivered to the right place, the two harness clamps clamp, and the front harness clamp clamps at a certain distance from the exposed metal part at the front end of the harness. The air claw of the harness clamp of the present invention can be a conventional parallel air claw. If the support frame 45 is not provided, the harness will fall directly into the lowest position, and such a height is not conducive to subsequent processing and movement. Therefore, the present invention sets a support frame 45 on the rear end of the harness clamp on the front sliding platform 42, which can make the harness position of the front harness clamp higher and easier to insert the heat shrink tube or reach the plane height of the welding workbench 6.

[0061] The end of the linear module B41 close to the welding workbench 6 is a hollow structure, and a twisting mechanism 46 is arranged in the hollow structure; the twisting mechanism 46 includes a lift 461, a rotating motor 464 is installed on the lift 461, a turntable 462 is installed on the rotating motor 464, and a pneumatic chuck fixture 463 is installed on the turntable 462. When all the wire harnesses are in place, the industrial computer 8 drives the two sliding platforms to move forward a short distance, so that the exposed metal parts of all the wire harnesses extend into the pneumatic chuck fixture 463, and then clamp and rotate, so that all the wire harnesses are twisted into a bundle of wire harnesses, so that the multiple wire harnesses are more tightly connected, which is convenient for welding and inserting heat shrink tubes. After the twisting is completed, the twisting mechanism 46 needs to be lowered, otherwise it will block the forward movement of the two sliding platforms.

[0062] The present invention has two groups of wire harnesses on the left and right during processing, but only one of the groups of wire harnesses needs to be sheathed in the heat shrink tube, so a heat shrink tube feeding mechanism 5 is provided on one side.

[0063] The heat shrink tube feeding mechanism 5 is arranged on the inner side of one of the harness clamping mechanisms 4, and the heat shrink tube feeding mechanism 5 includes a heat shrink tube hopper 51, a heat shrink tube fixture 52 and a flip assembly B53. A material distribution wheel is arranged inside the heat shrink tube hopper 51, and the material distribution wheel is equipped with a material distribution motor. The flip assembly B53 is connected to the heat shrink tube fixture 52 and drives the heat shrink tube fixture 52 to rotate, and the clamping position of the heat shrink tube fixture 52 corresponds to the discharge port of the heat shrink tube hopper 51. The heat shrink tube is a hollow rubber tube, and the heat shrink tube is placed in the heat shrink tube hopper 51, but only one heat shrink tube needs to be taken out each time it is processed. Therefore, the present invention designs a material distribution wheel 54, which has a tube groove 55, and each tube groove can only accommodate one heat shrink tube. During the rotation process, the material distribution wheel can drive a heat shrink tube into the channel of the heat shrink tube hopper 51 after each rotation of a certain angle, and slide from the channel into the heat shrink tube fixture 52. The heat shrink tube fixture 52 is a finger cylinder, which is equipped with two semicircular air claws 56. When taking materials, the upper semicircular air claw 56 moves up and opens. When the heat shrink tube is detected to slide into the heat shrink tube fixture 52, the heat shrink tube fixture 52 is closed, and then the flip assembly B flips the heat shrink tube fixture 52. The flipped heat shrink tube is clamped in the fixture, and the through hole of the heat shrink tube is aligned with the wire harness. The through hole size of the heat shrink tube is larger than the outer diameter of the wire harness set, which is convenient for the wire harness set to pass through the through hole of the heat shrink tube. Then it can be transported to the welding position of the welding workbench 6, and an ultrasonic welder can be used for welding. In addition, since the wire harness fixture needs to be withdrawn after transportation to prepare for clamping the next wire harness set, welding fixtures 7 need to be set on both sides of the welding workbench 6. The welding fixture 7 clamps the wire harness and then welds it. At the same time, the welding fixture 7 can also be set on the guide rail to fine-tune the position of the wire harness.

[0064] Preferably, in the present invention, an auxiliary clamp 47 is provided in the middle of the wire harness clamping mechanism 4, which can clamp the wire harness to a certain extent and avoid disorder in the middle.

[0065] Preferably, the present invention has a photoelectric sensor arranged in the channel of the wire unwinding bucket 21, a photoelectric sensor arranged under the wire grabbing clamp 24, a photoelectric sensor arranged at the wire harness clamping mechanism 4, a photoelectric sensor arranged in the channel of the heat shrink tube hopper 51, and a photoelectric sensor arranged on the welding workbench 6; the photoelectric sensor of the present invention can be an infrared laser sensor, which can detect the position of an object, count, whether it passes by, etc., and the above functions are also conventional functions of infrared laser sensors.

[0066] The present invention is preferred that the flip assembly A22 of the wire release mechanism 2 is equipped with a flip controller, and the wire gripping fixture 24 is equipped with a fixture control unit; the linear module A31 of the mobile wire gripping mechanism 3 is equipped with a module controller, the telescopic rod 32 of the mobile wire gripping mechanism 3 is an automatic telescopic rod 32, and the automatic telescopic rod 32 is equipped with a telescopic controller, and the mobile fixture 33 is equipped with a fixture control unit; the linear module B41 of the harness clamping mechanism 4 is equipped with a module controller, the harness fixture is equipped with a fixture control unit, the elevator 461 of the stranding mechanism 46 is equipped with a lifting controller, the rotary motor is equipped with a rotary motor controller, and the pneumatic chuck fixture 463 is equipped with a fixture control unit; the industrial computer 8 is respectively connected to all the flip controllers, fixture control units, module controllers, telescopic controllers, lifting controllers, and rotary motor controllers. In order to realize automatic control, most of the operations of moving, grabbing, and clamping in the present invention are completed by automated mechanical equipment. Therefore, in order to achieve more accurate positioning and operation timing, multiple sensors and controllers are configured to realize position detection, distance detection, or detection of whether there is an object, so as to realize automatic processing.

[0067] The invention discloses a wiring harness processing method based on an automobile wiring harness heat shrink tube threading auxiliary device, comprising the following steps:

[0068] Step S1, set the wire harness processing mode through the industrial computer 8, the wire harness processing mode includes the use position and quantity of the wire pay-off mechanism 2 on each side; send each wire harness to the wire pay-off bucket 21 through the feeding mechanism, detect whether the wire harness falls into the wire grabbing clamp 24 through the wire pay-off bucket 21, and after the wire grabbing clamp 24 grabs the wire harness, the flipping component A22 flips the wire grabbing clamp 24 from a horizontal position to a vertical position.

[0069] At the beginning of processing, first set the number of wire-releasing mechanisms 2 on each side and which wire-releasing mechanisms 2 will be used. After setting this parameter, the mobile clamp 33 will move to the corresponding wire-releasing mechanism 2 according to this parameter to clamp the wire harness; the position of the mobile clamp 33 can be judged by the travel distance of the mobile clamp 33, and then the system can know which wire-grabbing clamp 24 the mobile clamp 33 is currently located at, and a photoelectric sensor can be set at the corresponding position of the wire-grabbing clamp 24. When the mobile clamp 33 moves and stays at this position, it can be determined which wire-releasing mechanism 2 is the current wire-releasing mechanism 2, and the wire-grabbing clamp 24 of the wire-releasing mechanism 2 can also be controlled to be released at the same time.

[0070] Step S2, the industrial computer 8 sends the mobile wire grabbing instruction to the mobile wire grabbing mechanism 3, controls the sliding seat of the linear module A31 to reach the position of each wire grabbing clamp 24 in turn, and uses the mobile clamp 33 to clamp the wire harness on the wire grabbing clamp 24. After the corresponding wire grabbing clamp 24 is released, the mobile clamp 33 moves to the wire harness clamping mechanism 4 to place the wire harness on the wire harness clamps of the front sliding platform 42 and the rear sliding platform 43; for example, one placement method can be: the mobile clamp 33 moves to the wire harness clamping mechanism 4 to retract the wire grabbing mechanism and straighten the wire. The wire harness is pulled straight from the wire harness fixture of the rear sliding platform 43 to the wire harness fixture of the front sliding platform 42; the wire harness fixture of the front sliding platform 42 closes and clamps the wire, and when the second wire is pulled straight from the wire harness fixture of the rear sliding platform 43 to the wire harness fixture of the front sliding platform 42 to align the wire core, the wire harness fixture of the front sliding platform 42 opens, clamps the wire, and then closes and clamps the wire, and then completes the third, fourth, and other subsequent wire harnesses in sequence; other methods can also be used as long as the wire harness can be placed flat in the wire harness fixture of the sliding platform. Finally, the moving fixture 33 repeats back and forth, and all the wire harnesses that need to be grabbed are placed on the wire harness fixture.

[0071] Step S3, determine whether all the wire harnesses have been placed in the wire harness fixture under the current processing mode, and check whether the wire cores are aligned. After the wire core alignment check is qualified, control the wire harness fixtures of the front sliding platform 42 and the rear sliding platform 43 to clamp the front and rear ends of the wire harness; control the elevator 461 to rise, open the pneumatic chuck fixture 463, and then drive the two wire harness fixtures to move forward so that the wire core at the front end of the wire harness enters the inside of the pneumatic chuck fixture 463; then lock the pneumatic chuck fixture 463, start the rotary motor to rotate and let the wire harness be twisted to form a wire harness set, wherein a wire harness set that is sleeved with the heat shrink tube is a sleeve wire harness set; after the twisting is completed, unlock the pneumatic chuck fixture 463, and control the elevator 461 to descend, leaving space for the front sliding platform 42 and the rear sliding platform 43 to move forward; and preferably, after the twisting is completed, the rear sliding platform 43 and the front sliding platform 44 are slowly pulled back a small distance to allow the wire harness to detach from the fixture, and the wire harness can also be straightened during the detachment process.

[0072] S41, the industrial computer 8 sends a heat shrink tube feeding instruction to the heat shrink tube feeding mechanism 5, drives the feeding motor to rotate the feeding wheel, allows a heat shrink tube to slide from the channel of the heat shrink tube hopper 51 into the heat shrink tube fixture 52, and then the heat shrink tube fixture 52 is locked, and the flip component B flips the heat shrink tube fixture 52 from a horizontal position to a vertical position. At this time, the heat shrink tube is facing the sleeve wiring harness assembly, and drives the front sliding platform 42 and the rear sliding platform 43 where the sleeve wiring harness assembly is located, so that the front end of the sleeve wiring harness assembly passes through the heat shrink tube; after the heat shrink tube passes through, the heat shrink tube fixture 52 is controlled to open, and then the front sliding platform 42 and the rear sliding platform 43 continue to move, and the front end of the sleeve wiring harness assembly is sent to the welding workbench 6.

[0073] S42, control the movement of the front sliding platform 42 and the rear sliding platform 43 corresponding to another wiring harness set, and send the front end of the other wiring harness set to the welding workbench 6; welding clamps 7 are arranged on both sides of the welding workbench 6, and after the front end of the wiring harness set is moved from the wiring harness clamping mechanism 4 to the welding area of ​​the welding workbench 6, it is clamped by the welding clamp 7, and the welding clamp 7 is unlocked after welding is completed.

[0074] S5. Check whether there is a wire harness set on the welding workbench 6, whether the wire cores of the wire harness set are overlapped and aligned, and start the welding machine for welding. After welding, take out the wire harness, then move the heat shrink tube to the welding area, and then use the heat shrink machine for heat shrinking, so that the heat shrink tube covers the entire wire harness welding area inside, and complete the wire harness processing.

[0075] S6. After the wire harness set is removed from the wire harness clamping mechanism 4, the flip assembly B is controlled to flip so that the heat shrink tube clamp 52 flips to a horizontal position.

[0076] Although the specific implementation of the present invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. An auxiliary device for threading a heat shrink tube for an automobile wiring harness, characterized in that: include: Workbench, wire-releasing mechanism, mobile wire-catching mechanism, wire harness clamping mechanism, heat shrink tube feeding mechanism, welding workbench and industrial computer; Several groups of wire-releasing mechanisms are arranged on both sides of the workbench, a movable wire-catching mechanism is arranged under the wire-releasing mechanism on each side, a wire harness clamping mechanism is arranged at the end position of each movable wire-catching mechanism, and a heat shrink tube feeding mechanism and a welding workbench are arranged between the two wire harness clamping mechanisms; The wire-releasing mechanism comprises a wire-releasing bucket and a turning assembly A. An intermediate plate is provided below the wire-releasing bucket, and two wire-catching clamps are arranged on the intermediate plate. The turning assembly A drives the intermediate plate to rotate the wire-catching clamps. The mobile wire grabbing mechanism comprises a linear module A, a sliding seat of which is provided with a telescopic rod, and a mobile clamp is provided on the telescopic rod; The harness clamping mechanism includes a linear module B, which has two sliding platforms, namely a front sliding platform and a rear sliding platform; a harness clamp and a support frame are installed on the front sliding platform, and a harness clamp is installed on the rear sliding platform; The end of the linear module B close to the welding workbench has a hollow structure inside, and a stranding mechanism is arranged in the hollow structure; the stranding mechanism includes an elevator, a rotating motor is installed on the elevator, a turntable is installed on the rotating motor, and a pneumatic chuck fixture is installed on the turntable; The heat shrink tube feeding mechanism is arranged on the inner side of one of the wiring harness clamping mechanisms, and the heat shrink tube feeding mechanism includes a heat shrink tube hopper, a heat shrink tube fixture and a flip assembly B. A material distribution wheel is arranged inside the heat shrink tube hopper, and the material distribution wheel is equipped with a material distribution motor. The flip assembly B is connected to the heat shrink tube fixture and drives the heat shrink tube fixture to rotate. The clamping position of the heat shrink tube fixture corresponds to the discharge port of the heat shrink tube hopper; Welding fixtures are arranged on both sides of the welding workbench.

2. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: The workbench is provided with two vertical plates, the wire-releasing mechanism is fixed on the vertical plates, a heat shrink tube feeding mechanism and a welding workbench are provided between the two vertical plates, and a notch is provided at the lower part of the vertical plates.

3. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: The top of the wire-releasing bucket is in a V-shaped structure, the bottom of the V-shaped structure has a channel, and a vibrator is arranged on the outer wall of the channel; the flip assembly A and the flip assembly B are motor flip structures, the rotating shaft of the motor flip structure is connected to the middle plate to drive the wire grabbing clamp to flip; the wire grabbing clamp is a pneumatic clamp, and the clamping position of the wire grabbing clamp corresponds to the channel of the wire-releasing bucket.

4. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: The movable clamp of the movable thread-grasping mechanism is a finger cylinder, and the finger cylinder is provided with two parallel inclined plane air claws.

5. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: An auxiliary clamp is arranged in the middle of the wire harness clamping mechanism.

6. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: The heat shrink tube fixture is a finger cylinder, which is equipped with two semicircular arc air claws.

7. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: A photoelectric sensor is arranged in the channel of the wire-releasing hopper, a photoelectric sensor is arranged below the wire-grabbing clamp, a photoelectric sensor is arranged in the wire harness clamping mechanism, a photoelectric sensor is arranged in the channel of the heat shrink tube hopper, and a photoelectric sensor is arranged on the welding workbench.

8. The automotive wiring harness heat shrink tube threading auxiliary device according to claim 1, characterized in that: The turning assembly A of the wire-releasing mechanism is equipped with a turning controller, and the wire-catching clamp is equipped with a clamp control unit; The linear module A of the mobile thread grabbing mechanism is equipped with a module controller, the telescopic rod of the mobile thread grabbing mechanism is an automatic telescopic rod, the automatic telescopic rod is equipped with a telescopic controller, and the mobile clamp is equipped with a clamp control unit; The linear module B of the harness clamping mechanism is equipped with a module controller, the harness clamp is equipped with a clamp control unit, the elevator of the stranding mechanism is equipped with a lift controller, the rotary motor is equipped with a rotary motor controller, and the pneumatic chuck clamp is equipped with a clamp control unit; The industrial computer is connected to all the flip controllers, fixture control units, module controllers, telescopic controllers, lifting controllers, and rotating motor controllers respectively.

9. A wiring harness processing method based on an automotive wiring harness heat shrink tube threading auxiliary device, characterized in that: The following steps are involved: Step S1, setting the wire harness processing mode through the industrial computer, the wire harness processing mode includes the use position and quantity of the wire release mechanism on each side; sending each wire harness to the wire release bucket through the feeding mechanism, detecting whether the wire harness falls into the wire grabbing fixture through the wire release bucket, and after the wire grabbing fixture grabs the wire harness, the flipping component A flips the wire grabbing fixture from a horizontal position to a vertical position; Step S2, the industrial computer sends a mobile wire grabbing instruction to the mobile wire grabbing mechanism, controls the sliding seat of the linear module A to reach the position of each wire grabbing fixture in turn, and uses the mobile fixture to clamp the wire harness on the wire grabbing fixture. After the corresponding wire grabbing fixture is released, the mobile fixture moves to the wire harness clamping mechanism to place the wire harness on the wire harness clamps of the front sliding platform and the rear sliding platform; the mobile clamp repeats back and forth to place all the wire harnesses that need to be grabbed on the wire harness clamp; Step S3, judging whether all the wire harnesses have been put into the wire harness fixture under the current processing mode, controlling the wire harness fixtures of the front sliding platform and the rear sliding platform to clamp the front and rear ends of the wire harness; controlling the elevator to rise, opening the pneumatic chuck fixture, and then driving the two wire harness fixtures to move forward so that the wire core at the front end of the wire harness enters the inside of the pneumatic chuck fixture; then locking the pneumatic chuck fixture, starting the rotary motor to rotate the wire harness to form a wire harness set, wherein a wire harness set sleeved with the heat shrink tube is a sleeve wire harness set; after the twisting is completed, unlock the pneumatic chuck fixture, and control the elevator to descend, leaving space for the front sliding platform and the rear sliding platform to move forward; S41, the industrial computer sends a heat shrink tube feeding instruction to the heat shrink tube feeding mechanism, drives the material distribution motor to rotate the material distribution wheel, allows a heat shrink tube to slide from the channel of the heat shrink tube hopper into the heat shrink tube fixture, and then the heat shrink tube fixture is locked, and the flip component B flips the heat shrink tube fixture from a horizontal position to a vertical position. At this time, the heat shrink tube is facing the sleeve wiring harness set, and the front sliding platform and the rear sliding platform where the sleeve wiring harness set is located are driven to allow the front end of the sleeve wiring harness set to pass through the heat shrink tube; after the heat shrink tube passes through, the heat shrink tube fixture is controlled to open, and then the front sliding platform and the rear sliding platform continue to move to send the front end of the sleeve wiring harness set to the welding workbench; S42, controlling the front sliding platform and the rear sliding platform corresponding to another wiring harness set to move, and delivering the front end of the other wiring harness set to the welding workbench; S5. Check whether there is a wire harness set on the welding workbench, start the welder for welding, take out the wire harness after welding, move the heat shrink tube to the welding area, and use the heat shrink machine for heat shrinking, so that the heat shrink tube covers the entire welding area of ​​the wire harness, and complete the wire harness processing; S6. After the wire harness assembly is removed from the wire harness clamping mechanism, the flip assembly B is controlled to flip so that the heat shrink tube clamp is flipped to a horizontal position.

10. The wire harness processing method according to claim 9, characterized in that: Welding clamps are arranged on both sides of the welding workbench. After the front end of the wire harness set is moved from the wire harness clamping mechanism to the welding area of ​​the welding workbench, it is clamped by the welding clamp. After welding is completed, the welding clamp is unlocked.

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