Automatic feeding device for heat shrink tube at crimping end of automobile wire harness

Abstract

The invention belongs to the technical field of wire harness processing equipment, and particularly relates to an automobile wire harness crimping end heat shrink tube automatic feeding device which comprises a first rack, a Y-axis taking and conveying assembly, a rotating assembly, an adsorption assembly, a Y-axis connecting assembly, an X-axis translation assembly, a clamping assembly and a wire supporting mechanism. The Y-axis taking and conveying assembly comprises a Y-axis rodless air cylinder and a first guide rail assembly, the Y-axis rodless air cylinder is provided with a first cylinder barrel and a first sliding table capable of sliding along the first cylinder barrel, and a taking end proximity switch and a discharging end proximity switch are arranged near the two ends of the first cylinder barrel respectively. The first guide rail assembly comprises a first guide rail and a first sliding block capable of sliding along the first guide rail, the first cylinder barrel and the first guide rail are arranged in parallel, the first sliding table and the first sliding block move synchronously, the rotating assembly comprises a second rack and a rotating air cylinder, and the second rack is fixed to the first sliding table and the first sliding block; and the rotating cylinder is fixedly connected with the second rack. According to the invention, the automation and high precision of the heat shrink tube feeding process are realized.

Description

Technical Field

[0001] This invention belongs to the technical field of wire harness processing equipment, and relates to an automatic feeding device for heat shrink tubing crimping terminals of automotive wire harnesses. Background Technology

[0002] In the assembly process of inserting heat shrink tubing into wire harnesses, existing technology typically uses a vibratory feeder to load heat shrink tubing of a preset length, and then a clamping mechanism to transport the heat shrink tubing to the wire harness, attempting to insert one end of the wire harness into the center hole of the heat shrink tubing. However, this process has significant drawbacks: First, during the clamping and transporting of the heat shrink tubing, it is easy for it to fall outside the clamping range or for the clamping position to be offset. Second, the alignment accuracy between the heat shrink tubing and the wire harness is low, making it difficult for the wire harness to be inserted into the heat shrink tubing. Third, the degree of automation is low, requiring manual adjustment, which not only results in low processing efficiency but also easily leads to product defects due to human error. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing an automatic feeding device for heat shrink tubing crimp terminals of automotive wiring harnesses.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions: An automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses includes a first frame, a Y-axis pick-and-feed assembly, a rotating assembly, an adsorption assembly, a Y-axis transfer assembly, an X-axis translation assembly, a clamping assembly, and a wire support mechanism. The Y-axis pick-and-place assembly includes a Y-axis rodless cylinder and a first guide rail assembly. The Y-axis rodless cylinder has a first cylinder and a first slide that can slide along the first cylinder. A pick-up end proximity switch and a discharge end proximity switch are respectively provided near both ends of the first cylinder. The first guide rail assembly includes a first guide rail and a first slider that can slide along the first guide rail. The first cylinder is arranged parallel to the first guide rail, and the first slide and the first slider move synchronously. The rotating assembly includes a second frame and a rotary cylinder. The second frame is fixed on the first slide and the first slider. The rotary cylinder is fixedly connected to the second frame. The output end of the rotary cylinder is connected to a rotating disk, which can drive the rotating disk to rotate at a preset angle. The adsorption assembly includes a third frame, a material-picking cylinder, and a vacuum suction cup. The third frame is fixedly connected to the rotating disk. The material-picking cylinder is fixedly connected to the third frame. The output end of the material-picking cylinder is provided with two translation rods that can move closer or further apart from each other. The vacuum suction cup is fixedly connected to the translation rods and is connected to a vacuum generator for controlling the picking and placing. The Y-axis junction assembly includes a motor, a synchronous belt drive mechanism, a second slider, and a cable chain. The motor is fixedly connected to the first frame. The synchronous belt drive mechanism includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first synchronous pulley is connected to the output end of the motor, and the second synchronous pulley is rotatably connected to the first frame. The synchronous belt meshes with the two synchronous pulleys. Proximity switches for determining the start and end positions are provided near both ends of the synchronous belt. The synchronous belt is connected to a connecting block through two relatively clamped toothed plates. One end of the connecting block is fixed to the second slider, and the other end is connected to a cable chain plate. The cable chain is connected to the cable chain plate.

[0005] In the aforementioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, the X-axis translation assembly includes a fourth frame, an X-axis rodless cylinder, and an X-axis guide rail assembly. The fourth frame is fixedly connected to the second slider. The X-axis rodless cylinder has an X-axis cylinder barrel and an X-axis slide table that can slide along the X-axis cylinder barrel. The X-axis guide rail assembly includes an X-axis guide rail and an X-axis slider that can slide along the X-axis guide rail. The X-axis cylinder barrel and the X-axis guide rail are arranged parallel to each other on the fourth frame.

[0006] In the above-mentioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, the clamping assembly includes a fifth frame, a feeding cylinder, a left guide clamp, and a right guide clamp. The fifth frame is fixed on the X-axis slide table and the X-axis slider. The feeding cylinder is fixedly connected to the fifth frame. The output end of the feeding cylinder is provided with two swing rods that can move closer or further apart from each other. The left guide clamp and the right guide clamp are fixedly connected to the two swing rods respectively.

[0007] In the aforementioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, the wire support mechanism includes a sixth frame, a lifting cylinder, and a raising cylinder. The sixth frame is located on the right side of the first frame, and the lifting cylinder and raising cylinder are located on the front and rear sides of the sixth frame, respectively. The output end of the lifting cylinder is connected to a left parallel clamp and a right parallel clamp, and the output end of the raising cylinder is connected to a V-shaped wire support block.

[0008] In the above-mentioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, the vacuum suction cup of the adsorption component includes an upper vacuum suction cup and a lower vacuum suction cup; the two translation rods of the picking cylinder are directly fixed to the upper vacuum suction cup and the lower vacuum suction cup, or indirectly fixed through the upper suction cup fixing component and the lower suction cup fixing component.

[0009] In the above-mentioned automatic feeding device for heat shrink tubing of automotive wiring harness crimping end, a limit block is fixed at one end of the lower suction cup fixing component, and a stop bolt is provided at the upper end of the limit block. The stop bolt can abut against one end of the upper suction cup fixing component to limit its sliding stroke.

[0010] In the above-mentioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, a baffle is provided on the third frame. The baffle can block the axial displacement of the heat shrink tubing to position the adsorption point of the vacuum suction cup.

[0011] In the above-mentioned automatic feeding device for heat shrink tubing at the crimping end of automotive wiring harnesses, when the clamping points of the left guide clamp and the right guide clamp are closed, a flared opening is formed, which is used to guide the wiring harness into the heat shrink tubing.

[0012] In the above-mentioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, the left guide clamp and the right guide clamp are respectively provided with coaxial reflective optical fiber mounting holes, and reflective optical fibers are provided in the mounting holes. The reflective optical fibers are connected to optical fiber amplifiers. The reflective optical fibers are used to detect the presence or absence of heat shrink tubing, or to detect whether the wiring harness has passed through the heat shrink tubing.

[0013] In the aforementioned automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, the transmission combination of the Y-axis pick-and-place component and the X-axis translation component can be replaced by a combination of a motor lead screw and a guide rail slider, a combination of a motor synchronous belt and a guide rail slider, or a combination of a motor rack and pinion and a guide rail slider.

[0014] Compared with existing technologies, the advantages of this invention are: 1. This invention achieves automation and high precision in the heat shrink tubing loading process. Through the coordinated operation of the Y-axis pick-and-place component and the rotary component, stable transmission and directional adjustment of the heat shrink tubing are ensured during pick-and-placement, effectively avoiding problems such as clamping or misalignment. The adsorption component employs vacuum suction cup technology, combined with an adjustable translation rod, which can flexibly adapt to heat shrink tubing of different sizes, improving the accuracy and efficiency of pick-and-placement.

[0015] 2. The cooperation between the Y-axis junction component and the X-axis translation component of this invention enables precise positioning and movement of the heat shrink tubing in the horizontal direction, providing a reliable guarantee for subsequent clamping and insertion operations. The clamping component, through its unique flared structure, guides the wire harness smoothly through the heat shrink tubing, greatly reducing the risk of it not fitting properly.

[0016] 3. The structure of the wire support mechanism of the present invention effectively constrains the position of the wire harness when it is in the sleeve, and the height of one end of the wire harness sleeve is adjusted by the lifting cylinder, ensuring the precise docking of the wire harness with the through hole area of ​​the heat shrink tubing.

[0017] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the unfolded structure of the present invention.

[0020] Figure 3 This is a schematic diagram from another perspective of the present invention.

[0021] Figure 4 This is a schematic diagram showing another perspective of the present invention.

[0022] Figure 5 This is a schematic diagram of the adsorption component of the present invention.

[0023] Figure 6 This is a schematic diagram of the clamping component structure of the present invention.

[0024] Figure 7 This is a partial structural schematic diagram of the present invention.

[0025] In the diagram: 1. First frame; 211. First cylinder; 212. First slide; 221. First guide rail; 222. First slider; 24. Discharge end proximity switch; 31. Second frame; 32. Rotary cylinder; 321. Rotary disk; 41. Third frame; 42. Picking cylinder; 421. Translation rod; 431. Upper suction cup fixing component; 432. Lower suction cup fixing component; 441. Upper vacuum suction cup; 442. Lower vacuum suction cup; 443. Vacuum generator; 45. Limit block; 451. Stop bolt; 46. Baffle; 51. Motor; 52. Synchronous belt; 53. Toothed plate; 54. Connecting block; 552. Second slider; 561. Cable carrier plate; 562. Cable carrier; 60. Fourth frame; 611. X-axis cylinder; 612. X-axis slide; 621. X-axis guide rail; 622. X-axis slider; 71. Fifth frame; 72. Feeding cylinder; 731. Left guide clamp; 732. Right guide clamp; 74. Trumpet mouth; 75. Mounting hole; 76. Reflective optical fiber; 77. Fiber optic amplifier; 8. Cable support mechanism; 81. Sixth frame; 82. Lifting cylinder; 831. Left parallel clamp; 832. Right parallel clamp; 84. Lifting cylinder; 85. V-shaped cable support block; 91. Wire harness; 92. Heat shrink tubing. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-7 As shown, an automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses includes a first frame 1, a Y-axis pick-and-place assembly, a rotating assembly, an adsorption assembly, a Y-axis transfer assembly, an X-axis translation assembly, a clamping assembly, and a wire support mechanism 8. The Y-axis pick-and-place assembly includes a Y-axis rodless cylinder and a first guide rail assembly. The Y-axis rodless cylinder has a first cylinder 211 and a first slide 212 that can slide along the first cylinder 211. A pick-up end proximity switch and a discharge end proximity switch 24 are respectively provided near both ends of the first cylinder 211. The first guide rail assembly includes a first guide rail 221 and a first slider 222 that can slide along the first guide rail 221. The first cylinder 211 is arranged parallel to the first guide rail 221, and the first slide 212 and the first slider 222 move synchronously. The rotating assembly includes a second frame 31 and a rotary cylinder 32. The second frame 31 is fixed on the first slide table 212 and the first slider 222. The rotary cylinder 32 is fixedly connected to the second frame 31. The output end of the rotary cylinder 32 is connected to a rotating disk 321, which can drive the rotating disk 321 to rotate at a preset angle. The adsorption assembly includes a third frame 41, a material picking cylinder 42, and a vacuum suction cup. The third frame 41 is fixedly connected to the rotating disk 321. The material picking cylinder 42 is fixedly connected to the third frame 41. The output end of the material picking cylinder 42 is provided with two translation rods 421 that can move closer or further away from each other. The vacuum suction cup is fixedly connected to the translation rods 421, and the vacuum suction cup is connected to a vacuum generator 443 for controlling the picking and placing. The Y-axis junction assembly includes a motor 51, a synchronous belt drive mechanism, a second slider 552, and a cable chain 562. The motor 51 is fixedly connected to the first frame 1. The synchronous belt drive mechanism includes a first synchronous pulley, a second synchronous pulley, and a synchronous belt 52. The first synchronous pulley is connected to the output end of the motor 51, and the second synchronous pulley is rotatably connected to the first frame 1. The synchronous belt 52 meshes with the two synchronous pulleys. Proximity switches for determining the start and end positions are provided near both ends of the synchronous belt 52. The synchronous belt 52 is connected to a connecting block 54 via two relatively clamping toothed plates 53. One end of the connecting block 54 is fixed to the second slider 552, and the other end is connected to a cable chain plate 561. The cable chain 562 is connected to the cable chain plate 561.

[0028] Furthermore, the X-axis translation assembly includes a fourth frame 60, an X-axis rodless cylinder, and an X-axis guide rail assembly. The fourth frame 60 is fixedly connected to the second slider 552. The X-axis rodless cylinder has an X-axis cylinder barrel 611 and an X-axis slide 612 that can slide along the X-axis cylinder barrel 611. The X-axis guide rail assembly includes an X-axis guide rail 621 and an X-axis slider 622 that can slide along the X-axis guide rail 621. The X-axis cylinder barrel 611 and the X-axis guide rail 621 are arranged parallel to each other on the fourth frame 60.

[0029] In this embodiment, the X-axis slide 612 and the X-axis slider 622 are fixedly connected. This structure enables the X-axis slide to move along the X-axis cylinder when it slides along the X-axis cylinder, thus ensuring the stability and accuracy of the X-axis translation.

[0030] Furthermore, the clamping assembly includes a fifth frame 71, a material feeding cylinder 72, a left guide clamp 731, and a right guide clamp 732. The fifth frame 71 is fixed on the X-axis slide table 612 and the X-axis slider 622. The material feeding cylinder 72 is fixedly connected to the fifth frame 71. The output end of the material feeding cylinder 72 is provided with two swing rods that can move closer or further apart from each other. The left guide clamp 731 and the right guide clamp 732 are fixedly connected to the two swing rods respectively.

[0031] In this embodiment, the feeding cylinder 72 drives the two swing rods to move closer or further apart, thereby driving the left guide clamp 731 and the right guide clamp 732 to open and close, so as to accurately clamp the heat shrink tubing.

[0032] Furthermore, the cable support mechanism 8 includes a sixth frame 81, a lifting cylinder 82, and a raising cylinder 84. The sixth frame 81 is located on the right side of the first frame 1, and the lifting cylinder 82 and the raising cylinder 84 are respectively located on the front and rear sides of the sixth frame 81. The output end of the lifting cylinder 82 is connected to a left parallel clamp 831 and a right parallel clamp 832, and the output end of the raising cylinder 84 is connected to a V-shaped cable support block 85.

[0033] In this embodiment, the lifting cylinder 82 drives the left parallel clamp 831 and the right parallel clamp 832 to open and close, which can achieve the initial positioning and clamping of the heat shrink tubing. The lifting cylinder 84 drives the V-shaped wire support block 85 to rise or fall, which can stably lift the heat shrink tubing to a suitable height for subsequent clamping and loading operations.

[0034] Furthermore, the vacuum suction cup of the adsorption assembly includes an upper vacuum suction cup 441 and a lower vacuum suction cup 442; the two translation rods 421 of the material picking cylinder 42 are directly fixed to the upper vacuum suction cup 441 and the lower vacuum suction cup 442, or indirectly fixed through the upper suction cup fixing member 431 and the lower suction cup fixing member 432, respectively.

[0035] In this embodiment, the material-grabbing cylinder 42 drives the upper vacuum suction cup 441 and the lower vacuum suction cup 442 to move synchronously through two translation rods 421. The upper vacuum suction cup 441 and the lower vacuum suction cup 442 can adsorb the heat shrink tubing from above and below, respectively, to achieve stable gripping of the heat shrink tubing and effectively avoid the heat shrink tubing from slipping during the material-grabbing process.

[0036] Furthermore, a limit block 45 is fixed to one end of the lower suction cup fixing member 432, and a stop bolt 451 is provided at the upper end of the limit block 45. The stop bolt 451 can abut against one end of the upper suction cup fixing member 431 to limit its sliding stroke.

[0037] In this embodiment, when the upper vacuum suction cup 441 and the lower vacuum suction cup 442 move synchronously under the drive of the material picking cylinder 42, the stop bolt 451 can ensure that the upper suction cup fixing part 431 will not collide or interfere with other parts due to excessive sliding, thereby ensuring the stability and reliability of the entire adsorption assembly.

[0038] Furthermore, the third frame 41 is provided with a baffle 46, which can block the axial displacement of the heat shrink tubing 92 to position the adsorption point of the vacuum suction cup.

[0039] In this embodiment, the baffle 46 can precisely limit the range of movement of the heat shrink tubing in the axial direction, so that the upper vacuum suction cup 441 and the lower vacuum suction cup 442 can accurately position themselves at the predetermined suction point when adsorbing the heat shrink tubing.

[0040] Furthermore, when the clamping points of the left guide clamp 731 and the right guide clamp 732 are closed, a flared opening 74 is formed, which is used to guide the wire harness 91 into the heat shrink tubing 92.

[0041] In this embodiment, when the left guide clip 731 and the right guide clip 732 close to form a flared opening 74, this specially shaped structure can provide effective guidance for the wire harness 91 to smoothly pass through the heat shrink tubing 92.

[0042] Furthermore, the left guide clamp 731 and the right guide clamp 732 are respectively provided with coaxial reflective optical fiber mounting holes 75, and reflective optical fibers 76 are provided in the mounting holes 75. The reflective optical fibers 76 are connected to optical fiber amplifiers 77. The reflective optical fibers 76 are used to detect the presence or absence of heat shrink tubing 92 or to detect whether the wire bundle 91 passes through heat shrink tubing 92.

[0043] In this embodiment, the reflective optical fiber 76 can monitor the status of the heat shrink tubing 92 and the insertion of the wire bundle 91 in real time. When the heat shrink tubing 92 is present and the wire bundle 91 is successfully inserted, the reflective optical fiber 76 will receive a specific reflected signal and transmit the signal to the optical fiber amplifier 77. After processing the signal, the optical fiber amplifier 77 can feed it back to the control system to ensure the accurate execution of subsequent processes.

[0044] Furthermore, the transmission combination of the Y-axis pick-and-place component and the X-axis translation component can be replaced by a combination of a motor lead screw and a guide rail slider, a combination of a motor synchronous belt and a guide rail slider, or a combination of a motor rack and pinion and a guide rail slider.

[0045] The working principle of this invention is: When an automatic feeding device for automotive wiring harness crimping heat shrink tubing is in operation, the first slide 212 in the Y-axis pick-and-place assembly moves from the pick-up end to the unload end under the drive of a rodless cylinder. Simultaneously, the rotary cylinder 32 in the rotary assembly synchronously drives the rotary disk 321 to rotate 180°, allowing the adsorption assembly to complete the orientation adjustment of the heat shrink tubing 92. At this time, the adsorption assembly firmly grips the heat shrink tubing 92 through vacuum suction cups, and the pick-up cylinder 42 controls the translation rod 421 to adjust the distance between the upper vacuum suction cup 441 and the lower vacuum suction cup 442 to accommodate heat shrink tubing of different diameters. When the first slide 212 moves to the unload end, the motor 51 in the Y-axis transfer assembly starts, driving the connecting block 54 via the synchronous belt 52 to move the X-axis translation assembly towards the transfer area. At the same time, the clamping assembly slides from the right end to the left end to the transfer position under the drive of the X-axis rodless cylinder, and the threading cylinder 72 drives the left guide clamp 731 and the right guide clamp 732 to open to form a trumpet mouth 74. In the transfer zone, the adsorption component releases the heat shrink tubing 92, and the clamping component quickly closes the guide clamp to complete the clamping. The reflective optical fiber 76 detects the presence of the heat shrink tubing in real time to ensure accurate transfer. Then, the clamping component moves to the right along the X-axis, and the lifting cylinder 84 in the wire support mechanism 8 adjusts the height of the sleeve end of the wire harness 91 to make it coaxial with the through hole of the heat shrink tubing 92. At the same time, the lifting cylinder 82 controls the left parallel clamp 831 and the right parallel clamp 832 to clamp the wire harness and prevent the sleeve from shifting. The clamping component accurately inserts the heat shrink tubing 92 into the wire harness 91, completing the loading action. The entire process is fully automated through the coordinated control of rodless cylinders, rotary cylinders, synchronous belts, and cylinders, achieving fully automated operation of heat shrink tubing from bulk to wire, significantly improving processing efficiency and accuracy.

[0046] The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention.

[0047] Although this article frequently uses the following terms: 1. First frame; 211. First cylinder; 212. First slide; 221. First guide rail; 222. First slider; 24. Discharge end proximity switch; 31. Second frame; 32. Rotary cylinder; 321. Rotary disk; 41. Third frame; 42. Picking cylinder; 421. Translation rod; 431. Upper suction cup fixing component; 432. Lower suction cup fixing component; 441. Upper vacuum suction cup; 442. Lower vacuum suction cup; 443. Vacuum generator; 45. Limit block; 451. Stop bolt; 46. Baffle; 51. Motor; 52. Synchronous belt; 53. Toothed plate; 54. Connecting block; 552. Second The following terms are used: slider; 561, cable chain plate; 562, cable chain; 60, fourth frame; 611, X-axis cylinder; 612, X-axis slide; 621, X-axis guide rail; 622, X-axis slider; 71, fifth frame; 72, feeding cylinder; 731, left guide clamp; 732, right guide clamp; 74, flared mouth; 75, mounting hole; 76, reflective optical fiber; 77, optical fiber amplifier; 8, wire support mechanism; 81, sixth frame; 82, lifting cylinder; 831, left parallel clamp; 832, right parallel clamp; 84, lifting cylinder; 85, V-shaped wire support block; 91, wire harness; 92, heat shrink tubing, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention, and interpreting them as any additional limitation would be contrary to the spirit of the invention.

Claims

1. An automatic feeding device for heat shrink tubing crimping terminals of automotive wiring harnesses, characterized in that, The application relates to a line taking mechanism, which comprises a first rack (1), a Y-axis taking and transferring assembly, a rotating assembly, an adsorbing assembly, a Y-axis transfer assembly, an X-axis translation assembly, a clamping assembly and a line supporting mechanism (8). The Y-axis taking and transferring assembly comprises a Y-axis rodless cylinder and a first guide rail assembly, the Y-axis rodless cylinder is provided with a first cylinder barrel (211) and a first sliding table (212) which can slide along the first cylinder barrel (211), proximity switches for taking and placing materials are arranged near the two ends of the first cylinder barrel (211) respectively, the first guide rail assembly comprises a first guide rail (221) and a first sliding block (222) which can slide along the first guide rail (221), the first cylinder barrel (211) is arranged in parallel with the first guide rail (221), and the first sliding table (212) moves synchronously with the first sliding block (222). The rotating assembly comprises a second rack (31) and a rotating cylinder (32), the second rack (31) is fixed on the first sliding table (212) and the first sliding block (222), the rotating cylinder (32) is fixedly connected with the second rack (31), the output end of the rotating cylinder (32) is connected with a rotating disc (321), the rotating disc (321) can be driven to rotate at a preset angle, the adsorbing assembly comprises a third rack (41), a taking cylinder (42) and a vacuum chuck, the third rack (41) is fixedly connected with the rotating disc (321), the taking cylinder (42) is fixedly connected with the third rack (41), the output end of the taking cylinder (42) is provided with two translation rods (421) which can approach or move away from each other, the vacuum chuck is fixedly connected with the translation rods (421), and the vacuum chuck is connected with a vacuum generator (443) for controlling taking and placing. The Y-axis transfer assembly comprises a motor (51), a synchronous belt transmission mechanism, a second sliding block (552) and a drag chain (562), the motor (51) is fixedly connected with the first rack (1), the synchronous belt transmission mechanism comprises a first synchronous wheel, a second synchronous wheel and a synchronous belt (52), the first synchronous wheel is connected with the output end of the motor (51), the second synchronous wheel is rotatably connected with the first rack (1), the synchronous belt (52) is meshed with the two synchronous wheels, proximity switches for judging the start and end positions are arranged near the two ends of the synchronous belt (52), the synchronous belt (52) is connected with a connecting block (54) through two oppositely clamped tooth plates (53), one end of the connecting block (54) is fixed with the second sliding block (552), the other end is connected with a drag chain plate (561), and the drag chain (562) is connected with the drag chain plate (561).

2. The automatic loading device for heat-shrink tube of automobile wire harness crimping end according to claim 1, characterized in that, The X-axis translation assembly comprises a fourth rack (60), an X-axis rodless cylinder and an X-axis guide rail assembly, the fourth rack (60) is fixedly connected with the second sliding block (552), the X-axis rodless cylinder is provided with an X-axis cylinder barrel (611) and an X-axis sliding table (612) which can slide along the X-axis cylinder barrel (611), the X-axis guide rail assembly comprises an X-axis guide rail (621) and an X-axis sliding block (622) which can slide along the X-axis guide rail (621), and the X-axis cylinder barrel (611) is arranged in parallel with the X-axis guide rail (621) on the fourth rack (60).

3. The automatic loading device for heat-shrink tube of automobile wire harness crimping end according to claim 2, characterized in that, The clamping assembly comprises a fifth rack (71), a feeding cylinder (72), a left guide clamp (731) and a right guide clamp (732). The fifth rack (71) is fixed on the X-axis sliding table (612) and the X-axis sliding block (622). The feeding cylinder (72) is fixedly connected with the fifth rack (71). The output end of the feeding cylinder (72) is provided with two swing rods which can approach or move away from each other. The left guide clamp (731) and the right guide clamp (732) are fixedly connected with the two swing rods respectively.

4. The automatic loading device for heat-shrink tube of automobile wire harness crimping end according to claim 3, characterized in that, The wire supporting mechanism (8) comprises a sixth rack (81), a lifting cylinder (82) and a lifting-up cylinder (84). The sixth rack (81) is arranged on the right side of the first rack (1). The lifting cylinder (82) and the lifting-up cylinder (84) are arranged on the front side and the rear side of the sixth rack (81) respectively. The output end of the lifting cylinder (82) is connected with a left parallel clamp (831) and a right parallel clamp (832). The output end of the lifting-up cylinder (84) is connected with a V-shaped wire supporting block (85).

5. The automatic loading device for heat-shrink tube of automobile wire harness crimping end according to claim 4, characterized in that, The vacuum chuck of the adsorbing assembly comprises an upper vacuum chuck (441) and a lower vacuum chuck (442). The two translation rods (421) of the feeding cylinder (42) are directly fixed with the upper vacuum chuck (441) and the lower vacuum chuck (442) or indirectly fixed with the upper vacuum chuck (441) and the lower vacuum chuck (442) through an upper chuck fixing piece (431) and a lower chuck fixing piece (432).

6. The automatic loading device for crimping end heat-shrink tube of automobile wire harness according to claim 5, characterized in that, One end of the lower chuck fixing piece (432) is fixed with a limiting block (45). The upper end of the limiting block (45) is provided with a stop bolt (451). The stop bolt (451) can abut against one end of the upper chuck fixing piece (431) to limit the sliding stroke thereof.

7. The automatic loading device for crimping end heat-shrink tube of automobile wire harness according to claim 6, characterized in that, A baffle (46) is arranged on the third rack (41). The baffle (46) can block the axial displacement of the heat shrink tube (92) to position the adsorption point of the vacuum chuck.

8. The automatic loading device for heat-shrink tube of automobile wire harness crimping end according to claim 7, characterized in that, When the left guide clamp (731) and the right guide clamp (732) are closed, a horn mouth (74) is formed. The horn mouth (74) is used for guiding the wire harness (91) to pass through the heat shrink tube (92).

9. The automatic loading device for crimping end heat-shrink tube of automobile wire harness according to claim 8, characterized in that, Coaxial reflective optical fiber mounting holes (75) are arranged on the left guide clamp (731) and the right guide clamp (732) respectively. Reflective optical fibers (76) are arranged in the mounting holes (75). The reflective optical fibers (76) are connected with optical fiber amplifiers (77). The reflective optical fibers (76) are used for detecting whether the heat shrink tube (92) exists or whether the wire harness (91) passes through the heat shrink tube (92).

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