Automatic feeding device for disc-type heat shrink tube

Abstract

The invention belongs to the technical field of wire harness processing equipment, and particularly relates to a disc type heat shrink tube automatic feeding device which comprises a rack, a material rolling mechanism, a feeding detection mechanism, a driving mechanism, a cutting mechanism and a material taking mechanism, the material rolling mechanism comprises a material rolling disc, and the material rolling disc is rotationally connected with the rack; the feeding detection mechanism comprises a material supporting plate, a roller shaft, an extension spring, a proximity switch, a U-groove type photoelectric switch and a guide pipe sleeve assembly, the material supporting plate is fixedly connected with the rack, a stroke hole is formed in the material supporting plate, and connecting parts protrude from the two radial end faces of the roller shaft in the axial direction. Through cooperation of the roll shaft and the extension spring in the material rolling mechanism, the connecting part triggers the proximity switch to achieve overload alarm, meanwhile, the U-groove type photoelectric switch detects whether a material belt exists or not so as to remind material replacement, intelligent detection of faults and material shortage is achieved, and the intelligent level of the device is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of wire harness processing equipment and relates to an automatic feeding device for disc-type heat shrink tubing. Background Technology

[0002] In wire harness processing, the feeding of heat shrink tubing is one of the key processes affecting processing efficiency. In existing technologies, heat shrink tubing feeding typically uses multiple identical or different extrusion conveyor modules to transport the heat shrink tubing strip. This method has significant drawbacks: firstly, the long conveying distance and large number of modules easily lead to excessive tension on the heat shrink tubing strip, causing transmission problems. Furthermore, there is a lack of effective detection mechanisms to provide feedback on transmission faults, resulting in low levels of automation. Secondly, when a roll of heat shrink tubing strip is used up and needs to be replaced, manual verification is required to ensure the strip has passed through each conveyor module and reached the cutting surface. Due to the large number of modules, any obstruction requires manual adjustment, severely impacting replacement efficiency and consequently hindering overall production progress.

[0003] In view of the shortcomings of the existing technology, there is an urgent need for an automatic feeding device for disc heat shrink tubing that can achieve intelligent detection, improve transmission stability and material changing efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing an automatic feeding device for disc-type heat shrink tubing.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: An automatic feeding device for disc-type heat shrink tubing includes a frame, a winding mechanism, a feeding and detection mechanism, a drive mechanism, a cutting mechanism, and a picking mechanism. The winding mechanism includes a winding reel rotatably connected to the frame. Heat shrink tubing strip not cut to a preset length is wound onto the reel. The feeding and detection mechanism includes a support plate, a roller, a tension spring, a proximity switch, a U-shaped photoelectric switch, and a guide sleeve assembly. The support plate is fixedly connected to the frame and has a stroke hole. The roller has two radial end faces with axially protruding connecting portions. These connecting portions pass through the stroke hole and are fixedly connected to one end of the tension spring. The other end of the tension spring... The roller is fixedly connected to the support plate, so that the circumferential surface of the roller shaft and the surface of the support plate form a first gap for the heat shrink tubing material to pass through; the proximity switch is set on one side of the support plate; the U-groove photoelectric switch and the guide tube assembly are arranged sequentially along the conveying direction of the heat shrink tubing material; the drive mechanism is connected to the tube feeding wheel assembly; the tube feeding wheel assembly includes a first tube feeding wheel and a second tube feeding wheel that cooperate with each other, and the two form a second gap for the heat shrink tubing material to pass through; the cutting mechanism includes a first cutting cylinder, a second cutting cylinder, a first cutter and a second cutter; the first cutter is drivenly connected to the first cutting cylinder, and the second cutter is drivenly connected to the second cutting cylinder.

[0006] In the above-mentioned automatic feeding device for disc-type heat shrink tubing, the material handling mechanism includes a material handling cylinder, a suction cup fixing component, a suction cup, and a vacuum generator. The material handling cylinder is connected to the frame through a bracket assembly, and the suction cups are respectively fixed on the suction cup fixing component and are all connected to the vacuum generator.

[0007] In the above-mentioned automatic feeding device for disc-type heat shrink tubing, the guide sleeve assembly includes a first guide sleeve and a second guide sleeve. The first guide sleeve is fixed to the frame by a locking handle. The screw part of the locking handle passes through the through hole of the frame and abuts against the first guide sleeve. The second guide sleeve is fixed to the frame by a limiting handle. The rod of the limiting handle is inserted into the limiting hole of the second guide sleeve to restrict its movement.

[0008] In the above-mentioned automatic feeding device for disc-type heat shrink tubing, the tubing feeding wheel assembly further includes a bearing housing and a material changing cylinder. The first end of the bearing housing is rotatably connected to the connector of the material changing cylinder, and the second tubing feeding wheel is rotatably connected to the first end of the bearing housing through a second rotating shaft.

[0009] In the aforementioned automatic feeding device for disc-type heat shrink tubing, the driving mechanism includes a motor, a first driving gear, a first driven gear, a second driven gear, and a third driven gear. The motor is fixed to the frame via a motor mounting plate, and the motor's drive shaft is fixedly connected to the first driving gear. The first feeding wheel is fixedly connected to the first driven gear via a first rotating shaft, and the first driving gear meshes with the first driven gear for transmission. The third driven gear is rotatably connected to the frame via a third rotating shaft, and the first driving gear meshes with the third driven gear for transmission. The second driven gear is fixed on a second rotating shaft and meshes with the third driven gear for transmission.

[0010] In the aforementioned automatic feeding device for disc-type heat shrink tubing, the drive mechanism further includes a left bearing fixing plate and a right bearing fixing plate, both of which are fixedly connected to the motor fixing plate. The end of the drive shaft where the first drive gear is located is fixedly connected to the inner ring of the first bearing, and the outer ring of the first bearing is fixedly connected to the right bearing fixing plate. The third rotating shaft is rotatably connected to the right bearing fixing plate via a bearing along the right direction of the third driven gear, and is rotatably connected to the second end of the bearing seat and the motor fixing plate in sequence via a bearing along the left direction.

[0011] In the above-mentioned automatic feeding device for disc-type heat shrink tubing, the cutting mechanism further includes a first cutter holder, a second cutter holder, a first slider, a second slider, and a Z-axis guide rail. The first cutter is fixedly connected to the first cutter holder, the first cutter holder is fixedly connected to the first slider, the second cutter is fixedly connected to the second cutter holder, the second cutter holder is fixedly connected to the second slider, and both sliders are slidably connected to the Z-axis guide rail.

[0012] In the aforementioned automatic feeding device for disc-type heat shrink tubing, the piston rod of the first cutting cylinder is provided with a first groove, which is axially limited and matched with the jaw of the first cutter holder; the piston rod of the second cutting cylinder is provided with a second groove, which is axially limited and matched with the jaw of the second cutter holder.

[0013] In the aforementioned automatic feeding device for disc-type heat shrink tubing, the support assembly of the material handling mechanism includes a first support, a second support, an X-axis slider, an X-axis guide rail, and a rodless cylinder. The rodless cylinder includes a cylinder barrel and a slide table. Both the cylinder barrel and the X-axis guide rail are fixedly connected to the frame. The second support is fixedly mounted on the slide tables of the X-axis slider and the rodless cylinder, respectively. The X-axis slider is slidably connected to the X-axis guide rail. The material handling cylinder is fixed to the second support via the first support.

[0014] The aforementioned automatic feeding device for disc-type heat shrink tubing also includes a receiving box, which is located below the cutting mechanism.

[0015] Compared with existing technologies, the advantages of this invention are: 1. This invention utilizes the cooperation between the roller and the tension spring in the winding mechanism. When the heat shrink tubing is taut, it pushes the roller to move, causing the connection part to trigger a proximity switch to achieve an overload alarm. At the same time, the U-groove photoelectric switch detects whether the material is in use and reminds the user to replace the material. This achieves intelligent detection of faults and material shortages, improving the intelligence level of the device.

[0016] 2. The feeding mechanism of this invention adopts a single motor driven multi-gear linkage method, which is combined with the material changing cylinder to drive the second feeding tube wheel to move. When changing materials, the second feeding tube wheel can be moved away from the first feeding tube wheel, which facilitates the material belt to be threaded. This solves the problem that traditional devices need to manipulate the modules one by one when changing materials, greatly improving the material changing efficiency. At the same time, the tightness of the material belt can be controlled by adjusting the second gap spacing to avoid the material belt from sticking up and affecting the processing.

[0017] 3. The guiding mechanism of this invention, in conjunction with the squeezing and adsorption action of the suction cup assembly, improves the stability of material handling. The material handling mechanism achieves horizontal movement through the cooperation of the rodless cylinder and the X-axis guide rail, completing the transfer of heat shrink tubing. The structure is compact and the movement is precise.

[0018] 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

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] Figure 3 This is the present invention. Figure 2Schematic diagram of the exploded structure.

[0022] Figure 4 This is a schematic diagram of the driving mechanism of the present invention.

[0023] Figure 5 This is a schematic diagram of the internal structure of the drive mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the right side of the roll material mechanism of the present invention.

[0025] Figure 7 This is a schematic diagram of the left side of the roll material mechanism of the present invention.

[0026] Figure 8 This is a schematic diagram of the feeding and detection mechanism of the present invention.

[0027] Figure 9 This is the present invention. Figure 8 Schematic diagram of the exploded structure.

[0028] Figure 10 This is a schematic diagram of the tube feeder assembly structure of the present invention.

[0029] Figure 11 This is the present invention. Figure 10 Schematic diagram of the exploded structure.

[0030] Figure 12 This is a schematic diagram of the cutting mechanism of the present invention.

[0031] In the diagram: 11. Frame; 12. First support; 13. Second support; 21. Reel; 22. Material support plate; 220. Stroke hole; 23. Roller; 231. Connecting part; 24. U-groove photoelectric switch; 25. First guide sleeve; 251. Locking handle; 261. First feed roller; 262. Second feed roller; 27. Second guide sleeve; 271. Limit handle; 28. Proximity switch; 29. ​​Tension spring; 31. First driven gear; 310. First rotating shaft; 32. Second driven gear; 320. Second rotating shaft; 33. Third driven gear; 330. Third rotating shaft; 34. First driving gear; 35. Motor; 36. Material changing cylinder; 37. Bearing seat; 38. Motor mounting plate; 391 392. Right bearing fixing plate; 411. Left bearing fixing plate; 412. First cutting cylinder; 413. Second cutting cylinder; 424. First slot; 425. Second slot; 436. First knife holder; 436. Second knife holder; 447. First cutter; 448. Second cutter; 459. First slider; 459. Second slider; 46. Z-axis guide rail; 47. Material receiving box; 58. Material picking cylinder; 590. Suction cup fixing component; 60. Vacuum generator; 61. Suction cup; 72. Cylinder; 73. Slide table; 74. X-axis guide rail; 75. X-axis slider; 86. Y-axis motor; 87. Clamping cylinder; 88. Gripper; 89. Guide clamp; 80. Lifting cylinder; 91. Wire harness; 92. Heat shrink tubing; 93. Heat shrink tubing material tape. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] like Figure 1-12 As shown, a heat shrink tubing feeding device includes a frame 11, a winding mechanism, a feeding and detection mechanism, a driving mechanism, a cutting mechanism, and a picking mechanism. The winding mechanism includes a winding reel 21, which is rotatably connected to the frame 11. Heat shrink tubing 93 that has not been cut to a preset length is wound around the winding reel 21. The feeding and detection mechanism includes a material support plate 22, a roller 23, a tension spring 29, a proximity switch 28, a U-shaped photoelectric switch 24, and a guide tube assembly. The material support plate 22 is fixedly connected to the frame 11 and has a stroke hole 220. The two radial end faces of the roller 23 have connecting parts 231 protruding axially. The connecting parts 231 pass through the stroke hole 220 and are fixedly connected to one end of the tension spring 29. The other end of the tension spring 29 is fixedly connected to the material support plate 22, so that the circumferential surface of the roller 23 and the surface of the material support plate 22 form a first gap for the heat shrink tubing 93 to pass through. The proximity switch 28 is located on one side of the material support plate 22, and the U-shaped photoelectric switch 24 and the guide tube assembly are arranged sequentially along the conveying direction of the heat shrink tubing 93. The drive mechanism is connected to the tube feeding wheel assembly, which includes a first tube feeding wheel 261 and a second tube feeding wheel 262 that cooperate with each other, forming a second gap through which the heat-supply shrink tube material strip 93 passes. The cutting mechanism includes a first cutting cylinder 411, a second cutting cylinder 412, a first cutter 441 and a second cutter 442. The first cutter 441 is drivenly connected to the first cutting cylinder 411, and the second cutter 442 is drivenly connected to the second cutting cylinder 412.

[0034] Furthermore, the material handling mechanism includes a material handling cylinder 51, a suction cup fixing component 52, a suction cup 62, and a vacuum generator 61. The material handling cylinder 51 is connected to the frame 11 through a bracket assembly, and the suction cups 62 are respectively fixed on the suction cup fixing component 52 and are all connected to the vacuum generator 61.

[0035] Furthermore, the guide sleeve assembly includes a first guide sleeve 25 and a second guide sleeve 27. The first guide sleeve 25 is fixed to the frame 11 by a locking handle 251, and the screw portion of the locking handle 251 passes through the through hole of the frame 11 and abuts against the first guide sleeve 25. The second guide sleeve 27 is fixed to the frame 11 by a limiting handle 271, and the rod of the limiting handle 271 is inserted into the limiting hole of the second guide sleeve 27 to restrict its movement.

[0036] Furthermore, the tube feeding wheel assembly also includes a bearing housing 37 and a material changing cylinder 36. The first end of the bearing housing 37 is rotatably connected to the connector of the material changing cylinder 36, and the second tube feeding wheel 262 is rotatably connected to the first end of the bearing housing 37 through a second rotating shaft 320.

[0037] Furthermore, the drive mechanism includes a motor 35, a first driving gear 34, a first driven gear 31, a second driven gear 32, and a third driven gear 33. The motor 35 is fixed to the frame 11 via a motor mounting plate 38. The drive shaft of the motor 35 is fixedly connected to the first driving gear 34. The first tube feeding wheel 261 is fixedly connected to the first driven gear 31 via a first rotating shaft 310. The first driving gear 34 meshes with the first driven gear 31 for transmission. The third driven gear 33 is rotatably connected to the frame 11 via a third rotating shaft 330. The first driving gear 34 meshes with the third driven gear 33 for transmission. The second driven gear 32 is fixed on the second rotating shaft 320 and meshes with the third driven gear 33 for transmission.

[0038] Furthermore, the drive mechanism also includes a left bearing fixing plate 392 and a right bearing fixing plate 391, both of which are fixedly connected to the motor fixing plate 38. The end of the drive shaft where the first driving gear 34 is located is fixedly connected to the inner ring of the first bearing, and the outer ring of the first bearing is fixedly connected to the right bearing fixing plate 391. The third rotating shaft 330 is rotatably connected to the right bearing fixing plate 391 via a bearing along the right direction of the third driven gear 33, and is rotatably connected to the second end of the bearing seat 37 and the motor fixing plate 38 in sequence via a bearing along the left direction.

[0039] Furthermore, the cutting mechanism also includes a first cutter holder 431, a second cutter holder 432, a first slider 451, a second slider 452, and a Z-axis guide rail 46. The first cutter 441 is fixedly connected to the first cutter holder 431, the first cutter holder 431 is fixedly connected to the first slider 451, the second cutter 442 is fixedly connected to the second cutter holder 432, the second cutter holder 432 is fixedly connected to the second slider 452, and both sliders are slidably connected to the Z-axis guide rail 46.

[0040] Furthermore, the piston rod of the first cutting cylinder 411 is provided with a first groove 421, which is axially limited and engaged with the jaw of the first cutter holder 431, and the piston rod of the second cutting cylinder 412 is provided with a second groove 422, which is axially limited and engaged with the jaw of the second cutter holder 432.

[0041] Furthermore, the support assembly of the material handling mechanism includes a first support 12, a second support 13, an X-axis slider 74, an X-axis guide rail 73, and a rodless cylinder. The rodless cylinder includes a cylinder barrel 71 and a slide table 72. Both the cylinder barrel 71 and the X-axis guide rail 73 are fixedly connected to the frame 11.

[0042] Furthermore, the second bracket 13 is fixed on the X-axis slider 74 and the slide table 72 of the rodless cylinder respectively. The X-axis slider 74 is slidably connected to the X-axis guide rail 73, and the material picking cylinder 51 is fixed on the second bracket 13 through the first bracket 12.

[0043] Furthermore, it also includes a receiving box 47, which is disposed below the cutting mechanism.

[0044] The working principle of this invention is: In use, the reel 21 is rotatably mounted on the frame 11. When heat shrink tubing loading is required, the heat shrink tubing strip 93, which is not cut to a preset length, is wound onto the reel 21. As the device operates, the heat shrink tubing strip 93 is stretched, and the reel 21 rotates relative to the frame 11 under tension, thereby achieving unloading.

[0045] The support plate 22 is fixedly mounted on the frame 11, serving to support and guide the heat shrink tubing strip 93. The roller 23 passes through the stroke hole 220 of the support plate 22 via connecting portions 231 protruding axially from its two radial end faces, and the connecting portions 231 are fixedly connected to one end of a tension spring 29, the other end of which is fixed to the support plate 22. This structure creates a first gap between the circumferential surface of the roller 23 and the surface of the support plate 22, through which the heat shrink tubing strip 93 passes.

[0046] During normal feeding, the heat shrink tubing tape 93 passes through the first gap, at which point the connecting part 231 is located at the first limit end of the travel hole 220. When the heat shrink tubing tape 93 is tightened, it generates an upward pulling force on the roller 23, forcing the connecting part 231 to move to the second limit end within the travel hole 220. At this time, the circumferential surface of the roller 23 moves away from the surface of the support plate 22, and the width of the first gap increases. A proximity switch 28 installed in a suitable position can detect the connecting part 231 located at the second limit end. Upon detecting the signal, the device will issue an overload alarm, prompting the operator to move the roller 23 forward to narrow the width of the first gap, ensuring the normal conveying of the heat shrink tubing tape 93 and avoiding interference with transmission or even damage to the equipment due to excessive tension.

[0047] After the heat shrink tubing tape 93 passes through the first slot, it passes through the U-groove type photoelectric switch 24. The U-groove type photoelectric switch 24 can determine the presence or absence of the heat shrink tubing tape 93. When a roll of heat shrink tubing tape 93 is used up, the U-groove type photoelectric switch 24 will not detect the heat shrink tubing tape 93 and will send a signal to remind the operator to replace the tape, which improves the timeliness and accuracy of tape replacement and avoids production interruptions caused by the failure to replace the tape in time. Afterwards, the heat shrink tubing tape 93 enters the first guide sleeve 25. The first guide sleeve 25 is fixed to the frame 11 by the locking handle 251. The screw part of the locking handle 251 passes through the through hole of the frame 11 and abuts against the first guide sleeve 25, ensuring the stability of the position of the first guide sleeve 25.

[0048] After passing through the first guide sleeve 25, the heat shrink tubing 93 enters the second gap formed by the first feed roller 261 and the second feed roller 262. Driven by the motor 35, the first and second feed rollers 261 and 262 rotate, conveying the heat shrink tubing 93 towards the cutting surface. The second guide sleeve 27 is fixed to the frame 11 by a limiting handle 271. The rod of the limiting handle 271 is inserted into the limiting hole of the second guide sleeve 27, restricting its movement and ensuring that the heat shrink tubing 93 can accurately enter the subsequent processing stage. The inlets of the two guide sleeves are designed in a funnel or trumpet shape to facilitate the insertion of the heat shrink tubing 93; the outlet cross-section is a rhomboid shape with a width greater than its height in the Z direction. This special shape allows the heat shrink tubing 93 to be slightly flattened, facilitating subsequent flattening and adsorption operations.

[0049] The drive shaft of motor 35 is fixedly connected to the first driving gear 34, the end of the drive shaft is fixedly connected to the inner ring of the first bearing, the outer ring of the first bearing is fixedly connected to the right bearing fixing plate 391, the right bearing fixing plate 391 is fixedly connected to the motor fixing plate 38, and the left bearing fixing plate 392 is also fixedly connected to the motor fixing plate 38. This structure enables the first driving gear 34 to rotate stably, and through meshing with the first driven gear 31 and the third driven gear 33, it transmits power to the first tube feed wheel 261 and the third driven gear 33.

[0050] The first rotating shaft 310 is fixedly connected axially to the first driven gear 31 and the first tube feeding wheel 261, and is rotatably connected to the left bearing fixing plate 392 and the motor fixing plate 38. Both the left bearing fixing plate 392 and the motor fixing plate 38 are equipped with bearings. The inner rings of the bearings on the two fixing plates are fixedly connected to the first rotating shaft 310, and the outer rings of the bearings on the two fixing plates are fixedly connected to the two fixing plates, ensuring that the first tube feeding wheel 261 can rotate smoothly and realize the conveying of the heat shrinkable tube material tape 93.

[0051] The second rotating shaft 320 is axially fixedly connected to the second driven gear 32, the second pipe feed wheel 262, and the inner ring of the second bearing. The outer ring of the second bearing is fixedly connected to the first end of the bearing housing 37, allowing the second rotating shaft 320 to be rotatably connected to the first end of the bearing housing 37. The third rotating shaft 330 is axially fixedly connected to the third driven gear 33. Along the leftward direction of the third driven gear 33, it is rotatably connected to the second end of the bearing housing 37 and the motor mounting plate 38 via bearings. Along the rightward direction of the third driven gear 33, it is rotatably connected to the right bearing mounting plate 391 via bearings, allowing the second driven gear 32 and the third driven gear 33 to mesh and transmit power. The first end of the bearing housing 37 is rotatably connected to the connector of the material changing cylinder 36, and the first end of the bearing housing 37 can rotate relative to the second end.

[0052] During material changing, the material changing cylinder 36 adjusts the position of the bearing seat 37 by extending and retracting the piston rod, thereby moving the second feeding roller 262 away from the first feeding roller 261, increasing the distance of the second gap, and facilitating the operator to perform material changing operations. During material feeding, the material changing cylinder 36 drives the second feeding roller 262 to approach the first feeding roller 261, reducing the distance of the second gap, ensuring that the heat shrinkable tubing strip 93 can be stably extruded and conveyed, while avoiding the heat shrinkable tubing strip 93 from protruding from the cutting surface and curling upwards due to excessive extrusion, which would affect subsequent cutting and processing.

[0053] After the heat shrink tubing tape 93 is conveyed to the cutting surface, the first cutting cylinder 411 and the second cutting cylinder 412 begin to operate. The piston rod of the first cutting cylinder 411 has a first groove 421, which is axially limited by the jaw of the first cutter holder 431. The first cutter holder 431 is fixedly connected to the first cutter 441, and the first cutter holder 431 is also fixedly connected to the first slider 451. The first slider 451 is slidably connected to the Z-axis guide rail 46. Similarly, the piston rod of the second cutting cylinder 412 has a second groove 422, which is axially limited by the jaw of the second cutter holder 432. The second cutter holder 432 is fixedly connected to the second cutter 442, and the second cutter holder 432 is fixedly connected to the second slider 452. The second slider 452 is also slidably connected to the Z-axis guide rail 46. Two cutting cylinders drive two sliders to move towards each other, which in turn causes the first cutter 441 and the second cutter 442 to move towards each other, thereby cutting the heat shrink tubing material 93 to form the heat shrink tubing 92.

[0054] The cut heat shrink tubing 92 needs to be picked up and transported by the picking cylinder 51. The picking cylinder 51 is fixed to the second support 13 via the first bracket 12. The second support 13 is fixed to the X-axis slider 74 and the slide table 72 of the rodless cylinder. The X-axis slider 74 is slidably connected to the X-axis guide rail 73. The slide table 72 of the rodless cylinder can slide on its cylinder barrel 71. The cylinder barrel 71 and the X-axis guide rail 73 are both fixedly connected to the frame 11. This structure allows the picking cylinder 51 to move in the X-axis direction. The picking cylinder 51 drives the two suction cup fixing parts 52 to move away from or closer to each other. The two suction cups 62 are respectively fixed to the suction cup fixing parts 52 and are both connected to the vacuum generator 61. When the picking cylinder 51 is located to the right of the X-axis guide rail 73, the suction cups 62 squeeze the heat shrink tubing strip 93 towards each other, flatten it, and then generate negative pressure through the vacuum generator 61 to pick up the heat shrink tubing 92. Then the first cutter 441 and the second cutter 442 cut the heat shrink tubing material 93, the suction cup 62 picks up the heat shrink tubing 92 and moves it to the left, and the part that is not picked up falls into the receiving box 47.

[0055] As the suction cup 62 adheres to the heat shrink tubing 92 and moves to the left, the suction cup 62 moves relatively away to spread the heat shrink tubing 92. Then, the guide clamp 84 of the bulk heat shrink tubing feeding device clamps the heat shrink tubing 92 and moves it backward to insert the heat shrink tubing 92 into the wire harness 91. Specifically, the wire clamping and conveying device is located behind the lifting cylinder 85, and behind the wire clamping and conveying device is the transfer device. In the transfer device, the clamping cylinder 82 drives the opening and closing of the gripper 83, and the Y-axis motor 81 drives the gripper 83 to move in the Y direction via a lead screw drive. The left-end wire clamping and conveying device moves from left to right to insert the tubing.

[0056] 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.

[0057] Although this article frequently uses the following names: 11. Frame; 12. First support; 13. Second support; 21. Reel; 22. Material support plate; 220. Stroke hole; 23. Roller; 231. Connecting part; 24. U-groove photoelectric switch; 25. First guide sleeve; 251. Locking handle; 261. First feed roller; 262. Second feed roller; 27. Second guide sleeve; 271. Limit handle; 28. Proximity switch; 29. ​​Tension spring; 31. First driven gear; 310. First rotating shaft; 32. Second driven gear; 320. Second rotating shaft; 33. Third driven gear; 330. Third rotating shaft; 34. First driving gear; 35. Motor; 36. Material changing cylinder; 37. Bearing seat; 38. Motor fixing plate; 391. Right bearing fixing plate The following terms are used: 392. Left bearing fixing plate; 411. First cutting cylinder; 412. Second cutting cylinder; 421. First slot; 422. Second slot; 431. First tool holder; 432. Second tool holder; 441. First cutter; 442. Second cutter; 451. First slider; 452. Second slider; 46. Z-axis guide rail; 47. Material receiving box; 51. Material picking cylinder; 52. Suction cup fixing component; 61. Vacuum generator; 62. Suction cup; 71. Cylinder; 72. Slide table; 73. X-axis guide rail; 74. X-axis slider; 81. Y-axis motor; 82. Clamping cylinder; 83. Gripper; 84. Guide clamp; 85. Lifting cylinder; 91. Wire harness; 92. Heat shrink tubing; 93. Heat shrink tubing tape, etc., but the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention, and interpreting them as any kind of additional limitation would be contrary to the spirit of the invention.

Claims

1. An automatic feeding device for disc-type heat shrink tubing, characterized in that, It comprises a rack (11), a material winding mechanism, a feeding detection mechanism, a driving mechanism, a cutting mechanism and a material taking mechanism. The material winding mechanism comprises a material winding disc (21), which is rotationally connected with the rack (11), and the heat-shrinkable tube material belt (93) not cut off according to the preset length is wound on the material winding disc (21). The feeding detection mechanism comprises a material supporting plate (22), a roller shaft (23), a tension spring (29), a proximity switch (28), a U-slot photoelectric switch (24) and a guide tube sleeve assembly, the material supporting plate (22) is fixedly connected with the rack (11), and a stroke hole (220) is formed in the material supporting plate (22), two radial end faces of the roller shaft (23) protrude in the axial direction and are provided with connecting portions (231), the connecting portions (231) are fixedly connected with one end of the tension spring (29) after penetrating through the stroke hole (220), the other end of the tension spring (29) is fixedly connected with the material supporting plate (22), and the circumferential surface of the roller shaft (23) and the surface of the material supporting plate (22) form a first gap for the heat-shrinkable tube material belt (93) to pass through; the proximity switch (28) is arranged on one side of the material supporting plate (22), and the U-slot photoelectric switch (24) and the guide tube sleeve assembly are sequentially arranged along the conveying direction of the heat-shrinkable tube material belt (93). The driving mechanism is connected with a pipe feeding wheel assembly, and the pipe feeding wheel assembly comprises a first pipe feeding wheel (261) and a second pipe feeding wheel (262) which cooperate with each other and form a second gap for the heat-shrinkable tube material belt (93) to pass through. The cutting mechanism comprises a first cutting cylinder (411), a second cutting cylinder (412), a first cutting knife (441) and a second cutting knife (442), the first cutting knife (441) is in transmission connection with the first cutting cylinder (411), and the second cutting knife (442) is in transmission connection with the second cutting cylinder (412).

2. The automatic disc heat shrink tube loading device according to claim 1, characterized in that, The material taking mechanism comprises a material taking cylinder (51), a suction disc fixing member (52), a suction disc (62) and a vacuum generator (61), the material taking cylinder (51) is connected with the rack (11) through a support assembly, the suction disc (62) is fixed on the suction disc fixing member (52) and connected with the vacuum generator (61).

3. The automatic disc heat shrink tube loading device according to claim 2, characterized in that, The guide tube sleeve assembly comprises a first guide tube sleeve (25) and a second guide tube sleeve (27), the first guide tube sleeve (25) is fixed with the rack (11) through a clamping handle (251), the screw rod part of the clamping handle (251) penetrates through the through hole of the rack (11) and abuts against the first guide tube sleeve (25), and the second guide tube sleeve (27) is fixed with the rack (11) through a limiting handle (271), the rod body of the limiting handle (271) is inserted into the limiting hole of the second guide tube sleeve (27) to limit the movement of the second guide tube sleeve (27).

4. The automatic loading device for disc heat-shrinkable tube according to claim 3, characterized in that, The pipe feeding wheel assembly further comprises a bearing seat (37) and a material replacing cylinder (36), the first end of the bearing seat (37) is rotationally connected with the joint of the material replacing cylinder (36), and the second pipe feeding wheel (262) is rotationally connected with the first end of the bearing seat (37) through a second rotating shaft (320).

5. The automatic loading device for heat-shrinkable tube according to claim 4, wherein The driving mechanism comprises a motor (35), a first driving gear (34), a first driven gear (31), a second driven gear (32) and a third driven gear (33), the motor (35) is fixed with the frame (11) through a motor fixing plate (38), the driving shaft of the motor (35) is fixedly connected with the first driving gear (34), the first pipe feeding wheel (261) is fixedly connected with the first driven gear (31) through a first rotating shaft (310), the first driving gear (34) is in meshing transmission with the first driven gear (31), the third driven gear (33) is rotatably connected with the frame (11) through a third rotating shaft (330), the first driving gear (34) is in meshing transmission with the third driven gear (33), and the second driven gear (32) is fixed on a second rotating shaft (320) and in meshing transmission with the third driven gear (33).

6. The automatic disc heat shrink tube loading device according to claim 5, characterized in that, The driving mechanism further comprises a left bearing fixing plate (392) and a right bearing fixing plate (391), both of which are fixedly connected with the motor fixing plate (38), the end of the driving shaft where the first driving gear (34) is located is fixedly connected with the inner ring of a first bearing, and the outer ring of the first bearing is fixedly connected with the right bearing fixing plate (391); the third rotating shaft (330) is rotatably connected with the right bearing fixing plate (391) through a bearing along the right direction of the third driven gear (33) and rotatably connected with the second end of the bearing seat (37) and the motor fixing plate (38) in sequence along the left direction through a bearing.

7. The automatic disc heat shrink tube loading device according to claim 6, characterized in that, The cutting mechanism further comprises a first cutter seat (431), a second cutter seat (432), a first sliding block (451), a second sliding block (452) and a Z-axis guide rail (46), the first cutter (441) is fixedly connected with the first cutter seat (431), the first cutter seat (431) is fixedly connected with the first sliding block (451), the second cutter (442) is fixedly connected with the second cutter seat (432), the second cutter seat (432) is fixedly connected with the second sliding block (452), and both sliding blocks are slidably connected with the Z-axis guide rail (46).

8. The automatic disc heat shrink tube loading device according to claim 7, characterized in that, The piston rod of the first cutting cylinder (411) is provided with a first clamping groove (421) which is axially limited in cooperation with the clamping opening of the first cutter seat (431), and the piston rod of the second cutting cylinder (412) is provided with a second clamping groove (422) which is axially limited in cooperation with the clamping opening of the second cutter seat (432).

9. The automatic disc heat shrink tube loading device according to claim 8, characterized in that, The support assembly of the material taking mechanism comprises a first support (12), a second support (13), an X-axis sliding block (74), an X-axis guide rail (73) and a rodless cylinder, the rodless cylinder comprises a cylinder barrel (71) and a sliding table (72), and the cylinder barrel (71) and the X-axis guide rail (73) are both fixedly connected with the frame (11), the second support (13) is respectively fixed on the X-axis sliding block (74) and the sliding table (72) of the rodless cylinder, the X-axis sliding block (74) is slidably connected with the X-axis guide rail (73), and the material taking cylinder (51) is fixed on the second support (13) through the first support (12).

10. The automatic disc heat shrink tube loading device according to claim 9, characterized in that, It further comprises a material receiving box (47), which is arranged below the cutting mechanism.

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