Automatic processing device for connecting wire harness

Abstract

The invention relates to the technical field of connecting wire harness processing, in particular to an automatic connecting wire harness processing device which comprises a rack, a heat shrink tube processing mechanism, a wire harness feeding mechanism and a feeding heat shrink mechanism, and the heat shrink tube processing mechanism, the wire harness feeding mechanism and the feeding heat shrink mechanism are integrated on the rack. The heat shrink tube processing mechanism comprises a cutting assembly, a feeding assembly and a shaping transmission part, the shaping transmission part comprises a heat shrink sleeve, right-angle shaping plates symmetrically arranged in the heat shrink sleeve and a driving part, and radial supporting force is applied to the heat shrink tube through the right-angle shaping plates so as to maintain a circle. The shaping guide rod is synchronously driven to drive the right-angle shaping plate to act by utilizing the collision force after the heat shrink tube is fed in place, so that the synergistic effect of feeding and shaping is realized, stable radial support can be provided for the heat shrink tube without an additional driving source, the heat shrink tube is kept round in the whole process, the feeding smoothness is not influenced, and the production efficiency is improved. And the processing requirements of heat shrink tubes with different diameters and wall thicknesses are met, and the limitation of a traditional independent anti-collapse structure is eliminated.

Description

Technical Field

[0001] This invention relates to the field of wire harness processing technology, specifically an automatic wire harness processing device. Background Technology

[0002] In the field of wire harness processing, heat shrink tubing is a key process to ensure the insulation, sealing, wear resistance, and aging resistance of wire harnesses. Especially in scenarios such as automotive precision electronic control, communication equipment, and consumer electronics, it is widely used to connect wire harnesses to the outer periphery of the connection end of miniature terminals (such as miniature insert type, flag-shaped barbed spring, and small bullet-shaped terminal). These terminals are small in size, and the connection end structure between the terminal and the wire harness is fragile. They need to be tightly wrapped with heat shrink tubing to achieve insulation protection, reinforcement and sealing, and vibration resistance to prevent detachment, thus ensuring connection reliability.

[0003] As the industry's requirements for wire harness processing efficiency and product consistency continue to increase, traditional heat shrink tubing processing methods are gradually revealing their insufficient specificity in processing the particular combination of small terminals and wire harnesses. Existing equipment is not designed for the processing characteristics of these small-sized connectors. The feeding and shaping of heat shrink tubing are completely disconnected. Cut heat shrink tubing needs to be manually transferred or transported to the insertion station by a separate mechanism. The flexible material of the heat shrink tubing is prone to flattening due to compression and its own weight during transfer or feeding. Furthermore, during insertion, existing feeding structures use a direct insertion method. This method, due to surface contact, has significant friction, easily leading to insertion obstruction, which is exacerbated when the heat shrink tubing has flattened. This results in low processing efficiency and, due to the cumulative errors from multiple stages, affects product consistency. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic processing device for connecting wire harnesses to solve the problems mentioned in the background art.

[0005] The objective of this invention can be achieved through the following technical solutions: An automatic processing device for connecting wire harnesses, preferably, includes a frame and a heat shrink tubing processing mechanism, a wire harness feeding mechanism, and a feeding heat shrink mechanism integrated on the frame; The heat shrink tubing processing mechanism includes a cutting component, a feeding component, and a shaping transmission component. The shaping transmission component includes a heat shrink sleeve, right-angle shaping plates symmetrically arranged inside the heat shrink sleeve, and a driving component. The right-angle shaping plates apply radial support force to the heat shrink tubing to maintain its circular shape. The wire harness feeding mechanism includes a U-shaped gripper for carrying the wire harness and a positioning component. The positioning component drives the U-shaped gripper to move the wire harness so that the end of the wire harness is coaxially aligned with the heat shrink tubing at the feeding station. The feeding heat shrinking mechanism includes a feeding component, an electric heating element, and a transmission component. The feeding component includes a helical rack, a helical gear, and a drive source. The helical rack and the helical gear mesh to drive the wire harness to move back and forth along the axial direction of the heat shrink tube, while simultaneously driving the wire harness to rotate spirally around its own axis and insert into the heat shrink tube. The electric heating element corresponds to the feeding station. One end of the transmission component is fixed to the feeding component, and the other end is connected to the electric heating element, so that the feeding component drives the electric heating element to reciprocate along the outer periphery of the heat shrink tube.

[0006] Preferably, the cutting assembly includes a transmission rod hinged to one end of the frame, a lower pressure roller rotatably connected to the end of the transmission rod, a tension spring fixedly connected to the middle section of the transmission rod, the other end of the tension spring fixedly connected to the frame, and a support roller rotatably connected to one end of the frame, so that the lower pressure roller always abuts against the support roller through the tension spring. A feeding motor is fixedly connected to one end of the frame. The output end of the feeding motor is fixedly connected to the support roller. The feeding motor drives the support roller to rotate, which in turn feeds the heat shrink tubing with the lower pressure roller. A support sleeve is fixedly connected to one end of the frame. The support sleeve is located between the support roller and the heat shrink sleeve and is used to guide the heat shrink tubing to enter the heat shrink sleeve accurately. An electric push rod is fixedly connected to the top of the frame. An installation plate is fixedly connected to the output end of the electric push rod. A lifting slide rod that is slidably connected to the frame is symmetrically fixed to one end of the installation plate. A cutting blade is provided at the bottom of the installation plate. The electric push rod drives the installation plate to move the cutting blade up and down, thereby cutting the heat shrink tubing.

[0007] Preferably, the feeding assembly includes a guide slide rod symmetrically slidably disposed at one end of the frame, a sequence spring sleeved on the outer periphery of the guide slide rod, the sequence spring being disposed between the top of the frame and the end of the guide slide rod, the guide slide rod being reset by the sequence spring, and a limit ring being provided in the middle section of the guide slide rod to limit the rebound stroke of the sequence spring; One end of the frame is provided with a lifting slide groove along the axial direction of the lifting slide rod, and a lifting rack is slidably arranged inside the lifting slide groove. One end of the lifting rack is fixedly connected to the cutting blade. One end of the frame is fixedly connected to a rack, and the bottom of the mounting plate is rotatably connected to a lifting gear, which meshes synchronously with the rack and the rack. When the mounting plate is raised or lowered, the lifting gear rolls along the fixed rack, which drives the lifting rack to drive the cutting blade to slide back and forth, realizing automatic cutting and feeding of heat shrink tubing.

[0008] Preferably, the driving component of the shaping transmission component is a shaping guide rod, a shaping spring, and a shaping abutment rod; The shaping guide rod is symmetrically fixedly connected to the bottom of a right-angle shaping plate. The bottom of the shaping guide rod passes through the heat shrink sleeve and extends downward. A shaping spring is sleeved on the outer periphery. The shaping spring is located between the bottom of the heat shrink sleeve and the lower end of the shaping guide rod. A pair of shaping abutment rods are fixedly connected to one end of the frame. The two shaping abutment rods are symmetrically arranged on both sides of the electric heating element, and the top of the shaping abutment rod corresponds to the lower end of the shaping guide rod. When the heat shrink tubing is fed to the target position, the lower end of the shaping guide rod contacts the top of the shaping abutment rod, pushing the shaping guide rod upward and causing the right-angle shaping plate to move closer to the heat shrink tubing, thus achieving the shaping of the heat shrink tubing.

[0009] Preferably, the positioning component includes an arc-shaped support hinged to one end of the frame, corresponding to the loading station, for supporting the end of the connecting wire harness. A feeding trough is provided in the middle section of the frame, and a conveyor belt is provided inside the feeding trough. The conveyor belt is located below the arc-shaped support and the U-shaped gripper for conveying the processed wire harness.

[0010] Preferably, the positioning assembly further includes a pair of synchronous pulleys rotatably connected to one end of the frame, with a synchronous belt sleeved on the outer periphery of the two synchronous pulleys, one synchronous pulley being coaxially fixed with the U-shaped gripper, and the other synchronous pulley being coaxially fixedly connected with a transmission gear. The arc-shaped support is coaxially fixedly connected to a second transmission gear. A transmission rack meshes synchronously between the first and second transmission gears. An electric push rod is fixedly connected to one end of the frame. The output end of the electric push rod is fixedly connected to the transmission rack. The electric push rod drives the transmission rack to move, which in turn drives the first transmission gear and the synchronous wheel to rotate, so that the U-shaped gripper and the arc-shaped support move synchronously to complete the loading and unloading of the wire harness.

[0011] Preferably, the feeding assembly includes a U-shaped slide bar, a helical rack, a helical gear, and a three-jaw clamp; The U-shaped slide bar is slidably disposed at one end of the frame and can move along the axial direction of the heat shrink tubing. A helical gear is rotatably connected to the middle section of the U-shaped slide bar, and a helical gear is symmetrically rotatably connected to one end of the frame. The helical gear meshes synchronously with the two helical gears. One end of the helical gear passes through a U-shaped slide bar and is fixedly connected to a three-jaw clamp. The three-jaw clamp is used to hold the connecting wire harness. The rotation of the helical gear causes the wire harness to rotate around its own axis.

[0012] Preferably, the drive source of the feed assembly includes a driven gear, a reducer, a drive gear, and a feed motor; The driven gear is fixedly connected to the bottom of the helical gear, and a reducer is fixedly connected to the bottom of the frame. The output end of the reducer passes through the frame and is fixedly connected to a driving gear that meshes synchronously with the two driven gears. The input end of the reducer is fixedly connected to a feed motor. The feed motor drives the drive gear to rotate, which in turn drives the driven gear, helical gear, and helical rack to move in tandem, so as to realize the synchronous axial feeding and rotation of the wire harness.

[0013] Preferably, the transmission assembly includes an arc-shaped support base, a U-shaped frame, a transmission disc, an eccentric column, and a torsion spring. The arc-shaped support base is fixedly connected to one end of the frame. The top is symmetrically provided with arc-shaped through grooves. The trajectory of the arc-shaped through grooves is adapted to the outer periphery of the electric heating element. The bottom of the electric heating element is fixedly connected with a U-shaped frame. The bottom of the U-shaped frame passes through the arc-shaped through groove and is provided with through holes. One end of the frame is rotatably connected to a transmission disc, and an eccentric column is eccentrically provided on the top of the transmission disc. The eccentric column passes through the through hole, and a torsion spring is provided at one end of the frame. When the transmission disc rotates, the eccentric column slides along the through hole and drives the U-shaped frame to move back and forth along the arc-shaped through groove, so that the electric heating element deflects along the outer circumference of the heat shrink tubing. A one-way transmission assembly is provided between the transmission disc and the power storage gear. The one-way transmission assembly includes a ratchet wheel fixed to the end of the transmission disc shaft, a pawl hinged to the frame, and an elastic element. The elastic element drives the pawl to fit against the tooth surface of the ratchet wheel. One end of the power storage torsion spring is fixed to the ratchet wheel, and the other end is fixed to the frame. When charging, the charging gear rotates in the forward direction, which drives the pawl to rotate the spur wheel and the transmission disc, causing the charging torsion spring to charge. When resetting, the charging gear rotates in the reverse direction, the pawl slides along the tooth surface of the spur wheel, and the spur wheel and the charging torsion spring remain stationary and do not charge in the reverse direction.

[0014] Preferably, the transmission assembly further includes a power storage gear, a power storage rack, a transmission inclined rail, a feed rod, and a transmission insert rod; The energy storage gear is fixedly connected to the shaft end of the transmission disc, and an energy storage slide rail is provided at one end of the frame. An energy storage rack that meshes with the energy storage gear is slidably provided on the top of the energy storage slide rail. One end of the power storage rack is fixedly connected to a transmission inclined rail, one end of the U-shaped slide rod is fixedly connected to a feed rod, the bottom of the feed rod is fixedly connected to a transmission insert rod, and the transmission insert rod extends into the interior of the transmission inclined rail.

[0015] The beneficial effects of this invention are: 1. This invention utilizes the resistance force after the heat shrink tubing is in place to simultaneously drive the shaping guide rod to move the right-angle shaping plate, achieving a synergistic effect of shaping upon loading. Without the need for an additional driving source, it can provide stable radial support for the heat shrink tubing, ensuring that the heat shrink tubing maintains its circular shape throughout the process without affecting the smoothness of loading. It is suitable for the processing needs of heat shrink tubing with different diameters and wall thicknesses, and overcomes the limitations of traditional independent anti-flattening structures.

[0016] 2. This invention uses a synchronous wheel, a transmission rack and other structures to enable precise coordination between wire harness positioning and insertion. After the positioning component aligns with the heat shrink tubing station, the feeding component immediately starts the axial propulsion and rotational spiral feeding mode. This not only transforms the traditional linear insertion surface contact into line contact, reducing insertion resistance and avoiding jamming and scratches, but also allows the wire harness to fully adhere to the inner wall of the heat shrink tubing through rotation, laying the foundation for high-quality heat shrinking.

[0017] 3. This invention utilizes a ratchet and pawl one-way transmission assembly to achieve coordinated insertion of the wire harness and heat shrinking heating. During insertion, the heating element is driven to deflect and store force synchronously. During resetting, the one-way structure avoids the torsion spring's reverse force storage from canceling out the force. When the wire harness is fully inserted, the torsion spring releases its stored force, causing the heating element to reciprocate along the outer circumference of the heat shrink tube, increasing the heating area and effectively reducing problems such as uneven shrinkage, wrinkles, and bubbles caused by fixed heating. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the installation positions of the support roller and the lower pressure roller in this invention; Figure 3 This is a schematic diagram showing the installation position of the heat shrink sleeve and the arc-shaped support base in this invention; Figure 4 This is a schematic diagram showing the connection relationship between the lifting gear, the fixed rack, and the lifting rack in this invention; Figure 5 This is an exploded view showing the connection relationship between the electric heating element, the arc-shaped support base, and the transmission disc in this invention. Figure 6 This is a schematic diagram showing the installation positions of the three-jaw clamp, the U-shaped clamp, and the arc-shaped support in this invention; Figure 7 This is a three-dimensional structural diagram of the positioning component in this invention; Figure 8 This is a three-dimensional structural diagram of the feeding component in this invention.

[0019] The attached diagram is labeled as follows: 1. Frame; 2. Heat shrink sleeve; 3. Right-angle shaping plate; 4. U-shaped gripper; 5. Electric heating element; 6. Transmission rod one; 7. Lower pressure roller; 8. Tension spring; 9. Support roller; 10. Feeding motor; 11. Support sleeve; 12. Electric push rod one; 13. Mounting plate; 14. Lifting slide rod; 15. Cutting blade; 16. Guide slide rod; 17. Sequencing spring; 18. Limiting ring; 19. Lifting slide groove; 20. Lifting rack; 21. Fixed rack; 22. Lifting gear; 23. Shaping guide rod; 24. Shaping spring; 25. Shaping contact rod; 26. Arc surface support; 27. Synchronous pulley; 28. Same 29. Stepping belt; 30. Transmission gear one; 31. Transmission gear two; 32. Transmission rack; 33. Electric push rod two; 34. Feed chute; 35. Conveyor belt; 36. U-shaped slide bar; 37. Helical rack; 38. Helical gear; 39. Three-jaw clamp; 40. Driven gear; 41. Reducer; 42. Drive gear; 43. Feed motor; 44. Arc-shaped support base; 45. Arc-shaped through slot; 46. U-shaped frame; 47. Through hole; 48. Transmission disc; 49. Eccentric column; 50. Energy storage torsion spring; 51. Energy storage gear; 52. Energy storage slide rail; 53. Energy storage rack; 54. Transmission inclined rail; 55. Feed rod; 56. Transmission insertion rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] An automatic processing device for connecting wire harnesses belongs to the field of precision automated processing equipment in the field of connecting wire harness processing technology. It is specifically used for anti-flattening, low-resistance insertion, and uniform heat shrinking collaborative operation during the heat shrink tubing assembly process of connecting wire harnesses. It also integrates process linkage-spiral feeding integrated linkage and unidirectional power storage-anti-reverse cancellation synchronous adaptation functions.

[0022] like Figures 1-8 As shown, it includes a frame 1 and a heat shrink tubing processing mechanism, a wire harness feeding mechanism and a feeding heat shrink mechanism integrated on the frame 1; The heat shrink tubing processing mechanism includes a cutting assembly, a feeding assembly, and a shaping transmission component. The shaping transmission component includes a heat shrink sleeve 2, a right-angle shaping plate 3 symmetrically arranged inside the heat shrink sleeve 2, and a driving component. The right-angle shaping plate 3 applies radial support force to the heat shrink tubing to maintain its circular shape. The wire harness feeding mechanism includes a U-shaped gripper 4 that carries the wire harness and a positioning component. The positioning component drives the U-shaped gripper 4 to move the wire harness so that the end of the wire harness is coaxially aligned with the heat shrink tubing at the feeding station. The feeding heat shrinking mechanism includes a feeding component, an electric heating element 5, and a transmission component. The feeding component includes a helical rack 36, a helical gear 37, and a drive source. The helical rack 36 and the helical gear 37 mesh to drive the wire harness to reciprocate along the axial direction of the heat shrink tube, while simultaneously driving the wire harness to rotate spirally around its own axis and insert into the heat shrink tube. The electric heating element 5 corresponds to the feeding station. One end of the transmission component is fixed to the feeding component, and the other end is connected to the electric heating element 5, so that the feeding component drives the electric heating element 5 to reciprocate along the outer periphery of the heat shrink tube. The cutting assembly includes a transmission rod 6 hinged to one end of the frame 1, a lower pressure roller 7 rotatably connected to the end of the transmission rod 6, a tension spring 8 fixedly connected to the middle section of the transmission rod 6, the other end of the tension spring 8 fixedly connected to the frame 1, and a support roller 9 rotatably connected to one end of the frame 1. The lower pressure roller 7 is always in contact with the support roller 9 through the tension spring 8. One end of the frame 1 is fixedly connected to a feeding motor 10. The output end of the feeding motor 10 is fixedly connected to the support roller 9. The feeding motor 10 drives the support roller 9 to rotate, which in turn feeds the heat shrink tubing with the pressure roller 7. A support sleeve 11 is fixedly connected to one end of the frame 1. The support sleeve 11 is located between the support roller 9 and the heat shrink sleeve 2 and is used to guide the heat shrink tube to enter the heat shrink sleeve 2 accurately. An electric push rod 12 is fixedly connected to the top of the frame 1. An installation plate 13 is fixedly connected to the output end of the electric push rod 12. A lifting slide rod 14 that is slidably connected to the frame 1 is symmetrically fixed to one end of the installation plate 13. A cutting blade 15 is provided at the bottom of the installation plate 13. The installation plate 13 is driven by the electric push rod 12 to drive the cutting blade 15 to rise and fall, thereby cutting the heat shrink tube. Furthermore, the feeding assembly includes a guide slide rod 16 symmetrically slidably disposed at one end of the frame 1. A sequence spring 17 is sleeved on the outer periphery of the guide slide rod 16. The sequence spring 17 is disposed between the top of the frame 1 and the end of the guide slide rod 16. The guide slide rod 16 is reset by the sequence spring 17. A limit ring 18 is provided in the middle section of the guide slide rod 16 to limit the rebound stroke of the sequence spring 17. One end of the frame 1 is provided with a lifting slide groove 19 along the axis of the lifting slide rod 14. A lifting rack 20 is slidably arranged inside the lifting slide groove 19. One end of the lifting rack 20 is fixedly connected to the cutting blade 15. One end of the frame 1 is fixedly connected to a fixed rack 21, and the bottom of the mounting plate 13 is rotatably connected to a lifting gear 22, which meshes synchronously with the fixed rack 21 and the lifting rack 20. When the mounting plate 13 is raised or lowered, the lifting gear 22 rolls along the fixed rack 21, which drives the lifting rack 20 to drive the cutting blade 15 to slide back and forth, realizing automatic cutting and feeding of heat shrink tubing; Furthermore, the driving components of the shaping transmission are the shaping guide rod 23, the shaping spring 24, and the shaping abutment rod 25; The shaping guide rod 23 is symmetrically fixedly connected to the bottom of a right-angle shaping plate 3. The bottom of the shaping guide rod 23 passes through the heat shrink sleeve 2 and extends downward. A shaping spring 24 is sleeved on the outer periphery. The shaping spring 24 is located between the bottom of the heat shrink sleeve 2 and the lower end of the shaping guide rod 23. A pair of shaping abutment rods 25 are fixedly connected to one end of the frame 1. The two shaping abutment rods 25 are symmetrically arranged on both sides of the electric heating element 5, and the top of the shaping abutment rod 25 corresponds to the lower end of the shaping guide rod 23. When the heat shrink tubing is fed to the target position, the lower end of the shaping guide rod 23 contacts the top of the shaping abutment rod 25, pushing the shaping guide rod 23 upward and causing the right-angle shaping plate 3 to move closer to the heat shrink tubing, thereby achieving the shaping of the heat shrink tubing; Furthermore, the positioning component includes an arc-shaped support 26 hinged to one end of the frame 1, corresponding to the loading station, used to support the end of the connecting wire harness. A feeding trough 33 is provided in the middle section of the frame 1, and a conveyor belt 34 is provided inside the feeding trough 33. The conveyor belt 34 is located below the arc-shaped support 26 and the U-shaped gripper 4, used to transport the processed wire harness. Furthermore, the positioning assembly also includes a pair of synchronous pulleys 27 rotatably connected to one end of the frame 1. A synchronous belt 28 is fitted around the outer periphery of the two synchronous pulleys 27. One synchronous pulley 27 is coaxially fixed with the U-shaped gripper 4, and the other synchronous pulley 27 is coaxially fixedly connected with a transmission gear 29. The arc-shaped support 26 is coaxially fixedly connected to the transmission gear 30. The transmission gear 29 and the transmission gear 30 are synchronously meshed with the transmission rack 31. One end of the frame 1 is fixedly connected to the electric push rod 32. The output end of the electric push rod 32 is fixedly connected to the transmission rack 31. The electric push rod 32 drives the transmission rack 31 to move, which drives the transmission gear 29 and the synchronous wheel 27 to rotate, so that the U-shaped gripper 4 and the arc-shaped support 26 move synchronously to complete the loading and unloading of the wire harness. Furthermore, the feeding assembly includes a U-shaped slide bar 35, a helical rack 36, a helical gear 37, and a three-jaw clamp 38; U-shaped slide bar 35 is slidably disposed at one end of frame 1 and can move along the axial direction of heat shrink tubing. A helical gear 36 is rotatably connected to the middle section of U-shaped slide bar 35, and a helical gear 37 is symmetrically rotatably connected to one end of frame 1. The helical gear 36 and the two helical gears 37 mesh synchronously. One end of the helical gear 36 passes through the U-shaped slide bar 35 and is fixedly connected to a three-jaw clamp 38. The three-jaw clamp 38 is used to clamp the connecting wire harness. The rotation of the helical gear 36 drives the wire harness to rotate around its own axis. Furthermore, the drive source for the feed assembly includes a driven gear 39, a reducer 40, a drive gear 41, and a feed motor 42; Driven gear 39 is fixedly connected to the bottom of helical gear 37. Reducer 40 is fixedly connected to the bottom of frame 1. The output end of reducer 40 passes through frame 1 and is fixedly connected to drive gear 41 that meshes synchronously with the two driven gears 39. The input end of the reducer 40 is fixedly connected to the feed motor 42. The feed motor 42 drives the drive gear 41 to rotate, which in turn drives the driven gear 39, the helical gear 37, and the helical rack 36 to move in tandem, so as to realize the synchronous axial feeding and rotation of the wire harness. Furthermore, the transmission assembly includes an arc-shaped support base 43, a U-shaped frame 45, a transmission disc 47, an eccentric column 48, and a storage torsion spring 49. The arc-shaped support base 43 is fixedly connected to one end of the frame 1. The top is symmetrically provided with arc-shaped through grooves 44. The trajectory of the arc-shaped through grooves 44 is adapted to the outer contour of the electric heating element 5. The bottom of the electric heating element 5 is fixedly connected with a U-shaped frame 45. The bottom of the U-shaped frame 45 passes through the arc-shaped through grooves 44 and is provided with through holes 46. One end of the frame 1 is rotatably connected to a transmission disk 47. An eccentric column 48 is eccentrically provided on the top of the transmission disk 47. The eccentric column 48 passes through the through hole 46. A storage torsion spring 49 is provided at one end of the frame 1. A one-way transmission assembly is provided between the transmission disc 47 and the energy storage gear 50. The one-way transmission assembly includes a ratchet wheel fixed to the shaft end of the transmission disc 47, a pawl hinged to the frame 1, and an elastic element. The elastic element drives the pawl to fit against the tooth surface of the ratchet wheel. One end of the energy storage torsion spring 49 is fixed to the ratchet wheel, and the other end is fixed to the frame 1. Furthermore, the transmission assembly also includes a power storage gear 50, a power storage rack 52, a transmission inclined rail 53, a feed rod 54, and a transmission insert rod 55; The energy storage gear 50 is fixedly connected to the shaft end of the transmission disc 47. One end of the frame 1 is provided with an energy storage slide rail 51, and the top of the energy storage slide rail 51 is slidably provided with an energy storage rack 52 that meshes with the energy storage gear 50. One end of the power storage rack 52 is fixedly connected to the transmission inclined rail 53, one end of the U-shaped slide bar 35 is fixedly connected to the feed rod 54, and the bottom of the feed rod 54 is fixedly connected to the transmission insert rod 55, which extends into the interior of the transmission inclined rail 53. When the U-shaped slide bar 35 moves axially, the transmission rod 55 slides along the transmission inclined rail 53, which drives the transmission inclined rail 53 and the energy storage rack 52 to move, and drives the energy storage gear 50 and the transmission disc 47 to rotate, thereby realizing the linkage between the feeding component and the electric heating element 5.

[0023] When in use, the heat shrink tubing processing flow is first entered: the feeding motor 10 drives the support roller 9 to rotate, and the pressure roller 7, which is pre-tightened by the tension spring 8, forms a clamping force to guide the heat shrink tubing along the support sleeve 11 to the preset length, and then the feeding motor 10 stops. Then the electric actuator 12 is activated, pushing the mounting plate 13 to drive the lifting gear 22 to roll along the fixed rack 21. Because the lifting gear 22 simultaneously meshes with the lifting rack 20, it drives the cutting blade 15 to move down with double the stroke, arriving below the loading station before the heat shrink sleeve 2 to form a height difference and accurately cut the heat shrink tube. After the cutting is completed, the mounting plate 13 continues to move down to abut against the heat shrink sleeve 2, pushing it down along the guide slide rod 16 to the loading station. At the same time, the guide slide rod 16 squeezes the sequence spring 17 to store force, so that the heat shrink tube is coaxially aligned with the loading station. At this time, the heat shrink tubing triggers the shaping transmission component to move. The lower end of the shaping guide rod 23 abuts against the shaping contact rod 25, overcoming the elastic force of the shaping spring 24 and moving upward. This causes the right-angle shaping plate 3 to move closer to the axis of the heat shrink tubing, pushing the shaping guide rod 23 to move upward against the elastic force of the shaping spring 24. Since the shaping guide rod 23 is fixedly connected to one right-angle shaping plate 3, it simultaneously moves the right-angle shaping plate 3 closer to the other right-angle shaping plate 3, causing the right-angle shaping plate 3 to gradually approach the axis of the heat shrink tubing. The two symmetrically arranged right-angle shaping plates 3 jointly apply radial support force, causing the outer periphery of the heat shrink tubing to form a squeezing contact with the inner four sides of the two right-angle shaping plates 3. This ensures that the heat shrink tubing always maintains a circular shape, preventing flattening from affecting the subsequent insertion of the wire harness. After the heat shrink tubing is shaped, the wire harness feeding mechanism is started: the robot arm puts the wire harness into the U-shaped gripper 4, the electric push rod 32 drives the transmission rack 31 to move, and the transmission gear 29 and transmission gear 30 rotate synchronously. Transmission gear 29 drives the U-shaped gripper 4 to rotate 90° via synchronous pulley 27 and synchronous belt 28. Transmission gear 30 drives the arc support 26 to flip, so that the U-shaped gripper 4 transfers the end of the wire harness to the three-jaw gripper 38. After keeping it coaxially aligned with the heat shrink tubing, the three-jaw gripper 38 clamps the wire harness, the U-shaped gripper 4 is released, and the arc support 26 lifts the end of the wire harness connected to the terminal to prevent it from sagging or shifting. Then the heat shrinking mechanism is started: the feed motor 42 drives the drive gear 41 to rotate via the reducer 40, and the driven gears 39 on both sides drive the spiral gear 37 to rotate. The spiral gear 37 meshes with the spiral rack 36, converting the rotational motion into a compound motion of axial movement and rotation. The three-jaw clamp 38 clamps the wire harness and pushes it along the axial direction of the heat shrink tube at a uniform speed, while rotating spirally around its own axis, so that the end of the wire harness connected to the terminal is smoothly inserted into the heat shrink tube, reducing insertion resistance and ensuring a tight fit. During the wire harness feeding process, the U-shaped slide bar 35 moves axially synchronously, driving the feed rod 54 and the transmission insertion rod 55 to embed into the inclined groove of the transmission inclined rail 53, converting the axial movement into the lateral sliding of the energy storage rack 52. The energy storage rack 52 meshes with the energy storage gear 50 to drive the transmission disk 47 to rotate, which drives the electric heating element 5 to reciprocate along the arc-shaped through groove 44 through the eccentric column 48. At this time, the ratchet and pawl structure between the transmission disc 47 and the energy storage gear 50 comes into play. When the energy storage gear 50 rotates in the forward direction, the pawl gets into the ratchet tooth groove, causing it to rotate synchronously and torsion the energy storage torsion spring 49 to store energy. When the wire harness and terminal connection end are fully inserted into the heat shrink sleeve 2, the power storage rack 52 and power storage gear 50 disengage, the power storage torsion spring 49 releases the stored power, and drives the U-shaped frame 45 and the electric heating element 5 to quickly reciprocate along the arc-shaped through groove 44 of the arc-shaped support 43. At this time, the electric heating element 5 continues to heat up, and expands the heating coverage area of ​​the outer periphery of the heat shrink tube through reciprocating deflection, so as to achieve uniform heating of the heat shrink sleeve 2 and the wire harness, so that the heat shrink tube fully shrinks and tightly wraps the wire harness. After heat shrinking is completed, each component is reset in sequence: the reverse start electric push rod 12 drives the cutting blade 15 and the mounting plate 13 to reset, the sequence spring 17 rebounds and pushes the guide slide rod 16 and the heat shrink sleeve 2 to reset, and the limit ring 18 limits the rebound stroke to ensure that the heat shrink sleeve 2 and the support sleeve 11 are coaxial. When the feed motor 42 reverses, it drives the helical rack 36 and the three-jaw clamp 38 to reset. The U-shaped slide bar 35 drives the transmission rod 55 to slide in the opposite direction, so that the energy storage rack 52 re-meets the energy storage gear 50. At this time, the energy storage gear 50 rotates in the opposite direction, and the pawl slides and disengages along the smooth surface of the thorn wheel. The thorn wheel and the energy storage torsion spring 49 are stationary and do not store energy in the opposite direction. The electric heating element 5 and the right-angle shaping plate 3 are reset under the action of the torsion spring release and the shaping spring 24, respectively. Finally, the three-jaw clamp 38 releases the wire harness, the electric push rod 32 retracts to drive the transmission rack 31 to move in the opposite direction, causing the U-shaped jaw 4 and the arc-shaped support 26 to reset. The processed wire harness falls into the conveyor belt 34 in the feeding trough 33 and is transported to the next process, completing a single processing cycle.

[0024] The working principle of the automatic processing device for connecting wire harnesses provided by this invention is as follows: First, start the feeding motor 10 to drive the support roller 9 to rotate. Together with the pressure roller 7 under the pre-tightening force of the tension spring 8, a stable clamping and conveying force is formed, and the heat shrink tube is conveyed along the guide direction of the support sleeve 11 to the heat shrink sleeve 2 side to the preset processing length, in preparation for the subsequent cutting process. Subsequently, the electric actuator 12 is activated, which pushes the mounting plate 13 to synchronously drive the lifting gear 22 to roll along the fixed rack 21. Since the lifting gear 22, the lifting rack 20, and the fixed rack 21 maintain synchronous meshing, the lifting rack 20 and the fixedly connected cutting blade 15 are driven to descend synchronously with double the stroke of the lifting gear 22. This causes the cutting blade 15 to move down to the lower part of the loading station before the heat shrink sleeve 2, so that a height difference is quickly formed between the loading station and the heat shrink sleeve 2. Through the precise lifting and lowering action of the cutting blade 15, the cutting operation of the heat shrink tube is completed. During the cutting process, as the cutting blade 15 completes the cutting of the heat shrink tubing, the electric push rod 12 simultaneously drives the mounting plate 13 to abut against the top of the heat shrink sleeve 2 along the guide direction of the guide slide rod 16, and pushes the heat shrink sleeve 2 down to the loading station along the guide direction of the guide slide rod 16. At the same time, the mounting plate 13 pushes the heat shrink sleeve 2 to move the guide slide rod 16 down, causing the guide slide rod 16 to compress the sequence spring 17 to produce a contraction deformation. The sequence spring 17 simultaneously completes the storage of force. At this time, the heat shrink sleeve 2 drives the cut heat shrink tubing to be precisely coaxially aligned with the loading station. When the heat shrink tubing reaches the target station, the lower end of the shaping guide rod 23 abuts against the shaping contact rod 25, pushing the shaping guide rod 23 to move upward against the elastic force of the shaping spring 24. Since the shaping guide rod 23 is fixedly connected to a right-angle shaping plate 3, it simultaneously drives the right-angle shaping plate 3 to move closer to the other right-angle shaping plate 3, so that the right-angle shaping plate 3 gradually approaches the axis of the heat shrink tubing. The two symmetrically arranged right-angle shaping plates 3 jointly apply radial support force to ensure that the heat shrink tubing always maintains a circular shape and avoids the subsequent wire harness insertion due to flattening. Next, the robotic arm places the connecting wire harness into the U-shaped gripper 4, and activates the electric actuator 32 to drive the transmission rack 31 to move laterally. At the same time, the transmission gear 29 and the transmission gear 30 mesh and rotate synchronously. The transmission gear 29 is linked with the synchronous belt 28 through the synchronous pulley 27, which drives the U-shaped gripper 4 to rotate 90° around the shaft end. The transmission gear 30 drives the arc surface support 26 to rotate synchronously and adjust the angle so that the U-shaped gripper 4 is coaxially aligned with the heat shrink tube in the heat shrink sleeve 2. Subsequently, the U-shaped jaw 4 clamps the end of the wire harness and transfers it to the clamping end of the three-jaw clamp 38, maintaining a coaxial state with the heat shrink tubing inside the heat shrink sleeve 2. Then, the three-jaw clamp 38 is controlled to complete the stable clamping of one end of the wire harness, while the U-shaped jaw 4 releases the clamping of the wire harness. At this time, the other end of the wire harness is placed inside the arc-shaped support 26. The arc-shaped support 26 initially supports the end of the wire harness connected to the terminal, effectively preventing the wire harness from shifting due to drooping. Afterwards, the feed motor 42 starts, and after being reduced in speed by the reducer 40, it drives the drive gear 41 to rotate. The drive gear 41 meshes and drives the driven gears 39 on both sides to rotate synchronously. The driven gears 39 are coaxially fixed with the helical gear 37, which in turn drives the helical gear 37 to rotate. The helical gear 37 meshes with the helical rack 36, converting the rotational motion into a composite motion of axial movement and rotation. At this time, the three-jaw clamp 38 firmly holds the wire harness and, driven by the helical gear 36, advances at a constant speed along the axis of the heat shrink tubing. At the same time, it rotates around its own axis, so that the end of the wire harness connected to the terminal is smoothly inserted into the heat shrink tubing, which reduces the insertion resistance and ensures that the wire harness fits tightly against the inner wall of the heat shrink tubing. During the wire harness feeding process, the U-shaped slide bar 35 moves axially synchronously with the helical rack 36, which drives the feed rod 54 and the transmission rod 55 at the bottom to move synchronously. The transmission rod 55 is embedded in the inclined groove of the transmission inclined rail 53, which converts the axial movement into the lateral movement of the transmission inclined rail 53, thereby driving the energy storage rack 52 to slide smoothly along the energy storage slide rail 51. At this time, the power storage rack 52 and the power storage gear 50 mesh with each other, driving the transmission disk 47 to rotate. The eccentric column 48 at the top of the transmission disk 47 slides along the through hole 46 of the U-shaped frame 45, causing the U-shaped frame 45 and the electric heating element 5 to reciprocate along the arc-shaped through groove 44 of the arc-shaped support seat 43. Since a ratchet and pawl one-way transmission structure is provided between the transmission disc 47 and the power storage gear 50, when the power storage gear 50 rotates in the forward direction, the pawl gets into the tooth groove of the thorn wheel, causing the thorn wheel to rotate synchronously with the transmission disc 47. At the same time, the thorn wheel rotates to stretch and twist the power storage torsion spring 49, completing the power storage action. Since the meshing length of the teeth of the power storage rack 52 is preset to a fixed value, when the wire harness and the terminal connection end are fully inserted into the heat shrink sleeve 2 according to the preset length, the meshing relationship between the power storage rack 52 and the power storage gear 50 terminates and disengages. The power storage torsion spring 49 releases the previously stored power, which drives the U-shaped frame 45 and the electric heating element 5 to quickly reciprocate along the arc-shaped through groove 44 of the arc-shaped support 43. At this time, the electric heating element 5 continues to heat up, and expands the heating coverage area of ​​the heat shrink tube through reciprocating deflection, so as to achieve uniform heating of the heat shrink sleeve 2 and the wire harness, and make the heat shrink tube fully shrink and tightly wrap the wire harness. After processing, the electric actuator 12 is reversed, which drives the lifting gear 22 to roll in the opposite direction. This drives the lifting rack 20 and the fixedly connected cutting blade 15 to move upward synchronously with double the stroke of the lifting gear 22, so that the cutting blade 15 resets one step before the heat shrink sleeve 2. At the same time, as the mounting plate 13 resets in the opposite direction, the sequence spring 17 releases its previous stored stroke, generates a rebound deformation, pushes the guide slide rod 16 to reset the heat shrink sleeve 2, and the limit ring 18 limits the rebound stroke of the sequence spring 17 to ensure that the heat shrink sleeve 2 is precisely coaxially aligned with the support sleeve 11 after reset. After the heat shrinking process is completed, the feed motor 42 reverses, driving the helical rack 36 and the three-jaw clamp 38 to move in the opposite direction and reset. At the same time, the U-shaped slide bar 35 drives the transmission rod 55 to slide in the opposite direction, driving the energy storage rack 52 to re-mesh with the energy storage gear 50. When the energy storage gear 50 rotates in the opposite direction, its tooth surface pushes the smooth surface of the pawl. The pawl swings around the hinge point and disengages from the thorn wheel tooth groove. The thorn wheel and the energy storage torsion spring 49 do not rotate in the opposite direction with the energy storage gear 50. Only the energy storage gear 50 rotates idly, and the energy storage torsion spring 49 does not store energy in the opposite direction. At the same time, the U-shaped slide bar 35 drives the three-jaw clamp 38 to fully reset, the electric heating element 5 returns to its initial position after the storage torsion spring 49 is released, the shaping guide rod 23 resets under the action of the shaping spring 24, and the right-angle shaping plate 3 simultaneously loosens the heat shrink tube and returns to its initial state, waiting for the next processing cycle; Finally, the control three-jaw clamp 38 releases the clamp on the processed wire harness, the electric push rod 32 retracts, drives the transmission rack 31 to move in the opposite direction, drives the U-shaped jaw 4 to rotate around the hinge axis and reset, and at the same time drives the arc surface support 26 to flip and reset. During the flipping process of the arc surface support 26, the processed wire harness falls into the conveyor belt 34 in the feeding trough 33, and the conveyor belt 34 transports the finished wire harness to the next process, completing a single processing cycle.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An automatic processing device for connecting wire harnesses, characterized in that: Includes a frame (1) and a heat shrink tubing processing mechanism, a wire harness feeding mechanism and a feeding heat shrink mechanism integrated on the frame (1); The heat shrink tubing processing mechanism includes a cutting component, a feeding component, and a shaping transmission component. The shaping transmission component includes a heat shrink sleeve (2), a right-angle shaping plate (3) symmetrically arranged inside the heat shrink sleeve (2), and a driving component. The right-angle shaping plate (3) applies radial support force to the heat shrink tubing to maintain its circular shape. The wire harness feeding mechanism includes a U-shaped gripper (4) for carrying the wire harness and a positioning component. The positioning component drives the U-shaped gripper (4) to move the wire harness so that the end of the wire harness is coaxially aligned with the heat shrink tube of the feeding station. The feeding heat shrinking mechanism includes a feeding component, an electric heating element (5) and a transmission component. The feeding component includes a helical rack (36), a helical gear (37) and a drive source. The helical rack (36) and the helical gear (37) mesh to drive the wire harness to move back and forth along the axial direction of the heat shrink tube, while driving the wire harness to rotate around its own axis and insert into the heat shrink tube. The electric heating element (5) corresponds to the feeding station. One end of the transmission component is fixed to the feeding component, and the other end is connected to the electric heating element (5), so that the feeding component drives the electric heating element (5) to reciprocate along the outer periphery of the heat shrink tube.

2. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The cutting assembly includes a transmission rod (6) hinged to one end of the frame (1), a lower pressure roller (7) rotatably connected to the end of the transmission rod (6), a tension spring (8) fixedly connected to the middle section of the transmission rod (6), the other end of the tension spring (8) fixedly connected to the frame (1), a support roller (9) rotatably connected to one end of the frame (1), and the lower pressure roller (7) always abuts against the support roller (9) through the tension spring (8). A feeding motor (10) is fixedly connected to one end of the frame (1), and the output end of the feeding motor (10) is fixedly connected to the support roller (9). One end of the frame (1) is fixedly connected to a support sleeve (11), which is located between the support roller (9) and the heat shrink sleeve (2). The top of the frame (1) is fixedly connected to an electric push rod (12), and the output end of the electric push rod (12) is fixedly connected to a mounting plate (13). One end of the mounting plate (13) is symmetrically fixedly connected to a lifting slide rod (14) that is slidably connected to the frame (1). A cutting blade (15) is provided at the bottom of the mounting plate (13).

3. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The feeding assembly includes a guide slide rod (16) symmetrically slidably disposed at one end of the frame (1). A sequence spring (17) is sleeved on the outer periphery of the guide slide rod (16). The sequence spring (17) is disposed between the top of the frame (1) and the end of the guide slide rod (16). A limit ring (18) is provided in the middle section of the guide slide rod (16). The frame (1) is provided with a lifting slide groove (19) along the axial direction of the lifting slide rod (14) at one end. A lifting rack (20) is slidably provided inside the lifting slide groove (19). One end of the lifting rack (20) is fixedly connected to the cutting blade (15). One end of the frame (1) is fixedly connected to a rack (21), and the bottom of the mounting plate (13) is rotatably connected to a lifting gear (22). The lifting gear (22) meshes synchronously with the rack (21) and the rack (20).

4. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The driving components of the shaping transmission component are a shaping guide rod (23), a shaping spring (24), and a shaping abutment rod (25). The shaping guide rod (23) is symmetrically fixedly connected to the bottom of a right-angle shaping plate (3). The bottom of the shaping guide rod (23) passes through the heat shrink sleeve (2) and extends downward. A shaping spring (24) is sleeved on the outer periphery. The shaping spring (24) is located between the bottom of the heat shrink sleeve (2) and the lower end of the shaping guide rod (23). A pair of shaping abutment rods (25) are fixedly connected to one end of the frame (1). The two shaping abutment rods (25) are symmetrically arranged on both sides of the electric heating element (5), and the top of the shaping abutment rod (25) corresponds to the lower end of the shaping guide rod (23).

5. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The positioning component includes an arc-shaped support (26) hinged to one end of the frame (1), corresponding to the loading station. A feeding trough (33) is provided in the middle section of the frame (1), and a conveyor belt (34) is provided inside the feeding trough (33). The conveyor belt (34) is located below the arc-shaped support (26) and the U-shaped gripper (4).

6. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The positioning assembly also includes a pair of synchronous pulleys (27) rotatably connected to one end of the frame (1). The outer periphery of the two synchronous pulleys (27) is fitted with a synchronous belt (28). One synchronous pulley (27) is coaxially fixed with the U-shaped gripper (4), and the other synchronous pulley (27) is coaxially fixedly connected with a transmission gear (29). The arc-shaped support (26) is coaxially fixedly connected to the transmission gear two (30). The transmission gear one (29) and the transmission gear two (30) are synchronously meshed with the transmission rack (31). One end of the frame (1) is fixedly connected to the electric push rod two (32). The output end of the electric push rod two (32) is fixedly connected to the transmission rack (31). The electric push rod two (32) drives the transmission rack (31) to move, which drives the transmission gear one (29) and the synchronous wheel (27) to rotate, so as to realize the synchronous action of the U-shaped gripper (4) and the arc-shaped support (26) to complete the loading and unloading of the wire harness.

7. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The feeding assembly includes a U-shaped slide bar (35), a helical rack (36), a helical gear (37), and a three-jaw clamp (38). The U-shaped slide bar (35) is slidably disposed at one end of the frame (1) and can move along the axial direction of the heat shrink tubing. The middle section of the U-shaped slide bar (35) is rotatably connected to a helical gear (36), and one end of the frame (1) is symmetrically rotatably connected to a helical gear (37). The helical gear (36) meshes synchronously with the two helical gears (37). One end of the helical gear (36) passes through the U-shaped slide bar (35) and is fixedly connected to a three-jaw clamp (38). The three-jaw clamp (38) is used to clamp the connecting wire harness. The rotation of the helical gear (36) drives the wire harness to rotate around its own axis.

8. The automatic processing device for connecting wire harnesses according to claim 7, characterized in that: The driving source of the feed assembly includes a driven gear (39), a reducer (40), a driving gear (41), and a feed motor (42). The driven gear (39) is fixedly connected to the bottom of the helical gear (37). A reducer (40) is fixedly connected to the bottom of the frame (1). The output end of the reducer (40) passes through the frame (1) and is fixedly connected to the drive gear (41) that meshes synchronously with the two driven gears (39). The input end of the reducer (40) is fixedly connected to the feed motor (42).

9. The automatic processing device for connecting wire harnesses according to claim 1, characterized in that: The transmission assembly includes an arc-shaped support base (43), a U-shaped frame (45), a transmission disc (47), an eccentric column (48), and a torsion spring (49). The arc-shaped support base (43) is fixedly connected to one end of the frame (1), and the top is symmetrically provided with arc-shaped through grooves (44). The trajectory of the arc-shaped through grooves (44) is adapted to the outer periphery of the electric heating element (5). The bottom of the electric heating element (5) is fixedly connected with a U-shaped frame (45). The bottom of the U-shaped frame (45) passes through the arc-shaped through grooves (44) and is provided with through holes (46). One end of the frame (1) is rotatably connected to a transmission disk (47), and an eccentric column (48) is eccentrically provided on the top of the transmission disk (47). The eccentric column (48) passes through the through hole (46), and a storage torsion spring (49) is provided on one end of the frame (1). A one-way transmission assembly is provided between the transmission disk (47) and the power storage gear (50). The one-way transmission assembly includes a ratchet wheel fixed to the shaft end of the transmission disk (47), a pawl hinged to the frame (1), and an elastic element. The elastic element drives the pawl to fit against the tooth surface of the ratchet wheel. One end of the power storage torsion spring (49) is fixed to the ratchet wheel, and the other end is fixed to the frame (1).

10. The automatic processing device for connecting wire harnesses according to claim 9, characterized in that: The transmission assembly also includes a power storage gear (50), a power storage rack (52), a transmission inclined rail (53), a feed rod (54), and a transmission insert rod (55). The power storage gear (50) is fixedly connected to the shaft end of the transmission disc (47). One end of the frame (1) is provided with a power storage slide rail (51), and the top of the power storage slide rail (51) is slidably provided with a power storage rack (52) that meshes with the power storage gear (50). One end of the power storage rack (52) is fixedly connected to the transmission inclined rail (53), and one end of the U-shaped slide bar (35) is fixedly connected to the feed rod (54). The bottom of the feed rod (54) is fixedly connected to the transmission insert rod (55), and the transmission insert rod (55) extends into the interior of the transmission inclined rail (53).

Images