Shaping and sleeving device for heat shrink tube

Abstract

The utility model provides a shaping sleeving device for a heat shrink tube. The shaping sleeving device for the heat shrink tube comprises a rack; the pipe expanding assembly is arranged on the rack, the pipe expanding assembly comprises a pipe expanding part and a limiting part, the limiting part is constructed to be used for preventing the flat heat shrink pipe from rotating, and the pipe expanding part is provided with a pipe expanding channel used for expanding the heat shrink pipe; the shaping assembly comprises at least one shaping roller set, each shaping roller set comprises two shaping rollers arranged in the first direction in a spaced mode, each shaping roller is rotatably arranged on the rack, a shaping channel is formed by the interval between the two shaping rollers, and the heat shrink tube is expanded through the tube expanding channel and then conveyed to the shaping assembly to be shaped. According to the technical scheme of the utility model, the problems of low shaping efficiency and poorer shaping effect of the heat shrink tube in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrink tube shaping, in particular to a heat shrink tube shaping set device. Background Art

[0002] Heat shrink tubing is a specialized plastic tubing typically made from a polymer material such as polyolefin, PVC (polyvinyl chloride), PET (polyethylene terephthalate), fluororubber, or silicone. It's primarily used for insulating wiring harnesses, solder joints, and inductors. During production, most wiring harnesses require heat shrink tubing to be applied to the ends for insulation and waterproofing. Flat heat shrink tubing requires shaping before application.

[0003] Existing tubing equipment cannot directly perform this task. Typically, the process involves cutting the heat shrink tubing, manually rounding the cut tubing, and then manually fitting the rounded tubing onto the wiring harness. However, this manual rounding method can lead to low tubing shaping efficiency and poor results, resulting in poor tubing shaping consistency and increased rejection rates in the subsequent automated marking and heat shrinking process. Utility Model Content

[0004] The main purpose of the utility model is to provide a heat shrink tube shaping package device to solve the problems of low heat shrink tube shaping efficiency and poor effect in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a shaping suit device for heat shrinkable tubes, which includes: a frame; a tube expansion assembly, which is arranged on the frame, the tube expansion assembly includes a tube expansion part and a limiting part, the limiting part is constructed to prevent the flat heat shrinkable tube from rotating, and the tube expansion part has an expansion channel for expanding the heat shrinkable tube; a shaping assembly, which includes at least one shaping roller group, the shaping roller group includes two shaping rollers arranged at intervals along a first direction, each shaping roller is rotatably arranged on the frame, and the interval between the two shaping rollers forms a shaping channel. After the heat shrinkable tube is expanded through the tube expansion channel, it is transported to the shaping assembly for shaping.

[0006] Furthermore, the pipe expanding portion includes two pipe expanding rollers spaced apart along the first direction, each pipe expanding roller is rotatably disposed on the frame, and the interval between the two pipe expanding rollers forms a pipe expanding channel.

[0007] Furthermore, each tube expanding roller is provided with a groove arranged along the circumference of the tube expanding roller, and the groove forms a limiting portion.

[0008] Furthermore, there are at least two tube expanding parts, and the at least two tube expanding parts are arranged in sequence along the conveying direction of the heat shrink tube.

[0009] Furthermore, the shaping assembly also includes a positioning guide member arranged on the frame, the positioning guide member has a guide through hole, and the positioning guide member is located between the pipe expansion assembly and the shaping roller group.

[0010] Furthermore, the cross section of the guide through hole is elliptical, the major axis of the ellipse extends along the first direction, and the cross section of the guide through hole is arranged perpendicular to the conveying direction.

[0011] Furthermore, the shaping assembly also includes a supporting guide member arranged on the frame, the supporting guide member has a supporting through hole, and the supporting guide member is located on the side of the shaping roller group away from the positioning guide member.

[0012] Furthermore, the cross section of the supporting through hole is circular, and the cross section of the supporting through hole is arranged perpendicular to the conveying direction.

[0013] Furthermore, the shaping kit for heat shrink tubes also includes a shaping component arranged on the frame, the shaping component is located on the side of the shaping roller group away from the tube expansion assembly, at least part of the shaping component is a columnar structure, and the cross-section of the shaping component is circular to reshape the heat shrink tube, and the cross-section of the shaping component is arranged perpendicular to the conveying direction.

[0014] Furthermore, the shaping component includes a guide column and a full cylinder connected in sequence. The guide column is located between the full cylinder and the shaping roller group. Along the conveying direction of the heat shrink tube, the cross-section of the guide column gradually increases, and the cross-section of the guide column is set perpendicular to the conveying direction.

[0015] Furthermore, the shaping component is movably arranged along the conveying direction of the heat shrinkable tube; the shaping kit for the heat shrinkable tube also includes a cutting assembly located between the shaping component and the shaping roller group, and the cutting assembly includes a cutting knife, which is movably arranged relative to the frame along a second direction set at an angle to the conveying direction.

[0016] Furthermore, the shaping kit device for the heat shrink tube also includes: a fixing component, located on the side of the shaping component away from the shaping roller group, the fixing component has a clamping cavity that can be opened and closed, and the clamping cavity can clamp the wire harness; a material moving component, located between the fixing component and the shaping roller group, the material moving component includes a clamping part, the clamping part has a clamping cavity that can be opened and closed, and the clamping part is movably arranged relative to the frame along the conveying direction and the first direction of the heat shrink tube.

[0017] By applying the technical solution of the present invention, a flat heat shrink tube can be limited by setting a limiting portion, so that the heat shrink tube can enter the tube expansion channel in a vertical state for tube expansion, and the flat heat shrink tube has a tendency to expand into a circular shape, thereby pre-shaping the flat heat shrink tube. After the pre-shaping of the heat shrink tube is completed, the two shaping rollers of the shaping roller group will squeeze the upper and lower surfaces of the heat shrink tube to expand the heat shrink tube, thereby achieving the effect of secondary shaping of the heat shrink tube. In this way, not only can the manual shaping of the heat shrink tube be eliminated, but the shaping efficiency of the heat shrink tube can also be improved, thereby improving the consistency of the shaping of the heat shrink tube, and further reducing the defective rate of the subsequent marking heat shrink process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic structural diagram of an embodiment of a heat shrink tubing shaping device according to the present invention is shown;

[0020] Figure 2 Shown Figure 1 A schematic structural diagram of a heat shrink tubing shaping set device at one angle;

[0021] Figure 3 Shown Figure 1 A schematic structural diagram of a heat shrink tubing shaping set device from another angle;

[0022] Figure 4 Shown Figure 1 Front view of the heat shrink tubing shaping kit.

[0023] The above drawings include the following reference numerals:

[0024] 1. Heat shrink tubing; 2. Wire harness; 10. Frame; 21. Tube expansion unit; 22. Positioning unit; 30. Shaping roller assembly; 31. Shaping roller; 41. Positioning guide; 42. Support guide; 43. Guide hole; 50. Shaping component; 51. Guide post; 52. Full cylinder; 60. Cutting assembly; 71. Fixing assembly; 72. Material transfer assembly; 73. Clamping unit; Z, first direction; X, conveying direction; Y, second direction. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, in the embodiment of the present invention, the first direction Z is Figure 1 The Z axis is the extension direction, the conveying direction X is the extension direction of the X axis, and the second direction Y is the extension direction of the Y axis. Figure 1 As shown, the first direction Z, the conveying direction X and the second direction Y are arranged perpendicularly in pairs.

[0027] like Figures 1 to 3 As shown, an embodiment of the present invention provides a heat shrink tubing shaping device. The heat shrink tubing shaping device comprises: a frame 10; a tube expansion assembly disposed on the frame 10, the tube expansion assembly comprising an expansion portion 21 and a stop portion 22, the stop portion 22 being configured to prevent the flat heat shrink tubing 1 from rotating; the tube expansion portion 21 having an expansion channel for expanding the heat shrink tubing 1; and a shaping assembly comprising at least one shaping roller assembly 30, the shaping roller assembly 30 comprising two shaping rollers 31 spaced apart along a first direction Z. Each shaping roller 31 is rotatably disposed on the frame 10, with the space between the two shaping rollers 31 forming a shaping channel. After the heat shrink tubing 1 is expanded through the tube expansion channel, it is transported to the shaping assembly for shaping.

[0028] In the above technical solution, the flat heat shrink tube 1 can be limited by setting the limiting portion 22, so that the heat shrink tube 1 can enter the tube expansion channel in a vertical state for tube expansion, so that the flat heat shrink tube 1 has a tendency to expand into a circle, thereby pre-shaping the flat heat shrink tube 1. After completing the pre-shaping of the heat shrink tube 1, the two shaping rollers 31 of the shaping roller group 30 will squeeze the upper and lower surfaces of the heat shrink tube 1 to expand the heat shrink tube 1, thereby achieving the effect of secondary shaping of the heat shrink tube 1. In this way, not only is it possible to eliminate the need for manual shaping of the heat shrink tube 1, but the shaping efficiency of the heat shrink tube 1 can also be improved, thereby improving the consistency of the shaping of the heat shrink tube 1 and reducing the defective rate of the subsequent marking heat shrink process.

[0029] It should be noted that in the embodiment of the present invention, the heat shrinkable tube 1 is made of polymer material and will have a certain opening width during manufacturing. After manufacturing is completed, it will be rolled into a coil. At this time, the cross-section of the heat shrinkable tube 1 is two parallel lines. After the coil is opened, its shape will recover to a certain extent, that is, the heat shrinkable tube 1 will open slightly. At this time, the cross-section of the flat heat shrinkable tube 1 is spindle-shaped, and the heat shrinkable tube 1 enters the expansion channel in a vertical state for expansion, which means that the expansion channel squeezes the two ends of the spindle-shaped long axis to shape the heat shrinkable tube 1. Preferably, the spindle-shaped long axis extends along the first direction Z; the two shaping rollers 31 of the shaping roller group 30 will squeeze the upper and lower surfaces of the heat shrinkable tube 1, which means that the two shaping rollers 31 are arranged at intervals along the spindle-shaped long axis to squeeze the two ends of the long axis of the cross-section of the heat shrinkable tube 1.

[0030] It should be noted that, in the embodiment of the present invention, preventing the flat heat shrink tube 1 from rotating means preventing the heat shrink tube 1 from rotating around the center line of the heat shrink tube 1 (ie Figure 1 (X-axis in the figure) rotation.

[0031] like Figure 1 and Figure 3 As shown, in the embodiment of the present invention, the pipe expanding portion 21 includes two pipe expanding rollers spaced apart along the first direction Z. Each pipe expanding roller is rotatably disposed on the frame 10, and the interval between the two pipe expanding rollers forms a pipe expanding channel.

[0032] In the above technical solution, by rotating the two tube expanding rollers, the two tube expanding rollers can squeeze the upper and lower surfaces of the heat shrink tube 1, which can not only pre-shape the flat heat shrink tube 1, but also transport the heat shrink tube 1 so that the heat shrink tube 1 moves along the conveying direction X.

[0033] It should be noted that, in the embodiment of the present invention, the two expansion rollers can extrude the upper and lower surfaces of the heat shrink tube 1, which means that the long axis of the spindle-shaped cross-section of the heat shrink tube 1 extends from one of the two expansion rollers to the other of the two expansion rollers, that is, the upper and lower surfaces of the heat shrink tube 1 are respectively arranged corresponding to the two ends of the spindle-shaped long axis.

[0034] In one embodiment, the expansion portion 21 can be set as a cylindrical structure, and an expansion channel is formed inside the cylindrical structure. The cross-section of the cylindrical structure is a gradual design, wherein the inlet of the cylindrical structure is spindle-shaped and the outlet of the cylindrical structure is elliptical. In this way, when the heat shrink tube 1 moves along the conveying direction X, the heat shrink tube 1 can be shaped.

[0035] It should be noted that, in the embodiment of the present invention, the distance between the two tube expanding rollers is adjustable.

[0036] Specifically, in the embodiment of the present invention, the distance between the two tube expanding rollers is obtained by the staff based on their work experience, and the distance between the two tube expanding rollers is set according to the different diameters of the heat shrink tube 1 .

[0037] like Figure 1 As shown, in the embodiment of the present invention, a groove is provided on the tube expanding roller along the circumference of the tube expanding roller, and the groove forms a limiting portion 22.

[0038] Through the above arrangement, on the one hand, the heat shrink tube 1 enters between the two expansion rollers in a vertical state, and the two grooves are respectively matched with the two ends of the heat shrink tube 1 in the first direction Z (that is, the two ends of the spindle-shaped long axis are respectively matched with the two grooves to prevent the heat shrink tube 1 from rotating during transportation, so that the two expansion rollers can better roll and expand the heat shrink tube 1; on the other hand, the bottom walls of the two grooves will squeeze the upper and lower positions of the surface of the heat shrink tube 1 (that is, squeeze the two ends of the spindle-shaped long axis), so that the cross-sectional shape of the heat shrink tube 1 can be changed, so that the flat heat shrink tube 1 tends to expand into a circle, so that the heat shrink tube 1 can be pre-shaped during transportation.

[0039] In one embodiment, the bottom surface of the groove is a curved surface, and the grooves of the two expansion rollers squeeze the upper and lower positions of the surface of the heat shrink tube 1, so that the upper and lower surfaces of the heat shrink tube 1 change from flat surfaces to curved surfaces, thereby changing the cross-sectional shape of the heat shrink tube.

[0040] In one embodiment, the limiting portion 22 may not be provided on the tube expansion roller, that is, the limiting portion 22 and the tube expansion roller are separately provided, and the limiting portion 22 is a limiting tube having a cross-section adapted to the flat heat shrink tube 1, and the limiting tube is located on the side of the tube expansion roller away from the shaping roller group 30, thereby preventing the heat shrink tube 1 entering between the two tube expansion rollers from rotating.

[0041] like Figure 1 As shown, in the embodiment of the present invention, there are at least two tube expanding parts 21 , and the two tube expanding parts 21 are sequentially arranged along the conveying direction X of the heat shrink tube 1 .

[0042] In the above technical solution, by setting up multiple expansion tube parts 21, on the one hand, it can play a better limiting role on the heat shrink tube 1 and prevent the heat shrink tube 1 from rotating during transportation; on the other hand, the surface of the heat shrink tube 1 can be squeezed at least twice, thereby improving the pre-shaping effect.

[0043] Preferably, in the embodiment of the present invention, two expansion tube portions 21 are provided.

[0044] like Figures 1 to 3 As shown, in an embodiment of the present invention, the shaping assembly further comprises a positioning guide 41 provided on the frame 10 , the positioning guide 41 having a guide through hole 43 , and the positioning guide 41 is located between the pipe expansion assembly and the shaping roller set 30 .

[0045] In the above technical solution, the heat shrink tube 1 enters the guide hole 43 of the positioning guide 41 after being pre-shaped by the tube expansion assembly. The positioning guide 41 can play a role in positioning and guiding the heat shrink tube 1. On the one hand, it can play a positioning role to prevent the heat shrink tube 1 from rotating. On the other hand, it can play a guiding role to enable the heat shrink tube 1 to move along the conveying direction X; on the other hand, it can also maintain the stability of the heat shrink tube 1 when entering the shaping roller group 30, so that the shaping roller group 30 can reshape the heat shrink tube 1.

[0046] like Figure 2 As shown, in the embodiment of the present invention, the cross section of the guide through hole 43 is elliptical, the major axis of the ellipse extends along the first direction Z, and the cross section of the guide through hole 43 is perpendicular to the conveying direction X.

[0047] Through the above arrangement, the elliptical cross section can be adapted to the pre-shaped heat shrink tube 1, so that the heat shrink tube 1 enters the shaping roller group 30 in a vertical state for secondary shaping.

[0048] It should be noted that, in the embodiment of the present invention, the elliptical heat shrink tube 1 enters the shaping roller group in a vertical state, which means that the cross-section of the heat shrink tube 1 after pre-shaping by the tube expansion part 21 is elliptical, and the long axis of the ellipse extends from one of the two shaping rollers 31 to the other of the two shaping rollers 31. Preferably, the long axis of the ellipse extends along the first direction Z.

[0049] like Figures 1 to 3 As shown, in an embodiment of the present invention, the shaping assembly further includes a support guide 42 provided on the frame 10 , the support guide 42 having a support through hole, and the support guide 42 is located on the side of the shaping roller group 30 away from the positioning guide 41 .

[0050] In the above technical solution, the heat shrink tube 1 enters the supporting through hole of the support guide 42 after secondary shaping. On the one hand, the support guide 42 can guide the heat shrink tube 1 so that the heat shrink tube 1 moves along the conveying direction X; on the other hand, the support guide 42 can also support the heat shrink tube 1.

[0051] like Figure 2 As shown, in the embodiment of the present invention, the cross section of the supporting through hole is circular, and the cross section of the supporting through hole is arranged perpendicular to the conveying direction X.

[0052] Through the above arrangement, the heat shrink tube 1 shaped by the shaping roller group 30 can enter the support through hole. On the one hand, the support guide 42 can support the heat shrink tube 1; on the other hand, the heat shrink tube 1 can be guided so that the heat shrink tube 1 moves along the conveying direction X.

[0053] It should be noted that, in the embodiment of the present invention, the plurality of tube expanding rollers and the two shaping rollers 31 are driven by motors, so that the plurality of tube expanding rollers and the two shaping rollers 31 can be rotated.

[0054] like Figures 1 to 4 As shown, in an embodiment of the present invention, the shaping kit device for heat shrink tubes further includes a shaping component 50 arranged on the frame 10. The shaping component 50 is located on the side of the shaping roller group 30 away from the tube expansion assembly. At least part of the shaping component 50 is a columnar structure. The cross-section of the shaping component 50 is circular, so as to reshape the heat shrink tube 1. The cross-section of the shaping component 50 is arranged perpendicular to the conveying direction X.

[0055] Through the above-mentioned arrangement, the heat shrink tube 1 passes through the shaping roller group 30 and moves toward the shaping component 50. When the heat shrink tube 1 and the shaping component 50 are in contact, the heat shrink tube 1 is sleeved on the outer surface of the shaping component 50. In this way, the heat shrink tube 1 with a rectangular cross-section can be expanded and the cross-section of the heat shrink tube 1 can be changed to a square, thereby completing the reshaping of the heat shrink tube 1 so that the heat shrink tube 1 can be sleeved on the wiring harness 2.

[0056] like Figure 1 、 Figure 2 and Figure 4 As shown, in an embodiment of the present invention, the shaping component 50 includes a guide column 51 and a full cylinder 52 connected in sequence, the guide column 51 is located between the full cylinder 52 and the shaping roller group 30, and along the conveying direction X of the heat shrink tube 1, the cross-section of the guide column 51 gradually increases, and the cross-section of the guide column 51 is set perpendicular to the conveying direction X.

[0057] In the above technical solution, the guide column 51 can guide the heat shrink tube 1, so that the heat shrink tube 1 can be smoothly put on the guide column 51, and the heat shrink tube 1 can continue to move along the conveying direction X, so as to facilitate the heat shrink tube 1 to be put on the full cylinder 52; the full cylinder 52 can reshape the heat shrink tube 1 to shape the heat shrink tube 1 with a rectangular cross section into a square cross section, so that the shaping of the heat shrink tube 1 can be completed.

[0058] In one embodiment, the guide post 51 and the full cylinder 52 are both cylindrical.

[0059] like Figures 1 to 4 As shown, in an embodiment of the present invention, the shaping component 50 is movably arranged along the conveying direction X of the heat shrinkable tube 1; the shaping kit for the heat shrinkable tube also includes a cutting assembly 60 located between the shaping component 50 and the shaping roller group 30, and the cutting assembly 60 includes a cutting knife, which is movably arranged relative to the frame 10 along a second direction Y set at an angle to the conveying direction X.

[0060] In the above technical solution, after the heat shrink tube 1 completes the second shaping, the heat shrink tube 1 moves along the conveying direction X. At this time, the shaping component 50 moves toward the direction close to the heat shrink tube 1, and the heat shrink tube 1 is put on the shaping component 50 and shaped. After the heat shrink tube 1 completes the shaping, the cutting component 60 moves along the second direction Y toward the direction close to the heat shrink tube 1 to cut off the heat shrink tube 1.

[0061] Specifically, in the embodiment of the present invention, the cutting assembly 60 further includes a pneumatic cylinder fixedly mounted on the frame 10. The output end of the pneumatic cylinder is connected to a cutting blade. When the heat shrink tubing 1 is shaped in the shaping component 50, the pneumatic cylinder is activated, extending the cutting blade, and the cutting blade is used to cut the heat shrink tubing 1. After cutting is completed, the pneumatic cylinder drives the cutting blade to move away from the heat shrink tubing 1. Similarly, the shaping component 50 is driven by standard components such as the pneumatic cylinder, and the control of the drive units such as the cylinder is performed by sensors and a host computer.

[0062] Specifically, in the embodiment of the present invention, the shaping component 50 can move along the first direction Z. The shaping component 50 is driven by standard components such as cylinders, and the control of driving units such as cylinders is performed by sensors and a host computer.

[0063] like Figures 1 to 4 As shown, in an embodiment of the present invention, the shaping suit device for the heat shrink tube also includes: a fixing component 71, which is located on the side of the shaping component 50 away from the shaping roller group 30, and the fixing component 71 has a clamping cavity that can be opened and closed, and the clamping cavity can clamp the wire harness 2; a material moving component 72, which is located between the fixing component 71 and the shaping roller group 30, and the material moving component 72 includes a clamping portion 73, and the clamping portion 73 has a clamping cavity that can be opened and closed, and the clamping portion 73 is movably arranged relative to the frame 10 along the conveying direction X and the first direction Z of the heat shrink tube 1.

[0064] In the above technical solution, the shaping component 50 first moves along the conveying direction X toward the direction close to the support guide 42 so that the heat shrink tube 1 is sleeved on the shaping component 50, and the cutting knife cuts the heat shrink tube 1 on the shaping component 50. The clamping part 73 clamps the shaped and cut heat shrink tube 1. The shaping component 50 first moves along the conveying direction X toward the direction away from the support guide 42, and then moves downward along the first direction Z. In this way, the material moving component 72 can make way and the cut heat shrink tube 1 can be separated from the shaping component 50. The material moving component 72 moves along the conveying direction X of the heat shrink tube 1 toward the direction close to the fixing component 71 to sleeve the heat shrink tube 1 on the wire harness 2 clamped by the fixing component 71 to complete the operation.

[0065] Specifically, in the embodiment of the present invention, the fixing assembly 71 includes a pneumatic clamping jaw, which is used to clamp the wire harness 2 , and the heat shrink tube 1 is sleeved on the wire harness 2 clamped by the fixing assembly 71 .

[0066] Specifically, in the embodiment of the present invention, the shaping component 50 first moves along the conveying direction X toward the direction close to the support guide 42, so that the heat shrink tube 1 is sleeved on the shaping component 50, and the cutting knife cuts the heat shrink tube 1 on the shaping component 50. When the heat shrink tube 1 is cut, the clamping portion 73 clamps the cut heat shrink tube 1, and the shaping component 50 first moves along the conveying direction X in the direction away from the support guide 42, and then moves downward along the first direction Z. The clamping portion 73 moves along the conveying direction X to approach the fixing component 71 and sleeve the heat shrink tube 1 on the wiring harness 2 clamped by the fixing component 71. At this time, the shaping component 50 can move upward along the first direction Z, and then move downward along the conveying direction Z. The heat shrink tube 1 moves in the direction X toward the support guide 42 and enables the heat shrink tube 1 to be sleeved on the shaping component 50. When the heat shrink tube 1 is sleeved, the clamping portion 73 first moves upward along the first direction Z, and then moves along the conveying direction X in the direction away from the fixing assembly 71 to between the shaping component 50 and the support guide 42. In this way, the shaping component 50 can be avoided to avoid interference between the clamping portion 73 and the shaping component 50. At the same time, the shaping component 50 rounds the heat shrink tube 1, and the clamping portion 73 moves downward along the first direction Z to clamp the cut heat shrink tube 1, thereby improving the shaping efficiency of the heat shrink tube 1 and facilitating the next shaping operation of the heat shrink tube 1.

[0067] Specifically, in the embodiment of the present invention, the clamping part 73 is a pneumatic clamp to clamp or release the heat shrink tube 1; the material moving assembly 72 also includes a motor, a screw and a nut for driving the clamping part 73 to move. Regarding the specific connection method between the motor, the screw, the nut and the clamping part 73, reference can be made to the existing technology and will not be repeated here. The control of the motor and other driving units is carried out through sensors and a host computer.

[0068] Specifically, in the embodiment of the present invention, the working principle of the shaping and sheathing device for heat shrinkable tubes is as follows: after the heat shrinkable tube 1 completes pre-shaping in the tube expansion assembly, it enters the positioning guide 41, and then completes the second shaping of the heat shrinkable tube 1 through the shaping roller group 30, and then enters the support guide 42. After the heat shrinkable tube 1 passes through the support guide 42, it is sheathed on the shaping component 50 to complete the third shaping of the heat shrinkable tube 1. The cutting assembly 60 cuts the shaped heat shrinkable tube 1, and under the action of the clamping part 73 and the material moving assembly 72, the heat shrinkable tube 1 is clamped and moved to the position of the fixing assembly 71, and the heat shrinkable tube 1 is sheathed on the wiring harness 2.

[0069] Specifically, in the embodiment of the present invention, the heat shrink tube 1 is flat before entering the heat shrink tube shaping set device, that is, the cross section of the heat shrink tube 1 is spindle-shaped. After the heat shrink tube 1 is pre-shaped by the two sets of expansion parts 21, the cross section of the heat shrink tube 1 is slightly opened, and there is a tendency to expand into a circle. At this time, the cross section of the heat shrink tube 1 is elliptical. After the heat shrink tube 1 passes through the positioning guide 41 and enters the gap between the two shaping rollers 31 to complete the reshaping, the cross section of the heat shrink tube 1 becomes an irregular rectangle (similar to a rectangle), and then the heat shrink tube 1 is inserted and After passing through the support guide 42 and being sleeved on the outer periphery of the shaping component 50 and being reshaped by the shaping component 50, the cross-section of the heat shrink tube 1 becomes a square, and then the clamping part 73 clamps and holds the heat shrink tube 1 on the shaping component 50, so that the heat shrink tube 1 can be reshaped, and then the clamping part 73 sleeves the heat shrink tube 1 on the outer periphery of the wiring harness 2 of the fixing component 71. In this way, through multiple shaping, the cross-sectional shape of the heat shrink tube 1 completes the transformation from flat to square, ensuring the shaping quality, so that the heat shrink tube 1 can be sleeved on the outer periphery of the wiring harness 2.

[0070] Specifically, in the embodiment of the present invention, the design of the cutting assembly 60 and the clamping portion 73 enables the shaped heat shrink tube 1 to be accurately cut and stably clamped, so as to facilitate subsequent sleeve operations.

[0071] Specifically, in the embodiment of the present invention, by cooperating with the cutting component, the fixing component, and the material moving component in multiple stages, automatic shaping and assembly can be completed, which greatly improves production efficiency, reduces the time required for manual operation, and reduces labor intensity.

[0072] Specifically, in the embodiment of the present invention, the shaping quality and the consistency of the assembly of each heat shrink tube 1 are ensured through precise mechanical operation, thereby avoiding errors caused by manual operation.

[0073] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: by setting a limiting portion, the flat heat shrink tube can be limited, so that the heat shrink tube can enter the tube expansion channel in a vertical state for tube expansion, so that the flat heat shrink tube has a tendency to expand into a circle, thereby pre-shaping the flat heat shrink tube. After completing the pre-shaping of the heat shrink tube, the two shaping rollers of the shaping roller group will squeeze the upper and lower surfaces of the heat shrink tube to expand the heat shrink tube, thereby achieving the effect of secondary shaping of the heat shrink tube. In this way, not only can the heat shrink tube be shaped manually, but the shaping efficiency of the heat shrink tube can be improved, thereby improving the consistency of the heat shrink tube shaping, and further reducing the defective rate of the subsequent marking heat shrink process.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A shaping device for heat shrink tubing, characterized in that: include: Rack (10); A tube expansion assembly is provided on the frame (10), the tube expansion assembly comprising a tube expansion portion (21) and a position limiting portion (22), the position limiting portion (22) being configured to prevent the flat heat shrink tube (1) from rotating, and the tube expansion portion (21) having a tube expansion channel for expanding the heat shrink tube (1); A shaping assembly comprises at least one shaping roller group (30), wherein the shaping roller group (30) comprises two shaping rollers (31) spaced apart along a first direction (Z), each shaping roller (31) being rotatably disposed on the frame (10), and the interval between the two shaping rollers (31) forming a shaping channel, wherein the heat shrink tube (1) is expanded through the tube expansion channel and then transported to the shaping assembly for shaping.

2. The heat shrink tube shaping device according to claim 1, characterized in that: The pipe expansion section (21) comprises two pipe expansion rollers spaced apart along the first direction (Z), each of the pipe expansion rollers being rotatably disposed on the frame (10), and the interval between the two pipe expansion rollers forming the pipe expansion channel.

3. The heat shrink tube shaping device according to claim 2, characterized in that: Each of the tube expansion rollers is provided with a groove arranged along the circumference of the tube expansion roller, and the groove forms the limiting portion (22).

4. The heat shrink tube shaping device according to claim 1, characterized in that: There are at least two tube expansion parts (21), and along the conveying direction (X) of the heat shrink tube (1), at least two tube expansion parts (21) are arranged in sequence.

5. The heat shrink tube shaping device according to any one of claims 1 to 4, characterized in that: The shaping assembly further comprises a positioning guide (41) arranged on the frame (10), the positioning guide (41) having a guide through hole (43), and the positioning guide (41) is located between the pipe expansion assembly and the shaping roller group (30).

6. The heat shrink tube shaping device according to claim 5, characterized in that: The cross section of the guide through hole (43) is elliptical, the major axis of the ellipse extends along the first direction (Z), and the cross section of the guide through hole (43) is arranged perpendicular to the conveying direction (X) of the heat shrink tube (1).

7. The heat shrink tube shaping device according to claim 5, characterized in that: The shaping assembly further comprises a support guide (42) arranged on the frame (10), wherein the support guide (42) has a support through hole, and the support guide (42) is located on a side of the shaping roller group (30) away from the positioning guide (41).

8. The heat shrink tube shaping device according to claim 7, characterized in that: The cross section of the supporting through hole is circular, and the cross section of the supporting through hole is arranged perpendicular to the conveying direction (X) of the heat shrink tube (1).

9. The heat shrink tube shaping device according to any one of claims 1 to 4, characterized in that: The shaping kit for the heat shrink tube (1) further comprises a shaping component (50) arranged on the frame (10), wherein the shaping component (50) is located on a side of the shaping roller group (30) away from the tube expansion assembly, and at least a portion of the shaping component (50) is a columnar structure, and the cross section of the shaping component (50) is circular so as to reshape the heat shrink tube (1), and the cross section of the shaping component (50) is arranged perpendicular to the conveying direction (X) of the heat shrink tube (1).

10. The heat shrink tube shaping device according to claim 9, characterized in that: The shaping component (50) comprises a guide column (51) and a full cylinder (52) connected in sequence, wherein the guide column (51) is located between the full cylinder (52) and the shaping roller group (30), and the cross section of the guide column (51) gradually increases along the conveying direction (X) of the heat shrink tube (1), and the cross section of the guide column (51) is arranged perpendicular to the conveying direction (X).

11. The heat shrink tube shaping device according to claim 9, characterized in that: The shaping component (50) is movably arranged along the conveying direction (X) of the heat shrink tube (1); The shaping set device for the heat shrink tube (1) further comprises a cutting assembly (60) located between the shaping component (50) and the shaping roller group (30), wherein the cutting assembly (60) comprises a cutting knife, and the cutting knife is movably arranged relative to the frame (10) along a second direction (Y) arranged at an angle to the conveying direction (X).

12. The heat shrink tube shaping device according to claim 9, characterized in that: The heat shrink tube shaping set device also includes: A fixing assembly (71) is located on a side of the shaping component (50) facing away from the shaping roller assembly (30), the fixing assembly (71) having a clamping cavity that can be opened and closed, and the clamping cavity is capable of clamping the wire harness (2); The material moving assembly (72) is located between the fixing assembly (71) and the shaping roller group (30), and the material moving assembly (72) includes a clamping portion (73), the clamping portion (73) has a clamping cavity that can be opened and closed, and the clamping portion (73) is movably arranged relative to the frame (10) along the conveying direction (X) of the heat shrink tube (1) and the first direction (Z).

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