Heating equipment for wire harness heat shrink tube
By designing a heating device consisting of guide rollers, a heating box, and a fan system, the problem of uneven heating of the wire harness heat shrink tubing was solved, achieving uniform heating and tight wrapping, thus improving the aesthetics and protective effect of the wire harness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU QIYU ELECTRIC TECH CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-19
AI Technical Summary
Existing wire harness heat shrink tubing heating equipment suffers from uneven heating, affecting aesthetics and tightness.
A heating device comprising guide rollers, a heating box, a motor, a drive wheel, and a toothed belt was designed. The heat shrink tubing is circumferentially heated through an annular toothed plate and a transmission system. A fan blows out uniform hot air, and an adjustable fixing plate clamps the wire harness to ensure heating uniformity and stability.
This achieves uniform heating of the heat shrink tubing, improving heating efficiency and tightness, and ensuring the aesthetics and protective effect of the wire harness.
Smart Images

Figure CN224256069U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire harness heat shrink tubing processing technology, specifically a heating device for wire harness heat shrink tubing. Background Technology
[0002] Wire harness heat shrink tubing is a shrinkable plastic tube used to insulate and protect wires, conductors, and terminals from moisture, abrasion, and damage. It is a specially formulated polyolefin heat shrink sleeve characterized by high-temperature shrinkage, flexibility, flame retardancy, insulation, and corrosion resistance. It is widely used in electronic equipment for wire connections, wire end treatment, and solder joint protection. To ensure a tight fit, the heat shrink tubing is typically heated.
[0003] However, when heating the heat shrink tubing, since it is fitted onto the surface of the wire harness, the heating device needs to heat one side first and then flip it over to heat the other side. This method is prone to uneven heating, which not only affects the appearance of the wire harness after heat shrinking, but also reduces the tightness between the heat shrink tubing and the wire harness. Utility Model Content
[0004] The purpose of this invention is to provide a heating device for heat shrink tubing of wire harnesses, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a heating device for wire harness heat shrink tubing, comprising a base, a mounting frame fixedly connected to the top of the base, a plurality of guide rollers evenly distributed circumferentially on one side of the mounting frame, a connecting frame fixedly connected to the side of the mounting frame away from the guide rollers, a motor fixedly connected to the side of the connecting frame away from the mounting frame, a drive shaft fixedly connected to the output shaft of the motor, a drive wheel fixedly sleeved on the surface of the drive shaft, a toothed belt meshing on the surface of the drive wheel, a transmission wheel meshing inside the toothed belt away from the drive wheel, a transmission shaft fixedly connected inside the transmission wheel, the transmission shaft and the drive shaft being symmetrically arranged and rotatably connected to the mounting frame, a drive gear fixedly sleeved on the surface of both the transmission shaft and the drive shaft, an annular toothed plate meshing on the surface of the drive gear, and the annular toothed plate rotatably connected between the guide rollers and the mounting frame.
[0006] As a further preferred embodiment of this technical solution, a heating box is fixedly connected to the side of the annular toothed plate away from the mounting frame, and an air distribution plate is fixedly connected to the side of the heating box away from the guide roller. Multiple heating wires are arranged inside the heating box.
[0007] As a further preferred embodiment of this technical solution, a cylinder is fixedly connected to one side of the heating box, an installation plate is fixedly connected to the inside of the cylinder, a second motor is fixedly connected to one side of the installation plate, a fan is fixedly connected to the output shaft of the second motor, the fan is located on the side of the installation plate away from the second motor, and a grid is provided on the side of the cylinder away from the heating box.
[0008] As a further preferred embodiment of this technical solution, a control box is fixedly connected to the front of the base, and a housing is fixedly connected to the top of the base.
[0009] As a further preferred embodiment of this technical solution, an adjusting seat is fixedly connected to the top of the base, and a threaded screw is rotatably connected to one side of the adjusting seat. One end of the threaded screw is fixedly connected to a motor, and the motor is fixedly installed on one side of the adjusting seat.
[0010] As a further preferred embodiment of this technical solution, a guide rod is fixedly connected to the side of the adjusting seat away from the threaded screw. Two movable seats are slidably connected to the surface of the guide rod. The movable seats are threadedly connected to the threaded screw. A connecting seat is fixedly connected to the top of the movable seats. A bidirectional screw is rotatably connected inside the connecting seat. A handle is fixedly connected to one end of the bidirectional screw.
[0011] As a further preferred embodiment of this technical solution, guide rods two are symmetrically arranged on both sides of the interior of the connecting seat, and two fixing plates are symmetrically arranged on the surface of the guide rods two, and the fixing plates are threadedly connected to the bidirectional lead screw.
[0012] This utility model provides a heating device for heat shrink tubing of wire harnesses, which has the following beneficial effects:
[0013] (1) This utility model starts the motor, whose output shaft drives the drive shaft and drive wheel to rotate, and transmits the power to the transmission wheel and transmission shaft through the toothed belt, thereby causing the drive gear on the drive shaft and transmission shaft to rotate. The ring toothed plate then rotates between the guide roller and the mounting frame, thereby driving the heating box to circumferentially heat the heat shrink tube to improve the uniformity of heating.
[0014] (2) This utility model places the wire harness with heat shrink tubing between two fixed clamps, turns the handle, the bidirectional screw rotates, the two fixed clamps slide on the surface of the guide rod two and move closer to each other, thereby clamping the two ends of the wire harness. During the heating process of the equipment, the motor three is started, its output shaft drives the threaded screw to rotate, the moving seat slides on the surface of the guide rod one, and drives the connecting seat and the wire harness to move, thereby adjusting the heating area. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;
[0017] Figure 3 This is a schematic diagram of the fixing clamp and connecting seat structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the mounting bracket structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the drive wheel and transmission wheel structure of this utility model;
[0020] Figure 6 This is a schematic diagram of the internal structure of the heating box of this utility model.
[0021] In the diagram: 1. Base; 2. Mounting frame; 3. Guide roller; 4. Connecting frame; 5. Motor 1; 6. Drive shaft; 7. Drive wheel; 8. Toothed belt; 9. Transmission wheel; 10. Transmission shaft; 11. Drive gear; 12. Annular toothed plate; 13. Heating box; 14. Air distribution plate; 15. Heating wire; 16. Cylinder; 17. Mounting plate; 18. Motor 2; 19. Fan; 20. Grille; 21. Control box; 22. Box body; 23. Adjusting seat; 24. Threaded screw; 25. Motor 3; 26. Guide rod 1; 27. Moving seat; 28. Connecting seat; 29. Bidirectional screw; 30. Handle; 31. Guide rod 2; 32. Fixed clamp. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0023] This utility model provides a technical solution: such as Figures 1 to 6 As shown, in this embodiment, a heating device for heat shrink tubing includes a base 1. A mounting frame 2 is fixedly connected to the top of the base 1. Multiple guide rollers 3 are evenly distributed circumferentially on one side of the mounting frame 2. A connecting frame 4 is fixedly connected to the side of the mounting frame 2 away from the guide rollers 3. A motor 5 is fixedly connected to the side of the connecting frame 4 away from the mounting frame 2. A drive shaft 6 is fixedly connected to the output shaft of the motor 5. A drive wheel 7 is fixedly sleeved on the surface of the drive shaft 6. A toothed belt 8 meshes with the surface of the drive wheel 7. A transmission wheel 9 meshes with the side of the toothed belt 8 away from the drive wheel 7. A transmission shaft 10 is fixedly connected to the inside of the transmission wheel 9. The transmission shaft 10 and the drive shaft 6 are symmetrically arranged and rotatably connected to the mounting frame 2. A drive gear 11 is fixedly sleeved on the surface of both the transmission shaft 10 and the drive shaft 6. An annular toothed plate 12 meshes with the surface of the drive gear 11. The annular toothed plate 12 is rotatably connected between the guide rollers 3 and the mounting frame 2.
[0024] When the motor 5 is started, its output shaft drives the drive shaft 6 and drive wheel 7 to rotate, and transmits power to the transmission wheel 9 and transmission shaft 10 through the toothed belt 8. This causes the drive gear 11 on the drive shaft 6 and transmission shaft 10 to rotate, and the annular toothed plate 12 rotates between the guide roller 3 and the mounting frame 2. This drives the heating box 13 to circumferentially heat the heat shrink tubing, thereby improving the uniformity of heating. Since the annular toothed plate 12 is installed between the guide roller 3 and the mounting frame 2, the guide roller 3 on the bottom side of the mounting frame 2 can support the annular toothed plate 12, ensuring the stability during rotation. Furthermore, the guide roller 3 rotates simultaneously with the annular toothed plate 12, thereby improving the smoothness of rotation.
[0025] A heating box 13 is fixedly connected to the side of the annular toothed plate 12 away from the mounting frame 2. A wind distribution plate 14 is fixedly connected to the side of the heating box 13 away from the guide roller 3. Multiple heating wires 15 are arranged inside the heating box 13.
[0026] A cylinder 16 is fixedly connected to one side of the heating box 13. An installation plate 17 is fixedly connected inside the cylinder 16. A second motor 18 is fixedly connected to one side of the installation plate 17. A fan 19 is fixedly connected to the output shaft of the second motor 18. The fan 19 is located on the side of the installation plate 17 away from the second motor 18. A grid 20 is provided on the side of the cylinder 16 away from the heating box 13.
[0027] The heating wire 15 is activated, and the motor 18 is started. Its output shaft drives the fan 19 to rotate at high speed, thereby blowing out the heat generated by the heating wire 15 in the form of hot air. The air is evenly sprayed onto the heat shrink tubing through the air distribution plate 14, avoiding localized heating. A grid mesh 20 is provided on one side of the cylinder 16 to block impurities in the air and ensure the normal operation of the fan 19.
[0028] A control box 21 is fixedly connected to the front of the base 1, and a box body 22 is fixedly connected to the top of the base 1.
[0029] By installing a casing 22 on the outside of the heating equipment, heat loss is reduced and resource utilization is improved.
[0030] An adjusting seat 23 is fixedly connected to the top of the base 1. A threaded screw 24 is rotatably connected to one side of the inside of the adjusting seat 23. A motor 25 is fixedly connected to one end of the threaded screw 24. The motor 25 is fixedly installed on one side of the adjusting seat 23.
[0031] When the motor 25 is started, its output shaft drives the screw 24 to rotate. The moving seat 27 slides on the surface of the guide rod 26 and drives the connecting seat 28 and the wire harness to move, thereby facilitating the adjustment of the heating area.
[0032] Inside the adjusting seat 23, on the side away from the threaded screw 24, a guide rod 26 is fixedly connected. Two movable seats 27 are slidably connected to the surface of the guide rod 26. The movable seats 27 are threadedly connected to the threaded screw 24. A connecting seat 28 is fixedly connected to the top of the movable seat 27. A bidirectional screw 29 is rotatably connected inside the connecting seat 28. A handle 30 is fixedly connected to one end of the bidirectional screw 29.
[0033] The inner sides of the connecting seat 28 are symmetrically provided with guide rods 31, and the surfaces of the guide rods 31 are symmetrically provided with two fixing plates 32. The fixing plates 32 are threadedly connected to the bidirectional lead screw 29.
[0034] The wire harness with heat shrink tubing is placed between two fixed clamps 32. The handle 30 is turned, the bidirectional lead screw 29 rotates, and the two fixed clamps 32 slide on the surface of the guide rod 31 and move closer to each other, thereby clamping the two ends of the wire harness to improve the stability during the heating process.
[0035] This utility model provides a heating device for heat shrink tubing of wire harnesses, the specific working principle of which is as follows:
[0036] In use, start motor 25, whose output shaft drives the threaded screw 24 to rotate. The moving seat 27 slides on the surface of guide rod 26, and drives the connecting seat 28 and the fixed clamping plate 32 to move, so that the mounting frame 2 is between the two sets of fixed clamping plates 32. Place the wire harness with heat shrink tubing between the two fixed clamping plates 32, and make the end of the heat shrink tubing to be heated below the mounting frame 2. Turn handle 30, the bidirectional screw 29 rotates, and the two fixed clamping plates 32 slide on the surface of guide rod 31 and move closer to each other, thereby clamping the two ends of the wire harness and making the heating wire 15 work. The second motor 18 is started, and its output shaft drives the fan 19 to rotate at high speed, thereby blowing out the heat generated by the heating wire 15 in the form of hot air. At the same time, the first motor 5 is started, and its output shaft drives the drive shaft 6 and drive wheel 7 to rotate. The power is transmitted to the transmission wheel 9 and transmission shaft 10 through the toothed belt 8, thereby causing the drive gear 11 on the drive shaft 6 and transmission shaft 10 to rotate. The annular toothed plate 12 then rotates between the guide roller 3 and the mounting bracket 2, thereby driving the heating box 13 to circumferentially heat the heat shrink tubing. The heat shrink tubing shrinks rapidly when heated and tightly wraps around the wire harness.
[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A heating apparatus for wire harness heat shrink tube comprising a base (1), characterized in that: A mounting frame (2) is fixedly connected to the top of the base (1). Multiple guide rollers (3) are evenly distributed circumferentially on one side of the mounting frame (2). A connecting frame (4) is fixedly connected to the side of the mounting frame (2) away from the guide rollers (3). A motor (5) is fixedly connected to the side of the connecting frame (4) away from the mounting frame (2). A drive shaft (6) is fixedly connected to the output shaft of the motor (5). A drive wheel (7) is fixedly sleeved on the surface of the drive shaft (6). A toothed belt (8) meshes with the surface of the drive wheel (7). A transmission wheel (9) is engaged inside the toothed belt (8) on the side away from the drive wheel (7). A transmission shaft (10) is fixedly connected inside the transmission wheel (9). The transmission shaft (10) and the drive shaft (6) are symmetrically arranged and rotatably connected on the mounting frame (2). A drive gear (11) is fixedly sleeved on the surface of both the transmission shaft (10) and the drive shaft (6). An annular toothed plate (12) is engaged on the surface of the drive gear (11). The annular toothed plate (12) is rotatably connected between the guide roller (3) and the mounting frame (2).
2. A heating apparatus for wire harness heat shrink tube according to claim 1, characterized by: A heating box (13) is fixedly connected to the side of the annular toothed plate (12) away from the mounting frame (2). A wind distribution plate (14) is fixedly connected to the side of the heating box (13) away from the guide roller (3). Multiple heating wires (15) are arranged inside the heating box (13).
3. A heating apparatus for wire harness heat shrink tube according to claim 2, characterized by: A cylinder (16) is fixedly connected to one side of the heating box (13). An installation plate (17) is fixedly connected inside the cylinder (16). A second motor (18) is fixedly connected to one side of the installation plate (17). A fan (19) is fixedly connected to the output shaft of the second motor (18). The fan (19) is located on the side of the installation plate (17) away from the second motor (18). A grid (20) is provided on the side of the cylinder (16) away from the heating box (13).
4. The heating apparatus for wire harness heat shrink tube according to claim 1, characterized by: A control box (21) is fixedly connected to the front of the base (1), and a box body (22) is fixedly connected to the top of the base (1).
5. The heating apparatus for wire harness heat shrink tube according to claim 1, characterized by: An adjusting seat (23) is fixedly connected to the top of the base (1). A threaded screw (24) is rotatably connected to one side of the inner side of the adjusting seat (23). A motor (25) is fixedly connected to one end of the threaded screw (24). The motor (25) is fixedly installed on one side of the adjusting seat (23).
6. A heating apparatus for wire harness heat shrink tube according to claim 5, characterized by: A guide rod (26) is fixedly connected to the side of the adjusting seat (23) away from the threaded screw (24). Two movable seats (27) are slidably connected to the surface of the guide rod (26). The movable seats (27) are threadedly connected to the threaded screw (24). A connecting seat (28) is fixedly connected to the top of the movable seat (27). A bidirectional screw (29) is rotatably connected inside the connecting seat (28). A handle (30) is fixedly connected to one end of the bidirectional screw (29).
7. A heating apparatus for wire harness heat shrink tubing according to claim 6, wherein: The connecting seat (28) has two guide rods (31) symmetrically arranged on both sides inside. The guide rods (31) have two fixing plates (32) symmetrically arranged on their surfaces. The fixing plates (32) are threadedly connected to the bidirectional lead screw (29).