A heat shrinking device for cable sheaths
By designing a cable sheath heat shrinking device, which uses a ball screw and drive motor to move the heating element at a uniform speed, the problem of uneven heating of handheld hot air guns is solved, and uniform heating and high-quality heat shrinking of cable sheaths are achieved.
Patent Information
- Application Number
- CN202522546749.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-12-01
AI Technical Summary
In the existing technology, when a handheld hot air gun heats the cable sleeve, it is difficult to ensure the uniformity of heating, which can easily lead to local overheating or insufficient heating in some areas, affecting the sealing quality.
A cable sheath heat shrinking device comprising an upper box and a lower box was designed. A ball screw and a drive motor are used to drive the heating element to move at a constant speed, thereby achieving uniform heating of the cable sheath. Temperature control is ensured by a PLC controller and an infrared temperature sensor to prevent overheating.
This method achieves uniform heating of the cable sheath, improves the quality of heat shrinking, avoids the instability of manual operation, and ensures a good sealing effect.
Smart Images
Figure CN224946588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable processing technology, and in particular to a heat shrinking device for cable sheaths. Background Technology
[0002] A cable sheath is a tool used to protect cables. It is usually placed on the outermost layer of the cable and is mostly made of rubber or similar materials. It is used to protect the cable core and other structures and has properties such as corrosion resistance and moisture resistance. After the cable sheath is placed on the outer layer of the cable core, it usually needs to be shrunk by a heat shrinking process to make it tightly attached to the outer layer of the cable core.
[0003] During cable installation and repair, existing technologies typically use handheld hot air guns to heat heat shrink tubing. However, this method relies entirely on manual operation, making it difficult to guarantee uniform heating. This can easily lead to problems such as localized overheating and burning, or insufficient heating and incomplete shrinkage, affecting the sealing quality. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a heat-shrinking device for cable sheaths.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a heat shrinking device for cable sheaths, comprising an upper housing and a lower housing, wherein two symmetrical sides of the upper housing and the lower housing are provided with interconnected cable placement openings, an upper insulating mounting component and a lower insulating mounting component are provided along the axial direction of the cable placement openings, an electric heating element is provided between the upper insulating mounting component and the lower insulating mounting component, one end of the two electric heating elements is connected to each other, a ball screw is connected below the lower insulating mounting component, and one end of the ball screw is connected to a drive motor.
[0006] Preferably, the movable end of the ball screw is connected to the bottom of the lower insulating mounting component.
[0007] Preferably, both ends of the ball screw are mounted through bearings on two symmetrical sides of the lower housing.
[0008] Preferably, both the upper and lower boxes have elongated holes for wires on their sides.
[0009] Preferably, the heating element is semi-circular, and the radial dimension of the inner diameter between the two heating elements is greater than the radial dimension between the two cable placement ports.
[0010] Preferably, both ends of the upper insulating mounting component and the lower insulating mounting component are equipped with fixing blocks, and fixing rods are installed through the sides of the four fixing blocks. The two ends of the four fixing rods are respectively installed on two symmetrical sides inside the upper and lower boxes.
[0011] Preferably, two insert rods and two U-shaped parts are respectively installed at both ends of the upper insulating mounting part and the lower insulating mounting part, and the bottom end of the insert rod is inserted into the inner hole of the U-shaped part.
[0012] Preferably, cable limiting arc members are installed on two symmetrical sides inside the upper and lower boxes, and the inner diameter between two adjacent cable limiting arc members is the same as the radial dimension between the two cable placement openings.
[0013] Preferably, one end of one of the heating elements is equipped with a conductive positioning pin, and one end of the other heating element is provided with a socket, wherein the conductive positioning pin is inserted into the socket.
[0014] Preferably, limit switches are installed on both symmetrical sides inside the lower housing, and the limit switches are located in the direction of movement of the lower insulating mounting member.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] This solution uses a drive motor to rotate a ball screw at a constant speed, which in turn drives two heating elements to move at a constant speed along the axial direction, thus achieving uniform heating of the cable sheath. This avoids the instability of manual operation and ensures the quality of heat shrinking. Attached Figure Description
[0017] Figure 1 This is an isometric view of the present invention;
[0018] Figure 2 This is a cross-sectional view of the present invention;
[0019] Figure 3 This is a schematic diagram showing the connection between the upper insulating mounting component and the lower insulating mounting component of this utility model;
[0020] Figure 4 This is a schematic diagram showing the state of the cable and cable sleeve being processed using this utility model.
[0021] In the diagram: 1. Upper housing; 2. Cable placement port; 3. Lower housing; 4. Ball screw; 5. Air hole; 6. Wire elongated hole; 7. Drive motor; 8. Upper insulating mounting piece; 9. Fixing rod; 10. Cable limiting arc piece; 11. Lower insulating mounting piece; 12. Fixing block; 13. Conductive positioning pin; 14. Insert rod; 15. Heating element; 16. Limit switch; 17. Cable sleeve; 18. Cable; 19. Detailed Implementation
[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.
[0023] like Figure 1-4 The heat shrinking device for a cable sheath shown includes an upper housing 1 and a lower housing 3. Each of the two symmetrical sides of the upper housing 1 and the lower housing 3 has interconnected cable placement openings 2. An upper insulating mounting component 8 and a lower insulating mounting component 11 are provided along the axial direction of the cable placement openings 2. An electric heating element 16 is provided between the upper insulating mounting component 8 and the lower insulating mounting component 11, with one end of each heating element 16 connected to the other. A ball screw 4 is connected below the lower insulating mounting component 11, and one end of the ball screw 4 is connected to a drive motor 7. The movable end of the ball screw 4 is connected to the bottom of the lower insulating mounting component 11. When controlling the movement of the two heating elements 16, first control the two heating elements 16 to be energized. When the required temperature is reached, control the drive motor 7 to be energized. The drive motor 7 drives the lead screw in the ball screw 4 to rotate at a constant speed, thereby controlling the horizontal movement of the movable end, which drives the lower insulating mounting part 11 to move. The lower insulating mounting part 11 drives the upper insulating mounting part 8 to move synchronously, which facilitates the control of the two heating elements 16 to move at a constant speed along the axial direction of the cable sleeve 18. At the same time, the heat generated by the two heating elements 16 performs a heat shrinking operation on the cable sleeve 18.
[0024] Both ends of the ball screw 4 are mounted on the two symmetrical sides of the lower housing 3 through bearings. The bearings allow the ball screw 4 to rotate stably in the lower housing 3 after being subjected to force.
[0025] Both the upper housing 1 and the lower housing 3 have elongated wire holes 6 on their sides for wires to pass through. The wires connected to the heating element 16 can pass through the elongated wire holes 6. It should be noted that the wires on the upper heating element 16 pass through the elongated wire holes 6 in the upper housing 1, and the wires on the lower heating element 16 pass through the elongated wire holes 6 in the lower housing 3, which facilitates the separation operation between the upper housing 1 and the lower housing 3.
[0026] The heating element 16 is semi-circular. The radial dimension of the inner diameter between the two heating elements 16 is larger than the radial dimension between the two cable placement openings 2. After the two heating elements 16 are combined, they form a ring that is fitted around the cable sleeve. This prevents the two heating elements 16 from directly contacting the surface of the cable sleeve and causing damage. At the same time, the heat generated by the two heating elements 16 is distributed around the cable sleeve, which can heat the cable sleeve from 360°, thus improving the quality of heat shrinking of the cable sleeve.
[0027] Both ends of the upper insulating mounting component 8 and the lower insulating mounting component 11 are equipped with fixing blocks 12. Fixing rods 9 are installed through the sides of the four fixing blocks 12. The two ends of the four fixing rods 9 are respectively installed on two symmetrical sides inside the upper box 1 and the lower box 3. The setting of the four fixing rods 9 improves the stability of the upper insulating mounting component 8 and the lower insulating mounting component 11 in the upper box 1 and the lower box 3 respectively. When the upper insulating mounting component 8 and the lower insulating mounting component 11 are moved under force, they also slide on the surface of the fixing rods 9 through the fixing blocks 12, which facilitates the stability of the two heating elements 16 when they are moved under force.
[0028] Two insert rods 14 and two loop-shaped parts 15 are respectively installed at both ends of the upper insulating mounting part 8 and the lower insulating mounting part 11. The bottom end of the insert rod 14 is inserted into the inner hole of the loop-shaped part 15. When the lower insulating mounting part 11 is subjected to force and moves, the lower insulating mounting part 11 drives the insert rod 14 to move through the loop-shaped part 15. After the insert rod 14 is subjected to force, it drives the upper insulating mounting part 8 to move synchronously, which improves the stability of the connection between the two heating elements 16.
[0029] Cable limiting arc members 10 are installed on two symmetrical sides inside the upper box 1 and the lower box 3. The inner diameter between two adjacent cable limiting arc members 10 is the same as the radial dimension between the two cable placement ports 2. The cable limiting arc members 10 allow one end of the cable to pass through, increasing the support area for the cable and thus improving the stability of the cable during heat shrinking.
[0030] One end of one heating element 16 is equipped with a conductive positioning pin 13, and one end of the other heating element 16 has a socket. The conductive positioning pin 13 is inserted into the socket. The cooperation between the conductive positioning pin 13 and the socket further improves the stability of the connection between the two heating elements 16, thereby improving the conductivity between the two heating elements 16, allowing the two heating elements 16 to be connected in series.
[0031] Limit switches 17 are installed on two symmetrical sides inside the lower housing 3, and the limit switches 17 are located in the direction of movement of the lower insulating mounting 11. The two limit switches 17 are also connected to the PLC controller via wires. The PLC controller is connected to the drive motor 7 and the heating element 16 via wires. Infrared temperature sensors are installed on the two heating elements 16 and connected to the PLC controller. This allows for convenient control of the heating temperature of the heating element 16 on the heating sleeve, preventing the outer surface of the cable sleeve from burning due to excessive temperature.
[0032] In this design, the lower insulating mounting component 11 and the upper insulating mounting component 8 are made of uniform polycarbonate, which serves to provide insulation and high temperature resistance.
[0033] In this design, heating element 16 is a heating rod.
[0034] In this design, multiple air holes 5 are provided on the surfaces of the upper box 1 and the lower box 3. When heat is generated inside the box, some of the heat is discharged through the air holes 5 on the upper box 1, while cold air from the outside is input through the air holes 5 in the lower box 3. After the cable sleeve 18 is heat-shrinked, the heat can be easily discharged.
[0035] In this design, the upper box 1 and the lower box 3 are connected by four fasteners, which are distributed on the four sides of the upper box 1 and the lower box 3.
[0036] Working principle: When heat shrinking the cable sleeve, the cable sleeve 18 is first placed on the cable 19 at the position requiring protection. Then, the cable 19 is partially placed in the cable placement port 2 and the cable limiting arc member 10 in the lower box 3. The cable sleeve 18 is located in the lower box 3. Next, the upper box 1 is placed on top of the lower box 3 and fixed with a buckle. Then, the PLC controller controls the two heating elements 16 to be energized. When the required temperature is reached, the drive motor 7 is energized. The drive motor 7 drives the screw in the ball screw 4 to rotate at a constant speed, controlling the horizontal movement of the movable end, which drives the lower insulating mounting member 11 to move. The lower insulating mounting member 11 drives the upper insulating mounting member 8 to move synchronously, which facilitates the control of the two heating elements 16 to move at a constant speed along the axial direction of the cable sleeve 18. At the same time, the heat generated by the two heating elements 16 can perform a uniform heat shrinking operation on the cable sleeve 18.
[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A heat-shrinking device for cable sleeve, comprising an upper box body (1) and a lower box body (3), both symmetric sides of the upper box body (1) and the lower box body (3) are provided with cable placing openings (2) which are in communication with each other, characterized in that, An upper insulating mounting component (8) and a lower insulating mounting component (11) are provided along the axial direction of the cable placement port (2). An electric heating element (16) is provided between the upper insulating mounting component (8) and the lower insulating mounting component (11). One end of the two electric heating elements (16) are connected to each other. A ball screw (4) is connected below the lower insulating mounting component (11). One end of the ball screw (4) is connected to a drive motor (7).
2. A heat-shrinkable device for cable jacket according to claim 1, wherein, The movable end of the ball screw (4) is connected to the bottom of the lower insulating mounting (11).
3. The heat shrinking device for a cable sheath according to claim 1, characterized in that, The two ends of the ball screw (4) are mounted on the two symmetrical sides of the lower housing (3) through bearings.
4. The heat shrinking device for a cable sheath according to claim 1, characterized in that, Both the upper box (1) and the lower box (3) have wire elongated holes (6) on their sides.
5. The heat shrinking device for a cable sheath according to claim 1, characterized in that, The heating element (16) is semi-circular, and the radial dimension of the inner diameter between the two heating elements (16) is greater than the radial dimension between the two cable placement ports (2).
6. The heat shrinking device for a cable sheath according to claim 1, characterized in that, Both ends of the upper insulating mounting component (8) and the lower insulating mounting component (11) are equipped with fixing blocks (12), and fixing rods (9) are installed through the sides of the four fixing blocks (12). The two ends of the four fixing rods (9) are respectively installed on two symmetrical sides inside the upper box (1) and the lower box (3).
7. The heat shrinking device for a cable sheath according to claim 1, characterized in that, The upper insulating mounting component (8) and the lower insulating mounting component (11) are respectively equipped with two insert rods (14) and two spiral members (15), with the bottom end of the insert rod (14) inserted into the inner hole of the spiral member (15).
8. The heat shrinking device for a cable sheath according to claim 1, characterized in that, Cable limiting arc members (10) are installed on two symmetrical sides inside the upper box (1) and lower box (3). The inner diameter between two adjacent cable limiting arc members (10) is the same as the radial dimension between the two cable placement ports (2).
9. A heat-shrinking device for a cable sheath according to claim 1, characterized in that, One end of one of the heating elements (16) is equipped with a conductive positioning pin (13), and the other heating element (16) has a socket at one end, with the conductive positioning pin (13) being inserted into the socket.
10. A heat-shrinking device for a cable sheath according to claim 1, characterized in that, Limit switches (17) are installed on two symmetrical sides inside the lower housing (3), and the limit switches (17) are located in the direction of movement of the lower insulating mounting (11).