A heat shrinking device for cable sheaths

Abstract

This utility model relates to the field of heat shrinking device technology, specifically a heat shrinking device for cable sheaths, including a heating box, a connecting sleeve, and a guide rod. A hot air blower is provided at the lower end of the heating box, and a drive motor is provided on the outside of the hot air blower. A connecting groove is opened inside the heating box, and a connecting sleeve is provided on the outside of the heating box. A driven gear is installed on one side of the outer wall of the connecting sleeve. A circular array of movable holes is opened on the inner wall of the connecting sleeve, and a guide rod is movably installed inside the movable holes. A fixing block is welded to one end of the guide rod, and a spring is welded to the outer wall of the fixing block. A ball bearing is rotatably installed on one side of the outer wall of the spring bearing. The ball bearing achieves the purpose of squeezing and flattening the outer wall of the cable sheath. Since the connecting sleeve can rotate circumferentially through the driven gear, the position of the ball bearing can be adjusted to ensure the complete flattening of the outer surface of the cable sheath by the ball bearing, thus ensuring the tightness of the cable sheath and the internal battery core.

Description

Technical Field

[0001] This utility model relates to the field of heat shrinking device technology, specifically to a heat shrinking device for cable sheaths. Background Technology

[0002] Cable sheaths prevent cables from being damaged by external impacts, compression, punctures, etc., during laying and use. As an outer insulating barrier, the cable sheath prevents leakage and short circuits, ensuring the safe operation of the electrical system. Existing cable sheaths are classified by material, including polyvinyl chloride, polyethylene, polyurethane, thermoplastic elastomers, or fluoroplastics. Heat-shrinkable cable sheaths are protective sheaths made using the "memory effect" of thermoplastic polymer materials. At room temperature, they are rigid or semi-rigid structures. When heated to a specific temperature (usually 60-120℃), the material's molecular chains activate, shrink, and tightly wrap around the cable surface, forming a sealed and insulating protective layer.

[0003] The heat shrinking device for cable sheaths typically uses a hot air gun to heat the cable heat shrink sheath. It uses an electric heating wire to heat the air, and then blows out the hot air through a fan, so that the hot air can be evenly heated on the outside of the cable sheath. After the cable sheath is heat-shrinked, it fits tightly against the cable core.

[0004] While existing heat shrinking devices offer numerous advantages during use, they still suffer from several problems. Their ability to level cable sheaths is insufficient. After the cable sheath shrinks due to heat, the device can only deform based on its own shrinkage, but it cannot level the surface of the shrunken cable sheath, resulting in poor tightness of the cable sheath's coverage. Utility Model Content

[0005] To address the problems in the prior art, this utility model provides a heat shrinking device for cable sheaths.

[0006] The technical solution adopted by this utility model to solve its technical problem is a heat shrinking device for cable sheaths, including a heating box, a connecting sleeve, and a guide rod. A hot air blower is provided at the lower end of the heating box, and a drive motor is provided on the outside of the hot air blower. A connecting groove is opened inside the heating box, and a connecting sleeve is provided on the outside of the heating box. A driven gear is installed on one side of the outer wall of the connecting sleeve. A circular array of movable holes is opened on the inner wall of the connecting sleeve, and a guide rod is movably installed inside the movable holes. A fixing block is welded to one end of the guide rod, and a spring is welded to the outer wall of the fixing block. A ball bearing is rotatably installed on one side of the outer wall of the spring.

[0007] By adopting the above technical solution, the drive motor drives the impeller inside the hot air blower, which in turn drives the flow of high-temperature air inside the hot air blower to heat the inside of the heating box. When the cable carrying the cable sleeve passes through the inside of the heating box, the temperature inside the heating box achieves the purpose of heat shrinking the cable sleeve. When the cable sleeve passes out from left to right inside the heating box and the connecting sleeve, the cable sleeve is between multiple springs, and the ball bearings achieve the purpose of pressing and flattening the outer wall of the cable sleeve. Since the connecting sleeve can rotate circumferentially through the driven gear, the position of the ball bearings can be adjusted to ensure the flattening of the outer surface of the cable sleeve by the ball bearings, thus ensuring the tightness of the cable sleeve and the internal battery core.

[0008] Specifically, the output end of the drive motor is connected to the input end of the hot air blower, and the output end of the drive motor is connected to a drive gear by a pin. The size of the drive gear is larger than that of the driven gear, and the drive gear meshes with the driven gear.

[0009] By adopting the above technical solution, when the output end of the drive motor rotates, it can drive the drive gear to rotate while driving the internal impeller of the hot air blower to rotate. It can also drive the connecting sleeve to rotate synchronously through the driven gear. Furthermore, by controlling the gear ratio between the drive gear and the driven gear, the rotation speed of the connecting sleeve can be controlled to ensure the displacement speed of the subsequent balls on the outside of the cable sleeve.

[0010] Specifically, the inner wall of the connecting groove is provided with exhaust holes arranged in a circular array, and the exhaust holes are connected to the interior of the heating box.

[0011] By adopting the above technical solution, the multi-point exhaust holes can make the hot airflow inside the connecting groove evenly distributed inside the heating box, ensuring uniform heating of the outside of the cable sheath and avoiding uneven heating.

[0012] Specifically, the heating box has a diversion pipe welded to both outer walls, the diversion pipe is connected to the inside of the connecting groove, and the other end of the diversion pipe is connected to the exhaust end of the hot air blower. A return pipe is threaded to one side of the lower end of the inner wall of the heating box, and the other end of the return pipe is connected to the air inlet end of the hot air blower.

[0013] By adopting the above technical solution, the hot air generated inside the hot air blower is transported to the inside of the connecting groove through the diversion pipe, and the hot air inside the connecting groove can flow back to the inside of the hot air blower through the return pipe, forming a closed-loop heating system, improving heat utilization, reducing the diffusion of hot air outside the heating box, and improving the working comfort of the staff.

[0014] Specifically, a bearing is interference-fitted onto one side of the inner wall of the connecting sleeve, and the inner ring of the bearing is interference-fitted onto the outside of the heating box. The connecting sleeve is rotatably connected to the heating box through the bearing.

[0015] By adopting the above technical solution, the bearing supports the position of the connecting sleeve and ensures that the connecting sleeve rotates stably and smoothly outside the heating box via the bearing.

[0016] Specifically, the guide rod end is threadedly connected to a limiting plate, which is located outside the connecting sleeve. The inner wall of the movable hole and the outer wall of the guide rod are both designed in a rectangular shape.

[0017] The limiting plate restricts the movement trajectory of the guide rod, preventing it from dislodging from the movable hole. Furthermore, the rectangular shape restricts the rotation of the guide rod, ensuring a stable movement trajectory.

[0018] Specifically, a support spring is sleeved on the outer side of the guide rod, and the two ends of the support spring are in contact with the inner wall of the connecting sleeve and the outer wall of the fixing block, respectively. The fixing block is elastically connected to the inner wall of the connecting sleeve through the support spring.

[0019] By adopting the above technical solution, the support spring can push the fixed block, ensuring that the fixed block's position is relatively stable and that the position of the fixed block can be adjusted. This ensures that the spacing between the springs can adapt to different cable sleeve diameters, guaranteeing the adaptability of the equipment. Furthermore, the elasticity of the springs drives the balls to continuously contact the outer wall of the cable sleeve.

[0020] The beneficial effects of this utility model are:

[0021] The heat shrinking device for cable sheath described in this utility model uses ball bearings to compress and flatten the outer wall of the cable sheath. Furthermore, since the connecting sleeve can rotate circumferentially through the driven gear, the position of the ball bearings can be adjusted to ensure the complete flattening of the outer surface of the cable sheath by the ball bearings, thus guaranteeing the tightness of the cable sheath and the internal battery core.

[0022] The present invention discloses a heat shrinking device for cable sheaths. When the cable carrying the cable sheath passes through the inside of a heating box, the heat shrinking process of the cable sheath is achieved by the temperature inside the heating box. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the main structure of the heating box of this utility model;

[0025] Figure 2 This is a schematic diagram of the connecting sleeve structure of this utility model;

[0026] Figure 3 This is a cross-sectional view of the heating box structure of this utility model;

[0027] Figure 4This is an exploded view of the connecting sleeve structure of this utility model;

[0028] Figure 5 This is an exploded view of the guide rod structure of this utility model.

[0029] In the diagram: 1. Heating box; 11. Hot air blower; 12. Diverter pipe; 13. Connecting groove; 14. Exhaust port; 15. Drive gear; 16. Drive motor; 17. Return pipe; 2. Connecting sleeve; 21. Driven gear; 22. Bearing; 23. Movable hole; 3. Guide rod; 31. Limiting plate; 32. Fixing block; 33. Support spring; 34. Spring leaf; 35. Ball bearing. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0031] To save manpower and improve efficiency, as one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the heat shrinking device for cable sheaths of this utility model includes a heating box 1, a connecting sleeve 2, and a guide rod 3. A hot air blower 11 is provided at the lower end of the heating box 1, and a drive motor 16 is provided on the outside of the hot air blower 11. A connecting groove 13 is provided inside the heating box 1, and a connecting sleeve 2 is provided on the outside of the heating box 1. A driven gear 21 is installed on one side of the outer wall of the connecting sleeve 2. A circular array of movable holes 23 are provided on the inner wall of the connecting sleeve 2. A guide rod 3 is movably installed inside the movable holes 23. A fixing block 32 is welded to one end of the guide rod 3. A spring 34 is welded to the outer wall of the fixing block 32. A ball bearing 35 is rotatably installed on one side of the outer wall of the spring 34.

[0032] In use, the drive motor 16 drives the impeller inside the hot air blower 11, which drives the high-temperature air inside the hot air blower 11 to flow, thereby heating the inside of the heating box 1. When the cable carrying the cable sleeve passes through the inside of the heating box 1, the temperature inside the heating box 1 achieves the purpose of heat shrinking the cable sleeve. When the cable sleeve passes out from left to right inside the heating box 1 and the connecting sleeve 2, the cable sleeve is between multiple springs 34, and the ball bearings 35 achieve the purpose of pressing and flattening the outer wall of the cable sleeve. Since the connecting sleeve 2 can rotate circumferentially through the driven gear 21, the position of the ball bearings 35 can be adjusted to ensure the flattening of the outer surface of the cable sleeve by the ball bearings 35, thus ensuring the tightness of the cable sleeve and the internal battery core.

[0033] To drive rotation, for example, such as Figure 2As shown, the output end of the drive motor 16 is connected to the input end of the hot air blower 11. The output end of the drive motor 16 is connected to the drive gear 15 by a pin. The size of the drive gear 15 is larger than that of the driven gear 21. The drive gear 15 meshes with the driven gear 21.

[0034] When in use, when the output end of the drive motor 16 rotates, it can drive the internal impeller of the hot air blower 11 to rotate, and at the same time drive the drive gear 15 to rotate. It can also drive the connecting sleeve 2 to rotate synchronously through the driven gear 21. By controlling the gear ratio between the drive gear 15 and the driven gear 21, the rotation speed of the connecting sleeve 2 can be controlled to ensure the displacement speed of the subsequent ball bearing 35 outside the cable sleeve.

[0035] For example, to expel hot air, such as Figure 3 As shown, the inner wall of the connecting groove 13 is provided with exhaust holes 14 arranged in a circular array, and the exhaust holes 14 are connected to the interior of the heating box 1.

[0036] During use, the multiple exhaust holes 14 can evenly distribute the hot airflow inside the connecting groove 13 inside the heating box 1, ensuring uniform heating of the outer side of the cable sleeve and avoiding uneven heating.

[0037] To control the exhaust path, for example, such as Figure 3 As shown, the heating box 1 has a diversion pipe 12 welded on both sides of the outer wall. The diversion pipe 12 is connected to the inside of the connecting groove 13. The other end of the diversion pipe 12 is connected to the exhaust end of the hot air blower 11. The lower end of the inner wall of the heating box 1 is threaded with a return pipe 17. The other end of the return pipe 17 is connected to the air inlet end of the hot air blower 11.

[0038] When in use, the hot air generated inside the hot air blower 11 is transported to the inside of the connecting groove 13 through the diversion pipe 12, and the hot air inside the connecting groove 13 can flow back to the inside of the hot air blower 11 through the return pipe 17, forming a closed-loop heating system, improving heat utilization, reducing the diffusion of hot air outside the heating box 1, and improving the working comfort of the staff.

[0039] To maintain rotational stability, for example, such as Figure 4 As shown, a bearing 22 is interference-fitted to one side of the inner wall of the connecting sleeve 2. The inner ring of the bearing 22 is interference-fitted to the outside of the heating box 1, and the connecting sleeve 2 is rotatably connected to the heating box 1 through the bearing 22.

[0040] During use, the bearing 22 supports the position of the connecting sleeve 2 and ensures that the connecting sleeve 2 rotates stably and smoothly on the outside of the heating box 1 via the bearing 22.

[0041] To limit the movement trajectory, for example, such as Figure 4As shown, the end of the guide rod 3 is threadedly connected to a limiting plate 31, which is located outside the connecting sleeve 2. The inner wall of the movable hole 23 and the outer wall of the guide rod 3 are both designed in a rectangular shape.

[0042] During use, the limiting plate 31 restricts the movement trajectory of the guide rod 3 to prevent the guide rod 3 from coming out of the movable hole 23, and the rectangular shape restricts the rotation of the guide rod 3, ensuring the stability of the movement trajectory of the guide rod 3.

[0043] For continuous contact, for example, such as Figure 5 As shown, a support spring 33 is sleeved on the outside of the guide rod 3. The two ends of the support spring 33 are in contact with the inner wall of the connecting sleeve 2 and the outer wall of the fixing block 32, respectively. The fixing block 32 is elastically connected to the inner wall of the connecting sleeve 2 through the support spring 33.

[0044] During use, the support spring 33 can push the fixing block 32 to ensure that the position of the fixing block 32 is relatively stable and that the position of the fixing block 32 can be adjusted to ensure that the spacing between the springs 34 can adapt to the diameter of different cable sleeves, thus ensuring the adaptability of the equipment. The elasticity of the springs 34 drives the ball 35 to continuously contact the outer wall of the cable sleeve.

[0045] When this utility model is in use, the output shaft of the drive motor 16 simultaneously drives the impeller inside the hot air blower 11 to rotate. The impeller draws air into the hot air blower 11 and heats it to the set temperature. The high-temperature airflow generated by the hot air blower 11 enters the connecting slots 13 on both sides of the heating box 1 through the diversion pipe 12, evenly fills the annular space, and sprays the hot air onto the surface of the cable sleeve in an annular direction through the circular array exhaust holes 14, forming a uniform heat field.

[0046] Insert the cable fitted with heat shrink tubing into the opening on the left side of the heating box 1. Move the cable from left to right at a set speed of 0.5-2 m / min. When it passes through the heating area, the heat shrink tubing softens and begins to shrink.

[0047] The output shaft of the drive motor 16 drives the drive gear 15 to rotate, and through gear meshing, drives the driven gear 21 and the connecting sleeve 2 to rotate synchronously. The rotating connecting sleeve 2 drives the guide rod 3 and the ball 35 to make circumferential motion along the outside of the heat shrink tubing, applying radial pressure to the shrinking tubing. The elastic deformation of the spring 34 allows the ball 35 to adapt to the change in the outer diameter of the cable, while continuously squeezing the surface of the tubing to eliminate any possible protrusions or unevenness.

[0048] It should be noted that this utility model is a heat shrinking device for cable sheaths. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0049] 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 descriptions of the above embodiments and specifications are merely illustrative of the 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 protection claimed by this 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 jackets, characterized by, The utility model relates to a heating box (1) is provided with hot air blower (11) in lower extreme, hot air blower (11) outside is provided with drive motor (16), heating box (1) inside is opened with intercommunication groove (13), heating box (1) outside is provided with connecting sleeve (2), connecting sleeve (2) outer wall one side is installed with driven gear (21), connecting sleeve (2) inner wall is opened with movable hole (23) of circular array distribution, movable hole (23) inside movable mounting has guide rod (3), guide rod (3) one end is welded with fixed block (32), fixed block (32) outer wall is welded with reed (34), reed (34) one side outer wall rotatory mounting has ball (35).

2. A heat-shrinkable device for cable jacket according to claim 1, wherein, The output end of the drive motor (16) is connected with the input end of the hot air blower (11), the output end pin shaft of the drive motor (16) is connected with the driving gear (15), the size of the driving gear (15) is greater than that of the driven gear (21), and the driving gear (15) is engaged with the driven gear (21).

3. A heat-shrinkable device for cable jacket according to claim 1, wherein, The inner wall of the intercommunication groove (13) is provided with circular array distributed exhaust holes (14) which are communicated with the inside of the heating box (1).

4. A heat-shrinkable device for cable jacket according to claim 1, wherein, Both sides of the heating box (1) are welded with shunt pipes (12), the shunt pipes (12) are communicated with the inside of the intercommunication groove (13), the other end of the shunt pipe (12) is connected with the exhaust end of the hot air blower (11), the lower end of the inner wall of the heating box (1) is screwed with a return pipe (17), and the other end of the return pipe (17) is connected with the air inlet end of the hot air blower (11).

5. A heat-shrinkable device for cable jacket according to claim 1, wherein, The inner wall of the connecting sleeve (2) is fitted with a bearing (22) on one side, the inner ring of the bearing (22) is fitted on the outside of the heating box (1), and the connecting sleeve (2) is rotatably connected with the heating box (1) through the bearing (22).

6. A heat-shrinkable device for cable jacket according to claim 1, wherein, The end of the guide rod (3) is screwed with a limiting disc (31), the limiting disc (31) is located outside the connecting sleeve (2), and the inner wall of the movable hole (23) and the outer wall of the guide rod (3) are designed in rectangular shape.

7. A heat-shrinkable device for cable jacket according to claim 1, wherein, The outer side of the guide rod (3) is provided with a supporting spring (33), and the two ends of the supporting spring (33) are respectively in contact with the inner wall of the connecting sleeve (2) and the outer wall of the fixed block (32). The fixed block (32) is elastically connected with the inner wall of the connecting sleeve (2) through the supporting spring (33).

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