Tow structure and cable extruder

Abstract

The utility model discloses a kind of traction structure and cable extruding machine, traction structure includes flexible waterproof part, locking part and moving part;Flexible waterproof part has the waterproof cavity of one side opening, and waterproof cavity is used for the head of cable to be inserted;Locking part connects flexible waterproof part, for locking flexible waterproof part in cable, and when locking, make the side wall of waterproof cavity adhere to cable, and flexible waterproof part can be unlocked from cable;Moving part is used for connecting the head of cable, and can drive cable to move.This scheme can immerse the front end of cable in water cooling tank completely while realizing waterproof to the head of cable, and can guarantee the immersion depth of the front end of cable consistent, improve the cooling efficiency and uniformity of the front end of cable, to improve the quality of the front end of cable, avoid loss due to uneven cooling.

Description

Technical Field

[0001] This utility model relates to the field of cable extrusion machine technology, specifically to a traction structure and a cable extrusion machine. Background Technology

[0002] A typical wire and cable extrusion machine consists of a pay-off frame, a feed frame, a main unit, a cooling water tank, a drying unit, a printing machine, a tracked traction system, a take-up and cable delivery machine, and a temperature control electrical control cabinet. The conductor is insulated as it passes through the extrusion head of the main unit and undergoes initial cooling through cooling channels at the tail end of the extrusion head. After the cable head is completely extruded from the extrusion head, a traction device pulls the cable head to the cooling water tank for complete cooling.

[0003] CN110648802A discloses a cable head hook device for extruding the sheath of a cable extruder. In order to prevent water from entering the cable head when it is cooled in the cooling water tank, the cable head is lifted above the water surface by the hook to prevent the cable head from contacting the water and to immerse the rear part of the cable in the water. Then the hook is driven to slide along the track until the cable head is pulled to the position of the next process.

[0004] However, in this patent, in order to prevent water from entering the cable head when it is cooled in the cooling water tank, the front end of the cable is lifted upward by a hook. This causes the immersion depth of the cable head to gradually become shallower upward, and even partially exposed to the air. This results in uneven cooling of the cable head and easily reduces the quality of the cable head. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a traction structure and cable extruder to solve the technical problem in the prior art where, in order to prevent water from entering the cable head when cooling in the cooling water tank, the front end of the cable is lifted upward by a hook, which causes the immersion depth of the cable head to gradually become shallower upward, and even partially exposed to the air, resulting in uneven cooling of the cable head and easy reduction of the quality of the cable head.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] In a first aspect, this utility model provides a traction structure, comprising:

[0008] A flexible waterproof section having a waterproof cavity with an opening on one side, the waterproof cavity being used for the cable head to extend into;

[0009] A locking part, connected to the flexible waterproof part and disposed around the waterproof cavity, is used to lock the flexible waterproof part to the cable, and when locked, causes the sidewall of the waterproof cavity to conform to the cable, and can unlock the flexible waterproof part from the cable; and

[0010] A movable part is used to connect the head of the cable and to drive the cable to move.

[0011] In some embodiments, the locking part includes a locking rope wrapped around the sidewall of the waterproof cavity and detachably binding the flexible waterproof part to the cable.

[0012] In some embodiments, the locking part further includes a mounting member having a rope passage;

[0013] The locking rope has a fixed end, a locking section, and a movable end connected in sequence. Both the fixed end and the movable end pass through the rope threading channel. The fixed end is fixed to the mounting component. The locking section is located on the side of the rope threading channel away from the fixed end and surrounds the locking channel. The locking channel allows the cable covered with the flexible waterproof part to extend into. The movable end can move relative to the mounting component and adjust the inner diameter of the locking channel.

[0014] In some embodiments, the locking part further includes a driving member, which is mounted on the mounting member and connected to the movable end, for driving the movable end to move and adjusting the inner diameter of the locking channel.

[0015] In some embodiments, the driving component includes a drive motor mounted on the mounting component and spaced above the rope threading channel, with its rotating end connected to the movable end, and capable of winding or unwinding the locking rope when rotating.

[0016] In some embodiments, the mounting member is slidably mounted in a water-cooling tank, and one of the inner walls of the water-cooling tank is provided with a slider, while the other is provided with a groove for the slider to slide in, the groove extending along the discharge direction of the cable.

[0017] In some embodiments, the moving part includes a winding rope and a moving motor. One end of the winding rope is connected to the mounting member and connected to the cable via the mounting member and the locking rope. The other end is connected to the rotating end of the moving motor. When the rotating end of the moving motor rotates, it winds up the winding rope and drives the mounting member to slide.

[0018] In some embodiments, the flexible waterproof portion includes a flexible waterproof membrane capable of enclosing the waterproof cavity.

[0019] In some embodiments, the sidewall of the waterproof cavity is provided with a plurality of sealing protrusions, the plurality of sealing protrusions being spaced apart along the direction close to the opening of the waterproof cavity, and each sealing protrusion extending circumferentially along the waterproof cavity.

[0020] In addition, this utility model also provides a cable extrusion machine, which includes the traction structure described in any of the above.

[0021] Compared with the prior art, the traction structure provided by this utility model, after the cable head is initially cooled and extruded from the extrusion head of the extruder, is fed into the waterproof cavity through the opening of the flexible waterproof part, so that the flexible waterproof part is fitted onto the outer periphery of the cable head. Then, the flexible waterproof part is locked to the cable head by the locking part. Based on the flexible waterproof part's softness, under the pressure of the locking part, the sidewall of the waterproof cavity is tightly fitted to the outer periphery of the cable head, ensuring the sealing of the cable head. Then, the moving part sends the entire cable head into the water-cooling tank for cooling until the cable head is moved to the next process position. Finally, the locking part unlocks the flexible waterproof part from the cable to remove the flexible waterproof part, and the cable is sent to the next process.

[0022] Thus, this solution not only waterproofs the cable head but also completely immerses the cable tip in the water-cooling tank, ensuring a consistent immersion depth and improving the cooling efficiency and uniformity of the cable tip. This, in turn, enhances the quality of the cable tip and prevents losses caused by uneven cooling. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the cable extruder provided in this embodiment of the present invention when the flexible waterproof part is not shown;

[0024] Figure 2 yes Figure 1 Schematic diagram of the central locking part;

[0025] Figure 3 yes Figure 2 A schematic diagram of the mounting components and drive components;

[0026] Figure 4 This is a schematic diagram of the flexible waterproof part in one embodiment;

[0027] Figure 5 yes Figure 2 A partial schematic diagram of the locking rope;

[0028] Figure 6 This is a schematic diagram of the flexible waterproof part in another embodiment.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Flexible waterproof section; 1a. Waterproof cavity; 11. Flexible waterproof membrane; 12. Sealing protrusion; 2. Locking part; 21. Locking rope; 211. Fixed end; 212. Locking section; 212a. Locking channel; 213. Moving end; 22. Mounting component; 22a. Rope threading channel; 22b. Guide channel; 23. Driving component; 3. Moving part; 31. Moving motor; 32. Winding rope; 4. Water cooling tank; 5. Extrusion head. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] To address the technical problem in existing technologies where, to prevent water ingress during cooling in a water bath, the cable's end is suspended upwards via a hook, resulting in a progressively shallower immersion depth and even partial exposure to air, leading to uneven cooling and reduced cable quality, this invention provides a traction structure. This structure not only waterproofs the cable end but also completely immerses it in the water-cooling bath, ensuring a consistent immersion depth. This improves cooling efficiency and uniformity, thereby enhancing cable quality and preventing losses due to uneven cooling.

[0033] It should be noted that the traction structure described in this utility model is used in, but not limited to, cable extruders, etc. For ease of explanation, this utility model only uses the application of the traction structure in a cable extruder as an example. The principle of the traction structure applied to other types of equipment is essentially the same as that applied to a cable extruder, and will not be described in detail here.

[0034] Please see Figures 1 to 4 , Figures 1 to 4 This is a schematic diagram of the traction structure in one embodiment of the present invention. The traction structure includes a flexible waterproof part 1, a locking part 2, and a moving part 3. The flexible waterproof part 1 has a waterproof cavity 1a with an opening on one side, which is used for the cable head to extend into. The locking part 2 is connected to the flexible waterproof part 1 and is arranged around the waterproof cavity 1a. It is used to lock the flexible waterproof part 1 to the cable, and when locked, the side wall of the waterproof cavity 1a is attached to the cable, and the flexible waterproof part 1 can be unlocked from the cable. The moving part 3 is used to connect the cable head and can drive the cable to move in the water-cooling tank 4.

[0035] In the traction structure provided by this utility model, after the cable head is initially cooled and extruded by the extrusion head 5 of the extruder, the cable head is fed into the waterproof cavity 1a through the opening of the flexible waterproof part 1, so that the flexible waterproof part 1 is fitted onto the outer periphery of the cable head. Then, the flexible waterproof part 1 is locked to the cable head by the locking part 2. Based on the flexible characteristics of the flexible waterproof part 1, under the pressure of the locking part 2, the sidewall of the waterproof cavity 1a is tightly fitted to the outer periphery of the cable head, ensuring the sealing of the cable head. Then, the moving part 3 sends the entire cable head into the water cooling tank 4 for cooling until the cable head is moved to the position of the next process. Then, the locking part 2 unlocks the flexible waterproof part 1 from the cable to remove the flexible waterproof part 1, and the cable is sent to the next process.

[0036] Thus, this solution not only waterproofs the cable head but also completely immerses the cable tip in the water-cooling tank 4, ensuring a consistent immersion depth and improving the cooling efficiency and uniformity of the cable tip. This, in turn, improves the quality of the cable tip and prevents losses caused by uneven cooling.

[0037] It should be noted that the locking part 2 can be configured as a detachable clamp, a locking elastic band, or other forms.

[0038] In one embodiment, the locking part 2 includes a locking rope 21, which is wrapped around the side wall of the waterproof cavity 1a and detachably binds the flexible waterproof part 1 to the cable.

[0039] In this embodiment, the locking part 2 is equipped with a locking rope 21, which is used to bind the flexible waterproof part 1 to the head of the cable. The locking rope 21 can also be removed, making the operation simple and convenient, and the structure is simple. It also allows the flexible waterproof part 1 to fit well against the head of the cable. It should be noted that in one embodiment, the locking part 2 includes both a locking rope 21 and a locking elastic band. The locking elastic band provides auxiliary fastening to the flexible waterproof part 1, and the locking rope 21 provides complete fastening, further improving convenience.

[0040] In one embodiment, please refer to Figures 2 to 5 The locking part 2 also includes a mounting member 22, which has a rope passage 22a. The locking rope 21 has a fixed end 211, a locking section 212 and a movable end 213 connected in sequence. Both the fixed end 211 and the movable end 213 pass through the rope passage 22a. The fixed end 211 is fixed to the mounting member 22. The locking section 212 is located on the side of the rope passage 22a away from the fixed end 211 and surrounds the locking passage 212a. The locking passage 212a allows the cable covered with the flexible waterproof part 1 to extend into. The movable end 213 can move relative to the mounting member 22 and adjust the inner diameter of the locking passage 212a.

[0041] In this embodiment, a portion of the locking section 212 extends to one side of the rope-threading channel 22a and is bent to form a locking channel 212a. Thus, when fixing the flexible waterproof part 1 to the cable head, it is only necessary to insert the cable head with the flexible waterproof part 1 into the locking channel 212a and then tighten the movable end 213 to tighten the locking channel 212a, thereby achieving a tight fit between the flexible waterproof part 1 and the outer wall of the cable and further improving convenience.

[0042] Meanwhile, the inner diameter of the locking channel 212a can be adjusted by the tensioning movable end 213, thus making it suitable for cables of different sizes, improving versatility, and offering a simple structure and low cost. It should be noted that in this design, the inner diameter of the rope-threading channel 22a is slightly larger than twice the outer diameter of the locking section 212. This ensures that the bent locking section 212 can slide within the rope-threading channel 22a while also reducing the gap between them, ensuring that all parts of the flexible waterproof part 1 fit snugly against the outer wall of the cable.

[0043] In one embodiment, the locking part 2 further includes a driving member 23, which is mounted on the mounting member 22 and connected to the movable end 213, for driving the movable end 213 to move and adjusting the inner diameter of the locking channel 212a.

[0044] In this embodiment, a driving component 23 is provided corresponding to the movable end 213. The driving component 23 drives the movable end 213 to move, thereby tightening or loosening the locking channel 212a, improving automation and reducing the labor intensity of operators. It should be noted that the above-mentioned mounting component 22 can be set in the form of a mounting plate, a mounting base, or a mounting bracket. Specifically, in this solution, the mounting component 22 is set in the form of a mounting plate.

[0045] It should be noted that the drive component 23 can be configured as a linear motor, hydraulic rod, electric actuator or other form, and the movable end 213 can be connected to the moving end of the above mechanism.

[0046] In one embodiment, the drive unit 23 includes a drive motor, which is spaced above the rope threading channel 22a and has its rotating end connected to the movable end 213, and can wind up or unwind the locking rope 21 when rotating.

[0047] In this embodiment, the drive motor is positioned above the rope threading channel 22a, allowing the portion of the mounting component 22 with the rope threading channel 22a to be submerged in the water-cooling tank 4, thus ensuring that the front end of the cable is completely submerged in the water. Simultaneously, with the drive motor above the water surface, tightening or loosening the locking channel 212a only requires winding or unwinding the movable end 213 of the locking rope 21, preventing the drive motor from contacting water and extending its service life. It should be noted that in this design, the mounting component 22 also has two guide channels 22b for guiding the locking section 212 to the output end connected to the drive motor.

[0048] In one embodiment, the mounting member 22 is slidably mounted in the water-cooling tank 4, and one of the inner walls of the water-cooling tank 4 is provided with a slider, and the other is provided with a groove for the slider to slide in, the groove extending along the discharge direction of the cable.

[0049] In this embodiment, a slider and a groove are used to guide the stable movement of the mounting component 22 within the water-cooling tank 4, thereby ensuring the stable movement of the cable within the water-cooling tank 4 and further improving the cooling effect on the cable. Specifically, in this design, the slider is formed on the mounting component 22, and the groove is formed on the side wall of the water-cooling tank 4.

[0050] It should be understood that, in order to facilitate the handling of the mounting component 22, the two ends of the slide groove extending in the direction of extension are provided with openings facing upwards, so that the mounting component 22 can be handled through the openings at both ends of the slide groove.

[0051] It should be noted that the moving part 3 can be configured as a linear motor and a locking mechanism, a hydraulic cylinder and a locking mechanism, or other forms, as long as it can fix the cable and drive the cable to move in the water-cooling tank 4.

[0052] In one embodiment, the moving part 3 includes a winding rope 32 and a moving motor 31. One end of the winding rope 32 is connected to the mounting member 22 and a cable is connected via the mounting member 22 and the locking rope 21. The other end is connected to the rotating end of the moving motor 31. When the rotating end of the moving motor 31 rotates, it winds up the winding rope 32 and drives the mounting member 22 to slide.

[0053] In this embodiment, the mobile motor 31 is installed at the position of the next process, and the installation component 22 is pulled by winding the winding rope 32, thereby driving the cable head closer to the next process, resulting in a stable and reliable structure.

[0054] It should be noted that the flexible waterproof part 1 can be configured as a flexible waterproof sleeve, a flexible waterproof seat with a waterproof cavity 1a, or other forms. Furthermore, it should be understood that since the cable extruded from the self-extrusion head 5 still has a certain temperature, the flexible waterproof part 1 is made of a high-temperature resistant flexible waterproof material to prevent it from being burned. Correspondingly, the locking rope 21 is also made of a high-temperature resistant material. Specifically, the locking rope 21 in this case is a flexible steel wire.

[0055] In one embodiment, the flexible waterproof part 1 includes a flexible waterproof membrane 11, which can be configured to form a waterproof cavity 1a.

[0056] In this embodiment, when waterproofing the cable head, the flexible waterproof membrane 11 is directly wrapped around the cable head and then locked with the locking rope 21. This method is simple, convenient, and cost-effective. Specifically, the flexible waterproof membrane 11 can be a polytetrafluoroethylene (PTFE) based composite membrane, polyvinylidene fluoride (PVDF) material, or a composite membrane with a nano-ceramic anti-stick coating. The flexible waterproof membrane 11 made of the above materials has both high-temperature resistance and good anti-sticking effect, effectively preventing the flexible waterproof membrane 11 from sticking to the cable head.

[0057] In one embodiment, please refer to Figure 6 The sidewall of the waterproof cavity 1a is provided with a plurality of sealing protrusions 12, which are spaced apart along the direction close to the opening of the waterproof cavity 1a, and each sealing protrusion 12 extends circumferentially along the waterproof cavity 1a.

[0058] In this embodiment, when the locking rope 21 locks the flexible waterproof part 1, multiple sealing protrusions 12 are arranged in an alternating pattern and fit tightly against the outer wall of the cable, further improving the sealing performance of the cable head.

[0059] Furthermore, this utility model also provides a cable extruder, which includes the traction structure described in any of the above embodiments. It should be noted that the detailed structure of the traction structure of the cable extruder can be referred to the embodiments of the traction structure described above, and will not be repeated here. Since the above-mentioned traction structure is used in the cable extruder of this utility model, the embodiments of the cable extruder of this utility model include all the technical solutions of all the embodiments of the above-mentioned traction structure, and the achieved technical effects are also completely the same, and will not be repeated here.

[0060] It should be noted that, in one embodiment, both the process preceding the extrusion head 5 and the process following the water cooling tank 4 are provided with another traction component. The one located before the extrusion head 5 is the front traction component, used to feed the wire into the extrusion head 5; while the one located after the water cooling tank 4 is the rear traction component, used to guide the cable cooled by the water cooling tank 4 into the next process.

[0061] It should be understood that the specific structures and principles of the front traction and rear traction are the same and are both existing technologies, so they will not be described in detail here. Specifically, in one embodiment, the front traction mainly consists of a motor, two sets of belts, and valves. The motor drives the belts forward, and the valves control the pressure between the two belts. The conductor or cable core to be extruded is clamped between the belts under pressure and moves forward with the belts. The greater the pressure, the tighter the conductor or cable core is squeezed. The main purpose is to hold the conductor or cable core to be extruded, so that the conductor or cable core keeps moving forward under the action of traction force.

[0062] Furthermore, it should be understood that the extrusion head 5 of the extruder contains a die core and die sleeve for extrusion shaping. The temperature is adjusted via the control panel, causing the molten plastic to pass through the die inside the extrusion head 5 and coat the conductor or cable core. The control panel is mainly used to adjust the extrusion temperature, extrusion speed, and forward and backward traction speed, etc. The specific structure and principle are existing technology and will not be elaborated here.

[0063] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail below:

[0064] In this scheme, the mounting component 22 is first removed upwards from the chute opening near the extrusion head 5 in the water-cooling tank 4. Simultaneously, the extrusion head 5 is heated via the control panel to melt the plastic to be extruded. The plastic then coats the conductor or cable core surface through the extrusion head 5. After the cable is extruded from the extrusion head 5, the flexible waterproof membrane 11 is wrapped around the cable head and fed into the locking channel 212a of the locking rope 21. The locking rope 21 is then tightened via the drive component 23 to secure the flexible waterproof membrane 11 to the cable head. The mounting component 22 is then fed into the chute, allowing the cable to cool in the water-cooling tank 4.

[0065] Then, the installation component 22 is moved closer to the next process by the moving motor 31, and the eccentricity of the cable extrusion is adjusted. After adjusting the eccentricity, the speeds of the front traction, extrusion head 5, and rear traction are adjusted to be consistent through the linkage system. When the cable head moves to the position of the water cooling tank 4 near the next process, the installation component 22 is removed again, the flexible waterproof membrane 11 is unlocked from the cable, and the cable is sent to the next process.

[0066] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A traction structure, characterized in that, include: A flexible waterproof section having a waterproof cavity with an opening on one side, the waterproof cavity being used for the cable head to extend into; A locking part is connected to the flexible waterproof part and is disposed around the waterproof cavity. It is used to lock the flexible waterproof part to the cable, and when locked, the side wall of the waterproof cavity is attached to the cable, and the flexible waterproof part can be unlocked from the cable. and A movable part is used to connect the head of the cable and to drive the cable to move.

2. The traction structure of claim 1, wherein, The locking part includes a locking rope that is wrapped around the side wall of the waterproof cavity and detachably binds the flexible waterproof part to the cable.

3. The traction structure of claim 2, wherein, The locking part also includes a mounting component, which has a rope-threading channel; The locking rope has a fixed end, a locking section, and a movable end connected in sequence. Both the fixed end and the movable end pass through the rope threading channel. The fixed end is fixed to the mounting component. The locking section is located on the side of the rope threading channel away from the fixed end and surrounds the locking channel. The locking channel allows the cable covered with the flexible waterproof part to extend into. The movable end can move relative to the mounting component and adjust the inner diameter of the locking channel.

4. The traction structure of claim 3, wherein, The locking part further includes a driving component, which is installed on the mounting component and connected to the movable end, for driving the movable end to move and adjusting the inner diameter of the locking channel.

5. The traction structure of claim 4, wherein, The driving component includes a drive motor, which is mounted on the mounting component and spaced above the rope threading channel. Its rotating end is connected to the movable end, and it can wind up or unwind the locking rope when rotating.

6. The traction structure according to claim 3, characterized in that, The mounting component is slidably mounted in the water-cooling tank, and one of the inner walls of the water-cooling tank is provided with a slider, while the other is provided with a sliding groove for the slider to slide in. The sliding groove extends along the discharge direction of the cable.

7. The traction structure of claim 6, wherein, The moving part includes a winding rope and a moving motor. One end of the winding rope is connected to the mounting component and connected to the cable via the mounting component and the locking rope. The other end is connected to the rotating end of the moving motor. When the rotating end of the moving motor rotates, it winds up the winding rope and drives the mounting component to slide.

8. The traction structure of claim 1, wherein, The flexible waterproof section includes a flexible waterproof membrane, which can be used to enclose and form the waterproof cavity.

9. The traction structure of claim 1, wherein, The sidewall of the waterproof cavity is provided with a plurality of sealing protrusions, which are spaced apart along the direction close to the opening of the waterproof cavity, and each sealing protrusion extends circumferentially along the waterproof cavity.

10. A cable extruder, characterized by Includes the traction structure as described in any one of claims 1-9.

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