A cable outer jacketing apparatus

Abstract

This utility model relates to the field of cable production technology, and in particular to a cable outer sheath coating device, including an extruder and a coating mold. The cable to be coated passes through the coating mold and is then coated with an outer sheath. The coated cable enters a cooling module for cooling. The cooling module includes: a housing with an inlet and an outlet, and an internal cooling chamber through which the cable enters and exits; a spray assembly located on the side of the cooling chamber near the inlet and at the top of the cooling chamber; a guide assembly including at least two first guide shafts and an adjustment mechanism, the adjustment mechanism causing the first guide shafts to move up and down and / or horizontally, thereby changing the relative positions of the first guide shafts; and a purging assembly located on the side of the cooling chamber near the outlet. This utility model can adapt to different specifications of cables and outer sheaths while ensuring cooling effect, and has good adaptability and practicality.

Description

Technical Field

[0001] This utility model relates to the field of cable production technology, and in particular to a cable outer sheath covering device. Background Technology

[0002] The cable outer sheath is the non-metallic protective structure wrapped around the outermost layer of the cable, primarily serving functions such as mechanical protection, environmental isolation, and electrical assistance. In the cable production process, the outer sheath coating is one of the core processes, and the quality of this coating significantly affects the final quality of the finished cable.

[0003] Currently, cable outer sheaths are primarily coated using extrusion molding followed by cooling. Existing cooling processes mainly employ water cooling, requiring the injection-molded cable to be immersed in a cooling tank for drying and then wound up. However, this method requires significant space and consumes large volumes of cooling water, necessitating constant water level maintenance, resulting in high costs. Coating equipment using spray or air cooling methods has also emerged, improving cooling efficiency while increasing integration. However, this type of equipment cannot adjust to different cable sheath thicknesses, potentially leading to insufficient cooling and ultimately poor coating quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cable outer sheath covering device to solve the problem of poor covering quality caused by the high maintenance cost or inability to adjust the existing cable outer sheath covering production process.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a cable outer sheath coating device, including an extruder and a coating mold, the coating mold being set at the outlet end of the extruder, the extruder being connected to the coating mold, the cable to be coated being coated with an outer sheath after passing through the coating mold, the coated cable entering a cooling module for cooling, the cooling module including: The housing has an inlet and an outlet, and an internal cooling chamber. Cables enter and exit the cooling chamber through the inlet and outlet. The spray assembly is located on the side of the cooling chamber near the feed inlet and at the top of the cooling chamber; A guide assembly includes at least two first guide shafts and an adjustment mechanism. The first guide shafts are distributed vertically at intervals and are disposed between the inlet and the outlet. The adjustment mechanism is disposed at one end of one of the first guide shafts. The adjustment mechanism causes the first guide shaft to move up and down and / or horizontally, thereby changing the relative position of the first guide shafts to each other. The purging assembly is located on the side of the cooling chamber near the discharge port.

[0006] In one embodiment, the adjustment mechanism includes a drive shaft and a locking member. The drive shaft is located at the center of the first guide shaft. At least one end of the drive shaft passes through the housing and extends out of the cooling cavity. The locking member is sleeved on the end of the drive shaft that extends out of the cooling cavity. The inner wall of the housing is provided with guide grooves at both ends of the drive shaft, and the drive shaft slides along the guide grooves.

[0007] In one embodiment, the guide groove is generally arc-shaped.

[0008] In one embodiment, the guide assembly further includes a drive mechanism, which includes a drive motor and a rotating link. One end of the rotating link is connected to the drive motor for transmission, and the other end of the rotating link is hinged to one end of the drive shaft extending outside the cooling cavity. The drive motor drives the rotating link to rotate, thereby causing the drive shaft to slide along the guide groove.

[0009] In one embodiment, a locking element is disposed between the rotating link and the housing.

[0010] In one embodiment, the spray assembly includes a spray nozzle and a closing plate. The closing plate has a liquid flow channel corresponding to the spray nozzle. The closing plate is connected to a drive motor via a gear set. The drive motor drives the closing member to move and change the degree of overlap between the liquid flow channel and the spray nozzle, thereby controlling the spray volume of the spray assembly.

[0011] In one embodiment, the guide assembly further includes a fixed shaft disposed below the inlet or outlet, the fixed shaft guiding the cable into or out of the cooling cavity; the highest point of the fixed shaft is not lower than the lowest point of the inlet or outlet.

[0012] In one embodiment, the guiding assembly further includes a second guide shaft, which is disposed on the side of the first guide shaft near the discharge port and located between the first guide shaft and the fixed shaft.

[0013] In one embodiment, two second guide shafts are arranged vertically, and purging components are arranged on the upper and lower sides of the cable. The airflow direction of at least one set of purging components is parallel to the line connecting the axes of the two second guide shafts.

[0014] In one embodiment, a manifold assembly is also provided at the bottom of the cooling chamber. The manifold assembly is used to receive the coolant sprayed by the spray assembly and to transport the coolant back to the spray assembly.

[0015] The beneficial effects of this utility model are as follows: Conventional cable outer sheath covering equipment uses an extruder and a cooling water tank for outer sheath covering and cooling. Although the cooling water tank has a better cooling effect, it requires a large amount of cooling water, resulting in serious waste. This invention uses a spray assembly and a purging assembly to simultaneously perform liquid cooling and air cooling on the cable, which can control the amount of cooling water used. While ensuring the cooling effect, it can effectively reduce water consumption, lower operating costs, and reduce the space required for the equipment.

[0016] Different thicknesses of outer sheaths require different amounts of heat exchange. Traditional cooling water tanks actually provide excessive cooling. While this invention employs spray liquid cooling and air cooling, it cannot adapt to the production needs of different products if adjustments cannot be made based on the thickness and diameter of the cable's outer sheath. Therefore, this invention incorporates a guiding component within the cooling module. By adjusting the relative positions of the two first guide shafts, the cable's transport path and time within the cooling module are altered, thereby increasing or decreasing the heat exchange within the module. This allows the invention to adapt to different cable specifications and outer sheaths while maintaining effective cooling, effectively improving its adaptability and practicality. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a top view of an embodiment of the present invention; Figure 3 This is a schematic diagram of the cooling module in one embodiment of the present invention; Figure 4 This is a schematic diagram of the connection structure between the drive shaft and the housing in one embodiment of the present invention.

[0019] Label Explanation: 1. Cooling module; 11. Housing; 111. Cooling cavity; 112. Guide slide; 12. Spray assembly; 121. Spray nozzle; 122. Closing plate; 123. Gear set; 13. Guide assembly; 131. First guide shaft; 132. Adjustment mechanism; 1321. Drive shaft; 1322. Locking element; 1323. Drive motor; 1324. Rotating connecting rod; 133. Fixed shaft; 134. Second guide shaft; 14. Blowing assembly; 15. Combining assembly; 2. Cable; 3. Extruder; 4. Covering mold. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] Please refer to Figures 1 to 4 A cable outer sheath coating device includes an extruder 3 and a coating mold 4. The coating mold 4 is located at the outlet end of the extruder 3, and the extruder 3 is connected to the coating mold 4. After the cable 2 to be coated passes through the coating mold 4, the outer sheath is coated. The coated cable enters a cooling module 1 for cooling. The cooling module 1 includes: The housing 11 has an inlet and an outlet, and has a cooling chamber 111 inside. The cable 2 enters and exits the cooling chamber 111 through the inlet and outlet. The spray assembly 12 is disposed on the side of the cooling chamber 111 near the feed inlet and is located at the top of the cooling chamber 111; The guide assembly 13 includes at least two first guide shafts 131 and an adjustment mechanism 132. The first guide shafts 131 are distributed vertically at intervals and are disposed between the feed inlet and the discharge outlet. The adjustment mechanism 132 is disposed at one end of one of the first guide shafts 131. The adjustment mechanism 132 causes the first guide shafts 131 to move up and down and / or horizontally, thereby changing the relative positions of the first guide shafts 131 to each other. The purging assembly 14 is located on the side of the cooling chamber 111 near the discharge port.

[0023] Specifically, the spray assembly 12 is connected to an external water supply system, and the purging assembly 14 is either a blower module or connected to an external compressed gas system. Those skilled in the art can adjust the spray assembly 12 and the purging assembly 14 as needed, without making specific limitations.

[0024] Since the first guide shaft 131 needs to receive and change the direction of the cable 2, it needs to rotate along with the cable 2 during actual operation. Therefore, the adjustment mechanism 132 needs to adjust the position of the first guide shaft 131 without interfering with its operation. The adjustment mechanism 132 includes a drive shaft 1321 and a locking member 1322. The drive shaft 1321 is located at the axis of the first guide shaft 131. At least one end of the drive shaft 1321 passes through the housing 11 and extends to the outside of the cooling cavity 111. The locking member 1322 is sleeved on the end of the drive shaft 1321 that extends to the outside of the cooling cavity 111. The inner wall of the housing 11 is provided with guide grooves 112 at both ends of the drive shaft 1321, and the drive shaft 1321 slides along the guide grooves 112. Specifically, the guide groove 112 at the non-extended end of the drive shaft 1321 does not penetrate the housing 11, allowing the non-extended end of the drive shaft 1321 to slide within the housing 11, while the guide groove 112 at the extended end of the drive shaft 1321 is a through groove, allowing the extended end of the drive shaft 1321 to slide normally.

[0025] Preferably, the two ends of the drive shaft 1321 and the first guide shaft 131 are connected by ball bearings to ensure that the first guide shaft 131 can rotate normally.

[0026] Specifically, the locking element 1322 can be a sleeve with internal threads. The end of the drive shaft 1321 is threaded corresponding to the locking element 1322. The operator can adjust the degree of contact between the locking element 1322 and the housing 11 by rotating the locking element 1322, thereby locking or loosening it.

[0027] Preferably, the locking element 1322 has a handle on its outer edge to facilitate rotation and adjustment by the operator.

[0028] If the guide chute 112 were a vertical straight line, the weight of the first guide shaft 131 would need to be borne by the friction between the locking element and the housing 11. During use, mechanical vibration could easily cause the first guide shaft 131 to loosen and fall off, disrupting normal production. Therefore, the guide chute 112 is generally arc-shaped. The arc-shaped guide chute 112 can provide partial support for the first guide shaft 131, effectively preventing it from loosening and ensuring the overall stability of the device. Simultaneously, the arc-shaped guide chute 112 makes the displacement trajectory of the first guide shaft 131 arc-shaped, enabling simultaneous lifting and horizontal movement. This allows for faster changes in the distance between the two first guide shafts 131, resulting in a rapid improvement in the condensation effect.

[0029] If the adjustment operation requires manual operation, the guide assembly 13 also includes a drive mechanism to facilitate the adjustment by the operator. The drive mechanism includes a drive motor 1323 and a rotating connecting rod 1324. One end of the rotating connecting rod 1324 is connected to the drive motor 1323 for transmission, and the other end of the rotating connecting rod 1324 is hinged to one end of the drive shaft 1321 that extends to the outside of the cooling cavity 111. The drive motor 1323 drives the rotating connecting rod 1324 to rotate, thereby causing the drive shaft 1321 to slide along the guide groove 112.

[0030] After the drive mechanism is set up, the drive shaft 1321 is driven by the rotating connecting rod 1324, and the drive shaft 1321 is actually limited by the rotating connecting rod 1324. However, due to mechanical vibration and errors, the locking member 1322 is still needed to lock the drive shaft 1321 a second time to further ensure the stability of the device and production safety. In order to prevent the locking member 1322 from interfering with the operation of the rotating connecting rod 1324, the locking member 1322 is set between the rotating connecting rod 1324 and the housing 11, which can prevent the rotating connecting rod 1324 from being bent by the locking member 1322 and ensure the normal operation of the device.

[0031] By changing the transport path of cable 2, the heat exchange of cable 2 within the cooling module 1 can be altered to some extent. However, the transport path is only one factor in achieving the cooling effect; the liquid spray volume also significantly impacts the final cooling effect. Adjusting only the transport path has a limited impact on the cooling effect. Therefore, in this embodiment, the spray assembly 12 includes a spray nozzle 121 and a closing plate 122. The closing plate 122 has a liquid flow channel corresponding to the spray nozzle 121. The closing plate 122 is connected to the drive motor 1323 via a gear set 123. The drive motor 1323 moves the closing member to change the degree of overlap between the liquid flow channel and the spray nozzle 121, thereby controlling the spray volume of the spray assembly 12. Specifically, the top of the cooling chamber 111 has a coolant chamber, and the bottom of the coolant chamber has a spray nozzle 121. The closing plate 122 is positioned above the spray nozzle 121. An external liquid supply system is connected to the coolant chamber, and the coolant enters the spray nozzle 121 through the liquid flow channel and is sprayed into the cooling chamber 111.

[0032] Preferably, the closing plate 122 can be equipped with a separate drive motor 1323 or be connected to the drive motor 1323 near the top of the cooling cavity 111 to avoid excessively long transmission paths and reduce the occurrence of transmission problems.

[0033] If the cable 2 is supported solely by the first guide shaft 131, the angle between the cable 2 and the feed inlet will frequently change due to the relative change in the position of the first guide shaft 131. As a result, the uncooled outer sheath is easily scratched by the feed inlet, leading to damage to the outer sheath and affecting the quality of the finished product. Therefore, the guide assembly 13 also includes a fixed shaft 133, which is located below the feed inlet or outlet. The fixed shaft 133 guides the cable 2 into or out of the cooling chamber 111. The highest point of the fixed shaft 133 is not lower than the lowest point of the feed inlet or outlet. The fixed shaft 133 ensures that the cable 2 enters and exits the cooling module 1 horizontally, guaranteeing that the outer sheath is not damaged before or after cooling.

[0034] In this embodiment, the guide assembly 13 further includes a second guide shaft 134, which is disposed on the side of the first guide shaft 131 near the discharge port and located between the first guide shaft 131 and the fixed shaft 133. The second guide shaft 134 is used to adjust the path of the cable 2 after spraying, so that the path of the cable 2 to be output remains stable, thereby stably receiving the purging of the purging assembly 14 and further completing the cooling.

[0035] After being sprayed, cable 2 undergoes initial cooling. To prevent coolant from being carried out of cooling module 1, two second guide shafts 134 are arranged vertically. Blowing assemblies 14 are positioned on the upper and lower sides of cable 2, with at least one set of blowing assemblies 14 having an airflow direction parallel to the line connecting the axes of the two second guide shafts 134. This ensures the airflow direction of the blowing assemblies 14 is opposite to the cable 2's transport direction, maximizing coolant removal while cooling, minimizing coolant loss, and keeping cable 2 dry.

[0036] Preferably, the intersection point of the airflow directions of the two sets of purging components 14 is at the same height as the center of the inlet or outlet. This arrangement causes the air output by the purging components 14 to form a vortex in the center, enhancing the heat exchange effect between the airflow output by the purging components 14 and the cable 2.

[0037] More preferably, the housing 11 near the feed inlet is provided with an air outlet, and the air outlet is provided with a barrier membrane to prevent the sprayed liquid from flowing out.

[0038] In this embodiment, a manifold assembly 15 is also provided at the bottom of the cooling chamber 111. The manifold assembly 15 is used to receive the coolant sprayed by the spray assembly 12 and to transport the coolant back to the spray assembly 12. Preferably, the manifold assembly 15 gradually extends from the side of the cooling chamber 111 near the outlet to the side near the inlet.

[0039] Although this document uses terms such as cooling module, housing, and cooling cavity frequently, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cable outer sheath coating device, comprising an extruder (3) and a coating mold (4), wherein the coating mold (4) is disposed at the outlet end of the extruder (3), the extruder (3) is connected to the coating mold (4), the cable (2) to be coated is coated with an outer sheath after passing through the coating mold (4), and the coated cable (2) enters a cooling module (1) for cooling, characterized in that, The cooling module (1) includes: The housing (11) has an inlet and an outlet, and has a cooling chamber (111) inside. The cable (2) enters and exits the cooling chamber (111) through the inlet and the outlet. The spray assembly (12) is disposed on the side of the cooling chamber (111) near the feed inlet and is located at the top of the cooling chamber (111); The guide assembly (13) includes at least two first guide shafts (131) and an adjustment mechanism (132). The first guide shafts (131) are distributed vertically at intervals and are disposed between the feed inlet and the discharge outlet. The adjustment mechanism (132) is disposed at one end of one of the first guide shafts (131). The adjustment mechanism (132) causes the first guide shaft (131) to move up and down and / or horizontally, thereby changing the relative position of the first guide shafts (131) to each other. The purging assembly (14) is disposed on the side of the cooling chamber (111) near the discharge port.

2. The cable outer sheath covering device according to claim 1, characterized in that: The adjustment mechanism (132) includes a drive shaft (1321) and a locking member (1322). The drive shaft (1321) is located at the axis of the first guide shaft (131). At least one end of the drive shaft (1321) passes through the housing (11) and extends to the outside of the cooling cavity (111). The locking member (1322) is sleeved on the end of the drive shaft (1321) that extends to the outside of the cooling cavity (111). The inner wall of the housing (11) is provided with guide grooves (112) at both ends of the drive shaft (1321), and the drive shaft (1321) slides along the guide grooves (112).

3. The cable outer sheath covering device according to claim 2, characterized in that: The guide groove (112) is generally arc-shaped.

4. The cable outer sheath covering device according to claim 3, characterized in that: The guide assembly (13) further includes a drive mechanism, which includes a drive motor (1323) and a rotating link (1324). One end of the rotating link (1324) is connected to the drive motor (1323) for transmission, and the other end of the rotating link (1324) is hinged to one end of the drive shaft (1321) extending outside the cooling cavity (111). The drive motor (1323) drives the rotating link (1324) to rotate, thereby causing the drive shaft (1321) to slide along the guide groove (112).

5. The cable outer sheath covering device according to claim 4, characterized in that: The locking element (1322) is located between the rotating connecting rod (1324) and the housing (11).

6. The cable outer sheath covering device according to claim 4, characterized in that: The spray assembly (12) includes a spray nozzle (121) and a closing plate (122). The closing plate (122) has a liquid flow channel corresponding to the spray nozzle (121). The closing plate (122) is connected to the drive motor (1323) through a gear set (123). The drive motor (1323) drives the closing plate to move and change the degree of overlap between the liquid flow channel and the spray nozzle (121), thereby controlling the spray volume of the spray assembly (12).

7. The cable outer sheath covering device according to claim 1, characterized in that: The guide assembly (13) further includes a fixed shaft (133), which is located below the feed inlet or the discharge outlet. The fixed shaft (133) guides the cable (2) into or out of the cooling cavity (111). The highest point of the fixed shaft (133) is not lower than the lowest point of the feed inlet or the discharge outlet.

8. The cable outer sheath covering device according to claim 7, characterized in that: The guide assembly (13) further includes a second guide shaft (134), which is disposed on the side of the first guide shaft (131) near the discharge port and is located between the first guide shaft (131) and the fixed shaft (133).

9. The cable outer sheath covering device according to claim 8, characterized in that: The second guide shaft (134) is distributed vertically and there are two of them. The purging assembly (14) is arranged on the upper and lower sides of the cable (2). The wind direction of at least one set of the purging assembly (14) is parallel to the line connecting the axes of the two second guide shafts (134).

10. The cable outer sheath covering device according to claim 1, characterized in that: The bottom of the cooling chamber (111) is also provided with a manifold assembly (15), which is used to receive the coolant sprayed by the spray assembly (12) and transport the coolant back to the spray assembly (12).

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