Insulation layer wrapping device

Abstract

The utility model provides an improved insulation layer wrapping device. Its symmetrical front fork structure arranged on the upper surface of the base disc constructs a stable wrapping operation space, effectively constrains the radial displacement of the wire core and the wrapping material. At the same time, the through line pipe with an axial through hole in the lower surface of the base disc is integrated with independent first and second threading channels, which respectively direct the cable core and the insulation wrapping material. The transmission mechanism is arranged outside the through line pipe to convey the insulation wrapping material from the second threading channel, thereby solving the separation and synchronous control problem of the conveying path from the source, significantly improving the wrapping coaxiality and thickness uniformity. The device has a simple structure, convenient adjustment, and can adapt to the rapid switching of multiple specifications of cables, and is expected to be widely applied in the field of high-end cable manufacturing.

Description

Technical Field

[0001] This utility model relates to the field of cable insulation layer wrapping technology, and more specifically, to an insulation layer wrapping device. Background Technology

[0002] With the rapid development of power transmission, communication networks, and the new energy industry, cables, as the core carriers of electrical energy and signal transmission, face increasingly stringent performance requirements. Among these requirements, the quality of cable insulation wrapping directly affects the product's voltage withstand capability, aging resistance, and long-term operational reliability. Therefore, efficient and precise insulation wrapping processes and equipment have become key technological aspects in the cable manufacturing industry.

[0003] Traditional cable insulation wrapping equipment typically employs a single-channel wire feeding system or a simple dual-channel collaborative design. However, in actual production, the following significant problems have been exposed: First, the conveying path of the cable core and insulation material is easily affected by factors such as equipment vibration and tension fluctuations, making it difficult to maintain consistent coaxiality between the two. This results in uneven insulation thickness, edge wrinkles, or local misalignment, severely impacting insulation performance. Second, the operating space of existing wrapping devices is mostly an open or semi-enclosed structure, lacking stable guiding constraints for the core and material during the wrapping process. Especially under high-speed wrapping conditions, the core is prone to radial sway, further exacerbating insulation quality fluctuations. Third, some equipment integrates the wire feeding, guiding, and wrapping mechanisms into the same cavity to accommodate both wire feeding and wrapping functions. This leads to complex structures, high maintenance difficulty, and frequent adjustments to multiple sets of components are required when switching between different cable specifications, resulting in low production efficiency.

[0004] Furthermore, with the widespread adoption of ultra-high voltage cables, large-section power cables, and high-frequency communication cables, the market's requirements for insulation wrapping accuracy have shifted from "pass rate" to "consistency." For example, the insulation thickness tolerance of ultra-high voltage cables needs to be controlled within ±0.1mm, and uniformity along the entire length must be guaranteed; the uniformity of the dielectric constant of the insulation layer in high-frequency communication cables directly affects signal transmission delay and loss. Traditional cable feeding and guiding technologies are no longer sufficient to meet the needs of such high-end applications, necessitating the development of a compact, precise, and adaptable insulation wrapping device. Summary of the Invention

[0005] In view of this, and addressing the aforementioned technical pain points, this application proposes an improved insulation wrapping device. It utilizes a symmetrical fork structure on the upper surface of the base plate, consisting of two fork plates and a base plate, to create a stable wrapping operation space, effectively constraining the radial displacement of the cable core and insulation material. Simultaneously, an independent first and second cable-passing channel is integrated within the axially penetrating conduit on the lower surface of the base plate, respectively directionally conveying the cable core and insulation material, thus fundamentally solving the problem of separation and synchronous control of their conveying paths, significantly improving the coaxiality and thickness uniformity of the wrapping. This device has a simple structure, is easy to adjust, and can adapt to rapid switching between multiple cable specifications, and is expected to achieve widespread application in the high-end cable manufacturing field.

[0006] An insulation wrapping device includes: a base plate 4, a fork structure 1 fixed on the upper surface of the base plate 4 for forming a wrapping operation space; a cable guide tube 5 axially penetrating the base plate 4 and placed in the wrapping operation space on the lower surface of the base plate 4, the cable guide tube 5 containing an independent first cable passage 51 and a second cable passage 52 for directional conveying of cable and insulation material respectively, and a transmission mechanism outside the cable guide tube 5 for conveying the insulation material passing through the second cable passage 52.

[0007] Preferably, the first threading channel 51 is a central hollow channel of the threading tube 5, and the second threading channel 52 is composed of an axial groove 53 on the side wall of the threading tube 5 and a cover plate 54 covering the groove 53.

[0008] Preferably, the front fork structure 1 is composed of two symmetrically arranged front fork plates 11 and a bottom plate 12, and the two front fork plates 11 and the bottom plate 12 of the front fork structure 1 are integral castings.

[0009] Preferably, the front fork plate 11 is provided with detachable protective covers 3 on both the front and rear sides along the conveying direction of the insulating packaging material.

[0010] Preferably, the front fork plate 11 is provided with symmetrical counterweights 42 on its sidewalls, and the center of gravity distribution of the counterweights 42 satisfies the dynamic rotational balance condition.

[0011] Preferably, the transmission mechanism includes a third gear 6 sleeved on the outside of the conduit 5, a gear disk 81 meshing with the third gear 6, and a first gear 82 of the linkage gear disk 81; a guide wheel assembly is provided between the two front fork plates 11, the guide wheel assembly includes a main drive wheel 91 and at least one driven wheel 92, the main drive wheel 91 is coaxially fixed with a second gear 83 and meshes with the first gear 82, the rotation of the third gear 6 is transmitted sequentially through the gear disk 81, the first gear 82 and the second gear 83, driving the main drive wheel 91 to convey the insulating packaging material, the gear transmission chain realizes single power source drive conveying and rotation winding, and the modular structure reduces the assembly complexity.

[0012] Preferably, elastic devices 7 are sleeved on the shaft portions at both ends of the main drive wheel 91. One end of the elastic device 7 abuts against the corresponding front fork plate 11, and the other end abuts against the axle shoulder of the main drive wheel 91. The two ends of the main drive wheel 91 are floatingly supported on the front fork plate 11 by the elastic devices 7. When the thickness of the insulating material changes, the main drive wheel 91 is driven to move in a direction perpendicular to the conveying plane. The elastic deformation generates a force opposite to the direction of displacement, so that the clamping force between the main drive wheel 91 and the driven wheel 92 remains dynamically constant, thereby forming an adaptive clamping gap between the main drive wheel 91 and its adjacent driven wheel 92.

[0013] Preferably, the elastic device 7 is one of a compression spring, a disc spring, or an elastic rubber pad.

[0014] Preferably, at least one auxiliary guide wheel 93 is provided at the cable outlet end of the driven wheel 92, and a cable outlet guide wheel is provided on the top of the front fork plate 11. After the insulating material is wound around the guide wheel group, it passes through the auxiliary guide wheel 93 and is then led out by the cable outlet guide wheel.

[0015] Preferably, the base plate 4 is provided with an axial notch 41, and the lower part of the gear plate 81 passes through the notch to mesh with the third gear 6.

[0016] Preferably, the ratio of the transmission diameter of the gear disk 81 to the third gear 6 is 1:2.

[0017] Preferably, the third gear 6 is a spiral bevel gear or a bevel gear.

[0018] Preferably, the transmission mechanism is rotatably connected to the conduit 5 via a bearing.

[0019] The beneficial effects of this utility model are as follows: This application provides an improved insulation wrapping device. It utilizes a symmetrical front fork structure on the upper surface of the base plate, consisting of two front fork plates and a base plate, to create a stable wrapping operation space and effectively constrain the radial displacement of the cable core and insulation material. Simultaneously, an independent first and second wire-passing channel is integrated within the axially penetrating conduit on the lower surface of the base plate, respectively directionally conveying the cable core and insulation material. This solves the problem of separation and synchronous control of their conveying paths from the source, significantly improving the coaxiality and thickness uniformity of the wrapping. The device has a simple structure, is easy to adjust, and can adapt to rapid switching between multiple cable specifications, making it expected to be widely used in the high-end cable manufacturing field. Attached Figure Description

[0020] Figure 1 This is a diagram illustrating the overall structure of this application; Figure 2 This is a structural diagram of the front fork structure of this application; Figure 3 This is a structural diagram of the transmission mechanism of this application; Figure 4This is a structural diagram of the assembly of the third gear and the conduit in this application; Figure 5 This is a structural diagram of the guide wheel assembly of this application; Figure 6 This is a structural diagram of the conduit used in this application; Figure 7 This is a structural diagram of the overall assembly of this application.

[0021] Explanation of main component symbols Front fork structure 1; front fork plate 11; bottom plate 12; Protective shield 3; Base plate 4; Axial notch 41; Counterweight block 42; 5. Conduit 5; First wire passage 51; Second wire passage 52; Groove 53; Cover plate 54; Third gear 6; Elastic device 7; Gear disk 81; First gear 82; Second gear 83; Main drive wheel 91; driven wheel 92; auxiliary guide wheel 93.

[0022] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0023] Example: like Figure 1-4 As shown, an insulation wrapping device includes: a base plate 4, on the upper surface of which a front fork structure 1 is fixedly mounted, the front fork structure 1 being composed of two symmetrically arranged front fork plates 11 and a base plate 12, used to form a wrapping operation space; a cable guide tube 5 axially penetrating the base plate 4 and the base plate 12 on the lower surface of the base plate 4, the cable guide tube 5 containing independent first cable passage 51 and second cable passage 52, respectively used for directional conveying of cable and insulation material; a transmission mechanism is provided outside the cable guide tube 5, the transmission mechanism including a third gear 6 sleeved on the outside of the cable guide tube 5, a gear disk 81 meshing with the third gear 6, and a connecting... The first gear 82 of the moving gear disk 81; a guide wheel assembly is provided between the two front fork plates 11, the guide wheel assembly includes a main drive wheel 91 and at least one driven wheel 92, the main drive wheel 91 is coaxially fixed with a second gear 83 and meshes with the first gear 82, the rotation of the third gear 6 is transmitted sequentially through the gear disk 81, the first gear 82 and the second gear 83, driving the main drive wheel 91 to transport the insulating material, the cable and the insulating material are respectively passed through the independent channels of the conduit 5 to realize the material separation and transportation, the dual-channel design avoids wire interference, the gear transmission chain realizes single power source drive transportation and rotation winding, and the modular structure reduces assembly complexity.

[0024] The transmission diameter ratio between the gear disk 81 and the third gear 6 is 1:2, which reduces the rotational speed, thereby reducing frictional heat generation and suppressing static electricity accumulation.

[0025] The third gear 6 is either a spiral bevel gear or a bevel gear. Spiral bevel gears are suitable for high-speed precision winding, while bevel gears are suitable for low-cost maintenance scenarios.

[0026] The two fork plates 11 and the bottom plate 12 of the fork structure 1 are integral castings, which increases strength and eliminates stress concentration points at the splicing.

[0027] like Figure 5 As shown, elastic devices 7 are fitted onto the axle portions at both ends of the main drive wheel 91. One end of the elastic device 7 abuts against the corresponding front fork plate 11, and the other end abuts against the axle shoulder of the main drive wheel 91. The two ends of the main drive wheel 91 are floatingly supported on the front fork plate 11 by the elastic devices 7. When the thickness of the insulating material changes, the main drive wheel 91 is driven to displace in a direction perpendicular to the conveying plane. The elastic deformation generates a force opposite to the displacement direction, keeping the clamping force between the main drive wheel 91 and the driven wheel 92 dynamically constant, thereby forming an adaptive clamping gap between the main drive wheel 91 and its adjacent driven wheel 92. The elastic device 7 is a compression spring, disc spring, or spring spring. One type of insulating pad; the base plate 4 is provided with an axial notch 41, the lower part of the gear plate 81 passes through the notch and meshes with the third gear 6, avoiding lubricating oil splashing and contaminating the packaging material, and the gear meshing detection window allows for visual maintenance; at least one auxiliary guide wheel 93 at the cable outlet end of the driven wheel 92, the top of the front fork plate 11 is provided with a cable outlet guide wheel, the insulating packaging material is wound around the guide wheel group and then led out by the auxiliary guide wheel 93, the auxiliary guide wheel 93 eliminates packaging material wrinkles, the cable outlet guide wheel ensures the winding angle, and the overall S-shaped path increases the wrapping angle to prevent slippage; the transmission mechanism is rotatably connected to the cable tube 5 through the bearing, reducing rotational resistance.

[0028] like Figure 6 As shown, the first cable channel 51 is a central hollow channel of the cable conduit 5, and the second cable channel 52 is composed of an axial groove 53 on the side wall of the cable conduit 5 and a cover plate 54 covering the groove 53. The cable channel is centered to ensure the concentricity of the wrapping, and the cover plate 54 is detachable for easy cleaning and maintenance.

[0029] like Figure 7 As shown, the front fork plate 11 is symmetrically provided with counterweights 42 on its sidewalls. The center of gravity distribution of the counterweights 42 satisfies the dynamic rotational balance condition of the base plate 4 rotating at high speed around the axis. The front fork plate 11 is provided with detachable protective covers 3 on the front and rear sides along the direction of conveying the insulating packaging material to protect the guide wheel assembly.

[0030] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An insulating layer wrapping device, characterized in that, include: A base plate (4) has a fork structure (1) fixed on its upper surface to form a wrapping operation space; a cable guide tube (5) is provided on the lower surface of the base plate (4) through which the base plate (4) is placed in the wrapping operation space; the cable guide tube (5) contains an independent first cable passage (51) and a second cable passage (52) for directional conveying of cable and insulation material, respectively; a transmission mechanism is provided on the outside of the cable guide tube (5) for conveying insulation material passing through the second cable passage (52); the first cable passage (51) is the central hollow channel of the cable guide tube (5), and the second cable passage (52) is formed by the cable guide tube (5). The sidewall has an axial groove (53) and a cover plate (54) covering the groove (53); the fork structure (1) is composed of two symmetrically arranged fork plates (11) and a bottom plate (12), and the two fork plates (11) and the bottom plate (12) of the fork structure (1) are integral castings; the transmission mechanism includes a third gear (6) sleeved on the outside of the cable tube (5), a gear disk (81) meshing with the third gear (6), and a first gear (82) of the linkage gear disk (81); a guide wheel assembly is provided between the two fork plates (11), and the guide wheel assembly includes a main drive wheel (91) and at least one driven wheel (92). The main drive wheel (91) is coaxially fixed with the second gear (83) and meshes with the first gear (82). The rotation of the third gear (6) is transmitted sequentially through the gear disk (81), the first gear (82), and the second gear (83), driving the main drive wheel (91) to transport the insulating packaging material. The two ends of the main drive wheel (91) are fitted with elastic devices (7). One end of the elastic device (7) abuts against the corresponding front fork plate (11), and the other end abuts against the axle shoulder of the main drive wheel (91). The two ends of the main drive wheel (91) are floatingly supported on the front fork plate (11) by the elastic device (7). At least one auxiliary guide is provided at the wire outlet end of the driven wheel (92). The front fork plate (11) is provided with a lead-out guide wheel at the top. After the insulating material is wound around the guide wheel group, it passes through the auxiliary guide wheel (93) and is led out by the lead-out guide wheel. The base plate (4) is provided with an axial notch (41). The lower part of the gear plate (81) passes through the notch and meshes with the third gear (6). The transmission diameter ratio of the gear plate (81) and the third gear (6) is 1:

2. The front fork plate (11) is provided with symmetrical counterweights (42) on its side wall. The center of gravity distribution of the counterweights (42) satisfies the dynamic rotational balance condition. The front fork plate (11) is provided with detachable protective covers (3) on the front and rear sides along the conveying direction of the insulating material.

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