Polytetrafluoroethylene film wrapping shielding wire

Abstract

The utility model belongs to the technical field of polytetrafluoroethylene wires, and particularly relates to a polytetrafluoroethylene film-wrapped shielding wire, which comprises a conductor core and an insulating coating layer on the outer side of the conductor core, the wound and laid polytetrafluoroethylene film is wound on the outer side in the conveying direction of the guide core to form wrapping; the protective films which are opposite up and down are attached to the outer side of the polytetrafluoroethylene film to block external liquid and gas and prevent the liquid and gas from permeating inwards; and the positioning strips which are bilaterally symmetrical are conveyed along the axis direction of the guide core and are butted with the two sides of the protective film to fix the protective film. When a polytetrafluoroethylene film is lapped, the edge position of the polytetrafluoroethylene film can be automatically trimmed to be gentle, the turnup part is prevented from influencing the production quality of a wire, and meanwhile, a protective film is coated on the outer side to prevent external liquid and gas from permeating into pores of a polytetrafluoroethylene material, so that the stable operation of the wire is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of polytetrafluoroethylene wires, and particularly relates to a polytetrafluoroethylene film wrapped shielded wire. Background Technique

[0002] The polytetrafluoroethylene film wrapped shielded wire is a special wire or cable. A polytetrafluoroethylene film is wound around the outside of the conductor as an insulating layer, providing excellent electrical properties, high temperature resistance, corrosion resistance, and aging resistance.

[0003] Currently, in the production operation of existing cables, it is found that the polytetrafluoroethylene material itself has many pores, is easy to penetrate liquids and gases, which will cause the failure or performance degradation of the material and affect the normal operation of the wire.

[0004] To solve the above problems, a polytetrafluoroethylene film wrapped shielded wire is proposed in this application. Content of the Utility Model

[0005] The purpose of the utility model is to provide a polytetrafluoroethylene film wrapped shielded wire, which solves the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model is a polytetrafluoroethylene film wrapped shielded wire, including: a core and an insulating coating layer outside it; a polytetrafluoroethylene film wound and laid, which is wound around the outside along the conveying direction of the core to form a coating; protective films facing each other up and down, which are attached to the outside of the polytetrafluoroethylene film to block external liquids and gases from infiltrating inward; positioning strips symmetrical left and right, which are conveyed together along the axis direction of the core and are docked on both sides of the protective film to fix it.

[0008] Further, a bracket is arranged on the outside of the conveying line of the core, and upper and lower opposite limiting rollers are arranged inside, located on the upper and lower sides of the core.

[0009] Further, two positioning balls are also arranged inside the bracket, adjacent to the limiting rollers and far from the core.

[0010] Further, folding edges are arranged on both sides of the protective film, and an adhesive is arranged on the inner side.

[0011] Further, a shaft seat is longitudinally arranged inside the bracket, and rotating shafts are arranged at both ends of the positioning ball and the limiting roller and are rotatably connected to the shaft seat.

[0012] Further, an arc roller that cooperates with the positioning ball to bend the protective film is arranged inside the limiting roller.

[0013] Further, both ends of the limiting roller press the folded edges so that they are pasted on the upper and lower surfaces of the positioning strip.

[0014] The utility model has the following beneficial effects:

[0015] By adding a protective film outside the polytetrafluoroethylene film, the utility model can form a barrier to external liquid and gas, and form a wrapped protection for the polytetrafluoroethylene film, so that the conductor is not affected by liquid and gas. Compared with the existing polytetrafluoroethylene film wrapped shielded wire, the stable operation state can be guaranteed and the service life can be prolonged.

[0016] In the wrapping process of producing the wire, the arc roller can extrude the polytetrafluoroethylene film to keep it flat, effectively avoiding the situation that the edges of the winding part are warped, so as to ensure the wrapping quality of the polytetrafluoroethylene film. At the same time, the protective film will be automatically attached to the outside to form a wrap. At this time, the assembled effect can be maintained by using the positioning strip for butt joint, and it can also be extruded and wrapped together with the conductor core to be fixed inside the wire, increasing its mechanical properties and improving the use effect.

[0017] Of course, it is not necessary for any product implementing the utility model to achieve all the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall external structure of the present utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the wire of the present utility model;

[0021] Figure 3 It is a schematic diagram of the partial enlarged structure of part A of the present utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the bracket part of the present utility model;

[0023] Figure 5 It is a schematic diagram of the internal structure of the bracket of the present utility model;

[0024] In the drawings, the list of components represented by each reference numeral is as follows:

[0025] In the figure: 1. Conductive core; 2. Insulating coating layer; 3. Polytetrafluoroethylene film; 4. Protective film; 5. Positioning strip; 6. Bracket; 7. Limiting roller; 8. Positioning ball; 9. Hem; 10. Shaft seat; 11. Rotating shaft; 12. Arc roller. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention.

[0028] Please refer to Figures 1-5 As shown, the present invention is a polytetrafluoroethylene film wrapped shielded wire, including: a conductive core 1 and an insulating coating layer 2 outside it;

[0029] The polytetrafluoroethylene film 3 wound and laid is wound around the outside along the conveying direction of the conductive core 1 to form a coating;

[0030] The protective films 4 opposite to each other up and down are attached to the outside of the polytetrafluoroethylene film 3 to block external liquid and gas from infiltrating inward;

[0031] The symmetric positioning strips 5 on the left and right are conveyed together along the axis direction of the conductive core 1 and are butted on both sides of the protective film 4 to fix it;

[0032] This embodiment provides a polytetrafluoroethylene wire for preventing the infiltration of liquid and gas. The coating of the polytetrafluoroethylene film 3 by the protective film 4 can block the external liquid and gas from infiltrating into the pores to ensure the normal operation of the wire. At the same time, the positioning strip 5 is used to increase its mechanical properties and improve the use effect during application.

[0033] Among them, a bracket 6 is arranged outside the conveying line of the conductive core 1, and limiting rollers 7 opposite to each other up and down are arranged inside, located on the upper and lower sides of the conductive core 1 to form a guiding effect on it to prevent deflection.

[0034] Among them, there are also two positioning balls 8, one above the other, inside the bracket 6, near the limiting roller 7 and far from the guiding core 1. After being squeezed by the positioning balls 8, the protective film 4 forms a semi-circular bending structure.

[0035] Among them, there are hemming edges 9 on both sides of the protective film 4, and an adhesive is provided on the inner side thereof.

[0036] Among them, a shaft seat 10 is longitudinally provided inside the bracket 6. Rotating shafts 11 are provided at both ends of the positioning ball 8 and the limiting roller 7 and are rotatably connected to the shaft seat 10. And a belt transmission mechanism is built inside the bracket 6, so that the positioning ball 8 and the limiting roller 7 rotate synchronously.

[0037] Among them, an arc-shaped roller 12 that cooperates with the positioning ball 8 to bend the protective film 4 is provided inside the limiting roller 7.

[0038] Among them, both ends of the limiting roller 7 squeeze the hemming edges 9 to make them adhere to the upper and lower surfaces of the positioning strip 5.

[0039] It can be understood that when the present utility model winds the polytetrafluoroethylene film 3, it can automatically trim the edge position thereof to be flat, prevent the warped part from affecting the production quality of the wire, and at the same time cover the protective film 4 on the outside to prevent external liquid and gas from penetrating into the pores of the polytetrafluoroethylene material, thereby ensuring the stable operation of the wire.

[0040] A specific application of the operation process of this embodiment is as follows: When producing a wire, first, the positioning ball 8 inside the bracket 6 cooperates with the arc-shaped roller 12 to squeeze the protective film 4 into a bent state and make it fit on the surface of the wound polytetrafluoroethylene film 3. While making both sides thereof dock with the positioning strip 5 to form a limit, it can also exert an extrusion effect on the polytetrafluoroethylene film 3, so that the warped part at the edge position is restored to be flat, which is convenient for subsequent production operations; at this time, the polytetrafluoroethylene film 3, the protective film 4, and the positioning strip 5 enter the extrusion operation together with the guiding core 1, and an insulating coating layer 2 is formed and covered on the outside. At this time, the mechanical properties of the wire are increased through the positioning strip 5 to improve the use effect of the wire.

[0041] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A polytetrafluoroethylene film wrapped shielded wire, characterized in that: include: A conductor core (1) and an insulating coating layer (2) on its outer side; The polytetrafluoroethylene film (3) is wound around the outer side of the guide core (1) along the conveying direction to form a coating; The upper and lower protective films (4) are attached to the outer side of the polytetrafluoroethylene film (3) to block the external liquid and gas from penetrating into the inside; The left-right symmetrical positioning strips (5) are transported together along the axial direction of the guide core (1) and docked at both sides of the protective film (4) to fix it.

2. The polytetrafluoroethylene film wrapped shielded wire according to claim 1, characterized in that: A bracket (6) is arranged outside the conveying line of the guide core (1), and upper and lower limiting rollers (7) are arranged inside the guide core (1) and are located on the upper and lower sides of the guide core (1).

3. The polytetrafluoroethylene film wrapped shielded wire according to claim 2, characterized in that: The bracket (6) is also provided with upper and lower positioning balls (8) at positions adjacent to the limiting roller (7) and away from the guide core (1).

4. The polytetrafluoroethylene film wrapped shielded wire according to claim 1, characterized in that: Folding edges (9) are provided on both sides of the protective film (4), and adhesive is provided on the inner side thereof.

5. The polytetrafluoroethylene film wrapped shielded wire according to claim 2, characterized in that: An axle seat (10) is longitudinally arranged on the inner side of the bracket (6), and rotating shafts (11) are arranged at both ends of the positioning ball (8) and the limiting roller (7) and are rotatably connected to the axle seat (10).

6. The polytetrafluoroethylene film wrapped shielded wire according to claim 2, characterized in that: The interior of the limiting roller (7) is provided with an arc-shaped roller (12) which cooperates with the positioning ball (8) to bend the protective film (4).

7. The polytetrafluoroethylene film wrapped shielded wire according to claim 2, characterized in that: The two ends of the limiting roller (7) squeeze the folded edge (9) so that it adheres to the upper and lower surfaces of the positioning strip (5).

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