A color stripe forming mold for a cable jacket

Abstract

The utility model relates to mould technical field discloses a color bar forming die of cable sheath, including mould body, the mould body includes first mounting piece and second mounting piece, the first mounting piece is equipped with the through groove along the through groove of self axial, the second mounting piece is detachably sleeved in the outer periphery of first mounting piece, and is equipped with injection nozzle connecting port, mould core, the mould core is located in the through groove, and the inner wall between with the through groove forms the main material flow channel for the sheath main material flow, wherein, at least one color bar material flow channel is equipped on the first mounting piece, one end of color bar material flow channel is communicated with injection nozzle connecting port, and the other end leads to the wall surface of main material flow channel, is used for guiding color bar material to the surface of sheath main material, the utility model has the beneficial effect that is easy to process and wash and simple structure.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a color stripe forming mold for cable sheaths. Background Technology

[0002] Specialty cables, such as those for marine vessels, oil platforms, and offshore wind power generation, are primarily used for power and signal transmission between islands, offshore facilities, and the mainland. To facilitate rapid identification of their phase, function, or manufacturer information during laying, inspection, and maintenance, durable and conspicuous markings are required on the cable's outer sheath. Unlike ordinary cables, these specialty cables typically require the co-extrusion of one or more continuous colored stripes onto the black sheath surface for phase identification. To meet this requirement, various colored stripe extrusion dies have been developed, commonly including single-color, two-color, and three-color stripe structures. These dies work in conjunction with the main extruder, and the colored stripe material is injected into the die's flow channel via an independent injection molding machine, ultimately forming the desired colored stripes on the extruded cable sheath.

[0003] However, existing color bar molds have a significant structural flaw: the nozzle connection of the injection molding machine and the color bar material injection channel inside the mold are usually designed as a single piece. This integrated structure firstly significantly increases the processing difficulty and manufacturing cost of the mold, because the machining process requires high-precision operation on the deep holes and slender internal channels, which places extremely high demands on equipment and technology, and is time-consuming and labor-intensive. Secondly, in actual production, when frequently changing color bars or stopping for maintenance, the complex structure of the integrated channel makes it extremely easy for residual color bar material to clog the slender and tortuous channels, making cleaning exceptionally difficult. If cleaning is not thorough, the residual material will cause color contamination in subsequent products, seriously affecting quality. At the same time, the cumbersome maintenance process also significantly reduces production efficiency and increases operating costs. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the technical problem to be solved by this utility model is to propose a color stripe forming mold for cable sheath that is easy to process and clean.

[0005] The technical solution adopted by this utility model to solve its technical problem is to provide a color stripe forming mold for cable sheaths, comprising:

[0006] The mold body includes a first mounting member and a second mounting member. The first mounting member has a through groove that extends along its own axial direction. The second mounting member is detachably fitted onto the outer periphery of the first mounting member and has a nozzle connection port.

[0007] The mold core is disposed in the through groove and forms a main material flow channel for the main material of the sheath to flow between the mold core and the inner wall of the through groove;

[0008] The first mounting component is provided with at least one color stripe material flow channel. One end of the color stripe material flow channel is connected to the nozzle connection port, and the other end is connected to the wall of the main material flow channel, which is used to guide the color stripe material to the surface of the sheath main material.

[0009] In the above-mentioned color strip forming mold for cable sheath, the color strip material flow channel includes a pressure regulating section and a positioning section. One end of the pressure regulating section is connected to the nozzle connection port, and the other end is connected to the positioning section. The end of the positioning section away from the pressure regulating section leads to the wall of the main material flow channel, and the pressure regulating section is gradually narrowed towards the positioning section.

[0010] In the above-mentioned color stripe forming mold for cable sheath, the pressure regulating section includes a first draining part and a pressure boosting part arranged sequentially along the axial direction of the first mounting member. The first draining part and the pressure boosting part are respectively recessed from the outer wall of the first mounting member toward its interior, and the recessing depth of the first draining part is greater than the recessing depth of the pressure boosting part.

[0011] In the above-mentioned color strip forming mold for cable sheath, the first draining part is aligned with and connected to the injection nozzle connection port, one end of the pressurizing part is inclined toward the first draining part and connected to the first draining part, and the other end is inclined toward the positioning section and connected to the positioning section, and the pressurizing part is gradually tapered toward the positioning section.

[0012] In the above-mentioned color strip forming mold for cable sheath, the positioning section includes a second guide portion and a positioning portion arranged sequentially along the axis perpendicular to the first mounting member. The second guide portion is recessed from the outer wall of the first mounting member and communicates with one end of the pressurizing portion away from the first guide portion. One end of the positioning portion communicates with the second guide portion, and the other end communicates with the wall of the main material flow channel.

[0013] In the above-mentioned color stripe forming mold for cable sheath, the cross-sections of the first drain portion and the second drain portion are arc-shaped grooves, and the arc curvature of the first drain portion is greater than that of the second drain portion.

[0014] In the above-mentioned color strip forming mold for a cable sheath, the second mounting member is slidably fitted onto the first mounting member, wherein the outer wall of the first mounting member is provided with a first inclined surface arranged along its own circumference, and the inner wall of the second mounting member has a second inclined surface arranged along its own circumference and fitting against the first inclined surface.

[0015] In the above-mentioned color stripe forming mold for cable sheath, the mold body further includes a limiting member detachably sleeved on the first mounting member. The limiting member is located on the side of the first mounting member near the discharge end and is detachably connected to the second mounting member. The end face of the limiting member forms a planar contact with the first mounting member and the second mounting member respectively, and can restrict the sliding of the second mounting member.

[0016] The above-mentioned color stripe forming mold for cable sheath includes a mold sleeve, which is detachably disposed at the discharge end of the first mounting member and is used to shape the extruded cable sheath.

[0017] In the above-mentioned color strip forming mold for cable sheath, the color strip material flow channel is provided with three channels, which are arranged at equal intervals along the circumference of the first mounting member.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. In this utility model, the mold body includes a first mounting component and a second mounting component. The first mounting component has a through groove extending along its own axial direction. The second mounting component is detachably mounted around the first mounting component and has a nozzle connection port. The mold core is disposed in the through groove, forming a main material flow channel for the main material of the sheath to flow between the core and the inner wall of the through groove. The first mounting component has at least one color stripe material flow channel, one end of which communicates with the nozzle connection port, and the other end extends to the wall of the main material flow channel, guiding the color stripe material to the surface of the main material of the sheath. This design achieves physical separation of the nozzle interface and the flow channel, significantly reducing the processing difficulty and manufacturing cost of the mold. Simultaneously, during cleaning and maintenance, only the second mounting component needs to be disassembled to fully expose the color stripe material flow channel inlet, facilitating thorough cleaning of residual material inside the flow channel. This effectively avoids color change contamination problems caused by incomplete cleaning, greatly improving the maintenance efficiency and production flexibility of the mold.

[0020] 2. In this utility model, the color strip material flow channel includes a pressure regulating section and a positioning section. One end of the pressure regulating section is connected to the nozzle connection port, and the other end is connected to the positioning section. The end of the positioning section away from the pressure regulating section leads to the wall of the main material flow channel, and the pressure regulating section is gradually tapered towards the positioning section. This design uses a tapered structure to gradually compress and accelerate the molten color strip material, effectively improving its extrusion pressure and flow stability, and avoiding the phenomenon of broken or thin strips due to insufficient pressure. At the same time, the segmented design of the pressure regulating section and the positioning section realizes the functional synergy of "first stabilizing and increasing pressure, then accurately positioning", ensuring that the color strip material has formed a stable flow state before entering the main material flow channel and can be accurately guided to the designated position on the sheath surface, significantly improving the uniformity, continuity and positional accuracy of the color strip forming.

[0021] 3. In this utility model, the second mounting component is slidably fitted onto the first mounting component. The outer wall of the first mounting component has a first inclined surface arranged along its circumference, and the inner wall of the second mounting component has a second inclined surface arranged along its circumference and fitting against the first inclined surface. This design not only achieves automatic alignment during assembly, ensuring precise alignment between the nozzle connection and the color strip material flow channel and improving sealing reliability, but also allows for simple and quick disassembly without the need for rotation or forceful disassembly, effectively avoiding problems such as jamming and wear that are prone to occur in traditional designs. Attached Figure Description

[0022] Figure 1 This is a structural cross-sectional view of a color stripe forming mold for a cable sheath according to the present invention.

[0023] Figure 2 for Figure 1 Exploded view.

[0024] Figure 3 This is a structural schematic diagram of the first mounting component from another perspective in this utility model.

[0025] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0026] 100. First mounting component; 110. Through groove; 120. First inclined surface; 200. Second mounting component; 210. Injection nozzle connection port; 220. Second inclined surface; 300. Limiting component; 400. Mold core; 500. Mold sleeve; 600. Main material flow channel; 700. Color strip material flow channel; 710. Pressure regulating section; 711. First flow guide; 712. Pressure boosting section; 720. Positioning section; 721. Second flow guide; 722. Positioning section. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] like Figures 1 to 3 As shown, this embodiment provides a color stripe forming mold for cable sheaths, comprising:

[0033] The mold body includes a first mounting member 100 and a second mounting member 200. The first mounting member 100 is provided with a through groove 110 extending along its own axial direction. The second mounting member 200 is detachably fitted onto the outer periphery of the first mounting member 100 and is provided with a nozzle connection port 210.

[0034] The mold core 400 is disposed in the through groove 110 and forms a main material flow channel 600 for the flow of the main material of the sheath between the mold core 400 and the inner wall of the through groove 110.

[0035] The first mounting component 100 is provided with at least one color stripe material flow channel 700. One end of the color stripe material flow channel 700 is connected to the nozzle connection port 210, and the other end leads to the wall of the main material flow channel 600, which is used to guide the color stripe material to the surface of the main material of the sheath. This design realizes the physical separation of the nozzle interface and the flow channel, which significantly reduces the processing difficulty and manufacturing cost of the mold. At the same time, during cleaning and maintenance, only the second mounting component 200 needs to be removed to fully expose the inlet of the color stripe material flow channel 700, which facilitates the thorough cleaning of residual materials inside the flow channel, effectively avoiding the problem of color change pollution caused by incomplete cleaning, and greatly improving the maintenance efficiency and production flexibility of the mold.

[0036] Specifically, this utility model provides a color stripe forming mold for cable sheaths, suitable for the production of special cables such as marine cables, oil platform cables, and offshore wind power cables that require co-extrusion of continuous colored stripes on the surface of a black sheath. This mold enables simultaneous, stable, and precise forming of multiple colored stripes, ensuring clear markings, accurate positioning, and uniform color, meeting the requirements of high-standard industrial applications.

[0037] like Figures 1 to 3 As shown, the color stripe forming mold mainly includes a mold core 400, a mold body, and a mold sleeve 500. These components are arranged sequentially along the axial direction to form a complete extrusion molding channel. The mold body, as the core load-bearing and flow channel guiding structure of the mold, adopts a modular design concept and is composed of a first mounting component 100 and a second mounting component 200, balancing manufacturing feasibility with ease of maintenance.

[0038] Furthermore, the first mounting component 100 is a hollow cylindrical structure with an axially extending through groove 110 inside for mounting the die core 400. The die core 400 is assembled within the through groove 110, and an annular gap is formed between its outer surface and the inner wall of the through groove 110, constituting a main material flow channel 600 for the sheath material (such as thermoplastic materials like black polyethylene or polypropylene). During the extrusion process, the sheath material is conveyed to the main material flow channel 600 by the main extruder and flows forward axially, ultimately covering the outside of the cable core to form the basic sheath of the cable.

[0039] Furthermore, the first mounting component 100 is provided with at least one color stripe flow channel 700. One end of the color stripe flow channel 700 is connected to the nozzle connection port 210 of the second mounting component 200, and the other end extends to the inner wall surface of the main material flow channel 600, so that the colored molten material can smoothly flow into the main material flow channel 600 and adhere to the outer surface of the main material of the sheath. In the subsequent co-extrusion molding process, the color stripe is extruded along with the main material and shaped on the outer surface of the sheath, forming a durable and continuous visual mark.

[0040] Preferably, the color stripe flow channel 700 has three channels, which are equally spaced along the circumference of the first mounting member 100. Specifically, the three color stripe flow channels 700 are evenly distributed at 120° intervals. This layout can meet the user's need for three-part stripe injection on the surface of marine cable sheaths, and is particularly suitable for three-phase power cables that require clear phase marking. In addition, the design of simultaneous molding of the three color stripes can complete the laying of all marking color strips in one extrusion process without additional processes or multiple adjustments, thereby further improving processing efficiency and production stability.

[0041] Furthermore, the color stripe flow channel 700 includes a pressure regulating section 710 and a positioning section 720. One end of the pressure regulating section 710 is connected to the nozzle connection port 210, and the other end is connected to the positioning section 720. The end of the positioning section 720 away from the pressure regulating section 710 leads to the wall of the main material flow channel 600, and the pressure regulating section 710 is gradually tapered towards the positioning section 720, meaning its flow cross-sectional area gradually decreases from the inlet to the outlet. This design uses a tapered structure to gradually compress and accelerate the molten color stripe, effectively improving its extrusion pressure and flow stability, and avoiding strip breakage or thin strips due to insufficient pressure. At the same time, the segmented design of the pressure regulating section 710 and the positioning section 720 achieves the functional synergy of "first stabilizing and increasing pressure, then precise positioning," ensuring that the color stripe has formed a stable flow state before entering the main material flow channel 600 and can be accurately guided to the designated position on the sheath surface, significantly improving the uniformity, continuity, and positional accuracy of the color stripe forming.

[0042] Furthermore, the pressure regulating section 710 includes a first flow guide 711 and a pressure boosting section 712 arranged sequentially along the axial direction of the first mounting member 100. The first flow guide 711 and the pressure boosting section 712 are respectively recessed from the outer wall of the first mounting member 100 towards its interior, forming an open flow channel structure, which facilitates machining and subsequent cleaning. The recess depth of the first flow guide 711 is greater than the recess depth of the pressure boosting section 712, forming a stepped transition structure from deep to shallow. This design allows the molten color strip to have a larger volume space in the initial stage of entering the flow channel, which is conducive to smooth introduction and reduces flow impact and cavitation. Subsequently, in the pressure boosting section 712, due to the reduced cross-sectional height, the melt is compressed, the shear rate increases, and a stable extrusion pressure is gradually established, providing a power guarantee for subsequent precise molding.

[0043] Furthermore, the first guide section 711 is aligned and connected to the nozzle connection port 210, ensuring that the color strip material can enter the flow channel system without deviation after being injected from the nozzle. One end of the pressure boosting section 712 is inclined towards the first guide section 711 and connected to the first guide section 711, while the other end is inclined towards the positioning section 720 and connected to the positioning section 720. The pressure boosting section 712 is arranged in a gradually narrowing manner towards the positioning section 720. That is, the flow cross-sectional area of ​​the pressure boosting section 712 gradually decreases from the inlet to the outlet, further enhancing the compression effect and flow stability of the melt, and effectively preventing defects such as broken strips and thin strips.

[0044] Furthermore, the positioning section 720 includes a second flow guide 721 and a positioning section 722 arranged sequentially along a direction perpendicular to the axis of the first mounting member 100. The second flow guide 721 is recessed from the outer wall of the first mounting member 100 and communicates with one end of the pressurizing section 712 away from the first flow guide 711, serving to receive and guide the melt; one end of the positioning section 722 communicates with the second flow guide 721, and the other end opens to the wall of the main material flow channel 600, used to accurately guide the color strip material to the predetermined attachment position of the sheath main material. This segmented design achieves a smooth transition from "axial conveying" to "radial positioning", ensuring that the color strip material has completed directional adjustment and position alignment before entering the main material flow channel 600, avoiding offset, twisting or poor fusion caused by abrupt changes in flow direction, and significantly improving the positional accuracy and appearance consistency of the color strip forming.

[0045] Furthermore, the cross-sections of the first flow guide 711 and the second flow guide 721 are arc-shaped grooves, meaning that the inner surface of their channels has a rounded transition shape. This arc-shaped structure helps to reduce the shear stress and flow resistance of the molten color strip during the flow process, and avoids stress concentration, eddies, or material stagnation caused by sharp corners or straight edges, thereby improving the melt fluidity and filling uniformity.

[0046] The first guide section 711 has a larger arc radius than the second guide section 721, thus forming a flow channel profile that gradually transitions from a large curvature to a small curvature. Specifically, the larger arc radius means a larger radius of curvature, which provides a wider introduction space for the initially entering melt, facilitating smooth feeding and reducing flow disturbance. The second guide section 721, with a relatively smaller arc radius and more compact curvature, plays a converging and guiding role, helping to guide the melt to the positioning section 722 in an orderly manner, ensuring accurate subsequent merging into the main material flow channel 600.

[0047] Preferably, the radius of the arc surface of the first flow guide 711 is R5, and the radius of the arc surface of the second flow guide 721 is R3. This size configuration has been verified in practical applications to effectively balance the feeding capacity and flow control requirements: the larger arc structure of R5 facilitates the smooth injection of high-viscosity colored materials and reduces the risk of material blockage; the smaller arc of R3 enhances the constraint on the melt flow direction, prevents diffusion deviation, and ensures the stability and positional accuracy of the color strip formation.

[0048] Furthermore, the positioning part 722 is a hollow cylindrical structure with an internal channel extending along an axial direction perpendicular to the first mounting member 100, used to stably guide the molten color strip from the second guide part 721 to the wall of the main material flow channel 600. This cylindrical structure has a constant inner diameter, preferably 5 mm. This design ensures sufficient flow area while effectively constraining the melt flow direction, preventing the color strip from diffusing or shifting at the outlet, thereby ensuring that it adheres precisely to the designated position of the main material in a concentrated and continuous manner.

[0049] In this embodiment, the second mounting component 200 is detachably fitted onto the outer periphery of the first mounting component 100, and the two are axially limited and structurally stable connected by the limiting component 300. The second mounting component 200 is provided with a nozzle connection port 210 for docking with the output end of an external independent injection molding machine to introduce molten colored marking material. This design integrates the function of the nozzle connection port 210 onto the second mounting component 200, while the internal color stripe flow channel 700 is completely disposed inside the first mounting component 100, achieving physical separation of the interface and the flow channel.

[0050] To further ensure the sealing and connection reliability of the mold during assembly, while also taking into account the convenience of disassembly and assembly, the second mounting part 200 is slidably fitted onto the outer periphery of the first mounting part 100, forming a connection structure for axial assembly and radial positioning.

[0051] Furthermore, the outer wall of the first mounting component 100 is provided with a first inclined surface 120 continuously arranged along its circumference, and the inner wall of the second mounting component 200 is provided with a second inclined surface 220 arranged along its circumference and fitting against the first inclined surface 120. The two inclined surfaces match each other and fit tightly together to form a conical sealing fit structure. This design not only realizes the automatic centering function during the assembly process, ensuring the precise docking of the nozzle connection port 210 and the color strip material flow channel 700 and improving the sealing reliability, but also makes the disassembly operation simple and quick, without the need for rotation or forceful disassembly, effectively avoiding problems such as jamming and wear that are prone to occur in traditional designs.

[0052] In this embodiment, the mold body also includes a limiting member 300 detachably sleeved on the first mounting member 100. The limiting member 300 is located on the side of the first mounting member 100 near the discharge end and is detachably connected to the second mounting member 200 by screws or clamps. It is used to apply axial constraint to the second mounting member 200 to prevent it from axially displacing or loosening due to melt pressure or vibration during the mold operation.

[0053] Furthermore, the end face of the limiting member 300 forms planar contact with the corresponding end faces of the first mounting member 100 and the second mounting member 200, respectively. This multi-faceted contact structure can effectively transmit axial force, improve the overall connection rigidity, and ensure a tight fit between the components, thereby enhancing assembly stability and sealing reliability. At the same time, the planar contact facilitates machining control and assembly alignment, avoids stress concentration, and helps maintain accuracy after repeated disassembly and assembly.

[0054] By setting the limiting component 300, not only is the sliding tendency of the second mounting component 200 effectively suppressed, ensuring the stable alignment and sealing of the nozzle connection port 210 and the internal color strip material flow channel 700 throughout the extrusion process, but also the reliability and safety of the mold operation are further improved, especially suitable for high pressure and high speed extrusion conditions.

[0055] Furthermore, the die sleeve 500 is detachably installed at the discharge end of the first mounting component 100 for final shaping of the co-extruded cable sheath. The die sleeve 500 has a sizing hole inside, the geometry of which matches the outer diameter of the target sheath. This allows for dimensional calibration and shape trimming of the molten sheath material before cooling, ensuring that the outer surface of the sheath is smooth and round, and that the outer diameter accuracy meets the process requirements.

Claims

1. A color stripe forming mold for cable sheaths, characterized in that, include: The mold body includes a first mounting member and a second mounting member. The first mounting member has a through groove that extends along its own axial direction. The second mounting member is detachably fitted onto the outer periphery of the first mounting member and has a nozzle connection port. The mold core is disposed in the through groove and forms a main material flow channel for the main material of the sheath to flow between the mold core and the inner wall of the through groove; The first mounting component is provided with at least one color stripe material flow channel. One end of the color stripe material flow channel is connected to the nozzle connection port, and the other end is connected to the wall of the main material flow channel, which is used to guide the color stripe material to the surface of the sheath main material.

2. The color stripe forming mold for a cable sheath according to claim 1, characterized in that, The color strip material flow channel includes a pressure regulating section and a positioning section. One end of the pressure regulating section is connected to the nozzle connection port, and the other end is connected to the positioning section. The end of the positioning section away from the pressure regulating section leads to the wall of the main material flow channel, and the pressure regulating section is gradually narrowed towards the positioning section.

3. The color stripe forming mold for a cable sheath according to claim 2, characterized in that, The pressure regulating section includes a first drainage section and a pressure boosting section arranged sequentially along the axial direction of the first mounting member. The first drainage section and the pressure boosting section are respectively recessed from the outer wall of the first mounting member toward its interior, and the recess depth of the first drainage section is greater than the recess depth of the pressure boosting section.

4. The color stripe forming mold for a cable sheath according to claim 3, characterized in that, The first drainage section is aligned with and connected to the nozzle connection port. One end of the pressurizing section is inclined toward the first drainage section and connected to the first drainage section, and the other end is inclined toward the positioning section and connected to the positioning section. The pressurizing section is arranged in a tapering manner toward the positioning section.

5. The color stripe forming mold for a cable sheath according to claim 3, characterized in that, The positioning section includes a second flow-guiding part and a positioning part arranged sequentially along the axis perpendicular to the first mounting member. The second flow-guiding part is recessed from the outer wall of the first mounting member and communicates with one end of the pressurizing part away from the first flow-guiding part. One end of the positioning part is connected to the second flow-guiding part, and the other end is connected to the wall of the main material flow channel.

6. The color stripe forming mold for a cable sheath according to claim 5, characterized in that, The cross-sections of the first drainage portion and the second drainage portion are arc-shaped grooves, and the arc curvature of the first drainage portion is greater than that of the second drainage portion.

7. The color stripe forming mold for a cable sheath according to claim 1, characterized in that, The second mounting member is slidably fitted onto the first mounting member, wherein the outer wall of the first mounting member is provided with a first inclined surface arranged along its own circumference, and the inner wall of the second mounting member is provided with a second inclined surface arranged along its own circumference and fitting against the first inclined surface.

8. The color stripe forming mold for a cable sheath according to claim 7, characterized in that, The mold body also includes a limiting member detachably sleeved on the first mounting member. The limiting member is located on the side of the first mounting member near the discharge end and is detachably connected to the second mounting member. The end face of the limiting member forms a planar contact with the first mounting member and the second mounting member respectively, and can restrict the sliding of the second mounting member.

9. The color stripe forming mold for a cable sheath according to claim 8, characterized in that, Includes a die sleeve, which is detachably disposed at the discharge end of the first mounting component and is used to shape the extruded cable sheath.

10. The color stripe forming mold for a cable sheath according to claim 1, characterized in that, The color stripe material flow channel is provided in three places, and is arranged at equal intervals along the circumference of the first mounting component.

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