Cable extrusion integrated die

Abstract

The utility model relates to the technical field of cable sheath processing, in particular to a cable extrusion integrated die, which comprises a die core and a die sleeve, the die core comprises a conical part and a flat part which are inserted into the die sleeve, the center of the die core is provided with a center hole for a cable core to pass through, and the die sleeve is provided with a through hole. The die sleeve comprises a main body part integrally connected with the die core and an adjusting part which is detachably connected with the main body part and is used for replacing and changing the thickness of the sheath. According to the utility model, the sheath is divided into the main body part and the adjusting part, and the concentricity of the sheath is ensured by integrating the main body part and the mold core. The adjusting part can be detached and replaced with different specifications to adjust the molding cavity so as to produce cable sheaths with different specifications and thicknesses, so that the universality of the integrated mold is enhanced; and the adjusting part can be detached to clean the internal molding cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of cable sheath processing, in particular to a cable extrusion integrated mold. Background Art

[0002] Cable extrusion mold is a mold that is connected to the extruder to produce cable or optical cable sheath. Traditional molds are usually divided into a mold core and a mold sleeve. The mold core can guide and position the core wire or optical fiber of the cable, and the mold sleeve cooperates with the mold core to form a closed flow channel, so that the molten material passes through the mold under high pressure, and finally cools and solidifies to form a cable sheath of the required thickness. During use, it is necessary to ensure that the mold sleeve and the mold core have extremely high concentricity, which requires repeated adjustment of the mold sleeve.

[0003] There is an integrated mold for manufacturing cables on the market. It integrates the mold sleeve and the mold core to ensure the concentricity of the mold sleeve and the mold core. However, it is found that when using the mold to produce optical cable sheaths of different specifications and thicknesses, it is necessary to customize the corresponding integrated mold, which leads to increased costs in mold design and manufacturing and concentricity debugging. In addition, the internal molding part of the integrated mold is not easy to clean, resulting in stains accumulation that affects the quality of the finished sheath. Utility Model Content

[0004] In order to solve the problems in the above background technology, the utility model provides a cable extrusion integrated mold.

[0005] The utility model solves the technical problem by adopting the following solution: a cable extrusion integrated mold, comprising a mold core and a mold sleeve, wherein the mold core comprises a tapered portion and a flat portion inserted into the mold sleeve, and a center hole for the cable core to pass through is provided at the center of the mold core, and is characterized in that the mold sleeve comprises a main body portion integrally connected to the mold core and an adjustment portion detachably connected to the main body portion for replacing and changing the thickness of the sheath.

[0006] By adopting the above technical solution, the mold sleeve is divided into a main body and an adjustment part, and the mold core is integrally connected with the main body in the mold sleeve, which ensures the concentricity and stability between the mold core and the mold sleeve during the extrusion process, so as to improve the molding accuracy and product quality of the cable sheath. Adjustment parts of different specifications can be quickly replaced according to production needs to change the size of the molding cavity, adapt to the production requirements of cable sheaths of different thicknesses, and improve the versatility of the mold; and the adjustment part can be detached to conveniently clean the internal molding cavity and flow channel.

[0007] Furthermore, the main body includes a first conical hole, the adjusting portion includes a second conical hole and a cylindrical hole connected to the first conical hole, a conical flow channel for feeding is formed between the first conical hole, the second conical hole and the conical portion, and a molding cavity is formed between the cylindrical hole and the flattening portion.

[0008] By adopting the above technical solution, a replaceable adjustment part is designed, in which the size ratios of the second conical hole and the cylindrical hole are different. The adjustment part can be quickly changed according to different production needs to adjust the size of the molding cavity to adapt to the production of cable sheaths of different specifications.

[0009] Furthermore, the inner wall of the main body is provided with an internal thread, and the portion of the adjustment portion extending into the main body is provided with an external thread, and the external thread matches the internal thread.

[0010] Furthermore, anti-slip grooves are provided on the outer wall of the adjustment part.

[0011] By adopting the above technical solution, the adjustment part can be conveniently disassembled and assembled with the main body through threaded cooperation, and a stable connection between the adjustment part and the main body can be ensured. Anti-slip grooves are added to the outer wall of the adjustment part, which can facilitate manual external twisting of the adjustment part for assembly and disassembly, thereby improving efficiency.

[0012] Furthermore, the axial lines of the first tapered hole, the second tapered hole and the cylindrical hole are all arranged concentrically with the axial line of the central hole.

[0013] By adopting the above technical solution, uneven material distribution due to eccentricity is avoided, and product quality is effectively improved.

[0014] Furthermore, the tapered flow channel is provided with a plurality of feed expansion openings evenly distributed around the central axis on one side away from the molding cavity.

[0015] By adopting the above technical solution, the molten material can enter the mold evenly from multiple directions, avoiding uneven thickness of the sheath caused by material accumulation or uneven flow.

[0016] In summary, the utility model has the following beneficial effects: the utility model divides the mold sleeve into a main body integrally formed with the mold core and a detachable and replaceable adjustment part, while ensuring high concentricity between the mold core and the mold sleeve, and can quickly adjust the adjustment part according to the different cable sheath thickness requirements, so as to improve the universality of the mold and reduce production costs. And because the adjustment part is detachable, it is more convenient to clean the molding cavity and flow channel inside the mold.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional schematic diagram of this embodiment;

[0019] Figure 2It is a comparative cross-sectional view of adjustment parts of different specifications of this embodiment;

[0020] Figure 3 is an overall schematic diagram of this embodiment;

[0021] Figure 4 It is a partially enlarged schematic diagram of the decomposition of this embodiment.

[0022] In the figure: 1. mold core; 11. tapered portion; 12. flat portion; 13. center hole; 2. mold sleeve; 21. main body; 211. first tapered hole; 22. adjustment portion; 221. second tapered hole; 222. cylindrical hole; 3. tapered flow channel; 4. molding cavity; 5. external thread; 6. internal thread; 7. anti-slip pattern; 8. feed flare. DETAILED DESCRIPTION

[0023] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0024] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0025] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0026] like Figures 1 to 3 As shown, a cable extrusion integrated mold is connected to the extruder, including a mold core 1 and a mold sleeve 2. The mold core 1 includes a tapered portion 11 and a flat portion 12 inserted into the mold sleeve 2, and a center hole 13 for the cable core to pass through is provided at the center of the mold core 1. The mold sleeve 2 of this embodiment includes a main body 21 integrally connected to the mold core 1 and an adjustment portion 22 detachably connected to the main body 21 for replacing and changing the thickness of the sheath.

[0027] This embodiment divides the mold sleeve 2 into a main body 21 and an adjustment part 22, wherein the mold core 1 is integrally connected with the main body 21 in the mold sleeve 2, thereby ensuring the concentricity and stability between the mold core 1 and the mold sleeve 2 during the extrusion process, so as to improve the molding accuracy and product quality of the cable sheath. The adjustment part 22 of different specifications can be quickly replaced according to production needs to change the size of the molding cavity 4, adapt to the production requirements of cable sheaths of different thicknesses, and improve the versatility of the mold; and the detachable adjustment part 22 allows the operator to easily and quickly remove the adjustment part 22 to clean the molding cavity 4 and the flow channel inside the mold, so as to avoid the impurities and residues accumulated due to long-term production from having an adverse effect on the appearance of the sheath.

[0028] like Figure 1 and Figure 2 As shown, the main body 21 of this embodiment includes a first tapered hole 211, and the adjusting portion 22 includes a second tapered hole 221 and a cylindrical hole 222 connected to the first tapered hole 211, wherein the first tapered hole 211, the second tapered hole 221 and the tapered portion 11 form a tapered flow channel 3 for feeding, and the cylindrical hole 222 and the flat portion 12 form a molding cavity 4. By designing a replaceable adjusting portion 22, the size ratios of the second tapered hole 221 and the cylindrical hole 222 are different, and different adjusting portions 22 can be quickly replaced according to different production requirements to adjust the size of the molding cavity 4 to adapt to the production of cable sheaths of different specifications and thicknesses.

[0029] like Figure 4 As shown, the inner wall of the main body 21 of this embodiment is provided with an internal thread 5, and the second adjustment part 22 extends into the inner part of the main body 21 and is provided with an external thread 6, and the external thread 5 matches the internal thread 6. By matching the internal thread 5 on the inner wall of the main body 21 with the external thread 6 in the inner part of the adjustment part 22, the adjustment part 22 can be conveniently disassembled and assembled with the main body 21 through thread matching, and a stable connection between the adjustment part 22 and the main body 21 can be ensured, so that the mold has high concentricity and stability in the working state. Furthermore, anti-slip grooves 7 are provided on the outer wall of the adjustment part 22. Adding anti-slip grooves 7 on the outer wall of the adjustment part 22 can facilitate external manual twisting of the adjustment part 22 for loading and unloading, thereby improving loading and unloading efficiency.

[0030] like Figure 1 As shown, the axial lines of the first tapered hole 211, the second tapered hole 221 and the cylindrical hole 222 of this embodiment are all arranged concentrically with the axial line of the center hole 13. By keeping the axial lines of the first tapered hole 211, the second tapered hole 221 and the cylindrical hole 222 concentrically with the axial line of the center hole 13 of the mold core 1, it is ensured that the molten material flows along the same axis during the feeding, compression and molding processes, effectively ensuring the accuracy and consistency of the cable sheath extrusion, avoiding uneven material distribution due to eccentricity, and effectively improving product quality.

[0031] like Figure 3 As shown, the tapered flow channel 3 of this embodiment is provided with a plurality of feed expansion openings 8 evenly distributed around the central axis on the side away from the molding cavity 4. By providing a plurality of feed expansion openings 8 evenly distributed around the central axis on the side away from the molding cavity 4 of the tapered flow channel 3, the molten material can enter the mold evenly from multiple directions, effectively avoiding uneven thickness of the sheath caused by material accumulation or uneven flow.

[0032] In summary, the beneficial effects of this embodiment are as follows: this embodiment divides the mold sleeve 2 into a main body 21 and an adjustment part 22, and the mold core 1 is integrally connected with the main body 21 to ensure concentricity and stability during extrusion, and the replaceable adjustment part 22 design can quickly adjust the size of the molding cavity 4 according to production requirements to determine the thickness of the sleeve, significantly improving the versatility of the mold. The external thread 5 on the inner wall of the main body 21 matches the internal thread 6 of the adjustment part 22, so that the adjustment part 22 can be easily disassembled and assembled through the thread, ensuring the stability of the mold.

[0033] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A cable extrusion integrated mold, comprising a mold core and a mold sleeve, wherein the mold core comprises a tapered portion and a flat portion inserted into the mold sleeve, and a center hole for the cable core to pass through is provided at the center of the mold core, characterized in that: The mold sleeve comprises a main body portion integrally connected to the mold core and an adjusting portion detachably connected to the main body portion for replacing and changing the thickness of the sleeve.

2. The cable extrusion integrated mold according to claim 1, characterized in that: The main body includes a first conical hole, the adjusting portion includes a second conical hole and a cylindrical hole connected to the first conical hole, a conical flow channel for feeding is formed between the first conical hole, the second conical hole and the conical portion, and a molding cavity is formed between the cylindrical hole and the flattening portion.

3. The cable extrusion integrated mold according to claim 2, characterized in that: The inner wall of the main body is provided with an internal thread, and the portion of the adjusting portion extending into the main body is provided with an external thread, and the external thread matches the internal thread.

4. The cable extrusion integrated mold according to claim 3, characterized in that: The outer wall of the adjusting part is provided with anti-slip grooves.

5. The cable extrusion integrated mold according to claim 4, characterized in that: The axial lines of the first tapered hole, the second tapered hole and the cylindrical hole are all arranged concentrically with the axial line of the central hole.

6. The cable extrusion integrated mold according to claim 5, characterized in that: The conical flow channel is provided with a plurality of feed expansion openings evenly distributed around the central axis on one side away from the molding cavity.

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