A cable sheathing forming die

Abstract

This utility model relates to a cable sheath forming mold, including a fixed mold and a stacking mold on the right side of the fixed mold. Multiple feed ports are formed on the outer walls of both the fixed mold and the stacking mold, and multiple guide grooves are formed on the inner walls of both the fixed mold and the stacking mold. The guide grooves are connected to the feed ports. Depending on the required number of cable sheath layers, multiple stacking molds and the fixed mold are fixedly connected. The molten material is then extruded through the fixed mold to form the first layer of sheath on the outside of the conductor. The molten material can then be extruded a second time through the stacking mold on top of the first layer of sheath to form the second layer of sheath. Following this operation, cable sheaths can be manufactured according to the required number of cable sheath layers.

Description

Technical Field

[0001] This utility model relates to the field of molding die technology, specifically to a cable sheath molding die. Background Technology

[0002] Cables, as important carriers of power transmission and signal transmission, typically consist of a conductor and multiple layers of insulation or protective sheaths surrounding the conductor. Multi-layered sheath structures effectively enhance the mechanical strength, weather resistance, insulation performance, and service life of cables, making them widely used in power, communications, and construction industries.

[0003] Currently, cable sheaths are mostly formed using extrusion dies. Molten thermoplastic material is continuously extruded around the conductor, and after cooling and solidification, the cable sheath is formed. However, most existing cable sheath extrusion dies are monolithic structures, typically capable of extruding only a single material or a single-layer structure. To produce multi-layered composite cables, multiple single-layer dies are connected in series for segmented extrusion. This method is costly, requires a large footprint, is complex to operate, and has low production efficiency. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a cable sheath forming mold.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A cable sheath forming mold includes a fixed mold, a stacking mold on the right side of the fixed mold, multiple feed ports on the outer side walls of both the fixed mold and the stacking mold, and multiple guide grooves on the inner side walls of both the fixed mold and the stacking mold, the guide grooves being connected to the feed ports; Multiple slots are provided on the right side of both the fixed mold and the stacking mold. Rotary grooves are provided on the outer side walls of both the fixed mold and the stacking mold. A rotating ring is rotatably connected inside the rotating grooves. Multiple insert plates are fixed on the left side of the stacking mold. Insertion extrusion plates are fixed on the outer side walls of the insert plates. Multiple rotating extrusion plates are fixed on the left side of the rotating ring. Depending on the required number of cable sheath layers, multiple stacking molds and fixed molds are fixedly connected. In this way, the molten material is extruded and formed into the first layer of sheath outside the conductor through the fixed mold. Then, the molten material can be extruded and formed into the second layer of sheath on the first layer of sheath through the stacking mold. By following the above operation, the cable sheath can be made according to the required number of cable sheath layers.

[0006] Furthermore, both the fixed mold and the stacking mold have cooling grooves inside, and the fixed mold and the stacking mold have liquid inlet grooves and liquid outlet grooves inside, respectively. The liquid inlet grooves and liquid outlet grooves are connected to the cooling grooves, which can accelerate the cooling of the melt and facilitate the cooling and forming of the melt after it comes into contact with the wire.

[0007] Furthermore, the cooling groove has a spiral structure, which can increase the cooling rate.

[0008] Furthermore, the rotating ring is provided with fastening screws, and multiple fastening screws are respectively screwed to the fixed mold and the superimposed mold, so as to fix the rotating ring and the rotating extrusion plate and prevent loosening.

[0009] Furthermore, the feed inlet has a frustum-shaped structure, which facilitates the entry of the melt.

[0010] Furthermore, the outer walls of the fixed mold and the stacking mold are provided with multiple placement slots on the left side of the rotating groove, which allows the rotating extrusion plate to enter and facilitates the insertion of the insert plate into the slot. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the superimposed mold in this utility model; Figure 3 This is a side view of the fixed mold and inner cylinder in this utility model. Figure 4 This is a cross-sectional view of the fixed mold and inner cylinder in this utility model; Figure 5 This is a schematic diagram of the structure of this utility model from below; Figure 6 This is a schematic diagram of the structure of the transfer ring and rotating extrusion plate in this utility model.

[0012] The attached diagram lists the components represented by each number as follows: 1. Slot; 2. Rotary ring; 3. Placement slot; 4. Fastening screw; 5. Liquid inlet slot; 6. Feed inlet; 7. Stacking mold; 8. Fixed mold; 9. Liquid outlet slot; 10. Rotating extrusion plate; 11. Rotating groove; 12. Insert plate; 13. Insert extrusion plate; 14. Guide groove; 15. Cooling groove. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0015] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0016] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0017] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0018] Example 1 Figure 1This is a schematic diagram of a cable sheath forming mold structure provided in an embodiment of the present utility model. Figure 2 This is a schematic diagram of the superimposed mold in this utility model. Figure 3 This is a side view of the fixed mold and inner cylinder in this utility model. Figure 6 This is a schematic diagram of the structure of the transfer ring and rotating extrusion plate in this utility model. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 As shown, the device includes a fixed mold 8, a stacking mold 7 on the right side of the fixed mold 8, multiple feed ports 6 on the outer side walls of both the fixed mold 8 and the stacking mold 7, and multiple guide grooves 14 on the inner side walls of both the fixed mold 8 and the stacking mold 7, which are connected to the feed ports 6. Multiple slots 1 are provided on the right side of both the fixed mold 8 and the stacking mold 7. A rotating groove 11 is provided on the outer side wall of the fixed mold 8 and the stacking mold 7. A rotating ring 2 is rotatably connected inside the rotating groove 11. Multiple insert plates 12 are fixed on the left side of the stacking mold 7. An insert extrusion plate 13 is fixed on the outer side wall of the insert plate 12. Multiple rotating extrusion plates 10 are fixed on the left side of the rotating ring 2. Fastening screws 4 are provided inside the rotating ring 2. The multiple fastening screws 4 are screwed to the fixed mold 8 and the stacking mold 7 respectively. The feed port 6 is a frustum-shaped structure. Multiple placement slots 3 are provided on the outer side wall of the fixed mold 8 and the stacking mold 7 on the left side of the rotating groove 11.

[0019] Depending on the required number of cable sheath layers, multiple stacking molds 7 and fixed molds 8 are fixedly connected. Insert plate 12 is inserted into slot 1. Rotate rotating ring 2, which rotates the rotating extrusion plate 10. The rotating extrusion plate 10 extrudes and inserts the extrusion plate 13. Then, use fastening screws 4 to fix rotating ring 2. This can fix insert plate 12 and stacking mold 7. It is simple and convenient. According to the above operation, the stacking molds 7 are fixedly connected. In this way, the conductor passes through the fixed mold 8. The melt is extruded and formed on the outside of the conductor by the fixed mold 8 to form the first layer of sheath. Then, the conductor passes through the melt and can be extruded and formed a second layer of sheath on the first layer of sheath by the stacking mold 7. According to the above operation, the cable sheath can be made according to the required number of cable sheath layers.

[0020] Example 2 Based on Embodiment 1, the present invention can be further improved as follows, such as... Figure 4 and Figure 5As shown, both the fixed mold 8 and the stacking mold 7 have cooling tanks 15 inside. The fixed mold 8 and the stacking mold 7 have liquid inlet tanks 5 and liquid outlet tanks 9 inside, respectively. The liquid inlet tanks 5 and liquid outlet tanks 9 are connected to the cooling tanks 15, which have a spiral structure. The coolant enters from the liquid inlet tank 5 and then enters the interior of the cooling tank 15 to cool the fixed mold 8 and the stacking mold 7. This allows the low temperature to be transferred to the melt, reducing the temperature of the melt. After the melt comes into contact with the wire, the cooling speed of the melt is accelerated, which facilitates the molding of the melt.

[0021] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A cable sheath forming mold, comprising a fixed mold (8), a stacking mold (7) provided on the right side of the fixed mold (8), a plurality of feed ports (6) being provided on the outer sidewalls of the fixed mold (8) and the stacking mold (7), and a plurality of guide grooves (14) being provided on the inner sidewalls of the fixed mold (8) and the stacking mold (7), wherein the guide grooves (14) and the feed ports (6) are connected; Multiple slots (1) are provided on the right side of both the fixed mold (8) and the stacking mold (7). Rotating grooves (11) are provided on the outer side walls of the fixed mold (8) and the stacking mold (7). A rotating ring (2) is rotatably connected inside the rotating groove (11). Multiple insert plates (12) are fixed on the left side of the stacking mold (7). Insertion extrusion plates (13) are fixed on the outer side walls of the insert plates (12). Multiple rotating extrusion plates (10) are fixed on the left side of the rotating ring (2).

2. A cable sheathing forming mould as claimed in claim 1, characterised in that: Cooling grooves (15) are provided inside both the fixed mold (8) and the stacking mold (7). Liquid inlet grooves (5) and liquid outlet grooves (9) are provided inside the fixed mold (8) and the stacking mold (7) respectively. Both the liquid inlet grooves (5) and the liquid outlet grooves (9) are connected to the cooling grooves (15).

3. A cable skin forming die according to claim 2, characterised in that: The cooling tank (15) has a spiral structure.

4. A cable sheathing forming mould as claimed in claim 1, characterised in that: The rotating ring (2) is provided with fastening screws (4), and multiple fastening screws (4) are respectively screwed to the fixing mold (8) and the stacking mold (7).

5. A cable sheathing forming mould as claimed in claim 1, characterised in that: The feed inlet (6) has a frustum-shaped structure.

6. A cable sheathing forming mould as claimed in claim 1, characterised in that: The outer walls of the fixed mold (8) and the stacking mold (7) are provided with multiple placement slots (3) on the left side of the rotating slot (11).

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