Cable extrusion mold

Abstract

The utility model discloses a cable extrusion mold which comprises a base, a mold core, a mold sleeve, a cooling ring and a cooling mechanism, the end part of the mold core is embedded into the rear end of the mold sleeve, and the cooling ring is arranged at the front end of the mold sleeve; the cooling ring is sleeved with the cooling mechanism, the cooling mechanism comprises symmetrically-arranged fixing plates, connecting plates and a plurality of water guide pipes installed on the outer walls of the fixing plates, the fixing plates are of an arc-shaped structure and are symmetrically distributed, cooling cavities communicating with the interiors of the water guide pipes are formed in the fixing plates, and water guide blocks are installed on the outer walls of the water guide pipes. According to the utility model, the cooling mechanism is arranged outside the cooling ring, and a plurality of cooling cavities are formed in the cooling mechanism, so that the temperature of the cooling cavities can be independently adjusted, an extruded cable plastic layer can be continuously cooled, the cable extrusion molding speed is accelerated, and the molding quality is improved; and the problems that the plastic layer becomes loose due to incomplete cooling, bubbles are likely to appear, and the uniformity and smoothness of the plastic layer are affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable production equipment, in particular to a cable extrusion die. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are used for transmission and distribution in the trunk lines of power systems. With the development of society, electricity consumption has also increased, requiring the current carrying capacity of cables to be larger and larger, and the cross-section of the conductive core of high-voltage power cables has continued to increase.

[0003] When the existing extrusion mold completes extrusion, the cable plastic layer is not cooled well after leaving the extrusion mold, and the plastic layer expands, causing the plastic layer to become loose and prone to bubbles, affecting the uniformity and smoothness of the plastic layer, and affecting the reliability and service life of the cable. Therefore, a cable extrusion mold is proposed. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a cable extrusion die, which solves the problem that when the existing extrusion die completes extrusion, the cable plastic layer is not well cooled after leaving the extrusion die, and the plastic layer expands, causing the plastic layer to become loose and prone to bubbles, affecting the uniformity and smoothness of the plastic layer, and thus affecting the reliability and service life of the cable.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a cable extrusion mold, including a base, a mold core, a mold sleeve, a cooling ring and a cooling mechanism, the end of the mold core is embedded in the rear end of the mold sleeve, the cooling ring is installed at the front end of the mold sleeve, the cooling mechanism is sleeved on the cooling ring and the cooling mechanism includes a symmetrically arranged fixed plate, a connecting plate and a plurality of water pipes installed on the outer wall of the fixed plate, the fixed plate is an arc-shaped structure and is symmetrically distributed, a cooling cavity connected to the inside of the water pipe is opened inside the fixed plate, a water guide block is installed on the outer wall of the water pipe, a water tank is installed on the top surface of the base, a plurality of temperature regulating boxes corresponding to the water pipe are arranged on the top of the water tank, telescopic tubes are symmetrically installed on the top of the temperature regulating box and the upper ends of the telescopic tubes are fixedly connected to the water guide blocks.

[0008] As a further preferred embodiment of the present invention, a pump is installed at the inner bottom of the water tank, a water guide plate is installed at the inner top of the water tank, a conduit is installed at the bottom of the water guide plate and the end of the conduit is connected to the liquid output end of the pump.

[0009] As a further preferred embodiment of the present invention, the middle part of the temperature regulating box is divided into a liquid inlet chamber and a liquid outlet chamber by a partition, flow channels are formed on both sides of the inside of the liquid inlet chamber and the liquid outlet chamber, and two temperature regulating plates are installed on the side walls of the temperature regulating box.

[0010] As a further preferred embodiment of the present invention, the connecting plate is fixedly mounted on the end of the fixing plate, and the two connecting plates that fit each other are fixed by bolts.

[0011] As a further preferred embodiment of the present invention, a joint is arranged on the surface of one of the fixing plates, and an interface is arranged on the surface of the other fixing plate, and the joint is connected with the interface by embedding.

[0012] As a further preferred embodiment of the present invention, a column is vertically mounted on the top surface of the base, and the column is a telescopic structure and the upper end of the column is connected to the bottom of the mold sleeve.

[0013] (III) Beneficial effects

[0014] The utility model provides a cable extrusion die, which has the following beneficial effects:

[0015] The utility model provides a cooling mechanism outside the cooling ring, and forms a plurality of cooling chambers in the cooling mechanism. The temperature of the cooling chambers can be independently adjusted, and the extruded cable plastic layer can be continuously cooled, thereby accelerating the cable extrusion molding speed, improving the molding quality, and reducing the problems of the plastic layer becoming loose, bubbles being easily generated, and the uniformity and smoothness of the plastic layer being affected due to incomplete cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of the cable extrusion die of the utility model;

[0017] Figure 2 This is an internal and external structural diagram of the cooling mechanism of the utility model;

[0018] Figure 3 It is a cross-sectional view of the fixing plate of the utility model;

[0019] Figure 4 This is a diagram of the internal structure of the water tank of the utility model.

[0020] In the figure: 1. mold core; 2. mold sleeve; 3. cooling mechanism; 4. cooling ring; 5. base; 6. column; 7. water tank; 8. temperature regulating box; 9. telescopic pipe; 10. water guide block; 11. water guide pipe; 12. connecting plate; 13. fixing plate; 14. joint; 15. interface; 16. cooling chamber; 17. temperature regulating plate; 18. flow channel; 19. water guide plate; 20. pump. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model embodiment provides a technical solution: a cable extrusion mold, including a base 5, a mold core 1, a mold sleeve 2, a cooling ring 4 and a cooling mechanism 3, the end of the mold core 1 is embedded in the rear end of the mold sleeve 2, the cooling ring 4 is installed at the front end of the mold sleeve 2, the cooling mechanism 3 is sleeved on the cooling ring 4 and the cooling mechanism 3 includes a symmetrically arranged fixed plate 13, a connecting plate 12 and a plurality of water guide pipes 11 installed on the outer wall of the fixed plate 13, the cooling mechanism 3 continuously cools the cooling ring 4 to ensure the cooling quality, the fixed plate 13 is an arc-shaped structure and is symmetrically distributed. A cooling chamber 16 connected to the inside of the water pipe 11 is opened inside the fixed plate 13. A cooling liquid continuously circulates in the cooling chamber 16. A water guide block 10 is installed on the outer wall of the water pipe 11. A water tank 7 is installed on the top surface of the base 5. The water tank 7 is filled with cooling liquid and circulated through a pump 20. A plurality of temperature regulating boxes 8 corresponding to the water pipe 11 are arranged on the top of the water tank 7. Telescopic tubes 9 are symmetrically installed on the top of the temperature regulating box 8, and the upper ends of the telescopic tubes 9 are fixedly connected to the water guide block 10.

[0023] As a further improvement, a pump 20 is installed at the inner bottom of the water tank 7, a water guide plate 19 is installed at the inner top of the water tank 7, a conduit is installed at the bottom of the water guide plate 19 and the end of the conduit is connected to the liquid output end of the pump 20, and the pump 20 discharges the cooling water and introduces it into the liquid outlet cavity through the water guide plate 19.

[0024] As a further improvement, the middle part of the temperature control box 8 is divided into a liquid inlet chamber and a liquid outlet chamber by a partition, and flow channels 18 are formed on both sides of the inside of the liquid inlet chamber and the liquid outlet chamber. Two temperature control plates 17 are installed on the side walls of the temperature control box 8. The temperature control plates 17 are semiconductor refrigeration plates that cool the cooling water and adjust the temperature of the cooling water by adjusting the output power.

[0025] As a further improvement, the connecting plate 12 is fixedly mounted on the end of the fixing plate 13, and the two connecting plates 12 that fit each other are fixed by bolts, so the installation operation is simple.

[0026] As a further improvement, a joint 14 is provided on the surface of one of the fixed plates 13, and an interface 15 is provided on the surface of the other fixed plate 13. The joint 14 and the interface 15 are inlaid and connected. After the joint 14 and the interface 15 are inlaid and connected, two symmetrically arranged cooling chambers 16 are connected to each other, and the coolant enters the cooling chamber 16 on one side and is discharged from the other side.

[0027] As a further improvement, a column 6 is vertically installed on the top surface of the base 5. The column 6 is a telescopic structure and the upper end is connected to the bottom of the mold sleeve 2. The mold sleeve 2 is supported by the column 6, and the column 6 can be telescopically adjusted to adjust the height of the mold sleeve 2.

[0028] Working principle: During the continuous extrusion of the cable plastic layer, the pump 20 drives the liquid inside the water tank 7 to enter the water guide plate 19. The water guide plate 19 guides the liquid into the liquid outlet cavity respectively. When passing through the flow channel 18 in the liquid outlet cavity, it contacts the temperature regulating plate 17 and adjusts the temperature. It is introduced into the water guide pipe 11 through the telescopic tube 9 and enters the cooling cavity 16 to cool the cooling ring 4. During the cooling process, it enters the cooling cavity 16 on the other side through the joint 14, and returns to the temperature regulating box 8 through the telescopic tube 9 on the other side. After temperature adjustment through the flow channel 18 in the liquid inlet cavity, it returns to the water tank 7 for circulation.

[0029] The components of the utility model are 1, mold core; 2, mold sleeve; 3, cooling mechanism; 4, cooling ring; 5, base; 6, column; 7, water tank; 8, temperature regulating box; 9, telescopic pipe; 10, water guide block; 11, water guide pipe; 12, connecting plate; 13, fixing plate; 14, joint; 15, interface; 16, cooling chamber; 17, temperature regulating plate; 18, flow channel; 19, water guide plate; 20, pump, all of which are universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods. The problem solved by the utility model is that when the existing extrusion mold is extruded, the plastic layer of the cable leaves After the extrusion mold, if it is not well cooled, the plastic layer will expand, causing the plastic layer to become loose and prone to bubbles, affecting the uniformity and smoothness of the plastic layer, and affecting the reliability and service life of the cable. The utility model combines the above-mentioned components with each other. The utility model arranges a cooling mechanism 3 outside the cooling ring 4, and forms a plurality of cooling chambers 16 in the cooling mechanism 3. The cooling chambers 16 can be independently temperature-controlled, and the extruded cable plastic layer can be continuously cooled, thereby accelerating the cable extrusion molding speed, improving the molding quality, and reducing the problems of the plastic layer becoming loose, prone to bubbles, and affecting the uniformity and smoothness of the plastic layer due to incomplete cooling.

[0030] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cable extrusion die, comprising a base (5), a die core (1), a die sleeve (2), a cooling ring (4) and a temperature reduction mechanism (3), characterized in that: The end of the mold core (1) is embedded in the rear end of the mold sleeve (2), the cooling ring (4) is installed at the front end of the mold sleeve (2), the cooling mechanism (3) is sleeved on the cooling ring (4), and the cooling mechanism (3) comprises a symmetrically arranged fixing plate (13), a connecting plate (12), and a plurality of water pipes (11) installed on the outer wall of the fixing plate (13), the fixing plate (13) is in an arc-shaped structure and is symmetrically distributed, a cooling chamber (16) connected to the inside of the water pipe (11) is provided inside the fixing plate (13), a water guide block (10) is installed on the outer wall of the water pipe (11), a water tank (7) is installed on the top surface of the base (5), a plurality of temperature regulating boxes (8) corresponding to the water pipe (11) are arranged on the top of the water tank (7), telescopic tubes (9) are symmetrically installed on the top of the temperature regulating box (8), and the upper end of the telescopic tube (9) is fixedly connected to the water guide block (10).

2. A cable extrusion die according to claim 1, characterized in that: A pump (20) is installed at the inner bottom of the water tank (7), a water guide plate (19) is installed at the inner top of the water tank (7), a conduit is installed at the bottom of the water guide plate (19), and the end of the conduit is connected to the liquid output end of the pump (20).

3. A cable extrusion die according to claim 1, characterized in that: The middle part of the temperature regulating box (8) is divided into a liquid inlet chamber and a liquid outlet chamber by a partition, and flow channels (18) are formed on both sides of the inside of the liquid inlet chamber and the liquid outlet chamber. Two temperature regulating plates (17) are installed on the side walls of the temperature regulating box (8).

4. A cable extrusion die according to claim 1, characterized in that: The connecting plate (12) is fixedly mounted on the end of the fixing plate (13), and the two connecting plates (12) that fit each other are fixed by bolts.

5. A cable extrusion die according to claim 1, characterized in that: A joint (14) is provided on the surface of one of the fixing plates (13), and an interface (15) is provided on the surface of the other fixing plate (13), and the joint (14) and the interface (15) are embedded and connected.

6. A cable extrusion die according to claim 1, characterized in that: A column (6) is vertically mounted on the top surface of the base (5); the column (6) is a telescopic structure and the upper end is connected to the bottom of the mold sleeve (2).

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