CN217573981U

CN217573981U - Special-shaped filling strip production device for two-core cable

Info

Publication number: CN217573981U
Application number: CN202220828781.3U
Authority: CN
Inventors: 王会康; 张大伟; 王野; 高琳
Original assignee: Qingdao Huadian High Voltage Electric Co ltd; Qingdao Hanhe Cable Co ltd
Current assignee: Qingdao Huadian High Voltage Electric Co ltd; Qingdao Hanhe Cable Co ltd
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-10-14
Anticipated expiration: 2032-04-11

Abstract

The application discloses a production device for a special-shaped filling strip for a two-core cable, which belongs to the field of cable processing equipment and solves the problem that the filling strip shape cannot meet the requirement of cable roundness due to unreasonable pressure distribution of sizing materials in the extrusion process of the conventional two-core cable filling strip; the filter plate is arranged in the die holder; the progressive die cavity is arranged between the filter plate and the special-shaped die, and the inner diameter of one end, close to the filter plate, of the progressive die cavity is gradually reduced from large to small from the inner diameter of one end, close to the special-shaped die, of the progressive die cavity. The utility model discloses a heterotypic packing strip apparatus for producing that two core cables were used can produce the packing strip for two core cables that meets the requirements, ensures when carrying out two core cables stranding, and the packing strip forms effective arc surface, satisfies the roundness requirement of stranding.

Description

Special-shaped filling strip production device for two-core cable

Technical Field

The utility model relates to a heterotypic packing strip apparatus for producing that two core cables were used belongs to cable processing equipment field.

Background

In recent years, with the development of national economy, the application of urban power transmission systems is continuously popularized, two-core cable products are used in urban power transmission systems, and filling strips are required to be used when cabling procedures are carried out on the products so as to meet the requirement on the roundness of the cable after cabling.

However, in actual production, be different from three-core cable and use the filler strip stranding, because of two-core cable structure particularity, when using the filler strip stranding, can be because the shape of filler strip is not round enough to can't satisfy the holistic circularity requirement of cable. The main reason is that the pressure of the sizing material cannot be reasonably distributed in the process of extruding the filling strip, so that the shape of the extruded filling strip cannot meet the design requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heterotypic packing strip apparatus for producing that two-core cable was used has overcome current two-core cable packing strip extrusion in-process, can not satisfy the problem that the cable roundness required because of the unreasonable packing strip shape that leads to of sizing material pressure distribution.

The technical scheme adopted by the utility model is that the special-shaped filler strip production device for the two-core cable comprises a filter plate and a special-shaped die, wherein the filter plate and the special-shaped die are arranged at intervals in parallel, a plurality of material holes are arranged on the filter plate, and a special-shaped forming hole is arranged in the middle of the special-shaped die;

the special-shaped die is arranged at an opening at one end of the die holder, and an opening at the other end of the die holder is connected with a discharge hole of the extruder; the filter plate is arranged in the die holder; a progressive die cavity is arranged in the die holder and is arranged between the filter plate and the special-shaped die, and the inner diameter of one end, close to the filter plate, of the progressive die cavity is gradually reduced from large to small; the material holes on the filter plate and the special-shaped forming holes on the special-shaped die are respectively matched with openings at two ends of the progressive die cavity.

Preferably, the special-shaped mold comprises a threaded connection sleeve and a special-shaped mold cylinder, one end of the special-shaped mold cylinder is a special-shaped template, the other end of the special-shaped mold cylinder is provided with an opening and is fixedly connected with the threaded connection sleeve, and the threaded connection sleeve is sleeved at one end of the mold base and is in threaded connection with the mold base.

Preferably, in the production device of the special-shaped filling strip for the two-core cable, an internal conical cavity is arranged in the special-shaped die cylinder, and the conical bottom end surface of the internal conical cavity faces the die holder; the inner conical cavity is communicated with the progressive die cavity and connected into a stepped gradually-changed cavity.

Preferably, the production device of the special-shaped filling strip for the two-core cable has the taper angle range of the inner conical cavity of 8-14 degrees.

Preferably, in the production device of the special-shaped filling strip for the two-core cable, one end inside the die holder is a progressive die cavity, the other end inside the die holder is a threaded section, a conical surface is arranged between the progressive die cavity and the threaded section, and the progressive die cavity, the conical surface and the threaded section are arranged in a stepped manner; the annular side surface of the filter plate is matched with the conical surface, the thread section is sleeved on the discharge port of the extruder and is in threaded connection with the discharge port of the extruder, and the conical bottom end surface of the conical surface is arranged towards the discharge port of the extruder.

Preferably, the production device of the special-shaped filling strip for the two-core cable has a conical surface angle of 10 degrees.

Preferably, the production device of the special-shaped filling strip for the two-core cable has a gradual mold cavity with a conical surface angle of 12 degrees.

Optimized, the filter is equallyd divide for the non-filter to heterotypic filler strip apparatus for producing that above-mentioned two core cables were used, and the material hole includes material hole one and material hole two, and material hole one sets up in the middle part of filter, and material hole two sets up in the outer lane department of filter, and the aperture of material hole one is greater than the aperture of material hole two.

The application has the advantages that:

according to the technical scheme, the two-core cable filling strip is evenly distributed in pressure by matching a series of dies, a rubber material shunt which is necessary in the extrusion process of general rubber materials is not needed, and the production cost is greatly reduced. And when producing two core cable filler strips of different specifications, only need to change the heterotypic mould that corresponds the specification can, need not to change other parts, can effectively improve production efficiency, and the heterotypic mould passes through threaded connection with the die holder, dismantles simple to operate.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic structural view of the filter plate of the present application.

Detailed Description

The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

As shown in the figures, the utility model relates to a special-shaped filler strip production device for a two-core cable, which comprises a cylindrical die holder 2, a filter plate 1 and a special-shaped die 7, wherein the filter plate 1 and the special-shaped die 7 are arranged in parallel at intervals, a plurality of material holes are arranged on the filter plate 1, and a special-shaped forming hole is arranged in the middle of the special-shaped die 7; the special-shaped die 7 is arranged at an opening at one end of the die holder 2, and an opening at the other end of the die holder 2 is connected with a discharge port of the extruder; the filter plate 1 is arranged in the die holder 2; a progressive die cavity 6 is arranged in the die holder 2, the progressive die cavity 6 is arranged between the filter plate 1 and the special-shaped die 7, and the inner diameter of the progressive die cavity 6 close to one end of the filter plate 1 is gradually changed from large to small to the inner diameter of the progressive die cavity 6 close to one end of the special-shaped die 7; the material holes on the filter plate 1 and the special-shaped forming holes on the special-shaped die 7 are respectively matched with openings at two ends of the progressive die cavity 6.

In this embodiment, after the rubber material extruded from the discharge port of the extruder passes through the filter plate 1, the die holder 2 and the special die 7 in sequence, the pressure distribution of the rubber material can be effectively improved through the shunting of the filter plate 1 and the progressive die cavity 6 in the die holder 2, so that the pressure of the rubber material at the die port meets the shape requirement, and a qualified product is extruded.

The device formed by the series of moulds can produce the filling strip for the two-core cable meeting the requirements, ensures that the filling strip forms an effective arc surface when the two-core cable is cabled, and meets the requirement of the roundness of the cabled cable.

The special-shaped die 7 comprises a threaded connection sleeve 7-1 and a special-shaped die cylinder 7-2, one end of the special-shaped die cylinder 7-2 is a special-shaped template, the other end of the special-shaped die cylinder 7-2 is provided with an opening and is fixedly connected with the threaded connection sleeve 7-1, and the threaded connection sleeve 7-1 is sleeved at one end of the die holder 2 and is in threaded connection with the die holder 2.

The thread connecting sleeve 7-1 of the special-shaped die 7 is in threaded connection with the die holder 2, so that the connecting strength is high, and the special-shaped dies 7 of different specifications can be replaced conveniently. The middle part of the special-shaped template of the special-shaped die 7 is provided with a special-shaped forming opening, and the feeding part of the special-shaped forming opening needs to be chamfered, wherein the chamfer size is R8.

An internal tapered cavity 7-3 is arranged in the special-shaped die cylinder 7-2, and the tapered bottom end surface of the internal tapered cavity 7-3 faces the interior of the die holder 2; the inner conical cavity 7-3 is communicated with the progressive die cavity 6 and is connected into a cavity with a step-type gradual change. The taper angle of the internal tapered cavity 7-3 ranges from 8 ° to 14 °.

The inner conical cavity 7-3 in the special-shaped die cylinder 7-2 and the progressive die cavity 6 form a stepped gradually-changed cavity, so that the pressure distribution of the rubber is further improved, the pressure of the rubber at the die opening meets the shape requirement, and a qualified product is extruded. The structure can effectively ensure the pressure stability of the sizing material without a flow divider and can extrude a product according to the shape of the die orifice of the special-shaped die.

One end inside the die holder 2 is a progressive die cavity 6, the other end inside the die holder 2 is a threaded section, a conical surface 5 is arranged between the progressive die cavity 6 and the threaded section, and the progressive die cavity 6, the conical surface 5 and the threaded section are arranged in a stepped manner; the annular side surface of the filter plate 1 is matched with the conical surface 5, the thread section is sleeved on the discharge port of the extruder and is in threaded connection with the discharge port of the extruder, and the conical bottom end face of the conical surface 5 faces the discharge port of the extruder. The taper angle of the tapered surface 5 is 10 °. The progressive cavity 6 has a taper angle of 12 °.

The progressive die cavity 6, the conical surface 5 and the thread section are arranged in a stepped manner, so that the internal sizing material is gradually pressurized in the flowing process, the pressure distribution of the sizing material is further improved, and the forming quality of a product is improved.

The filter is equallyd divide the filter for the non, and the material hole includes material hole one 3 and material hole two 4, and material hole one 3 sets up in the middle part of filter 1, and material hole two 4 sets up in the outer lane department of filter 1, and the aperture of material hole one 3 is greater than the aperture of material hole two 4.

The filter plate 1 is non-uniformly distributed with a first material hole 3 and a second material hole 4 with different apertures, and the width-height ratio of the filler strip for the two-core cable is large, so that the material is reasonably distributed during extrusion, and the material holes in the filter plate are in a non-uniform distribution mode with a large aperture at the middle part and a small aperture at the outer ring.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also understand that the changes, modifications, additions or substitutions made within the scope of the present invention should belong to the protection scope of the present invention.

Claims

1. A production device for a special-shaped filling strip for a two-core cable comprises a filter plate (1) and a special-shaped die (7), wherein the filter plate (1) and the special-shaped die (7) are arranged in parallel at intervals, a plurality of material holes are formed in the filter plate (1), and a special-shaped forming hole is formed in the middle of the special-shaped die (7); the method is characterized in that: the special die is characterized by further comprising a cylindrical die holder (2), wherein the special die (7) is arranged at an opening at one end of the die holder (2), and an opening at the other end of the die holder (2) is connected with a discharge hole of the extruder; the filter plate (1) is arranged in the die holder (2); a progressive die cavity (6) is arranged in the die holder (2), the progressive die cavity (6) is arranged between the filter plate (1) and the special-shaped die (7), and the inner diameter of one end, close to the filter plate (1), of the progressive die cavity (6) is gradually changed from large to small to the inner diameter of one end, close to the special-shaped die (7), of the progressive die cavity (6); the material holes on the filter plate (1) and the special-shaped forming holes on the special-shaped die (7) are respectively matched with openings at two ends of the progressive die cavity (6).

2. The apparatus for producing a profile filler strip for a two-core cable according to claim 1, wherein: the special-shaped die (7) comprises a threaded connection sleeve (7-1) and a special-shaped die cylinder body (7-2), one end of the special-shaped die cylinder body (7-2) is a special-shaped template, the other end of the special-shaped die cylinder body (7-2) is provided with an opening and is fixedly connected with the threaded connection sleeve (7-1), and the threaded connection sleeve (7-1) is sleeved at one end of the die holder (2) and is in threaded connection with the die holder (2).

3. The apparatus for producing a profile filler strip for a two-core cable according to claim 2, wherein: an internal conical cavity (7-3) is arranged in the special-shaped die cylinder (7-2), and the conical bottom end face of the internal conical cavity (7-3) faces the die holder (2); the inner conical cavity (7-3) is communicated with the progressive die cavity (6) and is connected into a stepped and gradually changed cavity.

4. The apparatus for producing a profile filler strip for a two-core cable according to claim 3, wherein: the inner conical cavity (7-3) has a cone angle in the range of 8 ° to 14 °.

5. The apparatus for producing a profile filler strip for a two-core cable according to claim 1, wherein: one end inside the die holder (2) is a progressive die cavity (6), the other end inside the die holder (2) is a threaded section, a conical surface (5) is arranged between the progressive die cavity (6) and the threaded section, and the progressive die cavity (6), the conical surface (5) and the threaded section are arranged in a stepped manner; the annular side surface of the filter plate (1) is matched with the conical surface (5), the thread section is sleeved on the discharge port of the extruder and is in threaded connection with the discharge port of the extruder, and the conical bottom end surface of the conical surface (5) faces the discharge port of the extruder.

6. The apparatus for producing a profile filler strip for a two-core cable according to claim 5, wherein: the conical surface angle of the conical surface (5) is 10 degrees.

7. The apparatus for producing a profile filler strip for a two-core cable according to claim 1, wherein: the angle of the conical surface of the progressive cavity (6) is 12 degrees.

8. The apparatus for producing a profile filler strip for a two-core cable according to claim 1, wherein: the filter is equallyd divide the filter for the non-in filter (1), and the material hole includes material hole (3) and material hole two (4), and material hole (3) set up in the middle part of filter (1), and material hole two (4) set up in the outer lane department of filter (1), and the aperture of material hole (3) is greater than the aperture of material hole two (4).