CN-224203894-U - Split type superfine wire insulation extrusion internal mold structure

CN224203894UCN 224203894 UCN224203894 UCN 224203894UCN-224203894-U

Abstract

The utility model relates to the technical field of wire insulation extrusion dies, in particular to a split type superfine wire insulation extrusion die structure. The novel extrusion die comprises an extrusion die main body and an extrusion die needle matched with the extrusion die main body for connection, wherein an inner connecting part matched with the extrusion die needle is arranged at the front end of the inner diameter of the extrusion die main body, a connecting block is arranged at the rear end of the extrusion die needle in an outward extending mode, a hole slot communicated with a threading hole is formed in the connecting block, an outer connecting part is arranged on the outer surface of the connecting block, the outer connecting part of the connecting block is arranged in the extrusion die main body, and the outer connecting part is in contact with the inner connecting part. The split type mechanism is divided into the extrusion internal mold main body and the extrusion internal mold needle, the extrusion internal mold main body and the extrusion internal mold needle can be connected quickly, the mold needle is detached and replaced, the mold body is not replaced, the total length of the split type internal mold needle is short, the concentricity is good during turning, and the drilling difficulty is reduced.

Inventors

Tang yuanyang
ZHANG QIANGQIANG
ZHU YUNCHUAN

Assignees

江苏安胜达航天科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20250227

Claims (7)

1. The split type superfine wire insulation extrusion internal mold structure is characterized by comprising an extrusion internal mold main body and an extrusion internal mold needle matched with the extrusion internal mold main body for connection, wherein an internal connection part matched with the extrusion internal mold needle is arranged at the front end of the inner diameter of the extrusion internal mold main body, a connecting block is arranged at the rear end of the extrusion internal mold needle in an outward extending mode, a hole slot communicated with a threading hole is formed in the connecting block, an external connection part is arranged on the outer surface of the connecting block, the external connection part of the connecting block is arranged in the extrusion internal mold main body, and the external connection part and the internal connection part are in mutual contact.
2. The split type superfine wire insulation extrusion internal mold structure of claim 1, wherein the extrusion internal mold needle is internally provided with a threading hole.
3. The split type superfine wire insulation extrusion internal mold structure of claim 1, wherein the external connection part of the extrusion internal mold needle and the internal connection part of the extrusion internal mold main body are connected by embedding, screw connection or brazing.
4. The split type superfine wire insulation extrusion internal mold structure of claim 1, wherein the outer connecting portion is a screw thread, the inner connecting portion is a screw thread, and the inner connecting portion is connected with the outer connecting portion through the screw thread.
5. The split type superfine wire insulation extrusion internal mold structure as claimed in claim 1, wherein the outer connecting part is of a convex structure, the inner connecting part is of a groove structure, and the outer connecting part is embedded into the groove structure.
6. The split type superfine wire insulation extrusion internal mold structure of claim 1, wherein the outer connecting portion is of a groove structure, the inner connecting portion is of a protruding mechanism, and the protruding mechanism of the inner connecting portion is embedded into the groove structure of the outer connecting portion.
7. The split type extremely fine electric wire insulation extrusion internal mold structure as set forth in claim 1, wherein the outer connecting portion and the inner connecting portion are connected by welding.

Description

Split type superfine wire insulation extrusion internal mold structure Technical Field The utility model relates to the technical field of wire insulation extrusion dies, in particular to a split type superfine wire insulation extrusion die structure. Background The traditional cable insulation extrusion adopts a molding method of an inner mold and an outer mold. The inner mold is mainly responsible for fixing the flow direction of the conductor wire and the extruded material, and the outer mold is mainly responsible for controlling the extrusion outline dimension and the flow direction of the extruded material. Referring to fig. 1, a schematic cross-section of an extrusion inner mold and an extrusion outer mold in the prior art is shown, and the sizes of the extrusion inner mold and the extrusion outer mold are required to be very small in the process of extruding a very fine cable. For example, referring to the 4AWG wire of UL standard, the nominal diameter of the conductor wire is 0.05mm, the extrusion outer diameter of the insulating layer is 0.11mm, the diameter of the inner hole of the extrusion internal mold is 0.25mm, the outer diameter of the pipe orifice of the main body of the extrusion internal mold is 0.5mm, the length of the pipe of the main body of the extrusion internal mold is 5mm, the length of the connecting part of the root of the pipe is 3mm, and the tubular wall thickness of the pipe opening of the internal mold is 0.125mm. For the internal mold, the manufacturing and processing difficulty is very high, so that the manufacturing cost of the mold is as high as ten thousand yuan. The inner die wall is very thin, the length of the drilled hole is required to reach 8mm, the length-diameter ratio is up to 32 times, the drilled hole is easy to damage, and slight deformation is caused by slight touch. Resulting in high production costs of the mould and very easy damage. Therefore, a split type superfine wire insulation extrusion internal mold structure needs to be designed to solve the problems. Disclosure of utility model The utility model aims to provide a split type superfine wire insulation extrusion internal mold structure so as to overcome the defects in the prior art. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a split type superfine electric wire insulation extrusion internal mold structure, its includes extrusion internal mold main part, cooperation extrusion internal mold main part is connected extrude internal mold mould the internal diameter front end of extrusion internal mold main part is provided with the internal connection portion that the internal mold needle was extruded in the cooperation extrusion internal mold needle's rear end outwards extends to be provided with the connecting block, just seted up the hole groove that is linked together with the through wires hole in the connecting block, the surface of connecting block is provided with outer connecting portion, the outer connecting portion of connecting block is arranged in the extrusion internal mold main part, just outer connecting portion with contact each other between the internal connection portion. Preferably, a threading hole is formed in the extrusion inner die needle. Preferably, the outer connecting part of the extrusion inner die needle and the inner connecting part of the extrusion inner die main body are connected in a mosaic way, a thread way or a brazing way. Preferably, the outer connecting portion is a screw thread, the inner connecting portion is a screw thread, and the inner connecting portion is connected with the outer connecting portion through the screw thread. Preferably, the outer connecting portion is of a convex structure, the inner connecting portion is of a groove structure, and the outer connecting portion is embedded into the groove structure. Preferably, the outer connecting portion has a groove structure, the inner connecting portion has a protrusion mechanism, and the protrusion mechanism of the inner connecting portion is embedded into the groove structure of the outer connecting portion. Preferably, the outer connection portion and the inner connection portion are connected by welding. The split type mechanism is divided into the extrusion internal mold main body and the extrusion internal mold needle, the extrusion internal mold main body and the extrusion internal mold needle can be quickly connected, the extrusion internal mold needle and the extrusion internal mold needle can be quickly connected in a manner of inlaid connection, screw connection or brazing connection, and the like. Drawings FIG. 1 is a schematic cross-sectional view of an extrusion die of the prior art; FIG. 2 is a schematic illustration of the extrusion die body of a split ultra-fine wire insulation extrusion die structure according to the present utility model; FIG. 3 is a schematic view of an extrusion die needle of a spl