CN110920022A - Automatic centering extrusion die - Google Patents

Automatic centering extrusion die Download PDF

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Publication number
CN110920022A
CN110920022A CN201911299746.6A CN201911299746A CN110920022A CN 110920022 A CN110920022 A CN 110920022A CN 201911299746 A CN201911299746 A CN 201911299746A CN 110920022 A CN110920022 A CN 110920022A
Authority
CN
China
Prior art keywords
centering
sleeve
mold core
die
inner mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201911299746.6A
Other languages
Chinese (zh)
Inventor
白树盛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Shenglong Wire And Cable Co Ltd
Original Assignee
Shenyang Shenglong Wire And Cable Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang Shenglong Wire And Cable Co Ltd filed Critical Shenyang Shenglong Wire And Cable Co Ltd
Priority to CN201911299746.6A priority Critical patent/CN110920022A/en
Publication of CN110920022A publication Critical patent/CN110920022A/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • B29C48/327—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections with centering means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3462—Cables

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention discloses an automatic centering extrusion die, which comprises an outer die sleeve and an inner die core, wherein an extrusion channel is formed between the outer side of the front end of the inner die core and a discharge hole of the outer die sleeve; the rear end of the inner mold core is arranged in the through hole of the positioning seat, and an elastic layer is arranged between the outer side of the rear end of the inner mold core and the through hole of the positioning seat. The invention has the advantages that: the inner mold core is abutted to the positioning hole of the centering sleeve by utilizing the reaction force generated when the plastic is extruded, the centering sleeve and the positioning seat are fixed into a whole, and the inner mold core and the outer mold sleeve are fixed after debugging before extrusion, so that the inner mold core always ensures centering, and the thickness uniformity of the outer insulating layer is further ensured.

Description

Automatic centering extrusion die
Technical Field
The invention relates to the technical field of cable manufacturing, in particular to a cable sheath extrusion die.
Background
The inner part of the cable is a metal conductor, the outer layer of the cable is a plastic insulating skin, and hot-melt plastic is covered on a metal conductor passing through the center of a die through an extrusion die generally; in the process of manufacturing the cable, the requirement on the thickness of the insulating sheath covered by the outer layer is high, because the quality of the cable is directly influenced if the thickness of the insulating layer is not uniform. The existing extrusion dies are not provided with an automatic centering structure, so that the problem that the outer side insulation thickness is uneven due to extrusion deviation of an inner die core of the die is very easy to occur when the extrusion die is used.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an extrusion die capable of automatically aligning and centering, and the specific technical scheme is as follows:
an automatic centering extrusion die comprises an outer die sleeve and an inner die core, wherein an extrusion channel is formed between the outer side of the front end of the inner die core and a discharge hole of the outer die sleeve, a centering inclined plane is arranged on the outer side of the rear end of the inner die core, the centering sleeve is sleeved on the outer side of the inner die core in a penetrating manner, and the inclination of the centering inclined plane is consistent with that of a positioning hole of the centering sleeve; the rear end of the inner mold core is arranged in the through hole of the positioning seat, and an elastic layer is arranged between the outer side of the rear end of the inner mold core and the through hole of the positioning seat.
The radial outer side of the centering sleeve is abutted against the inner side of the fixing ring, the fixing ring and the positioning seat are of an integral structure, and the centering sleeve and the positioning seat are fixed into a whole by the fixing screw.
The included angle between the centering inclined plane and the horizontal plane is 3-5 degrees.
The invention has the advantages that: the inner mold core is abutted to the positioning hole of the centering sleeve by utilizing the reaction force generated when the plastic is extruded, the centering sleeve and the positioning seat are fixed into a whole, and the inner mold core and the outer mold sleeve are fixed after debugging before extrusion, so that the inner mold core always ensures centering, and the thickness uniformity of the outer insulating layer is further ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings, wherein the front end refers to the right side of fig. 1, and the rear end refers to the left side of fig. 1. As shown in the figure, the hot-melt plastic extruder comprises an outer die sleeve 1 and an inner die core 3, wherein an extrusion channel 4 is formed between the outer side of the front end of the inner die core 3 and a discharge hole of the outer die sleeve, and the extrusion channel 4 corresponds to an output end 2 of the extruder so as to ensure that hot-melt plastic flows out through the extrusion channel 4;
a centering inclined plane 9 is arranged on the outer side of the rear end of the inner mold core 3, a centering sleeve 10 is sleeved on the outer side of the inner mold core 3 in a penetrating manner, and the inclination of the centering inclined plane 9 is consistent with that of a positioning hole 11 of the centering sleeve 10; the rear end of the inner mold core is arranged in the through hole of the positioning seat 7, an elastic layer 8 is arranged between the outer side of the rear end of the inner mold core 3 and the through hole of the positioning seat, and the elastic layer can be made of rubber.
The radial outer side of the centering sleeve 10 is abutted against the inner side of the fixing ring 13, the fixing ring 13 and the positioning seat 7 are of an integral structure and can be processed into an integral structure, the metal wire 6 is arranged in the central through hole 5 of the positioning seat, and the centering sleeve and the positioning seat are fixed into a whole by the fixing screw 12.
The included angle between the centering inclined plane and the horizontal plane is 3-5 degrees.
In operation, plastic flows along the direction of an arrow a, and the metal wire moves along the direction of an arrow b; the inner mold core 3 is abutted to the positioning hole 11 of the centering sleeve 10 by utilizing the reaction force F when the plastic is extruded, the centering sleeve and the positioning seat are fixed into a whole, and the centering sleeve and the outer mold sleeve are fixed after debugging before extrusion, so that the inner mold core always ensures centering, and the thickness uniformity of the outer insulating layer is further ensured.

Claims (3)

1. The utility model provides an automatic centering extrusion die, includes outer die sleeve, interior mold core, forms between the front end outside of interior mold core and the discharge gate of outer die sleeve and extrudes the passageway, its characterized in that: a centering inclined plane is arranged on the outer side of the rear end of the inner mold core, the centering sleeve is sleeved on the outer side of the inner mold core in a penetrating manner, and the inclination of the centering inclined plane is consistent with that of a positioning hole of the centering sleeve; the rear end of the inner mold core is arranged in the through hole of the positioning seat, and an elastic layer is arranged between the outer side of the rear end of the inner mold core and the through hole of the positioning seat.
2. The self-centering extrusion die of claim 1, wherein: the radial outer side of the centering sleeve is abutted against the inner side of the fixing ring, the fixing ring and the positioning seat are of an integral structure, and the centering sleeve and the positioning seat are fixed into a whole by the fixing screw.
3. The self-centering extrusion die of claim 1, wherein: the included angle between the centering inclined plane and the horizontal plane is 3-5 degrees.
CN201911299746.6A 2019-12-17 2019-12-17 Automatic centering extrusion die Withdrawn CN110920022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911299746.6A CN110920022A (en) 2019-12-17 2019-12-17 Automatic centering extrusion die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911299746.6A CN110920022A (en) 2019-12-17 2019-12-17 Automatic centering extrusion die

Publications (1)

Publication Number Publication Date
CN110920022A true CN110920022A (en) 2020-03-27

Family

ID=69862919

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911299746.6A Withdrawn CN110920022A (en) 2019-12-17 2019-12-17 Automatic centering extrusion die

Country Status (1)

Country Link
CN (1) CN110920022A (en)

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Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20200327

WW01 Invention patent application withdrawn after publication