CN203592661U - Double-layer co-extrusion die for nylon and polyethylene sheath - Google Patents
Double-layer co-extrusion die for nylon and polyethylene sheath Download PDFInfo
- Publication number
- CN203592661U CN203592661U CN201320810814.2U CN201320810814U CN203592661U CN 203592661 U CN203592661 U CN 203592661U CN 201320810814 U CN201320810814 U CN 201320810814U CN 203592661 U CN203592661 U CN 203592661U
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a double-layer co-extrusion die for a nylon and polyethylene sheath and belongs to the technical field of optical cable machining dies. The die is composed of a die sleeve and a die core, and a circular cone structure of the die core is installed in a circular cone hole of the die sleeve in a sleeved mode. A flow channel A and a flow channel B are manufactured in the outer surface of the die sleeve and connected through a flow distribution groove, and a polyethylene flow channel is formed between the die sleeve and the die core. The flow channel A is connected with a nylon feeding port, and the flow channel B is connected with a nylon discharging port. A middle die of a traditional double-layer co-extrusion die is omitted, the structure is simple, accessories are saved, the double-layer sheath is high in machining speed when extruded in a one-time mode, operation is convenient, moreover, the die can be matched with a common polyethylene extruding machine head, generality is high, and production cost is effectively reduced. The problems that according to an existing co-extrusion die for the nylon and polyethylene sheath, the mode that extruding is performed at twice is low in forming speed and production efficiency, the existing double-layer co-extrusion die is complex in structure and needs to be matched with a special machine head to be produced in a one-to-one mode, generality is poor, and production cost is high are solved.
Description
Technical field
The utility model relates to a kind of nylon and pe sheath double-layer coextrusion mould, belongs to optical cable processing mold technical field.
Background technology
The pe sheath skin of optical cable all can wrap up one deck nylon sheath wire conventionally again, effectively to prevent mouse, the destruction of ant to optical cable.At present nylon sheath wire is extruded in to optical cable pe sheath skin and generally has two kinds of modes: one is that first extrusion molding goes out layer of polyethylene sheath, after pe sheath moulding, then extrude one deck nylon sheath wire at pe sheath skin; Another kind is to adopt the double-layer coextrusion mould of core rod, intermediate die, die sleeve composition polyethylene and nylon to be extruded rear one-body molded simultaneously.Adopt first kind of way, the extrusion molding at twice of pe sheath and nylon sheath wire, has relatively high expectations to the surface quality after pe sheath moulding, and shaping speed is slow, and production efficiency is lower.Although adopt the one-shot forming of double-layer coextrusion mould energy, mould forms complicated, and needs to be equipped with special had, and versatility is poor, and general a kind of mould can only be processed a kind of optical cable of specification, and processing cost is high.
Summary of the invention
The purpose of this utility model is, provide a kind of die sleeve outer surface to be manufactured with two runners, between two runners, connect by splitter box, simple in structure, easy to process, without configure dedicated head, pe sheath and nylon sheath wire integrated molding speed are fast, the nylon that working (machining) efficiency is high and pe sheath double-layer coextrusion mould.
The utility model is to realize by the following technical solutions above-mentioned purpose
This nylon and pe sheath double-layer coextrusion mould are made up of die sleeve and core rod, it is characterized in that: in die sleeve, be manufactured with conical bore, outer surface one end of core rod is made into conical structure, and the conical structure of core rod is sleeved in the conical bore of die sleeve; Die sleeve outer surface is manufactured with runner A and runner B, between runner A and runner B, is connected by splitter box; Between die sleeve and core rod, be formed with polyethylene runner, runner A is connected with nylon charging aperture, and runner B is connected with nylon discharging opening.
The utility model beneficial effect is compared with prior art
This nylon and pe sheath double-layer coextrusion mould have saved the intermediate die of traditional double-deck co-extruding mould, only need to use core rod and die sleeve, simple in structure, have saved accessory.Meanwhile, two runners of A, B of making by die sleeve outer surface, realize the disposable extrusion molding of the two-layer sheath of nylon and polyethylene, and process velocity is fast, easy to operate.This nylon and pe sheath double-layer coextrusion mould can assemble common polythene extruder head, and applied widely, highly versatile, effectively reduces production cost.Solved that the mode shaping speed of extruding at twice in existing nylon and polyethylene co-extruding mould is slow, production efficiency is low, and existing double-layer coextrusion mould form complicated, need to be equipped with special had and produce one to one, versatility is poor, the problem that production cost is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of nylon and pe sheath double-layer coextrusion mould;
Fig. 2 is A-A sectional structure schematic diagram of Fig. 1.
In figure: 1, die sleeve, 2, core rod, 3, runner A, 4, runner B, 5, splitter box, 6, polyethylene runner, 7, nylon discharging opening, 8, conical bore, 9, conical structure.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail:
This nylon and pe sheath double-layer coextrusion mould are made up of die sleeve 1 and core rod 2, in die sleeve 1, be manufactured with conical bore 8, outer surface one end of core rod 2 is made into conical structure 9, the conical structure 9 of core rod 2 is sleeved in the conical bore 8 of die sleeve 1, between die sleeve 1 and core rod 2, be formed with a polyethylene runner 6, die sleeve 1 outer surface is manufactured with runner A3 and runner B4, between runner A3 and runner B4, is connected by splitter box 5; Runner A3 is connected with nylon charging aperture, and runner B4 is connected (referring to accompanying drawing 1～2) with nylon discharging opening 7.
The course of work of this nylon and pe sheath double-layer coextrusion mould is as follows:
The first step, nylon is squeezed into by an extruder in the runner A3 of die sleeve 1 outer surface, then be squeezed into equably in runner B4 by the splitter box 5 between runner A3 and runner B4, be more evenly pressed in the polyethylene runner 6 between die sleeve 1 and core rod 2 by nylon discharging opening 7;
Second step, polyethylene is squeezed in the polyethylene runner 6 between die sleeve 1 and core rod 2 by another extruder, now polyethylene converges with the nylon material of extruding by nylon discharging opening 7 before, then be synchronously extruded outside mould, after stretched, cooling, be coated on cable core, and form nylon and the two restrictive coatings of polyethylene.
This nylon and pe sheath double-layer coextrusion mould have removed the intermediate die of traditional moulds, only need to use core rod and die sleeve, owing to having reduced accessory, therefore assembling is simple, save material.The runner A making by die sleeve outer surface and runner B, nylon and polyethylene can disposable extrusion moldings, guaranteed pe sheath appearance quality.And can be supporting with common polythene extruder head, expand the range of work, highly versatile, effectively reduces production cost, has greatly improved working (machining) efficiency.
The above is the specific embodiment of this utility model, above-mentioned not illustrating is construed as limiting flesh and blood of the present utility model, person of an ordinary skill in the technical field is reading after this description and can the above-mentioned specific embodiment made an amendment or is out of shape, and does not deviate from essence of the present utility model and scope.
Claims (1)
1. a nylon and pe sheath double-layer coextrusion mould, it is made up of die sleeve (1) and core rod (2), it is characterized in that: in die sleeve (1), be manufactured with conical bore (8), outer surface one end of core rod (2) is made into conical structure (9), and the conical structure (9) of core rod (2) is sleeved in the conical bore (8) of die sleeve (1); Die sleeve (1) outer surface is manufactured with runner A(3) and runner B(4), runner A(3) and runner B(4) between be connected by splitter box (5); Between die sleeve (1) and core rod (2), be formed with polyethylene runner (6), runner A(3) be connected runner B(4 with nylon charging aperture) be connected with nylon discharging opening (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320810814.2U CN203592661U (en) | 2013-12-11 | 2013-12-11 | Double-layer co-extrusion die for nylon and polyethylene sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320810814.2U CN203592661U (en) | 2013-12-11 | 2013-12-11 | Double-layer co-extrusion die for nylon and polyethylene sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203592661U true CN203592661U (en) | 2014-05-14 |
Family
ID=50673576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320810814.2U Expired - Fee Related CN203592661U (en) | 2013-12-11 | 2013-12-11 | Double-layer co-extrusion die for nylon and polyethylene sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203592661U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612378A (en) * | 2013-12-11 | 2014-03-05 | 湖北凯乐科技股份有限公司 | Nylon and polyethylene jacket double-layer co-extrusion mold |
| CN106531363A (en) * | 2016-12-23 | 2017-03-22 | 安徽纵横高科电缆股份有限公司 | Double-layer co-extrusion type extruder used for cable processing |
-
2013
- 2013-12-11 CN CN201320810814.2U patent/CN203592661U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612378A (en) * | 2013-12-11 | 2014-03-05 | 湖北凯乐科技股份有限公司 | Nylon and polyethylene jacket double-layer co-extrusion mold |
| CN106531363A (en) * | 2016-12-23 | 2017-03-22 | 安徽纵横高科电缆股份有限公司 | Double-layer co-extrusion type extruder used for cable processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20211211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |