CN103612378A - Nylon and polyethylene jacket double-layer co-extrusion mold - Google Patents

Nylon and polyethylene jacket double-layer co-extrusion mold Download PDF

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Publication number
CN103612378A
CN103612378A CN 201310669040 CN201310669040A CN103612378A CN 103612378 A CN103612378 A CN 103612378A CN 201310669040 CN201310669040 CN 201310669040 CN 201310669040 A CN201310669040 A CN 201310669040A CN 103612378 A CN103612378 A CN 103612378A
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CN
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Prior art keywords
mold
nylon
layer
extrusion
polyethylene
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CN 201310669040
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Chinese (zh)
Inventor
韩宇峰
张拥军
成赵念
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湖北凯乐科技股份有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C47/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C47/08Component parts, details or accessories; Auxiliary operations
    • B29C47/12Extrusion nozzles or dies
    • B29C47/20Extrusion nozzles or dies with annular opening, e.g. for tubular articles

Abstract

The invention relates to a nylon and polyethylene jacket double-layer co-extrusion mold, belonging to the technical field of optical cable processing molds. The double-layer co-extrusion mold consists of a mold sleeve and a mold core, wherein a circular cone hole in the mold sleeve is sheathed with a circular cone structure of the mold core, a flow channel A and a flow channel B which are connected by a flow dividing groove are arranged on the outer surface of the mold sleeve, a polyethylene flow channel is formed between the mold sleeve and the mold core, the flow channel A is connected with a nylon feeding hole, and the flow channel B is connected with a nylon discharge hole. According to the nylon and polyethylene jacket double-layer co-extrusion mold provided by the invention, a middle mold of the traditional double-layer co-extrusion mold is omitted, the structure is simple, accessories are eliminated, the processing speed is high during one-time extrusion molding of a double-layer jacket, the operation is convenient, and the nylon and polyethylene jacket double-layer co-extrusion mold can be matched with a common polyethylene extrusion head, and is high in universality and the production cost is effectively reduced; the nylon and polyethylene jacket double-layer co-extrusion mold solves the problems that the molding speed is low in a method of twice extrusion of the existing nylon and polyethylene co-extrusion mold, the production efficiency is low, the composition of the existing double-layer co-extrusion mold is complex, a dedicated head is required to be equipped for production in a one-to-one manner, the universality is poor, and the producing cost is high.

Description

一种尼龙与聚乙烯护套双层共挤模具 One nylon and polyethylene jacket layer co-extrusion die

技术领域 FIELD

[0001] 本发明涉及一种尼龙与聚乙烯护套双层共挤模具,属于光缆加工模具技术领域。 [0001] The present invention relates to a double layer of nylon and polyethylene sheath coextrusion die, the die processing technical field belonging to the cable. 背景技术 Background technique

[0002] 光缆的聚乙烯护套外层通常都会再包裹一层尼龙护套,以有效防止老鼠、蚂蚁对光缆的破坏。 [0002] The sheathed cable and then wrap the outer usually a nylon jacket, in order to effectively prevent rats, ants damage to the cable. 目前将尼龙护套挤包在光缆聚乙烯护套外层一般有两种方式:一种是先挤塑出一层聚乙烯护套,待聚乙烯护套成型后,再在聚乙烯护套外层挤包一层尼龙护套;另一种是采用模芯、中间模、模套组成的双层共挤模具同时将聚乙烯和尼龙挤出后一体成型。 Present in the nylon cable jacket extruded polyethylene outer jacket there are two ways: one is a first extruded layer of polyethylene sheath, to be molded polyethylene sheath, then the outer polyethylene sheath a nylon jacket extruded layer; the other is the use of mold core, the intermediate mold, the mold sleeve composition layer co-extrusion die after molding while integrally extruded polyethylene and nylon. 采用第一种方式,聚乙烯护套与尼龙护套必须分两次挤出成型,对聚乙烯护套成型后的表面质量要求较高,成型速度慢,生产效率较低。 The first approach, the sheathed nylon jacket must be twice extrusion molding, a high surface quality after forming a polyethylene sheath claim molding slow, production efficiency is low. 采用双层共挤模具尽管能一次成型,但模具构成复杂,且需配备专用机头,通用性较差,一般一种模具只能加工一种规格的光缆,加工成本闻。 Although double-layer coextrusion die capable of molding, but a complex mold, and to be equipped with special head, less versatile, generally to a mold cable processing only a specification of the processing cost smell.

发明内容 SUMMARY

[0003] 本发明的目的在于,提供一种模套外表面制作有两个流道,两个流道之间通过分流槽进行连接,结构简单,加工方便,无需配置专用机头,聚乙烯护套与尼龙护套一体化成型速度快,加工效率高的尼龙与聚乙烯护套双层共挤模具。 [0003] The object of the present invention is to provide a molding surface of outer sleeve fabricated with two flow paths, the connection between two flow paths through the tundish, simple in structure, easy to process, without special nose configuration, polyethylene guard nylon jacket with integrated sleeve forming speed faster, high processing efficiency of nylon and polyethylene jacket layer co-extrusion die.

[0004] 本发明是通过如下的技术方案来实现上述目的的 [0004] The present invention has achieved the above object by the following technical solution

该尼龙与聚乙烯护套双层共挤模具由模套和模芯构成,其特征在于:模套内制作有圆锥孔,模芯的外表面一端制作成圆锥结构,模芯的圆锥结构套装在模套的圆锥孔内;模套外表面制作有流道A和流道B,流道A与流道B之间通过分流槽连接;模套与模芯之间形成有聚乙烯流道,流道A与尼龙进料口连接,流道B与尼龙出料口连接。 The nylon sheath and a polyethylene layer co-extrusion molding mold composed of a sleeve and a mold core, characterized in that: the die case made with tapered bore, the outer surface of one end of the mandrel produced a cone structure, the conical mandrel in package structure conical bore of the die case; outer jacket surface of the mold produced with a flow path a and the flow path B, between the flow channel a and B are connected by the shunt flow passage groove; flow channel is formed between the mold with a polyethylene sheath and core flow A nylon channel inlet connection, flow passage B and the discharge opening is connected nylon.

[0005] 本发明与现有技术相比的有益效果在于 [0005] the present invention compared to the prior art that the beneficial effects

该尼龙与聚乙烯护套双层共挤模具省掉了传统双层共挤模具的中间模,仅需使用模芯与模套,结构简单,节省了配件。 The nylon sheath and a polyethylene layer co-extrusion molding die eliminating the need for a conventional intermediate layer co-extrusion die, and mold in the use of only sleeve structure is simple, saving parts. 同时,通过模套外表面制作的A、B两个流道,实现尼龙与聚乙烯两层护套一次性挤出成型,加工速度快,操作方便。 At the same time, by making the outer surface of die sets A, B two flow channel layers of polyethylene to achieve nylon disposable sheath extrusion, processing speed, ease of operation. 该尼龙与聚乙烯护套双层共挤模可装配普通聚乙烯挤出机头,适用范围广,通用性强,有效降低了生产成本。 The nylon layer co-extrusion molding with the polyethylene sheath may be assembled extrusion head ordinary polyethylene, wide application range, versatility, reduce the production cost. 解决了现有尼龙与聚乙烯共挤模具中分两次挤出的方式成型速度慢、生产效率低,以及现有的双层共挤模具构成复杂、需要配备专用机头一对一生产,通用性差,生产成本高的问题。 Solves the coextrusion of nylon and polyethylene, in two portions of extrusion die molding slow, low productivity, and conventional bilayer coextrusion die a complex, it requires special head with one production, GM poor, high production cost.

附图说明 BRIEF DESCRIPTION

[0006] 图1为一种尼龙与聚乙烯护套双层共挤模具的结构示意图; [0006] FIG. 1 is a schematic structure of a double layer of nylon and polyethylene sheath coextrusion die;

图2为图1的A—A剂视结构不意图。 Figure 2 is A-A view of the structure of FIG 1 agent is not intended.

[0007] 图中:1、模套,2、模芯,3、流道A,4、流道B,5、分流槽,6、聚乙烯流道,7、尼龙出料口,8、圆锥孔,9、圆锥结构。 [0007] FIG: 1, a die set 2, the core 3, the flow passage A, 4, the flow path B, 5, tundish, 6, polyethylene flow channel 7, nylon discharge port, 8, conical hole 9, a conical structure. 具体实施方式 Detailed ways

[0008] 下面结合附图对本发明的实施方式进行详细描述: [0008] DRAWINGS Embodiments of the present invention will be described in detail:

该尼龙与聚乙烯护套双层共挤模具由模套I和模芯2构成,模套I内制作有圆锥孔8,模芯2的外表面一端制作成圆锥结构9,模芯2的圆锥结构9套装在模套I的圆锥孔8内,模套I与模芯2之间形成有一聚乙烯流道6,模套I外表面制作有流道A3和流道B4,流道A3与流道B4之间通过分流槽5连接;流道A3与尼龙进料口连接,流道B4与尼龙出料口7连接(参见附图1〜2)。 The nylon sheath and a polyethylene layer co-extrusion molding die is constituted by two sets of I and a mold core, the mold sets I made with tapered bore 8, the outer end surface of the core 2 is made into a conical structure 9, the conical mandrel 2 9 set in the mold structure units I conical bore 8, the die case is formed with a polyethylene runner 6, the outer surface of the die sets I produced with a flow path flow path A3 and B4, A3 and the flow passage between the flow and the mandrel 2 I B4 connected by passage between the tundish 5; A3 nylon runner inlet connection, flow passage B4 and nylon discharge opening 7 is connected (see FIG. 1 to 2).

[0009] 该尼龙与聚乙烯护套双层共挤模具的工作过程如下: [0009] The nylon layer co-extrusion with the polyethylene sheath mold works as follows:

第一步,将尼龙通过一台挤出机挤入到模套I外表面的流道A3内,然后通过流道A3与流道B4之间的分流槽5均匀地挤入到流道B4内,再通过尼龙出料口7均匀挤压进入到模套I与模芯2之间的聚乙烯流道6内; The first step, nylon extruded through an extruder die into the outer surface of the sleeve flow passage A3 I, and then 5 uniformly squeezed into the flow path B4 through the tundish between the flow passage and the flow passage A3 B4 , then the discharge port 7 through a nylon uniformly pressed into the flow passage 6 between the polyethylene mold and core sets I;

第二步,将聚乙烯通过另一台挤出机挤入到模套I与模芯2之间的聚乙烯流道6内,此时聚乙烯与之前通过尼龙出料口7挤出的尼龙料进行汇合,然后同步被挤出模具外,经过拉伸、冷却后包覆在缆芯上,及形成尼龙与聚乙烯双护套层。 A second step, a polyethylene extruded through another extruder die housing to the flow passage between the polyethylene and the core 2 I 6, this time with the polyethylene prior to extrusion through the discharge port 7 Nylon Nylon material for confluence, then synchronization is extruded outside of the mold, stretched, cooled and coated on the core, and the sheath is formed of nylon and polyethylene double layer.

[0010] 该尼龙与聚乙烯护套双层共挤模具去掉了传统模具的中间模,仅需使用模芯与模套,由于减少了配件,故装配简单,节省材料。 [0010] The nylon layer co-extrusion with the polyethylene jacket to remove the mold middle part of the traditional mold, and the mold core only using sets of parts due to reduced, so simple to assemble, saving material. 通过模套外表面制作的流道A和流道B,尼龙与聚乙烯可一次性挤出成型,保证了聚乙烯护套外表质量。 Produced by the molding surface of the outer sheath flow channel A and the flow path B, nylon and polyethylene may be a one-time extrusion, to ensure the quality of the outer sheath of polyethylene. 并且能与普通聚乙烯挤出机头配套,扩大了加工范围,通用性强,有效降低了生产成本,大大提高了加工效率。 And it can be extruded with the head supporting ordinary polyethylene, expanded working range, versatility, reduce the production cost and greatly improve the processing efficiency.

[0011] 以上所述只是该发明的具体实施方式,上述举例说明不对本发明的实质内容构成限制,所属技术领域的普通技术人员在阅读了本说明书后可以对上述的具体实施方式做修改或变形,而不背离本发明的实质和范围。 [0011] The above embodiment but the specific embodiment of the invention, exemplified above is not the substance of the present invention to limit, those of ordinary skill in the art upon reading the modifications and variations can be made to the above-described specific embodiments of the present specification without departing from the spirit and scope of the invention.

Claims (1)

  1. 1.一种尼龙与聚乙烯护套双层共挤模具,它由模套(I)和模芯(2)构成,其特征在于:模套(I)内制作有圆锥孔(8),模芯(2)的外表面一端制作成圆锥结构(9),模芯(2)的圆锥结构(9)套装在模套(I)的圆锥孔(8)内;模套(I)外表面制作有流道A (3)和流道B (4),流道A (3)与流道B (4)之间通过分流槽(5)连接;模套(I)与模芯(2)之间形成有聚乙烯流道(6),流道A (3)与尼龙进料口连接,流道B (4)与尼龙出料口(7)连接。 A double layer of nylon and polyethylene sheath coextrusion die, which die case consists of (I) and mandrel (2), characterized in that: the die case (I) the production with a conical bore (8), die the outer surface of the end of the core (2) is made into a conical configuration (9), the core (2) of the conical structure (9) set in a mold jacket (I) of the conical bore (8); die case (I) the outer surface of the production with a flow passage A (3) and a flow passage B (4), between the flow passage A (3) and the flow passage B (4) is connected by the shunt slot (5); die case (I) and the mandrel (2) of polyethylene formed between the flow channel (6), the flow passage A (3) and the nylon feed connection, a flow passage B (4) and nylon-discharge opening (7) is connected.
CN 201310669040 2013-12-11 2013-12-11 Nylon and polyethylene jacket double-layer co-extrusion mold CN103612378A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104527018A (en) * 2015-01-21 2015-04-22 湖北凯乐科技股份有限公司 Color strip material and polyethylene sheath coextrusion die

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6485731A (en) * 1987-05-20 1989-03-30 Bekum Maschf Gmbh Co-extrusion head
US5733491A (en) * 1995-04-14 1998-03-31 Grossfillex S.A.R.L. Extrusion device and process for two-layer section members
CN1791502A (en) * 2003-05-16 2006-06-21 拜尔薄膜欧洲有限责任公司 Multi-wall sheet without the triangle effect, coated by coextrusion
CN102802912A (en) * 2009-06-11 2012-11-28 曼夫瑞德·A·A·鲁波克 Die tooling for extruding tubular product
CN203592661U (en) * 2013-12-11 2014-05-14 湖北凯乐科技股份有限公司 Double-layer co-extrusion die for nylon and polyethylene sheath

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6485731A (en) * 1987-05-20 1989-03-30 Bekum Maschf Gmbh Co-extrusion head
US5733491A (en) * 1995-04-14 1998-03-31 Grossfillex S.A.R.L. Extrusion device and process for two-layer section members
CN1791502A (en) * 2003-05-16 2006-06-21 拜尔薄膜欧洲有限责任公司 Multi-wall sheet without the triangle effect, coated by coextrusion
CN102802912A (en) * 2009-06-11 2012-11-28 曼夫瑞德·A·A·鲁波克 Die tooling for extruding tubular product
CN203592661U (en) * 2013-12-11 2014-05-14 湖北凯乐科技股份有限公司 Double-layer co-extrusion die for nylon and polyethylene sheath

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104527018A (en) * 2015-01-21 2015-04-22 湖北凯乐科技股份有限公司 Color strip material and polyethylene sheath coextrusion die

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