CN103660229A - 一种提高聚乙烯管材光洁度的挤出芯模 - Google Patents

一种提高聚乙烯管材光洁度的挤出芯模 Download PDF

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Publication number
CN103660229A
CN103660229A CN201210329223.3A CN201210329223A CN103660229A CN 103660229 A CN103660229 A CN 103660229A CN 201210329223 A CN201210329223 A CN 201210329223A CN 103660229 A CN103660229 A CN 103660229A
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China
Prior art keywords
core mold
extruding
core
plastic
core body
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Pending
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CN201210329223.3A
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English (en)
Inventor
吴思啸
苏睿
吴琪
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HUBEI FORLONG PIPE INDUSTRY CO LTD
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HUBEI FORLONG PIPE INDUSTRY CO LTD
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Application filed by HUBEI FORLONG PIPE INDUSTRY CO LTD filed Critical HUBEI FORLONG PIPE INDUSTRY CO LTD
Priority to CN201210329223.3A priority Critical patent/CN103660229A/zh
Publication of CN103660229A publication Critical patent/CN103660229A/zh
Pending legal-status Critical Current

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    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • 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
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

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

Abstract

本发明涉及塑料管材加工模具，是一种提高聚乙烯管材光洁度的挤出芯模，它具有芯模本体，其特征是：在芯模本体的尾端加装有一个聚四氟乙烯塑料环，塑料环的外径与芯模本体尾端的外径一致；本发明有效解决了现有金属模生产塑料管材，内表面光洁度低、制品收缩率尺寸变化较大的问题，主要用于聚乙烯塑料管材生产加工。

Description

一种提高聚乙烯管材光洁度的挤出芯模
技术领域
本发明涉及塑料管材加工模具，尤其是一种提高聚乙烯管材光洁度的挤出芯模。 
背景技术
在现有技术中用于挤出聚乙烯管材的挤出模头全部使用金属材料制作，通常使用40cr材料，表面镀薄硬铬抛光处理，使用中发现如下缺点： 
1、管材内壁表面光洁度粗糙，即使将模具抛光处理达到很高的光洁度，但挤出的制品光洁度还是没有显著的提高。
2、制品收缩率尺寸变化较大，达到2.5% 左右。 
发明内容
本发明的目的就是要解决现有模具生产的管材内表面光洁度低，制品收缩率尺寸变化较大的问题，提供一种提高聚乙烯管材光洁度的挤出芯模。 
本发明的具体方案是：针对现有的塑料管材芯模进行改进，它具有芯模本体，其特征是：在芯模本体的尾端加装有一个聚四氟乙烯塑料环，塑料环的外径与芯模本体尾端的外径一致。 
本发明中所述塑料环的对接端制有台阶，其小直径段嵌装在芯模本体的管口内定位连接。。 
本发明中所述塑料环的高度h≥20mm。 
本发明中在塑料环的外端面装有压紧圈。 
本发明由于在芯模出口端加装聚四氟乙烯塑料环，用于生产聚乙烯管材，内壁表面光洁度有显著的提高，同时，产品的收缩率减小到1%左右，本发明不仅可用于生产PE管材，也可以用于生产PVC-U、PVC-M、PP-R等塑料管材。 
附图说明
图1是本发明的主剖视图。 
图中：1-芯模本体，2-台阶，3-塑料环，4-螺钉，5-压紧圈。 
具体实施方式
参见图1，本发明具有芯模本体1，特别是：在芯模本体1的尾端加装有一个聚四氟乙烯塑料环3，塑料环3的外径与芯模本体1尾端的外径一致。 
本实施实例中所述塑料环3的对接端制有台阶2，其小直径段嵌装在芯模本体的管口内定位连接。 
本实施实例中塑料环3的高度h≥20mm，具体为35mm。 
本实施实例中在塑料环3的外端面装有压紧圈5，并通过螺钉4锁紧。 

Claims (4)

1.一种提高聚乙烯管材光洁度的挤出芯模，具有芯模本体，其特征是：在芯模本体的尾端加装有一个聚四氟乙烯塑料环，塑料环的外径与芯模本体尾端的外径一致。
2.根据权利要求1所述的一种提高聚乙烯管材光洁度的挤出芯模，其特征是：所述塑料环的对接端制有台阶，其小直径段嵌装在芯模本体的管口内定位连接。
3.根据权利要求1 所述的一种提高聚乙烯管材光洁度的挤出芯模，其特征是：塑料环的高度h≥20mm。
4.根据权利要求1所述的一种提高聚乙烯管材光洁度的挤出芯模，其特征是：在塑料环的外端面装有压紧圈。
CN201210329223.3A 2012-09-07 2012-09-07 一种提高聚乙烯管材光洁度的挤出芯模 Pending CN103660229A (zh)

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CN201210329223.3A CN103660229A (zh) 2012-09-07 2012-09-07 一种提高聚乙烯管材光洁度的挤出芯模

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210329223.3A CN103660229A (zh) 2012-09-07 2012-09-07 一种提高聚乙烯管材光洁度的挤出芯模

Publications (1)

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CN103660229A true CN103660229A (zh) 2014-03-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110640990A (zh) * 2019-09-29 2020-01-03 长园电子（东莞）有限公司 一种高耐磨表面自润滑挤出模具

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110640990A (zh) * 2019-09-29 2020-01-03 长园电子（东莞）有限公司 一种高耐磨表面自润滑挤出模具

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Application publication date: 20140326