CN105563792A - 聚乙烯生产线机头模具 - Google Patents

聚乙烯生产线机头模具 Download PDF

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Publication number
CN105563792A
CN105563792A CN201610078489.3A CN201610078489A CN105563792A CN 105563792 A CN105563792 A CN 105563792A CN 201610078489 A CN201610078489 A CN 201610078489A CN 105563792 A CN105563792 A CN 105563792A
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CN
China
Prior art keywords
polytetrafluoroethylene
ptfe
mold
machine head
production line
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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.)
Pending
Application number
CN201610078489.3A
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English (en)
Inventor
李正国
彭方国
黄文霞
李小华
闫先华
王成辉
杨剑勇
肖鑫
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Hubei Tongling Plastic Technology Co Ltd
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Hubei Tongling Plastic Technology 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 Hubei Tongling Plastic Technology Co Ltd filed Critical Hubei Tongling Plastic Technology Co Ltd
Priority to CN201610078489.3A priority Critical patent/CN105563792A/zh
Publication of CN105563792A publication Critical patent/CN105563792A/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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
    • 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

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

Abstract

本发明的名称为聚乙烯生产线机头模具。属于聚乙烯成型模具技术领域。它主要是解决现有机头模具使生产的管材存在表面粗糙、内外壁没有光泽、且不光滑的问题。它的主要特征是：包括模具钢材质的口模和芯模；在所述口模的外端面固定有聚四氟乙烯外环；在所述芯模的外端面固定有聚四氟乙烯内环；该聚四氟乙烯外环与聚四氟乙烯内环厚度相同，处于同一平面内。本发明具有可使所生产的管材表面光滑、内外壁有光泽、以及节约成本的特点，主要用于聚乙烯管材生产线上机筒外的机头模具。

Description

聚乙烯生产线机头模具
技术领域
本发明属于聚乙烯成型模具技术领域，具体涉及一种聚乙烯管材生产线上机筒外的机头模具。
背景技术
目前，用于生产高密度聚乙烯（PE）管材的聚乙烯管材生产线上机筒外的机头模具一般采用的是模具钢，而模具钢的特点是表面粗糙度大、摩擦系数高，使生产的管材表面粗糙、内外壁没有光泽，且不光滑。在聚乙烯原料中加入光亮剂之类的辅料，虽能使生产的管材表面光滑、内外壁有光泽，但却增加了成本，又可能影响管材的性能。
发明内容
本发明的目的就是针对上述不足之处而提供一种可使所生产的管材表面光滑、内外壁有光泽的聚乙烯生产线机头模具。
本发明的技术解决方案是：一种聚乙烯生产线机头模具，包括模具钢材质的口模和芯模，其特征在于：在所述口模的外端面固定有聚四氟乙烯外环；在所述芯模的外端面固定有聚四氟乙烯内环；该聚四氟乙烯外环与聚四氟乙烯内环厚度相同，处于同一平面内。
本发明的技术解决方案中所述的聚四氟乙烯外环、聚四氟乙烯内环分别通过螺丝与口模、芯模定位连接。
本发明由于在现有由模具钢材质的口模和芯模构成的机头模具基础上，分别在口模、芯模的外端面固定有聚四氟乙烯外环、聚四氟乙烯内环，且聚四氟乙烯外环与聚四氟乙烯内环厚度相同，处于同一平面内，因而在生产高密度聚乙烯（PE）管材时，能够充分利用聚四氟乙烯耐高温、高润滑、摩擦系数小和不粘附任何物质的特点，使聚乙烯挤出物通过口模和芯模成型后再与聚四氟乙烯内、外环表面摩擦，从而增加管材表面的光洁度，使管材表面光滑、内外壁有光泽。本发明具有可使所生产的管材表面光滑、内外壁有光泽、以及节约成本的特点。本发明主要用于聚乙烯管材生产线上机筒外的机头模具。
附图说明
图1是本发明的结构示意图。
图2是本发明聚四氟乙烯外环和聚四氟乙烯内环的结构示意图。
图中：1-口模，2-芯模，3-聚四氟乙烯外环，4-聚四氟乙烯内环。
具体实施方式
如图1、图2所示。本发明聚乙烯生产线机头模具包括口模1、芯模2、聚四氟乙烯外环3和聚四氟乙烯内环4。其中，口模1和芯模2为模具钢材质，构成现有的机头模具。聚四氟乙烯外环3通过螺丝与口模1的外端面定位连接，聚四氟乙烯内环4通过螺丝与芯模2的外端面定位连接。聚四氟乙烯外环3与聚四氟乙烯内环4厚度相同，处于同一平面内，且同圆心。聚四氟乙烯外环3与聚四氟乙烯内环4的厚度可根据管材直径的大小确定。聚四氟乙烯外环3内壁、外壁要求光洁。
本发明充分利用了聚四氟乙烯耐高温、高润滑、摩擦系数小和不粘附任何物质的特点，通过与管材表面的摩擦，起到增加管材内外表面光亮效果，而不影响产品的任何性能。

Claims (2)

1.一种聚乙烯生产线机头模具，包括模具钢材质的口模（1）和芯模（2），其特征在于：在所述口模（1）的外端面固定有聚四氟乙烯外环（3）；在所述芯模（2）的外端面固定有聚四氟乙烯内环（4）；该聚四氟乙烯外环（3）与聚四氟乙烯内环（4）厚度相同，处于同一平面内。
2.根据权利要求1所述的聚乙烯生产线机头模具，其特征在于：所述的聚四氟乙烯外环（3）、聚四氟乙烯内环（4）分别通过螺丝与口模（1）、芯模（2）定位连接。
CN201610078489.3A 2016-02-04 2016-02-04 聚乙烯生产线机头模具 Pending CN105563792A (zh)

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Cited By (2)

* 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
CN112721083A (zh) * 2020-12-10 2021-04-30 安徽长荣光纤光缆科技有限公司 一种特种光缆挤出模具及其使用方法

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CN204894467U (zh) * 2015-07-21 2015-12-23 山东阳谷恒泰实业有限公司 一种用于pe管道挤出模具
CN205553141U (zh) * 2016-02-04 2016-09-07 湖北统领塑胶科技有限公司 聚乙烯生产线机头模具

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JP2006321138A (ja) * 2005-05-19 2006-11-30 Canon Chemicals Inc ゴムローラ押出し成形方法及び押出し製造装置
CN203228394U (zh) * 2013-04-23 2013-10-09 荆州市恒鑫塑料管材有限公司 一种塑料管材挤出模具
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Cited By (2)

* 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
CN112721083A (zh) * 2020-12-10 2021-04-30 安徽长荣光纤光缆科技有限公司 一种特种光缆挤出模具及其使用方法

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