CN202640744U - 一种pvc小口径管定径模 - Google Patents

一种pvc小口径管定径模 Download PDF

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Publication number
CN202640744U
CN202640744U CN2012202173158U CN201220217315U CN202640744U CN 202640744 U CN202640744 U CN 202640744U CN 2012202173158 U CN2012202173158 U CN 2012202173158U CN 201220217315 U CN201220217315 U CN 201220217315U CN 202640744 U CN202640744 U CN 202640744U
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China
Prior art keywords
water ring
coolant jacket
sizing
pvc
sizing die
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Expired - Fee Related
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CN2012202173158U
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Inventor
姚红彬
王志斌
孙建凯
刘建民
王伟
刘炜乐
潘庆民
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HEBEI BOSOAR PIPE CO Ltd
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HEBEI BOSOAR PIPE CO Ltd
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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
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
    • B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9115—Cooling of hollow articles
    • B29C48/912—Cooling of hollow articles of tubular films
    • B29C48/913—Cooling of hollow articles of tubular films externally
    • 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
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means

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

Abstract

一种PVC小口径管定径模，用于解决定径套冷却速度慢、管材成型困难、很难形成精确定型尺寸的问题。它由连接法兰和冷却套组成，冷却套固定在连接法兰的中心孔内，所述连接法兰上设有水环，水环分别与设置在连接法兰两侧的进水口、出水口连通，所述冷却套上设有环槽，环槽与水环位置对应，环槽上设有与水环连通的喷水孔。本实用新型通过设置水环、狭缝、螺纹槽等结构改进，使其具有冷却效果好、可快速定型、定型尺寸精确、适应小口径管材高速生产的特点，此外本实用新型结构简单、易于实现、低成本投入、经济实用。

Description

一种PVC小口径管定径模
技术领域
本实用新型涉及一种用于生产PVC塑料管材的定型模具,特别是PVC小口径管定径模。
背景技术
PVC管是一种开发应用时间较长的塑料管材，它具有抗腐蚀能力强、易于粘接、价格低、质地坚硬等特点。近年来，PVC管道发展迅速，尺寸精度要求越来越严，生产率要求越来越高。目前，在PVC管生产企业所使用的定径模具，其结构设计上存有一些缺陷，不能满足快速生产的要求，生产出的管材达不到尺寸要求精度。如小口径PVC管（管材直径小于75mm），生产速度很快，在管材进入定径套前的瞬间温度很高，按照目前通用的干式定型法导致管材成型非常困难，很难形成精确的定型尺寸。
实用新型内容
本实用新型用于解决上述已有技术之缺陷，提供一种冷却效果好、能够实现快速定型的PVC小口径管定径模。
本实用新型所称问题是通过以下技术方案解决的：
一种PVC小口径管定径模，其特别之处是：它由连接法兰和冷却套组成，冷却套固定在连接法兰的中心孔内，所述连接法兰上设有水环，水环分别与设置在连接法兰两侧的进水口、出水口连通，所述冷却套上设有环槽，环槽与水环位置对应，环槽上设有与水环连通的喷水孔。
上述PVC小口径管定径模，所述冷却套上设有狭缝，狭缝宽度为2毫米，各狭缝间距自冷却套首端至末端由密渐疏。
上述PVC小口径管定径模，所述冷却套的内壁上设有螺纹槽。
本实用新型针对现有小口径PVC管定径套冷却速度慢、管材成型困难、很难形成精确定型尺寸的问题进行了改进，设计了一种利用水冷快速冷却管材使其形成精确定型尺寸的PVC小口径管定径模。所述定径套包括连接法兰和冷却套，在连接法兰上设计出能快速冷却管材的水环结构，使管材进入冷却套时迅速冷却，并在管材表面形成水膜，减小管材与冷却套的摩擦力，从而使管材顺利进入冷却定型阶段；为适应快速生产的需要，在冷却套上设置了狭缝，冷却套内壁设置了可产生水膜的螺纹，以减小管材挤出时的阻力。上述改进使本实用新型相比现有技术具有冷却效果好、可快速定型、定型尺寸精确、适应小口径管材高速生产的特点，此外本实用新型结构简单、易于实现、低成本投入、经济实用。
附图说明
图1是本实用新型结构示意图；
图2是图1 A处局部放大视图。
附图中标号如下：1.连接法兰，2.进水口，3.出水口，4. PVC管材，5.环槽，6.喷水孔，7.水环，8.冷却水箱，9.冷却水，10.冷却套，11.狭缝，12.螺纹槽。 
具体实施方式
参看图1，本实用新型所述定径套由连接法兰1和冷却套10组成，冷却套一端与连接法兰紧密配合并焊接成一体。在连接法兰上设有水环7，水环分别与设置在连接法兰两侧的进水口2、出水口3连通；所述冷却套10上设有环槽5，环槽与水环位置对应，环槽上设有与水环连通的喷水孔6。当挤出的PVC管材4在高热状态进入定径套时，首先水环中的冷却水会从喷水孔中喷出，并附着在PVC管材外壁上，将管材温度降低，并将其热量随管材带走。冷却套上设置的环槽5用以形成封闭的环形水膜，可以减小PVC管材和冷却套的摩擦，以适应PVC管材快速通过。
仍参看图1，所述冷却套10上设有几排狭缝11，狭缝宽度为2毫米，各狭缝间距自冷却套首端至末端由密渐疏。当PVC管材进入冷却套后，从出水口3及冷却水箱8喷出冷却水9，喷淋在PVC管材上，增强瞬间冷却效果，冷却套上的狭缝11按先密后疏排列，符合PVC管材通过冷却套时温度由高到低的规律，使PVC管材进入定径套的冷却效率相同，从而实现PVC管材冷却的一致性和稳定性，而达到管材外径最终尺寸的精确。
参看图1、图2，冷却套10的内壁上设有螺纹槽12，设置螺纹槽可以形成水膜，使管材通过冷却套的摩擦力大为减小，提高管材的生产效率。

Claims (3)

1.一种PVC小口径管定径模，其特征在于：它由连接法兰（1）和冷却套（10）组成，冷却套固定在连接法兰的中心孔内，所述连接法兰上设有水环（7），水环分别与设置在连接法兰两侧的进水口（2）、出水口（3）连通，所述冷却套（10）上设有环槽（5），环槽与水环位置对应，环槽上设有与水环连通的喷水孔（6）。
2.根据权利要求1所述的PVC小口径管定径模，其特征在于：所述冷却套（10）上设有狭缝（11），狭缝宽度为2毫米，各狭缝间距自冷却套首端至末端由密渐疏。
3.根据权利要求1或2所述的PVC小口径管定径模，其特征在于：所述冷却套（10）的内壁上设有螺纹槽（12）。
CN2012202173158U 2012-05-15 2012-05-15 一种pvc小口径管定径模 Expired - Fee Related CN202640744U (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103171120A (zh) * 2013-03-12 2013-06-26 德科摩橡塑科技(东莞)有限公司 管材挤出生产线
CN104669588A (zh) * 2013-11-27 2015-06-03 上海金湖挤出设备有限公司 一种精密高效的管材定径套
CN106626322A (zh) * 2015-10-29 2017-05-10 北新集团建材股份有限公司 一种塑料管材的水环式定径套

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103171120A (zh) * 2013-03-12 2013-06-26 德科摩橡塑科技(东莞)有限公司 管材挤出生产线
CN103171120B (zh) * 2013-03-12 2015-03-11 德科摩橡塑科技(东莞)有限公司 管材挤出生产线
CN104669588A (zh) * 2013-11-27 2015-06-03 上海金湖挤出设备有限公司 一种精密高效的管材定径套
CN106626322A (zh) * 2015-10-29 2017-05-10 北新集团建材股份有限公司 一种塑料管材的水环式定径套
CN106626322B (zh) * 2015-10-29 2019-06-28 北新集团建材股份有限公司 一种塑料管材的水环式定径套

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Termination date: 20190515