CN203557672U - 一种强制推料型挤橡机螺杆 - Google Patents

一种强制推料型挤橡机螺杆 Download PDF

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CN203557672U
CN203557672U CN201320701949.5U CN201320701949U CN203557672U CN 203557672 U CN203557672 U CN 203557672U CN 201320701949 U CN201320701949 U CN 201320701949U CN 203557672 U CN203557672 U CN 203557672U
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screw rod
extruding machine
type rubber
thread
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戴志龙
戴岳明
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JIANGSU MEIDIAN ELECTRICAL MACHINERY TECHNOLOGY Co Ltd
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JIANGSU MEIDIAN ELECTRICAL MACHINERY TECHNOLOGY 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/64—Screws with two or more threads
    • B29C48/65—Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/64—Screws with two or more threads

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

Abstract

本实用新型公开了一种强制推料型挤橡机螺杆，该螺杆分为四段：强制推料段、压缩段、熔融段、计量段。在强制推料段原有四条大导程螺纹的基础上又增加了两个和压缩段始端螺纹深度相同、导程相同并带有一定宽度的双头沟槽，两个双头沟槽把原有的四条大导程螺纹分割成许多不规则的螺棱，因而加大了“吃料”空间，再加上把强制推料段设计成等深螺纹没有压缩比，减小了胶料向压缩段推移的阻力，所以胶料更容易被“吃进”，同时胶料也更容易由旋转变为直线推进，使喂料口“吃料”充足稳定，且适用胶料范围增大，胶料塑化更充分，使螺杆的挤出质量和出胶量大幅提高，生产能力显著上升，本实用新型具有结构合理、挤出速度快、适用橡胶原料范围大等特点。

Description

一种强制推料型挤橡机螺杆
技术领域
本实用新型属于用于电线、电缆行业橡胶挤出领域，具体涉及一种强制推料型挤橡机螺杆。 
背景技术
挤橡机螺杆的作用是使胶料随螺杆旋转运动逐渐变为直线运动，向机头方向推移，并与机身相配合，压缩生热、软化搅拌、混合胶料。 
   目前常见的挤橡机分离型螺杆结构见（图1），这种螺杆共分三段：加料段7、熔融段8、计量段9。有附加螺纹的中段是熔融段，加料段是指螺杆进料处到附加螺纹的起始部分，计量段是指螺杆头部到附加螺纹的终止部分。这种螺杆存在的缺点是由于加料段螺纹是等距变深的，很容易造成胶料在喂料口加料段打滑而影响正常喂料，尤其是在螺杆转速提高时更容易产生“吃料”不充足现象，从而导致挤出的电线、电缆产品外观有缺陷，劳动生产率低下，废品率增加，产品成本大幅上升。 
实用新型内容
本实用新型的目的是提供一种结构合理、挤出速度快、适用橡胶原料范围大的强制推料型挤橡机螺杆，解决了当螺杆转速提高时出现胶料在喂料口“打滑”现象，避免了改进前胶料在喂料口“吃料”不充足的状况，使螺杆的挤出质量和出胶量大幅提高，生产能力显著上升。 
本实用新型所述一种导料型挤橡机螺套，该螺杆包括四段：强制推料段、压缩段、熔融段和计量段，所述的强制推料段上设有两个和压缩段始端螺纹深度相同、导程相同的双头沟槽，双头沟槽把强制推料段上的导程螺纹分割成许多不规则的螺棱；所述的强制推料段上的螺纹等距等深。 
所述的熔融段、计量段上的螺纹等距等深；所述的压缩段上的螺纹等距变深。 
所述的双头沟槽的螺纹导程为72-160mm，螺纹螺距为36-80mm，螺纹宽度为14-25mm。 
本实用新型的有益效果在于： 
与现有技术相比，本实用新型将螺杆分为四段：强制推料段、压缩段、熔融段、计量段。强制推料段在原有四条大导程螺纹的基础上又增加了两个和压缩段始端螺纹深度相同、导程相同并带有一定宽度的沟槽，两个沟槽把原有的四条大导程螺纹分割成许多不规则的螺棱，因而加大了“吃料”空间，再加上把强制推料段设计成等深螺纹没有压缩比，减小了胶料向压缩段推移的阻力，所以胶料更容易被“吃进”，同时胶料也更容易由旋转变为直线推进，使喂料口“吃料”充足稳定，且适用胶料范围增大，胶料塑化更充分，尤其当螺杆转速提高时不会发生胶料在喂料口的“打滑”现象，避免了改进前胶料在喂料口“吃料”不充足的状况，使螺杆的挤出质量和出胶量大幅提高，生产能力显著上升。
附图说明
图1是现有螺杆的结构示意图； 
图2为本实用新型结构示意图。
具体实施方式
如图1所示，本实用新型所述的一种强制推料型挤橡机螺杆，该螺杆分为四段：强制推料段1、压缩段2、熔融段3、计量段4。在强制推料段1原有四条大导程螺纹的基础上又增加了两个和压缩段2始端螺纹深度相同、导程相同并带有一定宽度的双头沟槽5，两个双头沟槽5把原有的四条大导程螺纹分割成许多不规则的螺棱6，因而加大了“吃料”空间，再加上把强制推料段1设计成等深螺纹没有压缩比，减小了胶料向压缩段推移的阻力，所以胶料更容易被“吃进”，同时胶料也更容易由旋转变为直线推进，使喂料口“吃料”充足稳定，且适用胶料范围增大，胶料塑化更充分，尤其当螺杆转速提高时不会发生胶料在喂料口的“打滑”现象，避免了改进前胶料在喂料口“吃料”不充足的状况，使螺杆的挤出质量和出胶量大幅提高，生产能力显著上升。 
上述强制推料段上的双头沟槽螺纹参数与螺杆直径进行匹配。螺杆直径为72-160mm，所述的双头沟槽的螺纹导程为72-160mm，螺纹螺距为36-80mm，螺纹宽度为14-25mm。强制推料型挤橡机螺杆推料段双头沟槽螺纹特性如下表： 
 
Figure DEST_PATH_IMAGE002
本实用新型提供了一种强制推料型挤橡机螺杆，以上所述仅是本实用新型的优选实施方法，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型原理的前提下，还可以作出若干改进，这些改进也应视为本实用新型的保护范围。

Claims (6)

1.一种强制推料型挤橡机螺杆，其特征在于：该螺杆包括四段：强制推料段（1）、压缩段（2）、熔融段（3）和计量段（4），所述的强制推料段（1）上设有两个和压缩段（2）始端螺纹深度相同、导程相同的双头沟槽（5），双头沟槽（5）把强制推料段（1）上的导程螺纹分割成许多不规则的螺棱（6）；所述的强制推料段（1）上的螺纹等距等深。
2.根据权利要求1所述的强制推料型挤橡机螺杆，其特征在于：所述的熔融段（3）、计量段（4）上的螺纹等距等深。
3.根据权利要求1所述的强制推料型挤橡机螺杆，其特征在于：所述的压缩段（2）上的螺纹等距变深。
4.根据权利要求1所述的强制推料型挤橡机螺杆，其特征在于：所述的双头沟槽（5）的螺纹导程为72-160mm。
5.根据权利要求1所述的强制推料型挤橡机螺杆，其特征在于：所述的双头沟槽（5）的螺纹螺距为36-80mm。
6.根据权利要求1所述的强制推料型挤橡机螺杆，其特征在于：所述的双头沟槽（5）的螺纹宽度为14-25mm。
CN201320701949.5U 2013-11-08 2013-11-08 一种强制推料型挤橡机螺杆 Expired - Fee Related CN203557672U (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103587100A (zh) * 2013-11-08 2014-02-19 江苏美电电工机械科技有限公司 一种强制推料型挤橡机螺杆
CN104260307A (zh) * 2014-07-28 2015-01-07 安庆钰龙橡塑机械制造有限公司 挤橡机
FR3022823A1 (fr) * 2014-06-30 2016-01-01 Michelin & Cie Extrudeuse comportant un fourreau filete

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103587100A (zh) * 2013-11-08 2014-02-19 江苏美电电工机械科技有限公司 一种强制推料型挤橡机螺杆
FR3022823A1 (fr) * 2014-06-30 2016-01-01 Michelin & Cie Extrudeuse comportant un fourreau filete
WO2016001258A1 (fr) * 2014-06-30 2016-01-07 Compagnie Generale Des Etablissements Michelin Extrudeuse comportant un fourreau filete
CN104260307A (zh) * 2014-07-28 2015-01-07 安庆钰龙橡塑机械制造有限公司 挤橡机

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