CN2199864Y - 一种热固性粉末涂料双螺杆挤出机用复合螺杆 - Google Patents

一种热固性粉末涂料双螺杆挤出机用复合螺杆 Download PDF

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CN2199864Y
CN2199864Y CN94225826U CN94225826U CN2199864Y CN 2199864 Y CN2199864 Y CN 2199864Y CN 94225826 U CN94225826 U CN 94225826U CN 94225826 U CN94225826 U CN 94225826U CN 2199864 Y CN2199864 Y CN 2199864Y
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screw
utility
model
producing
type coating
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林其勋
滕建民
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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
    • B29C48/63—Screws having sections without mixing elements or threads, i.e. having cylinder shaped sections
    • 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
    • B29C48/40—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 using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin 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
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • 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
    • B29C48/575—Screws provided with elements of a generally circular cross-section for shearing the melt, i.e. shear-ring elements

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

Abstract

一种热固性粉末涂料双螺杆挤出机用的复合螺 杆，适用于实验室中配方和配色的微型机和小规模生 产挤出机，其混炼机制和效果完全切合生产实际。该 螺杆分段和各截面形状同目前生产用的复合螺杆相 同，各段最大回转直径相等，齿形可与配偶螺杆啮合 揩擦，但全螺杆由一根整体材料构成。该螺杆加工工 艺简化，省材料，强度和刚性高，可满足使用要求，试 验出的配方和配色方案准确和节省大量试验或生产 用料。

Description

本实用新型涉及一种涂料加工机械。
热固性粉末涂料做为一种时尚产品，可喷涂在家用电器、仪器和家具的金属壳上，不仅能达到所需的光泽度、颜色鲜艳和美观耐用，而且具有极高的耐蚀性和绝缘性，受到普遍欢迎。双螺杆挤出机就是制造这种涂料的关键设备之一，其产量高、混炼效果好，配料在机内停留时间短（由于配料中有固化剂，停留时间长了，可能使配料在高温下固化，堵塞挤出通道和影响产品质量），自清能力强和换色方便等优点，是目前较先进的设备。该设备中最关键的零件是一对同向旋转且互相啮合揩擦的复合螺杆。该螺杆的截面形状由一端向另一端分段变化，顺次为带有传动结构（如平键、花键和离合器等）的传动轴颈段——可带动螺杆转动；带有较大螺距的狭带式螺纹的送料段——可将已预混合的配料向机内推进；由若干厚度相等，截面形状相同，但配置方向不同的捏合块（凸轮）摞合而成的混炼段——可对运行到该部位已被加热熔融的配料进行强烈剪切和揉搓，以使配料均匀混合，结成不可分离的粒子，以及带有较小螺距的狭带式螺纹构成的挤出段——可将混炼段推过来的体积已减小的熔融配料挤出机外，其中送料段、混炼段和挤出段的外圆上最大回转直径相同，各段齿形可分别与配偶螺杆相应段啮合揩擦。由于该螺杆结构复杂，精度要求高，制造困难，目前仅能采用积木方法制造，即将二段螺距不同的螺纹套及若干捏合块按要求方位用芯轴穿起来，用键加以定位并传动。这种螺杆（或设备）用于大批量生产中较理想，但不适用于配方和配色试验及小批量生产中，因为其容量大，每试验一次要浪费掉几十公斤乃至几百公斤配料，故用户急切要求设计仅用十余克至几十克配料即可做出配方和配色方案的实验室用微型双螺杆挤出机和用于小批生产的小型挤出机，要求其混炼条件和机制与大批生产用挤出机相同，以使试验出的配方和配色方案切合生产实际。要解决这个问题，关键是解决微型复合螺杆的结构问题，由于其尺寸小，若用上述积木结构则芯轴太细、刚性太差根本不能用。目前已有制造的小型等螺距丝杠式的螺杆又显然不符要求。
本实用新型的目的是提供一种热固性粉末涂料双螺杆挤出机用的复合螺杆，能适用于试验室或小规模生产中的微型双螺杆挤出机，使该机混炼机制的效果切合生产实际，从而可节省大量的试验或生产用料。
解决方案是设计的该复合螺杆分段和各截面形状与上述生产用大型螺杆相同，但不是用积木法装配而成，而是用一根材料制成，也即全螺杆为一整个实体。
由于不再采用积木结构，制造工艺可简化，节省了原材料和加工工时，其强度和刚性明显增强，完全可以达到使用要求，而且混炼机制和效果切合生产实际，试验出的配方准确适用性高，还可节省大量试验用料、降低生产成本，并适用于小规模生产中。
下面结合附图给出的实施例对本实用新型进行补充说明。
由图可见到该螺杆的截面形状由一端向另一端分段变化，顺次为带有渐开线花键的传动轴颈段1、带有较大螺距的狭带式螺纹的送料段2、由七块厚度相等截面形状相同但配置方向各异的捏合块摞合而成的混炼段3和带有较小螺距的狭带式螺纹的挤出段4，其中送料段、混炼段和挤出段的外圆最大回转直径相同，各段齿形可分别与配偶螺杆相应段啮合揩擦，但全螺杆由一根整体材料构成，也即全螺杆为一整个实体。

Claims (1)

1、一种热固性粉末涂料双螺杆挤出机用的复合螺杆，其截面形状由一端向另一端分段变化，顺次为带有传动结构的传动轴颈段(1)、带有较大螺距的狭带式螺纹的送料段(2)、由若干厚度相等截面形状相同但配置方向不同的捏合块摞合而成的混炼段(3)和带有较小螺距的狭带式螺纹的挤出段(4)，其中送料段(2)、混炼段(3)和挤出段(4)的外圆最大回转直径相同，齿形可分别与配偶螺杆相应段啮合揩擦，其特征在于，全螺杆为一根整个实体。
CN94225826U 1994-02-08 1994-02-08 一种热固性粉末涂料双螺杆挤出机用复合螺杆 Expired - Fee Related CN2199864Y (zh)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417817C (zh) * 2004-03-18 2008-09-10 北京化工大学 双端复合齿型迷宫螺旋泵
CN101890801A (zh) * 2010-04-27 2010-11-24 昆山科信橡塑机械有限公司 低烟无卤料下阶螺杆
CN101898411A (zh) * 2010-04-27 2010-12-01 昆山科信橡塑机械有限公司 低烟无卤料专用螺杆
CN103831905A (zh) * 2012-11-21 2014-06-04 陈下放 一种混炼机用螺杆
CN108697449A (zh) * 2016-02-07 2018-10-23 胡瓦伊斯Ip控股有限公司 具有压缩属性的锚螺钉

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100417817C (zh) * 2004-03-18 2008-09-10 北京化工大学 双端复合齿型迷宫螺旋泵
CN101890801A (zh) * 2010-04-27 2010-11-24 昆山科信橡塑机械有限公司 低烟无卤料下阶螺杆
CN101898411A (zh) * 2010-04-27 2010-12-01 昆山科信橡塑机械有限公司 低烟无卤料专用螺杆
CN103831905A (zh) * 2012-11-21 2014-06-04 陈下放 一种混炼机用螺杆
CN108697449A (zh) * 2016-02-07 2018-10-23 胡瓦伊斯Ip控股有限公司 具有压缩属性的锚螺钉

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