CN202862571U - 挤压机的多螺杆结构 - Google Patents

挤压机的多螺杆结构 Download PDF

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Publication number
CN202862571U
CN202862571U CN2012205494146U CN201220549414U CN202862571U CN 202862571 U CN202862571 U CN 202862571U CN 2012205494146 U CN2012205494146 U CN 2012205494146U CN 201220549414 U CN201220549414 U CN 201220549414U CN 202862571 U CN202862571 U CN 202862571U
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China
Prior art keywords
machine barrel
screw rod
screw
extruder
screws
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Expired - Fee Related
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CN2012205494146U
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English (en)
Inventor
吴建国
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Wuxi Tianhui Plastic Machinery Co Ltd
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Wuxi Tianhui Plastic Machinery Co Ltd
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Priority to CN2012205494146U priority Critical patent/CN202862571U/zh
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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
    • B29C48/395—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
    • B29C48/435—Sub-screws
    • 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
    • B29C48/405—Intermeshing co-rotating screws
    • 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
    • B29C48/425—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 using three or more screws

Landscapes

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

Abstract

本实用新型提供挤压机的多螺杆结构，所述螺杆具有多根，同向旋转，每个螺杆轴线在同一水平面上；该同向旋转的多根螺杆的动力装置包括电动机及其传动机构；所述机筒的截面形状如花瓣形，机筒上各点的壁厚均匀或近似均匀，机筒上具有排气孔；多螺杆结构具有三根螺杆，中间螺杆为主动螺杆，两侧为被动螺杆该挤压机的多螺杆结构，结构简单，方便制造与安装，针对于多根螺杆的设计，其机筒的设计也应具有相应的结构形状，随着物料的挤出，机筒内腔的逐渐缩小，使挤出压力增大，因此很容易在出料段建立起所需的压力，提高产品质量，提高挤出效率。

Description

挤压机的多螺杆结构
技术领域
本实用新型涉及一种挤压机的多螺杆结构。 
技术背景
塑料挤出机的螺杆结构形式较多，分为单螺杆、双螺杆和多螺杆，而双螺杆的挤出机在市场占有较大的比重，为适应螺杆在挤出各段的特点，设计其在各段的不同结构形式，以提高产品质量和提高生产效率。 
实用新型内容
为实现以上所述，本实用新型提供挤压机的多螺杆结构，所述螺杆具有多根，同向旋转，每个螺杆轴线在同一水平面上；该同向旋转的多根螺杆的动力装置包括电动机及其传动机构；所述机筒的截面形状如花瓣形，机筒上各点的壁厚均匀或近似均匀，机筒上具有排气孔。 
进一步地，所述多螺杆结构具有三根螺杆，中间螺杆为主动螺杆，两侧为被动螺杆。 
进一步地，所述机筒的截面形状类似椭圆形，机筒的壁厚均匀，以利于散热和机筒温度控制。 
进一步地，所述排气孔的数量为四个，分别布置在机筒的同一截面上， 
进一步地，所述排气孔设在机筒的上端和下端各两个，且距每根螺杆最近处设置，中间螺杆的排气孔数量为两个，该种布置方式有利于排气，释放机筒内压力，使压力更容易得到控制，以免发生机筒爆裂。
    本实用新型涉及的这种挤压机的多螺杆结构，结构简单，方便制造与安装，针对于多根螺杆的设计，其机筒的设计也应具有相应的结构形状，随着物料的挤出，机筒内腔的逐渐缩小，使挤出压力增大，因此很容易在出料段建立起所需的压力，提高产品质量，提高挤出效率。 
附图说明
图1是本实用新型挤压机的多螺杆结构示意图； 
1-中间螺杆；2-左侧螺杆；3-右侧螺杆；4-机筒；5-排气孔。
具体实施方式
如图1所示，螺杆具有三根，中间螺杆1；左侧螺杆2和右侧螺杆3，同向旋转，三根螺杆的动力源来自于一台电动机，对于本领域技术人员只需通过齿轮传动设计，即可实现；机筒4的截面形状如花瓣形，每个螺杆轴线在同一水平面上。 
该三根螺杆，中间螺杆1为主动螺杆，左侧螺杆2和右侧螺杆3为被动螺杆。 
机筒4的截面形状类似椭圆形，机筒4的壁厚均匀，以利于散热和机筒4温度控制。 
排气孔5的数量为四个，分别布置在机筒4的同一截面上， 
排气孔5设在机筒4的上端和下端各两个，且距每根螺杆最近处设置，中间螺杆1的排气孔数量为两个，该种布置方式有利于排气，释放机筒4内压力，使压力更容易得到控制，以免发生机筒爆裂。
该挤压机的多螺杆结构，能够有效的对物料剪切挤压，进而带来更好的熔融状态，对于一些要求较高的产品，该多螺杆结构能够带来产品质量的保证和效率的提高。 
本实用新型所述的具体实施方式并不构成对本申请范围的限制，凡是在本实用新型构思的精神和原则之内，本领域的专业人员能够作出的任何修改、等同替换和改进等均应包含在本实用新型的保护范围之内。 

Claims (1)

1.一种挤压机的多螺杆结构，包括螺杆和机筒，其特征在于，所述螺杆具有多根，同向旋转，每个螺杆轴线在同一水平面上；该同向旋转的多根螺杆的动力装置包括电动机及其传动机构；所述机筒的截面形状如花瓣形，机筒上各点的壁厚均匀或近似均匀，机筒上具有排气孔，所述排气孔的数量为四个，分别布置在机筒的同一截面上，所述排气孔设在机筒的上端和下端各两个，且距每根螺杆最近处设置，中间螺杆的排气孔数量为两个，该种布置方式有利于排气，释放机筒内压力，使压力更容易得到控制，以免发生机筒爆裂。
 2. 根据权利要求1所述的挤压机的多螺杆结构，其特征在于，所述多螺杆结构具有三根螺杆，中间螺杆为主动螺杆，两侧为被动螺杆。
 3. 根据权利要求1所述的挤压机的多螺杆结构，其特征在于，所述机筒的截面形状类似椭圆形，机筒的壁厚均匀，以利于散热和机筒温度控制。
CN2012205494146U 2012-10-25 2012-10-25 挤压机的多螺杆结构 Expired - Fee Related CN202862571U (zh)

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Granted publication date: 20130410

Termination date: 20131025