CN203019654U - 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
CN203019654U
CN203019654U CN2012205494644U CN201220549464U CN203019654U CN 203019654 U CN203019654 U CN 203019654U CN 2012205494644 U CN2012205494644 U CN 2012205494644U CN 201220549464 U CN201220549464 U CN 201220549464U CN 203019654 U CN203019654 U CN 203019654U
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China
Prior art keywords
screws
screw
extruder
machine barrel
steam vent
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Expired - Fee Related
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CN2012205494644U
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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 CN2012205494644U priority Critical patent/CN203019654U/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
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • 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

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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，依次啮合；；机筒的截面形状为长圆形，机筒上具有针对每根螺杆的排气孔，排气孔与大气相通；多螺杆结构具有五根螺杆，中间螺杆为主动螺杆，两侧的四个螺杆对称分布为被动螺杆；五根螺杆的直径相等。该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。

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，所述多螺杆同向旋转，每个螺杆轴线在同一水平面上，依次啮合；所述机筒的截面形状为长圆形，机筒上具有针对每根螺杆的排气孔，排气孔与大气相通。 
进一步地，所述多螺杆结构具有五根螺杆，中间螺杆为主动螺杆，两侧的四个螺杆对称分布为被动螺杆。 
进一步地，所述五根螺杆的直径相等。 
进一步地，所述排气孔的数量为八个，分别布置在机筒的同一截面上。 
进一步地，所述机筒上的排气孔，上端四个，下端四个，两侧边缘的两个螺杆分别对应有一个排气孔，其他三个螺杆各对应有上下两个排气孔。 
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-机筒；2-排气孔；3-螺杆。
具体实施方式
如图1所示，多根螺杆3同向旋转；机筒1的截面形状类似于多根螺杆啮合后的外形，每个螺杆轴线在同一水平面上，机筒1上具有排气孔2。。 
多螺杆结构具有五根螺杆，如图中螺杆3。 
机筒1的截面形状为长圆形。 
排气孔2的数量为8个，分别布置在机筒的同一截面上，为是排气效率高，机筒1上的排气孔2，上端四个，下端四个，两侧边缘的两个螺杆分别对应有一个排气孔，其他三个螺杆各对应有上下两个排气孔。 
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 (4)

1.一种挤压机的多螺杆结构，包括螺杆和机筒，其特征在于，所述多螺杆同向旋转，每个螺杆轴线在同一水平面上，依次啮合；所述机筒的截面形状为长圆形，机筒上具有针对每根螺杆的排气孔，排气孔与大气相通。
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五根螺杆，中间螺杆为主动螺杆，两侧的四个螺杆对称分布为被动螺杆，五根螺杆的直径相等。
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，所述排气孔的数量为八个，分别布置在机筒的同一截面上。
4.根据权利要求3所述的挤压机的多螺杆结构，其特征在于，所述机筒上的排气孔，上端四个，下端四个，两侧边缘的两个螺杆分别对应有一个排气孔，其他三个螺杆各对应有上下两个排气孔。
CN2012205494644U 2012-10-25 2012-10-25 挤压机的多螺杆结构 Expired - Fee Related CN203019654U (zh)

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Publications (1)

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CN203019654U true CN203019654U (zh) 2013-06-26

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C17 Cessation of patent right
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Granted publication date: 20130626

Termination date: 20131025