CN101402238B - 注塑机 - Google Patents

注塑机 Download PDF

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Publication number
CN101402238B
CN101402238B CN200810166974.1A CN200810166974A CN101402238B CN 101402238 B CN101402238 B CN 101402238B CN 200810166974 A CN200810166974 A CN 200810166974A CN 101402238 B CN101402238 B CN 101402238B
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CN
China
Prior art keywords
injection machine
main shaft
permanent magnet
rotor
roller main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200810166974.1A
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English (en)
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CN101402238A (zh
Inventor
乌尔里希·埃克尔
克劳斯·乔治
格哈德·马奇埃科
乔治·彭格勒
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Siemens AG
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Siemens AG
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Publication of CN101402238A publication Critical patent/CN101402238A/zh
Application granted granted Critical
Publication of CN101402238B publication Critical patent/CN101402238B/zh
Expired - Fee Related legal-status Critical Current
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Classifications

    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5024—Drive means therefor screws rotated by the coaxial rotor of an electric motor
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5028—Drive means therefor screws axially driven by the coaxial rotor of an electric motor
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/504—Drive means therefor electric motors for rotary and axial movement of the screw being coaxial with the screw
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
    • B29C45/50—Axially movable screw
    • B29C45/5008—Drive means therefor
    • B29C2045/5076—Drive means therefor using a single drive motor for rotary and for axial movements of the screw

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

在根据本发明的注塑机(1)中将永磁体(7)安装到注塑机(1)的行星式滚子主轴或滚珠螺旋轴或者主轴螺帽(5)上。

Description

注塑机
技术领域
在电动注塑机中经常使用具有空心轴的力矩电机(具有高转矩的无传动装置的直接驱动系统)。
背景技术
在此，电机转子必须具有较大的惯性力矩。在电动注塑机中，除了必须需要用于生产的“高分辨率的”周期时间之外，还需要用于技术工艺的高动力的驱动装置，以便可以干净地生产部件。
在当今的根据现有技术的电动注塑机中通过安装大驱动功率的系统实现所要求的高动力。由此例如在喷射轴上出现这种情况，即为实现加速时间，将设置的电功率或可供使用的转矩大多数(>90％)用于使旋转的电机转子部件加速。
特别是在空心轴电机中，电机或者主轴的惯性起作用。在轴加速时，与轴自身的线性运动相比，有时更多地将能量存留到电机-主轴-联合体的旋转中。这种情况特别在注塑机中是非常重要的。在此，电动机器仍然一直没有达到液压解决方案的加速度和速度。
发明内容
因此，本发明的目的是减少动力传动系统中的惯性力矩，这就是说，减少旋转的电机部件和/或注塑机的旋转的部件的惯性力矩，以便特别是在与现有技术相比减少设置的驱动功率或者减少可供使用的转矩的情况下也可以毫无问题地喷射注塑薄壁部件。
为了减少在注塑机的动力传动系统中的惯性力矩而提出，将必须的永磁体(其在现有技术中本来对应于电机转子)和在机械上必须的行星式滚子主轴(Planetenrollspindel)或球形滚子主轴设计为集成的、紧凑的、机电一体化的组件。
通过直接将永磁体安装到这样修改的注塑机主轴上，不但减少了旋转的部件质量而且减小了直径。因此，可由此实现的加速度值相对于(减小的)电机转子(其现在不必再包括永磁体)的半径成平方地增长。永磁体可以在此安装到行星式滚子主轴或球形滚子主轴上或安装到主轴螺帽上。
因此，与现有技术相比，在力矩电机上可以取消空心轴。永磁体(之前安装在空心轴上)在主轴上或者在主轴螺帽上构成磁路。从而产生用于注塑机的力矩/主轴电机。
由此在使用根据本发明的想法时，在电动注塑机时实现这样的加速度值，利用该加速度值就可以毫无问题地喷射注塑薄壁部件，而不会在喷射出液体塑料时塑料凝固到冷的模具中。
因此，本发明提出一种注塑机，其中永磁体安装到注塑机的行星式滚子主轴或球形滚子主轴上或安装在主轴螺帽上。由此产生特别的效果，即在与现有技术的注塑机相比更少地设置注塑机的驱动功率的情况下，仍达到同样或甚至更好的加速度值，该加速度值是必需的，从而可以特别是毫无问题地喷射所谓的薄壁部件。
与喷射注塑的技术领域无关，由现有技术已知伺服电机，其永磁体粘接到旋转的主轴螺帽上。但对此至今仅仅已知，通过这种措施改善负荷分布和实现更长的使用寿命。此外，这种类型的电机已知仅仅用于这样的功率等级，该功率等级对于在注塑机中的使用是没有意义的/技术不可使用的，因为在此如开头所述通常需要明显更高的驱动功率。这种认知，即利用将永磁体集成到注塑机的行星式滚子主轴或球形滚子主轴或者主轴螺帽中可以减少所要求的驱动功率并且随后也完全可以考虑低功率的电机，已经归属于根据本发明的认知部分而非归属于现有技术。
现有技术中在注塑机中通常设置的大的电功率可以通过根据本发明的惯性的减少而显著减少。由此，注塑机具有在技术要求的动力方面的巨大优点。通过现在充分减少的驱动功率也获得较少的注塑机投资费用。该注塑机例如可以设计得更小。电机更换(例如修理时)也更容易，因为电机可以更小地。此外，通常可以装备具有传感器系统的更简单、更便宜以及更小的电机。
附图说明
附图中详细示出本发明的一个实施例。其中：
附图示出根据本发明的注塑机的重要构件。
具体实施方式
在附图中示出根据本发明的注塑机1的重要驱动部件。
注塑机包括螺杆3、行星式螺母5以及塑化转子11。
在此，永磁体7直接安装到行星式螺母5的外部圆周上。此外塑化转子11在这里同样包括永磁体7，该永磁体安装到该转子11的外部圆周上。
注塑机的定子7包围行星式螺母5以及塑化转子11。在此，定子7可以分成两个部分并在行星式螺母5与塑化转子11之间具有空隙。
通过这些措施，根据本发明的注塑机具有与现有技术相比显著减小的惯性。驱动装置的动力被改善，并且具有相当小的功率的电机现在也可以考虑用于根据本发明的应用。

Claims (1)

1.一种注塑机(1)，其中，将用于形成力矩电机的永磁体(7)安装到所述注塑机的行星式滚子主轴或球形滚子主轴上，其中，所述行星式滚子主轴或球形滚子主轴包括主轴螺帽(5)，并且用于形成所述力矩电机的所述永磁体(7)在周向方向上安装到所述主轴螺帽(5)的外部圆周上，其中，设置有塑化转子(11)，所述塑化转子(11)具有在所述周向方向上设置在外部圆周上的用于形成所述力矩电机的永磁体(7)，其中，第一定子包围所述主轴螺帽(5)，并且其中第二定子包围所述塑化转子(11)，其中所述第一和所述第二定子之间存在间隙，其中对应于所述塑化转子(11)的所述第二定子在纵向方向上的长度短于所述塑化转子(11)的长度。
CN200810166974.1A 2007-10-01 2008-09-27 注塑机 Expired - Fee Related CN101402238B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07019237.2 2007-10-01
EP07019237A EP2045064A1 (de) 2007-10-01 2007-10-01 Spritzgießmaschine

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CN101402238A CN101402238A (zh) 2009-04-08
CN101402238B true CN101402238B (zh) 2014-01-22

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US (1) US7878784B2 (zh)
EP (1) EP2045064A1 (zh)
JP (1) JP5279432B2 (zh)
CN (1) CN101402238B (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101914724B1 (ko) 2012-12-17 2018-11-02 엘지이노텍 주식회사 모터의 회전자
US20160263808A1 (en) * 2015-03-13 2016-09-15 Davis-Standard Llc Direct drive extruder with a permanent magnet synchronous motor
CN111451474B (zh) * 2020-04-24 2021-03-05 燕山大学 双工位真空压铸机

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US6051896A (en) * 1998-05-01 2000-04-18 Nissei Plastic Industrial Co. Ltd Molding machine
CN1756639A (zh) * 2003-03-04 2006-04-05 住友重机械工业株式会社 注射成型机的驱动装置、注射装置及合模装置
CN1867438A (zh) * 2003-10-16 2006-11-22 住友重机械工业株式会社 电动注塑成型机及其成型方法

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Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6051896A (en) * 1998-05-01 2000-04-18 Nissei Plastic Industrial Co. Ltd Molding machine
CN1756639A (zh) * 2003-03-04 2006-04-05 住友重机械工业株式会社 注射成型机的驱动装置、注射装置及合模装置
CN1867438A (zh) * 2003-10-16 2006-11-22 住友重机械工业株式会社 电动注塑成型机及其成型方法

Also Published As

Publication number Publication date
JP2009083493A (ja) 2009-04-23
JP5279432B2 (ja) 2013-09-04
EP2045064A1 (de) 2009-04-08
US20090087505A1 (en) 2009-04-02
US7878784B2 (en) 2011-02-01
CN101402238A (zh) 2009-04-08

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