CN101520090A - 密封环 - Google Patents

密封环 Download PDF

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Publication number
CN101520090A
CN101520090A CN200910130751A CN200910130751A CN101520090A CN 101520090 A CN101520090 A CN 101520090A CN 200910130751 A CN200910130751 A CN 200910130751A CN 200910130751 A CN200910130751 A CN 200910130751A CN 101520090 A CN101520090 A CN 101520090A
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Prior art keywords
seal ring
thimble
ring
lug
sealing
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CN200910130751A
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CN101520090B (zh
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吉勒斯·博德尼特
扬·庞特
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GM Global Technology Operations LLC
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GM Global Technology Operations LLC
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/44—Free-space packings
    • F16J15/441—Free-space packings with floating ring
    • 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
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C45/4005—Ejector constructions; Ejector operating mechanisms
    • 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
    • B29C45/40—Removing or ejecting moulded articles
    • B29C2045/4063—Removing or ejecting moulded articles preventing damage to articles caused by the ejector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4998—Combined manufacture including applying or shaping of fluent material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Gasket Seals (AREA)
  • Sealing Devices (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Glass Compositions (AREA)
  • Materials For Medical Uses (AREA)

Abstract

本发明涉及一种密封环，尤其是用于自动变速器中的密封环。为了提供比现有的密封环的泄漏更少的密封环，本发明建议该密封环在密封表面上没有顶针痕迹。本发明提供一种具有更好的密封性和压力稳定性的密封环。当其用于自动变速器时，这些密封环能够在换挡期间改善驾驶性能和更好的压力稳定性。

Description

密封环
技术领域
本发明涉及一种密封环，尤其是用于自动变速器中的密封环。
背景技术
密封环应用于很多技术领域。例如，在自动变速器中，密封环被用于避免管路之间的液压泄漏。由于管路中存在高压，密封环的不完善将导致管路之间泄漏。
文献CA 2 427 972 A1描述了一种用于快速接头的波纹管密封。该波纹管密封设有环形部分，在环形部分一端设有相当平整的密封表面，而在环形部分的另一端设有波纹管部分。波纹管部分远离该环形部分突出，具有半圆形横截面，并且终止于位于波纹管部分顶点上的圆周密封垫圈。环形部分可设有金属加固环。波纹管部分的终端垫圈具有部分圆形横截面，该横截面直径大于波纹管部分的厚度。
由US 5,628,519A可知，描述了一种在整个长度上具有相同尺寸的密封环。这有赖于在注射成型密封环时正确定位注射材料的注射点来实现。尤其是，注射点从密封环整个长度的中心倾斜偏移±1°到±30°。
发明内容
本发明的目的在于提供一种比现有的密封环的泄漏更少的密封环。
根据本发明实现这个目的，因为该密封环没有位于密封面上的顶针痕迹。
本发明是基于以下考虑，在密封环的密封表面上存在导致泄漏的顶出器痕迹，尤其是顶针印记。这些顶出器痕迹产生于制造密封环的注射过程。为了使密封环能在注射完成后从模腔中取出，顶针或者说起模杆是必需的。由于顶针不可缺少，因此，本发明建议将顶针从密封环的密封表面上移动到别处以提高密封表面的平滑度。当顶针不再位于密封表面上时，它们就不再影响密封性。
本发明提供一种具有更好的密封性和压力稳定性的密封环。当其用于自动变速器时，这些密封环能够在换挡期间改善驾驶性能和更好的压力稳定性。
根据本发明的优选实施例，顶针位于密封环内侧。
顶针从密封表面移除，使得具有一个在密封环外侧没有顶针痕迹或任何毛刺的平整表面，使该平整表面紧紧压在壳体上从而避免任何泄漏。
在本发明的一个优选实施例中，顶针位于凸片上，该凸片设置在密封环内侧的凹进区域中。
当密封环从模腔中取出时，凸片被剪断，但可能有毛刺残余。由于将带有顶针的凸片设置在密封环内侧的凹进区域，这可以确保任何遗留下来的毛刺都处于不能影响密封环性能的凹进区域中。
本发明还提供了一种通过注射成型制造密封环，尤其是用于自动变速器中的密封环的方法，包括以下步骤：
提供密封环模具，在所述密封环的内侧具有多个凹进区域，带有顶针的凸片位于每个凹进区域中；
将材料注射到模具中从而注射成型密封环；
当密封环变硬时，抓住顶针上的密封环，并从模具中取出该密封环；
靠近密封环内侧壁剪断凸片。
这个方法能够获得具有非常平整的密封表面的密封环，确保良好的密封性能。
附图说明
以下将结合附图对本发明作详细的描述。
图1a和b根据本发明的密封环以及现有技术中的密封环的示意图；
图2a和b是位于自动变速器中两管路之间的、根据本发明的密封环以及现有技术中的密封环的示意图。
具体实施方式
在附图1a和b中，图示了处于注射成型状态的密封环设计。从图1a中可以看出，密封环1设有多个凹进区域2(这里是8个凹进区域2)，这些凹进区域2规则的分配在密封环的内表面上。这些凹进区域2具有圆弧部分。在每个凹进区域2的中间部分设置有凸片3，凸片3的自由端形成有顶针4。顶针4设有中心孔5，这容许顶出器抓住顶针4，在注射成形后将变硬的密封环1从模腔中取出。
附图1b图示了根据现有技术的密封环1。在这个密封环1上，顶针4位于密封环1的一侧。在用顶针4来抓住密封环1从而将其从模具中取出后，将顶针剪断，但是顶针印记和毛刺可能遗留在密封环1的表面上从而影响密封性能。
附图2a图示了位于自动变速器两管路(管路1，管路2)之间、根据本发明的密封环1。从图2a中能看出将密封环1紧紧压在管路1和管路2之间的壁上，因此利用紧紧压在壁上的几乎整个密封表面密封管路1和管路2。
即使管路1中的液压流体处于高压，密封环1也能确保良好的密封性能。
附图2b图示了根据现有技术的密封环1，该密封环如同图2a中的密封环1那样设置以便密封管路1和管路2。该密封环1在其密封表面(该表面是紧压在管路1和管路2之间的壁上的表面)上具有顶出器痕迹6。由于该顶出器痕迹6，在管路1和管路2之间存在泄漏。

Claims (4)

1、一种密封环，尤其是用于自动变速器中，其特征在于，该密封环(1)在密封表面上没有顶针痕迹。
2、如权利要求1所述的密封环，其特征在于，所述顶针(4)位于该密封环(1)的内侧。
3、如权利要求2所述的密封环，其特征在于，所述顶针(4)位于凸片(3)上，所述凸片位于密封环(1)内侧上的凹进区域(2)中。
4、一种通过注射成型制造密封环、尤其是用于自动变速器中密封环的方法，包括以下的步骤：
提供密封环(1)的制造模具，在所述密封环(1)的内侧具有多个凹进区域(2)，带有顶针(4)的凸片(3)位于每个凹进区域(2)中；
将材料注射到模具中从而注射成型密封环(1)；
当密封环(1)变硬时，抓住密封环(1)上的顶针(4)，并从模具中取出该密封环(1)；
靠近密封环(1)内侧壁剪断凸片(3)。
CN200910130751.4A 2008-02-13 2009-02-13 密封环 Expired - Fee Related CN101520090B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08002632.1 2008-02-13
EP08002632A EP2090417B1 (en) 2008-02-13 2008-02-13 Seal ring
EP080026321 2008-02-13

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CN101520090A true CN101520090A (zh) 2009-09-02
CN101520090B CN101520090B (zh) 2013-10-30

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US (1) US20090212502A1 (zh)
EP (1) EP2090417B1 (zh)
CN (1) CN101520090B (zh)
AT (1) ATE507953T1 (zh)
DE (1) DE602008006665D1 (zh)
RU (1) RU2478855C2 (zh)

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* Cited by examiner, † Cited by third party
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CN103697165A (zh) * 2013-12-23 2014-04-02 陈焕祥 一种热泵油槽的可调式密封油环
WO2017024989A1 (zh) * 2015-08-07 2017-02-16 黄若 粉末注射成形活塞环的设计制造方法

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AT514828B1 (de) * 2013-09-24 2015-06-15 Hoerbiger Kompressortech Hold Verfahren und Form zur Herstellung von Dichtplatten im Spritzguss sowie entsprechend hergestellte Dichtplatten
ES2966404T3 (es) 2017-01-10 2024-04-22 Saint Gobain Performance Plastics L S Gmbh Anillos de sellado moldeados por inyección y métodos para fabricarlos
US10648567B2 (en) 2017-01-10 2020-05-12 Saint-Gobain Performance Plastics L+S GMBH Seal rings and methods for making them

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697165A (zh) * 2013-12-23 2014-04-02 陈焕祥 一种热泵油槽的可调式密封油环
WO2017024989A1 (zh) * 2015-08-07 2017-02-16 黄若 粉末注射成形活塞环的设计制造方法

Also Published As

Publication number Publication date
EP2090417A1 (en) 2009-08-19
CN101520090B (zh) 2013-10-30
EP2090417B1 (en) 2011-05-04
US20090212502A1 (en) 2009-08-27
DE602008006665D1 (de) 2011-06-16
RU2478855C2 (ru) 2013-04-10
RU2009104923A (ru) 2010-08-20
ATE507953T1 (de) 2011-05-15

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