WO2017005032A1 - 一种自润滑顶杆导向装置 - Google Patents

一种自润滑顶杆导向装置 Download PDF

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Publication number
WO2017005032A1
WO2017005032A1 PCT/CN2016/079341 CN2016079341W WO2017005032A1 WO 2017005032 A1 WO2017005032 A1 WO 2017005032A1 CN 2016079341 W CN2016079341 W CN 2016079341W WO 2017005032 A1 WO2017005032 A1 WO 2017005032A1
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WO
WIPO (PCT)
Prior art keywords
lubricating
self
guiding structure
ejector rod
automatic
Prior art date
Application number
PCT/CN2016/079341
Other languages
English (en)
French (fr)
Inventor
张新建
马颖丹
Original Assignee
北京谊安医疗系统股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 北京谊安医疗系统股份有限公司 filed Critical 北京谊安医疗系统股份有限公司
Publication of WO2017005032A1 publication Critical patent/WO2017005032A1/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
    • 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
    • B29C45/26—Moulds
    • 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

Definitions

  • the present invention relates to the field of ventilator equipment, and in particular to a self-lubricating ram guide.
  • a device that uses the ejector or thimble telescopic motion to control the opening or stroke of its associated structure is often used in ventilators.
  • the ejector or thimble frequently moves, which requires lubricity of the ejector or thimble.
  • the resistance during the movement is small and there is no stuck.
  • the guiding structure 2 and the ejector pins 1 inserted therein are all made of metal material, and grease is applied before assembly to improve the lubricity.
  • This structure has certain disadvantages.
  • the ejector and the guiding structure are made of different metal materials, the long-term movement (dry friction) of the two will grind out the metal powder, which will pollute the working environment of the structure. For some equipment that has high requirements for cleanliness, such powders are unacceptable and may cause other related problems.
  • the present invention is directed to the above structural deficiencies and provides an improved self-lubricating ram guide.
  • the self-lubricating ram guide of the present invention comprises a guiding structure 2 and a ram 1 inserted therein, wherein the contact surface of the guiding structure 2 with the ram 1 is provided with a self-lubricating layer 3.
  • the self-lubricating layer 3 is a PEEK material. Further preferably, the self-lubricating layer 3 is mounted on the guiding structure 2.
  • the present invention is directed to the drawbacks of the prior art in that a self-lubricating layer is provided on the contact surface of the guiding structure and the ram, for example, a self-lubricating material such as a PEEK material or a PTFE material (polytetrafluoroethylene).
  • a self-lubricating material such as a PEEK material or a PTFE material (polytetrafluoroethylene).
  • PEEK polyetheretherketone
  • polyetheretherketone is a special engineering plastic with excellent performance. It has high temperature resistance of 260 degrees, excellent mechanical properties, good self-lubricating property, chemical corrosion resistance, flame retardancy and wear resistance.
  • PEEK is a plastic that combines toughness and rigidity and balances it, especially its excellent fatigue resistance to alternating stress. It is the most outstanding of all plastics and comparable to alloy materials; PEEK has outstanding self-lubricating properties and is suitable for strict requirements of low friction coefficient and wear resistance.
  • the self-lubricating properties of PTFE (polytetrafluoroethylene) materials are similar to those of PEEK. This combination of materials can solve the problem of lubrication and grinding out of the powder.
  • the invention inserts a wear-resistant self-lubricating material on the contact surface of the guiding structure and the ejector, so that the material of the guiding structure becomes a composite material, which can ensure the strength of the guiding structure is constant, and can solve the lubrication problem of the ejector movement. .
  • FIG. 1 is a schematic view of a conventional jack and its guiding device.
  • FIG. 2 is a schematic view of the self-lubricating ram guide of the present invention.
  • the self-lubricating ram guide of the present invention comprises a guiding structure 2 and a ram 1 inserted therein, wherein the contact surface of the guiding structure 2 with the ram 1 is provided with a self-lubricating layer 3, for example a self-lubricating layer 3 of PEEK material embedded in the guiding structure 2.
  • the jack 1 When the jack 1 is stretched and contracted along the guiding structure 2, the jack 1 interacts with the self-lubricating layer 3, and the lubricating effect can be achieved without applying the grease, and the problem that the metal rubs against each other and the powder is easily ground is avoided.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)

Abstract

一种自润滑顶杆导向装置，包括导向结构(2)和插入其中的顶杆(1)，导向结构(2)与顶杆(1)的接触面设置有自润滑层(3)，自润滑层(3)为PEEK或PTFE材料，镶嵌在导向结构(2)上，保证了导向结构的强度不变，并解决了顶杆运动的润滑问题。

Description

一种自润滑顶杆导向装置 技术领域
本发明涉及呼吸机设备领域，具体地，涉及一种自润滑顶杆导向装置。
背景技术
呼吸机中经常会用到一种利用顶杆或顶针伸缩运动来控制与其关联结构的开度或行程的装置，这种装置中顶杆或顶针频繁动作，这就要求顶杆或顶针的润滑性好，运动过程中阻力小无卡滞。
目前此种装置多为图1所示，导向结构2和插入其中的顶杆1均为金属材料，装配之前涂抹润滑脂来提高其润滑性。这种结构存在一定的缺点，首先，虽然装配时在顶杆1与导向结构2之间涂了润滑脂，但随着时间的推移，润滑性能会降低。由于呼吸机装置的精密性和复杂性，除非该模块出现故障需整套更换，一般情况下不会对其进行拆装二次涂润滑脂，这就可能存在隐患，机器在使用过程中顶杆由于润滑性不好导致卡滞，致使机器无法正常运行；其次，由于顶杆和导向结构为不同的金属材料，二者长期运动(干摩擦)会研磨出金属粉末，这将会污染结构工作环境，对于一些对清洁度有较高要求的的设备，这样的粉末是无法被接受的，还可能会引起其他的相关问题。
发明内容
本发明针对以上的结构缺陷，对这种结构进行改进，提供了一种自润滑顶杆导向装置。
本发明的自润滑顶杆导向装置，包括导向结构2和插入其中的顶杆1，其中，所述导向结构2与顶杆1的接触面设置有自润滑层3。
根据本发明的自润滑顶杆导向装置，优选地，所述自润滑层3为PEEK材料。进一步优选地，所述自润滑层3镶嵌在导向结构2上。
本发明针对现有技术存在的缺陷，在导向结构与顶杆的接触面设置自润滑层，例如，镶嵌PEEK材料或PTFE材料(聚四氟乙烯)等具有自润滑性的材料。
PEEK(polyetheretherketone)，即聚醚醚酮，是一种性能优异的特种工程塑料，耐高温260度、机械性能优异、自润滑性好、耐化学品腐蚀、阻燃、耐磨。PEEK是韧性和刚性兼备并取得平衡的塑料，特别是它对交变应力的优良耐疲劳 是所有塑料中最出众的，可与合金材料媲美；PEEK具有出众的自润滑特性，适合于严格要求低摩擦系数和耐磨使用。PTFE(聚四氟乙烯)材料自润滑特性与PEEK相近。采用这种材料组合方式可以很好的解决润滑问题和研磨出粉末的问题。
本发明在导向结构与顶杆的接触面镶嵌一种耐磨自润滑材料，使导向结构的材料成为一种组合材料，既能保证导向结构的强度不变，又可以解决顶杆运动的润滑问题。
附图说明
图1是现有的顶杆及其导向装置示意图。
图2是本发明的自润滑顶杆导向装置示意图。
附图标记
1、顶杆 2、导向结构 3、自润滑层
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
如图2所示，本发明的自润滑顶杆导向装置，包括导向结构2和插入其中的顶杆1，其中，所述导向结构2与顶杆1的接触面设置有自润滑层3，例如，镶嵌在导向结构2上PEEK材料的自润滑层3。
当顶杆1沿导向结构2伸缩时，顶杆1与自润滑层3相互作用，无需格外涂抹润滑脂即可起到润滑作用，并避免了金属间相互摩擦易研磨出粉末的问题。
当然，本发明还可以有多种实施例，在不背离本发明精神及其实质的情况下，熟悉本领域的技术人员可根据本发明的公开做出各种相应的改变和变型，但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims (3)

  1. 一种自润滑顶杆导向装置，包括导向结构(2)和插入其中的顶杆(1)，其特征在于，所述导向结构(2)与顶杆(1)的接触面设置有自润滑层(3)。
  2. 根据权利要求1所述的自润滑顶杆导向装置，其特征在于，所述自润滑层(3)为PEEK或PTFE材料。
  3. 根据权利要求1或2所述的自润滑顶杆导向装置，其特征在于，所述自润滑层(3)镶嵌在导向结构(2)上。
PCT/CN2016/079341 2015-07-06 2016-04-15 一种自润滑顶杆导向装置 WO2017005032A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113829587A (zh) * 2021-10-26 2021-12-24 宁波杜亚机电技术有限公司 一种注塑模具的顶杆

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875003A (en) * 1959-03-02 1961-08-16 Glacier Co Ltd Ball joints
GB1171570A (en) * 1968-06-04 1969-11-19 Union Carbide Corp Gas Sealing Assembly
CN201841637U (zh) * 2010-10-26 2011-05-25 宁波远东制模有限公司 一种注塑模具的斜顶杆保护装置
CN102380763A (zh) * 2011-11-09 2012-03-21 安徽铜峰电子股份有限公司 更换链条润滑套的装置
CN103824719A (zh) * 2012-11-16 2014-05-28 哈尔滨飞机工业集团有限责任公司 一种微动开关触发装置
CN203726769U (zh) * 2014-01-06 2014-07-23 宁波远东制模有限公司 一种中大型模具斜顶大角度升角组合滑座

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875003A (en) * 1959-03-02 1961-08-16 Glacier Co Ltd Ball joints
GB1171570A (en) * 1968-06-04 1969-11-19 Union Carbide Corp Gas Sealing Assembly
CN201841637U (zh) * 2010-10-26 2011-05-25 宁波远东制模有限公司 一种注塑模具的斜顶杆保护装置
CN102380763A (zh) * 2011-11-09 2012-03-21 安徽铜峰电子股份有限公司 更换链条润滑套的装置
CN103824719A (zh) * 2012-11-16 2014-05-28 哈尔滨飞机工业集团有限责任公司 一种微动开关触发装置
CN203726769U (zh) * 2014-01-06 2014-07-23 宁波远东制模有限公司 一种中大型模具斜顶大角度升角组合滑座

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113829587A (zh) * 2021-10-26 2021-12-24 宁波杜亚机电技术有限公司 一种注塑模具的顶杆

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