JP3403153B2 - Composition for sliding member and sliding member - Google Patents
Composition for sliding member and sliding memberInfo
- Publication number
- JP3403153B2 JP3403153B2 JP2000216859A JP2000216859A JP3403153B2 JP 3403153 B2 JP3403153 B2 JP 3403153B2 JP 2000216859 A JP2000216859 A JP 2000216859A JP 2000216859 A JP2000216859 A JP 2000216859A JP 3403153 B2 JP3403153 B2 JP 3403153B2
- Authority
- JP
- Japan
- Prior art keywords
- sliding member
- composition
- sliding
- carbon material
- porous carbon
- 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 - Lifetime
Links
- 239000000203 mixture Substances 0.000 title claims description 90
- 239000003575 carbonaceous material Substances 0.000 claims description 63
- 239000000843 powder Substances 0.000 claims description 50
- 229920005989 resin Polymers 0.000 claims description 25
- 239000011347 resin Substances 0.000 claims description 25
- 229920006324 polyoxymethylene Polymers 0.000 claims description 24
- 229930182556 Polyacetal Natural products 0.000 claims description 20
- 229920005992 thermoplastic resin Polymers 0.000 claims description 20
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 8
- 229910052731 fluorine Inorganic materials 0.000 claims description 8
- 239000011737 fluorine Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 235000009566 rice Nutrition 0.000 claims description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims description 5
- 238000010304 firing Methods 0.000 claims description 4
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000009958 sewing Methods 0.000 description 36
- 238000000465 moulding Methods 0.000 description 20
- 238000005461 lubrication Methods 0.000 description 17
- 239000002184 metal Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 241000209094 Oryza Species 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000008188 pellet Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920002530 polyetherether ketone Polymers 0.000 description 5
- 239000004696 Poly ether ether ketone Substances 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 4
- 229910021397 glassy carbon Inorganic materials 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- -1 polyoxymethylene Polymers 0.000 description 3
- 244000068988 Glycine max Species 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000010903 husk Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920002312 polyamide-imide Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920006380 polyphenylene oxide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 102220057728 rs151235720 Human genes 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
- Sliding-Contact Bearings (AREA)
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、摺動部位の摩耗や
焼付損傷を無潤滑で長期間に亘り防止することのできる
摺動部材用組成物および摺動部材に関する。The present invention relates to relates to composition for a sliding member and a sliding member which can be prevented over a long period of time wear and seizure damage sliding parts without lubrication.
【０００２】[0002]
【従来の技術】従来から麩糠類にフェノール樹脂などの
熱硬化性樹脂を配合して原料組成物とし、これを成型金
型を用いて成型した後に５００℃以上の温度で焼成する
ことにより形成される多孔性炭素材が知られている。こ
の多孔性炭素材は、硬質で、無潤滑下における摩擦抵抗
を低くすることができるなどの理由により、摺動部位を
支持する軸受などの摺動部材たる摺動部品としての用途
が提案されている。2. Description of the Related Art Conventionally, a bran bran is blended with a thermosetting resin such as a phenol resin to prepare a raw material composition, which is molded by using a molding die and then baked at a temperature of 500 ° C. or higher. Porous carbon materials are known. This porous carbon material is hard and has been proposed for use as a sliding component that is a sliding member such as a bearing that supports a sliding portion because of its low friction resistance without lubrication. There is.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前述し
た従来の多孔性炭素材においては、原料組成物の成型品
に焼成を施すと大幅な寸法変化をもたらすため、摺動部
品を直接製造する場合には、摺動部品の寸法精度を確保
することができないという問題点があった。However, in the above-mentioned conventional porous carbon material, when a molded product of the raw material composition is fired, a large dimensional change occurs, so that it is necessary to directly manufacture sliding parts. Had a problem that the dimensional accuracy of the sliding parts could not be secured.
【０００４】また、このような問題点に対処するため、
原料組成物の成型体に焼成を施して得た成型品に対して
切削加工などの加工を後から施すことにより、円筒形状
などの所定形状の摺動部品を形成することが考えられる
が、このような摺動部品は、多孔質の成型品を加工する
ことになり、加工に多大な労力と時間とを必要とし低価
格化を阻害するとともに、小さくて薄いものを形成する
のが困難で小型化を阻害するという問題点がある。Further, in order to deal with such a problem,
It is conceivable that a sliding part having a predetermined shape such as a cylindrical shape is formed by subjecting a molded product obtained by firing a molded body of the raw material composition to processing such as cutting afterwards. Such sliding parts require processing of a porous molded product, which requires a great deal of labor and time for processing, which hinders cost reduction, and it is difficult to form a small and thin product, which makes it compact. There is a problem in that
【０００５】さらに、従来の多孔性炭素材により形成し
た摺動部品は、摺動部品として用いるには脆いという特
性を有している問題点もあった。Further, there is a problem that the conventional sliding parts formed of a porous carbon material have a characteristic that they are fragile when used as sliding parts.
【０００６】そこで、生産性に優れ、かつ、低価格化を
容易に図ることのできる多孔性炭素材を用いた摺動部材
用組成物および摺動部材が望まれている。[0006] Therefore, high productivity, and low cost to can be easily achieved for the sliding member composition using a porous carbon material Contact good beauty sliding member is desired.
【０００７】本発明はこれらの点に鑑みてなされたもの
であり、生産性に優れ、かつ、低価格化を容易に図るこ
とのできる多孔性炭素材を用いた摺動部材用組成物およ
び摺動部材を提供することを目的とする。The present invention has been made in view of these points, and is a composition for a sliding member using a porous carbon material which is excellent in productivity and can be easily reduced in cost.
And to provide a fretting member.
【０００８】[0008]
【課題を解決するための手段】前述した目的を達成する
ため特許請求の範囲の請求項１に係る本発明の摺動部材
用組成物の特徴は、熱可塑性樹脂に多孔性炭素材の粉末
を含有させてなる点にある。そして、このような構成を
採用したことにより、摺動部材用組成物を成形加工する
と、摺動部位の摩耗や焼付損傷を無潤滑下で長期間に亘
り確実に防止することのできる摺動部材を、任意の形状
にて容易に得ることができる。したがって、生産性に優
れ、かつ、低価格化な多孔性炭素材を用いた摺動部材を
容易に得ることができる。In order to achieve the above-mentioned object, the feature of the composition for a sliding member of the present invention according to claim 1 is that the thermoplastic resin contains a powder of a porous carbon material. It is included. By adopting such a configuration, when the composition for a sliding member is molded and processed, the sliding member can surely prevent wear and seizure damage of the sliding portion for a long period of time without lubrication. Can be easily obtained in any shape. Therefore, it is possible to easily obtain the sliding member using the porous carbon material, which has excellent productivity and is inexpensive.
【０００９】また、請求項２に係る本発明の摺動部材用
組成物の特徴は、請求項１において、熱可塑性樹脂の含
有量が５０〜９０重量％であり、多孔性炭素材の粉末の
含有量が１０〜５０重量％である点にある。そして、こ
のような構成を採用したことにより、摺動部材用組成物
を成形加工する際の流動性を損なうことがなく、かつ、
摺動部位の摩耗や焼付損傷を無潤滑下で長期間に亘り確
実に防止するために必要な最も好ましい含有量を得るこ
とができる。The sliding member composition of the present invention according to claim 2 is characterized in that in claim 1, the content of the thermoplastic resin is 50 to 90% by weight, and the composition of the porous carbon material powder is The point is that the content is 10 to 50% by weight. And, by adopting such a configuration, without impairing the fluidity when molding the sliding member composition, and,
It is possible to obtain the most preferable content necessary for surely preventing abrasion and seizure damage of sliding parts for a long period of time without lubrication.
【００１０】また、請求項３に係る本発明の摺動部材用
組成物の特徴は、請求項１または請求項２において、多
孔性炭素材の粒度が２〜１００μｍである点にある。そ
して、このような構成を採用したことにより、摺動部材
用組成物を成形加工する際の流動性を損なうことがな
く、かつ、摺動部位の摩耗や焼付損傷を無潤滑下で長期
間に亘り確実に防止するために必要な最も好ましい粒度
を得ることができる。A feature of the sliding member composition of the present invention according to claim 3 is that in claim 1 or 2, the porous carbon material has a particle size of 2 to 100 μm. And, by adopting such a configuration, without impairing the fluidity when molding the composition for a sliding member, and wear and seizure damage of the sliding portion for a long time without lubrication It is possible to obtain the most favorable particle size necessary for reliable protection.
【００１１】また、請求項４に係る本発明の摺動部材用
組成物の特徴は、請求項１ないし請求項３のいずれか１
項において、多孔性炭素材の粉末にふっ素系樹脂の溶液
を含浸させた点にある。そして、このような構成を採用
したことにより、低摩擦化をより図ることができる。The feature of the sliding member composition of the present invention according to claim 4 is any one of claims 1 to 3.
In the item, the powder of the porous carbon material is impregnated with the solution of the fluororesin. By adopting such a configuration, it is possible to further reduce friction.
【００１２】また、請求項５に係る本発明の摺動部材用
組成物の特徴は、請求項１ないし請求項３のいずれか１
項に記載の摺動部材用組成物にふっ素系樹脂の溶液を含
浸させた点にある。そして、このような構成を採用した
ことにより、低摩擦化をより図ることができる。The sliding member composition of the present invention according to claim 5 is characterized by any one of claims 1 to 3.
The point is that the composition for a sliding member according to the item is impregnated with a solution of a fluororesin. By adopting such a configuration, it is possible to further reduce friction.
【００１３】また、請求項６に係る本発明の摺動部材用
組成物の特徴は、請求項１ないし請求項５のいずれか１
項において、熱可塑性樹脂がポリアセタールである点に
ある。そして、このような構成を採用したことにより、
ポリアセタールは、金属代替樹脂としての安価な汎用エ
ンプラとして安定供給されるため、低価格化をより確実
に図ることができる。The feature of the sliding member composition of the present invention according to claim 6 is any one of claims 1 to 5.
In the item, the thermoplastic resin is a polyacetal. And by adopting such a configuration,
Since polyacetal is stably supplied as an inexpensive general-purpose engineering plastic as a metal substitute resin, it is possible to more reliably reduce the price.
【００１４】また、請求項７に係る本発明の摺動部材用
組成物の特徴は、請求項１ないし請求項６のいずれか１
項において、多孔性炭素材が、麩糠類に熱硬化性樹脂が
配合された成形物を焼成することにより形成されている
点にある。そして、このような構成を採用したことによ
り、無潤滑下における摩擦抵抗を低くすることができ
る。 For the sliding member of the present invention according to claim 7,
The composition is characterized by any one of claims 1 to 6.
In the paragraph, the porous carbon material is the bran bran and the thermosetting resin is
The point is that it is formed by firing the compounded molded product . And by adopting such a configuration, it is possible to reduce the frictional resistance in the absence of lubrication.
It
【００１５】また、請求項８に係る本発明の摺動部材の
特徴は、摺動部位に用いられる摺動部材において、少な
くとも摺動面が請求項１ないし請求項７のいずれか１項
に記載の摺動部材用組成物により形成されている点にあ
る。そして、このような構成を採用したことにより、摺
動部位の摩耗や焼付損傷を無潤滑下で長期間に亘り確実
に防止することができる。 The sliding member of the present invention according to claim 8 is
The feature is that in the sliding member used in the sliding part,
The sliding surface is at least one of claims 1 to 7.
In that it is formed of the composition for a sliding member described in
It And by adopting such a configuration,
Ensures wear and seizure damage on moving parts over a long period of time without lubrication
Can be prevented.
【００１６】[0016]
【発明の実施の形態】以下、本発明を図面に示す実施形
態により説明する。DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the embodiments shown in the drawings.
【００１７】図１は、本発明に係る摺動部材用組成物を
用いたミシン用摺動部品の実施形態の断面図である。FIG. 1 is a sectional view of an embodiment of a sliding component for a sewing machine using the composition for a sliding member according to the present invention.
【００１８】図１に示すように、本実施形態の摺動部材
としてのミシン用摺動部品１は、熱可塑性樹脂に多孔性
炭素材の粉末を含有させた摺動部材用組成物により形成
されている。このミシン用摺動部品１は、例えば厚さが
１〜２ｍｍ程度のパイプ状に形成されており、その内周
面が、他の部材２と摺接する摺動面１ａとされている。
この摺動面１ａには、曲率のある凹凸を設けてもよい。
そして、摺動面１ａに凹凸を設けると、他の部品２と摺
接する部位の接触面積を少なくすることができるととも
に、摩耗粉を凹部に逃がすことができるので、摺動特性
をより向上させることができる。As shown in FIG. 1, a sliding component 1 for a sewing machine as a sliding member of this embodiment is formed of a composition for a sliding member in which a thermoplastic resin contains a powder of a porous carbon material. ing. The sliding component 1 for a sewing machine is formed in a pipe shape having a thickness of, for example, about 1 to 2 mm, and its inner peripheral surface is a sliding surface 1 a that is in sliding contact with another member 2.
The sliding surface 1a may be provided with unevenness having a curvature.
If the sliding surface 1a is provided with irregularities, the contact area of the portion that is in sliding contact with the other component 2 can be reduced, and the abrasion powder can be released to the concave portion, so that the sliding characteristics are further improved. You can
【００１９】前記摺動部材用組成物を構成する熱可塑性
樹脂としては、ポリアセタール（ポリオキシメチレン：
ＰＯＭ）、ポリイミド（ＰＩ）、ポリアミド（ナイロ
ン：ＰＡ）、ポリアミドイミド（ＰＡＩ）、ポリエーテ
ルエーテルケトン（ＰＥＥＫ）、ポリカーボネート（Ｐ
Ｃ）、変性ポリフェニレンオキシド（ＰＰＯ）、ポリブ
チレンテレフタート（ＰＢＴ）、ポリエチレンテレフタ
ート（ＰＥＴ）、ポリスルホン（ＰＳＯ）ポリエーテル
スルホン（ＰＥＳ）、ポリフェニレンスルフィド（ＰＰ
Ｓ）、ポリアリレート、ポリエーテルイミド（ＰＥ
Ｉ）、ポリエチルエーテルケトン、熱可塑性ふっ素樹脂
などを例示できる。これらの熱可塑性樹脂のうち、ポリ
アセタール（ＰＯＭ）、ポリイミド（ＰＩ）、ポリアミ
ド（ＰＡ、ナイロン）、ポリアミドイミド（ＰＡＩ）、
ポリエーテルエーテルケトン（ＰＥＥＫ）が摺動性が優
れているという意味で好ましく、特にポリアセタール
（ＰＯＭ）が金属代替樹脂としての安価な汎用エンプラ
として安定供給されるため、価格が安価で安定供給が容
易であるとともに、射出成形による効率的な生産を行う
ことができるという意味で最も好ましい。本実施形態に
おいては、ポリアセタールが用いられている。As the thermoplastic resin constituting the composition for sliding members, polyacetal (polyoxymethylene:
POM), polyimide (PI), polyamide (nylon: PA), polyamideimide (PAI), polyetheretherketone (PEEK), polycarbonate (P
C), modified polyphenylene oxide (PPO), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polysulfone (PSO) polyether sulfone (PES), polyphenylene sulfide (PP)
S), polyarylate, polyetherimide (PE
Examples thereof include I), polyethyl ether ketone, and thermoplastic fluorine resin. Among these thermoplastic resins, polyacetal (POM), polyimide (PI), polyamide (PA, nylon), polyamide imide (PAI),
Polyetheretherketone (PEEK) is preferable because it has excellent slidability, and especially polyacetal (POM) is stably supplied as an inexpensive general-purpose engineering plastic as a metal substitute resin, so the price is low and stable supply is easy. In addition, it is most preferable in the sense that efficient production can be performed by injection molding. In this embodiment, polyacetal is used.
【００２０】前記摺動部材用組成物を構成する多孔性炭
素材は、いわゆるＲＢ（ＲｉｃｅＢｒａｎ）セラミック
スと称されるものであり、米糠に熱硬化性樹脂であるフ
ェノール樹脂を配合した原料組成物を５００℃以上の高
温で焼成することにより形成したものが一般的に用いら
れる。そして、原料組成物は、焼成により、フェノール
樹脂の炭化物により形成されるガラス状炭素成分（ガラ
ス状黒鉛）となるとともに、ガラス状炭素成分の殻に空
隙が包まれた多孔質な部位と、空隙のないガラス状炭素
成分の微細で緻密な部位とが形成される。なお、多孔性
炭素材の原料組成物としては、米糠にかえて、麩、籾
殻、大豆殻などの麩糠類を単独で用いたり、米糠、麩、
籾殻、大豆殻などの麩糠類を組み合わせたものなどを用
いることができる。また、熱硬化性樹脂としては、フラ
ン樹脂、メラミン樹脂などを用いることができる。The porous carbon material constituting the composition for the sliding member is so-called RB (RiceBran) ceramics, and a rice bran is mixed with a phenol resin which is a thermosetting resin. What was formed by baking the said raw material composition at high temperature of 500 degreeC or more is generally used. Then, the raw material composition becomes a glassy carbon component (glassy graphite) formed by a carbide of a phenol resin by firing, and a porous portion in which voids are enclosed in a shell of the glassy carbon component and voids. A fine and dense part of the glassy carbon component is formed. As the raw material composition of the porous carbon material, instead of rice bran, rice bran, rice husks, soybean husks or the like may be used alone, or rice bran, rice bran,
A combination of rice bran and soybean hulls and so on can be used. The thermosetting resin may be used furan resin, etc. melamine resins.
【００２１】本実施形態の摺動部材用組成物には、前記
多孔性炭素材を粉末としたものが用いられる。この多孔
性炭素材の粉末は、多孔性炭素材を、従来公知の粉砕機
により粉砕した後で篩を用いて分級することなどにより
容易に得ることができる。The sliding member composition of this embodiment uses a powder of the porous carbon material. The powder of the porous carbon material can be easily obtained by pulverizing the porous carbon material with a conventionally known pulverizer and then classifying it with a sieve.
【００２２】前記摺動部材用組成物における熱可塑性樹
脂と多孔性炭素材の粉末との配合量としては、多孔性炭
素材の粉末の含有量を１０〜５０重量％程度、好ましく
は３０〜５０重量％程度とし、その残りを熱可塑性樹脂
とすることがよい。As the compounding amount of the thermoplastic resin and the powder of the porous carbon material in the composition for the sliding member, the content of the powder of the porous carbon material is about 10 to 50% by weight, preferably 30 to 50%. It is preferable that the content is about wt% and the rest is a thermoplastic resin.
【００２３】言い換えると、摺動部材用組成物は、熱可
塑性樹脂に多孔性炭素材の粉末を含有させてなり、熱可
塑性樹脂および多孔性炭素材の粉末の割合がこれらの総
重量に対して、熱可塑性樹脂が５０〜９０重量％、多孔
性炭素材の粉末が１０〜５０重量％の範囲にあるとよ
い。In other words, the composition for a sliding member is made of a thermoplastic resin containing a powder of a porous carbon material, and the ratio of the powder of the thermoplastic resin to the powder of the porous carbon material is relative to the total weight thereof. The thermoplastic resin is preferably in the range of 50 to 90% by weight and the porous carbon material powder is in the range of 10 to 50% by weight.
【００２４】この範囲より多孔性炭素材の粉末の含有量
が少ないと、硬質で、無潤滑下における摩擦抵抗を低く
することができるという多孔性炭素材の機能が発揮でき
ない傾向があり、ミシン用摺動部品１としたときに、摺
動面１ａの摩擦係数の低下や、耐摩耗性の向上を図るこ
とができず、摺動部位の摩耗や、焼付損傷を無潤滑下で
長期間に亘り確実に防止することが困難になる。また、
この範囲より多孔性炭素材の粉末の含有量が多くなる
と、熱可塑性樹脂に多孔性炭素材の粉末を配合すること
が困難になる傾向があるとともに、摺動部材用組成物を
成形加工する際の成形加工に必要な流動性を確保するこ
とができない傾向がある。If the content of the powder of the porous carbon material is less than the above range, the function of the porous carbon material, which is hard and can reduce the frictional resistance under non-lubrication, tends to be unachievable. When the sliding component 1 is used, it is not possible to reduce the friction coefficient of the sliding surface 1a and improve the wear resistance, and wear of the sliding portion and seizure damage can be performed for a long time without lubrication. It is difficult to prevent it reliably. Also,
When the content of the powder of the porous carbon material is higher than this range, it tends to be difficult to mix the powder of the porous carbon material with the thermoplastic resin, and when the sliding member composition is molded and processed. There is a tendency that the fluidity required for the molding process cannot be secured.
【００２５】したがって、熱可塑性樹脂の含有量を５０
〜９０重量％とし、多孔性炭素材の粉末の含有量を１０
〜５０重量％とすることにより、摺動部材用組成物を成
形加工する際の流動性を損なうことがなく、かつ、摺動
部位の摩耗や焼付損傷を無潤滑下で長期間に亘り確実に
防止するために必要な最も好ましい含有量を得ることが
できる。Therefore, the content of the thermoplastic resin should be 50
To 90% by weight, and the content of the powder of the porous carbon material is 10
By setting the content to 50% by weight, the fluidity at the time of molding the composition for a sliding member is not impaired, and the wear and seizure damage of the sliding portion can be reliably performed for a long period of time without lubrication. The most preferable content required for prevention can be obtained.
【００２６】前記多孔性炭素材の粉末の粒度としては、
２〜１００μｍとすることが好ましい。この多孔性炭素
材の粉末の粒度が２μｍ未満になると、粉末が凝集を生
じやすくなる傾向がある。また、多孔性炭素材の粉末の
粒度が１００μｍを越えると、熱可塑性樹脂に対して多
孔性炭素材の粉末を混ぜにくくなるとともに、摺動部材
用組成物を成形加工する際の成形加工に必要な流動性を
確保することができない傾向がある。The particle size of the powder of the porous carbon material is
The thickness is preferably 2 to 100 μm. If the particle size of the powder of this porous carbon material is less than 2 μm, the powder tends to agglomerate. Further, when the particle size of the powder of the porous carbon material exceeds 100 μm, it becomes difficult to mix the powder of the porous carbon material with the thermoplastic resin, and it is necessary for the molding process when molding the composition for a sliding member. It tends to be impossible to secure sufficient liquidity.
【００２７】したがって、多孔性炭素材の粒度を２〜１
００μｍとすることにより、摺動部材用組成物を成形加
工する際の流動性を損なうことがなく、かつ、摺動部位
の摩耗や焼付損傷を無潤滑下で長期間に亘り確実に防止
するために必要な最も好ましい粒度を得ることができ
る。Therefore, the particle size of the porous carbon material is 2-1.
By setting the thickness to 00 μm, the fluidity at the time of molding the sliding member composition is not impaired, and wear and seizure damage of sliding parts are reliably prevented for a long time without lubrication. The most preferred particle size required for
【００２８】なお、多孔性炭素材の粉末には、ふっ素系
樹脂の溶液を含浸させてもよい。そして、このような構
成を採用すると、多孔性炭素材の粉末にふっ素系樹脂を
保持させることができるので、摺動部材たるミシン用摺
動部品１の低摩擦化をより図ることができる。すなわ
ち、摺動面１ａの低摩擦化を長期間に亘り保持させるこ
とができる。また、多孔性炭素材の粉末に、ふっ素系樹
脂の溶液を含浸させる場合には、減圧下で行うことが、
多孔性炭素材の粉末にふっ素系樹脂を短時間で効率よく
含浸させることができるという点で好ましい。さらに、
ふっ素系樹脂にかえて、ふっ素オイルなどの耐熱性を有
する潤滑部材を用いてもよい。このような潤滑部材の耐
熱性は、潤滑部材が製造工程における熱によって気体と
なって揮散するのを防止することができるものであれば
よい。すなわち、後述する摺動部材用組成物をペレット
にする場合、および ペレットを成形加工してミシン用
摺動部品１に成形する場合においては、摺動部材用組成
物を例えば１９０℃程度に加熱して流動化することにな
るので、この時の温度に耐えるものであることが肝要で
ある。The porous carbon material powder may be impregnated with a solution of a fluororesin. When such a configuration is adopted, the fluorocarbon resin can be retained in the powder of the porous carbon material, so that the friction of the sliding component 1 for sewing machine, which is a sliding member, can be further reduced. That is, the low friction of the sliding surface 1a can be maintained for a long period of time. Further, when impregnating the powder of the porous carbon material with the solution of the fluorine-based resin, it may be performed under reduced pressure,
It is preferable in that the powder of the porous carbon material can be efficiently impregnated with the fluorocarbon resin in a short time. further,
Instead of the fluorine-based resin, a heat-resistant lubricating member such as fluorine oil may be used. The heat resistance of such a lubricating member may be such that it can prevent the lubricating member from becoming a gas and volatilizing due to heat in the manufacturing process. That is, when the sliding member composition described below is formed into pellets, and when the pellets are molded to form the sewing machine sliding component 1, the sliding member composition is heated to, for example, about 190 ° C. Since it will be fluidized as a result, it is essential that it withstand the temperature at this time.
【００２９】また、本実施形態の摺動部材用組成物とし
ては、黒色顔料などの各種の配合材を機能に影響を及ぼ
さない範囲で加えてもよい。Further, as the sliding member composition of this embodiment, various compounding materials such as black pigments may be added within a range that does not affect the function.
【００３０】ここで、本実施形態のミシン用摺動部品１
の製造方法について説明する。Here, the sliding component 1 for the sewing machine of the present embodiment
The manufacturing method of will be described.
【００３１】本実施形態のミシン用摺動部品１は、熱可
塑性樹脂としてのポリアセタールに多孔性炭素材の粉末
を含有させてなる摺動部材用組成物のペレットを材料と
し、この材料を成形加工することにより製造される。The sewing machine sliding component 1 of the present embodiment is made of pellets of a sliding member composition which is made of polyacetal as a thermoplastic resin containing a powder of a porous carbon material, and this material is molded and processed. It is manufactured by
【００３２】前記ペレットは、例えば、２軸押出機を用
いて、熱可塑性樹脂としてのポリアセタールと、多孔性
炭素材の粉末とを、１８０℃程度の温度下で、ポリアセ
タールを流動化して混合し、その後冷却することで、例
えば直径２ｍｍ程度の棒状の成形品を成形する。つい
で、切断機を用いて、棒状の成形品の先端部を、例えば
長さ２ｍｍ程度に連続的に切断することにより容易に得
ることができる。For the pellets, for example, a polyacetal as a thermoplastic resin and a powder of a porous carbon material are fluidized and mixed at a temperature of about 180 ° C. using a twin-screw extruder, Then, by cooling, a rod-shaped molded product having a diameter of about 2 mm is molded. Then, by using a cutting machine, the tip of the rod-shaped molded product can be easily obtained, for example, by continuously cutting it into a length of about 2 mm.
【００３３】前記ミシン用摺動部品１は、射出成型機を
用いて、前記ペレットを１９０℃程度の温度化で流動化
し、この流動化した材料を成形金型のキャビティに射出
し、キャビティ内で流動化した材料を固化する成形加工
を施した後、固化した材料を成形金型から離型すること
により、容易かつ効率的に得ることができる。また、ミ
シン用摺動部品１の形状と寸法は、成形金型のキャビテ
ィの形状と寸法によって決定される。In the sliding part 1 for the sewing machine, an injection molding machine is used to fluidize the pellets at a temperature of about 190 ° C., the fluidized material is injected into the cavity of the molding die, and the fluid is injected into the cavity. By subjecting the fluidized material to a molding process for solidifying, and then releasing the solidified material from the molding die, it is possible to obtain easily and efficiently. The shape and size of the sliding component 1 for sewing machine are determined by the shape and size of the cavity of the molding die.
【００３４】したがって、摺動部材用組成物を流動化し
て成形加工するという簡単な工程で、摺動部材としての
ミシン用摺動部品１を任意の形状にて容易かつ効率的に
得ることができる。Therefore, the sliding component 1 for a sewing machine as a sliding member can be easily and efficiently obtained in any shape by a simple process of fluidizing and molding the sliding member composition. .
【００３５】また、完成したミシン用摺動部品１に対し
て、ふっ素系樹脂の溶液を含浸させてもよい。そして、
このような構成を採用すると、摺動面１ａに露出してい
る多孔質な部位４に、ふっ素系樹脂を保持させることが
できるので、摺動部材たるミシン用摺動部品１の摺動面
１ａの低摩擦化をより図ることができる。すなわち、摺
動面１ａの低摩擦化を長期間に亘り保持させることがで
きる。また、ミシン用摺動部品１に、ふっ素系樹脂の溶
液を含浸させる場合には、減圧下で行うことが、摺動面
１ａに露出している多孔性炭素材の粉末の多孔質な部位
４にふっ素系樹脂を短時間で効率よく含浸させることが
できるという点で好ましい。Further, the completed sliding part 1 for a sewing machine may be impregnated with a solution of a fluororesin. And
By adopting such a configuration, since the fluororesin can be held in the porous portion 4 exposed on the sliding surface 1a, the sliding surface 1a of the sliding component 1 for sewing machine, which is a sliding member, can be held. It is possible to further reduce the friction. That is, the low friction of the sliding surface 1a can be maintained for a long period of time. When the sliding component 1 for sewing machine is impregnated with the solution of the fluorine-based resin, it should be performed under reduced pressure to form the porous portion 4 of the powder of the porous carbon material exposed on the sliding surface 1a. It is preferable in that the fluororesin can be efficiently impregnated in a short time.
【００３６】なお、ふっ素系樹脂にかえて、ふっ素オイ
ルなどの各種の潤滑油、グリースなどの潤滑部材を用い
てもよい。Instead of the fluorine-based resin, various lubricating oils such as fluorine oil and lubricating members such as grease may be used.
【００３７】つぎに、前述した構成からなる本実施形態
の作用について説明する。Next, the operation of this embodiment having the above-described structure will be described.
【００３８】図２は、本発明に係る摺動部材用組成物を
用いたミシン用摺動部品の実施形態における摺動面近傍
の構造を示す模式図である。FIG. 2 is a schematic view showing a structure in the vicinity of a sliding surface in an embodiment of a sliding component for a sewing machine using the composition for a sliding member according to the present invention.
【００３９】図２に示すように、本実施形態のミシン用
摺動部品１は、ポリアセタールの樹脂３中に、最大１０
０μｍに形成されたガラス状黒鉛の比較的大きな多孔質
な部位４と、最小２μｍに形成されたガラス状黒鉛の微
細で緻密な部位５とが分散する構造となり、これらの部
位４，５の一部が摺動面１ａに露出する構成となる。す
なわち、摺動面１ａが、ポリアセタールの樹脂３と、こ
のポリアセタールの樹脂３中に分散したガラス状黒鉛の
多孔質な部位４、および、ガラス状黒鉛により形成され
た微細で緻密な部位５で構成されることになる。As shown in FIG. 2, the sliding component 1 for a sewing machine of this embodiment has a maximum of 10 parts in the polyacetal resin 3.
A relatively large porous portion 4 of glassy graphite formed to 0 μm and a fine and dense portion 5 of glassy graphite formed to a minimum of 2 μm are dispersed, and one of these portions 4 and 5 is formed. The part is exposed to the sliding surface 1a. That is, the sliding surface 1a is, the resin 3 of the polyacetal, porous sites glassy graphite dispersed in the resin 3 of the polyacetal 4 and composed of dense site 5 fine formed by glassy graphite Will be done.
【００４０】したがって、本実施形態のミシン用摺動部
品１の少なくとも摺動面１ａは、ポリアセタールの有す
る引張り強度や曲げ強度などの優れた機械的強度と、ポ
リアセタールの有する優れたすべり摩耗と、多孔性炭素
材の有する硬質なことによる優れた耐摩耗性および自己
潤滑性による低い摩擦係数とを合わせ持つ構成となる。Therefore, at least the sliding surface 1a of the sliding component 1 for sewing machine of this embodiment has excellent mechanical strength such as tensile strength and bending strength of polyacetal, excellent sliding wear of polyacetal, and porosity. The structure has both excellent wear resistance due to the hardness of the conductive carbon material and a low friction coefficient due to self-lubricating property.
【００４１】このように、本実施形態の摺動部材用組成
物によれば、摺動部材として必要な、低い摩擦係数、お
よび荷重変動に対する摩擦係数の変動を小さくする機能
と、金属代替樹脂としての優れた機械的強度を合わせ持
たせることができるため、摺動部位の摩耗や焼付損傷を
無潤滑下で長期間に亘り確実に防止することができる。As described above, according to the composition for a sliding member of the present embodiment, the sliding member has a low coefficient of friction and a function of reducing the fluctuation of the coefficient of friction with respect to a load fluctuation, and as a metal substitute resin. Since excellent mechanical strength can be provided together, wear and seizure damage of sliding parts can be reliably prevented for a long period of time without lubrication.
【００４２】また、本実施形態の摺動部材用組成物によ
れば、ポリアセタールに多孔性炭素材の粉末を含有させ
た摺動部材用組成物をペレットとし、このペレットを射
出成形することにより摺動部材としてのミシン用摺動部
品１を形成することができるため、成形後に寸法変化を
生じない。よって、後加工を施す必要がないので加工に
要する労力と時間とを少なくできるので、生産性に優
れ、かつ、低価格化を容易に図ることができる。Further, according to the composition for a sliding member of the present embodiment, the composition for a sliding member in which the powder of the porous carbon material is contained in the polyacetal is made into pellets, and the pellets are injection-molded to make a sliding member. Since the sewing machine sliding component 1 as the moving member can be formed, dimensional change does not occur after molding. Therefore, since it is not necessary to carry out post-processing, the labor and time required for processing can be reduced, so that the productivity is excellent and the cost can be easily reduced.
【００４３】またさらに、本実施形態の摺動部材用組成
物によれば、ポリアセタールに多孔性炭素材の粉末を含
有させて形成されているため、成形加工時に、流動化で
きるので、任意の形状のものを容易に得ることができ
る。さらには、成形後の製品を再加熱することにより再
度流動化することができるので、ミシン用摺動部品１の
材料として再利用をすることが容易にできる。すなわ
ち、リサイクルを容易にできる。Furthermore, according to the composition for a sliding member of the present embodiment, since it is formed by containing the powder of the porous carbon material in the polyacetal, it can be fluidized at the time of molding process, so that it has an arbitrary shape. Can be easily obtained. Furthermore, since the molded product can be re-fluidized by being reheated, it can be easily reused as a material for the sewing machine sliding component 1. That is, recycling can be facilitated.
【００４４】さらに、本実施形態の摺動部材用組成物に
よれば、摺動部材用組成物の一部を構成する熱可塑性樹
脂としてポリアセタールを用いており、ポリアセタール
は、金属代替樹脂としての安価な汎用エンプラとして安
定供給されるため、低価格化をより確実に図ることがで
きる。Further, according to the composition for a sliding member of the present embodiment, polyacetal is used as the thermoplastic resin which constitutes a part of the composition for a sliding member, and polyacetal is inexpensive as a metal substitute resin. Since it is stably supplied as a general-purpose engineering plastic, the price can be reduced more reliably.
【００４５】さらにまた、本実施形態の摺動部材用組成
物によれば、摺動部材用組成物の一部を構成する多孔性
炭素材の粉末がガラス状炭素（黒鉛）により形成されて
いるため、摺動部材用組成物により形成された摺動部材
としてのミシン用摺動部品１の全体の熱伝導率を高くす
ることができる。そして、ミシン用摺動部品１の熱伝導
率を高くすることにより、摺動時におけるミシン用摺動
部品１の発熱および蓄熱を少なくすることができる。つ
まり、樹脂の弱点である熱伝導率の悪さを容易に改善す
ることができる。Furthermore, according to the composition for a sliding member of the present embodiment, the powder of the porous carbon material forming a part of the composition for a sliding member is formed of glassy carbon (graphite). Therefore, the thermal conductivity of the entire sliding component 1 for a sewing machine, which is a sliding member formed of the sliding member composition, can be increased. By increasing the thermal conductivity of the sewing machine sliding component 1, heat generation and heat storage of the sewing machine sliding component 1 during sliding can be reduced. That is, it is possible to easily improve the poor thermal conductivity, which is a weak point of the resin.
【００４６】また、本実施形態の摺動部材用組成物を用
いた摺動部材の曲げ強度と多孔性炭素材の粉末の含有量
（配合量）との関係について調査した結果を図３に示
す。Further, FIG. 3 shows the result of investigation on the relationship between the bending strength of the sliding member using the sliding member composition of the present embodiment and the content (compounding amount) of the powder of the porous carbon material. .
【００４７】この試験結果から明白なように、本実施形
態の摺動部材用組成物を用いた摺動部材は、多孔性炭素
材の粉末の含有量が多くなると曲げ強度が低下する傾向
があるとともに、多孔性炭素材の粉末の含有量が３０〜
５０重量％の範囲においては曲げ強度がほぼ同一水準に
なることが確認できた。この曲げ強度は、実用上問題の
ない水準である。As is clear from the results of this test, the sliding member using the sliding member composition of the present embodiment tends to have a lower bending strength as the content of the powder of the porous carbon material increases. In addition, the content of the porous carbon material powder is 30 to
It was confirmed that the bending strength was almost the same level in the range of 50% by weight. This bending strength is at a level with no practical problems.
【００４８】さらに、本実施形態の摺動部材用組成物を
用いた摺動部材の摩擦係数と荷重と多孔性炭素材の粉末
の含有量（配合量）との関係について調査した結果を図
４に示す。なお、図４中に、摺動部材に対してあとから
ふっ素系樹脂の溶液を含浸させたものを合わせて示す。
なお、試験装置としては、ジャーナル軸受型摩耗試験機
を用いた。Further, the result of investigation on the relationship between the friction coefficient and the load of the sliding member using the sliding member composition of this embodiment and the content (compounding amount) of the powder of the porous carbon material is shown in FIG. Shown in. Note that FIG. 4 also shows a sliding member which is later impregnated with a solution of a fluororesin.
A journal bearing type abrasion tester was used as the test device.
【００４９】この試験結果から明白なように、本実施形
態の摺動部材用組成物を用いた摺動部材は、多孔性炭素
材の粉末の含有量を増加させることにより、摩擦係数が
低下するとともに、荷重に対する摩擦係数の変動が小さ
くなることが確認できた。そして、多孔性炭素材の粉末
の含有量を３０〜５０重量％とすることにより、荷重に
対する摩擦係数の変動を最も少ない範囲にできるととも
に、摩擦係数を０．２以下にすることができる。つま
り、摩擦係数を容易に下げることができる。なお、ふっ
素系樹脂の溶液を含浸させた場合には、低荷重領域にお
ける荷重に対する摩擦係数の変動をより少なくすること
ができることが確認できた。As is clear from the test results, the sliding member using the sliding member composition of the present embodiment has a reduced friction coefficient as the content of the powder of the porous carbon material is increased. At the same time, it was confirmed that the variation of the friction coefficient with respect to the load was reduced. By setting the content of the powder of the porous carbon material to 30 to 50% by weight, the fluctuation of the friction coefficient with respect to the load can be minimized and the friction coefficient can be 0.2 or less. That is, the coefficient of friction can be easily reduced. It has been confirmed that when the solution of the fluororesin is impregnated, it is possible to further reduce the fluctuation of the friction coefficient with respect to the load in the low load region.
【００５０】さらにまた、本実施形態の摺動部材用組成
物を用いた摺動部材の発熱温度と多孔性炭素材の粉末の
含有量との関係について、荷重を３９Ｎとして調査した
結果を図５に示す。なお、図５の縦軸に示す発熱温度と
は、計測した温度から室温を減算した変化温度を示して
いる。Furthermore, the relationship between the heat generation temperature of the sliding member using the sliding member composition of this embodiment and the content of the powder of the porous carbonaceous material was investigated at a load of 39 N, and the results are shown in FIG. Shown in. The exothermic temperature shown on the vertical axis in FIG. 5 indicates a change temperature obtained by subtracting room temperature from the measured temperature.
【００５１】この試験結果から明白なように、本実施形
態の摺動部材用組成物を用いた摺動部材は、多孔性炭素
材の粉末の含有量を増加させることにより、発熱温度が
低下することが確認できた。As is clear from the test results, the sliding member using the sliding member composition of this embodiment has a lower heat generation temperature due to an increase in the content of the powder of the porous carbon material. I was able to confirm that.
【００５２】したがって、本実施形態の摺動部材用組成
物を用いた摺動部材としてのミシン用摺動部品１によれ
ば、摺動部位の摩耗や焼付損傷を無潤滑下で長期間に亘
り確実に防止することができるとともに、生産性に優
れ、かつ、低価格化を容易に図ることができる。Therefore, according to the sliding part 1 for a sewing machine as a sliding member using the composition for a sliding member of the present embodiment, wear and seizure damage of the sliding portion can be maintained for a long period of time without lubrication. This can be surely prevented, and the productivity can be improved and the price can be easily reduced.
【００５３】なお、本発明の摺動部材用組成物を用いた
ミシン用摺動部品の構成としては、摺動部材用組成物の
みにより構成したものに限らず、金属あるいは樹脂によ
り所定形状に形成された基体の少なくとも摺動面を摺動
部材用組成物により被覆して一体化した構成のものや、
金属あるいは樹脂により所定形状に形成された基体の摺
動面に、所定形状に形成された摺動部材用組成物を接
合、嵌合、締結などにより一体化した構成のものなどの
多種多様の構成のものから、設計コンセプト、使用部位
などの必要に応じて選択することができる。The construction of the sliding parts for sewing machine using the composition for sliding members of the present invention is not limited to the composition made of only the composition for sliding members, and is formed in a predetermined shape from metal or resin. And a structure in which at least the sliding surface of the substrate is coated with the composition for a sliding member to be integrated,
A wide variety of configurations, such as a configuration in which a sliding member composition formed in a predetermined shape is integrated by joining, fitting, fastening, etc. to a sliding surface of a base body formed in a predetermined shape by metal or resin It can be selected from the ones according to the needs such as the design concept and the use part.
【００５４】また、本発明の摺動部材用組成物を用いた
ミシン用摺動部品の成形方法としては、射出成形に限ら
ず、押出し成形、圧縮成形、ブロー成形、注型、粉末成
形などの多種多様のものから設計コンセプトなどの必要
に応じて選択使用することができる。そして、基体と一
体形成する方法としては、インサート成形、コーティン
グなどの製造方法を用いることができる。The method for molding sliding parts for sewing machines using the composition for sliding members of the present invention is not limited to injection molding, but extrusion molding, compression molding, blow molding, casting, powder molding and the like. It can be selected and used from a wide variety of things according to the needs such as the design concept. Then, as a method of integrally forming with the substrate, a manufacturing method such as insert molding or coating can be used.
【００５５】さらに、本発明に係る摺動部材用組成物を
用いたミシン用摺動部品としては、針棒や押え棒などの
往復軸、この往復軸を支持する軸受メタル、上ルーパ抱
き、この上ルーパ抱きを支持する上ルーパ抱きメタル、
角駒、この角駒を支持する角駒案内ガイドの案内溝、回
転運動を行う上軸・下軸・針振り軸・縦軸などの回転
軸、これらの回転軸を支持する軸受メタル、揺動運動を
行う天秤支え軸・針棒揺動軸・針送り軸などの揺動軸、
これらの揺動軸を支持する軸受メタル、作動送り機構の
送りカム、ルーパ糸天秤などの多種多様のミシンの摺動
部位の部品に適用することができる。Further, as a sliding component for a sewing machine using the composition for a sliding member according to the present invention, a reciprocating shaft such as a needle bar or a pressing rod, a bearing metal supporting the reciprocating shaft, an upper looper hug, Upper looper hugging metal that supports the upper looper hug,
Square piece, guide groove of square piece guide guide that supports this square piece, rotary shafts such as upper shaft, lower shaft, needle swing shaft, vertical axis that perform rotary motion, bearing metal that supports these rotary shafts, rocking Swing shafts such as balance support shaft, needle bar swing shaft, needle feed shaft, etc.
It can be applied to a sliding metal part of a wide variety of sewing machines such as a bearing metal that supports these swing shafts, a feed cam of an actuating feed mechanism, and a looper thread balance.
【００５６】なお、本発明の摺動部材用組成物を用いた
ミシン用摺動部品を、ミシンの針棒を支持する軸受メタ
ルに用いた場合には、針棒とこのを針棒を支持する軸受
メタルとの摺動部位を無潤滑化することができるので、
ミシンの面部内に位置する摺動部位に低粘度の潤滑油を
供給する場合の摺動部からの潤滑材の漏洩による縫製物
の汚染を防止することができるなどの効果を奏する。When the sliding component for a sewing machine using the composition for a sliding member of the present invention is used as a bearing metal for supporting the needle bar of a sewing machine, the needle bar and this support the needle bar. Since it is possible to lubricate the sliding parts with the bearing metal,
When supplying a low-viscosity lubricating oil to the sliding portion located in the surface portion of the sewing machine, it is possible to prevent contamination of the sewn product due to leakage of the lubricant from the sliding portion.
【００５７】さらに、本発明の摺動部材用組成物を用い
たミシン用摺動部品を、ミシンの針棒に用いた場合に
は、針棒の軽量化を図ることができるので、針棒の制振
性を向上させることができるなどの効果を奏する。Furthermore, when the sliding component for a sewing machine using the composition for a sliding member of the present invention is used for a needle bar of a sewing machine, the weight of the needle bar can be reduced, so that This has the effect of improving the vibration damping property.
【００５８】なお、本発明は、前記実施形態に限定され
るものではなく、必要に応じて種々変更することができ
る。例えば、本発明のミシン用摺動部品を従来の給油機
構を備えたミシンに用いてもよい。The present invention is not limited to the above embodiment, but can be variously modified as necessary. For example, the sliding part for a sewing machine of the present invention may be used in a sewing machine having a conventional oil supply mechanism.
【００５９】[0059]
【発明の効果】以上説明したように請求項１に係る本発
明の摺動部材用組成物によれば、摺動部材用組成物を成
形加工すると、摺動部位の摩耗や焼付損傷を無潤滑下で
長期間に亘り確実に防止することのできる摺動部材を、
任意の形状にて容易に得ることができる。したがって、
生産性に優れ、かつ、低価格化な多孔性炭素材を用いた
摺動部材を容易に得ることができなどの極めて優れた効
果を奏する。As described above, according to the composition for a sliding member of the present invention according to claim 1, when the composition for a sliding member is formed and processed, the sliding portion is free from wear and seizure damage. A sliding member that can be reliably prevented under
It can be easily obtained in any shape. Therefore,
The sliding member using the porous carbon material, which is excellent in productivity and is low in cost, can be easily obtained, which is extremely effective.
【００６０】また、請求項２に係る本発明の摺動部材用
組成物によれば、摺動部材用組成物を成形加工する際の
流動性を損なうことがなく、かつ、摺動部位の摩耗や焼
付損傷を無潤滑下で長期間に亘り確実に防止するために
必要な最も好ましい含有量を得ることができるなどの極
めて優れた効果を奏する。Further, according to the composition for a sliding member of the present invention according to claim 2, the fluidity at the time of molding the composition for a sliding member is not impaired, and the sliding portion is worn. It has an extremely excellent effect such that the most preferable content necessary for surely preventing seizure damage for a long period of time without lubrication can be obtained.
【００６１】また、請求項３に係る本発明の摺動部材用
組成物によれば、摺動部材用組成物を成形加工する際の
流動性を損なうことがなく、かつ、摺動部位の摩耗や焼
付損傷を無潤滑下で長期間に亘り確実に防止するために
必要な最も好ましい粒度を得ることができるなどの極め
て優れた効果を奏する。Further, according to the composition for a sliding member of the present invention according to claim 3, the fluidity at the time of molding the composition for a sliding member is not impaired, and the sliding portion is worn. It has an extremely excellent effect such that the most preferable grain size necessary for surely preventing seizure damage for a long period of time without lubrication can be obtained.
【００６２】また、請求項４に係る本発明の摺動部材用
組成物によれば、低摩擦化をより図ることができるなど
の極めて優れた効果を奏する。Further, according to the composition for a sliding member of the present invention as defined in claim 4, it is possible to obtain an extremely excellent effect such as further reduction of friction.
【００６３】また、請求項５に係る本発明の摺動部材用
組成物によれば、低摩擦化をより図ることができるなど
の極めて優れた効果を奏する。Further, according to the composition for a sliding member of the present invention according to claim 5, an extremely excellent effect such as a reduction in friction can be achieved.
【００６４】また、請求項６に係る本発明の摺動部材用
組成物によれば、ポリアセタールは、金属代替樹脂とし
ての安価な汎用エンプラとして安定供給されるため、低
価格化をより確実に図ることができるなどの極めて優れ
た効果を奏する。According to the composition for a sliding member of the present invention according to claim 6, polyacetal is stably supplied as an inexpensive general-purpose engineering plastic as a metal substitute resin, so that the cost can be reduced more reliably. It is possible to achieve an extremely excellent effect.
【００６５】また、請求項７に係る本発明の摺動部材用
組成物によれば、無潤滑下における摩擦抵抗を低くする
ことができるなどの極めて優れた効果を奏する。 For the sliding member of the present invention according to claim 7,
According to the composition, it reduces the frictional resistance without lubrication.
It is possible to achieve an extremely excellent effect.
【００６６】また、請求項８に係る本発明の摺動部材に
よれば、摺動部位の摩耗や焼付損傷を無潤滑下で長期間
に亘り確実に防止することができるなどの極めて優れた
効果を奏する。 Further, the sliding member of the present invention according to claim 8 is
According to this, wear and seizure damage on sliding parts can be prevented for a long time without lubrication.
It is extremely excellent in that it can be reliably prevented over
Produce an effect.
【図１】 本発明に係る摺動部材用組成物を用いたミシ
ン用摺動部品の実施形態の断面図FIG. 1 is a cross-sectional view of an embodiment of a sliding component for a sewing machine using a composition for a sliding member according to the present invention.
【図２】 本発明に係る摺動部材用組成物を用いたミシ
ン用摺動部品の実施形態における摺動面近傍の構造を示
す模式図FIG. 2 is a schematic diagram showing a structure in the vicinity of a sliding surface in an embodiment of a sliding component for sewing machine using the composition for a sliding member according to the present invention.
【図３】 本発明に係る摺動部材用組成物を用いた摺動
部材の曲げ強度と多孔性炭素材の粉末の含有量との関係
を示す図FIG. 3 is a diagram showing a relationship between a bending strength of a sliding member using the composition for a sliding member according to the present invention and a content of powder of a porous carbon material.
【図４】 本発明に係る摺動部材用組成物を用いた摺動
部材の摩擦係数と荷重と多孔性炭素材の粉末の含有量と
の関係を示す線図FIG. 4 is a diagram showing a relationship between a friction coefficient of a sliding member using the composition for a sliding member according to the present invention, a load, and a content of powder of a porous carbon material.
【図５】 本発明に係る摺動部材用組成物を用いた摺動
部材の発熱温度と多孔性炭素材の粉末の含有量との関係
を示す図FIG. 5 is a diagram showing the relationship between the heat generation temperature of a sliding member using the composition for a sliding member according to the present invention and the content of powder of a porous carbon material.
１ ミシン用摺動部品 １ａ 摺動面 ２ 他の部品 ３ ポリアセタールの樹脂 ４ （多孔性炭素材の粉末のうちの多孔質な）部位 ５ （多孔性炭素材の粉末のうちの微細で緻密な）部位 1 Sliding parts for sewing machines 1a Sliding surface 2 Other parts 3 Polyacetal resin 4 (Porous of powder of porous carbon material) 5 (fine and dense part of powder of porous carbon material)
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C08L 1/00 - 101/16 C08K 3/00 - 13/08 F16C 33/20 ─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) C08L 1/00-101/16 C08K 3/00-13/08 F16C 33/20
Claims (8)
有させてなることを特徴とする摺動部材用組成物。1. A composition for a sliding member, which comprises a thermoplastic resin and powder of a porous carbon material.
重量％であり、前記多孔性炭素材の粉末の含有量が１０
〜５０重量％であることを特徴とする請求項１に記載の
摺動部材用組成物。2. The content of the thermoplastic resin is 50 to 90.
% By weight, and the content of the powder of the porous carbon material is 10
The composition for a sliding member according to claim 1, wherein the composition is about 50% by weight.
００μｍであることを特徴とする請求項１または請求項
２に記載の摺動部材用組成物。3. The particle size of the powder of the porous carbon material is 2 to 1
It is 00 micrometers, The composition for sliding members of Claim 1 or Claim 2 characterized by the above-mentioned.
の溶液を含浸させたことを特徴とする請求項１ないし請
求項３のいずれか１項に記載の摺動部材用組成物。4. The composition for a sliding member according to claim 1, wherein the powder of the porous carbon material is impregnated with a solution of a fluorine-based resin.
に記載の摺動部材用組成物にふっ素系樹脂の溶液を含浸
させたことを特徴とする摺動部材用組成物。5. A composition for a sliding member, wherein the composition for a sliding member according to claim 1 is impregnated with a solution of a fluororesin.
ることを特徴とする請求項１ないし請求項５のいずれか
１項に記載の摺動部材用組成物。6. The composition for a sliding member according to claim 1, wherein the thermoplastic resin is polyacetal.
樹脂が配合された成形物を焼成することにより形成され
ていることを特徴とする請求項１ないし請求項６のいず
れか１項に記載の摺動部材用組成物。 7. The porous carbon material is thermosetting to rice bran.
Formed by firing a molded product containing resin
Any one of claims 1 to 6 characterized in that
The composition for a sliding member according to item 1.
て、少なくとも摺動面が請求項１ないし請求項７のいず
れか１項に記載の摺動部材用組成物により形成されてい
ることを特徴とする摺動部材。 8. A sliding member used for a sliding portion.
And at least the sliding surface is one of claims 1 to 7.
Formed by the composition for a sliding member according to item 1
A sliding member characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000216859A JP3403153B2 (en) | 2000-07-18 | 2000-07-18 | Composition for sliding member and sliding member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000216859A JP3403153B2 (en) | 2000-07-18 | 2000-07-18 | Composition for sliding member and sliding member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002030222A JP2002030222A (en) | 2002-01-31 |
| JP3403153B2 true JP3403153B2 (en) | 2003-05-06 |
Family
ID=18712051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000216859A Expired - Lifetime JP3403153B2 (en) | 2000-07-18 | 2000-07-18 | Composition for sliding member and sliding member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3403153B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002105306A (en) * | 2000-10-04 | 2002-04-10 | Sumitomo Bakelite Co Ltd | Polyether aromatic ketone resin composition and film and sheet |
| JP2002293665A (en) * | 2001-04-02 | 2002-10-09 | Juki Corp | Oil-impregnated hard porous carbon materials and machine parts and parts for sewing machines |
| JP2004113435A (en) * | 2002-09-26 | 2004-04-15 | Brother Ind Ltd | sewing machine |
| JP3422994B1 (en) * | 2002-10-17 | 2003-07-07 | ジューキ株式会社 | Lubricants, sliding members and solid lubricants |
| JP4374873B2 (en) | 2003-03-10 | 2009-12-02 | セイコーエプソン株式会社 | Printer |
| CN106438665A (en) * | 2016-11-15 | 2017-02-22 | 珠海市静润轴承科技有限公司 | Self-lubricating high-precision composite shaft, manufacturing method, shield pump, motor and fan |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000256652A (en) | 1999-03-10 | 2000-09-19 | Akebono Brake Ind Co Ltd | Dry friction material |
| JP2001178978A (en) | 1999-12-24 | 2001-07-03 | Juki Corp | sewing machine |
-
2000
- 2000-07-18 JP JP2000216859A patent/JP3403153B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000256652A (en) | 1999-03-10 | 2000-09-19 | Akebono Brake Ind Co Ltd | Dry friction material |
| JP2001178978A (en) | 1999-12-24 | 2001-07-03 | Juki Corp | sewing machine |
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| Publication number | Publication date |
|---|---|
| JP2002030222A (en) | 2002-01-31 |
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