JPH05280617A - Resin gear - Google Patents
Resin gearInfo
- Publication number
- JPH05280617A JPH05280617A JP4076495A JP7649592A JPH05280617A JP H05280617 A JPH05280617 A JP H05280617A JP 4076495 A JP4076495 A JP 4076495A JP 7649592 A JP7649592 A JP 7649592A JP H05280617 A JPH05280617 A JP H05280617A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- gear
- mat
- mold
- preform
- 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.)
- Pending
Links
Landscapes
- Gears, Cams (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、全体を樹脂で又は一
部に金属を有する樹脂歯車に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin gear having a resin as a whole or a metal as a part.
【0002】[0002]
【従来の技術】繊維が樹脂で結合されたSMCをテ−プ
状に形成してなる予備成形体を固定部材のピンに巻き付
けてリング成形体を成形する手段が、特開昭63−15
8354号で開示されている。2. Description of the Related Art A means for forming a ring-formed body by winding a preformed body formed by tape-forming SMC in which fibers are bonded with a resin to form a ring-formed body is disclosed in JP-A-63-15.
No. 8354.
【0003】[0003]
【この発明が解決しようとする課題】しかしながら、前
記手段ではプリフォ−ムを成形するのに非常に工数を要
し、樹脂系歯車の生産性を向上することが出来ない。However, with the above means, it takes a lot of man-hours to mold the preform, and the productivity of the resin gear cannot be improved.
【0004】[0004]
【課題を解決するための手段】この発明は、生産性の高
い樹脂歯車を提供するものであって、つぎの技術的手段
を講じた。すなわち、強化繊維と熱可塑性樹脂とを混合
してマット1を形成し、該マット1を歯形状にすると共
に所定の歯数分に切断してプリフォ−ム2を設け、該プ
リフォ−ム2を歯車金型3に装填すると共にプリフォ−
ム2で囲まれた空間部に樹脂4を供給し、該樹脂4を加
熱圧縮成形し、また空間部の中央部に金属性のボス5を
設けてなる樹脂歯車とした。The present invention provides a resin gear having high productivity, and has taken the following technical means. That is, a reinforcing fiber and a thermoplastic resin are mixed to form a mat 1, the mat 1 is formed into a tooth shape, and the preform 2 is provided by cutting into a predetermined number of teeth, and the preform 2 is formed. It is loaded into the gear mold 3 and the pre-former
The resin 4 is supplied to the space surrounded by the frame 2, the resin 4 is heat-compression-molded, and a metallic boss 5 is provided at the center of the space to obtain a resin gear.
【0005】[0005]
【作用】強化繊維と熱可塑性樹脂を混合して所定幅のマ
ット1を形成する。つぎに、このマット1を一方向に移
動させ、そしてこの移動途中で歯型成形手段で歯形状の
プリフォ−ム2に成形する。そして、このプリフォ−ム
2を所望する長さ(歯数分)に切断してこれを歯車金型
3に装填する。つづいて、プリフォ−ム2で囲まれた空
間部に樹脂4を供給すると共に該樹脂4を金型3で加熱
圧縮して樹脂歯車を成形する。また、プリフォ−ム2で
囲まれた空間部の中央部に金属性のボス5を設け、ボス
5とプリフォ−ム2とで囲まれた空間部に所定量の樹脂
4を供給し、そして歯車金型3でこの樹脂4を加熱圧縮
して樹脂歯車を成形する。The reinforcing fiber and the thermoplastic resin are mixed to form the mat 1 having a predetermined width. Next, the mat 1 is moved in one direction, and during this movement, the preform 2 having a tooth shape is formed by the tooth-shape forming means. Then, this preform 2 is cut into a desired length (corresponding to the number of teeth), and this is loaded into the gear mold 3. Subsequently, the resin 4 is supplied to the space surrounded by the preform 2 and the resin 4 is heated and compressed by the mold 3 to form the resin gear. Further, a metallic boss 5 is provided at the center of the space surrounded by the preform 2, a predetermined amount of resin 4 is supplied to the space surrounded by the boss 5 and the preform 2, and the gear The resin 4 is heated and compressed by the mold 3 to form a resin gear.
【0006】[0006]
【効果】プリフォ−ム2の成形が簡単であるので樹脂歯
車の生産性を高め得る。また、マット1は樹脂の浸透性
が良いので強化繊維との密着性が高まり歯の曲げ強度を
向上することが出来る。[Effect] Since the preform 2 can be easily molded, the productivity of resin gears can be improved. Further, since the mat 1 has a good resin permeability, the adhesion with the reinforcing fibers is enhanced and the bending strength of the teeth can be improved.
【0007】[0007]
【実施例】以下、この発明の実施例を図面に基づいて説
明する。まず、その構成について説明すると、マット1
はガラス繊維、炭素繊維等の連続繊維である強化繊維を
若干の熱可塑性樹脂でバインドしたコンティニアススト
ランドマット(以下CSMと呼ぶ)を用いている。な
お、該CSMとしてはベトロテクス社の「ユニフロ−マ
ット」、旭硝子ファイバ−社の「グラスロン」等の熱可
塑バインダ−等がある。Embodiments of the present invention will be described below with reference to the drawings. First, the structure will be described. The mat 1
Uses a continuous strand mat (hereinafter referred to as CSM) in which reinforcing fibers, which are continuous fibers such as glass fibers and carbon fibers, are bound with some thermoplastic resin. As the CSM, there are thermoplastic binders such as "Uniflo-mat" manufactured by Betrotex Co., Ltd. and "Glaslon" manufactured by Asahi Glass Fiber Co., Ltd.
【0008】赤外線ヒ−タ6は前記マット1を挾んで対
向して設けており、このマット1を摂氏約120度で加
熱する。そして、該赤外線ヒ−タ6の横側方には外周部
に歯形を有し回転可能に設けた歯形ロ−ル7とシリコ−
ン材(実施例では高温下でも強度を有するダウコ−ニン
グ社の付加型シリコ−ンを使用)で円筒状に形成したシ
リコ−ンロ−ル8とを有する歯形成形手段9を設けてい
る。なお、歯形ロ−ル7とシリコ−ンロ−ル8は、回転
時に一部の歯形がシリコ−ンロ−ル8に食い込むように
配置している。従って、マット1はこの歯形成形手段9
を通過中に所定の歯形が成形される。Infrared heaters 6 are provided opposite to each other with the mat 1 sandwiched therebetween, and the mat 1 is heated at about 120 degrees Celsius. The infrared heater 6 has a tooth profile on the lateral side thereof and has a tooth profile on the outer periphery thereof, and the tooth profile roll 7 and the silicone roller are rotatably provided.
There is provided a tooth forming means 9 having a cylindrical roll 8 formed of a carbon material (in the embodiment, an addition type silicone manufactured by Dow Corning which has strength even at high temperature) is formed into a cylindrical shape. The tooth profile roll 7 and the silicone roll 8 are arranged such that a part of the tooth profile bites into the silicone roll 8 during rotation. Therefore, the mat 1 has this tooth forming means 9
A predetermined tooth profile is formed during the passage.
【0009】プリフォ−ム2は前記歯形を有するマット
1を所定長さに切断し、そしてこの両端を突合わせて熱
溶着してリング状に形成している。歯車金型3はプリフ
ォ−ム2及びエポキシ樹脂・フェノ−ル樹脂等の熱硬化
性の樹脂4を収納する受型10とこの受型10に対して
前後進可能な押型11とを備えている。なお、受型10
の内面に所定の歯形を形成すると共に該押型11の中央
部に歯車のボス部となる突出部12を設けている。ま
た、前記樹脂4は例えば、炭素繊維等の短強化繊維を混
合している。The preform 2 is formed by cutting the mat 1 having the above-mentioned tooth profile into a predetermined length, and abutting both ends of the mat 1 and heat-welding the ring to form a ring. The gear metal mold 3 includes a preform 2 and a receiving mold 10 for accommodating a thermosetting resin 4 such as an epoxy resin / phenolic resin, and a pressing mold 11 capable of moving forward and backward with respect to the receiving mold 10. . The receiving mold 10
A predetermined tooth profile is formed on the inner surface of the mold, and a protrusion 12 that serves as a gear boss is provided at the center of the pressing die 11. The resin 4 is mixed with short reinforcing fibers such as carbon fibers.
【0010】つぎに、図5は受型10の中央部に金属製
のボス5を支える突起13を設けている。つぎに、その
作用について説明すると、マット1は赤外線ヒ−タで加
熱された後矢印方向に回転する歯形ロ−ル7とシリコ−
ンロ−ル8で挾持され取出し側に移動する。そして、マ
ット1は歯形成形手段9を通過する時に歯形ロ−ル7と
シリコ−ンロ−ル8とによって歯形を連続して成形され
る(図1参照)。つぎに、所望する長さに切断してこの
両端部を突合わせ、そしてこの突合せ部を熱溶着してリ
ング状のプリフォ−ム2を形成する(図2参照)。その
後、プリフォ−ム2を歯車金型3の受型10に装填する
と共に該プリフォ−ム内の空間部に短強化繊維を混合し
ている粉末の樹脂4を所定量供給する。つづいて、押型
11を下動して樹脂4を圧縮して加熱し、そして所定時
間後に押型11を上方に移動して受型10から樹脂歯車
を取り出す(図3,図4参照)。Next, in FIG. 5, a projection 13 for supporting the metal boss 5 is provided at the center of the receiving mold 10. The operation of the mat 1 will now be described. The mat 1 is heated by an infrared heater and then rotates in the direction of the arrow and the tooth profile roller 7 and the silicone.
It is held by the roll 8 and moved to the take-out side. When the mat 1 passes through the tooth forming means 9, the tooth profile is continuously formed by the tooth profile roll 7 and the silicone roll 8 (see FIG. 1). Next, the both ends are abutted to each other by cutting to a desired length, and the abutting portions are heat-welded to form a ring-shaped preform 2 (see FIG. 2). Then, the preform 2 is loaded into the receiving die 10 of the gear mold 3 and a predetermined amount of the powdered resin 4 mixed with the short reinforcing fibers is supplied to the space in the preform. Subsequently, the pressing die 11 is moved downward to compress and heat the resin 4, and after a predetermined time, the pressing die 11 is moved upward to take out the resin gear from the receiving die 10 (see FIGS. 3 and 4).
【0011】このように、マット1を予め加熱して歯形
成形手段9で歯形を設け、つぎに所望の長さに切断して
プリフォ−ム2を成形することが出来るので樹脂歯車の
生産性を高め得る。また、プリフォ−ム2の成形が容易
で且つ寸法精度の良い歯形形状を得ることができると共
にCSMは樹脂の浸透性が良いので、繊維と樹脂が十分
に密着し強化繊維が歯形の外周部に沿って配置されるこ
とによって補強効果を高め得る。As described above, since the mat 1 can be preheated to form the tooth profile by the tooth forming means 9, and then the preform 2 can be molded by cutting it to a desired length, the productivity of the resin gear can be improved. Can be raised. Further, since the preform 2 can be easily molded and a tooth profile with good dimensional accuracy can be obtained, and CSM has a good resin permeability, the fiber and the resin are sufficiently adhered to each other, and the reinforcing fiber is provided on the outer periphery of the tooth profile. The reinforcement effect can be enhanced by arranging along.
【0012】図5において、所定長さのマット1を受型
10にのせてから押型11を下動してこのマット1を圧
縮成形する。そして、押型11を上方に移動して元の位
置に復帰してから、突起13に金属製のボス5を挿入す
ると共にこのボス5とプリフォ−ム2との間に強化繊維
を混入した樹脂4を供給する。つぎに、押型11を下側
に移動して樹脂4を圧縮及び加熱し(図7参照)、そし
て所定時間後に押型11を上方の元の位置に復帰してか
ら成型された樹脂歯車を受型10から取り出す。In FIG. 5, the mat 1 having a predetermined length is placed on the receiving mold 10 and the pressing mold 11 is moved downward to compression-mold the mat 1. Then, after moving the pressing die 11 upward and returning it to the original position, the metal boss 5 is inserted into the protrusion 13 and the resin 4 containing the reinforcing fiber between the boss 5 and the preform 2. To supply. Next, the pressing die 11 is moved to the lower side to compress and heat the resin 4 (see FIG. 7), and after a predetermined time, the pressing die 11 is returned to the original upper position and then the molded resin gear is received. Take out from 10.
【0013】従って、成形時の樹脂圧で強化繊維のねじ
れやよじれを防止し、歯形の外周部に沿って配置される
ことにより歯部の曲げ強度を高めることが出来る。ま
た、強化繊維のみを歯車外周部へ装填して射出成形を行
っても母材の酸化被膜により母材に強化繊維を埋没させ
ることは困難であった。そこで、歯車外周部を補強する
強化繊維と短繊維で強化された歯車母材樹脂(ナイロン
66)に比べて融点で摂氏約80度以上低い熱可塑性樹
脂(ポリアセタ−ル)とを交織したマットを用い、この
マットを所定の歯車外周部歯形形状の金型に装填して射
出成形したことを特徴とする連続繊維樹脂歯車とした。Therefore, it is possible to prevent the reinforcing fiber from being twisted or twisted by the resin pressure at the time of molding and to increase the bending strength of the tooth portion by disposing the reinforcing fiber along the outer peripheral portion of the tooth profile. Even if only the reinforcing fibers are loaded into the outer peripheral portion of the gear and injection molding is performed, it is difficult to bury the reinforcing fibers in the base material due to the oxide film of the base material. Therefore, a mat in which a reinforced fiber for reinforcing the outer peripheral portion of the gear and a thermoplastic resin (polyacetal) having a melting point lower than about 80 degrees Celsius by a melting point compared with the gear base material resin (nylon 66) reinforced with the short fiber are woven. A continuous fiber resin gear was prepared by using the mat and injecting it into a die having a predetermined tooth profile on the outer periphery of the gear.
【0014】この構成により、歯車外周部歯形形状に沿
って強化繊維が埋没されているので補強効果を高め得
る。また、歯車外周部歯形部の樹脂を摺動特性に優れた
ポリアセタ−ルを使用することにより耐久性の向上を図
れる。そして、該ポリアセタ−ルとナイロン66との大
きい融点差によりこれらの樹脂が成形時に熱融着され又
母材に含まれる短繊維が境界上でアンカ−効果が働き接
合力を高め得る。With this structure, the reinforcing fiber is embedded along the tooth profile of the outer peripheral portion of the gear, so that the reinforcing effect can be enhanced. Further, the durability of the resin can be improved by using polyacetal, which has excellent sliding characteristics, for the resin of the tooth profile of the outer periphery of the gear. Due to the large melting point difference between the polyacetal and nylon 66, these resins are heat-sealed at the time of molding, and the short fibers contained in the base material exert an anchoring effect on the boundary to enhance the bonding strength.
【0015】以下、その構成について説明すると、14
は補強効果・摺動性に優れている炭素繊維15と融点が
摂氏165〜179度のホモポリマ−等のナチュラルポ
リアセタ−ル(以下POMと呼ぶ)16によって交織さ
れたマットである。歯車金型17はコア型18とキャビ
ティ型19とを備えており、コア型18には前記マット
14を内装し得る歯形面を有し、キャビディ型19には
このコア型内に融点が摂氏253〜263度のナイロン
66の樹脂20を案内する案内溝21を設けている。2
2は短繊維(例えばガラス繊維、炭素繊維等)の強化繊
維である。The structure will be described below.
Is a mat woven by carbon fiber 15 having excellent reinforcing effect and slidability and natural polyacetal (hereinafter referred to as POM) 16 such as homopolymer having a melting point of 165 to 179 degrees Celsius. The gear mold 17 includes a core mold 18 and a cavity mold 19. The core mold 18 has a tooth surface capable of containing the mat 14, and the cavidi mold 19 has a melting point of 253 degrees Celsius in the core mold. A guide groove 21 for guiding the resin 20 of nylon 66 of 263 degrees is provided. Two
2 is a reinforcing fiber of a short fiber (for example, glass fiber, carbon fiber, etc.).
【0016】つぎに、その作用について説明する。ま
ず、マット1を歯形状に形成して両端を突き合わせ、そ
してこの突き合わせ部を熱溶着してリング状に形成す
る。そして、このリング状のマットをコア型18に装填
してからキャビティ型19の面に合わせ、つづいて短繊
維の強化繊維21を混入した樹脂20である母材を射出
する。すると、この樹脂20は案内溝21を通ってコア
型18に入るが、この場合POM繊維16は樹脂20の
熱により溶融されて樹脂20と熱溶着される。また、母
材に含まれる短繊維22がPOM層へつき刺さるように
なって両層の境界上でアンカ−効果を生じる。従って、
炭素繊維15も溶融したPOM層に埋没される。Next, its operation will be described. First, the mat 1 is formed into a tooth shape, both ends thereof are butted, and the butted portions are heat-welded to form a ring shape. Then, this ring-shaped mat is loaded into the core mold 18 and then aligned with the surface of the cavity mold 19, and then the base material, which is the resin 20 mixed with the reinforcing fibers 21 of the short fibers, is injected. Then, the resin 20 enters the core mold 18 through the guide groove 21, and in this case, the POM fiber 16 is melted by the heat of the resin 20 and heat-welded to the resin 20. In addition, the short fibers 22 contained in the base material stick to the POM layer and cause an anchor effect on the boundary between both layers. Therefore,
The carbon fibers 15 are also buried in the molten POM layer.
【0017】2層成形歯車では、外層にエラストマ−を
配したものがあるが、外層がエラストマ−以外の場合に
は内層との密着強度が弱く実用性に乏しい。そこで、特
に動力伝達用として歯の曲げ強度及び耐摩耗性を向上出
来る二層成形歯車を提供するために、内層部は靭性と強
度に富む熱可塑性材料で構成し、その外層部は固体潤滑
剤を多量に含む熱硬化性の樹脂で構成した。In some two-layer molded gears, an elastomer is arranged on the outer layer, but when the outer layer is other than the elastomer, the adhesion strength with the inner layer is weak and the practicality is poor. Therefore, in order to provide a two-layer molded gear capable of improving the bending strength and wear resistance of teeth, especially for power transmission, the inner layer portion is made of a thermoplastic material having high toughness and strength, and the outer layer portion thereof is a solid lubricant. It is composed of a thermosetting resin containing a large amount of.
【0018】一般的に歯の曲げ強度と歯面の耐摩耗性と
は材料のもつ特性においては相反するものであるので、
同一の材料でこの2つの特性を満足させることは困難で
ある。例えば、曲げ強度を重視する場合にはナイロン6
6をベ−スにガラス繊維やカ−ボン繊維を充填すればよ
いが、これらの強化材の配合は相手方の部品を摩耗させ
たりあるいは自身の耐摩耗性に支障を生じる。Generally, the bending strength of the tooth and the wear resistance of the tooth surface are contradictory in the characteristics of the material.
It is difficult to satisfy these two characteristics with the same material. For example, when importance is attached to bending strength, nylon 6
6 may be filled with glass fiber or carbon fiber in the base, but the blending of these reinforcing materials causes abrasion of the counterpart component or causes a hindrance to the abrasion resistance of itself.
【0019】然しながら、前記した構成にすることによ
り、外層部が半硬化の状態で内層部を射出成形するの
で、内外層の密着強度が高く、運転中に剥離するのを防
止出来る。また、2重成形のように2種類の金型を必要
としない。以下、その構成について説明すると、23は
内面に歯形24を形成してなるコア型であり、25は案
内溝26を設けているキャビティ型である。However, with the above-mentioned structure, the inner layer is injection-molded with the outer layer being semi-cured, so that the inner and outer layers have high adhesion strength and can be prevented from peeling during operation. Moreover, unlike the double molding, two types of molds are not required. The structure will be described below. Reference numeral 23 is a core mold having a tooth profile 24 formed on the inner surface thereof, and 25 is a cavity mold having a guide groove 26.
【0020】そして、外層部材料としては、2液混合タ
イプの迅速硬化性エポキシ樹脂をベ−スに、PTFEの
粉末を20〜50wt%及びシリコ−ンオイルを3〜1
0wt%含むもので、予めミキサ−27で混合して若干
ゲル化させている。28は前記ミキサ−27でゲル化さ
れた材料を成形1サイクル毎で型開きの際にコア型23
の内面に吹き付けるスプレ−ガンである。なお、スプレ
−ガン28は図示していないがロボットで作業を行な
う。As the material for the outer layer, a 2-liquid mixing type quick-curing epoxy resin is used as a base, 20 to 50 wt% of PTFE powder and 3 to 1 of silicone oil are used.
It is contained at 0 wt% and is mixed in the mixer 27 in advance and slightly gelled. 28 is a core mold 23 when the material gelled by the mixer 27 is opened every molding cycle.
It is a spray gun to be sprayed on the inner surface of. Although not shown, the spray gun 28 is operated by a robot.
【0021】内層材料は、靭性、強度に富むナイロン6
6、ポリアセタ−ル(POM)、PPS等をベ−スにガ
ラス繊維を20〜60wt%含むものとする。ガラス繊
維に代えて炭素繊維を用いてもよい。なお、金型は射出
成形材料のベ−スがナイロン系の場合には摂氏80〜1
20度の温調をかけて外層のエポキシ樹脂の硬化を促進
するとともに内層部の結晶化度を上げて強度を高めてい
る。The inner layer material is nylon 6 which is rich in toughness and strength.
6. Polyacetate (POM), PPS, etc. are contained in the base and contain 20 to 60 wt% of glass fiber. Carbon fibers may be used instead of glass fibers. The mold is 80 to 1 celsius when the injection molding base is nylon.
The temperature is controlled at 20 degrees to accelerate the curing of the epoxy resin in the outer layer and increase the crystallinity of the inner layer to increase the strength.
【0022】つぎに、その作用について説明する。ま
ず、スプレ−ガン28でコア型23の内面に外層部材料
を吹き付ける。つぎに、このコア型23とキャビティ型
25とを型合せして内層部材料を射出する。すると、こ
の内層部材料は案内溝26を通ってコア型内に入り、そ
して所定時間経過後に型開きして成形された2層成形歯
車を取り出す。また、型開きした後にスプレ−ガン28
から外層部材料をコア型23の内面に吹き付け、そして
型閉じして内層部材料を射出する。以下、同様の作業を
繰り返す。Next, its operation will be described. First, the spray gun 28 sprays the outer layer material onto the inner surface of the core mold 23. Next, the core mold 23 and the cavity mold 25 are matched with each other and the inner layer material is injected. Then, the inner layer material enters the core mold through the guide groove 26, and after a lapse of a predetermined time, the mold is opened and the molded two-layer molded gear is taken out. Also, after opening the mold, spray gun 28
The outer layer material is sprayed onto the inner surface of the core mold 23, and the inner layer material is injected by closing the mold. Hereinafter, the same work is repeated.
【図1】 マットの歯形成形手段の側面図である。FIG. 1 is a side view of the tooth-forming means of the mat.
【図2】 プリフォ−ムの斜視図である。FIG. 2 is a perspective view of a preform.
【図3】 歯車金型の正断面図である。FIG. 3 is a front sectional view of a gear mold.
【図4】 樹脂歯車の正断面図である。FIG. 4 is a front sectional view of a resin gear.
【図5】 別実施例の歯車金型の正断面図である。FIG. 5 is a front sectional view of a gear mold according to another embodiment.
【図6】 プレス加工後のプリフォ−ムである。FIG. 6 is a preform after press working.
【図7】 樹脂とボスを充填した別実施例の歯車金型の
正断面図である。FIG. 7 is a front sectional view of a gear mold according to another embodiment filled with resin and a boss.
【図8】 プリフォ−ムとボスの一部拡大断面図であ
る。FIG. 8 is a partially enlarged cross-sectional view of a preform and a boss.
【図9】 金属製のボスを有する一部破断した樹脂歯車
の斜視図である。FIG. 9 is a perspective view of a partially broken resin gear having a metal boss.
【図10】 図9のA−A断面図である。10 is a cross-sectional view taken along the line AA of FIG.
【図11】 マットの正面図である。FIG. 11 is a front view of the mat.
【図12】 マットをコア型に装填した金型の側断面図
である。FIG. 12 is a side sectional view of a mold in which the mat is loaded in the core mold.
【図13】 母材を供給している金型の一部の側断面図
である。FIG. 13 is a side cross-sectional view of a part of a mold supplying a base material.
【図14】 一部切除した樹脂歯車の斜視図である。FIG. 14 is a perspective view of a partially removed resin gear.
【図15】 母材とPOM層の接着部の断面図である。FIG. 15 is a cross-sectional view of a bonding portion between a base material and a POM layer.
【図16】 コア型の内面に外層部材料の吹き付けを示
す図である。FIG. 16 is a diagram showing the spraying of the outer layer material onto the inner surface of the core mold.
【図17】 2層成形歯車の斜視図である。FIG. 17 is a perspective view of a two-layer molded gear.
1 マット 2 プリフォ−ム 3 歯車金型 4 樹脂 5 ボス 1 Mat 2 Preform 3 Gear mold 4 Resin 5 Boss
Claims (2)
ット1を形成し、該マット1を歯形状にすると共に所定
の歯数分に切断してプリフォ−ム2を設け、該プリフォ
−ム2を歯車金型3に装填すると共にプリフォ−ム2で
囲まれた空間部に強化繊維を有する樹脂4を供給し、該
樹脂4を加熱圧縮成形してなる樹脂歯車。1. A mat 1 is formed by mixing reinforcing fibers and a thermoplastic resin, and the mat 1 is formed into a tooth shape and is cut into a predetermined number of teeth to provide a preform 2, and the preform 2 is formed. A resin gear obtained by charging the resin mold 2 with the gear 2 and supplying the resin 4 having the reinforcing fiber to the space surrounded by the preform 2 and heat-compressing the resin 4.
てなる請求項1記載の樹脂歯車。2. The resin gear according to claim 1, wherein a metal boss 5 is provided at the center of the space.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4076495A JPH05280617A (en) | 1992-03-31 | 1992-03-31 | Resin gear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4076495A JPH05280617A (en) | 1992-03-31 | 1992-03-31 | Resin gear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05280617A true JPH05280617A (en) | 1993-10-26 |
Family
ID=13606805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4076495A Pending JPH05280617A (en) | 1992-03-31 | 1992-03-31 | Resin gear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05280617A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011025466A (en) * | 2009-07-23 | 2011-02-10 | Toyota Motor Corp | Method for manufacturing gear made of fiber-reinforced resin |
DE102017223305A1 (en) * | 2017-12-20 | 2019-06-27 | Technische Universität Dresden | Continuous fiber reinforced plastic gear and method of making the same |
WO2019138608A1 (en) * | 2018-01-11 | 2019-07-18 | 住友重機械工業株式会社 | Gear and gear manufacturing method |
-
1992
- 1992-03-31 JP JP4076495A patent/JPH05280617A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011025466A (en) * | 2009-07-23 | 2011-02-10 | Toyota Motor Corp | Method for manufacturing gear made of fiber-reinforced resin |
DE102017223305A1 (en) * | 2017-12-20 | 2019-06-27 | Technische Universität Dresden | Continuous fiber reinforced plastic gear and method of making the same |
DE102017223305B4 (en) * | 2017-12-20 | 2021-01-28 | Technische Universität Dresden | Continuous fiber-reinforced plastic gear and process for its manufacture |
WO2019138608A1 (en) * | 2018-01-11 | 2019-07-18 | 住友重機械工業株式会社 | Gear and gear manufacturing method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3352669B1 (en) | Sandwich forming guide for transmission | |
DE69131459T2 (en) | Process for producing a multi-layer molded body | |
US6916439B2 (en) | Colored laminate and a method for coloring the surface of a membrane | |
CN104786517B (en) | The manufacturing method and rack housing of rack housing | |
EP0743632B1 (en) | Acoustic absorbing component and production process thereof | |
CA2236782A1 (en) | Method of molding a fiber-reinforced resin laminate and a laminated molding | |
GB1536913A (en) | Plastics articles and method for manufacturing | |
EP1008432A4 (en) | A method of forming a light-weight, fiber-reinforced thermoplastic resin product and a light-weight molded product | |
CA2228678A1 (en) | Method and apparatus for making herringbone gears and pumps incorporating the same | |
TW310014U (en) | Composite diaphragm for diaphragm pump | |
EP1849588B1 (en) | Method of manufacture of a composite part | |
US4251306A (en) | Method of producing a reinforced endless toothed belt having a fabric cover | |
JPH05280617A (en) | Resin gear | |
US4708492A (en) | Watch case element and wristlet assembly | |
JP2004052791A (en) | Rotary type power transmitting member and its manufacturing method | |
JP3687964B2 (en) | Sandwich molding movable guide for transmission | |
US6843744B2 (en) | Splicing joint and method for synchronous drive belt | |
US4726558A (en) | Grommet and grommet retaining member | |
JP3587835B2 (en) | Movable guide for transmission by sandwich molding | |
JPS63162225A (en) | Manufacture of long timing belt | |
CA2135150A1 (en) | Method of and apparatus for injection molding of multi-layer objects | |
JPS60219035A (en) | Manufacture of fiber reinforced resin formed product with coating layer | |
JPH0919942A (en) | Interior material and manufacture thereof | |
JPS6288842A (en) | Toothed belt made of synthetic resin and manufacturing method therefor | |
JP2506566B2 (en) | Molding method for synthetic resin hollow molding |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |