JP2610932B2 - Rotor made of resin with bearing - Google Patents

Rotor made of resin with bearing

Info

Publication number
JP2610932B2
JP2610932B2 JP63054158A JP5415888A JP2610932B2 JP 2610932 B2 JP2610932 B2 JP 2610932B2 JP 63054158 A JP63054158 A JP 63054158A JP 5415888 A JP5415888 A JP 5415888A JP 2610932 B2 JP2610932 B2 JP 2610932B2
Authority
JP
Japan
Prior art keywords
resin
bearing
outer diameter
ring
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP63054158A
Other languages
Japanese (ja)
Other versions
JPH01229168A (en
Inventor
信夫 池田
浩之 横畠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
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 Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP63054158A priority Critical patent/JP2610932B2/en
Publication of JPH01229168A publication Critical patent/JPH01229168A/en
Application granted granted Critical
Publication of JP2610932B2 publication Critical patent/JP2610932B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1459—Coating annular articles

Landscapes

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

Description

【発明の詳細な説明】 ＜産業上の利用分野＞ 本発明は、樹脂製プーリのように軸心部に軸受を有す
る樹脂製回転体と、その製法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a resin-made rotating body having a bearing at an axial center portion, such as a resin-made pulley, and a method of manufacturing the same.

＜従来の技術＞ 樹脂製プーリは、第５図に示すように、軸受10と樹脂
製のプーリ本体20とからなり、軸受10はプーリ本体20の
成形時にその軸心部に埋設される。<Prior Art> resin pulley, as shown in FIG. 5 consists of the bearing 1 0 and resin pulley body 2 0 Prefecture, bearing 1 0 embedded in its axial center portion during the molding of the pulley body 2 0 Is done.

その製造に当たっては、まず成形金型の内部の所定個
所に軸受10がセットされる。この軸受10の周りにはプー
リ本体20の全体形状に対応するキャビティが形成されて
おり、このキャビティに樹脂が射出される。In its production, bearing 1 0 is set to a first predetermined position within the molding die. This is around the bearing 1 0 is formed with a cavity corresponding to the overall shape of the pulley body 2 0, resin is injected into the cavity.

＜発明が解決しようとする問題点＞ ところで、樹脂製プーリは、その表面、とくに外周部
分の表面を平滑で光沢を有するように成形する必要があ
り、このような表面に仕上げるためには、プーリ本体20
の成形時、その成形圧を一定圧以上の高圧にしなければ
ならない。<Problems to be Solved by the Invention> By the way, the surface of the resin pulley, especially the surface of the outer peripheral portion, needs to be formed so as to have a smooth and glossy surface. body 2 0
During molding, the molding pressure must be higher than a certain pressure.

しかしながら、成形時に成形圧を高めると、インサー
トである軸受10の外輪に歪みが生じ、外輪軌道の真円度
が低下したり、転動体であるボールが内外輪に食い込ん
で軌道面に圧痕が発生したりする。このような問題は、
特に軸受10の外輪の肉厚が薄い場合に発生しやすく、そ
のため、樹脂製プーリに埋め込む軸受の種類が制限され
る。However, increasing the molding pressure at the time of molding, distortion is generated in the bearing 1 0 of the outer ring is inserted, the roundness is lowered in the outer ring raceway, balls are rolling elements indentations on the raceway surface bite into the inner and outer rings Or occur. Such a problem,
Especially likely to occur when the thickness of the outer ring of the bearing 1 0 is thin, therefore, the type of bearing to be embedded in the resin pulley is limited.

このように、プーリ本体20の成形に当たっては、樹脂
部分であるプーリ本体20の表面状態と、軸受10の歪みと
を考慮しなければならず、両方を満足させる成形条件は
容易に見い出せない。Thus, when the molding of the pulley body 2 0, and the surface condition of the pulley body 2 0 is a resin part, it is necessary to consider the distortion of the bearing 1 0, molding conditions to satisfy both easily Miidase Absent.

これに対しては、軸受10の周りにプーリ本体20の内径
部2a0を成形し、次に、この内径部2a0の周りに外径部2b
0を成形することが考えられるが、これでは、成形作業
が２段工程となり、作業が複雑となってコスト高を招く
ので、到底採用しがたい。For this, by forming the inner diameter portion 2a 0 of the pulley body 2 0 around the bearing 1 0, then the outer diameter 2b around the inner diameter portion 2a 0
It is conceivable to mold 0 , but in this case, the molding operation is a two-step process, which complicates the operation and causes an increase in cost.

本発明は、上述の問題点に鑑みてなされたものであっ
て、樹脂部分である本体、特にその外周部分の表面状態
が平滑で光沢があり、かつ軸受の歪み変形が少ない樹脂
製回転体と、このような回転体を容易に製造しうる製法
を提供することを目的とする。The present invention has been made in view of the above-described problems, and has a resin rotating body, which has a resin portion and a main body, particularly a smooth and glossy surface state of an outer peripheral portion thereof, and has less distortion deformation of a bearing. It is another object of the present invention to provide a manufacturing method capable of easily manufacturing such a rotating body.

＜問題点を解決するための手段＞ 本発明の軸受付き樹脂製回転体は、上記の目的を達成
するために、樹脂製の本体の軸心部に転がり軸受を設け
た軸受付き樹脂製回転体において、前記軸受の外輪外周
を覆うように形成される前記本体の射出成形内径円筒部
と、該内径円筒部の外周にこれより幅狭の部分を有する
リング成形体と、該リング成形体の外周にこれより幅広
の射出成形円筒部と、を有し、前記内・外両径円筒部が
隔離形成されている構成とした。<Means for Solving the Problems> A resin-made rotating body with a bearing of the present invention is a resin-made rotating body with a bearing, in which a rolling bearing is provided at an axis of a resin-made main body in order to achieve the above object. In the above, the injection molded inner diameter cylindrical portion of the main body formed so as to cover the outer periphery of the outer ring of the bearing, a ring molded body having a narrower portion on the outer periphery of the inner diameter cylindrical portion, and an outer periphery of the ring molded body And an injection-molded cylindrical portion wider than this, and the inner and outer diameter cylindrical portions are formed separately.

また、成形金型の内部に軸受をセットし、この軸受の
周囲のキャビティに樹脂を充填して軸受付き樹脂製回転
体を製造するに当たって、前記キャビティのうち、回転
体本体の内径部に対応する内径側キャビティと外径部に
対応する外径側キャビティとの間にリングをセットして
内外両径側キャビティを互いに分離し、外径側キャビテ
ィには内径側キャビティより高い成形圧を設定した上
で、内外両径側キャビティに同一の樹脂材料を充填する
ようにした。Further, when a bearing is set inside a molding die, and a cavity around the bearing is filled with a resin to produce a resin-made rotating body with a bearing, the inside of the cavity corresponds to the inner diameter portion of the rotating body main body. A ring is set between the inner diameter side cavity and the outer diameter side cavity corresponding to the outer diameter part, the inner and outer diameter side cavities are separated from each other, and the outer diameter side cavity is set at a higher molding pressure than the inner diameter side cavity. Thus, the same resin material is filled in the inner and outer diameter side cavities.

＜作用＞ 上記構成の樹脂製回転体では、樹脂部分である本体が
リングにより内径部と外径部とに分離されているから、
成形時、内外両径部を互いに異なる成形圧で成形するこ
とが可能になる。<Operation> In the resin-made rotating body having the above configuration, the main body, which is a resin portion, is separated into an inner diameter portion and an outer diameter portion by a ring.
At the time of molding, both the inner and outer diameter portions can be molded with different molding pressures.

また、本発明の樹脂製回転体の製法では、成形金型内
のキャビティがリングにより内径側キャビティと外径側
キャビティとに分離されており、各キャビティにはそれ
ぞれ対応した成形圧が設定されているから、溶融樹脂の
一回の充填により、本体の外径部が高い成形圧で、また
内径部が低い成形圧で成形される。これによって、外径
部の表面状態が良好で、かつ軸受の歪みが少ない樹脂製
回転体が得られる。Further, in the method of manufacturing a resin rotating body according to the present invention, the cavity in the molding die is separated into an inner diameter side cavity and an outer diameter side cavity by a ring, and a molding pressure corresponding to each cavity is set. Thus, the outer diameter portion of the main body is molded with a high molding pressure and the inner diameter portion is molded with a low molding pressure by a single filling of the molten resin. As a result, it is possible to obtain a resin-made rotating body having a good surface condition of the outer diameter portion and little distortion of the bearing.

＜実施例＞ 以下、本発明を図面に示す実施例に基づいて詳細に説
明する。<Example> Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

第１図は、本発明の第１実施例に係る樹脂製プーリの
半断面図である。この実施例のプーリは、軸受１と、樹
脂部分であるプーリ本体２とからなる。プーリ本体２
は、軸受１の外周面に結合する内径部2aと、ベルト案内
面を有する外径部2bとに分割されており、内径部2aと外
径部2bとは、その間に介在する金属製もしくは樹脂製の
リング３により互いに結合されている。また、内径部2a
と外径2bとは同一の樹脂材料、たとえばポリアミド樹脂
で構成されるが、外径部2bは内径部2aより高い成形圧で
成形されて、その表面は平滑で光沢のある面に仕上げら
れている。FIG. 1 is a half sectional view of a resin pulley according to a first embodiment of the present invention. The pulley of this embodiment includes a bearing 1 and a pulley body 2 which is a resin portion. Pulley body 2
Is divided into an inner diameter portion 2a connected to the outer peripheral surface of the bearing 1 and an outer diameter portion 2b having a belt guide surface. The inner diameter portion 2a and the outer diameter portion 2b are made of metal or resin interposed therebetween. Are connected to each other by a ring 3 made of stainless steel. Also, the inner diameter part 2a
The outer diameter 2b is made of the same resin material, for example, a polyamide resin, but the outer diameter part 2b is molded with a higher molding pressure than the inner diameter part 2a, and the surface is finished to a smooth and glossy surface. I have.

第２図は、上記の樹脂製プーリの製造に使用する成形
金型の断面図で、この断面図に基づいて樹脂製プーリの
製法の詳細を説明する。FIG. 2 is a cross-sectional view of a molding die used for manufacturing the above-described resin pulley, and the details of the method of manufacturing the resin pulley will be described based on this cross-sectional view.

成形金型４は、上型4aと下型4bとからなる。上下両型
間4a,4bの所定位置には軸受１がセットされる。そし
て、上下両型4a,4b間で軸受１の周りには、プーリ本体
２の全体形状に対応するキャビティ５が形成される。こ
のキャビティ５は、プーリ本体２の内径部2aに対応する
内径側キャビティ５と、外径部2bに対応する外径側キャ
ビティ5bと、これら内外両キャビティ5a,5bを連通させ
る細幅の中間キャビティ5cとからなる。そして、中間キ
ャビティ5cの位置に別に用意したリング３がセットされ
る。このリング３により、キャビティ５の全体は、内径
側キャビティ5aと外径側キャビティ5bとに分割される。The molding die 4 includes an upper die 4a and a lower die 4b. The bearing 1 is set at a predetermined position between the upper and lower dies 4a, 4b. A cavity 5 corresponding to the entire shape of the pulley body 2 is formed around the bearing 1 between the upper and lower dies 4a and 4b. The cavity 5 has an inner diameter side cavity 5 corresponding to the inner diameter part 2a of the pulley body 2, an outer diameter side cavity 5b corresponding to the outer diameter part 2b, and a narrow intermediate cavity for communicating the inner and outer cavities 5a, 5b. 5c. Then, a separately prepared ring 3 is set at the position of the intermediate cavity 5c. This ring 3 divides the entire cavity 5 into an inner diameter side cavity 5a and an outer diameter side cavity 5b.

また、上型4aには、内径側キャビティ5aと外径側キャ
ビティ5bとにそれぞれ臨むランナ6,7が形成されてお
り、各ランナ6,7は、それぞれゲート8,9により対応する
キャビティ5a,5bに通じている。ここで、外径側のゲー
ト９は、内径側のゲート８より大径に形成されている。
これは、後述するように、外径側キャビティ5bでの成形
圧を内径側キャビティ5aの成形圧より高圧に設定するた
めである。The upper mold 4a is formed with runners 6, 7 facing the inner diameter side cavity 5a and the outer diameter side cavity 5b, respectively, and the runners 6, 7 correspond to the cavities 5a, Leads to 5b. Here, the outer diameter side gate 9 is formed to be larger in diameter than the inner diameter side gate 8.
This is because the molding pressure in the outer diameter side cavity 5b is set to be higher than the molding pressure in the inner diameter side cavity 5a, as described later.

上記のように成形金型４内に軸受１、リング３をセッ
トした上で、スプルー10から各ランナ6,7、ゲート8,9を
通じて各キャビティ5a,5bに溶融樹脂が充填される。こ
こで、内径側キャビティ5aにおいては、溶融樹脂が外径
側のゲート９よりも細いゲート８を通過するので、この
細いゲート８での流動抵抗により圧力損失が生じ、成形
圧が外径側キャビティ5bよりも低くなる。そのため、内
径側キャビティ5aには低い成形圧で樹脂が充填され、外
径側キャビティ5bには高い成形圧で樹脂が充填される。After setting the bearing 1 and the ring 3 in the molding die 4 as described above, the cavities 5a and 5b are filled with the molten resin from the sprue 10 through the runners 6 and 7 and the gates 8 and 9. Here, in the inner diameter side cavity 5a, since the molten resin passes through the gate 8 which is thinner than the outer diameter side gate 9, pressure loss occurs due to the flow resistance at the thinner gate 8, and the molding pressure is reduced by the outer diameter side cavity. Lower than 5b. Therefore, the resin is filled into the inner cavity 5a with a low molding pressure, and the resin is filled into the outer cavity 5b with a high molding pressure.

上記の工程により、プーリ本体２の外径部2bは高い成
形圧で成形されるので、その表面は平滑で光沢を有す
る。また、内径部2aは低い成形圧で成形されるので、軸
受１には過大な圧力が作用せず、そのため、軸受１の歪
みは最少限に抑制される。By the above process, the outer diameter portion 2b of the pulley body 2 is formed with a high forming pressure, so that the surface is smooth and glossy. Further, since the inner diameter portion 2a is formed with a low forming pressure, an excessive pressure does not act on the bearing 1, so that the distortion of the bearing 1 is suppressed to a minimum.

また、成形樹脂の冷却時、外径部2bの収縮力はリング
３に受け止められるから、軸受１に過大な収縮圧力が加
わらず、この点からも、軸受１の歪みが抑制される。Further, when the molding resin is cooled, the contraction force of the outer diameter portion 2b is received by the ring 3, so that no excessive contraction pressure is applied to the bearing 1, and the distortion of the bearing 1 is also suppressed from this point.

第１の実施例では、リング３をほぼ中間キャビティ5c
のみを埋める形状としたが、リング３の形状はこれに限
定されるものではなく、たとえば第３図に示すような形
状としてもよい。In the first embodiment, the ring 3 is substantially connected to the intermediate cavity 5c.
Although only the shape that fills in is used, the shape of the ring 3 is not limited to this, and may be, for example, a shape as shown in FIG.

第３図は、本発明の第２実施例に係る樹脂製プーリの
半断面図である。この実施例の樹脂製プーリは、樹脂部
分であるプーリ本体２が内径部2aと外径部2bとに分割さ
れており、内径部2aと外径部2bとがリング３により互い
に結合されている点は、第１の実施例と同様である。第
１の実施例と異なるのは、リング３がＨ形の断面形状
で、内径部2aの外周で軸方向に広がる幅広部分3aと、外
径部2bの内周で軸方向に広がる幅広部分3bとを有してお
り、内径部2aと外径部2bとがいずれも肉薄に形成されて
いる点である。外径部2bの両側には、ベルト案内用のフ
ランジ2cが形成されている。FIG. 3 is a half sectional view of a resin pulley according to a second embodiment of the present invention. In the resin pulley of this embodiment, a pulley body 2 as a resin portion is divided into an inner diameter portion 2a and an outer diameter portion 2b, and the inner diameter portion 2a and the outer diameter portion 2b are connected to each other by a ring 3. The points are the same as in the first embodiment. The difference from the first embodiment is that the ring 3 has an H-shaped cross-sectional shape, and a wide portion 3a that extends in the axial direction around the outer periphery of the inner diameter portion 2a and a wide portion 3b that extends in the axial direction around the inner periphery of the outer diameter portion 2b. And the inner diameter portion 2a and the outer diameter portion 2b are both formed to be thin. On both sides of the outer diameter portion 2b, flanges 2c for belt guide are formed.

第４図は、第２実施例の樹脂製プーリの成形に使用す
る成形金型の断面図である。この成形金型４は、上型4a
と下型4bと中型4cとからなる。これらの型4a,4b,4c間に
軸受１がセットされ、軸受１の周りに、プーリ本体２の
全体形状に対応するキャビティ５が形成される点は、第
２図に示した成形金型４の場合と同様である。そして、
リング３は、中間キャビティ5cと、内径側キャビティ5a
の外周部分と、外径側キャビティ5bの内周部分を埋める
形でセットされる。そして、第１実施例の場合と同様
に、溶融樹脂が内外両キャビティ5a,5bにそれぞれ対応
するランナ6,7、ゲート8,9を通じて供給され、内径側キ
ャビティ5aには低い成形圧で樹脂が充填され、外径側キ
ャビティ5bには高い樹脂が充填される。FIG. 4 is a sectional view of a molding die used for molding the resin pulley of the second embodiment. This molding die 4 includes an upper die 4a
And a lower mold 4b and a middle mold 4c. The point that the bearing 1 is set between these dies 4a, 4b, and 4c and the cavity 5 corresponding to the entire shape of the pulley body 2 is formed around the bearing 1 is that the molding die 4 shown in FIG. Is the same as And
The ring 3 includes an intermediate cavity 5c and an inner-side cavity 5a.
And the inner peripheral portion of the outer diameter side cavity 5b are set. As in the case of the first embodiment, the molten resin is supplied to the inner and outer cavities 5a and 5b through the corresponding runners 6 and 7 and the gates 8 and 9, respectively. The outer diameter side cavity 5b is filled with high resin.

第２実施例の樹脂製プーリでは、外径部2bの表面が平
滑で光沢を有し、かつ軸受１の歪みが最少限に抑制され
るほか、外径部2bの肉厚が均一となり、「ヒケ」が抑え
られる。In the resin pulley of the second embodiment, the surface of the outer diameter portion 2b is smooth and glossy, the distortion of the bearing 1 is minimized, and the thickness of the outer diameter portion 2b becomes uniform. Sink is suppressed.

なお、上記各実施例では、内外両径部2a,2bの成形圧
を設定するのに、対応するキャビティ5a,5bへのゲート
8,9の径を調整したが、ゲート8,9の数や長さを変えるこ
とによって、成形圧を所要の値に設定するようにしても
よい。In each of the above embodiments, the gates to the corresponding cavities 5a, 5b are set to set the molding pressure of the inner and outer diameter portions 2a, 2b.
Although the diameters of the gates 8 and 9 have been adjusted, the molding pressure may be set to a required value by changing the number and length of the gates 8 and 9.

また、本発明はプーリに限らず、ギア、スプロケット
等の他の回転体にも実施しうる。Further, the present invention is not limited to pulleys, but can be applied to other rotating bodies such as gears and sprockets.

＜発明の効果＞ 以上のように、本発明の樹脂製回転体は、樹脂部分で
ある本体がリングにより内径部と外径部とに分離されて
いるから、成形時、内外両径部にそれぞれ適した成形圧
を設定することができ、したがって、本体の内外両径部
間で互いに成形圧の異なる回転体が、溶融樹脂の一回の
充填により製造することができ、工程を複雑化すること
なく、容易に実施しうる。<Effect of the Invention> As described above, in the resin-made rotating body of the present invention, since the main body, which is the resin portion, is separated into the inner diameter portion and the outer diameter portion by the ring, the inner and outer diameter portions are respectively formed during molding. Appropriate molding pressure can be set, so that rotating bodies having different molding pressures between the inner and outer diameter portions of the main body can be manufactured by a single filling of the molten resin, which complicates the process. And can be easily implemented.

また、本発明の製法によれば、本体の外径部が高い成
形圧で、また内径部が低い成形圧で成形されるから、外
径部の表面状態が良好で、かつ軸受の歪みが少ない樹脂
製回転体が得られる。Further, according to the manufacturing method of the present invention, since the outer diameter portion of the main body is molded with a high molding pressure and the inner diameter portion is molded with a low molding pressure, the surface condition of the outer diameter portion is good, and the distortion of the bearing is small. A resin rotating body is obtained.

【図面の簡単な説明】[Brief description of the drawings]

第１図および第２図は本発明の第１実施例に係り、第１
図は樹脂製プーリの半断面図、第２図はその成形に使用
する金型の断面図である。第３図および第４図は本発明
の第２実施例に係り、第３図は樹脂製プーリの半断面
図、第４図はその成形に使用する金型の断面図である。 第５図は従来の樹脂製プーリの半断面図である。 １……軸受、２……本体、2a……内径部、2b……外径
部、３……リング、４……成形金型、5a……内径側キャ
ビティ、5b……外径側キャビティ。FIGS. 1 and 2 relate to a first embodiment of the present invention.
FIG. 2 is a half sectional view of a resin pulley, and FIG. 2 is a sectional view of a mold used for molding the pulley. 3 and 4 relate to a second embodiment of the present invention. FIG. 3 is a half sectional view of a resin pulley, and FIG. 4 is a sectional view of a mold used for molding the pulley. FIG. 5 is a half sectional view of a conventional resin pulley. DESCRIPTION OF SYMBOLS 1 ... Bearing, 2 ... Body, 2a ... Inside diameter part, 2b ... Outside diameter part, 3 ... Ring, 4 ... Molding die, 5a ... Inside diameter side cavity, 5b ... Outside diameter side cavity.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】樹脂製の本体の軸心部に転がり軸受を設け
た軸受付き樹脂製回転体において、 前記軸受の外輪外周を覆うように形成される前記本体の
射出成形内径円筒部と、該内径円筒部の外周にこれより
幅狭の部分を有するリング成形体と、該リング成形体の
外周にこれより幅広の射出成形外径円筒部と、を有し、
前記内・外両径円筒部が隔離形成されていることを特徴
とする軸受付き樹脂製回転体。1. A resin-made rotating body having a bearing provided with a rolling bearing at an axis of a resin-made main body, wherein an injection-molded inner diameter cylindrical portion of the main body formed so as to cover an outer periphery of an outer ring of the bearing; A ring molded body having a narrower portion on the outer periphery of the inner diameter cylindrical portion, and an injection molded outer diameter cylindrical portion wider than this on the outer periphery of the ring molded body,
A rotating body made of resin with a bearing, wherein the inner and outer diameter cylindrical portions are formed separately. 【請求項２】成形金型の内部に軸受をセットし、この軸
受の周囲のキャビティに樹脂を充填して軸受付き樹脂製
回転体を製造するに当たって、 前記キャビティのうち、回転体本体の内径部に対応する
内径側キャビティと外径部に対応する外径型キャビティ
との間にリングをセットして内外両径側キャビティを互
いに分離し、外径側キャビティには内径側キャビティよ
り高い成形圧を設定した上で、内外両径側キャビティに
同一の樹脂材料を充填することを特徴とする軸受付き樹
脂製回転体の製法。2. A bearing is set inside a molding die, and a resin is filled in a cavity around the bearing to produce a resin-made rotating body with a bearing. A ring is set between the inner diameter side cavity corresponding to the outer diameter part and the outer diameter type cavity corresponding to the outer diameter part to separate the inner and outer diameter side cavities from each other, and a higher molding pressure is applied to the outer diameter side cavity than the inner diameter side cavity. A method of manufacturing a resin-made rotating body with a bearing, wherein the same resin material is filled in both inner and outer radial cavities after setting.
JP63054158A 1988-03-08 1988-03-08 Rotor made of resin with bearing Expired - Fee Related JP2610932B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63054158A JP2610932B2 (en) 1988-03-08 1988-03-08 Rotor made of resin with bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63054158A JP2610932B2 (en) 1988-03-08 1988-03-08 Rotor made of resin with bearing

Publications (2)

Publication Number Publication Date
JPH01229168A JPH01229168A (en) 1989-09-12
JP2610932B2 true JP2610932B2 (en) 1997-05-14

Family

ID=12962739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63054158A Expired - Fee Related JP2610932B2 (en) 1988-03-08 1988-03-08 Rotor made of resin with bearing

Country Status (1)

Country Link
JP (1) JP2610932B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19701087B4 (en) * 1997-01-15 2005-12-22 Skf Gmbh jig
WO1998034053A1 (en) * 1997-02-03 1998-08-06 Litens Automotive Partnership Pulley assembley having molded connection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993333A (en) * 1982-11-19 1984-05-29 Sansho Giken Kk Rotary part made of synthetic resin and manufacture thereof
JPH0676822B2 (en) * 1986-06-03 1994-09-28 光洋精工株式会社 Bearing pulley and method for manufacturing the same

Also Published As

Publication number Publication date
JPH01229168A (en) 1989-09-12

Similar Documents

Publication Publication Date Title
JPH10258141A (en) Production of golf ball using injection molding die
US4397802A (en) Method for making linear motion rolling bearing
JP2610932B2 (en) Rotor made of resin with bearing
US20050064059A1 (en) Plasticizing barrel lined on the inside with a coating, and method of making such a plasticizing barrel
JP3563466B2 (en) Resin molding
JP3596131B2 (en) Injection molded gear
JP2815521B2 (en) Ring forming method and ring forming apparatus
US6298880B1 (en) Spool valve and manufacturing method therefor
WO2020175351A1 (en) Insert bearing and manufacturing method therefor, sintered bearing suitable for insert bearing, sintered insert component and manufacturing method therefor, and sintered component suitable for sintered insert component
JP2002144365A (en) Resin sleeve and manufacturing method therefor
JP2562018B2 (en) Synthetic resin pulley
JP4269530B2 (en) Bearing with resin pulley and manufacturing method thereof
WO2021153488A1 (en) Insert sintered part and manufacturing method for same
JPS6288842A (en) Toothed belt made of synthetic resin and manufacturing method therefor
JP3926939B2 (en) Synthetic resin molded gear
JP3621009B2 (en) Synthetic resin molded gear
JPH028744Y2 (en)
JP7516051B2 (en) Insert bearing and manufacturing method thereof, sintered bearing suitable for insert bearing, sintered insert part and manufacturing method thereof, sintered part suitable for sintered insert part
JPH10231919A (en) Pulley with bearing formed in a single piece and its manufacture
JP2002200661A (en) Disk-shaped synthetic resin molding
JP2000000852A (en) Plastic molding
JPH07239009A (en) Cam shaft and its manufacture
JPS63222844A (en) Manufacture of roller having varying diameter
JP2728546B2 (en) Guide roller and method of manufacturing the same
JP2003039510A (en) Disc-like synthetic resin molded article

Legal Events

Date Code Title Description
S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees