JPS62253419A - Manufacture of molded member having rubber layer - Google Patents
Manufacture of molded member having rubber layerInfo
- Publication number
- JPS62253419A JPS62253419A JP9858786A JP9858786A JPS62253419A JP S62253419 A JPS62253419 A JP S62253419A JP 9858786 A JP9858786 A JP 9858786A JP 9858786 A JP9858786 A JP 9858786A JP S62253419 A JPS62253419 A JP S62253419A
- Authority
- JP
- Japan
- Prior art keywords
- rubber layer
- rubber
- core
- circumferential surface
- vulcanized
- 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
- 229920001971 elastomer Polymers 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 229920005989 resin Polymers 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims abstract description 36
- 238000000465 moulding Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000004636 vulcanized rubber Substances 0.000 claims description 4
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 229920001568 phenolic resin Polymers 0.000 abstract description 5
- 239000005011 phenolic resin Substances 0.000 abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 3
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 2
- 239000010962 carbon steel Substances 0.000 abstract description 2
- 244000043261 Hevea brasiliensis Species 0.000 abstract 1
- 239000002075 main ingredient Substances 0.000 abstract 1
- 229920003052 natural elastomer Polymers 0.000 abstract 1
- 229920001194 natural rubber Polymers 0.000 abstract 1
- 229920003986 novolac Polymers 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 43
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000001721 transfer moulding Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 241000271317 Gonystylus bancanus Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- INBDPOJZYZJUDA-UHFFFAOYSA-N methanedithiol Chemical compound SCS INBDPOJZYZJUDA-UHFFFAOYSA-N 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N methyl mercaptane Natural products SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- B29C45/14778—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 the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14811—Multilayered articles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はゴム層をもつ成形体の製造方法に関し、詳しく
は表層が樹脂から形成され、同軸的にゴム層をｂ゛つ成
形体の製造方法に関する。本発明の製造方法はプーリ、
１Ｉ１１１ｉ１０−ラなどの回転体を製造するのに利用
される。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a molded article having a rubber layer, and more specifically, a method for producing a molded article whose surface layer is made of resin and which has a coaxial rubber layer. Regarding the method. The manufacturing method of the present invention includes a pulley,
It is used to manufacture rotating bodies such as 1I111i10-ra.
［従来の技術］
近年、軽量化、騒音防止、生産性などの観点から、樹脂
装のプーリ、歯車などの回転体が多用されている。イし
て形状が小さいもの、あるいは伝達トルクが小さい分野
に用いられる乙のなどの場合には、全体を＠脂で形成Ｊ
ることができる。しかしながら大形状のもの、あるいは
伝達１−ルクが大ぎいものの場合には、樹脂のみで形成
すると強度に劣る場合がある。そこで芯部を金属製とし
て強度をした１１表層にｒｘ４脂部を形成したものが知
られている。そしてこのような回転体において、さらに
振動、！！音などを低減するには、芯部と樹脂部の間に
ゴム層を介在させることが有効であることが知られてい
る。[Prior Art] In recent years, resin-coated rotary bodies such as pulleys and gears have been frequently used from the viewpoints of weight reduction, noise prevention, productivity, and the like. If the shape is small, or if it is used in fields where the transmitted torque is small, the entire part is made of @fat.
can be done. However, in the case of a large shape or one in which the transmitted torque is large, the strength may be inferior if it is made only of resin. Therefore, it is known that the core part is made of metal and the 11 surface layer has an RX4 fat part formed therein for strength. And in such a rotating body, even more vibration! ! It is known that interposing a rubber layer between the core part and the resin part is effective in reducing noise.
ところでこのにうな芯部と樹脂部の間にゴム層を介在さ
せるには、
（１）芯部および樹脂部を予め成形し゛（Ｊｊき、芯部
の外周表面あるいは樹脂部の内周表面のいずれか一方に
予め所定の形状に成形されたゴムを接着などで取りつけ
、その後芯部と樹脂部とを嵌合する圧入法、
（２）芯部および樹脂部を予め成形してＪｉき、芯部お
よび樹脂部を所定のゴム成形型内に配置した後、芯部と
樹脂部の間でゴムを熱成形する方法、などの方法が知ら
れている。By the way, in order to interpose a rubber layer between the core part and the resin part, (1) the core part and the resin part are pre-molded (Jj), and either the outer circumferential surface of the core part or the inner circumferential surface of the resin part is (2) A press-fitting method in which a rubber pre-formed into a predetermined shape is attached to one side by adhesive or the like, and then the core and the resin part are fitted together. Another method is known, in which the resin part is placed in a predetermined rubber mold and then the rubber is thermoformed between the core part and the resin part.
［発明が解決しようとする問題点〕
上記した従来の方法では、芯部Ｊ３よび樹脂部の両方を
予め成形した後ゴム層を形成するｂのであり、またゴム
層と芯部、特にゴム層と樹脂部とを接合するためにプラ
イマー処理、接着剤！！布などの工程も必要であって、
工数が多大となってコストの上昇を眉いていた。[Problems to be Solved by the Invention] In the conventional method described above, the rubber layer is formed after both the core part J3 and the resin part are formed in advance, and the rubber layer and the core part, especially the rubber layer, are Primer treatment and adhesive to join the resin part! ! Processes such as cloth are also necessary,
They were concerned about the increase in costs due to the large number of man-hours required.
本発明はこの問題点に鑑みてなされたものであり、従来
に比して工数を少なくでき、コストの低減を図ることが
できるゴム層をｂつ成形体の製造方法を提供するらので
ある。The present invention has been made in view of this problem, and it is an object of the present invention to provide a method for manufacturing a molded article having two rubber layers, which can reduce the number of man-hours and reduce costs compared to the conventional method.
［問題点を解決するための手段］
本発明の製造方法は、回転軸となる芯部の外周表面に未
加硫または半加硫のゴム層を形成するゴム層形成工程と
、該ゴム層をちつ該芯部を成形型内に配置し該ゴム層外
周表面と型面との間に形成されたキャピテイに熱硬化性
樹脂を注入して該ゴム層表面に一体的に形成された樹脂
部をもつ成形体を成形する成形工程と、からなり、
該成形工程時の熱により該ゴム層を加硫するようにした
こ°とを特徴とする。[Means for Solving the Problems] The manufacturing method of the present invention includes a rubber layer forming step of forming an unvulcanized or semi-vulcanized rubber layer on the outer circumferential surface of a core serving as a rotating shaft, and a step of forming an unvulcanized or semi-vulcanized rubber layer. A resin part is integrally formed on the surface of the rubber layer by placing the core in a mold and injecting a thermosetting resin into the cavity formed between the outer peripheral surface of the rubber layer and the mold surface. and a molding step of molding a molded body having a molded body having the following characteristics: The rubber layer is vulcanized by heat during the molding step.
本発明の’ＦＪ造方法は、ゴム層形成工程と、成形工程
とからなる。ゴム層形成工程は芯部外周表面にゴム層を
形成する工程である。この芯部は得られる回転体の回転
軸となる部分であり、その材質は金属、樹脂、セラミッ
クなど特にｔ、ＩＩ限されず、切削加工、成形などによ
り所定形状に形成することができる。またその形状は円
柱状、中心孔をもつ円筒状、円板状、リング状などとさ
れ、場合によっては断面多角形状などとすることもでき
る。The 'FJ manufacturing method of the present invention consists of a rubber layer forming step and a molding step. The rubber layer forming step is a step of forming a rubber layer on the outer peripheral surface of the core. The core is a part that becomes the rotation axis of the rotary body obtained, and the material thereof is not limited to T or II, such as metal, resin, ceramic, etc., and can be formed into a predetermined shape by cutting, molding, etc. The shape may be a cylinder, a cylinder with a central hole, a disk, a ring, or the like, and in some cases, it may have a polygonal cross section.
なお、ゴム層との接触面積を大きくして接合強度の向上
を図るために、外周表面部に溝、凹部などを設け、表面
積を大きくすることも好ましい。In addition, in order to increase the contact area with the rubber layer and improve the bonding strength, it is also preferable to provide grooves, recesses, etc. on the outer peripheral surface to increase the surface area.
上記芯部にゴム層を形成するには、たとえば紐状、テー
プ状あるいはシート状などに予備成形され゛たゴムを芯
部外周表面に巻き付けることで形成づることができる。The rubber layer can be formed on the core by, for example, wrapping preformed rubber in the shape of a string, tape, or sheet around the outer peripheral surface of the core.
巻き取られたゴム層の厚さは用途により種々選択できる
。なお、ここでゴムには未加硫または未加ｌｉＩ！ＩＮ
５分が残存する半加硫のものが用いられる。The thickness of the rolled rubber layer can be selected from various values depending on the application. In addition, here, the rubber is unvulcanized or unvulcanized! IN
A semi-vulcanized material with 5 minutes remaining is used.
侵述の成形工程において巻き付けた状態を櫂持するには
、未加硫ゴムよりも形状維持性能に優れた半加硫ゴムを
用いるとよい。また芯部に予めプライマー処理を施した
り、接着剤を塗布したりしておくこともできる。In order to maintain the wrapped state in the above-mentioned molding process, it is preferable to use semi-vulcanized rubber, which has better shape retention performance than unvulcanized rubber. Further, the core portion may be previously treated with a primer or coated with an adhesive.
成形工程はゴム層をもつ芯部を成形型内に配置し、ゴム
層外周表面と型面との間で形成されたキャピテイ内で熱
硬化性樹脂を硬化させて樹脂部を成形する工程である。The molding process is a process in which a core with a rubber layer is placed in a mold, and the thermosetting resin is cured within the cavity formed between the outer peripheral surface of the rubber layer and the mold surface to mold the resin part. .
樹脂部を成形するには射出成形、トランスファー成形、
圧縮成形などの方法を利用することができる。またｔｔ
人正圧力型締め圧力なども通常の樹脂成形時と同等の条
件で行なうことができる。なお、ゴ１１層、樹脂部の肉
厚を均一にするためには、樹脂部はゴム層の外周面で均
一に流動する必要がある５、従ってトランスファー成形
、射出成形などにより成形する場合には、外周方向から
のディスクゲート、あるいは多点のピンポイントグー１
〜な、−・どの構造の成形型を用いることが望ましい。To mold the resin part, injection molding, transfer molding,
Methods such as compression molding can be used. Also tt
Manual pressure and mold clamping pressure can also be carried out under the same conditions as in normal resin molding. In order to make the thickness of the rubber layer and resin part uniform, the resin part needs to flow uniformly on the outer peripheral surface of the rubber layer5. Therefore, when molding by transfer molding, injection molding, etc. , disc gate from the outer circumferential direction, or multi-point pinpoint goo 1
It is desirable to use a mold having the following structure.
樹脂にはフェノールｓ１脂、」−ボ１−シ樹脂などの熱
硬化性樹脂を用いることができる。そして本発明の最大
の特徴は、成形工程時の加熱によりこの熱硬化性樹脂を
硬化させるとともにゴム層を加硫するＪ二うにしたとこ
ろにある。As the resin, thermosetting resins such as phenol s1 resin and ``-bodi resin'' can be used. The most important feature of the present invention is that the thermosetting resin is cured and the rubber layer is vulcanized by heating during the molding process.
［作用］
本発明のｙＪ造方法では、成形工程時の熱ににり芯部に
巻き取られたゴム層が加硫され、芯部に加硫接省して一
体化Ｊる。さらに型内に注入された樹脂は成形型内で成
形圧力により流動し、ゴム層を外周面側より芯部外表面
に押圧するので、ゴム層は芯部に圧着される。これによ
り芯部とゴム層との接合強度がさらに向上する。またゴ
ムは一般に収縮率が大きいので、樹脂の押圧にＪ：り生
じた内部応力は収縮により吸収され加硫後のゴム層に内
部応力が残らない。[Function] In the YJ manufacturing method of the present invention, the rubber layer wound around the core is vulcanized by the heat during the molding process, and is vulcanized and bonded to the core to be integrated. Furthermore, the resin injected into the mold flows within the mold due to molding pressure and presses the rubber layer against the outer surface of the core from the outer peripheral surface side, so that the rubber layer is crimped onto the core. This further improves the bonding strength between the core and the rubber layer. Further, since rubber generally has a large shrinkage rate, the internal stress generated by pressing the resin is absorbed by the shrinkage, and no internal stress remains in the rubber layer after vulcanization.
［発明の効果］
本発明の製造方法によれば、ゴム層の７Ｊｌ硫と樹脂部
の成形とを同時に行なうことができる。従って従来に比
ベニ程を短縮化゛りることができ、コストの低減を図る
ことができる。また従来ゴム層と樹脂部との接合はプラ
イマー処理、接着ｈ】などによって行なっていたが、本
発明ではゴム層の架橋反応により接合強度に優れた成形
体が１ｇられる。[Effects of the Invention] According to the manufacturing method of the present invention, the 7Jl sulfurization of the rubber layer and the molding of the resin part can be performed simultaneously. Therefore, the time required can be shortened compared to the conventional method, and costs can be reduced. Furthermore, conventionally the rubber layer and the resin part were joined by primer treatment, adhesion, etc., but in the present invention, 1 g of molded product with excellent joint strength is produced by a crosslinking reaction of the rubber layer.
また樹脂は熱硬化性樹脂であるので、ゴム層と樹脂部と
は相互に架橋硬化し接合強度に一層優れるようになる。Further, since the resin is a thermosetting resin, the rubber layer and the resin portion are mutually crosslinked and cured, resulting in even better bonding strength.
［実施例］
以下実施例により具体的に説明する。なお本実施例はプ
ーリの製造に本発明を適用したものである。[Example] The following is a concrete explanation using Examples. In this example, the present invention is applied to the manufacture of a pulley.
（ゴム層形成工程）
第１図に示すＪ、うに、炭素鋼材から切削加工により形
成され、外周表面に円周方向に一周する複数個の満１１
をもつ円筒状の芯部１を用意し、予め紐状に予備成形さ
れた半加硫天然ゴムを主成分とするゴム材料を芯ｔｌｓ
１の外周表面に巻き（・Ｈ）で厚さ約２１１１１のゴ
ム層２を形成した。(Rubber layer forming process) J shown in Fig. 1 is formed by cutting from a carbon steel material, and a plurality of rubber layers are formed around the outer circumferential surface in the circumferential direction.
A cylindrical core 1 with
A rubber layer 2 having a thickness of about 21,111 mm was formed on the outer circumferential surface of the rubber layer 1 by winding (.H).
（成形■桿）
次にゴムＦＩ！Ｊ２をもつ芯部１を成形型３内に配置し
、第２図に示すようにゴム層２と型面とで形成された円
筒状キャピテイ４に、ノボラック型フェノール樹脂（ガ
ラスｌａＮ ５０ ｍｍ％、硬化剤としてへ４二奢１メ
チレンチ］・ラミン７重量％含イｊ）を射出し、成形型
３を１７０℃で８分間保持してフェノール樹脂を硬化さ
せるとともにゴム１４２の加硫を行なった。加硫硬化後
型を開いて成形体を取り出した。得られた成形体は第３
図に示すように、芯部１と、芯部１の外周表面に形成さ
れたゴム層２と、ゴムＷＪ２の外周表面に形成されたフ
ェノール樹脂層りとを右し、ゴム層２は芯ＰｌＳ１の満
１１内を充填して芯部１およびフェノール樹脂ｌｉ！５
と一体的に結合していた。(Molded rod) Next is the rubber FI! The core part 1 having a shape of J2 is placed in a mold 3, and as shown in FIG. A curing agent containing 7% by weight of H42-1 methylene thiol and Ramin was injected, and the mold 3 was held at 170° C. for 8 minutes to cure the phenolic resin and vulcanize the rubber 142. After vulcanization and curing, the mold was opened and the molded product was taken out. The obtained molded body is the third
As shown in the figure, a core 1, a rubber layer 2 formed on the outer peripheral surface of the core 1, and a phenolic resin layer formed on the outer peripheral surface of the rubber WJ2 are shown on the right, and the rubber layer 2 is a core PlS1. Fill the inside of the core 1 and the phenolic resin li! 5
were integrally connected.
図面は本発明の位置実施例の製造方法に係るものであり
、第１図はゴム層形成工程を示し芯部とゴム層の断面図
、第２図は成形工程を行なっている状態を示す成形型の
断面図、第３図は得られた成形体の断面図である。The drawings relate to the manufacturing method of the positional embodiment of the present invention, and FIG. 1 is a sectional view of the core and the rubber layer showing the rubber layer forming process, and FIG. 2 is a sectional view of the core and the rubber layer, and FIG. A cross-sectional view of the mold, and FIG. 3 is a cross-sectional view of the obtained molded body.
Claims (3)
硫のゴム層を形成するゴム層形成工程と、該ゴム層をも
つ該芯部を成形型内に配置し該ゴム層外周表面と型面と
の間に形成されたキャビティに熱硬化性樹脂を注入して
該ゴム層表面に一体的に形成された樹脂部をもつ成形体
を成形する成形工程と、からなり、 該成形工程時の熱により該ゴム層を加硫するようにした
ことを特徴とするゴム層をもつ成形体の製造方法。(1) A rubber layer forming step in which an unvulcanized or semi-vulcanized rubber layer is formed on the outer circumferential surface of the core that becomes the rotating shaft, and the core with the rubber layer is placed in a mold and the rubber layer is formed. a molding step of injecting a thermosetting resin into a cavity formed between the outer peripheral surface and the mold surface to mold a molded body having a resin part integrally formed on the surface of the rubber layer; A method for producing a molded article having a rubber layer, characterized in that the rubber layer is vulcanized by heat during the molding process.
形ゴムを芯部に巻き付けて行う特許請求の範囲第１項記
載のゴム層をもつ成形体の製造方法。(2) The method for manufacturing a molded article having a rubber layer according to claim 1, wherein the rubber layer forming step is performed by winding a string-like or sheet-like preformed rubber around a core.
第２項記載のゴム層をもつ成形体の製造方法。(3) The method for producing a molded article having a rubber layer according to claim 2, wherein the preformed rubber is in a semi-vulcanized state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9858786A JPS62253419A (en) | 1986-04-28 | 1986-04-28 | Manufacture of molded member having rubber layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9858786A JPS62253419A (en) | 1986-04-28 | 1986-04-28 | Manufacture of molded member having rubber layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62253419A true JPS62253419A (en) | 1987-11-05 |
Family
ID=14223776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9858786A Pending JPS62253419A (en) | 1986-04-28 | 1986-04-28 | Manufacture of molded member having rubber layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62253419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008149418A (en) * | 2006-12-19 | 2008-07-03 | Hitachi Koki Co Ltd | Portable belt polishing machine |
-
1986
- 1986-04-28 JP JP9858786A patent/JPS62253419A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008149418A (en) * | 2006-12-19 | 2008-07-03 | Hitachi Koki Co Ltd | Portable belt polishing machine |
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