JPS59123641A - Manufacture of diaphragm having shape-keeping ring buried in fitting flange - Google Patents

Manufacture of diaphragm having shape-keeping ring buried in fitting flange

Info

Publication number
JPS59123641A
JPS59123641A JP7358283A JP7358283A JPS59123641A JP S59123641 A JPS59123641 A JP S59123641A JP 7358283 A JP7358283 A JP 7358283A JP 7358283 A JP7358283 A JP 7358283A JP S59123641 A JPS59123641 A JP S59123641A
Authority
JP
Japan
Prior art keywords
shape
flange
diaphragm
mold
keeping ring
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
Application number
JP7358283A
Other languages
Japanese (ja)
Inventor
Ryuichi Harashima
原島　隆一
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.)
Fujikura Rubber Works Ltd
Fujikura Composites Inc
Original Assignee
Fujikura Rubber Ltd
Fujikura Rubber Works 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 Fujikura Rubber Ltd, Fujikura Rubber Works Ltd filed Critical Fujikura Rubber Ltd
Priority to JP7358283A priority Critical patent/JPS59123641A/en
Publication of JPS59123641A publication Critical patent/JPS59123641A/en
Pending 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/70—Completely encapsulating inserts
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
    • B29C33/123—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels for centering the inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/005—Producing membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/755—Membranes, diaphragms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

PURPOSE:To obtain a diaphragm product suitable for fluid pressure-powered equipments, etc., without forming any aperture during the assembling and application periods by using a system in which a projection is provided on the bottom of a convexed mold with a cavity for molding a flange and a shape-keeping ring is positioned with a spacing from the bottom of the mold. CONSTITUTION:A projection (d) to position a shape-keeping ring 3 is provided on the bottom (c) of a convexed mold with a cavity for forming the flange 2 of molds (a) and (b) in which a diaphragm having a thick flange 2 around a fitting portion is molded by heating under pressure. A concaved portion 4 corresponding to the projection (d) is formed in the shape-keeping ring 3. The projection (d) and the convexed portion 4 are coupled with each other, the shape- keeping ring 3 is positioned with a spacing from the bottom (c), and the concaved mold (b) is matched with them. A molding rubber is vulcanized under a pressure in the molds to obtain a diaphragm having the shape-keeping ring 3 buried in the thick portion of the flange 2.

Description

【発明の詳細な説明】 本発明は、流体圧力応動機器等に用いるゴム又は合成樹
脂製のダイヤフラムに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diaphragm made of rubber or synthetic resin used in fluid pressure responsive equipment and the like.

この種のダイヤフラム１は、その周囲に肉厚のフランジ
部２を形成し、そのフランジ部を流体圧力系の」１下シ
リンダ５・６間に挾んで締伺固定するものであるが、気
密に締付ける関係上その締付力でフランジ部２が変形す
るおそれがある。またダイヤフラム１は加圧側と非加圧
側との間を頻繁に往復運動するため、その取付部に常時
反転的な力が加わり、フランジ部に歪み・しわ等の変形
を生じ流体が洩れて機器の寿命を低下する。This type of diaphragm 1 has a thick flange portion 2 formed around it, and the flange portion is clamped and fixed between the lower cylinders 5 and 6 of the fluid pressure system. Due to the tightening process, the flange portion 2 may be deformed by the tightening force. In addition, since the diaphragm 1 frequently reciprocates between the pressurized side and the non-pressurized side, a reversing force is constantly applied to the mounting part, causing deformation such as distortion and wrinkles in the flange part, causing fluid to leak and damaging the equipment. Reduces lifespan.

そこで特公昭４８−３５０３２号公報開示のようにフラ
ンジ部２の周囲に立ち上りを形成して剛性の保形リング
を嵌めるものであるが、そのリングが離脱しやすい。ま
た別々に作ったものを嵌め合せるものであるから製造・
組立てに手数を要し量産に適しない。さらにまた、フラ
ンジ部の前記変形により保形リングとの間に隙を生ずる
等の欠点がある。Therefore, as disclosed in Japanese Patent Publication No. 48-35032, a rising edge is formed around the flange portion 2 and a rigid shape-retaining ring is fitted therein, but the ring easily comes off. Also, because it is a product that is made separately and fitted together, it is manufactured and
It takes time to assemble and is not suitable for mass production. Furthermore, there is a drawback that the deformation of the flange portion creates a gap with the shape retaining ring.

本発明は、」１記従来のものの問題点を解決したダイヤ
フラムを製造することを目的とする。The object of the present invention is to manufacture a diaphragm that solves the problems of the conventional ones as described in 1.

第１〜４図は本発明による製品を例示するもので、３は
ダイヤフラムｌの周囲の取付用フランジ部２に埋設的に
モールドした硬質の保形リング、８はフランジ部２の外
側面に上方に向って外爪がりの同心状に設けたリップ、
９はフランジ部２のシリンダ５・６とのシール面に環状
に設けた数条のビードである。1 to 4 illustrate the product according to the present invention, in which 3 is a hard shape-retaining ring embedded and molded in the mounting flange 2 around the diaphragm 1, and 8 is an upper part of the outer surface of the flange 2. A concentric lip with an outer claw facing toward the
Numeral 9 designates several beads provided in an annular shape on the sealing surface of the flange portion 2 with the cylinders 5 and 6.

タイヤフラム１の材質としては合成ゴム又はポリウレタ
ン樹脂等の合成樹脂の単体或は補強用基布を積層したも
のを用い、保形リングは金属・合成樹脂等の硬質のもの
を用いる。The tire flam 1 is made of a single synthetic resin such as synthetic rubber or polyurethane resin, or a layered material made of reinforcing base fabric, and the shape-retaining ring is made of a hard material such as metal or synthetic resin.

本発明は」二足のような保形リングを埋設した数句フラ
ンジを持ったタイヤフラムを製造する方法に係り、数句
部の周囲に肉厚のフランジ部２を有するダイヤスラムを
加圧加熱により成形する金型ａ−ｂのフランジ部２を形
成すべきキャピティの凸金型底面Ｃに、保形リング３を
位置決めする突部ｄを設け、その突部に対応する凹部４
を保形リング３に設け、その凹凸部ｄφ４の係合により
保形リング３を前記底面Ｃかも浮かせて位置決めし、凸
金型すを合せて成形用ゴムを加圧加硫することによって
、保形リング３をフランジ部２の肉厚内に包み込み的に
埋設したダイヤフラムを得るものである。The present invention relates to a method for manufacturing a tire flam having a flange with a bipedal shape-retaining ring embedded therein, in which a diaphragm having a thick flange portion 2 around the flange is heated under pressure. A protrusion d for positioning the shape retaining ring 3 is provided on the convex mold bottom surface C of the cavity in which the flange portion 2 of the mold a-b to be formed is to be formed, and a recess 4 corresponding to the protrusion is provided.
is provided on the shape-retaining ring 3, and the shape-retaining ring 3 is positioned so that the bottom surface C is also raised by engaging with the uneven portion dφ4, and the molding rubber is pressure-vulcanized by aligning the convex mold. A diaphragm is obtained in which a shaped ring 3 is wrapped and embedded within the thickness of a flange portion 2.

上記の位置決め用突部ｄをピン形とし保形リング３に対
応孔を設ければ、第２図のようにフランジ部２にピンを
抜いた孔４′が残る。その突部ｄを円形にすれば第４図
のようにフランジ底面にリング状四部７が形成される。If the above-mentioned positioning protrusion d is made into a pin shape and a corresponding hole is provided in the shape retaining ring 3, a hole 4' from which the pin is removed will remain in the flange portion 2 as shown in FIG. If the protrusion d is made circular, four ring-shaped parts 7 are formed on the bottom surface of the flange as shown in FIG.

その突部ｄは先端に向い細くして抜き易くする。The protrusion d is tapered toward the tip to make it easier to pull out.

凹凸の金型ａ−ｂに、外人がりリップ８、同心環状ビー
ド９を形成するための彫り込み凹部ｆ・ｇを設ける。Engraved recesses f and g for forming an outer lip 8 and a concentric annular bead 9 are provided in the uneven mold a-b.

なお、ダイヤフラムｌの中心に孔１０を設けてピストン
ロット 中心孔の周縁にも」−記と同様保形リングを埋設した肉
厚７ランジ部を形成することができる。Incidentally, a hole 10 can be provided in the center of the diaphragm l, and a 7-thickness flange portion with a shape-retaining ring embedded therein can also be formed at the periphery of the piston rod center hole, as in the case of "-".

本発明は、」二足のようにタイヤフラムの加硫金型に僅
かな加工を施すことによって、保形リングをフランジ部
の肉厚内に埋込的に一部モールドしたダイヤフラムが容
易に得られるものである。The present invention provides a diaphragm in which a shape-retaining ring is partially molded into the thickness of the flange portion by slightly processing the vulcanization mold of the tire flammable flange. It is something that can be done.

そしてその製品はフランジ部に保形リングを添着する従
来品に比べて、機器に対する組付手数を省略して工費を
低減する。組付時、使用時にフランジ部との間に隙を生
ずることかなく機器の信頼１ｉ　ｔＩｌ）ｌ久性を増大
する等の効果がある。Compared to conventional products in which a shape-retaining ring is attached to the flange, this product eliminates the labor involved in assembling equipment and reduces labor costs. This has the effect of increasing the reliability and durability of the device without creating a gap between the flange and the flange during assembly and use.

なお、第３図はダイヤフラム１の外周縁に設けたフラン
ジ部２をシリンダ５・６によって挾んで締（＝Ｊ固定す
るものを示したが、シリンダの内側段部にゴムの弾性復
元力を利用して挿入固定する形式のものにも適用できる
。この場合には、フランジ部２の周面に設けたリップ８
をフランジ部２よりも」１方に突出させて設けても良い
。またビート９はシリンダとのシール面のシール性を向
−１−させる。In addition, although Fig. 3 shows the flange part 2 provided on the outer peripheral edge of the diaphragm 1 being clamped and tightened by the cylinders 5 and 6 (=J fixed), the elastic restoring force of the rubber is used for the inner step part of the cylinder. It can also be applied to a type in which the flange portion 2 is inserted and fixed.In this case, the lip 8 provided on the circumferential surface of the flange portion 2
may be provided so as to protrude toward one side than the flange portion 2. The beat 9 also improves the sealing performance of the sealing surface with the cylinder.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による製品の縦断面図、第２図はその一
部の拡大平面図、第３図はそのタイヤフラムをシリンダ
に取付けた状％Ｊの一部の縦断面図、第４図は他の実施
例の一部の拡大平面図、第５図は本発明方法に用いる加
硫金型の一部の縦断面図である。 ｌはタイヤフラム、２は７ランジ部、３は保形リング、
ａは凸金型、ｂは凸金型、ｄは保形リング位置決め用突
部。Fig. 1 is a vertical cross-sectional view of the product according to the present invention, Fig. 2 is an enlarged plan view of a part thereof, Fig. 3 is a longitudinal cross-sectional view of a part of the tire flam attached to the cylinder, and Fig. 4 The figure is an enlarged plan view of a portion of another embodiment, and FIG. 5 is a longitudinal sectional view of a portion of a vulcanization mold used in the method of the present invention. l is the tire flam, 2 is the 7 lunge part, 3 is the shape retaining ring,
a is a convex mold, b is a convex mold, and d is a shape-retaining ring positioning protrusion.

Claims (1)

【特許請求の範囲】[Claims] （１）凸金型と凹金型により、取付部の周囲に肉厚のフ
ランジ部を形成したダイヤフラムを加圧加熱により成形
するに当り、そのフランジ部を形成すべきキャビティの
凸金型底面に保形リングを位置決めする突部を設け、そ
の突部に対応する四部を保形リングに設け、保形リング
を上記底面から浮かせて位置決めすることによって、前
記フランジ部の肉厚内に保形リングを包み込み的に埋込
んだダイヤフラムの製造方法。(1) When molding a diaphragm with a thick flange around the mounting part by pressure heating using a convex mold and a concave mold, the flange is formed on the bottom of the convex mold of the cavity where the flange is to be formed. By providing a protrusion for positioning the shape-retaining ring, providing four parts corresponding to the protrusions on the shape-retaining ring, and positioning the shape-retaining ring by floating it from the bottom surface, the shape-retaining ring is placed within the thickness of the flange portion. A method for manufacturing a diaphragm that is embedded in a manner that envelops it.
JP7358283A 1983-04-26 1983-04-26 Manufacture of diaphragm having shape-keeping ring buried in fitting flange Pending JPS59123641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7358283A JPS59123641A (en) 1983-04-26 1983-04-26 Manufacture of diaphragm having shape-keeping ring buried in fitting flange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7358283A JPS59123641A (en) 1983-04-26 1983-04-26 Manufacture of diaphragm having shape-keeping ring buried in fitting flange

Publications (1)

Publication Number Publication Date
JPS59123641A true JPS59123641A (en) 1984-07-17

Family

ID=13522436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7358283A Pending JPS59123641A (en) 1983-04-26 1983-04-26 Manufacture of diaphragm having shape-keeping ring buried in fitting flange

Country Status (1)

Country Link
JP (1) JPS59123641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002327849A (en) * 2001-04-27 2002-11-15 Akebono Brake Ind Co Ltd Ring mold type dust boots, its manufacturing method and molding die

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002327849A (en) * 2001-04-27 2002-11-15 Akebono Brake Ind Co Ltd Ring mold type dust boots, its manufacturing method and molding die
JP4531289B2 (en) * 2001-04-27 2010-08-25 曙ブレーキ工業株式会社 Ring mold type dust boot, manufacturing method thereof and mold

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