JPH0259053B2 - - Google Patents
Info
- Publication number
- JPH0259053B2 JPH0259053B2 JP58131051A JP13105183A JPH0259053B2 JP H0259053 B2 JPH0259053 B2 JP H0259053B2 JP 58131051 A JP58131051 A JP 58131051A JP 13105183 A JP13105183 A JP 13105183A JP H0259053 B2 JPH0259053 B2 JP H0259053B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- mold
- semi
- rubber mold
- diaphragm
- 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
- 239000004636 vulcanized rubber Substances 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000000047 product Substances 0.000 description 7
- 230000037303 wrinkles Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
本発明はダイアフラムの製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a diaphragm.
従来からダイアフラムとして、第１図および第
２図に示すように比較的平たく成形されたもの
１，２や、第３図および第４図に示すように軸方
向に大きな段差を備えたもの３，４等諸種の形状
のものが知られているが、これらダイアフラム１
……４には一般に補強用の基布５が埋設されてい
る。この基布５は、該基布５が製品ダイアフラム
の表面（上下面）に露出していると、第１に当該
ダイアフラムが組み付けられるケースやセンター
プレートとの接触摩耗によつて切断され易いこ
と、第２にゴム材と基布が疲労によつて剥離し、
亀裂が入り易いこと、第３に当該ダイアフラムの
使用雰囲気に対してその低圧側に基布を入れるの
が妥当な設計であるため、交番圧力が加わる条件
下での使用に不適切であること等から、製品ダイ
アフラムの表面に露出せず、ゴム材の内部に埋め
込まれた状態、すなわち当該ダイアフラムの中央
に配設されるのが望ましい。この点に関し、先に
示した比較的平たく成形されたダイアフラム１，
２（第１図および第２図）は、第５図に示すよう
に、基布５の両面に未加硫ゴムシート１ａ，１ｂ
をトツピングしたものを加硫することによつて容
易に基布５をダイアフラムの中央に位置せしめる
ことができる。図中６は上ゴム型、７は下ゴム型
である。これに対して第３図および第４図に示し
た段差の大きいダイアフラムを同様な方法によつ
て製すると（第６図参照）、基布５に皺が発生し、
基布位置が均一でなくなるばかりか、正常な製品
を得ることができない問題点があつた。またこの
基布５に皺が生じることを防止するため、第７図
に示すように、予備成形した基布５を、あらかじ
め上下ゴム型６，７で半加硫にして下ゴム型７に
粘着させたゴム材４ｂ上に配置し、その上に未加
硫ゴムシート４ａを載せて加硫する方法もある
が、この方法によると前記ゴム材４ｂの厚さがす
でに製品ダイアフラム４の膜厚に近似してしま
い、また半加硫状態のゴム材４ｂと未加硫ゴムシ
ート４ａとの特性が異なつてしまうといつた欠点
を残しており、基布５をダイアフラム３，４の中
央に配置することは依然として困難であつた。 Conventionally, diaphragms have been formed into relatively flat shapes 1 and 2 as shown in FIGS. 1 and 2, and diaphragms 3 with a large step in the axial direction as shown in FIGS. 3 and 4. Diaphragms of various shapes such as 4 are known, but these diaphragms 1
... 4 is generally embedded with a reinforcing base fabric 5. If the base fabric 5 is exposed on the surface (upper and lower surfaces) of the product diaphragm, firstly, it is likely to be cut due to contact wear with the case or center plate in which the diaphragm is assembled; Second, the rubber material and base fabric peel off due to fatigue.
Third, it is inappropriate for use under conditions where alternating pressure is applied, as it is a reasonable design to insert a base fabric on the low pressure side of the diaphragm in the operating atmosphere. Therefore, it is preferable that it is not exposed on the surface of the product diaphragm but is embedded inside the rubber material, that is, disposed in the center of the diaphragm. In this regard, the relatively flat shaped diaphragm 1 shown above,
2 (FIGS. 1 and 2), as shown in FIG.
By vulcanizing the topping, the base fabric 5 can be easily positioned at the center of the diaphragm. In the figure, 6 is an upper rubber mold, and 7 is a lower rubber mold. On the other hand, if the diaphragm with a large step shown in FIGS. 3 and 4 is manufactured by the same method (see FIG. 6), wrinkles will occur in the base fabric 5.
There was a problem that not only the position of the base fabric was not uniform, but also a normal product could not be obtained. In order to prevent wrinkles from forming on the base fabric 5, as shown in FIG. There is also a method of placing the rubber material 4b on the rubber material 4b and placing the unvulcanized rubber sheet 4a thereon and vulcanizing it. The base fabric 5 is placed in the center of the diaphragms 3 and 4 because they are approximated, and the characteristics of the semi-vulcanized rubber material 4b and the unvulcanized rubber sheet 4a are different. Things remained difficult.
本発明は以上の点に鑑み、ダイアフラムを成形
する型を上中下の３枚割構造として各型間に形成
される上下２個所のキヤビテイの各各に半加硫ゴ
ムを流し込み、該半加硫ゴムを上ゴム型と下ゴム
型に粘着させた状態で中ゴム型のみを取り外し、
その後、上下の半加硫ゴムの間に基布を挾んで加
硫することにより、容易に、該基布を製品ダイア
フラムの中央に配置せしめるダイアフラムの製造
方法を提唱し、上記従来法におおける問題点を一
挙に解消せんとするものである。すなわち本発明
方法によれば、３枚割の各型の間に形成される上
下キヤビテイの各各に半加硫ゴムを流し込むこと
によつて、最終の製品形状を二分割した形状を、
半加硫ゴム材料をもつて形成し、ついで両半加硫
ゴム部分の間に基布を挿入して完全に加硫する手
順としたため、その後の加流工程等において基布
に皺が寄ることがなく、精巧な基布中央品を製作
できるのみでなく、上下半加硫ゴムの特性が異な
ることもなく、耐久性および汎用性に優れたダイ
アフラムを提供することができる。さらに本発明
は前記工程途中において離脱せしめられる中ゴム
型を、半加硫ゴムが粘着しがたい材質をもつて製
するか、あるいはテフロンコーテイング等によつ
て半加硫ゴムが粘着しがたい状態に表面処理した
ことを特徴とするものである。これにより、該中
ゴム型を離脱させる際に、上下キヤビテイ内に在
る半加硫ゴムを中ゴム型の動きに追従させること
なく、確実にキヤビテイ内に残すことができる。 In view of the above points, the present invention has been developed by dividing a mold for forming a diaphragm into three pieces into upper, middle and lower parts, and pouring semi-vulcanized rubber into each of the two upper and lower cavities formed between each mold. With the sulfur rubber attached to the upper and lower rubber molds, remove only the middle rubber mold.
Then, by sandwiching the base fabric between upper and lower semi-vulcanized rubber and vulcanizing it, we proposed a method for manufacturing a diaphragm in which the base fabric could be easily placed in the center of the product diaphragm. The aim is to solve the problems all at once. That is, according to the method of the present invention, by pouring semi-vulcanized rubber into each of the upper and lower cavities formed between the three molds, the final product shape can be divided into two parts.
Because the process was to form a semi-vulcanized rubber material, then insert a base fabric between the two semi-vulcanized rubber parts and completely cure it, the base fabric may wrinkle during the subsequent vulcanization process, etc. Not only is it possible to manufacture an elaborate center fabric product without any problems, but also the properties of the upper and lower halves of vulcanized rubber do not differ, making it possible to provide a diaphragm with excellent durability and versatility. Furthermore, the present invention provides that the inner rubber mold, which is removed during the process, is made of a material to which the semi-vulcanized rubber is difficult to adhere, or is coated with Teflon or the like so that the semi-vulcanized rubber is difficult to adhere. It is characterized by surface treatment. Thereby, when the middle rubber mold is removed, the semi-vulcanized rubber present in the upper and lower cavities does not follow the movement of the middle rubber mold, and can be reliably left in the cavity.
つぎに本発明に係るダイアフラムの製造方法の
一実施例を図面にしたがつて説明すると、第８図
において、イは上ゴム型８、中ゴム型９および下
ゴム型１０を型締めした状態を示し上ゴム型８と
中ゴム型９の間に上側キヤビテイ１１、中ゴム型
９と下ゴム型１０の間に下側キヤビテイ１２が形
成されている。この両キヤビテイ１１，１２は後
記手順にしたがつて中ゴム型９を離脱させ、上ゴ
ム型８と下ゴム型１０を直接嵌合させたときに、
両者１１，１２が合体して一のダイアフラムとな
る形状に形成されている。上ゴム型８と下ゴム型
１０の前記キヤビテイ１１，１２を形成する内面
はドライマツテ（ガラスシヨツト）等によつて表
面状態を粗くされ、かつ両キヤビテイ１１，１２
の周縁に当たる位置には断面蟻型の引掛け溝１
３，１４が形成され、後記半加硫ゴム１５ａ，１
５ｂが粘着し易い状態に構成される。他方、中ゴ
ム型９の表面はテフロンコーテイングを施こされ
て半加硫ゴム１５ａ，１５ｂが粘着し難い状態に
構成されている。 Next, an embodiment of the method for manufacturing a diaphragm according to the present invention will be described with reference to the drawings. In FIG. An upper cavity 11 is formed between the upper rubber mold 8 and the middle rubber mold 9, and a lower cavity 12 is formed between the middle rubber mold 9 and the lower rubber mold 10. These cavities 11 and 12 are formed when the middle rubber mold 9 is removed and the upper rubber mold 8 and the lower rubber mold 10 are directly fitted together according to the procedure described later.
Both 11 and 12 are combined to form a single diaphragm. The inner surfaces of the upper rubber mold 8 and the lower rubber mold 10 forming the cavities 11 and 12 are roughened with dry pine (glass shot) or the like, and both cavities 11 and 12 are made rough.
There is a hook groove 1 with a dovetail-shaped cross section at the position corresponding to the periphery of the
3, 14 are formed, and semi-vulcanized rubber 15a, 1 described later is formed.
5b is configured to be easily adhesive. On the other hand, the surface of the middle rubber mold 9 is coated with Teflon so that the semi-vulcanized rubber 15a, 15b does not easily stick to it.
上記構成の型を使用してダイアフラムを製作す
るに際しては、前記上下キヤビテイ１１，１２内
へ半加硫ゴム１５ａ，１５ｂを流し込み、該ゴム
１５ａ，１５ｂが固化した段階で、一旦、型開き
して中ゴム型９を離脱せしめ（第８図ロ）、予備
成形した基布１６の下側の半加硫ゴム１５ｂ上に
載置し、上ゴム型８と下ゴム型１０を直接嵌合さ
せるように型締めした後（第８図ハ）、加硫する
のであり、かかる手順によつて前述したように耐
久性および汎用性に優れたダイアフラムを製作す
ることができる。なお、前記工程中、中ゴム型９
を離脱させる以前にこれが冷えると、半加硫ゴム
１５ａ，１５ｂが該中ゴム型９に粘着し易くなる
ことがあるため、該中ゴム型９を保温する必要が
あるときには、該中ゴム型９内にヒータ（図示せ
ず）を装着すると有効である。 When manufacturing a diaphragm using the mold with the above configuration, semi-vulcanized rubber 15a, 15b is poured into the upper and lower cavities 11, 12, and once the rubber 15a, 15b has solidified, the mold is opened. The middle rubber mold 9 is removed (FIG. 8B), placed on the semi-vulcanized rubber 15b on the lower side of the preformed base fabric 16, and the upper rubber mold 8 and the lower rubber mold 10 are directly fitted together. After the mold is clamped (FIG. 8C), it is vulcanized, and as described above, a diaphragm with excellent durability and versatility can be manufactured by this procedure. In addition, during the above process, the middle rubber mold 9
If the semi-vulcanized rubber 15a, 15b cools down before being removed, the semi-vulcanized rubber 15a, 15b may tend to stick to the inner rubber mold 9. Therefore, when it is necessary to keep the inner rubber mold 9 warm, It is effective to install a heater (not shown) inside.
本発明は以上説明したような方法によつて、従
来とくに困難とされていた、段差の大きいダイア
フラムの基布中央品を製作できるようにしたもの
であつて、その効果はきわめて顕著である。 The present invention makes it possible to manufacture a base cloth center piece of a diaphragm with a large step difference, which has been considered particularly difficult in the past, by the method described above, and its effects are extremely remarkable.
第１図ないし第４図はダイアフラムの半裁断面
図、第５図ないし第７図は従来のダイヤフラム製
造方法を示す型と成形品の半裁断面図、第８図は
本発明の一実施例に係るダイアフラム製造方法の
手順を示す型と成形品の半裁断面図である。
１，２，３，４……ダイアフラム、５，１６…
…基布、６，８……上ゴム型、７，１０……下ゴ
ム型、９……中ゴム型、１１，１２……キヤビテ
イ、１３，１４……引掛け溝、１５ａ，１５ｂ…
…半加硫ゴム。
1 to 4 are half-cut sectional views of a diaphragm, FIGS. 5 to 7 are half-cut sectional views of a mold and molded product showing a conventional diaphragm manufacturing method, and FIG. 8 is a half-cut sectional view of a diaphragm according to an embodiment of the present invention. FIG. 3 is a half-cut sectional view of a mold and a molded product showing the steps of a diaphragm manufacturing method. 1, 2, 3, 4... diaphragm, 5, 16...
...Base fabric, 6, 8... Upper rubber mold, 7, 10... Lower rubber mold, 9... Middle rubber mold, 11, 12... Cavity, 13, 14... Hooking groove, 15a, 15b...
...Semi-vulcanized rubber.
Claims (1)
て３枚割構造とし、前記上ゴム型と前記中ゴム型
の間および前記中ゴム型と前記下ゴム型の間に形
成される上下のキヤビテイに半加硫ゴムを流し込
んで、該半加硫ゴムを前記上ゴム型と前記下ゴム
型に粘着させた後、型を開いて前記中ゴム型を離
脱させ、前記半加硫ゴムの間に基布を入れて前記
半加硫ゴムを加硫し、前記基布を製品ダイアフラ
ムの中央に配置せしめることを特徴とするダイア
フラムの製造方法。 ２ 中ゴム型を、半加硫ゴムが粘着しがたい材質
をもつて製したことを特徴とする特許請求の範囲
第１項記載のダイアフラムの製造方法。 ３ 中ゴム型を、テフロンコーテイング等によつ
て半加硫ゴムが粘着しがたい状態に表面処理して
なることを特徴とする特許請求の範囲第１項記載
のダイアフラムの製造方法。[Scope of Claims] 1. A middle rubber mold is interposed between an upper rubber mold and a lower rubber mold to form a three-piece structure, and between the upper rubber mold and the middle rubber mold, and between the middle rubber mold and the lower rubber mold. After pouring semi-vulcanized rubber into the upper and lower cavities formed between the rubber molds and adhering the semi-vulcanized rubber to the upper rubber mold and the lower rubber mold, open the mold and insert the middle rubber mold. A method for manufacturing a diaphragm, which comprises separating the semi-vulcanized rubber, inserting a base fabric between the semi-vulcanized rubber, vulcanizing the semi-vulcanized rubber, and arranging the base fabric at the center of a product diaphragm. 2. The method of manufacturing a diaphragm according to claim 1, wherein the medium rubber mold is made of a material to which semi-vulcanized rubber is difficult to adhere. 3. The method for manufacturing a diaphragm according to claim 1, characterized in that the medium rubber mold is surface-treated by Teflon coating or the like to make it difficult for semi-vulcanized rubber to stick to it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131051A JPS6024931A (en) | 1983-07-20 | 1983-07-20 | Manufacture of diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58131051A JPS6024931A (en) | 1983-07-20 | 1983-07-20 | Manufacture of diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6024931A JPS6024931A (en) | 1985-02-07 |
| JPH0259053B2 true JPH0259053B2 (en) | 1990-12-11 |
Family
ID=15048861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58131051A Granted JPS6024931A (en) | 1983-07-20 | 1983-07-20 | Manufacture of diaphragm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6024931A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1290397B1 (en) * | 1996-09-10 | 1998-12-03 | Sigom S R L | PROCEDURE FOR THE PRODUCTION OF RUBBER MEMBRANES WITH TEXTILE INSERT FOR VEHICLE BRAKING SYSTEMS. |
| KR100563380B1 (en) * | 2003-08-18 | 2006-03-28 | 대웅알티 주식회사 | Diaphragm forming equipment of fabric reinforcement rubber goods |
| KR100689964B1 (en) * | 2006-06-21 | 2007-03-08 | 박장원 | Method for manufacturing crosslinked foam |
-
1983
- 1983-07-20 JP JP58131051A patent/JPS6024931A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6024931A (en) | 1985-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2744340A (en) | Footwear and methods of making the same | |
| US4038014A (en) | Lens mold | |
| JPH03104799A (en) | Manufacture of composite material blade | |
| US4266750A (en) | Device for manufacturing boots and the like of elastomeric material | |
| JP7563876B2 (en) | Manufacturing of elastomeric parts by duplication based on reference standard models | |
| EP0105917A1 (en) | Outsole | |
| JPH0259053B2 (en) | ||
| US8944795B2 (en) | Mold release sheet | |
| JP3280700B2 (en) | Manufacturing method of laminated rubber products | |
| US4069000A (en) | Mold for shaping and curing reinforced plastic material | |
| FI59551B (en) | FREQUENCY REQUIREMENT FOR FRAMING OF PNEUMATIC SHEET | |
| US3193425A (en) | Edge bonding of conveyor belts | |
| US2335139A (en) | Manufacture of rubber articles | |
| JPH0118335Y2 (en) | ||
| JPS6030541B2 (en) | Air bladder manufacturing method | |
| US1853894A (en) | Method of making bathing caps and the like | |
| JPH07137158A (en) | Manufacture of decorative lens made of synthetic resin with embedded decorative object | |
| JP3810910B2 (en) | Resin molding method using split mold | |
| JPS6134100Y2 (en) | ||
| JP2676546B2 (en) | Hollow paddy wheel manufacturing method | |
| JP3220935B2 (en) | Manufacturing method of plastic heel with leather grain mark | |
| JPH0768581A (en) | Manufacture of frp molded product with pattern | |
| JP2002264141A (en) | Mold for molding cloth-containing diaphragm | |
| JPS62172902A (en) | Production of rubber boots | |
| JPH0245578B2 (en) | SEIKEITENSHAHOHO |