JPS583848A - Molding of bladder - Google Patents

Abstract

PURPOSE:To manufacture a bladder of high dimensional accuracy, by making a cut on the bladder molded by using a core and taking out the core through the cut, then jointing the cut by using a partial core enabled to take out from a port. CONSTITUTION:A ring like groove 9 for positioning shaped at a cylindrical part 8 of a core 7 is fitted to a groove 10 provided on a parting face of an upper mold 5 and a lower mold 6 and an unvulcanized rubber 1' is filled in a space shaped between the core and the upper and lower molds 5, 6. The rubber 1' is vulcanized and also an unvulcanized part P' is formed by circulation of cooling water in cooling parts 13, 14, then the molds 5, 6 are opened, a combined body of the core 7 and the rubber 1' is taken out and a cut 17 being made at the unvulcanized part P' opposing to a port 3, the core 7 is taken out. After an adhesive is applied to the cut 17, a combined body of a port metal part 20 and a partial core 19 is inserted into a bladder 1 from the cut 17, also the port metal part 20 is fitted to the port 3, the core 19 is contacted to an inner face of the bladder 1 near the cut 17, the molds 5, 6 are fitted, a compressed air is introduced into the bladder 1 through an air supply hole 32 and the bladder 1 is pressed to an inner face of the molds 5, 6, then vulcanized by heating and also the cut 17 is adhered.

Description

【発明の詳細な説明】 本発明は蓄圧器等に使用するための口径の小さいブラダ
（ゴム袋）Ｏ成鯵方法Ｗｃ＠する−ので、中子のＩＩＬ
出しや中子取出用切目の接合等の成形作業を確実容易に
すると共に、寸法形状のばらつき防止を目的としている
。DETAILED DESCRIPTION OF THE INVENTION The present invention is a method for forming a small diameter bladder (rubber bag) for use in a pressure accumulator, etc.
The purpose is to reliably facilitate molding operations such as joining of cuts for ejecting and core removal, and to prevent variations in size and shape.

一般に蓄圧Ｉ！（アキュムレータ）のブラダ社第１図の
ように外径Ｄ（対し口径ｄが小さく　（Ｄ／ａ≧ゴムＯ
破断伸び率）、ゴムブラダを成形する場合、成形後ブラ
ダの中から中子を取に出す方法が技術的、経済的にむず
かしい、＠１図のブラダｌは外径りが例えは２５０〜３
００ｇの中空球体で、伸縮性を有するゴム又はゴム状弾
性体（熱可塑性樹脂等）でできており、一体の口筒Ｉ１
２により狭い口３が形成されている。このような形状の
ブラダ１を造る場合、従来は１１１１図［１１１Ａ−ム
（又は線に−Ａ’　）で示される面で２分割した形状の
左右（又唸上下）の半体を個別に上下型で加硫成形し、
得られた左右（又は上下）の半体をＡ−Ａ線（又は線Ａ
′−に）の部分で接着剤により接合している。In general, pressure accumulation I! As shown in Figure 1 of Bladder (accumulator), the outer diameter D (in contrast, the diameter d is small (D/a ≧ rubber O
When molding a rubber bladder, it is technically and economically difficult to take out the core from the bladder after molding.The outer diameter of the bladder l in Figure 1 is, for example, 250~3.
00g hollow sphere made of stretchable rubber or rubber-like elastic material (thermoplastic resin, etc.), with an integral mouthpiece I1
2 forms a narrow opening 3. When manufacturing a bladder 1 having such a shape, conventionally, the left and right (or upper and lower) halves of the shape divided into two by the plane shown in Fig. Vulcanized and molded in a mold,
The obtained left and right (or upper and lower) halves are drawn along line A-A (or line A
′-) are joined with adhesive.

ところがその場合は完全く２分剤された左右（又は上下
）の半体を正ｄＩＩＫ突合せて接合する作ｌＩＫ熟練を
要し、寸法形状にばらつきが生じやす＾。However, in that case, it requires skill to join the left and right (or top and bottom) halves, which have been completely divided into two halves, by directly abutting them, and variations in size and shape are likely to occur.

又接合部分が全局にわ九るため接合不良による気密漏れ
の可能性も多くなりやすい、この対策として球状の中子
を採用してブラダを一体的に加硫成形し、中子を突き−
したり溶かして除去する方法も考えられるが、その場合
は中子の取出しに手間が掛かる。In addition, since the joint part is warped all over, there is a high possibility of air leakage due to poor jointing.As a countermeasure to this, a spherical core is used, the bladder is integrally vulcanized, and the core is pierced.
It is possible to remove the core by washing or melting it, but in that case, it takes time to remove the core.

本発明は中子を用いてブラダを一体的に加硫成形した後
、できたブラダ（中子取出用の切目を入れて中子を取り
出し、次に口から取り出しうるサイズの一部中子を用−
て繭記切目を囲むブラダ内面を支持した状態で切目を接
合し、接合後口から−ａ中子を取り出すようにしたこと
を特徴としており、本発明によると中子の取出しゃ切目
の接合が確実容易になるばかりでなく、切目は部分的に
設けであるため切目の接合時にブラダの形状が自動的（
当初の一体成形時の形状に収奴し、寸法精度の高いブラ
ダを簡単和製造することができる。In the present invention, after integrally vulcanizing and molding a bladder using a core, the resulting bladder (a cut for taking out the core is made and the core is taken out, and then a portion of the core of a size that can be taken out from the mouth) is removed. For -
The invention is characterized in that the incisions are joined while the inner surface of the bladder surrounding the cocoon incisions is supported, and the -a core is taken out from the opening after joining.According to the present invention, when the core is taken out, the incisions are joined together. Not only does this make it easier, but since the cuts are made partially, the shape of the bladder will automatically change when joining the cuts.
It is possible to easily manufacture a bladder with high dimensional accuracy by converging to the original shape when integrally molded.

次に図面により本発明を説明する。Next, the present invention will be explained with reference to the drawings.

第２図の上型５と下型ｉは線Ｂ−Ｂで示す合せ面の部分
で圧接し、球形中子７を支持してｉる。The upper die 5 and the lower die i in FIG. 2 are pressed against each other at the mating surfaces shown by line B--B, and support the spherical core 7.

中子７は纏Ｂ−Ｂと同志の円柱ｓＩ＠を一体ｗｃｆａえ
、円柱部８は途中（位置決め眉の環状溝９を有する。The core 7 has a cylinder sI@ which is similar to the matte B-B, and the cylinder part 8 has an annular groove 9 in the middle (positioning eyebrow).

円柱部８は上下型５．６の合せ面く役けた対応する形状
の溝ｌＯに嵌合し、溝１ｏの途中に設けた突起１１と溝
９の嵌合により中子７の位置が規制され、中子７とｈｌ
Ｆｍ５．６の間に一定厚さの空間が形成され、この空間
に未加硫のゴムｆが充填されるようにｔＪってｈる。Ｅ
下型５．６は内部に？−−４（図示せず）を備え、この
ヒータによりゴムｆを加硫に適した温度（例えば１３０
〜１８００Ｃ：）ｖｃｔＫＪ亀することができる０円柱
部８で形成されるブラダの口３ｆｃ対向する金型部分Ｐ
を冷却することができるように、合せ面（Ｂ−、Ｂ　）
を挾む近接位１ｔｃ、ゴムｒの外周面に近接してゴムｒ
の略半ＲＷＢ分に水冷部１３．１４が設けである１両水
冷部１３，１４は上下型５．６内に形成され九円水入口
１５はホースを介して水道の蛇口（共に図ある。The cylindrical part 8 is fitted into a correspondingly shaped groove 1O on the mating surface of the upper and lower molds 5.6, and the position of the core 7 is regulated by the engagement of the groove 9 with a protrusion 11 provided in the middle of the groove 1o. , Nakako 7 and hl
A space with a constant thickness is formed between Fm5.6 and tJ is filled so that this space is filled with unvulcanized rubber f. E
Is the lower mold 5.6 inside? --4 (not shown), and the rubber f is heated to a temperature suitable for vulcanization (for example, 130°C) by this heater.
~1800C:) vctKJ Bladder mouth 3fc formed by cylindrical part 8 Opposing mold part P
mating surfaces (B-, B) so that the
1tc at a proximal position sandwiching the rubber r.
A water cooling section 13, 14 is provided approximately half RWB of the water cooling section 13, 14. Both water cooling sections 13, 14 are formed in the upper and lower molds 5.6, and a nine-circle water inlet 15 is connected to a water faucet via a hose (both are shown in the figure).

球形中子７を挾みに１Ｆ型５．６を第２図のようにセッ
トした後、又は型をセットする際、上下型５．６と中子
７のＩの空間に未ＪＪａ硫のゴムｒを充填し、上下型５
．６内０ヒータにょ）ゴムｒを加硫する。そＯ際水冷１
１１３．ＩＩＣ冷却水を流通させる。そうすると水冷ａ
ｌｌ１３，１４近傍ａｉｍ部分Ｆ□温度が加硫温度に達
しなｉためそ０付近のゴムは半円状に未加硫状態で残る
。他の部分の加硫が終了した後、上下ａＳ％６を開き、
中子７とゴムｒ（半成品ブラダ）の結合体を取り出し、
未加硫の半円状部分？’（１１１４図）Ｋ傾斜した切目
１７（バイアスカット）を入れ、この切目１７から中子
７を取り出す、第４図杜中子取出後Ｏ半成品ブラダ単体
の断面図で、切目１７は０３に対向する半円周部分に口
３の中心線を含む水平面内を占めるように設けである。After setting the 1F mold 5.6 with the spherical core 7 between them as shown in Figure 2, or when setting the mold, fill the space between the upper and lower molds 5.6 and the I of the core 7 with non-JJa sulfurized rubber. Fill the upper and lower molds 5
．． 6 out of 0 heater nyo) Vulcanize the rubber r. Water cooling 1
113. Flow IIC cooling water. Then water cooling a
Since the temperature of aim portion F□ near ll13 and 14 does not reach the vulcanization temperature, the rubber near 0 remains unvulcanized in a semicircular shape. After vulcanization of other parts is completed, open the upper and lower aS%6,
Take out the combination of core 7 and rubber r (semi-finished bladder),
Unvulcanized semicircular part? (Fig. 1114) K Make an inclined cut 17 (bias cut) and take out the core 7 from this cut 17. It is provided so that it occupies a horizontal plane including the center line of the mouth 3 in a semicircular portion thereof.

そしてこの切目１７の大きさは、この切目１丁から中子
７を取９出すことができる範囲でできるだけ小さく定め
られて匹る。具体的にはゴムｒの弾性も考慮して半円周
で充分である。１１４図中の矢印Ｃは切目１１から中子
７を取り出す方向を示してｉる。＠４図におｉで半円状
部分Ｐ′内のゴムｒは未加硫状態であるため、切目１７
の両側部分のゴムを圧接し丸状態で再び加硫すれば、加
硫と同時＃Ｃ切目１７をゴムの素材自体でもって接着一
体化することができる。The size of this cut 17 is determined to be as small as possible within the range in which nine cores 7 can be taken out from one cut. Specifically, taking into account the elasticity of the rubber r, a semi-circumference is sufficient. Arrow C in FIG. 114 indicates the direction in which the core 7 is taken out from the cut 11. @ In Figure 4, the rubber r in the semicircular part P' at i is in an unvulcanized state, so the cut 17
By pressing the rubber on both sides and vulcanizing it again in a round state, #C cut 17 can be bonded and integrated with the rubber material itself at the same time as vulcanization.

もちろん１１２図（示す金型（上下型５．６、中子７）
を用いて、半円状部分Ｐ′以外のゴム部分を半加硫状態
に予備成形し、はとんど加硫されてぃなｉ半円状部分Ｐ
１０切目１７から中子を取り出した後、全体を最終的に
加硫成形し、その際切目１７を加硫と同時に接合するこ
ともできる。更に本発明を実施する場合、第２図中の水
冷ＩＥ１３，１４を廃止するか、加硫時に水冷部１３．
１４ＩＣ冷却水を通過させることなく、ゴムで全体を完
全に加硫成形し、できたブラダｌｌＩＣ切目１７を入れ
、切目１７から中子７を矢印Ｃ方向（取り出した後、切
目１７閲に接着剤を塗布し、後述する治具（−一中子）
等を利用して切目１７を圧接した状態で切目１７を接合
するか、又は切目１７間に未加硫ゴムテープを挾み、後
述する治具を用いて切目１７部分を加熱し、切目１７を
接合することもできる。Of course, Figure 112 (showing molds (upper and lower molds 5.6, core 7)
The rubber parts other than the semicircular part P' are preformed into a semi-vulcanized state using
After taking out the core from the tenth cut 17, the whole can be finally vulcanized and the cuts 17 can be joined at the same time as the vulcanization. Furthermore, when carrying out the present invention, the water-cooled IEs 13 and 14 in FIG. 2 may be abolished, or the water-cooled IEs 13.
14 Completely vulcanize the entire IC with rubber without passing cooling water through it, insert the IC cut 17 into the resulting bladder, insert the core 7 from the cut 17 in the direction of arrow C (after taking it out, apply adhesive to the cut 17) Apply and use the jig (-one core) described later.
Either join the cuts 17 with the cuts 17 pressed against each other by using a tool, or sandwich the unvulcanized rubber tape between the cuts 17 and heat the cuts 17 using a jig to be described later to join the cuts 17. You can also.

次（切目１７部分を接合するｌ１１に使用する治具（−
躯中子等）とその使用法を説明する。ＩＦ５図は金属バ
ンドからなる一部中子１９をプラグ１内に装着してブラ
ダＩＫ上下型５．６を被せた状態を示しており、＠６図
は＠５図のｌｌ−１１！ＩＩＫ沿う水平断面図である。Next (Jig used for l11 to join the cut 17 part (-
(such as cores) and how to use them. Figure IF5 shows a state in which a partial core 19 made of a metal band is installed inside the plug 1 and covered with the bladder IK upper and lower mold 5.6, and Figure @6 shows the ll-11 of Figure @5! It is a horizontal cross-sectional view along IIK.

上下型５，６はブラダ１を加硫成形する際に使用した金
型（第２図のもの）をそのまま使用して諮り、を下型５
．６の合せ面に設けた溝１０（口金具２０が密接に嵌合
し、口金具２０の環伏溝２１に溝１Ｇ側の突起１１が嵌
合して口金具２０に対する位置決めが施しである。The upper and lower molds 5 and 6 are made by using the same molds used for vulcanization molding of the bladder 1 (the one in Fig. 2), and the lower mold 5
．． The groove 10 provided on the mating surface of 6 (the cap 20 is closely fitted into the groove 10), and the protrusion 11 on the groove 1G side fits into the annular groove 21 of the cap 20, thereby positioning the cap 20 relative to the cap 20.

口金具２００ブラダｌ内ｅｃＯＩＥ出した端面（凹部２
２と筒状突起２３が設けてあり、金属バンドから成る中
子１９の一端の折曲部２４が凹部２２に嵌合し、中子ｌ
ｓの他端の平担ａ１９３は突起２３１Ｃ当接し、突起２
３に面した平担部１９λにはバンド１９の長手方向に延
びる矩形の窓孔２５（１１７図）が設けてあり、窓孔２
５＃ｃ嵌合したバンド張力調整用横２６にはボルト２７
が螺合している。楔２６の高さＨ８は窓孔２５の高さＨ
，よりやや小さい一宇値であるが、中子１９の円周方向
の幅は口金［２０側の幅Ｈ１からブラダ内側喝の幅Ｈ４
に直線的に増加しており、窓孔２５の縁に接触している
側の側面２８がボルト２７に対し傾斜して、楔２６に幅
Ｈ８〜Ｈ，０変化を与えている。ボルト２７は口金具９
内の孔２９を貫通してお）、ポルトＲ１１３０は口金Ｘ
２０の外端ｆｆ１３１に当接している。ポルト２７は中
央に給気孔３２を備え、給気孔３２虻は゛回転継手３３
を介してホース３４が接続し、ホースＵを通してブラダ
１内に加圧気体を供給できるようになっている。The end surface of the ecOIE inside the mouth fitting 200 bladder L (recess 2
2 and a cylindrical protrusion 23, a bent part 24 at one end of the core 19 made of a metal band fits into the recess 22, and the core l
The flat support a193 at the other end of s contacts the protrusion 231C, and the protrusion 2
A rectangular window hole 25 (Fig. 117) extending in the longitudinal direction of the band 19 is provided in the flat part 19λ facing the band 19.
Bolt 27 on the side 26 for adjusting the band tension fitted with 5#c
are screwed together. The height H8 of the wedge 26 is the height H of the window hole 25.
, the circumferential width of the core 19 is from the width H1 on the base [20 side] to the width H4 on the inside of the bladder.
The side surface 28 on the side contacting the edge of the window hole 25 is inclined with respect to the bolt 27, giving the wedge 26 a width H8 to H,0 change. The bolt 27 is the cap fitting 9
(through the inner hole 29), Porto R1130 has a cap X
It is in contact with the outer end ff131 of 20. The port 27 has an air supply hole 32 in the center, and the air supply hole 32 is a rotary joint 33.
A hose 34 is connected thereto, and pressurized gas can be supplied into the bladder 1 through the hose U.

８４図のように切目１７を設けたブラダ１内に、切目１
７側から口金具２ｏと中子１９の結合体を逆Ｃ方向に差
し込み１口金具２ｏを口３に嵌めると共（中子１９を切
目１７Ｒ辺０ブラダ内面に当て、中子１９で切目１７を
内側から塞ぐ、その時張力調整用楔２６はポルト２７の
先端部（＠６図の右端ａ）に係合させて横２６の小幅の
先端部が第７図のようＫ１ｍ孔２５に嵌まるようにする
１次に口金［２Ｇとブラダｌを下ＩＪ６上に置き、その
上に上型５を被せ、ｍｓ図のようにセットし、引続き給
気孔３２を通してブラダの内部に加圧気体（通常は空気
）を導入し、ブラダｌを上下型５．６の内面に押し付け
、所定の姿勢（保持した後、ボルト頭部３０にスパナを
かけてボルト２７を回し、楔２６を口金具２０側へ引き
寄せる。そうすると模２６の斜面２８が窓孔２５の縁を
矢印り方向（押し、中子１９が切目１７を圃むブラダ内
面を上下型５，６の内面に押し付ける。この状態で切目
１７近傍の未加硫又は半加硫部を加硫して切目１７を接
合する。切目１７０Ｗ４囲に未加硫部を残さない場合は
、切目１７０間に接着剤を嗜布するか、又は未用硫ゴム
テープを挾んだ状態で第５図、＠６図の治具により切目
１７を塞ぐことができる。切目１７の接合が路下すると
、上下型５゜６を開き、横２６からポルト２７を抜き、
口金具２０を外し、引続き口３の部分から中子１９と楔
２６を取９出せばよい。84 In the bladder 1, which has a cut 17 as shown in Fig.
Insert the combination of the cap 2o and the core 19 from the 7 side in the reverse C direction and fit the 1 cap 2o into the mouth 3 (Place the core 19 on the inner surface of the bladder at the cut 17R side 0, and insert the core 19 into the cut 17 At this time, the tension adjustment wedge 26 is engaged with the tip of the port 27 (right end a in Figure 6) so that the narrow tip of the horizontal 26 fits into the K1m hole 25 as shown in Figure 7. First, place the mouthpiece [2G and bladder l on the lower IJ6, cover the upper mold 5 on top of it, set it as shown in the ms diagram, and then inject pressurized gas (usually Introduce air), press the bladder l against the inner surface of the upper and lower molds 5.6, and after holding it in a predetermined posture, apply a wrench to the bolt head 30, turn the bolt 27, and pull the wedge 26 toward the fitting 20 side. Then, the slope 28 of the mold 26 presses the edge of the window hole 25 in the direction of the arrow, and the core 19 presses the inner surface of the bladder, where the cut 17 is formed, against the inner surface of the upper and lower molds 5, 6. In this state, the blank near the cut 17 is pressed. Vulcanize the vulcanized or semi-vulcanized part to join the cut 17. If no unvulcanized part is left around the cut 170W4, spread adhesive between the cuts 170 or use unused vulcanized rubber tape. In the sandwiched state, the cut 17 can be closed using the jig shown in Figures 5 and 6. Once the cut 17 has been joined, the upper and lower molds 5°6 are opened, and the port 27 is pulled out from the side 26.
All you have to do is remove the cap 20 and then take out the core 19 and wedge 26 from the opening 3.

１１８図、＠９図は別の治具構造を示しており、水平Ｉ
Ｉｒ面を示す１１８１ｍ［＊いて、金属バンドからなる
中子３６は互いに接近した各端１ｓＫ、それぞれ中子３
６の長手方向に延びる２個の長孔３７を備え、各長孔３
７に、はガイド用ねじ３８が嵌まり、は喀８図のように
口金具４２の中央の孔４３に嵌合し、外端に角軸ｗＡ４
４を有する。ねじ３８は口金具４２の孔４５に嵌合し、
先端部は受板４６のねじ孔４７に螺合している。Figure 118, @9 shows another jig structure, with horizontal I
1181m [* showing the Ir surface, the core 36 consisting of a metal band is close to each other at each end 1sK, and each core 3
6, each elongated hole 3 has two long holes 37 extending in the longitudinal direction.
The guide screw 38 is fitted into 7, and the square shaft wA4 is fitted into the center hole 43 of the cap fitting 42 as shown in Fig. 8.
It has 4. The screw 38 fits into the hole 45 of the cap fitting 42,
The tip portion is screwed into a screw hole 47 of the receiving plate 46.

切目接続作業時には、カム４０を６１９図の４０’のよ
うに中子端１ｉ３９に沿う方向に倒した状態で口金具４
２、中子３６、受板４６等の結合体をブラダ１内に嵌め
、ブラダ１に上下型を被せ、給気孔３２からブラダ１内
に加圧気体を導入してブラダ１を上下型内ｍｔｃ押し付
け、型外より角輪部４４をスパナにより９０°回して＠
９図のようにカム４０によや中子３６の端面３９を矢印
り方向に押し広げ、中子３６でもって切目１７（８４図
）の周辺のブラダ内面を上下型内面に押圧する。切目１
７を加硫接着した後は、内部の加圧気体を抜き、カム４
０を４σの姿勢まで倒し、を下型を開き、ねじ３８を＠
８図の矢印Σ方向に抜き、口３から口金具４２．中子３
６、受板４６を取抄出す。During the notch connection work, the cam 40 is tilted down in the direction along the core end 1i39 as shown at 40' in Fig. 619, and the cap fitting 4 is
2. Fit the combined body of the core 36, receiving plate 46, etc. into the bladder 1, cover the bladder 1 with the upper and lower molds, introduce pressurized gas into the bladder 1 from the air supply hole 32, and move the bladder 1 into the upper and lower molds mtc. Press it and turn the corner ring 44 90 degrees from outside the mold with a wrench.
As shown in Fig. 9, the end face 39 of the core 36 is pushed apart in the direction of the arrow by the cam 40, and the inner surface of the bladder around the cut 17 (Fig. 84) is pressed against the inner surface of the upper and lower molds by the core 36. Cut 1
After vulcanizing and adhering cam 7, remove the pressurized gas inside and remove cam 4.
0 to the 4σ position, open the lower mold, and tighten screw 38 @
Pull it out in the direction of arrow Σ in Figure 8, and remove the fitting 42 from the opening 3. Middle child 3
6. Take out the receiving plate 46.

＄１Ｏ図は３分割方式の一部中子を示しており、１方Ｏ
金嘱製心棒４７と、その両側の１対の半円中子４８．４
８を備え、中子４８の一端は切込部４９で噛み合い、そ
の内Ｅ１ｉＫ心棒４７の先端が当接している。中子４８
は他端に３角形断面のスライダ５Ｇ（１１１１図）を一
体に備え、このスライダ５０唸心棒４７ＩＣ設けたガイ
ド溝に摺動自在に嵌合し、心棒４７とスライダ５０はス
リーブ５１内に摺動自在（嵌合し、ス啼−プ５１は下型
６ａと上型（図示せず）Ｏ段付溝５２に挟持されるよう
ＫｆＪっている１段付溝５２０大径１ｉｌａｃはガイド
リング５３がノックビンその他Ｏ回止機構を介して固定
されており、ガイ＃ｌｌング５３内Ｏねじ孔に押し込み
ねじ５４が螺合している。The $1O diagram shows a part of the core of the three-part method, and the one-way O
A metal mandrel 47 and a pair of semicircular cores 48.4 on both sides of the mandrel 47
8, one end of the core 48 is engaged with the notch 49, and the tip of the E1iK mandrel 47 is in contact therewith. Nakako 48
is integrally equipped with a slider 5G (Fig. 1111) having a triangular cross section at the other end, and this slider 50 is slidably fitted into a guide groove provided in a whirlpool spindle 47IC, and the spindle 47 and slider 50 slide inside the sleeve 51. The guide ring 53 has a single stepped groove 520 with a large diameter 1ilac, which is freely (fitted), and the scoop 51 is KfJ so that it is sandwiched between the lower die 6a and the upper die (not shown) O stepped groove 52. It is fixed via a knock bottle or other O-rotation mechanism, and a push screw 54 is screwed into an O-threaded hole in the guy #ll ring 53.

ブラダ１に中子４８を装着した状態でブラダ１にＬ下型
を被せ、給気孔３２から加圧気体を導入した後、ねじ５
４をねじ迅み、ねじ５４によ勢スライダ５０と心棒４７
を矢印Ｆ方向に押すことによ争ブラダ１０切目１７内周
縁を加圧することができる。心棒４７のねじ５４側端面
に対するスライダ５０の突出量を加減することにより、
心棒４７が矢印１方向へ押されるｓＩＫ切目１７に接す
る部分の中子４８の曲率半径を増し、切目１７を全長に
わたり均一（加圧することができる。切目接合後は心棒
４７と中子４８をブラダｌの中から個々（取り出すこと
ができる。With the core 48 attached to the bladder 1, cover the bladder 1 with the L lower mold, introduce pressurized gas from the air supply hole 32, and then tighten the screw 5.
4, and the screw 54 forces the slider 50 and the mandrel 47.
By pushing in the direction of arrow F, the inner peripheral edge of the slit 17 of the bladder 10 can be pressurized. By adjusting the amount of protrusion of the slider 50 with respect to the end surface of the shaft 47 on the side of the screw 54,
The radius of curvature of the core 48 in contact with the sIK cut 17 where the mandrel 47 is pushed in the direction of arrow 1 is increased, and the cut 17 can be uniformly (pressurized) over the entire length. Individual (can be taken out from l).

＠１２図は半円方式を示しておに、剛性バンドからなる
半円中子５６は内１１ｉ１中央Ｓに浅い受筒５７を一体
に備え、受ｍｓｒ内に金属製の中空心棒５８の先端が嵌
合している。心棒５８の雄ねじ部５９はガイドリング６
０に螺合し、ガイドリング６０は下型６にと上型０合せ
ａにＷｋ成した段付溝６１にノックピンその他Ｏ回止機
構を介して挾持すｔＬ　”Ｃｒ　ル＊　心棒５８０６角
ｇｆｌＡ６２ＦＪ、、下型６により外方へ突出して念シ
、先端にニップｋｆ６３が設けである。６４はスプリン
グワッシャ、６５は空気吐出孔である。Figure @12 shows a semicircular system, in which a semicircular core 56 made of a rigid band is integrally equipped with a shallow receiver 57 at the center S of the inner 11i1, and the tip of a hollow metal rod 58 is placed inside the receiver msr. are mated. The male threaded portion 59 of the mandrel 58 is connected to the guide ring 6
0, and the guide ring 60 is clamped in the stepped groove 61 formed on the lower mold 6 and the upper mold 0 through a dowel pin or other O-rotation mechanism. , a nip kf 63 is provided at the tip of the lower die 6 to protrude outward. 64 is a spring washer, and 65 is an air discharge hole.

切目の加硫接着前に心棒５８を矢印Ｆ方向へ押し迅み、
半円中子５６によシ切目内周縁を上下型内面（加圧する
。切目接着後には、ブラダの口かに、半円中子５６を８
１３図の如く両端にヒンジ＠Ｇ、６７を有する弓形コネ
クタ６８を介して心棒５８につないだシ、＠１４図のよ
うに、更に別のコネクタ６９を介在させることもできる
。７０はヒンジである。Before the cut is vulcanized and bonded, push the mandrel 58 in the direction of arrow F,
Pressure is applied to the inner periphery of the cut by the semicircular core 56 on the inner surface of the upper and lower molds. After the cut is glued, place the semicircular core 56 at
As shown in Fig. 13, it is connected to the mandrel 58 via an arcuate connector 68 having hinges @G, 67 at both ends, and as shown in Fig. 14, another connector 69 may be interposed. 70 is a hinge.

以上説明したように本発明にお−ては、Ｌ下型と中子に
よシロの狭いブラダを成形した後ブラダを上下型から取
り出し、０和対向する部分に中子ＷＬａ用の切目を入れ
て中子を取り出し、その後へ一部中子を入れて切目を囲
むブラダ内面を支持し良状態で切目を接合し、引続き口
から一部中子を取）出すようにしたので、加硫温度に耐
える金祠製の中子を採用した場合にも、中子の取出しが
確実容＃Ｉになるばかシでなく、ブラダは中子取出用の
切目以外の部分で接続している丸め、切目を接合する際
にブラダを所定の形状に保ちやすく、寸法形状の正確な
ブラダを濶単に製造することができる。切目Ｏ＃ＩＩ辺
円周部を支持する一部中子は、切目接合後にブラダの狭
い口から取シ出すことができ、しかもブラダ自体が柔軟
なゴム又はゴム状弾性体でできている丸め、ブラダを変
形させたシ傾けることによシ一部中子の取出作業は極め
て簡単になる。As explained above, in the present invention, after molding a narrow bladder with the L lower mold and the core, the bladder is taken out from the upper and lower molds, and a cut is made for the core WLa in the part facing the zero sum. After that, some of the core was put in to support the inner surface of the bladder surrounding the cut, and the cut was joined in good condition, and then some of the core was taken out from the opening, so the vulcanization temperature Even if a core made of metal that can withstand It is easy to keep the bladder in a predetermined shape when joining the parts, and it is possible to easily manufacture a bladder with accurate dimensions and shape. A part of the core supporting the circumference of the cut O#II side can be taken out from the narrow opening of the bladder after the cut is joined, and the bladder itself is made of flexible rubber or rubber-like elastic material. By tilting the bladder in a deformed manner, the work of removing a part of the core becomes extremely easy.

なおブラダの切目を接合する際ブラｒ本体ｏ加硫成形用
上下型５．６を利用せずに、一部中子のみを用いて作業
を進めてもよい、そのや合は切目部分を加硫接着するた
めに、ブラダを介して一部中子を締め付けるようにバン
ドヒータを装着することかで龜る。又本発明によると円
筒形その他線形以外のブラダも製造することができる。In addition, when joining the notches of the bladder, it is possible to proceed with the work by using only the core in part without using the bladder r body o upper and lower molds for vulcanization molding. In order to bond with sulfur, a band heater must be attached to partially tighten the core through the bladder. Cylindrical and other non-linear bladders can also be manufactured according to the invention.

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

第１図は本発明により製造されるブラダ（ゴム袋）の垂
直断面図、第２図は金型の垂直断面図、第３図は１１２
図の厘−ｌ断面図、１１４図は１１２図の金型で製造し
たブラダに切目を入れて中子を取り出した状態を示す垂
直断面図、第５図は切目接合用の一部中子を示す垂直断
面図、１１６図は１１５図のＷ−ｌ断面図、１１７図は
１１６図中〇一部中子の部分斜視図、第８図は別の一部
中子を示す水平断面部分図、＠９図は＠８図の１ｌ−Ｉ
Ｉ矢視図、第１０図は更に別の一部中子を示す斜視図、
ＩＩＩ　１図は＠１０図中の半円中子単体の部分斜視図
、第１２図は更に別の一部中子を示す斜視図、第１３図
、＠１４図は別の２例を示す斜視図である。・′１−・
ブラダ、３・・・口、５・・・上型、６・・・下型、７
・・・中子、１７・・・切目、１９・・・一部中子第３
図 第１．３図 第７４図Fig. 1 is a vertical sectional view of a bladder (rubber bag) manufactured according to the present invention, Fig. 2 is a vertical sectional view of a mold, and Fig. 3 is a 112
Fig. 114 is a vertical sectional view showing a state in which a core is taken out after making cuts in the bladder manufactured using the mold shown in Fig. 112, and Fig. 5 shows a part of the core for joining the cuts. Fig. 116 is a sectional view taken along the W-l line in Fig. 115, Fig. 117 is a partial perspective view of a part of the core in Fig. 116, and Fig. 8 is a partial horizontal sectional view showing another part of the core. Figure @9 is 1l-I of Figure @8
I arrow view, FIG. 10 is a perspective view showing another part of the core,
III Figure 1 is a partial perspective view of a single semicircular core in Figure @10, Figure 12 is a perspective view of another part of the core, Figures 13 and @14 are perspective views of two other examples. It is a diagram.・′1−・
Bladder, 3...mouth, 5...upper mold, 6...lower mold, 7
...core, 17... cut, 19... part of core 3rd
Figure 1.3 Figure 74

Claims (1)

【特許請求の範囲】[Claims] を下型と中子により口の狭いブラダを成形した畿ブラダ
を上下型から取抄出し、口に対向する、部分に中子取出
用の切目を入れて中子を取り出し、その後へ一部中子を
入れて切目を囲むブラダ内面を支持した状態で切目を接
合し、引ｔｉｅき口から一部中子を取り出すようにした
ことを特徴とするブラダの成形方法。A narrow-mouthed bladder is formed using the lower mold and the core, and the bladder is removed from the upper and lower molds, a cut is made for the core to be taken out in the part facing the mouth, and the core is taken out. A method for molding a bladder, characterized in that the cut is joined in a state in which a core is inserted and the inner surface of the bladder surrounding the cut is supported, and a portion of the core is taken out from a tie opening.