JP3628754B2 - Rubber weir manufacturing method - Google Patents

Description

【００１８】
ゴム堰の製造方法は、先ず、ゴム堰の要求にあった物性の、例えば表１に示した配合の未加硫ゴム（Ｗ＝３ｍ、ｔ＝１ｍｍ、Ｌ＝堰の長さ）に、該ゴムとの接着を良くする為に接着剤液にディップ処理をした帆布等の補強材を入れた、所謂補強材入り未加硫のゴムシートを、例えば４枚ほど順に積層した後にこれを加硫するが、この時に前述のごとく予め段差形状になるようにゴムとの離型性の良いオックス帆布４を挟み込んだ後に加硫し、加硫ゴムのオックス帆布を剥し段差を持ったゴム堰分割体を得る。（図３参照）
【００１９】
次に、本発明の第２のポイントは、上記のようにして得られた各ゴム堰の本体分割体同志を互いに段差に嵌合すべく、補強帆布材入りの加硫ゴムシート、或は未加硫ゴムシート及び表１に示したように、本体ゴムよりも硫黄量が１〜５ｐｈｒ多く配合した接着用シートを対応するゴム堰本体段差部に合わせて積層し、加硫接着する。（図４、５参照）
【００２０】
【発明の効果】
上記に詳細を示した様に、本発明により、まず第１に、例えば、上述のごとく従来工数の掛かっていた接着面を広くすべく段差等を設けようとする工程において、例えば従来は剥ぎ取りの力が１５Ｋｇ／ｃｍも必要なために専用設備・工具を使って、しかも剥ぎ取り速度も２．３ｍ／ｈとゆっくりした速度で注意深く剥ぎ取っていた工程が、本発明、即ち、予め段差が得られる面にゴムとの剥離が容易なオックス帆布を埋設させておき加硫後これを僅か０．２Ｋｇ／ｃｍの力（手）で瞬時に剥すことが出来るようになり、この工程が大幅に短縮された。
【００２１】
また、本発明の第２の効果として、本体のゴム堰用配合ゴムよりも硫黄量が１〜５ｐｈｒ多い未加硫ゴムシート（接着用ゴムシート）を使用・両者間に挟み込んで積層し加硫接着することにより、大型ゴム堰の分割による製造方法とした接着部分の強度をより向上させ得ることができるに至った。
【図面の簡単な説明】
【図１】本発明に係る一実施例のゴム堰本体分割部分の分解状態の斜視図である。
【図２】除去部分と成形する際の分解側断面図である。
【図３】除去部分の形成したゴム堰本体部分の側断面図である。
【図４】継ぎ目箇所の分解側断面図である。
【図５】加硫接着時のゴム堰本体の一部斜視図である。
【図６】製造されたゴム堰本体を用いて施工したゴム堰の起立時を示す一部断面とした斜視図である。
【図７】更に、別実施例の製造されたゴム堰本体を用いて施工したゴム堰の起立時を示す一部断面とした斜視図である。
【図８】従来のゴム堰本体の継ぎ目箇所の側断面図である。
【符号の説明】
１．１ａ ゴム堰本体分割部分
２ 補強帆布入りゴムシート
３ ゴムシート
４ オックス帆布
４ａ オックス帆布剥離面
５ 接着用ゴムシート
６ 離型シート
７ 加硫用熱板
１０ ゴム堰本体
１１ 継ぎ目
２０ ゴム堰本体
２１ ゴム堰本体分割部分[0001]
[Industrial application fields]
The present invention relates to a method of manufacturing a rubber weir body that has a bag-like shape that stands up when a fluid is introduced and crosses a river to form a weir, and the weir collapses and discharges the fluid to free the flow of the river.
[0002]
[Prior art]
When the rubber weir becomes large, it takes a large space and large equipment to vulcanize and manufacture the rubber weir at a time, which is expensive in terms of equipment. In view of this, there has been conventionally disclosed a method of manufacturing a main body rubber weir by manufacturing a main body divided portion obtained by dividing the rubber weir main body in the circumferential direction in advance and joining them together. (Japanese Patent Publication No. 3-35098, Japanese Patent Laid-Open No. 6-226850)
[0003]
As shown in FIG. 8 in both the above-mentioned publications, for example, in order to strengthen the adhesion of the edge of the vulcanized rubber dam main body divided portion 01, for example, a step is provided at the end and the remaining portion is removed. On the other hand, a rubber sheet 02 with a reinforced canvas separately molded according to the step shape (in the case of a vulcanized rubber sheet through an unvulcanized rubber) or an unvulcanized rubber with a reinforced canvas is shown in FIG. As described above, the rubber dam main body is completed by being fitted to the step portion of the rubber dam main body divided portion and vulcanized and bonded.
[0004]
[Problems to be solved by the invention]
In the above method, a step is required to make a step on the edge of the rubber dam main body divided portion 01 once vulcanized. At this time, the rubber surface between the reinforced canvases is accurately peeled, and then along the step, the corresponding vulcanized rubber sheet with reinforced canvas of the same compounded material, or recently, the unvulcanized rubber with reinforced canvas of the same compounded. It is important to vulcanize and bond so that peeling or destruction from the bonding surface does not occur by accurately fitting 02.
[0005]
For this reason, as a method for producing this step, a step of peeling off the portion 2 of FIG. 2 by using dedicated equipment and techniques is provided in order to form the step. This stripping operation is required to be precisely made, so it takes a considerable amount of time for this process to peel off on the rubber surface unless the stripping speed is slowed down. I need it.
[0006]
Furthermore, when fitting to both step surfaces, vulcanized and bonded using the rubber dam body split rubber and the other equivalent rubber dam rubber, (1) Both adhesives are reinforced rubber containing reinforced rubber. In this case, the vulcanized adhesive is naturally bonded via an unvulcanized rubber. In this case, the vulcanized bonded part becomes over-vulcanized, and the rigidity of the bonded part is lowered to make it smoothly circular. (2) When unvulcanized rubber containing reinforcing material of the same composition as the rubber weir body split rubber is brought into contact and vulcanized and bonded, sulfur or the like is transferred from the unvulcanized rubber to the vulcanized rubber side. The transfer of the cross-linking agent occurs, and the adhesive force at the adhesive interface is lowered, causing peeling.
[0007]
The present invention has been made in view of such problems, and the purpose of the present invention is to firstly prevent a part of the manufacturing process (to broaden the adhesive surface of both to prevent peeling and destruction of the adhesive part). The second step is to provide a method for manufacturing a rubber weir body that can greatly simplify the step of providing a step, and secondly, can further improve the adhesive force of the joint portion of the rubber weir body splitting part.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the rubber weir manufacturing method according to claim 1 is a rubber weir that rises when a fluid is introduced and collapses when discharged, and is divided in the circumferential direction of the rubber weir. In a method for manufacturing a rubber weir, in which at least two or more rubber weir portions are bonded to each other by post-bonding to each other, the rubber weir body divided parts that have been manufactured in advance are brought into contact with each other at the edge, vulcanized, or In the method of manufacturing a rubber weir body, the rubber weir body is characterized in that an unvulcanized reinforced rubber sheet with a reinforced canvas and an unvulcanized rubber sheet are fitted and vulcanized and bonded to the rubber dam body divided portion. When creating a split part, embed a canvas that can be easily peeled off from the vulcanized rubber on the surface of the part you want to peel off, vulcanize, and peel off the canvas to form an adhesive part with the adjacent rubber dam body split part Also characterized by It is.
According to a second aspect of the present invention, there is provided a rubber weir manufacturing method comprising: a rubber weir standing by a fluid flow and falling by a discharge; and at least two or more rubbers formed by being divided in a circumferential direction of the rubber weir In the method of manufacturing a rubber weir that is integrally bonded to each other by post-bonding the weir parts to each other, an appropriate step is provided at the edge of the rubber weir body divided part that has been produced in advance, and Abutting at the edge, vulcanized or unvulcanized rubber sheet with reinforced canvas and unvulcanized rubber sheet are fitted and vulcanized and bonded to the rubber dam main body divided part. In the method of manufacturing the rubber weir body, when creating the rubber weir body divided part, vulcanize by embedding a canvas that can be easily peeled off from the vulcanized rubber at the part surface to be peeled off at least after the part where the step is provided in advance. Before peeling off this canvas A step is formed.
According to the first and second aspects of the present invention, when the rubber dam main body divided portion is created, at least after vulcanization, a canvas that can be easily separated from the vulcanized rubber is embedded and vulcanized. According to the method for manufacturing a large rubber weir characterized in that, the surface previously provided with a step or the like, that is, the insertion canvas and the rubber can be easily peeled off. Moreover, this step can be greatly simplified by obtaining this step more accurately than in the prior art.
[0009]
The above-mentioned canvas that can be easily separated from the vulcanized rubber means that when the material such as the canvas embedded in the unvulcanized rubber is integrally vulcanized, the material in the vulcanized rubber is easily The material is not particularly limited as long as it can be peeled off from the vulcanized rubber, but it is necessary that at least the material embedded in the rubber is a material that can sufficiently withstand the vulcanization temperature or time of the rubber, and more preferably When the material is peeled off, the rubber surface is preferably a material that exhibits the same fine irregularities as if the rubber surface was just buffed. From this point, Ox canvas or the like is preferably used.
[0010]
The rubber weir manufacturing method according to claim 3 is the rubber weir manufacturing method according to claim 1 or 2, wherein the rubber weir body divided parts are brought into contact with each other at the edges and vulcanized rubber sheet with reinforced canvas, When laminating and laminating unvulcanized rubber sheets with reinforced canvas, a non-vulcanized rubber sheet having a sulfur content of 1 to 5 phr higher than that of the rubber dam body divided portion is sandwiched between the two and then laminated and vulcanized and bonded. It is characterized by this.
In the present invention, a prefabricated rubber dam body wedges each other in contact with the edge of vulcanized reinforced fabric containing rubber sheet or a reinforcing fabric containing unvulcanized rubber sheet when Aise' laminated rubber dam body divided An unvulcanized rubber sheet (adhesive rubber) having a sulfur amount of 1 to 5 phr more than the rubber composition for the rubber weir of the part is prepared, sandwiched between the two, and then laminated and vulcanized and bonded . Thereby, the intensity | strength of an adhesion part can be improved more. In addition, it is necessary to adjust the amount of sulfur according to the thickness of the unvulcanized rubber sheet sandwiched therebetween, the vulcanization conditions, and the like.
[0011]
[Action]
First, a canvas that can be easily separated from the vulcanized rubber is embedded in the surface of a portion that is later formed into a step or the like of the bonded portion and vulcanized. After that, it is possible to obtain a level difference easily and accurately by peeling off the buried canvas. Further, the separated surface is suitable for adhesion (moderate buffing is necessary in the past), that is, conventional buffing. The state can be obtained. Furthermore, the surface becomes a fresh surface. That is, the first of the points of the present invention is that, by using a peeling surface of the canvas instead of the conventional peeling between the canvases, (1) moderate unevenness (1) Anchor effect) can be easily obtained, and (2) the adhesive surface can be easily obtained as a normal surface (breedless) state.
Further, the second point of the present invention is to prepare an unvulcanized rubber for bonding having an amount of sulfur 1 to 5 parts larger than that of the rubber weir body rubber on the bonding surface, and sandwich the sandwiched rubber rubber body main body. It is characterized by being vulcanized and bonded. If the sulfur content of this unvulcanized rubber for bonding is equal or less than that, the transfer of sulfur from the unvulcanized rubber to the vulcanized rubber causes a decrease in elastic modulus and a decrease in adhesive strength.
[0012]
The present invention will be described below with reference to one embodiment shown in FIGS. 1 to 8, but is not limited to this embodiment.
The present invention has a structure in which the manufactured rubber dam body is folded, and first, the upper and lower main body divided portions 1 constituting the rubber dam body are manufactured in advance as shown in FIG. At this time, as shown in FIG. 2, an ox canvas (made of PET) 4 that can be easily peeled off from the vulcanized rubber later is embedded in the portion to be peeled off with a step, and vulcanized after molding. The rubber dam body divided portion 1 has a rectangular plate shape, and the folded divided portion 1a has a shape in which a rectangular plate shape is folded twice. Next, the whole Ox canvas is peeled off at the joint portion of the rubber dam main body split portion 1 to be joined together. At this time, the ox canvas and the vulcanized rubber can be easily peeled off because they are easily peeled off. (See Figure 3)
Since the peeled surface 4a is an uneven surface that is convenient for bonding, there is no need for buffing or the like.
[0013]
Next, when the rubber dam main body divided parts 1 are brought into contact with each other at their edges, the removed parts removed as shown in FIG. Next, a rubber sheet having a sulfur content of, for example, 3 phr more than the rubber weir main body rubber of about 0.5 mm is pasted along the entire step. Further, the rubber sheet 2 containing the unvulcanized reinforced canvas is sequentially fitted and laminated from the removed portion of the lower layer to the upper layer. And in order to adjust the whole thickness, the unvulcanized rubber sheet 3 of the outer layer is laminated on the uppermost layer. (See FIG. 4). In this way, the upper rubber dam main body divided portion 1 and the lower rubber dam main body divided portion 1 which are joined together by fitting the rubber sheets 2 and 3 with reinforced canvas to each other seam are overlapped with the release sheet 6 interposed therebetween. . (See Figure 5)
[0014]
One end portion is joined to the folded main body portion 1a, and the rubber dam main body divided portion 1 is successively joined to the upper and lower sheets, and the other end portion is an open end. The upper and lower joints are at the same position, and the vulcanizing hot plate 7 is sandwiched from above and below to perform vulcanization adhesion. In this way, vulcanization adhesion is performed simultaneously at the top and bottom.
The rubber weir main body 10 thus completed crosses the river and is fixed toward the upstream side with the upper and lower open ends overlapped with the riverbed portion. When a fluid such as air or water is fed into the bag-like rubber weir body 10, the rubber weir body expands, and stands up to regulate the river flow as shown in FIG. By draining, you can fall down and adjust the flow freely.
[0015]
In the above embodiment, the rubber weir body has a folded structure, but the present invention can be applied even if a single sheet without folding is formed into a bag shape. That is, as shown in FIG. 7, the rubber dam body divided portions 21 made of a sheet that is not folded back are sequentially vulcanized and bonded one by one to form a single bag-like rubber dam body 20.
[0016]
【Example】
Furthermore, although an Example is described and demonstrated, it is not limited to a present Example.
[Example]
Table 1 shows a rubber compounding example for the rubber weir of the present invention.
[0017]
[Table 1]

[0018]
The manufacturing method of the rubber weir is to first apply the physical properties that meet the requirements of the rubber weir to, for example, an unvulcanized rubber (W = 3 m, t = 1 mm, L = weir length) blended as shown in Table 1. In order to improve the adhesion to rubber, for example, about 4 sheets of unvulcanized rubber sheets with reinforcement material, containing a reinforcing material such as canvas dipped in an adhesive solution, are laminated in order, and then vulcanized. However, at this time, as described above, the rubber dam divided body having a stepped portion is formed by sandwiching the ox canvas 4 having good releasability with the rubber so as to have a stepped shape in advance and then vulcanizing and peeling off the ox canvas of the vulcanized rubber. Get. (See Figure 3)
[0019]
Next, the second point of the present invention is that a rubber vulcanized rubber sheet containing a reinforced canvas material is used to fit the main body divided bodies of the rubber weirs obtained as described above into steps. As shown in Table 1, the vulcanized rubber sheet and an adhesive sheet containing 1 to 5 phr of sulfur more than the main rubber are laminated in accordance with the corresponding rubber dam main body stepped portions and vulcanized and bonded. (See Figs. 4 and 5)
[0020]
【The invention's effect】
As described in detail above, according to the present invention, first of all, for example, in the process of providing a step or the like to widen the bonding surface which has been conventionally required as described above, Since the force of 15Kg / cm is required, the process of carefully stripping off at a slow speed of 2.3m / h using dedicated equipment and tools is the present invention, that is, the step is Ox canvas that can be easily peeled off from rubber is embedded in the resulting surface, and after vulcanization, it can be peeled off instantaneously with a force (hand) of only 0.2 Kg / cm. Shortened.
[0021]
In addition, as a second effect of the present invention, an unvulcanized rubber sheet (adhesive rubber sheet) having a sulfur amount 1 to 5 phr higher than that of the rubber weir compounded rubber of the main body is used. By bonding, the strength of the bonded portion in the manufacturing method by dividing the large rubber weir can be further improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of an exploded state of a rubber dam main body divided portion according to an embodiment of the present invention.
FIG. 2 is an exploded side cross-sectional view of a removed portion and molding.
FIG. 3 is a side sectional view of a rubber dam main body portion formed with a removal portion.
FIG. 4 is an exploded side sectional view of a joint portion.
FIG. 5 is a partial perspective view of a rubber weir body during vulcanization bonding.
FIG. 6 is a partial cross-sectional perspective view showing a rubber weir constructed using the manufactured rubber weir body when standing.
FIG. 7 is a partial cross-sectional perspective view showing a rubber dam constructed using a rubber dam body manufactured according to another embodiment when standing.
FIG. 8 is a side sectional view of a joint portion of a conventional rubber weir body.
[Explanation of symbols]
1.1a Rubber dam body split part 2 Reinforced canvas-containing rubber sheet 3 Rubber sheet 4 Ox canvas 4a Ox canvas peeling surface 5 Adhesive rubber sheet 6 Release sheet 7 Vulcanizing hot plate 10 Rubber dam body 11 Seam 20 Rubber dam body 21 Rubber dam body split part

Claims (3)

A rubber weir that rises when a fluid is introduced and collapses when discharged. At least two or more rubber weirs formed by dividing the rubber weir in the circumferential direction are bonded together to form a single unit. In the rubber weir manufacturing method, the rubber weir body divided parts that were manufactured in advance are brought into contact with each other at the edge, and the vulcanized or unvulcanized reinforced canvas-filled rubber sheet and the unvulcanized rubber sheet are fitted together. In the method of manufacturing a rubber weir body , characterized in that both the rubber weir body divided part and vulcanized and bonded,
When creating a rubber dam body divided portions, adhesion of the peeling want peeling the vulcanized rubber part surface is vulcanized by embedding an easy canvas, rubber dam body divided portions adjacent by peeling off the canvas A method for producing a large rubber weir characterized by forming a portion . Standing by fed flow body, a rubber dam for lodging the discharge, integral to each other by bonding the rear together at least two rubber dam portion that is divided by formed over the circumferential direction of the rubber dam In the method of manufacturing a rubber dam that is bonded, the edge of the rubber dam body divided part that has been manufactured in advance is provided with an appropriate level difference, and the rubber dam body divided parts are brought into contact with each other at the edge to be vulcanized or not. In the method for producing a rubber weir body characterized in that a rubber sheet containing a vulcanized reinforcing canvas and an unvulcanized rubber sheet are fitted and vulcanized and bonded together with the rubber dam body divided part.
When creating a rubber dam body wedges, and vulcanized embedded peeling easy canvas with vulcanized rubber part surface to be peeled off at least later part providing the pre-step, said by peeling the canvas A method for producing a large rubber weir, characterized by forming a step . When the rubber dam body divided parts are in contact with each other at the edge and vulcanized rubber sheets with reinforced canvas or unvulcanized rubber sheets with reinforced canvas are laminated together, the amount of sulfur is higher than that of the rubber dam body divided parts. The method for producing a large rubber weir according to claim 1 or 2, wherein an unvulcanized rubber sheet having an amount of 1 to 5 phr is sandwiched between the two and then laminated and vulcanized and bonded.

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