JP4608117B2 - Rubber roller manufacturing apparatus and rubber roller manufacturing method - Google Patents
Rubber roller manufacturing apparatus and rubber roller manufacturing method Download PDFInfo
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Description
【０００１】
【発明の属する技術分野】
本発明は、ゴムローラの製造装置及びゴムローラの製造方法に関し、詳しくは、押出し機を用いて未加硫のゴム組成物を押出すと同時に、連続的に芯金を押出し機のクロスヘッドダイを通過させて、芯金の外周上に未加硫のゴム組成物を配置せしめた後、芯金の端部近傍の未加硫ゴム組成物を切断刃で切断するゴムローラの製造装置及びゴムローラの製造方法に関する。
【０００２】
【従来の技術】
従来、ゴムローラの製造方法として、未加硫のゴム組成物を押出し機を用いてチューブ状に押出して規定の寸法に切断した後、加熱して加硫ゴムチューブを作製し、接着剤を塗布した芯金を加硫ゴムチューブの内径部に挿入した後、更に加熱して芯金と加硫ゴムの接着を行うゴムローラの製造方法が知られている。
【０００３】
また、押出し機を用いて未加硫のゴム組成物を押出すと同時に、連続的に接着剤を塗布した芯金を押出し機のクロスヘッドダイを通過させて、芯金の外周上に未加硫のゴム材料を配置せしめた後、芯金の端部近傍の未加硫ゴム組成物を切断刃で芯金１本毎に切断した後、加熱して加硫させるゴムローラの製造方法も知られている。
【０００４】
しかしながら、上記した従来の製造方法では、次のような不都合があった。
【０００５】
つまり、未加硫のゴム組成物を押出し機を用いてチューブ状に押出して規定の寸法に切断した後、加熱して加硫ゴムチューブを作製し、接着剤を塗布した芯金を加硫ゴムチューブの内径部に挿入した後、更に加熱して芯金と加硫ゴムの接着を行うゴムローラの製造方法は、製造工程が多く製造コストが高くなるという問題点があった。
【０００６】
一方、押出し機を用いて未加硫のゴム組成物を押出すと同時に、連続的に接着剤を塗布した芯金を押出し機のクロスヘッドダイを通過させて、芯金の外周上に未加硫のゴム材料を配置せしめた後、芯金の端部近傍の未加硫ゴム組成物を切断刃で芯金１本毎に切断した後、加熱して加硫させるゴムローラの製造方法は、芯金の挿入工程と加熱接着工程が省かれるため製造工程が短く出来るという長所があるものの未加硫ゴム組成物の切断が芯金上で行われるため、未加硫ゴム組成物の切断が完全にできず、未加硫のゴムローラを１本毎に切り離す際に未加硫ゴムが糸状に引き伸ばされて、装置に付着し、装置トラブルの原因となったり、装置汚染を起こしたりするという問題があった。また、未加硫ゴム組成物の切断ができるように切断刃を強く芯金に押し付けると芯金に傷が付きゴムローラが不良品となったり、切断刃が破損し易くなったりするという問題点があった。
【０００７】
【発明が解決しようとする課題】
本発明の目的は、未加硫ゴム組成物を切断して未加硫のゴムローラを１本毎に切り離す際に未加硫ゴムが糸状に引き伸ばされることなく、また、未加硫ゴム組成物の切断時に芯金に傷を付けることがないゴムローラの製造装置及びゴムローラの製造方法を提供することにある。
【０００８】
【課題を解決するための手段】
本発明に従って、押出し機を用いて未加硫のゴム組成物を押出すと同時に、硫黄複合快削鋼鋼材にＫＮメッキを施した芯金を連続的に押出し機のクロスヘッドダイを通過させて、該芯金の外周上に未加硫のゴム組成物を配置せしめた後、芯金の端部近傍の未加硫ゴム組成物を切断刃で切断する、芯金外周上に未加硫ゴム組成物を被覆した、その後に加熱して加硫されるゴムローラの製造装置において、該切断刃が７０℃以上３００℃以下に加熱され、かつ、その材質が、真鍮又はジュラルミンであって、さらに、該切断刃が少なくとも２枚設置してあり、２枚の切断刃を開閉する機構があり、２枚の切断刃が閉じた状態の時、上記芯金外径と略同等の直径である円形の空洞部が生じるように設定されていて、２枚の切断刃が閉じることにより芯金外周上の未加硫ゴムを切断するものであることを特徴とするゴムローラの製造装置及びゴムローラの製造方法が提供される。
【０００９】
【発明の実施の形態】
以下に、本発明の実施の形態を詳細に説明する。
【００１０】
本発明にかかるゴムローラの製造装置及びゴムローラの製造方法は、押出し機を用いて未加硫のゴム組成物を押出すと同時に、連続的に接着剤を塗布した芯金を押出し機のクロスヘッドダイを通過させて、芯金の外周上に未加硫のゴム組成物を配置せしめた後、芯金の端部近傍の未加硫ゴム組成物を切断刃で芯金１本毎に切断するゴムローラの製造装置において、該切断刃を７０℃以上に加熱して未加硫ゴム組成物の切断を行う。好ましくは、加熱する該切断刃の温度は、少なくとも未加硫ゴム組成物を切断時に１００〜３００℃である。
【００１１】
上記の構成を有する本発明のゴムローラ製造装置及びゴムローラの製造方法によれば、未加硫ゴム組成物を加熱した切断刃で芯金１本毎に切断することにより未加硫ゴムが糸状に引き伸ばされることなく、未加硫のゴムローラを１本毎に切り離すことができる。これは、切断刃による未加硫ゴム組成物の切断が完全でなくても未加硫ゴムが引き伸ばされ始めた状態時に熱によって切断されるためだと考えられる。切断刃の温度が７０℃よりも低いと切断性の向上効果がない。更に、切断刃の温度が７０℃以上でも１００℃よりも低い温度では実用レベルではあるが切断性改善効果が小さく、３００℃を超えると切断刃に少量のゴムが長時間付着した場合、燃焼する可能性がある。加熱方法は、特に限定するものではないが、電熱ヒーターや高周波誘導加熱等により加熱することができる。
【００１２】
また、該切断刃は２枚以上設置し、前記２枚以上の切断刃を開閉する機構があり、該２枚以上の切断刃が閉じた状態の時、芯金外径と略同等の直径である円形の空洞部が生じるように設定することが好ましく、該２枚以上の切断刃を開いた状態から閉じることにより芯金外周上の未加硫ゴムを容易に切断することができる。更に、該切断刃の形状は、芯金対応半円部と該ゴムローラ外径より大きなかみ合わせ部からなることが好ましく、これにより未加硫ゴムの切断が容易に行える。
【００１３】
該切断刃の材質は、芯金の硬さよりも軟らかいことが好ましい。切断刃の材質が芯金の硬さよりも硬いと、芯金外周上の未加硫ゴムの切断時に切断刃が芯金に強く接触した場合に芯金に傷が付き易くなり、ゴムローラが不良品となる確率が高くなる。芯金は、一般にＳＵＭ（硫黄複合快削鋼鋼材）材にＫＮメッキを施したもの等が用いられており、芯金に傷を付けないようにするため、切断刃の材質として、真鍮又はジュラルミンが好ましく用いられる。本発明においては、硬さの評価としてビッカース硬さ（Ｈｖ）を用いたが、ユニバーサル硬さやロックウエル硬さ等でも同様にして評価することもできる。
【００１４】
更に、未加硫ゴム組成物切断時に、該２枚以上の切断刃が閉じた状態で、角度１０°以上回転することが好ましい。切断刃が回転することで、芯金外周上の未加硫ゴム組成物の切断精度が更に向上する。
【００１５】
【実施例】
以下に、具体的な実施例及び比較例を挙げて本発明をより詳細に説明する。
【００１６】
（実施例１）
未加硫ゴム組成物をクロスヘッドダイ付き押出し機を用いて予め接着剤を塗布した芯金とともに外径が略φ１０ｍｍになるように押出し、芯金外周上に未加硫ゴム組成物を被覆した。この時、芯金は外径φ６ｍｍのＳＵＭ（硫黄複合快削鋼鋼材、硬さ＝１８０Ｈｖ）材にＫＮメッキを施したもの（硬さ＝４５０Ｈｖ）を用い、ゴムの押出し速度に合わせて、各芯金間に隙間が開かないように一定速度で供給し続けた。次に、材質は真鍮（硬さ＝１５０Ｈｖ）の図１に示す２枚組の切断刃（Ａ）を用い、芯金の端部近傍の未加硫ゴム組成物を切断刃が開いた状態から閉じることで切断し、切り離すことで未加硫ゴムローラを得た。この時、切断時の切断刃の温度を１２０℃となるように電熱ヒーターを用いて設定し、切断刃の閉じ圧を０．２Ｍｐａに設定した。
【００１７】
（実施例２）
実施例１に対して、切断時の切断刃の温度を２５０℃となるように設定した以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００１８】
（実施例３）
実施例１に対して、切断時の切断刃の温度を８０℃となるように設定した以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００１９】
（実施例４）
実施例１に対して、切断刃の形状を図２に示す２枚組の切断刃（Ｂ）を切断時の切断刃の温度を１５０℃となるように設定した以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００２０】
（実施例５）
実施例４に対して、切断刃の材質をジュラルミン（硬さ＝１５０Ｈｖ）とした以外は、実施例４と同様にして未加硫ゴムローラを作製した。
【００２１】
（実施例６）
実施例５に対して、切断時に切断刃を閉じた状態で１８０°回転させた以外は、実施例５と同様にして未加硫ゴムローラを作製した。
【００２２】
（実施例７）
実施例１に対して、切断刃の形状を図３に示す２枚組の切断刃（Ｃ）を用いた以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００２３】
（実施例８）
実施例１に対して、切断刃の形状を図４に示す４枚組の切断刃（Ｄ）を用いた以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００２４】
（比較例１）
実施例１に対して、切断時の切断刃を加熱することなく、加熱刃の温度を室温（２５℃）とした以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００２５】
（比較例２）
実施例１に対して、切断時の切断刃の温度を６０℃となるように設定した以外は、実施例１と同様にして未加硫ゴムローラを作製した。
【００２６】
（比較例３）
実施例４に対して、切断時の切断刃を加熱することなく、加熱刃の温度を室温とした以外は、実施例４と同様にして未加硫ゴムローラを作製した。
【００２７】
（比較例４）
比較例１に対して、切断刃の材質をＳＵＳ３０３（硬さ＝２００Ｈｖ）とした以外は、比較例１と同様にして未加硫ゴムローラを作製した。
【００２８】
（比較例５）
比較例３に対して、切断刃の材質をＳＵＳ３０３とした以外は、比較例３と同様にして未加硫ゴムローラを作製した。
【００２９】
（比較例６）
比較例４に対して、切断刃の閉じ圧を０．４Ｍｐａに設定した以外は、比較例４と同様にして未加硫ゴムローラを作製した。
【００３０】
（比較例７）
比較例６に対して、切断時に切断刃を閉じた状態で１８０°回転させた以外は、比較例６と同様にして未加硫ゴムローラを作製した。
【００３１】
なお実施例及び比較例の評価は、各実施例及び比較例の未加硫ゴムローラを１００本作製し次のようにして行った。
【００３２】
＜切断状況＞
芯金の端部近傍の未加硫ゴム組成物を切断刃で切断し、未加硫のゴムローラを１本毎に切り離す際の状況を観察した。未加硫ゴムが完全に切断され切り離す際に全く糸状に引き伸ばされることがないものを良、切り離す際に少量引き伸ばさせるものの大きく引き伸ばされることなく装置を汚染することがないものを可、切り離す際に糸状に大きく引き伸ばされ装置を汚染するものを不可とした。
【００３３】
＜芯金傷＞
芯金の端部近傍の未加硫ゴム組成物を切断刃で切断し、未加硫のゴムローラを１本毎に切り離した後、切断刃による芯金の傷の有無を観察した。１００本の未加硫ゴムローラ中１本も芯金に傷が付いていないものを○、１００本の未加硫ゴムローラ中１〜２０本芯金に傷が付いたものを△、１００本の未加硫ゴムローラ中２１本以上の芯金に傷が付いたものを×とした。
【００３４】
結果を表１及び表２に示す。この結果から切断刃を７０℃以上に加熱することにより、未加硫ゴムの切断性が良くなっていることがわかる。また、切断性を向上させるために、切断刃を加熱せずに切断刃を必要以上に硬くし、芯金に切断刃を必要以上に強く押し付けたものは、芯金に傷が付くことがわかる。
【００３５】
【表１】
【表２】
【発明の効果】
以上説明したように、本発明によれば、未加硫ゴムの切断性に優れ、芯金に傷を付けることがないゴムローラの製造装置及びゴムローラの製造方法を提供することが可能となった。
【図面の簡単な説明】
【図１】本発明のゴムローラの製造装置における２枚組の切断刃（Ａ）である。
【図２】本発明のゴムローラの製造装置における２枚組の切断刃（Ｂ）である。
【図３】本発明のゴムローラの製造装置における２枚組の切断刃（Ｃ）である。
【図４】本発明のゴムローラの製造装置における４枚組の切断刃（Ｄ）である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rubber roller manufacturing apparatus and a rubber roller manufacturing method, and more particularly, an unvulcanized rubber composition is extruded using an extruder, and at the same time, a metal core is continuously passed through a crosshead die of the extruder. And a rubber roller manufacturing apparatus and a rubber roller manufacturing method for cutting an unvulcanized rubber composition in the vicinity of an end of the core metal with a cutting blade after disposing the unvulcanized rubber composition on the outer periphery of the core metal About.
[0002]
[Prior art]
Conventionally, as a method of manufacturing a rubber roller, an unvulcanized rubber composition is extruded into a tube shape using an extruder and cut into a specified size, and then heated to produce a vulcanized rubber tube, and an adhesive is applied. A rubber roller manufacturing method is known in which a core metal is inserted into an inner diameter portion of a vulcanized rubber tube and then further heated to bond the core metal and the vulcanized rubber.
[0003]
In addition, the unvulcanized rubber composition is extruded using an extruder, and at the same time, the cored bar to which the adhesive has been continuously applied is passed through the crosshead die of the extruder, and is not added on the outer periphery of the cored bar. Also known is a method of manufacturing a rubber roller in which an unvulcanized rubber composition in the vicinity of an end portion of a cored bar is cut for each cored bar with a cutting blade and then heated and vulcanized after placing a rubber material of sulfur. ing.
[0004]
However, the conventional manufacturing method described above has the following disadvantages.
[0005]
That is, an unvulcanized rubber composition is extruded into a tube shape using an extruder and cut into a specified size, and then heated to produce a vulcanized rubber tube, and the core metal coated with an adhesive is vulcanized rubber. The rubber roller manufacturing method in which the core metal and the vulcanized rubber are bonded by being further heated after being inserted into the inner diameter portion of the tube has a problem that the manufacturing cost is increased due to many manufacturing steps.
[0006]
On the other hand, an unvulcanized rubber composition is extruded using an extruder, and at the same time, a cored bar continuously coated with an adhesive is passed through the crosshead die of the extruder, and unvulcanized on the outer periphery of the cored bar. After the rubber material of sulfur is placed, the unvulcanized rubber composition in the vicinity of the end of the core metal is cut for each core metal with a cutting blade and then heated to vulcanize. Although there is an advantage that the manufacturing process can be shortened because the gold insertion process and the heat bonding process are omitted, the unvulcanized rubber composition is cut on the core metal, so that the unvulcanized rubber composition is completely cut. However, when unvulcanized rubber rollers are separated one by one, the unvulcanized rubber is stretched into a thread and adheres to the equipment, causing problems with the equipment or causing equipment contamination. It was. In addition, if the cutting blade is strongly pressed against the core metal so that the unvulcanized rubber composition can be cut, the core metal will be damaged and the rubber roller will be defective or the cutting blade will be easily damaged. there were.
[0007]
[Problems to be solved by the invention]
The object of the present invention is to prevent the unvulcanized rubber from being stretched into a thread when the unvulcanized rubber composition is cut and the unvulcanized rubber rollers are separated one by one. An object of the present invention is to provide a rubber roller manufacturing apparatus and a rubber roller manufacturing method that do not damage the core metal during cutting.
[0008]
[Means for Solving the Problems]
In accordance with the present invention, simultaneously with extruding the unvulcanized rubber composition using an extruder, continuously passed through a crosshead die press out machine core metal subjected to KN plating sulfur composite free cutting steel steel Te, after allowed disposed unvulcanized rubber composition on an outer periphery of the core metal, cutting the unvulcanized rubber composition in the vicinity of the end portion of the core metal at the cutting edge, unvulcanized on metal core periphery In a rubber roller manufacturing apparatus coated with a rubber composition and then heated and vulcanized, the cutting blade is heated to 70 ° C. or higher and 300 ° C. or lower, and the material thereof is brass or duralumin, A circular shape having at least two cutting blades, a mechanism for opening and closing the two cutting blades, and a diameter substantially equal to the outer diameter of the core metal when the two cutting blades are closed. The cavity is set so that the two cutting blades are closed. Manufacturing apparatus and a rubber roller manufacturing method of the rubber roller, characterized in that it is intended to cut the unvulcanized rubber on the gold outer periphery is provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail.
[0010]
A rubber roller manufacturing apparatus and a rubber roller manufacturing method according to the present invention include a method of extruding an unvulcanized rubber composition using an extruder and simultaneously applying a core metal coated with an adhesive to a crosshead die of the extruder. A rubber roller that passes an uncured rubber composition on the outer periphery of the cored bar and then cuts the unvulcanized rubber composition near the end of the cored bar one by one with a cutting blade In this manufacturing apparatus, the cutting blade is heated to 70 ° C. or higher to cut the unvulcanized rubber composition. Preferably, the temperature of the cutting blade to be heated is 100 to 300 ° C. at least when cutting the unvulcanized rubber composition.
[0011]
According to the rubber roller manufacturing apparatus and the rubber roller manufacturing method of the present invention having the above-described configuration, the unvulcanized rubber is stretched into a thread shape by cutting the unvulcanized rubber composition for each core metal with a heated cutting blade. The unvulcanized rubber roller can be cut off one by one without being broken. This is considered to be because the unvulcanized rubber composition is cut by heat when the unvulcanized rubber begins to be stretched even if the unvulcanized rubber composition is not completely cut by the cutting blade. When the temperature of the cutting blade is lower than 70 ° C., there is no effect of improving the cutting property. Furthermore, even if the temperature of the cutting blade is 70 ° C. or higher, the cutting performance improvement effect is small at a temperature lower than 100 ° C., but if it exceeds 300 ° C., it burns if a small amount of rubber adheres to the cutting blade for a long time. there is a possibility. The heating method is not particularly limited, but it can be heated by an electric heater, high frequency induction heating or the like.
[0012]
In addition, two or more cutting blades are installed, and there is a mechanism for opening and closing the two or more cutting blades. When the two or more cutting blades are in a closed state, the diameter is approximately the same as the outer diameter of the cored bar. It is preferable to set so that a certain circular cavity portion is generated, and the unvulcanized rubber on the outer periphery of the core metal can be easily cut by closing the two or more cutting blades from the opened state. Furthermore, the shape of the cutting blade is preferably composed of a semi-circular portion corresponding to the core metal and a meshing portion larger than the outer diameter of the rubber roller, whereby the unvulcanized rubber can be easily cut.
[0013]
The material of the cutting blade is preferably softer than the hardness of the cored bar. If the material of the cutting blade is harder than the hardness of the core, the core will be easily damaged when the cutting blade comes into strong contact with the core when cutting unvulcanized rubber on the outer periphery of the core. The probability that The core is generally made of SUM (sulfur composite free-cutting steel) material with KN plating, etc. Brass or duralumin as the material of the cutting blade to prevent the core from being damaged. Is preferably used. In the present invention, Vickers hardness (Hv) is used as an evaluation of hardness, but universal hardness, Rockwell hardness, etc. can also be similarly evaluated.
[0014]
Furthermore, when cutting the unvulcanized rubber composition, it is preferable to rotate the angle by 10 ° or more with the two or more cutting blades closed. By rotating the cutting blade, the cutting accuracy of the unvulcanized rubber composition on the outer periphery of the core metal is further improved.
[0015]
【Example】
Hereinafter, the present invention will be described in more detail with reference to specific examples and comparative examples.
[0016]
Example 1
The unvulcanized rubber composition was extruded together with a core metal to which an adhesive had been applied in advance using an extruder with a crosshead die so that the outer diameter was approximately φ10 mm, and the unvulcanized rubber composition was coated on the outer periphery of the core metal. . At this time, the core metal is a SUM (sulfur composite free-cutting steel material, hardness = 180 Hv) with an outer diameter of 6 mm, and KN plating (hardness = 450 Hv) is used. Supply was continued at a constant speed so as not to open a gap between the core bars. Next, using the two cutting blades (A) shown in FIG. 1 made of brass (hardness = 150 Hv), the unvulcanized rubber composition in the vicinity of the end of the core metal is opened from the state where the cutting blade is opened. It cut | disconnected by closing and obtained the unvulcanized rubber roller by cut | disconnecting. At this time, the temperature of the cutting blade at the time of cutting was set to 120 ° C. using an electric heater, and the closing pressure of the cutting blade was set to 0.2 MPa.
[0017]
(Example 2)
An unvulcanized rubber roller was produced in the same manner as in Example 1 except that the temperature of the cutting blade at the time of cutting was set to 250 ° C. with respect to Example 1.
[0018]
(Example 3)
An unvulcanized rubber roller was produced in the same manner as in Example 1 except that the temperature of the cutting blade at the time of cutting was set to 80 ° C. with respect to Example 1.
[0019]
Example 4
Similar to Example 1, except that the cutting blade shape was set such that the cutting blade temperature at the time of cutting the two cutting blades (B) shown in FIG. Thus, an unvulcanized rubber roller was produced.
[0020]
(Example 5)
An unvulcanized rubber roller was produced in the same manner as in Example 4 except that the material of the cutting blade was duralumin (hardness = 150 Hv).
[0021]
(Example 6)
An unvulcanized rubber roller was produced in the same manner as in Example 5 except that it was rotated 180 ° with the cutting blade closed at the time of cutting.
[0022]
(Example 7)
An unvulcanized rubber roller was produced in the same manner as in Example 1 except that the cutting blade shape of the pair of cutting blades (C) shown in FIG.
[0023]
(Example 8)
An unvulcanized rubber roller was produced in the same manner as in Example 1 except that the cutting blade shape (D) shown in FIG.
[0024]
(Comparative Example 1)
An unvulcanized rubber roller was produced in the same manner as in Example 1 except that the temperature of the heating blade was set to room temperature (25 ° C.) without heating the cutting blade at the time of cutting.
[0025]
(Comparative Example 2)
An unvulcanized rubber roller was produced in the same manner as in Example 1 except that the temperature of the cutting blade at the time of cutting was set to 60 ° C. with respect to Example 1.
[0026]
(Comparative Example 3)
In contrast to Example 4, an unvulcanized rubber roller was produced in the same manner as in Example 4 except that the temperature of the heating blade was set to room temperature without heating the cutting blade during cutting.
[0027]
(Comparative Example 4)
An unvulcanized rubber roller was produced in the same manner as in Comparative Example 1 except that the material of the cutting blade was SUS303 (hardness = 200 Hv) with respect to Comparative Example 1.
[0028]
(Comparative Example 5)
An unvulcanized rubber roller was produced in the same manner as in Comparative Example 3 except that the material of the cutting blade was changed to SUS303 with respect to Comparative Example 3.
[0029]
(Comparative Example 6)
An unvulcanized rubber roller was produced in the same manner as in Comparative Example 4 except that the closing pressure of the cutting blade was set to 0.4 MPa for Comparative Example 4.
[0030]
(Comparative Example 7)
An unvulcanized rubber roller was produced in the same manner as in Comparative Example 6 except that the comparative example 6 was rotated 180 ° with the cutting blade closed during cutting.
[0031]
In addition, evaluation of the Example and the comparative example produced 100 unvulcanized rubber rollers of each Example and the comparative example, and performed it as follows.
[0032]
<Disconnection status>
The unvulcanized rubber composition in the vicinity of the end of the metal core was cut with a cutting blade, and the situation when the unvulcanized rubber roller was separated one by one was observed. When uncured rubber is completely cut and separated, it is good that it does not stretch like a thread at all, and when it is separated, it can be stretched by a small amount but does not stretch greatly and does not contaminate the device. Those that are greatly stretched in the form of yarn and contaminate the device are disabled.
[0033]
<Core metal scratch>
The unvulcanized rubber composition in the vicinity of the end portion of the core metal was cut with a cutting blade, and after uncut rubber rollers were cut one by one, the presence or absence of scratches on the core metal with the cutting blade was observed. One of 100 unvulcanized rubber rollers has no scratch on the core, 1 to 20 of 100 unvulcanized rubber rollers have a scratch on the core, Δ, 100 In the vulcanized rubber roller, 21 or more cores with scratches were marked with ×.
[0034]
The results are shown in Tables 1 and 2. From this result, it is understood that the cutting performance of the unvulcanized rubber is improved by heating the cutting blade to 70 ° C. or higher. In addition, in order to improve the cutting performance, it is understood that if the cutting blade is hardened more than necessary without heating the cutting blade and the cutting blade is pressed more strongly than necessary, the core will be damaged. .
[0035]
[Table 1]
[Table 2]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a rubber roller manufacturing apparatus and a rubber roller manufacturing method that are excellent in cutting performance of unvulcanized rubber and that do not damage the core metal.
[Brief description of the drawings]
FIG. 1 shows a pair of cutting blades (A) in a rubber roller manufacturing apparatus according to the present invention.
FIG. 2 is a pair of cutting blades (B) in the rubber roller manufacturing apparatus of the present invention.
FIG. 3 is a set of two cutting blades (C) in the rubber roller manufacturing apparatus of the present invention.
FIG. 4 is a set of four cutting blades (D) in the rubber roller manufacturing apparatus of the present invention.
Claims (6)
該切断刃が７０℃以上３００℃以下に加熱され、かつ、その材質が、真鍮又はジュラルミンであって、
さらに、該切断刃が少なくとも２枚設置してあり、２枚の切断刃を開閉する機構があり、２枚の切断刃が閉じた状態の時、上記芯金外径と略同等の直径である円形の空洞部が生じるように設定されていて、２枚の切断刃が閉じることにより芯金外周上の未加硫ゴムを切断するものであることを特徴とするゴムローラの製造装置。Extruder simultaneously with extruding the unvulcanized rubber composition using a continuously passed through a crosshead die press out machine core metal subjected to KN plating sulfur composite free cutting steel steel, the core After placing the unvulcanized rubber composition on the outer periphery of the gold, the unvulcanized rubber composition near the end of the core metal is cut with a cutting blade, and the unvulcanized rubber composition is formed on the outer periphery of the core metal In a manufacturing apparatus for manufacturing a rubber roller that is coated and then heated and vulcanized,
The cutting blade is heated to 70 ° C. or more and 300 ° C. or less, and the material is brass or duralumin,
Further, at least two cutting blades are installed, there is a mechanism for opening and closing the two cutting blades, and when the two cutting blades are in a closed state, the diameter is substantially equal to the outer diameter of the cored bar. An apparatus for manufacturing a rubber roller, which is set so as to generate a circular cavity, and cuts unvulcanized rubber on the outer periphery of a core metal by closing two cutting blades.
上記切断工程において、材質が真鍮又はジュラルミンである切断刃を用い、該切断刃を７０℃以上３００℃以下に加熱し、
さらに該切断刃が少なくとも２枚設置してあり、２枚の切断刃を開閉する機構があり、２枚の切断刃が閉じた状態の時、上記芯金外径と略同等の直径である円形の空洞部が生じるように設定されていて、２枚の切断刃が閉じることにより芯金外周上の未加硫ゴムを切断することを特徴とするゴムローラの製造方法。Extruder simultaneously with extruding the unvulcanized rubber composition using a continuously passed through a crosshead die press out machine core metal subjected to KN plating sulfur composite free cutting steel steel core An unvulcanized rubber on the outer periphery of the core metal, comprising a step of disposing an unvulcanized rubber composition on the outer periphery of the gold, and a step of cutting the unvulcanized rubber composition near the end of the core metal with a cutting blade In a method for producing a rubber roller coated with a composition and then heated and vulcanized,
In the cutting step, using a cutting blade whose material is brass or duralumin, the cutting blade is heated to 70 ° C. or more and 300 ° C. or less,
Moreover Yes and the cutting blade is placed at least two, there are mechanisms for opening and closing the two cutting blades, a state where two cutting blades are closed, is the core metal outer diameter substantially equal to diameter circular A method for producing a rubber roller, characterized in that the unvulcanized rubber on the outer periphery of the metal core is cut by closing two cutting blades.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60232900A (en) * | 1984-04-27 | 1985-11-19 | 豊田合成株式会社 | Force-cutting method of rubber |
| JPS63107537A (en) * | 1986-10-24 | 1988-05-12 | Mitsuba Seisakusho:Kk | Automatic rubber roll manufacturing equipment |
| JPH05220862A (en) * | 1992-02-13 | 1993-08-31 | Aisin Chem Co Ltd | Production of extrusion molded object |
| JPH0648317U (en) * | 1992-12-07 | 1994-06-28 | 浩 山口 | Wire stripper |
| JPH0872071A (en) * | 1994-09-09 | 1996-03-19 | Shin Etsu Polymer Co Ltd | Burr removal of rubber roll |
| JPH08207000A (en) * | 1994-10-28 | 1996-08-13 | Goodyear Tire & Rubber Co:The | Method and device for cutting elastomer material |
| JPH10217357A (en) * | 1997-02-07 | 1998-08-18 | Shin Etsu Polymer Co Ltd | Method of manufacturing semiconductive silicone rubber sponge roll |
| JPH11299037A (en) * | 1998-04-08 | 1999-10-29 | Kyushu Electric Power Co Inc | Cable stripper |
-
2001
- 2001-02-23 JP JP2001048533A patent/JP4608117B2/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60232900A (en) * | 1984-04-27 | 1985-11-19 | 豊田合成株式会社 | Force-cutting method of rubber |
| JPS63107537A (en) * | 1986-10-24 | 1988-05-12 | Mitsuba Seisakusho:Kk | Automatic rubber roll manufacturing equipment |
| JPH05220862A (en) * | 1992-02-13 | 1993-08-31 | Aisin Chem Co Ltd | Production of extrusion molded object |
| JPH0648317U (en) * | 1992-12-07 | 1994-06-28 | 浩 山口 | Wire stripper |
| JPH0872071A (en) * | 1994-09-09 | 1996-03-19 | Shin Etsu Polymer Co Ltd | Burr removal of rubber roll |
| JPH08207000A (en) * | 1994-10-28 | 1996-08-13 | Goodyear Tire & Rubber Co:The | Method and device for cutting elastomer material |
| JPH10217357A (en) * | 1997-02-07 | 1998-08-18 | Shin Etsu Polymer Co Ltd | Method of manufacturing semiconductive silicone rubber sponge roll |
| JPH11299037A (en) * | 1998-04-08 | 1999-10-29 | Kyushu Electric Power Co Inc | Cable stripper |
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