JPH04129721A - Production of staple-containing rubber sheet - Google Patents
Production of staple-containing rubber sheetInfo
- Publication number
- JPH04129721A JPH04129721A JP2253151A JP25315190A JPH04129721A JP H04129721 A JPH04129721 A JP H04129721A JP 2253151 A JP2253151 A JP 2253151A JP 25315190 A JP25315190 A JP 25315190A JP H04129721 A JPH04129721 A JP H04129721A
- Authority
- JP
- Japan
- Prior art keywords
- staple
- rubber
- sheet
- cut
- short fiber
- 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
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 43
- 239000005060 rubber Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 abstract description 27
- 238000004804 winding Methods 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、短繊維混入ゴムシートの製造方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing a rubber sheet containing short fibers.
（従来の技術）
例えば特公昭５８−２９２３１号公報に記載されるよう
に、押出し可能なポリマーと不連続繊維とからなる複合
体を、中心マンドレルの表面と外側ダイス部材の表面と
の間に形成された曲線からなる断面のチャンネルを有し
しかもＡ。／ＡＩか約２又は２以上てありそしてＷ。／
Ｗ、÷Ｒｏ／Ｒ１が２又は２以上である（但し、Ａｏは
チャンネル出口の面積、ＡＩはチャンネル入口の面積、
Ｗｏは出口におけるチャンネルの幅、Ｗｌは入口におけ
るチャンネルの幅、Ｒｏはチャンネル出口の平均半径、
モしてＲ６はチャンネル入口の平均半径である）ような
ダイスを通じて押出すことにより繊維配向の半径方向成
分が繊維配向の円周方向成分を越える押出しホースを形
成するものか知られており、その方法により製造された
ホースを切り開き、シートとすることが考えられる。(Prior Art) For example, as described in Japanese Patent Publication No. 58-29231, a composite consisting of an extrudable polymer and discontinuous fibers is formed between the surface of a central mandrel and the surface of an outer die member. A. /AI or about 2 or more than 2 and W. /
W, ÷Ro/R1 is 2 or more than 2 (where Ao is the area of the channel outlet, AI is the area of the channel inlet,
Wo is the width of the channel at the outlet, Wl is the width of the channel at the inlet, Ro is the average radius of the channel outlet,
It is known that an extruded hose can be formed by extruding through a die such that the radial component of the fiber orientation exceeds the circumferential component of the fiber orientation by extruding it through a die such as R6 is the average radius of the channel entrance. It is conceivable to cut the hose produced by this method into sheets.
また、例えば特開昭６０−２１９０３４号公報に記載さ
れるように、弾性体シート内に短繊維群をシート長手方
向に配向埋設せしめたシートをシト幅方向にシート面よ
り垂直方向に裁断して帯状小片群を形成し、該帯状小片
の裁断面をそれぞれ上下両面に位置せしめて隣接する帯
状小片の側面同志を接合してなるシートの製造方法も知
られている。For example, as described in Japanese Patent Application Laid-Open No. 60-219034, a sheet in which a group of short fibers is embedded in an elastic sheet in an oriented manner in the longitudinal direction of the sheet is cut in the width direction perpendicular to the sheet surface. A method for manufacturing a sheet is also known, in which a group of small band-like pieces is formed, the cut surfaces of the small band-like pieces are positioned on the upper and lower surfaces, respectively, and the side surfaces of adjacent small band-like pieces are joined together.
（発明が解決しようとする課題）
ところが、そのような方法では、短繊維かＸ軸方向とＹ
軸方向との中間方向に配向されたシートや、短繊維が配
向された幅の広いシートを得ることは困難であった。(Problem to be solved by the invention) However, in such a method, short fibers are
It has been difficult to obtain a sheet oriented in the middle direction with respect to the axial direction or a wide sheet in which short fibers are oriented.
そこで、本発明は、短繊維がＸ軸方向とＹ軸方向との中
間方向に配向されたシートや、短繊維か配向された幅の
広いシートを得ることかできる短繊維混入ゴムシートの
製造方法を提供することを目的とする。Therefore, the present invention provides a method for producing a rubber sheet containing short fibers, which can produce a sheet in which the short fibers are oriented in the intermediate direction between the X-axis direction and the Y-axis direction, and a wide sheet in which the short fibers are oriented. The purpose is to provide
（課題を解決するための手段）
請求項（１）の発明は、成形ダイの円環状溝を通じて短
繊維混入ゴムを押出すことで短繊維混入ゴム円筒状体を
成形し、該短繊維混入ゴム円筒状体をスパイラル状に切
断して連続シートを得る構成とする。(Means for Solving the Problem) The invention of claim (1) molds a short fiber-mixed rubber cylindrical body by extruding short fiber-mixed rubber through an annular groove of a molding die, and The structure is such that a continuous sheet is obtained by cutting a cylindrical body into a spiral shape.
請求項（２）の発明は、スパイラル状に切断する角度が
、短繊維混入ゴム円筒状体の押出し方向に対して１０〜
８０°の角度をなしている。In the invention of claim (2), the angle at which the spiral cutting is performed is 10 to 10 with respect to the extrusion direction of the short fiber-containing rubber cylindrical body.
It forms an 80° angle.
（作用）
成形ダイの円環状溝を通して短繊維混入ゴムを押出すこ
とで短繊維混入ゴム円筒状体か成形される。該短繊維混
入ゴム円筒状体か、スパイラル状に切断されて連続シー
トが形成される。(Function) By extruding the short fiber mixed rubber through the annular groove of the molding die, a short fiber mixed rubber cylindrical body is formed. The short fiber-mixed rubber cylindrical body is cut into a spiral shape to form a continuous sheet.
（実施例） 以下、本発明の実施例について図面に沿って説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
概略構成を示す第１図において、１は押出し機で、その
フィードロ２より短繊維混入ゴム３を投入し、スクリュ
４によって混練して、押出し機ヘッド１ａに取付けられ
た成形ダイ５の円環状ａ５ａを通して押出すことで、短
繊維混入ゴム円筒状体６を成形するようになっている。In FIG. 1 showing a schematic configuration, reference numeral 1 denotes an extruder, into which rubber 3 mixed with short fibers is introduced through a feedflow 2, kneaded by a screw 4, and then transferred to an annular shape a5a of a molding die 5 attached to an extruder head 1a. The rubber cylindrical body 6 containing short fibers is formed by extruding the rubber through the short fibers.
７はカッター装置で、成形ダイ５上に載置されたモータ
８と、該モータ８によって回転駆動されるギヤ２１と、
成形ダイ５の突出部５ｂに軸受２２を介して回転可能に
支承され上記ギヤ２１と噛合するリングギヤ２３と、該
リングギヤ２３より突設されリングギヤ２３と共に回転
するカッター１０とを有する。カッター装置７のカッタ
ー１０の先端部は短繊維混入ゴム円筒状体６の内部にま
で挿入され、該円筒状体６を外周面側からスパイラル状
に切断して、リボン状ゴムシート１１を形成するように
なっている。なお、スパイラル状に切断する角度が、短
繊維混入ゴム円筒状体６の押出し方向に対して１０°〜
８ｏｏの角度をなすようになっているが、この角度は押
出し速度とカッター１０の回転速度との関係で決まる。7 is a cutter device, which includes a motor 8 placed on the molding die 5 and a gear 21 rotationally driven by the motor 8;
It has a ring gear 23 that is rotatably supported by the protrusion 5b of the molding die 5 via a bearing 22 and meshes with the gear 21, and a cutter 10 that projects from the ring gear 23 and rotates together with the ring gear 23. The tip of the cutter 10 of the cutter device 7 is inserted into the short fiber-mixed rubber cylindrical body 6, and the cylindrical body 6 is cut spirally from the outer circumferential side to form a ribbon-like rubber sheet 11. It looks like this. Note that the angle at which the spiral cutting is performed is 10° to
This angle is determined by the relationship between the extrusion speed and the rotational speed of the cutter 10.
１２は自動巻取機で、スパイラル状に切断されたリボン
状ゴムシート１１を巻き取る主ロール１３と、該主ロー
ル１３に取付部材１４を介して取付けられライナー１５
が巻き付けられている補助ロール１６とを有し、主ロー
ル１３に補助ロール１６よりのライナー１５を介してゴ
ムシート１１を巻き取るようになっている。Reference numeral 12 denotes an automatic winding machine, which includes a main roll 13 for winding up the ribbon-shaped rubber sheet 11 cut into a spiral shape, and a liner 15 attached to the main roll 13 via a mounting member 14.
The rubber sheet 11 is wound around the main roll 13 via a liner 15 from the auxiliary roll 16.
この自動巻取機１２は、回転装置１７に連結され、スパ
イラル状に切断することに基づくリボン状ゴムシート１
１のねじれをほどく方向に自動巻取機１２を回転するよ
うになっている。すなわち、自動巻取機１２の取付部材
１４が、連結部材１８を介してモータ１９に連結され、
該モータ１９の回転により、自動巻取機１２を回転する
ようになっている。This automatic winding machine 12 is connected to a rotating device 17, and the ribbon-shaped rubber sheet 1 is cut into a spiral shape.
The automatic winder 12 is rotated in the direction of untwisting the winder 1. That is, the mounting member 14 of the automatic winder 12 is connected to the motor 19 via the connecting member 18,
The rotation of the motor 19 causes the automatic winder 12 to rotate.
続いて、上記装置によるゴムシートの製造方法について
説明する。Next, a method for manufacturing a rubber sheet using the above apparatus will be explained.
まず、必要に応じて周知の接着処理を施した繊維を数ミ
リの長さに切断して短繊維を形成し、それを予め周知の
方法で所定の薬品を練り混んだ未加硫ゴムに対して、数
容量％〜３０容量％加えて、混合分散させる。First, fibers that have been subjected to a well-known adhesive treatment are cut into lengths of several millimeters if necessary to form short fibers, which are then applied to unvulcanized rubber that has been kneaded with a prescribed chemical using a well-known method. Add several % to 30 % by volume and mix and disperse.
このようにして得られた短繊維混入ゴムをテープ状に切
断あるいはペレットにして、押出し機１に対してフィー
ドロ２を通じて供給する。The short fiber-containing rubber thus obtained is cut into tape shapes or made into pellets, and fed to the extruder 1 through the feeder 2.
フィードロ２を通じて供給された短繊維混入ゴム３はス
クリュ４でウオーマされ、成形ダイ５を通じて短繊維混
入ゴム中の短繊維が主として一方向に配向された短繊維
混入ゴム円筒状体６が押出される。なお、円筒状体６の
軸方向、円筒状体６の円周方向及び円筒状体６の半径方
向の短繊維配向率は成形ダイ５の選択によって定まる。The short fiber mixed rubber 3 supplied through the feeder 2 is warmed by a screw 4, and is extruded through a forming die 5 into a short fiber mixed rubber cylindrical body 6 in which the short fibers in the short fiber mixed rubber are mainly oriented in one direction. . The short fiber orientation ratio in the axial direction of the cylindrical body 6, the circumferential direction of the cylindrical body 6, and the radial direction of the cylindrical body 6 is determined by the selection of the forming die 5.
成形ダイ５より押出された短繊維混入ゴム円筒状体６は
、モータ８によって円周方向に回転されているカッター
装置７のカッター１０によってスパイラル状に直ちに切
断される。The short fiber-mixed rubber cylindrical body 6 extruded from the forming die 5 is immediately cut into a spiral shape by a cutter 10 of a cutter device 7 which is rotated in the circumferential direction by a motor 8.
切断された短繊維混入ゴムはリボン状ゴムシト１１とな
り、自動巻取機１２に巻き取られるか、巻き取られる際
に、巻取機１２が、短繊維混入ゴム円筒状体６をスパイ
ラル状に切断することに基づくリボン状ゴムシート１１
のねしれをほどく方向に回転装置１７によって回転せし
められて、通常の連続シートとして主ロール１３に巻き
取られる。この巻取りの際に、補助ロール１６よりのラ
イナー１５も一緒に巻き取られる。なお、切断したリボ
ン状ゴムシートが常に通常の連続シートになるように、
回転装置１７による自動巻取機１２の回転速度か定めら
れ、また、連続シートか常に一定の厚さで巻かれるよう
に自動巻取機１２の巻取速度か定められる。The cut short fiber-mixed rubber becomes a ribbon-like rubber sheet 11, and is wound up by an automatic winding machine 12, or when being wound up, the winding machine 12 cuts the short fiber-mixed rubber cylindrical body 6 into a spiral shape. Ribbon-shaped rubber sheet 11 based on
The sheet is rotated by a rotating device 17 in a direction to untwist it, and is wound onto the main roll 13 as a normal continuous sheet. During this winding, the liner 15 from the auxiliary roll 16 is also wound up. In addition, so that the cut ribbon-shaped rubber sheet always becomes a normal continuous sheet,
The rotation speed of the automatic winder 12 by the rotating device 17 is determined, and the winding speed of the automatic winder 12 is also determined so that the continuous sheet is always wound with a constant thickness.
上記スパイラル状に切断する切断角度は、押出し速度に
対し、カッター１０の回転速度を調節することにより任
意に設定でき、これによって短繊維がシートの長手方向
と幅方向との中間の任意の方向に配向されたシートを得
ることができる。また、押出し速度を早くして、カッタ
ー１０の回転速度を遅くすれば、幅の広い連続シートが
得られる。The cutting angle at which the spiral cutting is performed can be arbitrarily set by adjusting the rotational speed of the cutter 10 with respect to the extrusion speed, so that the short fibers can be cut in any direction between the longitudinal direction and the width direction of the sheet. Oriented sheets can be obtained. Further, by increasing the extrusion speed and decreasing the rotation speed of the cutter 10, a wide continuous sheet can be obtained.
すなわち、成形ダイ５の外径をＤ １１１１１ ％押出
し速度Ａ ｃｍ／ｍ１ｎ−、カッター１０の回転速度を
ｎｒｐ＋１１とすると、得られる連続シートのシート幅
はＡ／ｎ＋ｎｍ、配向はｔａｎ（Ａ／＋ｎＤ）である。That is, if the outer diameter of the forming die 5 is D11111%, the extrusion speed is A cm/m1n-, and the rotational speed of the cutter 10 is nrp+11, then the sheet width of the resulting continuous sheet is A/n+nm, and the orientation is tan(A/+nD). It is.
また、自動巻取機の巻取速度はｎπＤであり、巻取機の
回転速度はカッターの回転速度と、回転方向はカッター
の回転方向とそれぞれ一致する。Further, the winding speed of the automatic winding machine is nπD, the rotational speed of the winding machine matches the rotational speed of the cutter, and the rotation direction matches the rotation direction of the cutter.
なお、カッター装置７と自動巻取＃！１２の間に冷却装
置を設けるようにすることもできる。In addition, cutter device 7 and automatic winding #! A cooling device may also be provided between 12.
（発明の効果）
請求項（１）及び請求項（２）の発明は、上記のように
構成したから、短繊維がシートの長手方向と幅方向との
中間方向に配向されたシートや、幅の広いシートを得る
ことができる。(Effect of the invention) Since the inventions of claims (1) and (2) are constructed as described above, the invention can be applied to a sheet in which short fibers are oriented in the intermediate direction between the longitudinal direction and the width direction of the sheet, and You can get a wide seat.
第１図は本発明方法に用いる装置の概略構成図である。 １・・・・・・押出し機 ５・・・・・・成形ダイ ５ａ・・・・・・円環状溝 FIG. 1 is a schematic diagram of an apparatus used in the method of the present invention. 1...Extruder 5... Molding die 5a... Circular groove
Claims (2)
出すことで短繊維混入ゴム円筒状体を成形し、該短繊維
混入ゴム円筒状体をスパイラル状に切断して連続シート
を得ることを特徴とする短繊維混入ゴムシートの製造方
法。(1) Forming a short fiber-mixed rubber cylindrical body by extruding short fiber-mixed rubber through an annular groove of a molding die, and cutting the short fiber-mixed rubber cylindrical body into a spiral shape to obtain a continuous sheet. A method for producing a short fiber-mixed rubber sheet characterized by:
円筒状体の押出し方向に対して１０〜８０°の角度をな
しているところの請求項（１）記載の短繊維混入ゴムシ
ートの製造方法。(2) Production of the short fiber-mixed rubber sheet according to claim (1), wherein the spiral cutting angle is 10 to 80 degrees with respect to the extrusion direction of the short fiber-mixed rubber cylindrical body. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2253151A JPH04129721A (en) | 1990-09-20 | 1990-09-20 | Production of staple-containing rubber sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2253151A JPH04129721A (en) | 1990-09-20 | 1990-09-20 | Production of staple-containing rubber sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04129721A true JPH04129721A (en) | 1992-04-30 |
Family
ID=17247234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2253151A Pending JPH04129721A (en) | 1990-09-20 | 1990-09-20 | Production of staple-containing rubber sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04129721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7128853B2 (en) * | 2002-09-11 | 2006-10-31 | Mitsuboshi Belting Ltd. | Method and apparatus for manufacturing a rubber sheet containing short fibers |
-
1990
- 1990-09-20 JP JP2253151A patent/JPH04129721A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7128853B2 (en) * | 2002-09-11 | 2006-10-31 | Mitsuboshi Belting Ltd. | Method and apparatus for manufacturing a rubber sheet containing short fibers |
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