JPS6121043B2 - - Google Patents

Description

【発明の詳細な説明】 本発明は、円盤型排ワラカツタに関する。[Detailed description of the invention] TECHNICAL FIELD The present invention relates to a disc-shaped straw cutter.

上記円盤型排ワラカツタは、平行に支承した二
本の回転軸に、円盤刃をその軸芯方向に一定ピツ
チで並置固着したものであつて、従来一般に、互
いの回転軸の回転速度を異ならせ、低速刃にのつ
かかつた排ワラに対し、高速刃にて引き作用させ
て排ワラの細断を行つていたために、単位時間当
りの高速刃の摩耗進度が早くなり、短時間で高速
刃を取り替えなければならなかつた。また、低速
刃と高速刃の摩耗進度が異なるために、煩雑な交
換作業を頻繁に行わなくてはならず作業性に欠け
るものであつた。 The above-mentioned disk-shaped waste straw vine has two rotating shafts supported in parallel, and the disk blades are fixed side-by-side at a constant pitch in the axial direction of the shafts. Since the waste straw stuck to the low-speed blade was shredded by the high-speed blade by pulling it, the wear rate of the high-speed blade per unit time was accelerated, and the high-speed blade could be used in a short period of time. I had to replace the blade. Further, since the rate of wear of the low-speed blade and the high-speed blade is different, complicated replacement work must be performed frequently, resulting in a lack of workability.

本発明は、上記実情に鑑みて、円盤刃の摩耗進
度を均一にしてカツタ機能を長期間維持させると
共に、円盤刃の交換作業を効果的に行えるように
することを目的とする。 In view of the above circumstances, it is an object of the present invention to maintain the cutter function for a long period of time by uniformizing the progress of wear of the disc blade, and to enable effective replacement of the disc blade.

次に、本発明の実施例を図面に基づいて説明す
る。 Next, embodiments of the present invention will be described based on the drawings.

第１図に示すように、カツタケース１に互いに
平行に支承した二本の回転軸２，２夫々に、大径
の巻付き防止用ドラム３を介して軸芯方向に一定
ピツチで、かつ、その回転軌跡を重複させて略同
仕様の円盤刃４，４を並置固着すると共に、前記
回転軸２，２を伝動機構５を介して略同速度で駆
動回動すべく構成してある。 As shown in FIG. 1, two rotating shafts 2, 2 supported parallel to each other in a cutter case 1 are connected to each other at a constant pitch in the axial direction via a large-diameter anti-wrapping drum 3. The disk blades 4, 4 having substantially the same specifications are fixed side by side with their rotational trajectories overlapping, and the rotary shafts 2, 2 are driven and rotated at substantially the same speed via a transmission mechanism 5.

前記巻付き防止用ドラム３には、前記円盤刃４
より小径の回転体部分７から半径方向での外方側
に向けて、前記円盤刃４より大径の外周軌跡を描
き、且つ、回転方向での前縁側に大きな逃げ角θ
を有する掻込み用突起を突設して構成される回転
体６を設けてある。 The wrapping prevention drum 3 includes the disc blade 4.
An outer circumferential locus with a larger diameter than the disk blade 4 is drawn outward in the radial direction from the rotating body portion 7 having a smaller diameter, and a large relief angle θ is formed on the leading edge side in the rotational direction.
A rotating body 6 is provided with protruding protrusions for scraping.

上記構成によると、供給された排ワラは高速回
転する円盤刃４，４によつて跳ね返される傾向と
なるが、回転体６の突起８の係止作用で円盤刃４
に押しつけられる。この場合突起８には大きい逃
げ角が形成されているために円盤刃４，４間への
強力な掻込み作用はなく、円盤刃４への適度の押
しつけ状態となり、高速円盤刃４による引き切り
切断が行われる。 According to the above configuration, the supplied waste straw tends to be bounced back by the disk blades 4 rotating at high speed, but due to the locking action of the protrusion 8 of the rotating body 6, the disk blades 4
be forced to. In this case, since the protrusion 8 has a large relief angle, there is no strong scraping action between the disk blades 4, 4, and the disk blade 4 is in a moderately pressed state, and the high-speed disk blade 4 pulls off. A disconnection is made.

尚、前記回転体６を巻付き防止用ドラム３と別
体構成してもよい。 Incidentally, the rotating body 6 may be constructed separately from the wrapping prevention drum 3.

以上要するに、本発明による円盤型排ワラカツ
タは、平行に支承した一対の回転軸２，２を略同
速で駆動するとともに、両回転軸２，２には回転
軌跡を重複させた略同仕様の円盤刃４，４の対を
一定ピツチで並置固着し、各回転軸２，２ごとに
並置された円盤刃群４……４……の間には、前記
円盤刃４より小径の回転体部分７から半径方向で
の外方側に向けて、前記円盤刃４より大径の外周
軌跡を描き、且つ、回転方向での前縁側に大きな
逃げ角θを有する掻込み用突起８を突設して構成
される回転体６を固着してあることを特徴とす
る。 In summary, the disk-shaped straw removal ivy according to the present invention drives a pair of rotating shafts 2, 2 supported in parallel at substantially the same speed, and has substantially the same specifications with overlapping rotational trajectories for both rotating shafts 2, 2. Pairs of disk blades 4, 4 are fixed side by side at a constant pitch, and a rotating body portion having a smaller diameter than the disk blade 4 is provided between the disk blade groups 4...4... arranged side by side for each rotating shaft 2, 2. A scraping protrusion 8 is provided protruding outward from 7 in the radial direction, drawing an outer peripheral locus having a larger diameter than the disk blade 4, and having a large clearance angle θ on the leading edge side in the rotation direction. It is characterized by having a rotating body 6 fixed thereto.

つまり、逃げ角の大きい掻き込み用突起８にて
排ワラを円盤刃４，４で跳ねとばされないように
適当に押圧させながら引き切り細断するようにし
てあるので、円盤刃４，４を同速回転させながら
も、従来構造のように円盤刃４，４の回転数を異
ならせて排ワラ細断を行うのと同等な引き切り切
断を行うことができ、しかも両回転刃４，４は対
等に働くので摩耗進度は均一となり、円盤刃４，
４を部分的に頻繁に取り替えることなくカツタ機
能を長期間維持でき、したがつて煩雑な円盤交換
作業においては一挙に全円盤刃４を交換すればよ
いので作業性の勝れたものとなつた。 In other words, the scraping protrusion 8 with a large relief angle is used to properly press the waste straw to prevent it from being blown away by the disk blades 4, 4, while pulling it into pieces. Even though the disk blades 4, 4 rotate at the same speed, it is possible to perform pull-cutting that is equivalent to shredding waste straw by changing the rotation speed of the disk blades 4, 4 as in the conventional structure. work equally, so the wear rate is uniform, and the disc blades 4,
The cutter function can be maintained for a long period of time without having to frequently replace parts of the blade 4, and therefore, instead of the complicated work of replacing the discs, all the disc blades 4 can be replaced at once, resulting in superior work efficiency. .

更に、本考案によれば同じ円盤刃４群を対向さ
せれるので製作及び、組付においても有利なもの
となつた。 Furthermore, according to the present invention, the same four groups of disk blades can be opposed, which is advantageous in manufacturing and assembly.

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

図面は本発明に係る円盤型排ワラカツタの実施
例を示し、第１図は横断平面図、第２図は第１図
の―線断面図である。 ２……回転軸、４……円盤刃、６……回転体、
７……回転体部分、８……掻込み用突起。 The drawings show an embodiment of the disc-shaped waste straw ivy according to the present invention, and FIG. 1 is a cross-sectional plan view, and FIG. 2 is a cross-sectional view taken along the line -- in FIG. 1. 2...Rotating shaft, 4...Disc blade, 6...Rotating body,
7... Rotating body part, 8... Scratching protrusion.

Claims (1)

【特許請求の範囲】[Claims] １ 平行に支承した一対の回転軸２，２を略同速
で駆動するとともに、両回転軸２，２には回転軌
跡を重複させた略同仕様の円盤刃４，４の対を一
定ピツチで並置固着し、各回転軸２，２ごとに並
置された円盤刃群４……，４……の間には、前記
円盤刃４より小径の回転体部分７から半径方向で
の外方側に向けて、前記円盤刃４より大径の外周
軌跡を描き、且つ、回転方向での前縁側に大きな
逃げ角θを有する掻込み用突起８を突設して構成
される回転体６を固着してあることを特徴とする
円盤型排ワラカツタ。1 A pair of rotating shafts 2, 2 supported in parallel are driven at approximately the same speed, and a pair of disk blades 4, 4 with approximately the same specifications and overlapping rotational trajectories are mounted on both rotating shafts 2, 2 at a constant pitch. Between the disc blade groups 4..., 4..., which are fixed in parallel and are arranged in parallel for each rotating shaft 2, 2, there is a blade extending outward in the radial direction from the rotating body portion 7 having a smaller diameter than the disc blade 4. A rotating body 6 is fixed to the rotating body 6, which has a protrusion 8 protruding from the outer circumference having a larger diameter than the disc blade 4 and has a large relief angle θ on the front edge side in the rotation direction. A disc-shaped straw ivy characterized by the fact that it has a