JPH0732292A - Sheet cutting device - Google Patents

Sheet cutting device

Info

Publication number
JPH0732292A
JPH0732292A JP17954093A JP17954093A JPH0732292A JP H0732292 A JPH0732292 A JP H0732292A JP 17954093 A JP17954093 A JP 17954093A JP 17954093 A JP17954093 A JP 17954093A JP H0732292 A JPH0732292 A JP H0732292A
Authority
JP
Japan
Prior art keywords
blade
frame
cutting
fixed
movable blade
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
Application number
JP17954093A
Other languages
Japanese (ja)
Inventor
Junichi Nakao
順一 中尾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yasugi Seimitsu Ltd
Proterial Ltd
Original Assignee
Hitachi Metals Ltd
Yasugi Seimitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Metals Ltd, Yasugi Seimitsu Ltd filed Critical Hitachi Metals Ltd
Priority to JP17954093A priority Critical patent/JPH0732292A/en
Publication of JPH0732292A publication Critical patent/JPH0732292A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To provide a sheet cutting device capable of keeping the optimum pressure-contacting force to perform stable cutting from cut-beginning to cut- finishing without the defectiveness of a conventional Guillotine sheet cutter. CONSTITUTION:In a sheet cutting device composed of a fixed blade 2 fixed to a frame 21, a movable blade 1 having a blade edge recessed in a reverse-V- shaped state and pressure-contacting the blade edge of the fixed blade 2 to be slided, and a thin platelike frame 21 thereon the movable blade 1 is to be mounted, a notched hole or a notched groove is provided on the frame 21 and the bending of the frame 21 is caused in an after half part in cutting to restrain the pressure-contacting force of the fixing blade 2 and the movable blade 1 each other.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、各種プリンタ、通信用
ファクシミリ、複写機等に搭載され、ロール状に巻かれ
た記録紙や折り畳み連続紙を全幅切断(フルカット)ま
たは切残し切断(パーシャルカット)するためのシート
切断装置に関する。より詳しくは、固定刃が固着される
フレームが撓みを生じながら、切断が進行する切断装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on various printers, communication facsimiles, copiers, etc., and cuts recording paper or folding continuous paper wound in a roll shape into full width (full cut) or uncut (partial) cuts. Sheet cutting device for cutting. More specifically, the present invention relates to a cutting device in which cutting progresses while a frame to which a fixed blade is fixed is bent.

【0002】[0002]

【従来の技術】記録紙の幅が概ね150mm以下の各種のプ
リンタ等に搭載されるシート切断装置は、全幅切断 (以
下フルカットと称す) したり、切残し切断 (以下パーシ
ャルカットと称す) したりする機能を必要とし、さらに
小型軽量化するために、カッタ部、駆動部をそれぞれ小
型化する必要もある。従来からシート切断装置には、通
常ロータリ式と称する切断装置が多く用いられている
が、このロータリ式切断装置は、構造上の制約があっ
て、パーシャルカットができないので、パーシャルカッ
トが必要な各種のプリンタ等には搭載できなかった。こ
のため、フルカットとパーシャルカットが任意に選択で
きる構造の各種のプリンタ用の切断装置としては、鋸刃
状刃物を用いる切断装置、および可動刃と固定刃が交差
圧接され、可動刃が固定刃に対し上下に移動する通称ギ
ロチン式と呼ばれる切断装置が多用されている。
2. Description of the Related Art A sheet cutting device mounted on various printers having a recording paper width of approximately 150 mm or less is capable of performing full-width cutting (hereinafter referred to as full cut) or uncut cutting (hereinafter referred to as partial cut). In order to reduce the size and weight, it is necessary to reduce the size of the cutter unit and the drive unit. Conventionally, as a sheet cutting apparatus, a cutting apparatus generally called a rotary type is often used, but this rotary cutting apparatus has a structural limitation and cannot perform a partial cut. Could not be installed in the printer, etc. For this reason, as a cutting device for various printers having a structure in which full cut and partial cut can be arbitrarily selected, a cutting device using a saw-toothed blade, a movable blade and a fixed blade are cross-pressed, and the movable blade is fixed. On the other hand, a cutting device commonly called a guillotine type that moves up and down is often used.

【0003】ギロチン式のものとしては、特開平01-289
697号公報には、刃先線が逆V字形に窪んだ薄板状の可
動刃の刃先と、相手側の固定刃の刃先が交差圧接しなが
ら両端から中央に向かって切断する装置が開示されてい
る。この切断装置は、可動刃または固定刃のいずれか一
方に圧接方向の反りを付与して噛込み角を形成し、可動
刃の一部に切欠きを設けてパーシャルカットをするもの
である。
A guillotine type is disclosed in Japanese Patent Laid-Open No. 01-289.
Japanese Patent No. 697 discloses a device in which the blade edge of a thin plate-shaped movable blade having a concave V-shaped concave line and the blade edge of a fixed blade on the opposite side are cross-pressed and cut from both ends toward the center. . In this cutting device, one of the movable blade and the fixed blade is warped in the pressure contact direction to form a biting angle, and a cutout is provided in a part of the movable blade to perform a partial cut.

【0004】[0004]

【発明が解決しようとする課題】近年ミニプリンタ等に
搭載されるシート材切断装置は、駆動部を搭載してフル
カットとパーシャルカットの2種類の切断機能をもち、
低価格で小型軽量化した切断装置の要求が多くなってき
た。
In recent years, a sheet material cutting device mounted on a mini printer or the like has a drive unit and has two types of cutting functions of full cut and partial cut.
There has been an increasing demand for cutting devices that are low in price and small in size and weight.

【0005】さらに、実開平01-289697号公報に記載の
切断装置では、刃先線が逆V字形に窪んだ可動刃とこれ
に真直な刃先線を圧接する固定刃との一対の刃物で用紙
を切断するので、鋏と同じ原理で切断ができて信頼性の
高い構造であり、しかも必要に応じて用紙に部分的に切
り残しを設けることが可能である。
Further, in the cutting device described in Japanese Utility Model Laid-Open No. 01-289697, a sheet of paper is cut by a pair of blades including a movable blade having a concave V-shaped cutting edge line and a fixed blade for pressing a straight cutting edge line against the movable blade. Since it is cut, it has a highly reliable structure that can be cut according to the same principle as scissors, and it is possible to partially leave an uncut portion on the paper if necessary.

【0006】しかし、この切断装置は、噛込み角を得る
ため、可動刃と固定刃のいずれか一方に圧接方向に凸と
なるような反りを付与する手段を講じなければならない
し、また、圧接力は固定刃の撓みか、または固定刃をば
ねによって可動刃に圧接することによって得るものであ
る。このため、部品点数と組立工数が増加するという不
具合がある。この欠点を排除するため、図2に示すよう
な簡単な構造のギロチン式の切断装置が多用されるよう
になってきた。
However, in order to obtain the biting angle, this cutting device must be provided with a means for imparting a warp to one of the movable blade and the fixed blade so as to be convex in the pressure contact direction, and the pressure contact is required. The force is obtained by bending of the fixed blade or by pressing the fixed blade against the movable blade by a spring. Therefore, there is a problem that the number of parts and the number of assembling steps increase. In order to eliminate this drawback, a guillotine-type cutting device having a simple structure as shown in FIG. 2 has been widely used.

【0007】図2に示すようなこの切断装置は、可動刃
の中央に設けられたスライダが薄板状で弾性を有するフ
レームの長孔内に往復運動できるようにして、可動刃と
板ナットの間にサンドイッチ状に装着されている。そし
て、スライダが長孔内で摺動しながら往復運動するため
には、スライダが長孔よりも僅かに小径寸法であるとと
もに、フレームよりも僅かに厚肉であることが必要であ
る。さらに、図2に示す切断装置は、固定刃の厚みに応
じて、可動刃または、フレームが撓むことによって、固
定刃と可動刃との相互の圧接力が得られる構造である。
また、可動刃は、フレームに固着された固定刃の上に重
ね合わせて組み立てられているから、固定刃の厚みに相
当する段差分だけ刃先同士が干渉し、この干渉によりフ
レームに撓みが生じ、刃先同士の圧接力を得る構造とな
っている。現在この構造がミニプリンタ用切断装置とし
て最も多く用いられている。
In this cutting device as shown in FIG. 2, a slider provided at the center of the movable blade is reciprocated in a long hole of a thin plate-like frame having elasticity so that the slider can be moved between the movable blade and the plate nut. It is attached to a sandwich. In order for the slider to reciprocate while sliding in the elongated hole, it is necessary that the slider has a diameter slightly smaller than that of the elongated hole and a thickness slightly larger than that of the frame. Further, the cutting device shown in FIG. 2 has a structure in which the movable blade or the frame is bent in accordance with the thickness of the fixed blade, so that the pressure contact force between the fixed blade and the movable blade is obtained.
In addition, since the movable blade is assembled by stacking it on the fixed blade fixed to the frame, the blade edges interfere with each other by a step corresponding to the thickness of the fixed blade, and the interference causes bending of the frame. It has a structure to obtain the pressure contact force between the cutting edges. At present, this structure is most often used as a cutting device for mini-printers.

【0008】しかしながら、この種のギロチン式の切断
装置の欠点は、ミニプリンタ用のカッタのように切断幅
が小さく、装置の幅が短い小型のカッタの場合は、その
フレームの幅が小さいために剛性が上がる傾向にあり、
可動刃とフレームの撓みによって固定刃と可動刃の圧接
力を得ているこの種のカッタでは、圧接力の調整ができ
なくなり、刃先に過大な圧接力を生じ安定な切断を行う
ことが難しくなる。特に、フレームの撓み量が最も多く
必要となる切断中央部、すなわち切断の後半でその傾向
が顕著に現れる。一方、可動刃と固定刃との間に発生す
る圧接力およびフレームに発生する撓みはフレームの寸
法形状、厚さ、可動刃の寸法形状、厚さ等によって千差
万別であり、また可動刃を台金に装着するか否かによっ
ても変化する。
However, a drawback of this type of guillotine-type cutting device is that the cutting width is small like a cutter for a mini printer, and a small cutter with a short device width has a small frame width. Rigidity tends to increase,
With this type of cutter that obtains the pressure contact force between the fixed blade and the movable blade due to the bending of the movable blade and the frame, it becomes impossible to adjust the pressure contact force, and it becomes difficult to perform stable cutting due to excessive pressure contact force at the cutting edge. . In particular, the tendency becomes remarkable in the cutting central portion where the bending amount of the frame is required most, that is, in the latter half of the cutting. On the other hand, the pressure contact force generated between the movable blade and the fixed blade and the flexure generated in the frame are different depending on the size and shape of the frame, the size and shape of the movable blade, the thickness, etc. It also changes depending on whether or not the base metal is attached.

【0009】本発明は、上述した従来からの切断装置の
問題点を解消し、簡素化された構造で信頼性が高く、小
型の駆動源による切断を可能としたギロチン式のミニプ
リンタ用カッタにおいて、特に切断幅が短くカッタのフ
レーム幅が小さい小型のカッタにおいて、固定刃が固着
され、可動刃が摺動自在に装着されるフレームを比較的
撓みやすい形状とすることによって、刃先の適切な圧接
力を維持して、安定した切断を可能とするシート材切断
装置を提供することを目的とするものである。
The present invention is a guillotine-type cutter for a mini printer which solves the above-mentioned problems of the conventional cutting device, has a simplified structure, is highly reliable, and can be cut by a small drive source. , Especially in a small cutter with a short cutting width and a small cutter frame width, the fixed blade is fixed and the movable blade is slidably mounted so that the frame has a relatively flexible shape, so that the blade is properly pressed. An object of the present invention is to provide a sheet material cutting device that maintains a force and enables stable cutting.

【0010】[0010]

【課題を解決するための手段】本発明は、前述の問題点
を解消すべく、検討した結果、薄板状の可動刃の刃先に
固定刃の刃先を圧接して切断するシート切断装置におい
て、切断開始から終了までほぼ一定でしかも適度な圧接
力を付与するためには、可動刃を作動させるスライダが
摺動自在に装着されるフレームのスライド孔の周辺部に
切欠孔や切欠溝を設け、フレームを撓み易い構造とする
ことで問題点が解消できることを見出したものである。
カッタの切断幅が短くなるのに伴いフレームの幅も小さ
いものとなりフレームは撓み難い構造となるため、切り
終わりに近づくほど圧接力が高くなる。この現象をフレ
ームを撓み易い形状とすることで、切り始めから切り終
わりまで相互の刃先に加わる圧接力を適切な状態で維持
することを特徴としている。
DISCLOSURE OF THE INVENTION The present invention has been studied in order to solve the above-mentioned problems, and as a result, as a result of a study, in a sheet cutting apparatus for cutting the blade edge of a thin plate-shaped movable blade by press-contacting the blade edge of a fixed blade, In order to apply a constant pressure contact force that is almost constant from the start to the end, a cutout hole or cutout groove is provided in the periphery of the slide hole of the frame in which the slider that operates the movable blade is slidably mounted. It has been found that the problem can be solved by making the structure easy to bend.
As the cutting width of the cutter becomes shorter, the width of the frame becomes smaller and the frame becomes a structure that is difficult to bend. Therefore, the pressure contact force becomes higher as the cutting end is approached. This phenomenon is characterized in that the frame is made to bend easily so that the pressure contact forces applied to the blade edges are maintained in an appropriate state from the beginning to the end of cutting.

【0011】すなわち、本発明は、固定刃と、逆V字状
に窪んだ刃先を有し、刃先を固定刃の刃先に圧接して摺
動する可動刃と、固定刃が固着され、可動刃が摺動可能
に装着される薄板状のフレームからなるシート切断装置
において、薄板状のフレームは、切欠孔または切欠溝を
有し、切断の後半部分で撓みを生じて、固定刃と可動刃
との相互の圧接力の増加を抑制することを特徴とするシ
ート切断装置である。
That is, according to the present invention, the movable blade has a fixed blade and an inverted V-shaped recessed edge, and the movable blade is fixed to the movable blade and presses against the blade edge of the fixed blade to slide. In a sheet cutting device that is slidably mounted on a thin plate-shaped frame, the thin plate-shaped frame has a notch hole or a notch groove, and bending occurs in the latter half of the cutting, so that the fixed blade and the movable blade are The sheet cutting apparatus is characterized in that it suppresses an increase in mutual pressure contact force.

【0012】そして、シートが通る通過窓と可動刃を可
動させるスライド孔を有する薄板状のフレームと、フレ
ームの通過窓の近傍に固着された固定刃と、逆V字状に
窪んだ刃先を有しフレームに設けられたスライド孔に摺
動可能に嵌入されたスライダに可動刃台金と共に固定さ
れて、その刃先を固定刃の刃先に圧接しながら摺動する
可動刃とからなり、薄板状のフレームには、さらに切欠
孔または切欠溝を設けて切断の後半部分でフレームが撓
みを生じて、固定刃と可動刃との相互の圧接力の増加を
抑制することを特徴とするシート切断装置である。フレ
ームを撓み易くするための切欠孔や切欠溝の寸法や形状
は、前述したようにフレーム自身、可動刃、固定刃等の
諸条件によってフレームの撓みが変化するから、これ等
を勘案して設定する。
A thin plate-shaped frame having a passage window through which the sheet passes and a slide hole for moving the movable blade, a fixed blade fixed near the passage window of the frame, and a blade tip recessed in an inverted V shape are provided. A slider that is slidably fitted in a slide hole provided in the frame is fixed together with the movable blade base metal, and the movable blade that slides while pressing the blade edge of the fixed blade into contact with the blade edge of the fixed blade. A sheet cutting apparatus characterized in that a cutout hole or a cutout groove is further provided in the frame, and the frame is bent in the latter half of the cutting to suppress an increase in mutual pressure contact force between the fixed blade and the movable blade. is there. The size and shape of the cutout holes and cutout grooves to make the frame easier to bend are set in consideration of the above because the bending of the frame changes depending on the conditions of the frame itself, movable blades, fixed blades, etc. as described above. To do.

【0013】[0013]

【作用】本発明のシート切断装置では、V字形の刃先線
を有する可動刃と固定刃の双方を順次圧接しながら、刃
先の両端から中央に向かって左右がそれぞれ鋏と同じ噛
込角と剪断角の構造で切断を行う。しかし、鋏と本カッ
タとは大きな相違点があり、鋏は切り始めから切り終わ
りにかけて刃先同士が形成する剪断角が徐々に小さく変
化するのに対し、本発明の切断装置では可動刃の刃先が
V字形であるため剪断角は終始一定である。本発明にお
いて、フレームの剛性は切断時の刃先の圧接に最低限必
要とされる力以上に設定することが必要となる。可動刃
の圧接力よりもフレームの剛性が小さい場合、刃先の噛
み合いが弱くなり、用紙の切断が不安定となるからであ
る。
In the sheet cutting apparatus of the present invention, both the movable blade having the V-shaped cutting edge line and the fixed blade are sequentially pressed, and the left and right sides from the both ends of the cutting edge are the same as the scissors and the shearing angle toward the center. Make a cut with the corner structure. However, there is a big difference between the scissors and the present cutter, and the shear angle of the scissors that the blade edges form gradually changes from the beginning to the end of cutting, while the cutting edge of the movable blade in the cutting device of the present invention is changed. Since it is V-shaped, the shear angle is constant throughout. In the present invention, the rigidity of the frame needs to be set to be equal to or more than the force that is minimum required for the pressure contact of the cutting edge during cutting. This is because when the rigidity of the frame is smaller than the pressure contact force of the movable blade, the meshing of the blade edges becomes weak and the cutting of the paper becomes unstable.

【0014】刃先同士が噛み合いを始め、切断が開始さ
れた時、可動刃は中央の支持部から最も離れた位置で圧
接されるため、フレームの撓み量は最も少ない値を示
す。次に切断が進行して刃先の噛合いが中央部に移動す
るに伴ってフレームの撓み量は大きくなり、中央部の切
り終わり時点では固定刃の厚みとほぼ同じ値の撓み量を
発生する。フレームに切欠孔または切欠溝を設けること
によって切断開始から終了まで適切な圧接力を付与させ
ることで、刃先の噛合いが終始安定となり、刃先の不要
な摩耗を防止することができる。また、可動刃はフレー
ムの適当な撓み発生によりスライド抵抗の変動も少なく
なり切断中央部での可動刃の動作力が軽減され、安定な
切断を維持できるのである。すなわち、本発明は撓みが
生じないか、あるいは生じ難いフレームに切欠孔や切欠
溝を設けて撓みの発生を助長させ、適切な圧接力を得る
ことに特徴を有するのである。
When the cutting edges start to mesh with each other and the cutting is started, the movable blade is pressed against the central support portion at a position farthest from the central support portion, so that the bending amount of the frame shows the smallest value. Next, as the cutting progresses and the meshing of the cutting edges moves to the central portion, the amount of bending of the frame increases, and at the end of cutting of the central portion, the amount of bending that is substantially the same as the thickness of the fixed blade is generated. By providing an appropriate pressure contact force from the start to the end of cutting by providing the frame with a notch hole or a notch groove, the engagement of the cutting edge is stable from beginning to end, and unnecessary wear of the cutting edge can be prevented. Further, the movable blade is less likely to change in slide resistance due to the proper bending of the frame, and the operating force of the movable blade at the cutting center is reduced, so that stable cutting can be maintained. That is, the present invention is characterized in that the frame is provided with notch holes or notch which is not easily or hardly deflected to promote the occurrence of the deflection and to obtain an appropriate pressure contact force.

【0015】[0015]

【実施例】次に実施例と図面に基づいて本発明を詳細に
説明する。図1は本発明のシート切断装置の一実施例を
示すもので、(a)は切断装置の構造を示す組立概念
図、(b)はその断面図である。可動刃刃材12は、厚
さ 0.3mmの焼入れ熱処理された炭素工具鋼 (JIS SK5)
で製作し、かつ刃幅が50mmの逆V字型に窪んだ可動刃刃
先11を有している。可動刃台金13は、可動刃刃材よ
りも厚くして1.2mmの板材で製作し、フレーム21の板
厚(1.2mm)よりも僅かに0.2mm厚くしたスライダ15を介
在させ、可動刃刃材12と共に板ナット16とビス14
を用いて、スライダ15がスライド孔26内を摺動自在
に装着することによって作動するようにした。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to embodiments and drawings. 1A and 1B show an embodiment of a sheet cutting apparatus of the present invention. FIG. 1A is an assembly conceptual diagram showing the structure of the cutting apparatus, and FIG. 1B is a sectional view thereof. The movable blade blade material 12 is a 0.3 mm thick carbon tool steel (JIS SK5) that has been quenched and heat treated.
And has a movable blade edge 11 which is recessed in an inverted V shape having a blade width of 50 mm. The movable blade base metal 13 is made of a plate material having a thickness of 1.2 mm, which is thicker than the movable blade blade material, and has a slider 15 which is slightly thicker than the plate thickness (1.2 mm) of the frame 21 by 0.2 mm. Plate nut 16 and screw 14 together with material 12
The slider 15 is slidably mounted in the slide hole 26 so that the slider 15 operates.

【0016】厚さを1.2mmとしたフレーム21に設ける
スライド孔26の近傍には、L字形状の切欠孔25とシ
ートの通過窓である通紙窓24を設け、さらに通紙窓2
4の下方に0.7mm厚さの固定刃刃材22を接着剤で固定
した。固定刃刃材22はフレームの固定刃刃材22が固
定される部位と共に、可動刃12に対し凸状となるよう
な中高形状にプレス加工して噛込角を形成させた。通紙
窓24を通して送られてくる用紙(図示せず)は可動刃
1が図面上の下方に移動することによって、用紙の両端
より切断を開始し、中央部で切断を終了する。そして、
可動刃の行程を制御すれば、フルカットとパーシャルカ
ットが自由に選択できる。
In the vicinity of the slide hole 26 provided in the frame 21 having a thickness of 1.2 mm, an L-shaped cutout hole 25 and a sheet passing window 24 which is a sheet passing window are provided.
A fixed blade blade member 22 having a thickness of 0.7 mm was fixed to the lower part of 4 with an adhesive. The fixed blade blade member 22 was press-formed into a convex shape with respect to the movable blade 12 along with the portion of the frame to which the fixed blade blade member 22 was fixed to form a biting angle. The sheet (not shown) fed through the sheet passing window 24 starts to be cut from both ends of the sheet when the movable blade 1 moves downward in the drawing, and ends at the central portion. And
Full cut and partial cut can be freely selected by controlling the stroke of the movable blade.

【0017】フレーム21に設けたL字形状の切欠孔2
5によりフレーム21が撓み易い構造となるので、切断
中央部となる切終りほど、フレームの撓みが大きくなっ
て圧接力の著しい上昇を抑え、切り始めから切り終わり
まで適切な圧接力を維持しながら安定した切断を行うこ
とができる。図3、図4は、本発明の他の実施例を示す
フレームの斜視図である。フレームを撓みやすい形状と
する方法は、フレームの端部(左右、上下)に開口した
種々の形状の溝を設けて切欠溝としてもよいし、切欠孔
も角、丸あるいはその他の任意の形状としてもよい。本
実施例では、噛込角を形成するために、固定刃およびフ
レームの固定刃が固定された部位とを一緒に、圧接方向
に中高となるようにプレス加工を施したが、同じように
して可動刃のみ圧接方向に凸となるように加工してもよ
いし、その他種々の方法で噛込角を形成すればよい。
An L-shaped cutout hole 2 provided in the frame 21
Since the frame 21 has a structure that is easily bent due to 5, the bending of the frame becomes larger toward the cutting end, which is the center of cutting, and a significant increase in the pressing force is suppressed, while maintaining an appropriate pressing force from the start of cutting to the end of cutting. Stable cutting can be performed. 3 and 4 are perspective views of a frame showing another embodiment of the present invention. As a method of making the frame easily bendable, grooves of various shapes opened at the end portions (left and right, top and bottom) of the frame may be provided as cutout grooves, or the cutout holes may be formed into corners, circles, or any other shape. Good. In the present embodiment, in order to form the biting angle, the fixed blade and the portion of the frame where the fixed blade is fixed were pressed together so as to have a middle height in the pressure contact direction, but in the same manner. Only the movable blade may be processed so as to be convex in the pressure contact direction, or the biting angle may be formed by various other methods.

【0018】[0018]

【発明の効果】本発明は、逆V字形に窪んだ刃先を有す
る薄板状の可動刃とこの可動刃に刃先が圧接される固定
刃からなるシート切断装置において、薄板状のフレーム
に切欠孔または切欠溝を設けることによって、切断中央
部(切り終わり部)での圧接力の著しい上昇を抑え、切
り始めから切り終わりまで適切な圧接力を維持し、可動
刃の動作力を低くできる共に、より安定した切断を維持
できる切断装置を提供することが可能となった。また、
これと付随して切断装置の摺動面に働く面圧力が軽減さ
れて摺動部分の摩耗を防ぐことができるので、経時的に
も安定した切断が可能となる効果も現れた。
The present invention is a sheet cutting device comprising a thin plate-shaped movable blade having an inverted V-shaped recessed blade edge and a fixed blade whose blade edge is pressed against the movable blade. By providing a notch groove, it is possible to suppress a significant increase in the pressure contact force at the cutting center part (cut end part), maintain an appropriate pressure contact force from the start of cutting to the end of cutting, and lower the operating force of the movable blade. It has become possible to provide a cutting device capable of maintaining stable cutting. Also,
Along with this, the surface pressure exerted on the sliding surface of the cutting device can be reduced to prevent abrasion of the sliding portion, and the effect of enabling stable cutting over time has also appeared.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のシート切断装置の一実施例の断面図を
示すもので、(a)は組立概念図、(b)は断面図であ
る。
1A and 1B are cross-sectional views of an embodiment of a sheet cutting apparatus of the present invention, in which FIG. 1A is a conceptual view of assembly and FIG. 1B is a cross-sectional view.

【図2】本発明のシート切断装置の他の実施例を示すフ
レームの斜視図である。
FIG. 2 is a perspective view of a frame showing another embodiment of the sheet cutting apparatus of the present invention.

【図3】本発明のシート切断装置のさらに他の実施例を
示すフレームの斜視図である。
FIG. 3 is a perspective view of a frame showing still another embodiment of the sheet cutting apparatus of the present invention.

【図4】従来のギロチン式のシート切断装置の一例を示
す図で、(a)は組立概念図、(b)は断面図である。
4A and 4B are views showing an example of a conventional guillotine-type sheet cutting device, in which FIG. 4A is a conceptual diagram of assembly and FIG. 4B is a sectional view.

【符号の説明】[Explanation of symbols]

1 可動刃、11 可動刃刃先、12 可動刃刃材、1
3 可動刃台金、14ビス、15 スライダ、16 板
ナット、2 固定刃、21 フレーム、22固定刃刃
材、23 固定刃刃先、24 通紙窓、25 切り欠き
孔、26 スライド孔
1 movable blade, 11 movable blade edge, 12 movable blade material, 1
3 movable blade base metal, 14 screws, 15 slider, 16 plate nut, 2 fixed blade, 21 frame, 22 fixed blade blade material, 23 fixed blade edge, 24 paper passage window, 25 cutout hole, 26 slide hole

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 フレームに固着された固定刃と、逆V字
状に窪んだ刃先を有し、該刃先を前記固定刃の刃先に圧
接して摺動する可動刃と、前記固定刃が固着され、前記
可動刃が摺動可能に装着される薄板状のフレームからな
るシート切断装置において、該薄板状のフレームは、切
欠孔または切欠溝を有し、切断の後半部分で撓みを生じ
て、前記固定刃と前記可動刃との相互の圧接力の増加を
抑制することを特徴とするシート切断装置。
1. A fixed blade fixed to a frame and a cutting edge that is recessed in an inverted V shape, and the fixed blade is fixed to a movable blade that is pressed against the cutting edge of the fixed blade to slide. In the sheet cutting device including a thin plate-shaped frame on which the movable blade is slidably mounted, the thin plate-shaped frame has a cutout hole or a cutout groove, and a bending occurs in the latter half of cutting, A sheet cutting apparatus, which suppresses an increase in mutual pressure contact force between the fixed blade and the movable blade.
【請求項2】 シートが通る通過窓と可動刃を可動させ
るスライド孔を有する薄板状のフレームと、該フレーム
の前記通過窓の近傍に固着された固定刃と、逆V字状に
窪んだ刃先を有し前記フレームに設けられたスライド孔
に摺動可能に嵌入されたスライダに可動刃台金と共に固
定されて、その刃先を前記固定刃の刃先に圧接しながら
摺動する可動刃とからなり、前記薄板状のフレームに
は、さらに切欠孔または切欠溝を設けて切断の後半部分
で前記フレームが撓みを生じて、前記固定刃と前記可動
刃との相互の圧接力の増加を抑制することを特徴とする
シート切断装置。
2. A thin plate-shaped frame having a passage window through which a sheet passes and a slide hole for moving a movable blade, a fixed blade fixed near the passage window of the frame, and a cutting edge which is recessed in an inverted V shape. A movable blade that is fixed together with a movable blade base metal to a slider that is slidably fitted in a slide hole provided in the frame, and that slides while pressing its blade edge against the blade edge of the fixed blade. The thin plate-shaped frame is further provided with a cutout hole or a cutout groove to prevent the frame from bending in the latter half of cutting, thereby suppressing an increase in mutual pressure contact force between the fixed blade and the movable blade. A sheet cutting device.
JP17954093A 1993-07-21 1993-07-21 Sheet cutting device Pending JPH0732292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17954093A JPH0732292A (en) 1993-07-21 1993-07-21 Sheet cutting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17954093A JPH0732292A (en) 1993-07-21 1993-07-21 Sheet cutting device

Publications (1)

Publication Number Publication Date
JPH0732292A true JPH0732292A (en) 1995-02-03

Family

ID=16067543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17954093A Pending JPH0732292A (en) 1993-07-21 1993-07-21 Sheet cutting device

Country Status (1)

Country Link
JP (1) JPH0732292A (en)

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