JPH05104484A - Sheet material cutting device - Google Patents

Abstract

PURPOSE:To make a sheet material cutting device compact, and leave the central part of the sheet as it is not cut in a sheet material cutting device for facsimile or the like by forming a pair of movable blades, of which total length of a cutting part is equal to the length of a fixed blade or less, so that each one end thereof is connected to both ends of the fixed blade freely to turn and that the other ends thereof are connected to a link through oblong holes and pins. CONSTITUTION:A bilateral pair of movable blades 1, 2 respectively having blade tips 1a, 2a, each of which is provided with an angle of shearing from both sides of right and left toward the center, are turnably fitted to both ends of a fixed blade 3 around of a support shaft 5 under the condition that they are energized to the open direction by springs 4. Oblong holes 1b, 2b are formed in the other end of each movable blade 1, 2, and the movable blades 1, 2 are connected to a link 6 by pins 8 to cut the sheet material with the drive of the link 6 to the driving direction 7. Furthermore, a total length of the movable blades 1, 2 is formed longer than a distance between a pitch of the right and the left support shafts 5 by an idling quantity of the movable blades 1, 2 in the support shaft 5 parts. Consequently, at the time of concluding the cutting, the movable blades 1, 2 escape to rotate smoothly.

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、ファクシミリやプリン
タなどの装置において、ロール紙や折り畳み連続紙を任
意の長さに切断あるいは、切断の中央部に部分的に切り
残しを設けて切断するためのシート材切断装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for cutting a roll paper or a folding continuous paper into an arbitrary length in an apparatus such as a facsimile machine or a printer, or for cutting by partially leaving an uncut portion at the center of the cutting. The present invention relates to a sheet material cutting device.

【０００２】[0002]

【従来の技術】シート材料切断装置として、従来から通
常ロータリ式と称する切断装置が多用されているが、ロ
ータリ式切断装置では、構造上剪断角を大きくして小さ
い駆動力で大きい剪断力を得ること、および部分的な切
り残しをする切断ができないので、このような要求に応
じるため、鋸刃状刃物を用いる切断装置、通称ギロチン
式と呼ばれる切断装置、および鋏式の切断装置が知られ
ている。上述した鋸刃状の刃物を用いるものには、実開
昭６２−１７２５９５号公報に記載されたような鋸刃状
の薄刃刃物とこの刃物が陥入する溝とを対向して配置
し、この間にある用紙に前記鋸刃の刃先を貫通させて切
断するものが広く用いられている。またギロチン式の切
断装置としては、本願と同一出願人により、特開平０１
−２８９６９７号公報には、刃先線がＶ字形に窪んだ切
刃を有する薄板状の可動刃と相手側固定刃の刃先が交差
圧接しながら両端より中央に向かって切断する装置が広
く開示されており、さらに、実開平２−１１０４９６号
には中央部が窪んだ逆Ｖ字型の刃先を有する可動刃と、
真直な刃先の固定刃からなり、刃物の左右両側から中央
に向けて剪断角が形成される切断装置が開示されてい
る。2. Description of the Related Art Conventionally, as a sheet material cutting device, a cutting device usually called a rotary type has been widely used. However, in the rotary type cutting device, a large shear angle is structurally obtained to obtain a large shear force with a small driving force. In order to meet such demands, a cutting device using a saw blade, a cutting device commonly referred to as a guillotine type, and a scissors type cutting device are known to meet such requirements. There is. In the case of using the above-mentioned saw blade-shaped blade, a saw blade-shaped thin blade blade as described in Japanese Utility Model Laid-Open No. 62-172595 and a groove into which this blade is recessed are arranged so as to face each other. There is widely used a sheet of paper which is cut by penetrating the blade edge of the saw blade. A guillotine-type cutting device is disclosed in Japanese Patent Application Laid-Open No.
In Japanese Patent Publication No. 289697, there is widely disclosed a device in which a thin plate-shaped movable blade having a V-shaped concave cutting edge and a cutting edge of a mating fixed blade cross-contact and cut from both ends toward the center. In addition, a movable blade having an inverted V-shaped cutting edge with a depressed central portion is provided in No. 2-110496.
Disclosed is a cutting device which includes a fixed blade having a straight blade edge and which forms a shear angle from the left and right sides of the blade toward the center.

【０００３】実開昭６２−１０６７９２号公報に記載さ
れた装置のように、一対の刃物の刃先を交差圧接しなが
ら一端より他端へと順次鋏式に切断するものも広く用い
られており、さらに、実開平２−３９８９５号公報に記
載された装置のように、上・下の裁断刃をコイルバネで
圧接し、交差摩擦移動し鋏式に切断する構造のものも広
く用いられている。上記のギロチン式切断装置には、後
述するように、上下に摺動する可動刃に加わる負荷のア
ンバランスが生じた時に、可動刃が左右に傾いて安定し
た切断ができないので、本願出願人は可動刃が左右に傾
かない構造の切断装置を開発し特願平３−８６２７２号
で出願した。A device such as the device described in Japanese Utility Model Laid-Open No. 62-106792 is widely used, in which a pair of blades is sequentially scissor-cut from one end to the other end while cross-welding. Further, as in the device described in Japanese Utility Model Laid-Open No. 2-39895, a structure in which upper and lower cutting blades are pressed against each other by a coil spring and cross frictionally moved to perform scissor cutting is also widely used. In the above-mentioned guillotine-type cutting device, as will be described later, when an imbalance of a load applied to a movable blade that slides up and down occurs, the movable blade tilts to the left and right, and stable cutting cannot be performed. We developed a cutting device with a movable blade that does not tilt to the left and right and filed an application for Japanese Patent Application No. 3-86272.

【０００４】[0004]

【発明が解決しようとする課題】従来広く用いられてい
る上述した切断装置のうち実開昭６２−１７２５９５号
の鋸刃状刃物を用いるものでは、刃物の先端の鋭い刃先
によって用紙に穴を開け、次いでこの穴を切り拡げ谷部
の刃先で切り離すという切断を行なうので、鋸刃状刃物
の刃先の陥入深さを加減することにより、用紙を切り離
したり、あるいは部分的にミシン目様の切り残しをつけ
たりすることができる。しかしこの種の切断装置では、
切味は刃先先端の鋭さに大きく左右されるので、繰り返
し使用による刃先の摩耗を受け易く、早期摩耗寿命とな
ることが多い。また、実開平０１−２８９６９７号に記
載の切断装置では、一対の刃先で用紙を剪断するので、
鋏と同じ原理で信頼性の高い構造で、しかも必要に応じ
て用紙に部分的に切り残しを付けることも可能である。
しかし、この切断装置の欠点を特願平０３−８６２７２
号で説明しているようにこの種の切断装置は、可動刃の
昇降を可動刃の中央部に設けたスライダを相手フレーム
の長孔に挿入し、上下に摺動させる構造としているの
で、Ｖ字形に窪んだ左右の切刃に加わる負荷のアンバラ
ンスが生じた時に可動刃が左右に傾き、安定した可動刃
の昇降および切断を損う欠点があった。この傾向は切断
装置の高さに対する切断巾が広いもの程顕著に現われ
る。一方実開平２−１１０４９６号に開示された切断装
置は可動刃が上下のみならず左右にも動く構造であるの
で、切断されるシート材は可動刃の幅よりも小さくな
り、切断装置全体も大型になる傾向にある。Among the above-mentioned widely used cutting devices, the one using a saw blade-shaped blade of Japanese Utility Model Laid-Open No. 62-172595 punches a hole in a sheet by a sharp blade tip of the blade. Then, cutting is performed by cutting this hole and cutting it with the blade edge of the trough, so by adjusting the depth of indentation of the blade edge of the saw blade, you can cut the paper or partially cut perforations. You can leave a mark. But with this kind of cutting device,
The sharpness largely depends on the sharpness of the tip of the cutting edge, so that the cutting edge is likely to be worn by repeated use and often has an early wear life. Further, in the cutting device described in Japanese Utility Model Laid-Open No. 01-289697, since the paper is sheared by the pair of blade edges,
With the same principle as scissors, it has a highly reliable structure, and it is also possible to partially cut out the paper if necessary.
However, the shortcomings of this cutting device are described in Japanese Patent Application No. 03-86272.
As described in No. 5, the cutting device of this type has a structure in which a slider provided at the central portion of the movable blade is inserted into a long hole of a mating frame to move the movable blade up and down, and is slid up and down. When the load applied to the left and right cutting blades recessed in the shape of a letter is unbalanced, the movable blade tilts to the left and right, which impairs stable lifting and cutting of the movable blade. This tendency is more remarkable as the cutting width is wider with respect to the height of the cutting device. On the other hand, in the cutting device disclosed in Japanese Utility Model Laid-Open No. 2-110496, since the movable blade moves not only vertically but also left and right, the sheet material to be cut is smaller than the width of the movable blade, and the entire cutting device is large. Tends to become.

【０００５】また、実開昭６２−１０６７９２号に記載
の切断装置では、鋏式に一対の刃物を交差圧接し、一対
の刃先で用紙を剪断するので、あまり鋭い刃先でなくて
も切断を行なうことができ、長期にわたって安定した切
断を維持することが可能である。しかしながらこのよう
な鋏の構造の刃物は、相互の刃先を順次交差圧接すると
いう構造であるから、ミシン目状の切り残しを形成する
ことは困難である。したがって仮に一方の刃先に切り残
しを形成するための切欠き溝を設けても、切断を完了し
た切り始め側の用紙に刃物が陥入して用紙を切断方向に
押すことによって既に形成した切り残し部分を刃物自身
が引きちぎってしまうという問題点がある。さらに実開
平０２−３９８９５号に記載の切断装置では、全くの鋏
の構造である。したがって実開昭６２−１０６７９２号
と同じ様な問題点がある。また、鋏構造の切断装置では
剪断角が切断位置によって常に変動し、切断開始部が最
大値を示し、徐々に減少し切断終了時に最小値となるた
め、切断開始部の剪断角を充分に大きくとる必要がある
ことと、用紙挿入の為の上刃と下刃との間隙を考慮する
と、ロータリカッタと比較した場合切断終了までのスト
ローク量を大きくしなければならないので装置全体が大
型になる欠点がある。本願発明は上述した従来の切断装
置の問題点を解消し、小さい駆動力で大きな剪断力が得
られる鋏式の切断装置において、刃物装置全体を小型化
し、しかも中央部で切残しも可能なシート材切断装置を
提供することを目的とする。Further, in the cutting device described in Japanese Utility Model Laid-Open No. 62-106792, a pair of blades are cross-pressure-contacted with each other by scissors and the paper is sheared by the pair of blade edges, so that cutting is performed even if the blade edges are not very sharp. It is possible to maintain stable cutting for a long period of time. However, since the blade having such a scissor structure has a structure in which the blade edges of the scissors are sequentially cross-welded to each other, it is difficult to form a perforation-like uncut portion. Therefore, even if a notch groove for forming an uncut portion is provided on one of the cutting edges, the uncut portion that has already been formed by pushing the sheet in the cutting direction with the blade invading the sheet on the cutting start side that has completed cutting There is a problem that the blade itself tears off the part. Furthermore, in the cutting device described in Japanese Utility Model Laid-Open No. 02-39895, the structure is entirely scissors. Therefore, there are the same problems as in Japanese Utility Model Laid-Open No. 62-106792. Also, in a scissor-type cutting device, the shear angle always fluctuates depending on the cutting position, the cutting start part shows the maximum value, gradually decreases and becomes the minimum value at the end of cutting, so the shear angle at the cutting start part is made sufficiently large. Considering that it is necessary to take it and the gap between the upper blade and the lower blade for inserting paper, the stroke amount until the end of cutting must be increased when compared with the rotary cutter, so the entire device is large There is. The present invention solves the above-mentioned problems of the conventional cutting device, and in a scissors-type cutting device capable of obtaining a large shearing force with a small driving force, the blade device is downsized as a whole, and a sheet that can be left uncut in the central portion An object is to provide a material cutting device.

【０００６】[0006]

【課題を解決するための手段】本願発明者は上述した従
来の切断装置の欠点を解消し新規なシート材切断装置を
提供するため、小さい駆動力で大きい剪断力が得られる
ギロチン式と鋏式について種々検討した結果によるもの
であり、鋏式の切断装置の一方の刃物を二分して可動刃
を二つにすることにより、鋏式切断装置は背が高くなり
やすいという最大の欠点を解消して、高さをほぼ半分に
することができることを見出して、本願発明を完成した
ものである。In order to solve the above-mentioned drawbacks of the conventional cutting device and to provide a new sheet material cutting device, the inventor of the present application provides a guillotine type and a scissor type device which can obtain a large shearing force with a small driving force. Based on the results of various studies on the scissors-type cutting device, the scissors-type cutting device eliminates the biggest drawback that the scissors-type cutting device tends to become taller by dividing one blade of the scissors-type cutting device into two movable blades. The inventors have completed the present invention by finding that the height can be reduced to almost half.

【０００７】より具体的に説明すると、本願の第１発明
は、左右両端部に支軸を有する可動刃が圧接された固定
刃と、支軸に回転自在に軸支され軸支側の一方の端部に
固定刃への交差手段を有し、他方の端部に長孔を有し相
対する左右一対の可動刃と、駆動軸および可動刃の長孔
に嵌入されて可動刃と連結するピンを有するリンクから
構成されている。そして一対の可動刃のそれぞれ一方の
端部が、コイルばねを嵌入された支軸に軸支され、固定
刃と可動刃が剪断角を形成する如くピンが長孔に嵌入さ
れている。一対の可動刃の長さは前記一対の可動刃の刃
先線がほぼ一直線となる位置で可動刃の先端が互に当接
するかまたは間隙を有する長さであるシート材切断装置
である。More specifically, in the first invention of the present application, a fixed blade to which movable blades having spindles at both left and right ends are in pressure contact, and one of a fixed shaft that is rotatably supported by a spindle and a shaft support side. A pair of left and right movable blades that have a means for intersecting with a fixed blade at one end and have a long hole at the other end and that face each other, and a pin that is fitted into the drive shaft and the long hole of the movable blade to connect with the movable blade. It is composed of a link having. One end of each of the pair of movable blades is pivotally supported by the support shaft into which the coil spring is inserted, and the pin is inserted into the elongated hole so that the fixed blade and the movable blade form a shear angle. In the sheet material cutting device, the length of the pair of movable blades is such that the tips of the movable blades are in contact with each other or have a gap at a position where the edge lines of the pair of movable blades are substantially aligned.

【０００８】さらに第２発明は、第１発明と同じ固定
刃、可動刃およびリンクが、用紙の通過窓とリンクの駆
動軸が往復運動できる長孔を有し薄板状の弾性部材でな
るフレームに装着されてなる切断装置である。そしてこ
のような構造とすることにより、固定刃と可動刃を圧接
する力を、コイルばね等を用いないでフレームと可動刃
の弾性力によるばね効果で発生させる切断装置である。
次に第３発明は、第１発明および第２発明において、リ
ンクに設けるピンを左右の可動刃の回転位相をずらす方
向に配置して、可動刃の刃先線が回転位相がずれたまま
固定刃と交差圧接するようにした切断装置である。A second aspect of the invention is a frame in which the same fixed blades, movable blades and links as in the first aspect of the present invention are thin plate-like elastic members having a long hole through which a paper passage window and a link drive shaft can reciprocate. It is a cutting device that is mounted. With such a structure, the cutting device can generate a force for pressing the fixed blade and the movable blade into pressure contact with each other by the spring effect of the elastic force of the frame and the movable blade without using a coil spring or the like.
Next, in a third aspect of the invention, in the first and second aspects of the invention, the pin provided on the link is arranged in a direction that shifts the rotational phase of the left and right movable blades, and the blade edge line of the movable blade is out of phase with the fixed blade. It is a cutting device that is designed to cross-weld with.

【０００９】[0009]

【作用】第１発明において、固定刃に設けられた支軸に
軸支された可動刃は軸支側の端部に設けられた交差手段
により固定刃との間に交差角が形成され、支軸に設けら
れたコイルばねにより固定刃に対して圧接される。上述
した交差手段としては、可動刃の端部を段付にして突起
を設けてもよいし、別部品のスペーサ等を嵌入させても
同じように交差手段が得られる。そして軸支側とは反対
側の端部に設けられた長孔にリンクのピンが嵌入され、
駆動力によりリンクが移動し固定刃と可動刃で形成され
る剪断角が徐々に小さくなると共に圧接位置が移動し
て、シート材が両端部から中央に向かって切断される。In the first aspect of the invention, the movable blade axially supported by the support shaft provided on the fixed blade has a crossing angle formed between the movable blade and the fixed blade by the crossing means provided at the end on the shaft support side. It is pressed against the fixed blade by a coil spring provided on the shaft. As the above-mentioned intersecting means, the end of the movable blade may be stepped to provide a projection, or the intersecting means can be similarly obtained by inserting a spacer or the like as a separate component. And the pin of the link is inserted into the long hole provided at the end opposite to the shaft support side,
The link moves due to the driving force, the shear angle formed by the fixed blade and the movable blade gradually decreases, and the pressing position moves, so that the sheet material is cut from both ends toward the center.

【００１０】第２発明は、第１発明の装置を薄板状の弾
性部材でなるフレーム上に装着したものである。可動刃
の構造は第１発明と同じであるが、支軸への軸支はコイ
ルばねを用いる必要はなく、抜け防止部材を用いて、支
軸から抜けないようにしておくだけである。リンクはフ
レームに設けた長孔に摺動可能に装着する。可動刃の長
孔に、リンクに設けられたピンが嵌入されるのは第１発
明と同じで、ピンには可動刃の抜けを防止できるように
しておく。さらに可動刃が装着される側の固定刃の面
は、リンクのピンが装着される側の面よりも突出させて
おく。このような構造とすることにより、固定刃と可動
刃の圧接はフレームと可動刃のたわみにより得られるの
で確実な切断が可能となる。また相対する一対の可動刃
の長さは、各々の刃先線同志がほぼ一直線となる位置
で、その先端が当接するような長さにしておくと、シー
ト材は全幅が切離される。固定刃はその先端が互にわず
かに干渉する程度の長さであれば、可動刃に製造上必然
的に発生する誤差によってこの干渉は吸収できる。刃の
先端を当接させないで隙間を設けると、この隙間分だけ
シート材に切残しが形成できる。シート材を全幅にわた
って確実に切離し度い時には、左右の可動刃の回転が少
しずれるように配置し可動刃の刃先線の回転位相がずれ
たまま固定刃と交差圧接させる。この構造はリンクのピ
ンの位置を調整することによって得られる。According to a second aspect of the present invention, the device of the first aspect is mounted on a frame made of a thin plate-like elastic member. Although the structure of the movable blade is the same as that of the first invention, it is not necessary to use a coil spring for pivotally supporting the support shaft, and only a removal preventing member is used to prevent the support shaft from coming off. The link is slidably mounted in the long hole provided in the frame. The pin provided on the link is fitted into the elongated hole of the movable blade, which is the same as in the first aspect of the invention, and the pin is designed to prevent the movable blade from coming off. Further, the surface of the fixed blade on the side where the movable blade is mounted is made to project more than the surface of the side where the pin of the link is mounted. With such a structure, pressure contact between the fixed blade and the movable blade can be obtained by bending the frame and the movable blade, so that reliable cutting can be performed. The lengths of the pair of movable blades facing each other are such that the respective blade edge lines are substantially in line with each other, and if the tips are in contact with each other, the entire width of the sheet material is separated. If the fixed blade has such a length that its tips slightly interfere with each other, this interference can be absorbed by an error that is inevitably generated in the movable blade during manufacturing. If a gap is provided without abutting the tips of the blades, an uncut portion can be formed in the sheet material by this gap. When the sheet material is reliably separated over the entire width, the left and right movable blades are arranged so that their rotations are slightly deviated from each other, and the movable blades are brought into cross pressure contact with the fixed blade while the rotational phase of the cutting edge line is deviated. This structure is obtained by adjusting the position of the pins of the link.

【００１１】[0011]

【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、本発明のシート材切断装置の一実施
例を示すもので（ａ）は斜視図、（ｂ）は上面図、
（ｃ）は正面図である。左右に設けたそれぞれの可動刃
１，２は、左右両側から中央に向けて剪断角を形成する
刃先１ａ，２ａを有し、さらに刃部の先端部に長孔１
ｂ，２ｂを設け、固定刃３の左右両端に設けた支軸５に
回動自在に取り付けた。また、それぞれの可動刃の端部
には固定刃刃先との圧接方向に交差するように可動刃を
傾ける目的で段付部１ｃ，２ｃを設けた。この段付部
は、スペーサを挿入して代替することでも同じ効果が得
られるので可動刃の形状を簡素化することが可能であ
る。固定刃３は、左右両側にある支軸５に設けたばね４
によってその固定刃刃先３ａを前記可動刃１，２に対し
て圧接させた。切断装置の中央部に可動刃１，２を連結
するピン８および駆動ピン７を有するリンク６を設け、
ピン８は、可動刃１，２の長孔１ｂ，２ｂに挿入した。
リンク６を上下方向に移動すると、可動刃１，２が回転
し両端より中央に向かってシート材が切断されて中央部
で切断を終了する。本実施例では、左右の可動刃１と２
を合わせた長さは、左右両端に設けた支軸５のピッチ間
距離より支軸５に嵌合する可動刃にある穴との遊び量に
相当する範囲内で長くしておいて、切断終了時に双方の
可動刃が逃げてスムースに回転して切断を終了するよう
にしてある。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 material cutting device of the present invention, where FIG. 1A is a perspective view, FIG.
(C) is a front view. Each of the movable blades 1 and 2 provided on the left and right has blade edges 1a and 2a that form a shear angle from both the left and right sides toward the center, and further has a long hole 1 at the tip of the blade portion.
b and 2b are provided and rotatably attached to the support shafts 5 provided at the left and right ends of the fixed blade 3. Further, stepped portions 1c and 2c are provided at the end of each movable blade for the purpose of inclining the movable blade so as to intersect with the fixed blade edge in the pressure contact direction. The stepped portion can achieve the same effect by inserting a spacer and replacing it, so that the shape of the movable blade can be simplified. The fixed blade 3 is a spring 4 provided on the support shafts 5 on the left and right sides.
The fixed blade edge 3a was pressed against the movable blades 1 and 2. A link 6 having a pin 8 connecting the movable blades 1 and 2 and a drive pin 7 is provided at the center of the cutting device,
The pin 8 was inserted into the long holes 1b and 2b of the movable blades 1 and 2.
When the link 6 is moved in the vertical direction, the movable blades 1 and 2 rotate and the sheet material is cut toward the center from both ends, and the cutting is finished at the central portion. In this embodiment, the left and right movable blades 1 and 2
The combined length is longer than the distance between the pitches of the support shafts 5 provided at the left and right ends within a range corresponding to the amount of play with the hole in the movable blade fitted to the support shaft 5, and the cutting ends. At the same time, both movable blades escape and rotate smoothly to finish the cutting.

【００１２】図２は、本発明の第２発明の実施例を示す
もので（ａ）は斜視図、（ｂ）は中央部の断面図、
（ｃ）は組立概念図である。左右に設けたそれぞれの可
動刃１，２は、左右両側から中央に向かって剪断角を形
成する刃先１ａ，２ａを有し、さらに刃部の先端部に長
孔１ｂ，２ｂを有し、固定刃３の左右両端に設けた支軸
５に回動自在に取付け、さらに圧接方向に前記可動刃が
移動可能な位置に抜け防止部材であるＥリング２０を設
けてある。また、それぞれの可動刃の端部に固定刃刃先
との圧接方向に交差するように可動刃を傾ける目的で段
付部１ｃ，２ｃを設けた。フレーム９は、薄板状の弾性
部材を使用し、切断中央部に可動刃１，２を連結するピ
ン８を有するリンク６が上下方向（剪断方向）に摺動自
在なように長孔９ａと、用紙の通過窓９ｂを設けた。そ
して、このフレーム９の通過窓９ｂの直下に固定刃を取
付けた。ピン８は可動刃の先端部の長孔１ｂ，２ｂにそ
れぞれ挿入し、可動刃１，２の圧接方向の遊びを抑制す
る位置にＥリング溝８ａを設けた。リンク６は、フレー
ム９の板厚より厚いスペーサ２３をフレーム９のフレー
ム長孔９ａに挿入し、フランジ部２４ａが前記フレーム
の長孔９ａより大きい外径を有する駆動ピン２４を重ね
合わせてビス２５で固定して摺動可能に装着した。この
ような構造とするとフレーム９が板厚方向にたわみを発
生し、刃物同志の圧接力を得る構造としたものである。
前記圧接力は、スペーサ２３の厚さを変えることによっ
ても適宜対応が可能である。駆動ピン２４を上下に移動
すると、可動刃１，２が回転し両端より中央に向かって
シート材が切断されて中央部で切断を終了するものであ
る。FIG. 2 shows an embodiment of the second invention of the present invention. (A) is a perspective view, (b) is a sectional view of the central portion,
(C) is an assembly conceptual diagram. Each of the movable blades 1 and 2 provided on the left and right has blade edges 1a and 2a that form a shear angle from both the left and right sides toward the center, and further has elongated holes 1b and 2b at the tip of the blade portion and fixed. The blades 3 are rotatably attached to the support shafts 5 provided at the left and right ends of the blade 3, and E-rings 20 serving as slip-off preventing members are provided at positions where the movable blade can move in the pressing direction. Further, stepped portions 1c and 2c are provided at the end of each movable blade for the purpose of inclining the movable blade so as to intersect with the fixed blade edge in the pressure contact direction. The frame 9 uses a thin plate-shaped elastic member, and has a long hole 9a so that a link 6 having a pin 8 for connecting the movable blades 1 and 2 at a cutting center can be slid vertically (shearing direction). A paper passage window 9b is provided. Then, a fixed blade was attached to the frame 9 immediately below the passage window 9b. The pin 8 was inserted into the long holes 1b and 2b at the tip of the movable blade, and the E-ring groove 8a was provided at a position where the play of the movable blades 1 and 2 in the pressing direction was suppressed. In the link 6, a spacer 23, which is thicker than the plate thickness of the frame 9, is inserted into the frame elongated hole 9a of the frame 9, and the flange 24a is overlapped with the drive pin 24 having an outer diameter larger than the elongated hole 9a of the frame to screw 25. It was fixed so that it could be slid. With such a structure, the frame 9 is bent in the plate thickness direction to obtain the pressing force of the blades.
The pressure contact force can be appropriately dealt with by changing the thickness of the spacer 23. When the drive pin 24 is moved up and down, the movable blades 1 and 2 are rotated and the sheet material is cut toward the center from both ends, and the cutting is finished at the central portion.

【００１３】図３は、本発明の他の実施例を示すもので
可動刃１，２の刃先先端部１ｄ，２ｄが当接しないよ
う、左右の可動刃の支軸５のピッチ間距離より刃部を短
かくすることで、中央部のみ残して切断を行なうことが
可能な切断装置である。図４は、本発明の可動刃１，２
の別の実施例を示すものである。可動刃２の先端部２ｅ
の背面に段差を設け、一方の可動刃１の先端部１ｅは可
動刃２の背面にオーバーラップするだけ長くし、リンク
６に設けたピン８は、左右の可動刃の回転位相をずらし
て設けた。左右の可動刃１，２の先端に設けた長孔１
ｂ，２ｂを挿入することで、リンク６が上下に移動する
と、可動刃１，２が回動するが、中央部では可動刃２が
先に切断に関与し、次に可動刃１が切断に関与すること
で、刃先の不連続部での確実な切断が可能となる切断装
置である。FIG. 3 shows another embodiment of the present invention. In order to prevent the tip end portions 1d and 2d of the movable blades 1 and 2 from coming into contact with each other, the blades are set from the distance between the pitches of the support shafts 5 of the left and right movable blades. The cutting device is capable of cutting only the central part by shortening the part. FIG. 4 shows the movable blades 1 and 2 of the present invention.
2 shows another embodiment of the present invention. Tip 2e of movable blade 2
Is provided with a step, the tip 1e of one movable blade 1 is made as long as it overlaps with the back of the movable blade 2, and the pin 8 provided on the link 6 is provided by shifting the rotational phase of the left and right movable blades. It was Long holes 1 provided at the tips of the left and right movable blades 1 and 2
When the link 6 moves up and down by inserting b and 2b, the movable blades 1 and 2 rotate, but in the central portion, the movable blade 2 participates in the cutting first, and then the movable blade 1 cuts. By being involved, the cutting device enables reliable cutting at the discontinuous portion of the cutting edge.

【００１４】[0014]

【発明の効果】本発明のシート材切断装置は、信頼性の
高い鋏構造であるので、Ｖ字形に窪んだ切刃を有する可
動刃を上下に摺動させる構造の切断装置によくみられる
ような切刃の左右に加わる力がアンバランスを生じた時
に可動刃が左右に傾き、安定な切断を損う欠点を解消す
ることが可能であるうえに、鋏構造の切断装置に特有の
欠点である切断装置の高さを従来の切断装置の約１／２
にまで小型化が可能となり、薄型で狭幅の切断装置を提
供できる。Since the sheet material cutting device of the present invention has a highly reliable scissor structure, it is often seen in a cutting device having a structure in which a movable blade having a V-shaped concave cutting blade is slid up and down. It is possible to eliminate the drawback that the movable blade tilts to the left and right when the force applied to the left and right of the cutting edge causes imbalance, and it is possible to eliminate the drawback of degrading stable cutting. The height of a cutting device is about half that of conventional cutting devices
The downsizing can be achieved, and a thin and narrow cutting device can be provided.

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

【図１】図１は本発明の一実施例を示すもので（ａ）は
斜視図、（ｂ）は上面図、（ｃ）は正面図である。FIG. 1 shows an embodiment of the present invention, (a) is a perspective view, (b) is a top view, and (c) is a front view.

【図２】図２は本発明の第２発明の実施例を示すもので
（ａ）は斜視図、（ｂ）は中央部の断面図、（ｃ）は組
立概念図である。2A and 2B show an embodiment of a second invention of the present invention, FIG. 2A is a perspective view, FIG. 2B is a sectional view of a central portion, and FIG.

【図３】図３は本発明の他の実施例を示し、シート材の
中央に切残しを設けることが可能な可動刃の先端部の状
況を示す図である。FIG. 3 shows another embodiment of the present invention, and is a view showing a situation of a tip end portion of a movable blade capable of providing a cut residue in the center of a sheet material.

【図４】図４は本発明のさらに他の実施例を示すもので
シート材を確実に切離すための、可動刃の先端の構造を
示す図である。FIG. 4 shows still another embodiment of the present invention and is a view showing a structure of a tip of a movable blade for surely separating a sheet material.

【符号の説明】[Explanation of symbols]

１ 可動刃 １ａ 刃先線 １ｂ 長孔 １ｃ 段付部 １ｄ 刃先先端部 １ｅ 刃先先端部 ２ 可動刃 ２ａ 刃先線 ２ｂ 長孔 ２ｃ 段付部 ２ｄ 刃先先端部 ２ｅ 刃先先端部 ３ 固定刃 ３ａ 固定刃刃先線 ４ ばね ５ 支軸 ６ リンク ７ 駆動ピン ８ ピン ８ａ Ｅリング溝 ９ フレーム ９ａ 用紙の通過窓 ９ｂ フレームの長孔 ２０ Ｅリング ２１ Ｅリング ２３ スペーサ ２４ 駆動ピン ２４ａ フランジ ２５ ビス 1 Movable Blade 1a Blade Edge Line 1b Long Hole 1c Stepped Part 1d Blade Tip Tip 1e Blade Tip Tip 2 Movable Blade 2a Blade Edge 2b Slot 2c Stepped Section 2d Blade Tip 2e Blade Tip 3 Fixed Blade 3a Fixed Blade Edge Line 4 Spring 5 Spindle 6 Link 7 Drive Pin 8 Pin 8a E Ring Groove 9 Frame 9a Paper Passing Window 9b Frame Long Hole 20 E Ring 21 E Ring 23 Spacer 24 Drive Pin 24a Flange 25 Screw

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 左右両端部に支軸を有する可動刃が圧接
された固定刃と、前記支軸に回転自在に軸支され、軸支
側の一方の端部に前記固定刃への交差手段を有し、他方
の端部に長孔を有し相対する左右対の可動刃と、駆動軸
および前記可動刃の長孔に嵌入され前記可動刃と連結す
るピンを有するリンクからなり、前記一対の可動刃のそ
れぞれ一方端がコイルばねを嵌入された前記支軸に軸支
され、前記固定刃と前記可動刃が剪断角を形成する如く
前記ピンが前記長孔に嵌入され、前記一対の可動刃の長
さは、前記一対の可動刃の刃先線がほぼ一直線となる位
置でその先端が互に当接するか、または間隙を有する長
さであることを特徴とするシート材切断装置。1. A fixed blade, to which movable blades having support shafts at both left and right ends are in pressure contact, and rotatably supported by the support shaft, and a means for intersecting the fixed blade at one end on the shaft support side. And a pair of left and right movable blades having a long hole at the other end and facing each other, and a link having a drive shaft and a pin fitted into the long hole of the movable blade and connected to the movable blade, One end of each of the movable blades is pivotally supported by the support shaft into which a coil spring is fitted, and the pin is fitted into the elongated hole so that the fixed blade and the movable blade form a shear angle, and the pair of movable blades are movable. The sheet material cutting device is characterized in that the length of the blade is such that the tips of the pair of movable blades abut each other or have a gap at a position where the cutting edge lines of the pair of movable blades are substantially aligned. 【請求項２】 用紙の通過窓とリンクの駆動軸が往復運
動できる長孔を有し薄板状の弾性部材でなるフレーム
と、左右両端部に支軸を有する可動刃が圧接された固定
刃と、前記支軸に回転自在に軸支され軸支側の一方の端
部に前記固定刃への交差手段を有し、他方の端部に長孔
を有し相対する左右一対の可動刃と、駆動軸および前記
可動刃の長孔に嵌入され前記可動刃と連結するピンを有
するリンクからなり、前記可動刃の一方の端部が抜け防
止部材を用いて前記支軸に軸支され、前記固定刃と前記
可動刃が剪断角を形成する如く前記ピンが抜け防止部材
を装着して前記長孔に嵌入され、前記リンクに設けられ
た駆動軸が、前記フレームに設けられた長孔に摺動可能
に嵌入され、前記一対の可動刃はその刃先線が真直とな
る位置でその先端が互に当接するか、または間隙を有す
る長さであることを特徴とするシート材切断装置。2. A frame made of a thin plate-like elastic member having a long hole through which a paper passage window and a link drive shaft can reciprocate, and a fixed blade to which movable blades having support shafts at both left and right ends are pressed. A pair of left and right movable blades that are rotatably supported by the support shaft and that have a crossing means for the fixed blade at one end on the shaft support side and that have a long hole at the other end and that face each other, The movable shaft comprises a link having a pin that is fitted into a long hole of the movable blade and connected to the movable blade, and one end of the movable blade is rotatably supported by the support shaft by using a slip-off prevention member, and the fixed portion. The pin is fitted into the elongated hole by attaching a slip-off preventing member so that the blade and the movable blade form a shear angle, and the drive shaft provided on the link slides on the elongated hole provided on the frame. The pair of movable blades are fitted so that the tips of the movable blades are aligned with each other at a position where the blade edges are straight. A sheet material cutting device having a length that abuts against or has a gap. 【請求項３】 相対する左右の可動刃が、一方の刃先長
さよりも他方の刃先長さを長尺とされ、リンクに設けら
れたピンの位置を左右の可動刃の刃先線の回転位相をず
らす方向に配置し、可動刃の刃先線が回転位相がずれた
まま固定刃と交差圧接することを特徴とする請求項１ま
たは２に記載のシート材切断装置。3. The opposing left and right movable blades have a longer blade edge length than the other blade edge length, and the position of a pin provided on the link is set to the rotational phase of the blade edge lines of the left and right movable blades. 3. The sheet material cutting device according to claim 1, wherein the sheet material cutting device is arranged in a shifting direction, and the blade edge line of the movable blade is brought into cross-pressure contact with the fixed blade while the rotational phase is shifted.