JPH01205997A - Sheet cutting device - Google Patents

Abstract

PURPOSE:To make it possible to facilitate the removal of a jamming recording sheet from the gap between the edges of first and second sheet cutter blades by supporting the first cutter blade rotatably in the direction in which the gap between the edges of the first and second cutting blades may be enlarged. CONSTITUTION:When a recording sheet 12 jams between a stationary blade body 2 and a movable blade body 3b, a releasing shaft 11 is moved in a desired direction so as to release itself from the engagement with a right bearing plate 4a so that a stationary plate attaching member 1a may be swung about a support shaft 3d. Then a picking member 14 is gripped so as to rotate the stationary plate attaching member 1a in the direction of the arrow C in order to enlarge the gap between the stationary blade body 2 and the movable blade body 3b. With this arrangement, the jamming recording sheet 12 can be easily removed through the gap. After removal of the recording sheet 12, the stationary blade body 1a is returned to its original position, and the releasing shaft 11 is inserted in an engaging shaft hole 4a-2 in the right bearing plate 4a, and accordingly, the condition in which a recording sheet can be cut by the blades 1, 3 is reestablished.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、シートを切断するためのシート切断装置に関
する。例えば、本発明はファクシミリ装置、複写機、あ
るいはプリンター等の画像形成装置において、記録済み
の記録紙を所定長さに切断するための記録紙切断装置等
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sheet cutting device for cutting sheets. For example, the present invention relates to a recording paper cutting device for cutting recorded recording paper into a predetermined length in an image forming apparatus such as a facsimile machine, a copying machine, or a printer.

［従来の技術］ 以下、ファクシミリ装置を例に挙げて説明する。[Conventional technology] A facsimile machine will be described below as an example.

一般に、ファクシミリ装置においては、ロール状に巻か
れた長尺の記録紙を収容し、記録済みの記録紙を記録紙
切断装置により切断するようにしている。Generally, a facsimile machine accommodates a long length of recording paper wound into a roll, and the recorded recording paper is cut by a recording paper cutting device.

従来のこの種の記録紙切断装置は、記録紙の幅方向に沿
フて延びる固定刃と可動刃とを記録紙通過面の上下に対
向配置し、記録済の記録紙が切断位置を通過すると、可
動刃を固定刃に向けて移動させることで、記録済の記録
紙をロール紙から切断するようになっている。This kind of conventional recording paper cutting device has a fixed blade and a movable blade that extend along the width direction of the recording paper and are arranged oppositely above and below the recording paper passing surface, and when the recorded recording paper passes the cutting position, By moving the movable blade toward the fixed blade, recorded recording paper is cut from the roll paper.

そしてこのような固定刃は、固定刃本体が固定刃取付体
に対し、可動刃との隙間が広げられる方向に移動可能に
取付けられている。そして、非切断状態においては、ば
ね部材により、固定本体を該可動刃と所定の間隙を保持
するように可動刃に向けて付勢している。そこで例えば
、記録紙が切断値Ｍの近傍で紙詰りを起こした場合、固
定刃本体をばね部材のばね力に抗して移動させることに
より、固定刃本体と可動刃との間隙を広げ、紙詰りした
記録紙の除去作業ができるようになっている。In such a fixed blade, the fixed blade main body is mounted so as to be movable with respect to the fixed blade mounting body in a direction that widens the gap between the fixed blade and the movable blade. In the non-cutting state, the fixed body is biased toward the movable blade by the spring member so as to maintain a predetermined gap between the fixed body and the movable blade. Therefore, for example, if the paper jams near the cutting value M, the fixed blade body is moved against the spring force of the spring member to widen the gap between the fixed blade body and the movable blade, and You can now remove jammed recording paper.

ところで、近年、装置の低コスト化の要求から、固定刃
は固定刃本体を固定刃取付体にビス等により直接固定す
る方式を採用し、部品点数の削減および組立工数を減ら
して固定刃のコストダウンを図っている。By the way, in recent years, due to the demand for lower costs of equipment, fixed blades have adopted a method in which the fixed blade body is directly fixed to the fixed blade mounting body with screws, etc., reducing the number of parts and assembly man-hours, and reducing the cost of fixed blades. I'm trying to bring it down.

そして、このような構造の固定刃を採用した記録紙切断
装置にあっては、切断位置近傍で記録紙の紙詰りか生じ
た場合、上述の従来例のように、固定刃本体の移動によ
り固定刃と可動刃との間隙を広げて紙詰りした記録紙の
除去作業が不可能なために、可動刃駆動用のモータを逆
転させて、可動刃と記録紙切断のための移動方向と逆の
方向に８勤させ、固定刃と可動刃との間隙を広げるよう
にした提案が行なわれている。In a recording paper cutting device that employs a fixed blade with such a structure, if a paper jam occurs near the cutting position, the fixed blade can be fixed by moving, as in the conventional example described above. Since it is impossible to remove jammed recording paper by widening the gap between the blade and the movable blade, the motor for driving the movable blade is reversed and the movable blade moves in the opposite direction to the direction of movement for cutting the recording paper. Proposals have been made to increase the gap between the fixed blade and the movable blade by increasing the gap between the fixed blade and the movable blade.

［発明を解決するための課題］ しかしながら、このような構成では、固定刃と可動刃の
間隙を広げるためには、わざわざモータを逆転させなけ
ればならず、制御が複雑になるとともに、操作も面倒で
あった。[Problems to be Solved by the Invention] However, with such a configuration, in order to widen the gap between the fixed blade and the movable blade, the motor must be reversed, which complicates control and makes operation troublesome. Met.

本発明の目的は、固定刃を可動刃に対して双方の間隙が
広がる方向に回動可能に組付けることにより、可動刃を
通常のシート切断方向と逆方向に移動させることなく、
固定刃と可動刃との間隙をシートのシート詰り除去等の
ために広げることができるシート切断装置を提供せんと
するものである。An object of the present invention is to assemble the fixed blade to the movable blade so that it can rotate in the direction in which the gap between the blades widens, thereby eliminating the need to move the movable blade in the opposite direction to the normal sheet cutting direction.
It is an object of the present invention to provide a sheet cutting device that can widen the gap between a fixed blade and a movable blade for purposes such as removing jammed sheets.

［課題を解決するための手段及び作用］本発明の目的を
達成するための要旨とするところは、シートを切断する
ために、互いに噛合可能な第１のシート切断刃と、第２
のシート切断刃とを有し、前記第１のシート切断刃は、
前記第２のシート切断刃の刃先との間隙を拡開可能な方
向に回動可能に支持されていることを特徴とするシート
切断装置にある。[Means and operations for solving the problem] The gist of the present invention to achieve the object is to provide a first sheet cutting blade that can engage with each other and a second sheet cutting blade that can be engaged with each other in order to cut a sheet.
The first sheet cutting blade has a sheet cutting blade of
The sheet cutting device is characterized in that the sheet cutting device is rotatably supported in a direction in which a gap between the second sheet cutting blade and the cutting edge can be widened.

［発明の実施例］ 以下本発明を図面に示す実施例に基づいて詳細に説明す
る。[Embodiments of the Invention] The present invention will be described in detail below based on embodiments shown in the drawings.

第１図は本発明による記録紙切断装置の一実施例を示す
斜視図である。FIG. 1 is a perspective view showing an embodiment of a recording paper cutting device according to the present invention.

図中、１は記録紙１２を跨ぐようにしてその幅方向に延
びる固定刃取付体１ａに固定刃本体２が不図示のねじに
より固定された固定刃で、固定刃取付体１ａの両端から
下方に夫々折曲形成された回動アーム片１ｂ、ｌｂの軸
孔１ｃ。In the figure, reference numeral 1 denotes a fixed blade in which a fixed blade main body 2 is fixed by screws (not shown) to a fixed blade mount 1a extending in the width direction so as to straddle the recording paper 12, and downward from both ends of the fixed blade mount 1a. Rotating arm pieces 1b and lb shaft holes 1c are respectively bent.

ＩＣが後記する可動刃３の支軸３ｄ、３ｅに回転自在に
挿通されている。The IC is rotatably inserted into support shafts 3d and 3e of the movable blade 3, which will be described later.

３は固定刃ｌに対向配置され、記録紙１２の搬送面下方
に設けられて記録紙１２の幅方向に沿って延びる可動刃
取付体３ａに可動刃本体３ｂを不図示のねじにより固定
した可動刃で、可動刃取付体３ａの両端から後方に夫々
延びる可動アーム３ｃ、３ｃに支軸３ｄ、３ｅが可動刃
本体３ｂの幅方向に沿って外方に支出されるとともに、
右側の可動アーム３ｃの基部から可動刃駆動用の駆動軸
３ｆが支軸３ｄと平行して外方に支出されている。なお
、固定刃１の固定刃本体２と可動刃３の可動刃本体３ｂ
との刃先の間隙は、可動刃３が第１図に示す記録紙非切
断位置に位置している状態で、記録紙１２が通過できる
所定の値に調整されている。Reference numeral 3 denotes a movable blade 3 which is disposed opposite to the fixed blade l, and has a movable blade main body 3b fixed by a screw (not shown) to a movable blade mounting body 3a which is provided below the conveying surface of the recording paper 12 and extends along the width direction of the recording paper 12. In the blade, support shafts 3d and 3e extend outward along the width direction of the movable blade body 3b to movable arms 3c and 3c extending rearward from both ends of the movable blade attachment body 3a, respectively, and
A drive shaft 3f for driving the movable blade extends outward from the base of the right movable arm 3c in parallel with the support shaft 3d. In addition, the fixed blade body 2 of the fixed blade 1 and the movable blade body 3b of the movable blade 3
The gap between the cutting edge and the cutting edge is adjusted to a predetermined value that allows the recording paper 12 to pass through when the movable blade 3 is located at the recording paper non-cutting position shown in FIG.

可動刃３の可動アーム３ｃ、３ｃの各両側には支軸３ｄ
、３ｅを回転自在に軸支する右側軸受板４ａと左側軸受
板４ｂとが装置本体に固定して設けられ、可動刃３を支
軸３ｄ、３ｅを支点として回動可能に支持しており、右
側軸受板４ａには可動刃３の支軸３ｄが回転自在に貫通
する軸孔４ａ−１と、後記する解除軸１１がガタなく貫
通係合する係合用軸孔４ａ−２とが夫夫穿設されている
。A support shaft 3d is provided on each side of the movable arms 3c, 3c of the movable blade 3.
, 3e are rotatably supported by a right side bearing plate 4a and a left side bearing plate 4b, which are fixed to the main body of the device and rotatably support the movable blade 3 about the support shafts 3d and 3e. The right side bearing plate 4a has a shaft hole 4a-1 through which the support shaft 3d of the movable blade 3 rotatably passes, and an engagement shaft hole 4a-2 through which a release shaft 11 (to be described later) is fitted without play. It is set up.

１１は一端に摘みｌｌａが固定された解除軸で、固定刃
１の固定刃取付体１ａにその長さ方向に沿って離隔対向
して配置された一対の支持板１３．１３を通して先端部
が右側軸受板４ａの係合用軸孔４ａ−２に貫通係合し、
可動刃３の支軸３ｄ、３ｅとともに固定刃取付体１ａの
装置本体に対する位置決めを行なっており、摘みＩｌａ
を矢印Ｂ方向に移動して右側軸受板４ａの係合用軸孔４
ａ−２との係合を解除すると、固定刃取付体１ａが支軸
３ｄ、３ｅを中心とし、回動アーム片１ｂ、ｌｂを半径
として揺動可能になる。Reference numeral 11 denotes a release shaft to which a knob lla is fixed at one end, and the tip part is inserted into the fixed blade mounting body 1a of the fixed blade 1 through a pair of support plates 13 and 13 which are arranged facing each other at a distance along the length direction of the fixed blade 1. Penetratingly engages with the engagement shaft hole 4a-2 of the bearing plate 4a,
Together with the support shafts 3d and 3e of the movable blade 3, the fixed blade attachment body 1a is positioned with respect to the main body of the device, and the knob Ila
in the direction of arrow B and insert the engaging shaft hole 4 of the right bearing plate 4a.
When the engagement with a-2 is released, the fixed blade attachment body 1a becomes swingable around the support shafts 3d and 3e and around the rotary arm pieces 1b and lb as a radius.

５は可動刃駆動機構で、大ギア９に支点ピン９ａを介し
て揺動自在に連結レバー８を取り付けるとともに、連結
レバー８の先端部に支点ピン７を介して駆動レバー６を
取り付け、モータ１０の回転軸に取付けた小ギア１０ａ
をギア１５に噛合せており、ギア１５はワンウェイクラ
ッチ１６を介してギア１７と連結されギア１７は大ギア
９に噛合せている。ここでワンウェイクラッチ１６は小
ギア１０ａをＦ方向に回した時のみギア１７とギア１５
を連結するように構成されている。駆動レバー６には可
動刃３の右側可動アーム３Ｃから平行に支出された支軸
３ｄおよび駆動！１Ｉｌ１３ｆが回転不能に夫々固定さ
れている。また２１はギア１８、ワンウェイクラッチ１
９およびギア２０からなる読取原稿を搬送する駆動機構
で、ギア１８はギア１５と噛合せており、ギア１８はギ
ア２０とワンウェイクラッチを介して連結され、ギア２
０は図示しない原稿搬送ローラーと噛合されている。こ
こてワンウェイクラッチ１９は小ギア１０ａをＦ方向に
回転した時のみギア１８とギア２０を連結するように構
成されている。そして、モータ１０により小ギア１０ａ
をＦ方向に回転させることにより大ギア９に矢印り方向
の回転を与えると、連結レバー８を介して駆動レバー６
が支軸３ｄを中心として矢印Ａ方向に回動し、駆動レバ
ー６とともに！多動する駆動軸３ｆの回動力により可動
刃取付体３ａが支＠３ｄを中心として同方向に回動する
ことで、固定刃本体２と可動刃本体３ｂとの間に挟まれ
た記録紙を切断する。この時、ワンウェイクラッチ１９
により原稿搬送ローラへの駆動の連結は切られている。5 is a movable blade drive mechanism, in which a connecting lever 8 is swingably attached to a large gear 9 via a fulcrum pin 9a, a drive lever 6 is attached to the tip of the connecting lever 8 via a fulcrum pin 7, and a motor 10 Small gear 10a attached to the rotating shaft of
is meshed with gear 15, gear 15 is connected to gear 17 via one-way clutch 16, and gear 17 is meshed with large gear 9. Here, the one-way clutch 16 connects the gear 17 and gear 15 only when the small gear 10a is turned in the F direction.
It is configured to connect. The drive lever 6 includes a support shaft 3d parallel to the right movable arm 3C of the movable blade 3 and a drive! 1Il13f are each fixed in a non-rotatable manner. Also, 21 is gear 18, one-way clutch 1
9 and a gear 20, the gear 18 meshes with the gear 15, the gear 18 is connected to the gear 20 via a one-way clutch, and the gear 20 is connected to the gear 20 through a one-way clutch.
0 is engaged with a document conveyance roller (not shown). Here, the one-way clutch 19 is configured to connect the gear 18 and the gear 20 only when the small gear 10a is rotated in the F direction. Then, the small gear 10a is driven by the motor 10.
When the large gear 9 is rotated in the direction F, the drive lever 6 is rotated via the connecting lever 8.
rotates in the direction of arrow A around the support shaft 3d, together with the drive lever 6! The movable blade mounting body 3a rotates in the same direction around the support @3d due to the rotational force of the highly active drive shaft 3f, thereby removing the recording paper sandwiched between the fixed blade body 2 and the movable blade body 3b. disconnect. At this time, one-way clutch 19
The connection of the drive to the document transport roller is cut off.

また、モータ１０により小ギア１０ａをＥ方向に回転さ
せることにより、ギア２０をＧ方向に回転させ、原稿搬
送ローラを駆動する。この時、ワンウェイクラッチ１６
により大ギア９への連結は切られている。以上の説明の
ようにモータ１０の正転逆転により原稿搬送と可動刃の
駆動とを行なっている。Further, by rotating the small gear 10a in the E direction by the motor 10, the gear 20 is rotated in the G direction, thereby driving the document conveyance roller. At this time, one-way clutch 16
As a result, the connection to the large gear 9 is disconnected. As described above, the document is conveyed and the movable blade is driven by the forward and reverse rotation of the motor 10.

１４は固定刃取付体１ａに固着された摘み部材である。14 is a knob member fixed to the fixed blade attachment body 1a.

ここで、第２図に示すように、固定刃本体２と可動刃本
体３ｂとの間に記録紙１２の紙詰まりが生じると、解除
軸１１をＢ方向に移動して右側軸受板４ａとの係合を解
除し、固定板取付体１ａを支軸３ｄ、３ｅを中心として
揺動可能な状態とし、第３図に示すように、摘み部材１
４を持って固定刃取付体１ａを矢印Ｃ方向に回動させる
ことにより、固定刃本体２と可動刃本体３ｂとの間隙が
広がり、紙詰りした記録紙１２の除去作業を容易に行な
えることとなる。Here, as shown in FIG. 2, if the paper jam of the recording paper 12 occurs between the fixed blade main body 2 and the movable blade main body 3b, the release shaft 11 is moved in the direction B and the release shaft 11 is moved to the right side bearing plate 4a. The engagement is released, the fixed plate attachment body 1a is made swingable around the support shafts 3d and 3e, and the knob member 1 is released as shown in FIG.
4 and rotate the fixed blade attachment body 1a in the direction of arrow C, the gap between the fixed blade body 2 and the movable blade body 3b is widened, making it easier to remove jammed recording paper 12. becomes.

そして、紙詰りした記録紙の除去後は、固定刃取付体１
ａを再び元の位置まで回動し、解除軸１１を右側軸受板
４ａの係合用軸孔４ａ−２に挿入することにより、記録
紙の切断可能な状態となる。After removing the jammed recording paper, the fixed blade mount 1
By rotating a again to the original position and inserting the release shaft 11 into the engagement shaft hole 4a-2 of the right bearing plate 4a, the recording paper can be cut.

なお、上記実施例は、固定刃１を固定刃取付体１ａに固
定刃本体２を固定した構造としているが、第４図に示す
ように、固定刃取付体１ａから延びる板バネ２２に固定
刃本体２を取付けるようにしてもよい。In the above embodiment, the fixed blade 1 has a structure in which the fixed blade main body 2 is fixed to the fixed blade mounting body 1a, but as shown in FIG. The main body 2 may also be attached.

［発明の効果］ 以上説明してきたように、本発明によれば、第１の記録
紙切断刃を回動させて第２の記録紙切断刃の刃先との間
隙を広げることができるので記録紙が紙詰りしても容易
に除去することができるといった効果が得られる。[Effects of the Invention] As described above, according to the present invention, the first recording paper cutting blade can be rotated to widen the gap between the first recording paper cutting blade and the cutting edge of the second recording paper cutting blade. Even if a paper jam occurs, it can be easily removed.

また本発明は、原稿の搬送手段を駆動するための駆動源
が可動刃を駆動するための駆動源とを兼用し、モータを
正転させて原稿の搬送を行ない、モータを反転させて記
録紙の切断を行う方式のファクシミリ装置等に適用すれ
ば、記録紙の紙詰まり除去を従来にも容易に行なうこと
ができる。Further, in the present invention, the drive source for driving the document transport means also serves as the drive source for driving the movable blade, and the motor is rotated in the normal direction to transport the document, and the motor is reversed to transport the recording paper. If the present invention is applied to a facsimile machine or the like that performs cutting, paper jams in recording paper can be easily removed.

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

第１図は本発明による記録紙切断装置の一実施例を示す
斜視図、第２図は紙詰り状態を示す断面図、第３図は固
定刃取付体を拡開した状態を示す断面図、第４図は他の
実施例を示す断面図である。 １：固定刃　　　　　　１ａ：固定刃取付体１ｂ：回動
アーム片　　ＩＣ：軸孔 ２：固定刃本体　　　　３：可動刃 ３ａ：可動刃取付体　　３ｂ：可動刃本体３Ｃ：可動ア
ーム　　　３ｄ、３ｅ：支軸３ｆ：駆動軸　　　　　４
ａ、４ｂ：軸受板５：可動刃駆勅称摘　　６：駆動レバ
ー７：支点ピン　　　　　８：連結レバー９．１５，１
７，１８，２０：ギア １０：モータ　　　　　１０ａ：小ギア１１：解除軸　
　　　　１２：記録紙 １３；支持板　　　　　１４：摘み部材１６．１９：ワ
ンウェイクラッチ ２１：駆動機構　　　　２２：板バネ 谷　　浩太部ｊ１ 一一一」FIG. 1 is a perspective view showing an embodiment of a recording paper cutting device according to the present invention, FIG. 2 is a sectional view showing a paper jam state, and FIG. 3 is a sectional view showing a fixed blade attachment in an expanded state. FIG. 4 is a sectional view showing another embodiment. 1: Fixed blade 1a: Fixed blade attachment body 1b: Rotating arm piece IC: Shaft hole 2: Fixed blade body 3: Movable blade 3a: Movable blade attachment body 3b: Movable blade body 3C: Movable arm 3d, 3e: Support shaft 3f: Drive shaft 4
a, 4b: Bearing plate 5: Movable blade drive pin 6: Drive lever 7: Fulcrum pin 8: Connection lever 9.15,1
7, 18, 20: Gear 10: Motor 10a: Small gear 11: Release shaft
12: Recording paper 13; Support plate 14: Knob member 16.19: One-way clutch 21: Drive mechanism 22: Leaf spring valley Kotabe j1 111

Claims (1)

【特許請求の範囲】 シートを切断するために、互いに噛合可能な第１のシー
ト切断刃と、第２のシート切断刃とを有し、 前記第１のシート切断刃は、前記第２のシート切断刃の
刃先との間隙を拡開可能な方向に回動可能に支持されて
いることを特徴とするシート切断装置。[Scope of Claims] A first sheet cutting blade and a second sheet cutting blade are capable of interlocking with each other in order to cut the sheet, and the first sheet cutting blade cuts the second sheet. A sheet cutting device characterized in that the sheet cutting device is rotatably supported in a direction in which a gap between the cutting blade and the cutting edge can be expanded.