JPH0415488Y2

JPH0415488Y2 -

Info

Publication number: JPH0415488Y2
Application number: JP6816386U
Authority: JP
Priority date: 1986-05-08
Filing date: 1986-05-08
Publication date: 1992-04-07
Also published as: JPS62180531U

Description

【考案の詳細な説明】〔産業上の利用分野〕この考案は枚葉印刷機の給紙部に適用される傷
入り防止コロ付き前当に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a front cover with scratch-preventing rollers that is applied to the paper feed section of a sheet-fed printing press.

[Conventional technology]

従来の装置においては外観上は本案のものと殆
ど変らず、本案の説明用図（第１図、第２図）を
用いて不具合がないので、同図を用いて従来の技
術を説明する。 The appearance of the conventional device is almost the same as that of the present invention, and there are no problems with the explanatory drawings of the present invention (FIGS. 1 and 2). Therefore, the conventional technique will be explained using the same drawings.

枚葉印刷機において前当１は給紙部より１枚づ
つ送られた紙を前後方向に規正する装置である。 In a sheet-fed printing press, the pre-register 1 is a device that adjusts the sheets fed one by one from the paper feed section in the front-back direction.

図のようにフイーダボード２を矢印方向に送ら
れて来た紙は当板３に当り停止する。次に前当１
のひさし部４が下向に作動してフイーダボード２
との間で紙を押える働きをする。前当１により位
置規正され停止した紙はスインググリツパ（図示
してない）が迎えに来て咬え、次工程の印刷部へ
搬送する。上のように停止した紙をスインググリ
ツパが咬えて搬送するとき、紙が当板３と前当１
に当つて邪魔になるのでスインググリツパの作動
タイミングに合せて、当板３はシヤフト７の軸心
を中心とする円弧７ａ上を、また前当１はシヤフ
ト７の軸心を中心とする円弧５ａ上をそれぞれの
最外縁部が回動運動を行つて退避し、スインググ
リツパによる紙の搬送工程が支障なく行われる。 As shown in the figure, the paper fed through the feeder board 2 in the direction of the arrow hits the contact plate 3 and stops. Next, Maetō 1
The eaves part 4 moves downward and the feeder board 2
It works to hold the paper between. A swing gripper (not shown) picks up and grips the paper, which has been stopped after being positioned by the front stopper 1, and is conveyed to the printing section for the next process. When the swing gripper grips and conveys the stopped paper as shown above, the paper is moved between the contact plate 3 and the front contact plate 1.
Therefore, in accordance with the operating timing of the swing gripper, the contact plate 3 is moved over the arc 7a centered on the axis of the shaft 7, and the front stop 1 is moved over the arc 5a centered on the axis of the shaft 7. The outermost edges of each rotate and retreat, allowing the swing gripper to carry out the paper conveyance process without any trouble.

退避した当板３と前当１は次の紙を規正するた
め同じ円弧上を元の位置へ復帰するが、このとき
前当１の最外縁部がスインググリツパで送られた
紙の紙尻の裏面に接触して紙に傷が発生する。こ
れを防止するため傷入り防止コロ８が設けられて
いるがこの傷入防止コロにつぎに述べるような問
題点があつて、かねてから改善が求められてい
た。 The evacuated stop plate 3 and front stop 1 return to their original positions on the same arc in order to adjust the next paper, but at this time, the outermost edge of front stop 1 touches the back side of the tail of the paper fed by the swing gripper. Scratches occur on the paper when it comes into contact with the paper. In order to prevent this, a scratch prevention roller 8 is provided, but this scratch prevention roller has the following problems, and improvements have been sought for some time.

[Problem that the invention attempts to solve]

傷入防止コロにより紙尻の傷防止に相当の効果
が認められるものの、依然として傷の根絶には至
らなかつた。この原因として考えられることは次
のようなものが挙げられる。 Although the scratch prevention roller was found to be quite effective in preventing scratches on the paper tail, it still did not eradicate the scratches. Possible causes of this are as follows.

１コロ孔が直接コロ軸に挿入されて、すべり接
触で回転していたため摩擦抵抗が多く、コロが
紙により回転されにくい。1. Since the roller hole was directly inserted into the roller shaft and rotated by sliding contact, there was a lot of frictional resistance, making it difficult for the roller to rotate due to the paper.

２コロ表面材質が硬質プラスチツクで出来てお
り紙に傷を付け易い。2. The roller surface material is made of hard plastic and easily scratches the paper.

[Means for solving problems]

１コロとコロ軸との間にころがり軸受を挿入す
る。 1 Insert a rolling bearing between the roller and the roller shaft.

２コロの表面材質に軟質弾性ゴムを使用する。2. Use soft elastic rubber for the surface material of the roller.

〔Example〕

第１図と第２図は本考案の実施例を示すもので
第１図は前当の側面図、第２図は前当の正面図で
ある。 Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being a side view of the front cover, and Figure 2 being a front view of the front cover.

図において１は前当、２はフイーダボード、３
は当板、４はひさし部、５と６は前当の回動ピ
ン、７はシヤフト、８は傷入り防止コロ、９はコ
ロ軸、１０はころがり軸受である。 In the diagram, 1 is the front board, 2 is the feeder board, and 3 is the feeder board.
1 is a contact plate, 4 is an eaves portion, 5 and 6 are pivot pins, 7 is a shaft, 8 is a scratch prevention roller, 9 is a roller shaft, and 10 is a rolling bearing.

そしてコロ８の表面材質に軟質弾性ゴムを使用
してある。 The surface material of the roller 8 is made of soft elastic rubber.

[Effect of idea]

本考案を実施することにより予期どおりの効果
が得られた、すなわち１コロとコロ軸との間にころがり軸受を挿入す
ることにより摩擦抵抗が減じ、次の第２項と相
俟つて紙尻の摩擦によりコロが軽く廻されるよ
うになつた。 By implementing the present invention, the expected effects were obtained, namely, 1. Frictional resistance was reduced by inserting a rolling bearing between the rollers and the roller shaft, and in conjunction with the following item 2, the paper tail was reduced. The rollers now rotate easily due to friction.

２コロの表面材質に軟質弾性ゴムを使用するこ
とにより、紙面の微細なおおとつによくコロ表
面がなじんで紙に傷を付けないし、また紙がコ
ロ表面をすべらないのですり傷が付かない。2. By using soft elastic rubber for the surface material of the roller, the roller surface adapts well to the fine grains of the paper and does not scratch the paper, and the paper does not slide on the roller surface, preventing scratches. It's fleeting.

[Brief explanation of drawings]

Claims

[Scope of utility model registration request]

Insert a rolling bearing between the roller and the roller shaft,
A front cover with anti-scratch rollers characterized by the use of soft elastic rubber for the surface material of the rollers.