JPS6320734B2

JPS6320734B2 -

Info

Publication number: JPS6320734B2
Application number: JP8156179A
Authority: JP
Inventors: Aabentorooto Pauru; Emuritsuhi Herumuuto
Original assignee: EMU AA ENU ROORANTO DORUTSUKUMASHIINEN AG
Current assignee: EMU AA ENU ROORANTO DORUTSUKUMASHIINEN AG
Priority date: 1978-06-30
Filing date: 1979-06-29
Publication date: 1988-04-28
Also published as: DE2828751B2; BR7904139A; JPS557196A; GB2027679A; DE2828751A1; CH639624A5; GB2027679B

Description

【発明の詳細な説明】産業上の利用分野本発明は枚葉紙印刷機の給紙台上で前当てによ
つて見当合わせされた印刷すべき枚葉紙を前記印
刷機の圧胴に供給するフロントグリツパを有する
枚葉紙給紙装置であつて、前記フロントグリツパ
が、正確な枚葉紙給紙に関連して電磁的にトリガ
されたグリツパ開放カムの旋回によつて開閉され
たグリツパとして形成されており、かつ、制御カ
ムによつて旋回させられる前記前当てが、見当合
わせ位置で選択的にロツク又は解除される形式の
ものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The invention relates to a sheet-fed printing press for feeding sheets to be printed, registered by means of a front plate on a feed tray, to an impression cylinder of said printing press. A sheet feeding device with a front gripper for precise sheet feeding, the front gripper being formed as a gripper which is opened and closed by a pivoting of an electromagnetically triggered gripper opening cam in conjunction with the precise sheet feeding. and in which the front cover, which is pivoted by a control cam, is selectively locked or released in the register position.

従来の技術この種の装置はドイツ連邦共和国特許第
1212114号明細書により公知である。しかしこの
装置は不経済であり、機能的に不確実である。な
んとなれば、前当てとグリツパ開放カムとが２つ
の互いに無関係な駆動装置によつて運動させられ
るからである。PRIOR TECHNOLOGY A device of this type is
It is known from specification No. 1212114. However, this device is uneconomical and functionally unreliable. This is because the front support and the gripper opening cam are moved by two mutually independent drives.

さらにドイツ連封共和国特許第1786314号明細
書によれば、前当ての運動をロツクレバーの組合
せによつてロツクすることも公知である。さらに
この装置では、前当てがロツクされたさいに、フ
ロントグリツパのつかみ作用を阻止するための手
段がまつたく欠けている。 Furthermore, it is known from German Patent No. 1786314 to lock the movement of the front stopper by means of a combination of locking levers. Furthermore, this device lacks any means for preventing the gripping action of the front gripper when the front grip is locked.

本発明が解決しようとする問題点本発明の課題は、誤つて供給された枚葉紙又は
その枚葉紙の部分がフロントグリツパによつてつ
かまれて印刷機に送られるとこがないようにする
とともに、確実な機能で簡単に制御されかつコン
パクトな構成によつて小形の印刷機にも使用され
得るような枚葉紙給紙装置を提供することにあ
る。Problems to be Solved by the Invention It is an object of the invention to prevent erroneously fed sheets or parts of sheets from being grabbed by the front gripper and fed into the printing press; It is an object of the present invention to provide a sheet feeding device which can be easily controlled with reliable functions and can be used even in small-sized printing presses due to its compact construction.

問題点を解決するための手段上記課題を解決した本発明の構成によれば、前
記グリツパ開放カムと前当てとを、給紙された枚
葉紙と同一タイミングで往復運動せしめる１つの
共通のカム装置が設けられており、このカム装置
が、前記制御カムとこれによつて駆動されるロー
ラ付きレバーとから成つており、同カム装置をロ
ツクすべく電磁的に操作される爪が設けられてお
り、かつ、前記グリツパ開放カムと前当てとの間
の運動伝達経路内に、同前当ての運動をグリツパ
開放カムの運動に対して遅らせる遅延機構が設け
られている。爪の操作のためには１つの電磁石を
使用すれば足る。この爪は僅かな慣性しかしない
ために極めて迅速に操作される。Means for Solving the Problems According to the configuration of the present invention that solves the above problems, one common cam is used to reciprocate the gripper opening cam and the front stopper at the same timing as the fed sheets. A cam arrangement is provided, the cam arrangement comprising the control cam and a roller lever driven by the control cam, and an electromagnetically operated pawl for locking the cam arrangement. and a delay mechanism is provided in the motion transmission path between the gripper opening cam and the front rest to delay the movement of the front rest with respect to the movement of the gripper opening cam. It is sufficient to use one electromagnet for the operation of the claw. This pawl has little inertia and is therefore operated very quickly.

本発明の特にコンパクトな実施例では、前記グ
リツパ開放カムが、ローラ付きレバー及び連結部
材を介して１つの制御カムによつて往復回転振動
させられるブツシユに固定されており、前記前当
てが、同ブツシユ内に回動可能に支承された棒に
固定されており、かつ、同ブツシユの運動を同棒
に伝達するためのばね付き棒とストツパとが設け
られており、このばね付き棒が前記遅延機構を形
成している。 In a particularly compact embodiment of the invention, the gripper release cam is fixed via a lever with rollers and a coupling member to a bush which is rotatably oscillated to and fro by a control cam, and the front abutment is A spring-loaded rod and a stopper are provided which are fixed to a rod rotatably supported within the bush and for transmitting the movement of the bush to the rod, and the spring-loaded rod is connected to the delay It forms a mechanism.

次に図示の実施例につき本発明を具体的に説明
する。 Next, the present invention will be specifically explained with reference to the illustrated embodiments.

印刷すべき枚葉紙１は給紙台２上で前当て３と
横当て（図示せず）とによつて見当合わせされ
て、給紙台２と圧胴５との間を往復振動するフロ
ントグリツパ４によつて印刷機の圧胴５に送られ
る。フロントグリツパ４の往復振動の機構の原理
はすでに久しく公知であり、これについては例え
ば特開昭48−4109号公報を参照せられたい。本発
明の場合は、往復振動するフロントグリツパ４の
グリツパ爪６の開閉運動はローラ付きレバー８と
グリツパ開放カム９との協働によつて行われる。
グリツパ爪６は図示しないばねによつて常に爪当
に当接するように付勢されており、フロントグリ
ツパ４が給紙台２へ向かつて振動すると、グリツ
パ爪軸７を介してグリツパ爪６に固定されたロー
ラ付きレバー８のローラがグリツパ開放カム９に
当接し、これによつてローラ付きレバー８はグリ
ツパ爪軸７を中心として、図示しない前記ばねの
力に逆つて時計回りに旋回し、これによつてグリ
ツパ爪６が爪当てから持ち上げられて開く。フロ
ントグリツパ４が、給紙台２上の枚葉紙を掴むこ
とのできる位置まで振動して来ると、以下に説明
する機構によつてグリツパ開放カム９が第１図の
位置から上方へ旋回させられる。これによつてロ
ーラ付きレバー８が図示しないばねの力によつて
逆時計回りに旋回してグリツパ爪６を閉じる。そ
のさい、グリツパ爪６が枚葉紙を掴む。次いで以
下に説明する本発明の遅延機構を介して前当て３
が上方へ旋回する。 A sheet 1 to be printed is registered on a paper feed table 2 by a front support 3 and a side support (not shown), and a front gripper vibrates back and forth between the paper feed table 2 and an impression cylinder 5. 4 to the impression cylinder 5 of the printing press. The principle of the mechanism for the reciprocating vibration of the front gripper 4 has been known for a long time; see, for example, Japanese Patent Laid-Open No. 48-4109. In the case of the present invention, the opening/closing movement of the gripper pawls 6 of the front gripper 4 which reciprocates and vibrates is performed by the cooperation of a lever with a roller 8 and a gripper opening cam 9.
The gripper claws 6 are always urged by a spring (not shown) so as to come into contact with the claw rest, and when the front gripper 4 vibrates toward the paper feed tray 2, the gripper claws 6 are fixed to the gripper claws 6 via the gripper claw shaft 7. The roller of the lever 8 with rollers contacts the gripper release cam 9, and the lever 8 with rollers rotates clockwise around the gripper pawl shaft 7 against the force of the spring (not shown). The gripper claws 6 are then lifted from the claw rest and opened. When the front gripper 4 vibrates to a position where it can grip a sheet on the paper feed table 2, the gripper release cam 9 is pivoted upward from the position shown in FIG. 1 by a mechanism described below. . As a result, the roller lever 8 is rotated counterclockwise by the force of a spring (not shown) to close the gripper claws 6. At that time, the gripper claws 6 grip the sheet of paper. The preload 3 is then processed via the delay mechanism of the present invention as described below.
rotates upward.

機械の側フレーム１２にはブツシユ１１が支承
されており、このブツシユ１１は自体に固定され
たアーム２８と連結部材１３と、ばね負荷された
ローラ付きレバー１４とを介して制御カム１５に
よつて往復旋回させられる。ローラ付きレバー１
４のローラ１６は正常運動状態ではばね付き棒１
７によつて常時制御カム１５に圧着される。 A bush 11 is supported on the side frame 12 of the machine and is actuated by a control cam 15 via an arm 28 fixed to the bush 11, a coupling member 13 and a spring-loaded roller lever 14. Can be rotated back and forth. Lever with roller 1
The roller 16 of 4 is a spring-loaded rod 1 in the normal motion state.
7, it is constantly pressed against the control cam 15.

ブツシユ１１に回転可能に支承された棒１８に
は前当て３及びアーム２１が固定されている。ブ
ツシユ１１にはアーム１９が固定的に結合されて
いる。このアーム１９はグリツパ開放カム９と一
体に形成されており、かつ遅延機構として形成さ
れたばね付き棒２０に枢着されている。このばね
付き棒２０は上端に運動制限部材２２を備えてお
り、同運動制限部材２２を備えたばね付き棒２０
は隙間２４を以つてアーム２１に遊嵌されてお
り、同ばね付き棒２０のばねは、運動制限部材２
２が同アーム２１に接触するまでは、同アーム２
１をストツパ２３に圧着せしめている。この構成
によつて、ブツシユ１１ひいてはグリツパ開放カ
ム９の旋回運動がばね付き棒２０を介して前当て
３に伝達されるとともに、ストツパ２３に対して
運動制限部材２２の位置をずらして配置すること
によつて生じる鎖間２４が、グリツパ開放カム９
に対する前当て３の旋回の時間的遅れを規定す
る。即ち、ブツシユ１１が第１図で時計回りに回
動した場合、前当て３は隙間２４によつて規定さ
れた時間的な遅れだけ遅れて旋回させられる。要
するに、正常運転、つまり枚葉紙１が正しく見当
合わせられた場合には、まずグリツパ開放カム９
がローラ付きレバー８の軌道から外れて上方へ旋
回し、これによつてグリツパ６が閉じて枚葉紙を
つかみ、しかる後に、運動制限部材２２がアーム
２１に接触してはじめて前当て３が枚葉紙の運動
軌道から外れて上方へ旋回させられる。 A front piece 3 and an arm 21 are fixed to a rod 18 rotatably supported on the bush 11. An arm 19 is fixedly connected to the bush 11. This arm 19 is formed integrally with the gripper opening cam 9 and is pivoted on a spring-loaded rod 20 which is designed as a delay mechanism. This spring loaded rod 20 is provided with a movement limiting member 22 at the upper end, and the spring loaded rod 20 provided with the movement limiting member 22 is
is loosely fitted to the arm 21 with a gap 24, and the spring of the spring-loaded rod 20 is loosely fitted to the arm 21 with a gap 24.
Until arm 2 contacts arm 21, arm 2
1 is crimped onto the stopper 23. With this configuration, the pivoting motion of the bush 11 and hence the gripper release cam 9 is transmitted to the front stopper 3 via the spring-loaded rod 20, and the position of the movement limiting member 22 is shifted relative to the stopper 23. The interchain 24 caused by the gripper release cam 9
The time delay of the rotation of the front stopper 3 relative to the rotation time is defined. That is, when the bush 11 is rotated clockwise in FIG. 1, the front cover 3 is rotated after a time delay defined by the gap 24. In short, in normal operation, i.e. when the sheet 1 is correctly registered, first the gripper release cam 9
moves out of the orbit of the roller lever 8 and pivots upwards, which causes the gripper 6 to close and grip the sheet, and only after the movement limiting member 22 comes into contact with the arm 21 does the front cover 3 release the sheet. The leaf is deviated from its trajectory and is rotated upwards.

制御カム１５によつて運動させられるすでに述
べたローラ付きレバー１４は連結部材１３とは逆
の端部で固定ヒンジ２９に枢着されておりかつ同
端部に突出部２７を備えている。 The already mentioned roller lever 14, which is moved by a control cam 15, is pivoted at its end opposite the coupling member 13 to a fixed hinge 29 and is provided with a projection 27 at the same end.

枚葉紙が見当合わせよく給紙台２上に位置して
いるときに、グリツパ開放カム９及び前当て３の
すでに述べた旋回運動を可能ならしめて、圧胴へ
の枚葉紙の正常な引渡しをトリガすると共に、枚
葉紙が不規則的に給紙台２上に位置したときに、
グリツパ開放カム９及び前当て３の旋回運動をロ
ツクし、圧銅５への枚葉紙の引渡しを阻止するた
めに、電磁的に例えば電磁石２６によつて操作さ
れ、ローラ付きレバー１４の旋回、ひいてはグリ
ツパ開放カム９及び前当て３の旋回運動を阻止す
る爪２５が設けられており、この爪２５は本実施
例では二腕レバー３０に設けられており、二腕レ
バー３０を介して電磁石２６によつて操作され
る。電磁石２６によつて爪２５がローラ付きレバ
ー１４の突出部２７の旋回運動の軌道内に突入し
て突出部２７に当接されると、ローラ付きレバー
１４が第１図で逆時計回りに旋回できなくなるた
め、ローラ１６はばね付き棒１７の押圧力にも拘
らず制御カム１５に追従できない。これによつて
グリツパ開放カム９及び前当て３の旋回運動がロ
ツクされる（第１図）。再び枚葉紙が給紙台２上
に見当合わせよく位置するようになると、電磁石
２６によつて爪２５が突出部２７の旋回運動軌道
から外され、これによつてローラ付きレバー１４
が旋回可能となり、グリツパ開放カム９及び前当
て３の正常な旋回運動がトリガされる。 The above-mentioned pivoting movement of the gripper opening cam 9 and the front cover 3 is made possible when the sheet is located in register on the feed tray 2, so that the sheet can be transferred normally to the impression cylinder. When the sheet is irregularly positioned on the paper feed tray 2,
In order to lock the pivoting movement of the gripper opening cam 9 and the front stopper 3 and to prevent the transfer of the sheet to the press 5, a pivoting of the lever 14 with rollers, which is actuated electromagnetically, for example by an electromagnet 26, is activated. Furthermore, a pawl 25 is provided to prevent the gripper release cam 9 and the front guard 3 from pivoting. In this embodiment, this pawl 25 is provided on a two-arm lever 30, and the electromagnet 26 is connected via the two-arm lever 30. operated by. When the electromagnet 26 causes the pawl 25 to enter the orbit of the turning movement of the protrusion 27 of the lever with roller 14 and come into contact with the protrusion 27, the lever with roller 14 rotates counterclockwise in FIG. Therefore, the roller 16 cannot follow the control cam 15 despite the pressing force of the spring-loaded rod 17. This locks the pivoting movement of the gripper opening cam 9 and the front stopper 3 (FIG. 1). Once the sheets are again in good register on the feed tray 2, the electromagnet 26 removes the pawl 25 from the path of the pivoting movement of the projection 27, so that the roller lever 14
can be pivoted, and the normal pivoting movement of the gripper opening cam 9 and the front stopper 3 is triggered.

[Brief explanation of the drawing]

第１図は本発明の１実施例の部分断面側面図及
び第２図はアームを90度展開して示す第１図の平
面である。１……枚葉紙、２……給紙台、３……前当て、
４……フロントグリツパ、５……圧胴、６……グ
リツパ爪、７……グリツパ爪軸、８……ローラ付
きレバー、９……グリツパ開放カム、１１……ブ
ツシユ、１２……側フレーム、１３……連結部
材、１４……ローラ付きレバー、１５……制御カ
ム、１６……ローラ、１７……ばね付き棒、１８
……棒、１９……アーム、２０……ばね付き棒、
２１……アーム、２２……運動制限部材、２３…
…ストツパ、２４……隙間、２５……爪、２６…
…電磁石、２７……突出部、２８……アーム、２
９……固定ヒンジ、３０……二腕レバー。 FIG. 1 is a partially sectional side view of one embodiment of the present invention, and FIG. 2 is a plan view of FIG. 1 showing the arm unfolded at 90 degrees. 1...Sheet paper, 2...Paper feed stand, 3...Front cover,
4...Front gripper, 5...Impression cylinder, 6...Gripper claw, 7...Gripper claw shaft, 8...Lever with roller, 9...Gripper opening cam, 11...Button, 12...Side frame, 13 ... Connecting member, 14 ... Lever with roller, 15 ... Control cam, 16 ... Roller, 17 ... Rod with spring, 18
...rod, 19...arm, 20...spring rod,
21...Arm, 22...Movement limiting member, 23...
...Stopper, 24...Gap, 25...Claw, 26...
...Electromagnet, 27...Protrusion, 28...Arm, 2
9...Fixed hinge, 30...Two-arm lever.

Claims

[Scope of Claims] 1. A front gripper 4 for feeding sheets 1 to be printed, registered by a front plate 3 on a feed tray 2 of a sheet-fed printing press, to an impression cylinder 5 of said printing press. a sheet feeding device comprising: a front gripper 4 in the form of a gripper which is opened and closed by an electromagnetically triggered pivoting of a gripper opening cam 9 in connection with precise sheet feeding; In the case where the gripper release cam 9 and the front cover 3 are rotated by a control cam 15 and are selectively locked or released at the registration position, the gripper release cam 9 and the front cover 3 are A common cam device is provided for reciprocating the sheets 1 at the same timing, and this cam device consists of the control cam 15 and a lever 14 with a roller driven by the control cam 15. An electromagnetically actuated pawl 25 is provided for locking the cam device, and a pawl 25 is provided in the motion transmission path between the gripper opening cam 9 and the front stop 3 to prevent movement of the front stop 3. A sheet feeding device having a control device, characterized in that a delay mechanism 20 is provided for delaying the movement of the gripper opening cam 9. 2. A bushing 1 in which the gripper release cam 9 is reciprocated and vibrated by one control cam 15 via a lever with a roller 14 and a connecting member 13.
1, and the front support 3 is fixed to a rod 18 rotatably supported in the bush 11, and the movement of the bush 11 is controlled by the rod 1.
Spring-loaded rod 20 and stopper 2 for transmitting data to
3. A sheet feeder according to claim 1, wherein the spring-loaded rod 20 forms the delay mechanism. 3. In order to adjust the delay in the movement of the front stopper 3 with respect to the movement of the gripper opening cam 9, a movement limiting member 22 is disposed on the spring-loaded rod 20 so as to be movably adjustable. sheet feeder. 4. A sheet feeder according to claim 3, wherein the stopper 23 is adjustable.