JPS6354619B2

JPS6354619B2 -

Info

Publication number: JPS6354619B2
Application number: JP299682A
Authority: JP
Inventors: Hiroshi Sanada
Original assignee: Toppan Printing Co Ltd
Current assignee: Toppan Inc
Priority date: 1982-01-12
Filing date: 1982-01-12
Publication date: 1988-10-28
Also published as: JPS58119521A

Description

【発明の詳細な説明】本発明は打抜刷本等の抄い取り装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting device for punching books and the like.

周知のように打抜刷本とはツナギを残して大部
分が所定の形状に打抜かれた多丁付の印刷物のこ
とであつて、通常ムシリ機を用いてツナギをムシ
る（ちぎり取る）と箱等のブランクスが得られ
る。 As is well-known, a punched book is a multi-column printed book in which most of the parts are punched out into a predetermined shape, leaving the sleeves intact.Usually, when the sleeves are ripped out using a mushiri machine, the box is removed. Blanks such as the following can be obtained.

従来ムシり機に対する打抜刷本の供給はすべて
手積みにより行われており、この場合非常に非能
率的であるばかりでなく、手積み作業中にツナギ
がちぎれたりして打抜刷本がバラバラになるとい
う不都合があつた。 Conventionally, the supply of punched books to the mushi machine has been done by hand stacking, which is not only extremely inefficient, but also causes the punched books to fall apart due to the sleeves breaking during the manual stacking process. There was an inconvenience.

本発明は上述の欠点を解消し、テーブルリフタ
ー上に予め供給されている打抜刷本を適正量づつ
ムシリ機のテーブルの上に能率的に移送でき、し
かも打抜刷本が損傷したりバラバラになつたりす
ることのない打抜刷本等の抄い取り装置を提供し
ようとするものである。 The present invention solves the above-mentioned drawbacks, and enables the efficient transfer of the punched books pre-supplied on the table lifter onto the table of the mushiri machine in appropriate amounts, while preventing the punched books from being damaged or falling apart. It is an object of the present invention to provide a device for cutting out punched books, etc., which does not cause damage.

本発明につき図示の実施例によつて説明するが
第１図は本発明の打抜刷本等の抄い取り装置の外
観説明図である。 The present invention will be explained with reference to the illustrated embodiments, and FIG. 1 is an explanatory view of the external appearance of a machine for cutting out punched books, etc. of the present invention.

１は架台であり、２はその上に敷設された走行
レールであつて、車軸３に設けられた前輪４と駆
動軸５に設けられた後輪６によつて走行レール２
の上に支持された台車７と、台車７に設けられた
モーター８と駆動軸５に設けられたスプロケツト
９とチエーン１０とによつて駆動軸５を回転駆動
させて台車７を前進または後進するようにしてあ
る。 Reference numeral 1 designates a frame, and reference numeral 2 designates a running rail laid thereon.
The truck 7 supported above, the motor 8 provided on the truck 7, the sprocket 9 provided on the drive shaft 5, and the chain 10 rotate the drive shaft 5 to move the truck 7 forward or backward. It's like this.

また台車７には上部駆動ローラー１１と上部仕
分けローラー１２との間に上部無端ベルト１３を
張設、台車７にはさらに下部駆動ローラー１４を
設け下部仕分けローラー１５との間に上部無端ベ
ルト１３と対称をなす下部無端ベルト１６を張設
する。さらに駆動軸５にスプロケツト１７と下部
駆動ローラー１４にスプロケツト１８を設けてそ
の間にチエーン１９を張り、下部駆動ローラー１
４を回転駆動させて下部無端ベルト１６を順回転
（時計の針と同方向）および逆回転させるように
し、下部無端ベルトの回転手段とする。 In addition, an upper endless belt 13 is stretched between the upper driving roller 11 and the upper sorting roller 12 on the trolley 7, and a lower driving roller 14 is further installed on the trolley 7, and the upper endless belt 13 is stretched between the lower driving roller 11 and the upper sorting roller 15. A symmetrical lower endless belt 16 is stretched. Further, a sprocket 17 is provided on the drive shaft 5 and a sprocket 18 is provided on the lower drive roller 14, and a chain 19 is stretched between them.
4 is rotationally driven to rotate the lower endless belt 16 forwardly (in the same direction as the clock hands) and reversely, thereby serving as a means for rotating the lower endless belt.

下部駆動ローラー１４にはギア２０を、また上
部駆動ローラー１１にキア２１を設け、ギア２０
と２１とによつて上部無端ベルト１３が回転す
る。下部駆動ローラー１４が順回転の時には上部
駆動ローラー１１を逆回転させて上部無端ベルト
１３を逆回転させ、上部駆動ローラー１１には一
方クラツチ２２を設け、これにより下部駆動ロー
ラー１４が逆回転したときに上部駆動ローラー１
１の回転を停止させて上部無端ベルト１３の回転
を停止させるようにし、上部無端ベルト１３の回
転および停止手段とする。 The lower drive roller 14 is provided with a gear 20, and the upper drive roller 11 is provided with a gear 21.
The upper endless belt 13 is rotated by and 21. When the lower drive roller 14 rotates forward, the upper drive roller 11 rotates in the opposite direction, causing the upper endless belt 13 to rotate in the opposite direction, and the upper drive roller 11 is provided with a clutch 22 on one side, so that when the lower drive roller 14 rotates in the reverse direction, upper drive roller 1
The rotation of the upper endless belt 13 is stopped by stopping the rotation of the upper endless belt 13, and serves as a means for rotating and stopping the upper endless belt 13.

２３は台車押上手段である。該台車押上手段２
３は第１図および第５図イ，ロに示すように先端
に回転自在なコロ２５を設けた押上棒２４とソレ
ノイド２６とから成る。押上棒２４は架台１に軸
２７で支持されるとともに架台１に固定されたソ
レノイド２６の作動によつて軸２７を支点にスイ
ングし、その先端即ちコロ２５の位置と高さを変
化させる。すなわち台車押上手段２３はソレノイ
ド２６を作動させた時に、押上棒２４がコロ２５
を介して台車７の後部底面に円滑に当接し、かつ
台車７を押上げて後輪６を走行レール２から浮き
上がらせるようにしたものである。尚台車７のコ
ロ２５が当接する面を第５図イ，ロのように一部
凹面状の受座２８としコロ２５と嵌合しやすくし
てもよい。台車押上手段後輪を浮き上がらせるも
のであれば任意である。 23 is a means for pushing up the cart. The trolley pushing means 2
As shown in FIGS. 1 and 5A and 5B, 3 comprises a push-up rod 24 having a rotatable roller 25 at its tip and a solenoid 26. The push-up bar 24 is supported by a shaft 27 on the pedestal 1, and swings about the shaft 27 as a fulcrum by the operation of a solenoid 26 fixed to the pedestal 1, thereby changing the position and height of its tip, that is, the roller 25. That is, when the bogie push-up means 23 operates the solenoid 26, the push-up bar 24 moves against the roller 25.
The rear wheel 6 is smoothly abutted on the rear bottom surface of the truck 7 via the rear wheel 2, and the truck 7 is pushed up to lift the rear wheel 6 off the running rail 2. The surface of the truck 7 that the rollers 25 come into contact with may be made into a partially concave seat 28 as shown in FIGS. 5A and 5B to facilitate engagement with the rollers 25. Any means can be used as long as it lifts up the rear wheel of the truck.

またギア２０と２１とにより上部無端ベルト１
３と下部無端ベルト１６の速度を同じにする。す
なわちギア２０とギア２１との比を上部駆動ロー
ラー１１の径に上部無端ベルト１３の厚さを加え
たものと下部駆動ローラー１４の径に下部無端ベ
ルト１６の厚さを加えたものとの比に等しくする
ことにより可能である。同様にスプロケツト１７
とスプロケツト１８は下部駆動ローラー１４の径
に下部無端ベルト１６の厚さを加えたものと後輪
６の径との比に等しくすることによつて台車７の
速度と上部および下部無端ベルト１３，１６の速
度を同じにする。 Also, gears 20 and 21 cause the upper endless belt 1 to
3 and the speed of the lower endless belt 16 are made the same. That is, the ratio of the gears 20 and 21 is the ratio of the diameter of the upper drive roller 11 plus the thickness of the upper endless belt 13 to the diameter of the lower drive roller 14 plus the thickness of the lower endless belt 16. This is possible by making it equal to . Similarly, sprocket 17
and sprocket 18 are made equal to the ratio of the diameter of the lower drive roller 14 plus the thickness of the lower endless belt 16 and the diameter of the rear wheel 6, thereby controlling the speed of the truck 7 and the upper and lower endless belts 13, 16 speeds are the same.

上記した「前進」とは図において右の方に進む
ことを、また「後進」とは左の方に進むことを意
味する。これらの装置は後述するようにすべて電
気的に制御されるものである。 The above-mentioned "forward" means to move to the right in the figure, and "reverse" means to move to the left. All of these devices are electrically controlled as will be described later.

第１図においてモーター８を順回転させること
によりチエーン１０およびスプロケツト９を介し
て駆動軸５を順回転させると、駆動軸５に設けら
れた後輪６も順回転して台車７が前進を開始する
と同時にスプロケツト１７、チエーン１９、スプ
ロケツト１８を介して駆動ローラー１４および下
部無端ベルト１６を順回転するとともにギア２０
とギア２１を介して上部駆動ローラー１１および
上部無端ベルト１３が逆回転する。 In FIG. 1, when the drive shaft 5 is sequentially rotated through the chain 10 and the sprocket 9 by sequentially rotating the motor 8, the rear wheels 6 provided on the drive shaft 5 also rotate sequentially, and the truck 7 starts moving forward. At the same time, the drive roller 14 and the lower endless belt 16 are sequentially rotated via the sprocket 17, chain 19, and sprocket 18, and the gear 20
The upper drive roller 11 and the upper endless belt 13 rotate in the opposite direction via the gear 21.

第２図は打抜刷本等の所定量をムシリ機に適正
量供給する動作の説明図でありイ図はテーブルリ
フターGL上に載置された打抜刷本Ａのうちムシ
リ機XLに供給すべき適正量の打抜刷本Ｂの端部
を持ち上げることによつて形成される楔状空間Ｓ
に上述した前進状態にある台車７の先端部を進入
させると同時に打抜刷本Ｂの持上げた端部を上部
無端ベルト１３上に乗せる。次いでロ図のように
台車７を更に前進させるとリミツトスイツチ（図
示せず）が作動して台車７が停止するが、この間
台車７は上部および下部仕分けローラー１２，１
５によつて打抜刷本A′に対して打抜刷本Ｂを引
き分けながら前進するとともに打抜刷本Ｂを逆回
転している上部無端ベルト１３上に抄い取り、且
つ残つた打抜刷本A′の表面を順回転している下
部無端ベルト１６によつて下から押えながら停止
するまで前進する。このときギア２１とギア２０
の速比Z₂₁／Z₂₀は次の通りである。 Figure 2 is an explanatory diagram of the operation of supplying an appropriate amount of a predetermined amount of punched books, etc. to the shaving machine, and Figure A shows which of the punched books A placed on the table lifter GL should be fed to the shaving machine XL. A wedge-shaped space S formed by lifting the end of an appropriate amount of punched book B
At the same time, the tip of the carriage 7 which is in the forward movement state is advanced, and at the same time the lifted end of the punched book B is placed on the upper endless belt 13. Next, when the trolley 7 is further advanced as shown in Fig. 2, a limit switch (not shown) is activated and the trolley 7 is stopped.
5, the punched book B is separated from the punched book A' and moved forward, and the punched book B is cut onto the upper endless belt 13 which is rotating in the reverse direction, and the remaining punched book A' It moves forward until it stops while being pressed from below by the lower endless belt 16, which is rotating in the forward direction. At this time, gear 21 and gear 20
The speed ratio Z ₂₁ /Z ₂₀ is as follows.

Z₂₁／Z₂₀＝（上部駆動ローラー１１の直径）＋（上部
無端ベルト１３の厚さ）／（下部駆動ローラー１４の直
径）＋（下部無端ベルト１６の厚さ）またスプロケツト１７とスプロケツト１８の連比
Z₁₈／Z₁₇は Z₁₈／Z₁₇＝（後輪６の直径）／（下部駆動ローラー１
４の直径）＋（下無端ベルト１６の厚さ）という関係、すなわち台車７、上部無端ベルト１
３、下部無端ベルト１６の各々の速度が同じであ
るという関係によつて打抜刷本A′および打抜刷
本Ｂに対する相対速度が０となるので下部および
上部無端ベルト１６，１３が各々接触している打
抜刷本A′，Ｂに対して、これを損傷するような
無理な力がかからず安定して円滑に刷本を抄い取
ることができる。 Z ₂₁ /Z ₂₀ = (diameter of upper drive roller 11) + (thickness of upper endless belt 13) / (diameter of lower drive roller 14) + (thickness of lower endless belt 16) continuous ratio
Z ₁₈ / Z ₁₇ = (diameter _of rear wheel 6) / ( _lower drive roller 1)
4 diameter) + (thickness of the lower endless belt 16), that is, the trolley 7, the upper endless belt 1
3. Due to the relationship that the speeds of the lower endless belts 16 are the same, the relative speeds to the punched sheets A' and the punched sheets B are 0, so the lower and upper endless belts 16 and 13 are in contact with each other. It is possible to stably and smoothly punch out the punched copies A' and B without applying excessive force that might damage them.

この様な状態から、モーター８を逆回転させる
ことによつてチエーン１０、スプロケツト９を介
して駆動軸５を逆回転させると駆動軸５に設けら
れた後輪６が逆回転して台車７が後進を開始する
と同時にスプロケツト１７、チエーン１９、スプ
ロケツト１８は回転せず停止したまゝである。 In such a state, when the drive shaft 5 is reversely rotated via the chain 10 and sprocket 9 by rotating the motor 8 in the reverse direction, the rear wheel 6 provided on the drive shaft 5 is rotated in the reverse direction, and the truck 7 is rotated in the reverse direction. At the same time as starting the reverse movement, the sprocket 17, chain 19, and sprocket 18 remain stopped without rotating.

次いで第１図および第２図ハに示すように台車
７を更に後進させると架台１に設けられたリミツ
トスイツチ３０に、台車７に設けられた端子３１
が当接し、リミツトスイツチ３０が作動して台車
７は最初の位置で停止するが、この間に台車７は
上部無端ベルト１３上に抄い取られた打抜刷本Ｂ
を上部無端ベルト１３の回転が停止した状態でそ
の上に乗せて移送するとともに、逆回転している
下部無端ベルト１６によつて打抜刷本A′の表面
を押えながら最初の位置まで後進する。この時、
前述のように台車７と下部無端ベルト１６の速度
が同じである関係によつて打抜刷本A′に対する
相対速度が０となるので下部無端ベルト１６と接
触している打抜刷本A′に対してこれを損傷する
ような無理な力がかからない。 Next, as shown in FIG. 1 and FIG.
contact, the limit switch 30 is activated, and the carriage 7 stops at the initial position. During this time, the carriage 7 carries the punched book B which has been cut out on the upper endless belt 13.
is carried on top of the upper endless belt 13 with its rotation stopped, and is moved backward to the initial position while pressing the surface of the punched book A' by the lower endless belt 16 which is rotating in the opposite direction. At this time,
As mentioned above, since the speeds of the cart 7 and the lower endless belt 16 are the same, the relative speed to the punched book A' becomes 0. Do not apply excessive force that could damage it.

次いで第１図および第２図ニ図に示すようにエ
アシリンダーを作動させ押圧手段２３によつて台
車７の後部を押し上げ、後輪６を走行レール２か
ら浮上させる。更に第２図ホ図のようにモーター
８を順回転させることによつてチエーン１０、ス
プロケツト９を介して駆動軸５を順回転させる。
この時上述のように後輪６が走行レール２から浮
上しているために台車７は前進せず最初の位置で
停止したまゝであるがスプロケツト１７、チエー
ン１９、スプロケツト１８を介して下部駆動ロー
ラー１４および下部無端ベルト１６が順回転する
と同時にギア２０、ギア２１を介して上部駆動ロ
ーラー１１および上部無端ベルト１３が逆回転す
るので上部無端ベルト１３にある打抜刷本Ｂはム
シリ機のテーブルGXL上に移送される。 Next, as shown in FIGS. 1 and 2D, the air cylinder is activated and the pushing means 23 pushes up the rear part of the truck 7, causing the rear wheels 6 to float above the running rails 2. Furthermore, by rotating the motor 8 in the forward direction as shown in FIG. 2, the drive shaft 5 is rotated in the forward direction via the chain 10 and the sprocket 9.
At this time, as mentioned above, the rear wheel 6 is floating above the running rail 2, so the truck 7 does not move forward and remains stopped at the initial position, but the lower part is driven through the sprocket 17, chain 19, and sprocket 18. At the same time as the roller 14 and the lower endless belt 16 rotate in the forward direction, the upper drive roller 11 and the upper endless belt 13 rotate in the reverse direction via the gears 20 and 21, so that the punched book B on the upper endless belt 13 is rotated on the table GXL of the Musiri machine. transferred above.

次いで第２図ヘ図の様に、押し上げ手段２３を
解除することにより台車７の後輪６を走行レール
２上に戻す。 Next, as shown in FIG. 2, by releasing the push-up means 23, the rear wheels 6 of the truck 7 are returned to the running rail 2.

以上の様にして本発明の打抜刷本の抄い取り装
置の１サイクルが完了する。したがつて本発明の
打抜刷本抄い取り装置はテーブルリフター上から
打抜刷本をムシリ機のテーブル上に能率的に移送
でき、その上刷本が損傷したりすることなく移送
できるという秀れた特徴を有する。 In the manner described above, one cycle of the punched book cutting device of the present invention is completed. Therefore, the machine for removing punched books of the present invention has the advantage of being able to efficiently transfer the punched books from the table lifter onto the table of the mushiri machine without damaging the printed books. It has the following characteristics.

また他の実施例として上部無端ベルト１３とこ
れと対称をなす下部無端ベルト１６の配設は第３
図の説明図に示すように補助ローラーＲを用いて
先端を嘴状にすることもできる。この場合は前述
したように楔状空間Ｓに先端部を確実に進入させ
ることができるばかりでなく、打抜刷本Ｂを円滑
に上部無端ベルト１３上に抄い取ることができ
る。 In another embodiment, the upper endless belt 13 and the lower endless belt 16 symmetrical to the upper endless belt 13 are arranged in a third embodiment.
As shown in the explanatory diagram of the figure, the tip can be shaped into a beak using an auxiliary roller R. In this case, as described above, not only can the leading end be reliably entered into the wedge-shaped space S, but also the punched book B can be smoothly cut onto the upper endless belt 13.

下部無端ベルト１６は第４図の説明図に示すよ
うにしてもよい。この場合は仕分けローラー１５
をチエーンＣによつて駆動させればよい。 The lower endless belt 16 may be constructed as shown in the explanatory diagram of FIG. In this case, the sorting roller 15
may be driven by chain C.

台車押上手段２３は第６図イ，ロに示すように
エアシリンダー５０を用いてその作動によりロツ
ド５１を上下させ台車７の後部を押し上げるよう
にしてもよい。 As shown in FIGS. 6A and 6B, the truck pushing means 23 may use an air cylinder 50 to raise and lower a rod 51 to push up the rear portion of the truck 7.

さらに台車押上手段２３は第７図イ，ロに示す
ようにボス６１に支持された押上棒６０をモータ
ー６３により回転するカム６２によつて上下動さ
せ台車７の後部を押し上げるようにしてもよい。 Furthermore, as shown in FIGS. 7A and 7B, the truck pushing up means 23 may be configured such that a push up bar 60 supported by a boss 61 is moved up and down by a cam 62 rotated by a motor 63 to push up the rear part of the truck 7. .

[Brief explanation of the drawing]

第１図は本発明の打抜刷本等の抄い取り装置の
外観図、第２図は同じくこの装置の作動の説明図
であり、イ，ロ，ハ，ニ，ホ，ヘは工程の１サイ
クルの順序を示し、第３図は同じく本発明装置の
１部を変更した実施例の説明図、第４図は同じく
装置の１部を変更した他の実施例の説明図、第５
図は台車押上手段の作動の説明図、第６図は台車
押上手段としてエアシリンダーを用いた場合の作
動説明図、第７図は押上手段としてカムを利用し
た場合の作動説明図である。１……架台、２……走行レール、３……車軸、
４……前輪、５……駆動軸、６……後輪、７……
台車、８……モーター、９……スプロケツト、１
０……チエーン、１１……上部駆動ローラー、１
２……上部仕分けローラー、１３……上部無端ベ
ルト、１４……下部駆動ローラー、１５……下部
仕分けローラー、１６……下部無端ベルト、１
７，１８……スプロケツト、１９……チエーン、
２０，２１……ギア、２２……一方クラツチ、２
３……押上手段、２４……押上棒、２５……コ
ロ、２６……ソレノイド、２７……軸、２８……
受座、３０……リミツトスイツチ、３１……端
子、５０……エアシリンダー、５１……ロツド、
６０……押上棒、６１……ボス、６２……カム、
６３……モーター、Ａ……堆積打抜刷本、Ｂ……
適正量の打抜刷本、A′……適正量抄い取り後の
残留刷本、GL……テーブルリフター、XL……ム
シリ機、GXL……ムシリ機のテーブル、Ｃ……
チエーン、Ｒ……補助ローラー、Ｓ……楔状空
間。 Fig. 1 is an external view of the machine for cutting out sheets such as punched books of the present invention, and Fig. 2 is an explanatory diagram of the operation of this machine. 3 is an explanatory diagram of an embodiment in which a part of the apparatus of the present invention is changed, FIG. 4 is an explanatory diagram of another embodiment in which a part of the apparatus is similarly changed, and 5.
FIG. 6 is an explanatory diagram of the operation of the bogie pushing means, FIG. 6 is an explanatory diagram of the operation when an air cylinder is used as the bogie pushing means, and FIG. 7 is an explanatory diagram of the operation when a cam is used as the bogie pushing means. 1... Frame, 2... Running rail, 3... Axle,
4...Front wheel, 5...Drive shaft, 6...Rear wheel, 7...
Cart, 8...Motor, 9...Sprocket, 1
0... Chain, 11... Upper drive roller, 1
2... Upper sorting roller, 13... Upper endless belt, 14... Lower drive roller, 15... Lower sorting roller, 16... Lower endless belt, 1
7, 18...Sprocket, 19...Chain,
20, 21...gear, 22...one clutch, 2
3... Push-up means, 24... Push-up bar, 25... Roller, 26... Solenoid, 27... Shaft, 28...
catch, 30... limit switch, 31... terminal, 50... air cylinder, 51... rod,
60... Push-up bar, 61... Boss, 62... Cam,
63...Motor, A...Pile punched book, B...
Proper amount of punched printed book, A'...Remaining printed book after proper amount of paper is removed, GL...Table lifter, XL...Musiri machine, GXL...Musiri machine table, C...
Chain, R...Auxiliary roller, S...Wedge-shaped space.

Claims

[Claims] 1. A running rail 2 laid on a frame 1 and an axle 3
A bogie 7 supported on the traveling rail 2 by a front wheel 4 provided on the drive shaft 5 and a rear wheel 6 provided on the drive shaft 5.
The drive shaft 5 is rotationally driven by the motor 8 provided on the cart 7, the sprocket 9 provided on the drive shaft 5, and the chain 10, and the cart 7 is rotated.
an upper endless belt 13 connected between an upper driving roller 11 and an upper sorting roller 12 provided on the truck 7; and a lower drive provided on the truck 7. A lower endless belt 16 that is symmetrical to the upper endless belt 13 stretched between the roller 14 and the lower sorting roller 15, a sprocket 17 provided on the drive shaft 5, and a sprocket 18 provided on the lower drive roller 14. The lower endless belt 16 rotates the lower driving roller 14 by the chain 19.
The lower drive roller 14 was rotated in the forward direction by a lower endless belt rotating means configured to rotate forward and backward, and a gear 20 provided on the lower drive roller 14 and a gear 21 provided in the upper drive roller 11. Sometimes,
The upper drive roller 11 is reversely rotated to reversely rotate the upper endless belt 13, and when the lower drive roller 14 is reversely rotated, the rotation of the upper drive roller 11 is stopped by a one-way clutch 22 provided on the upper drive roller 11. Upper endless belt 1
upper endless belt rotation and stopping means 23 configured to stop the rotation of the truck 3; and truck push-up means 23 configured to push up the rear part of the truck 7 and lift the rear wheel 6 from the running rail 2.
The gears 21 and 20 make the speeds of the upper endless belt 13 and the lower endless belt 16 the same, and the sprockets 17 and 18 make the speed of the truck 7 and the speeds of the upper and lower endless belts 13 and 16 the same. A device for cutting out punched books, etc., which is characterized by: 2. A punched book, etc. according to claim 1, characterized in that the upper endless belt 13 and the lower endless belt 16 symmetrical thereto are arranged in a beak-like shape by means of auxiliary rollers. Paper scraping device.