JPH0711974Y2 - Gripper for printing press - Google Patents
Gripper for printing pressInfo
- Publication number
- JPH0711974Y2 JPH0711974Y2 JP1993058599U JP5859993U JPH0711974Y2 JP H0711974 Y2 JPH0711974 Y2 JP H0711974Y2 JP 1993058599 U JP1993058599 U JP 1993058599U JP 5859993 U JP5859993 U JP 5859993U JP H0711974 Y2 JPH0711974 Y2 JP H0711974Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- grippers
- gripper
- printing
- front edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F21/00—Devices for conveying sheets through printing apparatus or machines
- B41F21/10—Combinations of transfer drums and grippers
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本考案は、印刷機の印刷区域を通
って枚葉紙を、その枚葉紙の前方縁で搬送するためのく
わえ装置であって、互いに間隔を置いて配置された複数
のくわえづめと、枚葉紙引渡し時に対抗くわえづめに接
近するためのくわえづめ相互間の中間スペースとを有し
ている形式のものに関する。FIELD OF THE INVENTION The present invention is a gripping device for transporting a sheet through a printing zone of a printing press at the front edge of the sheet and spaced from one another. The present invention relates to a type having a plurality of grippers and an intermediate space between the grippers for approaching the opposing grippers at the time of sheet delivery.
【０００２】[0002]
【従来の技術】前述の形式のくわえ装置は、ドイツ連邦
共和国特許第２５４０２１８号明細書によって公知であ
る。くわえ装置の働きは、自動給紙機によって送り出さ
れた枚葉紙を印刷機を通って搬送させることであり、こ
の場合枚葉紙を互いに引渡す複数のくわえ装置が協働す
る。しかも、複数のくわえ装置による枚葉紙の正しいか
つ精確な搬送は、良好な印刷性能を得るための前提であ
る。A gripping device of the type mentioned above is known from DE 2540218. The function of the gripper device is to transport the sheets delivered by the automatic feeder through the printing machine, in which case a plurality of gripper devices delivering the sheets to one another cooperate. Moreover, the correct and accurate transport of sheets by a plurality of gripping devices is a prerequisite for obtaining good printing performance.
【０００３】圧胴のくわえ装置が特に重要である。印刷
中に、くわえ装置のくわえづめが枚葉紙を版胴のそばに
引張り、この際、インキング及び圧着力によって枚葉紙
に引張力が作用する。くわえづめ相互の間隔によって、
前記の引張力はくわえづめのくわえ個所では枚葉紙を強
く締付けることになり、これに対してくわえづめ相互間
の中間スペースでは明らかに締付けの減少が見られる。
このような場所毎の締付け差は、くわえづめ間隔が種々
異なる公知のくわえ装置においては益々増大され、従っ
て特に、比較的薄い被印刷材の場合には枚葉紙が変形さ
れ、この枚葉紙の変形により、ダブリが発生されかつ印
刷性能が著しく低下される。The gripping device of the impression cylinder is of particular importance. During printing, the gripper of the gripper pulls the sheet beside the plate cylinder, with inking and crimping forces exerting a tensile force on the sheet. Depending on the distance between the grippers,
The pulling forces result in a strong clamping of the sheets at the gripping points of the grippers, whereas a clear reduction of clamping is seen in the intermediate space between the grippers.
The tightening difference from place to place is increased more and more in known gripping devices with different gripping intervals, so that the sheet is deformed, especially in the case of relatively thin printing materials, Due to the deformation, doublet is generated and the printing performance is significantly deteriorated.
【０００４】[0004]
【考案が解決しようとする課題】本考案の課題は、高い
印刷性能を保証し、かつダブリを排除する冒頭の形式の
くわえ装置を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a gripper device of the initial type which guarantees high printing performance and eliminates double marks.
【０００５】[0005]
【課題を解決するための手段】前述の課題を解決するた
めに講じた本考案の手段は、くわえづめの占領部分が枚
葉紙前方縁の少なくとも４０％であり、さらに枚葉紙を
印刷区域を通過させる際にくわえづめのくわえ個所にお
ける枚葉紙の伸びの差が０．３％の伸びを上回らないよ
うに、個々のくわえづめの間隔相互間の差を僅かにする
ことにある。Means for Solving the Problems In the means for solving the above-mentioned problems, the means of the present invention is such that the occupying portion of the gripper is at least 40% of the front edge of the sheet, and the sheet is printed in the printing area. The difference between the individual gripper intervals is to be small so that the difference in the elongation of the sheets at the gripper points of the gripper does not exceed 0.3% when passing.
【０００６】[0006]
【作用】締付けの原因となる枚葉紙における伸びの差を
僅かにして、ダブリがもはや発生しないようにする。く
わえづめの間隔を決定する基礎となるものは、印刷機に
よって印刷しようとする最も薄い、又は最も軟らかい被
印刷材である。The difference in elongation between the sheets, which causes tightening, is reduced so that doubles no longer occur. The basis for determining the gripper spacing is the thinnest or softest substrate to be printed by the printing press.
【０００７】[0007]
【考案の効果】本考案によって得られる利点は、負荷を
均等に分配することによって片寄った締付けが排除さ
れ、さらに枚葉紙毎に生じる被印刷材の強さの変動に左
右されないことである。The advantage of the present invention is that the load is evenly distributed to eliminate the biased tightening, and further, it is not affected by the variation of the strength of the printing material occurring for each sheet.
【０００８】くわえづめ間隔相互間の差を本考案のよう
に減少させることによって可能である高い占領部分によ
って、印刷時の枚葉紙への応力が減少され、このことに
よってやはり印刷性能が改善される。The high occupation area, which is possible by reducing the difference between the gripping intervals as in the present invention, reduces the stress on the sheet during printing, which also improves the printing performance. It
【０００９】公知のくわえ装置の場合には、ダブリはし
ばしば次のことによっても発生する。つまり、枚葉紙の
角隅が外側のくわえづめを越えて突出し、それ故、強く
たるむ傾向があるということによってである。このよう
な影響を取り除くために、本考案の有利な実施態様によ
れば、外側のくわえづめが、枚葉紙の角隅をその都度保
持することができるだけ圧胴軸線の方向で移動可能であ
るようにする。さらに、くわえづめ間隔を要求される限
度に維持するために、有利には外側の複数のくわえづめ
を移動可能にすることもできる。In the known gripping device, doublet is also often caused by: This is because the corners of the sheet project beyond the outer gripper and therefore tend to sag strongly. In order to eliminate such effects, according to an advantageous embodiment of the invention, the outer gripper is movable in the direction of the impression cylinder axis as much as possible to hold the corners of the sheet in each case. To do so. Furthermore, in order to maintain the gripper spacings to the required limit, it is also possible for the outer grippers to be movable.
【００１０】[0010]
【実施例】図１は枚葉紙１の区分を示しており、この枚
葉紙の前方縁２を圧胴のくわえづめ３，３ａがつかむ。
くわえづめ３，３ａは互いに等間隔で配置されており、
しかもくわえ個所の占領部分は枚葉紙の前方縁の４３％
になる。この値は、枚葉紙の締付けが小さくてすみ、か
つくわえづめ及び対抗くわえづめの構造のために十分な
スペースが存在するので、特に望ましい値であることが
判る。1 shows a section of a sheet of paper 1, the front edge 2 of which is gripped by the grippers 3, 3a of the impression cylinder.
The grippers 3 and 3a are arranged at equal intervals,
Moreover, the occupied area of the gripper is 43% of the front edge of the sheet.
become. This value proves to be a particularly desirable value, since it requires only a small clamping of the sheet and there is sufficient space for the gripping and counter-gripping structures.
【００１１】均等なインキング及び均等な圧着力の場合
に、前述の装置においてくわえづめ３にほぼ同じ引張力
Ｐが与えられる。これに相応して、くわえづめ相互間の
中間スペースにおける枚葉紙のたるみｆもほぼ同じであ
り、従って印刷動作を邪魔する枚葉紙変形は生ぜしめら
れない。くわえづめ３ａは、枚葉紙１の角隅４に設けら
れており、従って枚葉紙縁部のたるみを排除する。With equal inking and equal crimping forces, approximately the same pulling force P is applied to the gripper 3 in the device described above. Correspondingly, the slack f of the sheet in the intermediate space between the grippers is also approximately the same, so that no sheet deformation that disturbs the printing operation occurs. The gripper 3a is provided at the corner 4 of the sheet 1 and therefore eliminates slack at the edges of the sheet.
【００１２】本考案によるくわえ装置は、特に、枚葉紙
オフセット輪転印刷機用の圧胴に使用するために設けら
れている。しかし、渡し機構、紙取り胴及び付加機構の
ような別の枚葉紙送り機構にも使用することができる。The gripper device according to the invention is provided in particular for use in an impression cylinder for a sheet-fed rotary printing press. However, it can also be used in other sheet-feeding mechanisms such as transfer mechanisms, take-up cylinders and additional mechanisms.
【図１】本考案によるくわえ装置の概略図である。FIG. 1 is a schematic view of a gripping device according to the present invention.
１ 枚葉紙、 ２ 前方縁、 ３・３ａ くわえづめ、
４ 角隅1 sheet, 2 front edge, 3.3a gripper,
4 corners
Claims (2)
の枚葉紙の前方縁で搬送するためのくわえ装置であっ
て、互いに間隔を置いて配置された複数のくわえづめ
と、枚葉紙引渡し時に対抗くわえづめに接近するための
くわえづめ相互間の中間スペースとを有している形式の
ものにおいて、くわえづめの占領部分が枚葉紙前方縁の
少なくとも４０％であり、さらに枚葉紙を印刷区域を通
過させる際にくわえづめのくわえ個所における枚葉紙
（１）の伸びの差が０．３％の伸びを上回らないよう
に、個々のくわえづめ（３，３ａ）の間隔相互間の差を
僅かにすることを特徴とする印刷機用のくわえ装置。1. A gripping device for transporting a sheet through a printing zone of a printing press at a front edge of the sheet, the grippers being spaced apart from one another. In the type having a middle space between the grippers for approaching the opposing grippers at the time of sheet delivery, the occupied part of the grippers is at least 40% of the front edge of the sheet, and The spacing between the individual grippers (3, 3a) should be such that the difference in elongation of the sheets (1) at the gripping points of the gripper does not exceed 0.3% when the paper passes through the printing area. A gripping device for a printing press, characterized in that the difference between them is small.
が異なる場合にもその都度枚葉紙（１）の角隅（４）を
保持するだけ圧胴軸線の方向で移動可能である請求項１
記載のくわえ装置。2. The outer gripper (3a) is movable in the direction of the impression cylinder axis only by holding the corners (4) of the sheet (1) in each case even if the sheet width is different. Claim 1
The gripper described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843420177 DE3420177A1 (en) | 1984-05-30 | 1984-05-30 | GRIPPER DEVICE FOR A PRINTING MACHINE |
| DE3420177.7 | 1984-05-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0645734U JPH0645734U (en) | 1994-06-21 |
| JPH0711974Y2 true JPH0711974Y2 (en) | 1995-03-22 |
Family
ID=6237226
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60115549A Pending JPS60260338A (en) | 1984-05-30 | 1985-05-30 | Gripper for printer |
| JP1993058599U Expired - Lifetime JPH0711974Y2 (en) | 1984-05-30 | 1993-10-29 | Gripper for printing press |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60115549A Pending JPS60260338A (en) | 1984-05-30 | 1985-05-30 | Gripper for printer |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0163021B1 (en) |
| JP (2) | JPS60260338A (en) |
| AT (1) | ATE43293T1 (en) |
| DE (1) | DE3420177A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB577222A (en) * | 1943-02-18 | 1946-05-09 | Goss Printing Press Co Ltd | Improvements in or relating to printing press gripper mechanisms |
| JPS555225B2 (en) * | 1974-02-15 | 1980-02-05 | ||
| DE2540218A1 (en) * | 1975-09-10 | 1977-03-24 | Heidelberger Druckmasch Ag | GRIPPERS FOR PRINTING MACHINES |
| DD125113A1 (en) * | 1976-02-03 | 1977-04-06 | ||
| DE2924636C2 (en) * | 1979-06-19 | 1985-01-31 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Sheet gripper device for impression cylinders and transfer drums of sheet-fed rotary printing machines |
-
1984
- 1984-05-30 DE DE19843420177 patent/DE3420177A1/en not_active Ceased
-
1985
- 1985-03-13 AT AT85102872T patent/ATE43293T1/en active
- 1985-03-13 EP EP85102872A patent/EP0163021B1/en not_active Expired
- 1985-05-30 JP JP60115549A patent/JPS60260338A/en active Pending
-
1993
- 1993-10-29 JP JP1993058599U patent/JPH0711974Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645734U (en) | 1994-06-21 |
| EP0163021B1 (en) | 1989-05-24 |
| DE3420177A1 (en) | 1985-12-05 |
| EP0163021A2 (en) | 1985-12-04 |
| JPS60260338A (en) | 1985-12-23 |
| ATE43293T1 (en) | 1989-06-15 |
| EP0163021A3 (en) | 1987-05-06 |
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