EP0703075A2 - Cylindre à pinces - Google Patents
Cylindre à pinces Download PDFInfo
- Publication number
- EP0703075A2 EP0703075A2 EP95114284A EP95114284A EP0703075A2 EP 0703075 A2 EP0703075 A2 EP 0703075A2 EP 95114284 A EP95114284 A EP 95114284A EP 95114284 A EP95114284 A EP 95114284A EP 0703075 A2 EP0703075 A2 EP 0703075A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- gripper
- cylinder
- gripper cylinder
- armature
- stator
- 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.)
- Granted
Links
Images
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
Definitions
- the invention relates to a gripper cylinder according to the preamble of patent claim 1.
- Gripper cylinders are used in sheet-fed printing machines, for example as printing cylinders, which have to be equipped with a gripper, in particular a row of grippers, in order to hold a sheet.
- the grippers of the series of grippers take the sheet from, for example, a feed drum or directly from a sheet feed table and, after the sheet has been printed, transfer it to a transfer drum via a diversion tongue.
- a transfer drum also represents a gripper cylinder in the sense of the preamble.
- Gripper cylinders also occur in folding units.
- control cams form either an inner or an outer curve against which a cam roller is pressed by the bias generated by a spring.
- the outside and inside curves thus serve to force the cam roller.
- a gripper closing device for the gripper cylinder of a printing press in which an electromagnet arranged within the gripper cylinder, which is controlled via a fixed contact disk, moves an armature arranged on the gripper shaft when a current flows in the electromagnet and thereby inducing a magnetic field in the armature.
- DE-AS 21 13 750 shows a gripper cylinder with a gripper, the movement of which is controlled in both directions by electromagnets arranged inside the gripper cylinder. Both electromagnets are supplied with current through a slip ring disk, which is arranged outside the gripper cylinder.
- the electromagnet is arranged stationary outside the gripper cylinder.
- the magnetic induction in the armature generated by him when a current flows can be easily controlled without using sliding contacts, since the electromagnet does not rotate with the gripper cylinder.
- a simple control mechanism is created which, if the gripper movement is not synchronized with the number of revolutions of the gripper cylinder or if the gripper only moves every nth revolution of the gripper cylinder, represents a considerable simplification of the mechanical structure .
- the cam track does not have to be repeated with every revolution of the gripper cylinder, even though there is only one control cam, i.e. any clock control can be implemented.
- the corresponding springs and the cam roller required for this are saved.
- the control cam which is electrically controllable according to the invention is at the same time a component of the electromagnet.
- the invention is characterized by small dimensions.
- a gripper cylinder 1 (FIG. 1) is rotatably mounted in a printing machine via its shaft 2. It has a gripper spindle 3 which comprises a plurality of individual grippers 4 which Clamp printed copies or sheets against a gripper pad 5.
- the gripper pad 5 is fastened by a screw 6 in the cylinder body of the gripper cylinder 2.
- the gripper 4 is pivotally mounted about a pivot point 7.
- a compression spring 8 fastened on the one hand to the gripper 4 and on the other hand to the cylinder body of the gripper cylinder 2 presses a lower edge 40 of the gripper 4 onto an upper edge 50 of the gripper support 5 in order to hold the end of a sheet.
- the device 3 is shown in the open state.
- a cam roller 10 rotatably mounted on the gripper spindle 3 about a pivot point 100 can be pivoted.
- the gripper spindle 3 remains pivoted by the compression spring 8 about the pivot point 7 to the shaft 2 of the gripper cylinder 1 and the grippers 4 are thus clamped held.
- the stator 12 (FIG. 3), which is essentially designed as an arc section, is present.
- a projecting lip 130 of a housing 13 of the stator 12 forms an outer curve for the cam roller 10 in the area 11.
- the armature 9 and thus also the magnet 9 is magnetized
- Cam roller 10 is attracted in the area 11 by the lip 130 and thus pressed against the outer curve formed by it.
- Both the armature 9 and the housing 13 are made of a magnetizable, non-permanent magnetic material.
- the gripper device 3 When the gripper device 3 is open at point A, for example, it picks up an arc from a contact drum there and rotates it further in the direction of an arrow C into an area 14 (indicated by dots) in which the stator 12 is not present and in which therefore the gripper 4 is closed again by the restoring torque of the compression spring 8.
- stator 12 is designed as a concentric ring surrounding the end of the gripper cylinder 1 and accordingly the lip 130 is present in the regions 11 and 14, the cam roller is in the region 14, even if current flows through the stator 12 is forcibly pivoted in the direction of the shaft 2 and holds the bow there until it reaches area 11 again.
- the gripper cylinder 1 (FIG. 3) is mounted between side walls 16 and 17 via double ball bearings 15.
- the invention provides a gripper cylinder 1 which can be used either as a printing cylinder of a sheet-fed printing machine, as a lay-on or transfer drum in a sheet-fed printing machine or as a gripper cylinder of a folding unit.
- a mechanical curve control of its gripper 4 it is pivoted via a magnetizable, non-permanently magnetic armature 9, which can be pivoted together with a cam roller 10, if an electric current flows through a stator 12, this magnetizes a housing 13 of the stator 12 and thereby attracts the armature 9 in the direction of the housing 13 against the restoring torque of the compression spring 8.
- stator 12 is designed as a ring between the shaft 2 and the cam roller 10, the stator 12 being surrounded by a housing corresponding to the housing 13 in FIGS. 2, 3.
- gripper spindle 3 which has a plurality of grippers 4
- a permanent magnet or another electromagnet (FIGS. 4a, b) with a stator 12 ', a housing 12' and a housing lip 130 'can be pivoted back and forth (arrow D), depending on which of the two Electromagnets a current flows or the stronger current flows, which exerts the greater torque on the armature 90 and pivots the gripper spindle 3 with it.
- the gripper support 5 forms a stop for the grippers 4 and thus also for the armature 90.
- Another stop for the armature is formed, for example, by a bolt attached to the end face of the gripper cylinder 1; In this case, neither a cam nor a cam roller are necessary.
- the electromagnets can be stationary on one end face or on both end faces (FIG. 3) of the gripper cylinder. Even in the case of a single electromagnet, which acts on the armature 9 or 90 with a torque counter to the torque generated by the compression spring 8 or a permanent magnet, the latter is arranged in a stationary manner.
- the electromagnets can be controlled independently of the movement of the gripper cylinder 1, for example by an encoder. Equivalent to magnetic attraction, the magnetic repulsion of magnets or electromagnets facing each other with the same poles can also be used.
Landscapes
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4433380 | 1994-09-20 | ||
| DE4433380A DE4433380A1 (de) | 1994-09-20 | 1994-09-20 | Greiferzylinder |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0703075A2 true EP0703075A2 (fr) | 1996-03-27 |
| EP0703075A3 EP0703075A3 (fr) | 1996-12-27 |
| EP0703075B1 EP0703075B1 (fr) | 1998-12-09 |
Family
ID=6528615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95114284A Expired - Lifetime EP0703075B1 (fr) | 1994-09-20 | 1995-09-12 | Cylindre à pinces |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5678486A (fr) |
| EP (1) | EP0703075B1 (fr) |
| JP (1) | JP2865597B2 (fr) |
| CA (1) | CA2158592C (fr) |
| DE (2) | DE4433380A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042290A1 (fr) * | 1998-02-23 | 1999-08-26 | Indigo N.V. | Dispositifs de prehension de feuilles |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3196667B2 (ja) * | 1996-10-31 | 2001-08-06 | アキヤマ印刷機製造株式会社 | 枚葉印刷機における紙搬送用胴の爪開閉機構 |
| US6684774B2 (en) | 1997-05-09 | 2004-02-03 | Heidelberger Druckmaschinen Ag | Sheet-fed rotary printing press |
| DE19719624C1 (de) * | 1997-05-09 | 1998-06-10 | Heidelberger Druckmasch Ag | Bogenrotationsdruckmaschine |
| US6729235B2 (en) | 2001-04-30 | 2004-05-04 | Eastman Kodak Company | Imaging apparatus and imaging drum having material clamp |
| DE102007005016A1 (de) * | 2006-02-27 | 2007-08-30 | Heidelberger Druckmaschinen Ag | Vorrichtung zum Transport von Bogen mittels einer Greifereinrichtung |
| DE102006025789A1 (de) * | 2006-06-02 | 2007-12-13 | Man Roland Druckmaschinen Ag | Bogendruckmaschine |
| DE102006025787A1 (de) * | 2006-06-02 | 2007-12-13 | Man Roland Druckmaschinen Ag | Bogendruckmaschine |
| CN101663558B (zh) | 2007-04-05 | 2011-06-22 | 富士通半导体股份有限公司 | 表面形状传感器及其制造方法 |
| US9656487B2 (en) | 2015-10-13 | 2017-05-23 | Intermec Technologies Corporation | Magnetic media holder for printer |
| US10460877B2 (en) | 2016-05-27 | 2019-10-29 | Tdk Corporation | Thin-film capacitor including groove portions |
| DE102017201722B4 (de) * | 2017-02-03 | 2020-02-27 | Koenig & Bauer Ag | Fördereinrichtung für flächiges Fördergut |
| CN108942993B (zh) * | 2018-10-17 | 2024-03-22 | 安徽理工大学 | 一种机械控制式自动下料机械手 |
| WO2020099976A1 (fr) | 2018-11-18 | 2020-05-22 | Landa Corporation Ltd. | Amélioration de la sortie imprimée de systèmes d'impression numérique par réduction des marges non imprimées du substrat |
| GB2582334B (en) | 2019-03-19 | 2022-02-23 | Landa Labs 2012 Ltd | Condensation curable coating composition comprising polydimethylsiloxane-silanol and silicone resin-silanol and use thereof |
| GB2582333B (en) * | 2019-03-19 | 2021-08-18 | Landa Labs 2012 Ltd | Arrangements for securing cylinder jackets |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE259237C (fr) | ||||
| DE2113750A1 (de) | 1970-04-01 | 1971-10-21 | Polygraph Leipzig | Vorrichtung zum Erfassen von bogenfoermigem Material |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CS156913B1 (fr) * | 1972-05-15 | 1974-08-23 | ||
| US3768406A (en) * | 1972-07-03 | 1973-10-30 | Polygraph Leipzig | Sheet gripper |
| JPS5661255A (en) * | 1979-10-24 | 1981-05-26 | Ricoh Co Ltd | Winder of paper web |
| DE3112964A1 (de) * | 1981-04-01 | 1982-10-21 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg | "bogenuebertragungszylinder von bogenrotationsdruckmaschinen mit einer einrichtung zur passerkorrektur der aufdrucke" |
| US4634113A (en) * | 1984-11-22 | 1987-01-06 | Sharp Kabushiki Kaisha | Sheet winding and discharging device |
| DE3936345C1 (fr) * | 1989-11-02 | 1991-03-07 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | |
| DE4200406C2 (de) * | 1992-01-10 | 1996-10-10 | Heidelberger Druckmasch Ag | Greifereinrichtung an bogenverarbeitenden Rotationsdruckmaschinen |
-
1994
- 1994-09-20 DE DE4433380A patent/DE4433380A1/de not_active Withdrawn
-
1995
- 1995-09-12 EP EP95114284A patent/EP0703075B1/fr not_active Expired - Lifetime
- 1995-09-12 DE DE59504477T patent/DE59504477D1/de not_active Expired - Lifetime
- 1995-09-13 JP JP7235640A patent/JP2865597B2/ja not_active Expired - Fee Related
- 1995-09-19 CA CA002158592A patent/CA2158592C/fr not_active Expired - Fee Related
-
1996
- 1996-12-10 US US08/761,331 patent/US5678486A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE259237C (fr) | ||||
| DE2113750A1 (de) | 1970-04-01 | 1971-10-21 | Polygraph Leipzig | Vorrichtung zum Erfassen von bogenfoermigem Material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999042290A1 (fr) * | 1998-02-23 | 1999-08-26 | Indigo N.V. | Dispositifs de prehension de feuilles |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2158592C (fr) | 2000-09-05 |
| CA2158592A1 (fr) | 1996-03-21 |
| EP0703075B1 (fr) | 1998-12-09 |
| JPH08103992A (ja) | 1996-04-23 |
| DE59504477D1 (de) | 1999-01-21 |
| JP2865597B2 (ja) | 1999-03-08 |
| US5678486A (en) | 1997-10-21 |
| EP0703075A3 (fr) | 1996-12-27 |
| DE4433380A1 (de) | 1996-03-21 |
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