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EP0204114B1 - Protection device for printing machines - Google Patents

Protection device for printing machines Download PDF

Info

Publication number
EP0204114B1
EP0204114B1 EP86105225A EP86105225A EP0204114B1 EP 0204114 B1 EP0204114 B1 EP 0204114B1 EP 86105225 A EP86105225 A EP 86105225A EP 86105225 A EP86105225 A EP 86105225A EP 0204114 B1 EP0204114 B1 EP 0204114B1
Authority
EP
European Patent Office
Prior art keywords
protective cover
locking
locking element
pawl
gravity
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
Application number
EP86105225A
Other languages
German (de)
French (fr)
Other versions
EP0204114A3 (en
EP0204114A2 (en
Inventor
Janko Despot
Ulrich Kröber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT86105225T priority Critical patent/ATE64715T1/en
Publication of EP0204114A2 publication Critical patent/EP0204114A2/en
Publication of EP0204114A3 publication Critical patent/EP0204114A3/en
Application granted granted Critical
Publication of EP0204114B1 publication Critical patent/EP0204114B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0018—Protection means against injury to the operator
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/65—Braces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/608—Pivoted

Definitions

  • Protective covers are used on rotary printing presses to cover danger areas over a large area, especially where there are rotating machine parts that can injure the operating personnel.
  • Protective covers of this type must, however, be arranged on the printing presses so that they can be removed or folded down in order to maintain or To be able to make adjustments. For this reason, the trade association demands such protective covers and their electrical protection, which then usually only allows certain machine functions after the protective covers have been removed or folded down or stops the machine.
  • controlled mechanical locking devices are provided, the locking elements of which lock the protective covers when folded down.
  • a device of this type is known from EP-A-0 063 229.
  • the locking elements of the locking device are designed as catch pawls and associated bolts on the protective cover and arranged on one side of the printing press.
  • the disadvantage of this known locking device is that additional handles are required to control the movement of the locking elements, here the catch pawl.
  • the user-friendliness of the printing press is adversely affected, in particular when the printer is on one side of the printing press, but the catch pawl must be operated from the other side of the printing press.
  • the invention has for its object to protect the danger points of the printing unit with sheet-like protective covers in connection with an automatic mechanical locking device with a simple handle in a protective device of the type mentioned.
  • the advantages of the device according to the invention are that an increased ease of use of the printing press and at the same time an improved function of the locking device is ensured.
  • the inking unit rollers are covered over a large area with a hinged protective cover 1 in an inking unit working from top to bottom.
  • a hinged protective cover 1 in an inking unit working from top to bottom.
  • FIG. 1 only a section of this is shown with the inking unit rollers located in the vicinity of the locking device 2, 3, 4, namely inking unit 9, inking device 10 and transfer rollers 11 to 13.
  • a locking element 2 is mounted on the protective cover 1 by means of bolts 3 with play to the machine frame 6 of the rotary printing press.
  • the protective cover 1 When opening, the protective cover 1 is pivoted up to a stop pin 5 in the joint 7. Shortly before striking, the locking element 2 folds due to the greater weight on the right into a recess in a pawl 4 fastened to the machine frame 6 by means of screws 8, 14.
  • the screw bolt 3 moves from a position A into a position B according to FIG. 1. By shifting the center of gravity, the left side of the locking element 2 is now heavier than the right side.
  • the protective cover 1 is electrically secured in a known manner.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Control Of Electric Motors In General (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

A protective device for a printing press having a hinged protective cover with an automatic mechanical interlocking mechanism, which includes a fixed pawl on the press frame and a cooperating interlocking element which, by shifting its center of gravity, automatically engages in and disengages from a recess in the pawl as the cover is successively raised and lowered with respect to a latched open position.

Description

Schutzabdeckungen dienen an Rotationsdruckmaschinen zur großflächigen Abdeckung von Gefahrenstellen insbesondere dort, wo sich rotierende Maschinenteile befinden, durch die sich das Bedienungspersonal verletzten kann. Derartige Schutzabdeckungen müssen aber an den Druckmaschinen abnehmbar oder abklappbar angeordnet werden, um Wartungs-bzw. Einstellarbeiten vornehmen zu können. Deshalb fordert die Berufsgenossenschaft solche Schutzabdeckungen und deren elektrische Absicherung, die dann üblicherweise nach abgenommenen oder abgeklappten Schutzabdeckungen nur noch bestimmte Maschinenfunktionen gestattet bzw. die Maschine stillsetzt. Zur Sicherung dieser Schalt- und Bewegungsfolgen sind gesteuerte mechanische Verriegelungsvorrichtungen vorgesehen, deren Verriegelungselemente die Schutzabdeckungen im abgeklappten Zustand verriegeln.Protective covers are used on rotary printing presses to cover danger areas over a large area, especially where there are rotating machine parts that can injure the operating personnel. Protective covers of this type must, however, be arranged on the printing presses so that they can be removed or folded down in order to maintain or To be able to make adjustments. For this reason, the trade association demands such protective covers and their electrical protection, which then usually only allows certain machine functions after the protective covers have been removed or folded down or stops the machine. To secure these switching and movement sequences, controlled mechanical locking devices are provided, the locking elements of which lock the protective covers when folded down.

Eine Vorrichtung dieser Gattung ist durch die EP-A- 0 063 229 bekannt. Die Verriegelungselemente der Verriegelungsvorrichtung sind als Fangklinke und zugehörigen Bolzen an der Schutzabdeckung ausgebildet und an einer Seite der Druckmaschine angeordnet.A device of this type is known from EP-A-0 063 229. The locking elements of the locking device are designed as catch pawls and associated bolts on the protective cover and arranged on one side of the printing press.

Der Nachteil dieser bekannten Verriegelungsvorrichtung besteht darin, daß noch zusätzliche Handgriffe erforderlich sind, um die Bewegung der Verriegelungselemente, hier der Fangklinke, zu steuern. Dadurch ist die Bedienungsfreundlichkeit der Druckmaschine beeinträchtigt und zwar erheblich dann, wenn sich der Drucker an der einen Seite der Druckmaschine befindet, die Fangklinke aber von der anderen Seite der Druckmaschine bedient werden muß. Außerdem besteht die Gefahr einer Beschädigung der Verriegelungsvorrichtung beim Versuch des Schließens der Schutzabdeckung durch einen einfachen Handgriff, ohne zuvor die Verriegelung aufzuheben, wodurch die Funktion der Verriegelungsvorrichtung beeinträchtigt wird.The disadvantage of this known locking device is that additional handles are required to control the movement of the locking elements, here the catch pawl. As a result, the user-friendliness of the printing press is adversely affected, in particular when the printer is on one side of the printing press, but the catch pawl must be operated from the other side of the printing press. There is also the risk of damage to the locking device when an attempt is made to close the protective cover with a simple handle without first releasing the locking, as a result of which the functioning of the locking device is impaired.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Schutzvorrichtung eingangs genannter Art die Gefahrenstellen des Druckwerkes durch flächenförmige Schutzabdeckungen in Verbindung mit einer selbsttätigen mechanischen Verriegelungsvorrichtung mit einfachem Handgriff abzusichern.The invention has for its object to protect the danger points of the printing unit with sheet-like protective covers in connection with an automatic mechanical locking device with a simple handle in a protective device of the type mentioned.

Gelöst wird diese Aufgabe durch eine Vorrichtung entsprechend dem Kennzeichen des ersten Patentanspruches. Weiterbildungen ergeben sich aus dem Unteranspruch.This object is achieved by a device according to the characterizing part of the first claim. Further developments result from the subclaim.

Die Vorteile der erfindungsgemäßen Vorrichtung bestehen darin, daß eine erhöhte Bedienungsfreundlichkeit der Druckmaschine und zugleich eine verbesserte Funktion der Verriegelungsvorrichtung gewährleistet ist.The advantages of the device according to the invention are that an increased ease of use of the printing press and at the same time an improved function of the locking device is ensured.

An einem Ausführungsbeispiel ist die Erfindung nachfolgend beschrieben und anhand der Zeichnung näher erläutert.

Die Fig. 1 zeigt
die Lage der Schutzabdeckung zu Farbwerkwalzen eines Farbwerkes einschließlich der erfindungsgemäßen Verriegelungsvorrichtung,
Fig. 2 zeigt
die erfindungsgemäße Verriegelungsvorrichtung im Schnitt.
In one embodiment, the invention is described below and explained in more detail with reference to the drawing.
1 shows
the position of the protective cover relative to the inking unit rollers of an inking unit including the locking device according to the invention,
Fig. 2 shows
the locking device according to the invention in section.

An einer Rotationsdruckmaschine sind bei einem von oben nach unten arbeitenden Farbwerk die Farbwerkwalzen mit einer abklappbaren Schutzabdeckung 1 großflächig abgedeckt. In der Fig. 1 ist hiervon nur ein Ausschnitt mit den in der Nähe der Verriegelungsvorrichtung 2, 3, 4 befindlichen Farbwerkwalzen, nämlich Farbduktor 9, Farbheber 10 und Übertragungswalzen 11 bis 13 dargestellt.On a rotary printing press, the inking unit rollers are covered over a large area with a hinged protective cover 1 in an inking unit working from top to bottom. In FIG. 1, only a section of this is shown with the inking unit rollers located in the vicinity of the locking device 2, 3, 4, namely inking unit 9, inking device 10 and transfer rollers 11 to 13.

Gemäß Fig. 1 und 2 ist an der Schutzabdeckung 1 ein Verriegelungselement 2 mittels Schraubbolzen 3 mit Spiel zum Maschinengestell 6 der Rotationsdruckmaschine gelagert. Beim Öffnen wird die Schutzabdeckung 1 bis zu einem Anschlagstift 5 im Gelenk 7 verschwenkt. Kurz vor dem Anschlagen klappt das Verriegelungselement 2 wegen des größeren Gewichtes auf der rechten Seite in eine Aussparung einer am Maschinengestell 6 mittels Schrauben 8, 14 befestigten Klinke 4. Beim Zurücklassen der Schutzabdeckung 1 in eine geöffnete Endstellung geht der Schraubbolzen 3 von einer Position A in eine Position B gemäß Fig. 1. Durch diese Schwerpunktverlagerung ist die linke Seite des Verriegelungselementes 2 jetzt schwerer als die rechte Seite. Bei kurzem Anheben der Schutzabdeckung 1 wird das Verriegelungselement 2 aus der Aussparung der Klinke 4 gezogen und klappt wegen der vorangegangenen Schwerpunktverlagerung nach links und die Schutzabdeckung 1 läßt sich schließen. Dabei wird das Verriegelungselement 2 über die Klinke 4 geschleift und zwangsläufig in die Position A gebracht, wodruch der Ausgangszustand erreicht ist. Auf diese Weise wird die Bedienung der Schutzvorrichtung mit einfachem Handgriff von beliebiger Seite der Druckmaschine aus ermöglicht.1 and 2, a locking element 2 is mounted on the protective cover 1 by means of bolts 3 with play to the machine frame 6 of the rotary printing press. When opening, the protective cover 1 is pivoted up to a stop pin 5 in the joint 7. Shortly before striking, the locking element 2 folds due to the greater weight on the right into a recess in a pawl 4 fastened to the machine frame 6 by means of screws 8, 14. When the protective cover 1 is left in an open end position, the screw bolt 3 moves from a position A into a position B according to FIG. 1. By shifting the center of gravity, the left side of the locking element 2 is now heavier than the right side. When the protective cover 1 is lifted briefly, the locking element 2 is pulled out of the recess in the pawl 4 and, due to the previous shift in the center of gravity, folds to the left and the protective cover 1 can be closed. The locking element 2 is dragged over the pawl 4 and inevitably brought into position A, whereby the initial state is reached. In this way, the protection device can be operated with a simple handle from any side of the printing press.

Zur Sicherung des Bedienungspersonals ist die Schutzabdeckung 1 in bekannter Weise elektrisch abgesichert.To secure the operating personnel, the protective cover 1 is electrically secured in a known manner.

BezugszeichenlisteReference symbol list

11
SchutzabdeckungProtective cover
22nd
VerriegelungselementLocking element
33rd
SchraubbolzenBolts
44th
Klinkepawl
55
AnschlagstiftStop pin
66
MaschinengestellMachine frame
77
Gelenkjoint
88th
Schraubescrew
99
FarbduktorColor ductor
1010th
FarbheberColor lifter
1111
ÜbertragungswalzeTransfer roller
1212
""
1313
""
1414
Schraubescrew

Claims (2)

  1. Protection device on rotary printing presses with plate-like protective covers (1) which cover danger zones of the print unit, can be lifted up for adjustment and maintenance work and is thereby arranged to influence electrical safety devices, in which a mechanical locking device (2, 4) is provided which has controlled locking elements in the form of pawl and counterpart, characterised in that the mechanical locking device (2 to 4) has a fixed pawl (4) on the press frame (6) and as counterpart a locking element (2) arranged swingably on a pin (3) on the protective cover (1), wherein the locking element (2) contains two cutouts (A, B), hung up on which the locking element (2) can take up in each case by shifting of its centre of gravity a stable position locking or not locking the protective cover, wherein the position of the locking element (2) depending upon the angular position of the protective cover (1) automatically adjusts itself by displacement of the centre of gravity.
  2. Protection device according to Claim 1, characterised in that the locking element (2) can be engaged in and out by means of threaded bolts (3) provided on the protective cover (1) with displacement of the centre of gravity of its body in such a fashion that the threaded bolts (3) arranged in a first position (A, Fig. 1) in the locking element (2) on pulling back the protective cover (1) previously lifted up to a stop post (5) into an opened end position can be displaced towards a second position (B, Fig. 1) and on briefly lifting the protective cover (1) can be displaced back again towards the first position (A, Fig. 1) by positive guidance in the cutout of the fixed position pawl (4).
EP86105225A 1985-06-01 1986-04-16 Protection device for printing machines Expired - Lifetime EP0204114B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86105225T ATE64715T1 (en) 1985-06-01 1986-04-16 PROTECTIVE DEVICE ON ROTARY PRESSES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3519648A DE3519648C1 (en) 1985-06-01 1985-06-01 Protection device on rotary printing machines
DE3519648 1985-06-01

Publications (3)

Publication Number Publication Date
EP0204114A2 EP0204114A2 (en) 1986-12-10
EP0204114A3 EP0204114A3 (en) 1988-07-27
EP0204114B1 true EP0204114B1 (en) 1991-06-26

Family

ID=6272168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105225A Expired - Lifetime EP0204114B1 (en) 1985-06-01 1986-04-16 Protection device for printing machines

Country Status (5)

Country Link
US (1) US4854233A (en)
EP (1) EP0204114B1 (en)
JP (1) JPS6242844A (en)
AT (1) ATE64715T1 (en)
DE (1) DE3519648C1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306591A1 (en) * 1987-09-09 1989-03-15 MANNESMANN Aktiengesellschaft Shaft fastening device in office machines particularly in printers
DE3930364A1 (en) * 1989-09-12 1991-03-21 Heidelberger Druckmasch Ag PROTECTIVE DEVICE FOR OFFSET ROTARY PRINTING MACHINES
US5161461A (en) * 1990-09-10 1992-11-10 Purvis Sandy A Visually functional safety covering device
US5368409A (en) * 1992-09-24 1994-11-29 Pitney Bowes Inc. Latching mechanism with independent biased latching members
DE4417054B4 (en) * 1994-05-14 2007-01-11 Heidelberger Druckmaschinen Ag Pressing device in the printing unit of a printing press
DE29505373U1 (en) * 1995-03-30 1995-05-18 MAN Roland Druckmaschinen AG, 63075 Offenbach Protection device on a sheet-fed printing machine
US5655798A (en) * 1995-05-10 1997-08-12 Caterpillar Inc. Door hold-open latch release and method
JP4540179B2 (en) * 2000-05-17 2010-09-08 株式会社小森コーポレーション Printer
JP2002012084A (en) * 2000-07-03 2002-01-15 Nifco Inc Cover body opening/closing support mechanism
US6564511B2 (en) 2001-08-31 2003-05-20 Frederick L. Toth Door locking mechanism and method therefor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221528A (en) * 1915-05-26 1917-04-03 John F Golding Door-holder.
US2327672A (en) * 1941-04-16 1943-08-24 Gen Motors Corp Refrigerating apparatus
US2527278A (en) * 1946-08-01 1950-10-24 Raymond W Schemansky Window stop
DE1046072B (en) * 1952-11-04 1958-12-11 Rotaprint Ltd Protective device on the printing cylinders of a rotary printing press
FR2218014A5 (en) * 1973-02-12 1974-09-06 Calor Sa
US3959859A (en) * 1974-09-23 1976-06-01 Batesville Casket Company Casket cap brace
JPS5529497Y2 (en) * 1977-04-07 1980-07-14
DE3115475A1 (en) * 1981-04-16 1982-11-04 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach PROTECTIVE DEVICE ON ROTARY PRINTING MACHINES
DE3402065C1 (en) * 1984-01-21 1985-04-18 Deere & Co., Moline, Ill., US, Niederlassung Deere & Co. European Office, 6800 Mannheim Protective device to prevent contact with at least one rotating part

Also Published As

Publication number Publication date
DE3519648C1 (en) 1986-11-06
US4854233A (en) 1989-08-08
EP0204114A3 (en) 1988-07-27
ATE64715T1 (en) 1991-07-15
JPS6242844A (en) 1987-02-24
EP0204114A2 (en) 1986-12-10
JPH0414877B2 (en) 1992-03-16

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