EP0391246B1 - Papierfangvorrichtung - Google Patents

Papierfangvorrichtung Download PDF

Info

Publication number
EP0391246B1
EP0391246B1 EP90105974A EP90105974A EP0391246B1 EP 0391246 B1 EP0391246 B1 EP 0391246B1 EP 90105974 A EP90105974 A EP 90105974A EP 90105974 A EP90105974 A EP 90105974A EP 0391246 B1 EP0391246 B1 EP 0391246B1
Authority
EP
European Patent Office
Prior art keywords
web
ring
spindle
pawls
tear
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
EP90105974A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0391246A2 (de
EP0391246A3 (de
Inventor
Theo Keilhau
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
Publication of EP0391246A2 publication Critical patent/EP0391246A2/de
Publication of EP0391246A3 publication Critical patent/EP0391246A3/de
Application granted granted Critical
Publication of EP0391246B1 publication Critical patent/EP0391246B1/de
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
    • B41F33/18—Web break detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/20—Safety devices preventing damage

Definitions

  • the invention relates to a device for preventing printing unit damage in the case of web breaks in web-fed rotary printing presses, in particular offset web-fed rotary printing presses, with a rotating roller which detects the web in the event of a web break and which can be adjusted on and / or against which a further rotating roller is operated, with the web being in contact with one another during operation can be passed through both rollers.
  • the present invention is based on the object of developing the generic device in such a way that an increased triggering acceleration of the elements required for the catching process of the torn web is achieved, the centrifugal force occurring to support the setting process or the spring action.
  • two paper catch rollers are preferably used in the context of the present invention, one of which can be arranged in a stationary manner, while the other can be adjusted elastically, preferably under spring force, so that the trouble-free operation between the rollers is preferably non-contact carried out print carrier web clamped, ie is detected. Since the present invention essentially relates to the change in the diameter of at least one roller 1 used as a paper capture roller, only the mechanism required for this diameter change was shown in FIGS. 1 and 2.
  • the two only partially shown capture rollers according to the prior art are mounted in two side walls, not shown, of the printing press or a separate frame, and the device according to the invention is activated or activated when a signal occurs as a result of a web break, which, for example, according to DE Patent specification 21 56 506 is generated, after which the control of an electromagnet triggering the catching process or another power cylinder, such as a pneumatic or hydraulic cylinder, takes place.
  • At least one of the paper capture rollers is equipped with the device according to the invention for increasing the diameter of the jacket of roller 1.
  • This device is partially shown in section in Fig. 1 on the right part of the roller 1.
  • the jacket of the roller 1 consists of several segments, preferably of three jacket segments 2, 3, 4.
  • the jacket segments 2, 3, 4 are connected according to FIG. 3 by an elastic bridge 5, which may consist of spring steel.
  • the bridge 5 is arranged at the two ends of adjacent jacket segments 2, 3 in such a way that there is no impact on the outer jacket which could lead to a tear in the paper web to be caught, which could adversely affect the function of the paper catching device. Therefore, the training shown at the connection point 6 should preferably be used.
  • each segment for example according to FIG. 1 of segment 2, there is a fastening possibility in the form of a bearing block 7, to which the part of a lever 9 pointing outwards is pivotably fastened by means of a bolt 8.
  • a bearing block 7 to which the part of a lever 9 pointing outwards is pivotably fastened by means of a bolt 8.
  • the right part of the roller 1 is mounted according to FIG. 1 in a side wall 10 via a bearing bush 11.
  • a bearing 12 is positioned in the bearing bush 11, in which the spindle 13 rotating together with the casing segments 2, 3, 4 is positioned.
  • the other end of the spindle 13 is positioned on the opposite side wall, not shown, of the printing press or a separate frame for the catching roller pair.
  • a compression spring 16 is arranged, which is normal, i.e. in trouble-free operation in the compressed state, since the movable ring 15 is blocked in its left position.
  • a radially adjustable block 18 is arranged on the movable ring 15 via a screw 19 engaging in a threaded hole 17.
  • a similar block is provided diametrically on the other side of the spindle 13, which is radially adjustable in the same way.
  • the location of these blocks 18 makes the engagement area at least one, however preferably two diametrically opposite pawls 20, 21 are fixed, which hold the slidable outer edges 46 via the blocks 18 with the slidable ring 15 in normal operation in the position shown, in which the compression spring 16 is tensioned.
  • the two pawls 20, 21 have radially directed elongated holes 22, 23 and obliquely positioned elongated holes 25, 26.
  • the two pawls 20, 21 can be displaced radially by means of an axially displaceable connecting plate 24, since the bolts 29, 30 attached to the connecting plate 24 engage in the oblique elongated holes 25, 26.
  • Bolts 27, 28 are positioned in the spindle 13 and each pass through one of the pawls 20, 21, as can be seen in particular in FIG. 2.
  • the bolts 27, 28 do not penetrate the plate 24, but represent a connection (longitudinal guide of 20, 21 versus 13).
  • This advantageous design of the radial control of the pawls 20, 21 ensures that the blocks 18 or the movable ring 15 seated on the spindle 13 are released during the axial displacement of a spring-loaded control bolt 31 as a result of the occurrence of a web break, so that the latter can pass through can axially move the pressure of the spring 16 at high speed.
  • the control pin 31 rotates with the roller 1 and is connected via a bearing 33 arranged in a bushing 34 to a pin 35 which passes through an armature 36.
  • the armature 36 can be the armature of an electromagnet or the piston of a pneumatic cylinder or other actuating element which is activated when a pressure carrier web break occurs, so that the armature 36 executes an axial movement.
  • the armature 36 is coupled to the control bolt 31 by means of a coupling 32.
  • each of the segments 2, 3, 4 is equipped with the device shown in FIGS. 1 and 2, as shown in FIG. 2, wherein each of the segments seen in the axial direction of the roller 1 has at least two such levers 9, as at 54 in Fig. 1 is indicated.
  • a return of the sliding ring 15 to the starting position, i.e. in the normal operating position, in which the compression spring 16 is compressed, is possible with the aid of a device shown on the right in FIG. 1.
  • bearing 59 is replaced by a straight guide 60.
  • the pawls move in accordance with arrow 61.
  • the additional frictional forces in accordance with arrow 53 mentioned in the "below" embodiment are thereby avoided.
  • the increase in diameter ie the radial movement of several segments 2, 3, 4 of the Diameter of one of the trap rollers, such as roller 1 and a further roller, for example a stationary roller 55 (FIG. 1), can be moved so that the print carrier web 57, which is preferably passed between the two rollers 1, 55 in a contact-free manner during trouble-free operation, is clamped and rotated one of the rollers 1 or 55 can wind up or at least be kept away from the printing unit to be protected, so that winding on the latter is avoided.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Replacement Of Web Rolls (AREA)
  • Rotary Presses (AREA)
EP90105974A 1989-04-01 1990-03-29 Papierfangvorrichtung Expired - Lifetime EP0391246B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3910556 1989-04-01
DE3910556A DE3910556C1 (enrdf_load_stackoverflow) 1989-04-01 1989-04-01

Publications (3)

Publication Number Publication Date
EP0391246A2 EP0391246A2 (de) 1990-10-10
EP0391246A3 EP0391246A3 (de) 1991-04-17
EP0391246B1 true EP0391246B1 (de) 1994-02-09

Family

ID=6377606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105974A Expired - Lifetime EP0391246B1 (de) 1989-04-01 1990-03-29 Papierfangvorrichtung

Country Status (4)

Country Link
US (1) US5036765A (enrdf_load_stackoverflow)
EP (1) EP0391246B1 (enrdf_load_stackoverflow)
JP (1) JPH02281945A (enrdf_load_stackoverflow)
DE (2) DE3910556C1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029366C2 (de) * 1990-09-15 1995-07-06 Kotterer Grafotec Vorrichtung zum Fangen und Halten einer gerissenen Bedruckstoffbahn
DE4039108C1 (enrdf_load_stackoverflow) * 1990-12-07 1992-04-16 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4118659B4 (de) * 1991-06-07 2005-01-05 Koenig & Bauer Ag Schaltgetriebe zur Betätigung von Stellmitteln in Druckmaschinen
US5313883A (en) * 1993-04-15 1994-05-24 Rockwell International Corporation Printing press with a dynamic expansion band adjusting mechanism
DE19509167C2 (de) * 1995-03-14 1997-04-03 Koenig & Bauer Albert Ag Bahnfangvorrichtung
DE19518502C2 (de) * 1995-05-19 1997-10-02 Wifag Maschf Rückhaltevorrichtung für eine in einer Rollenrotationsdruckmaschine laufende Bahn
JP2002505647A (ja) * 1996-10-11 2002-02-19 ケーニツヒ ウント バウエル アクチエンゲゼルシヤフト 印刷キャリアのための保持装置
FR2783199B1 (fr) * 1998-09-10 2000-12-01 Heidelberger Druckmasch Ag Dispositif automatique de capture d'une bande de matiere dans une machine d'impression rotative
EP1158092B1 (de) * 2000-05-24 2006-09-06 Voith Paper Patent GmbH Trockenpartie
US7875152B2 (en) * 2007-06-21 2011-01-25 Rodriguez Peter A Torn paper web capture system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE133782C (enrdf_load_stackoverflow) *
DE2530365C3 (de) * 1975-07-08 1979-05-17 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Einrichtung zur Durchmesserverstellung eines Zylinders
DE3215473C2 (de) * 1982-04-24 1985-03-07 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Vorrichtung zum Verhindern von Druckwerksschäden bei Druckträgerbahnrissen
DE3309558C2 (de) * 1983-03-17 1985-04-18 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Bedruckstoffbahnfangvorrichtung
DE3431686A1 (de) * 1984-08-29 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern maschinenschaedigender wickler
US4961378A (en) * 1987-05-27 1990-10-09 Rockwell International Corporation Anti-wrap up device for web fed printing presses

Also Published As

Publication number Publication date
DE59004536D1 (de) 1994-03-24
EP0391246A2 (de) 1990-10-10
US5036765A (en) 1991-08-06
EP0391246A3 (de) 1991-04-17
DE3910556C1 (enrdf_load_stackoverflow) 1990-10-11
JPH02281945A (ja) 1990-11-19

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