EP0309815B1 - Vorrichtung zum Zuführen von Bogen an eine bogenverarbeitende Maschine, insbesondere Druckmaschine - Google Patents

Vorrichtung zum Zuführen von Bogen an eine bogenverarbeitende Maschine, insbesondere Druckmaschine Download PDF

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Publication number
EP0309815B1
EP0309815B1 EP88115031A EP88115031A EP0309815B1 EP 0309815 B1 EP0309815 B1 EP 0309815B1 EP 88115031 A EP88115031 A EP 88115031A EP 88115031 A EP88115031 A EP 88115031A EP 0309815 B1 EP0309815 B1 EP 0309815B1
Authority
EP
European Patent Office
Prior art keywords
control
roller
sheet
drum
rotation
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
EP88115031A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0309815A3 (en
EP0309815A2 (de
Inventor
Claus Dieter Barrois
Philipp Andreas Dieterich
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer 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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0309815A2 publication Critical patent/EP0309815A2/de
Publication of EP0309815A3 publication Critical patent/EP0309815A3/de
Application granted granted Critical
Publication of EP0309815B1 publication Critical patent/EP0309815B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/14—Retarding or controlling the forward movement of articles as they approach stops

Definitions

  • the invention relates to a device for feeding sheets to a sheet-processing machine, in particular a printing machine, according to the preamble of claim 1.
  • a paper feed device which has a conveyor belt in order to feed sheets up to pivotable front marks arranged in parallel, as a result of which the sheet is aligned.
  • the paper feed device has a pivotable pressure roller which can be brought into contact with a driven conveyor roller in cycles.
  • the control of the pressure roller and the front marks takes place via a cam which is attached to the cylinder to which the sheet is to be fed, so that the control of the pressure roller and front marks is dependent on the peripheral speed of the cylinder mentioned.
  • the contact time period of the pressure roller with the conveyor roller can be changed.
  • the change is made by preloading a compression spring, and thus changing the spring characteristic or spring force.
  • the compression spring is supported at one end on a lever carrying the pressure roller and at the other end on one with the control cam in operating contact removable control lever.
  • a change in the contact time of the pressure roller with the conveyor roller for example by increasing the spring preload, has the result that the pressure roller is pressed faster against the conveyor roller and is later lifted off again, whereby a sheet lying between the pressure roller and conveyor roller is accelerated earlier and longer. For this reason, the sheet to be fed also hits paper stops of the sheet grippers of the cylinder.
  • the device shown in DE-OS 33 19 753 is based on the disadvantage that an extension of the contact time of the pressure roller with the conveyor roller leads to an advance in the start time for the sheet acceleration.
  • An earlier impact of the sheet on the paper stops is associated with an unfavorable angular position of the gripper pads to the sheet, i.e. the sheet does not strike the paper stops tangentially to the circumference of the cylinder, as a result of which its leading edge is permanently deformed, particularly in the case of thin sheets, which leads to registration difficulties in the further course of printing.
  • the invention has for its object to provide a device for feeding a sheet to a printing cylinder with which the bias of the sheet (bulk) can be adjusted without changing the arrival time of the sheet on the cylinder.
  • the advantages that can be achieved with the invention lie in particular in that the sheet always hits tangentially to the circumference of the impression cylinder on paper stops of the gripper row of the impression cylinder and that the bag of the sheet can also be adjusted during the sheet feeding.
  • the adjustment of the bag not only ensures that the sheet is gripped securely and in register, but also has a noise-reducing effect. Adjustment during sheet feeding avoids machine downtimes.
  • the paper feed device 1 shown in FIG. 1 is arranged between a printing cylinder 2 and a conveyor belt 3.
  • the conveyor belt 3 wraps around a drive roller 4 and is driven by this.
  • the drive roller 4 is rotatably mounted in a known manner in side frames 5 of the paper feed device 1.
  • the drive roller 4 is driven in a known and therefore not detailed manner from the main drive of the printing press with a small transmission ratio, so that the conveying speed of the conveyor belt 3 is somewhat higher, than the peripheral speed of the printing cylinder 2.
  • the paper feed device 1 has, inter alia, a two-part sheet guide plate 6, 7 arranged in the extension of a conveying plane 10, on which a sheet 8 is conveyed directly to the printing cylinder 2.
  • the first sheet guide plate 6 has a plurality of through bores 9 arranged next to one another transversely to the conveying direction.
  • the second sheet guide plate 7 is a comb plate and has a number of adjacent recesses 11 through which grippers 12 arranged on the pressure cylinder 2 are guided.
  • the grippers 12 cooperate with gripper pads 15, each of which has a sheet stop 14.
  • the grippers 12 are shown in Fig. 1 in two positions I, II.
  • the position I indicates the moment when the sheet 8 strikes the sheet stop 14 almost tangentially on the circumference of the printing cylinder 2.
  • Position II marks the gripper closure and the tangential pulling of the sheet 8 from the conveying plane 10.
  • a photocell 20 is arranged, which detects whether a flow of sheets 8 is interrupted or not.
  • An acceleration roller 16 is arranged in a gap 13 between the sheet guide plates 6, 7 and its jacket 17 protrudes a little beyond the conveying plane 10 of the sheet guide plates 6, 7.
  • the acceleration roller 16 is driven with a small ratio from the main drive of the printing press, so that its Peripheral speed is a little higher (approx.1.27 times) than that of the printing cylinder 2.
  • the acceleration roller 16 there are a number of swiveling pressure rollers 18 which are arranged next to one another transversely to the conveying direction.
  • the pressure rollers 18 are each rotatably mounted on a first end 19 of levers 21. With a second end 22, the levers 21 are fastened to an outer tube 23 of a coaxial shaft.
  • the outer tube 23 is rotatably mounted on an inner part 24 of the coaxial shaft.
  • the inner part 24 of the coaxial shaft which is rotatably mounted in the side frame 5 of the paper feed device 1, has a number of bores 26 in the axial direction, that is to say transversely to the conveying direction, into each of which a lever 27 is firmly inserted.
  • the outer tube 23 of the coaxial shaft has as many slots 28, so that the levers 27 are freely pivoted through the slots 28.
  • the levers 27 are arranged approximately parallel to the levers 21 and carry 29 front marks 31 at their ends.
  • the front marks 31 protrude a little into the recesses 11 of the comb plate 7 in the downwardly pivoted position.
  • the outer tube 23 and the inner part 24 of the coaxial shaft are except for the levers 21; 27 still with two control levers 36; 35 firmly connected.
  • the control levers 36, 35 each have at their end 37; 40 a receptacle 38; 45 for a tension spring 39; 50 on that to apply a restoring force on Side frame 5 is attached.
  • the control lever 36 has a pin 41 on which a control roller 42 is rotatably mounted.
  • the control roller 42 is in constant contact with the surface area 43 of a control drum 44 by the force of the tension spring 39.
  • the control drum 44 is secured in a rotationally fixed manner by a feather key 46, but is axially displaceable on a right end 48 of a single-turn shaft 47, so that the control roller 42 also all surface areas 43 of the control drum 44 can be brought into contact.
  • the control roller 42 it is also possible to arrange the control roller 42 in an axially displaceable manner in order to bring it into contact with all surface regions 43 of the control drum 44.
  • the single-turn shaft 47 is rotatably supported with its center 49 in the side frame 5 of the drive side.
  • a left end 51 of the single-turn shaft 47 carries a rotationally and displaceably, another control cam 52, which is in constant contact with a control roller 54.
  • the control roller 54 is rotatably fastened to the control lever 35 and controls the movement of the front marks 31.
  • the drive pinion 56 is driven together with a shaft 57 for the acceleration roller 16, via a gear 58, by the main drive 59 of the printing press.
  • the control drum 44 is axially displaceable on the single-turn shaft 47 by means of an adjusting spindle 61.
  • the adjusting spindle 61 is one in a vertical part 62 to the side frame 5 screwed horizontal cross member 63 rotatably.
  • the adjusting spindle 61 has a thread 64 which is in screw contact with a threaded bore 66 of a cuboid-shaped adjusting element 67.
  • the threaded bore 66 is arranged exactly in the middle of a bottom 68 of the actuating element 67.
  • the actuating element 67 lies with an upper side 65 on a lower side 70 of the cross member 63 and has a horizontal counterbore 75 which coaxially surrounds a hub 69 of the control drum 44.
  • a roller bearing 71 which is also able to absorb axial forces, establishes the connection between the actuating element 67 and the control drum 44.
  • the adjusting spindle 61 has a knurled head 72 which facilitates manual operation of the adjusting spindle 61.
  • the adjusting spindle 61 can also be connected to the shaft of a servomotor, so that remote adjustment is also possible.
  • the control drum 44 is a cylindrical body with a radius R, which has a recess 73 with a smaller radius r on its circumference.
  • the recess 73 is long as the control drum and has an opening or switching angle ⁇ which changes continuously along an axis of rotation 77 of the control drum 44.
  • ⁇ opening or switching angle
  • the control roller 42 of the control lever 36 dips into this recess 73 with each revolution of the single-turn shaft 47 and runs on the surface region 43 with the smaller radius r.
  • the recess 73 has a first axis-parallel control line 74 and a second, non-parallel control line 76, however, arranged with a constant radius r to the axis of rotation 77.
  • the control lines 74, 76 indicate the position of the pressure rollers 18 relative to the acceleration rollers 16. When the control roller 42 crosses the control line 74, the pressure rollers 18 are pressed onto the acceleration rollers 16 “acceleration on”. When the control roller 42 crosses the control line 76, the pressure rollers 18 move away from the acceleration rollers 16 “acceleration off”.
  • the opening or switching angle ⁇ of the recess 73 in the control drum 44 is, as shown in FIG. 3, larger at a front edge 91 of the control drum 44 than at a rear edge 92.
  • the control drum 44 is rounded in all surface areas 43 so that the contact the control roller 42 with the control drum 44 is guaranteed over the full rotation of the single-turn shaft 47 and impacts that would result from lifting and placing the control roller 42 on sharp edges are avoided.
  • the photocell 20 is connected to an electromagnet 81 by means of a switching relay 79.
  • the electromagnet 81 has a shift rod 82 which can be moved out or in and which is articulated with an upper end 83 to a first end 84 of a coupling 86.
  • the coupling 86 is connected in a rotationally fixed manner by means of a second end 87 to an actuating shaft 88 mounted in the side frames 5.
  • two blocking cams 89 are attached at a distance. The blocking cams 89 each engage directly on the control lever 36 for the pressure rollers 18 or on the control lever 35 for the front marks 31 and block a pivoting movement of the control lever 35 when the photocells 20 signal an interruption in the sheet feed flow.
  • the adjusting spindle 61 rotated clockwise or counterclockwise. Rotation of the adjusting spindle 61, for example clockwise, causes the adjusting element 67 to be displaced and, associated therewith, the control drum 44 to be displaced to the right. The control roller 42 thereby comes into continuous contact with other surface areas 43 of the control drum 44.
  • the control roller 42 In a surface area 43 near the front edge 91, the control roller 42 is in contact longer due to the larger opening or switching angle ⁇ (for example 30 ° -100 °) with the smaller radius r of the control drum 44 than in a surface area 43 in the vicinity of the rear edge 92. It follows that the pressure roller 18 is also in contact with the acceleration roller 16 for a correspondingly longer time. This means that the start for the acceleration of a sheet 8 always remains constant and only the end of acceleration and thus the total acceleration duration changes.
  • ⁇ for example 30 ° -100 °

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
EP88115031A 1987-09-17 1988-09-14 Vorrichtung zum Zuführen von Bogen an eine bogenverarbeitende Maschine, insbesondere Druckmaschine Expired - Lifetime EP0309815B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3731216 1987-09-17
DE19873731216 DE3731216A1 (de) 1987-09-17 1987-09-17 Vorrichtung zum zufuehren von bogen an eine bogenverarbeitende maschine, insbesondere druckmaschine

Publications (3)

Publication Number Publication Date
EP0309815A2 EP0309815A2 (de) 1989-04-05
EP0309815A3 EP0309815A3 (en) 1989-05-03
EP0309815B1 true EP0309815B1 (de) 1991-07-17

Family

ID=6336210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115031A Expired - Lifetime EP0309815B1 (de) 1987-09-17 1988-09-14 Vorrichtung zum Zuführen von Bogen an eine bogenverarbeitende Maschine, insbesondere Druckmaschine

Country Status (6)

Country Link
US (1) US4892301A (cs)
EP (1) EP0309815B1 (cs)
JP (1) JPH01127536A (cs)
CS (1) CS274479B2 (cs)
DD (1) DD282438A5 (cs)
DE (2) DE3731216A1 (cs)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8929365D0 (en) * 1989-12-30 1990-02-28 Alcatel Business Systems Article feeding
DE4414445A1 (de) * 1994-04-26 1995-11-09 Heidelberger Druckmasch Ag Taktrolle zum Transport von Bogen in eine bogenverarbeitende Maschine
DE4439092C2 (de) * 1994-11-02 1998-06-10 Heidelberger Druckmasch Ag Vorrichtung zum Zuführen von Bogen
JP4440146B2 (ja) * 2005-03-10 2010-03-24 株式会社東芝 画像形成装置
JP4342461B2 (ja) * 2005-03-10 2009-10-14 株式会社東芝 画像形成装置
JP4468844B2 (ja) * 2005-03-10 2010-05-26 株式会社東芝 画像形成装置、シート搬送方法
JP4401986B2 (ja) * 2005-03-10 2010-01-20 株式会社東芝 画像形成装置、シート搬送方法
JP4429939B2 (ja) * 2005-03-10 2010-03-10 株式会社東芝 画像形成装置
JP2007333068A (ja) * 2006-06-14 2007-12-27 Toyota Motor Corp サーモバルブ
JP2009083476A (ja) * 2007-09-13 2009-04-23 Komori Corp シート状物の案内装置
WO2018147342A1 (ja) * 2017-02-09 2018-08-16 日本製紙株式会社 ゴム組成物およびその製造方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3630519A (en) * 1969-12-17 1971-12-28 Xerox Corp Document feed apparatus
CA940148A (en) * 1970-07-30 1974-01-15 Miller Printing Machinery Co. Apparatus for registering and feeding sheets to a sheet fed printing press
US3888129A (en) * 1974-02-21 1975-06-10 Illinois Tool Works Sheet acceleration and synchronization mechanism
CH641114A5 (de) * 1979-10-17 1984-02-15 Grapha Holding Ag Bogenanleger.
DE3107807C2 (de) * 1981-02-28 1983-01-20 Georg Spiess Gmbh, 8906 Gersthofen Bogenbeschleunigungsvorrichtung
JPS58181536U (ja) * 1982-05-31 1983-12-03 リョービ株式会社 両面印刷機の給紙装置
NL8503203A (nl) * 1985-11-21 1987-06-16 Oce Nederland Bv Inrichting voor het transporteren van een bundel vellen.

Also Published As

Publication number Publication date
JPH01127536A (ja) 1989-05-19
EP0309815A3 (en) 1989-05-03
DE3731216C2 (cs) 1989-07-13
DD282438A5 (de) 1990-09-12
JPH0559023B2 (cs) 1993-08-30
DE3863736D1 (de) 1991-08-22
US4892301A (en) 1990-01-09
CS619488A2 (en) 1990-09-12
DE3731216A1 (de) 1989-04-13
EP0309815A2 (de) 1989-04-05
CS274479B2 (en) 1991-04-11

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