US3831930A - Paper feeding apparatus for use in printing machine - Google Patents

Paper feeding apparatus for use in printing machine Download PDF

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Publication number
US3831930A
US3831930A US00342409A US34240973A US3831930A US 3831930 A US3831930 A US 3831930A US 00342409 A US00342409 A US 00342409A US 34240973 A US34240973 A US 34240973A US 3831930 A US3831930 A US 3831930A
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United States
Prior art keywords
suckers
cam
follower
main shaft
sucker
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Expired - Lifetime
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US00342409A
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English (en)
Inventor
S Shimizu
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.)
Hamada Printing Press Co Ltd
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Hamada Printing Press Co Ltd
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Publication date
Application filed by Hamada Printing Press Co Ltd filed Critical Hamada Printing Press Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0825—Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/54—Driving mechanisms other
    • B65H2403/543—Driving mechanisms other producing cycloids

Definitions

  • ABSTRACT A'paper feeding apparatus for use in a printing machine in which the sheets of paper are fed into the printing machine one after the other with the use of a [30] Foreign Application Priority Data Apr. 14, 1972 Japan........................... 47-37527 271/91 271/98 sucker device which is continuously rotated along a [51] Int; B65I'l 3/08 difi d l i Curve by means a Cam mechanism [58] Field of 271/90, 91, 93-96, including a Cam and follower i cooperation i 271/98, 104, 106408 BIG 1 suction systems, whereby the disadvantages inherent in a conventional paper feeding apparatus having a rel References Cited ciprocating sucker is substantially eliminated.
  • the present invention relates to a paper feeding apparatus for use in a printing machine and, more particularly, to an apparatus for separating and forwarding a sheet from the top that of the stacked sheets which comprises one or more sucker devices which are rotated and during the part of the rotation pick up and feed successive sheets of paper to rolls of a printing press as well as means for blowing air under the sheets as they are fed to the rolls.
  • At least two pairs of revolving suckers are provided for feeding paper 'to a printing press, each sucker being connected by means of a shaft to one position of a follower driven with an auxiliary shaft and a main shaft driven by any conventional means and revolving around a cam.
  • a follower is rotatably mounted on the auxiliary shaft eccentrically secured on the main shaft, so that the mounting portion revolves around the main shaft in a circular path together with the auxiliary shaft while the outer end provided with the sucker also revolves but follows the orbit of a cam consisting of at least more than three cycloid curves, the cam being formed the orbit either on the outer periphery or the inner periphery.
  • the sucker is shaped in the form of a T, the suction pad being at the lower end of the long section, and it is pivotally mounted at the center of the cross section on the end of the shaft fixedly mounted on the follower.
  • a further feature of this embodiment is that the blowpipe for blowing air to maintain sheets being transported in a horizontal position is caused to move backwards and forwards relative to the stack of paper through the action of a lever which is in contact with a large cam which has a large diameter and a small diameter and which is fixedly mounted on the main shaft, the cam being so positioned as to cause the blow pipe move forwards when a pair of suckers is picking up and transporting a sheet of paper and move backwards at other times.
  • the apparatus of the present invention offers outstanding advantages by the use of a rotating sucker since its operation is very efficient, and its construction is simpler than that of conventional devices. It also overcomes the disadvantages inherent in conventional devices having a sucker of reciprocating motions, that is to say the problems of increasing speed of operation. In conventional devices speed of operation is very low, and if it is wished to increase the speed the mechanism and maintenance of the machine become much more complicated whereas in the apparatus of the present invention speed can be increased as much as required, without any extra complications.
  • FIG. 1 is a schematic side elevational view, partially broken away and showing cross-sections taken along the line II in FIG. 2, of an essential portion of a paper feeding arrangement and its associated parts according to one preferred embodiment of the present invention
  • FIG. 2 is a sectional view through IIIl of FIG. 1, and
  • FIG. 3 is a sectional view through lll-lll of FIG. 2.
  • a pair of side boards 11, an end board 3 and a pair of .cross bars 2 form a housing for accommodating the sucker driving mechanism side boards 1 and 1 being parallel to one another and firmly attached to the end board 3 at one end to form an approximately U-shaped unit and the cross bars 2 and 2 being fixedly mounted between the side boards 1 and 1 across the open end of the U-shaped unit.
  • This housing is provided to the body of the printing machine in such a manner that the sucker provided in the housing as will be mentioned later can be faced to sheets stacked on a table 4 so as to feed the sheet one after the other to rollers 7 and 7' for feeding the sheet 5 to the printing press.
  • sheets 5 of paper are stacked in piles on the table 4 which is raised by any conventional means to ensure that a top sheet a is always at the same distance from the housing described above, and more detachably engaged at their one end with a set of pivoting stoppers 6 of conventional design to ensure that the sheets of paper are always kept properly stacked.
  • the pair of rollers 7 and 7' Near the left side of the stacked sheets 5 there are provided the pair of rollers 7 and 7' to which the sheet is fed and which rotate constantly to forward the sheet to the printing position of the printing press by any conventional means.
  • a main driving shaft 8 is horizontally journaled in bearings 9a provided in one side board l, and is connected at one end to any conventional driving means such as a motor and at the other end to a cam plate 9 which acts on a roller 44 to control the shifting movement of a blow pipe 40 in'a manner that will be described later.
  • the main shaft 8 is driven at the same speed of the printing cylinder of the printing press, it is preferably operate to feed the sheets of paper in accordance with the printing speed of the printing press.
  • the stoppers 7 can be shifted to detach from the sheets by the conventional driving mechanism (not shown) so as to easily pass'the sheet over the stoppers when the sheet forwards by suckers 30 as will be mentioned later.
  • An intermediate shaft 10 having an elliptical cross section is rigidly attached at one end to the cam plate 9 below but not coaxially attached with the main shaft 8 while at its other end an auxiliary shaft 11 is rigidly but not coaxially attached, the axis of the shaft 1 1 being further removed than that of the shaft 10 from the axis of the main shaft 8;
  • the shaft 11 is horizontally mounted in journal 11a around which is rotatably mounted an approximately elliptical cam-follower 12 which is thus constrained to move with but is free to rotate around the shaft 1 1.
  • the shape of the cam-follower 12 is round at its both ends like an ellipse but part of the sides 55 and 55' parallel to the longer axis are cut out to provide passages for air so that the cam-follower 12 is made narrower around the center.
  • Shafts 8, 10, ii and cam 9 are preferably constructed as one unit while the cam-follower 12 is rotatable around the shaft 11 through the journal 11a, and when the main driving shaft 8 rotates the cam 9 is rotated, the intermediate shaft 10 turns around the axis of the shaft 8 and the auxiliary shaft llrevolves in a circular path around the axis of the shaft 8 at the same time carrying with it the cam-follower 12, which, however, is free to rotate.
  • a pair of discs 13 and 13 are fixedly attached at their center on both surfaces of the cam-follower 12 with which they revolve, and have sufficient sizes of diameter to substantially cover the both surfaces of the camfollower l2 and a plane plate 14 which is slidably, hermetically inserted between the air of discs.
  • the plane plate 14 is fixedly attached at one end to the end board 3 by bolts 16 and extends into the body of the housing perpendicular to the shaft 11, and which contains the cut-out cam portion 15 which is formed as a hole having a shape of an approximately equilateral triangle, the apices being rounded and the shape of the sides being a concave sine curve, and the center of the triangle being in line with the axis of the main shaft 8.
  • the approximately elliptical cam-follower 12 on the shaft 11 is fitted into the cam portion 15 of the plane plate 14, and the shape and proportion of the cam-follower 12 and the cam portion 15 are such that the cam-follower 12 can rotate freely in the cam portion 15 and so that during such rotation both ends of the cam-follower 12 are always in sliding, hermetic contact with the inner periphery of the cam portion without obstruction, the cam portion 15 being closed hermetically by the pair of the discs 13 and 13' at both sides so as to provide a room surrounded by the cam portion 15 and the discs 13 and 13' which is divided into two parts, that is, a suction part and an open part by the cam-follower 12 at the counter.
  • the discs 13 and 13 are approximately large enough to cover the cam portion 15 of the plane plate 14 fixed on the end board 3, since they rotate with the cam-follower 12, which they are rigidly attached, they do not always cover entirely the cam portion 15 during the rotation so that the apex of the cam portion 15 which is apart from the auxiliary shaft 11 is exposed to the outside.
  • the passage for air through a passage 50 connected to the compressor and the suction part of the cam portion 15 must not open to the atmosphere, and, therefore, there are provided a pair of extra cover plates 24 and 24 each positioned on the same plane to the corresponding disc 13 to form an extension part thereof, one side of which forms an arc which has the same radius as the disc 13 and which is kept constantly in sliding, hermetic contact with the outer periphery of the disc 13 by means of a lever which is fixedly attached at one end of the extra cover plate 24 by a pin and rotatably mounted at the other end, of which a boss 21 is provided, to a shaft 17 fixed to the plane plate 14 by a screw 22, there being a winding spring 23 mounted between a plate 19 fixed to the shaft 17 by a pin 18 and the boss 21 of the lever 20 which constantly acts to push the cover plate 24 against the corresponding disc 13 by its resilient force so that the suction part of
  • the apex of the cam portion 15 connected to the air passage 50 is always hermetically sealed by the cover plate 24, while the apices positioned at the righthand corner and the upper corner of the cam portion 15 are alternatively opened to the outside by rotation of the discs 13 around the main shaft 8.
  • Each sucker is approximately T-shaped and rotatably mounted onto the end of shaft as its center crossed over the arm section to the leg section of the T, there being a suction pad 30d at the bottom of the leg section and each sucker having attached at one end of the arm section one end of a spring 33, the other end of which is attached to a pin 32 mounted on the disc 13, so that although each sucker is rotatably mounted on the shaft it does not rotate freely but is held elastically in a fixed position reIative to the disc 13 so as to put the suction pad 30d outside to face to the stacked sheets.
  • the sucker on one side of the cam-follower l2 and discs 13 has a roller 34 attached to its arm section at the end opposite to the end to which a spring 33 is attached, while the sucker on the opposite side of the cam-follower 12 and discs 13 has a roller 35 attached at approximately the middle portion of its leg section of the T formed by the sucker.
  • the purpose of the rollers 34, 35 is to guide the suckers, in a manner that will be described below, by riding, respectively, on a rollerguide cam 45 which is fixed through a plate 46 to the side board 1, and a roller-guide cam 47 which is fixed to the cross bar 2.
  • Within the plane plate 14 there are provided two passages 50 and 51 for air leading from the inside of the cam portion 15 to the outside.
  • On passage 50 is connected between the suction part of the cam portion 15 and an outlet 49 connected with a compressor, or any other conventional means (not shown) for inducing suction of air through the passage 50, while the other passage 51 leads from the open part of the cam portion 15 to the atmosphere.
  • blow pipe 40 held in a holder 42 which is fixedly mounted by a pin 39 on a shaft 38 of which both ends are held by pins 39' and 39' in a pair of levers 36 and 36 each having a pin 37 which is rotatably mounted in the side board so as to be able to rotate the blow pipe 40 around axes of pins 37 and 37 with levens 36 and 36, one of which has a extension portion 43 having a roller 44 which is always in contact with the cam plate 9 fixedly attached to the main shaft 8 by the rotation force produced by the weight of the blow pipe 40, one end of which the opening is connected with a means (not shown) for blowing air such as a blower while the other end of which the opening 41 having a board section is position to face to the upper right hand corner of the stacked sheets at the back of the sucker 30,- so that when the roller 44 is in contact with the lobe of the cam plate 9, the opening 41 of the blow pipe 40 is in the position away from the stacked sheets as shown by the solid
  • suckers 30 rotate, as they pass from a point before the apex a to a point near the apex ,8 they are held vertical, and thus the opening of the suction pads 30d at the ends of the suckers 30 are held horizontal during the time they must pick up and transport a sheet of paper to the printing press rolls 7.
  • suckers pass from the apex B to the apex 'y they are held only by the springs 33 at its free position disregarding the cams 47 and 45.
  • one end of the cam 12 is at the apex a as shown with a real line in FIG.
  • the passage for air 54 of the suckers 30 is in connection, through the suction part of the cam portion 15, with the passage for air 50 of the plane plate 14 associated with the suction means and continues to be in connection with the passage for air 50 until the end of the cam-follower 12 reached a position on the periphery of the cam portion 15 between the passage for air 50 and the apex 7, while during this time the passage for air 54' at the other end of the camfollower 12 is similarly in connection with the passage for air 51 of the plane plate 14 opened to the atmosphere.
  • the stopper 6 can be shifted to detach from the sheets by the conventional driving mechanism (not shown) so as to permit the sheet to easily pass over the stopper when the sheet is brought forward by the sucker 30.
  • the passage for air 54 of the cam 12 connected with the sucker 30 moves away from the passage for air 50 of the plane plate 14 and lines up with a opening of the cam portion 15 near the apex 7 which does not covered by the disc 13 and exposed to the atmosphere so that air flows in from outside to and cause the sucker 30 to lose the suction force; thus, the sheet held to the suction pad 30d of the sucker 30 is released.
  • the paper feeding apparatus of the present invention is provided with a plurality of suckers rotating around the main shaft at half of the speed of the main gear 8 in one direction in a row with a constant interval between each other so as to operate for separating and forwarding the top sheet of the stacked sheets one after the other in succession, whereby the feeding operation can be carried out accurately and continuously at high speed even when the suckers are rotating at relatively slow speed.
  • the blowing operation of the blow pipe 40 can be associated with the suction operation of the sucker as well as the shifting operating of the stopper for obtaining smoothly the forward movement of the sheet.
  • the present invention is not to be limited by the embodiment, but such changes and modifications should be construed as included within the scope thereof unless otherwise departing therefrom.
  • An automatic paper feeding apparatus for use in a printing machine, comprisingza housing, a main shaft disposed in said housing, an auxiliary shaft disposed in said housing operatively connected to said main shaft, a means for driving said main shaft, a plurality of suckers operatively connected to said main shaft disposed equidistantly from said auxiliary shaft and at a predetennined distance from each other, suction means connected with a respective sucker for sucking air therefrom, and means for driving said suckers including a first cam means fixedly mounted in said housing concentric to said main shaft, said first cam including a plurality of cam surface portions each of which approximates a cycloid curve, a follower rotatably mounted on said auxiliary shaft and cooperating with said cam surface portions, means for eccentrically securing said follower on said main shaft, said follower being revolved around said main shaft while rotating around said auxil obviouslyy shaft in one direction under the guidance of said approximately cycloid curved cam surface portions to cause a cycloid movement
  • a paper feeding apparatus according to claim 1, wherein said cam surface portions are disposed on the inner periphery of said first cam means.
  • a paper feeding apparatus wherein an air chamber is provided in said housing, said follower dividing said chamber into a first and second air chamber portions, said follower including first and second end portions which slidingly engage said cam surface portions to hermetically seal said first air chamber portion from said second air chamber during rotation of said follower.
  • said first cam means includes. a plate member fixedly mounted in said housing, said plate member being provided with a cutout portion defining said plurality of cam surface portions and wherein said air chamber includes a pair of disc members mounted on said auxiliary shaft and disposed on respective sides of said follower and said plate member.
  • a paper feeding apparatus according to claim 1, wherein means are provided for operatively connecting said suction means with said means for driving said suckers whereby said suction means is operated in accordance with the position of said. suckers.
  • a paper feeding apparatus according to claim 1, wherein said follower includes first and second end portions, said means for connecting said follower with said suckers including an additional shaft disposed at said first and second end portion, said suckers being rotatably mounted on each of said shafts, and means operatively connected with said suckers for normally urging the same in the direction of the top sheet of the stacked sheets.
  • An automatic paper feeding apparatus for use in a printing machine, comprising: a housing, a main shaft disposed in said housing, an auxiliary shaft disposed in said housing operatively connected with said main shaft, a means for driving said main shaft, a plurality of suckers operatively connected with said main shaft disposed equidistant from said auxiliary shaft and at a predetermined distance from each other, suction means connected with a respective sucker for sucking air therefrom, means for driving said suckers including a first cam means fixedly mounted in said housing concentric to said main shaft, said first cam means including a plurality of cam surface portions each of which approximates a cycloid curve, a.
  • a paper feeding apparatus wherein means are provided for operatively connecting said blowing means with said means for driving said suckers, whereby said blowing means is operated in accordance with the position of said suckers.
  • blowing means includes a blow pipe, a blow pipe holder pivotally connected to said housing, and wherein said means for operatively connecting said blowing means with said means for driving said suckers includes an additional cam means mounted on said main shaft and a lever means operatively connected with said pipe holder and cooperating with said cam to cause said blow pipe to be moved toward and away from the stacked sheets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US00342409A 1972-04-14 1973-03-19 Paper feeding apparatus for use in printing machine Expired - Lifetime US3831930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47037527A JPS517405B2 (xx) 1972-04-14 1972-04-14

Publications (1)

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US3831930A true US3831930A (en) 1974-08-27

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US00342409A Expired - Lifetime US3831930A (en) 1972-04-14 1973-03-19 Paper feeding apparatus for use in printing machine

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US (1) US3831930A (xx)
JP (1) JPS517405B2 (xx)
CH (1) CH560153A5 (xx)
DE (1) DE2311268C3 (xx)
FR (1) FR2180414A5 (xx)
GB (1) GB1415208A (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916790A (en) * 1973-10-22 1975-11-04 Roland Offsetmaschf Control device for blowing and suction air in printing presses
US3993301A (en) * 1974-06-19 1976-11-23 Vits-Maschinenbau Gmbh Device for raising the top sheet of a pile by blast air
EP0100143A1 (en) * 1982-07-06 1984-02-08 R. A. JONES & CO. INC. A magazine for flat cartons, prefolded leaflets and the like
US5224694A (en) * 1992-02-27 1993-07-06 R. R. Donnelley & Sons Co. Selectively disabled signature feeding apparatus
US5542656A (en) * 1993-05-21 1996-08-06 Ferag Ag Apparatus for individually separating stacked printed products
EP1201577A2 (de) * 2000-10-25 2002-05-02 Koenig & Bauer Aktiengesellschaft Einrichtung zum Zuführen von Bogen
US20040178567A1 (en) * 2003-03-12 2004-09-16 Holger Edinger Method and apparatus for guiding sheets to a sheet processing machine, in particular a printing press
CN108973236A (zh) * 2018-01-15 2018-12-11 江苏南江智能装备股份有限公司 手提袋袋口贴卡机构及包含该机构的贴卡机
US11292680B2 (en) * 2017-10-10 2022-04-05 Bobst Grenchen Ag Sheet feeder for a machine for processing material in sheet form, such as paper, cardboard or films
CN114572728A (zh) * 2022-03-03 2022-06-03 台州市邦盈纸品有限公司 一种气浮式双棍柔性退纸架

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578823A1 (fr) * 1985-03-12 1986-09-19 Limon Claude Dispositif pour l'alimentation en continu de produits en plaques, notamment de plaques de circuits imprimes
US9334579B2 (en) * 2013-10-29 2016-05-10 Westinghouse Electric Company Llc Targeted heat exchanger deposit removal by combined dissolution and mechanical removal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714006A (en) * 1951-04-11 1955-07-26 Paul W Layden Sheet feeder
US3386558A (en) * 1967-05-23 1968-06-04 Mead Corp Feeder mechanism
US3575409A (en) * 1968-12-03 1971-04-20 Mead Corp Feeder mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714006A (en) * 1951-04-11 1955-07-26 Paul W Layden Sheet feeder
US3386558A (en) * 1967-05-23 1968-06-04 Mead Corp Feeder mechanism
US3575409A (en) * 1968-12-03 1971-04-20 Mead Corp Feeder mechanism

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3916790A (en) * 1973-10-22 1975-11-04 Roland Offsetmaschf Control device for blowing and suction air in printing presses
US3993301A (en) * 1974-06-19 1976-11-23 Vits-Maschinenbau Gmbh Device for raising the top sheet of a pile by blast air
EP0100143A1 (en) * 1982-07-06 1984-02-08 R. A. JONES & CO. INC. A magazine for flat cartons, prefolded leaflets and the like
JPS5926833A (ja) * 1982-07-06 1984-02-13 ア−ル・エイ・ジヨ−ンズ・アンド・コンパニ−・インコ−ポレ−テツド 厚紙供給装置用マガジン
US4518301A (en) * 1982-07-06 1985-05-21 R. A. Jones & Co. Inc. Orbital feeder
US5224694A (en) * 1992-02-27 1993-07-06 R. R. Donnelley & Sons Co. Selectively disabled signature feeding apparatus
US5542656A (en) * 1993-05-21 1996-08-06 Ferag Ag Apparatus for individually separating stacked printed products
EP1201577A2 (de) * 2000-10-25 2002-05-02 Koenig & Bauer Aktiengesellschaft Einrichtung zum Zuführen von Bogen
EP1201577A3 (de) * 2000-10-25 2004-01-28 Koenig & Bauer Aktiengesellschaft Einrichtung zum Zuführen von Bogen
US20040178567A1 (en) * 2003-03-12 2004-09-16 Holger Edinger Method and apparatus for guiding sheets to a sheet processing machine, in particular a printing press
US7665722B2 (en) * 2003-03-12 2010-02-23 Heidelberger Druckmaschinen Ag Method and apparatus for guiding sheets to a sheet processing machine, in particular a printing press
US11292680B2 (en) * 2017-10-10 2022-04-05 Bobst Grenchen Ag Sheet feeder for a machine for processing material in sheet form, such as paper, cardboard or films
CN108973236A (zh) * 2018-01-15 2018-12-11 江苏南江智能装备股份有限公司 手提袋袋口贴卡机构及包含该机构的贴卡机
CN114572728A (zh) * 2022-03-03 2022-06-03 台州市邦盈纸品有限公司 一种气浮式双棍柔性退纸架

Also Published As

Publication number Publication date
GB1415208A (en) 1975-11-26
FR2180414A5 (xx) 1973-11-23
DE2311268C3 (de) 1975-12-11
JPS517405B2 (xx) 1976-03-08
JPS496A (xx) 1974-01-05
DE2311268A1 (de) 1973-10-25
DE2311268B2 (de) 1975-04-17
CH560153A5 (xx) 1975-03-27

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