US20090072476A1 - Sheet feed device - Google Patents

Sheet feed device Download PDF

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Publication number
US20090072476A1
US20090072476A1 US11/911,322 US91132206A US2009072476A1 US 20090072476 A1 US20090072476 A1 US 20090072476A1 US 91132206 A US91132206 A US 91132206A US 2009072476 A1 US2009072476 A1 US 2009072476A1
Authority
US
United States
Prior art keywords
feed
feed rollers
sheet
roller
driving shaft
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.)
Abandoned
Application number
US11/911,322
Other languages
English (en)
Inventor
Hirohisa Inoue
Yukihiro Noto
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.)
Rengo Co Ltd
Original Assignee
Rengo Co Ltd
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 Rengo Co Ltd filed Critical Rengo Co Ltd
Assigned to HAMADA PRINTING PRESS CO., LTD. reassignment HAMADA PRINTING PRESS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INOUE, HIROHISA, NOTO, YUKIHIRO
Assigned to RENGO CO., LTD. reassignment RENGO CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HAMADA PRINTING PRESS CO., LTD.
Publication of US20090072476A1 publication Critical patent/US20090072476A1/en
Abandoned 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/09—Function indicators indicating that several of an entity are present
    • 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
    • B65H2403/40—Toothed gearings
    • B65H2403/42—Spur gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/142—Roller pairs arranged on movable frame
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1762—Corrugated

Definitions

  • This invention relates to a sheet feed device for feeding sheets such as corrugated sheets.
  • the sheets are fed to a plate cylinder by a sheet feed device provided with a pair of feed rollers.
  • a sheet feed device provided with a pair of feed rollers.
  • a sheet feed device which as shown in FIG. 7( a ), has two pairs of upper and lower feed rollers, each pair being spaced from the other pair in the sheet feed direction to feed corrugated sheets 31 supplied from a sheet delivery unit 30 between a plate cylinder 32 and a pressure cylinder 33 of a printing press with each sheet 31 clamped between the upper and lower feed rollers.
  • this sheet feed device even if the surface of the corrugated sheet 31 is off one of the two pairs of feed rollers 34 , 35 at a crease 31 a , the other pair of feed rollers 36 , 37 clamp the sheet 31 , so that the sheets can be fed with good accuracy.
  • the sheet comes to a position where the crease 31 a is between the feed rollers 34 , 35 on the upstream side before the feed rollers 36 , 37 on the downstream side clamp the front end of the sheet 31 , resulting in unstable feed of the sheet.
  • the crease 31 a comes between the feed rollers 36 , 37 on the downstream side after the sheet 31 has left the feed rollers 34 , 35 on the upstream side, thus resulting in unstable feed of the sheet.
  • the feed rollers 34 , 35 on the upstream side are arranged so as to laterally overlap with the downstream feed rollers 36 , 37 , thereby reducing the distance between the upstream feed rollers 34 , 35 and the downstream feed rollers 36 , 37 .
  • this distance can be decreased only to such a degree that the upstream feed rollers 34 , 35 do not interfere with the downstream feed rollers 36 , 37 .
  • such a conventional sheet feeder cannot feed the sheets 31 with good accuracy if the sheets are formed with a crease 31 a near their front or rear end.
  • the problem is to provide a sheet feeder which can feed sheets with good accuracy even if the sheets are formed with a crease near their front or rear end.
  • a sheet feed device which comprises a plurality of roller units each having an upper feed roller and a lower feed roller and arranged in a perpendicular direction to the sheet feed direction with spaces left therebetween, adjacent ones of the roller units being offset from each other with respect to the sheet feed direction, upper feed roller driving means for rotating the upper feed rollers of the roller units simultaneously, and lower feed roller driving means for rotating the lower feed rollers of the roller units simultaneously, thereby feeding sheets with each sheet clamped between the upper feed rollers and the lower feed rollers which are rotating.
  • the amount of offset between the adjacent roller units in the sheet feed direction can be freely set. Therefore, even if the sheets are formed with a crease near their front or rear end, the amount of offset between the adjacent roller units in the sheet feed direction can be set to be smaller than the distance from the front or rear end of the sheet to the crease, so that the sheets can be fed with good accuracy.
  • the upper feed roller driving means comprises an upper driving shaft provided parallel to the upper feed rollers and a torque transmitting means for transmitting the rotation of the upper driving shaft to the upper feed rollers.
  • the upper feed rollers can be driven by a common upper driving shaft, the rotation speeds of the individual upper feed rollers are made uniform, so that the sheet can be fed with better accuracy.
  • the plurality of roller units are arranged in a staggered fashion with alternate ones of the roller units offset in the sheet feed direction and the upper driving shaft is arranged over an intermediate point between the upper feed rollers on the upstream side and the upper feed rollers on the downstream side. Because with this arrangement, the feed rollers and the upper driving shaft are arranged in a vertical direction, the mounting space in the sheet feed direction can be saved. This makes it easier to mount such a device in a printing press unit such as a flexo folder gluer.
  • the lower feed roller driving means comprises a lower driving shaft provided parallel to the lower feed rollers and a torque transmitting means for transmitting the rotation of the lower driving shaft to the lower feed rollers.
  • the plurality of roller units are arranged in a staggered fashion with alternate ones of the roller units offset in the sheet feed direction and the lower driving shaft is arranged under an intermediate point between the lower feed rollers on the upstream side and the lower feed rollers on the downstream side.
  • the amount of offset in the sheet feed direction between the roller units arranged perpendicularly to the sheet feed direction can be set freely. This makes it possible to feed the sheets with high accuracy even if the sheets are formed with a crease near the front or rear end of the sheets.
  • FIG. 1 Side view of the roller unit of the sheet feed device according to this invention
  • FIG. 2 Perspective view of the roller unit of FIG. 1
  • FIG. 3 Side view showing how a corrugated sheet is off the upstream side feed roller of FIG. 1 at a crease
  • FIG. 4 Front sectional view of the roller unit of FIG. 1
  • FIG. 5 a Sectional view taken along line A-A of FIG. 4
  • FIG. 5 b Sectional view taken along line B-B of FIG. 4
  • FIG. 6 Sectional view taken along line C-C of FIG. 4
  • FIG. 7 Side view of a conventional sheet feed device
  • FIG. 1 shows an embodiment of the sheet feed device of the present invention. It includes a plurality of roller units 3 each having a pair of feed rollers 1 , 2 .
  • the roller units 3 clamp corrugated sheets 5 fed from a sheet delivery unit 4 and feed them between a plate cylinder 6 and a pressure cylinder 7 of a printing press.
  • the roller units 3 are arranged with spaces therebetween in a perpendicular direction to the sheet feed direction. Any adjacent roller units 3 are offset or displaced from each other in the sheet feed direction.
  • the amount of offset in the sheet feed direction is set to be smaller than the shortest one of the distances from the front or trailing ends of the respective corrugated sheets to their creases 5 a . Therefore, with any sheet 5 , as shown in FIG. 3 , when the crease 5 a faces the feed rollers 1 and 2 on the upstream side, the sheet 5 is clamped by the feed rollers 1 and 2 on the downstream side. When the crease 5 a faces the feed rollers 1 and 2 on the downstream side, the sheet is clamped by the feed rollers 1 and 2 on the downstream side. This assures stable feed of the corrugated sheets.
  • the upper feed rollers 1 are rotatably supported by an upper stay 8 as shown in FIG. 4 .
  • a gear 9 is provided at one end of each feed roller 1 .
  • An upper driving shaft 10 is rotatably provided on the upper stay 8 in parallel with the upper feed rollers 1 .
  • Gears 11 are mounted on the upper driving shaft 10 so as to mesh with the gears 9 for the upper feed rollers 1 .
  • the upper driving shaft 10 is driven and rotated by a driving unit (not shown). When the upper driving shaft 10 rotates, its rotation is transmitted through the gears 11 and 9 to the upper feed rollers 1 to rotate them simultaneously. Thus, all the upper feed rollers 1 rotate at the same speed, so that the corrugated sheets 5 can be fed with high accuracy.
  • the upper feed rollers 1 are supported individually by the upper stay 8 , they are less likely to deflect. This minimizes resonance of the upper feed rollers 1 and assures high feed accuracy when the corrugated sheets 5 are fed at high speed.
  • the upper stay 8 is mounted to a frame 12 so as to be movable in a vertical direction.
  • adjusting cams 13 are rotatably mounted in contact with the upper stay 8 as shown in FIG. 5 .
  • the adjusting cams 13 When the adjusting cams 13 are rotated by a driving unit (not shown), the adjusting cams 13 push the upper stay 8 up or down.
  • the gaps between the upper feed rollers 1 and the lower feed rollers 2 change.
  • the upper driving shaft 10 is supported by the upper stay 8 .
  • the adjusting cams 13 are turned to move the upper feed rollers 1 up or down, the upper driving shaft 10 move together, so that the gears 11 and 9 remain meshed with each other.
  • the lower feed rollers 2 are rotatably supported individually by a lower stay 14 and a gear 15 is provided at one end of each lower feed roller 2 .
  • the gears 15 are meshed with gears 17 mounted on a lower driving shaft 16 provided parallel to the lower feed rollers 2 .
  • the lower feed rollers 2 are supported individually by the lower stay 14 , they are less likely to deflect. This minimizes the resonance of the lower feed rollers 2 and the corrugated sheets 5 can be fed with good accuracy even if they are fed at high speed.
  • the roller units 3 are arranged in a staggered fashion with any adjacent ones offset from each other in the sheet feed direction.
  • the lower driving shaft 16 under an intermediate point between the feed rollers 2 of the roller units 3 , which are arranged in a staggered fashion.
  • roller units 3 are arranged in a staggered fashion in the embodiment, they may be arranged in any other way so long as the adjacent roller units 3 , which are arranged perpendicularly to the sheet feed direction, are offset from one another in the sheet feed direction.
  • the roller units 3 may be arranged in a V shape such that each roller unit is located downstream of the adjacent roller unit that is located nearer to the center of the device.
  • the torque transmitting means for transmitting the rotation of the upper driving shaft 10 to the upper feed rollers 1 is not limited to gears. It may be chains, timing belts, V-belts, etc. The same is true for the torque transmitting means for transmitting the rotation of the lower driving shaft 16 to the lower feed rollers 2 .
  • the upper feed rollers 1 are coupled to the upper driving shaft 10 through gears to rotate the upper feed rollers 1 simultaneously, this may be done by providing a driving unit such as a motor for each feed roller and starting the driving units simultaneously. With this arrangement, it is possible to selectively drive the feed rollers 1 according to the size of the corrugated sheet 5 and minimize the wear of the parts. The same is true for the driving of the lower feed rollers 2 .
  • corrugated sheets are cited as sheets to be fed, other sheets such as resin sheets formed with grooves may be fed instead.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US11/911,322 2005-05-09 2006-04-26 Sheet feed device Abandoned US20090072476A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005136304A JP2006312539A (ja) 2005-05-09 2005-05-09 シート送り装置
JP2005-136304 2005-05-09
PCT/JP2006/308703 WO2006120900A1 (fr) 2005-05-09 2006-04-26 Dispositif d’alimentation de feuilles

Publications (1)

Publication Number Publication Date
US20090072476A1 true US20090072476A1 (en) 2009-03-19

Family

ID=37396410

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/911,322 Abandoned US20090072476A1 (en) 2005-05-09 2006-04-26 Sheet feed device

Country Status (3)

Country Link
US (1) US20090072476A1 (fr)
JP (1) JP2006312539A (fr)
WO (1) WO2006120900A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100117293A1 (en) * 2008-11-10 2010-05-13 Riso Kagaku Corporation Feeding mechanism for printer
US20110140348A1 (en) * 2009-12-10 2011-06-16 Canon Kabushiki Kaisha Sheet post-processing apparatus and image forming apparatus
US20110227280A1 (en) * 2010-03-19 2011-09-22 Heidelberger Druckmaschinen Aktiengesellschaft Device for feeding sheets to a sheet stack

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101231200B1 (ko) 2010-12-13 2013-02-15 주식회사 에스아이이 박판 이송장치
KR101256651B1 (ko) 2011-11-24 2013-04-19 주식회사 에스아이이 박판 이송장치
KR101312026B1 (ko) 2012-08-30 2013-09-27 주식회사 에스아이이 박판 이송장치
JP6154707B2 (ja) * 2013-09-26 2017-06-28 株式会社Ｉｓｏｗａ 段ボールシート製函機の給紙装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6343787B1 (en) * 1998-11-12 2002-02-05 Fuji Photo Film Co., Ltd. Sheeting transport apparatus having anti-positional offset mechanism

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126332A (en) * 1981-01-30 1982-08-06 Mitsubishi Heavy Ind Ltd Transferring device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6343787B1 (en) * 1998-11-12 2002-02-05 Fuji Photo Film Co., Ltd. Sheeting transport apparatus having anti-positional offset mechanism

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100117293A1 (en) * 2008-11-10 2010-05-13 Riso Kagaku Corporation Feeding mechanism for printer
US8308156B2 (en) * 2008-11-10 2012-11-13 Riso Kagaku Corporation Feeding mechanism for printer
US20110140348A1 (en) * 2009-12-10 2011-06-16 Canon Kabushiki Kaisha Sheet post-processing apparatus and image forming apparatus
US8366095B2 (en) * 2009-12-10 2013-02-05 Canon Kabushiki Kaisha Sheet post-processing apparatus and image forming apparatus
US8702086B2 (en) * 2009-12-10 2014-04-22 Canon Kabushiki Kaisha Sheet post-processing apparatus and image forming apparatus
US20110227280A1 (en) * 2010-03-19 2011-09-22 Heidelberger Druckmaschinen Aktiengesellschaft Device for feeding sheets to a sheet stack

Also Published As

Publication number Publication date
JP2006312539A (ja) 2006-11-16
WO2006120900A1 (fr) 2006-11-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HAMADA PRINTING PRESS CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:INOUE, HIROHISA;NOTO, YUKIHIRO;REEL/FRAME:019968/0021

Effective date: 20071002

AS Assignment

Owner name: RENGO CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAMADA PRINTING PRESS CO., LTD.;REEL/FRAME:022339/0455

Effective date: 20090206

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION