EP0815045B1 - Apparatus for feeding sheet material - Google Patents

Apparatus for feeding sheet material Download PDF

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Publication number
EP0815045B1
EP0815045B1 EP95930641A EP95930641A EP0815045B1 EP 0815045 B1 EP0815045 B1 EP 0815045B1 EP 95930641 A EP95930641 A EP 95930641A EP 95930641 A EP95930641 A EP 95930641A EP 0815045 B1 EP0815045 B1 EP 0815045B1
Authority
EP
European Patent Office
Prior art keywords
rollers
sheet
driven
rolls
lowermost sheet
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
EP95930641A
Other languages
German (de)
French (fr)
Other versions
EP0815045A1 (en
Inventor
John Anthony Sullivan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0815045A1 publication Critical patent/EP0815045A1/en
Application granted granted Critical
Publication of EP0815045B1 publication Critical patent/EP0815045B1/en
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
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • 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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/063—Rollers or like rotary separators separating from the bottom of pile
    • 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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0692—Vacuum assisted separator rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/31—Suction box; Suction chambers
    • B65H2406/312—Suction box; Suction chambers incorporating means for transporting the handled material against suction force
    • B65H2406/3122—Rollers

Definitions

  • This invention concerns apparatus for feeding sheet materials particularly, though by no means exclusively, of corrugated board or card as used in the box and carton making industries.
  • stacked sheets are placed on a feed table against a gate which allows only the lowermost sheet to pass therebeneath under the action of a reciprocating vacuum suction cup, feed rollers or a kicker mechanism, to be taken into the nip of take-up rolls.
  • a reciprocating vacuum suction cup, feed rollers or a kicker mechanism to be taken into the nip of take-up rolls.
  • Such feeding arrangements must be controlled with great precision and even then misfeeds are a not uncommon experience.
  • apparatus for feeding sheet material comprising a feed table having a gate and upon which the sheets may be stacked against the gate which allows only the lowermost sheet to pass therebeneath, a bed of rollers within the surface of the table which may be rotatably driven to advance the lowermost sheet beneath the gate into the nip of take-up rolls and means to allow the rollers to free-wheel once the lowermost sheet is being advanced by said take-up rolls.
  • the rollers may be fitted with sprag clutches and may advance the sheet being fed at a slower speed than that of the take-up rolls.
  • Vacuum suction may be applied from beneath the rollers to pull the lowermost sheet downwardly thereagainst.
  • the rollers may be spaced such that the lowermost sheet can drape to give substantial area contact between the sheet and the rollers.
  • the apparatus comprises a feed table 10 upon which a stack of sheets S may be placed against a gate 11 beneath which only the lowermost sheet in the stack may pass.
  • rollers are mounted within a chamber 15 to which vacuum suction is applied to pull the lowermost sheet downwardly thereagainst.
  • the spacing between the rollers 14 allows the sheet to drape between them to enhance the area of contact.
  • rollers advance the lowermost sheet by being rotatably driven as indicated by the arrows X at a speed less than the speed of the take-up rolls 12. Once the sheet is advanced by the rolls 12 the rollers 14 free-wheel, the rollers 14 having sprag clutches between their inner peripheries and their drive shafts 16.
  • rollers 14 are rotatably interconnected by drive belts 17 and one roller 14 is driven by a belt 18 itself driven from a toothed belt 19 reciprocated by an arm 20 operating in time with line speed (typically that previously used for a kicker mechanism, facilitating easy retro-fitting).
  • line speed typically that previously used for a kicker mechanism, facilitating easy retro-fitting.
  • the rollers 14 are not driven in reverse direction since they are then in their freewheeling mode.
  • the rollers 14 may be driven intermittently or continuously by an electric motor, though this is not preferred since, in the case of a continuous drive, there will be some slippage between the rearward rollers and the next sheet to be fed until the previous sheet has cleared the gate 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Advancing Webs (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Description

This invention concerns apparatus for feeding sheet materials particularly, though by no means exclusively, of corrugated board or card as used in the box and carton making industries.
In general, stacked sheets are placed on a feed table against a gate which allows only the lowermost sheet to pass therebeneath under the action of a reciprocating vacuum suction cup, feed rollers or a kicker mechanism, to be taken into the nip of take-up rolls. Such feeding arrangements must be controlled with great precision and even then misfeeds are a not uncommon experience.
One solution to these problems is proposed in GB-A-2274276 which discloses an arrangement according to the pre-characterising part of claim 1. This arrangement involves reciprocating movement of the entire roller bed, which is not energy efficient and places certain restrictions on sheet size.
According to the present invention there is provided apparatus for feeding sheet material comprising a feed table having a gate and upon which the sheets may be stacked against the gate which allows only the lowermost sheet to pass therebeneath, a bed of rollers within the surface of the table which may be rotatably driven to advance the lowermost sheet beneath the gate into the nip of take-up rolls and means to allow the rollers to free-wheel once the lowermost sheet is being advanced by said take-up rolls.
The rollers may be fitted with sprag clutches and may advance the sheet being fed at a slower speed than that of the take-up rolls.
Vacuum suction may be applied from beneath the rollers to pull the lowermost sheet downwardly thereagainst.
The rollers may be spaced such that the lowermost sheet can drape to give substantial area contact between the sheet and the rollers.
The invention will be further apparent from the following description, with reference to the figures of the accompanying drawing, which show, by way of` example only, one form of sheet feeding apparatus embodying same.
Of the drawing :-
Figure 1
shows a side elevation of the apparatus; and
Figure 2
shows a cross-section through the apparatus on the line II-II of Figure 1.
Referring now to the drawing, it will be seen that the apparatus comprises a feed table 10 upon which a stack of sheets S may be placed against a gate 11 beneath which only the lowermost sheet in the stack may pass.
Successive sheets are advanced beneath the gate 11 into the nip of take-up rolls 12 by a bed 13 of rollers 14 within the surface of the table.
The rollers are mounted within a chamber 15 to which vacuum suction is applied to pull the lowermost sheet downwardly thereagainst. The spacing between the rollers 14 allows the sheet to drape between them to enhance the area of contact.
The rollers advance the lowermost sheet by being rotatably driven as indicated by the arrows X at a speed less than the speed of the take-up rolls 12. Once the sheet is advanced by the rolls 12 the rollers 14 free-wheel, the rollers 14 having sprag clutches between their inner peripheries and their drive shafts 16.
In this example, the rollers 14 are rotatably interconnected by drive belts 17 and one roller 14 is driven by a belt 18 itself driven from a toothed belt 19 reciprocated by an arm 20 operating in time with line speed (typically that previously used for a kicker mechanism, facilitating easy retro-fitting). On the reverse stroke of the arm 20 the rollers 14 are not driven in reverse direction since they are then in their freewheeling mode.
It will be appreciated that it is not intended to limit the invention to the above example only, many variations, such as might readily occur to one skilled in the art, being possible, without departing from the scope thereof as defined by the appended claims.
Thus, for example, the rollers 14 may be driven intermittently or continuously by an electric motor, though this is not preferred since, in the case of a continuous drive, there will be some slippage between the rearward rollers and the next sheet to be fed until the previous sheet has cleared the gate 11.

Claims (9)

  1. Apparatus for feeding sheet material comprising a feed table(10) having a gate(11) and upon which the sheets (5) are stacked against the gate which allows only the lowermost sheet to pass therebeneath, a bed (13) of rollers (14) within the surface of the table characterised in that such rollers being rotatably driven to advance the lowermost sheet beneath the gate into the nip of take-up rolls (12) and means to allow the rollers to free-wheel once the lowermost sheet is being advanced by said take-up rolls.
  2. Apparatus according to claim 1 wherein the rollers are fitted with sprag clutches and advance the sheet being fed at a slower speed than that of the take-up rolls.
  3. Apparatus according to claim 1 or claim 2 wherein vacuum suction is applied from beneath the rollers to pull the lowermost sheet downwardly thereagainst.
  4. Apparatus according to any one of claims 1 to 3 wherein the rollers are spaced such that the lowermost sheet can drape to give substantial area contact between the sheet and the rollers.
  5. Apparatus according to any preceding claim wherein the rollers are rotably interconnected by drive belts (17) and one is driven by a further drive belt (19) reciprocated by an arm (20) operating in time with line speed.
  6. Apparatus according to claim 5 wherein said further drive belt is toothed.
  7. Apparatus according to any one of claims 1 to 4 wherein the rollers are driven by an electric motor.
  8. Apparatus according to claim 7 wherein the rollers are driven intermittently.
  9. Apparatus according to claim 7 wherein the rollers are driven continuously.
EP95930641A 1995-03-21 1995-09-05 Apparatus for feeding sheet material Expired - Lifetime EP0815045B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9505616.4A GB9505616D0 (en) 1995-03-21 1995-03-21 Apparatus for feeding sheet material
GB9505616 1995-03-21
PCT/GB1995/002097 WO1996029269A1 (en) 1995-03-21 1995-09-05 Apparatus for feeding sheet material

Publications (2)

Publication Number Publication Date
EP0815045A1 EP0815045A1 (en) 1998-01-07
EP0815045B1 true EP0815045B1 (en) 1999-03-17

Family

ID=10771520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95930641A Expired - Lifetime EP0815045B1 (en) 1995-03-21 1995-09-05 Apparatus for feeding sheet material

Country Status (11)

Country Link
EP (1) EP0815045B1 (en)
JP (1) JPH11502182A (en)
KR (1) KR19980701992A (en)
CN (1) CN1175237A (en)
AU (1) AU691655B2 (en)
BR (1) BR9510535A (en)
CA (1) CA2213447A1 (en)
DE (1) DE69508439T2 (en)
GB (1) GB9505616D0 (en)
RU (1) RU2134228C1 (en)
WO (1) WO1996029269A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000058190A1 (en) * 1999-03-31 2000-10-05 John Anthony Sullivan Apparatus for feeding sheet material
GB9915989D0 (en) * 1999-07-09 1999-09-08 Sullivan John A Machine combination
CN102649513A (en) * 2012-04-19 2012-08-29 浙江工业大学 Combined type high-speed single-seal separating mechanism
CN102745525B (en) * 2012-07-26 2014-11-26 中华商务联合印刷(广东)有限公司 Automatic control cover feeding device of gluebinding covering machine and gluebinding covering machine
KR101505447B1 (en) * 2014-08-14 2015-03-26 (주)비에프케이 Sheet feeding machine for continuous operation
CN104555510A (en) * 2014-12-22 2015-04-29 重庆市卓玛家具有限公司 Intermittent feeding device for board
CN104924674A (en) * 2015-06-19 2015-09-23 于复湖 Automatic grid insertion machine
EP3515848B1 (en) * 2016-09-22 2023-03-01 Giesecke+Devrient Currency Technology GmbH Method for singling sheet material
DE102017207004A1 (en) * 2017-04-26 2018-10-31 Homag Gmbh Device for separating workpieces
CN109615761B (en) * 2017-09-30 2021-02-19 山东新北洋信息技术股份有限公司 Paper feeding mechanism and paper money processor with same
CN110759138A (en) * 2019-11-08 2020-02-07 浙江云广印业股份有限公司 Paper feeding unit for water-based printing process of paper printed matter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183361B1 (en) * 1984-11-23 1989-09-13 Prime Technology Inc. Improvements in or relating to apparatus and methods for feeding articles such as sheets or boards
US5184811A (en) * 1988-10-13 1993-02-09 Sun Automation, Inc. Method and apparatus for feeding sheets
GB8901055D0 (en) * 1989-01-18 1989-03-15 Simon Container Mach Ltd Apparatus for feeding boards or sheets from a stack
DE69025824T2 (en) * 1989-08-23 1996-09-26 Rengo Co Ltd Paper or cardboard box feeder and its control
GB9300519D0 (en) * 1993-01-13 1993-03-03 Sullivan John A Methods and apparatus for feeding sheet material

Also Published As

Publication number Publication date
RU2134228C1 (en) 1999-08-10
DE69508439T2 (en) 1999-07-08
AU3395895A (en) 1996-10-08
GB9505616D0 (en) 1995-05-10
JPH11502182A (en) 1999-02-23
WO1996029269A1 (en) 1996-09-26
CN1175237A (en) 1998-03-04
MX9707163A (en) 1997-11-29
EP0815045A1 (en) 1998-01-07
DE69508439D1 (en) 1999-04-22
AU691655B2 (en) 1998-05-21
CA2213447A1 (en) 1996-09-26
KR19980701992A (en) 1998-06-25
BR9510535A (en) 1999-06-01

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