WO2001000514A1 - Apparatus for feeding sheet material - Google Patents

Apparatus for feeding sheet material Download PDF

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Publication number
WO2001000514A1
WO2001000514A1 PCT/GB1999/002040 GB9902040W WO0100514A1 WO 2001000514 A1 WO2001000514 A1 WO 2001000514A1 GB 9902040 W GB9902040 W GB 9902040W WO 0100514 A1 WO0100514 A1 WO 0100514A1
Authority
WO
WIPO (PCT)
Prior art keywords
take
sheet
gate
leading edge
servo
Prior art date
Application number
PCT/GB1999/002040
Other languages
French (fr)
Inventor
John Anthony Sullivan
Original Assignee
John Anthony Sullivan
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
Priority to PCT/GB1999/001010 priority Critical patent/WO2000058190A1/en
Application filed by John Anthony Sullivan filed Critical John Anthony Sullivan
Priority to PCT/GB1999/002040 priority patent/WO2001000514A1/en
Priority to AU45243/99A priority patent/AU4524399A/en
Priority to AU34444/00A priority patent/AU3444400A/en
Priority to US09/936,917 priority patent/US6829969B1/en
Priority to AT04004626T priority patent/ATE455066T1/en
Priority to JP2000607906A priority patent/JP2002540041A/en
Priority to GB0117203A priority patent/GB2363603B/en
Priority to EP00912798A priority patent/EP1165418B1/en
Priority to PCT/GB2000/001129 priority patent/WO2000058192A2/en
Priority to DE60043712T priority patent/DE60043712D1/en
Priority to DE60012159T priority patent/DE60012159T2/en
Priority to GB0314403A priority patent/GB2387168B/en
Priority to AT00912798T priority patent/ATE271008T1/en
Priority to ES00912798T priority patent/ES2222187T3/en
Priority to EP04004626A priority patent/EP1424298B1/en
Publication of WO2001000514A1 publication Critical patent/WO2001000514A1/en
Priority to US10/972,998 priority patent/US7192024B2/en
Priority to JP2008008830A priority patent/JP2008143715A/en

Links

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
    • 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
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/18—Modifying or stopping actuation of 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
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/70—Clutches; Couplings
    • B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/512—Marks, e.g. invisible to the human eye; Patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B65H2513/11—Speed angular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/512—Starting; Stopping
    • 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
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge

Definitions

  • This invention concerns apparatus for feeding sheet material, particularly, though by no means exclusively, of corrugated board or card as used in the box and case 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 forwarding means such as a reciprocating vacuum suction cup, feed rollers or a kicker mechanism, to be fed to take-up means such as the nip between take-up rolls or gripper bars for example of a converting machine such as a rotary die cutter.
  • forwarding means such as a reciprocating vacuum suction cup, feed rollers or a kicker mechanism
  • apparatus for feeding sheet material sequentially on demand to processing machinery having a take-up mechanism comprising a feed table having a gate and upon which sheets may be stacked against the gate which allows only the lowermost sheet to pass therebeneath.
  • a servo-motor to advance the lowermost sheet beneath the gate to the take-up mechanism
  • a microprocessor which receives data indicating the position of the take-up mechanism and from the sensing means and programmed to control the servo-motor to ensure that the leading edge of the sheet presents itself to the take-up mechanism at the correct instant.
  • the microprocessor may also be programmed to ensure that the leading edge of the sheet presents itself to the take-up mechanism at a desired speed.
  • the take-up mechanism may comprise a pair of take-up rolls.
  • the desired speed may be slightly less than the speed at which the take-up mechanism forwards the sheet.
  • the take-up mechanism may comprise gripper bars.
  • the desired speed may be zero.
  • the means driven by the servo-motor may comprise a bed of rollers within the surface of the table which are rotatably driven to advance the lowermost sheet beneath the gate to the take-up mechanism when forward drive to the rollers is arrested and means to allow the rollers to free-wheel once the lowermost sheet is being advanced thereover by the take-up mechanism.
  • Figure 1 shows a side elevation of the apparatus
  • Figure 2 shows a cross-section through the apparatus on the line II-II of Figure 1.
  • the apparatus comprises a feed table 10 upon which a stack of sheets S may be placed against a gate 1 1 beneath which only the lowermost sheet in the stack may pass.
  • Successive sheets are advanced beneath the gate 1 1 into the nip of take-up rolls 12 by a bed 13 of rollers 14 within the surface of the table.
  • the take-up rolls 12 forward the successive sheets in timed sequence to processing machinery " such as a rotary die-cutter.
  • the rollers are mounted within a chamber 15 to which vacuum suction is applied to pull the lowermost sheet downwardly thereagainst.
  • the rollers 14 advance the lowermost sheet by being rotatably driven as indicated by the arrows X. Once the sheet is advanced by the rolls 12 drive to the rollers 14 ceases and they are allowed to free-wheel as the sheet is drawn thereover, the rollers 14 having sprag clutches between their inner peripheries and their drive shafts 16. As the next sheet in the stack drops onto the rollers 14 their free-wheeling rotation is arrested.
  • the drive shafts 16 are rotatably interconnected by timing drive belts 17 and one shaft is driven by a timing belt 18 itself driven intermittently in a forward direction only by a servo-electric motor 21 which stops whilst a sheet is being advanced by the take-up rolls 12 and which operates at a timed sequence demanded by the processing machinery.
  • the servo-motor 21 is controlled by a microprocessor 30 which receives data from a pulsed shaft encoder 31 indicating the rotational position of the take-up rolls 12 and also from a sensing means comprising a high speed fibre optic sensor 32 between the gate 1 1 and take-up rolls 12 detecting passage of the leading edge of a sheet being fed.
  • the microprocessor 30 is programmed to control the servo-motor 21 to ensure that the leading edge of each sheet presents itself at the nip between the rolls 12 at precisely the correct instant and at a desired speed.
  • the take-up mechanism might comprise gripper bars when the microprocessor would be programmed to present the leading edge to the gripper bars at the correct instant but at zero speed.
  • vacuum suction might be applied to the sheet in the stack above the sheet being fed to prevent the free-wheeling rollers from displacing that sheet prematurely or means may be provided to brake the free-wheeling rollers as soon as the sheet being fed clears them thus reducing the amount of correction which might otherwise be required by the microprocessor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

There is disclosed apparatus for feeding sheet material sequentially on demand to processing machinery having a take-up mechanism (12) comprising a feed table (10) having a gate (11) and upon which sheets (5) may be stacked against the gate (11) which allows only the lowermost sheet to pass therebeneath, means driven by a servo-motor (21) to advance the lowermost sheet beneath the gate (11) to the take-up mechanism (12), a sensing means (32) between the gate (11) and the take-up mechanism (12) to detect the passage of the leading edge of the sheet, a microprocessor (30) which receives data indicating the position of the take-up mechanism (12) and from the sensing means (32) and programmed to control the servo-motor (21) to ensure that the leading edge of the sheet presents itself to the take-up mechanism (12) at the correct instant.

Description

APPARATUS FOR FEEDING SHEET MATERIAL
This invention concerns apparatus for feeding sheet material, particularly, though by no means exclusively, of corrugated board or card as used in the box and case 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 forwarding means such as a reciprocating vacuum suction cup, feed rollers or a kicker mechanism, to be fed to take-up means such as the nip between take-up rolls or gripper bars for example of a converting machine such as a rotary die cutter.
It is. of course, essential that the leading edge of each sheet is presented to the take-up means at precisely the correct instant in each machine cycle.
To this end prior known sheet feeding apparatus has relied upon the leading edge of each sheet being at a defined position at the commencement of feed. Many factors, including premature movement of a sheet by continuing rotation of feed rollers after the previously fed sheet has cleared them, mechanical tolerances, improper stacking of the sheets on the feed table, sheet quality and even atmospheric conditions can cause the leading edge of a sheet to be displaced from the expected defined position at the commencement of feed.
It is an object of the present invention to provide sheet feeding apparatus which overcomes the difficulties aforesaid. According to the present invention there is provided apparatus for feeding sheet material sequentially on demand to processing machinery having a take-up mechanism comprising a feed table having a gate and upon which sheets may be stacked against the gate which allows only the lowermost sheet to pass therebeneath. means driven by a servo-motor to advance the lowermost sheet beneath the gate to the take-up mechanism, a sensing means between the gate and the take-up mechanism to detect the passage of the leading edge of the sheet, a microprocessor which receives data indicating the position of the take-up mechanism and from the sensing means and programmed to control the servo-motor to ensure that the leading edge of the sheet presents itself to the take-up mechanism at the correct instant.
The microprocessor may also be programmed to ensure that the leading edge of the sheet presents itself to the take-up mechanism at a desired speed.
The take-up mechanism may comprise a pair of take-up rolls.
The desired speed may be slightly less than the speed at which the take-up mechanism forwards the sheet.
The take-up mechanism may comprise gripper bars.
The desired speed may be zero.
The means driven by the servo-motor may comprise a bed of rollers within the surface of the table which are rotatably driven to advance the lowermost sheet beneath the gate to the take-up mechanism when forward drive to the rollers is arrested and means to allow the rollers to free-wheel once the lowermost sheet is being advanced thereover by the take-up mechanism. The invention will be further apparent from the following description with reference to the figures of the accompanying drawings which show, by way of example only, one form of apparatus embodying same.
Of the drawings : -
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 drawings, 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 1 1 beneath which only the lowermost sheet in the stack may pass.
Successive sheets are advanced beneath the gate 1 1 into the nip of take-up rolls 12 by a bed 13 of rollers 14 within the surface of the table. The take-up rolls 12 forward the successive sheets in timed sequence to processing machinery" such as a rotary die-cutter.
The rollers are mounted within a chamber 15 to which vacuum suction is applied to pull the lowermost sheet downwardly thereagainst.
The rollers 14 advance the lowermost sheet by being rotatably driven as indicated by the arrows X. Once the sheet is advanced by the rolls 12 drive to the rollers 14 ceases and they are allowed to free-wheel as the sheet is drawn thereover, the rollers 14 having sprag clutches between their inner peripheries and their drive shafts 16. As the next sheet in the stack drops onto the rollers 14 their free-wheeling rotation is arrested.
The drive shafts 16 are rotatably interconnected by timing drive belts 17 and one shaft is driven by a timing belt 18 itself driven intermittently in a forward direction only by a servo-electric motor 21 which stops whilst a sheet is being advanced by the take-up rolls 12 and which operates at a timed sequence demanded by the processing machinery.
In accordance with the invention the servo-motor 21 is controlled by a microprocessor 30 which receives data from a pulsed shaft encoder 31 indicating the rotational position of the take-up rolls 12 and also from a sensing means comprising a high speed fibre optic sensor 32 between the gate 1 1 and take-up rolls 12 detecting passage of the leading edge of a sheet being fed.
The microprocessor 30 is programmed to control the servo-motor 21 to ensure that the leading edge of each sheet presents itself at the nip between the rolls 12 at precisely the correct instant and at a desired speed.
It will be understood that the exact position of the leading edge of any sheet at the commencement of feed is immaterial, since control is determined from the datum position of the sensor 32.
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 take-up mechanism might comprise gripper bars when the microprocessor would be programmed to present the leading edge to the gripper bars at the correct instant but at zero speed.
Again, for example, vacuum suction might be applied to the sheet in the stack above the sheet being fed to prevent the free-wheeling rollers from displacing that sheet prematurely or means may be provided to brake the free-wheeling rollers as soon as the sheet being fed clears them thus reducing the amount of correction which might otherwise be required by the microprocessor.

Claims

1. Apparatus for feeding sheet material sequentially on demand to processing machinery having a take-up mechanism comprising a feed table having a gate and upon which sheets may be stacked against the gate which allows only the lowermost sheet to pass therebeneath. means driven by a servo-motor to advance the lowermost sheet beneath the gate to the take-up mechanism, a sensing means between the gate and the take-up mechanism to detect the passage of the leading edge of the sheet, a microprocessor which receives data indicating the position of the take-up mechanism and from the sensing means and programmed to control the servo-motor to ensure that the leading edge of the sheet presents itself to the take-up mechanism at the correct instant.
2. Apparatus according to claim 1 wherein the microprocessor is programmed to ensure that the leading edge of the sheet presents itself to the take-up mechanism at a desired speed.
3. Apparatus according to claim 2 wherein the take-up mechanism comprises a pair of take-up rolls.
4. Apparatus according to claim 3 wherein the desired speed is slightly less than the speed at which the take-up mechanism forwards the sheet.
5. Apparatus according to claim 2 wherein the take-up mechanism comprises gripper bars.
6. Apparatus according to claim 5 wherein the desired speed is zero.
7. Apparatus according to any preceding claim wherein the means driven by the servo-motor comprises a bed of rollers within the surface of the table which are rotatably driven to advance the lowermost sheet beneath the gate to the take-up mechanism when forward drive to the rollers is arrested and means to allow the rollers to free-wheel once the lowermost sheet is being advanced thereover by the take-up mechanism.
PCT/GB1999/002040 1999-03-31 1999-06-29 Apparatus for feeding sheet material WO2001000514A1 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
PCT/GB1999/001010 WO2000058190A1 (en) 1999-03-31 1999-03-31 Apparatus for feeding sheet material
PCT/GB1999/002040 WO2001000514A1 (en) 1999-06-29 1999-06-29 Apparatus for feeding sheet material
AU45243/99A AU4524399A (en) 1999-06-29 1999-06-29 Apparatus for feeding sheet material
PCT/GB2000/001129 WO2000058192A2 (en) 1999-03-31 2000-03-24 Sheet material processing
DE60043712T DE60043712D1 (en) 1999-03-31 2000-03-24 Processing of leaf material
AT04004626T ATE455066T1 (en) 1999-03-31 2000-03-24 PROCESSING OF SHEET MATERIAL
JP2000607906A JP2002540041A (en) 1999-03-31 2000-03-24 Processing of sheet material
GB0117203A GB2363603B (en) 1999-03-31 2000-03-24 Sheet material processing
EP00912798A EP1165418B1 (en) 1999-03-31 2000-03-24 Sheet material processing
AU34444/00A AU3444400A (en) 1999-03-31 2000-03-24 Sheet material processing
US09/936,917 US6829969B1 (en) 1999-03-31 2000-03-24 Sheet material processing
DE60012159T DE60012159T2 (en) 1999-03-31 2000-03-24 PROCESSING LEAF MATERIAL
GB0314403A GB2387168B (en) 1999-03-31 2000-03-24 Sheet material processing
AT00912798T ATE271008T1 (en) 1999-03-31 2000-03-24 PROCESSING OF SHEET MATERIAL
ES00912798T ES2222187T3 (en) 1999-03-31 2000-03-24 TREATMENT OF LAMINARY MATERIAL.
EP04004626A EP1424298B1 (en) 1999-03-31 2000-03-24 Sheet material processing
US10/972,998 US7192024B2 (en) 1999-03-31 2004-10-25 Sheet material processing
JP2008008830A JP2008143715A (en) 1999-03-31 2008-01-18 Sheet material processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/GB1999/002040 WO2001000514A1 (en) 1999-06-29 1999-06-29 Apparatus for feeding sheet material

Publications (1)

Publication Number Publication Date
WO2001000514A1 true WO2001000514A1 (en) 2001-01-04

Family

ID=10846768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/002040 WO2001000514A1 (en) 1999-03-31 1999-06-29 Apparatus for feeding sheet material

Country Status (2)

Country Link
AU (1) AU4524399A (en)
WO (1) WO2001000514A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6829969B1 (en) 1999-03-31 2004-12-14 John Anthony Sullivan Sheet material processing
WO2011120456A1 (en) * 2010-08-09 2011-10-06 青岛美光机械有限公司 Servo edge pressing paper transmitter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131273A (en) * 1977-05-13 1978-12-26 Oce-Industries Inc. Record card feeding apparatus
EP0414157A2 (en) * 1989-08-23 1991-02-27 Rengo Co., Ltd. Blank feeder and method for controlling the same
DE4329124A1 (en) * 1993-08-30 1995-03-02 Heidelberger Druckmasch Ag Apparatus for supplying sheets in a feeder of a printing machine
GB2290074A (en) * 1994-06-07 1995-12-13 Gd Spa Blank feed unit
WO1997011017A1 (en) * 1995-09-18 1997-03-27 Rapidex Sm Sheet feeding device for a sheet processing line
DE19640963A1 (en) * 1996-10-04 1998-04-16 Wolfgang Heiber Preform feed mechanism for cartons

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131273A (en) * 1977-05-13 1978-12-26 Oce-Industries Inc. Record card feeding apparatus
EP0414157A2 (en) * 1989-08-23 1991-02-27 Rengo Co., Ltd. Blank feeder and method for controlling the same
DE4329124A1 (en) * 1993-08-30 1995-03-02 Heidelberger Druckmasch Ag Apparatus for supplying sheets in a feeder of a printing machine
GB2290074A (en) * 1994-06-07 1995-12-13 Gd Spa Blank feed unit
WO1997011017A1 (en) * 1995-09-18 1997-03-27 Rapidex Sm Sheet feeding device for a sheet processing line
DE19640963A1 (en) * 1996-10-04 1998-04-16 Wolfgang Heiber Preform feed mechanism for cartons

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6829969B1 (en) 1999-03-31 2004-12-14 John Anthony Sullivan Sheet material processing
US7192024B2 (en) 1999-03-31 2007-03-20 John Anthony Sullivan Sheet material processing
WO2011120456A1 (en) * 2010-08-09 2011-10-06 青岛美光机械有限公司 Servo edge pressing paper transmitter
US8770574B2 (en) 2010-08-09 2014-07-08 Qingdao Meiguang Machinery Co., Ltd. Servo edge pressing paper feeding device

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Publication number Publication date
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