CA2213447A1 - Apparatus for feeding sheet material - Google Patents
Apparatus for feeding sheet materialInfo
- Publication number
- CA2213447A1 CA2213447A1 CA002213447A CA2213447A CA2213447A1 CA 2213447 A1 CA2213447 A1 CA 2213447A1 CA 002213447 A CA002213447 A CA 002213447A CA 2213447 A CA2213447 A CA 2213447A CA 2213447 A1 CA2213447 A1 CA 2213447A1
- Authority
- CA
- Canada
- Prior art keywords
- rollers
- sheet
- gate
- lowermost sheet
- rolls
- 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
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
-
- 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
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)
Abstract
There is disclosed apparatus for feeding sheet material comprising a feed table (10) having a gate (11) and upon which the sheets (5) may be stacked against the gate which allows only the lowermost sheet to pass therebeneath, a bed (13) or rollers (14) 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 (12) and means to allow the rollers to free-wheel once the lowermost sheet is being advanced by said take-up rolls.
Description
APPARATUS FOR FEEl~I~G S~ ET MATERL~L
This invention concerns d~aLdLLIs for feeding sheet material, particularly, though by no means exclusively, of corrugated board or card as used in the box and carton m~king 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 mech~ni~m, 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 my co-pending British Patent Application No. 9326089.1, but this 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 a~ dLLIs 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 there~in.~t 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 a~ LIls 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 1 1 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 12byabed 13 of rollers 14withinthesurfaceofthetable.
The rollers are mounted within a chamber 15 to which vacuum suction is applied to pull the lowermost sheet dow,lw~dly there~g~in~t. 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 ofthe 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 19reciprocated by an arm 20 operating in time with line speed (typically that previously used for a kicker me~h~ni~m, facilit~ting easy retro-fitting). On the reverse stroke of the arrn 20 the rollers 14 are not driven in reverse direction since they are then in their free-wheeling 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 continl-ous drive, there will be some slippage between the rear~vard rollers and the next sheet to be fed until the previous sheet has cleared the gate 11.
This invention concerns d~aLdLLIs for feeding sheet material, particularly, though by no means exclusively, of corrugated board or card as used in the box and carton m~king 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 mech~ni~m, 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 my co-pending British Patent Application No. 9326089.1, but this 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 a~ dLLIs 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 there~in.~t 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 a~ LIls 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 1 1 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 12byabed 13 of rollers 14withinthesurfaceofthetable.
The rollers are mounted within a chamber 15 to which vacuum suction is applied to pull the lowermost sheet dow,lw~dly there~g~in~t. 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 ofthe 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 19reciprocated by an arm 20 operating in time with line speed (typically that previously used for a kicker me~h~ni~m, facilit~ting easy retro-fitting). On the reverse stroke of the arrn 20 the rollers 14 are not driven in reverse direction since they are then in their free-wheeling 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 continl-ous drive, there will be some slippage between the rear~vard 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 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.
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 and one is driven by a further drive belt reciprocated by an arm 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.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9505616.4A GB9505616D0 (en) | 1995-03-21 | 1995-03-21 | Apparatus for feeding sheet material |
| GB9505616.4 | 1995-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2213447A1 true CA2213447A1 (en) | 1996-09-26 |
Family
ID=10771520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002213447A Abandoned CA2213447A1 (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)
| 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)
| 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 |
-
1995
- 1995-03-21 GB GBGB9505616.4A patent/GB9505616D0/en active Pending
- 1995-09-05 WO PCT/GB1995/002097 patent/WO1996029269A1/en not_active Application Discontinuation
- 1995-09-05 AU AU33958/95A patent/AU691655B2/en not_active Ceased
- 1995-09-05 EP EP95930641A patent/EP0815045B1/en not_active Expired - Lifetime
- 1995-09-05 CN CN95197545A patent/CN1175237A/en active Pending
- 1995-09-05 JP JP8528151A patent/JPH11502182A/en active Pending
- 1995-09-05 RU RU97117368A patent/RU2134228C1/en active
- 1995-09-05 KR KR1019970705389A patent/KR19980701992A/en not_active IP Right Cessation
- 1995-09-05 DE DE69508439T patent/DE69508439T2/en not_active Expired - Fee Related
- 1995-09-05 CA CA002213447A patent/CA2213447A1/en not_active Abandoned
- 1995-09-05 BR BR9510535A patent/BR9510535A/en not_active Application Discontinuation
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 |
| EP0815045B1 (en) | 1999-03-17 |
| EP0815045A1 (en) | 1998-01-07 |
| DE69508439D1 (en) | 1999-04-22 |
| AU691655B2 (en) | 1998-05-21 |
| KR19980701992A (en) | 1998-06-25 |
| BR9510535A (en) | 1999-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |