FI131386B1 - Feeding arrangement for boards - Google Patents
Feeding arrangement for boards Download PDFInfo
- Publication number
- FI131386B1 FI131386B1 FI20226150A FI20226150A FI131386B1 FI 131386 B1 FI131386 B1 FI 131386B1 FI 20226150 A FI20226150 A FI 20226150A FI 20226150 A FI20226150 A FI 20226150A FI 131386 B1 FI131386 B1 FI 131386B1
- Authority
- FI
- Finland
- Prior art keywords
- feeding
- board
- unit
- feeding unit
- stack
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G59/00—De-stacking of articles
- B65G59/02—De-stacking from the top of the stack
- B65G59/026—De-stacking from the top of the stack with a stepwise upward movement of the stack
-
- 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
- B65H3/40—Separating articles from piles by two or more separators acting alternately on the same 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
- B65H3/0615—Rollers or like rotary separators reciprocating and rotatable in one direction only
-
- 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
-
- 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
- B65H3/24—Separating articles from piles by pushers engaging the edges of the articles
-
- 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
- B65H3/36—Separating articles from piles by separators moved in special paths, e.g. enclosing an area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/02—Articles
- B65G2201/0214—Articles of special size, shape or weigh
- B65G2201/022—Flat
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
A feeding arrangement (1) for feeding boards (2) from a board stack (3) in a feeding direction (9). The feeding arrangement (1) comprises at least a first reciprocating feeding unit (7) and a second reciprocating feeding unit (10) configured to alternately feed boards (2) from the board stack (3) in the feeding direction (9).
Description
FEEDING ARRANGEMENT FOR BOARDS
The invention relates to a feeding arrange- ment for feeding boards, such as particle boards, OSB boards and/or MDF boards, from a board stack to a con- veyor and along the conveyor forward in a feeding dir- ection. The invention also relates to a method of feeding boards.
When manufacturing wood-based boards, the boards are often stacked and fed from the board stack one by one to a subsequent processing step or unit.
The boards are typically unstacked so that the upper- most board on the board stack is fed to a conveyor and along the conveyor towards the processing unit by a feeding unit. Thereafter, the feeding unit returns to the board stack and feeds the next board from the board stack to the conveyor and along the conveyor to- wards the processing unit, and so on. The feeding unit thus moves back and forth above the board stack and the conveyor. The feeding unit may comprise a pusher
N that pushes the board to be fed from the trailing edge
N or a wheel that is placed against a top surface of the board to be fed. The rotation of the wheel is preven-
N 30 ted in the in the feeding direction of the board and
E allowed in the opposite direction. oO
O The drawback of the above-described feeding
A arrangement is that it is not possible to feed boards
N 35 from the board stack during the return motion of the feeding unit, which limits the cycle time of the feed-
ing arrangement. However, increased board manufactur- ing line speeds, especially when thin boards are manu- factured, and relatively short board lengths would re- guire shorter feeding cycle times.
An object of the present invention is to provide a feeding arrangement and a feeding method by which the above-mentioned drawbacks can be reduced.
The object according to the invention may be achieved by a feeding arrangement according to claim 1. The feeding arrangement according to the invention is configured to feed boards from a board stack for- ward in a feeding direction. The feeding arrangement comprises at least a first reciprocating feeding unit and a second reciprocating feeding unit configured to alternately feed boards from the board stack in the feeding direction.
The invention offers many advantages. The cycle time of the board feeding arrangement can be significantly reduced since one feeding unit may begin its feeding motion during the return motion of another feeding unit or almost immediately after the preceding board has been fed from the board stack to the con-
N veyor by another feeding unit.
N
N
TT 30
E
Oo In the following, the invention is described in more = detail by way of examples with reference to the ac-
N 35 companying drawings, in which
N
Fig. 1 and 2 show, as a side view, a feeding arrange- ment according to an embodiment of the invention,
Fig. 3 shows, as a top view, the feeding arrangement of fig. 1,
Fig. 4 shows, as a perspective view, the feeding ar- rangement of fig. 1.
The drawings show a feeding arrangement 1 ac- cording to an embodiment of the invention. The feeding arrangement 1 may be used in a factory manufacturing wood-based boards 2, such as OSB (Oriented Strand
Boards), MDF (Medium Density Fibreboards) or particle boards, for feeding the boards 2 from a board stack 3 in a feeding direction 9. The feeding arrangement 1 is configured to feed the boards 2 from the board stack 3 one by one. The boards 2 may be fed from the board stack 3 to or towards a processing step or unit 4, such as a sanding unit, stacking unit, painting unit, milling unit, measuring unit, marking unit, machining unit or visual inspection unit. Typically, the width of the boards 2 is 1.8-3.6 m and the length is 5-9 m.
N Alternatively, the boards 2 may be smaller in size,
S typically 1.22 m X 2.44 m (4 X 8 feet) or 1.52 m X
AN 2.74 m (5 X 9 feet).
N 30
N The feeding arrangement 1 may comprise a con-
E veyor 5 for receiving boards 2 from the board stack 3. o The conveyor 5 may be a roll conveyor comprising ro- = tatable rolls on which the board 2 to be fed is moved
N 35 in the feeding direction 9. The processing unit 4 or
N an end of the conveyor 5 may be arranged next to the board stack 3. The second end of the conveyor 5 may be arranged next to the processing unit. In the embodi- ment shown in the drawings the processing unit 4 has been placed next to the board stack 3.
The feeding arrangement 1 may comprise a lifting platform 11, on which the board stack 3 is placed. The board stack 3 is lifted by the lifting platform during the feeding of the boards 2 so that the uppermost board 2 in the board stack 3 remains at a constant height.
The feeding arrangement 1 further comprises at least two reciprocating feeding units 7,10, i.e. at least a first feeding unit 7 and a second feeding unit 10. The feeding units 7,10 are configured to altern- ately feed boards 2 from the board stack 3 in a feed- ing direction 9, i.e. towards or to the processing unit 4. The first feeding unit 7 and the second feed- ing units 10 are arranged to move in opposite direc- tions so that when one feeding unit feeds the board 2 in the feeding direction 9, the other feeding unit is simultaneously moved in the opposite direction with respect to the feeding direction 9, i.e. away from the processing unit 4, to be ready to feed the next board 2 from the board stack 3. The feeding units 7,10 are movable independently of each other.
N The feeding units 7,10 are configured to feed
N the boards 2 one by one from the board stack 3. The = 30 first feeding unit 7 and the second feeding unit 10
N are configured to reciprocate in the feeding direction = 9 of the boards 2. The first feeding unit 7 and the - second feeding unit 10 are configured to reciprocate
O above the board stack 3. The feeding units 7,10 are
A 35 arranged to feed, e.g. push, the uppermost board 2 in
Q the board stack 3 in the feeding direction 9 towards or to the processing unit 4. The feeding arrangement 1 shown in the drawings comprises two feeding units, but alternatively it may comprise three or more feed- ing units configured to alternately feed the boards 2 from the board stack 3 in the feeding direction 9. 5
The feeding units 7,10 comprise feeding mem- bers 8 arranged to be placed against the surface of the board 2 to be fed, e.g. against the top surface and/or the trailing edge of the board 2. The feeding members 8 are configured to feed, e.g. push, the board 2 from the board stack 3 in the feeding direction 9.
The feeding members 8 may comprise vacuum elements for applying suction to the top surface of the board 2 to be fed.
The feeding members 8 of the feeding units 7,10 are arranged at different points in the trans- verse direction, which is perpendicular to the feeding direction 9, to prevent the feeding members 8 from touching each other when the feeding units are moved in the opposite directions. The first feeding unit 7 may comprise a feeding member 8 configured to be placed against the surface of the board 2 at a centre line of the board 2. The centre line is parallel to feeding direction 9 of the board 2. The second feeding unit 10 may comprise two feeding members 8 configured to be placed against the surface of the board 2 on
N both sides of the centre line, typically at equal dis-
N tances from the centre line. Alternatively, the first = 30 feeding unit 7 may comprise two feeding members 8 con-
N figured to be placed against the surface of the board = 2 on both sides of the centre line, typically at equal - distances from the centre line.
O
A 35 The feeding members 8 of the first feeding
Q unit 7 and the second feeding unit 10 may comprise a wheel that is placed against the top surface of the board 2. Rotation of the wheel is prevented in the feeding direction 9 of the board 2 and allowed in the opposite direction. Alternatively, the feeding members 8 may comprise a pusher that is placed against the trailing edge and/or top surface of the board 2 to be fed.
In one embodiment of the invention, the feed- ing members 8 of the feeding units 7, 10 are capable of being placed or arranged to be placed against the top surface and/or the trailing edge of a second top- most board of the board stack 3 simultaneously as the topmost board of the board stack 3 is partially on said second topmost board and being fed from the board stack 3 in the feeding direction 9 towards the pro- cessing unit 4.
The feeding arrangement 1 comprises a frame 12, on which the first feeding unit 7 and the second feeding unit 10 are mounted. The feeding units 7, 10 are mounted above the lifting platform 11. The feeding units 7, 10 may comprise rails 13 extending in the feeding direction 9. The feeding members 8 are mounted on and arranged to move along the rails 13. The feed- ing units 7, 10 may comprise a separate rail for each feeding member 8. The feeding units 7, 10 further com- prise drive motors configured to move the feeding mem-
N bers 8 along the rails 13. The frame 12 may comprise
N transverse bars 12.1, to which the rails 13 are at- = 30 tached. The feeding arrangement 1 further comprises a
N control unit configured to operate the feeding units z 7,10. a
D The feeding arrangement 1 may further com-
N 35 prise a stopper 14 configured to prevent the double
N feeding of the boards 2 from the board stack 3. The stopper 14 is placed at a height where only the top-
most board 2 of the board stack 3 is allowed to pass over the stopper 14 at a time. Simultaneously, the stopper 14 prevents the feeding of the second topmost board 2 from the board stack 3. The stopper 14 may be attached to the frame 12. The stopper 14 is placed on the side of the leading edge of the boards 2.
The feeding units 7, 10 may comprise pneu- matic actuators for moving the feeding members 8 ver- tically. This enables the lifting platform 11 to be lifted at the same time as the feeding member 8 is po- sitioned against the top surface of the board 2.
The feeding arrangement 1 is operated as fol- lows. The uppermost board 2 in the board stack 3 is fed, i.e. pushed, from the board stack 3 forward in the feeding direction 9, i.e. towards the processing unit 4, by the first feeding unit 7. Simultaneously, the second feeding unit 10 is moved in the opposite direction with respect to the feeding direction 9 to be ready to feed the next board 2 from the board stack 3. When the feeding movement of the first feeding unit 7 in the feeding direction 9 unit has been completed, the first feeding unit 7 is moved in the opposite dir- ection with respect to the feeding direction 9 to be ready to feed the next board 2 from the board stack 3.
Simultaneously, the uppermost board 2 in the board
N stack 3 is fed, e.g. pushed, from the board stack 3 in
N the feeding direction 9 towards the processing unit 4 = 30 by the second feeding unit 10.
N
= When the feeding movement of the second feed- - ing unit 10 has been completed, the second feeding
O unit 10 is moved in the opposite direction with re-
A 35 spect to the feeding direction 9 to be ready to feed
Q the next board 2 from the board stack 3. Simultan- eously, the uppermost board 2 of the board stack 3 is fed in the feeding direction 9 towards the processing unit 4by the first feeding unit 7, etc. Thus, the boards 2 are fed from board stack 3 in the feeding direction 9 alternately by the first feeding unit 7 and the second feeding unit 10.
If the feeding arrangement 1 comprises three or more feeding units, the boards 2 are fed from the board stack 3 in the feeding direction 9 alternately by the feeding units.
If the feeding members 8 of the feeding units comprise wheels, the wheels are placed against the top surface of the board 2 to be fed. The board 2 is fed, e.g. pushed, forward in the feeding direction 9 using friction force induced by vertical pressing force of the wheels.
If the feeding members 8 comprise pushers, the pushers are placed against the trailing edge and/or top surface of the board 2 to be fed, and the board 2 is fed, e.g. pushed, forward in the feeding direction 9.
In one embodiment of the invention, the feed- ing member(s) 8 of the feeding unit 7, 10 is/are placed against the top surface and/or the trailing
N edge of a second topmost board of the board stack 3
N simultaneously as the topmost board of the board stack = 30 3 is partially on said second topmost board and being
N fed from the board stack 3 in the feeding direction 9.
E o It is obvious to a person skilled in the art
O that with the advancement of technology, the basic
A 35 idea of the invention may be implemented in various
Q ways. The invention and its embodiments are thus not limited to the examples described above, instead they may vary within the scope of the claims.
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Claims (12)
1. A feeding arrangement (1) for feeding boards (2) from a board stack (3) in a feeding direction (9), the feeding arrangement (1) comprising at least a first reciprocating feeding unit (7) and a second reciprocat- ing feeding unit (10) configured to alternately feed boards (2) from the board stack (3) in the feeding di- rection (9), characterized in that the first feeding unit (7) and the second feeding unit (10) comprise at least one feeding member (8) configured to push the board (2) from the board stack (3) in the feeding di- rection (9), the feeding members (8) of the first feed- ing unit (7) and the second feeding unit (10) are con- figured to be placed against a top surface and a trailing edge of the board (2) to be fed, and the feeding mem- ber (s) (8) of the feeding unit (7, 10) is/are configured to be placed against the top surface and the trailing edge of a second topmost board of the board stack (3) simultaneously as the topmost board of the board stack (3) is partially on said second topmost board and being fed from the board stack (3) in the feeding direction
(9).
2. The feeding arrangement (1) according to claim 1, characterized in that the first feeding unit (7) and the second feeding unit (10) are configured to < feed the boards (2) one by one from the board stack (3) S in the feeding direction (9). N o 30
3. The feeding arrangement (1) according to - claim 1 or 2, characterized in that the first feeding E unit (7) and the second feeding unit (10) are arranged 2 to move in opposite directions so that when one feeding o unit (7,10) feeds the board (2) in the feeding direction N 35 (9), the other feeding unit (7,10) is simultaneously N moved in an opposite direction to be ready to feed the next board (2) from the board stack (3).
4. The feeding arrangement (1) according to claim 1, characterized in that the feeding members (8) of the first feeding unit (7) and the second feeding unit (10) are configured to be pressed against a top surface of the board (2) and to move, e.g. push, the board (2) in the feed direction (9) using friction force induced by vertical pressing force of the feeding mem- bers (8).
5. The feeding arrangement (1) according to claim 1 or 4, characterized in that the feeding members (8) of the first feeding unit (7) and the second feeding unit (10) comprise a vacuum element for applying suction to a top surface of the board (2).
6. The feeding arrangement (1) according to any of the preceding claims, characterized in that the first feeding unit (7) comprises a feeding member (8) arranged to be placed against the surface of the board (2) at a centre line of the board (2), the centre line being parallel to the feeding direction (9) of the board (2), and the second feeding unit (10) comprises two feeding members (8) arranged to be placed against the surface of the board (2) on both sides of the centre line.
7. The feeding arrangement (1) according to any S of preceding claims 1-5, characterized in that the first & feeding unit (7) comprises two feeding members (8) ar- N 30 ranged to be placed against the surface of the board (2) 2 on both sides of the centre line of the board (2), the z centre line being parallel to the feeding direction (9) > of the board (2), and the second feeding unit (10) com- D prises two feeding members (8) arranged to be placed O 35 against the surface of the board (2) on both sides of O the centre line.
8. The feeding arrangement (1) according to any of preceding claims 1 or 4-7, characterized in that the feeding members (8) of the first feeding unit (7) and the second feeding unit (10) comprise a wheel configured to be placed against a top surface of the board (2), rotation of the wheel being prevented in the feeding direction (9) and allowed in the opposite direction.
9. The feeding arrangement (1) according to any of preceding claims 1 or 4-7, characterized in that the feeding members (8) of the first feeding unit (7) and the second feeding unit (10) comprise a pusher config- ured to be placed against a trailing edge of the board (2) to be fed.
10. The feeding arrangement (1) according to any of the preceding claims, characterized in that the feeding arrangement (1) comprises a stopper (14) con- figured to prevent the double feeding of the boards (2) from the board stack (3).
11. A method of feeding boards (2) from a board stack (3) using a feeding arrangement (1) according to any of the preceding claims, in which method the boards (2) are fed from the board stack (3) in a feeding di- rection (9) alternately by at least a first feeding unit (7) and a second feeding unit (10), characterized in a that the boards (2) are pushed from the board stack in & the feeding direction (9) by at least the first feeding N 30 unit (7) and the second feeding unit (10), the first 2 feeding unit (7) and the second feeding unit (10) com- z prise feeding members (8) that are placed against a top > surface and a trailing edge of the board (2) to be fed, > and the feeding member(s) (8) of the feeding unit (7, o 35 10) is/are placed against the top surface and the trail- O ing edge of a second topmost board of the board stack (3) simultaneously as the topmost board of the board stack (3) is partially on said second topmost board and being fed from the board stack (3) in the feeding di- rection (9).
12. The method according to claim 11, charac- terized in that the boards (2) are fed one by one from the board stack (3) in the feeding direction (9). <t N O N N » O I a a O O © N N O N
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20226150A FI131386B1 (en) | 2022-12-22 | 2022-12-22 | Feeding arrangement for boards |
| PCT/FI2023/050696 WO2024134019A1 (en) | 2022-12-22 | 2023-12-14 | Feeding arrangement for boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20226150A FI131386B1 (en) | 2022-12-22 | 2022-12-22 | Feeding arrangement for boards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI20226150A1 FI20226150A1 (en) | 2024-06-23 |
| FI131386B1 true FI131386B1 (en) | 2025-03-19 |
Family
ID=89308691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI20226150A FI131386B1 (en) | 2022-12-22 | 2022-12-22 | Feeding arrangement for boards |
Country Status (2)
| Country | Link |
|---|---|
| FI (1) | FI131386B1 (en) |
| WO (1) | WO2024134019A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3737034A (en) * | 1971-10-06 | 1973-06-05 | Broyhill Furniture Ind | Lumber unstacking apparatus |
| IT1161347B (en) * | 1978-05-12 | 1987-03-18 | Capretti Pietro | EQUIPMENT FOR THE FAST MOVEMENT OF PIECES, IN PARTICULAR OF FLAT BODIES TO BE STACKED OR DECATASTED OR TO BE LOADED OR UNLOADED ON MACHINES, PLANTS, PRODUCTION LINES AND SIMILAR |
| DE3026613C2 (en) * | 1980-07-14 | 1984-12-06 | Dimter GmbH Maschinenfabrik, 7918 Illertissen | Device for destacking stacks of boards |
| DE10053312A1 (en) * | 2000-10-27 | 2002-05-16 | Tombers Dietmar | Method for destacking planks with transverse spacers comprises lift platform which lifts them above retaining plate near one edge, transporter plate mounted on endless chain moving uppermost planks on to conveyor |
-
2022
- 2022-12-22 FI FI20226150A patent/FI131386B1/en active
-
2023
- 2023-12-14 WO PCT/FI2023/050696 patent/WO2024134019A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024134019A1 (en) | 2024-06-27 |
| FI20226150A1 (en) | 2024-06-23 |
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