US3887082A - System for handling surface-finishing layers in the production of pressed board - Google Patents

System for handling surface-finishing layers in the production of pressed board Download PDF

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Publication number
US3887082A
US3887082A US336734A US33673473A US3887082A US 3887082 A US3887082 A US 3887082A US 336734 A US336734 A US 336734A US 33673473 A US33673473 A US 33673473A US 3887082 A US3887082 A US 3887082A
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United States
Prior art keywords
stack
support
location
clamps
axle
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Expired - Lifetime
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US336734A
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English (en)
Inventor
Manfred Posselt
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.)
Siempelkamp Giesserei KG
G Siempelkamp GmbH and Co KG
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Siempelkamp Giesserei KG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/28—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from mechanical grippers

Definitions

  • ABSTRACT A mechanism for manipulating cover layers for pressed board in which a carriage is shiftable along a track above a transport path for the layers and entrains a movable support therealong and at least two clamps carried by the support and engageable with opposite edges of the cover layers.
  • the clamps each comprise a fixed jaw, preferably of wood, mounted upon the support and a swingable jaw, preferably also of wood, adapted to engage the cover layers from below and retain them against the respective fixed 2 Claims, 11 Drawing Figures m5; w nd-am 3 I975 3,887,082
  • FIG.7 FIG.8 FIG.9
  • My present invention relates to a mechanism for manipulating cover layers for application to a pressedboard body and, more particularly, to a system for applying cover layers to a mat, prepressed layer or other body in order to improve the surface characteristics thereof after a final pressing operation.
  • the resistance of the pressed board to moisture penetration may be improved by applying a moisture barrier, a sealing layer, or some other foil, web or sheet impermeable to moisture onto the unpressed mat of loosely coherent fiber materials, to a prepressed mat of such material or even to a fully com pressed bonded mat.
  • the surface-finishing layer is then laminated to the substrate, generally under heat and pressure.
  • the pressed board is to have a predetermined texture different from that of the pressed wood fibers
  • a decorative or texturing layer e.g., of paper printed with the desired pattern
  • cover the printed layer with a finishing layer which is transparent and impervious to moisture.
  • the decorative or texturing layer may also be a metal foil, a metallized-paper foil or the like which itself is impervious to moisture.
  • surface-finishing layers are generally applied under pressure in a final pressing step, frequently together with the application of heat, to bond the surface-finishing layers to one another and to the substrate which may have been preformed or is rendered coherent by the pressing operation during which the foils, webs, sheets or layers are bonded to one another and to the substrate.
  • the pressed board may be composed of wood fibers, chips or dust, of cellulosic fibers or of fibers obtained as waste products from the treatment of agricultural residues or the like and may be bonded under heat and pressure using naturally occurring thermoplastic and thermosetting resins or thermosetting resins which are added to the mass during a mat-forming operation.
  • a typical example of pressed board is a layer of wood fibers to which a phenol-formaldehyde, urea, resorcinol or like thermosetting binder is added.
  • the particulate mass and the binder may be applied to a conveyor belt in the layer-forming step, or the fibers may be formed upon charging trays adapted to carry the layer into a platen press.
  • conveyor tablets When the layer is formed upon a conveyor-belt system, so-called conveyor tablets may be used to dispose the mats one above the other for simultaneous charging of a multiplaten press therewith.
  • the mats may be shaped and separated from one another and may even be subjected to prepressing, e.g., in a sin gle-platen press, before being ultimately charged into the multiplaten press.
  • the surface-finishing layers described above may be applied at any point to the mat and may pass with this mat into a multiplaten press of the heated-platen type for final bonding of the body into a rigid. structurally strong sheet.
  • the finished sheet may have a wide range of densities, depending upon the temperature and pressure of the final pressing step and the proportion of binder added and the ultimate use of the sheet will depend upon the density and like factors. For example, when the finished sheet is to have maximum thermal and acoustical insulation characteristics, it will generally be less dense and more porous. Where the sheet is to have greater rigidity and hardness, it will usually be more dense.
  • a moisture-barrier layer generally referred to simply as a barrier layer or barrier paper
  • a decorative layer or paper supplying the desired aesthetic pattern
  • a final or protective layer or paper generally described as an overlay paper
  • Another object of the invention is to provide a mechanism for the purpose set forth in which the amount of manual labor can be reduced.
  • the clamping means is adapted to straddle opposite sides of the table which is of a smaller outline than the stack of surface-finishing layers deposited thereon by any conventional collating means.
  • the clamping means preferably comprises a fixed jaw mounted on the support and disposed inwardly of the longitudinal edges of the layer stack or the rectangular plan thereof while the otherjaw of each clamp is swingable relative to the support, preferably about a horizontal axis parallel to the aforementioned longitudinal edges to enable the lower jaw to clear the longitudinal edge of the lower stack when the support is lowered.
  • the clamping means also comprises means for shifting the lower jaw perpendicularly to its longitudinal direction, i.e., in a direction which is transverse to the longitudinal edge so that each lower jaw bears upon the respective marginal portion of the layer step from beneath and clampingly retains it against the upper jaw.
  • the invention is based upon the recognition that stacks of a number of the aforementioned papers can, with the use of the aforementioned clamping means. be manipulated, i.e., lifted, transported and lowered, without difficulty and without the disadvan tage of individual-sheet manipulation as has hitherto been necessary by reason of the use of suction devices or the like.
  • the system has been found to be most advantageous where each of the clamping jaws is a bar extending over a substantial portion and preferably the entire length of the longitudinal edges of the stack.
  • the clamping force should be so adjusted that the surface'finishing layers are not damaged and I have found that when the clamping bars are formed from wood, a wide range of clamping pressures may be applied without damage to the foils.
  • the swinging displacement of the movable clamp jaw ensures that the movable jaw will Clear the longitudinal edges of the foil stack and consequently not engage the latter when the support is lowered.
  • some other force absorbing or cushioning member e.g., of foam rubber, may be applied to the engaging faces of the jaws or may constitute the latter.
  • FIG. I is a diagrammatic side-elevational view of an apparatus, according to the present invention. about to pick up a stack of surface-finishing Sheets;
  • FIG. 2 is a bottom view of the apparatus, showing the table in broken lines;
  • FIG. 3 is a view similar to FIG. 1 illustrating the stack in its elevated position prior to movement onto a conveyor tablet;
  • FIG. 4 is a view similar to FIG. 1 showing the stack of about to be deposited upon a conveyor tablet according to the present invention
  • FIG. 5 is a cross-sectional view through a portion of a board, about to be pressed, as it is disposed upon a press-charging plate;
  • FIG. 6 is a view similar to FIG. 5 illustrating another arrangement
  • FIG. 7 is a detail view, drawn to an enlarged scale for an apparatus for swinging the movable clamp means of FIGS. 1-4;
  • FIGS. 8 and 9 are respectively a front and a side elevational view showing the clamping members, partly in cross-section.
  • FIG. 10 is a detail view illustrating the means for vertically displacing the supports in FIGS. 1 4;
  • FIG. 11 is a detail view of a conveyor tablet adapted to deposit the stack of foils, sheets or layers onto a mat which, in turn, deposits the mat between the platens of a multiplaten press.
  • FIGS. 5 and 6 it will be seen that the present invention relates to the manipulation of stacks 24 or 34 of surface-finishing papers, sheets, foils or layers which can be applied to the upper or lower surface of wood-fiber, wood-chip or sawdust mat or layer as represented at 20 or 30.
  • the layers may include an inner moisture-barrier layer of metal foil or synthetic resin, the underside of which may be coated with a thermally activatable adhesive or which may be bonded by the binder of wood mat to the latter.
  • the moisture barrier layer is represented at 21 and 31 in FIGS. 5 and 6.
  • a transparent protective layer 23, 33 which is exposed to the elements and may consist ofa syntheticresin resistant to attack by weathering and serving to prevent abrasion of the decorative paper therebelow.
  • the decorative web may include a thermally activated adhesive
  • the transparent protective layer 23, 33 may include such a material, or a separate adhesive layer may be provided between the two.
  • the stack 1 of surfacefinishing layers (FIGS. 5 and 6) for the production of decorative chipboard, fiberboard and the like, is collated upon a table 4 of a width less than the width of the stack so that the stack overhangs the table 4 (FIG. I).
  • the apparatus comprises a carriage 2 which is shiftable along a track 6 and is provided with means (FIG. I0) for vertically raising or lowering the support 3 of the pickup device which has a rectangular outline as illustrated in FIG. 2.
  • the pickup device can be shifted transversely (compare FIGS. 3 and 4) to lift the stack from the table 4 and to deposit it upon a conveyor tablet 5 designed to deposit the material in a press (see FIG. 11).
  • the pickup device 3 comprises a pair of clamping jaws or bars 7, 8 along each longitudinal edge of the table 4, the clamps comprising bars 7 of wood fixed to the underside of the support and lying outwardly of the outline of the table 4 for juxtaposition with the longitudinal edges 9 of the stack overhanging this table.
  • the jaw 8 is swingable upon lowering of the support 3, in the counterclockwise sense and in the clockwise sense for the left-and right-hand jaws respectively to being the movable jaws 8 directly beneath the marginal portions 9 of the stack (see FIG. 3).
  • the pneumatic cylinders 10 connected to the jaws 8 may thus be operated to draw the jaws 8 upwardly and clamp the marginal portion of the stack between each jaw 8 and the juxtaposed jaw 7.
  • FIG. 7 I show an arrangement in which the cylinders for vertically shifting the jaws 8 are mounted upon a shaft 41 which is rotatable in trunions anchored to the support 3.
  • An arm 42 is keyed to the shaft 41 and is displaceable by a further pneumatic cylinder 45, pivoted at 46 to the support and having a piston rod 44 articulated at 43 to arm 42.
  • the jaw 8 may be swung away from the stack 24 to clear the latter whenever the support 3 is raised and lowered.
  • the jaws 8 may be carried by L-shaped supports 53 mounted on the ends of piston rods 52 which are axially shiftable in cylinders 51 mounted by collars 50 of each shaft 41, 41a extending horizontally between the culinders 51.
  • Members 51, 52, etc. represent the pneumatic devices shown diagrammatically in FIGS. 1 4.
  • FIG. 10 moreover. it can be seen that the carriage 2 is provided with a pair of pneumatic cylinders 60 whose piston rods 61 bear upon a plate 62 attached to an upright 63 carrying the support 3.
  • FIG. 11 shows a multiplaten press 70 into which the conveyor tablet 5 can be introduced (dot-dash lines) to deposit the mat and the stack 24 carried thereon for final pressing, the conveyor tablet being withdrawn during deposit of the laminate on the press platen.
  • a stack of surface-finishing sheets is co]- lated upon the table 4 until the desired number is provided, whereupon the support 3 is lowered via cylinder 60 until the upper surface of the stack, here represented generally at I. Since the jaws 8 are in their outwardly swung positions during lowering of support 3, they do not engage the marginal portions 9 of the stacks. By actuations of pistons 45, however, the jaws 8 are swung inwardly to underlie the marginal portions 9, whereupon pistons 10 (see also FIGS. 8 and 9) are actuated to lift the jaws 8 and grip the marginal portions 9 between each pair ofjaws 7, 8. The support 3 is thereupon lifted (FIG.
  • a system for the manipulation of a stack of surface-finishing layers applicable to a substrate in the formation of pressed board comprising:
  • horizontal track means extending from said table to a location horizontally spaced therefrom;
  • each of said clamps each having a pair of relatively movable clamp jaws engageable with said overhanging edges of said stack on said table for displacement of said stack to said location, each of said clamps having a fixed jaw on said support and having a movable jaw swingable about a horizontal axis parallel to the overhanging edges of said stack, said fixed jaws lying in a common horizontal plane, a respective axle defining each of said axes and journaled on said support, a first fluid responsive device on said support for rotating each axle, and a second fluid-responsive device on each axle and carrying the respective movable jaw for shifting said movable jaw transversely and relative to the respective axle, said jaws each extending the full length of said stack; and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Specific Conveyance Elements (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US336734A 1972-03-01 1973-02-28 System for handling surface-finishing layers in the production of pressed board Expired - Lifetime US3887082A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2209691A DE2209691C3 (de) 1972-03-01 1972-03-01 Vorrichtung zum Manipulieren von Vergii tungsauflagen

Publications (1)

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US3887082A true US3887082A (en) 1975-06-03

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US (1) US3887082A (xx)
JP (1) JPS4899856A (xx)
AT (1) AT328711B (xx)
BE (1) BE795685A (xx)
DE (1) DE2209691C3 (xx)
FI (1) FI54695C (xx)
FR (1) FR2173995B1 (xx)
IT (1) IT979573B (xx)
SE (1) SE393090B (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977535A (en) * 1973-12-21 1976-08-31 G. Siempelkamp & Co. Apparatus for loading a workpiece stack into a platen press
US3987917A (en) * 1973-12-21 1976-10-26 G. Siempelkamp & Co. Method of loading a workpiece stack into a platen press
US3989145A (en) * 1975-01-20 1976-11-02 The Firestone Tire & Rubber Company Core transfer apparatus
US4042120A (en) * 1974-09-17 1977-08-16 Ausatuft S.P.A. Machine for stripping from frames, particularly pin frames, materials restrained to said frames
US4400841A (en) * 1981-02-26 1983-08-30 Libbey-Owens-Ford Company Apparatus and method for handling sheet material
US4799426A (en) * 1986-09-02 1989-01-24 Danieli & C. Officine Meccaniche Spa System and method for moving skips and pressing scrap in a skip
US5630695A (en) * 1995-09-14 1997-05-20 Flomat Pty Ltd Pallet sorting machine
US9876217B2 (en) 2011-04-07 2018-01-23 Nissan Motor Co., Ltd. Battery electrode manufacturing apparatus and method thereof
CN108482774A (zh) * 2018-03-28 2018-09-04 泉州市创达机械制造有限公司 一种湿巾自动堆叠装置
US20210257653A1 (en) * 2020-02-14 2021-08-19 Toyota Jidosha Kabushiki Kaisha Stacking apparatus and stacking method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0535949Y2 (xx) * 1986-07-07 1993-09-10
DE3918639A1 (de) * 1989-06-08 1990-12-13 Franco Toss Klemmvorrichtung zum halten und/oder transportieren von gegenstaenden
DE4203118C2 (de) * 1991-11-07 2003-06-12 Windmoeller & Hoelscher Vorrichtung zum Ergreifen und Transportieren von Stapeln flacher Gegenstände
AT640U1 (de) * 1993-10-22 1996-02-26 Sez Semiconduct Equip Zubehoer Greifer für halbleiterwafer und andere scheibenförmige gegenstände
DE19514394C2 (de) * 1995-04-19 2002-12-19 Kg Schneider Senator Verkaufs Vorrichtung zum Transportieren von Blattgutstapeln
FR3097213B1 (fr) * 2019-06-11 2021-05-21 Nexter Systems Dispositif de manutention d'un panneau rigide et procédé de manutention utilisant un tel dispositif

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US113799A (en) * 1871-04-18 Improvement in brick-lifters
US1510886A (en) * 1922-05-19 1924-10-07 Claud E Fuller Hacking machine
US1710096A (en) * 1927-12-27 1929-04-23 Grafton E Luce Brick lifter
US3241686A (en) * 1963-06-26 1966-03-22 George P Hurst Anti-sway linkage for container engaging means
US3665655A (en) * 1969-04-24 1972-05-30 Waldrich Gmbh H A Device for an automatic exchange of rollers in roller polishing machines and the like
US3731785A (en) * 1972-05-01 1973-05-08 Forrest Paschal Machinery Co Method and apparatus for forming tyne layers in automatic brick stacking systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT226893B (de) * 1961-03-10 1963-04-10 Vmw Ranshofen Berndorf Ag Automatische Einrichtung zum Stapeln von Masseln
US3617054A (en) * 1969-03-21 1971-11-02 Mac Millan Bloedel Ltd Sheet delivery apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US113799A (en) * 1871-04-18 Improvement in brick-lifters
US1510886A (en) * 1922-05-19 1924-10-07 Claud E Fuller Hacking machine
US1710096A (en) * 1927-12-27 1929-04-23 Grafton E Luce Brick lifter
US3241686A (en) * 1963-06-26 1966-03-22 George P Hurst Anti-sway linkage for container engaging means
US3665655A (en) * 1969-04-24 1972-05-30 Waldrich Gmbh H A Device for an automatic exchange of rollers in roller polishing machines and the like
US3731785A (en) * 1972-05-01 1973-05-08 Forrest Paschal Machinery Co Method and apparatus for forming tyne layers in automatic brick stacking systems

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977535A (en) * 1973-12-21 1976-08-31 G. Siempelkamp & Co. Apparatus for loading a workpiece stack into a platen press
US3987917A (en) * 1973-12-21 1976-10-26 G. Siempelkamp & Co. Method of loading a workpiece stack into a platen press
US4042120A (en) * 1974-09-17 1977-08-16 Ausatuft S.P.A. Machine for stripping from frames, particularly pin frames, materials restrained to said frames
US3989145A (en) * 1975-01-20 1976-11-02 The Firestone Tire & Rubber Company Core transfer apparatus
US4400841A (en) * 1981-02-26 1983-08-30 Libbey-Owens-Ford Company Apparatus and method for handling sheet material
US4799426A (en) * 1986-09-02 1989-01-24 Danieli & C. Officine Meccaniche Spa System and method for moving skips and pressing scrap in a skip
US5630695A (en) * 1995-09-14 1997-05-20 Flomat Pty Ltd Pallet sorting machine
US9876217B2 (en) 2011-04-07 2018-01-23 Nissan Motor Co., Ltd. Battery electrode manufacturing apparatus and method thereof
CN108482774A (zh) * 2018-03-28 2018-09-04 泉州市创达机械制造有限公司 一种湿巾自动堆叠装置
CN108482774B (zh) * 2018-03-28 2021-05-18 泉州市创达机械制造有限公司 一种湿巾自动堆叠装置
US20210257653A1 (en) * 2020-02-14 2021-08-19 Toyota Jidosha Kabushiki Kaisha Stacking apparatus and stacking method
US11515563B2 (en) * 2020-02-14 2022-11-29 Toyota Jidosha Kabushiki Kaisha Stacking apparatus and stacking method

Also Published As

Publication number Publication date
FI54695C (fi) 1979-02-12
DE2209691A1 (de) 1973-09-13
FI54695B (fi) 1978-10-31
IT979573B (it) 1974-09-30
DE2209691C3 (de) 1980-02-21
ATA38973A (de) 1975-06-15
JPS4899856A (xx) 1973-12-17
FR2173995B1 (xx) 1977-12-30
AT328711B (de) 1976-04-12
FR2173995A1 (xx) 1973-10-12
DE2209691B2 (de) 1979-06-28
SE393090B (sv) 1977-05-02
BE795685A (fr) 1973-06-18

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