EP0534340B1 - Verfahren und Vorrichtung zum Trocknen von Holzbrettchen - Google Patents

Verfahren und Vorrichtung zum Trocknen von Holzbrettchen Download PDF

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Publication number
EP0534340B1
EP0534340B1 EP92116100A EP92116100A EP0534340B1 EP 0534340 B1 EP0534340 B1 EP 0534340B1 EP 92116100 A EP92116100 A EP 92116100A EP 92116100 A EP92116100 A EP 92116100A EP 0534340 B1 EP0534340 B1 EP 0534340B1
Authority
EP
European Patent Office
Prior art keywords
stacking pallet
pallet according
stacking
drying
veneer
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
EP92116100A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0534340A1 (de
Inventor
August Hipper
Peter Hamberger
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.)
Hamberger Industriewerke GmbH
Original Assignee
Hamberger Industriewerke GmbH
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 Hamberger Industriewerke GmbH filed Critical Hamberger Industriewerke GmbH
Publication of EP0534340A1 publication Critical patent/EP0534340A1/de
Application granted granted Critical
Publication of EP0534340B1 publication Critical patent/EP0534340B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
    • F26B25/185—Spacers; Elements for supporting the goods to be dried, i.e. positioned in-between the goods to build a ventilated stack
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
    • F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
    • F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
    • F26B15/18—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by endless belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/04—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in presses or clamping devices

Definitions

  • the invention relates to a stacking plate for forming drying stacks according to the preamble of claim 1 and a use of the stacking plate for drying veneers according to the preamble of claim 13.
  • a device for drying bricks in which a brick is arranged on a sheet which is provided with openings for supplying the drying air from below.
  • the object of the invention is to provide a stacking board and to use it for drying veneer layers, so that optimum drying conditions are ensured with minimal technical effort.
  • the linear support of the wooden boards ensures a minimal contact area and at the same time an improved flow around the wooden boards to be dried.
  • the line support creates a specifically high pressure on the wood at relatively short intervals, which leads to a clamping and thus shape stabilization of the wooden boards during drying and to a reduction in shrinkage, which also leads to a reduction in tension of the wood in the variable climatic conditions after Drying contributes. Due to the shape stabilization during drying, the wooden boards have such a flatness that they can also be stored for further processing.
  • the cross flow of the drying medium allows for uniform drying with a moisture gradient that is almost identical over the entire drying surface.
  • the line pressure on the wooden boards must be sufficient to restrict the freedom of movement of the wooden boards, but must not be so great that permanent impressions are created in the wooden surface.
  • the line print is applied according to claim 2 at a distance of preferably 12 mm and should be at least 20 g / cm according to claim 3.
  • the drying can be carried out in a continuous process according to claim 19 or stationary in a stack according to claim 13.
  • the use of the stacking plate according to the invention also enables a fully automatic stacking process. So that the uppermost layer is clamped sufficiently in a higher stack, either a corresponding bracing of the entire stack or a weight load from above is possible.
  • the wooden boards are clamped in a particularly uniform manner, it being possible for them to be fully automated when the wooden boards are placed and removed from the conveyor gap.
  • FIG. 1 shows an arbitrary section of a drying stack for stationary drying.
  • a stacking plate 1 is located between two wooden board layers 2. By stacking additional stacking boards and wooden board layers, drying stacks of up to 200 layers can be formed.
  • the stacking plate 1 consists of a zig-zag folded sheet made of stainless steel or aluminum, the upper and lower vertices of which serve as support sections 3 for the wooden board layers or veneer layers.
  • These wooden boards are placed on a stacking plate in such a way that their grain or longitudinal fibers run transversely to the support sections, which in turn are straight and linear. This results in a linear contact with minimal support or contact area for the wooden boards, at the same time creating sufficient space between the support sections for cross ventilation along the ribs. Channels which are parallel to one another are thus formed between the stacking plate and the adjacent board layers and ensure unimpeded circulation of a drying medium.
  • the stacking plate can be provided with breakthroughs, not shown, in order to ensure a cross flow, in particular when a drying medium is forced to circulate, and thus to achieve temperature and moisture compensation in the channels.
  • a drying stack consisting of up to 200 layers of wooden boards is subjected to a stationary drying process in a drying chamber, which means a significantly lower technical effort compared to continuous drying and thus also reduces costs.
  • the stacking plate can also be formed with rounded shaft apices for manufacturing reasons.
  • ceramic, plastic or light metal alloys can also be used as the material for the stacking plate.
  • the stacking plate can also be provided with various coatings which are resistant to the substances separated from the wood during the drying process. Basically, the material, shape, thickness and, if necessary, coating of the stacking plate should be selected depending on the nature of the wooden boards or veneers to be dried and the stack height.
  • the principle of the invention of clamping the wooden boards or wood veneers under linear support sections running transversely to the longitudinal grain is also suitable for the continuous process.
  • two endless conveyor belts 4 and 5 arranged one above the other are used, the lower and upper parts 6 and 7 of which delimit a parallel passage gap 8, the height of which corresponds to the thickness of the wooden boards 9 conveyed through the gap.
  • the lower conveyor belt 4 has a leading section 10 for placing the wooden boards 9 before entering the passage gap. Accordingly, a trailing section can be provided at the end of the passage gap.
  • the conveyor belts 4 and 5 of Fig. 2 are zig / zag-shaped belts, which rest with their apex 11 on the wooden board under a predetermined pressure, which can be exercised according to the schematic indication by the arrows 13 via a pressure plate 14, so that a line pressure of 20 g / cm on both sides is exerted through the apex 11 on the wooden boards.
  • the distance between the apex 11, the height of the zigzag fold and the material thickness can be the same as for the stacking plate.
  • the passage gap is located at least in the middle section between the leading and trailing sections in a drying oven.
  • link chain belts 15 and 16 are provided for conveying the boards, which have round bars 17 for supporting the wooden boards, which, like the apex of the belts according to FIG. 2, extend transversely to the conveying direction F across the width of the conveyor belts extend so that a line pressure can be exerted transversely to the longitudinal direction of the fibers on the wooden boards.
  • the height of the round bars i.e. their diameter can correspond to the height of the stacking plate according to FIG. 1. The same applies to the distance a between the round bars.
  • the loading of the tapes for clamping the wooden boards can take place as in the case of FIG. 2.
  • a method and a device for drying wooden boards are disclosed, in which the latter are clamped on both sides under line pressure transversely to the fiber direction in a drying device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Massaging Devices (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
EP92116100A 1991-09-23 1992-09-21 Verfahren und Vorrichtung zum Trocknen von Holzbrettchen Expired - Lifetime EP0534340B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4131642 1991-09-23
DE4131642A DE4131642C2 (de) 1991-09-23 1991-09-23 Stapelvorrichtung

Publications (2)

Publication Number Publication Date
EP0534340A1 EP0534340A1 (de) 1993-03-31
EP0534340B1 true EP0534340B1 (de) 1995-11-29

Family

ID=6441279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116100A Expired - Lifetime EP0534340B1 (de) 1991-09-23 1992-09-21 Verfahren und Vorrichtung zum Trocknen von Holzbrettchen

Country Status (8)

Country Link
EP (1) EP0534340B1 (fi)
AT (1) ATE130930T1 (fi)
DE (2) DE4131642C2 (fi)
DK (1) DK0534340T3 (fi)
ES (1) ES2079762T3 (fi)
FI (1) FI108750B (fi)
NO (1) NO931854L (fi)
WO (1) WO1993006425A1 (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT233508Y1 (it) * 1994-06-17 2000-01-28 Cremona Lorenzo Dispositivo di essicazione a guida perfezionata per sfogliati di legno
FR2729097B1 (fr) * 1995-01-09 1997-04-11 Leuvrey Bernard Abel Andre Liteau de conditionnement des sciages de bois
NL1008885C2 (nl) * 1998-04-15 1999-10-18 B & M Systems B V Inrichting voor het drogen van verpakkingen.
AT412466B (de) 2001-07-11 2005-03-25 Theodor Dr Vanicek Stapelvorrichtung
PT2504134T (pt) 2009-11-25 2017-04-07 Wood Eng Tech Ltd Método de secar produtos de madeira
DE102014012315A1 (de) 2014-08-19 2016-02-25 Friedrich-Wilhelm Struve Toleranzausgleichendes dünnes flächiges Heizelement
CN107726749A (zh) * 2017-10-19 2018-02-23 蒋志远 一种木材晒干装置

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE514076C (de) * 1930-12-06 Alexander Nicola Trockenhorde fuer Ziegelformlinge
DE108389C (fi) * 1899-02-22 1900-02-13
US1349458A (en) * 1919-09-19 1920-08-10 Johnson Carl Edward Drier-tray
US1527789A (en) * 1921-05-06 1925-02-24 Western Brick Company Metal pallet for brick or tile
US1574895A (en) * 1925-06-22 1926-03-02 Joseph H Johnson Lumber-stacking device
US1658684A (en) * 1925-11-20 1928-02-07 Kocha Joseph Edwin Lumber drier
DE469273C (de) * 1927-05-07 1928-12-06 Hermann Kuehne Profilierter Trocken- und Foerderkanal fuer gebogene Hoelzer
US2007833A (en) * 1933-04-21 1935-07-09 Reconstruction Finance Corp Machine for drying sheet material
DE882676C (de) * 1948-03-12 1953-07-09 Secheron Atel Verfahren und Einrichtung zur Trocknung von Schnittholz
US2712699A (en) * 1950-04-28 1955-07-12 Fecht Peter Device for preventing buckling and cracking when drying veneers
FR1300898A (fr) * 1961-06-29 1962-08-10 Baguette de séparation pour le séchage des bois
US3199213A (en) * 1961-07-12 1965-08-10 Crown Zellerbach Canada Ltd Method of changing the moisture content of wood
GB1045928A (en) * 1964-09-24 1966-10-19 Alpo Eino Makinen Improvements in or relating to apparatus for drying pervious sheet material
US3346967A (en) * 1964-10-20 1967-10-17 Makinen Alpo Eino Shelf construction for a multistage dryer for bodies in plate or sheet form
US3623235A (en) * 1970-10-07 1971-11-30 Smitherm Industries Drying apparatus for veneers and other materials of sheet and web form
US4017980A (en) * 1973-04-30 1977-04-19 Kleinguenther Robert A Apparatus and process for treating wood and fibrous materials
CA949085A (en) * 1973-11-20 1974-06-11 Dennis Hutcheson Kiln sticker
US3927769A (en) * 1974-04-29 1975-12-23 Metropolitan Wire Corp Shelf structure
DE2718411C3 (de) * 1977-04-26 1980-10-30 Otto 3216 Salzhemmendorf Kreibaum Sen. Spann- und Transportvorrichtung für Plattenstapel
US4199870A (en) * 1978-01-09 1980-04-29 Koppers Company, Inc. Method for preventing sticker marks on architectural grade plywood and lumber

Also Published As

Publication number Publication date
DK0534340T3 (da) 1996-01-29
FI932291A (fi) 1993-05-19
NO931854L (no) 1993-06-30
WO1993006425A1 (de) 1993-04-01
FI932291A0 (fi) 1993-05-19
EP0534340A1 (de) 1993-03-31
FI108750B (fi) 2002-03-15
DE4131642C2 (de) 1998-07-30
ES2079762T3 (es) 1996-01-16
DE59204489D1 (de) 1996-01-11
ATE130930T1 (de) 1995-12-15
DE4131642A1 (de) 1993-04-15
NO931854D0 (no) 1993-05-21

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