CZ2014147A3 - Device for pressing and fixation of pressed wood, especially temporarily plasticized solid wood - Google Patents

Abstract

The fixture consists of two parallel plates (1, 2) arranged parallel to each other, the distance of which can be locked by locking elements, where the plates (1, 2) are provided with guide holes (3, 4) with through holes (5) at their lateral sides, wherein the guiding extensions (3) of the first plate (1) are arranged between the guiding extensions (4) of the second plate (2), the locking elements forming the locking rods (6) retractable into the through holes (5) of the guiding extensions (3, 4) of the two plates (1, 2). The guide extensions (3, 4) are detachably connected to the plates (1, 2) and are replaceable. The distance between the plates (1, 2) is adjustable by the height of the guide extensions (3, 4) and / or the number of through holes (5) and / or the pitch of the through holes (5) in the guide extensions (3, 4). The distance between the plates (1, 2) is also adjustable by means of at least one spacer (7) located between the plates (1, 2).

Description

Technical field

The invention relates to the field of wood modification by pressing and relates to a preparation for the pressing and fixing of pressed wood, in particular solid wood temporarily plasticized.

BACKGROUND OF THE INVENTION

The process of pressing the temporarily plasticized solid wood may be limited by the design of the pressing device in which the actual pressing takes place. Solid wood is plasticized just before pressing, usually in hot water vapor, or with ammonia, or using microwave radiation. In the case of pressing such wood in deck presses with flat pressing plates, the plasticized wood is compressed and subsequently dried in the press. The disadvantage is that such a procedure is quite lengthy, with low work efficiency. Compressed plasticized solid wood must be held between the press plates until it is dried and cooled to the required values. The actual pressing device is blocked by drying and subsequent cooling of such wood or removal of residual ammonia until the plasticizing effect subsides. Only after the compressed plasticized wood has reached all the desired values can the fixation of the shape of such wood be released without significant dimensional changes.

The essence of the technical solution

The aforementioned drawbacks are largely eliminated by a device for the compression and fixation of compressed wood, in particular solid wood, temporarily plasticized, consisting of two parallel opposing panels, the distance of which can be secured by securing elements, in the embodiment according to the invention. provided on their lateral sides with guide holes with through holes, of which the guide plates of the first plate are arranged between the guide plates of the second plate, the locking elements being locking rods which can be inserted into the through holes of the guide plates of the two plates.

The guide pieces are detachably connected to the plates and are replaceable.

The distance between the plates is adjustable by the height of the guide pieces and / or the number of through holes in the guide shoes and / or the pitch of the through holes in the guide shoes.

The distance between the plates may also be adjustable by the thickness of at least one spacer placed between the plates.

The preparation for pressing and fixing of the pressed wood according to the invention makes it possible to achieve the necessary drying of the pressed plasticized wood to the required humidity or acclimatization to certain external conditions, without having to remain in the classical floor press after the pressing. By using the jig, the capacity of the deck press is used only for the pressing itself. Drying and air conditioning of compressed plasticized wood takes place elsewhere. This significantly increases the efficiency of the work, since the operation of the deck press does not have to be blocked by lengthy drying and air conditioning of the pressed plasticized wood directly between the press plates.

Overview of the drawings

The jig for pressing and fixing the pressed wood according to the invention is schematically shown in the attached drawing, where Fig. 1 shows the jig with inserted prisms of plasticized solid wood, raised first plate and pulled-out bars, and Fig. 2 shows detail of the same jig with pressed wood and the first plate in a position fixed by means of the interlocking bars.

DETAILED DESCRIPTION OF THE INVENTION

The jig for pressing and fixing the pressed wood consists of two parallel horizontally arranged steel plates 1, 2, the spacing of which is adjustable by means of guide extensions 3, 4, which are attached to the plates 1, 2 at their sides so that the extensions 3 upper first the plates 1 are arranged between the extensions 4 of the lower second plate 2.

«· · · · ·

Vertically arranged horizontal through holes 5 are provided in the extensions 3, 4 of the two plates 1, 2 for the insertion of the locking bars 6. The guide extensions 3, 4 are detachably connected to the plates 1, 2 by screws and can be removed and changed as required. . The distance between the plates 1, 2 is adjustable by means of the height of the guide extensions 3, 4 and the horizontally oriented through holes 5 arranged vertically therein. The device may also comprise spacers 7 of different thicknesses which can be placed between the plates 1, 2 and their distance.

The temporally plasticized solid wood 8 to be pressed in a deck press with flat press plates is first inserted into the jig for pressing and fixing the pressed wood between the boards 1, 2 so that the guide extensions 3 of the upper first board 1 are between the extensions 4 of the lower second board 2. The jig with wood 8 is placed in a multi-stage press. Once the desired degree of compression has been reached, the locking bars 6 are inserted into the through holes 5 of the extensions 3, 4 of both plates 1, 2, which lock the fixture and the pressed wood 8 firmly. If the device is thus secured against the pressure caused by the elastic expansion of the compressed wood 8, the tray press can be opened and the device with the pressed wood 8 removed.

The degree of compression can be controlled by replacing the extensions 3, 4 with a different height and / or the number and spacing of the through holes 5, or by inserting a steel spacer 7 between the boards 1, 2, or stacking a plurality of plasticized wood chips 8.

The solid wood, generally especially orthotropic, wood block 8 can be inserted into the jig so that the pressing takes place as desired, preferably in a radial or tangential direction.

Industrial applicability

The tool for pressing and fixation of pressed wood is especially useful for pressing solid friezes for the production of joints, especially for wear layers of wooden floors or other solid wood products exposed to extreme loads. However, it can be used for pressing any wood species.

Claims (8)

PATENT CLAIMS A device for pressing and fixing pressed timber, in particular solid timber, temporarily plasticized, consisting of two parallel opposing panels, the distance of which can be secured by securing elements, characterized in that the panels (1, 2) are provided with guide extensions at their sides (3, 4) with through holes (5), of which the guide extensions (3) of the first plate (1) are arranged between the guide extensions (4) of the second plate (2), the locking elements being retaining bars (6) slidable into the through holes holes (5) of the guide extensions (3, 4) of the two plates (1, 2). Device according to claim 1, characterized in that the guide extensions (3, 4) are detachably connected to the plates (1, 2) and are replaceable. The device according to claim 1, characterized in that the distance between the plates (1, 2) is adjustable by the height of the guide pieces (3, 4) and / or the number of through holes (5) in the guide pieces (3, 4) and / or or the spacing of the through holes (5) in the guide extensions (3, 4). The device according to claim 1 or 3, characterized in that the distance between the plates (1, 2) is adjustable by the thickness of at least one spacer (7) located between the plates (1, 2). '5 List of reference numbers used 1 first plate 2 a second plate 3 shows the guide plate of the first plate 4 shows the guide plate of the second plate 5 through hole 6 locking rod 7 spacer 8 wood