JPS596201B2 - Deformed laminated lumber manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing irregularly shaped laminated timber that can be obtained by laminating and bonding a plurality of wooden veneers and then bending or bending them.

Conventionally, when forming laminated wood into a groove shape or a cross-sectional shape, a plate-shaped laminated wood is placed on a groove-shaped female mold and then pressed from the top with a prismatic male mold to bend it. In this method, a plate-shaped laminated timber is bent along a prismatic male mold and pressed against it from two or three sides using a flat plate.

However, in the former method, shearing force is applied to the surface of the laminated timber when it is bent, and when the molded laminated timber is removed from the mold, the surface is often scratched due to rubbing, and in the latter method, there are many scratches during molding. It is necessary to press from one direction, and it is difficult to maintain the balance of the pressure, and special consideration must be taken to prevent scratches when removed from the mold.

Accordingly, an object of the present invention is to provide an apparatus for manufacturing irregularly shaped laminated timber that can easily form a shape without damaging the surface of the laminated timber.

A case of failure of this invention is shown in FIGS. 1 and 2.

That is, in this apparatus for producing irregularly shaped laminated lumber, two core pieces 1 and 2 having a right triangular cross section are arranged facing each other with the slopes facing inside, and the lower acute corners of each are connected by a hinge 3. A core mold 6 in which the acute angle portions are connected by a tension spring 4, and the outer upper parts of the core pieces 1 and 2 expand outward when the wedge-shaped member 5 is press-fitted between the opposed slopes. , on both sides of the bottom surface 7, side plates 8 and 9, each having an inverted trapezoidal cross-section and whose lower surfaces are inclined outward and downward, are connected by hinges 10° 11 in a flexible manner, and the lower surfaces of the side plates 8 and 9 is slidably supported by fixed crosspieces 12.13, and when the bottom plate 7 and the side plates 8, 9 are stretched and the bottom plate 7 is pressed from above with the core die 6, the bottom plate 7 is When retracting, both side plates 8 and 9 rotate and bend from a hinge 10, and the bottom plate 7 and both side plates 8 and 9 form a female die 14 forming a concave surface.

Note that a support arm 16 is provided on the lower surface of the bottom plate 7 via a spring 15 and moves up and down with a constant stroke.

With this configuration, the plate-shaped laminated timber 17 is placed on the female mold 14 kept in an expanded state, and the wedge-shaped member 5 is placed on the core piece 1.
, 2 and press the core mold 6 against the bottom plate 7 through the laminated wood 17, the bottom plate 7 retreats and the fixed beams 12 and 13 rise relatively as shown in FIG. shape, and these push up the side plates 8 and 9, so that the side plates 8 and 9
, 9 are rotated and bent from both sides, and the laminated wood 17 is molded into the core mold 6.
It can be bent and shaped by bending it.

In this case, only by press-fitting the wedge-shaped member 5, the force will be applied uniformly to the groove-shaped bottom and side surfaces of the laminated timber 17, so there is no need to adjust the balance of pressure, and the laminated timber 17 will not absorb shearing force. It is easily bent by the side plates 8 and 9 without being bent.

Furthermore, when molding is completed by applying pressure and heating for a certain period of time as necessary in this pressure-molding state, the upper end of the core mold 6 is contracted by the tension spring 4 by retracting the wedge-shaped member 5, and the core mold 6 is contracted by the tension spring 4. 6 can be removed without rubbing against the laminated wood 17, and since the bottom plate 7 rises and both side plates 8 and 9 open in an extended state, the outer surface of the laminated wood 17 can also be removed by rubbing. It won't cause any damage.

This apparatus for producing irregularly shaped laminated timber can only be applied to the molding of grooved irregularly shaped laminated timber used for (5) hanging cabinets, C15) television stands, (C) wall-mounted shelves, etc. as shown in Figure 3. First, by slightly changing the usage method or design, it is possible to obtain an irregularly shaped laminated timber having a cross-sectional shape like the bottom-opening storage body shown in the same figure.

In addition, in the actual case, the cross sections of the core pieces 1 and 2 were made into right triangles, but by press-fitting the wedge-shaped member 5, at least the upper part (
It may be any type of triangle, rectangle, trapezoid, other quadrilateral, or other polygon as long as it expands at the rear (with respect to the press-fitting direction).

The same applies to the shape of the side plates 8 and 9, and furthermore, the mold surface does not necessarily have to be composed of three parts, the bottom plate 7 and both side plates 8 and 9, that is, two or more sides are connected. You may.

As described above, the apparatus for manufacturing irregularly shaped laminated timber of the present invention includes a core mold in which a plurality of core pieces are arranged facing each other and connected to each other so as to be swingable at their tips, while having a gap at their rear ends;
a wedge-shaped member that presses into the gap of the core mold from the rear end side to the front end side to expand and advance the core mold; It consists of a bottom plate and a pair of side plates that are connected to both sides of the bottom plate in a flexible manner, and in a bent state, it is fitted onto the core mold through the laminated material to be formed, and in an extended state, the inner surface becomes planar. a female mold; and a fixing member that is fixedly installed in contact with the outer surfaces of the pair of side plates and closes the side plates when the bottom plate of the female mold is retreated by the advancement of the wedge-shaped member. This has the advantage that it can be easily molded without damaging the surface of the laminated wood.

[Brief explanation of the drawing]

FIG. 1 is a front view of a lost case of the present invention, FIG. 2 is a front view showing its operation, and FIGS. 3A to 3D are perspective views of irregularly shaped laminated timber that can be obtained by this apparatus.

Claims (1)

[Claims] 1. A core mold in which a plurality of core pieces are arranged to face each other and are swingably connected to each other at their tips, and have a gap at their rear ends; a wedge-shaped member that pushes into the core mold to expand and advance the core mold; a bottom plate that faces the tip of the core mold and is arranged to be movable back and forth; and a wedge-shaped member that is bendably connected to both sides of the bottom plate. A female mold that is fitted externally to the core mold through the laminated material to be formed in a bent state and whose inner surface becomes flat in an extended state; A fixed member that is fixedly installed and closes the side plate as the bottom plate is retreated by the advancement of the wedge-shaped member.