JPS6087008A - Manufacture of press molding die - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for manufacturing a press mold used for imparting a suitable grain pattern to a sliced veneer.
.

[Background technology]

In general, the manufacturing method for this type of sliced veneer is as shown in Figure Via 1. First, raw wood (1) is rotary processed to form a wood veneer +21k, and this wood veneer ( 2) By dyeing and controlling the humidity using the whole dyeing method (3a), a dyed veneer (3) is completely formed, and a plurality of dyed veneers (3) are all composite processed to form a composite veneer (4). Form. Next, a large number of composite veneers (4) are bonded together using an adhesive, and a press mold (5aH
5b), the flitch (6) is pressed in the vertical direction to shape the bottom into a predetermined shape. However, when laminating the composite veneer (411), the light and dark dyed veneers (3) with an appropriate thickness for forming the first wood grain are arranged alternately.Next, this flitch ( 6) A sliced veneer (7) with a predetermined grain is obtained by sawing into a rectangular parallelepiped shape and slicing it to an appropriate thickness. As shown in Figure 2, the wood grain pattern to be
There are straight grain M2, square grain M3, straight grain M4, etc., and the molding surface (9) of the upper and lower press molds (5aH5b) shown in Fig. 3
The shape of the unevenness is designed corresponding to each of the wood grain patterns M1 to M4. However, the inventors designed the wood grain pattern using a press mold (5aH) using a computer.
The entire molding surface of 5b) is designed using a CAD system, and the press molding molds (5a) and (5b) are manufactured using a CAM system that uses a computer to control the NC router for molding 1t11 processing. by the way,
Such press molds (5a) (5b) are required to have high pressure resistance and are large (for example, 1000 mm x 400 mm).
01u), there was a problem in that it was difficult to improve the processing accuracy of the molding surface and the desired accuracy could not be obtained. That is, in order to obtain high pressure resistance, when forming press molds (5a) and (5b) using high side pressure wood such as reinforced wood impregnated with resin or highly compressed laminated wood, high pressure resistance is required. Due to the manufacturing method of wood (resin impregnation process, pressurization process)
Since a large one cannot be obtained due to the limitation of
A long (for example, 4000 m) press mold (5aH
5b). However, when connecting many small stacked metal sheets like this,
The pressure applied during continuous bonding may be insufficient or uneven, resulting in poor adhesion, or the joint may become misaligned, making it impossible to perform high-precision grinding, making it impossible to obtain the desired precision of the molded surface. There is a problem, and there is also the problem of grinding during grinding,
The load on the cutting tool (ball end mill) was large, and there was a risk that the blade would break or grinding would become impossible.

On the other hand, press molding (5a) without using high pressure wood
When (5b) was integrally molded, there was a problem that the specified pressure resistance could not be obtained, the distortion during press working and due to changes over time became large, and the molding direction of 8 degrees could not be secured for a long period of time [Invention [Purpose of the present invention] The present invention has been made in view of the above points, and its purpose is to easily produce a large press mold, and to improve the molding surface of the press mold using high pressure resistant wood. An object of the present invention is to provide a method for manufacturing a mold that can improve processing accuracy.

[Disclosure of the invention]

FIG. 4 is a diagram showing the processing steps of the method of the present invention, and tlO
+Vi, for example, is a base plate made of high-pressure wood ↓ made by impregnating softwood with phenolic resin, and first of all,
A shape block (ll) is formed by laminating and fixing a plurality of this blank plate (Iol) in the horizontal direction. Next, this shape block (
The upper surface of the milled part (9a
) is formed, and a different partial molding surface (9a) is formed 7'
(Press molding m (5a) (, 5b) is formed by connecting a plurality of mold material blocks (II) in the horizontal direction. In this example, three mold material blocks (II (5a) and (5b) are formed in divided blocks, each with a dimension of 15 mm in the X direction.
00m, 1500 meters, 1000 meters, Y direction dimension is 110
0 (1), the Y direction dimension of the press mold (5aH5b) is l O00x, and the X direction dimension is 400011.
It becomes a. In addition, from the CAM system that designs the wood grain pattern, the partial molding surface (9al
- 5-dimensional fish school data for grinding (X, Y, Z)
is output, and the router (129k controlled CA) is output under NC control.
In the M system, information to be processed (CAM data) is created based on this fish school data (X, Y, Z), and the partial molding surface (9a) of each mold block (11) is ground. A ball end mill with a diameter of 30 m is used as the router 02), and the machining pitch in the Y direction is set to 15+u+, so that an appropriate surface roughness can be obtained. In the figure (
13a) (1 convex b) is a bolt insertion hole drilled in the X direction, (+4) is a blank plate (10) or a shape block tll
l 'I series of connecting bolts, (+5) is bolt f
14) is a nut that is screwed onto both ends of the blank plate T101 and buried in the side surface of the blank plate T101, and is inserted into the inner bolt insertion hole (1 convex a) with a Bordeaux machining tool (+5) that connects multiple blank plates. UO+ is connected to form the shape material pro-nk (Ill), and the bolt α inserted into the outer bolt insertion hole (13b)
4) and nut Q51 to make 3 shape material blocks (11
) are connected to form press molds (5a) and (5b). In this case, the mating surfaces between each blank board (101 questions) and each shape block (1) are glued with wood adhesive.In addition, by weakening the adhesive strength between each shape block curve, it can be easily disassembled. For example, in the case where the entire molding surface (9) is to be changed, only the mold block (ill) containing the relevant portion needs to be reprocessed, which simplifies the manufacturing process and reduces the cost.

〔Effect of the invention〕

In accordance with the above-mentioned method, the present invention forms a complete mold block by laminating a plurality of blank plates made of high-pressure-resistant wood such as resin-impregnated reinforced wood or highly compressed laminated wood in the horizontal direction. It is formed by grinding the upper rf11 of the block using a router to form an eri partial acid type 1114, and is made by horizontally connecting multiple mold blocks with different partial molding surfaces, and is suitable for large press molding. Since the entire mold is formed by dividing it into multiple hot material blocks, it can be manufactured easily and quickly without using large processing equipment, and all the blank plates can be connected as many blocks as can be connected without problems. Since it is only necessary to form a hot material block by
In order to avoid inconveniences during grinding due to misalignment of joints and to ensure molding surface accuracy over a long period of time, the molding surface can be grinded with high precision even when using high pressure resistant wood. It has the effect of being able to

[Brief explanation of drawings]

Fig. 1 is a process explanatory diagram showing a method for manufacturing sliced veneer, Fig. 2 is a diagram showing various methods of forming wood grains, Fig. 5 is a perspective view of a press mold used in the above, and Fig. 4 is a method of the present invention. FIG. (5aH5b) is a press mold, (9) is a molding surface, (9
a) is the partial molding surface, (lO) is the blank plate, (11) is the mold block, (1 匈 is the router. Agent Patent Attorney Ishi 1) Cho 7 Figure 3 Figure 4

Claims (1)

[Claims] (1) The entire shape block is formed by laminating and fixing multiple blank boards made of high pressure wood such as reinforced wood impregnated with wood Qli' or highly compressed laminated wood in the entire horizontal direction, and the top surface of the shape block is A method for manufacturing a press mold, in which a partial molding surface is formed by grinding with a router, and a plurality of mold material blocks on which different partial molding surfaces are formed are connected in the horizontal direction.