JPS5841722B2 - gohanseizohouhou - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel plywood manufacturing method, and its purpose is to reduce the defective rate in plywood manufacturing.

In the conventional plywood manufacturing method, as shown in FIG. 1, a middle board 2, a front board 3, and a back board 4, which are glued on the front and back sides by a spreader 1, are assembled to form a single plywood material 5.

A plurality of these plywood materials 5 are superimposed and temporarily pressed in a cold press 6, then hot pressed in a hot press 7, and then the four peripheral edges 9 are vertically processed by a double saw 8 to obtain the final product dimensions. The surface was smoothed with a sander 10 to form a plywood product 11.

At this time, when inserting the plywood material 5 from the cold press 9 process into the hot press 7, it is often the case that the top plate 3, middle plate 2, and back plate 4 are not aligned at the end of the plywood material 5 in the insertion direction, as shown in FIG. When a part of the plywood gets caught in the guide plate 12 of the hot press 7, bends, and is hot-pressed by the hot press 7, it becomes a defective plywood product 1 as shown in FIG.
It was 3.

On the other hand, the unevenness of the veneers at the leading end in the insertion direction of the plywood material 5 is currently unavoidable due to the unevenness of the sizes of the veneers and the work style in the assembly process.

The present invention solves the drawbacks of the conventional method, and an embodiment thereof will be described with reference to FIG. When inserting into the next hot press 7, the four peripheral edges 9 of the plywood material 5 are sawed with a double saw 8 and processed vertically.

This vertical processing can prevent a portion of the veneer from bending during insertion into the hot press 7, which occurs in the conventional method, resulting in a defective plywood product 13.

In this embodiment, the four peripheral edges 9 of the plywood material 5 are vertically processed by sawing with a double saw 8, but the same effect can be obtained by grinding with an edge sander or the like. .

As described above, the present invention is superior in that the four peripheral edges 9 of the plywood material 5 are vertically processed when inserted into the hot press 7, so that the veneer does not bend and there is no occurrence of defective plywood products 13. It is effective.

[Brief explanation of drawings]

Figure 1 is a block diagram of a conventional plywood production line, Figure 2 is a side view showing the state of plywood material being inserted into a hot press, and Figure 3 is a partially broken side view showing a defective plywood product. FIG. 4 is a block diagram showing a plywood manufacturing line according to the present invention using blocks.

Claims (1)

[Claims] 1. A plywood manufacturing method characterized by inserting a plywood material edge vertical processing step between the cold pressing step and the hot pressing step.