JPS58199105A - Manufacture of flitch - 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 The present invention relates to the production of Tosei decorative veneers and a method for producing flitches used therein.

Conventionally, 7-rich has been manufactured by applying adhesive to veneers, laminating a plurality of veneers, and pressing this laminate with a pair of upper and lower molds having curved mold surfaces. However, when pressing in this way, if an adhesive that cures slowly or is used without curing, the laminated veneers will shift from side to side, making the pressing work difficult. was.

In particular, in the case of multi-stage pressing, a laminate consisting of multiple veneers laminated with adhesive is used as one book, and each book (one stage) is subjected to primary pressing (temporary pressing: using adhesive or pre-metal pressure). Pressure (MI) is applied in an uncured state, then the next book is piled up and temporarily pressed, and finally the multiple books that have been temporarily pressed are subjected to main pressing. , during temporary compression,
The veneer shifted left and right, making it difficult to press.

This invention was made in view of these circumstances, and involves manufacturing a flitch by pressing a plurality of veneers laminated together with a bonding agent between a pair of upper and lower molds with curved mold surfaces. This flitch manufacturing method is characterized by making a hole in the end of a veneer, fitting the hole into a movement prevention pillar, and pressing the veneer in a state that prevents movement.

That is, this % lightening prevents the veneer from shifting to the left or right when pressing the laminate, so that the pressing operation can be easily performed.

The present invention will now be explained in detail based on one example.

In other words, several holes are made in each end (both ears) perpendicular to the longitudinal direction of the veneer (including not only wood veneer but also non-wood veneer such as paper), and this veneer is Align the holes and stack one book as shown in FIG. In FIG. 1, 1 is a single plate, 2 is a hole, and 3 is a laminate for one book. Next, this laminate 3 is temporarily pressed. In this case, a pair of upper and lower one-open molds with movement prevention pillars planted from both ends of the lower mold were used, and the holes 2 of the veneer 1 of the laminate 3 were fitted into the movement prevention pillars. Perform temporary compression in this condition.

Next, the laminate for the next book is stacked on top of the laminate and temporarily pressed in the same manner as above.

In this way, a plurality of laminates are sequentially temporarily compressed.

This is shown in FIGS. 2 and 3. In the figure, 3 is 1
A stacked body for a book, 4 is an upper mold, 5 is a lower mold, and 6 is a movement prevention pillar.

In this case, the laminate 3 is temporarily pressed with its hole 2 (FIG. 1) fitted into the movement prevention pillar 6, so that displacement of the veneer is prevented. The laminate 3 that has been temporarily pressed in this manner is subsequently subjected to final pressing and is turned into a flitch.

Note that the upper mold 1111 is not provided with the movement prevention pillar 6.
When a support post is erected at one edge, the action of the movement prevention post 6 and the support post further prevents displacement of the veneer during pressing. However, as shown in FIGS. 4 and 5, even if only the support post 8 is provided on the side edge of the type 1 7,
This is not very effective as the veneer may get stuck to the support pillar 8 and shift.

In addition, this invention is effective when applied to shorten the pressing time by applying high-frequency heating to the laminate 3 during temporary pressing, and prevents displacement of the veneer and prevents stacking. It is possible to reduce the time required for mulberry production and to prevent the veneer from deforming due to hammering or vibration during grading from temporary compaction to final compaction.

As described above, the present invention is a method for producing 7-rich pieces by pressing a plurality of veneers laminated together with an adhesive between eleven pairs of molds having curved mold surfaces. This is a manufacturing method in which a hole is made at the end of the veneer and the hole is fitted into a movement prevention pillar, and the veneer is pressed while preventing movement, so there is no possibility of the veneer shifting during pressing. Good 7 with no veneer displacement.
You can get rich.

Next, examples will be described.

As shown in Fig. 6, three holes 9 with a diameter of 25 cm were formed as shown in Fig. 4 (as shown in Fig. 4) at both ends perpendicular to the longitudinal direction of a sliced agathis veneer with a length of 600 m + 4,100 cm and a thickness of α 8. On the other hand, as shown in FIG. 7, three anti-movement pillars 11 with a diameter of 20 cm and a height of 600 cm are planted from the end of the lower mold 10 as shown in the figure, and holes are formed in these anti-movement pillars 11. 9 (6th
600 sliced Agatis veneers were pressed together using a slow-curing adhesive with the two Agatis slices fitted together. the result,
There was almost no deviation of the veneer (approximately θ~5■), and a good 7 richness was obtained.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a laminate used in an example of the present invention, and FIG.
3 and 3 are detailed illustrations of the present invention, FIGS. 4 and 5 are illustrations of modifications thereof, and FIGS. 6 and 7 are illustrations of one embodiment of the invention. (5) l... Single plate 2... Hole 3... Laminate 4...
Upper mold 5, upper mold 6...Movement prevention column Patent applicant Matsushita Electric Works Co., Ltd. Agent Patent attorney Takehiko Matsumoto (6)

Claims (1)

[Claims] (1) A 7-rich manufacturing method in which multiple veneers laminated with adhesive are pressed together using a pair of upper and lower molds with curved mold surfaces to produce 7-rich veneers. A flitch manufacturing method characterized by drilling a hole at the end, fitting the hole into a movement prevention pillar, and clamping the veneer while preventing movement.