JPH0745288Y2 - Wood press equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood press device for making wood solid and forming the wood into a desired shape without performing lumber processing.

[0002]

2. Description of the Related Art Generally, soft woods such as cedar, larch, and poplar are used as building materials in some parts, but their fastness is low, so that their use range is limited.

Therefore, in order to expand the range of use of such wood, research has been conducted to make the wood solid, and as a result of the earnest research conducted by the present applicant, the wood has been subjected to high temperature and high pressure. It was found that pressing and fixing after softening in a steam atmosphere is an extremely effective means for solidifying the wood, and in Japanese Patent Application No. 2-117979, the wood is steamed at high temperature and high pressure. We have proposed a wood pressing device that hardens wood by softening it in the atmosphere and then pressing and fixing it.

As shown in FIG. 4, for example, the above-mentioned wood pressing apparatus is provided with a log 2 to be treated in a treatment tank 1 made of high-strength steel or stainless steel so as to withstand high temperature and high pressure.
And a pressing die 5 that moves up and down by a hydraulic cylinder 4 are arranged so as to face each other, and high-temperature and high-pressure steam is supplied to the inside of the processing tank 1 to heat the treated log 2 to a high temperature. Also, by placing it in a high-pressure steam atmosphere, the treated log 2 is heated and softened by the steam, and thereafter, the pressing die 5 is lowered by the hydraulic cylinder 4 to apply a mechanical compressive force to the treated log 2. By doing so, the processed log 2
Is compressed to a predetermined cross-sectional area ratio, and thereafter, the log 2 to be treated is fixed in the treatment tank 1 by placing it in a steam atmosphere of high temperature and high pressure.

According to the above wood pressing apparatus, the log 2 to be processed is heated and softened in the steam atmosphere of high temperature and high pressure in the processing tank 1 and compression-molded. The portion becomes small and becomes hard and strong wood, and the processed log 2 can be formed into a desired shape without performing lumber processing.

In FIG. 4, 6 is a safety valve, 7 is a thermometer, 8 is a pressure gauge, 9 is a steam valve, 10 is a pressurizing valve, 11 is an air vent valve, 12 and 13 are drain vent valves, 14 is a steam trap,
15 and 15 ... are viewing windows, 16 is a processing tank lid, 17 is a temperature sensor, 18
Is a hydraulic unit.

By the way, in the above wood press machine,
When the log 2 to be treated is toughened and at the same time compression-molded into a rectangular shape, as shown in FIG. 5, a pair of press-molding dies 19, 20 formed in a V shape are arranged on both sides of the log 2 to be treated so as to face each other. Further, by fixing the mold dies guides 21 and 22 which guide the press molds 19 and 20 to the receiving mold 2 and the presser mold 5, respectively, and slide the molds 21 and 22 in the directions close to each other, the presser mold is pressed by the hydraulic cylinder 4. When 5 is lowered and a compressive force is applied, both press molds 19 and 20 slide along the mold guide 21 of the receiving mold 3 and the mold guide 22 of the presser mold 5 in a direction in which they are close to each other. And this
The log 2 to be processed is compressed and formed into a quadrangular shape by both press molds 19 and 20.

[0008]

Conventionally, in the above-mentioned wood press machine, before the two press molds 19 and 20 for compressing and molding the log 2 to be processed into a square shape are abutted, the mold guide of the receiving mold 3 is formed. In order to avoid interference between 21 and the pressing die guide 22, the lengths of both guides 21 and 22 are formed shorter than the lengths of both press dies 19 and 20. For this reason,
In the state before compression, the mold guides 21 and 22 are the press mold 1
The length of the slide part A along with 9 and 20 is small,
When both press molds 19 and 20 are pressed from above and below by both mold guides 21 and 22, as shown in FIG.
There is a problem that 19 and 20 are deformed without sliding along the two mold guides 21 and 22, which hinders the compression molding of the treated log 2 into a square shape.

[0009]

In order to solve the above-mentioned problems of the prior art, the present invention provides a pair of dog-legged press forming dies on both sides of a log to be treated which has been heated and softened by steam at high temperature and high pressure. In a wood press device that is arranged opposite to each other, and slides both press molds in a direction in which they approach each other along a pair of V-shaped mold guides that relatively move in the vertical direction, and compression-molds a log to be processed, Provided is a wood pressing device in which comb-shaped concavo-convex portions are formed on both sides of the pair of molding die guides so that they are fitted to each other.

[0010]

According to the above-mentioned wood press machine, since both mold guides move relative to each other during compression molding due to the concavo-convex portions fitting together, even if the mold guide is formed longer than the press mold. The mold guides can be prevented from interfering with each other, and the press mold can be surely slid along the mold guide by forming the mold guide long.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 and 2 are a longitudinal sectional view and a side view of a main part of a wood pressing apparatus according to the present invention, and FIG. 3 shows a state of FIG. 1 during compression.

In FIGS. 1 to 3, reference numeral 23 denotes a processing tank made of high-strength steel or stainless steel so as to withstand high temperature and high pressure, in which a receiving die 24 and a pressing die 25 are vertically opposed. Are arranged. The receiving mold 24 is supported on the bottom of the processing tank 23, and is integrally fixed with a V-shaped molding die guide 27 having comb-shaped concave and convex portions 26 on both sides. The presser die 28 is attached and fixed to the tip of a piston rod 29 that is airtightly inserted into the inside of the processing tank 23 of a hydraulic cylinder (not shown) installed above the processing tank 23 via a seal member 28. Further, a V-shaped molding die guide 31 having comb-shaped uneven portions 30 on both sides is integrally fixed. As shown in FIG. 2, the concavo-convex portion 30 of the forming die guide 31 of the pressing die 25 is formed by concavo-convexly forming the concavo-convex portion of the forming die guide 27 of the receiving die 24. As a result, both mold guides 27, 31
The convex portion of the uneven portion 26 becomes the concave portion of the uneven portion 30, and the uneven portion 30
Relative movement so that the convex part of fits into the concave part 26 of the uneven part,
Both mold guides 27 and 31 do not interfere. And the receiving mold 24
A pair of dogleg-shaped press forming dies 32, 33 are sandwiched between both forming die guides 27, 31 of the holding die 25 so as to be opposed to both sides of the log 34 to be processed.

Next, the compression operation of the log 34 to be processed having the above structure will be described.

By lowering the pressing die 25 and applying a compressive force, both press forming dies 32, 33 are moved to both forming die guides 27, 31.
Are pressed in the vertical direction by the press molds 32 and 33, and the two press molds 32 and 33 slide along the two mold guides 27 and 31 in a direction toward each other and abut against each other. As a result, as shown in FIG. 3, the log 34 to be processed is compression-molded into a quadrangular shape by both press molding dies 32 and 33. At this time, the two molding die guides 27 and 31 relatively move so that the concavo-convex portions 26 and 30 fit into each other, so that the two molding die guides 27 and 31 do not interfere with each other.

As described above, according to the present invention, since the two molding die guides 27 and 31 do not interfere with each other due to the uneven portions 26 and 30, the lengths of both the molding die guides 27 and 31 are set to the two press molding dies 32.
It can be formed longer than the length of 33. As a result, the slide portion A along which the mold guides 27, 31 follow the press molds 32, 33 can be greatly enlarged, and both press molds 32, 33 can be moved along the mold guides 27, 31. It can be surely slid.

[0017]

According to the present invention, since there is no risk of the mold guides interfering with each other during compression molding of a log to be processed, the mold guide is formed longer than the press mold and the press mold guide is formed. Can be reliably slid along, and can be applied to press molds of various sizes with a set of mold guides.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a main part of a wood pressing device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a vertical cross-sectional view of the main parts of the wood pressing device during compression molding.

FIG. 4 is an overall schematic view of a wood pressing device which is a premise of the present invention.

FIG. 5 is a longitudinal sectional view of a main part of a conventional wood pressing device.

FIG. 6 is an explanatory diagram showing a conventional problem.

[Explanation of symbols]

 23 Processing tank 24 Receiving die 25 Pressing die 26 Concavo-convex section 27 Mold guide 30 Concavo-convex section 31 Mold guide 32 Press mold 33 Press mold

Claims (1)

[Scope of utility model registration request] 1. A pair of V-shaped press molding dies are arranged opposite to each other on both sides of a log to be treated which has been softened by heating at high temperature and high pressure steam, and both press molding dies are moved in the vertical direction relative to each other. In a wood press device for compressing and molding a log to be processed by sliding in a direction in which they approach each other along a pair of V-shaped mold guides, a comb is formed so that they fit on both sides of the pair of mold guides. A wood press device, which is characterized in that a concavo-convex portion is formed.