JP2000141320A - Compression device for soft wood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make strong a soft wood, the utility value of which is low, with a high productivity through its softening, compressing and solidifying. SOLUTION: This device is equipped with a softening device 12, which softens a soft wood 1 by heating up to an elevated temperature, pairs of long and narrow, upper and lower molds 2, between which the softened soft wood is pinched, a plurality of roll compressors, which are arranged in tandem so as to compress the soft wood between the molds by vertically compressing the molds during the horizontal and longitudinal feeding of the molds and a continuous fixing device 16, which successively and widthwise moves the upper and the lower molds held under the state being compressed. The continuous fixing device 16 consists of an upper and a lower chain conveying devices 17, which move horizontally and widthwise, each supporting frame 18 for backing-up the roller chains 17b of each chain conveying device and each horizontally holding plate 19 mounted to each roller chain. The upper and lower molds 2 under a compressed state are held between the horizontally holding plates 19 opposing vertically to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for reinforcing soft materials such as cedar and larch.

[0002]

2. Description of the Related Art It is known that thinned wood such as cedar and larch, which are soft and have low utility value, can be softened and subjected to an external pressure such as compression to be compressed and deformed and solidified to be transformed into hard and strong wood. (For example, see Japanese Patent Application Laid-Open No. 5-50409)
No., JP-A-6-285815, etc.). JP-A-5-50
No. 409 “Treating method and apparatus for wood” consists of a high-temperature and high-pressure container, a press machine, etc., in which a piece of wood is rapidly heated and softened by steam and high-frequency waves in a high-temperature and high-pressure container, and then compression-molded to deform the wood at a high temperature. It is fixed in a high-pressure atmosphere. Japanese Patent Application Laid-Open No. 6-285815 discloses a method for improving the quality of low-quality wood, in which the wood is softened by directly electrically heating the wood at the pressure of the equilibrium vapor pressure of the softener.
Drying the softened wood, hardening the dried wood, and cooling the hardened wood.

[0003]

However, Japanese Patent Laid-Open Publication No.
In the means of No. 0409, wood is heated to a high temperature (100 to 230 ° C.) in a high-temperature and high-pressure vessel, and a high-pressure (1 to 30 ° C.)
kg / cm ² ) of steam and softened, and then press-molded the wood in a mold in a high-temperature and high-pressure vessel to a cross-sectional area ratio of 1/3 to 2/3 in a mold. Therefore, it is necessary to hold the wood for a predetermined time (several minutes to several tens of minutes) to fix the wood, and there is a problem of low productivity. That is, conventionally, since the pressing and fixing of the wood is performed in a high-temperature and high-pressure container using a press machine, batch processing is required. In particular, it is necessary to hold the wood under pressure for a predetermined time after softening, and the productivity is low.

In the method disclosed in Japanese Patent Application Laid-Open No. 6-285815, it is necessary to dry the softened wood, so that the drying shape fixing step takes a long time, and therefore, there is a problem that productivity is low.

The present invention has been made to solve the above-mentioned problems. That is, the object of the present invention is:
An object of the present invention is to provide a soft material strengthening device capable of softening, compressing, fixing and strengthening a soft material having low utility value with high productivity.

[0006]

According to the present invention, there is provided a softening device for heating a soft material by heating it at a high temperature, an upper and lower elongated mold for holding the softened soft material therebetween, and A plurality of roll compressors arranged in tandem to compress the soft material therebetween while compressing in the vertical direction while feeding horizontally, and a continuous fixing device that sequentially moves in the width direction while holding the upper and lower molds in a compressed state, The soft material reinforcement apparatus characterized by comprising:

According to the structure of the present invention, the soft material softened by the softening device is sandwiched between the upper and lower elongated dies, and compressed vertically in a plurality of roll compressors while being fed horizontally in the longitudinal direction. The soft material can be supplied to the continuous fixing device while being continuously compressed. Further, in the continuous fixing device, since the upper and lower dies are sequentially moved in the width direction while being kept in a compressed state, the time until carrying out is set to be equal to or longer than the time required for fixing by appropriately setting the feed speed. In addition, the fixed and reinforced wood can be continuously carried out. Therefore, one by one processing tact (fixed time)
, While softening, compressing and fixing are continuously performed, the productivity of soft material reinforcement can be improved.

According to a preferred embodiment of the present invention, the continuous fixing device includes an upper and lower chain conveyor device which moves horizontally in the width direction, a support frame for backing up a roller chain of the chain conveyor device, and an attachment to the roller chain. Compressed upper and lower dies are held between upper and lower opposed horizontal holding plates. According to this configuration, the upper and lower horizontal holding plates for holding the upper and lower molds in the compressed state are respectively attached to the roller chains, and each roller chain moves horizontally in the width direction while being backed up by the support frame. No special power is required to hold the mold in compression. Therefore, the structure of the device is simplified, and the required power can be reduced.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings, common members are denoted by the same reference numerals, and redundant description is omitted. FIG. 1 is an overall plan view of the soft material reinforcing device of the present invention. As shown in this figure, the soft material strengthening device 10 of the present invention comprises a softening device 12, a tandem rolling mill 14, and a continuous fixing device 16.
Is provided. The softening device 12 is, for example, a continuous heating furnace,
Soft materials 1 such as cedar and larch, which have low utility value, are heated to a high temperature of about 100 to 230 ° C. while being humidified with steam to be softened. The softened soft material 1 is discharged in the longitudinal direction (downward in the figure), sandwiched between upper and lower elongated molds 2, and supplied to a tandem rolling mill 14.

FIG. 2 is a sectional view taken along the line AA of FIG. The tandem rolling mill 14 includes a plurality (four in this example) of roll compressors 15 arranged in tandem, and compresses the mold 2 in the vertical direction while horizontally feeding the mold 2 in the longitudinal direction (right direction in this figure). As shown schematically in FIG. 4, the soft material 1 is compressed between the upper and lower molds 2. This compression ratio is
The sectional area ratio is preferably about 1/3 to 2/3. Due to this compression, the fine hollow portions formed in the wood become small and become hard and strong wood. In addition, the cross-sectional shape of the soft material 1 and the mold 2 is not limited to FIG. 4 and can be arbitrarily changed as long as the soft material 1 can be compressed.

Further, by feeding the roll compressor 15, the continuous fixing device 1 is maintained while the upper and lower molds 2 are kept in a compressed state.
6 is inserted between the other rotating rolls 16a installed in the inside 6 and is drawn into the continuous fixing device 16 by the rotating rolls 16a.

FIG. 3 is a view taken in the direction of arrows BB in FIG. As shown in this figure, the continuous fixing device 16 includes an upper and lower chain conveyor device 17, a support frame 18, and a plurality of horizontal holding plates 19. The chain conveyor device 17 is composed of a number of roller chains 17b endlessly hung between horizontally spaced sprockets 17a at both ends. The rotation of the sprocket 17a causes each roller chain 17b to move horizontally in the width direction (to the right in this figure).
A horizontal holding plate 19 is attached to each roller chain 17b, and their opposing surfaces are synchronized with each other, and the upper and lower molds 2 are held in a compressed state during that time. Further, the opposing surface of the support frame 18 comes into contact with the roller chain 17a of the chain conveyor device 17, so that the outward force acting on the roller chain 17a is backed up and supported. Further, as shown in FIG. 2, the upper and lower support frames 18 are connected by tie rods 20, and the length thereof is adjusted by nuts 20a at both ends.
The distance between the opposing surfaces of the horizontal holding plate 19 can be adjusted.

A support frame 18 at a position where the mold 2 is drawn from the tandem rolling mill 14 (roll compressor 15) into the continuous fixing device 16 (position C in the drawing) has a concave portion facing away from the mold 2. A portion 18a is provided to facilitate longitudinal insertion of the mold 2 into this portion. FIG. 2, FIG.
In the above, the mold 2 inserted at the position C is
6a is held between the upper and lower horizontal holding plates 19 by retreating away from the mold 2. Further, the upper and lower horizontal holding plates 19 are rotated by the rotation of the rollers of the sprocket 17a.
Moves horizontally in the width direction (rightward in the figure) while holding the mold 2 and the soft material 1 therebetween, and after reaching the right end in FIG.
As shown in FIG. 1, it is discharged downward again in the figure.

According to the configuration of the present invention described above, the soft material 1 softened by the softening device 12 is sandwiched between the upper and lower elongated molds 2 and is vertically fed by a plurality of roll compressors 15 while being fed horizontally in the longitudinal direction. Since the soft material 1 is compressed in the direction, the soft material 1 can be supplied to the continuous fixing device 16 while being continuously compressed. Further, in the continuous fixing device 16, since the upper and lower molds 2 are sequentially moved in the width direction while being kept in a compressed state, by appropriately setting the feeding speed, the time until carrying out can be made longer than the time required for fixing. It can be set, fixed and reinforced wood can be continuously delivered. Therefore, softening, compression, and fixing can be continuously performed while maintaining the individual processing tact (fixing time), and the productivity of soft material reinforcement can be improved.

According to the configuration of the present invention described above, the upper and lower horizontal holding plates 19 for holding the upper and lower molds 2 in a compressed state.
However, since the roller chains 17a are attached to the roller chains 17a, and each roller chain 17a moves horizontally in the width direction while being backed up by the support frame 18, no special power is required for holding the mold 2 in compression. Therefore, the structure of the device is simplified, and the required power can be reduced.

The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the gist of the present invention.

[0017]

As described above, the soft material strengthening device of the present invention has excellent effects such as softening, compressing, fixing and strengthening a soft material having low utility value with high productivity. .

[Brief description of the drawings]

FIG. 1 is an overall plan view of a soft material reinforcing device of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view taken in the direction of arrows BB in FIG. 2;

FIG. 4 is a cross-sectional view of a mold and a soft material before and after compression.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soft material 2 Die 10 Soft material reinforcement apparatus 12 Softening apparatus 14 Tandem rolling mill 15 Roll compressor 16 Continuous fixing apparatus 16a Rotating roll 17 Endrel chain conveyor apparatus 17a Sprocket 17b Roller chain 18 Support frame 18a Depression 19 Horizontal holding plate 20 Tie rod

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Norio Iwanami 1-term Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishikawashima Harima Heavy Industries, Ltd. F-term in the Yokohama Engineering Center (reference) 2B230 AA27 BA01 BA17 EA19 EA20 EB05 EB13 EB29 EC10 EC14 EC24

Claims (2)

[Claims] 1. A softening device for heating a soft material by heating at a high temperature to soften the soft material, an upper and lower elongated mold for holding the softened soft material between the soft material and a vertical mold while horizontally feeding the mold in the longitudinal direction. A soft material reinforcement comprising: a plurality of roll compressors arranged in tandem for compressing a soft material therebetween, and a continuous fixing device for sequentially moving the upper and lower dies in a width direction while keeping the upper and lower dies in a compressed state. apparatus. 2. The continuous fixing device comprises an upper and lower chain conveyor device which moves horizontally in the width direction, a support frame for backing up a roller chain of the chain conveyor device, and a horizontal holding plate attached to the roller chain. The soft material reinforcing device according to claim 1, wherein the upper and lower molds in a compressed state are held between upper and lower opposed horizontal holding plates.