JP3164129B2 - Pressing equipment for long wood - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long wood press working apparatus used for hardening long wood.

[0002]

2. Description of the Related Art In general, soft woods such as cedar, larch, and poplar are used in some parts as building materials, but their use is limited due to their low robustness.

[0003] In order to expand the range of use of such wood, studies have been conducted to improve the robustness of the wood. As a result of intensive research, the present applicant has found that wood is subjected to a high-temperature, high-pressure steam atmosphere. Press working is a very effective means for hardening wood,
Wood processing in which wood is hardened by placing it in a high-temperature and high-pressure steam atmosphere and heat-softening it, and then compressing and fixing it in a high-temperature and high-pressure steam atmosphere as described in Japanese Patent No. The device is proposed.

In the above-mentioned wood processing apparatus, a press die is appropriately disposed inside a processing tank made of high-strength steel or stainless steel so as to withstand high temperature and high pressure, and a press plate of the press die is mounted on a hydraulic cylinder. After the wood is set and loaded into the processing tank in a press mold, high-temperature and high-pressure steam is supplied into the processing tank to convert the wood into a high-temperature and high-pressure steam atmosphere. To heat-soften the wood with steam, and thereafter apply a mechanical compressive force to the wood to compress the wood to a predetermined cross-sectional area ratio, and then fix the wood. Things.

According to the above-mentioned wood processing apparatus, the wood is heated and softened in a high-temperature and high-pressure steam atmosphere in a processing tank and compression-molded, so that the bore portion inside the wood becomes small, so that it is hard and hard. In addition, the wood becomes strong and can be straightened even if it is bent, and the wood can be formed into a desired size and shape without performing lumber processing.

[0006]

By the way, in the above apparatus, the processing tank in which the wood is softened by heating, compression molding and fixing is heated by steam and thermally expanded.
When processing short wood of 0 mm or less, the length of the processing tank is short and the effect of thermal expansion is small, but when processing long wood of 2 m or more, the length of the processing tank becomes long, so thermal expansion Is greatly affected by Therefore, since the processing tank for processing long wood has a large thermal expansion due to heating, distortion and the like occur between the processing tank and the gantry supporting the floor, and an excessive load is applied, and the processing tub and the gantry are deformed. There was a problem of doing. Further, in the above-mentioned apparatus, there is a problem that the processing tank is deformed by the pressing load because the press load when compressing and forming the wood is applied to the processing tank. Also in the case of processing long lumber, the above problem is remarkable because a large press load is required. As a result, there has been no device capable of hardening long timber, and only a device capable of hardening long timber.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to provide a long wood which can prevent the deformation of a processing tank due to thermal expansion and press load and make the long wood hard. It is to provide a press working device.

[0008]

According to the present invention, in order to achieve the above object, a press die is arranged at the bottom of a press processing tank to which high-temperature and high-pressure steam is supplied via a press die receiving stand. A plurality of press cylinders for pressing the press-type press plate above the tank are provided,
A plurality of press receiving columns are erected from the floor below the press processing tank corresponding to the press die receiving table, and a roller is rotatably mounted on the press die, and the press die is pressed through this roller. In a long-length wood press working apparatus capable of reciprocating on a rail installed inside a processing tank, the press processing tank is slid on each of mounting frames installed on a floor at a plurality of locations in a longitudinal direction thereof. While slidably supported with a moving member interposed, a predetermined amount of clearance is provided between the press processing tank and the press receiving support,
An object of the present invention is to provide a long-length wood press working apparatus in which the rail can be moved up and down in a press working tank.

[0009]

According to the apparatus of the present invention, the press processing tank is slidably supported at each of a plurality of mounting bases installed on the floor at a plurality of locations in the longitudinal direction with a sliding member interposed therebetween.
A predetermined amount of clearance is provided between the press processing tank and the press receiving column, and the rail can be moved up and down in the press processing tank. Even if it hardly takes place, even if the press processing tank thermally expands in the longitudinal direction due to heating, the press processing tank can be freely extended in the longitudinal direction by the above-mentioned gap, and furthermore, it slides in the longitudinal direction with respect to the mounting base to thermally expand. And deformation due to press load and thermal expansion of the press processing tank can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is a schematic view of an apparatus for pressing long wood according to the present invention. The apparatus of the present invention has a cylindrical press working tank made of high-strength steel or stainless steel to withstand high temperature and pressure. A lid (1a) is attached to the opening of (1) so as to be able to be opened and closed in a sealed manner by a suitable means, and a vacuum pump (3) is connected to the press processing tank (1) via a pipe (2). A steam supply device (not shown) is connected via a pipe (4), and the air in the press processing tank (1) is sucked and exhausted by a vacuum pump (3) through a pipe (2) to exhaust the press processing tank. (1) The inside of the press working tank (1) is made to be in a vacuum state, and high-temperature and high-pressure steam is supplied from a steam supply device through a pipe (4) into the press working tank (1) to thereby form a high-temperature high-pressure steam atmosphere. To be in a state To have.

As shown in FIG. 2, a pair of left and right mounting frames (5) and (5) are mounted on the press working tank (1) at a plurality of locations in the longitudinal direction, for example, at six locations. (5) The (5) is slidably supported on the floor by attaching the Teflon sheet (7) to each of the mounting frames (6) installed on the floor.

As shown in FIG. 3, a press-type pedestal (8) is disposed in the press-working tub (1). It is attached to the bottom through a mounting flange (9), and a predetermined amount (2 mm or less) of clearance (s) is provided below the mounting flange (9), and the press receiving support (10) is erected on the floor surface. I have.

A press die (11) is mounted on the press die receiving table (8), and the press die (11) has a bottom die (12) and a bottom die (12). A pair of side dies (13) and (13) arranged opposite to each other so that the distance can be adjusted, and a pressing plate (14) arranged between the pair of side dies (13) and (13).
Engagement grooves (15) are formed at a predetermined pitch in the vertical direction on the opposing surfaces of the pair of side dies (13) and (13), and the side dies (15) are formed on both upper surfaces of the holding plate (14). A detent mechanism (1) equipped with a stopper pin (18) that engages with the retaining groove (15)
6) is attached.

As shown in FIG. 4, the press die (11) has rollers (19) and (19) on a pair of side dies (13) and (13), respectively.
The roller (19) (1
By supporting two rails (20) and (20) arranged in parallel inside the press processing tank (1) through 9), 2
It is installed so that it can reciprocate along the book rails (20) and (20). The two rails (20) and (20) are respectively fixed to the stamping boxes (21) and (21) fixedly penetrating the peripheral wall of the press working tank (1) by the metal (22), the packing (23) and the packing. It is attached to the upper end of a spindle (25) (25) that is airtightly inserted through a presser (24) and supported so as to be able to move up and down.
The lower end of 5) is attached to a mounting plate (27) connected to a lifting cylinder, for example, a piston rod (26a) of an air cylinder (26), and the piston rod (28a) of the air cylinder (28) is expanded and contracted. Accordingly, the press die (11) moves up and down via the mounting plate (27) and the spindles (25) and (25), thereby moving up and down the press die (11) via the rollers (19) and (19).

A pressing cylinder, for example, a hydraulic cylinder (28) is mounted on each of the pair of mounting frames (5), (5), and a piston rod (28a) of the hydraulic cylinder (28) is mounted in a press working tank (5). The tip of the piston rod (28a) is airtightly inserted through a packing (31) and a packing presser (32) into a stuffing box (30) attached to the ceiling of the 1) through an attachment seat (29). Part of the piston rod (28a) into the press work tank (1).
3) is attached integrally.

Next, press working of wood (W) in the apparatus of the present invention configured as described above will be described.

The wood (W) to be treated is previously placed between a pair of side molds (13) and (13) on the bottom mold (12) of the press mold (11), and is detented on the wood (W). The holding plate (21) to which the mechanism (16) is attached is placed and set on the press die (18), and the wood (W) is heated and softened by high-temperature and high-pressure steam in a preheating tank.

The wood (W) heated and softened in the preheating tank is set in the press die (11) and is disposed inside the press processing tank (1) via the rollers (19) and (19). Along the two rails (20) and (20) thus obtained, it is carried into the press working tank (1) and is arranged at a predetermined position above the press die receiving stand (8). Thereafter, the piston rod (26a) of the air cylinder (26) is retracted, and the spindles (25) and (25) are lowered via the mounting plate (27), whereby the rails (20) and (20) and the rollers ( 19) The press die (11) is lowered via (19) and placed on the press die receiving table (8), and then only the rails (20) and (20) are further lowered to press die (11). After being further separated, the lid (1a) of the press processing tank (1) is closed, and wood (W) is loaded into the press processing tank (1). Thereafter, if necessary, when the wood (W) is not sufficiently heated and softened, high-temperature and high-pressure steam is supplied from a steam supply device into the press working tank (1) to press the work tank (1). By setting the inside to a high-temperature and high-pressure steam atmosphere state, the wood (W) is further heated by the high-temperature and high-pressure steam to be sufficiently heated and softened. At this time, even if the press processing tank (1) is thermally expanded by heating, a pair of left and right mounting frames (5) and (5) in which the press processing tank (1) is mounted at a plurality of positions in the longitudinal direction are placed on the floor. Teflon sheet (7) on each mounting stand (6) standing upright
The pair of left and right mounting frames (5) and (5) can slide against the mounting base (6) to absorb thermal expansion. Also, since a predetermined amount of clearance (s) is provided between the press processing tank (1) and the press receiving column (10), the press processing tank (1)
Can be freely stretched in the longitudinal direction by the gap (s). If necessary, the air in the press processing tank (1) is evacuated by the vacuum pump (3), and the press processing tank (1) is exhausted.
Is evacuated.

When the wood (W) is sufficiently heated and softened in this way, the piston rod (28) of each hydraulic cylinder (28)
Pressing plate (14) placed on wood (W) set in press die (11) with holding seat (33) attached to the end of each piston rod (28a) by extending a)
Are pressed all at once from above, whereby the wood (W) is compression molded to a predetermined cross-sectional area ratio. At this time, the press load when compressing the wood (W) is almost applied to the press receiving support (17) via the press die support (8) and the mounting flange (9), and the press work tank (1) There is almost no pressing load. In addition, since the rails (20) and (20) are lowered and separated from the rollers (19) and (19) of the press die (11), the pressing load is also applied from the rails (20) and (20) to the pressing tank (1). Does not affect). Therefore, it is possible to prevent deformation of the press processing tank (1) due to a press load when compressing the wood (W).

When the wood (W) is compression molded to a predetermined cross-sectional area ratio by each hydraulic cylinder (28) through a press die (11), the piston rod (28) of each hydraulic cylinder (20) is compressed.
a) is retracted, and the presser seats (33) attached to the distal ends of the respective piston rods (28a) are simultaneously raised. At this time, when the presser seats (33) are simultaneously raised, the presser plate (14) of the press die (11) is moved upward together with the presser seat (33) due to the recovery force of returning to the original shape of the wood (W). When the wood (W) is compressed to a predetermined cross-sectional area ratio, the stopper pin (18) of the detent mechanism (16) attached to the holding plate (14) is automatically moved to the side mold ( 13)
Since the retaining plate (14) of the press die (11) is not lifted, the state in which the wood (W) is compression molded is maintained.

When the wood (W) is compression-molded in this way, the lid (1a) is opened to open the press working tank (1), and at the same time, the piston rod (26a) of the air cylinder (26) is extended. Mounting plate (27), spindle (25)
(25), rails (20) (20) and rollers (19) (1
After lifting the press die (11) through the 9), the press die (11) is moved through the rails (2) through the rollers (19) and (19).
0) By moving backward along (20), the compression-formed wood (W) is carried out of the press processing tank (1) together with the press die (11), and the compression-formed wood (W) is compressed in that state. W) is fixed for a predetermined time. When the compression molded wood (W) is fixed, it is removed from the press die (11) and the processing is completed. When the compression-molded wood (W) is fixed, the restoring force for returning to the original shape does not work. Therefore, the stopper pin (18) of the detent mechanism (16) is connected to the side mold (13). The latch can be easily released from the latch groove (15), and the wood (W) can be easily removed from the press die (11).

According to the apparatus of the present invention, the press processing tank (1)
The press receiving column (10) is erected from the floor corresponding to the press die (11) and the press die receiving base (8) installed at the bottom of the press processing tank (1). The rails (20) and (20) for reciprocating the (11) via the rollers (19) and (19) can be moved up and down to the press processing tank (1), so that the wood (W) can be compressed and formed. Since the press load is almost applied to the press receiving column (10) and hardly applied to the press processing tank (1), deformation of the press processing tank (1) can be prevented.

According to the apparatus of the present invention, a pair of left and right mounting frames (5) and (5) each having the press processing tank (1) mounted at a plurality of locations in the longitudinal direction thereof are respectively provided upright on the floor surface. Teflon sheet (7) on mounting frame (6)
And a predetermined amount of clearance (s) is provided between the press processing tank (1) and the press receiving column (10), so that the press processing tank (1)
Even if is heated and thermally expanded, the press processing tank (1) freely extends in the longitudinal direction due to the presence of the gap (s), and the pair of left and right mounting frames (5) and (5) is mounted on the mounting base (6). , The thermal expansion can be absorbed, so that there is a thermal expansion between the press processing tank (1) and the mounting base (6) and the press receiving support (10) supporting the press processing tank (1) on the floor surface. This prevents the press work tank (1) from being deformed without imposing excessive load. Therefore, even if the press processing tank (1) is lengthened, there is no deformation due to thermal expansion, and even long wood (W) of 2 m or more can be processed.

[0025]

As described above, according to the present invention, since the press support column is erected from the floor at the bottom of the press processing tank, the press load when compressing and molding wood is received by the press support column. Thus, deformation of the press processing tank can be prevented, and durability can be maintained.

In addition, since the press processing tank is slidably mounted on the floor surface and a gap is provided between the press processing tank and the press receiving support standing upright from the floor surface.
Even if the press processing tank thermally expands due to heating, the press processing tank can freely stretch in the longitudinal direction due to the gap, and can slide against the floor surface to absorb the thermal expansion. In addition, an unreasonable load due to thermal expansion is not applied to the press processing tank, and deformation can be prevented even if the press processing tank is lengthened. As a result, there is no deformation due to thermal expansion even if the press processing tank is lengthened to align with long wood.
What could be hardened only short wood less than m
This makes it possible to harden long lumber, and has the effect of having a large practical value.

[Brief description of the drawings]

FIG. 1 is a schematic view of a long wood press working apparatus according to the present invention.

FIG. 2 is a drawing showing a structure for supporting a press processing tank on a floor surface.

FIG. 3 is a longitudinal sectional view of a main part of the device of the present invention.

FIG. 4 is a longitudinal sectional view of a main part of a different part of the device of the present invention from FIG.

FIG. 5 is a drawing showing a state when wood is compressed by the apparatus of the present invention.

[Explanation of symbols]

 W Wood 1 Pressing tank 5 Mounting frame 6 Mounting frame 7 Teflon sheet 8 Press die receiving stand 9 Mounting flange 10 Press receiving support 11 Press die 12 Bottom die 13 Side die 14 Holding plate 16 Hook groove 16 Detent mechanism 18 Stopper pin 19 Roller 20 Rail 25 Spindle 26 Elevating Cylinder (Air Cylinder) 28 Press Cylinder (Hydraulic Cylinder) 33 Holder

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B27K 5/00 B27K 5/06 B27M 1/02

Claims (1)

(57) [Claims] A press die is disposed at a bottom portion of a press processing tank to which high-temperature and high-pressure steam is supplied via a press die receiving table, and a pressing plate of the press die is pressed above the press processing tank. A press cylinder is further provided, and a plurality of press receiving posts are erected from the floor corresponding to the press die receiving table below the press processing tank, and a roller is rotatably mounted on the press die, In a long-length wood press working apparatus in which a press die can be reciprocated on a rail installed inside a press working tank via the rollers, the press working tank is placed on a floor surface at a plurality of locations in a longitudinal direction thereof. A sliding member is slidably supported on each of the installed mounting bases with a sliding member interposed therebetween, and a predetermined amount of clearance is provided between the press working tank and the press receiving column, and the rail is A long-length press machine, which can be moved up and down in a press tank.