JPH08281494A - Press controlling method in board forming of building material - Google Patents

Abstract

PURPOSE: To clearly mark a pattern on a building material formed in a board of a wall material, etc., and to form an article of an excellent quality. CONSTITUTION: This is a press controlling method of a board forming of a building material which presses the raw material filled in a die 2 and forms it in the board. Balance supporting devices 23 to support a slide 24 keeping the balance are arranged at four corners of a bed 22 of a press device 18, in a pressing process to compress the raw material inside the die 2, the slide 24 is supported keeping the balance with the balance supporting device 23, the slide is speed-controlled by 0.1 to 20mm/sec and the board is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press control method for board molding of building materials such as wall materials in the field of construction.

[0002]

2. Description of the Related Art Conventionally, board molding of wall materials for building materials is
A predetermined material is dehydrated and preformed into a predetermined plate shape by a papermaking method or an extrusion method, and then the preformed material is main-formed by a press and patterned on the surface to obtain a desired product.

In a conventional press forming machine for patterning the surface of a board, the two cylinders mounted on the crown control the elevator to move up and down in equilibrium. It was molded with the lower limit of positioning.

[0004]

However, the above-mentioned press machine is inferior in dynamic accuracy, and it is difficult to obtain the required parallel accuracy at a high speed of 0.5 mm / sec or more. In addition, because of the mechanical stopper, the filling amount of the raw material of the mold is unstable, so that the product with constant surface pressure cannot be obtained, and the quality varies, so that a high quality product cannot be stably molded. there were.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and in order to solve the above problems, a raw material for a building material filled in a mold is pressed to form a board. In a board forming press machine for building materials, equilibrium supporting devices for equilibrating slides are arranged at four corners of the bed of the press machine, and in the pressure forming process of compressing and molding the raw material in the mold, Another object of the present invention is to provide a press control method for board molding of a building material, which is characterized in that a slide is supported by an equilibrium supporting device in an equilibrium state, and the slide is speed-controlled at 0.1 to 20 mm / sec to perform board molding.

[0006]

When the building material is press-molded by the pressing device of the present invention, the equilibrium supporting device for supporting the slide in equilibrium is arranged at the four corners of the bed of the pressing device, so that the slide is accurately balanced by the equilibrium supporting device. It can be supported by press molding.

Since the slide can be supported in equilibrium by the above-mentioned equilibrium support device and the slide can be speed-controlled at 0.1 to 20 mm / sec in the pressure forming process of compressing and forming the raw material in the mold, the board can be formed. Dynamic accuracy is obtained, it is easy to control the speed accurately from low speed to high speed, and it is possible to press-mold a product having a constant surface pressure and uniform quality.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments. FIG. 1 and subsequent figures show one embodiment of the present invention.
As shown in FIG. 1, a dehydration molding apparatus 1 for building materials such as wall materials includes a molding die 2 as a raw material filling station 3, a primary molding station 4 for dehydration preforming, and a secondary molding for main molding such as patterning on the surface. A molding station 5, a product take-out station 6, and a mold cleaning station 7 are provided so that press molding can be performed automatically.

As shown in FIGS. 2 and 3, the mold 2 is framed in a rectangular shape with a predetermined size, and wheels 8 for traverse are provided on both sides thereof.
, And the wheels 9 for vertical movement are also attached to both ends, and the carriage 2 is mounted on a rail (not shown) so that it can run freely.

The bottom of the rectangular frame 11 of the mold 2 is shown in FIG.
As shown in the figure, the locking member 12 is attached so as to project slightly inward, and the lower mold 14 having the dehydration filter 13 mounted on the upper surface side is internally mounted so as to be in close contact with the mold 2 and locked to the locking member 12. Then, the lower mold 14 is mounted and conveyed as described above, and can be carried into and out of the primary molding press 17 and the secondary molding press 18 so that it can be press-molded into a predetermined shape.

Further, as shown in FIGS. 2 and 3, a brush roll 19 is attached to a part of the die 2 and is rotatably connected to a traverse wheel 8 by a gear mechanism 20 or the like, and an upper die is provided. The bottom of 21 is touched so that it can be cleaned.

Particularly, in the secondary molding station 5, as shown in FIG. 4, equilibrium supporting devices 23 of the output hydraulic servo control cylinders are arranged at the four corners of the bed 22 of the secondary molding press 18 of the main molding. The mold 2 which has been dehydrated and preformed in the primary molding station 4 is positioned so that the slide 24 can be press-formed while the slide 24 is equilibrium supported by the equilibrium support device 23.

Then, as shown in FIG. 3, the upper plunger 2
The upper mold 21 having a dehydration filter 26 at the bottom is attached to the lower part of the mold 5, and the mold 2 is mounted on a bed 22 or a bolster (not shown) attached to the bed 22.
The raw material is pressed against the upper mold 21 through a slide 24 for equilibrium support, and a desired pattern is formed on the product by the pressing material 27 of the upper mold 21 having an appropriate uneven pattern. There is.

The equilibrium support device 23 can be the same as that used in a conventional FRP press, and is a hydraulic servo valve.
By controlling the speed of 0.1 mm to 20 mm / sec in synchronism, controlling the position and controlling the pressure, the product is pressed to a uniform and uniform thickness so that a clear pattern can be formed on the surface.

As a method of the above press control, for example, as shown in FIG. 5, the slide 24 is moved down to a predetermined position at a high speed and equilibrically supported by the equilibrium support device 23, depending on the product.
While performing velocity control at 1 mm to 20 mm / sec, that is, while maintaining dynamic equilibrium, position control or pressure control is performed to press the net force of the press from which the supporting force of the equilibrium supporting device 23 is subtracted to perform molding. ing.

In position control, when the molding output is within the predetermined tolerance and the slide 24 is within the predetermined parallel tolerance at the lower position of the equilibrium support device 23, as shown in FIG.
It is determined that the molding is acceptable.

Even in pressure control, the equilibrium supporting device 23 detects four lower limit setting positions by the predetermined net output of the press, as shown in FIG. 6, and the molded product slides within the allowable range 24. Is within a predetermined parallel tolerance, it is determined that the molding is acceptable.

Therefore, it is possible to form a board of building material in parallel with high accuracy, and even if the filling amount of the raw material of the mold is unstable and there is some variation, the surface pressure is constant and the strength of the material is uniform. Good product can be molded.

Since the slide can be supported in equilibrium and the board can be formed, the pattern on the surface of the board can be precisely and sharply obtained, and a good quality product can be obtained.

After molding in this way, even if the mold is released,
As shown in FIG. 5, the slide 24 is lifted by the equilibrium support device 23 to a predetermined height outside the range where the product is not affected, and the mold 2 is carried out from the secondary molding press 18 and sent to the product take-out station 6. The molded product in the mold 2 is knocked out and taken out.

The mold 2 thus knocked out of the product and discharged is carried out to the side with the traverse wheels 8 mounted on the rails and sent to the mold cleaning station 7 as shown in FIG. The cleaning device (not shown) is used to clean the product.

The washed mold 2 is conveyed, sent to the first raw material filling station 3 as described above, and the raw material is filled again, and the press molding is sequentially performed as described above. If necessary, the mold can be replaced with a desired mold by a mold exchanging device (not shown).

Although the main forming press of the secondary forming station has been described above, the same can be applied to the primary forming press of the dehydration preforming of the primary forming station.

Further, on the above-mentioned implementation side, since the plate-shaped material preformed by the primary molding press for dehydration preforming is put into the secondary molding press for main molding without being released from the mold, the slurry is used. It is preferable since a cheap raw material can be used, the secondary molding is easy, and the peripheral surface can be uniformly molded in a close contact with the mold. However, the present invention is not limited to this example, and can be appropriately diverted to other board forming presses based on the spirit of the present invention.

【The invention's effect】

As described above, according to the present invention, since the equilibrium supporting devices for equilibrating the slides are arranged at the four corners of the bed of the pressing device, the slides can be accurately supported by the equilibrium supporting device in equilibrium. Can be press molded.

In the pressure molding process of compression molding the raw material in the mold, the slide is supported in equilibrium by the above-mentioned equilibrium supporting device, and the slide is subjected to speed control of 0.1 to 20 mm / sec for board molding. Dynamic accuracy is obtained, speed control is easy from low speed to high speed with high accuracy, and a product with a constant surface pressure and uniform quality with a clear pattern on the surface can be press-molded.

Further, the press device is position-controlled and pressure-controlled via the equilibrium support device, and a predetermined acceptance / rejection criterion is set, so that good quality products of uniform quality can be mass-produced.

[Brief description of drawings]

FIG. 1 is an overall schematic layout diagram of an embodiment of the present invention,

FIG. 2 is a plan view of the above mold,

FIG. 3 is a side cross-sectional view of the above mold,

FIG. 4 is a side view of the above secondary molding press,

FIG. 5 is the same stroke-time, pressure control net output-time diagram,

FIG. 6 is a flow chart for determination upon completion of molding in the above press control method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Dehydration molding apparatus 2 ... Mold 4 ... Primary molding press 5 ... Secondary molding press 22 ... Bed 23 ... Equilibrium support device 24 ... Slide

Claims (5)

[Claims] 1. A press device for board molding of building material, comprising: pressing a raw material for a building material filled in a mold to form a board, in which equilibrium support for supporting slides in equilibrium at four corners of the bed of the pressing device. In the pressure molding process in which the device is installed and the raw material in the mold is compression-molded, the equilibrium supporting device supports the slide in equilibrium,
A press control method for board molding of a building material, characterized in that the board is molded by controlling a speed of 20 mm / sec. 2. The press control method for board molding of a building material according to claim 1, wherein the slide is equilibrium supported by an equilibrium support device, and pressure molding with patterning is performed on the surface of the raw material filled in the mold. 3. The press control method for board molding of a building material according to claim 1, wherein the slide is supported by the equilibrium support device in an equilibrium state and the mold is released. 4. The building according to claim 1, wherein the pressure forming output of the press device is a net output obtained by subtracting the supporting force of the equilibrium supporting device, and the net output is controlled to be within a predetermined range. Control method for board molding of wood. 5. The lower limit position of the press machine at the time of pressure molding is 4
The press control method for board molding of a building material according to any one of claims 1, 2, and 4, wherein control is performed such that the equilibrium support device at the corner is within a predetermined lower limit setting range.