JP3027796B2 - Compression device for inorganic plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing device used for pressing an inorganic plate such as a wood cement plate.

[0002]

2. Description of the Related Art As shown in FIG.
Are upper platen (2), lower platen (3), clamp arm (4) hanging from four corners of upper platen (2), and bolts provided at four corners of lower platen (3). In order to clamp a plurality of inorganic plates with the clamping device (1),
Plywood (12 mm thick) (6), which is a heat insulating plate, is placed on the lower platen (3), and a plurality of the inorganic plate raw material mats (8) formed on the carrier plate (7) on the plywood (6). Place the sheet, and the upper platen
(2) and the lower platen (3) are pressed to press the mat (8), and then the clamp arm (4) of the upper platen (2) is attached to the lower platen.
In (3), the bolt mating holes (5) are clamped and fixed with bolts, and in such a fixed state, primary curing is performed to harden the inorganic plate raw material mat (8).

[0003]

[Problems to be Solved by the Invention] The above conventional clamping device
In the case of (1), the mat (8) often adheres to the pressing surface of the upper platen (2) during the pressing and hardening process of the inorganic plate raw material mat (8). ) And the mat (8)
Since it is difficult to release from the mold, a mold release agent is applied to the pressurized surface of the upper platen (2) by spraying or brushing and then pressed. However, the work of applying a release agent to the pressurized surface of the upper platen (2) involves dangers, and it takes time and effort to apply the release agent every time pressing is performed. Is a major obstacle in the production process of inorganic plates.

[0004]

Means for Solving the Problems According to the present invention, there are provided an upper surface plate (12) and a lower surface plate as means for solving the above-mentioned conventional problems.
(13), clamping means for the upper surface plate (12) and the lower surface plate (13)
(14), and four pushes are applied to the pressing surface (12A) of the upper platen (12).
Glue both side edges or the periphery of the ethylene fluoride sheet (16A)
Empty space between the pressurized surface and the ethylene tetrafluoride sheet (16A)
An object of the present invention is to provide a pressing device (11) for an inorganic plate having a gas layer (16B) interposed therebetween. Further, the pressing surface (12A) of the upper platen (12) and
Insulating plate (15) between the ethylene tetrafluoride sheet (16A)
The present invention provides a pressing device (11) for a
You.

[0005]

Function An inorganic plate raw material mat (20) is set between the upper stool (12) and the lower stool (13), pressed and fixed by the clamping means (14). At this time, the top mat (20) is the upper platen (12)
Pressure surface but in (12A) is in contact with, the the pressurized pressure surface (12A) 4 polytetrafluoroethylene sheet (16A) is interposed, moreover pressurizing of
Between the surface (12A) and the ethylene tetrafluoride sheet (16A)
Since the air layer (16B) is interposed , heat from the pressurized surface ( 12A)
After pressing the influence of it has been weakened, outermost upper mat
(20) is easily released from the pressing surface (12A) of the upper platen (12).

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in FIGS. 1 to 3 in which a pressing device (11) includes an upper platen (12) and a lower platen (1).
3) and a clamp arm (14) which is a clamp means hanging from the upper surface plate (12).
(14) is provided with a bolt through hole (14A), and the lower platen (13)
Also, a bolt through hole (13A) is provided correspondingly. Further, a plywood (12 mm thick) (15), which is a heat insulating plate, is provided below the pressurizing surface (12A) of the upper platen (12), and ethylene tetrafluoride is provided on the lower surface.
The iron plate (16) to which the sheet (16A) is bonded is placed,
It is fixed by bolts (17A) and nuts (17B). Further, a plywood (12 mm thick) (18), which is a heat insulating plate, is placed on the upper surface of the pressing surface (13B) of the lower platen (13). The tetrafluoroethylene sheet (1 6A) is bonded to the iron plate (16) only around as shown in FIG. 2, the tetrafluoroethylene sheet
An air layer (16B) is formed between (16A) and the iron plate (16).

[0007] To manufacture an inorganic plate, a raw material mixture mainly composed of cement and a wood reinforcing material such as a piece of wood is transferred to a transport plate (1).
9) Sprinkle on top to form mat (20),
A semi-dry method or a dry method in which (20) is cured and hardened while being pressed by the pressing device (11) is applied. In the pressing step according to the above method, a mat (20) formed on a transport plate (19) is stacked on a plywood (18) of a plurality of lower platens (13) and pressed to press the mat (20). , Clamp arm (1
4) bolt through hole (14A) and lower platen (13) bolt through hole (1
3A) and secure with bolts (21). In such a pressed state, for example, heating to a temperature of 50 to 85 ° C. and a humidity of 90
The mat (20) is cured by leaving it at about 95% RH for about 7 to 18 hours to cure the mat (20).
The uppermost and lowermost mats of the mat (20) are insulated by the plywood (15) and the plywood (18) during curing, and the upper platen (1
2) and the heat on the pressing surface (12A, 13B) of the lower platen (13)
(20) to prevent moisture from evaporating from the outer surface of the mat (20).
The air layer (16) between 6) and the ethylene tetrafluoride sheet (16A)
By B), the influence of heat from the pressing surface (12A) of the upper platen (12) is reduced, and the releasability of the uppermost mat (20) is further improved. After the mat (20) is cured and hardened into an inorganic plate, the clamp is released and the product is taken out from the pressing device (11). At this time, the uppermost product is a tetrafluoroethylene sheet (16A). ) Is very easy to release.

[0008] Other than this example, ethylene tetrafluoride sheet
(16A) may be adhered to the iron plate (16) only on both side edges as a sheet , or the ethylene tetrafluoride sheet (16A) may be directly applied to the pressing surface of the upper platen (12) without passing through the iron plate (16). (12A)
Be directly adhered not good. Also hardboard besides plywood as a heat insulating plate, although wood board may be used, such as particle board, the heat insulation plate is not essential.

[0009]

Therefore, in the present invention, the operation of applying the release agent to the pressing surface of the upper platen of the pressing device can be eliminated, and the production process of the inorganic plate is greatly streamlined.

[Brief description of the drawings]

 1 to 3 show one embodiment of the present invention.

Fig. 1 Side view before pressing

FIG. 2 is a sectional view of an iron plate

FIG. 3 is a side view of a pressed state.

FIG. 4 is a conventional side view.

[Explanation of symbols]

11 Pressing device 12 Upper platen 12A Pressing surface of upper platen 13 Lower platen 14 Clamp arm (clamping means) 15,18 Plywood (heat insulation plate) 16 Iron plate 16A 4Fluoroethylene sheet 20 Mat

Claims (2)

(57) [Claims] 1. An upper platen, a lower platen, and clamping means for the upper platen and the lower platen, and four pressurized surfaces of the upper platen.
Bonding the opposite side edges or circumferential edge of Tsu ethylene sheet, the pressurized
An apparatus for compressing an inorganic plate, wherein an air layer is interposed between a pressing surface and said ethylene tetrafluoride sheet. 2. A pressing surface and the tetrafluoride of the upper surface plate ethylene Shi
2. The inorganic plate pressing device according to claim 1, wherein a heat insulating plate is interposed between the pressing plate and the heat insulating plate.