JP3285679B2 - Hydraulic material molding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming a hydraulic material such as cement mortar.

[0002]

2. Description of the Related Art As a conventional hydraulic material forming apparatus,
JP-B-2-38362 and JP-A-60-24550
There is one disclosed in Japanese Patent Publication No. 7 (1995). As shown in FIGS. 5A and 5B, these hydraulic material forming apparatuses have a part where the upper mold 101 or the lower mold 102 is joined to the frame 103, that is, a so-called parting part 104. And a plane perpendicular to the opening and closing direction of the mold. And
After press molding, open the mold, either upper and lower molds move in the horizontal direction, pass the molded product to the receiving mold, return to the original position to perform press molding again, and the upper and lower molds fit together And press forming.

[0003]

However, in the above-described conventional apparatus for manufacturing a cement mortar molded product, when the molded product is transferred to a receiving mold and then the upper and lower dies are fitted again, the product is slightly moved in the horizontal plane direction. If it is deviated, there is a problem that the sealing of the parting portion becomes insufficient and a gap is generated, and burrs are formed on the molded product. In particular, as shown in FIG. 6, the widths A,
A case where B is different will be described. In this case, the mold is provided with a cavity 106 as shown in the plan view of FIG.
Are formed. FIG. 8 is a cross-sectional view of the molding die taken along line XX.
It was shown to. When any of the upper and lower molds moves in the direction of arrow S shown in FIGS. 6 and 7 and is re-engaged, a displacement occurs. The fitting of the upper and lower molds at the position of line XX in FIG. As a result, a gap 107 is formed between the upper and lower molds as shown in FIG.
The molding material that has entered 7 hardens into burrs.

Accordingly, the present invention provides a mold having a structure capable of automatically correcting the displacement when the upper and lower molds are fitted to each other so as to form a high-quality cement mortar without burrs. The purpose is to provide goods.

[0005]

According to a hydraulic material molding apparatus of the present invention, a hydraulic apparatus is configured such that a molding die composed of an upper mold, a lower mold, and a frame is opened and closed by a press device. In the apparatus for molding a material, a means is adopted in which the opening / closing surface of the mold is inclined with respect to the opening / closing direction of the pressing device.

[0006]

According to the present invention, the above means are taken, so that the forming die composed of the upper die, the lower die, and the frame is opened by a press device,
After taking out the molded product, when closing and fitting again, on the opening / closing surface of the molding die inclined with respect to the opening / closing direction by the pressing device, the horizontal direction which is a component of the vertical force by the pressing device is used. The force is generated. Since the horizontal force acts on the upper and lower molds, the fitting is performed at a correct position while correcting a slight displacement.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a molding apparatus for a hydraulic material according to the present invention.

Embodiment 1 FIG. 1 is a side sectional view of a forming die of a hydraulic material forming apparatus according to Embodiment 1. In FIG. 1, 1 is an upper mold, 2 is a fixed lower mold, 3 is a frame, and a cavity 4 formed by these is filled with a cement mortar material as a hydraulic material. Reference numeral 5 denotes a vacuum suction hole connected to a first vacuum suction device (not shown), 6 denotes a draining iron plate disposed at a boundary between the upper mold 1 and the cavity 4, and 7 denotes a mesh filter cloth. Reference numeral 8 denotes a press device for vertically moving the upper die 1 to open and close the forming die.

In the part where the upper mold 1 and the frame 3 are joined, that is, at the so-called parting part 9, the joining surface 91 on the upper mold side and the joining surface 93 on the frame body side are both inclined surfaces. These joining surfaces 91 and 93 are not perpendicular to the pressing direction of the pressing device 8 but are inclined. In a hydraulic material molding apparatus provided with a molding die having such a structure, when the cavity 4 is filled with a cement mortar material and a vacuum suction device (not shown) is operated, the moisture of the cement mortar material is filtered. The suction is performed through the drain holes of the cloth 7 and the draining iron plate 6, and the suction is performed through the vacuum suction holes 5. After the water is dehydrated, the press device 8 is operated to raise the upper mold 1 in a state where the molded product is adsorbed, and is moved in a horizontal direction by a moving device (not shown), and is transferred to a receiving mold (not shown). hand over. Then, it returns to the position of the lower mold | die 2 again, the press apparatus 8 is operated, the upper mold | type 1 is moved down, and it fits with the lower mold | type 2 and the frame 3.

At this time, the upper die 1 is pressed by the press device 8.
Is pressed against the frame 3 by a vertical force. That is, a vertical force acts on the joint surface 91 on the upper mold side and the joint surface 93 on the frame body side. However, these joining surfaces 91,
Since 93 is inclined with respect to the vertical direction, a horizontal component force is generated. In the left part of the parting part 9, a leftward component force F <b> 1 is applied to the upper mold 1 by the parting part 9.
In the right portion of the upper mold 1, a rightward component force F2 is generated in the upper mold 1. Then, the resultant force of the component force F1 and the component force F2 acts on the upper mold 1, so that the resultant force is minimized.
The upper mold 1 moves slightly. Therefore, when the upper mold 1 and the frame 3 are slightly misaligned in the parting part 9,
The force acting on the upper mold 1 is generated to correct the displacement. In this way, by inclining the joining surface in the parting portion 9, the positional deviation at the time of fitting the mold is automatically corrected, so that no gap is generated and the sealing is sufficient. Therefore, no burr is generated due to the displacement of the parting part, and a high quality cement mortar molded product can be obtained.

Embodiment 2 FIG. 2 is a side sectional view of a molding die of a molding apparatus for hydraulic material according to Embodiment 2. In this embodiment, the joining surface 91A on the upper die side and the joining surface 9A on the frame side in the parting part 9A.
The inclination direction of 3A is opposite to that of the first embodiment. According to this embodiment, in addition to the same effects as those of the first embodiment, the thickness of the upper die 1A can be increased to increase the strength.

Third Embodiment FIG. 3 is a side sectional view of a molding die of a hydraulic material molding apparatus according to a third embodiment. In this embodiment, the frame 3B is connected to the upper die 1B. This embodiment is suitable for molding a highly viscous hydraulic material. Fourth Embodiment FIG. 4 is a side sectional view of a molding die of a hydraulic material molding apparatus according to a fourth embodiment. In this embodiment, the vacuum suction holes 5C
Is provided on the lower mold 2C side. In this embodiment, since the vacuum suction hole 5C is not opened in the upper mold 1C, an effect is obtained that it is suitable for molding a molded article having a complicated upper surface.

[0013]

According to the hydraulic material molding apparatus of the present invention, since the opening / closing surface of the molding die is inclined with respect to the opening / closing direction of the pressing device, a horizontal component force is generated,
Since the upper and lower molds are fitted at the correct position while being corrected for some misalignment, the sealing on the opening and closing surfaces does not become insufficient, and burrs do not occur, so that a high quality molded product can be molded. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a molding die according to a first embodiment of a hydraulic material molding apparatus of the present invention.

FIG. 2 is a side sectional view of a molding die according to a second embodiment of the hydraulic material molding apparatus of the present invention.

FIG. 3 is a side sectional view of a molding die according to a third embodiment of the hydraulic material molding apparatus of the present invention.

FIG. 4 is a side sectional view of a molding die according to a fourth embodiment of the hydraulic material molding apparatus of the present invention.

FIG. 5 is a sectional view of a conventional hydraulic material molding apparatus.

FIG. 6 is a perspective view of an example of a cement mortar molded product.

FIG. 7 is a plan view showing an example of a molding die for molding the cement mortar molded article of FIG.

FIG. 8 is a sectional view taken along line XX of the mold of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper die (molding die) 2 Lower die (molding die) 3 Frame (molding die) 4 Cavity 5 Vacuum suction hole 8 Press device 9 Parting part 91 Joint surface on upper mold side (opening / closing surface) 93 Joint on frame side Surface (opening / closing surface)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-7-124929 (JP, A) JP-A-5-245811 (JP, A) JP-A-5-4207 (JP, A) JP-A-60-1985 245507 (JP, A) JP 2-38362 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) B28B 3/02 B28B 7/00

Claims (1)

(57) [Claims] 1. A molding die comprising an upper die, a lower die and a frame,
In a molding device for hydraulic material configured to be opened and closed by a press device, the molding device is characterized in that the opening and closing surface of the mold is a surface inclined with respect to the opening and closing direction by the press device. apparatus.