JP2962330B2 - Slurry mold and method of pressing slurry mold - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slurry mold which is difficult to deform by press or a press technique for preventing the mold from being deformed and damaged.

[0002]

2. Description of the Related Art A technique for producing a molded product by press-injecting a slurry obtained by mixing water and porcelain clay into a mold called a slurry mold is as disclosed in, for example, Japanese Patent Publication No. 2-15364.

As shown in FIG. 2 of the publication, the slurry molds a, b, and c are pressed and held by hydraulic cylinders 5, 6 via press plates 7, 7 (this is referred to as "mold clamping"). .

FIG. 5 is a side view of a conventional slurry mold for a Western-style toilet bowl. A slurry mold 100 includes an upper mold 104, a left and right mold 105,
105, a lower mold 106, and a cavity (cavity) 103 for a molded body is formed therein.

[0005]

In FIG. 5, a press plate 1 is pressed from top to bottom by a piston rod 101 of a hydraulic cylinder.
02, the mold 100 is pressed, but the rigidity of the mold 100 against the vertical force is not uniform.
The portion A facing the cavity 103 has much lower rigidity than the other edge portions B and C (the mating surfaces of the upper mold 104 and the left and right molds 105 and 105). When pressed, press plate 1
02 near the joint with the piston rod bends downward,
Therefore, the portion A may bend downward, the upper mold 104 may be damaged, or the finished size of the molded body may be deteriorated.

Therefore, it is necessary to take measures such as increasing the rigidity of the slurry mold 100 or increasing the plate thickness of the press plate 102 to increase the rigidity. There are inconveniences.

Accordingly, an object of the present invention is to provide a slurry mold in which press deformation is less likely to occur, and to provide a pressing method which does not cause press deformation damage in the slurry mold.

[0008]

To achieve the above object, according to the present invention, there is provided to each of the surface to be mud漿鋳type press, attached to the press receiving member of a large ring-shaped when viewed from the press side, the flop
It is characterized in that the hollow portion of the less receiving member is made to substantially face the cavity inside the slurry mold.

[0009]

The press presses the mold through a press receiving member in which a portion substantially facing the cavity in the mold is hollowed out. That is, since the edge portion having high rigidity is pressed while avoiding the weak portion, the deformation of the mold due to the pressing becomes very small.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a slurry mold according to the present invention, in which a slurry mold 1 has a cavity (FIG.
), Into which slurry is injected from outside the mold and pressurized to obtain a desired molded body.

The slurry mold 1 comprises at least an upper mold 2 and a lower mold 3 so as to be separable.

A resin pad 5B as a press receiving member is laid on the upper surface (pressed surface) of the upper die 2 in a large ring shape in plan view, and a resin pad 6B as a press receiving member is also large on the lower surface of the lower die 3. They are arranged in a ring shape. Here, the ring shape does not refer to the resin pads 5B and 6B alone, but refers to the entire shape as a result of arranging the resin pads 5B and 6B.

FIG. 2 is a partially cutaway side view of the slurry mold according to the present invention, in which the resin pads 5B and 6B avoid the portion M facing the cavity 1a and are located outside the mold (in the horizontal direction in the figure).
It is characterized in that it is attached to the part. When the resin pads 5B and 6B are too close to the edge, a part of them may be hung on the M portion.

Next, a method for attaching the resin pad of the above-mentioned slurry mold will be described. First, an epoxy resin is mixed with an inorganic filler to prepare a considerably hardened liquid resin, which is filled in a tube or the like, and is squeezed out of the tube or the like so that the upper surface of the upper mold 2 and the lower mold 3 are pitched as shown in FIG. Are scattered on the lower surface of. Since the resin at this time has shape retention properties, the resin mass 5A.
6A...

FIGS. 3 (a) to 3 (c) are views for explaining the production of the resin pad of the present invention, and the slurry mold 1 in which resin blocks 5A..., 6A. Is laterally held by the press device 10. 3 (a) is albeit unclear because side view, tree Aburakatamari 5 A ..., 6A ... are arranged on the oval circumference in plan view.

As shown in FIG. 3 (b), a vinyl sheet 12 is spread on the surface plate 11 of the press device 10, and the vinyl sheet 12 is also placed on the resin blocks 5A... These vinyl sheets 12 and 12 are
A ..., 6A ... are prevented from adhering to the press platen 13 and the platen 11.

In this state, the slurry mold 1 is placed on the platen 11, the cylinder 14 is extended, and the press 13 thereof is lowered to a predetermined size H1 (FIG. 3 (c)).

In the dimension H1, the resin masses 5A, 6A,.
Is pressed into a substantially biscuit shape (resin pad 5 on a flat plate).
B ..., 6B ...). By holding in this state all day and night, the resin pads 5B ..., 6B ... on the flat plate are solidified.

By lifting the press plate 13 and removing the upper and lower vinyl sheets 12, 12, the slurry mold 1 shown in FIG.
Is completed.

The level of the upper surface of the resin pad 5B on the upper surface of the upper die 2 follows the press plate 13, and the resin pad 6 on the lower surface of the lower die 3
The level of the lower surface of B follows the surface plate 11. Therefore, the slurry mold 1
Is correctly pressed by the press device 10 and resists pressure casting of the slurry.

If the slurry casting operation is not busy, the resin pads 5B and 6B of the slurry mold 1 are formed by the actual press device 10 as described above. What is necessary is just to prepare a jig, and use this jig to substitute for the press device.

FIG. 4 is a view showing another embodiment of the slurry mold according to the present invention. The upper surface of the upper mold 2 and the lower surface of the lower mold 3 of the slurry mold 1 are each formed of a resin as an annular press receiving member having the same shape. Pads 8 and 9 are attached. The hollow portions 8a, 9a of the resin pads 8, 9 are located at positions substantially facing the cavities in the mold 1. In addition to molding the ring-shaped resin pads 8 and 9 by the method described with reference to FIG. 3, resin pads 8 and 9 manufactured separately by molding may be attached to the slurry mold 1.

The large annular resin pads 8 and 9 are provided.
May be attached to the press plate 13 and the platen 11 instead of the slurry mold 1.

That is, in the case where the relatively large cavity 1a such as the slurry mold 1 is built in and the rigidity of the mold itself cannot be increased so much, the pressing device 10
B, 6B, 8 and 9, cavity 1 of slurry mold 1
It is sufficient to press the edge portion away from a (claim 2).

At the pressure of the slurry, the resin mold 5 (resin pad 5
The hollow portion of B, 6B, 8, 9) swells slightly,
Since the slurry pressure is set considerably lower than the press pressure, the amount of swelling is acceptable.

Since the surface plate 11 usually has extremely high rigidity, the lower resin pads 6B and 9 may be omitted, or may be arranged at predetermined intervals in the vertical and horizontal directions, instead of being arranged in a ring shape. May be.

[0027]

As described above, according to the present invention, the inconvenience of deforming and breaking the slurry mold by pressing pressure is eliminated, the life of the slurry mold is extended, and the dimensional accuracy of the molded body is increased. Also, it is not necessary to increase the size of the slurry mold and the press device to increase the rigidity.

[Brief description of the drawings]

FIG. 1 is a perspective view of a slurry mold according to the present invention.

FIG. 2 is a partially broken side view of the slurry mold according to the present invention.

FIG. 3 is an explanatory view of the production of the resin pad of the present invention.

FIG. 4 is a diagram showing another embodiment of the slurry mold according to the present invention.

FIG. 5 is a side view of a conventional slurry mold for a Western-style toilet bowl .

[Explanation of symbols]

1: Slurry mold, 1a: cavity, 5B, 6B, 8, 9
... Press receiving member (resin pad) 10 Press machine

──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuyoshi Shimabayashi 2-1, 1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Tochiki Kiki Co., Ltd. (72) Koichi Kuwano Kokurakita-ku, Kitakyushu-shi, Fukuoka 2-1-1 Nakajima Totoki Kiki Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) B28B 1/00-1/54 B28B 3/00-5/12

Claims (2)

(57) [Claims] 1. A type mud漿鋳type which is pressed by the press-clamping, the mud漿鋳type to each of the surface to be pressed, by pressing receiving member of a large ring-shaped when viewed from the press side is attached, the press receiving A slurry mold, wherein a hollow portion of the member is a portion substantially facing a cavity inside the slurry mold. 2. A press for clamping a mold to clamp a sludge mold, wherein the press presses the mold through a press receiving member whose portion substantially facing a cavity in the mold is hollowed out. Press method of the slurry mold.