JPH05131412A - Frame-pressing mechanism of pressure casting molding device - Google Patents

Abstract

PURPOSE:To remove the deformation of frames and to obtain an uniformly pressurized state on the whole surface of the frames by a method in which the chase of a molding machine is constructed into a rectangular chase and the frames are arranged therein, and then the frames are clamped by the diaphragm-pressing device caused to intervene between the frames and the chase of the molding machine. CONSTITUTION:The porous object formed of synthetic resin is arranged inside of the frame 3 by right side, the frame 4 of left side, the frame 5 of top surface and the frame 7 of bottom surface, and their outsides are covered with metallic capsules. In the state where the materials are positioned by knock pins 26 and knock pin-fitting holes 49 and are made integral, the materials are transferred to the inside of the chase 2 of a molding machine. A four surface diaphragm-pressing device 56 is caused to intervene between the frond and rear surfaces and the left and right surfaces of the frames 3, 4, 5, 7 and the chase 2 of a molding machine, and at downward side, an up and down pressing cylinder 8 is caused to intervene between the ceiling surface of the chase 2 of the molding machine and a bottom surface frame-placing holder, whereby the frames 3, 4, 5, 7 are pressed from left and right surfaces and top and bottom surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressing mechanism for a mold of a pressure cast molding apparatus for molding a raw material such as sanitary ware before firing.

[0002]

2. Description of the Related Art Sanitary ware represented by toilet bowls and washbasins
The material is inlaid and molded inside the mold by the slurry casting method. A technique of performing pressure casting at the stage of casting the molded body has been conventionally known. For example, JP-A-3-69313,
JP-A-3-67604 and JP-A-3-69304
Japanese Unexamined Patent Publication No. 3-81103, Japanese Unexamined Patent Publication No. 3-81103
67605 and Japanese Patent Laid-Open No. 3-83608.

[0003]

In the pressure casting molding apparatus, the mold is a right side mold 3 as shown in FIG.
And a left side mold 4, a top mold 5, and a bottom mold 7. The molds of the four surfaces are positioned and coupled by a knock pin 26 and a knock pin insertion hole 49, and the inside mold is formed. By injecting and pressurizing the slurry into the slurry, the moisture in the slurry is absorbed by the mold made of the absorptive synthetic resin, and the clay component of the slurry is adhered to the inner surface of the mold.

At this time, the method of pressing the mold constituted by the right side mold 3, the left side mold 4, the upper face mold 5 and the lower face mold 7 is conventionally a hydraulic cylinder to move the upper and lower parts.
This was done by pressing from a total of four surfaces, and from the two surfaces on the left and right. However, if it is only from the left and right and the upper and lower four surfaces in this manner, the protruding and protruding state of the form occurs due to the pressing force in the front and rear parts, and the right side form 3
At the joint between the left side form 4 and the form, the form may be deformed,
There was a problem such as damage. According to the present invention, the diaphragm pressing device is interposed between the front, rear, left and right surfaces of the mold and the molding machine frame, so that the pressing force is uniformly applied to the entire surface of the mold, and the front, rear, left and right surfaces are The pressing force is applied on average.

[0005]

The problems to be solved by the present invention are as described above, and the means for solving the problems will be described below. That is, in a pressure casting molding apparatus that forms a molded body by injecting sludge into the mold, the molding machine frame that supports the mold is configured as a square frame, and the mold is placed inside the molding machine frame. Then, the diaphragm pressing device is interposed between the mold and the molding machine frame, and the diaphragm is pressed by the diaphragm pressing device.

[0006]

Next, the operation of the present invention will be described. The right side surface mold 3, the left side surface mold 4, the upper surface mold 5, and the lower surface mold 7 are configured by arranging a porous body made of synthetic resin inside and covering the outside with a metal capsule. In the present invention, the mold is provided with the knock pin 26 and the knock pin fitting hole 49.
With the positioning integrated by the
It is transported to the inside of. Further, a diaphragm pressing device is provided between the front and rear surfaces and the left and right surfaces of the mold and the molding machine frame 2, and a vertical pressing cylinder 8 is provided below, and the vertical pressing cylinder 8 is extended. Thus, the up and down pressing is performed between the ceiling surface of the molding machine frame 2 and the lower surface form mounting table 13.

[0007]

EXAMPLES Next, examples will be described. FIG. 1 is a perspective view of an embodiment in which front and rear surfaces are constituted by a front open pressure body 12 and a rear open pressure body 11, FIG. 2 is a front view of the same embodiment of FIG. 1, and FIG. 3 is a similar embodiment of FIG. FIG. 4 is a perspective view of an embodiment in which the mold is inserted into the molding machine frame 2 from below, and FIG. 5 is a front and rear surface opening pressurizing body 12, 11 is slidably opened vertically and left and right surfaces are opened. FIG. 6 is a side view of the pressure casting molding apparatus of the embodiment shown in FIG. 5, and FIG. 7 is a side view of the pressure casting molding apparatus of the embodiment shown in FIG. FIG. 8 is a top view, FIG. 8 is a front view of the pressure casting molding apparatus of FIG. 5 with the left and right surface open pressing bodies 6 and 10 opened, and FIG. 9 is a side view showing the disassembled state of the mold.

First, the structure of the mold will be described with reference to FIG.
FIG. 9 shows a disassembled state of the form, in which the right side form 3 and the left side form 4 are first fitted with the knock pin 26 and the knock pin fitting hole 4.
The upper mold 5 at the upper portion is positioned and locked, and then the lower mold 7 is fixed. As a result, a mold having the same shape as sanitary ware, a tank, etc. is formed inside the mold. The mold has an inside made of a water-absorbent synthetic resin and an outside covered with a metal capsule.

Next, referring to FIG. 1, FIG. 2, and FIG. 3, the structure of the mold pressing mechanism of the pressure casting molding apparatus of the present invention in the front and rear open mold machine frame 2 will be described. The molding machine frame 2 has a front open pressure body 12 arranged on the front surface and a rear open pressure body 11 arranged on the rear surface. The front open pressure body 12 is pivotally supported by a pivot shaft 24 at the upper part, and the rear open pressure body 11 is
Is pivotally supported on the upper pivot shaft 23. Then, the rear open pressure body 11 is locked in the closed state by the lock mechanism 28. The front open pressure body 12 is locked in the closed state by the lock mechanism 27.

A rear pressing support plate 18 is fixed to the rear opening pressurizing member 11, and a front pressing support plate 19 is fixed to the front opening pressing member 12. A rear diaphragm pressing device 16 is interposed between the rear pressing support plate 18 and the mold, and a front diaphragm pressing device 17 is interposed between the front pressing support plate 19 and the mold.

Next, the structure of the side surface will be described with reference to FIG.
In FIG. 2, a drawing in which the front open pressure body 12 is removed is disclosed. The right side pressure support plate 20 is disposed on the side surface, and the left side pressure support plate 21 is disposed on the left side. A right diaphragm pressing device 14 is interposed between the right side pressing support plate 20 and the right side frame 3, and a left diaphragm pressing device 15 is interposed between the left side pressing support plate 21 and the left side frame 4. There is. Further, the upper surface mold 5 is in contact with the inner surface of the upper surface of the molding machine frame 2, and the diaphragm pressing device is not interposed in this portion. Further, the lower surface form 7 is placed on the lower surface pressing support plate 13, and the vertical pressing cylinder 8 is extendable from below the lower surface pressing support plate 13. Therefore, the upper and lower sides are pressed by the vertical pressing cylinder 8.

The right diaphragm pressing device 14, the left diaphragm pressing device 15 and the rear diaphragm pressing device 16
Compressed air is supplied to the front diaphragm pressing device 17 and the front diaphragm pressing device 17 to press the mold. With the above configuration, the mold is pressed from the front, rear, left, right, and upper and lower six surfaces.

In the embodiment shown in FIG. 4, the molding machine frame 2 cannot be opened at the front and rear surfaces. Therefore, when inserting the mold into the molding machine frame 2, the lower surface pressing support plate 13 on the lower surface of the molding machine frame 2 is opened by the vertical pressing cylinder 8 and the mold is inserted from the lower surface, and at the same time, the mold and the molding machine are inserted. Frame 2
A four-sided diaphragm pressing device 56 is inserted between and. The four-sided diaphragm pressing device 56 is formed in a rectangular tube shape, and the internal air passages are communicated with each other. Press on all four sides. The upper and lower surfaces are pressed by the upper and lower pressing cylinders 8 and the lower surface pressing support plate 13, and the inner surface of the molding machine frame 2 is pressed by pressing the mold.

Next, an embodiment shown in FIGS. 5, 6, 7 and 8 will be described. In FIG. 5, the pressure casting molding apparatus automatically arranges the mold conveyed by the conveyor inside the molding machine frame 2. The mold placed on the lower surface pressing support plate 13 at the center of the molding machine frame 2 is sandwiched from the left and right by the left surface opening pressing body 6 and the right surface opening pressing body 10, and the left surface opening pressing body 6 and the right surface opening pressing body The position of the upper end of 10 is locked and locked by the upper surface pressing body 9 descending from above. The left side open pressing body 6 has the lower end at the molding machine frame 2
The right side opening pressing body 10 is pivotally supported at its lower end by a pivot shaft 53. The position of the upper end of the left side opening pressing body 6 is pivotally opened and closed by the opening and closing cylinder 32, and the upper end of the right surface opening pressing body 10 is pivotally opened and closed by the opening and closing cylinder 33.

Locking hooks 9a and 9b are formed on the lower surface of the upper pressure member 9, and the locking hooks 9a and 9b are formed.
The upper ends of the left-side open pressing body 6 and the right-side open pressing body 10 are fitted and locked in the inside of b. In addition, the upper pressure body 9
Is guided by the vertical movement guide rods 37 and 38, and is vertically moved by the vertical pressing cylinder 8. And the upper pressure body 9
When the left side opening pressing body 6 and the right side opening pressing body 10 are locked, when the pressure is applied by the diaphragm pressing device, the escape lock cylinders 31 and 30 are provided so that the upper surface pressing body 9 does not escape upward. It is configured.

A left diaphragm pressing device 15 is interposed between the inside of the left side opening pressing body 6 and the form via a left side pressing support plate 21, and between the right side opening pressing body 10 and the form. The right diaphragm pressing device 14 is interposed via the right side pressing support plate 20. An upper diaphragm 52 is interposed between the upper mold 5 and the upper pressure body 9. The diaphragm pressing device is not arranged between the lower surface pressing support plate 13 and the lower surface form 7, the lower surface pressing support plate 13 functions as a carrying table, and the diaphragm pressing device is arranged between them. Since the height and position are not accurate, a diaphragm pressing device is not interposed between the lower surface pressing support plate 13 and the lower surface mold 7 in order to solve this problem. Compressed air is injected into the diaphragm pressing device to increase its volume, thereby pressing the mold. On the lower surface of the lower surface pressurizing body 1, a roller conveyor 29 and a conveyer conveyor composed of a push rod 34 are configured, and the mold placed on the lower surface pressing support plate 13 is a molding machine frame. It is moved to the inside of 2.

Next, the structure of the side surface will be described with reference to FIG.
The mold moves from the front surface into the molding machine frame 2 while being placed on the lower surface mold 7, so that the lower surface mold 7 on the roller conveyor 29 can be moved. To
In the embodiment of FIGS. 5 to 8, the front open pressure body 12 and the rear open pressure body 11 are configured to be slidable up and down. That is, the slide rails 42 are formed on the front and rear surfaces of the molding machine frame 2.
43 is provided upright, and inside the slide rails 42 and 43, the rollers 40 and 40 of the front open pressure body 12,
The rollers 41, 41 of the rear open pressure body 11 slide up and down. With this configuration, the front open pressure body 12 and the rear open pressure body 11 can be used when loading and unloading the mold.
Escape to an unobtrusive position.

Shock absorbers 35 and 36 are arranged on the lower surface of the lower surface pressing support plate 13, and the upper surface pressurizing member 9 is provided.
It is configured to absorb the shock generated when the pressure is applied. Further, a front pressing support plate 19 and a front diaphragm pressing device 17 are interposed between the joining surface of the left side mold 4 and the right side mold 3 and the front open pressure body 12, and the front side pressing support plate 19 and the front diaphragm pressing unit 17 are interposed. A rear surface pressing support plate 18 and a rear surface diaphragm pressing device 16 are interposed between the rear surface and the rear surface open pressure body 11.

[0019]

Since the present invention is configured as described above, it has the following effects. That is, first, since the mold for three-dimensionally molding the sanitary ware molding 1 has been conventionally pressed from the left, right, and upper and lower four surfaces, the right side mold 3 and the left side mold 4 are joined together. There was a problem that the mold was slightly opened on the front and back surfaces. On the other hand, in the present invention, since the front, back, left, right, and top are pressed from six surfaces, the seams of the molds do not tend to open and deformation of the molds can be prevented.

Secondly, since the pressing of the mold is performed not by the hydraulic or pneumatic cylinder as in the conventional case but by the diaphragm pressing device, the entire surface of the mold can be pressed, It is now possible to make the pressed state uniform over the entire surface of the mold.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment in which front and rear surfaces are constituted by a front open pressure body 12 and a rear open pressure body 11.

FIG. 2 is a front view of the embodiment of FIG.

FIG. 3 is a side view of the embodiment of FIG.

FIG. 4 is a perspective view of an embodiment in which a mold is inserted into the molding machine frame 2 from below.

FIG. 5 is a front view of an embodiment in which the front and rear surface opening pressurizing members 12 and 11 are slidably opened up and down, and the left and right surface opening pressing members are slightly rotated to open.

FIG. 6 is a side view of the pressure cast molding apparatus of the embodiment of FIG.

FIG. 7 is a top view of the pressure cast molding apparatus of the embodiment of FIG.

8 is a front view of the pressure cast molding apparatus of FIG. 5 with the left and right side open pressing bodies 6 and 10 opened.

FIG. 9 is a side view showing a disassembled state of the mold.

[Explanation of symbols]

 2 Molding machine frame 3 Right side mold 4 Left side mold 5 Top mold 6 Left open pressing body 7 Bottom mold 8 Vertical pressing cylinder 9 Top pressing body 10 Right opening pressing body 11 Rear opening pressing body 12 Front opening Pressurizing body 13 Lower surface pressing support plate 14 Right diaphragm pressing device 15 Left diaphragm pressing device 16 Rear diaphragm pressing device 17 Front diaphragm pressing device 56 Four-sided diaphragm pressing device

Claims (1)

[Claims] 1. In a pressure casting molding apparatus for forming a molded body by infiltrating sludge into the inside of a mold, a molding machine frame for supporting the mold is formed into a square frame, and a mold is formed inside the molding machine frame. A mold pressing mechanism for a pressure casting molding apparatus, characterized in that a frame is disposed, a diaphragm pressing device is interposed between the mold and the molding machine frame, and the diaphragm is clamped by the diaphragm pressing device.