JP2803268B2 - Slip casting machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a slurry casting machine for casting and casting slurry.

(Prior art) In a molding line where the entire mold moves to another station for demolding and mold assembly while holding the molded article in the mold after molding, the assembled mold is loaded into the molding machine. In order to remove the cast from the molding machine, or to remove the mold from which casting has been completed, a fork with a lift mechanism is provided on the mold carrier, the fork lifts the mold, the fork enters the molding machine, and the lift descends. And retreat only the fork,
The mold was being delivered to the molding machine.

Also, since the entire mold moves, the slurry is supplied to the casting space of the casting mold at the time of molding, and the slurry supply and discharge ports provided in the casting mold are provided for discharging the undeposited slurry from the casting gap. The outlet was attached and detached.

(Problems to be Solved by the Invention) However, since the weight of the mold is large, rigidity is required for the fork of the mold carrier, and the structure is complicated. Also.
In order to attach / detach the slurry supply / drainage pipe, a dedicated attachment / detachment device was required, and the molding machine was complicated.

Therefore, an object of the present invention is to load a mold into a molding machine, simplify a mold carrier cart for removing a mold from the molding machine,
An object of the present invention is to provide a slurry casting molding machine which simplifies a mechanism of the molding machine.

(Means for Solving the Problems) In order to achieve the above object, the present invention comprises a machine frame rotatably supported on a machine base via left and right axes, and a vertical press means provided on the machine frame. Further, the press means is provided with a slurry supply / discharge port.

(Operation) After the mold is loaded into the molding machine by a fork, the mold is lifted from the fork by a vertical pressing means and pressed, and the slurry supply / discharge port of the mold and the slurry supply / discharge port of the molding machine are joined. .

(Example) An example of the present invention is described below with reference to the accompanying drawings.

FIG. 1 is a front view of a slurry casting molding machine according to the present invention.

The sludge cast molding machine 1 (hereinafter simply referred to as "molding machine 1") has a machine frame 3 rotatably supported by a pair of machine stands 2, 2 standing from a foundation or a solid base. . That is, the machine casing 3 has a square shape as viewed from the front, and a left axis 4 and a right axis 5 extend horizontally from the left and right as shown in the figure, and these left and right axes are connected to the plummer blocks 6 on the machine bases 2, 2. , 6.

These left and right shafts 4 and 5 are hollow shafts, a slurry supply / discharge tube 7 is provided on the left shaft, and a hydraulic tube 8 is provided on the right shaft 5. 7a and 8a in the figure are rotary pipe joints.

Further, the right shaft 5 is engaged with the hydraulic rotary ram 9. This hydraulic rotating ram is a rotating means for arbitrarily rotating the right shaft 5 left or right by hydraulic pressure.

As vertical pressing means, it is composed of cylinder units 10, 10, which are mounted upward in the lower part of the machine frame 3, and a cradle 14 which is stretched over the ends of the piston rods 10a, 10a. Slurry supply / discharge ports 16 and 17 are open to this receiving stand 14, and the tip of the slurry supply / discharge tube 7 is connected thereto. In addition, pressurized air is supplied to the casting space for discharging undeposited slurry. An air supply port (not shown) is also open, and the ends of the air tubes 15, 15 are connected.

An upper die holding plate 11 is fixedly provided at an upper portion in the machine frame 3, and side cylinders 12 and 12 as left and right pressing means are attached to side portions thereof. 13,13 are installed.

The hydraulic tube 8 is connected to the cylinders 10, 10, 12, 12.

The mold 20 is held between the cylinders 10, 10, 12, 12.

FIG. 2 is an exploded view of the mold. The mold 20 includes a lower mold 21 and left and right molds 22, 23 and a molding convex attached to a transport plate 28 in order to obtain a body molding W1 of a Western-style toilet bowl. The middle mold 24 and the upper mold 25 are combined so as to obtain the middle mold 24 having the part 24a projecting downward and the rim molded body W2 of the Western style toilet.

FIG. 3 is a view showing a combination type, and FIG. 4 is a sectional view taken along line AA of FIG. As shown in FIG. 4, the compacts W1, W2
The slurry supply / discharge passages 26 and 27 communicating with the upper part of the cavity are formed in the mold, and the slurry supply / discharge port 2 opened on the lower surface of the plate 28 is formed.
Connected to 9,30. The slurry supply / discharge ports 29, 30 are joined to the slurry supply / discharge ports 16, 17 opened in the receiving stand 14 during molding.

The mold 20 has a two-layer structure in which the outer layer of each cavity molding portion is concrete and the inner layer is a porous layer,
A water passage is provided at the boundary between the inner and outer layers or in the inner layer.

 The operation of the molding machine described above will now be described.

The mold 20 assembled as shown in FIG. 3 is loaded into the molding machine 1 of FIG. 1 from the front with a fork (not shown). The mold 20 is advanced by moving the cylinder units 10 and 10 together with the pedestal 14, and is vertically held between the pedestal 14 and the upper holding plate 11 above. Then the fork is retracted.

On the other hand, the left and right dies 22, 23 are sandwiched between the side cylinders 12, 12.

Next, the hydraulic rotary ram 9 is started, and the machine casing 3 is rotated clockwise by approximately 90 ° when viewed from the right side in FIG. 1 (arrow in FIG. 5).

FIG. 5 shows the rotated mold 20, in which the slurry is supplied from the slurry supply / discharge tube 7 to the slurry supply / discharge passages 26, 27.

The slurry supply / discharge channel 26 injects slurry into the cavity from the lower part of the cavity for the molded body W1, and the slurry supply / discharge path 27 injects slurry into the cavity from the lower part of the cavity for the molded body W2.

The injected slurry causes the clay to deposit on the mold forming surface, and excess moisture permeates through the porous layer and is discharged out of the mold.

After a predetermined time has elapsed, the undeposited slurry is supplied from the air tubes 15, 15 to the respective cavities, and the undeposited slurry is supplied from the slurry supply / discharge paths 26, 27 and the slurry supply / discharge ports 29, 30, 16, 17 to supply / discharge slurry. It is discharged out of the cavity via the tube 7.

Reverse the hydraulic rotating ram 9, return the machine frame 3, and
20 is reversed in the direction of the arrow in FIG.

When the position returns to the position shown in FIG. 1, the pressing force of the cylinders 10, 10, 12, and 12 is removed, and the free mold 20 is taken out of the machine frame 3 with a fork and sent to the mold separating step.

In the present embodiment, the slurry supply / discharge tube 7 and the hydraulic tube 8
Through the left and right shafts 4 and 5 so that no twisting force acts on the tubes 7 and 8 so that the machine frame 3 can be easily rotated from the initial position to an arbitrary angle, for example, 90 to 180 degrees. it can.

As a result, the mold can be inclined to a position most suitable for the supply and discharge of the slurry, so that the entrainment of air into the cavity during the supply of the slurry can be prevented, and the discharge of the undeposited slurry can be reliably performed. Also, the design of the mold is facilitated without being restricted by the supply and discharge of the slurry.

The rotating means of the machine frame 3 is not limited to the hydraulic rotating ram, but may be, for example, a motor with a speed reducer, a cylinder with a lever, or the like.

(Effects of the Invention) As described above, the present invention lifts the mold by means of the vertical pressing means provided on the machine frame and transfers the mold, so that a lift mechanism is not required for the fork of the mold carrier and the structure of the fork is reduced. It's easy. Also, since the press means is provided with a slurry supply / discharge vinegar value, it is joined with the mold supply / discharge port at the same time as pressing in the vertical direction, eliminating the need for a dedicated attaching / detaching device and simplifying the structure of the molding machine. It is effective.

[Brief description of the drawings]

 FIG. 1 is a front view of a slurry casting machine according to the present invention, FIG. 2 is an exploded view of a mold, FIG. 3 is a view showing a combination mold, FIG. FIG. DESCRIPTION OF SYMBOLS 1 ... Slurry cast molding machine 2 ... Machine stand 3 ... Machine frame 4 ... Left axis, 5 ... Right axis 9 ... Hydraulic rotating ram as rotating means 20 ... Mold 16, 17 ... Slurry Outlet

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B28B 1/00-1/54 B28B 11/00-19/00

Claims (2)

(57) [Claims] In a molding line in which the entire mold moves to another station for demolding and mold assembly while holding the molded article in the mold after molding, the molding machine is rotatably supported on a machine base via left and right shafts. Machine frame,
And a means for vertically pressing a mold provided on the machine frame. 2. A slurry casting and molding machine according to claim 1, wherein said press means is provided with a slurry supply / discharge port.