JPH0726083Y2 - Mold mover for sludge casting molding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a mold moving carriage used for sludge casting of ceramic products such as sanitary ware.

(Prior Art) U.S. Patent No. 3, for moving a part of a sludge mold which is conventionally composed of a plurality of mold parts used for sludge casting of ceramic products such as western-style toilet bowls, water tanks, washbasins, etc.
There is a technology of 663,681 specification.

This technique is an apparatus for forming a washbasin using a mold composed of two molds, in which two fixing columns 12 and 10 are erected on the outer side of the fixed mold fixed on the floor. Both fixed columns are connected by a horizontal beam 16, and a rail 22 is attached to the lower surface of the horizontal beam. The rail 22 is provided with a trolley 24 that travels along the rail 22, and is horizontally moved by a horizontal moving cylinder 40. The trolley 24 is provided with a vertically moving cylinder 34 for vertically moving a suspension die that suspends a molded body.

After the molded body is molded, the vertically moving cylinder is actuated to lift the molded body while holding it in the suspension mold and remove it from the fixed mold. After that, the horizontal moving cylinder is operated to move to a position deviating from a position right above the fixed mold, and the molded body is removed from the hanging mold on the carriage 90.

(Problems to be solved by the invention) However, in the technique of the above-mentioned US Pat. No. 3,663,681, the cylinder end of the vertically moving cylinder 34 on the side opposite to the side where the cylinder rod enters and leaves is fixed to the trolley 24 and is suspended at the tip of the cylinder rod. Since the holding die is hung, since the holding die is assembled with the fixed die, when the holding die descends, sideways movement is likely to occur and there is a risk of contact with the fixed die and damage. Also,
Unnecessary force may be applied to the cylinder rod or the end portion of the cylinder and the mounting portion of the trolley, and the cylinder may be damaged. Further, in order to align the hanging type and the fixed type with each other, not only the stopping accuracy of the trolley but also the mounting accuracy of the vertically moving cylinder to the trolley are required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a mold moving carriage for a sludge casting molding device, which eliminates the lateral displacement of a moving suspension type and can be easily mounted without requiring the accuracy of mounting the vertically moving cylinder.

(Means for Solving the Problem) The present invention relates to a mold moving carriage that moves by suspending a moving mold part of a sludge casting type that is composed of a fixed mold part and a movable mold part, wherein the movable mold carriage is , A cylinder unit for moving the movable die portion in the vertical direction is provided on a carriage frame with its piston rod tip facing downward, and a loose fit engagement for suspending the movable die portion at the piston rod tip portion And a plurality of guide bars are provided upright on the upper surface of the movable die section, and a guide sleeve through which the guide bars are inserted is provided on the carriage frame.

(Operation) The guide bar provided with a plurality of guide bars standing upright on the movable die part and the mold moving carriage while the movable die part is being lifted by the operation of the cylinder unit for moving the molded die up and down after the molded body is formed. Lateral runout is regulated by the guide sleeve through which is inserted.

Further, the tip end portion of the piston rod of the cylinder unit engages with the loose fitting engagement portion of the movable die portion to lift and suspend the movable die portion.

(Embodiment) An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of a slurry casting molding apparatus according to the present invention. The casting molding apparatus 1 comprises a molding station 10, a demolding station 20, and a mold moving carriage 30 that reciprocates between these stations. In the drawings, some members are omitted for convenience of showing the internal structure.

A common base 3 is bolted to the foundation 2, and a pair of bearing blocks 11 and 11 (the front bearing block is omitted) is placed on the upper surface of the right part of the base, and the frame for the forming station is mounted on these bearing blocks. 12 (hereinafter abbreviated as molding frame) are supported.

The molding frame 12 is composed of two vertical panels 12a, 12a and horizontal panels 12b, 12c connecting these at the upper and lower ends. The vertical panels 12a, 12a are separated from each other in the front-back direction of the drawing, and have projections on shafts 12d, 12d fitted to the bearing blocks 11, 11. Since the molding frame 12 has the above structure, the left and right surfaces of FIG. 1 are open.

Further, first rails 13, 13 are fixed to the forming frame 12.

A frame 21 for the demolding station is provided on the upper surface of the left side of the common mount 3.
(Hereinafter, it is abbreviated as a demolding frame body). The demolding frame 21 includes vertical beams 21a, 21a, a horizontal beam 21b, and horizontal beams 21c, 21c connecting the horizontal beam and a horizontal beam (not shown) adjacent thereto. Due to the action of the lateral beams 21c, 21c, the demolding frame 21 has great rigidity in the front and back direction of the drawing. Second rails 22, 22 are fixedly mounted on the demolding frame 21.

The right end 22a of the second rail 22 and the left end 13a of the first rail 13 are mating surfaces, and the mating surfaces are combined to form one rail. Further, this mating surface is cut into a so-called lotus, and the cutting direction is a direction that allows the forming frame 12 to tilt.

The mold moving carriage 30 traveling on the first rails 13, 13 and the second 22, 22 comprises a carriage frame 31, four wheels 32, and a motor 34 with a reducer for rotating one axle 33 forward and backward. It is a self-propelled trolley equipped.

A cylinder unit 35 is vertically mounted on the carriage frame 31, and a piston rod 35a of the cylinder unit 35 advances and retracts in the vertical direction.

The lower end tip portion 35b of the piston rod 35a abuts on the upper surface of an upper die 43 as a moving die portion of a slurry mold described later, and is loosely fitted with a loose fitting engagement portion 43b provided on the upper surface of the upper die 43. It is in. A plurality of guide bars 36 ... Stand on the upper surface of the upper mold 43.

These guide bars 36 penetrate the guide sleeves 37 provided on the bogie frame 31, respectively.

On the other hand, the mold moving carriage 30 is mounted on the cylinder unit 35 with the upper mold 43.
The upper mold 43 is characterized in that the center of the upper die 43 is formed by the guide bar 36 and the guide sleeve 37, which allows the installation accuracy of the cylinder unit 35 and facilitates the centering work of the unit. .

The slurry mold 40 of the present embodiment is formed by vertically stacking a bottom mold 41 as a fixed mold part and side molds 42, 42 as a movable mold part and an upper mold 43, and in particular, a body part of a Western-style toilet can be molded. Side mold 4
It is characterized in that 2, 42 are divided into two in the front and back direction of the drawing.

Further, the bottom mold 41 is bolted to the horizontal panel 12c of the molding frame 12, and the side molds 42, 42 are provided with projections 42a, 42a on their side surfaces, and these projections are hooked by, for example, the upper mold 43. It is configured so that it can be lifted with the attachments 43a and 43a.

In the figure, 14 is a tilting cylinder that tilts the molding frame 12, and 50 is a pantograph type lifting mechanism (not shown).
It is a conveyor that is equipped with and runs in the front and back direction.

The operation of the sludge casting molding apparatus having the above configuration will be described below.

FIG. 2 is a diagram for explaining the operation. First, the tilt cylinder 14 is operated to tilt the molding frame 12 at a predetermined angle (for example, 50 ° or less), then the mud discharge valve V2 is closed, and the mud supply valve V1 is opened to connect to the bottom of the bottom mold 41. Sludge is supplied to the mold 40 from a slurry supply source (not shown) via the supply / discharge hose T1. During the tilting operation, the first rail ends 13a, 13a are separated from the second rail ends 22a, 22a, so that the tilting of the forming frame 12 can be performed without any trouble.

The slurry mold 40 has a two-layer structure in which the outer layer is concrete and the inner layer is a porous layer having continuous pores, and a large number of water guiding passages are provided at the boundary between the inner and outer layers.

Therefore, after filling the cavity in the mold 40 with slurry,
Using a pump or a pressure booster (not shown), the sludge in the cavity is pressurized to about 5-10 atmospheres.

Since only water is allowed to pass through the inner layer, only the clay component grows on the surface of the inner layer and gradually forms a molded body. on the other hand,
The passing water is discharged to the outside through the drains of the hoses T2 ... and the three-way demolding valve V4. The valve 4 ...
Is provided in each of the plurality of hoses T2 ....

After a lapse of a predetermined time, the tilting cylinder 14 is operated again to set the tilt angle of the molding frame 12 to a predetermined angle (for example, 50 ° or less), the sludge supply valve V1 is closed, the mud discharge valve V2 is opened, and pressurized air is supplied. The valve V3 is opened and compressed air is supplied to the cavity to discharge the unattached slurry out of the mold. As a result, only the hydrated clay-like compact W remains in the mold 40.

After the completion of discharging the undeposited sludge, the sludge discharge valve V2 is closed, and compressed air is further supplied into the cavity for a predetermined time to reduce the water content of the compact W.

Next, the tilting cylinder 14 is operated in reverse to return the forming frame 12 to the shape shown in FIG. At this time, the first rail end 13a comes into contact with the second rail end 22a to form one rail.
Then, a dedicated three-way valve V4 for demolding each of the bottom mold 41 and the upper mold 43
... and switch to appropriate air pressure via the hose T2 to the bottom mold 41
When applied to the water conduit in the upper mold 43, this air moves the residual water in the mold to the boundary between the molded body W and the mold to form a water film on the boundary surface and form the bottom mold 41 and the upper mold 43. Separate the body W.

At the same time, the piston rod 35a is retracted.

First, the piston rod tip portion 35b separates from the upper surface of the upper die 43, and then contacts the loose fitting engagement portions 43b ...

The upper mold 43 separated from the molded body W is separated from the side molds 42, 4 during the ascending process.
Lift 2 These side walls 42, 42 rise while holding the compact W.

Therefore, the side molds 42, 42 function as a mold for conveying the molded body W.

The mold moving carriage 30 runs on the first and second rails 13, 22 to the center of the demolding station 20 while suspending the upper mold 43, the side molds 42, 42 and the molded body W (see FIG. 3). ).

Next, the piston rod 35a of the cylinder unit 35 is advanced to lower the upper mold 43, the side molds 42, 42, and the compact W,
Then, the receiving disc-shaped receiving tochi 51 placed on the conveyor 50 is raised until it comes into contact with the compact W.

Compressing air is blown into the water guiding passages in the side molds 42, 42 while supporting the molded body W by the receiving tochi 51, and the molded body W is released from the side molds 42, 42 as the molded body conveying mold, and then shown in the drawing. Open the side molds 42, 42 in the direction of the front and back of the figure by the side mold opening / closing means.

The formed body W is supported by the receiving tochi 51, descends by the action of the conveyor 50, and is horizontally conveyed in the depth direction of the drawing to face the next step.

On the other hand, the emptied side molds 42, 42 are closed by a side mold opening / closing means (not shown), and after the molds are assembled, they are pulled up together with the upper mold 43 by the piston rod 35a to the state shown in FIG. The mold moving carriage 30 travels on the rails 22 and 13 to the center of the molding station 10, and then lowers the upper mold 43 and the side molds 42 and 42.

Since the bottom mold 41 is waiting at the molding station 10, the side molds 42, 42 are first mounted on the bottom mold 41, and then the upper mold 43 is mounted on these side molds (see FIG. 1).

These slurry molds 40 are clamped by a piston rod 35a and a horizontal panel 12c of a molding frame. The side mold 42,42
Is clamped by a horizontal cylinder (not shown).

Now that the state has returned to the initial state, it is sufficient to tilt the molding frame 12 and pour the sludge.

The apparatus of this embodiment may be used for sludge casting using a gypsum mold or an unglazed mold, and is particularly useful for a sludge discharge pressure molding method.

(Effects of the Invention) As described above, according to the present invention, a plurality of guide bars are erected on the upper surface of the movable die part, and the guide sleeve through which the guide bars are inserted is provided on the mold moving carriage frame. When the mold part and the movable mold part are assembled into a mold, the movable mold part that moves up and down does not laterally shake, the molds are smoothly aligned, and the mold parts do not come into contact with each other to be damaged.

Further, since the rod tip end portion of the cylinder unit engages with the loose fitting engagement portion provided in the movable die portion, the cylinder unit is not required to be attached to the carriage frame with high accuracy.

[Brief description of drawings]

FIG. 1 is a front view of a sludge molding device according to the present invention, and FIG.
FIG. 3 and FIG. 3 are explanatory views of the operation. 1 …… Casting molding device 13,22 …… Rail 30 …… Mold moving carriage 31 …… Truck frame 35 …… Cylinder unit 35a …… Piston rod 36 …… Guide bar 37 …… Guide sleeve 40 …… Slurry mold 41… … Bottom mold (fixed mold part) 42 …… Side mold (moving mold part) 43 …… Upper mold (moving mold part) 43b …… Free fitting engagement part W …… Molded body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-53-36509 (JP, A) JP-B-49-36363 (JP, B1)

Claims (1)

[Scope of utility model registration request] 1. A reciprocating motion from a position directly above the fixed mold part to a position apart from the fixed mold part in a state where the movable mold part of a sludge casting mold composed of a fixed mold part and a movable mold part is suspended. A movable mold moving carriage, wherein the mold moving carriage is provided with a cylinder unit for moving the moving mold part in a vertical direction on a carriage frame such that a tip of a piston rod thereof faces downward, and the moving mold part has the above-mentioned structure. A loose fitting engagement portion for suspending at the piston lot tip is provided, a plurality of guide bars are erected on the upper surface of the movable die portion, and a guide sleeve through which the guide bar is inserted is provided on the carriage frame. A mold moving carriage of a sludge casting molding device characterized by the above.