JP2002086426A - Molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding apparatus enabling stable release or transfer of a molded body after compression molding in the case when an air supply passage for ensuring an air flow for dewatering is provided. SOLUTION: In the molding apparatus 1, a molding material S1 is injected into a cavity formed between the respective molding surfaces 4a and 5a of top and bottom forces 4 and 5 disposed above and below and the molding material is compressed by clamping these forces 4 and 5, while the water contained in the molding material S1 is sucked and removed. The molding surface 4a of the top force 4 is provided with openings 40 for extracting and sucking the water which function to dewater and deaerate the injected molding material S1 and also to suck and hold the molded body with vacuum for release or transfer of the molded body obtained after molding. The molding apparatus 1 is provided besides with the air supply passage 45 which ensures the air flow for dewatering and can be shut off or regulated for the air flow by a solenoid valve 46 or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding apparatus for compression molding roof tiles and wall panels by using an inorganic plastic material such as clay, cement mortar or ceramic material as a molding material.

[0002]

2. Description of the Related Art Conventionally, a molding material is poured into a cavity formed between molding surfaces arranged vertically, and the upper and lower molds are clamped to compress the molding material while compressing the molding material. A molding device for sucking and dewatering water contained in the molding material. The molding surface of the upper mold is used to squeeze and deaerate the cast molding material and to separate the molded body obtained after molding. There is known a device provided with a squeezed water suction port which also serves to hold and hold a formed body by vacuum in a mold or for transfer (for example, Japanese Utility Model Publication No. Sho 56-42011, Japanese Patent Publication No. Sho 58-41169). Publication, JP-A-2000-19031
No. 4 gazette).

[0003] With such a molding apparatus, even if a sufficient amount of water is added to the molding material, molding and squeezing can be efficiently performed in a short time by high-pressure compression molding. Later, the molded body can be transferred to a desired position by horizontally moving the upper die while holding the molded body by sucking from the water suction inlet, so that molding can be performed with good production efficiency. it can.

[0004] In such a molding die,
In order to perform dehydration more efficiently, a filter member made of a wire mesh and a dewatering cloth is mounted on a molding surface having a water extraction suction port.

[0005]

However, in the molding apparatus having such a structure, if an air supply passage for securing a dewatering air volume is provided separately from the water suction suction port, the molded body will be closed when the mold is released. In some cases, the molded product may fall and break. This is because the air supply from the air supply passage and the air supply from the gap between the filter member and the molding material are united at the time of mold release or transfer after compression molding, and the vacuum pressure required for adsorption is reduced. This is because the adsorption by the upper mold is not stable.

Accordingly, the present invention provides a method for squeezing and deaeration of a cast molding material, and adsorbing and holding the formed body by vacuum in order to release or transfer the obtained formed body after molding. In a molding apparatus provided with a water suction suction port that also serves as a function of performing, the mold release or transfer of the compact after compression molding is stably performed in the case where an air supply passage for securing a flow rate for dehydration is provided. It is an object of the present invention to provide a molding apparatus that can perform the molding.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the invention according to claim 1 is directed to a molding material that is formed between cavities formed above and below each other. A molding apparatus for compressing the molding material by clamping the upper and lower molds and sucking water contained in the molding material to dehydrate the molding material. A squeezing water suction port that also serves to suck and hold the molded body in vacuum for releasing or transferring the molded body obtained after molding while squeezing and degassing the molded material. In the molding apparatus provided, the molding apparatus is provided with an air supply passage that can shut off or adjust the air flow for securing the air flow for the dehydration. Here, the air supply passage may be directly communicated with the water suction suction port to secure an air volume for dehydration, and is also opened toward the molding surface, and the water suction suction is performed through the molding surface. By supplying air from the mouth, an air volume for dehydration may be secured.

According to the invention as set forth in the first aspect of the present invention, the molding apparatus is provided with an air supply passage for securing an air flow for dewatering, and the air supply passage can shut off or adjust the air flow. If the vacuum pressure required for suction during mold release or transfer after compression molding is reduced, the air volume of this air supply passage can be cut off or adjusted, so that the vacuum pressure required for suction can be maintained. This stabilizes the release or transfer of the compact after compression molding.

The invention according to claim 2 is the molding apparatus according to claim 1, wherein the air supply passage is provided with an automatic valve that is opened and closed in accordance with a molding cycle.

According to this structure, in addition to the function and effect described in the first aspect, the air supply passage is opened before compression molding to secure an air flow required for water squeezing, and is closed and controlled after compression molding. Thereby, when water is not required, the automatic valve is closed, and the vacuum required for adsorption can be secured.

According to a third aspect of the present invention, the amount of air supplied from the air supply passage can be adjusted to a desired degree of vacuum in accordance with the degree of vacuum of the water suction port. The molding apparatus according to claim 1, wherein the molding apparatus is controlled to:

According to this structure, in addition to the function and effect of claim 1, when the degree of vacuum of the water suction suction port is low, the amount of air is adjusted in conjunction with the degree of vacuum of the water suction suction port. By adjusting the degree of vacuum of the squeezing suction port, adsorption can always be performed stably. If this air volume adjustment is used at the time of compression molding, the air volume sent from the air supply passage can always be adjusted to the optimum air volume in accordance with the molding conditions such as the type of molding material and the change of the molding cycle.

According to a fourth aspect of the present invention, the upper mold is provided so as to be able to move the molded body to a receiving stand by adsorbing the molded body on the molding surface after the molding material is subjected to high compression molding and being horizontally movable. The molding apparatus according to any one of claims 1 to 3, wherein

According to this structure, in addition to the functions and effects described in any one of the first to third aspects, the upper die can adsorb the molded body to the molding surface after compression molding of the molding material and can move horizontally. Since it is provided, the obtained molded body is horizontally moved and can be transferred to the receiving table.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5, reference numeral 1 denotes a molding apparatus according to the present invention. The molding apparatus 1 includes a high-pressure compression means 2 having a high-pressure compression mechanism, a piston and the like, and a lower end of the high-pressure compression means 2. An upper die 4 fixed via an upper die mounting plate 3,
The upper die 4 is roughly constituted by a lower die 5 disposed opposite to the upper die 4, and the upper die 4 is configured to be able to move up and down with respect to the lower die 5 based on the operation of the high-pressure compression means 2. A raw material input means 38 such as a hopper is disposed facing the hopper.

The upper die mounting plate 3 is fixed to a horizontal moving means 12 comprising a cylinder and a piston 12a.
When the piston 12a expands and contracts, the upper mold mounting plate 3
At the same time, the upper die 4 is movable in the horizontal direction (x direction).

A receiving table 11 for receiving a compact S in parallel with the molding apparatus 1 is arranged at a lower position where the piston 12a is contracted. The pedestal 11 can be raised and lowered to a desired height toward the conveyed compact S by elevating means 39 including a cylinder and a piston 39a.

Thus, the compact S adsorbed on the upper mold 4
Can be transferred to the receiving table 11, and the upper mold 4 is
And can be returned in alignment with the position facing.

On the other hand, an upper mold frame 8 is provided around the upper mold 4, and the upper mold frame 8 is provided to be able to move up and down by a piston 10 of a cylinder 9. When the piston 10 is lowered, the periphery of the molding surface 4a of the upper die 4 is surrounded by the upper mold frame 8, and when the piston 10 is raised, the periphery of the molding surface 4a is exposed.

A lower mold frame 36 is provided around the lower frame 5, and the lower mold frame 36 is provided with a piston 37 of a cylinder 37.
a is provided on the outer periphery of the lower mold 5 so as to be able to move up and down. At the time of molding, as shown in FIGS. 1 and 2, the lower mold frame 36 is raised with respect to the lower mold 5 to form the molding material S.
1 Is formed therein. After the molding, for example, as shown in FIG. 3, the piston 37a is lowered so that the outer peripheral surface of the molded body S that has been in contact with the lower mold frame 36 is configured to be exposed. It is said that the release of S is easy.

The molding surface 4a of the upper mold 4 has a structure shown in FIGS.
As shown in the figure, a large number of water suction ports 40,... Arranged and distributed in the vertical and horizontal directions are formed, and the water suction ports 40 are water collection ports 42 opened to one side through a water suction path 41. Is connected to a water collecting pipe (not shown), and this water collecting pipe is connected to a vacuum blower (not shown). When a tile or the like is manufactured, the molding surface 4a is formed with irregularities according to the irregularities of the tile, but details of the irregularities are omitted in this figure.

A plurality of air supply ports 43 are formed between the water suction ports 40 by appropriate arrangement. The air supply ports 43 are, for example, two water suction ports. The air distribution passage 44 is inserted and arranged between the passages 41, 41.
And an air supply passage 45, and is connected to an air supply source via an electromagnetic valve 46.

As shown in FIG. 9, the solenoid valve 46 supplies air to the air supply passage 45 or shuts off the air in conjunction with the molding cycle. That is, this solenoid valve 4
Numeral 6 is opened at the time of molding (at the time of high compression operation of the high-pressure compression means 2), and is automatically closed at the time of opening of the high-pressure compression means 2 (at the time of mold release, at the time of conveyance, at the time of material input). Is controlled.

FIG. 8 shows details of an example of the molding surface 4a. In this figure, the molding surface 4a is provided with irregularities conforming to the irregularities of the roof tile. The water suction suction port 40 is opened on the concave surface, and the air supply port 43 is open on the convex surface. However, the arrangement and number of the water suction suction port 40 and the air supply port 43 are not limited to this, and can be freely set. Just design. In FIG. 8, a thread groove is formed in an opening 45a opened to one side from the air supply passage 45, and a solenoid valve 46 is detachably mounted in the opening 45a. Thus, the supply and cutoff of air from the air supply port 43 are controlled.

The filter member 13 is detachably mounted on the molding surface 4a in FIG. 8 by a pressing plate 16 (not shown) which is tightened by bolts or the like. This filter member 1
3 is, for example, a wire mesh 15 attached to the molding surface 4a,
A dewatering cloth 14 attached to the surface of the wire mesh 15 by polymerization.
It is composed of Thereby, a gap is ensured by the mesh of the wire mesh 15 existing between the dewatering suction port 40 and the dewatering cloth 14. Further, as the dewatering cloth 14, for example, a cloth woven from abrasion-resistant, tensile, and compression-resistant fibers is used. The woven fabric of the texture according to the particle size of the molding material included in the above is used.

Thus, the molding material S1 is formed by the upper mold 4 and the lower mold 5. Molding material S1 by high compression The water squeezed from is efficiently stored in the gap of the wire mesh 15. Then, by the action of the dewatering cloth 14, the molding material S
1 Is prevented from flowing out of the upper mold 4 even if the composition particles are fine.

The air supplied from the air supply source is distributed by the air distribution passage 44 through the solenoid valve 46 and the air supply passage 45 which are opened at the time of molding, and is supplied to each air supply port 43,
... This air is supplied to the molding surface 4a, passes through the filter member 13, and is sucked into the water suction suction port 40. At this time, the water stored in the wire net 15 is transported to the water suction suction port 40. I do.

This water is collected from the water collecting port 42 to the water collecting pipe via the water drawing and suction passage 41, whereby the water for the molding material S1 can be efficiently squeezed. After molding, this solenoid valve 46
Is automatically shut off, air supply from the air supply port 43 is shut off, and a vacuum pressure required for suction during release or transfer is ensured. In addition, this water extraction suction passage 4
An appropriate water supply facility may be provided in the upper mold 4 in order to prevent the first clogging.

1 to 5, reference numeral 51 denotes a desired number of injection holes provided on the molding surface 5a of the lower die 5, and the injection holes 51 are connected to the upper die 4 by jetting gas. The molded body S formed by the lower mold 5 can be released without losing its shape. The control of the amount of gas ejected from the injection hole 51 is performed by controlling the tip 53 of the rod-shaped valve member 52 that rises or descends in the injection hole 51. Opening and closing is performed.

As the rod-shaped valve member 52, for example, a piston of a cylinder 6 arranged below the lower mold 5 is used.
This rod-shaped valve member 52 is formed such that the injection hole 51 of the lower mold 5 is formed at the tip 53 To form the molding surface 5a of the lower mold 5, but when the molded body S is released, the rod-shaped valve member 52 is lowered by the driving of the cylinder 6, so that the injection hole 51 becomes the tip 53 Descends and is released.

In order to form the compact S from the molding apparatus 1 configured as described above, the opening and closing of the solenoid valve 46 is controlled according to a molding cycle as shown in FIG.

First, in a raw material charging step (FIG. 1), for example, a molding material S1 kneaded by a mixer after adding water to an aggregate such as clay, cement or sand to which water has been added. Is injected into the cavity (molding space) formed by the lower mold frame 36 and the molding surface 5a at the ascending position by the raw material introducing means 38.

This molding material S1 For example, in addition to inorganic plastic materials that can be plasticized by adding water and dried and hardened, such as clay, cement mortar, gypsum, etc., powders made of inorganic plastic materials, such as ceramic materials, can be added to water. In addition to the above, an inorganic plastic material which exerts a certain degree of plasticity by applying high pressure without adding water can be used. The molding material S1 may contain a reinforcing fiber, an inorganic filler, a thickener, and the like.

Next, in the pressing step (FIG. 2), the high-pressure compression mechanism of the high-pressure compression means 2 is driven, and the upper mold 4 is moved to the lower mold 5.
The molding surface 4a (if there is a filter member 13, the surface of the filter member 13) is moved downward toward the molding material S1. Going into contact with. At this time, the upper mold frame 8 provided on the outer periphery of the upper mold 4 is lowered with respect to the upper mold 4 by the cylinder 9 being driven and the piston 10 being extended, and the outer frame of the cavity is moved to the upper mold frame 8. And the lower mold frame 36 are integrally formed.

Next, the pressing force of the piston (not shown) is increased to increase the molding material S1. Is performed under high-speed piston driving, and the molding material S1
However, high compression is performed by the upper mold 4 and the lower mold 5. Along with this compression, the vacuum blower is driven and the molding material S1 is formed through a water suction port 40 provided on the molding surface 4a on the lower surface of the upper mold 4.
Is rapidly communicated into the upper mold 4 and discharged to the outside of the upper mold 4 through the water suction suction passage 41. This squeezing is performed by the molding material S1. Even if the water contains more than necessary, it is done efficiently.

The pressing force is further increased, and the second stage of compression is performed to form a compact S. The compression force at this time is 120
kg / cm ² , so that the molded body S can be molded into a desired shape and the molded body S is hardly collapsed. Also in this second stage compression, the vacuum blower is driven, and the second stage water squeezing can be performed on the molded body S from the water squeezing suction port provided in the molding surface 4a of the upper die 4. Thereby, the shape collapse at the time of adsorbing and transferring the compact S is eliminated. In this press process, two-stage compression is performed.
One or more stages may be used.

Next, when the compact S is formed, the electromagnetic valve 46 is closed, and the process proceeds to a releasing step. In this releasing step, the supply of air from the air supply port 43 is closed, and as shown in FIG. 3, the lower mold frame 36 provided around the lower mold 5 is lowered by the operation of reducing the piston 37a of the cylinder 37. It descends to the mold 5.

Next, when the cylinder 6 is driven, the rod-shaped valve member 52 is lowered, the injection hole 51 provided in the molding surface 5a of the lower die 5 is opened, and gas is injected from the injection hole 51.

At this time, the compact S is continuously driven by the vacuum blower, and the water suction port 4 provided on the molding surface 4a of the upper die 4 is moved.
0, it is adsorbed on the molding surface 4a of the upper die 4. Moreover, the upper mold frame 8 arranged on the outer periphery of the upper mold 4 is lowered to surround the molded body S from the periphery and to form the air supply port 4.
Since the supply of air from 3 is also cut off,
Thus, the suction force can be reliably attained without weakening the suction force to the molded body S through the air through the outside.

Then, the high-pressure compression means 2 is opened,
By raising the cylinder, the upper mold 4 becomes a compact S
Rises while adsorbing.

At the same time as the high-pressure compressing means 2 returns to the raised position, as shown in FIG. 4, the horizontal moving means 12 mounted on the upper die mounting plate 3 is driven to reduce the piston 12a, thereby reducing the upper die. The reference numeral 4 moves together with the upper die mounting plate 3 in the horizontal direction X to an alignment position with respect to the receiving table 11.

At this time, the compact S molded at a high density
Since it is transferred while being stably adsorbed on the molding surface 4a (the filter member 13) of the upper die 4, the shape does not collapse. Therefore, it is most suitable for forming a thin roof tile having a large area.

Then, the lifting / lowering means 39 is driven, and the pedestal 11 is raised to the desired height toward the molded body S. Then, the vacuum blower is reversed, and the suction of the compact S is stopped by ejecting air from the water suction port 40 (demolding step). When the cylinder 9 is driven and the piston 10 is contracted, the upper mold frame 8 rises with respect to the upper mold 4.
As a result, the molded body S is released (released) from the upper mold 4 without losing its shape, and is transferred onto the receiving table 11. The elevating means 39 is driven to lower the pedestal 11 and the compact S is moved to a required position such as a drying place. At an appropriate timing after the end of the mold release, the electromagnetic valve 46 is opened to prepare for the supply of air in the next press step.

When the piston 12a of the horizontal moving means 12 extends, the upper die 4 moves in the horizontal direction X again to a position where it is aligned with the lower die 5, and the cylinder 37 is driven to extend the piston 37a. As a result, the lower mold frame 36 rises with respect to the lower mold 5. Thus, one cycle of the molding cycle including high compression, water squeezing, mold release, demolding, adsorption transfer, and the like for the compact S is completed.

In the above embodiment, the air supply ports 43 are alternately arranged with the water suction ports 40. However, air may be supplied to the filter member 13 mounted on the molding surface 4a. The arrangement and number thereof are not limited, and may be one or more.

[0047]

[Modification] Hereinafter, a modification of the embodiment will be described with reference to the drawings. The same or equivalent parts and members as those of the embodiment are denoted by the same reference numerals, and the detailed description is omitted.

In FIGS. 10 and 11, reference numeral 1 denotes a molding apparatus according to this modification. This molding apparatus 1 is composed of an upper mold 4 and a lower mold 5 fitted up and down freely in an outer mold frame 36. The upper die 4 is provided with a plurality of vacuum suction ports (water extraction suction ports 40) on the lower surface (molding surface 4a) and communicates with water extraction passage holes (water extraction suction passages 41). The passage 41 includes the water collecting pipe 1
7 and the water collecting pipe 17 is connected to, for example,
It is connected to a vacuum source via a wind rotary centrifuge described in Japanese Patent No. 42013 or the like. Further, the water extraction suction passage 41 is a plurality of tube groups arranged in parallel, and the end thereof is stopped by a stopper plate 18 on the opposite side of the water collecting tube 17.

On the molding surface 4a, a filter member 13 in which a wire mesh formed of an iron plate for draining and a dewatering cloth or the like are combined is fixed by a holding plate 16 as a mounting stopper. Further, the water suction suction passage 41 is closed on the opposite side of the water collecting pipe 17 by the stopper plate 18, and in the vicinity thereof is connected to the air suction pipe (air supply passage 45) through the connection hole (air distribution passage 44). I have.

The air supply passage 45 is located in a plane above the water suction suction passage 41 of the upper mold 4.
The solenoid valve 46 is provided at one end thereof.
Is provided. The solenoid valve 46 supplies air to the air supply passage 45 or shuts off air in conjunction with the molding cycle. Details of the opening / closing control of the solenoid valve 46 are as follows.
For example, as shown in FIG.

The other end of the air supply passage 45 is closed by a stop plate 18, and a water supply pipe 19 is inserted through the stop plate 18 and concentrically on the axis in the air supply passage 45. The inside of the water supply pipe 19 communicates with the air supply passage 45 through a hole 19 a provided in the pipe wall, and the water in the water supply pipe 19 mixes the air in the air supply passage 45 with water by suction from the water collection pipe 17. The suction passage 41 is continuously washed while being joined with the squeezed water from the squeezed water suction port 40 and sucked.

In order to form the compact S from the molding apparatus 1 constructed as described above, as shown in FIG. Of the lower mold 36 and the molding surface 5a.
And into a cavity (molding space).

Next, in the pressing step, the lower mold 5 is
To the filter member 13 on the molding surface 4a.
The molding material S1 is brought into contact with the molding material S1 through the water suction port 40. The compression molding of the molding material S1 is performed while the water contained in the molding material S is quickly discharged from the water collecting pipe 17 through the water suction suction passage 41.

Further, at the same time as the compression molding, the washing water is supplied to the water supply pipe 1.
9 flows through the water supply suction passage 41 through the air supply passage 45 and the air distribution passage 44 to wash out the mud (such as cement mud) of the molding material mixed with the water squeeze, thereby avoiding the possibility of clogging.

Next, at the timing when the molded body S is molded (timing to release the compression), the electromagnetic valve 46 is closed, and the process proceeds to the mold release step. In this release step, the supply of air from the air supply passage 45 is closed, so that the suction force from the water suction inlet 40 does not decrease based on the supply of air from the air supply passage 45. Accordingly, the molded product is sucked by the suction force of the water squeezing suction port 40, and the mold can be released while securely holding the molded product.

On the other hand, if the compact is sucked while the electromagnetic valve 46 is open, and therefore, the air is supplied, as shown in FIG. 11, the suction from the side end 13a of the filter member 13 is prevented. Depending on the degree, the compact may fall.

Thereafter, the process proceeds to the transporting process and the demolding process. However, since the suction force from the water suction suction port 40 does not decrease due to the supply of air from the air supply passage 45, the water suction suction port is not used. Adsorb and transport the compact by suction force of 40,
Even when the mold is removed, the molded body can be transported and removed while securely holding it.

Other configurations, functions and effects are the same as those of the first embodiment.
Therefore, detailed description is omitted.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design may be changed without departing from the scope of the present invention. The present invention is also included in the present invention.

For example, the molding apparatus 1 of the above embodiment
In the above, the air was shut off using the electromagnetic valve 46,
Instead of the electromagnetic valve 46, a ball valve or the like capable of adjusting the amount of supplied air may be used. By adjusting and controlling the air supply amount, the molded body can be reliably sucked.

If a ball valve or other means for adjusting the amount of supplied air (air flow adjusting means capable of adjusting the amount of supplied air) is used at the time of molding, the amount of air sent from the air supply passage can be adjusted according to the type of molding material. It can be adjusted to the optimal air volume according to the change and the change of the molding condition. In addition, even when the molding material is constant, when the molding conditions are changed over time due to the familiarity between the molding surface (filter member) and the molding material, the supply amount of air (air volume) from the air volume adjusting means is adjusted. Thereby, molding conditions can always be kept optimal. In such a case, a shutoff device for shutting off and opening air, such as a solenoid valve, and a flow rate adjusting means, such as a ball valve, for adjusting the amount of air supplied, are arranged in series with each other. Open and close the valve, and in the long-term molding cycle,
Adjustment control may be performed on the amount of air supplied by the air volume adjusting means such as a ball valve.

In the above embodiment, the upper mold (or the lower mold) can move up and down with respect to the lower mold (or the upper mold), but both the upper mold and the lower mold can move up and down. A molding device may be used.

Although the upper mold frame 8 and the lower mold frame 36 which can be moved up and down have been used, these frames may not necessarily be able to be moved up and down if the releasability is solved by another configuration.
For example, the lower mold frame 36 may be divided in a plane direction to facilitate release. Further, the mold may be integrated with the upper mold or the lower mold.

[0064]

As described above, according to the present invention, the molding apparatus is provided with the air supply passage for securing the air flow for dewatering, and this air supply passage shuts off or regulates the air flow sent to the molding surface. Since it is possible, when the vacuum pressure required for suction after compression molding is reduced, the air supplied from the air supply passage can be cut off or adjusted, and the vacuum pressure required for suction can be maintained. This stabilizes the release or transfer of the compact after compression molding.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a molding apparatus according to an embodiment of the present invention, in a state where a molding material has been charged into a molding space opened between an upper mold and a lower mold.

FIG. 2 is a cross-sectional view showing a state in which a molding material is compressed and squeezed with a mold including a lower mold, an upper mold, and a mold frame.

FIG. 3 is a cross-sectional view showing a state where a molded body is adsorbed to a molding surface of an upper mold after molding.

FIG. 4 is a cross-sectional view showing a state in which the receiving base is raised to deliver a formed body.

FIG. 5 is a cross-sectional view showing a state where the molded body has been delivered to a receiving table.

FIG. 6 is a plan view showing a molding surface (lower surface) of the upper die according to the embodiment.

FIG. 7 is a cross-sectional view of the upper mold of FIG. 6 taken along line XX.

FIG. 8 is a partial perspective view illustrating a state in which a filter member is mounted on a molding surface (lower surface) 4a.

FIG. 9 is a diagram illustrating a molding cycle and an opening / closing flow of an electromagnetic valve.

FIG. 10 is a diagram illustrating a main part of a molding apparatus according to a modification.
FIG. 2 is a cross-sectional view of a main part taken along line YY of FIG.

11 is a cross-sectional view showing only the upper die of a cross section cut along the line ZZ in FIG. 10;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Forming apparatus 2 Elevating means 4 Upper mold 4a Molding surface 40 Water suction suction port 43 Air supply port 45 Air supply passage 5 Lower mold 5a Molding surface 51 Injection hole 12 Horizontal moving means 13 Filter member 14 Dewatering cloth 15 Wire mesh S Molded body S1 Molding material

Claims (4)

[Claims] 1. A molding material is poured into a cavity formed between molding surfaces arranged one above the other, and the molding material is compressed and contained in the molding material by clamping the upper and lower molds. A molding device for sucking water and dewatering, wherein the molding surface of the upper mold is subjected to water squeezing and deaeration of a cast molding material, and at the same time, releasing or transferring a molded body obtained after molding. In a molding apparatus having a water suction suction port which also serves to hold and hold the molded body by vacuum for the molding apparatus, the molding apparatus is capable of shutting off or adjusting the air volume for securing the air volume for the dehydration. A molding device comprising an air supply passage. 2. The molding apparatus according to claim 1, wherein the air supply passage includes an automatic valve that is opened and closed in accordance with a molding cycle. 3. The amount of air supplied from the air supply passage is controlled such that the degree of vacuum of the water suction port is adjusted to a desired degree of vacuum in conjunction with the degree of vacuum of the water suction port. The molding apparatus according to claim 1, wherein 4. The method according to claim 1, wherein the upper mold is provided so as to be able to move the molded body to a receiving table by adsorbing the molded body on a molding surface after compression molding of the molding material and thereby moving the molded body to a receiving table. The molding device according to any one of claims 1 to 3.