JPH07329032A - Apparatus for and method for molding of pressure molding product - Google Patents

Abstract

PURPOSE:To pressure mold a product which is high in tensile strength and compression strength and good in yield by a method wherein a structure is simplified to facilitate the manufacture, the whole mold is miniaturized, and a pressure molded product of a complicated shape can be finished in a beautiful surface at a low manufacturing cost. CONSTITUTION:A pressure molding product is pressure molded by discharging air by extracting air in a molding space part 17 in which a raw material G is charged through a hole part by a formation wherein a butting part 13 capable of coming in to a top force 1 or a bottom force 10, and the hole butt part 15 connected to a suction means 14 are formed to a form 12 provided transferrably around the top force or the bottom force.

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 a pressure molded product and a molding method therefor, for example, roof tiles, outer wall panels, inner wall panels, etc. used in building materials, and cement mortar molded products used in civil engineering materials. It is optimally used for pressure molding of ceramic products.

[0002]

2. Description of the Related Art Conventionally, a molding apparatus for a cement mortar molded product for pressure-molding cement mortar as a raw material is, for example, an upper and lower mold K including an upper mold a and a lower mold b as shown in FIG. On the other hand, for example, a large number of through holes d are provided on the molding surface c of the upper mold a, and the through holes d are connected to a vacuum pump P'as suction means provided outside the apparatus to form a mold around the upper mold a. There is an invention of a structure in which f is provided so as to be vertically movable. Then, water is squeezed at the time of pressure molding of the cement mortar raw material G by the upper mold a and the lower mold b through the through hole d communicating with the vacuum pump P ′, or the cement mortar molded product A ′ after pressure molding. While being surrounded by the mold frame f, it was adsorbed to the upper mold a and moved in a substantially horizontal direction for transportation.

FIG. 15 shows the molding surface a of the upper mold a.
By providing ridges g vertically and horizontally on ₁ and by arranging the mold f around the lower mold b in a vertically movable manner, the upper mold a
Pressing an outer wall panel as a building material in which a complicated pattern such as a tile pattern in which concave groove grooves h are vertically and horizontally arranged is formed on the surface of a cement mortar molded product A ″ which is molded by pressurizing with a lower mold b It is the one to be molded.

[0004]

By the way, in a molding apparatus for a cement mortar molded product having an upper mold and a lower mold, since water is squeezed at the time of pressure molding of a raw material, where is a drainage route of water to be sucked provided? Further, there is a problem of where to distribute the air contained in the raw material and its exhaust path, and further how to provide it.

In the cement mortar molded product having the above structure shown in FIG. 14, water is squeezed from the raw material G through the upper mold a during pressure molding by the upper mold a and the lower mold b. Request that there is a structural restriction that the molded product A'is adsorbed to the upper mold a and conveyed, and that the mold f must be provided around the upper mold a so as to be vertically movable. Since it is necessary to answer these questions and overcome these problems, the structure of the mold becomes complicated, the whole mold becomes large, and the number of parts increases and the mold can be easily manufactured. There was no such thing, and it required a high degree of specialized knowledge to make it, and the production cost was high.

As a cement mortar molded product having a complicated shape as shown in FIG. 15, for example, the molding surface a _{1 of the} upper mold a
By providing ridges g vertically and horizontally on the cement mortar molded product A ″ such as a tile pattern in which groove grooves h are arranged vertically and horizontally on the surface of the cement mortar molded product A ″ as a product.
It was not easy to mold a pressure-molded product such as. That is, when pressure molding is performed by the upper mold a and the lower mold b in the atmosphere, the air remains in the mold K in a partially compressed state, so that the cement mortar molded product A ″ has bubbles due to residual air. Therefore, it was not possible to press-mold into a predetermined shape, and the surface could not be formed into a clean finish, and the inside of the mold K was vacuumed by being surrounded by the upper mold a and the lower mold b and the mold f. It is considered that the cement mortar molded product A ″ as a raw material is put into a large number of through-holes d during pressurization by suction by the vacuum pump P ′ once the pressurizing process is started. Since it invades, molding was difficult. Although not shown in the drawing, if the lower die b is provided with a through hole d for suction and pressure molding with the upper die a is performed in a vacuum state, the lower die b
Since the raw material G is placed on the upper part and the pressing force of the upper mold a and the lower mold b acts, the clogging of the raw material G into the through hole d becomes serious, and the vacuum suction by the vacuum pump P ′ becomes difficult. Become. As shown in FIG. 15, a cement mortar molded product A ″ is vacuumed by pressurizing the upper mold a and the lower mold b using a molding device having a structure in which a large number of through holes d are provided on the lower surface of the upper mold a. In order to form a groove groove h on the surface of the pressure-molded product A ″ by providing a protrusion g that intersects vertically and horizontally on the molding surface a ₁ of the lower surface of the upper mold a when pressure-molding under the state. When the raw material G is put on the upper surface of the lower mold b, the raw material G is compressed and compressed by the upper mold a and the lower mold b while the air is already trapped in the lower surface of the raw material G. Therefore, when the groove groove h is formed deeply from the surface, a large number of air bubbles are exposed on the surface of the pressure-molded product A ″ due to the trapped air.
The pressure-molded product A ″ cannot be molded into a predetermined shape due to chipping or the like, and it is difficult to mold it with a clean surface, and the tensile strength and compression strength are low, and the structure is fragile. , The product yield was not good.

Therefore, according to the present invention, the raw material is placed in the lower mold by feeding the raw material into a molding space surrounded by an upper die and a lower die and a mold provided around the upper die or the lower die. By closing the molding space by moving the mold, a hole for vacuum suction provided in the mold is opened in the molding space at the same time, and the internal air is sucked by the suction means and exhausted to cause the inside of the molding space. To vacuum. When the upper mold and the lower mold are pressure-molded, the holes are closed by the upper mold or the lower mold to prevent the raw material from entering the holes and press the upper mold and the lower mold to form a pressure-molded product. It is characterized by being molded.

According to the present invention, the structure is simplified, the number of parts is small, the manufacturing is easy, the entire mold is downsized, the manufacturing cost is low, and the pressure-molded product has a complicated shape such as a tile pattern. It is an object of the present invention to provide a pressure-molded article and a molding method which are optimal for pressure-molding a product having a clean surface, high tensile strength, high compression strength and the like, and good yield.

[0009]

In order to solve the above-mentioned problems, the present invention moves to an outer die of an upper die or a lower die, one of which is movably provided so as to face the other and an outer periphery of the upper die or the lower die. In a molding apparatus for a pressure-molded product, in which a raw material is put into a molding space portion surrounded by a mold frame that can be provided, and pressure molding is performed, the mold frame is provided so as to be able to collide with the upper mold or the lower mold. An abutting part to be formed, a hole part for connecting the forming space part and the suction means are provided, and the abutting part abuts against the upper mold or the lower mold to seal the inside of the forming space part. The air was sucked in, and after exhausting, the raw material was pressure-molded by the upper mold and the lower mold.

Further, the present invention comprises a step of introducing a raw material into a molding space portion surrounded by an upper mold and a lower mold and a mold movably provided on the outer periphery of the upper mold or the lower mold, and the mold. By moving and abutting the abutting portion provided on the mold to one of the upper mold and the lower mold, the molding space is sealed, and the air in the molding space is provided on the mold. A step of removing air by sucking through the hole and exhausting;
Next, it is said that the method includes a step of press-molding the raw material by pressurizing the upper mold and the lower mold by moving either the upper mold or the lower mold in a direction opposed to the other subsequently to the evacuation. Adopted means.

Further, a step of charging a raw material into a molding space surrounded by an upper mold and a lower mold and a mold movably provided around the upper mold or the lower mold; and moving the mold. The abutment portion provided on the mold frame is abutted against one of the upper die and the lower die to seal the molding space portion, and the air in the molding space portion is passed through the hole provided in the die frame. A step of removing air by sucking and exhausting, and then, during exhaustion, by moving either the upper mold or the lower mold in a direction facing the other, the upper mold and the lower mold are separated. The step of press-molding the raw material by pressurization, and the press-molded product after the press-molding is ejected from at least the vent hole of the gas injection means provided on the upper surface of the lower mold to release the release-molded product. The method including the step of releasing the mold is adopted.

[0012]

The raw material is put into the molding space surrounded by the upper mold and the lower mold and the movable frame provided in the upper mold or the lower mold. Then, the mold frame is moved with respect to the upper mold or the lower mold, and the abutting portion thereof is abutted against the upper mold or the lower mold to seal the inside of the molding space portion. Then, after the air in the molding space is sucked and exhausted by the suction means from the hole provided in the mold, one of the upper mold and the lower mold is moved in the direction opposite to the other and introduced into the molding space. The raw material is pressed by the upper mold and the lower mold to be molded. After that, after moving the mold that had been abutting against the upper mold or the lower mold to the old position, the pressure-molded product is conveyed to a desired place while being adsorbed by the upper mold, and the mold is released. Mold a pressure molded product.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes an upper mold, and this upper mold 1 is attached to the lower surface of an upper mold mounting plate 1A provided at the lower end of a piston I which can be raised and lowered in a high pressure press cylinder C as shown in FIG. It becomes possible to move in opposition to the lower mold 10 described later. .

Reference numeral 2 denotes a ridge portion which is provided on the lower surface of the upper die 1 so as to cross the molding surface 1a in the vertical and horizontal directions. The ridge portion 2 is a tile which is vertically and horizontally arranged on the surface of a pressure-formed product A described later. It is formed by pressing the groove groove 3 corresponding to the joint recess of the pattern. Although the molding surface 1a is formed as a recess in the drawing, the entire surface may be formed flat, although not shown in the drawing. Moreover, when the groove 3 is not formed on the surface of the press-formed product A, the molding surface 1a may be formed flat without forming the protrusion 2.

Reference numeral 4 denotes gas injection means provided in the upper mold 1 in a desired number, four in the figure, and the gas injection means 4 is provided with the ridge portion 2 provided so as to intersect vertically and horizontally.
When releasing the pressure-molded product A from the crossing point, it is possible to close the vent hole 5 provided so as to eject the release gas to the pressure-molded product A to perform the mold release. A piston body provided with a small-diameter piston portion 7A that moves up and down so as to open and close a communication hole 6 provided in the upper die 1 substantially orthogonal to the above, and a large-diameter piston portion 7B formed coaxially with the small-diameter piston portion 7A. 8
And a cylinder 9 for accommodating the piston body 8 so as to be able to move up and down. As the release gas ejected from the vent holes 5, for example, compressed air is used. Further, as described above, the mold release gas is ejected from the vent hole 5 to release the pressure-molded product A from the mold, and the abutment portion 13 of the mold 12 collides with the upper mold 1. It is also conceivable that after the molding space 17 is sealed, the air in the molding space 17 is sucked by a suction means (not shown) in cooperation with the suction means 14 described later to suck and exhaust the air as needed.

Reference numeral 10 denotes a lower die in which the upper die 1 is provided so as to be opposed to each other and is movable. The lower die 10 is fixed on, for example, a leg 11 and has a plane size smaller than that of the upper die 1. It is formed.

Reference numeral 12 denotes a mold which is movably provided around the lower mold 10. The mold 12 is formed in the shape of a flat frame as a whole, and the upper mold 1 is abutted against the inner portion of the upper surface thereof. A possible abutting portion 13 is provided, and a laterally long hole portion 15 which can connect the molding space portion 17 and the suction means 14 described later is provided at a substantially intermediate portion in the vertical direction.

Numeral 15a is an opening provided vertically at the inner end of the hole 15 along the moving direction of the upper mold 1. The opening 15a is formed by the mold 12 as shown in FIG. By facing the inside of the molding space 17 at the start of abutting against the upper mold 10, the molding space 17 and the suction means 14 can be communicated with each other through the hole 15, and the internal air in the molding space 17 can be discharged. While exhausting by suction by the suction means 14, as shown in FIG. 5, when the raw material G is pressure-molded, it can be closed by the side surface of the lower mold 10 to prevent the raw material G from flowing out of the molding space 17. The suction of air from the molding space 17 and the discharge of air are stopped.

Reference numeral 16 denotes a filter component provided as needed near the connection point of the opening 15a to the hole 15. As the filter component 16, for example, a filter polymer and a wire mesh are used. It

As the suction means 14, for example, a vacuum pump P is used.

Reference numeral 17 denotes the upper mold 1 and the lower mold 10,
A molding space portion surrounded by a mold frame 12 movably provided in the vertical direction around the upper mold 1 or the lower mold 10,
The raw material G is put into the molding space 17. As the raw material G, cement mortar, cement mortar containing various fibers such as inorganic or organic or metal, gypsum, viscous plastic material such as plastic, ceramic, or pre-molded by extrusion molding or the like before solidification Cement,
Examples include plaster and plastic.

Reference numeral 18 denotes a driving means for moving the mold 12 up and down. The driving means 18 has a piston 19 provided with the mold 12 at its upper end, and a cylinder 20 in which the piston 19 is vertically movable. Formed from. The pressure source for moving up and down the piston 19 may be either hydraulic pressure or pneumatic pressure.

Numerals 21 and 22 denote packings mounted on the upper surface and the inner side of the mold 12, and the abutting portion 13 of the mold 12.
When abutting against the upper mold 1, the upper mold 1, the lower mold 10 and the mold 1
This is for making the molding space 17 surrounded by 2 and 2 airtight.

An embodiment of the present invention has the above-mentioned structure,
The case of molding the pressure-molded article A will be described below in the order of steps along with the operation. First, as the first step, the upper mold 1 and the lower mold 10
Then, the raw material G is charged into the molding space 17 surrounded by the mold 12 provided around the lower mold 10 so as to be movable in the vertical direction (see FIG. 1). At this time, as the raw material G to be charged, cement mortar, cement mortar containing various fibers such as inorganic or organic, or metal, gypsum, viscous plastic material such as plastic, ceramic, or extruded material is used. Pre-molded pre-solidification cement, gypsum,
Examples include plastics.

Next, hydraulic or pneumatic pressure is applied to the inside of the cylinder 20 of the driving means 18 from the inlet side port to move the piston 19 upward so that the mold 12 provided around the lower mold 10 so as to be movable in the vertical direction is moved upward. Inside the molding space 17 surrounded by the upper mold 1, the lower mold 10 and the mold 12 by abutting the abutting portion 13 provided on the inner surface of the upper surface of the mold 12 against the lower surface of the upper mold 1. For airtightness (see Fig. 3). Then, when the suction means 14 such as the vacuum pump P is driven, a molding space portion surrounded by the upper die 1 and the lower die 10 and the mold 12 in which the abutting portion 13 abuts the lower surface of the upper die 1. Since the internal air inside 17 is sucked by the suction means 14 through the hole 15 provided at the inner end with the opening 15a located above the lower mold 10 so as to be exposed inside the molding space 17,
The inside of the molding space 17 is evacuated. The air contained in the raw material G is also sucked through the hole 15 and exhausted to the outside. Further, the suction means 14 sucks the internal air in the molding space 17 and exhausts the air in order to drive the piston body 8 by cooperating with it to apply hydraulic pressure or pneumatic pressure to the cylinder 9. Thus, if the small-diameter piston portion 7A is pulled up from the ventilation hole 5 to the communication hole 6 and the internal air in the molding space portion 17 is sucked and exhausted by the suction means (not shown), the exhaust operation can be performed efficiently. At this time, since the packing 21 is mounted on the upper surface of the mold 12 to be in close contact with the upper mold 1, and the packing 22 mounted below the inner side of the mold 12 is in contact with the outer periphery of the lower mold 10, the molding space 17
The inside is highly airtight.

After that, the hydraulic pressure is press-fitted into the high pressure cylinder C shown in FIG. 2, and the upper die 1 having the abutting portion 13 of the form 12 abutting against the lower surface thereof descends with respect to the lower die 10. As a result, the mold frame 12 is slightly pushed down against the pushing force of the cylinder 20 of the driving means 18, so that the vertical opening 15a of the hole 15 exposed in the molding space 17 becomes smaller. Is closed by the side surface (see FIG. 4). As a result, the raw material G is prevented from flowing out of the molding space 17 due to the pressurization, and the mold 12 is prevented from entering the hole 15 by the suction of the suction means 14.

Further, since the cylinder C for high pressure continues to be driven and the piston I slightly expands, the upper mold 1 is slightly lowered from the position shown in FIG. 4, so that it is put into the molding space 17. The raw material G is pressure-molded by the upper mold 1 and the lower mold 10 (see FIG. 5). At this time, the upper mold 1 and the lower mold 10
In order to prevent the applied pressure between the mold 12 and the mold 12 from acting as a lateral pressure, the abutting surface of the mold 12 should be located at a height that substantially matches the upper surface of the lower mold 10. This eliminates the need to manufacture the die itself with extremely high rigidity. Since the molding surface 1a on the lower surface of the upper mold 1 is formed with the ridges 2 which cross vertically and horizontally, the raw material G is
By the pressing of the lower mold 10 and the lower mold 10, the groove 3 corresponding to the joint recess is vertically and horizontally formed on the surface of the pressure-formed product A, and a complicated pattern such as a tile pattern is formed. At this time, the air inside the molding space 17 is completely sucked by the suction means 14 to be in a vacuum state, and the air contained in the press-molded product A is sufficiently sucked by the suction means 14 to be removed. Since the upper mold 1 and the lower mold 10 are pressed, the concave groove 3
Even when the pressure is deep, the presence of residual air does not generate air bubbles and the surface is not roughened, so that the pressure-formed product A having a predetermined shape can be pressure-molded with no cracks on a clean finished surface and the pressure-formed product A is Molded with high tensile strength and compressive strength.

Thereafter, when hydraulic pressure or pneumatic pressure is released from the outlet side port of the cylinder 20 of the driving means 18 and the piston 19 contracts with respect to the cylinder 20, the mold 12 that has been raised falls to the lower mold 10. . Then, when the piston I in the cylinder C is driven and contracts, the upper mold 1
Rises while the pressure-molded product A is adsorbed on the molding surface 1a (see FIG. 6). At this time, the pressure-molded product A is adsorbed to the molding surface 1a of the upper mold 1 because of the adhesive force when the pressure-molded product A is pressure-molded by the upper mold 1 and the lower mold 10, and the suction force. This is because the vacuum suction force of the means 14 acts on the rear surface side of the pressure-molded product A on the molding surface 1a of the upper mold 1 having the recessed shape. Then, when the horizontal moving piston I'of FIG.
The upper mold 1 moves horizontally to the cradle W as indicated by the arrow A while the pressure-molded product A is adsorbed on the molding surface 1a.

When the pressure-molded product A is moved to the cradle W and conveyed, the desired number, four in the figure, of the gas injection means 4, the piston bodies 8 of the gas injection means 4, are raised. The vent hole 5 provided on the molding surface 1a of the upper mold 1 has a small diameter piston portion 7A.
The mold release gas is ejected from the ventilation hole 5 through the communication hole 6 because the release gas is released. Therefore, the pressure-molded product A adsorbed on the molding surface 1a of the upper mold 1 is released from the upper mold 1 under the pressure of the mold release gas and is quickly placed on the pedestal W. At this time, since the release gas is ejected from the ventilation hole 5 of the gas injecting means 4, the pressure-molded product A is easily released from the mold,
Easily released from the product with a clean surface without chipping. Further, as the piston I ″ extends, the cradle W is located at the raised position to facilitate the delivery of the pressure-molded product A, as shown in FIG.
Is pressure molded.

The thickness t of the pressure-molded product A molded through the above operation is such that the depth of the recessed shape such as the molding surface 1a of the upper mold 1 is deepened, and the mold 12 is driven with respect to the upper mold 1. Means 1
It is also possible to adjust the thickness by adjusting the vertical movement stroke of 8 and the degree of opening from the abutting portion 13 of the opening 15a provided on the inner end surface of the hole 15 provided in the mold 12.

What is shown in FIGS. 8 to 13 is the second embodiment of the present invention.
This embodiment is different from the above-described embodiment in that not only the upper mold 1 but also the lower mold 10 are provided with a desired number of gas injection means 4 ′ substantially opposite to the gas injection means 4. Has been adopted. Gas injection means 4'used in this embodiment
Is similar to the gas injection means 4 of the first embodiment described above.
A small-diameter piston portion 7'A that can be closed with a vent hole 5'provided on the upper surface of the lower mold 10 and that can vertically move a communication hole 6'provided in the lower mold 10 so as to close the vent hole 5 '.
And a piston body 8'consisting of a large-diameter piston portion 7'B formed coaxially with the small-diameter piston portion 7'A, and a cylinder 9'for accommodating the piston body 8 'so that it can be moved up and down. .

Then, the upper mold 1, the lower mold 10, and the mold 12
The internal air existing in the molding space 17 is sucked by the suction means 14 from the raw material G introduced into the molding space 17 formed by (1) and (2) by the same operation as in the above embodiment (see FIG. 9). Then, as shown in FIG. 11, after the upper mold 1 and the lower mold 10 are moved to the upper mold 1 around the lower mold 10 and the abutting portion 13 is abutted and pressed, As shown in the drawing, when the upper mold 1 is lifted and the press-molded product A is released from the lower mold 10, the piston body 8'of the gas injection means 4'is driven to open the small-diameter piston portion 7'A to the vent hole 5. It is designed to be easily and surely released from the lower mold 10 and adsorbed to the upper mold 1 to be conveyed without being chipped or deformed and ejected from the ′ ′. This is similar to the above embodiment.

In each of the above-described embodiments, the mold 12 having the abutting portion 13 that can abut against the lower surface of the upper mold 1 is moved up and down around the lower mold 10 that allows the upper mold 1 to move oppositely. By providing as much as possible, the molding space 17 surrounded by the upper mold 1, the lower mold 10, and the mold 12 is formed, but the present invention is not limited to this, and the lower mold is provided around the upper mold 1. By providing a mold frame having an abutting part capable of abutting on the upper surface of 10 so as to be movable in the downward direction, the raw material is formed in the molding space 17 formed by the upper mold 1, the lower mold 10 and the mold. It is also possible to mold the pressure-molded product A by introducing G, sucking the internal air, exhausting the air, and then pressure-molding. At this time, the upper mold 1
In order to easily release the pressure-molded product A from the lower mold 10 or to release the pressure-molded product A from the upper mold 1 onto the pedestal W after pressure-molding the lower mold 10 and the lower mold 10, By moving the mold 12 upward with respect to the upper mold 1, or by injecting a mold release gas from the periphery of the mold 12 to the upper surface or the lower surface of the pressure molded product A, the pressure molded product A It may be considered that the mold is easily released from the lower mold 10 or the upper mold 1. Further, the mold 12 provided around the lower mold 10 or the mold 12 provided around the upper mold 1.
In the above description, the one integrally molded into a frame shape was used, but the mold 12 may be divided into a plurality of pieces.

In each of the above-described embodiments, the case where the suction means 14 sucks the internal air in the molding space 17 and exhausts the air through the hole 15 provided in the mold 12 has been described. If necessary, suction,
Water may be squeezed from the raw material G together with the exhaust.

In each of the above-mentioned embodiments, the lower mold 10 is provided with the ridges 2 in the vertical and horizontal directions, and the surface of the lower mold 10 is made flat so that only the surface of the pressure-molded product A has vertical and horizontal joints. The tile pattern or the like is formed by forming the concave groove 3 corresponding to the portion, but the upper surface of the lower mold 10 is also provided with the protruding portions 2 in the vertical and horizontal directions so that the lower surface of the pressure molded product A is also concave. It is also possible to form a groove or the like.

[0036]

As described above, according to the present invention, the structure of the mold is simplified, the number of parts is small, the manufacturing is easy, the size of the entire mold is small, the manufacturing cost is low, and the molding space of the mold is small. Since the air inside the unit can be completely sucked and removed by the suction means, pressure-molded products with complicated shapes such as tile patterns can be added to products with good yield and high tensile strength and compressive strength with a clean surface. Can be pressure molded.

[Brief description of drawings]

FIG. 1 is a first embodiment of the present invention and is a cross-sectional view showing a state in which a raw material is supplied into a molding space.

FIG. 2 is a sectional view showing an overall structure of the same.

FIG. 3 is a cross-sectional view showing a state in which the air in the molding space is also sucked and exhausted by a suction unit.

FIG. 4 is a sectional view showing a state immediately before pressure molding.

FIG. 5 is a sectional view showing a pressure-molded state in the same manner.

FIG. 6 is a cross-sectional view of a state in which the pressure-molded product is likewise adsorbed on the upper mold and released from the lower mold.

FIG. 7 is a cross-sectional view showing a state in which the pressure-molded product is adsorbed to the upper mold and conveyed to a predetermined position, then released from the upper mold and placed on the pedestal.

FIG. 8 is a second embodiment of the present invention and is a cross-sectional view showing a state in which a raw material is supplied into the molding space.

FIG. 9 is a cross-sectional view showing a state in which air in the molding space is similarly sucked and exhausted by a suction unit.

FIG. 10 is a sectional view showing a state immediately before pressure molding.

FIG. 11 is a cross-sectional view showing a state of pressure molding in the same manner.

FIG. 12 is a cross-sectional view showing a state in which the pressure-molded product is likewise adsorbed to the upper mold and released from the lower mold.

FIG. 13 is a cross-sectional view showing a state in which the pressure-molded product is similarly adsorbed by the upper mold, transported to a predetermined position, and then placed on the pedestal.

FIG. 14 is a cross-sectional view showing a conventional cement mortar forming apparatus of this type.

FIG. 15 is an explanatory cross-sectional view showing an example of the related art in the case of molding a cement mortar molded product having a complicated shape such as having uneven portions on the surface.

[Explanation of symbols]

 1 Upper mold 2 Protruded ridge portion 3 Recessed groove groove 4 Gas injection means 5 Vent hole 6 Communication hole 7A Small diameter piston portion 7B Large diameter piston portion 9 Cylinder 10 Lower die 12 Form frame 13 Abutting portion 14 Suction means 15 Hole portion 15a Opening Part 17 Molding space Part A Pressure molded product G Raw material

Claims (12)

[Claims] 1. A raw material in a molding space surrounded by an upper die and a lower die, one of which is movably provided opposite to the other, and a die frame movably provided around the upper die or the lower die. In a molding device for a pressure-molded product that is charged with
The mold frame is provided with an abutting portion capable of abutting against the upper die or the lower die, and a hole portion capable of connecting the molding space portion and the suction means, and the abutting portion is the upper portion. A molding apparatus for a pressure-molded product, which is sealed by abutting against a mold or the lower mold, sucks air in the molding space, and pressurizes the raw material by the upper mold and the lower mold after exhausting. . 2. The hole is formed in the mold frame in a laterally elongated manner, and the hole is formed on a sliding surface of the hole with respect to the upper mold or the lower mold, in a moving direction of the upper mold or the lower mold. Along the way, the molding space and the suction means can be communicated with each other through the hole as desired in the molding space at the time when the mold starts to collide with the upper mold or the lower mold. The apparatus for molding a pressure-molded product according to claim 1, wherein a vertical opening that can be closed by a side surface of the lower mold or the upper mold at the time of pressure molding is provided. 3. A ridge portion for forming a groove groove on the surface of the pressure-molded product is provided on at least one surface of the lower surface of the upper mold or the upper surface of the lower mold in a crosswise manner. The apparatus for molding a pressure-formed product according to claim 1. 4. The pressure molding according to claim 1, wherein the mold frame is provided so as to be movable in the vertical direction around the lower mold that can collide with the upper mold. Equipment for molding products. 5. The pressure molding according to claim 1, wherein the mold frame is provided around the upper mold capable of colliding with the lower mold so as to be vertically movable. Equipment for molding products. 6. The apparatus for molding a pressure-formed product according to claim 1, wherein a desired number of gas injection means capable of ejecting a release gas are provided on at least the lower surface of the upper mold. 7. The pressure-formed product according to claim 1, wherein a desired number of gas injection means capable of ejecting a mold release gas are provided on the lower surface of the upper mold and the upper surface of the lower mold. Molding equipment. 8. The gas injecting means is provided at a crossing point of a ridge portion provided so as to cross in a vertical and horizontal direction on at least one surface of a lower surface of the upper mold or an upper surface of the lower mold. A molding apparatus for a pressure-molded product according to claim 6 or 7. 9. The gas injecting means can close a vent hole provided in a lower surface of the upper mold or an upper surface of the lower mold, and can open and close a communication hole provided substantially orthogonal to the vent hole. A piston body having a small-diameter piston portion that moves up and down, a large-diameter piston portion that is formed coaxially with the small-diameter piston portion, and a cylinder that accommodates the piston body so that the piston body can move up and down. The molding apparatus for a pressure-molded product according to claim 6, claim 7, or claim 8. 10. The method according to claim 6, wherein the gas injection means is provided so as to substantially coincide with a molding portion of a joint concave portion formed on the surface of the pressure-molded product. Or a molding apparatus for a pressure-molded article according to claim 9. 11. A step of charging a raw material into a molding space portion surrounded by an upper mold and a lower mold, and a mold movably provided around the upper mold or the lower mold, and the mold being a lower mold. Alternatively, by moving the abutting portion provided on the mold by abutting against one of the upper die and the lower die, the molding space is sealed and the air in the molding space is removed. A step of removing air by sucking through a hole provided in the mold and exhausting it, and then by moving either the upper mold or the lower mold in a direction opposite to the other when exhausting A method of molding a pressure-molded product, comprising the step of pressure-molding a raw material by pressing the upper mold and the lower mold. 12. A step of introducing a raw material into a molding space portion surrounded by an upper mold and a lower mold and a mold movably provided around the upper mold or the lower mold, and the lower mold or the upper mold. The mold space is moved relative to the mold and the abutment portion provided on the mold is abutted against one of the upper die and the lower die to seal the molding space portion, and then the molding space portion is closed. A step of evacuating air by sucking air through a hole provided in the mold and exhausting it, and then, when exhausting, either the upper mold or the lower mold moves in a direction facing the other By this, the step of press-molding the raw material by pressurizing the upper mold and the lower mold, and separating the pressure-molded product after pressure molding from the vent hole of the gas injection means provided at least on the upper surface of the lower mold. It is characterized by including a step of ejecting a mold gas to release the pressure-molded product from the mold. Molding method for pressure molded products.