JPH1034580A - Transfer feeder and demolding device for hydraulic inorganic molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a demolding device for a hydraulic inorganic molding without apprehension dropping down a molding from a sucker board during demolding even when partial improper suction is generated at suction time of the molding to the sucker board. SOLUTION: In a demolding device for a hydraulic inorganic molding used in the case of suction-demolding the press-molded hydraulic inorganic molding from a press mold by a sucker board, in a sucker surface 11 provided in a lower surface of the sucker board 1, a plurality of suction holes 12 are provided, in each suction hole 12, a suction valve 2 is provided, it is constituted by protrusively providing a valve lever 22 having an external diameter smaller than an internal diameter of the suction hole 12 under a closing plate 21, the valve lever 22 is inserted in each suction hole 12, the closing plate 21 is brought into close contact with a reverse surface of the sucker surface 11, the suction hole 12 is closed, and, when a lower end of the valve lever 22 is protruded downward from the sucker surface 11, the suction hole 12 is closed by the suction valve 2, and, when its closing plate 21 is floated from a reverse surface of the sucker surface 11, the suction hole 12 is opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transferring a hydraulic inorganic molded article which is used when an extruded hydraulic inorganic molded article cut to a substantially fixed size is transferred to a press die by a suction cup. The present invention relates to a demolding apparatus for a hydraulic inorganic molded article used when a press-formed hydraulic inorganic molded article is adsorbed and released from a press die by a suction cup.

[0002]

2. Description of the Related Art Conventionally, molded articles obtained by press-molding and hardening a composition comprising a hydraulic inorganic substance such as cement or gypsum and water have been used for various structures, structural materials and the like.
For example, as described in JP-A-5-329823 and the like, it is known that an extruded hydraulic inorganic molded article cut to an appropriate length is transferred to a press mold and press-molded. ing.

Also, as described in, for example, Japanese Patent Application Laid-Open No. 1-215506, a hydraulic inorganic molding used when a press-formed hydraulic inorganic molding is adsorbed and demolded from a press die by a suction cup. BACKGROUND OF THE INVENTION Body removal devices are known.

[0004]

However, in the case where the former extruded hydraulic inorganic molded article, which has been appropriately cut into lengths, is transferred to a press die by a suction cup, the hydraulic inorganic molded article is defined. It is difficult to cut to a scale, and it is inevitable that a hydraulic inorganic molded article will have a length. If a relatively short hydraulic inorganic molded article is transferred to a press die by a suction cup, the molding is performed. The adhesion between the body and the suction cup is partially insufficient, and a large amount of air enters into the suction cup from that part.As a result, the adhesion between the molded article and the suction cup is completely broken, and the molded article is dropped from the suction cup during transfer. There was a fear that it would.

[0005] In the latter device for removing a hydraulic inorganic molded article, when the adhesion between the molded article and the suction cup is insufficient even in a part, a large amount of air enters into the suction cup from that part. In this case, the adhesion between the molded body and the suction cup may be completely broken, and the molded article may fall from the suction cup during demolding.

SUMMARY OF THE INVENTION The present invention relates to the above-mentioned problems in the case where a conventional extruded hydraulic inorganic molded article, which has been appropriately cut into lengths, is transferred to a press die by a suction cup. In the body demolding device, the purpose was to pay attention to the above-mentioned problems, and the purpose is to cut a conventional extruded hydraulic inorganic molded body into appropriate lengths To solve the problem of transferring the hydraulic inorganic molded product to the press mold by the suction cup, or the problem of the demolding device of the hydraulic inorganic molded product. A transfer device for hydraulic inorganic molded bodies that does not cause the body to fall,
Another object is to provide a demolding device.

[0007]

Means for Solving the Problems To solve the above-mentioned problems, a transfer device for a hydraulic inorganic molded article according to claim 1 comprises:
A hydraulic inorganic molded body transfer device used when transferring an extruded hydraulic inorganic molded body cut to an appropriate length to a press die by a suction cup, and an adsorption device provided on a lower surface of the suction cup. A plurality of suction holes are provided on the surface, each suction hole is provided with a suction valve, and the suction valve is formed by projecting a valve rod having an outer diameter smaller than the inner diameter of the suction hole below the closing plate. When the valve rod is inserted through each suction hole, the closing plate is closely contacted with the back surface of the suction surface to close the suction hole, and when the lower end of the valve rod projects below the suction surface, the suction valve is used. Is closed, and the suction hole is opened when the closing plate of the suction valve rises from the back surface of the suction surface.

According to a second aspect of the present invention, there is provided a demolding apparatus for a hydraulic inorganic molded article, which is used when a press-formed hydraulic inorganic molded article is desorbed from a press die by a suction cup. A body removal device, wherein a plurality of suction holes are provided on a suction surface provided on a lower surface of a suction cup, each suction hole is provided with a suction valve, and the suction valve is provided with a suction hole below a closing plate. A valve rod having an outer diameter smaller than the inner diameter is protrudingly provided, the valve rod is inserted through each suction hole, a closing plate is closely attached to the back surface of the suction surface to close the suction hole, and the lower end of the valve rod. When is protruded below the suction surface, the suction hole is closed by the suction valve, and the suction hole is opened when the closing plate of the suction valve rises from the back surface of the suction surface. Things.

In the present invention, as the suction valve, a valve rod having an outer diameter smaller than the inner diameter of the suction hole protrudes below the closing plate, and the valve rod is inserted through each suction hole. When the closing plate is in close contact with the back surface of the suction surface to close the suction hole and the lower end of the valve rod projects below the suction surface, the suction valve closes the suction hole and the closing plate of the suction valve is closed. The shape and material are not particularly limited, as long as the suction holes are opened when floating from the back surface of the suction surface.

When the closing plate of the suction valve is in close contact with the back surface of the suction surface to close the suction hole and the lower end of the valve rod projects below the suction surface, the protrusion length is 1 mm from the suction surface of the suction cup. If the protrusion length is too small, even if the molded body contacts the suction surface of the suction cup, the closing plate does not float from the back surface of the suction surface and remains in close contact, and the suction force is reduced. The compact does not work and it is difficult for the compact to be adsorbed. Conversely, if the protruding length is excessively large, if the compact is inadequately adhered to the suction cup, the blocking plate of the suction valve closes the suction hole. As a result, the vacuum state in the suction cup is broken and the molded body cannot be adsorbed, and the molded body may be dropped.

The gap between the valve rod of the suction valve and the suction hole is
It is preferably about 0.5 mm to 10 mm, preferably about 2 mm to 5 mm, and if the gap is too small,
Dust and the like may cause clogging of the suction hole. Conversely, if the gap is too large, the molded article may be sucked into the suction hole and cause poor appearance such as dents.

It is preferable that the suction holes provided on the suction surface of the suction cup are provided at substantially equal intervals so that the molded body can be uniformly suctioned to the suction surface. In such a case, a suction hole may not be provided on the suction surface corresponding to the location.

Further, as a material of the hydraulic inorganic molded article,
A filler, a fiber reinforcing material, a molding aid, and the like may be appropriately added in addition to a hydraulic inorganic material such as cement and gypsum and water.

According to the first aspect of the present invention, a plurality of suction holes are provided on a suction surface provided on a lower surface of the suction cup, and a suction valve is provided for each suction hole. The suction valve is configured by protruding a valve rod having an outer diameter smaller than the inner diameter of the suction hole below the closing plate, the valve rod is inserted through each suction hole, and the closing plate is provided on the back surface of the suction surface. When the suction hole is closed and the suction hole is closed and the lower end of the valve rod projects below the suction surface, the suction hole is closed by the suction valve, and when the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is closed. The suction valve is dropped when a part of the molded body separates from the suction surface due to partial suction failure during suction of the molded body to the suction cup, so that the suction plate falls and the closing plate is closed. Closed to the back side to close the suction hole, so the vacuum in the suction cup will not be broken. And therefore, there is no fear that by dropping the molded body from the suction cup during demolding.

When the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened.
When the compact comes into close contact with the suction surface of the suction cup, the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened, and the compact is sucked to the suction surface.

According to a second aspect of the present invention, in the apparatus for removing a hydraulic inorganic molded article, a plurality of suction holes are provided in a suction surface provided on a lower surface of the suction cup, and a suction valve is provided in each suction hole. The suction valve is configured by protruding a valve rod having an outer diameter smaller than the inner diameter of the suction hole below the closing plate, the valve rod is inserted through each suction hole, and the closing plate is provided on the back surface of the suction surface. When the suction hole is closed and the suction hole is closed and the lower end of the valve rod projects below the suction surface, the suction hole is closed by the suction valve. If a part of the molded body separates from the suction surface due to poor suction, the suction valve will fall and the closing plate will be in close contact with the back surface of the suction surface and close the suction hole, so that the vacuum in the suction cup will be broken. Therefore, there is no danger of the molded article dropping from the suction cup during demolding.

When the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened.
When the compact comes into close contact with the suction surface of the suction cup, the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened, and the compact is sucked to the suction surface.

[0018]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an example of a transfer device for a hydraulic inorganic molded article of the present invention, and FIG. 2 is a perspective view of the back surface of the transfer apparatus for a hydraulic inorganic molded article of the present invention shown in FIG. .

1 and 2, reference numeral 1 denotes a stainless steel suction cup of the hydraulic inorganic molded article transfer device of the present invention, 11 denotes a suction surface provided on the lower surface of the suction cup 1, and 12, 12,. Suction holes provided at substantially equal intervals on the entire surface, 13 is a cavity provided inside the suction cup 1, and the cavity 13 is connected to a vacuum pump (not shown) by a suction pipe 14, and the cavity 13 is depressurized. Is held.

Reference numeral 2 denotes a brass suction valve provided in each of the suction holes 12, 12,..., As shown in FIG. Is hanging. The closing plate 21 has a larger area than the suction hole 12, and the outer diameter of the valve rod 22 is slightly smaller than the inner diameter of the suction hole 12. As shown in FIG. 1, the valve rod 22 is inserted into the suction hole 12, and normally, the tip of the valve rod 22 projects slightly below the suction surface 11, and the lower surface of the closing plate 21 is moved by gravity to the suction surface 11. The suction hole 12 is in close contact with the back surface 15 and is closed by the closing plate 21.

Next, the operation of the hydraulic inorganic molded article transfer device of the present invention shown in FIGS. 1 and 2 will be described with reference to FIGS.
As shown in FIG. 4, a hydraulic inorganic molded body 4 formed by an extruder (not shown) and cut into appropriate lengths is transferred by the conveyor 3 and reaches a position below the suction cup 1 and stops. In this case, the tip of the valve rod 22 projects slightly below the suction surface 11, and the lower surface of the closing plate 21 is in close contact with the back surface 15 of the suction surface 11 due to gravity, and the suction hole 12 is closed by the closing plate 21. .

Next, as shown in FIG. 5, when the suction cup 1 is lowered to bring the suction surface 11 of the suction cup 1 into close contact with the upper surface of the molded body 4, the lower end of the valve rod 22 of the suction valve 2 is moved to the upper surface of the molded body 4. , The suction valve 2 rises, the closing plate 21 floats from the back surface 15 of the suction surface 11, and the suction hole 12 has a reduced pressure in the cavity 1.
3 and the molded body 4 is adsorbed on the adsorption surface 11.

Next, as shown in FIG. 6, when the suction cup 1 is raised, the molded body 4 rises together with the suction cup 1 while being sucked on the suction surface 11 and floats from the conveyor 3. Furthermore,
When the suction cup 1 on which the molded body 4 is adsorbed is moved to a receiving mold (not shown) and the pressure in the cavity 13 is returned to the atmospheric pressure, the molded body 4 falls on the receiving mold. Thereafter, the same operation is repeated.

As shown in FIG. 7, when the compact 4 is short, the compact 4 does not adhere to a part of the suction surface 11 when the compact 4 is adsorbed on the suction surface 11 of the suction cup 1. Even if a portion occurs, the suction valve 2 on the suction surface 11 falls,
As a result of the closing plate 21 of the suction valve 2 closing the suction hole 12, the inflow of air from the suction hole 12 is prevented, the pressure in the cavity 13 is maintained, and the molded body 4 does not fall from the suction cup 1.

FIG. 8 is a cross-sectional view showing an example of the demolding apparatus for the hydraulic inorganic molded article of the present invention, and FIG. 9 is a view from the adsorption surface side of the back surface of the demolding apparatus for the hydraulic inorganic molded article of the present invention shown in FIG. FIG.

8 and 9, reference numeral 1a denotes a stainless steel suction cup of a device for removing the hydraulic inorganic molded article of the present invention, 11a denotes an adsorption surface provided on the lower surface of the suction cup 1a, and 12a, 12a.
Is a suction hole provided at substantially equal intervals on the entire surface of the suction surface 11a; 13a is a hollow portion provided inside the suction cup 1a; the hollow portion 13a is connected to a vacuum pump (not shown) by a suction pipe 14a; The part 13a is maintained in a reduced pressure state.

Numeral 2a denotes a brass suction valve provided in each of the suction holes 12a, 12a,..., As shown in FIG. Is hanging. The closing plate 21a has a suction hole 12a.
The outer diameter of the valve rod 22a is slightly smaller than the inner diameter of the suction hole 12a. As shown in FIG. 8, the valve rod 22a is inserted into the suction hole 12a,
Normally, the tip of the valve rod 22a projects slightly below the suction surface 11a, and the lower surface of the closing plate 21a is in close contact with the back surface 15a of the suction surface 11a due to gravity, and the suction hole 12a is closed by the closing plate 21a.

Next, the operation of the apparatus for removing a hydraulic inorganic molded article of the present invention shown in FIGS. 8 and 9 will be described with reference to FIGS. As shown in FIG. 11, a hydraulic inorganic molded body 4 is formed between a lower mold 5 and an upper mold (not shown), and after the upper mold is moved, the present invention is formed above the hydraulic inorganic molded body 4. The suction cup 1a of the device for removing a hydraulic inorganic molded product is moved.

Next, as shown in FIG. 12, when the suction cup 1a is lowered to bring the suction surface 11a of the suction cup 1a into close contact with the upper surface of the molded body 4, the lower end of the valve rod 22a of the suction valve 2a is brought into contact with the upper surface of the molded body 4. , The suction valve 2a rises, and the closing plate 21a
Rises from the back surface 15a of the suction surface 11a, and the suction holes 12a
Is opened to the cavity 13a in which the pressure is reduced, and the molded body 4 is adsorbed on the adsorption surface 11a.

Next, as shown in FIG. 13, when the suction cup 1a is raised, the compact 4 rises together with the suction cup 1a while being sucked on the suction surface 11a, and is released from the lower mold 3. Further, when the suction cup 1a on which the molded body 4 is adsorbed is moved to a receiving mold (not shown) and the pressure in the cavity 13a is returned to the atmospheric pressure, the molded body 4 falls on the receiving mold. Thereafter, the same operation is repeated.

As shown in FIG. 14, the suction surface 1 of the suction cup 1a
After the molded body 4 is adsorbed on the first molded body 1a, even if a part of the molded body 4 is separated from the suction surface 11a for some reason, the suction valve 2a that is in contact with the separated part of the molded body 4 drops and is sucked. As a result of the closing plate 21a of the valve 2a closing the suction hole 12a, the inflow of air from the suction hole 12a is prevented, the pressure in the cavity 13a is maintained, and there is no danger that the compact 4 will fall from the suction cup 1a.

Although the embodiment of the present invention has been described with reference to the drawings, the specific embodiment of the present invention is not limited to the illustrated embodiment of the present invention, but departs from the gist of the present invention. Various design changes that do not occur are included in the scope of the present invention.

For example, a packing may be provided on the lower surface of the closing plate of the suction valve.

[0034]

In the apparatus for transferring a hydraulic inorganic molded article according to the first aspect of the present invention, when a part of the molded article is separated from the adsorption surface due to partial adsorption failure when the molded article is adsorbed on the suction cup,
Since the suction valve falls and the closing plate is in close contact with the back surface of the suction surface and closes the suction hole, the vacuum in the suction cup is not broken, and the molded article may drop from the suction cup during demolding. There is no.

When the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened.
When the compact comes into close contact with the suction surface of the suction cup, the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened, and the compact is sucked to the suction surface.

In the apparatus for removing a hydraulic inorganic molded article according to the second aspect of the present invention, when a part of the molded article is separated from the adsorption surface due to a partial adsorption failure when the molded article is adsorbed to the suction cup, Since the suction valve falls and the closing plate is in close contact with the back surface of the suction surface and closes the suction hole, the vacuum in the suction cup is not broken, and the molded article may drop from the suction cup during demolding. There is no.

When the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened.
When the compact comes into close contact with the suction surface of the suction cup, the closing plate of the suction valve rises from the back surface of the suction surface, the suction hole is opened, and the compact is sucked to the suction surface.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a device for transferring a hydraulic inorganic molded article of the present invention.

FIG. 2 is a perspective view of the transfer device of the hydraulic inorganic molded article of the present invention shown in FIG. 1 as viewed from the adsorption surface side.

FIG. 3 is a perspective view of a suction valve used in the apparatus for transferring a hydraulic inorganic molded article of the present invention shown in FIG.

FIG. 4 is a cross-sectional view showing a use mode of the apparatus for transferring a hydraulic inorganic molded article of the present invention shown in FIG.

FIG. 5 is a sectional view showing a step subsequent to the use mode shown in FIG. 4;

FIG. 6 is a sectional view showing a step subsequent to the use mode shown in FIG. 5;

FIG. 7 is a cross-sectional view showing a case where a molded body is short in the use mode shown in FIG. 6;

FIG. 8 is a sectional view showing an example of a device for removing a hydraulic inorganic molded article of the present invention.

9 is a perspective view of the demolding apparatus for the hydraulic inorganic molded article of the present invention shown in FIG. 1 as viewed from the suction surface side.

FIG. 10 is a perspective view of a suction valve used in the device for removing a hydraulic inorganic molded article of the present invention shown in FIG. 8;

FIG. 11 is a cross-sectional view showing a use mode of the demolding apparatus of the hydraulic inorganic molded article of the present invention shown in FIG.

FIG. 12 is a sectional view showing a step subsequent to the use mode shown in FIG. 11;

FIG. 13 is a sectional view showing a step subsequent to the use mode shown in FIG. 12;

FIG. 14 is a sectional view showing a state in which a part of the molded body is separated from the suction surface in the use mode shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Suction cup 11, 11a Suction surface 12, 12a Suction hole 13, 13a Cavity 2, 2a Suction valve 21, 21a Closing plate 22, 22a Valve rod 3 Lower mold 4 Molding body 5 Conveyor

Claims (2)

[Claims] An apparatus for transferring a hydraulic inorganic molded article, which is used for transferring an extruded hydraulic inorganic molded article cut to an appropriate length to a press die by a suction cup, wherein a lower surface of the suction cup is provided. A plurality of suction holes are provided on a suction surface provided in the suction hole, and a suction valve is provided in each suction hole. The suction valve has a valve rod having an outer diameter smaller than the inner diameter of the suction hole projecting below the closing plate. When the valve rod is inserted through each suction hole, the closing plate is closely contacted with the back surface of the suction surface to close the suction hole, and when the lower end of the valve rod projects below the suction surface, A suction device, wherein the suction hole is closed by the suction valve, and the suction hole is opened when the closing plate of the suction valve rises from the back surface of the suction surface. 2. A demolding apparatus for a hydraulic inorganic molded article, which is used when a press-formed hydraulic inorganic molded article is desorbed from a press die by a suction cup, wherein an adsorption surface provided on a lower surface of the suction cup. A plurality of suction holes are provided, each suction hole is provided with a suction valve, the suction valve is configured by projecting a valve rod having an outer diameter smaller than the inner diameter of the suction hole below the closing plate, When the valve rod is inserted through each suction hole, the closing plate is closely in contact with the back surface of the suction surface to close the suction hole, and when the lower end of the valve rod projects below the suction surface, the suction valve causes the suction hole to open. A mold release apparatus for a hydraulic inorganic molded article, characterized in that a suction hole is opened when the obstruction plate of the suction valve is closed and rises from the back surface of the suction surface.