JPH10278020A - Molding equipment for cement moldings - Google Patents

Abstract

(57) [Problem] To provide a molding device for a cement molding, which surely dewaters and discharges excess water contained in a raw material filled between an upper mold and a lower mold to the outside. SOLUTION: The mold has an upper mold 3 and a lower mold 2, and these molds are provided with drainage portions 20 and 30 which are opened on the mold surface, and a suction pipe is provided downstream of the drainage portions 20 and 30. 41 ・
42 is connected, and the excess water of the raw material interposed between the upper mold 3 and the lower mold 2 is removed by the suction means 4 into the water draining section 20.
In the apparatus for molding a cement molded product that is suction-removed via the suction pipes 30 and the suction pipes 41 and 42, a storage chamber 50 for the removal water is provided downstream of the drainage section 30 of the upper mold 3. While the suction pipe 42 is opened upward in the inside, the storage chamber 50 is provided with an outlet 52 for the removal water,
The outlet 52 is provided with a closing lid 53 for closing the outlet 52 when excess water of the raw material is sucked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an apparatus for molding a cement molding.

[0002]

2. Description of the Related Art In general, a molding apparatus of this type is provided with an upper mold and a lower mold as shown in Japanese Utility Model Publication No. Hei. And a suction pipe connected to the downstream side of the drainage part. The water contained in the cement raw material interposed between the upper mold and the lower mold is drained by a suction pump. Then, the raw material is pressed into a desired shape by an upper mold and a lower mold while removing excess moisture in the cement raw material by suction through a suction pipe.

[0003]

In the above molding apparatus, as described above, when the cement raw material is pressurized by the upper and lower molds, the water contained in the cement raw material is removed by the suction pump through the drainage section. Although vacuum dewatering is performed, since the water dewatered from the cement raw material contains cement, the cement is easily deposited in the suction pipe having a particularly large flow rate due to the continuous dewatering operation, and the suction pipe is clogged. The water removed from the cement raw materials cannot be discharged smoothly to the outside, and the water that has accumulated in the drainage section flows again between the mold surface of the mold and the surface of the molded product. And the surface of the molded product is whitened during the curing process of the molded product, and furthermore, the suction tube is blocked, so that the vacuum dehydration operation cannot be performed smoothly, and the dehydration failure of the molded product may occur. A.

The present invention has been developed in view of the above-mentioned circumstances, and an object of the present invention is to surely dehydrate excess water contained in a raw material filled between an upper mold and a lower mold. An object of the present invention is to provide a molding device for a cement molded product that can be discharged to the outside.

[0005]

In order to achieve the above object, the present invention comprises an upper mold 3 and a lower mold 2, and these molds are provided with drainage portions 20, 30 which are opened on the mold surfaces. A suction pipe 4 is provided on the downstream side of the drainage sections 20 and 30.
1 and 42 are connected, and the excess water of the raw material interposed between the upper mold 3 and the lower mold 2 is removed by the suction means 4 into the drainage section 2.
In a molding apparatus for a cement molded product that is suction-removed through the suction molds 0 and 30 and the suction pipes 41 and 42, a storage chamber for water to be removed is provided downstream of at least one of the water drains 30 of the upper mold 3 and the lower mold 2. 50 is provided to open the suction pipe 42 above the storage chamber 50, while the storage chamber 50 is provided with a discharge port 52 for discharging the removed water to the outside, and the discharge port 52 is provided with the discharge port 52. Is provided with closing means 53 for closing the discharge port 52 when the excess water of the raw material is sucked by the suction means 4.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a molding device for a cement molded product shown in FIG. 1 is for molding a cement molded product 1 having a partially thick portion 10. 1
The lower mold 2 includes a lower mold 2 having a drain unit 20 and an upper mold 3 having a second drain unit 30. The lower mold 2 includes a lower mold body 22 installed on a fixed base 21 and a lower mold body 22. And the lower mold member 23 assembled above.

[0007] The lower mold member 23 is for molding the inner surface of the cement molded product 1, and the upper surface thereof is a mold surface 23 a for molding. A large number of formed drain holes 24 are open. At the periphery of the lower surface of the lower mold member 23, a space forming frame 25 is provided.
Are protruded over the entire circumference, and the lower mold member 23 is
In a state where the mounting portion 22a is mounted on the mounting portion 22a,
a water drain space 26 is formed between the lower mold member 23 and the lower mold member 23.
7 are laid. The filter medium 27 is formed by the above-mentioned drainage hole 2 formed by the cement compound as a raw material of the cement molding 1.
4 is made of a filter cloth, a wire mesh, or the like, and the filter medium 27 is covered with the above-described space forming frame 25 in a state of covering the periphery of the lower mold member 23. Is fixed by a fixing member 28.

A suction chamber 29 is defined between the lower die body 22 and the fixed base 21, and the suction chamber 29 is
The drainage space 26 is communicated with the drainage space 26 via a suction hole 22b provided in the attachment portion 22a of the lower die body 22, and the first drainage portion 20 is connected to the drainage hole 24, the drainage space 26, and the suction hole. 22b and the suction chamber 29. Further, a first suction pipe 41 is connected to the suction chamber 29 constituting the first drainage section 20, and a suction pump 4 as suction means is provided downstream of the first suction pipe 41.

On the other hand, the upper mold 3 is composed of a movable vertical mold 3a and a movable inclined mold 3b.
a forms a cavity space that becomes the thin portion 11 of the cement molding 1 with the lower mold 2, and the lower surface thereof forms a molding surface 31.
The movable vertical mold 3a is vertically movable by a driving means (not shown).

The movable inclined mold 3b forms a cavity space with the lower mold 2 to be the thick part 10 of the cement molding 1, and can be moved up and down obliquely by driving means (not shown). And The movable inclined mold 3b shown in FIG.
An inclined mold body 31 and a mold member 32 are provided.
The lower surface of the mold member 32 is a mold surface 32a for molding. The mold surface 32a has a large number of drain holes 33 formed in the mold member 32, and the mold surface 32a of the mold member 32 has Similarly to the lower die member 23, a filter medium 34 is laid.

The filter member 34 has its peripheral portion fixed to the peripheral portion on the lower surface of the mold member 32 by a fixing member 35. Further, a suction chamber 36 is defined between the inclined mold body 31 and the mold member 32, and the suction chamber 36
The second drain portion 30 communicates with the drain hole 33 formed in the second drain hole 2, and the drain hole 33 and the suction chamber 36 constitute the second drain portion 30.

In the embodiment shown in FIG.
The opening on the mold surface 23a side of the drain hole 24 formed at the bottom is located above the opening on the drain space 26 side,
The opening on the mold surface 32 a side of the drain hole 33 formed in the mold member 32 is located below the opening on the suction chamber 36 side. Thus, in the above-described molding apparatus, in the embodiment shown in the figures, the storage chamber 50 for the removed water is provided particularly on the downstream side of the second drainage section 30 through which a large amount of squeezed water flows. The housing 5 having the storage chamber 50 is detachably attached to the lower outer surface of the inclined main body 31 so that the lower part of the suction chamber 36 constituting the second drainage part 30 communicates with the upper part of the storage chamber 50. And at the top wall of the housing 5,
A communication hole 51 having one end opened to the upper surface of the storage chamber 50 and the other end opened to the outer surface of the housing 5 is formed. Then, one end of a second suction pipe 42 is connected to the communication hole 51, and the second suction pipe 42 is opened above the storage chamber 50 through the communication hole 51, and the second suction pipe 42 is opened.
Is connected to the suction pump 4.

In the lower part of the side wall of the housing 5, the storage chamber 50 is opened to the outside of the housing 5, and the storage chamber 5 is opened.
In addition to forming a discharge port 52 for discharging the removed water accumulated in the housing 5 to the outside of the housing 5, the discharge port 5 is formed in the side wall.
2 is supported by a hinge 54 so as to be swingable via a hinge 54, and the closing lid 53 is driven by the weight of the closing lid 53 and the negative pressure in the storage chamber 50 caused by the driving of the suction pump 4.
Is brought into close contact with the outlet 52, and the outlet 52 is closed with a closing lid 53.

In the embodiment shown in the drawings, a rubber packing 55 is attached to the outer wall of the housing 5 around the outer periphery of the outlet 52, and when the outlet 52 is closed by the closing lid 53, the outside of the housing 5 is closed. Air is in storage room 50
So that it does not flow into the interior. In the figure, 6
Indicates an air blow pipe connected to the suction chamber 36 of the second drain unit 30.

In the above-described molding apparatus, the upper mold 3 and the lower mold 2 compress and mold the raw material interposed in the cavity defined by the two molds 3. First and second drainage portions 20 via pipes 41 and 42
・ As the pressure in 30 and in the storage chamber 50 decreases,
The storage chamber 5 associated with the weight of the closing lid 53 and the driving of the suction pump 4
0, the inner surface of the closing lid 53 comes into close contact with the packing 55 of the outlet 52, and the outlet 52 closes the closing lid 53.
And the water contained in the raw material in the cavity is dehydrated through the drainage portions 20 and 30. That is, in the portion corresponding to the thin portion 11 of the cement molding 1, the first water is removed. The part corresponding to the thick part 10 of the cement molding 1 while being dehydrated via the punching part 20 is:
The water is dehydrated through both the first draining section 20 and the second draining section 30.

In particular, the water squeezed by the suction force of the suction pump 4 through the second drainage section 30 is supplied to the storage chamber 50.
Since it is temporarily stored at the bottom of the inside and does not flow into the second suction pipe 42 opened above the storage chamber 50, and the outlet 52 is securely closed by the closing lid 53, The suction power of the suction pump 4 does not decrease. On the other hand, with the completion of the dehydration of the excess water contained in the raw material and the completion of the molding by the upper and lower dies 2.3, the drive of the suction pump 4 is stopped and the blow pipe 6 is used to remove the molded product. When air is introduced into the suction chamber 36 in this way, the negative pressure in the storage chamber 50 communicating with the suction chamber 36 is released, the closing lid 53 opens, and the water temporarily stored in the storage chamber 50 is discharged as described above. It is discharged from the discharge port 52 to the outside.

As described above, according to the above-mentioned molding apparatus, the excess water can be surely dewatered from the raw material, and in addition, the second part corresponding to the thick part 10 of the molded product, in which the water is particularly squeezed out.
In the water draining section 30, the water removed by the second water draining section 30 does not flow through the suction pipe 42.
This prevents the suction pipe 42 from being clogged by the cement component contained in the water removal.

Further, since the housing 5 having the storage chamber 50 is detachably assembled to the inclined main body 31, maintenance in the storage chamber 50 can be easily performed. In the above embodiment, the second drain portion 3 in which a large amount of squeezing flows in particular.
The storage chamber 50 is provided only on the downstream side of the first drainage unit 20.
It is also possible to provide a storage chamber 50 provided with the storage chamber 2 and open the suction pipe 41 above the storage chamber 50.

In the above embodiment, the housing 5
In addition, a closing lid 53 of the outlet 52 is swingably supported via a hinge 54 so that the weight of the closing lid 53 and the suction pump
Due to the negative pressure in the storage chamber 50 due to the driving of the
2 is closed by the closing lid 53, but is electrically operated, for example, in accordance with the operating condition of the molding apparatus, and the discharge port 5 is closed.
An opening / closing lid for opening / closing 2 may be provided.

[0020]

As described above, according to the first aspect of the present invention, a storage chamber for the removed water is provided downstream of at least one of the upper and lower mold draining portions, and the removal water is provided above the storage chamber. While the suction pipe is opened, the storage chamber is provided with a discharge port for discharging the removed water to the outside, and the discharge port is connected to the discharge port when the excess water of the raw material is sucked by the suction unit. By providing a closing means to close,
At the time of sucking the excess water of the raw material by driving the suction means,
Since the discharge port is closed by the closing lid and the water drain section and the storage chamber are maintained at a negative pressure, suction of excess water by the suction means is reliably performed, and the water removed through the water drain section is removed from the storage chamber. Was temporarily stored in the storage chamber, and did not flow into the suction pipe opened above the storage chamber. Further, with the completion of the dehydration of the excess water contained in the raw material, the closing lid was opened and the storage was temporarily stored in the storage chamber. Water can be reliably discharged from the discharge port to the outside.Therefore, there is no trouble that the suction pipe is clogged, and the excess water contained in the raw material filled between the upper mold and the lower mold can be stably removed. In addition, dehydration can be reliably performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a molding device according to the present invention.

[Explanation of symbols]

 2 Lower mold 3 Upper mold 30 Second water draining part (water draining part) 4 Suction means 42 Suction tube 50 Storage chamber 52 Outlet 53 Closing lid (closing means)

Claims (1)

[Claims] An upper mold and a lower mold are provided, and these molds are provided with a drainage opening in the mold surface, and a suction pipe is connected to a downstream side of the drainage to connect the upper mold and the lower mold. In a molding device for a cement molded product in which excess moisture of a raw material interposed between the lower mold and the lower mold is suction-removed by the suction unit through the drainage unit and the suction pipe, at least one of the upper mold and the lower mold is used. A storage chamber for removing water is provided on the downstream side of the drainage section, and the suction pipe is opened above the storage chamber, and a discharge port for discharging the removal water to the outside is provided in the storage chamber. In addition, a closing means for closing the discharge port when the excess water of the raw material is sucked by the suction means is provided at the discharge port.