JPS61127304A - Production unit for cement mortar molded shape - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cement mortar molded product manufacturing apparatus in which one molding surface of an upper and lower mold is connected to a vacuum blower outside the apparatus.

[Conventional technology]

In the production of cement tiles and other cement mortar molded products, high-quality molding can be achieved by incorporating a vacuum suction device and using vacuum suction power for water extraction and conveyance, instead of the type of equipment that squeezes water only by the pressing force of a press. It has become possible to manufacture products with high production capacity. (Tokuko Showa 54-2020
See No. 9. ) [Problems to be Solved by the Invention] In the water squeezing suction of this device, there is a problem in guiding the air that conveys the water. In devices where the formwork is attached to the lower mold, air can be introduced from the outer periphery of the molding surface, but when water is squeezed out from the upper mold and the formwork is attached to the upper mold, it is possible to introduce conveying air. There were difficulties. In addition, even if the molding surface is not flat and has irregularities, even if the lower mold has a formwork, it is difficult to squeeze water from the center of the molding surface even if air is simply introduced from the outer periphery of the molding surface. Moreover, sufficient water could not be extracted.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a cement mortar forming apparatus of the type mentioned at the outset, which can be adapted to various conditions with improved guidance for the introduction of conveying air for water extraction and suction.

[Means to solve the problem]

The object of the present invention is that one of the upper and lower molds has a plurality of water squeezing air guide grooves provided on its molding surface, one end of which is connected to the atmosphere or an air supply source, and the other end of which is connected to the air guide groove. a water squeezing suction passage whose lower end is connected to a vacuum suction source and whose other end is connected to a point of the guide groove separated from the connection point with the air supply passage; This can be achieved by providing a cement mortar molded product manufacturing apparatus characterized by having the following.

[For production]

By adopting such a configuration, relatively fine perforations can be omitted, manufacturing is easier than before, and the water squeezing and suction function can be improved.

In this way, the air for vacuum suction can be introduced through the air supply passage, and the grooves provided on the molding surface can guide the air more uniformly and more fully than before.
It is possible to increase the versatility of the equipment without considering the type of molding equipment or the shape of the molded product.In addition, conventional equipment has a relatively large number of suction holes on the molding surface, There were many passages, and the internal structure of the mold was complicated, which increased manufacturing costs.However, the grooves take the place of passages, and the number of passages guided to the vacuum suction connection part is smaller than before. Since the diameter can be increased, it has advantages such as easier molding.

〔Example〕

In the following, features of the invention will be explained in more detail with reference to the accompanying drawings, which illustrate some embodiments of the invention.

1 to 5 show one embodiment of the present invention, and FIG. 5 shows the entire molding apparatus to which the apparatus of the present invention is attached.

Hydraulic piston 2 that moves up and down in cylinder 1 installed in the machine frame
A sliding table 3 is fixed to the lower end of the slide table 3 via a piston rod, and an air cylinder 4 is attached to the lower side of the sliding table 3, and the air cylinder 4 is connected to the piston sliding inside the cylinder 4. It is slidably mounted on the bottom. An upper die 7 is attached to the lower surface of the sliding block 6, and a plurality of air guide grooves 9 for squeezing water are arranged and bored at regular intervals on the lower surface 8, which is a molding surface.

This water squeezing air guide groove 9 is communicated with a water squeezing suction passage 21 through a water squeezing suction hole 10, and from this passage 21 is connected to a vacuum source outside the apparatus, for example, a vacuum blower, via a suction pipe connection part 17. ing. A raw material supply device 11 is provided on the opposite side of the sliding block 6 from the side continuous with the piston rod 5. The sliding block 6 moves horizontally between two positions. In one position, when the upper mold 7 is lowered, a molding space can be formed together with the lower mold 12 and the mold frame 13.

At the other position, the lower surface 8 of the upper mold is vertically aligned with the pedestal 15 which is moved up and down by the cylinder 14, and at this position, the molded product conveyed by the upper mold 7 after being formed can be transferred to the pedestal. The mold frame 13 surrounding the lower mold 12 is slid against the lower mold 12 by a cylinder 20, and after molding, it is lowered and completely separated from the side of the molded product, and the molded product is moved against the lower mold 12 by the suction force of the upper mold 7. Helps break away from the mold. 16 is a molding material, and 19 is a molded product.

1 to 3 show an enlarged view of one embodiment of the present invention.

A plurality of water squeezing air guide grooves 9 (nine in the figure) parallel to one side of the square are formed in the substantially square bottom surface, that is, the molding surface 8 of the upper mold 7, and are arranged at substantially equal intervals. Both ends of the guide grooves 9 are spaced apart from opposite sides of the bottom surface 8 of the upper mold at a regular interval, and there is a space between the approximately square sections occupied by the plurality of guide grooves 9 and the outer periphery of the bottom surface of the upper mold 7. A gasket mounting groove 22 is also provided in a square shape, into which a gasket made of sponge rubber or the like is fitted. Wearing patchkin? A draining plate mounting screw hole 23 is provided in a narrow place between a22 and the outer periphery of the bottom surface of the upper mold. 3 running in a direction perpendicular to the direction in which the guide groove 9 extends
There is a cylindrical passage for books, and the center is the water squeezing suction passage 21.
Both sides are water squeezing guide conveyance air supply passages 24. Each of the water squeezing air guide grooves 9 is connected to the water squeezing suction passage 21 through a water squeezing suction hole 10 at the center, and connecting holes 25 at both ends.
It is connected to the conveying air supply passage 24 by. The water squeezing suction passage 21 is drilled through the mold, and one end is closed and a temporary 26
The other end is connected to a suction pipe connection part 17, and a suction pipe (not shown) connected to a vacuum blower or the like is connected to this connection part 17. One end of the conveying air supply passage 24 is also closed by a stop plate 27 and the other end is connected to a communication pipe 28. This communication pipe 28 has a branch path connected to the supply passage, and the other end is communicated with the atmosphere or connected to the discharge side of the vacuum blower, and a switching valve is provided to stop the communication, or the other end is connected to the atmosphere or the discharge side of the vacuum blower. Allow communication to the suction side. A draining iron plate 29, a wire mesh 30, and a dewatering cloth 31 are attached to the bottom of the upper mold 7 in this order in a conventional manner. Fourth
The draining iron plate 29 shown in the figure is the screw hole 2 for attaching the draining iron plate of the mold.
Attachment holes 32 matching 3 are appropriately formed around the periphery, and a large number of drainage holes 33 are arranged at regular intervals corresponding to the water squeezing air guide grooves 9 provided in the mold. The wire mesh 30 and the dewatering cloth 31 are attached to the draining iron plate 29 with their outer peripheries sandwiched between frames in advance to form a filtration unit as a whole.

If there is a square recess on the upper surface of the molded product, the molding surface 8 of the mold also has a protrusion 34 corresponding to the recess, and the draining iron plate 29 also has a corresponding protrusion 35 on the lower surface and a corresponding protrusion 35 on the upper surface. A recess is provided. The water squeezing air guide groove 9, draining iron plate 29, and draining hole 33 of the mold forming surface 8 are provided along this protruding portion in spite of this protruding portion. Therefore, despite the unevenness of the molding surface, air guidance is not hindered.

Because of the above structure, when the upper and lower molds 7°12 are engaged and pressure is applied, the vacuum blower (later the 17th mold
(explained with reference to the figure), water is squeezed from the mold forming surface, but conveying air is required for squeezing water, and this conveying air passes through the connecting pipe 28 and the supply passage 24. guided to the molding surface. When the pressure forming and water squeezing is completed, the molded product is adsorbed by the upper die and the upper die is lifted and conveyed, but the adsorption continues as is with the vacuum suction in the water squeezing suction passage 21.
The supply passage 24 is either isolated from the atmosphere or connected to the suction side of a vacuum blower using a switching valve to play the same role as the water squeezing suction passage 21, and the suction force is exerted from three routes, so the suction force is sufficient. It is. The water squeezing suction passage 21 and the conveying air supply passage 24 are provided with Utility Model Publication No. 56-42011 as appropriate.
A water supply pipe for cleaning as shown in No. 2 can be installed.

The width of the water squeezing air guide groove 9 can be selected arbitrarily, but if it is made too large, there is a risk that depending on the strength of the draining iron plate 29, it will be deformed by being bitten into the guide groove 9 by the press compression force, so there is a limit to its width. There is.

6 and 7 show another embodiment, in which the formwork 13
The present invention relates to a type of device in which an upper mold is provided with an upper mold, and the upper mold performs water extraction and suction and adsorption and conveyance of a molded product. This model has formwork 1
Since the upper mold 7 has to be moved up and down relative to the upper mold 7 3', it is necessary to make the upper mold 7 thicker. It has an advantageous characteristic that just by lengthening the rise of the hole 25, the effect of suction, etc. remains almost unchanged.

Figures 8 to 10 show a third embodiment, in which the arrangement of the upper and lower molds 7, 12 and the formwork 13 is the same as in the first embodiment (Figures 1 to 4); The air supply passage in this example is an air supply chamber 24' that occupies the entire interior of the mold, and the air supply chamber 24' is connected to the atmosphere or a vacuum blower through a connection port 41. In this embodiment, the water squeezing suction passage 21 is provided at the same position as in the previous two embodiments, but the other space is used as an air supply chamber 24', and in order to communicate with the entire supply chamber, the water squeezing suction passage 21 is provided in the same position as in the previous two embodiments. A communication gap 42 is provided above.

In this embodiment, since the air supply chamber 24' occupies the entire inside of the mold, the number of connecting holes 25 that communicate the conveying air supply chamber 24' and the water squeezing air guide groove 9 can be increased as needed. As shown in Figure 9, the water extraction suction hole 10 and the connecting holes 2 on both sides
Another connecting hole 25 can be provided in the middle of the connecting hole 5 to solve the problem of water squeezing in that part. This embodiment requires less material for molding, thereby reducing manufacturing costs, and is also advantageous in casting. 43 is the air supply chamber 24'
It is a lid that closes the

The embodiment shown in FIGS. 11 and 12 shows an embodiment that includes a mechanism for communicating and blocking the air to the air supply passage 24. An opening/closing plate 50 can come into contact with one end of the supply passage 24, and the opening/closing plate 50 is attached to a piston rod 55 fixed to a piston 54, and this piston 54 is provided in an example of a mold. It slides within the cylinder chamber 53 of the cylinder 52 spaced apart from the end. Both sides of the cylinder chamber 53 via the piston 54 are connected to an air switching valve (not shown) by an air supply pipe 56.

The embodiments shown in FIGS. 13 to 16 show the air guide groove 9 for squeezing water.
' are provided radially. This embodiment is distinctive in that the guide grooves 9 of the previous embodiments are arranged in parallel. The air supply chamber 24' is similar to the embodiment of FIGS. 8 to 10, and forms an annular chamber occupying the outer periphery of the entire interior of the mold, and is connected by connecting holes 25 arranged on the four sides of a square. It communicates with the outer end of the radial guide 1119'. The air supply chamber 24' is connected to the atmosphere or a vacuum blower through a connection port 61. The inner end of the guide groove 9' is connected to one central cylindrical water squeezing suction chamber 62 by a water squeezing suction hole 10, and this water squeezing suction chamber 62 is connected to a suction pipe by a water squeezing suction passage 21'. It communicates with section 17.

The air supply chamber 24' and the central water squeezing suction chamber 62 are closed by a lid 63. As shown in FIG. 16, the drainage iron plate 29 is provided with drainage holes on a line aligned with the radially running guide grooves 9' shown in FIG. 13.

The vacuum blower used in the cement mortar molded product manufacturing apparatus of the present invention can be the one shown in Japanese Utility Model Publication No. 56-42013. An example of a modification that is suitable for this purpose is shown below. The other end of the suction pipe 71, one end of which is connected to the connection part 17 of the previous embodiments, is connected via a vacuum pressure regulating valve 72 to the upper part of a centrifugal separator 74 whose lower end is closed by a drain movable valve 7. Connected to the entrance provided. At the top of the centrifugal separator 74 is an exhaust pipe 7.
5 is attached, and its exhaust pipe 75 is connected to the inlet of a vacuum switching valve 76. This switching valve 76 is connected directly to the vacuum blower.
77, the first wind rotary centrifuge 74
A second wind rotary centrifuge 78 of the same type may be interposed. 79 is a silencer attached to the vacuum switching valve 76, and 80 is a separation drain lid attached to the lower end of the second wind-powered rotary centrifuge 78. The illustrated device has a second valve upstream of the vacuum pressure regulating valve 72.
It is connected to a connecting pipe 82 provided with a vacuum switching valve 81 and connected to the first
Connected to the communication pipe 28 in the figure, or the connection port 41 in FIG.
, is connected to the connection port 61 in FIG. Second vacuum switching valve 8
1 is raised when the molded product manufacturing apparatus of the present invention is in operation and molding is in progress, and air is blown into it from the air blowing port 83. When the molded product is being conveyed by suction in the manufacturing apparatus, the switching valve 81 is lowered, and no air enters or exits through the air blowing port 83. In the embodiment shown in FIG. 17, the connecting pipe 82 is the suction pipe 71.
It is connected to this upstream of the vacuum pressure regulating valve 72,
One method is to connect this to the exhaust of a vacuum blower.

[Brief explanation of drawings]

FIG. 1 is a bottom view of an upper die showing one embodiment of the molded product manufacturing apparatus of the present invention. Figure 2 is a sectional view taken along line n--■ in Figure 1 together with the lower mold, Figure 3 is a cross-sectional view taken along line ■-■ in Figure 1 together with the lower mold, and Figure 4 is FIG. 1 is a bottom view of a drainage iron plate attached to the bottom of an upper mold, and FIG. 5 is a schematic longitudinal sectional view of the entire molded product manufacturing apparatus to which the upper mold is attached according to the present invention. FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 7 of the upper and lower molds showing the second embodiment of the present invention, and FIG.
FIG. FIG. 8 is a plan view of an upper mold showing a third embodiment of the present invention; FIG.
The figure is IX- in Fig. 10 showing the upper mold in Fig. 8 together with the lower mold.
10 is a cross-sectional view taken along line IX, and FIG. 10 is a cross-sectional view taken along line XX in FIG. FIG. 11 is a bottom view of an upper die showing a fourth embodiment of the present invention, and FIG. 12 is a sectional view taken along the line xn-x■ in FIG. 11. FIG. 13 is a bottom view of the upper mold showing the fifth embodiment of the present invention, FIG. 14 is a sectional view taken along the xrv-xrv line in FIG. 13,
FIG. 15 is a sectional view taken along line xv-xv in FIG. 13, and FIG. 16 is a bottom view of the draining iron plate attached to the bottom surface of the upper mold in FIG. 13. FIG. 17 shows an improved type of vacuum blower to be used in the molded article manufacturing apparatus of the present invention. 7... Upper die, 8... Upper die molding surface, 9... Water squeezing air guide groove, 24... Air supply passage.

Claims (1)

[Claims] One of the upper and lower molds has a plurality of water squeezing air guide grooves provided on its molding surface, and at least one air whose one end is connected to the atmosphere or an air supply source and whose other end is connected to the air guide groove. It is characterized by having a supply passage or a supply chamber, and a water squeezing suction passage whose one end is connected to a vacuum suction source and whose other end is connected to a point of the guide groove separated from the connection point with the air supply passage. Cement mortar molded product manufacturing equipment.