JPS61130006A - Hydroextracting iron plate for production unit of 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 (Unknown field of application) The present invention relates to a drainage iron plate for a cement mortar molded product manufacturing apparatus.

[Conventional technology]

A conventional draining iron plate is a flat metal plate shaped to correspond to the molding surface, which is usually square or rectangular, and has a large number of drain holes arranged relatively evenly, usually like the holes in the base.

The manufacture of cement tiles and other cement I to mortar molded products is achieved by incorporating a vacuum suction device and using vacuum suction power for water extraction and transportation, instead of the type of equipment that squeezes water only by the pressing force of a press. It became possible to manufacture high-quality molded products with high production capacity (Special Publication Act, 1974.-
(See No. 20209).

[Problem that the invention seeks to solve]

The water squeezing and suction of this molded product manufacturing apparatus has 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 and suctioned from the upper mold and the formwork is attached to the upper mold, air can be introduced from the outside of the molding surface. There were difficulties in introducing it. In addition, even if the molding surface is not flat and has irregularities, even if the lower mold has a formwork, it may be difficult to squeeze water from the center of the molding surface even if air is introduced from the outer periphery of the molding surface. Moreover, sufficient water could not be extracted.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a drainage iron plate for a cement mortar molded product manufacturing apparatus that can be adapted to various conditions and has improved introduction guidance for one-stroke air for water extraction and suction.

Means for Solving Problem C] An object of the present invention is to provide a draining iron plate main body that has a shape that matches the molding surface of the mold that performs water extraction in one of the upper and lower molds and is joined to the molding surface. A plurality of water squeezing air guide grooves are drilled on the contact surface with the mold, the arrangement and length of which connects the air supply passage provided in the mold and the water squeezing suction passage at a substantial distance. However, this can be achieved by providing a drainage iron plate for a vacuum water-squeezing type cement 1-hemortar molded product manufacturing apparatus, which is characterized in that drainage holes are provided at appropriate intervals in the guide groove.

[For production]

By adopting such a configuration, relatively fine perforations in the mold can be omitted, making manufacturing easier than before and improving the water squeezing and suction function.

In addition, the air for vacuum suction can be introduced through the air supply passage, and the grooves provided in the draining iron plate can guide the air more uniformly and more fully than before, so the type of molding equipment, molding The versatility of the device can be increased without considering the shape of the product. In addition, the conventional mold had a relatively large number of suction holes on the molding surface, and the number of suction passages was also large, making the internal structure of the mold complicated and increasing manufacturing costs. The grooves formed in the grooves serve as passages, and the number of passages guided to the vacuum suction connecting portion can be reduced compared to the conventional method, and the diameter can be increased, which 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 implementations (+11) of the invention.

1 to 7 show one embodiment of the present invention, and FIG. 7 shows an entire molding apparatus including several apparatuses of the present invention.

A sliding table 3 is fixed via a screw rod to the lower end of a hydraulic piston 2 that moves downward in a cylinder 1 provided in the machine frame.
An air cylinder 4 is attached to the lower side of the slide table 3, connected to a piston that slides inside the cylinder 4, and is slidably mounted on the lower side of the slide table 3. An upper mold 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 upper surface of the draining iron plate 29 (see Figs. (See Figure 3). This water squeezing air guide groove 9 is communicated with the water squeezing suction passage 21 of the mold via the water squeezing suction hole 10 of the mold, and from this passage 21 the suction pipe connecting portion 17
It is connected to a vacuum source outside the apparatus, such as a vacuum blower, through the . 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, the lower mold 12 and the formwork 13
This is the position where a molding space can be formed. 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 delivered to the pedestal. The mold frame 13 surrounding the lower mold 12 is slid against the lower mold 12 by the cylinder 20, and after molding, it is lowered and completely separated from the side of the molded product, and the molded product is removed from the lower mold 12 by the suction force of the second mold 7. Helps break away from the mold.

16 is a molding material, and 19 is a molded product.

1 to 3 show one embodiment of the draining iron plate of the present invention.

The upper surface of the draining iron plate 29 is provided at the center of the lower part of the mold, corresponding to the recess provided at the upper part of the molded product.

It has a recessed part 35 that engages with the protrusion 34, and the lower surface has a corresponding protrusion 36. Without considering the recessed portions, drainage holes 33 are arranged in parallel in nine vertical rows in the plan view, each row having 17 holes, and are regularly distributed over the entire surface except for the periphery. Similarly, vertical water squeezing air guide grooves 9 are bored in parallel on two sides of the drain plate 29 so as to encompass each row of drain holes. Both ends of each of the guide grooves 9 are connected to the lower ends of a connecting hole 25 that connects the water squeezing guide +a air supply passage 24 provided in the mold 7 and the mold surface. Further, the center of the guide groove 9 communicates with the lower end of the water squeezing suction hole 10 that connects the water squeezing suction path 21 provided in the mold 7 with the mold surface. Further, the draining iron plate 29 is suitably provided with mounting holes 32 around the periphery thereof, which match with the screw holes 23 for attaching the draining iron plate of the mold.

4 to 6 show one embodiment of a molding die using the draining iron plate of the present invention. A square packing fitting groove 22 is provided slightly inside the outer periphery of the bottom surface of the upper die 7, into which a packing such as sponge rubber is fitted. A screw hole 23 for attaching a draining iron plate is located in a narrow place between the gasket mounting groove 22 and the outer periphery of the bottom of the upper mold.
will be provided.

Inside the mold 7, there are three cylindrical passages running in parallel, the center being a water squeezing suction) m path 21, and the water squeezing guide conveyance air supply passages 24 on both sides. Each of the water squeezing air guide grooves 9 of the draining iron plate 24 is connected to the water squeezing suction passage 21 at the center through a water squeezing suction hole 10 in the mold, and at both ends through a connecting hole 25 in the mold. It is connected to the air supply passage 24. The water squeezing suction passage 21 is bored through the mold, one end is closed by a stop plate 26, and the other end is connected to the suction pipe connection part 17.
A suction pipe (not shown) connected to a vacuum blower or the like is connected to this connecting portion 17. The carrier air supply passage 24 is 1 yg+ is also the stop plate 2
7, 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 connected to the atmosphere or to the discharge side of a vacuum blower, and a switching valve is provided to stop communication, or the other end is connected to the atmosphere or to the discharge side of a vacuum blower. to the suction side. On the bottom surface of the upper mold 7, the draining iron plate 29, the wire mesh 30, and the dewatering cloth 31 of the present invention are sequentially superimposed and attached as in the conventional manner. The draining iron plate 29 is suitably provided with mounting holes 32 around the periphery that match the screw holes 23 for attaching the draining iron plate of 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.

When the molded product has a square concave portion on two sides, the molding surface 8 of the mold also has a protrusion 34 corresponding to the concave portion, and the draining iron plate 29 also has a corresponding concave portion on the second side. 35 and a protrusion 36 is provided on the lower surface. The water squeezing air guide groove 9 and drain hole 33 of the drain iron plate 29 are provided along this protrusion despite this protrusion. Therefore, despite the unevenness of the molding surface, air guidance is not hindered.

With the above configuration, 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 it is by vacuum suction in the water squeezing suction passage 21, and the supply passage 24 is removed from the atmosphere. The suction force is sufficient because the suction force is exerted from three routes by either shutting it off or connecting it to the suction side of the vacuum blower using a switching valve to play the same role as the water squeezing suction passage 21. Water squeezing suction passage 21
and the conveyance air supply passage 24 as appropriate.
A cleaning water supply pipe as shown in No. 011 can be provided.

Although the width and depth of the water squeezing air guide groove 9 can be selected arbitrarily,
If it is made too large, there is a risk that the guide groove 9 will be deformed by the press compression force that will reduce the strength of the draining iron plate 29, so there is a limit to this.

FIGS. 8 and 9 show another embodiment, in which the formwork 13
This invention relates to a type of device in which a first type is provided with a first type, and a second type is used to squeeze out water and suction and convey a molded product. In this type, the upper mold 7 moves downward due to the downward movement of the formwork 13' with respect to the upper mold 7.
It is necessary to make the wall thicker, but in this case, the effect of suction etc. can be improved by simply lengthening the upright portion of the connecting hole 25 for the water squeezing suction hole 10 and the conveying air supply passage 24 compared to the previous embodiment. It has the advantageous property that it hardly changes.

In the embodiment shown in FIGS. 10 to 15, air guide grooves 9 for squeezing water are provided radially in the draining iron plate 29.

This embodiment is distinctive in that the guide grooves 9 of the previous embodiments are arranged in parallel. Further, in this embodiment, the air supply passage is an air supply chamber 24' that occupies the entire interior of the mold, and this air supply chamber 24' is connected to the atmosphere or a vacuum blower through a connection port 61. This air supply chamber 24' forms an annular chamber occupying the outer periphery, and communicates with the outer end of the radial guide groove 9 provided in the draining iron plate through connection holes 25 arranged on the four sides of the square. The inner end of the guide groove 9 of the draining iron plate is connected to one central cylindrical water squeezing suction chamber 62 by a plurality of water squeezing suction holes 10 arranged in the center of the mold. The water squeezing suction chamber 62 communicates with the suction pipe connecting portion 17 through the water squeezing suction passage 21 .

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. One modification of the device suitable for this purpose is shown. The other end of the suction pipe 71, one end of which is connected to the connection part 17 of the previous embodiments, is
It is connected to an inlet provided at the top of a centrifugal separator 74 whose lower end is closed by a drain movable valve 7. An exhaust pipe 75 is attached to the top of the centrifugal separator 74, and the exhaust pipe 75 is connected to the inlet of a vacuum switching valve 76. This switching valve 76 may be directly connected to the vacuum blower 77, but a second wind-powered rotary centrifuge 78 of the same type as the first wind-powered rotary centrifuge 74 may be interposed therebetween. 79 is a silencer attached to the vacuum switching valve 76;
Reference numeral 80 denotes a separation and drainage lid provided at the lower end of the second wind-powered rotary centrifugal separator 78. The illustrated device is connected to a connecting pipe 82 provided with a second vacuum switching valve 81 upstream of the vacuum pressure regulating valve 72, and this is connected to the communicating pipe 28 in FIG. 4 or the connecting port 61 in FIG. 13. The second vacuum switching valve 81 is raised when the molded product manufacturing apparatus using the draining iron plate of the present invention is in operation and is being molded, and air is blown into it from the air blowing port 83. When the molded product is being sucked and conveyed in the above-mentioned manufacturing device, the switching valve 81
is lowered, and no air can enter or exit from the air inlet 83.゛In the embodiment shown in Fig. 16, the connecting pipe 82 is connected to the suction pipe 71 upstream of the vacuum pressure regulating valve 72, but one method is to connect this to the exhaust of a vacuum blower. be.

[Brief explanation of drawings]

FIG. 1 is a plan view showing one embodiment of the draining iron plate for manufacturing molded products of the present invention. FIG. 2 is a side view of FIG. 1, and FIG. 3 is a sectional view taken along the line ■--■ in FIG. FIG. 4 is a bottom view of an upper mold showing one embodiment of a molded product manufacturing apparatus using the draining iron plate of the present invention. Fig. 5 is a sectional view taken along the line v-V in Fig. 4 together with the lower die, Fig. 6 is a sectional view taken along the line IV-IV in Fig. 4 together with the lower die, and Fig. 7 is a sectional view taken along the line IV-IV of Fig. 4 together with the lower die. 1 is a schematic vertical sectional view of the entire molded product manufacturing apparatus in which a draining iron plate of the present invention is attached to an upper mold. Fig. 8 is a sectional view taken along the line ■-■ in Fig. 9 of the upper and lower molds showing the second embodiment of the molded product manufacturing apparatus using the draining iron plate of the present invention; FIG. FIG. 10 is a plan view showing a second embodiment of the draining iron plate of the present invention. FIG. 11 is a side view of FIG.
The figure is a sectional view taken along the line xn-x■ in FIG. 10. FIG. 13 is a bottom view of the upper mold showing the third embodiment of the molded product manufacturing apparatus used for the draining iron plate of the present invention, and FIG. 14 is the bottom view of the upper mold.
A cross-sectional view taken along the line XIV-XIV in the figure, Figure 15 is
FIG. 4 is a sectional view taken along the line xv-xv in FIG. 3; FIG. 16 shows an improved type of vacuum blower to be used in the molded article manufacturing apparatus of the present invention. 9... Water squeezing air guide groove, 29... Draining iron plate, 33.
... drain hole, 35 ... recessed part, 36 ... protrusion part. Patent applicant Seiyu Ando Figure 13 3rW22 7\. . . . . . . 34 ° 0 0 00゜○00 "-〇〇°0 00 -] W ○ ○oOO twin, ,, -,,,, - 40 Hi-kari V8 To

Claims (1)

[Claims] One of the upper and lower molds has a shape that matches the molding surface of the mold that performs water extraction, and an air supply provided in the mold is placed on the contact surface with the mold of the draining iron plate body that is joined to this. A plurality of water squeezing air guide grooves having a length and arrangement that connect the passage and the water squeezing suction passage at a substantial interval are bored, and drainage holes are provided at appropriate intervals within the guide grooves. A draining iron plate for a vacuum water-squeezing type cement mortar molded product manufacturing device.