JPS61291105A - Method and device for manufacturing reinforced cement mortarmolded 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 [Industrial Field of Application] The present invention relates to a method and apparatus for producing a cement mortar molded product suitable for building materials and the like.

[Prior art]

Regarding cement and mortar molded products in general, those that are automatically press-formed by squeezing water at the same time as compression were developed in the 1970s.
No. 4-20209.

Although such a molded product is sufficient as a roofing material, it has insufficient bending strength compared to asbestos boards made of aluminum alloy and is not suitable as a flooring material that bears weight. Aluminum alloy plates are expensive in terms of materials and processing, and asbestos plates are also expensive in terms of materials and processing, and also require cutting.

[Problem that the invention seeks to solve]

Therefore, the object of the present invention is to provide a method for manufacturing cement mortar molded products, which is a material that requires bending strength, and which can produce inexpensive cement mortar molded products using a molding method that can reduce production costs due to manufacturing speed and automation. To provide manufacturing equipment.

[Failure to solve the problem]

In order to achieve such an object, the present invention provides a method for disposing reinforcing plates or reinforcing nets at intervals on or above the lower molding surface before feeding the remaining part of the cement 1/mortar material into the molding mold. , it is an object of the present invention to provide a method for producing a reinforced cement mortar molded product, which is characterized in that the material is supplied and then pressure-molded while being forced to squeeze out water.

Further, the present invention has an upper mold provided at the lower end of the press that moves up and down and a lower mold provided so as to be able to fit together, and a plurality of suction holes are provided on the molding surface of the upper mold or the lower mold to perform pressure molding. In a cement mortar molded product manufacturing device that performs water extraction at the same time,
The present invention provides an apparatus for producing a cement mortar molded product, characterized in that a device for supplying a reinforcing plate or a reinforcing net toward the molding surface of the lower mold is provided.

[For production]

Cement products are strong against heavy pressure, but due to their low bending strength, they tend to break on the underside, peeling off, and cracking. Therefore, reinforcement nets with tensile strength make them extremely strong building materials, but press forming is automated and highly productive. This machine is revolutionary because it allows floor materials, especially floor base panels, with embedded reinforcing nets to be obtained.

As the reinforcing net, synthetic fibers such as nylon, Tetoron, polypropylene, Teflon, acrylic, hollyhinyl, polyvinylidene, and polyester, fiber Neso I such as glass fibers and carbon fibers, stainless steel and other metal nets can be used.

You can also use what is called reinforcing steel.

BRIEF DESCRIPTION OF THE DRAWINGS The features of the invention will be explained in more detail below with reference to the accompanying drawings, which illustrate embodiments of the invention.

〔Example〕

1 to 7 are process diagrams showing a first embodiment of the method and apparatus of the present invention.

The lower mold 1 consists of a lower mold body 3 supported by a support stand 2 and a formwork 4 that slides up and down on its outer periphery.
It is supported by a movable table 7 together with a cylinder 6 which houses a piston 5 which operates the piston 5, and this table 7 is horizontally reciprocated by a piston-cylinder device 8. Further, a pedestal 9 is mounted on the movable table 7 at a distance from the lower mold so as to be movable up and down with respect to a pedestal support 10, and a receiving plate 1l for receiving the molded product is placed on the pedestal 9. has been done.

The pedestal 9 is fixed to a piston rod 15 of a piston 14 which slides in a shilling chamber 13 in a pedestal support 10 against a spring 12. The upper die of the present invention is divided into an upper die 17 of the main press 1G and an upper die 19 of the sub-press 18 in this embodiment. The distance between the rain upper molds 17 and 19 is made to match the distance between the lower mold body 3 and the receiving plate 11. The main press 16 is attached to the lower end of a piston rod 23 of a piston 22 that slides within a cylinder chamber 21 of a main cylinder 20 attached to a suitable machine frame (not shown). A filter plate assembly 24 made of a dehydrating cloth and a wire mesh for supporting the dehydrating cloth, or a draining iron plate is attached to the lower surface of the upper mold 17, and vacuum suction holes 25 are distributed throughout the lower surface. A horizontally provided guide hole 26 is communicated with the outside of the upper mold. The guide hole 26 is connected to a water collection pipe (not shown) that is connected to a vacuum blower. The upper die 19 of the sub-press 18 is almost the same as the -L-type 17 of the main press 16, but the outer shape of the upper die is equal to the inner periphery of the lower die frame 4 and faces toward the lower die molding surface. The outer shape of the lower surface of the one-to-die 17 of the main press 16 is larger than the inner circumference of the formwork 4 and comes into contact with the upper end of the formwork 4.The sub-press 18 The upper mold 19 is also attached to the lower end of a piston rod 30 provided on a piston 29 that slides within a cylinder chamber 28 of a cylinder 27 attached to an appropriate location on the machine frame.

A molding material supply device 31 and a reinforcing net supply device 32 are juxtaposed at an intermediate position of the upper mold on the upper side of the horizontal reciprocating path of the lower mold 1. The molding material supply device 31 can be a screw type pump that supplies water, cement, and other appropriately mixed molding materials. The reinforcing net supply device 32 includes a roller or a set of rollers that conveys the continuous reinforcing net from the winding drum 33.
34, 35° 36 and a cutting device 37.

The manufacturing process of a reinforced cement mortar molded product according to a first embodiment of the present invention will be explained below with reference to FIGS. 1 to 7. In FIG. 1, the piston-cylinder device 8 is in its most retracted position, and the lower die is at the right end. The upper molds 17, 19 of both presses 16, 18 are in their upper end positions. Figure 2 shows the piston
The cylinder device 8 is actuated to move the moving table 7 to the left, and when an appropriate point is reached, the screw pump 31 is actuated, and a fixed amount of molding material 38 is applied to the lower mold being moved as part of the molding amount. After supplying the pump 31, the operation of the pump 31 is stopped, and the lower mold I
are stopped at aligned positions below the sub-press 18. At this time, the piston/cylinder device 8 may be at its most extended position. At this position, operate the sub-press 18 and press the upper die 19.
is lowered, and as shown in FIG. 3, a part of the molding material is compressed and water squeezed with a compression force lower than that of the final molding, thereby obtaining a flat upper surface of the molded semi-finished product. Next, the moving table 7 is returned to the left side by the operation of the piston/cylinder device 8, and the reinforcing net supply device 32 and the screw pump 31 are operated at a slightly forward and backward point to press the reinforcing net 39 and the remaining molding material 40 into the sub-press. 18, supplying the preformed material to the upper surface;
When the entire surface is supplied, each supply device is stopped (the cutting device 37 is operated in synchronization with the stoppage of the rollers), and the table 7 continues to move until it is aligned with the upper mold 17 provided on the main press 16. Stop the lower mold 1 at this position. During the return process of the lower mold 1, the upper mold I9 provided on the press 18 rises and returns to the upper end position. Next, as shown in FIG. 5, the main press 16 is operated toward the lower mold 1 to which all of the molding material has been supplied, and the upper mold 17 is lowered to perform compression molding operation, and the vacuum blower is activated. A water squeezing operation is performed to forcibly remove moisture from the material and complete the molding. When the molding is completed, the vacuum blower does not stop, and when the mold 4 is lowered and the upper mold 17 is raised, the molded product 41 is gripped by the upper mold 17 (see Fig. 6).
Next, when the moving table 7 is subjected to the forward movement, as shown in FIG. 6, the lower mold has already entered the molding process of FIG. 2 for the next molded product, and the upper mold 17 is in the molding process. A relative movement is performed to move the product 41 to the receiving plate II on the pedestal 9, and the horizontal movement is stopped at the position shown in FIG. When the vacuum suction of the -F mold 17 of the main press 16 is released at the position shown in FIG. 7, the molded product 41 is softly attached to the receiving plate 11. Also vice press 18
The piston 19 preforms a portion of the material, and the operation is repeated for the next molded product.

8 to 12 show a second embodiment of the present invention.

The lower mold 101 is a lower mold main body 103 supported on a support stand 102.
A formwork 104 is arranged vertically movably around the formwork 10.
A cylinder 106 accommodating a piston 105 attached to the lower end of the mold 4 is supported by a base 107 together with a support 102, and the lower mold body does not move. On the right side of the lower mold is a piston 11 that moves up and down in a cylinder 113 that is also positioned.
A pedestal 10 fixed to the upper end of a piston rod 115 provided in 4
9 is provided, and a receiving plate 111 is placed thereon.

The molding press 116 is an example of a type in which an upper mold 117 moves vertically and horizontally, and has a mechanical frame (not shown).
A support table 12 is attached to the lower end of a piston 122 that slides up and down inside the cylinder chamber 121 of a cylinder 120 attached to the
One end of a piston rod 127 of a piston 126 that slides inside a cylinder 125 provided at the right end of the support table 123 is an example of a support block 124 that is guided to slide horizontally on the support table 123. to be fixed. The second type 117 is fixed to the lower surface of the support block 124,
The piston 1 is horizontally reciprocated between a position aligned with the lower die 101 and a position aligned with the pedestal 109.
By the operation of 22, it is possible to move between the lower position where the molding operation is performed together with the lower die and the upper position where II) feeding is performed. Upper mold 11
A material supply device 128 is located on the left side of the upper mold 117 at a position where the lower mold 101 and the upper mold 117 are aligned, and consists of two hinged plates that support the material 129 so that it can fall. Further, a reinforcing net supply device 130 is arranged on the left side of the lower mold 101, and a conveying plate 135 is provided at the outer end of the piston rod 134 of the piston cylinder assembly w133 provided on the support plate 132 that supports the net 131. The net 131 can be horizontally conveyed to the upper surface of the lower mold by sliding on the upper surface. A projection 136 is provided on the upper surface of the lower mold body 103 so as to support the net upwardly at a distance from the molding surface. The upper mold 117 has a filter plate assembly 137 attached to the lower end thereof, which is made of a dewatering cloth, a wire mesh for supporting the dehydrating cloth, or a draining iron plate added thereto, and vacuum suction holes 138 are distributed throughout the lower surface, and the filter plate assembly 137 is formed horizontally. Extending guide hole or guide chamber 13
9 is communicated with the outside of the upper mold 17. The guide hole 139 is connected to a water collection pipe 140 that is connected to a vacuum blower (not shown).

The manufacturing process of a molded article according to a second embodiment of the present invention will be explained below with reference to FIGS. 8 to 12. In Fig. 8, the upper mold 117
The lower die 101 is aligned with the lower die 101, and the material supply device 128 holds the material. First, the material supply device 128 is moved to the right to a position aligned with the lower mold 101, and at the same time, as shown in FIG. It is supported by the protrusion 136 so as to be placed at the same position. Next, as shown in FIG. 10, the hinged plate of the material supply device 1 28 is opened and the material is dropped toward the lower die 101. The formwork 104 is a reinforcing net 13
Until F is supplied, it is held at the lowest position, that is, at a position where the upper end does not protrude from the upper surface of the lower mold, but after that supply,
Before starting to feed the material, move it to the upper position and hold it so that it does not go out of the lower molding space. Next, the upper mold 117 is moved to the left by the operation of the piston 126 and brought to a molding position aligned with the lower mold 101. Therefore, the upper mold 117 is
As shown in Figure 1, it is lowered and compression molded, and at the same time water is forcibly squeezed out to complete the molding. During compression, compression and water squeezing are similarly performed on the underside of the reinforcing net, resulting in a homogeneous molding, and the net is embedded in the molded product. It is also conceivable to use a special protrusion on the lower mold that is immersed in the lower mold during molding (see Japanese Patent Laid-Open No. 58-217311). After the molding is completed, the upper mold 117 is raised and then moved to the right side, and as shown in FIG.
The reinforcing net 131 is also placed on the lower mold 101, and the next molding operation in FIG. 9 has started.

FIGS. 13 and 14 show a third embodiment, and the apparatus is the same as the embodiment shown in FIGS. 8 to 12 except that the lower die is not provided with a protrusion 136, and the main parts of the process are as follows. is the first
As in the first embodiment shown in FIGS. 7 to 7, the material is fed in two stages, but instead of two presses, one press is used to form the material.

Fig. 13 shows a part of the material H being supplied to the lower mold, and Fig. 14 shows a part of the material being preformed and then a reinforcing net 131 being supplied to the upper surface thereof, and further material being supplied. The process and operation of final molding are described in Section irI! J to 12th
It will be clear if you refer to the figure.

The technical scope of the present invention is not limited to the following three embodiments, and other modifications can be made without departing from the scope of the claims. For example, instead of a reinforcing net, you can first supply a metal reinforcing plate with protrusions on one side to the lower mold, then supply the material to the bottom mold and compression mold it, then press mold a similar reinforced cement mortar molded product. It can be manufactured with high production rate. Protrusions may be provided on the metal reinforcing plate by welding protrusions or pins, or by stamping circular holes so that the edges protrude.
In addition, by stamping a chevron shape to make the pointed protrusion stand up, a reinforcing plate with multiple holes formed and distributed is created.
It forms one side of the molded product, and the protrusion is in the mortar molding material.
Also, the material is bitten into the hole and is held inseparably.

[Brief explanation of drawings]

1 to 7 are schematic cross-sectional views of one embodiment of the apparatus of the present invention for carrying out the method of the present invention, and are process diagrams of the method of the present invention. FIGS. 8 to 12 are views similar to FIGS. 1 to 7 in the second embodiment of the present invention. FIGS. 13 and 14 are schematic cross-sectional views of a third embodiment of the present invention, showing two states of deafness during the process. 1... Lower mold, 3... Lower mold body, 4... Formwork, 7.
...Movement table, 9...Base, 11...Base plate, 1
6... Main press, 17... Upper die, J8... Sub-press, 19... Upper die of sub-press, 3I... Material supply device, 32... Reinforcement net supply device, 33. ... Winding drum, 34. , 35, 36...roller or roller set, 37...cutting device.

Claims (11)

[Claims] (1) Before supplying all or the remainder of the cement mortar material to the mold, a reinforcing plate or a reinforcing net is arranged at intervals on or above the lower molding surface, and after the material is supplied, forced water is squeezed out. A method for manufacturing a reinforced cement mortar molded product, which is characterized in that it is press-formed while (2) Supply a part of the cement mortar material to the lower mold, form the first layer by water compression, then supply the net to the flattened top surface of the first layer, and then supply the remaining material. The manufacturing method according to claim 1, characterized in that the molding is performed by a final water squeezing compression. (3) The manufacturing method according to claim 2, characterized in that compression of the cement mortar material before and after supplying the net is performed using separate upper molds. (4) A support protrusion is provided on the upper surface of the lower mold, a net is supplied and placed on the protrusion, a cement mortar material is then supplied, and then pressure molding is carried out. The manufacturing method according to item 1. (5) The manufacturing method according to any one of claims 1 to 4, characterized in that the net is supplied from a winding drum to a mold via a conveyance roller. (6) The manufacturing method according to any one of claims 1 to 4, characterized in that the net is fed by pushing the net parallel to the molding surface of the lower die. (7) The manufacturing method according to any one of claims 1 to 4, wherein the net is supplied manually. (8) It has an upper mold installed at the lower end of the press that moves up and down, and a lower mold installed so as to be able to engage with it, and multiple suction holes are provided on the molding surface of the upper mold or the lower mold to compress the press at the same time as pressure forming. 1. An apparatus for producing cement mortar molded products that uses water, characterized in that it is provided with a device that supplies a reinforcing plate or a reinforcing net toward the molding surface of the lower mold. 9. The apparatus of claim 8, wherein the net feeding device includes a winding drum, at least one set of rollers, and a cutting device. (10) The apparatus according to claim 8, wherein the net feeding device is a pushing member arranged so as to be movable parallel to the molding surface of the lower mold. (11) The device according to claim 8, characterized in that a plurality of protrusions are arranged on the molding surface of the lower mold.