JPH06134740A - Instant demolding automatic forming machine of large-sized concrete product and forming method therewith - Google Patents

Abstract

PURPOSE:To provide a forming machine, with which respectively shaped large- sized civil engineering concrete product are formed by instant demolding system. CONSTITUTION:Vibrators are provided respectively to four-way side split molds 8, an upper surface press plate 16 and a lower surface boosting plate 3. At the same time, reinforcing steel plate is provided onto the rear surface of a large-sized surface pallet P. The surface pallet P, which is placed on the lower surface boosting plate 3, is lifted with lower cylinders 7 up to the primary lifted position. At the above-mentioned position, molds are assembled on the surface pallet P so as to charge material in the assembled mold. Then, the surface pallet P is lifted up to the secondary lifted position while being applied with vibration, resulting in uniformly and densely compacting the concrete by being pinched from above and below and vibrated.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding machine for molding large concrete products of various shapes for civil engineering by an instant demolding method and a molding method thereof.

2. Description of the Prior Art Conventional civil engineering concrete products are small molds whose shape and weight are easy to handle because they rely on humans for immediate demolding, or pouring concrete with a lot of slump into a mold to cure and demold after hardening. Was manufactured. Due to the shortage of manpower in recent years for workers who construct and construct such easy-to-use small concrete products, delays in the construction period cannot be avoided. The main reason for this is that the construction is dangerous, the work is tough, the work is dirty, and the so-called 3K adverse conditions cause the construction work to be further reduced.

In order to make up for this shortage of manpower, concrete products have been made larger and handled by mechanical force without relying on manpower. However, manufacturers of large products have traditionally used manpower. Large-sized products that cannot be handled are made by pouring soft concrete with a lot of slump into the formwork, and then applying heat for a long time to cure the concrete to harden the concrete and dismantle and remove the formwork manually. However, it requires a large number of molds, a wide working space is required for the storage of the molds, and the composition of the molds and demolding were manually performed. For this reason, the production was inefficient, and all of them were manufacturing methods that require much manual labor.

SUMMARY OF THE INVENTION The present invention is an automatic molding machine which eliminates these drawbacks of the prior art and molds a large concrete product with high efficiency by an instant demolding method to produce it. The work of (1) is constructed and constructed by heavy equipment, and a molding machine and a molding method for molding and manufacturing a large concrete product with high efficiency by an instant demolding method are provided.

[Operation] The molding machine for molding the large-sized concrete product of the present invention by the immediate demolding method is a large-sized concrete product of an arbitrary shape and the surface of the arbitrary shape for molding the exposed surface. A reinforcing steel material that withstands is welded to form an integrated surface pallet, and the surface pallet that moves up and down is placed on a vibration table on which the surface pallet is placed and raised to the primary rising position (Fig. 5).
(See), left, right, front, and rear separately moving side mold plates are respectively advanced to firmly fit and compose a specified integral mold, and the material box is advanced to the upper opening of this mold. When concrete material is supplied, the top surface of the supplied concrete is evenly cut by retreating the supply box to return to the original position under the hopper, and at the same time ascending and descending the press platen presses the concrete top surface and vibrates. At the same time, the surface pallet that has been temporarily stopped is pushed from below to the preset position where it is secondarily stopped while being vibrated from below.Uncompacted concrete in the formwork is clamped vertically and the whole is uniformly and densely densified. After hardening, the four-way split mold plate is moved backward to leave the surface pallet only, and the entire product is immediately removed from the mold, and when the vibrating table descends, a large size product with a surface pallet is pushed and transferred onto the chain conveyor and conveyed to the specified position. And cure.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view of a main part of a molding machine for molding a large concrete product by instant demolding, and the product shape is shown as an example of the embodiment. FIG. 2 is a cutaway side view of the main part. 3 shows the fitting mechanism at the corners of the split mold, FIG. 4 is a plan view of the assembled mold, and FIG. 5 is an enlarged view showing a molding state in which the surface pallet is raised to two stages and compacted. is there. And FIG. 6 has shown sectional drawing of various shapes of a large surface pallet. In the figure, (1) is a machine base of a molding machine for molding the large-sized concrete product of the present invention by an immediate demolding method, and (2), (2) ... Are front, rear, left and right split form board substrates ( 9 shows a mounting base of a cylinder (13) for operating 9). (3) is a vibrating surface pallet mounting table on which a surface pallet P for molding the exposed surface of a product is placed and is moved up and down, (4) is a vibrating surface pallet mounting table (3) with a vibration isolator (5) A base plate that moves up and down through the base plate. (6) is a vibrator. Reference numeral (7) is a cylinder for vertically moving up and down a surface pallet mounted vibrating base plate (3) and a vertically moving base plate (4), and the raising operation of this cylinder (7) operates in two stages as described later. Surface pallet
When it is installed in the bottom of the formwork, it temporarily stops and feeds the concrete material into the formwork.When this feeding is completed, the surface pallet is raised to the specified position, eliminating voids in the concrete and pressing from above. It can be compacted into dense concrete by sandwiching. This two-step ascending operation is performed electrically according to the amount of concrete mixed and the amount supplied. (8) is a substrate that horizontally moves a molding template of large-scale concrete products divided into four sides and has a different shape by replacing the molding template (9) attached to the inner surface in the shape of the product. Can be easily molded. Further, a fitting device (8-1) is provided at the corner of this divided substrate so as to be firmly integrated so as not to cause vertical deviation and lateral deviation when formed into a mold. (See FIG. 3) (9) is a four-sided split template for molding a large concrete product, which is detachably attached to the inner surface of the split substrate (8) which is moved by the operation of the cylinder (13). There is.
The shape of the mold (9) is the shape of a tension block in the embodiment figure, but this shape is an embodiment figure and the shape plate (9) can be replaced to mold products of various shapes. . Reference numeral (10) is a horizontal slide metal fixed to a substrate (8) that moves horizontally on four sides. (11) is the rail of this horizontal slide metal. (12) is a cylinder (1) for moving the moving substrate (8) forward and backward.
3) A frame for mounting, the lower part of which is fixed to the machine frame. In the figure, P is a surface pallet for forming a product exposed surface, and a reinforcing steel material H that is resistant to deformation due to the product weight is welded to the bottom because it is a large product. The inner surface of the surface pallet P can be formed into various shapes according to the exposed surface of the concrete block to be molded. (Fig. 6A
As described above, the surface pallet P is reinforced by the steel material H as described above, so that the uncured green concrete product is not cracked even when the product is immediately released from the mold. (15) is a material supply box that moves forward and backward over the formwork opening for supplying the concrete material into the formwork. (16) is a press platen for compressing and compacting the upper surface of the concrete material supplied to the integrally formed mold. (17) is a vibrator for compacting concrete by compression and vibration. (18) is a cylinder that moves the press board (16) up and down. (19) is a hopper for storing the concrete material, and a feeding box (15) for advancing and retracting for feeding to the form is provided below.
(20) is an operating cylinder of the supply box. (21) shows a chain conveyor that conveys the product B with the surface pallet that has been molded to a predetermined curing position, and (22)
Product B with surface pallet is transferred to the product conveyor chain (2
1) It is a product pushing cylinder that is pushed and transferred. Figure 3
FIG. 4 is an enlarged view of the fitting device provided at the four corners of the horizontal moving substrate (8) to which the molding die plate (9) is attached. Prevent lateral slippage. In this fitting device, a mountain-shaped fitting plate (8-1) having mountain-shaped fitting protrusions is fixed to the divided corners of the left and right moving substrates (8), and the left and right moving substrates are moved forward by the cylinder (13). ,
It is divided when the molding is completed after the molding is completed by firmly fitting the integrated frame into the chevron-shaped recesses of the fitting plate (8-2) provided at the dividing corners of the front and rear substrates that have advanced to the predetermined position first. The four sided template (9) is moved outward together with the substrate (8) and immediately released from the mold, leaving the block B placed on the surface pallet. Next, a molding method for compacting a concrete material for immediate molding of a large concrete product of the present invention will be described with reference to an enlarged cross-sectional view of FIG. 5. The diaphragm (3) descending by the operation of the cylinder (7). A surface pallet P (see FIG. 6) for molding a product exposed surface of an arbitrary shape is placed on the top and is internally mounted on the bottom of the mold frame that is integrally formed. Then, the cylinder (7) is actuated to ascend to the line a position for a temporary stop, and at the same time, the material box (1
5) is moved forward to feed the concrete material into the formwork, the feed box is retracted to its original position, and the press plate (1
Simultaneously with the operation of 6) pressing the concrete material surface fed by the lowering of the cylinder (18) and simultaneously activating the vibrator (17) to press and vibrate the concrete in the formwork from above by lowering the press board. At the same time when the vibrator (6) of the vibration base plate (3) on which the surface pallet is placed is started,
Cylinder (7) from the line position surface pallet to the position of line b
To raise. Therefore, concrete is compacted by vibration and pressure from below and above. That is, the material is supplied at the position of the line a, and it is raised to the position of the line b, and the concrete in the form is uniformly compacted by the clamping force from the opposite side of the pushing up from the bottom, the pushing from the top, and the vibration. . And when the molding is completed, the press board rises to its original position and the vibrator also stops,
The vibrator of the diaphragm on which the surface pallet is placed is also stopped.
Next, the four-sided side forming mold plate and the moving base plate to which the forming plate is attached are respectively retracted to leave the ready-mixed concrete product B on the surface pallet P and the others are immediately removed from the mold and simultaneously the cylinder is lowered. Then, the vibrating base plate descends to the unloading position along with the surface pallet. The pallet on the bottom of the descending vibrating base plate and the immediate removed concrete concrete product are conveyed to the prescribed curing position.The product is pushed onto the chain conveyor. The pusher cylinder is moved forward to transfer the concrete concrete product. Transfer to. The concrete material is fed by raising it to the primary position a line of the surface pallet and then pushing it up to the secondary position b line of the surface pallet. It is possible to uniformly compact the entire product by vibrating the material clamping pressure, and especially in compacting the side surface-shaped protrusions formed by the product, the effect is outstanding, and the concrete below the protrusion is pressed by the conventional pressing only from above. Although the compaction of the material was incomplete, in the present invention, the compaction is made by pushing up the concrete from the bottom and pressing it from the top. The concrete compaction effect that can be achieved has an epoch-making effect not seen in conventional compaction. FIG. 6 is a cross section of a surface pallet of each shape used for forming a product exposed surface of the large-sized product of the present invention by an instant demolding method. The embodiment shows that the product exposed surface has a shape not shown. However, the shape is not limited to the illustrated shape, but one example is A
The figure is a partial cross-sectional view of a surface pallet used to expose a flat surface with a smooth product surface. FIG. B is a partial cross-sectional view of a surface pallet used for smooth surface expression where the product surface is uneven. FIG. 6C is a partial cross-sectional view of a surface pallet used for surface-roughening a product surface. Fig. D is a partial cross-sectional view of the surface pallet used to expose the natural stone surface on the product exposed surface. Are shown respectively. The surface pallet shown in Fig. D is a surface pallet for surface formation with natural stones. Large, medium, small, natural stones mixed with a suitable amount of fine stones and fine sand used for the exposed surface are suitable for a box-shaped pallet with a height. Is supplied, and water is sprayed onto the stone material as appropriate to apply small vibration to the bottom of the gap between large, medium, small, and stone materials to fill the stone fine sand, and excess water is applied to the bottom surface of the pallet. It is a surface pallet that exposes a natural stone surface on the exposed surface of a large-sized concrete product by using a stone-filled surface pallet that has been drained from the formed pores and treated. W'is a drainage hole for excess water. W is a nozzle that sprays an appropriate amount of water. The surface pallet for molding the product exposed surface of each shape has a structure in which the reinforcing material H which is bent and does not deform due to the product weight is welded at the bottom to withstand the product weight due to the size increase of the product, and is immediately released from the mold. It has a strong surface pallet structure that does not damage the ready-mixed concrete products. Although not shown, grids of various materials such as plastic, sponge, or wire mesh are laid in the flat smooth surface of the surface pallet A, and large, medium, and small natural stones are appropriately placed on the top surface. There may be used a surface pallet in which a plurality of juxtaposed stones are filled with voids between the natural stones and granular sand having a joint portion having an appropriate depth is filled and an appropriate amount of water is sprayed to compact the granular sand. On the bottom surface of the surface pallet A, fine holes for draining surplus water of sprayed water are provided at appropriate places. Next, the molding operation of the automatic molding machine for molding the large-sized concrete product of the present invention by immediate demolding will be described step by step.
The surface pallet P of each shape is placed on the surface pallet mounting diaphragm (3) descending below the formwork position, and the cylinder (7) is lifted up to the primary rising position (see the enlarged view of FIG. 5). The mold plates (9) stopped at the line positions and stretched on the divided substrates (8) opened in four directions are horizontally advanced respectively to be firmly fitted and combined into an integral mold frame. (See Fig. 4) Next, the concrete material is received from the concrete storage hopper from the integrally formed mold upper opening, and the expected material supply box is advanced to the mold opening by the advance of the cylinder to remove the concrete material. It is dropped and supplied, and the feeding box is returned to the original position under the hopper by retreating the cylinder, and at the same time, the press plate (16) provided above the formwork is lowered to press the concrete material supplied to the formwork against the upper surface. At the same time, the vibrator (17) is started, and at the same time, the vibrator (6) fixed to the lower surface of the diaphragm (3) on which the surface pallet is placed is also started, and first stopped by feeding. Vibrating surface pallet stand (3)
Is raised to a predetermined position on the secondary rising position b line, and the concrete material is compacted and compacted by eliminating voids in the dense concrete by pinching vibration from below and vibration and pressing from above, and the compacting is completed. This concrete compaction material a
From the line, the compaction b line can be electrically changed very easily by the concrete slump, and can be easily changed in the concrete slump state to always form a product having a stable density strength. The movement of the substrate (8) in the four directions differs depending on the shape of the product. Cylinder (13) when this molding is completed
When the mold is retracted, the template (9) that is attached to the substrate (8) on the four sides in four directions moves horizontally outward, leaving the surface pallet P and immediately removed from the mold, the lower cylinder (7). The concrete product with surface pallet B on the vibrating base plate placed on the surface pallet is lowered to a predetermined position, transferred onto the chain (21) conveyed outside the machine, and sequentially transferred by the pushing cylinder (22). Every time the product is transferred, the product is transferred intermittently and transported to a prescribed curing place.

As described above, according to the present invention, when molding a large-sized concrete product, a product having a weight shape which cannot be manually handled, which has been regarded as impossible in the past, is efficiently produced and molded by an instant demolding method. In the machine, any surface pallet that forms the product exposed surface uses a surface pallet integrally formed with a reinforcing steel material that does not deform due to the product weight on the lower surface, and the formwork is moved forward with a split mold plate configured to move left and right front and rear Then, a device that firmly fits without vertical or horizontal displacement is installed at the corner of each split mold plate, and the surface pallet is placed on the vibrating surface pallet mounting table at the bottom of the mold frame that is integrally composed. At the bottom of the frame, the top surface of the concrete, which was internally supplied and pressed, was pressed down by the press platen, and the surface pallet that had been stopped by the presser was lifted at the same time as the vibration table was raised. Start up The concrete material in the formwork is uniformly compacted by the sandwiching vibration from below and above the surface of the formwork.The pallet stops at the specified position of the formwork, the upper and lower vibrators stop, and the press platen rises. Return to the position of, and the four-way split mold plates are opened to the outside to immediately remove the mold while leaving the surface pallet on the vibrating table as a pallet device. The raw product is pushed together with the surface pallet onto the chain conveyor. The surface pallet to be installed inside the bottom of the formwork is temporarily stopped and the concrete that has been supplied is secondarily raised at a predetermined position and pressed by the upper press platen to compact the concrete material by vertical clamping pressure and vibration, especially pushing up from below. Even if unevenness is formed on the side template due to pressure and vibration, there is no shadow of the pressure and vibration is also applied, so that the effect of firmly compacting to a uniform density is extremely large.

[Brief description of drawings]

FIG. 1 is a cutaway front view of a main part of a molding machine of the present invention.

FIG. 2 is a cutaway side view of the main part.

FIG. 3 is an enlarged view of the fitting device of the template that opens and closes in four directions according to the present invention.

FIG. 4 is a plan view of a formwork that opens and closes in four directions according to an embodiment of the present invention.

FIG. 5 is an explanatory view showing the compacting action of the present invention.

FIG. 6 is a cross-sectional view of a surface pallet of each shape for forming the exposed surface of an arbitrary large-sized concrete product by immediate demolding according to the present invention.

[Explanation of symbols]

 (1) ... Machine stand of molding machine (2) ... Mounting base for side frame substrate operating cylinder (3) ... Surface pallet mounting table (6) ... Surface pallet mounting table vibrator (7) ... Surface pallet mounting Mounting platform lift cylinder (8) ... Four side divided template board (9) ... Template to be attached to the board (13) ... Cylinder for moving horizontally moving board (16) ... Press board (17) ... On press board Vibrator (18): Cylinder for operating the press machine

Claims (2)

[Claims] 1. A four-way side-separating form, provided with a movable substrate that moves horizontally by actuation of a cylinder from four directions, a fitting device provided at a corner of the movable substrate, and an inner surface of the movable substrate. Forming the four side surfaces of the form by attaching and detaching the form plate to and from the base, inserting a surface pallet reinforced by reinforcing steel into the bottom of the form, and providing a pressing plate and a vibrator on the upper and lower surfaces. Immediate demolding automatic molding machine for characteristic large concrete products. 2. The surface pallet on the vibrating plate rising from the bottom of the bottom of the mold frame composed according to claim 1 by the cylinder is temporarily stopped at the position a to feed concrete from above, and the press plate above. And press the upper surface of the supplied concrete, and at the same time push the surface pallet, which is temporarily stopped, to the specified position b of the secondary stop to vibrate the upper and lower press boards and surface pallets to vibrate the concrete vertically. And an instant demolding automatic molding method for large concrete products, characterized by compacting to a uniform density by clamping pressure.