JPH0434001Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a forming device for forming concrete products of different thicknesses using the same formwork.

Conventionally, the formwork forming part of an instant demolding type molding device has, in principle, the same dimensions as the product, with a concrete compression allowance added to the upper part. The sliding potspa, which acts as a basin for receiving the quantitative concrete from the parent pots, is advanced onto this formwork, and when it is pulled back after dropping the concrete, the lower edge of the sliding potspa rises up from the upper edge of the formwork. The mold is scooped up and returned to fill the upper edge of the form. The concrete in the formwork is shaken and compressed to form it into the required dimensions.

Therefore, even products with the same cross-sectional shape but differing only in thickness required formworks appropriate for each thickness.

Unlike pour-in type formwork, the formwork of the instant demolding device requires concrete to be poured, shaken, compressed, and demolded on the spot, so there are many related parts, making it troublesome to replace. However, in the past, the above-mentioned problems were thought to be unavoidable due to the mass production of one type of product in one facility.

In order to make more effective use of the instant demolding equipment, which is relatively expensive equipment and does not occupy a small amount of space, this idea allows all products with at least the same cross-sectional shape but differing only in thickness (or height) to be molded. This made it possible to continue mass production without changing the frame.
As a forming device for concrete products, we use a formwork in which multiple molding sections with the same cross-sectional shape and different thicknesses are arranged in parallel at the top and bottom of each dimension, corresponding to the thickest product, and the bottom surface of this formwork. a conveying pallet that is firmly supported by the molding section and serves as a common bottom plate for each of the molding sections, and a pressing device that has a press plate that is located above the mold and has a cross-sectional shape similar to the cross-sectional shape of the molding section that is fitted into each of the molding sections. , on the side thereof, there is a parent concrete hopper with a metering and feeding device on the lower side, and a concrete receiving chamber at a position corresponding to each forming part of the formwork, and a concrete receiving chamber is provided at a position corresponding to each forming part of the formwork from below the parent concrete hopper. Equipped with a sliding pot with a bottom shutter that reciprocates on a horizontal plane reaching the upper edge, the parent pot can meter and supply hardened concrete to each receiving chamber of the sliding pot in an amount corresponding to the desired product. The above shutter is characterized in that it opens only when the sliding popper is stopped on the formwork.

The illustrated embodiment will be described below.

Figures 1A and 1B are examples of two products with the same cross-sectional shape but different thicknesses. Conventionally, products had to be molded using separate molds, but with the molding device of this invention, production can be performed by changing the molds at any time. It is also possible to produce a composite product of different materials as shown in FIG. 1C, and FIG. 2 shows an embodiment of the device of this invention. The main parts are a formwork 2 in which a plurality of molding parts 1 are arranged side by side, each having the same cross-sectional shape as described above and having an inner wall open vertically corresponding to the thickest product M of each dimension having different thicknesses t. A conveying pallet 3 that is applied to the lower surface of the mold 2 and serves as a common bottom plate for each molding section 1; a press device 5 having a press plate 4 that is located above the mold 2 and can be fitted into each molding section 1; It has a master hopper 7 for hardened concrete on the side, a metering and feeding device 6 attached below it, and a concrete receiving chamber 8 at a position corresponding to each forming section 1 of the formwork, and the mold is fed from below the metering and feeding device 6. This includes a sliding hopper 10 with a lower shutter 9 that reciprocates on a horizontal surface reaching the upper edge of the frame 2, in this case a sliding table 15.

The parent hopper 7 is capable of metering and supplying hardened concrete to each receiving chamber 8 of the sliding hopper 10 in an amount corresponding to the intended product.

FIG. 3 is a plan view of the mold 2, in which four molding parts 1 are arranged side by side.

The apparatus of this embodiment is shown in FIGS. 1A and 1B as described above.
It is possible to mass-produce not only products such as the one shown in FIG. That is, in this embodiment, the parent hopper 7, the metering and feeding device 6, and the sliding hopper 10 are respectively arranged on both sides of the press device 5, and the sliding hopper 10 on the right side first comes out onto the formwork 2 and pours concrete. do. Therefore, the formwork 2 is vibrated by the vibrator 11,
When the top surface of the concrete becomes flat, or after it has been further rolled down by the press plate 4, the left sliding hopper 10 is advanced onto the formwork 2 to drop the different types of concrete, and the concrete is shaken.
When pressurized, the composite product shown in FIG. 1C is formed within the formwork 2, and the boundary surfaces of the products M and M' are joined together by vibration and compression. However, for materials with particularly poor bonding properties, it is possible to easily add equipment for injecting adhesive into each molding part 1 before the left sliding hopper 10 enters, so that the adhesive is interposed between the two. The different type of concrete may of course be mortar.

In this embodiment, the metering and supplying device 6 employs a volumetric metering method, and a metering cylinder (or rectangular cylinder) 6a is telescopically inserted and withdrawn to be extendable and retractable. In this case, the lower side of the device is moved up and down together with the lower shirt shutter 6b to adjust the internal volume of the measuring cylinder 6a to the required amount. Then, when the upper shutter 6c of the device is opened, the concrete in the parent hopper 7 fills the measuring cylinder 6a.
Then, when the upper shutter 6c is closed and the lower shutter 6b is opened, a certain amount of concrete falls into each receiving chamber 8 of the sliding hopper 10.

Therefore, the shutter 6b is closed and the measuring cylinder 6 is again
Meanwhile, the sliding hopper 10 that has received a certain amount of concrete is pushed onto the formwork 2 by the hydraulic cylinder 12. At this time, the lower shutter 9 also moves forward, but the lower shutter 9 is opened on the formwork 2 and the concrete is dropped into each molding section 1 before returning.

The concrete that has fallen into the forming section 1 is vibrated together with the formwork by a vibrator 11 and sinks flatly to the bottom of the forming section. In the case of a single product as shown in Fig. 1A and B, the press plate 4 is always lowered to compress the concrete in each forming part 1, but in the case of a composite product as shown in Fig. 1C, the press plate 4 is compressed. The compression step 4 may be omitted and the upper layer material may be immediately layered.

The parent hopper 7 for concrete (or mortar) for the upper layer material is the one on the left side of Fig. 2, and like the one on the right side, the required amount of concrete for the upper layer is sent to each receiving chamber 8 of the sliding hopper 10 via the metering and feeding device 6. drop. Then, the sliding hopper 10 comes out onto the formwork 2,
Open the lower shutter 9 and drop the upper layer of concrete onto the lower layer of concrete. Vibration is applied to the fallen upper layer concrete, and the press plate 4 is lowered to compress it, hardening the upper layer concrete and simultaneously bonding it to the lower layer concrete.

While further lowering the press plate 4 that is fitted into each molding part 1 of the formwork 2, the pallet 3, which was used as a bottom plate, is removed from the mold by a well-known elevating and removing device 13, and placed on the conveyor chain conveyor 14 for curing. Carry it out to the field.

There are two methods for measuring concrete in the metering and feeding device 6: volumetric measurement as in the above embodiment, and weight measurement, and any known method may be used as appropriate. FIG. 4 shows an embodiment for measuring by weight. A screw conveyor type metering and feeding device 6' is attached below the parent hopper 7, and a totalizing meter 16, for example, a combination of a load cell, a speed meter, and a totalizing device, is placed in front of the outlet of the screw conveyor type metering and feeding device 6', which measures the passing concrete to the required amount. When the amount is reached, the entire amount is dropped to the exit and the supply is stopped. Alternatively, a weighing device commonly used on a belt conveyor for transporting powder or granular materials may be used.

As explained above using a small number of embodiments, this invention measures and supplies hard mixed concrete from a parent hopper to each receiving chamber of a sliding hopper whose bottom surface is closed with a shutter, and the sliding hopper The concrete is then moved onto the formwork, and when it stops on the formwork, the shutter is opened and concrete is accurately poured into each forming part of the formwork, making it possible to obtain products with different thicknesses. The measuring method can apply the known technology related to powder and granule weighing as appropriate. For example, in volumetric measurement, it is possible to detect when a certain volume has been reached during continuous feeding, or to measure concrete up to a certain height in a cylindrical measuring layer. It is easy to think of ways to detect this with a level switch, or to add a concrete detection switch to the weighing section, receiving chamber, etc. to issue a confirmation signal. The number of forming parts of the formwork can reach ten or more if there are many. Concrete can be made with porous materials, resin materials, etc. In addition, if the product with the maximum thickness is a composite product as shown in Figure 1 C, only the lower layer materials are metered and supplied, and after being submerged and smoothed by vibration,
The top layer may be fed over the mold by a conventional sliding hopper, resulting in metering.

This idea overturns the conventional wisdom that only one type and one mold was used for instant demolding of concrete products. Traditionally, the formwork itself also served as a measuring well.
Breaking away from the fixed concept that all you need to do is fill the top edge with concrete, we introduced the concept of metered supply into concrete forming.

Concrete products of any thickness can be obtained by adjusting the metering and feeding device, and multi-layer composite products with each layer of any thickness can be easily made, and the conventional preparation of formwork for each thickness is no longer necessary, making it easier to replace formwork. The technical and economic effects of eliminating this hassle are significant.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of three examples of concrete products targeted by this invention, Fig. 2 is an explanatory diagram of an apparatus of one embodiment of this invention, Fig. 3 is a top view of the formwork, and Fig. 4
The figure is an explanatory diagram of main parts of another embodiment. 1... Molding section, 2... Formwork, 3... Pallet,
5...Press device, 7...Main concrete hopper, 9...Shutter, 10...Sliding hopper.

Claims (1)

[Scope of Claim for Utility Model Registration] A formwork in which a plurality of molding parts with the same cross-sectional shape but open at the top and bottom of the depth corresponding to the thickest product of different thicknesses are arranged side by side; A press having a conveying pallet that is firmly supported on the lower surface and serves as a common bottom plate for each of the above-mentioned forming sections, and a press plate that is located above the formwork and has a cross-sectional shape similar to the forming section that fits into each of the above-mentioned forming sections. The device has a main concrete hopper on its side with a metering and feeding device on the lower side, and a concrete receiving chamber at a position corresponding to each forming part of the formwork, and the formwork is placed from below the parent hopper. Equipped with a sliding pot with a bottom shutter that reciprocates on a horizontal surface reaching the upper edge, the parent pot measures and supplies hardened concrete to each receiving chamber of the sliding pot in an amount corresponding to the desired product. A forming device for forming concrete products of different thicknesses using the same formwork, characterized in that the shutter opens only when the sliding pots are stopped on the formwork.