JPS58110207A - Manufacture of different size concrete product by same formwork and its molding device - 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 The present invention relates to a method for producing conocrete products of different dimensions using the same mold and an apparatus for producing the same.

Conventionally, the mold forming section of an instant demolding type molding apparatus has, in principle, the same dimensions as the product, with a concrete IJ-cont compression allowance added to the upper part. The sliding hopper, which serves as a basin for receiving the electrically cut concrete from the parent hopper, is advanced onto this formwork, and when it is pulled back after dropping the concrete, one edge of the sliding hopper rises upward from the upper edge of the formwork. Immediately remove the concrete.
3- Since it is taken and returned, the upper edge of the formwork is filled.

Vibrations and compression are applied to the concrete in the formwork to form it into the required dimensions.

Therefore, even for products with the same cross section but different thicknesses, molds suitable for each thickness were required.

Unlike pour-in type molding, the formwork of the instant demolding type molding equipment requires concrete injection, vibration, compression, and demolding 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 general-purpose products.

In order to make more effective use of the instant demolding equipment, which is relatively expensive equipment and does not occupy a small space, this invention uses molds for all products that have at least the same cross section but differ in thickness (or height). This allowed the legacy to continue without being replaced.

To summarize the manufacturing method of this invention, a hard kneading cast/injection mold is placed into a formwork with a depth corresponding to the thickest of the products having the same cross section and different thicknesses according to the dimensions of the target product. After applying vibration to the mold frame and pressurizing it with a press plate of the desired shape that enters the mold frame, This manufacturing method is characterized by demolding the molded concrete placed on a conveying pallet onto a formwork or onto a mold and transporting it.

Figures 1A and 1B are examples of two products with the same cross section but different thicknesses.

Conventionally, the product naturally required a separate mold, but according to the present invention, the same mold can be changed over for production at any time. Also the first
It is also possible to produce a composite product of different materials as shown in Figure C, and Figure 2 shows an apparatus according to an embodiment of the present invention. The key parts are a formwork in which a plurality of molded parts l corresponding to the thickest of the products M of each size having the same cross section and different thickness t are arranged side by side, and the bottom surface of this formwork is □ General pallet 3 that serves as a common bottom plate for the forming section l, a press device S having a press plate ψ located above the formwork and inserted into each forming section l, and a parent concrete with a metering and feeding device 6 on its side. Hopper 7 and each molding section/
A sliding hopper with a lower shutter 9 that reciprocates on one plane, in this case, on a sliding table /3, has a concrete receiving chamber at a position corresponding to etc.

The main hopper 7 is capable of metering and supplying hardened concrete to each receiving chamber of the sliding hopper IO in accordance with the desired product.

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

As mentioned above, this embodiment of the apparatus can be used not only for products such as those shown in FIG. 1A and B, but also for products M and M made of different materials as shown in FIG.
It is also possible to measure composite products that integrate ', and the thicknesses t and t' of each can be changed freely. That is, the parent hopper 7, the metering and feeding device 6, and the sliding hopper 1 of this embodiment.
0 are placed on both sides of the press S, and first the sliding hopper 10 on the right comes out onto the formwork unit and throws concrete. Then, the formwork A is vibrated by a vibrator//, and when the upper surface of the concrete becomes flat, it is further compacted with a press plate ψ, and then the left sliding hopper 10 is advanced onto the formwork A and mixed with different types of concrete. By dropping, shaking and pressurizing, the composite product 6- shown in Figure 1C is formed in the formwork a. The interface between products M and M' is 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 forming part l before the left sliding hopper 10 enters, so that adhesive is present between the two.

The different type of concrete may of course be mortar.

In this example, the metering and supplying device 6 employs a volumetric metering method, and a weighing cylinder 6α (the father is a rectangular cylinder) is made to be extendable and retractable using a nitrogen telescope. In this case, the lower side of the device should be
b to adjust the internal volume of the measuring cylinder 6α to the desired value. Then, when the shutter 6C on the upper side of the device is opened, the concrete in the parent hopper 7 fills the measuring cylinder 6a. Therefore, when the upper shutter 6C is closed and the lower shutter Ah is opened, a certain amount of concrete falls into each receiving chamber t of the sliding hopper IO.

Then, the pipette 6b is closed and the measuring cylinder 6a is again filled with concrete, while the sliding hopper 10 that has received the concrete is pushed onto the formwork by the fluid -7-pressure/2. that time,
The lower shutter 9 moves forward together, but the lower shutter 9 is opened on the formwork unit, and the concrete is dropped onto each molding section and then returned.

The concrete IJ-t that has fallen into the molding section is vibrated together with the mold by the vibrator l/, and sinks flat into the bottom of the molding section. In the case of nest products like those shown in Figure 1 A and B, the press board is always lowered to compress the concrete inside each molded part.
In the case of a composite product as shown in FIG. 1C, the compression of the press plate ψ may be omitted and the upper layer material may be immediately stacked.

Parent hopper 7 of the upper layer concrete (or mortar)
1 is the one on the left side of FIG. 1, and like the one on the right side, the concrete for the upper layer is dropped by the required amount into each receiving chamber t of the sliding hopper 10 via the metering and feeding device 6. Then, the sliding hopper 10 comes out onto the formwork a, and the lower shutter 9 is opened to drop the upper layer concrete onto the upper surface of the F layer concrete. When the fallen upper layer concrete is vibrated and the press plate ψ is lowered to compress it and the upper layer concrete is hardened, the same layer is placed in the same temple.
207 (3) Join to concrete.

While further lowering the press plate ψ that has entered each molding part l of the formwork unit, the pallet 3 that was serving as the bottom plate is removed from the mold and simultaneously placed on the unloading chain conveyor slag , and then transported to a nursery.

There are two methods for measuring the volume of the weighing and supplying device 6: one that measures volume as in the above embodiment, and one that measures one inhalation, and any known method may be used as appropriate. FIG. 4 shows an embodiment in which counting is performed by one digit. A screw conveyor 2 meter feeding device 6' is attached below the main hopper 7, and a totalizing meter 16 in front of the outlet, for example, a combination of a load cell, a speed meter, and a totalizing device, measures the concrete passing through. When the required maximum 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 with reference to a small number of embodiments, the main feature of this invention is that products with different thicknesses can be obtained by pouring measured concrete IJ into the same mold. The dispensing method can apply appropriately known technologies related to powder and granular materials, such as detecting that a certain volume has been reached during continuous supply in volumetric measurement, or detecting when concrete has filled a cylindrical tank to a certain height. Detection may be performed using a level switch, or a concrete detection switch may be added to one part of the receiving chamber to issue a confirmation signal, and the implementation of each component may be varied and applied depending on the designer's known technology. It is possible.

This invention overturns the conventional wisdom that only one type of mold is used for instant demolding of concrete IJ-type products. This is a departure from the conventional concept that the formwork itself doubles as a counting trough, and that all you need to do is fill the upper rim with concrete.
Introduced the concept of metered supply to concrete forming.

Conc IJ of arbitrary thickness by adjusting the metering supply device -
The technical and economical effects of this technology are significant, such as the ability to obtain composite products, the ease of making composite products, the elimination of the need to prepare molds of various thicknesses, and the elimination of the hassle of replacing molds.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of three examples of concrete products to which this invention applies, Fig. 2 is an explanatory diagram of an embodiment of the device of this invention, and Fig. 3
The figure is a top view of the formwork, and FIG. 4 is an explanation of the main parts of another embodiment. K...Formwork, 3...Pallet, S...Press device, 7...Main concrete hopper, lo...Sliding hopper.

Claims (2)

[Claims] (1) Hardened concrete is measured and supplied at a temperature corresponding to the dimensions of the target product into a formwork with a depth corresponding to the thickest product of each dimension with the same cross section and different thickness, and the formwork is vibrated. is added and pressurized by a press plate of the desired shape that enters the formwork, and then the molded concrete placed on the transport pallet that also served as the bottom plate of the formwork is demolded and transported onto the formwork or F. A method for manufacturing concrete products of different dimensions using the same formwork, which is characterized by: (2) A formwork in which a plurality of molding parts corresponding to the thickest of the products with the same cross section and different thicknesses are arranged side by side, and along the F side of this formwork, there is a conveying form that serves as a common bottom plate for each of the above molding parts. A pallet, a co-pressing device with a press plate located above the formwork that enters each of the above forming sections, a main concrete hopper with a feeder on the side thereof, and a press plate corresponding to each forming section of the formwork. The main hopper is equipped with a sliding hopper with an F-face that reciprocates on a horizontal plane that has a concrete receiving chamber located at the top of the main hopper and reaches the upper level of the formwork, and the main hopper transfers hard concrete to each receiving chamber of the sliding hopper. A molding device for concrete products of different dimensions using the same formwork, characterized in that concrete can be supplied precisely according to the intended product.