JPS6021205A - Instantaneous mold-release molding method and molding equipment for concrete product - 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 an instant demolding method and a molding device for concrete products, and has developed a true instant demolding method that allows the entire surface of a concrete IJ-molded product to be released from the template immediately after molding. It is something.

Conventionally, the instant demolding method used as a mass production method involves filling a formwork with concrete, placing a flat pallet on the open surface of the mold, applying vibration and pressure, then inverting 180 degrees, and placing the concrete molded body on the flat pallet. Drop it downward, carry it to curing water, and after curing, remove it from the surface pallet. A surface pallet is a type of template that matches the shape of the product, and is used in large quantities.

There are four methods: Insert the pallet that will become the bottom plate into the bottom shell formwork, and after pouring concrete, shaking, and pressurizing, the pallet and the concrete are pushed upwards and transported to the curing bath.

In both cases, demolding was done by attaching a surface pallet, which is a template, to one side of the concrete molded body, so it was difficult to completely demold the mold immediately.

As mentioned above, this invention is based on the idea of instant demolding in a true warehouse (1), and it has been implemented as a mass production method, eliminating the need for the conventional large number of surface pallets that match the shape of the product. Therefore, the work of inserting the surface pallets into the formwork and the work of peeling the surface pallets after curing can be eliminated. Next, the configuration and embodiments of the present invention will be described with reference to the drawings.

Fig. 1 shows an apparatus according to an embodiment of the present invention, Figs. 2 to 4 show the formwork thereof, and Fig. 5.6 shows the state in which the formwork is turned sideways and concrete is extruded. Figures 7 to 9 show the concrete product of this example, and Figure 10 shows a revetment wall connecting the products.

B is the concrete product and W is the water surface.

Concrete product B is a flat cube with two connecting holes through it and a trapezoidal protrusion on the top, making it a cumbersome shape. This is completely demolded immediately and placed on a flat pallet for transportation. To do this, the formwork must first be suitable for the method of this invention. The method of this invention involves pouring concrete into the formwork with the open side facing up, shaking it,
After applying pressure, the formwork is turned 90 degrees so that the open side faces sideways, and the packed concrete is extruded to the bottom plate, or the bottom plate and the core, by sliding onto a flat pallet under the force of the formwork. It is characterized by being pulled back into the frame.

Therefore, the formwork 10 shown in Figs. 1 to 5 is attached to a 90° turning device that changes the direction of the open surface 10α from above to the side, in this case, a turning device consisting of a chain wheel 1, a chain wheel 13, and a hydraulic cylinder/l. ing. It has a formwork bottom plate /l which can slide on the inner surface of the side plate of the formwork 10 and push out the internal concrete (C) from the formwork IO.

A hook-shaped retaining member IA is attached to the outer surface of the bottom plate l/. This is because when the hood frame 10 is turned and turned sideways, the drive end 15α of the hydraulic cylinder /&, which is the bottom plate pull-out mechanism, comes into engagement with the engaging member /6.

Since the mold 10 is used to mold the products shown in FIGS. 7 to 9, the side plates are shaped to match the cross-sectional shape of the product B, which includes planar projections as shown in FIG. The part without protrusions is a partition plate attached to the bottom plate/l side that blocks the concrete from entering. The core rods for the product No. 85 are not attached to the bottom plate/l, but instead are fixed to the outside of the formwork base 10b so as to stand side by side toward the open surface ioα. The core rod passes through the through hole in the bottom plate.

In order to form concrete 17-) C into the shape of product B, as shown in Figure 2, it is necessary to attach a pressure template 3α that is compatible with the press 3 in Figure 1 and form the upper surface of the concrete. Must be. The vibration mechanism for applying vibration to the formwork 10 is well known and is not shown in the figure.

In the embodiment shown in FIG. 1, as is well known, a fixed amount of concrete is dropped from a stationary hopper 5 to a movable hopper 3, and the concrete is stopped by a hydraulic cylinder and transferred onto the open surface 10α of the formwork and charged.
Vibration is applied and pressure is applied by the press 5 to form concrete C as shown in FIG. From step 9, turn the formwork 10 by 90 degrees using the upper and lower fluid pressure cylinders /+, chain wheel /1, and turn the open surface 10α sideways as shown in FIG. 5.6. When the formwork 10 turns and falls sideways, the retaining member /6 on the outer surface of the bottom plate also rotates and engages with the pressurizing end /Sα of the fluid pressure cylinder /S of the bottom plate drive mechanism. .

Fluid pressure cylinder/! When the internal concrete C is pushed out from the formwork IO by operating the mold, the state shown in Fig. 6 is obtained. At the position where the concrete formed body C extruded laterally from the formwork 10 slides and rests, there is a normal flat pallet for transportation prepared in advance).
Pallets that hold P) Support [1, In this case, there are chain conveyor/g, receiving material/9, regulation plate, 20, etc. Chain conveyor/g is pallet) P is sent in and sent out, receiving material/9 is pallet) Determine the height of P, concrete molded body C
The regulating plate -0, which withstands the impulse load when placed on the pallet P, prevents the pallet P from shifting laterally due to friction during sliding of the concrete molded body C.

Now, the bottom plate // must be returned to the formwork 10 again,
If you simply pull it back, some of the concrete may stick and the product may chip. Therefore, in this embodiment, an impulse or swing is applied to loosen the adhesion before the bottom plate/l is pulled back. As shown in Figure 6, the extruded bottom plate l/
Impactors facing both the left and right sides of the machine are installed, and the bottom plate is alternately struck once at a time by air pressure. This sufficiently loosens the adhesion of the concrete, so the bottom plate // is pulled back into the formwork lO by the hydraulic cylinder /3. Since the periphery of the open surface 10α of the formwork is open to easily accept the pressing template Sα of the press, the bottom plate l/ may be pushed out until it completely escapes from the formwork IO, but in this embodiment, the rear part of the bottom plate // remains within the formwork/θ. Even in this state, the entire bottom plate ii can be swung by pushing the edge of the bottom plate //. To loosen the adhesion between the bottom plate//, partition plate//a and concrete C, there are two methods: applying impulses, including vibration, and shaking relatively quietly to loosen the adhesion from one side. Either is fine.

When returning the bottom plate l/ to the formwork 10, it is better to widen the hole edge so that the tip of the core rod /7 can fit into the hole in the bottom plate //, but it is better to make the core rod /7 longer. It is also a good idea to prevent the bottom plate l/ from coming out even when it is pushed all the way. Alternatively, the core rod /7 may be fixed to the movable bottom plate //, extruded together from the formwork 10, and then returned together with the bottom plate //.
This has the disadvantage of strengthening the adhesion between the concrete molded body C and the bottom plate //.

The inner wall of the formwork IQ does not have a draft angle like the conventional formwork for inversion demolding. It may be slightly reversed. When the concrete molded body C is extruded together with the bottom plate //, the concrete surface is friction-finished, and especially the bottom surface, surface b in Figure 7.9, is finished with a clean surface. Therefore, formwork designers should design a formwork that can extrude the concrete molded body together with the bottom plate according to the shape of the product, and should take care to ensure that the surface of the product for which the appearance is desired is on the bottom side during extrusion.

The device that loosens the adhesion between the extruded concrete molded body C and the bottom plate// provides impulses and vibrations as described above, and
A well-known compressed air introduction method may also be used. Fig. 11 shows an example in which the bottom plate /l shown in Fig. 6 has been modified in this way, and is a device that blows out compressed air for concrete peeling from the blowhole 21 on the concrete adhesion surface of the bottom plate //' from which the concrete compact C has been extruded. In this example, an air hose 22 and an air reservoir chamber 3 are attached.

Also, in the gap between the ivy formwork io and the flat pallet P, the concrete formed body C is extruded and moves sideways.
A device 23 for applying surface treatment to the lower surface can also be provided as shown in FIG. As shown in the figure, the processing device 2S is used for processing such as making grooves and patterns on a moving concrete surface by attaching an adjustable tool a6 such as a tool for metal processing, or locally smoothing it by attaching a finishing roller. For example, it is possible to perform a surface treatment such as attaching a perforated fountain pipe to wash away the cement on the concrete surface and expose the aggregate. Concrete debris and washing water will fall downward, so it's a good idea to dispose of them.

As explained above with reference to one embodiment, the present invention uses a simple formwork for instant demolding without opening/closing parts, and when demolding, the open side is turned sideways, and the concrete molded body is placed on a flat pallet outside the formwork using a bottom plate. The main feature of this product is that it was the first to achieve complete demolding by extruding it in a sliding manner.
During implementation, changes and applications can be made as appropriate based on the well-known techniques of the engineers in charge without changing the gist.

This invention is based on the conventional t＼
This paved the way to converting the incomplete instant demolding method into a complete demolding method.

Concrete is poured with the open side up, vibrated, and pressurized, turned sideways, and the concrete molded body is extruded along with the bottom plate from the open side, so a conventional simple formwork can be used. Since it is extruded in the lateral direction, the concrete molded body can be immediately slid from the formwork onto a flat pallet for transportation, which often causes damage to soft concrete during delivery.

The skin on the sliding surface of the product is clean.

Then, by applying impulse, rocking, or air pressure to loosen the adhesion of concrete to the bottom plate, core, partition plate, etc. that are in close contact with the skin of the extruded concrete, and then pulling it back, damage to the product due to peeling is avoided. do not have. ζThus, true instant demolding became possible. Furthermore, the surface treatment of the underside of the still soft concrete molded body during lateral extrusion has opened up a new method that accomplishes forming and surface treatment all at once.

This EAK eliminates the need for large quantities of surface pallets, which were previously required in the past, and eliminates the need for surface pallet operation during molding, peeling of surface pallets after curing, and cleaning, which greatly improves productivity. .

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of one embodiment of this invention, Fig. 2 is an elevational sectional view of the formwork, Fig. 5 is a side sectional view thereof, Fig. 4 is a plan view thereof, and Fig. 5.6 is the same. Elevation and plan views of the extruded concrete concrete product; Figs. 7 to 9 are elevation, plan and side views of the concrete product; Fig. 10 is an explanatory diagram of the usage of the product; Fig. 11 is the fumarole An explanatory view of the bottom plate with holes, and FIG. 12 is a longitudinal sectional view of an embodiment with a concrete surface processing device. /θ... Formwork, /l... Bottom plate, /11... Bottom plate drive mechanism, /6... Holding member, 1g... Chain conveyor, 19... Receiving material, 20... -Regulation plate, edge...actuating device (impactor), -gu...blowhole, 23...surface processing device. Patent Applicant Chiyoda Giken Kogyo Co., Ltd. Agent Patent Attorney Fuku 1) Nobu Yukiyuki Agent Patent Attorney Fuku 1) Take Michiyo Attorney Patent Attorney Fuku 1) Ken Mitsu Figure 2 Figure 5 0 Figure 3 Figure 6

Claims (4)

[Claims] (1) After pouring concrete into the formwork with the open side up, vibrating, and pressurizing it, turn the formwork 90 degrees so that the open side faces sideways, and pour the filled concrete into the bottom plate, or the bottom plate, and the core. This is an instant demolding method for concrete products, which is characterized by extruding it from the formwork onto a flat pallet and then pulling it back into the formwork. (2) In immediate demolding concrete forming equipment, the formwork is attached to a 90° turning device that changes the direction of the open surface from above to the side, and the internal concrete can be pushed out of the formwork by sliding on the inner surface of this formwork side plate. It has a formwork bottom plate, a retaining member protruding from the outer surface of the bottom plate, and a pressure end that engages with the retaining member when the formwork turns and turns sideways, pushing the bottom plate and removing the concrete from the formwork. An instant demolding device for concrete products, comprising: a bottom plate drive mechanism for extrusion; and a pallet support mechanism for holding a flat pallet at a position on which a concrete molded body extruded laterally from a formwork slides and rests. . (3) In immediate demolding concrete forming equipment, the formwork is attached to a 90° turning device that changes the direction of the open surface from above to the side, and the internal concrete can be pushed out of the formwork by sliding on the inner surface of this formwork side plate. It has a formwork bottom plate, a retaining member protruding from the outer surface of the bottom plate, and a pressure end that engages with the engaging member when the formwork turns and turns sideways, pushing the bottom plate and removing the concrete from the formwork. A bottom plate drive mechanism that extrudes the pallet, a pallet support mechanism that holds the flat pallet in a position on which the concrete molded body extruded laterally from the formwork slides in, and a mechanism that controls the adhesion of the concrete and the bottom plate that extruded the concrete molded body. and a loosening device. Immediate demolding equipment for concrete products. (4) In instant demolding type concrete forming equipment, the formwork is attached to a 900-turn device that changes the direction of the open surface from above to the side, and the internal concrete is pushed out of the formwork by sliding on one side of this formwork side plate. A formwork bottom plate to be obtained, a retaining member protruding from the outer surface of this bottom plate, and a pressurizing end that engages with the engaging member when the formwork turns and turns sideways, and presses the bottom plate to release the concrete into the formwork. A bottom plate drive mechanism that extrudes the concrete from the formwork, a pallet support mechanism that holds the flat pallet in a position on which the concrete molded body extruded laterally from the formwork slides, and a support mechanism that holds the flat pallet in a position where the formwork and the flat pallet are placed sideways. 1. An instant demolding and molding device for concrete products, characterized in that it is equipped with an extrusion force and a device for applying surface treatment to the lower surface of a moving concrete molded body in a gap.