JPS6398402A - Curing preparation method of concrete product and device thereof - Google Patents

Abstract

(57) [Abstract] 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 curing preparation method for concrete products and an apparatus therefor, in which comparatively small products are stacked in several tiers and sent to a curing field.

(Prior art) For example, small and thin concrete blocks such as paving stone blocks for pavements.
1~Products are generally made using instant demolding molding equipment and delivered on pallets. There are two ways to put them in a curing field: one method is to put them in each tier of racks (shelves), and the other is to directly stack them in several tiers and cure them without using racks. 1. The present applicant proposed an invention belonging to the latter q in JP-A-61-1.11229.

(Problems to be Solved by the Invention) In the previous proposal described in L, uncured products are directly stacked in multiple stages via pallets 1 to 1, so the lower products are easily deformed and damaged, and the upper pallets, which are made of steel plates, are susceptible to rust. There is a drawback that it may stain the product.

(Means for Solving the Problem) The curing preparation method for concrete products according to the present invention is such that the concrete products that come out of the forming device on flat pallets one after another are stopped at a stop position, and the pallets at the stop position are Above, on the outside of the product, a surrounding frame is placed to support the same-shaped pallets at a height that does not touch the products, and the pallets in this state are stacked one after another on the stacking area of the "feeding mechanism to the curing area" until an appropriate number of tiers are stacked. When the products are stacked, they are sent to a curing field by the above-mentioned feeding mechanism, and when they come out of the curing field, - the above-mentioned surrounding frames are collected sequentially from the upper pallet, and only the products with pallets are sent to the desired position. .

Further, the curing preparation device for concrete products of the present invention has a peripheral wall that surrounds the product on a pallet and supports the same-shaped pallet at a height that does not touch the product, and a supporting plate that protrudes laterally on both outer surfaces of the opposite wall. A plurality of enclosing frames, a stopping position for the products coming out from the molding device on a pallet, a support position for the above-mentioned enclosing frames directly above them, and a stacking area adjacent to these are arranged in front and back and surround them. A cubic machine frame, four endless chains circulating in a rectangular shape, and a pair of beams on the left and right are attached to the left and right vertical surfaces of the front and rear of the machine frame, and the front and rear ends are connected to the left and right endless chains. The opposing bundles that perform vertical rectangular circulation in a horizontal position by synchronized circulation of each chain,
It is equipped with two or more pairs of pallet holders that protrude inward from the opposing bundles and are pivotally supported so that when flipped up, they escape to one side.
The pallet is scooped up from the above-mentioned stopping position by one round movement of the two opposing beams, the enclosure directly above is also scooped up, and the pallet is unloaded onto the stacking area.

(Function) This invention provides a method for stacking small products in several tiers for curing,
As a device, we provide a third method different from the conventional rack-using method and direct stacking method. Do not use racks or place heavy pressure on uncured product as if it were racked.

That is, in the method of the present invention, a spacing member, which is the simplest and easiest to handle, is placed on a pallet loaded with products, which is a surrounding frame that is slightly higher than the thickness of the products. As a result, the products are placed on pallets that also serve as shelves, and are surrounded by a frame that replaces the shelf pillars. If you stack these one after another, it will be the same as putting products on a shelf with the same number of turns.

The enclosure works in the same way as a curing rack that can be disassembled and reassembled.

Furthermore, the apparatus of the present invention embodies the above-mentioned method of the invention in the simplest and most effective manner.

In other words, the stopping position of the product coming out of the molding equipment, the supporting position of the enclosing frame at its true position, and the machine frame that surrounds the stacking area adjacent to these in front and back, and the four endless chains attached to this frame. Due to synchronous circulation, the opposing bundles with pallet holders move in a vertical rectangular circulation motion, and at the above-mentioned stop position, by upward movement, both sides of the pallet carrying the product are hooked on the holders, and further rise to support the enclosing frame. At this point, scoop the pallet itself into a frame supported by the edges of the support plates on both sides.

Then, the opposing bundle moves sideways to the top of the stacking area, descends, stacks the pallets on the preceding pallet, and then loads the receiver onto the barre 1 to prevent it from being thrown off by the preceding pallet or its support plate. After descending from the position to the lowest position, it moves laterally to the lowest position and repeats the above-mentioned operation.

(Embodiment) FIG. 1 shows a front view of an embodiment of the device of the present invention, FIG. 2 shows a plane thereof, and FIG. 3 shows a right side view of FIG. 1.

The concrete product M is then a paving stone block, which is conveyed on a flat pallet P from the forming device on the right in FIG. 1 by means of a roller conveyor. This is the end of the conveyor 1 or the stopping position A of the products and pallets. Immediately above it is the enclosing frame support position B, and adjacent to these is the stacking area C. A cubic machine frame 10 surrounding these frames surrounds the upper and lower spaces of the front stop position A and the surrounding frame support position B, and the rear part surrounds the upper and lower spaces of the stacking area C. Endless chains 1 on the planning side are installed in the machine frame 10 so as to circulate in the direction of the arrow, one on each of the left and right vertical planes at the front and rear sides (first and second chains).
(see figure).

□ Each chain 11 is hung on a chain wheel 11a attached to the machine frame 10 as shown in FIG. . When each chain 11 circulates synchronously, the opposing beam 12 remains in a horizontal position, but as shown by the thick arrow in Figure 1, the front part of the machine frame 10 (on the right side of the figure) rises northward, and the upper end moves laterally to the rear. death,
Descend at the rear, move laterally from the bottom to the front. Each chain 11
are circulated by a common synchronous drive 15.

The opposing beam 12 is provided with two pairs of pallet holders 13 that protrude inward. As shown by the chain line 13' in FIG. 5, this receiver 13 is pivotally supported by the beam 1Z so that when descending, if there is an obstacle below, it will turn upward and escape. Of course, even if it is pushed from ``-'', it will not turn because it is stopped by the stopper. This receiver 13
is the same as that shown as ketch 18 in FIG. 6.7 of the previous proposal.

Now, the surrounding frame 16, which is the most important member of this invention, is
In the embodiment shown in Figs. 1 to 5, a strip material wider than the thickness of the product M is bent into a rectangular shape, and the strip material is horizontally welded as support plates 17 on both sides of the peripheral wall fixed by welding. It does not necessarily have to be square, but may be U-shaped.

Is there any mechanism for transporting the enclosing frame 16 to its support position B? In this embodiment, the supporting plate 17 attached to the enclosing frame 16 is placed on the roller conveyors 2 on both sides, and is stopped by a stop mechanism (not shown). It is made to stop accurately at the surrounding frame support position B.

Therefore, since the enclosing frame 16 is stopped with the support plate 17 placed on the rollers, if a pallet P that is slightly wider in length and width than the surrounding wall of the enclosing frame 15 rises from directly below, the roller conveyor 2
It is possible to pass through the surrounding frame 16 without hitting the frame. Furthermore, since the opposing beam [2] that scoops up the pallet P is only supported at both ends by the chain [1],
It is better to arrange appropriate guide materials to guide the surrounding frame 16 so that it does not hit the roller conveyor 2 and instead rests on the periphery of the pallet P, as described above.

Note that the stopper or positioning mechanism for correctly stopping the product M and the pallet P in FIG. 3 at the stop position A is also omitted from the figure because it is a well-known technique. If the pallet l~P is stopped on the roller conveyor 1-1-, or if the pallet receiver Jt13 of the opposing beam 12 is placed in a position where it does not hit the rollers, the barrel~P can be pulled onto the holder 13. There is no problem in hanging it.

With the following configuration, this invention device stops the products M on the pallet coming out of the molding device one after another at the stopping position HA in the machine frame 10, and at the same time feeds one enclosing frame 16 to the enclosing frame support position B. , an opposing beam 12 that operates continuously or intermittently in a circular manner.
, first the pallet P with the product on it, then the surrounding frame 1
6 and stack them one after another in stacking area C as shown in Figure 1.

When a suitable number of products -L have been obtained, in this case, the curing scene starting from the stacking area C is moved by moving the conveyor 3 to enter the curing area. The laminated products are placed one after another in the curing field, and the products are taken out one after another after the required time has elapsed.

Incidentally, the surrounding frame 16 may be provided with holes in its peripheral wall so that steam, air, or hot air can flow therethrough.

Then, on the exit [1 side, a similar one to the machine frame 10 is provided,
By changing the process in the opposite direction of the thick arrow in Figure 1, the stacking area C is used as the unloading area, and the product pallets P with 16 boxes, starting with the 11th layer, are moved to the frame support position B in Figure 1. A lifting device is added to the valet holder 13 of the opposing beam 12 so that it can be moved. In other words, when the opposing beam 12 reaches the bottom of the two-tiered pallet P, the receiver 13 that had been released upward is turned sideways, scoops up the pallet I-P, and passes the enclosing frame support position B downward. Then, the surrounding frame support plate 17 on the pallet P hits the conveyor 2 and stops, and the product M and the pallet P are at the stop position A.
and is received by the conveyor l. Needless to say, the enclosing frame 16 at the support position B is sent to the collection position by the conveyor 2, and the pallet P carrying the products M is carried by the conveyor 1 to a product storage area or other required position.

Although one embodiment of the apparatus has been described above, it goes without saying that this invention can be modified and applied as appropriate depending on the implementation conditions using the well-known techniques of mechanical engineers. It is not only implemented by the inventive device. The enclosing frame 16' shown in FIGS. 5 and 6 has pillars, in this case plates 18 diagonally cut into corners, fixed to the four corners of the rectangular peripheral wall and projecting upward and downward and resting on the four corners of the pallet P. Since this column 18 is higher than the thickness of the product, the height of the rectangular peripheral wall may be lower than the thickness of the product. When stacked using this enclosing frame 16', when curing in a curing room, a gap is created by the part of the square peripheral wall of the pillar material that protrudes from below -L, and steam, hot air, etc. circulate through this gap, so that curing is possible. The effect will increase. Of course,
The rectangular peripheral wall may also have holes or the like to allow steam, hot air, etc. to flow through it. In this way, the present invention can be adapted to difficult implementation conditions through the ingenuity of the person implementing the invention.

(Effects of the Invention) The first method for curing concrete products of the present invention has opened a third method that takes advantage of the advantages of the conventional rack method and direct stacking method and eliminates their disadvantages.

In other words, according to this invention, by simply placing an easy-to-handle enclosing frame on each pallet on which products are placed, it is possible to stack products one after another at appropriate intervals, and the products can be stacked one after another at appropriate intervals. By putting it in the field, you can achieve the same effect as curing with a rack. Not only does it eliminate the need for various equipment when using racks, but it also eliminates the inefficiency of curing space due to fixed rack dimensions, and makes the most effective use of curing space by matching the dimensions of the surrounding frame to the product dimensions. I tried to get it.

In addition, in the device of the present invention, the stop positions of pallets 1~ on which products are placed and the enclosing frame supply position are stacked below L, and a stacking area is provided adjacent to these, so that a receiver for hooking the edge of the pallet is provided. By moving the attached opposing beams in a vertical rectangular shape,
First, the pallet at the stop position is hooked up and raised, and the pallet itself scoops up the surrounding frame, turns to the side, and unloads onto the stacking area, creating an efficient mechanism.

Since the enclosure has support plates that protrude laterally, when it is fed into the enclosure support position, the enclosure is supported by the support plates on both sides, and the pallet rising in the center becomes obstructed by the support mechanism. This made it possible to skim the surrounding frame without being hit.

That is, the apparatus of the present invention could provide the most efficient mechanism for exerting the effects of the method of the present invention.

[Brief explanation of the drawing]

Figures 1 and 2 are an elevation view and a plan view of an embodiment of the inventive device, Figure 3 is a right side view of Figure 1, and Figure 4 is an enlarged plan view of the engagement portion between the circulation chain and the opposing beam. 5.6 are plan and elevation views of other embodiments of the enclosing frame. 10... Machine frame, 11... Endless chain, 12... Opposed beam, 13... Pallet receiver, 16... Enclosing frame. Patent applicant Chiyoda Giken Kogyo Co., Ltd. Procedural Amendment (
(Voluntary) November 10, 1986

Claims (2)

[Claims] (1) Concrete products that come out of the forming equipment on flat pallets one after another are stopped at a stopping position, and a pallet of the same shape is supported on the pallet at the stopping position and outside of the products at a height that does not touch the products. Place the surrounding frame on the pallets, and stack the pallets in this state one after another on the stacking area on the feeding mechanism to the curing area. When the appropriate number of tiers have been stacked, the pallets are sent to the curing area by the feeding mechanism and removed from the curing area. When the concrete products arrive, the above-mentioned enclosing frames are sequentially collected from the upper pallet, and only the products with pallets are sent to the required position. (2) A peripheral wall that rests on the pallet and surrounds the product, supporting the same-shaped pallet at a height that does not touch the product, and a plurality of surrounding frames having supporting plates extending laterally on both outer surfaces of the opposing wall, and a molding device. A cubic machine frame that surrounds the stopping position of the products on the pallet, the supporting position of the single enclosing frame directly above it, and the stacking area adjacent to these, and the front and rear of this machine frame. Four endless chains circulating in a rectangular shape on each left and right vertical plane, and a pair of left and right beams, whose front and rear ends are engaged with the front and rear left and right endless chains, and by synchronous circulation of each chain, the horizontal It is equipped with an opposing beam that performs a vertical rectangular circulation movement in a posture, and two or more pairs of pallet holders that project inward from the opposing beam and are pivotally supported so that they escape upward when lifted up. A curing preparation device for concrete products, characterized in that the operation scoops up the pallet at the above-mentioned stop position, scoops up the enclosure directly above it, and unloads and stacks it on the stacking area.