JPS60212302A - Surface pallet peeling method and peeling device for concrete block - 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 and apparatus for removing face parts of concrete blocks.

For example, the latest manufacturing method for machi blocks for civil engineering works is to supply surface pallets one after another to a forming form for immediate demolding, then pour concrete onto the pallets, vibrate and pressurize them, and immediately demold them and send them to a curing bath. . After curing, the pallets are peeled off and recycled before being sent to the product storage area, but the blocks are heavy and the pallet peeling process using hammers, chisels, etc. is monotonous, inefficient, and hard work. .

The present inventor has developed a method and device for mechanically peeling off blocks that have come out of the curing bath on a surface pallet and separating them from the surface pallet in the middle of the conveyance path.
A patent application has been filed as No. 6068.

In this method, the fixed surface of the block and the pallet was successively peeled off from one end until the entire surface was peeled off.

This invention is a concrete block underlay.
Our main focus was on a method and device that would allow a surface pallet that is stuck together without any steps to be separated from the block placed on it by controlling its horizontal movement and floating.

If it is possible to stop only the surface pallet, it will be easy to separate it from the block.

First, an outline of the peeling method and apparatus of the present invention will be described, and then embodiments thereof will be described with reference to the drawings.

The surface pallet peeling method of the present invention involves restraining both or either one of the surface pallet and the blocks against the concrete block on the surface pallet that has been immediately demolded and cured, so that the surface pallet and the blocks can be peeled off for separation. It is characterized by causing relative movement.

Further, the surface pallet peeling device of the present invention is arranged so as to surround the concrete blocks placed on the surface pallet, immediately demolded and cured, at a fixed position, and each block that has come to the above-mentioned fixed position advances toward the surface pallet. When the restraining materials and their driving devices and the above-mentioned restraining materials pinch the surface pallet, the concrete IJ
- It is characterized by being equipped with a holding claw that slightly bites into the outer surface of the dob p, and a drive mechanism that causes the blocks and pallets to move relative to each other for separation.

FIG. 1 shows an example of the state near the concrete block conveyance path A to which the present invention is applied. The concrete blocks λ, which were immediately removed from the mold by placing them on a surface pallet (surface pallet) / and finished curing in that position, are sent out one after another from the curing field on the right side of the figure, two in parallel in this example, to the product storage area. Head to A surface pallet peeling device B of the present invention is installed in the middle of the conveyance, and the pallets ()/ are dropped to a dropping place 0, and the blocks λ are laid down on the conveyor D by a gripper 1 device t.

In the surface pallet peeling device B, four restraining materials 3 are arranged in this case so as to surround the four sticks that stop at fixed positions on the conveyance path A. In this example, as shown in FIGS. 2 to 5, the restraining members 3 are fixed one at each end of the left and right driving plates along both sides of the conveying path A, and are arranged on plates inclined at 45 degrees with respect to the conveying direction. The front surface is pressed against the corner of the pallet. As shown in FIGS. 3 and 4, the driving plates 6a and 6 are arranged to move symmetrically by means of left and right guide shafts ≦ and guide bearings 6α. That is, when the front drive plate 5 is pushed out by the fluid pressure cylinder 5 directed at right angles to the conveyance path, the front drive plate q is
is included in σ1 and moves symmetrically. Fig. 5 shows the plane, and the left and right driving plates and the left and right sides are symmetrically moved toward the center, and each restraining member 3
When it advances to the position indicated by the chain line, each of the front surfaces 3a of the restraining materials hits the pallet/periphery (corner in this example) and stops as shown in Fig. 4.6.

Each of the restraining members 3 has a restraining pawl 3b on its upper part, which slightly bites into the outer surface of the stopper as shown in FIG. 6 when the restraining member 3 pinches the surface pallet l. In theory, the position of the holding claw 3b is a pallet! It is at a height that cuts into the concrete just above the periphery. Therefore, the driving force of the drive plate +, 4I by the fluid pressure cylinder j is the drive force of the drive plate Hiroshi, 4! It is designed so that the upper four restraining claws 3b do not dig into the outer surface of the block 2, and when the front surface 3α of the restraining material hits the upper edge of the pallet, it stops (does not deform the pallet l).

For the restraining material 3 shown in Figs. 6 and 7, since the tips of the restraining claws are worn out, make a front (stopping) surface 3α that hits the pallet/upper edge and a restraining claw 3b on both sides of one board, and then turn it over. I'm making it available for use.

Now, if the horizontal movement of the pallet is controlled by the restraining material 3 and the floating is controlled by the restraining claw 3b, the block λ and the pallet I will be caused to move relative to each other for separation. It can be performed in a variety of ways using well-known technology. In this embodiment, the block 2 is picked up by a picking up device t as shown in FIG. 8 and pulled from the pallet. The gripping arms 1ra and ra of this gripping device t also approach and separate from each other using a mechanism similar to that in which the left and right drive plates ≠ and Hiroshi are moved symmetrically. Attach a rubber member to the tip of the arm to hold it so as not to damage the outer surface of the bud. In this embodiment, the rubber member 9 can freely rotate at the end of the arm tα so that the block λ can be changed from a standing position to a horizontal position while holding the block λ. By adjusting the tightness of the band 10, its free rotation can be appropriately frictionally braked.

Although one embodiment has been described above, this invention is a surface pallet that is integrally attached to the concrete slab without any difference in level.
/ is mechanically restrained from moving horizontally or from floating, and its greatest feature lies in the fact that the front surface of the restraining material pinches the periphery of the pallet, and the retaining claws on top of it are slightly dug into the concrete on the outside of the pallet. After that, there are various methods and mechanisms for separating the pallet and blocks.

As in the above example, grab the block and pull it straight up.
In addition to peeling off the entire surface of the adhesive at the same time, it is easy to think of ways to peel it off from one side, such as pulling it up to one side, or pushing the head of the block 2 laterally and tilting it. Moreover, it is also easy to peel off the restraining material 3, drive plate, etc., by descending or turning the restraining side, without holding the block 2 and moving it.

It is also possible to advance the restraining material 3 to a part other than the corner of the pallet/upper edge, and to bite the restraining claws 3b into the flat concrete surface. In that case, a wide holding claw 3b as shown in Fig. 6.7 is not suitable, and naturally a narrow claw or a triangular shape will be used. In the case of the claws 3b in Figures 6 and 7, no matter how wide they are, there is no problem because they only slightly dig into the corner of the block.
This makes it possible to accommodate slight changes in the dimensions of the block 2.

The number of restraining members 3 and their holding claws 3b is generally four when the surface pallet l is rectangular, and five when the surface pallet is pentagonal, but two or three prevent the horizontal movement and levitation of the surface pallet. If we can stop this from happening, it is enough.

Moreover, it is not necessary to move all of the restraining materials 3; one side of the restraining materials 3 may be fixed, and the other restraining material 3 may push and move the pallet.

The present invention can be applied to surface pallets that are not dish-shaped but flat plate-shaped.

This invention eliminates the labor of workers who move heavy blocks and peel off surface pallets using hammers, chisels, etc.

The pallet, which is attached to the block as one piece with no difference in level and has no handholds for hanging onto the machine, is held down by the restraining material to control its horizontal movement, and at the same time, the pressurized force of the clamping material releases the restraining pawl at the top of the restraining material. Since it slightly bites into the block outer concrete just above the upper edge of the pallet, the amount of biting can be kept to the minimum that can prevent the noglet from floating up. In other words, since the pallet can be reliably clamped with a biting depth that is equal to or slightly exceeds the thickness of the upper edge of the pallet, the scratches on the outer surface of the block can be suppressed to an almost negligible extent.

[Brief Description of the Drawings] Fig. 1 is an explanatory diagram of an example of a concrete block transport path to which the present invention is applied, Fig. 2 is a plan explanatory diagram thereof, Fig. 3 is an elevational explanatory diagram of the inventive device, and Fig. 4 The figure is a longitudinal cross-sectional view thereof, FIG. 5 is a plan view showing the movement of the restraining material 3, FIGS. 6 and 7 are cross-sectional and front views of the restraining material i, and FIG. 8 is an explanatory diagram of an example of a grasping device. . l...Surface pallet, 2...Concrete block,
3...Retaining material, 3b...Retaining claw,! ...driving fluid pressure cylinder with restraint, t...gripping device.

Claims (2)

[Claims] (1) Immediately demolded and cured concrete on surface pallets
A concrete block pallet N method for a concrete block, which comprises restraining both or one of the pallet and the block to cause the block and pallet to move relative to each other for separation. (2) The concrete blocks placed on the surface pallet, immediately demolded and cured, are placed in a fixed position so as to surround them, and each of the restraining materials and their drive move forward toward the surface pallet of the block that has come to the above-mentioned fixed position. a device, a restraining claw that slightly bites into the outer surface of the concrete block when the restraining material pinches the surface pallet, and a drive mechanism that causes the block and the pallet to move relative to each other for separation. A concrete block surface pallet peeling device characterized by comprising: