JPS6112086Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a demolding device for concrete blocks, and in particular, it is capable of demolding a large number of formworks simultaneously on a conveying line, and there is no risk of damaging the concrete blocks during demolding. Concerning demolding equipment for concrete blocks.

Conventionally, the method of removing a concrete block such as a block for a seawall from a formwork is as shown in Japanese Patent Publication No. 56-12487, in which the side frames of the formwork are opened outward, and then the blocks are properly gripped. The concrete block can be removed from the formwork using a tool, or the concrete block can be removed by lifting the formwork using locking rods that are linked to the opening and closing of the concave formwork plates, as shown in Japanese Utility Model Publication No. 44-24229. A method has been proposed in which the formwork is dropped under its own weight and then only the formwork is pulled up using an appropriate hanging device.

However, the former method is not easy to work with and is not easy to automate. In addition, since the latter uses only its own weight to separate the concrete block and formwork,
Depending on the state of close contact, there is a risk that the concrete block and formwork will not be separated, and when lifting the formwork with a hanging tool, there is a risk that the concrete block will also be lifted at the same time. Furthermore, depending on the condition of the concrete after curing, there is a risk that the concrete block will be damaged when it falls under its own weight.

The present invention was developed in view of the current situation, and its purpose is to make it possible to simultaneously demold a large number of formworks on a conveyance line, and to produce concrete without the risk of damaging concrete blocks during demolding. The present invention provides a demolding device for blocks.

The present invention consists of a gate-shaped frame disposed across the transport line of the formwork to be demolded in the width direction, a cart that reciprocates on this frame in the transport direction of the transport line, and a plurality of presser metal fittings that are moved up and down by a first drive mechanism; and a plurality of presser metal fittings that are attached to the presser metal fittings and that are moved up and down simultaneously with the presser metal fittings by the first drive mechanism, and that are moved up and down independently of the presser metal fittings by a second drive mechanism. holder and a vibrator that vibrates the formwork, each concrete block in a plurality of formworks placed on a conveyance line is lowered by the operation of the first drive mechanism and stopped at a predetermined lowered position. The holding fittings press down through the upper end opening of the formwork to prevent the concrete blocks from rising from the conveyance line, and when the first drive mechanism stops operating, the holding fittings hold down the concrete blocks of each formwork. , the mold is removed by gripping it with the holder and pulling it up with the second drive mechanism while vibrating it with a vibrator.

The present invention will be described below based on an illustrated embodiment.

In the figure, 1 is a gate-shaped frame placed across the width direction of the conveyance line of the formwork 2 to be demolded, and on this frame 1, two rails 3 are fixed in the direction of the conveyance line. A cart 4 is installed on the rail 3 to reciprocate in the transport direction.

The trolley 4 is assembled into a frame shape as shown in FIGS. 1 and 2, and rollers 5 provided on both sides thereof roll on the rails 3. Both ends of a chain 9 disposed through sprockets 6, 7 and a motor 8 are connected to the cart 4, as shown in FIG.
It is designed to reciprocate by driving forward and reverse rotation. As shown in FIG. 1, support members 10 that protrude downward are fixed to the lower surfaces of both sides of the truck 4, and the positions of the support members 10 can be adjusted via pins 11 inside each support member 10. A guide rail 12 is attached to each. As shown in FIG. 1, a vertical movement device 14 is disposed between both guide rails 12 and includes guide rollers 13 that roll along the guide rails 12 at both end portions.

As shown in FIGS. 1 and 2, this vertical movement device 14 consists of an upper first drive frame 15 and a lower second drive frame, which are constructed by arranging two channel steel back to back at a required interval. The guide rollers 13 are rotatably attached to both ends of the first drive frame 15, respectively. A cylindrical member 17 is also fixed to the first drive frame 15 directly above the guide roller 13 via a chevron-shaped connecting member 18, and a lower end portion of a chain 19 is fixed to each cylindrical member 17, respectively. . The upper end side of this chain 19 is wound around a sprocket 21 attached to a drive shaft 20 disposed laterally on the truck 4, and the first drive frame 15 is rotated as the drive shaft 20 rotates. As the sprocket 21 rotates, it moves up and down along the guide rail 12. The drive shaft 20 is
As shown in FIGS. 1 and 2, it is connected to a geared motor 22 with a brake attached to the truck 4, and is driven to rotate in forward and reverse directions by the forward and reverse rotation of this motor 22.

The first drive frame 15, which moves up and down in this way, is provided with nine shafts 23 and two vibrators 24 arranged at regular intervals as shown in FIG. As shown in FIGS. 1 and 2, a hook-shaped holder 25 is integrally provided at the lower end of each shaft 23 that passes through the shaft 16 in a non-contact manner. A handle 2a of the formwork 2 is locked between adjacent holders 25, as shown by chain lines in FIG. The first drive frame 15 also includes a first
As shown in the figure and FIG. 2, two hydraulic cylinders 26 are mounted and fixed, and the first drive frame 1
A second drive frame 16 is fixed to the tip of each rod 26a that passes through the inside of the rod 5 without contact. The second drive frame 16 is configured to move up and down independently of the movement of the first drive frame 15 by the expansion and contraction operation of the hydraulic cylinder 26. As shown in FIG. 1, eight presser metal fittings 27 are attached to the second drive frame 16 via pins 28 between adjacent holders 25.
7 is adapted to press a concrete block 29 in the formwork 2 through the opening 2b at the upper end of the formwork 2, as shown by the chain line in FIG.

On the other hand, the formwork 2 being transported on the transport line
Eight pieces are placed on one pallet 30 with the concave form plate 2c open, and each pallet 30 is placed on the roller conveyor 31 with the spacing members 32 on both sides mutually separated. It is designed so that they are brought into contact with each other and conveyed continuously. Further, at a position inside the frame 1 above the roller conveyor 31, a conveyor 33 for carrying out the empty mold 2 after demolding extends in a direction perpendicular to the roller conveyor 31, as shown in FIGS. 1 and 2. It is set up.

Next, the effect will be explained.

When demolding the concrete blocks 29 in the formwork 2, which have been placed on pallets 30 in groups of 8 and conveyed on the roller conveyor 31, first move the cart 4 to the left end side as shown in FIG. In this state, the geared motor 22 is driven to lower the first drive frame 15 of the vertical movement device 14. Then, the holder 25 is positioned below the handle 2a of the formwork 2.

Next, move the cart 4 to the right end side in FIG.
The handle 2a is locked to the holder 25 as shown by the chain line in the figure.

Next, the hydraulic cylinder 26 is operated to extend the rod 26a, and the concrete block 29 in the formwork 2 is pressed by the presser fitting 27 through the upper end opening 2b of the formwork 2, as shown by the chain line in FIG. .
Then, in this state, the first drive frame 15 is moved upward. Then, as the first drive frame 15 moves upward, the rod 26a expands, and the pressing state of the concrete block 29 by the presser metal fitting 27 is maintained, and as the first drive frame 15 moves upward, the holder 25 also expands. As the mold 2 rises, the mold 2 is pulled up and the mold is removed. At this time, if the concrete block 29 is soft, the vibrator 24 is operated only during demolding.

The formwork 2 is moved 10 times by the upward movement of the first drive frame 15.
After raising the concrete block 2 by ~20 mm, the hydraulic cylinder 26 is moved in reverse and the concrete block 2 is lifted by the holding metal fitting 27.
9 is released, the first drive frame 15 is further moved upward, and the empty formwork 2 is transferred to the conveyor 3.
Position it above 3.

Next, move the cart 4 to the right end side in FIG.
The formwork 2 is positioned on the conveyor 33 as shown by the chain line in the figure. and then the first drive frame 15
is lowered to place the formwork 2 on the conveyor 33, and the cart 4 is moved to the left end side in FIG. 2 to return to the initial state of the demolding operation. The empty formwork 2 placed on the conveyor 33 is conveyed to the left end side in FIG. Roller conveyor 3 in the loaded state
1 to the next process.

The above operations are repeated to successively remove eight molds.

As explained above, this embodiment provides the following effects.

(1) Extremely efficient as eight molds can be removed at the same time. Furthermore, since the empty formwork pulled up by the holder is directly sent to the mold-setting process, mold-setting becomes easy.

(2) Since the concrete block does not float up during demolding, there is no risk of damage to the concrete block due to falling. Furthermore, if the concrete block is soft, it can be demolded while being shaken, so demolding is smooth and there is no damage caused by demolding the block.

(3) Since the concrete block after demolding is transported to the next process while being placed on a pallet, work in the next process is easy.

FIG. 3 shows another embodiment of the present invention.
The lower end of the chain 19 is connected to the second drive frame 16
It is fixed to the side.

That is, guide rollers 13 that roll along the guide rails 12 are rotatably attached to both ends of the second drive frame 16.
3, the cylinder member 17 connects to the chevron-shaped connecting member 18.
Fixed via. A lower end portion of the chain 19 is fixed to each cylinder member 17, respectively.

With this configuration, it is not necessary to operate the geared motor 22 only by operating the hydraulic cylinder 26 during demolding, and the geared motor 22 only needs to be started when lifting the empty formwork 2 after demolding. It will be a good thing. This makes the operation easier.

In both of the above embodiments, the case where eight molds are removed at the same time has been described, but it may be more or less than this. Many other modifications and changes can be made without changing the gist of the present invention.

As explained above, according to the present invention, a large number of formworks can be demolded simultaneously on a conveying line, and there is no risk of damaging concrete blocks during demolding.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing an embodiment of the present invention;
Figure 2 is a partial sectional view of Figure 1 seen from the right side view;
FIG. 3 is a partial sectional view showing another embodiment of the present invention. 1...Frame, 2...Formwork, 2a...Handle,
2b...Opening, 4...Dolly, 8...Motor,
9, 19...Chain, 12...Guide rail,
13...Guide roller, 14...Vertical movement device, 1
5...First drive frame, 16...Second drive frame, 20...Drive shaft, 21...Sprocket,
22...Geared motor, 23...Shaft, 2
4... Vibrator, 25... Holder, 26...
Hydraulic cylinder, 26a... Rod, 27... Holder fitting, 29... Concrete block, 30...
Pallet, 31... Roller conveyor, 32... Spacing material, 33... Conveyor.

Claims (1)

[Scope of utility model registration request] A gate-shaped frame arranged across the conveyance line of the formwork to be demolded in the width direction, a dolly that reciprocates on this frame in the conveyance direction of the conveyance line, and a first drive that reciprocates together with the dolly. a plurality of presser metal fittings that are moved up and down by a mechanism; a plurality of holders that are attached to the presser metal fittings and that are moved up and down simultaneously with the presser metal fittings by the first drive mechanism, and that are moved up and down independently of the presser metal fittings by a second drive mechanism; and a vibrator that vibrates the formwork, and a presser metal fitting that lowers each concrete block in the plurality of formworks placed on the conveyance line by the operation of the first drive mechanism and stops at a predetermined lowered position. , the concrete blocks are held down through the upper end opening of the formwork to prevent them from rising from the conveyance line, and each formwork in which the concrete blocks are held down by the holding fittings is held down by the holder due to the stoppage of the first drive mechanism. A demolding device for a concrete block, characterized in that demolding is performed by gripping the concrete block and pulling it up with a second drive mechanism while vibrating with a vibrator.