JPS5818211B2 - Method of forming free-standing blocks and its formwork - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a molding method and a mold for efficiently manufacturing free-standing stacked blocks, which have been thought to be impossible to mold automatically, without causing deformation of the product even if the product is immediately demolded. It is related to.

Conventionally, self-supporting stacked blocks of the shape shown in Figures 3 and 4 of the attached drawings, in which the face part and the retaining part have the same shape, are inefficient, but concrete is poured into each form and hardened, and then the form is removed. It was dismantled and demolded.

This method involves assembling the formwork, pouring the concrete, dismantling the formwork after it has hardened, removing the mold, cleaning the formwork, and assembling.This method requires a lot of effort in the current era of high labor costs. Manufacturing free-standing stacked blocks was extremely difficult.

However, since this self-supporting stacked block has a simple shape, it has very great features and effects in terms of stacking, handling, etc.

For example, as the name suggests, it is self-supporting, so it can be stacked one after another when stacking, and unlike conventional stacked blocks, there is no need for supporting stones at the bottom.

In addition, the concrete can be filled after stacking several layers,
At this time, there is no need for a backing plate for assistance.

Therefore, since the concrete can be built in several stages at once, the stacked blocks can be integrated, and since the joint ends and retaining parts are connected, they do not move even when empty stacking. Therefore, it has not been possible to realize a molding method and mold that can efficiently mold and demold the block without deforming it.

The inventor took this point into consideration and, as a result of intensive research, succeeded in automatically molding this self-supporting stacked block.

Next, the present invention will be described in detail with reference to the accompanying drawings. Reference numeral 1 is a machine base of a block molding machine, and 2 is a shock absorber using anti-vibration rubber that prevents unnecessary transmission of vibrations and prevents wear and tear on the device.

3 is a vibration support stand with vibrators 4 installed on both sides, a surface pallet holder 6 is fixed on the vibration support stand, and a T-shaped rod C for pushing up blocks is suspended from the center.

Reference numeral 5 denotes a cylinder that slightly pushes up the block that has been formed, together with the surface pallet, and at the same time rotates the block, which is framed at an angle of 8 degrees, to its normal position to make it easier to transport, as will be described later.

Reference numeral 5' is a push-up table that hangs down from the pallet table, and it fits under the T-form frame 6' above to push up the block, but during molding, in order to isolate it from vibration, when pushing up the block, Other than that, there is a gap from the T-shaped frame.

C is an arm rod for taking the molded blocks out of the machine, and as soon as the left and right formworks 7 and 8 open, they rise slightly to support the bottom of the blocks, place them there, and take them out one by one onto the transfer machine. transport.

Reference numeral 7 denotes a right outer formwork, and on the inside with respect to the moving direction A of the formwork, a divided inner formwork γ twisted by an angle a is fixed.

8 is the outer formwork on the left side on the opposite side, and the movement direction of the formwork is A as above.
On the other hand, one divided inner formwork 8' twisted at an angle of a degree is fixed to the inner side thereof.

Therefore, the twisting angle a with respect to the movement direction A in which both formworks 7 and 8 are opened and closed to the left and right is not particularly limited, but in practice, it is approximately 5 to 10 degrees from the point of view of smooth mold removal. It is.

Also, the core type 7/ which is the inner formwork. 8' is tapered with a punching angle to facilitate demolding.

9 is a slide rail that opens and closes the formwork to be divided from side to side.

Reference numeral 10 is a slide metal that supports the outer formwork that is divided into left and right parts, and 11 and 11/ are cylinders that open and close the formworks 7 and 8.

Reference numeral 12 denotes a sliding plate that moves forward and backward; a material feeding chute 15 is removably provided in the center of the sliding plate; 70 a press plate 1 is provided with a push plate 17, a spring 17', and a dimension adjustment bolt 1B at the front end;
Fix 6.

13 is a receiving metal for the sliding plate 12, and is attached to a bracket 13'.

Reference numeral 14 denotes a cylinder that moves the sliding plate 12 forward and backward to move the opening on the formwork, the feed chute, and the press plate 16.

Reference numeral 19 denotes a press-fitting rod for press-fitting into the uncompacted material fed into the formwork and compacting it so that there are no voids in every corner of the formwork shape.

This press fitting rod 19 once rises and when the press plate 16 moves to the opening of the mold, it presses the press plate 17 and compresses the spring 1T, while descending to a specified position and compressing it.

20 is a virtual diagram showing the operation of the material feed chute and press plate as indicated by dotted lines.

The formwork structure of the present invention has been described above.Next, before explaining this manufacturing process, the structural features of the present invention will be shown. The reason why the formwork is twisted by an angle of a degree is that when the pallet is put into the formwork, even if the position is slightly incorrect, the formwork is divided, so the formwork always closes in the correct position and the pallet base The mold is easily removed from the mold without causing damage or other negative effects on the product because it fits on top and a gap is created between the molded block and the mold surface at the moment the mold is separated and demolded.

2. One of the reasons why it is not possible to immediately demold a three-dimensional product block, which was considered impossible in the past, is as shown in Figure 5 (a).

As shown in the above, it was deformed due to its own weight and lost its commercial value, but in the case of the present invention, the sagging deformation is prevented by thickening the circumferential surface of the central part of the hole (arrow C in Fig. 3).
Reference) In order to create a hole that can prevent the center part from sagging due to its own weight, the center part is narrow and the outside part is large, and the core mold that divides each other at the narrow center is fixed to the appropriate position of the formwork and divided. The block, which is molded by opening and closing left and right along with the outer formwork, can be removed from the mold without causing any stress.

In addition, in the case of a single-barrel type block mouth, if the thick hanging part of the facing surface is thickened outward (see arrow C in Figure 4), the core mold can be divided to the left and right at the center of the thickening. The center of the retaining part of the block is thickened to prevent it from sagging, and the block can be immediately demolded.

Next, to explain the operation process of the present invention, the cylinder 17,
By the action of 17', the divided formworks 7 and 8 are opened, an empty pallet is placed on the pallet holder, the divided formworks 7 and 8 are closed and pressed, and the formwork is integrated, and material is fed into the formwork opening. Transfer the chute 15 and feed concrete in a fixed amount using a hopper or conveyor.

In the case of a machine in which the vibrator 4 starts at the same time as this material feeding starts, the machine frame does not vibrate due to the action of the shock-absorbing rubber body 20, and only the pallet and the material receive the vibration, and the formwork does not vibrate at all.

When a certain amount of concrete material is fed into the formwork, the hopper or conveyor stops, and the press-fitting rod 19 above the formwork descends into the formwork through the feed chute and press-fits the material. Stir to harden.

Then, the press-fitting rod 19 is once raised, the material supply chute is retreated, and the press plate 16 is moved to the mold opening.

When this press plate 16 comes to the press position, the press-fitting rod 19 is pressed again.
will be lowered and from now on, the press plate 17 will be pressed to compress the spring 1γ and press it to the specified position, but the compression time of this spring is such that the material is moved and filled from the bottom while lightly pressing the concrete material to reduce the void. It is something to do.

When the press plate 16 presses down to the specified height, the press-fit rod 19
rises, molding is completed, and at the same time, the vibrator 4 stops.

The divided formworks 7 and 8 open left and right and the thrust cylinder 5
The block is raised and returned to its normal position while twisting the block, and the take-out arm C rises to place the block and retreat outside the machine to be transferred to the transfer machine.

The above process is repeated automatically and sent to a normal curing device.

When using the method and formwork of the present invention, blocks that conventionally could not be demolded immediately can be molded without deformation even after demolding, and the molding capacity can be approximately 2 blocks per minute, and it is possible to mold blocks that were conventionally impossible to demold immediately. This has the advantage of being able to efficiently produce blocks with higher strength compared to conventional methods.

[Brief explanation of drawings]

FIG. 1 is a full side view of a molding machine according to the present invention equipped with a split formwork, and FIG. 2 is a plan view of the split formwork. FIGS. 3 and 4 show a self-supporting stacked block molded according to the present invention, where A shows the front, the mouth shows the side, and C shows the cross section, respectively. Figure 5A2 shows a conventional deformable block. 5... Thrust cylinder, 6' curve... T for thrusting
Formwork, 7.8...°...Outer formwork to be divided, 7/, 8/
...Inner formwork to be divided, 9...Slide rail, 16...Press plate, 19...
Press-fit frame.

Claims (1)

[Scope of Claims] 1. A mold is divided into two along the diagonal of the block to be molded so that it can be opened and closed to the left and right, and the mold is twisted at an angle of a degree with respect to the direction of movement in which it opens and closes. A method for forming a self-supporting stacked block, in which taper-shaped core molds with thicker ends and thinner centers are arranged in the left and right molds, and the core molds are matched at the center to form the body. 2. Molding The formworks 7 and 8 of the block to be made are divided into two along the diagonal line of the block, and the formworks 7 and 8 are placed on the slide rail 9 so that they can be opened and closed as shown by arrow A, and the formwork is moved to open and close. Arrange the configuration by twisting it at an angle of a degree with respect to the direction, and formwork?
A T-shaped core mold 7'8' arranged at 8 is provided with a taper b at the draft angle so that they match each other at the center, and the molded part below the mold is returned to its normal position. Thrust rod 6
A free-standing formwork for forming blocks.