JPS5812131B2 - Projection adding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a protrusion-applying device that applies protrusions, particularly draining protrusions, to the surface of roof tiles, etc. during the manufacture of roof tiles.

Generally, floating cement tiles with draining ridges are manufactured by making a general-purpose molded body using a press molding device or a roll extrusion device, and then curing and hardening the molded body.

That is, the press molding device has a pair of upper and lower press molds, and a hydrous mortar (
A general-purpose molded product with draining ridges is made by adding a mixture of cement, sand, etc. and kneading it with water and press-molding it.

This general-purpose molded body becomes a floating cement tile with draining ridges after curing and hardening.

According to this device, the protrusions can be freely provided on the front and back surfaces of the general-purpose molded body, so the draining protrusions can be easily and freely formed.

However, this device has extremely poor production efficiency (1
(Only 5 to 10 roof tiles can be manufactured per minute) and only hydrated mortar with a high moisture content can be used.
The drawback is that a large amount of alkaline waste water is discharged during pressure molding, and large-scale equipment is required to treat it.

On the other hand, a roll extrusion device has an extruder and a pair of rolls, and extrudes water-containing mortar, and then forms this with the rolls to produce a general-purpose molded article having draining ridges.

According to this device, it is possible to use hydrated mortar with a low moisture content, and it can be molded continuously, so a large amount of alkaline waste water is not discharged during molding, and roof tiles can be manufactured in large quantities. (60-90 sheets per minute).

However, since this apparatus uses an extruder and rolls to produce a general-purpose molded article with draining ridges, there is a problem in that it is impossible to form the draining ridges perpendicular to the extrusion direction.

That is, this device has a drawback in that the direction in which the draining ridges can be formed is limited.

By the way, these problems can be solved if protrusions can be easily provided on the surface of a general-purpose molded article having an arbitrary shape and in an arbitrary direction.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a protrusion providing device that can easily form protrusions on the surface of an object to which protrusions are applied and in any direction. purpose.

An embodiment of the invention is shown in FIGS. 1 and 2.

That is, this protrusion applying device 1 is composed of a string-like block 2 and a protrusion applying block 3, and is movable up and down, and descends to apply protrusions.

The string-like material forming block 2 has a concave groove 4 for forming a string-like material in the axial direction.
a rotating roll 5 with
rotates and when the concave groove 4 for forming a string-like object is positioned within the hopper entrance area a, a composition for forming a string-like object (not shown) is supplied to the concave groove 4 to form a string-like object (not shown). (not shown) forming a feed hopper 6.

The rotary roll 5 has a vertical cross-sectional shape (the shape when cut along the axis) of the peripheral surface of the rotary roll 5 as shown in FIG.
The longitudinal cross-sectional shape of the protrusion-applied body, formed by roll extrusion, or formed by cutting the same into appropriate dimensions, is approximately the same as the longitudinal cross-sectional shape of the body.

The protrusion imparting block 3 is provided with a cylinder 8 and a guide 9 for guiding the string-like object separated from the string-like object forming concave groove 4 into the cylinder 8 so as to be movable up and down inside the cylinder 8. The guided string-like material is applied to the surface of the general-purpose molded body 7 placed on the lower die 10 under low pressure (0.5 to 5 Kg/cm').
It consists of a piston 11 that is pressed by a piston 11.

This protrusion applying device 1 is configured to rise to a position equal to or higher than the height of the string-like object while the piston 11 presses the string-like object.

After the device 1 rises, the piston 11 releases its pressure and rises into the cylinder 8 of the device 1.

Further, the shape of the lower opening 8a of the cylinder 8 and the shape of the pressing surface 11a of the piston 11 are the same as the shape of the surface of the general purpose molded body 7.

In the figure, 12 is a lower die feeding conveyor.

When forming protrusions on the surface of the general purpose molded body 7 using this apparatus 1, it is carried out as follows.

That is, as shown in FIGS. 1 and 2, the rotary roll 5 is rotated to insert the string-forming concave groove 4 into the hopper entrance area a.

Then, as shown in FIG. 3, a certain amount of the string-forming composition 13 is supplied from the supply hopper 6 into the groove 4.

At this time, the remaining composition is scraped off by the hopper opening 6a as the roll 5 rotates, thereby forming a string within the groove 4.

The same raw materials as those for the general-purpose molded body 7 are used for the string-forming composition 13, and the amount of water mixed therein is set so that the composition 13 does not adhere to the grooves 4 and does not lose its fluidity. is used.

As such, for example, 100 parts by weight of cement (
30 to 70 parts of water, 200 to 3 parts of sand
One example is a mixture of 50 parts and kneaded.

Next, the lower die feeding conveyor 12 is moved to position the general-purpose molded body 7 placed on the lower die 10 under the protrusion imparting device 1 as shown in the figure, and in this state, the device is moved as shown in FIG. 1 is lowered to bring the lower opening 8a of the cylinder 8 into close contact with the surface of the general purpose molded body 7.

At this time, the rotating roll 5 rotates as shown in the figure, detaches the string-like material 14 from the string-like material-forming concave groove 4 by its own weight and centrifugal force due to the rotation, and passes it through the guide 9 under the cylinder 8. It is dropped onto the part of the general-purpose molded body 7 inside the side opening 8a.

Next, the piston 11 is lowered from the state shown in FIG. 4 as shown in FIG.
The general-purpose molded body 7 is pressed with a pressure of m', thereby forming protrusions of the string-like material 14 on the surface of the general-purpose molded body 7.

Next, while the piston 11 is being lowered, the device 1 is raised so that the lower end of the cylinder 11 is higher than the height of the protrusion, and then the piston 11 is raised.

Next, the lower mold feeding conveyor 12 (FIG. 1) is driven to send the general-purpose molded product 7 on which the protrusions have been formed forward.

By repeating such operations, it is possible to continuously manufacture the general-purpose molded body 7 provided with the protrusions.

Then, by curing and hardening this general-purpose molded body 7, a tile with protrusions is obtained.

Note that the rotation of the rotating roll 5 described above may be performed in any manner.

For example, half rotations may be fast and half rotations may be slow, or the rotation may be made intermittently.

Moreover, the concave groove 4 for forming a string-like object may have such a shape and size as long as the string-like object can easily be removed.

Further, in the above description, the protrusion imparting device 1 does not move forward and the general-purpose molded body 7 is moved by the lower die feeding conveyor 12, but this may be reversed.

As described above, this embodiment can produce the following effects.

(1) A string-like material 14 is made using the same compound as the compound constituting the general-purpose molded product 7, and this is dropped onto the surface of the general-purpose molded product 7, and then pressed with the piston 11 to make it bulge. Since the ridges are formed, the ridges can be easily provided and formed in any direction, and the ridges and the general-purpose molded body 7 fit well together, and the ridges are firmly adhered to each other.

(2) Since the positive pressure when pressing the string-like object 14 with the piston 11 is low at 0.5 to 5 kg/cm', it can be constructed with a relatively simple structure such as an air cylinder. .

(3) By increasing the rotational speed of the roll 5, a large centrifugal force acts on the string-like material 14 in the groove 4, and as a result, the string-like material 14 is released more quickly. By increasing the operating speed of , the conveyor speed of the lower mold feed conveyor 12, etc., it becomes possible to form protrusions on the summer moldings 7 at high speed (5/min.
(0 to 90 sheets can be processed).

As described above, according to the protrusion-applying device of the present invention, protrusions can be easily provided on the surface of the protrusion-applied object in any direction.

As a result, the conventional problems are resolved.

Next, a manufacturing example will be explained.

Production Example 1 100 parts of cement, 300 parts of river sand, and 50 parts of mixed water were mixed, and this was extruded into a corrugated shape using a roll extrusion device, and then cut into a predetermined size to obtain a corrugated summer molded article.

This summer molded product is placed on the lower mold, and the next step is applied to its surface using a protrusion imparting device (substantially the same as the device 1 in Fig. 1) equipped with a rotating roll having a surface shape corresponding to the above. In this way, ridges were formed.

i.e. 100 parts of cement. 300 parts of river sand, 6 parts of mixed water
The mixture (for string-like objects) mixed with 0 part of
, a depth of 0.4 cm ), the rotational speed of the roll was set to 60 rpm during half a rotation of the roll, and the speed of the half rotation after the string-like material was detached was set to 1 Orpm.

Then, the string-like material that fell onto the surface of the summer molded article was pressed with a pressure of 5 kg/cm' by a piston (using an air cylinder) to form ridges.

The mixture for string-like material was used at a ratio of 5 g/cm'.

In this way, a molded article for summer use provided with protrusions was obtained.

Production Example 2 The first half-rotation speed of the rotating roll was 1100 rpm.

Except for the above, protrusions were formed on the summer molded article in the same manner as in Production Example 1.

Manufacturing example 3 The pressing pressure of the piston was set to 2 kg/cm'.

Except for the above, protrusions were formed on the summer molded article in the same manner as in Production Example 1.

In the above production examples 1 to 3, the time required to form the protrusions was within 1 second, the formed protrusions had a good shape, and were firmly adhered to the summer molded article.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a front view thereof, and FIGS. 3 to 5 are diagrams illustrating its operation. DESCRIPTION OF SYMBOLS 1... Projection imparting device, 4... Concave groove for string-like material formation, 5... Rotating roll, 6...
Supply hopper, 7...Summer molded body, 8...
...Cylinder, 9...Guide, 11...
·piston.

Claims (1)

[Claims] 1. A rotating roll having a concave groove for forming a string-like object along the axial direction on its circumferential surface, a supply hopper for supplying a composition for forming a string-like object into the groove for forming a string-like object, and the above-mentioned string-like object. a driving means for rotationally driving the rotary roll so that the string-like object formed therein is detached from the object-forming groove; A guide for guiding the object to the surface of the object to which the ridges are applied, and a pressing means for pressing the string-like object guided to the surface of the object to be provided with the ridges to the surface of the object to which the ridges are applied and integrate them. A protrusion imparting device equipped with.