JP2001001329A - Method and apparatus for decorating surface of molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and an apparatus for forming an irregular rugged surface on a surface of a molding. SOLUTION: Rotary plates 3, 4 are fixed coaxially with opposed ends of coaxially disposed drive shafts 1, 2. Pluralites of supporting shafts 5 and stopper rods 7 are installed between the plates 3 and 4, and a plurality of small plate- like jigs 6 are respectively rotatably supported to the shafts 5. When the shafts 1, 2 are rotated, the plates 3, 4 are rotated integrally with the shafts 1, 2, and the shafts 5 are circulated around axial centers of the shafts 1, 2. When the shafts 5 are circulated in this manner, the jigs 6 are rotated around the shafts 5, the jigs 6 are brought into contact with an upper surface of a molding 8 to form an irregular rugged surface thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for decorating a surface of a molded article for forming irregularities on the surface of the molded article, and a decorating apparatus therefor. And a decorating method and apparatus.

[0002]

2. Description of the Related Art In the case of exterior tiles and the like, decoration for forming irregularities on the surface is sometimes performed. As a method of manufacturing a tile having such an uneven surface, in a method of kneading a raw material mainly composed of clay and the like with water and other additives and extruding from a die of a molding machine, a serrated shape is provided at an outlet of the die. There is a method in which members are arranged, and irregularities are formed on the surface of the molded body by using the saw-toothed member.

[0003]

The compact produced by such a conventional method has a uniform cross-sectional shape in the extrusion direction. That is, the pattern on the surface is formed of ridges or depressions that are uniform in the extrusion direction. Such a surface pattern is an artificial impression, and cannot give a rich texture such as natural tone or weathered brick tone.

[0004] An object of the present invention is to provide a method and an apparatus for decorating a surface of a molded article which overcomes such disadvantages and forms irregular irregularities on the surface of the molded article.

[0005]

According to the present invention, there is provided a method for decorating a surface of a molded article, wherein the lower end of a swingable jig disposed above the molded article is brought into contact with the upper surface of the molded article. A method of excavating an upper surface of a body, wherein the molded body is moved relative to a jig, and a swinging direction of the jig is set to a moving direction of the molded body or a direction oblique to the direction of movement. .

In addition, the decorating apparatus of the present invention comprises a conveyor for conveying a molded product, a jig disposed above the conveyor, and a substantially horizontal support shaft for swingably supporting the jig. A substantially horizontal drive shaft for rotating the support shaft around the drive shaft axis, wherein the direction of the axis of the drive shaft is orthogonal or oblique to the conveying direction of the conveyor. It is assumed that.

According to the method and the apparatus of the present invention, the lower surface of the swingable jig is brought into contact with the upper surface of the molded body which is relatively moved with respect to the jig, so that the unevenness is formed on the upper surface of the molded body. Is done. Since the jig is swingable, the irregularities on the upper surface of the formed body are random. When the jig is moved downward from above and is brought into contact with the upper surface of the molded body by rotating the support shaft around the axis of the drive shaft, the portion of the upper surface of the molded body hit by the jig is slightly deepened. As a result, a deep recess can be partially formed on the upper surface of the molded body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a perspective view showing a method and an apparatus for decorating the surface of a molded article according to the embodiment, FIG. 2 is a partially enlarged view of FIG. 1, FIG. 3 is a longitudinal sectional view showing the state of decorating the surface, and FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3.

Rotating plates 3 and 4 are coaxially fixed to opposed ends of substantially horizontal drive shafts 1 and 2 arranged coaxially. Each of the drive shafts 1 and 2 is driven to rotate around its axis by a motor (not shown).

A plurality of (four in this embodiment) support shafts 5 and stopper rods 7 are respectively provided between the rotating plates 3 and 4, and a plurality of small plate-shaped jigs are mounted on the support shafts 5. 6 is rotatably supported. In this embodiment, the jig 6
The jig 6 is provided with an insertion hole for the support shaft 5 at one end in the longitudinal direction of the jig 6, and the support shaft 5 is inserted through the insertion hole. Jig 6 supported on one support shaft 5
There is a slight gap between them. Each jig 6 is rotatable independently of the others.

Each stopper rod 7 is arranged near each support shaft 5 in parallel with the support shaft 5, and one support shaft 5 and one stopper rod 7 are paired. The distance between the pair of supporting shafts 5 and the stopper rods 7 is sufficiently small, and as shown clearly in FIGS. The stopper rod 7 can be brought into contact with the stopper rod 7. The positional relationship between the pair of supporting shafts 5 and the stopper rods 7 is as follows. That is,
The distance from the axis of the drive shafts 1 and 2 to the support shaft 5 is larger than the distance from the axis of the drive shafts 1 and 2 to the stopper rod 7. A line segment connecting the shaft centers of the drive shafts 1 and 2 and the support shaft 5 slightly precedes a line segment connecting the shaft center and the stopper rod 7 in the rotation direction of the rotary plates 3 and 4.

The molded body 8 is moved below the jig 6 by a conveyor 9. In this embodiment, the axis of the drive shafts 1 and 2 is orthogonal to the direction of conveyance of the conveyor 9. The heights of the drive shafts 1 and 2 are selected so that the lower end of the jig 6 contacts the upper surface of the molded body 8 when the jig 6 is located at the lowest position. This height is preferably adjustable by a height adjustment mechanism (not shown). The height of the conveyor 9 may be variable.

In this embodiment, the driving shafts 1, 2
Is rotated in the counterclockwise direction as indicated by an arrow θ in FIG. 3, and the conveyor 9 moves from right to left in FIG. When the drive shafts 1 and 2 rotate, the rotary plates 3 and 4 also rotate (rotate) integrally with the drive shafts 1 and 2, and the support shaft 5
Orbit (revolve) around the axis of as indicated by A → B → C → D. When the support shaft 5 rotates in this manner, the jig 6 rotates around the support shaft 5.

3A to 3B, the jig 6 is rotated counterclockwise around the support shaft 5 by being pushed by the stopper rod 7. Between B and C, the jig 6 is first pushed by the stopper rod 7 and further rotates around the support shaft 5 in a counterclockwise direction. Until the jig 6 stands upright, it is pushed by the stopper rod 7 in this manner, and the jig 6 rotates around the support shaft 5.

After the upright state, the jig 6 rotates around the support shaft 5 due to gravity, and the one end of the jig 6 contacts the stopper rod 7 as shown in a state C. At the beginning between C and D, the jig 6 is thus prevented from rotating by the stopper rod 7 and is oriented in the radial direction. Eventually, the jig 6 approaches the molded body 8, and the other end of the jig 6 contacts the molded body 8. Thereafter, the lower end of the jig 6 scratches the upper surface of the molded body 8, and the jig 6 rotates (oscillates) so that the lower end thereof fluctuates to the left side in FIG.
Is separated from the stopper rod 7.

When the support shaft 5 passes the lowermost position D, the support shaft 5 gradually rises, and the jig 6 also gradually rises. Eventually, the lower end of the jig 6 separates from the upper surface of the molded body 8,
As shown in A, the jig 6 is suspended from the support shaft 5.

As the molded body 8 moves in the V direction with the lower end of the jig 6 abutting on the upper surface of the molded body 8 as shown in FIG. 3D, the upper surface of the molded body 8 is scratched by the jig 6. Scratched irregularities occur. Since the jig 6 is rotatable around the support shaft 5 even when the lower end of the jig 6 is in contact with the upper surface of the molded body 8, the lower end of the jig 6 is pulled up and down while finely moving the upper surface of the molded body 8. As a result, irregularities whose depth and height are unevenly changed in the V direction are formed on the upper surface of the molded body 8.

In the course of the transition from the state C to the state D in FIG. 3, the lower end of the jig 6 which has turned around the axis of the drive shafts 1 and 2 together with the rotating plates 3 and 4 is beaten against the molded body 8. Hit like so. That is, when the lower end of the jig 6 first hits the upper surface of the molded body 8, the lower end of the jig 6 hits the upper surface of the molded body 8. Formed.

As described above, the conveyers 9 successively feed the compacts 8 while the drive shafts 1 and 2 are continuously rotated, so that unevenness is formed on the upper surface of each compact 8. As described above, the jig 6 can swing around the support shaft 5 while the lower end of the jig 6 is in contact with the upper surface of the molded body 8.
The irregularities are uneven and irregular in the feed direction V of the molded body 8. Further, since the jigs 6 supported on the support shaft 5 can swing independently of each other, the unevenness becomes uneven and irregular even in the direction orthogonal to the feed direction of the molded body 8.

In the above embodiment, the length of each jig 6 is equal, but the length of some or all of the jigs 6 may be different from that of other jigs. In the above embodiment, the molded body 8
Although the entire surface of the upper surface is made uneven by the jig 6, the jig 6 may be applied to only a part of the molded body 8 to make the unevenness.

In the above embodiment, the axis directions of the drive shafts 1 and 2 are orthogonal to the conveyor feed direction. However, the axis direction of the drive shafts 1 and 2 is a direction obliquely intersecting the conveyor feed direction. It may be. Although the rotating plates 3 and 4 are used in the above embodiment, an arm extending in the radial direction from the drive shafts 1 and 2 may be used instead.

In the above embodiment, the rotation range of the jig 6 is regulated by the stopper rod 7, but the stopper rod 7 may be omitted.

The shape of the jig 6 is not limited to a rectangular shape, but may be another shape. However, the length of the jig from the support shaft to one end of the jig is different from the length from the support shaft to the other end of the jig.

In the present invention, the feed speed of the conveyor 9 may be constant or may be varied over time. Further, the height of the conveyor 9 or the drive shafts 1 and 2 may be changed over time.

In the present invention, the rotational speed of the drive shafts 1 and 2 may be varied with time.

When decorating a molded article for producing a tile or the like, the molded article is preferably dried, but may be dried.

[0027]

According to the method and apparatus for decorating the surface of a molded article of the present invention, irregularities can be irregularly formed on the surface of the molded article, for example, natural stone-like or weathered brick-like emotions. It is possible to manufacture tiles and the like that are rich in water.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method and an apparatus for decorating a surface of a molded product according to an embodiment.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a longitudinal sectional view showing a decoration state of a surface.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

[Explanation of symbols]

 1, 2 drive shaft 3, 4 rotating plate 5 support shaft 6 jig 7 stopper rod 8 molded body 9 conveyor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masakatsu Kataoka 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Genji Harada 5-1-1 Koiehonmachi, Tokoname-city, Aichi Prefecture Inax Corporation (72) Inventor Masao Takeuchi 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Toyohiro Ito 131-1-1, Hojo, Tokoname-shi, Aichi Prefecture F-term (reference) 4G055 AC01 AC03 BA47 BA66 BA83

Claims (5)

[Claims] 1. A method of excavating an upper surface of a formed body by bringing a lower end of a swingable jig disposed above the formed body into contact with an upper surface of the formed body, the method comprising: A method of decorating the surface of a molded article, which is relatively moved with respect to a tool, and the swinging direction of the jig is set to a moving direction of the molded article or a direction oblique thereto. 2. The method according to claim 1, wherein a plurality of jigs are rotatably supported on a substantially horizontal support shaft. 3. A drive shaft according to claim 2, wherein a drive shaft having an axis line direction intersecting with a moving direction of the formed body is disposed above the formed body, and the support shaft is provided at an axis of the drive shaft. A method for decorating the surface of a molded article, wherein the method is a loop around a wire. 4. A stopper rod according to claim 3, wherein a stopper rod is provided substantially in parallel with the support shaft, and immediately before the lower end of the jig hits the upper surface of the molded body, the jig is brought into contact with the stopper rod to rotate around the support shaft. The method for decorating the surface of a molded article, characterized in that the jig is separated from the stopper rod and can swing after the lower end of the jig hits the upper surface of the molded article, with the rotation of the jig being restricted. 5. A conveyor for transporting a compact, a jig disposed above the conveyor, a substantially horizontal support shaft for swingably suspending the jig, and a drive shaft shaft for the support shaft. A substantially horizontal drive shaft for orbiting around the center, wherein the direction of the axis of the drive shaft is orthogonal or oblique to the conveying direction of the conveyor. apparatus.