JPH101379A - Method for glazing roof tile and glazing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the roughening of glazed surfaces, dotty patterns and the change in color tones and to improve the quality of roof tiles by applying glaze on the white grounds hung and supported by tile clamping hangers, then executing special operation. SOLUTION: The glaze is applied by a glaze applying device 5 on the blanks W hung and supported by the tile clamping hangers 4. The front layers W3 of the glaze layers at the bottom end surfaces W2 of the blanks W are pressed by the soft body 7 of a freely liftably disposed pressing body 8 in the position P1 where is the transporting downstream side of the applying device 5, and the front layer side of the glaze layers by the glaze applied on the blanks W attains a dry state and the inner layer side thereof attains a half-dry state having the remaining flow property. Namely, the glaze layers in the half dry state are internally pushed and spread by the soft body 7, by which the film thickness of the glaze layers is made uniform.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for glazing a roof tile for applying a glaze to a white background of a clay tile.

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing a roof tile, which is a glaze tile that is subjected to glaze on the surface and fired, after manufacturing a white background, the white background is suspended with a tile holding hanger, and a glaze coating device is used. The surface is sprayed or sprinkled and glazed.

[0003] However, the glaze which has been glazed is dried while being transferred to a firing step, and during this time, the glaze having fluidity flows toward the lower end side of the white background, and in particular, flows. If the form of a white background that is suspended and supported by a tile holding hanger is on a roof tile, on the head end face or on the eaves tile, on the head hanging surface on the head side, it will be dried and solidified in places in some places. Due to this, the thickness of the dried glaze layer at such a location becomes uneven, and the glaze surface becomes rough or irregular at the time of firing, which frequently causes a defect that reduces the commercial value. .

[0004]

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for glazing a roof tile which eliminates roughening of the glaze surface, spots and changes in color to obtain a roof tile which is a high quality glaze tile. Is to be provided.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, such as problems caused by uneven thickness of a dried glaze layer. In this state, a glaze method and a glaze apparatus for roof tiles are provided in which a glaze having fluidity on the inner layer side is spread inside by pressing such a glaze layer to make the film thickness uniform, thereby solving the above-mentioned drawbacks. It's a neat thing.

As a means for glazing the roof tile, a tile grip hanger to be transported and controlled is provided, and glaze is applied by a glaze coating device to a white background suspended and supported by the tile grip hanger.

[0007] Further, the lower end face of the white background is located below the position where the surface side of the glaze layer applied to the white background on the transport path of the tile holding hanger is in a dry state and the inner layer side is in a semi-dry state where fluidity remains. Is provided so as to be able to move up and down.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. First, as a glazing device 1 used in a method for glazing a roof tile according to the present invention, a trolley conveyor 2 is bent vertically and horizontally. A number of tile holding hangers 4 are attached to the circulating member 3 which is a possible endless chain at predetermined pitches,
Spray glaze on the white background W to be suspended and supported,
A glaze coating device 5 for pouring, dipping, and the like is provided.

The tile holding hanger 4 is a white background W
Are provided with gripping pieces 6, 6a for gripping the upper side W1 on which the glaze is not applied.

[0010] Further, on the downstream side of the transport path in the trolley conveyor 2 for controlling the transport of the white background W coated with the glaze by the glaze coating device 5 to the baking process, the surface layer side of the applied glaze layer becomes substantially dry and The position where the fluidity remains in the inner layer and becomes a semi-dry state is defined as a stop position P1.
Pressing the soft body 7 such as sponge, rubber or the like at the front end below the stop position P1 opposite to the lower end surface which is the head side W2 of the white background W suspended by the tile holding hanger 4 The body 8 is provided so as to be able to move up and down by means of raising and lowering means comprising a cylinder 9.

Next, as a method of glazing a roof tile according to the present invention, a head side W2 of a white background W such as a cross tile or an eave tile is formed as a lower part and an upper side W1 is formed as a gripping piece of a tile gripping hanger 4. 6, 6a
In the process of passing the glaze coater 5 while the white ground W is suspended and supported by the trolley conveyor 2, the glaze is sprinkled over the white ground W, and The lower part, which is W2, is soaked and the required surface of the white background W is coated with glaze.

When the white background W coated with the glaze is conveyed and reaches the stop position P1, the white background W is detected by a sensor (not shown), and the trolley conveyor 2 is stopped and controlled. 4 is stopped.

After that, the pressing body 8 is raised by operating the cylinder 9 serving as a lifting / lowering means, and the soft body 7 at the tip of the pressing body 8 is suspended under the roof gripping hanger 4 and supported under the head W2 of the white background W. By pressing the end surface a desired number of times, the state of the lower end surface of the white background W is a position where the glaze layer is in a semi-dry state. When the form of the white background W is on the roof tile, the end face of the head side W2, or on the eave tile, the form of the white background W is the head side W2.
The thickness of the glaze layer on the head hanging surface W3 is made uniform.

Thereafter, the white background W is generally placed upright on the shelf 10 with the front side W2 of the white background W facing upward and fired by a firing furnace. In such firing, the upper end face of the head side W2 is used. Since the film thickness of the glaze layer is uniform, it is possible to prevent problems such as roughening, spotting, and change in color tone during firing.

[0015]

In summary, according to the present invention, a glaze is applied to a white background W suspended and supported by a tile holding hanger 4, and the surface of the glaze layer formed by the glaze is in a dry state and the fluidity remains on the inner layer side. At the dry position, the surface of the glaze layer at the lower end surface of the white background W is pressed, so that the glaze on the inner layer having fluidity is spread out inside, so that the thickness of the glaze layer at such locations can be easily uniformized. This makes it possible to prevent glaze surface roughening, spots, and changes in color tone, which are problems that have conventionally occurred during firing, and to obtain high-quality roof tiles. The practical effect is extremely large, for example, it is possible to cope with the addition of simple equipment for providing a pressing means at a semi-dry position of the glaze layer without making any improvement to the existing equipment for controlling the transfer of the tile holding hanger 4.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a glaze apparatus used in a method for glazing a roof tile according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing a non-uniform state of a film thickness of a glaze layer on a lower end surface on a head side of a white background.

FIG. 3 is a diagram showing a state in which the glaze layer in the non-uniform state is made uniform.

FIG. 4 is a perspective view showing a state in which a white background that is an eaves tile is placed on a shelf board.

[Explanation of symbols]

 4 Tile holding hanger W White background

Claims (2)

[Claims] 1. A glaze is applied to a white background suspended and supported by a tile holding hanger, and a surface of the glaze layer formed by the glaze is in a dry state and a fluid state is left on the inner layer in a semi-dry state. A method for glazing a roof tile, comprising pressing a surface layer of a glaze layer on a lower end surface of a white background. 2. A means for controlling the transfer of the tile gripping hanger is provided, and a glaze coating device for coating the glaze on a white background suspended and supported by the tile gripping hanger is provided. A pressing body that presses the lower end surface of the white background is provided below the position where the surface side of the glaze layer applied to the white background is in a dry state and the inner layer side is in a semi-dry state where fluidity remains. Roof tile glazing equipment.