JP2533408B2 - Roller Hearth Kiln Entry Method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an assembling method using a belt conveyor for guiding a tile before drying, which is obtained by molding a base material and glazeing it onto a roller hearth kiln. .

[Prior art]

It has been conventionally known that a plurality of rows of lining roller conveyors are arranged side by side and undried tiles are arranged and conveyed on top of them.

However, conventionally, when guiding to a roller hearth kiln, it was configured as shown in FIG.

That is, the tile a is conveyed in the aligned state a1 on the constant speed lining roller conveyor A rotating at the same speed, and before the roller hearth kiln K is entered, the 14 tiles in the horizontal direction are once aligned, The assembly method of transferring onto the roller row R was adopted.

However, in this conventional method, the end portions of the constant-velocity lining roller conveyor A are aligned in one row and placed on the porcelain roller row R at the same time. Of the porcelain rollers that are long and thin in the direction perpendicular to the direction of travel, the center of the porcelain rollers that are easily bent due to high heat in the firing zone inside the roller hearth kiln K will be hung up due to the weight of rows The core of the porcelain roller always rotates while being bent to a lower position during the rotation.

When the porcelain roller rotates while the central portion is bent low due to the weight, the tile a placed on the porcelain roller a is rotated.
As a result of vector composition, the tiles a at both ends tend to be closer to the center.

Since this defect is proportional to the amount of bending of the central portion of the porcelain roller, it is necessary to minimize the bending margin of the central portion of the porcelain roller.

As described above, since the porcelain roller is deflected by the weight of the tile a in the porcelain roller that is disposed inside the kiln and is heated to a high temperature, the tile a is not aligned in the kiln and exits. At the time of coming, the adjacent tiles stuck to each other or climbed up, which caused defective tiles during drying.

[Problems to be solved by the invention]

The present invention eliminates the disadvantages of the prior art and minimizes the deflection of the porcelain roller, so that the center of gravity of the tiles in a row does not ride on the porcelain roller at one time. Of.

[Means for solving the problem]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

At the entrance of the roller hearth kiln K, a belt conveyor is arranged in parallel for each of a plurality of tile rows to be conveyed, and the speed of each belt conveyor is set to a speed different from the speed at both ends and the central part. The tiles are arranged in a curved shape at the feeding position to the roller hearth kiln.

[Action]

The problems to be solved and the means for solving the problems of the present invention are as described above, and the operation will be described below.

According to the present invention, as shown in FIG. 1, a constant speed lining roller conveyor A is arranged in the transport section before being guided to the roller hearth kiln K, and in the part of the constant speed lining roller conveyor A, tile rows are arranged in an aligned state a1. Transported in the state,
Next, the non-uniform speed belt conveyor B is arranged, and the tile row is intentionally deformed into the curved state a2 by the non-uniform speed belt conveyor B.

Then, in the bent state a2, it is then placed on the porcelain roller row R and guided inside the roller hearth kiln K.

As a result, even when passing over a stainless steel roller or a porcelain roller arranged in the roller hearth kiln K, the curled state is not changed and the end of the roller hearth kiln K is not brought into the non-aligned state a3. It comes out of the department.

〔Example〕

The problems to be solved and the means and actions to be solved by the present invention are as described above. Next, the structure of the embodiment shown in the accompanying drawings will be described.

FIG. 1 is a plan view showing the method of assembling tiles according to the present invention, FIG. 2 is a plan view of the non-constant speed belt conveyor B and the porcelain roller 21, FIG. 3 is the same front view, and FIG. 4 is the same. FIG. 5 is a side sectional view, FIG. 5 is a side view of the same, and FIG. 6 is a plan view showing a conventional tile assembling method.

 This will be described with reference to FIG.

The conveyor unit that conveys the undried tiles to the roller hearth kiln K is composed of a constant velocity lining roller conveyor A that conveys all belt conveyors at a constant speed until just before the roller hearth kiln K.

Therefore, when the sheet is placed in the aligned state a1 at the stage of placing it on the constant velocity lining roller conveyor A, it is transported in an orderly manner up to immediately before the non-constant velocity belt conveyor B.

In the prior art, in the aligned state a1, the rows are aligned one by one with a stopper, and then directly placed on the porcelain roller row R as they are.

The present invention improves on this point, in which the non-constant speed belt conveyor B is arranged between the conventional aligned state a1 and the porcelain roller row R.

2 to 5, in the non-constant speed belt conveyor B
And the configuration of the porcelain roller row R is disclosed.

In this embodiment, as the non-constant speed belt conveyor B, 14 sets from the belt conveyor 1 to the belt conveyor 14 are arranged side by side. Each of the pair of belt conveyors 1 ... 14 is composed of three belts, and is sized such that one row of undried tiles is placed on the three belts.

The drive motors M1 to M14 are arranged in parallel for each set of the belt conveyors 1 ... The drive motor M
Since 1 and M2 cannot be placed side by side at the same position, as shown in FIGS. 1 and 2, the drive motors M1, M3, M5 ,. Drive motor M2
・ M4 ・ M6 ・ ・ are placed inside the rotation path of the belt wound around the non-constant speed belt conveyor B.

The rotational speeds of the drive motors M1 to M14 are set differently, and in the case of a curve having a convex central portion as in the embodiment shown in FIG. 1, the drive motors M7 and M8 rotate. The number of rotations of the drive motors M1 and M14 is the smallest. The rotational speeds of the drive motors M7 to M1 are set to be different from each other so that the rotational speeds of the drive motors M7 to M1 gradually decrease toward both ends. As a result, the non-dried tiles aligned by the constant velocity lining roller conveyor A and guided to the non-constant velocity belt conveyor B are separated by 14 sets of different belt conveyors 1 ... 14 on the non-constant velocity belt conveyor B. Since the difference in transport speed gradually arises, as shown in FIG. 1, the center gradually becomes a convex curved state.

However, the curved shape may have a state in which both ends are fast and the center is slow, and in this case, the center is in the curved state of the concave portion.

In FIGS. 4 and 5, 22 is a belt tension pulley of the belt conveyor 1, and 23 is a drive motor M1 ...
A driving pulley driven by M14 and a driven pulley 24.

The porcelain roller row R is configured by arranging six porcelain rollers 21 in parallel.
The upper surface level of the belt conveyor 1 is formed on the same surface. Each of the porcelain rollers 21 has a sprocket at its end, and is driven at a constant speed by another drive motor and a chain of chains.

However, in order to be able to place all 14 rows of wet tiles, the total length is long with respect to the diameter ratio, and 14 pieces of wet tiles are placed on this thin and long porcelain roller 21. Are placed at the same time.

Since the porcelain roller 21 is arranged outside the roller hearth kiln K, it does not bend due to the weight of the tile a, but in the firing zone inside the roller hearth kiln K, the porcelain roller softened by high heat is When the tiles a are placed on the book in a concentrated manner, the tiles continue to rotate with the center bent.

That is, in the roller hearth kiln K, the porcelain roller, which is easily bent due to high heat, continues to rotate in a state of being bent downward, so that the tiles a on the tile a gather in the center and move freely.

In the present invention, two of the 14 sheets are placed in order on the rotating porcelain roller 21 in the curved assembled state. Since only a slight amount of bending occurs, a linear rotation of the roller is obtained, and the assembled state of the roller is maintained inside the roller hearth kiln K, and the roller hearth kiln K exits as it is. It can be transported.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

First, the tile is the part of the non-constant speed belt conveyor B,
It is placed on the porcelain roller 21 in a curved shape in which the central part projects and both ends recede, or both ends project and the central part recedes, so it is subsequently conveyed to the inside of the roller hearth kiln K, Even when placed on a porcelain roller that is located inside the firing zone and is easily bent by high heat, not all tiles in a horizontal row are placed at once but several tiles on the left and right. Since the porcelain rollers are placed in order, the porcelain roller, which is easily bent, does not have a large bending weight, and the bending of the porcelain roller in the roller hearth kiln K can be eliminated.

Secondly, since the high heat porcelain roller in the roller hearth kiln K does not bend, it is in the same state as the state initially put in the roller hearth kiln K as a curved bend group,
It is possible to pass through the Roller Hearth Kiln K with a certain posture.

Therefore, it was possible to reduce the incidence of defective products such as sticking of adjacent tiles and riding up.

Third, inside the Roller Hearth Kiln K,
Since the bending posture does not change, the space between adjacent tiles can be narrowed, so it was conventionally 19 minutes per minute.
It was possible to increase the number from about 0 sheets to about 220 sheets.

[Brief description of drawings]

FIG. 1 is a plan view showing a method of assembling tiles according to the present invention, and FIG.
The figure is a plan view of the non-constant speed belt conveyor B and the porcelain roller 21, FIG. 3 is the same front view, FIG. 4 is the same side sectional view, FIG. 5 is the same side view, and FIG. 6 is a conventional tile. It is a top view which shows the assembly method of. A: Constant velocity lining roller conveyor B: Non-uniform velocity belt conveyor R: Porcelain roller row a1: Aligned undried tile a2: Curved undried tile a3: Unaligned undried tile 1 to 14 …… Belt conveyor M1 to M14 …… Drive motor 21 …… Porcelain roller

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location F16C 13/00 F27D 3/06 A F27D 3/06 B28B 11/00 Z

Claims (1)

(57) [Claims] 1. A belt conveyor is provided in parallel at each entrance of a roller hearth kiln for each of a plurality of tile rows to be conveyed, and the speed of each belt conveyor is different from the speed at both ends and the center. The roller hearth kiln assembly method is characterized in that the tiles are arranged in a curved shape at the feeding position to the roller hearth kiln.