JPH06300464A - Ceramic chain - Google Patents

Abstract

PURPOSE:To prevent the occurrence of variations in chemical reaction or quality by a method wherein a square tube provided passing through a cylindrical tube is made to rotate by the rotation of a circular lid so as to retain the materials which are baked while they are being moved in a continuous kiln always in a mixed state. CONSTITUTION:At the outside of the entrance side of a continuous kiln, after a circular lid 4 forming the elements of a ceramic chain is removed and the materials to be baked are charged into a square tube 3, the circular lid 4 is placed back on a cylindrical tube 2 to retain the square tube 3. When the ceramic chain is brought in the continuous kiln and moved along its path, each of the circular lids 4 placed on the cylindrical tube 2 via a connecting plate 5 connected to this tube rolls on a hearth. In this way each of the square tubes 3 into which a projection 4a of each circular lid 4 is fitted is rotated in the circumferential direction in order that the materials in each square tube 3 may continuously be mixed together by the rotation of the square tube 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic chain used for carrying a material to be fired.

[0002]

2. Description of the Related Art Conventionally, when firing small ceramic parts such as ceramic capacitors or ceramic raw materials, a well-known tunnel type continuous firing furnace (not shown) has been used. Among such continuous firing furnaces, there is one configured by incorporating a belt conveyor-shaped ceramic chain 20 as shown in the assembled state in the plan view of FIG. 5 and the side view of FIG.

The ceramic chain 20 is for firing the material S to be fired by continuously moving it in the continuous firing furnace while conveying the material S to be fired placed on the ceramic chain 20. It is configured by continuously combining a large number of two kinds of chain members 21 and 22 each made of a material and having a square shape in a plan view so as to have an endless shape. That is, each of the chain members 21 and 22 has a side view shape as shown in FIGS. 7A and 7B, and in both of them, the projection 21 a formed on the chain member 21 has By being fitted into the recess 22a, they are connected to each other in a bendable state.

Therefore, a small ceramic part or a ceramic raw material as the material to be fired S is directly placed on the ceramic chain 20 as shown in FIG.
Alternatively, it is stored in a box-shaped box 23 made of a ceramic material and then placed on the ceramic chain 20 and fired while moving in the furnace.

[0005]

By the way, when performing the firing operation using the ceramic chain 20 having the above-mentioned conventional structure, the ceramic chain 20 and the ceramic chain 20 which are in contact with each other are placed on the firing. A chemical reaction occurs between the material to be fired S and the box 23, and these may be seized. When the baking target S is stored in the box 23 and baked, the baking target S is baked by moving the boxes 23 without changing the mounting positions of the boxes 23, resulting in the same box. Storage position and box in 23
The heating state may differ depending on the mounting position of each other, which may cause variation in quality after firing. Furthermore, since the box 23 having a large heat capacity is used, there is a disadvantage that the thermal efficiency in the continuous firing furnace cannot be improved.

The present invention was devised in view of these inconveniences, and it is possible to prevent the chemical reaction and quality variation of the object to be fired, and to improve the thermal efficiency in the continuous firing furnace. The purpose is to provide ceramic chains.

[0007]

A ceramic chain according to the present invention continuously moves in a furnace of a continuous firing furnace while transporting an object to be fired, and at least both ends are for attaching a connecting plate. A cylindrical tube with a small-diameter part formed, a rectangular tube that stores the material to be fired and inserts it into the cylindrical tube, and a circular lid that rolls on the hearth after being applied to each open end surface of the cylindrical tube. It is provided with a connecting plate that is fitted onto the small diameter portions of the cylindrical tubes that are arranged adjacent to each other along the direction to connect the ends of the cylindrical tubes to each other. The present invention is characterized in that a rectangular projection is formed which is fitted into the opening end of the tubular tube and holds the tubular tube.

[0008]

According to the above structure, each of the circular lids applied to each of the cylindrical pipes connected by the connecting plate moves in the furnace while rolling on the hearth, and at this time, the circular lids Each of the rectangular tube having the projection formed on the inner surface side fitted therein is rotated in the circumferential direction. Therefore, the products to be fired stored in each rectangular tube are mixed as the rectangular tubes rotate, and as a result, the objects to be baked are always in a mixed state or between the objects to be fired and the rectangular tube. No chemical reaction or quality variation will occur. Furthermore, since there is no object such as a box having a large heat capacity in the furnace of the continuous firing furnace configured by adopting the present invention, the thermal efficiency in the continuous firing furnace can be improved. .

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view showing an element portion of a ceramic chain according to this embodiment, FIG. 2 is a partially cutaway plan view showing an assembled state of the ceramic chain, and FIG. 3 is a partially cutaway front view thereof. Reference numeral 1 in these figures is a ceramic chain.

The ceramic chain 1 is for continuously moving in a furnace of a continuous firing furnace (not shown) while conveying a material S to be fired such as small ceramic parts and ceramic raw materials. And mullite, a cylindrical tube made of a ceramic material such as silicon carbide (SiC), a square tube 3, a circular lid 4 and a connecting plate 5 are formed by combining them with each other. . The arrow B in FIG. 2 indicates the moving direction of the ceramic chain 1.

First, the cylindrical tube 2 is manufactured as a linear shape having an outer diameter and an inner diameter of about 50 mm and 40 mm, respectively, and having a predetermined length adapted to the width dimension of the furnace of the continuous firing furnace. A small-diameter portion 2a is formed at a predetermined position on both ends near the opening end face for attaching the connecting plates 5, each of which is a set of two sheets. Each of the small diameter portions 2a is formed by subjecting the outer peripheral surface of the cylindrical tube 2 to groove processing having a width of 12 mm and a depth of 1 mm. The rectangular tube 3 has a diagonal length of about 38 mm, which is smaller than the inner diameter of the cylindrical tube 2, and
The rectangular tube 3 is made into a linear shape having substantially the same overall length as the cylindrical tube 2, and the rectangular tube 3 is inserted into the cylindrical tube 2 after accommodating the small ceramic parts or the ceramic raw material which is the object S to be fired. It is like this.

Further, the circular lid 4 is formed as a plate having a predetermined thickness having an outer diameter of about 70 mm, and its inner surface side is adapted to be brought into contact with each of the open end surfaces of the cylindrical tube 2. Then, at a substantially central position on the inner surface side of the circular lid 4, a rectangular protrusion 4a to be fitted into each of the open ends of the rectangular tube 3 is formed. Then, after the pair of circular lids 4 are arranged so as to face each other so that the protrusions 4a thereof face each other, and the inner surface side of each circular lid 4 is abutted against each of the opening end surfaces of the cylindrical tube 2, the corners inserted through the cylindrical tube 2 The projections 4a are fitted into the respective open ends located on both sides of the tubular tube 3, and the rectangular tubular tube 3 is held by the pair of circular lids 4 via the projections 4a. .

At this time, due to the relationship between the inner diameter and the diagonal length, the cylindrical tube 2 and the cylindrical tube 3 which any portion on the inner peripheral surface must always come into contact with the outer peripheral corner portion of the rectangular tube 3. It is supported by the circular lid 4 via, and the outer peripheral edge of the circular lid 4 at this time is located outside the outer peripheral surface of the cylindrical tube 2. Furthermore, these circular lids 4 are only applied to the cylindrical tube 2 and are not subject to any mechanical restraint by the cylindrical tube 2.
As a result of maintaining the rotatable state with respect to the cylindrical tube 2, each of the circular lids 4 has a ceramic chain 1
Can be rolled on the hearth 7 of the continuous firing furnace.

By the way, when such a structure is adopted, it is conceivable that the circular lid 4 may come off from the open end face of the cylindrical tube 2 moving in the furnace of the continuous firing furnace. Therefore, in the furnace of the continuous firing furnace in this embodiment, as shown in FIGS. 2 and 3, a guide member 8 for preventing the circular lid 4 that is not restrained from coming off is provided in the moving direction of the ceramic chain 1. Is installed along. In this embodiment, the circular lid 4 applied to the cylindrical tube 2 is the hearth 7.
Although it is supposed to roll over, it is not limited to this, and for example, even if a guide rail (not shown) for rolling the circular lid 4 is attached in the furnace of the continuous firing furnace, Of course good things.

Further, each of the connecting plates 5 is formed as a rectangular flat plate having a thickness of about 5.5 mm, and has a diameter of about 51 mm, which is larger than the outer diameter of the cylindrical tube 2, at both ends along the long side direction. Through holes 5a each having a diameter are formed after positioning. Each of the connecting plates 5 has a through hole 5 on the side of an end different from each other.
In addition to being combined as a set of two pieces a matching each other,
In the connecting plate 5 which is a set of two sheets, a pair of matched through holes 5a pass through the end portions of the respective cylindrical tubes 2 and are fitted on the small diameter portions 2a in common.

Therefore, if two pairs of the connecting plates 5 are fitted onto the small-diameter portions 2a of the cylindrical tubes 2 arranged adjacent to each other along the moving direction B, the end portions of these cylindrical tubes 2 are fitted. The parts are sequentially connected via the connecting plate 5 in a state of being positioned corresponding to the formation position of the through hole 5a. Then, as a result of connecting a large number of cylindrical tubes 2 arranged adjacent to each other along the moving direction B by the connecting plate 5, the endless ceramic chain 1 that continuously moves in the furnace of the continuous firing furnace is configured. It will be.

Next, the operation and action of this embodiment will be described.

First, outside the inlet side of the continuous firing furnace,
After removing the circular lid 4 which constitutes the element part of the ceramic chain 1 and storing the to-be-sintered object S in the rectangular tube 3, the circular lid 4 is again applied to the cylindrical tube 2 to hold the rectangular tube 3.
Then, when the ceramic chain 1 configured by combining these element parts with each other is pulled into the furnace of the continuous firing furnace and then moved along the moving direction B, a cylinder connected through the connecting plate 5 Each of the circular lids 4 applied to each of the tubes 2 rolls on the hearth 7.

Then, at this time, each of the rectangular tube 3 into which the projection 4a of each circular lid 4 is fitted is rotated in the circumferential direction, and the object contained in each rectangular tube 3 is rotated. The fired product S is continuously mixed with the rotation of the rectangular tube 3. Then, the circular lid 4 is removed from the cylindrical tube 2 of the element part that has passed through the furnace and moved to the outside of the outlet side of the continuous firing furnace, and from the rectangular tube 3 that has passed through the cylindrical tube 2. The object S to be baked that has been baked is collected.

In this embodiment, the small diameter portion 2a is formed only at both ends of the cylindrical pipe 2, and the small diameter portions 2a are connected by the connecting plate 5 to form the ceramic chain 1. For example, you may comprise the ceramic chain 10 as shown in the modification of FIG.
That is, in this ceramic chain 10, the small diameter portions 2a are also formed at the central positions along the longitudinal direction of the respective cylindrical pipes 2 that form the element portion, and these small diameter portions 2a are also similar to each other at both ends. , Are connected to each other via a connecting plate 5. When such a configuration is adopted, the total length of each of the cylindrical tubes 2 and the rectangular tube 3 can be increased, and the processing amount of the material to be fired S can be increased accordingly.

[0022]

As described above, according to the ceramic chain of the present invention, the rectangular tube inserted through the cylindrical tube rotates with the rolling of the circular lid. The objects to be fired stored in the tube are mixed as the rectangular tube rotates. Therefore, the objects to be fired while moving in the furnace of the continuous firing furnace are always mixed, and as a result, the objects to be fired in a mixed state or between the objects to be fired and the rectangular tube are mixed. No chemical reaction or quality variation will occur. Also,
In the furnace of the continuous firing furnace configured by adopting the present invention,
Since there is no object having a large heat capacity like the box in the conventional example, there is an effect that the thermal efficiency in the continuous firing furnace can be improved at the same time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an element portion of a ceramic chain according to this embodiment.

FIG. 2 is a partially cutaway plan view showing an assembled state of the ceramic chain.

FIG. 3 is a partially cutaway front view thereof.

FIG. 4 is a plan view showing an assembled state of a ceramic chain according to a modified example.

FIG. 5 is a plan view showing an assembled state of a ceramic chain according to a conventional example.

FIG. 6 is a side view thereof.

FIG. 7 is a side view showing a chain member according to a conventional example.

[Explanation of symbols]

 1 Ceramic Chain 2 Cylindrical Tube 2a Small Diameter Section 3 Square Cylindrical Tube 4 Circular Lid 4a Projection 5 Connecting Plate 7 Hearth S S

Claims (1)

[Claims] 1. A ceramic chain which continuously moves in a furnace of a continuous firing furnace while conveying a material to be fired (S), wherein a small diameter portion (2a) for attaching a connecting plate is formed at least at both ends. A cylindrical tube (2), a rectangular tube (3) for accommodating an object to be fired (S) and inserting the cylindrical tube (2), and a cylindrical tube (2)
The hearth (7) after being applied to each of the open end faces of the
The circular lid (4) rolling on the top and the small diameter portion (2a) of each of the cylindrical pipes (2) arranged adjacent to each other along the moving direction are externally fitted to connect the ends of the cylindrical pipe (2) to each other. And a connecting plate (5) for connecting the rectangular tube (3) at a substantially central position on the inner surface side of the circular lid (4).
A ceramic chain having a square protrusion (4a) which is fitted into the open end of the and holds the rectangular tube (3).