JP2979371B2 - Discharge device for overturned sintering pellets in a conveyor for transferring cylindrical sintered pellets to a polishing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to pellets used in a cladding tube of a nuclear fuel rod, which are used after completion of sintering and transferred to a polishing apparatus such as a centerless polishing machine, where the pellets are used. The present invention relates to a conveying device used when polishing an outer peripheral surface to finish it to a predetermined size. When the cylindrical sintered pellets are not conveyed in an upright state and fall down unintentionally by the conveying device, this is automatically performed. The present invention relates to an apparatus for discharging overturned sintering pellets which is discharged from a conveying line and is intended to prevent clogging of the transfer of the sintering pellets at the entrance of the polishing apparatus.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 to 8, a sintering pellet conveying apparatus has been described. As shown in FIG. 4 to FIG. A plate 1 and a supply disk 2 mounted on the plate 1 are provided, and the supply disk 2 has a mounting peripheral surface 2b formed to be inclined from the rotation axis A toward the outer peripheral edge 2a. It is formed upward, and is configured to be rotatable in the direction of arrow R around the rotation shaft 2c by a drive source (not shown).

[0003] The sintering pellets P, which are carried on the supply mounting plate 1 in an upright state, are driven from the outer peripheral edge 2a to the mounting peripheral surface 2b by driving and rotating the supply disk 2. In this case, a control guide 3 for regulating the sintering pellets P in a line is provided as clearly shown in FIGS. As shown in FIG. 5, the control guide 3 shown is provided with a support arm 3a fixedly extended in place and provided at the tip thereof on the same axis as the rotation axis A. Attachment 3b
And a brush 3c extending from the attachment 3b in a curved shape in the radial direction of the supply disk 2.

Further, on the mounting peripheral surface 2b of the supply disk 2, an outer skirt portion 2d is provided around the rotation axis A of the supply disk 2 in an arc shape so as to surround the supply disk 2 as described above. A tall receiving surface 4 is formed to support the sintered pellets P continuously transferred in a row by the rotation of the disk 2 so as not to be tilted outward. In the illustrated example, a cover 4a is provided above the supply disk 2. The tall receiving wall surface 4 is bent downward from the inner peripheral end of the cover 4a.
At this time, as shown in FIG.
Means that the outer peripheral surface P 'of the sintered pellet P erected on the mounting peripheral surface 2b is directed toward the upper edge so that the outer peripheral surface P' just comes into contact with the rotational axis A.
It is inclined in the direction away from.

Next, the transfer-sintered pellet P is not advanced along the tall receiving wall 4 as it is, but as shown in FIG.
Guide path 5 for turning toward outer peripheral edge 2a
Therefore, in the illustrated example, the cover 4a is notched, and an impact-redirecting projection 5a is provided on the tall receiving wall surface 4 'of the divided cover 4a' on the advancing side. As shown in FIG. 6, the introduction guide path 5 is fixed to the standing wall 5 on the cover 4a side.
b, the standing wall 5b 'on the side of the cover 4a', and the above-mentioned impact-redirecting projection 5a and the mounting peripheral surface 2b of the supply disk 2.
Is defined by

A transport conveyor 6 is disposed below the outer peripheral edge 2a of the supply disk 2 in the above-mentioned introduction guide path 5, and the outer peripheral edge 2a and the transport conveyor 6 generated by this are provided. From the standing state, the sintered pellets P that have entered the introduction guideway 5
As shown in FIG. 7A, the sintered pellet P rolls over in the traveling direction D of the conveyor 6 and enters the polishing device 7 such as a centerless polishing machine as shown in FIG. in, that the outer circumferential surface P 'is polished, and than completing pellets P ₁ was finished into a predetermined size is obtained, the guide plate in the figure 6a is provided upright in the width direction lateral conveyor 6 Is shown.

[0007]

In the case of the above-described conventional transfer apparatus, when the sintered pellets P are in an upright state and are transferred from the supply mounting plate 1 to the mounting peripheral surface 2b of the supply disk 2, etc. It falls down and is transported by the supply disk in the lying state, and falls on the conveyor from the introduction guideway.In this case, when the sintering pellets on the side are transferred to the conveyor, the pellets on the conveyor are shifted due to the paragraph difference. In some cases, the standing sintered pellets P are clogged at the entrance of the polishing apparatus 7 and this type of polishing process is stopped. I have.

In view of the above-mentioned defects of the conventional polishing apparatus, the present invention focuses on the overturned sintered pellets in the supply disk, and interposes an appropriate discharge device during the transfer by the supply disk. By doing so, automatically
With high reliability, the sintering pellets are discharged from the supply disk, thereby assuring a stable operation of the polishing apparatus and thus improving the efficiency of such a conveying apparatus. That is the purpose.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a supply mounting plate for loading cylindrical sintered pellets in an upright state, and a mounting plate mounted on the supply mounting plate for externally moving from a rotation axis. The mounting peripheral surface formed in a tilted state toward the peripheral portion is mounted on the supply disk formed upward and rotatably driven, and from the outer peripheral edge of the rotating supply disk from the supply mounting plate. A control guide for regulating the sintered pellets transferred on the peripheral surface in an upright state, in a row, and an outer skirt portion of the mounting peripheral surface, are provided in an arc around the rotation axis of the supply disk. A tall receiving wall for receiving sintered pellets continuously transferred in a row by the rotation of the supply disk, an introduction guideway for turning these transferred sintered pellets toward the outer peripheral edge of the supply disk, Transport conveyor mounted on the outer periphery of the supply disk in the guideway, The paragraphs difference of the outer circumferential edge portion and the transfer conveyor of the serial supply disk, sintered pellets TatsuSo state at the outer edge, on the conveyor, and roll toward the traveling direction,
In the transfer device in which the sintered pellets in the overturned state are successively transferred to the polishing device, the tall receiving wall is cut off on the front side of the introduction guide path, and the short receiving wall is formed at the missing portion. From the top edge of the low-profile receiving wall, forming a falling descent slope for downward movement that tilts down in the radial direction of the supply disk, and adjusts the height of the low-profile receiving wall to The sintering pellets, which are in a standing state, are prevented from sliding down from the mounting peripheral surface, and the sintered pellets which have been transferred to the mounting peripheral surface in a sideways state are rotated by the rotation of the supply disk. Overturned sintering pellets in a conveying device for transferring cylindrical sintered pellets to a polishing device, wherein the falling slope for falling is selected so as to be capable of rolling down over a low receiving wall surface. To provide a discharge device for

[0010]

According to the present invention, the tall receiving wall provided on the supply disk of the conventional transfer device is cut off on the front side of the introduction guideway, and the tall receiving wall is provided at the missing portion. Instead, the lower receiving wall is erected, and a falling / falling slope for falling is formed from the upper edge of the receiving wall in the radial direction of the supply disk, and the supply disk has a mounting peripheral surface. Gradient and
The height from the mounting peripheral surface of the short receiving wall, which is influenced by the rotational peripheral speed of the supply disk and the weight of the sintered pellets, is appropriately selected.

Therefore, the sintered pellets, which are arranged in a line as described above, are erected on the mounting peripheral surface, are slid in contact with the tall receiving wall surface and are transferred by the operation of the supply disk, according to the present invention. Is transferred without sliding down on the mounting peripheral surface while slidingly contacting the short receiving wall surface of the discharge device according to (1). On the other hand, the sintering pellets that have fallen sideways on the mounting peripheral surface have their outer peripheral surface resting on the mounting peripheral surface and sliding on the tall receiving wall surface while being arranged in the chord direction of the supply disk. The sintering pellets, which are easily rolled when they are transferred to the place where the short receiving wall is erected, are affected by the centrifugal force caused by the rotation of the supply disk. In response to this, the vehicle climbs over the step between the short receiving wall and the mounting surface, reaches the falling slope for falling, and descends while rolling. It will be automatically removed from the line. Until the sintered pellets are arranged in a line along the tall receiving wall, pressing force may be applied to the sintered pellets outward,
With the arrangement of the tall receiving wall, the sintered pellets do not fall to the outside and the sintered pellets are transferred to the low receiving wall, and the row of the sintered pellets is completed. Will be.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in FIGS.
The configuration is the same as the configuration disclosed in FIGS. 4 to 8, and the same members are denoted by the same reference numerals. As understood from FIGS. 1 and 3, the discharge device added to the above-mentioned conventional transport device of the present invention is provided on the above-mentioned tall receiving wall 4 on the front side reaching the introduction guide path 5. The height of the supply disk 2 is lowered from the upper edge of the low-profile receiving wall 8 in the radial direction of the supply disk 2 from the upper edge of the low-profile receiving wall 8 in place of the high-level receiving wall 4 at the missing portion. The falling slope 8a is formed.

The length of the falling slope 8a is, of course, greater than the height of the sintered pellet P. In the illustrated example, the side faces 4b, 4c of the paragraphs 4b, 4c face each other so that the cover 4a is partially dropped. The falling downfall slope 8a for falling is laid in the meantime, and the short receiving wall 8 is formed.
Are connected in an arc shape in a state flush with the tall receiving wall 4. Further, a drop port 8c for the sintered pellet P is opened between the terminal edge surface 8b of the falling falling slope 8a for dropping and the outer side surface 4d of the cover 4a connecting the side surfaces 4b and 4c of the cover 4a. 8C in (C) indicates a storage container for the sintered pellets P.

Here, the setting position of the above-described low receiving wall 8 is preferably determined as close to the introduction guideway 5 as possible. The reason for this is that the supply peripheral surface 2 of the supply disk 2
b, the sintering pellets P in an upright state are rearranged by the control guide 3 from a plurality of rows into one row. The pellet P may be pushed toward the tall receiving wall surface 4 side. In this case, if the tall receiving wall surface 8 instead of the tall receiving wall surface 4 is provided, The sintered pellets P fall over the short receiving wall 8 to the outside, and therefore, it is desirable to provide the sintered pellets P near the introduction guide path 5 where the alignment is completed.

Therefore, in the case of the discharge device having the above structure, if there is a sintered pellet P lying on the supply disk 2 and lying down, it is transferred along the tall receiving wall 4 while the When you come to the low receiving wall 8,
The outer peripheral surface P 'of the sintered pellet P is on the mounting peripheral surface 2b and is in contact with the slightly lower receiving wall 8 which is slightly higher than the outer peripheral surface P'. The sintering pellets P in an easily movable state are rolled, and ride on the falling / falling slope 8a for falling from the low-profile receiving wall 8, and FIG.
As shown in (B) and (C), the falling down slope 8a for falling motion falls down. In the illustrated example, the sintered pellets P fall from the drop port 8c and are stored in the storage container 8d. Therefore, the pellets P do not directly enter the polishing apparatus 7 from the conveyor 6 described above.

[0016]

As described above, according to the present invention, the discharge device is attached to the conventional transfer device, so that the sintering pellets lying on the supply disk can be automatically transferred out of the transfer line. Can be rolled and released, and of course, the sintered pellets in the upright state are not released out of the transport line. Since the operation can be stopped with high reliability and the operation is not stopped due to unintended clogging of the polishing apparatus, the efficiency of the transfer apparatus can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a transport device provided with a discharge device according to the present invention.

FIG. 2 (A) is a schematic vertical sectional view taken along line AA of FIG. 1,
(B) is a schematic vertical sectional view showing the relationship between the sintered pellets in the upright state and the short receiving wall surface, and (C) shows the relationship between the sintered pellets in the lying down state and the short receiving wall surface. FIG.

FIG. 3 is a schematic perspective view of a transport device provided with a discharge device according to the present invention.

FIG. 4 is a schematic plan view showing a conventional discharge device.

FIG. 5 is a schematic side view of the discharge device with a part cut away.

FIG. 6 is a schematic perspective view of a partially cut-out portion clearly showing an introduction guide path of the discharge device.

FIG. 7A is a schematic side view showing a state where sintering pellets in a standing state in a supply disk of the discharge device are transferred to a conveyor, and FIG. 7B is a side view of the supply disk in the same state; FIG. 2 is a schematic side view showing a state in which the sintered pellets are transferred to a conveyor.

FIG. 8 is a schematic perspective view showing a progress state of sintered pellets conveyed to the polishing apparatus in a rollover state by the conveyance conveyor of the discharge device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 supply mounting plate 2 supply disk 2a outer peripheral edge 2b mounting peripheral surface 3 control guide 4 tall receiving wall 5 introduction guide path 6 transport conveyor 7 polishing device 8 low receiving wall 8a falling discharge slope A Rotary axis P Sintered pellet

Claims (1)

(57) [Claims] 1. A supply mounting plate for carrying cylindrical sintered pellets in an upright state, and a mounting peripheral surface mounted on the supply mounting plate and inclined downward from an axis of rotation toward an outer peripheral edge. Is a row of supply discs that are rotatably driven upward, and sintered pellets transferred from the supply mounting plate to the mounting peripheral surface in an upright state from the outer peripheral edge of the rotating supply disc in a row. And a control guide element for regulating the sintering pellets, which are arranged around the rotation axis of the supply disk in an arc around the outer skirt of the mounting peripheral surface and are continuously transferred in a line by the rotation of the supply disk. A tall receiving wall for receiving, an introduction guideway for turning these transfer sintered pellets toward the outer peripheral edge of the supply disk, and a conveyor mounted on the outer peripheral edge of the supply disk in the introduction guideway. With the paragraph difference between the outer peripheral edge of the supply disk and the conveyor In a transport device in which the sintered pellets in an upright state at the outer peripheral portion are rolled over on a conveyor, in the traveling direction thereof, and the sintered pellets in the rolled state are sequentially transferred to a polishing device, The tall receiving wall is cut off on the front side of the introduction guideway, and the tall receiving wall is replaced and erected at the missing point. A falling discharge slope for falling is formed, and the height of the lower receiving wall is prevented from sliding down the sintering pellets in a standing state from the mounting peripheral surface of the supply disk, and The sintering pellets that have been transported in a lying state on the installation peripheral surface are
Overturning in the transfer device for transferring cylindrical sintered pellets to the polishing device, characterized in that the falling slope for dropping is selected to have a size capable of rolling and falling over the short receiving wall. Device for discharging sintered pellets.