JPH0837039A - Method and device for peeling off cap of waste nas battery - Google Patents

Abstract

PURPOSE:To provide a method and device capable of simply and surely peeling off the cap of a waste NaS battery without requiring any manual work. CONSTITUTION:A bite device 5 and a click driving device 6 are provided on the side of a chuck device 1 for holding and rotating a waste NaS battery 20. The bite device 5 forms an annular notch in the outer periphery of the cap 21 of the waste NaS battery 20. The click driving device 6 inserts a click 14 into this annular notch, moves it in an axial direction and peel off the cap 21 from the waste NaS battery 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing a cap of a waste NaS battery used in a process of treating waste of a NaS battery used for large-scale storage of electric power.

[0002]

2. Description of the Related Art A NaS battery is a β-alumina solid electrolyte tube filled with sodium and sulfur as active materials on both sides,
It has a structure in which the outer circumference is wrapped with a stainless steel protective tube, and has attracted attention as a battery suitable for mass storage of electric power and as a power source for electric vehicles.

However, since the life of this NaS battery is estimated to be about 10 years, it is expected that a large amount of discarded NaS batteries will be generated in the future. The inventor is the first in the world to dispose of
A treatment method for NaS batteries is under development,
We have developed technology to recover sodium and sulfur inside by making holes in the cap of the S battery.

As described above, it is necessary to form a hole in the cap portion in order to process a waste NaS battery. Further, to remove sodium existing in the cartridge, it is necessary to first remove the cap. Until now discarded NaS
Attach the battery to the chuck of the lathe and rotate it, make a circular cut on the outer circumference of the welded part between the cap and the cylinder with a bite, insert the tip of the driver into this cut and manually remove the cap It had been.
However, the cap cannot be removed well just by inserting the tip of the driver into one place and prying it open, and it is necessary to pry open evenly from a plurality of places, which requires a lot of trouble to peel the cap.

[0005]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and provides a method and apparatus for removing the cap of a waste NaS battery that can be easily removed without the need for manual labor. It was made to provide.

[0006]

[Means for Solving the Problems] The method for removing the cap of a waste NaS battery of the present invention made to solve the above-mentioned problems is such that the waste NaS battery is rotated around its central axis while an annular shape is formed on the outer periphery of the cap. It is characterized by making a notch, inserting a claw into this annular notch, and moving it in the axial direction of the discarded NaS battery to remove the cap. The scrap NaS battery cap peeling device of the present invention is a bite device that inserts an annular notch on the outer periphery of the scrap NaS battery cap on the side of the chuck device that holds the scrap NaS battery and rotates it around its central axis. And a claw driving device for inserting a claw into the annular notch and moving the claw driving device in the axial direction of the discarded NaS battery.

[0007]

According to the method and device for removing the cap of the discarded NaS battery of the present invention, the discarded NaS battery is attached to the chuck device and rotated about its central axis, and first, the outer periphery of the cap and the cylinder are welded by the bite device. Make an annular cut in the wire and scrape off the weld. Next, the tool is retracted and the claw of the claw driving device is inserted into the annular notch (groove) made by scraping off the welded part, and the claw is moved in the axial direction while rotating the discarded NaS battery at a low speed. This allows the cap to be easily peeled off. Of course, it goes without saying that the rotation speed can be adjusted appropriately.

[0008]

The present invention will be described below in more detail with reference to the illustrated embodiments. FIG. 1 is a plan view of the entire apparatus of the embodiment, and 1 is a chucking device for horizontally chucking a waste NaS battery 20. The chuck device 1 includes a hollow chuck 2, a bearing 3 thereof, and a rotation motor 4 thereof. As the hollow chuck 2, a scroll chuck or the like which is generally used as a chuck of a lathe can be used, and a waste NaS battery 20 can be chucked and rotated around its central axis. Further, the rotation motor 4 can rotate the hollow chuck 2 at an arbitrary speed.

A bite device 5 and a claw driving device 6 are provided on the side of the chuck device 1. Bite device 5
Is a moving table 7 that can be moved back and forth in the direction of the arrow shown in FIG. 1 by a cylinder 5a.
Thin bite 9 like a cut-off bite on this bite base 8
Is set. By advancing the cutting tool 9 toward the rotating NaS battery 20 chucked by the hollow chuck 2 and rotating, a ring-shaped cut can be made in the outer periphery of the cap of the waste NaS battery 20. In addition,
The bite base 8 of this embodiment comprises a fixed part 8a and a movable part 8b, and has a structure in which the position of the bite 9 can be finely adjusted by a screw type adjusting device 10.

FIG. 2 is an enlarged plan view of a portion of the pawl drive device 6,
FIG. 3 is a side view of the portion of the pawl drive device 6. The claw driving device 6 is a cylinder provided parallel to the axis of the chuck device 1.
11 and an elevating cylinder 12 vertically provided at the tip of the piston rod. As shown in FIG. 3, an arm 13 extending horizontally toward the waste NaS battery 20 chucked by the chuck device 1 is attached to the upper end of the lifting cylinder 12, and a fork-shaped claw is attached to the lower surface of the tip end thereof.
14 are provided. The fork-shaped claw 14 has a predetermined thickness and inner diameter so that it can be inserted into an annular notch formed on the outer periphery of the cap of the waste NaS battery 20 by the cutting tool 9. The pawl 14 is always lifted upward by the lifting cylinder 12 as shown by the solid line in FIG.

Next, a cap peeling method using this apparatus will be described. First, in the hollow chuck 2 of the chuck device 1,
Chuck the discarded NaS battery 20. There is a stopper at the back of the hollow chuck 2 so that the tip portion of the waste NaS battery 20 can always be made to protrude from the tip portion of the hollow chuck 2 by a certain size as shown in FIG. Next, the rotation motor 4 is driven to dispose of the hollow chuck 2 and the discarded NaS battery 20.
Rotate at high speed around the central axis. Then, as shown in FIG. 4 and FIG. 6, the tool 6 is moved forward by the cylinder 6 of the tool 5, and the thin tool 9 is brought into contact with the welded portion of the outer periphery of the cap 21 of the discarded NaS battery 20 as shown in FIGS. Forming an annular cut 22. Although the welded portion of the cap 21 is cut by this, the cap 21 is still fitted in the tube 23, and since the cap 21 is also adhered by the sodium on the back surface thereof, the cap 21 cannot be peeled off by itself. Can not.

Then, next, by the cylinder 6, the tool holder 8
Is moved backward and the lifting cylinder 12 is operated to lower the claw 14 as shown by an imaginary line in FIG. As a result, the claw 14 is fitted in the annular cutout 22 on the outer periphery of the cap 21. In this state, while rotating the hollow chuck 2 at a low speed, as shown in FIG. 5, the cylinder 11 of the claw driving device 6 moves the claw 14 together with the lifting cylinder 12 to the right along the axis of the discarded NaS battery 20. Then, the cap 21 receives a force in the axial direction uniformly over the entire circumference, so that the tip end portion is peeled off from the annular cut 22 of the cap 21 and falls into the cap drop hole 15.
Waste NaS battery 20 with cap 21 removed in this way
Is sent to the next sodium removal step.

[0013]

As described above, the waste Na of the present invention
S According to the method and device for removing the battery cap,
The S battery cap can be easily and reliably removed without the need for manpower, which is very effective in treating a large amount of discarded NaS batteries. Although it is conceivable to scrape off the entire cap, according to the present invention, the cap can be peeled off by a slight amount of cutting compared to that, the amount of cutting waste is small, and the amount of cutting waste mixed in sodium can be reduced. effective.

[Brief description of drawings]

FIG. 1 is a plan view of an entire apparatus according to an embodiment.

FIG. 2 is an enlarged plan view of a pawl drive device.

FIG. 3 is a side view of a pawl driving device.

FIG. 4 is a plan view illustrating a cutting process.

FIG. 5 is a plan view illustrating a cap peeling step.

FIG. 6 is an enlarged cross-sectional view of a main part for explaining a cutting process.

FIG. 7 is an enlarged cross-sectional view of a main part of a cap in which a notch is formed.

[Explanation of symbols]

1 chuck device, 2 hollow chucks, 3 bearings, 4
Rotation motor, 5-bit device, 6-claw drive device, 7
Moving table, 8 bytes, 9 bytes, 10 adjusting device, 11 cylinders, 12 lifting cylinders, 13 arms, 14
Claws, 15 cap holes, 20 discarded NaS batteries, 21
Cap, 22 annular notches, 23 tubes

Claims (2)

[Claims] 1. A circular notch is made on the outer periphery of the cap while rotating the discarded NaS battery about its central axis,
A method of peeling a cap of a discarded NaS battery, which is characterized by inserting a claw into the annular notch and moving it in the axial direction of the discarded NaS battery to remove the cap. 2. A tool for holding an annular notch on the outer periphery of the cap of the discarded NaS battery on the side of a chuck device for holding the discarded NaS battery and rotating it about its central axis, and a claw on the annular notch. A cap peeling device for a discarded NaS battery, which is provided with a claw driving device that inserts a claw drive that moves in the axial direction of the discarded NaS battery.