JPH0594824A - Waterproof agent applying device for dry battery - Google Patents

Abstract

PURPOSE:To improve the working efficiency by attaching a waterproof agent near the periphery of a applying disk continuously, providing a chute for conveying parallel to the disk, and applying a specific amount of waterproof agent to the upper end faces and nearby of the carbon rods of bare batteries on the chute. CONSTITUTION:A applying device is composed of a applying disk 18 having a rotary shaft 19, a conveying chute 17 to line up and feed bare batteries 30 in the direction square to the disk 17 continuously, a roller 22 to pressure- contact to the bottom surfaces 30a of the bare batteries 30, and a tank 25 in which a paraffin 9 to be a heated liquid waterproof agent is filled. And the part near the periphery of the disk 18 is soaked in the paraffin 9 to attach the paraffin 9, and the upper end faces 5a of carbon rods 5 are contacted to a surface near the periphery of the disk 18 by the roller 22 so as to apply a specific amount of paraffin 9 near the surfaces 5a. A heater 26 is provided in the tank 25 to make the paraffin 9 in a liquid condition constantly, and if the battery 30 happens to stop in the chute 17, the disk 18 is separated from the rod 5 by an air cylinder 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproofing agent applying device for a dry battery, and more particularly to a waterproofing device applying a waterproofing agent for improving the leakage resistance of a carbon rod to a dry battery with good workability. The present invention relates to a waterproof agent applying device.

[0002]

2. Description of the Related Art In a dry battery, a cylindrical separator sheet 2 and a bottom sheet 3 are usually placed inside a cathode zinc can 1 as shown in FIG. 4, and then a molded anode mixture 4 is placed in the separator sheet 2. Then, a carbon rod 5 which also serves as an anode terminal is press-fitted in the center of the anode mixture 4 to seal the opening of the cathode zinc can 1 with a synthetic resin sealing body 7. Further, it is manufactured by attaching the bottom plate 10 and covering it with the resin tube 11, attaching the cap 8 integrated with the sealing plate and putting it in the outer can 6.

However, even if it is covered with the synthetic resin sealing body 7 or the resin tube 11, the electrolyte mixes the graphite powder with tar or pitch during storage or use of the dry battery.
There is a problem that the carbon rod having porosity produced by being extruded and fired at a high temperature is leaked to the outside through the carbon rod.

Therefore, in order to improve the resistance to liquid leakage, the carbon rod 5 is subjected to a waterproof treatment in advance, and as shown in FIG. 5, the upper end 5a of the carbon rod 5 which is in contact with the cap 8 and the periphery thereof have a viscosity such as paraffin. The petroleum-based waterproofing agent 9 having the above property was applied to the carbon rod 5 so as to prevent it from leaking.

Incidentally, the battery, which has been completed up to the step of inserting the anode mixture 1 into the cathode zinc can 1 shown in FIG. 5 and sealing the opening of the cathode zinc can 1 with the synthetic resin sealing plate 7, is referred to as a unit cell 30 hereinafter. To tell.

As shown in FIG. 6, paraffin (waterproofing agent)
9 is melted in the tank 13 and pumped (not shown)
Fry in the small tank 14 at the top. The paraffin 9 was applied by freely dropping it into the vicinity 5a of the upper end portion of the carbon rod of the unit cell 30 which was flown by the conveying means by the nozzle 12 led out from the small tank 14. Further, in this method, since the paraffin 9 adheres too much, the unnecessary paraffin 9 is immediately blown off by the air 15.

[0007]

However, in such a dropping method, a stable amount of paraffin 9 cannot be applied, causing a large variation, and it is difficult to apply it to a required portion. Furthermore, since it is blown off by air, the surrounding machines and atmosphere were contaminated.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a waterproofing agent applying device for a dry battery, which has a stable applied amount and improved maintainability.

[0009]

In order to achieve this object, the waterproofing agent applying device for a dry battery of the present invention is such that a part of a rotating applying disc is immersed in molten paraffin and the applying disc is applied. To contact the upper end surface of the carbon rod of the unit cell. Use the speed control motor to adjust the coating amount. If the peripheral speed of the coated disk and the speed of the unit cell are the same, the paraffin attached to the carbon rod is the area of the upper end surface of the carbon rod, but if there is a difference in the peripheral speed of the coated disk and the speed of the unit cell, During the contact time, the carbon rod slides between itself and the coating disk, increasing the coating area.

[0010]

With this construction, the dry battery waterproofing agent applying apparatus of the present invention can uniformly apply the waterproofing agent to the upper end surface of the carbon rod, and the applying operation can be continuously performed at high speed. As a result, it is possible to prevent liquid leakage from the carbon rod, so that it is possible to improve liquid leakage resistance during storage and during use of dry batteries.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A waterproof battery coating device for a dry battery according to an embodiment of the present invention will be described below with reference to the drawings.

The structure of the waterproofing agent applying device for a dry battery according to the present embodiment is such that the applying disk 18 rotated by the rotary shaft 19 and the unit cells 30 are continuously provided side by side in a direction perpendicular to the applying disk 18. Transfer chute 1 provided in parallel with the circular plate 18
7, and a roller 22 that comes into pressure contact with the bottom surface 30a of the unit cell,
The tank 25 filled with the heated liquid waterproofing agent (paraffin) 9 is provided, and the vicinity of the outer periphery of the rotating coating disc 18 below the rotating shaft 19 is filled with the small tank 25 and heated. By being immersed in the paraffin 9, the paraffin 9 is attached to the vicinity of the outer peripheral portion of the continuously rotating coating disk 18, and the roller 22 is pressed against the bottom surface 30a of the unit cell to remove the carbon rod of the unit cell 30. The upper end surface 5a is attached to the rotary shaft 1
By pressing it against one surface near the outer peripheral portion of the rotating coating disk 18 on the upper side of 9, a predetermined amount of paraffin 9 is applied to the upper end surface 5a of the carbon rod and its vicinity continuously and at high speed. ..

Further, the transfer chute 17 for the unit cell 30 is attached to the base 16. The coating disc 18 is attached to a rotating shaft 19 held by a bearing 20. The rotary shaft 19 is rotated by a speed control motor 24 via a gear 21. If the unit cell 30 may stop in the transport chute 17, the coating disk 18 is separated from the carbon rod 5 by the air cylinder 23.
The small tank 25 is also attached to the base 16. A heater 26 is installed in the small tank 25 so that it is always kept at a constant temperature. Paraffin (petroleum-based waterproofing agent) 9
Is in a liquid state. The small tank 25 is supplied with paraffin 9 from a large tank (not shown) attached elsewhere. As shown in FIG.
Is continuously supplied to the transfer chute 17, and the roller 2
Paraffin 9 can be applied to the upper end surface 5a of the carbon rod and its vicinity by pressing the bottom surface 30a of the unit cell with 2 and pressing the upper end surface 5a of the carbon rod against the coating disk 18. The coating amount is adjusted by the speed control motor 24.

[0014]

As is apparent from the above description of the embodiments, according to the waterproofing agent applying apparatus for a dry battery of the present invention, the waterproofing agent is continuously adhered in the vicinity of the outer peripheral portion of the applying disc, and the applying circle is applied. An excellent waterproof battery coating device for a dry battery, which is provided in parallel with the plate and can continuously and rapidly apply a predetermined amount of waterproofing agent to the upper end surface of the carbon rod of the unit cell and its vicinity on the transfer chute. Can be provided.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing the overall configuration of a waterproof battery coating device for a dry battery according to an embodiment of the present invention.

FIG. 2 is a front view showing the configuration of the main part of the same.

FIG. 3 is a plan view showing the configuration of the main part of the same.

FIG. 4 is a vertical sectional view showing the structure of a dry battery.

FIG. 5 is a vertical sectional view showing the structure of a unit cell.

FIG. 6 is a perspective view showing a configuration of a conventional waterproofing agent applying device for a dry battery.

[Explanation of symbols]

 5 carbon rod 5a carbon rod upper end surface 9 paraffin (waterproofing agent) 17 transport chute 18 coating disc 19 rotating shaft 22 roller 25 small tank (tank) 30 unit cell 30a unit cell bottom surface

Front page continuation (72) Inventor Mamoru Ishii 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A coating disc which rotates by a rotating shaft, and a transfer chute which is provided in parallel with the coating disc and supplies unit cells continuously arranged in a direction perpendicular to the coating disc.
The tank was filled with a roller that was pressed against the bottom surface of the unit cell and a tank filled with a heated liquid waterproofing agent, and the tank was filled near the outer peripheral portion of the rotating coating disk below the rotating shaft. By being immersed in the heated liquid waterproofing agent, the waterproofing agent is attached in the vicinity of the outer peripheral portion of the coating disk that continuously rotates, and the roller is pressed against the bottom surface of the unit cell, By pressing the upper end surface of the carbon rod of the unit cell against one surface in the vicinity of the outer peripheral portion of the rotating coating disc on the upper side of the rotating shaft, a high speed of a predetermined amount of the waterproofing agent is continuously applied at a high speed. A waterproofing agent coating device for dry batteries that is applied to the upper end surface of the rod and its vicinity. 2. The waterproofing agent applying device for a dry battery according to claim 1, wherein the applying amount of the waterproofing agent is adjusted by adjusting the rotation speed of the applying disk.