JPH08111221A - Zinc grain scaling device - Google Patents

Abstract

PURPOSE: To provide a zinc grain scaling device which measures the amount of zinc grains for filling a battery accurately without requiring any complicated procedures and which is effective to manufacture high reliability batteries with a high yield. CONSTITUTION: A plurality of through holes for measuring 14a, 14b, 14c having different capacities are provided in a scale plate 14, and the part in service (region) of this plate is dislocated without making mounting/removal or replacement of the plate itself 14 so that changeover to different capacity can be made. In details, the through holes 14a, 14b, 14c having different diameters are previously provided in the scale plate 14 which is arranged with possibility of sliding and advancing/retreating in tight attachment between a supporting table and the end face of a zinc grain flow-out port 12 furnished in a hopper 11, and the sliding and advance/retreat position (region) of the scale plate 14 relative to the end face of the flow-out port 12 is changed over appropriately so that a proper weighting operation can always be performed according to the property of the zinc grains concerned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a zinc particle weighing device,
In particular, the present invention relates to a zinc particle weighing device that is compatible with mass productivity and yield improvement of batteries using zinc as an active material.

[0002]

2. Description of the Related Art In a wristwatch, for example, a button type battery is generally used as a driving power source. FIG.
1 is a cross-sectional view showing the configuration of the main part of a button-type battery as the driving power source, wherein 1 is a container that also serves as an anode, 2 is an opening of the container 1 fitted through an insulating packing 3. A lid (or container) which also serves as a cathode for liquid-tightly sealing the opening, 4 is an anode active material (silver oxide-manganese mixed system) filled in the container 1, 5 is a separator 6 in the container 1. It is a cathode active material (zinc particles) filled and filled via the. In the above structure, the insulating packing 3 electrically insulates the anode 1 and the cathode 2 and secures the liquid tightness of the button type battery. Further, the separator 6 functions to separate both active materials 4 and 5 and to proceed while controlling electric energy conversion between both active materials 4 and 5.

By the way, in the button type battery,
In order to ensure the required battery function sufficiently and efficiently, it is important in terms of quality that the filling amount of the anode active material 4 and the cathode active material 5 is appropriate, and that there is no void including the separator 6. To be done. That is, first of all, if the filling amount of the anode active material 4 and the filling amount of the cathode active material 5 are not controlled with high accuracy in accordance with the capacity and standard of the button-type battery, as a result, the anode and the cathode will end up. However, there is a problem in that the balance is lost, gas is generated after discharge, and the battery is easily destroyed. Secondly, if a void portion exists in the button-type battery (for example, the region of the separator 6), the void portion becomes an air trap and the discharge characteristic is deteriorated. In the active materials 4 and 5, the filling amount (for example, 30 mg ± 1 mg) of the zinc particles (cathode active material) 5 that easily influences the electromotive function and the like is emphasized.

In response to these problems, zinc particles (cathode active material) 5 are used in the manufacturing process of the button type battery.
Was measured and filled with an electronic balance, for example. But,
This weighing means using an electronic scale newly poses a problem that it is complicated and mass productivity is significantly reduced. Under such circumstances, it has been attempted to control the filling amount of zinc particles by a weighing plate in terms of volume (volume). That is, as schematically shown in FIG. 4 as a main part of the embodiment, a support base 8 and a zinc particle outlet which are opposed to an end surface of the zinc particle outlet 7a of the hopper 7 for accommodating zinc particles and are arranged at a predetermined interval.
The weighing plate 9 is slid and moved back and forth while closely adhering between the end faces of 7a.
Here, the weighing plate 9 is formed with a zinc grain measuring through hole 9a, and the zinc grain outlet 7a is supplied into the measuring through hole 9a during the sliding and advancing / retracting process of the weighing plate 9.・ Filled and supplied / filled zinc particles are formed on the support base 8 through hole 8a
At the position of, a means for dropping it into a container 10, for example, a container (or a lid) that also serves as a cathode is also adopted.

[0005]

However, the zinc particle weighing means is not only satisfactory in stability (reproducibility) and reliability, but also complicated in operation and is not satisfactory in terms of mass productivity. That is, the particle size (particle size) of the zinc particles (zinc particles) used as the active material of the button-type battery generally differs depending on the manufacturing method, manufacturing lot, etc. Even if there is, the filling amount is different. In other words,
It is often recognized that even if the apparent volumetric weighing of zinc particles by the constant weighing plate 9 is the same, a certain allowable range cannot be secured due to a difference in mass. Therefore, when the weighing plate 9 provided with the measuring through holes 9a is used, the measuring through holes are used each time corresponding to the manufacturing lot of zinc particles.
It is necessary to measure the filling amount in 9a and change / adjust to the weighing plate 9 provided with an appropriate through hole 9a for weighing. But,
In the sliding / advancing / retreating construction of the weighing plate 9, since it is necessary to weigh zinc particles with high precision, high precision is required mechanically. Therefore, proper selection / change / adjustment of the weighing plate 9 is required. The work is inevitably complicated. In other words, the zinc particles can be accurately weighed by properly selecting, changing, and adjusting the weighing plate 9, but on the other hand, the adjustment work is complicated and the mass productivity cannot be sufficiently improved. There is.

The present invention has been made in consideration of the above circumstances, and in order to obtain a highly reliable battery with a high yield, the amount of zinc particles to be filled in the battery can be measured with high precision without requiring complicated operations. It is intended to provide an effective zinc particle weighing device.

[0007]

A first zinc grain weighing device according to the present invention is a zinc containing hopper having a funnel-shaped zinc grain outlet, and a zinc grain outlet end face of the zinc grain containing hopper. And a weighing plate disposed so as to be in close contact with and slidable between the support and the end surface of the zinc particle outlet, and the zinc particle outlet. And a plurality of measuring through holes having different spatial volumes and formed so as to be opposed to each other and spaced apart from each other on the weighing plate.

A second zinc particle weighing device according to the present invention comprises a zinc containing hopper having a funnel-shaped zinc particle outlet, and a predetermined interval facing the zinc particle outlet end face of the zinc particle containing hopper. And a weighing table arranged so as to be capable of slidingly advancing and retracting between the supporting table and the end surface of the zinc particle outlet, so that the zinc particle outlet can be opposed. A plurality of measuring through-holes having different spatial volumes formed separately on the weighing plate, and a mass measuring means for intermittently measuring the mass of zinc particles filled in any of the measuring through-holes, And a control unit that slides and retreats the weighing plate according to a mass measurement value to change a measuring through hole facing the zinc grain outlet. That is, according to the present invention, a plurality of through holes for weighing having different space volumes are formed in the weighing plate, and the use portion (area) of the weighing plate is shifted without removing or replacing the weighing plate itself, and The essence is that it is possible to switch to a measuring through hole having a different volume. More specifically, a weighing plate, which is provided in the support table and a zinc particle storage hopper and is capable of slidingly advancing and retreating closely between the zinc particle outlet end faces, has a plurality of weighing terminals of different diameters in advance. Through holes are provided, and the sliding / advancing / retreating positions (areas) of the weighing plate with respect to the zinc grain outlet end face are appropriately switched so that proper weighing can always be performed according to the properties of the zinc grains.

Therefore, the interval between the plurality of metering through holes is such that any one of the metering through holes faces the zinc particle outlet provided in the zinc particle accommodating hopper, and then slides / retracts back and forth to fill. It is selected so that no more than one metering through-hole is present in the area that releases the metered zinc particles. Further, the size of the through hole for measurement, for example, when the thickness of the weighing plate is 2.5 mm, zinc particles 30 mg ± 0.1 mg for weighing,
With a diameter of 2 mm as a standard value, the diameter should be 1.9 mm, 1.8 mm ..., 2.1 mm, 2.2 mm ... with a certain difference.

[0010]

According to the present invention, a plurality of kinds of weighing plates having measuring through holes having different space capacities are mounted in advance so as to cope with different zinc grain properties depending on the manufacturing method and manufacturing lot. Then, only by sliding and advancing and retracting the weighing plate, it is possible to arbitrarily select the through hole for weighing and easily perform proper weighing and filling of zinc particles. In other words, it is possible to use the weighing through holes properly according to the properties of the zinc particles to be used, without the need to attach / detach or replace the weighing plate itself, and thus without the need for highly precise mechanical adjustment. Therefore,
The yield of the battery with high reliability is good, and it greatly contributes to mass productivity.

[0011]

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

FIG. 1 is a sectional view showing an example of the essential structure of a zinc particle weighing apparatus according to the present invention. In FIG. 1, 11 is a zinc storage hopper provided with a funnel-shaped zinc grain outlet 12, and 13 is arranged at a predetermined interval facing the end surface of the zinc grain outlet 12 of the zinc grain storage hopper 11. It is a support base. Further, 14 is a weighing plate which is arranged so as to be able to closely slide and move back and forth between the support base 13 and the end surface of the zinc particle outlet 12;
4b and 14c are weighing plates that can face the zinc grain outlet 12
14 is a plurality of metering through-holes having different space volumes and formed in the vertical direction and at a distance from each other. FIG. 2 is a plan view showing an example of the structure of the weighing plate 14.
With a 2.5 mm plate, the measuring through hole 14a has a diameter of 2 mm (center control value), the measuring through hole 14b has a diameter of 2.1 mm (control value upper limit),
The measurement through hole 14c is set to correspond to a diameter of 1.9 mm (control value lower limit).

Further, 15a and 15b are sliding members for sliding the weighing plate 14 in a predetermined direction (for example, an arrow method) and moving it back and forth.
It is an advance / retreat mechanism. And this sliding / retracting mechanism 15a, 1
5b is installed on the support base 13 after the required zinc particles are supplied and filled, for example, the through-hole 14a for measurement of the weighing plate 14 faces the zinc particle outlet 12 of the hopper 11 for storing zinc particles. Corresponding to the zinc particle discharge port 13a, and the measuring through hole 1
Weighed so that the zinc particles supplied / filled into 4a can be transferred / filled directly or via a pressure-feeding supply nozzle, for example, onto the cathode container (or lid) of a button-type battery. Slide the plate 14 back and forth.

Further, 17 is a mass measuring means for intermittently measuring the mass of the zinc particles supplied and filled in the measuring through hole 14a, and 18 is a mass measurement value by the mass measuring means 17, This is a control unit for sliding and advancing and retreating the weighing plate 14 to change it to the measuring through hole 14b or 14c facing the zinc grain outlet 12. That is, the hopper 11 for accommodating zinc particles
When the lot of zinc particles in the inside is changed, or when zinc particles of different lots are mixed, for example, the mass of the zinc particles supplied / filled in the measuring through hole 14a of the weighing plate 14 is weighed to obtain the specified mass. If it is within the range, the zinc particles are weighed, and the operation of transferring and filling the cathode container (or lid) of the button battery is continued. However, in the mass measurement of the zinc particles supplied and filled in the measuring through-hole 14a of the weighing plate 14, if the mass range is out of the specified mass range, the deviation of the specified mass range is due to the upper limit side or the lower limit side. The weighing plate
The operation / use area of 14 is switched / changed to the measuring through hole 14c side or the measuring through hole 14b side, and an appropriate measuring through hole 14b or 14c is selected.

In the above description, the operation / use area of the weighing plate 14 is switched, in other words, the measurement through hole is switched / changed.
Although the configuration has been described in which the control unit 18 automatically performs the measurement based on the sampling value (mass measurement), the measurement through hole may be switched / changed manually. In addition, in the above description, the sliding / advancing / retreating mechanism for sliding / advancing / retreating in a certain direction is used to switch the operation / use area of the weighing plate 14.
Although an example of the configuration performed by a and 15b is shown, the weighing plate 14 may be, for example, a disc shape and may be slidably rotated. That is, the present invention is not limited to the above examples, and various modifications can be made without departing from the spirit of the present invention.

[0016]

As described above, according to the zinc particle weighing apparatus of the present invention, zinc particles having different filling masses due to their properties even with the same space volume can be easily processed without complicated operations and adjustments. Moreover, it is possible to perform measurement with good reproducibility. In other words, when changing the lot of zinc particles to be used, other than selecting the required through-hole for measurement by confirming whether the amount of zinc particles weighed / filled is within the specified range or not by so-called sampling. In addition, the amount of zinc particles as the battery active material can be accurately and easily measured without requiring complicated operations and mechanical adjustments and without requiring a skilled worker. . And, it can be said that such switching of the through holes for measurement and shortening of adjustment time, and elimination of skill required greatly contribute to the improvement of productivity of button type batteries.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration example of a main part of a zinc particle weighing device according to the present invention.

FIG. 2 is a plan view showing a configuration example of a weighing plate included in the zinc particle weighing device according to the present invention.

FIG. 3 is a cross-sectional view showing a configuration example of a button type battery.

FIG. 4 is a sectional view schematically showing an embodiment of a conventional zinc particle weighing method.

[Explanation of symbols]

1,10,16 …… Container that also serves as anode 2 …… Lidder (or container) that also serves as cathode 3 …… Packing 4 …… Anode active material 5 ……
Cathode active material 6 …… Separator 7,11 …… Zinc particle storage hopper 7a, 12 …… Zinc particle outlet 8,13 …… Supporting base 8a, 13a… Through hole 9,14 …… Weighing plate
9a, 14a, 14b, 14c ... Measuring holes 15a, 1
5b …… Sliding / retracting mechanism 17 …… Mass measuring means
18 ... Control unit

Claims (2)

[Claims] 1. A zinc particle accommodating hopper having a funnel-shaped zinc particle outlet, and a support base arranged at a predetermined interval so as to face an end surface of the zinc particle accommodating hopper. A weighing plate disposed so as to be capable of slidingly advancing and retracting between the support and the end surface of the zinc particle outlet, and a weighing plate formed so as to be opposed to the zinc particle outlet and separated from each other. A zinc grain weighing device, comprising a plurality of weighing through holes having mutually different spatial volumes. 2. A zinc particle accommodating hopper having a funnel-shaped zinc particle outlet, and a support table arranged at a predetermined interval so as to face an end surface of the zinc particle accommodating hopper. A weighing plate disposed so as to be capable of slidingly advancing and retracting between the support and the end surface of the zinc particle outlet, and a weighing plate formed so as to be opposed to the zinc particle outlet and separated from each other. A plurality of measuring through holes having mutually different spatial volumes, a mass measuring means for intermittently measuring the mass of the zinc particles filled in any of the measuring through holes, and sliding the weighing plate by the measured mass value. A zinc particle weighing device, comprising: a control unit that advances and retreats to change a measuring through hole facing the zinc particle outlet.