JPS6025151A - Paste filling apparatus for lead storage battery - Google Patents

Abstract

PURPOSE:To achieve equal distribution of paste and also uniform thickness of the plate, by providing a paste filling apparatus with a grid transport drum and a paste filling hopper which push paste onto the drum, and further by forming the circumferential surface of the drum uneven. CONSTITUTION:A drum 10 rotates in the direction indicated by the arrow of the diagram and transports grids 4 which are forwarded from the previous process by auxiliary transport rollers 11, 12. Installed above the drum 10 is a paste filling hopper 13 having a rotary wing 14 and a pair of rollers 15, 15 inside. The paste filling hopper 13 agitates the paste supplied from the upper opening and firmly fills the grids 4 on the drum 10 with the paste. The rotary scraper 16 scrapes excess paste off the grids. Projection 17 which has a section of a trapezoidal shape and is arranged in a grid shape is formed on the surface of the drum 10 in order to increase grid transport capacity. Furthermore, by providing the projection on the drum 10, the grid frame is buried inside of a plate to and the frame works more effectively as a conductor. Thus, plates filled with equal amount of paste and having uniform thickness can be produced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in a paste filling device for lead-acid batteries, which is used to fill an electrode plate grid, particularly a continuous long band-shaped grid, with a paste-like active material. FIG. 1 shows a typical configuration of a conventional paste filling device for lead-acid batteries. 1 is a pet, 2 is a driving pulley, 3 is a driven pulley, and the belt 1 is driven by the boots IJ-2 and 3 in the direction of the arrow in the figure.
The grid 4 supplied from the previous process is transported. 5 is belt 1
This is a paste filling hopper installed above the second page, which has a rotary blade 6 and a pair of rollers 7 and 7 inside, which stirs the paste supplied from the top and presses it onto the grid on the belt.
The paste is filled into a grid. 8 is a base plate that supports the belt, and 9 is a scraper that scrapes off paste excessively applied to the grid.

Here, since the gap between the base plate 8 and the scraper 9 is set constant, the amount of paste filling and the thickness of the electrode plate, which affect the capacity of the battery, depend on the thickness of the belt that enters the gap between the base plate 8 and the scraper 9. be greatly affected.

Traditionally, this belt was made of woven cotton, but recently resin belts, stainless steel belts, etc. have also been used.

Since the cloth belt is made of woven fabric, there is a problem in that there is a large variation in thickness during manufacturing, and there is also a large variation in thickness due to elongation as the usage time increases.

Resin belts have less variation in thickness during production and less change during use, but the surface layer is easily scratched, and the parts with 3 pesos scratches become thicker or thinner, causing variations. Stainless steel belts have fewer drawbacks than cloth belts and resin belts, but in order to have strength, they require 0.3
This requires a thickness of approximately 1f+a, and the diameters of the driving and driven pulleys must be considerably larger than those of the conventional method, resulting in an inconvenience that the entire device becomes larger.

OBJECTS OF THE INVENTION An object of the present invention is to provide a paste filling device for a lead-acid battery that can achieve uniformity in the amount of paste filling and the thickness of the electrode plate by eliminating the use of a belt.

Structure of the Invention In order to achieve the above object, the present invention is characterized in that it has a drum for conveying a grid and a paste filling hopper for pressing paste onto this drum, and that the entire circumferential surface of this drum is constructed with an uneven surface. shall be.

DESCRIPTION OF EMBODIMENTS FIG. 2 shows an embodiment of a paste filling device for lead-acid batteries according to the present invention. 1o is a drum. The drum 10 rotates in the direction of the arrow and transports the grid 4 fed from the previous process via transport auxiliary rollers 11,12. Reference numeral 13 denotes a paste filling hopper provided above the drum, and inside thereof, as in the conventional example, there is a rotary blade 14 and a pair of rollers 16 and 15, which stir the paste supplied from the top. Fill the grid on the drum with pressure. 16 is a rotating scraper for scraping off paste excessively applied to the grid.

As shown in FIGS. 3 and 4, the surface of the drum 1o is provided with unevenness all over its circumference. Figure 3 shows drum 1
This is an example in which convex portions 17 having a trapezoidal cross section are provided in a lattice shape on the surface layer of the o. FIG. 4 shows an example in which a convex portion 18 in the shape of a truncated cone is provided.

The irregularities on the surface of the drum 1o are used to increase the conveyance force of the lattice and to make it easier for the paste to enter between the drum and the lattice. It has the effect of increasing efficiency.

The thickness Tp of the electrode plate manufactured using the lead acid battery paste filling apparatus shown in FIG. The dimension is obtained by subtracting the thickness TB of the belt 1 from the above, that is, Tp "" To T B.

Further, the paste filling amount WP is greatly influenced by the electrode plate thickness Tp. If the area of the electrode plate is A, then WP-A-T
The relationship P holds true. Note that the specific gravity of the lattice (bones) and the apparent density of the paste vary in electrode plates for lead-acid batteries, so the above equation does not hold true exactly, but it is shown here in the sense that a close relationship holds. In other words, there was a deep relationship between the electrode plate thickness, paste filling amount, and belt.

However, in the present invention, as described above, since the belt is eliminated, the gap TD formed between the drum 1o and the rotating souffle bar 16 immediately becomes the electrode plate thickness TP (TP='rD).

In FIG. 2, the drum 10 and the scraper 16 are both rotating, and the gap TD is different from the conventional base plate 8 and scraper 9.
Although it is not fixed like this, it is constructed while rotating, but by increasing the precision of each page, it is possible to obtain a gap close to that of a fixed one. Plate accuracy in conventional example ±o, 10 to 0.15 t
With respect to run, the plate accuracy according to the present invention can be ±0.03 degrees.

In the examples, the rotating scraper 16 was used because a rotating scraper is less likely to form a built-up edge (solidified paste) due to paste than a fixed scraper, and the uniformity of the gap TD is higher. Any scraper may be used depending on the objective of plate accuracy and workability.

The paste filling device for lead-acid batteries of the present invention can be effectively used to continuously fill paste into continuous band-shaped grids such as expanded grids, which have recently started full-scale production. This is because the lattice is continuous and can be easily wrapped around the drum surface, making it easy to transport.

Effects of the Invention According to the present invention, an electrode plate having a uniform thickness and paste filling amount can be obtained, and a lead-acid battery with stable quality can be manufactured. In addition, with the demand for smaller batteries in recent years, stabilizing the thickness of the electrode plate and the amount of paste filling have become even more important factors.
It meets this demand. Furthermore, since no belt is used, the time required to replace the belt, which is a consumable item, and the time required for cleaning it can be reduced, and productivity can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view with main parts cut away of a conventional paste filling apparatus for lead-acid batteries, FIG. 2 is a side view with main parts cut away showing an example of the configuration of a paste filling apparatus for lead-acid batteries according to the present invention, and FIG. 3 Ca
) and Figure 4 (al is a plan view showing a part of the drum, Figure 3)
FIG. 4(b) and FIG. 4(b) are sectional views thereof. 4... Lattice, 10... Drum, 13.
...Paste filling Hocher, 17.18...
・Convex part. Name of agent: Patent attorney Toshio Nakao and 1 other person Japanese Patent Application Publication No. 2006-25151 (3) Figure 1 Figure 2

Claims (1)

[Claims] 1. A paste filling device for a lead-acid battery, comprising a drum for conveying a grid, and a paste filling hopper for pressing paste onto the drum, the entire circumferential surface of the drum having an uneven surface.