JPS6030066B2 - Apparatus and method for welding electrode plates for storage batteries using cast straps - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on a method that can be referred to as a welding method for welding an electrode plate lug group for a storage battery and a cast strap, which was previously proposed by the applicant in Japanese Patent Application No. 53-64932. Related improved apparatus and methods are provided.

In the above-mentioned application, a pair of weir walls are provided in the concave groove passage so as to be freely retractable, and a mold recess in which molten lead for strub casting is retained is formed between each of the protrusions. It takes time for the molten metal that has accumulated inside the mold to solidify, and at the time of solidification, burrs are generated on the casting strap due to the gap between the bottom of the casting mold recess and both weir walls, resulting in poor casting. This causes the inconvenience that the strap cannot be molded.

The present invention relates to a device which eliminates such disadvantages, allows rapid cooling, and provides welding of electrode plate lugs by means of a good cast strap having a predetermined shape and no burrs, and which provides a device for welding electrode plate lugs by means of a good casting strap having a predetermined shape and having no burrs. In the method of welding a battery plate lug group with a cast strap in which a pair of weir walls facing both sides and downstream are removably provided, as part of the concave groove, on the bottom surface thereof, A movable strap casting mold consisting of the pair of weir walls and a vertically movable bottom wall and having a concave portion inside for accommodating a group of electrode plates is moved vertically into the concave groove path. It is provided so that it can protrude freely.

Further, in the method of the above-mentioned application, it is preferable and common to divide the relatively large device for holding the electrode plate lug group into two stages.

That is, first, the tip of the electrode plate lug group is lowered to be immersed in flowing hot water to heat the entire lug, and then the molten metal accumulated in the strap casting recess formed between a pair of weir plates. Since a predetermined depth must be set at a predetermined depth, a large-scale lowering adjustment device is required, which is uneconomical and difficult to operate, and is not suitable for fine adjustment. The present invention improves the method described above, stops the two-stage immersion using the electrode plate lug holding device in one stage, and
Immersion to a predetermined depth is performed by upward movement of the mold, and a method is provided in which the adjustment and cooling time are appropriately adjusted. After soaking in the water and raising the temperature of the ear group by the heat of the flowing setting sun,
The movable strub casting mold is moved upward and projected into the concave channel to cut it off from the flow of the molten metal, while at the same time retaining the molten metal in the concave portion of the mold, and an ear is formed in the accumulated molten metal. It is characterized in that the group is immersed to a predetermined depth and solidified in this state. Embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, reference numeral 1 indicates a concave channel with a U-shaped cross section through which molten lead flows, and a concave lc that crosses in the width direction is provided on the bottom surface of the concave channel 1.
In this concave lc, a bottom wall 2a and a wall 2b, 2 protruding upward facing the upstream side and the downstream side are provided on the top surface of the bottom wall 2a.
b, these weir walls 2b, 2b and both side walls of the groove path l
a recess 4 that accommodates the electrode plate lug group 3 surrounded by a and la;
A mold table 2 for casting a movable strap is provided inside the iron tank so as to be movable.

5 indicates a piston punch connected to the lower surface of the bottom wall 2a,
The mold table 2 is moved up and down through the piston village 5 by a driving source, and when moving upward, it is made to protrude into the concave groove path 1 by an appropriate length.

Reference numeral 6 indicates a passage for cooling water which is appropriately provided to pass through the inside of the mold table 2, so as to actively perform a cooling action.

To explain the operation of this device, molten lead a at a temperature of 300 CO to 500° C. is poured into the concave channel 1 from a molten lead source. As shown in the third figure, the tip of each ear 3a of the electrode plate group is immersed in the fluidized molten lead, and the flow of the fluidized molten lead constantly provides fresh heat to the ear group to raise the desired temperature. Then, while keeping the ear group 3 in that position, move the mold table 2 upward so that both weir walls 2b and 2b are exposed to the surface of the fluidized molten lead a, as shown in Figure 4. The internal concave portion 4 is made to protrude higher than the
Each lug 3 of the electrode plate lug group 3 is held in the molten lead a'
(a) is immersed to a predetermined depth, and in this state is left to cool or is cooled by cooling water. Thus, good solidified lead strap casting a without burrs conforming to the shape of the recess 4 inside the mold table 2 is obtained.
' is welded and formed as one body with the electrode plate lug group 3. Next, the electrode plate ears are removed and molded, and as shown in Figure 5, the cast strap and 1
The ship's belongings were obtained and the port arrival work was completed. According to the above method, since the electrode plate lug group 3 is not moved down to the vicinity of the flowing lead, the molten lead can be cooled quickly and there is no risk of burning out the separator between the lug groups. Incidentally, when the flowing lead a is dammed by the upward movement of the mold table 2, the flowing lead a can be made to flow through a bypass passage 7 provided on the side of the concave groove passage 1 as shown in the second figure.

8 indicates an opening/closing door.

FIG. 6 and FIG. 7 show a modified example, in which the mold table 2 has a concave groove path 1.
It was formed to have a concave portion 4 independent of the . That is, on the upper surface of the mold table 2, in addition to the two weir walls 2b, 2b, the two weir walls 2b,
A rectangular surrounding wall 2b, 2b, 2c, 2 that extends and projects upwardly from the longitudinal frame walls 2c, 2c connecting the 2b.
The mold stand 2 had a recess 4 surrounded by c. Thus, as in the above embodiment, both side wall surfaces la,
Regardless of la, even if it is moved upwards, it will serve as a template. Furthermore, according to this embodiment, gap passages lb, lb are provided on both sides of the mold table 2 between the two side walls la, la of the groove path 1, so that the mold table 2 can be moved upwardly. The molten lead a can continue to flow through the gap passages lb, lb, thereby eliminating the inconvenience of configuring a bypass path and temporarily stopping the flow of molten lead. Figure 8 shows that the mold table 2 is completely filled with flowing molten lead a.
A method is shown in which the plate lug group 3 is exposed above the surface of the plate and exposed to the atmosphere, and at the same time the electrode plate lug group 3 is also pulled upward from the tip immersion position.
Since the lead is not immersed, the molten lead in the mold table 2 solidifies more quickly.

In this way, according to the present device, the mold table 2 can be moved up and down,
Since the upper position can be appropriately determined, it is convenient that the solidification time of the molten lead accumulated in the mold table 2 can be appropriately set.

In this way, according to the present invention, the pair of weir walls are connected to the bottom wall.
Since the mold base provided on the body is provided on the bottom surface of the concave groove as a part of the concave groove so that it can be freely moved up and down into the concave groove, a good strap without burrs can be manufactured. Since the mold table is moved upward to immerse the electrode plate lug group to a predetermined depth, there is no need to move the electrode plate lug holding device in two stages, and the plate lug group is far away from the flowing molten metal. This has the effect that the strap molten metal can be cooled and solidified relatively quickly without damaging the separator.

[Brief explanation of the drawing]

FIG. 1 is a cut side view of an apparatus according to an embodiment of the present invention, FIG. 2 is a top view thereof, and FIGS. 3 to 5 are one example of the volumetric method.
FIG. 6 is a top view of a modified example, FIG. 7 is a skin-to-skin line cross-sectional view, and FIG. 8 is a cut side view showing another example of the welding method. 1... Concave groove path, 2... Mold stand, 2a...
・・Bottom wall, 2b, 2b・・・・Weir wall, 2c, 2c・
...Frame wall, 3...Pole plate ear group, 3a...
... Ear, 5 ... Piston pestle. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1. A welding device using a casting strap for a group of electrode plates for a storage battery, in which a pair of weir walls facing upstream and downstream are provided in a concave channel through which molten metal flows so as to be retractable. As a part of the concave groove path, a movable movable groove is provided on the bottom surface thereof, which is composed of the pair of weir walls and a vertically movable bottom wall, and has a concave portion inside which accommodates a group of electrode plate ears. A welding device for welding a battery plate lug group using a casting strap, which comprises a mold for casting a type strap, which is provided in the groove so that it can be freely projected by moving up and down. 2. The device according to claim 1, wherein the movable strap casting mold is of a type in which a recess is surrounded by a surrounding wall. 3. Claim 1 or 2, wherein the movable strap casting mold is of a type in which a concave portion is surrounded by a surrounding wall, and a space passage is provided between the frame mold and the concave groove path. The device described in. 4. After immersing the tip of the lug group of the storage battery electrode plate in the flow of the molten metal and raising the temperature of the lug group by the heat of the flowing molten metal, the movable strap casting mold table is moved upward to form the concave channel. The inner part is made to protrude and cut off from the flow of molten metal, and at the same time, the molten metal is retained in the concave part of the mold table, and the ears are immersed to a predetermined depth in the retained molten metal, and solidified in this state. A welding method using cast straps for electrode plate lug groups for storage batteries, characterized by the following.