JPS6034225B2 - Welding device for battery electrode plate ears and cast straps - Google Patents

Description

[Detailed Description of the Invention] Conventionally, there is a cast-on strap method as a device for welding a cast strap to a battery electrode group. Since the selvedge is soaked in the welding wound and allowed to solidify in that state, the accumulated molten metal tends to cool during the welding process, and it is relatively difficult to maintain it at the required welding temperature, which is extremely difficult. Welding to the casting strap tends to occur when the surface of the plate edge is difficult to melt (and lead oxide and active material are attached to the surface), and therefore the welding between the two tends to be poor. Ta.

Therefore, it is conceivable to keep the molten metal poured into the mold at a relatively high temperature by taking cooling into consideration in advance, but this tends to result in more lead oxide being produced.

The present invention eliminates the conventional welding method, immerses the electrode plate ears in the flow of molten metal, constantly melts the surface of the plate with freshly supplied molten metal, raises the temperature, and oxidizes the adhesion to the surface. After removing adhesion of lead and active substances, a mold for strap casting is formed, and the molten metal in the mold solidifies to complete the welding of the ear group and the casting strap. The present invention provides a new welding device that implements a new casting method that can perform good welding even with molten lead of 300 to 500 qC. a concave groove path, a lifting device for the electrode plate group provided above the groove path, and a strap within the groove path that receives the anode lug group and the cathode lug group of the electrode plate group held by the lift device. A pair of weir plates for the anode ear group and/or the cathode ear group are disposed on the upstream side and the downstream side of the ear group with a casting space, and the pair of weir plates are arranged so as to cross the groove path. It is characterized in that it consists of a driving device that can be driven forward and backward, and that when the weir plate pair moves forward, a strap casting mold is formed inside the weir plate pair.

Furthermore, a second invention provides a welding layer for carrying out the above method continuously and smoothly, and in the above apparatus, further, the groove path is a groove path for circulation circulation, In addition, the concave port channel is provided with a shutter that can be opened and closed and a molten metal circulation side channel on the upstream side of the strap casting part.

Next, one example of the device of the present invention will be explained with reference to the accompanying drawings. In the drawings, reference numeral 1 indicates a tank that is a source of flaws and contains molten metal a obtained by melting a pot 6 (containing lead alloy). Lead is heated to a molten state at a temperature of 300 to 500 oo. The lower end of the tank 1 is connected via an on-off valve 3 to an annular concave channel 4 made of a conduit having a U-shaped cross section. A pump 5 is interposed at a suitable location in the concave groove passage 4 to circulate and flow the melt a flowing out from the burn source in the tank 1. located above the concave groove path 4;
The figure shows an elevating device that fixes and holds the electrode plate group B in a fixed layer and moves it up and down.
Arms 9, 9 extending from the holder 7 that slide on the pair of guide villages 8, 8, and air piston devices 10, 1 that move both arms up and down.
0, a lectern 23 on which an anode plate lug group b-1 and a cathode plate lug group b-2 arranged on both sides of the electrode plate group B are placed facing downward. Below this elevating device 6, there are strap casting spaces 11, 11 in the concave groove path 4 that receive the anode plate lug group b-1 and the cathode plate lug group b-2, respectively, during downward movement. Each pair of weir plates 12, 12, 12, 12 are disposed to cross the concave groove path 4 and to be freely retractable from the bottom surface thereof. 13 is each weir plate 12
shows an air piston connected to the lower end of the

Thus, when each pair of weir plates 12, 12 is advanced into the channel 4, for example, as shown in FIGS. Each strub casting mold 1 defined by a wall 4a and both sides 4b, 4b
1 is formed. As shown in FIGS. 3 and 4, a mold recess 11a having a predetermined shape, which will become the lug of the casting strap, is previously formed on the bottom surface of the recessed groove 4 in which the mold 11 is formed. Further, at least one groove bypass passage 4' is provided in the groove passage 4, and the groove bypass passage 4' is branched and detoured to merge on the upstream and downstream sides of the lifting device 6, and at least one groove bypass passage 4' is provided at the branch point on the upstream side. A door 14 device is provided which alternately opens and closes the groove bypass passage 4' and the groove bypass passage 4' as shown by the arrows. As shown, an additional door 14 device is provided at the downstream junction. Furthermore, it is preferable that the above-mentioned apparatus is provided with the following equipment. That is, each weir plate 12 has a heat insulating plate 15 built therein and a cooling water through hole 16 built therein.

Reference numeral 17 indicates a flexible water supply pipe connected to the cooling water through hole 16.

A cooling water through hole 16 and a water supply pipe 17 are also provided on the bottom surface of the mold 11. The mold 11 is provided on the bottom wall and side wall of the concave groove path 4.
A heater 18 is provided along the length of the groove except for the groove, and is connected to a thermostat 19 inserted into the flaw a flowing in the concave groove passage 4, and in conjunction with this, the heating is carried out in a timely manner. Keep the melt a at a predetermined temperature. 2. A heat insulating plate 21 that covers the entire outer circumference of the concave groove path 4 is placed upstream of the branching point of the concave groove path 4, and senses a predetermined drop in the melting liquid level to operate the on-off valve 3. The valve 3 was opened so that molten metal from the tank 1 was newly supplied to the circulation path 4, and the valve was closed at a predetermined height. 22 indicates a filter.

To explain the operation of the above device, 300 to 500
0,000 to the depth necessary for welding the electrode plate tabs, for example, 5 to 1
A quantity having a depth of five ribs was supplied to the circulation channel 4, and the pump 5 circulated it. In this case, the bypass passage 4' is closed by the door 14 as shown by the solid line. This 3
00 to 50,000, the lifting device 6 is lowered, and the anode plate lug group b-1 and cathode plate lug group b-2 of the electrode plate group B are immersed in the melted damage. The temperature of each ear was raised to 1,500 to 30,000 degrees by melt flow, and the lead oxide on the surface was washed away as the ear surface melted, and pbo2
After the selvedge has been removed and has a good surface, each pair of weir plates 12, 12, 12, 12 is moved upward by each piston 13 and protruded forward into the concave groove passage 4, so that the molten metal accumulates inside. Form molds 11 and 11, respectively. In this state, each pair of weir plates 12, 12 and the cooling water through holes 16,
The water passing through 16 causes the accumulated molten metal in each mold il to quickly solidify, creating a casting strap A that is well fused to each ear group. In this case, the heat insulating plate 15 of the weir plate 12 prevents the molten metal outside the mold 11 from solidifying, protects the molten metal in a good state, and helps maintain smooth flow thereafter. Next, after the above-mentioned welding, the electrode plate group is moved upward to obtain an electrode plate group in which the ears b-1 and b-2 are connected as a pair by casting straps A, respectively. During the above operation, generally, the doors 14, 14 are operated in synchronization with the upward movement of each piston 13 to the position shown by the chain line, and the flow of the molten metal is detoured to the bypass passage 4' side. At the same time, in the welding step, the welding can be performed in a good manner without flowing into the concave groove path 4.

Next, at the same time as the above-mentioned product electrode plate group is pulled up, each weir plate 12 is moved downwardly by each air piston 13 to be flush with the bottom surface of the concave groove passage 4, and at the same time, the door 14 , 14 were returned to their original positions, and the molten metal was again allowed to pass through the weir plate 4 on the mirror welding side, so that the next welding operation could be performed continuously. Even if the amount of circulating melt a decreases and the liquid level drops by repeating such welding work, the thermostat 19 operates to open the valve 3 when the liquid level drops to a certain level, and new molten metal is supplied into the circulation path 4. When a certain rising liquid level is reached, the thermostat 13 closes the valve 3.
is closed, thus obtaining a given volume of melt flow. Incidentally, the filter 22 intervenes in the melt flow, thereby helping to remove lead oxide and other fine foreign substances in the melt, and thus leaving the lacquer as a good molten metal from which these foreign substances are removed. The dressing work is carried out.

In the drawing, the flaw source 4 is of a gutter type with an open upper surface over its entire length, but it may be provided with a cover as appropriate, or it may be replaced with a conduit having a rectangular cross section. Only the part shall be open on the top surface. In addition, the bypass concave groove path 4'
A lifting device and a mirror welding device similar to those described above can be provided on the sides, and in that case, the door 14 can be opened and closed on one side or the other by alternately opening and closing the concave channel 4 or 4'. The welding operation may be performed continuously to double the production amount in a certain period of time. Further, in the above embodiment, the pair of weir plates were moved vertically to move forward and backward across the groove passage 4, but instead of moving vertically, the side walls of the groove passage 4 were moved horizontally. 4b, it may be made to be able to freely move forward and backward across the inside of the concave groove path 4. As described above, according to the present invention, there is provided a flaw source, a melt concave groove connected to the flaw source to create a molten metal flow, an electrode plate group lifting device on the upper surface thereof, and an electrode plate group elevating device in the concave groove. Since the weir plate and the driving device for moving the weir plate forward and backward within the concave groove are provided with a gap that accommodates the lug group, welding of the electrode plate lug group and the casting strap using a flow of molten metal is possible. It is possible to carry out the welding at a relatively low temperature, and has the effect of obtaining a high-quality welded product.In addition, it is a circulation channel, and a part of the channel is provided with a bypass channel that branches from there, and an opening/closing door is installed at the branch point. When provided, it has the effect that the welding process can be carried out smoothly without stopping the circulation of the welding material during the welding process.

[Brief explanation of the drawing]

Fig. 1 is a front view of an example of the present invention with a part removed, Fig. 2 is a top view thereof, Fig. 3 is a sectional view taken along line A-A of the main part, and Fig. 4 is its B-B. A line cutting cross-sectional view is shown. 1... Port hot water source, 4... Circulation channel, 4
'... Bypass concave groove path, B... Pole plate group, b-1, b-2... Pole plate lug group, 6...
- Elevating device, 12... Weir plate, 13... Piston, 14... Door. Figure 2 Figure 1 Figure 3 Figure M

Claims (1)

[Claims] 1. A molten metal source, a molten metal distribution channel connected to the molten metal source,
A lifting device for the plate group provided above the concave groove path, and a strap casting space provided in the concave groove path for receiving an anode lug group and/or a cathode lug group of the electrode plate group held by the lifting device. A pair of weir plates for the anode ear group and/or the cathode ear group are arranged on the upstream side and the downstream side of the ear group, and the pair of weir plates can be moved forward and backward across the groove path. 1. A welding device for welding a battery plate lug group and a casting strap, comprising a driving device for driving the weir plate pair, and a strap casting mold is formed inside the weir plate pair as the weir plate pair moves forward. 2. A molten metal source, a molten metal circulation groove connected to the molten metal source, a lifting platform device for a group of electrode plates provided above the groove, and placement of the lifting device in the groove. A pair of strap casting spaces for receiving the anode and/or cathode ears of the electrode plate group are disposed on the upstream and downstream sides of the ears, respectively, for the anode and/or cathode ears. It consists of a weir plate and a drive device that drives the weir plate pair forward and backward across the concave groove path, and as the weir plate pair moves forward, a strap casting mold is formed inside the weir plate pair. A welding device for welding battery electrode plate lug groups and casting straps, further comprising a door that can be opened and closed and a side path for circulating molten metal on the upstream side of the elevating device in the annular concave groove path.