Paper elimination in the production of battery plates
View Patent ↗A method and apparatus for continuously producing pasted positive and negative electrode plates from pasted lead or lead alloy expanded, punched or cast metal mesh strip for use in lead-acid batteries without the use of paper barriers. The heating of cutting devices such as roll-mounted die-cutters to a predetermined temperature range of at least about 150° C., preferably about 160 to 300° C., and more preferably about 180 to 210° C., eliminates sticking of the paste on the pasted metal mesh strip to the cutting devices and obviates the need for the paper barriers.
1. An apparatus for continuously cutting unpapered freshly pasted expanded, punched or cast lead or lead allay mesh strip into paperless battery plates comprising a cutting roll having cutting blades mounted thereon and an opposed anvil roll for cutting the pasted lead or lead alloy mesh strip therebetween into equal lengths, means for journaling said rolls in operative abutment with each other in a supporting frame, an index mechanism and conveying means for continuously passing the freshly pasted lead or lead alloy mesh strip between the opposed rolls, and heating means for heating the cutting blades, index mechanism, and the cutting roll and the opposed anvil roll to a temperature in the range of about 160 to 300° C.
2. An apparatus as claimed in claim 1 in which said heating means are operative for heating the cutting blades, index mechanism and the opposed rolls to a temperature in the temperature range of about 180 to 210° C.
3. An apparatus as claimed in claim 1 in which the heating means are mounted axially in each of the rolls along the length of the rolls for uniformly heating the cutting blades and the rolls.
4. An apparatus as claimed in claim 3 in which the heating means are electrical heaters mounted axially in each of the rolls in electrical communication with a power supply.
5. An apparatus for cutting pasted expanded continuous lead or lead alloy mesh strip into paperless battery plates for lead-acid batteries comprising a cutting roll having cutting blades mounted thereron and an opposed anvil roll for cutting the pasted lead or lead alloy mesh strip therebetween into equal lengths, means for journaling said rolls in operative abutment with each other in a supporting frame, an index mechanism and conveying means for continuously passing the freshly pasted lead or lead alloy mesh strip between the opposed rolls, and electric cartridge heaters mounted axially on each roll for uniformly heating the cutting blades, index mechanism and opposed rolls to a temperature in the range of about 160 to 300° C.
6. An apparatus as claimed in claim 5 in which said heating means are operative for heating the cutting blades, index mechanism and the opposed rolls to a temperature in the temperature range of about 180 to 210° C.