Winding device

A winding device, comprising:

• a first unwinding equipment, a second unwinding equipment, a third unwinding equipment, and a fourth unwinding equipment, respectively configured for outputting a first diaphragm, a cathode pole piece, a second diaphragm, and an anode pole piece;
• a merging equipment, arranged downstream of the first unwinding equipment, the second unwinding equipment, the third unwinding equipment, and the fourth unwinding equipment, and configured for merging the first diaphragm, the cathode pole piece, the second diaphragm, and the anode pole piece as they pass through the merging equipment, so as to form a combined material strip;
• a first pole-piece-processing equipment, arranged between the second unwinding equipment and the merging equipment, configured for cutting off the cathode pole piece as it passes through the first pole-piece-processing equipment, separating from each other a first upstream cut-off end and a first downstream cut-off end both formed upon cut-off of the cathode pole piece, and connecting the first upstream cut-off end and the first downstream cut-off end with a tape;
• the tape between the first upstream cut-off end and the first downstream cut-off end forming a first tape portion;
• a winding equipment, comprising a turret and at least two winding needles which comprises a first winding needle and a second winding needle and are mounted on the turret, the turret rotatably provided so as to drive each of the at least two winding needles to pass by a first station and a second station sequentially, and the first station located downstream of the merging equipment;
• and
• a guiding roller and a cutting-off equipment, both arranged between the first station and the second station, the cutting-off equipment configured for cutting off the first diaphragm, the first tape portion on the cathode pole piece, the second diaphragm, and the anode pole piece together as they pass through the cutting-off equipment;
• wherein, when the first winding needle located at the first station rotates to the second station along with the turret, the second winding needle rotates to the first station, and the combined material strip, which is located between the first station and the second station, winds through the guiding roller;
• the guiding roller positioning the combined strip to enable one of the at least two winding needles located at the first station to hold the combined material strip,
• wherein the first pole-piece-processing equipment comprises from upstream to downstream a first holding-transporting assembly, a first cutting assembly, a first gluing assembly, and a second holding-transporting assembly disposed sequentially;
• both the first holding-transporting assembly and the second holding-transporting assembly are configured for holding the cathode pole piece upon passing therethrough, the first cutting assembly being configured for cutting off the cathode pole piece upon passing through the first cutting assembly, and the cut off cathode pole piece forming a first upstream cut-off end and a first downstream cut-off end;
• wherein the first holding-transporting assembly and the second holding-transporting assembly are configured to move downstream at the same time to drive the first upstream cut-off end and the first downstream cut-off end respectively to move from the cutting assembly to the first gluing assembly, while separating the first upstream cut-off end and the first downstream cut-off end from each other, and the first gluing assembly is configured for bonding the first upstream cut-off end to the first downstream cut-off end with the tape.