Cutting device of lithium battery pole piece

Abstract

The invention discloses a cutting device of a lithium battery pole piece. The cutting device of the lithium battery pole piece comprises a fixing cutter rest, a movable cutter rest and a driving device, wherein a pressing block, a first polished shaft, a first compression spring and a fixing cutter are arranged on the fixing cutter rest, the first compression spring sleeves the first polished shaft, the two ends of the first spring abut against the fixing cutter rest and the pressing block correspondingly, the side face, facing the pressing block, of the movable cutter on the movable cutter rest is an extrusion surface, and a cutting edge is arranged at the bottom of the extrusion surface; and a gap for the pole piece to pass is formed between the pressing block and the fixing cutter and amovable cutter, the driving device is used for controlling the movable cutter to move, when the movable cutter moves towards the direction of the pressing block until the pole piece is pressed on thepressing block through the extrusion face, the pole piece is cut off under the action of the cutting edge of the movable cutter and the fixing cutter. The movable cutter and the pressing block of anelastic structures can ensure that the pole piece is clamped without generating relative displacement, additionally, the shear type cutter point is formed between the cutting edge of the movable cutter and the fixing cutter, so that the cutting quality of the pole piece can be guaranteed while the pole piece can be effectively prevented from dusting.

Description

technical field [0001] The invention relates to the technical field of lithium battery winding equipment, in particular to a lithium battery pole piece cutting device. Background technique [0002] The cylindrical lithium battery sheet-winding integrated equipment is used for sheet-making and winding of battery cells. After the positive and negative pole pieces are unwinded, lugs welded and protective glue applied, they are input to the manipulator to complete the conveying and cutting of the pole pieces. [0003] The existing cylindrical lithium battery production and winding integrated equipment adopts the pole piece flying cutting process. When the pole piece is cut, there is no need to stop the transportation of the pole piece. The cutter mechanism and the pole piece move at the same speed and cut off the pole piece. However, when the existing pole piece cutting device cuts the pole piece, relative movement may occur when the pressing block and the fixed knife clamp the...

AI Technical Summary

Problems solved by technology

However, when the existing pole piece cutting device cuts the pole piece, relative movement may occur when the pressing block and the fixed knife clamp the pole piece, which will rub the pole piece, thereby causing problems such as powder falling, and the pole piece incision is also prone to burrs lead to battery failure

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