Power transmission unit for electrode cutting apparatuses

Patent metadata

Field	Value
Publication number	US-12539636-B2
Application number	US-202117922238-A
Country	US
Kind code	B2
Filing date	Jul 21, 2021
Priority date	Jul 24, 2020
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

A power transmission unit for electrode cutting apparatuses includes a lift block, an upper frame, a connection shaft, and an elastic member. The lift block includes a structure configured to be mounted to a main frame so as to be movable upwards and downwards. An upper cutter holder is mounted to the upper frame and is fixed to an upper cutter configured to cut an electrode sheet. The connection shaft is configured to connect the lift block and the upper frame to each other. The elastic member is located at the upper part of the connection shaft.

First claim

The invention claimed is:

1 . A power transmission unit for electrode cutting apparatuses, the power transmission unit comprising:
a lift block comprising a structure configured to be mounted to a main frame so as to be movable upwards and downwards; an upper frame; an upper cutter device mounted to the upper frame and configured to cut an electrode sheet; a first connection shaft configured to connect the lift block and the upper frame to each other; and an elastic member located at an upper part of the first connection shaft and within the lift block, wherein the lift block and the upper frame are fastened to each other in a state in which the elastic member and the first connection shaft are disposed therebetween, whereby the upper frame and the lift block are coupled to each other with a gap therebetween, wherein the first connection shaft is coupled to the lift block with a close tolerance in a vertical direction parallel to a vertical movement axis of the lift block relative to a fixed lower cutter device and the first connection shaft is loosely coupled to the lift block by the elastic member, and wherein the power transmission unit is configured such that movement of the lift block relative to the fixed lower cutter device along the vertical movement axis produces a corresponding movement of the upper frame in the vertical direction, and such that when the vertical movement axis has a deviation from an initially set position, the deviation is corrected by the elastic member, such that only the movement of the lift block along the vertical movement axis is transmitted to the upper frame and the upper cutter device.

2 . The power transmission unit according to claim 1 , wherein an elastic member is a spring or rubber.

3 . The power transmission unit according to claim 1 , wherein the first connection shaft is inserted into and thereby coupled to a recess extending into the upper frame.

4 . The power transmission unit according to claim 1 , wherein the lift block includes a recess configured to receive the first connection shaft and an elastic member.

5 . The power transmission unit according to claim 4 , wherein the upper frame is fastened to the lift block by sliding in a state in which the first connection shaft is coupled to the upper frame.

6 . The power transmission unit according to claim 1 , further comprising a fixing screw coupled to the lift block, wherein the first connection shaft is loosely coupled to the lift block via the elastic member located at a lower part of the fixing screw.

7 . The power transmission unit according to claim 1 , further comprising a second connection shaft; and
a fixing frame fixed to the lift block and disposed on the first connection shaft and the second connection shaft, wherein the elastic member is disposed at an upper part of the fixing frame.

8 . The power transmission unit according to claim 7 , wherein a pressing force and an elastic force of the elastic member with respect to the fixing frame are equally applied to the first connection shaft and the second connection shaft.

9 . The power transmission unit according to claim 1 , wherein the lift block is mounted to the main frame.

10 . The power transmission unit according to claim 1 , wherein the upper cutter device includes an upper cutter holder and an upper cutter fixed to the holder and configured to cut the electrode sheet.

11 . A method of assembling the power transmission unit according to claim 1 , the method comprising:
(a) mounting a lift block to a main frame; (b) fixing a connection shaft to an upper frame; (c) fastening the upper frame to the lift block by relative sliding between the connection shaft and the lift block; (d) disposing an elastic member at an upper part of the connection shaft through a through-hole of the lift block; and (e) fastening a fixing screw to the through-hole of the lift block to fix the elastic member to the lift block.

12 . The method according to claim 11 , wherein the fastening of the upper frame to the lift block by the relative sliding is performed in a state in which a fixing frame is disposed in a recess formed in the lift block.

Assignees

• Lg Energy Solution Ltd

Inventors

• Lee Hyeon Jin
• Park Sin Young
• Park Dong Hyeuk
• Kim Sang Wook

Classifications

• B26D1/045 Primary

  for thin material, e.g. for sheets, strips or the like · CPC title

• B26D7/2614 Primary

  Means for mounting the cutting member · CPC title

• B26D1/04

  having a linearly-movable cutting member (B26D1/46, B26D1/547 take precedence) · CPC title

• H01M4/04

  Processes of manufacture in general · CPC title

• B26D2001/0066

  having shearing means, e.g. shearing blades, abutting blades · CPC title