JPS59151585U

JPS59151585U - sewing machine thread cutting device

Info

Publication number: JPS59151585U
Application number: JP4654883U
Authority: JP
Inventors: 都筑　伸之
Original assignee: ジューキ株式会社
Priority date: 1983-03-30
Filing date: 1983-03-30
Publication date: 1984-10-11
Also published as: JPS618860Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図はこの考案の糸切り装置の斜視　　　　
′図である。１・・・・・・釜軸、２・・・・・・クラッチ体、４・
・・・・・第１糸切りカム、５・・・・・・糸切り軸、
６・・・・・・可動刃、１２・・・・・・固定刃、１３
・・・・・・スプリング、１５・・・・・・第１復帰カ
ム、１６・・・・・・第２糸切りカム、１７・・・・・
・第２復帰カム。Figures 1 and 2 are perspective views of the thread cutting device of this invention.
'Figure. 1... Hook shaft, 2... Clutch body, 4...
...First thread trimming cam, 5...Thread cutting shaft,
6...Movable blade, 12...Fixed blade, 13
...Spring, 15...First return cam, 16...Second thread trimming cam, 17...
-Second return cam.

Claims

【実用新案登録請求の範囲】主軸に連動して回転する釜軸と、釜軸に遊嵌し釜軸の軸線に沿う一方向移動によって釜軸
に連結し逆方向移動によって連結が解除されるクラッチ
体と、釜軸に回動可能に遊嵌しクラッチ体の回動に連動して回
転する第１糸切りカムと、釜軸に支持した第１復帰カムと、釜軸と平行にしかも回動可能に機枠に支持した糸切り軸
と、機枠に固定した固定刃と、釜軸に固定した缶体の外周に沿って回転するよう釜軸に
回動可能に支持し、糸切り軸の回動に連動し固定刃と協
働して縫糸を切断する切断位置と固定刃から離隔する離
隔位置との間を移動可能な可動刃と、常には可動刃を固定刃から離隔する離隔位置に移動する
ように作用するスプリングと、゛釜軸の゛回転により第
１糸切りカムに係合し可動刃をスプリングに抗して切断
位置に移動した後に第１糸切りカムとの係合を解除する
よう糸切り軸に固定した第２切りカムと、第２糸切りカムと第１糸切りカムとの係合が解除されｈ
後に第１復帰カムの回動により可動刃を離隔位置方向へ
移動するように糸切り軸に固定した第２復帰カムと、よりなるミシンの糸切り装置。[Claims for Utility Model Registration] A hook shaft that rotates in conjunction with the main shaft, and a clutch that loosely fits into the hook shaft and connects to the hook shaft by moving in one direction along the axis of the hook shaft, and is disconnected by moving in the opposite direction. a first thread trimming cam that rotatably fits loosely on the hook shaft and rotates in conjunction with the rotation of the clutch body; a first return cam supported on the hook shaft; and a first return cam that rotates parallel to the hook shaft. A thread cutting shaft is supported on the machine frame, a fixed blade is fixed on the machine frame, and a thread cutting shaft is rotatably supported on the hook shaft so as to rotate along the outer periphery of the can fixed on the hook shaft. A movable blade that can be moved between a cutting position where it cuts sewing thread in conjunction with the rotation and cooperates with a fixed blade, and a remote position where it is separated from the fixed blade, and a remote position where the movable blade is always separated from the fixed blade. A spring that acts to move the hook engages with the first thread trimming cam by rotating the hook shaft, and after the movable blade moves to the cutting position against the spring, it disengages from the first thread trimming cam. The engagement between the second thread cutting cam fixed to the thread cutting shaft and the first thread cutting cam is released so that h
A thread trimming device for a sewing machine comprising: a second return cam fixed to a thread trimming shaft so that the movable blade is later moved toward a separated position by rotation of the first return cam;