JPS58145170U

JPS58145170U - Sewing machine thread cutting mechanism

Info

Publication number: JPS58145170U
Application number: JP4258082U
Authority: JP
Inventors: 勝美小関
Original assignee: ジューキ株式会社
Priority date: 1982-03-26
Filing date: 1982-03-26
Publication date: 1983-09-30

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は針板を谷部の略斜視図、第２図は糸切りメスの
鉤部への糸捕捉直前の状態を示す斜視図、第３図は上下
送りミシンにおける送り運動と糸切りメスの運動との状
態を示すモモ−ジョンダイヤグラムである。図中、４は針板、２は送り歯、７は阻止体の一例として
の突出部、８は外釜、１２は中釜、１３は糸切りメスで
ある。Fig. 1 is a schematic perspective view of the throat plate at the trough, Fig. 2 is a perspective view showing the state of the thread trimming knife just before the thread is caught in the hook, and Fig. 3 is the feed movement in a vertical feed sewing machine and the thread trimming knife. 2 is a motion diagram showing the state of the motion of In the figure, 4 is a throat plate, 2 is a feed dog, 7 is a protrusion as an example of a blocking body, 8 is an outer hook, 12 is an inner hook, and 13 is a thread trimmer.

Claims

[Scope of Claim for Utility Model Registration] A needle that has a needle thread and moves up and down; a thread ring catcher that has a bobbin thread or looper thread that cooperates with the needle to form a stitch; and a hook that forms a slope on the tip side. When the thread trimming knife moves back and forth, the needle side thread of the needle thread loop on the bottom surface of the throat plate that connects the stitch to the needle and the thread of the thread ring catcher have slopes. In a sewing machine that engages the threads, pushes them to one side, and then captures them in the hook and cuts the captured threads during the backward movement, the thread to be captured is A thread trimming mechanism for a sewing machine in which a blocking body is provided at the front in the direction of thread movement so as to prevent the thread trimming knife from moving in the forward direction.