JPS60182971U

JPS60182971U - Sewing machine needle thread supply device

Info

Publication number: JPS60182971U
Application number: JP6399885U
Authority: JP
Inventors: 飯村　郁朗; 佐久間　邦晴
Original assignee: ジューキ株式会社
Priority date: 1985-04-27
Filing date: 1985-04-27
Publication date: 1985-12-04
Also published as: JPS6125747Y2

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

[Brief explanation of drawings]

第１図は本願装置の斜視図、第２図は電気回路ノフロッ
ク図、第３図はタイムチャート、第４．−５図は作用説
明図である。２・・・第一保持手段、３・・・第二保持手段、１１・
・・揺動体、１４・・・繰り出し腕、１５・・・駆動装
置（カム体）、２７・・・繰り出し検出装置、２８・・
・位置検出装置、３０・・・設定装置。FIG. 1 is a perspective view of the device of the present invention, FIG. 2 is an electric circuit nof lock diagram, FIG. 3 is a time chart, and FIG. Figure-5 is an explanatory diagram of the action. 2...First holding means, 3...Second holding means, 11.
... Rocking body, 14... Feeding arm, 15... Drive device (cam body), 27... Feeding out detection device, 28...
-Position detection device, 30...setting device.

Claims

[Claims for Utility Model Registration] The needle thread take-up lever and the needle thread supply source are arranged so as to be relatively spaced apart from each other in the forward and forward directions in the needle thread supply direction on the needle thread path, and act to prevent the needle thread from passing through. First and second holding means (2, 3
), a feeding body 9 for increasing the length of the needle thread path between the holding means after increasing during the loosening period of the needle thread by the thread take-up, and increasing the length of the needle thread path between the holding means. A feed-out detection device that displaces in proportion to the length of the needle thread fed out by the proportional interlocking body or the feed-out arm, and generates a thread amount signal corresponding to the amount of displacement, and a balance that identifies the main shaft when the needle thread is relaxed. a position detection device 28 that detects a rotation angle and generates a position signal; a setting device 30 that can generate a setting signal corresponding to the length of needle thread required to form one stitch in accordance with different sewing conditions; A comparator circuit 31 that compares the thread amount signal and the set signal and generates a match signal when they match, and a first holding means located before the feeding arm in the needle thread supply direction are always kept inactive and related to the match signal. the second holding means is always active and inactive in relation to the position signal and before the start of the tensioning phase of the needle thread by the thread take-up; In the needle thread supply device, the needle thread supply device is provided with a control circuit for controlling the operation so that the required amount of thread is paid out from the bobbin winder each time one stitch is formed, and the needle thread path between the actuating means is A rocking body 11 that reciprocates with the sole stroke in the direction crossing the rocking body 11, and a rocking body 11 that always moves together with the rocking body and moves only by the rocking body by engagement with the needle thread when the entrainment means is activated. A needle thread supply device for a sewing machine, characterized in that a feeding body is constituted by a feeding arm 14 rotatably supported by a rocking body with an elastic body 13 interposed therebetween.