JPS6083585U

JPS6083585U - Cycle sewing machine control device

Info

Publication number: JPS6083585U
Application number: JP17807283U
Authority: JP
Inventors: 章竹内
Original assignee: ブラザー工業株式会社
Priority date: 1983-11-16
Filing date: 1983-11-16
Publication date: 1985-06-10

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 the drawing]

第１図は本考案装置の施されるサイクルミシンの概略構
成図、第２図は糸切れ検知手段およびカッター駆動機構
の説明図、第３図はカッター下降時に作動するローラ押
圧機構の平面図、第４図〜第９図は本考案に係る装置に
使用されるエア制御系の回路図、第１０図は本考案装置
全実施した際゛のタイミングチャート図である。Fig. 1 is a schematic configuration diagram of a cycle sewing machine to which the device of the present invention is applied, Fig. 2 is an explanatory diagram of the thread breakage detection means and cutter drive mechanism, and Fig. 3 is a plan view of the roller pressing mechanism that operates when the cutter is lowered. 4 to 9 are circuit diagrams of the air control system used in the apparatus according to the present invention, and FIG. 10 is a timing chart when the apparatus according to the present invention is fully implemented.

Claims

[Claims for Utility Model Registration] Start/stop means 12 for starting at the start of a sewing cycle and stopping after the end of the cycle; The cycle sewing machine is equipped with a cloth presser foot 18 that can be raised and lowered to apply a feeding motion to the cloth, and a thread breakage detection means 20 that detects thread breakage during sewing in a thread supply system extending from a thread supply source to the needle 16. A starting air cylinder C□ for switching the starting/stopping means 12 to the sewing machine starting position, a presser foot lifting drive air cylinder C2 for lifting the presser foot 18 from the surface of the bed 14, and a single manual operation means. 114, and an air control means for controlling the operation of both the air cylinders C□ and C2 based on the operation of the manual operation means 114, the starting air cylinder C1 in the air control means.
During the first air control system for
a mechanically responsive first valve V1 for actuating the starting air cylinder C□ based on the operation of step 4; In the second air control system, there is provided a mechanically responsive second air control system that operates in the direction of lowering the presser foot 18 based on the operation of the manual operation means 114 (and also operates in the direction that raises the presser foot 18 when the operation is released). valve V2, and the activation/stopping means 1 based on the operation of the activation/stopping means 12.
When the sewing machine is in the starting state, the starting/stopping means 12 acts in the direction of lowering the presser foot 18, and when the sewing machine is in the stopped state, the third mechanically responsive third part works in the direction of raising the presser foot 18. a valve v3;
2 works in the direction of lowering the presser foot 18 when the sewing machine is started, and the presser foot 18 only works when the thread breakage detection means 20 does not detect thread breakage and the sewing cycle ends in a normal state. a mechanically or air-responsive fourth valve V4 acting in the direction of raising the second, third and fourth valves V2. A control device for a cycle sewing machine characterized in that said presser foot 18 is driven upward only when V3 and V4 are both operated in the direction of raising the presser foot 18.