JPS63171165U

JPS63171165U -

Info

Publication number: JPS63171165U
Application number: JP6662787U
Authority: JP
Priority date: 1987-04-30
Filing date: 1987-04-30
Publication date: 1988-11-08

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化した一実施例を示す
ミシン頭部の正面図、第２図はその側面図、第３
図は上糸繰り出し装置の部分断面図、第４図はそ
の一部破断正面図、第５図は上糸繰り出し装置の
制御回路を示すブロツク図、第６図はその作用を
示すフローチヤート図である。図において１はミシンアーム、２は頭部、７は
天秤、１３はあご部、１４は上糸繰り出し装置、
１５はサーボモータ、１７は糸巻体、Ｔは上糸で
ある。 Fig. 1 is a front view of a sewing machine head showing an embodiment of this invention, Fig. 2 is a side view thereof, and Fig. 3 is a front view of a sewing machine head showing an embodiment of this invention.
The figure is a partial sectional view of the needle thread letting-out device, FIG. 4 is a partially cutaway front view thereof, FIG. 5 is a block diagram showing the control circuit of the needle thread letting-out device, and FIG. 6 is a flowchart showing its operation. be. In the figure, 1 is a sewing machine arm, 2 is a head, 7 is a thread take-up, 13 is a jaw, 14 is a needle thread feeding device,
15 is a servo motor, 17 is a thread winding body, and T is an upper thread.

Claims

[Scope of utility model registration request]

A thread take-up lever 7 is arranged in front of the head 2 at the tip of the sewing machine arm 1, and a needle is arranged at the lower part of the head 2. A needle thread pay-out device 14 for paying out the needle thread T toward the take-up lever 7 is disposed in the jaw portion 13, and the needle thread pay-out device 14 is connected to a motor 15 built in the jaw portion 13 and a head 2. 1. A sewing machine comprising: a thread winding body 17 located on the front surface of the sewing machine, around which an upper thread T is wound, and for letting out the upper thread T by the rotation of the motor 15.