JPH0441371U

JPH0441371U -

Info

Publication number: JPH0441371U
Application number: JP8063990U
Authority: JP
Priority date: 1990-07-31
Filing date: 1990-07-31
Publication date: 1992-04-08
Anticipated expiration: 2005-07-31
Also published as: JPH088773Y2

Description

[Brief explanation of the drawing]

第１図は本考案になるボタン縫製用ミシン装置
の前方部を示した斜視図、第２図Ａ，Ｂは糸寄せ
部材の移動機構の平面図及び側面図、第３図は糸
寄せ部材を往復動させる機構の正面図、第４図は
糸寄せ部材の拡大図、第５図Ａ〜Ｈは、ミシン針
の各位置における動作説明図である。１……ボタン、４……生地、２０……ミシン針
、２０ｂ，２２ｃ……ループ、２２……糸寄せ部
材、２２ａ……糸寄せ突起、４０……ルーパー。 Fig. 1 is a perspective view showing the front part of the sewing machine device for sewing buttons according to the present invention, Figs. 2A and B are a plan view and a side view of the moving mechanism of the thread shifting member, and Fig. 3 shows the thread shifting member. FIG. 4 is an enlarged view of the thread shifting member, and FIGS. 5A to 5H are explanatory diagrams of the operation of the sewing machine needle at each position. 1... Button, 4... Fabric, 20... Sewing needle, 20b, 22c... Loop, 22... Thread shifting member, 22a... Thread shifting projection, 40... Looper.

Claims

[Scope of Claim for Utility Model Registration] 1. In a button sewing machine device that sews buttons onto fabric by single-thread chain stitching, a thread guide member that is disposed between the throat plate and the looper and pulls the thread in a predetermined direction according to the needle movement of the sewing machine. a rotating shaft for rotating the looper; and a rotating shaft for reciprocating the thread shifting member as the looper rotates in a first direction toward the sewing machine needle in a direction perpendicular to the looper rotating shaft and a second direction opposite thereto. a mechanism, forming a thread shifting protrusion on the thread shifting member that is inclined between the rotating shaft direction and the first direction, and moving the thread shifting member in the second direction after forming the loop of the first stitch; The sewing machine needle pulls the thread from the front side of the thread guide projection to the rear side, and then when the thread guide member moves in the first direction to form the loop of the second stitch, the sewing machine needle moves the thread to the rear side. A sewing machine device for button sewing, characterized in that the first stitch is passed through the front side of the loop of the first stitch. 2. The button sewing machine device according to claim 1, wherein the thread guide projection is inclined at an angle of about 45 degrees between the rotation axis direction and the first direction.