JPH0414080U

JPH0414080U -

Info

Publication number: JPH0414080U
Application number: JP5311790U
Authority: JP
Priority date: 1990-05-22
Filing date: 1990-05-22
Publication date: 1992-02-04
Anticipated expiration: 2005-05-22
Also published as: JPH0729978Y2

Description

[Brief explanation of the drawing]

第１図は本考案に係る布搬送装置付きミシンの
自動糸切装置の一実施例を示す概略構成図、第２
図は第１図の装置の各部を制御する制御装置のブ
ロツク図、第３図は糸切装置の要部平面図、第４
図は第３図における−線断面図、第５図は第
１図の装置の作動説明図、第６図は第２図の制御
装置による制御の一実施例を示すフローチヤート
、第７図ａ及びｂは糸切作動を示す説明図、第８
図は従来の布搬送装置付糸切りミシンの概略構成
図、第９図は第８図による糸切装置の作動説明図
である。１……糸切装置、２……テーブル、３……ミシ
ンヘツド、５……布検知センサ、６……吸込口、
８……カツター、８ａ……固定刃、８ｂ……揺動
刃、１０……スタツク部、１１……布搬送装置、
１２……布送りシリンダ、１３Ａ……送り電磁弁
、１３Ｂ……戻し電磁弁、１５……布押えシリン
ダ、１８……電磁弁、１９……バースタツカ、２
０……積み台、２１……中央制御装置。 FIG. 1 is a schematic configuration diagram showing one embodiment of an automatic thread cutting device for a sewing machine equipped with a cloth conveying device according to the present invention, and FIG.
The figure is a block diagram of a control device that controls each part of the device shown in FIG. 1, FIG. 3 is a plan view of main parts of the thread cutting device, and FIG.
The figure is a sectional view taken along the line -- in FIG. 3, FIG. 5 is an explanatory diagram of the operation of the device in FIG. 1, FIG. 6 is a flow chart showing an example of control by the control device in FIG. 2, and FIG. and b is an explanatory diagram showing the thread cutting operation, No. 8
This figure is a schematic diagram of a conventional thread trimming sewing machine with a cloth conveyance device, and FIG. 9 is an explanatory diagram of the operation of the thread trimming device shown in FIG. 8. 1... Thread cutting device, 2... Table, 3... Sewing machine head, 5... Cloth detection sensor, 6... Suction port,
8... Cutter, 8a... Fixed blade, 8b... Swinging blade, 10... Stack section, 11... Cloth conveyance device,
12... Cloth feed cylinder, 13A... Feed solenoid valve, 13B... Return solenoid valve, 15... Cloth presser cylinder, 18... Solenoid valve, 19... Bar stacker, 2
0... Loading platform, 21... Central control device.

Claims

[Scope of utility model registration request]

By the cloth presser and cloth feed action of the cloth feed cylinder and the cloth presser cylinder provided at the rod end of the cloth feed cylinder, the sewn cloth is moved with a movement locus above the suction port of the thread cutting device which is opened on the table. A cloth conveyance system in which the empty ring formed at the end of the cloth is sucked from the suction port toward the cutter of the thread cutting device and cut, and then the cloth is transferred to the next process by the cloth feed cylinder. In the sewing machine with the device, a feed solenoid valve and a return solenoid valve are provided between the air supply port and the air supply source, which drive the cloth feed cylinder in different directions, respectively, and both of the solenoid valves are driven and controlled by a central controller. When the cloth feed cylinder is transferred, after the rear end of the cloth passes the suction port, it moves back toward the suction port by a predetermined stroke, forms a slack part in the empty ring, and uses the slack part to be sucked into the thread cutting device. An automatic thread cutting device for a sewing machine with a cloth conveying device, which is characterized by automatically feeding cloth to the spout.