Invention Grant
- Patent Title: Control apparatus for automatic embroidery sewing machine
- Patent Title (中): 自动绣花缝纫机控制装置
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Application No.: US204052Application Date: 1980-11-04
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Publication No.: US4365565APublication Date: 1982-12-28
- Inventor: Taneichi Kawai , Koji Nishida , Osamu Miyake , Shigemitsu Hamajima
- Applicant: Taneichi Kawai , Koji Nishida , Osamu Miyake , Shigemitsu Hamajima
- Applicant Address: JPX Aichi
- Assignee: Aisin Seiki Kabushiki Kaisha
- Current Assignee: Aisin Seiki Kabushiki Kaisha
- Current Assignee Address: JPX Aichi
- Priority: JPX54-144899 19791107; JPX54-165288 19791129
- Main IPC: D05B21/00
- IPC: D05B21/00 ; G05B19/25 ; D05C9/06
Abstract:
A control apparatus for the embroidery sewing machine which comprises at least two D.C. servomotors for providing controlled power output for driving an embroidery frame, one pair of sensors responsive to rotation of the servomotors for providing detect signals in the form of feedback signals, a presettable counter located at pre-stage to a servomotor drive output amplifier circuit and having an input of the feedback signals in the form of up/down signals, the presettable counter containing a preset value for one stitch operation and counting up or down toward making the preset value zero according to the feedback signal resulting in a residual value if the servomotors are incompletely actuated, and correcting means for superposing the residual value in the counter with a value to be set therein for the next succeeding stitch operation, whereby integral accumulation of errors due to incomplete actuation of each servomotor for each stitch operation can be effectively eliminated. The control apparatus further includes indicator elements which tell the appropriate operation in progress and the completion thereof, and control keys which permit a repetitive operation including a return and an advance, a stop, etc. as required.
Public/Granted literature
- US4828400A Stress analyzer with automatic overload response Public/Granted day:1989-05-09
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