Claims
- 1. In a multiple pattern sewing machine, means for controlling the feed amount or bight coordinate position in accordance with the amplitude of the signal applied thereto, means for providing a pattern of signal amplitudes to said controlling means to produce a predetermined feed or bight pattern, said pattern signal providing means including means for supplying a plurality of predetermined signals of different amplitudes, a plurality of means for selectively coupling respective ones of said signal amplitudes to said controlling means, each signal amplitude producing a predetermined coordinate position in said feed or bight pattern, means for generating a timing signal for each stitch in the pattern, and a counter stepped in response to said timing signal and having a maximum count equal to the number of stitches in the pattern, the outputs of said counter being coupled to respective coupling means to thereby actuate the same in an order according to the feed or bight pattern.
- 2. In a multiple pattern sewing machine, means for controlling the feed amount or bight coordinate position in accordance with the amplitude of a signal applied thereto, means for providing a pattern of signal amplitudes to said controlling means to produce a predetermined feed or bight pattern, said pattern signal providing means including a voltage divider having a plurality of taps for supplying a plurality of predetermined signals of different amplitudes, means for selectively coupling respective ones of said signal amplitudes to said controlling means, each of said selectively coupling means being a switching device coupled between said controlling means and one of said taps, each signal amplitude producing a predetermined coordinate position in said feed or bight pattern, and means for actuating said selectively coupling means in an order according to the feed or bight pattern.
- 3. A multiple pattern sewing machine, a feed mechanism for feeding a cloth, a bight mechanism for swinging a sewing needle in a direction crossing the cloth feeding direction, means for controlling the displacement of said feed mechanism, means for controlling the displacement of said bight mechanism, means for generating a timing signal for each stitch in the pattern, means for generating a plurality of different reference voltages for controlling said feed mechanism, means for generating a plurality of different reference voltages for controlling said bight mechanism, said feed control reference voltage generating means and said bight control reference voltage generating means each including a voltage divider network formed by a series connection of a plurality of resistor components coupled to receive a predetermined voltage at both ends of said series connection, feed switching means each including a plurality of two serially connected switching devices for selectively coupling said plurality of feed reference voltages to said feed controlling means, bight switching means including a plurality of two serially connected switching devices for selectively coupling said plurality of bight reference voltages to said bight controlling means, pattern selecting means for selectively rendering conductive predetermined ones of said first serially connected switching devices, and counter means responsive to said timing signal for making a stepping operation for selectively rendering conductive said second serially connected switching devices of said feed switching means and said bight switching means for each stepping operation.
- 4. Apparatus in accordance with claim 2 wherein said actuating means includes means for generating a timing signal for each stitch in the pattern and a counter stepped in response to said timing signal and having a maximum count equal to the number of stitches in the pattern, the outputs of said counter being coupled to respective coupling means to thereby actuate the same.
- 5. In a multiple pattern sewing machine
- a feed mechanism for feeding a cloth,
- a bight mechanism for swinging a sewing needle in the direction crossing the cloth feeding direction,
- means for controlling the displacement of said feed mechanism,
- means for controlling the displacement of said bight mechanism,
- means for generating a timing signal for each stitch in the pattern,
- means for generating a plurality of different reference voltages for controlling said feed mechanism,
- means for generating a plurality of different reference voltages for controlling said bight mechanism,
- feed switching means including a plurality of switching devices for selectively coupling said plurality of feed reference voltages to said feed controlling means,
- bight switching means including a plurality of switching devices for selectively coupling said plurality of bight reference voltages to said bight controlling means, and
- counter means responsive to said timing signal for making a stepping operation for selectively rendering conductive the switching devices of said feed switching means and said bight switching means for each stepping operation.
- 6. Apparatus in accordance with claim 5, wherein said timing signal generating means comprises feed timing signal generating means provided for said feed mechanism and bight timing signal generating means provided for said bight mechanism.
- 7. Apparatus in accordance with claim 5, wherein said counter means comprises
- feed counter means operatively coupled to said feed switching means for selectively rendering conductive the switching devices of said feed switching means, and
- bight counter means operatively coupled to said bight switching means for selectively rendering conductive the switching devices of said bight switching means.
- 8. Apparatus in accordance with claim 5, wherein said feed control reference voltage generating means and said bight control reference voltage generating means each comprise a voltage divider network including a series connection of a plurality of resistor components coupled to receive a predetermined voltage at both ends of said series connection.
- 9. Apparatus in accordance with claim 8 wherein said series connection of resistor components is a plurality of resistor elements printed on a single chip.
- 10. Apparatus in accordance with claim 5, wherein each of said switching devices is a field effect transistor.
- 11. Apparatus in accordance with claim 5, wherein each of said displacement controlling means includes servo-amplifier means coupled to receive a corresponding control voltage,
- servo-motor means coupled to be energized by the output of said servo-amplifier means, and
- position detecting means coupled to said servo-motor means for detecting a rotational position of said servo-motor means for feeding back the output of said servo-amplifier means.
- 12. Apparatus in accordance with claim 5, wherein each of said displacement control means includes
- voltage/pulse converting means responsive to a corresponding control voltage for converting said control voltage into a train of pulses the number of which is associated with said control voltage, and
- pulse motor means coupled to said voltage/pulse converter means to be energized by the pulses from said voltage/pulse converter means.
- 13. In a multiple pattern sewing machine, including a power source, a driving motor coupled to said power source for energization, a main shaft coupld to be driven by said driving motor, a sewing needle operatively coupled to said main shaft, a feed mechanism operatively coupled to said main shaft for feeding a cloth, a bight mechanism operatively coupled to said main shaft for swinging said sewing needle in the direction crossing the cloth feeding direction, means for controlling displacement of said feed mechanism, and means for controlling the displacement of said bight mechanism, control apparatus comprising: pattern selecting means for selecting a desired one of a plurality of patterns to be sewn;
- means operatively associated with the up and down movement of said sewing needle for generating a timing pulse;
- a plurality of feed control voltage generating means, one being associated with one of a plurality of patterns to be sewn and being responsive to said pattern selecting means to be selectively enabled for generating a plurality of different voltages for controlling said feed mechanism;
- a plurality of bight control reference voltage generating means, one being associated with one of a plurality of patterns to be sewn and being responsive to said pattern selecting means to be selectively enabled for generating a plurality of different reference voltages for controlling said bight mechanism;
- feed switching means including a plurality of switching devices for selectively coupling said plurality of feed reference voltages from said selected feed control reference voltage generating means to said feed displacement controlling means;
- bight switching means including a plurality of switching devices for selectively coupling said plurality of bight reference voltages from said selected bight control reference voltage generating means to said bight displacement controlling means; and
- counter means responsive to said timing signal for making a stepping operation for selectively rendering conductive the switching devices of said feed switching means and said bight switching means for each stepping operation.
- 14. Apparatus in accordance with claim 13, wherein each said switching means comprises a plurality of switching devices the number of which is equal the number of stitches in one cycle of the corresponding pattern to be sewn, each being coupled to a voltage output point of the value corresponding to the coordinate position of each stitch of the corresponding reference voltage generating means.
- 15. Apparatus in accordance with claim 13, wherein each of said feed control reference voltage generating means and said bight control reference voltage generating means comprises
- a voltage divider network provided for each of said plurality of patterns to be sewn and including a series connection of a plurality of resistor components coupled to receive a predetermined voltage at both ends of said series connection.
- 16. A machine in accordance with claim 15, wherein said series connection of resistor components is a plurality of resistor elements printed on a chip.
- 17. In a multiple pattern sewing machine, including a power source, a driving motor coupled to said power source for energization, a main shaft coupled to be driven by said driving motor, a sewing needle operatively coupled to said main shaft, a feed mechanism operatively coupled to said main shaft for feeding a cloth, a bight mechanism operatively coupled to said main shaft for swinging said sewing needle in the direction crossing the cloth feeding direction, means for controlling displacement of said feed mechanism, and means for controlling the displacement of said bight mechanism control apparatus comprising:
- means operatively associated with the movement of said sewing needle for generating a timing signal;
- means common to said plurality of patterns to be sewn for generating a plurality of different reference voltages for controlling said feed mechanism;
- means common to said plurality of patterns to be sewn for generating a plurality of different reference voltages for controlling said bight mechanism;
- feed switching means including a plurality of switching devices for selectively coupling said plurality of feed reference voltages to said feed displacement controlling means;
- bight switching means including a plurality of switching devices for selectively coupling said plurality of bight reference voltages to said bight displacement controlling means;
- pattern selecting means for selecting a desired one of said plurality of patterns to be sewn, and
- counter means provided for each of said plurality of patterns to be sewn and responsive to said timing signal for making a stepping operation for selectively rendering conductive the switching devices of said feed switching means and said bight switching means for each stepping operation in association with the selected pattern to be sewn.
- 18. Apparatus in accordance with claim 17, wherein each said switching means comprises a plurality of switching devices the number of which is associated with the number of stitches in one cycle of the corresponding pattern to be sewn, each being coupled so as to provide a voltage output value corresponding to the coordinate position of each stitch of the corresponding reference voltage generating means.
- 19. In a multiple pattern sewing machine,
- a feed mechanism for feeding a cloth,
- means for controlling the displacement of said feed mechanism,
- a bight mechanism for swinging said sewing needle in the direction crossing the cloth feeding direction,
- means for controlling the displacement of said bight mechanism,
- means for generating a timing signal for each stitch in the pattern,
- a feed resistor network including a series connection of a plurality of resistor elements adapted to be supplied with a voltage between both ends of said series connection,
- a bight resistor network including a series connection of a plurality of resistor elements adapted to be supplied with a voltage between both ends of said series connection,
- a matrix including a plurality of column lines and a plurality of sets of row lines, said number of sets of row lines corresponding to the number of reference voltages, the intersections between each column line and said row lines being selectively coupled in a logical product fashion in a step sequence in accordance with one of the multiple patterns,
- feed switching means including a plurality of switching devices adapted to be turned on respectively in response to the outputs of the corresponding sets of row lines of said matrix and selectively coupling the reference voltages of said feed resistor network to said feed controlling means,
- bight switching means including a plurality of switching devices adapted to be turned on respectively in response to the outputs of the corresponding sets of row lines of said matrix and selectively coupling the reference voltages of said bight resistor network to said bight controlling means, and
- counter means responsive to said timing signal for making a stepping operation for selectively and sequentially rendering conductive the sets of row lines in said matrix.
- 20. Apparatus in accordance with claim 19, wherein said counter means has an output corresponding to the number of needle drops in one cycle of a pattern being sewn.
- 21. Apparatus in accordance with claim 20, wherein the number of row lines in each set corresponds to the number of needle drops.
- 22. Apparatus in accordance with claim 19, wherein pattern selecting means is provided for selecting any of said plurality of patterns, and
- means responsive to said selection of said pattern selecting means is provided for rendering effective the corresponding column line among said plurality of column lines.
- 23. Apparatus in accordance with claim 19, wherein each of said resistor networks comprises:
- a stabilized voltage source, and
- a resistor voltage dividing circuit coupled to said stabilized voltage source for dividing the output of said stabilized voltage source into a plurality of voltage values.
Priority Claims (3)
Number |
Date |
Country |
Kind |
52-76896 |
Jun 1977 |
JPX |
|
52-122719 |
Oct 1977 |
JPX |
|
52-122720 |
Oct 1977 |
JPX |
|
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of my copending application, Ser. No. 948,158, filed Oct. 3, 1978, now abandoned, which, in turn, is a continuation-in-part of my application Ser. No. 913,592, filed June 8, 1978, now abandoned.
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2702488 |
Jul 1977 |
DEX |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
948158 |
Oct 1978 |
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Parent |
913592 |
Jun 1978 |
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