Embroidery sewing machine

Abstract

An embroidery sewing machine includes an embroidery frame holding workpiece cloth to be sewn, a carriage transferring the embroidery frame which is attachable to and detachable from the carriage, a driving unit which moves the carriage, a sewing machine motor, a control unit which controls the drive unit and the sewing machine motor, the control unit being capable of executing an embroidery sewing mode in which an embroidery pattern is sewn and a manual feed sewing mode in which a sewing operation is carried out with manual cloth feed while the carriage is moved to and held at a predetermined evacuative position, and a mode switching unit which selectively switches between the embroidery sewing mode and the manual feed sewing mode.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features and advantages of the present disclosure will become clear upon reviewing the following description of the embodiment with reference to the accompanying drawings, in which:

FIG. 1 is a front view of a multineedle embroidery sewing machine in accordance with a first illustrative example of the present disclosure;

FIG. 2 is a right side view of the multineedle embroidery sewing machine;

FIG. 3 is a partial cross-sectional view of the multineedle embroidery sewing machine;

FIG. 4 is a front view of a screen of a liquid crystal display;

FIG. 5 is a block diagram showing the control system of the multineedle embroidery sewing machine;

FIG. 6 illustrates data structure of a pattern data memory;

FIG. 7 is flowchart showing a sewing processing;

FIG. 8 is a flowchart showing free-motion sewing processing;

FIG. 9 is a view similar to FIG. 4, showing a second illustrative example of the present disclosure;

FIG. 10 is a view similar to FIG. 6, showing the second example;

FIG. 11 is a view similar to FIG. 7, showing the second example; and

FIG. 12 is a view similar to FIG. 8, showing the second example.

Claims

1. An embroidery sewing machine comprising: an embroidery frame holding workpiece cloth to be sewn;a carriage transferring the embroidery frame detachably attached thereto;a drive unit which moves the carriage;a sewing machine motor;a control unit which controls the drive unit and the sewing machine motor so as to be capable of executing an embroidery sewing mode in which an embroidery pattern is sewn and a manual-feed sewing mode in which a sewing operation is carried out with manual cloth feed while the carriage is moved to and held at a predetermined evacuative position; anda mode switching unit which selectively switches between the embroidery sewing mode and the manual-feed sewing mode.

2. The embroidery sewing machine according to claim 1, further comprising an input unit which is operative to input various commands to the control unit, wherein the mode switching unit has a mode switching key provided in the input unit.

3. The embroidery sewing machine according to claim 1, further comprising a foot controller and a connecting part connecting the foot controller to the control unit so that the foot controller is detachable from the connecting part, wherein the mode switching unit switches to the embroidery sewing mode when the foot controller is non-connected to the connecting part and to the manual feed sewing mode when the foot controller is connected to the connecting part.

4. The embroidery sewing machine according to claim 2, wherein the control unit controls the sewing machine motor based on a sewing start command signal supplied thereto from the operation input unit.

5. The embroidery sewing machine according to claim 3, wherein the foot controller is electrically connected to the control unit so as to deliver a speed command signal to the control unit, and the control unit controls the sewing machine motor based on the speed command signal delivered from the foot controller to the control unit.

6. The embroidery sewing machine according to claim 1, further comprising a needlebar, wherein the control unit controls the sewing machine motor irrespective of a height position of the needlebar.

7. The embroidery sewing machine according to claim 1, further comprising a plurality of needlebars and a needlebar selecting unit which selects any one of the needlebars.

8. An embroidery sewing machine comprising: an embroidery frame holding workpiece cloth to be sewn;a carriage transferring the embroidery frame detachably attached thereto;a drive unit which moves the carriage;a sewing machine motor;a pattern data storing unit which stores data of a plurality of embroidery patterns, the data of a plurality of embroidery patterns including evacuating drive data for moving the carriage to a predetermined evacuation position and holding drive data for holding the carriage at the evacuation position or a position near the evacuation position; anda control unit which controls the drive unit and the sewing machine motor.

9. The embroidery sewing machine according to claim 8, wherein when receiving a command which designates the evacuating drive data and the holding drive data, the control unit controls the drive unit based on the evacuating drive data so that the carriage is moved to the evacuating position and subsequently, on the holding drive data so that the carriage is held at the evacuation position or the position near the evacuation position.

10. The embroidery sewing machine according to claim 8, further comprising an operation input unit which inputs or a foot controller and a connecting part connecting the foot controller to the control unit so that the foot controller is detachable from the connecting part, wherein the control unit controls the sewing machine motor based on a sewing start command signal the control unit receives from the foot controller.

11. The embroidery sewing machine according to claim 8, further comprising a needlebar, wherein the control unit controls the sewing machine motor irrespective of a height position of the needlebar.

12. The embroidery sewing machine according to claim 8, further comprising a plurality of needlebars and a needlebar selecting unit which selects any one of the needlebars.