TH39927A - Sewing machine or embroidery machine - Google Patents

Abstract

DC60 (30/09/42) This invention relates to a sewing or embroidery machine with a needle and thread holder, as well as a workpiece feeding device with at least [one] driven feeder segment, where the feeder (15) for driving the feeder segment (14) has a linear drive with two armatures (25, 26) which drives in different directions, and on the feeder (15) there is an integrated control system (47, 51) which has a control loop (49) for horizontal movement, as well as a control loop (53) for vertical movement of the said feeder segment (14), and both of these control loops (49, 53) are under the control of a master control system (6) with a data processing unit (7), which in turn receives rhythmic pulses from a position encoder (5), depending on the specific at-time position of the needle or thread holder. and which can choose to send the actual values (48, 52) of the horizontal and/or vertical motion of the feed piece (14) to the main control system (6) (Figure 2). This invention relates to a sewing or embroidery machine with a needle and thread holder, as well as a workpiece feeding device with at least [one] driven feed piece, where the feeder (15) for driving the feed piece (14) has a linear drive with two armatures (25, 26) which can drive in different directions, and at that feeder (15) there is an integrated control system (47, 51) which has a control loop (49) for the horizontal motion as well as a control loop (53) for the vertical motion of the said feed piece (14), and at that control loop (49, 53) are under the control of a main control system (6) with a data processing unit (7), which the said main control system (6) receives rhythmic pulses from a position encoder (5) depending on the specific at-time position of the needle. Or the thread clamp, and which can choose to send the actual values (48, 52) of the horizontal and/or vertical movement of the feed piece (14) to the main control system (6) (Figure 2).

Claims (28)

1. A sewing or embroidery machine which has a guide needle and a thread holder attached to such needle, as well as a feed device for at least one feed part which moves along a predetermined path, such that such feed device (15) to drive such feed part (14) has a linear drive with two movable parts (armatures 25 26), one armature (26) moves in the horizontal direction and the other armature (25) moves in the vertical direction, and such feed device (15) has an integrated control system (47 51) which has a control loop (49) for the horizontal movement as well as a control loop (53) for the vertical movement of such feed part (14), both of which are under the control of a main control system (6) which contains a data processing unit (7), in which the main control system (6) receives pulse signals from a position encoder (5), depending on the current position of each side of the needle. Or the thread holder can choose to send the actual values (48 52) of the horizontal and/or vertical movement of the feed piece (14) to the main control system (6). 2. A sewing or embroidery machine that has a needle guide and a thread holder attached to the needle, as well as a workpiece feeder with a driver for at least one feed piece which moves along a predetermined path, and a clamping device with a driver for the clamp tip for the workpiece, such that the interaction of such clamp tip (14) with such clamp tip (12) can be controlled by a main control system (6) with a data processing unit (7), in which the main control system (5) interacts with the control device (47 51) for the driver of the feed piece (14), as well as the control device (54) for the driver of such clamp tip (12), and in such a way that the pressure of such clamp tip corresponds to the instantaneous movement of the feed piece (14), in which the main control system (6) receives pulse signals from the position encoder (5) which depend on each instantaneous position of the needle or thread holder. 3. The sewing or embroidery machine under claim 2 is capable of transmitting the actual values (48 52) of the vertical and/or horizontal movement of the feed piece (14) to the main control system (6) and taking control of the drive for the press end (12) based on the actual values (48 52) of the feed piece (14). 4. Any sewing or embroidery machine under the above claims is capable of selecting to move the end of such presser foot (12) to the final upper or lower thread position by using an external signal sent to its own driver. 5. A sewing or embroidery machine with a cutting device that has a thread clamp/cutter that threads/grabs the bobbin and needle lug under the needle plate according to any of the above claims, which has the following arrangement of the thread clamp/cutter (46) on such feed piece (14) in such a way that it can grasp/thread the bobbin and needle lug during the horizontal and/or vertical extension movement of such feed piece (14), which may be driven by an external signal sent to the drive of such feed piece by the thread clamp/cutter and directed to the cutter. 6. The sewing or embroidery machine under claim 5 is of the nature that an external signal which may be sent to the driver of such feed piece (14) in order to extend the movement of such feed piece (14) may also be implemented by a tensioning device for the loose needle thread. 7. A sewing or embroidery machine under any of the above claims shall have the following characteristics: such data processing unit (7) has memory for various embroidery parameters and other additional functions which can be accessed by the control panel (9) or by an interface and can be sent to the main control system (6). 8. A sewing or embroidery machine according to any of the above claims is of the nature that the drive for the press device (13) is a single-axis linear drive of the electromagnetic type, which is the armature (19) of which is directly connected to the support (21, 21a) for the end of such press (12). 9. The sewing or embroidery machine referred to in claim 8 has a single-axis linear drive that is brushless. 10. The sewing or embroidery machine according to claim 8 has the following characteristics: the armature (19) of the single-axis linear drive does not have a magnetic lever. 11. The sewing or embroidery machine under any of the above claims has the following characteristics: the support (21, 21a) for the end of the press (12) has a V-shaped cross-section. 12. A sewing or embroidery machine according to any of the above claims is characterized in which the electromagnetic linear drive of such feeder (15) is a dual-axis linear drive with an armature connected to two armature movements (25, 26), one armature being driven in the horizontal direction and the other armature being driven in the vertical direction. 13. A sewing or embroidery machine under any of the above claims is capable of independently controlling the movement of the armature (26) for the horizontal movement of the feed piece (14) from the movement of the armature (25) for the vertical movement of the feed piece (14). 14. A sewing or embroidery machine under any of the above claims is capable of controlling the movement of the said armature (26) for the horizontal movement of the said feed piece (14) depending on the movement of the said armature (25) for the vertical movement of the said feed piece (14). 15. A sewing or embroidery machine according to any of the above claims is characterized by the connection of two armatures (25, 26) of a dual-axis linear drive into a single armature which may be driven in the horizontal direction as well as in the vertical direction. 16. Any sewing or embroidery machine under any of the above claims has such an armature (25) which may be driven in a vertical direction, made of two spaced and parallel armature sections, which are connected by a support which bridges the gap for such thread holder. 17. A sewing or embroidery machine according to any of the above claims is of a nature that connects such protective parts (14) directly to one or two such armatures (25, 26) for vertical and horizontal movement. 18. The sewing or embroidery machine under any of the above claims has the following characteristics: the armature (25, 26) of the dual-axis linear drive is V-shaped and contains permanent magnets with poles (25a, 26a). 19. Any sewing or embroidery machine according to one of the above claims has a permanent magnet arrangement such as (25a, 26a) or is polarized so that the first group causes vertical movement of such feed parts (14) and the second group causes horizontal movement. 20. A sewing or embroidery machine according to one of the above claims is designed to construct a stator (31, 32) of such a dual-axis linear drive such that the first group of stator coils or poles, which interact with the first group of permanent magnets, cause the vertical movement of such feed piece (14), and the second group of stator coils or poles, which interact with the second group of permanent magnets, cause the horizontal movement of such feed piece (14). 21. Any sewing or embroidery machine under any of the above claims has the following characteristics: the armature (25, 26) of the dual-axis linear drive does not have a magnetic lever. 22. Any sewing or embroidery machine under any of the above claims has a dual-axis linear drive that is a brushless linear drive. 23. Any sewing or embroidery machine under any of the above claims has a design in which the feeding part (14) is placed directly onto the support (27). 24. A sewing or embroidery machine under any of the above claims is characterized by the connection of such armature (25, 26) of a dual-axis linear drive indirectly or directly to a position encoder (40), and such position encoder is designed as a two-dimensional position encoder. 25. A sewing or embroidery machine under any of the above claims has the following characteristics: the positioning encoder (40) has two independent evaluating devices. 26. A sewing or embroidery machine according to any of the above claims has the following characteristics: the positioning encoder (40) has two shields (41, 41a, 42, 42b) or two Hall probes. 27. A sewing or embroidery machine according to one of the above claims has the following characteristics: the position encoder disc (44, 45) of two groups of linear components, group one (44) which is drawn in the first direction and can be swept through by the first shield (41, 41a), while group two (45) which is drawn in the second direction and can be swept through by the second shield (42, 42b). 28. A sewing or embroidery machine, according to one of the preceding claims, has a design in which the position encoder plate has two distinct encoder areas: a first area that can be swept through by a first Hall probe arrangement, and a second area that can be swept through by a second Hall probe arrangement.