Abstract:
In known sewing machines in which the needle feed and sliding gear wheel are driven by stepping motors, the needle feed cannot be stopped. In the new design, the needle feed (n1, n2, n3, n4) is stopped by means of a switching arrangement so that the oscillation of the needle (13) in the direction of feed is stopped (point M), the distance (r2) by which the sliding gear wheel is advanced during the insertion phase (n1) of the needle is eliminated, and the distance (r3, r4, r1) by which the sliding gear wheel is advanced during the retracted phase (n3) of the needle is increased by the eliminated distance.
Abstract:
The invention relates to an electronic control system which ensures full synchronized operation of mechanisms and apparatuses such as puller, material feeding (stitching materials such as fabric, carpet, plastics, canvas, etc.. with machine), tape re-puller, smocking apparatus, additional transport mounted on sewing machines, in all cases (stich length and stich direction does not make difference) without needing any setting.
Abstract:
The invention relates to a method for operating a sewing machine for joining a jacket part (38) to a sleeve part (39). The sewing machine used has an operation and control unit. The desired stitch length and the length (1a1 to 1d1) of sections (a1 to d1) of the jacket part (38) and the length (1a2 to 1d2) of the sections (a2 to d2) of the sleeve part (39) that are allocated to the sections (a1 to d1) of the jacket part (38) are input into said operation and control unit and are used to determine the necessary control pulses for the feed drives required for each section (a1/a2 to d1/d2).
Abstract:
A method is provided for embroidering embroidery elements by means of a processor- controlled sewing machine (1). The method includes: the fabric (2) that is to be embroidered is placed in the required position in relation to a threaded needle (5) on the sewing machine; a plurality of embroidery elements (A, B, C) in the form of software products having pre- programmed embroideries are provided; a group of said embroidery elements, defined as stitch data objects in a memory (M), is selected; an arbitrary curve (KU) along which said group of embroidery elements (A, B, C) shall be embroidered on said fabric (2) is defined by the operator of the sewing machine; said embroidery elements of said group are distributed in a spaced relationship along said curve utilizing a positioning algorithm. According to the method of the invention, a coupling between the embroidery elements of the group and the arbitrary curve is preserved during the full processing by said positioning algorithm.
Abstract:
A frame movement command device for an embroidery machine capable of controlling the movement of an embroidery frame according to a signal outputted from a frame drive means by operation of a frame movement command switch, wherein the frame movement command switch has an operating section that can be inclined in multiple directions, and a signal for moving the embroidery frame in the direction corresponding to the direction in which the operating section is inclined is outputted from the frame drive means. By adopting such a structure, the embroidery frame can be moved in the direction corresponding to the direction in which the operating section of the frame movement command switch is inclined. Therefore the operator can make a switch operation correctly corresponding to the direction in which the operator desires to move the embroidery frame, only relying on the sense of the tip of the finger touching the operating section without viewing the frame movement command switch. As a result, the operator can move the embroidery frame in an arbitrary direction while viewing the lower part of a machine head.
Abstract:
A zigzag embroidering machine with rotation, comprising: a base (1), on which a bobin thread is placed; the head (7) of the embroidering machine, which is provided on the base (1) and rocked with a predetermined rocking width; a movable frame (13) positioned under the head (7) and driven in directions of X-axis and Y-axis on the base (1); a rotating frame (23) for rotating a sheet of embroidery cloth provided on the movable frame (13); and a conversion calculating means for reading in embroidery pattern data in terms of an embroidery needle (10), and conversion-calculating the data into data in terms of the rotating frame (23). The embroidery data such as enlarging and reduction after editing can be accurately reproduced.