44results about How to "Beautiful stitches" patented technology

The invention discloses a novel small-head sewing machine, which is characterized by comprising a machine shell; an installing wall and a worktable; a main pressing pin for pressing fabrics to be sewed, a delivering mechanism, a push mechanism, and a lifting mechanism are arranged on the installing wall; the delivering mechanism comprise a sewing needle, a needle driving part, a swaying pressing pin, and a swaying pressing rod; a supporting point and a driving point are arranged on the swaying pressing rod; a pusher and a shearing mechanism are installed in the worktable; the pusher comprises a material pushing driving part and a cloth delivering tooth in opposite to the swaying pressing foot; the pusher is applied to the driving point, thus the swaying pressing rod and the sewing needle are crossly and repeatedly swayed around the supporting point; the lifting mechanism applies force to the swaying pressing rod, and the shearing mechanism is used for shearing the sewing line crossed through the sewing needle. Through three-synchronous delivering mechanisms, the novel small-head sewing machine overcomes the shortcoming that the needle eye is easy to be pulled out of a long slot by the sewing needle during the working process of a traditional two-synchronous delivering sewing machine; the sewed line trace is beautiful, the sewing quality is greatly promoted; the overall structure is compact, and the movement stability is high.

The invention belongs to the technical field of sewing machines, and specifically relates to an auxiliary feeding device for a sewing machine. The device comprises an one-way clutch driving assembly and a dragging wheel assembly; the one-way clutch driving assembly comprises an one-way clutch driving planetary gear shaft which is connected through a coupling and rotates in one direction, and a large synchronizing wheel hinge pin; a driving swinging rod sleeves the one-way clutch driving planetary gear shaft; the other end of the driving swinging rod is connected with one end of a connecting rod through the hinge pin; an adjusting connecting rod which is connected with the swinging shaft is arranged on the other end of the connecting rod; the dragging wheel assembly comprises a large synchronizing wheel, a first small synchronizing wheel and a second small synchronizing wheel; synchronizing belts are arranged at the outsides of the large synchronizing wheel, the first small synchronizing wheel and the second small synchronizing wheel; compressing wheels for tensioning the synchronizing belts are arranged on the synchronizing belts. The device is high in reliability, durability and stability; materials can be synchronously and stably fed, and the material grabbing force and driving force are high during passing through a joint, thus the sewing is smooth, and the stitches are uniform and nice.

The invention provides an automatic reverse stitching device control system and method for a sewing machine, belongs to the technical field of sewing machines and solves the problems of low success rate of existing thread end overlocking and poor attractiveness. The automatic reverse stitching device control system for the sewing machine comprises a stitching structure, a driving motor module, an electric control unit, an inductive detection group and a sewing assisting device group, wherein at least one group of preset values are set on the electric control unit in advance, and when the actual turning angle value of a driving motor and an actual induction value of the corresponding cloth position are identical to a group of preset values, the electric control unit outputs corresponding control signals to control starting or stopping of one sewing assisting device corresponding to the group of preset values. The automatic reverse stitching device control system for the sewing machine has the advantages that the judgement result is more accurate, the success rate of thread end overlocking is higher and overlocked stitches are more attractive.

A full-automatic cloth dragging machine comprises a main body, a monitoring unit and a control unit. The main body comprises a cloth dragging wheel, a driving mechanism, a pressing foot lifting mechanism and a position regulating mechanism. The control unit controls and regulates operation of the driving mechanism according to main machine sewing speed monitored through the monitoring unit so as to control and regulation rotation of the cloth dragging wheel. The full-automatic cloth dragging machine can meet the modern sewing process requirements, is high in work efficiency, can guarantee quality of sewn products, and is simple in overall structure, good in stability, attractive in stitch and wide in application.

The invention belongs to the technical field of sewing machines, and particularly relates to a bird nest removing quick blade replacing blade-attached presser foot for a sewing machine. The presser foot comprises a presser foot handle and a presser foot plate, wherein a central line groove is formed in the front part of the presser foot plate; the presser foot handle is hinged to two connecting parts on the presser foot plate; a threading groove is formed in the presser foot plate at the back end of the central line groove; the central line groove is communicated with the threading groove; a blade groove is formed in the presser foot plate between the two connecting parts; the tail end of the threading groove is positioned in the blade groove; a blade is arranged in the blade groove; a cutting edge of the blade is positioned above the threading groove. A blade pressing plate is adopted to press the blade to be fixed in the blade groove of the presser foot, the presser foot handle and the presser foot plate are fixedly hinged by a screw, certain pressure is kept on the blade by the blade pressing plate to fix the blade, the quick blade replacing can be realized by screwing off the screw and dismounting the presser foot handle and the blade pressing plate, special articles of glue, special dismounting tools and the like are not needed, and the dismounting is convenient.