98results about "Safety devices for sewing-machines" patented technology

The present invention discloses a protection device capable of preventing broken sewing-machine needle from arbitrarily flying to injure operator. It is characterized by that a transparent protection device is placed around active area of sewing-machine needle and fixedly connected on the supporting rod of presser foot, and said protection device is placed between the sewing-machine and user so as to form protection.

The invention discloses a safety sewing machine. By arranging a protection strip and a photoelectric sensing device, hands of a person are effectively prevented from being close to a needle head, unwanted damage is avoided, and breaking of the needle head due to the fact that a foreign matter collides with the needle head moving at high speed. The safety sewing machine comprises a base, a machine body and a machine head, the machine body is arranged on the base, the machine head is mounted at the tail end of the machine body, a motor is arranged in the machine body, a sewing needle is mounted below the machine head, a press pin is further arranged below the machine head, and the protection strip is arranged at the edge of the press pin. The protection strip can prevent the hands of the person to be close to the needle head, and the photoelectric sensing device can further guarantee the hands of the person or other objects not to collide with the needle head, so that safety in the process of sewing is guaranteed.

The invention relates to a novel machine needle protective cover special for a sewing machine. A vertical machine needle assembly and a press foot assembly are connected with a machine head of the sewing machine, the protective cover mainly comprises a main protective cover body, wherein the main protective cover body is arranged on a lateral face, which faces an operator, of the machine head, and can rotate relative to the machine head, the protective cover is characterized in that the main protective cover body is a vertical plate, and an auxiliary protective cover is a vertical thin plate connected on a press foot near a machine needle. The auxiliary protective cover can be used for preventing a finger of the operator from being injured by needling, so that the operator can be protected more comprehensively except the shielding of a main protective cover, and the safety is increased; the main protective cover body can be integrated with a connecting plate thereof, the rotation maneuverability of the main protective cover body is ensured, and parts are saved; moreover, the main protective cover and the auxiliary protective cover can be made of transparent materials, so that the operator is convenient to cleanly observe the operating conditions of the machine needle and the press foot which are in back of the protective cover.

The invention relates to a detector for a sewing machine. The detector for the sewing machine comprises a bend plate, a nose disposed on the bed plate, a needle bar connected to the nose, and a needle shaft driving the needle bar to move. The needle shaft is connected with a piston rod of a cylinder. A controller, a photoelectric sensor and an alarm are disposed on the nose. The controller is connected with the cylinder, the photoelectric sensor and the alarm. The detector for the sewing machine is simple in structure and convenient to use. The length of a needle on the needle bar is detected by the photoelectric sensor so as to determine presence of a broken needle in a garment being sewn. The acoustic-optic alarm is capable of reminding people of taking corresponding measures to avoid injury of human bodies.

An embroidery sewing machine hoop guard includes a strap held by a handle portion having a grip, a strap attachment wall for attachment of one end of the strap, and a buckle for receiving the other end, allowing the strap to be held on edge in a generally circular position. The strap adjusts to fit within a hoop while allowing adhesive spraying of a flat area of clothing material to be embroidered, protecting from overspray of adhesive, thus avoiding periodic cleaning of the hoop. The hoop guard may be held on any surface within which a spray material or coating is applied to the surface, by gripping with one hand while a spray device is operated by the other hand to spray an area of the surface within the boundary formed by the strap and handle portion. This prevents overspray beyond that area, protecting other elements or surfaces.

The invention discloses a double-thread sewing machine capable of preventing hand pinching. The double-thread sewing machine comprises a supporting plate and a double-thread sewing machine body, the double-thread sewing machine body is arranged on the top surface of the supporting plate, the two sides of the output end of the double-thread sewing machine body are provided with rubber sleeves, first springs are arranged in the rubber sleeves, and two first fixing frames are fixed at the bottom of the supporting plate; second springs are fixed to the top surfaces of the interiors of first grooves, and a motor is installed on the top surface of a first mounting plate; the end of an output shaft of the motor is rotationally connected with a second roller through a coupler, and a second mounting plate is fixed to the outer wall of the supporting plate; a second fixing frame is fixed to the top surface of the second mounting plate, and the bottom of a third spring is located in a second groove and is rotationally connected with a third roller through a second connecting pin. The double-thread sewing machine can well prevent hands from being pinched during work, meanwhile, long cloth canbe conveniently sewn, and the working efficiency is improved.

The invention relates to the technical field of sewing machines, and discloses a sewing machine needle correcting device with a transposition function. The sewing machine needle correcting device comprises a needle rod, wherein the inner cavity of the needle rod is rotationally connected with a connecting pipe; an elastic ejector rod is inserted into the right wall of the needle rod in a sliding manner; a detection column is slidably connected to the right wall of the connecting pipe; a first spring is fixedly connected between the detection column and the right wall of the connecting pipe; ametal elastic piece is arranged on the right side of the detection column in the inner cavity of the right wall of the connecting pipe; and an extrusion column is slidably connected to the lower portion of the detection column in the inner cavity of the right wall of the connecting pipe. According to the sewing machine needle correcting device with the transposition function, a rotating ring is arranged and matched with the elastic ejector rod to fix a machine needle, then the detection column is arranged in a matching way to detect the orientation of the mounting surface of the machine needleand control starting and stopping of an electromagnet, and a rack can drive a transmission fluted disc to rotate through a transmission gear, so that the machine needle is more convenient to mount, and the situation of needle breaking and thread jumping in the sewing process is avoided.

The invention relates to a machine needle protection plate device for a sewing machine, which is characterized by comprising a flat box-shaped protection plate cover, wherein a long stripped opening is arranged on the wall surface at one side of the protection plate cover, a protection plate is accommodated in an internal space, and the protection plate can extend out of the protection plate cover from the opening. The machine needle protection plate device provided by the invention has the advantages that the protection plate is arranged in the protection plate cover, and safety and dustlessness are realized. When the machine needle protection plate device is used, the protection plate is pulled out to block a machine needle, convenience and practicability are realized, and parts are reduced. Elastic plastic pulleys are arranged at the side edge of the protection plate, so the protection plate extends out of the cover body and can be stopped at any height for adapting to various conditions. The lower end of the protection plate cover is provided with a notch, and the protection plate can be conveniently pinched for extending.