The electrical control device of the yarn feeding device has an automatic error-proof function, which can immediately disconnect the circuit when the yarn breaks, the tension fluctuates greatly, and the air yarn appears, so that the machine stops and displays a red signal, prompting the driver to handle it in time. The automatic error protection function requires that the tension control lever connected to the yarn feeding device and the electric control device can sensitively cut off the circuit and stop the machine in time when the above yarn feeding problem occurs. However, at present, after various types of yarn feeders have been used for a long period of time, there are different degrees of motion errors or motion lags, causing the machine to be in an unstable state. It can be said that the failure of the error prevention function is a defect of the current weft knitting machine. Therefore, it is required to be able to ensure that the yarn breakage is self-stopping, sensitively reacts to small changes in the tension of the external yarn tension, and safe and reliable long-term work is a technical problem that the current yarn feeder needs to solve.
Fly-foil and oil-affecting devices function in knitting factories, dozens of dozens of circular weft machines often spin different fiber yarns. The yarn passes from the yarn feeder through the yarn feeding device to the circular weft machine. In the process of transmission, it is rubbed at high speed with the machine guide hole, tension control device, yarn guide tension control lever and other parts. It is easy to break, and the particulate dust is formed to be free in the air, and is adsorbed on the machine under the action of static electricity in contact with the machine and the self-gravity to form fly-float. Under the action of the circular weft suction device and the blowing device, and the compressed air flow of the cleaning nozzle, the flying flower and the flying floc become irregular turbulence in the space of the circular weft machine, and enter various corners and gaps of the device.
The metal parts of the circular weft machine and the knitting needles running in the triangle track are all operated under lubrication. In high-speed operation, the lubricating oil vaporizes into oil mist particles and is emitted into the air, which is adsorbed by the yarn, the fly flower and the fly floc. In particular, the antistatic oil agent applied to the surface of the chemical fiber and the lubricating wax applied to the surface of the natural fiber yarn will vaporize when the yarn running at high speed rubs against the yarn guide hole to form various misty particles in the air. It is free and adsorbed on the surface of the flying flower or flying floc, or as the airflow enters the electrical control device of the yarn feeding device, and adsorbs and accumulates on the surface of the electrical contact, the rotating hole of the tension control rod and the surface of each component. Over time, these easily removed oil mists and stains will form a layer of dirt on the control device cavity and on the surface of each part.
Sealing inspection yarn feeder technology When the yarn tension fluctuation, yarn breakage, and empty yarn occur on the yarn passage, the electric control device cannot close the machine circuit in time, thereby forming a woven fabric with holes, broken needles, yarn skipping, etc. Rickets. Controlling malfunctions or lags can cause more problems such as fault deterioration, machine damage, broken needles, and needles. Repeated failures can affect the normal operation of the work, making the quality of the fabric difficult to control. The fly ash and oil stain adsorbed and accumulated on the rotating hole of the tension control rod also seriously affect the sensitivity of the tension adjustment of the control rod, resulting in erroneous shutdown, slow yarn breakage, lag of empty yarn, and various faults such as self-stop. It is a common problem of all current yarn conveying devices. Therefore, the sealing property becomes an important indicator for evaluating the technology of the yarn feeder.
New yarn feeder solves the sealing problem Ningbo Sun Textile Machinery Co., Ltd. scientific research and technical research based on the common technical problems arising from various types of yarn feeders produced by various countries in the world, aiming at the two main reasons affecting the yarn feeding function Innovate and improve, and successfully produce a new generation of yarn feeders--NPF-type yarn feeders, which solves the problem of the electrical controller sealing problem of the yarn feeder and the sensitivity of the tension control rod, and obtains the invention patent.
The electrical controller of the NPF type yarn feeder is a sealed structure, which greatly improves the cleanliness of the space, can keep the electrical contacts clean state for a long time, and is not affected by the external turbid airflow; ensuring that the tension control lever of the yarn feeding device can sensitively react to the outside world. The yarn tension changes, and when the yarn breakage, the empty yarn, the yarn twist and the like occur, the reaction is sensitive, and the machine circuit can be cut off in time to display the shutdown signal. Due to the good sealing inside the controller, the metal movement fatigue of the contact element is greatly reduced, and the service life of the electrical contact is improved.
Fly-foil and oil-affecting devices function in knitting factories, dozens of dozens of circular weft machines often spin different fiber yarns. The yarn passes from the yarn feeder through the yarn feeding device to the circular weft machine. In the process of transmission, it is rubbed at high speed with the machine guide hole, tension control device, yarn guide tension control lever and other parts. It is easy to break, and the particulate dust is formed to be free in the air, and is adsorbed on the machine under the action of static electricity in contact with the machine and the self-gravity to form fly-float. Under the action of the circular weft suction device and the blowing device, and the compressed air flow of the cleaning nozzle, the flying flower and the flying floc become irregular turbulence in the space of the circular weft machine, and enter various corners and gaps of the device.
The metal parts of the circular weft machine and the knitting needles running in the triangle track are all operated under lubrication. In high-speed operation, the lubricating oil vaporizes into oil mist particles and is emitted into the air, which is adsorbed by the yarn, the fly flower and the fly floc. In particular, the antistatic oil agent applied to the surface of the chemical fiber and the lubricating wax applied to the surface of the natural fiber yarn will vaporize when the yarn running at high speed rubs against the yarn guide hole to form various misty particles in the air. It is free and adsorbed on the surface of the flying flower or flying floc, or as the airflow enters the electrical control device of the yarn feeding device, and adsorbs and accumulates on the surface of the electrical contact, the rotating hole of the tension control rod and the surface of each component. Over time, these easily removed oil mists and stains will form a layer of dirt on the control device cavity and on the surface of each part.
Sealing inspection yarn feeder technology When the yarn tension fluctuation, yarn breakage, and empty yarn occur on the yarn passage, the electric control device cannot close the machine circuit in time, thereby forming a woven fabric with holes, broken needles, yarn skipping, etc. Rickets. Controlling malfunctions or lags can cause more problems such as fault deterioration, machine damage, broken needles, and needles. Repeated failures can affect the normal operation of the work, making the quality of the fabric difficult to control. The fly ash and oil stain adsorbed and accumulated on the rotating hole of the tension control rod also seriously affect the sensitivity of the tension adjustment of the control rod, resulting in erroneous shutdown, slow yarn breakage, lag of empty yarn, and various faults such as self-stop. It is a common problem of all current yarn conveying devices. Therefore, the sealing property becomes an important indicator for evaluating the technology of the yarn feeder.
New yarn feeder solves the sealing problem Ningbo Sun Textile Machinery Co., Ltd. scientific research and technical research based on the common technical problems arising from various types of yarn feeders produced by various countries in the world, aiming at the two main reasons affecting the yarn feeding function Innovate and improve, and successfully produce a new generation of yarn feeders--NPF-type yarn feeders, which solves the problem of the electrical controller sealing problem of the yarn feeder and the sensitivity of the tension control rod, and obtains the invention patent.
The electrical controller of the NPF type yarn feeder is a sealed structure, which greatly improves the cleanliness of the space, can keep the electrical contacts clean state for a long time, and is not affected by the external turbid airflow; ensuring that the tension control lever of the yarn feeding device can sensitively react to the outside world. The yarn tension changes, and when the yarn breakage, the empty yarn, the yarn twist and the like occur, the reaction is sensitive, and the machine circuit can be cut off in time to display the shutdown signal. Due to the good sealing inside the controller, the metal movement fatigue of the contact element is greatly reduced, and the service life of the electrical contact is improved.
Above-mentioned equipment was successfully developed by Changchun Gold Research Institute in 1998. It has possessed three patents and five monopolized technologies. Desorption solution does not contain sodium cyanide, it can reduce the grade of barren carbon down to 100g/t. The key technology of this equipment is that it can ensure the balance of metal quantity, and avoids gold- accumulating and gold- floating from the equipment, ensures the technological index steady and low cost of it. The content about technological advantages has been broadcasted by Xing Huo Science and Technology of CCTV. This technology was appointed as the energy-saving technology of gold production by National Development and Reform Committee in 2006, and was also appointed as standard equipment in the industry by National Development and Reform Committee in 2007, it passed the technique identifying in 2003, and won the second award of science and technology of China National gold Association, the entire technical level is advanced at home. This equipment has won three patent rights of China. The patent numbers of it are separately: 01241537.5 01241538.5 200620029209.1
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