The circular knitting machine is mainly composed of a yarn supply mechanism, a knitting mechanism, a pulling and winding mechanism, a transmission mechanism, a lubrication and cleaning mechanism, an electrical control mechanism, a frame part and other auxiliary devices.
1. Yarn feeding mechanism
The yarn feeding mechanism is also called the yarn feeding mechanism, which includes a creel, a yarn feeder, and a yarn guide and a yarn ring bracket.
Requirements for yarn feeding mechanism:
(1) The yarn feeding mechanism must ensure uniform and continuous yarn feeding and tension so that the size and shape of the knitted fabric loops remain consistent, thereby obtaining a smooth and beautiful knitted fabric.
(2) The yarn feeding mechanism should maintain a reasonable yarn feeding tension, thereby reducing missed stitches on the fabric surface and reducing weaving defects.
(3) The yarn feeding ratio between each knitting system must be consistent. The amount of yarn feeding should be adjustable to meet the needs of changing products
(4) The yarn feeder should make the yarn more uniform and the tension more uniform, and effectively prevent yarn breakage.
2. knitting mechanism
The knitting mechanism is the heart of the circular knitting machine. It is mainly composed of the cylinder, knitting needles, cam, cam seat (including the cam and cam seat of the knitting needle and sinker), sinker (commonly known as Sinker sheet, Shengke sheet), etc.
3. Pulling and winding mechanism
The function of the pulling and winding mechanism is to pull the knitted fabric out of the knitting area and wind it into a certain package form. Including pulling, rolling roller, spreading frame (also called fabric spreader), transmission arm, and adjusting gear box. Its characteristics are
(1) There is a sensor switch installed at the bottom of the large plate. When a transmission arm equipped with a cylindrical nail passes, a signal will be generated to measure the number of cloth rolls and the number of revolutions.
(2) Set the number of revolutions of each piece of cloth on the control panel. When the number of revolutions of the machine reaches the set value, it will automatically stop to control the weight error of each piece of cloth within 0.5kg, which is beneficial to post-dyeing processing. With cylinder
(3) The revolution setting of the rolling frame can be subdivided into 120 or 176 sections, which can accurately adapt to the rolling requirements of various knitted fabrics in a wide range.
4.Conveyor
The continuously variable speed motor (motor) is controlled by the frequency converter, and then the motor drives the driving shaft gear and at the same time transmits it to the large plate gear, thereby driving the needle barrel to run. The driving shaft extends to the circular knitting machine and then drives the yarn feeding mechanism.
5. Lubricate and clean mechanism
The circular knitting knitting machine is a high-speed, coordinated and precise system. Because the yarn will cause a large amount of fly lint (lint) during the knitting process, the central component that completes the knitting will easily suffer from poor movement due to fly lint, dust and oil stains, causing serious problems. It will damage the equipment, so the lubrication and dust removal of moving parts is very important. At present, the circular knitting machine lubrication and dust removal system includes fuel injectors, radar fans, oil circuit accessories, oil leakage tanks and other components.
Features of Lubricating and Cleaning Mechanisms
1. The special oil mist fuel injection machine provides good lubrication for the surface of the knitted parts. The oil level indication and fuel consumption are intuitively visible. When the oil level in the fuel injection machine is insufficient, it will automatically shut down and warn.
2. The new electronic automatic refueling machine makes setting and operation more convenient and intuitive.
3. The radar fan has a wide cleaning area and can remove fly flakes from the yarn storage device to the knitting part to avoid poor yarn supply due to tangled fly flakes.
6.Control mechanism
The simple button operation control mechanism is used to complete the setting of operating parameters, automatic stop and indication of faults. Mainly includes frequency converters, control panels (also called operation panels), electrical control boxes, fault detection equipment, electrical wiring, etc.
7.Rack part
The frame part includes three legs (also called lower legs), straight legs (also called upper legs), large plate, three forks, protective door, and creel seat. It is required that the rack part must be stable and safe.
Post time: Mar-09-2024