Regular inspection of roller spindles
Ensure that the equipment is operating normally
　　
Zinser 668 roving machine uses 4 variable-frequency motors to drive the drafting roller and spindles of the pulling spindles respectively, and completes the winding and forming of rovings under computer control to achieve constant tension winding. The Zinser 668 roving machine has obvious advantages in increasing production, ensuring quality, reducing failures, and facilitating maintenance. However, due to the high installed power and high overall energy consumption of the whole machine, it is necessary to be familiar with the common faults and troubleshooting measures of the machine.
　　
Gaoyou Jingwei Textile Co., Ltd. encountered some common equipment failures when using the Zinser 668 roving frame. The corresponding solutions were: the flyer and the bobbin belt were tight, and the bearing (6206) was often damaged due to the inability to refuel, and it could be replaced by Refueling bearings; guide roller drive bearing configuration is too small (6002) often damaged, should be regularly checked and replaced; wound protection spring on the flap door and the plastic door is easy to damage, found inflexible or damaged should be replaced; under the cashmere The poor elasticity of the supporting plastic parts will cause more deformation and affect the cleaning effect. The solution is to replace the whole trolley with spring steel sheet; the dustproof boot of the flyer and the false twisting device will easily produce the protective sleeve to beat, and the dustproof sleeve can be fully performed. Turning and rebuilding; the gap between the front beamer and the front roller is too small, and the roller skin roller apron often appears. The solution is to replace the FA401-2100-34A beam bundler in Tianjin Textile Machinery Factory; The worm gear is easy to be damaged and should be replaced with a gear box or a worm gear. The gap between the spindle bar and the roving tube is too small, and the fly and roving heads are easily pinched, causing the roving tube to move up and down with the spindle bar, causing the spindle bar to change. Shape, the solution is to change the flyer, doffing correct when doffing, reduce the fly, to ensure there is no debris in the roving tube, or change the upper end of the original roving tube aperture, re-customized on the aperture large roving tube. (Wang Changhong)
　　
Core yarn decorated yarn with three yarns
Reconstruct roving machine to produce fancy yarn
　　
At present, the roving frame of textile companies is only used to produce rovings. Spinning rovings need to enter the next spinning process before they can be sold or used as finished products. The rovings spun out of existing roving machines have no structural changes and cannot be spun. Yarn used directly for weaving.
　　
Three types of yarns are required when using a roving machine to produce roving spun yarns, which are used as core yarns, gauze yarns and solid yarns. Under normal circumstances, the sliver with the lower number is selected as the gauze, and each roller of the roving frame is fed in turn. At the same time, two filaments are selected as the core yarn and the solid yarn respectively. The core yarn and the solid yarn are both in front of the roving frame. Feeding at the middle roller, wherein the core yarn and the drafted sliver are simultaneously output by the front roller, and after being twisted, enter the guide yarn magnetic eye. After the solid yarn is output from the front roller, the yarn guide is guided into the guide yarn magnetic alone. Eyes, which have been twisted with core yarns and gauze yarns that have been twisted together, form roving slivers.
　　
In order to produce a roving fancy yarn, we have mainly implemented the FA415 roving frame in the following aspects. First, add seats. The operation of an ordinary roving frame requires only feeding slivers, but when it is used to produce roving slivers, three feed ports are required. Therefore, two rows of sliver bases need to be added, one of which is used for core arranging. Secondly, to increase the yarn guide bar and the spring tensioner, a total of three yarn guide bars need to be added, of which two common guide core yarns and a solid yarn are used, and one is used to guide the yarn alone. Finally, add yarn guides. (willow)
　　
Refitting bobbin
Save roving test time
　　
The bobbin that traditionally tests for roving elongation is a bobbin that is normally used by a roving frame. The test elongation is easy to operate for the ingot roving frame, but for the modern new roving frame, the test is relatively complicated because the ingots are mostly suspended. When the roving frame is doffed, it is necessary to adjust the lifting ribs when driving. When fixing the bobbin, the ribs rise only after the height of the ribs reaches a certain height. When doing the roving elongation test, it is especially troublesome when it is used in the middle yam. . Because it is necessary to do a roving elongation test on the roving frame, the bobbin must be taken off and the roving frame is stopped in the non- doffing state. When the car is stopped, the downforce is not at the lowest position. Only the downforce is manually adjusted. Only after the bobbin can be removed, but this will lead to severe roving breakage on other spindles, increasing the labor intensity of the operator.
　　
In order to solve this problem, the company’s staff continuously pondered and repeatedly tried to retrofit the roving bobbin, that is, using the top movable bobbin to solve this problem. The height of the movable bobbin was the same as the height of the normal bobbin, and its top was smooth. Hourly rotation. Since the bobbin and the flyer rotate in the same direction and clockwise, the bobbin head can be designed to rotate counterclockwise to ensure that the bobbin rotates with a self-tightening function. After this modification, the test sample yarn is made only after the cylinder The top of the tube can be unscrewed by the movable screw tube head. This not only reduces the height of the bobbin but also increases the inside diameter of the bobbin, making it easy to remove the yarn from the elongation test without having to pull down the ribs.
　　
This kind of active roving bobbin is currently used in the company's three branches. After a long-term follow-up survey, the company's employees agreed that the bobbin not only saves the adjustment time of the lifting and lowering of the ribs, but also facilitates the operation of the test personnel. This greatly improves the operating efficiency of the roving frame and the working efficiency of the testers, and ensures the extension of the roving. Long test timeliness.
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