Technology | Measures to reduce the difference in quality between spinning spindles

1, roving hanging ingots. It is required to be flexible, align the position of the spun yarn, and pay attention to the positioning of the hanging ingots beside the column of the creel. The rovings should not be subject to friction and scratching by the arm of the yarn guide. The position of the yarn guide should be compatible with the unwinding of the roving hanging ingots. (The operation should be done so that the adjacent 2 rovings do not cross feed.)

2, bell mouth . It is required to be firmly fixed on the flat iron, according to different spinning methods to determine the appropriate range of movement and adjust the appropriate, so that it is basically located in the middle of the roller when traversing The middle part); The interior should be smooth without burrs, no damage, no dirt, no grease, no accumulation of flowers and so on.

3, cradle. The cradle seat should be fixed on the cradle support rod and can not be loosened. It is required to work normally. Use the digital pressure gauge to correct the pressure in the front, middle and back of the three gears one by one, and press the standard pressure of ±5 newtons to control; the “three open files” must be consistent, on the bracket. The roller, the iron shell and the upper pin should be parallel with the roller (the unacceptable cradle claw and the retainer should be replaced in time), and the position of the pressure should be correct. The spring cradle must pay attention to ensure the elasticity of the spring, prevent failure, replace the unqualified ones in time, and not be out of service; the pneumatic cradle must pay attention to ensure the stability and balance of the air pressure.

4, roller, roller bearings. Roller requires solid support and works normally. The jump is less than 0.03mm, and the rotation is light and flexible; the roller surface must be intact and clean. When using a copper brush to clean the groove, use a soft cloth dampened with anhydrous alcohol or petrol, and thoroughly remove the cotton wax and miscellaneous matter adhered to the surface. Roller bearings should be intact and flexible. They must be refueled on time. Every day, the uniformity of roller bearings and roller neck rotation should be checked, and unqualified items should be promptly removed.

5. Roller gauge. Roller gauges must be calibrated so that there is no difference in accuracy. After the front roller flat school, we must seriously pre-school, before and after, and after the roller distance, loose, tight 0-0.03mm limit. Adjustable roller gauges must be calibrated with vernier calipers before each use. Conditional roller gauges can be made into fixed values ​​such as 18 or 17.5 mm.

6. The positioning of the roller, upper iron shell and upper pin. The front roller is accurate and consistent with respect to the front roller center front impulse, the upper iron case and the rear roller center respectively, and the rear roller center respectively. The front line of the front pin and the front pin of the front pin must be flush. In the pressurized state, the visual distance between the apron jaw and the front roller surface (commonly known as the one-line space) is not good to see the difference (when the variety is changed and the spacer is adjusted, the one-day gauge is also To do so).

7, on the middle of the middle leaf spring (if it is carbon fiber on the sale does not need this). If it is found that the pressure difference is relatively large or the installation is not in place, it should be replaced or adjusted in time, usually 2 to 3 years, all left and right.

8, the upper and lower pins (if it is on the carbon fiber do not need to do on the plastic pin). For every 4 to 6 months, the upper and lower pins need to be fully calibrated and reshaped and repaired, and special tools and quality standards must be followed. Do not use the crowbar for work (common misconduct) when working.

9, spacer block, apron jaws. It is advisable to use an arc-shaped single-faced spacer block with a 0.25mm bin, which is not only the same in size and color but also in the left and right legs of each spacer block. On the surface of the front pin of the lower pin, it is better not to insert it with a 0.05mm feeler. The apron jaws must be flush, that is, the upper pins must be flush with the lower pins.

10, the lower apron tension hook. Every time you pick up the car, you should check the tension hook of the lower apron. It is advisable to use a flexible swing and a good tension. Eliminate the unqualified tension, too tight and too loose.

11, leather ring. The model, manufacturer, new and old, new and old collocations of the apron, etc. must be the same for each car of each category. It is necessary to establish a reasonable replacement and retirement cycle. The apron cleaning cycle should be determined according to the type of fabric being spun, and the apron after the alight cleaning should be cleaned with special detergent. Replace the apron in cold weather and warm up the apron before getting on the bus and get it to the same or similar temperature as the workshop.

12, roller. To make fine, regular grind back, to minimize the difference from the roller itself, normal cleaning and use should be correct. The requirements for the diameter, service life, manufacturer, model, and surface treatment of the roller before and after the same type must be the same; in order to ensure the good operation of the front roller on the machine table, a dedicated or part-time person must be responsible for touching the machine every day. Roller, promptly found out before picking bad roller. In cold weather, we must brake the car and change the roller. Before we get on the car, we must carry out the preheating of the roller to reach the same or similar temperature in the workshop and then get on the train.

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