How much do you know about POY spinning machine?

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I. Basic introduction

Textile machinery is all kinds of machinery and equipment needed to process natural or chemical fibers into textiles. Although the machinery for the production of chemical fibers includes a variety of chemical machinery, it is now considered an extension of textile machinery. It is textile machinery in the broad sense.

The processes required to process different fibers, such as cotton, linen, silk, wool, etc., into textiles are other, and some are completely different, so the machines needed are also various and varied.

Textile machinery is usually classified according to the production process, including spinning equipment, weaving equipment, printing and dyeing equipment, finishing equipment, chemical fiber drawing equipment, reeling equipment, and non-woven fabric equipment. Spinning gear is divided into processing staple fibers and processing long fibers. Cotton and cotton chemical fibers are short fibers, and wool, linen, silk, and blended chemical fibers are long fibers.

The processing process of the two types of fibers is different, and the equipment is not universal, except that some machines have similar design principles. Even with the same equipment, the machine’s structure is identical. Still, it is generally not universal due to the nature of the raw material and the final requirements for the fabric.

PET PP PA POY FDY BCF spinning machine
PET PP PA POY FDY BCF spinning machine

Ⅱ. What kind of silk is POY

POY is pre-oriented silk, a full polyester textile raw material. POY is pre-oriented silk, a full polyester textile raw material. It is silk drawn directly from a polyester slice (made of petroleum extract) by spinning equipment using the melt spinning method. When the speed of high-speed spinning is 3000-3600m/min, the pre-oriented wire can be prepared. The fiber produces a certain orientation at a high wind speed, and the structure is relatively stable.

Ⅲ. Features of poy spinning machine

1. Technological

In modern times, people have deepened their understanding of the structure and physical and chemical properties of fibers, thus creating more advanced technological methods that can give full play to the characteristics of yarns and fabrics.

2. Continuity

The continuity of POY spinning machine textile machinery is subject to the process flow. The process needs to go through cotton, carding, binding, roving, spinning, etc., so the drawing must be distributed to the corresponding equipment of each method to complete it.

3. Complete

 The completeness of POY spinning machine textile machinery is also subordinate to craftsmanship. For example, complete sets of machines are configured according to the cotton spinning process. The process requirements determine the fixed relationship between the sequence of models and the number of devices. Therefore, the completeness of textile machinery exists not only in one factory but also between factories.

4. High speed

One of the main development features of modern textile machinery is to continuously improve the machine’s running speed to obtain high output, reduce the number of equipment, reduce the plant area, save investment and labor, and achieve greater results with less capital.

5. High efficiency

The high efficiency of textile machinery is achieved by adding corresponding other measures based on high speed. For example, the self-leveling device of the exhaust cotton box and carding machine is successfully developed, and the combination of cotton cleaning and carding is realized so that the coiling process and the cotton coiling device are eliminated, a large amount of handling work is saved, and efficiency is improved.

6. Maintenance-saving

Modern textile machinery is designed to reduce maintenance and extend service life. Careful consideration has been given to selecting materials and formulating heat treatment processes to ensure long service life and reliable operation of parts.

7. Low energy consumption

Energy conservation in textile machinery is focused on dyeing and finishing equipment because of the great potential in this area. Although spraying dyeing liquid in the machine requires a high-capacity pump to increase power consumption, the overall energy is saved. Transfer printing was used in production practice in the 70s. It is characterized by low emissions, energy-saving, and less pollution. The use of solvent sizing can reduce water and energy consumption.

Ⅳ. Main composition of POY spinning machine equipment

  1. Screw extruder
  2. Melt filter
  3. Spinning boxes and components
  4. Biphenyl generators and their piping systems
  5. Metering pump and transmission
  6. Side blowing and oiling system
  7. Yongdao
  8. Air conditioning units
  9. Winding rack
  10. Winding machine
  11. Electronic control system: including screw voltage control cabinet, spinning box temperature control cabinet, metering pump, oil pump inverter cabinet, winding inverter cabinet, and conventional electrical control system.
    PET PP PA POY FDY BCF spinning machine
    PET PP PA POY FDY BCF spinning machine

v. Brief description of JWELL‘s poy spinning machine process

① POY turning machine melt extrusion: The slice enters the screw extruder, heats the piece through the heating element installed on the screw sleeve, and the portion runs forward along with the screw groove friction and is extruded so that the portion is heated and melted, and compressed and conveyed by the extruder to generate a certain melt pressure.

② Melt mixing: The slice is unevenly heated in the extruder, resulting in an uneven melt, which will greatly affect the spinning operation and product quality, so the melt needs to be mixed. The POY spinning machine mainly uses the last section of the extruder plus a pin for mixing. At the same time, the melt also produces a mixing effect in the metering head and spinning box.

③ Filtration: After the melt comes out of the extruder, the internal impurities and gel particles seriously affect the spinning effect and clog the spinneret, so the melt needs to be filtered.

④ Metering: The melt self-jacketed conveying pipe enters the spinning metering pump after initial filtration. It is metered through the metering pump and, at the same time, gives the melt a certain pressure so that the melt is better extruded from the nozzle hole.

⑤ Filtration spray: The melt after preliminary filtration and metering by the metering pump enters the assembly under a certain pressure. The melt in the body is further finely filtered and mixed and finally extruded from the nozzle hole.

⑥ Cooling molding: After the melt self-blasting hole is extruded, it solidifies and forms under the cooling of the side blow. To ensure product quality, provide that the melt self-ejection hole does not cool suddenly after extrusion, so the cold plate needs to be slowed down, and the air temperature, rheumatism, and wind speed must be suitable.

⑦ Cluster oiling: The poy spinning machine uses a grease nozzle to lubricate. The position of oiling has a great influence on the POY, and the size of the oiling rate impacts the quality of the POI roll forming and post-processing.

⑧ POY is spinning machine winding: After the bundle is oiled, it is finally wound and formed on the winding head at high speed.

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