Suzhou Zhan Heng machinery to teach you to understand the components and functions of the spinning machine 

 1. Melting device 

 (1) Function: supply of solid materials, polymer melting, quantitative extrusion of melt. 

 (2) Screw three sections: feed section, compression section, metering section. 

 (3) The working principle of the screw extruder: that is, the partition of the screw and the movement of the material in the various areas of the screw. 

 ① Feed area (curing area) and other deep screw. 

 ② The first half (cooling area) jacket coil or screw inner core through cooling water, < 100℃ to prevent the material from melting prematurely and ring blocking material to protect the screw transmission mechanism from heat. 

 ③ The latter half (preheating zone) prevents the temperature mutation of the material from the feed zone to the compression zone.

 (4) compression zone (melting zone) gradual or abrupt screw melt material (heating, shearing) and compression (screw groove volume becomes smaller); Return air or water vapor to the feed area. 

 ⑤ Measurement area (homogenization area) and other shallow screw. Second, melt conveying, distribution, spinning and heat preservation device

 (1) Pipe bending: screw extruder to the spinning box melt conveying pipe (one end is connected with the screw outlet and the other end is connected with the spinning machine melt distribution pipe) - the biphenyl-diphenyl ether mixture in the jacket is heated (melt insulation). 

 (2) Spinning box: melt distribution pipe ten biphenyl heating box ten spinning pump and its transmission device ten spinning head assembly. 

 ① Principle of melt distribution tube

 ② Ensure that the melt reaches the same distance to each spinning site. The melt has a short residence time in the distribution tube. Less retraction. 

 ③ The form of melt distribution tube branch type, radiation type. 

 (3) Heating of the spinning box (biphenyl heating box) 

 ① Function: heat preservation and heating of melt distribution pipe, metering pump and spinning head assembly. 

 ② Method: Biphenyl - diphenyl ether heat carrier (biphenyl/diphenyl ether - 26.5%/73.5%), heated with an electric heating rod. 

 ③ Insulation: 80 ~ 100mm insulation layer, filled with ultrafine glass fiber or other insulation materials. 

 (4) Metering pump: high temperature gear pump. 

 (5) Spinning head assembly

 ① Function of filtering melt: prevent the blockage of the spinneret hole melt mix fully, reduce the difference in melt viscosity, and evenly disperse the melt into each small hole of the spinneret hole to form a trickle of melt. 

 ② Structure: spinneret + melt distribution plate + melt filter material + assembly sleeve combination. Third, spinning box heating (biphenyl heating box) 

 ① Function: heat preservation and heating of melt distribution pipe, metering pump and spinning head assembly. 

 ② Method: Biphenyl - diphenyl ether heat carrier (biphenyl/diphenyl ether - 26.5%/73.5%), heated with an electric heating rod. 

 ③ Insulation: 80 ~ 100mm insulation layer, filled with ultrafine glass fiber or other insulation materials. Four, wire cooling device 

 (1) Spinning window: the filament is only cooled by directional, quantitative and qualitative air flow during the cooling process, the cooling rate is uniform, and the solidification position of the fiber is fixed (not affected by the surrounding air flow). 

 (2) Slow cooling chamber: the lower part is provided with two insert plates before and after, so that it is separated from the cooling spinning cylinder, and the upper part is provided with a lock, so that the slow cooling zone is formed under the spinneret; Length 30~200mm; Prevent the cold wind from blowing the surface of the spinneret, reduce the birefringence of the winding wire and improve the stretchability.