The structure of a spinning machine
Generally, the spinning machine itself has 4 functional areas.
Polymer melting device: screw extruder.
(2) Melt transmission, distribution, spinning and heat preservation device: bend pipe, spinning box (melt distribution pipe, metering pump, spinning head assembly).
Filament cooling device: spinning window and cooling sleeve.
Wire collecting device: wet oil feeding mechanism, wire guide structure, winding machine or wire receiving device.
The molten device
(1) Function of solid material supply, polymer melting, melt quantitative extrusion.
(2) Screw three feeding section, compression section and metering section.
(3) The working principle of the screw extruder is the movement of the screw area and the material in the screw area.
(1) Feed area (curing area) and other deep screw.
(2) The front part (cooling area) jacket coil or screw core through cooling water, < 100℃ to prevent premature melting of materials and ring plugging material to protect the screw drive mechanism from heat.
(3) The latter half (preheating zone) to prevent the material from the feeding zone to the compression zone temperature mutation.
(4) Compression zone (melting zone) gradual change or mutation of the screw molten material (heating, shearing) and compression (the volume of the screw tank smaller); Return air or water vapor to the feeding area.
Metering area (homogenization area) and other shallow screw.
Melt transfer, distribution, spinning and heat preservation device
(1) The melt conveying pipe from the elbow screw extruder to the spinning box (one end is connected with the screw outlet and the other end is connected with the melt distribution pipe of the spinning machine) -- heating of the biphenyl-diphenyl ether mixture within the jacket (melt insulation).
(2) Spinning box melt distribution tube decubphenyl heating box ten spinning pump and its driving device ten spinning head assembly.
The principle of melt distribution pipe
(2) Ensure that the melt reaches the same distance of each spinning position melt in the distribution tube residence time is short; Back to less.
(3) The form of melt distribution tube branch, radiation type.
(3) Heating of spinning box (biphenyl heating box)
(1) Function of heat preservation and heating of melt distribution pipe, metering pump and spinning head assembly.
(2) Biphenyl-diphenyl ether heat carrier (biphenyl-diphenyl-ether a 26.5%/73.5%), heating with an electric bar.
(3) Insulation layer of 80 ~ 100mm, filled with ultrafine glass fiber or other insulation materials.
(4) metering pump high temperature gear pump.
(5) Spinning head assembly
(1) The function of filter melt, prevent plug spinneret hole melt fully mixed, reduce melt viscosity difference, melt evenly dispersed to each hole in the spinneret hole to form a melt flow.
Structure spinneret + melt distribution plate + melt filter material + assembly sleeve combination.
Heating of spinning box (biphenyl heating box)
(1) Function of heat preservation and heating of melt distribution pipe, metering pump and spinning head assembly.
(2) Biphenyl-diphenyl ether heat carrier (biphenyl-diphenyl-ether a 26.5%/73.5%), heating with an electric bar.
(3) Insulation layer of 80 ~ 100mm, filled with ultrafine glass fiber or other insulation materials.
Wire cooling unit
(1) The spinning window enables the filament to be cooled only by directional, quantitative and fixed air flow during the cooling process. The cooling rate is uniform and consistent, and the fiber solidification position is fixed (not affected by the surrounding air flow).
(2) The lower part of the retarding chamber is provided with two front and rear inserting plates to separate it from the cooling spinning cylinder, and the upper part is equipped with a latching device to form a retarding area under the spinneret; 30 ~ 200 mm long; Prevent the cooling air from cooling the surface of the spinneret, reduce the birefringence of the winding wire, and improve the tensile property.
