Tài liệu extruders docx

a screw-type extruding machine Additional devices Cooling system in the closed cycle Material funnel Plastification unit Nozzle waterbath for the cooling of the hot Extrudates Granu

a screw-type extruding machine

Additional devices

Cooling system in the closed cycle

Material funnel

Plastification unit

Nozzle waterbath for the cooling of the hot Extrudates

Granulator

Fresh air dryer

Process description

The material funnels are to be filled by hand with the material which can be

extruded The chute section of the Plastification unit

is fed by the material funnel continuously with homogeneous raw beginning The function of the Plastification unit

is it to produce a homogeneous melt The energy (amount of heat), necessary for it,

is stopped by means of at extrusion automatic controllers present After withdrawing the Extrudates from the strand nozzle the withdrawing plastic strands are to be

introduced by hand to the following waterbath supplied to the granulator The

granulator is to be adjusted with the adjustment the available to the necessary strand strength In the granulator the strands cooled down by the waterbath cut on a

continuous length and supplied by way of a failing judge to the collector (cardboard) During the extruding it is to be made certain that the level in the material funnel will keep always upright, since otherwise running dry the machine begins, which can lead

to damage to the system After the extruding extrusion with cleaning agent is to be driven so for a long time cleanly, until at the strand nozzle only pure material

withdraws and no withdrawing pollution disturb the picture of the withdrawing

Cleaning extr be cut off subsequently, the system is to be stored and the remaining small remainder at the nozzle with a putty or with a meter

WERNER AND PFLEIDERER DOUBLE SNAIL

double screw-type extruding machine with corotating non-standard configurable

two-worm drive

cooling system in the closed cycle

horizontal ones separation-poor Feeder

Plastification unit

waterbathor the cooling of the hot Extrudates

degassing zones

Process description

The horizontal Feeder arranged over the procedure unit are to be filled by hand with the material which can be extruded By the even discharge mechanism the chute section can continuously with homogeneous raw beginning directly in fill-hurries extrusion to be fed The continuous supply of the raw beginning enables a soft and even accommodation into the extruding section which the function has to subject the supplied material with energy i.e produce the melt and to disperse the brought in material in the best possible way The adjustment of the energy which can be put down is to be stopped by means of the automatic controller present on extrusion and

be plugged thus depending upon requirement (a pressure at small retention time) or

to rinse (a fewer pressure at extended retention time) After withdrawing the

Extrudates from the nozzle the withdrawing threads are to be contrived by hand into the following waterbath and supplied to the Granulator By means of deduction rate the necessary strand strength is to be stopped Following delivering or entering into the receptacle locks the field of this system

During the extruding it is to be made certain that the level in the Feeder will keep always upright, since otherwise running dry the machine can begin, which damage to the system can cause After the extruding extrusion with bonding agent is to be driven so for a long time cleanly, until at the nozzle only pure material withdraws and

no withdrawing pollution disturb the picture of the withdrawing Cleaningextrudates

To be cut off subsequently, the system is to be stored and the remaining small

remainder at the mouthpiece with pointed putty or with a meter

PLANET ROLLER EXTRUSION PLWE 100

planet roller extrusion with separated keep at a moderate temperature chute section, function of sun wheel drive with 6 pieces of diagonally-toothed and by the sun wheel

propelled planet spindles, 45° interlocked with 2 discharge level

additional devices

cooling system in the closed cycle

horizontal ones separation-poor Feeder

waterbathfor the cooling of the hot Extrudates

degassing zone

Process description

The horizontal Feeder arranged over the procedure unit is to be filled by hand with the material which can be extruded By the even discharge mechanism the chute section can continuously with homogeneous raw beginning directly in fill-hurries extrusion to be fed The continuous supply of the raw beginning enables a soft and even accommodation into the extruding section procedure section, which has the function to subject the supplied material with energy i.e produce the melt and to disperse the brought in material in the best possible way The adjustment of the energy which can be put down is to be stopped by means of the automatic controller present on extrusion and be plugged thus depending upon requirement (a pressure

at small retention time) or to rinse (a fewer pressure at extended retention time) After first withdrawing the Extrudates of the first extruding level into the second extruding level is to be particularly paid attention to the power input of the system, since a short term rise of the power requirement would know the system overloads and the

necessary brief crest currents a tuning of the drive could have as a consequence Then the extruded and well dispersed material comes from the mouthpiece is the withdrawing threads into the following waterbath to be contrived by hand and to the Granulator supplied If visible steams withdraw at the degassing opening, then the vacuum mechanism is to be set and the negative pressure is enough in such a way

to increase, until this smoke fog is no longer visible The regulation of the negative pressure is transacted over a slidegate valve present on the suction bell The

Granulator is to be adjusted with the adjustment the available to the size of which can

be obtained (approx 2 mm) cut seaweeds Following delivering or entering into the receptacle locks the field of this system During the extruding it is to be made certain that the level in the Feeder will keep always upright, since otherwise running dry the machine can begin, which damage to deposit cause can After the extruding

extrusion with bonding agent is to be driven so for a long time cleanly, until at the mouthpiece only pure material withdraws and no withdrawing pollution disturb the picture of the withdrawing Cleaning extrudates To be cut off subsequently, the

pointed putty or with a meter