COLD FEED RUBBER SILICONE EXTRUDERS cont.
www.davis-standard.com
ELASTOMER
At A Glance
COLD FEED RUBBER SILICONE EXTRUDERS
• Availableasasiliconestrainer,withaverticalcrosshead,andinLo-Boyconfigurations
• Uniquepneumaticrollerfeedertocompensateforfeedstripvariations
• Optionalstainlesssteelhopperwithsightglassforpelletstockcapability
www.davis-standard.com
Forlaboratory,coextrusion,andsiliconestripingapplications,Davis-Standardmanufacturesacompletelineofcoldfeedrubbersilicone
extruders.Availableinseveralconfigurationsandsizesrangingfrom11/2-inch(40mm)to8inches(200mm),theseextrudersoffer
processorsthetypeofversatilityanddependabilityrequiredforlaboratoryandspecialtyrubberapplications.
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MACHINE DESIGN PARAMETERS
Size 1 ½ in. (40mm) 2 in. (50mm) 2 ½ in. (65mm) 3 ½ in. (90mm) 4 ½ in. (115mm) 6 in. (150mm) 8 in. (200mm)
Phys
ical D
ata
Extruder Approx. wt.
1,700lbs.
(771kg)
2,000lbs.
(907kg)3,250lbs.(1474kg)
5,250lbs.
(2381kg)
8,650lbs.
(3924kg)
11,500lbs.
(5216kg)12,000lbs.(5443kg)
Center Line421/4in.
(1073mm)
421/4in.
(1073mm)
421/4in.
(1073mm)
421/4in.
(1073mm)421/4in.(1073mm)
421/4in.
(1073mm)421/4in.(1073mm)
Length 47in.(1194mm) 51in.(1295mm) 61in.(1549mm) 78in.(1981mm) 97in.(2464mm) 127in.(3226mm) 120in.(3048mm)
Width 43in.(1092mm) 43in.(1092mm) 45in.(1143mm) 62in.(1575mm) 66in.(1676mm) 71in.(1803mm) 71in.(1803mm)
Screw Removal 33in.(838mm) 37in.(940mm) 55in.(1397mm) 60in.(1524mm) 73in.(1854mm) 96in.(2438mm) 86in.(2184mm)
No. Barrel Zones 1 2 2 2 2 3 2
L/D Ratio1 10.5:1 10.5:1 10.5:1 10.5:1 10.5:1 10.5:1 7:1
Standard Feed Strip
3/8x13/4in.
(10mmx44mm)
3/8x21/4in.
(10mmx57mm)
3/8x23/4in.
(10mmx70mm)
3/8x33/4in.
(10mmx95mm)
3/8x43/4in.
(10mmx121mm)
3/8x61/4in.
(10mmx159mm)
3/8x81/4in.
(10mmx210mmmm)
Gear
box
Gear Ratio 6.53:1 6.53:1 17.26:1 17.39:1 17.36:1 17.21:1 17.21:1
Thrust Bearing B-10 Life 500,000 398,000 546,000 421,000 137,000 257,000 32,000100 RPM 5000 psi
Standard Rubber HP 15HP 20HP 30HP 60HP 125HP 200HP N/A
Standard Silicone HP 5HP IOHP 20HP 40HP 60HP 100HP 125HP
Standard Timing 5ORPM 50RPM 60RPM 60RPM 5ORPM 40RPM 40RPM
Max. Rating .33HP/RPM .33HP/RPM .76HP/RPM 1.58HP/RPM 2.24HP/RPM 5.44HP/RPM 5.44HP/RPM
Serv
ice R
equi
rem
ents
Rubber Drive & Temp. Control2 46FLA 62FLA 78FLA 120FLA 232FLA 343FLA N/A
Silicone Drive Only 15FLA 21FLA 33FLA 65FLA 91FLA 152FLA 180FLA
Water3 5GPM l0GPM 14GPM 27GPM 34GPM 40GPM 45GPM
Inlet & Outlet Pipe Size 1in.(25mm) 1in.(25mm) 1in.(25mm) 11/2in.(40mm) 11/2in.(40mm) 11/2in.(40mm) 11/2in.(40mm)
Closed Loop Tank Capacity 15gal.(57liters) 15gal.(57liters) 15gal.(57liters) 15gal.(57liters) 30gal.(114liters) 30gal.(114liters) 30gal.(114liters)
Air Requirements (Static) 50PSI 50PSI 50PSI 50PSI 50PSI 50PSI 50PSI
Basedonstandardvoltage460/3/601OptionalL/DRatiosAvailable2BasedonStandardDrive&TemperatureControl3SystemNormalTemperatureProfiles
DAVIS-STANDARD, LLC#1 Extrusion Drive
Pawcatuck, CT 06379-2313 | UNITED STATES Tel: +860-599-1010 | Fax: +860-599-6258
D-S BROOKES LIMITED18A Brewins Way | Hurst Business Park
Brierley Hill | West Midlands | DY5 1UF | UNITED KINGDOMTel: +44 (0) 1384 471930 | Fax: +44 (0) 1384 671734
COLD FEED RUBBER SILICONE EXTRUDERS cont.
www.davis-standard.com
SUPERIOR GEARCASE
• Horizontallymounteddoublereductionparallelshaftreducerwithintegralthrustbearingforsimplicityandeconomy.
• Singlereductiongearboxfor11/2-inch(40mm)and2-inch(50mm)extruders.
• Leak-free,non-contactinglabyrinthoilsealsneverwearout,eliminatingexpensiveoilsealmaintenance.
• Thrustshaftismountedonpre-loadedradialbearingstomaintainperfectscrew-to-barrelalignmentinspiteofheavybullgearradialloading.
• Singlehelixgearteethforquiet,vibration-freeoperation.
• AllgearingmachinedtoAGMAClass11specifications.
• Lubricationsuppliedtothegearsandbearingsbyanexternallymounted,positivedisplacementgearpumptoprovideampleoilthroughtheentireRPMrange.
PRESSURE ROLLER FEED
• Automaticfeedrollregulationwithminimaloperatorrequirements.
• Feedrollrateregulatedbyapneumaticallycontrolledtorque-sensingclutchdrivenfromthemainthrustshaft.
• Uniform,consistentfeedratethatautomaticallycompensatesforfeedstripsizevariations.
• Right-handfeedisstandardwithleft-handasanavailableoption.
• Feedsectionisamachined,highstrengthcastingcoredforwatercooling.Includesinstalledpipingandvalvesforthermalcontrol.
EXTRUDER BARREL
• Wear-resistantlinerofiron/boronbimetallicmaterialcastintoa4140steelbarrelassembly(harderalloysavailable).
• Integralliner/jacketconstructionprovidesmaximumheattransferefficiencyandmulti-zonefeature.
• Temperaturecontrolviaexternalwatercirculatingunitorcustomerplant,orchilledwatersupply.
• Barreldesignedforoperatingpressureupto10,000psi.
• Operatingtemperaturesrangefromwatersupplytemperatureto250ºF(121ºC).
• Barrelsuppliedwithrupturediscforoverpressureprotection.
HEAD CLAMP
• Doubleswingboltsprovideuniformsymmetricalclampingbydrawingthetaperedflangeswiththebreakerplateforpositivesealingandextrusionheadalignment.
HINGED HEAD SUPPORT
• Hingescanbemountedontheleft,right,orbothsides.
•Hingesdesignedforrapidheadclosureandalignment.
• Hingesareadjustableforproperalignmentandmaybeswungtothesideofthemachineforpreheating,cleaning,andtoolchanges.
• Hydraulicclampsalsoavailable.
ASSOCIATED EQUIPMENT (STANDARD)
• Stockscrew,coolingpipe,andunion
• Breakerplate,screens,orspacerring
• Belts,sheaves,andbeltguard
• Pressuretransducerandindicatorwithhighalarmshutdown
•Maintenancemanuals
• Pressurealarms(hi-low)
ASSOCIATED EQUIPMENT (REQUIRED)
• Extrusionstockscrew
• Temperaturecontrolsystem
• Drivesystem
• Extrusionheads
OPTIONAL EQUIPMENT
• Commonbase
• OCS,drivecabinet,motormountedandwired
•Manifoldpiping
• Airpadsorcasters
• Pivotassembly
• Dualhinges
• Stocktemperatureindication
• Variousrollerfeedratios
• Stainlesssteelhopperandadapter
OPTIONAL EQUIPMENT cont.
• Lo-Boy
• Specialliners
• Optionalbreakerplates
• Screwjack(manual,auto)
• Fulllaboratory,instruments
• Extendedspeed(fieldweakening)
• Jogreverse
• Precisiondriveregulation
• Coordinateddrive
• Cleanroomgrade
• Specialpaint
1 ½ inch (40mm) 20:1 L/D 2 ½ inch (65mm) 20:1 L/D 3 ½ inch (90mm) 20:1 L/D – Lo-Boy 4 ½ inch (115mm) 20:1 L/D