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DOSING EQUIPMENT Precision Blending
The ultimate in precision blending
Modularity
Removable material hopper lid c/w coverplatefitspreboltedFeedmax series hopper loader flange.
Unique"Clip-on" corner window
Simple"clip-on"corner window provides fullviewformaterialinspectionanddetaches quicklyforsimpler,easier cleaning access compared to other designs.
Highest precision
Twoindependent24-bittechnologyloadcells providemoreprecise,noise-freeweightsignal readings than single load cell systems.
Easy handling Twohandles allowsafe easy handling of material hoppers.
Easilyremovable
Material hoppers made entirely ofwearresistant stainlesssteel and are equipped with self-locking toggle latches.
Reliablematerialdispensingvalves
Material hopperswithnormallyclosed integraldispensingvalvesforpositive shut-off.Theactuatingmechanism of the dispensingvalveispart of the center bodyfor simplehopperhandling without unpractical or unsafe hose or wire connections.
Ergonomic and dustproof
Simpleswingdoor,opensviaquickfastener without using tools.The doorissecured by a safetyswitch.
Advantages of Gravimax blenders
Highly precise dosing valves
Ingredient values entered asratioor in % via touch-screen.
Changing recipes without stopping. Material data base, progress display. Storageof500recipesnventory reports.
Preset batch count.
Simple operation
Unique flow-valves made from stainless steel for high abrasivewear applicationsare extremely fast,efficient and consistently reliable.Major ingredients and additives are precisely dosed to the desired set point.
Interchangeablesteel hoppers
Self-closing valvemechanismofferseasy cleaning and color change.The hopper is specially designed with no flow restricting or bridging parts in the hopper.Two convenient handles allow safe and easy material hopper handling.
"Clip-on"corner window
Unique"clip-on”corner windowprovides fullviewformaterial inspection.The corner windowdetachesquicklyforsimpler and easiercleaning accesscompared to other blender designs.
Easilyremovableweighbin
Two weigh cell slide bars and a 60° dischargeanglegeometryprovidecomplete emptying aftereachbatch.Theself-closing dischargeflapmechanismpreventsrelease ofmaterialfrom theweighbinin the event of pressure loss.
Uniformmaterialblending
Highly efficient spiral mixer provides a ho mogeneous materialblend and allowsfor easycleaning.Thehemisphericalgeometry of the spiralmixer guarantees nodead spots or material hang-up.
RTLS Technology Material savings reduce cost
A unique2-stagemeteringmethodachievesthemostprecise despensingforbatch-to-batch consistency and accuracy. Thisis accomplishedbyusing progressivelysmallerdispensing algorithmstoapproachthetargetweight.Onlyonestandard highprecisionvalveis used forpellets,regrind,additives.
Batch-to-batch accuracy meansno overuse of highcostresins,optimizingthematerialconsumptionfortheproductrequirement. Every batch is consistent and to the desired formula.No"hunting" or statistical averaging to achieve the required target.
Step 2:Fine pulsing Controlled highfrequency dispensing precisely to target.
Where do the savings come from?
By ensuringbatch-to-batch accuracybymeansof RTLS (RealTimeLiveScale)technologytheoperatorcanset thepercentagestotherequiredminimumlevel.Ascompetitiveblendingmethods areconstantlyoverdosing and underdosingtheminimumneeds tobe set to allow any underdosedbatch to still be at the requested percentage.
This results in overdosing all otherbatchessometimes evensignificantly,causingtremendousexcessmaterial usage.RTLS can pay for itself in just a couple of months!
Gravimax blender series 1
Gravimax blender selection
| Model | Description | Batch size | Throughput* | Model | Description | Batch size | Throughput* | ||||
| kg | Ibs. | kg/hr. | Ibs./hr. | kg | Ibs. | kg/hr. | Ibs./hr. | ||||
| GMX 14 | 4 Materials | 1 | 2.2 | 80 | 170 | GMX185 | 5Materials | 18 | 40 | 1,200 | 2,640 |
| GMX34 | 4 Materials | 3 | 6.6 | 400 | 882 | GMX186 | 6 Materials | 18 | 40 | 1,060 | 2,340 |
| GMX76 | 6 Materials | 7 | 15 | 700 | 1,540 | GMX187 | 7Materials | 18 | 40 | 950 | 2,100 |
| GMX94 | 4 Materials | 9 | 20 | 680 | 1,490 | GMX188 | 8Materials | 18 | 40 | 900 | 1,980 |
| GMX95 | 5Materials | 9 | 20 | 540 | 1,190 | GMX274 | 4 Materials | 27 | 60 | 1,770 | 3,900 |
| GMX96 | 6 Materials | 9 | 20 | 490 | 1,070 | GMX275 | 5 Materials | 27 | 60 | 1,560 | 3,420 |
| GMX97 | 7Materials | 9 | 20 | 410 | 900 | GMX276 | 6Materials | 27 | 60 | 1,500 | 3,300 |
| GMX98 | 8Materials | 9 | 20 | 330 | 720 | GMX 277 | 7Materials | 27 | 60 | 1,440 | 3,180 |
| GMX184 | 4 Materials | 18 | 40 | 1,500 | 3,300 | GMX278 | 8Materials | 27 | 60 | 1,380 | 3,060 |
Gravmiax blender series 3
Gravimax blender series 9
Gravimax blender series 18 and 27
Engineered solutions for maximum throughput
| Gravimaxseries18 | |
| Batch size | 18 kg (40 Ibs.) |
| Valve | 100 mm (4") |
| Lid prepared for | Feedmax 400 series |
| Max.number of comp. | 8 |
| Hopper size 1-4 | 147 1 (180 Ibs.) |
| Hopper size | 34 I (40 Ibs.) |
| Gravimaxseries27 | |
| Batch size | 27 kg (60 Ibs.) |
| Valve | 150 mm (6") |
| Lid prepared for | Feedmax 400 series |
| Max.number of comp. | 8 |
| Hopper size 1-4 | 1581 (200 Ibs.) |
| Hopper size 5-8 | 681 (80 Ibs.) |
Blender control
Gravimax control
Designed for simplicity, ease-of-use and high efficiency
Thelarge easy-to-see buttons on the touch screenmakeiteasytooperateinall typesof light conditions and ensures the operator hasa large surface area to makechanges or adjustments in the operation of the blender.
Standard features
_{\mathfrak{D}} Control of up to8 components
》Dosing-technology Precisemetering through adaptive control algorithms. RTLS (Real Time Live Scale) technology 2-stage progressive metering method for the most precise target weight.
2 "On the fly" feature Change recipes and parameters without stopping production.
> Reports Cycle,total run and inventory reports.
_{\mathfrak{D}} Connectivity options(Ethernet) Compatible with centralPCs,PDAs laptops.
） "SmartRegrind"mode Automaticrecipe adjustment, dependingontheavailabilityofthe material.
》Mixing Timed or continuous.
_{\Rightarrow} Userinterface Thehandling of the userinterface is conformto the otherWITTMANN manual controlelements. Percent preset Eachingredient value can be entered in % or as ratio.
x Unit values Operates in metric orimperial.
_{\Rightarrow} Display operating conditions Displays the recipe running, setpoint and actual values,process rate.
Materialsidentification Alphanumeric key pad for clear material identification. Recipe maintenance 500recipes stored on the local memory.
D Presetbatchcount Automaticblendershutdownafter reaching the preset batch count.
> Material bridging Special dosing algorithmsare loosening bridgeformations of material in the hoppers.
Security 3adjustable securitylevels with freely selectable access codes.
x Referenceadditive Automatic adjustment of ratio to avoid an overdosing of expensive additives. Self-optimization Independent adjustment of the dosing behaviour to varying flow characteristicsofdifferentmaterials Secure mounting of the load cells formostexactmeasurement and long-lasting use. Controlpanelwithstandard electricalcomponentsforreliable operation andeasy maintenance. OPCUAinterface allowsa bi-directional exchange of data und setings.. Power supply 110V/230V/1/50-60Hz
GraviLog
raviogisthenamefasoftwareolutinthathasbeeneseialldevelopedfordatarecordingfgravimetriclenderf theWITravmaxserihmprhniveftwaremaketeaytanalyeariosdiffringactorsfream thematerialconumptionfseveraldeviceinregardtaspecialworkingproce.ndusingravilogmakesitpoilet generate graphical representationsfortarget and performance values.
Dosimax Volumetric dosing systems
Dosing cylinder
Many applicationsforthe processing of additives andcolorsrequiresmall and repeatablematerialadditionswithin tight tolerances.The dosing cylinder guaranteesauniformandrepeatable flow throughout a widerange of applications.
Becauseoftheconstantspeedofrotation,the dosing cylinderis actuated by a stepping motor.The specific design guaranteesthatthemasterbatchis blended uniformly and precisely.The avoidanceofanypulsing duringblending providesmaximum control of the process and the end product.
Dosimax MC basic
Technicalfeatures
》Digital revolution setting from 0 to 200 rpm within 0.1 rpm steps.
(3) Digital time setting from 0 to 999 sec. within 0.1 sec.steps.
(3) Timer mode for injection molding applications.
_{rm{\scriptsize3}} Keyboard lock: 1 level.
_{\mathfrak{D}} 4-digit, 7segment LED at front display.
》Man/machine interface viakeypad foil.
Dosimax MC 12 and MC balance
Technicalfeatures
_{\mathfrak{D}} Digitalrevolutionsetting from 0 to 200 rpm within 0.1 rpm steps.
\nRightarrow Digital time setting from 0 to 999 sec.within 0.1 sec.steps.
》Keyboard lock:1 level.
》4-digit, 7-segment LED at front display.
》Man/machine interface via keypad foil.
\mathfrak{H} Neckpiece with cleaning door.
\gg Quick material discharge slide gate.
MC12additionalfunction
》Timer and relay mode for injection molding applications.
MCbalanceadditionalfunctions
》Tachometersynchronization for extrusion applications.
》（ Constant dispensing through automatic adjustment of rotation speed.
》Integrated conveying control.
Dosimax selection table
| Function | MC basic | MC 12 | MC balance |
| Feeding principle | volumetric | ||
| Calibration | manual | automatic | |
| Control functions | |||
| Revolution set | manual | automatic | |
| Time set | manual | automatic | |
| Automatic dosing time synchronization | |||
| Extruder"tachometer”mode | |||
| Interface communication RS-232/485 | 。 | ||
| Keyboard lock | 1 level | ||
| Integrated conveying control | multiple levels | ||
| Material/Feeding capacity | |||
| Micro granules | · | . | |
| BASIC-System 0.2 to 5 g/s | |||
| GLX-System* 0.02 to 1.6 g/s | 。 | 。 | 。 |
| GX-System* 0.2 to 5 g/s | · | ||
| A-20 System** 0.5 to 20 g/s | 。 | ||
| A-30 System** 2 to 50 g/s | 。 | ||
WITTMANN Technology GmbH
Lichtblaustrasse 10
1220 Viennal Austria
Tel: +43 1 250 39-0
info.at@wittmann-group.com
www.wittmann-group.com
