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Two-Stage EjectorsFW18002-stage ejectors are used in situations where two ejection sequences are required, for example, to demold undercutswith inclined cores or ensure that slides do not collide with ejector pins. DME’s range of two-stage ejectors systems offertwo types of functionality.1. Ejector Plates Back2. First Ejector Stroke3. Second Ejector Stroke“Bottom last” using FW 1850 and TSBL types: 1st movement: both sets of ejector plates, 2nd movement: bottom set ofejector plates.1. Ejector Plates Back2. First Ejector Stroke3. Second Ejector Stroke“Top last” using FW 1800 and TSTL types: 1ste movement: both sets of ejector plates, 2nd movement: top set of ejectorplates.&Furthermore, two versions of installation are available:Central mounted using FW 1800 and FW 1850: this is thesimplest installation for smaller, less complex molds. Asingle unit (FW 1800 or FW 1850) is connected directly tothe machine ejector rod.store.milacron.com&Off-centre mounted using TSTL and TSBL: fully containedinside the mold preventing interference and accidentaltampering. Useful where the central space is not available. Two or four units are used allowing larger molds.277
Two-Stage EjectorsFW1800REFFW1800 M32x1,5FW1800 M42x1,5FW1800 M52x1,5FW1800 M62x1,5REFFW1800 M32x1,5FW1800 M42x1,5FW1800 M52x1,5FW1800 M62x1,5Two-Stage Single-Stroke W2A 27354456100152215*Recommended thread278store.milacron.com
Two-Stage EjectorsTwo-Stage Single-Stroke ejectorAssembly FW1800*Recommended thread1. Ejector rod2. Sliding sleeve3. Adjusting bush4. Assembly flange5. Segments6.PartStopringdesignation7. SpacerNr. 1 Ejector pin2 Sliding sleeve3 Adjusting bush4 Assembly flangeFitting:5 Segment1. Mountejector rod no. 1 together with ejector plate. For safety please use LOCTITE C 242.6 Stopringparts no. 2, 3 and 4 together and tighten up part no. 3 (SW2 see chart).2. Moveover7 Spacer3. Tightenupringadjusting bush no. 3 with assembly flange no. 4.4. Fix assembly flange.Recommended lubricants: C 135, C 138/139, C 170, etc.Installation instructions:This device is preferably screwed together with the hydraulic machine ejector.The required internal or external thread of part no. 1 has to be made adequately. The ejector rod no. 1 may not beshortened by more than length k1, if the total stroke h3 (h3 h1 h2), including a possible deeper run in of part no.1 into part no. 2, is not be maintained.By rotating adjustment of bush no. 3 the first stroke h1 is continuously adjusted. With stroke h1 both ejectorpin plates are moved simultaneously. On the following stroke h2 only the second ejector pin plate movement iscontinued. Choose the thickness of the spacer ring no. 7 so, that there is at least 0,05 mm clearance between theejector pin plates (see fig. 1).store.milacron.com279
Two-Stage EjectorsFW1850Two-stage single-stroke ejectorThe two-stage single-stroke ejector can beintegrated into injection molding tools.This ejector automatically divides themotion into two sequential strokes.The functional sequence associated withthis makes it possible to create new moldejection mechanisms.Through hardLeft-handed threadThrough hardREF d x H1 maxH1 maxH2d1d2d3d4d6d7d8d9d10FW1850 50x32FW1850 58x40FW1850 58x56FW1850 x1,50M6x16M8x20M8x20M8x2562727284REFl2l3l4l5l6l7 max.l8 max.SW1SW2SW3SW3NmSW4SW5SW6FW1850 50x32FW1850 58x40FW1850 58x56FW1850 5555656881027323238280store.milacron.com
Two-Stage EjectorsAssembly FW1850Two-stage single-stroke ejectorEjector plate assembly IIEjector plate assembly IClamping plateFeatures: Secured position of the ejector plates due to builtin-low-wear interlocks. Infinitely variable strokes High operational reliability of the ejectorcomponents due to forcedcontrolled stroke actions Simplified operations of angled and rotating moldejection components. Space-saving installation in the ejector bolt area. The tool height remains unchanged.store.milacron.comSupport plateDesign considerations:A detachable fixed connection between ejector bolt (FW1850) and the machine ejector is necessary, preferablyusing the pneumatic rapid-action coupling PN 1680.The ejector plates cannot be pushed by return pins dueto the tool closing movement! Ejector plate guidanceby four guides in the ejector plates to prevent tilting. Astroke limitation is preferable to keep the ejector platesseparate in the end position. Centre misalignmentcompensation between machine ejector and toolpreferably by pneumatic rapid-action coupling PN 1680.Adapter for tool on MAP will be made, as necessary,preferably from centering flange R 19.281
Two-Stage EjectorsTSTL2-stage Ejector Top LastPositive, precise plate control:DME 2-stage Ejectors (TS) adapt to a number of mold base sizez and plate thicknesses. They are available in two ejection sequences: Top Last (TS) and BottomLast (BS). Each ejection sequence is available in three sizes to accommodatemost standard DME mold bases. The stroke range for each ejection stage isdetermined and fixed by the customer by cutting the Center Rod to the desiredlength (both TSTL and TSBL types) and by also cutting the Travel Sleeve to thedesired length (TSBL type only). Once installed, the DME 2-stage Ejector assurespositive, precise control of the sequence and distance of each stroke of the twoejector plates. Once installed, there are no adjustments that can be accidentallychanged.Benefits:Both the first stage and second stage strokes are set independently. Easy set-upand installation. Fixed strokes cannot be tampered with or accidentally modified.Internal installation avoids interferences with water line connectors and externally mounted components. Utilizes latching mechanism similar to DME InternalLatch lock for smooth operation and guidance. Three sizes, for each style, to choose from to accomadate most standard DME moldbases. Hardened steel components for long life. DME 2-stage Ejectors are considerably more compact and may be centrally located,the preferred method for locating DME 2-stage Ejetors is in pairs, offset from mold center. For more details, assembly guidelines seewww.dme.net.Selection and design guidelines:Select 20 mm Ø (small), 26 mm Ø (medium), or 23 mm Ø (large) 2-Stage Ejector based on the width of the mold base (large molds,thick plates or heavy load applications may require the next size assembly). Determine the travel range for each ejection stroke(first and second), being very careful not to exceed the maximum stroke specified for the chosen 2-Stage Ejector style and size.this selection is based on the specific application. In general, a minimum of two 2-stage Ejectors are required. For larger molds,thick plates, or a application where loads are near maximum, additional assemblies and/or larger assemblies may be required. Anapplication must never exceed the maximum recommended laod values. A balanced load must be maintained to avoid cockingand binding which could cause severe overloading. Only one size of 2-stage Ejectors should be used in each mold base.H1-Stroke 1H2-Stroke 2Basic centerrod diaMin.Max.Min.Max.TSTL 20 A20mm479479TSTL 26 A26mm684684TSTL 32 A32mm892892REFMax. moldbase widthMax.loadvalues staticMax.loadvalues dynamicUp to 196mm, 1 TSTL 20600 kg, 5,8 kNUp to 446mm, 2 TSTL 20Up to 446mm, 1 TSTL 266100 kg, 10,8 kNUp to 596mm, 2 TSTL 26Up to 596mm, 1 TSTL 322000 kg, 19,6 kNUp to 796mm, 2 TSTL 3260 kg, 0,58 kN110 kg, 1,08 kN200 kg, 1,96 kNAssembly & installation guidelinesThe moldmaker is responible to cut and/or grind the Center Rodto the required length prior to installation of the 2-Stage Ejectorassembly into the mold base. Do not cut off more than the minimum stroke (H2). The recommended tolerance on the CenterRod length after the customer has cut the Center Rod is 0/-0,02mm or less. Stroke 1 (H1) is reduced by cutting and/or grindingthe moving plates end of both the Center Rod. Stroke 2 (H2) isreduced by cutting and/or grinding the stationary platen end ofthe Center Rod. Minimum H2 specified in chart does not includeadditional stop pins to stationary-side spacer plate. To reduceH2 even further than what is specified in chart, add stop pins.All 2-stage Ejectors in a mold must be cut to the same strokes.It is recommended that guided ejection be used. Ejector speedmust be controlled, ensuring that excessive shock loading doesnot occur. 2-Stage Ejectors are not suitable for sever laod conditions. 2-Stage Ejectors must not be exposed to temperaturesthat exceed 150 C at any time. Lubricate all metal-to-metal contact areas initially and periodically as required. A good grade ofmoldmakers non-melting type grease for the appropriate temperature should be used.REFTSTL 20 ATSTL 26 ATSTL 32 A282Center rod length262,96285,32316,68Stroke 1Stroke 9,80store.milacron.com
Two-Stage EjectorsTSTLAfter a predetermined amount of travel,the latch mechanism latches onto theCenter Rod, thereby fixing the position of the bottom (moving platen side)ejector plate assembly.store.milacron.comThe top (stationary platen side) ejector plate assembly continues to movethrough the “second” or remainingstroke until the top ejector plate assembly contacts the top of the ejector boxhousing.283
Two-Stage EjectorsTSTLCRCenter rodREFD1D2D17L1*L2L3L22**C1R1TSTL 20 CRTSTL 26 CRTSTL 32 CR33425320 0 -0,0126 0 -0,0132 0 -0,0156626529032010121518,7422,9328,2572 0,5 076 0,5 082 0,5 01,522,50,40,80,8* Cutoff on both ends of center pin only per installation data.** Final length must have tolerance of 0/-0,2mm after moldmaker has cut the center pin to the desired 00,50,50,5CAD reference pointTSTL 20 TSTSTL 26 TSTSTL 32 TSTravel Sleeve284store.milacron.com
Two-Stage EjectorsTSTLBDD19Body For Cam FingersREFTSTL 20 BDTSTL 26 BDTSTL 32 8,210,23037470,50,50,6TSTLKTCam Finger Replacement Kit (with 6 cam fingers, and 8 locking pins)6 cam fingersL78 locking pinsBlind slot forlocking pinREFTSTL 20 KTTSTL 26 KTTSTL 32 KTstore.milacron.com285
Two-Stage EjectorsTSBL2-stage Ejector Bottom LastStroke 1Stroke 2Basic center roddiaMin.Max.Min.Max.TSBL 20 A20mm8821282TSBL 26 A26mm10921892TSBL 32 A32mm1210224102REFStroke 2 (H2)Stroke 1 (H1)Support plateCenter rod length (to be cut by moldmaker)Stationary platen sideClamping plateMoving platen sideREFTSBL 20 ATSBL 26 ATSBL 32 A286Center rodlength262,96285,32316,68H1-Stroke 1H2-Stroke base widthMax.loadvalues staticMax.loadvalues dynamicUp to 196mm, 1 TSTL 20600 kg5,8 kN60 kg0,58 kN1100 kg10,8 kN110 kg08 kN2000 kg19,6 kN200 kg1,96 kNUp to 446mm, 2 TSTL 20Up to 446mm, 1 TSTL 26Up to 596mm, 2 TSTL 26Up to 596mm, 1 TSTL 32Up to 796mm, 2 TSTL 32Assembly & installation guidelines: All 2-Stage Ejectors in a mold must be cut to the same strokes. It is recommended that guided ejection be used. Ejector speed must be controlled, ensuring that excessiveshock loading does not occur. 2-Stage Ejectors are not suitable for severe load conditions. 2-Stage Ejectors must not be exposed to temperatures thatexceed 150 C (300 F) at any time. Lubricate all metal-to-metal contact areas initially and periodically as required. A good grade of moldmakers non-meltingtype grease for the appropriate temperature should be used. A minimum of (4) Puller Pins should be used with each mold.Larger molds may require additional Puller Pins. The moldmaker must cut and/or grind the Puller Pins to therequired length. Puller Pins are not included with Bottom Last Assemblies andmust be ordered separately. At end of second stroke, Body forCam Fingers must seat firmly against Center Rod head or spacer plate. The moldmaker must cut and/or grind the Center Rod to therequired length prior to installation of the 2-Stage Ejectorassembly into the mold base. Do not cut off more than the minimum stroke (H2). The recommended tolerance on the CenterRod length after the customer has cut the Center Rod is 0/0.02mm or less. The moldmaker must cut and/or grind the Travel Sleeve tothe required length prior to installation of the 2-Stage Ejectorassembly into the mold base. Do not cut off more than the minimum stroke (H2). Stroke 1 (H1) is reduced by adding stop buttons to the stationary platen side spacer plate in order to restrict motion of the top(stationary platen side) ejector plate assembly. The moldmakermust manufacture a suitable set of stop buttons that are of therequired height to achieve the desired stroke (H1). Stroke 2 (H2) is reduced by cutting and/or grinding the movingplaten end of both the Center Rod and the Travel 10121012144910store.milacron.comCAD reference pointAt end of second stroke, body for cam fingers must seatfirmly against center rod head or spacer plate as shown. Tolerances depicted here are installation tolerances. See component detail drawings for specific componenttolerances Refer to applicable charts for nominal dimension
Two-Stage EjectorsTSBL1 Ejector Plates Back2 First Ejector Stroke3 Second Ejector StrokeAfter a predetermined amount of travel,the latch mechanism latches onto theCenter Rod, thereby fixing the positionof the bottom (moving platen side) ejector plate assembly.The top (stationary platen side) ejector plateassembly continues to move through the“second” or remaining stroke until the topejector plate assembly contacts the top of theejector box housing.store.milacron.com287
Two-Stage EjectorsTSBLCRREFTSBL 20 CRTSBL 26 CRTSBL 32 CRCenter 010-0,017,28,510,5L1*280314354L2 0,50 0,50 0,50101214 0,020 0,020 0,020L3C193,66105,67118,181,01,01,5* Cutoff on both ends of center pin only per installation data.** Final length must have tolerance of 0/-0,2mm after moldmaker has cut the center pin to the desired length.TSBLTSREFTSBL 20 TSTSBL 26 TSTSBL 32 TS288Travel SleeveD84354680-0,030-0,030-0,03D9344354L108694105 0,20 0,20 com
Two-Stage EjectorsTSBLLRØ D13 (Bold diameter)Locking RingREFTSBL 20 LRTSBL 26 LRTSBL 32 613,716,86,48,610,810,013,016,06,08,110,1M43,2 x 1,25M54,2 x 1,25M68,25 x 1,5TSBLBDBody For Cam FingersREFD4D5D6D7L5L6L7C2R1TSBL 20 BDTSBL 26 22,76,06,00,30,40,40,4TSBL 32 n.com289
Two-Stage EjectorsTSBLKTCam Finger Replacement Kit (with 6 cam fingers, and 8 locking pins)6 cam fingers8 locking pinsBlind slot forlocking pinREFTSBL 20 KTTSBL 26 KTTSBL 32 KTTSBLPPREFTSBL 20 PPTSBL 26 PPTSBL 32 PP290Puller com
Latch lock for smooth operation and guidance. Three sizes, for each style, to choose from to accomadate most standard DME mold bases. Hardened steel components for long life. DME 2-stage Ejectors are considerably more compact and may be centrally located, the preferred method for locating DME 2-stage Ejetors is in pairs, offset from mold center .
