Post on 30-Apr-2020
SR24 Hot Runner Nozzles arefor large part applicationsand are available with band,helical and tubular heaters.One band heater is requiredfor operation but an installedspare may be provided ifspace allows. They areavailable in lengths from 120to 900 (“J” dimension).Designed for high flow thesenozzles are available withCV10, CV20 full flow andvalve gate tips only.
Suitable for all materials andavailable with six SynventiveControlled Vestige (CV) tipoptions including valve gatesfor zero gate vestige applica-tions.
SR24-1
SR24 SeriesFeatures
J
Ø13-25
Threaded Tips
Thermocouple
Heat Pipes
ReplaceableHeaters
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All Dimensions in mm
SR24-2
SR24 SeriesHeater Options
155 spare heater installed
Ø 65
120
J
20 wide x 36 deepwire slot
90 single heater
Ø 95 x 12 deep
H6Ø 6
22
H6
53
Ø 114
Ø13-25
One heater required for operation.If mold thickness allows a spareband heater will be installed.
J Minimum = 120J Maximum = 380
H6
Ø 88
Ø 76
wire slot20 wide x 36 deep
Ø 114
J
For J 175-300, Ø88
For J 300-625, Ø88
Ø13-25
not required
X J/2 deep
x 12 deep
H6Ø 6
22
53
120
Band Heater
Helical HeaterWhen J is greater than 300 twoheaters are required for opera-tion.
J Minimum = 175J Maximum = 625
SR24-3
SR24 SeriesHeater Options
H6
120
Ø 75
Ø 114
J
Ø 6x 12 deep
H6
22
53
Dowels shown 90out of true location
100
76 DeepX 50 wide
Ø13-25
Each nozzle requires 2 heaterswired in parallel to create onezone.
J Minimum = 220J Maximum = 900
Tubular Heater
SR24-4
SR24 SeriesOverview
Thermal GateNozzle
See page SR24-5 toselect a tip that suitsyour application
CV10- Filled and unfilled materials- Open flow channel/higher flow- 3.0 to 8.0 orifice diameter- Patented seal- Easier mold geometryDimensional data on Pages SR24-9 & 10
Valve GateNozzle
CV20- Filled and unfilled materials- Open flow channel/higher flow- 3.0 to 8.0 orifice diameter- Patented seal- No witness mark- Easier color changeDimensional data on Pages SR24-11, 12 & 13
VG12- Filled and unfilled materials- “0” vestige- Tapered shut off- 6.4 orifice diameter- Patented seal- Easier mold geometryDimensional data on Pages SR24-14 & 15
VG12S- Filled and unfilled materials- “0” vestige- Diametric shut off- Materials having glass fiber fillers- 8.0 orifice diameter- Patented seal- Easier mold geometryDimensional data on Pages SR24-16 & 17
VG23- Filled and unfilled materials- “0” Vestige- Tapered shut off- 6.4 orifice diameter- Patented seal- No witness markDimensional data on Pages SR24-18 & 19
VG23S- Filled and unfilled materials- Materials having glass fibers- Diametric shut off- “0” Vestige- 8.0 orifice diameter- Patented seal- No witness markDimensional data on Pages SR24-20 & 21
SR24-5
SR24 SeriesMaterial Compatibility
PE PP PEEK
PPS
PET
PBT
PPO
/PA
PA PPA
POM
PMM
A
ABS
ASA
SAN
PS PC/A
BS
PC PES
PSU
PEI
PPO
TPE
Add
itiv
es
Semi-crystalline Amorphous
A
B
C
D
Material
Tip Style
+ + - - - - - - - - + + + + + + + - - - + -
-++ ----- --+--- --++- -+-
-++ ++-+- --+-+- --++- -+-
-++ ----- --+--- --++- -+-
A
B
C
D
+ + - - - - - - - 0 - - - + -+ + + + + + +
------++ 0 +++-+++ -- -+--
--+---++ 0 +++--+- -- -+--
+-+ + ++ + + --- +0 - -+ + + - - + -
The above table defines which tipstyles are best suited for a givenmaterial.
Note:The selection table is meantto be a guide for the initialselection of the tip style. It isbased on the more commongrades of material.Synventive will verify thecorrect tip selection as partof the quote/order process.
Additive IndexA - NoneB - FillersC - Glass FiberD - Flame retardants
+ Very suitable0 Suitable- Not suitable
CV10
CV20
A
B
C
D
+ + - - + + + + + + + + - - -
- ----- ----- --- -
-00 0-00- 00- --00 -
+++ ++
- - - --
---- - - - - - - -- - -- - - - --
00 00
--
+ 0
+
-
+
-VG12
A
B
C
D
-++ 0000- -+- --++ 0+--+ ++
+-++ + ++- + + +++ -++++ +-- 0
---- - - - - - - -- - -- - - - -- - -
--- - ---- -- --- ---- - -- - -
A
B
C
D
+ + - - + + + + + + + + - - - + +
- ----- ----- --- --
-++ 0000- 00- --++ ++-
+++ ++
- - - -- -
---- - - - - - - -- - -- - - - -- - -
0+ +0
A
B
C
D
-++ +0++- 00- --++ 0+--+ +0
+-++ + ++- + + +++ -++++ +-- 0
---- - - - - - - -- - -- - - - -- - -
--- - ---- -- --- ---- - -- - -
VG12S
VG23S
VG23
SR24-6
SR24 SeriesFlow Rate
Maximum flow rate of hot runnernozzles varies depending on themelt index of the material beingprocessed.
The flow rate of any hot runnernozzle is controlled by threefactors:
1) Flow bore size
2) Melt temperature, viscosity vs shear rate relationship.
3) The cavity wall thickness, flow length from the gate, mold temperature and required fill rate.
The last two factors can combineto change the maximum shotcapacity by a factor of 5 or more.Synventive uses computerizedflow analysis to assure thecorrect nozzle is chosen.
Example
Material: PE
Tip style: CV10
Maximum flow rate: 2000 grams/second
Note:Values in the table do notinclude reinforced materialsor materials with fillers.
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02VC/01VC )S(32GV/)S(21GV
SBA ces/mg0051 ces/mg008
CP ces/mg055 ces/mg571
OPP ces/mg057 ces/mg571
TBP ces/mg057 ces/mg571
CP/TBP ces/mg005 ces/mg571
SBA/CP ces/mg055 ces/mg571
SP ces/mg0002 ces/mg009
PP ces/mg0052 ces/mg009
AP ces/mg0051 ces/mg007
MOP ces/mg056 ces/mg053
EP ces/mg0002 ces/mg009
cilyrcA ces/mg0021 ces/mg054
CVP ces/mg056 ces/mg053
RPT - ces/mg009
SR24-7
SR24 SeriesOrifice Guidelines
This table lists the normal gateorifice required to fill an averagecavity of the listed wall thicknessand surface area.
The orifice diameter is based onthe flow and freeze characteris-tics of each type of plastic at itsnormal processing conditions. It isnot dependent on whether thecavity is fed by a hot or coldrunner.
Some of the listed wall thicknessand surface area combinations arenot applicable to all plasticsbecause of the flow length to wallratios of each material. Consultplastic supplier’s processingrecommendations.
Due to the gate limitations of eachhot runner nozzle, the actual gatemay be slightly smaller or largerthan the tabulated orifice.
Material FactorsUse tabulated orifice for PE, PP, PS,SAN and PUR.
Use tabulated orifice x 1.15 for POM,PC, PPO and ABS.
Use tabulated orifice x 1.30 for Acrylic,PA, PET, and PBT
Use tabulated orifice x 1.50 for PVC.
For non-reinforced PA, PET and PBT theminimum orifice diameter should be3.00. For reinforced PA, PET and PBTthe minimum orifice diameter shouldbe 3.96.
Part Area is total outside area and notthe projected area of the part.
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0.1 530.0 530.0 530.0 530.0 530.0 530.0 730.0 930.0 440.0 050.0
0021 09.0 09.0 09.0 29.0 00.1 50.1 21.1 71.1 23.1 05.1
0.2 530.0 530.0 530.0 630.0 930.0 140.0 440.0 640.0 250.0 950.0
0081 09.0 09.0 59.0 20.1 01.1 71.1 52.1 03.1 74.1 86.1
0.3 530.0 530.0 730.0 040.0 340.0 640.0 940.0 150.0 850.0 660.0
0042 09.0 09.0 20.1 01.1 02.1 52.1 53.1 04.1 85.1 87.1
0.4 530.0 530.0 040.0 340.0 740.0 940.0 350.0 550.0 260.0 070.0
0003 09.0 59.0 70.1 71.1 52.1 23.1 24.1 74.1 56.1 88.1
0.5 530.0 730.0 240.0 640.0 940.0 250.0 650.0 850.0 560.0 470.0
0006 00.1 21.1 72.1 73.1 05.1 85.1 86.1 67.1 89.1 62.2
0.01 830.0 440.0 050.0 450.0 950.0 260.0 660.0 960.0 870.0 980.0
000,21 71.1 23.1 35.1 56.1 87.1 88.1 )00.2 80.2 63.2 76.2
0.02 640.0 250.0 060.0 560.0 070.0 470.0 970.0 280.0 390.0 501.0
000,81 03.1 74.1 86.1 38.1 69.1 60.2 12.2 13.2 26.2 79.2
0.03 150.0 850.0 660.0 270.0 770.0 180.0 780.0 190.0 301.0 711.0
000,42 73.1 85.1 08.1 69.1 01.2 42.2 93.2 94.2 08.2 81.3
0.04 450.0 260.0 170.0 770.0 380.0 880.0 490.0 890.0 011.0 521.0
000,03 54.1 56.1 09.1 60.2 42.2 63.2 15.2 46.2 59.2 53.3
0.05 750.0 560.0 570.0 180.0 880.0 390.0 990.0 401.0 611.0 231.0
000,63 35.1 37.1 89.1 61.2 43.2 64.2 46.2 77.2 01.3 35.3
0.06 060.0 860.0 870.0 580.0 290.0 790.0 401.0 901.0 221.0 931.0
000,24 85.1 08.1 80.2 62.2 14.2 75.2 57.2 78.2 32.3 66.3
0.07 260.0 170.0 280.0 980.0 590.0 101.0 801.0 311.0 721.0 441.0
000,84 56.1 88.1 31.2 43.2 15.2 46.2 28.2 79.2 33.3 97.3
0.08 560.0 470.0 480.0 290.0 990.0 401.0 111.0 711.0 131.0 941.0
000,45 07.1 39.1 12.2 93.2 06.2 27.2 29.2 50.3 34.3 98.3
0.09 760.0 670.0 780.0 490.0 201.0 701.0 511.0 021.0 531.0 351.0
000,06 37.1 89.1 62.2 64.2 46.2 08.2 00.3 21.3 35.3 99.3
0.001 860.0 870.0 980.0 790.0 401.0 011.0 811.0 321.0 931.0 751.0
000,09 39.1 81.2 15.2 27.2 29.2 01.3 03.3 54.3 98.3 24.4
0.021 670.0 680.0 990.0 701.0 511.0 221.0 031.0 631.0 351.0 471.0
000,021 - 63.2 07.2 29.2 01.3 33.3 65.3 37.3 02.4 57.4
0.002 - 390.0 601.0 511.0 421.0 131.0 551.0 741.0 561.0 781.
000,081 - - 79.2 32.3 84.3 86.3 49.3 51.4 26.4 62.5
0.003 - - 711.0 721.0 731.0 541.0 551.0 261.0 281.0 702.0
000,042 - - - 84.3 67.3 89.3 22.4 24.4 89.4 45.5
0.004 - - - 731.0 841. 651.0 661.0 471.0 691.0 812.0
SR24-8
SR24 SeriesManifold Integration
Preload cold
J
T
65
Thrust PadTCP
H6
Metal O-ring
Ø16
Center Locator
6
Railheight
SR24 hot runner systems aredesigned with a preload betweenthe thrust pads and the mold platesin the cold condition. As themanifold heats an additional sealingforce is created.
The thrust pads are made of a lowconductivity material and shouldonly be replaced with an equivalentSynventive part.
Excessive contact with the mold willcause heat sinks and affect thesystem performance. Contact withthe mold must be limited tospecified areas.
T = Rail height - 6 - 65 (manifold)
Minimum T = 10
Minimum rail height = 81 .
Support ring nozzles do not line upwith the sub-runners in the manifoldin the cold condition. As themanifold heats up the manifold sub-runner locations expand to thecorrect location.
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SR24-9
SR24 SeriesManifold Nozzle
6 ContactØ3-8
Ø32H6
4
25 Ref
12030
34 Band heater (shown)37.2 Helical heater36.8 Tubular Heater
6
J
3Land
Filled and unfilled materials.
Easy orifice size changes bystraight reaming
Open flow bore
Heat pipes for isothermaloperation.
The front face of the tip must bein contact with plastic.
Cooling is required in the gatearea.
SR24 CV10
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SR24 SeriesCV10 Angled Mold Contour & Recess
Angled Mold Contour
Extension
L
3 Land
K
contact3 Min
1.6 Min
E = 16TAN
L = 3 + K - TAN
E = K + 16TAN
L = 3 - TAN
14°; K= 5.7TAN + - 3
2Orifice Dia.Orifice Dia.
2
COS1.614°; K= 0
When gating on an angled moldcontour the vestige height may beincreased depending on the angle.
K is the increase in vestige heightrequired to maintain 1.6 minimumwall thickness and/or 3 minimumcontact.
orifice2
orifice2
Orifice
3.0 +
Recessed gates are used to reducethe vestige height above the partsurface or keep the vestige belowthe part surface.
For most materials CV10 vestigeheight is equal to 3.0 + orifice/2.
Values in tables are for materialsnot having glass fibers. ConsultSynventive for vestige heightwhen using glass fillers.
Dimple diaD
3 Mincontact
R30hRecess
Spherical RecessD = 2 h(60-h)h Max = 6
Land3
SR24-10
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h D
0.3 2.62
5.3 1.82
0.4 9.92
5.4 6.13
0.5 0.23
5.5 0.23
0.6 0.23
SR24-11
SR24 SeriesManifold Nozzle
Ø3-8
Ø32H6
5
25 Ref
12060
34 Band heater (shown)37.2 Helical heater36.8 Tubular Heater
Ø11.4
Ø16.9
6
J
12.3
45
3Land
6.9
Filled and unfilled materials.
Easy orifice size changes bystraight reaming .
No tip witness mark on part.
Open flow bore.
Heat pipes for isothermaloperation.
Cooling is required in the gatearea.
SR24 CV20
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SR24-12
SR24 SeriesCV20 Recess
Conical Recess
hRecess
DDimple dia
Ø17
30
D = 17 + 3.5(h)h Max = 6
Land3
Recessed gates are used to reducevestige height above the partsurface or keep the vestige belowthe part surface.
For most materials CV20 vestigeheight is equal to 3.0 + orifice/2.
orifice2
3.0 + orifice2
Orifice
Values in tables are for materialsnot having glass fibers. ConsultSynventive for vestige heightwhen using glass fillers.
Dimple dia Land3
R30
D
Recessh
D = 2 h(60-h)h Max = 6
Spherical Recess
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h D
0.3 5.72
5.3 3.92
0.4 0.13
5.4 8.23
0.5 5.43
5.5 3.63
0.6 0.83
sseceRlacirehpS
h D
0.3 2.62
5.3 1.82
0.4 9.92
5.4 6.13
0.5 2.33
5.5 6.43
0.6 0.63
SR24-13
SR24 SeriesCV20 Angled Mold Contour
Angled Mold Contour
L
3 Land
K
1.6 Min
L = 2 + K - TANL = 2 - TAN2
Orifice Dia.Orifice Dia.2
COS1.38°; K= 0 8°; K= 4.75TAN + - 3
When gating onto an angled moldcontour, the vestige height may beincreased depending on the angle.
K is the increase in vestige heightrequired to maintain 1.6 minimumwall thickness.
SR24-14
SR24 SeriesManifold Nozzle
6 Contact
Ø32H6
4
25 Ref
12030
34 Band heater (shown)37.2 Helical heater36.8 Tubular Heater
Ø6.40.13
Pin protrusionR0.13
Ø8
15
3 Land
6
J
Filled and unfilled materials.
Heat pipes for isothermaloperation.
Tapered valve pin to eliminategate flash.
The front face of the tip must bein contact with plastic.
Cooling is required in the gatearea.
SR24 VG12 Tapered
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SR24-15
SR24 SeriesVG12 Angled Mold Contour
3 Land
K
1.6 Min
Extension
3 Min
R0.13Ø6.4
Pin protrusion0.13
30
E = K + 16TAN
11°; K= 0
E = 16TAN
COS1.6
Angled Mold Contour
11°; K= 5.7TAN + - 3
When gating on an angled moldcontour the orifice land may beincreased depending on the angle.
K is the increase in land required tomaintain 1.6 minimum wall thick-ness and/or 3 minimum contact.
SR24-16
SR24 SeriesManifold Nozzle
6 Contact
Ø32H6
4
25 Ref
12030
34 Band heater (shown)37.2 Helical heater36.8 Tubular Heater
Ø8.0030.13
Pin protrusion
R0.13
30
3 Land
6
J
0.4
Ø8.013
Filled and unfilled materials.
Heat pipes for isothermaloperation.
Straight valve pin in gate for non-adjustable actuators and glassfilled materials.
The front face of the tip must bein contact with plastic.
Cooling is required in the gatearea.
SR24 VG12S Straight
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SR24-17
SR24 SeriesVG12S Angled Mold Contour
3 Land
KExtension
3 mincontact
R0.13
0.4
Ø8.013Ø8.003
Pin protrusion0.13
30
COS11°; K= 5.7TAN + - 3
E = 16TAN
11°; K= 0
E = K + 16TAN
1.6 Min
Angled Mold Contour
1.6
When gating on an angled moldcontour the orifice land may beincreased depending on the angle.
K is the increase in land required tomaintain 1.6 minimum wall thick-ness and/or 3 minimum contact.
SR24-18
SR24 SeriesManifold Nozzle
Ø32H6
5
25 Ref
9060
34 Band heater (shown)37.2 Helical heater36.8 Tubular Heater
120
6.9
12.3
Ø11.4
Ø16.9
Ø8
15
Pin protrusion0.13
R0.13
Ø6.4
3 Land
6
J
R1.5 typ.
Filled and unfilled materials.
No tip witness mark on part.
Heat pipes for isothermaloperation.
Tapered valve pin to eliminategate flash.
Cooling is required in the gatearea.
SR24 VG23 Tapered
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SR24-19
SR24 SeriesVG23 Angled Mold Contour
3 Land
K
1.6 Min
30
R0.13Ø6.4
Pin protrusion0.13
COS
Angled Mold Contour11°; K= 0 11°; K= 5.7TAN + - 31.6
When gating on an angled moldcontour the orifice land may beincreased depending on the angle.
K is the increase in land required tomaintain 1.6 minimum wall thick-ness.
SR24-20
SR24 SeriesManifold Nozzle
Ø32H6
5
25 Ref
9060
34 Band heater (shown)37.2 Helical heater36.8 Tubular Heater
120
6.9
12.3
Ø11.4
Ø16.9
30
Pin protrusion0.13
R0.13
Ø8.003
3 Land
6
J
Ø8.0130.4
R1.5typ
Filled and unfilled materials.
No tip witness mark on part.
Heat pipes for isothermaloperation.
Straight valve pin in gate for non-adjustable actuators and glassfilled materials.
Cooling is required in the gatearea.
SR24 VG23SStraight
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SR24-21
SR24 SeriesVG23S Angled Mold Contour
3 Land
K
1.6 Min
R0.13Ø8.013Ø8.003
Pin protrusion0.13
30
0.4
11°; K= 5.7TAN + - 311°; K= 0 1.6COS
Angled Mold Contour
When gating on an angled moldcontour the orifice land may beincreased depending on the angle.
K is the increase in land required tomaintain 1.6 minimum wall thick-ness.