Herzog NE Quick guide

NE-Nozzle, Installation and service instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[email protected] 1 M. S. Version 0.2
Application:
Elastomeric plastics (including L.S.R. - Liquid Silicone Rubber)
Shut-off technique:
Needle shut-off with integrated pneumatic actuator
Chapter Page
Safety instructions...................................................................................................... 2
Initial operation........................................................................................................... 3
Cleaning instructions.................................................................................................. 3
Assembly.................................................................................................................... 4
Spare part order form................................................................................................. 5
Index of contents

NE-Nozzle, Installation and service instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[email protected] 2 M. S. Version 0.2
Please pay attention to the following safety instructions and precautions
This symbol indicates explanations about important matters.
Failure to read these or false handling could result in injury or damage.
Handling
 Installation and servicing to be only carried out by suitable personnel according to
the installation and service instructions.
 Nozzle can become extremely hot. Full face protection and heat resistant gloves
must be worn.
Damage precaution
 Do not drop the nozzle or exert it to unnecessary forces.
 Take care that no foreign bodies enter the working parts of the nozzle.
 No adjustment or manipulation when nozzle is in operation.
 Never heat steel / aluminium parts over 110°C.
 Nozzle is only to be used for elastomer injection molding purposes.
Operational notes
 Maximum injection rate / temperature: 3000 bar at -20°C to 110°C.
 Torques on screws and threaded parts must be adhered to.
 Noise emissions from the nozzle do not exceed 70 dB(A).
Explosion danger
 Some plastics produce gases if they stay for a longer time in a heated environment.
There is a risk that the gas may escape explosively through the nozzle orifice.
Keep this manual in a convenient place for future reference.
Safety instructions

NE-Nozzle, Installation and service instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[email protected] 3 M. S. Version 0.2
Read safety instructions!
Actuation:
Operating data according to engraving on nozzle
Leakage:
Between needle and guide there is a melt film which prevents the needle from blocking.
Melt film will be continuously renewed and eventually leaks out of nozzle.
Retightening the screws:
After approx. 1000 shots, check all screw torques (see Assembly) and retighten when
necessary.
At machine downtimes do not shut-off the nozzle tempering system. If a longer period of
inactivity is forecast, the nozzle should be completely flushed clean.
Initial operation
Cleaning instructions
Dismantle nozzle acc. to instructions and clean individual parts with kerosine.
Finally rinse all parts with a grease removal substance. Hardened material can be
removed by hand.
Never heat nozzle above 110°C!
Help tools for cleaning:
 Petrol
 Kerosine
Before reassembly check all parts for damage or wear.
Profit from our cleaning service. The nozzle is disassembled, checked and repaired
if necessary after customer approval.

NE-Nozzle, Installation and service instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[email protected] 4 M. S. Version 0.2
Assembly
Pos. Description Tool size (torque)
1 Body 4 x connections: 2 x G1/4 for actuator (pneumatic 4-10bar), 2 x G1/4 for tempering (max. 110°C)
2 Seal insert with seals -
3 Seal ring ø13 -
4 Seal ring ø11 -
5 Piston o-ring ø33 -
6 Piston seal ring ø42 (outside ø) -
7 Needle -
8 Seal insert with seals -
9 O-ring ø38 -
10 Adapter SW50 (torque according to machine handbook)
11 Flange screws SW8 (tighten crosswise in several passes - 15Nm)
12 O-ring ø55 -
13 O-ring ø55 -
14 O-ring ø30 -
15 O-ring ø27 -
16 Tip base -
17 Tip flange -
18 Cylinder screws SW5 (tighten crosswise in several passes - 12Nm)
19 O-ring ø26 -
20 Cooling cover -
21 Tip cap SW27 (120Nm)
Assembly note:
A B
Read safety and cleaning instructions!
Assemble according to numerical order. Disassemble in opposite order.

NE-Nozzle, Installation and service instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[email protected] 5 M. S. Version 0.2
Spare part order form
Your contact information:
Company
Street
City / Zip
Contact
Tel. / Fax
E-Mail
Engraved nozzle identity no.: please insert here
Quantity Part (for part name, see Assembly)
Send to:
herzog systems ag
CH-9230 Flawil / Switzerland
Tel. [phone] / Fax [phone]
www.herzog-ag.com / [email protected]