Herzog BHP Installation and maintenance instructions

BHP-Nozzle, Installation & Service Instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[e-mail] 1 M. S. Version 0.3
Machine bolt shut-off nozzle type BHP
pneumatically or hydraulically controlled
Applications:
Thermoplastics, shear sensitive materials,
parts with long cavities (reduced pressure loss)
Shut-off mechanism:
Bolt shut-off with integrated 2-way actuator
pneumatically or hydraulically operated
Index of contents
Chapter Page
Safety instructions ................................................................................................. 2
Initial operation...................................................................................................... 3
Cleaning instructions.............................................................................................. 3
Assembly .............................................................................................................. 4
Parts subject to wear / ordering spareparts............................................................ 5

BHP-Nozzle, Installation & Service Instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[e-mail] 2 M. S. Version 0.3
Please pay attention to the following safety instructions and precautions
Safety instructions
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 parts over 520°C.
• The actuator is designed for temperatures up to 180°C.
• Nozzle is only to be used for injection molding purposes.
Operational notes
• Maximum injection rate / temperature: 3000 bar at 400°C.
• Torques on screws and threaded parts must be adhered to.
• Noise emisions 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 throughthe nozzle orifice.
Keep this manual in a convenient place for future reference.

BHP-Nozzle, Installation & Service Instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[e-mail] 3 M. S. Version 0.3
Read safety instructions!
Initial operation:
1. Bring nozzle to operating temperature
2. Only by first initial operation: tighten screws and heater band screws to the maxi-
mum recommended torques
3. Make sure that the Polymer is completely melted
4. Eject the heated material. This follows after extrusion at low speed (time ca. 25 - 30
S) or through injecting out at three to five times the rate of injection
Actuator:
Operational data according to engraving on cylinder
Leakage:
Between bolt and guide there is a melt film which prevents the needle from blocking. The
melt film will be continuously renewed and will eventually leak out of the nozzle.
At machine downtimes: nozzle temperature must be lowered.
Initial operation
Cleaning instructions
While the nozzle is still installed, clean as far as possible in a heated state and finally
disassemble completely and clean individual parts.
Plastics such as; LCP or PPS burn away when the nozzle is heated in an oven for tow
hours at 500°C.
Never heat steel parts above 500°C!
Clean pneumatic or hydraulic actuator separately with max. 150°C!
Avoid kinking the heater bandand sensor cables!
Help tools for cleaning:
• Sand fluidized bed
• Glass bead blasting
• Cleaning oven
• Gas burner
• Wire brush
• Steel wool
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.

BHP-Nozzle, Installation & Service Instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[e-mail] 4 M. S. Version 0.3
Order Qty. Description Tool size (torque)
BHP0 BHP1
1 1 Body Counter SW50 Counter SW50
2 1 Insert - -
3 1 Locking screw SW14 (30 Nm) SW19 (80 Nm)
4 1 Shut-off bolt - -
5 1 Stop screw SW10 (30 Nm) SW12 (80 Nm)
6 1 Lever unit Manually Manually
7 1 Bracket - right - -
8 1 Bracket - left - -
9 4 Screw SW4 (5 Nm) SW4 (5 Nm)
10 1 Actuator - -
11 2 Bolt screw SW13 (12 Nm) SW17 (30 Nm)
12 1 Bolt - -
13 1 Spring clip - -
14 1 Adapter SW36 (Machine handbook) SW50/60 (Machine handbook)
15 8 Flange screw SW8 (15 Nm) SW6 (40 Nm)
16 1 Tip SW32 (150 Nm) = M30*2 Ø8 SW32 (150 Nm) = M30*2 Ø8
17 1 Heater band - -
18 2 Heater band screw SW4 (Hand-tight) SW4 (Hand-tight)
19 1 Temperature sensor SW14 (Hand-tight) SW14 (Hand-tight)
BHP2
Counter SW90
-
SW24 (340 Nm)
-
SW19 (340 Nm)
Manually
-
-
SW6 (35 Nm)
-
SW22 (80 Nm)
-
-
SW65(Machine handbook)
SW8 (80 Nm)
SW46 (400 Nm) = M45*3 Ø19
-
SW4 (Hand-tight)
SW14 (Hand-tight)
Read safety and cleaning instructions!
Assembly / Disassembly Notes:
Lever unit (pos. 6) should not be disassembled in normal circumstances.
Pull out pos. 2 from above using a screw. If required, use the bolt (pos. 4) and a soft punch to carefully tap out from below.
Assemble according to the numerical order. Disassemble in the opposite direction.
Grease all threads with high temperature lubricant.
Assembly
8
7
6
5
4
3
2
1
16
19
17
14
10
12
13
11
2
15
8
9
4
18
2
6

BHP-Nozzle, Installation & Service Instructions
herzog systems ag Tel. [phone]
Fax. [phone]
www.herzog-ag.com
[e-mail] 5 M. S. Version 0.3
Parts subject to wear / ordering spare parts
Your contact information:
Company
Street
City / Zip
Contact
Tel. / Fax
E-Mail
Lasered nozzle identity no.: please insert here
Quantity Part (for part name, see chapter Assembly)
Send to:
herzog systems ag
CH-9230 Flawil / Switzerland
Tel. [phone] / Fax [phone]
www.herzog-ag.com / [e-mail]