1990 HARTIG - DAVIS STANDARD  ACCUMULATOR HEAD BLOW MOLDER
DUAL 6 POUND HEADS ON 18 INCH CENTERS
3 INCH 75HP EXTRUDER

ONE (1) 1990 HARTIG MODEL SMP-30-206-3624S40 
SINGLE PRESS BLOW MOLDING SYSTEM

EXTRUDER SECTION
3 inch diameter 24:1 L/D Hartig High-Torque Extruder driven by a D.C. drive motor.  
Hartig's advance design high performance barrier type MC4 feedscrew machined from 
SAE 4140 steel with Stellite hardened flight lands.  This screw is rated at approximately 
450 pounds per hour of HDPE.  Screws can also be custom designed for your specified 
polymer upon request.  Thrust bearing is a Timken with a B-10 life of 242,400 hours at 
5,000 PSI and 100 RPM. 
Tangential opening feed throat machined from high strength ductile iron, cored for water 
cooling and includes a hardened liner. The barrel is fabricated from SAE 4140 steel with 
bimetallic liner and has a pressure rating 10,000 PSI.  A safety rupture disc is supplied at 
the discharge end.  The barrel is divided into four (4) zones of ceramic heaters for heating 
and individual high air volume blowers for cooling.  The barrel and heaters are covered 
with insulated guards.  Extruder drive is a 75 HP, D.C., 1750 RPM constant torque system.  
It includes an open drip-proof motor, cooling blowers and filter.  All drive controls are 
mounted in the main extruder control panel.  

PRESS SECTION
36 inch wide x 24 inch high clear platen press with three (3) heavy duty tie bar construction, 
giving the operator unlimited access for ease of, part removal and mounting of molds.  
The following specifications apply:
A.   Clamp Tonnage:                         40 tons
B.   Maximum Platen Opening:                44 inches
C.   Minimum Platen Opening:                10 inches
D.   Vertical Height Adjustment             +4 inches
E.   Side to Side Adjustment.
G.   High speed press closing             1200 inches per minute

The platens and end frames are fabricated from 1020 steel.  The end frames are designed to 
support the three tie bars. The heavy duty platens are clamped and opened by two hydraulic 
cylinders per platen.  These cylinders are mounted on the end frames with the actuating rods 
connected to the platens for even and complete clamping force distribution. Hartig's unique 
platen timing chain system assures symmetrical clamp closing.  Included are flexible hydraulic 
hoses and piping between the press and unitized base.  For operator safety, a hydraulic and 
electrical safety system is provided to prevent press movement while press gates are open.  
The press area is enclosed with expanded metal to ensure safe operation.

HYDRAULICS
PRINCIPLE OF DESIGN:   The system is designed to store energy in the dwell period of the 
machine cycle (high pressure clamp).  The energy is stored in the form of pressure by using 
accumulators, which reduces the size of pumps, motors and charging valves.

COMPONENTS: An A.C. motor drives a pressure compensated pump, which primary function 
is high pressure clamp.  The secondary pump function is to charge the three accumulators.  
The accumulators are used for press and head movement and programming tooling.  
Sequencing of the pump and isolation of the programmable tooling is accomplished by a 
small manifold.  This manifold also contains a pressure relief valve for pump protection, a 
solenoid operated dump valve, and gauges required for pressure set-up. A large manifold 
using cartridge valves actuates the press and head functions.  Press speed is accomplished 
by selected valves having adjustable mechanical limiters. The single head design will use 
the mechanical limiters for ram forward and fill rate.

FILTRATION & COOLING:  An A.C. motor driving a fixed vane pump provides oil flow through 
a filter and a thermostatic controlled heat exchanger.  The filter is low pressure spin on type 
having optional elements for water removal.  A high performance heat exchanger utilizes fins 
to extract heat, requiring fewer tubes and 50% less water.

SAFETY: A  cam operated valve located at the press gate is used for hydraulic safety of gate 
position.  In open position, the valve prevents head and press movement.  The pilot logic of the 
directional cartridge valves are controlled by small solenoid cartridge operated valves which must 
be energized at the same time for each machine functions.  This lessens the possibility of a single 
valve sticking allowing an  undesired continuation of motion. All necessary valves are manifold 
mounted and the  entire system is pre-piped and prewired.

PNEUMATICS
Includes required regulators, filter and valving for air blow and pre-blow

ACCUMULATOR HEAD
Dual 6 pound Hartig Accumulator Head on 18 inch centers with first-in, first-out flow 
configuration proving optimum parison uniformity.  The unique coaxial dual hydraulic cylinders 
provides a rapid parison drop and high precision parison programming.  The head is designed 
for rapid color change, ability  to process difficult materials, and air passage for top blow.

CONTROLS
The control panel is a three-door NEMA enclosure with main power disconnect shock mounted on 
the unitized base.  Barber-Coleman MACO 8000 Microprocessor control system with touch screen 
operator's station for control of the following functions:  Control temperature on all zones displayed 
via operator's station. (up to 96 zones available)  The system provides independent zone temperature 
control and can be independently tuned .  Total machine sequential control up to 100 independent 
timer functions available depending on number of sequence modules in system. Solid state cartridges 
for program and control parameter storage.  Parison process control with individual weight and die gap 
settings and graphic display of profile setpoints. 12" programmable touch sensitive CRT display. Parison 
programming controls of up to 100 points per head.   The exclusive use of individual control modules 
allows initial system to be easily expanded to meet future requirements. Sequence control is accomplished 
by the use of  an IBM or IBM compatible personal computer using industry standard JIC graphic symbols.
BASE
Main base is a unitized construction and serves as a mounting platform for extruder and 
accumulator head.

TOOLING
5.5 inch and 6.25 inch