Franklin Manufacturing Corporation 5000 Series User manual

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -1- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
MODEL 8000 and 5000
SERIES (Linear Wedge Drive Machines)
OPERATING INSTRUCTIONS
HOT STAMPING MACHINES

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -2- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
FORWARD
These instructions covering operation of your Franklin Roll Leaf Stamping
Press are necessarily general in nature. Specific information and additional
help in the operation of the press and decorating your parts are available
from Customer Service, Franklin Manufacturing Corporation, 692 Pleasant
Street, Norwood, Mass. 02062.
In these instructions, we have tried to outline how the press operates, how to
set it up, how to use it, and how to “trouble shoot” it. Before operating the
press, you should read the entire booklet.
If your press is equipped with accessories such as meter indicating heat
control, air head return, air slide table rotary table, etc., special instructions
are included with these standard instructions.
WARNING!!!
1. A hot stamping press applies high pressure with heat to article being
marked. Care should be taken by the operator to keep hands free of
the stamping area whenever the equipment is connected to air and
electricity. When handling large articles, hold them by the sides so
that the hands are not under the stamping head. When handling small
articles, loading onto fixtures should take place away from the
stamping area. A MANUAL OR AIR SLIDE TABLE SHOULD BE
USED WHEN STAMPING THESE SMALL PARTS.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -3- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
A TRANSPARENT SAFETY GATE SHOULD BE INSTALLED TO
PROTECT THE OPERATOR. Because this Franklin press is so
versatile, it is impossible for Franklin to supply a universal safety gate or
slide fixture. A device should be made by the customer to protect his
operators. Do not hesitate to consult the manufacturer for advice or
quotations on custom built part loading devices, etc.
2. This press is furnished with 2 hand buttons wired so that an operator
must press both buttons to initiate a cycle. An antitie down feature is
standard on these presses (except where automatic loading features
are provided with presses custom built to order).
3. Any attempt by the customer to alter the wiring or construction of this
press which renders the two hand anti-down circuit useless IS
COMPLETELY UNAUTHORIZED AND PROBABLY WILL
RESULT IN SERIOUS INJURY TO THE OPERATOR.
4. This machine was thoroughly tested before shipment. Please
remember that any machine can malfunction for a number of reasons
beyond the manufacturer’s control. If the operator detects any
malfunction, this press should be immediately turned off and the shift
foreman should be notified at once.
5. It is extremely important to remember that when servicing or setting
up this equipment, electrical power should be shut off and the air line
completely disconnected to prevent accidental actuation of the
stamping head.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -4- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
ON RECEIPT OF THE PRESS
Remove the upper portion of the crate from the skid; remove the bolts
holding the press and legs to the skid; lift the press with a sling and
mount on legs.
ELECTRICAL CONNECTIONS
Connect only to proper power source. It is a good idea to check the
voltage at an outlet before connecting the press. Check the tag on the lead
wire of the press to see whether your press requires 110, 230 Volt single
phase, 230 Volt three phase, 480 Volt single phase, or 480 Volt three
phase. Special voltages can be supplied when necessary. Please write for
details. AIR SUPPLY
Air should be supplied through a minimum hose or pipe of 3/8” ID to
insure proper press speed. The press is capable of operating at up to 150
PSI with no damage to any component. Minimum available pressure
should be 80 PSI to 125 PSI, any less than 80 PSI will result in artificial
upper limits on available die pressures. If limited pressure is available at
all times, contact Customer Service for information on boosting output of
press on low pressure air.
REMOVAL OF PROTECTIVE METAL COATING
The coating on this machinery is easily removable with any petroleum
distillate such as kerosene. Just soak a rag and wipe off all sprayed parts
where necessary.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -5- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
SPECIAL NOTE REGARDING ALL MODEL 8000 SERIES PRESSES
In order to prevent damage to the cam rollers in the press, packing has
been placed between the cam roller and the wedge cam prior to shipment.
This packing should be removed before the machine is activated. This
can be done by manually removing the packing from the top rear of the
wedge cam.
ELECTRICAL SYSTEM:
The machine uses three basic electrical circuits.
A 230 VAC three phase current is provided to the machine through a
separate disconnect box which is fuseable and located on the upper side
of the press. The 230 three phase current is wired through contactor
points to two banks of two cartridge heaters wired in series to the outside
legs of the input with the center line common to all four heaters.
A second set of lines from the fuseable disconnect switch is wired to the
primary side of a 230-120 VAC transformer in accordance with
manufacturer’s specifications.
A 120 VAC is taken from the secondary of this transformer and provides
current for the control elements of the press.
This circuit is fused with 10 amp cartridge fuses and is provided with a
control toggle switch which is located in the upper left-hand corner of the
control box panel.
A pilot light located directly above this switch and wired across the 120
VAC circuit, will glow when this switch is in ON position.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -6- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
This control switch will also activate the solid state heat control. The
solid state heat control unit can be located inside the control box easily,
since it is the only unit composed of a printed circuit board with a small
relay in the corner.
Power for this unit is supplied to Terminals L1 and L2 on the top surface
of the board. A jumper is used between L1 to terminal C for the common.
The potentiometer located on the front panel of the control box is used as
a remote control for pre-setting the desired temperature. Wires from this
potentiometer are connected to P1, P2, and P3 on the circuit board.
(Green and White to P1------- Red and White to P2------- Black and
White to P3.)
A thermistor probe, which is located in the aluminum or heated portion
of the head, provides a signal to this unit to energize the normally open
contact when the heated head temperature becomes lower than the pre-set
temperature.
The two leads from the thermistor are connected to T1 and T2.
When the thermistor calls for heat, the circuit board generates a 24 volt
current to the small relay located in the corner of the control board. A
110 volt is generated across the contact points of the small relay to close
the 220 volt contactor, thus supplying current to the cartridge heaters.
A yellow pilot light, located on the panel directly above the heat
adjustment, will light and stay lit as long as the thermistor is calling for
heat.
The third major circuit is the dwell time control. This circuit provides the
necessary electric signals to operate the pneumatic units of the press.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -7- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
The main control element of this circuit is a solid state timer.
This unit is also supplied with a plug-in relay, the contacts of which
provide 115 volt signals to the control pilot valve of the machine.
Power is supplied to this unit through Terminals 1 and 2 of the Terminal
strips located on top of the timer. A toggle switch (Head Switch) is
provided to turn this unit off and on and is also used as a safety switch
when it is necessary to work directly under the ram. A pilot light (Head
On) will light when this switch is in the ON position.
This timing unit is activated by the two hand switches on the press which
are wired to Terminals 10, 11, and 12. A jumper is connected between
Terminals 1 and 7 to provide a common for this unit. Terminal 9, which
is a normally open contact, will produce a continuous 115 volt current to
the solenoid for the period of time pre-set on the potentiometer located on
the face of the panel. A red pilot light is wired in parallel with this circuit
and will stay lit as long as current is being supplied to the solenoid. The
two leads from the dwell potentiometer are connected to Terminals 5 and
6. A toggle switch (Set Up Switch) Is in this circuit which allows
continuous current to the solenoid as long as this switch is open, making
it much more convenient to set the proper level of the work table with the
head in the DOWN position. The head will return to its UP position when
this switch is closed.
A micro switch located on the right side of the frame of the press and
activated by a cam which goes up and down with the head, provide the
pinch point circuit. The cam should be set so that the limit switch is
closed when the head is in the full DOWN position. The two leads from
this switch are connected to Terminals 3 and 4 on the timer.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -8- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
There is a dual knob control on the potentiometer which provides a fine
timing control. The large knob reads on the outside scale while the small
knob reads on the inside scale or fractions of a second.
PNEUMATIC SYSTEM:
Air is directed to the ram cylinder ports by an air pilot operated four way
valve with spring return. The exhaust ports of this valve are supplied with
speed control mufflers to control the speed of the ram up or down. Air is
supplied to this valve through the rubber hose which is attached to an in-
plant air source, through an air filter, air regulator, and oil unit to the
import of the valve. Pilot line pressure is taken ahead of the air regulator
and directed to the import of a solenoid operated four way valve.
The normally opened port of this valve is plugged and the normally
closed port is piped to the pilot side of the main ram valve, which is
mounted on the end of the ram cylinder. When an electric current is
applied to the solenoid of the pilot valve by the dwell time control,
pressure is applied to one side of the ram valve causing the head to go
down as long as the pilot pressure is applied. When the solenoid of the
valve is de-energized, the pilot line pressure is exhausted allowing the
spring side of the main ram valve to return to its normal rest position
causing the ram to return to its normal rest position causing the ram to
return to its UP position.
The leaf pull cylinder ports are supplied air by a double pilot operated
four way valve with a spring return on one end. Air supplied this valve, is
taken ahead of the main ram air regulator through its own regulator and
oiler to the import of the valve.
Pilot pressure is supplied to this valve from the same normally closed
port of the pilot valve.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -9- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
Air enters the pilot system through the leaf pull delay control, pressurizes
the spring loaded end of the leaf pull valve, continues past the check
valve to the other end of the leaf pull valve, and to the spit valve.
When pilot pressure is applied, no shifting of the leaf pull valve, no leaf
advance occurs. When the signal is removed, however, air bleeds from
the spring and through the delay valve at the controlled rate. The check
valve prevents bleeding at the other end of the valve. At some time,
determined by the rate of bleed (adjustment of delay), the pressure on the
spring end is lowered enough to permit the captured air on the other end
to shift the valve against the spring. Leaf pull begins. At the end of the
extension stroke of the cylinder, the spit valve is tripped, air between the
check valve and the spit valve is exhausted, allowing the spring to return
the leaf pull valve to the rest position, causing the cylinder to retract.
1. CONNECT AIR HOSE.
Ideally this supply should be 100 PSI on the low setting of the plant
air compressor for the best press operating conditions. The Franklin
hot stamp machine requires at least 50 PSI for pilot operation of the
four-way valves used.
2. ADJUST AIR PRESSURE REGULATOR.
The main ram regulator should be adjusted in accordance with
information noted in depth of stamping penetration control in the
Machine Control Section of these instructions.
3. PLUG IN ELECTRICAL POWER.
Be sure to note whether machine is 115 VAC, 220 VAC Single Phase,
or 220 VAC three phase and connect only to appropriate outlet.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -10- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
4. TURN ON POWER SWITCH
Red pilot light should glow when this switch is in the ON position.
This pilot light is located directly above the power switch.
5. HEAD SWITCH
The head switch should be in OFF position. The amber pilot light
directly above this switch will not glow when this switch is in the
OFF position.
6. SET HEAD TEMPERATURE CONTROL
Set head temperature control to OFF position. This will be
accomplished when the setting knob is turned counter clockwise as far
as it will go.
7. LOWER WORK TABLE
It will be necessary to lower the work table at least 2 ¾” above the
stamping level of a fixtured part using a linear wedge press or, at least
3” above the stamping level of a fixtured part when using a direct air
cylinder press.
8. REMOVE DOVETAIL FROM HEAD OF PRESS
Remove dovetail from head of press by loosening the clamp and
sliding the dovetail out parallel to the dovetail.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -11- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
9. INSTALLOR ATTACH DIE TO FACE OF DOVETAIL PLATE
Die should always be mounted with the artwork centered on this plate.
This will prevent uneven pressure on the die or rocking of the head
under pressure if die is not mounted directly under the ram.
10.RE-INSTALL DOVETAIL IN HEAD AND SNUG CLAMPS
It is important not to tighten clamps too tight at this point since
expansion during heating of the head will place undue pressure on the
clamp threads when heating.
11.PLACE SET-UP SWITCH IN DOWN OR OFF POSITION.
12.SET FINE ADJUSTMENT ON DWELL TIME CONTROL.
Set the fine adjustment on the dwell time control to zero and the
coarse time to 1 second.
13.TURN ON HEAD SWITCH
Turn on head switch and cycle press by depressing both hand safety
switches at the same time. Hand switches should be held until head is
down before releasing, since pinch point circuit will allow the head to
return to its UP position automatically, if this is not done.
14.CYCLE SEVERAL TIMES.
Cycle several times readjusting coarse time on dwell until time is set
so head will descend to the bottom of the ram stroke and hesitate
slightly before returning to the UP position.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -12- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
15.PRE-ADJUST LEAF PULL SPEED CONTROLS.
Pre-adjust the leaf pull speed controls so leaf pull cylinder runs
smooth without any jerky motion. The speed should be only fast
enough to prevent the jerky condition and no faster. Final adjustment
will be made on this control later in setup procedure.
16.PRE-ADJUST LEAF DWELL.
Pre-adjust the leaf dwell so the knurl and rubber roller do not start
until the head is in a full UP position. This adjustment will also e
finalized later on in this setup procedure.
17.PUT SET UP SWITCH TO ON OR UP POSITION AND CYCLE
PRESS.
Head should now stay in down position. CAUTION: WHENEVER
THE SETUP SWITCH IS BEING USED, BE CAREFUL NO TO
PUT YOUR HAND BETWEEN THE TOP OF THE HEAD AND
THE BOTTOM OF THE MAIN FRAME UPPER CASTING
BECAUSE SHOULD POWER FAIL WHILE THE HEAD IS IN
THE DOWN POSITION, THE HEAD WILL RETURN
IMMEDIATELY.
18.POSITION FIXTURE.
Position fixture with part in place on the work table.
19.RAISE WORK TABLE.
Raise work table until stamping surface is in contact with the die and
continue to raise the table until it is snug. Clamp or bolt fixture into
place.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -13- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
20.ADJUST PINCH POINT CAM.
Adjust pinch point cam so pinch point limit switch will be closed with
the head in the Down position.
21.TURN OFF SET UP SWITCH.
Head should return to a full UP position.
22.TURN OFF HEAD SWITCH.
23.RAISE TABLE.
Table should now be raised about a quarter of a turn adjustment nut to
the final table elevation. See Machine Control Instructions.
24.ADJUST TEMPERATURE CONTROL
Adjust Temperature control and wait for head to heat. Pilot light
should glow when heaters are on. This amber pilot light is located
directly above the heat control adjustment dial. Press should be up to
heat when pilot light turns off the second time. Heaters will now be
automatically turned off and on to maintain the heat setting after the
press reaches heat.
25.PLACE FOIL ON PART.
Place foil on part by tearing a piece from the roll large enough to
cover the stamped area with coated side down.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -14- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
26.TURN ON HEAD SWITCH
Turn on head switch and cycle press. Recycle press as necessary using
fresh part and foil with each cycle until a complete stamping is made.
Increase or decrease the dwell control until this is accomplished.
27.TURN OFF HEAD SWITCH.
28.THREAD AND POSITION FOIL.
Thread and position foil as noted in Machine Controls Section of
instructions.
29.TURN ON HEAD SWITCH AND CYCLE PRESS AS NECESSARY
30.ADJUST FOIL LENGTH, CYCLING PRESS AS NECESSARY
31.RE-ALIGN ROLL LEAF IF NECESSARY.
32.ADJUST AND FINALIZE LEAF PULL FEED AND DWELL
CONTROL AS NECESSARY
33.FINALIZE STRIPPER BAR ADJUSTMENT.
34.CYCLE.
Cycle until three satisfactory stampings are made in succession.
35.PRESS IS NOW READY FOR PRODUCTION.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -15- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
MACHINE CONTROLS:
Introduction
The Franklin Hot Stamp Machine has four basic areas of control. A good
understanding of these control areas is essential before a setup is
attempted.
The four areas of control are heat control, fusion cooling control, foil pull
control, and depth of stamping penetration control. Each of these control
areas have two or more adjustments of electrical, pneumatic, and
mechanical and/or combinations of adjustments of these elements.
Depth of Stamping Penetration Control
Molded plastic parts which are to be decorated using the hot stamping
process will always have a certain amount of variation in the wall
section. No matter how well a part is fixtured, it is rare that the stamping
area will be totally parallel with the die surface. It is necessary that the
die make contact with the lowest level in the area to be stamped in order
to obtain a complete transfer of the stamping foil.
Since different engineering plastics have different hardnesses, it is
obvious that the different head pressures must be applied to the stamping
die in order to penetrate the substrate being stamped.
When using a metal die on styrene, ABS, acrylic, etc., it will require
approximately 1 ton per square inch of stamping impression area in order
to penetrate this material to the proper depth. For materials such as
general purpose polyethelene, soft polyvinyl, or other materials of this
Shore hardness range, it will take approximately ½ ton per square inch of
impression area. By extrapolation then, the material in the middle range

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -16- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
Shore hardness, i.e., cellulose acetate will require about ¾ of a ton of
pressure per square inch of impression area.
The basic adjustment then to be made in this control area is the PSI
adjustment of the ram air regulator. The first step is to arrive at the total
impression area of the metal die. This may be estimated, measured
directly, or in some cases, where die detail is intricate a planimeter may
be used to measure the actual artwork. Once the square inch area is
know, the following formulas may be used to arrive at the proper PSI
adjustment of the ram regulator, when using a metal die.
Eight Ton Machine 12.5 x Sq. In. = PSI
Five Ton Machine 20 x Sq. In. = PSI
Two Ton Machine 50 x Sq. In. = PSI
One & One-Half Ton Machine 66.6 x Sq. In. = PSI
One Ton Machine 100 x Sq. In. = PSI
When a silicone rubber die is used, in order to tip the raised portions of
normal engineering materials, silicone rubber die which is normally
between 60 to 70 Shore hard will normally give before the harder plastic
material.
When using a rubber die then for tipping, the basic rule is to allow 300
PSI per square inch of stamping area in order to assure the rubber die, in
this case, will give enough to make a good thermal contact with the
lowest point in the stamping area.
Hence, once the square inch area is known, the following formulas may
be used to arrive at the proper PSI adjustment of the ram air regulator,
when using a rubber die.

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -17- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
Eight Ton Machine 1.88 x Sq. In. = PSI
Five Ton Machine 3 x Sq. In. = PSI
Two Ton Machine 7.5 x Sq. In. = PSI
One & One-Half Ton Machine 10 x Sq. In. = PSI
One Ton Machine 15 x Sq. In. = PSI
It should be noted, these same basic formulas may be used in arriving at
the proper tonnage machine to use when projecting work orders.
The next adjustment in this control area is the elevation control for the
work table itself.
If a direct air cylinder drive is used, the piston of the ram cylinder should
never be allowed to completely bottom out. This will allow the air press
to automatically adjust to varying part thickness of the plastic casting.
When using a linear wedge drive machine, the tale is normally cranked
up until it makes solid contact with the die in the head down position.
The setup switch is turned off then allowing the head to retract upward.
The table adjustment nut is given about a quarter turn clockwise en order
to raise the table slightly higher than the contact point. This will allow the
wedge to travel in farther, driving it so far in to compensate for a thicker
part. The linear wedge can be considered adjusted properly when the
moveable cam follower bearing on top of the ram is just going around the
corner upon the bottom of the wedge.
The last adjustment of this control area is the ram down speed, which is
controlled by the speed control muffler located on the exhaust part of the
main ram valve. The proper exhaust can be located by holding your hand
over the two exhaust valves and cycling the press. The one which blows
air on the down stroke of the press is the one to adjust for the down
stroke speed. The screw on top of this muffler may be turned clockwise
to slow down the down stroke, or turned counter clockwise to speed up

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -18- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
the down stroke. The jam nut should be securely tightened when this
adjustment is made.
The object is to provide the ram with enough down peed without an
impact force. If the ram is allowed to come down with too fast of a speed,
it tends to emboss the part before it has a chance for the surface of the
stamp area and the coating on the foil to reach a fusion temperature
without proper pressure which is needed for a good thermal bond, since
the part may be embossed too deeply by the hammering action.
Heat Controls
The heat is controlled on the machine by two adjustment elements. The first
control element, either a thermostat or solid heat control can be considered a
rough heat setting, while the dwell time control can be considered a fine heat
adjustment.
Since, very simply, hot stamping is the fusion of a coated plastic material to
the surface of a compatible plastic material, the rough or heat control setting
is dependent upon the substrate to be stamped. Hot stamping foils
manufactured by different manufacturers will not always require the same
amount of heat even though stamped on the same substrate. The
approximate heat control setting then, should be one recommended by the
foil manufacturer, or through experience.
Minor heat adjustments, using the thermostat or solid state heat control, can
take up a good deal of press production time by the time the heated head
levels out as the result of a heat change. Consequently, the dwell time
control can be effectively used for minor heat adjustment without the loss of
production time in setting up.
The dwell control timer regulates the time in seconds or fractions of seconds,
that the die stays in contact with the work before the head returns to its

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -19- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
normal up rest position. Obviously, the longer the head is in contact with the
work, the more heat is transferred from the die to the work.
It should be noted that the dwell timer is turned on at the same time the ram
receives a signal to do down. The dwell time, then also includes the travel
time of the head from the UP position until contact with the work. Therefore,
uneven air supply to the press can change the downward stroke speed of the
ram creating a variance in actual dwell contact with the work, and cause
inconsistent stamping results.
For this reason, the ram air regulator must never be adjusted higher than the
low point of the plant air supply system.
Fusion Cooling Control
After a stamping is made, the melted surface of the casting which is stamped
and the melted plastic coating which is also in a melted condition can be
pulled apart if the foil is stripped too quickly. This causes an incomplete
transfer of the stamping foil since the melted plastic on the back of the foil
can adhere just as easily to the foil carrier as it can to the melted plastic
surface. There are three adjustments in this control area to counter this
condition.
The first adjustment area is the element of the press called the stripper bars.
The stripper bars provide an additional function of keeping the foil away
from the hot die when the head is in the UP position. The stripper bars are
the two parallel bars which the foil is strung under from the play out roll to
the pinch rollers or pull rollers. The vertical bars of this elements are spring
loaded to allow the die to press on top of the leaf and the casting on the
down stroke of the machine. Ideally, these bars should be blocked so that the
parallel bars will be stopped at the same level as the stamping, the head
continues to travel downward as the vertical stripper bars are pushed up

FRANKLIN
MANUFACTURING CORPORATION
Reprinted by AFM Engineering, Inc. -20- Phone [phone]
1313 E. Borchard Ave. Fax [phone]
Santa Ana, CA 92705 Email [e-mail]
through the frame against the spring load until die contact with the work
while the stripper bars hold the foil on the stamping surface as the spring
load and the vertical bars unload, then finally strip the foil from the work
when the vertical bars reach the jam nut which may be adjusted on the top of
he vertical bars. The travel time then, of the head on the up stroke, between
the time the die leaves the work and the stripper jam nuts are contacted,
stripping the foil allows the necessary cooling time for the fusion.
It is obvious then, the lower the stripper bars are set, the longer the cooling
time or the slower the up ram speed, the longer the cooling time.
The up ram speed control can be adjusted in the same manner that the speed
down control is adjusted.
The final adjustment of this control area is the foil dwell control. If the foil
advances before it is stripped from the work on the up stroke of the press,
this can also pull the fusion apart causing an incomplete transfer.
The Pneutrol flow control valve located near the leaf pull four-way control
valve can be adjusted to delay the leaf pull from acting until the head is in
the full up position.
The round control knob of this valve is screwed clockwise for longer dwell
and counter clockwise for a shorter dwell. The jam nut should be firmly
secured when this adjustment is finalized.
Oil Pull Controls
In order to make the adjustments in this control area, foil must be strung
through the foil pull mechanism.