Benefits
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High Productivity
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Works with all air setting
and cold box binder systems
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Simple, Rugged Design
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Ideal for small to mid-sized
jobbing foundries
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Blow cores and mold with the same machine with swivel mixer
Features
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Fill timer for control of
any continuous or batch mixer
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Warning timer and buzzer for
advance notice of work time expiration
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120V Operation
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Spare parts are available
from full service industrial supply houses or Palmer
inventory.
The COREMAKER No-Bake
The COREMAKER was designed to provide small to mid-sized jobbing
foundries a simple, dependable, low cost core blower. The
approach Palmer has taken in this product greatly reduces the
overall equipment cost for blown cores by eliminating expensive,
non-essential controls and gadgets. The COREMAKER comes with a
M-Series Swivel Mixer to make cores and sizeable molds. Molds
and cores can be produced on the same machine!
A primary consideration in the
design of the COREMAKER was productivity. Through time studies,
it has been determined that it is more efficient to blow
multiple core boxes from the same chamber of sand instead of
“batched” mixes for each core.
Once the sand is mixed, a preset
timer set to the work time of the chemical system being used
begins its countdown. The operator will continue to blow cores
until a warning buzzer indicates that the resin system work time
has expired or he has discharged all of the sand from the
chamber.
After the buzzer sounds, the
operator will remove the corebox and initiate the purge. As
standard, the system is designed to purge into a 5-gallon bucket
for easy handling and disposal.
After the purge is complete, the
operator will initiate a refill of the magazine, and resume
blowing cores.
Blow Chamber Filling
The blow chamber is filled in the
blow position (no swinging or transfer of the blow chamber is
required). A super duty slide gate retracts the top blow chamber
seal to allow mixed sand to drop into the blow chamber. The
mixer runs for a preset time. This time is easily adjustable
based on the cores to be run and production method.
Once filling is complete, the
chamber seal plate is returned to the blow position and the
machine waits for the operator to indicate readiness to clamp
and blow.
|
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Resource Center |
Video |
Palmer CM Series CoreMaker (includes RFID)
|
Article |
Keeping Jobbing Foundry Coremaking Fast and Flexible |
Article |
Core Blower saves small foundry $30,000/Yr,
eliminates coreroom personnel. (Modern Casting) |
Article |
Excal RFID Testimonial
(RFID Journal) |
Article |
RFID Coremaking
(Cast Metal & Diecasting Times) |
Catalog |
No-Bake CoreMaker™ CM-Series Core Blowers |


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Blow
Chamber
The blow chamber consists of a heavy wall
steel fabrication with a smooth steel lining. The steel fabrication is
designed to provide a lifetime of service.
Generally, the smoother the blow chamber
surface, the less frequent cleaning will be required. Proper cleaning
practice is essential to cleaning and maintenance reduction. A planned
application of mold release extends the time between cleanings and life
of the blow head.
The COREMAKER comes configured as a 25,
50, 100, or 200 pound blow.
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Pressure Manifold
The
pneumatic system of the COREMAKER consists of a large volume surge tank
for consistent blow pressure and volume, and the clamp and blow manifold
pictured to the left. Blow pressure is easily visible and adjustable for
the operator. Blow pressure is visible in the control enclosure face as
well as directly on the blow chamber. The pneumatic control system
includes all required control elements. All the customer is responsible
for supplying is clean, dry compressed air at 90 PSI minimum through a
non-restricted air line sized per the recommended line size.
The air for blowing cores is tangentially
injected into the blow chamber. Nominal line sizing is 1” or 2"
depending on blow chamber size. Direct fed air from the pressure tank
ensures maximum blow pressure and flow.
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Clamping Table
Dual
6" bore core box clamping cylinders and a heavy (1-1/2" thick) 24" x 30"
table fitted on a high tolerance, super-duty die set clamp the core box
to be blown between the table and seal surface of the blow chamber. This
design allows for constantly changing core box heights without any
adjustment being made to the blow chamber.
Note that the table clamp controls
consist of two momentary push buttons, keeping the operator's hands free
of moving parts. This methodology although simple, is effective in
preventing injuries. Additionally, the COREMAKER is outfitted with a
simple interlocked door limit switch to prevent operation of the
clamping table with the door open.
The clamping table is raised until the
blow chamber is sealed after which the operator will initiate blowing.
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Blow
Chamber Purge
To purge the CM, the corebox is removed
from the work table and the table is raised fully to the clamping
position. The blow cycle is then initiated, purging the chamber. A hole
in the center of the work table allows the purged sand to blow directly
through the plate into a 5 gallon bucket for disposal.
For clarity, it is far better to run
tightly controlled amounts of sand to prevent waste. The excellent
repeatability of the blow system allows for tight batch run control,
minimizing waste.
Since the operator does not have to move
the blow chamber to clean, productivity is greatly enhanced by
eliminating wasted motion.
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Controls
The operator has direct control of the
fill time and blow pressure. The fill time is controlled by an
adjustable, high-resolution timer located within the control enclosure.
The heart of the system controls is a
state of the art smart relay. This relay imparts the power and
flexibility of a PLC and display at a fraction of the cost.
All function timers are adjusted on the
smart relay interface screen.
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Safety Door
As
a safety precaution for operators, the COREMAKER comes standard with a
durable hinged door. This door not only prevents nuisance sand from
escaping the core box blowing area, but also protects the operator from
injury due to core box failure. The door is interlocked to the clamp
function such that the table will not clamp unless this door is closed.
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Side
Discharging Molding
Perhaps the greatest advantage to the
COREMAKER is its flexibility. The COREMAKER comes with a mixer swivel if
a mixer is ordered. Not only does it make cleaning easier but also
yields the added benefit of bench molding or conveyor loop molding to
the side of the machine. This provides a small jobbing foundry with
ultimate core making flexibility at the lowest cost possible.
Order of Operation - No-Bake
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Operator initiates mixer fill
sequence
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Filling is completed and work timer
starts
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Blow chamber is sealed
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Operator places core box on clamping
table
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Operator depresses clamping
initiation buttons (dual push buttons eliminate the ability to cycle
the machine with the operator's hands inside.
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After the core box is clamped and
sealed, the operator depresses the blow button.
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Blowing continues for as many core
boxes as are required to empty the blow chamber or reach the work
time. If sand remains in the chamber after the work time expires, a
warning buzzer sounds to advise operator that purge is required.
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Operator initiates purge (if the
buzzer sounds) or when all sand is dispensed.
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Cycle is repeated.
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Order
of Operation - Cold Box
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Operator initiates mixer
fill sequence
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Filling is completed
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Blow chamber is sealed
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Operator places core box on
clamping table
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Operator depresses blow
initiation button. The unit then automatically clamps,
blows, releases, gas head in, clamp, gas, purge, release and
retract gas head.
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Operator initiates purge (if
desired)
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Cycle is repeated.
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