Another type of speed control device is the Transistorized Sensing Control or TSC unit.  This system has wire probes which typically are mounted to a stand (one probe mounted above the other) and the stand is positioned between the vertical stock reel and the production machine.  The material floats between the wire probes as the production machine is running.  As the material comes in contact with the probes, they will either turn the motor on and off or they will change the motor speed depending upon the type of control system installed. 
Vertical Stock Reels were among the first type of pay-off reels ever invented.  Their design has changed little over the years with the exception of improvements in control systems.  Pallet Decoilers such as our Coil Tamer have made attempts at improving the "pay-off" technology with great success in many areas.  There are, however, many applications (such as heavier gauge and very wide materials) that are better served the old fashioned way, with vertical stock reels.

Vertical Stock Reels were among the first type of pay-off reels ever invented.  Their design has changed little over the years with the exception of improvements in control systems.  Pallet Decoilers such as our Coil Tamer have made attempts at improving the "pay-off" technology with great success in many areas.  There are, however, many applications (such as heavier gauge and very wide materials) that are better served the old fashioned way, with vertical stock reels.
The Jaco series of vertical stock reels comes in a wide variety of sizes and specifications.  For example, they can be:  motorized or unmotorized, have a fixed core or an adjustable core, have capacities ranging from 500# to 6000#, contain a dancer arm control or a non-contact loop control,  be single ended or double ended, and be equipped to either pay-off or take-up material.
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Double Ended Reel
DC Drive Package
4000# Capacity
Adjustable Core
Dancer Arm Control
Motorized units can come with either AC or DC drive packages.  DC drive packages are better suited for those applications where the motor will turn on and off more than seven times per minute.  AC packages can come with a delay switch which will keep the motor running for a few additional seconds after the motor is told to shut off.  This additional "on" time of the motor continues to fill the storage loop of material and reduces the chance that the motor will burn up due to frequent on/off cycles.
Non-Motorized units can be equipped with any one of three types of brake systems.  The different types of brake systems are:  friction drag brake, AC electric brake, DC electric brake.  The friction drag brake is simply a clam shell type brake with an adjustment screw.  The amount of drag placed on the system is controlled by the adjustment screw.  The AC electric brake is an on/off type brake which is controlled by a dancer arm.  As the material raises the dancer arm, the brake is turned off and material is paid out to the production machine. As the dancer arm is lowered, the brake is turned on halting the pay out of material.  DC electric brakes can work as either constant drag or on/off type systems.  For constant drag, you simply set the amount of drag via a potentiameter.  For on/off applications, a dancer arm control is used as it is with AC electric systems.
Motorized units can be equipped with a variety of motor speed control devices.  The simplest and most traditional type of speed control device is the dancer arm.  With the dancer arm system, the material comes in contact with the dancer arm.  The dancer arm will change position as the material is fed to the production machine.  As its position changes, it either turns the motor on and off, or it changes the speed of the motor depending upon the type of control system installed.
Another type of speed control device is the Transistorized Sensing Control or TSC unit.  This system has wire probes which typically are mounted to a stand (one probe mounted above the other) and the stand is positioned between the vertical stock reel and the production machine.  The material floats between the wire probes as the production machine is running.  As the material comes in contact with the probes, they will either turn the motor on and off or they will change the motor speed depending upon the type of control system installed. 
A third type of motor speed control is the Sonatrol device.  This type of system is best utilized with DC control systems.  When connected to a DC motor, it changes the speed of the motor in relation to the position of the material being paid off.  The material never comes in contact with the device as the device measures the amount of material available to the machine and controls the motor speed such that an ample supply of material is always available.  Should the demand for material by the production machine be satisfied, the sonatrol device will shut the motor off.  This device is extremely valuable for those applications where the material must not be scratched, kinked, or marred in any fashion.
MODELS & SPECIFICATIONS
Model #
JVRF-500
JVRF-1000
JVRE-500
JVRE-1000
JVRE-1500
JVRE-2000
JVRE-3000
JVRE-4000
JVRE-6000
Capacity
  500#
  1000#
  500#
  1000#
  1500#
  2000#
  3000#
  4000#
  6000#
Max Width
     10"
     11"
     13"
     13"
     20"
     20"
     36"
     36"
     36"

   ID Range
1.5" to 6" Fixed
2" to 6" Fixed
6" to 24" Adj.
8" to 24" Adj.
15" to 19" Adj.
15" to 19" Adj.
15" to 19" Adj.
15" to 20" Adj.
15" to 20" Adj.
Max OD
   36"
   36"
   44"
   48"
   52"
   52"
   54"
   54"
   54"

Motorized HP
      1/4
      1/4
      1/4
      1/4
      1/2
      3/4
      1.5
      2.0
      3.0
Metal Stamping Equipment, Inc.
              P.O. Box 1043
       Southbury, Ct.  06488
       Phone:  203-264-6140
          Fax:  203-262-6107