Tools are operated by high-pressure compressed air that drives the mechanisms
• Air compressors – Reciprocating driven by the up-and-down motion of a piston in a cylinder – Rotary the air is compressed by a device similar to a centrifugal or axial pump.
• Air is enclosed in plastic plastic tubing •
Used for mechanical handling and positioning and positioning , material forming and and process control
Pneumatic Tools in RMG Industries
Needle Positioner • Stops the machine's needle in the "up" or "down" position • Allows the work to be turned e.g. when sewing corners
Advantages : • Helps in maintaining continuous line of stitching • Minimizes bending or breaking needles and releases thread for free movement of the machine • Allows the operator to have both hands free to handle the fabric • Positioner also helps maintain constant speed and torque of the machine as well as speeds up the outlining process
Thread Trimmer
• Fitted with synchronisers and needle positioner motors, which enable the machine to lift the needle when it stops and cut the threads automatically underneath the throat plate
Thread Trimmer Advantages : • Productivity is increased by 40 per cent • Consumption of Thread is Reduced by 40 per cent • Frequency of Replacing the Bobbin is Reduced by 20% • Save Labour by 40% • Easy Operation
Thread Wiper
•Lays the needle thread on top of the presser foot, after the thread has been cut and the presser foot has been lifted • Avoids the needle thread becoming trapped when sewing begins again
Presser Foot Lifter • With a light step, the presser foot lift automatically raised • Resulting in a high level of work efficiency • Reduce the operator's fatigue and enables the operator to operate the sewing machine rhythmically
Automatic Stacker • Attachments for retrieving for stacking stewed parts in superposed fashion automatically • Eliminates the need for the operator to extract or discard the part after it is sewed. • Two Types of Stackers •Lift Stackers •Flip Stackers
Automatic Stacker contd.
Pneumatic Robotic Arm Robey the Robot Shirt Stacker
Automatic Stacker contd. Concept • Shirts coming off the drier belt are the orange lines.
• They enter the jaws, triggering the electric eye in one set of pincher fingers
• The moving part at the far left is the “hold down” so only one shirt comes off.
•The machine flips and deposits the shirt onto it’s frame as it returns to standby
Collar Turning Machine
Collar Turning Machine
Collar Turning Machine
Collar Turning Machine
Advantages of Pneumatic System •
Since Air is in a plastic tubing – Dirt cannot go in • Less affected by lint from materials • Less abrasion from sizing, oil from machinery or vibrations created by high – speed sewing
• An air device creates no spark – important consideration for work in dangerous areas •
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