Printing device for cardboard boxes
Cost reduction of 290,000 yen
in one year by reducing moment-stops
Moment-stop improvement example
Engine parts transfer process
Cost reducing effect
Achieved a reduction in labor cost of 280,000 yen/year.
Device description
This is a device for transferring engine parts for automobiles.
This device uses a rodless air cylinder.
Problems that have occurred so far
Air cylinders cannot adjust acceleration, speed, and deceleration, and the impact when stopping at the end of the stroke could cause the workpiece to fall. The moment-stop was about 2 minutes, and it occurred about 15 times a day.
Improvements brought by electrification
The electric cylinder can be started and stopped smoothly. It can move at high speed between start and stop, and there is no shock when stopping at the end of the stroke, eliminating the possibility of the workpiece falling. As a result, the number of moment-stops that used to occur an average of 15 times a day has decreased to 0.
Cost reduction effect assuming the number of workers is 1
Conditions
Labor cost
2,300 yen/hour
Number of operation days per year
240 days
Effect
By replacing it with an electric cylinder, the number of moment-stops decreased from 15 times/day to 0 times/day.
When using the air cylinder, the device was stopped for a total of 30 minutes a day due to moment-stops.
By replacing it with the electric cylinder, moment-stops cease, and
labor costs allocated to recover from these were reduced by 276,000 yen/year.
Breakdown
Time consumed by moment stops
Air cylinder: 2 minutes (moment-stop duration) x 15 times (moment-stop frequency) = 30 minutes/day
Electric cylinder: 0 minute
Labor costs incurred due to moment-stops
Air cylinder: 30 minutes x 2,300 yen/hour = 1,150 yen/day
1,150 yen/day x 240 days = 276,000 yen/year
Electric cylinder: 0 yen
Other improvement examples
