Packaging Machine Timing Control for Workpiece Shift Prevention
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Solution Overview
Problem
Conventional horizontal pillow packaging machines face efficiency issues due to positional shifts of workpieces, which can cause jamming and damage, requiring machine stoppages for jam removal, leading to lowered operation efficiency.
Innovation Solution
A control apparatus that acquires position detection information from sensors, determines shift directions based on elapsed time or position data, and controls downstream units to prevent jamming by adjusting processing timing, allowing continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the packaging machine operates continuously without position detection and control, then productivity is maintained, but workpiece positional shifts cause jamming and machine stoppages
Solution Approach 1:
The control apparatus performs preliminary detection of workpiece positions using sensors before the workpieces reach the downstream sealing/cutting units. Based on detected positional shifts, the system anticipates potential jamming and takes preventive action by adjusting the timing of downstream unit operations, thereby preventing jamming before it occurs and enabling continuous operation
2Reliability
If the machine stops to remove jammed workpieces, then positioning reliability is improved, but productivity decreases due to stoppages
Solution Approach 1:
The control apparatus continuously monitors workpiece positions using sensors and feeds this information back to the control unit. Based on the feedback regarding positional shifts, the system dynamically adjusts the timing of downstream unit operations to accommodate shifted workpieces, preventing jamming and eliminating the need for stoppages while maintaining positioning reliability
3Device complexity
If downstream units operate at fixed timing without adjustment, then device complexity is reduced, but workpiece positional shifts cause jamming
Solution Approach 1:
The control apparatus introduces dynamic timing adjustment for downstream units based on real-time workpiece position detection. The control unit varies the operation timing of sealing and cutting units according to detected positional shifts, making the system adaptable to position variations without requiring complex mechanical adjustments or additional hardware
Data Source
AI summary
A control apparatus for controlling a packaging machine that includes a conveyance mechanism for conveying an item to be packaged includes: an acquirer configured to acquire a detection result from a sensor for detecting an item to be packaged; a determiner configured to obtain elapsed time from a predetermined time point until when the item to be packaged is detected by the sensor, based on the detection result acquired by the acquirer, and determine a shift direction in which the item to be packaged is shifted from a predetermined position, based on the elapsed time; and a controller configured to control, for the item to be packaged for which detection is performed by the sensor, implementation of any one of downstream units that are downstream of a unit in which the detection is performed by the sensor, based on the shift direction that is determined by the determiner.