Injection Molding Unit Production Milestone Data Transmission
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Solution Overview
Problem
Existing production management systems for injection molding units face challenges in balancing data sampling intervals, where longer intervals lead to inadequate production monitoring and shorter intervals increase data communication volume and processing load, potentially affecting machine operation.
Innovation Solution
A production management system that includes an injection molding unit with a determination unit to assess production equivalence to predetermined units (shot, box, lot, job) and an operation information transmitting unit, which transmits data to a control device only when production milestones are reached, thereby optimizing data transmission and reducing processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sampling interval is made shorter to improve production monitoring accuracy, then the measurement precision is improved, but the data communication volume and processing load increase
Solution Approach 1:
The patent segments the continuous data transmission into discrete unit-based transmissions. Instead of transmitting data at fixed time intervals, the system divides production into units (e.g., per molded product or per batch) and transmits operation information only when a unit is completed. This segmentation reduces unnecessary data transmission while maintaining monitoring accuracy.
Solution Approach 2:
The system implements periodic data transmission triggered by production milestones rather than continuous or fixed-interval transmission. Operation information is transmitted periodically when predetermined units are produced, creating an event-driven transmission rhythm that balances monitoring needs with communication load reduction.
2Measurement precision
If the sampling interval is made shorter to improve production monitoring accuracy, then the measurement precision is improved, but the processing load increases affecting machine operation
Solution Approach 1:
The patent segments the processing load by dividing data transmission into discrete unit-based events. The control device processes operation information only when production units are completed, rather than continuously processing data at fixed intervals. This reduces the overall processing load and prevents interference with injection molding machine operation.
Solution Approach 2:
The injection molding machine autonomously determines when to transmit data based on unit completion, without requiring continuous external polling or control. The machine self-manages the timing of data transmission, reducing the processing burden on the control device and allowing the machine to focus on its primary molding function.
3Quantity of substance
If the sampling interval is made longer to reduce data communication volume, then the data communication volume is reduced, but the production monitoring accuracy deteriorates
Solution Approach 1:
The patent implements dynamic data transmission timing based on production unit completion rather than fixed time intervals. The transmission interval adapts to the actual production rate and unit boundaries, ensuring that monitoring accuracy is maintained by capturing data at meaningful production milestones while reducing unnecessary transmissions between units.
Solution Approach 2:
The system changes the transmission trigger parameter from time-based to production-unit-based. Instead of transmitting at fixed time intervals, the transmission is triggered by the completion of predetermined production units (e.g., per molded product or batch). This parameter change ensures that data is captured at meaningful production points while reducing overall communication volume.
4Productivity
If the sampling interval is made longer to reduce processing load, then the processing load is reduced, but the production monitoring accuracy deteriorates
Solution Approach 1:
The patent implements dynamic processing timing where the control device processes data at variable intervals determined by production unit completion rather than fixed time schedules. This dynamic approach maintains monitoring accuracy by processing data at meaningful production milestones while allowing the control device to remain idle between units, improving overall efficiency.
Solution Approach 2:
The system changes the processing trigger from time-based to production-unit-based parameters. The control device processes operation information only when predetermined production units are completed, rather than continuously or at fixed intervals. This parameter change reduces processing load while maintaining accuracy by focusing computation on meaningful production events.
Data Source
AI summary
A production management system includes: an injection molding unit producing a molded product; and a control device. The injection molding unit includes: an injection molding machine molding the molded product by injection molding; a determination unit determining whether a number of the molded products to be produced is equivalent to a predetermined unit of production or not; and an operation information transmitting unit transmitting operation information of the injection molding unit when it is determined that the number of the molded products to be produced is equivalent to the predetermined unit of production. The control device includes an operation information receiving unit receiving the operation information transmitted from the operation information transmitting unit.