Supplier and Process Quality Audit for Plastic Injection Molding: Multi-turn Dialogue and Prompt Engineering

Data for plastic injection molding comes from resin batch property sheets, injection molding machine parameters, mold temperature controllers, MES

What the Data for This Category Looks Like

Data for plastic injection molding comes from resin batch property sheets, injection molding machine parameters, mold temperature controllers, MES systems, and dimensional and visual inspection equipment. Supporting daily documents include injection molding process cards, raw material drying records, mold history logs, first article inspection reports, patrol inspection forms, and material change and machine cleaning records.

Data is updated per production batch, each mold or material change, and during each shift’s patrol inspection. Documented parameter fields with clear units include resin moisture content, injection molding speed, mold temperature, and other similar metrics.

Constraints Imposed by These Characteristics on Multi-turn Dialogue and Prompt Engineering

Because data is updated frequently per production batch, mold/material change, and shift patrol, multi-turn dialogue must limit the validity period of historical context. This prevents expired mold history or drying record data from being called.

Because data originates from multiple systems and fields have dedicated units, prompts must explicitly guide users to provide identifiers such as batch numbers and mold IDs. This ensures called parameters match the current production scenario.

Additionally, spoken language input from operating personnel must be converted to standardized parameter queries. Dialogue modules need automatic optimization capabilities to support injection molding process adjustment needs.

Configuration Settings

The following configurations are based on FastGPT v4.17.0.

Configuration ItemRecommended SettingRationale
Maximum context lengthFirst 10 turns of dialogue or 3000 charactersAdapts to the high-frequency update characteristic of injection molding data, preventing expired data from interfering with dialogue logic
Single search limitTop 6 recalled resultsCovers multi-dimensional data needs including injection molding processes, molds, and inspections
Question optimization switchEnabledConverts spoken descriptions from operating personnel into standardized parameter queries
variables bindingBind current batch number and mold IDAutomatically pulls exclusive data such as corresponding resin properties and mold history
chatId persistenceBind per production batchEnsures coherent dialogue context for the same batch audit
messages history truncationRetain conversation records from the last two shiftsAdapts to shift-updated patrol inspection and drying record data

Three Common Misconfigurations

  • Phenomenon: The knowledge base page displays all injection molding-related documents, but the dialogue prompts that the knowledge base is empty. Cause: Documents are not bound to the dialogue variables context, or rules for filtering the knowledge base by production batch are not configured.
  • Phenomenon: Content annotations are triggered only after the stream response is fully completed. Cause: Annotation logic is configured to execute only after the full response is generated. The injection molding scenario requires real-time feedback on process adjustment suggestions, which should be triggered as each segment of the response is returned.
  • Phenomenon: After uploading an XLSX-format patrol inspection form or property sheet, the data cannot be retrieved during dialogue. Cause: The XLSX file is not configured as a searchable knowledge base source, or the injection molding parameter fields in the file are not parsed correctly.

How to Verify Proper Configuration

  • Initiate a simulated dialogue, enter the current production batch number, and verify that the corresponding resin property parameters are automatically pulled.
  • Send a spoken query such as "Why are there more material flower marks today and how to adjust them", and verify that it is automatically optimized into a standardized parameter query.
  • Switch between different production batches, and verify that the dialogue context retains the process data of the corresponding batch without confusion.
  • Upload an XLSX-format patrol inspection form, and verify that the injection molding dimensional inspection data in the table can be retrieved during dialogue.

The values provided here are common starting points and should be measured against the reader's own samples.