What Data for This Category Looks Like
Daily data for plastic injection molding enterprises covers resin batch property sheets, injection molding machine operating parameters, mold temperature controller records, MES system work orders, dimensional and appearance inspection reports, and other materials. New data is generated per production batch, each mold or material change, and after each shift inspection.
Daily documents include injection molding process cards, material drying records, mold history logs, first article inspection forms, patrol inspection records, material change and machine cleaning records, and others. Document structures contain structured parameter tables, process steps, equipment numbers, batch numbers and other fields. Field units include megapascals, seconds, degrees Celsius and other common industrial units.
What Constraints Do These Characteristics Impose on the "Document Parsing and Chunking" Link
This category has diverse document types with significant structural differences, including plain text process descriptions, parameterized tables, and multi-page history documents. When chunking, avoid splitting paragraphs that span critical parameters, otherwise parameter retrieval during quotation preparation will be affected.
Frequently updated documents require parsing processes to control time costs; excessive parsing delays will slow down bid document preparation progress. The high number of structured fields requires retaining metadata associations during chunking, otherwise key information such as raw material batches and mold numbers cannot be matched during retrieval. Differences in multi-source data formats require parsing tools to support multiple document types, to avoid parsing failures caused by format incompatibility.
How to Set Up Configurations
These configurations are adapted for FastGPT v4.17.0, adjusted for plastic injection molding scenarios:
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
chunkSize | 800–1200 characters | Fits the length of parameter sections in injection molding process cards, avoids splitting content spanning critical parameters such as filling, packing, and cooling windows |
customPdfParse | Enable table and image extraction mode | Adapts to structured tables and equipment parameter images in mold history logs and inspection forms, retains associations between fields and images |
PARSE_FILE_TIMEOUT_SECONDS | 60–90 seconds | Covers parsing time for multi-page material change and machine cleaning records, avoids timeout errors caused by long documents |
chunkSplitter | Layer by title + paragraph | Matches the chapter structure of process cards, ensures complete context of process steps is retained after chunking |
UPLOAD_FILE_MAX_SIZE | 50 MB | Adapts to upload limits for batch injection molding records, avoids parsing failures for large files |
chunkSettingMode | Manual configuration | Adjust chunking rules separately for different document types, adapts to the diverse structures of injection molding documents |
Three Common Mistakes
- Symptom: After uploading an injection molding process card PDF, embedded equipment parameter charts are not displayed in the interface. Cause: The image extraction switch for
customPdfParsewas not enabled; the default parsing process only extracts plain text content. - Symptom: Retrieved chunked content cannot be associated with the corresponding raw material batch number metadata. Cause: Metadata fields at the top of the document were not retained during chunking, causing context association breaks.
- Symptom: Excel-format raw material property sheets cannot be uploaded, or table content is lost after parsing. Cause: The
UPLOAD_FILE_MAX_SIZEandcustomPdfParsenon-PDF document support configurations were not adjusted, leading to format incompatibility.
How to Confirm Proper Configuration
- Upload a single-page injection molding process card PDF, check if the parsed result retains embedded parameter tables and equipment images.
- Upload a multi-page (3+ pages) material change and machine cleaning record document, verify that parsing task time stays within the preset
PARSE_FILE_TIMEOUT_SECONDSrange. - Run a keyword search, confirm that returned chunked content includes associated metadata such as raw material batch numbers and mold numbers.
- Upload an Excel-format raw material property sheet, confirm the file can be uploaded normally and complete structured parsing.
The values provided are common starting points and should be measured against the reader's own samples.