How Are Ballpoint Pens Made? Inside a Ballpoint Pen Factory Ballpoint Pen Manufacturing Machine

1. Parts Production Process

- Small-Scale (Daily Capacity ≤ 50,000 Units): Small injection molding machine (for pen barrel/cap molding, 16-24cavities per cycle).

 Medium-Scale (Daily Capacity 50,000-200,000 Units): Multi-cavity injection molding machine (48-96 cavities, improving pen barrel production efficiency),  Large-Scale (Daily Capacity ＞ 200,000 Units): High-speed injection molding machine (96-144 cavities, with robotic arm for automatic part removal).

2. Refill Assembly Process

- Small-Scale: Manual ink injector (quantitative ink filling), manual nib press (nib crimping), simple leak tester (manual operation for ink leakage detection).

- Medium-Scale: Semi-automatic ink injector (automatic quantitative filling, 50-100 refills/min), pneumatic nib press (precision crimping, reducing part damage), online leak tester (synchronous refill sealing detection).

- Large-Scale: Fully automatic refill assembly line (integrated ink filling-spring installation-nib pressing-inspection, 150-300 refills/min), high-speed leak detector (infrared sensing, 3x efficiency improvement).

3. Pen Assembly Process

- Small-Scale: Manual assembly workbench (with tool box, manual part assembly), simple crimping tool (securing pen clips/caps).

- Medium-Scale: Semi-automatic assembly line (with conveyor belt, multiple stations, 30-80 pens/min), automatic crimping machine (precision pressure control, enhancing assembly firmness).

- Large-Scale: Fully automatic ballpoint pen assembly machine (integrated feeding-assembly-inspection, simultaneous refill/clip/cap assembly, 100-200 pens/min), robotic assembly unit (for precision part fitting).

4. Quality Inspection Process

- Small-Scale: Manual writing test bench (smoothness detection), visual magnifier (appearance defect inspection), manual tensile tester (part firmness test).

- Medium-Scale: Semi-automatic writing tester (simulated writing trajectory, automatic smoothness judgment), visual inspection equipment (rapid appearance defect recognition), fully automatic tensile tester (batch assembly strength testing).

- Large-Scale: Online inspection line (integrated writing/appearance/strength testing, automatic defective product rejection), big data quality analysis system (tracking inspection data, optimizing production).

5. Packaging & Delivery Process

- Small-Scale: Manual box packing machine (manual product-manual integration), manual strapping machine (simple packaging).

- Medium-Scale: Semi-automatic box packing machine (automatic box taking-product loading-sealing, 20-50 boxes/min), semi-automatic strapping machine (automatic carton strapping).

- Large-Scale: Fully automatic packaging line (integrated box packing-labeling-strapping-cartoning, 60-120 boxes/min), intelligent warehouse docking equipment (direct finished product delivery to storage racks).

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