Quick Couplings

Peripheral equipment (auxiliary equipment) is everything around the injection molding machine that feeds it, conditions the material, controls temperature and handles parts — as opposed to the press itself. Getting the periphery right is often what separates a stable, automated cell from one that fights moisture, color and scrap problems all day. ## What counts as peripheral equipment - Material drying & conveying: dryers, hopper loaders, vacuum conveying and central material systems. - Dosing & blending: gravimetric or volumetric dosers and blenders for masterbatch, additives and regrind. - Temperature control: mold temperature control units (thermolators/TCUs) and chillers that hold the coolant setpoint. - Part & runner handling: robots and eoat end of arm tool, conveyors, sprue pickers, degating and vision-inspection stations. - Size reduction: beside-the-press granulators that turn runners and rejects into regrind. ## Why it matters The press only melts and injects; much of the quality is made — or lost — at the periphery. Wet resin from a poor dryer causes splay and weak parts; an unstable temperature unit drifts dimensions and cycle; a robot with EOAT turns a semi-auto job into a lights-out cell. It is the broader secondary equipment that makes a molding cell productive. ## Related terms - See also: dryer, hopper, eoat end of arm tool, regrind, secondary equipment ## What is peripheral equipment in injection molding? It is the auxiliary equipment around the machine — dryers, conveying, dosers/blenders, mold temperature units, chillers, robots/EOAT and granulators — that conditions material, controls temperature and handles parts. ## What is the difference between peripheral and auxiliary equipment? They mean the same thing: machinery that supports the molding machine rather than doing the molding. "Peripheral" and "auxiliary" are used interchangeably. ## Why is peripheral equipment important? Because melt quality, color, dimensional stability and automation all depend on it — drying, dosing, temperature control and part handling happen outside the press.

Mold (Tool) is the mechanical assembly of plates, cavities, injection system and cooling that shapes the molded part. It is the single most expensive asset of the operation (10,000 – 500,000 USD) and its design dictates everything: cycle, quality, productivity and unit cost. ## Main components - Cavity plate (fixed half): nozzle side, usually houses the cavity - Core plate (moving half): ejector side, holds the core and ejector pins - Injection system: sprue, runners, gates (cold or hot) - Cooling system: water/glycol channels, conformal in premium molds - Ejection system: pins, sleeves, stripper plates, slides for undercuts - Standard components: leader pins, bushings, retainers, sensors - Replaceable inserts in wear areas ## Mold types - Single-cavity: prototypes, large parts, low production - Multi-cavity (2/4/8/16/32+): mass production - Family mold: different cavities for parts of the same assembly - Cold runner: with cold runners separated each cycle - Hot runner: no runner scrap, shorter cycles - Stack mold: two levels of cavities to double capacity - Two-shot / multi-material: two resins in the same part ## Mold materials - P20 (pre-hardened steel): standard for medium production, easy to machine - H13: hardened inserts, high thermal-wear resistance - S136 (stainless): polished cavities, corrosion resistance (PVC, PET) - Aluminum (7075): prototype or low-volume molds - NAK80: mirror polish without distortion ## Typical service life - Aluminum: 5,000 – 50,000 cycles - P20: 100,000 – 1,000,000 cycles - Hardened H13: 1 – 10 million cycles - Carbide / TZM in hot-runner gates: up to 50 million ## Critical maintenance Cleaning after every production run, vent inspection, lubrication of pins and guides, monitoring of cooling channels (scaling), and repair of cavity damage before it spreads.