INJECTION MOLDING WORKER (MARKET COMPETITIVE)

The Injection Molding Worker (BPS-04) serves as a skilled machine operator within the production floor of a public sector industrial establishment. The role exists to ensure the continuous, efficient, and safe operation of injection molding machines for manufacturing plastic components meeting prescribed dimensional and quality standards. The incumbent is responsible for the complete machine cycle from mold installation and parameter setting to part ejection, inspection, and basic troubleshooting, directly contributing to the organization's production targets and asset utilization.

Daily workflow involves interpreting production job cards, selecting and drying raw material grades (PP, HDPE, ABS, etc.), and configuring machine parameters — injection pressure, holding pressure, screw speed, barrel temperatures, and cycle timers — via the machine control panel (HMI). The worker performs mold changes using overhead cranes/hoists, aligns ejector systems, and connects cooling water circuits. In-process quality checks are conducted using vernier calipers, go/no-go gauges, and visual inspection charts per approved control plans. All output, scrap rates, material consumption, and machine downtime are recorded in shift production registers and entered into the factory management information system (MIS). Career progression follows the departmental promotion channel to Senior Operator (BPS-06), Leading Hand (BPS-09), and Foreman (BPS-11) upon passing prescribed trade tests and seniority requirements.

Selection for this Category B post is conducted strictly through a Practical Skill/Trade Test and a Direct Interview (Viva Voce); no written examination is administered. Candidates are evaluated on a live injection molding machine where they must demonstrate mold setup, parameter optimization for a given sample, production of conforming parts, and identification of induced faults. The oral viva voce assesses technical knowledge of molding principles, material behavior, safety protocols, and situational judgment on the shop floor.

• ✓Operate and monitor assigned injection molding machines across all shifts to achieve daily production quotas
• ✓Install, align, and secure molds on platens using clamping bolts, locate rings, and hoisting equipment per setup sheets
• ✓Configure and optimize process parameters (temperature profiles, injection speed/pressure, cooling time) on machine controller
• ✓Inspect molded parts at defined intervals using calibrated measuring instruments and compare against engineering drawings
• ✓Perform routine preventive maintenance including lubrication of toggle systems, nozzle cleaning, and filter checks
• ✓Maintain accurate shift logs for production count, reject analysis, material lot traceability, and machine alarm history

• 💡Proficiency in setting up and tuning injection molding process parameters on hydraulic and toggle machines
• 💡Ability to read and interpret mold assembly drawings, part specifications, and material safety data sheets (MSDS)
• 💡Competence in identifying and correcting common defects: short shots, flash, sink marks, warpage, and burn marks
• 💡Skill in safe mold handling, crane signaling, and cooling circuit connection/disconnection procedures
• 💡Knowledge of thermoplastic material characteristics, drying requirements, and regrind ratio management
• 💡Adherence to industrial safety standards: lockout-tagout (LOTO), PPE compliance, and emergency stop protocols