The most common objection to a quick mold change retrofit is not cost. It is the perceived risk of extended press downtime during installation. Engineering teams have heard the horror stories — “vendor said 3 days, took 3 weeks.” This article walks through the actual day-by-day timeline of a KINGHOU hydraulic quick mold change installation on a standard injection press. The schedule below is what KINGHOU commits to in writing on most 800T to 2,500T retrofits, and what completes inside a weekend shutdown for plants that capture the platen survey data up front.
The Three-Phase Project Structure
Every KINGHOU hydraulic QMC installation runs in three phases:
- Phase 1 — Pre-Installation (3 to 5 weeks before). Engineering survey, mold inventory analysis, slot machining of existing molds, equipment manufacturing, on-site delivery scheduling.
- Phase 2 — Installation Weekend (Friday evening to Monday morning). Press LOTO, clamp mounting, HPU placement, control panel wiring, sensor calibration, dry-cycle testing, production sign-off.
- Phase 3 — Handover and 30-Day Support (4 weeks after). Operator training, SOP documentation, remote technical support, first month performance review.
Phase 1: Pre-Installation Detail (Week -5 to Week -1)
Week -5: Survey + Specification
- KINGHOU application engineer on site (or remote for overseas projects) — half-day platen survey
- Mold inventory verified: weights, dimensions, clamp slot geometry on each mold
- Plant utilities confirmed: electrical capacity, compressed air, floor space for HPU
- Fixed-price quote returned within 48 hours of survey completion
Week -4: Mold-Side Standardisation
- Existing molds machined for KINGHOU clamp slots (typically half-shift per mold on plant CNC)
- Older molds without compatible geometry: KINGHOU supplies clamp slot adapters
- Mold inventory verified against installation drawings
Week -3 to -1: Equipment Manufacturing and Shipping
- Clamps, HPU, control panel manufactured to spec at KINGHOU facility
- Installation drawings, SOP documentation, and operator training materials prepared
- Shipment scheduled to arrive 3 to 5 days before installation weekend
Phase 2: Installation Weekend (Hour-by-Hour)
Friday Evening (18:00 – 22:00)
- Last production cycle complete. Press cooled.
- Existing mold removed and returned to die rack.
- KINGHOU install crew arrives: 2 technicians + 1 application engineer.
- Press lockout / tagout (LOTO) applied with operator personal locks.
- Equipment unloaded and staged near press.
Saturday Morning (08:00 – 12:00)
- Existing T-slot bolts removed.
- Clamps positioned and bolted to platen faces (4 to 8 clamps per platen).
- HPU placed at planned floor location, leveled, electrical connection prepared.
- High-pressure hose runs installed between HPU and each clamp pair.
Saturday Afternoon (13:00 – 18:00)
- Control panel mounted near operator station.
- Wiring to press cycle interlock — clamp engaged signal must enable press cycle.
- Sensor calibration on each clamp.
- HPU electrical commissioning and pressure setting.
- First low-pressure test cycle without mold to confirm system integrity.
Sunday Morning (08:00 – 12:00)
- Representative mold loaded for first dry-cycle test.
- Clamp engagement at full pressure verified per clamp.
- Press dry cycle (no injection) completed with mold clamped.
- Adjustments to clamp positioning or pressure setting if needed.
Sunday Afternoon (13:00 – 18:00)
- First production trial run with operator on board.
- 10 to 20 production cycles to validate clamp force stability.
- Operator walked through full change-over sequence with a second mold from inventory.
- SOP documentation finalised and signed off by plant supervisor.
- Sign-off and handover to plant operations.
Monday Morning (08:00)
- Normal production resumes on the retrofit press.
- KINGHOU install crew departs.
- Phase 3 support window begins.
Phase 3: 30-Day Support Window
- Week 1 after install: Daily check-in calls with plant supervisor. Remote troubleshooting on demand.
- Week 2: Twice-weekly check-ins. First mold change-over count and time data collected.
- Week 3: Weekly check-in. Operator training refresh if needed.
- Week 4: Performance review meeting. Mold change time data compared against project commitment. Any final adjustments executed.
- After Week 4: standard warranty coverage (typically 12 months on hardware, lifetime on engineering support).
When the Schedule Extends Beyond a Weekend
The weekend schedule above holds for 80%+ of standard 800T to 2,500T injection press retrofits. The schedule extends by one to three days when:
- Existing platen requires significant face dressing or local machining (1 to 2 extra days)
- Three-phase electrical capacity needs to be added at the press location (1 day)
- Mold inventory was not slot-machined ahead of time and a high-priority mold needs same-weekend cutting (typically 0.5 day per mold)
- HPU placement requires routing through finished plant wall — drilling and protective conduit add 1 day
All of these conditions are identified during the Week -5 platen survey. They appear in the quote with the extended timeline noted, not as surprise findings on installation day.
Conclusion
The “vendor said 3 days, took 3 weeks” pattern is real. It usually traces to vendors skipping the platen survey, under-quoting on mold machining, or not committing to a specific schedule in writing. KINGHOU installations run on the timeline above because the survey work is front-loaded. Plants that capture survey data and standardise their mold inventory before installation routinely return to production Monday morning, on the standard 800T to 2,500T retrofit.
Send us your machine tonnage and platen size. KINGHOU returns a scoped installation schedule with the quote, in writing, within 24 to 48 hours. Reach the engineering team via the contact form, by WhatsApp at +86 18051902698, or by email to kh020@jskinghou.com.
