Runner geometry
Flow path and channel sections matched to the cavity layout.
Hengqi engineering & manufacturing
One connected system from product review to validated mould.
Engineering, hot runner design, precision machining, inspection, assembly and trial are managed as one delivery chain for IML and thin-wall packaging mould projects.
01 / Mould development process
A controlled route with an engineering output at every phase.
The schedule connects design release, material preparation, machining, assembly and trial. A 60-day yogurt cup project is one reference—not a blanket promise. The final plan is confirmed from product complexity, cavity layout and acceptance requirements.
- 01
Product & DFM review
Capacity, wall thickness, rim, label, resin, machine and production target are reviewed before the mould structure is released.
- 02
Mould base & steel route
Datum faces, plate machining, cooling layout, core steel and heat treatment are planned as one controlled manufacturing route.
- 03
Precision machining
Five-axis and three-axis machining protect positional relationships, fitting allowance and critical mould geometry.
- 04
Assembly & inspection
Hot runner, cooling, moving interfaces and ejector systems are assembled against documented inspection points.
- 05
Trial & validation
Filling balance, product dimensions, IML result, ejection, cycle window and samples are reviewed before delivery.
02 / Valve-gate hot runner
Melt delivery is engineered with the mould—not added at the end.
Manifold layout, nozzle selection, gate position, cooling and cavity filling are reviewed together. The goal is stable production, service access and technical response throughout the mould's working life.
Hot runner layout matched to the actual cavity arrangement
Valve-gate position reviewed against product appearance and IML label
Cooling and service access considered during assembly design
Alternative customer-specified hot runner brands can be integrated
03 / Flow balance engineering
Balance is a relationship between runner, cavity, cooling and process.
Equal flow length alone does not guarantee equal parts. Hengqi reviews filling sequence, channel geometry, gate position, temperature control, cavity layout and product thickness before the design is released.
Gate timing
Valve sequence reviewed for filling behavior and appearance.
Cooling balance
Temperature consistency considered alongside melt distribution.
Trial evidence
Cavity weight, dimensions and process stability checked together.
04 / Engineering & support team
One technical conversation across the whole project.
Sales, design, machining, assembly and quality teams work from the same product and production requirements. This keeps decisions traceable from the first drawing through trial samples and production support.
Product
Geometry, wall, rim, sealing and stacking
IML
Label area, overlap, robot and vacuum
Output
Cavity count, cycle and hourly target
Machine
Tonnage, shot size, tie bars and automation
05 / Precision machining center
Datum control, coordinated geometry and predictable fitting allowance.
CNC, five-axis machining, EDM, grinding and precision finishing are planned around the functional datum chain of the mould. Fewer uncontrolled transfers support more stable component relationships during assembly.
Five-axis geometry
Complex contours and angled features held in a coordinated setup.
Precision finishing
Critical components and interfaces finished against controlled allowances.
EDM & supporting processes
Process selection matched to geometry, material and surface requirements.
Inspection before assembly
Critical relationships verified against design intent.
06 / CMM & quality inspection
Measure the relationships that make the mould assembly work.
Inspection follows functional datums and assembly-critical interfaces. The purpose is not only to record isolated dimensions, but to prevent alignment, fitting and shut-off problems from entering final assembly.
Core and cavity geometry
Insert and slider position
Shut-off and mating relationships
Cooling and assembly interfaces
Critical datum chains
Nominal-to-actual comparison
Send the product first. We will map the engineering route.
A drawing, sample photo or initial concept is enough to begin. Include capacity, material, cavity target, injection machine and expected output when available.