Products · Injection mold

Multi-cavity mold with inserted cores

High-cavitation tooling with replaceable cores in a common mold base — output per cycle without rebuilding the whole tool.

  • Made in-house in Dongguan, China
  • Mold work to ±0.01 mm
  • 30 presses 20T–300T on site

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Multi-cavity injection mold base with multiple inserted cores arranged in rows
Photographed in our plant in Humen, Dongguan

When annual volume justifies more cavities, the practical way to build the tool is a single mold base carrying individually machined and replaceable core inserts. Each core can be re-cut, re-polished or replaced on its own if it wears or the part is revised, which keeps maintenance cost proportional to the problem.

Cavity count is a commercial decision, not a machining one: we size it against your annual volume, cycle time and press tonnage, and quote the alternatives. Injection molding then runs in the same building on 30 presses from 20T to 300T, so the tool and the production process are proven together.

Typical applications

  • High-volume small parts
  • Caps, closures and plugs
  • Connectors and inserts
  • Medical and diagnostic consumables

Specification

What this class of tool is built to

Our standard specification for this type of tooling, confirmed line by line on the mold design approval sheet before machining starts.

Standard tooling specification — confirmed on the mold design approval sheet
Mold constructionTwo-plate, three-plate, hot runner, stack or family — specified per part
Cavity countSingle or multi-cavity, sized to annual volume, cycle time and press tonnage
Mold steelsP20, 718H, NAK80, S136, hardened H13 / SKD61 cores
Mold work tolerance±0.01 mm
Machine accuracyDown to 0.001 mm (Yasoda, OKUMA, GF, Makino)
RunnerCold runner, hot runner or valve gate
Surface finishSPI A1–D3, bead blast, leather grain or your texture
CoolingMachined circuits; baffles or bubblers where geometry requires
EjectionPins, sleeves, stripper plate, lifters, unscrewing or collapsible core
VerificationSwiss Hexagon CMM and Zeiss Contura; dimensional report at T1
Molding30 presses from 20T to 300T, in the same building
Documentation2D/3D drawings, steel and component certificates, parameter sheet, spare parts
Lead timeTypically 15–30 days of machining after design approval
Tool ownershipYours — the tool is designed to be transferable

Values above are our standard capability for this class of tool, not fixed figures for a specific project. Cavity count, steel grade, runner type and finish are agreed with you on the design approval sheet before any steel is cut.

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Next step

Ask for a DFM review and a price for your part

STEP/IGES/X_T files, the resin, your annual volume and target market are enough to get a mold price, a cycle estimate and the risks we can see — usually in 1–2 business days.