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Injection Moulds and Tooling

Eight mould types, mould bases and components from the brands your drawings already name, and a steel list that runs from 1.1730 through to S136.

TJ-Teck started in 2017 with a single machine and now builds plastic injection moulding tools as its main business. The shop works to the standards used by buyers in Europe and America, which in practice means the mould base, the hot runner and the standard components come from suppliers your maintenance department already stocks.

The eight mould types below are the ones TJ-Teck quotes as standard. Which one your part needs is usually decided by two things: whether the part has a thread or an undercut, and how many parts a year you actually buy.

Assembled injection mould standing on the fitting bench with guide pillars and slides

Mould types

What each of the eight is for

These are the mould types TJ-Teck quotes as standard. The right one is usually obvious once the part geometry and the annual volume are both on the table.

Standard MoldThe default two-plate tool for a part with no undercut. Lowest build cost and the fastest route to first samples.
Prototype MoldA simplified tool for design verification and small pre-production batches, built in softer steel with fewer actions.
Reversed MoldCavity and core swapped relative to the usual layout, used where the cosmetic face has to stay on the moving half.
Multi-cavity MoldTwo or more identical cavities in one tool. The right answer once annual volume makes the extra build cost cheaper than the extra machine hours.
Unscrewing MoldA rotating core that unwinds a moulded thread, so the thread flank has no parting line and the closure seals.
Hot runner MoldNo runner to regrind and a gate position that is not tied to the part edge. Built with HRS, Synventive, Husky, Incoe, Mold Master, YUDO, Mastip, Ewikon, Runipsys or DME systems.
2K Over MoldA rigid substrate moulded first, then a second material moulded over it. Two tools, a transfer step, lower tooling investment.
2K Rotational MoldThe core rotates between two cavities inside one cycle, so a finished two-material part leaves the machine every shot. Higher build cost, much shorter cycle.

Shop floor

Tooling built and fitted in Chang'an

Cavity and core work, bench fitting, first trial and export crating.

Polished mould cavity insert with a circular core and machined cooling ports
Polished mould cavity insert with a circular core and machined cooling ports
Large machined mould core for a deep-draw plastic housing, milled and bench fitted
Large machined mould core for a deep-draw plastic housing, milled and bench fitted
Deep mould cavity block with lifting eyebolts, machined before polishing
Deep mould cavity block with lifting eyebolts, machined before polishing
Assembled injection mould standing on the fitting bench with guide pillars and slides
Assembled injection mould standing on the fitting bench with guide pillars and slides
Injection mould with orange top clamping plate and ejector mechanism assembled for trial
Injection mould with orange top clamping plate and ejector mechanism assembled for trial
Finished injection mould with a central sprue bush ready for first trial on the moulding machine
Finished injection mould with a central sprue bush ready for first trial on the moulding machine
Multi-cavity mould half with four round cavity inserts and cooling circuits
Multi-cavity mould half with four round cavity inserts and cooling circuits
Mould half showing slide pockets, angle pins and machined steel inserts
Mould half showing slide pockets, angle pins and machined steel inserts
Fumigated wooden export crates stencilled TJ, packed for mould shipment from Dongguan
Fumigated wooden export crates stencilled TJ, packed for mould shipment from Dongguan

Quotation for injection moulds and tooling

Send 2D and 3D data or a sketch with the annual volume, and the quotation comes back in 1-3 working days.

E-mail the tool shop Quotation & RFQ