Precision Structure Injection Molded Parts
Custom Precision Connector & Electronic Structural Parts | Injection Molding
精密连接器与电子结构件 | 精密注塑定制加工
Injection-molded precision connector housings and electronic structural parts. The photo shows a family of connector plastic parts: black thermoplastic bodies with single- and double-row terminal cavities, parallel fine slots (IDC type), elongated mating cavities and some gold-plated terminal structures, integrating mounting holes and locating features. Custom tooling, material selection, insert molding and integrated finishing available.
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Close-up views of mold fitting, surface finish, and precision structure.
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What it is
Precision connectors and electronic structural parts are the most precision-critical category of molded part. They are not judged on appearance but on three things: whether the terminals fit, whether they sit in the right place once fitted, and whether their undersides end up coplanar once mounted to the board.
Take a 0.5mm-pitch connector: terminal pitch tolerance, terminal-cavity dimensional accuracy and terminal coplanarity typically sit in the hundredths-of-a-millimetre range. That demands tool electrode accuracy, press repeatability and material dimensional stability all at once — the highest combined demand the toolroom and the molding floor can be asked to meet.
Structural features visible in the product photo
The photo shows a family of connector plastic parts (roughly 12 pieces) arranged in a ring, all with black thermoplastic bodies. The following configurations can be identified:
Terminal-cavity type — several parts with single- or double-row terminal cavities, with metal terminals visible inside some cavities and a gold appearance
Parallel fine-slot type — several parts carrying dense parallel fine slots, the characteristic form of IDC (insulation-displacement) connectors used for ribbon-cable termination
Elongated mating-cavity type — several parts are elongated bodies with an open mating cavity at one end (in the centre part, terminals are densely arrayed along the length inside the opening)
Mounting-feature type — some parts show mounting holes, locating posts or snap-fit lugs
Manufacturing capability
The part is developed on in-house tooling design and manufacturing. The toolroom runs wire EDM, jig grinding, surface grinding, form grinding, CNC machining centres and EDM — 11 key machines forming a complete precision machining chain. On the molding side, 20 in-house machines combine all-electric, servo and vertical presses — the all-electric machines offering the repeatability precision small parts require, and the vertical machines suiting terminal insertion and insert-molding work.
Integrated finishing
After molding, spray coating, silk-screen printing, pad printing, electroplating and anodizing can be integrated, reducing multi-supplier coordination and the quality handover risk it brings. Connector-type products commonly also involve terminal insertion, crimping and appearance inspection.