Ningbo Chaoxu Plastic Products Co., Ltd. undertakes mold development and injection molding services for snap-lock power adapter housings and charger plastic shells, supporting drawing-based mold making and sample-based reverse engineering. We integrate plastic mold R&D, precision injection molding, and supporting post-processing into one service, targeting power supply manufacturers, security electronics, instrumentation, and consumer electronics industries, offering one-stop supporting services of product DFM evaluation, mold manufacturing, and batch injection molding.

      This product is a snap-lock power adapter housing, compatible with 5V/6V/9V/12V/15V/24V multi-specification power supplies. It adopts a screwless snap-fit locking structure and is available in European and American standard plug versions. Heat dissipation ribs are provided on the side walls to enhance internal heat dissipation. The upper and lower shells are firmly aligned with snap-fits, making assembly convenient. The housing requires high strength, insulation and flame retardancy, good snap-fit elasticity, resistance to breakage after repeated assembly and disassembly, and precise plug hole positioning, meeting power supply safety regulatory requirements and protecting the internal PCB board and electronic components. Mold design, trial molding, and mass production can be carried out based on customer 3D drawings or physical samples.

      The factory is located in Mould City, Fanshi, Longshan, Cixi, Ningbo, covering an area of 2,000 square meters, with independent mold workshop and injection molding workshop. The mold workshop is equipped with a full set of processing equipment including CNC machining centers, high-speed engraving and milling machines, EDM machines, and grinders. The injection molding workshop is equipped with Haitian injection molding machines with servo robotic arms, providing stable mass production capability for flame-retardant power supply plastic parts.

Product Processing Advantages

      1. Integrated mold opening and injection molding — product structure evaluation, mold processing, trial molding and mold correction, and injection molding production are all completed in-house, reducing outsourced processes and facilitating control over delivery time and product consistency.

      2. Early-stage DFM manufacturability analysis — risk prediction for snap-lock clips, heat dissipation ribs, and plug positioning groove structures; optimization of gate and venting solutions to avoid defects such as housing warpage, snap-fit breakage, and weld lines.

      3. Multiple grades of engineering plastics available — ABS, flame-retardant ABS, and PC options, molded in black natural color, meeting safety regulatory requirements for insulation, flame retardancy, and temperature resistance of power supply products.

      4. Precision mold processing — professional ejection design at snap-fit positions to ensure stable snap-fit locking force; high dimensional accuracy of plug mounting grooves to accommodate different plug specifications.

      5. Complete quality control system — material and flame-retardant certificates available for flame-retardant raw materials; first article inspection, in-process patrol inspection, sampling inspection of snap-fit locking force and hole dimensions; production batch traceability.

      6. Supporting post-processing — burr trimming, appearance sorting, packaging and shipping, reducing customer secondary processing workload.

Applicable Processing Categories

      Injection molding of snap-lock power adapter housings

      Custom mold making for European/American standard charger plastic shells

      Switching power supply plastic housings

      Security power supply housings

      Multi-voltage power adapter housings

      Customization of flame-retardant plastic housings for various power supplies and chargers

      Other power supply and charger plastic shells — mold feasibility can be evaluated upon providing drawings or samples.

Common Material Descriptions

      Flame-retardant ABS: cost-effective, good flowability, stable snap-fit molding, the mainstream material for power adapter housings, meeting basic flame-retardant safety regulations.

      PC: high flame retardancy, high temperature resistance, strong rigidity, suitable for high-power power supply housings, excellent heat aging resistance.

      Material selection is determined comprehensively based on product power, flame-retardant grade, temperature resistance requirements, and cost. Engineers provide material selection recommendations.

Processing Workflow

      Customer provides 3D drawings / physical samples → DFM product structure evaluation → Output solution quotation, confirmed by both parties → Mold structure design → Mold CNC/EDM processing, polishing and fitting → T1 trial molding → Samples sent to customer for confirmation → Mold modification per feedback → Batch injection molding after sample approval → Product inspection → Packaging and delivery → After-sales follow-up.

      During the requirement evaluation stage, customers provide drawings or physical samples, specify flame-retardant grade, plug specifications, and annual output requirements — quotation solution output within 1–2 working days.

      Mold design focuses on snap-lock clips, heat dissipation ribs, and plug positioning grooves, optimizes the cooling system, and reduces housing warpage and deformation.

      Trial molding tests appearance, snap-fit assembly performance, and plug compatibility; mass production starts after customer confirmation.

Quality Control

      Raw material incoming inspection verifies grade; material certificates available for flame-retardant materials.

      Dimension verification at each mold processing stage, with focus on key tolerances of snap-fits and plug grooves.

      Injection molding production implements first article inspection, scheduled in-process patrol inspections, sampling tests of snap-fit locking force, and monitoring of defects such as deformation and short shots.

      Finished products undergo key inspection of assembly surfaces, snap-fit elasticity, and hole position accuracy; defective products are sorted and quarantined.

      Production records document machine and raw material batches for full traceability.

Factory Basic Information

      Factory covers about 2,000 square meters, divided into independent mold, injection molding, and assembly workshops.

      Mold workshop has over ten sets of complete processing equipment including CNC machining centers, high-speed engraving and milling machines, EDM machines, and grinders.

      Injection molding equipment consists of Haitian injection molding machines with servo robotic arms and production monitoring systems, excelling in flame-retardant power supply plastic parts production.

      Core engineers have 25 years of plastic molding experience and 15 years of automotive parts quality control experience, with OEM supporting service experience.

      Factory is located in Mould City, Fanshi, Longshan, Cixi, Ningbo, near National Highway 329, with convenient logistics and transportation.

Cooperation Steps

      1. Consultation & contact: Provide 3D drawings or physical samples, specify annual output, flame retardancy, and plug specification requirements; response within 1 working day.

      2. Solution evaluation: Engineers complete product evaluation and output mold and injection molding product quotation within 1–2 working days.

      3. Quotation confirmation: Confirm mold steel, plastic material, delivery time, and cooperation terms.

      4. Mold development: Complete structural design, processing, assembly, trial molding, and mold correction; cycle time depends on product complexity.

      5. Sample confirmation: Send trial samples; customer verifies appearance, snap-fit assembly, and plug compatibility, completing mold acceptance.

      6. Mass production: Carry out injection molding per order, deliver after inspection and packaging.

FAQ

Q: Can molds be made with only physical adapter housing samples but no drawings?

A: Yes, we support sample-based reverse engineering to generate 3D models before mold development.

Q: Will the snap-lock clips break after repeated assembly and disassembly?

A: The DFM stage optimizes snap-fit thickness and draft angle, and selects tough flame-retardant materials, ensuring the clips are not easily broken after repeated locking.

Q: Can the housing material meet power supply product flame-retardant safety requirements?

A: Yes, raw materials with corresponding flame-retardant grades can be selected, and material reports can be provided to meet power supply product safety standards.

Q: Does power adapter housing injection molding support small-batch trial production?

A: After mold acceptance, we support everything from small trial orders to large batch orders.

Q: Are samples provided for confirmation before mass production?

A: Yes, samples are provided after trial molding. Mass production starts only after customer verifies dimensions, assembly, and snap-fit performance.

Contact Information

      Company name: Ningbo Chaoxu Plastic Products Co., Ltd.

      Factory address: No. 5, Fanshi Weisan Road, Longshan Town, Cixi City, Ningbo City, Zhejiang Province

      Business: injection molding of power adapter housings, custom mold making for charger shells, flame-retardant power supply plastic parts, precision injection molds, sample/drawing-based customization

      1688 store: https://chaoxusuliao.1688.com