Ningbo Chaoxu Plastic Products Co., Ltd. undertakes mold development and precision injection molding services for automotive wiper pump housings and washer pump plastic housings, supporting drawing-based mold making and sample-based reverse engineering. We integrate plastic mold R&D, glass-fiber-reinforced engineering plastic injection molding, and supporting post-processing into one service, targeting the automotive parts and vehicle electronics industry, offering one-stop supporting services of product DFM evaluation, mold manufacturing, and batch injection molding.

      This product is an automotive wiper washer pump housing, made of PA6-GF30 glass-fiber-reinforced nylon. The product is integrally molded, featuring multiple positioning rib structures, a side water pipe connector, and a center mounting post. The internal rib layout is well-designed, with a molded material identification mark. The product offers high strength, creep resistance, coolant resistance, and high/low temperature resistance. The sealing surface has high dimensional accuracy, withstanding the alternating hot and cold environment of the engine bay to prevent leakage and cracking. It is a core plastic component of the automotive windshield washer system. 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, excelling in stable mass production of glass-fiber-reinforced automotive 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 glass-fiber material shrinkage, connector wall thickness, annular sealing surface, and rib structure; optimization of gate and venting solutions to prevent deformation, sink marks, and flash, ensuring sealing surface flatness.

      3. Engineering plastics available, with a focus on PA6-GF30 glass-fiber-reinforced nylon; PA66-GF can also be selected as required. Resistant to high/low temperatures and automotive washer fluid, with good rigidity and resistance to deformation, meeting automotive parts working conditions.

      4. Precision mold processing — appropriate mold steel selected for the high wear characteristics of glass-fiber materials; integrally molded structure ensures dimensional accuracy of the water pipe connector, mounting post, and annular sealing position, meeting assembly sealing requirements with no water leakage.

      5. Complete quality control system — material reports available for glass-fiber raw materials; first article inspection, in-process patrol inspection, sampling inspection of sealing surfaces, connector dimensions, and water pressure assembly; batch traceability, meeting automotive parts quality requirements.

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

Applicable Processing Categories

      Injection molding of automotive wiper pump housings

      Custom mold making for automotive washer pump plastic housings

      Glass-fiber-reinforced nylon automotive plastic parts

      Vehicle fluid pump housings

      Automotive water tank and pipeline precision plastic fittings

      Customization of various automotive engineering plastic parts

      Other automotive plastic parts — mold feasibility can be evaluated upon providing drawings or samples.

Common Material Descriptions

      PA6-GF30 (30% glass-fiber-reinforced nylon 6): high strength, fatigue resistance, high/low temperature resistance, resistant to wiper washer fluid corrosion, good dimensional stability — the mainstream material for washer pump housings.

      PA66-GF: better heat resistance, suitable for high-temperature engine bay environments, higher rigidity, used for higher-demand vehicle pump parts.

      Material selection is determined comprehensively based on product temperature resistance, medium resistance, strength 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 material, dimensional tolerance, and annual output requirements — quotation solution output within 1–2 working days.

      Mold design focuses on glass-fiber material shrinkage, sealing surface, and water pipe connector structures, optimizes venting, and reduces mold wear caused by glass fibers.

      Trial molding tests appearance, dimensional accuracy, and assembly sealing performance; mass production starts after customer confirmation.

Quality Control

      Raw material incoming inspection verifies grade; material certificates available for glass-fiber-reinforced raw materials.

      Dimension verification at each mold processing stage, with focus on key tolerances of sealing surfaces and water pipe connectors.

      Injection molding production implements first article inspection, scheduled in-process patrol inspections, sampling inspection of assembly and sealing performance, monitoring defects such as deformation, short shots, and flash.

      Finished products undergo key inspection of appearance and dimensional 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 glass-fiber-reinforced automotive 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, material, and tolerance 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 dimensions, assembly, and sealing performance, 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 pump housing samples but no drawings?

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

Q: Are glass-fiber-reinforced nylon injection molded products prone to deformation or leakage?

A: The DFM stage optimizes structure and wall thickness, the mold pre-compensates for glass-fiber shrinkage, and injection molding process is optimized to ensure sealing surface flatness and meet assembly sealing requirements.

Q: Can molded material identification marks (PA6-GF30) be made?

A: Yes, the mark is engraved on the mold surface and directly formed on the product during molding.

Q: Does automotive wiper pump 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 and assembly sealing 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 automotive wiper pump housings, custom mold making for glass-fiber-reinforced nylon automotive parts, precision injection molds, sample/drawing-based customization

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