Precision Plastic Injection Molds for Lighting Fixture Housings | Custom Lighting Manufacturing Solutions - Qingdao Xinlongji
Established in 2012, Qingdao Xinlongji Metal Manufacturing Co., Ltd. is situated in Qingdao, Shandong Province—a crucial industrial and port city in China. As a professional integrated enterprise of industry and trade, we integrate R&D, production, and sales, dedicated to providing global customers with one-stop manufacturing solutions from precision plastic injection mold design and fabrication (focusing on lighting fixture housings) to finished components. With over a decade of in-depth experience in custom injection mold manufacturing for lighting products, we have gained trust from international clients through our professional technical strength, robust production capacity, rigorous quality management system, and comprehensive service capabilities.
Core Product: Custom Plastic Injection Molds for Lighting Fixture Housings
We specialize in the customized design and manufacturing of high-precision plastic injection molds for lighting fixture housings, which are core components widely used in LED street lights, indoor downlights, commercial spotlights, and automotive lighting systems. Our core function is to provide durable, high-precision injection molds that realize one-time integral forming of lighting fixture housings, ensuring consistent dimensional accuracy, excellent surface finish, and tight sealing performance of the molded products—key requirements for lighting products to resist dust, water, and ensure long-term stable operation. Backed by a professional technical team of 35+ engineers and technicians, we leverage advanced CAD/CAM/CAE software (UG, AutoCAD, SolidWorks) to conduct in-depth simulation of the injection molding process, optimizing mold gate design, cooling system layout, and cavity structure to avoid defects such as shrinkage, warpage, and air bubbles in lighting housings. Our molds are tailored to match the material characteristics of lighting housings (e.g., PC, ABS, PMMA) and mass production needs, featuring the advantages of short cycle time, high yield, and long service life.
Production Process & Supporting Technologies
The production of our plastic injection molds for lighting fixture housings follows a strict standardized workflow to ensure quality and efficiency: 1. Demand Analysis & Design (confirm client’s lighting housing specifications, material requirements, and production capacity needs; conduct 3D mold modeling and injection process simulation); 2. Raw Material Preparation (select high-quality mold steel (e.g., S136, H13) suitable for lighting mold manufacturing; implement precision cutting via CNC flame cutting equipment); 3. Precision Machining (carry out CNC milling, grinding, EDM, wire cutting, and high-speed machining to ensure the machining accuracy of mold cores and cavities); 4. Assembly & Debugging (skilled technicians perform manual assembly, install hot runner systems (if needed), and conduct multiple rounds of debugging and trial injection to optimize molding parameters); 5. Quality Inspection & Delivery (use coordinate measuring machines (CMM) and other precision testing equipment to inspect mold dimensions; conduct trial injection tests to verify product appearance and performance). In addition to specialized injection molds for lighting housings, we also provide supporting processes such as plastic injection molding, surface treatment (painting, electroplating, silk-screen printing), and finished lighting assembly, achieving full-chain service for clients.
Common Problems & Solutions in Lighting Fixture Housing Injection Mold Production
• Problem 1: Warpage and deformation of lighting fixture housings - Solution: Optimize the mold cooling system layout via CAE simulation to ensure uniform cooling of the housing; adjust the injection molding parameters (injection speed, pressure, holding time) to reduce internal stress of the plastic part; select mold steel with stable thermal conductivity and conduct proper heat treatment to ensure mold dimensional stability.
• Problem 2: Air bubbles and shrinkage marks on the housing surface - Solution: Improve the mold gate and runner design to ensure smooth plastic flow; increase the injection pressure and holding pressure appropriately; pre-dry the plastic raw materials to remove moisture; optimize the mold cavity exhaust system to discharge trapped air.
• Problem 3: Poor surface finish of the housing (scratch, fogging) - Solution: Polish the mold core and cavity surfaces to a high mirror finish (Ra ≤ 0.02μm); use wear-resistant and corrosion-resistant mold steel; select high-quality plastic raw materials and add appropriate additives to improve material fluidity; clean the mold regularly during production to avoid debris adhesion.
Frequently Asked Questions (FAQ)
• Q1: What types of lighting fixture housings can your injection molds produce? - A1: Our molds can produce various lighting housings, including LED street light housings, downlight housings, spotlight housings, panel light housings, and automotive lighting housings. We support customization based on client-specific drawings and requirements.
• Q2: What is the lead time for custom lighting fixture housing injection molds? - A2: The lead time varies by mold complexity: sample molds take 7-15 working days, mass production molds take 20-45 working days, and urgent orders can be completed in 5-10 working days with an additional fee. We will provide a detailed delivery schedule after confirming the order.
• Q3: Do you provide quality assurance for your injection molds? - A3: Yes, we provide a 12-month quality guarantee for all injection molds. During the guarantee period, if there are quality problems caused by mold design or manufacturing, we will provide free repair or replacement services. We also offer lifelong technical support.
• Q4: Can you help with the injection molding production of finished lighting housings? - A4: Yes, we have a professional injection molding production line. We can provide one-stop services from mold design, fabrication to finished product injection molding and assembly, which can save your communication and management costs.
• Q5: What certifications do your products and factory have? - A5: Our factory is certified by ISO9001:2015 and IATF16949 (automotive industry quality management system). Our injection molds and finished products comply with international quality standards, and we can provide relevant test reports according to client requirements.
Product Classification & Technical Specifications
1. Product Classification by Industry, Material & Part Type
Application Industry | Processed Materials | Part Type | Remarks |
Outdoor Lighting | PC, ABS, PC/ABS alloy (weather-resistant, UV-resistant) | LED street light housing, garden light housing, floodlight housing | High requirement for water resistance (IP65+), weather resistance, and impact resistance |
Indoor Lighting | PMMA, PC, ABS (high transparency, flame-retardant) | Downlight housing, panel light housing, ceiling light housing | High surface finish requirement, good light transmittance, and environmental protection |
Automotive Lighting | PC, ABS, PMMA (heat-resistant, impact-resistant) | Headlight housing, taillight housing, fog light housing | Strict precision requirement (±0.01mm), heat resistance (-40℃~120℃) |
Commercial Lighting | Aluminum-plastic composite, PC, ABS | Spotlight housing, track light housing, stage light housing | Lightweight, corrosion-resistant, and customizable appearance |
2. Technical Specification Parameters
Parameter Item | Specification | Remarks |
Processing Precision | Key dimensions: ±0.005mm; General dimensions: ±0.02mm | Inspected by CMM to ensure the assembly accuracy of lighting housings |
Material Range | PC, ABS, PC/ABS alloy, PMMA, PP, PE, nylon; Mold steel: S136, H13, P20 | Support custom processing of special materials (weather-resistant, flame-retardant, high-transparency) |
Surface Treatment Options | Painting (matte, glossy), electroplating, silk-screen printing, laser engraving, UV coating, mirror polishing | Tailored to client’s aesthetic and functional requirements (anti-scratch, anti-yellowing) |
Minimum/Maximum Size | Minimum: 5mm × 5mm × 0.5mm; Maximum: 1800mm × 1200mm × 500mm | Covers small precision lighting components and large outdoor lighting housings |
Production Cycle | Sample die: 7-15 working days; Mass production die: 20-45 working days; Urgent order: 5-10 working days (available with additional fee) | Depends on mold complexity (number of cavities, hot runner system) and order quantity |
Our Core Competitiveness
• 10+ Years of Professional Experience: Founded in 2012, we have focused on plastic injection mold manufacturing for lighting products, serving more than 200 clients from over 40 countries, including Europe, North America, and Southeast Asia,.
• Professional Technical Team: A team of 100+ engineers and technicians with an average of 8+ years of industry experience, proficient in the design and optimization of lighting fixture housing injection molds, and capable of solving complex technical problems such as high-transparency housing molding and weather-resistant structure design.
• Strong Production Capacity: Our factory covers an area of 12,000 square meters, equipped with 100+ sets of advanced production and testing equipment (CNC milling machines, EDM machines, wire cutting machines, CMM, high-speed injection molding machines, etc.), with an annual production capacity of 200+ sets of injection molds.
• Strict Quality Management System: Certified by ISO9001:2015 and IATF16949, we implement full-process quality control from raw material incoming inspection to finished product delivery, including mold design review, process inspection, and final product testing, ensuring product stability and reliability.
• Improved Supply Chain: Cooperate with reliable domestic raw material suppliers to ensure stable supply and consistent quality of mold steel and plastic materials; integrate upstream and downstream resources to realize cost optimization and timely delivery.
• Global Service Capabilities: Cooperate with well-known international logistics companies (Maersk, COSCO) to provide efficient and safe global shipping services; offer 24-hour online technical support and a 12-month quality guarantee, solving after-sales problems promptly for clients around the world.
Customer Case: Lighting Fixture Housing Injection Mold Project for European Client
Our client is a leading lighting manufacturer in the Netherlands, specializing in the production of high-end outdoor LED street lights. They encountered problems with their original injection molds for street light housings, including serious warpage (deformation amount exceeding 0.5mm) which led to poor sealing performance, and low production efficiency, resulting in failure to meet market demand. In 2023, they partnered with us to customize a set of high-precision injection molds for their new model of IP67-rated street light housings.
Our technical team first conducted a detailed analysis of the client’s street light housing drawings and performance requirements (weather resistance, water resistance, impact resistance). We used UG software to build a 3D model of the injection mold and simulated the injection molding process, optimizing the mold’s cooling system by adding 16 cooling channels to ensure uniform cooling of the housing. We selected S136 mold steel (high corrosion resistance, high polishability) and implemented a strict heat treatment process to enhance the mold’s service life. During the debugging stage, we adjusted the injection parameters (injection speed, holding pressure, cooling time) for multiple times and conducted a 72-hour continuous trial injection test to verify the mold’s stability.
The final delivered injection molds achieved excellent results: the warpage of the street light housings was controlled within 0.1mm, fully meeting the IP67 sealing requirement; the mold service life was guaranteed to be more than 1 million shots. The client highly recognized our product quality and technical service, and signed a long-term cooperation agreement with us.
Why Choose Qingdao Xinlongji?
1. Professional Customization for Lighting Industry: We focus on the R&D and manufacturing of injection molds for lighting fixture housings, with rich experience in solving industry-specific technical problems (e.g., weather resistance, light transmittance, sealing performance).
2. One-Stop Integrated Service: From mold design, fabrication to finished product injection molding and assembly, we provide a full range of services, reducing your communication costs and shortening the production cycle.
3. Proven Technical Strength: Our professional technical team and advanced simulation technology ensure that we can deliver high-precision, high-stability molds that meet your strict quality requirements.
4. Reliable Quality Assurance: International quality system certification and full-process quality control ensure that our products comply with global industry standards, minimizing your production risks.
5. Efficient Global Support: Relying on the geographical advantage of Qingdao Port and cooperative logistics partners, we can deliver products to global clients in a timely manner; our 24-hour technical support team solves your after-sales worries.
Qingdao Xinlongji Metal Manufacturing Co., Ltd. is committed to becoming a trusted partner in the global lighting fixture housing injection mold industry. We look forward to cooperating with you to create greater value! For more information about our products and services, please feel free to contact us.
