This series of four sets of precision injection molds - tow hook cover molds, were successfully delivered and developed by JinYi Mold as a supporting supplier for major Japanese automobile brands. They are specially used for the development series of tow hook cover molds on automobile bumpers in automobile exterior parts projects. A total of six independent mold sets have been completed for this series of projects, covering a variety of car model variants, all of which have been verified and put into stable mass production. Its core is to solve the unique technical problems of this type of small exterior parts: how to integrate a strong internal buckle structure under an extremely thin decorative surface, and ensure flush fitting with the bumper and high appearance consistency within a strict tolerance range (±0.03 mm).
Relying on a professional engineering team of more than 500 people and an ISO 9001 quality management system, we provide a full-process engineering solution from design review to mass production handover: early risk avoidance through DFM (Design for Manufacturability) and mold flow analysis (Moldflow); use of high-precision processing equipment to achieve mold manufacturing; and process verification on our 80 to 1600-ton injection molding machines to ensure that the mold has stable mass production performance.
Technical points
Design for Manufacturing and Assembly (DFM):
Our engineers conduct a comprehensive and detailed DFM review of each cover model in the early stages of the project, focusing on analyzing material flow behavior, wall thickness transition, undercut feasibility and ejection reliability. By optimizing the product geometry from the source, we can effectively reduce the number of cycles of later mold repairs and mold trials.
Simulation-driven process:
Use mold flow analysis (Moldflow) technology to pre-verify the filling balance, especially the flow characteristics of the buckle reinforcement area; it can optimize the cooling efficiency of the outer surface of the curved surface; at the same time, identify trapped air areas and prioritize the design of exhaust solutions, thereby significantly improving the stability of the first mold test.
Mold structure development:
Utilizing UG and CATIA for full three-dimensional mold design, a stable slider core-pulling system was successfully developed to ensure the precise and repeated release of functional undercuts; a modular insert design was adopted to adapt to the serialization of vehicle model component changes; and the cooling layout was based on thermal balance as the core goal, rather than simply relying on drilling paths.
Validation and Quality Assurance
Each set of molds has undergone a systematic mold trial verification process to ensure that it can meet the high standards of the automotive industry:
Multi-stage mold trial verification:
Conduct multiple rounds of mold trials from T0 to Tn to comprehensively evaluate appearance quality, dimensional stability and process windows to ensure the most accurate production parameters.
Precision inspection of critical dimensions:
Use a three-dimensional coordinate measuring machine (CMM) to strictly measure the key fitting features of the assembly to ensure that tolerances are met.
Assembly assembly actual assembly test:
The trial sample and the matching bumper are subjected to actual vehicle-level assembly verification to confirm the buckle function, installation strength and smoothness with surrounding components.
Delivery and support
After receiving quality approval, all six mold sets are delivered to customers as mature solutions and have been put into series vehicle production. The delivery content covers complete design data, mold flow analysis reports, mold trial records and maintenance documents, ensuring that customers can seamlessly transition to the mass production stage.
This series of projects demonstrates Jinyi Mold’s capabilities as a comprehensive engineering solutions partner, rather than just a mold manufacturer. We focus on transforming complex automotive exterior parts requirements into stable, precise and mass-produced mold systems.
About Us
Jinyi Mold was established in 1998 and is headquartered in Dongguan, Guangdong. Our professional team provides injection mold and die-casting mold services, providing you support in every aspect from design, manufacturing to final assembly.
Production equipment:
dozens of CNC machining centers (gantry & 5-axis), injection molding machines (80-1600 tons), EDM machines, automation equipment, etc.
Scope of services:
Establish solid partnerships with Europe, Australia and Asia to carry out international export business.
Company production capacity: A 13,000㎡ production base in Maoming (built in 2022), backing an annual turnover surpassing 150 million RMB.
Honors and qualifications:
Possess High-Tech Enterprise Certification, ISO9001:2015 Quality management system certification.
Logistics and freight:
Logistics follows international transportation standards, and packaging is packed in reinforced wooden boxes, filled with PE foam and wrapped in moisture-proof bags.
Marketing: Selina Chan
WhatsApp:+8618969686504
Email:selina@jy-mould.com
Contact us to discuss how we can support your project needs
Please know that when you choose Jinyi Mold, we are not only a supplier, but also a Chinese manufacturing partner with 25 years of experience in mold design, manufacturing, and assembly.
