Car plastic parts making moulding

In addition, our company has established cooperative relationships with plastic raw material suppliers, printing manufacturers, etc. to ensure the supply of raw materials and printing quality. Through our rich experience and perfect supply chain, our company can provide customers with high-quality customized car plastic parts making moulding products to meet their specific needs. At the same time, we have 10 years of professional foreign trade service experience, understand the foreign trade process, and better serve our customers. For car plastic parts making moulding products, we can make corresponding plastic parts, which is mainly done through injection molds.

The injection molding process of automotive plastic parts represents the highest standard in the plastic processing industry. It has reached the ultimate demands for safety, precision, durability, appearance and batch consistency.

The following is a complete and detailed professional process for injection molding of automotive plastic parts, strictly adhering to the quality management standards of the automotive industry (such as IATF 16949).

The entire process of injection molding for automotive plastic parts

Phase One: Project Initiation and Advanced Quality Planning (APQP)

This is the blueprint to ensure the success of the project, which began long before the mold was made.

Customer requirement input:

Part function, installation position, environmental load (heat resistance, cold resistance, oil resistance, chemical resistance).

Strict dimensional accuracy requirements (usually based on the GD&T drawings of the original equipment manufacturer).

Appearance requirements (different surface treatment standards for side A, Side B and side C).

Safety and regulatory requirements (such as flame retardancy, low volatile organic compounds (VOC)).

Product design Optimization and DFM (Design and Manufacturing Feasibility Analysis) :

Core value link: Mold suppliers closely cooperate with original equipment manufacturers/component suppliers (Tier 1).

Analysis content

Wall thickness optimization: Ensure uniform transition and avoid shrinkage and warping.

Design of reinforcing ribs and installation columns: Ensure structural rigidity and installation strength.

Draft Angle: Ensure that the part can be smoothly removed from the mold.

Parting line (P/L) : Determine the optimal position, taking into account both aesthetics and functionality.

Gate location and type: Determined through mold flow analysis to avoid affecting appearance and generating weak weld lines.

Output: Professional DFM report, approved by the client.

Material selection

Bumpers and instrument panels: PP+ EPDC-T20 (polypropylene + ethylene propylene diene monomer rubber, filled with 20% talcum powder), good impact resistance, low-temperature resistance.

Engine peripheral parts (intake manifold, fan) : nylon (PA66-GF30/35), high strength and high heat resistance.

Interior parts (panels, decorative strips) : ABS, PC/ABS, easy surface treatment, good overall performance.

Headlamp lens: PC (polycarbonate), high transparency, high heat resistance and high impact resistance.

Oil pan: PA6-GF or PPS, high-temperature resistant engine oil with high strength.

Phase Two: Mold Design and Manufacturing - Precision and Durability

Automobile molds are heavy-duty, high-precision and long-life molds.

Moldflow analysis: A mandatory step.

Simulate filling, cooling, shrinkage and warpage, predict and optimize

The locations of weld seams and bubbles.

Pressure-holding effect, reducing shrinkage.

For deformation caused by uneven cooling, optimize the cooling system.

Mold steel: High-strength and highly wear-resistant high-quality steel (such as P20, 718H, S136, etc.) is used, and key components are heat-treated to withstand millions of injection cycles.

Hot runner system: Standard configuration. The needle valve type hot runner is adopted to achieve timing control, balanced filling and reduce waste.

Efficient cooling system: Design conformal cooling waterways to maximize cooling efficiency and ensure stable cycles and consistent dimensions.

Complex action mechanisms: Use multiple sliders and hydraulic cylinders to handle complex internal and external overhangs.

Exhaust system: Precise exhaust grooves are provided at the parting surface, inserts, ejector pins, etc., with a depth of 0.015-0.025mm to prevent charring.

Mold surface treatment: Mirror polishing (such as car lamp lenses), etching (such as leather texture on instrument panels) or fire patterns are carried out as required.

Phase Three: Mold Testing and Process Optimization (OTS Sample Stage)

Verify the mold and formulate the mass production process parameters.

First mold test (T0) : Debug using production materials.

Dimensional verification: Use a three-coordinate measuring machine (CMM) to conduct full-size measurements of the parts, compare them with CAD data, and issue a full-size inspection report.

Appearance verification: The quality engineer of the original equipment manufacturer (OEM) reviews the standard parts under standard light sources.

Function and durability testing

High and low temperature cycling test: Simulating extreme climate conditions.

Vibration test: Simulate road conditions to check structural fatigue.

Chemical reagent test: Test the tolerance to engine oil, cleaning agents, etc.

Process parameter optimization and locking: Through the DOE (Design of Experiments) method, optimize the parameters and record them in the Control Plan.

Phase Four: Mass Production and Strict Process Control (SOP)

Ensure that every day and every batch of products are exactly the same.

Standardized operations

Operators strictly follow the operation instructions (SOP).

The mechanical hand automatically picks up the items and places them on the conveyor belt or custom tooling.

Statistical Process Control (SPC) :

Real-time monitoring and recording of key process parameters (such as injection time, peak pressure, and material temperature).

Conduct frequent spot checks on the key dimensions of the products and draw control charts to detect abnormal trends in advance.

100% automated visual inspection (AOI) : For Class A appearance surface parts, a multi-camera visual system is used for full inspection to automatically remove defective products.

Batch management and traceability

Each part or each box of parts has a traceable batch number, which can be traced back to the production time, equipment, raw material batch, and process parameters. This is a hard requirement in the automotive industry.

Phase Five: Delivery and Continuous Improvement

Outgoing inspection (OQC) : Inspection is carried out in accordance with the sampling plan (AQL).

Packaging and delivery: Use custom packaging that is scratch-resistant and anti-static, and deliver to the production line of the main engine factory on time.

Production Part Approval Procedure (PPAP) : Before mass production, a complete document package including design records, process flow diagrams, control plans, performance test reports, etc. is submitted to the customer for approval.

Continuous improvement: Apply methodologies such as 8D to address issues arising in production and carry out lean production activities to continuously optimize efficiency.

We are a car plastic parts making moulding manufacturer, providing high-quality car plastic parts making moulding manufacturing. As long as you want to customize/develop car plastic parts making moulding products, you can find us. We have professional injection mold design and mature manufacturing technology, providing you with one-stop service, from product design-mold making-product production-product packaging-product transportation, we can help you in every link. As long as you come to us, we will provide you with the ultimate service and satisfy you in terms of product quality, production time, information dialogue, etc.

Plastic Injection Mould making

Plastic molding specifications

Mold design:

Transaction process:

Mold testing:

Product packaging

Factory

We are Custom Plastic Mold factory. Our factory is plastic injection mold maker. we has 17 years of experience in professional custom plastic mold and 10 years of foreign trade experience. We are custom Plastic Mold supplier. We can provide custom Plastic Mold service. Our factory can make the Injection molded plastic parts, and the quality of the products will satisfy you.

We have more than 50 high-end machines and hundreds of engineers and designers. We can provide one-stop service, from product design - mold making - product production - product packaging - transportation. We have a complete production chain. We can meet all your requirements.

Services we provide:

Professional custom mold service, Plastic mold design and manufacturing .plastic product production, product design, mold design, blow mold customization, rotational mold customization, die-casting mold customization. 3D printing services, CNC manufacturing services, product packaging, customized packaging, shipping services.

We always adhere to the principles of quality first and time first. While providing customers with the highest quality products, try to maximize the production efficiency and shorten production time. We are proud to tell every customer that our company has not lost any customer since its establishment.If there is a problem with the product, we will seek a solution actively and take responsibility to the end.

FAQ

Q1: Are you trading company or manufacturer ?

A: We are manufacturers.

Q2. When can I get the quotation?

A: We usually quote within 2 days after we get your inquiry.

If you are very urgent, please call us or tell us in your email so that we can quote for you first.

Q3. How long is the lead-time for mold?

A: It all depends on the products' size and complexity. Normally, the lead time is 25 days.

Q4. I have no 3D drawing, how should I start the new project?

A: You can supply us a molding sample, we will help you finish the 3D drawing design.

Q5. Before shipment, how to make sure the products quality?

A: If you don't come to our factory and also don't have the third party for inspection, we will be as your inspection worker.

We will supply you a video for production process detail include process report, products size structure and surface detail, packing detail and so on.

Q6. What is your payment terms?

A: Mold Payment: 40% deposit by T/T in advance, 30% second mold payment before sending out the first trial samples, 30% mold balance after you agree the final samples.

B:Production Payment: 50% deposit in advance, 50% before sending out the final goods.

Q7: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit for best quality products.

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.