What Is Automotive Plastic Mold
An automotive injection mold is a specialized tool used to manufacture plastic components for vehicles. It's designed to produce various parts like interior trim, body panels, and dashboard elements through the injection molding process. These molds are made with precision from durable materials to meet the automotive industry's strict standards. They enable efficient mass production of high-quality automotive parts, contributing to the manufacturing of reliable and aesthetically pleasing vehicles.
Advantages of Automotive Plastic Mold
Faster Production
In most cases, injection molded parts can be produced in minutes. Properly maintained automated systems can run for long periods of time, resulting in higher unit yields and faster order fulfillment.
Reduced Labor Costs
Automated systems can take care of manual work, allowing plants to take on more orders with fewer workers. Lower direct labor costs and reductions in related expenses ultimately lead to lower overall project costs.
Complex Shaped Designs
Injection molding allows for the creation of very detailed and complex parts. Additionally, auto plastic injection mold can be used to create parts with internal cavities, such as engine intake manifolds.
Accuracy And Repeatability
Being able to make the same parts and time again is very important to the automotive industry. Automotive manufacturers choose auto parts plastic injection mold to produce parts that meet extremely tight dimensional tolerances.
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Why Choose Us
Our Factory
The company was established in 2010 and grown up to a medium mold making company with 95 employees and a 4500 square meters tool building shop .The average mold design and building experience of our designer and mold maker isover 10 years.
Our Product
Automotive interior and exterior trim, medical mold, home plastic, cosmetic mold, compression mold, Product Application, Injection mold & molding, Overmold & 2K Mold, IML Molds(In-Mold Label), Cube Molds, Stack Mold (T Molds), Insert Tooling, Rubber/ Slicon mould, Compression molds baby plastic molds.
Our Service
We provide excellent solutions for various industries, and taking innovation, expertise and quality control as the backbone of our business core and provide our customers with a comprehensive end-to-end service for any product, engineering or manufacturing need.
Our Certificate
GB/ T9001：2016，ISO 9001：2015， ISO9001.
In the development of the automotive industry, the proportion of plastic parts in automotive parts is very large, and the demand for plastic parts is increasing day by day because plastics have the advantages of beautiful appearance, lightweight and easy processing. Most plastics have a specific gravity of 0.9 to 1.6, and the proportion of glass fiber reinforced composites will not exceed 2.0, while A3 steel is 7.6, brass is 8.4, and aluminum is 2.7. The use of plastic can reduce the weight of parts by about 40%, and the cost can be greatly reduced, which makes plastic the preferred material for automotive light-weighting. Plastic is easy to molding parts with complex shapes.
According to the plastic composition of the plastic, by adding different fillers, plasticizers and hardeners to produce the desired properties of the plastic, changing the mechanical strength and processing properties of the material to meet the requirements of different parts of the car. The plastic consumption of each auto part accounts for 20% of the total vehicle materials and may reach 35% in the future. When the auto company develops a new car, it needs to use hundreds of sets of automotive plastic injection molds, which requires the quality assurance of plastic parts in production, and the quality of plastic parts is determined by the mold.
Applications of Automotive Plastic Mold
01
Interior Components
Manufacturers also produce many automotive interior parts using automotive plastic automotive plastic mold. They include instrumentation components, interior surfaces, dashboard faceplates, door handles, glove compartments, air vents, and more. In addition, they also use automotive plastic mold to produce decorative plastic elements.
02
Exterior Components
Automotive plastic mold is an established process for many exterior automotive components, including fenders, grilles, bumpers, door panels, floor rails, light housings, and more. Splash guards are a fine example for demonstrating the durability of injection molded parts. In addition, the components, which protect the car from road debris and minimize splashing, are often made from rubber or other durable and flexible materials.
03
Under-the-hood Components
Over the past two decades or so, manufacturers have transitioned to plastics for many under-the-hood components that were previously made from metal.
What Are the Types of Automotive Plastic Mold
Injection mold
Injection mold is also called injection mold. The molding process of this mold is characterized by placing the plastic raw materials in the heating barrel of the injection machine. The plastic is heated and melted. Driven by the screw or plunger of the injection machine, it enters the mold cavity through the nozzle and the mold's gating system. The plastic is formed in the mold cavity through heat preservation, pressure maintaining, cooling and solidification. Because the heating and pressurizing device can play a role in stages, injection molding can not only form plastic parts with complex shapes, but also has high production efficiency and good quality. Therefore, injection molding occupies a large proportion in plastic parts molding, and injection molds account for more than half of plastic molding molds. The injection machine is mainly used for the molding of thermoplastics, and has gradually been used for the molding of thermosetting plastics in recent years.
Compression mode
Compression die is also called pressing die or rubber pressing die. The molding process of this mold is characterized by that plastic raw materials are directly added to the open mold cavity, and then the mold is closed. After the plastic is melted under heat and pressure, the cavity is filled with a certain pressure. At this time, the molecular structure of the plastic produced a chemical crosslinking reaction, and gradually hardened. Compression mold is mostly used for thermosetting plastics, and its molded plastic parts are mostly used for the shell of electrical switches and daily necessities.
Transfer mode
The transfer mold is also called the pressure injection mold or the extrusion mold. The molding process of this mold is characterized by adding plastic raw materials into the preheated feeding room, and then applying pressure to the plastic raw materials in the feeding room by the pressure column. The plastic melts under high temperature and high pressure and enters the mold cavity through the mold's gating system, and then the chemical crosslinking reaction takes place to gradually solidify and form. The transfer molding process is mostly used for thermosetting plastics, which can form plastic parts with complex shapes.
Extrusion die
Extrusion die is also called extrusion die. The mould can continuously produce plastics with the same section shape, such as plastic pipes, bars, sheets, etc. The heating and pressurizing device of the extruder is the same as that of the injection machine. Molten plastic will form continuous molded plastic parts through the die head, with high production efficiency.
How Is Automotive Plastic Mold Made
Design
The first step is to create a 3D design of the desired automotive component. This can be done using computer-aided design (CAD) software. The design includes all the necessary details, dimensions, and specifications of the part.
Material Selection
The appropriate material for the mold is chosen based on factors such as the type of automotive component, production volume, desired finish, and cost. Common mold materials include steel, aluminum, and various alloys.
Mold Base Preparation
A mold base is prepared, which serves as the foundation for the mold. It provides support and houses various components like ejector pins, guide pins, and cooling channels. The mold base is usually made from steel and is machined to the required specifications.
Mold Cavity Creation
The mold cavity is formed by cutting or machining the mold base. This process involves using specialized equipment such as CNC milling machines, electrical discharge machines (EDM), or computer numerical control (CNC) lathes to precisely shape the mold cavity according to the design.
Cooling System Installation
Cooling channels or passages are created within the mold to regulate the temperature during the molding process. These channels help in efficient cooling and solidification of the molten material. They are typically created using drills or EDM techniques.
Mold Surface Treatment
The mold surfaces that come into direct contact with the molten material are treated to enhance durability and release properties. Surface treatments may include polishing, texturing, or applying coatings such as chrome plating or nitriding.
Mold Assembly
Various mold components, such as ejector pins, slides, and cores, are installed within the mold base to create a fully functional mold. These components enable the ejection of the molded part from the mold after the molding process.
Testing And Adjustments
Once the mold is assembled, it undergoes testing to ensure proper functioning. Adjustments may be made to achieve the desired part quality, dimensions, and fit. This may involve trial runs and iterative modifications to optimize the mold.
Production
After the mold is tested and approved, it is ready for mass production. The mold is mounted onto an injection molding machine, where molten material, such as plastic or metal, is injected into the mold cavity under high pressure. The material then solidifies, conforming to the shape of the mold cavity.
Why Clean Automotive Plastic Mold
Automotive plastic mold is a widely used process in mass production, therefore it is essential that the process is flawless in order to avoid unnecessary costs incurred from having to redo results or repair and or replace equipment and to ensure the quality of a large number of pieces. Proper lubrication of the mould extraction mechanisms or mould cooling channels free from limescale and rust accumulations, are elements to pay attention to in the maintenance of automotive plastic mold machines. But the perfect cleanliness of the mould figures is perhaps the most important factor to ensure the highest quality of production.
It’ s easy for a small imperfection in the surface of the mould, in contact with the molten polymer material, to create a defect in the final part once it has cooled. For this reason it is essential to rely on cleaning systems that not only carefully remove the residues that can be deposited on the mould figures (especially the smallest and richest ones), but also in order to prevent any damage to the mould. The residues to be removed are usually deposits of release agents and lubricating oils – used to allow the detachment of the artifacts from the walls of the moulds and the correct sliding of the mobile part of the mould. In addition, it is also possible that the moulds must be cleaned of residues left by the gases that are created in the presence of pressure and high temperatures (the so-called ‘flare-ups’).
How to Clean Automotive Plastic Mold
In the production of molded plastic parts, contraction is very important. And we must consider it carefully, as it will reflect on the dimensions of the molded product. The solidity that the contraction can cause, in points of the product with different thicknesses, tensions that can cause cracks, ruptures, etc. Due to dimensional instability, the contraction may not be uniform across the surface of the molded part. Hence, it will cause warping and deformation. This usually happens in parts that have different thicknesses in various parts. They consequently do not undergo uniform contraction.
Insert of metal parts, where the contraction of metal is different from that of plastic. This, when cooled, can contract two to five times more than metals. Consequently, the force of this contraction acting on the metal. It has greater mechanical resistance, may cause the molded plastic partsto break. The dimensional tolerances obtained according to the plastics contraction coefficient are not always constant.
Furthermore, they depend on several factors, such as: inconsistency of the properties of the raw materials used in their preparation, etc. The average tolerances adopted to determine the dimensions of a part must not be less than a given limit. When creating injection projects, we must pay attention to many other characteristics of creating this tool. Because in addition to the physical components that make up the assembly, many other data and techniques must be used in the projects.
Closing panels that block unpleasant mechanical parts. Molded plastic parts, such as door panels, for easy assembly. Smooth and painted components, such as bumper covers and interior finishes. Soft-touch plastics for attractive interior finish. Textured molded plastic parts. Plastic components can get dirty, as can the rest of your vehicle. It may be dust, oils or even food or drinks that remain in the plastic. Plastic may need to be treated differently from other parts, depending on its composition and finish.
The interior of your car is significantly more protected from the environment than the exterior. Once a molded plastic parts is broken, you will not be able to restore it to its previous condition. You can, however, treat your interior plastic to prevent most cracks and deterioration while you clean your car’s interior plastic. Look for a high quality cleaning product that also conditions the plastic.
Car wipers that leave an oily shine may look good initially, but they collect dust and dirt quickly. Use a cleaning product that does not have an oily feeling or shine after use. clean the dusty surfaces. Use a lint-free cloth to clean all the inside of your car. You are looking to remove most of the dust and dirt, so that the end result is cleaner and scratch-free. If the surfaces are very dirty, you can use a damp cloth to absorb more dirt initially. Spray the plastic cleaner over a foam applicator. If you spray directly on parts like the dashboard or the door panel, the fog will settle on the windows, making you work harder to clean the car later. Place the applicator moist with the cleaner. Clean the inner plastic with the cushioned applicator. Work with one area at a time. If you are cleaning the panel, clean it thoroughly with the cleaner and proceed to the next step. Clean the molded plastic parts trim with a lint-free cloth. This will remove most of the moisture and leave a clean, dust-free surface. Repeat for each plastic area.
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