Injection molding machine, also known as injection molding machine or injection machine. It is the main molding equipment for molding thermoplastics or thermosetting plastics into plastic products of various shapes by using plastic molds. The injection molding machine heats the plastic and applies high pressure to the molten plastic to fill the mold cavity.
An injection molding machine is usually composed of an injection system, a mold system, a hydraulic drive system, an electrical control system, a lubrication system, a heating and cooling system, and a safety monitoring system. It is a process of injecting plastic with a good plasticized and molten state (ie, viscous state) into a closed cavity with the help of the thrust of the screw (or plunger), and the product is obtained after solidification and shaping.
For details, you can read this article: Guide to The Working Principle of Injection Molding Machine
Plastic injection molding reliably produces a large number of consistent, high-quality units. There are several other compelling reasons to consider this process:
1. Fast production speed and high efficiency. Injection molding can produce an astonishing number of parts per hour. The speed depends on the complexity and size of the mold, and each cycle time is between 15-120 seconds.
2. Low labor cost. Plastic injection molding is an automated process, and automation helps reduce manufacturing costs because management costs are significantly reduced. Most of these processes are executed by machines and robots, and the only operator can control and manage them.
3. Design flexibility. The mold itself is subjected to extremely high pressure. As a result, the plastic in the mold is pressed tighter and allows a large number of details to be imprinted on the part and to create complex or complex shapes.
4. High-volume production. Thousands of parts can be produced before maintenance tools are needed.
5. Large selection of materials. There are a variety of polymer resins to choose from. Multiple plastic materials can also be used at the same time.
6. Low scrap rate. Compared with traditional manufacturing processes, post-production waste produced by injection molding is very small. However, any unused or discarded plastic can be reground and recycled for future use.
7. Can include insertion. Metal or plastic inserts can be insert molded.
8. Good color control. Plastic parts can be made into any desired color through the use of master batches or composites.
9. Product consistency. Injection molding is a repeatable process; in other words, the second part you produce will be exactly the same as the first, and so on. This is a huge advantage when trying to mass produce high tolerances and part reliability.
10. Reduce finishing requirements. Post-production work is usually rarely required, because the parts usually have a good finished appearance when they are ejected.
11. Increase strength. When plastic injection molding, fillers can be used in the molding material. These fillers reduce the density of the plastic during the molding process and help add greater strength to the finished part.
Plastic injection molding reliably produces parts in a cost-effective manner. It also provides you with a series of material and design options, and produces parts that can reduce the total cost of product production, and reduces the cost of equipment or vehicles by reducing the weight of their use. How to buy an efficient injection molding machine becomes very important.
The following suggestions are listed, and I hope it will be helpful for you to choose an injection molding machine.
1. Choose the right model
According to your own products and raw materials, make the machine model, specification and size, and select the model.
2. Injection volume
Determine the required "injection volume" from the product weight and the number of cavities, and select the appropriate "screw diameter". The number of cavities needs to be considered when calculating the weight of the finished product. For example, the weight of the single product is 10g, and the weight of the finished product is 20g. For the sake of stability, the injection volume is generally required to be more than 1.35 times the weight of the finished product. Within 75% of the shot.
3. Lock
The tonnage of "clamping force" is determined by the product and the plastic. When the raw material is injected into the cavity at high pressure, it will generate force to support the mold, so the clamping device of the injection molding machine must provide enough "clamping force" to prevent the mold from expanding.
4. The mold size is right
From the mold size, determine whether the machine’s "large column inner distance", "mold thickness", and "mold minimum size" are appropriate to ensure that the mold can be placed.
5. The product can be taken out smoothly
Determine whether the "mold opening stroke" and "pallet stroke" are sufficient to obtain the finished product from the mold and finished product.
For details, you can read this article: Do You Need A China Injection Molding Machine?
