What does a low pressure injection molding machine produce, and what is the role of pressure holding

The low-pressure injection molding process is a packaging process method that injects the encapsulation material into the mold and quickly cures and molds (5 50 seconds) with a very low injection pressure to achieve insulation, temperature resistance, impact resistance, vibration damping, moisture resistance, waterproof, dustproof, chemical corrosion resistance and other effects. Henkel Technologies offers high-performance Technomelt series specialty hot melt adhesives for this process, which are mainly used in the packaging and protection of delicate and sensitive electronic components, including: printed circuit boards (PCBs), automotive electronics, mobile phone batteries, wiring harnesses, waterproof connectors, sensors, micro switches, inductors, antennas, ring cables, etc.

The injection pressure is extremely low, the components are not damaged, and the defective rate is very low.

In response to the defect of excessive pressure in the traditional injection molding process, the special compounds of the Technomelt series only require very little pressure after melting to flow into a small mold space, so that the fragile components that need to be encapsulated will not be damaged, and the scrap rate will be greatly reduced.

A low-pressure injection molding machine is an injection molding equipment that uses extremely low pressure ( to inject and encapsulate more sensitive electronic components. The field of injection molding includes: LED modules, PCB boards, automotive sensors, automotive wiring harnesses, etc., mobile phone batteries are the first field developed by the company in China, and are currently successfully used in South China.

The low-pressure injection molding machine is specialized in the production of batteries. For example, mobile phone batteries are one of them.

Low-pressure injection molding is widely used in the encapsulation and protection of delicate and sensitive electronic components. Its application fields include: automotive electronics, medical electronics, IT industry, new energy industry, energy-saving industry and other industries required in the coupling, sensors, micro switches, wiring harnesses, flexible circuit boards, PCB and other products encapsulation.

The production of those must not have too much internal stress (because the internal stress is easy to produce cracks inside the plastic).

Some electronics with precision.

Production of plastic toys, plastic utensils and so on.

The role of pressure holding in the injection molding machine is:

1. Pressure holding can control the deformation and size of the product.

2. When the product is melted, cooled, solidified and shrinked, maintain a pressure, continue to inject melt to fill the shrinkage space, reduce or avoid the occurrence of dent rolling.

3. Due to the reduction of the plastic temperature and the internal stress inside, the plastic in the mold cavity will reflux, if there is no pressure holding to eliminate the pressure and remove the pressure, the product will shrink or not satiety.

Summary. Hello, the high pressure of the injection molding machine is the complete straightening of the mold tightening and flexion arm, which is also called the clamping force of the injection molding grade, the tonnage of the injection molding machine is the clamping force, and the low pressure is the front section of the high pressure of the mold to prevent something in the mold from pressing the mold.

Hello, the high pressure of the injection molding machine is the complete straightening of the mold tightening and flexion arm, which is also called the clamping force of the injection molding grade, the tonnage of the injection molding machine is the clamping force, and the low pressure is the front section of the high-pressure stool to prevent the mold from being opened and there is nothing in the mold to prevent the mold.

How the high pressure data and the low pressure data are calculated.

Look at the specific model and power.

Open low, open fast, open slow, unload, what do they mean.

The pressure represents the resistance of the hydraulic oil flow, the greater the resistance, the higher the pressure you set, the speed is the speed of the hydraulic oil flow, you set it to 10, it flows very slowly, and when the dust is set to 99, it flows very quickly. It's even easier to set the position to 88, if you set the pressure to 88, the speed to 66, and the position to 30, then the machine will run at 88 pressure and 66 speed until you get to 30, and it's going to change the setting for the next stage, and the next setting for a delay is also early or you can enter it. The places they control are:

Die opening and closing strokes, ejection strokes, and injection strokes.

Hello, according to your problem description, the solutions provided to you by Hepi here are as follows: high and low pressure setting clamping form of injection molding machine: fast --- slow --- low pressure --- high pressure injection molding machine due to different brands of different clamping structures, but also similar; For example, before adjusting the low pressure, adjust the high pressure pressure and high pressure position, such as setting ---the high pressure to 70bar, adjusting the mold thickness--- adjusting the mold thickness returning the high pressure position to zero--- looking at the clamping position data--- for example, then set it to add a position--- the high pressure setting is completed--- the low pressure position setting is taken from the thickness of the product + about --- cm, the low pressure pressure starts from the pressure of 0, and the clamping action --- can not be closed +1 low-pressure pressure to increase (it is recommended not to exceed the low-pressure pressure of 8, except for special molds) - in the next round of the mold to see the low-pressure time of the clamping of the mold to call the difference--- if it is seconds, on this basis to add the second time, that is, 1 second of low-pressure time.

Low-pressure injection molding and high-pressure injection molding are two different plastic injection molding processing technologies. Low-pressure injection molding usually means that in the injection molding process, the working pressure of the injection molding machine is low, generally between 10-20MPa; The high-pressure injection molding corresponds to a greater working pressure, generally between 30-40MPa. The main difference between them is the fluidity of the plastic during the injection molding process, the ashwagandha and the molding effect.

Low-pressure injection molding has the following advantages: the molding speed is fast, suitable for simple shape products, can save mold costs, but the injection volume can not be too large, and the molding quality is difficult to control. High-pressure injection molding can better control the temperature, pressure and other parameters in the injection molding process, making the molding quality more accurate, and suitable for complex shapes and large-scale production products.

However, the disadvantage is that the production cost is relatively high. Therefore, when choosing low-pressure injection molding or high-pressure injection molding, we should decide which injection molding processing technology to use according to the production needs and the characteristics of the product.

Low-pressure material-slip injection molding is made of lower injection pressure molding, and the injection clamping force is generally less than 5t, which we can call low-pressure injection molding. Above 5t, we can call it conventional pressure injection molding or high-pressure injection molding.

The reason why there is a difference between low-pressure injection molding and high-pressure injection molding is that the different products applied determine the different injection molding processes.

The injection temperature of the low-pressure injection molding process is relatively low, generally in the range of 180-240, and the high-pressure injection molding is generally in the range of 230-300, so the high-pressure injection molding can not inject sensitive components, and the low-pressure injection molding is very suitable for replacing the traditional potting as the packaging of electronic components.

Why low-pressure injection molding has advantages:

First of all, low-pressure injection molding is different from the material used in traditional injection molding machines. The viscosity of the hot melt adhesive for low-pressure injection molding is very low, the material has high fluidity after hot melting, and does not need to be extruded through the screw, as long as it is heated and melted by the rubber cylinder and injected through the gear pump, it can be made to flow into the mold with little space with very little pressure, and then cooled and molded. Therefore, the low-pressure injection molding machine does not have a screw device, and the glue is injected through the gear pump and hose and glue gun.

This has a very good protection effect for some fragile components, which greatly improves the work efficiency. <>