Q:A Kelon old air conditioning, fluorine mouth, there is no needle, how to measure the pressure and fluorine ah? No thimble tube screw, no response, how should I test? Thank you

Stop valve, valve, loosen a little bit on the deal!

Q:Hot runner system is not exactly the valve matrix how to do?

3: check aprons are damaged. 4: open the hot runner, check whether the valve needle and valve sleeve between the seepage. Wait。 It's best to see the model,

Q:How can I see a needle valve in plastic products?

Do good needle type mold, the glue inlet port is generally lower than the product surface, in front with no obvious signs of the case can be used to identify the surface color, into the plastic needle valve mouth is used with cooling gel, ambient temperature will be higher than the nearby, slightly shiny.The needle tip of the valve will also have obvious marks, because the high temperature and the entrance of the glue hole will always be more or less bright or rough than that of the die steel.

Q:Mold glue is how the air valve needle

The hot plate of the needle valve has operation instructions on it. If it is not clear for a long time, see if the hot runner leads out the interface. Is there any mark gas IN/OUT?If not, (usually two groups, only one group and one group)

Q:Is the injection pressure tight after the valve pin closes?

In the process of injection molding, solution and shrinkage because of cooling, but because the screw to move slowly forward, so that the material in the tube to melt into the cavity, to supplement the needs of shrinkage, called pressure. It means to prevent product shrinkage, with pressure if production is stable. The pressure can also adjust the product size, without weld line

Q:Hot runner valve needle broken inside how to do?

Then heat the drain plate and remove the needle from the distributor with the needle sleeve. Then the muskets firing valve needle sleeve, the glue burn clean, it can take out the needle valve. Hope to help you.

Q:Mold valve needle and valve relationship, the gas will be sealed small plastic valve will have a small possibility?

2. cylinders are not enough;3. excessive amounts of paint;

Q:Working principle of needle valve type oiling cup

The upper part and sideways to erect it can put the valve open to the maximum.The working principle is very simple, there are like you a look to understand, D is part of a cup, the cup is the top cover, the middle from the top to the bottom through a needle valve, the cup cover is bending spring, pressure spring pressure to the middle of the adjusting nut to adjust the adjusting nut to the top of the needle valve at the lower end of the oil outlet is opened, and the upper part of the right to erect it can put the valve open to the maximum.

Q:After the needle valve sealing, how to solve the cold material?

The runner is the first and the runner is second, and the product is about third when it reaches 90%.

Q:How long is the needle length of the needle valve?

This depends on the size of your mold, the thickness of the cylinder height, the thickness of the flow plate, and the length of the hot mouth, as well as the needle valve to reach the location of the product and so on, to be integrated calculation. There is no fixed size