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:I put the motorcycle carburetor electronic enrichment valve needle hole is blocked, there is no harm

The manufacturer takes full account of its use in its design. Maybe you're curious. There are many original motorcycles, and we also have them refitted. The same curiosity as you do.

Q:Napping needle valve type hot runner gate part of what is the reason? Do you have any expert answers?

If the material selection is not appropriate, long time production, will cause wear of the valve needle, some suppliers use inferior needle valve, or valve needle without cutting, non professional technology, can easily lead to the valve needle top is not smooth, resulting in gate galling phenomenon, the effect is not good, the final effect the quality of products. I hope I can help you

Q:Hot runner valve needle in the molding, why will retreat?

The following reasons may cause the needle to recedeThe plastic pressure is greater than the cylinder pressure, causing the needle to recede

Q:What's wrong with the sealing ring at the needle valve of the spray gun?

If the sealing ring break not leak does not affect the pressure, spray a shares is because the last time you painted not wash or spray gun, the valve needle sharp deformation, if often run out of the gun after cleaning will cause the spraying effect is not good, long lance clog, preferably after use with clean water that day!

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:Needle valve hot runner Road, needle valve does not move, what are the reasons?

You pull the valve needle, because the needle is too tight, the head of the needle pulled out of it.

Q:What is the hot runner valve needle?

Two. Brief introduction of valve type hot air passage:The valve type hot runner is also a hot runner system which is widely used by all the major international hot runner suppliers. The system opens or closes the gate in a mechanical manner at a predetermined time by using the needle valve under the action of the valve needle control device. This type of hot runner system has many advantages of thermal tip and casting runner systems. If the gate switch time can be artificially controlled, the gate is smooth and smooth, and the hot runner technology application field can be expanded.

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

The remaining part is the fourth stage (also called the end section). For the plastic parts with simple structure and low appearance quality, the three stage spraying process can be adopted.

Q:Why hot runner valve needle Ti

3. heat conductivity is not good - heat insulation (the friction heat in the process is separated from the tool, mold) - tools, molds, thermal resistance better4. corrosion prevention5., high hardness, abrasion resistance, life extension (usually 3~10 times)