Air Poppet Valve

Air Poppet valve is also called Air tip, Air valve, pneumatic thimble, in a deep, closed vacuum state, through the Air Poppet Valve to control the entry of Air, so that there is Air between the product and the mold core, to avoid negative pressure caused by vacuum, so that the product is easier to demould. Air Poppet Valve has high precision, simple installation, no space, and great function. It is the best product to improve the ejection device at present. Its principle is the use of air valve control, to the principle of air diffusion, so that the product in an instant from the mold, to achieve the effect of automation. In the production of such as disposable lunch boxes, milk tea cups and other thin-wall non-perforated plastic parts, the use effect is good. Compared to the thimble, the Air Poppet valve controls the gas through an Air valve, allowing the product to instantly drop off without harm to the product. Air Poppet valve can be used for faster ejection than thimble ejection for automatic equipment requiring fast ejection. When the product surface area is large and it is not easy to fall off, the force is more uniform and the effect is better when the Air Poppet valve is used to top out the plastic parts. The mould with Air Poppet valve structure does not need to use other ejection structure, which can make the design and installation of the mould relatively simple, does not need to take up space, and has a large function. It is the best product for the ejection device of thin-wall mould at present.

Types of Air poppet valve:

At present, the products of the following companies are commonly used in the market. Among them, DME’s VA series, including VA01D (D8), VA02D (D12), VA03D (D18), (with DME only three products, THREEUP can produce more Many specifications, diameter from D8 to D25), VA series from CUMSA, Z491 and Z4911 series from HASCO. MISUMI does not have any good product recommendations on this product, but PUNCH, another mold accessories company also in Japan, has an Air poppet valve that has been adopted by many Japanese companies. The smallest diameter of Air poppet valve can be 5mm, the largest diameter can be 30mm, and the height of Air poppet valve can reach 50mm. Air poppet valve is generally composed of shell, ejector rod, spring and elastic cylindrical pin. China market Generally, ordinary Air poppet valves are used more frequently. North American companies often use DME’s VA, while most European companies often use CUMSA’s VA and HASCO’s Air poppet valve with the code Z491. PUNCH’s Air poppet valve is currently not popular, and very few customers use it. THREEUP can currently produce all the above models and specifications of Air poppet valve, please feel free to contact us if you need it.

Common failures of Air poppet valve:

Plastic products have large burrs. The burrs need to be analyzed in detail. If the burrs between the Air poppet valve and the mold mounting hole are large, this situation may be due to insufficient opening precision of the Air poppet valve, or insufficient outer diameter precision of the Air poppet valve, resulting in the installation of the Air poppet valve. There is a gap between the shell of the air poppet valve and the mold. If the burrs between the ejection surface of the Air poppet valve and the Air poppet valve are large, this situation is caused by the insufficient ejection accuracy of the Air poppet valve itself, and the unevenness of the ejection surface and the Air poppet valve surface. In addition, if the concentricity of the core of the Air poppet valve is not well controlled, the pin may rotate slightly during the rapid opening and closing process, resulting in unevenness between the ejector surface and the surface of the Air poppet valve. This will not only easily form burrs, but also easily Glue makes it difficult to close the Air poppet valve.

The Air poppet valve is not easy to close after being used for a period of time, causing glue to enter inside. Air poppet valve is not easy to close. In most cases, impurities have entered the Air poppet valve, such as processed iron scraps, debris, etc., which are stuck on the spring or supporting surface, causing the Air poppet valve to not close tightly. Once the glue is inserted, the Air poppet valve It is not easy to close. There are generally two situations for the generation of debris. First, the debris is not cleaned up during the processing of the Air poppet valve. Second, in the process of die hole processing, the fine iron filings inside the cavity were not cleaned up. The third situation is the one mentioned above, which is caused by the displacement of the ejector pin.

After using the Air poppet valve for a period of time, the normal air pressure cannot be ejected, causing it to be stuck. Air poppet valve jamming is mainly due to insufficient processing precision of Air poppet valve. The ejector pin and the Air poppet valve body are not tightly matched. The pin quickly impacts with the Air poppet valve body under high pressure. With the impact of time, the pin and the body become tighter and tighter, and finally the pin cannot be ejected.

In view of the above common failures of Air poppet valve, THREEUP’s newly developed VAN-type Air poppet valve can better solve this problem. VAN Air poppet valve is improved on the basis of CUMSA’s VA Air poppet valve. At present, both the processing accuracy and the design concept exceed the existing VA Air poppet valve.

1. In terms of processing accuracy, the VAN Air poppet valve can guarantee a tolerance of 0.001mm, to ensure that there will be no burrs, to ensure that the ejector core and the shell are perfectly tight, and will not cause jamming. In addition to the inclination angle of the pin, after dozens of experiments, we finally found the best bevel angle of the core and the shell, which is not easy to jam, but also guarantees the ejection effect.
2. The inner core is specially designed so that the core will not rotate inside, which avoids the unevenness of the ejector surface due to the rotation of the core.
3. The gasket is specially designed with a filter inside the gasket to keep impurities out of the Air poppet valve.

Installation points: The precision of the Air poppet valve is relatively high, which requires that the Air poppet valve must pay attention to the following points during use:

First, the accuracy of the mounting holes. If the mounting hole is too large, it is easy to form a gap and cause burrs. If the mounting hole is too small, the Air poppet valve is easily squeezed, which easily causes the Air poppet valve pin to fail to be ejected.

Second, the cleaning of the mounting hole cavity. Insufficient cleaning, if iron filings enter the inside of the Air poppet valve, it will easily cause the Air poppet valve to fail to close.

Third, refuse to install violently. Some operators directly use a hammer to knock the Air poppet valve into the mold during installation. This situation can easily damage the internal structure of the Air poppet valve. The correct method is to put on a soft pad and then slowly tap it in. We recommend installing THREEUP’s gasket with a filter screen during installation, so that it can not only filter out impurities but also facilitate maintenance.

Installation and precautions of Air poppet valve:

1. Before installing the Air poppet valve, check the hole diameter of the installation hole, and the hole diameter tolerance is H7.
2. Before installing the Air poppet valve, clean the iron filings and impurities in the vent hole of the mold.
3. When installing, you need to use a bakelite hammer or a rubber wooden board on the front to gently knock the Air poppet valve in. It is recommended to use our special gaskets. When removing, the force acts on the gasket or the air poppet valve’s periphery. Do not directly knock the core of the Air poppet valve, as this will cause damage to the core.
4. If the surface of the Air poppet valve needs to be processed after installation, the air poppet valve should be tested for air pressure after processing, and the air pressure value is 0.8Mpa.
5. For multiple air poppet valves that need to be installed in one vent, the inner diameter of the main vent should be more than 2 times the diameter of the sub vent to ensure sufficient pressure, or a small air storage tank can be installed outside to ensure stable air pressure.
6. After installing multiple Air poppet valves in the same vent, the air pressure should be checked one by one, and the air pressure value should not be less than 0.8Mpa.
7. After the air pressure detection of a single Air poppet valve is completed, go through all the branch pores and fill in the air pressure to check whether all the Air poppet valves can be ejected normally. Only after all the Air poppet valves are qualified can the mold be closed for production.

FAQ:

1. What is the material used for the mold Air poppet valve?

The Air poppet valve of THREEUP company is generally made of stainless steel SUS420, the hardness is generally HRC48-52, but HASCO’s model Z491, the air poppet valve shell is made of brass, and the hardness is HRC35-40. But they have another model. For the Air poppet valve of Z4911, both the shell and the core are made of stainless steel.

        2. What specifications of Air poppet valve do you provide?

We can produce all the mainstream Air poppet valve specifications in the current market, and we can also customize the production of Air poppet valve according to your needs. We also have Air poppet valve sizes in English specifications.

3. How is the quality of your Air poppet valve? Is it trustworthy?

We have more than 20 years of experience in the production of Air poppet valve and more than ten years of experience in OEM for European companies. Our Air poppet valve has been used by hundreds of customers in dozens of countries around the world and is trustworthy.

4. What are the main aspects to evaluate the performance of the mold Air poppet valve?

The main performance indicators that affect the mold Air poppet valve are the service life and failure rate of the Air poppet valve.

5. How does your company solve these common problems of mold Air poppet valve?

Our company has always paid attention to listening to customers’ feedback needs, and constantly made improvements to the structure and material of the Air poppet valve, increased precision, and adjusted the design of the Air poppet valve to make it have a longer service life and a lower failure rate. Many customers’ recognition and praise.

6. Do you have any stocks? How long is the lead time of the mold Air poppet valve?

We have stocks of commonly used specifications and sizes. Generally, they can be delivered within 3 days. However, some special specifications and sizes require scheduled production. The production cycle is about one week. Large quantities of orders require special communication with us. We need to The order quantity determines the production time.

7. What is the minimum order quantity for the mold Air poppet valve?

We do not have a minimum order quantity requirement, but if you purchase enough quantity, you will get a better price.

8. How to get the quotation of Air poppet valve?

You can initiate an inquiry on this page, or send an email to tao@szthreeup.com for inquiries, we ship by express delivery such as DHL or TNT

9. I am using the Air poppet valve model of xx company. Can my Air poppet valve be used on the original mold?

Our company can produce the Air poppet valve model you need. You only need to tell us the Air poppet valve model you are using, and we will give you the same products. They can perfectly replace your previous products. There is no need to make any modifications to the mold.

10. What kind of equipment do you mainly produce Air poppet valve? What is your output?

The production of Air poppet valves requires automatic lathes, grinders, etc., and our company has dozens of the above-mentioned equipment, which can produce 3,000 various types of Air poppet valves every day.