So, you or your company needs a vacuum pump. What kind of pump do you need? What is the right size pump for your application? How are you supposed to know?
The vacuum forming helps tie the individual pieces together and make one mold out of many pieces that can easily be replicated. From there plaster, concrete, etc. can be cast into the plastic form.
Composite molds are a lower cost alternative to cast or machined aluminium molds. Composite molds are typically made from filled resins that start as a liquid and harden with time.
I will briefly touch on some of the advantages and disadvantages associated with each vacuum technology we deal with. This should give you a better understanding of where to begin your search.
Aluminium molds can be male or female in nature, and can also be used in pressure forming applications. The main drawback with this type of mold is the cost.
Water vapors may not be an issue if operating a water-sealed vacuum pump. If the vacuum pump is oil-sealed, we certainly need to consider the damages water vapor can cause.
What level of pressure does this vacuum pump need to pull? This question is easier to answer if there is an existing pump currently operating that needs replacement. We simply look at the level of vacuum it is pulling right now.
g. guide rails for a tray that needs to slide onto shelving. It can also cut sidewalls of a different depth than the pockets—something which cannot be done with roller or press cutting.[6] References[edit]
With that being said, there are two more very important pieces of information that will need to be answered before we can accurately size your pump.
Um bom material de modo a termoformagem deve deter a habilidade de ser estampado em 1 molde isento rasgar ou afinar excessivamente, ser mole quando aquecido a ponto de moldar-se aos Pormenores da cavidade desprovido chegar próximo à temperatura do fusão.
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It is often used for punching very small finished items out of a plastic sheet, rather than punching features into a product. Press cutting can't be used to make features in the sides of vacuum formings.
If water is not a concern, but noise and vibration levels are, we may actually lean towards the liquid ring as a good fit for your application.
What kind of pump speed/capacity is needed? When referencing pump speed/capacity we’re asking what volume of gas needs to be removed in a certain amount of time. Usually, we express this in CFM (cubic feet per minute). This question can be tricky, especially if your operation is expanding in the future.