If you are planning to start a mold manufacturing business, you will need to look for a good injection molding machine. New molding machines can be very expensive. If your budget is tight and you still need to start this business anyway, you will need to look for an affordable used injection molding machine. \n
If you are planning to start a mold manufacturing business, you will need to look for a good injection molding machine. New molding machines can be very expensive. If your budget is tight and you still need to start this business anyway, you will need to look for an affordable used injection molding machine.
You will need to choose the used machine carefully if you do not want to be disappointed. You need to find out why the machine is being sold in the first place before you pay for it. If it has any defects, you need to find out if they can be repaired.
There are quite a number of mistakes you will need to steer clear of when purchasing used injection molding machine. One of them is purchasing a machine that is damaged beyond repair. When companies refurbish the injection molding machines, they are usually not keen to ensure that they are working as they are supposed to.
Even if a machine is in good working condition, it may have flaws if it is second hand. So before you part with your money to pay for a certain injection molding machine, you need to check and make sure that it has passed tests and inspections before it is delivered to your factory.
Another mistake you should avoid when purchasing used injection molding machine is choosing the wrong screws. General purpose screws have the advantage of being compatible with most plastic materials, so you may be quick to think that they are the right ones for your needs.
Unfortunately, these types of screws can lower productivity rate in your business if you will only be using a single plastic material. However, if you have more than one type of material to mold, you can go for the general purpose screws. They will be great in that case.
The third mistake you should not make when purchasing used injection molding machine is choosing screws that have very large diameters. Such screws can lead to a number of problems because of material degradation. It is going to take really long for the plastic to heat up, something that can result into material degradation and cause the mold manufacturing process to be very slow.
The force that is required to rotate the screws will also be greater, something that is also going to cause material degradation.
Last but not least, you should not make the mistake of choosing a used injection molding machine that has low clamp tonnage. Where there is inadequate clamp tonnage to the plastic molds, you are going to get products of significantly lower quality.
The problems that you are likely to have include shot shorts, wall section variation, poor surface finish, inconsistent weights and size variation. Another problem with a molding machine that has low clamp tonnage is that wear and tear on the molds and the machine will be very high compared to using a machine that has high clamp tonnage.
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