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Add:Aoan Industrial
Park, Huangyan County, Taizhou City, ZheJiang Province, China. |
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Bucket Mould |
PageHome
> Bucket Mould |
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Bucket Mould |
| Among so many plastic
moulds we made before, moulds for plastic warter pail,paint bucket
and mop buckt is one of the most products we made before. |
Why Many factory make these kinds mould are failed? |
the pail mould or the
bucket mould's core eccentric causing the pail wall
thickness not even and the pail out of center. |
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A. How to avoid the bucket mould core eccentric, caused the bucket
wall thickness not even? |
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 YOSION
mould have rich experience in it.
1. if the cooling is not equal in the different area of the pail mould
core and cavity, this will cause the following difference of the melted
material, the more hot area flow ance will be bigger and the colder
area the flowance will be smaller. then the hot area's pail wall thickness
will be thicker. The temperature difference normally caused at least
0.05mm...
2.normally, the pail mould the interlock height should be 20 to 30%
of the plastic pail's height, for example the smaller pail should
be 20%, the bigger pail mould should be around 30% height.
3.the machining process is meaning which kind of machining should
we select and what we should take care when we make the machining
to the pail mould core and cavity |
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B. PAINT BUCKET molds comes to a success, it need very important to
be well ejected smoothly, automaticly and safely,except to avoid the
eccentric. |
 this
is the topic which we should talk, as because paint bucket is different
as all the other kinds of bucket, there is one undercut on the edge
of the bucket mouth, and this undercut (rib) need to be strippered
before it drop down.
If there is any other strength ribs on the edge of the bucket, then
we need to use angle lifts to make the paint bucket mould ejection.
we have very strong technical knowledge and experience on paint bucket
mould design and manufacturing
we usually use air to blow first, let the container not stick to the
core and then use double ejector plates drived by hydraulic cylinders
to ejector the product off the mould. |
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C. To make the BUCKET mold with effective cooling system, one should
design the cooling system with the optimal cooling result. Good cooling
system is the soul of making a high speed working crate mold. |
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 For
the BUCKET mold core, design the cooling channel up to surface 15mm
below the molding surface. And the diameter of the BUCKET mold cooling
channel should be more than 12mm diameter, so that the water can run
flow smoothly in the channel while take away the heat from the core.
For the paint BUCKET mold sliders, also, make the cooling channel
more close to the crate molding area.
For the BUCKET mold cavity cooling, also should design the best cooling
for cool down the hot runner tip area.
By doing the above mentioned design of cooling channel, you can reach
a standard crate molding cycle time around 45 to 50 seconds. However,
we have another way to improve further cooling function. That is to
apply with moldmax material for the critical area. because BeCu has
good thermal conductivity. Even though, the price will be much high
than mould without BeCu, but the good cooling will help make the product
very beautiful. |
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D. good and suitable material selection for BUCKET mold |
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 To
make a high quality BUCKET mold, we need also choose the suitable
steel material for the BUCKET mold. The common steel we will apply
into the crate mold is 2738 for the BUCKET molding area, with HRC
33-38. And then before shipping, can make nitriding for the sliders.
Then this mold can have a mold life from 1Million shots or running
for 3years continuously. Also, we can suggest to use 2344 steel instead
2738, this will be a higher standard mold material for BUCKET mold,
then you will get a 3million shots or running for 5years continuously.
But if someone they only request a production quantity of hundreds
thousands pieces, there is no need to use that material, P20 or same
standard steel can also use for a BUCKET mold. |
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| Types Of Bucket Mold |
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| Related:Thin
Wall Mould, |
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