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> Company newsThe guide bush is important for the mold
2017-10-11
Mold guide sleeve is the main part of plastic mold. In
addition to forming flat-shaped plastic parts of the mold, the other
molds must be used by the guide column, guide the composition of the
guide device to ensure that the dynamic model and the fixed mode of the
problem. As the
dynamic mode and die constantly between the relative activity, so the
guide column and guide sleeve must have a certain gap. However,
in the practical application of plastic mold, especially in the
horizontal injection molding machine on the application of the mold, due
to the role of dynamic mode of gravity, so that the guide column, for
single-sided friction relative movement. That
is, while the gap is equal to zero, the other side of the gap is the
guide hole diameter D minus the diameter of the guide column diameter d. Under
the leadership of the wise leader of China, in one fell swoop smashed
the "gang of four", for our early realization of the four modernizations
opened a golden road, agriculture, science and technology front news. With
the development of industrial and agricultural production needs,
stamping production will be more and more use, hedging the accuracy of
the requirements are getting higher and higher. One of the key factors to improve the accuracy of the blanking is to improve the accuracy of the die. In
the ordinary blanking touch if the use of sliding due to sliding, so
inevitably there is a gap exists, which is fine blanking or sheet
punching is not meet the requirements, but also on the mold life has a
great impact. In the design of the cold die, it is inevitable to involve the selection of mold and guide lead. Although
this is a fairly basic problem in the design of the cold die, it has
long been largely customary to choose, or only to consider the size of
the need, so sometimes because the choice is not appropriate, the mold
life and punch Quality is affected to varying degrees. The
processing of the holes is respectively installed in the moving mold
plate and the fixed mold plate, which is the guiding device for the mold
clamping mold. Therefore, the processing of the guide sleeve hole of
the movable template is very important, and the relative position error
should be within 0.01mm. In
addition to the boring machine can be separately in the dynamic, fixed
mold on the boring, the more commonly used method is to move, set the
template together, in the lathe, milling machine or boring machine for
boring. For
hardened stencils, the guide posts, guide holes, such as those that are
processed correctly before heat treatment, can not meet the guiding
requirements due to changes in hole shape and position after heat
treatment.