The diversion channel is the channel between the main channel and the gate, which is generally opened on the parting surface and plays the role of diversion and steering.
The shape of the shunt section can be round, semicircular, rectangular, trapezoid and U shape, etc., round and square section
The specific area of the flow channel is the smallest (the ratio of the surface area of the flow channel to the volume is called the specific surface area) at the temperature of the plastic melt
The drop is small, the resistance is small, and the flow channel efficiency is the highest. But the processing is difficult, and the square section is not easy to release, so in
The section shapes commonly used in actual production are trapezoid, semicircle and U shape.
Key points of diverter design:
(1) Under the premise of ensuring sufficient injection pressure so that the plastic melt can be successfully filled with the cavity, the diverter is cut
The area and length should be as small as possible, and the turning point of the diversion channel should be excessive with an arc.
(2) When the diverter is long, a cold feed well should be set up at the end of the diverter. For this model it's on the diversion path
No need to open a cold feed well.
(3) The position of the diverter can be opened separately on the fixed template or on the moving template, or it can be opened simultaneously on the moving template.
On the fixed template, the cross section shape of the diverter is formed after the mold is closed.
(4) The connection between the diverter and the gate should be processed into a bevel, and the arc should be excessive.
1) The length of the diverter
The length of the diverter depends on the overall layout of the mold cavity and the location of the gate, and is reduced from the transfer of molten material
The requirements for less pressure loss, heat loss and reduced runner condensate should be shortened.
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