Hot runner flow and flow length adjusting insert and hot runner system

Abstract

The invention discloses a hot runner flow and flow length adjusting insert and a hot runner system. The hot runner flow and flow length adjusting insert comprise a columnar base body. Material holes are correspondingly formed in the two ends of the base body. A spiral slideway is arranged on the outer side wall of the base body. The slideway is communicated with the material holes. After the insert is mounted in a runner cylinder with the relatively short length, due to the fact that the spiral slideway is arranged on the base body, the straight-line-shaped flow path in an original runner cylinder is changed into a spiral curve flow path, the flow length of a plastic raw material in the short runner cylinder is increased, the flow length difference of the two plastic raw materials in a long runner cylinder and the short runner cylinder is shortened, the discharging is more uniform, the gap between the hot runner point and the point is shortened, and the closer balance is achieved.

Description

technical field [0001] The invention relates to the field of injection molds, in particular to a flow and length regulating insert of a hot runner and a hot runner system. Background technique [0002] Nowadays, many plastic parts need to use such as figure 1 As shown in the hot runner device, the lengths of the two runner barrels (2) of this hot runner device are inconsistent, so the plastic raw material flows into the two runner barrels (2) after entering from the runner nozzle (1) , and then flow out from the discharge nozzle (3) on the runner barrel (2). Since the lengths of the two runner barrels are different, the distance between the plastic raw material from the runner nozzle to the parting surface of the product is two The length of the path between the two discharge nozzles is very different. The short path feeds the material faster and the injection is good, and the long path is difficult to be fully injected, so it is difficult to maintain the mutual balance bet...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, many plastic parts need to use such as figure 1 As shown in the hot runner device, the lengths of the two runner barrels (2) of this hot runner device are inconsistent, so the plastic raw material flows into the two runner barrels (2) after entering from the runner nozzle (1) , and then flow out from the discharge nozzle (3) on the runner barrel (2). Since the lengths of the two runner barrels are different, the distance between the plastic raw material from the runner nozzle to the parting surface of the product is two The length of the path between the two discharge nozzles is very different. The short path feeds the material faster and the injection is good, and the long path is difficult to be fully injected, so it is difficult to maintain the mutual balance between the hot runner points.

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