| 摘要 |
An improved hot runner manifold for a multi-cavity injection molding system. The manifold is formed in a manifold block and an insert. This insert may be a round bar which outward shape is grooved with flow channel. Or this insert may be combined by a set of a grooved round bar together with matched grooved pipes. This insert will be inserted into the bore of manifold block. This grooved insert work as a flow channel inside the manifold. Compared to the traditional manifold, first this invention can easily help produce a balance-flow manifold. That will shorten the delivery time. Second, this invention can help produce an inexpensive cost of a balance-flow manifold. Third, this invention provides an easier structure to make multiple-drops (such as 12, 16, 32, 64, 256 drops) in an elongated direction with balance flow. Fourth, this invention can provide a manifold structure to help the flow channel of insert to be easily taken off for cleaning. Finally, this invention can provide a very good temperature-balance manifold in order to help molding nice quality plastic for each drop. Because the insert can be made by a good heat-conduct material and then to get an equalized temperature in each drop inside the manifold.
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