Small injection hot runner system
A hot runner and injection molding technology, which is applied in the field of small injection hot runner systems, can solve the problems of wasting manpower, material resources, processing costs, time, unstable pressure, and unacceptable by customers.
Inactive Publication Date: 2018-09-28
GUANGDONG YUDO HOT RUNNER SYST
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Problems solved by technology
Due to the smooth surface of the valve needle 6, the valve needle 6 moves continuously during injection molding. However, because the valve needle 6 is designed vertically, the injection pressure is relatively high. Stable, it is easy to cause the decomposition of the plastic material in the cavity of the hot nozzle, causing defects in the product, the customer does not accept it, and wastes manpower, material resources and processing costs and time
Method used
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[0010] See attached Figure 2~3 , small injection molding hot runner system, including main nozzle 1, manifold 2, cylinder 4, hot nozzle 5, valve needle 7 and spiral bearing 8, main nozzle 1 passes plastic particles in molten state through runner 3 inside manifold 2 It is continuously fed into the hot nozzle 5, and the cylinder 4 is connected with the valve needle 7 through a screw bearing 8, and the outer surface 71 of the valve needle 7 is a screw structure.
[0011] Described cylinder 4 is electric cylinder.
[0012] When applying the present invention, start the cylinder 4, drive the screw bearing 8 to drive the valve needle 7 to rotate, simulate the process of a small injection molding machine in the cavity of the hot runner, and drive the plastic material in the cavity of the hot nozzle 5 through the rotation of the valve needle 7 Extrude into the mold cavity. At the same time, because of the drive of the hot runner electric cylinder 4, the hot runner system can accurat...
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A small injection hot runner system. The invention relates to the technical field of hot runner processing, in particular to a small injection hot runner system for pushing plastic particles in a molten state from a hot nozzle into a cavity of a mold during hot runner processing. It is realized by the following technical scheme: the system comprises a main nozzle, a splitter plate, a cylinder, a hot nozzle and a valve needle; the main nozzle continuously feeds the molten plastic particles into the hot nozzle through a runner inside the splitter plate; the cylinder is connected to the valve needle through a spiral bearing; and the outer surface of the valve needle has a spiral structure. The forward velocity and pressure of the screw-type valve needle can be precisely controlled so as to control the flow velocity and pressure of plastic in the cavity of the hot nozzle. The novel hot runner system completely functions as a small cavity injection molding machine. In the hot runner cavity,adjustment of the screw-type valve needle helps complete secondary injection molding, thus achieving a protective effect on physical properties of injection molded plastic.
Description
technical field [0001] The invention relates to the technical field of hot runner processing, in particular to a small injection molding hot runner system for pushing molten plastic particles from a hot nozzle into a mold cavity during hot runner processing. Background technique [0002] The hot runner processing technology is to heat the processed plastic particles through the injection molding machine to ensure that the plastic in the runner and gate remains in a molten state for injection molding. In the prior art, if attached figure 1 As shown, the main nozzle 1 continuously sends molten plastic particles into the hot nozzle 5 through the flow channel 3 inside the distributor plate 2, and the valve needle 6 reciprocates up and down in the hot nozzle 5 under the action of the cylinder 4 Movement pushes the plastic particles in the molten state into the cavity of the mold from the hot nozzle 5. Due to the smooth surface of the valve needle 6, the valve needle 6 moves con...
Claims
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IPC IPC(8): B29C45/27B29C45/28
CPCB29C45/27B29C45/281
Inventor 李象烈
Owner GUANGDONG YUDO HOT RUNNER SYST