Economical two-segment ejection mold provided with no ejector retainer plate

Abstract

The invention discloses an economical two-segment ejection mold provided with no ejector retainer plate. The mold comprises a hot runner plate, upper die, an ejector frame, a guide column, an ejector block, an oblique pull part, a pressing plate, a first oil cylinder and a second oil cylinder, wherein the upper die is arranged above the hot runner plate; the top frame is arranged above the upper die; the guide column is arranged vertically; the top frame is movably connected with the upper die along the vertical direction through the guide column; the ejector block is arranged on the inner sidewall of the ejector frame; the pressing plate is arranged between the ejector frame and the hot runner plate; the pressing plate is movably connected with the ejector frame along the vertical direction through an ejector shoulder screw; the bottom end of the oblique pull part is connected with the pressing plate, and a product can be ejected out of the top of the oblique pull part; the first oil cylinder is used for driving the ejector frame to leave away from or approach to the upper die; the second oil cylinder is used for driving the pressing plate to leave away from or approach to the ejector frame. By cancelling components such as the ejector retainer plate, the economical two-segment ejection mold disclosed by the invention has the beneficial effect of reducing the overall thickness dimension of the mold.

Description

technical field [0001] The invention belongs to the technical field of injection molding, and in particular relates to a saving type two-stage ejection mold without ejector pin plate. Background technique [0002] After the plastic product is cooled and fixed in the mold, it needs to be reliably pushed out of the mold. This mechanism is called the ejection system. At the same time, it must be ensured that when the mold is closed, it will not interfere with other parts of the mold , and return to the initial position to start the next cycle. [0003] The design principle of the ejection system: [0004] (1) Introduce the principle of stability; [0005] (2) The principle of push piece force; [0006] (3) The aesthetic principle of plastic parts; [0007] (4) The principle of safety and reliability; [0008] (5) The principle of convenient processing; [0009] With the needs of life, the shapes of plastic products are becoming more and more complex and larger, and the co...

AI Technical Summary

Problems solved by technology

The plastic product is large, the mold ejection system is complicated, the ejector plate is easy to deform, the product is not easy to eject, the hot runner nozzle is too long, and the sol stock is too much, resulting in the carbonization and decomposition of the plastic material, which wastes a lot of time, manpower, material and financial resources.

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