A device and method for ensuring the matching accuracy of plastic-coated parts and mold cavities

Abstract

The invention discloses a device for ensuring the matching accuracy of a plastic-coated part and a mold cavity, which includes a stamping mold and an injection mold; the stamping mold includes an upper mold, the upper mold includes a discharge plate, the upper mold is embedded with a flattening punch, The outer contour line of the lower surface of the punch is offset 0.01mm‑0.05mm outward than the outer contour line of the non-coated part of the workpiece to be overmolded; Exit the surface of the unloading plate, stamp the edge of the non-coated part of the workpiece to be coated to form a stamping groove; the injection mold includes an upper mold, and the surface of the cavity of the upper mold is provided with a blocking protrusion. When the injection mold is closed, The blocking protrusion is located in the stamping groove, and the outer contour of the blocking protrusion is consistent with the outer contour of the lower surface of the flattening punch. The invention also discloses a method for ensuring the matching accuracy of the plastic-coated part and the mold cavity. The invention reduces the process of manual repair of burrs, reduces labor costs, and improves production efficiency.

Description

technical field [0001] The invention relates to an insert injection mold device and an insert injection molding processing method, in particular to a device and a method for ensuring the matching accuracy of a molded part and a mold cavity. Background technique [0002] Injection molding on the substrate (out-sert molding) is a method of embedding injection molded parts on a part of the metal plate surface. This processing method takes advantage of the combination of the insulation of the resin and the electrical properties of the metal, as well as the easy formability and flexibility of the resin and the rigidity, strength and heat resistance of the metal. Metal-plastic integrated products. At present, the metal plate surface is processed by injection molding. The metal plate surface is generally a stamping part, which is made by stamping, and then the stamped metal plate surface is placed in the injection mold for injection molding processing. Stamping in the insert injec...

AI Technical Summary

Problems solved by technology

The reason for the above problems is that the material thickness of the stamping parts is not accurate, and there are differences in the material thickness of each batch of stamping parts, which leads to the incomplete fit between the mold and the stamping parts, and the gap between the mold surface and the surface of the non-plastic part of the workpiece Large, so it is easy to appear injection molding flash, which affects product quality, and the size of the flash is different due to the difference in material thickness, which requires additional manual grinding process, which increases the production cost

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