An injection mold for a shadowless two-color light-transmitting plastic product

Abstract

The invention relates to an injection die for unshadowed double-colour light-transmitting plastic products. The injection die comprises a male die plate and a male die core arranged on the male die plate. The injection die further comprises a fixed block fixedly inlaid on the male die core, and a top block inserted on the male die core in a manner of being capable of moving up and down along a die opening direction and with one side surface bonded with the fixed block, wherein a half-horn runner is arranged on one side surface bonded with the fixed block, of the top block, the tip of the half-horn runner stretches in a die cavity and is provided with at least one sprue used for carrying out glue injection on a non-light-transmitting layer contained in a light-transmitting layer; the glue injection is directly carried out below the product through the half-horn runner, and construction of a runner below the light-transmitting layer is not required, thus the problem of shadows during light transmitting of the light-transmitting layer is solved, and the quality of the product is improved; and the problem of difficult die release is solved and damage to the product during die release is avoided through adopting a method of secondary die release.

Description

Technical field [0001] The invention relates to a glue feeding structure, in particular to an injection mould of a two-color transparent plastic product without shadows. Background technique [0002] With the development and progress of electronic technology, the domestic computer and computer peripheral market has become more and more prosperous. In order to satisfy consumers’ pursuit of keyboard appearance and cool effects, keyboard developers have developed a light-transmitting keyboard. Even in a dark environment, you can see the letters on the keys clearly, and at the same time make the keyboard more scientific and technological. For example, a two-color keycap (application number: 201321001245.1) for a luminous keyboard disclosed in the Chinese patent document, including internal transparency The light layer and the outer non-light-transmitting layer, the outer non-light-transmitting member constitutes the shell of the key cap, and the inner light-transmitting layer is used...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that there is a shadow under the light-transmitting part of the existing two-color light-transmitting product, which affects the quality of the product. A shadowless two-color film with simple structure, low cost, good injection molding effect and easy demoulding is now provided. The glue feeding structure of the injection mold of light-transmitting plastic products is used to solve the technical problems existing in the background

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