Double-shot molding mold for forming double-face rubber coated product

Abstract

The invention discloses a double-shot molding mold for forming a double-face rubber coated product. The double-shot molding mold comprises a fixed mold (1), a movable mold (2), a movable mold carrier plate (21), a movable mold core (22), a slider carrier plate (23), an oil cylinder (24) and a movable cavity sliders (3). The invention adopts a following technical scheme: the movable mold carrier plate is provided with the slider carrier plate; two pairs of movable cavity sliders are slidably arranged between the slider carrier plate and the corresponding front and back walls of the movable mold core; the movable cavity sliders cooperate with four frame core molded surfaces of the movable mold core, are in symmetrical positions, and respectively comprise an A movable bone cavity and an A movable coating cavity, and a B movable bone cavity and a B movable coating cavity; a groove arranged on the movable mold carrier plate is provided with an oil cylinder, which is connected with the movable cavity sliders through a driving rod; and the fixed mold is provided with a pair of fixed bone cavity and fixed cover cavity. The movable cavity sliders alternately replace the movable bone cavity and the movable cover cavity to automatically form double-face rubber coating of a product, so as to reduce cost, improve efficiency and increase qualified rate of injection molding for the frame double-face rubber coated product.

Description

technical field [0001] The invention relates to a two-color injection mold, in particular to a two-color injection mold for forming a double-coated rubber product through continuous injection molding of a rigid skeleton of a product and an elastic plastic wrapping around the outer edge of the skeleton by a two-color injection molding machine. Background technique [0002] Two-color injection molding machine, also known as double-material injection molding machine, is an injection molding machine equipped with two injection barrels for injecting plastics of different colors or different properties and a movable worktable with a rotating working disc; Automated injection molding operations can reduce labor costs, stabilize production efficiency, quality, and production capacity. Due to the invariability of the cavity of the two-color injection mold in the prior art, the mold can only realize the automatic single-coated plastic injection molding of the skeleton rubber-coated pr...

AI Technical Summary

Problems solved by technology

Due to the invariability of the cavity of the two-color injection mold in the prior art, the mold can only realize the automatic single-coated plastic injection molding of the skeleton rubber-coated product, and cannot perform automatic double-coated plastic injection molding on the product. refer to Figure 4 ; As a last resort, the prior art adopts the method of dual-mode / two-machines to solve the above-mentioned difficult problem, that is, earlier use a common injection molding machine and a pair of common injection molds to injection mold the skeleton part of the skeleton double-wrapped rubber product, and then use another Ordinary injection molding machine, the skeleton part of the skeleton double-coated rubber product is embedded as an insert in another pair of ordinary injection molds to inject the double-coated part of the skeleton double-coated rubber product; the method of double mold / double machine has complicated procedures and Occupying injection molding machines, molds, and labor, the production cycle is long, the cost is high, the production efficiency is low, and the quality pass rate is low;

[0003] In addition, there is also a manual cavity change method that uses a two-color injection mold and a two-color injection molding machine to manually change the mold to form a double-coated rubber product; that is, first form the product skeleton on the skeleton cavity side of the two-color injection mold, and then open the mold , take out the skeleton of the product manually, change the mold to the side of the double-coated rubber cavity of the same mold, and complete the molding of the double-coated rubber part of the product; there is a safety hazard of "clamping hands" in the mold due to machine error in the manual cavity change method , the manual mold change work intensity is high, and the mold change is not easy to reach the designated position, so that the scrap rate of the product is high, resulting in high cost; the manual cavity change method also has the problems of long production cycle, high cost, low production efficiency, and low quality pass rate; Therefore, the prior art has the problems and deficiencies of double-sided rubber that cannot automatically form products, high cost, low efficiency, and low pass rate.

Images