A new type of injection mold for the ejection of the umbrella stand and cylinder thimble of the semi-overflow injection mold

Abstract

The invention discloses a new type of injection mold for demoulding the thimble of the umbrella stand tube of the semi-overflow injection mold. The latch rod, the parting panel block, and the stripping spring seat, the invention realizes the use of the semi-overflow umbrella frame device and the plastic cover cover to form a pizza-shaped fan plate superimposed on the smooth longitudinal edge of the base disc plate The dribbling blade cuts and pushes the edge of the sprue to form a uniform agglomerate surface cutting with a pressing boring knife, and then cooperates with the inner side of the inverted trapezoidal groove to clamp the ball bar frame to support the semi-overflow sprue, through the double-teaming The frame ring wraps the frame mouth of the injection mold, so that the inner flow of the thermoplastic liquid is uniform during the injection molding of the mold, and the deformation of the agglomeration in the later stage is low, and the probability of damage to the inner diameter of the inner channel of the mold is reduced, ensuring the maintenance of the mold At the same time as the inner cavity is cleaned, the slagging block that has been ejected from the mold is also cleaned and pushed up.

Description

technical field [0001] The invention relates to a novel injection mold for demoulding an umbrella holder tube thimble of a semi-overflow injection mold, which belongs to the field of molds. Background technique [0002] Injection mold is a more common usage of mold processing and forming at present, which saves the template from pushing up and down, and after the self-closing inner cavity groove surface template is finalized, it only needs to pour thermoplastic liquid into the inner cavity to fill it, and then it can be cooled, seamless splicing Molds have high molding efficiency, reduced probability of defects, and guaranteed quality. The shortcomings of the current technology that need to be optimized are: [0003] In the hot runner and cooling runner of the semi-overflow injection mold, the phenomenon of runner bonding will occur when the mold is injected, causing the junction of the runner mouth and the inner groove of the mold to become blocked in blocks, and push on th...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a new type of injection mold for releasing the thimble of the umbrella stand tube of the semi-overflow injection mold, so as to solve the problems in the hot runner and cooling runner of the semi-overflow injection mold. The runner bonding phenomenon will occur when the mold is injected, which will cause the junction of the runner mouth and the inner groove of the mold to become connected and blocked. During the push-up process of the thimble in the later stage of demoulding, the bonded block will be cracked and the cracks will be uneven. , causing the block to bend the half-ring frame mouth, causing the edge of the joint to turn outward and stretch the inner diameter, so that the connection of the runner will be excessively accumulated in the later stage of injection molding, so that the pressure of demoulding after processing and forming will be superimposed again, and the internal pressure loss will be poured Crossing, the continuous consumption of the inner plate and channel of the mold affects the injection volume and also changes the amount of agglomeration in injection molding, which makes the overall protrusion of the mold larger, and causes the problem of uneven agglomeration cracks

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