Mechanism for separating plastic products from slide blocks on four sides

Abstract

The invention discloses a mechanism for separating plastic products from slide blocks on four sides, belonging to the field of a thermoplastic forming mould. The mechanism is characterized in that during mould opening, a fixed mould seat plate and a fixed molding board are bounced off under action of tension of a spring; an inclined wedge fixed on the fixed mould seat plate drives the fixed mould slide blocks to move, so that the fixed mould slide blocks are separated to get out of inverted buckle parts outside the plastic products; meanwhile, the fixed mould slide blocks are used for limiting, inserting and separating movable mould internal-drawing slide blocks, so that the movable mould internal-drawing slide blocks are internally core-pulled under the action of the tension of the spring to get out of the inverted buckle parts inside the plastic products; during mould closing, the inclined wedge guides the fixed mould slide blocks to move, so that the fixed mould slide blocks at the two sides are in surface contact; meanwhile, tapered bosses of the fixed mould slide blocks contact with tapered slots in the tops of the movable mould internal-drawing slide blocks to complete mould closing. The fixed mould slide blocks and the movable mould internal-drawing slide blocks move, so that the products are got out of the inverted buckle parts in four directions, and therefore, a mould structure is simplified, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of thermoplastic molding molds, and relates to a plastic mold with a four-sided sliding block detached from a plastic product, and is mainly used in molds with undercuts on the inside and outside of plastic products. Background technique [0002] Plastic forming molds are tools that use their specific shapes to form products with certain shapes and sizes. Currently, molds with undercuts on the inside and outside of plastic products are realized by slider forming outside undercuts and inclined top forming inside undercuts. In the mold in which the slider and the slanted top realize the undercut, the movement process of the slider and the slanted top is carried out separately during the mold opening process, in which the slider is positioned by the pressure plate, the wedge block is limited, the slanted guide column is guided, and the slanted top It needs to be connected by a pin to the fixed block with a slideway, and ...

AI Technical Summary

Problems solved by technology

[0003] In the process of processing, there are many matching dimensions and strict tolerances, which makes the processing difficult; in the assembly process, there are many assembly parts related to the inclined roof, which makes the assembly process cumbersome and error-prone, and the height of the inclined roof is difficult to adjust; in the production process, the inclined roof The matching parts are prone to strain due to long-term sliding. In mass production, the stroke of the inclined top is long, and the strength is weak and easy to break, thereby increasing costs and reducing production efficiency.

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