Auxiliary forming process for thin-walled product and tool structure thereof

Abstract

The invention discloses an auxiliary forming process for a thin-walled product and a tool structure thereof and relates to the field of manufacturing of refrigerator liners. The process comprises thefollowing steps: S1, heating and softening liner ABS and HIPS plates; S2, bubbling the softened ABS and HIPS plates; S3, performing contact with a straight edge rolling auxiliary mold when the liner ABS and HIPS plates are bubbled to drive the auxiliary mold to rotate; S4, stretching the ABS and HIPS plates to a coating main body by means of a non-blocking baffle plate; S5, adjusting smoothness offour corners of the panels by means of a corner auxiliary mold assembly; S6, carrying out vacuum adsorption after leveling the stretching movement; and S7, carrying out cooling forming and demoldingto obtain a plastic-rubber part of an inner cavity of the refrigerator. The auxiliary forming tool is designed according to a novel forming process, is easy to mount and can move freely along the X, Yand Z axes, the distance between the tool and a plastic uptake mold core is adjusted flexibly, and the material flow thickness of the softened ABS and HIPS panels are uniform and smooth, so that thestretching forming effect of a liner product is enhanced and the rejection rate is reduced.

Description

technical field [0001] The invention belongs to the field of refrigerator liner manufacture, and in particular relates to an auxiliary molding process for thin-walled products and a tooling structure thereof. Background technique [0002] Refrigerator liner blister molding is a process of heating and softening ABS and HIPS plates, blowing foam, wrapping the main core, vacuum adsorption, cooling and molding, and demoulding to obtain the refrigerator lining. Pre-adding auxiliary forming tooling before vacuum adsorption will reduce the adsorption vacuum time and more effectively absorb the main core before the plate is cooled and hardened, and meet the qualified products required by the process shape. [0003] However, there are many problems in this structural form in the existing technology, such as the auxiliary tooling is an inactive structure, the corner auxiliary mold is an unadjustable structure, the softened plate is in a flowing state when the main mold core is wrapped...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an auxiliary molding process for thin-walled products and its tooling structure. An integral seamless rolling forming process is adopted in the direction of the large surface around the inner tank, and a horizontal The sliding forming process solves the difficult problems of poor inner liner molding and uneven stretching of thin-walled and small R-angle products in the industry

Images