Method for foam investment molding using automatic molding and cutting equipment

Abstract

The invention provides evanescent mode casting foam fired mold automatic molding cutting equipment and method. The equipment comprises a frame device; transverse transmission devices for providing transverse movement are symmetrically mounted on the two sides of the frame device; vertical transmission devices for providing vertical movement are mounted at the tops of the transverse transmission devices; resistance wire cutting devices for cutting are mounted on the vertical transmission devices; tension adjusting mechanisms for controlling tension force are mounted on the resistance wire cutting devices; waste gas absorbing devices are mounted on the vertical transmission devices; and the transverse transmission devices, the vertical transmission devices, the resistance wire cutting devices, the tension adjusting mechanisms and the waste gas absorbing devices are connected with a control module at the same time. The equipment can realize integral machining of appearance structures andinner cavity structure of foam fired molds, replaces traditional manual operation modes, improves the working efficiency, and guarantees the machining precision and the molding quality.

Description

technical field [0001] The invention belongs to the technical field of investment casting, and in particular relates to a foam investment molding method using automatic foam investment molding and cutting equipment for lost foam casting, which is suitable for automatic cutting and molding of patterns in lost foam casting. Background technique [0002] The patterns of investment casting are mostly made of materials that can be melted or disappeared directly, usually using wax molds or foam materials. Because foam materials are easy to form, they have been widely used in large castings. Currently, foam patterns are formed and cut. Among them, most of them still adopt the method of manually stretching the heating resistance wire or manual cutting. This kind of operation method has the following problems: [0003] (1) The heating resistance wire can only cut and process the outer surface of the investment mold on the workbench, and cannot realize the production and processing of...

AI Technical Summary

Problems solved by technology

[0003] (1) The heating resistance wire can only cut and process the outer surface of the investment mold on the workbench, and cannot realize the production and processing of the investment mold with special process shape requirements. For example, when it is necessary to cut an inner cavity on the investment mold, During processing, the inner cavity can only be cut out manually, and then it can be processed on the investment casting investment molding equipment. The operation process is time-consuming and laborious, and the error is large

[0004] (2) In the process of cutting the foam investment mold with heating resistance wire, a large amount of harmful gas will be produced. Once the human body inhales it, it will cause certain harm to the health of the processor and cause serious pollution to the environment.

[0005] (3) In the process of resistance wire cutting, since the resistance wire is artificially stretched for cutting, if the tension of the resistance wire is too large, it is easy to break during cutting; if the tension of the resistance wire is too small, the processed melt There will be large errors in the mold, rough surface and other problems, which do not meet the high precision requirements of the investment mold

[0006] (4) In order to be able to produce and process investment patterns of different heights, the resistance wire cutting machine must be able to adjust the vertical height, but when the vertical transmission device is displaced too much in the vertical direction, it will cause the vertical transmission device and other mechanisms of the equipment to Collision, breakage of resistance wire, product scrapping, and damage to equipment

Images