Sand shell core mold pouring box

Abstract

The invention provides a sand shell core mold pouring box, which comprises a sand box body. A clamping fixing part for limiting and fixing a sand shell core mold is arranged in the sand box body to keep a distance between the sand shell core mold and the bottom of the box, and then a sand filling operation can be continuously completed at one time, so that the sand filling efficiency is improved.In addition, the box body can directly be overturned and emptied after pouring, and in such case, the clamping fixing part is still kept connected to the box body rather than being mixed in a casting,waste molding sand and filling sand. A casting module fixing packaging operation is also not required to be executed on the sand shell core mold by use of a clamping plate and a pull rod. The sand shell core mold pouring box can be applied to a casting molding operation based on an ordinary sand box as well as a negative pressure casting molding operation.

Description

technical field [0001] The invention belongs to the field of sand shell core mold casting, and in particular relates to a vacuum negative pressure pouring device for sand shell core molds of small and medium-sized metal castings. Background technique [0002] At present, the traditional sand shell core casting used for the production of small and medium-sized metal castings mainly adopts the method of buried sand casting; It is composed of two core templates that are arranged in close contact. The cavity plate surface of each core template is densely covered with semicircular cavities a. A circular cavity for forming steel balls, and a molten steel flow channel c connected to each other for connecting the main runner b is set between the circular cavity a, such as Figure 1-3 As shown, put an appropriate number of unit molds together and fix a group of casting molds by the end plates and the tie rods connecting the end plates. The several groups of casting molds are placed i...

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Problems solved by technology

[0004] Regardless of whether the negative pressure environment is used for casting, it is necessary to stick an appropriate number of unit molds together and fix them as a group of casting molds by the end plates and the tie rods connecting the end plates, and first spread a certain thickness of filling sand in the box as The sand on the bottom layer, and then place the pouring modules group by group on the sand pad on the bottom layer, and then continue to inject the filling sand. The injection process of the filling sand is completed in two times, that is, the sand filling operation needs to be interrupted in the middle; after the casting is completed The operation of collecting the castings is also difficult, because the carbonization of the coating agent material in the sand shell core mold has no integrity and strength due to the baking of high-temperature liquid injection. Due to the obstruction of filling sand, the core mold of the sand shell is broken and scattered, making it impossible to collect the castings. If the box is turned over and dumped directly, the end plates and tie rods for connection will be mixed with sand mold waste and filling sand, and the castings are also difficult to separate. Inspection and collection of castings

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