A plug-in sand injection nozzle with flexible installation of hot core box

Abstract

The invention discloses an inserting-type sand blasting nozzle used for hot box flexible installation. The inserting-type sand blasting nozzle comprises a hot box sand blasting nozzle installation welding block (6), a sand blasting plate (1) which is welded with the welding block, a sand blasting nozzle cap (3), a sealing ring (4) and a sand stopping block (5). The inserting-type sand blasting nozzle is characterized in that the upper portion of a sand blasting nozzle body (2) is provided with a flange plate or an unthreaded rod, and the lower portion of the hot box sand blasting nozzle installation welding block (6) is provided with a groove matched with the flange plate or the unthreaded rod on the upper portion of the sand blasting nozzle body; the inner diameter of the groove is larger than that of the flange plate or the unthreaded rod by 1-2mm; and the sand blasting nozzle body, the welding block and the sand blasting plate are fixedly connected into a whole at the outer side of the groove through a screw (7) and a sand blasting nozzle limiting ring (8). By means of the inserting-type sand blasting nozzle used for hot box flexible installation, core-making efficiency of a hot box is improved, and by the adoption of a standard component connecting mode, the structure is simple and deflection is small; on one hand, the problems that an inserting-type sand blasting nozzle is prone to deformation and short in service life are solved; and on the other hand, the defects that the existing inserting-type sand blasting nozzle is large in using quantity of materials, high in installation structure manufacturing difficulty and low in efficiency are overcome.

Description

technical field [0001] The invention relates to casting equipment, more specifically to a plug-in sand injection nozzle for flexible installation of hot core boxes in casting production. Background technique [0002] There are obvious defects in the hot core box plug-in sand shooting nozzle and its installation structure of the core shooting machine in the existing foundry production. makes at 230 o The position value deviation of the sand shooting hole in the working state of C or so (thermal expansion), has no self-adaptive adjustment ability with the center position value of the sand shooting plate and the plug-in sand shooting nozzle in the normal temperature working state, and the plug-in sand shooting nozzle of the hot core box The accuracy of alignment with the upper box has been low for a long time. Scratching the upper box and "clamping" have always been difficult problems. It often brings the shortage of high maintenance frequency of the upper box to the sand core...

AI Technical Summary

Problems solved by technology

[0002] There are obvious defects in the hot core box plug-in sand shooting nozzle and its installation structure of the core shooting machine in the existing foundry production. makes at 230 o The position value deviation of the sand shooting hole in the working state of C or so (thermal expansion), has no self-adaptive adjustment ability with the center position value of the sand shooting plate and the plug-in sand shooting nozzle in the normal temperature working state, and the plug-in sand shooting nozzle of the hot core box The accuracy of alignment with the upper box has been low for a long time. Scratching the upper box and "clamping" have always been difficult problems. It often brings the shortage of high maintenance frequency of the upper box to the sand core production of the corresponding castings. "Seize" phenomenon, which reduces the efficiency of hot core box core making

The rigid installation structure adopted by the existing hot core box shot plate and plug-in shot nozzle installation structure still has the following disadvantages: on the one hand, the plug-in shot nozzle is easy to deform and has a low service life; The sand nozzle uses more materials, the installation structure is more difficult to manufacture, and the efficiency is low.

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