一种精密砂型铸造型腔内吹扫装置
By employing an inclined upper and lower purging pipe and an adjustable purging nozzle in precision sand casting, the problem of incomplete cleaning of floating sand in the upper sand mold cavity was solved, thus improving the surface quality of the castings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 临沂富中机械有限公司
- Filing Date
- 2025-10-10
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, incomplete cleaning of floating sand in the upper sand mold cavity during precision sand casting results in sand holes on the surface of the casting, affecting the quality of the casting.
A precision sand casting cavity purging device was designed, which adopts an upper purging pipe and a lower purging pipe that are inclined to each other, and the purging nozzle sprays gas at an angle. Combined with the rotation adjustment of the sleeve pipe, it ensures that the floating sand in the cavity is completely removed and prevents the residue in the corners and dead corners.
It effectively prevents residual floating sand in the mold cavity, improves the surface quality of the castings, and ensures the pass rate of the castings.
Smart Images
Figure CN224508410U_ABST
Abstract
Claims
1. A precision sand casting cavity purging device, comprising a frame, an upper sand mold, a lower sand mold, a purging mechanism, an adjusting mechanism, a moving mechanism; characterized in that The upper and lower sand molds are mounted on the frame, the moving mechanism is fixed on the frame, and the adjusting mechanism is mounted on the moving mechanism; the purging mechanism is mounted on the adjusting mechanism; the purging mechanism is located between the upper and lower sand molds. The purging mechanism includes an upper purging pipe, a lower purging pipe, a sleeve pipe, purging nozzles, a mounting rod, a connecting plate, and motor I. The upper purging pipe is located diagonally above the lower purging pipe. The sleeve pipe is rotatably connected to the upper and lower purging pipes, and the purging nozzles are mounted on the upper, lower, and sleeve pipes. The connecting plate is fixed to the upper and lower purging pipes, and the mounting rod is fixed to the connecting plate. A worm gear is provided at one end of the sleeve pipe. A protective cover is fixed to the mounting rod, located outside the worm gear, and the worm is rotatably connected to the protective cover, meshing with the worm gear. Motor I is fixed to the protective cover, and the output shaft of motor I is connected to one end of the worm. There are two sets of purging nozzles, each set containing several nozzles. One set of purging nozzles is mounted on the upper and lower purging pipes and is inclined in the direction of movement of the upper and lower purging pipes. The other set of purging nozzles is mounted on the sleeve pipe, and the two sets of purging nozzles are in opposite directions.
2. A precision sand casting cavity purging device as claimed in claim 1, wherein Telescopic tubes are provided between the upper and lower purge pipes and the purge nozzle; electric push rod II is installed on the upper purge pipe, lower purge pipe, and sleeve pipe, and the output end of electric push rod II is connected to the purge nozzle.
3. A precision sand casting cavity purging device as claimed in claim 1, wherein The adjustment mechanism includes a mounting box, a double-sided rack, an electric push rod I, and gears. The mounting box is mounted on the moving mechanism, and an arc-shaped groove is provided on the side wall of the mounting box. One end of the mounting rod is movably connected to the arc-shaped groove. A limiting groove is provided inside the mounting box, and the double-sided rack is movably connected to the limiting groove. The electric push rod I is fixed on the mounting box, and its output shaft is connected to one end of the double-sided rack. The upper and lower purge pipes are rotatably connected to the side wall of the mounting box. A pair of gears are provided, which are respectively connected to the upper and lower purge pipes, and the gears mesh with the double-sided rack.
4. The precision sand casting cavity purging apparatus of claim 1, wherein The moving mechanism includes a column, a mounting frame, a lead screw, a motor II, and a guide rail. The mounting frame is fixed to the machine frame, and the guide rail is located below the mounting frame and fixed inside the machine frame. The two ends of the lead screw are rotatably connected to the side wall of the mounting frame via bearings. The bottom of the column is movably mounted on the guide rail, and the column is connected to the lead screw via threads. The motor II is fixed to the mounting frame, and its output shaft is connected to one end of the lead screw. The mounting box is fixed to the column with bolts. A bellows-shaped protective cover is provided on the outside of the lead screw.