SU910352A1 - Unit for separating gating system - Google Patents

Description

(.54) INSTALLATION FOR DIVISION .LITNIKOVOY ./ SISTESH

one

The invention relates to the field of foundry, and more specifically to devices for processing from castings after knocking, and can be used in foundries in engineering plants.

The closest to the invention in its technical essence and the achieved effect (1) to an ectu is a device for beating sprues, including a pneumatic cylinder, the piston of which interacts with a drummer, and a stopper mechanism. The dual-action pneumatic cylinder piston is equipped with a striker transmitting the kinetic energy of the moving piston to the impactor 1.

However, both the speed of movement of the striker and the kinetic energy of impact in this device are insufficient to separate the gating system from steel castings in a hot condition. In addition, the complexity of the pneumatic equipment reduces the reliability of the device operation under conditions of high casting shops.

The aim of the invention is to increase the kinetic energy of impact, simplifying the design of the installation.

This is achieved by the fact that the installation for separating the gating system, including the pneumatic cylinder interacting with the hammer, and the stop mechanism, is provided with a hammer drive,

10 The piston rod of the pneumatic cylinder is connected to the drummer by means of a single-crank connecting rod, whose cheeks are shaped as flywheels. The crankshaft is associated with the drive.

15 of the striker through the overrunning clutch with the possibility of disconnection at the moment of moving the striker down, and the pneumatic cylinder is one-way and provided with a reverse KjianaiTOM.

20

The drawing shows the construct 1 in the scheme of the described installation.

Claims (1)

The device contains a rigid frame 1, on which the one-sided lynder 2 is zaproplek39, piece 3 of which is connected with the drummer 4 by means of a single-crank connecting rod 5 6. The shaft cheeks 7 are made in the form of flywheels. The crankshaft 6 is connected to the drive by means of a gearbox 8 via an overrunning clutch 9. The locking mechanism is made in the form of a brake clutch 10 integrated in the drive and a cam 11 of the clutch 10 operating from a limit switch 12. In a pipeline suctioning air into the working cavity pneumatic cylinder 2, a check valve 13 is placed. A guide device 14 is placed on the legs of frame 1 for feeding the casting 15 into the zone of action of the striker 4. The unit is equipped with a conveyor 16 to withdraw broken sprues. The device operates as follows. The casting 15 is installed on the guide device 14 by a sprue downward and using a stepper conveyor (not shown) is fed into the treatment area. The operator engages the pneumatic clutch brake 10 and rotation from the electric motor through the gearbox is supplied to the crankshaft 6, the piston 17 of the cylinder 2 goes up and compresses the air in the upper cavity, while the check valve 13 prevents air from being expelled into the inlet line. When the flywheel of the crankshaft passes through the top dead center, the piston 7 under the action of compressed air rushes down, the overrunning clutch 9 disconnects the gearbox from the crankshaft 6 and the accumulated mechanical drive energy is realized into shock. The drummer 4 cuts the sprue from the casting 15 and, when the crankshaft of the shaft is rotated, passes the bottom dead center, raising to a distance sufficient for the next casting load. In this case, the cam i1 through the limit switch 12 disconnects the clutch-brake 10 to the next operator command. The check valve 13 opens and refills the cylinder 2 with a portion of compressed air to compensate for possible leaks. Slow accumulation of the potential energy of a mechanical drive occurs due to compressed air in the pneumatic cylinder when the rod passes through the top dead center and is realized into kinetic energy of impact (force pulse), and due to the high speed of the striker (1216 m / sj, the gating system is cut off without distortion of parts). The installation for separating the gating system allows for splitting the bush in a hot state. When working at the installation, the scraping of castings is eliminated / the cooling is eliminated bushes, therefore, the installation does not require cooling conveyors. Since the castings retain their original orientation after knocking out the molds, this makes it possible to mechanize their loading onto the overhead conveyor The invention The installation for separating the gating system, including the pneumatic cylinder that interacts with the hammer, and the stopper mechanism characterized in that, in order to increase the kinematic energy of the impact and simplify the installation design, it is equipped with a hammer drive, the piston rod of the pneumatic cylinder is associated with the hammer By means of a single-crank connecting rod, whose cheeks are made — in the form of -wheels, the crankshaft is connected with the drive of the hammer through the overrunning clutch, which can be disconnected at the time the hammer moves down, and the pneumatic cylinder is one-way and equipped with a check valve. Sources of information taken into account in the examination. USSR author's certificate № 240204, cl. B 22 D 31/00, 1965.