SU1685599A1 - Core rods knock-out unit - Google Patents

Abstract

The invention relates to foundry and can be used for knocking out tubular skeletons of long casting rods in various fields of engineering. The purpose of the invention is to increase the efficiency of the process of knocking out frames and simplify the design. In the installation, the pusher bar is provided with a spring-loaded striker and a pivot-mounted hammer, which contains a piston-chipper, periodically interacting with a shock absorber. At the same time, electromagnetic accelerators are placed coaxially with the pushers on the conveyor frame. 4 sludge.

Description

(L

WITH

The invention relates to foundry and can be used for knocking out tubular skeletons of long casting rods in various fields of engineering.

The purpose of the invention is to increase the efficiency of the process of knocking out frames and simplify the design.

Fig, 1 shows the installation plan; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; in FIG. 4, node I in FIG. 2

An installation for knocking out the core frames contains the ejector 1 of the frames 2 in the carriage 3, which carries the pushers 4 and is driven by the electric drive 5 and the chain gear 6, the pushing conveyor 7 for castings 8, which includes the guides 9, the stop mechanism 10 with the pneumatic cylinder 11, the electric drive 12, the chain transmission 13, the receiving table 14 for the frames and the driving pneumatic cylinder 15 of its rotation.

Each pusher 4 is made in the form of a hollow rod, on the end of which in the groove 16 is movably mounted the striker 17, fixed by means of a finger 18 in the groove 19 and spring-loaded 20. In the channel 21 of the rod movably on ball bearings 22 a pneumatic hammer 23 set in motion compressed by air. The drummer 23 is filled in the form of a hollow plunger, from the internal cavity 24 of which the piston-baffle 25 is movably placed, periodically interacting with a spring shock absorber 26 fixed in the bore 27 of the striker. In the case of the impactor, the channels 28 and 29 are provided for supplying and discharging compressed air and the damping washer is installed thirty

On the frame of the pushing conveyor 7, where it mates with the ejector 1 along the axis of movement of the pushers 4. coaxially with each

00

ate yu che

smoke pusher mounted electromagnetic accelerators 31 pneumatic impactors 23 in the form of a coil 32 of the solenoid.

Installation for knocking out the core frames works as follows.

A bush from three castings 8 of economizer pipes from a casting conveyor (not shown) enters the guides 9 of the pushing conveyor 7 and, when the drive 12 is turned on, moves into the zone of action of the ejector 1, exact installation of the castings in a predetermined position is carried out by the stop mechanism 10.

By activating the drive 5, the carriage 3 by means of a chain transmission 6 begins to move to the right and act by the pushers 4 by means of spring-loaded springs 20 of the strikers 17 on the ends of the frames 2. At the same time, compressed air is supplied to the channels 21 of the hollow rods of the pushers 4 and electric current is supplied to the coils 32 of the solenoids, with This pneumatic impactor 23 of each pusher begins to move to the right, enters the zone of the electromagnetic accelerator 31 and, acquiring acceleration, strikes the striker 17 with increased energy, carrying out the frame ca in the core mass of a lengthy casting 8.

To increase the intensification of the knockout process and the possibility of long-term use of the frames, a piston-baffle 25 is installed, installed in the inner cavity 24 of the pneumatic impactor 23. At the time of the impact of the pneumatic striker 23 on the striker 17, the baffle 25 due to inertial forces and air pressure through an adjustable orifice damper washer 30 continues to move to the right, hits the spring-loaded shock absorber 26 and bounces to the left, receiving additional acceleration due to the pressure of air entering through channel 28. Compressed the air through the channel 29 goes to the receiver (atmosphere), the pressure in the right side of the cavity 24 is slightly reduced, the air entering through the opening of the damping washer 30 again moves the striker 25 to the right before contact with the spring damper 26, and the compressed air from the left part of the cavity 24 is discharged through channel 29. This causes the baffle 25 to make frequent reciprocating movements, creating a pneumatic impactor-baffling system through the firing pin 17 on the frame, thus destroying its connection with the rod mass otlioki.

Upon further movement of the pushers 4 to the right, the latter push the frames 2 onto the receiving table 14, from which, when rotated by the pneumatic cylinder 15, they are dropped into

container for reuse. At this moment (the beginning of the frame pushing out), the supply of compressed air to the cavity 21 of each push rod and the cavity 24 of the pneumatic impactor 23 stops;

the latter, held in the magnetic field of the solenoid, remains in place and thus when the pusher moves the striker 17 to the rightmost position, the drummer is in the leftmost position of the rod and in its cavity 21.

At the end of the process of knocking out the frame by turning on the drive 5 of the carriage 3 with the pushrods 4, it reverses to its original position, and the feed

electric current to the coils 32 of the solenoids, with the result that the pneumatic strikers 23 also return to their original position, being in the cavity of the 21 pushrod rods.

In the following, the entire described cycle is repeated automatically.

Claims (1)

The use of the proposed technical solution increases the efficiency of the process of knocking out the core frames and allows to simplify the installation design. As a result of an intensive dynamic effect on the frames, their long-term use is achieved. Invention Formula An installation for stripping the core frames, containing a frame ejector, made in the form of a drive carriage carrying pushers, pushing a jib for a casting with a frame, a receiving table of the frames, characterized in that, in order to increase the efficiency of the process of knocking out the frames and simplify the construction, it is equipped with electromagnetic accelerators, each of which represents a solenoid fixedly mounted on the frame of the pushing conveyor at its interface with the pusher coaxially with the axis of movement of the pushers, each pusher being a hollow rod, at the end of which a spring-loaded firing pin is movably placed, and in the inner cavity there is a pneumatic hammer , made in the form of a hollow plunger, in the internal cavity of which the piston-chipper and spring shock absorber are movably mounted. about dozduh 23 28 24 V7 / 77 /////// X ////// // A /////////////  XXX КХХХ X XX Ч ХХХХ X  ////////////////// thirty O.Golovach FIG. four Compiled by R.Seifulov Tehred M. Morgenthal 25 I Fig.Z27 25 Proofreader A.Osaulenko