JPH0350671B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a post-treatment device for high-temperature castings from which sand has been separated by demolding.

The punched mold is generally separated into castings and molding sand using a shake-out machine, but in order to prevent damage to the casting, the shake-out machine is used to shake out the mold for a relatively short period of time. In some cases, the vibration force of the shakeout machine is weakly controlled, so that the casting is ejected from the shakeout machine without being completely stripped of the foundry sand. As a result, the castings are kept warm by the molding sand that adheres to them, making it difficult for them to cool naturally.
There was a problem in that the castings had to be left for a long time of 2 to 4 hours.

The present invention has been made to solve the above problems, and one embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG.
When pushed upward, the mold M is vibrated and collapsed by the shake-out machine 2, and is separated into a hot casting product, a raw material consisting of a sprue, and molding sand. Then, as shown in Fig. 2, the rough material is transferred on the shake-out machine 2 and put into the input side of the first vibrating conveyor 3, and then transferred to the right by this vibrating conveyor 3, and then On the way, the sand in the hopper 4 is sandblasted by being blown with compressed air through the first nozzle 5, and the molding sand adhering to the surface is peeled off and at the same time it is cooled. The rough material transported while having the molding sand peeled off eventually falls onto the second vibrating conveyor 6 which is disposed below the first vibrating conveyor 3, and when falling, the head of the second vibrating conveyor 6 causes a 180° It is inverted once. The raw material that has fallen onto the second vibrating conveyor 6 is transferred to the right and is also sandblasted by sand injected from the second nozzle 7 together with compressed air as in the case of the first vibrating conveyor 3. At the same time, the attached molding sand is removed and cooled. The rough material thus transferred by the second vibrating conveyor 6 is placed on the apron conveyor 8, where it is dam-folded according to the input, and the sprue is removed while being transferred and fed into the shot blasting device 10, where it is shot blasted. After being suitably shot blasted in the device 10, it is discharged to the outside.
On the other hand, the molding sand on the shake-out machine 2 is transferred while being disintegrated, and as shown in FIG. It falls onto the provided belt conveyor 11 and is collected. This recovered sand is carried into a rough sieve 15 via belt conveyors 11, 12 and a bucket conveyor 13, and after being roughly sieved there, it is fed into a sand cooler 17 via a belt feeder 16, where it is cooled. It is conveyed to a fine sieve via a belt conveyor 18 and a bucket conveyor 19, and then stored in a sand hopper 21. A portion of the recovered sand in the sand hopper 21 is transferred to a bypass chute 22, a bucket toy conveyor 23, and belt conveyors 24, 2.
5 and is charged into the hopper 4 and used as sand for sandblasting. In addition, most of the recovered sand in the sand hopper 21 is transferred to the belt feeder 2.
6. The raw sand is fed into a kneading machine 28 via a bucket conveyor 27, where it is kneaded into green sand, and then conveyed via belt conveyors 29 and 30 to a molding machine (not shown). A dust hood 31 is provided directly above the shake-out machine 2 and the first and second vibrating conveyors 3 and 6 and is connected to a dust collector (not shown).

As is clear from the above description, in the present invention, the sand is removed from the high-temperature casting from which the sand has been separated by demolding, and the casting is sandblasted by extracting the sand together with compressed air. Some castings are cooled down by the compressed air used for sand blasting at the same time that the molding sand adhering to them is peeled off, so the castings are cooled in a relatively short period of time, and therefore cannot be disassembled as in the past. It has excellent effects such as there is no need to leave the subsequent casting for a long time.

[Brief explanation of drawings]

The drawings show an apparatus for carrying out the present invention, with FIG. 1 being a plan view and FIG. 2 being a partially sectional front view of the main part.

Claims (1)

[Claims] 1 A first vibrating conveyor 3 is disposed below the terminal end of the shake-out machine 2, and a second vibratory conveyor 6 is disposed below the terminal end of the first vibrating conveyor 3 at a distance that allows the casting to be turned over 180 degrees due to a head difference. First and second nozzles 5, which inject sand together with compressed air, are installed above the first and second vibrating conveyors 3, 6.
7, further disposing a belt conveyor 11 below the bottom of the shake-out machine 2,
The belt conveyor 11 is connected to a hopper 4 via a coarse sieve 15, a sand cooler 17, a fine sieve 20 and a sand hopper 21, and the hopper 4 is connected in communication with the first and second nozzles 5 and 6, respectively. Post-processing equipment for castings.