JPH05220666A - Movable shot blasting device - Google Patents

Abstract

PURPOSE:To minimize the handling process after releasing the mold of a heavy casting, move a movable shot blasting machine having a centrifugal projector and a shot recovering regenerating mechanism on board to the casting without moving it, and improve working environment and working efficiency. CONSTITUTION:A plurality of centrifugal projectors 12 and a recovering regenerating mechanism for recovered casting sand and shot are provided on the ceiling and side surface of a movable cabinet 6 which is saddled on a hopper 1 with grate of a relatively wide range and has opening and closing doors on the front and rear whole surfaces, and the cabinet 6 is moved to enclose a heavy casting the mold of which is released on the hopper 1 with grate, and sand falling from the heavy casting and crushing of sand mass are performed in its grinding chamber to grind the surface of the casting.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a centrifugal projecting machine and a polishing / cleaning material supply mechanism for a large casting placed on a great popper when performing sand removal and crushing of a sand lump of a large casting. The present invention relates to a mobile shot blasting device which is integrally equipped and moves a mobile cabinet surrounding the periphery except a bottom surface and polishes this in a polishing chamber of the cabinet.

[0002]

2. Description of the Related Art Conventionally, in order to perform sand removal and crushing of sand lumps of large castings, after the pouring frame of the large casting that has been sufficiently cooled after pouring is completed, After hanging the wire rope on the mold and suspending it with a crane etc., or moving the large mold unframed on the moving stand together with the moving stand into the polishing chamber of the static shot blasting machine by moving means such as a forklift. , Closing the door of the blasting chamber and projecting a shot for a certain period of time toward a large casting from a plurality of centrifugal projectors attached to the ceiling and wall surfaces of the shot blasting device, and removing the sand from such a large casting Was crushed.

However, in such conventional sand removal and crushing of a lump of sand, a handling means for moving a sufficiently cooled large-sized casting flask into a polishing chamber of a fixed-type shot blasting machine after unframed. In the case of hanging with a crane, when hanging the wire rope on the large mold after unraveling, the rope must be hung so that the large casting in the molding sand that easily collapses can be stably lifted, and the moving table In case of moving the whole mold, when unraveling the large mold, it is necessary to move it once on the moving table, then perform the unraveling work on this moving table and move it by the forklift. A series of handling steps for moving a large casting to a predetermined place in the polishing chamber requires a great deal of skill and time with a great deal of skill. The dusting process of the foundry sand inevitably scatters during the casting process and the working environment becomes poor, and there is concern that workers in the field will be shunned.In addition, in the handling process and the cleaning process after unraveling the casting frame. It has various points to be improved, such as a great deal of labor for collecting scattered casting sand and shots.

[0004]

SUMMARY OF THE INVENTION The present invention was created in view of the above situation. The problem is that the handling process after unframed large castings are minimized to generate dust due to scattering of casting sand. In addition to eliminating the possibility of the above, the shot blasting machine surrounding the periphery except the bottom moves so as to take in the large casting, and the surface is ground and swept in the polishing room to improve the work efficiency and the working environment In addition, the casting sand and shots after blasting are collectively collected and separated,
The shot is to be supplied to the centrifugal projector again by the collecting and reproducing mechanism so that it can be reused.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a hopper with a grate is provided in a relatively wide area, and the hopper with a grate is provided so as to extend over the front and rear surfaces of a cabinet which is movable by traveling wheels. Formed as the door of the large casting, the casting sand is taken into the center of the polishing room of the cabinet and shot by the plurality of centrifugal projectors attached to the ceiling and the wall surface for a certain period of time to be exfoliated from the large casting. The shots are collected and separated, and the shots are recirculated to the upper part of the cabinet equipped with a recovery / regeneration mechanism so that they can be reused to remove foreign substances such as slag and dust contained in the shots, and a plurality of shots again. By supplying shots to the centrifugal projector, the objective was to improve work efficiency and greatly improve the work environment.

[0006]

According to the present invention, a large casting which has been sufficiently cooled after the pouring is completed is unframed at an arbitrary position in the longitudinal center of the hopper with a great grade, and the sand lumps generated at the time of unraveling are unfolded. After dropping it into the great hopper, open the door on the front and rear of the movable cabinet with the large casting, and move the cabinet to move the large casting to the center of the polishing chamber. , And a plurality of centrifugal projectors attached to the ceiling and left and right wall surfaces for a certain period of time to simultaneously project shots to remove casting sand containing large castings and at the same time to clean and clean the surface of large castings. More, the foundry sand and the slag adhering to the surface of the foundry are dropped into the hopper with a great grade, and they are collected by a vibration conveyor arranged at the center of the great hopper in the longitudinal direction. It is conveyed to a recovery / recovery mechanism installed in the upper part of the cabinet through a vibration conveyor that goes straight to the conveyor, where it is separated into shot sand and shot, and the shot is separated by a shot separator to remove foreign matter such as shot and slag, and only the shot is taken. It is re-supplied to the centrifugal projector again to enable continuous blasting.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. A hopper 1 with a grate is buried in a relatively wide area, and vibration conveyors 2 and 2 are arranged at the center of the longitudinal direction of the hopper 1 to collect collected materials at a certain position. A vibration conveyer 3 is provided to collect the gas, and go straight from this location to discharge it to the outside of the great hopper 1. Also, the great hopper 1 is provided with orbits 4 and 4 extending slightly to the left and right. A large cabinet 6 is movably arranged on the base plate 4 via a large number of wheels 5, 5, and the cabinet 6 has front and rear hoisting doors 7, 7, and side surfaces of the cabinet 6. And a recovery / recovery mechanism including a bucket elevator 8, a screw conveyor 9, a shot separator 10 and a shot hopper 11 are mounted on the upper surface of the shot hopper 11. A plurality of centrifugal projectors 12, 12, ... Attached to the side and upper surfaces of the cabinet 6 are provided with shot introducing pipes 13, 13, .. 3, a bucket elevator 14 for transferring the collected material to a bucket elevator 8 fixed to the cabinet 6 is provided, and in the figure, 15 is a large casting.
Is a shot control gate, 17 and 17 are machine frames for opening and closing doors, 18 and 18 are wire ropes for opening and closing doors, 19 is a screw conveyor, and 20 is a dust collecting duct.

The present invention is constructed as described above, and has a hopper 1 with a grate which is buried in a relatively wide area.
Depending on the size of the large mold to be subjected to the blasting treatment, an appropriate size is buried underground, and a plurality of centrifugal projectors fixed to the blasting chamber of the cabinet 6 and its side and ceiling surfaces are also provided. Similarly, the one corresponding to the shape and size of the large casting is appropriately fixed, but if the area of the hopper 1 with a great grade which is at least several times the size of the bottom surface of the cabinet 6 is provided, If the polishing work is carried out by moving the cabinet 6, the dust generated during the cleaning work will be removed from the large mold without leaking out of the cabinet 6, and foreign matters such as shot sand and slag will be stored in the hopper 1 with a great grade. Since dust is collected by the dust collecting duct which is dropped and is connected to the end of the hopper 1 with the grates, on the other hand, the work of unraveling a large-sized casting frame can be performed at the same time in preparation for the next blasting work. For this reason, since the doors 7 and 7 that can be rolled up and opened are provided on the front and rear surfaces of the cabinet 6, the entire surface of the hopper with a great grade 1 can be used effectively, and the work efficiency and the work environment can be improved efficiently. is there.

[0009]

INDUSTRIAL APPLICABILITY According to the present invention, a plurality of centrifugal projectors can be used for casting sand and shots without performing frame removal work on the hopper 1 with a great grade so as to reduce the handling process of a large casting, and at the same time without moving it from there. A cabinet 6 equipped with a recovery and regeneration mechanism that performs recovery and regeneration separation freely moves on the hopper 1 with a great grade, and surrounds such a large casting, and simultaneously removes sand from the large casting, crushes the sand lumps, and performs blasting treatment. Since it is performed, it has excellent advantages such as improving work efficiency and working environment without leaking foundry sand and dust to the outside and contributing to unprecedented productivity improvement. is there.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a front view of the above.

FIG. 3 is a plan view of the above.

[Explanation of symbols]

 1 Great Hopper 2, 3 Vibration Conveyor 4 Orbit 5 Wheels 6 Cabinet 7 Openable Doors 8, 14 Bucket Elevator 9 Screw Conveyor 10 Shot Separator 11 Shot Hopper 12 Centrifugal Projector 13 Shot Introducing Pipe

Claims (1)

[Claims] 1. A hopper with a grate is embedded in a relatively wide area, and a means for discharging the hopper with a grate from below is provided to the outside of the hopper with a grate. It has an openable door and at the same time a plurality of centrifugal projectors are installed on the left and right sides and the ceiling surface. Furthermore, a movable cabinet equipped with a shot collection and reproduction mechanism is installed on the side and top surfaces from the hopper with a great grade. A mobile shot blasting device characterized in that the foundry sand and shots that are collected can be recycled to the collection and regeneration mechanism on the cabinet.