JP3363064B2 - V process mold sand treatment method and equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating V process mold sand, in which the V process mold after pouring is separated, and the sand separated from the casting is stored, transported, and cooled, and equipment for implementing the method. .

[0002]

2. Description of the Related Art The step of carrying out the above sand treatment in a casting line by the V process method is well known. The process will be specifically described below. In order to remove the casting from the casting mold after pouring, the casting mold is first separated on the grid grid to separate the casting and sand. The separated sand passes through the grid grid and is temporarily stored in the hopper. After that, the sand is conveyed by a constant amount to a subsequent process by a conveyor. By the way, since the sand after being separated from the casting has a high temperature, it is necessary to cool it to an appropriate temperature. Therefore, the sand is passed through the cooling device during the transportation. Such a process is a general process for treating V process mold sand.

[0003]

In the equipment for carrying out the sand treatment process as described above, it is usually the case that each device is usually installed independently. As a result, a corresponding equipment cost is required, and a large amount of installation space is required. The present invention has been made to solve the above-mentioned problems, and has a lower equipment cost and a smaller installation space than conventional ones, and a method for treating V process mold sand and a method for implementing the same. The purpose is to provide equipment.

[0004]

Means for Solving the Problems] V process molding sand processing method of the present invention to solve the above problem, in transporting the mold sand shakeout at a screw conveyor, V, characterized in that the cooling at the same time Process mold sand treatment method
And the rotation of the screw of the screw conveyor
You can adjust the temperature of the sand by changing the speed.
And are characterized. Further, in the V process mold sand processing equipment of the present invention, a dust hood is provided on the upper part of the grid grid for disassembling the mold, a hopper is provided on the lower part, and a screw conveyor in which a casing is surrounded by a water cooling jacket is connected and connected to the lower part of the hopper. It is characterized by having done. Furthermore, in the V process mold sand treatment facility,
It is preferable that the rotation speed of the screw of the screw conveyor be variable by inverter control.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a V process mold sand treatment facility according to the present invention. Reference numeral 1 is a dust hood, in which the metal frame W after pouring can be accommodated. A grid 2 is provided below the dust hood 1, and a hopper 3 is provided below the grid. A screw conveyor 4 is provided below the hopper 3. The screw conveyor 4 comprises a screw 6 driven by a motor 5, a casing 7 in which the screw 6 is housed, a water cooling jacket 8 mounted so as to surround the casing 7, and a sand outlet 9. Water of 32 degrees or less is constantly circulated in the water cooling jacket 8.

A method of disassembling the mold and treating the separated sand by the V process mold sand treatment facility configured as described above will be described below. The metal frame W containing the mold after pouring is carried into the dust hood 1 and placed on the grid grid 2, and the mold is separated to separate the casting and the sand. The separated sand passes through the grid grid 2 and enters the hopper 3, where it is temporarily stored. The sand then enters the casing 7. In the casing 7, the screw 6 is rotated by the drive of the motor 5 to convey the sand in the casing 7 to the sand outlet 9. At this time, the water cooling jacket 8 attached to the outer peripheral portion of the casing 7 cools the casing 7, whereby the sand being conveyed is cooled. To adjust the sand temperature, the motor 5
The rotation speed of the screw 6 is controlled by an inverter to change the rotation speed of the screw 6. Then, the sand transport speed can be adjusted, and as a result, the sand cooling time by the water cooling jacket 8 is increased or decreased, and the sand temperature can be adjusted.

[0007]

As is apparent from the above description, the V process mold sand treatment method and the equipment for carrying out the method according to the present invention can remove the separated sand by the water cooling jacket mounted so as to surround the casing of the screw conveyor. Since it is configured to cool during transportation, it is not necessary to provide an independent sand cooling device, and cost reduction and space saving can be realized at the same time. Further, according to the present invention, the temperature of sand can be appropriately adjusted by changing the rotation speed of the screw.

[Brief description of drawings]

FIG. 1 is a front view of a V process mold sand treatment facility showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

[Explanation of symbols]

1 Dust Hood 2 grid grid 3 hoppers 4 screw conveyor 6 screws 7 casing 8 water cooling jacket

Claims (3)

(57) [Claims] 1. The separated molding sand on a screw conveyor
V process characterized by cooling at the same time during transportation
A smold sand treatment method, wherein the screw conveyor
By changing the rotation speed of the screw,
V process mold sand treatment characterized by adjusting temperature
Method. 2. A V process for transporting loose mold sand
A mold sand treatment facility, which is a grid-like grid for separating molds.
The dust hood 1 is installed on the upper part of the
The hopper 3 is provided, and the casing 7 is water-cooled under the hopper 3.
Connect the screw conveyor 4 surrounded by the jacket 8
V process mold sand treatment facility characterized by being connected through
Be prepared. 3. The V process mold sand treatment facility according to claim 2.
In the screw 6 of the screw conveyor 4
Features that the rotation speed is variable by inverter control
V process mold sand treatment equipment.