JP2556988B2 - Stone continuous grinding and polishing equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a polishing liquid recovery device in a stone continuous grinding and polishing device.

[Prior Art] FIG. 3 is a front view showing a conventional apparatus and method for continuously grinding and polishing a surface of a stone material, in which R is a rough grinding step, F is a finish grinding step, and P is a grinding step. Polishing step, 1 is a stone material, 2 is a belt conveyor, 3 is a grinding tool, and 4 is a polishing tool.

Generally, in the grinding and polishing process of stone materials, as shown in the figure, the stone material 1 is placed on a conveying facility such as a belt conveyor 2 shown in
This is performed by the work of continuously grinding and polishing the surface of the stone material 1 which is moved by the conveyor 2 by the rotating grinding and polishing tools 3, 4. Among the grinding and polishing processes, the grinding process is for finishing the stone material thickness evenly, the grinding tool is one that has diamond chips embedded in the grinding surface, and the polishing process is for polishing the stone surface. The tool is a grindstone or buff. Water is usually used as a working fluid for both grinding and polishing, and the used water is discarded.

[Problems to be Solved by the Invention] Regarding the method of polishing stone materials (tiles), the applicant previously replaced the conventional polishing apparatus using a grindstone or a buff with the abrasive grains fixed to the shock absorber as the polishing tool. A new polishing method is applied, in which a non-abrasive elastic body is used and a polishing liquid in which free abrasive grains are suspended is used as a working liquid. In the above continuous grinding and polishing apparatus utilizing this new polishing method, normal water is used as the working fluid in the grinding steps R and F, but in the polishing step P, the above polishing solution is used. In this case, the grinding liquid containing the fine tile powders in the grinding processes R and F is discarded, but the polishing liquid used in the polishing process has expensive loose abrasive grains suspended therein, so naturally, it is recovered. Must be used cyclically.

However, in the above continuous grinding / polishing device, since the same conveying device is used for grinding and polishing, if it is attempted to recover only the polishing liquid in the state as it is, it contains the fine stone particles of the grinding step in the polishing liquid. It is unavoidable that the grinding liquid is mixed, and the performance of the polishing liquid is deteriorated due to the decrease of the concentration of the polishing liquid and the mixing of the grinding liquid waste. Therefore, in recovering the polishing liquid, the technique of separating and recovering only the polishing liquid is the biggest problem.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a means for collecting only a polishing liquid, which prevents the mixing of a grinding liquid waste.

[Means for Solving the Problems] In order to achieve the above object, in a continuous grinding and polishing apparatus for stone material according to the present invention, a receiving trough arranged below a conveying device in a polishing step and a polishing solution for storing a polishing solution. It comprises a storage tank, a polishing liquid pump and piping for sending the polishing liquid in the storage tank to the polishing process, and an air ejector arranged at the boundary between the polishing process and the polishing process and at the end of the polishing process above the transfer device. The polishing liquid recovery device is provided. The air ejector is formed, for example, by forming a large number of small holes in the lower portion of the circular pipe.

[Operation] While the continuous grinding and polishing apparatus for stones is in operation, the polishing liquid used in the polishing process drops from the transfer device into the receiving trough, and further flows into the polishing liquid storage tank and is stored in the storage tank. The polishing liquid in the storage tank is sent to the polishing process by the pump and the pipe and is used again for polishing. That is, the polishing liquid can be collected and recycled.

By ejecting air onto the upper surface of the transfer device from the air ejectors arranged before and after the polishing process, a blocking wall with an air curtain is formed on the transfer device. It is possible to prevent the waste liquid of the grinding process from flowing into the polishing process and the polishing liquid from flowing into the polishing process. Therefore, the phenomenon that the grinding processing waste liquid is not mixed into the polishing liquid or the polishing liquid flows out and disappears is eliminated.

[Embodiment of the Invention] FIG. 1 is a front view of a grinding and polishing apparatus for a stone material, which is an embodiment of the present invention, and FIG.
R, F and P are the same or corresponding parts as the conventional device, 10 is a receiving trough, 11 is a polishing liquid storage tank, 12 is a pump and piping, 13 is an air ejector, 14 is an air source, and 15 is an air curtain.

In the figure, the polishing liquid flows into and is stored in the polishing liquid storage tank 11 from the transport device 2 in the polishing step P via the liquid receiving trough 10. The polishing liquid in the storage tank 11 is sent to the polishing step P again by the pump and the pipe 12. That is, the polishing liquid is collected and circulated.

Further, an air ejector 13 is arranged above the transport device 2 before and after the polishing step P. The air ejector 13 has a large number of small holes formed in a steel pipe, blows air supplied from an air source 14 onto the conveying device 2 from the small holes, and an air curtain 15 slightly longer than the width of the conveying device 2. Are formed so that When air is ejected toward the transfer device during the grinding and polishing operations, it is blocked by the air curtain 15 formed on the transfer device 2 so that the grinding waste liquid is transferred to the polishing step P and the polishing liquid is transferred to the grinding step F. Since it does not flow in, mixing of the grinding waste liquid and the polishing liquid is prevented.

A slit may be formed instead of the small hole of the air ejector 13, and the material thereof is not limited to the steel pipe.

Also a receiving trough. The material and specifications of the storage tank or pump and piping are not particularly limited.

[Advantages of the Invention] In the continuous grinding and polishing apparatus of the present invention, a liquid receiving trough disposed below a conveying device in a polishing step, a polishing solution storage tank for storing a polishing solution, and a polishing solution in the storage tank are sent to the polishing step. Since a polishing liquid pump and piping, and a polishing liquid recovery device composed of an air ejector arranged above the transfer device before and after the polishing process are provided,
It has become possible to collect and circulate a polishing liquid in which expensive abrasive grains are suspended without mixing the waste liquid of the grinding process in the grinding process.

[Brief description of drawings]

FIG. 1 is a front view of a stone continuous grinding / polishing apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of an essential part thereof, and FIG. 3 is a front view of a conventional stone continuous grinding / polishing apparatus. . In the figure, 1 is a stone material, 2 is a belt conveyor, 10 is a receiving trough, 11 is a polishing liquid storage tank, 12 is a pump and piping, 13 is an air ejector, 14
Is an air source and 15 is an air curtain. The same reference numerals in the drawings indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Minoru Iseta 1-44-19 Komaba, Meguro-ku, Tokyo Mitsui Kinzoku Dormitory 5-2 (56) References JP-A-60-191749 (JP, A) JP-A-58 -45851 (JP, A) JP-A-59-227361 (JP, A) Actually developed Shou 62-138565 (JP, U)

Claims (1)

(57) [Claims] 1. A plurality of stone materials mounted on a transfer device,
In a stone continuous grinding / polishing device that continuously grinds and polishes with a grinding tool and a polishing tool while transporting with the transport device, a device for collecting and circulating a polishing liquid of the device is a transport device for a polishing process. Liquid receiving gutter provided in the lower part of the tank, a polishing liquid storage tank for receiving and storing the polishing liquid from the liquid receiving gutter, a polishing liquid pump and piping for sending the polishing liquid in the storage tank to the polishing process, a grinding process and a polishing process. And an air ejector configured to eject air onto the upper surface of the transfer device to form an air curtain on the upper surface of the transfer device at the boundary portion of the transfer device and the end portion of the polishing process. Stone continuous grinding and polishing equipment.