JP2751091B2 - Cutting fluid filtration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for filtering a cutting fluid containing cutting chips discharged in a metal cutting operation by a machine tool.

[0002]

2. Description of the Related Art Conventionally, various devices have been proposed as filters for filtering a cutting fluid containing swarf and put to practical use. Among them, a general one is such that a filter drum with a filter attached around it is rotatably installed in a tank, a cutting fluid is supplied inside the filter drum, and the cutting fluid is supplied into the filter drum. In some cases, the cutting fluid is separated into cutting fluid and cutting fluid, and the cutting fluid is carried out of the filtering drum, while the cutting fluid from which the cutting powder has been removed flows out into a tank.

However, in the above-mentioned filtration device, since the cutting fluid is introduced into the filtration drum, the weight of the cutting fluid is applied to the filtration drum. Therefore, special consideration must be given to the mechanism for attaching the filtration drum to the shaft. Special consideration must also be given to the means for collecting chips separated from the cutting fluid inside the filter drum inside the filter drum and for transporting the collected chips outside the filter drum. There was a problem.

[0004] In order to solve the above-mentioned problems, a filtration device described in Japanese Patent Publication No. 2-44564 has been proposed. This filtering device is provided with a cutting fluid charging section in a cutting fluid charging tank, a rotatable filtering member having a filter cloth adhered to an outer periphery thereof, and a conveyor having a scraping member attached to an outer surface thereof. It is installed in relation to the filtration member, and the filtration member is rotated if the conveyor is driven by a motor, and the cutting fluid input section is connected to a cutting fluid discharge section of a cutting machine to receive the cutting fluid. The input cutting fluid is filtered by a rotating filter member installed in the input tank, separated from cuttings, and discharged from a discharge unit provided on one side of the input tank, The chips are settled at the bottom of the cutting fluid charging tank, scraped off by the scraping member of the rotating conveyor, and discharged from the top of the charging tank. To prevent clogging due to adhesion , So that washing with injection nozzles in the interior of the filtration member.

[0005] This filtering device is installed and used on the side of a cutting machine, and cannot be made too large. The cutting fluid is discharged only from one side of the filter member. Therefore, the range of selection of cutting fluid reception is narrow, and the filter member must be enlarged in order to keep the amount of filtered cutting fluid constant. However, there is a problem that the cost is limited or the cost increases.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, the present invention has a wide selection range of cutting fluid reception,
An object of the present invention is to provide a cutting fluid filtering device that can efficiently filter a cutting fluid even when the size of a filtering member is small, and can efficiently discharge the filtered fluid.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has a structure comprising a filter having a height which can be arranged at a portion where a cutting fluid falls under a bed of a cutting machine. One end side of the tank extends obliquely upward, a motor is mounted on the upper end thereof, and a conveyor in which a scraping member is attached to the outer surface of the filtration tank at appropriate intervals is provided, and the conveyor is provided with the conveyor. While being driven by a motor, the rotor driven by the conveyor is rotatable on both the left and right sides of the extension boundary of the filtration tank via left and right hollow shafts integrally attached thereto. The filter member is attached to the outer periphery of the rotor to form a filter member, and an injection nozzle for backwashing the filter cloth from the inside is provided inside the filter member. Conveyor scraping section at the upper end Forming a discharge portion of the swarf conveyed by the shaft, and discharging the filtered cutting fluid from the left and right hollow shafts similarly supported on both sides of the extended boundary portion. .

[0008] That is, in the filtration device of the present invention, the filtration tank is formed so as to be widely arranged at the lower part of the bed of the cutting machine where the cutting fluid falls, thereby widening the range of receiving the cutting fluid, thereby reducing the amount of cutting chips. A specific gravity sorting of the cutting fluid is performed in advance, and a conveyor provided with an extending portion provided at one end side of the filtration tank diagonally upward and a scraping member attached from the upper end side to the other end of the filtration tank is installed. And a filter member made of a filter cloth and a rotor which is driven and rotated together with a conveyor, is provided on the extended boundary side of the filter tank, and is integrated with the rotor supported on both sides of the filter tank. By removing the filtered liquid from the hollow shaft through which the cutting powder has been removed by the filter member, the size of the filter member can be reduced, and the filtration efficiency can be increased.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of an example of the present invention, FIG. 2 is an enlarged front view of a filtering member, and FIG. 3 is a side view of FIG.

In the drawing, reference numeral 1 denotes a filter tank formed at a lower portion of a bed of a cutting machine at a height which can be disposed at a portion where a cutting fluid falls, and 1a denotes an end of one side of the filter layer 1 obliquely upward. An extension 1b is formed on the upper surface of the intermediate portion of the filtration tank 1 and a cut-in port for cutting fluid containing cutting chips formed in a required width. 2 is an extension 1a. The motors 2a, 3 mounted on the upper end of the chain wheel are arranged in the upper end of the extension portion 1a and driven by the motor 2, and the wheel 3a is the chain wheel 2.
a, a chain around 3; 4, a chain wheel rotatably arranged at the other end of the filtration tank 1;
If the chain conveyor 5 is mounted on a chain conveyor (not shown in the figure) coaxially with the chain wheel 3 and a chain wheel 4 and the motor 2 is driven, the chain conveyor 5 is rotated in the direction of the arrow. It works.

Reference numeral 7 denotes a filtering member, which comprises two hollow shafts 72, 72 integrally attached with two rotors 71, 71 driven by a chain of the chain conveyor 5, respectively, and a filtering tank 1 and an extending portion. It is rotatably supported on the side of the boundary with 1a, and a filter cloth 73 is attached to the outer periphery between the two rotors 71, 71. The filter cloth 72 is usually made of a special nylon, and the upper side of the extending portion 1a is formed slightly higher for installing the filter member 7.

Reference numeral 8 denotes a spray nozzle disposed inside the filter member 7 via the hollow shaft 72, for backwashing suspended matter such as paint residue adhering to the outside of the filter cloth 73.
In the drawing, reference numeral 9 denotes a discharge portion provided above the extension portion 1a for discharging cutting chips such as cutting chips, and 10 denotes a caster attached to the filtration tank 1.

The filtering device for cutting fluid of the present invention is constituted as described above, and its operation is as follows. First, when the filter tank 1 is arranged by applying the cutting fluid inlet 1b to a portion where the cutting fluid falls under the bed of the cutting machine, the cutting fluid contaminated with the cutting powder of the cutting machine is removed. 1 falls inside. On the other hand, when the motor 2 is driven, the chain conveyor 5 rotates in the direction of the arrow, and
1, 71, that is, the filtering member 7 rotates. At this time, since a clean liquid is jetted from the jet nozzle 8 in the filter member 7, the filter cloth 73 is backwashed from the inside with the liquid.

According to the above operation state, the cutting fluid accumulated in the filter tank 1 is filtered by the filter cloth 73 in the rotating filter member 7, and cutting chips such as cutting powder and paint residue are removed from the filter tank 1.
Only the clean cutting fluid left inside enters the inside of the filtering member 7, and the clean cutting fluid and the clean fluid sprayed from the spray nozzle 8 and falling into the inside of the filtering member 7, When the liquid level reaches above the lower part of the hollow shafts 72, 72 on both sides, the liquid overflows outside the two hollow shafts 72, 72 and is collected,
Used again during cutting work.

On the other hand, cutting chips such as cutting chips settled in the filtration tank 1 are moved in the direction of the arrow by a scraping member 6 attached to the outer periphery of the chain conveyor 5, and rise in the extending portion 1a to be discharged. Discharged from 9 and disposed of.

The cutting fluid flowing into the tank 1 may include suspended matter such as paint residue in addition to the cutting powder, but the suspended matter does not settle in the filtration tank 1 and is filtered. 73
Adheres to the surface of The deposit is back-washed by the injection of the clean liquid from the injection nozzle 8 and falls into the filtration tank 1.
And is discharged from the discharge unit 9.

Accordingly, in the cutting fluid containing cutting chips and the like, only clean liquid is left in the filtering member 7 by removing the cutting chips and the like in the filtering member 7, and the cutting fluid is hollow together with the liquid jetted from the jet nozzle 8. Since the spills from the shafts 72, 72 to both sides of the filtration tank 1, the chips are efficiently collected. On the other hand, cutting chips such as cutting chips are lifted to the discharge section 9 and discharged therefrom.
Since it is possible to labor-savingly collect and dispose of the cutting chips only by disposing the cutting chips and transporting the containers below the discharge part 9, the filtering operation of the cutting fluid can be efficiently performed together with the collection of the cutting chips.

[0018]

The present invention is as described above, and the filter tank is formed long at a height that can be arranged below the bed of the cutting machine, so that the receiving range of the cutting fluid can be set widely. The specific gravity of the cutting fluid and the cutting fluid can be selected in the longitudinal direction of the filtration tank, and the filtered cutting fluid can be discharged from the hollow shafts on the left and right sides integrated with the rotor. Since the outer diameter can be reduced, the entire apparatus can be formed compact. In the cleaning operation, if the filter tank is pulled out of the cutting machine, the entire apparatus or a required portion can be cleaned extremely easily.

[Brief description of the drawings]

FIG. 1 is a front view of an example of the present invention.

FIG. 2 is an enlarged front view of a filtering member.

FIG. 3 is a side view of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filtration tank 1a Extension part of filtration tank 2 Motor 3, 4 Wheel 5 Chain conveyor 6 Scraping member 7 Filter member 71 Rotor 72 Hollow shaft 73 Filter cloth 8 Injection nozzle 9 Discharge part of cutting powder etc.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B01D 33/58 B23Q 11/10

Claims (1)

(57) [Claims] 1. A filter tank having a height which can be arranged at a lower portion of a bed of a cutting machine at a position where a cutting fluid falls, is extended obliquely upward at one end side, and a motor is mounted on the upper end thereof, and the filtration is carried out. A conveyor in which a scraping member is mounted on the outer surface of the tank at appropriate intervals is provided, and the conveyor is driven by the motor. On the other hand, a rotor driven by the conveyor is integrally mounted with the conveyor. The filter is rotatably mounted on the left and right sides of the extending boundary of the filter tank via the right hollow shaft, and a filter member is formed by attaching filter cloth to the outer periphery of the rotor. An injection nozzle for backwashing the filter cloth from the inside is disposed inside the filter tank, and a discharge section for cutting chips conveyed by a scraping member of a conveyor is formed at the upper end of the filter tank. Left and right inside supported on both sides of the boundary A filtering device for cutting fluid, wherein the filtered cutting fluid is discharged from an empty shaft.