JPH08197372A - Separative collection device for cutting oil - Google Patents

Abstract

PURPOSE: To separate and collect cutting oil as much as possible from chips by providing a cutting oil separation device to separately collect the separated and removed cutting oil and chips as well as to separate and remove the cutting oil from the chips. CONSTITUTION: Chips 9 input in a rotating tank 22 of a cutting oil separation device rise along an inner peripheral surface 22a. Cutting oil 8 attached to the cutting chips 9 is separated from the chips 9 and flies out of the rotating tank 22 from a slit 23. Additionally, the cutting chips 9 from which the cutting oil 8 is separated and removed fly out of the rotating tank 22 from a discharge port 24b of a cover 24. The cutting oil 8 from which the chips 9 are almost perfectly removed flows in an oil pipe, quantitative measuring equipment and an oil pipe and is supplied to a cutting oil collection tank or directly to a machine tool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating and collecting cutting oil used for removing cutting chips from a processing area of a machine tool for cutting.

[0002]

2. Description of the Related Art When a work such as a steel material is cut by a machine tool, it is necessary to continuously remove cutting chips from a working region where a working tool cuts the work. Therefore, cutting oil is constantly sprayed to the processing area for the purpose of removing cutting chips in the processing area and cooling the processing tool or the work. This cutting oil is supplied from a cutting oil storage tank provided outside the machine tool and is collected in a cutting oil recovery tank together with cutting chips. Since the cutting chips settle on the bottom of the cutting oil recovery tank, the set cutting chips are carried out and collected by a carrying-out means such as a conveyor. By the way, it is economical to collect and reuse the cutting oil used for the above purposes as much as possible. In addition, it is desirable to remove cutting oil from cutting waste as much as possible in order to protect the environment and reduce the work load of collecting cutting waste.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to separate as much cutting oil as possible from cutting waste discharged together with the cutting oil from a machine tool. The purpose is to obtain a cutting oil separating and collecting apparatus that can collect the cutting oil.

[0004]

In order to solve the above problems, a cutting oil separating and collecting apparatus according to the present invention is provided with a cutting oil storage tank for storing cutting oil to be supplied to a machining area of a machine tool, and a cutting oil storage tank. A cutting oil recovery tank that collects the cutting oil discharged together with scraps to the outside of the processing area, a unloading means that carries out the cutting scraps in this cutting oil recovery tank to the outside of the cutting oil recovery tank, and a cutting oil recovery tank to the outside A cutting oil separating device which is arranged and receives cutting waste conveyed by the conveying means to separate and remove cutting oil from the cutting waste and separately collect the separated and removed cutting oil and cutting waste. ,
The cutting oil separating device is characterized in that the cutting oil separating device comprises oil feeding means for conveying the cutting oil separated and removed from the cutting scraps to either the cutting oil storage tank, the cutting oil recovery tank or the machine tool. Is rotatably provided in the opened housing, has an inner peripheral surface inclined from the tank bottom toward the opening at the upper end, and has a number of slits formed near the opening for discharging cutting oil. A rotary tank, a rotation driving means for rotating the rotary tank, and the opening of the rotary tank, and when the rotary tank rotates, the cutting waste in the tank can be discharged to the outside by centrifugal force. A cover in which a discharge opening for cutting chips is formed on the periphery of the opening so that the rotary tank can be housed and the cutting oil discharged from the tank through the slit by the rotation of the rotary tank can be collected. Off A centrifugal separator composed of an oil collection box,
The device may be provided below the centrifuge and configured to include a cutting waste collecting means for collecting the cutting waste discharged from the rotary tank. Further, the cutting oil separation device,
A storage part for temporarily storing the cutting oil separated and removed from the cutting waste by the centrifugal separator, and a state having magnetism and a part of the outer peripheral surface immersed in the cutting oil of the storage part An adsorbent that is rotatably provided and that adsorbs cutting chips remaining in the cutting oil while rotating, and scrapes the cutting chips that are adsorbed on the outer peripheral surface of the adsorbent by the rotation of the adsorbent with a scraper. You may provide the separator which consists of a cutting waste discharge means and the drive source which rotates the said adsorption body.

[0005]

Since the present invention is constructed as described above, it operates as follows. Cutting oil is stored in the cutting oil storage tank, and the cutting oil is supplied from the cutting oil storage tank to the processing area of the machine tool. The cutting oil discharged to the outside of the processing area together with the cutting waste is collected in a cutting oil recovery tank.
The cutting waste carrying-out means carries out the cutting scraps precipitated in the cutting oil recovery tank to the outside of the tank. A cutting oil separating device for separating and removing cutting oil from the cutting scraps is arranged at the terminal end of the cutting scraps carrying-out means, and the cutting oil separated and removed from the cutting scraps by the cutting oil separation device is fed with oil. It is returned to the cutting oil storage tank, the cutting oil recovery tank or the machine tool by means.

In the cutting oil separating device provided with the centrifugal separator and the cutting waste collecting means, the cutting scrap from which the cutting oil is almost completely removed by the centrifugal separation is collected by the collecting means. That is, since the inner peripheral surface of the rotary tank is formed in a tapered shape, when the rotary tank rotates at high speed, the cutting chips move from the bottom side to the upper side of the rotary tank along the inner peripheral surface. The cutting oil is collected in the collection box through the slit, and the cutting chips from which the cutting oil has been separated and removed are discharged from the outlet of the cover to the outside of the centrifuge and are collected by the cutting chips collection means. Also,
In a cutting oil separation device provided with a separator in addition to the centrifugal separator and the cutting waste collecting means, fine cutting scraps are adsorbed and removed from the cutting oil removed and collected from the cutting scraps by the centrifugal separator. High-purity cutting oil can be regenerated. The cutting oil from which the cutting chips have been completely removed in this manner is returned to the cutting oil storage tank or the processing area by the oil feeding means and is used again as cutting oil.

[0007]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view showing the overall configuration of a cutting oil separation and recovery apparatus of the present invention. In addition, in FIG. 1, the arrow indicates the direction in which the cutting oil circulates. The cutting oil 8 is stored in a cutting oil storage tank 3 arranged near the machine tool 2. When cutting of a work such as steel is started, the pump 10 is driven by the drive of the motor M, and the cutting oil 8 in the cutting oil storage tank 3 is supplied to the processing area of the machine tool 2 through the oil feed pipe 11. To be done. The cutting oil 8 is jetted toward the work or the processing tool to remove the cutting waste 9 from the processing area. The cutting waste 9 removed from the processing area is the cutting oil 8
At the same time, it flows through the oil feed pipe 12 and is collected in the cutting oil recovery tank 4. The cutting oil recovery tank 4 has a first conveyor 5 for carrying out the cutting chips 9 deposited on the bottom of the tank and a second conveyor 5 for collecting and carrying out the fine cutting chips 9 floating in the cutting oil 8. And 13 are provided. The first conveyor 5 and the second conveyor 13 constitute a means for carrying out the cutting waste 9.

The second conveyor 13 has a large number of roller-shaped adsorbents 13a, 13a, ... Each of the adsorbents 13a, 13a, ... Is adapted to rotate in the same direction (clockwise in the case of this embodiment) by a rotation drive mechanism (not shown).
The cutting chips 9 attached to the outer peripheral surface of the adsorbent 13a can be sequentially fed. The end of the second conveyor 13 extends to the outside of the cutting oil recovery tank 4, and the tip thereof is located near the first conveyor 5. The cutting waste 9 attached to the adsorbent 13a is scraped off by the scraper 13b or the like, and falls onto the first conveyor 5. The cutting wastes 9 conveyed on the first conveyor 5 are transferred to the third conveyor 6 arranged near the end of the first conveyor 5.

A cutting oil separating device 7 for separating and removing the cutting oil 8 from the cutting waste 9 carried out from the cutting oil recovery tank 4 is arranged at the end of the third conveyor 6. Cutting scraps 9 from which cutting oil 8 has been removed by this cutting oil separation device 7.
Is carried out from the cutting oil separation device 7 by a cutting waste recovery truck 40 (see FIG. 2), etc., and the cutting oil 8 separated and removed from the cutting waste 9 flows through the oil feeding pipe 14 and is sent to the quantitative measuring device 16. The quantitative measuring device 16 returns the fixed amount to the cutting oil recovery tank 4 through the oil feeding pipe 15.

FIG. 2 is an enlarged schematic view for explaining the structure of the cutting oil separation device 7. A centrifugal separator 20 for separating and removing the cutting oil 8 from the cutting waste 9 is provided in the cutting oil separation device 7.
And a separator for temporarily storing the cutting oil 8 separated and removed from the cutting waste 9 by the centrifugal separator 20 and further removing the mixed fine cutting waste 9 to obtain the cutting oil 8 of high purity. 30, a guide plate 7c for receiving the cutting wastes 9 discharged and dropped from the centrifuge 20 and the separator 30, and the cutting wastes 9 collected by the guide plate 7c, and appropriately carried out from the cutting oil separation device 7. It is composed of a cutting debris recovery truck 40. The centrifuge 20 and the separator 30 are connected to each other by a connecting pipe 7b so that the cutting oil 8 separated and removed from the cutting waste 9 by the centrifuge 20 can flow to the separator 30. The oil feed pipe 14 is connected to the container 30. If the centrifugal separator 20 alone can regenerate the cutting oil 8 having sufficient purity, the oil feed pipe 14 may be directly connected to the centrifugal separator 20 and the separator 30 may not be provided.

FIG. 3 is an enlarged explanatory view of the centrifugal separator 20 provided in the cutting oil separator 7. A rotary tank 22 is provided in a housing 21 of the centrifuge 20 having an open bottom so as to be rotatable at high speed. The rotary tank 22 is supported by a shaft 28, and a pulley 28a is attached to the end of the shaft 28. A motor 26 is provided outside the housing 21 via a bracket 25b, and a belt 27 is stretched between a pulley 26a and a pulley 28a attached to a rotation shaft of the motor 26. Reference numerals 29 and 29 are cases 2
Bearings for rotatably supporting the shaft 28 within the shaft 5, reference numeral 2
Reference numeral 1a is a cutting waste charging port of the housing 21. The inner peripheral surface 22a of the rotary tank 22 is formed so that the inner diameter gradually increases from the tank bottom to the opening at the upper end and is inclined. The opening of the rotary tank 22 is covered with a cover 24 having a charging port 24a through which the cutting waste 9 is charged in the center.
The cutting waste 9 that has fallen from the end of the conveyor 6 is introduced into the rotary tank 22 through the introduction port 7a of the cutting oil separation device 7 and the introduction port 24a of the cover 24.

A minute projection 22b is formed around the entire circumference of the opening of the rotary tank 22. This protrusion 22
b is for preventing the cutting oil 8 from rising along the inner peripheral surface 22a due to the rotation of the rotary tank 22 and releasing the cutting oil 8 from the opening of the rotary tank 22. And
Below the protrusion 22b, the rotary tank 22 along the protrusion 22b
A large number of slits 23 for discharging the cutting oil 8 out of the tank are formed in parallel at equal intervals over the entire circumference of.
The slit 23 is formed so as to be inclined with respect to the rotation axis of the rotary tank 22, and is formed as narrow as possible so that the cutting waste 9 can be prevented from passing therethrough and only the cutting oil 8 can pass therethrough. ing. The rotary tank 22 is housed in a cutting oil recovery box 25, and the rotary tank 2 is inserted from the slit 23.
The cutting oil 8 discharged to the outside of 2 collides with the inner wall 25a of the cutting oil recovery box 25 and flows down to the bottom side of the cutting oil recovery box 25, and at this bottom part, the connection is made below the cutting oil recovery box 25. It is designed to flow into the tube 7b. The cover 24 covering the opening of the rotary tank 22 has a discharge port 24b for the cutting waste 9 formed along the periphery of the opening of the rotary tank 22. The cutting chips 9 that have risen along the inner peripheral surface 22a due to the rotation of the rotary tank 22 are discharged from the discharge port 24b.
Jump out of. The cutting waste 9 that has jumped out of the rotary tank 22 collides with the inner wall of the housing 21 and falls.

FIG. 4 is an enlarged explanatory view of the separator 30 provided in the cutting oil separation device 7. Main body 31 of the separator 30
Inside, there is a concave first storage portion 32a in order from the connecting pipe 7b side.
And the 2nd storage part 32b is installed in parallel. Connecting pipe 7b
The cutting oil 8 that has flowed from the centrifugal separator 20 through the first is first stored in the first storage portion 32a. First reservoir 32
The cutting oil 8 overflowing from a flows into the second reservoir 32b. A magnetic drum-shaped adsorbent 34 is rotatably provided on the side of the second storage portion 32b in the main body 31, and a part of the outer peripheral surface thereof is cut stored in the second storage portion 32b. It is designed to be immersed in the oil 8. The adsorbent 34 can be always rotated in one direction (counterclockwise in this embodiment) by a motor 33 provided in the main body 31, and the cutting oil 8 stored in the second storage portion 32b is used. The fine cutting chips 9 are adsorbed from the. The cutting waste 9 adsorbed by the adsorbent 34 is scraped off by a scraper 35a provided above the main body 31 of the second storage portion 32b.
Since the scraper 35a is provided at one end of the gutter 35 serving as a cutting waste discharging means provided so that the other end thereof protrudes to the outside of the main body 31, the cutting waste 9 scraped by the scraper 35a is removed from the gutter 35. Flowing through the groove of the gutter 35 and falling outside the main body 31 from the other end of the gutter 35. The cutting oil 8 overflowing from the second reservoir 32b is fed to the oil feed pipe 1 connected to the main body 31.
4 and then to the quantitative measuring device 16.

Next, the operation of the present invention having the above construction will be described. The cutting oil 8 stored in the cutting oil storage tank 3 is sent to the processing area of the machine tool, and the cutting oil 8 discharged from the processing area together with the cutting waste 9 is collected in the cutting oil recovery tank 4. Since the relatively large cutting dust 9 settles on the bottom of the cutting oil recovery tank 4, the cutting dust 9 is carried out of the cutting oil recovery tank 4 by the first conveyor 5. Since the fine cutting wastes 9 do not easily settle on the bottom of the cutting oil recovery tank 4, they are adsorbed by the adsorbent 13a of the second conveyor 13 and are sequentially sent by the rotation of the adsorbent 13a, and are sequentially sent. It is discharged outside. The cutting wastes 9 discharged to the outside of the cutting oil recovery tank 4 are transferred to the second conveyor 6, transported, and fed into the cutting oil separation device 7.

The rotary tank 22 is constantly rotated at a high speed by driving a motor 26. In addition, since the inner peripheral surface of the rotary tank 22 is formed in an inclined shape, the cutting waste 9 introduced into the rotary tank 22 rises along the inner peripheral surface 22a. The cutting oil 8 adhering to the cutting waste 9 is separated from the cutting agent by the centrifugal force and is ejected from the slit 23 to the outside of the rotary tank 22. Further, the cutting oil 8 is separated from the discharge port 24b of the cover 24,
The removed cutting scraps 9 jump out of the rotary tank 22. Since the protrusion 22b is provided on the periphery of the opening,
The cutting oil 8 reaching the projection 22b is prevented from further rising by the projection 22 and is discharged to the outside of the rotary tank 22 through the slit 23. Therefore, by providing the projection 22b, the amount of the cutting oil 8 discharged from the discharge port 24b together with the cutting waste 9 can be extremely reduced, and the separation rate and the removal rate of the cutting oil 8 from the cutting waste 9 can be increased. The feature is that the recovery rate of the cutting oil 8 can be improved as well.

The cutting oil 8 is the inner wall 25a of the cutting oil recovery box 25.
It collides with the water and flows downward, is recovered and flows from the connecting pipe 7b to the separator 30. On the other hand, the cutting chips 9 collide with the inner wall of the casing 21 of the cutting oil separation device 7 and fall, and the guide plate 7c
Are collected and collected in a cutting scraps collection truck 40 that stands by below the centrifugal separator 20 and the separator 30. In the separator 30, the rotating adsorbent 34 adsorbs the fine cutting dust 9 remaining in the cutting oil 8. The scraps 9 on the surface of the adsorbent 34 scraped by the scraper 35a fall from the other end of the gutter 35, are collected by the guide plate 7c, and are collected by the scrap scrap recovery truck 40 that stands by below the centrifugal separator 20 or the separator 30. Be recovered. In this way, the cutting oil 8 from which the cutting chips 9 have been almost completely removed is
It flows through the oil feed pipe 14, the quantitative measuring device 16, and the oil feed pipe 15 and is supplied to the cutting oil recovery tank 4 or directly to the machine tool 2. It should be noted that a foreign matter may be further removed from the cutting oil by providing a filter in the middle of the oil supply pipe 14 or the oil supply pipe 15 to increase the purity and return the cutting oil storage tank 3.

[0017]

Since the present invention is configured as described above, it has the following effects. Since the cutting oil and the cutting waste can be separated almost completely, the recovery rate of the cutting oil is improved and the economical efficiency can be improved. In addition, since the cutting oil can be collected in a state where the cutting oil is almost completely removed, the work load at the time of collecting the cutting waste is reduced, and the environmental impact when processing the cutting waste is small. can do.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an overall configuration of a cutting oil separation and recovery apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic diagram illustrating an internal configuration of a cutting oil separation device.

FIG. 3 is an enlarged schematic diagram illustrating the configuration of a centrifuge.

FIG. 4 is an enlarged schematic diagram illustrating the configuration of a separator.

[Explanation of symbols]

 1 Cutting Oil Separation / Recovery Device 2 Machine Tool 3 Cutting Oil Storage Tank 4 Cutting Oil Recovery Tank 5 1st Conveyor 6 3rd Conveyor 7 Cutting Oil Separation Device 7a Input Port 7b Communication Pipe 7c Guide Plate 8 Cutting Oil 9 Cutting Debris 11 Feeding Oil pipe 13 Second conveyer 14, 15 Oil transfer pipe 16 Quantitative measuring instrument 20 Centrifuge 21 Housing 22 Rotating tank 22a Inner peripheral surface 22b Protrusion 23 Slit 24 Cover 24a Input port 24b Discharge port 25 Cutting oil recovery box 25a Inner surface 26 Motor ( Driving body) 27 Belt 30 Separator 32a First storage portion 32b Second storage portion 33 Motor (driving body) 34 Adsorbent body 35 Gutter (cutting dust discharging means) 35a scraper 40 Cutting scrap collecting truck

Claims (3)

[Claims] 1. A cutting oil storage tank (3) for storing cutting oil to be supplied to a processing area of a machine tool (2), and a cutting oil for collecting cutting oil discharged to the outside of the processing area together with cutting waste. A recovery tank (4), a carrying-out means (5, 13) for carrying out cutting wastes inside the cutting oil recovery tank to the outside of the cutting oil recovery tank, and a carrying means arranged outside the cutting oil recovery tank and carried by the carrying means. Cutting oil separation device (7) for receiving cutting scraps, separating and removing cutting oil from the cutting scraps, and collecting separately the separated and removed cutting oils and cutting scraps
And an oil feeding means (14, 15) for transporting the cutting oil separated and removed from the cutting scraps to either the cutting oil storage tank, the cutting oil recovery tank or the machine tool. Cutting oil separation and recovery device. 2. The cutting oil separation device is rotatably provided in a housing (21) having an open bottom, and has an inner peripheral surface (22a) inclined from the tank bottom toward the opening at the upper end. At the same time, a rotary tank (22) having a large number of slits (23) for discharging cutting oil in the vicinity of the opening, and rotary drive means (26, 26a, 2) for rotating the rotary tank.
7, 28a) and the opening of the rotary tank,
A cover (2) having a discharge opening (24b) for cutting chips formed at the periphery of the opening so that the cutting chips in the tank can be discharged to the outside of the tank by centrifugal force when the rotary tank rotates.
4), and a centrifugal separator (20) comprising the rotary tank and a cutting oil recovery box (25) for collecting the cutting oil discharged to the outside of the tank through the slit due to the rotation of the rotary tank. A cutting scrap collecting means (7c, 4) provided below the centrifugal separator for collecting cutting scraps discharged from the rotary tank.
0) and the cutting oil separating and collecting apparatus according to claim 1, characterized in that: 3. The cutting oil separation device has a storage part (32a, 32b) for temporarily storing the cutting oil separated and removed from the cutting chips by the centrifugal separator, and has magnetism, and has an outer peripheral surface. An adsorbent (34) which is rotatably provided in a state where a part of the oil is partially immersed in the cutting oil in the reservoir, and adsorbs cutting chips remaining in the cutting oil while rotating; And a driving source (3) for rotating the adsorbent, and a scrap ejecting means (35) for scraping and ejecting the chip adsorbed on the outer peripheral surface of the adsorbent by the rotation of the scraper (35a).
3. The cutting oil separation and recovery device according to claim 2, further comprising a separator (30) including the above.