JP2019166615A - Cut powder washing device and cut powder washing method - Google Patents

Abstract

To provide a cut powder washing device that facilitates separation of cutting oil from cut powder.SOLUTION: A cut powder washing device, which removes cutting oil with water solubility adhering to cut powder, comprises: a washing tank that can store water therein; an input port through which cut powder is put into the washing tank; a discharge port through which gas is discharged into water in the washing tank; and an accumulation part, provided at a position away from a passage through which air bubble made by gas discharged through the discharge port passes, which accumulates the cut powder in water in the washing tank. The input port is arranged just above the passage. This allows the cutting oil to be efficiently dissolved in the water in the washing tank so that the cutting oil can be easily separated from the cut powder, while suppressing flow rate of gas discharged through the discharge port.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a chip cleaning apparatus and a chip cleaning method for removing cutting oil adhering to a chip.

  When cutting the workpiece, the cutting oil is processed while supplying the cutting oil to the processed portion, so that the cutting oil is attached to the chips generated during the processing. It is known that a slope is provided at the bottom of a storage box into which chips are introduced, and the cutting oil falling from the chips is collected along the slope of the storage box to separate the chips from the cutting oil (Patent Document). 1).

Utility Model Registration No. 3196002

  However, in the above conventional technique, the separation between the cutting oil and the chips is insufficient. As a result, when the chips are re-dissolved, the amount of smoke generated by the combustion of the cutting oil is increased, the working environment is deteriorated, and the chips are easily burned, and the reuse rate of the chips is reduced.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a chip cleaning apparatus and a chip cleaning method capable of easily separating cutting oil from chips.

  In order to achieve this object, the chip cleaning device of the present invention removes water-soluble cutting oil adhering to the chip, and includes a cleaning tank in which water is stored, and the chip in the cleaning tank. And a discharge port for discharging gas into the water of the cleaning tank, and a position outside the path through which bubbles generated by the gas discharged from the discharge port pass, and the water of the cleaning tank And a depositing portion for depositing the chips, and the inlet is disposed immediately above the path.

  The chip cleaning method of the present invention removes water-soluble cutting oil adhering to a chip by a chip cleaning apparatus, the chip cleaning apparatus includes a cleaning tank in which water is stored, and the cleaning A discharge port that discharges gas into the water of the tank, and a deposition unit that is provided at a position outside a path through which bubbles generated by the gas discharged from the discharge port pass and in which the chips accumulate in the water of the cleaning tank And the chips to which the cutting oil is attached are put directly on the path in the cleaning tank.

  According to the chip cleaning apparatus of claim 1, the gas is discharged from the discharge port into the water of the cleaning tank, and the chips are placed in the cleaning tank from the input port disposed immediately above the path through which bubbles generated by the gas pass. It is thrown. Thereby, bubbling washing can be performed on the chips put in the washing tank. Therefore, the cutting oil adhering to the chips can be efficiently dissolved in the water in the cleaning tank.

  Furthermore, since the accumulation part in which the chips accumulate in the water of the cleaning tank is provided at a position outside the path through which the bubbles generated by the gas discharged from the discharge port pass, the bubbles from the discharge port are generated by the accumulated chips. Can be hard to block. Thereby, even if it does not increase the flow volume of the gas discharged from a discharge outlet, a chip can be sufficiently bubble-cleaned. Therefore, it is possible to easily separate the cutting oil from the chips by efficiently dissolving the cutting oil in the water in the cleaning tank while suppressing the flow rate of the gas discharged from the discharge port.

  According to the chip cleaning apparatus of the second aspect, the bottom surface and the side surface of the container are provided with a plurality of through holes smaller than the chip. Inside the container immersed in water in the washing tank, the path through which bubbles pass is directed to the water surface. And since the insertion port is arrange | positioned just above the path | route of the bubble in a container, a chip can be bubble-washed in a container. Then, the chips can be deposited on the deposition portion that is at least a part of the bottom surface of the container. As a result, if the container is taken out of the water in the cleaning tank, the chips that are bubble-cleaned in the container and the water in which the cutting oil is dissolved can be easily separated. Therefore, in addition to the effect of the first aspect, the cutting oil can be further easily separated from the chips.

  According to the chip cleaning apparatus of the third aspect, the container is held by the first holding portion with a gap provided between the bottom surface and the wall surface of the cleaning tank and the deposition portion. Thereby, the water flow which generate | occur | produces when a gas is discharged from the discharge outlet in the water of a washing tank can be mainly passed between the bottom face and wall surface of a washing tank, and the deposition part of a container. Thereby, it can suppress that the chip | tip which accumulated on the deposition part due to the water flow is stirred again. As a result, air bubbles from the discharge port can be prevented from being blocked by the already cleaned bubbling chips, so that the flow rate of the gas discharged from the discharge port can be further suppressed.

  According to the chip cleaning apparatus of the fourth aspect, the container is held by the second holding portion so that the bottom surface of the container is positioned above the water surface. Thereby, the water containing the bubbling-cleaned chips is held in the second holding portion, so that the water can be returned to the cleaning tank while draining the chips. As a result, in addition to the effect of the second or third aspect, the cutting oil can be further easily separated from the chips.

  In the chip cleaning method according to the fifth aspect, water is stored inside the cleaning tank of the chip cleaning apparatus, and gas is discharged from the discharge port into the water of the cleaning tank. By introducing the chips to which the cutting oil is attached immediately above the path through which bubbles generated by the gas pass, the chips introduced into the cleaning tank can be bubble-cleaned. Therefore, the cutting oil adhering to the chips can be efficiently dissolved in the water in the cleaning tank.

  Furthermore, since the accumulation part in which the chips accumulate in the water of the cleaning tank is provided at a position outside the path through which the bubbles generated by the gas discharged from the discharge port pass, the bubbles from the discharge port are generated by the accumulated chips. Can be hard to block. Thereby, even if it does not increase the flow volume of the gas discharged from a discharge outlet, a chip can be sufficiently bubble-cleaned. Therefore, it is possible to easily separate the cutting oil from the chips by efficiently dissolving the cutting oil in the water in the cleaning tank while suppressing the flow rate of the gas discharged from the discharge port.

It is sectional drawing of the chip cleaning apparatus in 1st Embodiment. It is sectional drawing of the chip washing apparatus in the II-II line of FIG. It is sectional drawing of the chip cleaning apparatus in 2nd Embodiment. (A) is sectional drawing of the chip cleaning apparatus in 3rd Embodiment, (b) is sectional drawing of the chip cleaning apparatus in the IVb-IVb line | wire of Fig.4 (a).

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. First, with reference to FIG.1 and FIG.2, the chip washing apparatus 1 in 1st Embodiment is demonstrated. FIG. 1 is a cross-sectional view of the chip cleaning device 1. 2 is a cross-sectional view of the chip cleaning device 1 taken along the line II-II in FIG. In addition, in FIG.1 and FIG.2 etc., in order to simplify drawing and to make it easy to understand, each part of the chip cleaning apparatus 1 is typically shown. Moreover, in each drawing, the main path | route (movement) of the chip 2 which has not accumulated is shown with the white arrow.

  As shown in FIGS. 1 and 2, the chip cleaning apparatus 1 is an apparatus for cleaning the chip 2 by dissolving and removing water-soluble cutting oil adhering to the chip 2 discharged by cutting in water 3. is there. In addition, the chip 2 is an aluminum alloy or aluminum. The chips 2 may be any metal that sinks in the water 3 such as magnesium alloy or steel, synthetic resin, ceramics, wood, or the like. However, the raw material of the chip 2 is preferably one that can be reused by remelting or the like.

  The chip cleaning apparatus 1 mainly includes a cleaning tank 10 in which water 3 is stored, containers 20 and 20 in which the chip 2 is stored, and a discharge port 30 that discharges gas into the water of the cleaning tank 10. . The chips 2 are charged into the container 20 in the cleaning tank 10 from the charging port 4. The chips 2 are conveyed to the input port 4 by a belt conveyor (not shown) from a cutting device or the like.

  The washing tank 10 is composed of a rectangular parallelepiped box whose upper part is opened so that the chips 2 can be put inside. In the cleaning tank 10, flat rectangular wall surfaces 12 are erected vertically on four sides of a flat rectangular bottom surface 11. Water 3 is stored in a space surrounded by the bottom surface 11 and the wall surface 12. The cleaning tank 10 is installed such that the bottom surface 11 is substantially horizontal. In addition, the washing tank 10 can be moved with respect to the inlet 4 by lifting the washing tank 10 or providing a caster in the washing tank 10. Further, the charging port 4 may be moved with respect to the cleaning tank 10.

  A concentration meter 14 for measuring the concentration of cutting oil dissolved in water 3 is attached to the wall surface 12 of the cleaning tank 10. When the concentration of the cutting oil measured by the densitometer 14 becomes equal to or higher than the threshold value, a notification device 15 that notifies by voice or light based on a signal from the densitometer 14 is attached to the cleaning tank 10. The cleaning tank 10 is provided with a discharge path 16 for discharging the internal water 3. By opening the discharge valve 17 provided in the discharge path 16, the water 3 in the cleaning tank 10 is discharged.

  The containers 20 and 20 are constituted by a rectangular parallelepiped box whose upper part is opened so that the chips 2 can be put inside. The containers 20 and 20 include a flat rectangular plate-shaped bottom surface 22, flat rectangular plate-shaped wall surfaces 23 erected on each of the four sides of the bottom surface 22, and a flange portion 24 that projects outward from the upper end of the wall surface 23. Is provided. The bottom surface 22 and the wall surface 23 are formed in a mesh shape formed by braiding a metal wire. The size of the plurality of through holes due to the mesh is smaller than the size of the chips 2.

  The collar part 24 is placed on the first holding part 13 projecting inward from the wall surface 12 of the cleaning tank 10. The position of the first holding unit 13 is set so that the container 20 is held by the first holding unit 13 in the cleaning tank 10 with the bottom surface 22 side of the container 20 immersed in the water 3 in the cleaning tank 10. . Further, the first holding unit 13 holds the container 20 so that the wall surface 23 of the container 20 and the wall surface 12 of the cleaning tank 10 are sufficiently separated while the bottom surface 22 of the container 20 and the bottom surface 11 of the cleaning tank 10 are sufficiently separated. Hold. Furthermore, the 1st holding | maintenance part 13 hold | maintains the container 20 so that the bottom face 22 of the container 20 may become substantially horizontal.

  The cleaning tank 10 is provided with a second holding unit 18 that holds the container 20 so that the bottom surface 22 of the container 20 is positioned above the water surface in the cleaning tank 10. The second holding unit 18 is a member that projects inward from the wall surface 12 of the cleaning tank 10. The bottom surface 22 of the container 20 is placed on the second holding unit 18.

  The shape and dimensions of the cleaning tank 10 are set so that the second holding unit 18 can hold another container 20 different from the container 20 held by the first holding unit 13 while holding the container 20 in the first holding unit 13. Has been. In the present embodiment, the shape and dimensions of the cleaning tank 10 are set so that the two containers 20 and 20 can be arranged inside the cleaning tank 10 even when they are arranged in the horizontal direction.

  The discharge port 30 is a member for discharging air supplied from the air pump 31 into water. The discharge port 30 is fixed to the bottom surface 11 of the cleaning tank 10 via a fixing member (not shown). In addition, not only when supplying air to the discharge port 30 from the air pump 31, you may supply air to the discharge port 30 from the line air in a factory.

  In the present embodiment, the discharge port 30 is composed of an air diffuser that discharges air from the outer peripheral surface. Air supplied to the tubular discharge port 30 is discharged from the outer peripheral surface of the discharge port 30 into the water, and bubbles generated by the air rise from the discharge port 30 toward the water surface. In FIG. 1 and FIG. 2, the path 6 through which bubbles pass is indicated by black line arrows.

  Note that the bubbles in the “path 6 through which bubbles pass” indicate bubbles of a size that allows the chips 2 to move relatively vigorously in water (to the extent that bubbling cleaning is possible). It does not include air bubbles of a small size (such as microbubbles) or air bubbles of a size that causes the chips 2 to float by buoyancy due to the bubbles attached to the chips 2. The flow rate of air discharged from the discharge port 30, the bubble diameter, the injection force, and the like are set according to the size of the chips 2 so that such bubbles are generated.

  The discharge port 30 is disposed between the bottom surface 11 of the cleaning tank 10 and the bottom surface 22 of the container 20 held by the first holding unit 13. Furthermore, the discharge port 30 is disposed so that the axial direction of the air diffusing tube is substantially parallel to and close to one side of the bottom surface 22 of the container 20. The inlet 4 is disposed immediately above the outlet 30 (immediately above the path 6 through which bubbles generated by the air discharged from the outlet 30 pass). The axial length of the air diffuser (discharge port 30) is set to be approximately the same as the length of one side of the bottom surface 22 parallel to the axis of the air diffuser.

  Next, the usage method of the chip washing apparatus 1 is demonstrated. First, the container 20 that does not contain the chips 2 is held by the first holding unit 13, and the water 3 is stored in the cleaning tank 10 so that the entire container 20 does not sink into water. Next, the washing tank 10 is set below the charging port 4 so that the chips 2 from the charging port 4 are charged into the container 20 and the charging port 4 is disposed immediately above the discharge port 30. .

  Next, the air pump 31 is operated to discharge air from the discharge port 30 into the water. In this state, the chips 2 are charged into the container 20 from the charging port 4. And since the path | route 6 goes to the water surface inside the container 20 immersed in the water 3 in the washing tank 10 and the bubble which the air discharged from the discharge outlet 30 produces rises, the chip 2 thrown into the container 20 is carried out. Bubbling cleaning is performed by the water 3 in the cleaning tank 10 and the bubbles from the discharge port 30. As a result, the cutting oil adhering to the chip 2 can be efficiently dissolved in the water in the cleaning tank 10, so that the cutting oil can be easily separated from the chip 2.

  Since the inlet 4 is disposed immediately above the bubble path 6 in the container 20, the chips 2 immediately after being introduced into the container 20 can be bubble-washed. In particular, since air flows upward from the discharge port 30 and the input port 4 is located immediately above the discharge port 30, the chips 2 are input to the water surface where bubbles appear through the path 6 appear. Thereby, washing | cleaning of the chip 2 can be started before the chip 2 thrown into the water 3 spread | diffuses in water. As a result, the chip 2 can be reliably washed, so that the cutting oil can be efficiently dissolved in the water in the washing tank 10 and the cutting oil can be more easily separated from the chip 2.

  Here, since the discharge port 30 is arranged so that the axial direction of the air diffuser is substantially parallel to and close to one side of the bottom surface 22 of the container 20, the discharge port 30 is biased toward a part below the container 20. The discharge port 30 is located. Therefore, the chip 2 is washed by the bubble path 6 toward the water surface inside the container 20, and the chip 2 moving toward the water surface is located at a position away from the bubble path 6 and one of the bottom surfaces 22 of the container 20. It deposits on the deposit part 25 which is a part.

  The depositing portion 25 is a part of the bottom surface 22 that is separated from one side of the bottom surface 22 where the discharge port 30 is disposed nearby. As the distance from the discharge port 30 increases, the chip 2 accumulates higher in the accumulation unit 25. This is because the bubble path 6 also spreads in the horizontal direction as the distance from the discharge port 30 increases, and the chips 2 are deposited so as to deviate from the path 6.

  Since the chips 2 are deposited on one side in the container 20, the container 20 can be made smaller than in the case where the chips 2 are deposited on both sides in the container 20. As a result, the chip cleaning apparatus 1 can be made small. In particular, since the discharge port 30 is arranged in parallel with and directly below one side of the bottom surface 22 of the container 20, the accumulation portion 25 is not provided on the one side. it can. Even if the deposition part 25 is provided on one side of the bottom surface 22 close to the discharge port 30 (path 6), the chip 2 can hardly be deposited on the deposition part 25. By not providing, the space in the container 20 can be used effectively.

  In addition, since the chips 2 can be deposited on the accumulation portion 25 at a position off the bubble path 6, the bubbles from the discharge port 30 can be hardly blocked by the accumulated chips 2. Thereby, even if it does not increase the flow volume of the air discharged from the discharge outlet 30, the chip 2 can be sufficiently washed. Therefore, the cutting oil can be efficiently dissolved in the water in the cleaning tank 10 while suppressing the flow rate of the air discharged from the discharge port 30. Since the flow rate of air can be suppressed, for example, an air pump 31 for ornamental fish with low power consumption can be used.

  After the washed chips 2 are sufficiently accumulated, the charging of the chips 2 from the inlet 4 is stopped, and the operator lifts the container 20 from the first holding part 13 and takes out the container 20 from the water 3. Thus, if the container 20 is removed from the first holding part 13 and taken out from the water 3, the chips 2 washed in the container 20 and the water 3 in which the cutting oil is dissolved can be easily separated.

  And the container 20 taken out from the water 3 is hold | maintained at the 2nd holding | maintenance part 18, and the bottom face 22 of the container 20 is maintained in the state which floated from the water 3. FIG. Thereby, the water can be returned to the cleaning tank 10 while draining the chips 2 in the container 20 held by the second holding unit 18. As a result, the cutting oil can be further easily separated from the chips 2.

  In addition, the chips 2 that have been sufficiently drained are taken out from the container 20 and collected in another container for re-dissolution. The less cutting oil adhering to the chip 2, the smaller the amount of cutting oil that burns when the chip 2 is re-dissolved. As described above, since the cutting oil can be easily separated from the chip 2 by the chip cleaning device 1, when the chip 2 is re-dissolved, it is possible to suppress smoke generation and combustion of the chip 2 due to burning of the cutting oil. As a result, the work environment can be improved and the reuse rate of the chips 2 can be improved.

  After the container 20 is held by the second holding unit 18, a container 20 different from the container 20 held by the second holding unit 18 is held by the first holding unit 13. Next, the chip 2 is again charged into the container 20 held by the first holding unit 13 from the charging port 4 and the cleaning of the chip 2 is resumed.

  When the concentration of the cutting oil in water measured by the densitometer 14 is equal to or higher than the threshold value, the notification device 15 notifies the user. This threshold value is set slightly smaller than the saturation amount of the cutting oil that dissolves in the water 3. That is, the notification by the notification device 15 indicates that the timing at which the cutting oil adhering to the chip 2 becomes difficult to dissolve in the water 3 is approaching. Instead of using the notification device 15, the operator may check with the densitometer 14 whether the concentration of the cutting oil dissolved in the water 3 is equal to or higher than a threshold value. Further, it may be determined whether the concentration of the cutting oil is equal to or higher than the threshold by looking at the color of the water 3 colored with the cutting oil without using the densitometer 14.

  When it turns out that the density | concentration of a cutting oil is more than a threshold value, after stopping the injection of the chip 2 from the insertion port 4, the air pump 31 is stopped and the discharge of the air from the discharge port 30 is stopped. Next, the discharge valve 17 is opened to discharge the water 3 from the discharge path 16. Thereafter, water 3 is newly stored in the cleaning tank 10, the charging of the chips 2 from the inlet 4 and the discharge of air from the outlet 30 are restarted, and the cleaning of the chips 2 is restarted.

  According to the chip cleaning apparatus 1 as described above, since the container 20 is held by the first holding unit 13 so that the bottom surface 22 of the container 20 is substantially horizontal, the chip 2 deposited on the accumulation unit 25 is removed from the bottom surface. It is possible to suppress movement along the path 22 to the bubble path 6. Thereby, since the bubble from the discharge port 30 can be made more difficult to be blocked by the accumulated chips 2, the flow rate of air discharged from the discharge port 30 can be further suppressed.

  The axial length of the air diffuser (discharge port 30) is set to be approximately the same as the length of one side of the bottom surface 22 parallel to the axis of the air diffuser. Therefore, the chips 2 can be washed in a wide range of the container 20. As a result, the cutting oil can be further easily separated from the chips 2 by more efficient cleaning.

  Since the discharge port 30 is disposed below the bottom surface 22 of the container 20 and the bubble path 6 created by the air discharged from the discharge port 30 passes through the mesh of the bottom surface 22, the air passing through the bottom surface 22 spreads over a wide range. Thereby, the chip 2 thrown into the container 20 can be more efficiently cleaned. As a result, the cutting oil can be efficiently dissolved in the water in the cleaning tank 10 and the cutting oil can be easily separated from the chips 2.

  The container 20 is held by the first holding unit 13 with a gap provided between the deposition unit 25 of the container 20 and the bottom surface 11 and the wall surface 12 of the cleaning tank 10. Thereby, the water flow generated when air is discharged from the discharge port 30 into the water of the cleaning tank 10 can be mainly passed between the bottom surface 11 and the wall surface 12 and the container 20. Therefore, it is possible to prevent the chips 2 from becoming difficult to be deposited on the accumulation portion 25 of the container 20 or the stirring of the chips 2 accumulated on the accumulation portion 25 due to the water flow caused by the discharge of air. As a result, since the bubbles from the discharge port 30 can be hardly blocked by the already-cleaned chip 2, the flow rate of air discharged from the discharge port 30 can be further suppressed.

  The shape and dimensions of the cleaning tank 10 are set so that the second holding unit 18 can hold another container 20 different from the container 20 held by the first holding unit 13 while holding the container 20 in the first holding unit 13. Has been. Thereby, draining of the chip 2 in the container 20 held by the second holding unit 18 and washing of the chip 2 in the container 20 held by the first holding unit 13 can be performed simultaneously.

  Here, when washing of the chips 2 in the container 20 is performed in the washing tank and draining of the chips 2 is performed in another place other than the washing tank, the shape and dimensions of the washing tank are determined by the single container 20. What is necessary is just to set so that it may fit inside. In order to allow the first holding part 13 and the second holding part 18 provided in the cleaning tank 10 to hold the containers 20 respectively, and for the drained water to fall into the cleaning tank 10, one container 20 fits inside. The shape and dimensions of the cleaning tank 10 are set to be larger than those of the cleaning tank having the shape and dimensions set in (1). Thereby, since the amount of water stored in the cleaning tank 10 can be increased, the amount of cutting oil that can be dissolved in the water 3 in the cleaning tank 10 can be increased. As a result, the replacement frequency of the water 3 in the cleaning tank 10 can be reduced.

  Only air is discharged from the discharge port 30 during cleaning. When the water 3 in the cleaning tank 10 is sucked, and the water 3 and air are mixed and discharged from the discharge port 30, impurities or the like are clogged in the path for sucking the water 3, and the discharge port 30 is likely to break down. There is a possibility. When new water is mixed with air and discharged, it is necessary to continuously discharge the same amount of water 3 as the water discharged from the discharge port 30 so that the water 3 in the cleaning tank 10 does not overflow. And the concentration of the cutting oil dissolved in the water 3 decreases.

  In contrast, in the present embodiment, only air is discharged from the discharge port 30. Therefore, it is possible to prevent clogging of the path for sucking the water 3, and it is possible to simplify the chip cleaning device 1 by not discharging the water 3 continuously. Furthermore, since only air is discharged from the discharge port 30, it is possible to prevent the concentration of the cutting oil dissolved in the water 3 from being reduced, and to obtain the water 3 in which the cutting oil having a sufficient concentration is dissolved. Therefore, for example, the amount of cutting fluid stock solution used can be reduced by diluting the cutting fluid stock solution with water 3 in which a sufficient concentration of cutting oil is dissolved.

  The cleaning tank 10 has a wall surface 12 standing substantially vertically on a bottom surface 11. Thereby, compared with the case where the angle of the bottom face 11 and the wall surface 12 is comparatively large, the smoothness of the water flow along the bottom face 11 and the wall surface 12 which arises by the discharge of the air from the discharge outlet 30 can be reduced. In addition, since the wall surfaces 12 standing on the four sides of the bottom surface 11 are also arranged perpendicular to each other, the wall surface 12 generated by the discharge of air from the discharge port 30 compared to the case where the angle between the wall surfaces 12 is relatively large. The smoothness of the water flow along can be reduced.

  Furthermore, since the bottom surface 11 and the wall surface 12 are connected at the corners, the water flow along the bottom surface 11 and the wall surface 12 generated by the discharge of air from the discharge port 30 as compared with the case where the bottom surface 11 and the wall surface 12 are connected by a curved surface. Smoothness can be reduced. Since the wall surfaces 12 are also connected at the corners, the smoothness of the water flow along the wall surface 12 caused by the discharge of air from the discharge port 30 can be reduced as compared with the case where the wall surfaces 12 are connected by curved surfaces.

  As a result, it is possible to prevent the chips 2 from becoming difficult to be deposited on the accumulation portion 25 due to the water flow caused by the air from the discharge port 30 or the stirring of the chips 2 accumulated on the accumulation portion 25 again. As a result, since the bubbles from the discharge port 30 can be hardly blocked by the already-cleaned chip 2, the flow rate of air discharged from the discharge port 30 can be further suppressed.

  Next, a second embodiment will be described with reference to FIG. In the first embodiment, the case where the chips 2 are deposited on one side of the container 20 has been described. On the other hand, 2nd Embodiment demonstrates the case where the chip 2 accumulates on both sides of the container 20, respectively. In addition, about the part same as 1st Embodiment, the same code | symbol is attached | subjected and the following description is abbreviate | omitted. In addition, the same reference numerals are given to portions where only the dimensions are changed with respect to the first embodiment, and the following description is omitted. FIG. 3 is a cross-sectional view of the chip cleaning device 40 according to the second embodiment.

  As shown in FIG. 3, the chip cleaning device 40 is a device that cleans the chip 2 by dissolving and removing water-soluble cutting oil adhering to the chip 2 discharged by cutting in water 3. The chip cleaning device 40 mainly includes a cleaning tank 10 in which water 3 is stored, a container 20 that stores the chip 2, and a discharge port 41 that discharges gas into the water of the cleaning tank 10. The chips 2 are charged into the container 20 in the cleaning tank 10 from the charging port 4.

  The discharge port 41 is a member for discharging the air supplied from the air pump 31 into the water. In the present embodiment, the discharge port 41 is composed of an air diffuser that discharges air from the outer peripheral surface. Air supplied to the tubular discharge port 41 is discharged into the water from the outer peripheral surface of the discharge port 41, and bubbles generated by the air rise from the discharge port 41 toward the water surface. In FIG. 3, the path 6 through which the bubble passes is indicated by a black arrow.

  The discharge port 41 is disposed between the bottom surface 11 of the cleaning tank 10 and the bottom surface 22 of the container 20 held by the first holding unit 13. The charging port 4 is disposed immediately above the discharge port 41 (directly above the path 6 through which bubbles generated by the air discharged from the discharge port 41 pass). Thereby, bubbling washing can be performed on the chips 2 immediately after being introduced into the container 20 from the inlet 4. As a result, the cutting oil adhering to the chip 2 can be efficiently dissolved in the water in the cleaning tank 10, and the cutting oil can be easily separated from the chip 2.

  The discharge port 41 is disposed at an intermediate point between the two sides of the bottom surface 22 of the container 20 with the axial direction of the air diffusing tube being substantially parallel to the two sides facing each other. As a result, the chips 2 are deposited on the depositing portions 42 and 43 that are part of the bottom surface 22 including the two sides. As the distance from the discharge port 41 increases, the chips 2 are piled up higher in the accumulation portions 42 and 43. This is because the bubble path 6 also spreads in the horizontal direction as the distance from the discharge port 41 increases, and the chips 2 are deposited so as to deviate from the path 6.

  Since the chips 2 can be deposited on the depositing portions 42 and 43 at positions away from the bubble path 6, the bubbles from the discharge port 41 can be hardly blocked by the accumulated chips 2. Thereby, even if it does not enlarge the flow volume of the air discharged from the discharge port 41, the chip 2 can be sufficiently washed. Therefore, the cutting oil can be efficiently dissolved in the water in the cleaning tank 10 while the flow rate of the air discharged from the discharge port 41 is suppressed, so that the cutting oil can be more easily separated from the chips 2.

  Compared to the first embodiment in which the depositing portion 25 is located only on one side of the container 20 with respect to the discharge port 30, in the second embodiment, the depositing portions 42 and 43 on both sides of the container 20 with respect to the discharge port 41, respectively. Therefore, the container 20 and the cleaning tank 10 are set large. As a result, the amount of the chips 2 entering the container 20 and the capacity of the water 3 in the cleaning tank 10 increase, so the frequency of taking out the container 20 from the water 3 and the frequency of replacing the water 3 in the cleaning tank 10 are reduced. it can.

  Next, a third embodiment will be described with reference to FIGS. 4 (a) and 4 (b). In the first and second embodiments, the case where the container 20 is set in the cleaning tank 10 and the bubbling cleaning is performed has been described. In contrast, in the third embodiment, a case where bubbling cleaning is performed without setting the container 20 in the cleaning tank 10 will be described. In addition, about the part same as 1st Embodiment, the same code | symbol is attached | subjected and the following description is abbreviate | omitted. In addition, the same reference numerals are given to portions where only the dimensions are changed with respect to the first embodiment, and the following description is omitted. Fig.4 (a) is sectional drawing of the chip cleaning apparatus 50 in 3rd Embodiment. FIG.4 (b) is sectional drawing of the chip washing apparatus 50 in the IVb-IVb line | wire of Fig.4 (a).

  As shown in FIGS. 4 (a) and 4 (b), the chip cleaning device 50 dissolves and removes the water-soluble cutting oil adhering to the chip 2 discharged by the cutting process in the water 3, and removes the chip. 2 is an apparatus for cleaning. The chip cleaning device 50 mainly includes a cleaning tank 10 in which water 3 is stored, and a discharge port 51 that discharges gas into the water of the cleaning tank 10. The chips 2 are fed into the cleaning tank 10 from the inlet 4.

  The discharge port 51 is a member for discharging air supplied from the air pump 31 into water. In the present embodiment, the discharge port 51 is composed of an air nozzle that discharges air from the tip of the shaft-shaped member. The discharge port 51 is fixed to the center of one of the four wall surfaces 12 of the cleaning tank 10 in the horizontal direction, and is arranged with its tip directed so that air is emitted vertically from the wall surface 12.

  The ejection force of the air discharged from the discharge port 51 is set to be relatively strong. Specifically, air injection is performed depending on the output of the air pump 31, the shape of the discharge port 51, and the like so that the bubbles generated by the air discharged from the discharge port 51 reach the wall surface 12 facing the wall surface 12 to which the discharge port 51 is fixed. Force is set. In order to increase the air injection force, air and water may be mixed and discharged from the discharge port 51, and bubbles generated by the air may be guided to the wall surface 12 side by the force of the water flow discharged from the discharge port 51. .

Then, bubbles generated by the air discharged from the discharge port 51 rise toward the water surface in the vicinity of the wall surface 12 at a position facing the discharge port 51. In FIGS. 4A and 4B, the path 54 through which bubbles pass is indicated by black arrows. As in the first embodiment, the bubbles in the “passage 54 through which bubbles pass” indicate bubbles that are large enough to move the chips 2 in water relatively vigorously (so that bubbling can be performed). It does not include bubbles of a size that cannot move the chip 2 (such as microbubbles) or bubbles of a size that can float the chip 2 by buoyancy caused by bubbles adhering to the chip 2.

The bubbles in the “path 54 through which bubbles pass” indicate bubbles that are large enough to move (stir) the chips 2 in water, and bubbles that cannot move the chips 2 (such as microbubbles). Not included.

  According to such a chip cleaning device 50, the chip 2 is introduced into the water 3 in the cleaning tank 10 from the inlet 4 located immediately above the path 54 through which bubbles pass, and air is discharged from the outlet 51. By doing so, the chip 2 is bubble-cleaned in the cleaning tank 10. Thereby, the cutting oil adhering to the chip 2 can be efficiently dissolved in the water in the cleaning tank 10, and the cutting oil can be easily separated from the chip 2.

  Since air is discharged in the vertical direction of the wall surface 12 from the discharge port 51 fixed to the horizontal center of one of the four wall surfaces 12, a bubble path 54 is formed. The chips 2 are deposited on the deposition parts 52 and 53 that are part of the bottom surface 11 of the cleaning tank 10. Since the chips 2 can be deposited on the depositing portions 52 and 53 at positions away from the bubble path 54, the bubbles from the discharge port 51 can be hardly blocked by the accumulated chips 2. Thereby, even if it does not enlarge the flow volume of the air discharged from the discharge outlet 51, the chip 2 can be sufficiently washed. Accordingly, the cutting oil can be efficiently dissolved in the water in the cleaning tank 10 while the flow rate of the air discharged from the discharge port 51 is suppressed, and the cutting oil can be more easily separated from the chips 2.

  Furthermore, since the cleaning tank 10 is installed so that the bottom surface 11 is substantially horizontal, the chips 2 deposited on the depositing parts 52 and 53 that are part of the bottom surface 11 pass along the bottom surface 11 to the bubble path 54. It can suppress moving. Thereby, since the bubbles from the discharge port 51 can be more easily blocked by the accumulated chips 2, the flow rate of air discharged from the discharge port 51 can be further suppressed.

  Since the discharge port 51 discharges air having a strong injection force from the tip, the chips 2 can be sufficiently cleaned while the range of the bubble path 54 formed by the air is relatively narrow. As a result, it is possible to easily deposit a large amount of the chips 2 on the accumulation portions 52 and 53 and to easily separate the cutting oil from the chips 2 by bubbling cleaning.

  After the cleaning, the operator scoops and collects the chips 2 accumulated in the accumulation parts 52 and 53. Since the chips 2 are accumulated on the accumulation parts 52 and 53 that are part of the bottom surface 11, the chips 2 can be easily collected. Moreover, although the through-hole is formed in the deposition part 25 (part of the bottom face 22) in 1st Embodiment, the deposition parts 52 and 53 in 2nd Embodiment do not have a through-hole. In 2nd Embodiment, since the chip 2 does not fit into a through-hole, the chip 2 can be collect | recovered more easily from the deposition parts 52 and 53. FIG.

  Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment, and various modifications can be easily made without departing from the spirit of the present invention. Can be inferred. For example, the shape and size of each part of the cleaning tank 10, the container 20, the discharge ports 30, 41, 51, etc. may be changed as appropriate. For example, the cleaning tank 10 and the container 20 may be formed in a cylindrical shape, the bottom surface 11 and the wall surface 12 may be connected with a curved surface, or the bottom surface 22 and the wall surface 23 may be connected with a curved surface.

  In the first embodiment, the case where the bottom surface 22 and the wall surface 23 of the container 20 are formed in a mesh shape formed by braiding a metal wire is described, but the present invention is not necessarily limited thereto. Wires may be joined together by welding or the like to form a mesh-like bottom surface 22 and wall surface 23. Moreover, you may provide the several through-hole smaller than the chip 2 in the bottom face 22 and the wall surface 23 which are comprised from a board | plate material. The material of the container 20 is not limited to metal, and the container 20 may be made of synthetic resin or the like.

  In each of the above-described embodiments, the case has been described in which the chips 2 are charged into the cleaning tank 10 and the container 20 from the charging port 4. However, the present invention is not necessarily limited thereto. For example, the chips 2 discharged from the cutting device or the like may be collected, and an operator may put the collected chips 2 directly above the bubble paths 6 and 54 in the cleaning tank 10 or the container 20.

  In each of the above-described embodiments, the case where air is discharged from the discharge ports 30, 41, 51 has been described. However, the present invention is not necessarily limited thereto. For example, a gas (such as nitrogen gas) that is difficult to dissolve in water other than air may be discharged from the discharge ports 30, 41, 51. Further, gas and water may be mixed and discharged from the discharge ports 30, 41, 51.

  In the first and second embodiments, the case where the discharge ports 30 and 41 are arranged below the container 20 has been described. However, the present invention is not necessarily limited thereto. If the bubble path 6 from the discharge ports 30 and 41 faces the water surface inside the container 20, the discharge ports 30 and 41 may be arranged on the side of the container 20. Further, the discharge ports 30 and 41 may be arranged inside the container 20. However, in this case, it is necessary to move the discharge ports 30 and 41 each time the container 20 is replaced. Therefore, it is preferable to dispose the discharge ports 30 and 41 outside the container 20.

  In the first embodiment, when the chips 2 are sufficiently accumulated in the accumulation part 25 of the container 20, the container 20 held in the first holding part 13 is taken out from the water 3 and held in the second holding part 18. However, the present invention is not necessarily limited to this. A mechanism for moving the first holding unit 13 that holds the container 20 may be provided, and the container 20 moved by the mechanism may be held above the water 3. At this time, the first holding unit 13 holding the container 20 above the water 3 becomes the second holding unit. In addition, you may perform this movement of the 1st holding | maintenance part 13 automatically based on the signal from the sensor etc. which detect that the chip 2 fully accumulated.

  In each of the above-described embodiments, the case where the bottom surface 22 of the container 20 provided with the depositing portions 25, 42, 43, 52, and 53 or the bottom surface 11 of the cleaning tank 10 is flat has been described. Absent. A step or an inclination may be provided on the bottom surface 22 of the container 20 or the bottom surface 11 of the cleaning tank 10. The portion that becomes lower due to the step or inclination is separated from the bubble path 6, 54 to form the deposition portions 25, 42, 43, 52, 53, so that the chips 2 are deposited in the deposition portions 25, 42, 43, 52, 53. Can be easily deposited.

DESCRIPTION OF SYMBOLS 1,40,50 Chip washing apparatus 2 Chip 3 Water 4 Input port 6,54 Path | route 10 Cleaning tank 11 Bottom surface 12 Wall surface 13 1st holding | maintenance part 18 2nd holding | maintenance part 20 Container 22 Bottom face 23 Wall surface 25, 42, 43, 52,53 Deposition part 30,41,51 Discharge port

Claims (5)

A chip cleaning device for removing water-soluble cutting oil adhering to chips,
A washing tank in which water is stored,
An inlet for introducing the chips into the washing tank;
A discharge port for discharging gas into the water of the cleaning tank;
Provided at a position deviated from the path through which bubbles produced by the gas discharged from the discharge port pass, and comprising a depositing part for depositing the chips in the water of the cleaning tank,
The chip cleaning apparatus, wherein the charging port is disposed immediately above the path. A container having a bottom surface and a side surface provided with a plurality of through holes smaller than the chips,
The path is directed to the water surface inside the container soaked in water in the washing tank,
The inlet is disposed directly above the path in the container;
The chip cleaning apparatus according to claim 1, wherein the accumulation unit is at least a part of the bottom surface of the container.   The chip cleaning apparatus according to claim 2, further comprising a first holding unit that holds the container with a gap between a bottom surface and a wall surface of the cleaning tank and the deposition unit.   The chip washing apparatus according to claim 2 or 3, further comprising a second holding unit that holds the container so that the bottom surface of the container is positioned above the water surface. A chip cleaning method for removing water-soluble cutting oil adhering to a chip with a chip cleaning device,
The chip cleaning device includes a cleaning tank in which water is stored,
A discharge port for discharging gas into the water of the cleaning tank;
Provided at a position deviated from the path through which bubbles produced by the gas discharged from the discharge port pass, and comprising a depositing part for depositing the chips in the water of the cleaning tank,
A method for cleaning chips, wherein the chips to which the cutting oil is attached are put directly on the path in the cleaning tank.

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