JP4492813B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning device for cleaning parts and the like after being machined.

  When machining a workpiece made of a metal material, machining is performed while a cutting agent called cutting is applied to the workpiece. Therefore, the cutting agent adheres to the surface of the workpiece after completion of processing. Water-based cutting agents are often used due to the demands of the working environment in the factory, but water-based cutting agents harden when dried, and if cutting chips adhere to the workpiece surface, Chips and the like are firmly fixed on the surface of the workpiece and are difficult to remove.

  Accordingly, various types of cleaning apparatuses are known that use a cleaning apparatus having a cleaning tank filled with a cleaning liquid to clean and remove cutting agents and chips adhering to the surface of the workpiece.

  As such a cleaning device, a cleaning tank for cleaning the workpiece and a storage tank for storing the cleaning liquid are provided. The cleaning liquid in the storage tank is always sent to the cleaning tank by a pump, and the cleaning liquid overflowed from the cleaning tank is filtered through the filter. There is known a cleaning device that returns the storage tank to the storage tank (see, for example, Patent Document 1).

In this case, oil or dirt adheres to the foam generated on the water surface of the washing tank and overflows, so that the cleaning liquid is returned to the storage tank particularly with the dirt removed by the filter.
Japanese Patent Laid-Open No. 9-263379 (FIG. 1)

  In the above conventional cleaning device, the dirt adhering to the foam overflows, is removed by the filter, is returned to the storage tank, and is supplied to the cleaning tank by the pump, so that a clean cleaning liquid is always present in the cleaning tank. It has been added and circulated. However, since there is a cleaning liquid containing dirt without overflowing in the cleaning tank, the cleaning liquid in the cleaning tank is only diluted with the clean cleaning liquid supplied. For this reason, when the workpiece is pulled up from the cleaning tank, there is a possibility that dirt in the cleaning liquid may adhere to the workpiece again.

  In view of the above problems, an object of the present invention is to provide a cleaning device that can always clean a workpiece with a clean cleaning liquid.

In order to solve the above problems, a cleaning apparatus according to the present invention includes a cleaning tank that stores cleaning liquid and immerses and cleans a member to be cleaned in the cleaning liquid, and forms a discharge port for discharging the cleaning liquid in the cleaning tank. In the cleaning apparatus provided with a storage tank that receives and stores the cleaning liquid discharged from the discharge port, the discharge port is formed at the bottom of the cleaning tank, and the bottom of the cleaning tank is inclined downward toward the discharge port, Furthermore, an opening / closing means for opening and closing the discharge port is provided so that every time the cleaning cycle is completed, all the cleaning liquid is discharged from the discharge port, and the cleaning liquid in the cleaning tank is replaced every cleaning cycle, and the cleaning liquid in the cleaning tank when discharged into the reservoir tank, the washing liquid in the storage tank to drive the pump is ejected into the bottom of the cleaning tank, the precipitated dust or dirt with wash into the outlet at the bottom, is pulled up from the cleaning solution The After dropping wipe cleaning liquid adhering to the workpiece by blowing compressed air in over click, characterized in that to end the one washing cycle by closing the outlet.

  In the present invention, since all the cleaning liquid in the cleaning tank is discharged and newly filled with the cleaning liquid every cleaning cycle, cleaning is not started in a state where dirt such as chips drifts in the cleaning liquid. Further, since the discharge port is formed at the bottom of the cleaning tank, all the dirt deposited on the bottom of the cleaning tank can be efficiently discharged together with the cleaning liquid from the cleaning tank.

  In addition, when discharging | emitting a washing | cleaning liquid, it is desirable to discharge | emit quickly. For this reason, it is desirable not to provide anything in the discharge port that would cause discharge resistance when the discharge port is open.

  Therefore, the opening / closing means for the discharge port includes a plate-shaped blocking member that closes the discharge port by coming into contact with the outside of the cleaning tank, and is configured to open the discharge port by separating the blocking member from the discharge port. Then, it is possible to open and close the discharge port without disposing a resistor in the discharge port.

  By the way, when the cleaning liquid in the cleaning tank is discharged into the storage tank, if at least a part of the cleaning liquid is jetted to the bottom of the cleaning tank, the dirt deposited on the bottom of the cleaning tank is surely washed out to the discharge port. Can do.

  As is clear from the above description, the present invention replaces the cleaning liquid in the cleaning tank for each cleaning cycle, so that dirt or the like does not stay in the cleaning tank, and the workpiece that has been cleaned is contaminated. Does not reattach.

  Referring to FIG. 1, reference numeral 1 denotes a cleaning device according to the present invention. The cleaning device 1 includes, for example, a storage tank 2 that stores a water-soluble cleaning liquid, and a cleaning tank 3 that is supported above the storage tank 2 with a predetermined interval. A pump 21 driven by a motor is attached to the storage tank 2, and the cleaning liquid in the storage tank 2 is sent to the cleaning tank 3 through the delivery pipe 22.

  An opening 30 through which a work is taken in and out is provided on the ceiling surface of the cleaning tank 3. A cleaning tub 31 that holds the workpiece is mounted in the cleaning tank 3 so as to be movable up and down. The cleaning bowl 31 is lifted and lowered by the lifting cylinder 12. Reference numeral 11 denotes a control box for controlling the operation of the cleaning apparatus 1 and has a built-in sequencer. Reference numeral 23 denotes a saddle filter for preventing relatively large chips and the like from entering the storage tank 2.

  With reference to FIGS. 2 and 3, the cleaning liquid in the storage tank 2 is sucked from the suction filter 20, and is branched to the shower nozzle 51 and the bottom cleaning nozzle 52 through the replaceable filter 24. Therefore, when the pump 21 is driven, the cleaning liquid is vigorously ejected from both the shower nozzle 51 and the bottom cleaning nozzle 52 into the cleaning tank 3.

  Further, an air shower nozzle 53 and a bubbling nozzle 54 are attached in the cleaning tank 3 and are piped so as to be supplied with compressed air from the compressor C. However, the valve 53a that opens and closes the air passage between the air shower nozzle 53 and the compressor C and the valve 54a that opens and closes the air passage between the bubbling nozzle 54 and the compressor C can be opened and closed separately.

  The bottom of the cleaning tank 3 is formed so as to be inclined downward from the outer peripheral edge toward the inside, and a cylindrical discharge port 32 having a relatively large diameter is formed at the lowest position. The lower end opening of the discharge port 32 is configured to be opened and closed by a plate-like opening / closing plate 4. Reference numeral 33 denotes an overflow pipe for overflowing the cleaning liquid in the cleaning tank 3 so that the liquid level of the cleaning liquid in the cleaning tank 3 does not exceed a predetermined height.

  When the injection of the cleaning liquid into the cleaning tank 3 is started, the cleaning liquid sprayed from the shower nozzle 51 is sprayed on the work in the cleaning bowl 31 as shown in FIG. The dirt can be washed away. Further, as shown in FIG. 4, the cleaning liquid sprayed from the bottom cleaning nozzle 52 at the time of discharging flushes the bottom of the cleaning tank 3 and rinses chips and dirt deposited on the bottom to the discharge port 32.

  Incidentally, the opening / closing plate 4 is opened and closed by a cylinder 41 as shown in FIG. The opening / closing plate 4 is swingably attached to a column 42 fixed to the cleaning tank 3, and swings up and down around a swing shaft 43. Therefore, when the rod of the cylinder 41 is protruded, the opening / closing plate closes the discharge port 32, and conversely, when the rod of the cylinder 41 is retracted, the opening / closing plate 4 swings downward and the discharge port 32 is opened. And in the state which the discharge port 32 was open | released, what becomes resistance of the flow of the washing | cleaning liquid discharged | emitted to the lower storage tank 2 through the discharge port 32 has a structure which does not exist in the discharge port 32. .

  The operation of the cleaning apparatus 1 having the above configuration will be described with reference to FIG. Before the start of cleaning, the cleaning rod 31 is raised by the elevating cylinder 12, and a workpiece to be cleaned is placed in the cleaning rod 31. When a cleaning start switch (not shown) is pushed in this state, the rod of the elevating cylinder 12 is lowered and the cleaning rod 31 is lowered. At the same time, the pump 21 is operated, and the injection of the cleaning liquid into the cleaning tank 3 is started. At this time, the cleaning liquid sprayed from the shower nozzle 51 is sprayed onto the workpiece. When a predetermined time elapses, the cleaning tank 3 is sufficiently filled with the cleaning liquid.

  Then, air is ejected from the bubbling nozzle 54, the cleaning liquid is bubbled and stirred, and the elevating cylinder 12 is operated up and down to raise and lower the cleaning basket 31 in the cleaning tank 3. During that time, the pump 21 continues to operate, so that oil and the like floating on the surface of the cleaning liquid is discharged from the overflow pipe 33 to the storage tank 2 and does not remain in the cleaning tank 3.

  When the cleaning is completed, the cleaning tub 31 is raised, and a clean cleaning agent sprayed from the shower nozzle 51 is sprayed on the workpiece for rinsing, and at the same time, the discharge port 32 is opened to discharge. Since the discharge port 32 has a large diameter, the cleaning liquid in the cleaning tank 3 is immediately discharged, and the bottom of the cleaning tank 3 is exposed. A cleaning liquid sprayed from the bottom cleaning nozzle 52 is sprayed on the bottom to wash away dirt such as chips deposited on the bottom.

  Then, after the pump 21 was stopped, the cleaning liquid adhering to the workpiece was wiped off with the compressed air ejected from the air shower nozzle 53, and then the discharge port 32 was closed to complete one cleaning cycle.

  Note that the cleaning liquid is not limited to water-soluble, and may be an oil-based cleaning liquid. Moreover, although the raising / lowering cylinder was raised / lowered during washing | cleaning, you may raise / lower while rotating the washing bowl 31 or rotating. By rotating the rotary rod 31 in this way, the cleaning liquid can be efficiently sprayed onto the workpiece even if the number of shower nozzles 51 is reduced.

  The present invention is not limited to the embodiment described above, and various modifications may be made without departing from the scope of the present invention.

The figure which shows the structure of one embodiment of this invention Diagram showing cleaning fluid and compressed air supply path Sectional view showing the structure of the washing tank Perspective view showing the bottom of the washing tank Diagram showing opening and closing operation of the opening and closing plate Timing chart showing the operation of the cleaning device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cleaning apparatus 2 Storage tank 3 Cleaning tank 51 Shower nozzle 52 Bottom part cleaning nozzle 53 Air shower nozzle 54 Bubbling nozzle

Claims (2)

A cleaning tank is provided for storing the cleaning liquid and immersing and cleaning the member to be cleaned in the cleaning liquid, and a discharge port for discharging the cleaning liquid in the cleaning tank is formed, and the cleaning liquid discharged from the discharge port is received and stored. In the cleaning apparatus provided with the storage tank, the discharge port is formed at the bottom of the cleaning tank, the bottom of the cleaning tank is inclined downward toward the discharge port, and an opening / closing means for opening and closing the discharge port is provided. When the cleaning cycle is completed, all the cleaning liquid is discharged from the discharge port, the cleaning liquid in the cleaning tank is replaced every cleaning cycle, and the cleaning liquid in the cleaning tank is discharged into the storage tank. the washing liquid to drive the pump is ejected into the bottom of the cleaning tank, the precipitated dust or dirt with wash into the outlet at the bottom, attached to the workpiece by blowing compressed air to the work that has been pulled up from the cleaning solution washed After dropping wipe, cleaning device, characterized in that it ends the one washing cycle by closing the outlet.   The opening / closing means for the discharge port includes a plate-like closing member that closes the discharge port by coming into contact with the outside of the cleaning tank, and opens the discharge port by separating the closing member from the discharge port. The cleaning apparatus according to claim 1.

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