JPWO2018037834A1 - Cleaning device - Google Patents

Abstract

Provided is a cleaning apparatus capable of enhancing the effect of cleaning a workpiece and reducing the time required for the workpiece cleaning process.
The cleaning chamber 12, the workpiece gripping tool 14 provided inside the cleaning chamber 12 for rotating the workpiece W, the cleaning nozzle 16 provided inside the cleaning chamber 12 for injecting the cleaning liquid L, and the cleaning chamber 12 staying inside. The cleaning device 10 includes a drain 20 for discharging the cleaning liquid L to the outside of the cleaning chamber 12 and a drain damper 18 for opening and closing the drain 20. The cleaning chamber 12 includes a side wall portion 22, a bottom The bottom wall portion 24 is configured such that the bottom end portions of the plurality of inclined bottom portions 26 are connected to each other, and the drain damper 18 is configured to have a plurality of drain dampers 18. One inclined bottom portion 26 of the inclined bottom portions 26 is formed.

Description

  The present invention relates to a cleaning device that removes foreign matter and dirt such as chips, cutting oil, and the like remaining on the surface of a workpiece, the surface of a workpiece, the inside of a casting core hole, the inside of a screw hole, etc., and improves the cleaning effect. The present invention relates to a cleaning device.

  There are many screw holes and water jacket holes in cylinder heads and cylinder blocks that are car engine parts. These automobile part workpieces are assembled after being machined. At this time, foreign matter and dirt such as chips and cutting oil remain on the surface of the work, inside the casting core hole, inside the screw hole, etc., so these foreign matters must be removed before assembling the parts.

  Here, conventionally, a cleaning chamber having an opening for loading a workpiece, a workpiece gripping jig installed in the cleaning chamber, a drive unit that is installed outside the cleaning chamber and rotationally drives the workpiece gripping jig, and the cleaning chamber There is known a cleaning device including a cleaning nozzle provided in the cleaning chamber, a drainage port for discharging the cleaning liquid retained in the cleaning chamber to the outside of the cleaning chamber, and a drainage damper for opening and closing the drainage port (patent) Reference 1).

JP 2012-45499 A

  However, in the cleaning device, the area of the drainage port is relatively small, and the cleaning liquid inside the cleaning chamber cannot be quickly drained to the outside of the cleaning chamber. Thereby, the drainage time of the cleaning liquid when draining from the inside of the cleaning chamber to the outside of the cleaning chamber has been long. This has been one cause of the long time required for the workpiece cleaning process.

  In view of the above circumstances, an object of the present invention is to provide a cleaning apparatus capable of enhancing the effect of cleaning a workpiece and reducing the time required for the workpiece cleaning process.

  The present invention provides a cleaning chamber, a workpiece gripping jig provided inside the cleaning chamber for rotating a workpiece, a cleaning nozzle provided in the cleaning chamber for injecting a cleaning liquid, and the staying in the cleaning chamber A cleaning apparatus comprising: a drain port for discharging cleaning liquid to the outside of the cleaning chamber; and a drain damper for opening and closing the drain port, wherein the cleaning chamber includes a side wall portion and a bottom wall portion. The bottom wall portion is configured such that the bottom end portions of a plurality of inclined bottom portions are connected to each other, and the drainage damper is one of the plurality of inclined bottom portions. Constitutes two sloping bottoms.

  The cleaning chamber has a workpiece passage opening for carrying the workpiece into and out of the cleaning chamber, and an opening / closing shutter for opening and closing the workpiece passage opening. It is preferable that at least a part is constituted by the opening / closing shutter.

  It is preferable that a sealing material is provided at an opening edge of the workpiece passage opening, and the opening / closing shutter closes the workpiece passage opening via the sealing material.

  An air supply nozzle that injects an air flow toward the workpiece is provided inside the cleaning chamber, and the cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays within the cleaning chamber to the maximum extent. The air supply nozzle is preferably provided at a position where the cleaning liquid is not submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent.

  A cleaning liquid tank for storing the cleaning liquid discharged from the liquid discharge port of the cleaning chamber; and the cleaning liquid leaking from the cleaning chamber is disposed in the vicinity of a contact portion between the opening / closing shutter and the workpiece passage opening. It is preferable to have a cleaning liquid receiving part that leads to the cleaning liquid tank.

  It is preferable to have a damper drive source for driving the drainage damper, and to use an air cylinder as the damper drive source.

  It is preferable to have a pressure member that presses the opening / closing shutter against the sealing material, and an air cylinder is used as the pressure member.

  It is preferable to have a shutter drive source for driving the open / close shutter, and use a servo motor as the shutter drive source.

  According to the present invention, the cleaning chamber is configured to have a concave shape or a box shape with the side wall portion and the bottom wall portion. The workpiece is rotated by the workpiece gripping jig to the cleaning liquid staying in the cleaning chamber, and the drainage damper opens the drainage port at once, so that dirt and foreign matter such as the surface of the workpiece and screw holes are removed from the drainage port. It is pulled away from the workpiece by being pulled by the surface tension of the cleaning liquid discharged from the workpiece.

  Here, since the bottom wall portion is configured so that the lowermost tip portions of the plurality of inclined bottom portions are connected to each other, it is possible to reduce the volume of the cleaning liquid by reducing the internal volume of the cleaning chamber. This can shorten the time required for the cleaning liquid to stay in the cleaning chamber.

  At the same time, since the drain damper constitutes one inclined bottom portion of the plurality of inclined bottom portions, the cleaning liquid inside the cleaning chamber can be rapidly drained as if the inclined bottom portion is removed when the drain damper is opened. As a result, the tensile force of the cleaning liquid when leaving the workpiece increases, and the force for separating dirt and foreign matter from the workpiece increases. As a result, the work cleaning effect is enhanced. In addition, the time required for the workpiece cleaning process can be shortened.

  Since at least a part of the side wall portion is configured by an open / close shutter, it is possible to form a work passage opening portion on the side wall portion of the cleaning chamber for carrying a workpiece into and out of the cleaning chamber. become. As a result, a heavy workpiece can be moved in the horizontal direction, carried into the cleaning chamber, and carried out to the outside of the cleaning chamber.

  Since the opening / closing shutter closes the workpiece passage opening through the sealing material, the sealing performance between the opening / closing shutter and the workpiece passage opening is improved. Thereby, even if the side wall portion of the cleaning chamber is configured by an open / close shutter, the cleaning liquid inside the cleaning chamber can be prevented from leaking to the outside during the cleaning of the workpiece.

  The cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent, so that a vortex or jet can be generated in the cleaning liquid, and the cleaning effect of the workpiece is enhanced. Further, the air supply nozzle is provided at a position where the cleaning liquid does not submerge when the cleaning liquid stays in the cleaning chamber to the maximum extent, so that the cleaning liquid can be prevented from entering the air supply nozzle. It is possible to prevent the cleaning liquid from adhering again to the workpiece after cleaning when the flow is jetted.

  In the vicinity of the contact area between the open / close shutter and the workpiece passage opening, there is a cleaning liquid receiving part that guides the cleaning liquid leaked from the cleaning chamber to the cleaning liquid tank, so that the leaked cleaning liquid can be properly collected and reused. Become.

  Cost reduction can be realized by having a damper drive source for driving the drainage damper and using an air cylinder as the damper drive source.

  Cost reduction can be realized by having a pressure member that presses the opening / closing shutter against the seal material and using an air cylinder as the pressure member.

  By having a shutter drive source for driving the open / close shutter and using a servo motor as the shutter drive source, high-precision drive control of the open / close shutter becomes possible.

It is a block diagram at the time of the washing | cleaning process of the workpiece | work of the washing | cleaning apparatus of this invention. It is a block diagram at the time of the drainage process of the washing | cleaning liquid of the washing | cleaning apparatus of this invention. It is a block diagram at the time of the blow process of the washing | cleaning apparatus of this invention. It is a block diagram of the state which the opening-and-closing shutter of the washing | cleaning apparatus of this invention opened the workpiece | work passage opening part.

  A cleaning apparatus according to this embodiment of the present invention will be described with reference to the drawings. A part to be cleaned by the cleaning apparatus of this embodiment is referred to as a workpiece for convenience of explanation.

  The workpiece is, for example, a casting formed by casting, and particularly an automobile part.

  In addition to automobile parts, automobile parts include motorcycle parts such as motorcycles (motorcycles), tricycle parts, and the like.

  As shown in FIGS. 1 to 3, the cleaning device 10 mainly includes a cleaning chamber 12, a workpiece gripping tool 14 provided inside the cleaning chamber 12 to rotate the workpiece W, and a cleaning liquid provided inside the cleaning chamber 12. A cleaning nozzle 16 for injecting L; a drain port 20 for discharging the cleaning liquid L staying in the cleaning chamber 12 to the outside of the cleaning chamber 12; and a drain damper 18 for opening and closing the drain port 20. Yes.

  The cleaning chamber 12 is configured to have a concave shape or a box shape by a plurality of side wall portions 22 and a bottom wall portion 24. For this reason, the cleaning liquid L can stay inside the cleaning chamber 12 which is a recess.

  The bottom wall portion 24 is configured such that the lowermost tip portions of two inclined bottom portions 26 are connected to each other. In addition, the bottom wall part 24 is not limited to being comprised by the two inclination bottom parts 26, and may be comprised by one inclination bottom part or three or more some inclination bottom parts.

  In the present embodiment, the drainage port 20 is formed in one of the two inclined bottom portions 26. The drainage ports 20 may be formed in all the inclined bottom portions 26, and the number of the drainage dampers 18 may be adjusted so as to open and close all the drainage ports 20.

  Of the two inclined bottom portions 26, one inclined bottom portion 26 is configured such that the inclined surface is longer than the other inclined bottom portion 26, and the drainage port 20 is formed so as to occupy many regions of the long inclined surface. Also good. Thereby, it can set so that the opening area of the drainage port 20 may become large.

  The drain damper 18 operates to open or close the drain port 20. When the drain damper 18 is lowered, the drain port 20 is opened, and the cleaning liquid L inside the cleaning chamber 12 falls freely from the drain port 20. On the other hand, when the drain damper 18 is raised, the drain port 20 is closed, and the cleaning liquid L can stay inside the cleaning chamber 12. Thus, the drain damper 18 functions as a kind of on-off valve that controls the stay or discharge of the cleaning liquid L inside the cleaning chamber 12 at the same time as constituting the inclined bottom portion 26.

  The drain damper 18 is operated by a damper drive source 28. The damper drive source 28 is driven by a well-known drive source such as a motor, but low cost can be realized by using the air cylinder 30 in particular.

  The damper drive source 28 or the air cylinder 30 is disposed at a position close to the opening / closing shutter 32, and a large opening area of the drainage port 20 can be secured.

  A workpiece passage opening 34 for carrying the workpiece W into and out of the cleaning chamber 12 is formed in at least a part of, for example, one side wall portion 22 of the cleaning chamber 12.

  The cleaning chamber 12 has an open / close shutter 32 for opening or closing the workpiece passage opening 34. The opening / closing shutter 32 is configured to be movable in the vertical direction. As shown in FIG. 1, when the opening / closing shutter 32 is lowered, the workpiece passage opening 34 is closed, so that the opening / closing shutter 34 is between the inside and the outside of the cleaning chamber 12. The movement of the workpiece W becomes impossible.

  On the other hand, as shown in FIG. 4, when the open / close shutter 32 is raised, the workpiece passage opening 34 is opened, and the workpiece W can be moved between the inside and the outside of the cleaning chamber 12. Thus, the opening / closing shutter 32 functions as an opening / closing gate for enabling the work W to be carried in and out, as well as constituting at least a part of the side wall portion 22.

  In particular, since at least a part of the side wall portion 22 is configured by the open / close shutter 32, the work W is carried into and out of the cleaning chamber 12 on the side wall portion 22 of the cleaning chamber 12. The work passage opening 34 can be formed and opened / closed. This makes it possible to move the heavy workpiece W along the horizontal direction through the workpiece passage opening 34.

  Here, as shown in FIGS. 1 to 3, a sealing material 36, which is an elastic body such as rubber, is provided at the opening edge of the workpiece passage opening 34. The opening / closing shutter 32 closes the workpiece passage opening 34 via the sealing material 36. At this time, a predetermined pressure is applied to the sealing material 36 from the opening / closing shutter 32, and the sealing material 36 is elastically deformed. Thereby, it is possible to prevent the cleaning liquid L staying inside the cleaning chamber 12 from leaking outside through the gap between the opening / closing shutter 32 and the workpiece passage opening 34.

  A link mechanism 38 is connected to the open / close shutter 32 and is operated along a vertical direction by a shutter drive source 40 that controls driving of the link mechanism 38. As the shutter drive source 40, a known drive source such as an air cylinder, a hydraulic cylinder, or a motor can be used. However, by configuring the shutter drive source 40 with the servo motor 42 in particular, precise position control of the open / close shutter 32 is possible.

  In the vicinity of the opening / closing shutter 32, a pressing member 44 that presses the opening / closing shutter 32 against the sealing material 36 is provided. The pressurizing member 44 is constituted by a well-known pressurizing unit, but by using the air cylinder 46, cost reduction can be realized. As a result, the opening / closing shutter 32 is pressed against the sealing material 36 by the pressure member 44, so that the sealing performance of the sealing material 36 is remarkably enhanced.

  A cleaning liquid tank 48 for storing the cleaning liquid L discharged from the liquid discharge port 20 of the cleaning chamber 12 is provided at a position below the cleaning chamber 12. As a result, the cleaning liquid L drained from the cleaning chamber 12 at once is poured into the cleaning liquid tank 48 as it is by free fall. The cleaning liquid L poured into the cleaning liquid tank 48 is reused after being subjected to a predetermined process.

  A cleaning liquid receiving section 50 for guiding the cleaning liquid L leaked from the cleaning chamber 12 to the cleaning liquid tank 48 is provided outside the cleaning chamber 12 and in the vicinity of the contact portion between the opening / closing shutter 32 and the workpiece passage opening 34. doing. As a result, the cleaning liquid L that has dropped from the work W when the work is unloaded or the cleaning liquid L that has overflowed during the work cleaning process in the cleaning chamber 12 falls to the cleaning liquid receiving portion 50 and is finally guided to the cleaning liquid tank 48. Thereby, even if the cleaning liquid L leaks out, the cleaning liquid L can be returned to the cleaning liquid tank 48 and can be reused.

  A cleaning nozzle 16 that ejects the cleaning liquid L is provided inside the cleaning chamber 12. During the cleaning process, the cleaning liquid L sprayed from the cleaning nozzle 16 directly hits the workpiece W or generates a jet inside the cleaning liquid L, so that the cleaning effect of the workpiece W is enhanced.

  An air supply nozzle 52 that injects an air flow toward the workpiece W is provided inside the cleaning chamber 12. During the cleaning process, the air flow sprayed from the air supply nozzle 52 directly hits the workpiece W or forms a large air flow inside the cleaning chamber 12 to scatter moisture, oil, etc., such as cleaning liquid from the surface of the workpiece W. Let

  Here, the cleaning nozzle 16 is provided at a position where the cleaning liquid L is submerged when the cleaning liquid L stays in the interior of the cleaning chamber 12 to the maximum, while the air supply nozzle 52 has the maximum cleaning liquid L in the cleaning chamber 12. It is provided at a position where it does not submerge when it stays in the limit.

  Thereby, in the process of cleaning the workpiece W, the workpiece W and the cleaning nozzle 16 are submerged, but the air supply nozzle 52 is not submerged. For this reason, the cleaning liquid L does not enter the air supply nozzle 52 and can be prevented from being contaminated with oil or the like contained in the cleaning liquid L.

  On the other hand, the cleaning nozzle 16 can generate a vortex or jet in the cleaning liquid L by jetting the cleaning liquid L in a state where it is submerged in the cleaning liquid L, and the cleaning effect can be obtained by the vortex or jet flowing on the work W. Becomes higher.

  Between the cleaning nozzle 16 and the air supply nozzle 52, a cleaning liquid recovery unit 54 that recovers the cleaning liquid L overflowing from the cleaning chamber 12 is provided. As a result, if the cleaning liquid L exceeding the maximum is retained in the cleaning chamber 12, the cleaning liquid L overflows into the cleaning liquid recovery unit 54 and discharges the cleaning liquid L remaining in the cleaning chamber 12 to the outside of the cleaning chamber 12. The volume of the cleaning liquid L staying in the cleaning chamber 12 can be controlled.

  Note that the cleaning liquid recovery unit 54 may communicate with the cleaning liquid tank 48. In this configuration, the cleaning liquid L that has entered the cleaning liquid recovery section 54 can be returned to the cleaning liquid tank 48 and can be reused.

  Inside the cleaning chamber 12 is provided a workpiece gripping tool 14 that rotates the workpiece W in a predetermined direction while gripping the workpiece W with a clamp or the like. As a result, the workpiece W is rotationally driven in a predetermined direction by the workpiece gripping jig 14.

  The workpiece gripping jig 14 is provided with a drive unit (not shown). As the drive unit, for example, a known drive source such as an air cylinder, a hydraulic cylinder, and a motor can be used. In particular, by using a servo motor, precise position control of the workpiece W can be performed.

  Next, the operation of the cleaning apparatus 10 according to this embodiment will be described.

  Each process of the cleaning apparatus 10 mainly includes three processes, that is, a cleaning process, a draining process, and a blowing process, which will be described.

[Washing process]
First, the cleaning process will be described. In the cleaning process, normally, the operation of the air supply nozzle 52 is stopped and the air flow is not jetted.

  As shown in FIG. 1, in the cleaning process, the drain damper 18 closes the drain port 20. At this time, the drainage damper 18 closes the drainage port 20 to constitute a part of the inclined bottom portion 26, and allows the cleaning liquid L to stay inside the cleaning chamber 12.

  The workpiece W is clamped and fixed by the workpiece gripping jig 14. Since the workpiece gripping jig 14 is driven by NC-controlling the servo motor with the drive unit, the cleaning posture, time, turning speed, and cleaning liquid discharge posture can be set optimally.

  The opening / closing shutter 32 is pressed against the sealing material 36 by a pressurizing member 44 that is an air cylinder 46 and closes the workpiece passage opening 34. The open / close shutter 32 constitutes a part of the side wall portion 22 and allows the cleaning liquid L to stay in the cleaning chamber 12.

  In the cleaning process, the cleaning liquid L is sprayed from the cleaning nozzle 16, and the workpiece W is cleaned by directly hitting the rotating workpiece W by the workpiece gripping jig 14, and the workpiece W and the cleaning nozzle 16 are disposed inside the cleaning chamber 12. The cleaning liquid L stays up to a position high enough to submerge the water. In this state, the cleaning liquid L is sprayed from the cleaning nozzle 16 submerged in the cleaning liquid L while the work W in a completely submerged state is rotated by the work gripping jig 14.

  If the cleaning liquid L stays to the maximum extent, the cleaning nozzle 16 is submerged in the cleaning liquid L, so that the cleaning liquid L sprayed from the cleaning nozzle 16 swallows the surrounding water and forms a large vortex or jet inside the cleaning liquid L. To do. As a result, the vortex or jet of the cleaning liquid L collides over a wide range of the work W, and the area of the work W other than the direct hit location of the cleaning liquid L from the cleaning nozzle 16 is cleaned.

  In the cleaning process, the cleaning liquid L stays in the cleaning chamber 12 as much as possible and is rotated while the workpiece W is completely submerged, so that dirt and foreign matter adhering to each hole of the workpiece W are centrifuged. The force can be used to drop it outside the hole, increasing the cleaning effect.

  Here, since the bottom wall portion 24 of the cleaning chamber 12 is composed of the inclined bottom portion 26, the volume of the cleaning chamber 12 is reduced as compared with a case where the bottom wall portion extends in the horizontal direction. Can do. Thereby, the capacity | capacitance of the washing | cleaning liquid L which retains in the inside of the washing | cleaning chamber 12 can be decreased, and the time until the washing | cleaning liquid L stays to the maximum becomes short. As a result, the time for the cleaning process can be shortened.

  The air supply nozzle 52 stops jetting airflow during the cleaning process, but is provided at a position higher than the water surface of the cleaning liquid L, so that the cleaning liquid L does not enter the air supply nozzle 52. Thereby, the oil component contained in the cleaning liquid L does not adhere to the air supply nozzle 52 and is not soiled. As a result, at the time of the blow process after the drainage process, dirt components such as oil are not mixed in the air flow ejected from the air supply nozzle 52, and the dirt components do not adhere to the work W on which the air flow collides.

[Drainage process]
Next, the drainage process will be described. In the cleaning process, normally, the operation of the air supply nozzle 52 is stopped and the air flow is not jetted.

  As shown in FIG. 2, in the drainage process, the drainage damper 18 is lowered by the rotational drive, and the drainage port 20 is opened at once. As a result, the cleaning liquid L retained in the cleaning chamber 12 freely falls from the drainage port 20. In particular, since the drainage port 20 is formed so that the opening area of the drainage port 20 is increased and the drainage damper 18 constitutes one tilted bottom portion 26 of the plurality of tilted bottom portions 26, the tilted bottom portion is opened when the drainage damper 18 is opened. The drainage port 20 is opened as if 26 is removed. For this reason, the cleaning liquid L flows into the drain port 20 at a stretch and is discharged from the inside of the cleaning chamber 12 to the outside. As a result, the time required for the work W draining process can be shortened.

  Here, the cleaning liquid L that has been in contact with the workpiece W is affected by the viscosity, surface tension, etc. of the cleaning liquid L between the workpiece W and a predetermined attractive force acts between the workpiece W and the cleaning liquid L. However, when the cleaning liquid L inside the cleaning chamber 12 is discharged at once, the cleaning liquid L is pulled away from the work W at once, and the phenomenon that the cleaning liquid L is strongly peeled off from the surface of the work W occurs. As a result, dirt and foreign matter adhering to the surface of the workpiece W and even the cleaning liquid L are reliably removed from the workpiece W. As a result, the cleaning effect of the workpiece W is remarkably increased.

  In particular, although the inlet of the hole such as the water jacket of the workpiece W is narrow and the inside is deep and the portion that is usually difficult to clean can be cleaned while submerged, the cleaning liquid L inside the hole of the workpiece W can be easily drained in a posture where By opening the damper 18 and rapidly removing the cleaning liquid L in the direction of the arrow, dirt and foreign matter can be reliably removed from the inside of the deep hole of the workpiece W and cleaning can be performed.

  Since the drainage damper 18 functions as a kind of on-off valve that controls the staying or discharging of the cleaning liquid L inside the cleaning chamber 12 at the same time as constituting the inclined bottom portion 26, the number of parts of the cleaning device 10 can be reduced, downsizing and Cost reduction can be realized.

[Blow process]
Next, the blow process will be described. In the blow process, normally, the operation of the air supply nozzle 52 starts and the air flow is jetted. On the other hand, the cleaning liquid L is not ejected from the cleaning nozzle 16.

  As shown in FIG. 3, in the blow process, one closed circulation channel 56 is formed inside the cleaning device 10. An inlet portion of the cleaning chamber 10 is opened, and an outlet portion is formed by the drainage port 20.

  The operation of the air supply nozzle 52 is started, an air flow is injected, and an air flow that is an air flow is generated in the closed circulation channel 56. In the cleaning chamber 10, the workpiece W is placed in an airflow environment. For this reason, the water | moisture content etc. which adhered to the workpiece | work W are pulled by the air in airflow environment, are peeled from the workpiece | work W, and are removed. In the airflow environment, air flies at a predetermined flow velocity.

  At the same time, since the air supply nozzle 52 is operating, the air flow injected from the air supply nozzle 52 directly hits the workpiece W.

  Due to these blowing effects, the cleaning liquid L is scattered from the surface of the workpiece W.

  The air supply nozzle 52 is provided at a position that does not submerge when the cleaning liquid L stays in the cleaning chamber 10 to the maximum extent, so that the air supply nozzle 52 is not immersed in the cleaning liquid L from the air supply nozzle 52. It is possible to prevent the cleaning liquid L from adhering again to the cleaned workpiece W when the air flow is injected. As a result, the workpiece W is not soiled in the blowing process.

  In addition, the said embodiment is only the illustration for demonstrating this invention, and can change variously in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 10 Cleaning apparatus 12 Cleaning chamber 14 Work holding jig 16 Cleaning nozzle 18 Drain damper 20 Drain outlet 22 Side wall part 24 Bottom wall part 26 Inclined bottom part 28 Damper drive source 30 Air cylinder 32 Opening / closing shutter 34 Work passage opening part 36 Sealing material 38 Link Mechanism 40 Shutter drive source 42 Servo motor 44 Pressure member 46 Air cylinder 48 Cleaning liquid tank 50 Cleaning liquid receiving part 52 Air supply nozzle 54 Cleaning liquid recovery part 56 Circulating flow path L Cleaning liquid W Workpiece

The present invention provides a cleaning chamber, a workpiece gripping jig provided inside the cleaning chamber for rotating a workpiece, a cleaning nozzle provided in the cleaning chamber for injecting a cleaning liquid, and the staying in the cleaning chamber A cleaning apparatus comprising: a drain port for discharging cleaning liquid to the outside of the cleaning chamber; and a drain damper for opening and closing the drain port, wherein the cleaning chamber includes a side wall portion and a bottom wall portion. The bottom wall portion is configured such that the bottom end portions of a plurality of inclined bottom portions are connected to each other, and the drainage damper is one of the plurality of inclined bottom portions. Forming an inclined bottom, and the cleaning chamber includes a workpiece passage opening for carrying the workpiece into and out of the cleaning chamber, and an opening / closing shutter for opening and closing the workpiece passage opening. And at least a part of the side wall portion is The opening / closing shutter is configured to prevent the cleaning liquid staying inside the cleaning chamber from leaking to the outside during the cleaning of the workpiece, and a sealing material is provided at an opening edge of the workpiece passage opening, and the opening / closing shutter Closes the workpiece passage opening through the sealing material, and has a pressure member in the vicinity of the opening / closing shutter to press the opening / closing shutter against the sealing member, and is provided inside the cleaning chamber. The air supply nozzle for injecting an air flow to the workpiece, and the cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays in the interior of the cleaning chamber. Is provided in a position where the cleaning liquid does not submerge when the cleaning liquid stays in the interior of the cleaning chamber, and before the overflow from the cleaning chamber between the cleaning nozzle and the air supply nozzle. To have a cleaning liquid recovery section for recovering the cleaning solution.

A cleaning liquid tank for storing the cleaning liquid discharged from the liquid discharge port of the cleaning chamber; and the cleaning liquid leaking from the cleaning chamber is disposed in the vicinity of a contact portion between the opening / closing shutter and the workpiece passage opening. It is preferable to have a cleaning liquid receiving part that leads to the cleaning liquid tank .

The cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent, so that a vortex or jet can be generated in the cleaning liquid, and the cleaning effect of the workpiece is enhanced. Further, the air supply nozzle is provided at a position where the cleaning liquid does not submerge when the cleaning liquid stays in the cleaning chamber to the maximum extent, so that the cleaning liquid can be prevented from entering the air supply nozzle. It is possible to prevent the cleaning liquid from adhering again to the workpiece after cleaning when the flow is jetted. Between the cleaning nozzle and the air supply nozzle, there is a cleaning liquid recovery unit that recovers the cleaning liquid overflowing from the cleaning chamber. As a result, if a maximum amount of cleaning liquid stays inside the cleaning chamber, the cleaning liquid overflows into the cleaning liquid recovery section and the cleaning liquid staying in the cleaning chamber can be discharged to the outside of the cleaning chamber. The volume of the remaining cleaning liquid can be controlled.

Claims (9)

A cleaning chamber, a workpiece gripping jig provided inside the cleaning chamber for rotating the workpiece, a cleaning nozzle provided inside the cleaning chamber for injecting a cleaning liquid, and the cleaning liquid staying in the cleaning chamber being cleaned A cleaning apparatus comprising: a drainage port for discharging to the outside of the chamber; and a drainage damper for opening and closing the drainage port,
The cleaning chamber is configured to have a box shape with a side wall portion and a bottom wall portion,
The bottom wall portion is configured such that lowermost tip portions of a plurality of inclined bottom portions are connected to each other,
The drainage damper constitutes one inclined bottom portion of the plurality of inclined bottom portions. The cleaning chamber has a workpiece passage opening for carrying the workpiece into and out of the cleaning chamber, and an opening / closing shutter for opening and closing the workpiece passage opening.
The cleaning apparatus according to claim 1, wherein at least a part of the side wall portion is configured by the opening / closing shutter. A sealing material is provided at the opening edge of the workpiece passage opening,
The cleaning apparatus according to claim 2, wherein the opening / closing shutter closes the workpiece passage opening through the sealing material. An air supply nozzle for injecting an air flow to the workpiece in the cleaning chamber;
The cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent.
The cleaning apparatus according to claim 1, wherein the air supply nozzle is provided at a position where the cleaning liquid does not submerge when the cleaning liquid stays in the cleaning chamber to the maximum extent. An air supply nozzle for injecting an air flow to the workpiece in the cleaning chamber;
The cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent.
The cleaning apparatus according to claim 2, wherein the air supply nozzle is provided at a position where the air is not submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent. An air supply nozzle for injecting an air flow to the workpiece in the cleaning chamber;
The cleaning nozzle is provided at a position where the cleaning liquid is submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent.
The cleaning apparatus according to claim 3, wherein the air supply nozzle is provided at a position where the air is not submerged when the cleaning liquid stays in the cleaning chamber to the maximum extent. A cleaning liquid tank for storing the cleaning liquid discharged from the drain port of the cleaning chamber;
The cleaning apparatus according to claim 2, further comprising a cleaning liquid receiving portion that guides the cleaning liquid leaked from the cleaning chamber to the cleaning liquid tank in the vicinity of a contact portion between the opening / closing shutter and the workpiece passage opening. . A cleaning liquid tank for storing the cleaning liquid discharged from the drain port of the cleaning chamber;
The cleaning apparatus according to claim 3, further comprising a cleaning liquid receiving portion that guides the cleaning liquid leaked from the cleaning chamber to the cleaning liquid tank in the vicinity of a contact portion between the opening / closing shutter and the workpiece passage opening. . A cleaning liquid tank for storing the cleaning liquid discharged from the drain port of the cleaning chamber;
The cleaning apparatus according to claim 4, further comprising a cleaning liquid receiving portion that guides the cleaning liquid leaked from the cleaning chamber to the cleaning liquid tank in the vicinity of a contact portion between the opening / closing shutter and the workpiece passage opening. .