JP2019181355A - Ultrasonic cleaning method and ultrasonic cleaning device of object to be cleaned - Google Patents

Abstract

To provide an ultrasonic cleaning method and an ultrasonic cleaning device of an object to be cleaned capable of performing deburring cleaning of a large amount of small components extremely efficiently when, for example, performing the deburring cleaning of a large amount of the small components or else.SOLUTION: In a plurality of cleaning tanks 3 arranged on a straight line at a specified pitch of interval, a storage container 8 which stores an object to be cleaned is pushed-in by a pushing member 12 of a conveyance frame 10, is successively conveyed from the cleaning tank 3 of the upstream side toward the cleaning tank 3 of the downstream side and is subjected to ultrasonic cleaning on each cleaning tank 3, on an upper part of each cleaning tank 3, a freely ascendable/descendable container retaining ascending/descending member 5 is provided and, when the container retaining ascending/descending member 5 retains the storage container 8, the container retaining ascending/descending member descends by a prescribed stroke so as to permit cleaning, meanwhile, the pushing member 12 of the conveyance frame 10 is retracted to conveyance path exterior so as to permit return to the original position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an ultrasonic cleaning technique that is particularly suitable for performing deburring and cleaning of a large amount of small parts extremely efficiently.

  Conventionally, when ultrasonically cleaning an object to be cleaned, various techniques are known for improving the cleaning efficiency by automatically transporting the object to be cleaned to a cleaning tank and then automatically transferring it to a rinsing tank or the like. (For example, refer to Patent Document 1 and Patent Document 2.) At this time, the object to be cleaned is transported to the upper part of the cleaning tank or the like along the horizontal direction, and the object to be cleaned is lowered on the cleaning tank or the like to be cleaned. In general, cleaning, rinsing and the like are performed.

JP-A-9-276633 JP 2003-164816 A

  However, in the conventional technique, when cleaning the object to be cleaned while automatically transporting the object, the object to be cleaned is transported to the upper part of the cleaning tank, and then the object to be cleaned is lowered and cleaned, and then transported downstream of the conveyance path. At that time, the transport mechanism is waiting on the upper side until the cleaning process in the cleaning tank is completed, and when the object to be cleaned that has been cleaned is returned upward, the object to be cleaned is transferred again in the horizontal direction. Therefore, for example, the efficiency of cleaning a large amount of small parts was not very good because a method of automatically conveying toward the next downstream tank or the like was adopted.

  Therefore, an object of the present invention is to provide a cleaning technique capable of performing extremely deburring of a large number of small parts and the like, particularly when performing ultrasonic cleaning.

  In order to achieve the above object, the present invention, as an ultrasonic cleaning method, transports an object to be cleaned along a straight line connecting a plurality of cleaning tanks arranged on a straight line at a predetermined pitch interval and these cleaning tanks. A transport mechanism, a plurality of container holding elevating members disposed above each cleaning tank, and an elevating mechanism for raising and lowering these container holding elevating members, from the upstream cleaning tank toward the downstream cleaning tank In the ultrasonic cleaning method of the object to be cleaned, the objects to be cleaned are conveyed at a predetermined pitch interval, then subjected to ultrasonic cleaning sequentially in each cleaning tank, and repeatedly cleaned up to the most downstream cleaning tank. After the object is stored in the storage container, the first step of inputting the storage container into the transport mechanism at the most upstream input portion of the transport path, and the transport path by pushing the input storage container with the pressing member of the transport mechanism Predetermined pitch toward the downstream side And a second step of transferring the container to the container holding lift member on the downstream side by engaging the slide portion at the upper end of the container with the rail portion of the container holding lift member, and the container holding lift member is moved to the lifting mechanism. A third step of ultrasonically cleaning the object to be cleaned in the cleaning tank by lowering the predetermined stroke by the fourth step, and a fourth step of moving the transport mechanism backward by a predetermined pitch and returning to the original position while ultrasonically cleaning the object to be cleaned. , A fifth step of raising the storage container in which the object to be cleaned is stored by a predetermined stroke, and a sixth step of moving the storage container forward by a predetermined pitch toward the downstream cleaning tank by the pressing member of the transport mechanism. At the same time that the container for storing a new object to be cleaned is put into the transport mechanism that has been returned to the most upstream input section in the fourth step. When moving forward, the container held by the container holding elevating member at each location is moved forward by a predetermined pitch with each pressing member, and then the procedure after the third step is followed by the cleaning tank in which each object to be cleaned is the most downstream Repeated until it was processed.

  By such a cleaning procedure, even when a large amount of small parts etc. need to be deburred and cleaned, the object to be processed can be stored in the storage container and efficiently cleaned while being transported downstream. . In particular, in the fourth step, while the object to be cleaned is being cleaned, the transport mechanism is retracted and returned to the original position, so that the timing of loading a new object to be cleaned can be speeded up. The cleaning process can be performed very efficiently.

  In addition, as a cleaning apparatus at this time, as in claim 3, a plurality of cleaning tanks arranged on a straight line at a predetermined pitch interval and an object to be cleaned are conveyed along a straight line connecting these cleaning tanks. A transport mechanism, a plurality of container holding lift members that are disposed above each cleaning tank and that can be moved up and down by a lift mechanism, and a container that can be loaded into the transport mechanism from the upstream side of the transport mechanism and can store an object to be cleaned In the ultrasonic cleaning apparatus including a container, as the transport mechanism, a plurality of pressing members capable of pushing a plurality of storage containers held by the plurality of container holding elevating members toward the downstream side at a predetermined pitch interval are provided. These pressing members can be moved in and out of the conveyance path by a protruding and retracting mechanism.

In this way, if the transport mechanism is provided with a plurality of pressing members, and each of the containers is pushed out by these pressing members to advance the transport path by a predetermined pitch, the transport mechanism is always transported to an accurate position with a constant stroke. In addition, since the pressing member can be moved freely, the transport mechanism can freely move back without interfering with the container holding lifting member and the like.
At this time, a rail portion extending in the horizontal direction is formed at the lower end portion of the container holding elevating member, and a slide portion that can be engaged with the rail portion of the container holding elevating member is formed at the upper end portion of the container. While the object to be cleaned is ultrasonically cleaned by immersing the lower end side of the storage container in the cleaning tank, the impact effect of the ultrasonic waves does not adversely affect the object to be cleaned. In other words, if the slide part of the storage container is formed at the lower end of the storage container, this slide part is also immersed in the cleaning tank, so the presence of the slide part causes ultrasonic shock to the object to be cleaned. However, if the slide part is formed on the upper end side of the container, the part will not be immersed in the cleaning tank and is effective for the object to be cleaned. Ultrasonic shock is transmitted to

  By adopting a method in which the container containing the object to be cleaned is pushed out by the pressing member and transported, and the container is lowered by a predetermined stroke and sequentially washed in the washing tank, accurate transportation and efficient cleaning are possible. However, at this time, during the cleaning, the transport mechanism is retracted and returned to the original position, thereby increasing the timing of loading the container and speeding up the processing, thereby further improving the cleaning efficiency. be able to. In addition, by forming the slide transport mechanism of the storage container on the upper end side of the storage container, the cleaning effect is enhanced without being disturbed during ultrasonic cleaning.

It is the side view which looked at a part of ultrasonic cleaning equipment concerning the present invention from the side of a conveyance way direction. It is a top view of the apparatus. It is a top view which shows the conveyance frame of the conveyance mechanism of the apparatus. It is a container holding | maintenance raising / lowering member, (a) is a top view, (b) is the front view seen from the carrying path direction, (c) is a side view. The container is shown, (a) is a plan view and (b) is a front view. It is explanatory drawing which shows the relationship between the storage container hold | maintained at a container holding | maintenance raising / lowering member, and a press member.

Embodiments of the present invention will be described with reference to the accompanying drawings.
The present invention is designed so that, for example, when deburring and cleaning a large number of small parts by ultrasonic cleaning, it can be performed very efficiently, and particularly has a feature in a technology for conveying an object to be cleaned. ing.

  That is, as shown in FIGS. 1 and 2, the ultrasonic cleaning apparatus 1 is disposed in an outer frame 2 disposed so as to surround the outer side of the apparatus and an intermediate portion in the height direction of the outer frame 2. And a plurality of ultrasonic cleaning tanks 3 arranged on a straight line at a predetermined pitch interval, a transport mechanism 4 for transporting an object to be cleaned along a linear direction connecting these cleaning tanks 3, and above each cleaning tank 3 A plurality of container holding elevating members 5 disposed on the upper and lower plates 5 are attached to an elevating plate 7 that is moved up and down by an elevating drive source 6 fixed to the outer frame 2 and moved up and down all at once. It is made free.

Further, when transporting the object to be cleaned, a large number of objects to be cleaned are stored in the storage container 8 described later, but the transport mechanism 4 is configured to be able to transport the storage container 8. The container holding elevating / lowering member 5 is configured so as to be capable of being sequentially transported toward the downstream cleaning tank 3 after holding the storage container 8 sent from the upstream and performing the cleaning process in the lower cleaning tank 3. .
Further, on the upstream side of the transport path in the transport direction by the transport mechanism 4, the container holding elevating member 5 is arranged at the same interval as the pitch interval of the cleaning tank 3 further upstream of the uppermost cleaning tank 3. The elevating member 5 is also integrally attached to the elevating plate 7, and this position serves as an input portion T for an object to be cleaned with respect to the transport mechanism 4.

  The ultrasonic cleaning tank 3 stores cleaning water that is circulated and degassed, for example, by a circulating deaeration means (not shown) of the cleaning tank 3. Deburring and cleaning of an object to be cleaned can be performed by the impact effect of ultrasonic cavitation oscillated toward the object.

  As shown in FIG. 3, the transport mechanism 4 includes a horizontal transport frame 10 that horizontally surrounds the vicinity of the upper portion of each cleaning tank 3. The transport frame 10 is fixed to the outer frame 2. The transport drive source 11 is made to reciprocate horizontally along the linear direction connecting the cleaning tanks 3.

  The transport frame 10 is provided with a pair of a plurality of pressing members 12 with the same interval as the interval between the cleaning tanks 3 across the conveyance path, and the pressure members 12 are provided with a pair with the conveyance path therebetween. It is made possible to move in and out from the carrying path by the drive-in / out drive source 13, and can swing from the protruding state (solid line) in FIG. 3 to the immersed state (broken line). At this time, the one side appearance drive source 13 can drive and control all the pressing members 12 on the same side simultaneously, and the other side drive source 13 can drive and control all the pressure members 12 on the other side simultaneously. However, in this embodiment, the left and right indentation drive sources 13 are controlled to be driven simultaneously in synchronization with the drive of the transport drive source 11 of the transport mechanism 4.

  As shown in FIG. 4, the container holding elevating member 5 includes a support member 14 fixed to the elevating plate 7 and a pair of rail members 15 attached below the support member 14 and facing each other at a predetermined interval. The lower end portion of the rail member 15 is a rail portion 15r that is U-shaped with the upper surface open toward the inside, and a slide portion 16 of the container 8 described below is provided on the rail portion 15r. Engageable.

  As shown in FIG. 5, the container 8 is a punching metal container, and has upper U-shaped slide parts 16 on the upper sides at both ends in the width direction with respect to the carrying path. As described above, the pair of slide portions 16 engages with the pair of rail portions 15r of the container holding elevating member 5 and is slidable along the carrying path direction. .

By the way, the conveyance of the container 8 by the conveyance mechanism 4 will be described with reference to FIG.
When the storage container 8 is transported by the transport mechanism 4, when the pressing member 12 of the transport frame 10 protrudes toward the inside of the transport path, the press member 12 protrudes in the vicinity of the container on the downstream side of the transport path of the storage container 8. It becomes a state. At this time, the pressing member 12 is in a height position where the pressing member 12 abuts on the storage container 8 but does not interfere with the container holding elevating member 5.

In this state, when the transport frame 10 moves toward the downstream side of the transport path, the pressing member 12 moves forward while pushing out the storage container 8, and the storage container 8 also moves forward.
Incidentally, if the pressing member 12 is immersed outside the carrying path after the conveying frame 10 has advanced by a predetermined pitch, the pressing member 12 does not interfere with other members even if the conveying frame 10 is retracted.

  A cleaning method in the ultrasonic cleaning apparatus as described above will be described.

First, in the loading part T on the upstream side of the carrying path in FIG. 1 and FIG. 2 (left side in the figure), the storage container 8 for storing the object to be cleaned that requires deburring cleaning is It is put into the member 5 and set.
That is, as shown in FIG. 6, the slide portions 16 at both ends of the storage container 8 are hooked on the upper portion of the rail portion 15 r of the container holding elevating member 5 at the place, and in the central portion of the rail portion 15 r with respect to the traveling direction. Positioned.

  Next, the conveyance drive source 13 is driven in a state where all the pressing members 12 are protruded, thereby the conveyance frame 10 of the conveyance mechanism 4 is advanced by a predetermined pitch, and the container 8 is advanced while being pushed by the pressing member 12. And the storage container 8 is transferred to the container holding | maintenance raising / lowering member 5 which waits in the upper position of the washing tank 3 adjacent to the downstream. At this time, the slide portion 16 of the storage container 8 slides in the horizontal direction through the rail portion 15r and is transferred to the rail portion 15r of the adjacent container holding elevating member 5, but is pushed forward by the pressing member 12, It can be advanced by the exact pitch.

Next, the raising / lowering drive source 6 operates in this state, all the container holding raising / lowering members 5 are lowered by a predetermined stroke, the container 8 is immersed in the lower washing tank 3, and ultrasonic cleaning is performed.
At this time, the storage container 8 is in a state in which the slide portion 16 at the upper end is suspended from the rail portion 15 r of the container holding elevating member 5, and a part below the storage container 8 is in the cleaning liquid in the cleaning tank 3. The impact effect of the cavitation that is immersed and oscillated in the cleaning liquid is transmitted to the object to be cleaned through the punching hole of the container 8 and the object to be cleaned is deburred, but the slide portion 16 of the container 8 is cleaned. Since it is in a state where it is not immersed in the tank 3, there is no inconvenience that disturbs the impact of the cavitation wave from being transmitted to the object to be cleaned.

  In addition, while the container holding elevating member 5 is lowered by a predetermined stroke and ultrasonic cleaning is being performed according to the above procedure, the conveyance frame 10 is moved backward by the control of the conveyance drive source 11. That is, when the transport drive source 11 is operated, prior to the retraction of the transport frame 10, first, all the pressing members 12 are immersed outside the transport path by the control of the retracting drive source 13, and then the transport frame 10 is set to a predetermined pitch. Retreat and return to the original position. And the next container 8 in which a new to-be-cleaned object is accommodated is set to the container holding | maintenance raising / lowering member 5 which returned to the insertion part T. FIG. Moreover, when the conveyance frame 10 moves backward and returns to the original position, all the pressing members 12 protrude into the carrying path by the drive control of the retracting drive source 13.

On the other hand, when the cleaning of each cleaning tank 3 for a predetermined time is completed, all the container holding elevating members 5 are raised and returned to their original positions by the control of the elevating drive source 6, and the conveying process by the next conveying mechanism 4 is started. The storage containers 8 at all locations move forward and are transferred to the downstream container holding lifting member 5. After that, the container holding elevating member 5 is moved down by a predetermined stroke and cleaned.
Then, the above operation is repeated.

  By the method as described above, the object to be cleaned accommodated in the container 8 is sequentially ultrasonically cleaned while being transferred from the upstream to the downstream cleaning tank 3, and is cleaned in the most downstream cleaning tank 3. After that, it is finished in a very beautiful state. In particular, since the transport frame 10 of the transport mechanism 4 is retracted during cleaning, and the container 8 to be loaded next can be quickly loaded, the cleaning efficiency is greatly improved. Can be improved. For this reason, in particular, when performing deburring cleaning of a large number of parts, it is extremely effective to apply this cleaning technique.

  In this embodiment, four cleaning tanks 3 are provided, and after cleaning is completed, a tank for rinsing and drying is arranged on the downstream side in a straight line, and advanced by the container holding lifting member in the same manner as cleaning. -Although raising and lowering is repeated until rinsing and drying are performed, such a downstream configuration is arbitrary.

  In addition, this invention is not limited to the above embodiments. Those which are substantially the same as the matters described in the claims of the present invention and exhibit the same operational effects belong to the technical scope of the present invention. For example, the types of objects to be cleaned are examples, and the number of cleaning tanks 3 is arbitrary.

  In particular, since a large amount of deburring and cleaning of small parts and the like can be performed very efficiently by ultrasonic cleaning, widespread use in the field of deburring and cleaning in particular is expected.

DESCRIPTION OF SYMBOLS 1 ... Ultrasonic cleaning apparatus, 3 ... Ultrasonic cleaning tank, 4 ... Conveying mechanism, 5 ... Container holding raising / lowering member, 6 ... Elevating drive source, 8 ... Storage container, 10 ... Conveying frame, 11 ... Conveying driving source, 12 ... Pressing member, 13 ... Intrusion drive source, 15r ... Rail part, 16 ... Slide part, T ... Input part.

Claims (4)

A plurality of cleaning tanks arranged on a straight line at predetermined pitch intervals, a transport mechanism for transporting an object to be cleaned along a linear direction connecting these cleaning tanks, and a plurality of containers arranged above each cleaning tank Each holding tank is provided with a holding elevating member and an elevating mechanism for elevating and lowering the container holding elevating member, and conveys the object to be cleaned at a predetermined pitch interval from the upstream cleaning tank to the downstream cleaning tank. Is an ultrasonic cleaning method for an object to be cleaned, which is successively cleaned up to the most downstream cleaning tank, and after the object to be cleaned is stored in the storage container, The first step of feeding into the transport mechanism at the most upstream input section of the path, and pushing the loaded storage container by the pressing member of the transport mechanism, it advances a predetermined pitch toward the downstream side of the transport path, The slide part is the rail for the container holding lifting member A second step of transferring the container to the downstream container holding elevating member by engaging with the container, and ultrasonic cleaning of the object to be cleaned in the cleaning tank by lowering the container holding elevating member by a predetermined stroke by the elevating mechanism. A third step, a fourth step in which the conveyance mechanism is moved back by a predetermined pitch and returned to the original position while ultrasonically cleaning the object to be cleaned, and a container for storing the object to be cleaned is predetermined. A fifth step of increasing the stroke, and a sixth step of moving the container forward by a predetermined pitch toward the downstream washing tank by the pressing member of the transport mechanism, and returning to the most upstream charging portion in the fourth step. At the same time when a container for storing a new object to be cleaned is put into the transport mechanism, at the same time when the container is moved forward by the transport mechanism in the second step, the container held by the container holding elevating member at each location is stored. The container is moved forward by a predetermined pitch with each pressing member, and the procedure after the third step is repeated until each object to be cleaned is processed in the most downstream cleaning tank. Ultrasonic cleaning method for objects. 2. The ultrasonic cleaning method for an object to be cleaned according to claim 1, wherein the pressing member of the transport mechanism can be moved into and out of the transport path by a retracting mechanism. A plurality of cleaning tanks arranged on a straight line at a predetermined pitch interval, a transport mechanism for transporting an object to be cleaned along a linear direction connecting these cleaning tanks, and an elevating mechanism provided above each cleaning tank. An ultrasonic cleaning apparatus comprising a plurality of container holding elevating members that can be moved up and down, and a storage container that can be put into the transfer mechanism from the upstream side of the transfer mechanism and can store an object to be cleaned, the transfer mechanism comprising: It is provided with a plurality of pressing members that can push out the plurality of storage containers held by the plurality of container holding elevating members toward the downstream side at a predetermined pitch interval, and these pressing members are projected and retracted inside and outside the conveyance path by a retracting mechanism. An ultrasonic cleaning device characterized by being made free. A rail portion extending in the horizontal direction is formed at the lower end portion of the container holding elevating member, and a slide portion engageable with the rail portion of the container holding elevating member is formed at the upper end portion of the receiving container. The ultrasonic cleaning apparatus according to claim 3.

Images