JP3069523B2 - Pallet handling device with washing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet handling device with a cleaning device provided with a cleaning room for cleaning a workpiece adjacent to a delivery device.

[0002]

2. Description of the Related Art Conventionally, Fs mainly using a machining center are used.
In MC, the pallet pool also serves as a transport and stocker function, and the selection of flexibility on the pallet pool and the continuous NC processing by the workpiece automatically supplied from the pallet pool via the automatic pallet changer are performed. It is a facility that has become possible and has improved productivity.
Machining centers are machine tools that are mainly NC-controlled for machining workpieces having a square shape or the like. Machining proceeds according to programmed procedures, but there are various problems in the operation of changing workpieces. Was left. In order to solve the above-mentioned problems, pallet loading / unloading apparatuses for supplying pallets to a machining center in a replaceable manner have been developed. Such a pallet loading / unloading device is disclosed, for example, in JP-B-63-17577 and JP-B-6-169.
No. 77, Japanese Unexamined Patent Publication No. 7-276181, Japanese Utility Model Laid-Open No. 5
Japanese Patent Application Laid-Open No. 63-74242.

The pallet magazine disclosed in Japanese Patent Publication No. 63-17577 has a pallet storage shelf formed in a multi-stage structure in the vertical direction and arranged in a ring shape, and can freely move up and down and pivot around the vertical axis at its center. Turning lifter,
Pallet gripping means attached to the swivel lifter is provided, a plurality of pallet storage cells are formed in a cylindrical space, and pallet storage shelves are provided with a desired number of transfer ports for transferring pallets with a pallet changer or the like arranged on the outer periphery thereof. It is provided.

A pallet loading / unloading device disclosed in Japanese Patent Publication No. 6-16977 discloses a pallet rack having a pallet table on which a plurality of pallets are placed three-dimensionally, and a waiting station for waiting the pallets outside the machine. Are concentrically arranged, a pivotable and vertically movable table is provided at the center position of the pallet shelf and the waiting station, and a guide rail for guiding the fork on the table so as to be able to advance and retreat in a horizontal direction orthogonal to the center line of the rotation. A pallet support at one end of a fork guided by a guide rail, a drive device for pivoting and raising and lowering the table, and a fork for transferring a pallet between a waiting station and a pallet table. A fork shift device is provided to move the pallet on the waiting station and the pallet on the machine table. Therefore those having a pallet exchange device for exchanging simultaneously.

The work handling apparatus disclosed in Japanese Patent Application Laid-Open No. 7-276181 is capable of cleaning a processed work on a storage shelf covered with a wall or the like. A machine tool that processes the workpiece, a workpiece transfer device that transfers the workpiece between the storage shelf and the machine tool, and a wall that covers a part of the storage shelf among the storage shelves, and is provided on the wall. A shutter for opening and closing the opening; a cleaning liquid discharge nozzle provided inside the wall body; a work transfer device including a work mounting device and a lifting / lowering device; a work mounting device including a tray having discharge means; The discharging means operates when the mounting device is lowered to the lowest stage.

A pallet handling apparatus disclosed in Japanese Utility Model Laid-Open No. 5-63742 supplies an unprocessed work set on a pallet stored in a storage shelf to a machine tool, and converts the processed work from the machine tool. A storage shelf arranged in an arc shape for storing a work set on a pallet, a delivery device that swings along the storage shelf and transfers the work, and a storage device that faces the delivery device. And a delivery device having a lifting table on which a plurality of works can be mounted, and a lifting table drive device having a plurality of electric motors for raising and lowering the lifting table.

[0007]

However, the pallet magazine disclosed in Japanese Patent Publication No. 63-17577 mentioned above requires a separate pallet changer between the pallet magazine for storing pallets and the machining center. Therefore, the pallet changer must be 180
It is necessary to secure an area for turning operation over °. In the pallet loading and unloading device disclosed in Japanese Patent Publication No. 6-16977, an automatic pallet changing device is provided in which a machining center can simultaneously change a pallet on a machine table and a pallet on a waiting station by turning. I have.

In the pallet magazine and the pallet loading / unloading device as described above, chips or cutting fluid (cutting oil or coolant) generated from the workpiece when machining the workpiece is attached to the workpiece. However, although it is not preferable to carry such a workpiece as it is to a delivery device, a pallet storage shelf, etc., or to transfer it to the next device, etc., it is necessary to remove the chips and cuttings from the workpiece. At present, there is no provision for removing liquid (cutting oil).

Incidentally, there is a pallet size used as one of the specifications of the horizontal machining center. The pallet size is, for example, 300m
Squares of m, 400 mm, 630 mm, and 800 mm are known. The size that the machining center can tolerate has some differences depending on the maximum shape and load of the workpiece. For example, as an example, as a specification display of a machining center, a pallet size of 630 mm and an allowable load of 15
60kg, maximum size of workpiece is φ1100 × height 90
If it is described as 0 mm, there is a pallet exchange turning center axis between the center axis of the waiting station and the center axis of the processing station, and the center axis of both stations is 12 mm.
It is about 80 mm. That is, when the machining center places a workpiece of the maximum size on a pallet and performs machining with the machining center, a gap of only 180 mm occurs between the workpiece being processed and the workpiece in standby.

Further, at the center of the space between the workpiece being processed and the workpiece waiting, a processing chamber in the processing station and a standby chamber in the standby station are formed, so that both chambers are shielded. It is necessary to install a shield plate from the pallet changing device. Here, considering the thickness of the shielding plate, the interval of 180 mm is small, and it is almost impossible to arrange another device for the ultimate work at the interval. Therefore, it is conceivable to increase the interval between the central axis of the standby station and the central axis of the processing station. However, if the interval is increased, the turning radius at the time of pallet replacement becomes large, and the pallet changing device of the machining center inevitably becomes large.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and a pallet and a shielding plate are located at a position where a pallet at a standby station is slightly shifted to a pallet storage shelf. A washing station is formed with a sufficient distance from the washing machine, and the machined work with the chips is washed with a washing liquid such as a cutting fluid, a cutting oil or a coolant fluid by a cleaning device provided in the washing station. The present invention provides a pallet handling device with a cleaning device that removes chips from the workpiece and blows away the workpiece wet with the cleaning liquid with compressed air to clean the workpiece.

According to the present invention, there is provided a delivery device which turns along a plurality of pallet storage shelves provided in an arc shape for accommodating a pallet to which a work is to be mounted, and moves up and down to transfer the work to and from the pallet storage shelves. A processing station for processing the workpiece, a standby station provided adjacent to the processing station, a washing station provided between the standby station and the delivery device, an area between the standby station and the processing station A swivel exchange device having a shield plate that divides into two at the standby station side and the processing station side on which the pallet is mounted, and shifts the pallet between the washing station and the standby station. Apparatus, and the washing station and the waiting station And a cleaning device for moving to a region of at least the cleaning station to form a cleaning chamber and removing at least deposits such as chips attached to the workpiece. The cleaning device is mounted on a vertically movable support base. The present invention relates to a pallet handling device with a cleaning device, comprising a cleaning arm pivotally mounted and a jet nozzle for jetting a cleaning liquid or compressed air provided on the cleaning arm at least to the workpiece.

In the pallet handling device with a washing device, a setup station is provided adjacent to the delivery device.

[0014] The cleaning device has an opening / closing door for blocking a pallet traveling path between the delivery device and the cleaning station, and a top plate for shielding a ceiling of the cleaning room.
Further, the washing room is shielded by at least the opening / closing door, the top plate, and the shielding plate. Further, the cleaning device includes a rotating device for moving the injection nozzle around the workpiece, and a fluid switching device for switching between the cleaning liquid and the compressed air injected from the injection nozzle.

Further, the shift device comprises a slide guide disposed over the washing station and the standby station, a pallet table moving on the slide guide, and an actuator for shifting the pallet table. I have. Alternatively, the shift device is configured using a slide fork provided in the delivery device.

This pallet handling device with a washing device, as described above, uses a part of the waiting station between the delivery device provided opposite the pallet storage shelf and the workpiece waiting station. A washing station capable of forming a workpiece is provided, so that the chips attached to the workpiece processed by the machining center or the like are washed with a washing liquid such as a cutting fluid, a cutting oil, a coolant fluid by a cleaning device that can be attached to and detached from the washing station. The cleaning liquid adhering to the workpiece can be blown off with an air blow to clean the workpiece.
In addition, the cleaning device moves to the area between the cleaning station and the standby station to form a cleaning chamber at least in the cleaning station, and the cleaning chamber is formed in the cleaning station and a part of the standby station. The chamber can be effectively formed in a small space, and the deposits should be removed from the workpiece as much as possible at the source where the deposits such as chips and cutting oil adhere to the workpiece. If the work is sent to a pallet transfer device, the work is stored in a pallet storage shelf, or the work is transported to another location such as the next manufacturing equipment,
No problems are caused by the deposits.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pallet handling device with a washing device according to the present invention will be described below with reference to the drawings. 1 is a schematic explanatory view showing an embodiment of a pallet handling apparatus with a washing device according to the present invention, FIG. 2 is a schematic explanatory view of a pallet handling apparatus along line AA in FIG. 1, and FIG. 3 is a pallet handling apparatus in FIG. FIG. 4 is a schematic explanatory view showing an embodiment of a cleaning device incorporated in the apparatus, FIG. 4 is a plan view of the cleaning device of FIG. 3, FIG. 5 is a perspective view and FIG. FIG. 6 is a schematic explanatory view illustrating a cleaning device of the pallet handling device of FIG.

A pallet handling device with a washing device according to the present invention is provided with a plurality of pallet storage shelves 20 arranged in an arc shape for accommodating a pallet 7 on which a workpiece 45 is mounted. A delivery device 3 for delivering and receiving a workpiece 45 to and from the storage shelf 20; a processing station 12 for processing the workpiece 45; a standby station 11 provided adjacent to the processing station 12; Washing station 10 and standby station 1 provided between
A turning exchange device 6 (here, a turntable), which is provided with a shield plate 9 which is turned in the area of the work station 1 and the processing station 12 and is divided into a standby station 11 side on which the pallet 7 is mounted and a processing station 12 side; A shift device 60 for shifting the pallet 7 between the washing station 10 and the waiting station 11, and moving to the area between the washing station 10 and the waiting station 11 to form at least the washing chamber 4 in the washing station 10 and at least the workpiece A cleaning device 30 is provided for removing extraneous matter, such as cutting chips, attached to 45. The cleaning device 30 includes a cleaning arm 2 pivotally mounted on a vertically movable support base 35.
8 and a spray nozzle 3 provided on the cleaning arm 28 for spraying a cleaning liquid or compressed air to at least the workpiece 45.
Eight. Further, the pallet handling device with the washing device includes a setup station 8 adjacent to the delivery device 3.
Is provided. Although the pallet storage shelf 20 and the delivery device 3 are shown in FIG. 2, for example, various types known in the art can be used.

In this embodiment, a machining center 17 which can exchange various kinds of cutting tools 16 is installed facing the machining station 12. Delivery device 3
The cleaning station 10, the standby station 11, and the processing station 12, which are formed between the machining center 17 and the machining center 17, are shielded by a pair of coolant covers 50 installed on both sides thereof. The turning change device 6 arranged in the area inside the coolant cover 50 turns around the rotation shaft 51 and transfers the pallet 7 to one of the standby station 11 and the processing station 12 (the pallet changing device ( Construct 6).
The turning exchange device 6 is divided into two parts by a shielding plate 9, and the shielding plate 9 is divided into a standby station 11 side and a processing station 12.
Shield the area with the side. The coolant cover 50 is provided with a flexible seal member 49 made of oil-resistant synthetic rubber or the like, and is configured such that the turning plate 6 stops the shielding plate 9 at a predetermined position and becomes substantially sealed. Have been. In addition, a pair of columns 14 are provided in a front opening 52 that forms a traveling path of the pallet table 41 that communicates the delivery device 3 and the washing station 10. The opening / closing door 15 is moved up and down along the column 14, and the front opening 52
Is configured to open and close.

The pallet storage shelf 20 includes a support frame 53.
, And are arranged in a plurality of arcs around the delivery device 3. A standby table 57 that constitutes the setup station 8 is provided adjacent to the pallet storage shelf 20 so as to face the turntable 1. The pallet storage shelf 20 stores the pallet 7 on which the workpiece 45 is placed.
The maximum range of the workpiece 45 on which the pallet 7 can be mounted is 1
3 is indicated. Further, a part of the standby station 11 is configured to be used also as a part of the cleaning station 10, and a cleaning chamber 4 is formed in the cleaning station 10 and a part of the standby station 11. The processing station 12 has a processing chamber 5 in which a workpiece 45 is processed by the machining center 17.

The transfer device 3 is composed of a rotary table 1 that is driven to rotate, a pallet table 2 that is mounted on the rotary table 1, and a slide guide 18 that is mounted on the pallet table 2. The slide fork 19 includes a sliding fork 19 that slides and a mechanism (not shown) that extends and contracts the slide fork 19 from the slide guide 18. Further, in this embodiment, as shown in FIG.
A shift device 60 for slightly shifting the pallet 7 is provided between the transfer station 3 and the standby station 11.

The shift device 60 includes a slide guide 61,
Pallet table 4 that can slide on slide guide 61
1 and an actuator 39 (FIG. 2) composed of a cylinder device fixed to a base 62 for sliding the pallet table 41 on a slide guide 61. The pallet table 41 is engaged with the locking portion of the pallet 7 placed thereon, and the pallet 7 is
Is provided with a locking projection 43. The pallet table 41 is provided at both ends of the slide guide 61.
Is provided. The pallet table 41 is provided with a cylinder connector 44 for fixing the rod 63 of the cylinder device of the actuator 39. Therefore, the pallet table 41 can reciprocate between the cleaning station 10 and the standby station 11 by the operation of the actuator 39.

In this pallet handling device with a washing device,
The delivery of the pallet 7 between the delivery device 3 and the shift device 60 can be performed, for example, as follows. To transfer the pallet 7 from the delivery device 3 to the shift device 60, the pallet lift 2 of the delivery device 3 is operated to position the slide fork 19 higher than the slide guide 61, and the slide fork 19 on which the pallet 7 is mounted is moved to the slide guide. The pallet 7 is extended from the pallet 18 and moved to a predetermined position above the slide guide 61 to be stopped. The pallet 7 is placed on the pallet table 41 on the slide guide 61 by lowering the pallet lift 2, and the locking holes of the pallet 7 are locked to the locking projections 43 on the pallet table 41. Let go. Next, the delivery device 3 is operated to retract the slide fork 19 to the position shown in FIG. On the other hand, the actuator 3 of the shift device 60
9 operates to move the pallet table 41 on which the pallets 7 are mounted to the standby station 11 along the slide guide 61, and the pallet table 41 waits there.

Next, the work 45 installed on the pallet 7 waiting at the standby station 11 by the operation of the swing exchange device 6 is combined with the work 45 processed by the machining center 17 by the operation of the swing exchange device 6. Exchanged,
The processed workpiece 45 is placed on the pallet table 41.
Then, the actuator 39 of the shift device 60 is operated to move the pallet table 41 located at the standby station 11 to the cleaning station 10, and the processed work 4
5 stops at the washing station 10 for washing. Although the cleaning operation for the workpiece 45 will be described later, when the cleaning for the workpiece 45 is completed, the delivery device 3 is operated, the slide fork 19 extends below the pallet 7 and stops, and then the pallet lift 2 is moved. Ascends and lifts the pallet 7 placed on the slide fork 19,
The pallet 7 is disengaged from the locking projection 43 of the pallet table 41, and the slide fork 19 is retracted into the slide guide 18, and the processed and washed workpiece 45 is collected in the delivery device 3.

Next, the cleaning device 30 will be described with reference to FIGS. 3, 4, and 6. When the cleaning device 30 does not perform the cleaning operation, the cleaning device 30 is wound up along the column 14 above the cleaning station 10 by the vertical movement actuator 33 and stands by, but is attached to the pallet 7 placed on the pallet table 41. In the cleaning operation for cleaning the workpiece 45, the workpiece 45 is lowered by the vertical movement actuator 33 to the cleaning station 10 along the column 14. The cleaning device 30 includes a support base 35 that moves up and down along the column 14 via a chain or a wire rope 54 by the operation of the vertical movement actuator 33,
Cleaning arm 2 pivotally attached to support base 35
8. It has a turning actuator 34 for turning the cleaning arm 28 attached to the support base 35. The support base 35 is provided with an opening / closing door 15 for closing the front opening 52 of the pallet traveling path between the transfer device 3 and the washing station 10 and a top plate 37 for closing the ceiling of the washing room 4. ing.

The cleaning arm 28 is formed of a pipe through which a coolant liquid or compressed air can flow. A pulley 32 and a rotary joint 31 are attached to a pipe 55 that constitutes a pivot of the cleaning arm 28. The cleaning arm 28 is turned by the rotation of the pulley 32 via the belt 29 by the operation of the turning actuator 34. Further, a fluid supply flexible tube 40 is connected to the rotary joint 31, and the fluid supply flexible tube 40 is connected to the fluid supply pipe 27. The fluid supply pipe 27 is provided with the switching valves 25 and 2
The cleaning fluid switching device 21 is connected to a coolant tank 22 and a compressed air source 23. The cleaning arm 28 includes a pipe 56 extending in the radial direction and a pipe 57 extending downward. In the pipe section 56,
An extendable pipe 36 whose length can be changed is incorporated. The cock 4 is spaced apart from the pipe 57 in the height direction.
6 are provided.

In FIG. 3, the washing center in the washing station 10 is indicated by reference symbol E, the standby center in the standby station 11 is indicated by reference symbol F, the turning center of the swivel exchange device 6 is indicated by reference symbol G, and The processing center in the processing station 12 is indicated by the symbol H. A pallet table moving actuator 39 attached to the slide fork 19 is connected to a cylinder connector 44 provided on the pallet table 41. The pallet table 41 can be moved between the washing station 10 and the standby station 11 by the operation of the pallet table moving actuator 39. When the opening / closing door 15 and the top plate 37 are lowered by the operation of the vertical movement actuator 33, the cleaning station 10 is closed by the opening / closing door 15, the top plate 37, the shielding plate 9 and the coolant cover 50. Is configured. The cleaning device 30 includes a workpiece 45.
An injection nozzle 38 for injecting a coolant or compressed air to the nozzle, a rotating device for moving the injection nozzle 38 around the workpiece 45, and a switching device for switching between the coolant and the compressed air injected from the injection nozzle 38 2
One.

The operation of the cleaning apparatus 30 will be described with reference to FIGS. Cleaning fluid switching device 21
Can be switched to either coolant liquid or compressed air to be supplied to the cleaning chamber 4 by switching the on-off valves 25 and 26. In addition, cocks 46 are provided on the injection nozzles 38 provided on the cleaning arm 28, respectively.
The hanging length of the cleaning arm 28 is designed to be the maximum height of the workpiece 45 allowed by the machining center, and the spray nozzle 38 is provided in the hanging part. At this time, the cock 46 of the injection nozzle 38 that does not need to inject the coolant or the compressed air is closed, and the coolant or the compressed air is only injected from the injection nozzle 38 that needs to inject the coolant or the compressed air. What is necessary is just to inject air.

First, the vertical actuator 33 of the cleaning device 30 is actuated, the cleaning device 30 is guided by the column 14 and descends into the cleaning chamber 4, and the top plate 37 and the opening / closing door 15 descend. 4, the ceiling opening is closed by the top plate 37, the washing chamber 4 is substantially closed, and the vertical actuator 33 stops. The actuator 34 is driven to rotate the pulley 32 through the drive belt 29, and the cleaning arm 28 of the cleaning device 30 starts turning around the workpiece 45 installed on the pallet 7. In this case, if the turning angle of the cleaning arm 28 is set appropriately, the cleaning arm 28 can perform normal and reverse rotation within the range of the angle. The switching valve 25 is opened and the switching valve 26 is closed, and at the same time, the pump 24 is driven, the coolant liquid of the cleaning liquid is sent out from the coolant liquid tank 22 through the pipe 27, and the coolant liquid is supplied to the flexible pipe 40 and the rotary joint 3.
1 through the cleaning arm 28. Next, the coolant is ejected from the injection nozzle 38 provided on the cleaning arm 28, the work 45 and the like are washed with the coolant, and the chips attached to the work 45 and the like are removed.

Next, in the cleaning device 30, after the preset cleaning time has elapsed, the switching valve 25 is closed and the switching valve 26 is opened, the driving of the pump 24 is stopped, and the delivery of the coolant is stopped. . When the switching valve 26 opens,
The compressed air from the compressed air source 23 is supplied to the pipe 27 and the flexible pipe 4.
0, the workpiece 45 which is ejected from the injection nozzle 38 through the rotary joint 31 and the cleaning arm 28 and is wet with the coolant liquid.
Are dried by air blow. After the elapse of the preset drying time, the switching valve 26 is closed and the ejection of the compressed air is stopped. Next, the actuator 34 is stopped, the rotation of the pulley 32 is stopped, and the cleaning arm 2 is stopped.
8 stops. Again, the vertical actuator 33 of the cleaning device 30 is actuated, the cleaning device 30 is guided by the support 14 and rises from the cleaning room 4, and the opening / closing door 15 and the top plate 37 rise to raise the ceiling opening and the front surface of the cleaning room 4. Opening 52
Opens.

Next, the operation of the pallet handling device with a washing device will be described with reference to FIGS. 1, 2 and 7 to 12. 7 to 12, workpieces 45 set on the pallet 7 are indicated by reference numerals A, B, C and D.
When the workpiece 45 is taken out of the pallet storage shelf 20, reference numerals A, B, C and D are shown in parentheses. In this pallet handling device with a washing device, the pallet 7
The workpieces A to D are all set above, and the workpieces A to D move together with the pallet 7. The setting of the workpieces A to D on the pallet 7 may be performed by directly attaching the workpieces A to D to the pallet 7 or by using a jig or the like.

As shown in FIG. 7, when the workpiece A is being machined by the cutting tool 16 of the machining center 17, the slide fork 19 of the delivery device 3 for the pallet 7 transfers the workpiece B to be machined next from the delivery device 3. Washing station 1
It is transferred to the pallet table 41 located at 0. When the workpiece B is supplied to the pallet table 41 of the washing station 10, the slide fork 19 of the transfer device 3 retreats toward the transfer device 3 and stops. On the other hand, the pallet 7 on which the workpiece C to be processed third is set is moved from the pallet storage shelf 20 to one end 47 of the delivery device 3 by the slide fork 19 by the operation of the delivery device 3. Next, as shown in FIG. 8, while the work A is being processed, the pallet table 41 located at the cleaning station 10 is cleaned by the operation of the shift device 60 with the work B mounted. It moves from the station 10 to the standby station 11.

Next, as shown in FIG.
After the work B has completed the movement to the standby station 11 by the operation of, the swivel changing device 6 constituting the pallet changing device provided in the machining center 17 is operated, and the processed work A and the next processed material are processed. Workpiece B is exchanged at the same time. The operation of the turning exchange device 6 is completed, for example, by lifting up only the pallet 7, turning the turning exchange device 180 around the turning center by 180 °, and then lifting down. The workpiece B is fixed to the processing station 12, and the workpiece A is located at the standby station 11 and is mounted on the pallet table 41.

As shown in FIG. 10, the machining of the workpiece B is started. During the machining of the workpiece B, the pallet 7 on which the workpiece A is set is moved from the standby station 11 by the operation of the shift device 60. The work A is shifted to the washing station 10 where the workpiece A is washed. That is, the pallet table 41 located at the standby station 11 moves the pallet 7 on which the workpiece A is mounted to the cleaning station 10 by operating the shift device 60, and the center of the pallet 7 is aligned with the rotation center axis of the cleaning arm 28. When they match, the movement of the pallet 7 on which the workpiece A is mounted stops. Therefore, in order to perform the above-described cleaning process of the workpiece, the cleaning device 30 is lowered and stopped at a predetermined position, and at the same time, the opening / closing door 15 closes the front opening 52 and the top plate 37 closes the ceiling opening. When the cleaning station 10 is closed and the cleaning station 10 is substantially closed, the cleaning chamber 4 is formed. The cleaning arm 28 starts to rotate around the workpiece A, and the cleaning arm 2
The coolant liquid is sprayed from the spray nozzle 38 provided in 8, and the chips attached to the workpiece A are washed away with the coolant liquid. When the chips are washed away from the workpiece A, the coolant is stopped, and compressed air is blown out from the spray nozzle 38. Then, the coolant adhering to the workpiece A is blown off by air blow, and the workpiece A is dried. Then, the rotation of the cleaning arm 28 is stopped, and then the cleaning arm 28 is raised, and the front opening / closing door 15 and the top plate 37 are raised, so that the front opening is opened and the ceiling opening is opened.

As shown in FIG. 11, the workpiece B is continuously processed by the cutting tool 16 of the machining center 17, while the workpiece A undergoes the following processing. For the workpiece A after the cleaning and the air blow, the delivery device 3 is operated, and the processed workpiece A is taken from the cleaning station 10 to the delivery device 3 by the slide fork 19. The delivery device 3 that has picked up the workpiece A rotates and exchanges the positions of the workpiece A and the third workpiece C, and then operates the slide fork 19 to move the workpiece C.
Is set on the pallet table 41 of the shift device 60 located in the washing station 11. Next, the pallet lifting table 2 and the rotating table 1 of the transfer device 3 are operated to raise the pallet 7 on which the workpiece A is set, and rotate to a predetermined position.
9 is operated to store the pallet 7 on which the work A is set in the pallet storage shelf 20 which has been scheduled in advance.

As shown in FIG. 12, the workpiece B is continuously processed by the cutting tool 16 of the machining center 17 while the slide fork 19 of the transfer device 3 is being processed.
Sends the workpiece C to be processed next to the pallet table 41 located at the washing station 10. After the workpiece C is sent to the pallet table 41 of the washing station 10,
The slide fork 19 of the pallet handling device retreats and stops facing the washing station 10. Next, the transfer device 3 operates the pallet lifting table 2, the rotating table 1, and the slide fork 19, and the workpiece D to be machined fourth.
Is set from the pallet storage shelf 20 and placed on the end 47 of the delivery device 3. On the other hand, the pallet 7 on which the workpiece C sent to the pallet table 41 of the washing station 10 is set is moved from the washing station 10 to the standby station 11 by the operation of the shift device 60.
Will be shifted to

This pallet handling device is not mechanically connected to the machining center 17 and can operate independently. However, when the turning exchange device 6 of the pallet exchange device of the machining center 17 is operating,
When the pallet 7 is located at the washing station 10 or the standby station 11, it is impossible to operate the washing station 10 while holding the pallet 7. Further, when the opening / closing door 15 of the machining center 17 is in operation and is closed, it cannot be operated regardless of whether or not the pallet 7 is held.

One embodiment of the operation of the pallet handling device with a washing device has been described with reference to FIGS. 6 to 11, but is not limited to the above operation. In the above embodiment, the shift device 60 shifts the pallet 7 between the cleaning station 10 and the standby station 11 by using
A slide guide 61 disposed between the washing station 10 and the standby station 11;
The pallet table 41 is moved upward and the actuator 39 is used to shift the pallet table 41.
The mechanism is not limited. For example, the shift device does not include the actuator 39, but uses the slide guide 61 and the pallet table 41 to provide the slide fork 19 of the transfer device 3 with the function of an actuator, thereby changing the pallet 7 to the washing station 10 and the standby station. It is also possible to configure so as to shift between S.11 and S.11. Alternatively, the shift device includes a slide guide 61,
The pallet 7 may be shifted between the washing station 10 and the standby station 11 using the slide fork 19 without the pallet table 41 and the actuator 39.

As another embodiment, when the workpiece 45 is machined, the workpiece 45 from which the cutting fluid has been washed away by the cutting fluid being used is washed at the cleaning station 10. On the other hand, the cleaning process (drying process) using only the air blow can be performed without using the cleaning liquid. Further, depending on the shape and size of the workpiece 45, the cleaning arm 28 used in the cleaning device 30 does not necessarily need to rotate over the entire circumference of the workpiece 45, and may be partially rotated.
By providing a limit switch or the like for limiting the turning operation range of the washing arm 28 and adjusting the installation position of the limit switch, the washing operation can be performed by performing forward / reverse turning in a desired area.

Further, as another embodiment, if all cleaning processing and air blowing processing for the workpiece 45 are not completed within the processing time during which the workpiece 45 is being processed, the processing in the cleaning station is performed by cleaning the coolant liquid. For example, using the work handling apparatus disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-276181, a part of the storage shelves is configured as an air blow cleaning station, and the work 45 is cleaned. It can be performed. Further, as described with reference to FIGS.
5 is not limited to being stored in the pallet storage shelf 20. For example, when the next process requires the processed workpiece 45 immediately, the processed station 45 is not stored in the pallet storage shelf 20 and the setup station 8 is not required.
It can also be switched to transfer to.

[0041]

Since the pallet handling device with a washing device according to the present invention is constructed as described above, the space between the transfer device and the waiting station is used, and a part of the conventional waiting station is replaced with the washing station. The cleaning station can be configured as a part of the swivel exchange device. In addition, by dividing the swivel exchange device into two parts by the shielding plate, the two-part space on the swirl exchange device can be set between the standby station and the processing station. After turning, the chips attached to the machined workpiece are removed by washing with a washing liquid such as cutting fluid (cooling oil) and coolant by a washing device provided at the washing station, and are wet with the washing liquid. The workpiece can be cleaned by blowing it off with compressed air. Therefore, in this pallet handling device with a washing device, a washing station is configured by effectively utilizing the space between the delivery device and the conventional pallet changing device, and the washing device is provided in the washing station so as to be able to come and go. In particular, chips can be immediately removed at the source and cleaned to clean workpieces, and the entire system can be made compact. The processed workpieces can be cleaned and cleaned, preventing corrosion of the workpiece. As well as the workpiece can be used immediately in the next step.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing one embodiment of a pallet handling device with a cleaning device according to the present invention.

FIG. 2 is a schematic explanatory view of the pallet handling device taken along line AA in FIG.

FIG. 3 is a schematic explanatory view showing one embodiment of a cleaning device incorporated in the pallet handling device of FIG. 1;

FIG. 4 is a plan view of the cleaning device of FIG. 3;

FIG. 5 is a perspective view showing one embodiment of a shift device of the pallet handling device of FIG. 1;

FIG. 6 is a schematic explanatory view illustrating a cleaning device of the pallet handling device of FIG. 1;

FIG. 7 is an explanatory diagram illustrating a first step of an operation flow of the pallet handling device with a washing device in FIG. 1;

FIG. 8 is an explanatory diagram illustrating a second step of the operation flow of the pallet handling device with a washing device in FIG. 1;

FIG. 9 is an explanatory diagram illustrating a third step of the operation flow of the pallet handling device with a washing device of FIG. 1;

FIG. 10 is an explanatory diagram illustrating a fourth step of the operation flow of the pallet handling device with a washing device of FIG. 1;

FIG. 11 is an explanatory diagram illustrating a fifth step of the operation flow of the pallet handling device with a washing device of FIG. 1;

FIG. 12 is an explanatory diagram illustrating a sixth step of the operation flow of the pallet handling device with a washing device in FIG. 1;

[Explanation of symbols]

 Reference Signs List 3 Pallet transfer device 4 Washing room 6 Swivel exchange device 7 Pallet 8 Setup station 9 Shield plate 10 Washing station 11 Standby station 12 Processing station 15 Opening door 20 Pallet storage shelf 21 Fluid switching device 25, 26 Switching valve 28 Cleaning arm 30 Cleaning device 35 Support table 37 Top plate 38 Injection nozzle 39 Actuator 41 Pallet table 45, A, B, C, D Workpiece 60 Shift device 61 Slide guide

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B23Q 7/00

Claims (6)

(57) [Claims] 1. A transfer apparatus for transferring the workpiece between said pallet shelf by lifting with pivots along a plurality the installed pallet shelf in an arc shape to accommodate the pallet mounting the workpiece, the Processing of workpieces
Processing station, provided adjacent to the processing station
Waiting station, said waiting station and said delivery
Cleaning station provided between the cleaning device and the standby
In the area between the station and the processing station
And the waiting station for loading the pallet
A shielding plate that divides into two
A turning change device, a shift device for shifting the pallet between the washing station and the waiting station , and a washing station and the waiting station.
To the area with the cleaning station
Form a cleaning chamber and attach to at least the workpiece
Equipped with a cleaning device for removing adhered substances such as
The cleaning device is pivotally mounted on a vertically movable support base.
Cleaning arm and a cleaning liquid provided on the cleaning arm or
Injection for injecting compressed air to at least the workpiece
A pallet handling device with a washing device comprising a nozzle . 2. The pallet handling device with a washing device according to claim 1, further comprising a setup station provided adjacent to the delivery device. 3. The cleaning device has an opening / closing door for blocking a pallet traveling path between the delivery device and the cleaning station, and a top plate for shielding a ceiling of the cleaning room, and the cleaning room is at least the cleaning room. door, washing device with the pallet handling apparatus according to claim 1 or 2 comprising from being blocked by the top plate and the shielding plate. Wherein said cleaning device, rotating device for moving the front Symbol injection nozzle around said workpiece, and a fluid switching device for switching to either of the cleaning solution and the compressed air is injected from the injection nozzle The pallet handling device with a washing device according to any one of claims 1 to 3, comprising : Wherein said shifting device, the washing station and the parking station and the disposed astride the slide guide, is composed of an actuator for shifting the pallet base and the pallet table for moving the slide guides on The pallet handling device with a washing device according to any one of claims 1 to 4, comprising : 6. The method according to claim 6, wherein the shift device is configured using a slide fork provided in the delivery device .
The pallet handling device with a washing device according to any one of claims 1 to 4, further comprising a cleaning device.