JP3276474B2 - Laser processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser processing apparatus for performing automatic processing for a long time.

[0002]

2. Description of the Related Art Generally, in a laser processing apparatus, a plate material which is a material work is placed on a table of a laser processing machine, a predetermined cutting line is formed by a laser beam, and the product is processed. I have. At this time, an uncut portion called a microjoint is provided in a part of the cutting line to leave the product on the material plate, and the product is separated from the plate material in a post-process after the plate material is dropped from the table of the processing machine. By this processing, the product can be easily collected without being scattered on the table of the processing machine. In order to automatically process many materials by unmanned operation, a system is conceivable in which a large number of works are prepared and each work is sequentially sent to a table of a processing machine. In this case, a means for accurately attaching the work to a predetermined position on the table is required.

The present applicant has proposed a laser processing apparatus having two tables as disclosed in Japanese Patent Application Laid-Open No. 63-16895. In this processing apparatus, while the work on one table is being automatically processed, the work on the other table can be replaced. Further, the laser processing apparatus disclosed in Japanese Patent Application Laid-Open No. 5-92291 prepares a large number of pallets on which a work is placed on a stacker and sends the pallets to a table of a processing machine via each pallet intermediate station. Automatic processing.

[0004]

In an apparatus for preparing a work on a pallet for each work piece, the pallet itself is exchanged, so that the work is completely cut without leaving a microjoint on the work. This eliminates the need for post-processing for separating the work from the plate material, thereby improving production efficiency. However, in an apparatus as disclosed in Japanese Patent Application Laid-Open No. 5-92291, a three-dimensional pallet stocker is provided, and is put in and out of a table of a processing machine via an intermediate transfer station. Not only does the transport distance of the pallet become long, but also the work of the pallet is attached and detached, so that there is a problem that the time for setup change is long. SUMMARY OF THE INVENTION The present invention solves the above-described problems and provides a highly productive laser processing apparatus with a compact configuration.

[0005]

The laser processing apparatus of the present invention has a laser processing machine, a pallet on which a work for laser processing is mounted and which is detachably mounted on a table of the laser processing machine as a basic configuration. A first pallet stocker disposed on one side of the laser beam machine and containing a plurality of pallets, and a second pallet stocker disposed on the other side of the laser beam machine and containing a plurality of pallets And a pallet transfer device for transferring the pallets between the first and second pallet stockers and the table of the laser beam machine.

The pallet stocker has a roller that forms the lowermost shelf and supports the pallet, and a roller that forms the uppermost shelf and supports the pallet and has a roller that rotates to the retreat position when the pallet is raised. A second pallet accommodating portion, a roller forming a lowermost shelf to support the pallet, and a roller forming the uppermost shelf to support the pallet and rotating to the retreat position when the pallet is lowered Pallet storage section.

The pallet transport device includes a first pallet stocker, a table of a laser processing machine, and a garter disposed above the second pallet stocker. The pallet is moved by being guided by the garter. And a second gantry guided and moved by the first gantry and having a second pallet lifter.

[0008]

[Function] A pallet stocker is provided on both sides of the laser processing machine, and two pallet lifters are operated simultaneously to carry a pallet on which material work is loaded from one pallet stocker to the table of the processing machine and place the processed work. The empty pallets can be returned from the second pallet stocker to the first pallet stocker while the pallets that have been taken out can be carried out to the other pallet stocker, thereby reducing idle time and improving production efficiency.
Since the pallet stocker accommodates a large number of pallets in a compact configuration, it is possible to achieve automatic machining by unmanned operation for a long time. Then, replenishment of the material to the first pallet stocker and unloading of the processed work from the second pallet stocker can be performed at the same time.

[0009]

FIG. 1 is an explanatory view showing an outline of a laser processing apparatus according to the present invention. The laser processing apparatus generally denoted by reference numeral 1 is:
A laser processing machine 10, a first pallet stocker 20A serving as a loading station disposed on both sides of the laser processing machine 10, a second pallet stocker 20B serving as an unloading station, and first and second pallets. A pallet transport device 60 that transports the pallet 40 between the stockers 20A, 20B and the laser beam machine 10,
A system controller 80 that controls the entire laser processing apparatus 1 is provided.

The laser beam machine 10 includes a column 130 erected on the base 100 and a table 110 movably supported on the base 100. The table 110 moves along the longitudinal direction of the base 100. The coordinate axis is defined as an X axis, the coordinate axis orthogonal to the X axis in a plane parallel to the upper surface of the table 110 is defined as a Y axis, and a plane including the X axis and the Y axis. Assuming that the vertical coordinate axis is the Z axis, the column 130 of the laser beam machine 10
Has a saddle that moves on the Y-axis and a laser processing head attached to the saddle and controlled in the Z-axis direction. The laser processing machine 10 includes a laser oscillator 140 and an NC control panel 1
50, etc.

The first pallet stocker 20A and the second pallet stocker 20B have the same structure.
A box-shaped case 200 is provided, and two-stage pallet storage sections 30A and 30B are formed in the case 200 by a chain. A plurality of shelves are formed in the pallet storage sections 30A and 30B by chains, respectively, and the pallets 40 are stored in the respective shelves so as to be vertically movable (Z-axis direction).
The pallet of the uppermost shelf of the first pallet storage unit 30A is transferred to the uppermost shelf of the second pallet storage unit 30B, and the pallet supported by the lowermost shelf of the second pallet storage unit 30B is Is transferred to the lowermost shelf of the first pallet storage unit 30A.

A pallet transfer device, generally designated by the reference numeral 60, includes a garter 600 extending in the Y-axis direction across the table 110 of the processing machine 10, and a first gantry 610 moving on the garter 600; Gantry 6
10 has a second gantry 650 supported movably in the Y-axis direction. The first gantry 610 is
The pallet 40 having the pallet lifter 70A and holding the material work 50 stored in the uppermost shelf of the first pallet storage portion 30A of the first pallet stocker 20A is held on the table 110 of the laser processing machine. Transfer to
The second gantry 650 has a pallet lifter 70B, and moves the pallet 40 on which the processed work is placed on the table 110 of the laser processing machine from the table 110 to the first pallet storage section 30A of the second pallet stocker 20B. It is transported to an empty shelf provided in the upper stage.

FIG. 1 shows products 511, 512, 513, 5
14 shows a state immediately after the pallet 40 processed from the processing machine is sent from the processing machine. At the start of automatic machining, the first
Material work 5 on all shelves of the pallet stocker 20A
The pallet 40 on which the first pallet 40 is mounted is provided in the second pallet stocker 20B.
Empty pallets 40 are prepared on all the remaining shelves except for the empty shelves at the top. When the pallet 40 on which the processed work is placed is transferred to the second pallet stocker 20B, the pallet stocker 20B drives the chain to transfer the pallet 40 to the uppermost shelf of the second pallet storage unit 30B. I do. In conjunction with this operation, the empty pallet 40 stored in the second shelf from the top of the first pallet storage section 30A rises to the top shelf.

The second gantry 650 grasps the empty pallet 40 and transfers the pallet together with the first gantry 610 to the uppermost empty shelf of the first pallet storage section of the first pallet stocker 20A. return. The first pallet stocker 20A drives the chain to transfer the pallet 40 to the uppermost shelf of the second pallet storage unit 30B. In conjunction with this operation, the second pallet storage section 2
The pallet 40 on which the material work of the second shelf is placed rises to the position of the uppermost shelf.

By repeating the above-described steps, the pallets on which the material workpieces prepared on the first pallet stocker on the loading station side are all sent to the laser beam machine until the machining is completed are completed. Automatic processing can be continued for a long time. Since the pallet stocker constituting the loading station and the unloading station is disposed on the side of the laser beam machine, the gantry can be moved in a short distance and the space can be reduced. In addition, since the empty pallet on the unloading station side is returned to the loading station side during laser processing, material can be continuously supplied, so that idle time is short and productivity is high.

FIG. 2 is an explanatory view showing the outline of the pallet transport device. The transfer device indicated generally by reference numeral 60 has a garter 600 extending in the Y-axis direction, and a first gantry 610 is movably supported by the roller 612 with respect to the garter 600. The first gantry 610 has a motor 616, which drives a pinion 617. The pinion 617 engages with a rack 614 attached to the garter 600. Accordingly, by driving the motor 616, the first gantry 610 moves on the garter 600 along the Y axis. First Gantry 6
10 has a mounting base 700A,
Supports the first pallet lifter 70A. The motor 616 of the first gantry 610 is controlled so that the first pallet lifter 70A moves between the first pallet stocker 20A and above the table 110 of the laser beam machine 10.

The mounting base 70 of the first gantry 610
0A has a beam 620 extending in the Y-axis direction.
An inverted T-shaped guide rail 622 is provided below 20. The second gantry 6 corresponds to the guide rail 622.
50 is movably supported via a roller 652. An air cylinder 660 is attached to the beam 620 of the first gantry 610 so that the second gantry 650 can be connected to the first gantry 610 by the air cylinder 660.
Move on the Y axis. The second gantry 650 is connected to the second pallet lifter 7 via the mounting base 700B.
Support OB.

The first gantry 610 has the first
The second pallet lifter 70B equipped with the second pallet lifter 70A in the second gantry 650 has a common configuration, but the second pallet lifter 70B has a center aligned with the lower part of the first pallet lifter 70A. So that you can move. That is, the second gantry 65 to which the second pallet lifter 70B is attached.
0, the Y-axis distance L ₁ moves. The distance L ₁ corresponds to the distance from the center position of the table 110 of the laser processing machine 10 to the center position of the second pallet stocker 20B is unloading station.

With the above configuration, the first gantry 61
No. 0 takes out the pallet 40 on which the material work is placed from the first pallet stocker 20B, which is a loading station, by using the first pallet lifter 70A, and transports the pallet 40 onto the table 110 of the laser processing machine. The pallet 40 on which the processed work is placed by the second pallet lifter 70B is taken out from the table 110 of the laser beam machine, transported to the second pallet stocker 20B as an unloading station, and the empty pallet 40 is moved to the second pallet stocker 20B. From the pallet stocker 20B to the first pallet stocker 20A.

FIG. 3 is an explanatory view showing an outline of a pallet lifter 70 mounted on the gantry. The pallet lifter 70 has four lifting arms 720 that are pivotally attached to bosses 710 provided on both front and rear sides of the base 700. An air cylinder 730 provided on the side of the base 700 pivots a link 732 connected to the tip of the piston rod. Link 73
The operation of No. 2 is transmitted to a rod 736 disposed before and after the base 700 via a link 734 to swing the rod 736. The rod 736 is connected to the lifting arm 720 via a link 738, and rotates the lifting arm 720 by 90 degrees with respect to the base 700 from a vertical position to a horizontal position.

The lifting arm 720 is mounted on the pallet 4
When it is transported as 0, it moves down to the vertical position, and when not in use, it is stored at the horizontal position. A motor 750 is provided on the side of the base 700.
And the motor shaft is sprocket 75
2 is driven. The sprocket 752 drives a sprocket 756 of a shaft 758 provided before and after the base 700 via a chain 754. The shaft 758 is the boss 7
A bevel gear 760 that penetrates through and protrudes into the lifting arm 720 is driven. The bevel gear 760 meshes with a bevel gear 762 of a ball screw 764 provided on the axis of the lifting arm, and rotates the ball screw 764.

The ball screw 764 is connected to the lifting arm 7
20 is screwed into a nut provided on the guide bush 766 of the hook rod 740 that slides with respect to the hook rod 740.
Move 0 in the axial direction. The hook rod 740 has a groove-shaped hook 742 at its tip. The pallet 40 on which the work is placed has a pin 404 protruding to the side of the frame 400, and is engaged with the hook 742 of the hook rod 740. Ball screws 76 provided on the left and right sides of the base 700
The left and right hook rods 740 are moved up and down in the arrow direction (Z-axis direction in the state of use in the figure) in synchronization with the rotation of the shaft 758 by reversing the lead directions of the nuts screwed into the ball screw 7 and the ball screw 764. I do.

In order to grip the pallet 40 on the table of the pallet stocker or the processing machine, the gantry is moved to position the pallet lifter 70 on the target pallet. Next, the air cylinder 730 is driven to pivot the lifting arm 720 from the horizontal position to the vertical position. Thereby, the hook 742 of the hook rod 740 is engaged with the pin 410 of the pallet 40. The motor 750 is driven to raise the hook rod 740 holding the pallet 40 to a predetermined position. In this state, the gantry is moved to the target position. At the target position, the pallet 40 is placed on the target by lowering the hook rod, and the lifting arm 720 is turned to the horizontal position to complete the transfer of the pallet 40.

FIG. 4 shows a table 110 of the laser beam machine 10.
It is explanatory drawing which shows the outline | summary of a part. The laser beam machine 10 has a guide 105 provided on a base 100,
5, the table 110 is slidably supported. The servomotor 120 drives the ball screw 122, and the table 110 on which the ball nut 124 is mounted is controlled along the X axis. On the table 110, a reference plate 112 and a stopper 114 for positioning the pallet 40 are provided. The reference plate 112 supports the pallet 40 horizontally,
By pressing the side surface of the pallet 40 against the stopper 114, the position between the pallet 40 and the table 110 is determined. A clamp cylinder 115 is provided on the table 110 on the opposite side of the stopper 114, and reliably presses the pallet 40 against the stopper 114.

The pallet 40 has a rectangular frame 400, and inside the frame 400, a steel bar 430 supporting the back surface of the work 50 is provided. Frame 40
A work clamp 420 is provided on the upper surface of the work 50 to hold the edge of the work 50. With this pallet structure, laser processing can be performed while the work 50 is supported on the pallet. The laser beam that has cut the work melts the upper part of the back bar 430, but only partially melts, and does not affect the support function of the work. Melt crossing 43
When the number reaches 0, the bar 430 may be replaced. A hook 402 and a pin 404 are provided on a side surface of the frame 400. A large number of pallets are accommodated in the stocker by supporting the hooks 402 with pins of a chain of the pallet stocker. The pin 404 is gripped by the rod 740 of the pallet lifter.

FIG. 5 is an explanatory view showing an outline of a pallet stocker. A pallet stocker, generally designated by the reference numeral 20, has a first pallet storage section 30A and a second pallet storage section 30B, and each pallet storage section 30A, 30B has a plurality of stages (seven stages in the illustrated embodiment). A shelf is formed. A number of rollers 230 are attached to the bottom of the pallet storage sections 30A and 30B, and form a lowermost shelf. The uppermost shelf is formed by rollers 240 at the top of the pallet storage unit. The roller 240 is attached to an arm that pivots in the horizontal direction, and can retreat when the second-stage pallet moves up.

A plurality of shelves are formed by chains between the uppermost shelf and the lowermost shelf. The chain 220 hung on the upper and lower sprockets 225, 226 has pins 222 provided at equal intervals. This pin 222
Engages with a hook 402 provided on the frame 400 of the pallet 40, holds the pallet 40, and raises and lowers the pallet in the pallet accommodating portion. Therefore,
The pins 222 of the chain 220 form a shelf for supporting the pallet 40 and function as a lifting device for the pallet 40.

A worm screw 212 driven by a motor 210 drives a shaft 215 via a worm wheel 214. The shaft 215 drives the sprocket 225 provided in the first pallet accommodating portion 30A in the direction of the arrow, and drives the chain 220. Shaft 215
Is also transmitted to the other sprocket 225 via the chain 216 to drive the other chain 220. With this driving force, the pins 22 of the two chains 220 are
2 engages a hook 402 on one side of the pallet 40 on the roller 230 forming the lowermost shelf, and
Increase 0. The chain 220 engaged with the lowermost pallet 40 rises by a certain distance and stops. This stop position is the position of the second shelf from the bottom. A similar chain mechanism is provided on the opposite side of the pallet 40.

The shaft 2 driven by the motor 210
The rotation force of No. 15 is transmitted to the shaft 218 on the side of the second pallet accommodating portion 30 </ b> B via the chain 217, and drives the chain 220 via the sprocket 225. Similarly, the driving force of the shaft 218 drives the other chain 220 via the chain 219. The chain 220 mounted on the second pallet storage portion 30B also has pins 222 provided at equal intervals, and the pins 222
To support the pallet 40. The chain 220 includes rollers 24 forming the uppermost shelf.
Receiving the pallets 40 on 0, the pallets 40 are sequentially driven to descend.

When the pallet 40 reaches the lowermost position, the pallet 40 is received by the roller 230, and the pin 222 of the chain 220 is released from the hook 402 of the pallet 40. The roller 240 forming the uppermost shelf pivots in the horizontal direction when the pallet 40 is moved up and down by the chain 220 to avoid interference. The rotation of the roller 240 is achieved by the driving force of the air cylinder. Piston rod 252 of air cylinder 250 attached to pallet stocker frame side
Is transmitted to the linear motion of the link 254 via the shaft 253. Link 254 moves on pallet 4
0 is transmitted to the link 256 provided on the frame side of the pallet stocker on both sides. A link for rotating the arm 242 supporting each roller 240 is connected to the link 256. Therefore, in conjunction with the movement of the link 256, the roller 240 pivots between the operating position shown by the solid line and the retracted position shown by the broken line.

When the roller 240 is turned to the retracted position, the chain 220 on the first pallet storage section 30A raises the pallet 40 numbered 1 to the top of the chain 220. In synchronization with this, the chain 220 on the side of the second pallet accommodating portion 30B lowers the pallet 40 numbered 2 from the uppermost stage to the second stage position. After the end of this operation, the air cylinder 250 is driven to
Return 0 to the use position. By advancing the chain 220 by a small amount, the uppermost pallet of the first pallet accommodating portion 30A is separated from the chain 220 and supported by the rollers 240, and the lowermost pallet is moved by the rollers 230.
To chain support. Similarly, the lowermost pallet of the second pallet accommodating portion 30B is separated from the chain 220 and is supported by the rollers 230.

Next, a mechanism for transferring the pallets on the rollers 230 and 240 between the first and second pallet storage sections 30A and 30B will be described. The sprocket 310 driven by the motor 300 moves the chain 312 in the direction of the arrow. The chain 312 moves on a quadrilateral trajectory by four sprockets. The chain 312 has two
The arm 320 is attached to the arm 320.
Abuts on the hook 420 of the pallet 40.

When the motor 300 is driven, the chain 31
The second arm 320 has the hook 4 of the uppermost pallet 40 placed on the roller 240 of the first pallet storage unit 30A.
02, and pushes the pallet onto the roller 240 of the second pallet storage unit 30B. At the same time, the other arm 320 of the chain 312 contacts the pallet hook on the lowermost roller 230 of the second pallet storage unit 30B, and transfers this pallet to the roller 230 side of the first pallet storage unit 30A. With the above configuration, the pallets can be circulated. Next, processing steps in the present laser processing apparatus will be described.

FIG. 6 shows an outline of the present laser processing apparatus when viewed from the front.
And a second pallet stocker 20B on the other side of the laser beam machine. A pallet 40 on which a work 50 is placed is supplied onto a table 110 of the laser beam machine 10, and necessary laser processing is performed. The first gantry 610 moving on the garter 600 is equipped with a first pallet lifter 70A. The second gantry 650 moving on the first gantry 610 is equipped with a second pallet lifter 70B.

The first pallet stocker 20A has five levels of shelves formed in the first and second pallet accommodating portions. The position of each shelf is displayed in S1 to S10. The first pallet stocker 20A functions as a loading station, and a pallet on which the work 50 is placed is prepared on each shelf.
For explanation, the pallet on which the work 50 is placed is indicated by reference numeral 40A. 2nd functioning as unloading station
The pallet stocker 20B also has five-stage shelves formed in the first and second pallet storage sections. S1 to S1
Displayed in S10. Before the automatic operation is started, the second pallet stocker 20B removes the shelf S2 except for the first shelf S1.
~ A total of 9 empty pallets are prepared on the shelf S10. For explanation, an empty pallet on which no work is placed is denoted by reference numeral 40B.
Indicated by

FIG. 6 shows a table 110 of the laser beam machine 10.
This shows a state in which the pallet 40A on which the work 50 is placed is supplied, and automatic processing is started. When a start of automatic processing is commanded from this state, the laser processing machine 10 performs necessary processing on the work 50 on the table 110.

FIGS. 7 to 9 show a pallet on which a work having been processed is placed on a second pallet stocker 20B as an unloading station, and a new pallet on which a work is placed from the first pallet stocker 20A. Is supplied to the table 110 of the processing machine 10. With the completion of machining, the second
Pallet lifter 70B grasps pallet 40A on table 110 and rises. Similarly, the first pallet lifter 70A also holds the pallet 40A on the shelf S1 of the first pallet stocker 20A and rises.

FIG. 8 shows a gantry 61 holding a pallet.
0 indicates a state of having moved on the carter 600. By this movement, the first pallet device 70A is positioned on the table 110, and the second pallet device 70B is positioned on the second pallet stocker 20B. FIG. 9 shows the pallet 40A held by the first pallet lifter 70A.
Is lowered onto the table 110 and the arm is turned to the standby position, and the second pallet lifter 70B
To the empty shelf S1 of the second pallet stocker 20B.
This shows a state in which the arm has been turned down and lowered.

FIG. 10 shows a second pallet stocker 40.
In B, the pallet 40A on which the work is placed is placed on the shelf S10.
And the empty pallet 40B has been lifted from the shelf S2 to the shelf S1. FIG. 11 shows that the second pallet lifter 70B is mounted on the shelf S1 of the second pallet stocker 20B.
The upper pallet 40B is gripped and raised. FIG. 12 shows a state in which the first gantry 610 has moved in the direction of the first pallet stocker 20A and the second gantry 650 has also moved in the same direction on the first gantry 610. In this state, the second pallet lifter 70B is positioned directly below the first pallet lifter 70A.

FIG. 13 shows a second pallet lifter 70B.
Shows a state in which the pallet 40B held by the user has been dropped on the shelf S1 of the first pallet stocker 20A and returned to the standby position. FIG. 14 shows that the first gantry 610 stops at the same position, and the second gantry 650 moves on the first gantry 610 to move the second pallet lifter 70B.
Shows a state in which is positioned just above the table 110 of the laser beam machine. During this time, the first pallet stocker 2
At 0A, the empty pallet 40B returned to the shelf S1
Is moved horizontally to the shelf S10, and the pallet 40A on which the work 50 of the shelf S2 is placed rises to the shelf S1. This allows
Returning to the state of FIG. 6, the work 50 on the table 110 of the laser beam machine is machined.

Hereinafter, the above-described steps are repeated, and the automatic operation is continued until the pallet 40A on which all the works prepared on the respective shelves of the first pallet stocker 20A are placed is sent to the second pallet stocker 20B. . Second
By removing the product from the pallet 40A on which the processed work sent to the pallet stocker 20B is mounted and mounting a new material work on the empty pallet 40B returned to the first pallet stocker 20A, Continuous processing can be continued.

[0042]

As described above, the present invention is directed to a laser processing apparatus which prepares a pallet on which a workpiece is mounted on a pallet stocker and sequentially supplies the pallets to a laser processing machine to achieve continuous processing. Since the pallet stockers are provided on both sides of the laser processing machine extending in the longitudinal direction, the floor space can be effectively used. Since the distance between the pallet stocker and the laser processing machine is shortened, the pallet transport path is also shortened, and the production efficiency is improved. Further, the pallet on which the material work is placed and the pallet on which the processed work is placed are simultaneously transported in one direction, so that idle time can be reduced. Then, since the empty pallet is traversed above the table being processed and returned to the loading station side, the unloading of the processed work and the loading of the material can be performed at the same time. Can be formed.

Since the loading station and the unloading station are provided with two rows of shelves for storing pallets formed vertically, it is possible to set a large amount of pallets without decreasing the overall height. Since the height position at which the pallet transfer device takes out the pallet from the shelf and the height position at which the pallet is returned to the shelf can be matched with the height position of the table of the laser beam machine, the pallet transfer time can be further reduced. . In addition, since the work of attaching the workpiece to the pallet and removing the product is performed at the height of the table of the processing machine, the work is easy and the productivity is improved. Also,
Since the attachment of the material / work to the pallet and the removal of the product can be simultaneously and continuously performed, the work can be continuously performed without interrupting the work.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an outline of an entire laser processing apparatus according to the present invention.

FIG. 2 is an explanatory view showing an outline of a pallet transfer device of the laser processing device of the present invention.

FIG. 3 is an explanatory view showing an outline of a pallet lifter of the laser processing apparatus of the present invention.

FIG. 4 is an explanatory view showing an outline of a table of a laser processing machine of the laser processing apparatus of the present invention.

FIG. 5 is an explanatory view showing an outline of a pallet stocker of the laser processing apparatus of the present invention.

FIG. 6 is an explanatory diagram showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 7 is an explanatory view showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 8 is an explanatory view showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 9 is an explanatory view showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 10 is an explanatory diagram showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 11 is an explanatory view showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 12 is an explanatory view showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 13 is an explanatory diagram showing a pallet transfer step in the laser processing apparatus of the present invention.

FIG. 14 is an explanatory view showing a pallet transfer step in the laser processing apparatus of the present invention.

[Explanation of symbols]

 Reference Signs List 1 laser processing device 10 laser processing machine 110 table 20A first pallet stocker 20B second pallet stocker 30A first pallet storage unit 30B second pallet storage unit 40 pallet 50 work 60 pallet transfer device 600 garter 610 first Gantry 650 Second gantry 70A First pallet lifter 70B Second pallet lifter 80 System controller

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Toshiaki Kawase 1st, Oguchi-machi, Oguchi-cho, Niwa-gun, Aichi Prefecture Inside the headquarters and factory of Yamazaki Mazak Co., Ltd. (56) References JP-A-5-84588 (JP, A) JP-A-60-258024 (JP, A) JP-A-4-169418 (JP, A) JP-A-3-264241 (JP, A) JP-A-3-8629 (JP, A) JP-A-1-138543 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23K 26/10 B23K 37/00 B23Q 7/00

Claims (3)

(57) [Claims] 1. A laser processing machine, a pallet on which a work for laser processing is mounted and which is detachably attached to a table of the laser processing machine, and a plurality of pallets provided on one side of the laser processing machine. A first pallet stocker for accommodating, a second pallet stocker disposed on the other side of the laser machine for accommodating a plurality of pallets, a table of the first and second pallet stockers and a table of the laser machine; Pallet transporter that transports pallets between the pallet stockers forms the bottom shelf
Roller to support the pallet and the top shelf
Supports pallets and retracts when pallets are raised
First pallet storage with roller pivoting to position
And a roller that forms the bottom shelf and supports the pallet
And form the top shelf to support the pallet
Roller that turns to the retracted position when the pallet descends
Laser processing apparatus provided with a second pallet storage unit . 2. The pallet stocker includes a first pallet.
The pallet on the uppermost shelf of the storage unit is transferred to the second pallet storage unit.
To the top shelf of
Pallet on the bottom shelf of the first pallet
2. The laser processing apparatus according to claim 1, further comprising: means for transferring to a lower shelf . 3. The pallet stocker includes a top shelf and a top shelf.
A chain that circulates vertically to the lower shelf and a chain
With equally spaced pins on the chain
Supports the pallet, thereby increasing the pallet storage shelf.
The laser processing apparatus according to claim 1, wherein the laser processing apparatus is formed.