JP2021084131A - Laser beam machining device - Google Patents

Abstract

To provide a laser beam machining device which can reduce a reading time of an alignment mark and can improve processing efficiency.SOLUTION: The laser beam machining device has: suction heads on a carry-in side arranged in a first direction as many as a plurality of work-pieces; and work-piece mounting tables which are in the same number as the plurality of work-pieces for temporarily mounting work-pieces before they are shifted to a table. The respective work-piece mounting tables have alignment functions for the mounted work-pieces. One of them is a movable form which moves in a second direction and receives the work-piece from a carry-in side stocker. While the movable form work-piece mounting table is arranged in the first direction together with another work-piece mounting table, work-pieces from the movable form work-piece mounting table are moved to another work-piece mounting table by the suction head, and while all the work-piece mounting tables are arranged in the first direction, the work-pieces after alignment operation is performed by the suction head from each of all the work-piece mounting tables are moved to the table.SELECTED DRAWING: Figure 1

Description

The present invention relates to, for example, a laser processing apparatus for irradiating a printed circuit board with a laser to perform drilling.

In recent years, as a laser processing apparatus, for example, as disclosed in Patent Document 1, a laser processing machine main body, a single work supply side stocker, a single work discharge stocker, and a work are temporarily used. It is composed of a supply-side moving device and a discharge-side moving device having a work mounting table to be held, and temporarily supplies a work to the work mounting table when processing a plurality of works to be simultaneously supplied, simultaneously processed, and simultaneously discharged. Some of them have made it possible to reduce the installation area of the equipment by making the supply stocker and the discharge stocker a single unit.

However, in the method disclosed in Patent Document 1, since the works placed on the work cradle and the stocker are not aligned, when the work is carried onto the table from the work cradle and the stocker, it is provided on the work surface. The alignment mark is out of the imaging area of the camera for reading the alignment mark. Therefore, it takes time to read the alignment mark, and the processing efficiency is lowered.

Japanese Patent Application Laid-Open No. 2005-297007

Therefore, an object of the present invention is to obtain a laser processing apparatus capable of shortening the reading time of the alignment mark and improving the processing efficiency.

Among the inventions disclosed in the present application, a typical laser processing apparatus has a carry-in side stocker on which a workpiece before processing is loaded and a plurality of workpieces placed side by side in the first direction in the first direction and In a laser processing apparatus having a table for moving in a second direction orthogonal to the first direction, and laser units arranged side by side in the first direction for processing each of the plurality of workpieces. , The same number of suction heads on the carry-in side as the plurality of workpieces arranged in the first direction, and the same number of workpiece mounting tables as the plurality of workpieces for temporarily mounting the workpieces before being transferred to the table. Each of them has a function of aligning the mounted workpieces, one of which is a movable type that moves in the second direction and receives the workpiece from the carry-in side stocker, and the above. The movable work mounting table is arranged side by side with the other work mounting table in the first direction, and the work is moved from the movable work mounting table to the other work mounting table by the suction head, and all the work mounting tables are used. The workpieces were arranged in the first direction, and the workpieces after the alignment operation was performed by the suction head from each of all the workpiece mounting tables was moved to the table.

The typical features of the invention disclosed in the present application are as described above, but the features not described here are described in the form for carrying out the invention described later, and claims for patent. As shown in the range.

According to the present invention, the reading time of the alignment mark can be shortened and the processing efficiency can be improved.

It is a figure for demonstrating the structure of the laser processing apparatus which concerns on one Example of this invention. It is a figure which shows the structure for performing the work alignment function in an Example. It is a figure for demonstrating the alignment operation of work in an Example. It is a flowchart for demonstrating the work carry-in operation in an Example. It is a flowchart for demonstrating the work carry-in operation in an Example. It is a flowchart for demonstrating a series of processing operations in an Example.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In the following description, the same reference numerals are given to the equivalent parts, and the description thereof will be omitted.

FIG. 1 is a diagram showing a structure of a laser processing apparatus according to an embodiment of the present invention. In the figure, the laser machining apparatus refers to a laser machining machine 2 for laser machining holes and grooves in a work 1, a carry-in device 3 for supplying an unprocessed work 1 to the laser machining machine 2, and a laser machining machine 2. It is composed of a carry-out device (not shown) that is provided at a position symmetrical to the carry-in device 3 and discharges the processed work 1. The laser machining machine 2 has an XY table 4 capable of moving a plurality of mounted workpieces 1 in the X and Y directions, and a vacuum adsorption machine 2 fixed on the XY table 4 to attract or release the workpieces. A table (not shown), a plurality of laser units 5 (two in the figure) that irradiate each of the plurality of workpieces 1 with laser light, arranged side by side in the Y direction, and a plurality of laser units. It includes a gate-shaped column 6 provided with 5, a bed 7 on which an XY table 4 is installed, and a control device 8 for controlling a laser processing machine 5 and a carry-in device 3 described later.

On the other hand, the carry-in device 3 has a suction head 10a provided with a plurality of suction pads 9a for sucking or releasing the work 1, a lifter 11a for raising and lowering the suction head 10a, and a suction head provided with a plurality of suction pads 9b. A lifter 11b for raising and lowering 10b, a slider 12 to which the lifter 11a and the lifter 11b are fixed, a guide rail 13 for guiding the slider 12, and a fixed work mounting table for temporarily holding the work 1. A work mounting table 15 that can move in the X direction, a stocker 16 on which a plurality of works 1 to be machined are loaded, a slider 12, a work mounting table 14, a work mounting table 15, and a stocker 16 are provided. It is provided with a carry-in device pedestal 17. The suction heads 10a and 10b are arranged side by side in the Y direction and are movable in the Y direction. The lifters 11a and 11b can be raised and lowered independently. Above the stocker 16, a suction head 10c provided with a plurality of suction nozzles 9c and a lifter 11c for moving the suction head 10c in the Z direction of the paper surface are arranged. When moving the work mounting tables 14 and 15 to the XY table 4, as shown in FIG. 1, the plurality of works 1, the XY table 4, the suction heads 10a and 10b, and the work mounting tables 14 and 15 are in the Y direction. Is placed in a straight line.

The work 1 is placed on each of the work mounting tables 14 and 15 as follows.
First, regarding the work mounting table 14, the work mounting table 15 moves from the position shown in the figure to the stocker 16 side, and one work 1 is moved from the stocker 16 to the work mounting table 15. After that, the work mounting table 15 returns to the position shown in the drawing, and the work 1 mounted on the work mounting table 15 is moved to the work mounting table 14 by the suction head 10b.
Next, the work mounting table 15 moves from the position shown in the drawing to the stocker 16 side again, and one work 1 is moved to the work mounting table 15. After that, it returns to the position shown in the figure.
In this way, one work 1 is placed on each of the work mounting tables 14 and 15.
Each of the work mounting tables 14 and 15 has a function of aligning the work 1 mounted therein.

FIG. 2 is a diagram for explaining the structure for the alignment function in the work mounting tables 14 and 15, and the state before alignment is shown in (a) and the state after alignment is shown in (b), respectively.
In FIG. 2, each of 18 and 19 is a work alignment member, and when the work is aligned, it abuts on two sides of the rectangular work 1. The work alignment members 18 and 19 are driven by a driving means (not shown) controlled by the control device 8. Before the work 1 is placed, the work aligning member 18 is moved to the lower side of the paper surface, and the work aligning member 19 is moved to the left side of the paper surface. After the work 1 is placed, the work alignment member 18 is driven in the X direction (direction of the arrow) and the work alignment member 19 is driven in the Y direction (direction of the arrow) to align the work 1.
Further, in FIG. 3, 20 indicated by a solid line is a position before alignment of the work 1, and 21 indicated by a dotted line is a position after alignment of the work 1. Immediately after the work 1 is placed on the work mounting tables 14 and 15 by the suction head 10b, the work 1 is placed at the position 20, and is aligned with the position 21 indicated by the dotted line by the work aligning means.
The work 1 which has been placed on the work mounting tables 14 and 15 and whose alignment operation has been completed is moved to the XY table 4 by the suction heads 10a and 10b.

4 and 5 are flowcharts for explaining the work loading process. The operation of each step is as follows.
Step 501: One of the works 1 loaded on the stocker 16 is raised while being sucked by the suction head 10c.
Step 502: The work mounting table 15 is moved to the rear of the device, that is, above the work 1 loaded on the stocker 16 and below the work 1 sucked in step 501.
Step 503: The suction head 10c is lowered to place the work 1 on the upper surface of the work mounting table 15, and the suction head 10c is raised. At this time, the work alignment members 19 and 20 of the work mounting table 15 are in a state of being released from pressing.
Step 504: The work mounting table 15 on which the work 1 is placed is moved to the position shown in FIG.
Step 505: The suction head 10b is lowered to suck the work 1 and then raise it.
Step 506: The suction head 10b is moved above the work mounting table 14.
Step 507: The suction head 10b is lowered to place the work 1 on the work mounting table 15, and then the suction head 10b is raised.
Step 508: The suction head 10b is moved above the work mounting table 15.
Step 509: The suction head 10c is lowered to suck the work 1 and then raise it.
Step 510: The work mounting table 15 is moved to the rear of the device, that is, above the work 1 laminated on the stocker 16 and below the work 1 sucked by the suction head 10c raised in step 509.
Step 511: The suction head 10c is lowered to place the work 1 on the work mounting table 15, and then the suction head 10c is moved upward.
Step 512: The work mounting table 15 is moved to the position shown in FIG.
Step 513: Drive the work alignment members 18 and 19 to align the work 1 placed on the work mounting tables 14 and 15 at a predetermined position, and then move the work alignment member 18 to the lower side of the paper surface to align the work alignment member 19 Is driven to the left side of the paper to release the pressing.
Step 514: The suction heads 10a and 10b are lowered to raise the work 1 aligned on the work mounting tables 14 and 15, respectively.
Step 515: The suction heads 10a and 10b are moved above the XY table 4.
Step 516: The suction heads 10a and 10b are lowered, the work 1 is placed on the XY table 4, and then the suction heads 10a and 10b are raised.
Step 517: The suction heads 10a and 10b are moved to the right side of the device, that is, above the work mounting tables 14 and 15.

FIG. 6 is a flowchart for explaining a series of machining operations in the embodiment. Under the control of the control device 8, laser machining is performed by the following processing steps.
Step 601: The control device 8 determines whether the work 1 to be machined is in the stocker 16, and if there is a work 1 to be machined, the process proceeds to step 602, and if there is no work 1 to be machined, a series of operations is performed. finish.
Step 602: The work 1 is carried from the carry-in device 3 to the XY table 4 of the laser processing machine 2. After carrying in, the process proceeds to step 603.
Step 603: The work 1 is laser machined.
Step 604: The machined work 1 is moved from the laser machine 2 to a unloading device (not shown).
Here, steps 501 to 514 of the carry-in step 602 may be performed during the period of the processing step 603, and the work 1 to be carried in next may be sucked up and raised by the suction heads 10a and 10b to prepare. In this case, the setup time can be shortened and the processing efficiency can be improved.

According to the above embodiment, since the work 1 is aligned on both the work mounting tables 14 and 15 and then carried into the XY table 4, the alignment mark reading time is shortened and the processing is performed without widening the width of the device. Efficiency can be improved.
Further, during the period of moving the work 1 from the work mounting table 15 to the work mounting table 14, a new work 1 can be mounted on the work mounting table 15 by using the suction head 10c, that is, step 505 of FIG. Since steps 509 to 512 can be processed in parallel while performing ~ 508, the preparation time of the work 1 can be shortened and the machining efficiency can be improved.

Although the present invention has been described above based on the examples, the present invention is not limited to the examples, and it goes without saying that various modifications can be made without departing from the gist thereof. Is included.

1: Work 2: Laser processing machine 3: Carry-in device 4: XY table 5: Laser unit 6: Column 7: Bed 8: Control device 9a, 9b, 9c: Suction pad 10a, 10b, 10c: Suction head 11a, 11b, 11c: Lifter 12: Slider 13: Guide rail 14: Work mounting table 15: Work mounting table 16: Stocker 17: Carrying device pedestal 18, 19: Work alignment member

Claims (2)

The carry-in side stocker on which the work before processing is loaded, and
A table for moving a plurality of workpieces placed side by side in the first direction in the first direction and a second direction orthogonal to the first direction.
A laser unit arranged side by side in the first direction for processing each of the plurality of workpieces, and a laser unit.
In the laser processing equipment with
With the same number of suction heads on the carry-in side as the plurality of workpieces arranged in the first direction,
The same number of work mounting tables as the plurality of works for temporarily placing the work before being transferred to the table, each of which has a function of aligning the placed works, one of which is said. A movable type that moves in the second direction and receives the work from the carry-in side stocker, and
The movable work mounting table is arranged side by side with the other work mounting table in the first direction, and the work is moved from the movable work mounting table to the other work mounting table by the suction head.
The feature is that all the work mounting tables are arranged in the first direction, and the work after the alignment operation is performed by the suction head from each of the all work mounting tables is transferred to the table. Laser processing equipment. In the laser processing apparatus according to claim 1, at least the movable work mounting table is second before the same operation is performed again after the works mounted on all the work mounting tables are transferred to the table. A laser processing apparatus characterized in that the work is received from the carry-in side stocker by moving in the direction of the above, and the movable work mounting table is arranged in the first direction together with other work mounting tables.

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