JP2018051613A - Workpiece conveyance device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laser machining device capable of improving machining efficiency by shortening time when supply side workpiece holding means stands by at a supply side workpiece replacement standby position.SOLUTION: A workpiece conveyance device is a device for conveying a first workpiece before machining and a second workpiece after machining between the workpiece conveyance device and a machining means installation side. The workpiece conveyance device includes: a first stocker which loads the first workpiece and is arranged along the conveyance direction; a second stocker which loads the second workpiece and is arranged along the conveyance direction; and a suction head which has first suction surface and second suction surface which mutually have directions by 180 degrees, can be vertically reversed and can be moved in the conveyance direction. The workpieces are carried-out and carried-in by one time reciprocating of the suction head.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laser processing apparatus for drilling a work carried into a table from a stocker, and more particularly to a technique for carrying in and carrying out a plurality of works simultaneously.

  Conventionally, as a laser processing apparatus that simultaneously performs laser processing on a plurality of workpieces such as printed circuit boards, a workpiece holding means for carrying in and a workpiece holding means for carrying out are separately provided, and the workpiece before processing is loaded using the workpiece holding means for loading. The workpiece before processing is carried from the placed stocker to the table, and after machining the workpiece, the workpiece after machining is unloaded from the table using the workpiece holding means for unloading. At that time, a technique is known in which the workpiece replacement time is shortened by previously waiting the workpiece before machining above the workpiece after machining (Patent Document 1).

JP2014-065051

  In the above technique, since the loading work holding means and the unloading work holding means are provided separately, when the work is placed on the table by the loading work holding means, the unloading work holding means is If the workpiece is not moved to the detached position, the loading work holding means cannot be lowered to place the work on the table. Therefore, the carry-in work holding means has to stand by above the table before the carry-out work holding means moves to a position off the upper side of the table, and the production efficiency is lowered.

  An object of the present invention is to solve the above-described problems, to reduce the waiting time during workpiece replacement, and to improve production efficiency.

  In order to solve the above-described problems, the present invention provides a workpiece transfer device for transferring a first workpiece before processing and a processed second workpiece to and from the processing means installation side. A first stocker for loading and disposed along the transport direction; a second stocker for stacking the second workpiece and disposed along the transport direction; A suction head having first and second suction surfaces that are in directions of 180 degrees to each other, the first and second suction surfaces being upside down and movable in the transport direction. It is characterized by carrying out and carrying in the workpiece in one round trip.

  According to the present invention, it is possible to reduce the waiting time during workpiece replacement and improve the production efficiency.

1 is an overall configuration diagram of a laser processing apparatus according to the present invention. It is a block diagram of the inversion mechanism which concerns on this invention. It is a flowchart showing the whole process of the laser processing which concerns on this invention. It is a flowchart showing the whole process of the laser processing which concerns on this invention. It is a flowchart showing the carrying-in preparation process which concerns on this invention. It is a perspective view showing the operation | movement which mounts a workpiece | work on the workpiece mounting base which concerns on this invention. It is a flowchart showing the carrying-in process which concerns on this invention. It is a flowchart showing the processing process which concerns on this invention. It is a flowchart showing the 2nd carrying-in preparation process which concerns on this invention. It is a perspective view showing the inversion operation | movement in the 2nd carrying-in preparation process which concerns on this invention. It is a perspective view showing the position of the adsorption head after inversion in the carrying in / out process concerning the present invention. It is a flowchart showing the carrying in / out process which concerns on this invention. It is a perspective view showing the inversion operation | movement in the carrying in / out process which concerns on this invention. It is a perspective view showing the position of the adsorption head after inversion in the carrying-out process concerning the present invention. It is a flowchart showing the storing process which concerns on this invention. It is a flowchart showing the carrying-out process which concerns on this invention.

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

  FIG. 1 is an overall configuration diagram of a laser processing apparatus according to an embodiment of the present invention. In the same figure, 1 is a laser processing machine, 2 is a carrying in / out part (work conveyance apparatus), and a laser processing apparatus is mainly comprised from the laser processing machine 1 and the carrying in / out part 2. FIG. FIG. 2 shows details of the suction head.

  Reference numeral 3 denotes an XY table, which can move a plurality (two in the figure) of workpieces 4 in the X direction and the Y direction. The work 4 is sucked or released on the XY table 3 by a vacuum suction table (not shown). Reference numerals 5a and 5b denote laser units which irradiate the workpiece 4 with laser light, and the two workpieces 4 are simultaneously processed by the laser units 5a and 5b. A portal column 6 has laser units 5a and 5b attached to the side surfaces. Reference numeral 7 denotes a bed, on which an XY table 3 and a portal column 6 are installed. A control device 8 controls the laser beam machine 1 and the carry-in / out unit 2. The laser beam machine 1 includes the XY table 3, the laser units 5a and 5b, the portal column 6 and the bed 7 as described above.

  Reference numerals 9a and 9b are constituted by a suction nozzle portion attached with a suction nozzle by a suction head. Reference numerals 10a and 10b denote suction nozzle portions. Each suction nozzle section 10a, 10b is provided with a plurality of suction nozzles 11 for sucking or releasing the workpiece 4. Therefore, the workpiece 4 to be loaded before being sucked by the first suction surface composed of the suction nozzles 11 arranged in the lower direction of the suction heads 9a and 9b in the Z direction and then unloaded is processed. Is sucked by the second suction surface composed of the suction nozzles 11 arranged in the upward direction of the Z direction of the suction heads 9a, 9b. That is, the first suction surface and the second suction surface are arranged so as to be in a direction of 180 degrees with respect to each other.

  Reference numerals 12a and 12b denote reversing mechanisms. A suction nozzle portion 10a is attached to 12a, and a suction nozzle portion 10b is attached to 12b. The reversing mechanism 12a reverses the suction surface by vertically reversing the suction nozzle portion 10a and the reversing mechanism 12b by vertically reversing the suction nozzle portion 10b. Reference numerals 13a and 13b denote lifters that move the reversing mechanisms 12a and 12b in the vertical direction (Z direction), respectively. The reversing mechanism 12a and the reversing mechanism 12b are composed of a rotating mechanism such as a motor and can be independently reversed.

  14 is a slider, and lifters 13a and 13b are fixed to the side surfaces. A guide rail 15 supports the slider 14 so as to be slidable in the Y direction. Reference numeral 16 denotes a work mounting table that temporarily holds the work 4 and moves it in the Y direction. Reference numeral 18a denotes a carry-out side stocker, which is movable in the Z direction on an upper and lower table 17a on which a plurality of processed workpieces 4 are placed. Reference numeral 18b denotes a carry-in side stocker, which is movable in the Z direction on an upper and lower table 17b on which a plurality of workpieces 4 before processing are placed. The lifters 13a and 13b can be raised and lowered independently. The loading / unloading unit 2 for loading and unloading the workpiece 4 to / from the laser processing machine 1 includes the suction heads 9a and 9b, the reversing mechanisms 12a and 12b, the lifters 13a and 13b, the slider 14, and the guide. The rail 15, the workpiece mounting table 16, the upper and lower tables 17 a and 17 b, the carry-out side stocker 18 a and the carry-in side stocker 18 b are configured.

  3 to 5, 7 to 9, 12, 15, and 17 are flowcharts showing the laser processing operation according to the present invention, and the operation according to this is programmed in the control device 8.

  3 and 4 show the entire process of laser processing according to the present invention. After carrying in the carry-in preparation process (A1) (step S001) and the carry-in process (A2) (step S002), the machining process (B) (step The process proceeds to S003) and the second carry-in preparation step (A3) (Step S004). Then, after carrying in / out process (A4) (step S005), it transfers to processing process (B) (S006) and storage process (C1) (step S007). After completion of the machining step (B) (S006), it is determined whether there is a workpiece to be machined next (step S008). If there is a workpiece to be machined next, the process proceeds to step S005. After performing (C2) (step S012) and the storing step (C1) (step S013), all the steps are finished. After the storing step (C1) (step S007), it is determined whether or not there is a workpiece to be processed next (step S009). If there is a workpiece to be processed next, the second carry-in preparation step (A3) (step S010) is performed. Then, the process proceeds to step S005, and if there is no workpiece to be processed next, steps S012 and S013 are performed, and all the processes are completed.

  Next, details of the carry-in preparation step (A1) will be described with reference to FIGS. In step A101, the suction head 9b is lowered, and the unprocessed workpiece 4 loaded on the stocker 18b is sucked. Thereafter, a workpiece separation operation for moving the suction head 9b up and down several times is performed (step A102). By performing the workpiece separation operation, it is possible to shake off the excess workpiece attached to the substrate to be processed. Next, the suction head 9b is raised and the workpiece mounting table 16 is moved above the stocker 18b (step A103), and then the suction head 9b is lowered and the workpiece is placed on the workpiece mounting table 16 (step A104). . FIG. 6 shows a state in the middle of placing the workpiece on the workpiece placing table 16 (step A104). The suction head 9b is raised, the work mounting table 16 is moved above the stocker 18a on the XY table 3 side (step A105), the suction heads 9a and 9b are lowered to suck the work 4 (step A106), and the suction head 9b. Is moved up and down several times to perform the workpiece separating operation (step A107), the suction heads 9a and 9b are raised (step A108), and the loading preparation step (A1) is completed.

  FIG. 7 is a flowchart showing the carry-in process (A2). In step A201, the suction heads 9a and 9b that have sucked the workpiece 4 are started to move to the XY table at the loading / unloading position, which is the position on the front side of the laser processing machine (position facing the portal column 6 in the Y direction). That is, the work 4 is started to move to the processing means installation side. After that, when the suction heads 9a and 9b are moved above the XY table 3, the suction heads 9a and 9b are lowered to place the workpiece 4 on the XY table 3 (step A202), and then lifted (step A203). It is moved to a position (above the workpiece mounting table 16 and the stocker 18b) (step A204). Next, when there is a workpiece 4 to be processed (step A205), the process proceeds to the second carry-in preparation process (A3) and the carry-in process (A2) is terminated, and the process proceeds to the next machining process (B).

  FIG. 8 is a flowchart showing the processing step (B). The XY table 3 is driven to move the workpiece 4 to a machining position below the laser units 5a and 5b (step B101). Next, laser processing of the workpiece 4 is started (step B102), and after the processing is finished (step B103), the processing process is ended.

  The second carry-in preparation step (A3) will be described with reference to FIG. 9, FIG. 10, and FIG. FIG. 9 is a flowchart showing the second carry-in preparation step, FIG. 10 is a perspective view of the first suction surface for carrying-in and the second suction surface for carry-out being turned upside down, and FIG. 11 respectively. In step A301, the suction head 9b is lowered, and the unprocessed workpiece 4 loaded on the stocker 18b is sucked. Thereafter, a workpiece separating operation for moving the suction head 9b up and down several times is performed (step A302). Next, after the suction head 9b is raised and the workpiece mounting table 16 is moved above the stocker 18b (step A303), the suction head 9b is lowered and the workpiece is placed on the workpiece mounting table 16 (step A304). . The suction head 9b is raised, the workpiece mounting table 16 is moved to the XY table 3 side (step A305), the suction heads 9a and 9b are lowered to suck the work 4 (step A306), and the suction head 9b is moved up and down several times. After performing the workpiece separation operation (step A307), the suction heads 9a and 9b are raised (step A308), and the first suction surface and the second suction surface of the suction head 9a, and the first suction surface and the second suction surface of the suction head 9b are changed. The second suction surface is turned upside down so that the first suction surface is positioned upward in the Z direction and the second suction surface is positioned downward in the Z direction (step A309), and the second carry-in preparation step (A3) is completed.

  The carry-in / out operation will be described with reference to FIGS. 12, 13, and 14. A flowchart showing the carry-in / out step (A4) is shown in FIG. In step A401, the suction heads 9a and 9b are moved upwards of the XY table, the suction heads 9a and 9b are lowered, and the processed workpiece 4 placed on the XY table is sucked by the second suction surface and then lifted. (Step A402, Step A403). Thereafter, the second suction surface and the first suction surface of the suction head are turned upside down so that the second suction surface is positioned upward in the Z direction and the first suction surface is positioned downward in the Z direction (step A404). The suction head 9a and the suction head 9b are lowered to place the unprocessed workpiece 4 on the XY table 3 and then lifted (step A405, step A406). FIG. 13 shows a perspective view (in the middle of step A404) while the first suction surface and the second suction surface of the suction head are turned upside down, and FIG. 14 shows a perspective view after the reverse (step A406). Thereafter, the suction heads 9a and 9b are moved to the unloading position above the work table 16 and the loading-side stocker 18b (step A407), and the first suction surface and the second suction surface of the suction head are turned upside down. After (step A408), the carry-in / out operation is terminated.

  FIG. 15 is a flowchart showing the storing step (C1). First, the workpiece mounting table 16 is moved above the loading-side stocker 18b, the suction heads 9a and 9b are lowered, and the workpiece is placed on the stocker 18a and the workpiece mounting table 16 (step C101), and the suction heads 9a and 9b are moved. After being raised, the workpiece mounting table 16 is moved above the stocker 18a (step C102). After the suction head 9a is lowered to suck the workpiece 4 on the workpiece mounting table 16 (step C103), the suction head 9a is lifted and the workpiece mounting table 16 is moved above the stocker 18b (step C104). After the suction head 9a is lowered and the workpiece 4 is placed on the stocker 18a, the suction head 9a is raised (step C105), and the storing step is completed. In the present embodiment, it has been described that the work is placed on the work placement table 16 and then stored in the stocker 18a. However, the work placement table 16 is not used and the work is placed on the stocker 18a by the suction head 9b. After the workpiece being placed is placed, the workpiece sucked by the suction head 9a may be placed. In this case, the time for storing the workpiece after machining can be further shortened. Further, in the flowchart of FIG. 3, when the second carry-in preparation step in step S010 is performed after the storage step in step S007 is completed, the second suction surface is left as it is because the second suction surface for unloading has come down. Use as a surface. In this case, it is not necessary to turn the second suction surface and the first suction surface upside down again.

  The carry-out process (C2) will be described with reference to the flowchart of FIG. The XY table 3 is driven to move the workpiece 4 that has been processed to the loading / unloading position (step C201), the suction heads 9a and 9b are moved to the loading / unloading position (step C202), and the suction head moved to the loading / unloading position. 9a and 9b are moved down and lifted after the work 4 is attracted (step C203, step C204). Thereafter, the suction heads 9a and 9b are moved to a carry-out position above the carry-out side stocker 18a and the workpiece mounting table 16 (step C205), and the carry-out operation is completed.

  In the embodiment described above, the case where two laser units are provided and two workpieces 4 are simultaneously processed has been described. However, even when one workpiece 4 is processed by using a single suction head and laser unit, The present invention can be applied. For example, only the suction head 9a is used, and the first suction surface of the suction head 9a sucks the unprocessed workpiece 4 placed on the loading-side stocker 18b, and the first suction surface and the second suction surface are turned upside down. After the suction head 9a is moved to the processing means installation side, the processed workpiece 4 placed on the XY table 3 is sucked by the second suction surface, and the second suction surface and the first suction surface are turned upside down. The workpiece 4 before processing may be opened and placed on the XY table 3. In this case, it is not necessary to provide the workpiece mounting table 16.

  In the present invention, three or more laser units may be provided, and three or more workpieces 4 may be simultaneously processed. In this case, the number of suction heads can be the same as the number of laser units, and the number of work mounting tables 16 can be reduced by one.

  As can be understood from the above description, in the present invention, a suction head that can vertically flip the loading suction surface and the unloading suction surface is used, so that the processing time can be shortened compared to the prior art. And the processing throughput can be improved.

  It should be noted that the present invention is not limited to the above-described embodiments, and various modifications are possible, and all technical matters included in the technical idea described in the scope of claims are the subject of the present invention.

DESCRIPTION OF SYMBOLS 1 Laser processing machine 2 Carrying in / out part 3 XY table 4 Work 5a, 5b Laser unit 6 Portal column 7 Bed 14 Slider 15 Guide rail

Claims (2)

In the workpiece transfer device for transferring the first workpiece before processing and the processed second workpiece between the processing means installation side,
A first stocker for loading the first workpiece, which is disposed along the transport direction;
A second stocker for loading the second workpiece, which is disposed along the transport direction;
A suction head having first and second suction surfaces that are in directions of 180 degrees to each other, the first and second suction surfaces can be turned upside down and moved in the transport direction;
With
The suction head sucks the first workpiece from the first stocker by the first suction surface, moves from the first stocker to the processing means installation side, and is turned upside down by the second suction surface of the suction head. A workpiece transfer apparatus configured to suck the second workpiece and then reverse the suction head to open the first workpiece from the first suction surface. In the work conveyance apparatus of Claim 1,
Two suction heads are arranged along the transport direction,
A workpiece mounting table on which the first workpiece is temporarily mounted and movable in the transport direction;
With
After any one of the two suction heads sucks the first workpiece from the first stocker by the first suction surface and places the first workpiece on the workpiece placement table, the workpiece placement table is Move above the second stocker,
When one of the two suction heads sucks the first workpiece from the first stocker by the first suction surface and moves to the processing means installation side, the other suction head A workpiece transfer device configured to simultaneously suck the first workpiece from the workpiece mounting table by the first suction surface and move to the upper side on the processing means installation side.

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