JP2020006443A - Workpiece supply device - Google Patents

Abstract

To provide a workpiece supply device capable of supplying a workpiece without temporarily stopping operation of a workpiece supply robot, and capable of improving the safety by isolating an inside area, where the workpiece supply robot is operated, from an outside area by shutters.SOLUTION: A workpiece supply device 23 in a plate material processing system comprises, on a front side of a plate material processing machine 3 to process plate-like workpieces, a workpiece supply robot 5 to supply a workpiece W to the plate material processing machine 3; and a safety fence 21 around an operation area of the workpiece supply robot 5. In the workpiece supply device 23, a body frame 27 arranged in the same row as the safety fence 21 comprises workpiece carrying tables 35A and 35B freely movable to an inside area 25A corresponding to the operation area and to an outside area 25B opposite to the operation area, and comprises shutters 39L and 39R for freely opening and closing movement passages of the workpiece carrying tables 35A and 35B moving between the inside area 25A and the outside area 25B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a work supply device in a plate material processing system provided with a work supply robot that supplies a plate-shaped work to the plate material processing machine in front of a plate material processing machine such as a press brake. More specifically, the present invention relates to a work supply device that can supply a work to an operation area of the work supply robot even while the work supply robot is operating.

  2. Description of the Related Art Conventionally, a work supply robot is used to supply a work to various processing machines. In this case, the work supply position for the work supply robot is set within an operation range (operation area) of the work supply robot. Therefore, in order to set a new work at the work supply position, it is necessary to temporarily stop the operation of the work supply robot in order to ensure the safety of the worker. Therefore, there is a problem that the operating rate of the processing machine is reduced.

  Therefore, a safety fence is provided around the operation area (work area) of the robot to avoid the interference between the robot and the worker to ensure safety (for example, see Patent Document 1).

JP 2011-25390 A

  The configuration described in Patent Literature 1 is a configuration in which a loading / unloading device for a robot safety fence is provided in a part of a safety fence provided so as to surround a work area of the robot. The above-mentioned loading / unloading device for a robot safety fence is provided with a horizontally rotatable rotary table. Therefore, a part of the turntable is located inside and outside the safety fence. Therefore, by setting the work on the outer portion of the rotary table and rotating the rotary table, the set work can be positioned inside the safety fence and supplied to the robot.

  According to the above configuration, it is possible to supply the work into the operation area of the robot without temporarily stopping the operation of the robot, thereby improving the safety of the worker and, for example, improving the operation rate of the robot. However, in the configuration described in Patent Literature 1, the whole of the safety fence is formed by the fact that the partition wall supported on the rotary table by the support coincides with the safety fence.

  Therefore, at the time of rotation of the rotary table, the partition wall enters the operation area of the robot, and in some cases, the partition wall may interfere with the robot, and further improvement has been desired.

  The present invention has been made in view of the above-mentioned problem, and has a work supply robot that supplies a work to the plate material processing machine in front of a plate material processing machine that processes a plate-shaped work; A work supply device in a plate processing system provided with a safety fence around an operation area of a robot, wherein a main body frame arranged in the same row as the safety fence has an inner area corresponding to the operation area and an opposite of the operation area. A work placement table movable to the outside area, which is a side, and a shutter capable of opening and closing a movement passage of the work placement table moving between the inside area and the outside area.

  Further, in the work supply device, the outer region is a region where a work is mounted on the work mounting table, and the outer region includes an object detection sensor that detects intrusion of an object. I do.

  Further, in the work supply device, the main body frame includes a work piece taking device capable of lifting the work on the work mounting table moved to the inside area and transferring the work to the work supply robot. It is characterized by.

  Further, in the work supply device, the single work picking device includes a work suction unit, and the work suction unit is rotatable around a vertical axis and a horizontal axis and is movable in a horizontal direction. It is characterized by being provided in.

  Further, a work supply device that suctions a plate-shaped work stacked on a work mounting table and supplies the work to a plate material processing machine, wherein a work suction unit provided vertically movable around a vertical axis center and The work suction unit is provided so as to be rotatable about a horizontal axis and is movable in the horizontal direction.

  According to the present invention, the main body frame of the work supply device is arranged in the same row as the safety fence arranged around the operation area of the work supply robot. The work mounting table is configured to reciprocate between an inner area, which is an operation area of the work supply robot, and an outer area, which is on the opposite side. The moving passage of the work mounting table is configured to be opened and closed by a shutter.

  Therefore, only the work placement table invades the operation area of the work supply robot, and the moving path of the placement table is opened and closed by the shutter. Safety can be improved.

It is a top view showing roughly the whole composition of the board processing system provided with the work supply device concerning the embodiment of the present invention. It is a perspective view showing the schematic structure when the work supply device concerning an embodiment of the present invention is seen from the outside of a safety fence. It is a perspective view showing the schematic structure when the work supply device concerning an embodiment of the present invention is seen from the inside of a safety fence. It is a top view showing the schematic structure of the work supply device concerning the embodiment of the present invention. FIG. 3 is a perspective view showing a schematic configuration of a work piece taking apparatus. FIG. 3 is a perspective view showing a schematic configuration of a work piece taking apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, in order to facilitate understanding, an overall configuration of a plate processing system including a safety fence will be described.

  As conceptually and schematically shown in a plan view in FIG. 1, the plate processing system 1 includes a plate processing machine 3 that processes a plate-shaped work W. The plate processing machine 3 can be a bending machine such as a press brake for bending a plate-shaped work W and an ironing bending machine. Further, as the plate material processing machine 3, various press machines for shearing the work W or tapping machines for performing tapping, for example, can be used. That is, the plate processing machine 3 can be a processing machine that can perform various processing on the plate-shaped work W individually or simultaneously.

  In the present embodiment, a case where a press brake is employed as the plate processing machine 3 will be exemplified. On the front side (front side in the Y-axis direction) of the plate material processing machine 3, a work supply robot 5 having the same configuration as the robot described in, for example, JP-A-2014-151385 is provided. The configuration of the work supply robot 5 is known, but is briefly described as follows.

  A guide member 7 long in the left-right direction (X-axis direction) is provided on the front side of the sheet material processing machine 3, and a slide base 9 is provided on the guide member 7 so as to be movable and positioned in the left-right direction. .

  The slide base 9 is provided with a horizontally rotatable swivel 11 on which the base end of the first arm 13 swings up and down around a horizontal axis S1. Supported as possible. The distal end of the first arm 13 supports the proximal end of the second arm 15 that is rotatable around an axis S2 parallel to the axis S1. A third arm 17 that is rotatable around an axis S3 parallel to the axis S2 is supported on the distal end side of the second arm 15, and a workpiece W is mounted on the distal end of the third arm 17. Is provided.

  Therefore, the workpiece supply robot 5 can move and position in the left-right direction along the guide member 7. In addition, by turning the swivel table 11, the work clamp 19 can be positioned at a position where the work W is supplied to the plate processing machine 3 and at a position where the work W is turned 180 ° horizontally as shown in FIG. it can.

  A safety fence 21 is arranged around an operation area (operation range) of the work supply robot 5 to prevent an operator from entering. A work supply device 23 that supplies the work W to the work supply robot 5 is arranged in the same row as the safety fence 21. That is, the safety fence 21 is divided into an inner region 25A (including the operation region) corresponding to the operation region of the work supply robot 5 and an outer region 25B opposite to the inner region 25A. In other words, the area surrounded by the safety fence 21 so that the worker does not enter is the inside area 25A, and the area where the worker can move freely is the outside area 25B. The work supply device 23 also partitions the inner area 25A and the outer area 25B.

  As already understood, the inner area 25A in which the work supply robot 5 operates and the outer area 25B in which the worker works are separated by the safety fence 21, so that the work supply robot 5 and the worker interfere with each other. There is nothing and safety is improved.

  As shown in FIG. 1, the work supply device 23 is disposed on the opposite side of the plate processing machine 3 with the work supply robot 5 therebetween. Note that the work supply device 23 is not limited to the opposite side, and may be arranged on the left and right sides of the work supply robot 5. The main body frame 27 in the work supply device 23 is configured as shown in FIG. 1 or FIG. That is, as shown in FIG. 1, the work supply device 23 includes a base frame 29 that crosses the safety fence 21 from the outer region 25B to the inner region 25A. Left and right columns 31L, 31R (see FIG. 2) are integrally erected on the left and right sides near the position where the base frame 29 crosses the safety fence 21 in the front-rear direction, and the upper part of the left and right columns 31L, 31R. Is provided with a left-right bridge 33. That is, the overall configuration of the main body frame 27 is a gate type.

  The base frame 29 includes an inner region portion 29A located in the inner region 25A and an outer region portion 29B located in the outer region 25B. On the upper surface of the base frame 29, a plurality of guide portions 37A for vertically stacking a plurality of plate-like works and guiding the plurality of work mounting tables 35A which can be mounted in the front-rear direction, and a state where the works W are erected. A plurality of guide portions 37B for guiding the plurality of work mounting tables 35B, which can be mounted at appropriate intervals in the horizontal direction, in the front-rear direction, are provided in parallel in the left-right direction. Each guide portion 37A, 37B is provided on the upper surface of the base frame 29 from the inner region 25A to the outer region 25B.

  Therefore, each of the work mounting tables 35A and 35B can be moved and positioned in the inner area 25A, and can be moved and positioned in the outer area 25B. As shown in FIG. 2, a pair of left and right shutters 39L and 39R are individually movable in the left and right directions below the bridge 33 and between the columns 31L and 31R, that is, each of the work mounting tables 35A and 35B. Are provided so as to be capable of individually opening and closing moving passages that move in the front-rear direction.

  The shutters 39L and 39R are individually opened and closed by opening and closing actuators (not shown) such as a fluid pressure cylinder provided in the bridge 33. Therefore, when the shutters 39L and 39R overlap, for example, to the right, the right guide 37A is closed and the left guide 37B is opened. Conversely, when the shutters 39L and 39R are overlapped on the left side, the left guide portion 37B is closed and the right guide portion 37A is opened. When both shutters 39L and 39R are located on the left and right sides without overlapping, all the guide portions 37A and 37B are closed.

  Therefore, when all the guide portions 37A and 37B are closed by the shutters 39L and 39R, communication between the inner region 25A and the outer region 25B is cut off. Therefore, at the time of processing the work W in the inner region 25A, for example, even if an excessive load acts on the mold and a part of the mold is broken and scattered, the safety of the worker can be secured. .

  As already understood, the work mounting tables 35A and 35B can move to the inner area 25A and the outer area 25B on the base frame 29. The shutters 39L and 39R can be closed in a state where the inner region 29A and the outer region 29B are shut off. Therefore, when the work mounting tables 35A and 35B are located in the inner region 29A, the work W on the work mounting tables 35A and 35B can be supplied to the work supply robot 5. The workpiece W is supplied to the plate material processing machine 3 by the workpiece supply robot 5, and the workpiece W can be processed. When the work mounting tables 35A and 35B are located on the outer region 29B on the base frame 29, a new work W to be processed next may be mounted (set) on the work mounting tables 35A and 35B. it can. That is, the work mounting tables 35A and 35B reciprocate between the inner region 29A and the outer region 29B by a reciprocating operation mechanism (not shown) including, for example, a ball screw machine or a linear motor.

  As described above, when setting the work W on the work mounting tables 35A and 35B located in the outer region 29B, measures are taken to confirm whether or not it is safe. That is, open / close detecting means (not shown), such as a reset switch or a proximity switch, for detecting the open / close of the shutters 39L, 39R is provided for each of the shutters 39L, 39R. Therefore, when both of the open / close detecting means are in the ON state, it can be detected that the shutters 39L and 39R are in the closed state. When one of the open / close detecting means is in the ON state and the other open / close detecting means is in the OFF state, it can be detected that the other shutter is in the open state.

  In the base frame 29, left and right side walls 41L and 41R are provided on both left and right sides of the outer region portion 29B. An object enters the left and right side walls 41L and 41R when, for example, an operator's hand moves close to the work mounting tables 35A and 35B located in the outer region 29B of the base frame 29. Is provided with an object detection sensor 43 for detecting as an object. The object detection sensor 43 includes, for example, a light emitter 45A in which a plurality of LEDs are linearly arranged at appropriate intervals, and a light receiver 45B in which a plurality of photodiodes are linearly arranged at appropriate intervals in opposition to the light emitter 45A. It is a configuration provided with. Therefore, if a worker's hand or the like enters between the left and right side walls 41L and 41R, it can be detected as a danger.

  By the way, when setting the work W on the work mounting tables 35A and 35B located in the outer region portion 29B, it is necessary to prevent the object detection sensor 43 from performing a detection operation. Therefore, the object detection sensor 43 is configured to perform ON (valid) and OFF (invalid) operations in connection with the opening and closing operations of the shutters 39L and 39R. That is, when the work W is set on the work mounting tables 35A and 35B located in the outer region 29B, the shutters 39L and 39R are both closed. That is, when the open / close detecting means provided for each of the shutters 39L and 39R detects the closed state of each of the shutters 39L and 39R, and both are in the ON state.

  Therefore, when both of the open / close detection means are in the ON state, an interlock circuit (not shown) that prevents the object detection sensor 43 from performing a detection operation (for example, interrupts the current of the object detection sensor 43) is provided by a control device (not shown). (Not shown). In other words, when either one of the shutters 39L and 39R is in the open state, the object detection sensor 43 is kept in an effective state in which it is turned on. Therefore, when the work W is to be set on the work mounting tables 35A and 35B located in the outer region 29B, if one of the shutters 39L and 39R is in the open state, the object detection sensor 43 is operated by the worker's hand. Intrusion can be detected. As described above, when the object detection sensor 43 detects an object and is turned ON, the danger can be avoided by notifying the danger by the notification means provided in the control device, thereby improving safety. .

  A single work picking device 47 is provided, which can take out the works W on the work mounting tables 35A and 35B located in the inner region portion 29A of the base frame 29 one by one and transfer the work W to the work supply robot 5. More specifically, a guide rail member 49 in the X-axis direction (left-right direction) is horizontally provided on the rear surface (rear surface in the Y-axis direction) of the bridge 33, as shown in FIG. The guide rail member 49 is provided with a guide portion 49G which is long in the left-right direction, and the guide portion 49G is provided with a slider 51 so as to be movable and positioned in the left-right direction.

  In order to move and position the slider 51 in the left-right direction, the slider 51 is provided with a traveling actuator 53 such as a servomotor. A pinion (not shown) rotated by the traveling actuator 53 is engaged with a rack (not shown) provided on the guide rail member 49. Therefore, by controlling the driving of the traveling actuator 53 under the control of the control device, the slider 51 can be moved and positioned in the left-right direction along the guide portion 49G.

  The slider 51 is provided with the base end side of the revolving arm 55 so as to be horizontally rotatable (swingable). A turning actuator 57 such as a servomotor for turning the turning arm 55 is provided at the base end of the turning arm 55. A ball screw spline 59 is provided on the tip side of the turning arm 55. As is known, the ball screw spline 59 has a configuration in which a ball screw and a ball spline are combined. Therefore, as shown in FIG. 5, the turning arm 55 includes a servomotor 61A for rotating a ball screw nut (not shown) in the forward and reverse directions, and a servomotor 61B for rotating a spline outer cylinder (not shown) in the forward and reverse directions. Have been. The ball screw spline 59 is provided with a ball screw spline shaft 63 vertically.

  As is known, in the ball screw spline 59, by controlling the rotation of the servo motors 61A and 61B in relation to each other, the ball screw spline shaft 63 can be moved up and down without rotating, and at the desired position. The vertical movement can be stopped with. Further, the ball screw spline shaft 63 can rotate horizontally at a fixed position without moving up and down.

  The lower end of the ball screw spline shaft 63 is integrally provided with an L-shaped bracket 65 having a horizontal portion 65H and a vertical portion 65V. A rotation actuator 67 such as a servomotor having a horizontal rotation axis (not shown) is mounted on a vertical portion 65V of the bracket 65. A vertical portion of an L-shaped bracket 71 (see FIG. 6) having a work suction portion 69A or a work suction portion 69B (see FIG. 6) capable of sucking a plate-shaped work W is provided on the rotation shaft of the rotation actuator 67. It is detachably mounted.

  The work suction section 69A has a configuration in which a plurality of suction pads (not shown) are provided on the lower surface 69L, and suctions a relatively large plate-shaped work W. The work suction portion 69B is formed in a tubular shape and has a suction pad 73 at a tip end thereof, and corresponds to a relatively small work W. Therefore, the work suction portions 69A and 69B are used by being detached and replaced in accordance with the shape, dimensions, and the like of the work W.

  As already understood, the single workpiece picking device 47 can be freely moved and positioned in the left-right direction along the guide rail member 49 at a position above the inner region portion 29A in the base frame 29. That is, the single workpiece picking device 47 can be positioned at an upper position corresponding to each of the guide portions 37A and 37B in the inner region 29A of the base frame 29.

  Further, since the swivel arm 55 in the single workpiece picking device 47 can be swiveled horizontally, the work suction part 69A provided on the tip side of the swivel arm 55 is connected to the guide parts 37A, 37A of the inner region 29A of the base frame 29. It can be positioned above the work mounting tables 35A and 35B located at 37B.

  By appropriately moving the ball screw spline shaft 63 of the ball screw spline 59 up and down and rotating appropriately horizontally, and rotating and tilting the work suction unit 69A appropriately by the rotation actuator 67, the work suction unit 69A is tilted. Can be directed in a desired direction. In other words, the suction pad provided on the work suction unit 69A can be moved up and down in a desired direction.

  Therefore, even when the work W placed on the work mounting tables 35A and 35B is appropriately inclined or substantially vertical, the work suction unit 69A is moved in accordance with the inclination of the work W or the like. The work W can be inclined, and the work W can be sucked by the suction pad provided in the work suction section 69A. Therefore, for example, it is possible to easily cope with a case where the works W are messyly stacked and the uppermost work W is inclined in an arbitrary direction.

  As described above, when one workpiece W is taken by the single workpiece taking device 47, two pieces of the workpiece W may be taken in close contact with each other. Therefore, a single sheet detector 75 (see FIG. 3 or FIG. 4) is provided on one side in the X-axis direction of the inner region portion 29A in the base frame 29. This single-sheet pick-up detector 75 sandwiches the work W sucked by the work suction portion 69A from above and below, and determines whether or not the thickness of the work W is equal to or greater than a preset thickness of the work W. By detecting, it is detected whether or not one work W has been taken.

  Since the configuration of the single-panel detector 75 is a known configuration, a detailed description of the configuration of the single-panel detector 75 is omitted.

  As described above, when it is detected by the single-sheet pick-up detector 75 that a plurality of pieces of the workpiece W are picked up from the work mounting table 35A by the single-sheet pick-up device 47, the plurality of pieces of the workpiece W Is placed on a separate work mounting table 35A located in the inner area portion 29A. The work W take-up device 47 takes one work W again. When it is detected by the single-sheet pick-up detector 75 that the number of sheets is one, the work W is transferred to the work supply robot 5.

  In the case described above, the work supply robot 5 turns 180 ° from the state shown in FIG. 1, and the work clamp 19 is directed to the work piece taking apparatus 47 side. The workpiece W held by the workpiece picking device 47 is clamped by the workpiece clamp 19, so that the workpiece W is transferred from the workpiece picking device 47 to the workpiece supply robot 5.

  The work W taken out by the work take-up device 47 is temporarily held in a work holding section (not shown) provided at a predetermined position. The work W held by the work holding unit can be clamped by the work clamp 19 of the work supply robot 5.

  As understood from the above description, according to the present embodiment, the work mounting tables 35A and 35B provided in the work supply device 23 are connected to the inner region 29A and the outer region 29B of the base frame 29 in the work supply device 23. Can reciprocate between The moving passage in which the work mounting tables 35A and 35B reciprocate can be closed by the shutters 39L and 39R.

  Therefore, the workpiece W can be supplied without temporarily stopping the plate processing machine 3. Further, since the communication between the inner region portion 29A and the outer region portion 29B can be blocked (closed) by the shutters 39L and 39R, safety can be improved.

  Further, according to the present embodiment, when setting the work W on the work mounting tables 35A and 35B in the outer region portion 29B, when the shutters 39L and 39R are in the open state, the danger is detected by the object detection sensor 43. And safety can be improved.

  Further, the work suction portions 69A and 69B for sucking the work W in the single work picking device 47 are provided rotatably about a vertical axis and a horizontal axis, and are provided so as to be movable in a horizontal direction. Have been. Therefore, even if the works W mounted on the work mounting tables 35A and 35B are randomly stacked and the inclination direction of the work W is an arbitrary direction, the work suction portions 69A and 69A correspond to the inclination of the work W. 69B can be tilted. Accordingly, even when the works W are randomly stacked, it is possible to easily cope with the case.

  Note that the present invention is not limited to the above-described embodiment, and can be embodied in other forms by appropriately changing. In other words, the work W on the work mounting tables 35A and 35B located in the inner region portion 29A of the base frame 29 is directly clamped by the work clamp 19 of the work supply robot 5 without the work piece taking device 47. Is also possible.

DESCRIPTION OF SYMBOLS 1 Sheet material processing system 3 Sheet material processing machine 5 Work supply robot 21 Safety fence 23 Work supply device 25A Inside area 25B Outside area 27 Main frame 29 Base frame 29A Inside area part 29B Outside area part 35A, 35B Work mounting table 37A, 37B Guide part 39L, 39R Shutter 43 Object detection sensor 45A Projector 45B Receiver 47 Work piece take-up device 49 Guide rail member 51 Slider 55 Swivel arm 59 Ball screw spline 63 Ball screw spline shaft 65 L-shaped bracket 69A, 69B Work suction part 73 Suction Pad 75 Single-panel detector

The present invention includes a work supply robot provided on a front side of a plate material processing machine and supplying a plate-shaped work to the plate material processing machine, and a safety fence provided around an operation area of the work supply robot. A work supply device that is used in the plate material processing system, and supplies a work to the work supply robot, and a base frame provided from the inside area to the outside area of the safety fence at a front side of the work supply robot, A work mounting table provided on the base frame so as to be movable in the front-rear direction between the inner region and the outer region, and a plurality of works, and a moving passage for moving the work mounting table in the front-rear direction A work suction part capable of sucking the work freely, and being transferable to the work supply robot, and being located in the inner area of the base frame. A work picking device for picking up a work on the work mounting table, and a work picking device for detecting whether or not the work sucked by the work suction portion of the work picking device is a single work. A detector and a plurality of works are mounted on separate work mounting tables when the single work detector detects that the plurality of works sucked by the work suction unit is plural. Is composed

According to the present invention, the work mounting table is configured to reciprocate between the inner area on the operation area side of the work supply robot and the outer area on the opposite side .

Therefore, only the work mounting table invades the operation area of the work supply robot, and there is nothing that interferes with the work supply robot, thereby improving the safety of the worker.

The base frame 29 includes an inner region portion 29A located in the inner region 25A and an outer region portion 29B located in the outer region 25B. On the upper surface of the base frame 29, a plurality of guide portions 37A for vertically stacking a plurality of plate-like works and vertically guiding a plurality of work mounts 35A which can be mounted thereon, and a state where the work W is set up. A plurality of guide portions 37B for guiding the plurality of work mounting tables 35B, which can be mounted at appropriate intervals in the horizontal direction, in the front-rear direction, are provided in parallel in the left-right direction. Each guide portion 37A, 37B is provided on the upper surface of the base frame 29 from the inner region 25A to the outer region 25B.
Therefore, each of the work mounting tables 35A and 35B can be moved and positioned in the inner area 25A, and can be moved and positioned in the outer area 25B. As shown in FIG. 2, a pair of left and right shutters 39L and 39R are individually movable in the left and right directions below the bridge 33 and between the columns 31L and 31R, that is, each of the work mounting tables 35A and 35B. Are provided so as to be capable of individually opening and closing moving passages MP moving in the front-back direction.

As understood from the above description, according to the present embodiment, the work mounting tables 35A and 35B provided in the work supply device 23 are connected to the inner region 29A and the outer region 29B of the base frame 29 in the work supply device 23. Can reciprocate between The moving passage MP in which the work mounting tables 35A and 35B reciprocate can be closed by the shutters 39L and 39R.

Claims (5)

  A plate material processing system including a work supply robot that supplies a work to the plate material processing machine in front of a plate material processing machine that processes a plate-shaped work, and including a safety fence around an operation area of the work supply robot. Wherein the main body frame arranged in the same row as the safety fence includes a work mounting table movable to an inner area corresponding to the operation area and an outer area opposite to the operation area. A work supply device, comprising: a shutter that can open and close a movement passage of the work mounting table that moves between the inside area and the outside area.   2. The work supply device according to claim 1, wherein the outer area is an area on which a work is mounted on the work mounting table, and the outer area includes an object detection sensor that detects an intrusion of an object. A work supply device.   3. The work supply device according to claim 1, wherein the work on the work mounting table moved to the inner area is lifted by the main body frame, and the work is transferred to the work supply robot. A work supply device, comprising:   4. The work supply device according to claim 3, wherein the single work picking device includes a work suction unit, and the work suction unit is rotatable around a vertical axis and a horizontal axis and in a horizontal direction. A workpiece supply device, which is provided so as to be movable to the workpiece.   A work supply device that sucks a plate-like work stacked on a work mounting table and supplies the work to a plate material processing machine. A work supply device, wherein the work supply unit is provided so as to be rotatable about an axis and the work suction unit is provided so as to be movable in a horizontal direction.

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