JP2003039127A - Double-plate overlap detector of destack device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double-plate overlap detector of a destack device capable of easily adjusting the detecting position as well as adapting the double-plate overlap detector of the destack device to various blank stock. SOLUTION: In the double-plate overlap detector of the destack device which supplies a blank stock to a press machine, a transportation means 101 which movably shapes a double-plate overlap detecting means 200, and an end section detecting means 300 to detect the end section of the blank stock are provided and a position adjusting and controlling means which suspends driving of the transportation means in the position where the end section detecting means detects the end section of the blank stock, while transporting and adjusting the double-plate detecting means, is provided.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a destacking apparatus for supplying a blank material to a press machine (particularly, a transfer press), and more particularly, to detecting the overlap of blank materials. 2. Description of the Related Art A destacking apparatus for supplying a blank material to a press machine such as a transfer press has been conventionally provided. A destacking device (material supply device) disclosed in Utility Model Registration Publication No. 2567408 dispenses a blank material adsorbed on the lower surface of a conveyor belt from a lower surface of the conveyor belt by a two-sheet discharging stage and transfers the blank material to an upper surface of a feed carrier. , A destacking device for transporting the feed carrier to an idle stage.
In addition, a two-sheet detector (sensor) is provided between the destacking stage and the two-sheet discharging stage, and when the overlap of the blank material is detected (two sheets are detected), the feed carrier is kept on standby in the idle stage. deep. Then, the overlapped blank material separated and dropped from the lower surface of the conveyor belt is dropped and discharged to the chute as it is. [0003] In the above-described conventional destacking apparatus, since two detectors are fixed, it may not be used for transporting a deformed blank material. In other words, when the blank is not a simple rectangular or circular blank (for example, a U-shape), even if there is a blank between the two detectors, there is a space or the like in the blank, so that the blank is outside the detection range of the sensor. It may be. As described above, the two-sheet detection device of the conventional destacking device has a problem that it cannot cope with the processing of various types of blank materials that has been increasing in recent years. Accordingly, there has been provided a destacking device in which the two-sheet detecting device is formed to be movable and the position of the two-sheet detecting device can be adjusted by a button operation.
The position must be adjusted so that the sheets can be detected, and the setup work becomes very complicated and time-consuming. According to a first aspect of the present invention, there is provided a two-sheet detecting device of a destacking device for supplying a blank material to a press machine, wherein two sheet detecting means for detecting overlap of the blank material, End detecting means provided to detect an end of a blank material and to detect a position at which the end of the blank material is detected by the two-sheet detecting means; and the two-sheet detecting means Moving means formed so as to be movable in the feeding direction while holding the end means and the end detecting means, and position adjustment for stopping the driving of the moving means when the end detecting means detects the end of the blank material. And a control unit. According to the first aspect of the present invention, the two sheet detecting means for detecting the overlap of the blank material and the end detecting means for detecting the end of the blank material are formed so as to be movable by using a motor as a driving source, and the moving means is provided. In the operation, the motor is stopped when the end detecting means detects the end of the blank material.
Thereby, the position of the two-sheet detecting means can be adjusted in accordance with the shape of the blank material so that the two-sheet detecting means can surely detect the overlap of the blank material, and the detection position of the end of the blank material, namely, 2 The movement of the two-sheet detecting means can be stopped at the position where the sheet can be detected. Therefore, the two-sheet detecting means can function regardless of the shape of the blank material, so that it is possible to cope with various types of blank materials, and the position adjustment can be automated, so that the time required for the setup work is reduced. be able to. An embodiment of the present invention will be described below. FIG. 1 is an overall side view of the destack device 1.
The destacking device 1 is a device that transports the blank material W loaded on the magazine 2 into the area of the press machine 3. In FIG. 1, a plurality of magazines 2 are T
It is formed so as to be movable on a magazine rail 4 formed in a letter shape. On the other hand, a lifter device 6 is provided below the space of the destack stage 5, and the blank material W can be pushed upward by a lifter cylinder 7 and a lifter rod 8 driven by a hydraulic device (not shown). The pair of magnetic separators 9 generate a magnetic field between the magnetic separators 9 to separate the pushed-up blanks W one by one. Above the magnetic separator 9 (destack stage 5), a magnet conveyor 10 is provided. The belt 12 of the magnet conveyor 10 is driven by a drive mechanism 11, and a magnet 13 is provided on the upper surface of the lower belt 12. Note that a plurality of magnet conveyors 10 are provided at regular intervals in a direction perpendicular to the feed direction. Then, between the magnet conveyors 10,
A destack cylinder 14 is provided. The destack cylinder 14 is provided such that the cylinder part 15 is positioned upward and the rod part 15 is positioned downward, and the rod part 15 performs a vertical movement. Further, a suction cup 16 is provided at the tip of the rod portion 15. When the rod 15 (the suction cup 16) is at the upper limit, the lower surface of the suction cup 16 is located slightly above the lower surface of the belt 12. Further, the screw mechanism 1 is attached to the destack cylinder 14.
7 (nut 17A, screw rod 17B) is provided, and the screw rod 17B is connected to the motor 18. This is for position adjustment in the feed direction. Note that a plurality of destack cylinders 14 are provided between the magnet belts 10. Here, FIG. 2 is a top view showing the positional relationship between the magnet belt 10 and the destack cylinder 14. FIG. In the case of this embodiment, six magnet belts 10 are provided,
Nine destack cylinders 14 are provided. Further, the destacking device 1 shown in FIG.
A two-sheet detecting device 19 for detecting whether or not the blank materials W transferred to the magnet conveyor 10 overlap each other, and a chute 20 for receiving the overlapping blank materials W are provided. At the end of the magnet belt 10 on the press side, a cylinder device 21 for separating the blank material W from the magnet conveyor 10 is provided. The cylinder device 21 includes a cylinder portion 22
And the rod portion 23 is located below,
A suction cup 24 is provided at the tip of the rod portion 23. Similarly to the destack cylinder 14, a plurality of cylinder devices 21 are provided between the magnet belts 10. When the rod portion 23 (suction cup 24) is at the upper limit, the lower surface of the suction cup 24 is located slightly above the lower surface of the belt 12. The operation of the destack device 1 in this embodiment will be described below. When the blank material W is placed on the magazine 2 in advance, the selected magazine 2 is moved to and placed on the destack stage 5 according to a program preset in a control device (not shown). Then, the lifter rod 8 of the lifter device 6 pushes up the blank material W between the magnetic separators 9. The rod portion 15 (suction cup 16) of the destack cylinder 14 located at the upper limit is lowered, and the blank material W separated by the magnetic separator 9 is suctioned and held and is raised. When the rod portion 15 (suction cup 16) returns to the upper limit, the blank material W is sucked to the lower surface of the magnet conveyor 10 (belt 12). The blank material W thus transferred to the magnet conveyor 10 is intermittently sent in the feed direction in synchronization with the operation of the press machine 3 and the transfer device (not shown). In the meantime,
The overlapping of the blanks W is checked by the two-sheet detecting device 19, and the blanks W detected as overlapping are shot 2
Passed to 0. The blank material W for which no overlap is detected by the two-sheet detecting device 19 is continuously sent intermittently, and is separated from the magnet conveyor 10 by the cylinder device 21 at the end of the magnet conveyor 10. Cylinder device 2
Although not shown, an idle stage and a shuttle feeder are provided in the space P below the blank 1, and the blank material W is transferred to a transfer device of the press machine 3, and press work is performed by the press machine 3. When the blank material W disappears from the magazine 2, it is automatically replaced with the magazine 2 set up outside. Here, the two-sheet detecting device 19, which is the gist of the present invention, will be described in detail with reference to the detailed view of FIG. In the two-sheet detection device 19, a motor 101 is fixed to a frame or the like of the destack device 1. The motor 101 is provided with a screw 102, and the screw 102 rotates by driving the motor 101. At the end of the screw 102 on the side opposite to the motor 101, a support table 103 is fixedly mounted on a frame or the like of the destack device 1, and rotatably supports the screw 102. On the other hand, the two-sheet detecting device 19 is provided with a bracket 104 having a hook-like shape and an upper flat portion 104A when viewed from the left and right directions in FIG. , With the screw 102. A base plate 106 is fixed below the bracket 104. On the base plate 106, two sheet detecting means 200 for detecting the overlap of the blank material and an end detecting means 300 for detecting the end of the blank material are fixed (held). In the present embodiment, the edge detecting means 300 is formed by a proximity switch 301 provided on the upper right of the roller 203 on the base plate 106. An L-shaped arm 201 is provided in the two-sheet detecting means 200, and a drive shaft of a small motor (not shown) is engaged with a central portion 201A of the arm 201. The arm 201 is located at the center 201
A and can be rotated by driving a small motor (two-dot chain line of the arm 201 in FIG. 3). Meanwhile, 2
The sheet detecting means 200 is provided with a limit switch 202, and a tip 202 A of the limit switch 202 is formed so as to be in contact with the upper roller 201 B above the arm 202. The lower roller 201C below the arm 201 is arranged so as to be able to contact the roller 203 on the base plate 106. Also, FIG.
In the state indicated by the two-dot chain line 1, the lower side of the lower roller 201C is in contact with the locking member 204 fixed on the base plate 106, and the rotation of the arm 201 is restricted. The two-sheet detecting operation of the two-sheet detecting device 19 is performed in such a manner that the blank W
Is clamped by the lower roller 201C and the roller 203 when the intermittent conveyance is temporarily stopped. When there is only one blank material W, the upper roller 201B is connected to the limit switch 20.
The limit switch 202 is turned ON by pressing the second end 202A. However, when there are two or more blank materials W,
The tip 202A of the limit switch 202 cannot be pressed, and the limit switch 202 does not turn on. The overlapped blank material W is separated and dropped from the belt 12 by a separating device (not shown) operated by a signal of the limit switch 202, and is discharged to the chute 20. After the completion of the two-sheet detection operation, the arm 202 turns right until it is regulated by the locking member 204 (the state of the two-dot chain line of the arm 201 in FIG. 3). In this position, arm 20
Since the blank 2 and the blank W do not interfere with each other, the blank W can be transported by driving the magnet conveyor 10 (belt 12). Here, the position where the blank material W is clamped by the two-sheet detecting means 200 needs to be different depending on the shape of the blank material W. Therefore, it is necessary to adjust the position of the two-sheet detecting means. The procedure of the position adjustment is as follows. First, the blank material W is transported to a position above the chute 20 by the sole operation of the destacking apparatus 1 and the base plate 106 (two sheet detecting means 200, end detecting means 300) is previously set.
Is moved to the retreat end (the left direction in FIG. 3). Here, the position adjustment control means (not shown) is operated, and the base plate 106 (two-sheet detection means 200, end detection means 300) is advanced (to the right in FIG. 3) so that the end of the blank W is detected by the end detection means. When the vehicle enters a detectable range below 300 (proximity switch 301), the motor 101 is stopped. In this manner, the position at which the two-sheet detecting means 200 clamps (detects) the blank material W can be automatically adjusted. The end detecting means 300 (proximity switch 3)
The position of 01) is adjusted in advance so that the two-sheet detecting means can clamp the blank material W at a position where the end of the blank material W is detected in advance. In this embodiment, the motor 101 having a screw mechanism and the like are used as moving means.
0, the end detecting means 300) can be moved.
Further, the detection devices of the two-sheet detection means 200 and the end detection means 300 are not limited to limit switches and proximity switches. According to the first aspect of the present invention, two sheets can be detected according to various shapes of the blank material, so that it is possible to provide a two-sheet detecting apparatus suitable for various kinds of production. it can. Further, since the position adjustment of the two-sheet detecting means can be automatically performed, the time required for the setup work accompanying the change of the blank material can be reduced, and the production efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a destacking device to which the present invention is applied. FIG. 2 is a detailed side view of a two-sheet detecting device of the present invention. 2 ... Magazine, 3 ... Press machine, 4 ... Magazine rail, 5 ... Destack stage,
6 Lifter device, 7 Lifter cylinder, 8 Lifter rod, 9 Magnetic separator, 10 Magnet conveyor, 11
... Driving mechanism, 12 ... Belt, 13 ... Magnet, 14
... Destack cylinder, 15 ... Cylinder part, 15 ... Rod part, 16 ... Suction cup, 17 ... Screw mechanism, 18 ... Motor, 19 ... Two-sheet detector, 20 ... Chute, 21 ... Cylinder device, 22 ... Cylinder part, 23 ... rod part, 24
... Suction cup, 101 ... Motor, 102 ... Screw,
103: support base, 104: bracket, 105: nut, 106: base plate, 200: two-sheet detecting means,
201 ... arm, 202 ... limit switch, 203 ...
Roller 204, locking member 300, end detecting means 3,
01 ... Proximity switch

Claims (1)

Claims: 1. A two-sheet detecting device of a destacking device for supplying a blank material to a press machine, wherein two sheet detecting means for detecting overlap of the blank material and an end of the blank material are detected. And an edge detecting means provided so that the two-sheet detecting means can detect a position at which an edge of the blank material is detected by the two-sheet detecting means; and the two-sheet detecting means and the edge detecting means. Holding and moving means formed so as to be movable in the feeding direction, and position adjustment control means for stopping driving of the moving means when the end detecting means detects the end of the blank material, Characteristic two-stack detector.