JPH04286556A - Workpiece carry-out device - Google Patents

Abstract

PURPOSE:To prevent the lifting of plural workpieces and improve work efficiency. CONSTITUTION:This workpiece carry-out device is a device for taking out the uppermost stage workpiece W1 of a pile body A piece by piece onto a workpiece carry-out base 3 from a workpiece placing base 2 for placing the pile body A formed of piled-up plate like workpieces W. A moving base 4 moved above between the workpiece placing base 2 and the workpiece carry-out base 3 is provided with a kick-off means 5 for forming an exposed part 7 of small length on the upper face of the workpiece W2 following the uppermost stage workpiece W1 by moving the uppermost workpiece W1 of the pile body A in the carry-out direction, a suction means 6 for sucking/lifting the moved uppermost stage workpiece W1, and a pressing means 9 for pressing down the above-mentioned exposed part 7 of the following workpiece 2 at the time of sucking/lifting the workpiece W1 by the suction means 6.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a pressing tool that presses the next workpiece downward when lifting a workpiece with a suction tool, so that the workpieces can be reliably worked one by one from a stack of plate-shaped workpieces. The present invention relates to a workpiece unloading device that can take out a workpiece.

0002

2. Description of the Related Art A workpiece unloading device is used to take out workpieces one by one to a predetermined position from a stack of thin, wide plate-like works attached to the front and back sides of a wall panel, for example.

[0003] Such a workpiece unloading device has conventionally been used, for example, as schematically shown in FIG. The workpiece mounting table is equipped with an unloading table c, and a suction tool d that runs on a rail that straddles the workpiece loading table b and the workpiece unloading table c above it, and picks up and lifts the workpiece w. It consisted of a moving table e that takes out the workpiece from b to a workpiece unloading table c.

[Problem to be Solved by the Invention] However, since each workpiece w in the stacked body a is stacked closely, the workpieces stick to each other, and when the topmost workpiece w1 is lifted, the next workpiece w2 is also lifted together. There are many things that can happen. Such a phenomenon occurs particularly frequently when the workpiece is warped, and as a result, it causes a line stop and lowers the work efficiency, and there is also a risk of the workpiece w2 falling, damaging the workpiece and impairing safety. Inferior.

[0004] In the present invention, the topmost workpiece is moved to a moving table that moves upward between the workpiece loading table on which the workpiece stack is placed and the workpiece unloading table, and a small length of the workpiece is placed on the top surface of the next workpiece. The method is basically equipped with a kicking tool that forms an exposed part and a pressing tool that presses down the exposed part of the next workpiece when adhering and lifting a workpiece, thereby reliably preventing lifting of multiple workpieces. The purpose is to provide a workpiece unloading device that can be used.

[0005]

[Means for Solving the Problems] The present invention provides a workpiece transfer system that takes out the topmost workpieces of each stacked body one by one from a workpiece loading table on which a stacked body of plate-shaped workpieces is placed, to a workpiece unloading table. The apparatus comprises a moving table that moves upward between the workpiece loading table and the workpiece unloading table, and moves the topmost workpiece of the stacked body in the unloading direction, so that the next workpiece after the topmost workpiece is moved. A kicking tool that forms a small length exposed part on the upper surface, a suction tool that attracts and lifts the moved uppermost workpiece, and a suction tool that sucks and lifts the workpiece by the suction tool, and when the workpiece is sucked and lifted, the exposed part of the next workpiece is removed. This workpiece unloading device is characterized by being equipped with a pressing tool for pressing downward.

[0006]

[Operation] By moving the topmost workpiece of the stacked body in the unloading direction to the moving table that moves upward between the workpiece loading table on which the workpiece stack is placed and the workpiece unloading table, the top surface of the next workpiece is a kicking tool that forms a small length of exposed part on the workpiece, a suction tool that attracts and lifts the uppermost work that has been moved, and a press that presses down the exposed part of the next work when adsorbing and lifting the work. Provide the ingredients. Therefore,
By pressing the next workpiece with the pressing tool, when the suction tool lifts the next workpiece, it can be prevented from coming into close contact with the topmost workpiece and being lifted together, ensuring that each workpiece can be taken out one by one. At the same time, line stops caused by lifting multiple workpieces can be eliminated.
Work efficiency and safety can be improved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a workpiece unloading device 1 of the present invention transfers each topmost workpiece W1 of the stacked body A from a workpiece loading table 2 on which a stacked body A of plate-shaped workpieces W is placed to a workpiece unloading table 3. A moving table 4 which is a device for taking out one sheet at a time and moves upward between the workpiece mounting table 2 and the workpiece unloading table 3.
, a kicking tool 5 for moving the uppermost workpiece W1 in the carrying-out direction, a suction tool 6 for sucking and lifting the moved uppermost workpiece W1, and an exposed part 7 of the next workpiece W2 (
2 and 3) is provided with a pressing tool 9 for pressing down.

[0008] The workpiece W is, for example, various thin wide plate-shaped face materials attached to the front and back sides of a wall panel.
A stacked body A formed by stacking the work pieces A is transferred onto the workpiece mounting table 2 using, for example, a belt conveyor.

In this embodiment, the workpiece mounting table 2 has an upper frame 2.
0, a lifting platform 23 having a well-known structure has links 22, 22 combined in an X-shape between a lower frame 21 so as to be openable and closable, and can raise and lower the upper frame 20 by opening and closing the links 22, 22. Further, the lifting table 23 is formed so that the upper frame 20 can be raised intermittently at pitches equal to the thickness of the workpiece W. Note that the workpiece mounting table 2 may be formed by, for example, a belt conveyor that does not move up and down.

The workpiece unloading table 3 is formed by a belt conveyor or the like that conveys the taken out workpiece W to a suitable processing device (not shown), and is located above the workpiece unloading table 3 and the workpiece mounting table 2. A movable table 4 is provided so as to be able to freely reciprocate.

The moving table 4 has a pair of parallel rails 25, 2 that straddle the workpiece loading table 2 and the workpiece unloading table 3 above.
5, and the rail 25,
A pair of cylinders 31, 31 are erected on the upper surface of a rectangular base 30 having wheels 26 running on wheels 25, with rods 31a facing downward. By moving the base 30 by an appropriate drive device (not shown), it can reciprocate between the workpiece mounting table 2 and the workpiece unloading table 3 and can stop above each of them.

Further, at the lower ends of the rods 31a of the cylinders 31, 31 disposed on the base 30, there are parallel frame members 32,
32 is fixed, and a horizontal member 33 perpendicular to the frame member 32 is spanned approximately between the centers of the frame members 32, 32. A guide shaft 34 on which the base 30 is loosely inserted is provided on the upper surface of the horizontal member 33.
is raised vertically. Therefore, the frame members 32, 32 can be moved up and down by the operation of the cylinders 31, 31.

Further, between the frame members 32, 32, a horizontally long rectangular plate member 36 is vertically installed, located on the one direction X side opposite to the workpiece unloading table 3, Stacked body A placed on the workpiece mounting table 2 on the direction X side
A kicking tool 5 is disposed for moving the workpiece W1 on the uppermost stage in the unloading direction, that is, in the other direction Y toward the workpiece unloading table 3.

In this embodiment, the kicking tool 5 rotatably inserts into the rectangular support plates 39, 39 protruding in the one direction
It consists of a horizontal rectangular plate 45 attached to a support shaft 40 installed between the two via links 41, 41, and a pin 46 loosely inserted near the tip of the rectangular plate 45. One of the two links 41, 41 has one end fixed to the support shaft 40, and the other end pivoted to an upright piece 47A rising from the rectangular plate 45. The other link 41 has one end pivotally supported by the support plate 39, and
The other end is pivotally attached to another vertical piece 47B of the rectangular plate 45. As a result, the two links 41, 41 constitute a parallel crank mechanism, and by the operation of a rotary actuator 49 provided at the end of the support shaft 40, for example, the rectangular plate 45 is moved up and down as shown by the dashed line in FIG. It can be moved in the direction.

The pin 46 loosely inserted into the rectangular plate 45 has a head 46A at its upper end to prevent it from falling from the rectangular plate 45, and can be vertically moved upward by pressure from below. The kicking tool 5 is located at the upper position U, as shown by the solid line in FIG.
The lower end of the pin 46 is set to be located near the uppermost workpiece W1 of the stacked body A, and the links 41, 41 are rotated by the operation of the rotation actuator 49 to a lower position D (shown by a dashed line in FIG. 2). ) at pin 4
6 presses the side surface of the uppermost workpiece W1 and moves the workpiece W1 in the other direction Y. Note that while the kicking tool 5 reaches the lower position D from the upper position U, the lower end of the pin 46 comes into contact with the upper surface of the workpiece W2 next to the uppermost workpiece W1, and the pin 46 moves vertically upward. Due to the action of the kicking tool 5, an exposed portion 7 having a small length is formed on the upper surface of the next workpiece W2 on the one direction X side. Note that the ejection tool may be moved in the other direction Y, for example, by the operation of a horizontally disposed cylinder.

Furthermore, the uppermost workpiece W1 moved by the kicking tool 5 is attracted and lifted by a suction tool 6 provided on the moving table 4. In this embodiment, the suction device 6 includes a pair of primary suction devices 50, 50 that hang down from the lower surfaces of the frame members 32, 32 and suction the upper surface end portion of the uppermost workpiece W1 on the one direction X side; Said other direction Y of the adsorber 50
It consists of a secondary suction device 51 located on the side and hanging down from the lower surface of the frame members 32, 32 and capable of suctioning the four corners of the workpiece W1.

The primary suction unit 50 is disposed near the end of the frame member 32 in one direction
is attached to the bottom end. In addition, the secondary adsorption device 51 has a frame material 32.
A suction pad 54 is provided at the tip of the small diameter portion hanging down from the cylinder 31, and the workpiece W1 is suctioned by a vacuum, and the workpiece W1 is lifted by the operation of the cylinder 31. Note that the adsorption force of the primary adsorber 50 is set to be relatively weaker than that of the secondary adsorber 51.

Further, when the uppermost workpiece W1 is sucked and lifted by the suction tool 6, the next workpiece W2 is placed on the movable table 4.
A pressing tool 9 for pressing down the exposed portion 7 is provided. The pressing tool 9 presses the frame members 32, 32 in the one direction
It is formed by cylinders 56, 56 installed downward from the lower surfaces of the side ends. The cylinder 56 has a rod facing downward and is provided with a pressing plate 57 at its tip for pressing the exposed portion 7.

The operation of the workpiece unloading device 1 of this embodiment will be explained below with reference to FIGS. 2 to 7. In the stacked body A placed on the workpiece mounting table 2, the uppermost workpiece W1 is placed in a predetermined position as the workpiece mounting table 2 rises, and the frame material 32 is lowered by the operation of the cylinder 31, as shown in FIG. As shown in , the kicking tool 5 approaches the workpiece W1. After that, the link 4 is rotated by the operation of the rotary actuator 49.
1 and 41 is operated, and the rectangular plate 45 of the kicking tool 5 moves diagonally downward while bringing the pin 46 into contact with the side surface of the workpiece W1, as shown by the dashed line in FIG. The workpiece W1 is moved to the other direction Y side, and a short exposed portion 7 is formed on the upper surface of the next workpiece W2. Note that the kicking tool 5 may be formed so as to push out the uppermost workpiece W1 as the movable table 4 moves in the other direction Y.

Further, as shown in FIG. 3, the primary suction unit 50 of the suction tool 6 is lowered by the operation of the cylinder 52 and suctions the vicinity of the end of the uppermost workpiece W1 on the X side in one direction. As shown, the rod of the cylinder 52 is moved back to lift the end of the workpiece W1. At the same time, the frame material 32
is lowered, and the secondary suction device 51 comes into contact with the upper surface of the workpiece W1 and adsorbs it.

Thereafter, as shown in FIG. 5, the frame member 32 is raised by the operation of the cylinder 31, and the workpiece W1 is lifted up by the secondary suction device 51. Also, during this lifting, the pressing tool 9 presses the next workpiece W2 in the exposed portion 7 by the operation of the cylinder 56, thereby preventing the next workpiece W2 from coming into close contact with the uppermost workpiece W1 and being lifted together. do. Further, the primary adsorber 50 has a cylinder 52.
The rod is further retreated and separated from the workpiece W1, and the frame member 32 is further raised. Further, since the cylinder 56 of the pressing tool 9 is biased so as to extend its rod downward, as shown in FIG.
The next work W2 is continued to be pressed until the work W2 is completely separated from the next work W2. After that, as shown in Figure 7,
When the workpiece W1 is completely lifted up, the pressing tool 9 is also separated from the next workpiece W2. Furthermore, the frame material 32 continues to rise, and after this rise stops, the moving platform 4 moves to the rails 25, 25.
The workpiece W1 is placed on the workpiece unloading table 3. During this time, the workpiece mounting table 2 is raised by the thickness of the workpiece W to prepare for taking out the next workpiece W2.

As described above, in this embodiment, the suction device 6 is a secondary suction device 51 that suctions and lifts the workpiece W1 on the uppermost stage.
In addition, a primary suction device 50 that lifts the end of the workpiece W1 in advance
Therefore, the suction of the secondary suction device 51 can be performed while reducing the transmission of vibrations caused by the lifting of the workpiece mounting table 2 to the workpiece W1, thereby making the suction more reliable.

Furthermore, since the pressing tool 9 presses the next workpiece W2, it is possible to completely prevent a plurality of workpieces from being lifted up, thereby improving work efficiency.

[0024]

[Effects of the Invention] As mentioned above, the workpiece unloading device of the present invention has the following features:
The present invention includes a kicking tool for moving the uppermost workpiece in the unloading direction and forming a small exposed portion on the upper surface of the next workpiece, and a pressing tool for pressing the exposed portion. Therefore, it is possible to prevent the next workpiece from coming into close contact with each other due to warping of the workpiece and lifting a plurality of workpieces, thereby improving work efficiency and safety.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a workpiece unloading device of the present invention.

FIG. 2 is an enlarged cross-sectional view showing the action of the kicking tool.

FIG. 3 is a front view showing the operation of the workpiece unloading device.

FIG. 4 is a front view showing the operation of the workpiece unloading device.

FIG. 5 is a front view showing the operation of the workpiece unloading device.

FIG. 6 is a front view showing the operation of the workpiece unloading device.

FIG. 7 is a front view showing the operation of the workpiece unloading device.

FIG. 8 is a front view illustrating a conventional technique.

[Explanation of symbols]

2 Work placement table 3 Workpiece unloading table 4. Moving platform 5 Kicking tool 6 Suction tool 7 Exposed part 9 Pressing tool A Stacked body W Work W1 Top workpiece W2 Next work

Claims (1)

[Claims] 1. A workpiece carrying-out device that takes out each topmost workpiece of a stacked body one by one from a workpiece loading table on which a stacked body of plate-shaped works is placed, to a workpiece carrying-out table,
A moving table that moves upward between the workpiece mounting table and the workpiece unloading table moves the topmost workpiece of the stacked body in the unloading direction, thereby placing a small length on the upper surface of the next workpiece after the topmost workpiece. a kicking tool that forms an exposed portion of the work, a suction tool that attracts and lifts the moved uppermost workpiece, and a pressure that presses down the exposed portion of the next workpiece when the workpiece is suctioned and lifted by the suction tool. A workpiece unloading device characterized by being equipped with a tool.