JPH09315601A - Method and device for taking out sheet-like articles overlapping sashimi - Google Patents

Abstract

(57) [Summary] [Solution] A plurality of sheet-like articles A and A are fed on a conveying device 1 so as to overlap each other in a sashimi state, and a suction cup 2 is made to act on them. Then, this suction cup 2 is raised while drawing an approximate cycloid curve. [Effect] The sheet-like article A is lifted by the suction cup 2 that rises while drawing an approximate cycloid curve. Therefore,
Even if the articles to be handled are relatively thin ones that tend to cause the problem of taking two sheets, they can be reliably lifted one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for taking out sheet-like articles which are arranged so as to partially overlap each other as in the case of assorting sashimi and are overlapped in a so-called sashimi state.

[0002]

2. Description of the Related Art For example, in order to automatically and efficiently take out paperboard and other sheet-like articles by a suction cup, a large number of sheet-like articles are stacked and sequentially taken out one by one from the upper side or the lower side. The most common way is to go. Then, the suction cup in this case is simply moved linearly, or is simply moved so as to draw an arc locus.

[0003]

However, depending on the sheet-like article to be handled, it is often the case that the suction cups are lifted up to two or more at the same time just by operating in this way. Such a situation is likely to occur in the paper quality of the sheet-like article and the sheet-like article having the property of causing friction on the surface. Therefore, if it is possible to give the sucker a motion such as turning over the sheet-like article to be lifted,
The above situation can be avoided.

On the other hand, when a sheet-shaped article such as a booklet having different thicknesses on both sides is taken out by a suction cup, when these are stacked in a magazine or the like, the difference in thickness is sequentially accumulated and the articles are neatly stored in the magazine. Therefore, it must be said that it is unsuitable as a method for treating such articles. In such a sheet-like article, it is unlikely that two or more sheets will be picked up at the same time, but as described above, they cannot be simply stacked, and it is necessary to devise a form for supplying them. Therefore,
It is better to place such sheet-like articles so that they partially overlap each other, as in the case of assorting sashimi, and take them out sequentially from the front one.

As described above, there is no problem in stacking, but a relatively thin sheet-like article which easily causes a problem of taking two sheets, and conversely, a problem of taking two sheets is less likely to occur, but there is a problem in stacking. When taking out the sheet-shaped articles one by one, it is necessary to provide a taking-out method and an apparatus that can eliminate the respective drawbacks. Such a problem is that while feeding the sheet-like articles to be lifted so that the parts overlap each other as in the case of assorting sashimi, the movement of turning over to the leading one, that is, while drawing an approximate cycloid curve This can be achieved by acting on a suction cup with a rising movement. The present invention makes it possible to supply not only a comparatively thin sheet-like article which is apt to cause a problem of double-cutting but also various sheet-like articles as if they are overlapped in a sashimi-like manner, and at the beginning thereof. Various sheet-shaped articles can be sequentially and automatically taken out efficiently by applying a suction cup that moves upward while drawing an approximate cycloid curve.

[0006]

In order to achieve the above object, according to the present invention, a plurality of sheet-like articles A, A are supplied so as to overlap each other in a sashimi state, and the leading sheet-like article A is supplied.
The suction cup 2 is made to act on and the suction cup 2 is raised while drawing an approximate cycloid curve. By doing so, the suction cup 2 descends toward the leading one of the sheet-shaped articles A, A which are overlapped in a sashimi-like state, and the suction force of the suction sucks the leading sheet-shaped article A, and the sheet-shaped articles A are sequentially lifted. At this time, since the suction cup 2 draws an approximate cycloid curve, the sheet-like article A being lifted is lifted so as to be flipped over, not simply lifted. Therefore, even a relatively thin sheet-like article, which tends to cause the problem of taking two sheets, can be reliably lifted one by one.

Further, the sheet-like article take-out device of the present invention comprises a conveying device 1 for feeding a plurality of sheet-like articles A, A as if they were sashimi-like, and sheet-like articles A, A overlapping sashimi-like. Sucker 2 that lifts the top sheet-like articles A one by one, and this sucker 2 when rising
And a mechanism C for drawing an approximate cycloid curve. The plurality of sheet-shaped articles A, A are supplied by the transporting device 1 as if they were piled up like sashimi. Then, the suction cup 2 acts toward the leading one of the sheet-shaped articles A, A overlapping in the sashimi state, and the leading sheet-shaped article A is held by its suction force. At this moment, the mechanism C that causes the suction cup 2 to draw an approximate cycloid curve is activated during the ascent. Then, the suction cups 2 are sequentially lifted while drawing an approximate cycloid curve, so that the sheet-like article A being lifted is lifted so as to be flipped over, not simply lifted. Therefore, even a relatively thin sheet-like article, which tends to cause the problem of taking two sheets, can be reliably lifted one by one.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a schematic front view showing an example of a device for taking out a sheet-shaped article. In FIG. 1, reference numeral 1 is a conveying device for feeding a plurality of sheet-shaped articles A, A as if they were overlapped in a sashimi-like manner, and at least a plurality of sheet-like articles A, A which are overlapped in a sashimi-like manner are not collapsed. A holder whose rear end is inclined forward and downward
1a, and at least the front end portion is held by the stopper 1b. FIG. 10 shows the state in an enlarged manner. Further, in FIG. 1, reference numeral 2 is a suction cup, and as shown in detail in FIG. 2, this suction cup 2 is located laterally from a lever 2c which can be swung about a shaft 2b with respect to a slide block 2a (left in FIG. 2). It is located below the tip of the mounting arm 2d that is extended to the direction). By doing so, the suction cup 2 can be positioned on the center line of the transfer device 1 as shown in FIG. Then, a block 3 appearing in an L shape in FIG. 1 is arranged so as to be able to swing around a shaft 3a, and a guide rod 3b is extended from the block 3 toward the front which is the transport direction of the transport device 1. The slide block 2a is slidably attached to the guide rod 3b.

On the other hand, a mechanism B that simply moves the suction cup 2 up and down, a mechanism C that draws an approximate cycloid curve on the suction cup 2 while ascending, and a mechanism D that moves the suction cup 2 back and forth are associated with the suction cup 2. Each is equipped. As an example of a mechanism B for simply moving the suction cup 2 up and down, as shown in FIGS. 1 to 4, the block 3 and a lever 5 which can be rotated about a shaft 4 are connected by a connecting rod 6, and the lever 5 By engaging the cam follower 5a with the cam plate 8 which rotates about the shaft 7 as shown in FIG.
b, the slide block 2a, etc. together with the block 3 shown in FIG.
Another example is a case of swinging about the shaft 3a as shown by the chain line in FIG.

As an example of a mechanism C for drawing the approximate cycloid curve on the suction cup 2 during the ascent, a substantially V-shaped lever 9 is fixed to the shaft 3a of the block 3 as shown in FIGS. , One end of the lever 9 and a lever 10 which can rotate about the shaft 4 are connected by a connecting rod 11,
The cam follower 10a of 10 is engaged with the cam plate 12 which rotates about the shaft 7 as shown in FIG.
As shown in FIG. 4, the other end of the lever and a lever 2c that can be swung about the shaft 2b with respect to the slide block 2a are connected to each other as shown in FIG.
4 and the tip of the lever 2e attached to the shaft 2b and the tip of the mounting arm 2f attached to the guide rod 3b and appearing in an inverted L shape in FIG. 3 are connected by a connecting link 2g in FIG. The case can be mentioned. By the link mechanism composed of this lever 2e and the connecting link 2g,
When the suction cup 2 rises, an approximate cycloid curve can be drawn.

As an example of the mechanism D for moving the suction cup 2 back and forth, the tip of the lever 14 rotatably attached to the shaft 4 is pivotally attached to the shaft 3a of the block 3 and the cam follower 14a of the lever 14 is attached. As shown in FIG. 2, by engaging with a cam plate 15 that rotates about a shaft 7, the lever 14 that supports the block 3 is swung about the shaft 4 to move the block 3 to the guide rod 3b. The case of moving back and forth together with the mounting block 2a can be mentioned. In addition,
As shown in FIGS. 1 and 2, the shaft 7 can be rotated in the same direction by driving a motor 16. In the other drawings, reference numeral 17 denotes a take-out roller arranged in a pair of upper and lower sides on the downstream side of the conveying device 1, one set at a time, and one sheet-like article A taken out by the suction cup 2.
Is a pair of upper and lower take-out rollers arranged on the left and right
By the rotation of 17, 17, 17 and 17, it is sandwiched between them and sent forward.

Next, a more detailed description will be given of how a plurality of sheet-shaped articles are sequentially taken out from the top by using the sheet-shaped article take-out device illustrated above. As shown in FIG. 10, a plurality of sheet-shaped articles A and A are supplied by the conveying device 1 so as to overlap each other in a sashimi shape, and the leading edge of the leading sheet-shaped article A is held by a stopper 1b.
First, the shaft 16 is rotated in the same direction by driving the motor 16. Then, the cam plate 8 attached to this rotates, and the lever 5 engaged with this rotates from the position of the solid line in FIG. 3 to the counterclockwise direction from the position of the solid line in FIG. Rotate. This rotation is transmitted to the block 3 via the connecting rod 6, and the block 3 is guided by the guide rod 3
b, slide block 2a, etc. centering on shaft 3a
It swings from the position indicated by the solid line in FIG. Therefore, the suction cup 2 located below the tip of the mounting arm 2d extending laterally (left in FIG. 2) from the lever 2c that can be swung about the shaft 2b with respect to the slide block 2a is shown by the solid line in FIG. Of the sheet-like articles A, A which are made to descend from the position shown in FIG. The state before the lowering of the suction cup 2 is shown in Fig. 7 (a), and the state after the lowering is shown in Fig. 7 (b). Next, when the lever 5 is slightly rotated about the shaft 4 in the opposite direction (clockwise direction in FIG. 3) to that in the previous case,
The block 3 swings slightly with the guide rod 3b, the slide block 2a, etc. around the shaft 3a in the opposite direction to the previous case, and the suction force of the suction cup 2 tends to lift the leading sheet-like article A. [See FIG. 7 (c)]. By further rotating the lever 5 around the shaft 4 in the clockwise direction in FIG. 3, the suction cup 2 can be sequentially raised together with the block 3, the guide rod 3b, the slide block 2a and the like.

During this process, the lever 10 engaged with the cam plate 12 rotating about the shaft 7 is moved from the position of the solid line of FIG. Rotate. This rotation is transmitted to the lever 9 via the connecting rod 11, and the lever 9 rotates about the shaft 3a in the clockwise direction from the position shown by the solid line in FIG. Then, the slide block 2a slides along the guide rod 3b together with the lever 2c connected to the lever 9 by the connecting rod 13. The positions of the lever 2c before and after the slide block 2a slides are shown by the one-dot chain line and the two-dot chain line in FIG. Along with this movement of the slide block 2a, the link mechanism constituted by the lever 2c on the slide block 2a side and the connecting link 2g on the tip side of the inverted L-shaped mounting arm 2f is as shown by the alternate long and short dash line in FIG. Is displaced to. Due to this displacement, the suction cup 2 located below the tip of the mounting arm 2d extending laterally (leftward in FIG. 2) from the lever 2c is tilted as shown in FIG. 7 (d). This displacement of the suction cup 2 by the link mechanism is performed during the lifting of the suction cup 2 (described above). Therefore, the suction cup 2 is raised while drawing a locus as shown in FIG. By the way, the locus shown in FIG. 9 is an approximate cycloid curve, and the approximate cycloid curve can be drawn on this while the suction cup 2 is rising. In this way, the suction cup 2 is raised while drawing an approximate cycloid curve, and the sheet-like article A being lifted by the suction cup 2 is not simply lifted but is lifted so as to be turned. In this case, the sheet-like article A
Is relatively thin such as a label, only a part of the gap a is formed between the sheet-like article A being lifted by the suction cup 2 and the next sheet-like article A, and the other part is still overlapping. It will be in the state [see FIG. 7 (e)]. Therefore, even a relatively thin sheet-like article, which tends to cause the problem of taking two sheets, can be reliably lifted one by one.

Next, the lever 9 is centered around the shaft 3a as shown in FIG.
5 is rotated counterclockwise from the position indicated by the chain line to the position indicated by the solid line in FIG. Then, the slide block 2a slides along the guide rod 3b in the opposite direction to the previous case, and the sucker 2 is in the state shown in FIG. 7 (d) by the link mechanism composed of the lever 2e and the connecting link 2g. To the state shown in Fig. 7 (e). Then, the cam plate 15 which rotates about the shaft 7
The lever 14 engaged therewith is rotated from the position shown by the solid line in FIG. 5 as shown by the chain line in FIG. Then
The block 3 is advanced together with the guide rod 3b, the slide block 2a and the like from the position shown by the solid line in FIG. 5 to the position shown by the alternate long and short dash line in FIG. 5, and the lever 2c is also moved from the position shown by the alternate long and short dash line in FIG. The suction cup 2 is also moved forward. The position of the suction cup 2 in this case is the position shown in FIG. 7 (f). At this time, the lever 5 engaged with the cam plate 8 which rotates about the shaft 7 is rotated to
The position indicated by the chain line is rotated as shown by the solid line in FIGS. Then, the block 3 is slightly raised together with the guide rod 3b, the slide block 2a, etc. from the position shown by the chain double-dashed line in FIG. 5 to the position shown by the solid line in FIG. This position is the highest point of the suction cup 2, and the leading sheet-like article A is lifted to this position by the suction force of the suction cup 2 (FIG. 7 (g)). Then, the sheet-like article A is sandwiched by the take-out rollers 17, 17, 17, 17 arranged in pairs on the downstream side of the transporting device 1 and arranged on the left and right sides, and is fed forward. By repeating this operation,
It is possible to sequentially take out a large number of sheet-shaped articles A, A overlapping on the transporting device 1 one by one from the front side.

For example, the vertical movement of the suction cup 2, the mesh operation by the suction cup 2, the forward and backward movement of the suction cup 2, and the driving of the take-out rollers 17, 17, 17, 17 arranged in a pair of upper and lower sides, for example, can be performed. The timing can be set as shown in FIG. In FIG. 8, in a portion represented by a straight line rising to the right or falling to the right, the suction cup 2 moves in either the vertical direction or the front-back direction, or at least while moving the suction cup 2 while drawing an approximate cycloid curve in order to perform a manipulating operation. It also indicates that the suction cup 2 is stopped at the portion indicated by the horizontal straight line. By moving the suction cups 2 in this manner with good timing, it is possible to automatically and efficiently take out a large number of sheet-shaped articles A, A overlapping on the carrier device 1 one by one from the front side.

In this way, the sheet-like article A is made by the suction cup 2.
When lifting, the sucker 2 is raised while drawing an approximate cycloid curve, and the sheet-like article A being lifted by the suction cup 2 is not simply lifted, but lifted up so that two articles are handled. Even if it is a relatively thin object that tends to cause picking problems, it can be reliably lifted one by one. If the article to be handled is less likely to cause the problem of taking two sheets, it is not necessary to intentionally move the sucker 2 in such a manner. It goes without saying that it can also be used in the case of handling a material that is unlikely to cause the problem of picking.

[0017]

According to the takeout method of the first aspect of the present invention, even if the articles to be handled are relatively thin ones that are likely to cause the problem of taking two sheets, it is possible to reliably lift the articles one by one. . Further, if the take-out device according to the second aspect is used, even if the article to be handled is a relatively thin article that tends to cause a problem of taking two sheets, it is possible to automatically and efficiently lift the articles one by one. .

[Brief description of drawings]

FIG. 1 is a schematic front view showing an example of a device for taking out sheet-like articles that are overlapped in a sashimi pattern.

FIG. 2 is a schematic side view of the sheet-shaped article take-out device shown in FIG.

FIG. 3 is a schematic front view showing an example of a mechanism for moving a suction cup up and down.

FIG. 4 is a schematic front view showing an example of a mechanism for raising a suction cup while drawing an approximate cycloid curve.

FIG. 5 is a schematic front view showing an example of a mechanism for moving a suction cup back and forth.

FIG. 6 is a schematic front view showing a suction block together with a slide block, a block, and the like when a sheet-shaped article is taken out.

7A to 7C are schematic views showing, in the order of steps, how to take out the sheet-shaped articles overlapping with each other in a sashimi state using a suction cup.

FIG. 8 is a time table showing the timing of the vertical movement of the suction cup, the manipulation of the suction cup, the back and forth movement of the suction cup, and the driving of the take-out roller.

FIG. 9 is an enlarged front view showing the trajectory of the suction cup rising while drawing an approximate cycloid curve.

FIG. 10 is an enlarged front view showing a state in which a large number of sheet-shaped articles are piled up in a sashimi-like shape on the transport device.

[Explanation of symbols]

1-conveyor, 2-sucker, 2a-slide block, 2c-
Lever, 2g-connection link, 3-block, 3a-shaft, 3b-
Guide rod, A-sheet-like article, a-gap, B-mechanism for moving the sucker up and down, C-mechanism for raising this while drawing an approximate cycloid curve on the sucker, and D-mechanism for moving the sucker back and forth.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] June 26, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction contents]

FIG. 7

Claims (2)

[Claims] 1. A plurality of sheet-shaped articles A, A are fed so as to overlap each other in a sashimi state, a suction cup 2 is made to act on the leading sheet-shaped article A, and this suction cup 2 is drawn while drawing an approximate cycloid curve. A method for taking out sheet-like articles which are overlapped in a sashimi shape, characterized by moving the sheets upward. 2. A conveying device 1 for feeding a plurality of sheet-like articles A, A in a sashimi-like manner, and one sheet-like article A at the head of the sashimi-like sheets A, A. A device for taking out sheet-like articles which are overlapped in a sashimi-like shape, which is provided with a suction cup 2 which is lifted by one and a mechanism C which draws an approximate cycloid curve on the suction cup 2 during the rise.