JPH0121058B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a method for separating thin plates, one by one, which have been attracted by a vacuum suction hand in a stacked state (referring to a state in which they are stuck together). .

(b) Prior art and problems When moving or transporting thin plates that are prone to defects, creases, or wrinkles, the safest method is often to use a vacuum suction hand to suction the thin plates. . In particular, when the weight is small, there is no need to increase the suction force, so the equipment can be relatively small-scale, so it is also used in the electronics and precision industry fields. For example, vacuum suction hands are frequently used when moving copper foil for printed circuit boards through a process line, or when feeding thin metal sheets, which are component materials for magnetic heads, to punching machines.

In FIG. 1, a vacuum suction pad 3 sucks one thin plate 1 from a stack 2 of thin plates 1, and a drive device (not shown) moves the vacuum suction hand 4 upward to lift the thin plate 1, and then it is placed in a predetermined position. FIG. 2 is a conceptual side view showing a conventional and very common transportation method of horizontally moving and transporting.

However, since the thin plates 1 are extremely lightweight, when the thin plates 1 are picked up from the laminate 2 by the vacuum suction pad 3, two or more of the thin plates 1 stick together and remain in place without being separated. carried,
In some cases, it may be processed as is.
This often causes problems in the manufacturing process. Since the thickness of the thin plate 1 is also thin, sometimes the fact that two or three thin plates 1 are layered may be overlooked by visual inspection, so there has been a need for an effective method for separating the thin plate 1.

(c) Purpose of the Invention The present invention has been made in view of the above-mentioned points, and aims to provide a method for automatically preventing the pinching of two or more thin plates when conveying them one by one with a vacuum suction hand. It is something.

(d) Structure of the Invention The object of the above invention is to enable the claw portion 5a of the vacuum suction hand 4 to contact the surface of the thin plate 1 in synchronization with the vertical movement of the vacuum suction hand 4, as shown in FIGS. 2a, b, and c. The thin plate 1 is attached to the thin plate 1 using a pair of hooking claw devices 5 that can be brought into a state in which the thin plate 1
This can be easily achieved by separating the

(e) Embodiments of the invention Examples of the invention will be described below with reference to the drawings. FIG. 2 is a side view showing an embodiment of the method for separating stacked thin plates according to the present invention.

As shown in FIG. 2A, a hooking claw device 5 is attached to a device for suctioning and lifting one thin plate 1 from a stack 2 of thin plates 1 with a vacuum suction pad 3, along the stack 2 as shown in the figure. Provide one. The claw portion 5a of the hooking claw device 5 normally faces the outside of the laminate 2. After the vacuum suction pad 3 that has suctioned the thin plate 1 starts to rise, rotate the hooking pawl device 5 so that the pawl portion 5a faces inward, and the vacuum suction pad 3 suctions the thin plate 1 as shown in Fig. 2b. The plate surface of the thin plate 1 that has been lifted and caught on the claw portion 5a. At this time, the vacuum suction pad 3 is
When the thin plates 1a and 1b are simultaneously attracted while being overlapped, the thin plate 1 is pressed by the claw portion 5a and curves from below as the vacuum suction hand 4 rises. However, only the surface of the thin plate 1a that is suctioned and fixed by the vacuum suction pad 3 is curved, but the lower thin plate 1b that is not suctioned by the vacuum suction pad 3 is curved.
Since the whole is deformed, there is a large difference in the deformation state of the thin plates 1a and 1b, a gap g is created between them, and the two are separated. At that time, as shown in FIG. 2c, the claw portion 5a is facing outward again, so that only the thin plate 1a separated from the thin plate 1b is attached to the vacuum suction hand 4.
and transported to the designated location.

Note that, as described above, the claws 5a of the hooking claw device 5 turn inward toward each other in synchronization with the vacuum suction pad 3 that has attracted the thin plate 1 starting to rise, and when the separation of the thin plate 1 is completed, they turn toward each other. Although the thin plate 1 is configured to face outward, if the thin plate 1 is made of a material with a high elastic limit and there is no fear of plastic deformation, it may be configured to always face inward.

FIG. 3 is a side view showing another embodiment of the method for separating layered thin plates according to the present invention, in which a push rod 6 is used in place of the hook device 5 of FIG. At the point where the vacuum suction hand 4, which has suctioned two thin plates 1 in a layered manner at the same time, is stationary, a pusher rod 6 rises from below, pushes the surface of the thin plate 1, bends the thin plate 1 upward, and moves the thin plate 1 It shows how to separate comrades.

FIG. 4 shows yet another embodiment in which the push rod 6 is also used, and the push rod 6 descends and bends the thin plate 1 sucked by the vacuum suction hand 4 downward to form overlapping thin plates 1a and 1b. Indicates that the two are separated.

Note that the push rod 6 is not in operation when the push rod 6 is in contact with the thin plate 1.
The structure is such that it is retracted from the board surface.

(f) Effects of the invention When the thin plates are picked up one by one by a vacuum suction hand from a stack of thin plates and transported, if the method for separating stacked thin plates according to the present invention is adopted, two pieces of laminated sheets,
It is possible to reliably and easily separate the three thin plates 1 that are attached to each other, which has the effect of improving work efficiency.

[Brief explanation of drawings]

Regarding the method of suctioning laminated thin plates one by one with a vacuum suction hand and transporting them to a predetermined location, Fig. 1 is a side view showing a conventional method, and Fig. 2 a, b
3 and c are side views showing one embodiment of the method for separating stacked thin plates according to the present invention, and FIGS. 3 and 4 are side views showing another embodiment of the method according to the present invention. In the figure, 1 is a thin plate, 2 is a laminate of thin plates 1,
3 is a vacuum suction pad, 4 is a vacuum suction hand, 5 is a hooking claw device, 5a is a claw portion, and 6 is a push rod.

Claims (1)

[Scope of Claims] 1. A thin plate separation method for individually separating thin plates 1 lifted in a stacked state by a vacuum suction hand or the like, comprising: synchronizing with the vertical movement of the vacuum suction hand 4;
The thin plate 1 is separated using a pair of hooking claw devices 5 whose claws 5a are configured to be in a state where they can come into contact with the plate surface of the thin plate 1, or become in a state where they cannot come into contact with the plate surface of the thin plate 1. A method for separating multilayered thin plates. 2. Separation of the thin plate 1 using a push rod 6 whose entire structure is movable up and down and whose tip can come into contact with the plate surface of the thin plate 1 or into a state where it cannot come into contact with the surface of the thin plate 1. 2. The method for separating laminated thin plates according to claim 1, further comprising: performing the following steps.