JPH04223947A - Method for preventing duplicate-hoisting of stacked thin plates - Google Patents

Abstract

PURPOSE:To hoist thin plates securely one by one with a simple means at the time of hoisting thin plates such as stacked steel plates from the top one in order. CONSTITUTION:The top surface of the top one of piled cut plates (thin plates) S is sucked for holding by a vacuum suction pad 24 of a hoisting device 1, and thereafter, the vacuum suction pad 24 is raised to hoist the top cut plate S1, and both side ends of the described cut plate S1 are made to abut on plate springs 28 arranged in both sides, while the cut plate S1 is passed through between the plate springs 28. At this passing time, when other cut plate S2 is stuck to the lower surface of the cut plate S1, this cut plate S2 is caught by the plate springs 28, and the cut plate S2 is forcedly separated downward by the elastic restoring force of the plate springs 28. As a result, only the cut plate S1 of the top position can be hoisted securely.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a method for preventing the hanging of two laminated thin plates, in particular, when lifting and taking out stacked thin plates such as cut plates of cold-rolled thin steel plates one by one starting from the highest one, This invention relates to a method for preventing hanging of two laminated thin plates, which can reliably prevent lifting of two or more thin plates.

0002

[Prior Art] It is not possible to store a large number of thin plates cut to a predetermined size in a stacked state, and to use the thin plates by sequentially taking out the thin plates one by one starting from the top layer as needed. , is carried out on a daily basis.

For example, in a steelworks, when handling sample plates (thin plates) such as test materials and test pieces of manufactured cold-rolled thin steel plates, the stacked sample plates are separated and handled one by one. Various works are being carried out to do so. When these operations are automated by equipment, the main method for lifting thin plates is to use vacuum suction pads. With this vacuum suction pad, if the plates are large and unlubricated, gaps will easily form between the plates due to deformation of the thin plates, so it is relatively easy to separate them one by one and lift them up. When it comes to boards, oiled boards, etc., there is a problem in that two or more boards are lifted together.

[0004] As described above, methods for preventing two or more thin plates from being lifted at the same time when lifting them using suction pads are disclosed in Japanese Patent Application Laid-Open No. 47-32571 and Japanese Patent Application Laid-open No. 49-26.
970, JP 54-97969, JP 58-216
846, Utility Model No. 49-33574, Utility Model No. 50-117
There are many methods, as shown in Japanese Utility Model No. 580, Utility Model Publication No. 54-10701, etc.

In addition, as shown in the perspective view of FIG.
Japanese Utility Model Publication No. 54-34945 discloses a technique using a device equipped with a pair of holding members 10 facing each other and capable of moving forward and backward in the direction of the plate material S and moving up and down. There, a pair of suction pads 14, which are rotatable in the direction of the arrow around the axis of the arm 12, are attached to the top end of the arm 12 on the surface of the uppermost plate S1, and the holding member 10 is It is brought into contact with the opposing side ends of the plate material S1, and its blade portion 10A is engaged with the side ends. Thereafter, by simultaneously moving both the holding members 10 both inward and upward, both sides of the plate material S1 are raised as shown. FIG. 4 shows this state viewed from the front.

[0006] As described above, if a gap is created between the uppermost plate material S1 and the lower plate material, peeling becomes easy, so the arm 12 is rotated by the tilting device 16 and the suction pad 14 is By raising it, it becomes possible to peel off only the plate material S1.

Furthermore, as another method, as shown in FIG. 5, a magnetic floater 18 is installed near the side edges of the laminated steel plates S, and the side edges of the plates S are magnetized with the same polarity. Then, by using the repulsive force, a gap is created between each plate,
It is known to lift only the uppermost plate material S1 by raising the suction pad 14 that has been previously adsorbed to the surface after making it easy to peel off.

[0008]

[Problems to be Solved by the Invention] However, in the technique disclosed in the above-mentioned Japanese Utility Model Publication No. 54-34945, the equipment used is large-scale, and high precision is required for operation control. The problem was that it could not be lifted.

[0009] The method of using the magnetic floater 18 is also applicable to stainless steel plates that cannot be magnetized, electromagnetic steel plates that dislike magnetic force, and small-sized plates whose side edges cannot be lifted up by magnetic force when pressed with a suction pad. The problem was that it could not be applied.

The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to form thin plates one by one by simple means without being subject to restrictions such as the material of the thin plates (plate materials). An object of the present invention is to provide a method for preventing the hanging of two laminated thin plates that can be lifted.

[0011]

[Means for Solving the Problems] The present invention provides a method for preventing the hanging of two laminated thin plates when the laminated thin plates are sequentially lifted by holding the upper surface of the laminated thin plates by a lifting means, starting from the uppermost one. In the middle of the lifting direction, an elastic claw member extending beyond the side edge of the lifted thin plate to the inside thereof is arranged, and the uppermost thin plate is held by the lifting means to lift the thin plate and the thin plate is lifted. The above-mentioned object is achieved by passing the above-mentioned thin plate in the above-mentioned state past the elastic claw member while bringing its side end into contact with the elastic claw member.

0012

[Operation] In the present invention, the uppermost thin plate is raised while being held on its upper surface, and while the side end of the thin plate is brought into contact with the elastic claw member disposed midway, the elastic Pass through the side of the claw member.

[0013] When the uppermost thin plate passes by the side of the elastic claw member, the elastic claw member is pushed upward by the side end portion of the thin plate and is also pushed outward and bent into a bent state. If another thin plate is attached to the lower surface of the thin plate, the uppermost thin plate passes through the elastic claw member and reaches a position directly above it, and at the same time, due to the downward elastic restoring force of the elastic claw member, , other thin plates attached to this thin plate are forcibly separated.

Therefore, according to the present invention, even if one or more other thin plates are attached to the lifted uppermost thin plate, the elastic pawl member with a simple mechanism allows the uppermost thin plate to be lifted up. Because it can be easily separated from the higher level,
It becomes possible to reliably lift only the uppermost thin plate. In addition, even if the thin plates are strongly adhered to each other because the surfaces of the thin plates are coated with oil, the biasing force of the elastic claw member is used to reliably separate the topmost thin plate from the other thin plates. becomes possible.

[0015]

Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic front view showing a lifting device applied to one embodiment of the present invention, along with its function.

The lifting device 1 has a lifting frame 20, and lifting cylinders 22 are installed at two predetermined positions on the upper part of the lifting frame 20 in the left and right direction in the figure. A vacuum suction pad 24 that can be raised and lowered by the cylinder 22 and has the function of holding the top surface of the cut plate (thin plate) is attached to the holder, and a fixed pad 26 is attached at an intermediate position between the two vacuum suction pads 24. There is.

A storage box B in which cut plates S are stacked and stored is arranged below the lifting device 1, and a separation box is provided between the storage box B and the lifting device 1. A leaf spring (elastic claw member) 28 is provided as a means, and the leaf spring 2
8 is movable forward and backward by a plate spring cylinder 30. This leaf spring 28, when the cutting board S is lifted,
The cylinder 30 is inserted so as to come into contact with the side end of the cutting plate S.
The position can be adjusted.

In this embodiment, first, the lifting cylinder 22 of the lifting device 1 is driven to lower the vacuum suction pad 24, and the vacuum suction pad 24 is placed on the uppermost cutting plate S1 in the storage box B. bring into contact.

Next, the pressure inside the vacuum suction pad 24 is reduced, and the uppermost cut plate is attracted and held by the pad 24, and the lifting cylinder 22 is driven to raise the vacuum suction pad 24. and pass inside the leaf spring 28.

In this manner, when the uppermost cut plate S1 is passed through the side of the leaf spring 28 in a suspended state, the other cut plate S2 attached to the lower surface of the cut plate S1 is Due to the action of the leaf spring 28, as shown in FIG.
It is separated from the machine and falls back to its original storage position.

Regarding the separating action of the leaf spring 28,
This will be explained with reference to FIG.

FIG. 2A shows a state in which the uppermost cutting plate S1 is lifted up by the vacuum suction pad 24 to a position where it contacts the leaf spring 28. Here, an example is taken where two other cutting plates S2 and S3 are attached to the uppermost cutting plate S1.

The tip of the leaf spring 28 is lifted up,
The position of the cut plate S1 that has been raised is adjusted so that it extends to the inside beyond the side edge of the cut plate S1. That is, a predetermined retreating allowance 28A is provided. This retreating allowance 28A is appropriately selected depending on usage conditions such as the material, size, and thickness of the cut plate S, and the characteristics of the leaf spring 18.

After the cutting plate S1 reaches the position shown in FIG. According to
Since it is pushed upward and spread outward at the same time, it is in a bent state. Then, the cutting plate S1
When further rises, the cutting plate S1 passes inside the leaf spring 28, and the tip of the leaf spring is located below the cutting plate S2.
The state shown in Fig. 2(B) is reached.

At the stage shown in FIG. 2(B), since the leaf spring 28 bent as described above has an elastic restoring force diagonally downward, this restoring force causes it to stick to the uppermost cutting plate S1. The cutting plates S2 and S3 that had been in use will be forcibly separated. Therefore, the above two cutting plates S2 and S3
can be easily and reliably separated, and as a result, it becomes possible to lift only the uppermost cut plate S1.

According to this embodiment, as described above, while using the leaf spring 28, which has an extremely simple mechanism, as the separating means,
Hanging of two cutting boards S can be reliably prevented without any restrictions on the type, size, material, etc. of the cutting board S.

[0028] Furthermore, the lifting device 1 applied to this embodiment is as follows:
A fixed pad 26 is placed between the two vacuum suction pads 24.
Therefore, when the cut plate S1 is lifted, both sides of the cut plate S1 can be bent upward as shown in FIG.
Even a steel plate coated with oil, to which 2 is firmly adhered, can be reliably separated, and the effects of this embodiment can be further enhanced.

Although the present invention has been described in detail above, it goes without saying that the method for preventing hanging of two laminated thin plates according to the present invention is not limited to that shown in the above embodiments.

For example, the elastic claw member is not limited to the above-mentioned leaf spring, but any material having a similar function may be used.
It can be changed arbitrarily, and the number can also be changed as appropriate.

Furthermore, in the embodiment, the lifting device is attached to the fixed pad 2.
6, and when the thin plate is lifted, the thin plate inevitably bends into a concave shape. However, the fixing pad may not be provided, and the thin plate may be lifted in a flat state.

Further, in the above embodiment, a lifting device in which vacuum suction pads are provided at two locations in the width direction is shown, but the invention is not limited to this, and depending on the size, weight, type, etc. of the thin plate to be lifted, The number and position of vacuum suction pads can be changed as desired.

Further, although only a vacuum suction pad is shown as the lifting means, the present invention is not limited to this, and for example, an electromagnet may be used instead of the vacuum suction pad.

[0034]

As described above, according to the present invention, thin plates can be reliably lifted one by one by simple means without being subject to restrictions such as the material, size, etc. of the thin plates.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing a lifting device applied to one embodiment along with its function.

FIGS. 2A and 2B are schematic explanatory diagrams showing the operation of the above embodiment.

FIG. 3 is a perspective view of a conventional peeling device.

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

FIG. 5 is an explanatory diagram showing a conventional thin plate separation method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Lifting device, 22... Lifting cylinder, 24... Vacuum suction pad, 28... Leaf spring, 30... Spring cylinder, S... Cutting plate.

Claims (1)

[Claims] Claim 1: In a method for preventing the suspension of two laminated thin plates when the laminated thin plates are sequentially lifted by holding the top surface from the uppermost one by a lifting means, the method includes: The uppermost thin plate is held by a lifting means, and the uppermost thin plate is lifted up, and the thin plate in the lifted state is held on its side. A method for preventing hanging of two laminated thin plates, characterized in that the end portions of the laminated thin plates are brought into contact with the elastic claw members while passing through the sides of the elastic claw members.