JP2010105806A - Stack separating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stack separating device capable of positively separating sheets without damaging the sheets in a simple structure. <P>SOLUTION: This stack separating device 1 includes an adsorbing means 4 for adsorbing a top-most thin plate material P1 by an adsorbing tool 4a, and a first injection means 6 and a second injection means 7 for injecting air from the upper side of a stack 2 toward the stack 2. After preliminarily separating the top-most thin plate material P1 by air injection from the first injection means 6, the top-most thin plate material P1 is separated from the stack 2 by air injection from the first injection means 6 and the second injection means 7 while absorbing the top-most thin plate material P1 preliminarily separated by the adsorbing means 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a stack separating apparatus for separating and taking out the uppermost sheet from a stack in which a plurality of sheets are stacked.

  2. Description of the Related Art A stack separation device is known in which only the topmost sheet is taken out from a stack in which press steel plates are stacked and supplied to a press machine. As this stack separation device, a magnetic floater is provided to magnetize one side of a plurality of stacked steel plates to the same pole and repel each other, an upper air nozzle that blows air from above to the vicinity of the edge of the thin plate material, A side air nozzle that blows air from the side between the uppermost sheet material and the lower layer sheet material is provided, and the sheet material is partially lifted by blowing from the upper air nozzle and then blown from the side air nozzle And the like which separate the uppermost thin plate.

  However, magnetic separation is not applicable to non-magnetic materials such as aluminum plates and resin plates, and the second and subsequent steel plates are scraped from the top in order to reliably separate only the uppermost steel plate. A scraping device to drop is required, which increases costs and increases the installation space. In the case of separation by air, for example, when oil such as rust preventive oil adheres between thin plates, the separation is not performed reliably. There was a point. Therefore, flutter vibration (self-excited vibration) is applied to the uppermost sheet that is adsorbed by means for injecting air in a substantially horizontal direction toward the stack and floating one or more sheets from above and separating them. A stack separation device that includes a shake-off means that causes vibrations fluttering, and removes only the uppermost sheet by shaking off the lower sheet attached to the uppermost sheet by flutter vibration is disclosed in, for example, “Patent Document 1”. It is disclosed.

Japanese Patent No. 3911405

However, the technique disclosed in “Patent Document 1” has a problem that the structure of air blow is large and the configuration is complicated, and flutter vibration is caused by using high-pressure and low-pressure air, so that it is difficult to control airflow. There is.
SUMMARY OF THE INVENTION An object of the present invention is to provide a stack separating apparatus that solves the above-described problems and can reliably perform sheet separation with a simple structure without causing scratches.

  The invention according to claim 1 is a stack separating device for separating only one uppermost sheet material from a stack in which the sheet materials are stacked, the adsorbing means for adsorbing the uppermost sheet material with an adsorbing tool, A first injection means and a second injection means for injecting air toward the stack from the upper side of the stack, and the uppermost thin plate material is removed from the stack by air injection from the first injection means. After the preliminary separation, the uppermost thin plate material is separated from the stack by air injection from the first injection means and the second injection means while adsorbing the uppermost thin plate material preliminarily separated by the adsorption means. It is characterized by that.

  According to a second aspect of the present invention, in the stack separating apparatus according to the first aspect, the first injection means swings in the stacking direction of the thin plate materials.

  According to a third aspect of the present invention, in the stack separating apparatus according to the first or the second aspect, the first injection means has a higher air injection pressure than the second injection means and is disposed close to the stack. It is characterized by that.

  According to a fourth aspect of the present invention, in the stack separating apparatus according to any one of the first to third aspects, the first injection means is disposed at a position corresponding to at least four corners of the stack, and each air The injection port is swingable in the height direction of the stack.

  According to a fifth aspect of the present invention, there is provided the stack separating apparatus according to any one of the first to third aspects, further comprising a raising means for raising the stack when the thin plate material constituting the stack is reduced by a predetermined amount. And the first jetting means jets air in conjunction with the rise of the lifting means.

  According to the present invention, the uppermost pressing steel sheet is preliminarily separated by the first injection means before the adsorbing means adsorbs the uppermost pressing steel sheet, and the uppermost pressing steel sheet is adsorbed by the adsorbing means. Furthermore, since the second injection means performs the separation, the uppermost pressing steel plate can be reliably separated from the stack with a simple configuration, and the pressing process can be performed satisfactorily.

  FIG. 1 is a schematic front view of a stack separating apparatus employing one embodiment of the present invention, and FIG. 2 is a schematic plan view thereof. In the figure, the stack separating apparatus 1 includes a stack lifter 3 as a vertically movable lifting means on which a stack 2 in which a plurality of sheet steels P for pressing, which are a plurality of thin plate materials, are stacked, and the uppermost sheet steel for pressing in the stack 2 are stacked. There are an adsorption means 4 for adsorbing P1, a magnet 5 for separating the uppermost pressing steel plate P1 from the stack 2, a jet blow 6 as a first injection means, a floating blow 7 as a second injection means, etc. is doing.

  The stack lifter 3 shown only in FIG. 1 is loaded with a plurality of pressing steel plates P on its upper surface and is moved up and down by a vertical movement means (not shown). The stack lifter 3 rises when a predetermined number of steel plates P for pressing (10 sheets in the present embodiment) are taken out, and the operation is controlled so that the position of the uppermost pressing steel plate P1 is the same for every predetermined number of sheets. Is done. The suction means 4 shown only in FIG. 1 has a plurality of vacuum cups 4a which are suction tools, and the uppermost steel plate P1 is sucked by each vacuum cup 4a by moving up and down, and the suction conveying device 10 Thus, the uppermost pressing steel plate P1 adsorbed by moving in the front-rear or left-right direction in FIG. 1 is carried into a pressing machine (not shown). The vertical movement range of the suction means 4 is appropriately changed according to the position of the uppermost pressing steel plate P1, and the operation is controlled so that the uppermost pressing steel plate P1 is pressed by each vacuum cup 4a with a constant pressing force at all times. The

  A plurality of magnets 5 for separating the uppermost steel plate P1 for pressing from the stack 2 are disposed on opposite sides of the stack 2. The magnet 5 magnetizes one side portion of the plurality of pressing steel plates P to the same pole and repels and separates them from each other as in the conventional separation device. In addition, a spacer 5 a is provided between the magnet 5 and the stack 2 to prevent the stack 2 from being magnetized to the magnet 5.

  Jet blows 6 for separating the uppermost pressing steel plate P1 from the stack 2 are disposed at positions on opposite sides of the stack 2 and corresponding to the four corners of the stack 2. In this embodiment, the jet blow 6 having an air injection port at the tip is disposed 200 mm inside from the end of the stack 2 and the tip is disposed at a position 20 mm away from the stack 2 as shown in FIG. As shown in FIG. 4, the tip of the cylinder is swingable by a cylinder (not shown). The jet blow 6 is connected to an air generating means (not shown), and in this embodiment, air is injected from the tip thereof with a pressure of 0.7 MPa. The swing range of the jet blow 6 is set so that the jetted air swings within a swing range of about 20 mm, and the swing angle in this embodiment is set to about 10 degrees.

  A floating blow 7 for separating the uppermost press steel plate P1 from the stack 2 is disposed at a position corresponding to each magnet 5. In the present embodiment, the levitation blow 7 having an air injection port at the tip is disposed at a position 30 mm away from the stack 2 as shown in FIG. 3, and the jetted air as shown in FIG. It is configured to be injected into the stack 2 at an angle of about 15 degrees. The levitation blow 7 is also connected to the same air generating means (not shown) as the jet blow 6, and in this embodiment, air is injected from its tip at a pressure of 0.45 MPa.

  In FIG. 2, the stopper 8 is each arrange | positioned in the mutually opposing side part of the stack 2 in which the magnet 5 and each blow 6 and 7 are not arrange | positioned. The stopper 8 is provided to prevent the uppermost pressing steel plate P1 separated from the stack 2 by the operation of each magnet 5 and each blow 6, 7 from moving in the left-right direction in FIG.

  FIG. 6 shows the operation timing of the jet blow 6. In the present embodiment, the jet blow 6 is controlled to be sprayed for about 15 seconds when ten pressing steel plates P are carried and the stack lifter 3 is raised, and thereafter this operation is repeated. FIG. 7 shows the operation timing of the levitation blow 7. The flying blow 7 is controlled to be sprayed for about 2.2 seconds when the vacuum cup 4a is lowered, and thereafter this operation is repeated.

  According to the stack separator 1 of the present invention having the above-described configuration, the uppermost pressing steel plate P1 is preliminarily reserved by the magnet 5 and the jet blow 6 before the attracting means 4 attracts the uppermost pressing steel plate P1 of the stack 2. When the uppermost pressing steel plate P1 is separated by the adsorbing means 4, the flying blow 7 further separates, so that the uppermost pressing steel plate P1 can be reliably separated from the stack 2 with a simple configuration. A pressing process can be performed. Moreover, since the arrangement of the jet blow 6 and the levitation blow 7 can be easily changed, the irregularly shaped steel plate for pressing can be easily separated.

  In the above embodiment, the pressing steel plate P is shown as the thin plate material. However, the thin plate material that can be separated in the present embodiment is not limited to a magnetic steel plate, and a non-magnetic aluminum plate or resin plate can also be separated. . In the above-described embodiment, the magnet 5 is used as a means for separating the uppermost press steel plate P1 from the stack 2. However, the magnet 5 may not be used. In the above embodiment, the magnet 5 and each of the blows 6 and 7 are operated at the time of separation. However, it is not necessary to operate them simultaneously. For example, when the thin plate material is a magnetic material, only the magnet 5 is nonmagnetic. In the case of a body, only the blows 6 and 7 may be operated. Furthermore, in the above embodiment, the jet blow 6 is provided at only four locations corresponding to the four corners of the stack 2, but if there is a location where preliminary separation is difficult, it may be additionally provided there.

It is a schematic front view of the stack separation apparatus which employ | adopted one Embodiment of this invention. 1 is a schematic plan view of a stack separating apparatus employing an embodiment of the present invention. It is the schematic which shows arrangement | positioning of the jet blow used for one Embodiment of this invention, and a floating blow. It is the schematic which shows arrangement | positioning of the jet blow used for one Embodiment of this invention. It is the schematic which shows arrangement | positioning of the floating blow used for one Embodiment of this invention. It is a timing chart explaining the operation time of the jet blow used for one Embodiment of this invention. It is a timing chart explaining the operation time of the levitation blow used for one embodiment of the present invention.

Explanation of symbols

1 Stack Separator 2 Stack 3 Lifting means (Stack Lifter)
4 Adsorption means 4a Adsorption tool (vacuum cup)
6 First injection means (jet blow)
7 Second injection means (floating blow)
P Thin plate material (steel plate for press)

Claims (5)

A stack separation device for separating only one uppermost sheet material from a stack of sheet materials,
An adsorbing means for adsorbing the uppermost thin plate material by an adsorbing tool; and a first injecting means and a second injecting means for injecting air toward the stack from the upper side of the stack, After the uppermost thin plate material is preliminarily separated from the stack by air injection from the injection unit, the first and second injection units are adsorbed while adsorbing the uppermost thin plate material preliminarily separated by the adsorption unit. A stack separating apparatus for separating the uppermost thin plate material from the stack by air injection from the stack. The stack separator according to claim 1, wherein
The stack separating apparatus according to claim 1, wherein the first injection means swings in the stacking direction of the thin plate materials. The stack separating apparatus according to claim 1 or 2,
The stack separating apparatus according to claim 1, wherein the first injection means has a higher air injection pressure than the second injection means and is disposed close to the stack. The stack separating apparatus according to any one of claims 1 to 3,
The stack separating apparatus, wherein the first injection means is disposed at a position corresponding to at least four corners of the stack, and each air injection port is swingable in the height direction of the stack. The stack separating apparatus according to any one of claims 1 to 3,
It has a raising means for raising the stack when the thin plate material constituting the stack is reduced by a predetermined amount, and the first injection means injects air in conjunction with the raising of the raising means. Stack separator.

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