JP2013095558A - Sheet taking-out method, and sheet taking-out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet taking-out method and a sheet taking-out device which are capable of surely sucking and separating the sheet of the upper most layer from a group of many stacked sheets one by one.SOLUTION: In the sheet taking-out method for taking out the sheet 101 located at the uppermost layer of a sheet group 100 in which a large number of sheets are stacked, one by one in order from the sheet 101, the upper surface of the sheet 101 is sucked by a plurality of suckers 1 and 2 and the arrangement interval of a part or all of the suckers 1 and 2 is shortened while keeping the suction state, so that the top sheet 101 is flexed, a part of the top sheet 101 is floated from the sheet 102 of a next layer, and then, all of the suckers 1 and 2 are pulled up.

Description

  The present invention relates to a sheet take-out method and a sheet take-out apparatus, and more particularly to a sheet take-out method and a sheet take-out apparatus suitable for taking out sheets that are difficult to take out one by one.

  A solar cell is usually manufactured in the form of a solar cell module formed by combining a plurality of solar cells and covering the surface with glass. This is because the output per solar cell is usually as small as several watts, so that a large number of cells can be connected to obtain a collective power, and a stable output can be obtained even in an outdoor environment. It is because it is necessary to protect a photovoltaic cell so that it may be obtained.

  This solar cell module is manufactured by sealing a plurality of solar cells with a soft sheet such as an ethylene vinyl acetate sheet. That is, first, adjacent solar cells are connected using an interconnector to form an array cell. And on the tempered glass for the solar cell module, while laminating the resin soft sheet for sealing the solar cell, the array cell connecting the solar cell, the soft sheet, and the back film in this order, Attach a terminal wire for power extraction and seal the whole. After completing the sealing, a terminal box is attached to the terminal wire for power extraction, and a frame is attached to the whole to complete the solar cell module. The completed solar cell module is shipped after output characteristic inspection is performed using a solar simulator.

  Conventionally, the operation of placing the soft sheet on the tempered glass for the solar cell module, which is necessary for the above-described manufacturing process of the solar cell module, has been performed as follows.

  Using the vacuum suction pads provided at equal intervals above the stacked soft sheets, the entire uppermost sheet is sucked up and lifted upward to separate the soft sheets one by one and position them once. Transport to adjustment table. Thereafter, the soft sheet was positioned with the positioning adjustment table, and the entire sheet was sucked at once with a vacuum suction pad different from the above arranged at equal intervals, and then transferred onto the tempered glass for the solar cell module.

  As a technique for separating such stacked soft sheets one by one from the upper layer, a technique for flexing and separating the sheets has been proposed (see, for example, Patent Document 1).

  However, in the conventional technology for separating the soft sheets, only one uppermost sheet is stacked from the stacked soft sheets due to the adhesiveness existing between the stacked soft sheets or static electricity generated when separating the sheets. It was difficult to adsorb and separate. In addition, it is difficult to confirm whether or not there is one separated sheet. Furthermore, when the excessively adsorbed soft sheets are separated in the air and dropped onto the stacked soft sheets, the posture of the dropped soft sheets does not match that of the stacked soft sheets, and so on. There were also problems such as difficulty in separating sheets and unsuitability for mass production.

  As an invention made to solve such a problem, there is an invention of a sheet conveying apparatus having a sheet adsorbing means and a side clamping means (see Patent Document 2).

  However, even in the present invention, when the remaining soft sheets are several, due to the generation of static electricity, the soft sheet and the bottom plate receiving it stick together, and when the uppermost sheet adsorbed is lifted, the bottom plate also comes together There is a concern that the bottom plate may fall and be damaged due to this. As countermeasures, means such as ion blowing and static elimination are conceivable, but in practice, they are not effective in preventing sticking of the bottom plate.

  As another method that can eliminate the above-mentioned concerns, there is a method using a gripping hand that includes an upper hand and a lower hand (see Patent Document 3). In this method, a lower hand having a plurality of adsorbents on the lower surface is gradually bent so as to be convex downward as it rises from the bottom dead center, thereby similarly bending the uppermost sheet adsorbed by the lower hand. However, this is a method of completely separating the sheet while reaching the top dead center.

  However, this method uses the weight of the uppermost sheet that separates the sheet into a means for bending the sheet, and even when used to separate a thin film soft sheet having a small weight, only a small amount of bending occurs. It is not suitable for separation.

  In recent years, further reduction in the thickness of the soft sheet as a sealing material has been studied from a cost review. However, if the reduction in thickness is further advanced, the above-mentioned problem of sticking becomes more prominent, and the weight of the sheet is used. This method is also considered to be less suitable.

Japanese Patent Laid-Open No. 10-203660 JP 2006-21856 A JP 2010-30711 A

  Accordingly, the present invention has been made to solve the above-described problem, and can reliably adsorb and separate the uppermost sheet one by one from a large number of stacked sheets. An object of the present invention is to provide a sheet take-out method and a sheet take-out device that can prevent the bottom plate receiving the sheet group from being lifted even if the number of sheets is reduced and thus can prevent the bottom plate from dropping. It is said.

  In order to achieve the above-described object, a sheet take-out method according to the present invention is a sheet take-out method for taking out one sheet at a time from a sheet positioned in the uppermost layer of a sheet group in which a large number of sheets are stacked. The upper surface sheet is adsorbed by a plurality of adsorbents, and the uppermost sheet is bent by shortening the arrangement interval of a part or all of the adsorbents while maintaining the state, and a part of the sheet is made the next layer sheet. After floating from the top, the entire adsorbent is pulled upward.

  With this specific matter, even if the sheets are stuck to each other by static electricity, the sheets positioned in the uppermost layer can be reliably adsorbed and separated one by one.

  Another sheet take-out method according to the present invention is a sheet take-out method for taking out one sheet at a time from the sheet located in the uppermost layer of a sheet group in which a large number of sheets are stacked, and at least one of the plurality of adsorbents. After the plurality of adsorbers are lowered to the upper surface of the sheet in a state where one adsorbent is directed to the edge of the upper surface of the sheet, the adsorbents are adsorbed to the upper surface of the sheet at the bottom dead center. Then, at the bottom dead center, by causing the adsorbent adsorbed on the edge of the upper surface of the sheet to approach another adsorbent adjacent thereto, the sheet is bent between the adsorbents, and thereafter The whole adsorbent is raised.

  Due to this specific matter, the target area that causes the bending is the edge of the sheet with a small contact area between the sheets, and therefore, the peeling resistance and sliding resistance that the adsorbent receives from the sheet when the sheet is bent are determined. And can be flexed without damaging the uppermost sheet to separate it from the next sheet.

  Still another sheet take-out method according to the present invention is a sheet take-out method for taking out one sheet at a time from the sheet located in the uppermost layer of a sheet group in which a large number of sheets having corners are stacked. The plurality of adsorbers are lowered to the upper surface of the sheet in a state where at least one of the adsorbents is directed to the corner of the upper surface of the sheet, and the plurality of adsorbers are placed on the upper surface of the sheet at the bottom dead center After adsorbing, at the bottom dead center, the adsorbent adsorbed at the corner of the upper surface of the sheet is brought close to another adsorbent adjacent to the adsorbent, thereby causing the sheet to bend between the adsorbents. And then raising all of the adsorbent.

  Due to this specific matter, the target area causing the deflection is the corner of the sheet in which the contact area between the sheets is smaller than the edge of the sheet, so that the adsorbent receives from the sheet when the sheet is bent. The resistance and sliding resistance can be further reduced, and the uppermost sheet can be bent without damaging the sheet to separate it from the next sheet.

  A sheet take-out apparatus according to the present invention is a sheet take-out apparatus that takes out one sheet at a time from the sheet located in the uppermost layer of a sheet group in which a large number of sheets are stacked, and a plurality of adsorbers that adsorb onto the upper surface of the sheet. And a suction means in which at least one of the adsorbent bodies is a movable adsorbent that can be brought into contact with and separated from another adsorbent adjacent thereto, and the suction means is disposed on the upper surface of the sheet. Elevating means for raising and lowering from the upper surface to the upper surface, and the adsorbing body adsorbed to the upper surface of the sheet at the bottom dead center of the raising and lowering, the moving adsorbent and the other adsorbent adjacent to each other And a bend imparting means for causing the sheet to bend between both adsorbents.

  With this specific matter, even if the sheets are stuck to each other by static electricity, it is possible to reliably adsorb and separate only one sheet located in the uppermost layer.

  According to the present invention, the uppermost sheet can be reliably adsorbed and separated one by one from a large number of stacked sheet groups, and the sheet group can be removed even if the number of sheets remaining is reduced as the take-out progresses. It is possible to prevent the bottom plate from being lifted and to prevent the occurrence of a bottom plate dropping accident.

1 shows an embodiment of a sheet take-out method according to the present invention, (a) is a schematic perspective view showing a state immediately before the adsorbent is lowered, and (b) is a schematic front view. These drawings also show an embodiment of the sheet take-out apparatus according to the present invention. The next process of the process shown in FIG. 1 is shown, (a) is a schematic perspective view, (b) is a schematic front view. The next process of the process shown in FIG. 2 is shown, (a) is a schematic perspective view, (b) is a schematic front view. The next process of the process shown in FIG. 3 is shown, (a) is a schematic perspective view, (b) is a schematic front view. It is a schematic perspective view which shows other embodiment of the sheet | seat extraction method concerning this invention. It is a schematic front view which shows the other example of the moving direction of the adsorption body in the sheet | seat extraction method which concerns on this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1A is a schematic perspective view showing a state immediately before the adsorber is lowered in the sheet take-out method according to the present embodiment, and FIG. 1B is a schematic front view thereof. FIG. 1 also shows an embodiment of the sheet take-out apparatus according to the present invention. 2 shows the next step of the step shown in FIG. 1, (a) is a schematic perspective view, (b) is a schematic front view, FIG. 3 shows the next step of the step shown in FIG. FIG. 4 is a schematic perspective view, FIG. 4B is a schematic front view, FIG. 4 shows the next step of the process shown in FIG. 3, (a) is a schematic perspective view, and (b) is a schematic front view.

First, the sheet take-out device will be described, and then the sheet take-out method will be described.
-Sheet extraction device-
As shown in FIG. 1A, the sheet take-out device 10 is a device that takes out one sheet at a time from a sheet 101 positioned in the uppermost layer of a sheet group 100 composed of a large number of sheets 101 stacked on a bottom plate 200. . The sheet take-out device 10 includes a plurality of adsorbing bodies 1 as adsorbing means that are lifted and lowered by an elevating means (not shown) and are adsorbed on the upper surface of the sheet 101.

  The sheet 101 constituting the sheet group 100 is, for example, a rectangular soft resin sheet, and a specific example thereof is a sheet made of flat ionomer resin (trade name: High Milan, manufactured by DuPont). Note that the shape of the sheet 101 is not limited to a rectangular shape as illustrated, but may be another polygonal shape or a shape having no corners, such as a circle or an ellipse. Good.

  The sheet group 100 is placed on a bottom plate 200 made of synthetic resin, for example.

  The adsorbent 1 includes a vacuum adsorption block 1a that adsorbs to the upper surface of the sheet 101, and a suction pipe 1b that is connected to the center of the upper surface of the vacuum adsorption block 1a. In the vacuum suction block 1a, the surface (suction surface) that comes into contact with the upper surface of the sheet 101 is formed from a punching plate or a mesh plate having a plurality of suction holes so that the sheet 101 is not sucked into the interior during suction. It is envisaged. In the illustrated example, the suction surface is rectangular, but may be other polygonal shapes, circular shapes, or elliptical shapes. On the other hand, the suction pipe 1b is a hollow pipe having rigidity capable of suspending and supporting the vacuum suction block 1a, and the other end of the suction pipe 1b is connected to a vacuum pump (not shown). As a result, the vacuum suction block 1a is evacuated through the suction pipe 1b.

  In the present embodiment, a total of nine adsorbents 1 having such a configuration are arranged in a lattice pattern of 3 rows and 3 columns in a range having a smaller area than the sheet 101 immediately above the sheet group 100. (Here, the direction along the long side of the sheet 101 is a row, and the direction along the short side is a column). Among these nine adsorbents 1, three adsorbents in the first row along one short side region 101 c of the sheet 101 are the moving adsorbents 2. These moving adsorbents 2 are provided so as to be able to contact and separate from the adsorbents 1 in the second row adjacent thereto. Therefore, when the moving adsorbent 2 located in the first row approaches the adsorbent 1 side located in the second row, the distance between the two is shortened. As the moving means of the moving adsorbing body 2, conventionally known various actuators such as an air cylinder, a hydraulic cylinder, or a servo motor can be appropriately adopted. Such movement of the moving adsorbent 2 is performed at the bottom dead center where the adsorbent 1 descends toward the sheet group 100 and contacts the upper surface of the uppermost sheet 101, and this corresponds to the deflection applying means in the present invention. . The moving distance of the moving adsorbent 2 is such that the next sheet 102 is smoothly separated from the uppermost sheet 101 when the uppermost sheet 101 is pulled up, as shown in FIG. The distance may be a distance that can provide sufficient bending, and is appropriately set according to the properties of the sheet, such as the thickness and material of the sheet 101 and the flexibility.

  The nine adsorbing bodies 1 as described above are lifted from the upper surface of the sheet 101 positioned at the uppermost layer of the sheet group 100 and lowered toward the upper surface by lifting means (not shown). As the elevating / lowering means, similarly to the moving means of the moving adsorbing body 2, various conventionally known actuators such as an air cylinder, a hydraulic cylinder, or a servo motor can be appropriately adopted.

  In the above-described embodiment, three of the nine adsorbents 1 are movable adsorbents 2 and can be brought into and out of contact with the second adsorbents 1. Can be brought into contact with or separated from the adsorbent body 1 in the second row as a moving adsorbent body 2 or can be in contact with the adsorbent body 1 in the second row as three moving adsorbers 2 or three in the third row. It may be separable. Furthermore, the first row and the second row have six moving adsorbers 2 as the third row of adsorbents 1, or the second row and the third row have six moving adsorbers 2 as the moving adsorbers 2. Even if the body 1 can be contacted / separated, or the six in the first and second rows can be moved and adsorbed to the third row of the adsorbent 1, or the six in the second and third rows can be moved and adsorbed. The body 2 may be able to contact and separate from the first-row adsorbent body 1. Further, as shown in FIG. 5, among the three adsorbents 1 in the first row, one or both of the adsorbents 1 positioned at the corners of the sheet 101 are used as the moving adsorbents 2, The adsorbent 1 located in the second row may be brought into and out of contact with the adsorbent 1. Further, as shown in FIG. 6, instead of moving the three movable adsorption bodies 2 in the first row in parallel with the sheet 101, it is possible to move obliquely upward toward the adsorption body 1 side in the second row. Good. Furthermore, the number of adsorbents 1 is not limited to nine as described above, and may be two or more. In the case of four or more, they can be arranged in a lattice shape, but it is not necessary to have a lattice shape.

  Next, a method for taking out the sheet will be described.

-Sheet removal method-
First, as shown in FIG. 1, all the adsorbents 1 (including the moving adsorbents 2) in a state where the moving adsorbents 2 of the adsorbents 1 are directed to the short side region 101 c that is the edge of the upper surface of the sheet 101. Is lowered to the upper surface of the sheet 101.

  As shown in FIG. 2, all the adsorbents 1 including the moving adsorbents 2 reach the bottom dead center where the adsorbing surfaces of the vacuum adsorbing block 1 a are brought into contact with the upper surface of the uppermost sheet 101. Then, a vacuum pump (not shown) is activated to evacuate the vacuum suction block 1a through the suction pipe 1b, and the suction body 1 and the moving suction body 2 are sucked onto the upper surface of the sheet 101.

  Next, as shown in FIG. 3, at the bottom dead center, the moving adsorbent 2 located in the first row is brought close to the adsorbent 1 in the second row adjacent thereto, and both of these adsorbents 1 and 2 are placed. In the meantime, the sheet 101 is bent. Thereby, a part of the uppermost sheet 101 can be lifted from the next layer sheet 102.

  Finally, as shown in FIG. 4, the adsorbent 1 and the moving adsorbent 2 adsorbing the sheet 101 are raised from the bottom dead center. In the course of this rise, the gap between the sheet 101 and the next layer sheet 102 generated in the bent portion gradually increases, and this gap eventually expands to the entire area between both sheets, so that the sheet 101 and the next layer sheet 102 Are separated, and only the uppermost sheet 101 can be separated from the sheet group 100.

  After that, after the sheet 101 taken out as described above is delivered to the next process, the above-described process is repeated, so that the uppermost sheet 101 is reliably adsorbed one by one from the stacked many sheets 100. Will be separated.

DESCRIPTION OF SYMBOLS 1 Adsorbent body 2 Mobile adsorbent body 10 Sheet pick-up apparatus 100 Sheet group 101 Uppermost sheet

Claims (4)

A method of taking out sheets one by one from a sheet located in the uppermost layer of a group of sheets in which a large number of sheets are stacked,
The top surface of the sheet is adsorbed by a plurality of adsorbents, and the uppermost sheet is bent by shortening the arrangement interval of a part or all of the adsorbents while maintaining the state, and a part of the sheet is subsequently A method for taking out a sheet, wherein the adsorbent is lifted up after being lifted from a layer sheet. A method of taking out sheets one by one from a sheet located in the uppermost layer of a group of sheets in which a large number of sheets are stacked,
The plurality of adsorbents are lowered to the upper surface of the sheet in a state where at least one adsorbent of the plurality of adsorbers is directed to an edge of the upper surface of the sheet, and the plurality of adsorbents are moved at the bottom dead center of the lowering. After adsorbing on the upper surface of the sheet,
At the bottom dead center, the adsorbent adsorbed on the edge of the upper surface of the sheet is brought close to another adsorbent adjacent to the adsorbent, causing the sheet to bend between the adsorbents, and then A method for taking out a sheet, wherein the entire adsorbent is raised. A sheet take-out method for taking out one sheet at a time from a sheet located in the uppermost layer of a sheet group in which a large number of sheets having corners are stacked,
The plurality of adsorbers are lowered to the upper surface of the sheet in a state where at least one adsorbent of the plurality of adsorbers is directed to a corner of the upper surface of the sheet, and the plurality of adsorbents are lowered at the bottom dead center. After adsorbing on the upper surface of the sheet,
At the bottom dead center, the adsorbent adsorbed at the corner of the upper surface of the sheet is brought close to another adsorbent adjacent to the adsorbent, causing the sheet to bend between both adsorbents, and then A method for taking out a sheet, wherein the entire adsorbent is raised. A sheet take-out device for picking up one sheet at a time from the sheet located in the uppermost layer of a group of sheets in which a large number of sheets are stacked,
Adsorption provided with a plurality of adsorbents adsorbed on the upper surface of the sheet, and at least one adsorbent of the adsorbents is a movable adsorbent that can contact and separate from other adsorbents adjacent thereto Means,
Elevating means for raising and lowering the suction means from the upper surface of the sheet;
In a state where the adsorbent is adsorbed on the upper surface of the sheet at the bottom dead center of the lift, the movable adsorber and the adjacent adsorbent are brought close to each other, and the sheet is bent between the adsorbents. A deflection applying means for generating;
A sheet take-out device comprising:

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