JP2015034083A - Sheet transfer device and sheet transfer method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To continuously feed resin sheets without stopping a production line even if the separation of one resin sheet fails.SOLUTION: A sheet transfer device includes: a first sheet loading base 2 on which resin sheets 1 are loaded; an alignment sheet base 3 that is provided on a conveyance destination of the resin sheets 1 on the first sheet loading base 2 and on which the resin sheets 1 are loaded; sheet conveyance means 5 attracting the uppermost resin sheet 1 on the first sheet loading base 2 by movement between the first and second loading bases 2 and 3 and conveying this uppermost resin sheet 1 onto the alignment sheet base 3; blowing means 6 blowing air between the resin sheet 1 attracted by the sheet conveyance means 5 and the resin sheet 1 under the attracted resin sheet 1; measuring means 7 measuring a thickness of the resin sheet 1 separated by the blowing means 6; and control means 9 controlling the sheet conveyance means 5 to convey the resin sheet 1 to a second sheet loading base 8 other than the first sheet loading base 2 in accordance with a thickness measuring result of the measuring means 7 that indicates that the thickness differs from a thickness of one resin sheet.

Description

  The present invention relates to a sheet transfer apparatus and a sheet transfer method, for example, a resin sheet transfer apparatus and a sheet transfer method used in a solar cell manufacturing process.

  In recent years, interest in clean energy has increased from the viewpoint of global environmental protection, and in particular, solar cells have attracted attention as the use of solar energy, and are spreading. In the production of solar cells, it is an issue to increase the operating rate of the production line and to ship as many solar cells as possible.

  Usually, the manufacturing process of a solar cell produces a matrix-like solar cell by combining a plurality of solar cells, covers the matrix-like solar cell with a sealing material, covers the surface with a glass substrate, and covers the back with a protective film I am doing so. The reason is to protect the solar cells and to output stably in an outdoor environment. Each manufacturing process is automated, and in the process of placing the protective film on the solar cells, the sheet transfer device sucks and separates the matrix-sized resin sheets stacked on the sheet table one by one. It is designed to be transferred onto the battery cell.

  The protective film is referred to as a back sheet, and is required to have performances such as electrical insulation and adhesion between the protective film and the sealing material in addition to durability to withstand long-term outdoor use. In order to satisfy these functions, films with various layer structures have been developed and sold. For example, a film in which an aluminum film layer is coated with a resin film such as a polyethylene terephthalate (PET) film in order to improve moisture resistance. Is used. Generally, the resin layer is coated on both the front and back surfaces of the backsheet. Although the sheet thickness varies depending on the product, a thin backsheet of about 50 to 250 μm is used. Since this back sheet has an aluminum film layer and PET layers on both sides of the aluminum film layer, the back sheet can be bent slightly by hand, but the deformed part returns to its original shape and the back cannot be maintained. The sheet is not soft. However, if it is bent too much, marks will remain on the backsheet.

  Further, since the resin sheet is lighter and softer than the plate material and is an electrical insulator, it is easy to be charged with static electricity, and it is difficult to peel off these resin sheets when two resin sheets overlap. For this reason, conventionally, a method is known in which a resin sheet is separated and conveyed one by one by a resin sheet conveyance system including a mechanism for bending the resin sheet and a blower (see, for example, Patent Document 1). This method blows air between the uppermost stacked resin sheet (first sheet) and the lower resin sheet (second sheet) and lifts and curls the side edge of the first sheet. The two resin sheets are separated and transported by the force that is generated on the two sheets and is kept flat with the rigidity.

  Conventionally, in addition to lifting the side edge of the resin sheet and air blowing, a sheet conveying apparatus having a thickness measuring device for confirming that the separated sheet is one is known (for example, see Patent Document 2). ).

JP 2010-52836 A JP 2006-21856 A

  However, according to the sheet separating method described in Patent Document 1, there is a case where the sheets cannot be separated due to static electricity between the sheets simply by curving the sheets and applying wind between the sheets, and one sheet cannot be reliably separated. . For this reason, when it is discovered by some means that the sheet transfer apparatus has failed to separate one sheet, the production line is stopped and the worker deals with it, so that the operating rate of the production line decreases. . Further, when it is overlooked that the sheet separation has failed, there is a risk of supplying a defective product because, for example, two overlapping sheets are mounted on the solar cells.

  Further, according to the method described in Patent Document 2, since it is detected that two resin sheets have been taken out in duplicate, an abnormality warning can be output, but the production line is stopped and the operating rate is reduced. There is a problem of doing.

  The present invention has been made to solve the above-described problems, and separates resin sheets one by one from a resin sheet bundle on which resin sheets for solar cells are stacked, and conveys the resin sheets onto the solar cells. Providing a sheet transfer device and sheet transfer method that can prevent the stop of the production line and continuously supply a resin sheet even if the separation of one resin sheet fails when the resin sheet is taken out from the loading platform in the process The purpose is to do.

In order to solve such a problem, according to one embodiment of the present invention, a first sheet stacking table for stacking resin sheets;
An alignment sheet base provided at a destination of the resin sheet on the first sheet stacking base and on which the resin sheet is stacked;
A sheet conveying means that moves between these tables, and adsorbs and conveys the uppermost resin sheet of the resin sheets stacked on the first sheet stacking table to the alignment sheet table;
A blowing means for sending air between the uppermost resin sheet adsorbed by the sheet conveying means and the lower resin sheet;
Measuring means for measuring the thickness of the resin sheet separated by the air of the blowing means;
When the thickness of the resin sheet measured by the measuring unit is different from the thickness of one sheet, the resin sheet is placed on the sheet conveying unit as a second sheet stacking table different from the first sheet stacking table. Control means for transporting to
Is provided.

  According to another embodiment of the present invention, the first sheet stacking base further includes the resin sheet detection unit, and when the detection unit detects that no sheet exists, the control unit Is provided with a sheet transfer device for causing the sheet conveying means to convey the resin sheet on the second sheet stacking table to the positioning sheet table.

  Furthermore, according to another embodiment of the present invention, the resin sheet of the first sheet stacking table on which the resin sheets are stacked is adsorbed, and air is sent between the adsorbed resin sheet and the resin sheet below the resin sheet, The thickness of the separated resin sheet is measured, and the sheet transfer for conveying the resin sheet to a second sheet stacking table different from the first sheet stacking table based on a thickness measurement result different from one resin sheet. A loading method is provided.

  According to this invention, even if it fails to separate the resin sheets one by one automatically, since the resin sheets can be transferred continuously without stopping the production line immediately, the operating rate of the production line is lowered. The resin sheet can be reliably and continuously supplied to the solar cell substrate one by one.

It is a front view of the sheet transfer apparatus concerning an embodiment of the invention. It is a top view of the resin sheet on the 1st sheet stacking table of the sheet transfer apparatus concerning an embodiment of the invention. It is a flowchart which shows the example of control at the time of sheet transfer of the sheet transfer apparatus which concerns on embodiment of this invention. It is a front enlarged view of the transfer means of the sheet transfer apparatus which concerns on embodiment of this invention. It is a front enlarged view which shows the measurement state by the measurement means of the sheet | seat transfer apparatus which concerns on embodiment of this invention. It is a figure which shows the movement path | route of the sheet | seat transfer apparatus which concerns on embodiment of this invention. It is a figure which shows the 1st movement path | route at the time of the re-conveying operation | movement by the sheet | seat transfer apparatus which concerns on embodiment of this invention. 6 is a flowchart for explaining a sheet re-conveying operation by the sheet transfer apparatus according to the embodiment of the present invention. It is a figure which shows the 2nd movement path | route at the time of the re-conveying operation | movement by the sheet | seat transfer apparatus which concerns on embodiment of this invention.

  Hereinafter, a sheet transfer apparatus and a sheet transfer method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 9. In the drawings, the same portions are denoted by the same reference numerals, and redundant description is omitted.

Embodiment 1 FIG.
FIG. 1 is a front view of a sheet transfer apparatus according to the present embodiment. The sheet transfer apparatus according to the present embodiment includes a first sheet stacking table 2 on which a bundle of resin sheets 1 is stacked, and an alignment sheet that is a transport destination of the resin sheet 1 on the first sheet stacking table 2. A stand 3 is provided. The sheet conveying device 5 adsorbs the resin sheet 1 on the first sheet stacking table 2 by moving to the first sheet stacking table 2 and the alignment sheet table 3 and moving up and down to move the resin sheet 1. The sheet is conveyed to the alignment sheet base 3. The blower 6 sends an air flow between the resin sheet 1 adsorbed by the sheet conveying device 5 and the remainder of the sheet bundle. The thickness measuring device 7 measures the thickness of the resin sheet 1 separated from the sheet bundle by the air flow of the blower 6, and four thickness measuring devices 7 are provided. When any one of the thickness measuring devices 7 measures a thickness different from that of one resin sheet, the controller 9 loads the resin sheet 1 on the sheet conveying device 5 separately from the first sheet stacking table 2. To the second sheet stacking table 4.

  The resin sheet 1 is a back sheet used in the manufacturing process of the solar cell. The sheet size is, for example, 1120 × 1320 mm and the sheet thickness is 180 μm, and the resin sheets 1 cut in advance are stacked on the first sheet stacking table 2. The sheet layer structure has an aluminum film and a PET (polyethylene terephthalate) layer coated on both sides of the aluminum film. Since the surface is covered with a PET layer, static electricity is likely to be generated when the resin sheet 1 is separated, and the resin sheet 1 is separated from the sheet 4 by a “slipping” cut formed at the time of cutting. Since the side fits into the frame of the first sheet stacking base 2, it is difficult to separate the single resin sheet 1 from the sheet bundle. The sloping cut is a sheet cross section in a state where the cut end of the resin sheet 1 is deformed in the direction of the force received from the cutting blade and the cut end is not finished smoothly.

  On the first sheet stacking base 2, 200 resin sheets 1 are stacked. The first sheet stacking table 2 is provided with a sheet sensor 10 (detection means) that detects the sheet empty of the resin sheet 1. “Sheet empty” means that the resin sheet 1 is exhausted or the remaining number of sheets is less than a predetermined number and the remaining number is small. The first sheet stacking table 2 is provided with side plates for holding the side surfaces of the sheet bundle so that the positions of the stacked resin sheets 1 are not shifted. Each side plate is connected to the first sheet stacking table 2. It is provided with a gap in between.

  The alignment sheet base 3 has an alignment function for aligning the resin sheet 1 placed on the table. A camera 13 is provided above the alignment sheet base 3. The positioning sheet base 3 includes a moving table, and has a mechanism for moving the moving table minutely back and forth and right and left within the plane. This mechanism aligns the sheet skew θ and the x and y positions of the sheet corner portion on the alignment sheet base 3. In this mechanism, position detection software for detecting the position of the sheet edge by image processing using an output image from the camera 13 is mounted. Since the sheet thickness is thin, the position of the resin sheet 1 detected by the camera 13 is adjusted to a specified position by the mechanism, and then the resin sheet 1 is transferred onto the solar cell substrate mounting table 8. The

  A solar cell substrate is disposed on the solar cell substrate mounting table 8. The transfer of the solar cell substrate onto the loading table 8 of the resin sheet 1 is performed by the sheet conveying device 5 or another conveying device (not shown).

  The sheet conveying device 5 includes a horizontally suspended rail 14, a conveying head 15 that moves left and right by the rail 14 and moves up and down, and a plurality of suction pads 16 provided on the conveying head 15. ing. The rail 14 has a length including the position between the second sheet stacking table 4 and the alignment sheet table 3 and the upper position thereof. The transport head 15 includes an upper frame 17 that is moved by the rail 14, a pair of guides 18 provided on the upper frame 17, a pair of vertical movement mechanisms 19 that are moved up and down along the guides 18, and the vertical movement thereof. A lower frame 20 connected to the mechanism 19. A plurality of suction pads 16 are arranged on a matrix on the entire lower surface of the lower frame 20. Of these suction pads 16, two rows of suction pads 16 along the left and right sides of the lower frame 20 are provided with pad up / down mechanisms 21 for moving the pad tips up and down. By the vertical movement of the pad vertical mechanism 21, the entire surface of the resin sheet 1 is lifted all at once, or only the left and right end portions of the sheet are lifted and the resin sheet 1 is curved.

  The blower 6 disposed on the left and right of the lower frame 20 includes an air nozzle 22 provided in the transport head 15 and opened in the horizontal direction, and a blower 23 that sends an air flow into the air nozzle 22. The air nozzle 22 sends an air flow when the resin sheet 1 is adsorbed and lifted. The blower 23 is also provided with a static eliminator 25 that facilitates removal of static electricity. Instead of the blower 23, compressed air used in the whole factory may be used.

  FIG. 2 is a schematic plan view of the resin sheet 1 on the first sheet stacking table 2 as viewed from above. In FIG. 2, four thickness measuring devices 7 are arranged at the corners of the left and right opposing sides of the resin sheet 1. The thickness measuring device 7 grips the peripheral portion of the resin sheet 1 adsorbed by the transport head 15, measures the thickness with a micro gauge (not shown) built in the gripping portion, and outputs the measurement result. The thickness measuring device 7 is provided so as to be slidable horizontally between a position where the thickness measuring device 7 approaches the right side by the slide mechanism 26 shown in FIG. The four thickness measuring devices 7 are respectively arranged at the four corner portions of the resin sheet 1, and any one of these thickness measuring devices 7 may measure the sheet thickness at the peripheral portion of the sheet. . A gripper 27 having no measurement function is disposed at the corner portions of the upper and lower opposing sides of the resin sheet 1, and only the resin sheet 1 is gripped by these grippers 27.

  The second sheet stacking table 4 in FIG. 1 is a temporary storage place for the resin sheet 1 determined to be defective by thickness measurement. Here, “defective” means that the separation of one resin sheet 1 has failed. The sheet conveying device 5 reciprocates in a linear section between the first sheet stacking table 2 and the alignment sheet table 3, and the second sheet stacking table 4 is the first sheet stacking table 2 in this section. It is provided outside.

  When the controller 9 receives a signal indicating that the thickness measurement result is defective from the thickness measuring device 7, the controller 9 determines that the sheet conveying device 5 has failed to separate one resin sheet 1, and is adsorbed by the sheet conveying device 5. One or three resin sheets 1 are conveyed toward the second sheet stacking table 4. Further, when the sheet sensor 10 detects that the resin sheet 1 on the first sheet stacking table 2 is lost, the controller 9 positions the resin sheet 1 on the second sheet stacking table 4 in the sheet conveying device 5. The sheet is conveyed to the sheet table 3 for alignment. The controller 9 is equipped with a CPU, a ROM, and a RAM. The CPU executes a ROM program, thereby causing the sheet transfer apparatus to execute the above instruction.

  Next, the operation of the sheet transfer apparatus according to this embodiment having the above-described configuration will be described. FIG. 3 is a flowchart showing an example of control of the sheet transfer apparatus by the controller 9.

  First, in step A1, as shown in FIG. 1, the controller 9 moves the transport head 15 above the first sheet stacking table 2 on which the resin sheets 1 are stacked. In step A2, the controller 9 lowers the transport head 15 and brings the suction pad 16 into contact with the resin sheet 1 on the uppermost stacked surface. In this step A2, the controller 9 further pushes the suction pad 16 into the sheet surface, lowers the suction pad 16 to a position where it can be reliably sucked on the sheet surface, and then sucks the resin sheet 1 with the suction pad 16.

  Next, in step A3, the controller 9 lifts only the left and right peripheral portions of the sheet 1 by about 10 mm by the pad up-and-down mechanism 21, generates air blow from the left and right air nozzles 22 through the static eliminator 25, and the resin sheet 1 lifted by static electricity by air blow. Pull off the other sheet attached to the lower surface of. By separating the sheet peripheral portion and performing air blowing through the static eliminator 25, separation of one sheet becomes relatively easy. Electric charges distributed between the back surface of the resin sheet 1 and the other sheet surface are eliminated, and the adhesion force due to electrostatic attraction is lost.

  In step A3, only the peripheral portion of the sheet is lifted by the pad up-and-down mechanism 21, and most of the sheet surface is pressed by the suction pad 16, and since the lift amount is small, the lower side lifted together with the uppermost sheet 1 is used. Even if the sheet 1 falls in the middle, the position of the resin sheet 1 does not greatly shift and does not protrude outward from the side plate provided on the first sheet stacking base 2.

  Next, in step A4, the controller 9 measures the thickness of the resin sheet 1. FIG. 4 is an enlarged front view of the transport head 15, and FIG. 5 is an enlarged front view showing a measurement state by the thickness measuring instrument 7 on the left side of FIG. In these figures, the above-mentioned reference numerals represent the same elements. As shown in FIG. 4, the controller 9 moves the thickness measuring device 7 to the end portion of the resin sheet 1 adsorbed by the slide mechanism 26. As shown in FIG. 5, the thickness measuring instrument 7 grips the sheet peripheral portion of the resin sheet 1 from above and below. The thickness measuring device 7 grips the end of the sheet and simultaneously measures the thickness of the resin sheet 1 with a micro gauge or the like built in the grip.

  In step A5 in FIG. 3, the controller 9 determines success or failure of the separation of one resin sheet based on the thickness measurement result. When the measured thickness is larger than one sheet, the program determines that one sheet of the resin sheet 1 has failed to be separated.

  If the controller 9 determines that the separation of one sheet is successful as a result of measuring the thickness by the thickness measuring instrument 7 in step A5 (FIG. 3), the controller 9 passes the YES route, and in step A6, the controller 9 The sheet 1 is moved.

  FIG. 7 is a diagram showing a movement path from the first sheet stacking table 2 to the alignment sheet table 3. The controller 9 lifts the transport head 15 and then transports the resin sheet 1 onto the alignment sheet base 3 as shown in the movement path (see arrow) in FIG. The resin sheet 1 is placed after releasing the adsorption. The resin sheet 1 is aligned at the corners on the alignment sheet base 3.

  In step A7 in FIG. 3, the controller 9 confirms a signal indicating the presence / absence of a sheet from the sheet sensor 10. While the resin sheet 1 remains on the first sheet stacking base 2 in step A7, the controller 9 passes the YES route and proceeds to the process of step A1. After the resin sheet 1 is delivered, the transport head 15 is moved to the first head. After returning to the upper side of the sheet stacking table 2, the next resin sheet 1 is conveyed after step A2.

  Thereafter, the adsorption of the resin sheet 1 and the conveyance to the alignment sheet base 3 are repeated (step A1 to step A7).

  When the controller 9 determines that separation of one sheet has failed as a result of thickness measurement for a certain resin sheet 1 during this repeated conveyance (step A4), two or more resin sheets 1 are adhered to each other due to static electricity or the like. It is detected.

  In step A8 through the NO route of step A5, the controller 9 closes the arm-shaped gripping portion of the thickness measuring device 7 and moves the transport head 15 upward while being sucked by the suction pad 16. The controller 9 moves the transport head 15 to the second sheet stacking table 4. Other sheets that should have been separated in this step A8 but have not been separated remain in close contact with the first resin sheet 1 due to static electricity or catching of the sheet edge. While the resin sheet 1 is being sucked and conveyed, the gripper 27 keeps the gripping state, so that other sheets do not deviate from the resin sheet 1. As shown in FIG. 2, the controller 9 also keeps the thickness of the resin sheet 1 on the second sheet stacking table 4 in the gripped state by the thickness measuring device 7 and the gripper 27 located at the four corner portions of the sheet 1. Measure.

  Further, in step A8, the controller 9 releases the arm part of the thickness measuring device 7 and the gripping part of the gripper 27 at the timing when the transport head 15 moves on the second sheet stacking table 4, and cancels the suction of the suction pad 16. To do. After step A8, the controller 9 raises the conveying head 15 upward by the route A in FIG. 3 and returns it to the upper side of the first sheet stacking base 2, which is the original position, and thereafter conveys the next resin sheet 1. I do.

  As described above, even if the separation of one resin sheet 1 fails, the sheet transfer device temporarily places the resin sheet 1 in another stacking location, so that the sheet transfer apparatus does not stop the production line and does not stop the first sheet stacking. The next resin sheet on the table 2 can be separated and transferred to the alignment sheet table 3. Therefore, it is possible to reliably transfer and supply the resin sheets one by one continuously without lowering the operating rate of the production line.

  FIG. 8 is a flowchart for explaining the re-conveying operation of the resin sheet 1 on the second sheet stacking table 4 by the sheet transfer apparatus according to this embodiment. The above described symbols represent the same elements.

  FIG. 9 is a diagram illustrating a movement path during a re-conveying operation by the sheet transfer apparatus according to the present embodiment. When the sheet sensor 10 (on the left side in FIG. 1) detects that the resin sheet 1 on the second sheet stacking table 4 has run out, the controller 9 moves the transport head 15 above the second sheet stacking table 4. (Step B1 in FIG. 8). The controller 9 operates the sheet transfer device by the same control as described above. That is, the transport head 15 is lowered onto the sheet stacked on the second sheet stacking table 4, and the suction pad 16 is sucked to the uppermost layer of the sheet (step B2). The transport head 15 lifts the periphery of the sheet and sends an air blow by the blower 6 (step B3). The thickness measuring device 7 measures the sheet thickness in cooperation with the gripper 27 (step B4), and the controller 9 determines whether one sheet is separated (step B5).

  In the YES route of step B5, the transport head 15 transfers the resin sheet 1 that has been separated on the first sheet stacking table 2 to the alignment sheet table 3, and positions it after releasing the suction (step B6). . If one sheet cannot be separated, the conveying head 15 passes through the NO route in step B5 and is transferred onto the empty first sheet stacking table 2 to release the suction (step B8). Thereafter, the controller 9 performs the processing after step B1 by the route B in FIG. As a result, the sheet 1 stacked on the second sheet stacking table 4 is not discarded as a defective product, and the sheet 1 is folded on the first sheet stacking table 2 by hand so that the sheet 1 is not folded. It can also be prevented from becoming defective. That is, in the sheet transfer apparatus according to the present embodiment, a sheet that has not been separated can be reused.

  As described above, according to the sheet transfer apparatus and the sheet transfer method according to the present embodiment, the resin sheet 1 that could not be separated is transferred to the second sheet stacking table 4 while other sheets are adsorbed. By loading, it becomes possible to perform the transfer operation continuously without generating an alarm. One of the sheets 1 cannot be separated and temporarily placed on the second sheet stacking table 4 and then returned to the first sheet stacking table 2, and the next one resin sheet 1 is further separated to align the sheet. The time required for transferring to 3 increases as compared with the case where one sheet can be separated. However, the total time of the transfer time from the first sheet stacking table 2 to the second sheet stacking table 4 and the transfer time of the next sheet from the second sheet stacking table 4 to the alignment sheet table 3 Is much shorter than the system stop time due to the occurrence of a failure. Therefore, it is not necessary for the operator to deal with every occurrence of an alarm, and production delays from alarm notification to completion of sheet replenishment do not occur. Further, the resin sheet peeled off by the worker when a defect occurs can be reused, and the yield can be prevented from being lowered. Individual equipment elements can be continuously operated, and the throughput of the entire production line can be increased.

  The above embodiment is not limited to the embodiment as it is, and can be embodied by modifying the components without departing from the scope of the embodiment. In the above-described embodiment, the second sheet stacking table 4 as another stacking place is provided downstream in the reciprocating linear movement direction. However, the second sheet stacking table 4 is separated from the first sheet stacking table 2. You may provide in the direction orthogonal to a reciprocating linear motion direction within a horizontal surface. The sheet transfer apparatus according to the embodiment of the present invention is provided with a position sensor, a speed sensor, or an acceleration sensor, and the controller 9 performs an operation using these sensor outputs, whereby the positional relationship between each apparatus element and the conveyance The moving stroke amount, moving speed, direction, or suction / release timing of the suction pad 16 when the head 15 moves left and right and up and down is controlled.

  The configuration of the thickness measuring device 7 at the four corners in FIG. 2 is the same as the example of the thickness measuring device 7 in the lower left of FIG. A pair of thickness measuring devices 7 are arranged opposite to each other on the front side of the resin sheet 1 and on the depth side of the sheet, and any one of the thickness measuring devices 7 on which the resin sheet 1 is wound is provided. It is only necessary to measure whether it is one or not.

  4 to 7 and 9, the illustration of the blower 23 and the static eliminator 25 of FIG. 1 is omitted.

  DESCRIPTION OF SYMBOLS 1 ... Resin sheet, 2 ... 1st sheet stacking board, 3 ... Positioning sheet board, 4 ... 2nd sheet stacking board, 5 ... Sheet conveying apparatus, 6 ... Blower, 7 ... Thickness measuring device, 8 ... Loading platform, 9 ... controller, 10 ... sheet sensor, 13 ... camera, 14 ... rail, 15 ... transport head, 16 ... suction pad, 17 ... upper frame, 18 ... guide, 19 ... vertical movement mechanism, 20 ... lower frame , 21 ... Pad up / down mechanism, 22 ... Air nozzle, 23 ... Blower, 25 ... Static eliminator, 26 ... Slide mechanism, 27 ... Gripper.

Claims (8)

A first sheet stacking table for loading resin sheets;
An alignment sheet base provided at a destination of the resin sheet on the first sheet stacking base and on which the resin sheet is stacked;
A sheet conveying means that moves between these tables, and adsorbs and conveys the uppermost resin sheet of the resin sheets stacked on the first sheet stacking table to the alignment sheet table;
A blowing means for sending air between the uppermost resin sheet adsorbed by the sheet conveying means and the lower resin sheet;
Measuring means for measuring the thickness of the resin sheet separated by the air of the blowing means;
When the thickness of the resin sheet measured by the measuring unit is different from the thickness of one sheet, the resin sheet is placed on the sheet conveying unit as a second sheet stacking table different from the first sheet stacking table. Control means for transporting to
A sheet transfer device comprising:   The control means determines that the separation of one resin sheet has failed due to a notification that the thickness measurement result indicates a failure, and conveys a plurality of resin sheets adsorbed by the sheet conveying means to the second sheet stacking table. The sheet transfer apparatus according to claim 1, wherein: The first sheet stacker further includes a detection means for the resin sheet,
2. The sheet transfer apparatus according to claim 1, wherein the control means causes the sheet conveying means to convey the resin sheet on the second sheet stacking table to the alignment sheet table by detecting the sheet empty by the detecting means. . The sheet conveying means reciprocates between the first sheet stacking table and the alignment sheet table,
The sheet transfer apparatus according to claim 3, wherein the second sheet stacking base is provided outside the first sheet stacking base.   Adsorbing the resin sheet of the first sheet stacking table on which the resin sheet is loaded, sending air between the adsorbed resin sheet and the resin sheet below the adsorbed resin sheet, measuring the thickness of the separated resin sheet, A sheet transfer method for conveying the resin sheet to a second sheet stacking table different from the first sheet stacking table based on a thickness measurement result different from that for one resin sheet. Measurement of the thickness of the resin sheet,
The sheet transfer method according to claim 5, wherein it is determined whether one resin sheet is separated or a plurality of resin sheets are overlapped and adsorbed. Detecting a sheet empty in the first sheet stacking table;
The sheet transfer method according to claim 5, wherein after the detection, the resin sheet on the second sheet stacking table is conveyed to the alignment sheet table. The conveyance of the resin sheet on the second sheet stacking table to the alignment sheet table is as follows:
Moving between the first sheet stacking table and the alignment sheet table to the second sheet stacking table positioned outside the first sheet stacking table;
By adsorbing and separating the resin sheets one by one by descending from above,
The sheet transfer method according to claim 7, wherein the resin sheet on the second sheet stacking table is conveyed to the alignment sheet table.

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