JP2008036857A - Laminator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminator constituted so as not to prevent the adherend scraped off from a release sheet from adhering to a next article to be processed. <P>SOLUTION: The laminator 100 is constituted so that the article 10 to be processed is fed by a feed belt 130 to be sent into a lamination part equipped with a diaphragm and a heater and the release sheet 140 is interposed between the diaphragm and the article 10 to be processed to press the article 10 to be processed while melting the filler in the article 10 to be processed to perform lamination processing. Both of the release sheet 140 and the feed belt 130 are subjected to reciprocating winding-up movement by the takeup rollers 141, 142, 131 and 132 provided on both sides of the feed belt 130. An adherend removing means 150 is provided on the downstream side in the feed direction of the diaphragm of the release sheet 140 and a belt cleaning means 160 is provided to the feed belt 130. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a laminating apparatus for producing a laminated body such as a solar cell module.

  As a conventional laminating apparatus for manufacturing a solar cell module, for example, there are known examples described in publications such as Patent Document 1, Patent Document 2, and Patent Document 3. As these laminating apparatuses, those having upper and lower chambers are used. The upper chamber has a diaphragm that can expand downward, the lower chamber has a heat generating plate therein, the upper and lower chambers are hinged, and the upper chamber is like a lid of the lower chamber.

  The usage method of this laminating apparatus is as follows. First, in a state where the upper chamber is opened, the work is placed on the transport belt and transported, and the work is placed on a heat generating plate provided in the lower chamber. A solar cell module as a work piece is a glass plate at the bottom layer, and a sheet-like filler, solar cells, and a sheet-like filler are sequentially laminated on the glass plate, and a sheet-like back material is arranged on the top layer. This is the configuration. The upper chamber is overlapped with the lower chamber, the inside of the upper and lower chambers is decompressed, and the workpiece is heated. Thereafter, the atmosphere is introduced only into the upper chamber to expand the diaphragm, and the solar cell module as a workpiece is sandwiched between the upper surface of the heat generating plate and the diaphragm. The filler is melted by the heat of the heat generating plate, undergoes a crosslinking reaction, is cured, and is laminated.

  In the above process, the purpose of reducing the pressure by overlapping the upper chamber and the lower chamber is to prevent bubbles from remaining in the solar cell. This is because, when bubbles are left in the solar cell, when exposed to sunlight, the temperature rises and the bubbles expand to accelerate deterioration.

  Moreover, although the solar cell module is heated by the heat generating plate, since the temperature of the heat generating plate is controlled to the set temperature, the workpiece becomes almost the same as the temperature of the heat generating plate when a predetermined time elapses. Therefore, the filler can be melted by setting the set temperature of the heat generating plate higher than the melting point of the filler. Further, by introducing the atmosphere only to the diaphragm of the upper chamber, the diaphragm can be expanded and the workpieces can be pressed against the heat generating plate and joined together. After joining, the lid can be opened by returning the lower chamber to atmospheric pressure, and the workpiece can be taken out.

  On the other hand, EVA resin (ethylene vinyl acetate) or the like is usually used as the filler. Since the EVA resin melts at about 80 to 100 ° C., in the laminating apparatus, the EVA resin is melted and press-bonded at the temperature of 80 to 100 ° C. or more.

  By the way, the filler used in the laminating process as described above is formed in a sheet shape, and its size is formed to be about several mm larger than the size of the workpiece. This is to ensure the sealing property at the end face of the solar cell module to be laminated. When manufacturing a solar cell module, when a workpiece is heated on a heating plate, EVA as a filler flows out and adheres to a diaphragm, a conveyor belt, or the like. Then, even if the EVA attached to the diaphragm or the conveyor belt has a diameter of only about 1 mm, if it attaches to the solar cell module to be laminated next, it is thinly stretched and transferred to the cover glass. And dirty or dent the back material. In the case of a larger deposit, the solar battery cell may be broken by pressing the back material, causing trouble and adversely affecting the laminate quality.

  Therefore, conventionally, an EVA melted from the solar cell module is prevented from adhering to the diaphragm by covering the solar cell module carried between the upper and lower chambers with a release sheet made of a silicon-impregnated glass cloth sheet or the like. . Further, the surface of the conveyor belt is also coated with silicon in order to make it easy to remove deposits. Such an operation of covering the release sheet and an operation of removing EVA attached to the release sheet or the conveyor belt are performed by the hands of the worker, which increases the work load.

  In order to solve such a problem, in Patent Document 2, winding rollers are provided at both ends of a release sheet, and rotating rollers on both sides are alternately rotated, so that a workpiece and a diaphragm are interposed between them. The release sheet can be sent and collected. Note that it is difficult to make the release sheet an endless type due to a problem in the structure of the laminating apparatus, and a winding type in which winding rollers are provided at both ends is employed.

And, on the carry-in side (upstream side in the transport direction) for feeding the workpieces to the upper and lower chambers, there is provided a deposit removing means for removing deposits such as a filler adhering to the release sheet. With such a configuration, it is possible to prevent deposits such as EVA from adhering to a diaphragm sheet or the like without increasing the work load.
JP-A-9-141743 JP-A-11-204811 Utility Model Registration No. 3037201

  However, the laminating apparatus described in Patent Document 2 has the following problems. Since the means for removing the adhered matter adhered to the release sheet is provided on the upstream side in the conveyance direction of the workpiece, the adhered material scraped off by the adhered material removing means is placed on the workpiece to be subjected to the next laminating process. Fall. And if it laminates as it is, it will become inferior goods. On the other hand, deposits also adhere to the conveyor belt, but there is no device for removing deposits here.

  Further, a brush roller is used as the deposit removing means, but this brush roller is provided only on one side of the release sheet. Since this one surface is a surface to which the adhering material directly adheres, there is no problem if all the adhering material on this surface is scraped off. However, some deposits may remain, and when these deposits are wound up by the take-up roller, they may adhere to the back surface of the release sheet. Since the back surface of the release sheet is in direct contact with the diaphragm, deposits adhere to the diaphragm. The diaphragm is made of a stretchable rubber material, and when an EVA deposit adheres to the diaphragm, it prevents uniform deformation of the diaphragm during pressing. Furthermore, since the adhered portion of the EVA deposit is melted and solidified, the diaphragm is easily damaged during repeated pressing. In addition, there is a problem that the release sheet is prevented from smoothly moving forward and backward due to the release sheet sticking to EVA adhered to the diaphragm.

  On the other hand, if an electric heater is used as the heater, the transport belt can be made into an endless structure. In addition, the electric heater can perform temperature control easily and accurately. However, on the other hand, the temperature distribution varies greatly and a temperature difference of about ± 5 ° C. occurs. When the temperature distribution varies, there is a problem that the molten state of the filler is not uniform and bubbles are generated in the molten filler.

  On the other hand, when an oil heater is used as the heater, the temperature distribution can be made substantially uniform. However, if the heater is an oil heater, the auxiliary machines are arranged on the inner side of the frame, so that the transport belt cannot adopt an endless structure, and a reciprocating traveling system in which forward / reverse feeding is performed is adopted. And the EVA deposit | attachment adhering to the surface of a conveyance belt adheres to the following to-be-processed object, and becomes a cause which soils a to-be-processed object. In the case of the reciprocating traveling method, the conveyor belt is wound up between the workpiece carrying-in side and the unloading side, and therefore, when the conveyor belt is wound up, the deposits move to the back surface of the conveyor belt, When laminating a workpiece, the deposit adheres to the heater and reduces the function of the heater. In addition, if the deposits are transferred to the back surface of the conveyor belt, the workpiece may float when the laminate is laminated, or the conveyor belt and the heater may be bonded by the filler, and the conveyor belt cannot run. Occurs.

  The present invention has been made to solve these problems, and a first object of the present invention is to provide a laminating apparatus in which deposits scraped off from a release sheet do not adhere to the next workpiece. It is a second object of the present invention to provide a laminating apparatus provided with a belt cleaning means that can remove deposits adhering to the conveyor belt. Moreover, it aims at providing the laminating apparatus which can remove the deposit | attachment adhering to the back surface of a peeling sheet or a conveyance belt in addition to the 1st, 2nd objective.

In order to achieve the first object described above, the laminating apparatus of the present invention feeds a workpiece into a laminating section having a diaphragm and a heater, and interposes a release sheet between the diaphragm and the workpiece. A laminating apparatus for laminating by sandwiching a workpiece while melting the filler inside the workpiece with the diaphragm and the heater, the laminating position for laminating the release sheet, and the laminating position Provided with a release sheet moving means that reciprocates between the workpiece and a standby position that is disengaged downstream in the conveyance direction of the workpiece, and adheres to the release sheet at a position downstream of the laminate portion in the conveyance direction. The present invention is characterized in that a deposit removing means for removing the deposit is provided.

  The adhering matter removing means is configured to be a brush roller provided on both sides of the release sheet, or the contact pressure between the brush roller and the release sheet is adjusted by advancing and retracting an adjuster that supports the brush roller. The deposit removing means has a deposit receiving device for receiving the deposit removed from the release sheet, or a cooling nozzle is provided between the deposit removing means and the laminate portion. Or a configuration in which an adhesive roller is provided at a rear position where the release sheet has moved from the laminating position and passed through the deposit removal means, or a suction means is provided in the vicinity of the deposit removal means. Or the deposit removing means is provided in a portion where the release sheet is inclined, or the workpiece is moved by the conveyor belt. Is conveyed on the data, at a position deviated from the heater of the conveyor belt, it is possible to adopt a configuration in which a belt cleaning means for removing deposits adhering to the conveyor belt.

  Alternatively, in order to achieve the second object of the present invention, the laminating apparatus of the present invention feeds a workpiece into a laminating section having a diaphragm and a heater, and the workpiece is processed by the diaphragm and the heater. A laminating apparatus for laminating by sandwiching a workpiece while melting a filler inside the workpiece, wherein the conveying belt is laminated at a laminating position for laminating and downstream of the laminating direction from the laminating position. A conveyor belt moving means that reciprocates between the unloading position and a belt cleaning means that removes deposits adhering to the conveyor belt is provided at a position away from the laminating portion. Yes.

  The belt cleaning means is configured to be a brush roller provided on both sides of the transport belt, or the contact pressure between the brush roller and the transport belt is adjusted by advancing and retracting an adjuster that supports the brush roller, The belt cleaning means is configured to have a deposit receiving tool for receiving the deposit removed from the conveyor belt, or a cooling nozzle is provided between the belt cleaning means and the laminate portion, The conveyance belt is moved from the laminating section and has a configuration in which an adhesive roller is provided at a position behind the belt cleaning device, or a suction device is provided in the vicinity of the belt cleaning device. The means may be provided in a portion where the conveyor belt is inclined.

  In the laminate part, one surface of the workpiece is pressed against the diaphragm via the release sheet, and the other surface is pressed against the heater via the transport belt, and receives the heat of the heater. As a result, the internal filler is melted and laminated. When the filler melts, a part flows out of the workpiece and adheres to the release sheet and the conveyor belt. According to this invention, the deposit | attachment which such a filler fuse | melted and adhered on the peeling sheet can be scraped off by the deposit | attachment removal means provided in the downstream of the conveyance direction. Further, since scraping is performed on the downstream side, the adhered matter scraped off on the next workpiece waiting on the upstream side in the conveying direction does not fall.

  Further, the adhered matter adhering to the conveyor belt can be removed by a belt cleaning means provided at a position removed from the laminate portion. Since the conveyor belt is under the workpiece and the deposits scraped off from the conveyor belt do not fall on the next workpiece, the belt cleaning means may be upstream or downstream of the heater. .

  The adhering matter removing means or the belt cleaning means is a brush roller, and the adhering matter adhering to the release sheet or the back surface of the transport belt can be removed by providing the brush roller with both sides of the release sheet or the transport belt. .

  By providing the deposit receiver, the deposit scraped off by the deposit removing means and the belt cleaning means can be prevented from adhering again to the release sheet and the conveyor belt.

  By providing a cooling nozzle before the release sheet or the conveyor belt enters the deposit removing means or the conveyor belt cleaning means, the deposit is solidified and easily removed by the deposit removing means or the conveyor belt cleaning means. Can do. Furthermore, by directing the cooling nozzle to the lower surface of the release sheet, the workpiece after lamination can be easily separated from the release sheet.

  By adding an adhesive roller to the deposit removing means or the belt cleaning means, a small amount of remaining deposits can be removed. By adding a suction means to the deposit removal means or the belt cleaning means, the remaining deposits can be removed.

  If the deposit removing means or the belt cleaning means is provided in a portion where the release sheet or the conveyor belt is inclined, the deposit is easily scraped off from the release sheet or the conveyor belt.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a diagram showing a configuration of a first embodiment of a laminating apparatus of the present invention. The supply conveyor 200 is on the right side of the laminating apparatus 100 shown in the figure, and the carry-out conveyor 300 is on the left side. The supply conveyor 200 supplies the solar cell module as the workpiece 10 to be laminated to the laminating apparatus 100, and the carry-out conveyor 300 carries out the workpiece 10 that has been laminated. .

  Then, the workpiece 10 is conveyed to the left in FIG. 1 while delivering the supply conveyor 200, the laminating apparatus 100, and the carry-out conveyor 300 in this order. The laminating apparatus 100 is provided with a conveyor belt 130 for receiving the workpiece 10 from the supply conveyor 200 and passing it to the carry-out conveyor 300.

  As described above, if the heater 122 (FIG. 3) is an electric heater, the transport belt 130 can be made endless. However, since the electric heater has a problem that a temperature difference occurs, in this embodiment, an oil heater that hardly generates a temperature distribution is used as the heater 122. When the oil heater is used, as described above, since the auxiliary machines are disposed under the lower case 120, it becomes difficult to make the conveyor belt 130 endless. It is said.

  That is, the conveyance belt 130 has the intermediate roller 133 and the winding roller 131 on the upstream side in the conveyance direction, and has the intermediate roller 134 and the winding roller 132 on the downstream side. These winding rollers 131 and 132 constitute a conveying belt moving means. The straight portion of the conveyor belt 130 passes over the lower case 120 and is bent vertically downward by the intermediate rollers 133 and 134 on both sides.

  When the downstream winding roller 132 rotates for winding, the conveyor belt 130 moves in the direction indicated by the solid line, and passes the workpiece 10 laminated in the laminating unit 101 to the carry-out conveyor 300. The position where the downstream winding roller 132 completes winding is defined as the unloading position. Thereafter, when the upstream winding roller 131 rotates for winding, the conveyor belt 130 moves in the direction of the dotted arrow, and the workpiece is processed from the supply conveyor 200 at a position where the winding roller 131 completes winding. It returns to the state which receives the thing 10. Next, when the winding roller 132 on the downstream side rotates for winding, the conveyor belt 130 moves in the direction of the solid line arrow, and the next workpiece 10 is carried from the supply conveyor 200 to the laminating position, and the conveyor belt 130 is moved. Stops.

  The laminating apparatus 100 has an upper case 110 and a lower case 120. The upper case 110 is coupled to the lower case 120 via a hinge or a lifting device, and the upper case 110 is like a lid of the lower case 120. By closing the lid, the upper case 110 is in close contact with the lower case 120, and is opened apart by opening the lid.

  Between the workpiece 10 and the diaphragm 112 (FIG. 3), a release sheet 140 similar to that described in the conventional example is disposed. The release sheet 140 is a reciprocating winding type similar to the conveyor belt 130, and has an intermediate roller 143 and a winding roller 141 on the upstream side in the conveying direction, and an intermediate roller 144 and a winding roller 142 on the downstream side. These take-up rollers 141 and 142 constitute release sheet moving means. The straight portion of the release sheet 140 passes under the diaphragm 112 and rises vertically upward at the intermediate rollers 143 and 144.

  When the winding roller 142 rotates and the release sheet 140 is wound in the direction indicated by the solid line, the brush roller 151 also rotates in the direction indicated by the solid line. When the winding roller 141 rotates and the release sheet 140 is wound in the direction of the dotted arrow, the brush roller 151 also rotates in the direction of the dotted arrow. By such rotation, at the position where the brush and the release sheet 140 are in contact with each other, the traveling direction of both is reversed, and the relative speed at which the brush scrapes off is increased so that the scraping can be performed effectively.

  When the upstream side take-up roller 141 is rotated to wind up the release sheet 140, the release sheet 140 moves in the direction of the dotted line arrow. The laminating position to be used. Then, when the downstream winding roller 142 is rotated in the winding direction from this position, the release sheet 140 moves in the direction indicated by the solid line arrow, and the portion that has pressed the workpiece 10 is on the downstream side. A position where the winding is completed by the winding roller 142 is taken as a standby position.

  FIG. 2 is a cross-sectional view showing the structure of a solar cell module as the workpiece 10. The solar cell module has a configuration in which a string 15 is sandwiched between fillers 13 and 14 between a transparent cover glass 11 arranged on the lower side and a back material 12 arranged on the upper side as shown in the figure. . The back material 12 is made of a transparent material such as polyethylene resin. For the fillers 13 and 14, for example, EVA (ethylene vinyl acetate) resin or the like is used. The string 15 has a configuration in which solar cells 18 are connected between the electrodes 16 and 17 via lead wires 19.

  FIG. 3 is a cross-sectional view showing the laminate unit 101. A diaphragm 112 is mounted so as to partition the interior of the upper case 110 horizontally, and a space surrounded by the diaphragm 112 and the inner wall surface of the upper case 110 is an upper chamber 113. The diaphragm 112 uses heat-resistant rubber such as fluorine-based rubber. In addition, an intake / exhaust port 114 communicating with the upper chamber 113 is provided on the upper surface of the upper case 110. The intake / exhaust port 114 is connected to a vacuum pump (not shown) to evacuate the inside of the upper chamber 113 or And the atmospheric pressure can be introduced into the upper chamber 113.

  A plate-like heater 122 is disposed in the lower chamber 121 as an internal space of the lower case 120. As described above, the heater of this embodiment uses an oil heater. The heater 122 is supported by a support body or the like from the bottom of the lower chamber 121 as shown in FIG. 3 or FIG.

  An intake / exhaust port 123 is provided on the lower surface of the lower case 120 so as to communicate with the lower chamber 121. The lower chamber 121 is sealed at the upper side by the upper case 110 so that the inside of the lower chamber 121 can be evacuated from the intake / exhaust port 123 or atmospheric pressure can be introduced into the lower chamber 121 from the intake / exhaust port 123. It is configured.

  Lamination of the workpiece 10 is performed as follows. First, the winding roller 141 is rotated in advance to wind the release sheet 140 in the direction indicated by the dotted line in FIG. Further, the winding roller 131 winds up the conveyor belt 130 in the direction indicated by the dotted line in FIG. Next, the winding roller 132 conveys the workpiece 10 while winding the conveyance belt 130, and stops when reaching the laminating position. The upper case 110 is closed and overlapped on the lower case 120, and the intake and exhaust ports 114 and 123 are connected to a vacuum pump to reduce the pressure in the upper chamber 113 and the lower chamber 121. Further, the heater 122 is heated and pressed against the workpiece 10 through the transport belt 130. When a predetermined degree of vacuum is reached and the heater 122 reaches a predetermined temperature, the atmosphere is introduced into the upper chamber 113.

  As shown in FIG. 4, the diaphragm 112 swells downward and strongly presses the workpiece 10 against the heater 122 via the release sheet 140. The workpiece 10 is heated by the heater 122, and the fillers 13 and 14 in the workpiece 10 are melted to cause a crosslinking reaction and harden.

  When the fillers 13 and 14 are cured and the lamination process is completed, the atmosphere is introduced into the lower chamber 121 and the upper case 110 is opened to atmospheric pressure. When the take-up roller 132 winds up the conveyance belt 130, the workpiece 10 advances to the left in FIG. 1, reaches the carry-out position, and is carried on the carry-out conveyor 300. Next, the upstream winding roller 131 winds the conveyance belt 130. When the winding is completed, the next workpiece 10 is received from the supply conveyor 200 and the above is repeated.

  When the lamination process is completed, the release sheet 140 is taken up by the take-up roller 142 in accordance with the movement of the transport belt 130 and moves to the standby position. After the workpiece 10 having been laminated is transferred to the carry-out conveyor 300, the take-up roller 141 rotates in accordance with the upstream take-up roller 131 taking up the conveying belt 130, and returns to the laminating position. Wait for the next workpiece 10 to be laminated.

  When the fillers 13 and 14 are heated and melted by the laminating apparatus 100, some of them flow out from the periphery of the back surface material 12 to the release sheet 140 and adhere to them. If left as it is, it will adhere to the next workpiece 10, which will cause dents in the back surface material 12 and cracks in the solar cells 18 caused by pressing the back surface material 12. Adversely affects.

  Further, when the release sheet 140 is taken up by the take-up roller 142 and moved to the standby position, a part of the deposit adheres to the back surface of the release sheet 140. Next, when the release sheet 140 returns to the laminating position, the adhering material melts and adheres to the diaphragm 112.

  The diaphragm 112 is made of a stretchable rubber material, and when an EVA deposit adheres to the diaphragm 112, it prevents the diaphragm 112 from being uniformly deformed during pressing. Furthermore, since the attached portion of the EVA deposit is solidified, the diaphragm 112 is easily damaged during repeated pressing. Further, when the release sheet adheres to the EVA attached to the diaphragm, the smooth advance / retreat of the release sheet 140 is hindered.

  Accordingly, in the present invention, the deposit removing means 150 is provided between the upper case 110 on the downstream side where the workpiece 10 is conveyed and the winding roller 142. The deposit removing means 150 includes a brush roller 151 provided on the front side of the release sheet 140, a sheet receiver 152 provided on the back side of the release sheet 140, and a deposit receiver provided below the brush roller 151. 153. The brush roller 151 is supported by the support arm 151a, and can be rotated by a motor in both directions indicated by solid lines and dotted lines. The contact pressure between the brush roller 151 and the release sheet 140 is adjusted by the force with which an adjuster 151 b such as an air cylinder presses the brush roller 151 against the sheet receiver 152.

  On the other hand, since the melted portions of the fillers 13 and 14 adhere to the conveyor belt 130, the belt cleaning means 160 is attached. The belt cleaning unit 160 has substantially the same configuration as the adhering matter removing unit 150, and a brush roller 161 that scrapes off adhering matter on the surface of the conveying belt 130, a belt receiver 162 provided on the back side of the conveying belt 130, And a deposit receiving member 163 provided below the brush roller 161. The brush roller 161 is supported by the support arm 161a, and can be rotated by a motor in both directions indicated by solid lines and dotted lines. The contact pressure between the brush roller 161 and the conveyor belt 130 is adjusted by the force with which an adjuster 161b such as an air cylinder presses the brush roller 161 against the belt receiver 162.

  When the winding roller 132 rotates and the conveying belt 130 is wound in the direction of the solid line arrow, the brush roller 161 also rotates in the direction of the solid line arrow. When the winding roller 131 rotates and the conveying belt 130 is wound in the direction of the dotted arrow, the brush roller 161 also rotates in the direction of the dotted arrow. By such rotation, at the position where the brush and the conveyor belt 130 are in contact with each other, the traveling direction of both is reversed, and the relative speed at which the brush scrapes off is increased so that the scraping can be performed effectively. The deposits scraped off by the brush roller 161 are collected by the deposit receiver 163.

  When the laminating process is completed, the upper and lower cases 110 and 120 are opened, the winding roller 132 of the conveyor belt 130 is rotated, the conveyor belt 130 advances in the direction of the solid arrow, and the workpiece 10 is transferred to the unloading conveyor 300. Then, it is discharged out of the laminating apparatus 100. At the same time, the winding roller 142 of the release sheet 140 is also rotated to move the release sheet 140 in the direction of the solid line. The brush roller 151 of the adhering matter removing means 150 and the brush roller 161 of the belt cleaning means 160 rotate in the direction of the solid arrow to scrape off adhering EVA adhering matter.

  The deposits scraped off by the brush rollers 151 and 161 are collected by the deposit receivers 153 and 163 so that the deposits do not adhere to the release sheet 140 and the conveyor belt 130 again. If the tip of the deposit receiving member 153 is the scraper 153a, the scraper 153a can scrape off the deposit.

  In the present invention, the deposit removing means 150 is disposed on the downstream side of the upper case 110 in the transport direction. Therefore, even if the adhered material scraped off is not collected by the adhered material receiving member 153 and falls downward, it only falls on the workpiece 10 that has been laminated, so that it can be easily removed. There is no reduction.

  The deposit removing means 150 of the release sheet 140 is provided on the downstream side of the laminating apparatus 100. This is because the release sheet 140 is on the upper side, and when the scraped deposit falls, the laminate is removed. This is because there is a possibility of dropping on the workpiece 10. On the other hand, since the conveyor belt 130 does not have such a problem, the belt cleaning unit 160 may be provided on the upstream side.

  FIG. 5 is a view showing a second embodiment of the laminating apparatus of the present invention. Here, the brush roller 151 of the deposit removing means 150 and the brush roller 161 of the belt cleaning means 160 are provided at positions facing the winding rollers 142 and 132, respectively. Thereby, the sheet receiver 152 and the belt receiver 162 can be omitted. Further, scraping off by the brush rollers 151 and 161 is performed on the curved surfaces of the winding rollers 142 and 132, and therefore, there is a feature that it is easy to peel off the adhered matter.

  FIG. 6 is a view showing a third embodiment of the laminating apparatus of the present invention. When the brush rollers 151 and 161 are provided only on the surfaces of the release sheet 140 and the conveyor belt 130 as in the first and second embodiments, the attached deposits cannot be completely removed and a part remains. There is a case. If the release sheet 140 or the conveyor belt 130 is wound up by the take-up rollers 132 and 142 while the attached matter remains, it causes the remaining attached matter to move to the back surface.

  The deposits transferred to the back surface adhere to the diaphragm 112 and the heater 122 when the next workpiece 10 is laminated. As described above, the material adhering to the back surface of the release sheet 140 may cause damage such as adhesion to the diaphragm 112 and deformation of the diaphragm 112, or contamination of the product. Further, if the deposit adheres to the back surface of the conveyor belt 130, the workpiece 10 floats up from the heater 122 when laminating, or the conveyor belt 130 and the heater 122 are bonded by the fillers 13 and 14. 130 cannot run. Therefore, in this embodiment, the brush rollers 151 and 161 are provided on both the front and back surfaces of the release sheet 140 and the conveyance belt 130. By providing it on both the front and back surfaces, it is possible to scrape off the deposits on the back surface. Moreover, the deposit | attachment receptacles 153 and 163 are also provided so that both front and back sides may be straddled. By using the scrapers 153a and 163a as the central portions of the deposit receivers 153 and 163, it is possible to improve the peeling of the deposits.

  FIG. 7 is a view showing a fourth embodiment of the laminating apparatus of the present invention. Since the deposits of the fillers 13 and 14 are heated by the laminating apparatus 100, they may not be solidified when they reach the brush roller 151 of the deposit removing means 150. If it is not solidified, it will not peel off even if it is rubbed with the brush roller 151. Therefore, in this embodiment, the cooling nozzle 170 is provided at a position before the peeling sheet 140 enters the deposit removing means 150, that is, between the deposit removing means 150 and the laminate unit 101. By blowing air onto the deposit W with the cooling nozzle 170, the deposit W is cooled and solidification is promoted, and is easily scraped off at the position of the brush roller 151. When the cooling nozzle 170 is provided at a position where the release sheet 140 and the workpiece 10 are separated from each other, that is, near the intermediate roller 144, an effect that the release sheet 140 and the workpiece 10 are separated is also improved. In the embodiment of FIG. 7, the belt cleaning unit 160 of the conveyance belt 130 does not have a cooling nozzle, but may be provided between the belt cleaning unit 160 and the laminating unit 101 as necessary.

  FIG. 8 is a view showing a fifth embodiment of the laminating apparatus of the present invention. In this embodiment, the take-up roller 142 of the release sheet 140 is shifted to the left, and the release sheet 140 is inclined and wound up. Further, the take-up roller 132 of the transport belt 130 is shifted to the right, and the transport belt 130 is inclined and wound. By tilting in this way, the deposits are easily peeled off.

  In the embodiment of the present invention, the conveyance belt 130 is of a take-up type, but the conveyance belt 130 may be an endless belt, such as when the heater 122 is an electric type. In that case, the filler does not adhere to the back surface of the conveyor belt, but adheres to the front surface. Therefore, a belt cleaning means only for the surface is necessary.

  In the embodiment of the present invention, there is only one brush roller 151, 161 along the conveyance direction of the release sheet 140 or the conveyance belt 130, but two or more brush rollers 151, 161 may be arranged along the conveyance direction. When two brush rollers 151 and 161 are provided side by side, it is preferable to use a brush having a difference in hardness. For example, the removal efficiency can be further improved by causing the first brush to cause the deposit W to cause the deposit W to be scraped off by the second brush. Although not shown, the brush roller 161 of the conveyance belt 130 can be disposed between the intermediate roller 133 and the winding roller 131. When the brush roller 161 is provided here, the conveyance surface can be cleaned during rewinding of the conveyance belt 130 or before entering the laminating process.

  In the present invention, although not shown, the downstream side of the brush rollers 151 and 161, that is, the rear side after the conveying belt 130 and the release sheet 140 have moved from the laminating position and passed through the deposit removing means 150 or the belt cleaning means 160. At this position, an adhesive roller in contact with the conveyance surface of the conveyance belt 130 or the surface side of the release sheet 140 may be provided. As the adhesive roller, there are a roller in which an adhesive rubber is wound around a metal outer surface, or a roller in which a long adhesive sheet is wound around the roller.

  The adhesive roller may be provided by extending the support arms 151a and 161a of the brush rollers 151 and 161 upward or on another support arm. Of course, it can also be provided in a structure that does not use a support arm. Further, the adhesive roller may include an advance / retract type adjuster mechanism.

  When the adhesive roller is provided, after the deposit W is removed by the brush rollers 151 and 161, the fine deposit that could not be dropped by the brush rollers 151 and 161 can be removed by the adhesive roller.

  In the present invention, a suction duct as a suction means (not shown) is provided in the vicinity of the brush rollers 151 and 161 together with or separately from the deposit receivers 153 and 163 for receiving deposits. Alternatively, a configuration in which a dust collector is connected may be adopted. When the deposit W is scraped off by the brush rollers 151 and 161, the dropped deposit is scattered by the rotation of the brush rollers 151 and 161. Due to this scattering, the deposit W may adhere to the conveyor belt 130 again. In order to avoid this, a suction duct can be provided to suck in the deposit W scattered by the dust collector and prevent it from adhering again to the release sheet 140 or the conveyor belt 130.

  Further, a brush roller scraper is also applied to the brush rollers 151 and 161 to prevent the adhering matter W scraped off from the brush rollers 151 and 161 from being wound around the roller or adhering to the roller surface. You may do it.

It is a figure which shows the structure of 1st Example of the laminating apparatus of this invention. It is sectional drawing which shows the structure of the solar cell module as a to-be-processed object. It is sectional drawing which shows the lamination part of a laminating apparatus. It is a figure which shows the state which laminates with the apparatus of FIG. It is a figure which shows 2nd Example of the lamination apparatus of this invention. It is a figure which shows 3rd Example of the lamination apparatus of this invention. It is a figure which shows 4th Example of the lamination apparatus of this invention. It is a figure which shows 5th Example of the lamination apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Workpieces 13 and 14 Filler 100 Laminating apparatus 101 Laminating part 112 Diaphragm 122 Heater 130 Conveying belts 131 and 132 Conveying belt moving means (winding roller)
140 Release sheet 141, 142 Release sheet moving means (winding roller)
150 Adhering substance removing means 151 Brush roller 153 Adhering substance receiving device 160 Belt cleaning means 170 Cooling nozzle

Claims (17)

  The work piece is fed into a laminate portion having a diaphragm and a heater, a release sheet is interposed between the diaphragm and the work piece, and the filler inside the work piece is melted by the diaphragm and the heater. A laminating apparatus that performs laminating processing by sandwiching a workpiece, wherein the release sheet is disposed between a laminating position where laminating is performed and a standby position deviated from the laminating position to the downstream side in the conveyance direction of the workpiece. The laminate is provided with a release sheet moving means that reciprocally moves, and at the position downstream of the laminate portion in the transport direction, an adherent removal means for removing the adherent attached to the release sheet is provided. apparatus.   The laminating apparatus according to claim 1, wherein the deposit removing means is a brush roller provided on both sides of the release sheet.   3. The laminating apparatus according to claim 2, wherein the contact pressure between the brush roller and the release sheet is adjusted by advancing and retracting an adjuster that supports the brush roller.   The laminating apparatus according to any one of claims 1 to 3, wherein the deposit removing means includes a deposit receiving unit that receives deposits removed from the release sheet.   The laminating apparatus according to any one of claims 1 to 4, wherein a cooling nozzle is provided between the deposit removing means and the laminating unit.   The laminating apparatus according to any one of claims 1 to 5, wherein an adhesive roller is provided at a rear position where the release sheet moves from the laminating position and passes through the deposit removing means.   The laminating apparatus according to claim 1, wherein a suction unit is provided in the vicinity of the deposit removing unit.   The laminating apparatus according to any one of claims 1 to 7, wherein the deposit removing means is provided in a portion where the release sheet is inclined.   The belt is provided with a belt cleaning means for removing the adhered matter adhered to the conveyor belt at a position where the workpiece is conveyed onto the heater by a conveyor belt and removed from the heater of the conveyor belt. Item 9. A laminating apparatus according to any one of Items 1 to 8.   A laminating apparatus that feeds a workpiece into a laminating section having a diaphragm and a heater, and laminates the workpiece by sandwiching the workpiece while melting the filler inside the workpiece with the diaphragm and the heater. The conveyor belt is provided with a conveyor belt moving means for reciprocating between a laminating position where laminating is performed and an unloading position deviating downstream from the laminating position in the conveying direction of the workpiece, A laminating apparatus characterized in that a belt cleaning means for removing adhering matter adhering to the conveying belt is provided at a position deviated from the section.   The laminating apparatus according to claim 10, wherein the belt cleaning means is a brush roller provided on both sides of the transport belt.   12. The laminating apparatus according to claim 11, wherein the contact pressure between the brush roller and the conveying belt is adjusted by advancing and retracting an adjuster that supports the brush roller.   The laminating apparatus according to any one of claims 10 to 12, wherein the belt cleaning means includes an adhering material receiving member that receives the adhering material removed from the conveyor belt.   The laminating apparatus according to any one of claims 10 to 13, wherein a cooling nozzle is provided between the belt cleaning means and the laminating portion.   The laminating apparatus according to any one of claims 10 to 14, wherein an adhesive roller is provided at a rear position where the conveying belt moves from the laminating portion and passes through the belt cleaning means.   The laminating apparatus according to any one of claims 10 to 15, wherein a suction unit is provided in the vicinity of the belt cleaning unit.   The laminating apparatus according to any one of claims 10 to 16, wherein the belt cleaning means is provided in a portion where the conveyor belt is inclined.

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