Photovoltaic module laminating machine and frame for supporting rubber plate during lamination

Abstract

The utility model aims to overcome the defects that when a multi-layer rubber plate type laminating machine in the prior art is used for laminating a photovoltaic module, the upper surface of the photovoltaic module is provided with rubber marks and defective products are generated because the upper surface of the photovoltaic module is rubbed by glue adhered on glass cloth, which is also used as a transmission belt and an isolation cloth piece, of two adjacent layers of laminating cavities. The utility model provides a photovoltaic module laminating machine and a frame for supporting a rubber plate during lamination, the frame comprises a frame body and further comprises a rubber isolating part, the rubber isolating part is a piece of high-temperature-resistant cloth which is rectangular on the whole, the photovoltaic module laminating machine comprises a top upper box and a bottom lower box, at least one middle unit is arranged between the top upper box and the bottom lower box, and the middle unit is arranged between the top upper box and the bottom lower box. When more than two middle units are arranged, by adopting the photovoltaic module laminating machine and the frame for supporting the rubber plate during lamination, other parts of the module are prevented from being rubbed by the pollution on the circulating belt after the glue is applied, the phenomenon that the pollution glue is applied on the circulating belt can be avoided, and the overflowing glue can be prevented from polluting other surfaces of the module.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic module laminating equipment technical field, especially related to a photovoltaic module laminating machine and frame for supporting rubber plate during laminating. BACKGROUND

[0002] In the process of encapsulating laminated photovoltaic module, a part of glue will overflow around the laminated photovoltaic module, in continuous production, in order to avoid the overflow glue to contaminate the photovoltaic module, the upper and lower surfaces of the module are covered with polytetrafluoroethylene glass cloth commonly known as high temperature resistant cloth during laminating encapsulation. Usually, the glass cloth under the photovoltaic module also serves as a conveying belt to convey the photovoltaic module and isolate the photovoltaic module from the laminating workbench during laminating. The glass cloth above can also run around the upper box, which facilitates the cleaning of the overflow glue adhered to the glass cloth. The overflow glue isolation device of this structure runs on the traditional multi-cavity laminating machine. Since the glass cloth above and the glass cloth below are two sets of circulation systems and are driven separately in the linkage transmission mode, the glass cloth on the upper and lower surfaces of the module is relatively stationary during transmission. The glue overflowed around the module and adhered to the glass cloth during the first cavity laminating process does not change its position during transmission, so it does not contaminate the module. It has very good effect of preventing glue contamination.

[0003] With the development of photovoltaic module laminating machine, high-efficiency multi-layer laminating machine has been invented. For multi-layer multi-cavity laminating machine, due to the space limitation of multi-layer laminating machine, it adopts the structure of stacking upper and lower laminating cavities. The workbench of the laminating cavity in the upper layer is also the upper box of the laminating cavity in the lower layer. Therefore, a glass cloth runs around the workbench of the upper laminating cavity and the lower box of the lower laminating cavity. This glass cloth is both the lower glass cloth of the laminating cavity above, serving as a transmission component to convey the photovoltaic module, and also the upper high temperature cloth of the laminating cavity below, used to isolate the laminating component in the upper box of the lower laminating cavity and the upper surface of the photovoltaic module. Since the adjacent upper and lower glass cloth circulation belts both convey the photovoltaic module, the glass cloth on the upper and lower surfaces of the photovoltaic module moves in opposite directions. Therefore, the circulation glass cloth of the upper and lower adjacent laminating cavities will be contaminated by the overflow glue during operation. The circulation glass cloth above will scratch the overflow glue adhered to its surface onto the upper surface of the photovoltaic module, forming glue marks and contaminating the photovoltaic module, resulting in defective photovoltaic modules and limiting the application of multi-layer high-efficiency laminating machine. SUMMARY

[0004] The utility model discloses a photovoltaic module laminating machine and frame for supporting rubber plate during laminating.

[0005] The technical scheme for solving the technical problems of the utility model is as follows:

[0006] A frame for supporting rubber plate during laminating, comprising frame body, further comprising rubber separating component, the rubber separating component is high temperature resistant cloth that is overall rectangular, the periphery of rubber separating component is fixedly connected with the upper surface or the inner periphery of frame body, the part in the inner side of frame body constitutes cover part, or the rubber separating component is rectangular ring body, the outer periphery is fixedly connected with the upper surface or the four inner sides of frame body, and the inner periphery is located in the frame of frame body, covers the four sides of hollow part of frame body and constitutes cover part, and the cover part is used for covering the overflowed rubber when laminating module,

[0007] The four corners of rectangular ring body are in triangular shape, so that the quadrilateral ring structure of rubber separating component becomes octagonal ring structure.

[0008] The right angle press corner is located above rubber separating component, and the right angle press corner is fixedly connected with frame body through riveting;

[0009] The auxiliary cover part in strip shape is arranged between two oppositely arranged frame strips, and the two ends of cover part are fixedly connected with the frame body of corresponding side respectively.

[0010] The auxiliary cover part is in cross structure, and the four ends of auxiliary cover part are fixedly connected with frame body through riveting or bonding.

[0011] The high temperature resistant cloth is glass fiber cloth that is coated with polytetrafluoroethylene coating on the surface, and the polytetrafluoroethylene coating is oppositely arranged with the upper surface of frame body.

[0012] A photovoltaic module laminator comprises a top upper box, a bottom lower box, and at least one intermediate unit arranged between the top upper box and the bottom lower box, when more than two intermediate units are arranged, each intermediate unit is arranged in layers, each intermediate unit comprises an upper cavity body, a rubber plate and a laminating workbench, the rubber plate closes the opening of the upper cavity body, the upper cavity body and the laminating workbench are fixed in position, a heating body is arranged in the laminating workbench, the upper cavity body is above the laminating workbench, a rubber plate is arranged at the opening below the top upper box, when the laminator is closed, the top upper box and the laminating workbench on the uppermost layer are closed to form a sealed cavity, the bottom lower box and the upper cavity body on the lowermost layer are closed to form a sealed cavity, the upper cavity body and the laminating workbench of adjacent layers of intermediate units are closed to form a sealed cavity, the rubber plate divides the sealed cavity into upper and lower cavities which are independent and sealed, circulating belt driving rollers are arranged in front of and behind the intermediate unit respectively, a circulating belt is used to transport modules and is wound around the intermediate unit by winding around the circulating belt driving rollers, the lower part of the circulating belt is below the rubber plate of the intermediate unit around which the circulating belt is wound, and a frame is further arranged, the frame comprises a frame body, the frame body is sleeved on the module to be laminated to support the rubber plate, the frame is used, the covering part of the rubber isolation part is used to cover the upper surface or the edge of the sleeved module, and the frame body and the rubber isolation part are below the lower part of the circulating belt.

[0013] The top upper box is provided with upper cloth fixing rollers at the front and back, high-temperature-resistant cloth is fixedly arranged between the upper cloth fixing rollers, and the two ends of the high-temperature-resistant cloth are fixedly connected with the upper cloth fixing rollers.

[0014] The bottom lower box is provided with circulating belt driving rollers at the front and back, and the circulating belt is wound around the front and back of the bottom lower box by winding around the circulating belt driving rollers.

[0015] The upper cavity and the lower cavity are connected with vacuumizing devices and inflating devices respectively, the upper cavity and the lower cavity are vacuumized through the vacuumizing devices, and the upper cavity and the lower cavity are inflated through the inflating devices.

[0016] The frame for supporting the rubber plate during lamination has the advantages and beneficial effects that:

[0017] The frame for supporting the rubber plate during lamination has the advantages and beneficial effects that:

[0018] The laminator of this invention has an adhesive-separating component on the frame. The covering part of the adhesive-separating component is used to cover the upper surface or edge of the assembled component. The frame body and the adhesive-separating component are located below the lower part of the circulating belt. Therefore, during lamination, the adhesive-separating component isolates the overflowing adhesive part of the component from the circulating belt. The adhesive overflowing from the component is blocked by the adhesive-separating component and will not contaminate the circulating belt. This avoids the phenomenon of adhesive contamination on the circulating belt and prevents overflowing adhesive from contaminating other parts of the component. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the frame of the present invention used to support the adhesive sheet during lamination.

[0020] Figure 2 for Figure 1 A reverse side diagram;

[0021] Figure 3 This is a schematic front view of another embodiment of the frame for supporting the adhesive sheet during lamination according to this utility model;

[0022] Figure 4 for Figure 3 Rear view schematic diagram;

[0023] Figure 5 In order to be in Figure 4 A schematic diagram of another embodiment of a frame for supporting the adhesive sheet during lamination, with a riveting structure provided on the basis;

[0024] Figure 6 This is a three-dimensional structural diagram of another embodiment of the frame for supporting the adhesive sheet during lamination according to the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of an embodiment of the laminator of this utility model, which is in the open state;

[0026] Figure 8 for Figure 7 A schematic diagram of the laminator in its closed state.

[0027] Explanation of reference numerals in the attached figures

[0028] 1-Glue-proof component, 2-Frame body, 3-Rivet, 4-Corner cover, 5-Reinforcing strip, 6-Corner press, 7-Cover part, 8-Auxiliary cover part.

[0029] 101-Top upper box, 102-Glue plate, 103-Heating body, 104-Upper part of circulating belt, 105-Upper fixed high temperature cloth, 106-Upper cloth fixing roller, 107-Circulating belt drive roller, 108-Circulating belt, 109-Lower part of circulating belt; Detailed Implementation

[0030] The utility model will be further described below by specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

[0031] As shown in Figures 1-8 The efficient photovoltaic module is mostly double-glass module. At present, the double-glass module is generally pressed by a rubber plate type laminator. The rubber plate type laminator uses a rubber plate 102 as a pressing component, and a laminating workbench as a support component of the photovoltaic module. A heating main body 103 is arranged in the laminating workbench. The laminator includes an upper box and a lower box. The rubber plate is arranged on the upper box. The upper box and the lower box are closed and separated into two sealed chambers by the rubber plate. The upper chamber is above the rubber plate, and the lower chamber is below the rubber plate. The upper chamber is communicated with a gas supply device and a vacuum pumping device. The lower chamber is communicated with the vacuum pumping device and a filling device. During lamination, the upper chamber needs to be filled with air. Since the rubber plate is a flexible material, the rubber plate is bent downward around the edges of the module, that is, around the four sides of the glass under the double actions of the vacuum in the lower box and the air pressure in the upper box. The direction of the force is changed, which causes the lack of rubber on the edges of the module, especially the corners, resulting in quality defects. Therefore, most module manufacturers add a frame (also called a pressing frame) around the edges of the module to be packaged during packaging to support the rubber plate. The bending part of the rubber plate is pressed around the corners of the frame, instead of around the corners of the glass, so as to avoid the above problems. This technology has been applied in the industry as a mature technology. The utility model is improved on the basis of such a laminator to prevent the photovoltaic module from being polluted by the overflow of the rubber on the glass cloth during lamination of the multi-layer laminator.

[0032] The rubber plate type laminator is divided into a single-layer laminator and a multi-layer laminator. The foregoing structure is a single-layer laminator. As shown in Figure 7 and 8As shown, for the multi-layer laminating machine, including the top upper box and the bottom lower box, at least one intermediate unit is arranged between the top upper box 101 and the bottom lower box, when there are two or more intermediate units, each intermediate unit is arranged in layers, each intermediate unit comprises an upper cavity body, a rubber plate 102 and a laminating workbench, a heating main body 103 is arranged in the laminating workbench for heating the photovoltaic module, the upper cavity body is located below the laminating workbench and is fixed in position, the rubber plate is fixedly arranged below the lower cavity body, when the laminating machine is closed, the upper cavity body and the laminating workbench form a sealed cavity, the rubber plate divides the sealed cavity into independent and sealed upper cavities and lower cavities, the lower cavity body and the laminating workbench are surrounded by a circulating belt 108, circulating belt drive rollers 107 are arranged in front of and behind the intermediate unit, the circulating belt drive rollers support the circulating belt, a rubber plate is also arranged in the top upper box (for the sake of description, the rubber plate located in the top upper box will be referred to as the top rubber plate), the top rubber plate seals the opening of the top upper box, an upper fixed high-temperature cloth 105 is arranged below the top upper box, the upper fixed high-temperature cloth is fixedly supported by an upper cloth fixing roller 106, the upper fixed high-temperature cloth is located below the top rubber plate, the bottom lower box is provided with a laminating workbench, and the bottom lower box is also provided with a circulating belt 108, the circulating belt surrounds the bottom lower box, so that, when the laminating machine is closed, the laminating workbench of the intermediate unit located in the uppermost layer forms a sealed cavity with the top upper box, the upper cavity body of the intermediate unit located in the lowermost layer forms a sealed cavity with the bottom lower box, the upper cavity body and the laminating workbench of the adjacent intermediate unit form a sealed cavity, and the sealed cavities of each layer are divided into sealed upper cavities and sealed lower cavities that are not connected to each other by the rubber plates of the corresponding layer. Each circulating belt is connected to a driving device, and the circulating belt is driven by the driving device to circulate in the feeding direction to the discharging direction, that is, the running directions of the circulating belts are consistent, and the upper part 104 of the circulating belt of each layer is used to transport the photovoltaic module, the frame for supporting the rubber plate is located below the rubber plate and below the lower part 109 of the circulating belt. For the multi-layer laminating machine, the upper cavities of each layer also communicate with the vacuum pumping device and the gas filling device, respectively. The frame of the utility model comprises a frame body 2 and a rubber isolation component 1 fixedly connected with the frame body, the frame body is a rectangular frame body as a whole, which is used to be sleeved outside the photovoltaic module when laminating the photovoltaic module, and support the rubber plate for pressing the photovoltaic module. The rubber plate itself has elasticity, which can prevent the elastic rubber plate from bending downward along the periphery of the photovoltaic module under the action of vacuum adsorption, so that the direction of the rubber plate changes and causes quality defects of the photovoltaic module due to lack of glue on the edge. The rubber isolation component can be a non-elastic high-temperature cloth or an elastic high-temperature cloth, and a glass fiber cloth coated with Teflon, also known as polytetrafluoroethylene, is preferably used, so that the surface in contact with the module is smooth and easy to clean the glue.The glue isolation part can be a whole rectangular cover cloth or a rectangular ring cover cloth. When the glue isolation part is a whole rectangle, the cloth material used is more, but the covering effect of the photovoltaic module is better. The glue isolation part covers the upper surface of the frame body, is fixedly connected with the upper surface of the frame body through the four peripheral parts, and covers the hollow part of the frame body. Since the high-temperature-resistant cloth material is thin and soft, the glue plate will not affect the pressure of the photovoltaic module. The glue isolation part can also be fixedly arranged on the inner side surface of the frame body through riveting or bonding. When the glue isolation part is a whole rectangular ring structure, the outer periphery of the glue isolation part is fixedly connected with the upper surface or the four inner sides of the frame body, and the inner periphery is located in the frame of the frame body and covers the four peripheries of the hollow part of the frame body to form a covering part 7. The width of the covering part can cover the overflow glue part of the photovoltaic module. The outer periphery of the glue isolation part is fixedly connected with the frame body through bonding or riveting. Similarly, the area of the rectangular high-temperature-resistant cloth between the frame bodies also forms a covering part 7. The glue isolation part is preferably made of high-temperature-resistant glass fiber cloth with a coating structure. The material is consistent with the high-temperature-resistant cloth conveying belt used by the laminating machine to convey the photovoltaic module. The coating is generally a Teflon coating. The side surface of the coating faces the photovoltaic module, that is, the side surface of the coating is opposite to the frame body. Since the coating is used, the glue overflowed on the photovoltaic module can be easily cleaned. The inner side of the four corners of the covering part can be provided with a corner structure to form a corner covering part 4, so that the inner periphery of the whole glue isolation part forms an octagon. By using this structure, the area of the part of the covering part at the corner is increased, and a larger covering area can be provided for the four corners of the photovoltaic module to solve the problem of excessive glue overflow at the four corners of the photovoltaic module. Moreover, when the photovoltaic module is covered, the four corners of the photovoltaic module can be better covered, avoiding that the covering part at the four corners is separated from the photovoltaic module or cannot completely cover the overflowed glue under the action of vacuum suction. Under the condition that the width of the covering part is the same, the glue isolation effect is better, and the use of cloth material can be saved as a whole. Since the wiring part of the photovoltaic module is prone to glue leakage, when a whole rectangular frame structure is used, an auxiliary covering part 8 is arranged at the position corresponding to the wiring part. The auxiliary covering part 8 can be in a strip shape, and the two ends thereof are fixedly connected with two corresponding sides of the glue isolation part, or the auxiliary covering part 8 is made into a cross structure, and the four ends thereof are fixedly connected with the four rectangular sides. The two ends or four ends of the auxiliary covering part are fixedly connected with the frame body through riveting or bonding, and can also serve as a reinforcing belt of the frame body. In order to prevent the glue isolation part from falling off under the action of the adhesive force when the frame is removed, a corner pressing part 6 is arranged at the corner of the frame body. The corner pressing part 6 is in a straight edge shape, the corner pressing part 6 is located above the glue isolation part, can be a sleeve corner of a straight edge, and is a hard part when the sleeve corner structure is used. The corner pressing part is bonded to the corner of the frame body through sleeve connection, one corner pressing part is sleeved on each corner, or the corner pressing part can be a straight edge piece and is arranged above the glue isolation part through riveting of the frame body.The structure increases the connection firmness of the four corners of the isolation component and the frame body, and since the overflow is large, the stress is large, thus preventing the isolation component from being separated from the frame body due to the large bonding force at the corners of the photovoltaic assembly, increasing the strength, preventing the corners from being damaged first, increasing the service life of the frame.

[0033] When the laminating machine is running, the circulating belt runs around, the upper part of the circulating belt conveys the photovoltaic assembly to a position, and the frame of the utility model structure is arranged on the outer sleeve of the photovoltaic assembly, so that the covering part of the frame covers the overflow glue part of the photovoltaic assembly, the lower part of the circulating belt or the upper fixed high-temperature cloth is located between the glue plate and the frame, then the laminating main machine is closed, the upper cavity and the lower cavity of each layer are closed, vacuum is drawn on the lower cavity of each layer, and the upper cavity of each layer is inflated to apply pressure, when the pressure is applied, the overflow glue of the photovoltaic assembly is shielded by the covering part of the frame and cannot contact the lower part of the circulating belt, thus the lower part of the circulating belt cannot stick to the overflow glue, when the cover is opened and the material is discharged, the part of the lower part of the circulating belt in contact with the upper surface of the photovoltaic assembly has no overflow glue, and the part with overflow glue is also shielded by the covering part of the frame and cannot be stained with glue, thus the surface of the photovoltaic assembly cannot be stained with overflow glue, when the photovoltaic assembly is transmitted to the lower curing cavity, the position without overflow glue of the photovoltaic assembly cannot be polluted since the isolation component of the frame is always used for protection, when the curing is completed, the frame is removed, and since the glue has been cured, the overflow glue cannot pollute again.

Claims

1. A frame for supporting a rubber sheet during lamination, comprising a frame body, characterized in that: The glue isolation component is a high-temperature-resistant cloth in a rectangular shape, and a periphery of the glue isolation component is fixedly connected with an upper surface or an inner periphery of the frame body. A part of the glue isolation component located on an inner side of the frame body forms a covering part.

2. A frame for supporting a rubber sheet during lamination as claimed in claim 1, wherein: The four corners of the rectangular ring-shaped body are in a triangular shape, so that the glue isolation component is changed from a quadrilateral ring-shaped structure to an octagonal ring-shaped structure.

3. A frame for supporting a rubber sheet during lamination according to claim 1 or 2, wherein A right-angle pressing corner is arranged at each of four corners of the frame body along two straight-angle sides of the frame body. The pressing corner is located above the glue isolation component, and the pressing corner is fixedly connected with the frame body by riveting.

4. The frame for supporting a rubber plate during lamination according to claim 1, wherein: A strip-shaped auxiliary covering part is arranged between two oppositely arranged frame strips. Two ends of the auxiliary covering part are fixedly connected with the frame bodies on the corresponding sides, respectively.

5. A frame for supporting a rubber sheet during lamination as claimed in claim 4 wherein: The auxiliary covering part is in a cross structure, and four ends of the auxiliary covering part are fixedly connected with the frame bodies by riveting or bonding.

6. A frame for supporting a rubber sheet during lamination as defined in claim 1, wherein: The high-temperature-resistant cloth is a glass fiber cloth coated with a polytetrafluoroethylene coating on a surface. The polytetrafluoroethylene coating is arranged opposite to the upper surface of the frame body.

7. A photovoltaic module laminator, comprising a top upper box, a bottom lower box, and at least one intermediate unit arranged between the top upper box and the bottom lower box, when more than two intermediate units are arranged, each intermediate unit is arranged in layers one above another, each intermediate unit comprises an upper cavity body, a rubber plate and a lamination workbench, the rubber plate seals the opening of the upper cavity body, the upper cavity body and the lamination workbench are fixed in position relative to each other, a heating body is arranged in the lamination workbench, the upper cavity body is above the lamination workbench, a rubber plate is arranged at the opening below the top upper box, when the laminator is closed, the top upper box and the lamination workbench in the uppermost layer are closed to form a sealed cavity, the bottom lower box and the upper cavity body in the lowermost layer are closed to form a sealed cavity, the upper cavity body and the lamination workbench of adjacent layers of intermediate units are closed to form a sealed cavity, the rubber plate divides the sealed cavity into independent and sealed upper and lower cavities, a circulating belt drive roller is arranged in front of and behind each intermediate unit, a circulating belt used for transporting modules passes around the circulating belt drive roller to thereby pass around the intermediate unit, the lower part of the circulating belt is below the rubber plate of the intermediate unit around which the circulating belt passes, and the laminator further comprises a frame, the frame comprises a frame body, the frame body is sleeved on the modules being laminated to support the rubber plate during lamination, and the laminator is characterized in that: The frame body and the glue isolation component are located below the lower part of the circulating belt.

8. A photovoltaic module laminator as defined in claim 7, wherein, The front and rear of the upper box are respectively provided with upper cloth fixing rollers. A high-temperature-resistant cloth is fixedly arranged between the upper cloth fixing rollers. Two ends of the high-temperature-resistant cloth are fixedly connected with the upper cloth fixing rollers, respectively.

9. A photovoltaic module laminator as defined in claim 7, wherein, The front and rear of the lower box are respectively provided with circulating belt driving rollers. The circulating belt is arranged around the front and rear of the lower box by surrounding the circulating belt driving rollers.

10. A photovoltaic module laminator as defined in claim 7, wherein, The upper cavity and the lower cavity are respectively connected with a vacuum pumping device and an air charging device. The vacuum pumping device is used to pump vacuum for the upper cavity and the lower cavity. The air charging device is used to charge air for the upper cavity and the lower cavity.

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