Adhesive film welding device

Abstract

The utility model discloses an adhesive film welding device which comprises a bearing mechanism and a welding mechanism, the bearing mechanism is used for bearing a to-be-welded assembly, and the to-be-welded assembly comprises a glass plate and an adhesive film arranged on the upper surface of the glass plate. The welding mechanism comprises a hot melting assembly, the hot melting assembly comprises at least one heating piece and at least one heat conduction piece connected with the heating piece in a heat conduction mode, and the heat conduction piece is located above the to-be-welded assembly and connected with the to-be-welded assembly in a heat conduction mode so that heat generated by the heating piece can be conducted to a to-be-welded area of the to-be-welded assembly. According to the hot melting assembly, the adhesive film which is cut and laid on the glass plate can be heated, so that the adhesive film in the area to be welded is fixed to the glass plate after being heated and cured, and slippage between the adhesive film and the glass plate in the conveying process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic manufacturing, and specifically relates to a film welding device. Background Art

[0002] TOPCon (Tunnel Oxide Passivated Contact) cell is a crystalline silicon solar cell with good surface passivation performance, which can greatly reduce the metal contact recombination current and improve the open circuit voltage and short circuit current of the cell.

[0003] During the manufacturing process of TOPCon batteries, the adhesive film is laid on the glass plate after being cut, and then the glass plate is transported to other workstations via a conveyor line for subsequent processing. During the transportation process, the assembly line cannot maintain a uniform speed and often accelerates and decelerates. The adhesive film laid on the surface of the glass plate is prone to slippage, resulting in substandard layout accuracy of the TOPCon battery, substandard string spacing, and substandard thickness of the adhesive film at the edge of the glass plate after lamination.

[0004] The existing technology can add a pause delay after a cut to allow the film to fully contact the glass plate and increase the friction between the two to reduce the probability of film slippage, or reduce the acceleration by extending the acceleration and deceleration time of the conveyor line to reduce the probability of film slippage. However, these methods cannot fundamentally solve the problem of film slippage and will also affect production efficiency.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a film welding device, which can heat and cool a film cut and laid on a glass plate to solidify it, so as to fix the film to the glass plate and avoid slippage between the film and the glass plate during transportation.

[0007] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides an adhesive film welding device, including a bearing mechanism and a welding mechanism, the bearing mechanism is used to bear the component to be welded, the component to be welded includes a glass plate and an adhesive film arranged on the upper surface of the glass plate. The welding mechanism includes a hot melt component, the hot melt component includes at least one heating element and at least one heat conductive element thermally connected to the heating element, the heat conductive element is located above the component to be welded and is thermally connected to the component to be welded, so as to conduct the heat generated by the heating element to the to-be-welded area of ​​the component to be welded.

[0008] In one or more embodiments of the present invention, the adhesive film welding device includes two welding mechanisms, and the two welding mechanisms are respectively arranged on two sides of the supporting mechanism.

[0009] In one or more embodiments of the present invention, the supporting mechanism includes several conveyor belts for driving the components to be welded to move along the first direction. The two welding mechanisms are staggered along the first direction and the second direction. The first direction is the transmission direction of the conveyor belt, and the second direction is perpendicular to the first direction.

[0010] In one or more embodiments of the present invention, the welding mechanism further includes a cooling component, the cooling component includes at least one cold air pipe, and the air outlet of the cold air pipe faces the to-be-welded area of ​​the to-be-welded component.

[0011] In one or more embodiments of the present invention, the adhesive film welding device further includes an adjusting mechanism and a bracket, the adjusting mechanism is connected to the supporting mechanism via the bracket, the adjusting mechanism includes a linear moving component, and the linear moving component is used to drive the welding mechanism to move along the first direction.

[0012] In one or more embodiments of the present invention, the adjusting mechanism also includes a rotating component, which is mounted on the linear moving component and moves synchronously with the linear moving component. The rotating component includes a rotating arm connected to the welding mechanism, and the rotating component is used to drive the welding mechanism to rotate in a plane perpendicular to or parallel to the component to be welded.

[0013] In one or more embodiments of the present invention, the hot melt assembly also includes an extension piece, one end of which is connected to the rotating arm, and the other end extends away from the rotating arm and is connected to the heat conductor, and the extension direction of the extension piece is perpendicular to the extension direction of the rotating arm.

[0014] In one or more embodiments of the present invention, the rotating arm includes a first rotating arm and a second rotating arm that rotate synchronously and are arranged at intervals. The welding mechanism also includes a cooling component. The rotating end of the first rotating arm is connected to the hot melt component, and the rotating end of the second rotating arm is connected to the cooling component. A first thermal insulation member is provided between the first rotating arm and the second rotating arm.

[0015] In one or more embodiments of the present invention, the first end of the extension piece is connected to the first thermal insulation piece.

[0016] In one or more embodiments of the present invention, a second heat insulating member is disposed at the second end of the extending member, and the heat conducting member is connected to the heat conducting member via the second heat insulating member.

[0017] In one or more embodiments of the present invention, the hot melt assembly further includes a temperature measuring device connected to the heat conductor.

[0018] In one or more embodiments of the present invention, the adhesive film welding device further includes a heat insulating shield wrapping the welding mechanism.

[0019] Compared with the prior art, the adhesive film welding device in the utility model can heat a piece of adhesive film cut and laid on a glass plate through a hot melt component, and use a cooling component to cool and solidify the area to be welded, so that the adhesive film in the area to be welded is fixed to the glass plate, avoiding slippage between the adhesive film and the glass plate during subsequent transportation.

[0020] Furthermore, the linear moving component in the utility model can adjust the distance between the hot melt component and the cooling component and the supporting mechanism, so that the film welding device in the utility model can weld films of different sizes, thereby improving the compatibility of the film welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a three-dimensional structural diagram of a film welding device in a specific embodiment of the utility model;

[0023] Figure 2 It is a three-dimensional structural diagram of a film welding device and components to be welded in a specific embodiment of the utility model;

[0024] Figure 3 It is a three-dimensional structural diagram of a welding mechanism, an adjusting mechanism and a bracket in a specific embodiment of the utility model;

[0025] Figure 4 It is a side view structural diagram of a welding mechanism and an adjusting mechanism in a specific embodiment of the utility model;

[0026] Figure 5 It is a three-dimensional structural diagram of a welding mechanism and an adjusting mechanism in a specific embodiment of the utility model;

[0027] Figure 6 It is an exploded structural diagram of a welding mechanism and a heat insulation shield in a specific embodiment of the utility model.

[0028] Explanation of main figure marks: 1. Carrying mechanism, 11. Conveyor belt, 12. Frame, 2. Welding mechanism, 21. Hot melt component, 211. Heating element, 212. Heat conducting element, 213. Extension element, 214. Temperature measuring device, 22. Cooling component, 221. Cold air pipe, 222. Air inlet connector, 3. Adjusting mechanism, 31. Linear moving component, 311. Fixed rod, 312. Fixed plate, 313. Screw, 314. Moving plate, 32. Rotating component, 321. Rotating cylinder, 322. Rotating arm, 3221. First rotating arm, 3222. Second rotating arm, 4. Bracket, 5. First thermal insulation component, 6. Thermal insulation shield, 7. First supporting wheel, 8. Second supporting wheel, 9. Component to be welded, 10. Second thermal insulation component. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "up", "down", "front", "back", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] Ginseng Figure 1 , Figure 2 and Figure 6 As shown, the adhesive film welding device in a specific embodiment of the utility model includes a carrying mechanism 1 and a welding mechanism 2.

[0032] The carrying mechanism 1 is used for carrying the component to be welded 9, and the component to be welded 9 comprises a glass plate and an adhesive film arranged on the upper surface of the glass plate.

[0033] The welding mechanism 2 includes a hot melt component 21, which includes a heating element 211 and a heat-conducting element 212 thermally connected to the heating element 211. The heat-conducting element 212 is located above the component 9 to be welded and thermally connected to the component 9 to be welded so as to conduct the heat generated by the heating element 211 to the welding area of ​​the component 9 to be welded.

[0034] Preferably, Figure 2As shown, the carrying mechanism 1 in this embodiment includes a conveyor belt 11, a conveyor roller for tensioning the conveyor belt 11, and a frame 12 for fixing the conveyor roller. While carrying the component 9 to be welded, the conveyor belt 11 can also drive the component 9 to be welded to move back and forth along the first direction, adjust the position of the component 9 to be welded, and correct the component 9 to be welded. Figure 1 and Figure 2 As shown, the first direction is the X-axis direction in the figure.

[0035] In addition, after the supporting mechanism 1 in this embodiment is connected to the main conveyor line of the photovoltaic production line, the welding component 9 can be directly conveyed to the main conveyor line after the welding is completed.

[0036] Ginseng Figures 1 to 3 As shown, the adhesive film welding device in this embodiment also includes an adjusting mechanism 3 and a bracket 4. The adjusting mechanism 3 is connected to the supporting mechanism 1 through the bracket 4. The adjusting mechanism 3 includes a linear moving component 31. The linear moving component 31 is used to drive the welding mechanism 2 to move along the first direction and adjust the position of the welding mechanism 2 so that the welding mechanism 2 can heat and cool the adhesive films of the components 9 to be welded with different sizes.

[0037] Specifically, the linear moving assembly 31 in this embodiment includes two fixed rods 311, two fixed plates 312, a screw rod 313 and a movable plate 314, wherein the two fixed rods 311 are arranged in parallel up and down and one end is fixedly connected to the bracket 4, the two fixed plates 312 are fixed on the two fixed rods 311 along the axial interval of the fixed rods 311, the two ends of the screw rod 313 are respectively connected to the two fixed plates 312, the movable plate 314 is passed through by the screw rod 313 and the fixed rod 311, and the movable plate 314 can move along the fixed rod 311 under the drive of the screw rod 313, and the axis of the fixed rod 311 is parallel to the first direction.

[0038] Further, see Figures 4 to 6 As shown, the adjusting mechanism 3 in this embodiment further includes a rotating assembly 32, which is mounted on the linear moving assembly 31 and moves synchronously with the linear moving assembly 31. The rotating assembly 32 is used to drive the welding mechanism 2 to rotate in a plane perpendicular to the component 9 to be welded.

[0039] Specifically, the rotating assembly 32 in this embodiment includes a rotating cylinder 321 and a rotating arm 322 . The rotating cylinder 321 is fixedly mounted on the moving plate 314 . One end of the rotating arm 322 is connected to the rotating shaft of the rotating cylinder 321 , and the other end is connected to the welding mechanism 2 .

[0040] After the component 9 to be welded is welded, the rotating assembly 32 in this embodiment can rotate the welding mechanism 2 to the bottom of the component 9 to be welded, so as to prevent the welding mechanism 2 from obstructing the component 9 to be welded from being transported to the main conveying line.

[0041] In order to ensure the stability of the connection between the adhesive film and the glass plate, multiple parts of the adhesive film can be heated to form multiple welding parts on the adhesive film to improve the connection strength between the adhesive film and the glass plate. Figure 1 and Figure 2 As shown, the adhesive film welding device in this embodiment includes two welding mechanisms 2 , and the two welding mechanisms 2 are respectively arranged on both sides of the supporting mechanism 1 .

[0042] Furthermore, considering that the carrying mechanism 1 is connected to the main conveyor line of the photovoltaic production line, two welding mechanisms 2 are arranged on both sides of the conveyor belt 11 along the first direction, and the two welding mechanisms 2 are staggered along the first direction and the second direction. The first direction is the transmission direction of the conveyor belt, and the second direction is perpendicular to the first direction. Figure 1 and Figure 2 As shown in the figure, the X-axis is the first direction, and the Y-axis perpendicular to the X-axis is the second direction. The two welding mechanisms 2 in this embodiment are staggered in the X-axis direction and are also staggered in the Y-axis direction.

[0043] Ginseng Figure 6 As shown, in order to quickly solidify the hot-melted portion of the adhesive film and quickly fuse the portion to the glass plate, the welding mechanism 2 in this embodiment also includes a cooling component 22, and the cooling component 22 includes a cold air pipe 221. The air outlet of the cold air pipe 221 faces the to-be-welded area of ​​the to-be-welded component 9 to cool and solidify the hot-melted portion of the adhesive film.

[0044] It should be understood that the cold air pipe 221 in this embodiment is used to transport cold air and needs to be connected to an external cold air source.

[0045] Ginseng Figure 5 and Figure 6 As shown, the hot melt assembly 21 in this embodiment further includes an extension piece 213, one end of the extension piece 213 is connected to the rotating arm 322, and the other end extends in a direction away from the rotating arm 322 and is connected to the heat conducting member 212, and an angle exists between the extension direction of the extension piece 213 and the extension direction of the rotating arm 322. Preferably, the extension piece 213 in this embodiment is perpendicular to the rotating arm 322.

[0046] Furthermore, the rotating arm 322 in this embodiment includes a first rotating arm 3221 and a second rotating arm 3222 that rotate synchronously and are arranged at intervals. The welding mechanism 2 in this embodiment also includes a cooling component 22. The rotating end of the first rotating arm 3221 is connected to the hot melt component 21, and the rotating end of the second rotating arm 3222 is connected to the cooling component 22. A first thermal insulation component 5 is provided between the first rotating arm 3221 and the second rotating arm 3222.

[0047] In this embodiment, the length of the first rotating arm 3221 is smaller than that of the second rotating arm 3222 , and the first thermal insulation member 5 is arranged at the rotating end of the first rotating arm 3221 . One side of the first thermal insulation member 5 extends to the second rotating arm 3222 and wraps a portion of the second rotating arm 3222 .

[0048] Ginseng Figure 6 As shown, the cooling assembly 22 in this embodiment also includes an air intake channel and an air intake connector 222. The air intake channel is arranged in the second rotating arm 3222. The air intake connector 222 is installed on the surface of the second rotating arm 3222 and is connected to the air intake channel. The air intake connector 222 is used to connect to an external cold air source. One end of the cold air pipe 221 is connected to the second rotating arm 3222 and is connected to the air intake channel.

[0049] The extension member 213 in this embodiment is thermally insulated with the rotating arm 322 and the heat conducting member 212. Figure 6 As shown, the extension piece 213 in this embodiment is connected to the first thermal insulation piece 5 at the end of the first rotating arm 3221, a second thermal insulation piece 10 is arranged between the extension piece 213 and the heat conducting piece 212, and the extension piece 213 is connected to the heat conducting piece 212 through the second thermal insulation piece 10.

[0050] Preferably, the first thermal insulation member 5 and the second thermal insulation member 10 in this embodiment are both made of thermal insulation mica.

[0051] Ginseng Figure 5 and Figure 6 As shown, the hot melt assembly 21 in this embodiment further includes a temperature measuring device 214 connected to the heat conducting member 212, for real-time detection of the temperature of the heat conducting member 212. Preferably, the temperature measuring device 214 in this embodiment is a thermocouple.

[0052] Ginseng Figure 5 and Figure 6 As shown, the adhesive film welding device in this embodiment further includes a heat insulation shield 6 that wraps the welding mechanism 2 and is used to reduce heat transfer between the welding mechanism 2 and the outside.

[0053] Ginseng Figure 4 and Figure 5 As shown, the film welding device in this embodiment also includes a first support wheel 7 and a second support wheel 8 for supporting the component to be welded 9, wherein the first support wheel 7 is installed on the top fixed rod 311 and can move along the fixed rod 311, and the second support wheel 8 is installed on the movable plate 314.

[0054] Of course, in the above embodiment, the linear moving component 31 adopts a linear movement method driven by the screw rod 313. In other embodiments, other structures may also be used, such as a linear motor, a cylinder, an electric cylinder, and a hydraulic cylinder, etc., which will not be listed one by one here.

[0055] In the above embodiment, the rotating plane of the rotating component 32 is perpendicular to the plane of the component 9 to be welded. In other embodiments, the rotating component 32 drives the welding mechanism 2 to rotate in a plane parallel to the component 9 to be welded, and the rotating arm 322 of the rotating component 32 is located above the component 9 to be welded as a whole.

[0056] In the above embodiment, the first thermal insulation member 5 and the second thermal insulation member 10 are made of thermal insulation mica blocks. In other embodiments, the first thermal insulation member 5 and the second thermal insulation member 10 may also be made of other materials with thermal insulation properties other than thermal insulation mica.

[0057] In the above embodiment, the extension piece 213 maintains a thermal insulation connection with the first rotating arm 3221 and the heat conducting piece 212 through the first heat insulating piece 5. In other embodiments, the extension piece 213 may be thermally insulated only with the first rotating arm 3221, or may be thermally insulated only with the heat conducting piece 212, which can also provide a certain thermal insulation effect.

[0058] It can be seen from the above technical solutions that the utility model has the following beneficial effects:

[0059] The hot melt component in the utility model can heat a piece of adhesive film cut and laid on the glass plate, and use the cooling component to cool and solidify the area to be welded, so that the adhesive film in the area to be welded is fixed to the glass plate, avoiding slippage between the adhesive film and the glass plate during subsequent transportation. In addition, the linear moving component in the utility model can adjust the distance between the hot melt component and the cooling component and the bearing mechanism, so that the adhesive film welding device can weld adhesive films of different sizes, thereby improving the compatibility of the adhesive film welding device.

[0060] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0061] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A film welding device, characterized in that: include: A bearing mechanism, used for bearing the components to be welded, wherein the components to be welded include a glass plate and an adhesive film provided on the upper surface of the glass plate; The welding mechanism comprises a hot melt component, wherein the hot melt component comprises at least one heating element and at least one heat-conducting element thermally connected to the heating element, wherein the heat-conducting element is located above the component to be welded and thermally connected to the component to be welded so as to conduct the heat generated by the heating element to the area to be welded of the component to be welded.

2. The adhesive film welding device according to claim 1, characterized in that: The adhesive film welding device comprises two welding mechanisms, and the two welding mechanisms are respectively arranged on both sides of the supporting mechanism.

3. The adhesive film welding device according to claim 2, characterized in that: The bearing mechanism includes a plurality of conveyor belts for driving the components to be welded. The two welding mechanisms are staggered along a first direction and a second direction. The first direction is the transmission direction of the conveyor belts, and the second direction is perpendicular to the first direction.

4. The adhesive film welding device according to claim 1, characterized in that: The welding mechanism further includes a cooling component, which includes at least one cold air pipe, and an air outlet of the cold air pipe faces the to-be-welded area of ​​the to-be-welded component.

5. The adhesive film welding device according to claim 1, characterized in that: The adhesive film welding device further comprises an adjusting mechanism and a bracket, wherein the adjusting mechanism is connected to the bearing mechanism via the bracket, and the adjusting mechanism comprises a linear moving component, and the linear moving component is used to drive the welding mechanism to move along a first direction.

6. The adhesive film welding device according to claim 5, characterized in that: The adjusting mechanism also includes a rotating assembly, which is mounted on the linear moving assembly and moves synchronously with the linear moving assembly. The rotating assembly includes a rotating arm connected to the welding mechanism, and the rotating assembly is used to drive the welding mechanism to rotate in a plane perpendicular to the component to be welded or parallel to the component to be welded.

7. The adhesive film welding device according to claim 6, characterized in that: The hot melt assembly also includes an extension piece, one end of which is connected to the rotating arm, and the other end of which extends away from the rotating arm and is connected to the heat conductive piece. The extension direction of the extension piece is perpendicular to the extension direction of the rotating arm.

8. The adhesive film welding device according to claim 7, characterized in that: The rotating arm includes a first rotating arm and a second rotating arm which rotate synchronously and are arranged at an interval. The welding mechanism also includes a cooling component. The rotating end of the first rotating arm is connected to the hot melt component, and the rotating end of the second rotating arm is connected to the cooling component. A first heat insulating member is provided between the first rotating arm and the second rotating arm.

9. The adhesive film welding device according to claim 8, characterized in that: The first end of the extension member is connected to the first thermal insulation member; and / or, A second heat insulating member is disposed at the second end of the extending member, and the heat conducting member is connected to the heat conducting member via the second heat insulating member.

10. The adhesive film welding device according to claim 1, characterized in that: The hot melt assembly further comprises a temperature measuring device connected to the heat conducting member; and / or, The adhesive film welding device also includes a heat insulation shield that wraps the welding mechanism.

Images