Adhesive film splicing mechanism
By designing a film splicing mechanism for photovoltaic modules, using hot pressing and cylinder thinning technology, the waste and production costs caused by the thickness of the splicing part are solved, and efficient utilization and cost saving of the film are achieved.
Patent Information
- Application Number
- CN202420723935.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-04-09
AI Technical Summary
During the packaging process of photovoltaic modules, the thickness difference in the splicing part leads to blackening of EL or bubbles, resulting in the whole film being discarded, wasting materials and increasing production costs.
A film splicing mechanism is designed, and the thermal pressing assembly and cylinder are used to completely bond the splicing part through the thermal pressing of the first heating plate to reduce thickness difference, and to ensure that the film splicing part is firmly bonded through the cylinder.
It effectively avoids the phenomenon of lifting the end of the film, bubbles or EL blackening, and makes full use of the film material to reduce waste and reduce production costs.
Smart Images
Figure CN222858775U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of solar cells, and in particular relates to a film splicing mechanism. Background Art
[0002] Photovoltaic power generation converts solar energy into electrical energy through photovoltaic modules. One of the key materials of photovoltaic modules is adhesive film, which can be used as the internal packaging material of photovoltaic modules such as crystalline silicon cells, thin-film cells, double-glass modules, and bifacial cells, playing a role in packaging and protection.
[0003] At present, the mainstream product in the photovoltaic module industry is the TOPCon module. Due to the particularity of its battery cells, only POE film or EPE film can be used for the front film. During the packaging process, the POE film or EPE film needs to be cut into the size of the glass first, and then laid on the glass. Since the length of the POE film or EPE film is limited, in order to increase the length of the POE film or EPE film, multiple rolls of POE film or EPE film will be spliced together so that the film of sufficient length can be cut out uninterruptedly by the film cutting machine. When using a film with a splicing part for packaging, due to the large thickness difference between the splicing part and the two sides, the single glass module will appear EL blackening after lamination or a large number of bubbles will be produced after lamination of the double glass module. Therefore, in the actual production process, the entire film with the splicing part will be directly discarded to avoid the above problems. This method will waste the film, increase production costs, and reduce production efficiency.
[0004] 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
[0005] The utility model aims to provide a film splicing mechanism, which can reduce the thickness of the splicing part, so as to make full use of the film, reduce the waste of film materials, and save the film cost.
[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:
[0007] A film splicing mechanism, the film splicing mechanism comprising:
[0008] A processing table, the processing table comprising a processing table surface for placing the adhesive film to be spliced;
[0009] A bracket, mounted on the processing table in a vertical direction;
[0010] A heat pressing assembly is movably mounted on the bracket, and the heat pressing assembly comprises a first heating plate located above the processing table and a first heating element thermally connected to the first heating plate;
[0011] The first driving unit is fixedly mounted on the bracket along the vertical direction and is installed in linkage with the first heating plate. The first driving unit is used for driving the first heating plate to move toward the processing table.
[0012] In one or more embodiments of the present invention, the bracket includes two support rods arranged opposite to each other and a cross bar arranged between the two support rods, and the hot pressing assembly also includes a connecting rod slidably installed on the two support rods, and the first heating plate is fixedly installed on the connecting rod.
[0013] In one or more embodiments of the present invention, the two support rods are respectively provided with a first slide rail and a second slide rail, and the two ends of the connecting rod are respectively provided with a first slide groove and a second slide groove, the first slide groove cooperates with the first slide rail, and the second slide groove cooperates with the second slide rail.
[0014] In one or more embodiments of the utility model, the processing table is provided with a third slide rail and a fourth slide rail which are arranged opposite to each other, and the third slide rail and the fourth slide rail are arranged along the width direction of the processing table surface, and the ends of the two support rods are respectively provided with a third slide groove and a fourth slide groove, and the third slide groove cooperates with the third slide rail, and the fourth slide groove cooperates with the fourth slide rail.
[0015] In one or more embodiments of the present invention, the first heating plate is provided with a first air inlet, a first air outlet, and a first gas flow channel connecting the first air inlet and the first air outlet, and the first air outlet is arranged toward the processing table; and / or,
[0016] The lower surface of the first heating plate is covered with a first anti-sticking layer.
[0017] In one or more embodiments of the present invention, the adhesive film splicing mechanism further includes a plurality of cylinders fixedly mounted on the bracket, and the cylinders are arranged at intervals along the length direction of the processing table.
[0018] In one or more embodiments of the present invention, the processing table is provided with a through groove arranged along the length direction of the processing table, and the hot pressing assembly also includes a second heating plate and a second heating element thermally connected to the second heating plate, and on the upper surface of the processing table, the orthographic projections of the first heating plate and the second heating plate at least partially overlap and are both located in the through groove.
[0019] In one or more embodiments of the present invention, the second heating plate passes through the through groove, and the upper surface of the second heating plate is arranged flush with the upper surface of the processing table.
[0020] In one or more embodiments of the present invention, the adhesive film splicing mechanism further includes a second driving unit located below the second heating plate, and the second driving unit is installed in linkage with the second heating plate.
[0021] In one or more embodiments of the present invention, the second heating plate is provided with a second air inlet, a second air outlet, and a second gas flow channel connecting the second air inlet and the second air outlet, and the second air outlet is arranged toward the first heating plate; and / or,
[0022] The upper surface of the second heating plate is covered with a second anti-sticking layer.
[0023] Compared with the prior art, the utility model has the following beneficial effects:
[0024] The utility model provides a film splicing mechanism, which can completely bond the splicing parts together through the heat pressing of a first heating plate, the splicing parts are firmly bonded, and the problem of warping of the film ends can be avoided; and the thickness of the splicing parts can be reduced, so that when the film with the splicing parts is used for packaging, bubbles or EL blackening can be avoided, thereby fully utilizing the film, reducing the waste of film materials, and saving film costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] 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 description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 It is a three-dimensional structural schematic diagram of a film splicing mechanism in one embodiment of the utility model;
[0027] Figure 2 This is a schematic diagram of the structure where the film splicing part has not been subjected to heat pressing treatment;
[0028] Figure 3 It is a schematic diagram of the structure of the film splicing part after heat pressing treatment;
[0029] Figure 4 for Figure 1 A magnified view of the local structure at point A in the middle;
[0030] Figure 5 for Figure 1 A magnified view of the local structure at B in the middle;
[0031] Figure 6 This is a schematic diagram of the main structure of the first heating plate in one embodiment of the utility model;
[0032] Figure 7 It is a cross-sectional structural schematic diagram of a film splicing mechanism in one embodiment of the utility model;
[0033] Figure 8 for Figure 7 A magnified view of the local structure at C in the middle;
[0034] Fig. 9 It is a cross-sectional structural schematic diagram of the first heating plate, the second heating plate, and the processing table in one embodiment of the utility model;
[0035] Fig.10 It is a schematic diagram of the front structure of the second heating plate in one embodiment of the utility model. DETAILED DESCRIPTION
[0036] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.
[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0039] It should be noted that the “length direction” in this application text is the length direction of the attached Figure 1 The X-axis direction is the width direction of the Figure 1 The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0040] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings.
[0041] Reference Figure 1As shown, the film splicing mechanism in one embodiment of the utility model includes: a processing table 1, a bracket 2, a thermal pressing assembly 3, and a first driving unit 4.
[0042] Among them, the processing table 1 includes a processing table surface 11 for placing the adhesive film to be spliced; the bracket 2 is installed on the processing table 1 along the vertical direction; the hot pressing assembly 3 is movably installed on the bracket 2, and the hot pressing assembly 3 includes a first heating plate 31 located above the processing table surface 11 and a first heating element thermally connected to the first heating plate 31; the first driving unit 4 is fixedly installed on the bracket 2 along the vertical direction and is installed in conjunction with the first heating plate 31, and the first driving unit 4 is used to drive the first heating plate 31 to move toward the processing table surface 11.
[0043] Reference Figure 2 , Figure 3 As shown, when a roll of adhesive film 9 is used up, its tail is spliced with the head of the next roll of adhesive film 9, and the width of the splicing part 90 is slightly smaller than the width of the first heating plate 31, and the splicing part 90 is located directly below the first heating plate 31. When the adhesive film 9 is spliced using the adhesive film splicing mechanism, the first heating plate 31 can be driven by the first driving unit 4 to move toward the processing table 11, so as to perform heat pressing on the upper surface of the adhesive film 9 to be spliced placed below the first heating plate 31. According to this design, the splicing part 90 can be completely bonded together by the heat pressing of the first heating plate 31, and the splicing part 90 is firmly bonded, which can avoid the problem of the end of the adhesive film 9 warping; and the thickness of the splicing part 90 can be reduced, so that when the adhesive film 9 with the splicing part 90 is used for packaging, bubbles or EL blackening can be avoided, thereby making full use of the adhesive film 9, reducing the waste of the adhesive film 9 material, and saving the cost of the adhesive film 9.
[0044] The first drive unit 4 may be a linear drive unit having a linear drive function such as vertical servo, stepping or cylinder, magnetic drive, hydraulic drive, etc., which can be connected and accepted by those skilled in the art.
[0045] Specifically, refer to Figure 1 As shown, the bracket 2 in this embodiment includes two supporting rods 21 arranged opposite to each other and a cross bar 22 arranged between the two supporting rods 21. The two brackets 2 are respectively fixedly mounted on the processing table 11 in the vertical direction, and the cross bar 22 is arranged between the two supporting rods 21 along the length direction of the processing table 11. In order to install the first heating plate 31 on the bracket 2, the heat pressing assembly 3 in this embodiment also includes a connecting rod 32 slidably mounted on the two supporting rods 21, and the first heating plate 31 is fixedly mounted on the connecting rod 32. The output rod 41 of the first driving unit 4 directly abuts against the connecting rod 32, and the first heating plate 31 is driven to move toward or away from the processing table 11 by controlling the vertical movement of the connecting rod 32.
[0046] Reference Figure 4 , Figure 5 As shown, in order to enable the two ends of the connecting rod 32 to be slidably installed on the two support rods 21, the two support rods 21 in this embodiment are respectively provided with a first slide rail 211 and a second slide rail 212, and the two ends of the connecting rod 32 are respectively provided with a first slide groove 321 and a second slide groove 322, the first slide groove 321 cooperates with the first slide rail 211, and the second slide groove 322 cooperates with the second slide rail 212.
[0047] Reference Figure 4 , Figure 5 As shown, the processing table 1 in this embodiment is provided with a third slide rail 12 and a fourth slide rail 13 arranged opposite to each other, and the third slide rail 12 and the fourth slide rail 13 are arranged along the width direction of the processing table 11. The ends of the two support rods 21 are respectively provided with a third slide groove 213 and a fourth slide groove 214, and the third slide groove 213 cooperates with the third slide rail 12, and the fourth slide groove 214 cooperates with the fourth slide rail 13. According to this design, the bracket 2 is slidably installed on the processing table 11. The bracket 2 can slide along the width direction of the processing table 11 to make room for the operation of removing the spliced film, thereby improving the convenience of manually removing the film.
[0048] After hot pressing, the temperature of the film joint is high. In order to cool it down quickly, refer to Figure 6 As shown, the first heating plate 31 in this embodiment is provided with a first air inlet 311, a first air outlet 312, and a first gas flow channel 313 connecting the first air inlet 311 and the first air outlet 312, and the first air outlet 312 is arranged toward the processing table 11. According to this design, after the first heating plate 31 is lifted, the first air inlet 311 can be connected to the gas transmission equipment, and cold air can be blown toward the adhesive film from the first air outlet 312, so that the splicing part can be quickly cooled and solidified.
[0049] Preferably, refer to Figure 6 As shown, the lower surface of the first heating plate 31 in this embodiment is covered with a first anti-adhesion layer 314, which can prevent the adhesive film from melting and adhering to the first heating plate 31 after thermal pressing. The first anti-adhesion layer 314 can be Teflon high temperature cloth.
[0050] In order to better heat-press the upper surface of the splicing part of the adhesive film through the first heating plate 31 to reduce the thickness of the splicing part, refer to Figure 1 As shown, the film splicing mechanism in this embodiment also includes a plurality of cylinders 5 fixedly mounted on the bracket 2, and the cylinders 5 are arranged at intervals along the length direction of the processing table 11. The cylinders 5 can directly act on the first heating plate 31 or on the connecting rod 32, so as to apply downward pressure to the first heating plate 31, thereby thinning the film splicing part.
[0051] Preferably, refer to Figure 1 Combined with Figure 7 to Figure 9As shown, the processing table 11 in this embodiment is provided with a through groove 111 arranged along the length direction of the processing table 11, and the heat pressing assembly 3 also includes a second heating plate 33 and a second heating element thermally connected to the second heating plate 33. The processing table 11 is arranged between the first heating plate 31 and the second heating plate 33. On the upper surface of the processing table 11, the orthographic projections of the first heating plate 31 and the second heating plate 33 at least partially overlap and are both located in the through groove 111. According to this design, the upper and lower surfaces of the splicing part of the adhesive film can be heat pressed by the first heating plate 31 and the second heating plate 33, respectively, which can not only better bond the splicing part of the adhesive film, but also reduce the influence of heat pressing on the performance of the adhesive film.
[0052] In order to make the film flat after hot pressing, refer to Figure 8 , Fig. 9 As shown, the second heating plate 33 in this embodiment passes through the through slot 111 , and the upper surface of the second heating plate 33 is flush with the upper surface of the processing table 11 .
[0053] Optionally, in order to adjust the vertical position of the second heating plate 33, refer to Figure 7 As shown, the adhesive film splicing mechanism in this embodiment further includes a second driving unit 6 located below the second heating plate 33 , and the second driving unit 6 is installed in linkage with the second heating plate 33 .
[0054] The second drive unit 6 may be a linear drive unit with a linear drive function such as vertical servo, stepper or cylinder, magnetic drive, hydraulic drive, etc., which can be connected and accepted by those skilled in the art.
[0055] After hot pressing, the temperature of the film joint is high. In order to cool it down quickly, refer to Fig.10 As shown, the second heating plate 33 in this embodiment is provided with a second air inlet 331, a second air outlet 332, and a second gas flow channel 333 connecting the second air inlet 331 and the second air outlet 332, and the second air outlet 332 is arranged toward the first heating plate 31. According to this design, after the second heating plate 33 is moved downward, the second air inlet 331 can be connected to the gas transmission equipment, and cold air can be blown toward the adhesive film from the second air outlet 332, so that the splicing part can be quickly cooled and solidified.
[0056] Preferably, refer to Fig.10 As shown, the upper surface of the second heating plate 33 in this embodiment is covered with a second anti-adhesion layer 334, which can prevent the adhesive film from melting and adhering to the second heating plate 33 after thermal pressing. The second anti-adhesion layer 334 can be Teflon high temperature cloth.
[0057] The working principle of the middle film splicing mechanism of the utility model is:
[0058] The upper surface of the second heating plate 33 is set flush with the upper surface of the processing table 11. After the heads and tails of the front and rear rolls of the film are stacked and aligned with the through groove 111, the first drive unit 4 is started to abut the first heating plate 31 against the splicing part of the film, and further downward pressure is applied through the cylinder 5 to control the temperature of the first heating plate 31 to 72°C and the temperature of the second heating plate 33 to 67°C, and maintain for 15 seconds to perform heat pressing on the splicing part of the film. After completion, the first heating plate 31 is lifted. Then the first air inlet 311 is connected to the air transmission equipment, and cold air is blown to the film from the first air outlet 312, so that the splicing part is quickly cooled and solidified. After the blowing is completed, the film cutting machine can be operated to pull and cut.
[0059] It can be seen from the above technical solutions that the utility model has the following beneficial effects:
[0060] The utility model provides a film splicing mechanism, which can completely bond the splicing parts together through the heat pressing of a first heating plate, the splicing parts are firmly bonded, and the problem of warping of the film ends can be avoided; and the thickness of the splicing parts can be reduced, so that when the film with the splicing parts is used for packaging, bubbles or EL blackening can be avoided, thereby fully utilizing the film, reducing the waste of film materials, and saving film costs.
[0061] 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.
[0062] 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 splicing mechanism, characterized in that: The adhesive film splicing mechanism comprises: A processing table, the processing table comprising a processing table surface for placing the adhesive film to be spliced; A bracket, mounted on the processing table in a vertical direction; A heat pressing assembly is movably mounted on the bracket, and the heat pressing assembly comprises a first heating plate located above the processing table and a first heating element thermally connected to the first heating plate; A first driving unit is fixedly mounted on the bracket in a vertical direction and is installed in linkage with the first heating plate, and the first driving unit is used to drive the first heating plate to move toward the processing table; The processing table is provided with a through groove arranged along the length direction of the processing table, and the hot pressing assembly also includes a second heating plate and a second heating element thermally connected to the second heating plate. On the upper surface of the processing table, the orthographic projections of the first heating plate and the second heating plate at least partially overlap and are both located in the through groove.
2. The adhesive film splicing mechanism according to claim 1, characterized in that: The bracket includes two supporting rods arranged opposite to each other and a cross bar arranged between the two supporting rods. The heat pressing assembly also includes a connecting rod slidably mounted on the two supporting rods, and the first heating plate is fixedly mounted on the connecting rod.
3. The adhesive film splicing mechanism according to claim 2, characterized in that: The two support rods are respectively provided with a first slide rail and a second slide rail, and the two ends of the connecting rod are respectively provided with a first slide groove and a second slide groove, the first slide groove cooperates with the first slide rail, and the second slide groove cooperates with the second slide rail.
4. The adhesive film splicing mechanism according to claim 2, characterized in that: The processing table is provided with a third slide rail and a fourth slide rail which are arranged opposite to each other. The third slide rail and the fourth slide rail are arranged along the width direction of the processing table surface. The ends of the two support rods are respectively provided with a third slide groove and a fourth slide groove. The third slide groove cooperates with the third slide rail, and the fourth slide groove cooperates with the fourth slide rail.
5. The adhesive film splicing mechanism according to claim 1, characterized in that: The first heating plate is provided with a first air inlet, a first air outlet, and a first gas flow channel connecting the first air inlet and the first air outlet, and the first air outlet is arranged toward the processing table; and / or, The lower surface of the first heating plate is covered with a first anti-sticking layer.
6. The adhesive film splicing mechanism according to claim 1, characterized in that: The adhesive film splicing mechanism also includes a plurality of cylinders fixedly mounted on the bracket, and the cylinders are arranged at intervals along the length direction of the processing table.
7. The adhesive film splicing mechanism according to claim 1, characterized in that: The second heating plate passes through the through slot, and the upper surface of the second heating plate is flush with the upper surface of the processing table.
8. The adhesive film splicing mechanism according to claim 1, characterized in that: The adhesive film splicing mechanism further includes a second driving unit located below the second heating plate, and the second driving unit is installed in linkage with the second heating plate.
9. The adhesive film splicing mechanism according to claim 1, characterized in that: The second heating plate is provided with a second air inlet, a second air outlet, and a second gas flow channel connecting the second air inlet and the second air outlet, and the second air outlet is arranged toward the first heating plate; and / or, The upper surface of the second heating plate is covered with a second anti-sticking layer.