Gluing head and gluing device

Abstract

The utility model discloses a gluing head and a gluing device, the gluing head is used for gluing a frame of a photovoltaic module, the side wall of the gluing head comprises a first side wall and a second side wall which are oppositely arranged along a first horizontal direction, the first side wall is provided with a first glue outlet, the second side wall is provided with a second glue outlet, and the first glue outlet and the second glue outlet are communicated with each other. And the glue outlet area of the first glue outlet is smaller than that of the second glue outlet. According to the gluing head provided by the embodiment of the utility model, the glue outlet area of the first glue outlet is smaller than that of the second glue outlet, so that the glue outlet amounts of corresponding areas of the front surface and the back surface of the photovoltaic module in the gluing process of the gluing head are different, the glue type after the frame and the photovoltaic module are assembled is effectively controlled, and the problems of front surface glue overflow and back surface glue shortage are solved; the reject ratio of products is greatly reduced, and the production takt is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of caulking, and more specifically, to a caulking head and a caulking device. Background Art

[0002] During the production process, after caulking into the slot of the frame through the caulking head of the caulking device, the photovoltaic module is inserted into the slot of the frame. The different side surfaces of the photovoltaic module are divided into the front, side and back. In the related art, after caulking, the wet glue in the slot covers the bottom, and is surrounded on three sides by the extrusion of the photovoltaic module, which is likely to cause the problem of glue overflow on the front side, resulting in an increase in the product rejection rate and an easy impact on the production rhythm. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a caulking head, which is beneficial to solving the problem of glue overflow on the front side of the photovoltaic module, reducing the product rejection rate and improving the production rhythm.

[0004] The utility model also provides a caulking device with the above-mentioned caulking head.

[0005] The caulking head according to the embodiment of the utility model is used for caulking the frame of the photovoltaic module. The side wall of the caulking head includes a first side wall and a second side wall which are oppositely arranged along a first horizontal direction. The first side wall is provided with a first glue outlet, and the second side wall is provided with a second glue outlet. Among them, the glue outlet area of the first glue outlet is smaller than the glue outlet area of the second glue outlet.

[0006] The caulking head according to the embodiment of the utility model makes the glue output amounts to the corresponding areas on the front and back sides of the photovoltaic module different during the caulking process by the glue outlet area of the first glue outlet being smaller than that of the second glue outlet, effectively controls the glue type after the assembly of the frame and the photovoltaic module, improves the problems of glue overflow on the front side and lack of glue on the back side, greatly reduces the product rejection rate, and improves the production rhythm.

[0007] In addition, the caulking head according to the above embodiment of the utility model may also have the following additional technical features:

[0008] According to some embodiments of the utility model, the widths of the first glue outlet and the second glue outlet along a second horizontal direction are equal, and the second horizontal direction is perpendicular to the first horizontal direction.

[0009] According to some embodiments of the utility model, in the up and down direction, the size difference between the first glue outlet and the second glue outlet is 3 mm - 5 mm.

[0010] According to some embodiments of the present utility model, the size of the first glue outlet in the up-down direction is less than or equal to 9 mm; and / or, the size of the second glue outlet in the up-down direction is less than or equal to 12 mm.

[0011] According to some embodiments of the present utility model, the inner wall surface at the upper end of the first glue outlet and / or the second glue outlet is an upwardly convex upper arc surface.

[0012] According to some embodiments of the present utility model, the first side wall and the second side wall are flat plates parallel to each other, and the distance between the opposite side surfaces of the first side wall and the second side wall is less than the size of the first side wall and the second side wall in the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0013] According to some embodiments of the present utility model, the lower end of the caulking head has a third glue outlet, and the third glue outlet communicates with the first glue outlet and the second glue outlet.

[0014] According to some embodiments of the present utility model, in the second horizontal direction perpendicular to the first horizontal direction, the size of the third glue outlet is greater than or equal to the size of the first glue outlet; and / or, the size of the third glue outlet is greater than or equal to the size of the second glue outlet.

[0015] According to some embodiments of the present utility model, the lower end surface of the caulking head is a lower arc surface, and in the second horizontal direction perpendicular to the first horizontal direction, the middle part of the lower arc surface protrudes downward relative to both ends.

[0016] The caulking device according to the embodiment of the present utility model includes a caulking head according to the embodiment of the present utility model.

[0017] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a view of one side of the caulking head along the first direction according to the embodiment of the present utility model;

[0020] Figure 2 is a view of the other side of the caulking head along the first direction according to the embodiment of the present utility model;

[0021] Figure 3 is a view of one side of the caulking head along the second direction according to the embodiment of the present utility model;

[0022] Figure 4 is a top view of the caulking head according to an embodiment of the present utility model;

[0023] Figure 5 is a cross-sectional view before the glue layer cures after caulking into the frame using the caulking head according to an embodiment of the present utility model;

[0024] Figure 6 is a cross-sectional view after the glue layer cures after caulking into the frame using the caulking head according to an embodiment of the present utility model;

[0025] Figure 7 is the depth of the wet glue layer at different collection points before the glue layer cures;

[0026] Figure 8 is the depth of the dry glue layer at different collection points after the glue layer cures.

[0027] Reference numerals:

[0028] frame 200; slot 210; photovoltaic module 300; front side 310; side 320; back side 330; glue layer 400;

[0029] caulking head 100;

[0030] first section 10; upper arc surface 101; first side wall 11; first glue outlet 111; second side wall 12; second glue outlet 121; lower end surface 13; third glue outlet 131;

[0031] second section 20;

[0032] first horizontal direction F1; second horizontal direction F2. Detailed implementation manners

[0033] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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, and do not indicate or imply 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 to the present invention.

[0035] In the description of the present invention, "first feature" and "second feature" may include one or more such features, "plurality" means two or more, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them, the first feature "above", "above" and "above" the second feature include the first feature being directly above and diagonally above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0036] During the production of photovoltaic cells, glue is applied to the slots of the frame through the glue-applying head of the glue-applying device, and then the photovoltaic module is inserted into the slots of the frame. The different side surfaces of the photovoltaic module are divided into the front, side and back. In the related art, the wet glue in the slot after gluing covers the bottom of the slot, and the photovoltaic module squeezes the wet glue to form a three-sided surround of the photovoltaic module. Because the wet glue is spread flat before extrusion, it is affected by the fluctuation of the gap between the photovoltaic module and the frame during the extrusion process, resulting in unstable glue overflow, prone to glue overflow on the front, and increased product defect rate. It is necessary to introduce a glue-erasing machine to increase the glue removal process, which is likely to affect the production rhythm, and the glue-erasing machine will increase the cost of subsequent maintenance and consumables; and the glue overflow on the front will contaminate the production line, and then contaminate subsequent components, further leading to an increase in the defect rate.

[0037] Based on this, the present application proposes a gluing head 100, which is used to apply glue to the inside of the frame 200. The wet glue layer formed is not easy to form glue overflow on the front side 310 after being squeezed by the photovoltaic component 300, and the sealing between the photovoltaic component 300 and the frame 200 is taken into account, which is conducive to reducing the defective rate and improving the production rhythm.

[0038] The following describes a glue head 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0039] Reference Figures 1-4As shown in the figure, the caulking head 100 according to an embodiment of the present invention is used for caulking (or injecting glue) the frame 200 of the photovoltaic module 300. The side wall of the caulking head 100 includes a first side wall 11 and a second side wall 12, and the first side wall 11 and the second side wall 12 are oppositely arranged along a first horizontal direction F1. The first side wall 11 is provided with a first glue outlet 111, and the second side wall 12 is provided with a second glue outlet 121. Among them, the glue outlet area of the first glue outlet 111 is smaller than the glue outlet area of the second glue outlet 121.

[0040] During the production process, the caulking head 100 can at least partially extend into the slot 210 of the frame 200, and inject glue into the slot 210 through the first glue outlet 111 and the second glue outlet 121. The caulking head 100 can move along a second horizontal direction F2 perpendicular to the first horizontal direction F1 in the slot 210, so as to realize continuous caulking in the length direction of the slot 210.

[0041] Among them, the slot 210 has a slot wall opposite to the front surface 310 of the photovoltaic module 300 (hereinafter referred to as the first slot wall), a slot wall opposite to the back surface 330 of the photovoltaic module 300 (hereinafter referred to as the second slot wall), and a slot bottom wall. The slot bottom wall connects the first slot wall and the second slot wall, and the slot bottom wall is opposite to the side surface 320 of the photovoltaic module 300. The first side wall 11 faces the first side wall of the slot 210, the second side wall 12 faces the second side wall of the slot 210, and the lower end surface 13 of the caulking head 100 faces the slot bottom wall of the slot 210. Thus, the first glue outlet 111 injects glue towards the first slot wall, and the second glue outlet 121 injects glue towards the second slot wall. Since the glue outlet area of the first glue outlet 111 is smaller than the glue outlet area of the second glue outlet 121, the glue output of the first glue outlet 111 is less than the glue output of the second glue outlet 121, and the depth of the wet glue layer 400 near the first slot wall is less than the depth of the wet glue layer 400 near the second slot wall. Also, since the wet glue has a certain fluidity, the wet glue layer 400 in the slot 210 flows downward under the action of gravity, but due to the influence of the glue output at different positions, the final wet glue layer 400 in the slot 210 is generally as Figure 5 shown in a cross-section of an L shape, or generally in a U shape with different depths on both sides of the U shape.

[0042] As Figure 6As described above, after the photovoltaic module 300 is inserted into the slot 210, under the extrusion of the photovoltaic module 300, the adhesive layer 400 bonds the front surface 310, the side surface 320, and the back surface 330 of the photovoltaic module 300 to the wall surface of the slot 210. Moreover, the depth of the adhesive layer 400 opposite to the back surface 330 of the photovoltaic module 300 is greater than the depth of the adhesive layer 400 opposite to the front surface 310 of the photovoltaic module 300. In other words, a sealed adhesive layer 400 is formed in the area corresponding to the front surface 310 of the photovoltaic module 300 to improve the sealing effect, without causing adhesive overflow, without polluting the production line, reducing the product defect rate, and increasing the production tempo. Also, the depth of the adhesive layer 400 in the area corresponding to the back surface 330 of the photovoltaic module 300 is relatively large, which effectively improves the sealing effect, is not prone to the problem of lack of adhesive on the back surface 330, and is conducive to further reducing the product defect rate.

[0043] In addition, as Figure 7 shown is the depth of the adhesive layer 400 at different collection points in the wet adhesive state, Figure 8 and Figure 7 shown is the depth of the adhesive layer 400 at different collection points in the dry adhesive state. Combining Figure 8 and

[0044] it can be seen that before and after the curing of the adhesive layer 400, the depth of the adhesive layer 400 does not change significantly, and the depth of the wet adhesive layer 400 is not less than 3 mm, and the depth of the dry adhesive layer 400 is not greater than 7 mm, indicating that the adhesive layer 400 can achieve reliable sealing between the photovoltaic module 300 and the frame 200.

[0045] According to the glue applicator head 100 of the embodiment of the present utility model, the glue outlet area of the first glue outlet 111 is smaller than the glue outlet area of the second glue outlet 121, so that the glue output amounts to the areas corresponding to the front surface 310 and the back surface 330 of the photovoltaic module 300 are different during the glue application process of the glue applicator head 100, effectively controlling the glue pattern after the assembly of the frame 200 and the photovoltaic module 300, improving the problems of adhesive overflow on the front surface 310 and lack of adhesive on the back surface 330, greatly reducing the product defect rate, and increasing the production tempo.

[0046] For example, in some embodiments, as Figure 1 and Figure 2As shown, the widths of the first glue outlet 111 and the second glue outlet 121 along the second horizontal direction F2 are equal, and the second horizontal direction F2 is perpendicular to the first horizontal direction F1.

[0047] That is, the widths of the first glue outlet 111 and the second glue outlet 121 in the glue application moving direction of the glue application head 100 are equal, making the glue application of the first glue outlet 111 and the second glue outlet 121 more matching with the movement of the glue application head 100. The difference in the glue application amount is achieved only by adjusting the heights of the first glue outlet 111 and the second glue outlet 121 in the up and down direction, and it is easier to form a height difference in the up and down direction for the glue application, so as to facilitate the formation of a non-flat glue type for the wet glue layer 400, for example Figure 5 as shown.

[0048] Furthermore, in the up and down direction, the size difference between the first glue outlet 111 and the second glue outlet 121 is 3 mm to 5 mm. Here, the difference refers to the difference obtained by subtracting the size of the first glue outlet 111 from the size of the second glue outlet 121. If the second glue outlet 121 is too much higher than the first glue outlet 111, it will easily cause lack of glue on the front surface 310. If the second glue outlet 121 is too little higher than the first glue outlet 111, there will be a risk of glue overflow on the front surface 310. Within the above value range, it takes into account that the front surface 310 is not easy to lack glue and not easy to overflow glue, and the bonding area on the back surface 330 is appropriate, and the effect of reducing the product defect rate is better.

[0049] In some specific embodiments, the size difference between the first glue outlet 111 and the second glue outlet 121 can be 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.

[0050] In some embodiments, the size of the first glue outlet 111 along the up and down direction is less than or equal to 9 mm. In some embodiments, the size of the second glue outlet 121 along the up and down direction is less than or equal to 12 mm.

[0051] If the height of the first glue outlet 111 or the second glue outlet 121 is too large, it may affect the glue type of the wet glue layer 400 and is not matched with the depth of the slot 210 of the frame 200. Within the above value range, the height sizes of the first glue outlet 111 and the second glue outlet 121 are more matched with the depth of the slot 210, making the glue type of the finally formed wet glue layer 400 and the glue type of the dry glue layer 400 after curing more meet the requirements, and effectively solving the problems of glue overflow on the front surface 310 and lack of glue on the back surface 330.

[0052] According to some embodiments of the present invention, such as Figure 1 and Figure 2As shown, the inner wall surface at the upper end of at least one of the first glue outlet 111 and the second glue outlet 121 is an upwardly convex upper arc surface 101. The upper arc surface 101 can reduce the stress concentration at the upper end of the corresponding glue outlet (the first glue outlet 111 or the second glue outlet 121), facilitate the processing and forming of the glue applicator head 100, and the inner wall surface at the upper end of the glue outlet is not prone to cracking and affecting glue discharge, which is beneficial to improving the service life of the glue applicator head 100.

[0053] According to some embodiments of the present invention, as Figure 2 and Figure 3 shown, the first side wall 11 and the second side wall 12 are parallel flat plates, the distance between the opposite side surfaces 320 of the first side wall 11 and the second side wall 12 is L1, the dimension of the first side wall 11 and the second side wall 12 along the second horizontal direction F2 is L2, L1 is less than L2, and the second horizontal direction F2 is perpendicular to the first horizontal direction F1.

[0054] The part of the glue applicator head 100 having the first side wall 11 and the second side wall 12 is formed into a flat tube structure. For example, the glue applicator head 100 includes a connected first section 10 and a second section 20. The side walls of the first section 10 include the first side wall 11 and the second side wall 12. The side wall of the second section 20 is a combination of one or more of a cylindrical shape, a frustum shape, etc. The second section 20 has a glue inlet and is used to realize the installation of the glue applicator head 100 on the glue application device. The first section 10 is integrally formed into a flat tube structure. During the glue application process, the first section 10 is inserted into the slot 210 and moves within the slot 210. The flat tube structure enables the first section 10 to form a more suitable and uniform gap between the first side wall 11, the second side wall 12 and the bottom wall of the slot 210, so as to improve the glue application effect and glue application consistency at different positions of the slot 210.

[0055] According to some embodiments of the present invention, as Figure 3 and Figure 4 shown, the lower end of the glue applicator head 100 has a third glue outlet 131, and the third glue outlet 131 communicates with the first glue outlet 111 and the second glue outlet 121.

[0056] During the glue application process, glue can be discharged through the third glue outlet 131 towards the bottom wall of the slot 210, and then bonded to the side surface 320 of the photovoltaic module 300, so that the glue layer 400 is more conducive to realizing three-sided bonding with the photovoltaic module 300, which is beneficial to reducing the bubbles in the glue layer 400 and improving the sealing reliability. Moreover, the third glue outlet 131 communicating with the first glue outlet 111 and the second glue outlet 121 can integrate the three glue outlets into one body, and then the wet glue flowing out in three directions is more easily connected into one body, improving the continuity of the glue layer 400.

[0057] Here, the shape and size of the third glue outlet 131 can be flexibly set according to the actual situation. For example, in some embodiments, in the second horizontal direction F2 perpendicular to the first horizontal direction F1, the size of the third glue outlet 131 is greater than or equal to the size of the first glue outlet 111; in some embodiments, in the second horizontal direction F2 perpendicular to the first horizontal direction F1, the size of the third glue outlet 131 is greater than or equal to the size of the second glue outlet 121.

[0058] If the size of the third glue outlet 131 is too small, it is easy to cause the glue output towards the bottom wall of the slot 210 to be too low, and there is a risk of bubbles or broken glue in the sealing of the side surface 320 of the photovoltaic module 300. Within the above proportional range, the glue output of the third glue outlet 131 is more appropriate and more matched with the glue output of the first glue outlet 111 and the second glue outlet 121, so as to improve the three-sided sealing effect of the photovoltaic module 300.

[0059] In some embodiments, as Figures 1-3 shown, the lower end surface 13 of the glue applicator head 100 is a lower arc surface, and in the second horizontal direction F2 perpendicular to the first horizontal direction F1, the middle part of the lower arc surface protrudes downward relative to both ends.

[0060] The lower arc surface of the above structure makes the distance between both ends of the lower arc surface and the bottom wall of the slot 210 greater than the distance between the middle part and the bottom wall of the slot 210, which can reduce the moving resistance of the glue applicator head 100 during the movement along the second horizontal direction F2, and reduce the influence of the movement of the glue applicator head 100 on the wet glue layer 400 in the slot 210. In addition, the lower arc surface structure of the lower end surface 13 of the glue applicator also has the advantages of being easy to process, reducing stress concentration, not being easily worn, and not being easily damaged.

[0061] The glue applicator according to the embodiment of the present invention includes the glue applicator head 100 according to the embodiment of the present invention. Since the glue applicator head 100 according to the embodiment of the present invention has the above beneficial technical effects, the glue applicator according to the embodiment of the present invention, by making the glue output area of the first glue outlet 111 smaller than the glue output area of the second glue outlet 121, makes the glue output towards the corresponding areas on the front surface 310 and the back surface 330 of the photovoltaic module 300 different during the glue application process of the glue applicator head 100, effectively controls the glue type after the frame 200 and the photovoltaic module 300 are assembled, improves the problems of glue overflow on the front surface 310 and lack of glue on the back surface 330, greatly reduces the product defect rate, and improves the production beat.

[0062] Other components and operations of the glue applicator according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0063] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0064] In the description of this specification, the descriptions referring to terms such as "embodiment", "specific embodiment", "example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0065] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A caulking head, characterized in that, For gluing the frame of a photovoltaic module, the side wall of the glue applicator head includes a first side wall and a second side wall that are oppositely arranged along a first horizontal direction. The first side wall is provided with a first glue outlet, and the second side wall is provided with a second glue outlet. Among them, The glue outlet area of the first glue outlet is smaller than that of the second glue outlet.

2. The caulking head according to claim 1, wherein The widths of the first glue outlet and the second glue outlet along a second horizontal direction are equal, and the second horizontal direction is perpendicular to the first horizontal direction.

3. The caulking head according to claim 2, wherein In the up-down direction, the size difference between the first glue outlet and the second glue outlet is 3 mm to 5 mm.

4. The caulking head according to claim 2, characterized in that, The size of the first glue outlet along the up-down direction is less than or equal to 9 mm; and / or, the size of the second glue outlet along the up-down direction is less than or equal to 12 mm.

5. The caulking head according to claim 1, characterized in that, The inner wall surface at the upper end of the first glue outlet and / or the second glue outlet is an upwardly convex upper arc surface.

6. The caulking head according to claim 1, wherein The first side wall and the second side wall are parallel flat plates. The distance between the opposite side surfaces of the first side wall and the second side wall is smaller than the size of the first side wall and the second side wall along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

7. The caulking head according to any one of claims 1-6, characterized in that, The lower end of the glue applicator head has a third glue outlet, and the third glue outlet communicates with the first glue outlet and the second glue outlet.

8. The caulking head according to claim 7, characterized in that, In a second horizontal direction perpendicular to the first horizontal direction, the size of the third glue outlet is greater than or equal to the size of the first glue outlet; and / or, the size of the third glue outlet is greater than or equal to the size of the second glue outlet.

9. The caulking head according to claim 7, wherein The lower end surface of the glue applicator head is a lower arc surface. In a second horizontal direction perpendicular to the first horizontal direction, the middle part of the lower arc surface protrudes downward relative to both ends.

10. A caulking device, characterized in that, Comprising the glue applicator head according to any one of claims 1-9.

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