Pressing tool with adjustable size

Abstract

The utility model relates to the technical field of photovoltaic cell string production, in particular to a size-adjustable hold-down clamp, which comprises a first pressing part, a second pressing part and a third pressing part which are sequentially arranged, two ends of the second pressing part are fixedly connected with pressing blocks, a plurality of position adjusting holes are arranged on the pressing blocks, and the position adjusting holes are arranged in the position adjusting holes. The two ends of the first pressing part can be fixedly matched with different positioning holes so that the distance between the first pressing part and the second pressing part can be adjusted, and the two ends of the third pressing part are in floating connection with the pressing block. The distance between the first pressing part and the second pressing part is adjustable within a certain range, so that the hold-down clamp has certain compatibility, is suitable for pressing battery pieces and welding strips of various sizes, can reduce the use number of complete sets of hold-down clamps in battery string production equipment, and saves the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cell string production, in particular to a size-adjustable press. Background Art

[0002] Cells come in a variety of sizes. When producing battery strings, a press is required to hold the cells and solder ribbons in place. Different-sized cell sizes correspond to different-sized presses. Therefore, when switching to producing different-sized cell strings, the battery string production equipment must change to a different-sized press. For example, if the size of a half-cut cell changes from 182mm*91mm to 182mm*96mm or 182mm*105mm, a wider press must be replaced. This complicated press replacement process requires preparing multiple sets of presses, adding to the costs. Utility Model Content

[0003] In order to solve the above technical problems, the present invention provides the following solutions:

[0004] A size-adjustable press tool includes a first pressing part, a second pressing part and a third pressing part arranged in sequence, the two ends of the second pressing part are fixedly connected to a pressing block, the pressing block is provided with a plurality of adjustment holes, the two ends of the first pressing part can be fixedly matched with different adjustment holes so that the distance between the first pressing part and the second pressing part is adjustable, and the two ends of the third pressing part are floatingly connected to the pressing block.

[0005] Furthermore, the first pressing part, the second pressing part and the third pressing part all include a hollow substrate and a hollow floating plate arranged above and below, both ends of each of the hollow substrates are connected to the pressure block, a first guide column is fixed on each of the hollow floating plates, each of the first guide columns slides with the corresponding hollow substrate, a first spring is provided between each of the hollow substrates and the corresponding hollow floating plate, and both ends of each first spring respectively abut against the corresponding hollow substrate and the hollow floating plate.

[0006] Furthermore, one side of the bottom of the pressure block has two protruding ends, and the two protruding ends are correspondingly arranged below the two ends of the hollow substrate of the third pressing part, and a second guide column is fixed on each of the protruding ends, and each second guide column slidably cooperates with the hollow substrate of the third pressing part, and a second spring is provided between the hollow substrate of the third pressing part and each of the protruding ends, and the two ends of each second spring respectively abut against the hollow substrate of the third pressing part and the corresponding protruding end; in the first state, the pressing surface of the hollow floating plate of the third pressing part is higher than the pressing surfaces of the other two hollow floating plates; in the second state, the pressing surfaces of the hollow floating plates of the first pressing part, the second pressing part and the third pressing part are flush.

[0007] Furthermore, the bottom surfaces of both ends of the hollow substrate of the third pressing portion are inlaid with first magnetic steels, and the bottom surface of each pressing block is inlaid with second magnetic steels.

[0008] Furthermore, the hollow floating plate includes a hollow bottom plate and a hollow flexible pad that are bonded together. The bottom array of the hollow flexible pad is provided with first protrusions, and each column of the first protrusions is used to press a welding strip.

[0009] Furthermore, a groove is provided at the bottom of the first protruding block, and a second protruding block is provided between any two adjacent rows of the first protruding blocks.

[0010] Furthermore, the first pressing portion and the third pressing portion are both provided with a plurality of circular holes passing through the upper and lower parts.

[0011] Furthermore, a magnetic plate is embedded on the top surface of each pressing block.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] The size-adjustable press provided by the utility model has three pressing parts, namely a first pressing part, a second pressing part and a third pressing part. A plurality of adjustment holes are provided on the pressing block. The second pressing part is fixedly matched with different adjustment holes, so that the distance between the first pressing part and the second pressing part can be adjusted within a certain range, so that the press has a certain compatibility and is suitable for pressing battery cells and welding strips of various sizes. It can reduce the number of complete sets of presses used in battery string production equipment and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the size-adjustable pressing tool of the utility model;

[0015] Figure 2 It is a top view of the size-adjustable pressing tool of the utility model;

[0016] Figure 3 This is a bottom view of the size-adjustable press of the utility model;

[0017] Figure 4 This utility model Figure 1 Magnified view of area A in the middle;

[0018] Figure 5 This is a schematic diagram of the assembly relationship between the hollow base plate and the protruding end in the third pressing portion of the present invention;

[0019] Figure 6 This is a schematic diagram of a first embodiment of a hollow floating plate in the present invention;

[0020] Figure 7It is a schematic diagram of a second embodiment of the hollow floating plate in the present invention.

[0021] Among them: 100, first pressing part; 110, hollow substrate; 111, first guide pillar; 112, first spring; 113, second guide pillar; 114, second spring; 120, hollow floating plate; 121, hollow bottom plate; 122, hollow flexible pad; 123, first protruding block; 124, second protruding block; 130, circular hole; 200, second pressing part; 300, third pressing part; 310, first magnet; 400, pressing block; 410, adjustment hole; 420, protruding end; 430, magnetic plate; 440, second magnet. DETAILED DESCRIPTION

[0022] The technical solution and technical effects of the present invention are further described in detail below in conjunction with the accompanying drawings of the present invention.

[0023] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must be positioned, constructed, or operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. It should also be noted that, in this document, relational terms such as "first" and "second" are used solely to distinguish a first feature from a second feature, and do not necessarily require or imply any actual relationship or order between these features.

[0025] like Figures 1-4 As shown, the utility model provides a size-adjustable press suitable for pressing main-grid-less solar cells and welding strips, which includes a first pressing part 100, a second pressing part 200 and a third pressing part 300 arranged in sequence, and the two ends of the second pressing part 200 are fixedly connected to a pressing block 400, and a plurality of adjustment holes 410 are provided on the pressing block 400. The two ends of the first pressing part 100 can be fixedly matched with different adjustment holes 410 to make the spacing between the first pressing part 100 and the second pressing part 200 adjustable, and the two ends of the third pressing part 300 are floatingly connected to the pressing block 400.

[0026] In the present invention, the first pressing portion 100 and the third pressing portion 300 press the solder strips on both side areas of the battery cell, and the second pressing portion 200 presses the solder strips in the middle area of ​​the battery cell. The third pressing portion 300 can float up and down relative to the second pressing portion 200, so that when laying the solder strips, the first pressing portion 100 and the second pressing portion 200 first press part of the solder strips, and the third pressing portion 300 is lifted up to avoid the clamps that control the ends of the solder strips. Several adjustment holes 410 are spaced apart in the length direction of the solder strips. The adjustment holes 410 can be threaded holes. Through holes are provided at both ends of the first pressing portion 100. After the through holes are aligned with different adjustment holes 410, they can be fixed by screws to adjust the distance between the first pressing portion 100 and the second pressing portion 200. The size-adjustable press provided by the present invention has the number of adjustment holes 410 set as needed, so that the first pressing portion 100 and the second pressing portion 200 can form multiple spacings. When producing battery strings, it can be used to press battery cells and welding strips of different sizes. It has a certain compatibility. When the battery string production equipment switches to produce battery strings of different specifications, the pressing requirements can be met by adjusting the spacing between the first pressing portion 100 and the second pressing portion 200 without replacing another set of presses.

[0027] It should be noted that for battery cells of different sizes, after adjusting the spacing between the first pressing portion 100 and the second pressing portion 200, it is necessary to ensure that the first pressing portion 100 and the third pressing portion 300 can press the soldering ribbons connected to the two side areas of the battery cell, ensuring a secure connection between the two side areas of the battery cell and the soldering ribbons. The adjustable spacing between the first pressing portion 100 and the second pressing portion 200 should not be too large, for example, within 15mm, to avoid the possibility of cold solder joints between the battery cell and the soldering ribbons.

[0028] In the present invention, the first pressing portion 100, the second pressing portion 200, and the third pressing portion 300 each comprise a hollowed-out base plate 110 and a hollowed-out floating plate 120 arranged vertically. Each hollowed-out base plate 110 is connected to a pressing block 400 at both ends. A first guide post 111 is fixed to each hollowed-out floating plate 120, and each first guide post 111 slidably engages with the corresponding hollowed-out base plate 110. A first spring 112 is positioned between each hollowed-out base plate 110 and the corresponding hollowed-out floating plate 120, with each first spring 112 abutting against the corresponding hollowed-out base plate 110 and hollowed-out floating plate 120, respectively. The presser's hollowed-out design allows infrared light, which heats the cell, to pass through the hollowed-out area and act on the cell surface. During the pressing process, the first spring 112 acts to elastically press the soldering ribbon against the soldering ribbon, reducing the instantaneous pressure on the cell.

[0029] like Figure 5As shown, in the present invention, one side of the bottom of the pressing block 400 has two protruding ends 420, and the two protruding ends 420 are correspondingly arranged below the two ends of the hollow substrate 110 of the third pressing part 300, and a second guide column 113 is fixed on each protruding end 420, and each second guide column 113 slides with the hollow substrate 110 of the third pressing part 300, and a second spring 114 is provided between the hollow substrate 110 of the third pressing part 300 and each protruding end 420, and the two ends of each second spring 114 respectively abut against the hollow substrate 110 of the third pressing part 300 and the corresponding protruding end 420; in the first state, the pressing surface of the hollow floating plate 120 of the third pressing part 300 is higher than the pressing surfaces of the other two hollow floating plates 120; in the second state, the pressing surfaces of the hollow floating plates 120 of the first pressing part 100, the second pressing part 200 and the third pressing part 300 are flush. In the first state, the elastic force provided by the second spring 114 causes the pressing surface of the hollow floating plate 120 of the third pressing part 300 to be in a high position to avoid the clamp that controls the end of the welding strip; in the first state, the second spring 114 is compressed again, and at this time the pressing surface of the hollow floating plate 120 of the third pressing part 300 presses the welding strip.

[0030] In the present invention, the bottom surfaces of the hollow substrate 110 at both ends of the third pressing portion 300 are inlaid with first magnetic steels 310, and the bottom surface of each pressing block 400 is inlaid with second magnetic steels 440. When the laid-out battery string to be heated is transferred to the heating zone, the first magnetic steels 310 and second magnetic steels 440 attract the string support platform in the heating zone. At this time, the pressing surface of the hollow floating plate 120 of the third pressing portion 300 is in the second state, and the pressing tool compresses the solder ribbons in the area corresponding to the entire battery cell.

[0031] The connection methods for busbar-less solar cells and solder ribbons are generally divided into three types: dispensing glue, post-weld dispensing glue, and laminating. Dispensing glue: Glue is dispensed on the surface of the solar cell to form multiple dispensing bodies. The solder ribbon is laid on the dispensing bodies and irradiated with UV light to fix the solder ribbon to the solar cell through the dispensing bodies. Post-weld dispensing glue: The solder ribbon is first initially fixed to the solar cell through infrared heating. Dispensing glue is then applied to some connection points between the solder ribbon and the solar cell and further cured using UV light. Laminating glue: The hot melt adhesive film is heated, and the hot melt adhesive film adheres to the solar cell and fixes the solder ribbon to the surface of the solar cell.

[0032] like Figure 6 As shown, in one embodiment of the present invention, a hollow floating plate 120 comprises a hollow bottom plate 121 and a hollow flexible pad 122, which are bonded together. The bottom of the hollow flexible pad 122 is provided with an array of first raised blocks 123, each row of which is used to press a solder ribbon. This press is suitable for both dispensing and post-weld dispensing.

[0033] like Figure 7As shown, in another embodiment of the present invention, a groove is provided at the bottom of the first raised block 123, and a second raised block 124 is provided between any two adjacent rows of first raised blocks 123. This press is suitable for laminating solutions. A hot melt adhesive film is laid on the soldering ribbon. The press acts on the hot melt adhesive film, positioning the soldering ribbon in the groove. The first raised block 123 presses the soldering ribbon and the hot melt adhesive film on both sides, while the second raised block 124 presses the hot melt adhesive film between two adjacent soldering ribbons, improving the adhesion between the hot melt adhesive film and the cell.

[0034] In the present invention, a magnetic plate 430 is embedded on the top surface of each pressing block 400. In battery string production equipment, a robotic arm is used to grasp and transport the pressing tool. The robotic arm is equipped with an electromagnet, which attracts the magnetic plate 430 to facilitate transport. In other embodiments, the robotic arm is equipped with a suction cup, which attracts and transports the pressing tool.

[0035] In some embodiments of the present invention, the first pressing portion 100 and the third pressing portion 300 are each provided with a plurality of circular holes 130 extending therethrough. A film gripping structure can be integrated into a manipulator that handles the press. The film gripping structure can utilize a suction cup that can pass through the circular holes and grasp the hot melt adhesive film beneath the press. This allows the manipulator to simultaneously handle the press and the hot melt adhesive film. This press is suitable for lamination solutions.

[0036] The above disclosure is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of the rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A size-adjustable press, characterized in that: The invention comprises a first pressing part (100), a second pressing part (200) and a third pressing part (300) which are arranged in sequence, wherein the two ends of the second pressing part (200) are fixedly connected with a pressing block (400), and the pressing block (400) is provided with a plurality of adjustment holes (410), and the two ends of the first pressing part (100) can be fixedly matched with different adjustment holes (410) so that the distance between the first pressing part (100) and the second pressing part (200) is adjustable, and the two ends of the third pressing part (300) are floatingly connected with the pressing block (400).

2. The size-adjustable press according to claim 1, characterized in that: The first pressing portion (100), the second pressing portion (200) and the third pressing portion (300) all include a hollow substrate (110) and a hollow floating plate (120) arranged above and below, both ends of each hollow substrate (110) are connected to the pressing block (400), and a first guide column (111) is fixed on each hollow floating plate (120), and each first guide column (111) is slidably matched with the corresponding hollow substrate (110), and a first spring (112) is provided between each hollow substrate (110) and the corresponding hollow floating plate (120), and both ends of each first spring (112) are respectively in contact with the corresponding hollow substrate (110) and the hollow floating plate (120).

3. The size-adjustable press according to claim 2, characterized in that: One side of the bottom of the pressing block (400) has two protruding ends (420), and the two protruding ends (420) are correspondingly arranged below the two ends of the hollow substrate (110) of the third pressing part (300). A second guide column (113) is fixed on each of the protruding ends (420), and each of the second guide columns (113) is slidably matched with the hollow substrate (110) of the third pressing part (300). A second spring is provided between the hollow substrate (110) of the third pressing part (300) and each of the protruding ends (420). (114), the two ends of each second spring (114) are respectively in contact with the hollow base plate (110) and the corresponding protruding end (420) of the third pressing part (300); in the first state, the pressing surface of the hollow floating plate (120) of the third pressing part (300) is higher than the pressing surfaces of the other two hollow floating plates (120); in the second state, the pressing surfaces of the hollow floating plates (120) of the first pressing part (100), the second pressing part (200) and the third pressing part (300) are flush.

4. The size-adjustable press according to claim 3, characterized in that: The bottom surfaces of both ends of the hollow substrate (110) of the third pressing portion (300) are inlaid with first magnetic steel (310), and the bottom surface of each pressing block (400) is inlaid with second magnetic steel (440).

5. The size-adjustable press according to claim 2, characterized in that: The hollow floating plate (120) comprises a hollow bottom plate (121) and a hollow flexible pad (122) attached to each other. The bottom array of the hollow flexible pad (122) is provided with first protrusions (123). Each column of the first protrusions (123) is used to press a welding strip.

6. The size-adjustable press according to claim 5, characterized in that: A groove is provided at the bottom of the first protruding block (123), and a second protruding block (124) is provided between any two adjacent rows of the first protruding blocks (123).

7. The size-adjustable press according to claim 1, characterized in that: The first pressing portion (100) and the third pressing portion (300) are both provided with a plurality of circular holes (130) passing through the upper and lower parts.

8. The size-adjustable press according to claim 1, characterized in that: The top surface of each pressing block (400) is inlaid with a magnetic attraction plate (430).

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