Positioning clamping groove plate of welding strip and series welding machine

Abstract

The utility model relates to the photovoltaic related technical field, and provides a welding strip positioning clamping groove plate and a series welding machine. The positioning clamping groove plate comprises a bottom plate used for conveying a welding strip; the positioning clamping piece is arranged on the bottom plate and comprises at least one pair of positioning guide columns, a slit is formed between each pair of positioning guide columns in a matched mode, and the slits are used for guiding and limiting the conveyed welding strip; and the soldering flux circulating groove is formed in the bottom plate, is positioned between two columns of each pair of positioning guide columns, and is used for collecting and conveying soldering flux. The soldering flux which should be accumulated originally can flow to the position below the positioning clamping groove plate along the soldering flux circulating grooves through the corresponding soldering flux circulating grooves in the bottom plate of the positioning clamping groove plate, the situation that the soldering flux is accumulated on the positioning clamping groove plate, the welding effect is affected is avoided, and manpower and material resources are greatly saved. In addition, the positioning clamping groove plate has the advantages of being low in cost, high in applicability and the like.

Description

Technical Field

[0001] The utility model relates to the photovoltaic related technical field, in particular to a positioning slot plate of a welding strip and a string welding machine. Background Art

[0002] In the related technology, with the rapid update and iteration of solar cells, there are more and more requirements for the soldering tapes for different cell series, and even different types of soldering tapes are required for the same cell. Since each type of soldering tape corresponds to a corresponding flux, the corresponding flux must also be replaced when the soldering tape is replaced, so the frequency of flux replacement will also increase accordingly.

[0003] However, the current solder ribbon slot cannot be replaced as a set like the solder ribbon and flux. The existing solder ribbon slot also has the phenomenon of flux crystallization in the slot. When replacing the solder ribbon and the corresponding flux, the previous flux will be crystallized and remain in the slot, causing the new solder ribbon and flux to be affected by the residual flux crystallization, and thus unable to achieve the expected welding effect. Although workers will clean the flux crystals in the solder ribbon slot every time they replace it, it is impossible to completely remove it, and this method is also time-consuming and labor-intensive. Utility Model Content

[0004] In view of this, the purpose of the present application is to provide a positioning slot plate for a soldering strip and a string soldering machine, which are used to solve the technical problem in the prior art that the flux remains in the soldering strip slot of the string soldering machine, thereby affecting the welding effect.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] In a first aspect, the present application provides a positioning slot plate for a welding strip, the positioning slot plate comprising:

[0007] Bottom plate, used for conveying welding strip;

[0008] A positioning fixture is arranged on the bottom plate, and includes at least one pair of positioning guide posts, wherein a slit is formed between each pair of the positioning guide posts, and the slit is used to guide and limit the conveyed welding strip;

[0009] The soldering flux flow groove is arranged on the bottom plate and located between the two pillars of each pair of positioning guide pillars, and is used for collecting and conveying the soldering flux.

[0010] According to some embodiments of the present application, a guide curved surface is formed on the side circumference of the positioning guide column, wherein the guide curved surfaces of each pair of the positioning guide columns are arranged opposite to each other.

[0011] According to some embodiments of the present application, the positioning guide column is a circular columnar structure.

[0012] One end of the positioning guide column is arranged on the bottom plate, and the other end extends upward in a vertical direction.

[0013] According to some embodiments of the present application, the flux flow groove is opened along the conveying direction of the soldering ribbon.

[0014] According to some embodiments of the present application, a slot width of the flux flow slot is greater than a diameter of the soldering ribbon.

[0015] According to some embodiments of the present application, both inner side walls of the flux flow groove form an obtuse angle with the groove bottom surface.

[0016] According to some embodiments of the present application, arc surfaces are formed at the connection between the two inner side walls of the flux flow groove and the groove bottom surface for transition connection.

[0017] According to some embodiments of the present application, along the conveying direction of the solder tape, the groove depth of the flux flow groove gradually increases.

[0018] According to some embodiments of the present application, the positioning card slot plate further includes: a base for detachably mounting the positioning card slot plate;

[0019] Wherein, a mounting groove is provided on the base, a slide groove is provided in the mounting groove, and the slide groove is used to cooperate with the slide rail on the positioning card slot plate.

[0020] In a second aspect, the present application further provides a photovoltaic cell string welding machine, the string welding machine comprising: a positioning slot plate as described in some embodiments of the present application.

[0021] In the above technical solution, a positioning slot plate and a string welding machine for a welding strip are provided. The positioning slot plate has the following advantages after being improved: 1. The effect is obvious. Through the corresponding flux flow groove, the flux that should be accumulated can flow along the flux flow groove to the bottom of the positioning slot plate, avoiding accumulation on the positioning slot plate and affecting the welding effect; 2. Low cost. It only needs to process the corresponding flux flow groove on the bottom plate of the positioning slot plate; 3. Strong applicability. Low-temperature flux and high-temperature flux can be used. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 is an overall schematic diagram of a positioning slot plate according to an exemplary embodiment;

[0024] Figure 2 is a front view of a positioning slot plate according to an exemplary embodiment;

[0025] Figure 3 is a left side view of a positioning slot plate according to an exemplary embodiment;

[0026] Figure 4 is a front view of a positioning card slot plate with a slide rail according to an exemplary embodiment;

[0027] Figure 5 is a schematic diagram of a base according to an exemplary embodiment;

[0028] Figure 6 The figure is a schematic diagram of a positioning card slot plate without a flux flow slot according to an exemplary embodiment.

[0029] In the figure: 10, bottom plate; 101, slide rail; 20, positioning guide column; 30, flux flow groove; 40, base; 401, mounting groove; 402, slide groove. DETAILED DESCRIPTION

[0030] The present application is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present application will become clearer and more specific.

[0031] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0032] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0033] In the related art, the existing solder ribbon slot also has the phenomenon of flux crystallization in the slot. When replacing the solder ribbon and the corresponding flux, the previous flux will be crystallized and remain in the slot, which will cause the new solder ribbon and flux to be affected by the residual flux crystallization, and thus fail to achieve the expected welding effect. Although workers will clean the flux crystallization in the solder ribbon slot every time they replace it, it is impossible to completely remove it, and this method is also time-consuming and labor-intensive.

[0034] The present application provides a positioning slot plate and a string soldering machine for a soldering strip. The positioning slot plate is redesigned, and a flux flow slot is added to its bottom plate. The flux flow slot is located between two positioning guide pillars, so that when the soldering strip passes through the slit formed by the two positioning guide pillars, the residual flux on the soldering strip can be collected and flowed to the bottom of the positioning slot plate through the flux flow slot, thereby avoiding crystallization at the slit position.

[0035] The technical solution of this embodiment is described in detail below in conjunction with the accompanying drawings. The following embodiments and implementation methods can be combined with each other if there is no conflict.

[0036] In an exemplary embodiment of the utility model, a positioning slot plate for a welding strip is provided, such as Figure 1-Figure 3 As shown, the positioning card slot plate includes: a base plate 10, a positioning card member arranged on the base plate 10, and a flux flow slot 30 opened on the base plate 10.

[0037] The base plate 10 is used to convey the solder strip; the positioning fixture is arranged on the base plate 10, and the positioning fixture includes: at least one pair of positioning guide columns 20, wherein a slit is formed between each pair of positioning guide columns 20, and the slit is used to guide and limit the conveyed solder strip; the flux flow groove 30 is opened on the base plate 10 and is located between the two columns of each pair of positioning guide columns 20, and the flux flow groove 30 is used to collect and convey the flux.

[0038] In this exemplary embodiment, by setting a positioning fixture on the bottom plate 10 of the positioning slot plate, a slit is formed between each pair of positioning guide pillars 20 in the positioning fixture, and the solder strip passes through the corresponding slit during the conveying process to guide the solder strip. Since the positioning slot plate is optimized in this embodiment, a flux flow groove 30 is provided in the bottom plate 10 portion corresponding to the two positioning guide pillars 20, so that the solder strip can collect excess solder flux when passing through the slit formed by the positioning guide pillars 20, and the collected solder flux can flow to the bottom of the solder strip slot through the flow groove, thereby avoiding residual crystallization of the solder flux on the positioning slot plate.

[0039] It should be noted that the number of positioning guide columns 20 in the positioning card can be set according to actual needs. When the positioning card includes multiple pairs of positioning guide columns 20, the multiple pairs of positioning guide columns 20 are arranged in at least one row along a preset direction on the base plate 10, so that multiple welding strips can be guided and transported at the same time.

[0040] In some exemplary embodiments, considering that the friction between the positioning guide column 20 and the welding strip may cause damage to the welding strip, the side surface of the positioning guide column 20 is also optimized in this embodiment. Figure 1-Figure 3 As shown, the side circumference of the positioning guide column 20 is formed with a guiding curved surface, wherein the guiding curved surfaces of each pair of positioning guide columns 20 are arranged opposite to each other.

[0041] In this embodiment, based on the side surfaces of the two relatively arranged positioning guide columns 20, a pair of mutually matching guide curved surfaces are formed on one side through which the welding strip is passed. On the one hand, the friction between the welding strip and the positioning guide columns 20 can be reduced, thereby effectively reducing the damage to the welding strip; on the other hand, the conveying efficiency of the welding strip can also be ensured.

[0042] For example, Figure 1-Figure 3 As shown, the positioning guide column 20 is a circular columnar structure. Based on the side surface of the circular columnar structure of the positioning guide column 20, the positioning and conveying of the welding strip is formed. One end of the positioning guide column 20 is arranged on the bottom plate 10, and the other end extends upward in the vertical direction.

[0043] Further optionally, if Figure 1-Figure 3 As shown, the positioning guide column 20 can be fixedly connected to the base plate 10, but considering the disassembly efficiency of the positioning guide column 20, the positioning guide column 20 can also be detachably connected to the base plate 10.

[0044] In addition, in order to further reduce friction, the positioning guide column 20 can be rotatably connected to the base plate 10, that is, a pair of transmission structures similar to "rollers" are formed to further reduce friction on the welding strip.

[0045] In this embodiment, a pair of positioning guide columns 20 form a slit to guide the positioning of the welding strip. It should be noted that when the welding strip passes through the slit, the circular columnar structure can achieve the above effect very well. It should be noted that in addition to the positioning guide column 20 with a circular columnar structure, an elliptical columnar structure or other columnar structures with a circular arc surface / elliptical surface can also be used, so as to minimize the contact area between the welding strip and the side wall of the positioning guide column 20.

[0046] In some exemplary embodiments, it is considered that when the solder ribbon passes through the slit, the solder ribbon will rub against the positioning guide column 20, and the residual solder flux on the positioning guide column 20 will flow to the bottom of the bottom plate 10. Based on this, when the solder flux flow groove 30 is opened on the bottom plate 10, it is necessary to ensure that the opening direction of the solder flux flow groove 30 is consistent with the conveying direction of the solder ribbon, so that the solder flux can be better collected. For example, Figure 1-Figure 3 As shown, the flux flow channel 30 is opened along the conveying direction of the solder ribbon.

[0047] Since the soldering flux on the soldering strip mainly drips at the position where it meets the positioning guide column 20, the length of the soldering flux flow groove 30 can be 1 cm to 5 cm. The specific length can be determined by combining the size of the positioning guide column 20, the size of the soldering strip and the size of the bottom plate 10.

[0048] In some exemplary embodiments, the flux flow groove 30 may be an oblique rectangular groove, that is, the groove depth of the flux flow groove 30 gradually increases along the conveying direction of the solder strip. It should be noted that the flux flow groove 30 is not limited to a rectangular groove, but may also be an oblique groove of other shapes, as long as it has the function of guiding the flux to the bottom of the bottom plate 10. Exemplarily, the depth of the starting section of the flux flow groove 30 is 0 mm, and the depth of the end section ranges from 2 mm to 5 mm.

[0049] To improve the collection effect of the soldering flux, illustratively, the slot width of the soldering flux flow slot 30 is greater than the diameter of the soldering ribbon. It should be noted that the slot width refers to the width at the edge of the soldering flux guide slot.

[0050] Optionally, considering that the diameter of the soldering ribbon is generally 0.2 mm-0.32 mm, in this embodiment, the width of the flux flow groove 30 is in the range of 0.5 mm-1 mm.

[0051] In some exemplary embodiments, the flux flow groove 30 can be further adjusted to a groove structure that is wide at the top and narrow at the bottom, that is, the two inner sides of the flux flow groove 30 are prevented from being made into inclined surfaces. Exemplarily, the two inner side walls of the flux flow groove 30 are both at an obtuse angle to the bottom surface of the groove. This style of groove structure can ensure the collection effect on the one hand, and on the other hand, it can avoid jamming between the solder ribbon and the flux flow groove 30 when the solder ribbon passes through the slit.

[0052] Further optionally, arc surfaces are formed at the connection between the two inner side walls of the flux flow groove 30 and the groove bottom surface for transition connection, thereby ensuring the guiding effect on the flux.

[0053] In some exemplary embodiments, when the bottom plate 10 and the positioning card parts need to be disassembled and replaced for maintenance and cleaning or to adapt to different sizes of solder strips, if the solder strip slot cannot be replaced as a set like the solder strip and the solder flux, the entire positioning card slot plate needs to be disassembled and replaced, which reduces the replacement efficiency. Figure 4-Figure 5 As shown, the positioning card slot plate further includes: a base 40 for detachably mounting the positioning card slot plate. The base 40 is provided with a mounting groove 401, and a slide groove 402 is provided in the mounting groove 401, and the slide groove 402 is used to cooperate with the slide rail 101 on the positioning card slot plate.

[0054] Specifically, after fixing the base 40 by a corresponding fixing frame or directly setting the base 40 on the stringer, the base 40 is relatively fixed to the stringer; the bottom plate 10 can be understood as a slider, and then the bottom plate 10 and the base 40 are assembled, and the bottom plate 10 is used as a bearing plate for the positioning guide column 20 and the flux flow groove 30. Based on the detachable connection between the bottom plate 10 and the base 40, when the bottom plate 10 needs to be removed, it only needs to be slid out of the installation groove 401. In this embodiment, based on this scheme, when there is flux accumulation between the positioning guide column 20 and the slit formed by it, if it cannot be discharged through the flux flow groove 30 and needs to be removed for cleaning or when replacing solder strips of different specifications, the slider can be replaced accordingly, which can not only solve the influence of the flux crystallization on the tie slot and the replacement of the solder strip, but also greatly improve the disassembly and assembly efficiency.

[0055] It should be noted that, in the case of using the method of detachably setting the bottom plate 10 on the base 40, the flux flow groove may not be provided. Figure 5-Figure 6 shown.

[0056] The exemplary embodiment of the utility model further provides a string welding machine for photovoltaic cells, the string welding machine comprises any one of the positioning slot plates in the above embodiments, and a tray correspondingly arranged below the positioning slot plate. The tray is used to collect soldering flux.

[0057] Based on the redesigned positioning slot plate in the above embodiment, the residual flux on the positioning guide column 20 and the corresponding base plate 10 can flow to the tray below the positioning slot plate through the flux flow groove 30, effectively avoiding the accumulation of crystals in the narrow gap.

[0058] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0059] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] The present application has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various replacements and improvements may be made to the present application, all of which fall within the scope of protection of the present application.

Claims

1. A positioning slot plate for a welding strip, characterized in that: The positioning card slot plate comprises: Bottom plate, used for conveying welding strip; A positioning fixture is arranged on the bottom plate, and includes at least one pair of positioning guide posts, wherein a slit is formed between each pair of the positioning guide posts, and the slit is used to guide and limit the conveyed welding strip; A soldering flux flow groove is provided on the bottom plate and is located between two pillars of each pair of positioning guide pillars, and is used for collecting and conveying soldering flux; A base is used for detachably installing the positioning card slot plate. A mounting groove is provided on the base. A slide groove is provided in the mounting groove. The slide groove is used to cooperate with the slide rail on the positioning card slot plate.

2. The positioning slot plate of the welding strip according to claim 1, characterized in that: The side circumference of the positioning guide column is formed with a guiding curved surface, wherein the guiding curved surfaces of each pair of the positioning guide columns are arranged opposite to each other.

3. The positioning slot plate of the welding strip according to claim 2, characterized in that: The positioning guide column is a circular columnar structure. One end of the positioning guide column is arranged on the bottom plate, and the other end extends upward in a vertical direction.

4. The positioning slot plate of the welding strip according to claim 1, characterized in that: The soldering flux flow groove is opened along the conveying direction of the soldering ribbon.

5. The positioning slot plate of the welding strip according to claim 4, characterized in that: The width of the slot of the soldering flux flow slot is greater than the diameter of the soldering ribbon.

6. The positioning slot plate of the welding strip according to claim 5, characterized in that: Both inner side wall surfaces of the soldering flux flow groove form an obtuse angle with the groove bottom surface.

7. The positioning slot plate of the welding strip according to claim 6, characterized in that: The connection between the two inner side walls of the soldering flux flow groove and the groove bottom surface forms an arc surface for transition connection.

8. The positioning slot plate of the welding strip according to claim 4, characterized in that: Along the conveying direction of the soldering ribbon, the slotting depth of the flux flow slot gradually increases.

9. A string welding machine for photovoltaic cells, characterized in that: The string welding machine comprises the positioning slot plate described in any one of claims 1-8.

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