Intermediate product produced in process of processing flaw pieces

Abstract

The utility model provides an intermediate product produced in the process of processing an edge piece, which relates to the technical field of recycling of single crystal edge pieces, and comprises hexahedrons which are sequentially spliced along a single direction and then bonded together, and the splicing surfaces of the hexahedrons are splicing surfaces; the surfaces of the hexahedrons are flat, and the thicknesses of the hexahedrons are consistent; the splicing surface is provided with an adhesive track, and the thickness of the adhesive track is uniform; the adhesive track is in a wave line shape or a broken line shape. A plurality of edge pieces are processed at a time, so that the processing efficiency can be improved, and the working hours are saved; due to the fact that the thicknesses of all the hexahedrons are consistent and adhesive gaps after the hexahedrons are spliced are consistent, wiring network immobilization during subsequent slicing is facilitated, and the slicing efficiency is improved. The gluing track is in a wavy line shape or a broken line shape, the contact area can be increased, the gluing effect is firmer, and the degumming risk is reduced. And the surface of the hexahedron is flat, so that the qualified rate of bonding can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of recycling single crystal edge skin, in particular to an intermediate product produced in the process of processing the edge skin. Background Art

[0002] At present, the conversion efficiency of solar PERC cells has reached a bottleneck period and it is difficult to make a major breakthrough. HJT cells are suitable for thin-film production and have great cost reduction potential. They are considered to be the N-type cell technology route with the most long-term development space.

[0003] Squaring the N-type edge skin and cutting it into half pieces can effectively increase the utilization rate of the single crystal round rod (the N-type edge skin comes from the scraps generated when the single crystal round rod is cut into square rods) and reduce the non-silicon cost of the single crystal manufacturing end.

[0004] In order to improve the processing efficiency and processing qualification rate of edge skins and save working hours, the present application provides an intermediate product produced in the process of processing edge skins. Utility Model Content

[0005] In view of the above situation, the utility model provides an intermediate product produced in the process of processing edge skin, which can improve processing efficiency, processing qualification rate, save working hours, and improve the qualification rate of the final product (half piece).

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides an intermediate product produced in the process of processing edge skin, which comprises hexahedrons which are sequentially spliced ​​and bonded together along a single direction, and the surface of the hexahedron used for splicing is the splicing surface;

[0008] The surface of the hexahedron is flat and the thickness of each hexahedron is consistent;

[0009] There are glue tracks on the joint surface, and the thickness of the glue tracks is uniform;

[0010] The glue track is wavy or broken line shaped.

[0011] In some embodiments of the present invention, the shape of the adhesive track is continuous.

[0012] In some embodiments of the present invention, the line shape of the adhesive track is composed of a plurality of discontinuous and evenly distributed adhesive dots.

[0013] In some embodiments of the present invention, a plurality of adhesive dots are evenly distributed.

[0014] In some embodiments of the utility model, the hexahedron is placed on a workbench, and a limit block, a gluing head and a three-coordinate robot are provided on the workbench; multiple limit blocks are arranged on the workbench in pairs for positioning the hexahedron, and the three-coordinate robot is used to drive the gluing head to move at a uniform speed along a predetermined trajectory.

[0015] In some embodiments of the present invention, the flatness of the surface of the hexahedron is less than 0.5 mm.

[0016] In some embodiments of the present invention, only the flatness of the joint surface of the hexahedron is less than 0.5 mm.

[0017] In some embodiments of the present invention, the number of the hexahedrons is twelve.

[0018] In some embodiments of the present invention, the length of the hexahedron is 640-900 mm, the width is 105 mm, and the height is 32.5±0.15 mm.

[0019] In some embodiments of the present invention, the length of the hexahedron is 640-900 mm, the width is 91 mm, and the height is 35.5±0.15 mm.

[0020] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0021] 1. Processing multiple edges at one time can improve processing efficiency and save working time.

[0022] Second, since the thickness of each hexahedron is consistent and the adhesive gaps after the hexahedrons are spliced ​​are consistent, it is beneficial to fix the wiring network during subsequent slicing, thereby improving the slicing efficiency.

[0023] 3. When the glue track is wavy or broken, the contact area can be increased (compared to a straight line), making the glue effect more solid and reducing the risk of debonding.

[0024] 4. The surface of the hexahedron is flat. On the one hand, it can improve the consistency of the size of each hexahedron (consistent height or thickness), and on the other hand, it improves the flatness of the joint surface of the hexahedron, so that two adjacent hexahedrons can be better spliced ​​together, which is conducive to improving the qualified rate of bonding.

[0025] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the side skin;

[0028] Figure 2 This is a schematic diagram of the structure after the arc top is removed from the edge skin;

[0029] Figure 3 This is a schematic diagram of the structure after the edge skin is removed from the ear material;

[0030] Figure 4 It is a schematic diagram of the structure of the intermediate product produced in the process of processing the edge skin;

[0031] Figure 5 This is a schematic diagram of the structure of the intermediate product after being cut off during the processing of the edge skin;

[0032] Figure 6 It is a schematic diagram of the structure of various adhesive tracks;

[0033] Figure 7 Schematic diagram of the glue coating equipment Figure 1 ;

[0034] Figure 8 Schematic diagram of the glue coating equipment Figure 2 .

[0035] Icons: 1-intermediate product produced in the process of processing edge skin, 11-hexahedron, 111-joining surface, 112-glue track, 2-arc top, 3-ear material, 41-workbench, 42-limit block, 43-glue coating head. DETAILED DESCRIPTION

[0036] In the following, only some exemplary embodiments are briefly described. As those skilled in the art can appreciate, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention.

[0037] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0038] Example 1

[0039] See also Figures 1 to 8 This embodiment provides an intermediate product produced in the process of processing edge skin, including 12 hexahedrons that are spliced ​​and bonded together in sequence along a single direction, and the surface of the hexahedron used for splicing is the splicing surface.

[0040] The length of the hexahedron is 640 to 900 mm, the width is about 105 mm, and the height is 32.5 ± 0.15 mm.

[0041] The flatness of the hexahedron surface is less than 0.5 mm. Specifically, only the flatness of the hexahedron joint surface is required to be less than 0.5 mm. The thickness of each hexahedron is consistent.

[0042] The thickness of the glue track on the joint surface of the hexahedron is uniform, and the glue track can be in a straight line, a wavy line or a broken line. The line shape of the glue track can be continuous or composed of a plurality of discontinuous and uniformly distributed dots of glue.

[0043] In other embodiments, the user can adjust the number of hexahedrons included in an intermediate product generated during a skinning process as needed.

[0044] Example 2

[0045] The difference from Example 1 is that in this embodiment, the length of the hexahedron is 640-900 mm, the width is about 91 mm, and the height is 35.5±0.15 mm.

[0046] See also Figures 1 to 8 The intermediate product produced during the processing of the edge skin in Example 1 or Example 2 is specifically produced by the following steps:

[0047] Step 1: Remove the top of the edge skin (the curved part on the top);

[0048] Step 2: Remove the ear material from the edge skin (the excess parts on both sides);

[0049] Step 3, polishing the surface of the edge skin after removing the ear material to obtain the above-mentioned hexahedron;

[0050] Step 4: splice a predetermined number of hexahedrons in a single direction and bond them together in sequence. After solidification, cut off the excess to obtain an intermediate product produced in the process of processing the edge skin.

[0051] Wherein, sequentially splicing and bonding a predetermined number of hexahedrons in a single direction comprises: applying or spotting glue on the splicing surfaces of the hexahedrons along a predetermined track using a glue coating device;

[0052] After obtaining the intermediate product produced in the process of processing the edge skin, it is cut into multiple square bars according to the predetermined size, and the square bars are chamfered, polished and sliced ​​to finally obtain qualified finished products.

[0053] The qualified finished product obtained in Example 1 is a 210-size half sheet, which has a length of 210 mm and a width of about 105 mm.

[0054] The qualified finished product obtained in Example 2 is a 182-gauge half sheet, which has a length of 182 mm and a width of about 91 mm.

[0055] The above-mentioned gluing equipment includes a workbench, a limit block, a gluing head and a three-coordinate manipulator (not shown in the figure). A plurality of limit blocks are arranged on the workbench in pairs for positioning the hexahedron. The gluing head is movably arranged above the workbench, and the three-coordinate manipulator is used to drive the gluing head to move at a constant speed along a predetermined trajectory. The three-coordinate manipulator moves the gluing head through the X, Y, and Z three-axis servo motor modules.

[0056] After applying glue, stack the hexahedrons.

[0057] The intermediate products produced in the process of processing the edge skin provided in Example 1 and Example 2 have at least the following beneficial effects:

[0058] 1. Processing 12 edges at a time can improve processing efficiency and save working time.

[0059] Second, since the thickness of each hexahedron is consistent and the adhesive gaps after the hexahedrons are spliced ​​are consistent, it is beneficial to fix the wiring network during subsequent slicing, thereby improving the slicing efficiency.

[0060] 3. When the glue track is wavy or broken, the contact area can be increased (compared to a straight line), making the glue effect more solid and reducing the risk of debonding.

[0061] 4. The surface of the hexahedron is flat. On the one hand, it can improve the consistency of the size of each hexahedron (consistent height or thickness), and on the other hand, it improves the flatness of the joint surface of the hexahedron, so that two adjacent hexahedrons can be better spliced ​​together, which is conducive to improving the qualified rate of bonding.

[0062] 5. Use a three-coordinate robot instead of manpower to drive the gluing head to move at a constant speed along a predetermined trajectory, and apply glue on the joint surface to obtain a wavy or broken line gluing trajectory, which is conducive to ensuring the uniform thickness of the gluing trajectory, making the joint surface half-full of glue, and reducing the chance of glue overflow, thereby avoiding the phenomenon of edge collapse in subsequent cutting and polishing processes, thereby improving the qualified rate.

[0063] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. In the absence of conflicts, the embodiments of the present application and the features in the embodiments may be combined with each other at will. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intermediate product produced during the processing of edge skin, characterized in that: It includes hexahedrons which are sequentially spliced ​​and bonded together along a single direction, wherein the surface of the hexahedron used for splicing is the splicing surface; The surface of the hexahedron is flat, and the thickness of each hexahedron is consistent; The joint surface is provided with a glue track, and the thickness of the glue track is uniform; The adhesive track is in a wavy line shape or a broken line shape.

2. The intermediate product produced in the process of processing the edge skin according to claim 1, characterized in that: The shape of the adhesive track is continuous.

3. The intermediate product produced in the process of processing the edge skin according to claim 1, characterized in that: The line shape of the adhesive track is composed of a plurality of discontinuous adhesive dots.

4. The intermediate product produced in the process of processing the edge skin according to claim 3, characterized in that: The plurality of dot-shaped adhesives are evenly distributed.

5. The intermediate product produced in the process of processing the edge skin according to claim 1, characterized in that: The hexahedron is placed on a workbench, on which a limit block, a gluing head and a three-coordinate robot are arranged; a plurality of limit blocks are arranged on the workbench in pairs for positioning the hexahedron, and the three-coordinate robot is used to drive the gluing head to move at a constant speed along a predetermined trajectory.

6. The intermediate product produced in the process of processing the edge skin according to claim 1, characterized in that: The flatness of the hexahedron surface is less than 0.5 mm.

7. The intermediate product produced in the process of processing the edge skin according to claim 6, characterized in that: The flatness of the joint surface of the hexahedron is less than 0.5 mm.

8. The intermediate product produced in the process of processing the edge skin according to claim 1, characterized in that: The number of the hexahedrons is 12.

9. The intermediate product produced in the process of processing the edge skin according to any one of claims 1 to 8, characterized in that: The length of the hexahedron is 640-900 mm, the width is 105 mm, and the height is 32.5±0.15 mm.

10. The intermediate product produced in the process of processing the edge skin according to any one of claims 1 to 8, characterized in that: The length of the hexahedron is 640-900 mm, the width is 91 mm, and the height is 35.5±0.15 mm.

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