Round stick adhesive marking tooling

Abstract

The present application relates to a round stick viscose marking tool, comprising a rotary turntable, the top end of the rotary turntable is provided with a round stick placing platform, the top of the round stick placing platform is concavely provided with a lifting plate, the inner ring surface of the lifting plate is concavely provided with a plurality of clamping grooves, and a locking piece is inserted in the clamping groove. The tool for round stick splicing and viscose concentric detection provides a detection method for detecting the concentricity of the crystal bar and the alignment of the crystal line after the short round stick splicing and viscose.

Description

Technical Field

[0001] This invention belongs to the field of round bar adhesive marking fixtures, specifically round bar adhesive marking fixtures. Background Technology

[0002] Currently, various crystalline silicon cell technologies are flourishing in the photovoltaic industry, each vying for dominance. For the upstream crystal pulling process at the cell end, besides differentiating between PN type and electrical properties (minority carrier lifetime, electrical resistance, oxygen content, and carbon content), for heterojunction cells (HJT), N-type monocrystalline silicon wafers require a minority carrier lifetime of no less than 500 μs and carbon and oxygen contents of less than 1 ppma and 14 ppma, respectively. Conventional N-type monocrystalline silicon wafers, on the other hand, require a minority carrier lifetime of no less than 800 μs and carbon and oxygen contents of less than 1 ppma and 14 ppma, respectively. 2ppma. Through comparison, it was found that heterojunctions have lower requirements for the electrical performance of monocrystalline silicon rods. Therefore, a small portion of the pulled monocrystalline long silicon rods that do not meet the requirements of conventional N-type silicon rods in terms of minority carrier lifetime and oxygen content are used to produce heterojunctions. These rods are usually short, ≤200mm in length, and are generally the heads of monocrystalline silicon rods. Due to their high oxygen content, they do not meet the conventional requirements and are used as remanufactured materials for cleaning, crushing, sorting, and re-drawing. However, due to the special requirements of heterojunctions, these "remanufactured materials" are not only not wasted, but can also be used as raw materials for producing heterojunction silicon wafers.

[0003] However, because these silicon rods are relatively short, they do not meet the minimum rod length requirements for machining, such as squaring and grinding. Therefore, multiple short rods need to be spliced ​​and glued together to ensure concentricity and crystal wire alignment before machining. Usually, the crystal rods are stacked and glued manually based on experience, and the crystal wires are visually aligned to meet the requirements for machining. However, because the diameter of the crystal rods varies slightly and the crystal wires are bent, without relevant tools to assist in inspection, there may be issues such as miscut crystal wires and excessively large or small edge distances of the square rods after machining, resulting in defective products. Therefore, a round rod gluing and marking fixture is proposed. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] Given the following technical problems in the existing technology: Because these silicon rods are relatively short, they do not meet the minimum processing rod length requirements for machining (square cutting and grinding). Therefore, multiple short rods need to be spliced ​​and glued together to ensure concentricity and crystal wire alignment before machining. Typically, this is done manually based on experience, stacking and gluing the rods, and visually aligning the crystal wires to meet machining requirements. However, due to slight differences in rod diameter and the presence of curved crystal wires, without the aid of relevant tools for inspection, machining may result in misaligned crystal wires, excessively large or small edge distances of the square rods, leading to defective (NG) defects.

[0006] To solve the above technical problems, the present invention provides the following technical solution: including a rotary table, the top of the rotary table is provided with a round bar placement platform, the top of the round bar placement platform is recessed with an installation groove, the inner ring surface of the installation groove is recessed with several snap-fit ​​grooves, and a locking member is inserted into the snap-fit ​​groove;

[0007] Insert short crystal rod one into the mounting slot, and the locking piece is locked between short crystal rod one and the inner wall of the mounting slot, so that short crystal rod one is locked on the round rod placement platform. Short crystal rod two is fixedly connected to the top of short crystal rod one by adhesive.

[0008] A dial indicator universal support is provided on the round bar placement platform, and a dial indicator is mounted on the dial indicator universal support. The probe of the dial indicator abuts against the surface of the second short crystal bar.

[0009] As a preferred technical solution for the round bar adhesive marking tool, the rotary table is rotatably connected to the rotary platform, and a motor is installed inside the rotary platform, with the motor's power output end connected to the rotary platform;

[0010] The motor can control the rotation of the rotary table.

[0011] As a preferred technical solution for the round bar adhesive marking fixture, the inner side of the round bar placement platform is provided with a threaded hole, and the screw passes through the threaded hole and is fixedly connected to the round bar placement platform.

[0012] As a preferred technical solution for the round bar adhesive marking fixture, the round bar placement platform includes a main body and a convex ring, and the convex ring is provided on the top of the main body.

[0013] As a preferred technical solution for the round bar adhesive marking fixture, the locking component includes a structural plate, a flat plate, a base, and a lifting plate. The top of the structural plate is provided with a flat plate. Both the flat plate and the structural plate are made of phenolic resin. A base is provided on one side of the structural plate. The top of the base is connected to the flat plate. A lifting plate is provided on the top of the flat plate. A structural reinforcement is connected between the lifting plate and the base.

[0014] As a preferred technical solution for the round bar adhesive marking fixture, the structural reinforcement includes a mechanism rod and attachment protrusions. The mechanism rod is L-shaped and connects to the lifting plate and the base. Several attachment protrusions are evenly arranged on the mechanism rod. The outer side of the attachment protrusions is fixedly connected to the base. The diameter of the mechanism rod is R. The angle between the line connecting the center of the attachment protrusions to the connection points of the attachment protrusions with the top and bottom of the mechanism rod is α.

[0015] As a preferred technical solution for the round bar adhesive marking tool, a limit block is provided on the side of the top of the structural plate away from the base.

[0016] The main functions are as follows:

[0017] 1. Rotary turntable: As a rotating component, it drives the platform on top of the round bar to rotate. It can be used with different structures for manual or automatic rotation. With gear ring structure or roller bearing structure, it can be used to manually rotate the platform for concentricity dial indicator testing. It can also be used with frequency converter motor to realize automatic rotation testing of the concentricity of the round bar.

[0018] 2. Round bar placement platform: It can place round bars of different diameters, including φ255mm, φ265mm, φ285mm and φ305mm. It has 4 platforms inside, which are distributed in a stepped manner. It can accommodate 10 / 10.5 / 11.2 / 12-inch round bars, and is used to limit and prevent slippage and deviation during the crystal bar bonding process.

[0019] 3. A dial indicator and a dial indicator universal bracket are used as a set. After the crystal rod is glued, the dial indicator is attached to the outer surface of the crystal rod to detect crystal lines and concentricity. The glued sections need to be tested on the corresponding crystal rods. The required detection accuracy is ≤0.20mm.

[0020] The beneficial effects of the round bar adhesive marking fixture of the present invention are as follows: the fixture for detecting the concentricity of the spliced ​​and glued round bars provides a method for detecting the concentricity of the crystal bars and the alignment of the crystal lines after splicing and gluing short round bars.

[0021] This tooling and crystal wire and concentricity detection method effectively eliminate the problem of poor dimensions after the glue rod is squared and reduce the abnormalities of glue rod squared and rod removal.

[0022] The locking mechanism, in conjunction with the snap-fit ​​slot, allows for quick locking of the round bar placement platform and the short crystal bar. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a top view of the structure of the present invention. Figure 1 ;

[0026] Figure 3 This is a schematic diagram of the connection structure between the rotary table and the bar placement platform of the present invention;

[0027] Figure 4 This is a top view of the structure of the present invention. Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the locking structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the structural dimensions of the present invention;

[0030] Figure 7 For the present invention Figure 4 A magnified schematic diagram of part A in the middle section;

[0031] Figure 8 For the present invention Figure 4 A magnified schematic diagram of part B in the middle section.

[0032] Reference numerals in the attached drawings: 1. Rotary turntable; 2. Round bar placement platform; 3. Short crystal bar one; 4. Short crystal bar two; 5. Dial indicator; 6. Dial indicator universal bracket; 7. Threaded hole; 8. Mounting groove; 9. Lifting plate; 10. Mechanism rod; 11. Base seat; 12. Flat plate; 13. Limiting block; 14. Structural plate; 15. Attachment protrusion ball; 16. Snap-fit ​​groove; 201. Main platform; 202. Protruding ring. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0037] like Figures 1-8 As shown, the present invention proposes a round bar adhesive marking fixture, including a rotary table 1, a round bar placement platform 2 is provided at the top of the rotary table 1, an installation groove 8 is recessed at the top of the round bar placement platform 2, and several snap-fit ​​grooves 16 are recessed on the inner ring surface of the installation groove 8, and locking components are inserted into the snap-fit ​​grooves 16.

[0038] Short crystal rod 3 is inserted into the mounting slot 8, and the locking piece is locked between short crystal rod 3 and the inner wall of the mounting slot 8, so that short crystal rod 3 is locked on the round rod placement platform 2. Short crystal rod 4 is fixedly connected to the top of short crystal rod 3 by adhesive.

[0039] The round bar placement platform 2 is provided with a dial indicator universal bracket 6, and a dial indicator 5 is mounted on the dial indicator universal bracket 6. The probe of the dial indicator 5 abuts against the surface of the short crystal bar 4.

[0040] The rotary table 1 is rotatably connected to the rotary platform, and a motor is installed inside the rotary platform, with the motor's power output end connected to the rotary platform.

[0041] The motor can control the rotation of the rotary table 1.

[0042] The inner side of the round bar placement platform is recessed with a threaded hole 7, and the mounting groove 8 is recessed with a threaded hole 7. The screw passes through the threaded hole 7 and is fixedly connected to the round bar placement platform 2.

[0043] The round bar placement platform 2 includes a main body 201 and a protruding ring 202, with the protruding ring 202 provided on the top of the main body 201.

[0044] The locking component includes a structural plate 14, a flat plate 12, a base 11, and a lifting plate 9. The top of the structural plate 14 is provided with a flat plate 12. Both the flat plate 12 and the structural plate 14 are made of phenolic resin. The base 11 is provided on one side of the structural plate 14. The top of the base 11 is connected to the flat plate 12. The top of the flat plate 12 is provided with a lifting plate 9. A structural reinforcement is connected between the lifting plate 9 and the base 11.

[0045] The structural reinforcement includes a mechanism rod 10 and attachment protrusions 15. The mechanism rod 10 is L-shaped and connects to the lifting plate 9 and the base 11. Several attachment protrusions 15 are evenly arranged on the mechanism rod 10. The outer side of the attachment protrusions 15 is fixedly connected to the base 11. The diameter of the mechanism rod 10 is R. The center of the attachment protrusions 15 is connected to the connection points of the attachment protrusions 15 with the top and bottom of the mechanism rod 10. The included angle between the lines is α, which is greater than 90 degrees.

[0046] A limiting block 13 is provided on the top side of the structural plate 14 away from the base 11.

[0047] The main functions are as follows:

[0048] 1. Rotary turntable: As a rotating component, it drives the platform on top of the round bar to rotate. It can be used with different structures for manual or automatic rotation. With gear ring structure or roller bearing structure, it can be used to manually rotate the platform for concentricity dial indicator testing. It can also be used with frequency converter motor to realize automatic rotation testing of the concentricity of the round bar.

[0049] 2. Round bar placement platform: It can place round bars of different diameters, including φ255mm, φ265mm, φ285mm and φ305mm. It has 4 platforms inside, which are distributed in a stepped manner. It can accommodate 10 / 10.5 / 11.2 / 12-inch round bars, and is used to limit and prevent slippage and deviation during the crystal bar bonding process.

[0050] 3. A dial indicator and a dial indicator universal bracket are used as a set. After the crystal rod is glued, the dial indicator is attached to the outer surface of the crystal rod to detect crystal lines and concentricity. The glued sections need to be tested on the corresponding crystal rods. The required detection accuracy is ≤0.20mm.

[0051] The main functions of the above components are as follows:

[0052] 1. Rotary turntable: As a rotating component, it drives the platform on top of the round bar to rotate. It can be used with different structures for manual or automatic rotation. With gear ring structure or roller bearing structure, it can be used to manually rotate the platform for concentricity dial indicator testing. It can also be used with frequency converter motor to realize automatic rotation testing of the concentricity of the round bar.

[0053] 2. Round bar placement platform: It can place round bars of different diameters (φ255mm, φ265mm, φ285mm, φ305mm). It has 4 platforms inside, which are distributed in a stepped manner. It can accommodate 10 / 10.5 / 11.2 / 12-inch round bars, and is used to limit and prevent slippage and deviation during the crystal bar bonding process.

[0054] 3. A dial indicator and a dial indicator universal bracket are used to inspect crystal lines and concentricity after the crystal rod is glued. (For each glued section, the dial indicator needs to be used on the corresponding crystal rod for inspection, and the inspection accuracy is required to be ≤0.20mm.)

[0055] The rotary table and the round bar placement platform are locked together by a threaded connection, and the rotation is used for dial indicator testing.

[0056] The limiting block 13 restricts the position of the structural plate 14, making the structural plate 14 suspended, which facilitates the application of force on the lower side of the structural plate 14.

[0057] The specific implementation steps and methods are as follows:

[0058] 1. Material preparation: Prepare two or more single crystal wafers of the same diameter;

[0059] 2. Material placement: Place the single crystal wafer with a flat, undamaged, and unslanted end face down into the slot corresponding to the diameter.

[0060] 3. Dial indicator test: Fix the dial indicator base on the platform where the round bar is placed, adjust the angle and direction of the universal bracket of the dial indicator so that the probe contacts and fits the arc surface of the round bar, rotate it one or more times, observe and record the probe runout value ≤0.2mm (if it is greater than 0.2mm, the position of the round bar needs to be adjusted and the dial indicator test needs to be repeated until the requirements are met).

[0061] 4. Gluing the round rods: Apply resin A / B glue evenly to the upper surface of the first round rod, and align the crystal lines and center of the second round rod with the upper surface of the first rod, and then stack and bond them together.

[0062] 5. Dial gauge test: Repeat step 3 to test the concentricity of the second crystal rod. The dial gauge probe runout value should be ≤0.2mm. If it exceeds 0.2mm, fine-tune the position of the second round rod and add glue to the corresponding position to fill it according to the dial gauge runout data until the dial gauge value meets the requirements.

[0063] 6. Adhesive settling: If the gauge readings are within acceptable limits, allow the adhesive to stand for 8-10 hours before proceeding with the sizing process.

[0064] Multi-segment splicing adhesive: Repeat steps 3 to 6.

[0065] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0066] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A round bar adhesive marking fixture, characterized in that: It includes a rotary table (1), the top of which is provided with a round bar placement platform (2), the top of which is recessed with an installation groove (8), and the inner surface of the installation groove (8) is recessed with several snap-fit ​​grooves (16), and a locking member is inserted into the snap-fit ​​groove (16). Insert short crystal rod one (3) into the mounting groove (8), and the locking piece is locked between short crystal rod one (3) and the inner wall of the mounting groove (8), so that short crystal rod one (3) is locked on the round rod placement platform (2). Short crystal rod two (4) is fixedly connected to the top of short crystal rod one (3) by adhesive. The round bar placement platform (2) is provided with a dial indicator universal bracket (6), and a dial indicator (5) is installed on the dial indicator universal bracket (6). The probe of the dial indicator (5) abuts against the surface of the short crystal bar (4).

2. The round bar adhesive marking fixture according to claim 1, characterized in that: The rotary table (1) is rotatably connected to the rotating platform, and a motor is installed inside the rotating platform. The power output end of the motor is connected to the rotating platform.

3. The round bar adhesive marking fixture according to claim 1, characterized in that: The inner side of the round bar placement platform (2) is recessed with a threaded hole (7), and the screw passes through the threaded hole (7) and is fixedly connected to the round bar placement platform (2).

4. The round bar adhesive marking fixture according to claim 1, characterized in that: The round bar placement platform (2) includes a main body (201) and a convex ring (202), and the top of the main body (201) is provided with the convex ring (202).

5. The round bar adhesive marking fixture according to claim 1, characterized in that: The locking component includes a structural plate (14), a flat plate (12), a base (11), and a lifting plate (9). The top of the structural plate (14) is provided with a flat plate (12). Both the flat plate (12) and the structural plate (14) are made of phenolic resin. The base (11) is provided on one side of the structural plate (14). The top of the base (11) is connected to the flat plate (12). The top of the flat plate (12) is provided with a lifting plate (9). A structural reinforcement is connected between the lifting plate (9) and the base (11).

6. The round bar adhesive marking fixture according to claim 5, characterized in that: The structural reinforcement includes a mechanism rod (10) and attachment protrusions (15). The mechanism rod (10) is L-shaped and connects the lifting plate (9) and the base seat (11). Several attachment protrusions (15) are evenly arranged on the mechanism rod (10).

7. The round bar adhesive marking fixture according to claim 1, characterized in that: A limiting block is provided on the side of the top of the structural plate (14) away from the base (11).

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