Edge breakage prevention device and squaring machine

Abstract

The utility model provides an edge breakage prevention device and a squaring machine. The edge breakage prevention device comprises a mounting frame (1); the mounting arms (2) are arranged on two opposite sides of the mounting frame (1); the telescopic cylinder (3) is arranged on the mounting arm (2); the pressing block (4) is arranged at the telescopic end of the telescopic air cylinder (3), and the pressing surface of the pressing block (4) is provided with a silicon rod pressing area and an edge skin pressing area; and the pressure regulating valve is connected with the telescopic cylinder (3) and is used for regulating the output force of the telescopic cylinder (3). According to the edge breakage prevention device, stable pressing force can be maintained in the pressing process of the edge breakage prevention device, and the edge breakage phenomenon of a silicon rod is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting equipment technology, and more specifically, to an anti-chipping device and a squaring machine. Background Technology

[0002] With the green transformation of the global energy structure, photovoltaic solar power generation technology, as an important component of renewable energy, is receiving increasing attention and developing rapidly. In the photovoltaic industry chain, the production of crystalline silicon solar cells occupies a core position. The basic material, silicon wafers, is typically made from high-quality monocrystalline silicon rods through a series of complex processing steps. This process mainly includes: first, precisely cutting the original long silicon rods into short silicon rods that are easier to process further; then, the short silicon rods need to be square-cut to obtain silicon rods with rectangular cross-sections; next, the surface of the cut silicon rods is ground and chamfered to improve their structure and mechanical properties; finally, the silicon rods are transformed into thin wafers, i.e., silicon wafers, through slicing operations, for use in the manufacture of solar cells.

[0003] In the crucial step of squaring silicon ingots, while the wire saw cutting technology achieves efficient and precise cutting, it also presents a significant technical challenge—edge chipping. At the moment the wire saw exits the silicon ingot after its operation, due to a lack of effective support and positioning, the cut edge is prone to relative displacement with the main body of the silicon ingot, leading to cracks or damage at the ingot's edge. This severely impacts the yield of silicon wafers and the final performance of the battery modules.

[0004] To address this challenge, various solutions have been explored in existing technologies. One typical approach is to use edge clamps to simultaneously clamp the silicon rod body and the edge to prevent displacement of the edge.

[0005] However, during long-term use, due to the usage environment or the edge clamp itself, insufficient or excessive clamping force may occur, leading to large edge breakage of the silicon rod. Utility Model Content

[0006] The main purpose of this invention is to provide an anti-chipping device and a squaring machine, which can maintain a stable clamping force during the clamping process and effectively improve the chipping phenomenon of silicon rods.

[0007] To achieve the above objectives, according to one aspect of the present invention, an anti-chipping device is provided, comprising:

[0008] Mounting rack;

[0009] Mounting arms are located on two opposite sides of the mounting bracket;

[0010] Telescopic cylinder, mounted on the mounting arm;

[0011] The pressure block is located at the telescopic end of the telescopic cylinder. The pressure surface of the pressure block has a silicon rod pressing area and an edge pressing area.

[0012] The pressure regulating valve is connected to the telescopic cylinder and adjusts the output force of the telescopic cylinder.

[0013] Furthermore, the telescopic cylinder is an anti-rotation cylinder.

[0014] Furthermore, a cylinder seat is installed at the end of the mounting arm away from the mounting bracket, and the telescopic cylinder is mounted on the cylinder seat.

[0015] Furthermore, the telescopic cylinder has a protective cover on its telescopic end. The first end of the protective cover is mounted on the cylinder seat, and the second end is mounted on the pressure block. The protective cover can extend and retract according to the movement of the pressure block.

[0016] Furthermore, the protective cover is sealed to the cylinder seat and the pressure block.

[0017] Furthermore, the pressure block also includes two protrusions spaced apart, one of which forms a silicon rod pressing area, and the other forms an edge pressing area.

[0018] Furthermore, flexible pads are provided in both the silicon rod clamping area and the edge clamping area.

[0019] Furthermore, the flexible pad has clamping protrusions at both ends along its length on the side away from the pressure block, and a material reduction groove is formed between the clamping protrusions at both ends of the flexible pad.

[0020] Furthermore, the two mounting arms located on opposite sides of the mounting frame extend laterally toward the same side of the mounting frame, with the two mounting arms positioned opposite each other and forming a clearance space between them.

[0021] According to another aspect of the present invention, a squaring machine is provided, including an anti-chipping device, which is the aforementioned anti-chipping device.

[0022] By applying the technical solution of this utility model, the anti-chipping device uses a telescopic cylinder to output the clamping force. A pressure regulating valve connected to the telescopic cylinder allows for precise adjustment of the clamping force output, ensuring a continuous and stable clamping force. This maintains the clamping force of the pressure block on the silicon rod and edge skin at an optimal level, avoiding problems such as damage to the silicon rod due to excessive clamping force or unstable edge skin due to insufficient clamping force. This helps improve processing accuracy and product quality. The pressure surface of the pressure block is designed with a silicon rod clamping area and an edge skin clamping area. After the silicon rod is cut, the anti-chipping device can simultaneously clamp the silicon rod and its resulting edge skin, preventing relative movement between the edge skin and the silicon rod. This avoids edge chipping caused by moisture adsorption force adhering to the silicon rod. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 A three-dimensional structural schematic diagram of an anti-chipping device according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram of the anti-chipping device according to an embodiment of the present invention is shown;

[0026] Figure 3 A side view of the anti-chipping device according to an embodiment of the present invention is shown; and

[0027] Figure 4 A top view of the anti-chipping device according to an embodiment of the present invention is shown.

[0028] The above figures include the following reference numerals:

[0029] 1. Mounting bracket; 2. Mounting arm; 3. Telescopic cylinder; 4. Pressure block; 5. Cylinder cover; 6. Cylinder seat; 7. Protective cover; 8. Protrusion; 9. Flexible pad; 10. Pressing protrusion; 11. Material reduction groove; 12. Clearance space; 13. Silicon rod; 14. Edge skin. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] See also Figures 1 to 4As shown, according to an embodiment of the present invention, the anti-chipping device includes: a mounting frame 1; mounting arms 2, disposed on two opposite sides of the mounting frame 1; a telescopic cylinder 3, disposed on the mounting arm 2; a pressure block 4, disposed on the telescopic end of the telescopic cylinder 3, the pressure surface of the pressure block 4 having a silicon rod pressing area and an edge pressing area; and a pressure regulating valve, connected to the telescopic cylinder 3, and adjusting the output force of the telescopic cylinder 3.

[0034] The anti-chipping device uses a telescopic cylinder 3 to output clamping force. Connected to the telescopic cylinder 3 via a pressure regulating valve, the pressure output of the telescopic cylinder 3 can be precisely adjusted, ensuring a continuous and stable clamping force. This guarantees that the clamping force of the pressure block 4 on the silicon rod 13 and the edge skin 14 remains at an optimal level, preventing damage to the silicon rod 13 due to excessive clamping force or instability of the edge skin 14 due to insufficient clamping force. This helps improve processing accuracy and product quality. The pressure surface of the pressure block 4 is designed with a clamping area for the silicon rod 13 and a clamping area for the edge skin 14. After the silicon rod 13 is cut, the anti-chipping device can simultaneously clamp the silicon rod 13 and the resulting edge skin 14, preventing relative movement between the edge skin 14 and the silicon rod 13. This avoids edge chipping caused by moisture adsorption, where the edge skin 14 adheres to the silicon rod 13.

[0035] The pressure block 4 acts on both the silicon rod 13 and the edge skin 14, ensuring the stability of the edge skin 14 after cutting. This can significantly reduce the edge chipping caused by the movement of the edge skin 14. Combined with the stable control of the output force of the telescopic cylinder 3, the edge chipping is stably controlled within a small range, such as within 0.5mm, and there is no serrated edge chipping, which improves the yield.

[0036] Mounting arms 2 are provided on two opposite sides of the mounting bracket 1, which can simultaneously press and fix the edge skin 14 produced by the silicon rod 13 from both sides after the silicon rod 13 is cut, further ensuring the stability of the edge skin 14 structure during the cutting process of the silicon rod 13 and avoiding the occurrence of edge breakage.

[0037] In this embodiment, the silicon rod 13 is specifically a square rod after cutting. After the square rod is cut, the remaining material after cutting will form an edge skin on the side of the square rod.

[0038] In one embodiment, the telescopic cylinder 3 is an anti-rotation cylinder.

[0039] In the processing environment, vibrations and impacts may occur. Under these conditions, a conventional telescopic cylinder 3 may rotate, leading to inaccurate positioning of the pressure block 4. By employing an anti-rotation cylinder, cylinder rotation can be prevented, ensuring the consistency and accuracy of the clamping force, which helps reduce edge chipping during processing and improves the quality of the processed product. Simultaneously, it reduces downtime required for cylinder maintenance and adjustment, thereby increasing processing efficiency.

[0040] During the cutting and processing of silicon rods, the anti-rotation cylinder can also maintain the consistency of the direction and magnitude of the clamping force of the different pressure blocks 4 of the anti-chipping device, preventing unnecessary displacement of the edge skin 14 or silicon rod 13 under pressure. The use of the anti-rotation cylinder ensures that the clamping force of the pressure block 4 is always perpendicular to the surface of the silicon rod 13 and the edge skin 14. When the telescopic cylinder 3 is actuated, its telescopic end will only move along a predetermined straight line and will not rotate. This ensures that when the pressure block 4 applies pressure to the silicon rod and the edge skin, the pressure direction is always along a straight line, avoiding changes in the direction and magnitude of the clamping force caused by cylinder rotation, reducing possible processing errors and material damage, and improving the accuracy and stability of the pressure block 4 during the clamping process.

[0041] In one embodiment, a cylinder seat 6 is mounted on the end of the mounting arm 2 away from the mounting bracket 1, and a telescopic cylinder 3 is mounted on the cylinder seat 6.

[0042] In this embodiment, by installing a cylinder seat 6 at the end of the mounting arm 2 away from the mounting frame 1 and fixing the telescopic cylinder 3 on the cylinder seat 6, the installation stability of the telescopic cylinder 3 can be enhanced, ensuring the accuracy and reliability of the cylinder action, thereby improving the overall performance and processing precision of the anti-chipping device.

[0043] Furthermore, by setting the cylinder seat 6 on the mounting arm 2, the structure of the mounting arm 2 is made simpler and the processing cost is lower. Only a structure that facilitates the installation of the cylinder seat 6 needs to be designed, without having to consider the installation and mating structure with the telescopic cylinder 3.

[0044] In this embodiment, a rectangular mounting block is provided at one end of the mounting frame 1 on the mounting arm 2. The rectangular mounting block has a through hole, through which the telescopic cylinder 3 passes. The cylinder seat 6 is mounted on the rectangular mounting block and forms a stable and reliable connection with the rectangular mounting block by means of bolts or welding, so as to ensure the stability and reliability of the mounting structure of the cylinder seat 6 on the mounting arm 2. After the telescopic cylinder 3 passes through the through hole, it is mounted on the cylinder seat 6, which makes the installation and fixing of the telescopic cylinder 3 on the mounting arm 2 simple and convenient.

[0045] In one embodiment, the telescopic cylinder 3 is provided with a protective cover 7 on its telescopic end. The first end of the protective cover 7 is mounted on the cylinder seat 6, and the second end is mounted on the pressure block 4. The protective cover 7 can extend and retract according to the movement of the pressure block 4.

[0046] The telescopic cylinder 3 is equipped with a protective cover 7 on its telescopic end, which protects the telescopic cylinder 3 from the influence of the external environment and ensures that the telescopic rod of the telescopic cylinder 3 is not contaminated or damaged during the movement of the pressure block 4. The first end of the protective cover 7 is installed on the cylinder seat 6, and the second end is installed on the pressure block 4. It can extend and retract according to the movement of the pressure block 4, thereby maintaining the protective state of the telescopic cylinder when the pressure block moves. This does not affect the normal operation of the pressure block 4, and effectively isolates moisture, dust, cutting fluid, etc. in the working environment, preventing them from entering the cylinder and affecting the normal operation and service life of the cylinder.

[0047] The protective cover 7 can be a bellows-style protective cover, a spiral protective cover, or a multi-section protective cover, etc.

[0048] Accordion-style protective covers are typically made of multiple layers of elastic materials such as rubber, polyurethane, or special corrosion-resistant fabrics. They are shaped like accordions and can ensure that the protective cover can expand and contract evenly when the pressure block 4 moves.

[0049] A spiral protective cover forms a spiral-shaped protective layer around the telescopic end of the telescopic cylinder 3. This protective cover can also unfold or roll up according to the telescopic movement of the cylinder, while providing protection.

[0050] A multi-section protective cover is a type of protective cover composed of multiple retractable segments, each connected by hinges or elastic materials to form a retractable protective shell. The multi-section protective cover provides strong protection within the range of motion of the pressure block 4, while also accommodating significant retractable movements.

[0051] In one embodiment, the protective cover 7 is sealed to both the cylinder seat 6 and the pressure block 4.

[0052] The protective cover 7 can be glued to the cylinder seat 6 and the pressure block 4 at its end for sealing, or a hollow screw can be provided at the end of the protective cover 7, and the hollow screw can be screwed into the threaded structure in the annular groove on the cylinder seat 6 and the pressure block 4 to achieve a sealing fit.

[0053] In one embodiment, the pressure block 4 further includes two protrusions 8 spaced apart, one of which forms a silicon rod pressing area and the other protrusion 8 forms an edge pressing area.

[0054] By setting independent silicon rod clamping areas and edge clamping areas on the clamping block 4, it can be ensured that different parts of the clamping block apply appropriate pressure to the silicon rod 13 and edge 14 respectively during the clamping process, reducing material damage caused by uneven clamping force or improper clamping location, thereby improving processing quality.

[0055] The design of the protrusion 8 reduces the contact area between the pressure block 4 and the silicon rod 13 and the edge skin 14, so that the clamping force can be concentrated in a smaller area, thereby producing a more concentrated pressure effect.

[0056] In one embodiment, both the silicon rod pressing area and the edge pressing area are provided with flexible pads 9.

[0057] The use of flexible pad 9 avoids direct contact between rigid materials and silicon rod 13 and edge skin 14, reducing surface scratches or damage caused by hard contact during clamping, protecting the integrity of the silicon rod and edge skin, and thus improving the quality of the finished product. Flexible pad 9 can adapt to the surface structure of the silicon rod and edge skin, allowing the clamping force to be distributed more evenly on the contact surface, thereby preventing excessive local stress and avoiding cracks or deformation caused by excessive clamping on the silicon rod 13 or edge skin 14, ensuring material stability during processing. Flexible pad 9 deforms to a certain extent under pressure, increasing the actual contact area with the contact surface, improving the tightness of clamping, and making the clamping block 4 more adaptable to the clamping of the silicon rod 13 and edge skin 14, resulting in higher clamping stability.

[0058] During processing, the equipment may vibrate. The flexible pad 9 can absorb and buffer these vibrations, reducing their impact on the clamping effect and maintaining the stability of the contact between the pressure block 4 and the silicon rod 13 and edge skin 14, which is beneficial for improving processing accuracy. In the repeated clamping and releasing operations, contact between the hard material and the silicon rod and edge skin may accelerate material wear. Using the flexible pad 9 can reduce this wear, extend the service life of the pressure block 4, and reduce maintenance costs and downtime.

[0059] The flexible pad 9 can be made of materials such as polyurethane, silicone, and rubber.

[0060] In one embodiment, the flexible pad 9 has pressing protrusions 10 at both ends of its length on the side opposite to the pressure block 4, and a material reduction groove 11 is formed between the pressing protrusions 10 at both ends of the flexible pad 9.

[0061] The design of the clamping protrusions 10 ensures that when the flexible pad 9 contacts the silicon rod 13 and the edge skin 14, the force is concentrated on a specific area rather than the entire surface, making the clamping force more precise. This reduces material damage caused by uneven or excessive clamping, especially for fragile materials such as silicon rods, preventing surface cracks and internal stress. The design of the material reduction groove 11 reduces the amount of material used in the flexible pad 9 along its length, thereby reducing material costs. Since the clamping protrusions 10 are located at both ends of the pressure block 4 along its length, and the material reduction groove 11 is located between the clamping protrusions 10 at both ends, lightweighting and cost optimization can be achieved by reducing material in unnecessary areas without affecting the clamping effect.

[0062] The combined design of the clamping protrusion 10 and the material reduction groove 11 optimizes the contact between the flexible pad 9 and the silicon rod 13 and the edge skin 14. The clamping protrusion 10 ensures clamping effect at critical locations on the silicon rod 13 and the edge skin 14, while the material reduction groove 11 avoids excessive contact and clamping at non-critical locations, preventing unnecessary surface wear or damage.

[0063] In one embodiment, the pressing protrusion 10 adopts a rectangular structure and the pressing surface is a plane, which can ensure the contact area between the pressing protrusion 10 and the silicon rod 13 and the edge skin 14, and ensure the pressing effect on the silicon rod 13 and the edge skin 14.

[0064] In one embodiment, the pressing protrusion 10 may also be a cylindrical structure.

[0065] In one embodiment, the two mounting arms 2 located on opposite sides of the mounting frame 1 extend laterally toward the same side of the mounting frame 1, the two mounting arms 2 are arranged opposite each other, and a clearance space 12 is formed between the two mounting arms 2 arranged opposite each other.

[0066] By setting the mounting arms 2 opposite each other and creating a clearance space, the space of the mounting bracket 1 can be utilized more effectively, avoiding direct collisions or interference between the mounting arms and providing more possibilities for the arrangement of internal components.

[0067] In one embodiment, the mounting arms 2 on the two opposite sides of the mounting bracket 1 are mirror-symmetrical structures and are located at both ends of the silicon rod 13 in the diameter direction, respectively. This can provide a more balanced clamping force at both ends of the silicon rod 13 in the diameter direction during clamping, thereby improving the stability of the clamping structure and enhancing the anti-chipping effect.

[0068] In one embodiment, the telescopic cylinder 3 is provided with a cylinder cover 5, which can effectively protect the telescopic cylinder 3.

[0069] In one embodiment, the mounting bracket 1 is a suspension structure and the mounting arm 2 is a cantilever structure, so that the entire anti-splitting structure can form a suspension structure, which can press and fix the silicon rod 13 and the edge skin 14 from one side above the silicon rod. The structure is simple, easy to operate, and has lower cost and is easier to implement.

[0070] According to an embodiment of the present invention, the squaring machine includes an anti-chipping device, which is the anti-chipping device described above.

[0071] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0074] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-fraying device, characterized in that, The utility model relates to a kind of anti-edge collapse device, including: Mounting frame (1); Mounting arm (2) is arranged in the two opposite sides of the mounting frame (1); Telescopic cylinder (3) is arranged on the mounting arm (2); Press block (4) is arranged in the telescopic end of the telescopic cylinder (3), and the pressing surface of the press block (4) has silicon rod pressing area and edge skin pressing area; Pressure regulating valve is connected with the telescopic cylinder (3), and adjusts the output force of the telescopic cylinder (3).

2. The device of claim 1, wherein The telescopic cylinder (3) is anti-rotation cylinder.

3. The device of claim 1, wherein, The mounting arm (2) is provided with cylinder seat (6) at the end away from the mounting frame (1), and the telescopic cylinder (3) is installed on the cylinder seat (6).

4. The device of claim 3, wherein The telescopic end cover of the telescopic cylinder (3) is provided with protective cover (7), the first end of the protective cover (7) is installed on the cylinder seat (6), the second end is installed on the press block (4), and the protective cover (7) can be telescopic according to the movement of the press block (4).

5. The device of claim 4, wherein, The protective cover (7) is sealed with the cylinder seat (6) and the press block (4).

6. The device of claim 1, wherein The press block (4) further includes two protrusions (8) arranged at intervals, one of the protrusions (8) forms the silicon rod pressing area, and the other protrusion (8) forms the edge skin pressing area.

7. The anti-edge collapse device of any one of claims 1 to 6, wherein, The silicon rod pressing area and the edge skin pressing area are provided with flexible pad (9).

8. The device of claim 7, wherein, The flexible pad (9) is provided with pressing convex part (10) at the length direction of the side away from the press block (4) both ends, and material reduction groove (11) is formed between the pressing convex part (10) at both ends of the flexible pad (9).

9. The anti-edge collapse device of any one of claims 1 to 6, wherein, The mounting arm (2) located at the two opposite sides of the mounting frame (1) extends along the lateral direction of the mounting frame (1) to the same side of the mounting frame (1), and the two mounting arms (2) are oppositely arranged, and the avoiding space (12) is formed between the two oppositely arranged mounting arms (2).

10. A square root machine comprising an anti-edge collapse device, characterized in that, The anti-edge collapse device is any one of claims 1-9.

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