Swing sawing machine

Abstract

A swing sawing machine is applied to sawing monocrystalline silicon crystals and comprises a swing clamping assembly and a fret saw assembly. The swing clamping assembly comprises a first driving part and a clamping part, the first driving part is connected with the clamping part, the first driving part is used for driving the clamping part to rotate, and the clamping part is used for clamping a crystal; the fret saw assembly comprises a second driving part and a cutting wheel train, the second driving part is connected with the cutting wheel train, and the second driving part is used for controlling the cutting wheel train to be close to or away from the clamping part; the cutting wheel train comprises a mounting panel, at least one driving wheel, at least one tensioning wheel and a cutting line, the driving wheel and the tensioning wheel are movably connected with the mounting panel, and the cutting line is wound between the driving wheel and the tensioning wheel. According to the utility model, the contact part and the stress point of the cutting wheel train and the crystal are continuously changed in the saw cutting process, so that the cutting length of each unit length cutting line is shortened, and the cutting resistance is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of crystal cutting, in particular to a swing saw cutting machine. BACKGROUND

[0002] In the existing material cutting process, for relatively large materials or relatively hard materials, a flat cutting method is generally used for cutting. However, this flat cutting method has many drawbacks. When cutting such materials, the cutting process is relatively laborious, requiring a large amount of energy and time. Moreover, if the cutting process is accelerated in order to increase the cutting speed, the surface quality of the cut material is often poor, with problems such as surface roughness, scratches, deformation, and the like, which seriously affect the subsequent processing and use performance of the product. This not only reduces production efficiency, but also increases production costs, as additional finishing, trimming, and other post-processing procedures are required for the product with poor surface quality. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to provide a swing saw cutting machine that solves the problems of low cutting efficiency and poor quality for crystal cutting.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A swing saw cutting machine is applied to sawing single crystal silicon crystals, comprising a swing clamping assembly and a wire saw assembly.

[0006] The swing clamping assembly comprises a first driving part and a clamping part, the first driving part is connected with the clamping part, the first driving part is used for driving the clamping part to perform rotary motion, and the clamping part is used for clamping a crystal.

[0007] The wire saw assembly comprises a second driving part and a cutting wheel system, the second driving part is connected with the cutting wheel system, and the second driving part is used for controlling the cutting wheel system to approach or move away from the clamping part.

[0008] The cutting wheel system comprises a mounting panel, at least one driving wheel, at least one tensioning wheel, and a cutting wire, the driving wheel and the tensioning wheel are respectively movably connected with the mounting panel, and the cutting wire is wound between the driving wheel and the tensioning wheel.

[0009] In some embodiments, the tensioning wheel comprises a guide rail, a sliding block, a tensioning spring, and a wheel body.

[0010] The guide rail is connected with the mounting panel, the sliding block is slidably connected with the guide rail, and the sliding block is connected with the wheel body.

[0011] One end of the tensioning spring is fixed with the mounting panel, the other end is fixedly connected with the sliding block, and the wheel body is fixedly connected with the sliding block.

[0012] In some embodiments, the guide rails are at least two, and are arranged on both sides of the wheel bodies; the number of the sliding blocks matches the number of the guide rails, and each sliding block is connected with the tension spring.

[0013] In some embodiments, the jigsaw assembly further comprises a power arm and an auxiliary arm, which are arranged on both sides of the cutting wheel system and are in sliding connection with both sides of the cutting wheel system, respectively; the second driving part is used to control the movement of the cutting wheel system along the length direction of the power arm.

[0014] In some embodiments, a conveying assembly is further included, which is in sliding connection with the swing clamping assembly, and is used to control the swing clamping assembly to approach or move away from the jigsaw assembly.

[0015] In some embodiments, a blowing assembly is further included, which comprises at least one air nozzle, and the opening of the air nozzle at least partially faces the conveying path of the conveying assembly.

[0016] In some embodiments, the cutting wheel system further comprises a driven wheel, which is in rotational connection with the mounting panel; the number of the driving wheel, the driven wheel and the tension wheel is one, and the driving wheel, the driven wheel and the tension wheel are in triangular distribution.

[0017] In some embodiments, the cutting wheel system further comprises a driven wheel, which is in rotational connection with the mounting panel; the number of the driving wheel and the driven wheel is one, the number of the tension wheel is two, and the driving wheel, the driven wheel and the tension wheel are in quadrilateral distribution.

[0018] In some embodiments, the cutting wheel system further comprises a baffle, which is arranged at a preset distance from the mounting panel, and the baffle and the mounting panel enclose the accommodation space of the driving wheel, the driven wheel and / or the tension wheel.

[0019] In some embodiments, the driving wheel comprises a third driving part and a wheel body, the third driving part is connected with the wheel body and is used to drive the rotation of the wheel body.

[0020] The utility model discloses a beneficial effect lies in: provide a swing saw cutting machine, drive the clamping part of clamping crystal to carry out the rotary motion, make the crystal produce regular clockwise and counterclockwise swing, thereby make the contact part and stress point of cutting wheel system and crystal change constantly in the saw cutting process, make the length of each unit length cutting line participate in cutting shorten, thereby reduced cutting resistance, simultaneously, because the workpiece changes position constantly in the cutting process, make cutting point can move fast, avoided long -time cutting in the same position, and further realized the promotion of overall cutting efficiency, in addition, compared with traditional flat cutting mode, swing cutting changes cutting position constantly in the cutting process, avoided the local overheating and stress concentration caused by long -time cutting in the same position, thereby effectively improved the material surface quality after cutting. The surface after cutting is more level, smooth, reduces the generation of surface defect, reduces the workload and cost of subsequent surface treatment.

[0021] In the aspect of chip removal and cooling, in the swing cutting process, the cutting chip can be quickly removed along with the swing of the workpiece, avoiding the accumulation of the cutting chip in the cutting area and reducing the interference of the cutting chip on the cutting process. At the same time, since the workpiece constantly changes the cutting position, the cutting area can be cooled in time, which is beneficial to cooling. This not only improves the service life of the cutting tool, but also further ensures the stability of the cutting quality.

[0022] At the same time, the cutting wheel system is composed of a driving wheel, a tensioning wheel and a cutting wire. In the rotating process of the clamping part, the tension fluctuation caused by the friction force of the cutting wire can be absorbed by the tensioning wheel, ensuring the stability of the swing cutting process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of a swing saw cutting machine in the utility model embodiment;

[0024] Figure 2 It is a schematic view of the clamping part of a swing saw cutting machine in the utility model embodiment;

[0025] Figure 3 It is a schematic view of a wire saw assembly of a swing saw cutting machine in the utility model embodiment;

[0026] Figure 4 It is a schematic view of a cutting wheel system of a swing saw cutting machine in the utility model embodiment Figure 1 ;

[0027] Figure 5 It is a schematic view of a cutting wheel system of a swing saw cutting machine in the utility model embodiment Figure 2 ;

[0028] Figure 6 It is an internal structure schematic view of a tensioning wheel of a swing saw cutting machine in the utility model embodiment;

[0029] Figure 7 Figure 1 is a perspective view of a tensioning wheel of a swing saw cutting machine according to an embodiment of the present application;

[0030] Label explanation:

[0031] 1, swing clamping assembly; 11, first driving part; 12, clamping part; 2, wire saw assembly; 21, second driving part; 22, mounting panel; 23, driving wheel; 24, tensioning wheel; 241, guide rail; 242, sliding block; 243, tensioning spring; 244, wheel body; 25, cutting wire; 26, power arm; 27, auxiliary arm; 28, driven wheel; 29, baffle; 3, conveying assembly; 4, blowing assembly; 41, air nozzle. DETAILED DESCRIPTION

[0032] In order to explain the technical content, the purpose and the effect of the present application in detail, the following will be explained in combination with the embodiments and the drawings.

[0033] Please refer to Figures 1 to 3 A swing saw cutting machine is applied to saw cutting single crystal silicon, which comprises a swing clamping assembly 1 and a wire saw assembly 2.

[0034] The swing clamping assembly 1 comprises a first driving part 11 and a clamping part 12, the first driving part 11 is connected with the clamping part 12, the first driving part 11 is used for driving the clamping part 12 to rotate, and the clamping part 12 is used for clamping the crystal.

[0035] The wire saw assembly 2 comprises a second driving part 21 and a cutting wheel system, the second driving part 21 is connected with the cutting wheel system, and the second driving part 21 is used for controlling the cutting wheel system to approach or move away from the clamping part 12.

[0036] The cutting wheel system comprises a mounting panel 22, at least one driving wheel 23, at least one tensioning wheel 24 and a cutting wire 25, the driving wheel 23 and the tensioning wheel 24 are movably connected with the mounting panel 22 respectively, and the cutting wire 25 is arranged between the driving wheel 23 and the tensioning wheel 24.

[0037] The utility model discloses a beneficial effect in the foregoing description lies in: provide a swing saw cutting machine, drive the clamping part 12 of clamping crystal and make crystal produce regular clockwise and counterclockwise swing, thereby make cutting wheel system and the contact part and stress point of crystal change constantly in saw cutting process, make the length of each unit length cutting line 25 shorten that participates in cutting, thereby reduced cutting resistance, simultaneously, because workpiece changes position constantly in cutting process, make cutting point can move fast, avoided long -time cutting in the same position, and further realized the promotion of overall cutting efficiency, in addition, compared with traditional flat cutting mode, swing cutting changes cutting position constantly in cutting process, avoided the local overheating and stress concentration caused by long -time cutting in the same position, thereby effectively improved the material surface quality after cutting. The surface after cutting is more even, smooth, reduces the generation of surface defect, reduces the workload and cost of subsequent surface treatment.

[0038] In the aspect of chip removal and cooling, in the swing cutting process, the cutting chip can be quickly removed with the swing of the workpiece, avoiding the accumulation of cutting chips in the cutting area and reducing the interference of cutting chips on the cutting process. At the same time, since the workpiece constantly changes the cutting position, the cutting area can be cooled in time, which is beneficial to cooling. This not only improves the service life of the tool, but also further ensures the stability of the cutting quality.

[0039] At the same time, the cutting wheel system is composed of a driving wheel 23, a tensioning wheel 24 and a cutting wire 25. During the rotation of the clamping part 12, the tension fluctuation caused by the friction of the cutting wire 25 can be absorbed by the tensioning wheel 24, ensuring the stability of the swing cutting process.

[0040] Preferably, the clamping part 12 comprises a rotating disc, a fixed clamp and a supporting wheel; the axis of the rotating disc is arranged in parallel to the first direction, the driving part is connected with the rotating disc and is used to drive the rotating disc to rotate; the fixed clamp is symmetrically arranged on both sides of the circumferential surface of the rotating disc and extends to the first direction, and at least part of the fixed clamp is used to clamp the crystal; the supporting wheel abuts against the circumferential surface of the rotating disc. The design of the clamping part 12 includes the combination of the rotating disc, the fixed clamp and the supporting wheel, which enhances the stability of the clamping part 12 during the cutting process. The arrangement of the rotating disc enables the clamping part 12 to rotate in the first direction, so that the cutting path can be optimized by accurately controlling the rotation angle during the cutting process. The symmetrical installation of the fixed clamp and the rotating disc enables the crystal to be uniformly and stably clamped during clamping, avoiding the risk of damage to the crystal caused by uneven clamping. The arrangement of the supporting wheel helps to reduce the friction of the rotating disc, reduce the energy consumption and wear during the cutting process, and ensure the stability of the rotation of the clamping part 12, thereby improving the cutting efficiency and surface quality.

[0041] Please refer to Figures 6 to 7In some embodiments, the tensioning wheel 24 comprises a guide rail 241, a sliding block 242, a tensioning spring 243 and a wheel body 244;

[0042] The guide rail 241 is connected with the mounting panel 22, the sliding block 242 is in sliding connection with the guide rail 241, and the sliding block 242 is connected with the wheel body 244.

[0043] One end of the tensioning spring 243 is fixed with the mounting panel 22, and the other end is fixedly connected with the sliding block 242, and the wheel body 244 is fixedly connected with the sliding block 242.

[0044] From the above description, it can be known that the structure design of the tensioning wheel 24 is optimized, so that it has the ability to adjust the tension. Through the combination of the guide rail 241, the sliding block 242 and the tensioning spring 243, the tensioning wheel 24 can automatically adjust according to the actual stress condition of the cutting line 25, so as to ensure that the cutting line 25 is always in the ideal tension range during the cutting process.

[0045] In some embodiments, the guide rail 241 comprises at least two guide rails, and the guide rails 241 are respectively arranged on both sides of the wheel body 244; the number of the sliding blocks 242 matches the number of the guide rails 241, and each sliding block 242 is connected with the tensioning spring 243.

[0046] From the above description, it can be known that at least two guide rails 241 are arranged in sliding connection with the wheel body 244, which avoids the uneven force of the wheel body 244 during the tension adjustment process to produce unexpected shaking, and improves the stability of the tensioning wheel 24.

[0047] Please refer to Figure 3 In some embodiments, the wire saw assembly 2 further comprises a power arm 26 and an auxiliary arm 27, the power arm 26 and the auxiliary arm 27 are respectively arranged on both sides of the cutting wheel system and are in sliding connection with both sides of the cutting wheel system; the second driving part 21 is used to control the cutting wheel system to move along the length direction of the power arm 26.

[0048] From the above description, it can be seen that, due to the need to ensure high-precision machining and installation of the grooves of the two upright guide rails 241, the machining process of the traditional gantry structure is complex and prone to errors. At the same time, due to the involvement of machining of two uprights, the control of machining precision is difficult, and it is difficult to ensure that the two upright guide rail 241 grooves are accurate and consistent in height, parallelism, perpendicularity, etc. In order to solve the above problems, in the above embodiment, the power arm 26 is used for transmission, and the auxiliary arm 27 is only used for driving, avoiding the problem that the traditional gantry needs to be set with two columns with high precision control. In this example, only the power arm 26 needs to be controlled with high precision, and a V-shaped guide rail 241 is provided on the auxiliary arm 27. The V-shaped groove surface can cooperate with the matching roller or sliding block 242 to provide lateral support and guide function, thereby further improving the cutting precision and stability.

[0049] Please refer to Figure 1 In some embodiments, further comprising a conveying assembly 3, the conveying assembly 3 is in sliding connection with the swinging clamping assembly 1, and the conveying assembly 3 is used to control the swinging clamping assembly 1 to approach or move away from the wire saw assembly 2.

[0050] From the above description, it can be seen that by setting the conveying assembly 3, it is convenient to transport the cut or uncut crystal to the outside of the cutting area, and it is convenient to load and unload the device.

[0051] Please refer to Figure 1 Preferably, further comprising a blowing assembly 4, the blowing assembly 4 at least includes a gas nozzle 41, and the gas nozzle 41 is at least partially open towards the conveying path of the conveying assembly 3.

[0052] From the above description, it can be seen that, since dust will exist during the wire saw cutting process, the blowing assembly 4 is arranged on the conveying path of the conveying assembly 3, which effectively removes the accumulated dust, and since the blowing assembly 4 is not arranged at the swinging clamping assembly 1, it effectively avoids the dust falling into the important structure inside.

[0053] Please refer to Figure 4 In some embodiments, the cutting wheel system further comprises a driven wheel 28, the driven wheel 28 is in rotational connection with the mounting panel 22; the number of the driving wheel 23, the driven wheel 28 and the tensioning wheel 24 is one, and the driving wheel 23, the driven wheel 28 and the tensioning wheel 24 are distributed in a triangular shape.

[0054] From the above description, it can be seen that, by adopting the structure of three-wheeled triangular arrangement, the present application improves the tension control ability of the cutting wire 25 and enhances the overall stability. In this arrangement, the cutting wire 25 can maintain a relatively uniform tension distribution during operation, reducing the cutting error caused by uneven unilateral stress.

[0055] Please refer toFigure 5 In some embodiments, the cutting wheel system further comprises a driven wheel 28 rotationally connected with the mounting panel 22; the number of the driving wheel 23 and the driven wheel 28 is one, the number of the tensioning wheels 24 is two, and the driving wheel 23, the driven wheel 28 and the tensioning wheels 24 are in quadrilateral distribution.

[0056] From the above description, in order to solve the problem that it is difficult to judge the material cutting through due to the floating position of the guide wheel, the preset tensioning forces of the two tensioning wheels 24 are differentiated, for example, the tensioning force of one tensioning wheel 24 is set to 8.5 kgf, and the tensioning force of the other tensioning wheel 24 is set to 8 kgf, and the displacement information of the initial positions of the two tensioning wheels 24 is obtained by using the displacement sensor, and in the cutting through judgment process, the displacement information change rate is calculated according to the above method to determine whether the cutting through condition is met.

[0057] Please refer to Figure 1 In some embodiments, the cutting wheel system further comprises a baffle 29, which is arranged at a preset distance from the mounting panel 22, and the baffle 29 and the mounting panel 22 enclose the accommodation space of the driving wheel 23, the driven wheel 28 and / or the tensioning wheel 24.

[0058] From the above description, the baffle 29 and the mounting panel 22 are arranged to jointly enclose the accommodation space of the driving wheel 23, the driven wheel 28 and / or the tensioning wheel 24, so as to avoid the interference of external impurities with the rotation of the wheel body 244; preferably, a baffle 29 is arranged at the position of each of the driving wheel 23, the driven wheel 28 and the tensioning wheel 24 to protect the operation of the wheel body 244.

[0059] In some embodiments, the driving wheel 23 comprises a third driving part and a wheel body 244, and the third driving part is connected with the wheel body 244 and used to drive the rotation of the wheel body 244.

[0060] From the above description, the third driving part is arranged to control the rotation of the driving wheel 23, which serves as the power source of the cutting wheel system and can control the operation of the cutting wire 25 in real time.

[0061] In summary, the utility model provides a kind of swing saw cutting machine, optimize the mode of traditional wire saw cutting, improve cutting efficiency and cutting quality. The first driving part of swing clamping assembly drives clamping part to rotate, makes crystal produce regular swing of clockwise and counterclockwise in cutting process, avoids the problem of local overheating and stress concentration caused by cutting in the same position for a long time, to improve the flatness and smoothness of material surface, reduce subsequent processing cost. At the same time, the contact part of cutting wheel system and crystal changes constantly by swing movement, so that the cutting time of each unit length cutting line is shortened, the cutting resistance is reduced, and the cutting stability is improved. In addition, the position of workpiece changes constantly in swing process, so that chip is more easily removed, reduces dust accumulation in cutting area, is beneficial to cooling and heat dissipation, and improves tool life.

[0062] The cutting wheel system adopts the combination of driving wheel, tensioning wheel and cutting wire. By optimizing the structure of tensioning wheel, automatic tensioning adjustment is realized through the cooperation of guide rail, sliding block and tensioning spring, so that the cutting wire is always in the ideal tension range, and the cutting stability is ensured. In order to improve the precision, single-arm transmission is adopted for power arm, which avoids the high-precision installation problem caused by double-column gantry structure, and V-shaped guide rail is provided on auxiliary arm to provide lateral support and improve cutting precision. In addition, the addition of conveying assembly enables workpiece to enter and exit cutting area efficiently, improves production efficiency, and blowing assembly can remove dust in time to prevent pollution of key components.

[0063] Further, the cutting wheel system can adopt three-wheel triangle or four-wheel quadrilateral layout to enhance tension control and cutting stability. Among them, the quadrilateral layout improves cutting quality and accuracy by differentiating the tension of two tensioning wheels and combining displacement sensor for cutting penetration judgment. In addition, the added baffle can prevent impurities from interfering with the operation of the wheel body, improving the durability of the equipment. The driving wheel is powered by the third driving part, which can accurately control the operation of the cutting wire and realize efficient and stable swing cutting.

[0064] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent transformation or direct or indirect application in related technical field based on the content of the utility model specification and drawings is also included in the patent protection range of the utility model.

Claims

1. A swing sawing machine, used for sawing single-crystal silicon crystals, characterized in that: Includes a swing clamping assembly and a wire saw assembly; The swing clamping assembly includes a first driving part and a clamping part. The first driving part is connected to the clamping part. The first driving part is used to drive the clamping part to rotate. The clamping part is used to clamp the crystal. The wire saw assembly includes a second drive unit and a cutting wheel system. The second drive unit is connected to the cutting wheel system and is used to control the cutting wheel system to move closer to or away from the clamping part. The cutting wheel system includes a mounting panel, at least one drive wheel, at least one tension wheel, and a cutting line. The drive wheel and the tension wheel are movably connected to the mounting panel, and the cutting line is wound between the drive wheel and the tension wheel.

2. The oscillating sawing machine according to claim 1, characterized in that: The tensioning wheel includes a guide rail, a slider, a tensioning spring, and a wheel body; The guide rail is connected to the mounting panel, the slider is slidably connected to the guide rail, and the slider is connected to the wheel. One end of the tension spring is fixed to the mounting panel, and the other end is fixedly connected to the slider. The wheel is fixedly connected to the slider.

3. The oscillating sawing machine according to claim 2, characterized in that: The guide rails include at least two rails, which are respectively disposed on both sides of the wheel body; the number of sliders matches the number of guide rails, and each slider is connected to the tension spring.

4. The oscillating sawing machine according to claim 1, characterized in that: The wire saw assembly further includes a power arm and an auxiliary arm, the power arm and the auxiliary arm being respectively disposed on both sides of the cutting wheel system and slidably connected to both sides of the cutting wheel system; the second drive unit is used to control the cutting wheel system to move along the length direction of the power arm.

5. A oscillating sawing machine according to claim 1, characterized in that: It also includes a conveying component that is slidably connected to the oscillating clamping component, the conveying component being used to control the oscillating clamping component to move closer to or away from the wire saw component.

6. A oscillating sawing machine according to claim 5, characterized in that: It also includes a purging assembly, which includes at least one air nozzle with its opening at least partially facing the conveying path of the conveying assembly.

7. A oscillating sawing machine according to claim 1, characterized in that: The cutting wheel system also includes a driven wheel, which is rotatably connected to the mounting panel; the number of the driving wheel, the driven wheel, and the tensioning wheel is one each, and the driving wheel, the driven wheel, and the tensioning wheel are arranged in a triangular pattern.

8. A oscillating sawing machine according to claim 1, characterized in that: The cutting wheel system also includes a driven wheel, which is rotatably connected to the mounting panel; there is one driving wheel and one driven wheel, and two tensioning wheels, which are arranged in a quadrilateral shape.

9. A oscillating sawing machine according to any one of claims 7-8, characterized in that: The cutting wheel system also includes a baffle, which is set at a preset distance from the mounting panel. The baffle and the mounting panel together enclose a space for accommodating the driving wheel, the driven wheel, and / or the tensioning wheel.

10. A swing sawing machine according to any one of claims 1-7, characterized in that: The drive wheel includes a third drive unit and a wheel body. The third drive unit is connected to the wheel body and is used to drive the wheel body to rotate.

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