Width-adjustable cutting mechanism and cutting device

Abstract

The utility model provides a width-adjustable cutting mechanism and a cutting device, the width-adjustable cutting mechanism comprises two single-line double-blade cutting units, each single-line double-blade cutting unit comprises a cutting line, two cutting wheel sets and four guide wheel sets; the cutting lines are arranged in the line grooves of the two cutting wheel sets so that the cutting lines can form two rows of cutting line segments in the first direction in the cutting direction. The guide wheel set is movably arranged in the second direction, and the first direction and the second direction are staggered. The two ends of at least one row of cutting line segments are guided through guide wheel sets so that the distance between the cutting line segments can be adjusted. The two single-line double-blade cutting units are arranged in a staggered mode, and cutting line segments of the two single-line double-blade cutting units are projected into a # shape in the cutting direction. According to the technical scheme, by adjusting the distance between the cutting line segments, the distance between the cutting lines is accurately controlled, and different requirements of different brittle and hard materials for the distance between the cutting lines are met.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting brittle and hard materials, in particular to a cutting mechanism and a cutting device with adjustable width. Background Art

[0002] Squaring a monocrystalline silicon ingot involves cutting it into a square column, with the finished product consisting of four sides. The cutting mechanism, which is a width-adjustable cutting mechanism for the squared-off monocrystalline silicon ingot, currently requires two cutting units, each of which cuts one side of the ingot. This results in a complex overall structure, with each unit requiring a separate cutting line, resulting in high costs. Furthermore, when replacing the cutting line in the cutting mechanism, two cutting lines must be replaced, resulting in significant losses.

[0003] In addition, during the squaring operation, the cutting mechanism only cuts the two sides of the single crystal silicon rod at a time. Cutting a single single crystal silicon rod into shape requires the cutting mechanism to cut twice in succession, which is inefficient. In addition, during the squaring of the single crystal silicon rod by the existing cutting mechanism, the spacing of the cutting lines in the cutting mechanism is fixed, so the side length of the single crystal silicon rod after squaring is fixed. However, single crystal silicon rods of different specifications have different requirements for the spacing of the cutting lines. The existing method mainly adjusts the side length of the single crystal silicon rod through multiple cuts, which increases the number of cutting interruptions and reduces the cutting speed. At the same time, a large amount of waste (single crystal silicon rod powder) is generated, which reduces material utilization and increases production costs. Utility Model Content

[0004] Therefore, it is necessary to provide a cutting mechanism and a cutting device with adjustable width to solve the problems of high consumables and low efficiency of the cutting mechanism in the prior art.

[0005] To achieve the above purpose, the utility model provides a cutting mechanism with adjustable width, which includes

[0006] Two single-line double-blade cutting units, each of which includes a cutting line, two sets of cutting wheels and a guide wheel set;

[0007] The two groups of cutting wheel assemblies are arranged in a manner that the line grooves of the cutting wheels are opposite to each other;

[0008] The cutting line is annular and arranged in the line grooves of the cutting wheels of the two cutting wheel groups so that the cutting line forms two rows of cutting line segments in the first direction along the cutting direction;

[0009] The guide wheel group is movably arranged along the second direction, and the first direction and the second direction are staggered; both ends of at least one row of cutting segments are guided by the guide wheel group to adjust the spacing between the cutting segments;

[0010] The two single-line double-blade cutting units are staggered, and the cutting line segments of the two single-line double-blade cutting units are projected into a well shape along the cutting direction.

[0011] Furthermore, both ends of the two rows of cutting segments are guided by guide wheel groups respectively, and the two guide wheel groups at the corresponding ends are relatively movable along the second direction to adjust the spacing between the cutting segments.

[0012] Furthermore, the first direction and the second direction are perpendicular.

[0013] Furthermore, the cutting line segments of the two single-line double-blade cutting units are spaced apart along the cutting direction.

[0014] Furthermore, the two rows of cutting line segments of the single-line double-blade cutting unit are arranged in parallel.

[0015] Furthermore, the cutting wheel set includes cutting wheels, and the diameters and numbers of the cutting wheels of the two cutting wheel sets of each single-wire double-blade cutting unit are consistent.

[0016] Furthermore, each of the guide wheel groups includes a first guide wheel, and both ends of at least one row of cutting line segments are guided by the corresponding first guide wheel to adjust the spacing between the cutting line segments.

[0017] Furthermore, a wheel surface of the first guide wheel is parallel to a wheel surface of the cutting wheel of the cutting wheel assembly.

[0018] Furthermore, each of the guide wheel groups also includes a second guide wheel, and at least two ends of a row of cutting segments are guided by the first guide wheel and the second guide wheel; the second guide wheel bends the cutting segments in the cutting direction, and the wheel surface of the cutting wheel of the cutting wheel group is inclined toward the tangent direction of the bending of the cutting segments.

[0019] A cutting device comprising a width-adjustable cutting mechanism, a driving mechanism, and a clamping mechanism;

[0020] The clamping mechanism is used to clamp the single crystal silicon rod, and the clamping mechanism is located in the middle of the cutting line segments of the two single-line double-blade cutting units projected into a well shape along the cutting direction; the driving mechanism is used to drive the width-adjustable cutting mechanism to move along the clamping mechanism to cut the single crystal silicon rod.

[0021] Different from the existing technology, each single-line double-blade cutting unit of the above technical solution includes a cutting line, two sets of cutting wheel groups and four sets of guide wheel groups. The cutting line is connected end to end into a closed loop and arranged in the wire groove of the two sets of cutting wheel groups to form two rows of cutting line segments; the two single-line double-blade cutting units are staggered, one single-line double-blade cutting unit is used to cut the two back-to-back sides of the brittle and hard material, and the other single-line double-blade cutting unit is used to cut the other back-to-back sides of the brittle and hard material, so that the two single-line double-blade cutting units cut the four sides of the brittle and hard material, which improves the utilization rate of a single cutting line, is conducive to reducing costs and reducing losses; and only a single operation is required to complete the square cutting of the cut brittle and hard material, and the square cutting efficiency is high; then the cutting line segment is guided by the movably set guide wheel group to adjust the spacing between the cutting line segments. By precisely controlling the spacing between the two rows of cutting line segments, different brittle and hard materials have different requirements for the spacing of the cutting line segments. Reasonable adjustment can make the cutting process smoother and avoid cutting interruption or speed reduction due to improper spacing; at the same time, it minimizes waste generation, improves material utilization, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a width-adjustable cutting mechanism according to an embodiment;

[0023] Figure 2 for Figure 1 A top view of

[0024] Figure 3 for Figure 1 Front view of

[0025] Figure 4 A schematic diagram of the three-dimensional structure of a width-adjustable cutting mechanism according to an embodiment;

[0026] Figure 5 A schematic diagram of the three-dimensional structure of a width-adjustable cutting mechanism according to an embodiment;

[0027] Figure 6 for Figure 5 Front view of .

[0028] Description of reference numerals:

[0029] 10. Cutting wheel set;

[0030] 101, cutting wheel;

[0031] 1011. wheel surface of the cutting wheel; 1012. wire groove of the cutting wheel;

[0032] 20. Guide wheel assembly;

[0033] 201, first guide wheel;

[0034] 2011. Wheel surface of the first guide wheel; 2012. Circumferential surface of the first guide wheel;

[0035] 202, second guide wheel;

[0036] 2021. Wheel surface of the second guide wheel; 2022. Circumferential surface of the second guide wheel;

[0037] 30. Cutting line segments;

[0038] 40. First chute;

[0039] 50. First slide rail;

[0040] 60. Panel;

[0041] x, first direction;

[0042] y, second direction;

[0043] z, cutting direction;

[0044] a. Cutting direction projection surface. DETAILED DESCRIPTION

[0045] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0046] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0047] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0048] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0049] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0050] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0051] Consistent with the understanding in the Patent Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups" and "multiple times," unless otherwise clearly and specifically limited.

[0052] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0053] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0054] See also Figures 1-6 As shown, the utility model provides a cutting mechanism with adjustable width for cutting brittle and hard materials. It mainly includes two single-line double-blade cutting units, each of which includes a cutting line and two sets of cutting wheel groups 10 and a guide wheel group 20. The cutting line is connected end to end into a closed loop and arranged in the line grooves of the two sets of cutting wheel groups 10 to form two rows of cutting line segments 30; the two single-line double-blade cutting units are staggered, one single-line double-blade cutting unit is used to cut the two back-to-back sides of the brittle and hard material, and the other single-line double-blade cutting unit is used to cut the other two back-to-back sides of the brittle and hard material, so that the two single-line double-blade cutting units can cut the four sides of the brittle and hard material, thereby improving the utilization rate of the single cutting line and facilitating Reduce costs and losses; and only a single operation is required to complete the squaring of brittle and hard materials with high squaring efficiency; the cutting line segments 30 are guided by the movable guide wheel group 20 to adjust the spacing between the cutting line segments 30, and the spacing between the two rows of cutting line segments 30 is precisely controlled to meet the different requirements of different brittle and hard materials for the spacing of the cutting line segments 30. Reasonable adjustment can make the cutting process smoother and avoid cutting interruptions or speed reductions caused by improper spacing; at the same time, it minimizes waste generation, improves material utilization, and reduces production costs.

[0055] The aforementioned width-adjustable cutting mechanism is used for cutting brittle and hard materials. These materials can include semiconductor materials such as metals, ferrites, and ceramics. The mechanism maintains a smooth cut surface, minimizes material loss, and prevents crystal deformation or defects. These materials can include gemstones and precious materials such as single crystal silicon, sapphire, silicon carbide, optical crystals, magnetic materials, and most non-ferrous metals. Other materials include stone and concrete. The following uses a single crystal silicon rod as an example for illustration.

[0056] See also Figures 1-6 As shown, the following is an embodiment of a width-adjustable cutting mechanism provided by the present invention, which includes

[0057] Two single-line double-blade cutting units, each of which includes a cutting line, two sets of cutting wheels 10 and a guide wheel set 20;

[0058] The two groups of cutting wheel assemblies 10 are arranged in a manner that the wire grooves 1012 of the cutting wheels face each other;

[0059] The cutting wire is annular and arranged in the wire grooves 1012 of the cutting wheels of the two cutting wheel assemblies 10 so that the cutting wire forms two rows of cutting line segments 30 in the first direction x along the cutting direction z;

[0060] The guide wheel assembly 20 is movably arranged along the second direction y, and the first direction x and the second direction y are staggered; both ends of at least one row of cutting segments 30 are guided by the guide wheel assembly 20 to adjust the spacing between the cutting segments 30;

[0061] The two single-line double-blade cutting units are arranged in a staggered manner, and the cutting line segments 30 of the two single-line double-blade cutting units are projected into a well shape along the cutting direction z.

[0062] The cutting wire is used to cut single-crystal silicon rods and can be a diamond cutting wire. The cutting wheel assembly 10 includes cutting wheels 101. Each cutting wheel 101 has a circular, concave wire groove along the axial direction on its circumferential surface, which is used to lay out the cutting wire. The wire groove 1012 of the cutting wheel guides the cutting wire along a first direction x, so that the cutting wire forms two rows of cutting segments 30 along a cutting direction z in the first direction x. The number and diameter of the cutting wheels 101 within the cutting wheel assembly 10 are not limited herein and can be set according to actual needs. Within a single-wire, double-blade cutting unit, the number of cutting wheels 101 in the two cutting wheel assemblies 10 can be different or the same, and the diameter of the cutting wheels 101 can be different or the same. The two cutting wheel assemblies 10 are arranged with their cutting wheel grooves 1012 facing each other. The grooves 1012 of the cutting wheels of the two cutting wheel assemblies 10 correspond to and face each other in space. The tilt angle of the wheel surface 1011 of the cutting wheel assemblies 10 can be between -60° and 60° (with reference to the cutting direction projection plane a). The guide wheel assembly 20 is movable along the second direction y. The cutting line segments 30 are guided by the guide wheel assembly 20 so that one or two rows of cutting line segments 30 are bent at both ends. This allows the two rows of cutting line segments 30 to move relative to each other as the guide wheel assembly 20 moves, thereby adjusting the spacing between the two rows of cutting line segments 30 and simultaneously tensioning the laid cutting line.

[0063] See also Figure 4 As shown, in some embodiments, the two ends of one row of cutting line segments 30 are guided by the guide wheel group 20 to adjust the spacing between the cutting line segments 30; the guide wheel group 20 moves in the second direction y to form bends at the two ends of one row of cutting line segments 30, so that one row of cutting line segments 30 moves relative to the other row of cutting line segments 30 as the guide wheel group 20 moves, thereby adjusting the spacing between the two rows of cutting line segments 30.

[0064] See also Figure 1-Figure 3As shown, in certain embodiments, both ends of the two rows of cutting line segments 30 are guided by guide wheel assemblies 20, respectively. The two sets of guide wheel assemblies 20 at the corresponding ends are relatively movable along the second direction y to adjust the spacing between the cutting line segments 30. The two ends of the two rows of cutting line segments 30 are guided by guide wheel assemblies 20, respectively. The two sets of guide wheel assemblies 20 at the corresponding ends are relatively movable along the second direction y to form bends at both ends of the two rows of cutting line segments 30. As a result, the two rows of cutting line segments 30 move relative to each other along the second direction y as the two guide wheel assemblies 20 move relative to each other, to adjust the spacing between the two rows of cutting line segments 30. At the same time, the laid cutting line is stretched and tensioned, and the portion of the cutting line located between the two sets of guide wheel assemblies 20, i.e., the cutting line segments 30, is jointly supported.

[0065] Among them, the relative movable setting of the guide wheel groups 20 on both sides of each cutting wheel group 10 can be any one of the following two movable states: one is that one of the guide wheel groups 20 is inactive, and the other guide wheel group 20 moves toward or away from the guide wheel group 20 along the second direction y; the other is that both guide wheel groups 20 are movable, and both move toward or away from each other along the second direction y. It should be noted that the guide wheel sizes of the two guide wheel groups 20 can be the same or different. The spacing between the two rows of cutting line segments 30 can be reduced by the two guide wheel groups 20 moving toward each other, or can be increased by the two guide wheel groups 20 moving away from each other. The above-mentioned first direction x refers to a direction on the vertical plane along the cutting direction z, indicating the linear movement direction along the cutting line; the above-mentioned second direction y refers to a direction on the vertical plane along the cutting direction z that is staggered with the first direction x, so that the two guide wheel groups 20 can move relative to each other to adjust the spacing between the two rows of cutting line segments 30. Preferably, the first direction x and the second direction y are perpendicular. The vertical arrangement of the first direction x and the second direction y can effectively utilize the limited space. Two sets of guide wheel groups 20 can be placed at the same time in the limited space, thereby improving the compactness and efficiency of the equipment. At the same time, it can avoid the mutual interference of the guide wheel groups 20 of the two single-line double-blade cutting units, reduce the friction and wear between the components, and improve the reliability of the movement of the guide wheel group 20.

[0066] In some embodiments, at least one first slide rail 50 may be provided at the position of the active trajectory (second direction y) of the two guide wheel assemblies 20. A first slide groove 40 corresponding to the first slide rail 50 is provided on each guide wheel assembly 20. The first slide groove 40 is slidably connected to the first slide rail 50 so that the guide wheel assembly 20 is slidably connected to the first slide rail 50. In some embodiments, the first slide rail 50 may be arranged between the cutting wheel assemblies 10 along the second direction y and located below the guide wheel assembly 20. The guide wheel assembly 20 is slidably connected to the first slide rail 50, guiding the guide wheel assembly 20 to move along a predetermined trajectory, thereby ensuring that the guide wheel assembly 20 maintains the correct position and direction during movement, effectively preventing the guide wheel assembly 20 from being misplaced or offset during movement, thereby improving the accuracy and stability of the active trajectory of the guide wheel assembly 20.

[0067] Although not shown in the figure, it is understood that the guide wheel groups 20 on both sides of each cutting wheel group 10 can be provided with at least one drive unit, and the drive unit drives the two guide wheel groups 20 to move toward or away from each other along the second direction y. In this embodiment, the drive unit can be one of the drive devices such as a cylinder, a hydraulic cylinder, an oil cylinder, and a motor. Taking the cylinder as an example, when the drive unit is a clamping cylinder, the drive unit has an output end that can move toward or away from each other, and then one output end of the drive unit is connected to a guide wheel group 20, that is, one drive unit can simultaneously control two relatively movable guide wheel groups 20; when the drive unit is a one-way telescopic cylinder, two drive units can be provided, and the output end of one drive unit is connected to a guide wheel group 20; when one of the guide wheel groups 20 is moved relative to the other guide wheel group 20 to adjust the spacing between the two rows of cutting line segments 30, only one of the guide wheel groups 20 needs to be connected to the drive unit.

[0068] In actual use, the two single-wire double-blade cutting units need to drive their respective cutting lines to move linearly, and at the same time, they need to drive the entire width-adjustable cutting mechanism to move relative to the single crystal silicon rod along the axial direction (cutting direction z) of the single crystal silicon rod to cut the single crystal silicon rod.

[0069] As long as the cutting line segments 30 of the two single-wire double-blade cutting units are projected in a cross shape along the cutting direction z, that is, the cutting line segments 30 of the two single-wire double-blade cutting units are projected in a cross shape on the cutting direction surface a, the width-adjustable cutting mechanism can complete the squaring of a single single-crystal silicon rod in a single operation. The two single-wire double-blade cutting units can be arranged in a variety of positions in the cutting direction z. In some embodiments, the cutting line segments 30 of the two single-wire double-blade cutting units are arranged against each other; in some implementations, the two single-wire double-blade cutting units are arranged in sequence along the cutting direction z, and the cutting line segments 30 of the two single-wire double-blade cutting units are spaced apart along the cutting direction z, that is, the two single-wire double-blade cutting units are at different positions in the cutting direction z to avoid interference between the two cutting line segments 30. During the squaring operation, the width-adjustable cutting mechanism moves relative to the single crystal silicon rod along the axial direction of the single crystal silicon rod, and the two single-wire double-knife cutting units cut the single crystal silicon rod in turn. When the single crystal silicon rod completely passes through the two single-wire double-knife cutting units, the squaring operation of the single single crystal silicon rod is completed.

[0070] Since the single crystal silicon rod is cut into a square cylinder during the squaring operation, the two cut surfaces need to be in a parallel state. For this reason, in a further embodiment, the two rows of cutting line segments 30 of the single-line double-blade cutting unit are arranged in parallel. The diameter and number of the cutting wheels 101 of the two groups of cutting wheel groups 10 of the single-line double-blade cutting unit can be consistent, and the cutting wheels 101 of the two groups of cutting wheel groups 10 are arranged one-to-one. Alternatively, the diameter and number of the cutting wheels 101 of the two groups of cutting wheel groups 10 of the single-line double-blade cutting unit are inconsistent, but the two groups of cutting wheel groups 10 pull the annular cutting line so that the cutting line segment 30 located between the two groups of cutting wheel groups 10 is in a parallel state.

[0071] See also Figure 1-Figure 3As shown, since the cutting line of the single-line double-blade cutting unit forms two rows of cutting line segments 30 between the two cutting wheel assemblies 10, the guide wheel assemblies 20 at both ends of the two rows of cutting line segments 30 are relatively movable in the second direction y to bend the cutting line segments 30, resulting in relative movement of the two rows of cutting line segments 30 to adjust the spacing between the two rows of cutting line segments 30. In other words, the two rows of cutting line segments 30 have four bends, specifically, the bends are located at both ends of the two rows of cutting line segments 30. In one embodiment, each guide wheel assembly 20 includes a first guide wheel 201, and at least one row of the cutting line segments 30 is guided by the corresponding first guide wheel 201 at both ends to adjust the spacing between the cutting line segments 30. The circumferential surface 2012 of the first guide wheel guides the cutting line segments 30 along the first direction x. Simultaneously, the first guide wheel 201 moves relative to the first guide wheel 201 in the second direction y to bend the cutting line segments 30, forming two rows of cutting line segments 30 that move relative to each other, thereby adjusting the spacing between the two rows of cutting line segments 30 and also providing tension for the arranged cutting line. To minimize the risk of the cutting line escaping from the first guide wheel 201 and / or the cutting wheel assembly 10 during the cutting operation, in a preferred embodiment, the wheel surface 2011 of the first guide wheel is parallel to the wheel surface 1011 of the cutting wheel of the cutting wheel assembly 10.

[0072] See also Figure 1-Figure 3 As shown, in another embodiment, the wire guide wheel assembly includes, in addition to the first guide wheel 201, a second guide wheel 202. The second guide wheel 202 guides the cutting line segment 30 along the direction of movement of the cutting line segment 30; at least one row of the cutting line segments 30 is guided at both ends by the first guide wheel 201 and the second guide wheel 202. The circumferential surface 2022 of the second guide wheel guides the cutting line segment 30 along the first direction x; the second guide wheel 202 bends the cutting line segment 30 in the cutting direction z. The cutting line segment 30 is guided by the first guide wheel 201 and the second guide wheel 202. It can be guided by the first guide wheel 201 and then by the second guide wheel 202 group 20; it can also be guided by the second guide wheel 202 and then by the first guide wheel 201 group 20. See Figure 5-Figure 6As shown, in a preferred embodiment, the second guide wheel 202 bends the cutting line segment 30 in the cutting direction z, and the wheel surface 1011 of the cutting wheel assembly 10 is tilted toward the tangential direction of the bending of the cutting line segment 30. The tilted wheel surface 1011 of the cutting wheel assembly 10 toward the tangential direction of the bending of the cutting line segment 30 increases the contact area between the cutting line segment 30 and the circumferential surface 2022 of the second guide wheel, preventing the cutting line from escaping from the guide wheel assembly 20 and / or the cutting wheel assembly 10, providing precise guidance for the cutting line, making the cutting path more accurate, and thus improving overall cutting accuracy. At the same time, the larger contact area disperses the pressure of the cutting line segment 30 on the guide wheel, reducing single-point wear and helping to extend the service life of the cutting line. The second guide wheel 202 bends the cutting line segment 30 in the cutting direction z. This can cause the cutting line segment 30 to be bent upward along the cutting direction z, i.e., the height of the cutting line segment 30 on the circumferential surface 2022 of the second guide wheel in the cutting direction z is greater than the height of the cutting line on the circumferential surface of the cutting wheel assembly 10 in the cutting direction z. It can also cause the cutting line segment 30 to be bent downward along the cutting direction z, i.e., the height of the cutting line segment 30 on the circumferential surface 2022 of the second guide wheel in the cutting direction z is less than the height of the cutting line segment 30 on the circumferential surface of the cutting wheel assembly 10 in the cutting direction z. To minimize the risk of the cutting line detaching from the second guide wheel 202 during the cutting operation, in a preferred embodiment, the wheel surface 2021 of the second guide wheel is parallel to the corresponding cutting direction z.

[0073] Although not shown in the figure, when performing cutting operations, it is necessary to apply traction to make the cutting line move linearly. Therefore, the single-line double-blade cutting unit also includes a driving wheel driving mechanism. The driving wheel is the cutting wheel 101 of the above-mentioned cutting wheel group 10 or one of the guide wheels of the guide wheel group 20. The driving wheel driving mechanism is connected to the driving wheel for driving the driving wheel to rotate; the driving wheel is responsible for driving the cutting line to move linearly. Under the rotation drive of the driving wheel, the cutting line can move linearly.

[0074] The driving wheel driving mechanism is connected to the rotating shaft of the driving wheel to drive the driving wheel to rotate. Specifically, the driving wheel is fixed with a rotating shaft. The driving wheel driving mechanism includes a motor, which can be a servo motor. The motor is connected to the rotating shaft of the driving wheel through a gear transmission connection or a coaxial connection through a coupling. The motor can drive the driving wheel to rotate through the rotating shaft.

[0075] In a further embodiment, the single-line double-blade cutting unit may further include a tensioning mechanism, wherein the tensioning wheel may be the cutting wheel 101 of the cutting wheel group 10 or one of the guide wheels of the guide wheel group 20, preferably the cutting wheel 101 of the cutting wheel group 10, and the tensioning mechanism is connected to the tensioning wheel for driving the tensioning wheel to move to tension the cutting line.

[0076] The tensioning mechanism can be a servo motor, a pneumatic cylinder, an oil cylinder, or a weight assembly. Taking a servo motor as an example, the tensioning mechanism can be an eccentric tensioning motor, with the tensioning pulley rotatably mounted on the eccentric shaft of the eccentric tensioning motor. Taking a weight assembly as an example, the tensioning mechanism includes a tensioning arm and a weight. The tensioning arm is hinged at its center, and the tensioning pulley and weight are respectively located at each end of the tensioning arm. The tensioning pulley is axially provided with a rotating shaft, which is rotatably mounted at the end of the tensioning arm via a bearing.

[0077] The utility model also provides a cutting device, which includes a width-adjustable cutting mechanism, a driving mechanism and a clamping mechanism, wherein the width-adjustable cutting mechanism is the above-mentioned width-adjustable cutting mechanism;

[0078] The clamping mechanism is used to clamp the single crystal silicon rod, and the clamping mechanism is located in the middle of the cutting line segments 30 of the two single-line double-blade cutting units projected into a well shape along the cutting direction z; the driving mechanism is used to drive the width-adjustable cutting mechanism to move along the clamping mechanism to cut the single crystal silicon rod.

[0079] In a further embodiment, the cutting wheels 101 of each cutting wheel assembly 10 and the guide wheels of each guide wheel assembly 20 of the width-adjustable cutting mechanism are each provided with a corresponding panel 60, and the rotation axes of the cutting wheels 101 of each cutting wheel assembly 10 and the rotation axes of the guide wheels of each guide wheel assembly 20 are each connected to the corresponding panel 60. The driving mechanism includes a linear driving mechanism and a bracket, the bracket is provided with a second slide rail, and the second slide rail is provided with a second slide groove. The width-adjustable cutting mechanism is provided at the second slide groove through the panel 60 so as to move along with the second slide groove in the cutting direction z. The linear driving mechanism can be a pneumatic cylinder, an oil cylinder, or a linear motor, connected to the slider, and is used to drive the second slide groove to move along the axial direction of the single crystal silicon rod clamped by the clamping mechanism.

[0080] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection of the present utility model. Therefore, based on the innovative concept of the present utility model, changes and modifications to the embodiments described herein, or equivalent structural or process transformations made using the contents of the present utility model specification and drawings, and direct or indirect application of the above technical solutions to other related technical fields are all included in the scope of protection of the present utility model patent.

Claims

1. A cutting mechanism with adjustable width, characterized in that: include Two single-line double-blade cutting units, each of which includes a cutting line, two sets of cutting wheels and a guide wheel set; The two groups of cutting wheel assemblies are arranged in a manner that the line grooves of the cutting wheels are opposite to each other; The cutting line is annular and arranged in the line grooves of the cutting wheels of the two cutting wheel groups so that the cutting line forms two rows of cutting line segments in the first direction along the cutting direction; The guide wheel group is movably arranged along the second direction, and the first direction and the second direction are staggered; at least two ends of the cutting line segments of a row are guided by the guide wheel group to adjust the spacing between the cutting line segments; The two single-line double-blade cutting units are staggered, and the cutting line segments of the two single-line double-blade cutting units are projected into a well shape along the cutting direction.

2. The width-adjustable cutting mechanism according to claim 1, characterized in that: The two ends of the two rows of cutting segments are guided by guide wheel groups respectively, and the two guide wheel groups at the corresponding ends are relatively movable along the second direction to adjust the spacing between the cutting segments.

3. The width-adjustable cutting mechanism according to claim 1, characterized in that: The first direction is perpendicular to the second direction.

4. The width-adjustable cutting mechanism according to claim 1, characterized in that: The cutting line segments of the two single-line double-blade cutting units are spaced apart along the cutting direction.

5. The width-adjustable cutting mechanism according to claim 1, characterized in that: The two rows of cutting line segments of the single-line double-blade cutting unit are arranged in parallel.

6. The width-adjustable cutting mechanism according to claim 1, characterized in that: The cutting wheel set includes cutting wheels, and the diameters and numbers of the cutting wheels of the two cutting wheel sets of each single-line double-blade cutting unit are consistent.

7. The width-adjustable cutting mechanism according to claim 1, characterized in that: Each of the guide wheel groups includes a first guide wheel, and both ends of at least one row of cutting line segments are guided by the corresponding first guide wheel to adjust the spacing between the cutting line segments.

8. The width-adjustable cutting mechanism according to claim 7, characterized in that: The wheel surface of the first guide wheel is parallel to the wheel surface of the cutting wheel of the cutting wheel assembly.

9. The width-adjustable cutting mechanism according to claim 7 or 8, characterized in that: Each of the guide wheel groups also includes a second guide wheel, and both ends of at least one row of cutting segments are guided by the first guide wheel and the second guide wheel; the second guide wheel bends the cutting segments in the cutting direction, and the wheel surface of the cutting wheel of the cutting wheel group is inclined toward the tangent direction of the bending of the cutting segments.

10. A cutting device, characterized in that: It comprises a width-adjustable cutting mechanism, a driving mechanism and a clamping mechanism, wherein the width-adjustable cutting mechanism is the width-adjustable cutting mechanism according to any one of claims 1 to 9; The clamping mechanism is used to clamp the single crystal silicon rod, and the clamping mechanism is located in the middle of the cutting line segments of the two single-line double-blade cutting units projected into a well shape along the cutting direction; the driving mechanism is used to drive the width-adjustable cutting mechanism to move along the clamping mechanism to cut the single crystal silicon rod.

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