Cutting mechanism, wire saw unit and wire cutting machine

Abstract

The utility model relates to the technical field of linear cutting machine, concretely provides a cutting mechanism, wire saw unit and linear cutting machine, and the utility model aims at solving how to make cutting mechanism can cut different height workpiece to be cut without increasing the volume and cost of cutting mechanism. For this purpose, the cutting mechanism of the utility model sets up multiple annular wire grooves in at least three cutting rollers, and sets up the annular wire grooves on these cutting rollers as one-to-one corresponding and coplanar arrangement, is beneficial to the formation of at least two groups of cutting wire one-to-one corresponding and coplanar cutting wire net on the cutting roller group, so that these cutting wire nets form consistent cutting traces on the workpiece to be cut, not only improve the applicability and practicality of the cutting mechanism of the utility model, make the cutting mechanism of the utility model can cut different height workpiece to be cut, no longer be restricted by the height of workpiece to be cut, and do not need to increase the volume and cost of cutting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of wire cutting machines, specifically providing a cutting mechanism, a wire saw unit, and a wire cutting machine. Background Technology

[0002] Wire EDM technology, due to its high production efficiency, low operating cost, and high precision, is widely used in the cutting of semiconductor and photovoltaic components. Currently, most wire EDM machines on the market employ either a three-roll or four-roll cutting mechanism. The three-roll mechanism consists of three cutting rollers arranged in a triangular pattern, while the four-roll mechanism consists of four cutting rollers arranged in a quadrilateral pattern. Both mechanisms offer advantages such as high precision, high efficiency, wide applicability, good stability, and ease of operation and maintenance, making them widely used in the wire EDM field. However, regardless of whether it's a three-roll or four-roll mechanism, the cutting lines of the multiple wire meshes formed on each mechanism are not all coplanar. When one wire mesh is used as the cutting mesh for a cutting operation, at least one of the other meshes may interfere with the workpiece during the cutting process, leaving additional marks on the workpiece that differ from the cutting marks formed by the original wire mesh. This interference not only limits the height of the workpiece to be cut, but also increases the defect rate of the cut workpiece.

[0003] To address the issue of limited workpiece height, the common approach is to increase the distance between the interference mesh in the cutting mechanism and the mesh used for cutting. However, this approach inevitably leads to an increase in the overall size of the cutting mechanism and higher costs.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] To address at least one problem in the prior art, namely, how to enable a cutting mechanism to cut workpieces of different heights without increasing its size and cost, this application provides a cutting mechanism comprising:

[0006] A cutting roller assembly, comprising at least three cutting rollers, each of which is provided with a plurality of annular grooves spaced apart along its axial direction, and the annular grooves on the at least three cutting rollers are one-to-one corresponding and coplanarly arranged;

[0007] The cutting line, when configured as an annular groove wound around the at least three cutting rollers, can form at least two sets of cutting line meshes and one set of staggered line meshes, wherein the cutting lines in the at least two sets of cutting line meshes correspond one-to-one and the corresponding cutting lines are coplanar.

[0008] By setting multiple annular grooves on at least three cutting rollers and arranging these annular grooves in a one-to-one correspondence and coplanar manner, it is beneficial to form at least two sets of one-to-one correspondence and coplanar cutting wire meshes on the cutting roller group. This allows these cutting wire meshes to form consistent cutting marks on the workpiece to be cut, which not only improves the applicability and practicality of the cutting mechanism of this application, but also enables the cutting mechanism of this application to perform cutting operations on workpieces of different heights, no longer limited by the height of the workpiece to be cut, but also without increasing the volume and cost of the cutting mechanism.

[0009] In the preferred embodiment of the above-mentioned cutting mechanism, the cutting roller group includes three cutting rollers, namely a first cutting roller, a second cutting roller, and a third cutting roller. The cutting wire is sequentially wound in the annular grooves of the first cutting roller, the second cutting roller, and the third cutting roller, and after passing through the second cutting roller, it is staggered and wound in the annular groove of the third cutting roller, so that the cutting wire mesh is formed between the first cutting roller and the second cutting roller and between the first cutting roller and the third cutting roller, respectively, and the staggered wire mesh is formed between the second cutting roller and the third cutting roller.

[0010] By sequentially winding the cutting wire around the first, second, and third cutting rollers, and then staggering it around the third cutting roller after passing the second cutting roller, cutting wire meshes can be formed between the first and second cutting rollers and between the first and third cutting rollers. These two cutting wire meshes correspond one-to-one and are arranged in the same plane, thereby forming consistent cutting marks on the workpiece to be cut. This allows the cutting mechanism of this application to perform cutting operations on workpieces of different heights.

[0011] In the preferred embodiment of the above-mentioned cutting mechanism, the first cutting roller, the second cutting roller, and the third cutting roller are arranged in a triangular pattern.

[0012] Arranging the first, second, and third cutting rollers in a triangular pattern helps improve the stability of the wire mesh, ensuring that the cutting wire mesh between the first and second cutting rollers, as well as between the first and third cutting rollers, forms consistent cutting marks on the workpiece to be cut.

[0013] In the preferred embodiment of the above-mentioned cutting mechanism, the second cutting roller is positioned close to the third cutting roller and far away from the first cutting roller.

[0014] By bringing the second cutting roller closer to the third cutting roller and further away from the first cutting roller, it is advantageous to use the cutting wire mesh between the first and second cutting rollers, as well as between the first and third cutting rollers, to perform cutting operations on the workpiece to be cut.

[0015] In the preferred embodiment of the above-mentioned cutting mechanism, the cutting roller group includes four cutting rollers, namely a first cutting roller, a second cutting roller, a third cutting roller, and a fourth cutting roller. The cutting wire is sequentially wound in the annular grooves of the first cutting roller, the fourth cutting roller, the second cutting roller, and the third cutting roller, and after passing through the second cutting roller, it is staggered and wound in the annular groove of the third cutting roller, so that the cutting wire mesh is formed between the first cutting roller and the fourth cutting roller, between the second cutting roller and the fourth cutting roller, and between the first cutting roller and the third cutting roller, respectively, and the staggered wire mesh is formed between the second cutting roller and the third cutting roller.

[0016] By sequentially winding the cutting wire around the first cutting roller, the fourth cutting roller, the second cutting roller, and the third cutting roller, and then passing it through the second cutting roller and then staggering it around the third cutting roller, cutting wire meshes can be formed between the first and fourth cutting rollers, between the second and fourth cutting rollers, and between the first and third cutting rollers. These three cutting wire meshes correspond one-to-one and are arranged in a coplanar manner, thereby forming consistent cutting marks on the workpiece to be cut. This allows the cutting mechanism of this application to perform cutting operations on workpieces of different heights.

[0017] In the preferred embodiment of the above-mentioned cutting mechanism, the first cutting roller, the fourth cutting roller, the second cutting roller, and the third cutting roller are arranged in a quadrilateral shape.

[0018] By arranging the first, fourth, second, and third cutting rollers in a quadrilateral pattern, the stability of the cutting wire mesh is improved, ensuring that consistent cutting marks are formed on the workpiece to be cut.

[0019] In the preferred embodiment of the above-mentioned cutting mechanism, the first cutting roller is positioned close to the fourth cutting roller and away from the third cutting roller, and the second cutting roller is positioned close to the third cutting roller and away from the fourth cutting roller, so that the cutting wire mesh between the first cutting roller and the third cutting roller and the cutting wire mesh between the second cutting roller and the fourth cutting roller can perform cutting operations on the workpiece to be tested; or

[0020] The second cutting roller is positioned close to the third and fourth cutting rollers, while the first cutting roller is positioned away from the third and fourth cutting rollers, so that the cutting wire mesh between the first and third cutting rollers and the cutting wire mesh between the first and fourth cutting rollers can perform cutting operations on the workpiece to be tested; or

[0021] The third cutting roller is positioned close to the first and second cutting rollers, and the fourth cutting roller is positioned away from the first and second cutting rollers, so that the cutting wire mesh between the first and fourth cutting rollers and the cutting wire mesh between the second and fourth cutting rollers can perform cutting operations on the workpiece to be tested.

[0022] By positioning the first cutting roller closer to the fourth cutting roller and further away from the third cutting roller, and the second cutting roller closer to the third cutting roller and further away from the fourth cutting roller, it is advantageous for the cutting wire mesh between the first and third cutting rollers and the cutting wire mesh between the second and fourth cutting rollers to perform the cutting operation on the workpiece to be cut. Alternatively, by positioning the second cutting roller closer to the third and fourth cutting rollers and the first cutting roller further away from the third and fourth cutting rollers, it is advantageous for the cutting wire mesh between the first and third cutting rollers and the cutting wire mesh between the first and fourth cutting rollers to perform the cutting operation on the workpiece to be cut. Alternatively, by positioning the third cutting roller closer to the first and second cutting rollers and the fourth cutting roller further away from the first and second cutting rollers, it is advantageous for the cutting wire mesh between the first and fourth cutting rollers and the cutting wire mesh between the second and fourth cutting rollers to perform the cutting operation on the workpiece to be cut.

[0023] This application also provides a wire saw unit, which includes the cutting mechanism described in the preferred embodiment above, a wire feeding mechanism located on the wire feeding side of the cutting mechanism, and a wire take-up mechanism located on the wire output side of the cutting mechanism.

[0024] It should be noted that this wire saw unit has all the technical effects of the aforementioned cutting mechanism, which will not be repeated here.

[0025] This application also provides a wire cutting machine, which includes the cutting mechanism described in the above preferred solution, or the wire saw unit described in the above preferred solution.

[0026] It should be noted that this wire cutting machine has all the technical effects of the aforementioned cutting mechanism, which will not be repeated here.

[0027] In the preferred embodiment of the above-mentioned wire cutting machine, the wire cutting machine is a slicing machine, a squaring machine, or a cutting machine. Attached Figure Description

[0028] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0029] Figure 1 This is a schematic diagram of a wire EDM machine with a three-roller cutting mechanism in the prior art;

[0030] Figure 2 yes Figure 1 A schematic diagram of a three-roller cutting mechanism;

[0031] Figure 3 This is a schematic diagram of a wire EDM machine with a four-roller cutting mechanism in the prior art;

[0032] Figure 4 yes Figure 3 A schematic diagram of a four-roller cutting mechanism;

[0033] Figure 5 This is a schematic diagram of the first embodiment of the wire cutting machine in this application;

[0034] Figure 6 yes Figure 5 A schematic diagram of the cutting mechanism;

[0035] Figure 7 This is a schematic diagram of the second embodiment of the wire cutting machine in this application;

[0036] Figure 8 yes Figure 7 A schematic diagram of the cutting mechanism;

[0037] Figure 9 This is a schematic diagram of the third embodiment of the wire cutting machine in this application;

[0038] Figure 10 yes Figure 9 A schematic diagram of the cutting mechanism;

[0039] Figure 11 This is a schematic diagram of the fourth embodiment of the wire cutting machine in this application;

[0040] Figure 12 This is a schematic diagram of the fifth embodiment of the wire cutting machine in this application.

[0041] List of reference numerals in the attached diagram:

[0042] 100. Cutting mechanisms in the prior art;

[0043] 1. Cutting mechanism; 11. Cutting roller group; 111. First cutting roller; 112. Second cutting roller; 113. Third cutting roller; 114. Fourth cutting roller; 115. 1. Annular groove; 12. Cutting line; 121. First wire mesh; 122. Second wire mesh; 123. Third wire mesh; 124. Fourth wire mesh; 2. Wire feeding roller; 3. Wire taking roller; 4. Workpiece to be cut; 5. Feeding mechanism; 61. First tension wheel; 62. Second tension wheel; 71. First guide wheel; 72. Second guide wheel; 73. Third guide wheel; 74. Fourth guide wheel. Detailed Implementation

[0044] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0045] It should be noted that in the description of this application, the terms "upper", "lower", "inner", "bottom", "end", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0046] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "set up," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] First refer to Figure 1-4 In existing technologies, the cutting mechanism 100 in a wire EDM machine can be a three-roller cutting mechanism or a four-roller cutting mechanism. For example... Figure 1-2 As shown, the cutting mechanism 100 is a three-roller cutting mechanism. When the cutting mechanism 100 includes three cutting rollers, the cutting wires 12 are wound around the three cutting rollers and form three triangularly distributed wire meshes. The cutting wires 12 in these three wire meshes are not all coplanar and will constitute a spatial constraint on the workpiece 4 to be cut, particularly limiting the height of the workpiece 4. Specifically, when one wire mesh is used as the cutting wire mesh for performing the cutting task, at least one of the other two wire meshes may interfere with the workpiece 4 during the cutting operation. This interference will limit the height of the workpiece 4. When the height of the workpiece 4 is large, in order to avoid the above-mentioned interference, it is necessary to increase the distance between the wire mesh that causes interference and the wire mesh used for the cutting task. Figure 3-4 As shown, the cutting mechanism 100 is a four-roller cutting mechanism. When the cutting mechanism 100 includes four cutting rollers, the cutting lines 12 form four quadrilaterally distributed wire meshes on the four cutting rollers. However, the cutting lines 12 on these wire meshes are not on the same plane. If one wire mesh is designated as the cutting wire mesh for performing the cutting task, the other wire mesh set opposite it may interfere with the workpiece 4 to be cut during the cutting operation. This interference will limit the height of the workpiece 4 to be cut. When the height of the workpiece 4 to be cut is large, in order to avoid the above-mentioned interference, it is also necessary to increase the distance between the wire mesh that causes interference and the wire mesh that serves as the cutting task. However, regardless of whether it is a three-roller or four-roller cutting mechanism, increasing the distance between the wire mesh that causes interference and the wire mesh that serves as the cutting task will inevitably lead to an increase in the overall size and cost of the cutting mechanism 100.

[0048] like Figure 5-12 As shown, in order to solve the problem of how to enable the cutting mechanism to cut workpieces 4 of different heights without increasing the size and cost of the cutting mechanism, the wire EDM machine 1 of this application includes a wire saw unit and a feeding mechanism 5, wherein the wire saw unit includes a wire feeding mechanism 2, a wire take-up mechanism 3, and the cutting mechanism 1 in the following embodiments. By adopting the cutting mechanism 1 in the following embodiments, this application can overcome the limitation of the height of the workpiece 4 to be cut and realize the cutting task of workpieces 4 of different heights.

[0049] The cutting mechanism 1 includes various configuration forms, combined with Figure 5-12 The configuration of the cutting mechanism 1 is described.

[0050] In the first embodiment, see Figure 5-6 The cutting mechanism 1 is a three-roller cutting mechanism 1, which includes a cutting roller group 11 and a cutting wire 12. The cutting roller group 11 includes three cutting rollers, namely a first cutting roller 111, a second cutting roller 112, and a third cutting roller 113. These three cutting rollers are spaced apart from each other and their axes are parallel but not coplanar, so that the first cutting roller 111, the second cutting roller 112, and the third cutting roller 113 are triangularly distributed. Each of the three cutting rollers is provided with a plurality of annular grooves 1151 suitable for the cutting wire 12 to be wound around. The plurality of annular grooves 1151 are spaced apart along the axial direction of the cutting roller to facilitate the reciprocating winding of the cutting wire 12 on the cutting roller group 11 to form a wire mesh.

[0051] It should be noted that this application does not limit the groove shape of the annular groove 1151, as long as it can form a stable wire mesh on the cutting roller group 11. For example, the groove shape of the annular groove 1151 is a V-shaped groove. It should also be noted that this application does not limit the specific type of cutting wire 12, as long as it can perform cutting operations on the workpiece 4 to be cut. For example, the cutting wire 12 can be diamond wire.

[0052] See next Figure 5-6 The cutting wire 12 is sequentially wound around the annular groove 1151 of the first cutting roller 111, the second cutting roller 112 and the third cutting roller 113, and after passing through the annular groove 1151 of the second cutting roller 112, it is staggered and wound around the annular groove 1151 of the third cutting roller 113, so that a first wire mesh 121 is formed between the first cutting roller 111 and the second cutting roller 112, a second wire mesh 122 is formed between the second cutting roller 112 and the third cutting roller 113, and a third wire mesh 123 is formed between the first cutting roller 111 and the third cutting roller 113. Since the annular grooves 1151 on the first cutting roller 111, the second cutting roller 112, and the third cutting roller 113 are one-to-one correspondences and coplanar, the cutting lines 12 in the first wire mesh 121 and the cutting lines 12 in the third wire mesh 123 are one-to-one correspondences and coplanar, so that the first wire mesh 121 and the third wire mesh 123 are cutting wire meshes, and the second wire mesh 122 is a staggered wire mesh. When the first wire mesh 121 and the third wire mesh 123 are cutting wire meshes, the cutting lines 12 in these two wire meshes are in the feeding direction of the feeding mechanism 5 (e.g., ...). Figure 5 The projection shown in the bottom-up direction is a seamless real image, which is beneficial for the two wire meshes to form consistent cutting marks on the workpiece 4 to be cut. This makes the cutting mechanism 1 no longer limited by the height of the workpiece 4 to be cut, thereby improving the applicability of the cutting mechanism 1 and avoiding the problem that one of the first wire mesh 121 and the third wire mesh 123 will produce other cutting marks on the workpiece 4 to be cut when cutting the workpiece 4, thereby increasing the defect rate of the cut workpiece.

[0053] Of course, the formation method of the cutting wire mesh and the staggered wire mesh is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the cutting wire 12 is wound sequentially around the annular groove 1151 of the first cutting roller 111, the second cutting roller 112 and the third cutting roller 113, and after passing through the annular groove 1151 on the first cutting roller 111, it is staggered and wound around the annular groove 1151 on the second cutting roller 112. At this time, the second wire mesh 122 and the third wire mesh 123 are cutting wire meshes, and the first wire mesh 121 is a staggered wire mesh. Alternatively, the cutting wire 12 is wound sequentially around the annular groove 1151 of the first cutting roller 111, the second cutting roller 112 and the third cutting roller 113, and after passing through the annular groove 1151 on the third cutting roller 113, it is staggered and wound around the annular groove 1151 on the first cutting roller 111. At this time, the first wire mesh 121 and the second wire mesh 122 are cutting wire meshes, and the third wire mesh 123 is a staggered wire mesh.

[0054] See next Figure 5-6 The first cutting roller 111 is close to the wire feeding mechanism 2 and simultaneously away from the second cutting roller 112 and the third cutting roller 113. The second cutting roller 112 and the third cutting roller 113 are close to the wire take-up mechanism 3, so that the first wire mesh 121 between the first cutting roller 111 and the second cutting roller 112 and the third wire mesh 123 between the first cutting roller 111 and the third cutting roller 113 can be sequentially arranged along the feeding direction of the feeding mechanism 5, which is beneficial for the first wire mesh 121 and the third wire mesh 123 to perform cutting operations on the workpiece 4 to be cut.

[0055] It should be noted that the use of two wire meshes to cut the workpiece 4 does not mean that both meshes will perform the cutting task. Rather, it means that while one mesh is cutting the workpiece 4, the other mesh can pass through the cutting gap on the workpiece 4 to ensure that consistent cutting marks are formed on the workpiece 4. Figure 5 As shown, the first wire mesh 121 directly cuts the workpiece 4 to be cut, while the third wire mesh 123 does not undertake the cutting task. During the cutting process, the first wire mesh 121 will form multiple cutting gaps on the workpiece 4 to be cut. These cutting gaps correspond one-to-one with the cutting lines 12 in the third wire mesh 123, so that the third wire mesh 123 can pass through the cutting gaps on the workpiece 4 to be cut, avoiding the third wire mesh 123 from producing other cutting marks on the workpiece 4 to be cut, thereby increasing the defect rate of the cut workpiece.

[0056] Of course, the positional relationship between the first, second, and third cutting rollers and the feeding and unloading mechanisms is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the first cutting roller 111 is close to the take-up mechanism 3 and simultaneously away from the second cutting roller 112 and the third cutting roller 113, while the second cutting roller 112 and the third cutting roller 113 are close to the unloading mechanism 2. Figure 7-8 As shown.

[0057] Furthermore, the arrangement of the wire mesh in the feed direction is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the second wire mesh 122 between the first cutting roller 111 and the third cutting roller 113 and the first wire mesh 121 between the first cutting roller 111 and the second cutting roller 112 can also be arranged sequentially along the feed direction of the feed mechanism 5.

[0058] In the second implementation, such as Figure 9-12 As shown, the cutting mechanism 1 is a four-roller cutting mechanism 1, which includes a cutting roller group 11 and cutting wires 12. The cutting roller group 11 includes four cutting rollers, namely a first cutting roller 111, a second cutting roller 112, a third cutting roller 113, and a fourth cutting roller 114. These four cutting rollers are spaced apart from each other and their axes are parallel but not coplanar, so that the first cutting roller 111, the fourth cutting roller 114, the second cutting roller 112, and the third cutting roller 113 are arranged in a quadrilateral shape. Each of the four cutting rollers is provided with a plurality of annular grooves 1151, which are spaced apart along the axial direction of the cutting roller to facilitate the reciprocating winding of the cutting wires 12 on the cutting roller group 11 to form a wire mesh.

[0059] It should be noted that this application does not limit the groove shape of the annular groove 1151, as long as it can form a stable wire mesh on the cutting roller group 11. For example, the groove shape of the annular groove 1151 is a V-shaped groove.

[0060] See next Figure 9The first cutting roller 111, the fourth cutting roller 114, the second cutting roller 112, and the third cutting roller 113 are arranged sequentially according to the direction of the cutting line 12, so that the cutting line 12 can be wound sequentially around the annular groove 1151 of the first cutting roller 111, the fourth cutting roller 114, the second cutting roller 112, and the third cutting roller 113. After passing through the annular groove 1151 on the second cutting roller 112, the cutting line 122 is staggered and wound around the annular groove 1151 on the third cutting roller 113. This results in a first wire mesh 121 being formed between the first cutting roller 111 and the fourth cutting roller 114, a fourth wire mesh 124 being formed between the fourth cutting roller 114 and the second cutting roller 112, a second wire mesh 122 being formed between the second cutting roller 112 and the third cutting roller 113, and a third wire mesh 123 being formed between the third cutting roller 113 and the first cutting roller 111. Since the annular grooves 1151 on the first cutting roller 111, the second cutting roller 112, the third cutting roller 113, and the fourth cutting roller 114 are all corresponding and coplanar, the cutting lines 12 in the first wire mesh 121, the third wire mesh 123, and the fourth wire mesh 124 are also corresponding and coplanar, making the first wire mesh 121, the third wire mesh 123, and the fourth wire mesh 124 cutting wire meshes, and the second wire mesh 122 an offset wire mesh. The first cutting roller 111 is positioned close to the fourth cutting roller 114 and away from the third cutting roller 113, and the second cutting roller 112 is positioned close to the third cutting roller 113 and away from the fourth cutting roller 114, enabling the third wire mesh 123 and the fourth wire mesh 124 to perform cutting operations. Since the projections of the cutting lines 12 in the third mesh 123 and the fourth mesh 124 in the feed direction of the feed mechanism 5 are seamless, it is beneficial for these two meshes to form consistent cutting marks on the workpiece 4 to be cut. This makes the cutting mechanism 1 no longer limited by the height of the workpiece 4 to be cut, thereby improving the applicability of the cutting mechanism 1 and avoiding the problem that when one of the third mesh 123 and the fourth mesh 124 is cutting the workpiece 4, the other of the third mesh 123 and the fourth mesh 124 will produce other cutting marks on the workpiece 4 to be cut, thereby increasing the defect rate of the cut workpiece.

[0061] Of course, the formation methods of the cutting wire mesh and the staggered wire mesh are not fixed in this application, and those skilled in the art can make adjustments as needed. For example, the cutting wire 12 can also be staggered and wound around the annular wire groove 1151 on the fourth cutting roller 114 after passing through the annular wire groove 1151 on the first cutting roller 111. In this case, the second wire mesh 122, the third wire mesh 123, and the fourth wire mesh 124 are cutting wire meshes, and the first wire mesh 121 is a staggered wire mesh. Alternatively, the cutting wire 12 can be staggered and wound around the annular wire groove 1151 on the second cutting roller 112 after passing around the annular wire groove 1151 on the fourth cutting roller 114. In this case, the first wire mesh 121, the second wire mesh 122, and the third wire mesh 123 are cutting wire meshes, and the fourth wire mesh 124 is a staggered wire mesh. Alternatively, the cutting line 12 can be bypassed by the annular groove 1151 on the third cutting roller 113 and then misaligned and wound around the annular groove 1151 on the first cutting roller 111. In this case, the first wire mesh 121, the second wire mesh 122 and the fourth wire mesh 124 are cutting wire meshes, and the third wire mesh 123 is a misaligned wire mesh.

[0062] See next Figure 9 The first cutting roller 111 and the fourth cutting roller 114 are close to the wire feeding mechanism 2 and away from the second cutting roller 112 and the third cutting roller 113. The second cutting roller 112 and the third cutting roller 113 are close to the wire take-up mechanism 3, so that the fourth wire mesh 124 between the second cutting roller 112 and the fourth cutting roller 114 and the third wire mesh 123 between the first cutting roller 111 and the third cutting roller 113 are arranged sequentially along the feeding direction of the feeding mechanism 5, which is beneficial for cutting the workpiece 4. Among them, the fourth wire mesh 124 directly cuts the workpiece 4, while the third wire mesh 123 does not undertake the cutting task. During the cutting process, the fourth wire mesh 124 will form multiple cutting gaps on the workpiece 4. These cutting gaps correspond one-to-one with the cutting lines 12 in the third wire mesh 123, so that the fourth wire mesh 124 can pass through the cutting gaps on the workpiece 4, avoiding the fourth wire mesh 124 from producing other cutting marks on the workpiece 4, thereby increasing the defect rate of the cut workpiece.

[0063] Of course, the positional relationship between the first, second, third, and fourth cutting rollers and the wire feeding / unloading mechanism 2 is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the first cutting roller 111 and the fourth cutting roller 114 are close to the take-up mechanism 3 and far away from the second cutting roller 112 and the third cutting roller 113, while the second cutting roller 112 and the third cutting roller 113 are close to the wire feeding mechanism 2.

[0064] Furthermore, the wire mesh used for cutting operations is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the second cutting roller 112 is positioned close to the third cutting roller 113 and the fourth cutting roller 114, while the first cutting roller 111 is positioned away from the third cutting roller 113 and the fourth cutting roller 114. In this case, the first wire mesh 121 and the third wire mesh 123 are used to perform cutting operations on the workpiece to be measured, and the first wire mesh 121 and the third wire mesh 123 are arranged sequentially along the feeding direction of the feeding mechanism 5. See [link to details] for more information. Figure 11 Alternatively, the third cutting roller 113 can be positioned close to the first cutting roller 111 and the second cutting roller 112, while the fourth cutting roller 114 can be positioned away from the first cutting roller 111 and the second cutting roller 112. In this case, the first wire mesh 121 and the fourth wire mesh 124 are used to perform cutting operations on the workpiece to be measured, and the first wire mesh 121 and the fourth wire mesh 124 are arranged sequentially along the feeding direction of the feeding mechanism 5. See [link to details] for more information. Figure 12 .

[0065] In addition, such as Figure 5 , 7 As shown in Figures 9 and 11-12, the wire saw unit of this application includes a cutting mechanism 1, a wire feeding mechanism 2 located on the wire feeding side of the cutting mechanism 1, and a wire take-up mechanism 3 located on the wire output side of the cutting mechanism 1. The wire feeding mechanism 2 is located on the wire feeding side of the cutting mechanism 1 and is responsible for releasing the cutting wire 12. The wire take-up mechanism 3 is located on the wire output side of the cutting mechanism 1 and is responsible for retrieving the cutting wire 12. After being released from the wire feeding mechanism 2, the cutting wire 12 is wound around the cutting mechanism 1 at the wire feeding end of the cutting mechanism 1 to form a wire mesh, which is used to cut the workpiece 4 mounted on the feed mechanism 5. The wire is then led out from the wire output end and retrieved by the wire take-up mechanism 3.

[0066] See Figure 5 , 7 9 and 11-12, the wire saw unit also includes a tension mechanism and a guiding mechanism. The tension mechanism includes a first tension wheel 61 located on the wire inlet side of the cutting mechanism, and the guiding mechanism includes a second guide wheel 72 and a first guide wheel 71 located on the wire inlet side of the cutting mechanism. The wire feeding mechanism includes a wire feeding roller 2. The wire feeding roller 2, the first guide wheel 71, the first tension wheel 61, and the second guide wheel 72 are arranged sequentially according to the path of the cutting wire 12. The first guide wheel 71 guides the cutting wire 12 released by the wire feeding roller 2 into a predetermined path, preventing deviation. The first tension wheel 61 maintains the cutting wire 12 under tension, thereby ensuring cutting accuracy. The second guide wheel 72 further guides the cutting wire 12 into the cutting mechanism 1.

[0067] It should be noted that in other preferred embodiments, the arrangement of one or more of the first guide wheel 71, the second guide wheel 72, and the first tension wheel 61 is not mandatory, and those skilled in the art can choose as needed.

[0068] See next Figure 5 , 7 9 and 11-12, the tension mechanism also includes a second tension wheel 62 located on the wire exit side of the cutting mechanism, and the guiding mechanism also includes a third guide wheel 73 and a fourth guide wheel 74 located on the wire exit side of the cutting mechanism. The take-up mechanism 3 includes a take-up roller 3. The third guide wheel 73, the second tension wheel 62, the fourth guide wheel 74, and the take-up roller 3 are arranged sequentially according to the wire path of the cutting wire 12. Among them, the third guide wheel 73 is responsible for guiding the cutting wire 12 from the cutting mechanism 1, ensuring that it enters the predetermined recovery path; the second tension wheel 62 applies appropriate tension to keep the cutting wire 12 taut during the recovery process; and the fourth guide wheel 74 further guides the cutting wire 12, allowing it to smoothly enter the take-up roller 3, thereby completing the recovery of the cutting wire 12.

[0069] It should be noted that in other preferred embodiments, the arrangement of one or more of the third guide wheel 73, the second tension wheel 62 and the fourth guide wheel 74 is not mandatory, and those skilled in the art can choose as needed.

[0070] like Figure 5 , 7 As shown in Figures 9 and 11-12, the wire EDM machine of this application has a workpiece 4 to be cut mounted on the feed mechanism 5. By moving the workpiece 4 to be cut in the feed direction, the coplanar wire mesh can be used to cut the workpiece 4 to obtain the cut workpiece.

[0071] The wire cutting machine can be a cutting machine, a squaring machine, or a slicing machine. The workpiece 4 to be cut in this application can be a hard and brittle material rod such as a monocrystalline silicon rod, a polycrystalline silicon rod, a sapphire rod, or a magnetic rod.

[0072] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0073] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A cutting mechanism, characterized in that, The cutting mechanism (1) includes: A cutting roller group (11) includes at least three cutting rollers, each of which is provided with a plurality of annular grooves (1151) spaced apart along its axial direction, and the annular grooves (1151) on the at least three cutting rollers are one-to-one corresponding and coplanarly arranged; The cutting line (12) is configured to form at least two sets of cutting line meshes and one set of staggered line meshes when it is wound around the at least three cutting rollers in an annular groove (1151). The cutting lines (12) in the at least two sets of cutting line meshes are in one-to-one correspondence and the corresponding cutting lines (12) are coplanar.

2. The cutting mechanism according to claim 1, characterized in that, The cutting roller group (11) includes three cutting rollers, namely a first cutting roller (111), a second cutting roller (112), and a third cutting roller (113). The cutting wire (12) is wound sequentially in the annular groove (1151) of the first cutting roller (111), the second cutting roller (112), and the third cutting roller (113), and after passing the second cutting roller (112), it is staggered and wound in the annular groove (1151) of the third cutting roller (113), so that the cutting wire mesh is formed between the first cutting roller (111) and the second cutting roller (112) and between the first cutting roller (111) and the third cutting roller (113), respectively, and the staggered wire mesh is formed between the second cutting roller (112) and the third cutting roller (113).

3. The cutting mechanism according to claim 2, characterized in that, The first cutting roller (111), the second cutting roller (112), and the third cutting roller (113) are arranged in a triangle.

4. The cutting mechanism according to claim 2 or 3, characterized in that, The second cutting roller (112) is positioned close to the third cutting roller (113) and away from the first cutting roller (111).

5. The cutting mechanism according to claim 1, characterized in that, The cutting roller group (11) includes four cutting rollers, namely a first cutting roller (111), a second cutting roller (112), a third cutting roller (113), and a fourth cutting roller (114). The cutting wire (12) is wound sequentially in the annular groove (1151) of the first cutting roller (111), the fourth cutting roller (114), the second cutting roller (112), and the third cutting roller (113), and after passing the second cutting roller (112), it is staggered and wound in the annular groove (1151) of the third cutting roller (113), so that the cutting wire mesh is formed between the first cutting roller (111) and the fourth cutting roller (114), between the second cutting roller (112) and the fourth cutting roller (114), and between the first cutting roller (111) and the third cutting roller (113), respectively, and the staggered wire mesh is formed between the second cutting roller (112) and the third cutting roller (113).

6. The cutting mechanism according to claim 5, characterized in that, The first cutting roller (111), the fourth cutting roller (114), the second cutting roller (112), and the third cutting roller (113) are arranged in a quadrilateral shape.

7. The cutting mechanism according to claim 5 or 6, characterized in that, The first cutting roller (111) is positioned close to the fourth cutting roller (114) and away from the third cutting roller (113), and the second cutting roller (112) is positioned close to the third cutting roller (113) and away from the fourth cutting roller (114), so that the cutting wire mesh between the first cutting roller (111) and the third cutting roller (113) and the cutting wire mesh between the second cutting roller (112) and the fourth cutting roller (114) can perform cutting operations on the workpiece to be tested; or The second cutting roller (112) is disposed close to the third cutting roller (113) and the fourth cutting roller (114), and the first cutting roller (111) is disposed away from the third cutting roller (113) and the fourth cutting roller (114), so that the cutting wire mesh between the first cutting roller (111) and the third cutting roller (113) and the cutting wire mesh between the first cutting roller (111) and the fourth cutting roller (114) can perform cutting operations on the workpiece to be tested; or The third cutting roller (113) is positioned close to the first cutting roller (111) and the second cutting roller (112), and the fourth cutting roller (114) is positioned away from the first cutting roller (111) and the second cutting roller (112), so that the cutting wire mesh between the first cutting roller (111) and the fourth cutting roller (114) and the cutting wire mesh between the second cutting roller (112) and the fourth cutting roller (114) can perform cutting operations on the workpiece to be tested.

8. A wire saw unit, characterized in that, The wire saw unit includes a cutting mechanism (1) as described in any one of claims 1-7, a wire feeding mechanism located on the wire feeding side of the cutting mechanism (1), and a wire take-up mechanism located on the wire output side of the cutting mechanism (1).

9. A wire cutting machine, characterized in that, The wire cutting machine includes the cutting mechanism as described in any one of claims 1-7, or the wire saw unit as described in claim 8.

10. The wire cutting machine according to claim 9, characterized in that, The wire cutting machine is a slicing machine, a squaring machine, or a cutting machine.

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