Cutting mechanism, wire saw unit and wire cutting machine

Abstract

The utility model relates to the technical field of wire cutting machines, particularly provides a cutting mechanism, a wire saw unit and a wire cutting machine, and aims to solve the problem that a compression roller group in the existing cutting mechanism needs to bear overlarge radial load during cutting operation due to direct contact with two wire nets. In order to achieve the purpose, according to the cutting mechanism, the pressing roller set is arranged on the side, away from the first wire net, of the second wire net, the second wire net is pressed to the first wire net under the action of the first wire groove in the pressing roller set, and therefore the purpose that the first wire net and the second wire net are coplanar is achieved; and the height of the to-be-cut workpiece is not limited by the distance of a double-layer wire net in the prior art any more. Besides, the groove depth of the second wire groove is set to be larger than that of the first wire groove, so that when the first wire groove bears the second wire net coplanar with the first wire net, a gap exists between the groove bottom of the second wire groove and the first wire net, and therefore the radial load of the first wire net on the compression roller set can be reduced during cutting operation, and the service life of the compression roller set is prolonged.

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 is widely used in the cutting of semiconductor, photovoltaic, and other workpieces due to its high production efficiency, low operating costs, and high precision. Currently, most wire EDM machines on the market employ either a three-roll or four-roll cutting mechanism. Both mechanisms offer advantages such as high precision, high efficiency, wide applicability, good stability, and ease of operation and maintenance. Taking a four-roll wire EDM machine as an example... Figure 1 As shown, the four-roll cutting mechanism 100 consists of four cutting rollers arranged in a quadrilateral shape. However, the cutting lines in the four meshes formed on the four cutting rollers are not on the same plane. If one mesh is designated as the cutting mesh for the cutting task, the mesh opposite it may interfere with the workpiece to be cut during the cutting operation, thus leaving additional marks on the workpiece that are different from the cutting marks formed by the cutting mesh. This interference phenomenon not only limits the height of the workpiece to be cut, but also leads to an increase in the defect rate of the cut workpiece.

[0003] To solve the problem of limited workpiece height mentioned above, such as Figure 2-3 As shown, a pressure roller assembly 12 is typically used to press one wire mesh of the cutting roller 11 against the other wire mesh corresponding to it, so that the two wire meshes are arranged in a coplanar manner. However, since the pressure roller assembly 12 is in direct contact with these two wire meshes, the pressure roller assembly needs to bear the radial load from both wire meshes simultaneously during the cutting operation. After long-term operation, the pressure roller assembly is prone to wear, deformation, or even breakage, which will seriously affect the service life of the pressure roller assembly.

[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 reduce the radial load on the pressure roller assembly while achieving coplanarity of two wire meshes, this application provides a cutting mechanism comprising:

[0006] Cutting line;

[0007] A cutting roller assembly, wherein the cutting wire is wound around the cutting roller assembly to form a first wire mesh and a second wire mesh;

[0008] The pressure roller assembly is located on the side of the second wire mesh away from the first wire mesh. The pressure roller assembly is provided with staggered first and second wire grooves. The first wire groove is configured to press the second wire mesh against the first wire mesh to achieve coplanarity between the first and second wire meshes. The second wire groove corresponds to the first wire mesh and has a groove depth greater than that of the first wire groove.

[0009] By positioning the pressure roller assembly on the side of the second wire mesh away from the first wire mesh, and pressing the second wire mesh against the first wire mesh under the action of the first groove on the pressure roller assembly, the first and second wire meshes can be made coplanar. This eliminates the limitation on the height of the workpiece to be cut by the spacing between the double-layer wire meshes in existing cutting mechanisms, thereby improving the applicability and practicality of the cutting mechanism of this application. Furthermore, by setting the depth of the second groove to be greater than that of the first groove, a gap exists between the bottom of the second groove and the first wire mesh when the first groove bears the second wire mesh, which is coplanar with the first wire mesh. This reduces the radial load of the first wire mesh on the pressure roller assembly during cutting operations, thereby increasing the service life of the pressure roller assembly.

[0010] In the preferred embodiment of the above-mentioned cutting mechanism, the pressure roller group includes a first pressure roller group and a second pressure roller group arranged at intervals, and the first pressure roller group and the second pressure roller group are each provided with the first groove and the second groove.

[0011] By using a first and second pressure roller group arranged at intervals to press the second wire mesh against the first wire mesh, it is beneficial for the wire meshes that are coplanar between the two pressure roller groups to perform cutting operations on the workpiece to be cut.

[0012] In the preferred embodiment of the above-mentioned cutting mechanism, the cutting roller group is provided with a third groove capable of winding the cutting line. The third groove is arranged parallel to the first groove and the second groove respectively. The third groove and the first groove are staggered in the axial direction and their bottoms are coplanar on one side of the first wire mesh. The third groove and the first groove correspond one-to-one and are coplanar.

[0013] By placing the first groove on the pressure roller and the third groove on the cutting roller assembly on the same side of the first wire mesh, it is beneficial to achieve coplanarity between the first and second wire meshes. Furthermore, by ensuring that the second and third grooves on the pressure roller are coplanar and correspond one-to-one, the first groove supports the second wire mesh (which is coplanar with the first wire mesh), while a gap exists between the bottom of the second groove and the first wire mesh. This reduces the radial load of the first wire mesh on the pressure roller assembly during cutting operations, thereby improving the service life of the pressure roller assembly.

[0014] In the preferred embodiment of the above-mentioned cutting mechanism, the first pressure roller group includes at least one first pressure roller, and each of the at least one first pressure roller is provided with the first groove and the second groove; and / or

[0015] The second pressure roller group includes at least one second pressure roller, and each of the at least one second pressure roller is provided with the first groove and the second groove.

[0016] In the preferred embodiment of the above-mentioned cutting mechanism, the cutting roller group includes a first cutting roller group and a second cutting roller group arranged at intervals, the first cutting roller group and the second cutting roller group forming the first wire mesh and the second wire mesh, and the pressure roller group is arranged between the two.

[0017] By placing the pressure roller group between the first cutting roller group and the second cutting roller group, the pressure roller group can press the second wire mesh against the first wire mesh, thereby achieving the purpose of the second wire mesh and the first wire mesh being coplanar.

[0018] In the preferred embodiment of the above-described cutting mechanism, the first cutting roller group includes at least one first cutting roller; and / or

[0019] The second cutting roller group includes at least one second cutting roller.

[0020] In the preferred embodiment of the above-mentioned cutting mechanism, the distance between adjacent first and second grooves is equal.

[0021] By setting adjacent first and second grooves at equal intervals, the consistency and quality of the cut workpiece can be effectively improved.

[0022] In the preferred embodiment of the above-mentioned cutting mechanism, the first groove and the second groove have the same groove shape; or

[0023] The first groove and the second groove have different groove shapes.

[0024] In the preferred embodiment of the above-mentioned cutting mechanism, the first groove is a V-groove; and / or

[0025] The second groove is a V-shaped groove or a rectangular groove.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] In the above-mentioned preferred wire cutting machine technical solution, the wire cutting machine is a slicing machine, a squaring machine, or a cutting machine. Attached Figure Description

[0031] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0032] Figure 1 This is a schematic diagram of a wire cutting machine in the prior art;

[0033] Figure 2 This is a schematic diagram of a cutting mechanism in the prior art;

[0034] Figure 3 This is a schematic diagram of a cutting mechanism from another angle in the existing technology;

[0035] Figure 4 This is a schematic diagram of the first embodiment of the wire cutting machine of this application;

[0036] Figure 5 yes Figure 4 A schematic diagram of the cutting mechanism;

[0037] Figure 6 This is a schematic diagram of the second embodiment of the wire cutting machine of this application;

[0038] Figure 7 This is a schematic diagram of the third embodiment of the wire cutting machine of this application;

[0039] Figure 8 yes Figure 7 A schematic diagram of the cutting mechanism;

[0040] Figure 9 This is a schematic diagram of the fourth embodiment of the wire cutting machine of this application;

[0041] Figure 10 This is a structural diagram of the second pressure roller a in this application.

[0042] List of reference numerals in the attached diagram:

[0043] 100. Cutting mechanisms in the prior art;

[0044] 1. Cutting mechanism; 11. Cutting roller group; 111. First cutting roller group; 1111. First cutting roller a; 1112. First cutting roller b; 112. Second cutting roller group; 1121. Second cutting roller a; 1122. Second cutting roller b; 1131. Third groove; 12. Pressure roller group; 121. First pressure roller group; 1211. First pressure roller a; 1212. First pressure roller b; 122. Second pressure roller group; 12 21. Second pressure roller a; 122. Second pressure roller b; 1231. First groove; 1232. Second groove; 13. Cutting line; 131. First wire mesh; 132. Second wire mesh; 2. Feed roller; 3. Take-up 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

[0045] Preferred embodiments of this application are described below 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. It should be noted that in the description of this application, terms such as "upper," "lower," "inner," "bottom," and "end," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not 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] To address the problem of reducing the radial load on the pressure roller assembly while achieving coplanarity of two wire meshes, this application discloses a wire cutting machine comprising a wire saw unit and a feeding mechanism 5. The wire saw unit includes a wire feeding mechanism 2, a wire take-up mechanism 3, and a cutting mechanism 1 as described in the following embodiments. By employing the cutting mechanism 1 in the following embodiments, this application can reduce the radial load on the pressure roller assembly 12 while achieving coplanarity of the two wire meshes.

[0048] like Figure 4 and 5As shown, the cutting mechanism 1 of this application includes a cutting wire 13, a cutting roller group 11, and a pressure roller group 12. The cutting roller group 11 includes a first cutting roller group 111 and a second cutting roller group 112. The first cutting roller group 111 includes a first cutting roller, namely the first cutting roller a1111, and the second cutting roller group 112 includes a second cutting roller, namely the second cutting roller a1121. The first cutting roller a1111 and the second cutting roller a1121 have the same outer diameter and are spaced apart. Multiple third grooves 1131 suitable for winding the cutting wire 13 are formed on both the first cutting roller a1111 and the second cutting roller a1121. The multiple third grooves 1131 on each cutting roller are spaced apart along the axial direction of the cutting roller. The third grooves 1131 are V-shaped grooves, which are arranged circumferentially along the outer circumferential surface of the cutting roller. The cutting wire 13 is repeatedly wound on the first cutting roller a1111 and the second cutting roller a1121, forming a first wire mesh 131 and a second wire mesh 132 between them. The first wire mesh 131 and the second wire mesh 132 are arranged sequentially along the feeding direction of the feeding mechanism 5.

[0049] Here, the feed direction refers to, for example, Figure 4 , 6 7 and 9 indicate the top-to-bottom direction.

[0050] It should be noted that, in the case of only the cutting roller group 11, the first wire mesh 131 and the second wire mesh 132 between the first cutting roller a1111 and the second cutting roller a1121 are not arranged in the same plane, but are arranged at intervals. It should also be noted that this application does not limit the specific type of the cutting wire 13, as long as it can cut the workpiece 4. For example, the cutting wire 13 can be diamond wire.

[0051] Of course, the size relationship between the first cutting roller a1111 and the second cutting roller a1121 is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the outer diameter of the first cutting roller a1111 can be larger than the outer diameter of the second cutting roller a1121. Alternatively, the outer diameter of the first cutting roller a1111 can be smaller than the outer diameter of the second cutting roller a1121, as long as the first cutting roller a11111 and the second cutting roller a1121 can form the first wire mesh 131 and the second wire mesh 132.

[0052] Furthermore, the number of the first cutting rollers in the first cutting roller group 111 and the number of the second cutting rollers in the second cutting roller group 112 are not fixed in this application, and those skilled in the art can adjust them as needed. For example, the number of the first cutting rollers in the first cutting roller group 111 can be two, three, or other numbers. And / or, the number of the second cutting rollers in the second cutting roller group 112 can be two, three, or other numbers. The following description uses the example of two first cutting rollers in the first cutting roller group 111 and two second cutting rollers in the second cutting roller group 112. Figure 7-8 As shown, the two first cutting rollers are first cutting roller a1111 and first cutting roller b1112, and the two second cutting rollers are second cutting roller a1121 and second cutting roller b1122. These four cutting rollers are arranged in a quadrilateral. The cutting wire 13 is sequentially wound around the third groove 1131 of the first cutting roller a1111, first cutting roller b1112, second cutting roller b1122, and second cutting roller a1121, forming a first wire mesh 131 between the first cutting roller a11111 and second cutting roller a1121, and a second wire mesh 132 between the first cutting roller b1112 and second cutting roller b1122. The distance between the first cutting roller a1111 and second cutting roller a1121 can be as follows: Figure 6 The distance shown is greater than the distance between the first cutting roller b1112 and the second cutting roller b1122, or it can also be as follows: Figure 9 The distance shown is less than the distance between the first cutting roller b1112 and the second cutting roller b1122. The distance between the two rollers refers to the vertical distance between their axes.

[0053] It should be noted that when there are two or more first cutting rollers and second cutting rollers, this application does not restrict the size relationship of these four cutting rollers, as long as the first cutting roller a1111 and the second cutting roller a1121 can form a first wire mesh 131 and the first cutting roller b1112 and the second cutting roller b1122 can form a second wire mesh 132.

[0054] See next Figure 4 , 510. The pressure roller group 12 includes a first pressure roller group 121 and a second pressure roller group 122 spaced apart. The first pressure roller group 121 includes a first pressure roller, namely the first pressure roller a1211. The second pressure roller group 122 includes a second pressure roller, namely the second pressure roller a1221. Both the first pressure roller a1211 and the second pressure roller a1221 are located on the side of the second wire mesh 132 away from the first wire mesh 131, and are disposed between the first cutting roller a1111 and the second cutting roller a1121. The first pressure roller a1211 is close to the first cutting roller a1111, and the second pressure roller a1221 is close to the second cutting roller b1122, such that the coplanar first wire mesh and second wire mesh between the first pressure roller a1211 and the second pressure roller a1221 are used for cutting the workpiece 4. The outer diameters of the first pressure roller a1211 and the second pressure roller a1221 are the same as those of the first cutting roller a1111 and the second cutting roller b1122, and the axes of the four rollers are parallel and coplanar. Multiple first grooves 1231 are provided on the outer circumferential surfaces of both the first pressure roller a1211 and the second pressure roller a1221, and these grooves are spaced apart along the axial direction of the roller. Each first groove 1231 is a V-shaped groove, arranged annularly along the outer circumferential surface of the cutting roller. The first grooves 1231 and the third groove 1131 are parallel, and each first groove 1231 corresponds one-to-one with a cutting line 13 in the second mesh 132. The groove depth of the first groove 1231 is D1, and the groove depth of the third groove 1131 is D2, where D1 = D2, so that the cutting lines 13 on the second mesh 132 can achieve coplanarity after passing through the first grooves 1231.

[0055] It should be noted that during the operation of the cutting mechanism 1, the first wire mesh 131 and the second wire mesh 132 move in opposite directions. This causes the forces exerted on the workpiece 4 by the cutting wire 13 during cutting to intersect and cancel each other out, thereby effectively reducing the load on the feeding mechanism 5 carrying the workpiece 4. During the cutting operation, the rotation direction of the cutting roller group 11 is opposite to that of the pressure rollers; that is, the rotation direction of the first cutting roller a1111 and the second cutting roller a1121 is the same, but opposite to that of the first pressure roller a1211 and the second pressure roller a1221.

[0056] Of course, the size relationship between the first pressure roller a1211 and the second pressure roller a1221 is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the outer diameter of the first pressure roller a1211 can be larger or smaller than the outer diameter of the second pressure roller a1221, as long as the bottom of the groove on the side of the first wire groove 1231 near the first wire mesh 131 is coplanar with the bottom of the groove on the side of the third wire groove 1131 near the first wire mesh 131, so that the first wire mesh 131 and the second wire mesh 132 are coplanar. It should be noted that the size relationship between the first cutting roller a1111, the second cutting roller a1121, the first pressure roller a1211, and the second pressure roller a1221 can be arbitrarily set, as long as the bottom of the groove on the side of the first wire groove 1231 near the first wire mesh 131 is coplanar with the bottom of the groove on the side of the third wire groove 1131 near the first wire mesh 131, so that the first wire mesh 131 and the second wire mesh 132 are coplanar.

[0057] Furthermore, the number of first pressure rollers in the first pressure roller group 121 and the number of second pressure rollers in the second pressure roller group 122 are not fixed in this application, and those skilled in the art can adjust them as needed. For example, the first pressure roller group 121 may also include two or more first pressure rollers. And / or, the second pressure roller group 122 may also include two or more second pressure rollers. The description assumes that the first pressure roller group 121 includes two first pressure rollers and the second pressure roller group 122 includes two second pressure rollers. Figure 6 As shown, the two first pressure rollers are first pressure roller a1211 and first pressure roller b1212, and the two second pressure rollers are second pressure roller a1221 and second pressure roller b1222. The second pressure roller b1222 is located between the first cutting roller a1111 and the first pressure roller a1211, and the second pressure roller b1222 is located between the second cutting roller a1121 and the second pressure roller a1221. The first pressure roller b1212 and the second pressure roller b1222, together with the first pressure roller a1211 and the second pressure roller a1221, press the second wire mesh 132 against the first wire mesh 131. This arrangement can improve the stability of the wire mesh, while also dispersing the load from the wire mesh and increasing the service life of the pressure roller group 12. The positions of the first pressure roller b1212 and the second pressure roller b1222 are not fixed. For example, the first pressure roller b1212 can also be set on the side of the first pressure roller a1211 away from the first cutting roller a1111, and the second pressure roller b1222 can also be set on the side of the second pressure roller a1221 away from the second cutting roller a1121. In this case, the coplanar first wire mesh and second wire mesh between the first pressure roller b1212 and the second pressure roller b1222 are used to perform cutting operations on the workpiece to be cut.

[0058] It should also be noted that when the number of the first cutting roller and the second cutting roller is two or more, the first pressure roller group 121 and the second pressure roller group 122 are arranged within the area enclosed by the first cutting roller group 111 and the second cutting roller group 112, so that the first pressure roller group 121 and the second pressure roller group 122 are located between the first cutting roller group 111 and the second cutting roller group 112. In this case, by using multiple cutting rollers, the wrap angle of the cutting line on the pressure roller can be increased, thereby improving the service life of the pressure roller and avoiding stress concentration.

[0059] See next Figure 4 , 5 In addition to rollers 10, the outer circumferential surfaces of the first pressure roller a1211 and the second pressure roller a1221 are also provided with a plurality of second grooves 1232. The plurality of second grooves 1232 and the plurality of first grooves 1231 are staggered along the axial direction of the cutting roller to which they belong. The plurality of second grooves 1232 correspond one-to-one with the cutting lines 13 on the first wire mesh 131. The second groove 1232 is a rectangular groove, which is arranged in a ring along the outer circumferential surface of the pressure roller to which it belongs. The groove depth of the second groove 1232 is D2, where D2>D1, so that when the first groove 1231 carries the second wire mesh 132 and the first wire mesh 131 and the second wire mesh 132 are coplanar, the gap between the first wire mesh 131 and the bottom of the groove 1232 reduces the radial load from the first wire mesh 131 borne by the first pressure roller 121 and the second pressure roller 122 during the cutting operation.

[0060] Of course, the groove shape of the second groove 1232 is not fixed in this application, and those skilled in the art can adjust it as needed. For example, the second groove 1232 can also be a V-shaped groove.

[0061] It should be noted that when the outer diameter of the first pressure roller a1211 and / or the outer diameter of the second pressure roller a1221 are larger than the outer diameters of the first cutting roller a1111 and the second cutting roller a1121, in order to achieve the coplanarity of the first wire mesh 131 and the second wire mesh 132 and reduce the radial load borne by the first pressure roller a1211 and the second pressure roller a1221 from the first wire mesh 131, it is only necessary that the groove depth of the second wire groove 1232 on the first pressure roller 121 and / or the groove depth of the second wire groove 1232 on the second pressure roller a1221 are greater than the groove depth of the first wire groove 1231 and the bottoms of the first wire groove 1231 and the third wire groove 1131 on the same side of the first wire mesh 131 are coplanar. Alternatively, when the outer diameter of the first pressure roller a1211 and / or the outer diameter of the second pressure roller a1221 are smaller than the outer diameters of the first cutting roller a1111 and the second cutting roller a1121, in order to achieve coplanarity of the first wire mesh 131 and the second wire mesh 132 and reduce the radial load borne by the first pressure roller 121 and the second pressure roller 122 from the first wire mesh 131, it is necessary to adjust the axial position of the pressure roller a1211 and / or the second pressure roller a1221. While ensuring that the bottom of the first wire groove 1231 and the third wire groove 1131 are coplanar on one side of the first wire mesh 131, the groove depth of the second wire groove 1232 is greater than the groove depth of the first wire groove 1231. Furthermore, when the first pressure roller group 121 includes two or more first pressure rollers and the second pressure roller group 122 includes two or more second pressure rollers, this application does not restrict the size relationship of the multiple pressure rollers or the size relationship between the pressure rollers and the cutting rollers, as long as the bottom of the first groove 1231 on one side of the first wire mesh 131 on the multiple pressure rollers is coplanar, the bottom of the first groove 1231 and the third groove 1131 on one side of the first wire mesh 131 is coplanar, and the groove depth of the first groove 1231 is less than the groove depth of the second groove 1231.

[0062] In addition, such as Figure 4 , 6 As shown in Figures 7 and 9, 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 13. 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 13. After being released from the wire feeding mechanism 2, the cutting wire 13 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.

[0063] See Figure 4 , 67 and 9, 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.

[0064] 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.

[0065] See next Figure 4 , 6 The tension mechanism, as described in sections 7 and 9, also includes a second tension wheel 62 located on the wire exit side of the cutting mechanism. The guiding mechanism further 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. Specifically, the third guide wheel 73 guides the cutting wire 12 exiting the cutting mechanism 1, ensuring it enters the predetermined recovery path; the second tension wheel 62 applies appropriate tension to maintain the cutting wire 12 taut during recovery; 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.

[0066] 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.

[0067] like Figure 4 , 6 As shown in Figures 7 and 9, 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 first wire mesh 131 and second wire mesh 132 can be cut to obtain the cut workpiece.

[0068] 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.

[0069] 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.

[0070] 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: Cutting line (13); A cutting roller assembly (11) on which the cutting wire (13) is wound to form a first wire mesh (131) and a second wire mesh (132); A pressure roller assembly (12) is located on the side of the second wire mesh (132) away from the first wire mesh (131). The pressure roller assembly (12) is provided with staggered first wire grooves (1231) and second wire grooves (1232). The first wire groove (1231) is configured to allow the second wire mesh (132) to press against the first wire mesh (131) so that the first wire mesh (131) and the second wire mesh (132) are coplanar. The second wire groove (1232) corresponds to the first wire mesh (131) and its groove depth is greater than that of the first wire groove (1231).

2. The cutting mechanism according to claim 1, characterized in that, The pressure roller group (12) includes a first pressure roller group (121) and a second pressure roller group (122) spaced apart, and the first pressure roller group (121) and the second pressure roller group (122) are each provided with the first groove (1231) and the second groove (1232).

3. The cutting mechanism according to claim 2, characterized in that, The cutting roller assembly (11) is provided with a third groove (1131) capable of winding the cutting wire (13). The third groove (1131) is arranged parallel to the first groove (1231) and the second groove (1232). The bottom of the third groove (1131) and the first groove (1231) are coplanar on one side of the first wire mesh (131). The third groove (1131) and the second groove (1232) correspond one-to-one and are coplanar.

4. The cutting mechanism according to claim 2, characterized in that, The first pressure roller group (121) includes at least one first pressure roller, and each of the at least one first pressure roller is provided with the first groove (1231) and the second groove (1232); and / or The second pressure roller group (122) includes at least one second pressure roller, and the at least one second pressure roller is provided with the first groove (1231) and the second groove (1232).

5. The cutting mechanism according to any one of claims 1-4, characterized in that, The cutting roller group (11) includes a first cutting roller group (111) and a second cutting roller group (112) arranged at intervals. The first cutting roller group (111) and the second cutting roller group (112) form the first wire mesh (131) and the second wire mesh (132), and the pressure roller group (12) is arranged between them.

6. The cutting mechanism according to claim 5, characterized in that, The first cutting roller group (111) includes at least one first cutting roller; and / or The second cutting roller group (112) includes at least one second cutting roller.

7. The cutting mechanism according to any one of claims 1-4, characterized in that, The distance between adjacent first groove (1231) and second groove (1232) is equal.

8. The cutting mechanism according to any one of claims 1-4, characterized in that, The first groove (1231) and the second groove (1232) have the same groove type; or The first groove (1231) and the second groove (1232) have different groove shapes.

9. The cutting mechanism according to claim 8, characterized in that, The first groove (1231) is a V-groove; and / or The second groove (1232) is a V-shaped groove or a rectangular groove.

10. A wire saw unit, characterized in that, The wire saw unit includes a cutting mechanism (1) as described in any one of claims 1-9, 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).

11. A wire cutting machine, characterized in that, The wire cutting machine includes the cutting mechanism according to any one of claims 1-9, or the wire saw unit according to claim 10.

12. The wire cutting machine according to claim 11, characterized in that, The wire cutting machine is a slicing machine, a squaring machine, or a cutting machine.

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