Wire sawing table

Abstract

The utility model relates to the technical field of silicon core cutting, and specifically provides a wire cutting tool rest, including at least three groups of guide pulley module, each guide pulley module includes two guide pulleys, and the cutting wire reciprocating shuttles on the two guide pulleys form the wiring layer for cutting, and the cutting wire is configured as horizontal wiring, the wiring layer formed by the guide pulley module is staggered in the vertical direction and is parallel to each other in the horizontal direction, and the overlapping part of the vertical projection of the wiring layer of at least three groups of guide pulley module forms a plurality of triangular cutting areas. Therefore, the silicon rod can be cut by adopting at least three layers of different height wiring layers, and the triangular silicon core can be cut, so that the core rate can be improved, and the edge and corner materials generated during cutting can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of silicon core cutting technology, specifically to a wire cutting tool station. Background Technology

[0002] Currently, the main method for cutting silicon cores using vertical wire cutting equipment is square silicon core cutting, with the cutting lines distributed in two layers. However, this square cutting method has the problem of low core yield. Utility Model Content

[0003] To solve one of the aforementioned technical problems, this utility model proposes the following technical solution.

[0004] The first aspect of this utility model provides a wire cutting stage, including at least three sets of guide wheel modules. Each set of guide wheel modules includes two guide wheels. A cutting line reciprocates on the two guide wheels to form a wiring layer for cutting. The cutting line is configured as a horizontal wiring layer. The wiring layers formed by the guide wheel modules are staggered in the vertical direction and parallel to each other in the horizontal direction. The overlapping portion of the vertical projection of the wiring layers of the at least three sets of guide wheel modules forms multiple triangular cutting areas.

[0005] In addition, the wire EDM tool holder according to the above embodiments of the present invention may also have the following additional technical features.

[0006] In some examples, the wire cutting stage also includes a wiring wheel set, with each guide wheel corresponding to a wiring wheel set, and the two guide wheels and the corresponding wiring wheel set cooperate with each other to perform wiring.

[0007] In some examples, there are at least two cut lines, with at least one cut line forming two wiring layers.

[0008] In some examples, each set of the wiring wheels is also configured with an infeed wheel and an outfeed wheel on the same side, and the cutting wire enters from the infeed wheel, shuttles back and forth through the wiring wheels, and then exits from the outfeed wheel.

[0009] In some examples, the outgoing wheels of one set of wiring wheels are arranged adjacent to the incoming wheels of an adjacent set of wiring wheels, and a cutting line is switched and wired through the adjacent outgoing and incoming wheels to form two wiring layers in series.

[0010] In some examples, the guide wheel includes a driving wheel and a driven wheel that cooperate with each other, each guide wheel has an even number of grooves, and all guide wheels have the same number of grooves.

[0011] In some examples, the triangular cut area comprises multiple equilateral triangles.

[0012] The technical solution of this utility model embodiment uses at least three wiring layers of different heights to cut silicon rods, which can cut triangular silicon cores, thereby improving the core yield and reducing the scrap generated during cutting. Attached Figure Description

[0013] Figure 1 This is a top view of a wire EDM tool holder according to an embodiment of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of a cutting line as an example of this utility model.

[0015] Figure 3 This is a top view of a cutting line, which is an example of this utility model.

[0016] Figure 4 This is a schematic diagram illustrating an example of the present invention, showing three layers of wiring staggered vertically.

[0017] Figure 5 This is a schematic diagram of the wire inlet and outlet wheels of a wiring module, which is an example of this utility model.

[0018] Reference numerals in the attached diagram: 1. Guide wheel; 2. Cutting line; 3. Infeed wheel; 4. Outfeed wheel; 11. Driving wheel; 12. Driven wheel. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model addresses the problem of low core yield caused by square cutting methods in related technologies by proposing a cutting table for silicon core cutting equipment. Compared with square cutting, the core yield of silicon cores with the same side surface area is higher when using this cutting table.

[0021] Figure 1 This is a top view of a wire EDM tool holder according to an embodiment of the present invention.

[0022] like Figure 1 As shown, the wire EDM station includes at least three sets of guide wheel modules (three sets are shown in the figure). Each set of guide wheel modules includes two guide wheels 1. The cutting line 2 shuttles back and forth on the two guide wheels to form a wiring layer for cutting. The cutting line 2 is configured to be horizontal wiring. The wiring layers formed by the guide wheel modules are staggered in the vertical direction and parallel to each other in the horizontal direction. The overlapping part of the vertical projection of the wiring layers of at least three sets of guide wheel modules forms multiple triangular cutting areas.

[0023] At least three guide wheel modules are mounted on the tool holder base, each module comprising two symmetrically arranged guide wheels 1. The triangle in the triangular cutting area can be an equilateral triangle. The cutting wire is used to cut the silicon rod and can be diamond wire.

[0024] like Figures 2 to 4 As shown, when there are three sets of guide wheel modules, the height of the three sets of modules increases sequentially so that the height of the three wiring layers increases sequentially. The distance between the heights of two adjacent wiring layers is the same, that is, they are arranged at intervals. For example, the distance between the heights of the first wiring layer and the second wiring layer, and the distance between the heights of the second wiring layer and the third wiring layer, can both be about 25mm.

[0025] Specifically, during the cutting process, the silicon ingot is vertically placed into the triangular cutting area and kept stationary while the cutting head moves from bottom to top to cut out an equilateral triangular silicon core. Compared to cutting out a square silicon core, the yield of the same side surface area is higher, resulting in more usable silicon cores.

[0026] Therefore, the wire cutting station of this utility model uses at least three wiring layers of different heights to cut silicon rods, which can cut triangular silicon cores, thereby improving the core yield and reducing the scrap generated during cutting.

[0027] In one example, such as Figure 5 As shown, there are at least two cut lines 2, with at least one cut line 2 forming two routing layers. The other cut line forms a total of three routing layers on top of the two routing layers, with the height of the three routing layers increasing sequentially. The overlapping part of the three layers in the vertical projection forms a triangular cutting area.

[0028] In one example, the wire cutting stage also includes a wiring wheel set, with each guide wheel 1 corresponding to a wiring wheel set, and the two guide wheels 1 and the corresponding wiring wheel sets cooperate with each other to perform wiring.

[0029] like Figure 5 As shown, each set of wiring wheels is also equipped with an inlet wheel 3 and an outlet wheel 4 located on the same side. The cutting wire 2 enters through the inlet wheel 3, passes through the wiring wheel set, and then exits through the outlet wheel 5.

[0030] A set of wire feeding wheels 4 is arranged adjacent to the set of wire feeding wheels 3 of the adjacent set of wire feeding wheels. A cutting line is switched and wired through the adjacent set of wire feeding wheels 4 and wire feeding wheels 3 to form two wire feeding layers in series.

[0031] In one example, refer to Figure 1The guide wheel 1 may include a driving wheel 11 and a driven wheel 12 that cooperate with each other. One end of the driving wheel shaft is fixedly connected to one end of the driven wheel shaft to achieve centering. Each guide wheel 1 has an even number of grooves, and all guide wheels have the same number of grooves, such as 10, 12, 14, 16, 20 grooves, etc. Figures 2 to 5 (16 are shown in the figure), with each layer of cutting lines 2 wound around the corresponding guide wheel 1 through a wire groove.

[0032] The wire channels can be evenly spaced on each guide wheel 1, with each wire channel having the same spacing, so that the intersection of the three wiring layers forms several equilateral triangles, cutting the silicon rod into equilateral triangular silicon cores. The distance between two adjacent wire channels can be determined according to the size of the cut silicon core, such as 21mm, 31mm, etc.

[0033] Furthermore, the wire EDM tool holder also includes a drive structure and a swing angle adjustment structure disposed on the tool holder base. The drive structure is used to drive the guide wheel 1 to rotate, and the swing angle adjustment structure is used to adjust the angle between the cutting line 2 and the guide wheel 1.

[0034] Specifically, the drive structure may include a motor that drives the drive wheel 11 to rotate, thereby moving the cutting wire 2 via the driven wheel 12, tensioning the cutting wire to form a cross-shaped cutting mesh for cutting silicon rods. The angle between the cutting wire 2 and the guide wheel 1 is adjusted by the swing angle adjustment structure, so that the cutting wire 2 and the guide wheel 1 are approximately tangent, avoiding the cutting wire from breaking due to changes in wire twist caused by vibration.

[0035] In summary, the triangular wiring cutting station of this utility model embodiment achieves triangular wiring cutting through at least three modules. The three layers of cutting lines intersect in a triangular pattern. Compared with a square intersection, the core yield is higher for the same side surface area. Under the same conditions, more silicon cores can be cut, thereby improving the cutting effect.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A wire EDM tool holder, characterized in that, It includes at least three sets of guide wheel modules, each set of guide wheel modules includes two guide wheels (1), and a cutting line (2) shuttles back and forth on the two guide wheels (1) to form a wiring layer for cutting. The cutting line (2) is configured to be horizontal wiring. The wiring layers formed by the guide wheel modules are staggered in the vertical direction and parallel to each other in the horizontal direction. The overlapping part of the vertical projection of the wiring layers of at least three sets of guide wheel modules forms multiple triangular cutting areas.

2. The wire EDM tool holder according to claim 1, characterized in that, It also includes wiring wheel sets, with each guide wheel corresponding to a wiring wheel set, and the two guide wheels (1) and the corresponding wiring wheel sets cooperate with each other to perform wiring.

3. The wire cutting tool holder according to claim 1 or 2, characterized in that, The cutting line (2) is at least two, of which at least one cutting line forms two wiring layers.

4. The wire cutting tool holder according to claim 2, characterized in that, Each of the wiring wheel sets is also equipped with an infeed wheel (3) and an outfeed wheel (4) located on the same side. The cutting wire (2) enters through the infeed wheel (3), passes through the wiring wheel set, and then exits through the outfeed wheel (4).

5. The wire EDM tool holder according to claim 3, characterized in that, The output wheel (4) of a set of wiring wheels is set adjacent to the input wheel (3) of the adjacent set of wiring wheels. A cutting line (2) is switched and wired through the adjacent output wheel (4) and input wheel (3) to form two wiring layers in series.

6. The wire EDM tool holder according to claim 1, characterized in that, The guide wheel includes a driving wheel (11) and a driven wheel (12) that cooperate with each other. Each guide wheel (1) has an even number of grooves, and all guide wheels (1) have the same number of grooves.

7. The wire EDM tool holder according to claim 1, characterized in that, The triangular cutting area includes multiple equilateral triangles.

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