WO2020221133A1

WO2020221133A1 - Multi-wire cutting device and automatic slot-change mechanism applied thereto

Info

Publication number: WO2020221133A1
Application number: PCT/CN2020/086749
Authority: WO
Inventors: 潘雪明; 钱春军; 卢建伟; 张峰; 裴忠
Original assignee: 天通日进精密技术有限公司
Priority date: 2019-04-30
Filing date: 2020-04-24
Publication date: 2020-11-05
Also published as: CN111844487A

Abstract

A multi-wire cutting device and an automatic slot-change mechanism (29) applied thereto. The automatic slot-change mechanism (29) comprises: a cutting wheel (290) comprising a first wire slot and a second wire slot which are used for winding cutting wires; a slot-change drum (292) linked to the cutting wheel (290) and comprising a drum body, and a first guide rail (293) and a second guide rail (294) formed on the drum body and communicated with each other, a gap between the first guide rail (293) and the second guide rail (294) corresponding to a slot pitch between the first wire slot and the second wire slot; and a positioning element (291) relatively and slidably provided in the first guide rail (293) or the second guide rail (294) and configured to slide in the first guide rail (293) or the second guide rail (294) to drive the slot-change drum (292) to rotate when the slot-change drum (292) moves axially, so that the cutting wire on the cutting wheel (290) is switched from the first wire slot to the second wire slot.

Description

Multi-wire cutting equipment and automatic slot changing mechanism applied to the multi-wire cutting equipment

Technical field

This application relates to the technical field of silicon rod processing, and in particular to a multi-wire cutting device and an automatic slot changing mechanism applied to the multi-wire cutting device.

Background technique

At present, with the society's attention and openness to the use of green and renewable energy, the field of photovoltaic solar power generation has received more and more attention and development. In the field of photovoltaic power generation, the usual crystalline silicon solar cells are made on high-quality silicon wafers, which are cut by a multi-wire saw after pulling or casting a silicon ingot. At present, multi-wire cutting technology is widely used in silicon rod cutting operations due to its high production efficiency, low operating cost, and high operating accuracy.

Multi-wire cutting technology uses a high-speed running cutting wire as a carrier to drive mortar particles to cut. Generally, multiple cutting wheels and transition wheels are configured in multi-wire cutting equipment. The cutting wire is wound on the slot of the cutting wheel and the slot of the transition wheel corresponding to the cutting wheel in turn to form multiple cutting line segments. The cutting line segment is to cut the silicon rod to be cut. After a long time of use, the wire groove on the cutting wheel will be worn out, which will affect the cutting effect. When the groove position of the cutting wheel needs to be replaced, the moving distance of the cutting wheel needs to be calibrated, and the moving distance usually needs to be measured by the staff And it is determined that not only the efficiency is low, but there is also the risk of accidental injury to the operator during operation.

Summary of the invention

In view of the shortcomings of the above-mentioned related technologies, the purpose of this application is to provide a multi-wire cutting device and an automatic slot changing mechanism applied to the multi-wire cutting device.

In order to achieve the above and other related purposes, the first aspect of this application discloses an automatic slot changing mechanism applied to a multi-wire cutting device, including: a cutting wheel, including a first wire slot for winding the cutting wire and The second slot; the slot changing cylinder, linked with the cutting wheel, is used to drive the cutting wheel to move along its axial direction to move the cutting line from the first slot to the adjacent second slot , Including a barrel body, and a first rail and a second rail communicating with each other opened on the barrel body, the drop between the first rail and the second rail corresponds to the difference between the first wire groove and the second wire groove The distance between the grooves; the positioning member is relatively slidably arranged in the first guide rail or the second guide rail, and is used to slide in the first guide rail or the second guide rail when the groove changing cylinder moves in the axial direction The slot changing cylinder is driven to rotate to force the cutting line on the cutting wheel to switch from the first slot to the second slot.

In some embodiments of the first aspect of the present application, the first guide rail has a first seating end, and the first seating end has a first distance from the first wire groove; the second guide rail has The second seating end, the second seating end and the second wire slot have a second distance; the first distance is equal to the second distance.

In some embodiments of the first aspect of the present application, there is a transition end between the first positioning end and the second positioning end.

In certain implementations of the first aspect of the present application, there is an upward section between the first seating end and the transition end, and the upward section has a side wall with a first slope; the transition end and the second There is a downward section between the landing ends, and the downward section has a side wall with a second slope.

In some implementations of the first aspect of the present application, the transition end has a first passage communicating with the upstream section, the transition end has a second passage communicating with the downward section, and the width of the first passage is It is smaller than the second channel mentioned above.

In some embodiments of the first aspect of the present application, the transition end is located in the second channel near the vertex of the cutting wheel.

In some embodiments of the first aspect of the present application, the automatic slot changing mechanism applied to the multi-wire cutting equipment further includes a driving device that drives the slot changing cylinder to telescopically move along its axial direction.

In some embodiments of the first aspect of the present application, the driving device includes a cylinder assembly or a screw assembly driven by a motor.

In some embodiments of the first aspect of the present application, the positioning member is fixedly connected to a fixing base connected to the multi-wire cutting device, and is used to set the positioning member in the first rail or the second rail .

In some embodiments of the first aspect of the present application, the fixing seat is configured as a cover sleeved with the groove changing cylinder.

The second aspect of the present application discloses a multi-wire cutting device, which includes: a silicon rod carrying table for supporting a single crystal silicon rod placed vertically; and a wire cutting device arranged above the silicon rod carrying table, It includes a plurality of cutting wheels and a cutting line with at least one cutting line segment formed around the plurality of cutting wheels; the automatic slot changing mechanism provided in the first aspect of the present application.

To sum up, in the multi-wire cutting equipment disclosed in the present application and the automatic groove changing mechanism applied to the multi-wire cutting equipment, the cutting wheel and the groove changing cylinder are linked, and the groove changing cylinder only needs to be driven to drive the cutting wheel along its axis The cutting line can be moved from the first slot of the cutting wheel to the adjacent second slot by moving to the opposite direction. The entire automatic slot changing process does not require manual intervention and the automatic slot changing operation is simple, which can ensure the slot position of the slot The adjustment is precise, and the work efficiency is improved.

Description of the drawings

Fig. 1 shows a schematic diagram of the overall structure of a multi-wire cutting device according to an embodiment of the present application.

Fig. 2 shows a schematic diagram of a worktable conversion mechanism as a rotating mechanism in an embodiment of the multi-wire cutting device of the present application.

Fig. 3a shows a schematic diagram of a state in which the worktable conversion mechanism is a translation mechanism in an embodiment of the multi-wire cutting device of the present application.

Fig. 3b shows another schematic diagram of the working table conversion mechanism as a translation mechanism in an embodiment of the multi-wire cutting device of the present application.

FIG. 4 shows a schematic structural diagram of a silicon rod loading and unloading device in an embodiment of the multi-wire cutting equipment of the present application.

Fig. 5 is a top view of Fig. 4.

FIG. 6 shows a cross-sectional view of the first clamp of the silicon rod loading and unloading device in an embodiment of the multi-wire cutting device of the present application.

FIG. 7 shows a schematic diagram of the first driving structure in an embodiment of the multi-wire cutting device of the present application.

FIG. 8 is a schematic diagram showing the structure of each cutting wheel group having a pair of cutting wheels in the wire cutting device in an embodiment of the multi-wire cutting device of the present application.

FIG. 9 shows a schematic diagram of the structure in which each cutting wheel group has two pairs of cutting wheels in the wire cutting device in an embodiment of the multi-wire cutting device of the present application.

Fig. 10 is a schematic side view of Fig. 9.

FIG. 11 shows a schematic diagram of the guide wheel winding in the case where each cutting wheel set has two pairs of cutting wheels in the wire cutting device in an embodiment of the multi-wire cutting device of the present application.

FIG. 12 is a schematic diagram showing the structure of the automatic slot changing mechanism used in the multi-wire cutting equipment in an embodiment of the present application in cooperation with the wire cutting device.

FIG. 13 shows a schematic cross-sectional structure diagram of an automatic slot changing mechanism used in a multi-wire cutting device according to this application.

Fig. 14 is a partial enlarged view of part B of Fig. 13.

Figures 15a to 15d show schematic structural diagrams of the movement process of the automatic slot changing mechanism used in the multi-wire cutting equipment of this application in an embodiment.

FIG. 16 is a schematic diagram showing the structure of a silicon rod pressing device in an embodiment of the multi-wire cutting device of the present application.

Fig. 17 is a schematic diagram showing the structure of the skin top support mechanism in an embodiment of the multi-wire cutting device of the present application.

Fig. 18 is a schematic diagram showing the structure of a side skin lifting mechanism in an embodiment of the multi-wire cutting device of the present application.

Fig. 19 is a partial enlarged view of part A in Fig. 2.

FIG. 20 is a schematic diagram showing the external structure of the edge skin clamping mechanism in an embodiment of the multi-wire cutting device of the present application.

21 is a schematic diagram showing a cross-sectional structure of a clamping assembly in an embodiment of the multi-wire cutting device of the present application.

Detailed ways

The following specific examples illustrate the implementation of this application. Those familiar with this technology can easily understand other advantages and effects of this application from the content disclosed in this specification.

In the following description, referring to the drawings, the drawings describe several embodiments of the present application. It should be understood that other embodiments can also be used, and mechanical, structural, electrical, and operational changes can be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is limited only by the claims of the published patent. The terms used here are only for describing specific embodiments, and are not intended to limit the application. Space-related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text for ease of explanation The relationship between one element or feature shown in the figure and another element or feature.

Although the terms first, second, etc. are used herein to describe various elements or parameters in some examples, these elements or parameters should not be limited by these terms. These terms are only used to distinguish one or parameter from another or parameter. For example, the first wire groove may be referred to as the second wire groove, and similarly, the second wire groove may be referred to as the first wire groove without departing from the scope of the various described embodiments. The first slot and the second slot are both describing a slot, but unless the context clearly indicates otherwise, they are not the same slot. The similar situation also includes the first guide rail and the second wire groove, or the first landing end and the second landing end.

Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to also include the plural forms, unless the context dictates to the contrary. It should be further understood that the terms "comprising" and "including" indicate the existence of the described features, steps, operations, elements, components, items, types, and/or groups, but do not exclude one or more other features, steps, operations, The existence, appearance or addition of elements, components, items, categories, and/or groups. The terms "or" and "and/or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . An exception to this definition will only occur when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way.

The existing single crystal silicon rods generally have a cylindrical structure. The silicon rods are squared by a multi-wire cutting device. After a long time of use, the wire groove on the cutting wheel of the multi-wire cutting device will be worn, which affects the cutting effect. When the slot position of the cutting wheel needs to be replaced, the moving distance of the cutting wheel needs to be calibrated. Generally, the moving distance needs to be measured and determined by the staff, which is not only inefficient, but also has the risk of accidentally injuring the operator during operation. Therefore, it is necessary to provide a multi-wire cutting device and an automatic slot changing mechanism applied to the multi-wire cutting device, so that automatic slot replacement can be realized, the adjustment accuracy in the slot changing line operation can be improved, and the work efficiency can be improved.

The multi-wire cutting device of the present application and the automatic slot changing mechanism applied to the multi-wire cutting device will be described in detail below in conjunction with embodiments and FIGS. 1 to 21.

Please refer to FIG. 1, which shows a schematic diagram of the overall structure of a multi-wire cutting device in an embodiment of this application. As shown in the figure, the multi-wire cutting device further includes a base 20, which is set for this application The main part of the multi-wire cutting equipment is used to provide a square-opening operation platform. Preferably, the volume and weight of the base 20 are relatively large to provide a larger mounting surface and a firmer overall machine stability.

The at least two silicon rod carrying platforms 21 are used to carry silicon rods placed vertically, each of the silicon rod carrying platforms 21 has a rotating mechanism 210, and the rotating mechanism 210 is used to drive the silicon rod carrying platform 21 The upper silicon rod rotates to adjust the surface to be cut. In an exemplary embodiment, the rotating mechanism 210 is configured as a rotating turntable located at the bottom of the silicon rod carrier 21, and the rotating turntable is controlled by a driving device (not shown). The driving device may be, for example, a driving device. The servo motor that rotates the turntable, but not limited to this. In an alternative embodiment, the rotating mechanism 210 may adopt a lifting design, that is, the rotating turntable at the bottom of the silicon rod bearing table 21 can be telescoped after being controlled to drive the silicon rod bearing table 21 to move up and down, thereby adjusting The height of the silicon rod to be cut on the silicon rod carrier 21.

In order to better protect the silicon rods to be cut on the silicon rod bearing platform, in an exemplary embodiment, the supporting surface of each silicon rod bearing platform 21 (the supporting surface is the upper surface of the silicon rod bearing platform for A buffer pad is fixed on the supporting silicon rod to be cut, so that the buffer pad is located between the silicon rod supporting table 21 and the silicon rod to be cut when the silicon rod to be cut is placed.

In one embodiment, referring to FIG. 1, the at least two silicon rod carrying platforms 21 are directly arranged on the machine base and arranged in a straight line at intervals in the cutting area. When the at least two silicon rod carrying platforms 21 After supporting the silicon rods to be cut, the centers of the supporting silicon rods to be cut are located on the same straight line (as shown in Figure 1). It is easy to understand that the cutting area is performed by a multi-wire cutting device. The area where the silicon rod is cut, specifically, the cutting area is, for example, an area under the cutting device in a multi-wire cutting device.

In practical applications, in order to improve work efficiency, so that the multi-wire cutting equipment can perform cutting work and loading and unloading work at the same time, please refer to FIG. 2, which shows that the worktable conversion mechanism in an embodiment of the multi-wire cutting equipment of this application is a rotating mechanism In a schematic diagram, as shown in the figure, in another embodiment, the at least two silicon ingot carrying platforms 21 may be arranged on the silicon ingot worktable 22, and the silicon ingot worktable 22 is provided with a worktable conversion mechanism 220, It is used to drive the silicon ingot worktable 21 to make a conversion movement so that the silicon ingot carrier on the silicon ingot worktable 21 is converted between the loading and unloading area and the cutting area. It is easy to understand that the loading and unloading area is more The area where the wire cutting equipment performs loading and unloading is specifically, for example, the areas corresponding to the two sides of the silicon rod table in the multi-wire cutting equipment, and the cutting area is the area where the silicon rods to be cut are cut on the multi-wire cutting equipment. The area, for example, is the area below the cutting device in the multi-wire cutting equipment.

In this embodiment, the silicon ingot workbench 22 is set on the machine base 20 and is set as at least one, and each silicon ingot workbench 22 is provided with at least two silicon rod bearing platforms 21, and each silicon rod workbench 22 is At least one silicon rod carrier 21 is located in the cutting area, at least one silicon rod carrier 21 is located in the loading and unloading area, and the silicon rod supporting platforms 21 located in the cutting area on each silicon rod workbench 22 are sequentially in a straight line They are arranged sequentially at intervals, so that when the silicon rods to be cut are supported by each silicon rod carrier 21 located in the cutting area, the centers of the supported silicon rods to be cut are on the same straight line. In an exemplary embodiment, referring to FIG. 2, two silicon ingot workbenches 22 are provided on the machine base, and four silicon ingot carrier platforms 21 are provided on each silicon ingot workbench 22, and each silicon ingot workbench 22 is Two of the silicon ingot loading platforms 21 are located in the cutting area, the other two silicon ingot loading platforms 21 are located in the loading and unloading area. The lines are arranged sequentially and spaced in sequence, but not limited to this. In other exemplary embodiments, the silicon rod worktable 22 may also be provided with one or more.

In an exemplary embodiment, please refer to FIG. 2, as shown in the figure, the worktable conversion mechanism 220 is a rotating mechanism, and the rotating mechanism includes a rotating shaft 2200 and a rotating drive unit (not shown). The rotating shaft 2200 is axially connected to the silicon ingot worktable 22 for driving the rotating shaft 2200 to rotate to drive the silicon ingot worktable 22 to rotate. In this embodiment, the rotating shaft 2200 is arranged in the central area of the bottom of the silicon rod table 22 and connected to the base 20. The silicon rod bearing table 21 located in the cutting area and the silicon rod bearing table 21 located in the loading and unloading area rotate relative to each other. The shaft 2200 is centrally symmetric, so that the silicon ingot table 22 can be driven to rotate so that the silicon ingot carrier 21 on the silicon ingot table 22 can be switched between the cutting area and the loading and unloading area. It should be noted that in the embodiment where the worktable conversion mechanism 220 is set as a rotating mechanism, the loading and unloading is performed on one side of the multi-wire cutting equipment. In actual operations, the silicon rods are to be loaded and unloaded in the cutting area and the loading and unloading area. For conversion, firstly, the drive unit (such as a common drive motor) drives the rotating shaft 2200 to drive the silicon ingot table 22 to rotate (for example, 180°), so that the silicon ingot carrier 21 originally located in the cutting area is transferred to the loading and unloading area for unloading and loading The new material makes the silicon rod bearing table 21 originally located in the loading and unloading area switch to the cutting area for cutting. Such a cycle enables the multi-wire cutting equipment of the present application to perform cutting work and loading and unloading work at the same time, which improves work efficiency. In other embodiments, the rotating mechanism for driving the silicon ingot worktable to rotate may also adopt other methods. For example, the rotating mechanism may also be geared, specifically, a transmission wheel is provided at the bottom of the silicon ingot worktable. A driving wheel meshing with the transmission wheel is provided on the base 20, and the driving wheel is controlled by a rotating drive motor. The driving motor drives the driving wheel to rotate to drive the driven wheel to rotate, so that the silicon rod table 22 follows The driven wheel rotates to drive the silicon rod carrier 21 to switch between the loading and unloading area and the cutting area.

In another exemplary embodiment, please refer to FIGS. 3a and 3b. FIG. 3a shows a schematic diagram of a state in which the worktable conversion mechanism is a translation mechanism in an embodiment of the multi-wire cutting device of this application, and FIG. 3b shows this application Another state schematic diagram of the multi-wire cutting device in an embodiment of the worktable conversion mechanism is the translation mechanism. As shown in the figure, the table conversion mechanism 220 is a translation mechanism, and the translation mechanism includes a translation guide rail 2201, a slider 2202 and a translation drive unit (not shown). The translational guide rail 2201 is laid on the base 20, and the sliding block 2202 is provided at the bottom of the silicon ingot worktable 22 and is adapted to the translational guide rail 2201 to provide translational guidance for the silicon ingot worktable 22. The translation drive unit is used to drive the silicon rod table 22 to move along the translation guide rail 2201 (in the direction of the arrow in Figures 3a and 3b) so that the silicon rod carrier 21 on the silicon rod table 22 is at The cutting zone and the loading and unloading zone are switched, and the translation drive unit adopts a cylinder assembly or a screw assembly driven by a motor. It should be noted that in the embodiment where the worktable conversion mechanism 220 is a translation mechanism, loading and unloading are performed on both sides of the multi-wire cutting equipment. In actual operations, the silicon rods located in the cutting area on the silicon rod worktable After the silicon rods carried by the carrying table 21 are cut and the silicon rod carrying table 21 in the loading and unloading area on one side has been loaded with the silicon rods to be cut (as shown in Figure 3a), the translation drive unit drives the silicon rod table 22 to slide along The rail X direction (in the direction of the arrow in Figure 3a) advances so that the silicon rod carrier 21 located in the cutting area carries the cut silicon rods and moves to the other side loading and unloading area for unloading and loading the silicon rods to be cut, while loading and unloading on one side The silicon rod carrying table 21 in the area carries the silicon rod to be cut and moves to the cutting area for cutting the silicon rod to be cut (shown in the state shown in Figure 3b), and then the translation drive unit drives the silicon rod worktable 22 to retreat along the slide rail (shown as The direction of the arrow in Figure 3b) makes the silicon ingot carrier 21 loaded with silicon ingots to be cut on the other side return to the cutting area for cutting operations, while the silicon ingot carrier 21 that has completed the cutting operation in the cutting area returns to one side for loading and unloading The area continues to unload and load the silicon rods to be cut (shown as position 3a in the figure). Such reciprocation enables the multi-wire cutting equipment of the present application to simultaneously perform cutting and loading and unloading tasks, and the work efficiency is significantly improved. In other embodiments, the translation mechanism may also be geared. Specifically, the translation mechanism includes a translation rack and a rotating gear that is driven by a motor and adapted to the translation rack. The translation gear The rail is arranged at the bottom of the silicon rod worktable, and may be, for example, at least one rack with a certain length. In order to make the silicon rod worktable move smoothly, each rack is fitted with at least two rotating gears arranged at intervals. The rotating gear is driven to rotate to drive the silicon ingot worktable to move so that the silicon ingot carrying table on the silicon ingot worktable is switched between the cutting area and the loading and unloading area.

It needs to be supplemented that, in order to facilitate the loading and unloading operations of the silicon rods, the multi-wire cutting equipment of the present application further includes a silicon rod loading and unloading device, the silicon rod loading and unloading device is adjacent to the silicon rod bearing platform, and further, the silicon rod loading and unloading The device is arranged on one side or opposite sides of the silicon rod worktable, and is used to load the silicon rods to be cut located in the holding area on the silicon rod bearing platform located in the loading area on the silicon rod workbench so that the silicon rod workbench The silicon rods to be cut are sent to the cutting area for cutting, and the cut silicon rods transferred from the cutting area to the loading and unloading area by the silicon rod worktable are transferred to the holding area to unload the cut silicon rods. In one embodiment, the silicon rod loading and unloading device is arranged on one side of the silicon rod worktable, and the worktable conversion mechanism of the silicon rod worktable is the above-mentioned rotating mechanism at this time. The silicon rods are loaded and unloaded on one side; in another embodiment, the silicon rod loading and unloading devices are arranged on both sides of the silicon rod worktable, and the worktable conversion mechanism of the silicon rod worktable is as described above. The translation mechanism is used for loading and unloading silicon rods on both sides of the silicon rod worktable. It is easy to understand that the storage area is an area adjacent to the multi-wire cutting device and used to place or store the silicon rods to be cut and the silicon rods that have been cut.

Please refer to FIGS. 4 to 6. FIG. 4 shows the structure diagram of the silicon rod loading and unloading device in an embodiment of the multi-wire cutting device of the present application, FIG. 5 shows the top view of FIG. 4, and FIG. 6 shows the multi-wire cutting device of this application. A cross-sectional view of the first clamp of the silicon rod loading and unloading device in an embodiment of the device. As shown in the figure, the silicon rod loading and unloading device is arranged on a bottom mounting structure, and the bottom mounting structure is protruding from the machine base. The silicon rod unloading device includes a reversing carrier 230, a first clamp, and a second clamp. The reversing carrier 230 is used for reversing movement. The first and second clamps are arranged on the reversing carrier. 230. By driving the reversing carrier to perform a reversing movement, the first clamp and the second clamp arranged on the reversing carrier 230 can be switched between the storage area and the loading and unloading area to transfer and hold the cut silicon rod and the waiting area. Cutting silicon rod.

The reversing carrier 230 is arranged on the bottom mounting structure and can perform reversing movement relative to the bottom mounting structure. In one embodiment, the reversing carrier 230 realizes reversing movement through a reversing mechanism. The reversing mechanism may include a rotating shaft and a reversing motor, and the reversing carrier 230 is connected to the bottom mounting structure thereunder through the rotating shaft. When the steering movement is implemented, the reversing motor is activated to drive the rotating shaft to rotate to drive the reversing carrier 230 to rotate to realize the reversing movement. The aforementioned driving shaft rotation can be designed as a one-way rotation or a two-way rotation, the one-way rotation can be, for example, a clockwise rotation or a counterclockwise rotation, and the two-way rotation can be, for example, a clockwise rotation and a counterclockwise rotation. In addition, the angle at which the rotating shaft is driven can be set according to the actual structure of the silicon rod loading and unloading device. The actual structure of the silicon ingot loading and unloading device may be, for example, the angle at which the rotating shaft rotates according to the distance between the storage area and the loading area. Or the structure of the reversing carrier 230. The center position of the reversing base in the reversing carrier 230 is connected to the rotating shaft. Generally, the shape of the reversing base can be a disk structure, but it is not limited to this, and it can also be a square disk or an oval disk. The first clamp is set in the first clamp area of the reversing carrier 230 for clamping the silicon rod to be cut, and the second clamp is set in the second clamp area of the reversing carrier 230 for holding Cutting the silicon rod. In an embodiment, the first clamping area and the second clamping area can be set according to the actual device structure. For example, the first clamping area and the second clamping area are two locations that are set back in the reversing carrier 230 Further, the first clamping area and the second clamping area can be 180° apart, so that the storage area and the loading and unloading area are connected in a line (of course, it can also be understood that: the storage area and the loading and unloading area are connected in a line and are located on the reversing carrier. Therefore, the first clamp area used to set the first clamp and the second clamp area used to set the second clamp in the reversing carrier 230 can be different by 180°). In this way, when the reversing load After the tool 230 is rotated by 180°, the first clamp and the second clamp can exchange positions. However, in practical applications, the setting relationship between the first clamping area and the second clamping area or the loading and unloading station and the working station is not so demanding. The first clamping area and the second clamping area can also be different by 90°, for example. Furthermore, the first clamp area and the second clamp area may be different from any position within a suitable range, as long as there is no unnecessary interference between the first clamp area and the second clamp area.

The first clamp further includes a first clamp mounting member 231 and at least two first clamping members 232, wherein the at least two first clamping members 232 are spaced apart from the first clamp mounting member 231 for clamping the Cutting the silicon rod. In one embodiment, the aforementioned silicon rods to be cut on the silicon rod carrier are placed upright, therefore, at least two first clamping members 232 are vertically spaced apart from the first clamp mounting member 231, that is, At least two first clamping members 232 are arranged up and down.

In terms of specific implementation, any of the first clamping members 232 further includes: a first clamping arm mounting seat 2320 and at least two first clamping arms 2321, wherein the first clamping arm mounting seat 2320 is installed on the first clamp On the member 231, at least two first clamping arms 2321 are movably arranged on the first clamping arm mounting seat 2320. In view of the circular cross-section of the silicon rod to be cut, in an alternative embodiment, the first clamping member 232 is a circular workpiece clamp as a whole, and the first clamping arm 2321 constituting the first clamping member 232 is symmetrical Two designed, a single first clamping arm 2321 is designed to have an arc-shaped clamping surface. Preferably, the arc-shaped clamping surface of a single first clamping arm 2321 is more than a quarter of the arc, so that the two The arc clamping surface of the first clamping member 232 formed by the first clamping arms 2321 is more than half of the arc. Of course, the curved clamping surface of the first clamping arm 2321 can be additionally provided with a buffer pad to avoid damage to the surface of the silicon rod to be cut during the process of clamping the silicon rod to be cut, and to protect the silicon rod to be cut. Great results. Generally, when the first clamping arm 2321 of the first clamping member 232 is in the clamping state, the center of the clamping space formed by the two first clamping arms 2321 coincides with the center of the silicon rod to be cut. Therefore, when the first clamping member 232 is used to clamp the silicon rod to be cut standing upright in the storage area, the two first clamping arms 2321 in the first clamping member 232 contract, and the first clamping arm 2321 The arc-shaped clamping surface abuts against the silicon rod to be cut. When the first clamping arm 2321 contracts and clamps the silicon rod to be cut, the silicon rod to be cut is pushed by the two first clamping arms 2321 on both sides and moves toward the central area of the clamping space until the silicon rod to be cut is The two first clamping arms 2321 in the first clamping member 232 are clamped. At this time, the center of the silicon rod to be cut can be located at the center of the clamping space of the first clamping member 232.

In order to enable at least two first clamping arms 2321 of the first clamping member 232 to smoothly and firmly clamp single wafer silicon rods of different sizes, the first clamping member 232 further includes a first clamping arm driving mechanism , Used to drive at least two first clamping arms 134 to open and close.

Please refer to FIG. 6, as shown in the figure, in specific implementation, the first clamping arm driving mechanism further includes: a first opening and closing gear 2322, a first gear driving member 2323, and a first driving source 2324. The first opening and closing gear 2322 is arranged on the corresponding first clamping arm 2321. The first gear driving member 2323 has a tooth pattern meshing with the first opening and closing gear 2322 on the first clamping arm 2321. The first driving source 2324 is connected to the first gear driving member 2323 for driving the first gear driving member 2323 to move. In one implementation, the first gear driving member 2323 is a first rack, the first rack is located in the middle of the two first clamping arms 2321, and the first clamping arms of the first rack facing on both sides respectively The two outer surfaces of 2321 are respectively provided with tooth patterns corresponding to the first opening and closing gears 2322 on the two first clamping arms 2321, and the first driving source 2324 may be, for example, a driving motor or a cylinder. In this way, according to the above implementation, in practical applications, when the first clamping arm 2321 needs to be clamped, the first rack as the first gear driver 2323 is driven upward by the driving motor or the air cylinder as the first driving source 2324. To move, the first opening and closing gear 2322 meshed on both sides is driven by the first rack to make an external rotation. The first opening and closing gear 2322 drives the first clamping arm 2321 during the external rotation (the first opening and closing gear 2322 and the first clamping arm 2321 can be lowered through the shaft connection) to switch from the loosening state to the clamping state; on the contrary, when the first clamping arm 2321 needs to be loosened, it is driven by the drive motor (or cylinder) as the first drive source 2324. The first rack of the first gear driving member 2323 moves downward, and the first opening and closing gear 2322 meshed on both sides is driven by the first rack to perform internal rotation. The first opening and closing gear 2322 drives the first clamp during internal rotation. The arm 2321 (the first opening/closing gear 2322 and the first clamping arm 2321 can be connected by a rotating shaft) performs an upward movement to turn from the clamping state to the releasing state. Of course, the foregoing is only an embodiment, and is not used to limit the working state of the first clamping member 232. In fact, the aforementioned "upward", "external rotation", "downward", "downward" and "internal rotation" "," "up", and "released" and "clamped" state changes can be changed according to the structure and operation mode of the first clamp arm 2321, and the structure of the first clamp arm drive mechanism.

As those skilled in the art know, the silicon rods to be cut are formed by cutting the original long silicon rods, which will inevitably make the size difference between the silicon rods to be cut very different. In view of the fact that the first clamp is used for Clamp the silicon rod to be cut in the upright state. Therefore, for the first clamp, the influence of the aforementioned size difference is mainly reflected in the difference in the length of the silicon rod to be cut on the first clamp in the first clamp. Whether the holding member 232 can hold the silicon rod to be cut corresponding to the hidden worry.

In order to reduce or even avoid the risk that the first clamping member 232 may not be able to clamp the silicon rod to be cut, the first clamp has different design solutions.

In an implementation manner, the first clamp adopts a fixed clamping member, that is, as many first clamping members 232 are fixed vertically on the reversing carrier 230, and these first clamping members The distance between two adjacent first clamping members 232 in the member 232 is as small as possible, so that the use of these first clamping members can cover silicon rods to be cut of various specifications and lengths. For example, if the length of the silicon rod to be cut is longer, the more first clamping members 232 on the reversing carrier 230 are used for clamping; if the length of the silicon rod to be cut is shorter, the reversing carrier 230 is used The fewer first clamping members 232 participate in the clamping, for example, several first clamping members 232 located below participate in the clamping, and the first clamping members located above and higher than the silicon rod to be cut 232 does not participate.

In other implementations, the first clamp adopts a movable clamp, that is, the first clamp 232 is vertically movably arranged on the first clamp area of the reversing carrier 230, because the first clamp It is a movable design, therefore, the number of the first clamping members 232 can be greatly reduced, and generally two or three are sufficient. In this way, the use of movable clamps can cover silicon rods to be cut of various specifications and lengths. For example, if the length of the silicon rod to be cut is longer, move the movably arranged first clamping member 232 to extend the clamping distance between the two first clamping members 232; if the length of the silicon rod to be cut is shorter, move The movably arranged first clamping member 232 shortens the clamping distance between the two first clamping members 232. In the implementation of the movable clamp in the first clamp, in order to facilitate the smooth and stable movement of the movable clamp up and down to adjust the position, the first clamp mounting part 231 in the first clamp can be used to guide the movable setting. The guiding function of the first clamping member 232 can be realized in a manner that the first clamp mounting member 231 can adopt a guide post structure, and the first clamp arm mounting seat 2320 can adopt a movable block structure sleeved on the guide post structure. Specifically, the guide column structure as the first clamp mounting member 231 includes two guide columns arranged vertically and in parallel, and the movable block structure as the first clamp arm mounting seat 2320 is provided with the guide column Two through holes or two clips corresponding to the two guide posts in the structure. If a through hole is used, the movable block is sleeved on the guide post and can slide along the guide post. If a clip is used, the movable block can be clipped to the guide post and can slide along the guide post. In practical applications, the clip can be clipped to at least half of the guide post section.

In order to realize the movement of the first clamping member 232, the movable design of the first clamping member 232 may be provided with a first guiding and driving mechanism. The first guide driving mechanism can drive the movable first clamping member 232 to move up and down along the first clamp mounting member 231. In an implementation manner, the first guide driving mechanism may include, for example, a first guide screw 2325 and a first guide motor 2326, wherein the first guide screw 2325 is arranged upright, and one end of the first guide screw 2325 is connected On the first clamp arm mounting seat 2320, the other end of the first guide screw 2325 is connected to the first guide motor 2326. The first guide motor 2326 can be arranged on the top of the reversing carrier 230, but is not limited to this. .

In another alternative embodiment, the two first clamping members 232 are both movable in design, so that in practical applications, they can be adjusted by the movement of the two first clamping members 232 of movable design. The clamping distance between each other. Since the first clamping member 232 is a movable design, at least one of the two first clamping members 232 needs to be provided with a first guide driving mechanism for driving the two first clamping members 232 moves along the first clamp mounting part 231. Compared with the previous alternative embodiment, in this alternative embodiment, since the two first clamping members 232 in the first clamp are both movable, the first guide driving mechanism can be arranged in the two second On one of the clamping members 232, or on the two first clamping members at the same time.

Now take as an example that the first clamping member 232 above the two first clamping members 232 is provided with a first guide driving mechanism. In this case, first, the first of the two first clamping members 232 A clamp arm mounting seat 2320 and the first clamp mounting member 231 are movably connected, that is, the first clamp arm mounting seat 2320 and the first clamp arm 2321 on any one of the first clamp members 232 are along the first The clamp mounting member 231 can move up and down. In addition, the first guide driving mechanism provided includes a first guide screw 2325 and a first guide motor 2326. One end of the first guide screw 2325 is connected to the upper first clamping member. On the first clamp arm mounting seat 2320 in 232, the other end of the first guide screw 2325 is connected to the first guide motor 2326, and the first guide motor 2326 can be arranged on the top of the reversing carrier 230. In this way, when the position of the upper first clamping member 232 needs to be adjusted, the first guide motor 2326 drives the first guide screw 2325 to rotate, and the first guide screw 2325 drives the first clamping member 232 along the The first clamp mounting member 231 moves up and down. For example, the first guide motor 2326 drives the first guide screw 2325 to rotate clockwise, which drives the upper first clamping member 232 to move upward along the first clamp mounting member 231 to move away from below The first clamping member 232 increases the clamping distance between the two first clamping members 232; the first guide motor 2326 drives the first guide screw 2325 to rotate in the reverse direction, and then drives the upper first clamping member 232 along As the first clamp mounting member 231 moves downward to approach the first clamping member 232 below, the clamping distance between the two first clamping members 232 is reduced. In this way, by controlling the movable design of the first clamping member 232, the clamping distance between the two first clamping members 232 can be adjusted, thereby effectively clamping the silicon rods 101 to be cut with different specification lengths.

In fact, when the two first clamping members 232 are of movable design, the first guide driving mechanism can not only adjust the clamping distance between the two first clamping members 232, to adjust the length of different specifications. In addition to the effective clamping of the silicon rod 101 to be cut, the purpose of lifting and lowering the silicon rod 101 to be cut can also be realized. After the two first clamping members 232 effectively clamp the silicon rod 101 to be cut, the drive The first clamping member 232 moves up and down to lift the silicon rod 101 to be cut. Specifically, still taking the upper first clamping member 232 provided with the first guide driving mechanism as an example, first, the upper first clamping member 232 moves up and down along the first clamp mounting member 231 through the first guide driving mechanism. The clamping distance with the lower first clamping member 232 is adjusted; then, the first clamping arm drive mechanism in each first clamping member 232 is used to drive the corresponding two first clamping arms 2321 for clamping action To smoothly and firmly clamp the silicon rod 101 to be cut; then, the upper first clamping member 232 is driven by the first guide driving mechanism to move upward along the first clamp mounting member 231. At this time, due to friction Function, the clamped silicon rod 101 to be cut and the lower first clamping member 232 move upward together, wherein the clamped silicon rod 101 to be cut moves upward using the upper first clamping member The friction force between 232 and the silicon rod 101 to be cut, the upward movement of the first clamping member 232 utilizes the friction force between the silicon rod 101 to be cut and the first clamping member 232 below, so as to achieve lifting The effect of the silicon rod 101 to be cut. The upper first clamping member 232 is driven by the first guide driving mechanism to drive the silicon rod 101 to be cut and the first clamping member 232 below it to move downward in the same process, so as to realize the lowering of the silicon rod 101 to be cut. The effect will not be repeated here.

It should be noted that in other variations, for example, a first guide driving mechanism is provided on the lower first clamping member 232 of the two first clamping members 232, the structure and arrangement of the first guide driving mechanism and The driving mode is similar to the first guide driving mechanism of the upper first clamping member 232, for example, the lower first clamping member 232 is driven by the first guide driving mechanism up and down along the first clamp mounting member 231 Move to adjust the clamping distance with the upper first clamping member 232, and the lower first clamping member 232 is driven by the first guide driving mechanism to drive the to-be-cut silicon rod 101 and the upper first clamping The pieces 232 move up and down along the first jig mounting piece 231 together. For another example, the two first clamping members 232 are provided with a first guide driving mechanism, the setting mode and driving mode of the first guide driving mechanism and the movement mode of the two first clamping members 232 need not be mentioned here. No longer.

In the case that the movable first clamping member 232 moves up and down along the first clamp mounting member 231 to adapt to the silicon rods to be cut of different specifications and lengths for clamping, except that the first clamping member 232 uses movable In addition to the structure design, the first clamping member 232 needs to be provided with a first guiding drive mechanism, etc., it is bound to know the specification length of the silicon rod to be cut that needs to be clamped currently. In view of this, the workpiece transfer device in the present application may also include a height detector (not shown in the figure) for the height of the silicon rod to be cut that is placed upright, so as to serve as a movable first clamp The member 232 subsequently moves upward or downward along the first fixture mounting member 231 and the basis of the moving distance.

In view of the fact that the second clamp is arranged in the second clamp area and is used to clamp the cut silicon rod, the cross-section of the cut silicon rod in this application is rectangular, so the structure of the second clamp is similar to that of the first clamp. The structure is the same, including a second clamp mounting member 233 and at least two second clamping members 234. Any second clamping member 234 further includes: a second clamping arm mounting seat 2340 and at least two second clamping arms 2341, wherein , The second clamping arm mounting seat 2340 is arranged on the second clamp mounting member 233, and at least two second clamping arms 2341 are movably arranged on the second clamping arm mounting seat 2340. The only difference is that the second clamp of the second clamp is a square workpiece clamp as a whole. Specifically, the second clamp arms 2341 that make up the second clamp 234 are two symmetrically designed, a single second clamp The arm 2341 is designed to have a single straight clamping surface (see FIG. 4 and FIG. 5), and other structures of the second clamp are not described here.

Please refer to FIG. 2, as shown in the figure, the wire cutting device is arranged above the at least two silicon rod carrying tables 21 for cutting silicon rods to be cut. In one embodiment, the wire cutting device It includes a cutting frame 24 and a wire cutting unit 25. The wire cutting unit 25 is supported by the cutting frame 24 above the at least two silicon rod bearing tables 21, and the cutting frame 24 is fixed to the base 20 on.

In one embodiment, the cutting frame 24 includes two supporting columns 240 arranged opposite to each other, and a mounting frame 241 straddling opposite sides of the two supporting columns. The mounting frame 241 is used to place the wire cutting unit. 25 is driven by the first drive mechanism to rise and fall to perform cutting operations. In order to provide the wire cutting unit 25 with upward and downward direction guidance, lifting rails 242 are provided on opposite sides of the two support columns. The frame 241 is provided with a sliding block (not given reference numerals) matching the lifting rail 242, and the first driving mechanism drives the mounting frame 241 to drive the wire cutting unit 25 to rise and fall along the lifting rail 242 to perform Cutting operation of silicon rods to be cut.

In an embodiment, the first driving mechanism is configured as a cylinder assembly or a screw assembly. Please refer to FIG. 7, which shows a schematic diagram of the first driving structure in an embodiment of the multi-wire cutting device of the present application. As shown in the figure, the first driving mechanism is configured as a screw assembly, and the screw assembly includes A rod 243 and a motor 244. One end of the screw rod 243 is connected to the mounting frame 241, and the other end is connected to the motor 244 and driven by the motor 244 to drive the mounting frame 241 up and down. However, it is not limited to this. In other embodiments, the first driving mechanism may also be a cylinder assembly.

Please refer to FIG. 2, as shown in the figure, the wire cutting unit 25 includes a plurality of cutting wheel sets 251 corresponding to the number of the silicon rod bearing tables 21, and each cutting wheel set 251 includes a pair of cutting wheels or two pairs of cutting wheels, A cutting line segment is formed between two cutting wheels in any pair of cutting wheels, and a transition wheel 252 is provided between two adjacent cutting wheel sets 251. The wire groove of the transition wheel 252 is connected to the cutting wheel set 251. The grooves of the cutting wheel are in the same plane. In order to be able to simultaneously perform cutting operations of multiple silicon rods to be cut, in this embodiment, the number of the multiple cutting wheel sets 251 is the same as the number of silicon rod holders 21 located in the cutting area and corresponds to each other one to one. In this way, during the cutting operation, each cutting wheel set 251 cuts the silicon rods to be cut on the corresponding silicon rod carrier 21.

In view of the complicated spatial layout of the cutting wheel of the existing wire cutting device, a large number of transition wheels need to be used to change the direction of the cutting wire, which makes the winding complicated, the open equipment occupies a large space, and the manufacturing cost is high. Therefore, in one embodiment, As shown in FIG. 2, the plurality of cutting wheel sets 251 are arranged on the mounting frame 241 in a linear manner.

In one case, each cutting wheel set includes a pair of cutting wheels, a pair of cutting wheels in each cutting wheel set are sequentially arranged on the same side of the mounting frame, and a pair of cutting wheels in two adjacent cutting wheel sets There is only one transition wheel to guide the cutting line so that a cutting line segment is formed between the two cutting wheels in each pair of cutting wheels, and the wire groove of the transition wheel and the wire groove of the cutting wheel in the adjacent cutting wheel group Located in the same plane, so that the cutting line segments between the two cutting wheels of each cutting wheel set are located on the same straight line. Preferably, the length of each formed cutting line segment is slightly larger than the diameter of the cross-sectional circle of the silicon rod to be cut.

Please refer to FIG. 8, which shows a schematic structural diagram of a pair of cutting wheels in each cutting wheel group in the wire cutting device in an embodiment of the multi-wire cutting device of the present application, and the wire cutting unit in the figure includes four cutting wheel groups as an example For winding description, the four cutting wheel groups are respectively the first cutting wheel group 251a, the second cutting wheel group 251b, the third cutting wheel group 251c, and the fourth cutting wheel group 251d. A first transition wheel 252a is provided between the two cutting wheel groups 251b, a second transition wheel 252b, a third cutting wheel group 251c and a fourth cutting wheel group are provided between the second cutting wheel group 251b and the third cutting wheel group 251c. A third transition wheel 252c is arranged between 251d, and a single continuous cutting line is used to sequentially wind a pair of cutting wheels of the first cutting wheel set 251a, thereby forming a first cutting wheel on the pair of cutting wheels of the first cutting wheel set 251a. A cutting line segment L10 is then wound around the first transition wheel 252a to guide the cutting line, and then the pair of cutting wheels of the second cutting wheel set 251b are sequentially wound, forming a first cutting wheel on the pair of cutting wheels of the second cutting wheel set 251b. The two cutting line segments L20 are then guided around the second transition wheel 252b to guide the cutting line, and then are sequentially wound around the pair of cutting wheels of the third cutting wheel set 251c, and the first cutting wheel is formed on the pair of cutting wheels of the third cutting wheel set 251c. The three cutting line segments L30 are finally routed around the third transition wheel 252c to guide the cutting line, and then sequentially wound on a pair of cutting wheels of the fourth cutting wheel set 251d to form a fourth cutting line segment L40 and then exit. In this case, the wire cutting unit performs a down-cutting process, which can simultaneously complete the cutting of one axis section of the four silicon rods to be cut. In completing a square extraction operation, the cutting process of four axis sections is required. To complete the cutting of a shaft section, the silicon ingot carrier 21 needs to be rotated (90 degrees each time) through the rotation mechanism 210 of the silicon ingot carrier 21 to adjust the to-be-cut surface of the silicon ingot to be cut. Ensure that the squared silicon rod is in the shape of a rectangular parallelepiped. The intersection of the cutting line when the wire cutting unit performs four single-axis cuts on the silicon rod is located within the cross-sectional circle of the silicon rod to be cut (including the case where the intersection is located on the circumference of the cross-sectional circle) ).

In another case, each cutting wheel set includes two pairs of cutting wheels, the two pairs of cutting wheels in each cutting wheel set are respectively arranged on opposite sides of the mounting frame, and the mounting frame is also provided with a guide wheel set Reversing the cutting line to guide the cutting line from the cutting wheel on one side of the mounting frame to the cutting wheel on the other side of the mounting frame. A transition wheel set is provided between two adjacent cutting wheel sets to guide the cutting line , The transition wheel set includes two transition wheels, one of which guides a pair of cutting wheels in two adjacent cutting wheel sets, and the other transition wheel pair is the other pair of two adjacent cutting wheel sets The cutting wheel is guided so that a cutting line is formed between the two cutting wheels in any pair of cutting wheels, and the wire groove of the transition wheel on the same side and the wire groove of the cutting wheel are located in the same plane to make multiple cutting wheel sets The cutting line segments between the two cutting wheels located on the same side are located on the same straight line. Preferably, the length of each formed cutting line segment is slightly larger than the diameter of the cross-sectional circle of the silicon rod to be cut.

Please refer to FIGS. 9-11. FIG. 9 shows a schematic diagram of the structure in which each cutting wheel group has two pairs of cutting wheels in the wire cutting device in an embodiment of the multi-wire cutting device of the present application, and FIG. 10 shows the side structure of FIG. 9 Schematic diagram, FIG. 11 shows a schematic diagram of the guide wheel winding in the case where each cutting wheel set has two pairs of cutting wheels in the wire cutting device in an embodiment of the multi-wire cutting device of the present application. The wire cutting device in the figure includes four cutting wheel sets as an example for winding description. The four cutting wheel sets are the first cutting wheel set 251a, the second cutting wheel set 251b, the third cutting wheel set 251c, and the second cutting wheel set. Four cutting wheel groups 251d, a first transition wheel group is provided between the first cutting wheel group 251a and the second cutting wheel group 251b, and a second transition wheel group is provided between the second cutting wheel group 251b and the third cutting wheel group 251c Group, there is a third transition wheel group between the third cutting wheel group 251c and the fourth cutting wheel group 251d. Since the cutting line is a single continuous cutting line, there is also a guide wheel group 253 between the two sides of the mounting frame The direction of the cutting line is reversed to guide the cutting line from the cutting wheel on one side of the mounting frame 241 to the cutting wheel on the other side of the mounting frame 241. The cutting line is wound from one side of the mounting frame, and the cutting line is sequentially wound around the pair of cutting wheels 251a' of the first cutting wheel set 251a, thereby forming the first cutting wheel 251a' of the first cutting wheel set 251a. A cutting line segment L11 is then passed around a transition wheel 252a' in the first transition wheel group to guide the cutting line, and then sequentially wound around a pair of cutting wheels 251b' of the second cutting wheel group 251b. A second cutting line segment L21 is formed on a pair of cutting wheels 251b' of the group 251b, and then a transition wheel 252b' in the second transition wheel group is passed around to guide the cutting line, and then a third cutting wheel group 251c is sequentially wound. For the cutting wheel 251c′, a third cutting line segment L31 is formed on a pair of cutting wheels 251c′ of the third cutting wheel group 251c, and finally a transition wheel 252c′ in the third transition wheel group is guided around the cutting line After the fourth cutting line segment L41 is formed on the pair of cutting wheels 251d' sequentially wound around the fourth cutting wheel group 251d, the cutting line then passes through the

guide wheels

253a, 253b, and 253c in the guide wheel group 253 in turn. The cutting line is guided from a pair of cutting wheels 251d′ of the fourth cutting wheel set 251d on one side of the mounting frame 241 to another pair of cutting wheels 251d″ in the fourth cutting wheel set 251d on the other side of the mounting frame 241, and cut After the wire forms the fifth cutting line segment L42 on the other pair of cutting wheels 251d" in the fourth cutting wheel group 251d, it then goes around the other transition wheel 252c" in the third transition wheel group to guide the cutting line and then follow it. Wrap the other pair of cutting wheels 251c" in the third cutting wheel set 251c for a second time, and after forming the sixth cutting line segment L32 on the other pair of cutting wheels 251c" of the third cutting wheel set 251c, pass through the second transition wheel set The other transition wheel 252b" in the second cutting wheel group 251b guides the cutting line and then sequentially wraps the other pair of cutting wheels 251b" in the second cutting wheel group 251b to form on the other pair of cutting wheels 251b" of the second cutting wheel group 251b. After the seventh cutting line segment L22, the cutting line is guided by another transition wheel 252a" in the first transition wheel set, and then the other pair of cutting wheels 251a" in the first cutting wheel set 251a is sequentially wound. The eighth cutting line segment L12 is formed on the other pair of cutting wheels 251a of the first cutting wheel set 251a, and then the line exits. The first cutting line segment L11 and the eighth cutting line segment L12 are the two cutting line segments of the first cutting wheel set , The second cutting line segment L21 and the seventh cutting line segment L22 are the two cutting line segments of the second cutting wheel group, and the third cutting line segment L31 and the sixth cutting line segment L32 are the two cutting line segments of the third cutting wheel group. The fourth cutting line segment L41 and the fifth cutting line segment L42 are the two cutting line segments of the fourth cutting wheel set, and the two cutting line segments of each cutting wheel set are used to cut two parallel axis cut surfaces of the silicon rod to be cut. In this case, the wire cutting unit performs a down-cutting, and can complete four to-be-cuts at the same time. To cut the two parallel-axis sections of the silicon rod, the process of two parallel-axis sections needs to be performed twice in the completion of a square-cutting operation. After the two parallel-axis sections are cut once, the rotation mechanism of the silicon rod bearing table is passed Rotate the silicon rod carrying table (rotate 90 degrees) to adjust the to-be-cut surface of the silicon rod to be cut. It should be noted that, in order to ensure that the silicon rod after the square is rectangular in shape as a whole, the horizontal distance between the grooves of the two pairs of cutting wheel sets of the cutting wheel set is less than or equal to the side length of the square inscribed in the cross section of the silicon rod to be cut , So as to ensure that the intersection of the cutting line when the wire cutting unit performs two horizontal-axis cuts on the silicon rod is located within the cross-sectional circle of the silicon rod to be cut (including the case where the intersection is located on the circumference of the cross-sectional circle).

In one embodiment, please refer to FIG. 2. As shown in the figure, the wire cutting device further includes a wire take-up barrel 255 and a wire pay-off barrel 254 arranged on the machine base 20. The wire take-up barrel 255 and the wire pay-off barrel 254 is used to retract and unwind the cutting line in the square-out operation.

The wire cutting device can be used to perform square cutting on the silicon rod to be cut to form the cut silicon rod and the edge skin. After the on-line cutting device is used for a long time, the wire groove around the cutting line in the cutting wheel will be worn, which affects the cutting effect. Therefore, the cutting wheel of the general wire cutting device is equipped with multiple wire grooves, and it is necessary to change the groove. The cutting wire is changed to other wire grooves of the cutting wheel. At this time, it is necessary to follow the groove of the other wire groove and the current wire groove. Distance, adjust the moving distance of the cutting wheel.

In view of this, the multi-wire cutting equipment also includes an automatic slot changing mechanism. Please refer to FIGS. 12 and 13. FIG. 12 shows a schematic structural diagram of an automatic slot changing mechanism used in a multi-wire cutting device in accordance with an embodiment of the present application in cooperation with a wire cutting device. A schematic cross-sectional structure diagram of an automatic slot changing mechanism in a wire cutting device in an embodiment. As shown in the figure, in the embodiment, the automatic slot changing mechanism 29 includes a cutting wheel 290, a slot changing cylinder 292, and a positioning member 291. The cutting wheel includes a first slot and a second wire for winding the cutting line. Slot, the slot changing cylinder is linked with the cutting wheel 290, and is used to drive the cutting wheel 290 to move along its axial direction to move the cutting line from the one slot to another adjacent slot The slot changing cylinder 292 includes a cylinder body, and a first guide rail 293 and a second guide rail 294 connected to each other opened on the cylinder body. The height difference between the first guide rail 293 and the second guide rail 294 corresponds to the The groove distance between the first and second wire grooves, the positioning member 291 is relatively slidably arranged in the first guide rail 293 or the second guide rail 294, and is used to move the groove changing cylinder 292 along the axis When moving forward, sliding in the first guide rail 293 or the second guide rail 294 drives the slot changing cylinder 292 to rotate, so as to force the cutting line on the cutting wheel 290 to switch from the first slot to the second slot .

Please refer to FIG. 12, FIG. 13 and FIG. 14. FIG. 14 is a partial enlarged view of part B of FIG. 13. The automatic slot changing mechanism will be described in detail below by taking the cutting wheel including two wire slots as an example.

The cutting wheel 290 includes a first wire groove and a second wire groove (not shown) for winding a cutting wire. In one embodiment, the cutting wheel 290 includes a first wire groove and a second wire groove. The direction of the arrow shown in FIG. 13 is taken as the front and the direction opposite to the arrow is taken as the back. The cutting wire is initially wound around the first groove. On a wire slot, the second wire slot is located on the rear side of the first wire slot and is adjacent to the first wire slot.

The slot changing cylinder 292 is linked with the cutting wheel 290, and is used to drive the cutting wheel 290 to move along its axial direction to move the cutting line from the one slot to another adjacent slot The slot changing cylinder 292 includes a cylinder body and a first guide rail 293 and a second guide rail 294 communicating with each other opened on the cylinder body, and the drop between the first guide rail 293 and the second guide rail 294 corresponds to the The slot distance between the first slot and the second slot.

The positioning member 291 is relatively slidably disposed in the first guide rail 293 or the second guide rail 294, and is used to move the groove changing cylinder 292 along the axial direction on the first guide rail 293 or the second guide rail 294. The inner slippage drives the slot changing cylinder 292 to rotate, so as to force the cutting line on the cutting wheel 290 to switch from the first slot to the second slot.

In one embodiment, the slot changing cylinder 292 is arranged on the mounting frame 241 of the cutting frame 24, a positioning shaft (not shown) is arranged at the front end of the slot changing cylinder 292, and the cutting wheel 290 passes A bearing is rotatably arranged on the positioning shaft, and the groove changing cylinder 292 moves along its axial direction to drive the cutting wheel 290 to move along its axial direction to move the cutting line from the first groove to the second groove .

In one embodiment, the slot changing cylinder 292 is driven by a driving device 295 to move along its axial direction. The driving device 295 includes a cylinder assembly or a screw assembly driven by a motor. In this embodiment, The driving device 295 is configured as an air cylinder assembly. The air cylinder assembly includes an air cylinder and a telescopic rod driven by the air cylinder. The rear end of the slot changing cylinder 292 is arranged on the telescopic rod through a bearing, so that the slot changing The cylinder 292 can be pushed by the cylinder assembly to move along its axial direction and can also rotate under force. However, it is not limited to this. In other embodiments, the driving device 295 may also be a screw assembly driven by a motor, and the rear end of the slot changing cylinder 292 is disposed on the screw assembly through a bearing. Above, the motor drives the screw assembly to extend or retract so that the slot changing cylinder 292 moves along its axial direction and can rotate under force at the same time.

In order to realize automatic slot change, the moving distance of the cutting wheel 290 is adjusted every time the slot distance between the first wire slot and the second wire slot. Therefore, the drop H between the first rail 293 and the second rail 294 corresponds to The slot distance between the first wire groove and the second wire groove, in one embodiment, the first guide rail 293 has a first seating end 2930, and the first seating end 2930 is connected to the first The wire slot has a first distance, the second guide rail 294 has a second landing end 2940, the second landing end 2940 and the second wire slot have a second distance, and the first distance is equal to the second distance. In this way, the drop H between the first guide rail 293 and the second guide rail 294 is equal to the slot distance between the first wire groove and the second wire groove.

In order to facilitate the guiding of the positioning member 291 from the first seating end 2930 of the first guide rail 293 to the second seating end 2930 of the second guide rail 294 to realize automatic slot change, in the embodiment, the first seating end A transition end 296 is provided between 2930 and the second seating end 2940.

In order to further facilitate the positioning member 291 to quickly slide from the first seating end 2930 to the transition end 296 and from the transition end 296 to the second seating end 2940, the first seating end 2930 and the transition end There is an upward section 297 between 296 to provide an upward passage for the positioning member 291, and a downward section 298 between the transition end 296 and the second positioning end 2940 to provide a downward passage for the positioning member 291. In an embodiment, the upward section 297 is in a contracted state from the direction of the first landing end to the direction of the transition end, and the downward section 298 is in a contracted state from the direction of the transition end to the second landing end.

Preferably, in order to guide the positioning member 291 to slide quickly and accurately through the transition end 296, the transition end 296 has a first passage 2960 connected to the upward section 297, and the transition end 296 has a first passage 2960 connected to the downward section 297. The second channel 2961, the width of the first channel 2960 is smaller than the second channel 2961.

In order to prevent the positioning member 291 from sliding back at the transition end 296, that is, the positioning member 291 cannot smoothly slide along the first channel 2960 of the transition end 296 to the second channel 2961 of the transition end 296 into the down section 298, and the transition end 296 The first channel 2960 enters the upward section 297 and returns to the first seating end 2930, making it impossible to realize automatic slot change. In an embodiment, the apex of the transition end 296 near the cutting wheel 290 is located in the second channel 2961, which means that the horizontal distance between the first channel 2961 and the cutting wheel 290 is greater than that between the second channel 2961 and the second channel 2961. The horizontal distance between the cutting wheels 290 is such that the positioning member 291 slides from the first channel 2960 to the second channel 2961 in an upward slope with a slope, so that the slot changing cylinder 292 moves backward along its axial direction. At this time, the positioning member 291 slides from the first channel 2960 to the second channel 2961 while driving the slot changing cylinder 292 to rotate to realize the switching of the positioning member from the first guide rail 293 to the second guide rail 294. Similarly, in order to prevent the positioning member 291 from sliding smoothly to the upper section 297 at the first seating end 2920, the projection of the vertex of the first seating end 2930 away from the cutting wheel 290 is located in the upward section 297.

The positioning member 291 is fixedly connected to a fixing base 299, and the fixing base 299 is connected to the mounting frame 241 of the wire cutting device of the multi-wire cutting equipment, and is used to arrange the positioning member 291 on the first guide rail. 293 or the second guide rail 294. In an embodiment, the fixing seat 299 is set as a cover covering the groove changing cylinder 292, one end of the positioning member 299 is fixed on the wall of the groove changing cylinder 292, and the other end extends into the In the first guide rail 293 or the second guide rail 294, when the slot changing cylinder 292 is driven to move along its axial direction, the positioning member 291 slides in the first guide rail 293 or the second guide rail 294. However, the fixing seat 299 is not limited to this. In other embodiments, the fixing seat 299 can also be configured as a fixing rod placed in the slot changing cylinder 292, and one end of the positioning member 291 is connected to the The other end of the outer wall of the fixed rod extends into the first guide rail 293 or the second guide rail 294. When the slot changing cylinder 292 is driven to move along its axial direction, the positioning member 291 is positioned on the first guide rail 293 or the second guide rail 294. Sliding inside the two guide rails 294.

Please refer to Figures 15a to 15b. Figures 15a to 15d show a schematic view of the movement process of the automatic slot changing mechanism of the multi-wire cutting device of this application. As shown in the figure, the cutting line is initially located on the first line of the cutting wheel 290 In the slot, correspondingly, the positioning member 291 is located at the first seating end 2930 of the first guide rail 293 (as shown in FIG. 15a). When the automatic slot changing mechanism performs slot changing, first drive The slot changing cylinder 292 moves back along its axial direction (in the direction of the arrow in FIG. 15a) so that the positioning member 291 enters the ascending section 297 from the first position 2930 and moves up to the first passage 2960 at the transition end (in the form of As shown in Figure 15b), then, the groove changing cylinder 292 is driven to continue to move backward along its axial direction so that the positioning member 291 matches the transition end 296 to force the groove changing cylinder 292 to rotate (in the direction of the arrow in Figure 15b), so that the positioning member 291 Slide from the first channel 2960 at the transition end to the second channel 2961 at the transition end (as shown in Figure 15c), and finally, drive the slot changing cylinder 292 forward along its axial direction (in the direction of the arrow in Figure 15c) to make The positioning member 291 enters the descending section 298 from the second passage 2961 at the transition end and slides down to the second seating end 2940 (as shown in FIG. 15d), so that the barrel changing groove 292 moves forward along its axial direction. The distance between the first wire groove and the second wire groove makes the cutting line switch from the first wire groove to the second wire groove.

It is worth noting that, in the above embodiment, the cutting wheel includes two wire grooves, a first wire groove and a second wire groove, respectively, and the groove changing cylinder is provided with two guide rails, a first guide rail and a second wire groove, respectively. Two guide rails, but the number of wire slots included in the cutting wheel and the number of guide rails provided by the slot changing cylinder are not limited to this.

In other embodiments, the cutting wheel includes three wire grooves. For example, the cutting wheel includes a third wire groove in addition to the first wire groove and the second wire groove in the above embodiment. It is adjacent to the rear side of the second wire groove.

The number of guide rails provided in the slot changing cylinder is consistent with the number of the wire grooves, and is set to three. For example, the slot changing cylinder is provided with the first guide rail and the second guide rail in the above-mentioned embodiment. A third guide rail is provided, and the third guide rail is connected to the second guide rail and the gap between the third guide rail and the second guide rail corresponds to the slot distance between the second wire groove and the third wire groove, that is, the third guide rail There is a third position end, the third position end and the third wire slot have a third distance, and the third distance is equal to the second distance.

In order to facilitate the guiding of the positioning member from the second positioning end of the second guide rail to the third positioning end of the third guide rail to realize the switching of the cutting line from the second wire groove to the third wire groove, in an embodiment, the first There is also a transition end between the two positioning ends and the third positioning end. Similarly, there is an upward section between the second positioning end and the transition end, and the upward section has a side wall with a first slope, There is a downward section between the transition end and the third landing end, and the downward section has side walls with a second slope. In an embodiment, the upward section is contracted from the direction of the second landing end to the transition end. In the state, the descending section is in a contracted state from the direction of the transition end to the direction of the third landing end.

In order to guide the positioning member to slide quickly and accurately through the transition end, the transition end has a first passage communicating with the upward section and a second passage communicating with the downward section. The width of the first passage is smaller than that of the second passage. .

In order to avoid the positioning member from sliding back at the transition end, that is, the positioning member cannot smoothly slide along the first channel of the transition end to the second channel of the transition end to enter the down section, and from the first channel of the transition end to the up section and return to the second The landing end makes it impossible to move the cutting line from the second slot to the third slot. In one embodiment, the apex of the transition end near the cutting wheel is located in the second channel, which means that the horizontal distance between the first channel and the cutting wheel is greater than the horizontal distance between the second channel and the cutting wheel So that the operating state of the positioning member sliding from the first channel to the second channel is an upward slope with a slope, so that when the slot changing cylinder moves backward along its axial direction, the positioning member slides from the first channel at the transition end When reaching the second channel, the slot changing cylinder is driven to rotate to realize the switching of the positioning member from the second guide rail to the third guide rail. Similarly, in order to prevent the positioning member from sliding smoothly to the transition end at the second landing end, the projection of the second landing end away from the apex of the cutting wheel is located in the first channel.

But it is not limited to this. In the actual implementation, the number of wire grooves on the cutting groove may also be 4, 5, and so on. The cutting wheel may also include multiple wire grooves, and the changing The grooved cylinder can also be provided with a plurality of mutually connected guide rails consistent with the number of the wire grooves. Of course, as the number of guide rails increases, the diameter of the grooved cylinder needs to be increased, which will not be repeated here.

In general, since the silicon rods to be cut have a relatively high self-weight, they can be placed on the silicon rod carrying table through their own weight which is relatively stable. However, in the subsequent silicon rod cutting operations, the silicon rods to be cut will be subjected to wire The pulling action of the cutting line in the cutting unit causes the risk of disturbance, dislocation or even overturning. In order to avoid the occurrence of the above-mentioned various risks, a silicon ingot pressing device capable of lifting motion is also provided above the silicon ingot carrying table located in the cutting area. The silicon ingot pressing device is erected on the lifting rail and is located Above the wire cutting device, that is, the silicon rod pressing device and the wire cutting device share the same lifting rail, and the silicon rod pressing device is used for the silicon rod bearing platform of the cutting area of the wire cutting device When cutting the upper silicon rod to be cut, press the top of the silicon rod to be cut.

Please refer to FIG. 16, which shows a schematic structural diagram of a silicon rod pressing device in an embodiment of the multi-wire cutting equipment of the present application. As shown in the figure, the silicon rod pressing device 26 includes a pressing support 260 and The pressing unit 261 on the pressing support and corresponding to the silicon rod bearing table 21 located in the cutting area. A sliding block 262 that cooperates with the lifting rail 242 is fixed on the pressing bracket 260, and the pressing bracket 260 is vertically erected on the cutting machine through the cooperation of the sliding block 262 and the lifting rail 242. On the support column 240 of the frame 24 and above the wire cutting device, the pressing unit 261 is arranged on the pressing bracket 260 and can be lifted and lowered with the pressing bracket 260 to release or compress the silicon rod carrier 21 in the cutting area. To be cut on the silicon rod.

Affected by the manufacturing process, the heights of the silicon rods to be cut on the silicon rod bearing table 21 in the cutting area are not completely the same. The pressing unit 261 follows the pressing bracket 260 to descend, which does not guarantee that each pressing unit 261 is pressed tightly. On the silicon rod to be cut carried by the corresponding silicon rod carrier 21. In view of this, the pressing unit 261 includes a pressing block 2610 and a driving structure for driving the pressing block to move up and down. In one embodiment, the driving structure is configured as a cylinder assembly, the cylinder assembly includes a cylinder 2611 and a telescopic member 2612 connected to the cylinder, and the pressure block 2610 is provided at the bottom of the telescopic member 2612 (that is, the telescopic member 2612 faces the On the surface of the silicon rod bearing table 21 in the cutting zone, the air cylinder 2611 drives the telescopic member 2612 with the pressing block 2610 to move up and down to release or compress the silicon rod to be cut on the silicon rod bearing table 21 in the cutting zone.

Since the silicon rod carrier 21 has a rotating mechanism 210, the silicon rod to be cut located on it can be driven to rotate to adjust the surface to be cut. In order to cooperate with the rotating mechanism 210 of the silicon rod carrier 21, in one embodiment, the pressing block 2610 is connected to the driving structure through a rotating shaft (not shown). Specifically, a bearing (not shown) is provided at the bottom of the telescopic member 2612 of the cylinder assembly, the pressure block 2610 has a rotating shaft that matches the bearing, and the pressure block 2610 is rotatably installed through the shaft On the bearing of the telescopic member 2612, in this way, when the pressing block 2610 compresses the silicon rod to be cut, the silicon rod bearing table 21 drives the silicon rod to be cut to rotate, and the pressing block 2610 can also rotate with the silicon rod to be cut. .

In order to better protect the silicon rod to be cut, a buffer pad (not shown) can be arranged between the pressure block 2610 and the silicon rod to be cut. The buffer pad is fixed on the pressing surface of the pressure block 2610 (the The pressing surface is the lower surface of the pressing block).

In order to simplify the structure of the multi-wire cutting equipment of the present application and reduce the manufacturing cost of the equipment, in one embodiment, the silicon rod pressing device 26 is attached to the upper edge of the mounting frame 241 for installing the wire cutting unit by its own weight. The lifting rail 242 is used for lifting motion. The first drive mechanism drives the mounting frame 241 to drive the wire cutting unit 25 to descend along the lifting rail 242, and the silicon rod pressing device 26 is attached to the mounting frame 241 and also descends along the lifting rail 242 to a position On the top of the silicon rod to be cut carried by the silicon rod bearing table 21 in the cutting zone, the drive structure in the pressing unit 261 drives the pressing block 2610 to press the corresponding silicon rod to be cut, and the mounting frame 241 will continue to be driven by the first The mechanism drive brings the wire cutting unit 25 down to perform the cutting operation of the silicon rod to be cut. In order to prevent the silicon rod pressing device 26 from continuing to descend following the mounting frame 241 and damaging the silicon rods to be cut, a rail locking unit 263 is provided on the pressing bracket 260 of the silicon rod pressing device 26, and the rail locking unit 263 is used to position the silicon rod pressing device 26 at a predetermined position on the lifting guide rail 242. For example, the predetermined position is that the pressing unit 261 in the silicon rod pressing device 26 is located above the corresponding silicon rod to be cut. 5cm, but not limited to this, only the pressing unit 261 is located above the corresponding silicon rod to be cut. When the pressing block 2610 in the pressing unit 261 is driven down, it can be pressed against its corresponding silicon to be cut Great top surface.

In one embodiment, the guide rail locking unit 263 adopts a pneumatic guide rail locking device. Specifically, the pneumatic guide rail locking device in this embodiment includes a locking clamp block that cooperates with the lifting guide rail 242 and a drive locking clamp The locking clamp block is set on the pressing bracket 260 in the silicon rod pressing device 26. When the silicon rod pressing device 26 and the mounting frame 241 are lowered to a predetermined position, the cylinder is driven to press The locking clamp block on the tightening bracket hugs the lifting rail 242 to position the silicon rod pressing device 26 at a predetermined position. The pressing unit 261 in the silicon rod pressing device 26 presses its corresponding silicon rod to be cut, The mounting frame 241 continues to be driven to drive the wire cutting unit 25 down to complete the cutting of the silicon rods to be cut. After the cutting operation of the silicon rods to be cut is completed, the mounting frame 241 is driven by the first drive mechanism to drive the wire cutting unit 25 up to When the silicon rod pressing device 26 is positioned at the position, the air cylinder drives the locking clamp block on the pressing bracket 260 to relax the lifting rail 242 so that the silicon rod pressing device 26 continues to attach to the mounting frame 241 to rise.

In another embodiment, the silicon rod pressing device 26 is erected on the lifting rail 242 and driven by a second driving mechanism to move up and down along the lifting rail 242, and the second driving mechanism is configured as Cylinder assembly or screw assembly driven by a motor. In practical applications, the first drive mechanism drives the mounting frame 241 to lower the wire cutting unit 25, and when the second drive mechanism drives the silicon rod pressing device 26 down to a predetermined position, the second drive mechanism stops driving the silicon rod pressing device 26 The silicon rod pressing device 26 is positioned at a predetermined position to compress the silicon rods to be cut, and the first driving mechanism continues to drive the mounting frame 241 to lower the wire cutting unit 25 carrying the wire cutting unit 25 to complete the cutting of the silicon rods to be cut and complete the silicon rods to be cut After the cutting operation, the first drive mechanism drives the mounting frame 241 to raise the wire cutting unit 25, and the second drive mechanism drives the silicon rod pressing device 26 to rise.

In addition, considering that in order to achieve complete cutting of the silicon rods to be cut and to avoid damage to the cutting line due to obstruction, in one embodiment, the silicon rod carrier is a mesa structure with a circular cross-section or a rectangular cross-section. The size of the load-bearing surface in contact with the silicon rod in the mesa structure is larger than the cross-section of the silicon rod to be cut after the silicon rod is cut. Therefore, the mesa structure is provided with a section for the cutting line to enter. The cutting groove, specifically, the table structure is provided with four cutting grooves for the cutting line segment to enter. In this way, when the wire cutting device descends following the mounting frame, the cutting line formed in the cutting device performs a square cut on the silicon rod to be cut carried by the silicon rod bearing table located in the cutting area, and the cutting line reaches the bottom of the silicon rod to be cut At this time, it can continue to descend without hindrance until the silicon rod to be cut is penetrated to achieve complete cutting of the silicon rod to be cut. Of course, the structure of the silicon rod bearing platform is not limited to this.

In other embodiments, the silicon rod bearing table is a mesa structure with a rectangular cross-section, and the size of the supporting surface in contact with the silicon rod in the mesa structure is slightly smaller than that of the squared silicon rod formed after the silicon rod to be cut is cut. Section. In this way, the wire cutting unit of the wire cutting device follows the cutting frame to descend relative to the base, and the cutting line segment formed in the cutting unit performs square cutting on the silicon rod to be cut carried by the silicon rod bearing table located in the cutting area, and the cutting line reaches When the bottom of the silicon rod is to be cut, it can continue to descend without obstruction until it penetrates the silicon rod to be cut, and complete cutting of the silicon rod to be cut is realized.

As mentioned above, the silicon rod bearing table is a mesa structure with a rectangular cross section. The size of the supporting surface in contact with the silicon rod in the mesa structure is slightly smaller than the cross section of the silicon rod to be cut after the silicon rod is cut. In this way, it can be ensured that the cutting line segment in the wire cutting unit unimpededly cuts the to-be-cut silicon rods carried by the silicon rod bearing platform located in the cutting area. However, this design also brings a problem: after the silicon rods to be cut on the silicon rod carrier in the cutting area have completed the square cutting operation, the edges formed after being cut may exist without corresponding supports. Risk of falling or overturning occurs. Therefore, the multi-wire cutting equipment of the present application also includes a side skin supporting mechanism for supporting the side skin formed after the silicon rod to be cut is squared and cut.

The edge skin supporting mechanism disclosed in the present application is arranged on the periphery of the silicon rod bearing platform. After the wire cutting device cuts the silicon rod to be cut carried by the silicon rod bearing platform in the cutting area, edge skin will be formed on the cut side surface. . Therefore, in practical applications, a side skin supporting mechanism is respectively provided on the four sides of the periphery of the silicon rod bearing platform with a rectangular cross-sectional mesa structure to support a corresponding side skin. The side skin supporting mechanism disclosed in this application can support the side skin formed by the warp wire cutting device after the square-cutting operation of the silicon rod to be cut, avoiding relative displacement between the side skin and the square-cut silicon rod, and preventing wire cutting When the cutting line segment in the device passes through the silicon rod to be cut, the edge will collapse, and the edge skin can be prevented from falling and overturning, and the square silicon rod is damaged due to the touch of the edge skin.

In one embodiment, refer to FIG. 17, which shows a schematic structural diagram of a side leather supporting mechanism in an embodiment of the multi-wire cutting device of this application. As shown in the figure, the side leather supporting mechanism 27 includes a supporting member The supporting member includes a base 270 connected to one side of the silicon rod bearing platform 21 and a top support portion 271 extending upward from the base. In this embodiment, the base 270 is configured as a flat plate structure adapted to the side surface of the silicon rod carrier 21, but it is not limited to this. The base 270 can also be configured as a curved panel structure or other special shapes. Structure, the top support portion 271 is set as two top pillars located on both sides of the base 270, and the extension height of the top pillars is consistent with the height of the bearing surface of the silicon rod bearing platform 21. In practice, the top support The portion 271 can also be adopted as a top plate or a top rod extending upward from the base 270. When the wire cutting device performs square cutting on the silicon rod to be cut on the silicon rod bearing table 21, the supporting member can hold the corresponding edge skin, thereby effectively preventing the cutting line in the wire cutting device from passing through the silicon rod to be cut. The edge collapse occurs when sticking, and the edge skin can be prevented from falling and overturning.

In another embodiment, the leather top support mechanism includes a movable support member and a locking control member. In this embodiment, the movable supporting member includes a movable base connected to one side of the silicon rod bearing platform, a top support portion extending upward from the movable base, and a power generating structure for providing the top support portion to move up and down . In an implementation manner, the movable base may be, for example, a flat plate structure adapted to the side surface of the silicon rod bearing table, but is not limited thereto. The movable base may also be, for example, a curved panel structure or other special shapes. structure. The top support portion is at least two top rods extending upward from the movable base, but not limited thereto. The top support portion may also be, for example, a top plate or a top pillar extending upward from the movable base. The power generating structure includes two legs provided at the movable base and two springs respectively sleeved on the two legs, but it is not limited thereto. The power generating structure may also adopt, for example, torsion springs, Structures such as shrapnel. Utilizing the elastic force of the spring, the supporting foot and the connected top rod can move up and down relative to the silicon rod bearing platform. In this embodiment, the locking control member is used to control the movable supporting member in a locked state when the movable supporting member is against the bottom of the silicon rod to be cut. In an implementation manner, the locking control member may be, for example, Electromagnetic lock. In the initial state, the ejector rod protrudes from the bearing surface of the silicon rod bearing platform under the action of the feet and the spring. When the silicon rod to be cut is placed, the ejector rod is After the silicon rod is pressed, it overcomes the elastic force of the spring and moves downwards until the silicon rod to be cut is completely placed on the bearing surface of the silicon rod bearing table. At this time, the electromagnetic lock as the locking control member is energized and generates magnetism through electricity. The strong magnetic force generated by the principle tightly adsorbs the movable base in the movable supporting member, thereby controlling the ejector rod in the locked state. When the wire cutting device performs square cutting on the silicon rod to be cut carried by the silicon rod bearing table corresponding to the cutting zone in the silicon rod conversion device, the movable supporting member in the locked state can support the corresponding edge skin. It can effectively prevent the cutting wire mesh in the wire cutting unit from chipping when passing through the silicon rod to be cut, and can prevent the edge skin from falling and overturning.

According to the above, the silicon rods to be cut will form side skins after square cutting. In order not to hinder the rise of the wire cutting device, the side skins need to be discharged in time. For the side skin discharge, most of the general side skin discharge methods It is still manual operation by the operator to separate the side skins from the prescribed silicon rods and move them out of the silicon ingot multi-wire cutting equipment, which is not only inefficient, but also collides with the prescribed silicon rods during the handling process. It increases the risk of damage to the prescribed silicon rod. In view of this, the multi-wire cutting equipment of the present application also includes a side skin unloading device, which is used to discharge the side skin formed after the wire cutting device performs square cutting of the silicon rod to be cut.

Please refer to FIG. 18, which shows a schematic structural diagram of a side skin lifting mechanism in an embodiment of the multi-wire cutting equipment of this application. The side skin unloading device 28 includes a side skin lifting mechanism 280 for lifting the side skin to The top end of the edge skin 10 protrudes from the cut silicon rod. The side skin lifting mechanism 280 includes a jacking member 2800 arranged on the mounting frame 241, the jacking member 2800 is driven by a telescopic member 2801 to make a telescopic movement, and the jacking member 2800 is controlled to make an extension movement. Then support the bottom of the side skin 10 to lift the side skin 10.

In one embodiment, the jacking member 2800 includes an abutment plate and a support plate, the abutment plate extends upward from the bottom of the support plate, and further, the abutment plate may be a The arc-shaped plate adapted to the arc-shaped surface of the side skin 10 can fully contact the arc-shaped surface of the side skin 10 when the abutment plate abuts against the side skin 10. The contacting part is of a round design or a cushion pad should be added to the inner surface in contact with the side skin 10 in the abutment plate. The supporting plate is used to support the bottom of the side skin 10, and further, the supporting plate may be an arcuate plate that fits the bottom surface of the side skin 10. In other embodiments, bumps can be added to the chord side of the arcuate plate serving as the supporting plate to increase the contact area with the bottom surface of the side skin 10.

In an embodiment, the telescopic component 2801 may be, for example, an air cylinder with a telescopic rod, wherein the telescopic rod may be connected to the supporting plate in the jacking member 2800 through a connecting structure, and the air cylinder may drive the The telescopic rod drives the jacking member 2800 for telescopic movement. Here, the telescopic movement of the jacking member 2800 includes the contraction movement of the jacking member 2800 and the extension movement of the jacking member. The contraction movement of the jacking member 2800 specifically refers to the air cylinder driving the telescopic rod to contract to drive the jacking member. The lifting member 2800 is far away from the side skin 10, and the stretching movement of the lifting member 2800 specifically refers to that the air cylinder drives the telescopic rod to extend to drive the lifting member 2800 to approach the side skin 10. Of course, the aforementioned telescopic component 2801 can also be implemented in other ways. For example, the telescopic component 2801 can also be, for example, a servo motor with a lead screw. The lead screw is connected to the jacking member and is driven by the servo motor. Drive the lead screw to rotate to drive the connected jacking member 2800 to make a telescopic movement. For example, drive the lead screw to rotate forward to drive the jacking member 2800 to contract and drive the lead screw to rotate in reverse. The jacking member 2800 performs an extension movement, or the jacking member 2800 is driven to make an extension movement by driving the lead screw to rotate in a forward direction and the jacking member 2800 is driven to make a contraction movement by driving the lead screw to rotate in a reverse direction.

In practical applications, in the initial state, the telescopic rod drives the lifting member 2800 to be in a contracted state, and the wire cutting unit 25 is driven to descend with the mounting frame 241 so that the cutting line formed by each cutting line segment in the wire cutting unit 25 Perform square cutting on the silicon rod to be cut in the cutting area until the cutting line segment penetrates the silicon rod to be cut to complete a complete cutting of the silicon rod to be cut and form the side skin 10. At this time, the side skin lifting mechanism 280 has followed The wire mounting frame 241 is lowered to the bottom, and the air cylinder drives the telescopic rod to extend to drive the jacking member 2800 to approach the side skin 10 until the abutment plate in the jacking member 2800 contacts the side skin 10 and achieves abutment. The cutting unit 25 is driven to follow the mounting frame 241 to rise, and the side skin lifting mechanism 280 follows the mounting frame 241 to rise, driving the side skin 10 to rise and displace relative to the silicon rod that has been cut once, so that the top of the side skin 10 protrudes from the silicon to be cut. When the top of the side skin 10 satisfies the set conditions compared with the protruding part of the silicon rod to be cut, the mounting frame 241 can be controlled to stop rising. In this way, the top of the side skin can be used as a force point for grasping, so that The side skin is grabbed and discharged, and then the air cylinder drives the telescopic rod to contract to drive the jacking member 2800 back to the initial state while controlling the mounting frame 241 to drive the wire cutting unit 25 and the side skin lifting mechanism 280 to continue to rise above the silicon rod to be cut Prepare for the next cutting operation.

In other embodiments, the side skin lifting mechanism may include a suction member and a telescopic member that drives the suction member to expand and contract. The suction member is controlled by the telescopic member to abut the side skin and adsorb the side. skin. The suction member may further include an abutting plate and a suction element. The abutment plate may be, for example, an arc-shaped plate that fits with the arc-shaped surface of the edge skin, and when the abutment plate is against the edge skin, it can interact with the arc-shaped surface of the edge skin. Full contact. The suction element may be, for example, a vacuum suction cup, and a plurality of vacuum suction cups may be arranged on the contact surface of the abutment plate to be in contact with the edge skin. The telescopic component may be, for example, a cylinder with a telescopic rod or a servo motor with a lead screw. Taking a cylinder with a telescopic rod as an example, the telescopic rod can be connected to the jacking member through a connecting structure. Connected to the backing plate, the air cylinder can drive the telescopic rod to shrink to drive the abutment plate away from the side skin, and the air cylinder can drive the telescopic rod to extend to drive the abutment plate close to the side skin and After the abutment plate is in contact with the edge skin, the suction element adsorbs the edge skin. Subsequently, the mounting frame is driven to rise, the side skin lifting mechanism and the wire cutting device follow the mounting frame to rise, and the side skin lifting mechanism can use the adsorption force to drive the side skin to rise and shift relative to the silicon rod that has been cut once. , So that the top end of the edge skin protrudes from the silicon rod that has been cut once.

It should be noted that since the multi-wire cutting equipment of the present application is provided with multiple cutting wheel sets to simultaneously cut multiple silicon rods to be cut, a plurality of edge skin lifting mechanisms are provided on the mounting frame corresponding to the multiple cutting wheel sets Simultaneously discharging multiple silicon rods that have been cut. In the case that each cutting wheel set is provided with a pair of cutting wheels, one press-cutting of the wire cutting device forms a side skin, and a pair of cutting wheels corresponding to each cutting wheel set is provided on the mounting frame. An edge skin lifting mechanism can discharge the edge skin formed in the cutting operation in time. In the case that each cutting wheel group is provided with two pairs of cutting wheels, one press-cutting of the wire cutting device forms two side skins, which correspond to the two pairs of cutting wheels of each cutting wheel group on the mounting frame. Each side skin lifting mechanism is provided to discharge the side skin formed in the cutting operation in time.

The edge skin unloading device 28 also includes a clamping and transferring unit 281, which is arranged above the silicon rod bearing platform 21 in the cutting area, and is used to clamp the top of the edge skin and pull the edge skin to escape from the The silicon rods have been prescribed and the side skins are transferred to the side skin discharge area.

Please refer to FIG. 2, as shown in the figure, the clamping and transferring unit 281 includes a moving mechanism 283 that provides movement in at least one direction and a side leather clamping mechanism 284, and the side leather clamping mechanism 284 is connected to the moving mechanism 283 And be driven to move in at least one direction.

In one embodiment, a supporting plate 282 for supporting the clamping and transferring unit 281 is straddled at the top ends of the two supporting columns 240 arranged opposite to the cutting frame 24, and the clamping and transferring unit 281 is arranged at The supporting plate 282 corresponds to the upper side of the silicon rod carrier in the cutting area.

In an embodiment, the edge skin clamping mechanism 284 may be provided in a number of one-to-one correspondence with the silicon rod carrier in the cutting area. In order to simplify the mechanism, reduce the manufacturing cost and reduce the working energy consumption, in the embodiment, two adjacent edge leather clamping mechanisms 284 share a moving mechanism 283 that provides movement in at least one direction.

In one embodiment, referring to Figures 2 and 19, Figure 19 is a partial enlarged view of part A in Figure 2. As shown in the figure, the moving mechanism 283 that moves in at least one direction is an X-direction moving mechanism. The X-direction moving mechanism includes an X-direction guide rail 2830, an X-direction slider 2831, and an X-direction drive source 2832. The X-direction guide rail 2830 is laid on the support plate 282, and the X-direction slider 2831 is adapted to the X A mounting seat 2833 is provided on the guide rail 2830 and on the X-direction slider 2831. The two edge gripping mechanisms 284 are respectively located on the left and right sides of the mounting seat 2833. The X-direction driving source 2832 may be, for example, an X-direction telescopic cylinder assembly. Or X-direction motor. In order to enable the side leather clamping mechanism 284 to move smoothly in the X direction, a dual guide rail design is adopted in this embodiment, that is, two X-direction guide rails 2830 are adopted, and the two X-direction guide rails 2830 are arranged in parallel along the X direction. In this way, the X-direction drive source 2832 drives the mounting seat 2833 on the X-direction slider 2831 to move the two side leather clamping mechanisms 284 thereon to move in the X-direction along the X-direction guide rail 2830. In practical applications, the moving direction of the moving mechanism 283 is not limited to this. In other embodiments, the moving mechanism may also include a Y-direction moving mechanism or a Z-direction moving mechanism.

Please refer to FIG. 20. FIG. 20 shows a schematic diagram of the external structure of the side skin clamping mechanism in an embodiment of the multi-wire cutting device of the present application. As shown in the figure, the side skin clamping mechanism 284 includes a lifting drive structure 2841 and And a clamping assembly arranged at the bottom of the lifting drive structure. In an embodiment, the lifting drive structure 2841 is used to drive the clamping assembly for lifting movement. The lifting drive structure 2841 can be, for example, a lifting cylinder with a lifting rod connected to the clamping assembly, and The air cylinder can control the expansion and contraction of the lifting rod to drive the clamping assembly to move up and down, but it is not limited to this. For example, the lifting drive structure may also be a screw assembly driven by a motor, the screw assembly is connected to the clamping assembly, and the motor drives the screw assembly to lift to drive the clamping assembly to move up and down.

Please refer to FIG. 21. FIG. 21 shows a cross-sectional structure diagram of the clamping assembly in an embodiment of the multi-wire cutting device of the present application. As shown in the figure, the clamping assembly includes a cover 2842 and a retractable clamping member The telescopic clamping member is arranged inside the cover body 2842, and a clamping space 2842 for clamping the edge skin is formed between the clamping member and the cover body 2842. In an embodiment, the cover body 2842 is used to cover the edge skin, the coverable size of the cover body 2842 is slightly larger than the cross-sectional circle of the silicon rod to be cut, and the cover body 2842 is set to be closed or non-closed Round cover, but not limited to this.

The structure of the clamping assembly is not limited to this. In other embodiments, the clamping assembly includes an arc-shaped plate and a retractable clamping member, between the clamping member and the arc-shaped plate A clamping space for clamping the edge skin is formed.

As shown in FIG. 21, the clamping member is a movable pressure block 2844 controlled by a cylinder 2845, and the movable pressure block 2844 is connected to the cylinder 2845 through a turning arm 2846. In an embodiment, the turning arm 2846 has a mounting portion and a first connecting portion and a second connecting portion located on opposite sides of the mounting portion, wherein the first connecting portion is connected to the piston rod 2848 of the cylinder 2845. , The second connecting part is connected to the movable pressing block 2844.

In one embodiment, the cover 2842 is provided with a base 2847 for supporting the clamping member, and the base 2847 carries the clamping member to penetrate between the cut silicon rod and the edge skin. In the recessed area, the cylinder 2845 is fixed on the side wall of the base 2847 and has a piston rod 2848. The mounting part of the turning arm 2846 is hinged with a support seat 2849 fixed at the bottom of the base 2847 to enable the turning arm 2846 Rotating up and down with the mounting part as the axis, the movable pressing block 2844 is fixedly connected to the second connecting part of the turning arm 2846, the first connecting part of the turning arm 2846 is hinged with the piston rod 2848 of the cylinder, and the cylinder 2845 pushes The piston rod 2848 expands and contracts to drive the first connecting part of the turning arm 2846 to fall or lift with the support base 2849 as the center point, so that the second connecting part of the turning arm 2846 is raised or lowered with the support base 2849 as the center point. The movable pressing block 2844 connected to the second connecting part of the turning arm is far away from or close to the cover 2842, and the clamping space 2843 between it and the cover 2842 is adjusted. Specifically, referring to FIG. 22, in the initial state, the second connecting portion of the turning arm 2846 is higher than the first connecting portion, and the movable pressing block 2844 is away from the cover 2842. When the side skin needs to be clamped, the cylinder 2845 drives the piston rod 2848 to retract, thereby pulling the first connecting part of the turning arm 2846 up with the support base 2849 as the center point, and the second connecting part of the turning arm 2846 takes the supporting base 2849 as the center point. The lowering of the center point drives the movable pressure block 2844 to approach the cover 2842 (in the direction of the arrow in FIG. 22), which reduces the clamping space 2843 between the movable pressure block 2844 and the cover 2842 to clamp the side skin. When the side skin needs to be released, the cylinder 2845 drives the piston rod 2848 to extend, thereby driving the first connecting portion of the turning arm 2846 to fall with the support base 2849 as the center point, and the second connecting portion of the turning arm 2846 to rise with the support base 2849 as the center point Driving the movable pressure block 2844 away from the cover body 2842 returns to the initial state, which increases the clamping space 2843 between the movable pressure block 2844 and the cover body 2842 to facilitate the release of the side skin. In order to prevent the movable pressure block 2844 from contacting the side skin during long-term clamping, causing abrasion and damage to each other, in one embodiment, the movable pressure block 2844 is provided with a cushion for contacting the side skin.

It should be noted that, as mentioned above, the wire cutting unit 24 includes a plurality of cutting wheel sets 251. In some embodiments, each cutting wheel set 251 includes a pair of cutting wheels, and the pair of cutting wheels is used for cutting. The silicon rod cutting operation requires four single-axis face cutting steps. In this embodiment, the number of the clamping members is set to one. Perform the first single-axis face cutting to form a side skin, which is clamped by a clamping piece, and then transferred out through the lifting drive structure 2841 and the X-direction moving mechanism, and then adjusted to be Cut the cutting surface of the silicon rod (for example, rotate 90 degrees), perform the second single-axis face cutting to form a side skin again, and again use a clamping member to clamp the side skin and then pass the lifting drive structure 2841 and X The side skins are forwarded to the moving mechanism, and the side skins formed by performing the third and fourth single-axis face cutting are all forwarded in this way, which will not be repeated here. In other embodiments, each cutting wheel set 251 includes two pairs of cutting wheels, and using the two pairs of cutting wheels to perform cutting operations on the silicon rod to be cut requires two parallel-axis cutting operations. In this embodiment , The clamping members are arranged as two oppositely arranged. Perform the first cutting of two parallel axis surfaces to form two side skins. The two side skins formed at the corresponding positions are clamped by the two clamping members, and all the sides are held by the lifting drive structure 2841 and the X-direction moving mechanism. The two side skins are transferred out, and then adjust the cutting surface of the silicon rod to be cut (for example, rotate 90 degrees), and perform a second cutting of two parallel axis surfaces to form two side skins again. The piece clamps the two side skins formed at the corresponding positions and transfers the two side skins through the lifting driving structure 2841 and the X-direction moving mechanism.

In an embodiment, the side skin unloading device includes a side skin conveying structure, the side skin conveying structure is arranged in the side skin unloading area, and is used for conveying the side skin that has been operated by the clamping transfer unit, In one implementation, the edge skin conveying structure may be, for example, a conveyor belt. It is easy to understand that the side skin unloading area is the area where the side skins are unloaded in the multi-wire cutting equipment. Specifically, the side skin unloading area is the area corresponding to the bottom of the side skin after the clamping transfer unit transports the side skins from the cutting area. area. In actual operation, the side skin is transferred from the cutting area to the side skin unloading area by the clamping and transfer unit, and the clamping component in the clamping and transfer unit is loosened to release the side skin to the conveyor belt as the side skin conveying structure. The side skin is transported out by the conveyor belt.

In another embodiment, the side skin unloading device includes a side skin tube, and the side skin tube is arranged in the side skin unloading area. Wherein, the barrel mouth of the side leather tube can be designed to be larger or a bell mouth, which is convenient for the side leather to be inserted without obstacles, and the height of the barrel arm of the side leather tube is also relatively high, which can ensure the inserted side leather No overturning etc. will occur. In this way, the side skin is moved from the cutting area to the side skin tube by the clamping and transfer unit, and then the side skin can be taken out of the side skin tube by the operator.

Of course, the unloading of the edge skin formed after cutting the silicon rod to be cut is not limited to this. For example, in other embodiments, the side skin unloading device may include both a side skin tube and a side skin conveying structure, wherein the side skin conveying structure may be, for example, a conveyor belt, and the side skin tube is adjacent to the The starting end of the conveyor belt (for example, the side skin tube is located beside the starting end of the conveyor belt or directly above the starting end of the conveyor belt, etc.). Wherein, the barrel mouth of the side leather tube can be designed to be larger or a flared mouth, so that the side leather can be placed in a barrier-free manner, and the height of the barrel arm of the side leather tube is also relatively high to ensure The skin will not overturn. In practical applications, the side skin tube may be of a reversible design. By turning over the side skin tube, each side skin in the side skin tube can be smoothly transferred to the conveyor belt. For example, the bottom of the side skin tube is provided with a turning drive mechanism, and the turning drive mechanism may include a turning plate, a rotating shaft, and a turning drive source (such as a turning motor or a turning cylinder, etc.). In this way, after the side skin is transferred from the cutting area to the side skin tube by the clamping and transfer unit, the side skin tube is turned to drive the side skin in the tube to be transferred to the conveyor belt, and the side skin is transferred to the conveyor belt by the conveyor belt. Transport the side skins out.

Through the multi-wire cutting equipment disclosed in the present application and the automatic groove changing mechanism applied to the multi-wire cutting equipment, the cutting wheel and the groove changing cylinder are linked, and the groove changing cylinder only needs to be driven to drive the cutting wheel to move along its axial direction. The cutting line is moved from the first slot of the cutting wheel to the adjacent second slot. The entire automatic slot changing process does not require manual intervention and the automatic slot changing operation is simple, which can ensure the precise adjustment of the slot position. Improve work efficiency.

The foregoing embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or changes made by persons with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in this application should still be covered by the claims of this application.

Claims

An automatic slot changing mechanism applied to multi-wire cutting equipment, which is characterized in that it comprises:

The cutting wheel includes a first wire groove and a second wire groove for winding the cutting line;

The slot changing cylinder is linked with the cutting wheel, and is used to drive the cutting wheel to move along its axial direction to move the cutting line from the first line groove to the adjacent second line groove, including the cylinder body , And a first rail and a second rail connected to each other opened on the cylinder body, and the drop between the first rail and the second rail corresponds to the slot distance between the first wire groove and the second wire groove ；

The positioning member is relatively slidably arranged in the first guide rail or the second guide rail, and is used for sliding the groove changing in the first guide rail or the second guide rail when the groove changing cylinder moves in the axial direction. The drum rotates to force the cutting line on the cutting wheel to switch from the first wire groove to the second wire groove.
The automatic slot changing mechanism applied to a multi-wire cutting device according to claim 1, wherein the first guide rail has a first position end, and the first position end is connected to the first wire groove There is a first distance; the second guide rail has a second positioning end, and the second positioning end has a second distance from the second wire groove; the first distance is equal to the second distance.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 2, wherein there is a transition end between the first landing end and the second landing end.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 3, wherein there is an upward section between the first landing end and the transition end, and the upward section has a first slope The side wall; between the transition end and the second landing end there is a downward section, and the downward section has a side wall with a second slope.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 4, wherein the transition end has a first passage communicating with the upward section, and the transition end has a first passage communicating with the downward section. The second channel, the width of the first channel is smaller than the second channel.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 5, wherein the apex of the transition end adjacent to the cutting wheel is located in the second channel.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 1, further comprising a driving device for driving the slot changing cylinder to telescopically move along its axial direction.
8. The automatic slot changing mechanism applied to multi-wire cutting equipment according to claim 7, wherein the driving device comprises a cylinder assembly or a screw assembly driven by a motor.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 1, wherein the positioning member is fixedly connected with a fixing seat connected to the multi-wire cutting equipment for setting the positioning member In the first rail or the second rail.
The automatic slot changing mechanism applied to the multi-wire cutting equipment according to claim 9, wherein the fixing seat is configured as a cover covering the slot changing cylinder.
A multi-wire cutting equipment, characterized in that it comprises:

At least two silicon rod loading platforms for supporting the single crystal silicon rods placed vertically; and

The wire cutting device is arranged above the silicon rod bearing table, and includes a plurality of cutting wheels and a cutting line formed with at least one cutting line segment around the plurality of cutting wheels;

The automatic slot changing mechanism according to any one of claims 1 to 10.