Control method of slicing machine, computer readable storage medium and computer equipment

Abstract

The invention relates to the technical field of linear cutting, in particular to a control method of a slicing machine, a computer readable storage medium and computer equipment, the slicing machine comprises an in-place detection assembly, the in-place detection assembly comprises an in-place detection part, and the control method comprises the steps that a workpiece to be machined is fed; according to the detection result of the in-place detection component, whether the workpiece to be machined is fed in place or not is determined; wherein the detection result of the in-place detection component and the set thickness of the front-end thick sheet of the workpiece to be machined have a pre-mapping relation. By means of the structure, whether the workpiece (such as a silicon rod) to be machined is detected in place or not can be directly determined according to the detection result of the in-place detection part. If the thickness of the front-end thick sheet needs to be adjusted, only the detection result corresponding to the in-place detection component in the program needs to be adjusted. Therefore, the thickness of the thick sheet at the front end can be automatically measured according to actual requirements.

Description

Technical Field

[0001] This application relates to the field of wire cutting technology, specifically providing a control method for a slicing machine, a computer-readable storage medium, and a computer device. Background Technology

[0002] Equipment used to process hard and brittle materials (such as silicon rods) typically includes cutting machines, squaring machines, grinding machines, and slicing machines. Cutting machines are mainly used to cut long silicon rods into shorter ones (such as silicon rods with a circular cross-section, referred to as round rods). Squaring machines are mainly used to cut round rods into silicon rods with a rectangular cross-section (such as square rods) (referred to as square rods; if the square rods at this stage have not undergone grinding, they are usually called rough rods). Grinding machines are mainly used to make the surface precision of the rough rods meet the standards through grinding operations (if the square rods at this stage have met the surface precision standards after grinding, they are usually called finished rods). Slicing machines are mainly used to obtain thin silicon wafers for use from the finished rods through methods such as multi-wire cutting (wire mesh cutting).

[0003] The slicing machine primarily uses cutting wire (such as diamond wire, which is typically a cutting steel wire with tiny diamond particles embedded in its surface) to slice silicon rods. During the slicing process, to prevent issues like wafer breakage, a thicker wafer is usually pre-installed at the front end of the silicon rod to be processed; this can be called the front-end wafer. To ensure the correct size (thickness) of the front-end wafer, the common method is to adjust the position of the silicon rod by prying the wafer holder with a pry bar, determining the distance between the front end of the silicon rod and the first (coil) of diamond wire from the slicing machine, thus obtaining the ideal thickness of the front-end wafer. This method has limitations in dimensional determination due to fewer constraint factors and the manual intervention involved in the adjustment process, resulting in considerable room for improvement in adjustment accuracy. Furthermore, this method also suffers from drawbacks such as long adjustment time and the potential for damage to the silicon rod if handled carelessly. Summary of the Invention

[0004] This application aims to solve at least part of the above-mentioned technical problems and / or at least part of the above-mentioned technical problems. Specifically, it is able to automatically adjust the thickness of the front end of the workpiece waiting to be processed on the silicon rod when it is in place according to actual needs.

[0005] In a first aspect, this application provides a control method for a slicing machine, the slicing machine including a positioning detection component, the positioning detection component including a positioning detection part, the control method including: feeding a workpiece to be processed; determining whether the workpiece to be processed is in the correct position based on the detection result of the positioning detection part; wherein, the detection result of the positioning detection part has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed.

[0006] This configuration allows for direct determination of whether a workpiece (such as a silicon rod) has been detected in place using the positioning detection component. If the thickness of the front-end sheet needs adjustment, only the detection result corresponding to the positioning detection component in the program needs to be adjusted. In this way, the thickness of the front-end sheet can be automatically adjusted according to actual requirements.

[0007] It is understandable that those skilled in the art can determine the specific form of the mapping relationship between the thickness of the front-end thick sheet and the detection result of the positioning detection component according to actual needs. For example, it may be that there is a clear mapping relationship between the two (such as y = f(x)), or it may be that other variables (such as other variables related to silicon rods and slicing machines) need to be introduced to determine the mapping relationship (such as y = f(x1, x2, ..., xn)).

[0008] In one possible implementation of the control method for the slicer described above, the step of feeding the workpiece to be processed includes feeding the workpiece while it is mounted on a workpiece table; wherein the workpiece table has a workpiece table positioning surface, and the detection result of the positioning detection component has a pre-defined mapping relationship between the thickness of the front end of the workpiece to be processed and the workpiece table positioning surface.

[0009] This configuration allows for the constraint of the workpiece stage positioning surface related to the silicon rod, ensuring that the test results can reliably characterize the workpiece loading position.

[0010] In one possible implementation of the control method for the above-mentioned slicing machine, the slicing machine includes a shaft box, and the detection result of the positioning detection component has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed, the workpiece stage positioning surface, and the end face of the shaft box.

[0011] This configuration allows for the constraint of the end face of the shaft box associated with the slicer, ensuring that the test results can reliably characterize the workpiece loading position.

[0012] In one possible implementation of the control method for the slicer described above, the positioning detection component includes a main body, the positioning detection part is disposed on the main body, the main body also has a mechanical limiting surface, and the detection result of the positioning detection part has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed, the workpiece stage positioning surface, the end face of the shaft box, and the mechanical limiting surface.

[0013] This configuration allows for the use of mechanical limiting surfaces associated with the slicing machine to ensure that the test results reliably characterize the workpiece's loading position.

[0014] In one possible implementation of the control method for the above-mentioned slicing machine, the pre-defined mapping relationship between the detection result of the positioning detection component and the set thickness of the front end of the workpiece to be processed, the workpiece stage positioning surface, the end face of the shaft box, and the mechanical limiting surface is as follows:

[0015] L4=(L2-L3)-L1+B (1)

[0016] Wherein, B is the set thickness of the front end of the workpiece to be processed, L1 is the distance between the workpiece stage positioning surface and the end face of the workpiece to be processed, L2 is the distance between the end face of the shaft box and the mechanical limiting surface, L3 is the distance between the end face of the shaft box and the first cutting line corresponding to the front end of the workpiece, and L4 is the value determined according to the detection result.

[0017] This configuration provides a specific mapping relationship between the thickness of the front-end thick sheet and the detection result of the positioning detection component.

[0018] In one possible implementation of the control method for the slicer described above, the positioning detection component is a contact displacement sensor.

[0019] L4 = LA - LB (2)

[0020] Wherein, LA is the total compressible value of the contact displacement sensor, and LB is the detected value of the contact displacement sensor.

[0021] This configuration provides a possible structural form for the positioning detection component and a specific mapping relationship between its detection results and the thickness of the front-end thick plate.

[0022] In one possible implementation of the control method for the slicer described above, the slicer includes multiple fixed parts, and the positioning detection component includes a movable part that can be removed from any of the fixed parts, wherein the positioning detection component is located on the movable part.

[0023] This configuration ensures the reliability of the slicer's operation under various feeding methods.

[0024] In one possible implementation of the control method for the slicer described above, a first mounting structure is provided on the fixed part, and a second mounting structure is provided on the movable part. The fixed part and the movable part are fixedly connected based on the cooperation of the first mounting structure and the second mounting structure. The positioning detection component includes a locking component, which includes a locking operation end. The gap between the first mounting structure and the second mounting structure can be adjusted by means of the movement of the locking operation end.

[0025] This configuration ensures reliable mechanical positioning, thereby guaranteeing the repeatability of the L2 value. Those skilled in the art can determine the specific structural form of the first / second mounting structure based on actual needs and thus adjust the fit between the fixed and moving parts.

[0026] In one possible implementation of the control method for the slicer described above, the positioning detection component of the slicer includes a first mounting structure on the fixed portion and a second mounting structure on the movable portion. The fixed portion and the movable portion are fixedly connected based on the cooperation between the first mounting structure and the second mounting structure. The positioning detection component includes a locking component, which includes a locking operation end. The gap between the first mounting structure and the second mounting structure can be adjusted by means of the movement of the locking operation end.

[0027] This configuration ensures reliable mechanical positioning. Those skilled in the art can determine the specific structural form of the first / second mounting structure based on actual needs and thus adjust the fit between the fixed and moving parts.

[0028] In one possible implementation of the control method for the slicer described above, the locking assembly includes a locking operation end assembly and a locking structure disposed on the locking operation end assembly. The locking operation end assembly can drive the locking structure to move, thereby adjusting the gap.

[0029] In one possible implementation of the control method for the slicer described above, the locking operation end assembly includes the locking operation end and a screw, the locking operation end being able to drive the screw to move along its axial direction, and the locking structure being disposed on the screw.

[0030] With this configuration, the movement of the operating end can cause the screw to move along its axial direction, thereby adjusting the gap between the locking structure and the fixed part.

[0031] In one possible implementation of the control method for the slicer described above, the locking assembly includes: an elastic member disposed on the screw; and a locking nut disposed at the end of the screw away from the locking operation end.

[0032] This configuration ensures the locking reliability of the locking components.

[0033] In one possible implementation of the control method for the slicer described above, the locking assembly includes a locking anti-rotation assembly, which includes: a pressure plate disposed on the locking structure; and an anti-rotation positioning sleeve sleeved on the screw and having a positioning surface that can cooperate with the pressure plate, wherein the pressure plate cooperates with the positioning surface in the assembled state.

[0034] This configuration effectively prevents the locking assembly from rotating.

[0035] In one possible implementation of the control method for the slicer described above, the locking operation end can drive the screw to move along its axial direction by rotation, and the locking anti-rotation assembly includes an anti-rotation structure, which is disposed on the movable part near the operation end.

[0036] This configuration effectively prevents the relative rotation of the moving parts from occurring in the absence of external force.

[0037] In one possible implementation of the control method for the slicer described above, the second mounting structure is capable of sliding along the first mounting structure.

[0038] This configuration provides a possible way to install the moving and fixed parts in place.

[0039] In one possible implementation of the control method for the slicer described above, the locking assembly includes a connecting member, which allows the fixed portion and the movable portion to be connected to each other by means of the second mounting structure when the second mounting structure slides into place along the first mounting structure.

[0040] This configuration ensures the reliability of the connection between the fixed and moving parts; for example, the connecting components can be safety pins, screws, etc.

[0041] In one possible implementation of the control method for the slicer described above, the movable part includes: a main body, wherein the positioning detection component and the mechanical limiting surface are disposed on the main body; and an installation part, which is fixedly connected to or integrally formed with the main body; wherein the second installation structure is disposed on the installation part.

[0042] This configuration provides a possible structural form for the positioning detection component. For example, the mounting portion is a rectangular or strip-shaped structure, and the main body is a block-shaped structure located at one end of the mounting portion.

[0043] In a second aspect, this application provides a computer-readable storage medium including a memory adapted to store a plurality of program codes adapted to be loaded and executed by a processor to perform the control method of the slicer described in any of the preceding claims.

[0044] It is understood that the computer-readable storage medium has all the technical effects of the control method for the slicer described in any of the foregoing claims, and will not be repeated here.

[0045] Those skilled in the art will understand that all or part of the processes in the slicer control method of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which includes, but is not limited to, program code for executing the slicer control method described above. For ease of explanation, only the parts relevant to this application are shown. The computer program code can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc. It should be noted that the content included in the computer-readable storage medium can be appropriately added or removed according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable storage medium does not include electrical carrier signals and telecommunication signals.

[0046] In a third aspect, this application provides a computer device including a memory and a processor, the memory being adapted to store a plurality of program codes adapted to be loaded and executed by the processor to perform the control method of the slicer described in any of the preceding claims.

[0047] It is understood that this device possesses all the technical effects of the control method for the slicer described in any of the foregoing embodiments, and will not be elaborated further here. This device can be a computer-controlled device comprising various electronic devices. Attached Figure Description

[0048] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which:

[0049] Figure 1 A schematic diagram of a silicon rod including a workpiece stage is shown.

[0050] Figure 2 A partial structural schematic diagram of a silicon rod including a workpiece stage is shown.

[0051] Figure 3 A schematic diagram of a silicon rod including a workpiece stage is shown.

[0052] Figure 4 A schematic diagram of a silicon rod including a workpiece stage in the loading position is shown.

[0053] Figure 5 A schematic diagram illustrating the detection principle of a contact displacement sensor is shown.

[0054] Figure 6 A schematic diagram illustrating the principle of the L1 measurement scenario is shown;

[0055] Figure 7 A schematic diagram of the measurement scenario for L1 is shown;

[0056] Figure 8 A schematic diagram of the measurement principle of L2 is shown;

[0057] Figure 9 This diagram shows a schematic representation of the position detection component according to an embodiment of the present application before it is assembled with the fixed part.

[0058] Figure 10 This diagram shows a schematic representation of the positioning detection component according to an embodiment of the present application after it is assembled with a fixed part.

[0059] Figure 11 This diagram shows a structural schematic of the locking component of a positioning detection component according to an embodiment of this application;

[0060] Figure 12 This diagram shows a cross-sectional view of a positioning detection component according to an embodiment of this application;

[0061] Figure 13 This is a cross-sectional schematic diagram of a positioning detection component according to an embodiment of the present application in a locked state;

[0062] Figure 14 This is a cross-sectional schematic diagram of a positioning detection component according to an embodiment of the present application in the released state;

[0063] Figure 15 This is a three-dimensional structural diagram of a positioning detection component according to an embodiment of the present application before it is assembled with a fixed part;

[0064] Figure 16 This invention provides a perspective view of the positioning detection component according to an embodiment of the present application after assembly with the fixed part; and

[0065] Figure 17 This is a schematic diagram showing the structure of a positioning detection component according to an embodiment of the present application in a state where it is assembled with a fixed part.

[0066] List of reference numerals in the attached diagram:

[0067] 1. Silicon rod; 11. End face; 12.

[0068] 2. Workpiece stage; 21. Workpiece stage positioning surface;

[0069] 3. First loop of diamond wire;

[0070] 4. Rear axle box; 41. Rear axle box end face;

[0071] 5. Arrival detection component; 51. Arrival detection part; 52. Mechanical limiting surface;

[0072] 61. First measuring device; 62. Second measuring device; 63. Silicon rod positioning device; 64. Lifting device; 65. Pallet;

[0073] 71. Calibration fixture; 72. Feed mechanism; 73. Measuring tool;

[0074] 81. Fixing base (fixed part); 811. Mounting slot (first mounting structure);

[0075] 82. Sliding support (moving part); 821. Main body; 8221. Mounting rail (second mounting structure); 822. Mounting part;

[0076] 83. Safety pin;

[0077] 84. Gap;

[0078] 85. Locking assembly;

[0079] 851. Locking handle assembly (locking operating end assembly); 8511. Handle (operating end); 8512. Screw;

[0080] 852. Elastic components;

[0081] 853. Locking block (locking moving parts);

[0082] 8541. Pressure plate; 8542. Anti-rotation positioning sleeve; 8543. Anti-rotation retaining ring;

[0083] 855. Anti-rotation lock nut;

[0084] 856. Gasket. Detailed Implementation

[0085] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0086] It should be noted that in the description of this application, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0087] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0088] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, the principles of slicers, which are well-known to those skilled in the art, have not been described in detail in order to highlight the main points of this application.

[0089] The following mainly refers to Figures 1 to 17 This application is to be described in at least a portion thereof.

[0090] A slicing machine slices silicon rods using diamond wire wound around a cutting mechanism. Specifically, a slicing machine mainly includes an upper feeding mechanism and a lower cutting mechanism that work together. It also includes a wire take-up and unwrap mechanism that works with the cutting mechanism to achieve the reciprocating motion of the diamond wire, and loading and unloading components for loading and unloading the silicon rods. Typically, the cutting mechanism consists of three main cutting rollers (two on top and one on the bottom) arranged in an inverted triangle. The main cutting rollers have densely machined annular grooves. By densely winding diamond wire around the corresponding annular grooves, a wire mesh capable of continuously cutting multiple positions on the silicon rod is formed. The slicing process of a slicing machine is roughly as follows: Before loading, the silicon rod is mounted on a workpiece stage (such as a wafer tray) using a rod-attaching process. After the silicon rod, including the workpiece stage, is in place, it is fixed to the feed mechanism. Then, the feed mechanism is fed vertically (close to the cutting mechanism). Through the reciprocating motion of the diamond wire on the cutting mechanism, the diamond wire between the two main cutting rollers above can perform a slicing operation on the silicon rod close to the cutting mechanism in a wire saw manner.

[0091] Obviously, the above structure is only an exemplary description. Those skilled in the art can flexibly choose the structural form of the slicer according to actual needs. For example, the cutting mechanism may only include two cutting main rollers, and the allowed feeding method of the slicer may be feeding only at the rear end or feeding at both the front and rear ends.

[0092] I. Definition of Data:

[0093] Main reference Figures 1 to 3 In one possible implementation, the silicon rod 1 is mounted on the workpiece stage 2, and diamond wire wound around the cutting main roller can cut the silicon rod. Figure 1 The rightmost ring of diamond wire is designated as the first ring of diamond wire 3. According to... Figure 2 As shown in the background art, when the silicon rod is in place, a certain distance needs to be reserved between the left end face 11 (the end face away from the placement detection component) and the first coil of diamond wire wound on the cutting mechanism. This distance corresponds to the thickness of the front end sheet 12 of the silicon rod, which is denoted as B. That is, the total length L of the silicon rod includes two parts: the thickness B of the front end sheet and the cuttable length (or effective slicing length) A. The workpiece stage positioning surface 21 used to achieve the placement of the silicon rod is a vertical plane located on the right side of the workpiece stage 2. The distance between the left end face of the silicon rod and the workpiece stage positioning surface is denoted as L1.

[0094] Main reference Figure 4 and Figure 5In one possible implementation, the distance between the flange end face (hereinafter referred to as the rear axle box end face 41) of the slicer's rear axle box 4 and the mechanical limiting surface 52 is denoted as L2, and the distance between the rear axle box end face and the first ring of diamond wire 3 of the slicer is denoted as L3.

[0095] Continue to refer to Figure 4 and Figure 5 In one possible implementation, the slicing machine is equipped with a positioning detection component 5. Through the cooperation between the positioning detection component and the positioning surface on the workpiece stage (such as a vertical surface located downstream along the feeding direction above the crystal tray, hereinafter referred to as the workpiece stage positioning surface), the silicon ingot to be processed can be ensured to be in place. Based on this, the diamond wire can be used to slice the silicon ingot by the feed motion of the feed mechanism. The positioning detection component typically includes a main body with a limiting structure. The cooperation between the limiting structure and the workpiece stage ensures the silicon ingot is in place, thus ensuring its positioning within the slicing machine.

[0096] In one possible implementation, the main body is provided with a positioning detection component 51 and a mechanical limiting surface 52. In this example, the positioning detection component is a contact displacement sensor. When the workpiece stage positioning surface abuts against the contact displacement sensor (generating a preset compression amount), it indicates that the loading is in place. After the loading is in place, assuming the workpiece stage continues to move along the loading direction, it will abut against the mechanical limiting surface. Therefore, in this example, the function of the mechanical limiting surface can be understood as mechanical positioning protection. That is, during normal use, the workpiece stage positioning surface of this application does not contact, or more precisely, cannot contact, the mechanical limiting surface.

[0097] In this application, the slicing machine ensures that the silicon rod mounted on the workpiece stage is properly positioned based on L4, which is determined according to the detection value of the contact displacement sensor. Let L4 be the distance between the mechanical limiting surface 52 and the pressing position of the contact displacement sensor, as determined by the detection value of the contact displacement sensor.

[0098] Specifically, after assembly, the following preliminary calibration needs to be performed: using an external object such as a flat plate to compress the probe of the contact displacement sensor to the mechanical limiting surface, thereby determining the total compressible value of the contact displacement sensor, denoted as LA.

[0099] Based on the above calibration, the probe compression value of the contact displacement sensor when the material is in place is recorded as LB (corresponding to the pressing position of the aforementioned contact displacement sensor). It can be seen that the distance L4 between the aforementioned mechanical limiting surface and the pressing position of the contact displacement sensor is LA-LB.

[0100] II. Data Determination:

[0101] As can be seen from the aforementioned data, the data related to the silicon rod to be sliced ​​includes L1 (the distance between the workpiece stage positioning surface and the front end face of the silicon rod) and the thickness B of the front end of the silicon rod. The data related to the slicing machine includes L2 (the distance between the rear axle box end face and the mechanical limiting surface) and L3 (the distance between the rear axle box end face and the first turn of diamond wire of the slicing machine). The data related to the detection value (LB) of the contact displacement sensor is L4.

[0102] The thickness of the front end of the silicon rod can be flexibly determined (set) according to actual needs. For example, the thickness of the front end can be set to 1.5mm. The slicing machine requires manual wiring. After the wiring is completed, L3 can be directly measured. L4 can be calculated based on the detection value of the contact displacement sensor. The following mainly explains how L1 and L2 are determined.

[0103] (1) Determining L1:

[0104] Main reference Figure 6 and Figure 7 In one possible implementation, L1 is determined (measured) as follows:

[0105] The first measuring device 61 and the second measuring device 62 are respectively used to detect the position data of the workpiece stage positioning surface and the front end face of the silicon rod corresponding to L1. Specifically, relying on the automated sticking line, the first measuring device 61 and the second measuring device 62 are respectively fixed at both ends of the silicon rod positioning device in the automated sticking line. In this example, the first measuring device 61, which is mainly used to measure the position data of the workpiece stage positioning surface, includes one sensor, and the second measuring device 62, which is used to measure the position data of the front end face of the silicon rod, includes multiple sensors. Specifically, since the front end face of the silicon rod may have problems such as tilting or the end face not being a geometrically planar plane, four sensors roughly distributed at the four vertices of the front end face of the silicon rod are used to collect the data of the front end face of the silicon rod.

[0106] After the silicon rod has completed its initial bonding (bonding the silicon rod to the crystal holder), it is transported to the silicon rod positioning device 63 via roller conveyor. The lifting device 64 then raises to lift the silicon rod 1. Once lifted into position, the two side support plates 65 move towards the center to clamp the workpiece stage. The lifting device then retracts, and the silicon rod, having completed its initial bonding, is then fixed in place by the support plates. With the silicon rod lifted by the support plates, its front end enters the measurement range of the second measuring device 62. Subsequently, the cylinder of the first measuring device extends, causing a sensor corresponding to the second measuring device to reach the measurement position on the workpiece stage positioning surface. In this way, L1 can be determined based on the two detection results.

[0107] The aforementioned data processing for determining the position of the front end face of the silicon rod based on the detection values ​​of the four sensors may include, but is not limited to:

[0108] 1) Based on the detection values ​​of the four sensors, calculate four L1 values ​​in combination with the first measuring device, and take the minimum value among the four L1 values.

[0109] 2) Based on the relative positions of the four sensors and the detection values ​​of each sensor, the slope of the front end face of the silicon rod is calculated. Combined with the specifications of the silicon rod, the minimum distance between the front end face of the silicon rod and the workpiece stage positioning surface can be calculated. The minimum value is taken as L1.

[0110] (2) Determining L2:

[0111] L2 is the distance between the mechanical limiting surface and the rear axle box end face. The determination (measurement) of L2 can be achieved through methods including, but not limited to, the following two:

[0112] Method 1: After the entire machine is assembled, the positioning detection component of the slicer and the rear axle box are both fixed parts. Therefore, after installation, the distance between the mechanical limiting surface and the end face of the rear axle box can be determined, and L2 can be considered as a theoretical value.

[0113] Method 2: Use a calibration fixture (a precision-machined part of known length) for measurement.

[0114] Reference Figure 8 , Figure 8 A schematic diagram illustrating the measurement principle of L2 is shown. In one possible implementation, L2 is determined (measured) as follows:

[0115] Using the calibration fixture 71 to simulate the normal position after mounting, the end face of the corresponding side (left side in the figure) of the calibration fixture contacts the mechanical limiting surface 52. The feed mechanism 72 of the slicer drives the calibration fixture to move downward until the calibration fixture enters the diameter range of the rear axle box end face. Using measuring tools 73 such as calipers, the distance between the end face of the corresponding side (right side in the figure) of the calibration fixture and the end face of the rear axle box is measured. Adding this to the length of the calibration fixture (known), L2 can be obtained.

[0116] Current slicing machines now feature both front-end and rear-end feeding capabilities, allowing for flexible slicing operations through automatic rear-end loading and manual front-end loading. Correspondingly, this necessitates the rapid switching of the slicing machine's mechanical limiting surfaces, i.e., the establishment of a mechanical limiting surface corresponding to front-end loading (located at the rear) and a mechanical limiting surface corresponding to rear-end loading (located at the front).

[0117] In one possible implementation, a fixing block (e.g., referred to as the first fixing block and the second fixing block, respectively) is installed at the front and rear ends corresponding to the feed mechanism 72. The sliding support is installed on either fixing block in a switchable manner. In this way, the rapid forward and backward switching of the mechanical limiting surface 52 is reflected in how to achieve rapid disassembly and installation of the sliding support on the first / second fixing block. For example, if the sliding support is initially installed on the first fixing block at the front end of the feed mechanism (automatic feeding at the rear end, front end limiting), when switching to manual front end feeding, the sliding support needs to be quickly removed and installed on the second fixing block at the rear end of the feed mechanism. Then, the sliding support can be fixed to the second fixing block using a positioning pin or the like.

[0118] To ensure smooth installation between the sliding support and the first / second fixed blocks, a large gap is typically present between their mounting surfaces. Consequently, when the material is in place, the sliding support will displace due to the force exerted upon contact, causing a change in the position of the mechanical limiting surface. This results in poor repeatability of each workpiece stage positioning and poor repeatability of the L2 value, further failing to meet the accuracy requirements for flexible control of the front-end thick sheet as specified in this application. Therefore, this application provides a new positioning detection component to ensure the control accuracy requirements of the front-end thick sheet.

[0119] Main reference Figures 9 to 17 In one possible implementation, each fixed block 81 is provided with a mounting groove 811, and the sliding support 82 is provided with a mounting track 8221 adapted to the mounting groove and capable of sliding within the mounting groove. After the track is slid into the fixed support along the mounting groove, the two can be fixedly connected by fasteners such as safety pins 83. In this example, the sliding support 82 includes a main body portion 821 and a mounting portion 822 located below the main body portion. The mounting track 8211 is disposed on the mounting portion 821, and the aforementioned positioning detection component 51 and mechanical limiting surface 52 are both disposed on the mounting portion 822. Exemplarily, a columnar structure is provided on the mounting portion, and the end face of the columnar structure is the mechanical limiting surface 52.

[0120] As mentioned above, the large gap 84 between the mounting slot 811 and the mounting rail 821 leads to poor repeatability of the L2 measurement. Therefore, in this application, the positioning detection component also includes a locking component 85. The locking component 85 is mainly used to ensure that the sliding support 82 can be smoothly disassembled from the fixed block 81 by releasing it through the locking handle 851, and to ensure that the sliding support 82 and the fixed block 81 have a small gap 84 in the assembled state by locking it through the locking handle 851, thereby ensuring the repeatability accuracy of the L2 value.

[0121] In one possible implementation, the locking assembly 85 mainly includes a locking operation end assembly (such as a locking handle assembly 851), an elastic component (such as a disc spring 852, a spring, etc.), and a locking movable component (such as a locking block 853, a locking plate, etc.). For example, the locking handle assembly 851 includes a locking handle 8511 and a screw 8512. The disc spring is sleeved on the screw, and a corresponding mounting space for the disc spring is provided within the sliding support. The end of the handle near the screw has an eccentric circular structure. This means that when the operator rotates the handle, the center position of the eccentric circle changes. As the center position changes, the screw moves, and the locking block 853 fixed to the screw moves along the length of the screw.

[0122] Obviously, the above-described locking handle is only an exemplary description. Those skilled in the art can adopt other structural forms with operation to drive the locking active components to move according to actual needs. For example, any form of locking handle that can switch between locked and unlocked states can be adopted. The principle of locking and unlocking and the corresponding structure can be flexibly adjusted according to actual needs.

[0123] When the locking handle is loosened or tightened, it moves the locking block, thus changing the gap between the locking block and the sliding support. Specifically:

[0124] When the locking handle is released, the locking block moves backward (to the left in the diagram) under the action of the disc spring. The gap between the locking block and the sliding support increases, and there is no constraint on the sliding direction of the fixed block, thus ensuring that the sliding support can be smoothly removed from the fixed base. Specifically, when the feeding method changes, remove the safety pin, pry the locking handle to the released position, and remove the stop assembly, including the sliding support and the locking handle, from one side.

[0125] When the locking handle is locked, the locking block moves forward (to the right in the figure) under the action of the disc spring, and the gap between the locking block and the sliding support becomes smaller. In this way, the gap between the sliding support and the fixed block is small when they are fixed to each other.

[0126] In one possible implementation, the locking assembly 85 includes a locking anti-rotation assembly 854, which is mainly used to implement the anti-rotation function of the locking assembly to ensure the locking reliability of the locking assembly.

[0127] In one possible implementation, the locking anti-rotation assembly 854 includes a pressure plate 8541 and an anti-rotation positioning sleeve 8542 connected to each other. One end of the anti-rotation positioning sleeve 8542 is fitted onto the screw, while the other end is freely accommodated within a pre-reserved installation space on the locking block. The anti-rotation positioning sleeve has a flat surface that can mate with the pressure plate, which can be fixed to the locking block by means of fasteners such as screws. In the assembled state, the pressure plate mates with the flat surface on the anti-rotation positioning sleeve, thus achieving the anti-rotation function. Specifically, it effectively prevents the locking handle from rotating relative to the sliding support.

[0128] In one possible implementation, the locking anti-rotation assembly 854 further includes an anti-rotation structure (such as an anti-rotation retaining ring 8543, an anti-rotation baffle, etc.) installed on the locking handle. Through the cooperation between the anti-rotation retaining ring and the locking handle, it is ensured that the installed locking handle will not cause the anti-loosening locking nut to loosen due to rotation.

[0129] In one possible implementation, the locking assembly 85 includes a lock nut 855, which is disposed at the end of the screw away from the locking handle, such as by the lock nut 855 abutting against the side of the locking block away from the locking handle (right side surface in the figure) via a washer 856.

[0130] In this way, by making the above improvements through the aforementioned positioning detection components (mainly including the structures that need to be switched, excluding the fixed block (set on the slicer) (such as sliding supports, locking components, safety pins, etc.)), while ensuring that the sliding support can be quickly disassembled to facilitate quick switching between front and rear feeding, once the sliding support is installed on the corresponding first / second fixed block and the locking handle is locked, it can be ensured that the mechanical limiting surface 51 will not be displaced when the feeding is in place, thereby ensuring the numerical repeatability accuracy of L2.

[0131] III. Control of material loading in place:

[0132] Based on the above data, we know that L4 = L1 - L2 - L3 + B. Therefore, B can be deduced from the detection value of the contact displacement sensor. That is, when B is set, there will be a corresponding detection value (LB) for the contact displacement sensor. There is a definite mapping relationship between the detection value of the contact displacement sensor and the set thickness of the front end sheet. Based on the set B, the detection value LB that the contact displacement sensor should have when the material is in place is determined. Thus, when the detection value of the contact displacement sensor is the same as the detection value that should be present when the material is in place, it can be determined that the material is in place. Specifically, in the current state, the thickness of the front end sheet of the silicon rod to be cut is the same as the preset value. Taking the preset thickness of the front end sheet of the silicon rod as 1.5mm as an example, if the thickness of the front end sheet of the silicon rod needs to be adjusted to 1.8mm, then it is only necessary to determine the detection value LB that the new contact displacement sensor should have when the material is loaded in place according to the aforementioned mapping relationship. Then, the silicon rod can be loaded in place with the new front end sheet thickness through real-time detection.

[0133] Based on the automated rod bonding line, a measuring device equipped with sensors is fixed at both ends of the silicon rod positioning device in the rod bonding line. A fixture of known length is used to calibrate the relative distance between the sensors at both ends. After calibration, the silicon rod, after initial curing, is transported to the silicon rod positioning device according to the normal operating procedure of the rod bonding line. Data on L1 is collected and transmitted to the MES (Manufacturing Execution System). The collected data is written into the QR code information affixed to the silicon rod, and the silicon rod is placed in the automated storage and retrieval system (AS / RS) for cutting. Before the slicing machine cuts the silicon rod, the QR code affixed to the silicon rod is scanned to obtain L1. L2 is the theoretical set value, L3 is entered after manual measurement (re-measured after each rewiring, not after each cut), and B is the set standard value for the front-end thickness. The actual distance between the front end of the silicon rod and the first ring of diamond wire can be manually measured (e.g., denoted as B'), and the difference between B' and B is calculated as a compensation amount to revise L2. The revised L2 is then input into the slicing machine as a fixed value. The algorithm L4 = (L2 - L3) - L1 + B was written in the slicer's control program, thus completing the calibration of the dimensions at each position (initial calibration) and the program setting of the slicer.

[0134] Based on this, L4 is calculated using the acquired L1, L2, L3, and B. The slicing machine then pushes the L4 value to the control section of its automatic loading and unloading program, pushing the silicon rod to the designated position corresponding to L4. Reaching this designated position indicates that the silicon rod has been loaded into place according to the set front-end thickness specifications. In a specific example, the silicon rod loading process is as follows: First, the silicon rod is moved to the initial push-pull position. Then, the silicon rod moves forward in the current loading direction. After reaching a certain preset position (close to the designated position), the silicon rod is decelerated until the sensor's detection value corresponds to L4 (LB), indicating that the silicon rod has been loaded into place.

[0135] Once the material is in place, the feed mechanism can clamp the workpiece stage (fixing the silicon rod to the feed mechanism), and then the feed mechanism can perform the feed operation (bringing the bottom of the silicon rod close to the wire mesh), thus completing the one-cut slicing operation of the silicon rod.

[0136] As can be seen, in the preferred embodiment of the application, the detection value of the contact displacement sensor ensures that the silicon rod in place has the set thickness of the front end wafer. Based on this, situations such as wafer breakage during slicing can be effectively avoided. The mapping relationship between the thickness of the front end wafer and the detection value of the contact displacement sensor, constructed through constraints of multiple factors, can more stably guarantee the thickness control accuracy of the front end wafer. Therefore, when the thickness of the front end wafer needs to be adjusted, only the detection value corresponding to the contact displacement sensor indicating that the material is in place needs to be adjusted. Thus, high-precision adjustment of the front end wafer thickness can be easily achieved without manual intervention, which is beneficial to the advancement of automated production in slicing machines. Furthermore, the setting of the placement detection component ensures the repeatability accuracy of the L2 value, thereby guaranteeing the adjustment accuracy of the front end wafer thickness.

[0137] It should be noted that although the steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effect of this application, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously or in other orders, and some steps can be added, replaced or omitted.

[0138] It should be noted that although the control method of the slicer constructed in the above specific manner has been described as an example, those skilled in the art will understand that this application is not limited thereto. In fact, users can flexibly adjust the relevant steps and parameters in the steps according to actual application scenarios and other circumstances.

[0139] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A control method for a slicer, characterized in that, The slicer includes a positioning detection component, the positioning detection component includes a positioning detection part, and the control method includes: Load the workpiece to be processed; Based on the detection results of the positioning detection component, it is determined whether the workpiece to be processed has been properly loaded. The detection result of the positioning detection component has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed.

2. The control method for a slicer according to claim 1, characterized in that, The process of loading the workpiece to be processed includes: The workpiece is loaded while it is mounted on the workpiece table; The workpiece stage has a workpiece stage positioning surface, and the detection result of the positioning detection component has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed and the workpiece stage positioning surface.

3. The control method for a slicer according to claim 2, characterized in that, The slicing machine includes a shaft box, and the detection result of the positioning detection component has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed, the workpiece stage positioning surface, and the end face of the shaft box.

4. The control method for a slicer according to claim 3, characterized in that, The positioning detection component includes a main body, and the positioning detection part is disposed on the main body. The main body also has a mechanical limiting surface. The detection result of the positioning detection part has a pre-defined mapping relationship with the thickness of the front end of the workpiece to be processed, the workpiece stage positioning surface, the end face of the shaft box, and the mechanical limiting surface.

5. The control method for a slicer according to claim 4, characterized in that, The pre-defined mapping relationship between the detection result of the positioning detection component and the pre-set thickness of the front end of the workpiece to be processed, the workpiece stage positioning surface, the end face of the shaft box, and the mechanical limiting surface is as follows: L4=(L2-L3)-L1+B (1) Wherein, B is the set thickness of the front end of the workpiece to be processed, L1 is the distance between the workpiece stage positioning surface and the end face of the workpiece to be processed, L2 is the distance between the end face of the shaft box and the mechanical limiting surface, L3 is the distance between the end face of the shaft box and the first cutting line corresponding to the front end of the workpiece, and L4 is the value determined according to the detection result.

6. The control method for a slicer according to claim 5, characterized in that, The positioning detection component is a contact displacement sensor. L4 = LA - LB (2) Wherein, LA is the total compressible value of the contact displacement sensor, and LB is the detected value of the contact displacement sensor.

7. The control method for a slicer according to claim 1, characterized in that, The slicer includes multiple fixed parts, and the positioning detection component includes a movable part that can be removably mounted on any of the fixed parts. The positioning detection component is located in the active part.

8. The control method for a slicer according to claim 7, characterized in that, The fixed portion is provided with a first mounting structure, and the movable portion is provided with a second mounting structure. The fixed portion and the movable portion are fixedly connected based on the cooperation of the first mounting structure and the second mounting structure. The positioning detection component includes a locking component, which includes a locking operation end, and the gap between the first mounting structure and the second mounting structure can be adjusted by means of the movement of the locking operation end.

9. The control method for a slicer according to claim 8, characterized in that, The locking assembly includes a locking operation end assembly and a locking structure disposed on the locking operation end assembly. The locking operation end assembly can drive the locking structure to move, thereby adjusting the gap.

10. The control method for a slicer according to claim 9, characterized in that, The locking assembly includes a locking operation end assembly and a locking structure disposed on the locking operation end assembly. The locking operation end assembly can drive the locking structure to move, thereby adjusting the gap.

11. The control method for a slicer according to claim 10, characterized in that, The locking operation end assembly includes the locking operation end and the screw. The locking operation end can drive the screw to move along its axial direction, and the locking structure is disposed on the screw.

12. The control method for a slicer according to claim 11, characterized in that, The locking assembly includes: An elastic member disposed on the screw; and A locking nut is located at the end of the screw away from the locking operation end.

13. The control method for a slicer according to claim 12, characterized in that, The locking assembly includes a locking anti-rotation component, which includes: Pressure plate, which is disposed in the locking structure; and An anti-rotation positioning sleeve is fitted onto the screw and has a positioning surface that can mate with the pressure plate. In the assembled state, the pressure plate engages with the positioning surface.

14. The control method for a slicer according to claim 13, characterized in that, The locking operation end can drive the screw to move along its axial direction by rotation. The locking anti-rotation assembly includes an anti-rotation structure, which is disposed on the movable part near the operating end.

15. The control method for a slicer according to claim 8, characterized in that, The second mounting structure can slide along the first mounting structure.

16. The control method for a slicer according to claim 15, characterized in that, The locking assembly includes a connecting component. When the second mounting structure slides into place along the first mounting structure, the fixed part and the movable part can be connected to each other by means of the connecting member.

17. The control method for a slicer according to claim 8, characterized in that, The activity includes: The main body portion, wherein the positioning detection component is disposed on the main body portion; and The mounting portion is fixedly connected to or integrally formed with the main body portion; The second mounting structure is disposed in the mounting portion.

18. A computer-readable storage medium comprising a memory adapted to store a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by a processor to perform the control method of the slicer according to any one of claims 1 to 17.

19. A computer device, the device comprising a memory and a processor, the memory being adapted to store a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by the processor to perform the control method of the slicer according to any one of claims 1 to 17.

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