A method and system for matched cutting of ingots

Abstract

The application discloses a method and system for matching and cutting crystal rods, and the method comprises the following steps: measuring the length of a crystal rod, storing the length data of the crystal rod in a first database; measuring the length of a cutting line net, storing the length data of the cutting line net in a second database, the cutting line net being used for slicing the crystal rod; calculating the data matched in the first database and the second database, and transporting the crystal rod matched with the length of the cutting line net to a cutting machine provided with the cutting line net to complete the cutting. The system comprises a first and second input module, a matching module and a cutting machine, the first input module is used for inputting and storing the length data of the crystal rod in the first database, the second input module is used for inputting and storing the length data of the cutting line net in the second database, the matching module is used for calculating the data matched in the first and second databases, and obtaining the crystal rod matched with the current cutting line net, and the cutting machine cuts the matched crystal rod. The application greatly improves the cutting efficiency and reduces the waste of the crystal rod.

Description

Technical Field

[0001] This application relates to the field of single-crystal silicon rod cutting, and more particularly to a method and system for matching and cutting crystal rods. Background Technology

[0002] Monocrystalline silicon rods are a very important semiconductor material in the field of solar energy utilization. After being produced, monocrystalline silicon rods need to be sliced ​​to be used as materials for making batteries. The general process of cutting crystal rods is to place multiple crystal rods on a trolley after they are bonded together and transported to the vicinity of the cutting machine to wait for cutting. The cutting machine is equipped with a cutting wire mesh for cutting crystal rods. The cutting wire mesh is wound in staggered circles around the cutting blade assembly of the cutting machine. After the crystal rod is placed on the cutting machine, the cutting machine executes the cutting program, and the crystal rod is cut into slices in one cut by the multiple circles of cutting wire mesh.

[0003] In the actual cutting process, the length of the cutting wire mesh needs to match the length of the crystal ingot. The actual length of the crystal ingots produced is not entirely consistent; sometimes longer, sometimes shorter. If the crystal ingot is too long than the cutting wire mesh, the uncut ends will result in waste. If the crystal ingot is too short, the risk of wire mesh breakage increases, and the cutting quality is also poor. After production, the crystal ingots are transported to the cutting machine without being measured. Cutting personnel can only select from a limited number of ingots transported from nearby trolleys, limiting their choices. Once the previous crystal ingot is cut, if no available ingot matches the current wire mesh length, the cutting personnel have to repeatedly cut and reconnect wires to adjust the wire mesh length to match the crystal ingot, greatly reducing cutting efficiency. When the crystal ingot is slightly longer than the cutting wire mesh, the cutting personnel may choose not to change the wire mesh length and cut directly, resulting in waste.

[0004] Therefore, there is an urgent need for a method and system for matching and cutting crystal rods to solve the above problems. Summary of the Invention

[0005] This invention provides a method and system for matching and cutting crystal rods. Its main purpose is to solve the problem that in existing crystal rod cutting, the crystal rod length and the wire mesh length do not match, requiring repeated adjustments to the wire mesh length, which greatly reduces cutting efficiency and may also cause crystal rod waste.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This application provides a method for matching and cutting crystal rods, including the following steps:

[0008] S1. After the crystal rod is bonded to the crystal, the length of the crystal rod is measured and the length data of the crystal rod is stored in the first database.

[0009] S2. Measure the length of the cutting wire mesh and store the length data of the cutting wire mesh in a second database. The cutting wire mesh is used to slice the crystal rod.

[0010] S3. Calculate and match the data in the first database and the second database, transport the crystal rod matching the length of the cutting wire mesh to the cutting machine equipped with the cutting wire mesh and complete the cutting.

[0011] Preferably, after step S3, step S4 is further included: when the cutting wire mesh breaks while cutting the crystal rod, the cutting wire mesh is rearranged on the cutting machine according to the current length of the crystal rod.

[0012] Preferably, in step S1, after measuring the length of the crystal rod, the crystal rods are stored in the storage workshop in the order of measurement.

[0013] Preferably, the storage workshop is provided with at least one storage unit, which is used to store the crystal rods. Each storage unit is provided with a specific mark, and the mark of the storage unit is stored in the first database in a one-to-one correspondence with the length data of the crystal rods stored in the storage unit.

[0014] Preferably, the cutting machine is equipped with a specific identification number, which is stored in the second database. In step S2, the length data of the cutting wire mesh stored in the second database corresponds one-to-one with the identification number.

[0015] Preferably, in step S2, the condition for measuring the length of the cutting wire mesh and recording it into the second database is that the length of the cutting wire mesh changes after the previous crystal rod is cut.

[0016] Preferably, the factors that cause the length of the cutting wire mesh to change include, but are not limited to: cutting the cutting wire mesh when its length is longer than the crystal rod being cut, and lengthening the cutting wire mesh when its length is shorter than the crystal rod being cut.

[0017] Preferably, in step S3, a matching range is set, and the length data of each of the cutting wire meshes in the second database is searched in the first database based on the matching range, and the crystal rod that is closest in the matching range is transported to the cutting machine equipped with the corresponding cutting wire mesh.

[0018] Preferably, when no crystal rod is found within the matching range, the crystal rod closest in length to the cutting wire mesh is obtained, the length of the cutting wire mesh is changed to match the crystal rod, and the crystal rod is cut using the cutting wire mesh with the changed length.

[0019] This application also provides a crystal rod matching and cutting system, including a first input module, a second input module, a matching module, and a cutting machine. The first input module is used to input the length data of the crystal rod and store the length data of the crystal rod in a first database. The second input module is used to input the length data of the cutting wire mesh and store the length data of the cutting wire mesh in a second database. The matching module is used to calculate the data matching the first database and the second database and obtain the crystal rod that matches the current cutting wire mesh. The cutting machine is equipped with the cutting wire mesh and is used to cut the matched crystal rod.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] This application provides a method and system for matching and cutting crystal rods. The system algorithm obtains the most suitable crystal rods and transfers them to the cutting machine, avoiding the inefficiency of manual selection. Manual selection can only pick a few crystal rods on a trolley, while this method measures the length and records it into the database after the crystal rods are produced and bonded. The large sample size allows for the efficient acquisition of crystal rods with closer lengths, preventing the need to continuously adjust the cutting wire mesh length due to insufficient samples in traditional methods. This saves adjustment time and makes full use of the cut crystal rods, preventing waste. Attached Figure Description

[0022] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0023] Figure 1 This is a flowchart of Embodiment 1 of the present invention.

[0024] Figure 2 This is a flowchart of Embodiment 2 of the present invention. Detailed Implementation

[0025] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] The inventors discovered that in the field of single-crystal silicon rod cutting technology, existing technologies can only manually select crystal rods suitable for the current cutting wire mesh length from a limited sample, which is extremely inefficient. Moreover, because the number of existing crystal rods is insufficient, it is necessary to repeatedly cut and connect wires to adjust the wire mesh length, which may also lead to the waste of single-crystal silicon rods.

[0029] In view of this, refer to Figure 1 and Figure 2 This application provides a method and system for matching and cutting crystal rods. By inputting the length data of the crystal rod and the cutting wire mesh, and matching the two through an algorithm, the automatic matching at the software level is fully realized, avoiding the problems of low efficiency and small sample size in manual selection. This solves the above problems. The following is a description with reference to specific embodiments.

[0030] Example 1:

[0031] This embodiment provides a method for matching and cutting crystal rods, such as... Figure 1 This includes the following steps:

[0032] S1. After the crystal rod is bonded, the length of the crystal rod is measured and the length data of the crystal rod is stored in the first database. The single crystal silicon rod cannot be directly cut after it is produced. It needs to go through the crystal bonding process, that is, to bond the connecting device to the end of the crystal rod so that it can be placed on the cutting machine for cutting. After the crystal rod is bonded, the length of the crystal rod is measured and this length data is stored in the first database. The first database contains a large amount of length data of the produced crystal rods, with a large sample size, which is convenient for subsequent calculation and matching.

[0033] The production and cutting of crystal rods cannot be perfectly matched in time. After the length data of the produced crystal rods is measured, they need to be stored in the storage workshop in the order of measurement. When the crystal rods need to be cut, the corresponding crystal rods are retrieved from the storage workshop. The crystal rods are stored in the workshop in order to facilitate quick retrieval of crystal rods and prevent the crystal rods from being stored in a mess and unable to find the corresponding crystal rods.

[0034] Specifically, the storage workshop has at least one storage unit. After the crystal rod is measured, it is stored in the storage unit. One storage unit stores one crystal rod. It should be noted that each storage unit has a specific mark. The mark of each storage unit is stored in the first database. The length data of the crystal rod and the mark of the storage unit are stored in the first database in a one-to-one correspondence. When a specific crystal rod suitable for the wire mesh length is matched, it is only necessary to obtain the mark of the storage unit corresponding to this crystal rod, and then find the location of the corresponding storage unit through this mark, so as to quickly obtain the corresponding crystal rod, which greatly improves efficiency.

[0035] S2. Measure the length of the cutting wire mesh and store the length data in the second database. The cutting wire mesh is used to slice the crystal rod. The cutting wire mesh should match the length of the crystal rod during slicing. If the cutting wire mesh is longer than the crystal rod length, it may affect the slicing quality and increase the risk of wire mesh breakage. The cutting wire mesh is set on the cutting machine. It should be noted that each cutting machine has a specific identification number, which is stored in the second database. After measuring and storing the length of the cutting wire mesh, the length data of the cutting wire mesh and the identification number of the cutting machine are in one-to-one correspondence. When matching the cutting wire mesh on the current cutting machine, the matched crystal rod will be transported to the position of the cutting machine corresponding to that identification number. In particular, in some embodiments, a transport system with identification function can be used. This transport system can match the markings and positions of the storage unit and the identification number and position of the cutting machine, automatically orienting and transporting specific crystal rods to specific cutting machines.

[0036] S3. Calculate and match the data in the first and second databases, and transport the crystal rod with the matching cutting wire mesh length to the cutting machine equipped with the cutting wire mesh for cutting. The length data of the crystal rod to be cut is already stored in the first database. At this time, by setting a matching range, and under the condition that cost efficiency and other factors allow, the length value of the currently measured cutting wire mesh is fluctuated within a certain range, and a search is performed in the first database. There may be multiple crystal rods whose lengths are within this matching range. It is necessary to select the closest or most matching crystal rod from the multiple searched crystal rods and transport it to the corresponding cutting machine for cutting.

[0037] In particular, there may be situations where no crystal ingots are found within the matching range of the current cutting wire mesh due to factors such as insufficient ingot inventory, a small number of crystal ingots in a specific range, or a small matching range. In order not to affect the production schedule, it is necessary to search within the first database by expanding the search range and transfer the closest matching crystal ingot to the corresponding cutting machine for cutting. Since the matching crystal ingot is the result of expanding the search range, direct cutting may result in problems such as wire breakage or waste. Therefore, it is necessary to cut or connect the current cutting wire mesh to change its length to fit the crystal ingot before completing the cutting.

[0038] Example 2:

[0039] like Figure 2 As shown, this embodiment includes the following steps:

[0040] S1. After the crystal ingots are bonded, their length is measured and stored in the first database. After the length data is measured, the produced crystal ingots are stored in the storage workshop according to the order of measurement. When a crystal ingot needs to be cut, the corresponding ingot is retrieved from the storage workshop. The storage workshop has at least one storage unit. After the crystal ingot is measured, it is stored in the storage unit. One storage unit holds one crystal ingot, and the crystal ingot is identified by a marker on the storage unit.

[0041] S2. Measure the length of the dicing wire mesh and store the length data in the second database. The dicing wire mesh is used to slice the crystal ingot. It should be noted that when the wire mesh length remains unchanged after dicing the previous crystal ingot and moving on to the next, there is no need to measure the length of the dicing wire mesh; the search is performed directly based on the previously measured length data stored in the second database. The condition for needing to measure the length of the dicing wire mesh is when the length changes. In this case, the length of the dicing wire mesh is remeasured and stored in the second database, overwriting the previous length data.

[0042] When a search of the first database based on the length of the cutting wire mesh fails to find a matching ingot, the length of the cutting wire mesh needs to be adjusted. Of course, production schedule arrangements, production quality optimization, and other reasons may also necessitate changing the length of the cutting wire mesh. The cutting wire mesh needs to be adjusted in length to match the length of the ingot to be cut. This mainly includes the following situations: when the length of the cutting wire mesh is longer than the ingot to be cut, the longer part of the cutting wire mesh needs to be cut to prevent poor cutting quality; when the length of the cutting wire mesh is shorter than the ingot to be cut, the cutting wire mesh needs to be extended with tape to avoid wasting the ingot due to the shorter cutting wire mesh.

[0043] After the cutting wire mesh length is changed, the length is measured again based on the changed cutting wire mesh and entered into the second database. This length data is then bound to the identification number of the cutting machine to facilitate the subsequent transfer of the cut crystal rod.

[0044] S3. Calculate and match the data in the first and second databases, and transport the ingot with the matching cutting wire mesh length to the cutting machine equipped with the cutting wire mesh for cutting. The algorithm will transfer the best matching ingot within a certain range to the corresponding machine. When no ingot is found within the range, the search range needs to be expanded. After the ingot is found, the length of the cutting wire mesh is changed to adapt to the ingot to be cut.

[0045] S4. When a wire breakage occurs during the cutting of the crystal rod, the cutting wire mesh is rearranged on the cutting machine according to the current length of the crystal rod. Due to various objective factors, wire breakage may occur during crystal rod cutting. After a breakage occurs, the wire mesh is re-wired and re-cut based on the current length of the crystal rod being cut.

[0046] Example 3:

[0047] This application also provides a crystal rod matching and cutting system, including a first input module, a second input module, a matching module, and a cutting machine. The system includes two client modules. Since the crystal rod production workshop and the crystal rod cutting workshop are located in two separate spaces, a first input module needs to be set up in the crystal rod production workshop to input the length of the crystal rods. The first input module is connected to a first database and can store the input crystal rod length data in the first database. In addition, a second input module is set up in the crystal rod cutting workshop. The second input module is connected to a second database and can store the input crystal rod length data in the second database. The matching module can perform calculation and matching on the data in the first and second databases. Specifically, the matching module searches in the first database based on the currently input cutting wire mesh length data. After a matching crystal rod is found, the marker of the storage unit corresponding to the crystal rod is obtained. The transfer personnel can find the corresponding crystal rod for transfer through this marker. In addition, after a successful match, the identification number of the cutting machine corresponding to the current cutting wire mesh is also obtained by the transfer personnel in the second database, so that the crystal rod can be transferred to the specific cutting machine.

[0048] In some embodiments, a first input module at the ingot production site can input the ingot length and display a specific ingot demand notification for the cutting machine. The notification displays the required ingot data, its corresponding storage location, and the location of the cutting machine that issued the request. A second input module at the cutting machine can input the cutting wire mesh length, display the stored ingot length data, and issue a matching request, sending a material requisition to the ingot storage workshop. After the cutting machine obtains the required ingot, it performs the cutting.

[0049] The above embodiments illustrate only one implementation of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for matching and cutting crystal rods, characterized in that, Includes the following steps: S1. After the crystal rod is bonded to the crystal, the length of the crystal rod is measured and the length data of the crystal rod is stored in the first database. S2. Measure the length of the cutting wire mesh and store the length data of the cutting wire mesh in a second database. The cutting wire mesh is used to slice the crystal rod. S3. Calculate and match the data in the first database and the second database, transport the crystal rod matching the length of the cutting wire mesh to the cutting machine equipped with the cutting wire mesh and complete the cutting; The cutting machine is equipped with a specific identification number, which is stored in the second database. In step S2, the length data of the cutting wire mesh stored in the second database corresponds one-to-one with the identification number. In step S2, the condition for measuring the length of the cutting wire mesh and recording it into the second database is that the length of the cutting wire mesh changes after the previous crystal rod is cut. In step S3, a matching range is set, and the length data of each cutting wire mesh in the second database is searched in the first database based on the matching range. The crystal rod that is closest in the matching range is transported to the cutting machine with the corresponding cutting wire mesh. The above method is applied to a crystal rod matching and cutting system. The system includes a first input module, a second input module, a matching module, and a cutting machine. The first input module is used to input the length data of the crystal rod and store the length data of the crystal rod in a first database. The second input module is used to input the length data of the cutting wire mesh and store the length data of the cutting wire mesh in a second database. The matching module is used to calculate the data matching the first database and the second database and obtain the crystal rod that matches the current cutting wire mesh. The cutting machine is equipped with the cutting wire mesh and is used to cut the matched crystal rod.

2. The method for matching and cutting crystal rods as described in claim 1, characterized in that, Step S4 is included after step S3: when the cutting wire mesh breaks while cutting the crystal rod, the cutting wire mesh is rearranged on the cutting machine according to the current length of the crystal rod.

3. The method for matching and cutting crystal rods as described in claim 1, characterized in that, In step S1, after measuring the length of the crystal rod, the crystal rods are stored in the storage workshop in the order of measurement.

4. The method for matching and cutting crystal rods as described in claim 3, characterized in that, The storage workshop is equipped with at least one storage unit for storing the crystal rods. Each storage unit is marked with a specific label, and the label of the storage unit is stored in the first database in a one-to-one correspondence with the length data of the crystal rods stored in the storage unit.

5. The method for matching and cutting crystal rods as described in claim 1, characterized in that, Factors that cause the length of the cutting wire mesh to change include, but are not limited to: cutting the cutting wire mesh when its length is longer than the crystal rod being cut, and lengthening the cutting wire mesh when its length is shorter than the crystal rod being cut.

6. The method for matching and cutting crystal rods as described in claim 1, characterized in that, If no crystal rod is found within the matching range, the crystal rod closest in length to the cutting wire mesh is obtained, the length of the cutting wire mesh is changed to match the crystal rod, and the crystal rod is cut using the cutting wire mesh with the changed length.

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