Linear cutting system
By integrating centralized liquid supply, heat exchange, and filtration equipment, the problems of high consumption and frequent maintenance of the liquid supply cylinder and heat exchange device of the slicing machine are solved, realizing efficient recycling of cutting fluid, improving production efficiency and reducing costs.
Patent Information
- Application Number
- CN202520119647.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In the current crystalline silicon cell production process, the high power consumption and frequent maintenance of the liquid supply cylinder and heat exchange device of the slicing machine lead to low production efficiency and high costs.
By employing centralized liquid supply equipment, centralized heat exchange equipment, and centralized filtration equipment, multiple wire cutting machines are connected through liquid pipelines to achieve centralized supply, heat exchange, and filtration of cutting fluid, thereby reducing the number of devices and maintenance frequency.
It significantly shortened the maintenance cycle, improved production efficiency, reduced equipment power consumption and maintenance costs, and increased production efficiency while reducing production costs.
Smart Images
Figure CN223834817U_ABST
Abstract
Description
Technical Field
[0001] This application relates to wire EDM transducer technology, and more particularly to a wire EDM system. Background Technology
[0002] Solar energy is an inexhaustible and clean renewable energy source for humankind. Solar photovoltaic power generation is one of the fastest-growing and most dynamic research fields in recent years. Crystalline silicon cells are one of the important components of solar panels, therefore, the quality of crystalline silicon cells is crucial. Crystalline silicon cells are obtained by cutting crystalline silicon rods. First, a squaring machine is used to cut the cylindrical crystalline silicon rods into square rods with rectangular cross-sections. Then, a slicing machine is used to slice the square rods into silicon wafers. Finally, a dicing machine is used to dice the silicon wafers into smaller pieces, thus creating crystalline silicon cells.
[0003] Both squaring machines and slicing machines utilize cutting lines for cutting during the process, and spray cutting fluid onto the cutting area for cooling and to wash away silicon powder adhering to the cutting lines, thereby reducing silicon powder on the silicon surface and improving surface quality. Taking the slicing machine as an example, each slicing machine is equipped with a fluid supply cylinder and a heat exchange device. The fluid supply cylinder provides cutting fluid to the cutting area, and the cutting fluid in the cutting area is collected, filtered, and then cooled and recycled after passing through the heat exchange device.
[0004] In mass production using multiple slicers, the liquid supply cylinder and heat exchange device in each slicer are operating, resulting in high power consumption, high energy consumption, and high production costs. Furthermore, the liquid supply cylinder and heat exchange device in each slicer require periodic shutdown maintenance. For mass production, the total downtime of all slicers is very long, significantly impacting production efficiency. Summary of the Invention
[0005] To address one of the aforementioned technical deficiencies, this application provides a wire cutting system.
[0006] According to a first aspect of the embodiments of this application, a wire cutting system is provided, comprising: a centralized liquid supply device, a centralized heat exchange device, a centralized filtration device, and at least two wire cutting machines;
[0007] The centralized liquid supply equipment, centralized heat exchange equipment, and centralized filtration equipment are connected in sequence through liquid pipelines, and then connected to the cutting chambers of each wire cutting machine through liquid pipelines; the cutting fluid collection devices in each wire cutting machine are connected to the centralized liquid supply equipment through liquid pipelines.
[0008] The technical solution provided in this application embodiment includes a wire cutting system comprising a centralized liquid supply device, a centralized heat exchange device, a centralized filtration device, and at least two wire cutting machines. The centralized liquid supply device, centralized heat exchange device, and centralized filtration device are sequentially connected via liquid pipelines, and then connected to the cutting chambers of each wire cutting machine via liquid pipelines to spray cutting fluid into the cutting chambers. The cutting fluid collection device in each wire cutting machine is connected to the centralized liquid supply device via liquid pipelines to recover and recycle the cutting fluid, achieving centralized collection, centralized heat exchange, and centralized filtration of the cutting fluid required by the wire cutting machine. This shortens maintenance time within a maintenance cycle, significantly reducing downtime and greatly improving production efficiency. Furthermore, the reduced number of devices requiring maintenance also lowers maintenance costs, thereby reducing production costs. Attached Figure Description
[0009] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0010] Figure 1 A simplified schematic diagram of the wire cutting system provided in the embodiments of this application;
[0011] Figure 2 This is a schematic diagram of the structure of the centralized heat exchange device in the wire cutting system provided in the embodiments of this application.
[0012] Figure label:
[0013] 1-Centralized liquid supply equipment; 2-Centralized heat exchange equipment; 21-Cold water tank; 211-Exhaust port; 212-Cold air inlet; 22-Heat absorber; 23-Cutting fluid circulation pipeline; 231-Water inlet pipeline; 232-Water return pipeline; 233-Cooling branch; 24-Temperature detection device; 3-Centralized filtration equipment; 4-Wire cutting machine. Detailed Implementation
[0014] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0015] like Figure 1 As shown, this embodiment provides a wire cutting system, including: a centralized liquid supply device 1, a centralized heat exchange device 2, a centralized filtration device 3, and at least two wire cutting machines 4. The wire cutting machine 4 can be a squaring machine or a slicing machine, used for cutting hard and brittle material rods, such as silicon rods.
[0016] This embodiment uses a slicing machine as an example. The slicing machine has a cutting chamber, inside which is a main cutting roller and a cutting wire wound around the main cutting roller. The cutting wire moves at high speed to cut the silicon rod. A cutting fluid spraying device is provided at the top of the cutting chamber for spraying cutting fluid into the cutting chamber. A cutting fluid collection device is provided at the bottom of the cutting chamber for collecting the cutting fluid.
[0017] The centralized liquid supply device 1, centralized heat exchange device 2, and centralized filtration device 3 are connected in sequence via liquid pipelines, and then connected to the cutting chambers of each wire cutting machine 4 via liquid pipelines. The cutting fluid output from the centralized liquid supply device 1 is cooled by the centralized heat exchange device 2, then filtered by the centralized filtration device 3, and then supplied to each wire cutting machine 4 to spray into the cutting chamber to cool the cutting chamber, reduce the temperature of the cutting wire, and wash away the silicon powder adhering to the cutting wire, thereby improving the quality of the cutting surface.
[0018] The centralized liquid supply equipment 1 can supply liquid to at least two wire cutting machines 4. The cutting fluid collection device in each wire cutting machine 4 is connected to the centralized liquid supply equipment 1 through a liquid pipeline, so that the cutting fluid circulates between each wire cutting machine 4 and the centralized liquid supply equipment 1 and can be reused.
[0019] The wire cutting machine 4 does not require the installation of liquid supply cylinders, heat exchange devices, or other components. At least the wire cutting machine 4 is centrally supplied with liquid, centrally heat-exchanged, and centrally filtered through centralized liquid supply equipment 1, centralized heat exchange equipment 2, and centralized filtration equipment 3. The waste cutting fluid in each wire cutting machine 4 is collected, treated, and recycled, thus realizing a large-scale circulation of cutting fluid.
[0020] The technical solution provided in this embodiment includes a wire cutting system comprising a centralized liquid supply device, a centralized heat exchange device, a centralized filtration device, and at least two wire cutting machines. The centralized liquid supply device, the centralized heat exchange device, and the centralized filtration device are connected sequentially via liquid pipelines, and then connected to the cutting chambers of each wire cutting machine via liquid pipelines to spray cutting fluid into the cutting chambers. The cutting fluid collection device in each wire cutting machine is connected to the centralized liquid supply device via liquid pipelines to recycle and reuse the cutting fluid, thereby achieving centralized collection, centralized heat exchange, and centralized filtration of the cutting fluid required by the wire cutting machine.
[0021] In existing technologies, the liquid supply cylinder and heat exchange device of each slicer require periodic shutdown for maintenance, with downtime typically lasting 4 hours. When a large number of slicers are involved in mass production, the cumulative downtime becomes very long; for example, 10 slicers would require 40 hours of downtime, significantly impacting production efficiency.
[0022] The solution provided in this embodiment requires only a 4-hour downtime within a maintenance cycle for the centralized heat exchange and filtration equipment before production can resume. This significantly reduces downtime and greatly improves production efficiency. Furthermore, the smaller number of devices requiring maintenance also lowers maintenance costs, thereby reducing overall production costs.
[0023] Furthermore, this embodiment employs centralized heat exchange and filtration, which reduces the number of components within the slicer and lowers the power consumption of the equipment, thereby reducing energy consumption and further reducing production costs.
[0024] The aforementioned centralized fluid supply equipment includes a finished product tank, which forms a cutting fluid circulation path with the wire cutting machines. Specifically, the finished product tank, centralized heat exchange equipment 2, and centralized filtration equipment 3 are connected sequentially through liquid pipelines to each wire cutting machine 4. The cutting fluid from each wire cutting machine 4 is collected and uniformly sent to the finished product tank, allowing the cutting fluid to circulate and be reused.
[0025] The heat exchange devices mentioned above can be cooling towers or air conditioners, used to cool the cutting fluid. The air conditioner can be an air-source heat pump, utilizing the evaporation and condensation of air to achieve heat exchange.
[0026] A flow meter and a solenoid valve are installed on the liquid pipeline in the cutting chamber. The flow meter detects the flow rate of the cutting fluid, and the opening degree of the solenoid valve controls the flow rate to meet the cutting needs of the cutting chamber. For example, when the cutting wire speed is high or the silicon rod diameter is large, the flow rate of the cutting fluid can be increased.
[0027] Based on the above technical solutions, this embodiment provides an implementation method for a centralized heat exchange device 2: as follows Figure 2 As shown, the centralized heat exchange equipment 2 includes a cold water tank 21, a heat absorber 22, and a cutting fluid circulation pipeline 23. The cold water tank 21 contains a low-temperature liquid. The cutting fluid circulation pipeline 23 passes through the cold water tank 21, and the heat absorber 22 is located inside the cold water tank 21 and surrounds the outside of the cutting fluid circulation pipeline 23 to cool the cutting fluid flowing through the pipeline 23.
[0028] One specific embodiment: The cutting fluid circulation pipeline 23 includes: an inlet pipeline 231, a return pipeline 232, and at least one cooling branch 233 connected between the inlet pipeline 231 and the return pipeline 232, with the heat absorber 22 surrounding the outside of the cooling branch 233.
[0029] Specifically, the heat absorber 22 is a heat absorber plate with at least one through hole. A cooling branch 233 passes through the through hole, with one end of the cooling branch 233 connected to the water inlet pipe 231 and the other end connected to the water return pipe 232. The cutting fluid enters from the end of the water inlet pipe 231 and flows sequentially along the cooling branch 233 until it is discharged from the water return pipe 232.
[0030] Furthermore, temperature detection devices 24 are installed in the inlet pipe 231 and / or the return pipe 232 to detect the temperature of the cutting fluid. Specifically, a temperature detection device 24 is installed on the inlet pipe 231 to detect the temperature of the cutting fluid before heat exchange; a temperature detection device 24 is installed on the return pipe 232 to detect the temperature of the cutting fluid after heat exchange. The temperature of the liquid in the cold water tank 21 is adjusted by using the temperature values detected by these two temperature detection devices 24, thereby adjusting the heat exchange effect of the cutting fluid.
[0031] In addition, a temperature sensing device 24 can also be installed on the cooling branch 233.
[0032] Furthermore, the top of the cold water pool 21 is provided with an exhaust port 211, and the side of the cold water pool 21 is provided with a cold air port 212, so as to keep the pressure inside the cold water pool 21 balanced with the atmospheric pressure.
[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0037] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A wire cutting system, characterized in that, include: Centralized liquid supply equipment, centralized heat exchange equipment, centralized filtration equipment, and at least two wire cutting machines; The centralized liquid supply equipment, centralized heat exchange equipment, and centralized filtration equipment are connected in sequence through liquid pipelines, and then connected to the cutting chambers of each wire cutting machine through liquid pipelines; the cutting fluid collection devices in each wire cutting machine are connected to the centralized liquid supply equipment through liquid pipelines.
2. The wire cutting system according to claim 1, characterized in that, The centralized fluid supply equipment includes: a finished product tank, and a cutting fluid circulation path is formed between the finished product tank and the wire cutting machine.
3. The wire cutting system according to claim 2, characterized in that, Centralized heat exchange equipment includes: cooling towers and / or air conditioners.
4. The wire cutting system according to claim 3, characterized in that, The air conditioner is an air-source heat pump air conditioner.
5. The wire cutting system according to claim 1, characterized in that, The liquid pipeline in the cutting chamber is equipped with a flow meter and a solenoid valve.
6. The wire cutting system according to any one of claims 1-5, characterized in that, The centralized heat exchange equipment includes: a cold water tank, a heat absorber, and a cutting fluid circulation pipeline; the cutting fluid circulation pipeline passes through the cold water tank, and the heat absorber is located inside the cold water tank and is arranged around the outside of the cutting fluid circulation pipeline.
7. The wire cutting system according to claim 6, characterized in that, The cutting fluid circulation pipeline includes: an inlet pipeline, a return pipeline, and at least one cooling branch connecting the inlet pipeline and the return pipeline; a heat-absorbing element is arranged on the outside of the cooling branch.
8. The wire cutting system according to claim 7, characterized in that, The heat-absorbing component is a heat-absorbing plate with at least one through hole. A cooling branch passes through the through hole, with one end of the cooling branch connected to the inlet water pipe and the other end connected to the return water pipe.
9. The wire cutting system according to claim 7, characterized in that, Temperature detection devices are installed in the inlet and / or return water pipes.
10. The wire cutting system according to claim 1, characterized in that, The wire cutting machine is a slicing machine.