Gas mixing control device and processing control system

Abstract

The utility model belongs to the technical field of laser processing, and discloses a gas mixing control device and a processing control system. The gas mixing control device comprises a gas mixing module, an oxygen module, a main gas conveying pipeline and a control module. The gas mixing module comprises a first gas supply pipeline, a second gas supply pipeline and a gas mixing tank, the first gas supply pipeline and the second gas supply pipeline supply air and nitrogen to the gas mixing tank respectively, a first flow control assembly and a second flow control assembly are installed on the first gas supply pipeline and the second gas supply pipeline respectively, and the gas mixing tank is connected with a first gas conveying pipeline and a detection pipeline. A first opening and closing control assembly and an oxygen content detection piece are mounted on each of the two parts; the oxygen module comprises a third gas supply pipeline used for supplying oxygen, and a second opening and closing control assembly is arranged on the third gas supply pipeline. A barometer is mounted on the main gas conveying pipeline; the control module is in communication connection with the first flow control assembly, the second flow control assembly, the first opening and closing control assembly, the second opening and closing control assembly, the oxygen content detection piece and the barometer.

Description

Technical Field

[0001] This utility model relates to the field of laser processing technology, and in particular to a gas mixing control device and a processing control system. Background Technology

[0002] In laser processing, such as laser cutting and laser welding, the use of assist gases is necessary to ensure smooth processing and optimize the processing results. Assist gases are mixtures of air, oxygen, and nitrogen. When cutting or welding workpieces of different materials and thicknesses, it is necessary to match the appropriate concentration, pressure, and flow rate of the gas mixture to meet the requirements of laser processing. Some workpieces only require a mixture of air and nitrogen to form an assist gas, or only oxygen as an assist gas. Utility Model Content

[0003] The purpose of this invention is to provide a gas mixing control device and processing control system that can dynamically optimize the mixing ratio of each part of the auxiliary gas, supply gas on demand, and has a simple structure and low cost.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A gas mixing control device, comprising:

[0006] A gas mixing module includes a first gas supply line, a second gas supply line, and a gas mixing tank. The first gas supply line supplies air to the gas mixing tank, and the second gas supply line supplies nitrogen to the gas mixing tank. A first flow control component for adjusting the air flow rate is installed on the first gas supply line, and a second flow control component for adjusting the nitrogen flow rate is installed on the second gas supply line. The gas delivery end of the gas mixing tank is connected to the first gas supply line. An oxygen content detector and a first opening and closing control component for adjusting the opening and closing of the first gas supply line are provided on the first gas supply line. The gas mixing tank is also connected to a detection line, and an oxygen content detector is provided on the detection line.

[0007] An oxygen module includes a third gas supply line for supplying oxygen, and a second opening and closing control component for adjusting the opening and closing of the third gas supply line is provided on the third gas supply line.

[0008] The main gas pipeline, the first gas pipeline and the third gas supply pipeline are connected to the gas inlet end of the main gas pipeline, and a barometer is installed on the main gas pipeline;

[0009] The control module is communicatively connected to the first flow control component, the second flow control component, the first opening and closing control component, the second opening and closing control component, the oxygen content detection device, and the barometer.

[0010] Preferably, the first flow control component includes a first flow proportional valve and a first check valve arranged in sequence, the first flow proportional valve being communicatively connected to the control module, and the opening degree of the first flow proportional valve being adjustable.

[0011] Preferably, the second flow control component includes a second flow proportional valve and a second check valve arranged sequentially, the second flow proportional valve being communicatively connected to the control module, and the opening degree of the second flow proportional valve being adjustable.

[0012] Preferably, the first opening and closing control component includes a first control valve and a third check valve arranged in sequence. The first control valve is communicatively connected to the control module and has a switchable open state and a closed state.

[0013] Preferably, the second opening and closing control component includes a second control valve and a fourth check valve. The second control valve is communicatively connected to the control module and has a switchable open state and a closed state.

[0014] Preferably, the gas mixing module further includes:

[0015] A pressure reducing valve is provided on the detection pipeline and located between the oxygen content detection element and the gas mixing tank.

[0016] Preferably, the gas mixing module further includes:

[0017] A temperature and humidity sensor is installed on the detection pipeline. The temperature and humidity sensor is communicatively connected to the control module. The temperature and humidity sensor is used to detect the dew point temperature of the gas in the mixing tank.

[0018] A refrigerated dryer is installed on the first air supply pipeline. The refrigerated dryer is communicatively connected to the control module. The refrigerated dryer is used to cool the air in the first air supply pipeline to below the dew point temperature.

[0019] Preferably, the gas mixing module further includes:

[0020] A plurality of first filters are disposed on the first air supply line, and the first filters are used to filter impurities in the air in the first air supply line.

[0021] Preferably, a second filter is provided on the main gas pipeline, which is used to filter impurities in the gas in the main gas pipeline.

[0022] A processing control system, characterized in that it includes a parameter setting module and a gas mixing control device as described above, wherein the parameter setting module is communicatively connected to the gas mixing control device.

[0023] The beneficial effects of this utility model are:

[0024] This gas mixing control device includes a mixing module, an oxygen module, a main gas supply pipeline, and a control module. The mixing module includes a first gas supply pipeline, a second gas supply pipeline, and a mixing tank. The first gas supply pipeline supplies air to the mixing tank, and the second gas supply pipeline supplies nitrogen to the mixing tank. A first flow control component for regulating air flow is installed on the first gas supply pipeline, and a second flow control component for regulating nitrogen flow is installed on the second gas supply pipeline. The gas supply end of the mixing tank is connected to the first gas supply pipeline. An oxygen content detector and a first opening / closing control component for regulating the opening and closing of the first gas supply pipeline are installed on the first gas supply pipeline. The gas tank is also connected to a detection pipeline, which is equipped with an oxygen content detector; the oxygen module includes a third gas supply pipeline, which is used to supply oxygen, and a second opening and closing control component is installed on the third gas supply pipeline to regulate its opening and closing; the first gas transmission pipeline and the third gas supply pipeline are connected to the inlet end of the main gas transmission pipeline, and a barometer is installed on the main gas transmission pipeline; the control module is communicatively connected to the first flow control component, the second flow control component, the first opening and closing control component, the oxygen content detector, and the barometer.

[0025] This gas mixing control device feeds data from an oxygen content detector and a barometer to the control module, enabling real-time regulation of the first flow control component, the second flow control component, the first opening and closing control component, and the second opening and closing control component. This dynamically optimizes the mixing ratio, flow rate, and pressure of air, nitrogen, and oxygen, ensuring that the processing conditions always match the process requirements.

[0026] Compared to related technologies that connect air, nitrogen, and oxygen to the gas supply end of the mixing tank through three separate pipelines and control the opening and closing of the three pipelines separately according to the mixing requirements, this invention uses a first and a second opening and closing control component to control the opening and closing of the mixing module and the oxygen module with the main gas supply pipeline, respectively, to achieve on-demand gas supply. When the auxiliary gas is only oxygen, only the first opening and closing control component needs to be closed, without the need to separately control the opening and closing of the first and second gas supply pipelines. When the auxiliary gas is a mixture of air and nitrogen, closing the second opening and closing control component can cut off the oxygen supply, making the structure relatively simple. Furthermore, in related technologies, when switching the auxiliary gas from a mixture of air and nitrogen to pure oxygen, the air and nitrogen pipelines need to be closed, and the remaining gas in the mixing tank needs to be purged before pure oxygen can be delivered. However, the gas mixing control device provided by this invention operates independently by having an oxygen module for delivering oxygen and a mixing module for delivering air and nitrogen, based on the type of auxiliary gas. Switching between auxiliary gas types only requires controlling the first and second opening / closing control components, which is simple, quick, and avoids significant waste of gas resources. This gas mixing control device enables dynamic configuration of the auxiliary gas during laser processing, significantly improving processing quality and efficiency, offering good economic benefits, and is suitable for laser processing scenarios involving various materials. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the gas mixing control device provided by this utility model;

[0028] Figure 2 This is a schematic diagram of the communication connection of the processing control system provided by this utility model.

[0029] In the picture:

[0030] 100. Laser processing head;

[0031] 1. First air supply line; 11. First flow control assembly; 111. First flow proportional valve; 112. First check valve; 12. Refrigerated dryer; 13. First filter; 14. Air tank;

[0032] 2. Second gas supply line; 21. Second flow control assembly; 211. Second flow proportional valve; 212. Second check valve; 22. Nitrogen tank;

[0033] 3. Mixing tank; 31. First gas supply pipeline; 311. First opening and closing control component; 3111. First control valve; 3112. Third check valve; 32. Detection pipeline; 321. Oxygen content detection device; 322. Pressure reducing valve; 323. Temperature and humidity sensor; 33. Main gas supply pipeline;

[0034] 4. Third gas supply line; 41. Second opening and closing control assembly; 411. Second control valve; 412. Fourth check valve; 42. Oxygen cylinder;

[0035] 5. Main gas pipeline; 51. Barometer; 52. Second filter;

[0036] 6. Control module;

[0037] 7. Parameter setting module. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] In laser processing, such as laser cutting and laser welding, the use of assist gases is necessary to ensure smooth processing and optimize the processing results. Assist gases are mixtures of air, oxygen, and nitrogen. When cutting or welding workpieces of different materials and thicknesses, it is necessary to match the appropriate concentration, pressure, and flow rate of the gas mixture to meet the requirements of laser processing. Some workpieces only require a mixture of air and nitrogen to form an assist gas, or only oxygen as an assist gas.

[0043] like Figure 1 , Figure 2 As shown, this embodiment provides a gas mixing control device, which includes a gas mixing module, an oxygen module, a main gas supply pipeline 5, and a control module 6. The gas mixing module includes a first gas supply pipeline 1, a second gas supply pipeline 2, and a gas mixing tank 3. The first gas supply pipeline 1 supplies air to the gas mixing tank 3, and the second gas supply pipeline 2 supplies nitrogen to the gas mixing tank 3. A first flow control component 11 for adjusting the air flow rate is installed on the first gas supply pipeline 1, and a second flow control component 21 for adjusting the nitrogen flow rate is installed on the second gas supply pipeline 2. The gas supply end of the gas mixing tank 3 is connected to the first gas supply pipeline 31. An oxygen content detector 321 and a first opening / closing control component 311 for adjusting the opening and closing of the first gas supply pipeline 31 are provided on the first gas supply pipeline 31. The gas mixing tank is also connected to... The detection pipeline is equipped with an oxygen content detection device; the oxygen module includes a third gas supply pipeline 4, which is used to supply oxygen, and a second opening and closing control component 41 for adjusting the opening and closing of the third gas supply pipeline 4 is installed on the third gas supply pipeline 4; the first gas transmission pipeline 31 and the third gas supply pipeline 4 are connected to the air inlet end of the main gas transmission pipeline 5, and a barometer 51 is installed on the main gas transmission pipeline 5; the control module 6 is communicatively connected to the first flow control component 11, the second flow control component 21, the first opening and closing control component 311, the second opening and closing control component 41, the oxygen content detection device 321, and the barometer 51.

[0044] The operator can set the required auxiliary gas type (such as a mixture of pure oxygen, air and nitrogen or a mixture of air, oxygen and nitrogen), oxygen concentration, nitrogen concentration, flow rate and pressure to the control module 6 according to the material and thickness of the workpiece.

[0045] First, let's take a mixture of air and nitrogen as the auxiliary gas as an example. In this case, control module 6 adjusts the first opening / closing control component 311 to the open state, connecting the mixing module to the main gas supply line 5; control module 6 adjusts the second opening / closing control component 41 to the closed state, disconnecting the oxygen module from the main gas supply line 5. Control module 6 adjusts the opening degree of the first flow control component 11 and the second flow control component 21 according to the calibrated values ​​to regulate the air and nitrogen flow rates. Air and nitrogen are respectively supplied to the mixing tank 3 through the first gas supply line 1 and the second gas supply line 2 for mixing. The mixed gas enters the first gas supply line 31 from the gas supply end of the mixing tank 3. The oxygen content detector 321 detects the oxygen concentration in the mixed gas in real time. The mixed gas is then supplied to the main gas supply line 5 through the first gas supply line 31. The pressure gauge 51 detects the pressure value of the mixed gas in real time. The oxygen content detector 321 and the barometer 51 respectively feed back the actual values ​​to the control module 6. The control module 6 uses the actual values ​​of oxygen concentration and pressure to deduce the actual value of nitrogen concentration. It compares each actual value with each calibrated value. If there is a deviation between the actual value and the calibrated value, the control module 6 automatically adjusts the opening of the first flow control component 11 and the second flow control component 21 to rebalance the ratio of air to nitrogen. The main gas pipeline 5 delivers the mixed gas to the laser processing head 100 as an auxiliary gas for processing.

[0046] When the auxiliary gas is a mixture of air, nitrogen, and oxygen, the control module 6 adjusts the first opening / closing control component 311 and the second opening / closing control component 41 to the open state. At this time, the mixed gas in the mixing module and the oxygen flow together into the main gas supply pipeline 5. The oxygen content detector 321 detects the oxygen concentration in the mixed gas in real time, and the barometer 51 detects the pressure value of the gas after secondary mixing in real time. The oxygen content detector 321 and the barometer 51 respectively feed back the detected actual values ​​to the control module 6. The control module 6 deduces the actual nitrogen concentration from the actual oxygen concentration and the actual pressure value, compares each actual value with each calibrated value, and if there is a deviation between the actual value and the calibrated value, the control module 6 automatically adjusts the opening degree of the first flow control component 11 and the second flow control component 21, as well as the opening and closing of the second opening / closing control component 41, to rebalance the ratio of air, nitrogen, and oxygen. The main gas supply pipeline 5 delivers the secondary mixed gas to the laser processing head 100 as an auxiliary gas for auxiliary processing.

[0047] When the auxiliary gas is pure oxygen, the control module 6 adjusts the first opening and closing control component 311 to the closed state and adjusts the second opening and closing control component 41 to the open state. Oxygen is delivered from the third gas supply pipeline 4 to the main gas supply pipeline 5. The main gas supply pipeline 5 delivers pure oxygen to the laser processing head 100 as an auxiliary gas for auxiliary processing.

[0048] This gas mixing control device uses data from the oxygen content detector 321 and the barometer 51 to adjust the first flow control component 11, the second flow control component 21, the first opening and closing control component 311 and the second opening and closing control component 41 in real time, dynamically optimizing the mixing ratio, flow rate and pressure of air, nitrogen and oxygen to ensure that the processing conditions always match the process requirements.

[0049] Compared to related technologies where air, nitrogen, and oxygen are connected to the gas supply end of the mixing tank through three separate pipelines, and the on / off state of the three pipelines is controlled separately according to the mixing requirements, this embodiment controls the opening and closing of the mixing module and oxygen module with the main gas supply pipeline 5 through the first opening and closing control component 311 and the second opening and closing control component 41, respectively, to achieve on-demand gas supply. When the auxiliary gas is only oxygen, it is only necessary to close the first opening and closing control component 311, without the need to separately control the opening and closing of the first gas supply pipeline 1 and the second gas supply pipeline 2. When the auxiliary gas is a mixture of air and nitrogen, closing the second opening and closing control component 41 can cut off the oxygen supply, making the structure relatively simple. Furthermore, in related technologies, when switching the auxiliary gas from a mixture of air and nitrogen to pure oxygen, the air and nitrogen pipelines need to be closed, and the remaining gas in the mixing tank needs to be purged before pure oxygen can be delivered. However, the gas mixing control device provided in this embodiment, based on the type of auxiliary gas, runs the oxygen module (for delivering oxygen) and the air / nitrogen mixing module in parallel, making them independent. When switching the type of auxiliary gas, only the first opening / closing control component 311 and the second opening / closing control component 41 need to be controlled, which is simple, quick, and avoids significant waste of gas resources. This gas mixing control device enables dynamic configuration of the auxiliary gas during laser processing, significantly improving processing quality and efficiency, offering good economic benefits, and is suitable for laser processing scenarios involving various materials.

[0050] Specifically, such as Figure 1 As shown, the first gas supply line 1 is connected to an air tank 14, which contains air; the second gas supply line 2 is connected to a nitrogen tank 22, which contains nitrogen; and the third gas supply line 4 is connected to an oxygen tank 42, which contains oxygen.

[0051] It is understandable that, such as Figure 1 As shown, the gas supply end of the main gas pipeline 5 is connected to the laser processing head 100. The laser processing head 100 can be a laser cutting head or a laser welding head.

[0052] Optionally, such as Figure 1 , Figure 2As shown, the first flow control component 11 includes a first flow proportional valve 111 and a first check valve 112 arranged sequentially. The first flow proportional valve 111 is communicatively connected to the control module 6, and the opening degree of the first flow proportional valve 111 is adjustable. The first flow proportional valve 111 is communicatively connected to the control module 6 so that the control module 6 can adjust the opening degree of the first flow proportional valve 111 to control the air flow rate. The first check valve 112 is installed downstream of the first flow proportional valve 111 and only allows air to flow from the first air supply line 1 to the mixing tank 3, preventing nitrogen or mixed gas in the mixing tank 3 from flowing back in, avoiding contamination of the air source or causing pressure fluctuations.

[0053] Optionally, such as Figure 1 , Figure 2 As shown, the second flow control component 21 includes a second flow proportional valve 211 and a second check valve 212 arranged sequentially. The second flow proportional valve 211 is communicatively connected to the control module 6, and its opening degree is adjustable. The second flow proportional valve 211 is communicatively connected to the control module 6 so that the control module 6 can adjust the opening degree of the second flow proportional valve 211 to control the flow rate of nitrogen. The second check valve 212 is installed downstream of the second flow proportional valve 211, allowing nitrogen to flow only from the second gas supply line 2 to the mixing tank 3, preventing air or mixed gas in the mixing tank 3 from flowing back in, thus avoiding contamination of the nitrogen source or causing pressure fluctuations.

[0054] Specifically, such as Figure 1 As shown, the air inlet of the mixing tank 3 is provided with a main air supply pipeline 32, and the first air supply pipeline 1 and the second air supply pipeline 2 are connected to the air inlet of the main air supply pipeline 32.

[0055] In one alternative embodiment, such as Figure 1 , Figure 2 As shown, the first opening / closing control component 311 includes a first control valve 3111 and a third check valve 3112 arranged sequentially. The first control valve 3111 is communicatively connected to the control module 6 and has switchable open and closed states. The communication between the first control valve 3111 and the control module 6 allows the control module 6 to adjust the open and closed states of the first control valve 3111. When the auxiliary gas includes nitrogen and air, the first control valve 3111 is in the open state; when the auxiliary gas does not include nitrogen and air, the first control valve 3111 is in the closed state. The third check valve 3112 is located downstream of the first control valve 3111 and only allows the mixed gas in the mixing tank 3 to flow from the first gas delivery line 31 to the main gas delivery line 5, preventing gas backflow and avoiding contamination of the mixed gas in the mixing tank 3 or causing pressure fluctuations. The first control valve 3111 is a two-way valve.

[0056] Optionally, such as Figure 1 , Figure 2 As shown, the second opening / closing control component 41 includes a second control valve 411 and a fourth check valve 412. The second control valve 411 is communicatively connected to the control module 6 and has switchable open and closed states. The communication between the second control valve 411 and the control module 6 allows the control module 6 to adjust the open and closed states of the second control valve 411. When the auxiliary gas includes oxygen, the second control valve 411 is in the open state; when the auxiliary gas does not include oxygen, the second control valve 411 is in the closed state. The fourth check valve 412 is located downstream of the second control valve 411 and only allows oxygen to flow from the third gas supply line 4 to the main gas supply line 5, preventing backflow and avoiding contamination of the oxygen in the oxygen tank 42 or causing pressure fluctuations. The second control valve 411 is a two-way valve.

[0057] It should be noted that the detection pipeline 32 is a separate pipeline connected to the mixing tank 3. After the gas in the mixing tank 3 enters the detection pipeline 32, it forms a small flow of gas, which is finally discharged into the air from the end of the detection pipeline 32. During the flow, it passes through the oxygen content detection element 321, which detects the oxygen content in the gas. The result obtained is the oxygen content of the gas in the mixing tank 3.

[0058] Optionally, the gas mixing module also includes a pressure reducing valve 322, which is disposed on the detection line 32 and located between the oxygen content detection element 321 and the gas mixing tank 3. The pressure reducing valve 322 can reduce and stabilize the gas pressure flowing from the gas mixing tank 3 to the detection line 32 to a suitable pressure, preventing excessive gas pressure in the detection line 32 from damaging the oxygen content detection element 321.

[0059] In one alternative embodiment, such as Figure 1 , Figure 2 As shown, the gas mixing module also includes a temperature and humidity sensor 323 and a refrigerated dryer 12. The temperature and humidity sensor 323 is installed on the detection pipeline 32 and is communicatively connected to the control module. The temperature and humidity sensor 323 is used to detect the dew point temperature of the gas in the gas mixing tank 3. The refrigerated dryer 12 is installed on the first gas supply pipeline 1 and is communicatively connected to the control module 6. The refrigerated dryer 12 is used to cool the air in the first gas supply pipeline 1 to below the dew point temperature. The temperature and humidity sensor 323 can detect the dew point temperature of the gas in the gas mixing tank 3 and transmit the detection data to the control module 6. The control module 6 sends a signal to the refrigerated dryer 12 to cool the air to below the dew point temperature, causing the water vapor in the air to condense into liquid water and be discharged, thereby reducing the air humidity and ensuring that the humidity of the mixed gas entering the laser processing head 100 is low, preventing water spraying from the laser processing head 100.

[0060] Optionally, such as Figure 1 As shown, the gas mixing module also includes several first filters 13, which are disposed on the first gas supply line 1. The first filters 13 are used to filter impurities in the air within the first gas supply line 1. The presence of several first filters 13 on the first gas supply line 1 filters impurities in the air, improves the cleanliness of the air, and thus improves the cleanliness of the mixed gas, ensuring the cleanliness of the mixed gas entering the laser processing head 100, preventing contamination of the laser processing head 100, and avoiding damage to the laser processing head 100.

[0061] It should be noted that the number and placement of the first filters 13 are not limited in this embodiment; they can be set according to actual needs. For example, such as... Figure 1 As shown, this embodiment includes two first filters 13. One first filter 13 is located upstream of the refrigerated dryer 12, and the other first filter 13 is located between the refrigerated dryer 12 and the first flow proportional valve 111. This allows the air in the air tank 14 to be pre-filtered by the first filter 13 before entering the refrigerated dryer 12 for drying. The air dried by the refrigerated dryer 12 is then filtered a second time by the first filter 13 before being delivered to the first air supply pipeline 31.

[0062] Specifically, such as Figure 1 As shown, a second filter 52 is installed on the main gas supply line 5. The second filter 52 is used to filter impurities in the gas in the main gas supply line 5. The second filter 52 filters impurities in the mixed gas, improves the cleanliness of the mixed gas, ensures the cleanliness of the mixed gas entering the laser processing head 100, prevents contamination of the laser processing head 100, and avoids the laser processing head 100 burning out.

[0063] It should be noted that the location of the second filter 52 is not limited in this embodiment; it can be set according to actual needs. For example, as shown... Figure 1 As shown, in this embodiment, the second filter 52 is disposed downstream of the barometer 51.

[0064] Among them, the control module 6 is the core control element of the system, which enables the dedicated artificial intelligence chip in the system hardware technology layer to have distributed storage and operation / interaction functions.

[0065] like Figure 2As shown, this embodiment also provides a processing control system, including the aforementioned gas mixing control device and parameter setting module 7. The parameter setting module 7 is communicatively connected to the gas mixing control device. The parameter setting module 7 can be used to set calibration values ​​for the required auxiliary gas type (e.g., a mixture of pure oxygen, air, and nitrogen, or a mixture of air, oxygen, and nitrogen), oxygen concentration, nitrogen concentration, flow rate, and pressure, and transmit these calibration values ​​to the gas mixing control module 6 to achieve real-time regulation of the first flow control component 11, the second flow control component 21, the first opening / closing control component 311, and the second opening / closing control component 41.

[0066] In this embodiment, by inputting the material and thickness of the workpiece to be processed into the parameter setting module 7, the optimal calibration parameters of the auxiliary gas can be automatically calculated and transmitted to the gas mixing control device.

[0067] Specifically, the parameter setting module 7 is communicatively connected to the control module 6. In this embodiment, the parameter setting module 7 and the control module 6 are connected via RS485 communication. RS485, also known as TIA-485-A or EIA-485, is a serial communication standard developed and published by the Electronic Industries Association (EIA).

[0068] It should be noted that the processing control device described in this utility model is not limited to the field of laser processing technology, but can also be applied in the field of conventional non-laser processing technology.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gas mixing control device, characterized in that, include: The gas mixing module includes a first gas supply line (1), a second gas supply line (2), and a gas mixing tank (3). The first gas supply line (1) is used to supply air to the gas mixing tank (3), and the second gas supply line (2) is used to supply nitrogen to the gas mixing tank (3). A first flow control component (11) for adjusting the air flow rate is installed on the first gas supply line (1), and a second flow control component (21) for adjusting the nitrogen flow rate is installed on the second gas supply line (2). The gas supply end of the gas mixing tank (3) is connected to a first gas supply line (31). A first opening and closing control component (311) for adjusting the opening and closing of the first gas supply line (31) is provided on the first gas supply line (31). The gas mixing tank (3) is also connected to a detection line (32), and an oxygen content detection element (321) is provided on the detection line (32). The oxygen module includes a third gas supply line (4) for supplying oxygen, and a second opening and closing control component (41) for adjusting the opening and closing of the third gas supply line (4). The main gas pipeline (5) is connected to the inlet end of the first gas pipeline (31) and the third gas supply pipeline (4). A barometer (51) is installed on the main gas pipeline (5). The control module (6) is communicatively connected to the first flow control component (11), the second flow control component (21), the first opening and closing control component (311), the second opening and closing control component (41), the oxygen content detector (321), and the barometer (51).

2. The gas mixing control device according to claim 1, characterized in that, The first flow control component (11) includes a first flow proportional valve (111) and a first check valve (112) arranged in sequence. The first flow proportional valve (111) is communicatively connected to the control module (6), and the opening degree of the first flow proportional valve (111) is adjustable.

3. The gas mixing control device according to claim 1, characterized in that, The second flow control component (21) includes a second flow proportional valve (211) and a second check valve (212) arranged in sequence. The second flow proportional valve (211) is communicatively connected to the control module (6), and the opening degree of the second flow proportional valve (211) is adjustable.

4. The gas mixing control device according to claim 1, characterized in that, The first opening and closing control component (311) includes a first control valve (3111) and a third check valve (3112) arranged in sequence. The first control valve (3111) is communicatively connected to the control module (6). The first control valve (3111) has a switchable open state and a closed state.

5. The gas mixing control device according to claim 1, characterized in that, The second opening and closing control component (41) includes a second control valve (411) and a fourth check valve (412). The second control valve (411) is communicatively connected to the control module (6) and has a switchable open state and a closed state.

6. The gas mixing control device according to claim 1, characterized in that, The gas mixing module also includes: A pressure reducing valve (322) is provided on the detection pipeline (32) and located between the oxygen content detection element (321) and the mixing tank (3).

7. The gas mixing control device according to any one of claims 1-6, characterized in that, The gas mixing module also includes: A temperature and humidity sensor (323) is installed on the detection pipeline (32). The temperature and humidity sensor (323) is connected to the control module (6) for communication. The temperature and humidity sensor (323) is used to detect the dew point temperature of the gas in the mixing tank (3). A refrigerated air dryer (12) is installed on the first air supply pipeline (1). The refrigerated air dryer (12) is connected to the control module (6) for communication. The refrigerated air dryer (12) is used to cool the air in the first air supply pipeline (1) to below the dew point temperature.

8. The gas mixing control device according to any one of claims 1-6, characterized in that, The gas mixing module also includes: A plurality of first filters (13) are disposed on the first air supply line (1), and the first filters (13) are used to filter impurities in the air in the first air supply line (1).

9. The gas mixing control device according to any one of claims 1-6, characterized in that, A second filter (52) is provided on the main gas pipeline (5), and the second filter (52) is used to filter impurities in the gas in the main gas pipeline (5).

10. A machining control system, characterized in that, It includes a parameter setting module (7) and a gas mixing control device as described in any one of claims 1-9, wherein the parameter setting module (7) is communicatively connected to the gas mixing control device.

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