High-precision welding equipment for processing gas sensor chip

Abstract

The invention discloses high-precision welding equipment for gas sensor chip machining, and belongs to the technical field of gas sensor chip machining equipment.The high-precision welding equipment for gas sensor chip machining comprises a fixing frame, a welding table, a sealing cover, a hydraulic cylinder, a welding mechanism, an adjusting mechanism, an anti-oxidation mechanism and an air exhaust mechanism. According to the high-precision welding equipment for processing the gas sensor chip, the sealing cover, the hydraulic cylinder, the anti-oxidation mechanism and the air exhaust mechanism are arranged, and through cooperation of the sealing cover, the air exhaust mechanism and the anti-oxidation mechanism, air in the sealing cover can be conveniently exhausted and filled with inert gas, oxygen is prevented from making contact with a welding area, and the welding quality is improved. Therefore, the welding position of the gas sensor chip is prevented from being oxidized, and the welding quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of gas sensor chip processing equipment, and in particular relates to high-precision welding equipment for gas sensor chip processing. Background Art

[0002] A gas sensor chip is a silicon chip or integrated circuit used to detect and measure gas components in the environment. It can sense gas molecules in the environment, convert them into measurable electrical signals, and output the results to a display, controller or other device. This chip can be widely used in industrial control, environmental monitoring, indoor air quality detection and other fields.

[0003] In the production process of gas sensor chips, the welding link is particularly critical. It not only requires high welding precision, but also requires effective prevention of oxidation during the welding process to ensure the stability and service life of the gas sensor chip.

[0004] Traditional welding equipment lacks effective anti-oxidation measures during the welding process. The welding area easily reacts with oxygen in the air, causing oxidation at the weld, which reduces the reliability and stability of the gas sensor chip. Summary of the invention

[0005] The purpose of the present invention is to provide high-precision welding equipment for gas sensor chip processing, which is used to solve the technical problem that traditional welding equipment in the prior art lacks effective anti-oxidation measures during the welding process, and the welding area is easily reacted with oxygen in the air, resulting in oxidation at the welding point.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: High-precision welding equipment for processing gas sensor chips includes: a fixing frame; a welding table installed on the inner bottom surface of the fixing frame; a sealing cover located directly above the welding table and plugged into the welding table; a hydraulic cylinder installed on the inner top surface of the fixing frame, and an extended end of the hydraulic cylinder is fixedly connected to the sealing cover; a welding mechanism located in the sealing cover and used for welding the gas sensor chip placed on the welding table; an adjusting mechanism installed in the sealing cover and used for adjusting the position of the welding mechanism; an anti-oxidation mechanism used for conveying inert gas into the sealing cover; and an exhaust mechanism used for extracting air from the sealing cover.

[0007] Preferably, the adjustment mechanism includes: a first installation box, installed on the inner top surface of the sealing cover, and having an opening at the bottom; a first motor, installed on the side of the first installation box; a first lead screw, rotatably connected to the first installation box, and one end of which is fixedly connected to the power output shaft of the first motor; a first lead screw nut, sleeved on the first lead screw; and a first sliding seat, fixedly sleeved on the first lead screw nut, and slidably connected to the first installation box.

[0008] Preferably, the adjustment mechanism also includes: a second mounting box, fixedly connected to the bottom surface of the first sliding seat, and the bottom surface of which is an opening; a second motor, mounted on one side of the second mounting box; a second lead screw, rotatably connected to the second mounting box, and one end of which is fixedly connected to the power output shaft of the second motor; a second lead screw nut, sleeved on the second lead screw; and a second sliding seat, fixedly sleeved on the second lead screw nut, and slidably connected to the second mounting box.

[0009] Preferably, the welding mechanism comprises: a laser welding machine installed on the bottom surface of the second sliding seat; and a welding head installed on the bottom surface of the second sliding seat and electrically connected to the laser welding machine.

[0010] Preferably, the high-precision welding equipment for processing gas sensor chips also includes: an electric ventilation valve installed through the top surface of the sealing cover, and the sealing cover is made of a transparent material; and a cleaning mechanism for cleaning the inner wall of the sealing cover.

[0011] Preferably, the anti-oxidation mechanism includes: a gas storage tank installed on the top surface of the sealing cover and used to contain inert gas; a delivery pipe, one end of which is connected to the gas storage tank and the other end of which extends into the sealing cover; and a valve installed on the delivery pipe.

[0012] Preferably, the cleaning mechanism comprises: an inner gear ring rotatably connected to the inner wall of the sealing cover; and a plurality of cleaning wipes equidistantly installed on the bottom surface of the inner gear ring and all in contact with the sealing cover.

[0013] Preferably, the air extraction mechanism includes: an air pump, which is installed on the top surface of the sealing cover and whose air extraction pipe extends into the sealing cover; an air nozzle, which is installed at the end of the air outlet pipe of the air pump; a shaft, which is rotatably installed on the sealing cover; fan blades, which are installed on the shaft, and the air nozzle faces the fan blades; and a gear, which is installed at the lower end of the shaft and meshingly connected with the inner gear ring.

[0014] Preferably, the high-precision welding equipment for processing gas sensor chips also includes a control system, which includes: a data acquisition module, which is used to collect comprehensive data information of the high-precision welding equipment, wherein the comprehensive data information includes temperature data, reflectivity data of the welding material, thickness data of the welding material, thermal conductivity data of the welding material and position error value data of the laser focus; a data analysis module, which generates a power influence coefficient according to the comprehensive data information, and generates a corresponding power level according to the power influence coefficient; a data acquisition module, which is used to collect a historical training data set of the high-precision welding equipment, and the historical training data set includes welding comprehensive influence data and welding speed; wherein the welding comprehensive influence data includes comprehensive data information and power data of the laser welding machine; a welding speed prediction module, which trains a machine learning model for predicting the welding speed based on the historical training data set, collects real-time welding comprehensive influence data, and inputs it into the trained machine learning model to predict the welding speed.

[0015] Preferably, the power influence coefficient is generated as follows: ; In the formula, is the power influence coefficient, is the temperature data inside the sealed cover, is the reflectivity data of welding materials, is the thickness data of welding materials, is the thermal conductivity data of the welding material, is the position error value data of the laser focus.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The high-precision welding equipment for processing gas sensor chips in the present invention is provided with a sealing cover, a hydraulic cylinder, an anti-oxidation mechanism and an exhaust mechanism. Through the cooperation of the sealing cover, the exhaust mechanism and the anti-oxidation mechanism, it is convenient to extract the air in the sealing cover and fill it with inert gas, thereby avoiding oxygen from contacting the welding area, thereby preventing oxidation of the welding point of the gas sensor chip and improving the quality of welding.

[0017] 2. The vacuum mechanism and the cleaning mechanism of the present invention can utilize the airflow generated when the vacuum mechanism is working to drive the internal gear ring and the cleaning wipe to rotate, thereby cleaning the sealing cover, making it convenient for the user to observe the state inside the transparent sealing cover, and ensuring the visualization and monitoring of the welding process; since there is no need to set a separate driving source for the cleaning mechanism, the manufacturing cost is reduced, the additional energy consumption is reduced, and the operating cost of the equipment is reduced.

[0018] 3. The high-precision welding equipment for gas sensor chip processing in the present invention is equipped with a control system. The data acquisition module collects comprehensive data information. The data analysis module generates a power influence coefficient based on these data, and determines and generates a corresponding power level, thereby accurately controlling the power of the laser welding machine, improving the welding quality, and reducing energy consumption; according to the data acquisition module, the historical training data set is collected, and the welding speed prediction module can predict the optimal welding speed, thereby optimizing the welding process; the control system can adapt to the needs of different welding materials and different welding conditions, and can achieve accurate welding of various gas sensor chips by adjusting the power and welding speed of the laser welding machine, and can also reduce unnecessary energy consumption and material waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A three-dimensional diagram of a high-precision welding device for processing a gas sensor chip according to the present invention; Figure 2 It is a schematic diagram of the assembly structure of the sealing cover and the adjustment mechanism in the present invention; Figure 3 It is a schematic diagram of the assembly structure of the cleaning mechanism and the air extraction mechanism in the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of part A; Figure 5 The three-dimensional structure of the adjusting mechanism in the present invention Figure 1 ; Figure 6 The three-dimensional structure of the adjusting mechanism in the present invention Figure 2 ; Figure 7 It is a module diagram of the control system in the present invention; Reference numerals: 100, fixing frame; 101, welding table; 102, sealing cover; 103, hydraulic cylinder; 104, electric ventilation valve; 110, welding mechanism; 111, laser welding machine; 112, welding head; 120, adjusting mechanism; 121, first installation box; 122, first motor; 123, first lead screw; 1231, first lead screw nut; 124, first sliding seat; 125, second installation box; 126 , second motor; 127, second lead screw; 1271, second lead screw nut; 128, second sliding seat; 130, cleaning mechanism; 131, inner gear ring; 132, cleaning wipe; 140, anti-oxidation mechanism; 141, gas tank; 142, delivery pipe; 143, valve; 150, air extraction mechanism; 151, air pump; 152, air outlet pipe; 153, air nozzle; 154, shaft; 155, fan blade; 156, gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Figure 1 and Figure 2 As shown, the high-precision welding equipment for processing gas sensor chips includes a fixing frame 100, a welding table 101, a sealing cover 102, a hydraulic cylinder 103, a welding mechanism 110, an adjusting mechanism 120, an anti-oxidation mechanism 140 and an exhaust mechanism 150.

[0023] The welding table 101 is installed on the inner bottom surface of the fixing frame 100; the sealing cover 102 is located directly above the welding table 101, and the sealing cover 102 is plugged into the welding table 101; the hydraulic cylinder 103 is installed on the inner top surface of the fixing frame 100, and the extended end of the hydraulic cylinder 103 is fixedly connected to the sealing cover 102; the welding mechanism 110 is located in the sealing cover 102, and the welding mechanism 110 is used to weld the gas sensor chip placed on the welding table 101; the adjusting mechanism 120 is installed in the sealing cover 102, and the adjusting mechanism 120 is used to adjust the position of the welding mechanism 110; the anti-oxidation mechanism 140 is used to transport inert gas into the sealing cover 102; the exhaust mechanism 150 is used to exhaust the air in the sealing cover 102.

[0024] Specifically, the gas sensor chip to be welded is placed on the welding table 101, and then the hydraulic cylinder 103 is started, so that the extended end of the hydraulic cylinder 103 drives the sealing cover 102 to move downward, and then the sealing cover 102 is plugged into the welding table 101, so that the sealing cover 102 and the welding table 101 form a closed space, and then the air extraction mechanism 150 is started to extract the air in the sealing cover 102, so that the sealing cover 102 is in a negative pressure state, and then the inert gas is transported into the sealing cover 102 through the anti-oxidation mechanism 140.

[0025] Then, the gas sensor chip is welded by the welding mechanism 110 . During welding, the position of the welding mechanism 110 is adjusted by the adjusting mechanism 120 , so as to facilitate multi-position welding of the gas sensor chip.

[0026] Furthermore, since the sealing cover 102 is filled with inert gas, oxidation of the welding position of the gas sensor chip can be avoided when welding the gas sensor chip, thereby improving the welding quality.

[0027] like Figure 2 , Figure 5 and Figure 6 As shown, the adjustment mechanism 120 includes a first installation box 121, a first motor 122, a first lead screw 123, a first lead screw nut 1231, a first sliding seat 124, a second installation box 125, a second motor 126, a second lead screw 127, a second lead screw nut 1271 and a second sliding seat 128.

[0028] The first installation box 121 is installed on the inner top surface of the sealing cover 102, and the bottom of the first installation box 121 is open; the first motor 122 is installed on the side of the first installation box 121; the first lead screw 123 is rotatably connected to the first installation box 121, and one end of the first lead screw 123 is fixedly connected to the power output shaft of the first motor 122; the first lead screw nut 1231 is sleeved on the first lead screw 123; the first sliding seat 124 is fixedly sleeved on the first lead screw nut 1231, and the first sliding seat 124 is slidably connected to the first installation box 121.

[0029] The second installation box 125 is fixedly connected to the bottom surface of the first sliding seat 124, and the bottom surface of the second installation box 125 is open; the second motor 126 is installed on one side of the second installation box 125; the second lead screw 127 is rotatably connected to the second installation box 125, and one end of the second lead screw 127 is fixedly connected to the power output shaft of the second motor 126; the second lead screw nut 1271 is sleeved on the second lead screw 127; the second sliding seat 128 is fixedly sleeved on the second lead screw nut 1271, and the second sliding seat 128 is slidably connected to the second installation box 125.

[0030] Specifically, when the first motor 122 runs, it drives the first lead screw 123 to rotate, thereby moving the first lead screw nut 1231, and then driving the first sliding seat 124 to move along the first installation box 121; when the first sliding seat 124 moves, it drives the second installation box 125 to move.

[0031] When the second motor 126 is running, it drives the second lead screw 127 to rotate, thereby moving the second lead screw nut 1271 , and further driving the second sliding seat 128 to move along the second installation box 125 .

[0032] like Figure 6 As shown, the welding mechanism 110 includes a laser welding machine 111 and a welding head 112. The laser welding machine 111 is installed on the bottom surface of the second sliding seat 128, and the power of the laser welding machine 111 can be adjusted. The welding head 112 is installed on the bottom surface of the second sliding seat 128, and the welding head 112 is connected to the laser welding machine 111 through a cable.

[0033] Specifically, the laser welding machine 111 is started to weld the gas sensor chip via the welding head 112 .

[0034] like Figure 1 As shown, the high-precision welding equipment for gas sensor chip processing also includes an electric vent valve 104 and a cleaning mechanism 130. The electric vent valve 104 is installed through the top surface of the sealing cover 102, and the sealing cover 102 is made of transparent material; the cleaning mechanism 130 is used to clean the inner wall of the sealing cover 102.

[0035] Specifically, when the sealing cover 102 is plugged into the welding table 101, when the electric ventilation valve 104 is in an open state, the air inside and outside the sealing cover 102 can circulate, and when the electric ventilation valve 104 is in a closed state, the air inside and outside the sealing cover 102 cannot circulate.

[0036] like Figure 1 As shown, the anti-oxidation mechanism 140 includes a gas storage tank 141, a delivery pipe 142 and a valve 143. The gas storage tank 141 is installed on the top surface of the sealing cover 102, and the gas storage tank 141 is used to contain an inert gas, which is helium or argon. One end of the delivery pipe 142 is connected to the gas storage tank 141, and the other end of the delivery pipe 142 extends into the sealing cover 102; the valve 143 is installed on the delivery pipe 142.

[0037] Specifically, when the sealing cover 102 is plugged into the welding table 101, the valve 143 is opened to allow the inert gas in the gas tank 141 to be transported to the sealing cover 102 through the delivery pipe 142, so that the inert gas fills the sealing cover 102, thereby preventing oxygen from contacting the welding area and thus avoiding oxidation.

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, the air extraction mechanism 150 includes an air pump 151, an air nozzle 153, a shaft 154, a fan blade 155 and a gear 156. The air pump 151 is installed on the top surface of the sealing cover 102, and the air extraction pipe of the air pump 151 extends into the sealing cover 102; the air nozzle 153 is installed at the end of the air outlet pipe 152 of the air pump 151; a one-way valve is installed in the air outlet pipe 152 of the air pump 151, so that the air in the sealing cover 102 can only enter the air pump 151 through the air outlet pipe 152. The shaft 154 is rotatably installed on the sealing cover 102; the fan blade 155 is installed on the shaft 154, and the air nozzle 153 faces the fan blade 155; the gear 156 is installed at the lower end of the shaft 154, and the gear 156 is meshed and connected with the inner gear ring 131.

[0039] Specifically, when the sealing cover 102 is plugged into the welding table 101, the air pump 151 is started to extract the air in the sealing cover 102 through the exhaust pipe of the air pump 151, and the air is discharged through the exhaust pipe 152, so that the sealing cover 102 is in a negative pressure state.

[0040] The air in the air outlet pipe 152 is discharged through the air nozzle 153 , and the air nozzle 153 blows the air toward the fan blade 155 , thereby rotating the fan blade 155 , thereby driving the shaft 154 and the gear 156 to rotate, and the rotating gear 156 meshes and drives the inner gear ring 131 to rotate.

[0041] Working principle: When in use, the gas sensor chip to be welded is placed on the welding table 101, and then the hydraulic cylinder 103 is started, so that the extended end of the hydraulic cylinder 103 pushes the sealing cover 102 to move downward, and then the sealing cover 102 is plugged into the welding table 101, so that a closed space is formed between the sealing cover 102 and the welding table 101.

[0042] Then, by starting the air pump 151, the air in the sealing cover 102 is pumped out, so that the sealing cover 102 is in a negative pressure state. Then, by opening the valve 143 on the delivery pipe 142, the inert gas in the gas storage tank 141 enters the sealing cover 102 through the delivery pipe 142, so that the sealing cover 102 is filled with the inert gas.

[0043] Then, by starting the laser welding machine 111, the gas sensor chip is welded through the welding head 112. During welding, by starting the first motor 122 and the second motor 126, the first sliding seat 124 and the second sliding seat 128 are driven to move, and the position of the welding head 112 is adjusted, so as to facilitate the welding head 112 to weld different positions of the gas sensor chip.

[0044] Furthermore, during welding, the sealing cover 102 is filled with inert gas, which prevents oxygen from contacting the welding area, thereby preventing oxidation from occurring and improving the quality of welding.

[0045] When welding is completed, the electric ventilation valve 104 is started to allow air to circulate inside and outside the sealing cover 102, and then the hydraulic cylinder 103 is started so that the extended end of the hydraulic cylinder 103 drives the sealing cover 102 to move upward, thereby separating the sealing cover 102 from the welding table 101, thereby facilitating the removal of the gas sensor chip after welding.

[0046] Example 2: Figure 1 , Figure 3 and Figure 4 As shown, in the case where other parts are the same as those of Example 1, the difference between this embodiment and Example 1 is that the cleaning mechanism 130 includes an inner toothed ring 131 and a plurality of cleaning wipes 132. The inner toothed ring 131 is rotatably connected to the inner wall of the sealing cover 102; the plurality of cleaning wipes 132 are equidistantly installed on the bottom surface of the inner toothed ring 131, and the plurality of cleaning wipes 132 are in contact with the sealing cover 102.

[0047] Specifically, after the transparent sealing cover 102 is used for a long time, debris will be attached to the inner wall of the sealing cover 102. By rotating the inner gear ring 131, the multiple cleaning wipes 132 are driven to rotate. The rotating cleaning wipes 132 will clean the inner wall of the sealing cover 102, thereby improving the cleanliness of the transparent cover, making it easier for the user to observe the internal state of the transparent sealing cover 102.

[0048] Working principle: During specific use, when the sealing cover 102 is plugged into the welding table 101, when the air pump 151 draws out the air in the sealing cover 102, the air in the air outlet pipe 152 of the air pump 151 will be discharged through the air nozzle 153, and the air nozzle 153 will blow the air to the fan blade 155, thereby causing the fan blade 155 to rotate, thereby driving the shaft 154 and the gear 156 to rotate, and the rotating gear 156 will engage and drive the inner gear ring 131 to rotate, thereby driving multiple cleaning wipes 132 to rotate, and the rotating cleaning wipes 132 will clean the inner wall of the sealing cover 102, thereby improving the cleanliness of the transparent cover, making it easier for the user to observe the state inside the transparent sealing cover 102.

[0049] Example 3: Figure 1-Figure 7 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that: The high-precision welding equipment for gas sensor chip processing also includes a control system; The control system includes: a data acquisition module, a data analysis module, a data acquisition module and a welding speed prediction module. The modules are connected by wired / wireless means to realize data transmission.

[0050] The data acquisition module is used to collect comprehensive data information of high-precision welding equipment, wherein the comprehensive data information includes temperature data, reflectivity data of welding materials, thickness data of welding materials, thermal conductivity data of welding materials and position error value data of laser focus; Specifically, the temperature data refers to the temperature data inside the sealing cover 102 after the sealing cover 102 is plugged into the welding station, and the temperature data can be measured and obtained by a temperature sensor; The reflectivity data of welding materials can be obtained by measuring the surface reflectivity characteristics of welding materials using a laser reflectivity sensor or a spectral reflectivity sensor; The thickness data of welding materials can be obtained by measuring welding materials with a laser rangefinder or an ultrasonic thickness gauge; The thermal conductivity data of welding materials can be obtained by using a thermal conductivity sensor to measure the thermal conductivity characteristics of the material. This data is user-entered data. Before welding, the user measures the thermal conductivity of the same batch of welding materials and then enters the measured thermal conductivity data into the data acquisition module. The position error value data of the laser focus refers to the distance between the actual position of the laser focus and the preset laser focus position; the precise position of the laser focus is monitored by a laser displacement sensor, and then a non-contact distance sensor (such as a laser ranging sensor) is used to measure and calculate the distance between the actual measured position of the laser focus and the preset laser focus position.

[0051] The data analysis module generates a power impact coefficient based on the comprehensive data information, and generates a corresponding power level based on the power impact coefficient; The power influence factor is generated as follows: ; In the formula, is the power influence coefficient, is the temperature data in the sealing cover 102, is the reflectivity data of welding materials, is the thickness data of welding materials, is the thermal conductivity data of the welding material, is the position error value data of the laser focus, , , , and are weight coefficients, which are determined by technicians in this field according to specific application requirements. , , , and All are greater than 0; The higher the temperature in the sealing cover 102 is, the more the heat conduction capacity of the welding material can be improved, thereby reducing the energy required for laser heating. At high temperatures, the welding material is more easily melted, so the required power of the laser welding machine 111 is lower, and vice versa. The higher the reflectivity of the welding material, the greater the amount of laser energy reflected, and the worse the welding effect. Therefore, the power of the laser welding machine 111 needs to be increased to compensate for the reflection loss. On the contrary, materials with low reflectivity will absorb more laser energy, and the required laser power is lower. Therefore, the power of the laser welding machine 111 can be reduced. The thicker the welding material is, the more energy is needed to melt the welding material, so the power of the laser welding machine 111 needs to be increased, and vice versa; The higher the thermal conductivity of the welding material, the more effectively the laser energy can be transferred to the interior of the material, thereby reducing the required laser power. Therefore, the higher the thermal conductivity of the welding material, the lower the power of the laser welding machine 111 required. Conversely, if the thermal conductivity of the welding material is lower, it means that the material is not easy to conduct heat. Therefore, the power of the laser welding machine 111 needs to be increased to make the welding material reach the required temperature.

[0052] It should be noted that the formulas involved in the above-mentioned are all calculated by removing dimensions and taking numerical values. They are a formula that is closest to the actual situation obtained by collecting a large amount of data and performing software simulation. The weight coefficients in the formulas and the various preset thresholds in the analysis process are set by technical personnel in this field according to actual conditions or obtained by simulating a large amount of data; the size of the weight coefficient is to quantify each parameter to obtain a specific value for subsequent comparison. The size of the weight coefficient depends on the amount of sample data and the corresponding processing coefficients initially set by technical personnel in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameters and the quantized values.

[0053] The power levels are generated as follows: The power levels include level 1 power, level 2 power and level 3 power, wherein the level 1 power, level 2 power and level 3 power increase in sequence, and the level 1 power, level 2 power and level 3 power are all the powers of the laser welding machine 111; The threshold range of the preset power influence coefficient is , , < ; like ≤ ,At this time, the data analysis module generates the first-level power; like ≥ > ,At this time, the data analysis module generates secondary power; like > ,At this time, the data analysis module generates level 3 power.

[0054] in, and It is determined by those skilled in the art according to specific application requirements.

[0055] Exemplarily, the power of the laser welding machine 111 corresponding to the first-level power, the second-level power and the third-level power is 30W, 50W and 80W respectively; the power of the laser welding machine 111 can also be customized according to specific circumstances.

[0056] According to the corresponding power level, the data analysis module generates a corresponding power level control signal. For example, when the power level is level one, the data analysis module generates a level one power control signal, and then sends the level one power control signal to the controller of the laser welding machine 111, thereby controlling and adjusting the power of the laser welding machine 111.

[0057] The data acquisition module is used to collect a historical training data set of high-precision welding equipment, and the historical training data set includes welding comprehensive influence data and welding speed; wherein the welding comprehensive influence data includes comprehensive data information and power data of the laser welding machine 111, and the power data of the laser welding machine 111 can be obtained by measuring with a power meter; The welding speed refers to the moving speed of the welding head 112 relative to the welding material or workpiece during the welding process. Specifically, it is the speed at which the laser beam emitted by the welding head 112 moves on the surface of the welding material during the laser welding process. It can also be said that in this embodiment, the welding speed is equal to the moving speed of the welding head 112.

[0058] The welding speed can be measured by a laser beam position sensor (such as a displacement sensor or laser displacement meter) to measure the precise position of the laser beam on the surface of the welding material, and the welding speed can be calculated based on the displacement change of the laser beam. During the measurement, the laser beam position sensor records the change of the laser beam position over time, and then calculates the welding speed. The welding speed can be obtained by comparing the position changes at adjacent time points.

[0059] The welding speed prediction module trains a machine learning model to predict welding speed based on a historical training data set, collects real-time welding comprehensive impact data, and inputs it into the trained machine learning model to predict welding speed; The training method of the machine learning model that predicts welding speed includes: Convert the collected welding comprehensive influence data into a corresponding set of feature vectors; Each group of feature vectors is used as the input of the machine learning model. The machine learning model takes the welding speed corresponding to each group of welding comprehensive influence data as the output, the welding speed actually corresponding to each group of welding comprehensive influence data is used as the prediction target, and minimizing the loss function value of the machine learning model is used as the training target. The training is stopped when the loss function value of the machine learning model is less than or equal to the preset target loss value.

[0060] The machine learning model can be one of the models such as SVM regression, random forest regression or neural network regression.

[0061] The loss function value of the machine learning model is the mean square error; Mean square error is one of the commonly used loss functions. Minimization is used as the goal to train the model so that the machine learning model better fits the data, thereby improving the performance and accuracy of the model; In the loss function is the loss function value of the machine learning model, x is the feature vector group number; m is the number of feature vector groups; is the welding speed predicted by the xth group of feature vectors, is the actual welding speed corresponding to the xth group of eigenvectors; Other model parameters of the machine learning model, target loss value, optimization algorithm, training set test set validation set ratio, and loss function optimization are all achieved through actual engineering implementation and continuous experimental tuning.

[0062] The rotation speeds of the first motor and the second motor are controlled according to the predicted welding speed. When the rotation speeds of the first motor and the second motor change, the moving speeds of the first sliding seat and the second sliding seat are adjusted, thereby adjusting the moving speeds of the laser welding machine 111 and the welding head 112, and thereby adjusting the welding speed.

[0063] When the moving speed of the welding head 112 is the same as the predicted welding speed, the rotation speeds of the first motor and the second motor are not adjusted.

[0064] In summary, through the comprehensive data information collected by the data acquisition module, the data analysis module generates the power influence coefficient based on these data, and determines and generates the corresponding power level, so as to accurately control the power of the laser welding machine 111, improve the welding quality, and reduce energy consumption; According to the historical training data set collected by the data acquisition module, the welding speed prediction module can predict the optimal welding speed, thereby optimizing the welding process; The control system can adapt to the needs of different welding materials and different welding conditions. By adjusting the power and welding speed of the laser welding machine 111, it can achieve precise welding of various gas sensor chips and reduce unnecessary energy consumption and material waste.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0066] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. High-precision welding equipment for gas sensor chip processing, characterized in that: include: Fixed frame (100); A welding table (101) mounted on the inner bottom surface of the fixing frame (100); A sealing cover (102) is located directly above the welding platform (101) and is plugged into and matched with the welding platform (101); A hydraulic cylinder (103) is mounted on the inner top surface of the fixing frame (100), and an extended end thereof is fixedly connected to the sealing cover (102); A welding mechanism (110), located in the sealing cover (102), and used for welding a gas sensor chip placed on the welding platform (101); An adjustment mechanism (120) installed in the sealing cover (102) and used for adjusting the position of the welding mechanism (110); An anti-oxidation mechanism (140) for conveying an inert gas into the sealing cover (102); The air extraction mechanism (150) is used to extract the air in the sealing cover (102).

2. The high-precision welding equipment for gas sensor chip processing according to claim 1, characterized in that: The adjustment mechanism (120) comprises: A first installation box (121) is installed on the inner top surface of the sealing cover (102), and has an opening at the bottom; A first motor (122) mounted on a side of the first mounting box (121); A first lead screw (123) is rotatably connected to the first mounting box (121), and one end of the first lead screw is fixedly connected to the power output shaft of the first motor (122); A first lead screw nut (1231) sleeved on the first lead screw (123); The first sliding seat (124) is fixedly sleeved on the first lead screw nut (1231) and is slidably connected to the first installation box (121).

3. The high-precision welding equipment for gas sensor chip processing according to claim 2, characterized in that: The adjustment mechanism (120) further includes: A second installation box (125) is fixedly connected to the bottom surface of the first sliding seat (124), and the bottom surface of the second installation box is open; A second motor (126) installed on one side of the second installation box (125); a second lead screw (127) rotatably connected to the second mounting box (125), one end of which is fixedly connected to the power output shaft of the second motor (126); A second lead screw nut (1271) sleeved on the second lead screw (127); The second sliding seat (128) is fixedly sleeved on the second lead screw nut (1271) and is slidably connected to the second mounting box (125).

4. The high-precision welding equipment for gas sensor chip processing according to claim 3, characterized in that: The welding mechanism (110) comprises: A laser welding machine (111) is installed on the bottom surface of the second sliding seat (128); The welding head (112) is mounted on the bottom surface of the second sliding seat (128) and is electrically connected to the laser welding machine (111).

5. The high-precision welding equipment for gas sensor chip processing according to claim 1, characterized in that: Also includes: An electric ventilation valve (104) is installed through the top surface of the sealing cover (102); the sealing cover (102) is made of a transparent material; The cleaning mechanism (130) is used to clean the inner wall of the sealing cover (102).

6. The high-precision welding equipment for gas sensor chip processing according to claim 5, characterized in that: The anti-oxidation mechanism (140) comprises: A gas storage tank (141), mounted on the top surface of the sealing cover (102), for containing an inert gas; A delivery pipe (142), one end of which is connected to the gas storage tank (141), and the other end of which extends into the sealing cover (102); A valve (143) is installed on the delivery pipe (142).

7. The high-precision welding equipment for gas sensor chip processing according to claim 6, characterized in that: The cleaning mechanism (130) comprises: An inner gear ring (131) rotatably connected to the inner wall of the sealing cover (102); A plurality of cleaning wipes (132) are installed at equal intervals on the bottom surface of the inner gear ring (131) and are in contact with the sealing cover (102).

8. The high-precision welding equipment for gas sensor chip processing according to claim 7, characterized in that: The air extraction mechanism (150) comprises: An air pump (151) is installed on the top surface of the sealing cover (102), and its air extraction pipe extends into the sealing cover (102); An air nozzle (153) is installed at the end of the air outlet pipe (152) of the air pump (151); A shaft (154) rotatably mounted on the sealing cover (102); A fan blade (155) is mounted on the shaft (154), and the air nozzle (153) faces the fan blade (155); A gear (156) is mounted on the lower end of the shaft (154) and is meshedly connected to the inner gear ring (131).

9. The high-precision welding equipment for gas sensor chip processing according to claim 4, characterized in that: Also included is a control system, the control system comprising: A data acquisition module is used to collect comprehensive data information of high-precision welding equipment, wherein the comprehensive data information includes temperature data, reflectivity data of welding materials, thickness data of welding materials, thermal conductivity data of welding materials and position error value data of laser focus; The data analysis module generates a power impact coefficient based on the comprehensive data information, and generates a corresponding power level based on the power impact coefficient; A data acquisition module is used to collect a historical training data set of a high-precision welding device, the historical training data set including welding comprehensive influence data and welding speed; wherein the welding comprehensive influence data includes comprehensive data information and power data of a laser welding machine (111); The welding speed prediction module trains a machine learning model to predict the welding speed based on the historical training data set, collects real-time welding comprehensive influencing data, and inputs it into the trained machine learning model to predict the welding speed.

10. The high-precision welding equipment for processing gas sensor chips according to claim 9, characterized in that: The power influence coefficient is generated as follows: ； In the formula, is the power influence coefficient, is the temperature data inside the sealing cover (102), is the reflectivity data of welding materials, is the thickness data of welding materials, is the thermal conductivity data of the welding material, is the position error value data of the laser focus, , , , and are weight coefficients, , , , and Both are greater than 0.

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