Automatic brazing device and brazing system

Abstract

The invention discloses an automatic brazing device and a brazing system, and relates to the technical field of welding, and the automatic brazing device comprises a brazing module, an air injection module and a cooling module. The brazing module is used for brazing a target workpiece under the condition that a welding instruction is received; the gas spraying module is used for spraying protective gas so as to provide anti-oxidation protection when the brazing module performs brazing work on the target workpiece; the cooling module is used for cooling the brazed target workpiece after the brazing work of the brazing module is finished; the automatic brazing device aims at improving the brazing quality of automatic brazing.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to an automatic brazing device and a brazing system. Background Art

[0002] At present, when an automatic brazing device is applied to the air conditioner production technology, it can be used for brazing the evaporator and the condenser. However, the existing automatic brazing device has a low brazing quality, resulting in a low yield of products. Summary of the Invention

[0003] The main object of the present invention is to propose an automatic brazing device and a brazing system, aiming to improve the brazing quality of the automatic welding tongs device.

[0004] To achieve the above object, the automatic brazing device proposed by the present invention includes:

[0005] A brazing module, which is used for brazing a target workpiece when receiving a welding instruction;

[0006] An air jet module, which is used for jetting a protective gas to provide anti-oxidation protection when the brazing module performs brazing work on the target workpiece; and

[0007] A cooling module, which is used for cooling the brazed target workpiece after the brazing work of the brazing module is completed.

[0008] In an embodiment, the automatic brazing device further includes:

[0009] A motion module, which is used for transporting the target workpiece to move on a processing path, and a welding station and a cooling station are sequentially arranged on the processing path;

[0010] The brazing module and the air jet module are arranged corresponding to the position of the welding station, and the cooling module is arranged corresponding to the position of the cooling station.

[0011] In an embodiment, the cooling station, the welding station and the cooling station are sequentially arranged on the processing path, the number of the cooling modules is two, and the cooling modules are arranged corresponding to the positions of the cooling stations one by one;

[0012] The motion module is used for transporting the target workpiece to move bidirectionally on the processing path.

[0013] In an embodiment, the automatic brazing device further includes a cleaning module, and the cleaning module is arranged corresponding to the position of the cooling station;

[0014] The cleaning module is used for removing impurities on the target workpiece after the cooling module completes the cooling work.

[0015] In one embodiment, a transition station is further included on the processing path corresponding to the welding station and the cooling station;

[0016] The automatic brazing device further includes a transition protection module, which is arranged at the position corresponding to the transition station, and the transition protection module is used to eject a protective gas to provide anti-oxidation protection when the target workpiece moves between the welding station and the cooling station.

[0017] In one embodiment, the automatic brazing device further includes a mounting table, and the brazing module, the air jet module and the cooling module are respectively arranged on the mounting table.

[0018] In one embodiment, the automatic brazing device further includes:

[0019] A cleaning module, which is used to remove impurities on the target workpiece;

[0020] A motion module, which is used to transport the target workpiece to move on the processing path, and a welding station and a cleaning station are sequentially arranged on the processing path;

[0021] The brazing module, the air jet module and the cooling module are arranged at the position corresponding to the welding station, and the cleaning module is arranged at the position corresponding to the cleaning station.

[0022] In one embodiment, the brazing module includes a first burner row and a second burner row, the target workpiece is arranged between the first burner row and the second burner row, and the first burner row and the second burner row are used to heat the target workpiece respectively.

[0023] In one embodiment, the brazing module further includes a first driving mechanism and a second driving mechanism, the first driving mechanism is drivingly connected to the first burner row, and the second driving mechanism is drivingly connected to the second burner row;

[0024] The first driving mechanism and the second driving mechanism are used to drive the first burner row and the second burner row to reciprocate along the first direction respectively.

[0025] In one embodiment, the brazing module further includes a control mechanism, a first gas flowmeter and a second gas flowmeter, the first gas flowmeter is used to collect the gas flow output by the first burner row, and the second gas flowmeter is used to collect the gas flow output by the second burner row;

[0026] The control mechanism is used to control the flame spraying amount of the first burner row according to the gas flow collected by the first gas flowmeter, and control the flame spraying amount of the second burner row according to the gas flow collected by the second gas flowmeter.

[0027] In one embodiment, the jetting module includes a first jetting component and a second jetting component. The target workpiece is disposed between the first jetting component and the second jetting component. The first jetting component and the second jetting component are configured to jet protective gases respectively to cover both sides of the target workpiece.

[0028] In one embodiment, the jetting module further includes a control mechanism, a third gas flowmeter, and a fourth gas flowmeter. The third gas flowmeter is configured to collect the flow rate of the protective gas output by the first jetting component, and the fourth gas flowmeter is configured to collect the flow rate of the protective gas output by the second jetting component.

[0029] The control mechanism is configured to control the gas jetting volume of the first jetting component according to the gas flow rate collected by the third gas flowmeter, and control the gas jetting volume of the second jetting component according to the gas flow rate collected by the fourth gas flowmeter.

[0030] In one embodiment, both the first jetting component and the second jetting component include a plurality of first nozzles. Each first nozzle is provided with a plurality of gas outlet holes for outputting the protective gas.

[0031] In one embodiment, the cooling module includes a first cooling component and a second cooling component. The target workpiece is disposed between the first cooling component and the second cooling component. The first cooling component and the second cooling component are configured to cool the target workpiece after brazing when the brazing operation of the brazing module is completed.

[0032] In one embodiment, both the first cooling component and the second cooling component include a plurality of second nozzles. The second nozzles are provided with a plurality of liquid outlet holes for jetting cooling liquid to cool the target workpiece after brazing.

[0033] In one embodiment, the automatic brazing device further includes a water tank module. The target workpiece is disposed in the water tank module, and the water tank module is configured to hold the water jetted by the cooling module.

[0034] The present invention also provides a brazing system, which includes the automatic brazing device as described in any one of the above.

[0035] In summary, the present automatic soldering device effectively solves the problem of low soldering quality of traditional automatic soldering equipment. Among them, the present automatic soldering device includes a soldering module, a jet module, and a cooling module; first, the soldering module solders the target workpiece, and secondly, the jet module sprays a protective gas when the soldering module sprays fire. By spraying the protective gas, an inert gas protection is provided during the preheating and soldering processes, reducing the oxidation defect rate of the target workpiece. Finally, through the cooling module, the target workpiece is prevented from being continuously overheated and oxidized. In this way, the automated process of the present automatic soldering device can effectively improve the soldering quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0037] Figure 1 Schematic diagram of the structure of the first embodiment of the automatic soldering device provided by the present invention;

[0038] Figure 2 Schematic diagram of the structure of a soldered workpiece in an embodiment;

[0039] Figure 3 Schematic diagram of the structure of the second embodiment of the automatic soldering device provided by the present invention;

[0040] Figure 4 Schematic diagram of the structure of the first embodiment of the second nozzle provided by the present invention;

[0041] Figure 5 Schematic diagram of the structure of another embodiment of the second nozzle provided by the present invention;

[0042] Figure 6 Schematic diagram of the structure of the third embodiment of the automatic soldering device provided by the present invention;

[0043] Figure 7 Schematic diagram of the structure of the first embodiment of the first nozzle provided by the present invention;

[0044] Figure 8 Schematic diagram of the structure of another embodiment of the first nozzle provided by the present invention;

[0045] Figure 9 Schematic diagram of the structure of the first embodiment of the third nozzle provided by the present invention;

[0046] Figure 10 Schematic diagram of the structure of another embodiment of the third nozzle provided by the present invention;

[0047] Figure 11 Schematic diagram of the structure of an embodiment of the fourth nozzle provided by the present invention;

[0048] Figure 12 Schematic diagram of the structure of another embodiment of the fourth nozzle provided by the present invention.

[0049] Explanation of the reference numerals in the drawings:

[0050] 10. Automatic brazing device; 100. Brazing module; 110. First burner row; 120. Second burner row; 200. Jetting module; 210. First jetting component; 220. Second jetting component; 230. First nozzle; 300. Cooling module; 310. First cooling component; 320. Second cooling component; 330. Second nozzle; 400. Movement module; 410. Welding station; 420. Cooling station; 430. Transition station; 440. Cleaning station; 500. Transition protection module; 510. First transition component; 520. Second transition component; 530. Third nozzle; 600. Cleaning module; 610. First cleaning component; 620. Second cleaning component; 630. Fourth nozzle; 700. Water tank module; 800. Fixing device; 20. Target workpiece.

[0051] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0053] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0054] In addition, if the embodiments of the present invention involve descriptions such as "first" and "second", the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] Currently, when the automatic brazing device is applied to the air conditioner production technology, it can be used for brazing the evaporator and the condenser. However, the existing automatic brazing device has a low brazing quality, resulting in a low yield rate of the products.

[0056] The automatic brazing device is mainly used for brazing the evaporator and the condenser in air conditioner production. In the air conditioner industry, the condensers and related structural components of its air conditioning system mainly use pure copper, making the air conditioner industry a large consumer of pure copper. However, due to the relatively scarce copper resources and the small proven copper reserves. As of 2022, the domestic external dependence reached approximately 80.2%, and copper mines mainly rely on imports, with the overall cost being relatively high. In the domestic refined copper consumption structure, electrical equipment accounts for about 52%, and air conditioning refrigeration accounts for about 15%. With the rapid development of fields such as new energy vehicles and photovoltaic power generation, the demand for refined copper has increased sharply, resulting in a situation of supply falling short of demand globally and domestically. In addition, problems such as excessively high copper price costs and long transportation cycles have further exacerbated this contradiction, seriously affecting the output and operation of the air conditioner industry.

[0057] To solve or alleviate the air conditioner industry's dependence on copper resources, the industry is conducting research on "aluminum replacing copper" and "steel replacing copper". These alternative solutions aim to replace traditional copper heat exchangers with aluminum tube heat exchangers and steel heat exchangers. In particular, the replacement of copper heat exchangers with steel heat exchangers has become an important research direction. However, when using steel to replace pure copper as the heat exchanger material, due to significant differences in material composition, thermal conductivity, high-temperature performance, and brazing performance between the two, new technical challenges have arisen. In particular, the brazing performance and thermal conductivity of steel are far inferior to those of pure copper, resulting in the inability of the existing automatic flame brazing method for copper two-tube semi-circular tubes to be directly applicable to steel heat exchangers, causing the problem of low yield rate.

[0058] It is understandable that when using the existing semi-circular tubes of copper two-piece devices to braze the semi-circular tubes of steel heat exchangers, the following problems exist. First, the brazing heating temperature is uneven, the process is unstable, and the brazing qualification rate is low. Second, there are oxidation and blackening defects in the appearance of the steel semi-circular tube welds and the base metal near the welds. Third, the flux residue after welding is obvious, and the residual flux accumulates on the weld surface, making it impossible for workers to visually inspect the welding quality, and there is a potential quality hazard of welding leakage.

[0059] Therefore, the present invention aims to improve the brazing quality by proposing a new type of automatic brazing device, especially for the application scenarios of "aluminum replacing copper" and "steel replacing copper". This automatic brazing device can improve the brazing effect when using aluminum and steel as alternative materials, and solve the problems of uneven temperature, oxidation and blackening, and flux residue existing in traditional brazing methods. Of course, it can also provide higher brazing quality when dealing with traditional pure copper materials, realizing a multi-material adaptable solution. In addition, the application scope of this automatic brazing device is not limited to the air-conditioning production industry, and it is also applicable to other fields with high requirements for brazing processes, such as the automotive manufacturing, electronic component production, and aerospace industries. Thus, the automatic brazing device provided by the present invention not only helps to alleviate the dependence of specific industries on scarce resources, but also improves the product quality and production efficiency of products involving brazing processes in multiple industries, providing strong technical support for the development of related industries.

[0060] In order to improve the brazing quality, in one embodiment, as Figure 1 shown, the automatic brazing device 10 proposed by the present invention includes a brazing module 100, a jetting module 200, and a cooling module 300. When the automatic brazing device 10 brazes the target workpiece 20, the three cooperate to improve the brazing quality.

[0061] Among them, as Figure 2 shown, the workpiece to be welded can be copper tubes, steel tubes, etc. in the evaporator and condenser of an air conditioner.

[0062] In this embodiment, the brazing module 100 is used to braze the target workpiece 20 when receiving a welding instruction. It is understandable that the brazing module 100 is used to heat the target workpiece 20 and to melt the brazing material. The brazing module 100 can be composed of a multi-axis linkage drive component and a high-precision flame and temperature sensing feedback system. When receiving a welding instruction, it may be that the user is instructing the automatic brazing device 10 to enter the welding state, so as to start the brazing work on the target workpiece 20. Among them, the brazing instruction can be triggered manually or automatically after the target workpiece 20 is in place, and the specific method is not limited here.

[0063] It should be noted that for the burner of the brazing module 100, the flame spraying direction can be dynamically adjusted according to the geometric features of the target workpiece 20 and the welding requirements. The burner can be set to directly face the target workpiece 20, such as the vertical heating mode for a straight weld, or adopt an oblique / lateral spraying, such as the tangential heating mode for a semi-circular pipe curved weld, to ensure that the flame heat field always completely covers the area to be welded. Optionally, in view of the thermal conductivity differences between steel and copper / aluminum, the burner is equipped with an adaptive diffuser: a concentrated flame is used when welding copper materials to improve the thermal efficiency, and a wide fan-shaped flame is switched to when processing steel materials to avoid local overheating.

[0064] In addition, the distance between the burner and the target workpiece 20 can be preset and fixed according to the material of the target workpiece 20, and the gas flow rate is dynamically adjusted in combination with the PID algorithm to ensure that a stable brazing temperature can be obtained for different materials (such as 650±10°C for copper pipes and 750±15°C for steel pipes). In this way, the high-efficiency requirements for copper pipe brazing can be met, and the gradient heating characteristics required for steel / aluminum materials can also be adapted.

[0065] Optionally, in view of the poor thermal conductivity and oxidation sensitivity of steel in the scenario of "replacing copper with steel", the brazing module 100 adopts a dynamic power adjustment technology, which automatically adjusts the heating power and moving trajectory by real-time detecting the surface temperature distribution of the target workpiece 20 and based on the preset process parameters (such as material type, weld geometric features).

[0066] Optionally, to evenly distribute the heat field and improve the wetting effect of the filler metal, the brazing module 100 can be equipped with a multi-axis swinging mechanism to realize the dynamic adjustment of the flame spraying path. In a feasible implementation mode, the burner makes a sinusoidal reciprocating motion along the weld direction (the amplitude is adjustable from 2 to 8 mm), which is suitable for the uniform heating of long straight welds and can eliminate the phenomenon of "overheating in the middle and insufficient at both ends" caused by slow heat conduction of steel; in a feasible implementation mode, the flame spraying angle periodically changes within the range of ±15°, which is suitable for the curved surface brazing of semi-circular pipe-like workpieces, and avoids the agglomeration of the filler metal under the action of gravity by changing the heat inflow angle.

[0067] It should be noted that the brazing module 100 can use a combination of oxygen and natural gas, can use oxygen-acetylene, can use compressed air + natural gas, or can use other fuels such as compressed air-acetylene. The specific fuel is not limited here and can be determined according to the application requirements.

[0068] It should also be noted that for the brazing heating heat source, an induction heating method can also be adopted to replace the flame heating, that is to say, the burner can not spray fire but adopt induction heating. The specific heating form is not limited here, mainly for brazing work.

[0069] In this embodiment, the jet module 200 is used to eject a protective gas to provide anti-oxidation protection when the brazing module 100 performs brazing on the target workpiece 20.

[0070] It can be understood that the jet module 200 is used to construct a local inert gas environment to inhibit the oxidation reaction during brazing and assist in the removal of flux residues. The jet module 200 can integrate a multi-nozzle array and / or a gas flow controller. Among them, argon or nitrogen can be used as the protective medium for the protective gas.

[0071] It should be explained that when the metal is heated to a high temperature, it is extremely easy to react with the oxygen in the air, resulting in oxidation on the workpiece to be welded, and then blackening appears on the workpiece to be welded. Among them, oxidation or blackening will hinder the flow and filling of the molten filler metal at the joint, resulting in insufficient welding strength or defects. Therefore, using a protective gas can effectively isolate the welding area from the outside air, avoid the occurrence of oxidation, ensure that the filler metal can be evenly distributed and fully fill the joint gap, so as to form a firm and reliable connection and improve the brazing quality.

[0072] Optionally, during the brazing process, the jet module 200 changes from ejecting an inert gas to ejecting a gas soldering flux. The gas soldering flux is transported to the welding area by nitrogen as a carrier. Once it reaches the welding area and burns at a high temperature, the gas soldering flux will generate a protective flame or other forms of protective layer. This protective layer effectively isolates the oxygen in the outside air and prevents it from contacting the steel pipe and the weld, thus avoiding oxidation of the base metal and the weld. In this way, the risk of oxidation is reduced and the welding quality is improved.

[0073] Optionally, the jet module 200 adopts an adjustable design and can automatically adjust the spraying angle and coverage range according to the shape of the workpiece (such as a semi-circular pipe surface) to ensure a uniform protection effect under complex geometric structures.

[0074] In this embodiment, the cooling module 300 is used to cool the brazed target workpiece 20 after the brazing operation of the brazing module 100 is completed.

[0075] It is understandable that the cooling module 300 realizes the rapid solidification and microstructure optimization of the brazed joint through active temperature control technology, and its structure includes a liquid cooling channel system and / or a temperature gradient controller and / or a cooling rate detection unit. After brazing is completed, the cooling module 300 starts a differential cooling strategy according to material properties (such as the difference in thermal expansion coefficients between steel and filler metal). In a feasible implementation, for a steel heat exchanger, liquid cooling spray is adopted. In the initial stage, a higher cooling rate is used to skip the brittle phase formation temperature range, and in the later stage, it is switched to a slow cooling mode to release residual stress. Optionally, the cooling module 300 can adopt low-temperature nitrogen atomization cooling, which not only prevents overburning of the base material but also inhibits filler metal segregation through rapid solidification, improving the mechanical properties of the joint.

[0076] Optionally, a flow meter can be installed in the liquid cooling channel system to detect the injection flow rate of the liquid in real time. This flow meter can be linked with the control mechanism to dynamically adjust the coolant output according to the weld temperature curve (for example, in the initial stage of steel brazing, a large flow rate of 5 L / min is used for rapid cooling, and in the later stage, it is switched to a small flow rate of 2 L / min for slow cooling). Through closed-loop control with the PID algorithm, the flow regulation accuracy can reach ±0.1 L / min, effectively avoiding the problem of uneven cooling caused by flow fluctuations. For example, in the brazing of aluminum tubes, the flow meter automatically matches the flow rate according to the material thickness (3 L / min for 1 mm thickness and 4.5 L / min for 2 mm thickness), ensuring both prevention of deformation and avoidance of overcooling.

[0077] Optionally, in addition to the liquid cooling channel system, the cooling module 300 also has an air cooling channel system. The air cooling system uniformly dissipates heat from the target workpiece 20 through air flow, avoiding microcracks caused by local rapid cooling. The air cooling channel system is turned on after the cooling work of the liquid cooling channel system is completed, which can maintain the temperature drop and can clean the water quality or impurities on the target workpiece 20. Optionally, the air cooling channel system adopts a high-pressure system to enhance the blowing effect.

[0078] It is understandable that after brazing is completed, the brazed workpiece needs to be quickly cooled to fix the structure of the brazed joint. Through the cooling module 300, problems such as grain growth or changes in the material properties at the joint caused by the slow natural cooling speed of the brazed workpiece can be avoided. Rapid cooling can also reduce the thermal stress caused by the temperature gradient. This stress may cause workpiece deformation or cracks at the joint, affecting the overall structural stability and durability. In addition, the cooling gas can also limit the oxidation reaction by reducing the time the workpiece is in a high-temperature state to avoid blackening. Although rapid cooling itself cannot directly prevent the oxidation reaction, it shortens the time the metal is exposed to the temperature and environment that may cause oxidation, thereby reducing the probability and thickness of the oxide layer formation, which helps to improve the brazing quality.

[0079] In a feasible implementation, the brazing module 100 can cooperate with an external wire feeding mechanism for brazing. The wire feeding mechanism controls the feeding speed and angle of the brazing filler metal (such as silver-based or copper-phosphorus brazing filler metal) to make the molten brazing filler metal fully wet the surface of the base material. In some feasible implementations, the manipulator positions the target workpiece 20 (such as a steel / aluminum heat exchanger) to the welding station 410, and the jetting module 200 starts the pre-purging program to remove surface impurities using an inert gas; subsequently, the brazing module 100 uniformly heats the weld area through a swingable burner, and at the same time the wire feeding mechanism accurately conveys the brazing filler metal according to the material type to ensure that the molten brazing filler metal fully wets the surface of the base material. During this process, the jetting module 200 continuously provides dynamic gas protection to prevent oxidation; after brazing is completed, the cooling module 300 first starts the liquid cooling channel for rapid cooling, then switches to a high-pressure air cooling system to achieve uniform slow cooling, and cleans the surface of the workpiece through the air flow. In this way, full-automatic operation from pre-treatment, precise brazing to controllable cooling is realized, effectively solving problems such as uneven temperature, serious oxidation and large residual stress in the traditional method, and significantly improving the brazing quality and production efficiency of the "steel replacing copper" and "aluminum replacing copper" applications.

[0080] It should be noted that the brazing module 100 and the jetting module 200 need to be arranged at the same station (because they need to work simultaneously), and the cooling module 300 can be arranged at the same station as the brazing module 100 and the jetting module 200, or can be arranged at another station. When the cooling module 300 is arranged at another station, the automatic brazing equipment can also include a motion module 400, and the motion module 400 is used to transfer the target workpiece 20 to the cooling module 300 after the brazing of the target workpiece 20 is completed.

[0081] In summary, the automatic brazing device 10 effectively solves the problem of low brazing quality of traditional automatic brazing equipment. Among them, the automatic brazing device 10 includes a brazing module 100, a jetting module 200 and a cooling module 300; first, the brazing module 100 brazes the target workpiece 20, and secondly, the jetting module 200 sprays a protective gas when the brazing module 100 sprays fire. By spraying the protective gas, inert gas protection is provided during the preheating and brazing processes, reducing the oxidation defect rate of the target workpiece 20. Finally, through the cooling module 300, it is avoided that the target workpiece 20 is continuously at too high a temperature and causes oxidation. In this way, the automatic process of the automatic brazing device 10 can effectively improve the brazing quality.

[0082] It should be noted that the media sprayed by the jetting module 200 and the cooling module 300 need to cover the entire target workpiece 20, rather than just the position where brazing is required on the target workpiece 20, so as to further improve the brazing quality.

[0083] In one embodiment, such as Figure 1As shown, the automatic soldering device 10 further includes a motion module 400, which is used to transport the target workpiece 20 to move on the processing path.

[0084] Optionally, the motion module 400 adopts a servo drive system. Through a linear guide rail or a robotic arm, it controls the bearing platform to move along a preset processing path. The target workpiece 20 can be arranged on the bearing platform and fixed to the bearing platform through a fixing member. It can be understood that the motion module 400 uses a linear guide rail or a robotic arm. Among them, the linear guide rail is suitable for situations that require linear or simple curve motion, while the robotic arm is more suitable for complex paths or scenarios that require higher degrees of freedom.

[0085] Among them, the processing path is the motion path that the motion module 400 can drive the bearing platform or the target workpiece 20 to pass through. It can be a straight line, and of course it can also be a broken line and a curve. The specific form is not limited here.

[0086] In this embodiment, a welding station 410 and a cooling station 420 are sequentially arranged on the processing path. It should be noted that the sequential arrangement is based on the motion direction of the motion module 400, that is, the motion module 400 can drive the target workpiece 20 to move from the welding station 410 to the cooling station 420.

[0087] In this embodiment, the soldering module 100 and the air jet module 200 are arranged corresponding to the position of the welding station 410, and the cooling module 300 is arranged corresponding to the position of the cooling station 420.

[0088] It can be understood that at the welding station 410, the soldering module 100 and the air jet module 200 form a cooperative operation system. When the soldering module 100 is performing the flame spraying work, the air jet module 200 performs the air jet work to reduce the probability of oxidation during the soldering of the workpiece to be welded. At the cooling station 420, the cooling module 300 can spray liquid and / or air on the target workpiece 20 to achieve cooling.

[0089] In a feasible implementation manner, the automatic soldering device 10 adopts a linear layout with a single cooling station 420 and a single welding station 410. Its working process is as follows: The motion module 400 transports the target workpiece 20 from the loading area to the welding station 410. At the welding station 410, the soldering device heats the weld area to the set temperature, and at the same time, the wire feeding mechanism supplies the solder. The air jet module 200 continuously sprays inert gas to prevent oxidation to perform the soldering work. After soldering is completed, the workpiece is sent to the cooling station 420, and the liquid cooling module realizes the rapid cooling of the target workpiece 20. In this way, the soldering quality can be improved.

[0090] In one embodiment, as Figure 3As shown, a cooling station 420, a welding station 410, and a cooling station 420 are sequentially arranged on the processing path. The number of the cooling modules 300 is two, and the cooling modules 300 are arranged corresponding to the positions of the cooling stations 420 one by one.

[0091] Optionally, the motion module 400 is used to transport the target workpiece 20 to move bidirectionally on the processing path. That is to say, the motion module 400 can drive the target workpiece 20 to move back and forth between the three stations.

[0092] It can be understood that through the layout of the double cooling stations 420 and the bidirectional motion design, the working efficiency of the automatic brazing device 10 can be effectively improved. The cooling station 420, the welding station 410, and the cooling station 420 are sequentially arranged on the processing path. That is to say, the two cooling modules 300 can be respectively arranged in front of and behind the brazing module 100 on the processing path. In a feasible embodiment, the motion module 400 is used to drive the target workpiece 20 to move linearly. Given a direction, it is from left to right or from right to left. Then the two cooling stations 420 can be respectively arranged on the left and right sides of the welding station 410.

[0093] It should be noted that in this embodiment, by setting two cooling stations 420 (both configured with independent cooling modules 300) and cooperating with the bidirectional motion control, an efficient parallel cooling process is achieved, fundamentally solving the common "cooling blockage" problem in the single cooling station 420 system. Its core advantage is that when the first workpiece is brazed at the welding station 410, the motion module 400 transfers it to the first cooling station 420 for cooling; at this time, if the second workpiece is brazed, the motion module 400 can immediately send it to the second cooling station 420 without waiting for the first workpiece to cool down. This design completely decouples the cooling process from the welding process, forming a continuous production line.

[0094] In a feasible implementation, taking the mass production of an air-conditioning steel heat exchanger as an example, the motion module 400 first sends the target workpiece A to the welding station 410. After the brazing module 100 completes the brazing of the target workpiece A, the motion module 400 immediately transfers it to the cooling station 420 on the left, and the cooling module 300 on the left cools the target workpiece A; at this time, the target workpiece B enters the welding station 410, and the brazing module 100 performs brazing on the target workpiece B. When the target workpiece B is welded, if the cooling module 300 in the cooling station 420 on the left is still processing the cooling of the target workpiece A (for example, thick-walled parts require an extended cooling time), the motion module 400 directly sends the target workpiece B to the cooling station 420 on the right, and the cooling module 300 on the right cools the target workpiece B for synchronous cooling; after the target workpiece A is cooled and removed, the brazing and cooling of the target workpiece C can be seamlessly connected.

[0095] In one embodiment, the automatic brazing device 10 further includes a cleaning module, which is arranged corresponding to the position of the cooling station 420; the cleaning module is used to remove impurities on the target workpiece 20 after the cooling module 300 completes the cooling work.

[0096] Optionally, the cleaning module and the cooling module 300 can be integrally arranged. Figure 4 and Figure 5 for Figure 1 and Figure 3 the nozzles corresponding to the cooling station 420 in the figure, that is, the cooling and cleaning functions are integrated into a single module, and coordinated operation is achieved through a dual-channel system. The cooling liquid channel provides precisely controllable liquid cooling for temperature reduction, while the multi-functional gas channel can be pre-set with one or more combinations of three working modes according to process requirements. Among them, one is a conventional cooling gas for gentle heat dissipation, one is a high-pressure gas for strong cleaning, and one is a high-pressure cooling gas that simultaneously achieves rapid temperature reduction and surface treatment. It can be understood that the integrated setting is particularly suitable for production environments with limited space, effectively saving the volume of the automatic brazing device 10. Figure 5 In the figure, the upper row of holes is the water outlet holes, corresponding to the cooling module 300, to spray cooling liquid, and the lower row of holes is the air outlet holes, corresponding to the cleaning module, to spray cleaning gas, such as high-pressure gas.

[0097] Optionally, not shown in the figure, the cleaning module and the cooling module 300 are separately arranged, and the cooling module 300 operates independently of the cleaning module, so as to provide higher flexibility for special process requirements. The cooling module 300 supports a variety of configurations from single-channel to multi-channel, and the best cooling strategy can be selected according to material characteristics (such as thickness, thermal sensitivity); the independent cleaning module is equipped with a high-pressure rotating nozzle and an electrostatic eliminator, which is specifically responsible for the deep cleaning of the workpiece after welding. The advantage of this architecture is that the module settings can be carried out targeted to improve the working efficiency and effectiveness of the module, which is beneficial to the soldering process that requires high precision.

[0098] It should also be noted that after the workpiece to be welded is heated and the molten filler metal solidifies to form a weld seam, the air jet module 200 sprays clean cooling water onto the workpiece to be welded, and the weld seam and pipes are rapidly cooled under the coverage of normal-temperature cooling water. Moreover, due to the large difference in the expansion coefficients of the residual flux, filler metal and steel, the residual flux will rapidly contract and peel off from the filler metal and the steel base material, and can be automatically shed under the action of the sprayed water, so as to achieve the purpose of removing the residual flux. After the residual flux falls off, high-pressure dry air is blown onto the target workpiece 20 to purge the workpiece to be welded and the nearby area, and the surface flux residue and moisture are purged clean, so as to ensure that the weld seam and the nearby area of the workpiece to be welded are clean and free of impurities.

[0099] In one embodiment, as Figure 1 shown, a transition station 430 is further included between the welding station 410 and the cooling station 420 corresponding to the processing path; the motion module 400 can drive the target workpiece 20 to move back and forth between the welding station 410, the transition station 430 and the cooling station 420. It can be understood that, as Figure 3 shown, when the cooling station 420, the welding station 410 and the cooling station 420 are sequentially arranged on the processing path, two transition stations 430 can also be arranged, which are respectively arranged at the positions between the cooling station 420 and the welding station 410.

[0100] In this embodiment, the automatic soldering device 10 further includes a transition protection module 500, which is arranged corresponding to the position of the transition station 430, and the transition protection module 500 is used to spray a protective gas to provide anti-oxidation protection when the target workpiece 20 moves between the welding station 410 and the cooling station 420.

[0101] Since the target workpiece 20 coming out of the welding station 410 has not been cooled and the temperature is still very high, there is a possibility of oxidation. Therefore, a transition station 430 is required.

[0102] It can be understood that by introducing the transition station 430 and the transition protection module 500, the heat management and anti-oxidation protection system of the automatic soldering device 10 is further improved. On the processing path, the transition station 430 is strategically arranged between the soldering station 410 and the cooling station 420. When a double-cooling-station 420 layout is adopted, two transition stations 430 can be correspondingly set at the connections between the soldering station 410 and the front and rear cooling stations 420 respectively. Among them, the transition protection module 500 can be composed of multiple groups of gas nozzles and an intelligent flow control system. When high-temperature workpieces (about 600 - 800 °C for steel, about 400 - 500 °C for aluminum) pass through the transition area, nitrogen or argon can be sprayed to form a local inert environment, controlling the oxygen concentration below 200 ppm and effectively preventing the secondary oxidation of the workpieces during the transfer process.

[0103] It should be noted that in some embodiments, the system is specifically optimized for the following two scenarios: one is that when the cooling station 420 is temporarily full, the workpiece can stay in the transition station 430 for a short time (<30 seconds) and continuously obtain gas protection; the other is that for complex workpieces with multi-layer soldering, segmented soldering can be achieved through the cyclic movement of "soldering - transition protection - cooling" to avoid overall overheating and deformation. The other is that the transition protection module 500 can be linked with the central control system to automatically adjust the gas flow according to the workpiece material and temperature curve (5 L / min for copper parts, 8 L / min for steel parts, 6 L / min for aluminum parts), reducing gas consumption while ensuring the protection effect.

[0104] In one embodiment, as Figure 6 shown, the automatic soldering device 10 further includes a mounting table, and the soldering module 100, the air jet module 200, and the cooling module 300 are respectively arranged on the mounting table.

[0105] It can be understood that in this embodiment, different from the above-mentioned embodiment, in the above-mentioned embodiment, the soldering module 100 and the air jet module 200 are arranged at the same station, while the cooling module 300 is arranged at another station, and in this embodiment, the soldering module 100, the air jet module 200, and the cooling module 300 are respectively arranged on the mounting table, that is, arranged at the same station. The automatic soldering device 10 can be three processes of automatic soldering, protection, and cooling.

[0106] Therefore, in this embodiment, a highly integrated automatic soldering device 10 is proposed. By integrating the soldering module 100, the jet module 200, and the cooling module 300 all on the same mounting table, a synchronized operation process of "soldering - protection - cooling" in one body is achieved. Compared with the traditional multi - station decentralized layout, this compact design has the following remarkable features: First, the three functional modules are spatially coordinated and arranged with the mounting table as the reference platform. The soldering module 100, the jet module 200, and the cooling module 300 adopt a layered structure, that is, the three are set at different heights for easy operation, ensuring that the entire process from heating and soldering to forced cooling can be completed at a single station.

[0107] Optionally, through precise timing control, the actions of the three modules can achieve millisecond - level linkage - when the soldering module 100 finishes soldering, the jet module 200 continuously maintains the protective atmosphere, and at the same time, the cooling module 300 immediately intervenes to cool down. The entire process does not require the workpiece to move, completely eliminating the heat loss and oxidation risk caused by transfer in the traditional multi - station system.

[0108] In addition, the mounting table adopts a modular design and can flexibly adjust the relative positions of the modules according to the workpiece size (such as micro - electronic components or large heat exchangers).

[0109] In this embodiment, as Figure 6 shown, the automatic soldering device 10 further includes a cleaning module 600 and a motion module 400. The cleaning module 600 is used to remove impurities on the target workpiece 20, and the motion module 400 is used to transport the target workpiece 20 to move on the processing path. A welding station 410 and a cleaning station 440 are sequentially arranged on the processing path. The soldering module 100, the jet module 200, and the cooling module 300 are arranged corresponding to the position of the welding station 410, and the cleaning module 600 is arranged corresponding to the position of the cleaning station 440.

[0110] It should be explained that the mounting table is divided into two sides and is respectively installed on both sides of the processing path of the motion module 400; of course, the mounting table can have only one side and be installed on either side of the processing path.

[0111] Optionally, the motion module 400 adopts a servo drive system. Through a linear guide rail or a robotic arm, it controls the carrying platform to move along the preset processing path. The target workpiece 20 can be placed on the carrying platform and fixed on the carrying platform through a fixing member. It can be understood that the motion module 400 uses a linear guide rail or a robotic arm, where the linear guide rail is suitable for situations requiring linear or simple curve motion, while the robotic arm is more suitable for complex paths or scenarios requiring higher degrees of freedom.

[0112] Among them, the processing path is the movement path that the motion module 400 can drive the bearing platform or the target workpiece 20 to pass through. It can be a straight line, or of course a broken line or a curve, and no specific limitation is made here.

[0113] It should be noted that the sequential setting is based on the movement direction of the motion module 400, that is, the motion module 400 can drive the target workpiece 20 to move from the welding station 410 to the cleaning station 440.

[0114] It can be understood that at the welding station 410, the brazing module 100, the jet module 200 and the cooling module 300 form a collaborative operation system. When the brazing module 100 is performing the flame spraying work, the jet module 200 performs the jetting work to reduce the probability of oxidation during the brazing of the workpiece to be welded. After the brazing is completed, the cooling module 300 can spray liquid and / or jet air on the target workpiece 20 to achieve cooling. After cooling, the motion module 400 drives the target workpiece 20 to move to the cleaning module 600 to clean the impurities on the target workpiece 20.

[0115] It should be noted that after the workpiece to be welded is heated and the molten filler metal solidifies to form a weld seam, the jet module 200 sprays clean cooling water on the workpiece to be welded, and the weld seam and the pipe are quickly cooled under the coverage of normal temperature cooling water. Moreover, due to the large difference in the expansion coefficients of the residual flux, the filler metal and steel, the residual flux will rapidly contract and peel off from the filler metal and the steel base material. Under the action of the sprayed water, it can be automatically peeled off, so as to achieve the purpose of removing the residual flux. After the residual flux falls off, high-pressure dry air is blown onto the target workpiece 20 to blow and sweep the workpiece to be welded and the nearby area, and the surface flux residue and moisture are blown and swept clean, so as to ensure that the weld seam and the nearby area of the workpiece to be welded are clean and free of impurities.

[0116] In a feasible implementation manner, at the welding station 410, after the brazing module 100 completes the heating and brazing, the jet module 200 immediately sprays normal temperature cooling water (flow rate 5 - 10 L / min) to cover the weld seam area, and uses the water quenching effect to quickly cool the weld seam to below 200 °C. This process has two key effects: one is to avoid grain coarsening caused by slow cooling through the efficient heat conduction of the water medium; the other is to utilize the significant difference in the thermal expansion coefficients among the flux, the filler metal and the steel base material to generate interfacial shear stress during the cooling and shrinking process, so as to promote the automatic peeling of the residual flux from the weld seam surface. Subsequently, the workpiece enters the cleaning station 440, and the cleaning module 600 starts to impact the weld seam from multiple angles with high-pressure air to thoroughly remove the loosened flux particles or excess moisture.

[0117] It should also be noted that the brazing module 100, the jet module 200, and the cooling module 300 are respectively arranged on the mounting table, which can eliminate the need for the transition station 430 and the transition protection module 500. Since the cooling module 300 starts immediately after brazing is completed, the target workpiece 20 transported to the cleaning module 600 has actually been cooled down and will not oxidize again. Therefore, there is no need to set up the transition station 430 and the transition protection module 500. In this way, the volume of the automatic brazing device 10 can also be reduced.

[0118] For the convenience of understanding, the automatic brazing device 10 is now divided into a first solution (such as Figure 1 and Figure 3 ) and a second solution (such as Figure 6 ). The first solution is a scheme where the brazing device and the jet device are at the same station, but the cooling device is at another station. The second solution is a scheme where the brazing device, the jet device, and the cooling device are on the mounting table.

[0119] In an embodiment, as Figure 1 shown, the brazing module 100 includes a first burner row 110 and a second burner row 120. The target workpiece 20 is arranged between the first burner row 110 and the second burner row 120. The first burner row 110 and the second burner row 120 are used to heat the target workpiece 20 respectively.

[0120] It can be understood that this embodiment adopts a double-burner-row symmetric heating design. By applying heat sources synchronously from both sides of the target workpiece 20 through the first burner row 110 and the second burner row 120, more precise temperature field control can be achieved. The two burner rows are arranged in mirror symmetry, and the distance between them can be automatically adjusted according to the thickness of the workpiece (adjustment range: 20 - 150 mm). In some cases, for thin-walled workpieces (such as 1 mm copper pipes), the distance between the burner rows is reduced to 20 - 30 mm, and low-power flames are used to prevent overheating and deformation. In some cases, for thick-walled workpieces (such as 5 mm steel plates): the distance between the burner rows is expanded to 100 - 150 mm, and the flame intensity is increased to ensure sufficient heat penetration. Optionally, this adjustment function is achieved by a servo motor driving a slide rail to ensure that workpieces of different specifications can obtain the optimal heating effect.

[0121] It should be noted that the setting of the symmetric burner rows can have the following beneficial effects. First, single-burner-row heating is likely to cause the temperature on one side close to the burner row to be too high, making the brazing filler metal flow towards the high-temperature area and resulting in uneven weld filling. Double-burner-row symmetric heating forms a balanced heat field, enabling the brazing filler metal to spread evenly on the surface of the base material and improving the weld density. Second, the spraying angles of the two burner rows can be adjusted within a certain angle range. By adjusting the included angle, the flame coverage range can be optimized to ensure that each welding point of the workpiece with a complex structure is evenly heated. Third, the collaborative work of the two heat sources improves the heating efficiency.

[0122] In one embodiment, the brazing module 100 further includes a first driving mechanism and a second driving mechanism. The first driving mechanism is drivingly connected to the first burner row 110, and the second driving mechanism is drivingly connected to the second burner row 120. The first driving mechanism and the second driving mechanism are configured to drive the first burner row 110 and the second burner row 120 to reciprocate along a first direction respectively.

[0123] It can be understood that in this embodiment, the brazing module 100 independently controls the movements of the first burner row 110 and the second burner row 120 through the first driving mechanism and the second driving mechanism respectively. The two driving mechanisms (such as servo motor + ball screw) can precisely adjust the moving speed and position of the burner row to ensure that the dual burner rows can dynamically adjust the heating trajectory according to the shape of the workpiece. In this way, the movement shortens the residence time of the flame at a single point, avoiding uneven heating, resulting in partial overheating and partial underheating.

[0124] Optionally, the first direction is not perpendicular to the length direction of the target workpiece 20. In this way, the flame scanning path covers a wider range, avoiding local temperature fluctuations caused by linear reciprocation. For example, when welding the circumferential seam of a steel pipe, the burner row moves along a spiral trajectory to achieve uniform heating without dead angles.

[0125] Optionally, the first driving mechanism and the second driving mechanism can also drive the first burner row 110 and the second burner row 120 to displace towards each other's positions.

[0126] In one embodiment, the brazing module 100 further includes a control mechanism, a first gas flowmeter, and a second gas flowmeter. The first gas flowmeter is configured to collect the gas flow output by the first burner row 110, and the second gas flowmeter is configured to collect the gas flow output by the second burner row 120. The control mechanism is configured to control the gas spraying amount of the first burner row 110 according to the gas flow collected by the first gas flowmeter, and control the gas spraying amount of the second burner row 120 according to the gas flow collected by the second gas flowmeter.

[0127] It can be understood that in this embodiment, through the integration of high-precision gas flow detection and a closed-loop control system, intelligent gas management of the brazing module 100 is achieved. The first gas flowmeter and the second gas flowmeter respectively detect the gas flow data of the first burner row 110 and the second burner row 120 in real time, and transmit the signals to the control mechanism (PLC or dedicated controller). Based on the preset process parameters and real-time flow feedback, the control mechanism dynamically adjusts the gas supply amounts of the two burner rows through a proportional regulating valve to ensure that the heat output of the dual burner rows always matches the process requirements.

[0128] Optionally, the control mechanism may control the movement of the first burner row 110 and the second burner row 120 respectively according to the situation of the target workpiece 20, or control the first burner row 110 and the second burner row 120 to work with different gas flow rates respectively.

[0129] Optionally, the first gas flowmeter and the second gas flowmeter adopt thermal mass flow sensors.

[0130] For the first solution, the first burner row 110 and the first driving mechanism are arranged on the first side of the processing path, the second burner row 120 and the second driving mechanism are arranged on the second side of the processing path, and the target workpiece 20 is arranged on the processing path; for the second solution, the first burner row 110 and the first driving mechanism are arranged on one side of the installation table, and the second burner row 120 and the second driving mechanism are arranged on the other side of the installation table.

[0131] In an embodiment, as Figure 1 shown, the jet module 200 includes a first jet assembly 210 and a second jet assembly 220. The target workpiece 20 is arranged between the first jet assembly 210 and the second jet assembly 220. The first jet assembly 210 and the second jet assembly 220 are used to spray protective gases respectively to cover both sides of the target workpiece 20.

[0132] It can be understood that through the symmetrically arranged first jet assembly 210 and second jet assembly 220, a full - range gas coverage of both sides of the target workpiece 20 is achieved. The two jet assemblies adopt an annular or array - type nozzle layout, and inert gases (such as nitrogen, argon) are sprayed simultaneously from the upper and lower or left and right directions of the workpiece respectively to form a wrapped gas curtain barrier. This design effectively blocks the contact between air and the high - temperature weld area, and is especially suitable for brazing scenarios of oxidation - prone materials (such as titanium alloy, high - carbon steel). Through bilateral synchronous protection, the oxidation color difference problem caused by insufficient unilateral gas coverage can be eliminated, ensuring that the weld appearance is uniform.

[0133] Among them, the distance between the first jet assembly 210 and the second jet assembly 220 can be preset or determined according to the actual target workpiece 20. For example, if the target workpiece 20 is large, a larger distance is required to ensure full coverage. If the target workpiece 20 is small, the distance between the two can be smaller, and full coverage can also be ensured.

[0134] In one embodiment, the jet module 200 further includes a control mechanism, a third gas flowmeter, and a fourth gas flowmeter. The third gas flowmeter is used to collect the flow rate of the shielding gas output by the first jet assembly 210, and the fourth gas flowmeter is used to collect the flow rate of the shielding gas output by the second jet assembly 220. The control mechanism is used to control the gas injection volume of the first jet assembly 210 according to the gas flow rate collected by the third gas flowmeter, and control the gas injection volume of the second jet assembly 220 according to the gas flow rate collected by the fourth gas flowmeter.

[0135] It can be understood that, in order to ensure the best anti-oxidation protection during the soldering process, the third gas flowmeter and the fourth gas flowmeter are respectively used to detect the flow rate of the shielding gas (such as nitrogen or argon) output by the first jet assembly 210 and the second jet assembly 220. Optionally, the third gas flowmeter collects the gas flow rate data of the first jet assembly 210, while the fourth gas flowmeter collects the data of the second jet assembly 220. These real-time flow rate data are then transmitted to the control mechanism, which precisely adjusts the gas injection volume of each jet assembly based on this information. In this way, it can be ensured that the two jet assemblies dynamically adjust their outputs according to actual needs to maintain a stable and effective inert gas protection environment, avoiding welding quality problems caused by insufficient or excessive gas supply, such as oxidation or resource waste. This method not only improves the stability and quality of the soldering process but also optimizes the use efficiency of the shielding gas.

[0136] Optionally, when welding a curved weld, the jet assembly can automatically deflect a certain angle to ensure that the gas flow is always perpendicular to the moving direction of the weld. For workpieces with varying thicknesses, the system automatically increases the gas flow rate in the weak area through the feedback of the pressure sensor.

[0137] In one embodiment, as Figure 7 and Figure 8 shown, both the first jet assembly 210 and the second jet assembly 220 include a plurality of first nozzles 230, and each first nozzle 230 is provided with a plurality of air outlet holes for outputting the shielding gas.

[0138] It can be understood that through the multi-point and dispersed gas injection method, a more uniform and comprehensive gas coverage of the surface of the target workpiece 20 is achieved. Among them, the layout of the multiple first nozzles 230 can expand the coverage range of gas protection, ensuring that each area of the target workpiece 20 can be effectively wrapped by the protective gas, thereby blocking oxygen in the air and preventing oxidation reactions during the high-temperature brazing process. In addition, the multiple air holes on each first nozzle 230 further refine the gas distribution, enabling the protective gas to be ejected in a more uniform manner, avoiding situations where the local gas concentration is too high or too low. In this way, not only is the gas utilization efficiency improved, but it can also better adapt to workpieces with complex geometries (such as curved surfaces or irregular parts), providing stable and efficient anti-oxidation protection for the brazing process, thereby significantly improving the brazing quality.

[0139] Optionally, as Figure 8 shown, the multiple air holes on the first nozzle 230 can be arranged in multiple rows, and of course, they can also be arranged in multiple columns, further increasing the spraying range of the nozzle.

[0140] For the first solution, the first gas injection assembly 210 is arranged on the first side of the processing path, the second gas injection assembly 220 is arranged on the second side of the processing path, and the target workpiece 20 is arranged on the processing path; for the second solution, the first gas injection assembly 210 is arranged on one side of the mounting table, and the second gas injection assembly 220 is arranged on the other side of the mounting table.

[0141] In an embodiment, as Figure 1 or Figure 6 shown, the cooling module 300 includes a first cooling component 310 and a second cooling component 320. The target workpiece 20 is arranged between the first cooling component 310 and the second cooling component 320. The first cooling component 310 and the second cooling component 320 are used to cool the brazed target workpiece 20 after the brazing operation of the brazing module 100 is completed.

[0142] It can be understood that the first cooling component 310 and the second cooling component 320 ensure that after brazing is completed, the target workpiece 20 can be cooled quickly and evenly. The first cooling component 310 and the second cooling component 320 work together to cool the workpiece from both sides, enabling heat to be dissipated more evenly from the workpiece, avoiding problems such as thermal stress concentration or deformation caused by inconsistent local cooling rates. Through this symmetric cooling design, not only can the cooling efficiency be improved, but the structural stability and dimensional accuracy of the workpiece can also be ensured during the cooling process, thereby improving the quality of the final product.

[0143] In an embodiment, as Figure 1As shown, both the first cooling assembly 310 and the second cooling assembly 320 include a plurality of second spray heads 330. A plurality of liquid outlet holes are provided on the second spray heads 330, and the plurality of liquid outlet holes are used to spray cooling liquid to cool the target workpiece 20 after brazing.

[0144] It can be understood that a plurality of second spray heads 330 are used to spray cooling liquid to cool the target workpiece 20 after brazing. The second spray heads 330 are designed with multiple liquid outlet holes, which enhances the uniformity and coverage of the cooling effect. By precisely controlling the spraying direction and flow rate of the cooling liquid, effective cooling of workpieces with different shapes and sizes can be achieved. In addition, since the cooling liquid is dispersed and sprayed through multiple liquid outlet holes, this helps to form a finer and more uniform distribution of coolant droplets, thereby avoiding local overcooling or insufficient cooling. This design not only improves the controllability of the cooling process, effectively shortens the cooling time, but also enhances the coverage integrity, thus improving the brazing quality.

[0145] For the first solution, as Figure 1 shown, the first cooling assembly 310 is arranged on the first side of the processing path, the second cooling assembly 320 is arranged on the second side of the processing path, and the target workpiece 20 is arranged on the processing path; for the second solution, as Figure 6 shown, the first cooling assembly 310 is arranged on one side of the mounting table, and the second cooling assembly 320 is arranged on the other side of the mounting table.

[0146] For the solution where the cooling module 300 and the cleaning module are integrally arranged in the first solution, as Figure 1 、 Figure 4 and Figure 5 shown, the second spray heads 330 can be designed with two rows of holes. The first row of holes is the liquid outlet holes, configured as the cooling module 300, and the second row of holes is the air outlet holes, configured as the cleaning module.

[0147] For the first solution, in one embodiment, as Figure 1 shown, the transition protection module 500 includes a first transition component 510 and a second transition protection. The first transition component 510 is arranged on the first side of the processing path, and the second transition component 520 is arranged on the second side of the processing path. Optionally, as Figure 9 and Figure 10 shown, both the first transition component 510 and the second transition component 520 have a third spray head 530. A plurality of air outlet holes are provided on the third spray head 530 to blow out protection gas to cover the target workpiece 20.

[0148] For the cleaning module 600 of the second solution, in one embodiment, as Figure 6As shown, the cleaning module 600 includes a first cleaning component 610 and a second cleaning component 620, which are respectively arranged on both sides of the processing path to blow air to the target workpiece 20 in all directions to blow away impurities on the target workpiece 20. Optionally, as Figure 11 and Figure 12 shown, the first cleaning component 610 and the second cleaning component 620 are provided with a fourth nozzle 630, and the fourth nozzle 630 is provided with a plurality of air outlets for blowing high-pressure gas to the target workpiece 20.

[0149] In an embodiment, as Figure 1 shown, the automatic soldering device 10 further includes a water tank module 700, the target workpiece 20 is arranged in the water tank module 700, and the water tank module 700 is used to hold the water sprayed by the cooling module 300.

[0150] It can be understood that the target workpiece 20 is placed inside the water tank module 700. After the soldering process is completed, the cooling module 300 sprays coolant into the water tank to rapidly cool the workpiece. The water sprayed by the cooling module 300 will be collected by this water tank module 700, so as to avoid the water sprayed by the cooling module 300 splashing around. In addition, using the water tank module 700 can also recycle and reuse the coolant, which is not only beneficial to saving resources but also can reduce production costs.

[0151] Optionally, the water tank module 700 is arranged on the processing path and works in coordination with the motion component. Specifically, the motion component can indirectly move the target workpiece 20 by driving the entire water tank module 700. This means that during the soldering and cooling processes, there is no need to directly carry the workpiece in a high-temperature state, reducing the potential damage risk caused by handling. At the same time, this method also facilitates the realization of an automated continuous production process, improving the flexibility and efficiency of production.

[0152] In an embodiment, as Figure 1 shown, the automatic soldering device 10 further includes a fixing device 800 for fixing the target workpiece 20 at the corresponding position. It can be understood that during the high-temperature heating or cooling process, the target workpiece 20 may be displaced due to thermal expansion, cold shrinkage or other external force factors, thereby affecting the welding quality. By using the fixing device 800, this situation can be effectively avoided, so as to ensure that the soldering module 100 can accurately align with the weld area for heating and melting operations. In addition, the fixed workpiece also helps the gas jetting module 200 to provide uniform gas protection and the cooling module 300 to achieve an efficient cooling effect. In this way, the soldering work can be made more uniform, which helps to improve the soldering quality.

[0153] Optionally, the fixing device 800 can be designed in the form of a clamping assembly and directly set on the processing path. The function of the clamping assembly is to firmly clamp the target workpiece 20 mechanically (such as by jaws or chucks) to prevent it from moving during the processing. Optionally, when the moving assembly drives the clamping assembly, the target workpiece 20 will also be accurately transferred to different processing stations (such as the welding station 410 or the cooling station 420). This integrated design not only simplifies the workpiece positioning and transfer process, but also improves production efficiency and reduces manual intervention, especially suitable for the brazing process scenarios that require high precision and high consistency.

[0154] Optionally, the fixing device 800 is arranged in the water tank module 700. By combining the fixing device 800 with the water tank module 700, it is possible to avoid the workpiece from shifting due to water flow impact or buoyancy during the cooling stage, so as to ensure that the coolant can evenly cover the workpiece surface and achieve the best cooling effect. At the same time, this integrated design can also save space, making the entire automatic brazing device 10 more compact and efficient, which is very suitable for the processing requirements of workpieces with complex shapes.

[0155] Combined with the above embodiments, as Figure 1 or Figure 3 shown, for the first solution, a feasible implementation method is given. During brazing, the steel heat exchanger is placed on the fixing device 800 at the welding station 410, and the steel heat exchanger remains stationary (static), and the first burner row 110 and the second burner row 120 swing left and right to heat the steel heat exchanger. After the brazing heating is completed, the motion module 400 automatically transports the steel heat exchanger (together with the fixing device 800 and the water tank module 700) on the slide rail to the cooling station 420, and the first cooling component 310 and the second cooling component 320 of the cooling module 300 spray water to cool the steel heat exchanger respectively. After the water spraying is completed, high-pressure dry compressed air is used to blow the surface of the steel heat exchanger to remove the flux residues and moisture and other sundries on the surface of the steel heat exchanger. Of course, between moving from the welding station 410 to the cooling station 420, there is also a transition station 430. Here, the first transition component 510 and the second transition component 520 of the transition protection module 500 continuously supply protective gas to the steel heat exchanger.

[0156] Combined with the above embodiments, as Figure 6As shown, for the second solution, during brazing, the steel heat exchanger is placed on the fixing device 800, and the steel heat exchanger remains stationary (static). The first burner row 110 and the first burner row 110 swing left and right to heat the steel heat exchanger, and the first jetting assembly 210 and the second jetting assembly 220 jet air in real time to provide protection during brazing. After the steel heat exchanger is heated, it remains stationary, and the filler metal and the base metal are under the protection of inert gas to solidify the filler metal to form a weld seam. The cooling module 300 automatically sprays water on the weld seam and the high-temperature semi-circular pipe to cool the weld seam rapidly, and the surface brazing flux residue detaches from the weld seam. After the water spraying is completed, the movement module 400 automatically transports the steel heat exchanger (together with the fixing device 800 and the water tank module 700) to the cleaning station 440, and the first cleaning assembly 610 and the second cleaning assembly 620 automatically spray high-pressure dry compressed air to blow the surface of the steel heat exchanger to remove the brazing flux residue, moisture and other impurities on the surface of the steel heat exchanger.

[0157] The present invention also provides a brazing system, which includes an automatic brazing device 10. The specific structure of the automatic brazing device 10 refers to the above-mentioned embodiments. Since this brazing system adopts all the technical solutions of the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one.

[0158] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automatic soldering device (10), characterized in that, The automatic soldering device (10) includes: A soldering module (100) for soldering a target workpiece (20) when receiving a soldering instruction; An air jet module (200) for jetting a protective gas to provide anti-oxidation protection during the soldering operation of the soldering module (100) on the target workpiece (20); and A cooling module (300) for cooling the soldered target workpiece (20) after the soldering operation of the soldering module (100) is completed.

2. The automatic soldering device (10) according to claim 1, characterized in that, The automatic soldering device (10) further includes: A motion module (400) for transporting the target workpiece (20) to move on a processing path, and a soldering station (410) and a cooling station (420) are sequentially arranged on the processing path; The soldering module (100) and the air jet module (200) are arranged corresponding to the position of the soldering station (410), and the cooling module (300) is arranged corresponding to the position of the cooling station (420).

3. The automatic soldering device (10) according to claim 2, characterized in that, The cooling station (420), the soldering station (410) and the cooling station (420) are sequentially arranged on the processing path. The number of the cooling modules (300) is two, and the cooling modules (300) are arranged corresponding to the positions of the cooling stations (420) one by one; The motion module (400) is used to transport the target workpiece (20) to move bidirectionally on the processing path.

4. The automatic soldering device (10) according to claim 2, wherein, The automatic soldering device (10) further includes a cleaning module, and the cleaning module is arranged corresponding to the position of the cooling station (420); The cleaning module is used to remove impurities on the target workpiece (20) after the cooling module (300) completes the cooling work.

5. The automatic soldering device (10) according to claim 2, characterized in that, A transition station (430) is further included between the soldering station (410) and the cooling station (420) on the processing path; The automatic soldering device (10) further includes a transition protection module (500), and the transition protection module (500) is arranged corresponding to the position of the transition station (430). The transition protection module (500) is used to jet a protective gas to provide anti-oxidation protection when the target workpiece (20) moves between the soldering station (410) and the cooling station (420).

6. The automatic soldering device (10) according to claim 1, characterized in that, The automatic soldering device (10) further includes a mounting table, and the soldering module (100), the air jet module (200) and the cooling module (300) are respectively arranged on the mounting table.

7. The automatic soldering device (10) according to claim 6, characterized in that, The automatic soldering device (10) further includes: A cleaning module (600) for removing impurities on the target workpiece (20); A motion module (400) for transporting the target workpiece (20) to move on a processing path, and a soldering station (410) and a cleaning station (440) are sequentially arranged on the processing path; The brazing module (100), the jetting module (200), and the cooling module (300) are arranged corresponding to the position of the welding station (410), and the cleaning module (600) is arranged corresponding to the position of the cleaning station (440).

8. The automatic soldering device (10) according to any one of claims 1 to 7, characterized in that, The brazing module (100) includes a first burner row (110) and a second burner row (120). The target workpiece (20) is disposed between the first burner row (110) and the second burner row (120), and the first burner row (110) and the second burner row (120) are used to heat the target workpiece (20) respectively.

9. The automatic soldering device (10) according to claim 8, characterized in that, The brazing module (100) further includes a first driving mechanism and a second driving mechanism. The first driving mechanism is drivingly connected to the first burner row (110), and the second driving mechanism is drivingly connected to the second burner row (120); The first driving mechanism and the second driving mechanism are used to drive the first burner row (110) and the second burner row (120) to reciprocate in a first direction respectively.

10. The automatic soldering device (10) according to claim 8, characterized in that, The brazing module (100) further includes a control mechanism, a first gas flowmeter, and a second gas flowmeter. The first gas flowmeter is used to collect the gas flow output by the first burner row (110), and the second gas flowmeter is used to collect the gas flow output by the second burner row (120); The control mechanism is used to control the gas spraying amount of the first burner row (110) according to the gas flow collected by the first gas flowmeter, and control the gas spraying amount of the second burner row (120) according to the gas flow collected by the second gas flowmeter.

11. The automatic soldering device (10) according to any one of claims 1 to 7, characterized in that, The jetting module (200) includes a first jetting assembly (210) and a second jetting assembly (220). The target workpiece (20) is disposed between the first jetting assembly (210) and the second jetting assembly (220), and the first jetting assembly (210) and the second jetting assembly (220) are used to jet protective gases to cover both sides of the target workpiece (20) respectively.

12. The automatic soldering device (10) according to claim 11, characterized in that, The jetting module (200) further includes a control mechanism, a third gas flowmeter, and a fourth gas flowmeter. The third gas flowmeter is used to collect the flow of the protective gas output by the first jetting assembly (210), and the fourth gas flowmeter is used to collect the flow of the protective gas output by the second jetting assembly (220); The control mechanism is used to control the gas jetting amount of the first jetting assembly (210) according to the gas flow collected by the third gas flowmeter, and control the gas jetting amount of the second jetting assembly (220) according to the gas flow collected by the fourth gas flowmeter.

13. The automatic soldering device (10) according to claim 11, characterized in that, Both the first jetting assembly (210) and the second jetting assembly (220) include a plurality of first nozzles (230), and each of the first nozzles (230) is provided with a plurality of air outlet holes for outputting the protective gas.

14. The automatic soldering device (10) according to any one of claims 1 to 7, characterized in that, The cooling module (300) includes a first cooling component (310) and a second cooling component (320). The target workpiece (20) is disposed between the first cooling component (310) and the second cooling component (320). The first cooling component (310) and the second cooling component (320) are configured to cool the brazed target workpiece (20) after the brazing operation of the brazing module (100) is completed.

15. The automatic soldering device (10) according to claim 14, characterized in that, Both the first cooling component (310) and the second cooling component (320) include a plurality of second nozzles (330). The second nozzles (330) are provided with a plurality of liquid outlet holes, and the plurality of liquid outlet holes are configured to eject a cooling liquid to cool the brazed target workpiece (20).

16. The automatic soldering device (10) according to any one of claims 1 to 7, characterized in that, The automatic brazing device (10) further includes a water tank module (700). The target workpiece (20) is disposed within the water tank module (700), and the water tank module (700) is configured to hold the water ejected by the cooling module (300).

17. A brazing system, characterized in that, The brazing system includes the automatic brazing device (10) according to any one of claims 1 to 16.

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