Hydraulic oil tank welding equipment with path automatic planning function

Abstract

The invention relates to the technical field of welding equipment, in particular to hydraulic oil tank welding equipment with an automatic path planning function, which comprises a base, a sliding frame, a welding arm, a positioning module and an intelligent control unit. The distance between the welding arms is adjusted through a driving motor, and different welding requirements are met; the telescopic rod is matched with the pressing block to achieve the air channel blocking and slag removing functions, and the blocking treatment efficiency is improved; a three-dimensional welding network is formed through the double-movement design of the sliding frame and the base, and path planning is optimized. According to the application, the welding path can be dynamically adjusted, blockage can be automatically cleaned, gas is supplied in a partitioned manner to save energy, intelligent control is combined, the problems of insufficient path planning, frequent blockage, high energy consumption and dependence on manpower of traditional equipment are solved, and the welding efficiency and quality are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of welding automation technology, specifically a welding device for hydraulic oil tanks with automatic path planning. Background Technology

[0002] As a crucial component in mechanical equipment, the automation and intelligence level of the welding process for hydraulic oil tanks directly impacts production efficiency and product quality. However, existing hydraulic oil tank welding equipment still has certain shortcomings in path planning, automation level, and adaptability, making it difficult to meet the demands of modern industry for efficient and precise welding.

[0003] A search revealed a hydraulic oil tank welding positioning fixture with publication number CN115246051B, published on December 29, 2023. This patent provides a positioning fixture for welding hydraulic oil tanks, capable of positioning tank panels of different sizes and featuring exhaust gas filtration and purification functions. However, this technical solution primarily relies on manual operation for setting the welding path, lacking automatic path planning capabilities, resulting in low welding efficiency and insufficient adaptability to hydraulic oil tanks with complex shapes. Furthermore, while the exhaust gas treatment system can purify the dust generated during welding, it is not integrated with welding path optimization, potentially affecting the overall welding quality.

[0004] A search revealed a patent, CN119973514B, which discloses a positioning and welding device for processing steel components of a bending machine and its usage method, published on September 19, 2025. This patent achieves automatic positioning of steel plates and flanges through a centering and adjusting mechanism, significantly improving positioning accuracy and welding quality. However, this technical solution primarily addresses welding scenarios involving steel plates and flanges, and does not address the welding needs of complex structures like hydraulic tanks. Furthermore, the device lacks intelligent path planning functionality, failing to dynamically adjust the welding path according to the specific shape of the hydraulic tank and welding requirements, potentially leading to incomplete or repeated welding during the process.

[0005] The aforementioned problems indicate that existing hydraulic tank welding equipment still has certain shortcomings in terms of automated path planning, adaptability to complex structures, and welding efficiency. Therefore, this invention provides a hydraulic tank welding equipment with automatic path planning, aiming to improve welding efficiency and accuracy through intelligent path planning algorithms and adaptive welding technology, thereby meeting the modern industrial demand for efficient and intelligent hydraulic tank welding equipment. Summary of the Invention

[0006] The present invention addresses the problem of providing a welding device for hydraulic tanks with automatic path planning, overcoming the shortcomings of existing hydraulic tank welding equipment in terms of path planning, automation level, and adaptability to complex structures. Existing welding equipment relies on manual setting of welding paths, lacking intelligent path planning capabilities, resulting in low welding efficiency and insufficient adaptability to complex-shaped hydraulic tanks. Furthermore, the lack of integration between the exhaust gas treatment system and welding path optimization may affect the overall welding quality. Simultaneously, while existing technologies primarily address welding scenarios for steel plates and flanges, they do not address the welding needs of complex hydraulic tank structures and lack the function of dynamically adjusting the welding path, potentially leading to incomplete welds or repeated welds.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A welding device for hydraulic oil tanks with automatic path planning includes a base, a sliding frame, welding arms, a positioning module, and an intelligent control unit. The sliding frame, which slides along a guide rail, is mounted on the top of the base, with the guide rail located on both sides of the welding platform. Support columns are mounted on both sides of the bottom of the base, and the support columns are fixedly connected to the base by several reinforcing ribs. A linear guide rail is provided on the sliding frame, and several welding arms are slidably mounted on the linear guide rail. Welding heads are mounted on the bottom of each welding arm. An air supply module is mounted on the base, and flexible air pipes connect adjacent welding arms and between the welding arms and the air supply module. The air supply module is connected to an air source through a main air pipe. A slag removal mechanism is mounted on each welding arm.

[0008] The welding arm has a cavity, and air passages are provided on both sides of the cavity, which are connected to flexible air tubes.

[0009] The slag removal mechanism includes a sleeve installed at the top of the welding arm, a sealing block installed in the sleeve and cavity, the inner diameter of the sleeve being the same as the diameter of the cavity, a sealing ring being provided on the outside of the sealing block, and an elastic element being installed at the bottom of the sealing block and inside the cavity.

[0010] The sleeve has a first vent hole, which is connected to the vent pipe via an interface. The vent pipe is connected to the auxiliary air pipe. The bottom of the sealing block has an air groove, and the side wall of the sealing block has a second vent hole that communicates with the air groove.

[0011] An airway support is installed on the base, and an auxiliary airway is connected to the airway support. The airway support is connected to the air pump through a secondary airway.

[0012] The welding arm is equipped with several rollers that are adapted to the linear guide rail. A drive motor is installed inside the welding arm, and the output end of the drive motor is connected to one of the rollers.

[0013] An adjustment motor is installed at the end of the sliding frame, and a guide groove is provided on the sliding frame. A lead screw is installed at the output end of the adjustment motor in the guide groove.

[0014] The lead screw is threadedly connected to the slider, and a fixed seat is installed on the slider. A telescopic rod is installed on the fixed seat, and a pressure block is installed through the telescopic end of the telescopic rod through the fixed seat.

[0015] A working method for a welding equipment for hydraulic oil tanks with automatic path planning, the specific operation steps of which are as follows: Step 1: Drive the rollers to rotate by the drive motor, which in turn moves the welding arms on the sliding frame. Adjust the spacing of the welding arms according to the welding position and distribution of the hydraulic oil tank to adjust the spacing of the welding heads. During the adjustment process, the welding arms are kept connected by flexible air pipes. Step 2: Gas source operation. Gas is delivered through the main gas pipe and gas supply module to the flexible gas pipe, and then sequentially delivered through the flexible gas pipe to the cavity of the welding arm. It is then ejected through the welding head and moves along the welding platform guide rail via the sliding frame, realizing the overall movement of the equipment. Step 3: By adjusting the motor to drive the lead screw to rotate, the threaded slider moves along the sliding frame. After the initial adjustment of the welding arm spacing, when the welding arm spacing is too large, the excess welding arms at the end of the sliding frame are idle. The slider moves to the first idle welding arm, and the telescopic rod moves the pressure block down to contact the sealing block. The sealing block moves down in the sleeve and cavity until it blocks the air passage, completing the sealing of the welding head and the air passage. When the welding head is blocked, the sealing block moves down to the second exhaust hole, which corresponds to the first exhaust hole. At this time, the auxiliary air pipe is connected to the cavity. The air pump is connected to the corresponding cavity through the auxiliary air pipe, air pipe support, and auxiliary air pipe. The air pump works in the cavity to generate pulse negative pressure, which draws the impurities blocking the welding head into the cavity. They enter the air pump through the auxiliary air pipe, air pipe support, and auxiliary air pipe, and are filtered and discharged through the filter set on the air pump. When the pressure block moves up, the compressed elastic element moves the sealing block up to return to its original state. At this time, the air passage and the cavity are connected again.

[0016] The beneficial effects of this invention are: by adopting a linear guide rail and welding arm design, and by driving the rollers through a drive motor, the welding head spacing can be flexibly adjusted to adapt to the welding requirements of different hydraulic oil tanks. The sliding frame and base have a dual-movement design, which can move horizontally along the welding platform guide rail. At the same time, the welding head on the sliding frame can be longitudinally positioned to form a three-dimensional precision welding network. The telescopic rod controls the pressure block to press down the sealing block, thereby blocking the air passage and connecting the exhaust passage. It automatically starts the slag removal process without the need for machine shutdown. The air pump generates negative pressure to draw the blockage from the welding head into the cavity and discharge it through the exhaust pipe, thus automatically completing the blockage and greatly improving the slag removal efficiency. The lead screw rotates, which in turn drives the threaded slider to move along the sliding frame to the idle welding arm. The pressure block presses down to close the gas passage, cutting off the gas supply to the welding head and activating only the welding head that needs to be worked, thus reducing the energy consumption of the gas source. Through four core innovations—dynamic adjustment, self-cleaning, energy-saving zoning, and intelligent control—it solves the pain points of traditional hydraulic tank welding equipment, such as insufficient path planning, frequent blockages, high energy consumption, and reliance on manual labor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the outer structure of the telescopic rod of the present invention.

[0019] Figure 3 This is a schematic diagram of the outer structure of the slag removal mechanism of the present invention.

[0020] Figure 4 This is a schematic diagram of the outer structure of the gas supply module of the present invention.

[0021] The attached diagram is labeled as follows: 1. Base; 2. Sliding frame; 3. Welding arm; 4. Welding head; 5. Air supply module; 6. Flexible air tube; 7. Slag removal mechanism; 8. Cavity; 9. Air passage; 10. Sleeve; 11. Sealing block; 12. Elastic element; 13. First exhaust port; 14. Second exhaust port; 15. Auxiliary air tube; 16. Air tube support; 17. Secondary air tube; 18. Roller; 19. Drive motor; 20. Adjusting motor; 21. Lead screw; 22. Slider; 23. Fixed seat; 24. Telescopic rod; 25. Pressure block. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Specific implementation examples are given below.

[0024] This invention provides a welding device for hydraulic oil tanks with automatic path planning, the structure of which is as follows: Figures 1 to 4As shown. The base 1 serves as the fundamental support component of the entire equipment. A sliding frame 2 is mounted on its top, and the sliding frame 2 is connected to the base 1 via guide rails located on both sides of the welding platform. Support columns are installed on both sides of the bottom of the base 1, and the support columns are fixedly connected to the base 1 by several reinforcing ribs to enhance overall stability. A linear guide rail is installed on the sliding frame 2, and several welding arms 3 are slidably mounted on the linear guide rail. Welding heads 4 are installed on the bottom side of the welding arms 3, and the welding heads 4 are used for welding the hydraulic oil tank. An air supply module 5 is also installed on the base 1. The air supply module 5 is connected to the air source through a main air pipe. Adjacent welding arms 3 and welding arms 3 are connected to the air supply module 5 through flexible air pipes 6. The design of the flexible air pipes 6 ensures that the gas supply to the welding arms 3 remains continuous during movement. A slag removal mechanism 7 is also installed on the welding arms 3, which is used to clean blockages in the welding heads 4.

[0025] The welding arm 3 has an internal cavity 8, with air passages 9 on both sides of the cavity 8. The air passages 9 are connected to the flexible air pipe 6, thereby enabling the delivery of gas from the gas supply module 5 to the welding head 4. The slag removal mechanism 7 includes a sleeve 10 installed on the top of the welding arm 3. A sealing block 11 is installed inside the sleeve 10 and the cavity 8. The inner diameter of the sleeve 10 is the same as the diameter of the cavity 8. A sealing ring is provided on the outer side of the sealing block 11 to ensure a sealing effect. An elastic element 12, which is a compression spring, is installed at the bottom of the sealing block 11 and inside the cavity 8. The elastic element 12 can return to its original shape after the sealing block 11 is pushed down by force. A first exhaust hole 13 is provided on the sleeve 10. The first exhaust hole 13 is connected to an exhaust pipe through an interface. The exhaust pipe is connected to an auxiliary air pipe 15. An air groove is provided at the bottom of the sealing block 11, and a second exhaust hole 14 communicating with the air groove is provided on the side wall of the sealing block 11. An air tube support 16 is installed on the base 1. An auxiliary air tube 15 is connected to the air tube support 16. The air tube support 16 is connected to the air pump through a secondary air tube 17. The air pump is used to generate negative pressure to clear blockages in the welding head 4.

[0026] The welding arm 3 is equipped with several rollers 18 that are adapted to the linear guide rail. A drive motor 19 is installed inside the welding arm 3. The output end of the drive motor 19 is connected to one of the rollers 18. When the drive motor 19 is working, it drives the roller 18 to rotate, thereby realizing the movement of the welding arm 3 on the sliding frame 2. An adjustment motor 20 is installed at the end of the sliding frame 2. A guide groove is opened on the sliding frame 2. A lead screw 21 is installed in the guide groove at the output end of the adjustment motor 20. The lead screw 21 is threadedly connected to the slider 22. A fixed seat 23 is installed on the slider 22. A telescopic rod 24 is installed on the fixed seat 23. The telescopic end of the telescopic rod 24 passes through the fixed seat 23 and is equipped with a pressure block 25. The pressure block 25 is used to apply pressure to the sealing block 11 to realize the function of sealing or venting the air passage 9.

[0027] The working process of the welding equipment is as follows: First, the drive motor 19 drives the roller 18 to rotate, which in turn moves the welding arm 3 on the sliding frame 2. The spacing between the welding arms 3 is adjusted according to the welding position and distribution of the hydraulic oil tank, thereby achieving flexible adjustment of the spacing between the welding heads 4. During the adjustment process, the flexible air pipe 6 ensures gas communication between the welding arms 3. The gas source delivers gas through the main air pipe to the air supply module 5, and then from the air supply module 5 to the flexible air pipe 6. The flexible air pipe 6 delivers the gas sequentially to the cavity 8 of the welding arm 3, and finally ejects it through the welding head 4. At the same time, the sliding frame 2 moves horizontally along the welding platform guide rail to form a three-dimensional welding network. When an idle welding arm 3 needs to be processed, the adjusting motor 20 drives the lead screw 21 to rotate. The lead screw 21 drives the slider 22 to move along the sliding frame 2 to the first idle welding arm 3. The telescopic rod 24 drives the pressure block 25 to move down and contact the sealing block 11. The sealing block 11 moves down in the sleeve 10 and cavity 8 until it blocks the air passage 9, completing the sealing of the welding head 4 and the air passage 9. If the welding head 4 is blocked, the sealing block 11 moves down to the position corresponding to the second exhaust port 14 and the first exhaust port 13. At this time, the auxiliary air pipe 15 is connected to the cavity 8. The air pump generates pulsed negative pressure in the cavity 8 through the auxiliary air pipe 17, the air pipe support 16 and the auxiliary air pipe 15, sucking the blockage from the welding head 4 into the cavity 8, and then through the auxiliary air pipe 15, the air pipe support 16 and the auxiliary air pipe 17 into the air pump and discharged through the filter. When the pressure block 25 moves upward, the compressed elastic element 12 drives the sealing block 11 to move upward and return to its original state, and the air passage 9 and the cavity 8 are reconnected.

[0028] In practical applications, this welding equipment is suitable for welding complex-shaped hydraulic tanks. For example, when welding a hydraulic tank with multiple flange connection points, the welding arm 3 can flexibly adjust its spacing according to the flange distribution to ensure that each flange connection point can be accurately welded. While the sliding frame 2 moves horizontally along the guide rail, the welding arm 3 is longitudinally positioned by the drive motor 19, thereby forming a three-dimensional welding network to meet the welding requirements of complex structures. In addition, when a welding head 4 is blocked by impurities, the slag removal mechanism 7 can automatically start the cleaning process without stopping the machine, thus improving welding efficiency. For idle welding arms 3, the pressure block 25 presses down the sealing block 11 to block the air passage 9, cutting off the gas supply to the welding head 4 and activating only the welding head 4 that needs to be worked, thereby reducing the energy consumption of the air source.

[0029] The gas path of this welding equipment consists of a main gas pipe that delivers gas from the gas source to the gas supply module 5. The gas supply module 5 then distributes the gas to the cavities 8 of each welding arm 3 via flexible gas pipes 6. The gas in the cavities 8 is then delivered to the welding head 4 via gas channels 9 and ejected. When the welding head 4 becomes blocked, the auxiliary gas pipe 15 connects to the cavity 8, and the air pump generates negative pressure in the cavity 8 through the secondary gas pipe 17 and the gas pipe support 16, drawing the blockage into the cavity 8 and expelling it through the exhaust pipe. The rational design of the gas path system ensures smooth gas flow and also enables the automatic cleaning function of the welding head 4.

[0030] The movement and spacing adjustment of the welding arms 3 are achieved through the drive motor 19, which drives the rollers 18 to rotate. The rollers 18 roll along the linear guide rail, thereby moving the welding arms 3 on the sliding frame 2. The spacing between the welding arms 3 can be dynamically adjusted according to the specific welding requirements of the hydraulic oil tank. The design of the flexible air pipe 6 ensures the continuity of gas supply during the movement of the welding arms 3. The movement of the sliding frame 2 is achieved through the guide rail on the base 1. The sliding frame 2 moves horizontally along the guide rail, thereby driving the welding arms 3 to move as a whole, forming a three-dimensional welding network.

[0031] The adjusting motor 20 drives the slider 22 to move via the lead screw 21. A telescopic rod 24 is installed on the fixed seat 23 of the slider 22. A pressure block 25 is installed on the telescopic end of the telescopic rod 24, which is used to apply pressure to the sealing block 11. When the welding arm 3 is idle, the slider 22 moves to the welding arm 3, and the telescopic rod 24 drives the pressure block 25 to move down and contact the sealing block 11. The sealing block 11 moves down in the sleeve 10 and the cavity 8 until it blocks the air passage 9, thereby cutting off the gas supply to the welding head 4. When the welding head 4 is blocked, the sealing block 11 moves down to the position corresponding to the second exhaust port 14 and the first exhaust port 13. The auxiliary air pipe 15 is connected to the cavity 8. The air pump generates negative pressure in the cavity 8 through the auxiliary air pipe 17, the air pipe support 16 and the auxiliary air pipe 15, which draws the blockage from the welding head 4 into the cavity 8 and discharges it through the exhaust pipe. When the pressure block 25 moves upward, the elastic element 12 drives the sealing block 11 to move upward and return to its original state, and the air passage 9 and the cavity 8 are reconnected.

[0032] This welding equipment achieves three-dimensional positioning of the welding head 4 through a dual-movement design of the sliding frame 2 and the base 1. The spacing adjustment and movement of the welding arms 3 are achieved via the drive motor 19. The automatic cleaning function of the welding head 4 is achieved through the slag removal mechanism 7. The gas supply to the idle welding arm 3 is cut off by applying pressure to the sealing block 11 via the pressure block 25. These designs collectively solve the problems of insufficient path planning, frequent blockages, high energy consumption, and reliance on manual labor in traditional hydraulic tank welding equipment, thereby improving welding efficiency and welding quality. To better enable those skilled in the art to fully understand and implement this invention, the specific implementation principle of the invention is further explained below in conjunction with a specific application scenario.

[0033] When welding complex hydraulic tanks with multiple flange connection points, the hydraulic tank to be welded is first placed on the welding platform and fixed by a positioning module. At this time, the sliding frame 2 moves horizontally along the guide rail on the base 1 to its initial position. The welding arm 3 is driven by the drive motor 19 to rotate the roller 18, thereby adjusting longitudinally along the linear guide rail on the sliding frame 2. Depending on the specific distribution of the hydraulic tank flanges, the spacing between the welding arms 3 can be dynamically adjusted by the drive motor 19. The design of the flexible air pipe 6 ensures the continuity of gas supply during the movement of the welding arms 3, avoiding gas interruption due to changes in spacing.

[0034] Once the welding arm 3 is adjusted to the appropriate position, the gas supply module 5 obtains gas from the gas source through the main gas pipe and delivers the gas to the cavity 8 of the welding arm 3 through the flexible gas pipe 6. The gas in the cavity 8 is then delivered to the welding head 4 through the gas channel 9 and finally ejected to complete the welding operation. During this process, the sliding frame 2 moves horizontally along the welding platform guide rail, while the welding arm 3 is longitudinally positioned by the drive motor 19, forming a three-dimensional welding network to ensure that each flange connection point can be accurately welded.

[0035] If a welding head 4 malfunctions due to blockage by impurities, the regulating motor 20 starts, rotating the lead screw 21. This causes the slider 22 to move along the sliding frame 2 to the blocked welding arm 3. The telescopic rod 24 pushes the pressure block 25 downward, contacting and applying pressure to the sealing block 11, causing the sealing block 11 to move downward within the sleeve 10 and cavity 8. When it moves to the position corresponding to the second exhaust port 14 and the first exhaust port 13, the auxiliary air pipe 15 connects to the cavity 8. At this time, the air pump generates pulsed negative pressure into the cavity 8 through the auxiliary air pipe 17, air pipe support 16, and auxiliary air pipe 15, drawing the blockage from the welding head 4 into the cavity 8. The blockage then passes through the auxiliary air pipe 15, air pipe support 16, and auxiliary air pipe 17 into the air pump, and is finally filtered and discharged. After cleaning, the pressure block 25 moves upward, the elastic element 12 pushes the sealing block 11 back to its original position, the air passage 9 reconnects with the cavity 8, and the welding head 4 returns to normal operation.

[0036] For the idle welding arm 3, the adjusting motor 20 also drives the slider 22 to move to the welding arm 3 via the lead screw 21. The telescopic rod 24 pushes the pressure block 25 down, making it contact the sealing block 11 and applying pressure, causing the sealing block 11 to move down until it blocks the air passage 9. This operation cuts off the gas supply to the welding head 4, leaving only the welding head 4 that needs to be worked in the working state, thereby reducing the energy consumption of the gas source.

[0037] In practical applications, the above process is automated through an intelligent control unit. The intelligent control unit dynamically plans the welding path based on the specific shape of the hydraulic tank and welding requirements, and adjusts the spacing and position of the welding arms 3 in real time. For example, when welding a hydraulic tank with irregularly distributed flanges, the intelligent control unit can generate the optimal welding path based on the actual position of the flanges, avoiding missed welds or repeated welding. Simultaneously, the automatic cleaning function of the slag removal mechanism 7 ensures that no machine stoppage is required during welding, significantly improving welding efficiency.

[0038] Furthermore, the design of the gas path system further enhances the reliability of the equipment. The main gas pipe delivers gas from the gas source to the gas supply module 5, which then distributes the gas to the cavities 8 of each welding arm 3 via flexible gas pipes 6. When the welding head 4 becomes blocked, the auxiliary gas pipe 15 connects to the cavity 8, and the air pump generates negative pressure in the cavity 8 through the secondary gas pipe 17 and the gas pipe support 16, drawing the blockage into the cavity 8 and expelling it through the exhaust pipe. This design not only ensures smooth gas flow but also enables automatic cleaning of the welding head 4.

[0039] In summary, this invention achieves three-dimensional positioning of the welding head 4 through the dual-movement design of the sliding frame 2 and the base 1. The spacing adjustment and movement of the welding arms 3 are achieved through the drive motor 19. The automatic cleaning function of the welding head 4 is achieved through the slag removal mechanism 7. The gas supply to the idle welding arm 3 is cut off by applying pressure to the sealing block 11 by the pressure block 25. These designs collectively solve the problems of insufficient path planning, frequent blockages, high energy consumption, and reliance on manual labor in traditional hydraulic tank welding equipment, significantly improving welding efficiency and welding quality.

[0040] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are prior art, and will not be described further here.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding device for hydraulic oil tanks with automatic path planning, characterized in that, The system includes a base (1), a sliding frame (2), welding arms (3), welding heads (4), an air supply module (5), a flexible air pipe (6), a slag removal mechanism (7), an adjusting motor (20), a lead screw (21), a slider (22), a fixed seat (23), a telescopic rod (24), and a pressure block (25). The base (1) is equipped with a sliding frame (2) that slides along a guide rail, and the guide rail is located on both sides of the welding platform. Support columns are installed on both sides of the bottom of the base (1), and the support columns are fixedly connected to the base (1) by several reinforcing ribs. A linear guide rail is provided on the sliding frame (2), and several welding arms (3) are slidably installed on the linear guide rail. Welding heads (4) are installed on the bottom side of the welding arms (3). The base (1) is equipped with a sliding frame (2), a welding arm (3), a welding head (4), a welding head (5), a welding head (6), a welding head (7), a welding head (8), a welding head (9), a welding head (10), a welding head (11), a welding head (22), a welding head (3), a welding head (4), a welding head (5), a welding head (6), a welding head (7), a welding head (8), a welding head (9), a welding head (11), a welding head (22), a welding head (3), a welding head (4 ... A gas supply module (5) is installed on the welding arm (3). Flexible gas pipes (6) are connected between the adjacent welding arm (3) and the gas supply module (5). The gas supply module (5) is connected to the gas source through the main gas pipe. A slag removal mechanism (7) is installed on the welding arm (3). An adjustment motor (20) is installed at the end of the sliding frame (2). A guide groove is opened on the sliding frame (2). A lead screw (21) is installed in the guide groove at the output end of the adjustment motor (20). The lead screw (21) is threadedly connected to the slider (22). A fixed seat (23) is installed on the slider (22). A telescopic rod (24) is installed on the fixed seat (23). A pressure block (25) is installed through the telescopic end of the telescopic rod (24) through the fixed seat (23).

2. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 1, characterized in that, The welding arm (3) has a cavity (8) inside, and air passages (9) are provided on both sides of the cavity (8), and the air passages (9) are connected to the flexible air tube (6).

3. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 2, characterized in that, The slag removal mechanism (7) includes a sleeve (10) installed on the top of the welding arm (3), a sealing block (11) installed in the sleeve (10) and the cavity (8), the inner diameter of the sleeve (10) is the same as the diameter of the cavity (8), a sealing ring is provided on the outside of the sealing block (11), and an elastic element (12) is installed at the bottom of the sealing block (11) and inside the cavity (8).

4. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 3, characterized in that, The sleeve (10) is provided with a first exhaust hole (13), and the first exhaust hole (13) is connected to the exhaust pipe through an interface. The exhaust pipe is connected to the auxiliary air pipe (15). The bottom of the sealing block (11) is provided with an air groove, and the side wall of the sealing block (11) is provided with a second exhaust hole (14) that communicates with the air groove.

5. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 4, characterized in that, An airway support (16) is installed on the base (1), the auxiliary airway (15) is connected to the airway support (16), and the airway support (16) is connected to the air pump through the auxiliary airway (17).

6. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 1, characterized in that, The welding arm (3) is equipped with several rollers (18) that are adapted to the linear guide rail. The welding arm (3) is equipped with a drive motor (19), and the output end of the drive motor (19) is connected to one of the rollers (18).

7. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 1, characterized in that, The elastic element (12) is a compression spring.

8. The welding equipment for hydraulic oil tanks with automatic path planning according to claim 1, characterized in that, The spacing between the welding arms (3) is adjusted by driving the rollers (18) along the linear guide rail by the drive motor (19). The flexible gas pipe (6) ensures the continuity of gas supply during the movement of the welding arms (3).

9. The working method of a welding equipment for hydraulic oil tanks with automatic path planning according to claim 1, characterized in that, The specific operation steps of this working method are as follows: Step 1: Drive the roller (18) to rotate by the drive motor (19), thereby driving the welding arm (3) to move on the sliding frame (2). Adjust the spacing of the welding arms (3) according to the welding position and distribution of the hydraulic oil tank. During the adjustment process, ensure the mutual connection between the welding arms (3) through the flexible air pipe (6); Step 2: The air source works to deliver the gas through the main air pipe and the air supply module (5) to the flexible air pipe (6), and then deliver it to the welding arm (3) in sequence through the flexible air pipe (6). In the cavity (8), the welding head (4) sprays out and moves along the welding platform guide rail through the sliding frame (2) to realize the overall movement of the equipment; Step 3: By adjusting the operation of the motor (20) to drive the lead screw (21) to rotate, and then drive the threaded slider (22) to move along the sliding frame (2). After the initial adjustment of the welding arm (3) spacing, when the welding arm (3) spacing is too large, the excess welding arm (3) at the end of the sliding frame (2) is in an idle state. At this time, the slider (22) moves to the first one in an idle state. In the idle state of the welding arm (3), the pressure block (25) is moved down by the telescopic rod (24) to contact the sealing block (11). At this time, the sealing block (11) moves down in the sleeve (10) and the cavity (8) until the air passage (9) is blocked, thus completing the sealing of the welding head (4) and the air passage (9). When the welding head (4) is blocked, the sealing block (11) moves down to the second exhaust hole (14) to correspond with the first exhaust hole (13). At this time, the auxiliary air pipe (15) is connected to the cavity (8), and the air pump passes through the auxiliary air pipe (17). The tracheal stent (16) and auxiliary tracheal tube (15) are connected to the corresponding cavity (8). The air pump works in the cavity (8) to generate pulse negative pressure, which in turn draws the impurities blocking the welding head (4) into the cavity (8). The impurities enter the air pump through the auxiliary tracheal tube (15), tracheal stent (16) and auxiliary tracheal tube (17), and are filtered and discharged through the filter set on the air pump. When the pressure block (25) moves up, the compressed elastic element (12) drives the sealing block (11) to move up and return to its original state. At this time, the airway (9) and the cavity (8) are connected again.

10. The working method of a welding equipment for hydraulic oil tanks with automatic path planning according to claim 9, characterized in that, The sliding frame (2) moves horizontally along the guide rail of the welding platform to form a three-dimensional welding network.

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