Stirring machine impeller welding machining device and welding machining method thereof

Abstract

A stirring machine impeller welding machining device comprises a main body frame with a base, a welding table arranged at one end of the base, a main control screen arranged at one end of the main body frame, a first linear module arranged at the top end of the main body frame and a positioning telescopic arm mechanically connected with the first linear module. The abutting arm is arranged on one side of the main body frame and provided with a second linear module, the welding piece is arranged at the other end of the welding table, and the monitoring camera is arranged on one side of the main body frame; according to the automatic welding device, the abutting arm and the positioning telescopic arm are matched with each other to complete welding of a to-be-welded part and the impeller, and meanwhile, a master console automatically judges whether welding dislocation is generated between the to-be-welded part and the impeller and the reason for deviation of the welding position in combination with the numerical value of pressure borne by an electric telescopic rod and the vibration frequency generated in the welding process; in addition, the invention further provides a related welding machining method.

Description

Technical Field

[0001] The invention relates to the field of industrial equipment, and in particular to a welding processing device and a welding processing method for an impeller of a mixer. Background Art

[0002] As the core component for mixing and stirring materials, the impeller of a mixer plays a vital role in many industrial fields such as chemical, food, pharmaceutical and building materials. Its structural complexity and performance requirements are directly related to the mixing efficiency, material uniformity, equipment durability and maintenance costs. Although the traditional welding processing device of a mixer impeller meets the basic manufacturing needs to a certain extent, it has significant limitations in functionality, user-friendliness and production efficiency. These drawbacks restrict its wide application and optimization and upgrading in modern industrial environments.

[0003] Most of the existing welding processing devices for mixer impellers use a relatively single welding mode, usually relying on manual or semi-automatic welding equipment. Such equipment can only perform a single welding task, such as spot welding, continuous welding or seam welding, and lacks flexible adaptability and automated processing capabilities for different welding requirements. Single-function welding devices often ignore the pre-processing and post-processing links before and after welding, which are crucial to ensuring welding quality and impeller performance. However, traditional equipment usually lacks an integrated processing module and needs to rely on additional processes and equipment to complete, further increasing production costs and complexity, and failing to meet the market's demand for diversified, efficient, and low-cost processing; the complexity of operation and the inconvenience of troubleshooting increase the user's difficulty of use and maintenance costs.

[0004] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0005] The object of the present invention is to provide a mixer impeller welding processing device which can effectively solve the above-mentioned technical problems.

[0006] In order to achieve the purpose of the present invention, the following technical scheme is adopted:

[0007] A welding processing device for a mixer impeller, characterized in that:

[0008] It includes a main frame with a base,

[0009] The welding table is located at one end of the base.

[0010] The workbench is located at the other end of the base.

[0011] The main control screen is located on one side of the body frame.

[0012] The first linear module is located at the top of the main frame.

[0013] The positioning telescopic arm is mechanically connected to the first linear module,

[0014] An abutment arm provided on one side of the main frame and having a second linear module,

[0015] The welding parts are located at the other end of the welding table.

[0016] A surveillance camera is installed on one side of the main frame;

[0017] The welding table is used to place the shell to be welded, the workbench is used to place the impeller, the workbench is provided with a curved plate, the monitoring camera is used to monitor the connection position between the impeller and the shell to be welded, the first linear module is used to control the movement of the positioning telescopic arm, the positioning telescopic arm is used to stabilize the position of the impeller, and the second linear module is used to control the movement of the abutment arm, the abutment arm is used to abut against one end of the impeller and cooperate with the positioning telescopic arm to position the welding position of the impeller and the shell to be welded, and the welding part is used to weld the gap between the impeller and the shell to be welded.

[0018] Furthermore, an assembly cavity with a negative pressure generating device is provided in the base, a ventilation pipe is provided at one end cover of the negative pressure generating device, a hose for communicating with the interior of the ventilation pipe is provided inside the positioning telescopic arm, an adsorption port for communicating with the hose is provided at one end of the positioning telescopic arm, a rubber ring is provided on the adsorption port, and an electric valve is provided between the tee and the hose.

[0019] Furthermore, a sub-cavity with a rotating motor is provided in the inner cavity at one end of the base, one end of the rotating motor is plugged into the welding table, and the rotating motor is connected to the main control panel by wires, so that the main control panel drives the welding table to rotate through the rotating motor.

[0020] Furthermore, the welding table is provided with an air port, one end of which is plugged with an air inlet pipe for plugging with the other end of the tee.

[0021] Furthermore, an installation chamber is provided in the inner cavity at the other end of the base, and an electric telescopic rod with a pressure sensor is provided in the installation chamber, and there are two electric telescopic rods in total.

[0022] Furthermore, the base is provided with an opening for the electric telescopic rod to pass through, and the pressure sensor is connected to the main control screen by electrical wires.

[0023] Furthermore, a telescopic motor for connecting to the main control panel wire is provided at one end of the abutment arm, and an abutment plate connected to the main control panel wire is provided at one end of the abutment arm, and the cross-sectional shape of the abutment plate is L-shaped.

[0024] Furthermore, a rubber layer is provided on the abutment plate, and an infrared camera connected to the main control screen by wires is provided on the abutment arm.

[0025] Furthermore, the main control screen is provided with a ranging monitoring module for controlling the infrared camera and the surveillance camera, a positioning and movement module for controlling the first linear module and the second linear module, an automatic measurement module for controlling the pressure sensor, a comparison and judgment module for controlling the surveillance camera, and a negative pressure control module for controlling the negative pressure generating device.

[0026] A welding method, characterized in that:

[0027] The welding process includes the following specific steps:

[0028] S1: Connect the power, start the main control screen, place the shell to be welded on the welding table, determine the welding position of the impeller and the shell to be welded through the monitoring camera, place the impeller at one end of the welding table, input the weight of the impeller on the main control screen, and the main control screen automatically calculates the suction generated by the negative pressure generating device, and then enters step S2;

[0029] S2: The main control screen automatically controls the positioning telescopic arm cover to cover the impeller according to the welding position. The user turns on the negative pressure generating device through the main control screen, the positioning telescopic arm adsorbs the impeller and moves the impeller to the welding position of the shell to be welded through the first linear module. The main control screen automatically controls the second linear module to extend the abutment arm so that one end surface of the abutment plate abuts against the bottom end of the impeller, so that the abutment plate cooperates with the positioning telescopic arm to fix the welding position of the impeller and the shell to be welded, and enters step S3;

[0030] S3: The monitoring camera locates the welding position, and the main control screen automatically welds the impeller and the shell to be welded through the welding parts. After the welding is completed, the negative pressure generating device is turned off, and the main control screen controls the first linear module to make the positioning telescopic arm separate from the impeller. The main control screen controls the second linear module to make the abutment arm separate from the impeller, and the welding table is rotated. Steps S1 to S3 are repeated to weld the next impeller until all welding is completed.

[0031] Furthermore, step S2 includes the following specific operation steps:

[0032] The specific judgment method is as follows:

[0033] S31: The user turns on two pressure sensors through the main control screen, and sets the standard pressure values ​​of the pressure sensors to Gn and Gm, the maximum vibration frequency to N, and the pressure change ranges of Gn and Gm to G1-G2. The bottom surface of the impeller presses the electric telescopic rod, and the main control screen records the actual pressure values ​​of the two pressure sensors as G3 and G4. At this time, the main control screen automatically records G1<Gn-G3<G2, G1<Gm-G4<G2, and enters step S32;

[0034] S32: The main control screen automatically welds the impeller and the shell to be welded through the welding parts. During the welding process, the main control screen records G3 and G4 in real time. If G1<Gn-G3<G2, G1<Gm-G4<G2, it proves that the welding position has not shifted, and welding continues until the welding is completed; if Gn-G3 or Gm-G4 is not between G1 and G2, it proves that the welding position has shifted, and welding is stopped. The pressure sensor transmits the pressure signal to the main control screen, and enters step S32;

[0035] Step S32: The main control screen automatically performs detection. If Gn-G3<G1, and Gm-G4>G2, it proves that the welding position is offset, and the impeller moves down close to one end of the shell to be welded. At this time, the main control screen detects that the suction force of the positioning telescopic arm is Q1. If Q1<Q, it proves that the positioning telescopic arm has fallen off, causing one end of the impeller to move downward, and reminds the user to check whether the positioning telescopic arm has fallen off; if Q1≥Q, the main control screen detects and displays the vibration frequencies of the two pressure sensors as N1 and N2. If N1 or N2 is greater than N, the user is reminded that the unstable welding speed causes the impeller vibration frequency to be too high, causing the welding position to move downward, and the user is required to adjust the welding speed and check the positioning status of the positioning telescopic arm.

[0036] Compared with the prior art, the present invention has the following beneficial effects: the present invention can complete the welding of the workpiece to be welded and the impeller through the mutual cooperation of the abutment arm and the positioning telescopic arm. At the same time, combined with the pressure value of the electric telescopic rod and the vibration frequency generated during welding, the main console automatically determines whether there is a welding misalignment between the workpiece to be welded and the impeller, and reminds the user of the reason for the offset of the welding position, which is convenient for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0038] Figure 1 It is a stereogram of the present invention.

[0039] Figure 2 It is a front view of the present invention.

[0040] Figure 3 This is a first operation schematic diagram of the present invention.

[0041] Figure 4 This is a second operation schematic diagram of the present invention.

[0042] Figure 5 It is a schematic diagram of the top structure of the present invention.

[0043] In the figure: 1. main frame; 2. base; 3. welding table; 4. main control screen; 5. positioning telescopic arm; 6. abutment arm; 7. welding part; 8. rotating motor; 9. first linear module; 10. second linear module; 11. monitoring camera; 20. alignment slot; 21. negative pressure generating device; 211. ventilation duct; 22. assembly cavity; 23. sub-cavity; 24. air inlet duct; 25. tee; 26. curve plate; 27. workbench; 28. installation room; 281. pressure sensor; 282. electric telescopic rod; 29. ​​opening; 31. air port; 50. electric valve; 51. hose; 52. suction port; 53. rubber ring; 61. telescopic motor; 62. abutment plate; 65. infrared camera. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0045] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0046] like Figures 1 to 5As shown, a mixer impeller welding processing device includes a main frame 1 with a base 2, a welding table 3 arranged at one end of the base 2, a workbench 27 arranged at the other end of the base 2, a main control screen 4 arranged at one side of the main frame 1, a first linear module 9 arranged at the top of the main frame 1, a positioning telescopic arm 5 mechanically connected to the first linear module 9, an abutment arm 6 arranged at one side of the main frame 1 and having a second linear module 10, a welding piece 7 arranged at the other end of the welding table 3, and a monitoring camera 11 arranged at one side of the main frame 1; wherein, the positioning telescopic arm 5 is connected to the main control screen 4 by wires, the welding table 3 is used to place the impeller and the shell to be welded, the monitoring camera 11 is used to monitor the connection position of the impeller and the shell to be welded, the first linear module 9 is used to control the movement of the positioning telescopic arm 5, the second linear module 10 is used to control the movement of the abutment arm 6, the first linear module 9 and the second linear module 10 are both connected to the main control screen 4 by wires, and the welding piece 7 is used to weld the impeller and the shell to be welded.

[0047] An assembly cavity 22 with a negative pressure generating device 21 is provided in the base 2, a ventilation pipe 211 with a tee 25 is provided at one end of the negative pressure generating device 21, a hose 51 for plugging and connecting with the tee 25 is provided inside the positioning telescopic arm 5, an electric valve 50 is provided between the tee 25 and the hose 51, the electric valve 50 is connected to the main control panel 4 with electric wires, and is used to control the connection between the tee 25 and the hose 51, a suction port 52 for connecting with the hose 51 is provided at one end of the positioning telescopic arm 5, and a rubber ring 53 for abutting against the surface of the impeller is provided on the suction port 52.

[0048] A curved plate 26 is provided on the workbench 27 , and one side of the impeller is in contact with one end of the curved plate 26 , so that the user can place the impeller horizontally and neatly on the workbench 27 .

[0049] A telescopic motor 61 for connecting to the main control screen 4 with electric wires is provided at one end of the abutment arm 6, an abutment plate 62 is provided at one end of the abutment arm 6, the cross-sectional shape of the abutment plate 62 is L-shaped, an alignment groove 20 abutting against the abutment plate 62 is provided on the base 2, a rubber layer is provided on the abutment plate 62, an infrared camera 65 connected to the main control screen 4 with electric wires is provided on the abutment arm 6, and in the initial state, the bottom end of the abutment plate 62 abuts against the alignment groove 20, and one end of the abutment plate 62 is flush with the notch end of the alignment groove 20.

[0050] The inner cavity at one end of the base 2 is provided with a sub-cavity 23 with a rotating motor 8, and the rotating motor 8 is detachably plugged into the welding table 3, and the rotating motor 8 is connected to the main control screen 4 by wires, so that the main control screen 4 drives the welding table 3 to rotate through the rotating motor 8; it is worth noting that an air port 31 is provided on the welding table 3, and one end of the air port 31 is connected to an air inlet pipe 24 for plugging with the other end of the tee 25, so that the negative pressure generated by the negative pressure generating device 21 can be adsorbed and fixed to the shell to be welded on the base 2 through the air port 31; when the shell to be welded passes through the air port 31, the air inlet 24 can be sucked and fixed to the shell to be welded on the base 2. When the opening 31 is adsorbed and fixed on the base 2, the impeller is placed horizontally on the workbench 27, and the positioning telescopic arm 5 is controlled to descend through the main control panel 4 until the rubber ring 53 abuts against the surface of the impeller. The main control panel 4 is controlled to open the electric valve 50, so that the positioning telescopic arm 5 adsorbs the impeller through negative pressure, and the abutting arm 6 and the positioning telescopic arm 5 cooperate to lift the impeller through the first linear module 9 and the second linear module 10, and the welding position of the impeller and the shell to be welded is determined through the monitoring camera 11 to avoid misaligned welding between the impeller and the shell to be welded.

[0051] An installation chamber 28 is provided in the inner cavity at the other end of the base 2, and two electric telescopic rods 282 with pressure sensors 281 are provided in the installation chamber 28. The two electric telescopic rods 282 are respectively arranged at both ends of the installation chamber 28. An opening 29 for the electric telescopic rods 282 to pass through is provided on the base 2. The two pressure sensors 281 are connected to the main control screen 4 by wires. In the initial state, one end of the electric telescopic rod 282 is flush with the surface of the base 2.

[0052] The main control screen 4 is provided with a ranging monitoring module for controlling the infrared camera 65 and the monitoring camera 11, a positioning and moving module for controlling the first linear module 9 and the second linear module 10, an automatic measurement module for controlling the pressure sensor 281, a comparison and judgment module for controlling the monitoring camera 11, and a negative pressure control module for controlling the negative pressure generating device 21.

[0053] Specifically, the present invention also includes a welding method for a mixer impeller:

[0054] S1: Connect the power, start the main control screen 4, place the shell to be welded on the welding table 3, determine the welding position of the impeller and the shell to be welded through the monitoring camera 11, place the impeller at one end of the welding table 3, input the weight of the impeller on the main control screen 4, the main control screen 4 automatically calculates the suction force generated by the negative pressure generating device 21 as Q, and then enters step S2;

[0055] S2: The main control panel 4 automatically controls the positioning telescopic arm 5 to cover the impeller according to the welding position. The user turns on the negative pressure generating device 21 through the main control panel 4 and opens the electric valve 50. The positioning telescopic arm 5 absorbs the impeller and moves the impeller to the welding position of the shell to be welded through the first linear module 9. The main control panel 4 automatically controls the second linear module 10 to extend the abutment arm 6 so that one end surface of the abutment plate 62 abuts against the bottom end of the impeller, so that the abutment plate 62 cooperates with the positioning telescopic arm 5 to fix the welding position of the impeller and the shell to be welded, and enters step S3;

[0056] S3: The monitoring camera 11 locates the welding position, and the main control screen 4 automatically welds the impeller and the shell to be welded through the welding part 7. After the welding is completed, the negative pressure generating device 21 is turned off, and the electric valve 50 is turned off. The main control screen 4 controls the first linear module 9 to make the positioning telescopic arm 5 separate from the impeller, and the main control screen 4 controls the second linear module 10 to make the abutment arm 6 separate from the impeller, and the welding table 3 is rotated. Steps S1 to S3 are repeated to weld the next impeller until all welding is completed.

[0057] Furthermore, step S2 also includes a method for detecting impeller welding offset:

[0058] S31: The user turns on the two pressure sensors 281 through the main control screen 4, and sets the standard pressure values ​​of the pressure sensors 281 to Gn and Gm, the maximum vibration frequency to N, and the pressure change ranges of Gn and Gm to G1-G2. At the same time, the two electric telescopic rods 282 are controlled to rise simultaneously through the main control screen 4, so that the bottom surface of the impeller presses the electric telescopic rods 282. The main control screen 4 records the actual pressure values ​​of the two pressure sensors 281 as G3 and G4. At this time, the main control screen 4 automatically records G1<Gn-G3<G2, G1<Gm-G4<G2, and enters step S32;

[0059] It is worth noting that Gm and G4 are the pressure values ​​at the end of the impeller close to the shell to be welded, Gn and G3 are the pressure values ​​at the end of the impeller far from the shell to be welded, G1 is the minimum pressure change, and G2 is the maximum pressure change;

[0060] S32: The main control screen 4 automatically welds the impeller and the shell to be welded through the welding piece 7. During the welding process, the main control screen records G3 and G4 in real time. If G1<Gn-G3<G2, G1<Gm-G4<G2, it proves that the welding position has not shifted, and welding continues until the welding is completed; if Gn-G3 or Gm-G4 is not between G1 and G2, it proves that the welding position has shifted, and welding is stopped. The pressure sensor 281 transmits the pressure signal to the main control screen 4, and enters step S32;

[0061] Step S32: The main control screen 4 automatically detects. If Gn-G3<G1, and Gm-G4>G2, it proves that the welding position is offset, and the impeller moves down close to one end of the shell to be welded. At this time, the main control screen 4 detects that the suction force of the positioning telescopic arm 5 is Q1. If Q1<Q, it proves that there is a gap between the impeller and the positioning telescopic arm 5, causing one end of the impeller to move down, and reminds the user to check the rubber layer of the positioning telescopic arm 5; if Q1≥Q, the main control screen 4 detects and automatically calculates the vibration frequency as N1 and N2 according to the pressure change of the two pressure sensors 281. If N1 or N2 is greater than N, it reminds the user that the welding speed is unstable, resulting in an excessively high vibration frequency of the impeller, causing the welding position to move down, and the user needs to adjust the welding speed and check the positioning state of the positioning telescopic arm 5;

[0062] It should be noted that, since one end of the impeller is fixed by the abutment plate 62, the end of the impeller away from the shell to be welded will not move.

[0063] Furthermore, step S32 also includes a method for detecting the impeller welding structure:

[0064] S321: The user selects the welding structure detection operation on the main control screen 4, and the main control screen 4 automatically adjusts the negative pressure suction force to Q2 according to the weight of the impeller. The user sets the moving distance of the positioning telescopic arm 5 to L, and sets the stagnation time after the movement to T1. At the same time, the abutment plate 62 is separated from the impeller, and then enters step S322;

[0065] S322: The main control screen 4 controls the positioning telescopic arm 5 to move the welded impeller until it stops after moving a distance of L. After the stop time reaches T1, the main control screen 4 automatically turns off the negative pressure generating device 21, and the impeller automatically returns to its original position according to the elasticity. At this time, the two pressure sensors 281 respectively record the pressure values ​​of G5 and G6. If G1<Gn-G5<G2, G1<Gm-G6<G2, the main control screen 4 displays that the impeller welding structure is qualified and the quality inspection is completed; if Gn-G5 is not between G1 and G2, G1<Gm-G6<G2, it proves that the welding structure strength of the impeller and the shell to be welded is qualified, and the quality of the impeller is unqualified. The main control screen 4 displays that the welding structure strength is unqualified and the quality of the impeller is unqualified; if Gn-G5 and Gm-G6 are both not between G1 and G2, it proves that the welding structure strength is unqualified, and the main control screen 4 displays that the welding structure is bent and there are bubbles in the welding structure.

[0066] It is worth noting that G5 is the pressure value at the end of the impeller away from the shell to be welded, and G6 is the pressure value at the end of the impeller close to the shell to be welded.

[0067] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0068] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A welding processing device for a mixer impeller, characterized in that: include: A main frame (1) with a base (2), A welding platform (3) is provided at one end of the base (2). A workbench (27) is provided at the other end of the base (2). A main control screen (4) is arranged on one side of the main frame (1). A first linear module (9) disposed at the top of the main frame (1), A positioning telescopic arm (5) mechanically connected to the first linear module (9), An abutment arm (6) provided on one side of the main frame (1) and having a second linear module (10), A welding piece (7) is provided at the other end of the welding platform (3), A monitoring camera (11) disposed on one side of the main frame (1); The welding table (3) is used to place the shell to be welded, the workbench (27) is used to place the impeller, the workbench (27) is provided with a curved plate (26), the monitoring camera (11) is used to monitor the connection position between the impeller and the shell to be welded, the first linear module (9) is used to control the movement of the positioning telescopic arm (5), the positioning telescopic arm (5) is used to stabilize the position of the impeller, and the second linear module (10) is used to control the movement of the abutment arm (6), the abutment arm (6) is used to abut against one end of the impeller and cooperate with the positioning telescopic arm (5) to locate the welding position of the impeller and the shell to be welded, and the welding piece (7) is used to weld the gap between the impeller and the shell to be welded.

2. The agitator impeller welding processing device according to claim 1, characterized in that: The base (2) is provided with an assembly cavity (22) with a negative pressure generating device (21); a ventilation pipe (211) is provided at one end of the negative pressure generating device (21); a hose (51) for communicating with the inside of the ventilation pipe (211) is provided inside the positioning telescopic arm (5); a suction port (52) for communicating with the hose (51) is provided at one end of the positioning telescopic arm (5); a rubber ring (53) is provided on the suction port (52); and an electric valve (50) is provided between the three-way valve (25) and the hose (51).

3. The agitator impeller welding processing device according to claim 2, characterized in that: A sub-cavity (23) having a rotating motor (8) is provided in an inner cavity at one end of the base (2); one end of the rotating motor (8) is plugged into the welding table (3), and the rotating motor (8) is connected to the main control panel (4) by electric wires, so that the main control panel (4) drives the welding table (3) to rotate through the rotating motor (8).

4. The agitator impeller welding processing device according to claim 3, characterized in that: The welding table (3) is provided with an air port (31), one end of the air port (31) being connected to an air inlet pipe (24) for plugging into the other end of the tee (25).

5. The welding processing device for a mixer impeller according to claim 4, characterized in that: The inner cavity at the other end of the base (2) is provided with an installation chamber (28), and an electric telescopic rod (282) with a pressure sensor (281) is provided in the installation chamber (28), and a total of two electric telescopic rods (282) are provided. The base (2) is provided with an opening (29) for the electric telescopic rod (282) to pass through, and the pressure sensor (281) is connected to the main control screen (4) by wires.

6. The agitator impeller welding processing device according to claim 5, characterized in that: A telescopic motor (61) for connecting to the main control panel (4) with electric wires is provided at one end of the abutment arm (6), an abutment plate (62) connected to the main control panel (4) with electric wires is provided at one end of the abutment arm (6), the cross-sectional shape of the abutment plate (62) is L-shaped, and an alignment groove (20) abutting against the abutment plate (62) is provided on the base (2).

7. The welding processing device for a mixer impeller according to claim 6, characterized in that: The abutment plate (62) is provided with a rubber layer, and the abutment arm (6) is provided with an infrared camera (65) connected to the main control screen (4) by wires.

8. The agitator impeller welding processing device according to claim 1, characterized in that: The main control screen (4) is provided with a distance measurement monitoring module for controlling the infrared camera (65) and the monitoring camera (11), a positioning movement module for controlling the first linear module (9) and the second linear module (10), an automatic measurement module for controlling the pressure sensor (281), a comparison and determination module for controlling the monitoring camera (11), and a negative pressure control module for controlling the negative pressure generating device (21).

9. A welding method, used in the agitator impeller welding device described in any one of 1 to 8 above, characterized in that: The welding method comprises the following specific steps: S1: Connect the power, start the main control screen (4), place the shell to be welded on the welding table (3), determine the welding position of the impeller and the shell to be welded by using the monitoring camera (11), place the impeller at one end of the welding table (3), input the weight of the impeller on the main control screen (4), the main control screen (4) automatically measures the suction force generated by the negative pressure generating device (21), and then enters step S2; S2: the main control screen (4) automatically controls the positioning telescopic arm (5) to cover the impeller according to the welding position, the user turns on the negative pressure generating device (21) through the main control screen (4), the positioning telescopic arm (5) absorbs the impeller and positions and moves the impeller to the welding position of the shell to be welded through the first linear module (9), the main control screen (4) automatically controls the second linear module (10) to extend the abutment arm (6), so that one end surface of the abutment plate (62) abuts against the bottom end of the impeller, so that the abutment plate (62) cooperates with the positioning telescopic arm (5) to fix the welding position of the impeller and the shell to be welded, and enters step S3; S3: The monitoring camera (11) locates the welding position, and the main control screen (4) automatically welds the impeller and the shell to be welded through the welding piece (7). After the welding is completed, the negative pressure generating device (21) is turned off, and the main control screen (4) controls the first linear module (9) to make the positioning telescopic arm (5) separate from the impeller. The main control screen (4) controls the second linear module (10) to make the abutment arm (6) separate from the impeller, and the welding table (3) is rotated. Steps S1 to S3 are repeated to weld the next impeller until all welding is completed.

10. A welding method according to claim 9, characterized in that: The step S2 includes the following specific operation steps: The specific judgment method is as follows: S31: The user turns on the two pressure sensors (281) through the main control screen (4), and sets the standard pressure values ​​of the pressure sensors (281) to Gn and Gm, the maximum vibration frequency to N, and the pressure change ranges of Gn and Gm to G1 to G2. The bottom surface of the impeller presses the electric telescopic rod (282), and the main control screen (4) records the actual pressure values ​​of the two pressure sensors (281) to G3 and G4. At this time, the main control screen (4) automatically records G1<Gn-G3<G2, G1<Gm-G4<G2, and enters step S32; S32: the main control screen (4) automatically welds the impeller and the shell to be welded through the welding piece (7). During the welding process, the main control screen records G3 and G4 in real time. If G1<Gn-G3<G2, G1<Gm-G4<G2, it proves that the welding position has not shifted, and welding continues until the welding is completed; if Gn-G3 or Gm-G4 is not between G1 and G2, it proves that the welding position has shifted, and welding is stopped. The pressure sensor (281) transmits the pressure signal to the main control screen (4), and enters step S32; Step S32: The main control screen (4) automatically performs a detection. If Gn-G3<G1, and Gm-G4>G2, it indicates that the welding position is offset and the impeller moves downward close to the end of the shell to be welded. At this time, the main control screen (4) detects that the suction force of the positioning telescopic arm (5) is Q1. If Q1<Q, it indicates that the positioning telescopic arm (5) has fallen off, causing one end of the impeller to move downward, and reminds the user to check whether the positioning telescopic arm (5) has fallen off; if Q1≥Q, the main control screen (4) detects and displays the vibration frequencies of the two pressure sensors (281) as N1 and N2. If N1 or N2 is greater than N, it reminds the user that the welding speed is unstable, resulting in an excessively high vibration frequency of the impeller, causing the welding position to move downward, and the user needs to adjust the welding speed and check the positioning state of the positioning telescopic arm (5).

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