Submersible mixer blade assembly welding device and process

Abstract

The present invention relates to a submersible mixer blade assembly welding device and a process thereof, comprising a base and a welding robot arranged on one side of the base, a turntable for carrying a hub being rotatably arranged on the base, a clamping assembly being arranged on the turntable, the clamping assembly comprising a plurality of clamping blocks, a lifting assembly and a limiting assembly and a dust removal assembly driven by the lifting assembly being arranged on one side of the turntable, the limiting assembly comprising a positioning column and a plurality of limiting columns, an abutment assembly being arranged on one side of the lifting assembly, the clamping assembly clamps hubs of different sizes by adjusting the clamping blocks, the limiting assembly limits unwelded blades by the limiting columns and positions welded blades by the positioning columns, the lifting assembly is used to drive the limiting assembly to lift and lower and at the same time drive the dust removal assembly to clean welding slag, the abutment assembly is used to press the blades tightly before the welding robot welds the blades to the hub, thereby improving the degree of automation of welding and ensuring the stability of the hub and blades during welding.

Description

Technical Field

[0001] The present invention relates to the field of water treatment, and more particularly to a submersible mixer blade assembly welding device and a process thereof. Background Art

[0002] Submersible mixer, also known as submersible propeller, is an important equipment in sewage treatment process. The mixer is mainly composed of impeller, mechanical seal seat, mechanical seal, bearing seat, bearing, motor, etc., among which the impeller is the core part of the mixer. The impeller is generally composed of a hub and blades welded together. The hub needs to be fixed during welding, and then the blades are fixed on the hub surface before welding. At present, during the welding process, it is often encountered that the blades are not fixed in place and offset, resulting in several blades being unable to be welded to the hub at equal distances, which greatly reduces the use effect of the impeller. At the same time, some welding tooling sizes are fixed and cannot adapt to impellers of different sizes, and the welding process is cumbersome.

[0003] The Chinese patent publication number CN211680679U discloses a submersible mixer impeller welding device, comprising a three-jaw chuck, each jaw of the three-jaw chuck having a vertical plate fixed thereto, the vertical plate on each jaw being parallel to the sliding direction of the jaw, a support rod horizontally provided on the right side of the vertical plate for supporting the left side of the impeller, a positioning block provided on the upper end face of the jaw for supporting the right side of the impeller, the inner side of the positioning block extending 2 mm beyond the inner side of the jaw, and the entire device being flexible and adjustable, having a wide range of applications and accurate positioning, greatly improving the efficiency and quality of impeller welding. However, this welding device only supports the blades through the support rod and positioning block, lacks the ability to tighten and position the blades, and is prone to offset during welding, resulting in poor welding quality and the inability of the blades to be welded to the hub at equal distances. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and provide a submersible mixer blade assembly and welding device, which clamps hubs of different sizes through a clamping assembly, limits and abuts the blades through a limiting assembly and abutting assembly, and then welds them; the lifting assembly drives the limiting assembly to descend and disengage from the blades while driving the dust removal assembly to clean the welding slag; the turntable drives the hub and the welded blades to rotate; the limiting assembly rises after switching the welding point between the hub and the blades, limits the unwelded blades and positions the welded blades at the same time, thereby greatly improving the degree of automation of welding and ensuring the stability of the hub and blades during welding, so that the blades are welded on the hub at equal distances.

[0005] The technical solutions of the present invention are as follows:

[0006] A submersible mixer blade assembly and welding device comprises a base and a welding robot arranged on one side of the base, a turntable for carrying a hub being rotatably arranged on the base, a clamping assembly being arranged on the turntable, the clamping assembly comprising several clamping blocks, a lifting assembly and a limiting assembly and a dust removal assembly driven by the lifting assembly being arranged on one side of the turntable, the limiting assembly comprising a positioning column and several limiting columns, an abutment assembly being arranged on one side of the lifting assembly, the clamping assembly clamps hubs of different sizes by adjusting the clamping blocks, the limiting assembly limits unwelded blades by the limiting columns and positions welded blades by the positioning columns, the lifting assembly is used to drive the limiting assembly to lift and lower and at the same time drive the dust removal assembly to clean welding slag, and the abutment assembly is used for the welding robot to press the blades tightly before welding the blades to the hub.

[0007] As a preference, the clamping assembly also includes a first motor fixedly arranged on the turntable, a plurality of clamping grooves opened on the turntable, a first screw rod rotatably arranged in the clamping groove, a first bevel tooth fixedly arranged on the first screw rod, and a second bevel tooth rotatably arranged in the turntable, the clamping block is slidably arranged on the first screw rod and cooperates with the clamping groove, and a plurality of the first bevel teeth are engaged with the second bevel teeth.

[0008] As a preference, the lifting assembly includes a support plate, several rotating shafts rotatably arranged on the support plate, a second screw rod fixedly arranged on the rotating shaft, and a sliding plate slidably arranged on the second screw rod. Several of the second screw rods are connected by belts, and a second motor is fixedly connected to the second screw rod on one side.

[0009] The control block is slidably mounted on the third screw rod and cooperates with the limiting slot, the positioning post is slidably mounted on the fourth screw rod and cooperates with the positioning slot, and the abutment block is slidably mounted on the third screw rod.

[0010] As a preference, the abutment assembly includes an abutment seat, a fourth motor fixedly arranged on the abutment seat, a fifth screw rod rotatably arranged on the abutment seat, a guide rod fixedly arranged on the abutment seat, an abutment plate slidably arranged on the fifth screw rod, and an abutment head fixedly arranged on the abutment plate.

[0011] As a preferred embodiment, the dust removal assembly includes a fixed seat, a plurality of fourth bevel teeth rotatably arranged on the fixed seat, a guide cylinder rotatably arranged on the fixed seat, a guide groove opened on the guide cylinder, a cylinder body fixedly arranged on the fixed seat, a piston slidably arranged in the cylinder body, a rectangular rod fixedly arranged on the piston, and an air blowing nozzle fixedly arranged on the cylinder body, the bottom of the rectangular rod is set to be spherical and cooperates with the guide groove, a plurality of the fourth bevel teeth are engaged with each other, and the fourth bevel teeth are connected to the second motor and the guide cylinder by a belt.

[0012] As a preference, the guide groove is a wave-shaped groove structure.

[0013] As a preference, the abutment joint is made of hard rubber material.

[0014] Another design objective of the present invention is to provide a submersible mixer blade assembly welding process, comprising the following steps:

[0015] Step 1: Clamping process: After the wheel hub is placed on the turntable, the first motor drives the plurality of first screw rods to rotate simultaneously, and the clamping blocks are adjusted to clamp the wheel hub;

[0016] Step 2: Positioning process: The third motor drives the third and fourth screw rods to rotate simultaneously, driving the positioning column, the abutment block, and the position-limiting column to adjust. After the blade is placed between the position-limiting column and the abutment block for position limiting, the fourth motor drives the abutment head to descend and tighten the blade;

[0017] Step 3: Welding process: Use a welding robot to weld the blades to the hub;

[0018] Step 4, dust removal process: The third motor drives the limit column, positioning column and abutment block to descend and disengage from the blade, driving the piston to slide back and forth in the cylinder, so that the gas passes through the blowing nozzle to clean the welding slag;

[0019] Step 5, switching process: The turntable drives the hub and the welded blades to rotate. After switching the welding point between the hub and the blades, the third motor drives the limiting column, the positioning column and the abutment block to rise, limiting the unwelded blades while positioning the welded blades.

[0020] The beneficial effects of the present invention are

[0021] 1. The present invention is provided with a turntable and a clamping assembly. The turntable drives the hub to rotate so that the hub can switch the welding point, thereby improving the welding efficiency with the blade. By adjusting the distance between the clamping blocks, the hub can be clamped, ensuring stability during welding while achieving the effect of adapting to hubs of different sizes and improving adaptability.

[0022] 2. The present invention is also provided with a limiting component and a dust removal component, which limits the unwelded blades by the limiting column and the abutment block, so that the blades meet the welding requirements and can limit the blades of different sizes. At the same time, the welded blades are positioned by the positioning column, so that the blades are more stable during welding. The limiting column and the abutment block are separated from the blades while driving the gas to be injected back and forth into the blowing nozzle to clean the welding slag, eliminating the need for manual cleaning in the later stage and improving the blade welding quality.

[0023] In summary, the present invention has the advantages of good welding effect and high speed, and is suitable for the field of water treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of a submersible mixer blade assembly welding device and its process;

[0026] Figure 2 It is a schematic diagram of the structure of the clamping assembly, lifting assembly and limiting assembly;

[0027] Figure 3 Schematic diagram of the structure of the first screw rod;

[0028] Figure 4 Schematic diagram of the structure of the third screw rod and the fourth screw rod;

[0029] Figure 5 It is a structural diagram of the dust removal component;

[0030] Figure 6 is a structural schematic diagram of the abutment component;

[0031] Figure 7 This is a schematic diagram of the state when the clamping block clamps the rear limiting column of the hub and the abutment block limits the blade;

[0032] Figure 8 This is a schematic diagram of the state when the abutment head is lowered and pressed against the blade;

[0033] Figure 9 This is a schematic diagram of the hub rotating when the abutment joint and the limit post are separated from the blade after welding;

[0034] Figure 10This is a schematic diagram of the state when the limit column descends and drives the air blowing nozzle to clean the welding slag;

[0035] Figure 11 This is a schematic diagram of the state when the hub rotates to the next welding point for blade welding;

[0036] Figure 12 It is a process flow chart;

[0037] Figure numerals: 1 base, 2 hub, 3 turntable, 4 clamping assembly, 41 clamping block, 42 ​​first motor, 43 clamping groove, 44 first screw rod, 45 first bevel gear, 46 second bevel gear, 5 lifting assembly, 51 support plate, 52 rotating shaft, 53 second screw rod, 54 sliding plate, 55 second motor, 6 limiting assembly, 61 positioning column, 62 limiting column, 63 third motor, 64 limiting groove, 65 abutment groove, 66 third screw rod, 67 abutment block, 68 positioning groove, 69 fourth screw rod, 610 third bevel gear, 611 extension plate, 7 dust removal assembly, 71 fixed seat, 72 fourth bevel gear, 73 guide cylinder, 74 guide groove, 75 cylinder body, 76 piston, 77 rectangular rod, 78 blowing nozzle, 8 abutment assembly, 81 abutment seat, 82 fourth motor, 83 fifth screw rod, 84 guide rod, 85 abutment plate, 86 abutment joint, 9 blade. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings.

[0039] Example 1

[0040] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0041] like Figures 1 to 11As shown, a submersible mixer blade assembly welding device includes a base 1 and a welding robot arranged on one side of the base 1. A turntable 3 for carrying a hub 2 is rotatably provided on the base 1. A clamping assembly 4 is provided on the turntable 3. The clamping assembly 4 includes a plurality of clamping blocks 41. A lifting assembly 5 and a limit assembly 6 and a dust removal assembly 7 driven by the lifting assembly 5 are provided on one side of the turntable 3. The limit assembly 6 includes a positioning column 61 and a plurality of limit columns 62. An abutment assembly 8 is provided on one side of the lifting assembly 5. The clamping assembly 4 is adjusted The segment clamping block 41 clamps the hubs 2 of different sizes, the limiting assembly 6 limits the unwelded blades 9 through the limiting column 62 and positions the welded blades 9 through the positioning column 61, the lifting assembly 5 is used to drive the limiting assembly 6 to lift and lower while driving the dust removal assembly 7 to clean the welding slag, the abutment assembly 8 is used for the welding robot to press the blades 9 tightly before welding the blades 9 to the hub 2, wherein the blades 9 are placed manually or by a robot, and the turntable 3 is fixedly connected to a driving device, which can drive the turntable 3 to rotate.

[0042] It is worth mentioning that Figure 2 and Figure 7 As shown, the clamping assembly 4 also includes a first motor 42 fixedly arranged on the turntable 3, a plurality of clamping grooves 43 opened on the turntable 3, a first screw rod 44 rotatably arranged in the clamping groove 43, a first bevel gear 45 fixedly arranged on the first screw rod 44, and a second bevel gear 46 rotatably arranged in the turntable 3. The clamping block 41 is slidably arranged on the first screw rod 44 and cooperates with the clamping groove 43. The plurality of first bevel gears 45 are all engaged with the second bevel gears 46. During use, when the wheel hub 2 is placed on the turntable 3, the first motor 42 is turned on to drive the plurality of first screw rods 44, the first bevel gears 45 and the second bevel gears 46 to rotate, and drive the clamping block 41 to slide, thereby clamping the wheel hub 2, which has the effect of adapting to wheel hubs 2 of different sizes.

[0043] In addition, if Figure 3 and Figure 9 As shown, the lifting assembly 5 includes a support plate 51, several rotating shafts 52 rotatably set on the support plate 51, a second screw rod 53 fixedly set on the rotating shaft 52, and a sliding plate 54 slidably set on the second screw rod 53. Several second screw rods 53 are connected by belts, and a second motor 55 is fixedly connected to the second screw rod 53 on one side, wherein the sliding plate 54 is initially in a lifting state. When in use, the second motor 55 drives the several second screw rods 53 to rotate, thereby driving the sliding plate 54 to lift, and driving the limiting assembly 6 to lift, thereby limiting the blade 9; when the welding of the blade 9 is completed, the second motor 55 drives the second screw rod 53 to reverse, so that the limiting assembly 6 is separated from the blade 9, so that the blade 9 and the hub 2 can rotate, so that welding can continue.

[0044] It should be further explained that if Figures 2 to 11 As shown, the limiting assembly 6 also includes a third motor 63 fixedly arranged on the sliding plate 54, a plurality of limiting grooves 64 provided on the sliding plate 54, an abutting groove 65 provided on the sliding plate 54, a third screw rod 66 rotatably arranged in the limiting groove 64 and the abutting groove 65, an abutting block 67 slidably arranged in the abutting groove 65, a positioning groove 68 provided on the sliding plate 54, a fourth screw rod 69 rotatably arranged in the positioning groove 68, a third bevel gear 610 fixedly arranged on the third screw rod 66 and the fourth screw rod 69, an extension plate 611 fixedly arranged on the limiting column 62 and the positioning column 61, the third motor 63 is connected to the third screw rod 66 on one side, the third screw rod 66 in the plurality of limiting grooves 64 has the same thread, the third screw rod 66 in the abutting groove 65 has the same thread as the fourth screw rod 69 and both are opposite to the thread of the third screw rod 66 in the limiting groove 64, a plurality of third bevel gears 610 mesh with each other, and the limiting column 62 is slidably arranged in the third bevel gear 610. The second screw rod 66 is mounted on the second screw rod 66 and cooperates with the limiting groove 64. The positioning column 61 is slidably arranged on the fourth screw rod 69 and cooperates with the positioning groove 68. The abutment block 67 is slidably arranged on the third screw rod 66. The arc surface of the two limiting columns 62 fits with the side wall of the blade 9 to limit the blade 9. In use, when the sliding plate 54 is lifted, the third motor 63 drives the third screw rod 66, the third bevel gear 610, and the fourth screw rod 69 to rotate at the same time, thereby driving the two limiting columns 62, the positioning column 61, and the abutment block 67 to slide in relative or opposite directions at the same time, which can be adjusted according to blades 9 of different sizes. When the appropriate distance is adjusted, the blade 9 is placed on the extension plate 611 and the abutment block 67 on the two limiting columns 62. The abutment block 67 supports the bottom surface of the blade 9, and the extension plate 611 supports both sides of the blade 9. The arc surface of the limiting column 62 fits with the side wall of the blade 9 to limit the blade 9, so that the blade 9 meets the welding requirements.

[0045] It is worth mentioning that Figure 8 As shown, the abutment assembly 8 includes an abutment seat 81, a fourth motor 82 fixedly arranged on the abutment seat 81, a fifth screw rod 83 rotatably arranged on the abutment seat 81, a guide rod 84 fixedly arranged on the abutment seat 81, an abutment plate 85 slidably arranged on the fifth screw rod 83, and an abutment head 86 fixedly arranged on the abutment plate 85. When in use, after the blade 9 is limited, the fourth motor 82 drives the abutment plate 85 and the abutment head 86 to descend until the abutment head 86 is in contact with the upper surface of the blade 9, thereby achieving a tightening effect on the blade 9 and enhancing the stability of the blade 9 during welding. Then the welding robot welds the blade 9.

[0046] It should be emphasized that if Figure 9 and Figure 10As shown, the dust removal assembly 7 includes a fixed seat 71, a plurality of fourth bevel teeth 72 rotatably arranged on the fixed seat 71, a guide cylinder 73 rotatably arranged on the fixed seat 71, a guide groove 74 provided on the guide cylinder 73, a cylinder body 75 fixedly arranged on the fixed seat 71, a piston 76 slidably arranged in the cylinder body 75, a rectangular rod 77 fixedly arranged on the piston 76, and an air blowing nozzle 78 fixedly arranged on the cylinder body 75. The bottom of the rectangular rod 77 is set to be spherical and matched with the guide groove 74. A plurality of fourth bevel teeth 72 are meshed and the fourth bevel teeth 72 are connected to the second motor 55 and the guide cylinder 73 by a belt. In use, when the blade 9 is welded, the abutment head 86 rises and resets, and the second motor 55 Drive the second screw rod 53 to reverse, so that the limit column 62 and the abutment block 67 are separated from the blade 9. At the same time, the second motor 55 drives the fourth bevel gear 72 and the guide cylinder 73 to rotate, so that the rectangular rod 77 moves back and forth along the guide groove 74, thereby driving the piston 76 to move back and forth in the cylinder 75, so that the gas blows the welding point through the blowing nozzle 78 to clean the welding slag. When the limit column drops below the blade 9, the turntable 3 drives the hub 2 and the blade 9 to rotate, and stops after rotating to the next welding point of the hub 2, thereby continuing the above assembly welding action and welding the remaining blades 9. In addition, the blades 9 after welding are positioned by the positioning column 61, so that the blades 9 are more stable and more accurate during welding.

[0047] Further, such as Figure 10 As shown, the guide groove 74 is a wave-shaped groove structure, thereby driving the piston 76 to move back and forth, injecting gas into the blowing nozzle 78, and achieving a linkage effect.

[0048] In addition, if Figure 8 As shown, the abutment head 86 is made of hard rubber material, which plays a buffering role without damaging the blade 9.

[0049] like Figure 7 As shown, the clamping block 41 is provided with anti-slip grooves, which makes the wheel hub 2 clamped more firmly.

[0050] Example 2

[0051] like Figure 12 As shown, a submersible mixer blade assembly welding process includes the following steps:

[0052] Step 1: Clamping process: After the wheel hub 2 is placed on the turntable 3, the first motor 42 drives the first screw rods 44 to rotate simultaneously, and the clamping blocks 41 are adjusted to clamp the wheel hub 2;

[0053] Step 2: Positioning process: The third motor 63 drives the third screw 66 and the fourth screw 69 to rotate simultaneously, driving the positioning column 61, the abutment block 67, and the limiting column 62 to adjust. After the blade 9 is placed between the limiting column 62 and the abutment block 67 for position limiting, the fourth motor 82 drives the abutment head 86 to descend and tighten the blade 9;

[0054] Step 3, welding process: welding the blades 9 to the hub 2 by a welding robot;

[0055] Step 4: Dust removal process: The third motor 63 drives the limiting column 62, the positioning column 61 and the abutment block 67 to descend and disengage from the blade 9, thereby driving the piston 76 to slide back and forth in the cylinder 75, so that the gas passes through the blowing nozzle 78 to clean the welding slag;

[0056] Step 5, switching process: The hub 2 and the welded blades 9 are driven to rotate by the turntable 3. After the welding point between the hub 2 and the blades 9 is switched, the third motor 63 drives the limiting column 62, the positioning column 61 and the abutment block 67 to rise, limiting the unwelded blades 9 while positioning the welded blades 9.

[0057] Working process

[0058] When the hub 2 is placed on the turntable 3, the first motor 42 is turned on to drive several first screw rods 44, first bevel gears 45 and second bevel gears 46 to rotate, driving the clamping block 41 to slide and clamp the hub 2. Then the third motor 63 drives the third screw rod 66, the third bevel gear 610, and the fourth screw rod 69 to rotate at the same time, thereby driving the two limiting columns 62, the positioning column 61, and the abutment block 67 to slide in relative or opposite directions at the same time, which can be adjusted according to blades 9 of different sizes. After adjusting the appropriate distance, the blade 9 is placed on the extension plate 611 and the abutment block 67 on the two limiting columns 62. The abutment block 67 supports the bottom surface of the blade 9, and the extension plate 611 supports both sides of the blade 9 to limit the blade 9. Then the fourth motor 82 drives the abutment plate 85 and the abutment head 86 to descend until the abutment head 86 is in contact with the blade 9. The upper surfaces are in contact with each other, and the welding robot welds the blade 9. After welding is completed, the abutment 86 rises and resets, and the second motor 55 drives the second screw rod 53 to reverse, so that the limit column 62 and the abutment block 67 are separated from the blade 9. At the same time, the second motor 55 drives the fourth bevel gear 72 and the guide cylinder 73 to rotate, so that the rectangular rod 77 moves back and forth along the guide groove 74, thereby driving the piston 76 to move back and forth in the cylinder 75, so that the gas blows the welding point through the blowing nozzle 78 to clean the welding slag. When the limit column drops below the blade 9, the turntable 3 drives the hub 2 and the blade 9 to rotate, and stops after rotating to the next welding point of the hub 2, thereby continuing the above assembly welding action and welding the remaining blades 9. In addition, after welding, the blade 9 is positioned by the positioning column 61, so that the blade 9 is more stable and more accurate during welding.

[0059] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the invention.

[0060] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0061] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention. These should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A submersible mixer blade assembly welding device, comprising a base (1) and a welding robot arranged on one side of the base (1), characterized in that: A turntable (3) for carrying the wheel hub (2) is rotatably provided on the base (1), a clamping assembly (4) is provided on the turntable (3), and the clamping assembly (4) includes a plurality of clamping blocks (41). A lifting assembly (5) and a limit assembly (6) and a dust removal assembly (7) driven by the lifting assembly (5) are provided on one side of the turntable (3). The lifting assembly (5) includes a support plate (51), a plurality of rotating shafts (52) rotatably provided on the support plate (51), a second screw rod (53) fixedly provided on the rotating shaft (52), and a sliding plate (54) slidably provided on the second screw rod (53). The limit assembly (6) includes a positioning column (61). and a plurality of limiting columns (62), the limiting assembly (6) further comprising a third motor (63) fixedly arranged on the sliding plate (54), a plurality of limiting grooves (64) provided on the sliding plate (54), an abutting groove (65) provided on the sliding plate (54), a third screw rod (66) rotatably arranged in the limiting groove (64) and the abutting groove (65), an abutting block (67) slidably arranged in the abutting groove (65), a positioning groove (68) provided on the sliding plate (54), a fourth screw rod (69) rotatably arranged in the positioning groove (68), a third bevel tooth (610) fixedly arranged on the third screw rod (66) and the fourth screw rod (69), a plurality of limiting grooves (64) provided on the sliding plate (54), a plurality of limiting grooves (64) provided on the sliding plate (54), a plurality of limiting grooves (65 ...4) The third motor (63) is connected to the third screw rod (66) on one side, and the threads of the third screw rod (66) in the plurality of the limiting grooves (64) are consistent. The threads of the third screw rod (66) in the abutting groove (65) are consistent with the threads of the fourth screw rod (69) and both are opposite to the threads of the third screw rod (66) in the limiting groove (64). A plurality of the third bevel teeth (610) are engaged. The limiting column (62) is slidably set on the third screw rod (66) and matched with the limiting groove (64). The positioning column (61) is slidably set on the fourth screw rod (69) and matched with the positioning groove (68). The abutment block (67) is slidably arranged on the third screw rod (66), an abutment assembly (8) is arranged on one side of the lifting assembly (5), the clamping assembly (4) clamps the wheel hubs (2) of different sizes by adjusting the clamping block (41), the limiting assembly (6) limits the unwelded blades (9) through the limiting column (62) and positions the welded blades (9) through the positioning column (61), the abutment assembly (8) is used for the welding robot to press the blades (9) before welding them to the wheel hub (2), and the lifting assembly (5) is used to drive the limiting assembly (6) to move up and down while driving the dust removal assembly (7) to clean the welding slag.

2. The submersible mixer blade assembly welding device according to claim 1, characterized in that: The clamping assembly (4) further comprises a first motor (42) fixedly arranged on the turntable (3), a plurality of clamping grooves (43) provided on the turntable (3), a first screw rod (44) rotatably arranged in the clamping groove (43), a first bevel tooth (45) fixedly arranged on the first screw rod (44), and a second bevel tooth (46) rotatably arranged in the turntable (3); the clamping block (41) is slidably arranged on the first screw rod (44) and matched with the clamping groove (43); and the plurality of the first bevel teeth (45) are all meshed with the second bevel teeth (46).

3. The submersible mixer blade assembly welding device according to claim 2, characterized in that: A plurality of the second screw rods (53) are connected via a belt, and a second motor (55) is fixedly connected to one side of the second screw rod (53).

4. The submersible mixer blade assembly welding device according to claim 3, characterized in that: The abutment assembly (8) comprises an abutment seat (81), a fourth motor (82) fixedly arranged on the abutment seat (81), a fifth screw rod (83) rotatably arranged on the abutment seat (81), a guide rod (84) fixedly arranged on the abutment seat (81), an abutment plate (85) slidably arranged on the fifth screw rod (83), and an abutment head (86) fixedly arranged on the abutment plate (85).

5. The submersible mixer blade assembly welding device according to claim 4, characterized in that: The dust removal assembly (7) comprises a fixed seat (71), a plurality of fourth bevel teeth (72) rotatably arranged on the fixed seat (71), a guide cylinder (73) rotatably arranged on the fixed seat (71), a guide groove (74) provided on the guide cylinder (73), a cylinder (75) fixedly arranged on the fixed seat (71), a piston (76) slidably arranged in the cylinder (75), a rectangular rod (77) fixedly arranged on the piston (76), and an air blowing nozzle (78) fixedly arranged on the cylinder (75), wherein the bottom of the rectangular rod (77) is configured to be spherical and matched with the guide groove (74), the plurality of fourth bevel teeth (72) are engaged with each other, and the fourth bevel teeth (72) are connected to the second motor (55) and the guide cylinder (73) via a belt.

6. The submersible mixer blade assembly welding device according to claim 5, characterized in that: The guide groove (74) is a wave-shaped groove structure.

7. The submersible mixer blade assembly welding device according to claim 6, characterized in that: The abutment joint (86) is made of hard rubber material.

8. The submersible mixer blade assembly welding device according to claim 7, characterized in that: The clamping block (41) is provided with anti-slip grooves.

9. The welding process of the submersible mixer blade assembly welding device according to claim 8, characterized in that: The following steps are involved: Step 1: Clamping process: After the wheel hub (2) is placed on the turntable (3), the first motor (42) drives a plurality of first screw rods (44) to rotate simultaneously, and the clamping block (41) is adjusted to clamp the wheel hub (2); Step 2, limiting process: the third motor (63) drives the third screw rod (66) and the fourth screw rod (69) to rotate simultaneously, driving the positioning column (61), the abutment block (67), and the limiting column (62) to adjust, and the blade (9) is placed between the limiting column (62) and the abutment block (67) for limiting, and then the fourth motor (82) drives the abutment head (86) to descend to tighten the blade (9); Step 3, welding process: welding the blade (9) to the hub (2) by a welding robot; Step 4, dust removal process: the third motor (63) drives the limiting column (62), the positioning column (61) and the abutment block (67) to descend and disengage from the blade (9), thereby driving the piston (76) to slide back and forth in the cylinder (75), so that the gas passes through the blowing nozzle (78) to clean the welding slag; Step 5, switching process: the hub (2) and the welded blades (9) are driven to rotate by the turntable (3), and after the welding point between the hub (2) and the blades (9) is switched, the third motor (63) drives the limiting column (62), the positioning column (61) and the abutment block (67) to rise, thereby limiting the unwelded blades (9) and positioning the welded blades (9) at the same time.

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