Submersible mixer blade assembling and welding device and process thereof

Abstract

The submersible mixer blade assembling and welding device comprises a base and a welding robot arranged on one side of the base, a rotating disc used for bearing a hub is rotationally arranged on the base, a clamping assembly is arranged on the rotating disc, and the clamping assembly comprises a plurality of clamping blocks; a lifting assembly, a limiting assembly and a dust removal assembly are arranged on one side of the rotary disc, the limiting assembly and the dust removal assembly are driven by the lifting assembly, the limiting assembly comprises a positioning column and a plurality of limiting columns, an abutting assembly is arranged on one side of the lifting assembly, and the clamping assemblies clamp hubs of different sizes by adjusting clamping blocks. The limiting assembly is used for limiting an unwelded blade through a limiting column and positioning a welded blade through a positioning column at the same time, the lifting assembly is used for driving the limiting assembly to ascend and descend and driving the dust removal assembly to clean welding slag at the same time, and the abutting-against assembly is used for abutting against the blade before the welding robot welds the blade to a hub. The automation degree of welding is improved, and the stability of the hub and the blade during welding is ensured.

Description

Technical Field

[0001] The 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, the blades are usually not fixed in place and offset, resulting in several blades being unable to be welded equidistantly on the hub, 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 with publication number CN211680679U discloses a submersible mixer impeller welding device, including a three-jaw chuck, each jaw of the three-jaw chuck is fixed with a vertical plate, each jaw on the vertical plate is parallel to the sliding direction of the jaw, the right side of the vertical plate is horizontally provided with a support rod supporting the left side of the impeller, the upper end surface of the jaw is provided with a positioning block supporting the right side of the impeller, the inner side of the positioning block exceeds the inner side of the jaw by 2mm, the whole device is flexible and adjustable, with a wide range of applications and accurate positioning, which greatly improves the efficiency and quality of impeller welding. However, the welding device only supports the blades through the support rod and the positioning block, lacks the tightness and positioning of the blades, and is prone to offset during welding, resulting in poor welding quality and the blades cannot be welded on the hub at equal distances. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and to 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 limiting assembly is driven to descend and detach from the blades through a lifting assembly, and at the same time drives the dust removal assembly to clean the welding slag; the hub and the welded blades are driven to rotate through a turntable, and the limiting assembly rises after switching the welding point between the hub and the blades, and limits the unwelded blades while positioning the welded blades, thereby greatly improving the automation of welding and ensuring the stability of the hub and the 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 welding device comprises a base and a welding robot arranged on one side of the base, wherein a turntable for carrying a wheel hub is rotatably arranged on the base, a clamping assembly is arranged on the turntable, the clamping assembly comprises a plurality of clamping blocks, a lifting assembly and a limiting assembly and a dust removal assembly driven by the lifting assembly are arranged on one side of the turntable, the limiting assembly comprises a positioning column and a plurality of limiting columns, an abutment assembly is arranged on one side of the lifting assembly, the clamping assembly clamps wheel 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 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 the blades are welded to the wheel hub.

[0007] Preferably, the clamping assembly also includes a first motor fixedly mounted on the turntable, a plurality of clamping grooves provided on the turntable, a first screw rod rotatably mounted in the clamping groove, a first bevel tooth fixedly mounted on the first screw rod, and a second bevel tooth rotatably mounted in the turntable, the clamping block is slidably mounted on the first screw rod and cooperates with the clamping groove, and a plurality of the first bevel teeth are meshed with the second bevel teeth.

[0008] Preferably, the lifting assembly includes a support plate, a plurality of 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, and the plurality of second screw rods are connected by belts, and a second motor is fixedly connected to the second screw rod on one side.

[0009] As a preferred embodiment, the limit assembly also includes a third motor fixedly arranged on the sliding plate, a plurality of limit grooves provided on the sliding plate, an abutment groove provided on the sliding plate, a third screw rod rotatably arranged in the limit groove and the abutment groove, an abutment block slidably arranged in the abutment groove, a positioning groove provided on the sliding plate, a fourth screw rod rotatably arranged in the positioning groove, a third bevel tooth fixedly arranged on the third screw rod and the fourth screw rod, an extension plate fixedly arranged on the limit column and the positioning column, the third motor is connected to a third screw rod on one side, the third screw rod threads in the plurality of limit grooves are consistent, the third screw rod threads in the abutment groove are consistent with the fourth screw rod threads and both are opposite to the third screw rod threads in the limit groove, a plurality of the third bevel teeth are meshed with each other, the limit column is slidably arranged on the third screw rod and cooperates with the limit groove, the positioning column is slidably arranged on the fourth screw rod and cooperates with the positioning groove, and the abutment block is slidably arranged on the third screw rod.

[0010] Preferably, the abutment assembly includes an abutment seat, a fourth motor fixedly mounted on the abutment seat, a fifth screw rod rotatably mounted on the abutment seat, a guide rod fixedly mounted on the abutment seat, an abutment plate slidably mounted on the fifth screw rod, and an abutment head fixedly mounted 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 spherical and cooperates with the guide groove, the plurality of fourth bevel teeth are meshed 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 preferred embodiment, the abutment head 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 a plurality of first screw rods to rotate simultaneously, and the clamping block is adjusted to clamp the wheel hub;

[0016] Step 2, limiting process: the third motor drives the third screw rod and the fourth screw rod to rotate simultaneously, driving the positioning column, the abutment block and the limiting column to adjust, and after the blade is placed between the limiting column and the abutment block for limiting, the fourth motor drives the abutment head to descend to tighten the blade;

[0017] Step 3, welding process: welding the blades to the hub by a welding robot;

[0018] Step 4, dust removal process: the third motor drives the limit column, the positioning column and the abutment block to descend and separate from the blade, and drives 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, and after switching the welding point between the hub and the blades, the third motor drives the limit column, the positioning column and the abutment block to rise, so as to limit the unwelded blades and position the welded blades at the same time.

[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 wheel hub to rotate so that the wheel hub can switch the welding point, thereby improving the welding efficiency with the blade. The wheel hub can be clamped by adjusting the distance between the clamping blocks, thereby ensuring the stability during welding and achieving the effect of adapting to wheel hubs of different sizes, thereby improving the adaptability.

[0022] 2. The present invention also provides a limiting component and a dust removal component. The limiting columns and the abutment blocks are used to limit the unwelded blades so that the blades meet the welding requirements and blades of different sizes can be limited. The positioning columns are used to position the welded blades so that the blades are more stable during welding. The limiting columns and the abutment blocks are separated from the blades and drive the gas to be reciprocated and injected into the blowing nozzle to clean the welding slag, thereby eliminating the need for manual cleaning in the later stage and improving the welding quality of the blades.

[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 in conjunction with the accompanying drawings:

[0025] Figure 1 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, the lifting assembly and the limiting assembly;

[0027] Figure 3 is a schematic structural diagram of a first screw rod;

[0028] Figure 4 is a schematic diagram of the structure of the third screw rod and the fourth screw rod;

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

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

[0031] Figure 7 It 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 It is a schematic diagram of the state when the abutment head is lowered and pressed against the blade;

[0033] Fig. 9 It is a schematic diagram of the state in which the hub rotates when the abutment joint and the limit post are separated from the blade after welding;

[0034] Fig.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] Fig.11 It is a schematic diagram of the state when the hub rotates to the next welding point for blade welding;

[0036] Fig.12 is a process flow chart;

[0037] Figure numerals: 1 base, 2 wheel 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 head, 9 blade. DETAILED DESCRIPTION

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

[0039] Embodiment 1

[0040] Embodiments of the present invention are described in detail below, 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 should not 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 arranged on the base 1. A clamping assembly 4 is arranged 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 arranged 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 arranged on one side of the lifting assembly 5. The clamping assembly 4 is adjusted by The segment clamping block 41 clamps the wheel 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 and drive the dust removal assembly 7 to clean the welding slag, the abutment assembly 8 is used for the welding robot to abut the blades 9 before welding the blades 9 to the wheel 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 meshed with the second bevel gears 46. When in use, after 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 being adaptable to wheel hubs 2 of different sizes.

[0043] In addition, if Figure 3 and Fig. 9 As shown, the lifting assembly 5 includes a support plate 51, a plurality of rotating shafts 52 rotatably arranged on the support plate 51, a second screw rod 53 fixedly arranged on the rotating shaft 52, and a sliding plate 54 slidably arranged on the second screw rod 53, wherein the plurality of 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, and when in use, the second motor 55 drives the plurality of second screw rods 53 to rotate, thereby driving the sliding plate 54 to be lifted, and driving the limiting assembly 6 to be lifted, so as to limit 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 be rotated, 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 tooth 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 have 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 teeth 610 mesh with each other, and the limiting column 62 is slidably arranged in the third The screw rod 66 is on the 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 surfaces of the two limiting columns 62 are in contact with the side walls of the blade 9 to limit the blade 9. When in use, after 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. 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. The arc surface of the limiting column 62 is in contact 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 Fig. 9 and Fig.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 a 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. The 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 through a belt. When in use, after the blade 9 is welded, the abutment head 86 rises and resets, and the second motor 55 The second screw rod 53 is driven to reverse, so that the limiting 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 body 75, so that the gas blows the welding point through the blowing nozzle 78 to clean the welding slag. When the limiting 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 Fig.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 to clamp the wheel hub 2 more firmly.

[0050] Embodiment 2

[0051] like Fig.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 a plurality of first screw rods 44 to rotate simultaneously, and the clamping block 41 is adjusted to clamp the wheel hub 2;

[0053] 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;

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

[0055] Step 4, dust removal process: the third motor 63 drives the limit column 62, the positioning column 61 and the abutment block 67 to descend and disengage from the blade 9, and drives 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, thereby limiting the unwelded blades 9 and positioning the welded blades 9 at the same time.

[0057] Working process

[0058] When the wheel hub 2 is placed on the turntable 3, the first motor 42 is turned on to drive the 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 to clamp the wheel 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 head 86 rises and resets, and the second motor 55 drives the second screw rod 53 to reverse, so that the limiting 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 reciprocates along the guide groove 74, thereby driving the piston 76 to reciprocate in the cylinder 75, so that the gas blows the welding point through the blowing nozzle 78 to clean the welding slag. When the limiting 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.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions 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 component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0060] Of course, in the present 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, which 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 arranged on the base (1); a clamping assembly (4) is arranged on the turntable (3); the clamping assembly (4) comprises 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 arranged on one side of the turntable (3); the limit assembly (6) comprises a positioning column (61) and a plurality of limit columns (62); an abutment assembly (8) is arranged on one side of the lifting assembly (5); The holding assembly (4) clamps wheels (2) of different sizes by adjusting the clamping block (41); the limiting assembly (6) limits the unwelded blades (9) by means of the limiting column (62) and positions the welded blades (9) by means of the positioning column (61); the abutting assembly (8) is used by the welding robot to abut 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 be lifted and lowered and drive the dust removal assembly (7) to clean the welding slag.

2. A 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 a 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 1, characterized in that: The lifting assembly (5) comprises a support plate (51), a plurality of rotating shafts (52) rotatably arranged on the support plate (51), a second screw rod (53) fixedly arranged on the rotating shaft (52), and a sliding plate (54) slidably arranged on the second screw rod (53), wherein the plurality of 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.

4. A submersible mixer blade assembly welding device according to claim 3, characterized in that: The limiting assembly (6) further comprises 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), an extension plate fixedly arranged on the limiting column (62), and the positioning column (61). (611), the third motor (63) is connected to a third screw rod (66) on one side, the threads of the third screw rod (66) in a plurality of the limiting grooves (64) are consistent, the threads of the third screw rod (66) in the abutment 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 meshed, the limiting column (62) is slidably set on the third screw rod (66) and cooperates with the limiting groove (64), the positioning column (61) is slidably set on the fourth screw rod (69) and cooperates with the positioning groove (68), and the abutment block (67) is slidably set on the third screw rod (66).

5. The submersible mixer blade assembly welding device according to claim 1, 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).

6. The submersible mixer blade assembly welding device according to claim 3, 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); the bottom of the rectangular rod (77) is arranged in a spherical shape and matches the guide groove (74); the plurality of fourth bevel teeth (72) are meshed with each other, and the fourth bevel teeth (72) are connected to the second motor (55) and the guide cylinder (73) through a belt.

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

8. The submersible mixer blade assembly welding device according to claim 5, characterized in that: The abutment head (86) is made of hard rubber material.

9. The submersible mixer blade assembly welding device according to claim 1, characterized in that: The clamping block (41) is provided with anti-slip grooves.

10. A submersible mixer blade assembly welding process, 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 after the blade (9) is placed between the limiting column (62) and the abutment block (67) for limiting, the fourth motor (82) drives the abutment head (86) to descend to abut against 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 rotating disk (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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