Auxiliary welding device for water pump impeller machining

Abstract

The auxiliary welding device for water pump impeller machining comprises a welding table and a positioning table rotationally arranged on the welding table, a welding piece is placed on the positioning table, a mounting bin is arranged in the welding table, a servo motor is arranged in the mounting bin, and a power output shaft of the servo motor is connected with the positioning table; a tailor-welding positioning structure is arranged on the welding table, an auxiliary positioning structure is arranged in the middle of the positioning table and comprises a supporting frame, a rotating shaft and a threaded sleeve, the supporting frame is arranged in the middle of the positioning table, the rotating shaft penetrates through and is rotationally arranged on the supporting frame, and a limiting sliding groove is formed in the positioning table; two thread sets with opposite thread directions are arranged at the two ends of the rotating shaft, and the two threaded sleeves are connected with the two thread sets with the opposite thread directions through threads correspondingly. The invention relates to the technical field of water pump production equipment, and particularly provides an auxiliary welding device for water pump impeller machining.

Description

Technical Field

[0001] The invention relates to the technical field of water pump production equipment, in particular to an auxiliary welding device for processing a water pump impeller. Background Art

[0002] The main function of the water pump impeller is to transfer the mechanical energy of the prime mover to the liquid, increase the static pressure energy and kinetic energy of the liquid. The shape and size of the impeller are closely related to the performance of the liquid pump. The impeller group including the blades and the end cover can be cast or welded. Generally, the materials used for casting have certain toughness and ductility, and are suitable for occasions with general strength. High-strength alloy materials are used for welding in high temperature and high pressure environments.

[0003] The welding accuracy of the water pump impeller directly affects the performance of the water pump. A large amount of heat will be generated during the welding of the blades and the end cover. In order to reduce welding deformation and thermal stress, sequential welding or inverse symmetrical welding is generally used to reduce deformation and internal stress. Laser welding can be used for small impellers, but it is not suitable for large impellers. During welding, the blades must be accurately fixed on the end cover, and generally it is necessary to mark the lines at equal angles. There is no special marking and positioning device, which can easily lead to positioning deviations. It is also difficult to judge the deformation amount by observation during welding and adjust the welding process route. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing auxiliary welding device for water pump impellers has general applicability, general marking accuracy when positioning larger impeller blades, and does not have the function of assisting in judging the welding deformation during the welding process.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: This solution provides an auxiliary welding device for processing a water pump impeller, comprising a welding table and a positioning table rotatably arranged on the welding table, a welding part is placed on the positioning table, an installation bin is arranged in the welding table and a servo motor is arranged in the installation bin, a power output shaft of the servo motor is connected to the positioning table, a welding positioning structure is arranged on the welding table, and an auxiliary positioning structure is arranged in the middle of the positioning table.

[0006] Preferred technical solution one: the auxiliary positioning structure includes a support frame, a rotating shaft and a threaded sleeve, the support frame is arranged in the middle of the positioning platform, the rotating shaft passes through and is rotatably arranged on the support frame, the positioning platform is provided with a limiting slide groove, two ends of the rotating shaft are provided with two groups of thread groups with opposite thread directions, the threaded sleeve is provided with two groups of thread groups with opposite thread directions and are respectively connected to the two groups of thread groups by threads, the other end of the threaded sleeve is provided with an arc-shaped pressing block, and the bottom of the arc-shaped pressing block is slidably arranged in the limiting slide groove.

[0007] Preferred technical solution two: The welding positioning structure includes four groups of guide columns vertically installed at the four corners of the welding table and a supporting ceiling installed on the four groups of guide columns. An electric telescopic rod is provided in the middle of the supporting ceiling and the free end of the electric telescopic rod passes through the supporting ceiling and extends to the bottom. A lifting plate is provided on the free end of the electric telescopic rod. The four corners of the lifting plate are slidably connected to the four groups of guide columns, and the lifting plate is provided with positioning grooves corresponding to the blades of the welding part.

[0008] Preferred technical solution three: the positioning grooves include welding groove one, welding groove two and welding groove three, and the blades are positioned through the positioning grooves during the welding process.

[0009] Preferred technical solution four: guide rings are provided on the four sides of the supporting ceiling, a welding smoke dust curtain is slidably provided on the guide ring, a welding smoke suction device is provided on the top of the supporting ceiling, a suction head is provided at the bottom of the supporting ceiling and is connected to the welding smoke suction device through a hose.

[0010] Optimal technical solution five: A controller is provided on the welding table, and the servo motor, electric telescopic rod and welding fume suction equipment are all electrically connected to the controller.

[0011] Preferred technical solution six: four sets of positioning plates are provided at the four corners of the bottom of the welding table, and positioning bolts are penetrated through the positioning plates and connected by threads.

[0012] The invention proposes an auxiliary welding device for processing a water pump impeller, and the beneficial effects achieved by adopting the above structure are as follows:

[0013] (1) The support frame, rotating shaft and threaded sleeve can be quickly positioned according to the inner diameter of the welded part. The electric telescopic rod, lifting plate and positioning table are used to position the blades. The welding groove 1, welding groove 2 and welding groove 3 are used to weld a group of blades in three sections in sequence, thereby reducing welding deformation and internal stress.

[0014] (2) The welding smoke dust curtain is set up in conjunction with the welding smoke suction equipment to remove the welding smoke generated during the welding process and reduce pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 The overall structure of the auxiliary welding device for processing the water pump impeller proposed by the present invention is shown in FIG. Figure 1 ;

[0017] Figure 2The overall structure of the auxiliary welding device for processing the water pump impeller proposed by the present invention is shown in FIG. Figure 2 ;

[0018] Figure 3 The internal structure of the auxiliary welding device for processing the water pump impeller proposed by the present invention is shown in FIG. Figure 1 ;

[0019] Figure 4 The internal structure of the auxiliary welding device for processing the water pump impeller proposed by the present invention is shown in FIG. Figure 2 ;

[0020] Figure 5 This is a schematic diagram of the auxiliary positioning structure of an auxiliary welding device for processing a water pump impeller proposed by the present invention.

[0021] Among them, 1. welding table, 2. positioning table, 3. welding parts, 4. servo motor, 5. welding positioning structure, 6. auxiliary positioning structure, 7. support frame, 8. rotating shaft, 9. threaded sleeve, 10. arc holding block, 11. guide column, 12. supporting ceiling, 13. electric telescopic rod, 14. lifting plate, 15. welding slot one, 16. welding slot two, 17. welding slot three, 18. welding smoke suction equipment, 19. suction head, 20. controller, 21. positioning plate, 22. guide ring, 23. welding smoke dust curtain. DETAILED DESCRIPTION

[0022] The technical invention in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] Embodiment 1

[0025] like Figures 1 to 5As shown, the technical invention adopted by the present invention is as follows: an auxiliary welding device for processing a water pump impeller, comprising a welding table 1 and a positioning table 2 rotatably arranged on the welding table 1, a welding piece 3 is placed on the positioning table 2, a mounting bin is arranged in the welding table 1 and a servo motor 4 is arranged in the mounting bin, a power output shaft of the servo motor 4 is connected to the positioning table 2, a welding positioning structure 5 is arranged on the welding table 1, and an auxiliary positioning structure 6 is arranged in the middle of the positioning table 2; the auxiliary positioning structure 6 comprises a support frame 7, a rotating shaft 8 and a threaded sleeve 9, and the support frame 7 It is arranged in the middle of the positioning platform 2, the rotating shaft 8 passes through and is rotatably arranged on the support frame 7, the positioning platform 2 is provided with a limiting slide groove, two ends of the rotating shaft 8 are provided with two groups of thread groups with opposite thread directions, the threaded sleeve 9 is provided with two groups of thread groups which are respectively connected with the two groups of thread groups in opposite thread directions by threads, the other end of the threaded sleeve 9 is provided with an arc-shaped holding block 10, the bottom of the arc-shaped holding block 10 is slidably arranged in the limiting slide groove, four groups of positioning plates 21 are provided at the four corners of the bottom of the welding platform 1, and positioning bolts are provided through and through the positioning plates 21.

[0026] The welding positioning structure 5 includes four groups of guide columns 11 vertically installed at the four corners of the welding table 1 and a supporting ceiling 12 installed on the four groups of guide columns 11. An electric telescopic rod 13 is provided in the middle of the supporting ceiling 12, and the free end of the electric telescopic rod 13 passes through the supporting ceiling 12 and extends to the bottom. A lifting plate 14 is provided on the free end of the electric telescopic rod 13. The four corners of the lifting plate 14 are slidably connected to the four groups of guide columns 11. The lifting plate 14 is provided with positioning grooves corresponding to the blades of the welding piece 3. When in use, the positioning grooves are used to limit the blades and assist in welding.

[0027] Embodiment 2

[0028] Based on the first embodiment, Figure 3 As shown, the positioning grooves include welding groove 15, welding groove 2 16 and welding groove 3 17. The blades are positioned through the positioning grooves during the welding process. At the same time, the upper part of the blade is welded through welding groove 15, the middle part of the blade is welded through welding groove 2 16, and the lower part of the blade is welded through welding groove 3 17. A group of blades are divided into three sections and welded in sequence to reduce welding deformation and internal stress.

[0029] The four sides of the supporting ceiling 12 are also provided with guide rings 22, on which welding smoke dust curtains 23 are slidably provided. The top of the supporting ceiling 12 is provided with a welding smoke suction device 18, and the bottom of the supporting ceiling 12 is provided with a suction head 19 which is connected to the welding smoke suction device 18 through a hose.

[0030] A controller 20 is provided on the welding table 1 , and the servo motor 4 , the electric telescopic rod 13 and the welding fume suction device 18 are all electrically connected to the controller 20 .

[0031] During specific use, the welding part 3 is placed on the positioning table 2, and then the middle part of the rotating shaft 8 is rotated by hand to drive the two groups of threaded sleeves 9 to move outward, thereby driving the arc-shaped holding block 10 to fix the welding part 3, and then the electric telescopic rod 13 is started to drive the lifting plate 14 to move downward but not contact the welding part 3 to avoid interference with the weld bead, and then the upper part of the blade is welded through the welding groove 15, the lifting plate 14 is retracted, and the positioning table 2 is driven by the servo motor 4 to rotate to the next position, and the lifting plate 14 continues to limit the blade and weld the middle part of the blade through the welding groove 2 16, and then the lower part of the blade is welded through the welding groove 3 17. A group of blades are welded in three sections in sequence to reduce welding deformation and internal stress. During welding, the welding smoke is sealed by the welding smoke dust curtain, and the welding smoke is removed by the welding smoke suction equipment 18.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary welding device for processing a water pump impeller, characterized in that: The invention comprises a welding table (1) and a positioning table (2) rotatably arranged on the welding table (1), a welding piece (3) is placed on the positioning table (2), a mounting chamber is arranged in the welding table (1) and a servo motor (4) is arranged in the mounting chamber, a power output shaft of the servo motor (4) is connected to the positioning table (2), a welding positioning structure (5) is arranged on the welding table (1), and an auxiliary positioning structure (6) is arranged in the middle of the positioning table (2).

2. The auxiliary welding device for processing a water pump impeller according to claim 1, characterized in that: The auxiliary positioning structure (6) comprises a support frame (7), a rotating shaft (8) and a threaded sleeve (9); the support frame (7) is arranged at the middle part of the positioning platform (2); the rotating shaft (8) penetrates and is rotatably arranged on the support frame (7); a limiting slide groove is arranged on the positioning platform (2); two ends of the rotating shaft (8) are provided with two groups of threads with opposite thread directions; the threaded sleeve (9) is provided with two groups of threads with opposite thread directions respectively connected to the two groups of threads by threads; the other end of the threaded sleeve (9) is provided with an arc-shaped holding block (10); the bottom of the arc-shaped holding block (10) is slidably arranged in the limiting slide groove.

3. The auxiliary welding device for processing a water pump impeller according to claim 2, characterized in that: The welding positioning structure (5) comprises four groups of guide columns (11) vertically mounted at the four corners of the welding platform (1) and a supporting ceiling (12) mounted on the four groups of guide columns (11); an electric telescopic rod (13) is provided in the middle of the supporting ceiling (12); the free end of the electric telescopic rod (13) passes through the supporting ceiling (12) and extends downward; a lifting plate (14) is provided on the free end of the electric telescopic rod (13); the four corners of the lifting plate (14) are slidably connected to the four groups of guide columns (11); the lifting plate (14) is provided with positioning grooves corresponding to the blades of the welding piece (3); when in use, the blades are limited by the positioning grooves and the welding is assisted.

4. The auxiliary welding device for processing a water pump impeller according to claim 3, characterized in that: The positioning groove includes welding groove one (15), welding groove two (16) and welding groove three (17).

5. The auxiliary welding device for processing a water pump impeller according to claim 4, characterized in that: The four sides of the supporting ceiling (12) are also provided with guide rings (22), and welding smoke dust-proof curtains (23) are slidably provided on the guide rings (22). A welding smoke dust suction device (18) is provided on the top of the supporting ceiling (12), and a dust suction head (19) is provided at the bottom of the supporting ceiling (12) and is connected to the welding smoke dust suction device (18) through a hose.

6. The auxiliary welding device for processing a water pump impeller according to claim 5, characterized in that: The welding table (1) is provided with a controller (20), and the servo motor (4), the electric telescopic rod (13) and the welding fume suction device (18) are all electrically connected to the controller (20).

7. The auxiliary welding device for processing a water pump impeller according to claim 6, characterized in that: Four groups of positioning plates (21) are provided at the four corners of the bottom of the welding platform (1), and positioning bolts are penetrated through the positioning plates (21) and are threadedly connected.

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