Motor shaft core welding device

Abstract

The invention belongs to the technical field of welding devices, and discloses a motor shaft core welding device which comprises a mounting base and a welding gun, a core shaft and a plate body which are to be welded together are arranged on the outer side of the welding gun, the plate body perpendicularly abuts against the core shaft, a welding flux rod is placed at the to-be-welded position of the core shaft and the plate body, a pointer is fixed to the welding gun, grooves are formed in the two sides of the plate body, and the pointer is fixed to the mounting base. The groove is located in the area, close to the solder bar, of the plate body. When the welding gun moves in the axis direction of the mandrel, the pointer moves in the groove so that the welding gun can swing periodically. According to the invention, on one hand, the welding contact area between the welding flux and the plate body is increased, on the other hand, the molten welding flux generates capillary adsorption force in the groove structure, and the gravity influence can be counteracted through the action force, so that the welding flux is uniformly distributed, and the welding quality is ensured; and when the pointer moves along the groove, the welding gun can swing by a small amplitude, and the welding quality is further enhanced through the swing by the small amplitude.

Description

Technical Field

[0001] The invention belongs to the technical field of welding devices, and in particular relates to a motor shaft core welding device. Background Art

[0002] When welding the motor shaft core through a welding device, the plate body needs to be welded to the core shaft. During welding, the solder rod is placed at the welding position between the core shaft and the plate body, and then the solder rod is heated by a welding gun to melt it. The melted solder is distributed in the contact angle area between the core shaft and the plate body, and the core shaft and the plate body are welded together by the melted solder. However, since the plate body is arranged vertically relative to the core shaft, when the solder melts, the melted solder will be unevenly distributed under the action of its own gravity. To be precise, more solder is distributed on the core shaft, and less solder is distributed on the plate body. This will reduce the welding quality between the core shaft and the plate body, so this technical problem needs to be solved. Summary of the Invention

[0003] In response to the above situation, in order to overcome the defects of the prior art, the present invention provides a motor shaft core welding device, which effectively solves the problem that when the solder melts, the melted solder will be unevenly distributed under the action of its own gravity. To be precise, more solder is distributed on the core shaft, while less solder is distributed on the plate body, which will reduce the welding quality between the core shaft and the plate body.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a motor shaft core welding device, comprising a mounting seat and a welding gun, a core shaft and a plate body to be welded together are provided on the outside of the welding gun, the plate body is vertically abutted against the core shaft, a solder rod is placed at the position where the core shaft and the plate body are to be welded, a pointer is fixed on the welding gun, grooves are provided on both sides of the plate body, and the grooves are located in the area of ​​the plate body close to the solder rod; when the welding gun is displaced along the axial direction of the core shaft, the pointer moves in the groove, causing the welding gun to swing periodically.

[0005] Preferably, a welding gun is hingedly provided on the mounting seat, and an elastic member is provided at the hinge between the welding gun and the mounting seat.

[0006] Preferably, an axial hole is provided on the mounting seat, a plate seat is fixed on the welding gun, a shaft is fixed on the plate seat, the shaft is hinged to the axial hole, and an elastic member is provided at the hinge between the shaft and the axial hole.

[0007] Preferably, the elastic member is a torsion spring, one end of the torsion spring is fixed on the welding gun, and the other end of the torsion spring is fixed on the mounting seat.

[0008] Preferably, the groove is in the shape of a wave groove, which is used in conjunction with the pointer. The wave groove as a whole is arranged parallel to the axial direction of the core shaft, and the radial cross-section of the wave groove is hemispherical.

[0009] Preferably, the groove is shaped as a curved groove, which is used in conjunction with the pointer. The shape of the curved groove is wavy, and the curved groove includes multiple adjacent upper groove sections and lower groove sections. The upper groove sections and the lower groove sections are both inclined, and part of the lower groove section is located below the upper groove section.

[0010] Preferably, the groove is in the shape of a strip groove, the inner edges and corners of the strip groove are rounded, and the inner top wall of the strip groove is formed with a corrugated upper top, which is used in conjunction with the pointer.

[0011] Preferably, a gun seat is fixed on the mounting seat, and a welding gun is telescopically arranged on the gun seat along the axial direction of the welding gun, and the gun seat is fixed to the welding gun by a telescopic spring, and the groove includes a plurality of hemispherical grooves, and the plurality of hemispherical grooves are arranged parallel to the axial direction of the core shaft, and the hemispherical grooves are used in conjunction with the pointer.

[0012] Preferably, a horizontal frame, a horizontal rod, a screw, a servo motor, a vertical frame, a cylinder and a vertical rod are provided on the outside of the welding gun, wherein the horizontal rod and the servo motor are fixed on the horizontal frame, the screw is fixed on the output shaft of the servo motor and rotates with the horizontal frame; the horizontal hole on the vertical frame slides with the horizontal rod, the wire hole on the vertical frame is threaded with the screw, the cylinder is fixed on the vertical frame and its output end is fixed with the mounting seat, the vertical rod slides with the vertical hole on the vertical frame and is fixed to the mounting seat.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. During operation, the melted solder enters the interior of the groove through the cooperation of the provided pointer and the groove, which increases the welding contact area between the solder and the plate on the one hand, and on the other hand, the molten solder generates capillary adsorption force in the groove structure, which can offset the influence of gravity, thereby making the solder evenly distributed to ensure the quality of welding; and when the pointer moves along the groove, the welding gun will swing slightly, which further enhances the quality of welding.

[0014] 2. During operation, when the pointer moves forward along the upper slot section, the welding gun will swing. When the pointer enters the lower slot section, the pointer will retreat a certain distance and then enter the lower slot section again, so that the solder can be stacked for the second time, further improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] In the attached figure: Figure 1This is one of the structural schematic diagrams of a motor shaft core welding device of the present invention; Figure 2 This is a second structural schematic diagram of a motor shaft core welding device according to the present invention; Figure 3 For the present invention Figure 2 A in the middle is an enlarged structural diagram; Figure 4 For the present invention Figure 1 Schematic diagram of the structure from the middle side; Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 6 Schematic diagram of the strip groove structure of the present invention; Figure 7 It is a schematic diagram of the wave trough structure of the present invention; Figure 8 Schematic diagram of the bending groove structure of the present invention; Figure 9 This is a schematic diagram of the hemispherical groove structure of the present invention; Figure 10 It is a schematic diagram of the gun mount installation structure of the present invention.

[0017] In the figure: 1. Mounting seat; 2. Welding gun; 3. Mandrel; 4. Plate; 5. Solder rod; 6. Pointer; 7. Groove; 8. Wave groove; 9. Curved groove; 10. Upper groove section; 11. Lower groove section; 12. Strip groove; 13. Upper top; 14. Axis hole; 15. Plate seat; 16. Axis rod; 17. Gun seat; 18. Hemispherical groove; 19. Horizontal frame; 20. Horizontal rod; 21. Screw rod; 22. Vertical frame; 23. Cylinder; 24. Vertical rod; 25. Telescopic spring. DETAILED DESCRIPTION

[0018] The technical solutions 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 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.

[0019] Depend on Figures 1-10The present invention relates to a motor shaft core welding device, comprising a mounting base 1 and a welding gun 2, a core shaft 3 and a plate body 4 to be welded together are provided on the outside of the welding gun 2, the plate body 4 is vertically abutted on the core shaft 3, a solder rod 5 is placed on the welding position of the core shaft 3 and the plate body 4, a horizontal frame 19, a horizontal rod 20, a screw rod 21, a servo motor, a vertical frame 22, a cylinder 23 and a vertical rod 24 are provided on the outside of the welding gun 2, wherein the horizontal rod 20 and the servo motor are both fixed on the horizontal frame 19, the screw rod 21 is fixed on the output shaft of the servo motor and rotates with the horizontal frame 19; the horizontal hole on the vertical frame 22 slides with the horizontal rod 20, the wire hole on the vertical frame 22 is threadedly engaged with the screw rod 21, the cylinder 23 is fixed on the vertical frame 22 and its output end is fixed to the mounting base 1, the vertical rod 24 slides with the vertical hole on the vertical frame 22 and is fixed to the mounting base 1.

[0020] With this design, when in use, the servo motor drives the screw rod 21 to move, and with the guiding effect of the horizontal rod 20, the screw rod 21 drives the horizontal frame 19 to move in the horizontal direction through the thread, and the horizontal frame 19 drives the mounting base 1 on the vertical frame 22 to move in the horizontal direction; and the mounting base 1 can be driven to move in the vertical direction by the cylinder 23, and the stability of the movement of the mounting base 1 is improved by the vertical rod 24, so that the welding gun 2 on the mounting base 1 can move in the horizontal and vertical directions, so as to facilitate the welding gun 2 to be close to the welding point between the core shaft 3 and the plate body 4.

[0021] During welding, the solder rod 5 is placed at the welding point between the core shaft 3 and the plate body 4, and then the solder rod 5 is heated by the welding gun 2 to melt it. The melted solder is distributed in the contact angle area between the core shaft 3 and the plate body 4, and the core shaft 3 and the plate body 4 are welded together by the melted solder. However, since the plate body 4 is arranged vertically relative to the core shaft 3, when the solder melts, the melted solder will be unevenly distributed under the action of its own gravity. To be precise, more solder is distributed on the core shaft 3, and less solder is distributed on the plate body 4. This will reduce the welding quality between the core shaft 3 and the plate body 4, so this technical problem needs to be solved.

[0022] In order to solve the technical problem that the plate body 4 is arranged vertically relative to the core shaft 3, and therefore the molten solder is unevenly distributed under the action of its own gravity after melting, a pointer 6 is fixed on the welding gun 2, and grooves 7 are opened on both sides of the plate body 4. The grooves 7 are located in the area of ​​the plate body 5 close to the solder rod 3; when the welding gun 2 is displaced along the axial direction of the core shaft 4, the pointer 6 moves in the groove 7, causing the welding gun 2 to oscillate periodically.

[0023] With this design, when the welding gun 2 is horizontally displaced along the area to be welded, the setting of the groove 7 allows the melted solder to enter the interior of the groove 7, which on the one hand increases the welding contact area between the solder and the plate 4, and on the other hand, the molten solder generates a capillary adsorption force in the groove 7 structure, which can offset the influence of gravity and thus make the solder evenly distributed to ensure the quality of welding; and when the pointer 6 moves along the groove 7, the welding gun 2 will swing slightly, and the quality of welding will be further enhanced by the slight swing.

[0024] There are two swinging modes of the welding gun 2 in the present device. The first is a zigzag welding route, and the second is an up-and-down oscillating welding route.

[0025] As a type of welding route, the first zigzag welding route is as follows: A welding gun 2 is hingedly mounted on the mounting base 1 , and an elastic member is provided at the hinge between the welding gun 2 and the mounting base 1 .

[0026] The mounting base 1 is provided with an axial hole 14 , a plate base 15 is fixed on the welding gun 2 , a shaft 16 is fixed on the plate base 15 , the shaft 16 is hingedly engaged with the axial hole 14 , and an elastic member is provided at the hinge between the shaft 16 and the axial hole 14 .

[0027] The elastic member is a torsion spring, one end of which is fixed on the welding gun 2 , and the other end of which is fixed on the mounting base 1 .

[0028] With this design, the torsion spring is provided so that the welding gun 2 can always be in its original tilted state when it is not under stress. When it is under stress, under the action of the torsion spring, the shaft 16 and the shaft hole 14, the welding gun 2 can swing back and forth in a small range around the intersection of the shaft 16 and the shaft hole 14, thereby improving the welding quality.

[0029] As a first specific structure of the groove 7: the shape of the groove 7 is a wave groove 8, the wave groove 8 is used in conjunction with the pointer 6, the wave groove 8 as a whole is arranged parallel to the axial direction of the core shaft 3, and the radial cross-section of the wave groove 8 is hemispherical.

[0030] With this design, when the welding gun 2 is displaced horizontally, the pointer 6 moves inside the wave groove 8, and the welding gun 2 swings back and forth through the trajectory of the wave groove 8.

[0031] As the second specific structure of the groove 7: in order to further improve the welding quality, the shape of the groove 7 is a curved groove 9, which is used in conjunction with the pointer 6. The shape of the curved groove 9 is wavy, and the curved groove 9 includes a plurality of adjacent upper groove sections 10 and lower groove sections 11. The upper groove sections 10 and the lower groove sections 11 are both inclined, and a partial area of ​​the lower groove section 11 is located below the upper groove section 10.

[0032] With this design, since part of the lower slot section 11 is located below the upper slot section 10, when the pointer 6 moves forward along the upper slot section 10, the welding gun 2 will swing. When the pointer 6 enters the lower slot section 11, the pointer 6 will retreat a certain distance and then enter the lower slot section 11 again, so that the solder can be stacked and welded for the second time. This welding method undoubtedly further improves the welding quality.

[0033] As the third specific structure of the groove 7: the shape of the groove 7 is a strip groove 12, the internal edges and corners of the strip groove 12 are rounded, and the inner top wall of the strip groove 12 is formed with a corrugated upper top 13, which is used in conjunction with the pointer 6.

[0034] With this design, under the action of the torsion spring, the pointer 6 can be pressed against the edge of the upper top 13. As the pointer 6 moves, the upper top 13 causes the pointer 6 to fluctuate, thereby causing the welding gun 2 to swing, thereby achieving swing welding.

[0035] As a type of welding route, the second type of up and down fluctuating welding route is as follows: A gun seat 17 is fixed on the mounting seat 1, and the welding gun 2 is telescopically arranged on the gun seat 17 along the axial direction of the welding gun 2. For example, a through hole is opened inside the gun seat 17, and then the welding gun 2 is movably arranged in the through hole, and the welding gun 2 is fixed to the gun seat 17 by a telescopic spring 25; the groove 7 includes a plurality of hemispherical grooves 18, and the plurality of hemispherical grooves 18 are arranged parallel to the axial direction of the core shaft 3, and the hemispherical grooves 18 are used in conjunction with the pointer 6.

[0036] With this design, when the tip of the pointer 6 continuously enters and exits the hemispherical groove 18, the welding gun 2 will continuously fluctuate along its own axis, thereby realizing an up and down fluctuating welding route; wherein the gun seat 17 can also be installed on the mounting seat 1 like the plate seat 15. At this time, the torsion spring needs to maintain a certain force to maintain the stability of the gun seat 17.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A motor shaft core welding device, comprising a mounting base (1) and a welding gun (2), wherein a core shaft (3) and a plate body (4) to be welded are provided on the outside of the welding gun (2), the plate body (4) is vertically abutted on the core shaft (3), and a solder rod (5) is placed at the welding position between the core shaft (3) and the plate body (4), characterized in that: A pointer (6) is fixed on the welding gun (2), and grooves (7) are provided on both sides of the plate body (4), and the grooves (7) are located in an area of ​​the plate body (5) close to the solder rod (3); when the welding gun (2) is displaced along the axial direction of the core shaft (4), the pointer (6) moves in the groove (7), causing the welding gun (2) to oscillate periodically.

2. The motor shaft core welding device according to claim 1, characterized in that: A welding gun (2) is hingedly provided on the mounting seat (1), and an elastic member is provided at the hinged joint between the welding gun (2) and the mounting seat (1).

3. The motor shaft core welding device according to claim 2, characterized in that: The mounting seat (1) is provided with an axial hole (14), a plate seat (15) is fixed on the welding gun (2), a shaft (16) is fixed on the plate seat (15), the shaft (16) is hingedly connected to the axial hole (14), and an elastic member is provided at the hinge between the shaft (16) and the axial hole (14).

4. The motor shaft core welding device according to claim 3, characterized in that: The elastic member is a torsion spring, one end of which is fixed on the welding gun (2), and the other end of which is fixed on the mounting seat (1).

5. The motor shaft core welding device according to claim 1, characterized in that: The groove (7) is in the shape of a wave groove (8), which is used in conjunction with the pointer (6). The wave groove (8) is arranged parallel to the axis direction of the core shaft (3) as a whole, and the radial cross-section of the wave groove (8) is hemispherical.

6. The motor shaft core welding device according to claim 1, characterized in that: The groove (7) is in the shape of a curved groove (9), which is used in conjunction with the pointer (6). The curved groove (9) is in a wavy shape, and the curved groove (9) comprises a plurality of adjacent upper groove sections (10) and lower groove sections (11). The upper groove sections (10) and the lower groove sections (11) are both inclined, and a portion of the lower groove section (11) is located below the upper groove section (10).

7. The motor shaft core welding device according to claim 1, characterized in that: The groove (7) is in the shape of a strip groove (12), the inner edges and corners of the strip groove (12) are rounded, and the inner top wall of the strip groove (12) is formed with a corrugated top (13), which is used in conjunction with the pointer (6).

8. The motor shaft core welding device according to claim 1, characterized in that: A gun seat (17) is fixedly provided on the mounting seat (1), and a welding gun (2) is telescopically provided on the gun seat (17) along the axial direction of the welding gun (2), and the gun seat (17) is fixed to the welding gun (2) via a telescopic spring (25), and the groove (7) includes a plurality of hemispherical grooves (18), and the plurality of hemispherical grooves (18) are arranged parallel to the axial direction of the core shaft (3), and the hemispherical grooves (18) are used in conjunction with the pointer (6).

9. The motor shaft core welding device according to claim 1, characterized in that: The outside of the welding gun (2) is provided with a horizontal frame (19), a horizontal rod (20), a screw rod (21), a servo motor, a vertical frame (22), a cylinder (23) and a vertical rod (24), wherein the horizontal rod (20) and the servo motor are both fixed on the horizontal frame (19), the screw rod (21) is fixed on the output shaft of the servo motor and is rotationally matched with the horizontal frame (19); the horizontal hole on the vertical frame (22) is slidably matched with the horizontal rod (20), the thread hole on the vertical frame (22) is threadedly matched with the screw rod (21), the cylinder (23) is fixed on the vertical frame (22) and its output end is fixed with the mounting seat (1), and the vertical rod (24) is slidably matched with the vertical hole on the vertical frame (22) and is fixed with the mounting seat (1).

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