Positioning device for motor welding

Abstract

The utility model relates to the technical field of copper bar rotor motor production, in particular to a positioning device for motor welding. Comprising a support, a supporting assembly is rotatably arranged in the center of the lower end of the support, two clamping assemblies are arranged in the support above the supporting assembly, the clamping assemblies are connected with a driving assembly, a penetrating hole is formed in the center of the upper end of the support, a supporting sleeve is rotatably arranged in the penetrating hole, and the supporting assembly and the supporting sleeve are concentric; an upper screw rod is rotationally connected to the fixed plate, a movable plate is in threaded connection to the upper screw rod, the movable plate is in sliding connection with the upper end of the support, an upper plate is arranged above the movable plate and connected with the movable plate through an adjusting assembly, and a heat preservation gun is fixed to the upper plate. The heat preservation gun does not rotate along with the copper bar rotor, the heat preservation gun can heat the welding ends of the multiple copper bars of the copper bar rotor in the rotating process of the copper bar rotor, the heat preservation gun does not need to be moved frequently in the welding process, and the welding efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a copper bar rotor motor production technical field, concretely relates to a positioning device for motor welding. BACKGROUND

[0002] In the copper bar rotor motor production process, dozens of copper bars need to be accurately inserted into the rotor core, and each one needs to be tightly welded with the end ring. Under normal circumstances, the welding site temperature needs to be maintained by using a gas welding gun, and then welding operation is carried out by using a welding gun. The welder needs to maintain the distance between the gas welding gun and the copper ring, and also needs to weld the copper ring and the copper bar. The labor intensity of the operator is greatly increased during the welding process, and the production efficiency is low.

[0003] The patent file with publication number CN217942326U discloses a copper bar squirrel cage rotor end ring welding alignment tool, which controls the servo motor to control the lifting of the lifting platform, and the lifting precision can reach 1mm, so that the copper bar end and the copper ring welding groove are reliably connected, and the welding quality of the copper ring is improved. The radial lever moves the copper ring to realize the positioning of the copper ring in the radial direction. The patent solves the technical problem of how to accurately insert the copper bar end into the slot of the copper ring to improve the welding quality.

[0004] The patent file with publication number CN203679484U discloses a copper bar rotor motor welding tool. During welding operation, the rotor with copper bars and end rings is lifted by an electric hoist, the rotor shaft is inserted into the rotor shaft cavity through the through hole on the circular table surface, the rotor is pressed on the support block on the welding washer, the heat preservation welding gun positioning piece is inserted into the appropriate insertion slot, the heat preservation welding gun is fixed on the heat preservation welding gun positioning piece through the omega-shaped flat iron, the gun barrel is aligned with the end ring, the heat preservation welding gun is ignited, and the size is adjusted to the appropriate size. After preheating the welding site, the silver-zinc welding rod is melted by the gas welding gun to uniformly flow and fill in the gap between the copper bar and the end ring. The size of the heat preservation welding gun is adjusted to keep the welding site slowly cooled to prevent cracks caused by excessive heat stress or pores caused by rapid solidification of the filler. After welding, the operator does not need to move the body, but only needs to rotate the turntable and move the up and down welding gun to weld each copper bar one by one. Although the welding tool can position the heat preservation welding gun, it cannot adjust the distance between the heat preservation welding gun and the end ring during welding, and it cannot be applied to copper bars of different diameters. The heat preservation welding gun positioning piece needs to be frequently inserted and pulled out when welding different copper bar ends, which affects the welding efficiency. UTILITY MODEL CONTENTS

[0005] The utility model relates to a positioning device for motor welding, which can adjust the position of the heat preservation gun and is suitable for copper bar rotors with different diameters.

[0006] To achieve the above object, the utility model provides a technical scheme which is:

[0007] A positioning device for motor welding, comprising a support, a support assembly is rotationally arranged at the lower end center of the support, two clamping assemblies are arranged in the support above the support assembly, the two clamping assemblies are symmetrically arranged according to the axis of the support assembly, the clamping assemblies are connected with a driving assembly, the driving assembly can drive the two clamping assemblies to synchronously and at the same speed approach each other or move away from each other, a through hole is formed at the upper end center of the support, a support sleeve is rotationally arranged in the through hole, the support assembly is concentric with the support sleeve, a fixed plate is fixed to the upper end of the support on one side of the support sleeve, an upper screw rod is rotationally connected to the fixed plate, the axial direction of the upper screw rod is parallel to the radial direction of the support sleeve, a moving plate is threadedly connected to the upper screw rod, the moving plate is slidably connected to the upper end of the support, an upper plate is arranged above the moving plate, the upper plate is connected with the moving plate through an adjusting assembly, the adjusting assembly can adjust the height of the upper plate, and a heat preservation gun is fixed to the upper plate.

[0008] Specifically, the support comprises a bottom plate, two support plates are fixed to the upper end of the bottom plate, the two support plates are fixedly connected through a top plate, the through hole is formed in the top plate, the fixed plate is fixed to the upper end of the top plate, and the moving plate is slidably connected to the top plate.

[0009] Specifically, the support assembly comprises a fixed column fixed to the upper end center of the bottom plate, a vertical lower screw rod is concentrically and threadedly connected to the upper end of the fixed column, and a turntable is concentrically and rotationally connected to the upper end of the lower screw rod.

[0010] Specifically, the lower screw rod is threadedly connected with a locking nut.

[0011] Specifically, the clamping assembly comprises a connecting plate, a guard plate is fixed to one side of the connecting plate facing the center of the bottom plate, the front and rear sides of the guard plate are bent towards the center of the bottom plate and form bent portions, and universal balls are mounted on the opposite end faces of the two bent portions.

[0012] Specifically, the driving assembly comprises a forward and reverse screw rod rotationally arranged between the two support plates, the forward and reverse screw rod is horizontally arranged, the connecting plates on the two sides are threadedly connected with the threaded portions on the two sides of the forward and reverse screw rod, a horizontal lower light rod is fixed between the two support plates on one side of the forward and reverse screw rod, the lower light rod penetrates through the connecting plates, the lower light rod is slidably connected with the connecting plates, an electric motor is fixed to any one of the support plates, and the output shaft of the electric motor is concentrically and fixedly connected with the forward and reverse screw rod.

[0013] Specifically, the support sleeve comprises a rotating ring, the rotating ring is rotationally arranged in the through hole, and a top sleeve is concentrically and fixedly arranged at the upper end of the rotating ring.

[0014] Specific, the adjusting assembly includes vertically arranged adjusting screw, adjusting screw is rotatably connected with the upper plate, adjusting screw is threadedly connected with the moving plate, the lower end of the upper plate is fixed with a vertical light bar, the light bar is slidably connected with the moving plate.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1、Copper bar rotor rotates, the heat preservation gun does not rotate with copper bar rotor, therefore, the heat preservation gun can heat the welding end of multiple copper bars of copper bar rotor in the process of copper bar rotor rotation, and the heat preservation gun does not need to be frequently moved in the welding process, so that the welding efficiency can be improved.

[0017] 2、The height and position of the heat preservation gun can be adjusted, so that the copper ring and the copper bar welding end of the copper bar rotor of different diameters can be heated and preserved, and the application range is wide.

[0018] 3、The height of the turntable can be adjusted, the turntable can rotate, the turntable can support copper bar rotors of different lengths, the application range is wide, and smooth rotation of the copper bar rotor can be ensured, so that the labor intensity can be reduced in the welding process.

[0019] 4、The clamping assembly can clamp and centralize the rotating shaft of the copper bar rotor of different diameters, so that the copper bar rotor can be concentric with the supporting sleeve, eccentric rotation of the copper bar rotor can be prevented, and smooth rotation of the copper bar rotor can be ensured. The heat preservation gun can accurately heat and preserve the copper bar welding end in the copper ring insertion slot in the process of copper bar rotor rotation. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic view of the positioning device.

[0021] Figure 2 It is Figure 1 A-A sectional view.

[0022] Figure 3 It is a schematic view when the copper bar rotor is welded.

[0023] The names of parts in the drawings are: 1, bottom plate, 2, support plate, 3, top plate, 4, fixed column, 5, lower screw, 6, turntable, 7, forward and reverse screw, 8, lower light bar, 9, connecting plate, 10, guard plate, 11, universal ball, 12, motor, 13, top sleeve, 14, moving plate, 15, fixed plate, 16, upper screw, 17, adjusting screw, 18, upper light bar, 19, upper plate, 20, heat preservation gun, 21, rotating ring, 22, copper bar rotor, 23, welding gun, 24, copper ring, 25, copper bar. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0025] Embodiment one: refer to Figures 1-3 As shown in FIG. 1, a positioning device for motor welding, comprising a support, the support comprises a bottom plate 1, two support plates 2 are fixed on the upper end of the bottom plate 1, and the two support plates 2 are fixedly connected through a top plate 3.

[0026] The lower end of the support is rotatably provided with a supporting assembly.

[0027] The supporting assembly comprises a fixed column 4 fixed at the center of the upper end of the bottom plate 1, a vertical lower screw rod 5 is concentrically connected to the upper end of the fixed column 4, and a locking nut is threadedly connected to the lower screw rod 5. The upper end of the lower screw rod 5 is concentrically connected with a rotating disc 6.

[0028] A through hole is formed at the center of the upper end of the support, and specifically, the through hole is formed on the top plate 3. A supporting sleeve is rotatably arranged in the through hole. The supporting assembly is concentric with the supporting sleeve.

[0029] The supporting sleeve comprises a rotating ring 21, the rotating ring 21 is rotatably arranged in the through hole, and a top sleeve 13 is fixedly connected to the upper end of the rotating ring 21.

[0030] A fixed plate 15 is fixedly connected to the upper end of the support on one side of the supporting sleeve, and specifically, the fixed plate 15 is fixedly connected to the upper end of the top plate 3. An upper screw rod 16 is rotatably connected to the fixed plate 15, the axial direction of the upper screw rod 16 is parallel to the radial direction of the supporting sleeve, a moving plate 14 is threadedly connected to the upper screw rod 16, and the moving plate 14 is slidably connected to the upper end of the support. Specifically, the moving plate 14 is slidably connected to the top plate 3. An upper plate 19 is arranged above the moving plate 14, the upper plate 19 is connected to the moving plate 14 through an adjusting assembly, the adjusting assembly can adjust the height of the upper plate 19, and a heat preservation gun 20 is fixedly connected to the upper plate 19.

[0031] The adjusting assembly comprises a vertical adjusting screw rod 17, the adjusting screw rod 17 is rotatably connected to the upper plate 19, the adjusting screw rod 17 is threadedly connected to the moving plate 14, a vertical light rod 18 is fixedly connected to the lower end of the upper plate 19, and the light rod 18 is slidably connected to the moving plate 14.

[0032] The copper bar 25 is inserted into the wire slot of the copper bar rotor 22, the fixed copper ring 24 is sleeved on the rotating shaft of the copper bar rotor 22, and the welding end of the copper bar 25 is inserted into the insertion slot of the copper ring 24. Then the rotating shaft of the copper bar rotor 22 penetrates through the top sleeve 13 and the rotating ring 21, the height of the rotating disc 6 is adjusted by rotating the lower screw rod 5, the lower end of the rotating shaft of the copper bar rotor 22 is supported by the rotating disc 6, and the copper bar rotor 22 is kept concentric with the top sleeve 13 and the rotating disc 6.

[0033] The upper screw rod 16 and the adjusting screw rod 17 are rotated, so that the height and position of the heat preservation gun 20 on the upper plate 19 are adjusted, so that the flame sprayed from the heat preservation gun 20 can heat and preserve the welding end of the copper bar 25 in the copper ring 24 slot. After the heat preservation gun 20 heats and preserves the welding end of the copper bar 25 in the copper ring 24 slot, the silver-zinc welding rod is melted by the welding gun 23 to uniformly flow and fill the gap between the welding end of the copper bar 25 and the copper ring 24 slot.

[0034] When the copper bar rotor 22, the support sleeve and the rotating disc 6 rotate, the heat preservation gun 20 does not rotate with the copper bar rotor 22. Therefore, the heat preservation gun 20 can heat the welding end of the plurality of copper bars 25 of the copper bar rotor 22 during the rotation of the copper bar rotor 22, and the heat preservation gun 20 does not need to be frequently moved during the welding process, which can improve the welding efficiency.

[0035] The height and position of the heat preservation gun 20 can be adjusted, which can heat and preserve the welding end of the copper ring 24 and the copper bar 25 of the copper bar rotor 22 with different diameters, and has a wide range of applications.

[0036] The height of the rotating disc 6 can be adjusted, the rotating disc 6 can rotate, the rotating disc 6 can support copper bar rotors 22 with different lengths, has a wide range of applications, and can ensure smooth rotation of the copper bar rotor 22, thereby reducing labor intensity during the welding process.

[0037] Example two: on the basis of example one, referring to Figures 1-3 As shown in the figure, two clamping assemblies are arranged in the support above the support assembly, the two clamping assemblies are symmetrically arranged according to the axis of the support assembly, the clamping assembly is connected with the driving assembly, and the driving assembly can drive the two clamping assemblies to synchronously and at the same speed approach or move away from each other.

[0038] The clamping assembly comprises a connecting plate 9, a guard plate 10 is fixed to one side of the connecting plate 9 facing the center of the bottom plate 1, the front and rear sides of the guard plate 10 are bent towards the center of the bottom plate 1 and form bent portions, and universal balls 11 are installed on the opposite end faces of the two bent portions.

[0039] The driving assembly comprises a forward and reverse screw rod 7 rotatably arranged between the two support plates 2, the forward and reverse screw rod 7 is arranged transversely, the connecting plates 9 on both sides are respectively threadedly connected with the threaded portions on both sides of the forward and reverse screw rod 7, two support plates 2 on one side of the forward and reverse screw rod 7 are fixed with a transverse lower light rod 8, the lower light rod 8 penetrates through the connecting plate 9, the lower light rod 8 is slidably connected with the connecting plate 9, a motor 12 is fixed on any one of the support plates 2, and the output shaft of the motor 12 is fixedly connected with the forward and reverse screw rod 7 in a concentric manner.

[0040] After the rotating shaft of the copper bar rotor 22 penetrates the top sleeve 13 and the rotating ring 21, the motor 12 is started, the motor 12 drives the lead screw 7 to rotate, when the lead screw 7 rotates, the two connecting plates 9 are driven to make the two protective plates 10 close to each other, when the universal ball 11 on the two protective plates 10 are in contact with the outer edge of the rotating shaft of the copper bar rotor 22, the copper bar rotor 22 is righted. At this time, the copper bar rotor 22 is concentric with the supporting sleeve and the rotating disc 6. Under the action of the universal ball 11, the copper bar rotor 22 can keep rotating.

[0041] The clamping assembly can clamp and right the rotating shaft of the copper bar rotor 22 with different diameters, can ensure that the copper bar rotor 22 is concentric with the supporting sleeve and the rotating disc 6, and prevent the copper bar rotor 22 from rotating eccentrically. At the same time, it can ensure the smooth rotation of the copper bar rotor 22. In the process of rotating the copper bar rotor 22, the heat gun 20 can accurately heat and keep the welding end of the copper bar 25 in the copper ring 24 slot.

[0042] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning device for motor welding, comprising a support, a support assembly is rotatably arranged at the center of the lower end of the support, characterized in that, Two clamping assemblies are arranged in the bracket above the support assembly, the two clamping assemblies are symmetrically arranged according to the axis of the support assembly, the clamping assemblies are connected with the driving assembly, the driving assembly can drive the two clamping assemblies to approach or move away from each other synchronously and at the same speed, a through hole is formed in the upper end of the bracket, a support sleeve is rotatably arranged in the through hole, the support sleeve is concentric with the support assembly, a fixed plate (15) is fixed to the upper end of the bracket on one side of the support sleeve, an upper screw rod (16) is rotatably connected to the fixed plate (15), the axial direction of the upper screw rod (16) is parallel to the radial direction of the support sleeve, a moving plate (14) is threadedly connected to the upper screw rod (16), the moving plate (14) is slidably connected to the upper end of the bracket, an upper plate (19) is arranged above the moving plate (14), the upper plate (19) is connected with the moving plate (14) through an adjusting assembly, the adjusting assembly can adjust the height of the upper plate (19), and a heat preservation gun (20) is fixed to the upper plate (19).

2. The positioning device for motor welding according to claim 1, wherein The bracket comprises a bottom plate (1), two side plates (2) are fixed to the upper end of the bottom plate (1), the upper ends of the two side plates (2) are fixedly connected through a top plate (3), the through hole is formed in the top plate (3), the fixed plate (15) is fixed to the upper end of the top plate (3), and the moving plate (14) is slidably connected to the top plate (3).

3. The positioning device for welding of an electric machine according to claim 2, characterized in that, The support assembly comprises a fixed column (4) fixed to the center of the upper end of the bottom plate (1), a vertical lower screw rod (5) is threadedly connected to the upper end of the fixed column (4) in a concentric manner, and a rotating disc (6) is rotatably connected to the upper end of the lower screw rod (5) in a concentric manner.

4. The positioning device for welding of an electric machine according to claim 3, characterized in that, The lower screw rod (5) is threadedly connected with a locking nut.

5. The positioning device for welding of an electric machine according to claim 2, characterized in that, The clamping assembly comprises a connecting plate (9), a guard plate (10) is fixed to one side of the connecting plate (9) facing the center of the bottom plate (1), the front and back sides of the guard plate (10) are both bent towards the center of the bottom plate (1) and form bent portions, and universal balls (11) are mounted on the opposite end faces of the two bent portions.

6. The positioning device for welding of an electric machine according to claim 5, characterized in that, The driving assembly comprises a forward and reverse screw rod (7) rotatably arranged between the two side plates (2), the forward and reverse screw rod (7) is arranged in a transverse manner, the connecting plates (9) on the two sides are respectively threadedly connected with the threaded portions on the two sides of the forward and reverse screw rod (7), two side plates (2) on one side of the forward and reverse screw rod (7) are fixedly connected with a transverse lower light rod (8), the lower light rod (8) penetrates through the connecting plate (9), the lower light rod (8) is slidably connected with the connecting plate (9), and a motor (12) is fixed to any one side plate (2).

7. The positioning device for motor welding according to claim 2, wherein The support sleeve comprises a rotating ring (21), the rotating ring (21) is rotatably arranged in the through hole, and a top sleeve (13) is fixedly connected to the upper end of the rotating ring (21) in a concentric manner.

8. The positioning device for motor welding according to claim 1, wherein The adjusting assembly comprises a vertical adjusting screw rod (17), the adjusting screw rod (17) is rotatably connected with the upper plate (19), the adjusting screw rod (17) is threadedly connected with the moving plate (14), a vertical upper light rod (18) is fixed to the lower end of the upper plate (19), and the upper light rod (18) is slidably connected with the moving plate (14).

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