Automatic welding device for brush motor stator core

Abstract

The invention relates to the technical field of welding devices, in particular to an automatic welding device for a brush motor stator core, which comprises a rack, a blanking frame, a clamping seat and a laser transmitter, the supporting table is installed on the machine frame, the clamping base is connected to the supporting table in a sliding mode, a surrounding clamping mechanism is arranged on the supporting table, and the surrounding clamping mechanism is arranged on the outer side of a pile of stator iron cores in a sleeving mode, makes contact with the stator iron cores, generates radial thrust on the welding portions of the stator iron cores and inhibits the welding positions of the stator iron cores from being damaged in the laser welding process. Performing thermal deformation on the welding part of the stator core; the brush motor stator iron core is placed in the fixing frame, the sliding block on the fixing frame pushes the contact block, the contact block extrudes the areas on the two sides of the welding portion of the brush motor stator iron core, and outward deformation of the area around the welding portion of the brush motor stator iron core is restrained through extrusion; and meanwhile, the contact block increases heat dissipation of the brush motor stator iron core, and thermal deformation of the brush motor stator iron core is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding device, especially to an automatic welding device for brush motor stator core. BACKGROUND

[0002] The control motor for automobile steering wheel is the core power and control unit of vehicle steering system, which is widely used in electric power steering (EPS) and steer-by-wire system, and its performance directly determines the steering accuracy, driving stability and driving safety. The control motor for automobile steering wheel mainly undertakes the core function of converting the steering intention of the driver into precise mechanical action. The brush motor stator core is the key carrier of the magnetic circuit, and the welding quality directly determines the stability of the motor magnetic field, the operation precision and the service life. The stator core is usually composed of multiple silicon steel sheets, and the stator core and the mounting structure need to be fixed by welding to ensure the assembly strength and the integrity of the magnetic circuit. In the prior art, the stator cores are stacked together, and then pressure is applied to the upper and lower ends of the stack of stator cores to ensure that the stator cores are tightly fitted. Then the laser beam moves up and down to weld the stator cores. During the laser welding of the stator core, the high temperature generated during welding is transferred to the surrounding parts of the stator core, causing deformation around the welding part of the stator core, thereby affecting the welding effect of the stator core and causing limitations.

[0003] Therefore, we propose an automatic welding device for brush motor stator core. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides an automatic welding device for brush motor stator core, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an automatic welding device for brush motor stator core, comprising: a rack, a support table, a blanking frame, a clamping seat and a laser emitter; The support table is installed on the rack, the clamping seat is slidingly connected to the support table, a clamping electric push rod is connected between the clamping seat and the support table, a welding block is installed on the rack, a welding seat is slidingly connected to the welding block, a welding motor is fixedly connected to the welding block, an output end of the welding motor is fixedly connected to a screw rod which is threadedly matched with the welding seat, and the laser emitter is installed on the welding seat. The support table is provided with a surrounding clamping mechanism which is sleeved outside the stack of stator cores and is in contact with the stator cores to generate radial thrust on the welded parts of the stator cores and inhibit thermal deformation of the welded parts of the stator cores during laser welding.

[0006] Preferably, the surrounding clamping mechanism comprises a fixed frame, a contact block and a sliding block, the fixed frame is installed on the support table, the fixed frame is provided with sliding grooves and a through groove, a pair of the sliding grooves are located on both sides of the through groove, the sliding grooves are arranged in a spread shape, the sliding block is slidably connected in the sliding grooves, the contact block is installed on the sliding block, the fixed frame is threadedly connected with an extrusion screw, and the extrusion screw is rotatably connected with the sliding block.

[0007] By placing the brush motor stator core into the fixed frame, the sliding block on the fixed frame pushes the contact block to extrude the two side areas of the welded parts of the brush motor stator core, and the extrusion inhibits the outward deformation of the surrounding area of the welded parts of the brush motor stator core, while the contact block increases the heat dissipation of the brush motor stator core to reduce the thermal deformation of the brush motor stator core.

[0008] Preferably, the surrounding clamping mechanism further comprises a mounting cylinder and a rotating sleeve, the mounting cylinder is slidably connected to the support table, a lifting electric push rod is connected between the mounting cylinder and the support table, a telescopic block is slidably connected to the mounting cylinder, a telescopic electric push rod is connected between the telescopic block and the mounting cylinder, the rotating sleeve is installed on the telescopic block, and a rotating motor is fixedly connected to the telescopic block.

[0009] Preferably, a connecting block is rotatably connected to the telescopic block, the connecting block is rotatably connected with the rotating sleeve, and a pressure sensor is connected between the connecting block and the rotating sleeve.

[0010] By providing the mounting cylinder which is slidably connected to the support block, pushing the rotating sleeve on the extrusion screw by the telescopic block on the mounting cylinder, rotating the rotating sleeve by the rotating motor to twist the extrusion screw, and setting the pressure sensor between the connecting block and the rotating sleeve to detect the size of the force of the twisted extrusion screw, the contact block is prevented from excessively extruding the brush motor stator core.

[0011] Preferably, the contact block is slidably connected to the sliding block, and the contact block and the sliding block are connected by bolts.

[0012] Preferably, the rack is provided with a conveying belt on both sides.

[0013] Preferably, a push block is slidably connected to the support platform, a lowering block is slidably connected to the push block, a push motor is fixedly connected to the support platform, a lead screw that is threadedly engaged with the push block is fixedly connected to the output end of the push motor, and a lowering electric push rod is connected between the lowering block and the push block.

[0014] The beneficial effects of this invention are: 1. The present invention places the stator core of a brushed motor into a fixed frame, and the sliding block on the fixed frame pushes the contact block, so that the contact block squeezes the two sides of the welding part of the stator core of the brushed motor. The squeezing suppresses the outward deformation of the area around the welding part of the stator core of the brushed motor. At the same time, the contact block increases the heat dissipation of the stator core of the brushed motor and reduces the thermal deformation of the stator core of the brushed motor.

[0015] 2. The present invention provides an installation cylinder that slides vertically on a support block. A telescopic block on the installation cylinder pushes a rotating sleeve onto the extrusion screw. A rotating motor drives the rotating sleeve to rotate, twisting the extrusion screw. A pressure sensor is installed between the connecting block and the rotating sleeve to detect the magnitude of the force of twisting the extrusion screw, thereby preventing the contact block from excessively compressing the stator core of the brushed motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the structure of the mounting cylinder and the fixing frame in this invention; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 for Figure 3 Enlarged view of point C in the middle; Figure 6 This is a partial sectional view of the mounting cylinder and support platform in this invention; Figure 7 for Figure 6 Enlarged view of point D in the middle.

[0017] In the figure: 1, rack; 11, support table; 12, blanking frame; 13, clamping seat; 14, laser emitter; 15, clamping electric push rod; 16, welding block; 17, welding seat; 18, welding motor; 21, fixed frame; 22, contact block; 23, sliding block; 24, sliding groove; 25, through groove; 26, extrusion screw; 27, mounting cylinder; 28, rotating sleeve; 3, lifting electric push rod; 31, telescopic block; 32, telescopic electric push rod; 33, rotating motor; 34, connecting block; 35, pressure sensor; 36, conveying belt; 37, pushing block; 38, descending block; 39, pushing motor; 4, descending electric push rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Embodiment one: refer to the description attached Figures 1 to 7 An automatic welding device for a brush motor stator core, comprising: a rack 1, a support table 11, a blanking frame 12, a clamping seat 13 and a laser emitter 14; The support table 11 is installed on the rack 1, the clamping seat 13 is slidingly connected on the support table 11, a clamping electric push rod 15 is connected between the clamping seat 13 and the support table 11, a welding block 16 is installed on the rack 1, a welding seat 17 is slidingly connected on the welding block 16, a welding motor 18 is fixedly connected on the welding block 16, an output end of the welding motor 18 is fixedly connected with a screw rod which is in threaded cooperation with the welding seat 17, and the laser emitter 14 is installed on the welding seat 17; A surrounding clamping mechanism is arranged on the support table 11, the surrounding clamping mechanism is sleeved on the outside of a stack of stator cores and is in contact with the stator cores, generates a radial thrust on the welding position of the stator cores, and inhibits thermal deformation of the welding position of the stator cores during laser welding.

[0020] In the application, the surrounding clamping mechanism comprises a fixed frame 21, a contact block 22 and a sliding block 23, the fixed frame 21 is installed on the support table 11, the fixed frame 21 is provided with sliding grooves 24 and through grooves 25, a pair of sliding grooves 24 is located on both sides of the through grooves 25, the sliding grooves 24 are arranged in a spread shape, the sliding block 23 is slidably connected in the sliding grooves 24, the contact block 22 is installed on the sliding block 23, the fixed frame 21 is threadedly connected with an extrusion screw 26, and the extrusion screw 26 is rotationally connected with the sliding block 23.

[0021] In the application, after the brush motor stator core is placed in the fixed frame 21 and stacked together, the brush motor stator core and the fixed frame 21 are placed on the support table 11, then the extrusion screw 26 is rotated, the sliding block 23 and the contact block 22 are pushed to move towards the brush motor stator core and contact the brush motor stator core, the contact blocks 22 located on both sides of the through grooves 25 extrude both sides of the welding part of the brush motor stator core, then the clamping electric push rod 15 pushes the clamping seat 13 downwards, so that the clamping block on the clamping seat 13 extends into the fixed frame 21 and extrudes the brush motor stator core, then the welding motor 18 drives the corresponding screw rod to rotate, so that the welding seat 17 drives the laser emitter 14 to move upwards, the laser emitter 14 emits a high-energy laser beam to the brush motor stator core, the high-energy laser beam is located between the two contact blocks 22, the high-energy laser beam melts the brush motor stator core and makes the upper and lower adjacent brush motor stator cores fuse together, the contact blocks 22 extrude both sides of the laser welding part of the brush motor stator core, and the deformation of the two side areas of the welding part of the brush motor stator core is inhibited, at the same time, the contact blocks 22 are in contact with both sides of the welding part of the brush motor stator core, so that the heat dissipation of the brush motor stator core is increased and the thermal deformation of the brush motor stator core is reduced. In the application, the brush motor stator core is placed in the fixed frame 21, the sliding block 23 on the fixed frame 21 pushes the contact block 22, so that the contact block 22 extrudes both sides of the welding part of the brush motor stator core, the deformation of the surrounding area of the welding part of the brush motor stator core is inhibited, at the same time, the contact block 22 increases the heat dissipation of the brush motor stator core and reduces the thermal deformation of the brush motor stator core.

[0022] Example two: on the basis of example one, referring to the description Figures 1 to 7In the application, the surrounding clamping mechanism further comprises a mounting cylinder 27 and a rotating sleeve 28, the mounting cylinder 27 is connected to the support table 11 in a sliding manner, a lifting electric push rod 3 is connected between the mounting cylinder 27 and the support table 11, a telescopic block 31 is connected to the mounting cylinder 27 in a sliding manner, a telescopic electric push rod 32 is connected between the telescopic block 31 and the mounting cylinder 27, the rotating sleeve 28 is mounted on the telescopic block 31, and a rotating motor 33 is fixedly connected to the telescopic block 31.

[0023] In the application, the telescopic block 31 is rotatably connected with a connecting block 34, the connecting block 34 is rotatably connected with the rotating sleeve 28, and a pressure sensor 35 is connected between the connecting block 34 and the rotating sleeve 28.

[0024] In the application, the mounting cylinder 27 is connected to the support table 11 in a sliding manner, the lifting electric push rod 3 pushes the mounting cylinder 27 upwards, so that the rotating sleeve 28 on the mounting cylinder 27 is at the same height as the extrusion screw 26, then the telescopic electric push rod 32 pushes the telescopic block 31 and the rotating sleeve 28 outwards, so that the rotating sleeve 28 is sleeved on the outside of the extrusion screw 26, then the rotating motor 33 drives the rotating sleeve 28 and the extrusion screw 26 to rotate, so as to drive the sliding block 23 and the contact block 22 to move, then the telescopic block 31 is retracted into the mounting cylinder 27, and the mounting cylinder 27 returns to the original position downwards. In the application, the rotating motor 33 drives the rotating sleeve 28 to rotate through the connecting block 34, and the pressure sensor 35 can detect the force of the extrusion screw 26 during rotation, so that when the force exceeds a preset value, the rotating motor 33 stops rotating, thereby preventing the contact block 22 from excessively extruding the brush motor stator core. In the application, the mounting cylinder 27 is connected to the support table 11 in a sliding manner, the telescopic block 31 on the mounting cylinder 27 pushes the rotating sleeve 28 to be sleeved on the extrusion screw 26, the rotating motor 33 drives the rotating sleeve 28 to rotate and twist the extrusion screw 26, and the pressure sensor 35 is arranged between the connecting block 34 and the rotating sleeve 28 to detect the force of the twisted extrusion screw 26, thereby preventing the contact block 22 from excessively extruding the brush motor stator core.

[0025] In the application, the contact block 22 is connected to the sliding block 23 in a sliding manner, and the contact block 22 and the sliding block 23 are connected through bolts.

[0026] In the application, the rack 1 is provided with a conveying belt 36 on both sides.

[0027] In the present application, the supporting table 11 is slidably connected with a pushing block 37, the pushing block 37 is slidably connected with a descending block 38, the supporting table 11 is fixedly connected with a pushing motor 39, the output end of the pushing motor 39 is fixedly connected with a screw rod which is threadedly matched with the pushing block 37, and the descending block 38 is connected with the pushing block 37 through a descending electric push rod 4.

[0028] In the present application, the sliding block 23 is slidably connected with the contact block 22, the length of the contact block 22 extending out of the sliding block 23 can be adjusted by loosening the bolt on the sliding block 23, so that when the welding position of the brush motor stator core is in a stepped shape, two contact blocks 22 extending out of the sliding block 23 by different lengths can be in contact with the welding position, so that the present application can be applied to brush motor stator cores with stepped edge shapes, and the use range of the present application is improved. In the present application, the transmission belt 36 is arranged on both sides of the rack 1, the fixed frame 21 is placed on the transmission belt 36, after the fixed frame 21 is transmitted to the lower side of the discharging frame 12, the brush motor stator core falls into the fixed frame 21 through the transmission frame, then the transmission belt 36 transmits the fixed frame 21 to the side of the supporting table 11, the descending block 38 moves downward under the pushing of the descending electric push rod 4, the pushing motor 39 drives the corresponding screw rod to rotate, so that the pushing block 37 moves with the descending block 38, so that the descending block 38 pushes the fixed frame 21 and the brush motor stator core to the supporting table 11 for welding, after the welding is completed, the fixed frame 21 and the brush motor stator core move to the right side of the transmission belt 36 under the pushing of the fixed frame 21 and the brush motor stator core on the left side, so that continuous welding is realized.

[0029] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application; the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for a brush motor stator core, characterized by: Include: Frame (1), support table (11), blanking frame (12), clamping seat (13) and laser emitter (14); The support table (11) is installed on the frame (1), the clamping seat (13) is slidably connected to the support table (11), a clamping electric push rod (15) is connected between the clamping seat (13) and the support table (11), a welding block (16) is installed on the frame (1), a welding seat (17) is slidably connected to the welding block (16), a welding motor (18) is fixedly connected to the welding block (16), a screw rod threadedly matched with the welding seat (17) is fixedly connected to the output end of the welding motor (18), and the laser emitter (14) is installed on the welding seat (17). The support table (11) is provided with a surrounding clamping mechanism, which is sleeved outside a stack of stator cores and in contact with the stator cores to generate radial thrust on the welding parts of the stator cores and inhibit thermal deformation of the welding parts of the stator cores during laser welding.

2. The apparatus for automatic welding of a stator core of a brush motor according to claim 1, characterized in that: The surrounding clamping mechanism comprises a fixed frame (21), a contact block (22) and a sliding block (23), the fixed frame (21) is installed on the support table (11), the fixed frame (21) is provided with a sliding groove (24) and a through groove (25), a pair of sliding grooves (24) are located on both sides of the through groove (25), a pair of sliding grooves (24) are arranged in a spread shape, the sliding block (23) is slidably connected in the sliding groove (24), the contact block (22) is installed on the sliding block (23), the fixed frame (21) is threadedly connected with an extrusion screw rod (26), and the extrusion screw rod (26) is rotatably connected with the sliding block (23).

3. An apparatus for automatic welding of a stator core of a brush motor according to claim 2, characterized in that: The surrounding clamping mechanism further comprises a mounting cylinder (27) and a rotating sleeve (28), the mounting cylinder (27) is slidably connected to the support table (11) in an up-down manner, a lifting electric push rod (3) is connected between the mounting cylinder (27) and the support table (11), a telescopic block (31) is slidably connected to the mounting cylinder (27), a telescopic electric push rod (32) is connected between the telescopic block (31) and the mounting cylinder (27), the rotating sleeve (28) is installed on the telescopic block (31), and a rotating motor (33) is fixedly connected to the telescopic block (31).

4. The apparatus for automatic welding of a stator core of a brush motor according to claim 3, characterized in that: A connecting block (34) is rotatably connected to the telescopic block (31), the connecting block (34) is rotatably connected with the rotating sleeve (28), and a pressure sensor (35) is connected between the connecting block (34) and the rotating sleeve (28).

5. An apparatus for automatic welding of a stator core of a brush motor according to claim 4, characterized in that: The contact block (22) is slidably connected to the sliding block (23), and the contact block (22) and the sliding block (23) are connected by bolts.

6. An apparatus for automatic welding of a stator core of a brush motor according to claim 5, characterized in that: Transmission belts (36) are arranged on both sides of the frame (1).

7. An apparatus for automatic welding of a stator core of a brush motor according to claim 6, characterized in that: The support table (11) is slidably connected with a pushing block (37), the pushing block (37) is slidably connected with a descending block (38), the support table (11) is fixedly connected with a pushing motor (39), the output end of the pushing motor (39) is fixedly connected with a screw rod which is threadedly matched with the pushing block (37), and the descending block (38) and the pushing block (37) are connected with a descending electric push rod (4).

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