Motor commutator spot welding equipment

Abstract

The invention relates to motor commutator spot welding equipment which comprises a base, a conveying line for conveying incoming materials and outputting a rotor subjected to spot welding is arranged on the base, a multi-spot welding mechanism is arranged on the base, and the multi-spot welding mechanism comprises an angle positioning mechanism for positioning the angle of a commutator on the rotor and a spot welding mechanism for spot welding multiple positions at the same time. The base is provided with a feeding mechanism for conveying the rotor on the angle positioning mechanism to the spot welding mechanism, the base is provided with a defective product recycling station, the base is further provided with a feeding and discharging mechanism, the position, at the output end of the conveying line, of the base is provided with a cooling mechanism located above the conveying line, and the angle of a commutator on the rotor is positioned through the angle positioning mechanism; and the feeding and discharging mechanism is used for feeding and discharging among the conveying line, the welding mechanism and the defective product recycling station, so that automatic spot welding is achieved, the spot welding mechanism is used for spot welding a plurality of grooves in the commutator at the same time, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of motor assembly and processing, and more specifically to a spot welding device for a motor commutator. Background Art

[0002] The spot welding of the motor commutator is a key process in the motor production process. The motor commutator spot welding machine is divided into two types: manual spot welding machine and automatic spot welding machine. The manual spot welding machine manually places the rotor on a positioning block to weld the hook groove of the commutator on the rotor, then manually removes the rotor and rotates it and places it on the positioning block to position the next hook groove, and repeats this process. This method requires manual operation, has a low degree of automation, and the welding quality is affected by human factors and is unstable. The automatic spot welding machine usually uses a single welding head after placing the rotor, rotates the rotor, and spot welds all the hook grooves on the commutator. The spot welding takes a long time, has low welding efficiency, and affects production efficiency. Summary of the invention

[0003] In view of the above-mentioned defects in the prior art, a motor commutator spot welding device is provided.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a motor commutator spot welding device, including a base, a conveyor line for conveying incoming materials and outputting spot-welded rotors is arranged on the base, a multi-spot welding mechanism is arranged on the base, the multi-spot welding mechanism includes an angle positioning mechanism for positioning the angle of the commutator on the rotor and a spot welding mechanism for spot welding multiple grooves on the commutator at the same time, a feeding mechanism for conveying the rotor on the angle positioning mechanism to the spot welding mechanism is arranged on the base, a defective product recovery station is arranged on the base, and a loading and unloading mechanism for loading and unloading materials between the conveyor line, the multi-spot welding mechanism and the defective product recovery station is also arranged on the base, and a cooling mechanism located above the conveyor line is arranged at the output end of the conveyor line.

[0005] Preferably, the feeding mechanism includes a first bracket, a slide plate and a first cylinder, the first bracket is arranged on the base, the spot welding mechanism is arranged on the first bracket, a slide rail is arranged on the first bracket, the slide plate is slidably arranged on the slide rail, the first cylinder is arranged on the first bracket and drives the slide plate to slide, the angle positioning mechanism is arranged on the slide plate, the first cylinder drives the slide plate to transport the angle positioning mechanism to the position of the spot welding mechanism, and the slide plate is provided with a driving device for driving the angle positioning mechanism to rotate.

[0006] Preferably, the spot welding mechanism includes a linear slide, a second bracket and four spot welding heads, the linear slide is vertically arranged on the first bracket, the second bracket is arranged on the linear slide, the four spot welding heads are circumferentially slidably arranged on the second bracket at equal intervals, and the second bracket is provided with a driving mechanism for driving the four spot welding heads to move closer or farther synchronously.

[0007] Preferably, the driving mechanism includes a driving box, a first motor, four screw rods and four bevel gears, the driving box is arranged on the second bracket, a mounting block is arranged at the center of the bottom surface of the driving box, the four screw rods are arranged in the driving box at equal intervals in the circumferential direction, one end of the screw rod is rotatably connected to the mounting block, and the other end of the screw rod is rotatably connected to the inner side wall of the driving box, the first motor is arranged on the outer side wall of the driving box, the first motor drives any screw rod to rotate, the four bevel gears are arranged on the four screw rods one by one, and the bevel gears are meshed with any adjacent bevel gears, each of the screw rods is threadedly connected with a moving block, the moving block passes through the bottom surface of the driving box, the four spot welding heads are arranged at one end of the corresponding moving block passing through the driving box, four strip through holes are arranged on the bottom surface of the driving box, and the four moving blocks are matched and slid in the corresponding strip through holes.

[0008] Preferably, the angle positioning mechanism includes a supporting jig for supporting the rotor and a detection sensor for detecting the angle of the commutator on the rotor, the supporting jig is rotatably arranged on a slide, the driving device is a second motor, the second motor drives the supporting jig to rotate, a third bracket is arranged on the slide, the second motor is arranged on the third bracket, and the detection sensor is arranged on the first bracket.

[0009] Preferably, the loading and unloading mechanism comprises an XZ two-axis mobile platform and a clamp, wherein the XZ two-axis mobile platform is arranged on a base, the XZ two-axis mobile platform is a two-axis mobile platform of a gantry-type structure, and the clamp is arranged on the XZ two-axis mobile platform.

[0010] Preferably, the cooling mechanism includes a hood and multiple fans, the hood is arranged on a base, the hood also covers the discharge end of the conveyor line, the multiple fans are arranged on the top surface of the hood, and the multiple fans are arranged at equal intervals along the conveying direction of the conveyor line.

[0011] Preferably, the conveyor line is a chain conveyor line.

[0012] A method for core feeding and commutator assembly, the method comprising the following steps:

[0013] S101, the loading and unloading mechanism conveys the rotor on the conveyor line to the angle positioning mechanism, and the angle positioning mechanism positions the angle of the commutator on the rotor.

[0014] S102, the feeding mechanism conveys the rotor after the commutator is positioned to the spot welding mechanism, and the spot welding mechanism spot welds the grooves at multiple positions on the commutator at the same time.

[0015] S103, the loading and unloading mechanism transports the rotors with qualified spot welding to the conveyor line, and the loading and unloading mechanism transports the rotors with unqualified spot welding to the defective product recovery station.

[0016] S104, the conveyor line conveys the spot-welded rotor to the next processing station. When the spot-welded rotor on the conveyor line passes through a cooling mechanism, the cooling mechanism cools the spot-welded rotor.

[0017] The beneficial effects of the present invention are as follows: the angle of the commutator on the rotor is positioned by an angle positioning mechanism, so that the spot welding mechanism is aligned with the groove of the commutator, thereby facilitating spot welding and improving the accuracy and quality of spot welding. At the same time, the loading and unloading mechanism loads and unloads materials between the conveyor line, the welding mechanism and the defective product recovery station, thereby realizing automatic spot welding, and the spot welding mechanism spot welds multiple grooves on the commutator at the same time, reducing the time used for spot welding and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall top view structure of an embodiment of the present invention;

[0019] Figure 2 is a schematic diagram of a top view of a multi-spot welding mechanism according to an embodiment of the present invention;

[0020] Figure 3 is a schematic side view of the structure of a multi-spot welding mechanism according to an embodiment of the present invention;

[0021] Figure 4 is a schematic structural diagram of a spot welding mechanism according to an embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure inside the drive box of an embodiment of the present invention.

[0023] Figure numerals: 1 base, 2 conveyor line, 3 feeding mechanism, 30 first bracket, 31 slide plate, 32 first cylinder, 33 slide rail, 34 driving device, 35 third bracket, 4 angle positioning mechanism, 40 bearing fixture, 41 detection sensor, 5 spot welding mechanism, 50 linear slide, 51 second bracket, 52 spot welding head, 6 driving mechanism, 60 driving box, 61 strip through hole, 62 first motor, 63 screw rod, 64 bevel gear, 65 mounting block, 66 moving block, 7 defective product recovery station, 8 loading and unloading mechanism, 80XZ two-axis moving platform, 81 clamping claw, 9 cooling mechanism, 90 wind hood, 91 fan. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be clearly and completely described in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention. In addition, the directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the present invention, rather than indicating or implying the orientation that the present invention must have, and therefore cannot be understood as limitations on the present invention.

[0025] Embodiments of the present invention Figures 1 to 5 As shown in, a motor commutator spot welding device includes a base 1, and a conveyor line 2 for conveying incoming materials and outputting a spot-welded rotor is arranged on the base 1. The conveyor line 2 is located on the rear side of the top surface of the base 1, the right end of the conveyor line 2 is the input end, and the left end of the conveyor line 2 is the output end. The conveyor line 2 is a chain conveyor line. A multi-spot welding mechanism is arranged on the base 1, and the multi-spot welding mechanism is located on the top surface of the base 1 in front of the conveyor line 2. The multi-spot welding mechanism is also located near the input end of the conveyor line 2. The multi-spot welding mechanism includes an angle positioning mechanism 4 for positioning the angle of the commutator on the rotor and a spot welding mechanism 5 for simultaneously spot welding multiple grooves on the commutator. The angle positioning mechanism 4 and the spot welding mechanism 5 are arranged on the top surface of the base 1 from back to front in sequence, the base 1 is provided with a feeding mechanism 3 for conveying the rotor on the angle positioning mechanism 4 to the spot welding mechanism 5, the base 1 is provided with a defective product recovery station 7, the defective product recovery station 7 is located at the front side of the multi-spot welding mechanism on the top surface of the base 1, that is, the multi-spot welding mechanism is located between the conveyor line 2 and the defective product recovery station 7, the base is also provided with a loading and unloading mechanism 8 for loading and unloading between the conveyor line 2, the multi-spot welding mechanism and the defective product recovery station 7, the base 1 is provided with a cooling mechanism 9 located above the conveyor line 2 at the output end of the conveyor line 2, that is, the cooling mechanism 9 is located just above the left end of the conveyor line 2.

[0026] Further improvements, such as Figure 1 and Figure 2As shown in, the feeding mechanism 3 includes a first bracket 30, a slide plate 31 and a first cylinder 32. The first bracket 30 is arranged on the base 1. The first bracket 30 includes a rectangular top plate and two supporting feet. The two supporting feet are correspondingly arranged on the front and rear sides of the bottom surface of the top plate. The spot welding mechanism 5 is arranged on the first bracket 30. The first bracket 30 is provided with a slide rail 33. Preferably, two slide rails 33 are provided. The two slide rails 33 are arranged on the top surface of the top plate at intervals on the left and right. The two slide rails 33 extend in the front and rear directions. The slide plate 31 is slidably arranged on the slide rail 33. Slide blocks are slidably arranged on the two slide rails 33. The left and right sides of the bottom surface of the slide plate 31 The side correspondence is connected with two sliders, that is, the slider 31 is slidably arranged on two slide rails 33 through two sliders, the first cylinder 32 is arranged on the first bracket 30 and drives the slider 31 to slide, the first cylinder 32 is located at the front position on the top surface of the top plate of the first bracket 30, and the output end of the first cylinder 32 is connected with the front end of the slider 31, the angle positioning mechanism 4 is arranged on the slider 31, and the spot welding mechanism 5 is located at the position of the first bracket 30 close to the front side, the first cylinder 32 drives the slider 31 to transport the angle positioning mechanism 4 to the position of the spot welding mechanism 5, and the slider 31 is provided with a driving device 34 for driving the angle positioning mechanism 4 to rotate.

[0027] Further improvements, such as Figures 3 to 5 As shown in, the spot welding mechanism 5 includes a linear slide 50, a second bracket 51 and four spot welding heads 52, the linear slide 50 is vertically arranged on the first bracket 30, the linear slide 50 is located on the top surface of the top plate of the first bracket 30 near the front side, the linear slide 50 is also located on the right side of the two slide rails 33, the second bracket 51 is arranged on the linear slide 50, the second bracket 51 includes a vertical connecting plate and a horizontal plate connected to the linear slide 50, the connecting plate is arranged on the linear slide 50, the horizontal plate and the connecting plate form a "7"-shaped structure, the horizontal plate extends to the left side of the connecting plate, the connecting plate and the horizontal plate are integrally formed, preferably, reinforcing ribs are arranged between the connecting plate and the horizontal plate, so as to improve the strength of the second bracket 51, the four spot welding heads 52 are circumferentially equidistantly slidably arranged on the second bracket 51, the four spot welding heads 52 are slidably arranged below the horizontal plate, the second bracket 51 is provided with a driving mechanism 6 for driving the four spot welding heads 52 to approach or move away synchronously, and the driving mechanism 6 is arranged on the top surface of the horizontal plate.

[0028] Further improvements, such as Figures 3 to 5As shown in, the driving mechanism 6 includes a driving box 60, a first motor 62, four screw rods 63 and four bevel gears 64, the driving box 60 is arranged on the second bracket 51, the driving box 60 is a hollow rectangular structure, the driving box 60 is located on the top surface of the horizontal plate, preferably, the top surface of the horizontal plate is the bottom surface of the driving box 60, a mounting block 65 is arranged at the center of the bottom surface of the driving box 60, the mounting block 65 is a rectangular structure, the four screw rods 63 are arranged in the driving box 60 at equal intervals in the circumferential direction, one end of the screw rod 63 is rotatably connected to the mounting block 65, and the other end of the screw rod 63 is rotatably connected to the inner side wall of the driving box 60, that is, one end of the four screw rods 63 is rotatably connected to the four inner side walls of the driving box 60 correspondingly, and the other end of the four screw rods 63 is rotatably connected to the four side walls of the mounting block 65, preferably, the mounting block 65 is integrally formed with the horizontal plate of the second bracket 51, and the mounting block 65 is also provided with an avoidance through hole for avoiding the rotating shaft on the rotor, the first motor 62 is arranged On the outer wall of the drive box 60, the first motor 62 drives any one of the screw rods 63 to rotate. The first motor 62 is located on the right side wall of the drive box 60. The output end of the first motor 62 is connected to the right end of the screw rod 63 on the right side. The four bevel gears 64 are arranged on the four screw rods 63 in a one-to-one correspondence. The bevel gears 64 are meshed with any adjacent bevel gears 64. Each of the screw rods 63 is threadedly connected with a moving block 66, and the moving block 66 passes through the bottom surface of the drive box 60. The four spot welding heads 52 are arranged on one end of the corresponding moving block 66 passing through the drive box 60. Four strip through holes 61 are arranged on the bottom surface of the drive box 60. The four moving blocks 66 are matched and slidably arranged in the corresponding strip through holes 61. The four spot welding heads 52 spot weld the four grooves on the commutator at the same time, which improves the production efficiency. During spot welding, the commutator is subjected to force in four directions at the same time, so that the rotor is subjected to force evenly and will not bend. No additional structure is required to offset the pressure of the spot welding head 52 on the rotor during spot welding.

[0029] Further improvements, such as Figure 2 and Figure 3 As shown in, the angle positioning mechanism 4 includes a supporting fixture 40 for supporting the rotor and a detection sensor 41 for detecting the angle of the commutator on the rotor, the supporting fixture 40 is rotatably set on the slide plate 31, the driving device 34 is a second motor, the second motor drives the supporting fixture 40 to rotate, a third bracket 35 is arranged on the slide plate 31, the top plate of the first bracket 30 is provided with a top plate through hole extending along the slide rail 33 at a position between the two slide rails 33, the third bracket 35 is arranged on the bottom surface of the slide plate 31, the third bracket 35 extends out of the bottom surface of the top plate from the top plate through hole, the second motor is arranged on the third bracket 35, the detection sensor 41 is arranged on the first bracket 30, and a fourth bracket located on the right side of the two slide rails 33 is arranged on the top surface of the top plate of the first bracket 30 near the rear side, and the detection sensor 41 is arranged on the fourth bracket.

[0030] Further improvements, such as Figure 1 As shown in the figure, the loading and unloading mechanism 8 includes an XZ two-axis mobile platform 80 and a clamp 81. The XZ two-axis mobile platform 80 is arranged on the base 1. The XZ two-axis mobile platform 80 is a two-axis mobile platform with a gantry-type structure. The clamp 81 is arranged on the XZ two-axis mobile platform 80.

[0031] Further improvements, such as Figure 1 As shown in the figure, the cooling mechanism 9 includes a hood 90 and a plurality of fans 91. The hood 90 is arranged on the base 1. The hood 90 also covers the discharge end of the conveyor line 2, that is, the hood 90 covers the left end of the conveyor line 2. The plurality of fans 91 are arranged on the top surface of the hood 90. The plurality of fans 91 are arranged at equal intervals along the conveying direction of the conveyor line 2. Three fans 91 are provided, that is, three fans 91 are arranged at equal intervals in the left and right directions on the top surface of the hood 90. The rotor after spot welding is cooled by the fans 91, thereby facilitating subsequent processing.

[0032] A method for core feeding and commutator assembly, the method comprising the following steps:

[0033] S101, the loading and unloading mechanism 8 conveys the rotor on the conveyor line 2 to the angle positioning mechanism 4, and the angle positioning mechanism 4 positions the angle of the commutator on the rotor.

[0034] S102, the feeding mechanism 3 conveys the rotor after the commutator is positioned to the spot welding mechanism 5, and the spot welding mechanism 5 spot welds the grooves at multiple positions on the commutator at the same time.

[0035] S103, the loading and unloading mechanism 8 conveys the rotors with qualified spot welding to the conveyor line 2, and the loading and unloading mechanism 8 conveys the rotors with unqualified spot welding to the defective product recovery station 7.

[0036] S104, the conveyor line 2 conveys the spot-welded rotor to the next processing station. When the spot-welded rotor on the conveyor line 2 passes through the cooling mechanism 9, the cooling mechanism 9 cools the spot-welded rotor.

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A motor commutator spot welding device, comprising a base; characterized in that: The base is provided with a conveyor line for conveying incoming materials and outputting the rotor after spot welding; the base is provided with a multi-spot welding mechanism; the multi-spot welding mechanism includes an angle positioning mechanism for positioning the angle of the commutator on the rotor and a spot welding mechanism for spot welding multiple grooves on the commutator at the same time; the base is provided with a feeding mechanism for conveying the rotor on the angle positioning mechanism to the spot welding mechanism; the base is provided with a defective product recovery station; the base is also provided with a loading and unloading mechanism for loading and unloading materials between the conveyor line, the multi-spot welding mechanism and the defective product recovery station; the base is provided with a cooling mechanism located above the conveyor line at the output end of the conveyor line.

2. A motor commutator spot welding device according to claim 1, characterized in that: The feeding mechanism comprises a first bracket, a slide plate and a first cylinder; the first bracket is arranged on the base; the spot welding mechanism is arranged on the first bracket; a slide rail is arranged on the first bracket; the slide plate is slidably arranged on the slide rail; the first cylinder is arranged on the first bracket and drives the slide plate to slide; The angle positioning mechanism is arranged on the slide plate; the first cylinder drives the slide plate to transport the angle positioning mechanism to the position of the spot welding mechanism; and a driving device for driving the angle positioning mechanism to rotate is arranged on the slide plate.

3. A motor commutator spot welding device according to claim 2, characterized in that: The spot welding mechanism includes a linear slide, a second bracket and four spot welding heads; the linear slide is vertically arranged on the first bracket; the second bracket is arranged on the linear slide; the four spot welding heads are circumferentially slidably arranged on the second bracket at equal intervals; the second bracket is provided with a driving mechanism for driving the four spot welding heads to move closer or farther synchronously.

4. A motor commutator spot welding device according to claim 3, characterized in that: The driving mechanism includes a driving box, a first motor, four screw rods and four bevel gears; the driving box is arranged on the second bracket; a mounting block is arranged at the center of the bottom surface of the driving box; the four screw rods are arranged in the driving box at equal intervals in the circumferential direction; one end of the screw rod is rotatably connected to the mounting block; the other end of the screw rod is rotatably connected to the inner side wall of the driving box; the first motor is arranged on the outer side wall of the driving box; the first motor drives any screw rod to rotate; the four bevel gears are arranged on the four screw rods one by one; the bevel gears are meshed with any adjacent bevel gears; a moving block is threadedly connected to each of the screw rods; the moving block passes through the bottom surface of the driving box; the four spot welding heads are arranged at one end of the corresponding moving block passing through the driving box; four strip through holes are arranged on the bottom surface of the driving box; the four moving blocks are matched and slid in the corresponding strip through holes.

5. The motor commutator spot welding device according to claim 2, characterized in that: The angle positioning mechanism includes a supporting fixture for supporting the rotor and a detection sensor for detecting the angle of the commutator on the rotor; the supporting fixture is rotatably arranged on a slide; the driving device is a second motor; the second motor drives the supporting fixture to rotate; a third bracket is arranged on the slide; the second motor is arranged on the third bracket; the detection sensor is arranged on the first bracket.

6. The motor commutator spot welding device according to claim 1, characterized in that: The loading and unloading mechanism comprises an XZ two-axis moving platform and a clamp; the XZ two-axis moving platform is arranged on a base; the XZ two-axis moving platform is a two-axis moving platform of a gantry-type structure; the clamp is arranged on the XZ two-axis moving platform.

7. The motor commutator spot welding device according to claim 1, characterized in that: The cooling mechanism includes a hood and multiple fans; the hood is arranged on a base, and the hood also covers the discharge end of the conveyor line; the multiple fans are arranged on the top surface of the hood; the multiple fans are arranged at equal intervals along the conveying direction of the conveyor line.

8. The motor commutator spot welding device according to claim 1, characterized in that: The conveyor line is a chain conveyor line.

9. A core feeding and commutator assembly method, based on a motor commutator spot welding device according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: S101, the loading and unloading mechanism conveys the rotor on the conveyor line to the angle positioning mechanism, and the angle positioning mechanism positions the angle of the commutator on the rotor. S102, the feeding mechanism conveys the rotor after the commutator is positioned to the spot welding mechanism, and the spot welding mechanism spot welds the grooves at multiple positions on the commutator at the same time. S103, the loading and unloading mechanism transports the rotors with qualified spot welding to the conveyor line, and the loading and unloading mechanism transports the rotors with unqualified spot welding to the defective product recovery station. S104, the conveyor line conveys the spot-welded rotor to the next processing station. When the spot-welded rotor on the conveyor line passes through a cooling mechanism, the cooling mechanism cools the spot-welded rotor.

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