Laser welding equipment for armature connecting flat wire for automobile driving motor

Abstract

The invention relates to the technical field of automobile driving motor welding, in particular to laser welding equipment for an armature connecting flat wire for an automobile driving motor. The device comprises a shell device, a laser head assembly is arranged on the upper side of the shell device, an armature assembly is arranged below the laser head assembly, an upper fixing assembly is arranged between the laser head assembly and the armature assembly, and a lower fixing assembly is arranged on the side, away from the laser head assembly, of the upper fixing assembly. A connecting assembly is arranged on the side, away from the laser head assembly, of the lower fixing assembly, a transmission assembly is arranged in the connecting assembly, and a ratchet wheel assembly is arranged in the transmission assembly. The welding ends of the two flat wires are tightly extruded to be close to each other through the clamping plates which are arranged in the square holes and are wide in top and narrow in bottom; the base is pressed downwards through the pressing rod, so that the frustum-shaped top ring extrudes one end, located in the taper hole, of the connecting rod, and the other end of the connecting rod expands outwards and extrudes the inner side wall of the iron core. The input motor drives the rotating shaft to rotate clockwise, so that the base drives the iron core to rotate clockwise.

Description

Technical Field

[0001] The invention relates to the technical field of automobile drive motor welding, in particular to a laser welding device for connecting armature flat wires used in automobile drive motors. Background Art

[0002] Flat wire motor technology uses enameled wire with rectangular cross-section, commonly known as "flat wire". This design makes the arrangement of conductors in the armature slot more compact, effectively reducing the gaps between conductors. This close arrangement not only reduces the thermal resistance between the armature winding and the core, improves the heat dissipation efficiency, but also increases the copper area of ​​the conductor in the slot by significantly improving the slot fill rate, thereby enhancing the output capacity of the motor. Flat wire armature technology has become the mainstream trend in the design of new energy vehicle drive motors. In the winding of the flat wire motor core, multiple flat wires are first inserted into the core, and then the ends of the flat wires are connected by welding. There are several groups of flat wire joints arranged in a circle around the core axis on the core. When welding, the copper wire joints in the radial direction need to be welded in pairs. Due to the large number of connecting wires involved in the winding, there are also many joints that need to be welded. The welding tools used for welding the flat wire core currently include clamping conductive tools and rotating clamping tools. Among them, when a clamping conductive tool is used, each time one point or a row of two to three welding points is clamped for welding, which takes a lot of time and has low production efficiency; when a rotating jaw tool is used, the flat wire is clamped by rotating each radial jaw, but the flat wire cannot be effectively clamped in the radial direction of the iron core, which easily leads to the two flat wires being separated from each other due to the elastic deformation of the metal during welding, thereby affecting the quality of welding. In summary, the current welding equipment for armature connecting flat wires cannot ensure good welding quality while maintaining welding efficiency. Summary of the invention

[0003] The object of the present invention is to provide a laser welding device for connecting flat wires of armatures for automobile drive motors, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, a laser welding device for connecting flat wires of an armature for an automobile drive motor is provided, comprising a shell device, a laser head assembly is arranged on the upper side of the shell device, an armature assembly is arranged below the laser head assembly, the armature assembly is composed of an iron core and a flat wire, the laser head assembly welds the flat wire on the armature assembly, an upper fixed assembly is arranged between the laser head assembly and the armature assembly, the upper fixed assembly clamps and fixes the flat wire in the armature assembly, a lower fixed assembly is arranged on the side of the upper fixed assembly away from the laser head assembly, the lower fixed assembly supports the iron core and squeezes the inner wall of the iron core at the same time, a connecting assembly is arranged on the side of the lower fixed assembly away from the laser head assembly, the lower fixed assembly squeezes the connecting assembly downward to drive the lower fixed assembly to squeeze the inner wall of the iron core, a transmission assembly is arranged inside the connecting assembly, the transmission assembly rotates to drive the upper fixed assembly to move downward, the upper fixed assembly moves downward to clamp the flat wire and squeeze the lower fixed assembly downward.

[0005] As a further improvement of the present technical solution, a ratchet assembly is provided inside the transmission assembly, and the ratchet assembly controls the transmission assembly. When the transmission assembly rotates counterclockwise, the ratchet assembly drives the upper fixed assembly to move downward. When the transmission assembly rotates clockwise, the ratchet assembly drives the connecting assembly to rotate. The connecting assembly and the lower fixed assembly are close to each other on one side, and the rotation of the connecting assembly drives the iron core on the lower fixed assembly to rotate.

[0006] As a further improvement of the present technical solution, the housing device includes a shell, which is arranged in a slot shape with an opening upward, a slot plate is fixedly installed in the slot of the shell, the slot plate is arranged on the side of the armature assembly away from the laser head assembly, the top ends of the two side walls of the shell are fixedly connected with male slide rails, a female slide rail is slidably connected between the two male slide rails, the laser head assembly is movably installed on the female slide rail, an input motor is installed at the bottom of the shell, and the rotating shaft of the input motor passes through the slot plate.

[0007] As a further improvement of the present technical solution, the upper fixed component includes a hole plate, which is arranged between the laser head assembly and the iron core. A plurality of square holes are opened on the hole plate, and the square holes are sleeved on the flat wire of the armature assembly. Clamps are fixedly installed on the two side walls of the square holes. The clamps are arranged in a shape that is wide at the top and narrow at the bottom. When the clamps are moved downward, the two flat wires are clamped. A plurality of downward pressure rods are fixedly connected to the side of the hole plate away from the laser head assembly. A rotating rod is rotatably installed at the center of the hole plate. The downward pressure rod and the rotating rod are arranged inside the iron core, and the rotating rod drives the hole plate to move downward.

[0008] As a further improvement of the present technical solution, a base is provided at the end of the lower pressure rod away from the orifice plate, and a conical hole which is narrow at the top and wide at the bottom is provided at the side of the base away from the orifice plate. A plurality of connecting rods are hinged on the side wall of the base away from the orifice plate. The connecting rods are arranged in an L shape, and one end of the connecting rod passes through the side wall of the base and extends into the conical hole. A pressure block is hinged at the end of the connecting rod away from the conical hole.

[0009] As a further improvement of the present technical solution, a plurality of wedge-shaped grooves are provided on the side of the base away from the orifice plate, a clamping plate is provided on the side of the base away from the orifice plate, a plurality of wedge plates are hingedly connected to the side of the clamping plate close to the base, the wedge plates are clamped in the wedge-shaped grooves when they rotate clockwise, and are disengaged from the wedge-shaped grooves when they rotate clockwise or counterclockwise, a plurality of wedge slits are provided on the inner side wall of the clamping plate, rollers are provided in the wedge slits, the rollers and the side walls of the clamping plate are connected by transverse springs, a top ring is fixedly installed on the side of the clamping plate close to the orifice plate, the top ring is configured as a cone with a narrow upper part and a wide lower part, and when the base squeezes the top ring downward, the side wall of the cone squeezes the connecting rod in the conical hole to cause the connecting rod to swing.

[0010] As a further improvement of the present technical solution, a friction cylinder is arranged in the clamping plate, and one end of the friction cylinder close to the orifice plate is rotatably connected to the rotating rod. The friction cylinder drives the orifice plate to move downward through the rotating rod, and the outer wall of the friction cylinder contacts the roller. When the friction cylinder rotates clockwise, it pulls the roller to squeeze the wedge-shaped side wall of the clamping plate, driving the clamping plate to rotate clockwise. When the clamping plate rotates clockwise, it is clamped in the wedge-shaped groove of the base through the wedge plate, driving the base to rotate clockwise.

[0011] As a further improvement of the present technical solution, the end of the friction cylinder away from the rotating rod is rotatably connected to the connecting cylinder, a sleeve is sleeved on the outer wall of the connecting cylinder, a sliding column is fixedly installed on the outer wall of the connecting cylinder, an annular groove is opened on the side wall of the sleeve, and a sliding groove is opened on the inner wall of the groove plate. The sleeve rotates counterclockwise to drive the sliding column to slide downward in the sliding groove and the annular groove, and the downward sliding of the sliding column drives the connecting cylinder and the friction cylinder to slide downward. The inner wall of the friction cylinder is fixedly connected to a transmission rod, and the end of the transmission rod away from the friction cylinder is connected to the rotating shaft of the input motor. A plurality of splines are fixedly connected to the side wall of the transmission rod close to the input motor.

[0012] As a further improvement of the present technical solution, an inner groove shell is sleeved on the side of the transmission rod close to the input motor, a plurality of key slots are opened on the inner wall of the inner groove shell, the splines are clamped in the key slots, the inner groove shell slides on the transmission rod, and the transmission rod drives the inner groove shell to rotate.

[0013] As a further improvement of the present technical solution, a claw shell is fixedly connected to the side of the inner groove shell close to the transmission assembly, the outer wall of the claw shell is fixedly connected to the inner wall of the sleeve, a plurality of wedge blocks are arranged on the inner wall of the claw shell, a slide plate is hinged on the side wall of the inner groove shell, the slide plate and the side wall of the inner groove shell are connected by a transverse spring, the transmission rod rotates counterclockwise to drive the slide plate to engage with the wedge blocks on the inner wall of the claw shell and drive the claw shell to rotate counterclockwise, and the transmission rod rotates clockwise to disengage the slide plate from between the wedge blocks.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the laser welding equipment for connecting the armature flat wire for the automobile drive motor, the welding ends of the two flat wires are squeezed close together by a clamping plate with a wide top and a narrow bottom arranged in a square hole, so that the flat wires maintain close contact during welding, so that the welding point can effectively connect the two flat wires, thereby effectively improving the quality of welding.

[0016] 2. In the laser welding equipment for connecting the armature flat wire for the automobile drive motor, the base is pressed down by the lower pressure rod, so that the frustum-shaped top ring squeezes one end of the connecting rod located in the conical hole, and the other end of the connecting rod expands outward and squeezes the inner wall of the iron core, so that the iron core and the flat wire are more stable during welding, thereby avoiding the shaking of the flat wire during welding to affect the welding quality.

[0017] 3. In the laser welding equipment for connecting flat wires to the armature of the automobile drive motor, the input motor drives the rotating shaft to rotate clockwise, the friction cylinder drives the clamping plate to rotate clockwise, and then drives the base to rotate clockwise through the wedge plate, so that the iron core and the flat wire on the base rotate clockwise, and the flat wires at different positions are welded with the horizontal movement, so that the flat wire welding ends on the armature can be continuously welded, which effectively improves the work efficiency during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the shelling structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the upper fixing assembly of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure coordination between the lower fixing assembly and the connecting assembly of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the lower fixing assembly and the connecting assembly of the present invention being turned over;

[0023] Figure 6 It is a schematic diagram of the structure of the lower fixing assembly of the present invention;

[0024] Figure 7 It is an exploded schematic diagram of the connection assembly structure of the present invention;

[0025] Figure 8 It is a schematic diagram of the transmission assembly structure of the present invention;

[0026] Fig. 9 It is a schematic cross-sectional view of the transmission assembly structure of the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the ratchet assembly of the present invention;

[0028] Fig.11 It is a schematic exploded view of the ratchet assembly structure of the present invention.

[0029] The meaning of each number in the figure is:

[0030] 1. Shell device; 11. Shell; 12. Slot plate; 13. Male slide rail; 14. Female slide rail; 15. Input motor;

[0031] 2. Upper fixing assembly; 21. Orifice plate; 211. Clamping plate; 22. Lower pressure rod; 23. Rotating rod;

[0032] 3. Lower fixing assembly; 31. Base; 32. Connecting rod; 33. Pressing block;

[0033] 4. Connecting assembly; 41. Clamping plate; 42. Roller; 43. Wedge plate; 44. Top ring;

[0034] 5. Transmission assembly; 51. Sleeve; 52. Connecting cylinder; 53. Friction cylinder; 54. Transmission rod; 541. Spline;

[0035] 6. ratchet assembly; 61. claw housing; 62. inner groove housing; 63. slide plate;

[0036] 7. Laser head assembly;

[0037] 8. Armature assembly. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] Example 1

[0041] See also Figure 1-Figure 11As shown, the purpose of this embodiment is to provide a laser welding device for connecting flat wires of an armature for a vehicle drive motor, comprising a shell device 1, a laser head assembly 7 is arranged on the upper side of the shell device 1, an armature assembly 8 is arranged below the laser head assembly 7, the armature assembly 8 is composed of an iron core and a flat wire, the upper end of the flat wire is a welding end, and the welding ends of the two flat wires are welded by the laser head assembly 7, an upper fixing assembly 2 is arranged between the laser head assembly 7 and the armature assembly 8, the flat wire in the armature assembly 8 is clamped and fixed by the upper fixing assembly 2 so that the welding ends of the two flat wires are in close contact, so as to avoid the elastic deformation of the metal material during welding causing the welding ends of the two flat wires to be far apart, resulting in loose connection of the weld points, thereby affecting the welding quality, a lower fixing assembly 3 is arranged on the side of the upper fixing assembly 2 away from the laser head assembly 7, the lower fixing assembly 3 supports the iron core while squeezing the inner wall of the iron core, and when the lower fixing assembly 3 rotates, it drives the iron core and the flat wire to rotate, and then rotates the different welding ends on the iron core to the lower side of the laser head assembly 7 The lower fixing component 3 is provided with a connecting component 4 on the side away from the laser head component 7. The lower fixing component 3 squeezes the connecting component 4 downward to drive the lower fixing component 3 to squeeze the inner wall of the iron core. The iron core is fixed from the inside by the lower fixing component 3 to avoid the iron core shaking during welding and affecting the welding quality. A transmission component 5 is provided inside the connecting component 4. The upper fixing component 2 is driven to move downward by the rotation of the transmission component 5. The upper fixing component 2 moves downward to clamp the flat wire while squeezing the lower fixing component 3 in the direction of the connecting component 4. A ratchet component 6 is provided inside the transmission component 5. The transmission component 5 is controlled by the ratchet component 6. When the transmission component 5 rotates counterclockwise, the transmission component 5 drives the upper fixing component 2 to move downward through the ratchet component 6. When the transmission component 5 rotates clockwise, the transmission component 5 drives the connecting component 4 to rotate through the ratchet component 6. The connecting component 4 and the side close to the lower fixing component 3 are connected to each other, so that the connection component 4 rotates and drives the iron core on the lower fixing component 3 to rotate.

[0042] The housing device 1 includes a shell 11, which is configured to be a slot shape with an opening upward. A slot plate 12 is fixedly installed in the slot of the shell 11. The slot plate 12 is arranged on the side of the armature assembly 8 away from the laser head assembly 7. The connecting assembly 4 is supported by the slot plate 12, so that the armature is fixed between the slots of the shell 11. The top ends of the two side walls of the shell 11 are fixedly connected with male slide rails 13, and a female slide rail 14 is slidably connected between the two male slide rails 13. The laser head assembly 7 is movably installed on the female slide rail 14. The position of the laser head assembly 7 is adjusted by sliding the female slide rail 14 on the male slide rail 13, so that the device can weld the flat wire welding ends at different positions, effectively improving the welding efficiency. An input motor 15 is installed at the bottom of the shell 11, and the upper fixed assembly 2 is driven to move up and down and the lower fixed assembly 3 is rotated by the input motor 15, so that the iron core and the flat wire are fixed and rotated.

[0043] The upper fixing component 2 includes an orifice plate 21, which is arranged between the laser head component 7 and the iron core. The orifice plate 21 is moved downward to fix the welding end of the flat wire to prevent the welding end from shaking during welding. A plurality of square holes are opened on the orifice plate 21, and the square holes are sleeved on the flat wire of the armature component 8, so that the welding end is fixed in the square hole. The clamping plates 211 fixedly installed on the two side walls of the square hole make the welding ends of the two flat wires approach each other when the orifice plate 21 moves downward. The clamping plates 211 are set to a shape that is wide at the top and narrow at the bottom, so that the two flat wires can be effectively clamped when the clamping plates 211 moves downward. A plurality of downward pressure rods 22 are fixedly connected to the side of the orifice plate 21 away from the laser head component 7. When the orifice plate 21 moves downward, the downward pressure rods 22 are driven downward to press the lower fixing component 3 downward by the downward pressure rods 22. A rotating rod 23 is rotatably installed at the center of the orifice plate 21. The downward pressure rod 22 and the rotating rod 23 are arranged inside the iron core, and the orifice plate 21 is driven to move downward by the rotating rod 23.

[0044] The end of the lower pressure rod 22 away from the orifice plate 21 is provided with a base 31, and the iron core is placed on the base 31. The iron core and the flat wire are rotated by rotating the base 31. A plurality of connecting rods 32 are hinged on the side wall of the base 31 away from the orifice plate 21. The iron core is fixed by the connecting rod 32 expanding and squeezing the inner side wall of the iron core outward. The connecting rod 32 is arranged in an L shape, and one end of the connecting rod 32 passes through the side wall of the base 31 and extends into the tapered hole. When one end in the tapered hole is radially squeezed, the end of the connecting rod 32 away from the base 31 is driven to swing, so that the plurality of connecting rods 32 expand outward and squeeze the inner side wall of the iron core. The end of the connecting rod 32 away from the tapered hole is hinged with a pressing block 33, and the swingable pressing block 33 allows the connecting rod 32 to be in close contact with the inner side wall of the iron core through the pressing block 33 when swinging, thereby improving the fixing effect of the iron core during welding and making the iron core more stable during welding.

[0045] A clamping plate 41 is provided on the side of the base 31 away from the orifice plate 21, and a plurality of wedge plates 43 are hingedly connected to the side of the clamping plate 41 close to the base 31. The wedge plates 43 are clamped in a plurality of wedge-shaped grooves provided on the side of the base 31 away from the orifice plate 21. A return spring is provided between the wedge plates 43 and the bottom of the wedge grooves. The wedge plates 43 are always pressed against the base 31 by the elastic force of the return spring. When the wedge plates 43 rotate clockwise, the wedge plates 43 are clamped in the wedge-shaped grooves, thereby driving the base 31 to rotate, thereby driving the fixed iron core and the flat wire to rotate. When the wedge plates 43 rotate clockwise or counterclockwise, the wedge plates 43 are disengaged from the wedge-shaped grooves of the base 31. A plurality of wedge slots are provided on the inner side wall of the clamping plate 41, and rollers 42 are provided in the wedge slots. The rollers 42 and the side walls of the clamping plate 41 are connected by transverse springs. When the external load drives When the connecting component 4 moves toward the direction approaching the transverse spring, the transverse spring is compressed so that the roller 42 does not contact the external load, thereby making it impossible for the external load to drive the clamping plate 41 to rotate; when the external load drives the roller 42 to move in the direction away from the transverse spring, the external load drives the roller 42 to stretch the transverse spring under the action of friction, and makes the roller 42 closely contact with the external load and the side wall of the wedge gap of the clamping plate 41, thereby making the external load drive the clamping plate 41 to rotate clockwise, and a top ring 44 is fixedly installed on one side of the clamping plate 41 close to the orifice plate 21, and the top ring 44 is configured as a cone with a narrow upper part and a wide lower part. When the base 31 presses the top ring 44 downward, the connecting rod 32 in the conical hole is squeezed by the side wall of the cone to make the connecting rod 32 swing, thereby making the connecting rod 32 expand outward inside the iron core, thereby fixing the iron core from the inside.

[0046] A friction cylinder 53 is provided in the clamping plate 41. One end of the friction cylinder 53 close to the orifice plate 21 is rotatably connected to the rotating rod 23. The friction cylinder 53 drives the orifice plate 21 to move downward through the rotating rod 23. The outer wall of the friction cylinder 53 contacts the roller 42. When the friction cylinder 53 rotates clockwise, the roller 42 is pulled by the friction force to squeeze the wedge-shaped side wall of the clamping plate 41, thereby driving the clamping plate 41 to rotate clockwise. The clamping plate 41 rotates clockwise and is clamped in the wedge-shaped groove of the base 31 through the wedge plate 43, driving the base 31 to rotate clockwise. The end of the friction cylinder 53 away from the rotating rod 23 is rotatably connected to the connecting cylinder 52. A sleeve 51 is sleeved on the outer wall of the connecting cylinder 52. The sleeve 51 drives the connecting cylinder 52 to rotate clockwise. The movable connecting cylinder 52 slides downward and then drives the rotating rod 23 to move downward through the friction cylinder 53, so that the orifice plate 21 is sleeved on the welding end of the flat wire. A sliding column is fixedly installed on the outer wall of the connecting cylinder 52, and an annular groove is provided on the side wall of the sleeve 51. A sliding groove is provided on the inner wall of the groove plate 12. When the sleeve 51 rotates counterclockwise, the annular groove wall squeezes the sliding column to move downward in the sliding groove. The sliding column moves downward and drives the connecting cylinder 52 and the friction cylinder 53 to slide downward, and then drives the orifice plate 21 downward through the rotating rod 23. At the same time, several downward pressure rods 22 press down the base 31, so that the cone of the top ring 44 squeezes the connecting rod 32, and then the connecting rod 32 expands outward to fix the inner wall of the iron core.

[0047] The inner wall of the friction cylinder 53 is fixedly connected with a transmission rod 54. The rotating shaft of the input motor 15 passes through the slot plate 12 and is connected to the end of the transmission rod 54 away from the friction cylinder 53. The input motor 15 drives the transmission rod 54 to rotate through the rotating shaft. A plurality of splines 541 are fixedly connected to the side wall of the transmission rod 54 close to the input motor 15. When the transmission rod 54 rotates, the splines 541 will apply a lateral force or a tangential force to the shaft transmission rod 54. This force enables the transmission rod 54 to rotate and move. The movement and the force it bears are transmitted to the spline 541. An inner groove shell 62 is sleeved on the side of the transmission rod 54 close to the input motor 15. The spline 541 is set to make the inner groove shell 62 slide on the transmission rod 54 and the transmission rod 54 can drive the inner groove shell 62 to rotate. A plurality of key slots are opened on the inner side wall of the inner groove shell 62, and the spline 541 is clamped in the key slot. The force and movement transmitted by the transmission rod 54 will be transmitted to the inner groove shell 62 through the engagement between the spline 541 and the key slot of the inner groove shell 62.

[0048] The inner groove shell 62 is fixedly connected to the side of the transmission assembly 5 with a claw shell 61, the outer wall of the claw shell 61 is fixedly connected to the inner wall of the sleeve 51, and a plurality of wedges are arranged on the inner wall of the claw shell 61. A slide plate 63 is hinged on the side wall of the inner groove shell 62. The inner groove shell 62 drives the claw shell 61 to rotate counterclockwise when the inner groove shell 62 rotates counterclockwise through the clamping between the slide plate 63 and the wedge. The slide plate 63 and the side wall of the inner groove shell 62 are connected by a transverse spring, and the elastic force of the transverse spring causes the slide plate to rotate counterclockwise. 63 is always in close contact with the wedge block on the claw housing 61. When the transmission rod 54 rotates counterclockwise, the slide plate 63 is driven to engage with the wedge block on the inner wall of the claw housing 61, thereby driving the claw housing 61 to rotate counterclockwise, and then driving the sleeve 51 to rotate counterclockwise, and the friction cylinder 53 moves downward by squeezing the sliding column through the claw housing 61; when the transmission rod 54 rotates clockwise, the slide plate 63 is disengaged from between the wedge blocks, so that when the transmission rod 54 drives the clamping plate 41 to rotate counterclockwise through the friction cylinder 53, it no longer drives the sleeve 51 to rotate.

[0049] When the present invention is in use, the armature is placed between the orifice plate 21 and the base 31, and the input motor 15 drives the rotating shaft to rotate counterclockwise, so that the rotating rod 23 moves downward, and the upper wide and lower narrow clamping plate 211 arranged in the square hole squeezes the welding ends of the two flat wires closely together, so that the flat wires maintain close contact during welding, so that the welding point can effectively connect the two flat wires, thereby effectively improving the quality of welding; at the same time, the base 31 is pressed down by the pressing rod 22, so that the frustum-shaped top ring 44 squeezes one end of the connecting rod 32 located in the conical hole, so that the other end of the connecting rod 32 The inner wall of the iron core is expanded and squeezed outward, so that the iron core and the flat wire are more stable during welding, thereby avoiding the shaking of the flat wire during welding and affecting the welding quality; the input motor 15 drives the rotating shaft to rotate clockwise, so that the friction cylinder 53 drives the clamping plate 41 to rotate clockwise, and then drives the base 31 to rotate clockwise through the wedge plate 43, so that the iron core and the flat wire on the base 31 rotate clockwise, and cooperates with the horizontally moving laser head assembly 7 to weld the flat wires at different positions, so that the flat wire welding ends on the armature can be continuously welded, which effectively improves the work efficiency during welding.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser welding device for connecting flat wires of an armature for a vehicle drive motor, comprising a housing device (1), a laser head assembly (7) being arranged on the upper side of the housing device (1), an armature assembly (8) being arranged below the laser head assembly (7), the armature assembly (8) being composed of an iron core and flat wires, the laser head assembly (7) welding the flat wires on the armature assembly (8), an upper fixing assembly (2) being arranged between the laser head assembly (7) and the armature assembly (8), characterized in that: The upper fixing component (2) clamps and fixes the flat wire in the armature component (8); a lower fixing component (3) is arranged on a side of the upper fixing component (2) away from the laser head component (7); the lower fixing component (3) supports the iron core and squeezes the inner wall of the iron core; a connecting component (4) is arranged on a side of the lower fixing component (3) away from the laser head component (7); the lower fixing component (3) squeezes the connecting component (4) downwards to drive the lower fixing component (3) to squeeze the inner wall of the iron core; a transmission component (5) is arranged inside the connecting component (4); the transmission component (5) rotates to drive the upper fixing component (2) to move downward; the upper fixing component (2) moves downward to clamp the flat wire and squeeze the lower fixing component (3) downwards.

2. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 1 is characterized in that: A ratchet assembly (6) is arranged inside the transmission assembly (5), and the ratchet assembly (6) controls the transmission assembly (5). When the transmission assembly (5) rotates counterclockwise, the transmission assembly (5) drives the upper fixed assembly (2) to move downward through the ratchet assembly (6). When the transmission assembly (5) rotates clockwise, the transmission assembly (5) drives the connecting assembly (4) to rotate through the ratchet assembly (6). The connecting assembly (4) and the lower fixed assembly (3) are mutually engaged at their adjacent sides, and the rotation of the connecting assembly (4) drives the iron core on the lower fixed assembly (3) to rotate.

3. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 2 is characterized in that: The housing device (1) comprises a shell (11), the shell (11) being arranged in a slot shape with an opening facing upward, a slot plate (12) being fixedly installed in the slot of the shell (11), the slot plate (12) being arranged on a side of the armature assembly (8) away from the laser head assembly (7), the top ends of the two side walls of the shell (11) being fixedly connected with male slide rails (13), a female slide rail (14) being slidably connected between the two male slide rails (13), the laser head assembly (7) being movably installed on the female slide rail (14), an input motor (15) being installed at the bottom of the shell (11), the rotating shaft of the input motor (15) passing through the slot plate (12).

4. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 3 is characterized in that: The upper fixed component (2) comprises a hole plate (21), the hole plate (21) is arranged between the laser head component (7) and the iron core, a plurality of square holes are opened on the hole plate (21), the square holes are sleeved on the flat wires of the armature component (8), clamping plates (211) are fixedly installed on the two side walls of the square holes, the clamping plates (211) are arranged in a shape of being wide at the top and narrow at the bottom, and the two flat wires are clamped when the clamping plates (211) move downward, a plurality of downward pressure rods (22) are fixedly connected to the side of the hole plate (21) away from the laser head component (7), a rotating rod (23) is rotatably installed at the center of the hole plate (21), the downward pressure rod (22) and the rotating rod (23) are arranged inside the iron core, and the rotating rod (23) drives the hole plate (21) to move downward.

5. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 4 is characterized in that: A base (31) is provided at one end of the lower pressure rod (22) away from the orifice plate (21); a conical hole which is narrow at the top and wide at the bottom is provided at the side of the base (31) away from the orifice plate (21); a plurality of connecting rods (32) are hingedly connected to the side wall of the base (31) away from the orifice plate (21); the connecting rods (32) are arranged in an L shape; one end of the connecting rod (32) passes through the side wall of the base (31) and extends into the conical hole; and a pressure block (33) is hingedly connected to the end of the connecting rod (32) away from the conical hole.

6. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 5 is characterized in that: A plurality of wedge-shaped grooves are formed on a side of the base (31) away from the orifice plate (21); a clamping plate (41) is provided on a side of the base (31) away from the orifice plate (21); a plurality of wedge plates (43) are hingedly connected to a side of the clamping plate (41) close to the base (31); the wedge plates (43) are engaged in the wedge-shaped grooves when they rotate clockwise, and are disengaged from the wedge-shaped grooves when they rotate clockwise or counterclockwise; and the inner side wall of the clamping plate (41) is provided with a plurality of wedge plates (43) hingedly connected to the inner side wall of the clamping plate (41). A plurality of wedge slots are provided, wherein rollers (42) are provided in the wedge slots, wherein the rollers (42) and the side walls of the clamping plate (41) are connected via transverse springs, wherein a top ring (44) is fixedly mounted on one side of the clamping plate (41) close to the orifice plate (21), wherein the top ring (44) is configured as a cone that is narrow at the top and wide at the bottom, and when the base (31) presses the top ring (44) downward, the side walls of the cone press the connecting rod (32) in the conical hole to cause the connecting rod (32) to swing.

7. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 6 is characterized in that: A friction cylinder (53) is arranged in the clamping plate (41). One end of the friction cylinder (53) close to the orifice plate (21) is rotatably connected to the rotating rod (23). The friction cylinder (53) drives the orifice plate (21) to move downward through the rotating rod (23). The outer wall of the friction cylinder (53) contacts the roller (42). When the friction cylinder (53) rotates clockwise, it pulls the roller (42) to squeeze the wedge-shaped side wall of the clamping plate (41) to drive the clamping plate (41) to rotate clockwise. When the clamping plate (41) rotates clockwise, it is clamped in the wedge-shaped groove of the base (31) through the wedge plate (43) to drive the base (31) to rotate clockwise.

8. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 7 is characterized in that: The end of the friction cylinder (53) away from the rotating rod (23) is rotatably connected to the connecting cylinder (52), the outer wall of the connecting cylinder (52) is sleeved with a sleeve (51), the outer wall of the connecting cylinder (52) is fixedly mounted with a sliding column, the side wall of the sleeve (51) is provided with an annular groove, the inner wall of the groove plate (12) is provided with a sliding groove, the sleeve (51) rotates counterclockwise to drive the sliding column to slide downward in the sliding groove and the annular groove, the sliding column slides downward to drive the connecting cylinder (52) and the friction cylinder (53) to slide downward, the inner wall of the friction cylinder (53) is fixedly connected with a transmission rod (54), the end of the transmission rod (54) away from the friction cylinder (53) is connected to the rotating shaft of the input motor (15), and the side wall of the transmission rod (54) close to the input motor (15) is fixedly connected with a plurality of splines (541).

9. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 8, characterized in that: An inner groove shell (62) is sleeved on a side of the transmission rod (54) close to the input motor (15), and a plurality of key slots are provided on the inner side wall of the inner groove shell (62). The splines (541) are engaged in the key slots, and the inner groove shell (62) slides on the transmission rod (54), while the transmission rod (54) drives the inner groove shell (62) to rotate.

10. The laser welding equipment for connecting flat wires of armatures for automobile drive motors according to claim 9, characterized in that: A claw housing (61) is fixedly connected to one side of the inner groove shell (62) close to the transmission assembly (5); the outer wall of the claw housing (61) is fixedly connected to the inner wall of the sleeve (51); a plurality of wedge blocks are arranged on the inner wall of the claw housing (61); a slide plate (63) is hingedly connected to the side wall of the inner groove shell (62); the slide plate (63) and the side wall of the inner groove shell (62) are connected via a transverse spring; the transmission rod (54) rotates counterclockwise to drive the slide plate (63) to engage with the wedge blocks on the inner wall of the claw housing (61) and drive the claw housing (61) to rotate counterclockwise; the transmission rod (54) rotates clockwise to disengage the slide plate (63) from between the wedge blocks.

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