A welding device for a coil of a card-issuing motor

Abstract

The present application relates to a welding device for a hairpin motor coil, which includes a frame, a welding mechanism and a fixture; the welding mechanism includes a bracket and a welding part, the bracket is also connected to a welding drive part that drives the welding part to move, and the driving end of the welding drive mechanism is connected to the welding part; the fixture includes a base, a top material sleeve, a plurality of inner pressure blocks and a plurality of outer pressure blocks, a core shaft sleeve is arranged inside the top material sleeve, the core shaft sleeve is connected to the base and the inner pressure block is circumferentially slidably connected to the upper end surface of the core shaft sleeve, the core shaft sleeve is connected to a first driving mechanism, the outer pressure block slides circumferentially on the upper end of the base, the base is connected to a second driving mechanism, and the end faces of the inner pressure block and the outer pressure block abut against the side wall of the flat wire group. The present application uses the outer pressure block and the inner pressure block to limit the position of the wire head, and then uses the welding part to weld the wire head. At this time, the position of the wire head is limited during the welding process, so that the welding quality of the wire head is higher, and the quality of the processed stator is higher.

Description

Technical Field

[0001] The present application relates to the field of card-hairpinning motor processing equipment, and in particular to a welding device for a card-hairpinning motor coil. Background Art

[0002] The hairpin motor is also called the flat wire motor. It has the characteristics of small size, high power and high torque. During the production process of the stator of the hairpin motor, the wire ends of the flat wire group wound on it need to be positioned and tightened, and then the flat wire group needs to be welded using a welding machine.

[0003] At present, in the production process of the stator of the hairpin motor, many manufacturers are still in the state of semi-automatic production with manual clamping, that is, the stator is manually locked on the manual clamp during welding, and then the pressure block is manually adjusted to make the wire ends of the same flat wire group close and positioned, and then welding is performed.

[0004] With respect to the above-mentioned related technologies, the inventors believe that it is difficult to ensure that each wire end is moved to the required position when manually positioning the wire ends of the flat wire group, which makes it difficult to ensure the final position of the wire ends of the flat wire group, thereby affecting the quality of the welded products.

[0005] Therefore, it is necessary to propose a new technical solution to solve the above problems. Summary of the invention

[0006] In order to ensure that the positions of the wire ends of the flat wire group connected to the stator can be stably limited during the processing and welding of the stator, so that the quality of the processed stator is higher, the present application provides a welding device for the coil of a hairpin motor.

[0007] The present application provides a welding device for a card-issuing motor coil, which adopts the following technical solution:

[0008] A welding device for a coil of a hairpin motor comprises a frame, a welding mechanism connected to the frame, and a clamp for positioning a stator;

[0009] The welding mechanism includes a bracket connected to the frame and a welding piece for welding the flat wire group, the bracket is also connected to a welding driving piece for driving the welding piece to move, and the driving end of the welding driving mechanism is connected to the welding piece;

[0010] The clamp includes a base, a top material sleeve arranged in the base and used to support the stator, a plurality of inner pressure blocks and a plurality of outer pressure blocks for pressing a flat wire group, a core shaft sleeve for installing the inner pressure blocks is arranged in the top material sleeve, the core shaft sleeve is connected to the base and the inner pressure blocks are circumferentially slidably connected to the upper end surface of the core shaft sleeve, the core shaft sleeve is connected to a first driving mechanism that simultaneously drives the plurality of inner pressure blocks away from or close to the axis of the core shaft sleeve, the outer pressure blocks slide circumferentially on the upper end of the base, the base is connected to a second driving mechanism that simultaneously drives the outer pressure blocks to approach or away from the axis of the base, and the end surfaces of the inner pressure blocks and the outer pressure blocks that are close to each other abut against the side walls of the flat wire group located on the outside that are away from each other.

[0011] By adopting the above technical solution, the position of the wire end is limited by the outer pressure block and the inner pressure block, and then the wire end is welded by the welding part. At this time, the position of the wire end is limited during the welding process, so that the welding quality of the wire end is higher and the quality of the processed stator is higher.

[0012] Optional: The first driving mechanism includes a cone sleeve that moves vertically along the core sleeve, a plurality of sliders slidably connected to the upper end of the core sleeve, and a first cylinder that drives the cone sleeve to move vertically, the internal pressure blocks are respectively fixed to the upper ends of the sliders, the lower ends of the side walls of the cone sleeve are inclined toward the axial direction thereof, the side walls of the cone sleeve abut against the end surfaces of the sliders close to the axis of the core sleeve, the sliders are connected to a first spring that drives them to move toward the axial direction of the core sleeve, the end of the first spring away from the slider is connected to the core sleeve, the first cylinder is fixed to the lower end of the core sleeve, and the piston rod of the first cylinder is connected to the cone sleeve.

[0013] By adopting the above technical solution, the first driving mechanism is used to simultaneously drive multiple internal pressure blocks to move. At this time, it is no longer necessary to push the internal pressure blocks separately, making the use of the internal pressure blocks more convenient.

[0014] Optionally: the sliding blocks are all fixed with abutment blocks, the abutment blocks are located below the inner pressure block, and the side walls of the abutment blocks away from the axis of the core shaft sleeve abut against the flat wire group.

[0015] By adopting the above technical solution, the abutment block is used to limit the position of the flat wire group below the wire head, so that the height of the wire head can be kept stable, so that the overall quality of the flat wire group is not easily affected after welding.

[0016] Optionally: the base is connected to a third cylinder for driving the ejection sleeve to move vertically, the cylinder body of the third cylinder is connected to the base, and the piston rod of the third cylinder is connected to the ejection sleeve.

[0017] By adopting the above technical solution, the third cylinder is used to drive the ejection sleeve to move upward. At this time, the stator can be directly placed on the ejection sleeve, and then the ejection sleeve is lowered to the processing position. The stator will not be hindered by other mechanisms during the process of loading onto the ejection sleeve, thereby making the loading process of the stator more convenient.

[0018] Optional: The second driving mechanism includes a plurality of driving blocks that slide circumferentially on the upper end of the base, a plurality of connecting rods hinged to the outer wall of the base, a driving ring that drives the plurality of connecting rods to rotate at the same time, and a second cylinder that drives the driving ring to move vertically, the external pressure blocks are respectively fixed to the upper ends of the driving blocks, the lower ends of the driving blocks are provided with driven grooves, the upper ends of the connecting rods are inserted into the driven grooves and drive the driving blocks to move, a plurality of active grooves are circumferentially provided on the outer wall of the driving ring, the end of the connecting rod away from the driven groove is inserted into the active groove, and the connecting line at both ends of the connecting rod is set at an angle to the axis of the top material sleeve.

[0019] By adopting the above technical solution, the second driving mechanism is used to drive the external pressure block to approach or flatten the wire group. At this time, the external pressure blocks can move at the same time and the moving distances are equal, so that the positions of the wire ends defined by the external pressure blocks remain consistent, and the quality of the processed stator is higher.

[0020] Optionally, a pin is fixed on the upper end of each of the driving blocks, the pin is arranged between adjacent external pressure blocks, and the pin is inserted between adjacent flat wire groups.

[0021] By adopting the above technical solution, the adjacent wire ends are separated by the ejector pin, so that the positions of the wire ends are also limited and kept equal, making the welding process of the flat wire group more stable.

[0022] Optionally: a ring-shaped pressure cover is coaxially fixed to the upper end of the base, the lower end of the pressure cover abuts against the upper end of the outer pressure block, and the stator passes through the inner cavity of the pressure cover.

[0023] By adopting the above technical solution, the pressure cover is used to guide the movement process of the external pressure block and the ejector pin, so that the external pressure block and the ejector pin are not easily separated from the base, thereby making the positioning process of the flat wire group more stable.

[0024] Optionally: the welding drive member includes a mounting plate that slides vertically on the bracket, a rotating ring rotatably connected to the mounting plate, and a welding drive member that drives the rotating ring to rotate, the welding member is arranged at the lower end of the rotating ring, the rotating axis of the rotating ring coincides with the axis of the stator, the rotating ring is coaxially provided with a driven gear, the driving end of the welding drive member is connected to a driving gear, and the driving gear is meshed with the driven gear.

[0025] By adopting the above technical solution, the welding part is driven to move by the welding driving part. At this time, the moving speed of the welding part can be controlled during the welding process, so that the welding speed is more suitable for welding and the welding quality is not easily affected.

[0026] Optionally: the bracket is also provided with a vertical driving mechanism for driving the mounting plate to move vertically, the vertical driving mechanism includes a plurality of screws rotatably connected to the upper end of the mounting plate and a vertical driving member that drives the plurality of screws to rotate synchronously, the upper end of the bracket is rotatably connected to a plurality of driven pulleys, each of the screws is passed through a driven pulley and cooperates with the driven pulley thread, the driving end of the vertical driving member is connected to the driven pulley and drives the driven pulley to rotate.

[0027] By adopting the above technical solution, the vertical driving mechanism is used to drive the welding part to move vertically, and the contact position between the welding part and the wire head can be limited, so that the welding process is more stable and the welding quality is higher.

[0028] Optionally: the mounting plate is also connected to an adjustment mechanism for adjusting the position of the welding part, the adjustment mechanism includes an adjustment seat connected to the mounting plate, a mounting block slidably connected to the adjustment seat, and an adjustment bolt driving the mounting block to move, the welding part is connected to the mounting block, the adjustment bolt is simultaneously passed through the adjustment seat and the mounting block, the adjustment bolt is rotatably connected to the adjustment seat, and the adjustment bolt is threadedly connected to the mounting block.

[0029] By adopting the above technical solution, the distance between the welding part and the stator axis is adjusted by using the adjustment mechanism, so that the position of the welding part can be adjusted after the welding part is replaced, so that the welding position of the welding part is not easily affected.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. The present application uses a fixture to automatically position the ends of the flat wire group, so that the ends are not easily changed during welding, thereby making the quality of the processed stator less likely to be affected;

[0032] 2. During the welding process, the vertical driving mechanism is used to limit the contact position between the welding head and the wire head, so that the welding position of the wire head is guaranteed, so that the processed flat wire group is more in line with the standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0034] Figure 2 This is a schematic diagram for illustrating the structure of a clamp according to an embodiment of the present application;

[0035] Figure 3 for Figure 2 Schematic diagram of part A;

[0036] Figure 4 for Figure 2 Schematic diagram of part B;

[0037] Figure 5 This is a schematic diagram for illustrating the connection structure between the driving block and the guide ring in an embodiment of the present application;

[0038] Figure 6 This is a schematic diagram for illustrating the structure of an extrapolation block in an embodiment of the present application;

[0039] Figure 7 for Figure 6 Enlarged view of part C;

[0040] Figure 8 This is a schematic diagram for illustrating the structure of a welding drive mechanism according to an embodiment of the present application;

[0041] Fig. 9 for Figure 1 Schematic diagram of part D.

[0042] In the figure, 1, frame; 2, welding mechanism; 21, bracket; 211, guide rod; 212, fixing plate; 22, welding member; 23, welding drive mechanism; 231, mounting plate; 232, rotating ring; 233, welding drive member; 234, driving gear; 235, driven gear; 24, extension rod; 25, adjustment plate; 3, clamp; 31, base; 311, mounting groove; 32, top material sleeve; 321, fixing rod; 33, Inner pressure block; 34, outer pressure block; 341, clamping block; 342, placement groove; 343, first adjustment groove; 344, second spring; 35, third cylinder; 36, guide ring; 361, guide groove; 37, extension ring; 371, guide groove; 38, gland; 381, positioning ring; 382, ​​guide ring; 383, guide slope; 39, mounting ring; 391, connecting groove; 4, vertical drive mechanism; 41, lead screw; 42, vertical drive member; 43, driving pulley; 44, driven pulley; 45, tensioning wheel; 46, synchronous belt; 5, first driving mechanism; 51, cone sleeve; 52, slider; 521, receiving groove; 53, first cylinder; 54, first spring; 55, abutment block; 551, avoidance groove; 6, second driving mechanism; 61, driving block; 611, clamping groove; 612, driven groove; 613, second adjustment groove; 62, connecting rod; 621, vertical Straight rod; 622, horizontal rod; 63, drive ring; 631, active groove; 64, second cylinder; 65, cross bar; 66, second adjusting block; 661, spring groove; 662, push block; 67, third spring; 68, drive rod; 7, core shaft sleeve; 71, movable groove; 72, sliding groove; 73, abutment ring; 8, ejector pin; 81, first adjusting block; 9, adjusting mechanism; 91, adjusting seat; 92, mounting block; 93, adjusting bolt. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the accompanying drawings.

[0044] The present application discloses a welding device for a hairpin motor coil, which can automatically position the wire ends of a flat wire group through a mechanical structure, making the positioning of the wire ends more accurate, thereby improving the quality of the processed flat wire group.

[0045] like Figure 1 As shown, it includes a frame 1, a welding mechanism 2 arranged on the frame 1, and a fixture 3 for positioning the stator. Figure 2 and Figure 3As shown, the clamp 3 includes a cylindrical base 31 with an upper opening, a top-loading sleeve 32 coaxially arranged in the inner cavity of the base 31 and used to support and position the stator, and a plurality of inner pressure blocks 33 and a plurality of outer pressure blocks 34 for pressing the ends of the flat wire group. The base 31 is fixed to the upper end surface of the frame 1 by bolts, and its lower end is coaxially connected with a third cylinder 35 for driving the top-loading sleeve 32 to move vertically by bolts. The piston rod of the third cylinder 35 passes through the base 31 and is connected with a horizontally arranged fixing rod 321 by bolts. Both ends of the fixing rod 321 are fixed to the top-loading sleeve 32 by bolts. The inner cavity of the base 31 is also coaxially fixed with a core shaft sleeve 7 with a lower opening by bolts. The core shaft sleeve 7 is arranged in the top-loading sleeve 32. The top-loading sleeve 32 moves vertically along the core shaft sleeve 7. The outer wall of the core shaft sleeve 7 is penetrated by a plurality of movable grooves 71. The fixing rod 321 passes through the movable grooves 71 with a gap between the two. As shown Figure 2 and Figure 3 The first driving mechanism 5 includes a cone sleeve 51 that slides vertically along the mandrel sleeve 7, a plurality of sliders 52 that are circumferentially connected to the upper end surface of the mandrel sleeve 7, and a first cylinder 53 that drives the cone sleeve 51 to move. A plurality of sliding grooves 72 are circumferentially provided at the upper end of the mandrel sleeve 7, and the lower end of the slider 52 is placed in the sliding groove 72 to slide. The inner pressure block 33 is fixed to the upper end surface of the mandrel sleeve 7 with bolts, and the inner pressure block 33 moves in a direction away from the axis of the mandrel sleeve 7 so that the end surface away from the axis of the mandrel sleeve 7 abuts against the side wall of the flat wire group close to the axis of the mandrel sleeve 7, thereby limiting the position of the wire end of the flat wire group on one side. A receiving groove 521 is provided on the side wall of the slider 52 away from the axis of the mandrel sleeve 7, and a first spring 54 that drives the slider 52 close to the axis of the mandrel sleeve 7 is arranged in the receiving groove 521. The upper end of the outer wall of the core shaft sleeve 7 is sleeved with an abutment ring 73, which is fixed to the core shaft sleeve 7 by bolts, and the end of the first spring 54 away from the axis of the core shaft sleeve 7 abuts against the inner wall of the abutment ring 73. The lower end of the side wall of the cone sleeve 51 is inclined toward its axis, and the side wall of the cone sleeve 51 abuts against the side wall of the slider 52 close to the axis of the core shaft sleeve 7. The lower end of the cone sleeve 51 is also coaxially integrally formed with an extension rod 24, which passes through the core shaft sleeve 7 and is inserted into the inner cavity of the core shaft sleeve 7. The cylinder body of the first cylinder 53 is coaxially fixed to the top wall of the inner cavity of the core shaft sleeve 7 by bolts, and its piston rod is connected to the lower end of the extension rod 24 by a coupling. After the stator is placed on the top sleeve 32, the piston rod of the first cylinder 53 moves downward to move the cone sleeve 51 downward, and the cone sleeve 51 drives the slider 52 to move toward the stator to use the internal pressure block 33 to locate the position of the wire head of the flat wire group close to the axis of the top sleeve 32.

[0046] like Figure 3As shown, when positioning the position of the thread end, it is also necessary to limit the thread end close to the stator. Therefore, the upper end of the slider 52 is connected with an abutment block 55 using bolts. The abutment block 55 is located below the internal pressure block 33. When the internal pressure block 33 abuts against the thread end, the side wall of the abutment block 55 away from the axis of the core shaft sleeve 7 abuts against the inner wall of the stator. At this time, the abutment block 55 is used to limit the position of the thread end close to the stator relative to the core shaft sleeve 7, so that the positioning of the thread end of the flat wire group is more accurate.

[0047] like Figure 2 and Figure 4 As shown, the upper end of the base 31 is also circumferentially provided with a plurality of external pressure blocks 34 for positioning the ends of the flat wire group away from the axis of the base 31. The external pressure blocks 34 are used to press and position the ends of the flat wire group away from the axis of the base 31. The upper end of the base 31 is also connected to a second driving mechanism 6 that simultaneously drives the external pressure blocks 34 to approach or move away from the stator. The second driving mechanism 6 includes a plurality of driving blocks 61 that slide circumferentially on the upper end of the base 31, a plurality of connecting rods 62 that are hinged to the outer wall of the base 31, a driving ring 63 that simultaneously drives the plurality of connecting rods 62 to rotate, and two second cylinders 64 that drive the driving ring 63 to move vertically. Figure 5 and Figure 6 As shown, the upper end of the base 31 is coaxially connected to a guide ring 36, and a plurality of guide grooves 361 are circumferentially provided on the upper end of the guide ring 36. The guide grooves 361 penetrate the inner wall and the outer wall of the guide ring 36, and the driving blocks 61 are respectively placed in the guide grooves 361 for movement. The end surface of the driving block 61 close to the axis of the base 31 is provided with a clamping groove 611, and the clamping groove 611 penetrates the upper end surface of the driving block 61. The side wall of the lower end surface of the external pressure block 34 away from the axis of the base 31 is integrally formed with a clamping block 341, and the clamping block 341 is inserted into the clamping groove 611. At this time, the upper end surface of the external pressure block 34 and the upper end surface of the driving block 61 are in the same plane. An extension ring 37 is coaxially fixed to the upper end of the base 31 by bolts. The outer wall of the extension ring 37 abuts against the inner wall of the guide ring 36. A guide groove 371 is circumferentially formed on the upper end of the extension ring 37. The guide groove 371 penetrates the outer wall and the inner wall of the extension ring 37. The end of the outer pressure block 34 away from the driving block 61 is placed in the guide groove 371 and slides. Figure 4As shown, the connecting rod 62 includes a vertical rod 621 and a horizontal rod 622 arranged perpendicular to the vertical rod 621, and the vertical rod 621 and the horizontal rod 622 are integrally formed. The outer wall of the base 31 is provided with a mounting groove, and the mounting groove penetrates the upper end of the base 31. The driving ring 63 is sleeved in the mounting groove and slides vertically, and the outer wall of the driving ring 63 is provided with a plurality of active grooves 631 in the circumferential direction. The mounting groove 311 is also connected with a mounting ring 39 by bolts, and the upper end of the mounting ring 39 abuts against the lower end of the guide ring 36, and the lower end of the mounting ring 39 abuts against the bottom surface of the mounting groove 311. The outer wall of the mounting ring 39 is circumferentially penetrated with a plurality of connection grooves 391, and the connection grooves 391 penetrate the upper end surface of the mounting ring 39. The connection between the vertical rod 621 and the horizontal rod 622 is rotated in the connection grooves 391. The end of the vertical rod 621 away from the horizontal rod 622 is inserted into the driven groove 612, and the end of the horizontal rod 622 away from the vertical rod 621 is inserted into the active groove 631. The ends of the vertical rod 621 and the horizontal rod 622 away from each other are both set in a disc shape. The cylinder bodies of the two second cylinders 64 are both fixed to the lower end of the base 31 with bolts, and are respectively located on both sides of the third cylinder 35. The piston rods of the two second cylinders 64 are also connected to the cross bar 65 with bolts. Both ends of the cross bar 65 are connected to the drive rod 68 with bolts. The drive rod 68 is inserted into the mounting groove and fixed to the drive ring 63 with bolts. The second cylinder 64 is used to push the driving ring 63 to move vertically, thereby driving the external pressing block 34 connected to the driving block 61 to move closer to or away from the stator, thereby achieving the pressing and positioning of the flat wire assembly wire ends.

[0048] like Figure 7 As shown, after defining the position of the flat wire group, it is also necessary to define the interval between adjacent flat wire groups, so a placement groove 342 is provided at the upper end of the external pressure block 34, and the placement groove 342 penetrates the side wall of the external pressure block 34 close to the axis of the base 31 and the vertical side wall of the external pressure block 34, and an ejector pin 8 is provided in the placement groove 342, and one end of the ejector pin 8 close to the axis of the base 31 protrudes from the placement groove 342. A first adjustment groove 343 is also penetrated through the bottom surface of the placement groove 342, and a first adjustment block 81 is integrally formed at the lower end of the ejector pin 8, and the first adjustment block 81 is placed in the first adjustment groove 343 for sliding. A second spring 344 is also provided in the placement groove 342 to drive the ejector pin 8 to move toward the axis of the base 31, and one end of the second spring 344 is placed in a groove provided in the side wall of the placement groove 342, and the other end of the second spring 344 abuts against one end of the ejector pin 8 away from the axis of the base 31. After the outer pressure block 34 is used to locate the position of the wire head, the ejector pin 8 is inserted between adjacent wire groups to limit the spacing between adjacent flat wire groups, thereby improving the quality of subsequent welding. At the same time, the second spring 344 is used to enable the ejector pin 8 to move horizontally. At this time, when the required spacing between adjacent flat wire groups is different, the ejector pin 8 can still be inserted between adjacent flat wire groups.

[0049] like Figure 6As shown, the upper end of the driving block 61 is also provided with a second adjustment groove 613 connected to the driven groove 612, and the second adjustment block 66 is slidably connected in the second adjustment groove 613. The lower end of the second adjustment block 66 is provided with a spring groove 661 that penetrates its end surface close to the axis of the base 31, and the spring groove 661 is provided with a third spring 67 that pushes the second adjustment groove 613 away from the axis of the base 31. One end of the third spring 67 abuts against the side wall of the spring groove 661 away from the axis of the base 31, and the other end of the third spring 67 abuts against the side wall of the second adjustment groove 613 close to the axis of the base 31. A push block 662 is integrally formed at the position of the lower end of the second adjustment block 66 away from the axis of the base 31, and one end of the push block 662 away from the axis of the base 31 abuts against one end of the vertical rod 621 away from the horizontal rod 622. The slidable second adjustment block 66 is used to adjust the distance that the driving block 61 moves toward the axis of the base 31, so that the external pressure block 34 can press and position flat wire groups of different sizes.

[0050] like Figure 3 As shown, due to the long length of the ejector pin 8, when the outer pressure block 34 is used to position the end of the flat wire group, the ejector pin 8 will contact the abutment block 55. Therefore, a plurality of air avoidance grooves 551 are provided on the upper end surface of the abutment block 55 along the circumferential direction of the axis of the base 31. The air avoidance grooves 551 penetrate the end surface of the abutment block 55 away from the axis of the base 31. The ejector pin 8 passes through the gap between adjacent flat wire groups and is inserted into the air avoidance grooves 551. At this time, the ejector pin 8 is not easily affected by the abutment block 55, so that the adjustment process of the spacing of the flat wire groups by the ejector pin 8 is not easily affected.

[0051] like Figure 2 As shown, a pressure cap 38 is provided at the upper end of the guide ring 36. The pressure cap 38 includes a positioning ring 381 for limiting the position of the driving block 61 and a guide ring 382 for guiding the stator into the inner cavity of the base 31. The positioning ring 381 is fixed to the upper end of the guide ring 36 by bolts, and its lower end abuts against the upper end of the driving block 61, the second adjustment block 66 and the outer pressure block 34. The guide ring 382 is fixed to the upper end of the positioning ring 381 by bolts, and the lower end surface of the guide ring 382 abuts against the upper end of the ejector pin 8 and the outer pressure block 34. A guide slope 383 is provided at the upper end of the guide ring 382, ​​and the end of the guide slope 383 close to the axis of the base 31 is inclined downward. At this time, the pressure cap 38 is used to limit the positions of the driving block 61, the second adjustment block 66, the outer pressure block 34 and the ejector pin 8, so that the four remain stable during the movement.

[0052] like Figure 1 and Figure 8As shown, the welding mechanism 2 includes a bracket 21 fixed to the upper end of the frame 1 with bolts and a welding piece 22 for welding the flat wire group, and the welding piece 22 is two electric welding heads. The bracket 21 is also connected to a welding driving mechanism 23 that drives the welding piece 22 to move along the welding track. The welding driving mechanism 23 includes a mounting plate 231 that slides vertically on the bracket 21, a rotating ring 232 that is rotatably connected to the bottom of the mounting plate 231, and a welding driving piece 233 that drives the rotating ring 232 to rotate along its axis. The bracket 21 includes two vertically arranged guide rods 211 and a fixing plate 212 that connects the upper ends of the two guide rods 211. The two guide rods 211 are respectively located on both sides of the clamp 3, and the two guide rods 211 are penetrated through the mounting plate 231 and used to guide the vertical movement of the mounting plate 231. The rotation axis of the rotating ring 232 coincides with the axis of the top material sleeve 32. Two electric welding heads are arranged below the rotating ring 232. The two electric welding heads are respectively located on both sides of the axis of the rotating ring 232, and respectively weld the wire ends of the flat winding. The welding drive 233 is a first servo motor, which is fixed to the upper end of the mounting plate 231 with bolts. Its output shaft is passed through the mounting plate 231 and is coaxially fixed with a driving gear 234. The outer wall of the rotating ring 232 is coaxially fixed with a driven gear 235, and the driving gear 234 is meshed with the driven gear 235. At this time, after the position of the stator and the flat wire group is determined, the mounting plate 231 is moved down so that the electric welding head contacts the wire end of the flat wire group, and then the power is turned on and the rotating ring 232 is rotated to weld the wire end. At this time, the position of the wire end is limited during welding, so that the quality of the processed stator is more stable.

[0053] like Fig. 9 As shown, since the distance of the electric welding head moving downward must be limited during welding, the fixed plate 212 is also connected to a vertical driving mechanism 4 that drives the mounting plate 231 to move vertically. The vertical driving mechanism 4 includes two lead screws 41 rotatably connected to the upper end of the mounting plate 231 and a vertical driving member 42 that drives the two lead screws 41 to rotate synchronously. The vertical driving member 42 is a second servo motor, which is fixed to the upper end of the fixed plate 212 by bolts, and its output shaft is coaxially fixed with a driving pulley 43. The two lead screws 41 are respectively arranged on both sides of the axis of the mounting plate 231, and their upper ends are penetrated through the fixed plate 212 and are rotatably connected to the fixed plate 212. The upper end of the fixed plate 212 is also rotatably connected to two driven pulleys 44, and the lead screws 41 are respectively penetrated through a driven drive and are threadedly connected to the driven pulley 44. The driving pulley 43 and the driven pulley 44 are simultaneously sleeved with a synchronous belt 46, and the synchronous belt is used to drive the driven pulley 44 to rotate synchronously. The upper end of the mounting plate 231 is also rotatably connected to a plurality of tensioning wheels 45, which are respectively in contact with the side walls of the synchronous belt, and the tensioning wheels 45 bend the synchronous belt between the driving pulley 43 and the synchronous pulley to keep the synchronous belt taut, thereby making the rotation of the driven pulley 44 less easily affected.

[0054] like Figure 8 As shown, the lower end of the rotating ring 232 is connected with a plurality of extension rods 24 by bolts, and the lower end of the extension rod 24 is fixed with an adjustment disk 25 by bolts. The axis of the adjustment disk 25 coincides with the axis of the rotating ring 232. Two groups of adjustment mechanisms 9 are arranged below the adjustment plate to adjust the distance between the electric welding head and the axis of the adjustment disk 25 respectively. The adjustment mechanism 9 includes an adjustment seat 91 fixed below the adjustment disk 25, a mounting block 92 for mounting the electric welding head, and an adjustment bolt 93 for driving the mounting block 92 to move. The adjustment seat 91 is fixed to the lower end surface of the adjustment disk 25 by bolts, and the upper end of the mounting seat is connected to the adjustment seat 91 and slides along the adjustment seat 91. The adjustment bolt 93 is simultaneously penetrated through the adjustment seat 91 and the mounting block 92. The adjustment bolt 93 is rotatably connected to the adjustment seat 91, and the adjustment bolt 93 is threadedly connected to the mounting block 92. The extension line of the axis of the adjustment bolt 93 intersects and is perpendicular to the axis of the adjustment disk 25. The electric welding heads are respectively installed on a mounting block 92, and the mounting block 92 is fixed by bolts to abut the electric welding heads against the mounting block 92. At this time, before welding, by adjusting the position of the mounting block 92, the spot welding position of the electric welding head is overlapped with the position of the wire end after positioning, so that the welding process is not easily affected.

[0055] The implementation principle of this embodiment is as follows: the third cylinder 35 drives the upper end of the ejection sleeve 32 to move above the cover plate, and the stator is placed on the ejection sleeve 32. Then the third cylinder 35 drives the ejection sleeve 32 to move downward to move the stator into the base 31. The second cylinder 64 pushes the cone sleeve 51 downward, and the cone sleeve 51 pushes the abutment block 55 to move toward the inner wall of the stator, so that the abutment block 55 abuts against the inner wall of the stator, and the inner pressure block 33 abuts against the wire end of the flat wire group close to the axis of the base 31. The second cylinder 64 pushes the drive ring 63 downward. The connecting rod 62 is used to drive the driving block 61 to move toward the axis of the base 31, so that the ejector pin 8 is inserted between adjacent flat wire groups to limit the spacing. Then the external pressure block 34 abuts against the wire ends of the flat wire group away from the axis of the base 31 to limit the position of the wire ends. The second servo motor drives the lead screw 41 to rotate so that the mounting plate 231 moves downward, so that the welding part of the welding head contacts the wire ends. At this time, the welding is energized and the first servo motor drives the welding head to rotate along the axis of the stator, so that all the wire ends on the stator are welded.

[0056] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A welding device for a card-issuing motor coil, characterized in that: It comprises a frame (1), a welding mechanism (2) connected to the frame (1), and a clamp (3) for positioning the stator; The welding mechanism (2) comprises a bracket (21) connected to the frame (1) and a welding member (22) for welding the flat wire group, the bracket (21) is also connected to a welding driving member (233) for driving the welding member (22) to move, and the driving end of the welding driving member (233) is connected to the welding member (22); The clamp (3) comprises a base (31), a top material sleeve (32) arranged in the base (31) and used to support the stator, a plurality of internal pressure blocks (33) and a plurality of external pressure blocks (34) for pressing the flat wire group, a core shaft sleeve (7) for mounting the internal pressure blocks (33) is arranged in the top material sleeve (32), the core shaft sleeve (7) is connected to the base (31), and the internal pressure blocks (33) are circumferentially slidably connected to the upper end surface of the core shaft sleeve (7), and the core shaft sleeve (7) is connected to a first drive mechanism for simultaneously driving the plurality of internal pressure blocks (33) away from or close to the axis of the core shaft sleeve (7). The outer pressure block (34) is circumferentially slidable on the upper end of the base (31); the base (31) is connected to a second driving mechanism (6) for simultaneously driving the outer pressure block (34) to move toward or away from the axis of the base (31); the end surfaces of the inner pressure block (33) and the outer pressure block (34) approaching each other are in contact with the side walls of the flat wire group located on the outer side and away from each other; the first driving mechanism (5) comprises a cone sleeve (51) moving vertically along the core shaft sleeve (7), a plurality of sliders (52) slidably connected to the upper end of the core shaft sleeve (7), and a driving mechanism (6). A first cylinder (53) is provided for vertically moving the cone sleeve (51), the inner pressure blocks (33) are respectively fixed to the upper ends of the sliders (52), the lower ends of the side walls of the cone sleeve (51) are inclined toward the axis thereof, the side walls of the cone sleeve (51) are in contact with the end faces of the sliders (52) close to the axis of the core shaft sleeve (7), the sliders (52) are connected to first springs (54) for driving them to move toward the axis of the core shaft sleeve (7), the end of the first spring (54) away from the sliders (52) is connected to the core shaft sleeve (7), the first cylinder (53) is fixed to the core shaft sleeve (7), and the inner pressure blocks (33) are respectively fixed to the upper ends of the side walls of the cone sleeve (51) are inclined toward the axis thereof, the side walls of the cone sleeve (51) are in contact with the end faces of the sliders (52) close to the axis of the core shaft sleeve (7), the first springs (54) are connected to the core shaft sleeve (7), and the inner pressure blocks (33) are respectively fixed to the upper ends of the side walls of the cone sleeve (51) ... At the lower end of the shaft sleeve (7), the piston rod of the first cylinder (53) is connected to the cone sleeve (51); the sliders (52) are fixed with abutment blocks (55), the abutment blocks (55) are located below the inner pressure block (33), and the side wall of the abutment blocks (55) away from the axis of the core shaft sleeve (7) abuts against the flat wire group; the base (31) is connected to a third cylinder (35) for driving the ejection sleeve (32) to move vertically, the cylinder body of the third cylinder (35) is connected to the base (31), and the piston rod of the third cylinder (35) is connected to the ejection sleeve (32);The second driving mechanism (6) comprises a plurality of driving blocks (61) that slide circumferentially on the upper end of the base (31), a plurality of connecting rods (62) that are hinged to the outer wall of the base (31), a driving ring (63) that simultaneously drives the plurality of connecting rods (62) to rotate, and a second cylinder (64) that drives the driving ring (63) to move vertically, the external pressure blocks (34) are respectively fixed to the upper ends of the driving blocks (61), the lower ends of the driving blocks (61) are each provided with a driven groove (612), the upper ends of the connecting rods (62) are inserted into the driven groove (613), and the driven groove (614) is provided with a driven groove (615). 612) and drives the driving block (61) to move, the outer wall of the driving ring (63) is provided with a plurality of active grooves (631) in the circumferential direction, the end of the connecting rod (62) away from the driven groove (612) is inserted into the active groove (631), and the connecting line between the two ends of the connecting rod (62) and the axis of the ejector sleeve (32) are arranged at an angle; the upper end of each driving block (61) is fixed with an ejector pin (8), the ejector pin (8) is arranged between adjacent external pressure blocks (34), and the ejector pin (8) is inserted between adjacent flat wire groups. ; 2. A welding device for a card-issuing motor coil according to claim 1, characterized in that: An annular pressure cover (38) is coaxially fixed to the upper end of the base (31), the lower end of the pressure cover (38) abuts against the upper end of the outer pressure block (34), and the stator passes through the inner cavity of the pressure cover (38).

3. The welding device for a card-issuing motor coil according to claim 1, characterized in that: The welding driving member (233) comprises a mounting plate (231) vertically sliding on a bracket (21), a rotating ring (232) rotatably connected to the mounting plate (231), and a welding driving member (233) driving the rotating ring (232) to rotate, the welding member (22) being arranged at the lower end of the rotating ring (232), the rotating axis of the rotating ring (232) coincides with the axis of the stator, the rotating ring (232) is coaxially provided with a driven gear (235), the driving end of the welding driving member (233) is connected to a driving gear (234), and the driving gear (234) is meshed with the driven gear (235).

4. A welding device for a card-issuing motor coil according to claim 3, characterized in that: The bracket (21) is also provided with a vertical driving mechanism (4) for driving the mounting plate (231) to move vertically. The vertical driving mechanism (4) comprises a plurality of lead screws (41) rotatably connected to the upper end of the mounting plate (231) and a vertical driving member (42) for driving the plurality of lead screws (41) to rotate synchronously. The upper end of the bracket (21) is rotatably connected to a plurality of driven pulleys (44). Each lead screw (41) is passed through a driven pulley (44) and threadedly engaged with the driven pulley (44). The driving end of the vertical driving member (42) is connected to the driven pulley (44) and drives the driven pulley (44) to rotate.

5. The welding device for a card-hair-issuing motor coil according to claim 3, characterized in that: The mounting plate (231) is also connected to an adjustment mechanism (9) for adjusting the position of the welding member (22); the adjustment mechanism (9) comprises an adjustment seat (91) connected to the mounting plate (231), a mounting block (92) slidably connected to the adjustment seat (91), and an adjustment bolt (93) for driving the mounting block (92) to move; the welding member (22) is connected to the mounting block (92); the adjustment bolt (93) is simultaneously passed through the adjustment seat (91) and the mounting block (92); the adjustment bolt (93) is rotatably connected to the adjustment seat (91); and the adjustment bolt (93) is threadedly connected to the mounting block (92).

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