Welding equipment for automatic production line of coreless motor rotor

Abstract

The invention discloses welding equipment for a coreless motor rotor automatic production line, the welding equipment comprises a tin soldering device and a rotating base, the tin soldering device comprises a supporting seat, a tin breaking machine and a tin soldering gun, the tin breaking machine and the tin soldering gun are mounted on the supporting seat, and the tin breaking machine is used for conveying a tin wire to the tin soldering gun; the rotating base comprises a mounting platform, a motor, a carrier positioning block and a rotating shaft, the motor and the carrier positioning block are respectively mounted on the mounting platform, the rotating shaft is vertically arranged, the carrier positioning block is fixedly mounted at the top end of the rotating shaft, the carrier positioning block is located below the soldering gun, and the soldering gun is fixedly mounted on the rotating shaft. The carrier positioning block is used for driving a carrier which is fixed on the carrier positioning block and is used for carrying a coreless motor rotor to rotate, so that a commutator and a circle of wire end of a wire cup of the coreless motor rotor are welded together by a soldering gun. The device can be fully mechanically and automatically operated in the whole process, manual operation is not needed, productivity is greatly liberated, and production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the field of hollow cup motor rotor manufacturing equipment, and more specifically, relates to welding equipment for a hollow cup motor rotor automatic production line. Background Art

[0002] With the development of science and technology and the increase in labor costs, production automation has become more and more in line with the current situation. Replacing manual production with fully automatic production lines has become the choice of more and more manufacturing companies.

[0003] Hollow cup motors are widely used in military, aerospace, civil appliances, industrial products and other fields because of their outstanding features such as high energy conversion efficiency, rapid starting and braking, stable and reliable operation, and small speed fluctuation.

[0004] In the prior art, when manufacturing a hollow cup rotor, it is usually necessary to perform welding on the hollow cup rotor. In the prior art, welding on the hollow cup rotor is usually performed manually. The prepared wire cup is manually welded to the rotor. Manual operation takes up the operator's operating time to complete the above operation, which restricts the production cost of the hollow cup motor. In addition, since the welding process is relatively difficult, manual operation will increase the risk of high temperature burns to the operator. Summary of the invention

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a welding device for an automated production line of hollow cup motor rotors, which can be fully mechanically automatic throughout the entire process and does not require manual operation, thereby greatly liberating productivity and improving production efficiency.

[0006] To achieve the above object, according to one aspect of the present invention, a welding device for an automated production line of a coreless motor rotor is provided, characterized in that it comprises a soldering device and a rotating base, wherein:

[0007] The soldering device comprises a support seat, a tin-breaking machine and a soldering gun installed on the support seat, wherein the tin-breaking machine is used to convey tin wire to the soldering gun;

[0008] The rotating base includes a mounting platform, a motor, a carrier positioning block and a rotating shaft, wherein the motor and the carrier positioning block are respectively mounted on the mounting platform, the rotating shaft is vertically arranged, the carrier positioning block is fixedly mounted on the top end of the rotating shaft, and the carrier positioning block is located below the solder gun to drive the carrier fixed on the carrier positioning block and used for carrying the hollow cup motor rotor to rotate, so that the solder gun can weld the commutator and a circle of wire ends of the wire cup of the hollow cup motor rotor together.

[0009] Preferably, the soldering device further comprises a motor, a screw mechanism, a lifting platform, a cylinder A, a fixture, a bracket and a connector, and the cylinder A, the solder gun, the fixture, the bracket and the connector together constitute a soldering unit, wherein:

[0010] The motor is mounted on the support seat, and the output shaft of the motor is connected to the lead screw of the lead screw mechanism, and the transmission nut of the lead screw mechanism is connected to the lifting platform to drive the lifting platform to move up and down;

[0011] The cylinder A is installed on the lifting platform, and the solder gun is installed on the output shaft of the cylinder A with the gun head of the solder gun facing downward;

[0012] The clamp is sleeved on the outside of the solder gun, and the clamp and the connector are connected together through the bracket. The bracket and the connector are respectively provided with through holes, so that the tin wire coming out of the tin breaking machine can pass through the through holes of the bracket and the through holes of the connector in sequence. The connector is arranged corresponding to the position of the gun head of the solder gun, so that the gun head of the solder gun can melt the tin wire passing through the through holes of the connector.

[0013] Preferably, there are two groups of soldering units and they are symmetrically installed on the lifting platform. Correspondingly, there are also two soldering machines and they are installed on the supporting base.

[0014] Preferably, a vertical slide rail is installed on the support seat, and the lifting platform is installed on the slide rail.

[0015] Preferably, the rotating base further comprises a guide rail, a cylinder B, a rotating shaft, a push rod and a material-dispensing device, wherein:

[0016] The guide rail is horizontally mounted on the mounting platform, and a material blocking strip is provided along the length direction of the guide rail to block a carrier for carrying a coreless motor rotor that is transported to the guide rail by an external transport mechanism;

[0017] The cylinder B is mounted on the mounting platform, the rotating shaft is vertically arranged and rotatably mounted on the mounting platform, and the motor is connected to the rotating shaft;

[0018] The carrier positioning block has an inner cavity, and the carrier positioning block includes a top plate, a side connecting block and a bottom plate for receiving the carrier, the side connecting block connects the top plate and the bottom plate, and the bottom plate is provided with a through hole serving as a moving channel for the top rod;

[0019] The material shifting device comprises a material shifting block and a multi-axis motion platform, the material shifting block is mounted on the multi-axis motion platform, and a material shifting groove is provided on the material shifting block so as to shift the carrier on the guide rail so as to allow the carrier to extend into the inner cavity of the carrier positioning block;

[0020] The rotating shaft has a through hole that passes through the upper and lower parts. The rotating shaft and the push rod are coaxially arranged, and the push rod is movably installed inside the rotating shaft. The cylinder B is fixedly connected to the lower end of the push rod to drive the push rod to move up and down, so that when the push rod moves upward, the top end of the push rod cooperates with the top plate of the carrier positioning block to clamp the carrier, and when the push rod moves downward, the carrier is released from the clamping.

[0021] Preferably, a receiving hole is provided on the guide rail, and the carrier positioning block is located at the receiving hole.

[0022] Preferably, the carrier is provided with two mutually planar first guide surfaces, and correspondingly, the inner wall of the carrier positioning block is also provided with two mutually parallel second guide surfaces, and each of the second guide surfaces is respectively in contact with one of the first guide surfaces.

[0023] Preferably, the multi-axis moving platform is an XY-axis motion platform for driving the material shifting block to move horizontally.

[0024] Preferably, a receiving hole is provided on the guide rail, and the carrier positioning block is located at the receiving hole.

[0025] Preferably, a guide groove is arranged on the top plate throughout its length, and the guide groove is parallel to the guide rail;

[0026] There are two material shifting grooves on the material shifting block, and the two material shifting grooves are arranged along the length direction of the guide rail, so as to shift one of the carriers into the carrier positioning block and shift the other carrier out of the carrier positioning block at the same time.

[0027] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0028] 1) In the automatic welding equipment for hollow cup rotors of the present invention, a motor can drive the rotating shaft and the carrier positioning block on the rotating shaft to rotate, thereby rotating the carrier installed on the carrier positioning block and the hollow cup rotor carried on the carrier, so that the soldering device arranged above the rotating base can automatically weld the hollow cup rotor, thereby helping to realize the automation of welding.

[0029] 2) In the automatic welding equipment for the coreless cup motor rotor of the present invention, the tin-breaking machine can automatically feed the tin wire to the soldering gun, and the through holes on the bracket and the connector can guide the tin wire to realize two-point linear wire feeding, which is convenient for the soldering gun to melt the tin wire and realize soldering.

[0030] 3) In the automatic welding equipment for a coreless motor rotor of the present invention, a soldering gun is installed on the cylinder A, and the upper and lower positions can be adjusted by the movement of the cylinder A, so as to be more suitable for the welding of the wire cup and the commutator of the coreless rotor.

[0031] 4) In the automatic welding equipment for coreless rotors of the present invention, a push rod can extend from the through hole on the bottom plate of the carrier positioning block into the carrier positioning block to support the carrier, thereby cooperating with the top plate of the carrier positioning block to fix the carrier, to prevent the carrier from being misaligned along the radial direction of the rotating shaft when the rotating shaft drives the carrier positioning block to rotate, thereby affecting the normal welding of the hollow cup motor rotor by the soldering device above the rotating base.

[0032] 5) In the hollow cup rotor automatic welding equipment of the present invention, the material shifting block can be moved under the drive of the multi-axis motion platform to allow the carrier to enter the material shifting groove, thereby shifting the carrier into the carrier positioning block to realize the installation of the carrier, which is convenient for the soldering device above the rotating base to perform welding work.

[0033] 6) The automatic welding equipment for hollow cup rotors of the present invention can automatically and mechanically drive the carrier and the hollow cup motor rotor mounted on the carrier to rotate, and cooperate with the soldering device above the rotating base to realize the welding of a circle of wire ends on the wire cup of the hollow cup motor rotor and the commutator. It does not require manual operation, greatly liberates productivity, improves production efficiency, and effectively eliminates the risks of burns and the like caused by manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the present invention from another perspective;

[0036] Figure 3 is a schematic diagram of a rotating base of the present invention;

[0037] Figure 4 It is a partial schematic diagram of the cooperation between the photoelectric sensor and the sensing sheet in the present invention;

[0038] Figure 5 is a cross-sectional view of the rotating base in the present invention;

[0039] Figure 6 It is a schematic diagram of a carrier equipped with a coreless motor rotor according to the present invention installed on a carrier positioning block;

[0040] Figure 7 This is a schematic diagram of the wire ends of the wire cup on the carrier being welded together with the commutator. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Reference Figure 1 to Figure 7 , a welding device for an automated production line of a coreless motor rotor, comprising a soldering device and a rotating base, wherein:

[0043] The soldering device comprises a support seat, a tin-breaking machine 3 and a soldering gun 9 installed on the support seat, wherein the tin-breaking machine 3 is used to convey tin wire to the soldering gun 9;

[0044] The rotating base includes a mounting platform 35, a first motor 37, a carrier positioning block 42 and a rotating shaft 54. The first motor 37 and the carrier positioning block 42 are respectively mounted on the mounting platform 35. The rotating shaft 54 ​​is vertically arranged and rotatably mounted on the mounting platform 35. The first motor 37 is connected to the rotating shaft 54 ​​to drive the rotating shaft 54 ​​to rotate. The carrier positioning block 42 is fixedly mounted on the top of the rotating shaft 54, and the carrier positioning block 42 is located below the solder gun 9 to drive the carrier fixed on the carrier positioning block 42 for carrying the hollow cup motor rotor to rotate, so that the solder gun 9 can weld the commutator and a circle of wire ends of the wire cup of the hollow cup motor rotor together.

[0045] The soldering device further comprises a second motor 2, a screw mechanism, a lifting platform, a cylinder A7, a fixture 10, a bracket 11 and a connector 12, wherein the cylinder A7, the solder gun 9, the fixture 10, the bracket 11 and the connector 12 together constitute a soldering unit, wherein:

[0046] The second motor 2 and the tin-breaking machine 3 are respectively mounted on the support seat, and the output shaft of the second motor 2 is connected to the screw 26 of the screw mechanism. The output shaft of the second motor 2 is preferably connected to the screw 26 of the screw mechanism through a coupling 4, which is convenient for disassembly and assembly. The drive nut 27 of the screw mechanism is installed on the screw 26 to convert the spiral motion of the screw 26 into linear motion. The drive nut 27 of the screw mechanism is connected to the lifting platform to drive the lifting platform to move up and down; the output shaft of the second motor 2 is connected to an encoder 1, which can accurately control the rotation of the screw 26 and the up and down movement of the drive nut 27. The tin-breaking machine 3 can press a small hole on the tin wire, improve the welding environment, make the flux vaporize when heated, overflow from the hole, enhance the solderability and fluidity of the solder, and prevent the occurrence of the "tin explosion" phenomenon. After placing the wire-winding reel with tin wire on the tin-breaking machine 3, the tin wire can come out of the tin-breaking machine 3 to realize automatic tin wire feeding.

[0047] The cylinder A7 is installed on the lifting platform, and the solder gun 9 is installed on the output shaft of the cylinder A7, and the head of the solder gun 9 is facing downward; the head of the solder gun 9 is preferably tilted relative to the horizontal plane. The up and down movement of the lifting platform can drive the solder gun 9 to move up and down. The cylinder A7 is preferably a slide cylinder, and the solder gun 9 is installed on its slide 8. The slide cylinder can achieve high precision and high stability in the movement of the solder gun 9.

[0048] The clamp 10 is sleeved on the outside of the solder gun 9. The clamp 10 is preferably a clamp sleeved on the outside of the solder gun 9, so that it is convenient to install the clamp 10 on the outside of the solder gun 9. The clamp 10 and the connector 12 are connected together through the bracket 11. The bracket 11 and the connector 12 are respectively provided with through holes, so that the tin wire coming out of the tin breaking machine 3 can pass through the through hole of the bracket 11 and the through hole of the connector 12 in turn. The two supporting points formed by the two through holes can keep the tin wire passing through relatively stable and not easy to shake. The connector 12 is arranged corresponding to the position of the gun head of the solder gun 9, so that the gun head of the solder gun 9 can melt the tin wire passing through the through hole of the connector 12. The tin wire can be automatically fed through the tin breaking machine 3. The solder gun 9 melts the tin wire while the tin breaking machine 3 feeds the tin wire through the through hole of the bracket 11 and the through hole of the connector 12, so that automatic welding can be realized. The welding speed of the soldering gun 9 matches the feeding speed of the solder wire by the soldering machine 3. The wire ends of the wire cup have been bonded to the commutator after the previous process. The soldering gun 9 melts the tin wire at high temperature and welds a circle of wire ends of the wire cup to the commutator.

[0049] Furthermore, a vertical slide rail 5 is installed on the support seat, and the lifting platform is installed on the slide rail 5 to maintain the stability of the lifting platform.

[0050] Furthermore, an induction sheet 28 is installed on the lifting platform, and a photoelectric sensor 24 is installed on the support seat. The induction sheet 28 works together with the photoelectric sensor 24 installed on the support seat to feedback the current position of the transmission nut 27, and cooperates with the encoder 1 on the second motor 2 to accurately control the position of the transmission nut 27.

[0051] Furthermore, the soldering units have two groups and they are symmetrically installed on the lifting platform. Correspondingly, the soldering machines 3 also have two groups and they are installed on the support seat. Since there is a circle of wire ends on the wire cup that needs to be welded with the commutator, the soldering efficiency can be improved by using two sets of soldering units and soldering machines 3. Two sets of soldering guns 9 can be welded at the same time to improve work efficiency.

[0052] Furthermore, the second motor 2 is a reduction motor having a gearbox 25 structure, and the lead screw 26 is coaxially connected to the output shaft of the gearbox 25 of the second motor 2 through a coupling 4 .

[0053] Reference Figure 2 The support seat includes a fixed seat 33, a fixed platform 32 installed on the fixed seat 33, and a mounting bracket 58 installed on the fixed platform 32. The mounting bracket 58 is fixedly mounted on a vertical connecting plate 59, and the connecting plate 59 is fixedly mounted on the fixed platform 32. The lead screw 26 is integrally mounted on the fixed platform 32. The lifting platform includes a first mounting block 29, a second mounting block 30, a third mounting block 31 and a mounting plate 6. The first mounting block 29 is fixedly mounted on the transmission nut 27, and the first mounting block 29 is mounted on the sensor sheet 28. The sensor sheet 28 works together with the photoelectric sensor 24 installed on the mounting bracket 58 of the support seat to feedback the current position of the transmission nut 27. The first mounting block 29 and the second mounting block 30 clamp the guide rail, the third mounting block 31 is fixedly mounted on the mounting block 30, the mounting plate 6 is fixedly mounted on the third mounting block 31, and the cylinder A7 is fixedly mounted on the mounting plate 6. Two symmetrical cylinders A7 are integrally arranged on the driving nut 27. Two sets of soldering guns 9, brackets 11 and connectors 12 stacked on the left and right are respectively installed on the slides of the cylinders A7. The soldering guns 9 and the brackets 11 and connectors 12 on the soldering guns 9 are driven by the cylinders A7 to move up and down.

[0054] The rotating base further comprises a guide rail 48, a cylinder B18, a rotating shaft 54, a push rod 56 and a material-dispensing device, wherein:

[0055] The guide rail 48 is horizontally mounted on the mounting platform 35, preferably mounted on the mounting platform 35 via a mounting seat 49, and a blocking strip 47 is provided along the length direction of the guide rail 48 to block the carrier 15 for carrying the hollow cup motor rotor that is transported to the guide rail 48 by an external transport mechanism; the external transport mechanism can be a conveyor belt or a robot. If it is a conveyor belt, the conveyor belt is perpendicular to the guide rail 48, and the front carrier 15 is transported to the guide rail 48 in a direction perpendicular to the guide rail 48. Since the front carrier 15 is blocked by the blocking strip 47, the following carriers 15 are queued on the transport mechanism and have to wait for the front carrier 15 to be sent away before they can be transported to the guide rail 48 in order.

[0056] The cylinder B18 is installed on the mounting platform 35 , the rotating shaft 54 ​​is vertically arranged and rotatably installed on the mounting platform 35 , and the first motor 37 is connected to the rotating shaft 54 ​​.

[0057] The carrier positioning block 42 has an inner cavity, and includes a top plate 421, a side connection block 422, and a bottom plate 423 for receiving the carrier 15. The side connection block 422 connects the top plate 421 and the bottom plate 423. The bottom plate 423 is provided with a through hole as a moving channel for the top rod. The top plate 421, the side connection block 422, and the bottom plate 422 are preferably integrally formed.

[0058] The material shifting device includes a material shifting block 23 and a multi-axis motion platform, the material shifting block 23 is installed on the multi-axis motion platform, and a material shifting groove is provided on the material shifting block 23 so as to shift the carrier 15 on the guide rail 48, so that the carrier 15 can extend into the inner cavity of the carrier positioning block 42 and be received by the bottom plate 423 of the carrier positioning block 42, then the carrier 15 can be placed on the bottom plate 423 of the carrier positioning block 42, and preferably the base 44 of the carrier 15 enters the inner cavity of the carrier positioning block 42.

[0059] The carrier 15 has many structural forms, as long as it can carry the hollow cup motor rotor. After the hollow cup motor rotor composed of the coil, the rotor frame and the commutator 45 is placed on the carrier 15, the soldering device above the rotating base can perform welding operations on the hollow cup motor rotor.

[0060] The rotating shaft 54 ​​has a through hole that passes through from top to bottom. The rotating shaft 54 ​​and the push rod 56 are coaxially arranged, and the push rod 56 is movably installed inside the rotating shaft 54, that is, the rotating shaft 54 ​​and the push rod 56 are not fixed, and the two can have relative movement. The cylinder B18 is fixedly connected to the lower end of the push rod 56 to drive the push rod 56 to move up and down, so that when the push rod 56 moves upward, the top end of the push rod 56 cooperates with the top plate 421 of the carrier positioning block 42 to clamp the carrier 15, and when the push rod 56 moves downward, it is convenient to release the clamping of the carrier 15. The lower end of the push rod 56 preferably exceeds the lower end of the rotating shaft 54, so that the cylinder B18 is connected to the push rod 56. When the push rod 56 moves upward, the carrier 15 is pressed against the top plate 421, so that the carrier 15 cannot move. In this way, when the rotating shaft 54 ​​drives the carrier positioning block 42 and the carrier 15 to rotate together, the carrier 15 will not shift, thereby not affecting the soldering work of the soldering device above the rotating base on the hollow cup motor rotor.

[0061] The cylinder B18 has a push rod 19, which is connected to the push rod 56 through a push rod connector 57. The push rod 19 is pushed upward to drive the push rod 56 to move upward. The cylinder B18 is fixedly mounted on the mounting platform 35 through a mounting block.

[0062] Furthermore, the top plate 421 is provided with a guide groove 4211, and the guide groove 4211 is parallel to the guide rail 48, so that the carrier 15 moves along the guide groove 4211 to the carrier positioning block 42. If a portion of the carrier 15 extends upward beyond the top plate 421, the guide groove 4211 can well adapt to the shape of the carrier 15, so that the carrier 15 can still enter the inner cavity of the carrier positioning block 42.

[0063] Furthermore, the carrier 15 is provided with two mutually parallel first guide surfaces, and correspondingly, the inner wall of the carrier positioning block 42 is also provided with two mutually parallel second guide surfaces, and each of the second guide surfaces is respectively fitted with one of the first guide surfaces. If the carrier 15 and the carrier positioning block 42 have cylindrical structures, the first guide surface and the second guide surface are respectively formed into flat positions, and the two guide surfaces can make the flat positions fit together well, and can also prevent the carrier 15 from having rotational displacement when the carrier positioning block 42 drives the carrier 15 to rotate, thereby affecting the normal welding of the hollow cup motor rotor by the soldering device.

[0064] Further, the first motor 37 is connected to the rotating shaft 54 ​​through a gear mechanism, and the gear mechanism includes a driving gear 16 and a driven gear 17, and the driving gear 16 and the driven gear 17 are meshed with each other, so the driving gear 16 is installed on the output shaft of the first motor 37, and the driven gear 17 is fixedly installed on the rotating shaft 54. The driven gear 17 drives the rotating shaft 54 ​​to rotate, and the rotating shaft 54 ​​drives the carrier positioning block 42 to rotate, and the carrier positioning block 42 drives the carrier 15 to rotate, and the carrier 15 drives the spool 14 on the carrier 15 and the hollow cup motor rotor to rotate. The induction sheet 39 is arranged above the driven gear 17.

[0065] Furthermore, the multi-axis moving platform is an XY-axis motion platform, which is used to drive the material shifting block 23 to move horizontally, wherein one axis is parallel to the guide rail 48 and the other axis is perpendicular to the guide rail 48. When the material shifting block 23 moves in a direction perpendicular to the guide rail 48, the material shifting groove can be stuck on the carrier 15. When it moves in a direction parallel to the guide rail 48, the carrier 15 can be moved, so that the carrier 15 moves along the length direction of the guide rail 48 to extend into the inner cavity of the carrier positioning block 42.

[0066] Reference Figure 1 The XY axis motion platform includes a cylinder C38, a slider, a mounting frame 22, a second slider 20 and a cylinder D21. The material-pickup block 23 is fixedly mounted on the mounting frame 22, and the mounting frame 22 is fixedly mounted on the first slider 381. The first slider 381 is pushed by the cylinder C38, and the cylinder C38 pushes the first slider 381 to move forward and backward. The forward and backward movement of the first slider 381 drives the mounting frame 22 fixedly connected to the first slider 381 to move forward and backward, and the forward and backward movement of the mounting frame 22 drives the forward and backward movement of the material-pickup block 23. At the same time, the cylinder C38 is fixedly installed on the second slider 20, and the second slider 20 is pushed by the cylinder D21, and the cylinder D21 is fixedly installed on the mounting platform 35. The cylinder D21 pushes the second slider 20 to move left and right, and the cylinder C38 fixedly installed with the second slider 20 moves left and right. At the same time, it drives the material shifting block 23 to move left and right, so that the material shifting block 23 can achieve the functions of moving forward, right, backward, and left, and the carrier 15 carrying the wire cup 14 and the rotor frame that have not yet been welded is moved to the bottom of the solder gun for welding operation.

[0067] Furthermore, the present invention further comprises an encoder, a photoelectric sensor 40 and a sensing block, wherein the encoder is connected to the output shaft of the first motor 37, and the photoelectric sensor 40 and the sensing block are respectively mounted on the mounting platform 35 and the rotating shaft 54, so as to obtain the rotation information of the rotating shaft 54. The encoder can obtain the rotation angle of the rotating shaft 54, and the photoelectric sensor 40 and the sensing block can cooperate to obtain the initial position of the rotating shaft 54, and the encoder, the photoelectric sensor 40 and the sensing block can cooperate to obtain the rotation position of the rotating shaft 54.

[0068] Furthermore, the rotating shaft 54 ​​is mounted on the mounting platform 35 through a bearing, and an external thread is provided on the outer wall of the rotating shaft 54. The locking nut 53 is connected to the external thread of the rotating shaft 54, thereby locking the rotating shaft 54 ​​on the inner ring of the bearing to prevent axial shaking when the rotating shaft 54 ​​rotates. The rotating shaft 54 ​​is relatively long and is mounted on the mounting platform 35 through two bearings, namely a first bearing 51 and a second bearing 55. The first bearing 51 is above the second bearing 55, and the locking nut 53 locks the rotating shaft 54 ​​on the inner ring of the first bearing 51.

[0069] Furthermore, a receiving hole is provided on the guide rail 48, and the carrier positioning block 42 is located at the receiving hole. Then, the carrier positioning block 42 divides the guide rail 48 into two sections, one section is used to allow the carrier 15 to enter the carrier positioning block 42, and the other section is used to allow the carrier 15 that has completed the welding process to leave the carrier positioning block 42 and move to the next process.

[0070] Furthermore, the plane of the bottom plate 423 for carrying the carrier 15 is coplanar with the plane of the guide rail 48 for carrying the carrier 15 , which facilitates the carrier 15 on the guide rail 48 to enter and exit the carrier positioning block 42 .

[0071] Furthermore, the guide groove 4211 on the top plate 421 is arranged throughout the length, and there are two material shifting grooves on the material shifting block 23, and the two material shifting grooves are arranged along the length direction of the guide rail 48, so as to be used to shift one of the carriers 15 into the carrier positioning block 42 and shift the other carrier 15 out of the carrier positioning block 42 at the same time.

[0072] The base rotating device is integrally arranged below the soldering gun of the soldering device. The first motor 37 is preferably a reduction first motor 37, which has a gear box 36. The driving gear 16 is fixedly mounted on the output shaft of the gear box 36. The first motor 37 is connected to an encoder to form a closed-loop control. The gear box 36 is fixedly mounted on the flange 41 and fixedly mounted with the mounting platform 35 through the flange 41. The rotating shaft 54 ​​is fixedly mounted on the mounting platform 35 through a bearing. A plurality of support columns 34 are respectively arranged around the mounting platform 35 for mounting with the table of the production line.

[0073] A locking nut 53 is arranged above the induction sheet 39, and a bearing and a bearing support ring 50 are arranged at the upper end of the locking nut 53. The bearing and the bearing support ring 50 are arranged inside the bearing seat 52, and the bearing seat 52 is installed on the mounting platform 35. The carrier positioning block 42 is arranged at the upper end of the rotating shaft 54 ​​and is fixedly installed with the rotating shaft 54. The wire cup 14 and the rotor of the hollow cup first motor 37 are arranged on the carrier 15 at the same time. The outer side of the rotor shaft 43 of the hollow cup first motor 37 is provided with a protective sleeve 13. The protective sleeve 13 is used to protect the commutator 45. In the case of high-temperature welding, the tin beads and rosin will not splash into the slots of the commutator 45 to prevent the generation of defective products.

[0074] The working process of the present invention is as follows:

[0075] Reference Figure 1 After the second motor 2 is powered on, it rotates, driving the lead screw 26 to rotate. The rotation of the lead screw 26 drives the transmission nut 27 meshing therewith to move downward, thereby driving the soldering gun 9 fixedly mounted on the transmission nut 27 to move downward. The position of the transmission nut 27 is determined by the induction sheet 28 and the photoelectric sensor 24. When the transmission nut 27 drops to the set position, the second motor 2 is powered off, and the transmission nut 27 is stopped at the current position through the self-locking mode of the lead screw 26 and the transmission nut 27.

[0076] Reference Figure 1 , the cylinder C38 pushes the first slider 381 forward, driving the material-dispensing block 23 installed with the first slider 381 to move forward, and the material-dispensing groove on the material-dispensing block 23 is stuck on the carrier 15. Then, the cylinder D21 pushes the second slider 20 to move rightward, and the movement of the second slider 20 drives the material-dispensing block 23 to move rightward. Under the push of the cylinder D21, the material-dispensing block 23 drives the carrier 15 to move rightward. The flat part of the carrier 15 is loaded into the carrier positioning block 42, and at the same time, the cylinder B18 pushes the push rod 19 upward, and the push rod 19 pushes the push rod 56 through the connector 57, so that the push rod 56 moves upward, supports the mold center of the carrier 15, and fixes the carrier 15 between the carrier positioning blocks 42. At the same time, the material-dispensing block 23 retreats backward, moves to the left, and returns to the initial position.

[0077] After the rotating base 20 under the soldering device sends the carrier to the bottom of the solder gun 9, the cylinders A7 distributed on both sides of the lead screw 26 push the slide 8 to move downward, and the solder gun 9 installed on the slide 8 and the bracket 11 and connector 12 for loading the solder wire all move downward. After the pair of solder guns 9 are powered on, the two wire ends in the wire cup 14 are welded together with the commutator 45 ( Figure 6 The thread head is upright, and the horizontally moving external pressure head first presses to Figure 7 After welding, the pair of soldering guns 9 are retracted.

[0078] The first motor 37 drives the driving gear 16 to rotate, and then drives the driven gear 17 meshing with the driving gear 16 to rotate. The rotation of the driven gear 17 drives the rotating shaft 54 ​​fixedly mounted with the driven gear 17 to rotate. The rotation of the rotating shaft 54 ​​drives the induction sheet 39 installed on the rotating shaft 54 ​​to rotate, and at the same time drives the carrier positioning block 42 to rotate. The carrier positioning block 42 drives the carrier 15 to rotate. The rotation angle of the rotating shaft 54 ​​is determined by the induction sheet 39 and the photoelectric sensor 40. Since the position of the thread end is generally odd, when there is only one unwelded thread end left, the solder gun will be on one side next time, so that each thread end of the wire cup 14 is welded to the commutator 45.

[0079] After welding is completed, the push rod 19 falls back, pulling the ejector rod 56 back, and the ejector rod 56 releases the clamping of the carrier 15, so that the material shifting block 23 of the next process can smoothly shift the carrier 15 away from the carrier positioning block 42.

[0080] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding device for an automated production line of coreless motor rotors, characterized in that: It includes a soldering device and a rotating base, wherein: The soldering device comprises a support seat, a tin-breaking machine and a soldering gun installed on the support seat, wherein the tin-breaking machine is used to convey tin wire to the soldering gun; The rotating base includes a mounting platform, a first motor, a carrier positioning block and a rotating shaft, wherein the first motor and the carrier positioning block are respectively mounted on the mounting platform, the rotating shaft is vertically arranged and rotatably mounted on the mounting platform, the first motor is connected to the rotating shaft to drive the rotating shaft to rotate, the carrier positioning block is fixedly mounted on the top of the rotating shaft, and the carrier positioning block is located below the solder gun to drive the carrier fixed on the carrier positioning block and used for carrying the hollow cup motor rotor to rotate, so that the solder gun can weld a circle of wire ends of the wire cup of the hollow cup motor rotor to the commutator.

2. The welding equipment for the hollow cup motor rotor automatic production line according to claim 1 is characterized in that: The soldering device further comprises a second motor, a screw mechanism, a lifting platform, a cylinder A, a fixture, a bracket and a connector, and the cylinder A, the solder gun, the fixture, the bracket and the connector together constitute a soldering unit, wherein: The second motor is mounted on the support seat, and the output shaft of the second motor is connected to the lead screw of the lead screw mechanism, and the transmission nut of the lead screw mechanism is connected to the lifting platform to drive the lifting platform to move up and down; The cylinder A is installed on the lifting platform, and the solder gun is installed on the output shaft of the cylinder A with the gun head of the solder gun facing downward; The clamp is sleeved on the outside of the solder gun, and the clamp and the connector are connected together through the bracket. The bracket and the connector are respectively provided with through holes, so that the tin wire coming out of the tin breaking machine can pass through the through holes of the bracket and the through holes of the connector in sequence. The connector is arranged corresponding to the position of the gun head of the solder gun, so that the gun head of the solder gun can melt the tin wire passing through the through holes of the connector.

3. The welding equipment for the hollow cup motor rotor automatic production line according to claim 2 is characterized in that: There are two groups of soldering units and they are symmetrically installed on the lifting platform. Correspondingly, there are also two soldering machines and they are installed on the supporting base.

4. The welding equipment for the hollow cup motor rotor automatic production line according to claim 2 is characterized in that: A vertical slide rail is installed on the support seat, and the lifting platform is installed on the slide rail.

5. The welding equipment for the hollow cup motor rotor automatic production line according to claim 1 is characterized in that: The rotating base also includes a guide rail, a cylinder B, a rotating shaft, a push rod and a material-discharging device, wherein: The guide rail is horizontally mounted on the mounting platform, and a material blocking strip is provided along the length direction of the guide rail to block a carrier for carrying a coreless motor rotor that is transported to the guide rail by an external transport mechanism; The cylinder is mounted on the mounting platform; The carrier positioning block has an inner cavity, and the carrier positioning block includes a top plate, a side connecting block and a bottom plate for receiving the carrier, the side connecting block connects the top plate and the bottom plate, and the bottom plate is provided with a through hole serving as a moving channel for the top rod; The material shifting device comprises a material shifting block and a multi-axis motion platform, the material shifting block is mounted on the multi-axis motion platform, and a material shifting groove is provided on the material shifting block so as to shift the carrier on the guide rail so as to allow the carrier to extend into the inner cavity of the carrier positioning block; The rotating shaft has a through hole that passes through the upper and lower parts. The rotating shaft and the push rod are coaxially arranged, and the push rod is movably installed inside the rotating shaft. The cylinder B is fixedly connected to the lower end of the push rod to drive the push rod to move up and down, so that when the push rod moves upward, the top end of the push rod cooperates with the top plate of the carrier positioning block to clamp the carrier, and when the push rod moves downward, the carrier is released from the clamping.

6. The welding equipment for the hollow cup motor rotor automatic production line according to claim 5 is characterized in that: The guide rail is provided with a receiving hole, and the carrier positioning block is located at the receiving hole.

7. The welding equipment for the hollow cup motor rotor automatic production line according to claim 5 is characterized in that: The carrier is provided with two mutually planar first guide surfaces, and correspondingly, the inner wall of the carrier positioning block is also provided with two mutually parallel second guide surfaces, and each of the second guide surfaces is respectively in contact with one of the first guide surfaces.

8. The welding equipment for the hollow cup motor rotor automatic production line according to claim 5 is characterized in that: The multi-axis moving platform is an XY axis motion platform, which is used to drive the material shifting block to move horizontally.

9. The welding equipment for the hollow cup motor rotor automatic production line according to claim 5 is characterized in that: The guide rail is provided with a receiving hole, and the carrier positioning block is located at the receiving hole.

10. The welding equipment for the hollow cup motor rotor automatic production line according to claim 5, characterized in that: A guide groove is arranged on the top plate throughout its length, and the guide groove is parallel to the guide rail; There are two material shifting grooves on the material shifting block, and the two material shifting grooves are arranged along the length direction of the guide rail, so as to shift one of the carriers into the carrier positioning block and shift the other carrier out of the carrier positioning block at the same time.

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