Voice coil welding line machine

Abstract

The present application relates to the field of voice coil welding, and particularly discloses a voice coil welding line machine, which comprises a machine table, a control device, a feeding device, an angle adjusting device, a welding device, a flow transfer device and a discharging device; the flow transfer device comprises a first driving mechanism, a flow transfer disc and a limiting piece, the limiting piece is used for bearing a positioning jig, and the positioning jig is used for sleeving a coil; the first driving mechanism is used for driving the flow transfer disc to rotate so that the flow transfer disc is indexed and transferred among the angle adjusting device, the welding device and the discharging device; the feeding device is used for moving and transferring the positioning jig with the coil wound thereon to the limiting piece; the angle adjusting device comprises a second driving mechanism and a first position sensor; the first position sensor detects an end position signal of the coil wound on the positioning jig and uploads the position signal to the control device; the control device controls the second driving mechanism to drive the limited positioning jig to rotate, so that the end of the coil is located at a preset position; and the welding device is used for welding a conductive terminal wire to the end of the coil.

Description

Technical Field

[0001] This invention relates to the field of voice coil welding, and in particular discloses a voice coil wire welding machine. Background Technology

[0002] Currently, in the manufacturing of voice coils, it is necessary to reliably solder the extremely fine enameled wire leads to external conductive terminals. Traditional manual operations or semi-automatic simple equipment often rely on manual visual inspection and manual rotation of fixtures for alignment when dealing with the extremely fine leads of the voice coil. This manual operation method not only requires extremely high operator skills but is also prone to causing the coil ends to deviate from the expected soldering position, resulting in serious quality problems such as misaligned soldering and cold solder joints. At the same time, this reliance on manual positioning greatly limits the production efficiency of single machines and makes it difficult to meet the industry's growing demand for large-scale, high-precision automated mass production. Summary of the Invention

[0003] To overcome the technical problems of misaligned welding and false welding in existing voice coil welding technology, this invention provides an automated welding wire machine for loudspeaker voice coil manufacturing.

[0004] To achieve the above objectives, the present invention provides a voice coil wire bonding machine, comprising a machine base, a control device, a feeding device, an angle adjustment device, a welding device, a transfer device, and a unloading device, all mounted on the machine base and electrically connected to the control device. The transfer device includes a first drive mechanism, a transfer disk mounted at the output end of the first drive mechanism, and a limiting member mounted on the transfer disk. The limiting member is used to support a positioning fixture, which is used to mount the coil. The first drive mechanism is used to drive the transfer disk to rotate, causing the positioning fixture to rotate indexably between the angle adjustment device, the welding device, and the unloading device, thereby realizing the feeding, welding, and unloading actions. The feeding device is used to transport a positioning fixture with a coil wound on it and move the positioning fixture to the limiting member; the angle adjustment device includes a second drive mechanism and a first position sensor. The first position sensor is used to detect the end position signal of the coil wound on the positioning fixture and upload the position signal to the control device. The control device regulates the second drive mechanism to approach and drive the positioning fixture limited by the limiting member to rotate so that the end of the coil is in a preset position; the welding device includes a wire feeding mechanism and a welding mechanism. The wire feeding mechanism is used to feed a conductive terminal wire to the welding mechanism, and the welding mechanism is used to weld the conductive terminal wire to the end of the coil in the preset position.

[0005] Furthermore, the outer periphery of the limiting member is provided with an axially extending anti-rotation key, and the inner hole of the positioning fixture is provided with a keyway adapted to the anti-rotation key. The limiting member and the positioning fixture achieve circumferential limiting through the sliding engagement of the anti-rotation key and the keyway, and the anti-rotation key has an axial length greater than the sliding stroke of the positioning fixture to allow the positioning fixture to slide freely along the axial direction of the limiting member.

[0006] Furthermore, the positioning fixture or the limiting member is also provided with an elastic anti-detachment component. The elastic anti-detachment component is used to provide axial anti-detachment force to prevent the positioning fixture from slipping axially under the action of centrifugal force when the turntable rotates. At the same time, the anti-detachment force of the elastic anti-detachment component is less than the pulling force of the unloading robot.

[0007] Furthermore, two sets of angle adjustment devices and welding devices are provided; along the rotation direction of the turntable, the feeding device, the first set of angle adjustment devices, the first set of welding devices, the second set of angle adjustment devices, the second set of welding devices, and the unloading device are arranged in sequence; multiple limiting members are provided, and the multiple limiting members are arranged around the rotation axis of the turntable, and the number of limiting members is greater than or equal to the total number of the feeding device, angle adjustment device, welding device, and unloading device.

[0008] Furthermore, the limiting member is a column rotatably disposed on the edge of the turntable; the positioning fixture is provided with a positioning groove, and the coil is used to be wound around the outer periphery of the positioning fixture. The positioning groove of the positioning fixture is sleeved on the column under the drive of the feeding device; the second driving mechanism is used to drive the positioning fixture together with the column to rotate, so as to rotate the end of the coil to a preset position.

[0009] Furthermore, the loading device includes a first conveyor line and a loading robot arm disposed on one side of the first conveyor line; the loading robot arm includes a first traverse module, a first lifting module disposed at the output end of the first traverse module, a first rotary drive module disposed at the output end of the first lifting module, and a gripper cylinder disposed at the output end of the first rotary drive module, the output end of the gripper cylinder being provided with an execution finger for picking up and placing positioning fixtures.

[0010] Furthermore, the unloading device includes a second conveyor line and an unloading robot arm disposed on one side of the second conveyor line; the second conveyor line has the same structure as the first conveyor line; the unloading robot arm has the same structure as the loading robot arm.

[0011] Furthermore, the machine base is also provided with a fixed plate, which is located above the turntable and has a diameter smaller than that of the turntable; the first position sensor is located on the edge of the fixed plate and the detection end of the first position sensor is set towards the limiting member to detect the position of the coil end on the positioning fixture carried by the limiting member.

[0012] Furthermore, the second drive mechanism includes a second transverse module, a second motor disposed at the output end of the second transverse module, and an execution component disposed at the output end of the second motor; the second transverse module is used to drive the second motor to approach the positioning fixture on the turntable, so that the execution component and the positioning fixture are in transmission cooperation; the second motor is used to drive the execution component to rotate the positioning fixture, so that the end of the coil on the positioning fixture rotates to a preset position.

[0013] Furthermore, the actuator at the output end of the second motor in the angle adjustment mechanism also employs a sliding keyway structure. The actuator is a transmission sleeve, and the inner hole of the transmission sleeve has a transmission keyway; the tail end of the positioning fixture has a transmission key that matches the transmission keyway. When the control device adjusts the second motor to drive the actuator, the groove wall of the transmission keyway abuts against the side wall of the transmission key to transmit torque, thereby driving the positioning fixture to rotate.

[0014] The transmission sleeve maintains a clearance sliding fit with the tail end of the positioning fixture. When the second traverse module drives the second motor away from the positioning fixture, the transmission sleeve disengages from the tail end of the positioning fixture. At this time, because the fixture is held on the limiting member by the elastic anti-detachment component, no axial pulling force is generated when the transmission sleeve moves out, ensuring that the fixture remains stably in its original position. When transferred to the unloading station, the unloading robot applies a pulling force to overcome the restraint of the anti-detachment component, and the fixture can be easily removed, achieving efficient and stable circulation.

[0015] Furthermore, the welding mechanism includes a gantry frame, a solder wire feeding assembly mounted on the gantry frame, a third traverse module, a second lifting module mounted on the output end of the third traverse module, a third lifting module mounted on the output end of the second lifting module, a welding gun assembly mounted on the output end of the third lifting module, and a solder nozzle; the solder wire feeding assembly is used to feed solder wire to the solder nozzle; the third lifting module, driven by the third traverse module and the second lifting module, drives the welding gun assembly to press down, so that the conductive terminal wire is in contact with the end of the coil at the welding position, and the welding gun assembly is used to weld and fix the conductive terminal wire to the end of the coil.

[0016] Preferably, the gantry is also equipped with a slag tube, which is connected to a vacuum suction system. The slag suction port of the slag tube is positioned close to and facing the welding head and the solder outlet of the solder nozzle of the welding torch assembly to collect the slag generated during welding.

[0017] Furthermore, the first drive mechanism includes a first motor, a reducer disposed at the output end of the first motor, and a zero-point detection unit for determining the rotation reference position of the turntable; the zero-point detection unit includes a fan-shaped recognition disk and a second position sensor, the fan-shaped recognition disk is disposed on the output shaft of the first motor or the reducer, the outer periphery of the fan-shaped recognition disk is provided with a notch, the second position sensor is correspondingly engaged with the fan-shaped recognition disk, and is used to trigger a positioning signal when the notch of the fan-shaped recognition disk rotates to a preset position; the control device receives the positioning signal and controls the first motor to perform the turntable's start-up and zero-return action and indexing rotation action.

[0018] Furthermore, the wire feeding mechanism includes a stand, an unwinding reel rotatably mounted on the stand, a wire pulling assembly that cooperates with the unwinding reel, and a wire cutting assembly that cooperates with the wire pulling assembly; the wire cutting assembly includes a fourth transverse moving module, a fifth transverse moving module disposed at the output end of the fourth transverse moving module, and a wire cutting blade disposed at the output end of the fifth transverse moving module; the moving directions of the fourth transverse moving module and the fifth transverse moving module are parallel; The unwinding reel is used to unwind the conductive terminal wire coil to the wire pulling assembly, which is used to straighten the conductive terminal wire unwound by the unwinding reel. The conductive terminal wire unwound by the unwinding reel is guided by the wire pulling assembly to the preset welding position of the welding device. The output end of the fourth transverse module is also equipped with a bearing cylinder, and the output end of the bearing cylinder is equipped with a bearing frame. The bearing cylinder is used to drive the bearing frame to rise and fall to support the positioning fixture or to detach from the positioning fixture in order to cooperate with the welding mechanism to perform welding operations.

[0019] Preferably, the wire pulling assembly includes a sixth transverse module disposed at the output end of the fourth transverse module, a clamping cylinder disposed at the output end of the sixth transverse module, a guide tube disposed at the output end of the clamping cylinder, and a clamping cylinder for clamping the conductive terminal wire; the moving directions of the fourth transverse module and the sixth transverse module intersect each other; the wire pulling assembly also includes a tension roller and a wire guide plate, the wire guide plate having a wire guide hole, the diameter of the wire guide hole being smaller than the diameter of the conductive terminal wire; the conductive terminal wire unwound by the unwinding reel passes sequentially through the tension roller, the wire guide plate, and the clamping cylinder, and then passes through the guide tube, and is guided by the guide tube to the preset welding position of the welding device.

[0020] The beneficial effects of this invention are as follows: This invention provides a voice coil wire welding machine. The equipment drives a turntable to perform indexing and circulation via a first drive mechanism, causing the positioning fixture carrying the coil to sequentially rotate to different stations such as feeding and angle adjustment. At the angle adjustment station, a first position sensor detects the offset signal of the coil end on the positioning fixture in real time and feeds it back to the control device. The control device then regulates the second drive mechanism, which drives the second motor and transmission components to approach the fixture via a lateral movement module, and precisely drives the fixture on the limit post to rotate until the coil end automatically reaches the preset precise welding position. Subsequently, the wire feeding mechanism delivers the conductive terminal wire to the welding station, where the welding gun assembly of the welding mechanism fits into the coil's arc trajectory to complete the automated end bridging welding. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the voice coil wire bonding machine of the present invention; Figure 2 This is a plan view of the voice coil wire bonding machine of the present invention; Figure 3 This is a schematic diagram of the feeding device of the present invention; Figure 4 This is a schematic diagram of the welding apparatus of the present invention; Figure 5 This is a schematic diagram of the welding mechanism of the present invention; Figure 6 This is a schematic diagram of the wire feeding mechanism of the present invention; Figure 7 This is a schematic diagram of the flow device and angle adjustment device of the present invention; Figure 8 for Figure 7 A magnified structural diagram of part A in the middle.

[0022] The reference numerals in the figures include: 100. Machine base; 200. Positioning fixture; 1. Control device; 2. Feeding device; 3. Angle adjustment device; 4. Welding device; 5. Transfer device; 6. Unloading device; 7. Fixed plate; 21. First conveyor line; 22. Feeding robot; 221. First transverse module; 222. First lifting module; 223. First rotary drive module; 224. Gripper cylinder; 225. Actuating finger; 31. Second drive mechanism; 311. Second transverse module; 312. Second motor; 313. Actuating component; 32. First position sensor; 41. Wire feeding mechanism; 411. Stand; 412. Unwinding reel; 413. Wire pulling assembly; 4131. Sixth transverse module; 4132. Pipe clamping cylinder; 4133. Guide tube; 4134. Wire clamping cylinder 4135. Cylinder; 4136. Tensioning roller; 4137. Wire guide plate; 418. Wire cutting assembly; 419. Fourth transverse module; 410. Fifth transverse module; 411. Wire cutting knife; 411. Bearing cylinder; 412. Bearing frame; 43. Welding mechanism; 44. Gantry frame; 45. Solder wire feeding assembly; 46. Third transverse module; 47. Solder gun assembly; 48. Solder nozzle; 49. Solder dross tube; 51. First drive mechanism; 512. First motor; 513. Reducer; 514. Zero point detection unit; 515. Fan-shaped recognition disk; 515. Notch; 516. Second position sensor; 517. Turntable; 518. Limiting component; 61. Second conveyor line; 62. Unloading robot. Detailed Implementation

[0023] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0024] Please see Figures 1 to 8As shown, the voice coil welding wire machine of the present invention includes a machine base 100 and a control device 1. The machine base 100 serves as the support base for all workstation components. The control device 1 adopts a PLC industrial control host with a touch screen operation screen. It is connected to the feeding device 2, angle adjustment device 3, welding device 4, transfer device 5, and unloading device 6 through multiple sets of shielded cables to realize electrical signals and power control. The transfer device 5 is assembled in the middle area of ​​the machine base 100. It is powered by the first drive mechanism 51. The output end of the first drive mechanism 51 is rigidly equipped with a transfer disk 52. Multiple sets of limiting members 53 are evenly distributed on the circumference of the transfer disk 52. The positioning fixture 200 is detachably mounted on the limiting member 53. The coil is pre-wound and fixed on the outer circumference of the positioning fixture 200. The first drive mechanism 51 receives the indexing command from the control device 1 and drives the transfer disk 52 to perform intermittent indexing rotation. This drives the positioning fixture 200 carried by the limiting member 53 to pass through the loading station, angle adjustment station, welding station, and unloading station in sequence, completing the entire process of coil loading, coil end angle calibration, conductive terminal wire welding, and finished product unloading.

[0025] Specifically, the feeding device 2 is installed on one side of the turntable 52 at the corresponding feeding station, and is used to pick up the positioning fixture 200 with pre-installed coil from the conveyor line and accurately place it on the empty limiting member 53; the angle adjustment device 3 is installed above the turntable 52 at the corresponding calibration station, and is composed of the second drive mechanism 31 and the first position sensor 32. The first position sensor 32 collects the position coordinate signal of the coil end on the positioning fixture 200 in real time and transmits it back to the control device 1. The control device 1 outputs a drive signal to the second drive mechanism 31 according to the offset. The second drive mechanism 31 moves towards the turntable 52 and forms a transmission cooperation with the positioning fixture 200, driving the positioning fixture 200 to rotate autonomously until the coil end rotates to the system preset standard welding position.

[0026] The welding device 4 is arranged next to the angle adjustment device 3 and is divided into two main modules: the wire feeding mechanism 41 and the welding mechanism 42. The wire feeding mechanism 41 continuously feeds the whole roll of conductive terminal wire to the welding station and completes fixed-length cutting and positioning support. The welding mechanism 42 is equipped with a solder wire feeding assembly 431, a multi-axis moving module and a welding gun assembly 47, which heat-melt welds the conductive terminal wire to the calibrated coil end to fix it.

[0027] Compared to existing semi-automatic welding equipment that requires manual rotation of the fixture to align the coil wire ends, this solution relies on the automatic indexing and transfer of the 52-inch rotary table and the closed-loop angle calibration of the sensor, eliminating the need for manual intervention in coil alignment throughout the entire process and completely eliminating positioning deviations caused by manual operation.

[0028] Specifically, in this embodiment, the outer cylindrical surface of the limiting member 53 is integrally formed with an anti-rotation key that extends axially, and the anti-rotation key is provided through the height direction of the limiting member 53; the positioning fixture 200 has a through-hole in the center, and the inner wall of the inner hole has a keyway that perfectly matches the shape of the anti-rotation key, and the axial length of the keyway is less than the axial length of the anti-rotation key.

[0029] The loading robot 22 grasps the positioning fixture 200, aligning the keyway inside the positioning fixture 200 with the anti-rotation key of the limiting member 53 to complete the sliding engagement. The anti-rotation key fits into the keyway to achieve complete circumferential locking. When the limiting member 53 rotates, it can synchronously drive the positioning fixture 200 to rotate together. At the same time, because the anti-rotation key has a longer axial length, the positioning fixture 200 can slide slightly up and down along the column of the limiting member 53, without getting stuck and unable to be disassembled.

[0030] Preferably, an elastic anti-detachment component is installed in the annular groove on the upper end face of the limiting member 53. The elastic anti-detachment component is made of annular spring steel sheet. The sheet retracts inward under normal conditions. When the positioning fixture 200 is fully inserted into the limiting member 53, the inner annular surface of the sheet is in close contact with the upper outer wall of the positioning fixture 200, and axial pressing anti-detachment force is continuously applied downward. The elastic force parameter of the elastic anti-detachment component is pre-adjusted, and the pressing force value is less than the axial pulling force when the gripper of the unloading robot 62 grasps the positioning fixture 200.

[0031] When the high-speed indexing rotation of the turntable 52 generates centrifugal force, the elastic anti-detachment component continuously presses against the positioning fixture 200, preventing the positioning fixture 200 from sliding upward along the axial direction of the limiting member 53. When the unloading robot 62 moves to the unloading station, the gripper holds the outer wall of the positioning fixture 200 and pulls it upward. The pulling force overcomes the pressing force of the spring sheet, and the positioning fixture 200 can be directly and vertically removed from the limiting member 53. After removal, the spring sheet automatically springs back to its original position, waiting for the next set of positioning fixtures 200 to be assembled.

[0032] Specifically, in this embodiment, the angle adjustment device 3 and the welding device 4 are each equipped with two independent working units. All workstations are arranged in a fixed order along the circumferential rotation direction of the turntable 52, namely, the feeding device 2, the first set of angle adjustment devices 3, the first set of welding devices 4, the second set of angle adjustment devices 3, the second set of welding devices 4, and the unloading device 6; multiple sets of limiting parts 53 are evenly arranged on the turntable 52.

[0033] The total number of limiting components 53 is greater than the sum of the number of workstations of feeding device 2, two sets of angle adjustment devices 3, two sets of welding devices 4, and unloading device 6, ensuring that there are idle limiting components 53 to receive new positioning fixtures 200 when any workstation is working.

[0034] In this embodiment, there are 8 limiting members 53. The turntable in this embodiment is evenly divided into 8 limiting members, and there are a total of 6 fixed stations in the whole machine, namely 1 loading, two sets of angle correction, two sets of welding, and 1 unloading. The total number of stations is 6, which is less than the number of limiting members 8. The single indexing rotation angle of the turntable 52 is 45°.

[0035] Two sets of angle adjustment devices 3 and two sets of welding devices 4 correspond to the two independent lead wire ends of the voice coil, respectively. The first set of angle adjustment devices 3 and the first set of welding devices 4 are responsible for correcting and welding the first lead wire, and the second set of angle adjustment devices 3 and the second set of welding devices 4 complete the correction and welding of the second lead wire, realizing the step-by-step precise processing of the double wire ends.

[0036] The timing correspondence is as follows: After each 45° indexing pause, the corresponding process is executed synchronously at 6 stations, and the remaining 2 limiters are idle buffer positions; the welding process is the longest cycle time of the whole machine, and the loading, unloading and angle correction take less time. The extra 2 limiters are used to buffer materials to offset the time difference between each process. The loading and correction mechanisms do not need to wait for the welding station to become available before they can continue to load and adjust the line.

[0037] The indexing timing logic is as follows: every 45° rotation of the turntable, a set of limit components is switched to the next station. Two sets of calibration and two sets of welding are carried out synchronously and in parallel. When the finished product is transferred to the unloading station, the idle limit components take over the time difference between the previous and subsequent processes, and there will be no material blockage. At the same time, the 8 equal-division small angle indexing reduces the impact of the turntable rotation and makes the fixture positioning more stable.

[0038] When the equipment is running, the turntable 52 rotates once and simultaneously delivers the coil fixture to be calibrated to two sets of angle adjustment stations. The two sets of angle adjustment devices 3 independently and synchronously complete the wire end angle calibration. After calibration, they are transferred to the corresponding welding stations. The two sets of welding mechanisms 42 perform welding operations synchronously. The two sets of stations work in parallel without interfering with each other.

[0039] Specifically, in this embodiment, the limiting member 53 is a cylindrical column, and the bottom end of the column is rotatably assembled in the pre-reserved installation hole on the edge of the turntable 52 through the bearing seat. The column can rotate freely around its own central axis. The outer circular side wall of the positioning fixture 200 is provided with an annular positioning groove, and the enameled coil is evenly wound on the outer peripheral wall of the positioning groove of the positioning fixture 200.

[0040] The loading robot 22 grasps the positioning fixture 200 and moves it up and down and back and forth. The inner wall of the bottom of the positioning groove is fitted with the outer circle of the limiting member 53 column to complete the sleeve assembly. When the second drive mechanism 31 moves to the tail of the positioning fixture 200 to form a transmission engagement, the second motor 312 outputs torque to drive the limiting member 53 column to rotate synchronously. The column drives the positioning fixture 200 sleeved on the outside to rotate together. The coil wound on the positioning groove rotates synchronously in the circumferential direction until the end of the coil rotates to the preset welding coordinate position. After the angle is calibrated, the second drive mechanism 31 disengages, and the limiting member 53 column is transferred to the next station by the turntable 52.

[0041] Compared to fixed, non-rotatable limit posts, fixtures that rely solely on external mechanisms for forced twisting are prone to fixture wear and coil breakage. In this solution, the limit component 53 has a built-in rotary bearing, resulting in less resistance during rotation and protecting the fine enameled coil from breakage.

[0042] Specifically, in this embodiment, the feeding device 2 consists of two parts: a first conveyor line 21 and a feeding robot 22. The first conveyor line 21 is horizontally fixed to the side of the machine base 100 and is used to continuously convey the pre-loaded coil positioning fixture 200 material. The feeding robot 22 is installed on one side of the discharge end of the first conveyor line 21. The robot base is rigidly fixed to the table surface of the machine base 100. A first transverse module 221 is horizontally mounted above the base. A first lifting module 222 is vertically mounted at the slide output end of the first transverse module 221. A first rotary drive module 223 is fixed at the lower end of the lifting slide of the first lifting module 222. A gripper cylinder 224 is mounted at the bottom of the output shaft of the first rotary drive module 223. A set of execution fingers 225 are respectively installed on the left and right output ends of the gripper cylinder 224.

[0043] The loading process is as follows: The first conveyor line 21 transports the positioning fixture 200 to the picking point. The first transverse module 221 drives the overall robot arm to move laterally above the material. The first lifting module 222 lowers so that the execution fingers 225 are aligned with the outer wall of the positioning fixture 200. The gripper cylinder 224 drives the execution fingers 225 on both sides to clamp the positioning fixture 200 inward. The first lifting module 222 lifts the material. The first transverse module 221 moves laterally to the loading station above the turntable 52. The first rotary drive module 223 can finely adjust the initial angle of the fixture as needed. Then the first lifting module 222 lowers, and the gripper cylinder 224 releases and opens the execution fingers 225, placing the positioning fixture 200 stably on the empty limit member 53, completing a single loading cycle.

[0044] Preferably, in this embodiment, the unloading device 6 includes a second conveyor line 61 and an unloading robot 62. The overall structure and conveying drive module specifications of the second conveyor line 61 are completely identical to those of the first conveyor line 21. It is horizontally installed on the side of the unloading station of the machine 100 to receive the welded finished product positioning fixture 200. The overall module structure, dimensional parameters, and drive logic of the unloading robot 62 are completely identical to those of the loading robot 22. It is installed on the loading end side of the second conveyor line 61. After the turntable 52 transfers the welded positioning fixture 200 to the unloading station, the unloading robot 62 repeats the lateral movement, lifting, and gripping actions of the loading robot 22. It grips the finished product positioning fixture 200 and pulls it vertically from the limiting member 53. It moves to above the second conveyor line 61 and releases the gripper, allowing the finished product positioning fixture 200 to fall onto the second conveyor line 61 to complete the unloading conveying.

[0045] Specifically, in this embodiment, a circular fixed plate 7 is erected above the table surface of the machine 100. The fixed plate 7 is fixed to the machine 100 by multiple vertical support columns. The fixed plate 7 is horizontally arranged directly above the turntable 52. The overall outer diameter of the fixed plate 7 is smaller than the outer diameter of the turntable 52 to avoid obstructing the indexing rotation path of the turntable 52.

[0046] Multiple sets of first position sensors 32 are evenly assembled on the outer edge of the fixed disk 7, with the sensor detection probes pointing vertically downward toward the installation area of ​​the limiting member 53 on the lower rotating disk 52.

[0047] When the positioning fixture 200 carrying the coil moves to the angle adjustment station, the positioning fixture 200 is exactly below the probe of the corresponding first position sensor 32. The sensor collects the presence or absence of the coil end and the offset distance signal in real time, and transmits it to the control device 1 in real time, providing accurate data support for the angle calibration of the second drive mechanism 31.

[0048] Specifically, in this embodiment, the second drive mechanism 31 is composed of a second transverse module 311, a second motor 312, and an execution component 313 assembled from top to bottom. The second transverse module 311 is horizontally fixed above the corresponding angle adjustment station of the machine tool 100. The module slide moves horizontally back and forth in the direction of the turntable 52. The lower end of the slide is vertically fixed to the second motor 312, and the output shaft of the second motor 312 is connected to the execution component 313 downwards.

[0049] When the angle calibration is started, the control device 1 outputs a signal to drive the second transverse module 311 to move horizontally towards the turntable 52, which drives the second motor 312 and the bottom execution component 313 to move downward, so that the execution component 313 and the tail of the positioning fixture 200 on the limit member 53 form a transmission engagement; Subsequently, the second motor 312 outputs rotational torque, which drives the positioning fixture 200 and the limit post to rotate synchronously through the actuator 313. The rotation angle is dynamically adjusted in real time in accordance with the offset data fed back by the first position sensor 32 until the coil wire end reaches the preset welding point. After calibration, the second transverse module 311 reverses and retracts, the actuator 313 and the positioning fixture 200 are completely separated, and the turntable 52 can then drive the fixture to the next station.

[0050] Preferably, in this embodiment, the actuating component 313 at the output end of the second motor 312 is a hollow transmission sleeve, with an axially through transmission keyway integrally formed on the inner wall of the transmission sleeve; a transmission key extending outward is integrally formed at the center of the tail end face of the positioning fixture 200, and the outer dimensions of the transmission key perfectly match the transmission keyway. When the second transverse module 311 moves forward, the transmission sleeve is inserted downward into the tail of the positioning fixture 200, and the transmission key is completely embedded inside the transmission keyway, with the groove wall and the key side wall tightly fitted. When the second motor 312 rotates, it transmits torque through the contact surface between the keyway and the transmission key, stably driving the positioning fixture 200 to rotate and adjust its angle.

[0051] The inner diameter of the transmission sleeve is larger than the outer diameter of the tail of the positioning fixture 200, with a small gap between them. Torque is transmitted solely through the key structure, and there is no axial compression friction. When the second transverse module 311 retracts backward, the transmission sleeve disengages upward from the tail of the positioning fixture 200. There is no axial pulling force during the entire separation process. The positioning fixture 200 remains stably on the limiting member 53 under the action of the elastic anti-detachment component and will not be displaced with the sleeve. After being transferred to the unloading station, the unloading robot 62 pulls off the fixture smoothly by overcoming the pre-tightening force of the elastic anti-detachment component.

[0052] Specifically, in this embodiment, the welding mechanism 42 gantry 43 spans above the welding station of the turntable 52. The solder wire feeding assembly 431 is fixed on the crossbeam of the gantry 43, and the outlet of the solder wire feeding assembly 431 is aligned with the solder outlet 48 below. A third transverse module 44 is horizontally assembled below the crossbeam of the gantry 43. A second lifting module 45 is vertically fixed at the bottom of the slide of the third transverse module 44. A third lifting module 46 is assembled at the lower end of the lifting slide of the second lifting module 45. A welding gun assembly 47 is fixed at the output end of the third lifting module 46, and a solder outlet 48 is installed at the front end of the welding gun.

[0053] The welding process is as follows: The wire feeding mechanism 41 delivers the conductive terminal wire to the welding point and is supported and positioned by the support frame 416. The third transverse module 44 moves laterally to adjust the left and right position of the welding gun. The second lifting module 45 completes a large-range coarse height adjustment. The third lifting module 46 performs a high-precision micro-pressing action, driving the welding gun assembly 47 to press down, so that the conductive terminal wire is tightly attached to the end of the coil. The solder wire feeding assembly 431 continuously feeds molten solder wire to the solder outlet 48. The welding gun assembly 47 heats up to melt the solder wire, completing the welding and fixing of the conductive terminal wire and the end of the coil.

[0054] Preferably, in this embodiment, a solder dross pipe 49 is fixed on the side column of the gantry frame 43. The rear end of the solder dross pipe 49 is connected to the whole machine vacuum suction system. The front end of the solder dross pipe 49 is dross suction port facing the welding head of the welding gun assembly 47 and the solder outlet of the solder nozzle 48. The dross suction port and the welding point are kept at a fixed small distance.

[0055] During the welding operation, the vacuum suction system continuously generates negative pressure. The solder dross and solder mist generated by the high temperature of welding are all sucked into the solder dross tube 49 by the negative pressure airflow and collected in a unified manner, so as to prevent the solder dross from falling and adhering to the coil, positioning fixture 200 or machine table 100.

[0056] Specifically, in this embodiment, the power output path of the first drive mechanism 51 is sequentially the first motor 511, the reducer 512, and the main shaft of the turntable 52. The output shaft of the first motor 511 is rigidly connected to the input shaft of the reducer 512. The output shaft of the reducer 512 is connected to the central main shaft of the turntable 52. The reducer 512 reduces the motor speed and increases the output torque, thereby driving the turntable 52 to rotate smoothly in increments.

[0057] Specifically, the zero-point detection unit 513 consists of a fan-shaped recognition disk 5131 and a second position sensor 5133. The fan-shaped recognition disk 5131 is fixedly mounted on the outer wall of the output shaft of the reducer 512. A notch 5132 is opened on the outer circumference of the fan-shaped recognition disk 5131. The second position sensor 5133 is fixed on the side bracket of the reducer 512, and the sensor head is facing the outer edge of the fan-shaped recognition disk 5131.

[0058] When the equipment is started, the control device 1 automatically triggers the zero-return program. The first motor 511 drives the fan-shaped recognition disk 5131 to rotate slowly. When the notch 5132 of the fan-shaped recognition disk 5131 rotates to the sensing area of ​​the second position sensor 5133, the sensor triggers the position signal and sends it back to the control device 1. The control device 1 records the current position as the rotation reference zero point of the turntable 52. In the subsequent production process, the control device 1 uses the zero point position as a reference to accurately output the indexing rotation angle command and control the fixed station spacing of the turntable 52 each time it rotates.

[0059] In this embodiment, the wire feeding mechanism 41 is vertically fixed to the side of the welding station of the machine 100. The upper part of the frame 411 is rotatably equipped with the unwinding reel 412, and the entire roll of conductive terminal wire is freely unwound on the unwinding reel 412.

[0060] The wire output end of the unwinding reel 412 is sequentially connected to the wire pulling assembly 413 and the wire cutting assembly 414. The wire cutting assembly 414 consists of a fourth transverse moving module 4141, a fifth transverse moving module 4142, and a wire cutting blade 4143. The fourth transverse moving module 4141 is arranged horizontally, and the fifth transverse moving module 4142 is installed parallel to the slide of the fourth transverse moving module 4141. The wire cutting blade 4143 is fixed at the output end of the fifth transverse moving module 4142. The top surface of the slide table of the fourth transverse module 4141 is also vertically equipped with a bearing cylinder 415, and the bearing cylinder 415 has a bearing frame 416 fixed at its upward output end. When the equipment is running, the unwinding reel 412 continuously releases the conductive terminal wire, the wire pulling assembly 413 straightens the wire and guides it to the area above the welding station, and the bearing cylinder 415 drives the bearing frame 416 to lift upward, supporting the positioning fixture 200 on the lower limiting member 53, thereby improving the stability of the fixture during the welding process. After welding is completed, the fourth transverse module 4141 and the fifth transverse module 4142 move together to drive the wire cutter 4143 to move horizontally to cut the conductive terminal wire, completing a single wire feeding and cutting cycle.

[0061] Preferably, in this embodiment, the wire pulling assembly 413 is mounted above the slide of the fourth transverse module 4141. The wire pulling assembly 413 includes a sixth transverse module 4131, a tube clamping cylinder 4132, a guide tube 4133, a wire clamping cylinder 4134, a tensioning roller 4135, and a wire guide plate 4136.

[0062] The fourth transverse module 4141 and the sixth transverse module 4131 move in mutually perpendicular directions. The slide table of the sixth transverse module 4131 is fixed with a pipe clamping cylinder 4132. The front end of the pipe clamping cylinder 4132 clamps the guide tube 4133. The wire clamping cylinder 4134 is installed on the wire inlet side of the guide tube 4133. The tension roller 4135 and the wire guide plate 4136 are arranged sequentially along the wire routing path. The wire guide plate 4136 has a standard wire guide hole, and the diameter of the wire guide hole is smaller than the outer diameter of the conductive terminal wire.

[0063] The conductive terminal wire routing path is as follows: the wire is released from the unwinding reel 412 and first passes around the tension roller 4135 to buffer the wire tension. Then it passes through the wire guide plate 4136 through the wire hole to filter wire wrinkles and limit the vertical displacement of the wire. After that, it enters the wire clamping cylinder 4134 for clamping and positioning. After passing through the guide tube 4133, it is precisely guided to the welding point of the welding station. The sixth transverse module 4131 moves in conjunction with the fourth transverse module 4141 to precisely adjust the front-to-back and left-to-right coordinates of the wire exit, ensuring that the terminal wire is accurately attached to the end of the coil.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A voice coil wire bonding machine, characterized in that: The system includes a machine base (100), a control device (1), a feeding device (2) electrically connected to the control device (1) on the machine base (100), an angle adjustment device (3), a welding device (4), a transfer device (5), and a unloading device (6). The transfer device (5) includes a first drive mechanism (51), a transfer disk (52) at the output end of the first drive mechanism (51), and a limiting member (53) on the transfer disk (52). The limiting member (53) is used to support the positioning fixture (200), and the positioning fixture (200) is used to mount the coil. The first drive mechanism (51) is used to drive the transfer disk (52) to rotate so that the positioning fixture (200) can be indexed and transferred between the angle adjustment device (3), the welding device (4), and the unloading device (6) to realize the feeding, welding, and unloading actions. The feeding device (2) is used to transport... A positioning fixture (200) with a coil wound on it is moved to a limiting member (53); the angle adjustment device (3) includes a second drive mechanism (31) and a first position sensor (32). The first position sensor (32) is used to detect the end position signal of the coil wound on the positioning fixture (200) and upload the position signal to the control device (1). The control device (1) regulates the second drive mechanism (31) to approach and drive the positioning fixture (200) limited by the limiting member (53) to rotate so that the end of the coil is in a preset position; the welding device (4) includes a wire feeding mechanism (41) and a welding mechanism (42). The wire feeding mechanism (41) is used to feed a conductive terminal wire to the welding mechanism (42). The welding mechanism (42) is used to weld the conductive terminal wire to the end of the coil in the preset position.

2. The voice coil bonding machine according to claim 1, characterized in that: Two sets of angle adjustment devices (3) and welding devices (4) are provided. Along the rotation direction of the turntable (52), the feeding device (2), the first set of angle adjustment devices (3), the first set of welding devices (4), the second set of angle adjustment devices (3), the second set of welding devices (4), and the unloading device (6) are arranged in sequence. Multiple limiting members (53) are provided. Multiple limiting members (53) are arranged around the rotation axis of the turntable (52). The number of limiting members (53) is greater than or equal to the total number of feeding devices (2), angle adjustment devices (3), welding devices (4), and unloading devices (6).

3. The voice coil wire bonding machine according to claim 1, characterized in that: The limiting member (53) is a column that is rotatably set on the edge of the turntable (52); the positioning fixture (200) is provided with a positioning groove, and the coil is used to be wound around the outer periphery of the positioning fixture (200). The positioning groove of the positioning fixture (200) is sleeved on the column under the drive of the feeding device (2); the second driving mechanism (31) is used to drive the positioning fixture (200) together with the column to rotate, so as to rotate the end of the coil to a preset position.

4. The voice coil bonding machine according to claim 1, characterized in that: The loading device (2) includes a first conveyor line (21) and a loading robot (22) disposed on one side of the first conveyor line (21). The loading robot (22) includes a first transverse module (221), a first lifting module (222) disposed at the output end of the first transverse module (221), a first rotary drive module (223) disposed at the output end of the first lifting module (222), and a gripper cylinder (224) disposed at the output end of the first rotary drive module (223). The output end of the gripper cylinder (224) is provided with an execution finger (225) for picking up and placing the positioning fixture (200).

5. The voice coil bonding machine according to claim 4, characterized in that: The unloading device (6) includes a second conveyor line (61) and an unloading robot (62) disposed on one side of the second conveyor line (61); the second conveyor line (61) has the same structure as the first conveyor line (21); the unloading robot (62) has the same structure as the loading robot (22).

6. The voice coil bonding machine according to claim 1, characterized in that: The machine tool (100) is also provided with a fixed plate (7), which is located above the turntable (52). The diameter of the fixed plate (7) is smaller than that of the turntable (52). The first position sensor (32) is set on the edge of the fixed plate (7). The detection end of the first position sensor (32) is set towards the limiting member (53) to detect the position of the coil end on the positioning fixture (200) carried by the limiting member (53).

7. The voice coil bonding machine according to claim 1, characterized in that: The second drive mechanism (31) includes a second transverse module (311), a second motor (312) disposed at the output end of the second transverse module (311), and an execution component (313) disposed at the output end of the second motor (312). The second transverse module (311) is used to drive the second motor (312) to approach the positioning fixture (200) on the turntable (52), so that the execution component (313) and the positioning fixture (200) are in transmission cooperation. The second motor (312) is used to drive the execution component (313) to drive the positioning fixture (200) to rotate, so that the end of the coil on the positioning fixture (200) rotates to a preset position.

8. The voice coil wire bonding machine according to claim 1, characterized in that: The welding mechanism (42) includes a gantry (43), a solder wire feeding assembly (431) mounted on the gantry (43), a third transverse module (44), a second lifting module (45) mounted at the output end of the third transverse module (44), a third lifting module (46) mounted at the output end of the second lifting module (45), a soldering gun assembly (47) mounted at the output end of the third lifting module (46), and a solder nozzle (48); the solder wire feeding assembly (431) is used to feed solder wire to the solder nozzle (48); The third lifting module (46) drives the welding gun assembly (47) to press down under the driving action of the third horizontal moving module (44) and the second lifting module (45), so that the conductive terminal wire and the end welding position of the coil are in contact. The welding gun assembly (47) is used to weld and fix the conductive terminal wire and the end of the coil.

9. The voice coil wire bonding machine according to claim 1, characterized in that: The first drive mechanism (51) includes a first motor (511), a reducer (512) disposed at the output end of the first motor (511), and a zero-point detection unit (513) for determining the rotation reference position of the turntable (52). The zero-point detection unit (513) includes a fan-shaped recognition disk (5131) and a second position sensor (5133). The fan-shaped recognition disk (5131) is disposed on the output shaft of the first motor (511) or the reducer (512). The outer periphery of the fan-shaped recognition disk (5131) is provided with a notch (5132). The second position sensor (5133) is correspondingly engaged with the fan-shaped recognition disk (5131) and is used to detect when the notch (5132) of the fan-shaped recognition disk (5131) rotates to a preset position and triggers a positioning signal. The control device (1) receives the positioning signal and controls the first motor (511) to perform the start-up and zero-return action and the indexing rotation action of the turntable (52).

10. The voice coil wire bonding machine according to claim 1, characterized in that: The wire feeding mechanism (41) includes a stand (411), a reel (412) rotatably mounted on the stand (411), a wire pulling assembly (413) cooperating with the reel (412), and a wire cutting assembly (414) cooperating with the wire pulling assembly (413). The wire cutting assembly (414) includes a fourth transverse module (4141), a fifth transverse module (4142) mounted at the output end of the fourth transverse module (4141), and a wire cutting blade (4143) mounted at the output end of the fifth transverse module (4142). The moving directions of the fourth transverse module (4141) and the fifth transverse module (4142) are parallel. The unwinding reel (412) is used to unwind the conductive terminal wire roll to the wire pulling assembly (413), and the wire pulling assembly (413) is used to straighten the conductive terminal wire unwound by the unwinding reel (412); the conductive terminal wire unwound by the unwinding reel (412) is guided by the wire pulling assembly (413) to the preset welding position of the welding device (4); the output end of the fourth transverse module (4141) is also provided with a bearing cylinder (415), and the output end of the bearing cylinder (415) is provided with a bearing frame (416). The bearing cylinder (415) is used to drive the bearing frame (416) to rise and fall to support the positioning fixture (200), or to detach from the positioning fixture (200) to cooperate with the welding mechanism (42) to perform welding operations.

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