Platinum alloy wire welding device for artificial cochlea

Abstract

The invention discloses a platinum alloy wire welding device for an artificial cochlea, and particularly relates to the technical field of alloy wire welding.The platinum alloy wire welding device is provided with two elastic pressing heads, a first chuck and a second chuck, the first chuck and the second chuck act in a time-sharing mode, and the elastic pressing head at the end away from an artificial cochlea electrode is pressed downwards in the vertical direction; flexible clamping is formed on the middle portion of the platinum alloy wire under the condition that rigid crushing is not generated, and a second chuck descends in the vertical direction and clamps one end of the platinum alloy wire; then, the end clamped by the second chuck moves towards the first feeding channel, the platinum alloy wire at the end is in butt joint with the artificial cochlea electrode in the arc-shaped groove in a tensioned state, and the end of the platinum alloy wire is attached to an electrode contact under the concentric matching condition; a time-sharing clamping and tensioning alignment mode is adopted, so that the filament is always in a tensioned straight line state in the two-end welding process, the phenomena of bending, loosening or virtual connection of the filament are fundamentally avoided, and the welding spot forming quality and the conductive stability are improved.

Description

Technical Field

[0001] This invention relates to the field of alloy wire welding technology, specifically to a platinum alloy wire welding device for cochlear implants. Background Technology

[0002] Cochlear implants are implantable hearing reconstruction devices, and their core structure typically consists of an electrode array, a lead connection system, and an implantable electronic shell. The electrode leads commonly use platinum or platinum alloy filaments as conductive and biocompatible materials to reliably transmit the electrical stimulation signals output by the processor to the spiral nerve region of the inner ear. The platinum alloy filaments usually function as signal transmission leads. Platinum alloy filaments possess excellent biocompatibility, corrosion resistance, and long-term stability. Current cochlear implant electrode lead connections mostly employ micro-spot welding, thermocompression welding, or laser welding processes to electrically connect the platinum alloy filaments to solder pads, electrode needles, or conductive terminals.

[0003] In existing cochlear implant platinum alloy wire welding processes, the lack of posture stability constraints on the wire within the welding area and effective tension control at the wire end often results in the wire being in a "semi-free" state during transport, alignment, and welding. This makes it prone to slight swaying, warping, or deviation from the centerline, making it difficult to maintain the expected straight and coaxial posture. This weakens the stability of the electrical connection between the platinum alloy wire and the cochlear implant electrodes and pads, leading to risks such as poor contact, channel failure, and signal distortion during long-term implantation and use of the cochlear implant. Summary of the Invention

[0004] The purpose of this invention is to provide a platinum alloy wire welding device for cochlear implants to solve the problems mentioned in the background art.

[0005] The main technical problem solved by this invention is: Because the platinum alloy wire may bend, loosen or shift during the welding stage, problems such as weld point alignment error, incomplete welding, stress concentration and fatigue cracks may occur, which will affect the conductivity reliability and product consistency.

[0006] This invention can be achieved through the following technical solutions: A platinum alloy wire welding device for cochlear implants includes a welding chamber, a conveyor belt installed in the channel in the middle of the welding chamber, and a plurality of bearing supports provided on the surface of the conveyor belt, each bearing support being provided with a V-shaped groove for the platinum alloy wire to enter. The welding chamber is provided with a second feeding channel for transferring welding pads on one side, and a first feeding channel for transferring cochlear implant electrodes on the other side of the welding chamber. The pads are in a vertical position during transfer; Two elastic clamping heads are installed at the top of the inner cavity of the welding chamber and above the platinum alloy wire. The inner wall of each elastic clamping head is in contact with the upper outer surface of the platinum alloy wire, and the outer wall of each elastic clamping head is in contact with the surface of the V-groove. One side of the elastic clamping head is slidably provided with a clamping head 1 that moves vertically and clamps one end of the platinum alloy wire, and the other side of the elastic clamping head is slidably provided with a clamping head 2 that moves vertically and clamps one end of the platinum alloy wire. The bearing support is provided with an arc-shaped groove for the entry of the cochlear implant electrode at one end near the feeding channel. The center of the cochlear implant electrode in the arc-shaped groove is consistent with the center of the aluminum alloy wire in the V-shaped groove. The bottom of the inner cavity of the second feeding channel is provided with a linear guide rail, on which a transfer frame is slidably mounted. A rotating support is mounted in the middle of the transfer frame via a rotary motor. The welding chamber has a sliding clamping device that positions the welding pad and the end of the platinum alloy wire at the top of the inner cavity near the chuck.

[0007] A further technical improvement of the present invention is that: the sliding clamping member includes a second linear guide rail installed in the inner cavity of the welding chamber, a vertical electric push rod is installed on the slider of the second linear guide rail, and an electric gripper for clamping the outer surface of the welding pad is installed on the pushing end of the vertical electric push rod; The upper end face of the support bracket is provided with a positioning groove for the entry of the solder pad on the side adjacent to the sliding clamp.

[0008] A further technical improvement of the present invention is that: a pusher seat driven by a stroke cylinder is provided on the inner side of the second feeding channel near the inlet, a push plate driven by a rotary motor is installed on the pusher seat, and an adsorption plate is embedded in the middle of one side of the push plate; The upper part of the rotating support is open, and the inner side of the rotating support is designed with an L-shaped structure. The middle part of the rotating support is provided with a slot for the push plate to enter.

[0009] A further technical improvement of the present invention is that: a transfer cylinder is slidably provided on the side of the inner cavity of the welding chamber away from the sliding clamping member, a bracket is installed on the lower surface of the transfer cylinder, and the end of the transfer cylinder is adjacent to the arc groove; a support plate is installed on the side of the inner wall of the welding chamber close to the conveyor belt; and a horizontal electric push rod that pushes the bracket to move is installed on the inner wall of the welding chamber.

[0010] A further technical improvement of the present invention is that: a connecting plate is fixed at the end of the first feeding channel, and a rotating frame driven by a servo motor on the connecting plate is installed inside the first feeding channel. The outer surface of the rotating frame is provided with a plurality of insertion slots, and the upper surface of the first feeding channel is provided with a notch communicating with any one of the insertion slots. The electrode, which enters the insertion groove through the notch, rotates to reach the lowest position, and the corresponding insertion groove is connected to the transfer cylinder; Inside the first feeding channel, on one side adjacent to the connecting plate, there is a pusher plate driven by a segmented pushing cylinder, and the pusher plate is connected to the transfer cylinder.

[0011] A further technical improvement of the present invention is that: the upper surface of the bearing support is provided with a fitting groove inside the V-shaped groove, and there are two fitting grooves, which are respectively located directly below the sliding distance of the first clamp and the second clamp; Both the first chuck and the second chuck slide on their respective slide rails. When sliding, the first chuck and the second chuck do not work downwards at the same time. When chuck one or chuck two is downward, it clamps the end of the platinum alloy wire and then slides in the direction of the corresponding end.

[0012] A further technical improvement of the present invention is that: a pulsed laser welding head is provided at the top of the inner cavity of the welding chamber and at both ends of the platinum alloy wire, and an industrial camera for identifying the contact point of the end of the platinum alloy wire and the contact pad is embedded on the lower surface of one of the pulsed laser welding heads.

[0013] A further technical improvement of the present invention is that both the inlet and outlet of the welding chamber are equipped with lifting and sealing doors.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting two elastic clamping heads and time-divided clamping heads one and two, the elastic clamping head at the end furthest from the cochlear implant electrode presses down vertically, forming a flexible clamp on the middle of the platinum alloy wire without causing rigid crushing. Clamping head two descends vertically and clamps one end of the platinum alloy wire. Subsequently, the end clamped by clamping head two moves towards the feed channel, so that the platinum alloy wire at that end, under tension, aligns with the cochlear implant electrode in the arc-shaped groove. Since the center of the cochlear implant electrode in the arc-shaped groove is coaxial with the center of the platinum alloy wire in the V-shaped groove, The end of the platinum alloy wire is in concentric fit with the electrode contact, avoiding the indentation and stress concentration problems caused by rigid clamping. The elastic clamping head located on the side near the cochlear implant electrode presses down vertically to provide secondary posture stabilization constraint on the middle section of the wire. Then, the clamp holds the other end of the wire and moves it in the direction of the feed channel. The two ends are welded in steps, and time-sharing clamping and tension alignment are adopted to keep the wire in a taut and straight state during the welding process at both ends. This fundamentally avoids the wire bending, loosening or loose connection, and improves the weld formation quality and conductivity stability. 2. By setting up a pushing unit, when the solder pad reaches the end of the second feeding channel, the middle of the rotating support rotates. At this time, one side of the solder pad contact point faces the end of the platinum alloy wire. The push plate is driven by the push base and enters the interior of the rotating support from the slot. The adsorption plate adsorbs and fixes the solder pad. The push plate drives the solder pad to rotate in an orientation through rotation, so that the solder pad contact point gradually turns and faces the end of the platinum alloy wire. When the solder pad rotates to the target angle and is pushed to the docking position, the solder pad contact point and the end of the platinum alloy wire are aligned and kept in contact, completing the pre-welding alignment. 3. By setting a sliding transfer cylinder, initially, the transfer cylinder is connected to the feeding channel. The cochlear implant electrode enters the transfer cylinder. Under the drive of the horizontal electric push rod, the transfer cylinder moves as a whole towards the arc-shaped groove, so that the cochlear implant electrode increases the alignment area without leaving the transfer cylinder. The end of the transfer cylinder and the entrance of the arc-shaped groove form a guiding transition structure. Under the guidance of the pushing inertia and the groove structure, the cochlear implant electrode smoothly enters the arc-shaped groove and achieves coaxial docking with the end of the platinum alloy wire. 4. The insertion slot rotates to its lowest position via the rotating frame. This insertion slot is connected to the inlet position of the transfer cylinder, thus forming a channel for the electrode to be transferred from the rotating frame to the transfer cylinder. The segmented pushing cylinder pushes the pusher plate forward along the feeding axis, pushing the electrode in the insertion slot out of the slot and into the transfer cylinder, so that the electrode can smoothly enter the transfer cylinder without rolling or jumping, and then enter the subsequent arc-shaped slot for guidance and alignment. Attached Figure Description

[0015] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the welding chamber of the present invention; Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle; Figure 4 For the present invention Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the installation structure of the transfer cylinder and bracket of the present invention; Figure 6 This is a schematic diagram of the installation structure of the rotating frame and pusher plate of the present invention; Figure 7 This is a schematic diagram of the three-dimensional installation structure of the fitting groove of the present invention; Figure 8 This is a schematic diagram of the installation structure of the elastic clamping head of the present invention.

[0017] In the diagram: 1. Welding chamber; 2. Feeding channel one; 3. Connecting plate; 4. Insertion groove; 5. Conveyor belt; 6. Bearing support; 7. Rotating frame; 8. Feeding channel two; 9. Push plate; 10. Adsorption plate; 11. Transfer frame; 12. Rotating support; 13. Linear guide rail one; 14. Vertical electric push rod; 15. Electric gripper; 16. Positioning groove; 17. Pulsed laser welding head; 18. Clamp one; 19. Elastic clamping head; 20. Clamp two; 21. Transfer cylinder; 22. Bracket; 23. Support plate; 25. Push plate; 26. Push seat; 27. Adhesion groove; 28. Linear guide rail two. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-8 As shown, the present invention provides a platinum alloy wire welding device for cochlear implants, including a welding chamber 1, a conveyor belt 5 installed in the channel in the middle of the welding chamber 1, and a plurality of bearing supports 6 provided on the surface of the conveyor belt 5, each bearing support 6 being provided with a V-shaped groove for the platinum alloy wire to enter. The welding chamber 1 is provided with a feeding channel 2 8 for transferring the welding pad on one side, and a feeding channel 1 2 for transferring the cochlear implant electrode on the other side. The pads are in a vertical position during transfer; Two elastic clamping heads 19 are provided at the top of the inner cavity of the welding chamber 1 and above the platinum alloy wire. The inner wall of each elastic clamping head 19 is in contact with the upper outer surface of the platinum alloy wire, and the outer wall of each elastic clamping head 19 is in contact with the surface of the V-groove. One side of the elastic clamping head 19 is provided with a clamp 18 that moves vertically and clamps one end of the platinum alloy wire, and the other side of the elastic clamping head 19 is provided with a clamp 20 that moves vertically and clamps one end of the platinum alloy wire. The support 6 is provided with an arc-shaped groove for the entry of the cochlear implant electrode at one end near the feed channel 2. The center of the cochlear implant electrode in the arc-shaped groove is consistent with the center of the aluminum alloy wire in the V-shaped groove. The bottom of the inner cavity of the second feeding channel 8 is provided with a linear guide rail 13, and a transfer frame 11 is slidably installed on the linear guide rail 13. A rotating support 12 is installed in the middle of the transfer frame 11 through a rotary motor. The top of the inner cavity of welding chamber 1 is provided with a sliding clamping device for positioning the welding pad and the end of the platinum alloy wire on the side near the chuck 18. The inner side of feed channel 28 near the entrance is equipped with a pusher to push out the solder pads.

[0020] The support 6 on the outside of the platinum alloy wire welding chamber 1 is inserted and transported to the welding chamber 1 via the conveyor belt 5. During the movement, the V-shaped groove provides initial positioning and orientation guidance for the platinum alloy wire. When it reaches the welding area in the welding chamber 1, the elastic clamping head 19 at the end away from the cochlear implant electrode presses down vertically. Its inner wall surface is in contact with the outer surface of the platinum alloy wire, and its outer wall is in contact with the surface of the V-shaped groove, forming a flexible clamping and stable constraint on the middle of the platinum alloy wire without causing rigid pressure damage.

[0021] After the platinum alloy wire is stably limited in the middle section, the first chuck 18 and the second chuck 20 operate in a time-sharing manner. After the platinum alloy wire is stably limited in the middle section, the second chuck 20 descends vertically and clamps one end of the platinum alloy wire. Subsequently, the end clamped by the second chuck 20 moves towards the feed channel 2, so that the platinum alloy wire at this end is connected to the cochlear implant electrode in the arc-shaped groove under tension. Since the center of the cochlear implant electrode in the arc-shaped groove is coaxial with the center of the platinum alloy wire in the V-shaped groove, the end of the platinum alloy wire is in contact with the electrode contact under concentric conditions, which facilitates stable welding and avoids the problems of indentation and stress concentration caused by rigid clamping. It also effectively suppresses the swaying and deviation of the wire during the conveying and welding process.

[0022] After the cochlear implant electrode welding is completed, the clamp 20 returns to its initial position. At this time, the elastic clamping head 19, located near the cochlear implant electrode, presses down vertically to provide secondary posture stabilization constraint on the middle section of the filament. Next, the clamp 18 holds the other end of the filament and moves it towards the feed channel 28. Simultaneously, the welding pad in the feed channel 28 is positioned and installed in the rotating support 12, and slides horizontally with the transfer frame 11 under the drive of the linear guide rail 13. By adopting a time-sharing clamping and tension alignment method, the filament is always kept in a taut and straight state during the welding process at both ends, fundamentally avoiding filament bending, loosening, or incomplete connection, and improving the weld formation quality and conductivity stability.

[0023] When the pad reaches the end of feed channel 28, the rotating support 12 rotates automatically, so that the contact surface on the pad faces the end of the filament; the pushing part enters the rotating support 12 and adsorbs the back of the pad, and pushes it away from feed channel 28. The sliding clamping part clamps the periphery of the pad, and the pad contact and the end of the filament are brought to the same height by the lifting adjustment, and then the two are precisely attached by sliding in the horizontal direction.

[0024] The second end welding is completed while the end of the filament is kept taut and in contact with the cochlear implant electrode and the welding pad. This allows the filament end and the cochlear implant electrode to be connected in a concentric fit, significantly improving the welding alignment accuracy.

[0025] See Figure 3As shown, the sliding clamping component includes a linear guide rail 28 installed in the inner cavity of the welding chamber 1. A vertical electric push rod 14 is installed on the slider of the linear guide rail 28. An electric gripper 15 for clamping the outer surface of the welding pad is installed at the pushing end of the vertical electric push rod 14. The upper end face of the support 6 is provided with a positioning groove 16 for the entry of the solder pad on the side adjacent to the sliding clamp.

[0026] When the solder pad is conveyed to the side of the upper end of the support 6 near the sliding clamping member via the second feeding channel 8, the sliding clamping member clamps the solder pad externally, so that the solder pad completes the initial positioning and attitude correction before entering the welding area. Subsequently, the vertical electric push rod 14 slides along the second linear guide rail 28 towards the end of the platinum alloy wire until it reaches the top of the positioning groove 16. During the pushing process, the solder pad is always in a controlled state.

[0027] During the process of the vertical electric actuator 14 moving the pad forward, the spatial position of the pad contact point is aligned with the end of the platinum alloy wire, either coaxially or at the same height. When the pad is pushed to the terminal docking position, under the clamping constraint of the electric gripper 15, the pad contact point and the end of the platinum alloy wire are precisely fitted, thereby completing stable welding under tension. After welding is completed, the pad enters the positioning groove 16, and the sliding clamping part returns to its initial height.

[0028] The pushing unit includes a pusher 26 driven by a stroke cylinder, a pusher 9 driven by a rotary motor is mounted on the pusher 26, and an adsorption plate 10 is embedded in the middle of one side of the pusher 9. The upper part of the rotating support 12 is open, and the inner side of the rotating support 12 is designed with an L-shaped structure. The middle part of the rotating support 12 is provided with a slot for the push plate 9 to enter.

[0029] The solder pad is installed into the rotating support 12 through the opening and moves with the transfer frame 11. When it reaches the end of the feed channel 8, the middle of the rotating support 12 rotates. At this time, one side of the solder pad contact point faces the end of the platinum alloy wire. The push plate 9 is driven by the push seat 26 and enters the interior of the rotating support 12 from the slot. The adsorption plate 10 adsorbs and fixes the solder pad. The push plate 9 drives the solder pad to rotate in an orientation through rotation, so that the solder pad contact point gradually turns and faces the end of the platinum alloy wire. When the solder pad rotates to the target angle and is pushed to the docking position, the solder pad contact point and the end of the platinum alloy wire are aligned and kept in contact, completing the pre-welding alignment.

[0030] See Figure 5 As shown, a transfer cylinder 21 is slidably provided on the side of the inner cavity of the welding chamber 1 away from the sliding clamping member. A bracket 22 is installed on the lower surface of the transfer cylinder 21, and the end of the transfer cylinder 21 is adjacent to the arc groove. A support plate 23 is installed on the side of the inner wall of the welding chamber 1 close to the conveyor belt 5. A horizontal electric push rod that pushes the bracket 22 to move is installed on the inner wall of the welding chamber 1.

[0031] In the initial state, the transfer cylinder 21 is connected to the feeding channel 2, and the transfer cylinder 21 is attached to the inner wall of the welding chamber 1. The cochlear implant electrode enters the transfer cylinder 21 and does not leave the transfer cylinder 21. The bracket 22 moves horizontally under the drive of the horizontal electric push rod and pushes the transfer cylinder 21, which is fixedly connected to it, to move horizontally in the direction of the arc groove, so that the cochlear implant electrode increases the alignment area without leaving the transfer cylinder 21.

[0032] During the transfer process, the transfer tube 21 always plays a guiding and protective role, keeping the cochlear implant electrode in a constant posture and stable trajectory. When the transfer tube 21 moves to the terminal position, its end forms a guiding transition structure with the entrance of the arc-shaped groove. Under the guidance of the pushing inertia and the groove structure, the cochlear implant electrode smoothly enters the arc-shaped groove, achieving coaxial docking with the end of the platinum alloy wire, providing a stable fit posture for subsequent welding.

[0033] See Figure 1 and Figure 6 As shown, a connecting plate 3 is fixed at the end of the feeding channel 2, and a rotating frame 7 driven by a servo motor on the connecting plate 3 is installed inside the feeding channel 2. The outer surface of the rotating frame 7 is provided with several insertion slots 4, and the upper surface of the feeding channel 2 is provided with a notch that communicates with any one of the insertion slots 4. The electrode that enters the insertion groove 4 through the notch rotates to reach the lowest position, and the corresponding insertion groove 4 is connected to the transfer cylinder 21. Inside the feeding channel 2, on one side adjacent to the connecting plate 3, there is a pusher 25 driven by a segmented pusher cylinder, and the pusher 25 is connected to the transfer cylinder 21.

[0034] The cochlear implant electrode falls into the corresponding insertion slot 4 through the notch, and completes single-piece separation and initial posture constraint under the limiting action of the inner wall of the feeding channel 2.

[0035] Driven by a servo motor, the rotating frame 7 rotates in steps around its axis at a preset angle, causing the electrodes in the placement slot 4 to be fed sequentially from above. When a placement slot 4 rotates to its lowest position, the placement slot 4 is connected to the inlet position of the transfer cylinder 21, thus forming a channel for the electrodes to be transferred from the rotating frame 7 to the transfer cylinder 21. The segmented pushing cylinder pushes the pusher plate 25 forward along the feeding axis, pushing the electrodes in the placement slot 4 out of the slot and into the transfer cylinder 21, so that the electrodes can smoothly enter the transfer cylinder 21 without rolling or jumping, and then enter the subsequent arc-shaped slot for guidance and alignment.

[0036] See Figure 2 , Figure 4 and Figure 7As shown, the upper surface of the support bracket 6 and the inner side of the V-shaped groove are provided with a fitting groove 27. There are two fitting grooves 27, which are located directly below the sliding distance of the first chuck 18 and the second chuck 20, respectively. They are used to form a fitting guide and auxiliary limit for the end of the platinum alloy wire when the first chuck 18 or the second chuck 20 moves. Both chuck 18 and chuck 20 slide on their respective slide rails. When sliding, chuck 18 and chuck 20 do not work downwards at the same time. When chuck 18 or chuck 20 is downward, it clamps the end of the platinum alloy wire and then slides in the direction of the corresponding end.

[0037] When welding is required at one end of the platinum alloy wire, the second clamp 20 descends vertically, flexibly clamping the end of the platinum alloy wire and maintaining a stable posture under the guidance of the groove 27. Subsequently, while maintaining the clamping state, the second clamp 20 moves along the slide rail toward the electrode, pushing the clamped end of the platinum alloy wire to the welding position under tension, so that it can be welded to the cochlear implant electrode. This completes the precise positioning and tension control before welding. After welding at this end, the second clamp 20 rises and returns to the initial position, and the first clamp 18 at the other end repeats the above actions, so that the two ends of the platinum alloy wire can be welded sequentially under tension and controlled bonding conditions.

[0038] See Figure 2 As shown, pulsed laser welding heads 17 are provided at the top of the inner cavity of the welding chamber 1 and at both ends of the platinum alloy wire. An industrial camera for identifying the contact points of the platinum alloy wire end and the welding pad is embedded on the lower surface of one pulsed laser welding head 17. Both the entrance and exit of the welding chamber 1 are equipped with lifting and sealing doors.

[0039] The industrial camera is used to capture images of the platinum alloy wire tip and the pad contact point, and to identify and determine the alignment status of the two. When the wire tip and the pad contact point are detected to have reached the set bonding position, the control system triggers the corresponding pulsed laser welding head 17 to perform welding, thereby realizing the linkage between pre-welding bonding confirmation and welding.

[0040] During the welding process, the entrance and exit of the welding chamber 1 are closed by lifting sealing doors. The sealing doors automatically descend and close before entering the welding station, forming a closed welding environment to isolate external dust and airflow interference and prevent laser scattering or fume escape.

[0041] In use, this invention employs two elastic clamping heads 19 and time-divided clamping heads 18 and 20. The elastic clamping head 19, located away from the cochlear implant electrode, presses down vertically, creating a flexible clamp on the middle of the platinum alloy wire without causing rigid damage. The clamping head 20 descends vertically and clamps one end of the platinum alloy wire. Subsequently, the end clamped by the clamping head 20 moves towards the feed channel 2, allowing the platinum alloy wire at that end to align with the cochlear implant electrode in the arc-shaped groove under tension. Since the center of the cochlear implant electrode in the arc-shaped groove aligns with the platinum alloy wire in the V-shaped groove... The coaxial arrangement of the wire's center ensures that the end of the platinum alloy wire fits against the electrode contact under concentric conditions, avoiding indentations and stress concentration caused by rigid clamping. The elastic clamping head 19, located near the cochlear implant electrode, presses down vertically to provide secondary posture stabilization constraint on the middle section of the wire. Then, the chuck 18 clamps the other end of the wire and moves it towards the feed channel 28. By adopting a time-sharing clamping and tension alignment method, the wire remains in a taut and straight state during the welding process at both ends, fundamentally avoiding wire bending, loosening, or incomplete connection, and improving the weld formation quality and conductivity stability. By setting up a pushing part, when the solder pad reaches the end of the second feeding channel 8, the middle of the rotating support 12 rotates. At this time, one side of the solder pad contact point faces the end of the platinum alloy wire. The push plate 9 is driven by the push base 26 and enters the interior of the rotating support 12 from the slot. The adsorption plate 10 adsorbs and fixes the solder pad. The push plate 9 drives the solder pad to rotate in an orientation through rotation, so that the solder pad contact point gradually turns and faces the end of the platinum alloy wire. When the solder pad rotates to the target angle and is pushed to the docking position, the solder pad contact point and the end of the platinum alloy wire are aligned and kept in contact, completing the pre-welding alignment. By setting a sliding transfer cylinder 21, initially, the transfer cylinder 21 is connected to the feeding channel 2. The cochlear implant electrode enters the transfer cylinder 21. Under the drive of the horizontal electric push rod, the transfer cylinder 21 moves as a whole towards the arc-shaped groove, so that the cochlear implant electrode increases the alignment area without leaving the transfer cylinder 21. The end of the transfer cylinder 21 forms a guide transition structure with the entrance of the arc-shaped groove. Under the guidance of the pushing inertia and the groove structure, the cochlear implant electrode smoothly enters the arc-shaped groove and achieves coaxial docking with the end of the platinum alloy wire. The rotating frame 7 rotates the insertion slot 4 to its lowest position, which is connected to the inlet position of the transfer cylinder 21, thus forming a channel for the electrode to be transferred from the rotating frame 7 to the transfer cylinder 21. The segmented pushing cylinder pushes the pusher plate 25 forward along the feeding axis, pushing the electrode in the insertion slot 4 out of the slot and into the transfer cylinder 21, so that the electrode can smoothly enter the transfer cylinder 21 without rolling or jumping, and then enter the subsequent arc-shaped groove for guidance and alignment.

[0042] 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 simple 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 platinum alloy wire welding device for cochlear implants, comprising a welding chamber (1), wherein a conveyor belt (5) is installed in a channel in the middle of the welding chamber (1), characterized in that: The surface of the conveyor belt (5) is provided with several bearing supports (6), and each bearing support (6) is provided with a V-shaped groove into which a platinum alloy wire enters. The welding chamber (1) is provided with a second feeding channel (8) for transferring the welding pad on one side, and a first feeding channel (2) for transferring the cochlear implant electrode on the other side of the welding chamber (1). The pads are in a vertical position during transfer; Two elastic clamping heads (19) are provided at the top of the inner cavity of the welding chamber (1) and above the platinum alloy wire. The inner wall of each elastic clamping head (19) is in contact with the upper outer surface of the platinum alloy wire, and the outer wall of each elastic clamping head (19) is in contact with the surface of the V-groove. One side of the elastic clamping head (19) is provided with a clamping head (18) that moves vertically and clamps one end of the platinum alloy wire, and the other side of the elastic clamping head (19) is provided with a clamping head (20) that moves vertically and clamps one end of the platinum alloy wire. The bearing support (6) is provided with an arc-shaped groove for the entry of the cochlear implant electrode at one end near the feeding channel (2). The center of the cochlear implant electrode in the arc-shaped groove is consistent with the center of the aluminum alloy wire in the V-shaped groove. The bottom of the inner cavity of the second feeding channel (8) is provided with a linear guide rail (13), and a transfer frame (11) is slidably installed on the linear guide rail (13). A rotating support (12) is installed in the middle of the transfer frame (11) through a rotary motor. The welding chamber (1) has a sliding clamping device that positions the welding pad and the end of the platinum alloy wire at the top of the inner cavity near the chuck (18). The inner side of the feed channel 2 (8) near the entrance is provided with a pusher to push out the solder pads.

2. The platinum alloy wire welding device for cochlear implants according to claim 1, characterized in that, The sliding clamping component includes a second linear guide rail (28) installed in the inner cavity of the welding chamber (1). A vertical electric push rod (14) is installed on the slider of the second linear guide rail (28). An electric gripper (15) for clamping the outer surface of the welding pad is installed at the pushing end of the vertical electric push rod (14). The upper end face of the bearing support (6) is provided with a positioning groove (16) for the entry of the solder pad on the side adjacent to the sliding clamp.

3. The platinum alloy wire welding device for cochlear implants according to claim 1, characterized in that, The pushing unit includes a pusher (26) driven by a stroke cylinder, on which a pusher plate (9) driven by a rotary motor is mounted, and an adsorption plate (10) is embedded in the middle of one side of the pusher plate (9). The upper part of the rotating support (12) is open, and the inner side of the rotating support (12) is set with an L-shaped structure. The middle part of the rotating support (12) is provided with a slot for the push plate (9) to enter.

4. The platinum alloy wire welding device for cochlear implants according to claim 1, characterized in that, The inner cavity of the welding chamber (1) is slidably provided with a transfer cylinder (21) on the side away from the sliding clamp. A bracket (22) is installed on the lower surface of the transfer cylinder (21), and the end of the transfer cylinder (21) is adjacent to the arc groove. A support plate (23) is installed on the inner wall of the welding chamber (1) on the side close to the conveyor belt (5). A horizontal electric push rod that pushes the bracket (22) to move is installed on the inner wall of the welding chamber (1).

5. The platinum alloy wire welding device for cochlear implants according to claim 4, characterized in that, The end of the feeding channel (2) is fixed with a connecting plate (3), and the inside of the feeding channel (2) is equipped with a rotating frame (7) driven by a servo motor on the connecting plate (3). The outer surface of the rotating frame (7) is provided with several insertion slots (4), and the upper surface of the feeding channel (2) is provided with a notch that communicates with any one of the insertion slots (4). The electrode that enters the insertion groove (4) through the notch is rotated and reaches the lowest position. The corresponding insertion groove (4) is connected to the transfer cylinder (21). Inside the feed channel (2), a pusher (25) is installed on one side adjacent to the connecting plate (3), which is driven by a segmented pusher cylinder. The pusher (25) is connected to the transfer cylinder (21).

6. The platinum alloy wire welding device for cochlear implants according to claim 1, characterized in that, The upper surface of the bearing support (6) and the inner side of the V-shaped groove are provided with a fitting groove (27). There are two fitting grooves (27), which are located directly below the sliding distance of the first clamp (18) and the second clamp (20), respectively. Both the first chuck (18) and the second chuck (20) slide on their respective slide rails. When sliding, the first chuck (18) and the second chuck (20) do not work downwards at the same time. When chuck one (18) or chuck two (20) is downward, it clamps the end of the platinum alloy wire and then slides in the direction of the corresponding end.

7. The platinum alloy wire welding device for cochlear implants according to claim 1, characterized in that, The welding chamber (1) is equipped with pulsed laser welding heads (17) at the top of the inner cavity and at both ends of the platinum alloy wire. An industrial camera for identifying the contact points of the platinum alloy wire end and the welding pad is embedded on the lower surface of the pulsed laser welding head (17).

8. The platinum alloy wire welding device for cochlear implants according to claim 1, characterized in that, The welding chamber (1) is equipped with sealed doors at both the entrance and exit of the channel.

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