Full-automatic welding equipment for loudspeaker

Abstract

The invention relates to the technical field of loudspeaker assembling equipment, and discloses loudspeaker full-automatic welding equipment which comprises a spot welding machine body, a conveying belt and a jig plate, the conveying belt is used for circulating the jig plate, and a limiting rail attached to the surface of the conveying belt is arranged on the spot welding machine body; a feeding station, a welding station and a discharging station are sequentially arranged on the spot welding machine body in the conveying direction of the conveying belt, mechanical clamping jaws inserted into the limiting rails are arranged at the feeding station and the discharging station in a lifting mode, and a spot welding mechanism used for welding the horn supports and the leads is arranged at the welding station in a lifting mode. The mechanical clamping jaw and the spot welding mechanism are both located on the same side of the limiting rail, a sliding rail is arranged on the side, away from the spot welding mechanism, of the limiting rail on the spot welding machine body, a containing table is arranged on the sliding rail in a sliding mode, a sliding assembly used for adjusting the position of the containing table is arranged on the spot welding machine body, and a positioning piece for positioning a jig plate is further arranged on the containing table. The loudspeaker support has the effect of improving the welding precision between the loudspeaker support and the lead.

Description

Technical Field

[0001] This application relates to the field of loudspeaker assembly equipment technology, and in particular to a fully automatic loudspeaker welding equipment. Background Technology

[0002] In loudspeaker manufacturing, the soldering of the internal speaker bracket and lead wires is a crucial step. The speaker bracket, as a vital component supporting and securing the lead wires, provides a stable mounting base. The lead wires, in turn, are responsible for accurately transmitting audio signals to the speaker's driver unit. The reliable connection between the two directly affects the speaker's electrical and acoustic performance. Problems in the soldering of the bracket and lead wires can lead to unstable signal transmission, sound distortion, and a series of other issues, severely impacting the overall quality and performance of the speaker. Therefore, ensuring high precision and reliability in the soldering of the speaker bracket and lead wires is essential for producing high-quality loudspeaker products.

[0003] Currently, the main welding methods used in the welding process of speaker brackets and leads include manual welding and semi-automatic welding. Manual welding is a more traditional method, where workers use welding tools and rely on experience and eyesight to spot weld the leads to the bracket. This method can meet the needs of some small-scale production or where welding precision requirements are not high. Semi-automatic welding, on the other hand, introduces simple mechanical equipment to assist in the welding process, such as using mechanical devices to fix the position of the bracket and leads before workers perform the welding operation. Compared to manual welding, this method improves production efficiency to a certain extent.

[0004] However, existing welding methods have many obvious drawbacks. For manual welding, the biggest problem is the difficulty in guaranteeing welding precision. Because it relies entirely on the worker's experience and skills, there are significant differences in welding quality between different workers. While semi-automatic welding introduces mechanical equipment for positioning assistance, manual intervention is still required to ensure correct lead wire placement, resulting in low automation and difficulty in achieving efficient and stable mass production. Especially in lead wire fixing and precise welding, existing technologies cannot effectively solve the problem of multi-station collaborative operation, thus limiting production efficiency and product quality. Summary of the Invention

[0005] To improve the welding accuracy between the speaker bracket and the lead wire, this application provides a fully automatic speaker welding device.

[0006] The fully automatic loudspeaker welding equipment provided in this application adopts the following technical solution: A fully automatic loudspeaker welding device includes a spot welding machine body, a conveyor belt mounted on the spot welding machine body, and a fixture plate for placing a speaker bracket and lead wires. The conveyor belt is used to transfer the fixture plate. The spot welding machine body is provided with a limiting track that conforms to the surface of the conveyor belt. The spot welding machine body is provided with a loading station, a welding station, and an unloading station in sequence along the conveying direction of the conveyor belt. Mechanical grippers that are inserted into the limiting track are raised and lowered at both the loading and unloading stations. A spot welding mechanism for welding the speaker bracket and lead wires is raised and lowered at the welding station. The mechanical grippers and the spot welding mechanism are both located on the same side of the limiting track. A slide rail is provided on the spot welding machine body on the side of the limiting track away from the spot welding mechanism. A placement platform is slidably mounted on the slide rail. The spot welding machine body is provided with an adjustment component for adjusting the position of the placement platform, and a positioning component for positioning the fixture plate is also provided on the placement platform.

[0007] By adopting the above technical solution, the fixture plate carrying the speaker bracket and lead wire is placed on the conveyor belt and accurately transferred to the loading station under the guidance of the limiting track. At the loading station, the mechanical gripper descends and precisely inserts into the limiting track, firmly gripping the fixture plate and lifting it. Subsequently, the placement table moves to the loading station area under the drive of the positioning component, and the mechanical gripper releases the fixture plate, allowing it to be stably placed on the placement table via the positioning element. Next, the placement table precisely delivers the fixture plate to the welding station, where the spot welding mechanism aligns with the welding positions of the speaker bracket and lead wire to perform efficient and stable welding operations. Finally, the welded fixture plate is conveyed from the placement table to the unloading station, where the mechanical gripper grabs the fixture plate and places it back onto the conveyor belt, thus realizing a fully automated welding process and significantly improving production efficiency and welding quality.

[0008] Optionally, the fixture plate has several placement positions for inserting the speaker bracket and lead wires distributed along its own length direction. The speaker bracket is provided with a jacking groove to facilitate the insertion of the lead wire. The fixture plate is provided with a pair of wire clamping posts corresponding to each placement position. Several pairs of wire clamping posts are distributed along the length direction of the fixture plate, and each wire clamping post is fitted with a rubber sleeve. The two ends of the lead wire pass through the notch of the jacking groove and are crossed and clamped between the two rubber sleeves.

[0009] By adopting the above technical solution, when assembling the speaker bracket and lead wire, the speaker bracket is first placed in the designated position on the fixture plate, and the lead wire is embedded into the insertion slot on the speaker bracket. Then, using the clamping posts and rubber sleeves on the fixture plate, the two ends of the lead wire are fixed in a cross-clamping manner, improving the accuracy of the relative position between the lead wire and the speaker bracket. The multiple placement positions distributed along the length of the fixture plate can simultaneously accommodate multiple speaker bracket and lead wire combinations, significantly increasing the number of units assembled at once. This method not only significantly improves the accuracy of the lead wire and speaker bracket assembly but also effectively reduces the possibility of lead wire position displacement during welding, thereby improving the stability and reliability of welding quality, and significantly enhancing production efficiency and overall product consistency.

[0010] Optionally, both ends of the fixture plate are provided with positioning grooves, and the positioning components are multiple correction positioning balls set on the placement platform. The correction positioning balls correspond one-to-one with the positioning grooves on the fixture plate and are inserted into each other.

[0011] By adopting the above technical solution, at the loading station, after the mechanical gripper releases the fixture plate, the fixture plate falls onto the placement table under gravity. The positioning grooves at both ends of the fixture plate align with the alignment positioning balls on the placement table, achieving a plug-in fit. Utilizing the spherical guide surface of the alignment positioning balls, the fixture plate can automatically correct positional deviations during its descent, improving positioning accuracy. This design significantly enhances the positioning accuracy and assembly efficiency of the fixture plate, laying the foundation for the efficient and stable execution of subsequent welding processes.

[0012] Optionally, the limiting track includes two parallel guide plates, with guide ramps on the feed ends of the two guide plates on opposite sides. The distance between the two guide plates is adjustable. A rotary motor is installed on the spot welding machine body, and a bidirectional screw is coaxially connected to the output shaft of the rotary motor. The bidirectional screw is set perpendicular to the conveying direction of the conveyor belt. A connecting rod is vertically installed on the top wall of each guide plate. An adjusting block is sleeved on the top of the connecting rod. Two adjusting blocks on the side closer to the bidirectional screw are respectively threaded onto the corresponding threaded sections of the bidirectional screw. Two adjusting blocks on the side away from the bidirectional screw slide together through a guide rod, which is set parallel to the bidirectional screw on the spot welding machine body.

[0013] By adopting the above technical solution, when it is necessary to adjust the distance between the two guide plates, the rotating motor drives the bidirectional screw to rotate, causing the adjusting block connected to the bidirectional screw to move along the thread direction. Under the guidance of the guide rod, the two guide plates move synchronously towards or away from each other, thereby precisely adjusting the spacing of the limit rails according to the actual width of the fixture plate. This design ensures that fixture plates of different specifications remain stably centered during transmission, reducing the possibility of jamming or deviation caused by size differences, significantly improving the equipment's compatibility with various fixture plates, and effectively improving the accuracy and reliability of the welding process.

[0014] Optionally, the limiting track is provided with a stop bar for intercepting the fixture plate. The stop bar is located at the loading station and is set between two guide plates. One end of the stop bar is fixed to one of the guide plates, and the other end slides through the opposite guide plate.

[0015] By adopting the above technical solution, the stop bar can limit the dwell position of the jig plate at the loading station, effectively reducing loading failures or insufficient welding accuracy caused by jig plate misalignment. Simultaneously, since one end of the stop bar is fixed to the guide plate, and the other end can slide through the opposite guide plate, this structural design allows the stop bar to be adaptively adjusted according to the flexible spacing of the limiting track, thereby improving the equipment's adaptability to jig plates of different specifications and enhancing the overall versatility and flexibility of the equipment.

[0016] Optionally, the spot welding machine body is equipped with vertical linear guides at both the loading and unloading stations. A fixed box is slidably mounted on the linear guide. The mechanical gripper includes a fixed plate and a movable plate arranged parallel to the limiting rail. The fixed plate and movable plate are distributed along a length direction perpendicular to the limiting rail. A groove is formed at the bottom of the fixed box along the direction from the movable plate towards the fixed plate. A slider is slidably mounted in the groove. The slider is located on top of the movable plate, and its top extends into the fixed box. The slider overlaps the inner bottom wall of the fixed box and is connected to the fixed plate. The fixed boxes slide together along the guide groove. The fixed box is equipped with a driving component that drives the slider to reciprocate. The driving component includes a driven eccentric gear, a driving eccentric gear that meshes with the driven eccentric gear, and a stepper motor that drives the driving eccentric gear to rotate. The driven eccentric gear is rotatably mounted on the top of the slider, and there are two driven eccentric gears distributed along the guide groove. The driving eccentric gear is located between the two driven eccentric gears and rotates together to mesh with the two driven eccentric gears. The output shaft of the stepper motor is coaxially connected to the rotating shaft of the driving eccentric gear.

[0017] By adopting the above technical solution, during the clamping process of the mechanical gripper at the loading and unloading stations, the stepper motor drives the active eccentric gear to rotate. The active eccentric gear, through meshing with two driven eccentric gears, drives the slider to reciprocate within the slide groove, thereby pushing the moving plate to open and close relative to the fixed plate, completing the gripping or release of the jig plate. This design achieves stable clamping and positioning of the jig plate at the loading and unloading stations, reducing the possibility of positioning errors and inefficiencies caused by traditional manual operation, and significantly improving the overall production efficiency and quality of the speaker bracket and lead wire welding.

[0018] Optionally, rubber pads are provided on opposite sides of both the fixed plate and the movable plate.

[0019] By adopting the above technical solution, the rubber pad effectively increases the friction between the fixed plate and the moving plate and the fixture plate, thereby providing a more stable gripping effect when the mechanical gripper holds the fixture plate and reducing the slippage or displacement of the fixture plate during the gripping process. In addition, the rubber pad also has a certain cushioning effect, which can reduce the possibility of impact damage when the fixed plate and the moving plate directly contact the fixture plate, protect the surface integrity of the fixture plate, and thus improve the overall reliability and service life of the equipment.

[0020] Optionally, a connecting plate is provided on the side of the placement platform near the slide rail. The connecting plate is L-shaped. The adjustment component includes a rack on the side of the slide rail away from the limit track, a drive gear rotatably mounted on the connecting plate, and a servo motor that drives the drive gear to rotate. The rack is parallel to the slide rail, and the drive gear meshes with the rack. Ear plates are provided at both ends of the rack on the slide rail. Limit switches electrically connected to the servo motor are provided on opposite sides of the two ear plates. The two limit switches correspond to the loading and unloading positions, respectively. A proximity switch electrically connected to the servo motor is also provided on the slide rail. The proximity switch is located on the slide rail corresponding to the welding position. When the placement platform slides to the welding position, the connecting plate moves to trigger the proximity switch, and the proximity switch sends an electrical signal to stop the servo motor.

[0021] By adopting the above technical solution, a servo motor drives a drive gear to rotate, which meshes with a rack, allowing the placement platform to move smoothly along the slide rail. During the movement, when the placement platform reaches the loading or unloading station, the connecting plate triggers the corresponding limit switch, stopping the servo motor and ensuring precise positioning of the placement platform. When the placement platform slides to the welding station, the connecting plate triggers a proximity switch, and the servo motor stops promptly upon receiving the stop signal, thus achieving precise switching of the placement platform between different stations. This method not only improves the automation level of the equipment but also effectively ensures the positional accuracy of the fixture plate during welding, thereby enhancing the reliability and consistency of the speaker bracket and lead wire welding.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The fixture plate carrying the speaker bracket and lead wire is placed on the conveyor belt and accurately transferred to the loading station under the guidance of the limiting track. At the loading station, the mechanical gripper descends and precisely inserts into the limiting track, firmly gripping the fixture plate and lifting it. Subsequently, the placement table moves to the loading station area under the drive of the positioning component, and the mechanical gripper releases the fixture plate, allowing it to be securely placed on the placement table via the positioning element. Next, the placement table precisely delivers the fixture plate to the welding station, where the spot welding mechanism aligns with the welding positions of the speaker bracket and lead wire for efficient and stable welding. Finally, the welded fixture plate is conveyed from the placement table to the unloading station, where the mechanical gripper grabs the fixture plate and places it back onto the conveyor belt, thus realizing a fully automated welding process and significantly improving production efficiency and welding quality. 2. When assembling the speaker bracket and lead wire, first place the speaker bracket in the designated position on the jig plate, and then insert the lead wire into the insertion slot on the speaker bracket. Subsequently, using the wire clamping posts and rubber sleeves on the jig plate, the two ends of the lead wire are fixed in a cross-clamping manner, improving the accuracy of the relative position of the lead wire and the speaker bracket. The multiple placement positions distributed along the length of the jig plate can simultaneously accommodate multiple speaker bracket and lead wire combinations, significantly increasing the number of units assembled at once. This method not only significantly improves the accuracy of the lead wire and speaker bracket assembly but also effectively reduces the possibility of lead wire misalignment during welding, thereby improving the stability and reliability of welding quality, significantly enhancing production efficiency and overall product consistency. 3. At the loading station, after the mechanical grippers release the jig plate, the jig plate falls onto the placement table under gravity. The positioning slots at both ends of the jig plate align with the alignment positioning balls on the placement table, achieving a plug-in fit. Utilizing the spherical guide surface of the alignment positioning balls, the jig plate can automatically correct positional deviations during its descent, improving positioning accuracy. This design significantly enhances the positioning accuracy and assembly efficiency of the jig plate, laying the foundation for the efficient and stable execution of subsequent welding processes. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram illustrating the assembly of the speaker bracket and lead wires on the fixture plate in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram illustrating the connection relationship between the guide plate, the adjusting block, and the bidirectional screw in the embodiments of this application.

[0026] Figure 4This is a cross-sectional view illustrating the connection relationship between the fixed plate, the movable plate, and the fixed box in the embodiments of this application.

[0027] Figure 5 This is a schematic diagram illustrating the positional relationship between the mounting base, lifting bracket, laser welding gun, and welding rod in the embodiments of this application.

[0028] Figure 6 This is a schematic diagram illustrating the connection relationship between the rack, drive gear, and servo motor in the embodiments of this application.

[0029] Figure 7 This is a cross-sectional view illustrating the connection relationship between the lifting bracket, the protective plate, and the camera in the embodiments of this application.

[0030] Explanation of reference numerals in the attached figures: 01. Speaker bracket; 011. Connecting slot; 02. Lead wire; 1. Spot welding machine body; 11. Loading station; 12. Welding station; 13. Unloading station; 14. Slide rail; 141. Ear plate; 142. Limit switch; 143. Proximity switch; 15. Linear guide rail; 151. Fixing box; 1511. Slide groove; 2. Conveyor belt; 3. Fixture plate; 31. Placement position; 32. Wire clamping post; 321. Rubber sleeve; 33. Positioning slot; 4. Mechanical gripper; 41. Fixing plate; 411. Rubber pad; 42. Moving plate; 421. Slider; 5. Spot welding mechanism; 51. Mounting base; 511 512. Guide vertical groove; 513. Lead screw; 52. Reciprocating motor; 53. Lifting bracket; 54. Protective plate; 55. Camera; 56. Laser welding gun; 57. Welding rod; 68. Placement platform; 69. Connecting plate; 60. Positioning component; 71. Limiting rail; 72. Guide plate; 73. Connecting rod; 74. Adjusting block; 75. Rotary motor; 76. Bidirectional screw; 77. Guide rod; 78. Stop rod; 89. Driving component; 80. Driven eccentric gear; 81. Driven eccentric gear; 82. Stepper motor; 90. Positioning assembly; 91. Rack; 92. Drive gear; 93. Servo motor. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0032] This application discloses a fully automated loudspeaker welding device.

[0033] Reference Figure 1 and Figure 2An automated loudspeaker welding device includes a spot welding machine body 1, a conveyor belt 2, and a fixture plate 3. The conveyor belt 2 runs through the spot welding machine body 1 and is used to transfer the fixture plate 3, which is used to hold the loudspeaker bracket 01 and the lead wire 02. Along the conveying direction of the conveyor belt 2, the spot welding machine body 1 is provided with a loading station 11, a welding station 12, and a unloading station 13. Mechanical grippers 4 are raised and lowered at both the loading station 11 and the unloading station 13, while a spot welding mechanism 5 is raised and lowered at the welding station 12. The mechanical grippers 4 and the spot welding mechanism 5 are both located on the same side of a limiting rail 7. A slide rail 14 is fixedly installed on the side of the limiting rail 7 opposite to the spot welding mechanism 5. A placement platform 6 is slidably mounted on the slide rail 14, and the placement platform 6 is used to transfer the fixture plate 3 between the loading station 11, the welding station 12, and the unloading station 13.

[0034] Reference Figure 1 and Figure 2 The fixture plate 3, containing the speaker bracket 01 and lead wire 02, is placed on the conveyor belt 2 and transferred to the loading station 11. At the loading station 11, the mechanical gripper 4 descends, picks up the fixture plate 3, and lifts it. Then, the placement table 6 moves along the guide rail 14 to the loading station 11 area, and the mechanical gripper 4 releases the fixture plate 3, placing it on the placement table 6. Next, the placement table 6 sends the fixture plate 3 to the welding station 12, where the spot welding mechanism 5 performs spot welding on the positions of the speaker bracket 01 and lead wire 02. Finally, the welded fixture plate 3 is transported from the placement table 6 to the unloading station 13, where the mechanical gripper 4 picks up the fixture plate 3 and places it back onto the conveyor belt 2, thus achieving a fully automated welding process.

[0035] Reference Figure 2 The fixture plate 3 has several placement positions 31 distributed along its length. In this embodiment, six placement positions 31 are used as an example. Each placement position 31 is used to insert the speaker bracket 01 and the lead wire 02. In this embodiment, the speaker bracket 01 to be spot welded is provided with a circumferential insertion groove 011 to facilitate the insertion of the lead wire 02. A pair of wire clamping posts 32 are fixedly provided on the fixture plate 3 for each placement position 31. Several pairs of wire clamping posts 32 are distributed along the length of the fixture plate 3, and each wire clamping post 32 is fitted with a rubber sleeve 321. The two ends of the lead wire 02 pass through the notch of the insertion groove 011, and the two ends of the lead wire 02 are crossed and clamped between the two rubber sleeves 321. The function of the rubber sleeve 321 is to protect the lead wire 02 and prevent damage to the lead wire 02 during clamping. At the same time, it also plays a certain role in fixing the lead wire 02 so that it is not easy to move during the welding process.

[0036] Reference Figure 1 and Figure 3The spot welding machine body 1 is equipped with a limiting track 7 that conforms to the surface of the conveyor belt 2. The limiting track 7 includes two parallel guide plates 71. The feed ends of the two guide plates 71 on opposite sides are provided with guide slopes, and the distance between the two guide plates 71 is adjustable. A vertical connecting rod 711 is fixedly installed on the top wall of each guide plate 71, and an adjusting block 712 is slidably sleeved on the top of the connecting rod 711. A rotary motor 72 is fixedly installed on the bottom wall of the spot welding machine body 1. A bidirectional screw 721 is coaxially fixedly sleeved on the output shaft of the rotary motor 72. The bidirectional screw 721 is rotatably mounted on the spot welding machine body 1 perpendicular to the conveying direction of the conveyor belt 2. Two adjusting blocks 712 on the side closer to the bidirectional screw 721 are respectively threaded onto the corresponding threaded sections of the bidirectional screw 721. The two adjusting blocks 712 on the side away from the bidirectional screw 721 slide together through a guide rod 73. The guide rod 73 is parallel to the bidirectional screw 721 and fixedly mounted on the spot welding machine body 1.

[0037] Reference Figure 3 A stop bar 74 is provided on the limiting track 7. The stop bar 74 is located at the loading station 11 and is set between two guide plates 71. One end of the stop bar 74 is fixed to one of the guide plates 71, and the other end slides through the opposite guide plate 71.

[0038] Reference Figure 1 The mechanical gripper 4 and the spot welding mechanism 5 are both located on the same side of the limiting rail 7. Vertical linear guide rails 15 are fixedly installed on the spot welding machine body 1 at the corresponding loading station 11 and unloading station 13. A fixed box 151 is slidably sleeved on the linear guide rail 15. In this embodiment, the linear guide rail 15 is a commercially available electric guide rail, and the lifting and lowering of the fixed box 151 is controlled by an external control system.

[0039] Reference Figure 1 and Figure 4 The mechanical gripper 4 includes a fixed plate 41 and a movable plate 42, which are distributed along a length direction perpendicular to the limiting track 7 and are parallel to the limiting track 7. A groove 1511 is formed at the bottom of the fixed box 151 along the direction from the movable plate 42 toward the fixed plate 41. A slider 421 is slidably disposed within the groove 1511, and the slider 421 is fixedly disposed on the top of the movable plate 42. The top of the slider 421 extends into the fixed box 151, and the slider 421 overlaps the inner bottom wall of the fixed box 151, slidingly engaging with the fixed box 151 along the groove 1511. A driving component 8 is provided inside the fixed box 151 to drive the slider 421 to reciprocate.

[0040] Reference Figure 1 and Figure 4The driving component 8 includes a driven eccentric gear 81, a driving eccentric gear 82, and a stepper motor 83. The driven eccentric gear 81 is rotatably mounted on the top of the slider 421, and two driven eccentric gears 81 are distributed along the guide groove 1511. The driving eccentric gear 82 is located between the two driven eccentric gears 81 and rotates together to mesh with the two driven eccentric gears 81. The stepper motor 83 is fixedly mounted on the top of the fixed box 151, and its output shaft rotatably passes through the fixed box 151 and is coaxially fixedly connected to the rotating shaft of the driving eccentric gear 82.

[0041] Reference Figure 4 Rubber pads 411 are fixedly provided on opposite sides of the fixed plate 41 and the movable plate 42. The function of the rubber pads 411 is to increase friction and prevent the fixture plate 3 from sliding during the clamping process, and also to protect the surface of the fixture plate 3 from being scratched.

[0042] Reference Figure 1 and Figure 5 The spot welding mechanism 5 includes a mounting base 51, a lifting bracket 52, a laser welding gun 53, and a welding rod 54. The mounting base 51 has a guide groove 511 on the side facing the placement table 6. A lead screw 512 is vertically rotatably installed in the guide groove 511. A reciprocating motor 513 is fixedly installed on the top of the mounting base 51. The output shaft of the reciprocating motor 513 rotates into the guide groove 511 and is coaxially fixedly connected with the lead screw 512. The lifting bracket 52 is threaded and rotated on the lead screw 512 and slides vertically with the guide groove 511.

[0043] Reference Figure 5 In this embodiment, two pairs of welding rods 54 and a laser welding gun 53 are used as examples. The two welding rods 54 are distributed along the length of the fixture plate 3, and the distance between the two welding rods 54 is the distance of three placement positions 31. The welding rods 54 are set vertically and are fixed to the bottom of the lifting bracket 52 by bolts. The laser welding gun 53 is set at an angle with the power on, and its gun head points to the end of the welding rod 54. Its gun body is inserted and positioned on the lifting bracket 52.

[0044] Reference Figure 1 and Figure 6A connecting plate 61, L-shaped, is fixedly installed on the side of the placement platform 6 near the slide rail 14. An adjustment assembly 9, comprising a rack 91, a drive gear 92, and a servo motor 93, is installed between the placement platform 6 and the slide rail 14. The rack 91 is fixedly installed parallel to the slide rail 14 on the side away from the limiting track 7. The drive gear 92 is rotatably mounted on the inner bottom of the connecting plate 61, and the servo motor 93 is fixedly mounted on the top of the connecting plate 61. Its output shaft rotatably passes through the connecting plate 61 and is coaxially fixedly connected to the shaft of the drive gear 92. The drive gear 92 is always engaged with the rack 91 during rotation. Ear plates 141 are fixedly installed on both ends of the slide rail 14 at the rack 91. Limit switches 142, electrically connected to the servo motor 93, are installed on opposite sides of the two ear plates 141. The two limit switches 142 correspond to the positions of the loading station 11 and the unloading station 13, respectively.

[0045] Reference Figure 1 and Figure 6 The slide rail 14 is also equipped with a proximity switch 143 that is electrically connected to the servo motor 93. One proximity switch 143 is installed on the side wall of the slide rail 14 at the welding station 12. When the placement table 6 slides to the welding station 12, the connecting plate 61 moves to trigger the proximity switch 143, and the proximity switch 143 sends an electrical signal to stop the servo motor 93 from running.

[0046] Reference Figure 1 , Figure 2 and Figure 6 To improve the stability of the jig plate 3 conveyed by the placement platform 6, a positioning element 62 is provided on the placement platform 6. Vertically positioned slots 33 are opened at both ends of the jig plate 3. In this embodiment, the positioning element 62 consists of multiple correction positioning balls fixedly mounted on the placement platform 6. Each correction positioning ball corresponds one-to-one with a positioning slot 33 on the jig plate 3 and is inserted into the slot. The correction positioning balls are made of metal with a smooth surface, effectively reducing friction. Furthermore, the spherical guide surface of the correction positioning balls allows the jig plate 3 to automatically correct positional deviations during its descent, ensuring the jig plate 3 is stably placed on the placement platform 6.

[0047] Reference Figure 1 and Figure 7 In order to observe the spot welding situation in real time, the side wall fixing cover of the lifting bracket 52 is equipped with a protective plate 521. Inside the protective plate 521, a camera 5211 is installed above each welding rod 54. The camera 5211 records the welding process between the laser welding gun 53, the welding rod 54, and the speaker bracket 01 and lead wire 02 on the fixture plate 3 in real time, so as to replace the consumed welding rod 54 in time.

[0048] The implementation principle of a fully automatic loudspeaker welding device according to an embodiment of this application is as follows: The fixture plate 3 carrying the loudspeaker bracket 01 and lead wire 02 is placed on the conveyor belt 2 and accurately transferred to the loading station 11 under the guidance of the limiting track 7. After the mechanical gripper 4 at the loading station 11 descends, it accurately inserts into the limiting track 7, firmly grips the fixture plate 3 and lifts it. Subsequently, the placement table 6 moves to the area of ​​the loading station 11 under the meshing transmission of gears and racks 91, and the mechanical gripper 4 releases the fixture plate 3, so that it is stably placed on the placement table 6 by the correction positioning ball. Then, the placement table 6 accurately delivers the fixture plate 3 to the welding station 12. The lifting bracket 52 moves down along the guide vertical groove 511 under the rotation drive of the lead screw 512 until the bottom of the welding rod 54 abuts against and aligns with the position to be welded between the loudspeaker bracket 01 and the lead wire 02. The laser welding gun 53 is energized to pulse the end of the welding rod 54, thereby realizing a stable welding operation between the loudspeaker bracket 01 and the lead wire 02. Finally, the welded fixture plate 3 is transported from the placement table 6 to the unloading station 13. The mechanical gripper 4 at the unloading station 13 grabs the fixture plate 3 and puts it back on the conveyor belt 2, thereby realizing a fully automated welding process and greatly improving production efficiency and welding quality.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automatic welding equipment for loudspeakers, characterized in that... The machine includes a spot welding machine body (1), a conveyor belt (2) mounted on the spot welding machine body (1), and a fixture plate (3) for placing a speaker bracket (01) and a lead wire (02). The conveyor belt (2) is used to transfer the fixture plate (3). The spot welding machine body (1) is provided with a limiting track (7) that fits the surface of the conveyor belt (2). The spot welding machine body (1) is provided with a loading station (11), a welding station (12), and a unloading station (13) in sequence along the conveying direction of the conveyor belt (2). Mechanical grippers that are inserted into the limiting track (7) are raised and lowered at both the loading station (11) and the unloading station (13). (4) A spot welding mechanism (5) for welding the speaker bracket (01) and lead wire (02) is raised and lowered at the welding station (12). The mechanical gripper (4) and the spot welding mechanism (5) are both located on the same side of the limiting rail (7). A slide rail (14) is provided on the side of the limiting rail (7) away from the spot welding mechanism (5). A placement table (6) is slidably provided on the slide rail (14). An adjustment component (9) for adjusting the position of the placement table (6) is provided on the spot welding machine body (1). A positioning component (62) of the positioning fixture plate (3) is also provided on the placement table (6).

2. The fully automatic loudspeaker welding equipment according to claim 1, characterized in that... The fixture plate (3) has several placement positions (31) for inserting the speaker bracket (01) and the lead wire (02) along its own length direction. The speaker bracket (01) is provided with a plug-in groove (011) to facilitate the insertion of the lead wire (02). The fixture plate (3) is provided with a pair of wire clamping posts (32) for each placement position (31). Several pairs of wire clamping posts (32) are distributed along the length direction of the fixture plate (3), and each wire clamping post (32) is fitted with a rubber sleeve (321). The two ends of the lead wire (02) pass through the notch of the plug-in groove (011) and the two ends of the lead wire (02) are crossed and clamped between the two rubber sleeves (321).

3. The fully automatic loudspeaker welding equipment according to claim 1, characterized in that... Both ends of the fixture plate (3) are provided with positioning grooves (33). The positioning element (62) is a plurality of correction positioning balls set on the placement platform (6). The correction positioning balls correspond one-to-one with the positioning grooves (33) on the fixture plate (3) and are inserted into each other.

4. The fully automatic loudspeaker welding equipment according to claim 1, characterized in that... The limiting track (7) includes two parallel guide plates (71). The feed ends of the two guide plates (71) on opposite sides are provided with guide slopes. The distance between the two guide plates (71) is adjustable. The spot welding machine body (1) is provided with a rotating motor (72). The output shaft of the rotating motor (72) is coaxially connected to a bidirectional screw (721). The bidirectional screw (721) is set perpendicular to the conveying direction of the conveyor belt (2). Each guide plate (71) has a top wall with A vertical connecting rod (711) is provided, and an adjusting block (712) is sleeved on the top of the connecting rod (711). Two adjusting blocks (712) on the side closer to the bidirectional screw (721) are respectively threaded onto the corresponding threaded section of the bidirectional screw (721). Two adjusting blocks (712) on the side away from the bidirectional screw (721) slide together through a guide rod (73). The guide rod (73) is set on the spot welding machine body (1) parallel to the bidirectional screw (721).

5. The fully automatic loudspeaker welding equipment according to claim 4, characterized in that... The limiting track (7) is provided with a stop bar (74) for intercepting the jig plate (3). The stop bar (74) is located at the loading station (11) and is set between two guide plates (71). One end of the stop bar (74) is fixed to one of the guide plates (71), and the other end slides through the opposite guide plate (71).

6. The fully automatic loudspeaker welding equipment according to claim 1, characterized in that... The spot welding machine body (1) is provided with vertical linear guide rails (15) at the loading station (11) and unloading station (13). A fixed box (151) is slidably sleeved on the linear guide rail (15). The mechanical gripper (4) includes a fixed plate (41) and a moving plate (42) arranged parallel to the limiting rail (7). The fixed plate (41) and the moving plate (42) are distributed along the length direction perpendicular to the limiting rail (7). A groove (1511) is opened at the bottom of the fixed box (151) along the direction of the moving plate (42) toward the fixed plate (41). A slider (421) is slidably arranged in the groove (1511). The slider (421) is arranged at the top of the moving plate (42), and its top extends into the fixed box (151). The slider (421) overlaps the inside of the fixed box (151). On the bottom wall, and guided and slidably engaged with the fixed box (151) along the slide groove (1511), the fixed box (151) is provided with a driving member (8) that drives the slider (421) to move back and forth. The driving member (8) includes a driven eccentric gear (81), an active eccentric gear (82) that meshes with the driven eccentric gear (81), and a stepper motor (83) that drives the active eccentric gear (82) to rotate. The driven eccentric gear (81) is rotatably disposed on the top of the slider (421), and there are two driven eccentric gears (81) guided along the slide groove (1511). The active eccentric gear (82) is located between the two driven eccentric gears (81) and meshes with the two driven eccentric gears (81) together. The output shaft of the stepper motor (83) is coaxially connected with the rotating shaft of the active eccentric gear (82).

7. The fully automatic loudspeaker welding equipment according to claim 6, characterized in that... Rubber pads (411) are provided on the opposite sides of the fixed plate (41) and the movable plate (42).

8. The fully automatic loudspeaker welding equipment according to claim 1, characterized in that... A connecting plate (61) is provided on the side of the placement platform (6) near the slide rail (14). The connecting plate (61) is L-shaped. The adjustment component (9) includes a rack (91) on the side of the slide rail (14) away from the limiting track (7), a drive gear (92) rotatably mounted on the connecting plate (61), and a servo motor (93) that drives the drive gear (92) to rotate. The rack (91) is parallel to the slide rail (14), and the drive gear (92) and the rack (91) are rotatably meshed. Ear plates (141) are provided at both ends of the rack (91) on the slide rail (14). On the opposite side of 41), there are limit switches (142) electrically connected to the servo motor (93). The two limit switches (142) correspond to the positions of the loading station (11) and the unloading station (13), respectively. The slide rail (14) is also equipped with a proximity switch (143) electrically connected to the servo motor (93). The proximity switch (143) is located on the slide rail (14) corresponding to the welding station (12). When the placement platform (6) slides to the welding station (12), the connecting plate (61) moves to trigger the proximity switch (143), and the proximity switch (143) sends an electrical signal to stop the servo motor (93) from running.

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