Automatic welding machine for flexible flywheels

Abstract

The utility model discloses an automatic welding machine of flexible flywheel, and the welding machine includes installation platform, centrally arranged rotating mechanism and two groups of symmetrical distribution in the upper and lower sides of rotating frame's clamping mechanism. Each group of clamping mechanism passes through telescopic air cylinder drive gear and rack transmission structure, drives the reverse movement of pressure equipment block and inner support board, realizes the outer pressure inner support type clamping. Two groups of clamping mechanism are arranged in the circular array, and can alternately clamp and weld operation: when the upper clamping mechanism clamps workpiece and welds, the lower clamping mechanism is in standby state, and after welding, rotates 180 DEG, and the lower clamping mechanism automatically loosens and unloads simultaneously, and the upper clamping mechanism synchronously clamps new workpiece, realizes "welding - unloading - clamping" parallel operation. The utility model greatly improves the beat efficiency through double -position cooperative design, and combines posture sensor closed loop control and photoelectric detection, ensures welding accuracy and automation reliability, and is applicable to the efficient continuous production of large quantities of flexible flywheel.

Description

Technical Field

[0001] This utility model relates to the technical field of flywheel processing, specifically to an automatic welding machine for flexible flywheels. Background Technology

[0002] In the manufacturing of precision components such as automotive clutches and motor rotors, flexible flywheels are typically assembled from a stamped disc and an external gear ring via circumferential welding. Due to their thin walls and poor rigidity, they are prone to deformation or displacement during clamping, affecting welding quality. Existing automated welding equipment mostly employs a single-station design, where one clamping mechanism completes the entire process of "loading → welding → unloading," which presents the following prominent problems: First, production efficiency is low. Single-station equipment must wait for the current workpiece to be welded and unloaded before the next workpiece can be clamped, resulting in significant idle waiting time, which makes it difficult to meet the needs of high-cycle production lines.

[0003] Secondly, the clamping stability is insufficient. Traditional clamps are mostly single external clamps or internal expansion methods, which result in uneven clamping force on thin-walled flexible flywheels, easily causing local deformation or stress concentration, leading to problems such as weld misalignment and incomplete welding.

[0004] Secondly, the level of automation integration is low. Most equipment lacks status detection and closed-loop control functions, making it impossible to confirm in real time whether the workpiece is in position or whether the rotation angle is accurate, relying on manual intervention, which affects consistency and safety.

[0005] Therefore, there is an urgent need to develop an automatic welding machine that integrates high-precision rotary positioning, stable clamping, and dual-station continuous operation to solve the problems of low efficiency, easy deformation, and low degree of automation in the existing technology, and improve the overall benefits of mass production of flexible flywheels. Utility Model Content

[0006] The purpose of this invention is to provide an automatic welding machine for flexible flywheels to solve the above-mentioned defects caused by the prior art.

[0007] An automatic welding machine for flexible flywheels, comprising: Installation platform; The rotating mechanism is centrally located above the mounting platform and includes a rotating frame and a servo motor. A pair of rotating shafts are coaxially connected to both sides of the rotating frame. The servo motor drives the rotating frame to rotate clockwise or counterclockwise around the pair of rotating shafts. Two clamping mechanisms are symmetrically distributed on the upper and lower sides of the rotating frame. Each clamping mechanism is arranged in a circular array on the rotating frame. The clamping mechanism includes a mounting box, a first mounting plate, a second mounting plate, and a telescopic cylinder. The first mounting plate and the second mounting plate are telescopically connected to the upper and lower sides of the mounting box, respectively. The outer end of the first mounting plate is provided with a pressing block, and the outer end of the second mounting plate is provided with an inner support plate. The telescopic cylinder drives the first mounting plate and the second mounting plate to extend or retract alternately through a gear and rack transmission structure, so as to realize the automatic clamping and unloading of the flexible flywheel.

[0008] Preferably, a pair of fixed frames are symmetrically connected to the left and right sides of the mounting platform. The rotating shaft is rotatably connected to the upper end of the fixed frame through a bearing seat. A pair of servo motors are respectively mounted on the fixed frames on both sides through fixed plates. The output end of the servo motor is coaxially connected to the outer end of the rotating shaft on the same side through a coupling.

[0009] Preferably, the inner end of the mounting box is provided with a mounting groove 1 and a mounting groove 2 distributed vertically. The mounting plate 1 is slidably connected in the mounting groove 1, and a rack 1 is horizontally connected to its lower side. The mounting plate 2 is slidably connected in the mounting groove 2, and a rack 2 is horizontally connected to its upper side. The center of the mounting box is rotatably connected to a mounting shaft, and a gear is fixedly connected to the mounting shaft. The gear meshes with both rack 1 and rack 2. The telescopic cylinder is horizontally installed at the bottom of the mounting box, and the end of its piston rod is fixedly connected to the inner end of the mounting plate 2.

[0010] Preferably, the mounting platform has a discharge port in the middle.

[0011] Preferably, an attitude sensor is connected to the center of the rotating frame via screws.

[0012] Preferably, the top of the mounting box is connected to a mounting cover by screws.

[0013] Preferably, the inner end of the mounting box is connected to a photoelectric switch via a mounting bracket.

[0014] Compared with the prior art, the present invention has the following advantages: 1. Significantly improves production efficiency: The symmetrical layout of the upper and lower clamping mechanisms enables "alternating operation of two workstations". When one workstation is welding, the other can simultaneously perform unloading and clamping preparation, effectively eliminating the waiting time of traditional single-workstation equipment, making the equipment utilization rate close to 100%, and improving the overall cycle efficiency by more than 50%.

[0015] 2. Stable and reliable clamping to prevent workpiece deformation: Each clamping mechanism adopts a "external pressure and internal support" coordinated clamping method - the pressure block presses the outer edge of the flywheel from the outside, and the internal support plate supports the inner edge of the flywheel from the inside, forming a uniform enveloping force, which effectively suppresses the elastic deformation and displacement of the thin-walled flexible flywheel during clamping and rotation, ensuring welding coaxiality and weld quality.

[0016] 3. High degree of automation and safe and reliable operation: The mechanical interlock between the pressing block and the inner support plate is achieved through the linkage structure of the telescopic cylinder and the gear rack, which avoids interference between the actions; in conjunction with the photoelectric switch to detect the workpiece in real time, the welding is started only after the workpiece is clamped in place, which improves the intelligence and safety of the system.

[0017] In summary, this utility model, through its integrated design of "alternating dual-station operation + external pressure and internal support clamping + closed-loop precise control," solves the problems of low efficiency, easy deformation, and insufficient automation in flexible flywheel welding, and has good prospects for industrial application. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall front view of this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the rotating mechanism.

[0021] Figure 4 This is a first-person view structural diagram of the clamping mechanism.

[0022] Figure 5 This is a structural schematic diagram of the clamping mechanism from a second-view perspective.

[0023] Figure 6 This is a structural schematic diagram of the clamping mechanism from a third-person perspective.

[0024] Figure 7 This is a schematic diagram of the overall three-dimensional structure of the flexible flywheel.

[0025] in: 10- Mounting platform; 10a- Unloading port; 20-Rotating mechanism; 201-Fixed frame; 202-Bearing housing; 203-Rotating shaft; 204-Rotating frame; 205-Attitude sensor; 206-Fixed plate; 207-Servo motor; 208-Coupling; 30-Clamping mechanism; 301-Mounting box; 301a-Mounting slot one; 301b-Mounting slot two; 302-Mounting plate one; 303-Pressure block; 304-Rack one; 305-Mounting plate two; 306-Inner support plate; 307-Rack two; 308-Mounting shaft; 309-Gear; 310-Telescopic cylinder; 311-Mounting cover; 312-Mounting bracket; 313-Photoelectric switch; 40 - Flexible flywheel; 401 - Stamping disc; 402 - External gear ring. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figures 1 to 7 As shown, an automatic welding machine for flexible flywheels includes: Mounting platform 10; The rotating mechanism 20 is centrally located above the mounting platform 10 and includes a rotating frame 204 and a servo motor 207. A pair of rotating shafts 203 are coaxially connected to both sides of the rotating frame 204. The servo motor 207 drives the rotating frame 204 to rotate clockwise or counterclockwise around the pair of rotating shafts 203. Two clamping mechanisms 30 are symmetrically distributed on the upper and lower sides of the rotating frame 204. Each clamping mechanism is arranged in a circular array on the rotating frame 204. Each clamping mechanism 30 includes a mounting box 301, a first mounting plate 302, a second mounting plate 305, and a telescopic cylinder 310. The first mounting plate 302 and the second mounting plate 305 are telescopically connected to the upper and lower sides of the mounting box 301, respectively. The outer end of the first mounting plate 302 is provided with a pressing block 303, which is used to press the outer edge of the flexible flywheel 40 from the outside. The outer end of the second mounting plate 305 is provided with an inner support plate 306, which is used to support the inner edge of the flexible flywheel 40 from the inside. The telescopic cylinder 310 drives the first mounting plate 302 and the second mounting plate 305 to extend or retract alternately through a gear and rack transmission structure, thereby realizing the automatic clamping and unloading of the flexible flywheel 40. This invention adopts an integrated structure of "rotation + symmetrical clamping". The rotation angle is precisely controlled by the servo motor 207 to ensure the continuity and consistency of the welding trajectory. The clamping mechanism 30 adopts a symmetrical, circumferential array layout. Both the upper and lower clamping mechanisms 30 can be used to clamp the flexible flywheel 40, improving production efficiency. The pressure block 303 and the inner support plate 306 work together to achieve external pressure and internal support clamping, effectively preventing the thin-walled flexible flywheel 40 from deforming or shifting during clamping, and ensuring welding accuracy.

[0028] In this embodiment, a pair of fixed frames 201 are symmetrically connected to the left and right sides of the mounting platform 10. The rotating shaft 203 is rotatably connected to the upper end of the fixed frame 201 through the bearing seat 202. A pair of servo motors 207 are respectively mounted on the fixed frames 201 on both sides through the fixing plate 206. The output end of the servo motor 207 is coaxially connected to the outer end of the rotating shaft 203 on the same side through the coupling 208. The fixed frame and the bearing seat form a stable support frame, ensuring that the rotating shaft runs smoothly under high speed or high load and reducing vibration. The dual-sided independent servo drive is connected with the coupling to improve transmission accuracy and synchronization, avoiding the problem of uneven torque caused by single-sided drive. The overall structure has high rigidity, which is beneficial to the stability of the equipment and the consistency of welding quality under long-term continuous operation.

[0029] In this embodiment, the inner end of the mounting box 301 is provided with mounting groove 1 301a and mounting groove 2 301b distributed vertically. Mounting plate 1 302 is slidably connected in mounting groove 1 301a, and rack 1 304 is horizontally connected to its lower side. Mounting plate 2 305 is slidably connected in mounting groove 2 301b, and rack 2 307 is horizontally connected to its upper side. Mounting shaft 308 is rotatably connected to the center of the mounting box 301. Gear 309 is fixedly connected to mounting shaft 308. Gear 309 meshes with both rack 1 304 and rack 2 307. Telescopic cylinder 310 is horizontally mounted at the bottom of mounting box 301, and the end of its piston rod is fixedly connected to the inner end of mounting plate 2 305. A gear and rack linkage transmission structure is adopted. When the telescopic cylinder pushes mounting plate 2 outward, rack 2 drives the central gear to rotate, thereby driving rack 1 to move in the opposite direction, causing mounting plate 1 to retract synchronously; and vice versa. This design implements a mechanical interlock mechanism of "one action, two controls" to ensure that the pressing block and the inner support plate are always in opposite motion states, avoiding interference and ensuring the safety, reliability and automation of the clamping and unloading process.

[0030] In this embodiment, the mounting platform 10 is provided with a discharge port 10a in the middle. The discharge port 10a facilitates the free fall of the workpiece from below after welding or its capture by a conveying device, which is especially suitable for automated production line integration. This avoids manual intervention in part removal and improves work efficiency.

[0031] In this embodiment, an attitude sensor 205 is connected to the center of the rotating frame 204 via screws. The attitude sensor 205 monitors the angular position and motion state of the rotating frame 204 in real time and feeds back signals to the control system to achieve closed-loop precise positioning. This effectively corrects the cumulative errors that may exist in the servo motor 207, ensuring accurate stopping position for each rotation, meeting the high-precision requirements of multi-weld indexing welding, and improving product consistency and yield.

[0032] In this embodiment, a mounting cover 311 is screwed to the top of the mounting box 301. The mounting cover 311 is used to seal the internal structure of the mounting box, preventing welding spatter, dust, oil, etc. from entering the gear and rack transmission system, protecting the core moving parts, and extending service life. At the same time, it facilitates disassembly and maintenance, taking into account both sealing and maintainability, and improving the long-term reliability of the equipment.

[0033] In this embodiment, a photoelectric switch 313 is connected to the inner end of the mounting box 301 via a mounting bracket 312. The photoelectric switch 313 is used to detect whether a flexible flywheel 40 exists between the pressing block 303 and the inner support plate 306.

[0034] The working process of an automatic welding machine with a flexible flywheel: S1. Mounting at the upper station, standby at the lower station. The telescopic cylinder of the upper assembly clamping mechanism extends, driving the inner support plate to expand outward and the pressing block to converge inward via gear and rack transmission. This clamps the flexible flywheel composed of the stamping disc to be welded and the outer gear ring, achieving stable clamping with outer edge pressing and inner edge support. At this time, the lower assembly clamping mechanism remains in the released state, ready to receive instructions for the next process.

[0035] S2. Perform welding A servo motor drives the rotating frame to rotate at a constant speed, which in turn drives the clamped flexible flywheel into the welding station. External welding equipment (such as a laser welding gun or TIG welding gun) completes the circumferential welding along a preset trajectory.

[0036] S3. Rotary switching station After welding is completed, the servo motor drives the rotating frame to rotate precisely 180°, so that the welded workpiece is rotated to the lower position along with the upper assembly clamping mechanism, and at the same time, the empty clamping mechanism that was originally located at the lower position is rotated to the upper welding position.

[0037] S4. Synchronous unloading and clamping Lower station unloading: Control the retractable cylinder of the original upper assembly clamping mechanism (now located below) to retract, drive the inner support plate to gather inward and the pressing block to expand outward, automatically release the welded workpiece, and the workpiece falls freely through the unloading port in the middle of the mounting platform or is picked up by the conveying device.

[0038] Upper workstation clamping: At the same time, control the telescopic cylinder of the original lower assembly clamping mechanism (now located above) to clamp the new workpiece to be welded.

[0039] S5. Cyclic Operation Repeat steps S2 to S4 to achieve a continuous cycle of "welding - flipping - unloading / clamping". Throughout the process, the three processes of clamping, welding and unloading are carried out in parallel and alternately between the two workstations, with no waiting gaps, which greatly improves the equipment utilization rate and production cycle.

[0040] Therefore, the above-disclosed embodiments are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. An automatic welding machine for a flexible flywheel, characterized in that, include: Mounting station (10); The rotating mechanism (20) is centrally located above the mounting platform (10) and includes a rotating frame (204) and a servo motor (207). A pair of rotating shafts (203) are coaxially connected on both sides of the rotating frame (204). The servo motor (207) drives the rotating frame (204) to rotate clockwise or counterclockwise around the pair of rotating shafts (203). Two clamping mechanisms (30) are symmetrically distributed on the upper and lower sides of the rotating frame (204). Each clamping mechanism is arranged in a circular array on the rotating frame (204). The clamping mechanism (30) includes a mounting box (301), mounting plate one (302), mounting plate two (305), and telescopic cylinder (310). Mounting plate one (302) and mounting plate two (305) are telescopically connected to the upper and lower sides of the mounting box (301), respectively. The outer end of mounting plate one (302) is provided with a pressing block (303), and the outer end of mounting plate two (305) is provided with an inner support plate (306). The telescopic cylinder (310) drives mounting plate one (302) and mounting plate two (305) to extend or retract alternately through a gear and rack transmission structure to realize the automatic clamping and unloading of the flexible flywheel (40).

2. The automatic welding machine for a flexible flywheel according to claim 1, characterized in that, A pair of fixed frames (201) are symmetrically connected on the left and right sides of the mounting platform (10). The rotating shaft (203) is rotatably connected to the upper end of the fixed frame (201) through the bearing seat (202). A pair of servo motors (207) are respectively installed on the fixed frames (201) on both sides through the fixing plate (206). The output end of the servo motor (207) is coaxially connected to the outer end of the rotating shaft (203) on the same side through the coupling (208).

3. An automatic welding machine for flexible flywheels as claimed in claim 1, characterized in that, The inner end of the mounting box (301) is provided with mounting groove 1 (301a) and mounting groove 2 (301b) distributed vertically. Mounting plate 1 (302) is slidably connected in mounting groove 1 (301a), and rack 1 (304) is horizontally connected to its lower side. Mounting plate 2 (305) is slidably connected in mounting groove 2 (301b), and rack 2 (307) is horizontally connected to its upper side. Mounting shaft (308) is rotatably connected to the center of the mounting box (301). Gear (309) is fixedly connected to the mounting shaft (308). Gear (309) meshes with rack 1 (304) and rack 2 (307) at the same time. Telescopic cylinder (310) is horizontally installed at the bottom of mounting box (301), and the end of its piston rod is fixedly connected to the inner end of mounting plate 2 (305).

4. An automatic welding machine for a flexible flywheel according to claim 1, characterized in that, The mounting platform (10) is provided with a discharge port (10a) in the middle.

5. An automatic welding machine for a flexible flywheel according to claim 1, characterized in that, An attitude sensor (205) is connected to the center of the rotating frame (204) by a screw.

6. An automatic welding machine for a flexible flywheel according to claim 1, characterized in that, The top of the mounting box (301) is connected to the mounting cover (311) by screws.

7. An automatic welding machine for a flexible flywheel according to claim 1, characterized in that, The inner end of the mounting box (301) is connected to a photoelectric switch (313) via a mounting bracket (312).

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