Motorcycle starting lever welding machine

Abstract

The invention relates to the technical field of starting lever welding, and discloses a motorcycle starting lever welding machine which comprises a bottom plate, a feeding frame is arranged at one end of the bottom plate, a pedal rod to be welded is placed on the feeding frame, a fixing disc is arranged in the middle of the bottom plate, the pedal rod penetrates through the center of the fixing disc, and the motorcycle starting lever welding machine further comprises a shaft head feeding mechanism and a rotary welding mechanism. The rotary welding mechanism comprises arc-shaped guide grooves symmetrically formed in the two sides of the fixing disc, the arc-shaped guide grooves are slidably connected with sliding blocks, and welding heads are slidably arranged on the sliding blocks in the direction facing the center of the fixing disc. The rotary welding mechanism and the linkage driving assembly are cooperatively matched, and the linkage driving assembly is used for driving the sliding block to slide along the arc-shaped guide groove, so that the welding head does precise circular motion around the center of the fixed disc; and meanwhile, through linkage control of the pressure applying assembly and the arc-shaped pressing arm, it is ensured that the welding head is tightly attached to the end of the pedal rod in the whole welding process, and automatic welding of full-circle fillet welds at the joint of the pedal rod and the starting rod shaft head is achieved.

Description

Technical Field

[0001] This invention relates to the field of starter rod welding technology, specifically a motorcycle starter rod welding machine. Background Technology

[0002] In motorcycle manufacturing, the starter lever, as a key control component, typically consists of a semi-circular starter lever axle and a rod-shaped pedal lever. Because the pedal lever needs to be bent at a specific angle according to the overall vehicle layout and ergonomic requirements, this component cannot be formed using a one-piece casting process. Current manufacturing processes usually involve first bending a long, straight rod to form a pedal lever of a specific shape, and then welding its end to the starter lever axle to achieve a reliable connection.

[0003] In traditional rod welding processes, resistance welding is often used to directly weld two components together to improve production efficiency. However, due to the arc-shaped outer surface of the starter rod shaft, the contact interface formed when the end of the pedal handle contacts its side is small, resulting in insufficient resistance heat input in the welding area and difficulty in forming a weld joint with sufficient penetration and bonding strength. Therefore, in actual production, it is often necessary for operators to manually arc weld or gas shielded weld along the junction of the shaft's arc surface and the pedal handle end using a handheld welding torch. This welding method not only requires high welding skills but also makes the welding quality susceptible to human factors, exhibiting significant instability and poor consistency. Therefore, it is necessary to design a dedicated welding device specifically for the structural characteristics of the starter rod to achieve efficient and stable welding of such components. Summary of the Invention

[0004] This invention provides a motorcycle starter rod welding machine, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A motorcycle starter rod welding machine includes a base plate, a feeding rack at one end of the base plate, on which a foot pedal rod to be welded is placed, a fixing plate in the middle of the base plate, and the foot pedal rod passing through the center of the fixing plate. It also includes a shaft head feeding mechanism and a rotary welding mechanism. The shaft head feeding mechanism is located on the side of the base plate away from the loading rack. It is used to supply the starter rod shaft head to the welding station and to make the starter rod shaft head at the bottom level at the same height as the end of the foot pedal rod. The rotary welding mechanism includes arc-shaped guide grooves symmetrically opened on both sides of the fixed plate, the arc-shaped guide grooves are slidably connected to the slider, and the upper edge of the slider is slidably provided with a welding head in the direction towards the center of the fixed plate; As the slider slides from one end of the arc-shaped guide groove to the other end, the welding head makes a circular motion around the center of the fixed plate.

[0006] As a preferred embodiment of the present invention, a pressure-applying component is provided on the outer side of the fixed plate. The pressure-applying component drives the welding head to move toward the center of the fixed plate until a preset welding distance is formed between it and the foot pedal. A linkage drive component is provided between the fixed plate and the base plate. The linkage drive component simultaneously drives the slider to slide along the arc-shaped guide groove and drives the pressure-applying component to move.

[0007] As a preferred embodiment of the present invention, the pressure application component includes a limiting ring fixed at one end of the welding head away from the center of the fixed plate, a return spring between the limiting ring and the slider, the return spring driving the welding head away from the center of the fixed plate, rotating seats rotatably connected to both sides of the fixed plate, the rotating seats rotatably connected to the ends of the arc-shaped pressure arms, the arc-shaped pressure arms having an arc-shaped structure, and bent ends fixedly connected to one end of each of the two arc-shaped pressure arms near the rotating seats, with a push-opening spring provided between the two bent ends.

[0008] As a preferred embodiment of the present invention, the linkage drive assembly includes a guide column fixed between the fixed plate and the base plate, a lifting seat slidably connected to the middle of the guide column, extension frames on both sides of the lifting seat, one end of a traction rod rotatably connected to the end of the two extension frames, the other end of the traction rod rotatably connected to the side of the slider, and a lifting screw rotatably connected to the base plate for driving the lifting seat to move along the guide column.

[0009] As a preferred embodiment of the present invention, the end of the lifting seat is provided with a linkage fork. The linkage fork has a U-shaped structure, and its open end cooperates with the bent end. When the lifting seat rises, the linkage fork moves the bent end, overcoming the elastic force of the opening spring and causing the ends of the two arc-shaped pressure arms away from the rotating seat to open. When the lifting seat descends, the linkage fork disengages from the bent end, and the opening spring pushes the ends of the two arc-shaped pressure arms away from the rotating seat to close. At this time, the center of the two arc-shaped pressure arms coincides with the center of the fixed plate and applies pressure to the welding head.

[0010] As a preferred embodiment of the present invention, the shaft head feeding mechanism includes a column fixedly connected to the base plate, a support plate provided on the side of the column near the fixed plate, and a shaft head hopper provided on the top of the column for vertically stacking and storing multiple starter rod shaft heads, with the bottom starter rod shaft head resting on the support plate.

[0011] As a preferred embodiment of the present invention, the support plate is rotatably connected to the column, and a spring seat is provided on the opposite side of the support plate and the column. The two spring seats are respectively connected to the two ends of the support spring. When the support spring is in its natural state, the top surface of the support plate is flush with the top surface of the feeding rack.

[0012] As a preferred embodiment of the present invention, the shaft head hopper includes a back plate fixedly connected to the column, and a plurality of C-shaped side frames are evenly distributed on the back plate. The openings of the side frames face the fixed plate, and a lateral positioning vertical rod is provided on the inner wall of the side frame. The lateral positioning vertical rod abuts against the outer wall of the starting rod shaft head. A central positioning vertical rod is provided in the middle of the back plate and passes through the central hole of the starting rod shaft head.

[0013] The present invention has the following advantages: First, this invention achieves automated welding of the full-circumference fillet weld at the junction of the foot pedal and the starter rod shaft through the coordinated operation of the rotary welding mechanism and the linkage drive assembly. The welding head moves in a circular motion along the arc-shaped guide groove, replacing traditional manual operation, eliminating the influence of human factors on welding quality, and significantly improving welding efficiency and product consistency.

[0014] Secondly, this invention incorporates an arc-shaped pressure arm mechanism designed to match the arc-shaped surface of the starting rod shaft. When closed, its center coincides with the center of the fixed plate, applying uniform and stable radial pressure to the welding head. This effectively solves the problem of insufficient penetration in conventional resistance welding due to the small contact area, ensuring sufficient bonding strength in the welded joint.

[0015] Third, this invention achieves timing control of the welding head's feed and reset through the coordination of the linkage fork and the bending end. It automatically applies pressure during welding and automatically retracts during reset, requiring no additional power source. The structure is compact and reliable, while also providing ample operating space for workpiece clamping and removal.

[0016] Fourth, this invention employs a feeding structure combining a vertical shaft head hopper with a central positioning vertical rod, utilizing gravity to achieve continuous feeding and precise positioning of the starting rod shaft head. The support plate can adaptively rotate with the material handling action, reducing extraction resistance, facilitating operation, effectively reducing auxiliary time, and improving overall machine production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a motorcycle starter rod welding machine.

[0019] Figure 2 This is a front view of a motorcycle starter rod welding machine.

[0020] Figure 3This is a schematic diagram of the rotating welding mechanism in a motorcycle starter rod welding machine.

[0021] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0022] Figure 5 for Figure 3 A magnified view of part B in the diagram.

[0023] Figure 6 This is a schematic diagram of the linkage drive assembly in a motorcycle starter rod welding machine.

[0024] Figure 7 This is a schematic diagram of the structure of an arc-shaped pressure arm pressing against the welding head in a motorcycle starter rod welding machine.

[0025] Figure 8 This is a schematic diagram of the material feeding mechanism for the axle head of a motorcycle starter rod welding machine.

[0026] Figure 9 This is a schematic diagram of the structure of a motorcycle starter rod welding machine after the starter rod shaft head is removed from the shaft head hopper.

[0027] Figure 10 This is a schematic diagram of the welding head in a motorcycle starter rod welding machine during welding.

[0028] Figure 11 This is a schematic diagram of the structure of a motorcycle starter rod welding machine after the pedal lever is raised.

[0029] In the diagram: 1. Base plate; 2. Feeding rack; 3. Fixed plate; 4. Foot pedal; 5. Starter rod shaft head; 6. Shaft head feeding mechanism; 7. Rotary welding mechanism; 8. Arc-shaped guide groove; 9. Slider; 10. Welding head; 11. Pressure application component; 12. Linkage drive component; 13. Discharge notch; 14. Arc-shaped pressure arm; 15. Return spring; 16. Limit ring; 17. Top head; 18. Bending end; 19. Rotary seat; 20. Opening spring; 21. Lifting seat; 22. Lifting screw; 23. Linkage fork; 24. Guide column; 25. Extension frame; 26. Pull rod; 27. Column; 28. Support plate; 29. ​​Spring seat; 30. Supporting spring; 31. Back plate; 32. Side frame; 33. Lateral positioning vertical rod; 34. Center positioning vertical rod; 35. Shaft head hopper. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In one embodiment, see Figure 1 , Figure 2 and Figure 3 A motorcycle starter rod welding machine includes a base plate 1. To facilitate the installation of subsequent components and ensure the overall structural stability, the base plate 1 is preferably designed as a cross-shaped structure in this embodiment. A feeding rack 2 is fixedly installed on the left side of the upper surface of the base plate 1. The feeding rack 2 has an L-shaped structure, with its vertical section fixed to the base plate 1 and its horizontal section extending to the right to form a bearing plane for placing the pedal rod 4. The pedal rod 4 is usually bent before welding. To clearly show the positional relationship of each component, only the straight front part of the pedal rod 4 is shown in the attached drawings; the bent rear part is not shown. A fixing plate 3 is provided in the middle of the base plate 1, with a through hole in the center of the fixing plate 3 through which the pedal rod 4 can pass. When the pedal rod 4 is placed on the feeding rack 2, its front end passes through the through hole in the center of the fixing plate 3. To facilitate the loading and unloading of the pedal rod 4, a feeding notch 13 communicating with the central through hole is provided at the upper end of the fixing plate 3. The fixed plate 3 is vertically arranged, and its front and rear sides are fixedly connected to the front and rear ends of the base plate 1 by obliquely arranged support rods, thereby ensuring the stability of the fixed plate 3 installation. It also includes a shaft head feeding mechanism 6 and a rotary welding mechanism 7.

[0032] The shaft head feeding mechanism 6 is located at the right end of the base plate 1 and is used to store and supply the starter rod shaft head 5. Multiple starter rod shaft heads 5 are stacked vertically in the shaft head feeding mechanism 6. The starter rod shaft head 5 at the bottom is at the same height as the foot pedal 4 placed on the loading rack 2, so that the right end of the foot pedal 4 can accurately abut against the arc-shaped side of the starter rod shaft head 5, preparing for subsequent welding.

[0033] The rotary welding mechanism 7 includes symmetrically arranged arc-shaped guide grooves 8 on the front and rear sides of the fixed disk 3. A slider 9 is slidably connected within each arc-shaped guide groove 8, and the slider 9 can reciprocate downwards along the arc-shaped guide groove 8. A welding head 10 is slidably connected to the right side of the slider 9, and the welding head 10 can move towards the center of the fixed disk 3. During welding, the welding head 10 slides a preset distance towards the center of the fixed disk 3, ensuring that the distance between the welding head 10 and the end of the foot pedal 4 meets the welding process requirements. After welding, the welding head 10 reverses and resets to avoid the foot pedal 4, leaving operating space for the next clamping. To optimize the welding trajectory and avoid interference with the starter rod shaft 5 and the shaft feeding mechanism 6, the end of the welding head 10 facing the center of the fixed disk 3 is preferably configured to tilt to the right. When the slider 9 slides downwards along the arc-shaped guide groove 8, the welding head 10 performs a circular motion relative to the center of the fixed disk 3, thereby welding the joint between the end of the foot pedal 4 and the side of the starter rod shaft 5 along the arc-shaped trajectory. The two welding heads work synchronously, and the arc-shaped welding trajectory formed by the two together covers the complete circumferential weld.

[0034] In one instance of this embodiment, please refer to Figures 3-7 A pressure-applying component 11 is provided on the outer left side of the fixed plate 3. This component 11 applies a compressive force to the welding head 10 towards the center of the fixed plate 3, ensuring that a preset welding distance is maintained between the welding head 10 and the end of the foot pedal 4 during the welding process. A linkage drive component 12 is provided between the fixed plate 3 and the base plate 1. This component 12 drives the slider 9 to slide up and down along the arc-shaped guide groove 8, providing power for the circumferential movement of the welding head 10. It also controls the working state of the pressure-applying component 11. Specifically, when the slider 9 is in a high position, the linkage drive component 12 abuts against the pressure-applying component 11, causing the welding head 10 to move away from the center of the fixed plate 3, maintaining a large distance between the welding heads 10 to facilitate the clamping of the foot pedal 4. When the slider 9 moves downward and the welding head 10 needs to perform circumferential welding, the linkage drive component 12 disengages from the pressure-applying component 11, and the pressure-applying component 11 then pushes the welding head 10 towards the center of the fixed plate 3, making it fit tightly against the foot pedal 4.

[0035] The pressure application assembly 11 includes a limiting ring 16 fixedly connected to the end of the welding head 10 away from the center of the fixed disk 3. A return spring 15 is provided between the limiting ring 16 and the slider 9. The return spring 15 is sleeved on the outside of the welding head 10 and always has the tendency to drive the welding head 10 to return to its original position away from the center of the fixed disk 3. Rotary seats 19 are respectively provided on the left and right sides of the lower part of the fixed disk 3, and the rotating seats 19 are rotatably connected to the fixed disk 3. The lower end of an arc-shaped pressure arm 14 is rotatably connected to each rotating seat 19. The arc-shaped pressure arm 14 has an arc-shaped structure, and its corresponding central angle is larger than the central angle corresponding to the arc-shaped guide groove 8. A bent end 18 is fixedly connected to the lower end of the arc-shaped pressure arm 14, and a push-opening spring 20 is provided between the two bent ends 18. The push-opening spring 20 applies an elastic force to push the two bent ends 18 away from each other, thereby pushing the upper ends of the two arc-shaped pressure arms 14 together. The rotating base 19 has an internal angle limiting structure (a conventional structure, not shown in the attached diagram). When the opening spring 20 pushes the bent end 18 to its limit position, the two arc-shaped pressure arms 14 are in a vertical state, and at this time, the center of the arc-shaped pressure arms 14 coincides with the center of the fixed plate 3. The welding head 10 has a top head 17 at the end away from the center of the fixed plate 3. The outer surface of the top head 17 is an arc-shaped surface. When the upper end of the arc-shaped pressure arm 14 presses against the top head 17, it pushes the welding head 10 to move closer to the center of the fixed plate 3.

[0036] The linkage drive assembly 12 includes a guide post 24 disposed between the fixed plate 3 and the base plate 1. Specifically, a fixed plate is fixedly disposed on the lower left side of the fixed plate 3, and the fixed plate is fixedly connected to the upper end of the guide post 24. The lower end of the guide post 24 is fixedly connected to the base plate 1. A lifting seat 21 arranged in a left-right direction is slidably connected to the middle of the guide post 24. The lower ends of the extension frame 25 are fixedly connected to the front and rear sides of the left end of the lifting seat 21, respectively. The upper end of the extension frame 25 extends away from the center of the fixed plate 3. The lower end of the pull rod 26 is rotatably connected to the upper end of the extension frame 25, and the upper end of the pull rod 26 is rotatably connected to the left side of the slider 9. When the lifting seat 21 moves downward, the extension frame 25 pulls the slider 9 downward through the pull rod 26; when the lifting seat 21 moves upward, the extension frame 25 pushes the slider 9 upward through the pull rod 26, thereby realizing the reciprocating motion of the slider 9 along the arc-shaped guide groove 8. The lower end of the fixed plate 3 is rotatably connected to the upper end of the lifting screw 22. The middle part of the lifting screw 22 is threadedly connected to the middle part of the lifting seat 21, and the lower end of the lifting screw 22 is rotatably connected to the base plate 1. By rotating the lifting screw 22, the lifting seat 21 can be driven to move up and down along the guide column 24. As a preferred embodiment, a drive motor (a conventional component, not shown in the attached drawings) can be installed on the base plate 1 to drive the lifting screw 22 to rotate via a belt transmission mechanism.

[0037] The right end of the lifting seat 21 is provided with a linkage fork 23 extending in the front-to-back direction. The linkage fork 23 is a U-shaped structure with its opening facing upwards, and its upper opening is in a guide shape that expands outwards. When the lifting seat 21 moves upwards, the linkage fork 23 contacts the bent end 18, and pushes the two bent ends 18 closer together through the guide slopes at its front and rear ends, thereby opening the upper ends of the two arc-shaped pressure arms 14, and the welding head 10 moves away from the center of the fixed plate 3 under the action of the return spring 15. When the lifting seat 21 moves downwards, the linkage fork 23 disengages from the bent end 18, and under the action of the push-opening spring 20, the upper ends of the two arc-shaped pressure arms 14 move closer together, pressing the welding head 10 back towards the center of the fixed plate 3, entering the welding preparation state.

[0038] In one instance of this embodiment, please refer to Figures 8-11 The shaft feeding mechanism 6 includes a vertical column 27 mounted on the right end of the base plate 1. The column 27 has an L-shaped structure, with a flat plate extending to the left at its upper end. A support plate 28 is rotatably connected to the left side of the upper end of the column 27. Spring seats 29 are respectively provided on the lower surface of the support plate 28 and the left side of the upper end of the column 27, and a support spring 30 is connected between the two spring seats 29. When the support spring 30 is in its natural state, the support plate 28 remains horizontal, and its upper surface is flush with the top of the column 27 and the upper surface of the feeding rack 2, thereby keeping the starting rod shaft 5 and the foot pedal 4 at the same height, meeting the welding positioning requirements.

[0039] The shaft head feeding mechanism 6 also includes a shaft head hopper 35 located at the top of the column 27. Multiple starting rod shaft heads 5 are vertically stacked in the shaft head hopper 35 and fall automatically under gravity to achieve continuous feeding, with the lowest starting rod shaft head 5 landing precisely on the support plate 28. The shaft head hopper 35 includes a back plate 31 fixedly connected to the right side of the column 27, and the back plate 31 is vertically arranged. Multiple horizontally arranged side frames 32 are evenly distributed from top to bottom on the right side of the back plate 31. The side frames 32 are C-shaped structures with openings to the left. Each side frame 32 has four lateral positioning vertical rods 33 on its front and rear inner walls. The sides of the lateral positioning vertical rods 33 abut against the outer peripheral surface of the starting rod shaft head 5, and the distance between two corresponding lateral positioning vertical rods 33 is less than the diameter of the starting rod shaft head 5, thereby limiting the starting rod shaft head 5 in the front-rear direction and preventing it from shaking. A central positioning rod 34 is vertically installed on the left side of the back plate 31, passing through the central hole of the starting rod shaft head 5. The central positioning rod 34 prevents the starting rod shaft head 5 from rotating. During loading, the operator simply places the starting rod shaft head 5 onto the central positioning rod 34 from top to bottom, and the starting rod shaft head 5 will automatically slide down the central positioning rod 34 to the support plate 28 under gravity, achieving rapid positioning. The lower end of the lateral positioning rod 33 is higher than the upper surface of the lowermost starting rod shaft head 5, so that the lowermost starting rod shaft head 5 can be pulled out to the left after welding.

[0040] This embodiment includes the following steps during implementation: 1. Initial state: When the equipment is in standby mode, the lifting seat 21 is in a high position. At this time, the slider 9 is located at the upper end of the arc-shaped guide groove 8, the linkage fork 23 abuts against the bent end 18, the upper end of the arc-shaped pressure arm 14 opens, and the welding head 10 is away from the center of the fixed plate 3.

[0041] 2. Loading and Positioning: The operator places the starter rod shaft head 5 with its opening facing right (i.e., the welding surface facing left) onto the central positioning vertical rod 34. The starter rod shaft head 5 falls onto the support plate 28 under gravity. The foot pedal 4, with its welding end facing right, is inserted from top to bottom through the material feeding notch 13 into the through hole of the fixed plate 3, placed on the upper surface of the loading rack 2, and pushed to the right until the right end of the foot pedal 4 abuts against the side of the bottom starter rod shaft head 5.

[0042] 3. Circumferential Welding: The drive motor is started, causing the lifting screw 22 to rotate. The lifting screw 22 drives the lifting seat 21 to move downward. First, the linkage fork 23 disengages from the bent end 18, and the push spring 20 drives the upper ends of the arc-shaped pressure arms 14 to move closer together, pushing the welding head 10 towards the center of the fixed plate 3, so that the welding head 10 and the foot pedal 4 reach the preset welding distance, and the welding head 10 starts welding. At the same time, the lifting seat 21 pulls the slider 9 downward along the arc-shaped guide groove 8 through the pull rod 26. The welding head 10 maintains contact with the foot pedal 4 and makes a downward circular motion around the center of the fixed plate 3, welding the joint between the end of the foot pedal 4 and the side of the starting rod shaft head 5. When the slider 9 moves to the lower end of the arc-shaped guide groove 8, the welding is completed, and the welding head 10 stops working.

[0043] 4. Reset: The lifting screw 22 reverses, driving the lifting seat 21 to move upward. The slider 9 slides upward along the arc-shaped guide groove 8 and resets under the push of the pull rod 26. When the linkage fork 23 rises to contact the bent end 18, it pushes the two bent ends 18 closer to each other, the upper end of the arc-shaped pressure arm 14 opens, and the welding head 10 moves away from the center of the fixed plate 3 under the action of the reset spring 15, disengaging from the welding position.

[0044] 5. Material Removal: The operator slightly pulls the welded foot pedal 4 to the left, causing the starter rod axle 5, which is fixedly connected to it, to move to the left. When the center of the starter rod axle 5 moves to be flush with the left lateral positioning vertical rod 33, the foot pedal 4 is lifted upwards, causing the starter rod axle 5 to tilt. As the upper end of the starter rod axle 5 abuts against the lateral positioning vertical rod 33, its right end will press down on the support plate 28, causing the support plate 28 to rotate downwards against the elastic force of the support spring 30. At this time, the contact area between the bottom surface of the lowest starter rod axle 5 and the support plate 28 decreases, and the contact area between its upper surface and the adjacent starter rod axle 5 above it also decreases. The operator can easily pull out the foot pedal 4 along with the welded starter rod axle 5. Subsequently, the support plate 28 returns to horizontal under the action of the support spring 30, and the upper starter rod axle 5 automatically falls onto the support plate 28 under gravity, waiting for the next welding.

[0045] This invention provides a motorcycle starter rod welding machine. Through the coordinated operation of a rotary welding mechanism 7 and a linkage drive assembly 12, the linkage drive assembly 12 drives a slider 9 to slide along an arc-shaped guide groove 8, causing the welding head 10 to make precise circular motion around the center of a fixed disk 3. Simultaneously, through the linkage control of a pressure application assembly 11 and an arc-shaped pressure arm 14, the welding head 10 maintains a tight fit with the end of the pedal lever 4 throughout the welding process, achieving automated welding of the full-circumference fillet weld at the junction of the pedal lever 4 and the starter rod shaft head 5. This structure replaces the traditional manual welding method, significantly improving welding efficiency and ensuring consistent welding quality. The arc of the arc-shaped pressure arm 14 matches the arc-shaped surface of the starter rod shaft head 5, and in its closed state, its center coincides with the center of the fixed disk 3, applying uniform and stable radial pressure to the welding head 10. This effectively solves the technical problem of small contact area and insufficient penetration depth in conventional resistance welding caused by the arc surface of the starter rod shaft head 5, ensuring sufficient bonding strength and reliability of the welded joint. In addition, the timing coordination between the linkage drive component 12 and the pressure application component 11 enables the welding head 10 to automatically switch between welding and reset states, simplifying the operation process and improving the automation level of the equipment.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A motorcycle starter rod welding machine, comprising a base plate, a feeding rack at one end of the base plate, and foot pedal rods to be welded placed on the feeding rack, characterized in that, The base plate has a fixed plate in the middle, the foot pedal rod passes through the center of the fixed plate, and also includes a shaft head feeding mechanism and a rotary welding mechanism; The shaft head feeding mechanism is located on the side of the base plate away from the loading rack. It is used to supply the starter rod shaft head to the welding station and to make the starter rod shaft head at the bottom level at the same height as the end of the foot pedal rod. The rotary welding mechanism includes arc-shaped guide grooves symmetrically opened on both sides of the fixed plate, the arc-shaped guide grooves are slidably connected to the slider, and the upper edge of the slider is slidably provided with a welding head in the direction towards the center of the fixed plate; As the slider slides from one end of the arc-shaped guide groove to the other end, the welding head makes a circular motion around the center of the fixed plate.

2. The motorcycle starter rod welding machine according to claim 1, characterized in that, A pressure-applying component is provided on the outer side of the fixed plate. The pressure-applying component drives the welding head to move towards the center of the fixed plate until a preset welding distance is formed between it and the foot pedal. A linkage drive component is provided between the fixed plate and the base plate. The linkage drive component simultaneously drives the slider to slide along the arc-shaped guide groove and drives the pressure-applying component to move.

3. The motorcycle starter rod welding machine according to claim 2, characterized in that, The pressure application assembly includes a limiting ring fixed to one end of the welding head away from the center of the fixed plate. A return spring is provided between the limiting ring and the slider. The return spring drives the welding head away from the center of the fixed plate. Rotary seats are rotatably connected to both sides of the fixed plate. The rotating seats are rotatably connected to the ends of the arc-shaped pressure arms. The arc-shaped pressure arms have an arc-shaped structure. Bent ends are fixedly connected to one end of each of the two arc-shaped pressure arms near the rotating seats. A push-opening spring is provided between the two bent ends.

4. A motorcycle starter rod welding machine according to claim 3, characterized in that, The linkage drive assembly includes a guide column fixed between the fixed plate and the base plate. A lifting seat is slidably connected to the middle of the guide column. Extending frames are provided on both sides of the lifting seat. One end of the two extending frames is rotatably connected to a pull rod. The other end of the pull rod is rotatably connected to the side of the slider. A lifting screw that drives the lifting seat to move along the guide column is rotatably connected to the base plate.

5. A motorcycle starter rod welding machine according to claim 4, characterized in that, The lifting seat is equipped with a linkage fork at its end. The linkage fork has a U-shaped structure, with its open end engaging with the bent end. When the lifting seat rises, the linkage fork moves the bent end, overcoming the elastic force of the opening spring and causing the ends of the two arc-shaped pressure arms away from the rotating seat to open. When the lifting seat descends, the linkage fork disengages from the bent end, and the opening spring pushes the ends of the two arc-shaped pressure arms away from the rotating seat to close. At this time, the centers of the two arc-shaped pressure arms coincide with the center of the fixed plate and apply pressure to the welding head.

6. A motorcycle starter rod welding machine according to claim 1, characterized in that, The shaft head feeding mechanism includes a column fixedly connected to the base plate. A support plate is provided on the side of the column near the fixed plate. A shaft head hopper is provided on the top of the column for vertically stacking and storing multiple starter rod shaft heads. The bottom starter rod shaft head rests on the support plate.

7. A motorcycle starter rod welding machine according to claim 6, characterized in that, The support plate is rotatably connected to the column. A spring seat is provided on the opposite side of the support plate and the column. The two spring seats are respectively connected to the two ends of the support spring. When the support spring is in its natural state, the top surface of the support plate is flush with the top surface of the feeding rack.

8. A motorcycle starter rod welding machine according to claim 6, characterized in that, The shaft head hopper includes a back plate fixedly connected to the column. Multiple C-shaped side frames are evenly distributed on the back plate. The openings of the side frames face the fixed plate. Lateral positioning vertical rods are provided on the inner walls of the side frames. The lateral positioning vertical rods abut against the outer wall of the starter rod shaft head. A central positioning vertical rod is provided in the middle of the back plate. The central positioning vertical rod passes through the central hole of the starter rod shaft head.

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