CN-121972872-A - Motorcycle starting rod welding machine

Abstract

The invention relates to the technical field of starting rod welding and discloses a motorcycle starting rod welding machine which comprises a bottom plate, wherein 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 fixed disc is arranged in the middle of the bottom plate, the pedal rod penetrates through the center of the fixed disc, the welding machine further comprises a shaft head feeding mechanism and a rotary welding mechanism, the rotary welding mechanism comprises arc-shaped guide grooves symmetrically arranged at two sides of the fixed disc, the arc-shaped guide grooves are connected with a sliding block in a sliding mode, and a welding head is slidably arranged on the sliding block along the direction facing the center of the fixed disc. According to the invention, through the cooperative cooperation of the rotary welding mechanism and the linkage driving assembly, the linkage driving assembly is utilized to drive the sliding block to slide along the arc-shaped guide groove, so that the welding head can accurately perform circular motion around the center of the fixed disc, and meanwhile, through the linkage control of the pressing assembly and the arc-shaped pressing arm, the welding head is ensured to be tightly attached to the end part of the pedal rod in the whole welding process, and the automatic welding of the full-circumference fillet weld at the joint of the pedal rod and the starting rod shaft head is realized.

Inventors

• Pi Dabing

Assignees

• 重庆一言机械有限公司

Dates

Publication Date

20260505

Application Date

20260407

Claims (8)

1. 1. The motorcycle starting rod welding machine comprises a bottom plate, wherein one end of the bottom plate is provided with a feeding frame, and a pedal rod to be welded is placed on the feeding frame; the shaft head feeding mechanism is arranged on one side of the bottom plate, far away from the feeding frame, and is used for feeding a starting rod shaft head to the welding station and enabling the starting rod shaft head at the bottom to be equal to the end part of the pedal rod in height; the rotary welding mechanism comprises arc-shaped guide grooves symmetrically arranged on two sides of the fixed disc, the arc-shaped guide grooves are connected with a sliding block in a sliding manner, and a welding head is slidably arranged on the sliding block along the direction facing the center of the fixed disc; when the sliding block slides from one end of the arc-shaped guide groove to the other end, the welding head moves circularly around the center of the fixed disc.
2. 2. The motorcycle starting rod welding machine according to claim 1, wherein a pressing assembly is arranged on the outer side of the fixed disc, the pressing assembly drives the welding head to move towards the center of the fixed disc until a preset welding distance is formed between the welding head and the pedal rod, a linkage driving assembly is arranged between the fixed disc and the bottom plate, and the linkage driving assembly drives the sliding block to slide along the arc-shaped guide groove at the same time and drives the pressing assembly to act.
3. 3. The motorcycle starting rod welding machine according to claim 2, wherein the pressing assembly comprises a limiting ring fixedly arranged at one end of the welding head, far away from the center of the fixed disc, a reset spring is arranged between the limiting ring and the sliding block and drives the welding head to be far away from the center of the fixed disc, rotating bases are rotatably connected to two sides of the fixed disc, the rotating bases are rotatably connected with the end parts of the arc-shaped pressing arms, the arc-shaped pressing arms are in arc-shaped structures, bending ends are fixedly connected to one ends, close to the rotating bases, of the two arc-shaped pressing arms, and a jacking spring is arranged between the two bending ends.
4. 4. The motorcycle starting rod welding machine according to claim 3, wherein the linkage driving assembly comprises a guide post fixedly arranged between the fixed disc and the bottom plate, the middle part of the guide post is slidably connected with a lifting seat, two sides of the lifting seat are provided with extension frames, the end parts of the two extension frames are rotationally connected with one end of a traction rod, the other end of the traction rod is rotationally connected with the side surface of the sliding block, and the bottom plate is rotationally connected with a lifting screw rod for driving the lifting seat to move along the guide post.
5. 5. The motorcycle starting rod welding machine according to claim 4, wherein the end of the lifting seat is provided with a linkage shifting fork, the linkage shifting fork is of a U-shaped structure, the opening end of the linkage shifting fork is matched with the bending end, when the lifting seat ascends, the linkage shifting fork shifts the bending end, one end of the two arc pressing arms far away from the rotating seat is opened against the elastic force of the jacking spring, when the lifting seat descends, the linkage shifting fork is separated from the bending end, the jacking spring pushes one end of the two arc pressing arms far away from the rotating seat to be closed, and at the moment, the circle centers of the two arc pressing arms coincide with the center of the fixed disc and apply pressure to the welding head.
6. 6. The motorcycle starting rod welding machine according to claim 1, wherein the shaft head feeding mechanism comprises a vertical column fixedly connected with the bottom plate, a supporting plate is arranged on one side, close to the fixed plate, of the vertical column, a shaft head storage bin is arranged at the top of the vertical column and is used for vertically stacking and storing a plurality of starting rod shaft heads, and the starting rod shaft heads at the bottom are located on the supporting plate.
7. 7. The motorcycle starting rod welding machine of claim 6, wherein the supporting plate is rotatably connected with the upright, spring seats are arranged on opposite sides of the supporting plate and the upright, the two spring seats are respectively connected with two ends of the supporting spring, and when the supporting spring is in a natural state, the top surface of the supporting plate is flush with the top surface of the feeding frame.
8. 8. The motorcycle starting rod welding machine according to claim 6, wherein the shaft head bin comprises a back plate fixedly connected with the upright post, side frames with a plurality of C-shaped structures are uniformly distributed on the back plate, openings of the side frames face the fixed disc, lateral positioning vertical rods are arranged on the inner walls of the side frames and are in butt joint with the outer walls of the starting rod shaft heads, central positioning vertical rods are arranged in the middle of the back plate, and the central positioning vertical rods penetrate through central holes of the starting rod shaft heads.

Description

Motorcycle starting rod welding machine Technical Field The invention relates to the technical field of starting rod welding, in particular to a motorcycle starting rod welding machine. Background In the field of motorcycle manufacturing, the starting rod is used as a key control component, and the structure of the starting rod is generally composed of a starting rod shaft head in a semicircular configuration and a rod-shaped pedal rod. The pedal rod is required to be bent to a specific angle according to the whole vehicle layout and the human engineering requirement, so that the component cannot be formed through an integrated casting process. The existing manufacturing process generally carries out bending processing on a long straight rod material to form a pedal rod with a specific shape, and then carries out welding fixation on the end part of the pedal rod and a starting rod shaft head so as to realize reliable connection of the pedal rod and the starting rod shaft head. In the conventional rod welding process, in order to improve production efficiency, two parts to be connected are welded after being directly abutted by adopting a resistance welding mode. However, since the outer surface of the head of the starting lever is of an arc-shaped structure, when the end of the pedal lever is in contact with the side surface thereof, the contact interface formed between the pedal lever and the side surface thereof is small, resulting in insufficient resistance heat input in the welding area, and it is difficult to form a welded joint having sufficient penetration and bonding strength. Therefore, in actual production, it is often necessary to perform manual arc welding or gas shielded welding of full circumference fillet welds along the junction of the stub shaft arc surface and the pedal lever end depending on the hand of the operator. The welding mode has higher requirements on the operation skills of welders, and the welding quality is easily affected by human factors, so that the problems of obvious instability and poor consistency exist. In view of this, it is necessary to design a special welding device for the structural characteristics of the starting rod, so as to realize efficient and stable welding processing of the components. Disclosure of Invention The invention provides a motorcycle starting rod welding machine, which solves the problems in the prior art. In order to achieve the above purpose, the present invention provides the following technical solutions: The motorcycle starting rod welding machine comprises a bottom plate, wherein one end of the bottom plate is provided with a feeding frame, a pedal rod to be welded is placed on the feeding frame, a fixed disc is arranged in the middle of the bottom plate, and the pedal rod penetrates through the center of the fixed disc, and the welding machine further comprises a shaft head feeding mechanism and a rotary welding mechanism; the shaft head feeding mechanism is arranged on one side of the bottom plate, far away from the feeding frame, and is used for feeding a starting rod shaft head to the welding station and enabling the starting rod shaft head at the bottom to be equal to the end part of the pedal rod in height; the rotary welding mechanism comprises arc-shaped guide grooves symmetrically arranged on two sides of the fixed disc, the arc-shaped guide grooves are connected with a sliding block in a sliding manner, and a welding head is slidably arranged on the sliding block along the direction facing the center of the fixed disc; when the sliding block slides from one end of the arc-shaped guide groove to the other end, the welding head moves circularly around the center of the fixed disc. As a preferable technical scheme of the invention, the outer side of the fixed disc is provided with the pressing component, the pressing component drives the welding head to move towards the center of the fixed disc until a preset welding distance is formed between the welding head and the pedal rod, a linkage driving component is arranged between the fixed disc and the bottom plate, and the linkage driving component simultaneously drives the sliding block to slide along the arc-shaped guide groove and drives the pressing component to act. As a preferable technical scheme of the invention, the pressing assembly comprises a limiting ring fixedly arranged at one end of the welding head far away from the center of the fixed disc, a reset spring is arranged between the limiting ring and the sliding block, the reset spring drives the welding head to be far away from the center of the fixed disc, two sides of the fixed disc are rotationally connected with rotating seats, the rotating seats are rotationally connected with the end parts of arc-shaped pressing arms, the arc-shaped pressing arms are in arc-shaped structures, one ends, close to the rotating seats, of the two arc-shaped pressing arms are fixedly connected with bending ends, and a jacking spring is