Motorcycle aluminum alloy frame welding equipment with multidirectional adjusting support structure

Abstract

The invention relates to the technical field of motorcycle frame welding, and discloses motorcycle aluminum alloy frame welding equipment with a multi-direction adjusting support structure. The clamping part comprises a machine frame and a movable base installed on the machine frame in a sliding mode, and a clamping piece used for fixing an external die casting is arranged on the movable base; and the grinding part comprises a lifting platform installed on the rack in a sliding mode, and an inner supporting grinding piece used for fixing the outer steering head pipe is rotationally installed on the lifting platform through a bearing seat arranged in the lifting platform. The motorcycle aluminum alloy frame welding equipment with the multi-direction adjusting support structure can effectively solve the problems that in the prior art, the to-be-welded areas of all main beam die castings need to be subjected to deburring treatment independently before welding, the manual operation frequency is high, and the labor intensity is large.

Description

Technical Field

[0001] This invention relates to the field of motorcycle frame welding technology, and specifically to a motorcycle aluminum alloy frame welding equipment with a multi-directional adjustable bracket structure. Background Technology

[0002] As the core load-bearing structure of the entire motorcycle, the design, materials, and manufacturing process of the motorcycle frame directly determine the vehicle's handling precision, riding stability, and ability to adapt to different road conditions. From a material perspective, they are mainly divided into steel tube frames, aluminum alloy frames, and carbon fiber frames. In addition, depending on the vehicle type and functional positioning, frames have also evolved into various structural forms such as cradle type, diamond type, and twin-spar type.

[0003] Taking the twin-spar frame as an example, one of the core manufacturing steps is to precisely weld the symmetrical main beam die-cast parts to both sides of the steering head tube. However, during the forming process, burrs often appear on the edge areas of the die-cast parts due to mold wear and other reasons. These burrs will affect the welding quality. Therefore, before welding, it is necessary to deburr the areas to be welded of all main beam die-cast parts separately. This requires frequent manual operation and is labor-intensive. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a motorcycle aluminum alloy frame welding device with a multi-directional adjustable bracket structure. This device effectively solves the problem of high manual operation frequency and high labor intensity in existing technologies, which require deburring of the welding areas of all main beam die-cast parts before welding.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a welding device for motorcycle aluminum alloy frames with a multi-directional adjustable bracket structure, comprising: Laser welding head; The clamping part includes a frame and a movable seat slidably mounted on the frame, the movable seat being provided with clamping members for fixing external die-cast parts; The grinding section includes a lifting platform slidably mounted on a frame, wherein the lifting platform is rotatably mounted with an inner support grinding component for fixing an external steering head tube via a bearing seat disposed therein; The inner support grinding component includes a mounting sleeve that rotates with the bearing seat inside the lifting platform. The mounting sleeve is hollow and has an inner support movably mounted through a through hole. The mounting sleeve is slidably connected to a grinding tool connected to the outer surface of the inner support through a square hole, which is used to grind the welding end face of the external die-casting part. The space enclosed by the bearing seats of the lifting platform is equipped with a pusher for adjusting the position of the inner support and the grinder.

[0006] Furthermore, the clamping member includes a mold disposed on a movable seat for placing an external die-casting part, and the mold is slidably mounted with a clamping block for fixing the external die-casting part through a groove disposed therein; The frame is fixedly connected to a mounting base for installing a jacking component. The mounting base is located below the lifting platform and a lifting unit for driving the lifting platform to move up and down is installed on it.

[0007] Furthermore, the inner support includes a U-shaped clamp rod that slides with the through hole. Both ends of the U-shaped clamp rod are designed with arc-shaped wedge surfaces. The U-shaped clamp rod is connected to the inside of the mounting sleeve through a strong spring disposed on its inner side. A wedge block is fixedly connected to the side of the U-shaped clamp rod away from the strong spring.

[0008] Furthermore, the polisher includes a polishing block that slides with the square hole, and the outer end face of the polishing block is designed with an arc surface. The polishing block is slidably connected to a T-shaped connecting rod fixedly mounted on a U-shaped clamp through an internal cavity. The end face of the T-shaped connecting rod away from the U-shaped clamp is designed with magnetism. A miniature spring connected to the inner wall of the internal cavity is sleeved on the outer circumference of the T-shaped connecting rod. The inner wall of the internal cavity is provided with a magnetic block that repels the magnetic force of the end face of the T-shaped connecting rod.

[0009] Furthermore, the pusher includes a fixed rod fixedly installed on the upper surface of the fixed base, and the central axis of the fixed rod coincides with the central axis of the mounting sleeve. An upper push block is fixedly connected to the top end of the fixed rod, and a lower push block is slidably installed on the outer surface of the fixed rod through a keyway. The lower ends of the upper push block and the lower push block are both tapered. An annular groove is formed on the outer circumferential surface of the upper push block and the lower push block. A ball bearing that fits against the inner wall of the annular groove is rotatably installed inside the wedge.

[0010] Furthermore, the push block is slidably mounted with a limit rod through a transverse blind hole opened inside it. The end of the limit rod away from the fixed rod is provided with a limit spring connected to the inner wall of the transverse blind hole. The outer circumferential surface of the fixed rod is provided with a pin hole that engages with the end of the limit rod. The outer edge of the pin hole is chamfered.

[0011] Furthermore, an unlocking ring is provided above the push block, which slides against the outer circumferential surface of the fixed rod. A travel guide rod and a pressure rod are fixedly connected to the lower surface of the unlocking ring, and the travel guide rod and the pressure rod are arranged in a circumferential array on the lower surface of the unlocking ring. The bottom end of the travel guide rod extends into the interior of the push block and is provided with a return spring connected to the interior of the push block. The lower end of the pressure rod adopts a wedge surface design, and the interior of the limiting rod is provided with a wedge-shaped hole that fits against the wedge surface of the pressure rod.

[0012] The technical solution provided by this invention has the following advantages compared with the prior art: This invention achieves integrated operation by incorporating an internal support grinding component: In the initial state, both the internal support and the grinding tool are retracted and housed inside the mounting sleeve, forming a compact structure; when the lifting platform drives the internal support grinding component to move to the preset working position, under the action of the pusher, the internal support and the grinding tool synchronously expand outward and extend to the outside of the mounting sleeve; at this time, the mounting sleeve starts to rotate, and the grinding block further expands outward under the action of centrifugal force, ensuring reliable contact with the surface to be processed, and simultaneously grinding the ends of the two external die-cast parts through high-speed rotation; this design integrates the grinding pretreatment process with the subsequent welding operation, eliminating the separate pre-processing step in the traditional process and simplifying the production process. On the other hand, through synchronous mechanical grinding, the mating end faces of the two die-cast parts and the outer circumference of the steering head tube are made to fit better, which not only reduces the intensity of manual operation, but also significantly improves the machining accuracy of the welding mating surfaces of the die-cast parts. After the grinding operation is completed, the inner support and the pusher work together to form a stable clamp and fixation for the steering head tube, providing reliable fixation for the welding process of the die-cast parts and the steering head tube. After the welding is completed, the lifting platform drives the inner support grinding part to move down as a whole. Its inner support and grinder automatically retract and return to the inside of the installation sleeve. The inner support grinding part smoothly detaches from the steering head tube, which facilitates the quick removal of the welded steering head tube and the external die-cast parts assembly, improving the continuity and efficiency of the operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention in a polishing state; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention in a welding state; Figure 3 This is a three-dimensional cross-sectional view of the frame, grinding section, and fixing base according to an embodiment of the present invention. Figure 4 For the implementation of this invention Figure 3 A magnified view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the three-dimensional separation structure of the internal support grinding component according to an embodiment of the present invention; Figure 6 This is a three-dimensional cross-sectional structural diagram of the mounting sleeve and grinding block according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the three-dimensional transformation structure of the internal support grinding component according to an embodiment of the present invention; Figure 8 This is a three-dimensional cross-sectional structural diagram of the grinding block, wedge block, ball bearing, and push block according to an embodiment of the present invention.

[0015] Figure 9 This is a schematic diagram of the three-dimensional separation structure of the unlocking ring, the limiting rod, and the push block in an embodiment of the present invention.

[0016] The labels in the diagram represent: 1. Laser welding head; 2. Clamping part; 21. Frame; 211. Fixed base; 22. Moving base; 23. Clamping component; 231. Mold; 232. Clamping block; 3. Grinding part; 31. Lifting platform; 32. Internal support grinding component; 321. Mounting sleeve; 3211. Through hole; 3212. Square hole; 322. Internal support; 3221. U-shaped clamping rod; 3222. Strong spring; 3 223. Wedge block; 3224. T-shaped connecting rod; 3225. Miniature spring; 3226. Ball bearing; 323. Grinding tool; 3231. Grinding block; 3232. Magnetic block; 3233. Internal cavity; 4. Pushing component; 41. Fixing rod; 411. Pin hole; 42. Upper push block; 43. Lower push block; 431. Limiting rod; 4311. Wedge hole; 432. Limiting spring; 433. Unlocking ring; 434. Pressure rod. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments.

[0019] Example: Please refer to Figures 1-9 This invention provides a technical solution: a welding device for motorcycle aluminum alloy frames with a multi-directional adjustable bracket structure, comprising: Laser welding head 1; The clamping part 2 includes a frame 21 and a movable seat 22 that is slidably mounted on the frame 21. The movable seat 22 is provided with a clamping member 23 for fixing the external die-casting part. The grinding section 3 includes a lifting platform 31 that is slidably mounted on the frame 21. The lifting platform 31 is rotatably mounted with an inner support grinding component 32 for fixing the external steering head tube via a bearing seat provided inside it. The inner support grinding component 32 includes a mounting sleeve 321 that rotates with the bearing seat inside the lifting platform 31. The mounting sleeve 321 has a hollow design, and an inner support 322 is movably mounted on the mounting sleeve 321 through a through hole 3211. A grinding tool 323 connected to the outer surface of the inner support 322 is slidably connected to the mounting sleeve 321 through a square hole 3212 inside the mounting sleeve 321. This tool is used to grind the welded end face of the external die-casting part. The upper end of the mounting sleeve 321 has a chamfered design. The space enclosed by the bearing seats of the lifting platform 31 is provided with a pusher 4 for adjusting the position of the inner support 322 and the grinder 323.

[0020] The clamping member 23 includes a mold 231 disposed on the movable seat 22 for placing an external die casting, and a clamping block 232 for fixing the external die casting is slidably mounted on the mold 231 through a slide groove disposed therein; The frame 21 is fixedly connected to a mounting base 211 for mounting the pusher 4. The mounting base 211 is located below the lifting platform 31 and a lifting unit for driving the lifting platform 31 to move up and down is mounted on it.

[0021] The inner support 322 includes a U-shaped clamping rod 3221 that slides with the through hole 3211. Both ends of the U-shaped clamping rod 3221 are designed with arc-shaped wedge surfaces. The U-shaped clamping rod 3221 is connected to the inside of the mounting sleeve 321 through a strong spring 3222 set on its inner side. A wedge block 3223 is fixedly connected to the side of the U-shaped clamping rod 3221 away from the strong spring 3222.

[0022] The polisher 323 includes a polishing block 3231 that slides with a square hole 3212, and the outer end face of the polishing block 3231 is designed with an arc surface. The polishing block 3231 is slidably connected to a T-shaped connecting rod 3224 fixedly installed on a U-shaped clamping rod 3221 through an internal cavity 3233. The end face of the T-shaped connecting rod 3224 away from the U-shaped clamping rod 3221 is designed with a magnetic feature. A miniature spring 3225 connected to the inner wall of the internal cavity 3233 is sleeved on the outer circumference of the T-shaped connecting rod 3224. A magnetic block 3232 that is magnetically repelled by the end face of the T-shaped connecting rod 3224 is provided on the inner wall of the internal cavity 3233.

[0023] The pusher 4 includes a fixed rod 41 fixedly installed on the upper surface of the fixed base 211, and the central axis of the fixed rod 41 coincides with the central axis of the mounting sleeve 321. The top end of the fixed rod 41 is fixedly connected to an upper push block 42, and a lower push block 43 is slidably installed on the outer surface of the fixed rod 41 through a keyway. The lower ends of the upper push block 42 and the lower push block 43 are both tapered. The outer circumferential surface of the upper push block 42 and the lower push block 43 are both provided with an annular groove. The wedge block 3223 is rotatably installed with a ball bearing 3226 that fits against the inner wall of the annular groove.

[0024] The push block 43 is slidably mounted with a limit rod 431 through a transverse blind hole opened inside it. The end of the limit rod 431 away from the fixed rod 41 is provided with a limit spring 432 connected to the inner wall of the transverse blind hole. The outer circumference of the fixed rod 41 is provided with a pin hole 411 that engages with the end of the limit rod 431. The outer edge of the pin hole 411 is chamfered.

[0025] The upper part of the push block 43 is provided with an unlocking ring 433 that slides with the outer circumferential surface of the fixed rod 41. The lower surface of the unlocking ring 433 is fixedly connected with a travel guide rod and a pressure rod 434, and the travel guide rod and pressure rod 434 are arranged in a circumferential array on the lower surface of the unlocking ring 433. The bottom end of the travel guide rod extends into the interior of the push block 43 and is provided with a return spring connected to the interior of the push block 43. The elastic force of the return spring is greater than the weight of the unlocking ring 433 plus the travel guide rod and pressure rod 434. The lower end of the pressure rod 434 adopts a wedge surface design. The limit rod 431 is provided with a wedge-shaped hole 4311 that fits with the wedge surface of the pressure rod 434.

[0026] refer to Figures 1-9 In this application, two external die-cast parts are first fixed by the clamping part 2. Then, the welding areas of the two external die-cast parts are simultaneously ground by rotating the grinder 323 in the inner support grinding part 32 installed on the lifting platform 31. After the processing is completed, the steering head tube is clamped by the inner support grinding part 32 to facilitate welding. The processing and welding operations are combined, reducing the need for separate processing of the die-cast parts before welding. At the same time, it is convenient to align and weld the two die-cast parts with the steering head tube. Preferably, there are four sets of inner support members 322 and grinders 323 in the inner support grinding part 32. The inner support members 322 and grinders 323 are arranged in a circumferential array on the mounting sleeve 321. The U-shaped clamping rod 3221 included in the inner support member 322 is provided with two sets of wedges 3223 with the same structure. The two sets of wedges 3223 respectively form a corresponding fit with the upper push block 42 and the lower push block 43 in the pusher 4 to ensure the symmetry and stability of power transmission.

[0027] The feeding process of die castings: First, the operator needs to place the two die-cast parts on the left and right at the predetermined positions in the mold 231. Then, a calibration ruler is used to calibrate and align the ends of the two die-cast parts to be welded. If unevenness is detected at the ends to be welded, the position of the die-cast parts needs to be adjusted to ensure that the two ends to be welded are flush. Finally, an external drive (preferably a cylinder) drives multiple sets of clamping blocks 232 inside the mold 231 to slide along their sliding tracks inside the mold 231, gradually bringing them closer to the die-cast parts and applying appropriate pressure to firmly fix the die-cast parts inside the mold 231. This completes the die-cast part loading process and prepares the area to be welded for subsequent processing.

[0028] Treatment of the area to be welded on the die-cast part: In the existing processing method, the operator needs to grind the ends of all die-cast parts to be welded separately before welding. This method has a high operation frequency. In order to improve the level of automation, the workflow of this application is as follows: In the initial state, the lifting platform 31 is located inside the frame 21. The inner support 322 and the grinder 323 in the inner support grinding part 32 are both in the retracted state. At this time, the upper and lower wedges 3223 of the U-shaped clamping rod 3221 are located below the upper push block 42 and the lower push block 43, respectively. The upper push block 42 and the lower push block 43 have no force on the wedges 3223. The U-shaped clamping rod 3221 is retracted into the installation sleeve 321 under the action of the strong spring 3222. At the same time, under the action of the elastic force of the micro spring 3225 and the repulsive force between the magnetic block 3232 and the end of the T-shaped connecting rod 3224, the end of the T-shaped connecting rod 3224 is in the middle position of the inner cavity 3233. At this time, the grinding block 3231 is also retracted into the installation sleeve 321. First, the lifting unit (preferably a hydraulic telescopic rod) drives the lifting platform 31 and the inner support grinding component 32 to move upward synchronously. The pusher 4 is stationary on the fixed seat 211. The upper and lower sets of wedges 3223 of the U-shaped clamping rod 3221 contact the tapered surfaces at the lower ends of the upper push block 42 and the lower push block 43 respectively and are squeezed by the tapered surfaces. The strong spring 3222 is compressed. When the ball 3226 on the wedge 3223 fits into the corresponding annular groove, it reaches the working position and stops moving upward. At this time, the ends of the four sets of U-shaped clamping rods 3221 extend out of the outside of the mounting sleeve 321 synchronously. The corresponding four sets of grinding blocks 3231 also extend out of the outside of the mounting sleeve 321. The end of the T-shaped connecting rod 3224 is still in the middle position of the inner cavity 3233. Secondly, the mounting sleeve 321 is driven to rotate at high speed by an external power source (preferably a servo motor). The balls 3226 on the wedge 3223 roll in the corresponding annular groove. Under the action of centrifugal force, the grinding block 3231 further expands to the outside of the mounting sleeve 321. At this time, the miniature spring 3225 on the T-shaped connecting rod 3224 is further compressed. The end of the T-shaped connecting rod 3224 is located on the side of the inner cavity 3233 near the U-shaped clamping rod 3221. Subsequently, the moving seat 22, the mold 231 and the external die-casting parts on it are driven to move on the frame 21 and gradually approach the inner support grinding part 32 by an external driving component (preferably an electric push rod). The outer grinding surface of the grinding block 3231 is arc-shaped. The ends of the two die-casting parts to be welded are... The arc-shaped outer surface of the grinding block 3231 is contacted for grinding. The electric push rod drives the mold 231 and the external die casting to move back and forth a small distance. The rotating grinding block 3231 simultaneously performs fine grinding and deburring on the die casting ends to be welded on both sides. After grinding, the electric push rod drives the moving seat 22 and the mold 231 and the external die casting to move away from the inner support grinding component 32 by a certain distance. Finally, the mounting sleeve 321 stops rotating, and the lifting unit drives the lifting platform 31 and the inner support grinding component 32 to move downward to the initial state. The four sets of U-shaped clamping rods 3221 retract and reset synchronously under the action of the strong spring 3222. The grinding block 3231 retracts synchronously back into the mounting sleeve 321, completing the grinding treatment of the die casting area to be welded. It is worth noting that when the die-cast part approaches the grinding block 3231, its end will be squeezed against the grinding block 3231. Since the grinding block 3231 is movably mounted on the U-shaped clamping rod 3221, the grinding block 3231, which is squeezed, will shrink a certain distance into the mounting sleeve 321, thereby playing a buffering role and effectively preventing the end of the die-cast part to be welded from being damaged by the high-speed rotating grinding block 3231.

[0029] Welding of the steering head tube to the die-cast part: Specifically, the outer surface of the mounting sleeve 321 is provided with a positioning block. The upper surface of the positioning block is flush with the clamping surface of the lower end of the U-shaped clamping rod 3221. First, the operator puts the steering head tube on the outside of the mounting sleeve 321 and lowers it onto the positioning block. The lifting unit drives the lifting platform 31 to move the inner support grinding part 32 and the steering head tube on it upward. When the inner support grinding part 32 moves to the working position, that is, the ball 3226 on the wedge 3223 fits into the annular groove. At this time, the four sets of U-shaped clamping rods 3221 extend out of the outside of the mounting sleeve 321 under the action of the pusher 4 and clamp the upper and lower ends of the steering head tube. The steering head tube is in the welding position. Secondly, since the steering head tube is put on the mounting sleeve 321, the upper surface of the positioning block is flush with the clamping surface of the lower end of the U-shaped clamping rod 3221. On the outside of 21, as the U-shaped clamp 3221 moves outward, the grinding block 3231 is blocked by the steering head tube and cannot move outward any further. The outer ends of the four sets of grinding blocks 3231 are pressed against the inner wall of the steering head tube. At this time, the end of the internal T-shaped connecting rod 3224 is located on the side of the built-in cavity 3233 away from the U-shaped clamp 3221. The grinding block 3231 and the U-shaped clamp 3221 together fix the steering head tube. Finally, the electric push rod drives the moving seat 22 and the external die-casting part on it to approach the steering head tube. After the end of the external die-casting part to be welded is aligned with the outer circumferential surface of the steering head tube, the laser welding head 1 welds the two die-casting parts to both sides of the steering head tube, completing the welding operation between the die-casting parts and the steering head tube.

[0030] The inner support grinding part 32 is detached from the steering head tube: To ensure reliable fixation of the steering head tube, a minimal gap is designed between the outer wall of the mounting sleeve 321 and the inner wall of the steering head tube to minimize radial displacement of the tube during assembly and welding. Based on this gap design, after welding, the steering head tube must be moved upward strictly along the central axis of the mounting sleeve 321 to ensure smooth removal. If any angular deviation occurs in the tube during removal, the removal will be obstructed due to the contact interference between the outer wall of the mounting sleeve 321 and the inner wall of the tube. Therefore, after welding, the inner support grinding component 32 must be moved downward by the lifting unit to disengage the mounting sleeve 321 from the inner wall of the steering head tube, releasing the contact constraint between them and ensuring that the welded steering head tube and the assembly composed of the two die-cast parts can be smoothly removed. Specifically, firstly, the lifting unit lowers the lifting platform 31 and the inner support grinding component 32. The two sets of wedges 3223 on the U-shaped clamping rod 3221 move downwards away from the upper push block 42 and the lower push block 43, respectively. Under the action of the strong spring 3222, the U-shaped clamping rod 3221 immediately retracts into the mounting sleeve 321. When the upper wedge 3223 moves down to the lower push block 43, it is blocked. At this point, the mounting sleeve 321 has not yet disengaged from the steering head tube, so it needs to continue moving downwards. Subsequently, the upper wedge 3223 contacts and presses down the unlocking ring 433. The pressure rod 434 on the unlocking ring 433 and the limit rod 431... The internal wedge-shaped holes 4311 fit together, and the unlocking ring 433 drives the pressure rod 434 to move downward and squeeze the wedge-shaped holes 4311, so that the limiting rod 431 is squeezed and retracted into the push block 43. The limiting spring 432 is compressed. At this time, the limiting rod 431 disengages from the pin hole 411, so that the push block 43 is unlocked from the fixing rod 41. The wedge block 3223 located above can drive the push block 43 to slide downward along the keyway on the outer surface of the fixing rod 41. When the inner support grinding part 32 descends and disengages from the steering head tube, it is only necessary to operate the multiple clamping blocks 232 on the mold 231 to unlock and open them, so that the welding assembly can be taken out from the mold 231.

[0031] Reset of inner support grinding part 32: When the lifting platform 31 and the inner support grinding part 32 move upward, the wedge 3223 on the upper part of the U-shaped clamping rod 3221 will gradually move away from the lower push block 43. At this time, the return spring releases its elastic force, causing the unlocking ring 433 to move upward and reset. The unlocking ring 433 then moves upward in sync with the pressure rod 434, causing it to break free from the contact constraint with the wedge hole 4311. In this state, the limit spring 432 tends to push the limit rod 431 towards the fixed rod 41, but the end of the limit rod 431 is blocked by the fixed rod 41. Unable to extend outwards, the limiting spring 432 remains compressed. As the mounting sleeve 321 continues to move the U-shaped clamping rod 3221 upwards until the lower wedge 3223 contacts the lower push block 43, the lower wedge 3223 applies a pushing force, driving the lower push block 43 to slide upwards along the fixing rod 41. When the limiting rod 431 moves with the lower push block 43 to the position corresponding to the pin hole 411, the limiting spring 432 releases its compressive potential energy, pushing the limiting rod 431 out of the lower push block 43 and engaging it with the pin hole 411. Notably, the end of the pin hole 411 features a chamfered design, which effectively reduces the sliding resistance of the limiting rod 431, ensuring smooth engagement. At this point, the lower push block 43 precisely reaches the preset working position, and the inner support grinding part 32 synchronously returns to its initial working position, preparing for subsequent processes.

[0032] The aforementioned internal support grinding component 32 has the following advantages: Firstly, both the inner support 322 and the grinder 323 are mounted on the mounting sleeve 321 via a sliding connection, and a sliding connection structure is also provided between them. When the pusher 4 drives the inner support 322 to complete the opening action, the grinder 323 can be driven to open synchronously through the linkage mechanism. At this time, the inner support grinding component 32 rotates at high speed, and the grinder 323 mounted on it can simultaneously grind the ends of the two external die-cast parts on the mold 231. This design eliminates the process of manually processing each die-cast part before welding, which not only reduces manual operation steps but also effectively reduces the labor intensity of operators and improves overall production efficiency.

[0033] Secondly, the high-speed rotation of the inner support grinding component 32 simultaneously performs fine grinding on the welding areas of the two die-cast parts, ensuring that the welding areas of the two die-cast parts maintain consistency in shape and structural symmetry. At the same time, the welding mating surface of the inner support grinding component 32 under high-speed rotation forms a higher degree of fit with the outer circumference of the steering head tube, ultimately effectively improving welding accuracy and welding quality stability.

[0034] Thirdly, after the grinding operation is completed, the inner support grinding component 32 can further assume the function of fixing the steering head tube. With the cooperation of the push component 4, the U-shaped clamping rod 3221 will clamp the upper and lower ends of the steering head tube, while the grinding block 3231 is tightly pressed against the inner wall of the steering head tube. The two form a cooperative fixing mechanism to ensure that the steering head tube is stably assembled on the inner support grinding component 32 and avoid displacement during the welding process. In addition, both ends of the U-shaped clamping rod 3221 adopt an arc-shaped wedge surface design: on the one hand, the contact method between the arc-shaped wedge surface and the end of the inner wall of the steering head tube can effectively avoid scratches or damage to the inner wall caused by the edge of the clamping rod, ensuring the integrity of the workpiece surface; on the other hand, even if there is a slight length error in the steering head tube, the structural characteristics of the arc-shaped wedge surface can still achieve reliable clamping of both ends of the tube, improving the fixation adaptability and stability.

[0035] Fifthly, after the welding operation is completed, the lifting platform 31 is driven by the lifting unit to lower the inner support grinding component 32. The wedge block 3223 on the U-shaped clamp 3221 disengages from the upper push block 42 and the lower push block 43. Subsequently, the strong spring 3222 drives the U-shaped clamp 3221 and the grinding block 3231 to retract back into the installation sleeve 321 in a synchronized manner, so that the inner support grinding component 32 can be released from fixing the steering head tube, allowing the inner support grinding component 32 to descend smoothly and detach from the steering head tube, making it easy to directly remove the welded steering head tube and die-cast component assembly.

[0036] Advantage six: The wedges 3223 on the U-shaped clamping rod 3221 are all equipped with balls 3226, and the outer circumferential surfaces of the upper push block 42 and the lower push block 43 are all equipped with annular grooves. When the inner support grinding part 32 rotates, the balls 3226 rotate in the annular grooves, reducing the friction between the wedges 3223 and the upper push block 42 or the lower push block 43, and extending their service life.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A welding equipment for motorcycle aluminum alloy frames with a multi-directional adjustable bracket structure, characterized in that, include: Laser welding head (1); The clamping part (2) includes a frame (21) and a movable seat (22) slidably mounted on the frame (21). The movable seat (22) is provided with a clamping member (23) for fixing the external die-casting part. The grinding section (3) includes a lifting platform (31) slidably mounted on the frame (21). The lifting platform (31) is rotatably mounted with an inner support grinding component (32) for fixing the external steering head tube through a bearing seat provided inside it. The inner support grinding component (32) includes a mounting sleeve (321) that rotates with the bearing seat inside the lifting platform (31). The mounting sleeve (321) is hollow, and an inner support (322) is movably mounted on the mounting sleeve (321) through a through hole (3211) inside it. A grinding tool (323) connected to the outer surface of the inner support (322) is slidably connected to the mounting sleeve (321) through a square hole (3212) inside it, which is used to grind the welding end face of the external die-casting part. Among them, the space enclosed by the bearing seat of the lifting platform (31) is provided with a pusher (4) for adjusting the position of the inner support (322) and the grinder (323).

2. The motorcycle aluminum alloy frame welding equipment with multi-directional adjustable bracket structure according to claim 1, characterized in that: The clamping member (23) includes a mold (231) disposed on the movable seat (22) for placing the external die casting, and the mold (231) is slidably mounted with a clamping block (232) for fixing the external die casting through a groove disposed therein. The frame (21) is fixedly connected to a fixed seat (211) for installing the pusher (4). The fixed seat (211) is located below the lifting platform (31) and a lifting unit for driving the lifting platform (31) to move up and down is installed on it.

3. The motorcycle aluminum alloy frame welding equipment with multi-directional adjustable bracket structure according to claim 1, characterized in that: The inner support (322) includes a U-shaped clamp (3221) that slides with the through hole (3211). Both ends of the U-shaped clamp (3221) are designed with arc-shaped wedge surfaces. The U-shaped clamp (3221) is connected to the inside of the mounting sleeve (321) through a strong spring (3222) set on its inner side. A wedge (3223) is fixedly connected to the side of the U-shaped clamp (3221) away from the strong spring (3222).

4. The motorcycle aluminum alloy frame welding equipment with multi-directional adjustable bracket structure according to claim 3, characterized in that: The polisher (323) includes a polishing block (3231) that slides with a square hole (3212), and the outer end face of the polishing block (3231) is designed with an arc surface. The polishing block (3231) is slidably connected to a T-shaped connecting rod (3224) fixedly mounted on a U-shaped clamp (3221) through an internal cavity (3233) opened inside it. The end face of the T-shaped connecting rod (3224) away from the U-shaped clamp (3221) is designed with a magnetic feature. A miniature spring (3225) connected to the inner wall of the internal cavity (3233) is sleeved on the outer circumference of the T-shaped connecting rod (3224). The inner wall of the internal cavity (3233) is provided with a magnetic block (3232) that is magnetically repelled by the end face of the T-shaped connecting rod (3224).

5. The motorcycle aluminum alloy frame welding equipment with a multi-directional adjustable bracket structure according to claim 2, characterized in that: The pusher (4) includes a fixed rod (41) fixedly installed on the upper surface of the fixed base (211), and the central axis of the fixed rod (41) coincides with the central axis of the mounting sleeve (321). The top end of the fixed rod (41) is fixedly connected to an upper push block (42), and a lower push block (43) is slidably installed on the outer surface of the fixed rod (41) through a keyway. The lower ends of the upper push block (42) and the lower push block (43) are both tapered. The outer circumferential surface of the upper push block (42) and the lower push block (43) are both provided with an annular groove. The wedge (3223) is rotatably installed with a ball (3226) that fits against the inner wall of the annular groove.

6. The motorcycle aluminum alloy frame welding equipment with multi-directional adjustable bracket structure according to claim 5, characterized in that: The push block (43) is slidably mounted with a limiting rod (431) through a transverse blind hole opened inside it. The end of the limiting rod (431) away from the fixed rod (41) is provided with a limiting spring (432) connected to the inner wall of the transverse blind hole. The outer circumference of the fixed rod (41) is provided with a pin hole (411) that engages with the end of the limiting rod (431). The outer edge of the pin hole (411) is chamfered.

7. The motorcycle aluminum alloy frame welding equipment with a multi-directional adjustable bracket structure according to claim 6, characterized in that: The upper part of the push block (43) is provided with an unlocking ring (433) that slides on the outer circumference of the fixed rod (41). The lower surface of the unlocking ring (433) is fixedly connected with a travel guide rod and a pressure rod (434), and the travel guide rod and the pressure rod (434) are arranged in a circumferential array on the lower surface of the unlocking ring (433). The bottom end of the travel guide rod extends into the interior of the push block (43) and is provided with a reset spring connected to the interior of the push block (43). The lower end of the pressure rod (434) adopts a wedge surface design. The interior of the limiting rod (431) is provided with a wedge-shaped hole (4311) that fits against the wedge surface of the pressure rod (434).

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