Bicycle handlebar welding device and method

Abstract

The invention relates to the technical field of welding, in particular to a bicycle handlebar welding device and method.The bicycle handlebar welding device comprises a welding table, a support installed on the welding table, a supporting table installed on the support, a power assembly installed on the welding table, a transmission assembly installed on the power assembly and a linkage assembly installed on the transmission assembly; the power assembly is used for driving a vertical pipe of the bicycle handlebar to move towards the handlebar rod till the vertical pipe is tightly attached to the handlebar rod, and the linkage assembly is used for driving an angle pipe of the bicycle handlebar to move towards the joint of the vertical pipe and the handlebar rod till the two ends of the angle pipe are tightly attached to the handlebar rod and the vertical pipe correspondingly. The transmission assembly is used for transmitting power output by the power assembly to the linkage assembly; the power assembly of the single power source circularly runs, the vertical pipe and the corner pipe are sequentially and automatically controlled to be in place, operation steps are simplified, welding machining efficiency is improved, and meanwhile the running and using cost of equipment is greatly reduced through the single power source.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a bicycle handlebar welding device and method. Background Art

[0002] The bicycle handlebar consists of a handlebar stem, a seat tube and an angle tube, which are combined together by welding and then assembled on a bicycle frame. The traditional welding method is to first fix the handlebar stem and the seat tube, weld the joints, and then fit and fix the angle tube to the handlebar stem and the seat tube for a secondary welding combination.

[0003] The above welding method requires workers to place and fix the handlebar components many times, and needs to operate the equipment many times to control the handlebar rod, stem tube and angle tube to be in place in sequence. Whether it is mechanical loading or manual loading, there is a situation that the interruption time of welding processing is increased, the welding process flow is lengthened, and the welding efficiency is relatively low. In addition, the equipment that controls the stem tube and the angle tube to be connected to the handlebar rod respectively adopts different power sources, which requires providing multiple power equipment. This processing method is not economical. If the components are fixed in place at one time and welded at the same time, because the position of the angle tube is between the stem tube and the handlebar rod, it will cause obstruction to the welding point of the stem tube.

[0004] Therefore, in view of the above-mentioned bicycle handlebar welding, which requires multiple placement and fixation of different handlebar components, cumbersome operation, long processing intervals, low efficiency, and the use of different power equipment to control the handlebar components to be put into place in sequence, the equipment operation and use costs are high and uneconomical, a cyclic operation based on the same power source equipment can be designed. After all the handlebar components are placed at one time, the handlebar components are controlled to be put into place in sequence, and the automatic welding machine is cooperated for synchronous welding, which can shorten the processing interruption time, improve the processing efficiency and reduce the equipment operation cost. Summary of the invention

[0005] In order to overcome the problem of long welding processing interruption time and high equipment operation cost, different handlebar parts are placed and fixed multiple times, and different power equipment is used to control each handlebar part to be welded in place in sequence.

[0006] The technical solution of the present invention is: a bicycle handlebar welding device, comprising a welding platform, a bracket installed on the welding platform and a support platform installed on the bracket, the support platform is used to fix the handlebar of the bicycle handlebar, and also comprises a power component installed on the welding platform, a transmission component installed on the power component, and a linkage component installed on the transmission component, the power component is used to drive the vertical tube of the bicycle handlebar to move toward the handlebar until the vertical tube and the handlebar are tightly fitted, the linkage component is used to drive the angle tube of the bicycle handlebar to move toward the connection between the vertical tube and the handlebar until the two ends of the angle tube are tightly fitted with the handlebar and the vertical tube respectively, the transmission component is used to transmit the power output by the power component to the linkage component, when the power component drives the vertical tube close to the handlebar When welding is performed, the linkage assembly drives the angle tube away from the handlebar rod and the riser; when the welding of the riser is completed and the power assembly is separated from the riser, the linkage assembly drives the angle tube close to the handlebar rod and the riser; a positioning assembly is installed on the linkage assembly, and the positioning assembly is used to correct the position of the angle tube; a cleaning assembly and an air supply assembly are installed on the power assembly, and the cleaning assembly is used to blow and clean the bicycle handlebar; a heating module is installed on the linkage assembly, and when the power assembly drives the riser close to the handlebar rod for welding, the air supply assembly supplies air to the cleaning assembly; when the welding of the riser is completed and the power assembly is separated from the riser, the air supply assembly supplies air to the linkage assembly, the heating module is used to heat and dry the air in the linkage assembly, and the positioning assembly is used to input the gas in the linkage assembly into the angle tube.

[0007] Preferably, the power assembly includes a driving motor installed on the welding table, a bottom platform installed on the output end of the driving motor, a center axis column fixed on the bottom platform, a top platform fixed on the center axis column, a central assembly table fixed on the top platform, a vertical frame fixed on the welding table and a middle partition table installed on the vertical frame, the middle partition table is arranged between the bottom platform and the top platform, the center axis column is slidably connected to the middle partition table, the driving motor is used to drive the bottom platform, the center axis column, the top platform and the central assembly table to move vertically, and the central assembly table is used to fix the vertical pipe; when the driving motor drives the central assembly table to move up, the vertical pipe is close to the handle rod, and the corner pipe is away from the handle rod; when the driving motor drives the central assembly table to move down, the central assembly table is disengaged from the vertical pipe, and the corner pipe is close to the handle rod and the vertical pipe.

[0008] Preferably, the transmission assembly includes a side rack fixedly mounted on the top platform, a first-level diagonal support frame fixedly connected to the middle partition platform, a gear roller movably connected to the first-level diagonal support frame, a second-level diagonal support frame fixed to the first-level diagonal support frame and a sliding sleeve installed on the second-level diagonal support frame, the side rack is meshed with the corresponding gear roller, the side rack is used to drive the gear roller to rotate, the linkage assembly is slidably connected to the sliding sleeve, and the gear roller is used to drive the linkage assembly to move axially along the sliding sleeve.

[0009] Preferably, the linkage assembly includes a sliding tube slidably connected to the sliding sleeve, a U-shaped frame fixedly connected to one end of the sliding tube, a side mounting platform fixedly connected to the other end of the sliding tube, a splint installed on the side mounting platform and a bevel rack installed on the U-shaped frame, the side mounting platform is used to fix the angle tube, the splint is used to limit the diagonal tube, the bevel rack is meshed with the gear roller, a guide groove is opened on the sliding sleeve, a flange is arranged on the sliding tube, the flange is embedded in the guide groove and can slide axially along the guide groove.

[0010] Preferably, the positioning assembly includes an outer pin tube fixedly connected to the side mounting platform and an inner pin tube fixedly connected inside the outer pin tube, the outer pin tube is connected to the sliding tube, the outer pin tube is used to be inserted into the pin hole and position the angle tube, an annular cavity is formed between the outer pin tube and the inner pin tube, and the annular cavity is used to input the gas in the sliding tube into the angle tube.

[0011] Preferably, the cleaning assembly includes an air supply pipe fixedly connected to the middle partition and an air outlet plate installed on the air supply pipe, the air supply pipe is used to input the air in the air supply assembly into the air outlet plate, and the air outlet plate is used to output air to the bicycle handlebars.

[0012] Preferably, the air supply assembly includes a lower airbag cover installed between the middle partition and the bottom platform, an air outlet pipe fixedly connected to the lower airbag cover, an upper airbag cover installed between the middle partition and the top platform, and an air outlet pipe fixed to the upper airbag cover, the air outlet pipe is connected to the air supply pipe, and the air outlet pipe is connected to the sliding pipe; when the bottom platform moves up and approaches the middle partition, the lower airbag cover is compressed, and the air in the lower airbag cover passes through the air outlet pipe, the air supply pipe and the air outlet disk and is discharged; when the top platform moves down and approaches the middle partition, the upper airbag cover is compressed, and the air in the upper airbag cover passes through the air outlet pipe, the sliding pipe and the annular cavity and is discharged.

[0013] Preferably, the heating module includes a spiral heating tube installed in the sliding tube and a desiccant arranged in the sliding tube. A resistance wire is arranged inside the spiral heating tube, and the resistance wire generates heat when powered. The spiral heating tube is used to heat the air in the sliding tube, and the desiccant is used to dry the hot air.

[0014] Preferably, an oil filling assembly is installed on the welding table, and the oil filling assembly includes a grease pump installed on the welding table and an oil filling pipe with one end connected to the oil delivery end of the grease pump, the other end of the oil filling pipe is inserted into the sliding tube and connected to the inner sales pipe, the grease pump is used to pump the paste sealing grease, and the inner sales pipe is used to inject the paste sealing grease into the pin hole on the angle tube; a signal transceiver module is installed on the power assembly, and the signal transceiver module is used to send signals to the oil filling assembly, and the signal transceiver module includes a No. 1 contact switch installed on the middle partition platform and a No. 2 contact switch installed on the top platform. When the top platform moves down and approaches the middle partition platform, the No. 1 contact switch and the No. 2 contact switch are in contact and energized.

[0015] A bicycle handlebar welding method, using the bicycle handlebar welding device as described above, comprises the following steps:

[0016] S1: First, open the pin holes on the corner tubes, then place the vertical tubes on the central assembly platform, and then place the corner tubes on the corresponding side assembly platforms, insert the outer pin tubes and the inner pin tubes into the corresponding pin holes, and use the clamping plate to limit the position, so that the corner tubes are fixed on the side assembly platform, and then the handlebars are placed on the support platform and fixed;

[0017] S2: Send a start command to the control unit of the power assembly to start the drive motor in the power assembly. The drive motor first controls the bottom platform, the middle axis column, the top platform and the central assembly platform to move upward. At the same time, the side rack moves upward, driving the gear roller to rotate, thereby moving the bevel rack. The slide pipe is connected to the bevel rack through the U-shaped frame, and synchronously follows the bevel rack to move along the axial direction of the sliding sleeve. At this time, the side assembly platform carries the angle tube away from the handle bar. During the entire movement process, the lower airbag cover is compressed by the middle partition and the bottom platform, and the air inside it enters the air supply pipe through the air outlet pipe and is finally discharged through the air outlet plate. The fixed handle bar, vertical pipe and angle pipe are blown and dusted by wind. The central assembly platform carries the vertical pipe close to the handle bar until the upper end of the vertical pipe is in close contact with the handle bar. The control unit of the power assembly sends a signal and the drive motor stops running.

[0018] S3: The automatic welding machine welds the joint between the handlebar and the seat tube;

[0019] S4: After the welding in step S3 is completed, the control unit of the power assembly sends a signal to the driver again, and the driver controls the bottom platform, the middle axis column, the top platform and the central assembly platform to move downward, and the central assembly platform is disengaged from the welded vertical pipe. At the same time, the side rack moves downward, driving the gear roller to rotate in the other direction, thereby moving the bevel rack in the other direction. The slide pipe is connected to the bevel rack through the U-shaped frame and moves synchronously with the bevel rack. At this time, the side assembly platform carries the angle tube close to the handlebar and the welded vertical pipe. During the whole movement process, the upper airbag cover is moved by the middle partition platform and the top platform. The air inside the angle tube is compressed and enters the sliding tube through the air outlet pipe. This part of the air is heated by the spiral heating tube to form a hot air flow, and is finally discharged into the angle tube through the annular cavity of the outer pin tube and the inner pin tube. While heating the inside of the angle tube, the original air in the angle tube is discharged until the two ends of the angle tube are respectively in close contact with the corresponding positions on the handlebar and the vertical tube. The control unit of the power assembly sends a signal, and the drive motor stops running. At this time, the No. 1 contact switch and the No. 2 contact switch are energized and send a signal to the grease pump. The grease pump starts and injects the paste-like sealing grease into the pin hole on the angle tube;

[0020] S5: The automatic welding machine welds the joints between the handlebar and the corner tube, and between the seat tube and the corner tube;

[0021] S6: After the welding in step S5 is completed, the control unit of the power assembly sends a signal to the driver again, and the driver controls the bottom platform, the middle axis column, the top platform and the central assembly platform to move upward. At the same time, the side rack moves upward, driving the gear roller to rotate, thereby moving the bevel rack. The slide tube is connected to the bevel rack through the U-shaped frame, and synchronously follows the bevel rack to move along the axial direction of the slide sleeve. At this time, the side assembly platform is disengaged from the angle tube, and the outer pin tube and the inner pin tube are pulled out of the pin hole, and the pin hole is blocked by the paste-like sealing grease injected in S4;

[0022] S7: The automatic welding machine then welds and seals the pin hole, and then the entire welding process of the bicycle handlebar is completed.

[0023] Beneficial effects of the present invention:

[0024] 1. After the handlebar, stem and corner tube of the bicycle handlebar are placed respectively, the power assembly of a single power source is circulated to automatically control the stem and corner tubes to be in place in turn, and the automatic welding technology is used to achieve rapid welding. Workers do not need to operate different power equipment multiple times to control the handlebar components in place, which simplifies the operation steps and improves the welding efficiency. At the same time, the use of a single power source also greatly reduces the operating cost of the equipment. The way of placing the stem and corner tubes in place in turn also effectively avoids the problem of the corner tube blocking the welding of the stem;

[0025] 2. Through the cleaning component and air supply component set on the power component, the power generated by the operation of the power component is used to provide a dust blowing effect, and the surfaces of various handlebar components are blown clean to ensure the cleanliness of the welding parts. It can also clean sporadic welding slag and accelerate the cooling of the handlebar components after welding;

[0026] 3. The angle of the angle tube can be corrected by opening a pin hole on the angle tube and locking the pin hole with a positioning assembly. When the angle tube is in place, the notches at both ends of the angle tube are fully fitted with the handle bar and the riser to ensure the welding quality. No secondary correction is required by workers or machines, which improves processing efficiency.

[0027] 4. Through the hollow positioning component, air supply component and heating module, hot air can be blown into the corner tube during the positioning process of the corner tube, which has the effect of drying and accelerating the removal of air with high water content in the corner tube, so as to avoid the situation that the air with high water content remains inside for a long time after the corner tube is welded because both ends are closed, causing the inner wall of the corner tube to gradually corrode;

[0028] 5. By inputting dry hot air flow into the corner tube, the corner tube can also be preheated to avoid thermal effect cracks caused by rapid changes in local temperature on the corner tube during welding;

[0029] 6. After the angle tube is in place, the oil injection assembly can be started synchronously to cooperate with the positioning assembly to inject paste sealing grease into the pin hole. After welding is completed, the positioning assembly is disconnected from the pin hole and the water-containing air from the outside will not flow into the pin hole again, ensuring the dryness of the inside of the angle tube;

[0030] 7. The paste-like sealing grease is located at the pin hole. During the welding process, it can also absorb the heat transferred from the angle tube welding point, play a cooling role, prevent the heat from further extending and spreading to other parts of the handlebar quickly, and reduce the adverse effects of the secondary heat effect on the weld that has just been welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the bicycle handlebar welding device of the present invention;

[0032] Figure 2 Shown is a front view schematic diagram of a bicycle handlebar welding device of the present invention;

[0033] Figure 3 Shown is a front cross-sectional schematic diagram of a bicycle handlebar welding device of the present invention;

[0034] Figure 4 Shown is a side cross-sectional schematic diagram of a bicycle handlebar welding device of the present invention;

[0035] Figure 5 Shown is a schematic diagram of a bicycle handlebar of the present invention;

[0036] Figure 6 The first structural schematic diagram of the power assembly of the bicycle handlebar welding device of the present invention is shown;

[0037] Figure 7 The second structural schematic diagram of the power assembly of the bicycle handlebar welding device of the present invention is shown;

[0038] Figure 8 The bicycle handlebar welding device of the present invention is shown Figure 6 The enlarged schematic diagram at A in the middle;

[0039] Fig. 9 The bicycle handlebar welding device of the present invention is shown Figure 7 The enlarged schematic diagram of point B in the middle;

[0040] Fig.10 The first structural schematic diagram of the linkage assembly of the bicycle handlebar welding device of the present invention is shown;

[0041] Fig.11 The figure shows a second structural diagram of the linkage assembly of the bicycle handlebar welding device of the present invention;

[0042] Fig.12The bicycle handlebar welding device of the present invention is shown Fig.10 The enlarged schematic diagram at C in the middle;

[0043] Fig.13 The bicycle handlebar welding device of the present invention is shown Fig.11 The enlarged schematic diagram at D in the middle;

[0044] Fig.14 The bicycle handlebar welding device of the present invention is shown Figure 3 The enlarged schematic diagram at E in the middle;

[0045] Fig.15 The bicycle handlebar welding device of the present invention is shown Figure 4 Enlarged schematic diagram at F in the middle.

[0046] Description of the reference numerals: 1, welding platform; 2, bracket; 3, support platform; 7, guide groove; 8, flange; 401, driving machine; 402, bottom platform; 403, central axis column; 404, top platform; 405, central assembly platform; 406, middle partition platform; 407, stand; 501, side rack; 502, primary diagonal support frame; 503, gear roller; 504, secondary diagonal support frame; 505, sliding sleeve; 601, sliding pipe; 602, U-shaped frame; 603, side assembly platform; 604, clamping plate; 605, side rack; 606, middle partition platform; 607, stand; 608, side rack; 609, side rack; 610, side rack; 611, side rack; 612, side rack; 613, side rack; 614, side rack; 615, side rack; 616, side rack; 617, side rack; 618, side rack; 619, side rack; 620, side rack; 621, side rack; 622, side rack; 623, side rack; 624, side rack; 625, side rack; 626, side rack; 627, side rack; 628, side rack; 629, side rack; 630, side rack; 631, side rack; 632, side rack; 633, side rack; 634, side rack; 635, side rack; 636, side rack; 637, side rack; 638, side rack; 639, side rack; 640, side rack; 641, side rack; 642, side rack; 643, side rack; 644, side rack; 645, side rack; 646 05, oblique rack; 901, export pipe; 902, domestic sales pipe; 1001, air supply pipe; 1002, air outlet plate; 1101, lower airbag cover; 1102, air outlet pipe; 1103, upper airbag cover; 1104, air outlet pipe; 1201, spiral heating tube; 1202, desiccant; 1301, grease pump; 1302, oil filling pipe; 1401, contact switch No. 1; 1402, contact switch No. 2; 15, handlebar; 16, vertical pipe; 17, angle pipe; 18, pin hole. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] See also Figure 1-Figure 15The present invention provides an embodiment: a bicycle handlebar welding device, comprising a welding platform 1, a bracket 2 installed on the welding platform 1 and a support platform 3 installed on the bracket 2, the support platform 3 is used to fix the handlebar 15 of the bicycle handlebar, and also comprises a power component installed on the welding platform 1, a transmission component installed on the power component, and a linkage component installed on the transmission component, the power component is used to drive the riser 16 of the bicycle handlebar to move toward the handlebar 15 until the riser 16 and the handlebar 15 are tightly fitted, the linkage component is used to drive the angle tube 17 of the bicycle handlebar to move toward the connection between the riser 16 and the handlebar 15 until the two ends of the angle tube 17 are respectively tightly fitted with the handlebar 15 and the riser 16, the transmission component is used to transmit the power output by the power component to the linkage component, when the power component drives the riser 16 close to the handle When the rod 15 is welded, the linkage assembly drives the angle tube 17 away from the handlebar rod 15 and the vertical tube 16; when the vertical tube 16 is welded and the power assembly is separated from the vertical tube 16, the linkage assembly drives the angle tube 17 close to the handlebar rod 15 and the vertical tube 16; a positioning assembly is installed on the linkage assembly, and the positioning assembly is used to correct the position of the angle tube 17; a cleaning assembly and an air supply assembly are installed on the power assembly, and the cleaning assembly is used to blow and clean the bicycle handlebars; a heating module is installed on the linkage assembly, and when the power assembly drives the vertical tube 16 close to the handlebar rod 15 for welding, the air supply assembly supplies air to the cleaning assembly; when the vertical tube 16 is welded and the power assembly is separated from the vertical tube 16, the air supply assembly supplies air to the linkage assembly, the heating module is used to heat and dry the air in the linkage assembly, and the positioning assembly is used to input the gas in the linkage assembly into the angle tube 17.(The current bicycle handlebar is mainly composed of an integrally formed handlebar rod 15, a riser tube 16 and an angle tube 17, wherein the riser tube 16 is welded to the handlebar rod 15, and the angle tube 17 is welded to both sides of the angle between the riser tube 16 and the handlebar rod 15 to provide diagonal support, and the riser tube 16 and the angle tube 17 are welded in sequence. The current method is to first position the riser tube 16, weld the riser tube 16, and then assemble and position the angle tube 17, and weld the angle tube 17. There are many steps in positioning, which leads to a long interruption time in the actual welding process. In addition, multiple power sources are used to position the riser tube 16 and the angle tube 17 in sequence, and the power equipment is used a lot. The control process is complicated and uneconomical. Therefore, this solution adopts a power component with a single power source, cooperates with the use of a transmission component and a linkage component, and controls the vertical pipe 16 and the angle pipe 17 to automatically move in place in turn through the cyclic operation of the power component. There is no need to operate them separately, which simplifies the operation steps and improves the welding processing efficiency. In addition, the staged positioning of the vertical pipe 16 and the angle pipe 17 can also avoid the angle pipe 17 from hindering the welding of the vertical pipe 16 during welding, compared with the synchronous one-time positioning of the vertical pipe 16 and the angle pipe 17. The power component is cyclically operated during the welding work, and the process of one cyclic operation includes three states: State position: starting state position, intermediate state position and end state position. Before the power assembly starts, it is in the starting state position. The vertical tube 16 and the angle tube 17 are respectively placed on the power assembly and the corresponding linkage assembly. The position of the angle tube 17 is corrected by the positioning assembly. Then the handle bar 15 is placed on the support platform 3 (in actual use, the support platform 3 can be equipped with fasteners for fixing the handle bar 15, such as clamps or clamps tightened by bolts) and fixed. The power assembly is started. The power assembly first enters the intermediate state position, and the vertical tube 16 is controlled to be in place and fit with the handle bar 15. At the same time, based on the transmission assembly and the linkage assembly The angle tube 17 is driven away from the riser 16 and the handle bar 15 (to prevent the riser 16 from obstructing the movement of the welding gun during welding), and then the automatic welding machine welds the riser 16. After welding is completed, the power component continues to start, returns from the intermediate state position to the starting state position, and then further enters the terminal state position. Based on the cooperation of the transmission component and the linkage component, the power component is disengaged from the riser 16. At the same time, the angle tube 17 is driven close to the riser 16 and the handle bar 15, and then the automatic welding machine welds the angle tube 17. After welding is completed, the power component continues to start, and returns from the terminal state position to the starting state position.(The power component is in the starting state at the beginning and end of the cycle operation, that is, the process is: starting state - intermediate state - starting state - ending state - starting state. An automatic welding machine is used to set the operating program of the automatic welding machine according to the welding sequence and welding positions of the handlebar 15 and the vertical tube 16, the angle tube 17 and the handlebar 15 and the vertical tube 16, so that the automatic welding machine can complete all the welding work on the bicycle handlebar during one cycle operation of the power component. The switching time interval of each state position of the power component is set according to the welding time of each part of the handlebar 15, the vertical tube 16 and the angle tube 17.) During the entire cycle operation of the power component, it outputs power to the air supply component, and cooperates with the cleaning component and the heating module to perform wind dust removal on various parts of the bicycle handlebar. Before the welding of the angle tube 17, dry hot air is input into it to accelerate the discharge of the original air with high water content.

[0049] See also Figure 1-Figure 12 and Fig.15In this embodiment, the power assembly includes a driving machine 401 installed on the welding platform 1, a bottom platform 402 installed on the output end of the driving machine 401, a central axis column 403 fixed on the bottom platform 402, a top platform 404 fixed on the central axis column 403, a central assembly platform 405 fixed on the top platform 404, a stand 407 fixed on the welding platform 1 and a middle partition 406 installed on the stand 407, the middle partition 406 is arranged between the bottom platform 402 and the top platform 404, the central axis column 403 is slidably connected to the middle partition 406, and the driving machine 401 is used to drive the bottom platform 402, the central axis column 403, and the top platform 4 04 and the central fitting platform 405 move vertically, and the central fitting platform 405 is used to fix the vertical pipe 16; when the driving machine 401 drives the central fitting platform 405 to move upward, the vertical pipe 16 is close to the handle bar 15, and the angle tube 17 is away from the handle bar 15; when the driving machine 401 drives the central fitting platform 405 to move downward, the central fitting platform 405 is disengaged from the vertical pipe 16, and the angle tube 17 is close to the handle bar 15 and the vertical pipe 16, and the transmission assembly includes a side rack 501 fixedly installed on the top platform 404, a primary diagonal support frame 502 fixedly connected to the middle partition platform 406, a gear roller 503 movably connected to the primary diagonal support frame 502, and a gear roller 503 fixed on the primary diagonal support frame 50 2 and a sliding sleeve 505 installed on the secondary diagonal support frame 504, the side rack 501 is meshed with the corresponding gear roller 503, the side rack 501 is used to drive the gear roller 503 to rotate, the linkage component is slidably connected to the sliding sleeve 505, the gear roller 503 is used to drive the linkage component to move axially along the sliding sleeve 505, and the linkage component includes a sliding tube 601 slidably connected to the sliding sleeve 505, a U-shaped frame 602 fixedly connected to one end of the sliding tube 601, a side mounting platform 603 fixedly connected to the other end of the sliding tube 601, a clamping plate 604 installed on the side mounting platform 603 and a bevel rack 605 installed on the U-shaped frame 602 , the side assembly platform 603 is used to fix the angle tube 17, the clamping plate 604 is used to limit the position of the diagonal tube 17, the oblique rack 605 is meshed with the gear roller 503, the sliding sleeve 505 is provided with a guide groove 7, and the sliding tube 601 is provided with a flange 8, which is embedded in the guide groove 7 and can slide axially along the guide groove 7. (The power component is cyclically operated during the welding operation, and the process of one cyclic operation includes three state positions, the initial state position: that is, the distance between the bottom platform 402 and the middle partition 406 is equal to the distance between the middle partition 406 and the top platform 404; the intermediate state position: that is, the bottom platform 402 is close to the middle partition 406, and the top platform 404 is away from the middle partition 406;The final state position: that is, the bottom platform 402 is away from the middle partition table 406, and the top platform 404 is close to the middle partition table 406). When the power assembly starts to run, it is in the starting state position, and then the driving machine 401 drives the bottom platform 402, the central axis column 403, the top platform 404 and the central assembly platform 405 to move upward until the vertical pipe 16 is driven into place. As the top platform 404 moves, the side rack 501 acts on the gear roller 503 to rotate it, and the gear roller 503 transmits power to the bevel rack 605 to move it. Synchronously, the sliding tube 601 slides along the sliding sleeve 505, so that the angle tube 17 fixed on the side assembly platform 603 by the clamping plate 604 is away from the upper handle bar 15 and the vertical pipe 16. At this time, the power assembly is in the middle state position, and the automatic welding machine welds the vertical pipe 16. After the connection is completed, the driving machine 401 drives the bottom platform 402, the middle axis column 403, the top platform 404 and the central assembly platform 405 to move downward, the central assembly platform 405 is disengaged from the vertical tube 16, and the angle tube 17 approaches the handlebar 15 and the vertical tube 16 at the same time, and the power assembly successively enters the starting state position and the ending state position. In the ending state position, the angle tube 17 fits with the handlebar 15 and the vertical tube 16, and the automatic welding machine welds the angle tube 17. Finally, the driving machine 401 drives the bottom platform 402, the middle axis column 403, the top platform 404 and the central assembly platform 405 to move up again and enter the starting state position, and the side assembly platform 603 is disengaged from the angle tube 17. The welding of the bicycle handlebar is completed. After it is removed, another handlebar 15, vertical tube 16 and angle tube 17 are put in, and the above process operation is repeated. (In actual application, a rocker arm structure may be used to replace the transmission structure of the side rack 501 and the gear roller 503 in this solution, and the rocker arm converts the linear motion force into a rotational force to drive the gear roller 503 to rotate forward or reversely, thereby driving the helical rack 605 to move, thereby achieving a linkage effect of the vertical tube 16 and the angle tube 17 being in place respectively). ;

[0050] See also Figure 1-Figure 11 , Fig.13 and Figure 14-15In this embodiment, the positioning assembly includes an outer pin tube 901 fixedly connected to the side fitting platform 603 and an inner pin tube 902 fixedly connected to the outer pin tube 901. The outer pin tube 901 is connected to the slide tube 601. The outer pin tube 901 is used to be inserted into the pin hole 18 and position the angle tube 17. An annular cavity is formed between the outer pin tube 901 and the inner pin tube 902. The annular cavity is used to input the gas in the slide tube 601 into the angle tube 17. The cleaning assembly includes a fixed connection to the middle partition platform 4. 06 and an air delivery pipe 1001 and an air outlet plate 1002 installed on the air delivery pipe 1001, the air delivery pipe 1001 is used to input the air in the air supply assembly into the air outlet plate 1002, and the air outlet plate 1002 is used to output air to the bicycle handlebars. The air supply assembly includes a lower air bag cover 1101 installed between the middle partition 406 and the bottom platform 402, an air outlet pipe 1102 fixedly connected to the lower air bag cover 1101, and an air outlet plate 1102 installed between the middle partition 406 and the top platform 404. The air bag cover 1103 and the air outlet pipe 1104 fixed on the upper air bag cover 1103 are connected to the air supply pipe 1001, and the air outlet pipe 1104 is connected to the slide pipe 601; when the bottom platform 402 moves up and approaches the middle partition 406, the lower air bag cover 1101 is compressed, and the air in the lower air bag cover 1101 passes through the air outlet pipe 1102, the air supply pipe 1001 and the air outlet plate 1002 and is discharged; when the top platform 404 moves down and approaches the middle partition 406, the lower air bag cover 1101 is compressed, and the air in the lower air bag cover 1101 is discharged through the air outlet pipe 1102, the air supply pipe 1001 and the air outlet plate 1002; 6, the upper airbag cover 1103 is compressed, and the air in the upper airbag cover 1103 is discharged through the exhaust pipe 1104, the sliding tube 601 and the annular cavity, and the heating module includes a spiral heating tube 1201 installed in the sliding tube 601 and a desiccant 1202 arranged in the sliding tube 601, and a resistance wire is arranged in the spiral heating tube 1201, and the resistance wire is energized to generate heat, and the spiral heating tube 1201 is used to heat the air in the sliding tube 601, and the desiccant 1202 is used to dry the hot air.(The two ends of the angle tube 17 are respectively designed to be notches adapted to the elbow and the riser 16, so adjustments need to be made during positioning to ensure accurate fit, otherwise the weld will be relatively large, affecting the welding strength) Before welding, pin holes 18 in the opposite direction of the notches are opened on all the angle tubes 17. When the angle tube 17 is placed on the side mounting platform 603, the pin holes 18 are aligned with the outer pin tube 901, and the clamping plate 604 is used to limit the position to prevent the angle tube 17 from falling off the side mounting platform 603. At the same time, it can achieve the effect of accurate alignment and ensure that the angle tube 1 7 is in place and fully fits with the handlebar 15 and the vertical tube 16. When the driving machine 401 drives the bottom platform 402, the central axis column 403, the top platform 404 and the central assembly platform 405 to move upward and enter the intermediate state, the lower airbag cover 1101 is compressed by the middle partition 406 and the bottom platform 402, and the air inside enters the air supply pipe 1001 through the air outlet pipe 1102 and is finally discharged through the air outlet plate 1002. The handlebar 15, the vertical tube 16 and the angle tube 17 are purged and dusted, and the automatic welding machine completes the welding of the vertical tube 16. After that, the driving machine 401 drives the bottom platform 402, the middle axis column 403, the top platform 404 and the central assembly platform 405 to move downward to the end state, and the upper airbag cover 1103 is compressed by the middle partition 406 and the top platform 404, and the air inside it enters the slide pipe 601 through the outlet pipe 1104. This part of the air is heated by the spiral heating tube 1201 to form a hot air flow, and is treated by the desiccant 1202 to remove the internal moisture, and finally discharged into the angle tube 17 through the annular cavity of the outer sales tube 901 and the inner sales tube 902, While the angle tube 17 is preheated, the original air and water vapor in the angle tube 17 are discharged, thereby reducing the water content of the air inside the angle tube 17 and reducing the possibility of corrosion inside the angle tube 17. Finally, when the driving machine 401 drives the bottom platform 402, the central axis column 403, the top platform 404 and the central assembly platform 405 to move up again into the starting state position, the lower airbag cover 1101 is compressed again, and the air inside it is discharged, and the surface of the welded handlebar 15, the vertical pipe 16 and the angle tube 17 is purged, which can have a certain accelerated cooling effect.

[0051] See also Figure 1-Figure 7 , Figure 10-11 and Figure 13-Figure 15In this embodiment, an oil filling assembly is installed on the welding platform 1, and the oil filling assembly includes a grease pump 1301 installed on the welding platform 1 and an oil filling pipe 1302 at one end connected to the oil delivery end of the grease pump 1301, and the other end of the oil filling pipe 1302 is inserted into the sliding tube 601 and connected to the inner sales pipe 902. The grease pump 1301 is used to pump the paste sealing grease, and the inner sales pipe 902 is used to inject the paste sealing grease into the pin hole 18 on the angle tube 17; a signal transceiver module is installed on the power component, and the signal transceiver module is used to send a signal to the oil filling assembly. The signal transceiver module includes a No. 1 contact switch 1401 installed on the middle partition 406 and a No. 2 contact switch 1402 installed on the top platform 404. When the top platform 404 moves down and approaches the middle partition 406, the No. 1 contact switch 1401 and the No. 2 contact switch 1402 When the contact is energized and the power component enters the terminal state from the intermediate state, the top platform 404 continues to move downward until it is in contact with the middle partition 406. At this time, the No. 1 contact switch 1401 and the No. 2 contact switch 1402 are in contact and energized, and the angle tube 17 is in place at the same time, and the notches at both ends thereof are respectively in contact with the handle rod 15 and the vertical tube 16. The signal transceiver module sends a signal to the oil filling component, and the grease pump 1301 is started to inject the paste sealing grease into the pin hole 18 on the angle tube 17 through the inner pin tube 902 and the oil filling tube 1302. After welding is completed, the outer pin tube 901 and the inner pin tube 902 are pulled out of the pin hole 18, and the pin hole 18 is blocked by the paste sealing grease. Water vapor cannot flow into the angle tube 17 through the pin hole 18. During the welding process of the angle tube 17, the paste sealing grease can also absorb the heat transferred from the welding point of the angle tube 17 to play a cooling role.

[0052] See also Figure 1-Figure 15 The present invention provides a bicycle handlebar welding method, which uses the bicycle handlebar welding device as described above, and comprises the following steps:

[0053] S1: First, the pin hole 18 is opened on the corner tube 17, and then the vertical tube 16 is placed on the central assembly platform 405, and then the corner tubes 17 are respectively placed on the corresponding side assembly platforms 603, and the outer pin tube 901 and the inner pin tube 902 are inserted into the corresponding pin holes 18, and the clamping plate 604 is used to limit the position, so that the corner tube 17 is fixed on the side assembly platform 603, and then the handle bar 15 is placed on the support platform 3 and fixed;

[0054] S2: Send a start command to the control unit of the power assembly to start the drive motor 401 in the power assembly. The drive motor 401 first controls the bottom platform 402, the middle shaft column 403, the top platform 404 and the central assembly platform 405 to move upward. At the same time, the side rack 501 moves upward, driving the gear roller 503 to rotate, thereby moving the bevel rack 605. The slide tube 601 is connected to the bevel rack 605 through the U-shaped frame 602, and synchronously follows the bevel rack 605 to move along the axial direction of the slide sleeve 505. At this time, the side assembly platform 603 carries the angle tube 17 away from the handle bar 15. During the whole movement process, the lower airbag cover 1101 is moved by the middle partition platform 406. The air in the bottom platform 402 is compressed, and the air in the bottom platform 402 enters the air supply pipe 1001 through the air outlet pipe 1102, and is finally discharged through the air outlet plate 1002 (there is dust in the welding workshop, which is easy to adhere to the welding part of the workpiece, affecting welding. Manual cleaning is troublesome. This method can achieve a certain automatic cleaning effect before welding). The fixed handle bar 15, vertical pipe 16 and angle pipe 17 are blown and dusted by wind. The central assembly platform 405 carries the vertical pipe 16 close to the handle bar 15 until the upper end of the vertical pipe 16 is in close contact with the handle bar 15. The control unit of the power assembly sends a signal, and the drive machine 401 stops running.

[0055] S3: The automatic welding machine welds the joint between the handlebar 15 and the seat tube 16;

[0056] S4: After the welding in step S3 is completed, the control unit of the power assembly sends a signal to the driving machine 401 again, and the driving machine 401 controls the bottom platform 402, the central axis column 403, the top platform 404 and the central assembly platform 405 to move downward, and the central assembly platform 405 is disengaged from the welded vertical pipe 16. At the same time, the side rack 501 moves downward, driving the gear roller 503 to rotate in the other direction, thereby making the bevel rack 605 move in the other direction. The slide tube 601 is connected to the bevel rack 605 through the U-shaped frame 602, and moves synchronously with the bevel rack 605. At this time, the side assembly platform 603 carries the angle tube 17 close to the handlebar 15 and the welded vertical pipe 16. During the entire movement process, the upper airbag cover 1103 is compressed by the middle partition platform 406 and the top platform 404, and the air therein enters the slide tube 601 through the exhaust pipe 1104. This part of the air is heated by the spiral heating tube 1201 to form a heat The air flow, after being treated by the desiccant 1202 for moisture absorption, is finally discharged into the angle tube 17 through the annular cavity of the outer sales tube 901 and the inner sales tube 902. While heating the interior of the angle tube 17, the original air in the angle tube 17 is discharged (after the angle tube 17 is welded, the notches at both ends are closed, and the internal air will remain for a long time. If the amount of water vapor is large, it is easy to corrode the material of the angle tube 17), until the two ends of the angle tube 17 are respectively in close contact with the corresponding positions on the handlebar 15 and the vertical tube 16, the control unit of the power component sends a signal, and the drive motor 401 stops running. At this time, the No. 1 contact switch 1401 and the No. 2 contact switch 1402 are in contact and energized and send a signal to the grease pump 1301. The grease pump 1301 starts and injects the paste-like sealing grease into the pin hole 18 on the angle tube 17 (the injection amount is preset as needed, usually according to the inner diameter parameter of the angle tube 17);

[0057] S5: The automatic welding machine welds the joints between the handlebar 15 and the angle tube 17, and the joints between the stand tube 16 and the angle tube 17;

[0058] S6: After the welding in step S5 is completed, the control unit of the power assembly sends a signal to the driving machine 401 again, and the driving machine 401 controls the bottom platform 402, the middle axis column 403, the top platform 404 and the central assembly platform 405 to move upward. At the same time, the side rack 501 moves upward, driving the gear roller 503 to rotate, thereby moving the bevel rack 605. The sliding tube 601 is connected to the bevel rack 605 through the U-shaped frame 602, and synchronously follows the bevel rack 605 to move axially along the sliding sleeve 505. At this time, the side assembly platform 603 is disengaged from the angle tube 17, and the outer pin tube 901 and the inner pin tube 902 are pulled out from the pin hole 18, and the pin hole 18 is blocked by the paste-like sealing grease injected in S4;

[0059] S7: The automatic welding machine welds and seals the pin hole 18, and then the entire welding process of the bicycle handlebar is completed.

Claims

1. A bicycle handlebar welding device, comprising a welding platform (1), a bracket (2) mounted on the welding platform (1), and a support platform (3) mounted on the bracket (2), wherein the support platform (3) is used to fix a handlebar (15) of a bicycle handlebar; characterized in that: The invention also comprises a power assembly installed on the welding platform (1), a transmission assembly installed on the power assembly, and a linkage assembly installed on the transmission assembly. The power assembly is used to drive the vertical tube (16) of the bicycle handlebar to move toward the handlebar (15) until the vertical tube (16) and the handlebar (15) are tightly fitted. The linkage assembly is used to drive the angle tube (17) of the bicycle handlebar to move toward the connection between the vertical tube (16) and the handlebar (15) until the two ends of the angle tube (17) are tightly fitted with the handlebar (15) and the vertical tube (16) respectively. The transmission assembly is used to transmit the power output by the power assembly to the linkage assembly. When the power assembly drives the vertical tube (16) to approach the handlebar (15) for welding, the linkage assembly drives the angle tube (17) away from the handlebar (15) and the vertical tube (16); when the vertical tube (16) is welded and the power assembly is separated from the vertical tube (16), the linkage assembly drives the angle tube (17) to approach the handlebar (15) and the vertical tube (16); The linkage assembly is provided with a positioning assembly, the positioning assembly is used to correct the position of the angle tube (17), the power assembly is provided with a cleaning assembly and an air supply assembly, the cleaning assembly is used to blow and clean the bicycle handlebar, the linkage assembly is provided with a heating module, when the power assembly drives the vertical tube (16) to approach the handlebar rod (15) for welding, the air supply assembly supplies air to the cleaning assembly; when the vertical tube (16) is welded and the power assembly is separated from the vertical tube (16), the air supply assembly supplies air to the linkage assembly, the heating module is used to heat and dry the air in the linkage assembly, and the positioning assembly is used to input the gas in the linkage assembly into the angle tube (17).

2. A bicycle handlebar welding device according to claim 1, characterized in that: The power assembly comprises a driving machine (401) installed on the welding platform (1), a bottom platform (402) installed on the output end of the driving machine (401), a central axis column (403) fixed on the bottom platform (402), a top platform (404) fixed on the central axis column (403), a central assembly platform (405) fixed on the top platform (404), a stand (407) fixed on the welding platform (1), and a middle partition platform (406) installed on the stand (407), wherein the middle partition platform (406) is arranged between the bottom platform (402) and the top platform (404), the central axis column (403) is slidably connected to the middle partition platform (406), the driving machine (401) is used to drive the bottom platform (402), the central axis column (403), the top platform (404) and the central assembly platform (405) to move vertically, and the central assembly platform (405) is used to fix the stand pipe (16); When the driving machine (401) drives the central fitting platform (405) to move upward, the vertical tube (16) approaches the handlebar (15), and the angle tube (17) moves away from the handlebar (15); when the driving machine (401) drives the central fitting platform (405) to move downward, the central fitting platform (405) is disengaged from the vertical tube (16), and the angle tube (17) approaches the handlebar (15) and the vertical tube (16).

3. A bicycle handlebar welding device according to claim 2, characterized in that: The transmission assembly comprises a side rack (501) fixedly mounted on the top platform (404), a primary diagonal support frame (502) fixedly connected to the middle partition (406), a gear roller (503) movably connected to the primary diagonal support frame (502), a secondary diagonal support frame (504) fixed to the primary diagonal support frame (502), and a sliding sleeve (505) mounted on the secondary diagonal support frame (504); the side rack (501) is meshed with the corresponding gear roller (503); the side rack (501) is used to drive the gear roller (503) to rotate; the linkage assembly is slidably connected to the sliding sleeve (505); the gear roller (503) is used to drive the linkage assembly to move axially along the sliding sleeve (505).

4. A bicycle handlebar welding device according to claim 3, characterized in that: The linkage assembly comprises a sliding tube (601) slidably connected to a sliding sleeve (505), a U-shaped frame (602) fixedly connected to one end of the sliding tube (601), a side mounting platform (603) fixedly connected to the other end of the sliding tube (601), a clamping plate (604) installed on the side mounting platform (603), and an oblique rack (605) installed on the U-shaped frame (602); the side mounting platform (603) is used to fix the angle tube (17); the clamping plate (604) is used to limit the position of the angle tube (17); the oblique rack (605) is meshed with the tooth roller (503); a guide groove (7) is provided on the sliding sleeve (505); a flange (8) is provided on the sliding tube (601); the flange (8) is embedded in the guide groove (7) and can slide axially along the guide groove (7).

5. A bicycle handlebar welding device according to claim 4, characterized in that: The positioning assembly comprises an outer sales tube (901) fixedly connected to a side mounting platform (603) and an inner sales tube (902) fixedly connected inside the outer sales tube (901); the outer sales tube (901) is connected to the slide tube (601); the outer sales tube (901) is used to be inserted into the pin hole (18) and position the angle tube (17); an annular cavity is formed between the outer sales tube (901) and the inner sales tube (902); the annular cavity is used to input the gas in the slide tube (601) into the angle tube (17).

6. A bicycle handlebar welding device according to claim 5, characterized in that: The cleaning component comprises an air supply pipe (1001) fixedly connected to the middle partition (406) and an air outlet plate (1002) installed on the air supply pipe (1001), wherein the air supply pipe (1001) is used to input air in the air supply component into the air outlet plate (1002), and the air outlet plate (1002) is used to output air to the handlebars of the bicycle.

7. A bicycle handlebar welding device according to claim 6, characterized in that: The air supply assembly comprises a lower airbag cover (1101) installed between the middle partition (406) and the bottom platform (402), an air outlet pipe (1102) fixedly connected to the lower airbag cover (1101), an upper airbag cover (1103) installed between the middle partition (406) and the top platform (404), and an air outlet pipe (1104) fixed to the upper airbag cover (1103), the air outlet pipe (1102) is connected to the air supply pipe (1001), and the air outlet pipe (1104) is connected to the slide pipe (601); When the bottom platform (402) moves upward and approaches the middle partition (406), the lower airbag cover (1101) is compressed, and the air in the lower airbag cover (1101) is discharged through the air outlet pipe (1102), the air supply pipe (1001) and the air outlet plate (1002); when the top platform (404) moves downward and approaches the middle partition (406), the upper airbag cover (1103) is compressed, and the air in the upper airbag cover (1103) is discharged through the air outlet pipe (1104), the sliding pipe (601) and the annular cavity.

8. A bicycle handlebar welding device according to claim 7, characterized in that: The heating module comprises a spiral heating tube (1201) installed in the sliding tube (601) and a desiccant (1202) arranged in the sliding tube (601). A resistance wire is arranged inside the spiral heating tube (1201). The resistance wire generates heat when electricity is supplied. The spiral heating tube (1201) is used to heat the air in the sliding tube (601), and the desiccant (1202) is used to dry the hot air.

9. A bicycle handlebar welding device according to claim 8, characterized in that: An oil injection assembly is installed on the welding platform (1), and the oil injection assembly comprises a grease pump (1301) installed on the welding platform (1) and an oil injection pipe (1302) one end of which is connected to the oil delivery end of the grease pump (1301); the other end of the oil injection pipe (1302) is inserted into the sliding pipe (601) and connected to the inner sales pipe (902); the grease pump (1301) is used to pump the paste sealing grease, and the inner sales pipe (902) is used to inject the paste sealing grease into the pin hole (18) on the angle pipe (17); A signal transceiver module is installed on the power component, and the signal transceiver module is used to send signals to the oil injection component. The signal transceiver module includes a No. 1 contact switch (1401) installed on the middle partition (406) and a No. 2 contact switch (1402) installed on the top platform (404). When the top platform (404) moves down and approaches the middle partition (406), the No. 1 contact switch (1401) and the No. 2 contact switch (1402) are in contact and energized.

10. A bicycle handlebar welding method, characterized in that: The bicycle handlebar welding device according to claim 9 comprises the following steps: S1: First, the pin hole (18) of the corner tube (17) is opened, and then the vertical tube (16) is placed on the central assembly platform (405), and then the corner tubes (17) are respectively placed on the corresponding side assembly platforms (603), and the outer pin tube (901) and the inner pin tube (902) are inserted into the corresponding pin holes (18), and the clamping plate (604) is used to limit the position, so that the corner tube (17) is fixed on the side assembly platform (603), and then the handle bar (15) is placed on the support platform (3) and fixed; S2: A start command is issued to the control unit of the power assembly to start the driving machine (401) in the power assembly. The driving machine (401) first controls the bottom platform (402), the middle axis column (403), the top platform (404) and the central assembly platform (405) to move upward. At the same time, the side rack (501) moves upward, driving the gear roller (503) to rotate, thereby moving the bevel rack (605). The sliding tube (601) is connected to the bevel rack (605) through the U-shaped frame (602), and synchronously follows the bevel rack (605) to move axially along the sliding sleeve (505). At this time, the side assembly platform (603) carries the angle tube (17). Away from the handle bar (15), during the entire movement process, the lower airbag cover (1101) is compressed by the middle partition (406) and the bottom platform (402), and the air therein enters the air supply pipe (1001) through the air outlet pipe (1102), and is finally discharged through the air outlet plate (1002), and the fixed handle bar (15), the vertical pipe (16) and the corner pipe (17) are blown and dusted by wind. The central assembly platform (405) carries the vertical pipe (16) close to the handle bar (15) until the upper end of the vertical pipe (16) is in close contact with the handle bar (15), and the control unit of the power assembly sends a signal, and the driving machine (401) stops running; S3: The automatic welding machine welds the joint between the handlebar (15) and the stand pipe (16); S4: After the welding in step S3 is completed, the control unit of the power assembly sends a signal to the driving machine (401) again, and the driving machine (401) controls the bottom platform (402), the middle axis column (403), the top platform (404) and the central assembly platform (405) to move downward, and the central assembly platform (405) is disengaged from the welded vertical pipe (16). At the same time, the side rack (501) moves downward, driving the gear roller (503) to rotate in the other direction, thereby causing the oblique rack (605) to move in the other direction. The sliding tube (601) is connected to the oblique rack (605) through the U-shaped frame (602), and moves synchronously with the oblique rack (605). At this time, the side assembly platform (603) carries the angle tube (17) close to the handlebar (15) and the welded vertical pipe (16). During the whole movement process, the upper airbag cover (1103) is moved by the middle partition platform (406) and the top platform (404). ) is compressed, and the air inside it enters the sliding tube (601) through the air outlet pipe (1104). This part of the air is heated by the spiral heating tube (1201) to form a hot air flow. After being treated with moisture absorption by the desiccant (1202), it is finally discharged into the angle tube (17) through the annular cavity of the outer sales tube (901) and the inner sales tube (902). While heating the inside of the angle tube (17), the original air in the angle tube (17) is discharged until the two ends of the angle tube (17) are respectively in close contact with the corresponding positions on the handle bar (15) and the vertical tube (16). The control unit of the power component sends a signal, and the driving machine (401) stops running. At this time, the No. 1 contact switch (1401) and the No. 2 contact switch (1402) are in contact and energized and send a signal to the grease pump (1301). The grease pump (1301) starts to inject the paste-like sealing grease into the pin hole (18) on the angle tube (17); S5: The automatic welding machine welds the joints between the handlebar (15) and the corner tube (17), and the joints between the vertical tube (16) and the corner tube (17); S6: After the welding in step S5 is completed, the control unit of the power assembly sends a signal to the driving machine (401) again, and the driving machine (401) controls the bottom platform (402), the middle axis column (403), the top platform (404) and the central assembly platform (405) to move upward. At the same time, the side rack (501) moves upward, driving the gear roller (503) to rotate, thereby moving the bevel rack (605). The sliding tube (601) is connected to the bevel rack (605) through the U-shaped frame (602), and synchronously follows the bevel rack (605) to move axially along the sliding sleeve (505). At this time, the side assembly platform (603) is disengaged from the angle tube (17), and the outer pin tube (901) and the inner pin tube (902) are pulled out of the pin hole (18), and the pin hole (18) is blocked by the paste-like sealing grease injected in S4; S7: The automatic welding machine welds and seals the pin hole (18), and then the entire welding process of the bicycle handlebar is completed.

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