A fully automatic tooling cycle welding production line for bicycle frames

Abstract

The present invention discloses a fully automatic tooling cycle welding production line for a bicycle frame, comprising an annular conveyor line, wherein the annular conveyor line comprises a conveyor platform, wherein a plurality of workstations are arranged on the top surface of the conveyor platform, and a clamp mechanism is arranged on each of the workstations; the clamp mechanism of the present invention can fix the upper tube, the lower tube, the head tube, the middle tube, and the fork of the bicycle frame respectively, and can adjust the position of each workpiece independently, so that the welding points of each workpiece can be tightly connected, and the welding operation can be directly carried out without using a handling robot to carry each workpiece in turn and then weld them, which is more efficient and saves the cost of the handling robot; in the welding assembly of the present invention, the action of the arc power block enables the sleeve to move in an arc path, and when welding is performed on a position where the welding point is in an arc state, the high-frequency welding head performs an arc-shaped contouring movement, so that the arc of the welding point is consistent with that of the frame pipe, thereby improving the welding effect.

Description

Technical Field

[0001] The invention relates to the technical field of bicycles, in particular to a full-automatic tooling cycle welding production line for a bicycle frame. Background Art

[0002] As the skeleton of the entire bicycle, the frame determines and affects the correctness and comfort of the riding posture to the greatest extent. The frame components are the basic structure of the bicycle, and are also the skeleton and main body of the bicycle. Therefore, the welding work of the bicycle frame is extremely important and affects the value of the frame. The bicycle frame is composed of a head tube, an upper tube, a down tube, a middle tube, a fork and a seat fork. One end of the upper tube and the down tube are welded and fixed to the side of the head tube, the other end of the upper tube is welded to the upper part of the middle tube, and the other end of the down tube is welded to the five-way at the bottom of the middle tube. The seat fork is connected to the end of the fork, mostly in one piece. The end of the fork is welded to the five-way at the bottom of the middle tube, and the end of the seat fork is welded to the upper part of the middle tube. There are many welding positions for bicycle frames, and the welding work is complicated. Therefore, traditional welding lines mostly use manual welding, but there are corresponding problems such as low production efficiency and The problem of high production cost; in this regard, the Chinese utility model patent with authorization announcement number CN208977118U discloses a bicycle frame fully automatic tooling cycle welding production line, including a circular table, a first welding robot arranged on the left side of the circular table, a second welding robot arranged on the right side of the circular table, a tooling trolley arranged above the circular table, and a handling robot arranged behind the circular table, the top surface of the circular table is provided with a circular trolley track, the inner side of the circular table is provided with a dry ice machine, the two sides of the dry ice machine are provided with delivery pipes, the delivery pipe is provided with a nozzle, and the nozzle is provided with a temperature control switch; however, this bicycle frame welding production line has the following defects:

[0003] There are many welding points on a bicycle frame, and the tooling fixtures generally only fix the upper tube and the lower tube. The workpieces to be welded are grabbed by a handling robot and welded one by one. This has low welding efficiency and requires the use of a handling robot, which is costly and not conducive to use on the production line. The welding positions of bicycle frames are mostly arc surfaces, and it is difficult for the welding robot arm to fit the arc surface position well. Adjusting the position through multiple axes will also cause the weld to be not smooth enough, and the effect of manual welding cannot be achieved, reducing the value of the frame.

[0004] Therefore, we propose a bicycle frame fully automatic tooling cycle welding production line to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a fully automatic tooling cycle welding production line for a bicycle frame to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic tooling cycle welding production line for a bicycle frame, comprising an annular conveyor line, the annular conveyor line comprising a conveyor table, a plurality of workstations are arranged on the top surface of the conveyor table, a fixture mechanism is arranged on each of the workstations, a worktable is horizontally fixedly connected to the side wall of the conveyor table, a grinding mechanism, a spot welding mechanism, and a high-frequency welding mechanism are arranged on the worktable, and the spot welding mechanism is located between the grinding mechanism and the high-frequency welding mechanism;

[0007] The clamp mechanism comprises a strip-shaped platform, and a head tube fixing assembly, an upper tube and lower tube fixing assembly, a middle tube fixing assembly, and a flat fork and upright fork fixing assembly are sequentially arranged on the top surface of the strip-shaped platform from one end to the other end. The head tube fixing assembly comprises a strip-shaped plate fixedly connected to the top surface of the end of the clamp mechanism, and a vertical rod is horizontally slidably arranged on the top surface of the strip-shaped plate. A vertical block is vertically fixedly connected to one side of the top end of the vertical rod, and an arc-shaped fixed clamp block is fixedly connected to the top end of the vertical block. A first cylinder is horizontally fixedly connected to the upper part of the vertical block, and an output end of the first cylinder is fixedly connected to a bottom block, and an arc-shaped fixed clamp block is fixedly connected to the top end of the bottom block. The upper tube and lower tube fixing assembly comprises a vertical frame fixedly connected to the top surface of the strip table, a through slot is provided on the vertical frame, the upper position of the through slot is vertically slidably connected to the first clamping cylinder, the lower position of the through slot is vertically slidably connected to the second clamping cylinder, the middle tube fixing assembly comprises a column fixedly connected to the top surface of the strip table, the side wall of the column is vertically slidably provided with a third clamping cylinder, the horizontal fork and vertical fork fixing assembly comprises a horizontal plate fixedly connected to the top surface of the strip table, the top surface of the horizontal plate is horizontally slidably provided with two fourth clamping cylinders;

[0008] The high-frequency welding mechanism includes a dual-axis movable seat and a third six-axis robotic arm. A welding assembly is arranged on the output end of the third six-axis robotic arm. The welding assembly includes a plate body fixedly connected to the output end of the third six-axis robotic arm. A sleeve is slidably arranged on the side wall of the plate body. A high-frequency welding head is fixedly sleeved on the sleeve. An arc-shaped power groove is arranged on the side wall of the plate body. An arc-shaped power block is slidably connected in the arc-shaped power groove. The arc-shaped power block is fixedly connected to the side wall of the sleeve. A top slide groove is arranged inside the plate body at the top surface of the arc-shaped power groove. An arc-shaped gear plate is fixedly connected to the top surface of the arc-shaped power block. The arc-shaped gear plate is located in the top slide groove. Multiple gears are evenly rotated and connected in the top slide groove. The arc-shaped gear plate meshes and connects multiple gears at any position.

[0009] Preferably, two synchronous pulleys are fixedly connected to each of the gear shafts, and the first synchronous belt is sleeved on the synchronous pulleys on the two adjacent gears. The plate body is fixedly connected to the fifth servo reduction motor on the side away from the sleeve, and the shaft end of the fifth servo reduction motor is fixedly connected to one of the gear shafts. A guide arc groove is provided on the plate body close to the sleeve, and a guide arc block is slidably connected in the guide arc groove, and the guide arc block is fixedly connected to the side wall of the sleeve. The width of the arc power groove close to the sleeve side is smaller than the width on the other side.

[0010] Preferably, the top surfaces at both ends of the conveyor platform are rotatably connected to two driving pulleys, and the two driving pulleys are sleeved with conveyor belts. The top surface of the conveyor platform is located at the outer side of the conveyor belt and is fixedly connected to an annular track. The work station is arranged on the annular track, and the bottom surface of the work station is rotatably connected to multiple guide wheels, and the multiple guide wheels are in rolling contact with both sides of the annular track. The side wall of the work station is fixedly connected to a connecting plate, and the connecting plate is fixedly connected to the side wall of the conveyor belt. The top surface of the work station is fixedly embedded with a disc motor, and the top end of the disc motor shaft end is fixedly connected to the center of the bottom surface of the strip table plate, the bottom surface of the conveyor platform is fixedly connected to multiple legs, and the bottom surface of the conveyor platform is fixedly connected to a driving servo reduction motor, and the shaft end of the driving servo reduction motor is fixedly connected to one of the driving pulley shafts.

[0011] Preferably, a top groove is provided on the top surface of the strip plate, a sliding block is horizontally slidably connected in the top groove, the bottom end of the vertical rod is fixedly connected to the top surface of the sliding block, the top surface of one end of the strip plate is fixedly connected to the second cylinder, and the output end of the second cylinder is fixedly connected to the side wall of the bottom end of the vertical rod.

[0012] Preferably, two upper side grooves are provided on both sides of the upper position of the through groove, and an upper side block is vertically slidably connected in each of the upper side grooves, and the upper side block is fixedly connected to the side wall of the first clamping jaw cylinder; two lower side grooves are provided on both sides of the lower position of the through groove, and a lower side block is vertically slidably connected in each of the lower side grooves, and the lower side block is fixedly connected to the side wall of the second clamping jaw cylinder; two vertical shafts are vertically rotatably connected inside the two sides of the vertical frame, and the vertical shafts pass through the upper side grooves and the lower side grooves, the vertical shaft is located in the internal position of the upper side groove and is fixedly sleeved with a left-handed screw rod, and the vertical shaft is located in the internal position of the lower side groove and is fixedly sleeved with a right-handed screw rod, an upper threaded sleeve is fixedly connected to the upper side block, and a lower threaded sleeve is fixedly connected to the lower side block, the left-handed screw rod is threadedly connected to the upper threaded sleeve, and the right-handed screw rod is threadedly connected to the lower threaded sleeve.

[0013] Preferably, the center of the top surface of the vertical frame is fixedly connected to the sixth servo reduction motor, the shaft end of the sixth servo reduction motor is located inside the top surface of the vertical frame and fixedly connected to two driving pulleys, the top end of the vertical shaft is located inside the top surface of the vertical frame and fixedly connected to the driving pulley, and the second synchronous belt is sleeved on the driving pulley and the driven pulley.

[0014] Preferably, a first sliding groove is provided on the side wall of the column, a first slider is vertically slidably connected in the first sliding groove, the first slider is fixedly connected to the side wall of the third clamping cylinder, the first sliding groove is vertically rotatably connected to the first screw rod, the first slider is fixedly connected to the first threaded sleeve, the first screw rod is threadedly connected to the first threaded sleeve, the top end of the column is fixedly connected to the first servo reduction motor, and the rotating shaft end of the first servo reduction motor is fixedly connected to the end of the first screw rod.

[0015] Preferably, a second sliding groove is opened on the top surface of the horizontal plate, the second sliding groove is horizontally slidingly connected to the second slider, the two fourth clamping jaw cylinders are fixedly connected to the top surface of the second slider, the second sliding groove is horizontally rotatingly connected to the second screw rod, the second slider is fixedly connected to the second threaded sleeve, the second screw rod is threadedly connected to the second threaded sleeve, the end of the horizontal plate is fixedly connected to the second servo reduction motor, and the shaft end of the second servo reduction motor is fixedly connected to the end of the second screw rod.

[0016] Preferably, the grinding mechanism includes a first six-axis robotic arm fixedly connected to the top surface of the workbench, the output end of the first six-axis robotic arm is fixedly connected to a high-speed motor, the shaft end of the high-speed motor is fixedly connected to a grinding disk, and the spot welding mechanism includes a second six-axis robotic arm fixedly connected to the top surface of the workbench, and the output end of the second six-axis robotic arm is fixedly connected to a spot welding head.

[0017] Preferably, the dual-axis movable seat includes a base plate, the top surface of the base plate is horizontally slidably provided with a transverse plate, the top surface of the base plate is provided with a third sliding groove, the third sliding groove is horizontally slidably connected to the third sliding block, the third sliding block is fixedly connected to the bottom surface of the transverse sliding plate, the third sliding groove is horizontally slidably connected to the third sliding block, the third sliding block is fixedly connected to the bottom surface of the transverse sliding plate, the third sliding groove is horizontally slidably connected to the third screw rod, the third sliding block is fixedly connected to the third threaded sleeve, the third sliding block is threadedly connected to the third threaded sleeve, the end of the base plate is fixedly connected to the third servo reduction motor, and the rotating shaft end of the third servo reduction motor is fixedly connected to the end of the third screw rod. The top surface of the transverse sliding plate is provided with a fourth sliding groove, the fourth sliding groove is horizontally slidably connected to the fourth sliding block, the third six-axis robot arm is fixedly connected to the top surface of the fourth sliding block, the fourth sliding groove is horizontally slidably connected to the fourth screw rod, the fourth sliding block is fixedly connected to the fourth threaded sleeve, the fourth screw rod is threadedly connected to the fourth threaded sleeve, the end of the transverse sliding plate is fixedly connected to the fourth servo reduction motor, and the rotating shaft end of the fourth servo reduction motor is fixedly connected to the fourth screw rod.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The clamp mechanism of the present invention can fix the upper tube, down tube, head tube, middle tube and fork of the bicycle frame respectively, and can adjust the position of each workpiece independently, so that the welding points of each workpiece can be tightly connected, and the welding operation can be directly carried out without using a handling robot to carry each workpiece in turn and then weld them, which is more efficient and saves the cost of the handling robot; in the welding assembly of the present invention, the arc power block is used to enable the sleeve to move in an arc path. When welding is performed on a position where the welding point is in an arc state, the high-frequency welding head performs an arc-shaped contouring movement, so that the arc of the welding point is consistent with that of the frame pipe, thereby improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure in the first and second embodiments of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the clamp mechanism in the first and second embodiments of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the head pipe fixing assembly in the first and second embodiments of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-section structure of the upper tube and lower tube fixing assembly in the first and second embodiments of the present invention;

[0024] Figure 5 It is a schematic diagram of the cross-section structure of the middle tube fixing assembly in the first and second embodiments of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the horizontal fork and vertical fork fixing assembly in the first and second embodiments of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the high-frequency welding mechanism in the first and second embodiments of the present invention;

[0027] Figure 8 It is a schematic diagram of the structure of the welding assembly in the first and second embodiments of the present invention;

[0028] Fig. 9 It is a schematic diagram of the cross-section structure of the welding assembly in the first and second embodiments of the present invention;

[0029] Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at A in the middle

[0030] Fig.11 It is a schematic diagram of the cross-section structure of the dual-axis movable seat in the first and second embodiments of the present invention.

[0031] In the figure: 1, annular conveyor line; 2, fixture mechanism; 3, grinding mechanism; 4, spot welding mechanism; 5, high-frequency welding mechanism; 11, conveyor table; 12, work station table; 13, workbench; 14, driving pulley; 15, conveyor belt; 16, annular track; 17, connecting plate; 18, guide wheel; 19, disc motor; 110, driving servo reduction motor; 111, outrigger; 21, strip table; 22, head tube fixing assembly; 23, upper tube and lower tube fixing assembly; 24, middle tube fixing assembly; 25, flat fork and upright fork fixing assembly; 221, strip plate; 222, upright pole; 223, upright block; 224, arc-shaped fixed clamp block; 225, arc-shaped dynamic Clamping block; 226, first cylinder; 227, bottom block; 228, top groove; 229, sliding block; 2210, second cylinder; 231, vertical frame; 232, through groove; 233, first clamping jaw cylinder; 234, second clamping jaw cylinder; 235, upper side groove; 236, upper side block; 237, lower side groove; 238, lower side block; 239, vertical shaft; 2310, left-hand screw rod; 2311, right-hand screw rod; 2312, upper threaded sleeve; 2313, lower threaded sleeve; 2314, sixth servo reduction motor; 2315, driving pulley; 2316, driven pulley; 2317, second synchronous belt; 241, column; 242, third clamping jaw Claw cylinder; 243, first slide; 244, first slider; 245, first screw rod; 246, first threaded sleeve; 247, first servo reduction motor; 251, cross plate; 252, second slide; 253, second slider; 254, second screw rod; 255, second threaded sleeve; 256, fourth gripper cylinder; 257, second servo reduction motor; 31, first six-axis robot; 32, high-speed motor; 33, grinding disc; 41, second six-axis robot; 42, spot welding head; 51, dual-axis moving seat; 52, third six-axis robot; 53, welding assembly; 511, bottom plate; 512, transverse plate; 513, third slide; 514, the third slider; 515, the third screw rod; 516, the third threaded sleeve; 517, the third servo reduction motor; 518, the fourth slide groove; 519, the fourth slider; 5110, the fourth screw rod; 5111, the fourth threaded sleeve; 5112, the fourth servo reduction motor; 531, the plate; 532, the sleeve; 533, the high-frequency welding head; 534, the arc-shaped power groove; 535, the arc-shaped power block; 536, the top slide groove; 537, the arc-shaped tooth plate; 538, the gear; 539, the synchronous pulley; 5310, the first synchronous belt; 5311, the guide arc-shaped groove; 5312, the guide arc-shaped block; 5313, the fifth servo reduction motor. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1-9 The present invention provides a technical solution: a fully automatic tooling cycle welding production line for a bicycle frame, comprising a ring conveyor line 1, the ring conveyor line 1 comprising a conveyor platform 11, a plurality of workstations 12 are arranged on the top surface of the conveyor platform 11, a fixture mechanism 2 is arranged on each workstation 12, a worktable 13 is horizontally fixedly connected to the side wall of the conveyor platform 11, a grinding mechanism 3, a spot welding mechanism 4, and a high-frequency welding mechanism 5 are arranged on the worktable 13, and the spot welding mechanism 4 is located between the grinding mechanism 3 and the high-frequency welding mechanism 5;

[0034] The clamp mechanism 2 includes a strip-shaped table 21, and a head tube fixing component 22, an upper tube and lower tube fixing component 23, a middle tube fixing component 24, and a flat fork and upright fork fixing component 25 are sequentially arranged on the top surface of the strip-shaped table 21 from one end to the other end. The head tube fixing component 22 includes a strip-shaped plate 221 fixedly connected to the top surface of the end of the clamp mechanism 2, and a vertical rod 222 is horizontally slidably arranged on the top surface of the strip-shaped plate 221. A vertical block 223 is vertically fixedly connected to one side of the top end of the vertical rod 222, and an arc-shaped fixed clamping block 224 is fixedly connected to the top end of the vertical block 223. A first cylinder 226 is horizontally fixedly connected to the vertical block 223, and an output end of the first cylinder 226 is fixedly connected to a bottom block 227, and a top end of the bottom block 227 is fixedly connected to an arc-shaped movable clamping block 225. The upper tube and lower tube fixing component 23 includes a vertical frame 231 fixedly connected to the top surface of the strip-shaped table 21, and a through slot 232 is provided on the vertical frame 231. The upper position of the through slot 232 is vertically fixed to the vertical block 224. The first clamping claw cylinder 233 is connected by straight sliding, and the lower position of the through slot 232 is vertically connected to the second clamping claw cylinder 234 by sliding. The middle tube fixing assembly 24 includes a column 241 vertically fixed to the top surface of the strip table 21, and the side wall of the column 241 is vertically slidably provided with a third clamping claw cylinder 242. The horizontal fork and vertical fork fixing assembly 25 includes a horizontal plate 251 fixed to the top surface of the strip table 21, and two fourth clamping claw cylinders 256 are horizontally slidably provided on the top surface of the horizontal plate 251. The clamp mechanism 2 of the present invention can fix the upper tube, lower tube, head tube, middle tube, and horizontal fork and vertical fork of the bicycle frame respectively, and can adjust the position of each workpiece independently, so that the welding parts of each workpiece can be tightly connected, and the welding operation can be directly carried out without using a handling robot to carry each workpiece in turn and then weld them, which is more efficient and saves the cost of the handling robot.

[0035] The high-frequency welding mechanism 5 includes a dual-axis movable seat 51 and a third six-axis mechanical arm 52. A welding assembly 53 is provided on the output end of the third six-axis mechanical arm 52. The welding assembly 53 includes a plate body 531 fixedly connected to the output end of the third six-axis mechanical arm 52. A sleeve 532 is slidably provided on the side wall of the plate body 531. A high-frequency welding head 533 is fixedly sleeved on the sleeve 532. An arc-shaped power groove 534 is provided on the side wall of the plate body 531. An arc-shaped power block 535 is slidably connected in the arc-shaped power groove 534. The arc-shaped power block 535 is fixedly connected to the side wall of the sleeve 532. The plate body 531 is located inside the arc-shaped power groove 534. A top slide groove 536 is provided at the top surface of the power groove 534, and an arc-shaped tooth plate 537 is fixedly connected to the top surface of the arc-shaped power block 535. The arc-shaped tooth plate 537 is located in the top slide groove 536. Multiple gears 538 are connected and rotate evenly in the top slide groove 536. The arc-shaped tooth plate 537 meshes with multiple gears 538 connected at any position. Through the action of the arc-shaped power block 535, the sleeve 532 can move in an arc-shaped path. When welding the arc-shaped position of the welding point, an arc-shaped contouring movement is performed to make the welding point consistent with the curvature of the frame pipe, thereby improving the welding effect.

[0036] Example 2: Please refer to Figure 1-11 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Two synchronous pulleys 539 are fixedly connected to the rotating shaft of each gear 538. The synchronous pulleys 539 on the two adjacent gears 538 are sleeved with the first synchronous belt 5310. The side of the plate 531 away from the sleeve 532 is fixedly connected to the fifth servo reduction motor 5313. The rotating shaft end of the fifth servo reduction motor 5313 is fixedly connected to the rotating shaft of one of the gears 538. A guide arc groove 5311 is opened on the side of the plate 531 close to the sleeve 532. Through the synchronous rotation of multiple gears 538, the arc path movement of the arc power block 535 is realized. The guide arc block 5312 is slidably connected in the guide arc groove 5311. The guide arc block 5312 is fixedly connected to the side wall of the sleeve 532. The width of the arc power groove 534 close to the sleeve 532 is smaller than the width of the other side. This shape can ensure the connection stability between the arc power block 535 and the arc power groove 534.

[0037] The top surfaces at both ends of the conveying platform 11 are rotatably connected to two driving pulleys 14, and the two driving pulleys 14 are sleeved with a conveying belt 15. The top surface of the conveying platform 11 is located outside the conveying belt 15 and is fixedly connected to an annular track 16. The work station 12 is set on the annular track 16, and the bottom surface of the work station 12 is rotatably connected to multiple guide wheels 18. Multiple guide wheels 18 roll and contact both sides of the annular track 16. The side wall of the work station 12 is fixedly connected to a connecting plate 17, and the connecting plate 17 is fixedly connected to the side wall of the conveying belt 15. The top surface of the work station 12 is fixedly embedded with a disc motor 19, and the top end of the rotating shaft end of the disc motor 19 is fixedly connected to the bottom center of the strip table 21. The bottom surface of the conveying platform 11 is fixedly connected to multiple legs 111, and the bottom surface of the conveying platform 11 is fixedly connected to a driving servo reduction motor 110, and the rotating shaft end of the driving servo reduction motor 110 is fixedly connected to the rotating shaft of one of the driving pulleys 14.

[0038] A top groove 228 is provided on the top surface of the strip plate 221, and a sliding block 229 is horizontally slidably connected in the top groove 228. The bottom end of the vertical rod 222 is fixedly connected to the top surface of the sliding block 229. The top surface of one end of the strip plate 221 is fixedly connected to the second cylinder 2210, and the output end of the second cylinder 2210 is fixedly connected to the side wall of the bottom end of the vertical rod 222, so as to facilitate the adjustment of the position of the head pipe.

[0039] Two upper side grooves 235 are formed on both sides of the upper part of the through groove 232, and an upper side block 236 is vertically slidably connected in each upper side groove 235, and the upper side block 236 is fixedly connected to the side wall of the first clamping claw cylinder 233. Two lower side grooves 237 are formed on both sides of the lower part of the through groove 232, and a lower side block 238 is vertically slidably connected in each lower side groove 237, and the lower side block 238 is fixedly connected to the side wall of the second clamping claw cylinder 234. Two vertical shafts 239 are vertically rotatably connected inside the two sides of the vertical frame 231, and the vertical shafts 239 are vertically rotatably connected inside the vertical frame 231. 9 penetrates the upper groove 235 and the lower groove 237, the vertical shaft 239 is located in the upper groove 235 and fixedly sleeved with the left-hand screw rod 2310, the vertical shaft 239 is located in the lower groove 237 and fixedly sleeved with the right-hand screw rod 2311, the upper block 236 is fixedly connected with the upper threaded sleeve 2312, the lower block 238 is fixedly connected with the lower threaded sleeve 2313, the left-hand screw rod 2310 is threadedly connected with the upper threaded sleeve 2312, and the right-hand screw rod 2311 is threadedly connected with the lower threaded sleeve 2313.

[0040] The sixth servo reduction motor 2314 is fixedly connected to the center of the top surface of the vertical frame 231. The shaft end of the sixth servo reduction motor 2314 is located inside the top surface of the vertical frame 231 and is fixedly connected to two driving pulleys 2315. The top end of the vertical shaft 239 is located inside the top surface of the vertical frame 231 and is fixedly connected to the driving pulley 2315. The second synchronous belt 2317 is sleeved on the driving pulley 2315 and the driven pulley 2316 to facilitate adjustment of the positions of the upper tube and the lower tube.

[0041] A first slide groove 243 is provided on the side wall of the column 241, and a first slider 244 is vertically slidably connected in the first slide groove 243, and the first slider 244 is fixedly connected to the side wall of the third clamping cylinder 242. The first slide groove 243 is vertically rotatably connected to the first screw rod 245, and a first threaded sleeve 246 is fixedly connected to the first slider 244. The first screw rod 245 is threadedly connected to the first threaded sleeve 246. The top end of the column 241 is fixedly connected to the first servo reduction motor 247, and the rotating shaft end of the first servo reduction motor 247 is fixedly connected to the end of the first screw rod 245, so as to facilitate the adjustment of the position of the middle tube.

[0042] A second sliding groove 252 is provided on the top surface of the horizontal plate 251, and the second sliding groove 252 is horizontally slidingly connected to the second slider 253. Two fourth clamping jaw cylinders 256 are fixedly connected to the top surface of the second slider 253. The second sliding groove 252 is horizontally rotatably connected to the second screw rod 254. The second slider 253 is fixedly connected to the second threaded sleeve 255, and the second screw rod 254 is threadedly connected to the second threaded sleeve 255. The end of the horizontal plate 251 is fixedly connected to the second servo reduction motor 257, and the shaft end of the second servo reduction motor 257 is fixedly connected to the end of the second screw rod 254, so as to facilitate the adjustment of the position of the horizontal fork and the vertical fork.

[0043] The grinding mechanism 3 includes a first six-axis robot arm 31 fixedly connected to the top surface of the workbench 13, the output end of the first six-axis robot arm 31 is fixedly connected to a high-speed motor 32, and the rotating shaft end of the high-speed motor 32 is fixedly connected to a grinding disc 33. The spot welding mechanism 4 includes a second six-axis robot arm 41 fixedly connected to the top surface of the workbench 13, and the output end of the second six-axis robot arm 41 is fixedly connected to a spot welding head 42.

[0044] The dual-axis movable seat 51 includes a bottom plate 511, a horizontally sliding plate 512 is arranged on the top surface of the bottom plate 511, a third slide groove 513 is arranged on the top surface of the bottom plate 511, a third slider 514 is horizontally slidably connected in the third slide groove 513, the third slider 514 is fixedly connected to the bottom surface of the lateral moving plate 512, a third screw rod 515 is horizontally slidably connected in the third slide groove 513, a third threaded sleeve 516 is fixedly connected to the third slider 514, the third screw rod 515 is threadedly connected to the third threaded sleeve 516, a third servo reduction motor 517 is fixedly connected to the end of the bottom plate 511, and a rotating shaft end of the third servo reduction motor 517 is The end of the third screw rod 515 is fixedly connected, and a fourth sliding groove 518 is provided on the top surface of the transverse plate 512. The fourth sliding groove 518 is horizontally slidably connected to the fourth slider 519. The third six-axis robot arm 52 is fixedly connected to the top surface of the fourth slider 519. The fourth sliding groove 518 is horizontally slidably connected to the fourth screw rod 5110. The fourth slider 519 is fixedly connected to the fourth threaded sleeve 5111. The fourth screw rod 5110 is threadedly connected to the fourth threaded sleeve 5111. The end of the transverse plate 512 is fixedly connected to the fourth servo reduction motor 5112, and the fourth screw rod 5110 is fixedly connected to the rotating shaft end of the fourth servo reduction motor 5112.

[0045] Example 3: Please refer to Figure 1-11, which is the third embodiment of the present invention. This embodiment is based on the above two embodiments. When the present invention is used, the upper tube is fixed on the first clamping claw cylinder 233 of the upper tube and lower tube fixing assembly 23, the lower tube is fixed on the second clamping claw cylinder 234, the head tube is fixed on the head tube fixing assembly 22, the flat fork is fixed on the flat fork and upright fork fixing assembly 25, and the middle tube is fixed on the middle tube fixing assembly 24. The work station 12 drives each workpiece to move to the grinding mechanism 3, grinds the welding position to ensure cleanliness, and then moves to the spot welding mechanism 4 position. The head tube fixing assembly 22, the upper tube and lower tube fixing assembly 23, the middle tube fixing assembly 24, and the flat fork and upright fork fixing assembly 25 adjust the position of each workpiece so that the welding position is aligned, and spot welding is performed through the spot welding head 42 to form a fixing effect. The work station 12 Then it is moved to the high-frequency welding mechanism 5 and welded by high-frequency welding technology; the clamp mechanism 2 of the present invention can fix the upper tube, down tube, head tube, middle tube and fork of the bicycle frame respectively, and can adjust the position of each workpiece independently, so that the welding points of each workpiece can be tightly connected, and the welding operation can be carried out directly without using a handling robot to carry each workpiece in turn and then weld them, which is more efficient and saves the cost of the handling robot; in the welding assembly 53 of the present invention, the action of the arc power block 535 allows the sleeve 532 to move in an arc path. When welding the position where the welding point is in an arc state, the high-frequency welding head 533 performs an arc-shaped contouring movement to make the welding point consistent with the curvature of the frame pipe, thereby improving the welding effect.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle frame fully automatic tooling cycle welding production line, comprising a ring conveyor line (1), characterized in that: The annular conveyor line (1) comprises a conveyor platform (11), a plurality of workstations (12) are arranged on the top surface of the conveyor platform (11), a fixture mechanism (2) is arranged on each of the workstations (12), a worktable (13) is horizontally fixedly connected to the side wall of the conveyor platform (11), a grinding mechanism (3), a spot welding mechanism (4), and a high-frequency welding mechanism (5) are arranged on the worktable (13), and the spot welding mechanism (4) is located between the grinding mechanism (3) and the high-frequency welding mechanism (5); The clamp mechanism (2) comprises a strip-shaped platform (21), and a head tube fixing assembly (22), an upper tube and lower tube fixing assembly (23), a middle tube fixing assembly (24), and a flat fork and upright fork fixing assembly (25) are sequentially arranged on the top surface of the strip-shaped platform (21) from one end to the other end. The head tube fixing assembly (22) comprises a strip-shaped plate (221) fixedly connected to the top surface of the end of the clamp mechanism (2), and a vertical rod (222) is horizontally slidably arranged on the top surface of the strip-shaped plate (221), and a vertical block is vertically fixedly connected to one side of the top end of the vertical rod (222). (223), the top of the vertical block (223) is fixedly connected to an arc-shaped fixed clamping block (224), the vertical block (223) is horizontally fixedly connected to a first cylinder (226), the output end of the first cylinder (226) is fixedly connected to a bottom block (227), the top of the bottom block (227) is fixedly connected to an arc-shaped movable clamping block (225), the upper tube and lower tube fixing assembly (23) comprises a vertical frame (231) fixedly connected to the top surface of the strip-shaped table (21), a through slot (232) is provided on the vertical frame (231), and the upper part of the through slot (232) is vertically connected to the top surface of the strip-shaped table (21). The first clamping cylinder (233) is connected to the through groove (232) by vertical sliding, and the lower part of the through groove (232) is connected to the second clamping cylinder (234) by vertical sliding. The middle tube fixing assembly (24) includes a column (241) vertically fixed to the top surface of the strip table (21), and the side wall of the column (241) is vertically slidably provided with a third clamping cylinder (242). The horizontal fork and vertical fork fixing assembly (25) includes a horizontal plate (251) fixed to the top surface of the strip table (21), and the top surface of the horizontal plate (251) is horizontally slidably provided with two fourth clamping cylinders (242). A claw cylinder (256), two upper grooves (235) are provided on both sides of the upper position of the through groove (232), an upper block (236) is vertically slidably connected in each of the upper grooves (235), and the upper block (236) is fixedly connected to the side wall of the first clamping claw cylinder (233), and two lower grooves (237) are provided on both sides of the lower position of the through groove (232), a lower block (238) is vertically slidably connected in each of the lower grooves (237), and the lower block (238) is fixedly connected to the side wall of the second clamping claw cylinder (234); The high-frequency welding mechanism (5) comprises a dual-axis movable seat (51) and a third six-axis mechanical arm (52); a welding assembly (53) is arranged on the output end of the third six-axis mechanical arm (52); the welding assembly (53) comprises a plate body (531) fixedly connected to the output end of the third six-axis mechanical arm (52); a sleeve (532) is slidably arranged on the side wall of the plate body (531); a high-frequency welding head (533) is fixedly sleeved on the sleeve (532); the plate body (531) ) side wall is provided with an arc-shaped power groove (534), an arc-shaped power block (535) is slidably connected in the arc-shaped power groove (534), the arc-shaped power block (535) is fixedly connected to the side wall of the sleeve (532), a top sliding groove (536) is provided inside the plate body (531) at the top surface of the arc-shaped power groove (534), the top surface of the arc-shaped power block (535) is fixedly connected to an arc-shaped toothed plate (537), the arc-shaped toothed plate (537) is located in the top sliding groove (536), and the top sliding groove (536) is fixedly connected to the top surface of the arc-shaped power groove (534). The groove (536) is connected to a plurality of gears (538) that rotate evenly, the arc-shaped toothed plate (537) is meshed with a plurality of gears (538) at any position, two synchronous pulleys (539) are fixedly connected to the rotating shaft of each gear (538), and the first synchronous belt (5310) is sleeved on the synchronous pulleys (539) on two adjacent gears (538), and the plate body (531) is fixedly connected to a fifth servo reduction motor (5313) on the side away from the sleeve (532). The rotating shaft end of the fifth servo reduction motor (5313) is fixedly connected to the rotating shaft of one of the gears (538), and a guide arc groove (5311) is provided on the side of the plate body (531) close to the sleeve (532), and a guide arc block (5312) is slidably connected in the guide arc groove (5311), and the guide arc block (5312) is fixedly connected to the side wall of the sleeve (532), and the width of the arc power groove (534) close to the sleeve (532) is smaller than the width of the other side.

2. The bicycle frame fully automatic tooling cycle welding production line according to claim 1 is characterized by: The top surfaces of both ends of the conveying platform (11) are rotatably connected to two driving pulleys (14), and the two driving pulleys (14) are sleeved with a conveying belt (15). The top surface of the conveying platform (11) is located outside the conveying belt (15) and is fixedly connected to a circular track (16). The work station (12) is arranged on the circular track (16). The bottom surface of the work station (12) is rotatably connected to a plurality of guide wheels (18), and the plurality of guide wheels (18) are in rolling contact with both sides of the circular track (16). The side wall of the work station (12) is fixedly connected to the conveying belt (15). A connecting plate (17) is connected, the connecting plate (17) is fixedly connected to the side wall of the conveying drive belt (15), the top surface of the work station table (12) is fixedly embedded with a disc motor (19), the top end of the rotating shaft of the disc motor (19) is fixedly connected to the center of the bottom surface of the strip table (21), the bottom surface of the conveying table (11) is fixedly connected to a plurality of legs (111), the bottom surface of the conveying table (11) is fixedly connected to a driving servo reduction motor (110), and the rotating shaft end of the driving servo reduction motor (110) is fixedly connected to the rotating shaft of one of the driving pulleys (14).

3. The bicycle frame fully automatic tooling cycle welding production line according to claim 1 is characterized by: A top groove (228) is provided on the top surface of the strip plate (221), a sliding block (229) is horizontally slidably connected in the top groove (228), the bottom end of the vertical rod (222) is fixedly connected to the top surface of the sliding block (229), the top surface of one end of the strip plate (221) is fixedly connected to the second cylinder (2210), and the output end of the second cylinder (2210) is fixedly connected to the side wall of the bottom end of the vertical rod (222).

4. The bicycle frame fully automatic tooling cycle welding production line according to claim 1 is characterized by: Two vertical shafts (239) are vertically rotatably connected inside the two sides of the vertical frame (231), and the vertical shafts (239) penetrate the upper groove (235) and the lower groove (237). The vertical shaft (239) is located inside the upper groove (235) and is fixedly sleeved with a left-hand screw rod (2310). The vertical shaft (239) is located inside the lower groove (237) and is fixedly sleeved with a right-hand screw rod (2311). An upper threaded sleeve (2312) is fixedly connected to the upper block (236), and a lower threaded sleeve (2313) is fixedly connected to the lower block (238). The left-hand screw rod (2310) is threadedly connected to the upper threaded sleeve (2312), and the right-hand screw rod (2311) is threadedly connected to the lower threaded sleeve (2313).

5. The bicycle frame fully automatic tooling cycle welding production line according to claim 4 is characterized by: The center of the top surface of the vertical frame (231) is fixedly connected to a sixth servo reduction motor (2314); the end of the rotating shaft of the sixth servo reduction motor (2314) is located inside the top surface of the vertical frame (231) and is fixedly connected to two driving pulleys (2315); the top end of the vertical shaft (239) is located inside the top surface of the vertical frame (231) and is fixedly connected to a driven pulley (2316); a second synchronous belt (2317) is sleeved on the driving pulley (2315) and the driven pulley (2316).

6. The bicycle frame fully automatic tooling cycle welding production line according to claim 1 is characterized by: The side wall of the column (241) is provided with a first sliding groove (243), the first sliding groove (243) is vertically slidably connected to a first slider (244), the first slider (244) is fixedly connected to the side wall of the third clamping cylinder (242), the first sliding groove (243) is vertically rotatably connected to a first screw rod (245), the first slider (244) is fixedly connected to a first threaded sleeve (246), the first screw rod (245) is threadedly connected to the first threaded sleeve (246), the top end of the column (241) is fixedly connected to a first servo reduction motor (247), and the rotating shaft end of the first servo reduction motor (247) is fixedly connected to the end of the first screw rod (245).

7. The bicycle frame fully automatic tooling cycle welding production line according to claim 1 is characterized by: The top surface of the transverse plate (251) is provided with a second slide groove (252), the second slide groove (252) is horizontally slidably connected to the second slider (253), the two fourth clamping jaw cylinders (256) are fixedly connected to the top surface of the second slider (253), the second slide groove (252) is horizontally rotatably connected to the second screw rod (254), the second slider (253) is fixedly connected to the second threaded sleeve (255), the second screw rod (254) is threadedly connected to the second threaded sleeve (255), the end of the transverse plate (251) is fixedly connected to the second servo reduction motor (257), and the shaft end of the second servo reduction motor (257) is fixedly connected to the end of the second screw rod (254).

8. The bicycle frame fully automatic tooling cycle welding production line according to claim 1 is characterized by: The grinding mechanism (3) comprises a first six-axis mechanical arm (31) fixedly connected to the top surface of the workbench (13), the output end of the first six-axis mechanical arm (31) is fixedly connected to a high-speed motor (32), and the rotating shaft end of the high-speed motor (32) is fixedly connected to a grinding disc (33); the spot welding mechanism (4) comprises a second six-axis mechanical arm (41) fixedly connected to the top surface of the workbench (13), and the output end of the second six-axis mechanical arm (41) is fixedly connected to a spot welding head (42).

9. The bicycle frame fully automatic tooling cycle welding production line according to claim 1, characterized in that: The dual-axis movable seat (51) comprises a bottom plate (511), the top surface of the bottom plate (511) is provided with a transverse plate (512) for horizontal sliding, the top surface of the bottom plate (511) is provided with a third sliding groove (513), the third sliding groove (513) is horizontally slidably connected with a third slider (514), the third slider (514) is fixedly connected to the bottom surface of the transverse plate (512), the third sliding groove (513) is connected with a third screw rod (515), the third slider (514) is fixedly connected to the bottom surface of the transverse plate (512), the third screw rod (515) is threadedly connected to the third screw rod (516), the end of the bottom plate (511) is fixedly connected to a third servo reduction motor (517), the third servo reduction motor (517) ) The end of the rotating shaft is fixedly connected to the end of the third screw rod (515), the top surface of the transverse plate (512) is provided with a fourth slide groove (518), the fourth slide groove (518) is horizontally slidably connected to the fourth slider (519), the third six-axis robot arm (52) is fixedly connected to the top surface of the fourth slider (519), the fourth slide groove (518) is connected to the fourth screw rod (5110), the fourth slider (519) is fixedly connected to the fourth threaded sleeve (5111), the fourth screw rod (5110) is threadedly connected to the fourth threaded sleeve (5111), the end of the transverse plate (512) is fixedly connected to the fourth servo reduction motor (5112), and the rotating shaft end of the fourth servo reduction motor (5112) is fixedly connected to the fourth screw rod (5110).

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