Front axle tube welding robot

Abstract

The front axle pipe welding robot comprises a conveying belt, clamping mechanisms, a first support assembly, a transferring mechanism, a feeding mechanism, a second support assembly, a moving mechanism and a welding mechanism, the transferring mechanism comprises a transferring disc and a second servo motor, and the clamping mechanisms are installed on the conveying belt at intervals and driven by the conveying belt to move; a first support assembly is arranged above the conveying belt, transfer discs are rotationally installed on the left side and the right side of the first support assembly correspondingly, a second servo motor is installed at the lower end of the first support assembly, positioning grooves are formed in the transfer discs, and two feeding mechanisms are arranged in the middle of the first support assembly. The feeding mechanism is used for moving upwards to clamp the support located in the positioning groove and moving downwards to the position below the first support assembly, a second support assembly is further arranged above the conveying belt, two sets of moving mechanisms corresponding to the support are arranged on the second support assembly, welding mechanisms are arranged on the two sets of moving mechanisms respectively, and the moving mechanisms are used for driving the welding mechanisms to move. The problem that during support welding, continuous material taking is inconvenient is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of front axle pipe welding, and in particular to a front axle pipe welding robot. Background Art

[0002] The front axle is a device that transmits the forces acting in all directions between the vehicle frame and the front wheels and the bending moment and torque generated by them. The front axle is mainly used for bearing, braking, and steering functions. According to the braking form, it is divided into drum type and disc type. According to the brake, it is divided into air brake and liquid brake. The front axle is mainly composed of the front axle tube, kingpin, steering knuckle, brake assembly, knuckle arm and tie rod assembly. The front axle tube includes the front axle and two supports, as shown in the attached figure. Figure 15 As shown, two supports are welded to both sides of the middle of the front axle. During welding, the supports are abutted against both sides of the middle of the front axle, and then welding is performed using a welding gun.

[0003] However, although the existing robots used for support welding can perform welding conveniently, continuous material extraction or positioning of the support requires manual coordination with other structures, which is extremely inconvenient.

[0004] Therefore, there is an urgent need for a front axle tube welding robot to solve the problem of inconvenience in continuous material removal during support welding. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a front axle tube welding robot to solve the problem of inconvenience in continuous material removal during support welding.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The lifting mechanism comprises a lifting mechanism, a lifting mechanism, a lifting mechanism, a lifting mechanism, a lifting mechanism of the lifting mechanism, a lifting mechanism of the lifting mechanism, and a lifting mechanism of the lifting mechanism. The lifting mechanism comprises a transfer plate and a second servo motor. The plurality of clamping mechanisms for clamping the front axle are installed at intervals on the conveyor belt and are driven to move by the conveyor belt. A first support assembly is provided above the conveyor belt, and the left and right sides of the upper end of the first support assembly are respectively rotatably installed with a transfer plate. The lower end of the first support assembly is equipped with a second servo motor for connecting and driving the transfer plate to rotate. The transfer plate is provided with a plurality of positioning grooves for placing supports in a ring shape around the axis. Two groups of loading mechanisms are provided in the middle of the first support assembly corresponding to the transfer plates on both sides. The loading mechanism is used to move up and clamp the supports located in the positioning grooves and move down to the bottom of the first support assembly. A second support assembly is also provided above the conveyor belt, and two groups of moving mechanisms are provided corresponding to the supports on the second support assembly. The two groups of moving mechanisms are respectively provided with welding mechanisms for welding, and the moving mechanism is used to drive the welding mechanism to move toward or away from the first support assembly.

[0008] To optimize the above technical solutions, specific measures taken also include:

[0009] Furthermore, the first bracket assembly includes two first support rods and a first support plate. The two first support rods are respectively arranged on the left and right sides of the conveyor belt. The upper ends of the two first support rods are jointly fixed with a first support plate located above the conveyor belt.

[0010] Furthermore, two feeding troughs are provided on the first bracket assembly, and a feeding mechanism is provided in each feeding trough, and the feeding mechanism includes a vertical guide rail, a slide, a U-shaped block, a positioning plate, a fixed rack and a first driving gear. The front and rear ends of the inner side of the feeding trough are fixedly provided with vertical guide rails, and a slide is provided for sliding together between the two vertical guide rails. The side of the slide close to the transfer mechanism on the same side is connected to the U-shaped block through a cylinder, and the cylinder is used to drive the U-shaped block to extend and retract left and right. Electric push rods are fixedly provided on the outer sides of the front and rear ends of the U-shaped block, and the output ends of the two electric push rods can slidably pass through the inner side of the U-shaped block and are connected to the positioning plate. A vertical fixed rack is also provided on the inner side of the feeding trough, and a third servo motor is fixedly provided on the other side of the slide, and the output end of the third servo motor is fixedly provided with a first driving gear, and the first driving gear is meshed with the fixed rack.

[0011] Furthermore, the clamping mechanism includes a supporting base and a slide, the base is fixedly arranged on the surface of the conveyor belt, and slide grooves are respectively provided on the left and right sides of the upper end of the supporting base, and a first screw rod is provided on the inner side of the two slide grooves for rotation along the left and right directions, and the ends of the two first screw rods that are away from each other can be rotatably extended out of the base and a first hand wheel is fixedly provided, and the two first screw rods are threadedly sleeved with a slide that is slidably connected to the slide groove, and the upper end of the slide is provided with a left and right through groove, and the front end surface of the groove is threaded with a second screw rod, and the end of the second screw rod located in the groove is provided with a clamping plate, and the other end of the second screw rod located outside the groove is fixed with a second hand wheel.

[0012] Furthermore, a rubber pad is provided on the upper end of the support base located between the slide seats on both sides.

[0013] Furthermore, the second bracket assembly includes two second support rods and a second support plate, the two second support rods are respectively arranged on the left and right sides of the conveyor belt, and the upper ends of the two second support rods are jointly fixed with a second support plate located above the conveyor belt.

[0014] Furthermore, the moving mechanism includes a transverse guide rail, a sliding rod, a driving rack, a connecting plate and a lifting plate, the transverse guide rail is fixedly arranged on the second bracket assembly, the sliding rod is provided on the inner side of the upper end of the transverse guide rail for sliding in the front-rear direction, the upper end of the sliding rod is fixedly provided with a driving rack, the upper end side of the second bracket assembly is fixedly provided with a fourth servo motor, the output end of the fourth servo motor is fixedly provided with a second driving gear meshing with the driving rack, the sliding rod is fixedly provided with a connecting plate at one end close to the first bracket assembly, the lower end of the connecting plate is slidably connected to the lifting plate, and an electric telescopic rod for driving the lifting plate to move up and down is also provided between the connecting plate and the lifting plate, and the welding mechanism is installed on the lifting plate.

[0015] Furthermore, the moving mechanism is connected to the welding mechanism through a bidirectional positioning mechanism, and the bidirectional positioning mechanism includes a first semicircular plate and a second semicircular plate, the lifting plate is provided with a first guide slot and a second guide slot parallel to each other in the left and right directions, a first guide block is slidably provided on the inner side of the first guide slot, the first guide block is located at the lower end of the lifting plate and connected to one end of the first semicircular plate, a second guide block is slidably provided on the inner side of the second guide slot, the second guide block is located at the lower end of the lifting plate and connected to one end of the second semicircular plate, a first rack is fixedly provided on the upper end of the first guide block along the left and right directions, a second rack is fixedly provided on the upper end of the second guide block along the left and right directions, a fifth servo motor is fixedly provided on the upper end of the lifting plate, a positioning gear is fixedly provided on the output end of the fifth servo motor, the first rack and the second rack are respectively meshed with the front and rear sides of the positioning gear in parallel, the positioning gear is used to synchronously drive the first rack and the second rack to move, and carry the first semicircular plate and the second semicircular plate to move closer or farther away, and a welding mechanism is provided on the first semicircular plate and the second semicircular plate.

[0016] Furthermore, the welding mechanism includes a semicircular guide bar, a hanging bracket and a welding gun, the inner sides of the first semicircular plate and the second semicircular plate are respectively provided with a semicircular guide groove, the inner sides of the two semicircular guide grooves are both slidably provided with a semicircular guide bar, the outer arc surface of the semicircular guide bar is fixedly provided with a semicircular rack located on the inner side of the semicircular guide groove, the upper side of the first semicircular plate or the second semicircular plate is fixedly provided with a sixth servo motor, the output end of the sixth servo motor is fixedly provided with a third driving gear for meshing with the semicircular rack, the lower end of the semicircular guide bar is fixedly provided with a plurality of hanging brackets, and the middle of the lower ends of the plurality of hanging brackets are provided with a welding gun, one end of the plurality of hanging brackets is fixedly provided with an intake pipe, and the other end of the plurality of hanging brackets is fixedly provided with an exhaust pipe, and the upper sides of the first semicircular plate and the second semicircular plate are provided with a plurality of vacuum cleaners, the air suction port of the vacuum cleaner is connected to the intake pipe through an air inlet hose, and the air outlet of the vacuum cleaner is connected to the exhaust pipe through an air outlet hose.

[0017] Furthermore, side plates are provided on both sides of the conveyor belt, and a first servo motor for driving the conveyor belt to rotate is fixedly provided on the side edge of one of the side plates.

[0018] The beneficial effects of the present invention are:

[0019] The present invention is provided with a transfer mechanism and a loading mechanism. When in use, the second servo motor can be used to drive the transfer plate to rotate, thereby driving the positioning groove on the upper side of the transfer plate and the support therein to rotate together, and then the support is continuously rotated to the side close to the loading mechanism. The support arranged on the inner side of the positioning groove can be automatically taken out by the loading mechanism, and the support is moved down and transported to both sides of the middle of the front axle. At this time, after the welding mechanism is driven into place by the moving mechanism, the welding mechanism can complete the welding. Afterwards, the conveyor belt and the clamping mechanism drive the front axle to move one by one to the bottom of the first bracket assembly, and the transfer mechanism and the loading mechanism cooperate to continuously and automatically load the support to the specified position, so as to conveniently carry out continuous material collection of the support, solve the problem of inconvenience in continuous material collection during support welding, reduce the support loading time, and improve the welding efficiency of the support.

[0020] The present invention drives the positioning gear to rotate by the fifth servo motor, which can simultaneously drive the first rack and the second rack to slide relative to or toward each other, and can drive the first guide block and the second guide block at one end of the first rack and the second rack to slide relative to or toward each other in the corresponding first guide groove and the second guide groove, so that the first semicircular plate and the second semicircular plate at the lower ends of the first guide block and the second guide block are close to or away from the support welding position, and multiple welding guns on the lower sides of the first semicircular plate and the second semicircular plate can be used to perform multi-point welding simultaneously, so that the thermal stresses between the multiple welding points offset each other, reduce the influence of thermal stress on the weld, and improve the welding quality. During the welding process, the third driving gear is driven to rotate by the sixth servo motor, and then the semicircular rack is driven to rotate, so that the semicircular guide bar on one side of the semicircular rack slides on the inner side of the semicircular guide groove, which can drive multiple welding guns on the lower side of the semicircular guide bar to perform continuous welding at the weld position, thereby improving welding efficiency.

[0021] The present invention can also drive the grinding head on the lower side of the semicircular guide bar to rub along the weld part during the sliding process of the semicircular guide bar in the inner side of the semicircular guide groove before welding, grind the weld part, eliminate the oxide layer in the weld part, and improve the subsequent welding quality. In the grinding process, the ground oxide layer can be adsorbed into the inside of the vacuum cleaner and filtered through the vacuum cleaner, the air intake hose and the suction pipe, so that the exhausted gas is blown out through the air outlet hose and the exhaust pipe, so that the weld part after adsorption is blown again to improve the cleanliness of the weld part. During the welding process, the heat of the welding part can be absorbed and discharged through the exhaust pipe through the vacuum cleaner, the air intake hose, the suction pipe, the air outlet hose and the exhaust pipe, so that the weld is preheated before welding. On the one hand, it can reduce the welding stress, and on the other hand, it can reduce the welding strain rate, which is conducive to avoiding the generation of welding cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a front axle tube welding robot proposed by the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of a front axle tube welding robot proposed by the present invention. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the overall structure of a front axle tube welding robot proposed by the present invention. Figure 3 ;

[0025] Figure 4 This is a schematic diagram of the partial structure of a front axle tube welding robot proposed by the present invention. Figure 1 ;

[0026] Figure 5 This is a schematic diagram of the partial structure of a front axle tube welding robot proposed by the present invention. Figure 2 ;

[0027] Figure 6 This is a schematic diagram of the partial structure of a front axle tube welding robot proposed by the present invention. Figure 3 ;

[0028] Figure 7 for Figure 1 A magnified view of the structure at point A;

[0029] Figure 8 for Figure 4 A magnified view of the structure at B in the middle;

[0030] Figure 9 for Figure 5 A magnified view of the structure at C in the middle;

[0031] Figure 10for Figure 6 A magnified view of the structure at D in the middle;

[0032] Figure 11 This is a schematic diagram of the structure of the mobile mechanism of the front axle tube welding robot proposed by the present invention. Figure 1 ;

[0033] Figure 12 This is a schematic diagram of the structure of the mobile mechanism of the front axle tube welding robot proposed by the present invention. Figure 2 ;

[0034] Figure 13 for Figure 11 A magnified view of the structure at E in the middle;

[0035] Figure 14 for Figure 12 A magnified view of the structure at F in the middle;

[0036] Figure 15 It is a structural schematic diagram of the front axle pipe of the present invention.

[0037] Figure numerals: 1, conveyor belt; 101, side plate; 102, fixing plate; 103, first servo motor; 2, clamping mechanism; 201, support base; 202, slide; 203, first screw rod; 204, slide; 205, second screw rod; 206, clamping plate; 207, second hand wheel; 208, first hand wheel; 209, rubber pad; 3, first bracket assembly; 301, first support rod; 302, first support plate; 4, transfer mechanism ; 401, second servo motor; 402, transfer plate; 403, positioning slot; 5, feeding mechanism; 501, feeding slot; 502, vertical guide rail; 503, slide plate; 504, U-shaped block; 505, positioning plate; 506, electric push rod; 507, cylinder; 508, third servo motor; 509, first drive gear; 510, fixed rack; 6, second bracket assembly; 601, second support rod; 602, second support plate; 7, moving machine 701, transverse guide rail; 702, slide bar; 703, drive rack; 704, second drive gear; 705, fourth servo motor; 706, connecting plate; 707, lifting plate; 708, electric telescopic rod; 8, bidirectional positioning mechanism; 801, first semicircular plate; 802, second semicircular plate; 803, first guide groove; 804, second guide groove; 805, first guide block; 806, second guide block; 807, first rack; 808, second rack 809, positioning gear; 810, fifth servo motor; 9, welding mechanism; 901, semicircular guide groove; 902, semicircular guide bar; 903, semicircular rack; 904, third drive gear; 905, sixth servo motor; 906, vacuum cleaner; 907, air intake hose; 908, suspension bracket; 909, air intake pipe; 910, exhaust pipe; 911, grinding head; 912, welding gun; 913, air outlet hose; 10, front axle; 11, support. DETAILED DESCRIPTION

[0038] The present invention will now be described in further detail with reference to the accompanying drawings.

[0039] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 and attached Figure 5As shown, a front axle tube welding robot according to an embodiment of the present invention includes a conveyor belt 1, several clamping mechanisms 2, a first bracket assembly 3, a transfer mechanism 4, a loading mechanism 5, a second bracket assembly 6, a moving mechanism 7 and a welding mechanism 9. The transfer mechanism 4 includes a transfer plate 402 and a second servo motor 401. Several clamping mechanisms 2 for clamping the front axle 10 are installed at intervals on the conveyor belt 1 and are driven to move by the conveyor belt 1. A first bracket assembly 3 is provided above the conveyor belt 1. Transfer plates 402 are rotatably installed on the left and right sides of the upper end of the first bracket assembly 3. The lower end of the first bracket assembly 3 is equipped with a device for connecting and driving the transfer plate 402 to rotate. A second servo motor 401 is provided, and a plurality of positioning grooves 403 for placing the supports 11 are provided in a ring shape around the axis on the transfer plate 402. Two sets of loading mechanisms 5 are provided in the middle of the first bracket assembly 3 corresponding to the transfer plates 402 on both sides. The loading mechanisms 5 are used to move up and clamp the supports 11 located in the positioning grooves 403, and move down to the bottom of the first bracket assembly 3. A second bracket assembly 6 is also provided above the conveyor belt 1. Two sets of moving mechanisms 7 are provided on the second bracket assembly 6 corresponding to the supports 11. The two sets of moving mechanisms 7 are respectively provided with welding mechanisms 9 for welding. The moving mechanisms 7 are used to drive the welding mechanisms 9 to move toward or away from the first bracket assembly 3.

[0040] In this solution, the front axle includes a front axle 10 and two supports 11 . The two supports 11 are used to be welded to both sides of the middle portion of the front axle 10 . The present invention is provided with the transfer mechanism 4 and the loading mechanism 5. When in use, the second servo motor 401 can be used to drive the transfer plate 402 to rotate, thereby driving the positioning groove 403 on the upper side of the transfer plate 402 and the support 11 therein to rotate together, and then the support 11 is continuously rotated to the side close to the loading mechanism 5. The loading mechanism 5 can automatically take out the support 11 set on the inner side of the positioning groove 403, and move the support 11 down to both sides of the middle of the front axle 10. At this time, after the welding mechanism 9 is driven into place by the moving mechanism 7, the welding mechanism 9 completes the welding. Afterwards, the conveyor belt 1 carries the clamping mechanism 2 to drive the front axle 10 to move one by one to the bottom of the first bracket assembly 3, and the transfer mechanism 4 and the loading mechanism 5 cooperate to continuously and automatically load the support 11 to the specified position, thereby conveniently carrying out continuous material removal of the support 11, solving the problem of inconvenience in continuous material removal when welding the support 11, reducing the loading time of the support 11, and improving the welding efficiency of the support 11.

[0041] In the above scheme, a transfer plate 402 can be provided with five positioning slots 403, the specific number of which can be adjusted according to actual needs. During use, the transfer plate 402 is driven to rotate by the second servo motor 401. Since this embodiment has five positioning slots 403, the angle of each rotation of the transfer plate 402 is 72°, which can rotate the support 11 inside the positioning slot 403 to the upper side close to the front axle 10, facilitating subsequent continuous loading. The conveyor belt 1 is provided with a plurality of clamping mechanisms 2. In this embodiment, the clamping mechanisms 2 can be provided with six, and the specific number can be adjusted according to the length of the conveyor belt 1.

[0042] As attached Figure 7 , Attachment Figure 8 and attached Figure 9 As shown, in another specific embodiment based on the above, the first bracket assembly 3 includes two first support rods 301 and a first support plate 302. The two first support rods 301 are respectively arranged on the left and right sides of the conveyor belt 1. The upper ends of the two first support rods 301 are fixedly provided with a first support plate 302 located above the conveyor belt 1. In this solution, the first support plate 302 can be arranged to be perpendicular to the movement direction of the conveyor belt 1.

[0043] In another specific embodiment based on the above, two feeding troughs 501 are provided on the first bracket assembly 3, and a feeding mechanism 5 is provided in each feeding trough 501. The feeding mechanism 5 includes a vertical guide rail 502, a slide 503, a U-shaped block 504, a positioning plate 505, a fixed rack 510 and a first driving gear 509. The front and rear ends of the inner side of the feeding trough 501 are fixed with vertical guide rails 502, and a slide 503 is provided between the two vertical guide rails 502 for sliding together. The side of the slide 503 close to the transfer mechanism 4 on the same side is connected to the U-shaped Block 504, the cylinder 507 is used to drive the U-shaped block 504 to extend and retract left and right, and electric push rods 506 are fixedly provided on the outer sides of the front and rear ends of the U-shaped block 504. The output ends of the two electric push rods 506 can slide through the inner side of the U-shaped block 504 and are connected to the positioning plate 505. A vertical fixed rack 510 is also provided on the inner side of the loading chute 501. A third servo motor 508 is fixedly provided on the other side of the slide plate 503, and a first driving gear 509 is fixedly provided on the output end of the third servo motor 508. The first driving gear 509 is meshed with the fixed rack 510.

[0044] In this solution, the above-mentioned feeding chute 501 can be opened on the above-mentioned first support plate 302. When in use, the cylinder 507 drives the U-shaped block 504 to move, so that the U-shaped block 504 moves to one side of the support 11, and then the two electric push rods 506 simultaneously drive the two positioning plates 505 to clamp the support 11, and then the third servo motor 508 drives the first driving gear 509 to rotate, so that the first driving gear 509 rises along the fixed rack 510, so that the support 11 can be taken out from the inner side of the positioning groove 403 upward, and then the cylinder 507 drives the U-shaped block 504 to move in the opposite direction, so that the support 11 moves to the upper side of the feeding chute 501. Then, the third servo motor 508 drives the first drive gear 509 to rotate in the reverse direction, so that the first drive gear 509 can rotate in the reverse direction along the fixed rack 510, so that the third servo motor 508 carries the slide plate 503 to descend along the vertical guide rail 502, so that the support 11 clamped on one side of the slide plate 503 descends to the two sides of the front axle 10 on the upper side of the conveyor belt 1, realizing automatic loading of the support 11, improving loading efficiency, and then improving welding efficiency, and the supports 11 on both sides of the front axle 10 can be loaded at the same time, further improving the welding efficiency of the front axle 10 and the support 11.

[0045] As attached Figure 6 and attached Figure 10 As shown, in another specific embodiment based on the above, the clamping mechanism 2 includes a supporting base 201 and a slide 204. The base 201 is fixedly arranged on the surface of the conveyor belt 1, and slide grooves 202 are respectively provided on the left and right sides of the upper end of the supporting base 201. The inner sides of the two slide grooves 202 are respectively provided with first screw rods 203 that are rotatable along the left and right directions. The ends of the two first screw rods 203 that are away from each other can be rotatably extended out of the base 201 and are fixedly provided with a first hand wheel 208. The two first screw rods 203 are both threadedly sleeved with a slide 204 that is slidably connected to the slide groove 202. The upper end of the slide 204 is provided with a left and right through groove, and the front end surface of the groove is threaded with a second screw rod 205. The end of the second screw rod 205 located in the groove is provided with a clamping plate 206, and the other end of the second screw rod 205 located outside the groove is fixedly provided with a second hand wheel 207.

[0046] In this solution, the grooves of the slides 204 on both sides of the support base 201 are used to support the front axle 10. When in use, the first hand wheel 208 is turned to drive the first screw rod 203 to rotate, which can drive the slide 204 to slide along the slide groove 202, and then adjust the position between the two slides 204 to adjust the support and clamping position of different positions of the front axle 10. Then, the front axle 10 is placed on the upper side of the support base 201, and then the second hand wheel 207 is turned to drive the second screw rod 205 to rotate, which can drive the clamping plate 206 at one end of the second screw rod 205 to clamp and fix the two ends of the front axle 10 to prevent shaking during welding and affecting the welding quality.

[0047] Wherein, the upper end of the above-mentioned support base 201 located between the two side slides 204 is provided with a rubber pad 209. In this way, the front axle 10 can be auxiliary supported by the rubber pad 209 to avoid the front axle 10 from colliding with the support base 201 and causing damage.

[0048] In another specific embodiment based on the above, the second bracket assembly 6 includes two second support rods 601 and a second support plate 602. The two second support rods 601 are respectively arranged on the left and right sides of the conveyor belt 1. The upper ends of the two second support rods 601 are fixedly provided with a second support plate 602 located above the conveyor belt 1. In this solution, the length direction of the second support plate 602 is perpendicular to the movement direction of the conveyor belt 1.

[0049] As attached Figure 11 and attached Figure 12 As shown, in another specific embodiment based on the above, the moving mechanism 7 includes a transverse guide rail 701, a slide bar 702, a driving rack 703, a connecting plate 706 and a lifting plate 707. The transverse guide rail 701 is fixedly arranged on the second bracket assembly 6. The slide bar 702 is slidingly provided on the inner side of the upper end of the transverse guide rail 701 along the front-back direction. The upper end of the slide bar 702 is fixedly provided with a driving rack 703. The upper end side of the second bracket assembly 6 is fixedly provided with a fourth servo motor 705. The output end of the fourth servo motor 705 is fixedly provided with a second driving gear 704 that meshes with the driving rack 703. The end of the slide bar 702 close to the first bracket assembly 3 is fixedly provided with a connecting plate 706. The lower end of the connecting plate 706 is slidably connected to the lifting plate 707. An electric telescopic rod 708 for driving the lifting plate 707 to move up and down is also provided between the connecting plate 706 and the lifting plate 707. The welding mechanism 9 is installed on the lifting plate 707.

[0050] In this embodiment, the transverse guide rail 701 and the fourth servo motor 705 are correspondingly arranged on the second support plate 602. During use, the fourth servo motor 705 drives the second drive gear 704 to rotate, thereby driving the drive rack 703 and the slide bar 702 to slide along the transverse guide rail 701, thereby driving the connecting plate 706 at one end of the slide bar 702 to move along the conveying direction of the conveyor belt 1, so that the lifting plate 707 at the lower end of the connecting plate 706 approaches the welding seam position. The lifting plate 707 is then driven up and down by the electric telescopic rod 708 until the welding mechanism 9 reaches the preset position.

[0051] As attached Figure 13As shown, in a further specific embodiment based on the above, the moving mechanism 7 is connected to the welding mechanism 9 through a bidirectional positioning mechanism 8, and the bidirectional positioning mechanism 8 includes a first semicircular plate 801 and a second semicircular plate 802. A first guide groove 803 and a second guide groove 804 parallel to each other are opened on the lifting plate 707 in the left and right directions. A first guide block 805 is slidably provided on the inner side of the first guide groove 803. The first guide block 805 is located at the lower end of the lifting plate 707 and is connected to one end of the first semicircular plate 801. A second guide block 806 is slidably provided on the inner side of the second guide groove 804. The second guide block 806 is located at the lower end of the lifting plate 707 and is connected to one end of the second semicircular plate 802. The first guide block 80 5 is fixedly provided with a first rack 807 along the left and right directions on the upper end, and a second rack 808 is fixedly provided with a second rack 808 along the left and right directions on the upper end of the second guide block 806. A fifth servo motor 810 is fixedly provided on the upper end of the lifting plate 707. A positioning gear 809 is fixedly provided on the output end of the fifth servo motor 810. The first rack 807 and the second rack 808 are respectively engaged with the front and rear sides of the positioning gear 809 in parallel. The positioning gear 809 is used to synchronously drive the first rack 807 and the second rack 808 to move, and to carry the first semicircular plate 801 and the second semicircular plate 802 to move closer or farther away. A welding mechanism 9 is provided on the first semicircular plate 801 and the second semicircular plate 802.

[0052] In this solution, the first semicircular plate 801 and the second semicircular plate 802 can cooperate with each other to form a full circle structure. When in use, the fifth servo motor 810 drives the positioning gear 809 to rotate, which can simultaneously drive the first rack 807 and the second rack 808 to slide relative to or toward each other, and can drive the first guide block 805 at one end of the first rack 807 to slide in the first guide groove 803, and at the same time drive the second guide block 806 at one end of the second rack 808 to slide in the second guide groove 804, so that the first semicircular plate 801 and the second semicircular plate 802 at the lower ends of the first guide block 805 and the second guide block 806 are close to or away from the welding part of the support 11, which is convenient for subsequent welding.

[0053] As attached Figure 14As shown, in a further specific embodiment based on the above, the welding mechanism 9 includes a semicircular guide bar 902, a suspension bracket 908 and a welding gun 912, and the inner sides of the first semicircular plate 801 and the second semicircular plate 802 are respectively provided with a semicircular guide groove 901, and the inner sides of the two semicircular guide grooves 901 are both slidably provided with a semicircular guide bar 902, and the outer arc surface of the semicircular guide bar 902 is fixedly provided with a semicircular rack 903 located on the inner side of the semicircular guide groove 901, and the upper side of the first semicircular plate 801 or the second semicircular plate 802 is fixedly provided with a sixth servo motor 905, and the output end of the sixth servo motor 905 is fixedly provided with a third driving gear 904 for engaging with the semicircular rack 903, and the semicircular guide bar 902 is fixedly provided with a semicircular rack 903. Several hanging brackets 908 are fixedly provided at the lower end of the circular guide bar 902, and a welding gun 912 is provided in the middle of the lower end of each of the hanging brackets 908. An intake pipe 909 is fixedly provided at one end of each of the hanging brackets 908, and an exhaust pipe 910 is fixedly provided at the other end of each of the hanging brackets 908. Several vacuum cleaners 906 are provided on the upper side of the first semicircular plate 801 and the second semicircular plate 802. The air suction port of the vacuum cleaner 906 is connected to the intake pipe 909 through an air inlet hose 907, and the air outlet of the vacuum cleaner 906 is connected to the exhaust pipe 910 through an air outlet hose 913. A grinding head 911 is fixedly provided on the exhaust pipe 910 and is located between the intake pipe 909 and the welding gun 912.

[0054] In this solution, two suspension brackets 908 are provided on a semicircular guide bar 902, that is, two welding guns 912 are provided on a semicircular guide bar 902, which enables the welds to be welded at multiple points simultaneously, eliminates thermal stress between each other, and improves welding quality. The specific number of welding guns 912 can be adjusted according to actual conditions.

[0055] During the welding process, after reaching the designated position, the first semicircular plate 801 and the second semicircular plate 802 are brought close to each other and close to the area to be welded of the support 11, or a full circular structure is formed to wrap the area to be welded of the support 11, and the two ends of the two semicircular guide bars 902 on the inner sides of the first semicircular plate 801 and the second semicircular plate 802 are abutted against each other, and then the third driving gear 904 is driven to rotate by the sixth servo motor 905, thereby driving the semicircular rack 903 to rotate, so that the semicircular guide bar 902 on one side of the semicircular rack 903 slides on the inner side of the semicircular guide groove 901, which can drive the suspension bracket 908 on the lower side of the semicircular guide bar 902 to slide along the semicircular guide groove 901 on the lower sides of the first semicircular plate 801 and the second semicircular plate 802. The welding guns on multiple suspension brackets 908 can perform continuous welding at different weld locations, thereby improving welding efficiency. In the welding process, the vacuum cleaner 906 can operate, so that the hot air at the high-temperature weld after welding can be sucked into the interior of the air intake hose 913 through the air intake pipe 909, and finally the hot air is blown out through the exhaust pipe 910 through the air outlet hose 913. Since the exhaust pipe 910 is located in front of the welding gun 912 before welding, the weld can be preheated before welding. On the one hand, it can reduce welding stress, and on the other hand, it can reduce welding strain rate, which is beneficial to avoid welding cracks. It can also dissipate heat after the weld, reduce thermal stress at the weld, and improve welding quality.

[0056] And before welding, the sixth servo motor 905 drives the third drive gear 904 to rotate, and then drives the semicircular rack 903 to rotate, so that the semicircular guide bar 902 on one side of the semicircular rack 903 slides on the inner side of the semicircular guide groove 901. During the sliding process of the semicircular guide bar 903 on the inner side of the semicircular guide groove 901, the grinding head 911 on the lower side of the semicircular guide bar 903 is driven to rub along the weld area, grind the weld area, eliminate the oxide layer at the weld area, and improve the subsequent welding quality. In the process of grinding, the oxide layer ground off can also be adsorbed into the inside of the vacuum cleaner 906 and filtered through the vacuum cleaner 906, the air intake hose 907 and the air intake pipe 909, so that the exhausted gas is blown out through the air outlet hose 913 and the exhaust pipe 910, so that the weld area after adsorption is blown again to improve the cleanliness of the weld area.

[0057] In the above solution, the air inlet hose 907 and the air outlet hose 913 are freely extendable and retractable, without interfering with each other's movements. Furthermore, the sixth servo motor 905 is a servo motor driven in a reciprocating mode. In this solution, four welding mechanisms 9 can be provided, arranged at 90 degrees relative to each other. These four welding mechanisms 9 can weld simultaneously, so the semicircular guide bar 902 only needs to rotate 90 degrees to complete the welding of the entire circle. Therefore, the air inlet hose 907 and the air outlet hose 913 do not interfere with each other. After the sixth servo motor 905 rotates 90 degrees forward to complete the welding, it can be rotated 90 degrees in the reverse direction to complete the reset, thus avoiding interference.

[0058] In another specific embodiment based on the above, side panels 101 are provided on either side of the conveyor belt 1. A first servo motor 103 is fixed to the side of one of the side panels 101 to drive the conveyor belt 1. This first servo motor 103 can control the rotational distance of the conveyor belt 1, thereby adjusting the position of the front axle 10, improving welding accuracy, and meeting user requirements. In this solution, the bottom ends of the two first support rods 301 and second support rods 601 are fixed to the corresponding fixed plates 102.

[0059] A specific embodiment of the present invention is as follows:

[0060] When in use, the clamping position is adjusted according to the size of the front axle 10. Specifically, by turning the first hand wheel 208 to drive the first screw rod 203 to rotate, the slide 204 can be driven to slide along the slide groove 202, and then the position between the two slides 204 can be adjusted to adjust the position of the support and clamping of the front axle 10 at different positions. The front axle 10 is placed on the rubber pad 209 in the middle of the upper side of the support base 201, and then the second hand wheel 207 is turned to drive the second screw rod 205 to rotate, which can drive the clamping plate 206 at one end of the second screw rod 205 to clamp and fix the two ends of the front axle 10. Then, the conveyor belt 1 is driven to rotate by the first servo motor 103, so that the pre-clamped and fixed front axle 10 can be transported to the bottom of the feeding mechanism 5.

[0061] Then, the second servo motor 401 drives the transfer plate 402 to rotate, so that the support 11 inside the positioning groove 403 can be rotated to the top close to the front axle 10, and then the cylinder 507 drives the U-shaped block 504 to move, so that the U-shaped block 504 moves to one side of the support 11, and then the two electric push rods 506 simultaneously drive the two positioning plates 505 to clamp the support 11, and then the third servo motor 508 drives the first drive gear 509 to rotate, so that the first drive gear 509 rises along the fixed rack 510, so that the support 11 can be moved from the positioning groove 4 03 is taken out, and then the cylinder 507 drives the U-shaped block 504 to move in the opposite direction, so that the support 11 moves to the upper side of the loading chute 501, and then the third servo motor 508 drives the first driving gear 509 to rotate in the opposite direction, so that the first driving gear 509 can be rotated in the opposite direction along the fixed rack 510, so that the third servo motor 508 descends, and then drives the slide 503 to descend along the vertical guide rail 502, so that the support 11 clamped on one side of the slide 503 descends to both sides of the front shaft 10 on the upper side of the conveyor belt 1, and presses the support 11 against both sides of the front shaft 10;

[0062] Then, the fourth servo motor 705 drives the second driving gear 704 to rotate, which can drive the driving rack 703 and the slide bar 702 to slide along the transverse guide rail 701, thereby driving the connecting plate 706 at one end of the slide bar 702 close to the front axle 10, so that the first semicircular plate 801 and the second semicircular plate 802 on the lower side of the connecting plate 706 are located on both sides of the support 11, and then the electric telescopic rod 708 drives the lifting plate 707 to descend, so that the first semicircular plate 801 and the second semicircular plate 802 are close to the support 11 and welded to the front axle 10. The fifth servo motor 810 then drives the positioning gear 809 to rotate, thereby simultaneously driving the first rack 807 and the second rack 808 to slide toward each other, thereby driving the first guide block 805 at one end of the first rack 807 to slide in the first guide groove 803, and simultaneously driving the second guide block 806 at one end of the second rack 808 to slide in the second guide groove 804, so that the first semicircular plate 801 and the second semicircular plate 802 at the lower ends of the first guide block 805 and the second guide block 806 are close to the welding part of the support 11;

[0063] Then the sixth servo motor 905 drives the third driving gear 904 to rotate, and then drives the semicircular rack 903 to rotate, so that the semicircular guide bar 902 on one side of the semicircular rack 903 slides on the inner side of the semicircular guide groove 901. During the sliding process of the semicircular guide bar 903 inside the semicircular guide groove 901, the grinding head 912 on the lower side of the semicircular guide bar 903 is driven to rub along the weld part to grind the weld part. In the process of grinding, the ground oxide layer can also be adsorbed into the inside of the vacuum cleaner 906 and filtered through the vacuum cleaner 906, the air intake hose 907 and the air intake pipe 909, so that the exhausted gas is blown out through the air outlet hose 913 and the exhaust pipe 910, so that the weld part after adsorption is blown again. Finally, the third driving gear is driven by the sixth servo motor 905 904 rotates, thereby driving the semicircular rack 903 to rotate, so that the semicircular guide bar 902 on one side of the semicircular rack 903 slides on the inner side of the semicircular guide groove 901, which can drive the suspension bracket 908 on the lower side of the semicircular guide bar 902 to slide along the semicircular guide groove 901 on the lower side of the first semicircular plate 801 and the second semicircular plate 802, so that the welding guns on multiple suspension brackets 908 can perform continuous welding at different welding positions, and in the welding process, through the operation of the vacuum cleaner 906, the hot air at the high-temperature weld after welding can be sucked into the interior of the air intake hose 913 through the air intake pipe 909, and finally the hot air is blown out through the exhaust pipe 910 through the air outlet hose 913. Since the exhaust pipe 910 is at the front side of the welding gun 912, the weld will be preheated before welding.

[0064] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. cited in the invention are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0065] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of protection of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, it is understood that various changes, modifications, substitutions, embellishments and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and they should be regarded as the scope of protection of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A front axle pipe welding robot, characterized by: The invention comprises a conveyor belt (1), a plurality of clamping mechanisms (2), a first bracket assembly (3), a transfer mechanism (4), a feeding mechanism (5), a second bracket assembly (6), a moving mechanism (7) and a welding mechanism (9), wherein the transfer mechanism (4) comprises a transfer plate (402) and a second servo motor (401), a plurality of clamping mechanisms (2) for clamping a front axle (10) are installed at intervals on the conveyor belt (1) and are driven to move by the conveyor belt (1), a first bracket assembly (3) is provided above the conveyor belt (1), transfer plates (402) are rotatably installed on the left and right sides of the upper end of the first bracket assembly (3), and a second servo motor (401) for connecting and driving the transfer plate (402) to rotate is installed at the lower end of the first bracket assembly (3). ), a plurality of positioning grooves (403) for placing supports (11) are provided in a ring shape around the axis on the transfer plate (402), two groups of loading mechanisms (5) are provided on the transfer plates (402) on both sides corresponding to the middle of the first bracket assembly (3), the loading mechanisms (5) are used to move up and clamp the supports (11) located in the positioning grooves (403), and move down to the bottom of the first bracket assembly (3), a second bracket assembly (6) is also provided above the conveyor belt (1), two groups of moving mechanisms (7) are provided on the second bracket assembly (6) corresponding to the supports (11), the two groups of moving mechanisms (7) are respectively provided with welding mechanisms (9) for welding, and the moving mechanisms (7) are used to drive the welding mechanisms (9) to move toward or away from the first bracket assembly (3).

2. The front axle pipe welding robot according to claim 1, characterized in that: The first bracket assembly (3) comprises two first support rods (301) and a first support plate (302), wherein the two first support rods (301) are respectively arranged on the left and right sides of the conveyor belt (1), and the upper ends of the two first support rods (301) are fixedly provided with a first support plate (302) located above the conveyor belt (1).

3. The front axle pipe welding robot according to claim 1, characterized in that: Two feeding troughs (501) are provided on the first bracket assembly (3), and a feeding mechanism (5) is provided in each feeding trough (501). The feeding mechanism (5) comprises a vertical guide rail (502), a slide plate (503), a U-shaped block (504), a positioning plate (505), a fixed rack (510) and a first driving gear (509). Vertical guide rails (502) are fixedly provided at both the front and rear ends of the inner side of the feeding trough (501), and a slide plate (503) is provided between the two vertical guide rails (502) for sliding together. The side of the slide plate (503) close to the same-side transfer mechanism (4) is connected to the U-shaped block (504) through a cylinder (507). ), a cylinder (507) is used to drive the U-shaped block (504) to extend and retract left and right, electric push rods (506) are fixedly provided on the outer sides of the front and rear ends of the U-shaped block (504), the output ends of the two electric push rods (506) can slidably penetrate the inner side of the U-shaped block (504) and are connected to a positioning plate (505), a vertical fixed rack (510) is also provided on the inner side of the feeding trough (501), a third servo motor (508) is fixedly provided on the other side of the slide (503), and a first driving gear (509) is fixedly provided on the output end of the third servo motor (508), and the first driving gear (509) is meshed with the fixed rack (510).

4. The front axle pipe welding robot according to claim 1, characterized in that: The clamping mechanism (2) includes a supporting base (201) and a slide (204), wherein the base (201) is fixedly arranged on the surface of the conveyor belt (1), and a slide groove (202) is respectively provided on the left and right sides of the upper end of the supporting base (201), and a first screw rod (203) is provided on the inner side of the two slide grooves (202) so as to rotate along the left and right directions, and the ends of the two first screw rods (203) that are away from each other can be rotatably extended out of the base (201) and fixedly provided with a first hand wheel (208), and the two first screw rods (203) are both threadedly sleeved with a slide (204) that is slidably connected to the slide groove (202), and the upper end of the slide (204) is provided with a groove that passes through the left and right, and the front end surface of the groove is threadedly penetrated by a second screw rod (205), and the end of the second screw rod (205) located in the groove is provided with a clamping plate (206), and the other end of the second screw rod (205) located outside the groove is fixedly provided with a second hand wheel (207).

5. The front axle pipe welding robot according to claim 4, characterized in that: A rubber pad (209) is provided at the upper end of the support base (201) located between the slide seats (204) on both sides.

6. The front axle pipe welding robot according to claim 1, characterized in that: The second bracket assembly (6) comprises two second support rods (601) and a second support plate (602), wherein the two second support rods (601) are respectively arranged on the left and right sides of the conveyor belt (1), and the upper ends of the two second support rods (601) are fixedly provided with a second support plate (602) located above the conveyor belt (1).

7. The front axle pipe welding robot according to claim 1, characterized in that: The moving mechanism (7) includes a transverse guide rail (701), a slide bar (702), a driving rack (703), a connecting plate (706) and a lifting plate (707), wherein the transverse guide rail (701) is fixedly arranged on the second bracket assembly (6), a slide bar (702) is provided on the inner side of the upper end of the transverse guide rail (701) so as to slide along the front-back direction, a driving rack (703) is fixedly provided on the upper end of the slide bar (702), a fourth servo motor (705) is fixedly provided on the side edge of the upper end of the second bracket assembly (6), and the fourth servo motor (705) is fixedly provided on the upper end of the second bracket assembly (6). The output end of the servo motor (705) is fixedly provided with a second driving gear (704) meshing with the driving rack (703); the end of the sliding rod (702) close to the first bracket assembly (3) is fixedly provided with a connecting plate (706); the lower end of the connecting plate (706) is slidably connected to a lifting plate (707); an electric telescopic rod (708) for driving the lifting plate (707) to move up and down is further provided between the connecting plate (706) and the lifting plate (707); and the welding mechanism (9) is installed on the lifting plate (707).

8. The front axle pipe welding robot according to claim 7, characterized in that: The moving mechanism (7) is connected to the welding mechanism (9) via a bidirectional positioning mechanism (8), the bidirectional positioning mechanism (8) comprising a first semicircular plate (801) and a second semicircular plate (802), a first guide groove (803) and a second guide groove (804) parallel to each other are provided on the lifting plate (707) along the left-right direction, a first guide block (805) is provided on the inner side of the first guide groove (803) for sliding, the first guide block (805) is located at the lower end of the lifting plate (707) and connected to one end of the first semicircular plate (801), a second guide block (806) is provided on the inner side of the second guide groove (804) for sliding, the second guide block (806) is located at the lower end of the lifting plate (707) and connected to one end of the second semicircular plate (802), the first guide block (805) is provided A first rack (807) is fixedly provided at the upper end along the left-right direction, a second rack (808) is fixedly provided at the upper end of the second guide block (806) along the left-right direction, a fifth servo motor (810) is fixedly provided at the upper end of the lifting plate (707), a positioning gear (809) is fixedly provided at the output end of the fifth servo motor (810), the first rack (807) and the second rack (808) are respectively engaged in parallel with the front and rear sides of the positioning gear (809), the positioning gear (809) is used to synchronously drive the first rack (807) and the second rack (808) to move, and to move the first semicircular plate (801) and the second semicircular plate (802) to move closer or farther away, and a welding mechanism (9) is provided on the first semicircular plate (801) and the second semicircular plate (802).

9. The front axle pipe welding robot according to claim 8, characterized in that: The welding mechanism (9) comprises a semicircular guide bar (902), a suspension bracket (908) and a welding gun (912); the inner sides of the first semicircular plate (801) and the second semicircular plate (802) are respectively provided with a semicircular guide groove (901); the inner sides of the two semicircular guide grooves (901) are both slidably provided with a semicircular guide bar (902); the outer arc surface of the semicircular guide bar (902) is fixedly provided with a semicircular rack (903) located on the inner side of the semicircular guide groove (901); the upper side of the first semicircular plate (801) or the second semicircular plate (802) is fixedly provided with a sixth servo motor (905); the output end of the sixth servo motor (905) is fixedly provided with a third drive element for engaging with the semicircular rack (903); A movable gear (904) is provided. A plurality of suspension brackets (908) are fixedly provided at the lower end of the semicircular guide bar (902). A welding gun (912) is provided in the middle of the lower end of each of the suspension brackets (908). An air intake pipe (909) is fixedly provided at one end of each of the suspension brackets (908). An exhaust pipe (910) is fixedly provided at the other end of each of the suspension brackets (908). A plurality of vacuum cleaners (906) are provided on the upper side of the first semicircular plate (801) and the second semicircular plate (802). The air intake of the vacuum cleaner (906) is connected to the air intake pipe (909) through an air inlet hose (907), and the air outlet of the vacuum cleaner (906) is connected to the exhaust pipe (910) through an air outlet hose (913).

10. The front axle pipe welding robot according to claim 1, characterized in that: Side plates (101) are provided on both sides of the conveyor belt (1), and a first servo motor (103) for driving the conveyor belt (1) to rotate is fixedly provided on the side edge of one of the side plates (101).

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