Automobile anti-collision beam robot welding device and welding system

Abstract

The invention relates to the technical field of welding, in particular to an automobile anti-collision beam robot welding device and welding system.The automobile anti-collision beam robot welding device comprises a rotary table, and the top of the rotary table is provided with two rotary ends which are oppositely arranged and can synchronously rotate; each rotary end is fixedly provided with one lifting assembly, and each lifting assembly is fixedly provided with one first clamp and one second clamp. The top of the second clamp is used for clamping and fixing a sound absorption box; the lifting assembly is used for driving the second clamp to ascend so that the top face of the sound absorption box can abut against the bottom face of the arch-shaped anti-collision beam. According to the welding device, the two first clamps of the rotary table are used for clamping and fixing one end of the arch-shaped anti-collision beam, the tops of the second clamps are used for clamping and fixing the sound absorption box, and the top face of the sound absorption box abuts against the bottom face of the arch-shaped anti-collision beam through the lifting assembly, so that a welding channel of the welding device is wide, obstacles are few, and the welding efficiency is improved. And the design difficulty of a welding gun moving path is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a robot welding device and a welding system for an automobile anti-collision beam. Background Art

[0002] The anti-collision system of new energy vehicles includes anti-collision beams, energy absorption boxes and longitudinal beams. The anti-collision beam is generally made of square tubes bent into a bow shape that matches the front of the vehicle, and an energy absorption box is welded to the inner side of each end of the anti-collision beam. During welding, the anti-collision beam and the energy absorption box are clamped on the welding fixture of the rotary table, and then the welding robot welds the connection between the anti-collision beam and the energy absorption box. The rotary table is used to flip the fixture to turn the workpiece over.

[0003] At present, welding tools used for welding automobile anti-collision beams generally adopt a base + clamp structure, such as a welding tool for automobile front anti-collision beam assembly disclosed in CN106736156B, which includes a base plate, an anti-collision beam clamping mechanism arranged on the base plate, an anti-collision beam positioning mechanism, an energy absorption box clamping mechanism, an energy absorption box positioning and ejecting mechanism, and an operating table arranged on the side of the base plate. These mechanisms adopt a pneumatic clamp structure.

[0004] As in the above technical solution, a large number of clamp structures are installed on the base of the existing welding tooling, and the anti-collision beam and the energy absorption box are fixed on the welding position through the corresponding clamp support. However, due to the excessive number of clamp structures and the large plate surface of the base, the welding channel is relatively narrow and there are many obstacles, which makes the design of the moving path of the welding gun more difficult. Summary of the invention

[0005] In view of this, the present invention proposes a robot welding device and a welding system for an automobile anti-collision beam, which respectively clamp two ends of the bow-shaped anti-collision beam through a turntable, and the top of the second clamp is used to clamp and fix a sound absorbing box, and the top surface of the sound absorbing box is against the bottom surface of the bow-shaped anti-collision beam through a lifting component, so that the welding channel of the welding device is relatively open and has fewer obstacles, which is conducive to reducing the difficulty of designing the moving path of the welding gun, and solves the problems of the existing welding tooling having a narrow welding channel, more obstacles, and greater difficulty in designing the moving path of the welding gun.

[0006] The technical solution of the present invention is achieved in this way:

[0007] In one aspect, the present invention provides a robot welding device for an automobile anti-collision beam, comprising a rotary table, a lifting assembly, a first clamp and a second clamp, wherein:

[0008] The top of the turntable has two rotating ends which are arranged opposite to each other and can rotate synchronously;

[0009] A lifting assembly is fixed on each of the rotating ends, and a first clamp and a second clamp are fixed on each of the lifting assemblies;

[0010] The two first clamps are respectively used to clamp and fix one end of the arched anti-collision beam, and the top of the second clamp is used to clamp and fix the sound absorbing box;

[0011] The lifting assembly is used to drive the second fixture to rise so that the top surface of the sound absorbing box abuts against the bottom surface of the arched anti-collision beam.

[0012] On the basis of the above technical solution, preferably, the first fixture includes a support block, an eccentric wheel, a slider, a first motor and a second motor, wherein:

[0013] The support block is fixedly connected to the lifting assembly, the interior of the support block is hollow, and the top surface of the support block is set as an arc surface, the arc surface is in contact with the arc bottom surface of the arched anti-collision beam, and the top of the support block is provided with an opening;

[0014] The eccentric wheel is arranged along the Y direction, and the eccentric wheel is rotatably arranged inside the support block;

[0015] The slider is slidably arranged on the top of the support block, and the slider can only slide along the circumferential direction of the arc-shaped surface on the top of the support block;

[0016] The first motor is fixed inside the support block, and is used to drive one end of the slider to extend into the pipe opening at the end of the arched anti-collision beam, and to make the extended end of the slider press downward against the inner wall of the bottom of the arched anti-collision beam;

[0017] The second motor is fixed inside the support block, and the second motor is used to drive one end of the eccentric wheel to pass through the opening to abut against the bottom surface of the arched anti-collision beam.

[0018] On the basis of the above technical solution, preferably, a central shaft is fixed at each end of the eccentric wheel, wherein:

[0019] The two central shafts penetrate the side walls of the support block and are rotatably connected;

[0020] A paddle is fixed to the top of the outer ends of the two central shafts respectively;

[0021] One end of the two paddles close to the slider is parallel to each other, and the distance between the two parallel ends of the paddles is equal to the axial width of the arched anti-collision beam, and the other ends of the two paddles are bent in a horizontal direction away from the support block.

[0022] On the basis of the above technical solution, preferably, a protrusion is provided at one end of the sliding block close to the arched anti-collision beam, and a wedge-shaped surface is provided at the bottom of the protrusion.

[0023] On the basis of the above technical solution, preferably, the first fixture further includes a first gear, wherein:

[0024] The output shaft of the first motor passes through the side wall of the support block;

[0025] The first gear is arranged outside the support block and fixed on the output shaft of the first motor;

[0026] A first tooth groove is provided at the bottom of the slider and at a position corresponding to the first gear, and the first tooth groove is meshed with the first gear;

[0027] A linear rail is fixed to the side of the support block, and the linear rail extends along the arc of the arched anti-collision beam;

[0028] A slide groove is arranged at the bottom of the sliding block, and the linear rail is slidably arranged inside the slide groove.

[0029] On the basis of the above technical solution, preferably, the first fixture further includes a second gear, wherein:

[0030] The second gear is fixed on the output shaft of the second motor;

[0031] The side of the eccentric wheel is provided with a second tooth groove;

[0032] The second gear meshes with the second tooth groove.

[0033] On the basis of the above technical solution, preferably, the lifting assembly includes a bracket and a linear motor, wherein:

[0034] One side of the bracket is fixedly connected to the rotary end, the other side is fixedly connected to the linear motor, and the top of the bracket is fixedly connected to the support block;

[0035] The linear motor is vertically arranged, and the output end of the linear motor is fixedly connected to the second fixture.

[0036] On the basis of the above technical solution, preferably, the lifting assembly further includes a guide rod, wherein:

[0037] The guide rod vertically penetrates the output end of the linear motor;

[0038] The upper end of the guide rod is fixedly connected to the top of the bracket.

[0039] On the basis of the above technical solution, preferably, the second clamp comprises a parallel cylinder, a clamping finger and a positioning seat, wherein:

[0040] The parallel cylinder is arranged along the Y direction, and the parallel cylinder is fixed on the output end of the linear motor;

[0041] The gripping finger is fixed with one on the output end of each of the parallel cylinders;

[0042] The positioning seat is fixed on the top of the parallel cylinder, and a positioning pin is fixed on the top of the positioning seat.

[0043] On the other hand, the present invention also provides a robot welding system for an automobile anti-collision beam, comprising the above-mentioned robot welding device for an automobile anti-collision beam, a welding robot and a feeding robot, wherein:

[0044] The welding robot and the loading robot are symmetrically arranged on both sides of the turntable.

[0045] Compared with the prior art, the automobile anti-collision beam robot welding device and welding system of the present invention have the following beneficial effects:

[0046] (1) The two first clamps of the turntable are respectively used to clamp and fix one end of the arched anti-collision beam, and the top of the second clamp is used to clamp and fix the sound absorbing box. The top surface of the sound absorbing box is pressed against the bottom surface of the arched anti-collision beam through the lifting assembly, so that the welding device can be turned over. Compared with the existing welding tooling, there is no dual constraint of the pneumatic clamp and the base, so that there are fewer obstacles on the welding device of the present invention, the welding channel is open, which is conducive to reducing the difficulty of designing the moving path of the welding gun.

[0047] (2) By providing a wedge-shaped surface, it is convenient to use the wedge-shaped surface to abut against the pipe mouth of the anti-collision beam, and then it is convenient to achieve horizontal and vertical clamping of the anti-collision beam through the cooperation of the eccentric wheel and the wedge-shaped surface, thereby improving the firmness of the workpiece after fixation. At the same time, the top surface of the sound-absorbing box is abutted against the bottom surface of the arched anti-collision beam through the lifting component, thereby achieving a close connection between the sound-absorbing box and the anti-collision beam, making the two workpieces more firmly fixed, which is conducive to improving the quality of the product after welding.

[0048] (3) By setting the ends of the two picks close to the slider to be parallel to each other, and the spacing between the two parallel ends of the picks is equal to the axial width of the arched anti-collision beam, the other ends of the two picks are bent in the horizontal direction away from the support block, so that the anti-collision beam to be placed inside the two picks can be guided by the bent portion of the pick, so that the two ends of the anti-collision beam can be placed on the top of the support block at the corresponding position more smoothly, and then the pick is driven to deflect by the eccentric wheel, so that the bent portion of the pick guides the anti-collision beam to enter between the two parallel ends of the pick, so as to achieve the Y-direction positioning of the anti-collision beam, and then the wedge-shaped surface is pressed against the two ends of the anti-collision beam by sliding the slider to achieve the X-direction and Z-direction positioning and clamping of the anti-collision beam. At the same time, the sound absorbing box is positioned by the clamping fingers and the positioning pins, and then the top surface of the sound absorbing box is pressed against the bottom surface of the arched anti-collision beam by the lifting assembly to achieve the X-direction positioning and clamping of the sound absorbing box. The entire positioning and clamping process is relatively fast and accurate, which is conducive to improving the welding efficiency and the quality of the product after welding.

[0049] (4) By setting the slider to slide only along the circumferential direction of the arc surface at the top of the support block, the wedge surface moves along the arc path, which can ensure that the wedge surface is in good contact with the pipe mouth at the end of the anti-collision beam to achieve a benign abutment. At the same time, the anti-collision beam can slide and displace on the arc surface at the top of the support block to ensure that the arc surface at the top of the support block is in good contact with the arc surface at the bottom of the anti-collision beam at all times, so that the position of the anti-collision beam after being fixed is more accurate, which is beneficial to improving the quality of the product after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 A three-dimensional diagram of a robot welding system for an automobile anti-collision beam according to the present invention;

[0052] Figure 2 A stereoscopic diagram of another viewing angle of a robot welding system for an automobile anti-collision beam of the present invention;

[0053] Figure 3 For the present invention Figure 1 A magnified image of point A;

[0054] Figure 4 It is a schematic diagram of the internal structure of the support block of the present invention;

[0055] Figure 5 A three-dimensional diagram of a robot welding device for an automobile anti-collision beam according to the present invention;

[0056] Figure 6 It is a partial stereoscopic diagram of a robot welding device for an automobile anti-collision beam of the present invention;

[0057] Figure 7 It is a partial side view of a robot welding device for an automobile anti-collision beam of the present invention;

[0058] Figure 8 This is a three-dimensional picture of the bow-shaped anti-collision beam and the sound-absorbing box after welding;

[0059] Fig. 9 is a three-dimensional view of the second tooth groove;

[0060] In the figure: 1. turntable; 2. lifting assembly; 3. first fixture; 4. second fixture; 5. welding robot; 6. feeding robot; 7. bow-shaped anti-collision beam; 8. sound-absorbing box; 21. bracket; 22. linear motor; 23. guide rod; 31. support block; 32. eccentric wheel; 33. slider; 34. first motor; 35. second motor; 36. first gear; 37. second gear; 41. parallel cylinder; 42. clamping finger; 43. positioning seat; 101. rotating end; 321. central axis; 322. pick; 3101. opening; 3102. linear rail; 3201. second tooth groove; 3301. protrusion; 3302. wedge surface; 3303. first tooth groove; 3304. slide groove; 4301. positioning pin. DETAILED DESCRIPTION

[0061] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] like Figure 1-9 As shown, a robot welding system for automobile anti-collision beams of the present invention is mainly used for automated welding operations of anti-collision beams of new energy vehicles. The system mainly includes a robot welding device for automobile anti-collision beams, a welding robot 5 and a loading robot 6.

[0063] Among them, the loading robot 6 is used to place the sound absorbing box 8 and the arched anti-collision beam 7 on the automobile anti-collision beam robot welding device, and the automobile anti-collision beam robot welding device is used to clamp and fix the sound absorbing box 8 and the arched anti-collision beam 7. After fixing, the sound absorbing box 8 and the arched anti-collision beam 7 are welded by the welding robot 5. After welding, the loading robot 6 unloads the materials.

[0064] like Figure 8As shown, the main body of the bow-shaped anti-collision beam 7 is a square tube structure, which is formed into a bow shape by bending sheet metal.

[0065] like Figure 5 As shown, the automobile anti-collision beam robot welding device in the system includes a turntable 1, a lifting component 2, a first clamp 3 and a second clamp 4.

[0066] The turntable 1 is used to flip the workpiece to assist the welding robot 5 in welding. Figure 1 As shown, a welding robot 5 is arranged on one side of the turntable 1 , and a loading robot 6 is arranged on the other side, and the welding robot 5 and the loading robot 6 are symmetrically distributed.

[0067] like Figure 5 As shown, the turntable 1 includes a mounting base for connecting to the ground, and a column is fixed on each side of the top of the mounting base, and the height of the column is greater than the rotation radius of the workpiece. A rotating shaft is rotatably arranged on the top of the column. The rotating shaft is arranged horizontally, and one end of the rotating shaft is set as an input end for connecting to a rotating motor, and the rotating motor is fixed on the column. The other end of the rotating shaft is set as a rotating end 101 for connecting to the lifting component 2. Figure 1 and Figure 3 The two rotating ends 101 of the turntable 1 are arranged opposite to each other and can rotate synchronously, and the vertical flipping of the workpiece is achieved by rotating.

[0068] The lifting assembly 2 is used to lift the sound absorbing box 8. Figure 1-2 As shown, a first clamp 3 and a second clamp 4 are fixed on the lifting assembly 2, wherein the two first clamps 3 are respectively used to clamp and fix one end of the arched anti-collision beam 7, and the top of the second clamp 4 is used to clamp and fix the sound absorbing box 8. Before welding, the lifting assembly 2 drives the second clamp 4 to rise so that the top surface of the sound absorbing box 8 abuts against the bottom surface of the arched anti-collision beam 7, completing the pre-fixation of the sound absorbing box 8 and the arched anti-collision beam 7. Specifically, during welding, the sound absorbing box 8 is first grabbed by the loading robot 6 and placed on the top of the second clamp 4. The sound absorbing box 8 is then clamped and fixed by the second clamp 4. The bow-shaped anti-collision beam 7 is then grabbed by the loading robot 6 and placed on the top of the first clamp 3. The two ends of the bow-shaped anti-collision beam 7 are then clamped and fixed by the first clamp 3. The second clamp 4 is then driven to rise by the lifting assembly 2 so that the top surface of the sound absorbing box 8 abuts against the bottom surface of the bow-shaped anti-collision beam 7. After abutting, the connecting gap between the sound absorbing box 8 and the bow-shaped anti-collision beam 7 is welded by the welding robot 5.

[0069] like Figure 3-7 As shown, the first fixture 3 includes a support block 31 , an eccentric wheel 32 , a slider 33 , a first motor 34 and a second motor 35 .

[0070] The support block 31 is used to support both ends of the arched anti-collision beam 7. The support block 31 is hollow inside and has an opening 3101 at the top. The opening 3101 is used for one end of the eccentric wheel 32 to enter and exit the support block 31. Figure 4 As shown, the top surface of the support block 31 is set as an arc surface, and the arc surface is in contact with the arc bottom surface of the arched anti-collision beam 7. Specifically, the virtual arc of the arc surface is concentric with the virtual arc of the bottom arc surface of the arched anti-collision beam 7 and has the same radius. When the first clamp 3 performs the clamping action, the arched anti-collision beam 7 can slide on the top surface of the support block 31. When sliding, the virtual arc of the arc surface is used as the sliding path. In addition, the bottom of the support block 31 is fixedly connected to the lifting assembly 2.

[0071] like Figure 4 As shown, the first motor 34 is fixed inside the support block 31, and is used to drive one end of the slider 33 to extend into the pipe opening at the end of the arched anti-collision beam 7, and make the extended end of the slider 33 press downward against the inner wall of the bottom of the arched anti-collision beam 7. To achieve this function, combined with Figure 3 and Figure 6 The slider 33 is slidably arranged on the top of the support block 31, and the slider 33 can only slide along the circumferential direction of the arc surface at the top of the support block 31. A protrusion 3301 is arranged at one end of the slider 33 close to the arched anti-collision beam 7, and a wedge-shaped surface 3302 is arranged at the bottom of the protrusion 3301. When the arched anti-collision beam 7 needs to be clamped, the first motor 34 drives the slider 33 to slide, so that the protrusion 3301 extends into the pipe opening of the arched anti-collision beam 7, and the wedge-shaped surface 3302 abuts against the inner pipe wall of the pipe opening to achieve abutment.

[0072] like Figure 4 As shown, the second motor 35 is fixed inside the support block 31, and is used to drive the eccentric wheel 32 to rotate, wherein the eccentric wheel 32 is arranged on one side of the second motor 35, and the eccentric wheel 32 is arranged along the Y direction and rotatably arranged inside the support block 31, when the second motor 35 drives the eccentric wheel 32 to rotate, one end of the eccentric wheel 32 passes through the opening 3101 to support the bottom surface of the arched anti-collision beam 7. Specifically, the eccentric wheel 32 has a small diameter end and a large diameter end, and a second gear 37 is fixed on the output shaft of the second motor 35, and a plurality of second tooth grooves 3201 are arranged on the side of the large diameter end of the eccentric wheel 32 along a fan-shaped path, and the second gear 37 is meshed with the second tooth grooves 3201. When the second motor 35 drives the large diameter end of the eccentric wheel 32 to deflect, the small diameter end of the eccentric wheel 32 moves out of the opening 3101 from the support block 31 and presses upward against the bottom surface of the bow-shaped anti-collision beam 7. During the process, the wedge surface 3302 presses obliquely downward against the pipe mouth of the bow-shaped anti-collision beam 7 to achieve clamping and fixing of the bow-shaped anti-collision beam 7.

[0073] In addition, a central shaft 321 is fixed at each end of the eccentric wheel 32. Figure 6As shown, the two central shafts 321 penetrate the side wall of the support block 31 and are rotatably connected. A paddle 322 is fixed to the top of the outer end of each of the two central shafts 321. The ends of the two paddles 322 close to the slider 33 are parallel to each other, and the distance between the two parallel ends of the paddles 322 is equal to the axial width of the arched anti-collision beam 7. Figure 7 As shown, the other ends of the two paddles 322 are bent in a horizontal direction away from the supporting block 31 .

[0074] Before placing the arched anti-collision beam 7, Figure 7 As shown, the bent parts of the two paddles 322 are facing upward and in a V-shaped open state. When the bow-shaped anti-collision beam 7 is placed, the bow-shaped anti-collision beam 7 is placed on the top surface of the support block 31 from between the two paddles 322. After placement, the eccentric wheel 32 deflects, driving the paddles 322 to deflect. During the process, the opposite ends of the two paddles 322 guide the bow-shaped anti-collision beam 7 to correct the deviation of the bow-shaped anti-collision beam 7, so that it is finally positioned between the two parallel ends of the two paddles 322, thereby realizing the positioning of the bow-shaped anti-collision beam 7.

[0075] like Figure 6 As shown, the output shaft of the first motor 34 passes through the side wall of the support block 31. A first gear 36 is provided on the outside of the support block 31, and the first gear 36 is fixed on the output shaft of the first motor 34. A first tooth groove 3303 is provided at the bottom of the slider 33 and at the position corresponding to the first gear 36, and the first tooth groove 3303 is meshed with the first gear 36. A linear rail 3102 is fixed to the side of the support block 31, and the linear rail 3102 extends along the arc of the arched anti-collision beam 7. A slide groove 3304 is provided at the bottom of the slider 33, and the linear rail 3102 is slidably provided on the inner side of the slide groove 3304.

[0076] The two ends of the support block 31Y extend downward, so that the support block 31 is in an inverted U-shaped structure, and the first tooth groove 3303 and the slide groove 3304 are arranged on the downward extending portion of the support block 31. In addition, a plurality of first tooth grooves 3303 are equidistantly arranged along the virtual arc line of the top arc surface of the support block 31, and the linear rail 3102 and the slide groove 3304 extend along the virtual arc line.

[0077] In the above structure, the first motor 34 and the second motor 35 are both dual-axis motors. Fig. 9 As shown, a first gear 36 is provided on each of the two output ends of the first motor 34, and a second gear 37 is provided on each of the two output ends of the second motor 35. Accordingly, two rows of second tooth grooves 3201 and slide grooves 3304 are provided to improve the driving effect and further improve the clamping effect.

[0078] like Figure 3As shown, the lifting assembly 2 includes a bracket 21, a linear motor 22 and a guide rod 23. One side of the bracket 21 is fixedly connected to the rotating end 101, the other side is fixedly connected to the linear motor 22, and the top of the bracket 21 is fixedly connected to the support block 31. The linear motor 22 is vertically arranged, and the output end of the linear motor 22 is fixedly connected to the second clamp 4. The guide rod 23 vertically penetrates the output end of the linear motor 22, and the upper end of the guide rod 23 is fixedly connected to the top of the bracket 21.

[0079] Figure 3 In the embodiment, the support 21 includes a vertical plate and two horizontal plates. One of the horizontal plates is fixed to the top of the vertical plate for supporting and fixing the support block 31. The other horizontal plate is fixed to the side of the vertical plate for fixing and connecting the rotating end 101 of the turntable 1.

[0080] like Figure 3 As shown, the second fixture 4 includes a parallel cylinder 41, a clamping finger 42 and a positioning seat 43, wherein. The parallel cylinder 41 is arranged along the Y direction, and the parallel cylinder 41 is fixed on the output end of the linear motor 22; a clamping finger 42 is fixed on the output end of each parallel cylinder 41; the positioning seat 43 is fixed on the top of the parallel cylinder 41, and a positioning pin 4301 is fixed on the top of the positioning seat 43. The positioning pin 4301 matches the bolt mounting hole at the bottom of the sound absorbing box 8. When the feeding robot 6 installs the sound absorbing box 8 on the second fixture 4, the bolt mounting hole at the bottom of the sound absorbing box 8 is plugged into the positioning pin 4301 to achieve positioning, and then the clamping finger 42 is driven by the parallel cylinder 41 to perform a clamping action to clamp and fix the sound absorbing box 8.

[0081] The use method of the automobile anti-collision beam robot welding device and welding system of the present invention is as follows:

[0082] First, the sound absorbing box 8 is placed on the second fixture 4 by the loading robot 6, and the sound absorbing box 8 is clamped and fixed by the second fixture 4. Then, the arched anti-collision beam 7 is placed on the first fixture 3 by the loading robot 6, and the arched anti-collision beam 7 is clamped and fixed by the first fixture 3. After loading, the second fixture 4 is driven up by the lifting component 2 so that the top surface of the sound absorbing box 8 abuts against the bottom surface of the arched anti-collision beam 7, and the sound absorbing box 8 and the arched anti-collision beam 7 are pre-fixed. After fixing, the joint of the sound absorbing box 8 and the arched anti-collision beam 7 is welded by the welding robot 5. During the welding process, after welding, the loading robot 6 unloads the material.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A robot welding device for an automobile anti-collision beam, comprising a rotary table (1), characterized in that: It also includes a lifting assembly (2), a first clamp (3) and a second clamp (4), wherein: The top of the turntable (1) has two rotating ends (101) which are arranged opposite to each other and can rotate synchronously, and each of the rotating ends (101) is fixed with one of the lifting components (2), and each of the lifting components (2) is fixed with one of the first clamps (3) and one of the second clamps (4); The two first clamps (3) are respectively used to clamp and fix one end of the arched anti-collision beam (7), and the top of the second clamp (4) is used to clamp and fix the sound absorbing box (8); The lifting assembly (2) is used to drive the second clamp (4) to rise so that the top surface of the sound absorbing box (8) abuts against the bottom surface of the arched anti-collision beam (7).

2. The robot welding device for automobile anti-collision beam according to claim 1, characterized in that: The first fixture (3) comprises a support block (31), an eccentric wheel (32), a slider (33), a first motor (34) and a second motor (35), wherein: The support block (31) is fixedly connected to the lifting assembly (2), the interior of the support block (31) is hollow, and the top surface of the support block (31) is set as an arc surface, the arc surface is in contact with the arc bottom surface of the arched anti-collision beam (7), and the top of the support block (31) is provided with an opening (3101); The eccentric wheel (32) is arranged along the Y direction, and the eccentric wheel (32) is rotatably arranged inside the support block (31); The sliding block (33) is slidably arranged on the top of the supporting block (31), and the sliding block (33) can only slide along the circumferential direction of the arc-shaped surface on the top of the supporting block (31); The first motor (34) is fixed inside the support block (31), and the first motor (34) is used to drive one end of the slider (33) to extend into the pipe opening at the end of the arched anti-collision beam (7), and to make the extended end of the slider (33) press downward against the inner wall of the bottom of the arched anti-collision beam (7); The second motor (35) is fixed inside the support block (31), and the second motor (35) is used to drive one end of the eccentric wheel (32) to pass through the opening (3101) to support the bottom surface of the arched anti-collision beam (7).

3. The robot welding device for automobile anti-collision beam according to claim 2, characterized in that: A central shaft (321) is fixed to each of the two ends of the eccentric wheel (32), wherein: The two central shafts (321) penetrate the side wall of the support block (31) and are rotatably connected, and a paddle (322) is respectively fixed to the top of the outer ends of the two central shafts (321); One end of the two paddles (322) close to the slider (33) is parallel to each other, and the distance between the two parallel ends of the paddles (322) is equal to the axial width of the arched anti-collision beam (7), and the other ends of the two paddles (322) are bent in a horizontal direction away from the support block (31).

4. The robot welding device for automobile anti-collision beam according to claim 2, characterized in that: A protrusion (3301) is provided at one end of the sliding block (33) close to the arched anti-collision beam (7), and a wedge-shaped surface (3302) is provided at the bottom of the protrusion (3301).

5. The robot welding device for automobile anti-collision beam according to claim 2, characterized in that: The first fixture (3) further comprises a first gear (36), wherein: The output shaft of the first motor (34) passes through the side wall of the support block (31); The first gear (36) is arranged outside the support block (31) and fixed on the output shaft of the first motor (34); A first tooth groove (3303) is provided at the bottom of the slider (33) and at a position corresponding to the first gear (36), and the first tooth groove (3303) is meshed with the first gear (36); A linear rail (3102) is fixed to the side of the support block (31), and the linear rail (3102) extends along the arc of the arched anti-collision beam (7); A slide groove (3304) is provided at the bottom of the sliding block (33), and the linear rail (3102) is slidably arranged on the inner side of the slide groove (3304).

6. The robot welding device for automobile anti-collision beam according to claim 2, characterized in that: The first fixture (3) further comprises a second gear (37), wherein: The second gear (37) is fixed on the output shaft of the second motor (35); A second tooth groove (3201) is provided on the side of the eccentric wheel (32); The second gear (37) is meshed with the second tooth groove (3201).

7. The robot welding device for automobile anti-collision beam according to claim 2, characterized in that: The lifting assembly (2) comprises a bracket (21) and a linear motor (22), wherein: One side of the bracket (21) is fixedly connected to the rotating end (101), and the other side is fixedly connected to the linear motor (22); the top of the bracket (21) is fixedly connected to the support block (31); The linear motor (22) is arranged vertically, and the output end of the linear motor (22) is fixedly connected to the second clamp (4).

8. The robot welding device for automobile anti-collision beam according to claim 7, characterized in that: The lifting assembly (2) further comprises a guide rod (23), wherein: The guide rod (23) vertically penetrates the output end of the linear motor (22); The upper end of the guide rod (23) is fixedly connected to the top of the bracket (21).

9. The robot welding device for automobile anti-collision beam according to claim 7, characterized in that: The second clamp (4) comprises a parallel cylinder (41), a clamping finger (42) and a positioning seat (43), wherein: The parallel cylinder (41) is arranged along the Y direction, and the parallel cylinder (41) is fixed on the output end of the linear motor (22); The clamping finger (42) is fixed at the output end of each of the parallel cylinders (41); The positioning seat (43) is fixed on the top of the parallel cylinder (41), and a positioning pin (4301) is fixed on the top of the positioning seat (43).

10. A robot welding system for automobile anti-collision beams, characterized in that: The invention comprises the automobile anti-collision beam robot welding device as claimed in any one of claims 1 to 9, and also comprises a welding robot (5) and a feeding robot (6), wherein: The welding robot (5) and the loading robot (6) are symmetrically arranged on both sides of the turntable (1).

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