Intelligent robot arc bending device before welding
Technical Field
The utility model relates to a robot welding technology field, in particular to intelligent robot welds preceding arc device.
Background
The steel box girder is an important component in a bridge bearing structure and is mainly used for providing support and avoiding bridge deformation. The steel box girder generally comprises a top plate, a bottom plate and other structures, wherein the top plate and the bottom plate are generally formed by welding a U rib and the bottom plate; at present, U ribs all need to be subjected to arc bending treatment, and the existing arc bending treatment comprises pure manual arc bending processing and automatic arc bending processing of an arc bending machine, but the two processing modes respectively have the following defects:
a pure manual processing mode: the processing quality of the U-shaped ribs is difficult to guarantee, the U-shaped ribs with large diameters are difficult to process, and the production efficiency is extremely low.
The existing machining mode of the arc bending machine is as follows: the bending effect is not good, and the U-shaped rib is easy to wrinkle, so that the quality of the U-shaped rib is affected. At present, the idea of welding circular arc sections is 'straight bending instead of bending', and a large number of short straight line sections are spliced and welded into a whole with a relatively small straight line and a much larger size to replace a circular arc with a relatively large size. The production efficiency is low, the labor cost is high, and the production quality is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
To the problem, an object of the utility model is to provide an intelligent robot welds preceding arc device to realize that intelligent robot replaces manual welding, do the arc processing before welding, improve production efficiency, reduce cost, improve production quality.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an intelligent robot arc bending device before welding comprises a base, a coupling driving mechanism, a conveying line and a plurality of groups of arc bending mechanisms, wherein the conveying line is arranged on the base and is of an arc structure and used for clamping and conveying workpieces;
the multiple groups of arc bending mechanisms are arranged on the base along the conveying line, and the arc bending mechanisms are used for adjusting the bending radian of the workpiece;
the coupling driving mechanism is arranged at one end of the base and used for driving the workpiece to perform coupling motion so as to realize bending and shaping of the workpiece.
The arc bending mechanism comprises an outer side jacking module and an inner side jacking module which are arranged on two sides of the workpiece, wherein the outer side jacking module is used for jacking the workpiece from the outer side of the workpiece, and the inner side jacking module is used for jacking the workpiece from the inner side of the workpiece;
in two adjacent groups of the arc bending mechanisms, the installation positions of the outer side jacking module and the inner side jacking module are opposite.
The inner side jacking module comprises an inner side jacking lead screw base, an inner side jacking linear driving mechanism, an inner side jacking module sliding block and an inner side profiling roller, wherein the inner side jacking lead screw base is arranged on the base;
the inner profiling roller is rotatably arranged on the inner jacking module sliding block and is used for being abutted against the inner side wall of the workpiece.
The inner side tightening linear driving mechanism comprises an inner side tightening screw rod, an inner side tightening screw rod hand wheel and an inner side tightening screw rod nut seat, wherein the inner side tightening screw rod is rotatably arranged on the inner side tightening screw rod base; one end of the inner side jacking lead screw is connected with the inner side jacking lead screw hand wheel, and the other end of the inner side jacking lead screw is connected with the inner side jacking module sliding block through the inner side jacking lead screw nut seat.
The outer side jacking module positioned at the end parts of the two ends comprises outer side profiling rollers, the outer side profiling rollers are arranged on the base and correspond to the inner side profiling rollers positioned at the end parts of the two ends in the inner side jacking module.
The outer side jacking module positioned in the middle comprises an outer side profiling roller and an outer side jacking linear driving mechanism; the outer side jacking linear driving mechanism comprises an outer side jacking module slider base, an outer side jacking lead screw nut base, an outer side jacking lead screw base, an outer side jacking module slider and an outer side jacking lead screw hand wheel, wherein the outer side jacking module slider base and the outer side jacking lead screw base are arranged on the base from inside to outside;
the outer tightening screw rod is rotatably arranged on the outer tightening screw rod base, and one end of the outer tightening screw rod is connected with the outer tightening screw rod hand wheel; the other end of the outer side jacking lead screw is connected with the outer side jacking module sliding block through an outer side jacking lead screw nut seat;
the tight module slider in outside top can be followed perpendicular to transfer chain direction and set up on the tight module slider base in outside top with sliding, outside profiling roller rotationally sets up on the tight module slider in outside top.
The conveying line comprises a plurality of groups of supporting roller mechanisms which are arranged in an arc shape, each supporting roller mechanism comprises a conveying support and an upper conveying line driven roller and a lower conveying line driven roller which are rotatably arranged on the conveying support, the two ends of the upper conveying line driven roller are connected with the conveying support through a height adjusting device, and a workpiece is located between the lower conveying line driven roller and the upper conveying line driven roller and is clamped through the upper conveying line driven roller.
The height adjusting device comprises a conveying line driven roller fixing plate, a nut and a screw, wherein the conveying line driven roller fixing plate is arranged at the end part of the upper conveying line driven roller; the conveying line driven roller fixing plate is in threaded connection with the conveying support through a screw and is locked through a nut; the height of the upper conveying line driven roller is adjusted through a screw.
The coupling driving mechanism comprises a servo hydraulic cylinder base, a servo hydraulic cylinder I, a servo hydraulic cylinder II and a wedging supporting part, wherein the wedging supporting part is arranged between the base and the servo hydraulic cylinder base and is used for supporting a workpiece; servo pneumatic cylinder I and II symmetries of servo pneumatic cylinder set up on servo pneumatic cylinder base to the output all rotates with the wedging supporting part to be connected, and servo pneumatic cylinder I and servo pneumatic cylinder II can drive the forward and reverse rotation of wedging supporting part.
The wedging supporting part comprises a wedging seat, a wedge block I and a wedge block II, wherein the lower end of the wedging seat is rotatably connected with the output ends of the servo hydraulic cylinder I and the servo hydraulic cylinder II; the top of the wedging seat is of a herringbone structure with two wedge-shaped grooves, and the wedge block I and the wedge block II are respectively embedded in the two wedge-shaped grooves and used for locking and unlocking a workpiece.
The utility model has the advantages and beneficial effects that:
the utility model discloses a curved arc treatment before the welding is done in the welding of intelligent robot guarantees that one section quilt curved arc of work piece improves production efficiency, reduce cost, improvement production quality, and is fit for the medium plate more, is fit for more high-power use scene.
The utility model discloses a camber mechanism can realize the variable camber circular arc of work piece, can accomplish arbitrary curve section, and application scope is wide.
Drawings
Fig. 1 is an isometric view of a pre-welding arc bending device of an intelligent robot according to the present invention;
fig. 2 is a partial schematic view of a front arc welding device of an intelligent robot of the present invention;
fig. 3 is a top view of the arc bending device before welding of the intelligent robot of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a sectional view B-B of fig. 3.
In the figure: 1 is a base, 2 is a conveying bracket, 3 is a conveying line driven roller fixing plate, 4 is a nut, 5 is a screw rod, 6 is a lower conveying line driven roller, 7 is an upper conveying line driven roller, 8 is an inner side jacking lead screw fixing end I, 9 is an inner side jacking lead screw base, 10 is an inner side jacking lead screw fixing end II, 11 is an inner side jacking lead screw, 12 is an inner side jacking lead screw hand wheel, 13 is an outer side jacking module slider base, 14 is an outer side jacking lead screw nut base, 15 is an outer side jacking lead screw fixing end I, 16 is an outer side jacking lead screw, 17 is an outer side jacking lead screw base, 18 is an outer side jacking lead screw fixing end II, 19 is an outer side jacking module, 20 is an inner side jacking module, 21 is a workpiece, 22 is an inner side oil-free bushing driven hinge pair, 23 is an inner side jacking lead screw nut base, 24 is an inner side jacking module slider, 25 is an inner side profiling roller, 26 is an inner side profiling roller axis, 27 is an outer side jacking module sliding block, 28 is an outer side oil-free bushing driven hinge pair, 29 is an outer side profiling roller, 30 is an outer side profiling roller axis, 31 is an outer side jacking lead screw hand wheel, 32 is a servo hydraulic cylinder base, 33 is a servo hydraulic cylinder I, 34 is a servo hydraulic cylinder piston rod I, 35 is a servo hydraulic cylinder II, 36 is a servo hydraulic cylinder piston rod II, 37 is a wedging seat, 38 is a wedge block I, 39 is a wedge block II, 40 is hydraulic oil, 41 is a conveying line, and 42 is a wedging supporting part.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides an intelligent robot arc welding device, including base 1, coupling actuating mechanism, transfer chain 41 and multiunit arc bending mechanism, wherein transfer chain 41 sets up on base 1, and transfer chain 41 is the arc structure, is used for the clamp of work piece 21 and carries; a plurality of groups of arc bending mechanisms are arranged on the base 1 along the conveying line 41, and the arc bending mechanisms are used for adjusting the bending radian of the workpiece 21; the coupling driving mechanism is arranged at one end of the base 1 and used for driving the workpiece 21 to perform coupling motion, so that the workpiece 21 is bent and shaped.
As shown in fig. 2, in the embodiment of the present invention, the conveying line 41 includes a plurality of sets of support roller mechanisms arranged in an arc shape, and each support roller mechanism includes the conveying support 2 and the upper conveying line driven roller 7 and the lower conveying line driven roller 6 rotatably disposed on the conveying support 2. Further, both ends of the upper conveyor line driven roller 7 are connected to the conveyor frame 2 through a height adjusting device, and the work 21 is located between the lower conveyor line driven roller 6 and the upper conveyor line driven roller 7 and is clamped by the upper conveyor line driven roller 7.
In the embodiment of the utility model, the height adjusting device comprises a conveying line driven roller fixing plate 3, a nut 4 and a screw rod 5, wherein the conveying line driven roller fixing plate 3 is arranged at the end part of an upper conveying line driven roller 7; the conveying line driven roller fixing plate 3 is in threaded connection with the conveying support 2 through a screw 5 arranged in the vertical direction and is locked through a nut 4; the height of the upper conveyor line driven roller 7 is adjusted by the screw 5.
The embodiment of the utility model provides an in, the tight module 19 in outside top and the tight module 20 in inboard top that the mechanism of bending arc is including setting up in work piece 21 both sides, wherein the tight module 19 in outside top is used for pushing up tight work piece 21 from the outside of work piece 21, and the tight module 20 in inboard top is used for pushing up tight work piece 21 from the inboard of work piece 21. Further, in two adjacent groups of arc bending mechanisms, the installation positions of the outer abutting module 19 and the inner abutting module 20 are opposite. Namely, in one group of the arc bending mechanisms, the outer side jacking module 19 is arranged on the left side of the workpiece 21, and the inner side jacking module 20 is arranged on the right side of the workpiece 21; the outer tightening module 19 of the other set of arc bending mechanisms is disposed on the right side of the workpiece 21, and the inner tightening module 20 is disposed on the left side of the workpiece 21.
As shown in fig. 2-4, in the embodiment of the present invention, the inner tightening module 20 includes an inner tightening screw base 9, an inner tightening linear driving mechanism, an inner tightening module slider 24 and an inner profiling roller 25, wherein the inner tightening screw base 9 is disposed on the base 1, the inner tightening linear driving mechanism is disposed on the inner tightening screw base 9, and the output end is connected to the inner tightening module slider 24, and the inner tightening module slider 24 is slidably disposed on the inner tightening screw base 9 along a direction perpendicular to the conveying line; the inner profiling roller 25 is rotatably disposed on the inner abutting die set slider 24 and is used for abutting against the inner side wall of the workpiece 21. The axis 26 of the inner profiling roller is vertical to the inner jacking module slide block 24, and the inner profiling roller 25 and the inner jacking module slide block 24 form an inner oilless bushing driven hinge pair 22.
In this embodiment, the inner tightening linear driving mechanism includes an inner tightening screw 11, an inner tightening screw hand wheel 12 and an inner tightening screw nut seat 23, wherein the inner tightening screw 11 is rotatably disposed on the inner tightening screw base 9; one end of the inner tightening screw 11 is connected with the inner tightening screw hand wheel 12, and the other end is connected with the inner tightening module sliding block 24 through the inner tightening screw nut seat 23. The inner side tightly-pushing lead screw hand wheel 12 drives the inner side tightly-pushing lead screw 11 to rotate, and the inner side tightly-pushing lead screw 11 moves along the axial direction while rotating, so that the inner side tightly-pushing module sliding block 24 is pushed to slide, and the inner side profiling roller 25 is driven to move and tightly push the inner wall of the workpiece 21.
As shown in fig. 2-4, in the embodiment of the present invention, three groups of arc bending mechanisms are disposed on the base 1, and the three groups of arc bending mechanisms and the supporting roller mechanisms in the conveying line 41 are alternately disposed at intervals. The outside caulking modules 19 at both end portions include outside contour rollers 29, and the outside contour rollers 29 are provided on the base 1 and correspond to the inside contour rollers 25 in the inside caulking modules 20 at both end portions.
The outer side jacking module 19 positioned at the middle position comprises an outer side profiling roller 29 and an outer side jacking linear driving mechanism; the outer side jacking linear driving mechanism comprises an outer side jacking module slider base 13, an outer side jacking lead screw nut base 14, an outer side jacking lead screw 16, an outer side jacking lead screw base 17, an outer side jacking module slider 27 and an outer side jacking lead screw hand wheel 31, wherein the outer side jacking module slider base 13 and the outer side jacking lead screw base 17 are arranged on the base 1 from inside to outside; the outer tightening screw base 17 is provided with an outer tightening screw fixing end I15 and an outer tightening screw fixing end II 18, and the outer tightening screw 16 is rotatably installed on the outer tightening screw fixing end I15 and the outer tightening screw fixing end II 18. One end of the outer tightening screw 16 is connected with the outer tightening screw hand wheel 31, and the other end is connected with the outer tightening module sliding block 27 through the outer tightening screw nut seat 14; the outer side jacking module sliding block 27 can be arranged on the outer side jacking module sliding block base 13 in a sliding mode along the direction perpendicular to the conveying line, and the outer side profiling roller 29 is rotatably arranged on the outer side jacking module sliding block 27. The axis 30 of the outer profiling roller is vertical to the outer jacking module slide block 27, and the outer profiling roller 29 and the outer jacking module slide block 27 form an outer oilless bushing driven hinge pair 28. The outer side tightly-pushing lead screw hand wheel 31 drives the outer side tightly-pushing lead screw 16 to rotate, the outer side tightly-pushing lead screw 16 rotates and moves along the axial direction at the same time, so that the outer side tightly-pushing module sliding block 27 is pushed to move in the reverse direction close to the workpiece 21, the outer side profiling roller 29 is driven to move and tightly pushes against the outer wall of the workpiece 21, and one side wall of the workpiece 21 is located between the inner side profiling roller 25 and the outer side profiling roller 29 of the arc bending mechanism.
As shown in fig. 1 and fig. 3, in the embodiment of the present invention, the coupling driving mechanism includes a servo hydraulic cylinder base 32, a servo hydraulic cylinder i 33, a servo hydraulic cylinder ii 35, and a wedging supporting portion 42, where the wedging supporting portion 42 is disposed between the base 1 and the servo hydraulic cylinder base 32, and is used for supporting the workpiece 21; servo cylinder I33 and servo cylinder II 35 symmetry articulate on servo cylinder base 32 to the output all rotates with wedging supporting part 42 and is connected, and servo cylinder I33 and servo cylinder II 35 can drive wedging supporting part 42 forward and reverse rotation.
As shown in fig. 5, in the embodiment of the present invention, the wedging supporting portion 42 includes a wedging seat 37, a wedge i 38 and a wedge ii 39, wherein the wedging seat 37 is of a T-shaped structure, and the lower end thereof is rotatably connected to a servo hydraulic cylinder piston rod i 34 of the servo hydraulic cylinder i 33 and a servo hydraulic cylinder piston rod ii 36 of the servo hydraulic cylinder ii 35; the top of the wedging seat 37 is of a herringbone structure with two wedging grooves, the workpiece 21 is arranged at the top of the wedging seat 37, and the wedge block I38 and the wedge block II 39 are respectively embedded in the two wedging grooves and used for positioning and locking the workpiece 21. Furthermore, oil can be filled between the wedge blocks I38 and II 39 and the wedging seats 37, and the wedge locking of the workpiece 21 and the wedging seats 37 are controlled to be unlocked through hydraulic oil 40.
The working process of the utility model is as follows;
step 1: the nut 4 is adjusted to move the screw 5 upward, thereby adjusting the position of the upper line follower roller 7.
Step 2: a straight work 21 is passed between the lower line driven roller 6 and the upper line driven roller 7 with one side wall of the work 21 interposed between the inner contour roller 25 and the outer contour roller 29 of each curving mechanism.
And 3, step 3: the nut 4 is adjusted to move the screw 5 downward, and the upper line follower roller 7 is pressed against the work 21.
And 4, step 4: the inner sides of the two outer arc bending mechanisms are adjusted to tightly push the screw rod 11 until one side wall of the workpiece 21 is tightly pressed.
And 5, step 5: the outer side of the middle position arc bending mechanism is adjusted to tightly push the screw rod 16 to a certain distance (the distance needs to be calculated according to the bending angle).
And 6, step 6: the inner side of the arc bending mechanism at the middle position is adjusted to tightly push the screw rod 11 until one side wall of the workpiece 21 is tightly pressed.
And 7, step 7: the wedge I38 and the wedge II 39 are hydraulically pulled downwards (hydraulic oil 40 is discharged), so that the workpiece 21 is wedged and locked with the wedging seat 37.
And 8, step 8: the servo hydraulic cylinder I33 and the servo hydraulic cylinder II 35 move in a coupling mode to drive the workpiece 21 to swing left and right, and the workpiece is bent and shaped in an arc drawing mode.
Step 9: the wedge block I38 and the wedge block II 39 are jacked up through hydraulic oil 40, the wedge lock of the workpiece 21 and the wedge closing seat 37 is unlocked, the servo hydraulic cylinder I33 and the servo hydraulic cylinder II 35 move in a coupling mode, the workpiece returns to the initial position, and one end of the workpiece 21, which is bent, is pulled out.
Step 10: and repeating the steps 7, 8 and 9 until the arc prefabrication of the workpiece 21 is completed.
The utility model discloses a curved arc treatment before the welding is done in the welding of intelligent robot guarantees that one section quilt curved arc of work piece improves production efficiency, reduce cost, improvement production quality, and is fit for the medium plate more, is fit for more high-power use scene.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.