CN112264696A - Double-gun automatic welding device for radiator of automobile water tank - Google Patents
Double-gun automatic welding device for radiator of automobile water tank Download PDFInfo
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- CN112264696A CN112264696A CN202011114365.9A CN202011114365A CN112264696A CN 112264696 A CN112264696 A CN 112264696A CN 202011114365 A CN202011114365 A CN 202011114365A CN 112264696 A CN112264696 A CN 112264696A
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- 238000003466 welding Methods 0.000 title claims abstract description 144
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 80
- 230000007306 turnover Effects 0.000 claims abstract description 28
- 239000003638 chemical reducing agent Substances 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 23
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 210000004907 gland Anatomy 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
- B23K9/127—Means for tracking lines during arc welding or cutting
Abstract
The invention discloses a double-gun automatic welding device for an automobile water tank radiator, which comprises a base, a left base, a right base, a first mechanical arm, a second mechanical arm, a transverse moving driving device, a wire feeding mechanism, a welding mechanism, a workpiece clamping device and a turnover device, wherein the welding mechanism is arranged on the base; the left base and the right base are respectively arranged on the left side and the right side of the base, and the right base can transversely move under the driving of the transverse moving driving device; the first mechanical arm and the second mechanical arm are respectively arranged on the left base and the right base, the wire feeding mechanism is matched with the welding mechanism, and the two sets of welding mechanisms are respectively arranged on the first mechanical arm and the second mechanical arm and are driven by the mechanical arms to move and weld along a welding seam; the two turnover devices are respectively arranged on the left base and the right base and are used for turning over the whole workpiece clamping device; the workpiece clamping device comprises a first clamping mechanism and a second clamping mechanism, and the two clamping mechanisms are matched to clamp a workpiece. The device can realize the rapid automatic overturning of the radiator and the exposure of all back weld joints after the overturning, and has high welding efficiency.
Description
Technical Field
The invention relates to the technical field of automatic welding, in particular to a double-gun automatic welding device for an automobile water tank radiator.
Background
Radiator radiators are one of the major components of automobiles. As shown in fig. 8, the water tank heat sink is composed of a middle heat sink and two water chambers at two sides, and in the manufacturing process, the two water chambers inserted at two ends of the heat sink are required to be welded with the heat sink, and the water chambers are ensured to be water-tight, and the welding process is a key process in the whole manufacturing process. The existing methods for welding the radiator mainly comprise the following three methods:
and (3) vertical welding, wherein a workpiece is erected for welding, the front side and the back side of a right-side welding seam are simultaneously welded by adopting two guns, the clamp is manually loosened after the welding is finished, and a worker clamps the workpiece in the direction of changing the number of the workpieces again to weld the front side and the back side of the left-side welding seam.
The method comprises the following steps of horizontal welding, wherein a radiator is horizontally placed on a clamp, two guns are used for welding two welding seams on the front side of the radiator, after welding is completed, the clamp is loosened after a workpiece is cooled, the workpiece is manually moved, the radiator is horizontally placed on the clamp after being turned for 180 degrees, and two welding seams on the back side of the radiator are welded.
The robot is used for full-automatic welding, the radiator is placed on the positioner, the manipulator drives the welding gun to automatically weld one of the welding seams, then the positioner drives the workpiece to turn over, the manipulator continues to weld the second welding seam, and the rest is done by analogy, and the welding of four welding seams is completed step by step.
Vertical welding and horizontal welding all adopt the double gun welding, can weld two welding seams simultaneously, compare and to practice thrift half operating time in manual welding, its shortcoming is that can only weld one side or one side at every turn, and when welding opposite side or another side, the workman need cool off the work piece, and the workman places the work piece again on the operation panel and welds after waiting for the work piece cooling, and this process operation is complicated to waste a large amount of time, lead to the production cycle length. The robot welding is adopted, the automation degree is high, the defect that only one welding line can be welded at a time is that the welding line is required to be waited for the position changing operation of the position changing machine on a workpiece before welding, and the welding can be started only when the workpiece moves to the set position, so that the welding efficiency is not high, and the robot and the position changing machine used in the method are high in manufacturing cost and not high in cost performance.
In addition, because the water tank radiator is an aluminum product, the TIG argon arc welding technology is adopted in the existing radiator welding, the workpiece generates great bending deformation due to heat accumulation in the welding process, the welding seam is easy to deviate, and particularly for the workpiece with the welding thickness of 1.2-1.5 mm, the workpiece is very easy to burn through, and the welding seam deformation is huge.
Disclosure of Invention
In order to solve the technical problem, the invention provides a double-gun automatic welding device for an automobile water tank radiator.
The technical scheme adopted by the invention is as follows:
a double-gun automatic welding device for an automobile water tank radiator comprises a base, a left base, a right base, a first mechanical arm, a second mechanical arm, a transverse moving driving device, a wire feeding mechanism, a welding mechanism, a workpiece clamping device and a turnover device, wherein the left base is fixedly arranged on the left side of the base, the right base is transversely movably arranged on the right side of the base, the transverse moving driving device is used for driving the right base to transversely move along the base, and the right base is locked after being moved in place; the first mechanical arm and the second mechanical arm are respectively arranged on the left base and the right base, and the two mechanical arms have the same structure and are three-coordinate mechanical arms capable of moving along x, y and z axes; the wire feeding mechanism and the welding mechanism are arranged in a matched mode, the left wire feeding mechanism and the welding mechanism are installed on the first mechanical arm and driven by the first mechanical arm to weld along the left welding seam in a moving mode, and the right wire feeding mechanism and the welding mechanism are installed on the second mechanical arm and driven by the second mechanical arm to weld along the right welding seam in a moving mode; the two turnover devices are symmetrically arranged on the left base and the right base respectively, and the two turnover devices synchronously move to realize the integral turnover of the workpiece clamping device; the workpiece clamping device comprises a first clamping mechanism and a second clamping mechanism, the two clamping mechanisms are identical in structure and symmetrically arranged, the first clamping mechanism is installed on the left base through the left side overturning device, the second clamping mechanism is installed on the right base through the right side overturning device, and the two clamping mechanisms are matched to clamp a radiator workpiece to be welded.
Furthermore, the welding mechanism is provided with a welding seam mechanical tracking device, and the welding seam mechanical tracking device comprises a spring guide rod, a first spiral spring, a second spiral spring, a guide rod connecting seat, a cross arm sliding plate, a guide wheel bracket and a tracking guide wheel; the cross arm sliding plate is slidably mounted on a transverse moving arm of the mechanical arm, the spring guide rod is arranged between the cross arm sliding plate and the transverse moving arm and fixed on the transverse moving arm of the mechanical arm through two ends of a support, two guide rod connecting seats are arranged and fixed on the inner side surface of the cross arm sliding plate at intervals, the spring guide rod penetrates through two ends of a central through hole of the two connecting seats and respectively extends out of the two connecting seats, a first spiral spring is sleeved at a left extending end, a second spiral spring is sleeved at a right extending end, one end of the first spiral spring abuts against the inner wall of the left side of the cross arm sliding plate, and the; one end of the second spiral spring abuts against the inner wall of the right side of the cross arm sliding plate, and the other end of the second spiral spring abuts against the right side connecting seat; the guide wheel bracket and the welding gun are fixedly arranged on the cross arm sliding plate, one end of the guide wheel bracket is fixed on the cross arm sliding plate, and the other end of the guide wheel bracket is rotatably connected with the tracking guide wheel through a rotating shaft; the welding gun head is aligned with a welding seam of a radiator to be welded, and the peripheral surface of the tracking guide wheel is in rolling contact with the side surface of the radiator water chamber; when the tracking guide wheel is close to the radiator water chamber, the first spiral spring is pressed, and when the tracking guide wheel is far away from the radiator water chamber, the second spiral spring is pressed.
Further, the welding gun is fixedly arranged on the cross arm sliding plate through a cross fine adjustment mechanism, the cross fine adjustment mechanism is provided with a transverse adjustment mechanism and a longitudinal adjustment mechanism, the welding gun is fixed on the cross fine adjustment mechanism through a gun clamp and a locking handle, the welding deflection angle is adjusted through the gun clamp, the welding gun is adjusted to move up and down and left and right through the transverse adjustment mechanism and the longitudinal adjustment mechanism, and therefore the distance between the welding gun and the tracking guide wheel is adjusted; the locking handle is used for fixing the welding gun after the angle adjustment is finished.
Furthermore, a transverse moving guide rail and a rack are arranged at the right end of the upper side surface of the base, a guide rail sliding block is connected on the transverse moving guide rail in a sliding manner, and the guide rail sliding block is fixed on the bottom surface of the right base; the transverse moving driving device comprises a transverse moving motor and a worm gear reducer, the driving motor and the worm gear reducer are fixedly installed in a middle cavity of the right base, an output shaft of the worm gear reducer vertically extends downwards to be sleeved with a transmission gear, and the transmission gear and the rack form a gear-rack transmission pair.
Further, the first clamping mechanism comprises a first clamp framework, a pressing cylinder mounting seat, a positioning block retaining head, a stop block and a stop block fixing seat; the second clamping mechanism comprises a second clamp framework, a pressing cylinder mounting seat, a jacking cylinder and a jacking cylinder mounting seat; the baffle block is arranged at the front ends of the first clamp framework and the second clamp framework through the baffle block fixing seat and used for positioning the front end of the radiator; the positioning block retaining head is arranged on the first fixture framework through the positioning block seat, the head of the positioning block retaining head points to the left side face of the radiator, the jacking cylinders and the positioning block retaining heads are arranged in a one-to-one correspondence manner, the cylinder piston head of each jacking cylinder is arranged on the second fixture framework through the jacking cylinder mounting seat and points to one side of the positioning block retaining head on the right side face of the radiator, and the jacking cylinders are matched with the positioning block retaining heads and used for positioning two sides of the radiator; the compressing cylinder is arranged on the first clamp framework and the second clamp framework through the compressing cylinder mounting seat and used for compressing the rear radiator in a positioning mode.
Further, the first fixture framework and the second fixture framework are provided with heat dissipation copper plates, and the heat dissipation copper plates are used for supporting the radiator and absorbing welding heat.
Further, the fixture framework mainly comprises two aluminum profiles, a corner lining plate and a connecting angle plate, wherein the two aluminum profiles are connected into an L-shaped support through the corner lining plate and the connecting angle plate, the openings of the two L-shaped supports are opposite, the corner lining plate is connected to the outer sides of the two aluminum profiles, and the connecting angle plate is connected to the inner sides of the two aluminum profiles; the positioning block seat, the jacking cylinder mounting seat and the pressing cylinder mounting seat are fixedly mounted in the through groove of the horizontally arranged aluminum profile through special aluminum profile bolts respectively.
Furthermore, the turnover device comprises a rotary disc, a tapered roller bearing, a bearing sleeve, a gear box, a rotary shaft gear, a driving gear, a turnover motor, a motor reducer, a gear box cover plate, a rotary shaft and a fixed connecting plate; the fixed connecting plate is used for installing and fixing the turnover device, and the rotary disc is used for connecting the workpiece clamping device; the fixed connecting plate, the bearing sleeve and the gear box are sequentially and fixedly connected, the rotating shaft is rotatably arranged in the bearing sleeve through a tapered roller bearing, one end of the rotating shaft penetrates through the fixed connecting plate and is fixedly connected with the rotary disk, and the other end of the rotating shaft extends into the box body of the gear box and is fixedly sleeved with the rotary shaft gear; the gear box cover plate is fixed at the top of the gear box through a screw and used for sealing the gear box body; the motor speed reducer and the overturning motor are fixed on the outer side surface of the gear box, the overturning motor and the speed reducer are coaxially arranged, the axis of the output shaft of the speed reducer is parallel to the axis of the rotating shaft, the output shaft of the speed reducer extends into the gear box body, the driving gear is fixedly sleeved in the gear box body, and the driving gear and the rotating shaft gear form a reduction gear set.
Further, the turnover motor is a servo motor, and the motor reducer is a planetary reducer.
Furthermore, the first mechanical arm and the second mechanical arm respectively comprise a front-back moving arm, a lifting arm and a transverse moving arm; the front and rear moving arms are slidably arranged on the top surfaces of the left base or the right base in a front-and-rear mode, the lifting arms are vertically fixed on the upper side surfaces of the front and rear moving arms, the transverse moving arms and the lifting arms are arranged in a cross mode, and the transverse moving arms can lift up and down along the lifting arms; the end, extending to the workpiece, of the transverse moving arm is provided with a transverse moving mechanism, the transverse moving mechanism comprises two guide rails, a sliding block and a transverse arm sliding plate, the two guide rails are transversely arranged on the transverse moving arm in parallel, the sliding block is connected onto the guide rails in a sliding mode, and the transverse arm sliding plate is fixed onto the two sliding blocks and used for being connected with a welding gun.
The invention has the beneficial effects that:
1. the clamp mechanism of the device adopts a left-right split mode, two clamping mechanisms are used for clamping in a matched mode, the clamping distance between the two clamping mechanisms is adjustable, the clamp adapts to clamping of workpieces with different sizes, a precondition is provided for welding the reverse sides of the workpieces, the existing clamp with the integral platform type can not expose all the reverse side welding seams of the workpieces, the clamping distance can be adjusted along with the sizes of the workpieces by the clamp mechanism of the device, the reverse side welding seams of all the workpieces are exposed, and the welding efficiency is greatly improved.
2. The automatic turnover device with bilateral drive is adopted in the device, the workpiece is turned over along with the clamp, manual work is not needed to turn over the workpiece, the welding of the welding seam on the back side can be rapidly and automatically turned over after the welding of the welding seam on the front side of the workpiece is finished, and the welding efficiency is high.
3. The welding seam mechanical tracking device is additionally arranged on the gun head part of the welding seam welding device, the welding seam welding device is particularly.
Drawings
Fig. 1 is a schematic structural view of a double-gun automatic welding device for an automobile radiator.
Fig. 2 is a schematic structural view of the workpiece clamping device of the present invention.
Fig. 3 is a sectional view taken along line B-B of fig. 2.
Fig. 4 is a schematic perspective view of the workpiece turnover device of the present invention.
Fig. 5 is a cross-sectional view of fig. 4.
Fig. 6 is a schematic structural view of the seam tracking mechanism of the present invention.
Fig. 7 is a schematic structural view of a traverse mechanism of the traverse arm of the present invention.
Fig. 8 is a schematic structural view of a conventional radiator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings and a preferred embodiment.
Referring to fig. 1, the present embodiment provides a double-gun automatic welding device for an automobile water tank radiator, which includes a base 10, a left machine base 20, a right machine base 30, a first mechanical arm 40, a second mechanical arm 50, a traverse driving device 60, a wire feeding mechanism 70, a welding mechanism 80, a workpiece clamping device 90, and a turnover device 100.
The left base 20 and the right base 30 are respectively installed at both sides of the upper side of the base 10. The left base 20 and the right base 30 are each provided with a bottom mounting base, a middle cavity and a top platform. The bottom mounting seat of the right machine base 30 is fixedly connected to one end of the upper side surface of the base 10, the other end of the upper side surface of the base 10 is provided with two parallel traverse guide rails 11, and the front side of one traverse guide rail 11 is provided with a rack 12 in parallel. The transverse guide rail 6 is connected with guide rail sliding blocks 13 in a sliding way, and the two guide rail sliding blocks 13 are respectively fixed on two sides of the bottom surface of the bottom mounting seat of the right base 30. The transverse moving driving device 60 comprises a transverse moving motor 61 and a worm gear reducer 62, the driving motor and the worm gear reducer are fixedly installed in a middle cavity of the right base 30, an output shaft of the worm gear reducer 62 vertically extends downwards to be sleeved with a transmission gear, and the transmission gear and the rack 12 form a gear-rack transmission pair. The transverse moving motor 61 drives the transmission gear to rotate through the worm gear reducer 62, the rack 12 is meshed with the transmission gear, and the right base 30 is driven to transversely move along the transverse moving guide rail 11 and is far away from or close to the left base 20, so that the distance between the left base and the right base is adjusted to adapt to workpiece clamping of different widths.
Referring to fig. 2 and 3, the workpiece clamping device 90 includes a first fixture frame and a second fixture frame, both the first fixture frame and the second fixture frame are provided with a stopper 912 and a stopper fixing seat 913, and the stopper 912 is disposed at the front ends of the two fixture frames through the stopper fixing seat 913 for positioning the front end of the heat sink; the first fixture framework is provided with a pressing cylinder 96, a pressing cylinder mounting seat 97, a positioning block seat 98 and a positioning block stop 99, the second fixture framework is provided with the pressing cylinder 96, the pressing cylinder mounting seat 97, a jacking cylinder 910 and a jacking cylinder mounting seat 911, the positioning block stop 99 is arranged on the first fixture framework through the positioning block seat 98, and the head of the positioning block stop points to the left side surface of the radiator; the jacking cylinder 96 is arranged on the second fixture framework through a jacking cylinder mounting seat 97 and corresponds to the positioning block stoppers 99 one by one, and the piston head of the jacking cylinder points to the right side face of the radiator; the jacking cylinder 96 is matched with the stop head 99 of the positioning block for positioning two sides of the radiator; the hold-down cylinder 96 is disposed on the first and second fixture frames through the hold-down cylinder mount 97, respectively, for positioning hold-down of the rear heat sink. The structure and connection of the components will be described in detail below.
The clamp framework has two, and the symmetry sets up. The two fixture frames are respectively connected with the left base 20 and the right base 30 through the turnover device 100. The two clamps have the same framework structure and are composed of two 1640 aluminum profiles, an angle lining plate 93 and a connecting angle plate 94. Two aluminium alloy connect into L shape support through angle welt 93 and connection scute 94, the vertical setting of first aluminium alloy 91, the level setting of second aluminium alloy, angle welt 93 is connected at the outer terminal surface of two aluminium alloys, connects the medial surface at two aluminium alloy of scute 94 connection, and angle welt 93 and connection scute 94 are provided with a plurality of, play the effect of strengthening skeleton strength simultaneously.
The heat radiation copper plate 95 is provided with two blocks, and the two blocks are fixed on the outer sides of the upper side surfaces of the two horizontally arranged second aluminum profiles 92 through special aluminum profile bolts. The heat radiation copper plate 95 is used for supporting the radiator, absorbs welding heat to cool the radiator, prevents deformation of a workpiece during welding, and can also be used for connecting a ground wire due to good electrical conductivity of the copper plate.
The two stop blocks 912 are respectively fixedly arranged at the front ends of the two clamp frameworks through the stop block fixing seats 913, and the stop blocks 912 are used for positioning the front ends of the radiators. Dog fixing base 913 passes through the special bolt fastening of aluminium alloy at the side of going up of second aluminium alloy 92, and the one end of dog fixing base 913 extends to heat dissipation copper 95, and dog 912 passes its head of dog fixing base 913 and points to the preceding terminal surface of radiator. Through adjusting the mounted position of dog fixing base 913 on second aluminium alloy 2, adjust the front and back position of radiator on pressing from both sides tight skeleton.
The positioning block stoppers 99 are at least two, in this embodiment, the positioning block stoppers 99 are two in number, the two positioning block stoppers 99 are fixed on the fixture framework connected with the left base 20 through the positioning block seat 98 at intervals, the positioning block seat 98 is fixed on the upper side of the first aluminum profile 91 through the special aluminum profile bolt, the positioning block stoppers 99 are in threaded connection with the positioning block seat 98, and the stopper heads point to the outer side of the heat sink.
The jacking cylinders 910 and the positioning block stoppers 99 are disposed in a one-to-one correspondence manner, in this embodiment, two jacking cylinders are disposed, and the two jacking cylinders 910 are fixed to the fixture framework connected to the right frame 30 through the jacking cylinder mounting seats 911 at intervals. The jacking cylinder mounting seat 911 is fixed on the upper side face of the second aluminum profile 92 through an aluminum profile special bolt, the jacking cylinder 910 is horizontally mounted on the jacking cylinder mounting seat 911, and a cylinder piston head points to the outer side face of the radiator. The jacking cylinder 910 is matched with the positioning block stop 99 for positioning two sides of the radiator.
The pressing cylinders 96 are provided with a plurality of pressing cylinders, and are respectively and fixedly installed on the two clamp frameworks through the pressing cylinder installation seats 97. In this embodiment, each of the clamp frames has two pressing cylinders, and the two pressing cylinders 96 are respectively disposed at the front and rear ends of the heat sink. Compress tightly cylinder mount pad 97 and pass through the special bolt fastening of aluminium alloy at the side of going up of first aluminium alloy 91 or second aluminium alloy 92, compress tightly cylinder 96 and vertically install on compressing tightly cylinder mount pad 97, compress tightly the top that the lower pressure head of cylinder 96 is located the radiator hydroecium.
The workpiece clamping device adopts a horizontal clamping mode, is pneumatically compressed, and a left clamp framework is fixedly connected to a turnover device of a left base 20 and can only be turned over but cannot move; the right clamp framework is fixedly connected to the turnover device of the right base 30, and can be turned over and can also move horizontally along with the right base 30. When a workpiece is clamped, the assembled radiator is horizontally placed on the radiating copper plate 95 of the two fixture frameworks, the front end face of the radiator abuts against the head of the stop block 12, the left side face of the radiator abuts against the head of the stop block 9 of the positioning block, the right abutting cylinder 910 is opened to abut against the workpiece leftwards, so that the radiator cannot move leftwards and rightwards and in the front-back direction, then the pressing cylinder 96 is opened, the lower pressing head of the pressing cylinder 96 moves downwards to press the radiator from the upper side, and the workpiece is clamped completely.
Referring to fig. 4 and 5, the turnover device 100 is mainly composed of a rotary disc 101, a tapered roller bearing 102, a bearing housing 103, a gear box 104, a spacer 105, a rotary shaft gear 106, a gland 107, a drive gear 108, a turnover motor 114, a motor reducer 109, a gear box cover plate 110, a reducer plate 111, a rotating shaft 112, and a fixed connection plate 113.
The two sets of turning devices 100 are respectively arranged in the middle cavity of the left base 20 and the right base 30, and the rotary disc 101 is rotatably arranged between the two opposite side surfaces of the left base 20 and the right base 30 through a fixed connecting plate 113 and is respectively used for connecting the left clamp framework and the right clamp framework.
The fixed connecting plate 113, the bearing sleeve 103 and the gear box 104 are sequentially and fixedly connected, a circular boss is arranged at the bottom of the gear box 104 and inserted into the bearing sleeve 103, and a through hole penetrating through the rotating shaft 112 is formed in the axial center of the circular boss. The rotating shaft 112 is rotatably arranged in the bearing sleeve 103 through the tapered roller bearing 102, one end of the rotating shaft 112 penetrates through a through hole of a circular boss of the fixed connecting plate 113 to be fixedly connected with the rotary disc 101, the other end of the rotating shaft 112 penetrates through a through hole at the bottom of the gear box 104 to extend into the box body of the gear box 104, and one end of the rotating shaft 112 extending into the box body of the gear box 104 is fixedly sleeved with the rotary shaft gear 106. The tapered roller bearing 102, the spacer bush 105 and the rotary shaft gear 106 are sequentially sleeved on the rotary shaft 112, one end of the inner ring of the tapered roller bearing 102 abuts against the shaft shoulder of the rotary shaft, the other end of the inner ring abuts against the spacer bush 105, the spacer bush 105 is positioned in the through hole at the bottom of the gear box 104, and the other end of the spacer bush 105 abuts against the rotary shaft gear 106; one end of the outer ring of the tapered roller bearing 102 abuts against the inner wall of the bearing sleeve 103, and the other end abuts against a circular boss of the gear box 104. The gland 107 is fixed on the end face of the rotating shaft 112 by screws, the inner side face of the gland 107 abuts against the rotating shaft gear 106, and the spacer 105 and the gland 107 cooperate to limit the axial movement of the tapered roller bearing 102 and the rotating shaft gear 106. A gearbox cover plate 110 is fixed to the top of the gearbox by screws for closing the gearbox housing. The motor reducer 109 is fixed on the gear box cover plate 110 through the reducer plate 111, the reducer output shaft penetrates through the through hole of the reducer plate 111 and extends into the gear box 104, the driving gear 108 is fixedly sleeved at one end of the reducer output shaft extending into the gear box 104, and the driving gear 108 is meshed with the rotary shaft gear 106 to form a reduction gear set. The output shaft of the turnover motor 114 is fixedly connected with the input shaft of the motor reducer 109. In order to improve the synchronous and stable turning of the two turning devices, the turning motor 114 is preferably a servo motor, and the motor reducer 109 is preferably a planetary reducer.
The two servo motors synchronously rotate, the rotating shaft 112 is driven to rotate around the axis of the motor reducer 109 after being reduced by the motor reducer 109 and the transmission gear set, and the two rotary tables 101 synchronously drive the workpiece clamping device 90 to clamp the workpiece to turn over plus and minus 180 degrees integrally. Along with the increase of the service time, the gear wear is more, and the transmission clearance is bigger, therefore, when the transmission clearance is big and the upset is unstable, can use the screw to push up reduction gear board 111, adjust the clearance between the gear pair, make it reach ideal effect.
Referring to fig. 1, the first robot arm 40 and the second robot arm 50 have the same structure, and are three-coordinate robot arms capable of moving along three coordinate axes, i.e., x, y, and z. The structure and function of the first robot arm 40 will be described below by way of example, and the first robot arm 40 includes a forward/backward movement arm 41, a lift arm 43, and a lateral movement arm 42. The front and rear moving arm 41 is slidably mounted on the top platform of the left base 20 in a front-and-rear manner, the lifting arm 43 is vertically fixed on the upper side surface of the front and rear moving arm 41, the transverse moving arm 42 and the lifting arm 43 are arranged in a cross manner, and the transverse moving arm 42 can lift up and down along the lifting arm 43; one end of the transverse moving arm 42 extending to the clamping mechanism is provided with a transverse moving mechanism, and the transverse moving mechanism comprises two guide rails 424, two sliding blocks 423, a spring guide rod 421, a left side spiral spring 422, a right side spiral spring 427, two connecting seats 425 and a cross arm sliding plate 426. Two guide rails 424 are transversely arranged on the transverse moving arm 42 in parallel, the guide rails 424 are slidably connected with the sliding blocks 423, and the cross arm sliding plate 426 is fixed on the two sliding blocks 423. A spring guide rod 421 is arranged between the two guide rails 424 in parallel, the spring guide rod 421 is fixedly installed on the transverse moving arm 42 through a support, the two connecting seats 425 are fixed on the inner side surface of the cross arm sliding plate 426 at intervals, the spring guide rod 421 passes through the central through holes of the two connecting seats 425, two ends of the spring guide rod 421 respectively extend out of the two connecting seats 425, the left extending end is sleeved with a left spiral spring 422, and the right extending end is sleeved with a right spiral spring 427; one end of the left side spiral spring 422 abuts against the left side inner wall of the cross arm sliding plate 426, and the other end abuts against the left side connecting seat 425; one end of right coil spring 427 abuts against the right inside wall of cross arm slide 426 and the other end abuts against right connecting seat 425.
The welding mechanism 80 comprises a cross fine adjustment mechanism 81, a welding gun 82, a gun clamp 83, a fixing rod 84, a connecting rod 85, a tracking guide wheel 86 and a locking handle 87. The cross fine adjustment mechanism 81 is fixedly arranged on the cross arm sliding plate 426, the welding gun 82 is arranged on the cross fine adjustment mechanism 81 through a gun clamp 83, the cross fine adjustment mechanism 81 is in the prior art, and the welding gun 82 is adjusted to move up and down and left and right through manually adjusting a transverse adjustment mechanism and a longitudinal adjustment mechanism of the cross fine adjustment mechanism 81, so that the distance between the welding gun 82 and the tracking guide wheel 86 is adjusted. The installation angle of the welding gun 82 is adjusted by rotating the gun clamp 83, and after the angle adjustment is completed, the locking handle 87 is screwed down to fix the gun clamp 83 and the welding gun 82. The fixed rod 84 and the connecting rod 85 form a guide wheel bracket, one end of the fixed rod 84 is fixed on the cross arm sliding plate 426, and the other end of the fixed rod horizontally extends out for connecting the connecting rod 85; the upper end of the connecting rod 85 is vertically fixed at the extending end of the fixing rod 84, the lower end of the connecting rod 85 is rotatably connected with a tracking guide wheel 86 through a rotating shaft, and the peripheral surface of the tracking guide wheel 86 is in rolling contact with the side surface of the radiator water chamber.
The spring guide rod 421, the left side spiral spring 422, the right side spiral spring 427, the two connecting seats 425, the cross arm sliding plate 426, the fixed rod 84, the connecting rod 85 and the tracking guide wheel 86 form a welding gun welding seam mechanical tracking device, in the welding process, when the tracking guide wheel 96 is close to the side surface of the radiator water chamber, the right side compression spring 427 is stressed and compressed, the counter-acting force of the compression spring forces the tracking guide wheel to be closely attached to the side surface of the water chamber, when the tracking guide wheel 96 is far away from the side surface of the radiator water chamber, the left side compression spring 422 is stressed and compressed, and the counter-acting force of the compression spring forces the tracking guide wheel to be.
The wire feeder 70 includes a wire feeder 71, a wire reel 72, and a wire feeder base 73, the wire feeder 71 is fixedly mounted on the traverse arm 42 via the wire feeder base 73, the wire reel 72 is connected to the wire feeder 71 for feeding a welding wire to the wire feeder, and the wire feeder 71 is for feeding the welding wire to a welding gun 82. The wire feeder 70 is conventional and its construction and principles will not be described in detail herein.
The working mode of the device is as follows:
firstly, starting a transverse moving motor 61, adjusting the distance between a left base 20 and a right base 30 to adapt to radiators with different widths, and fixing the right base 30 by using the self-locking function of a worm gear reducer 62 after the adjustment;
clamping a workpiece; the assembled radiator is horizontally placed on the radiating copper plates 95 of the two clamp frameworks, the front end face of the radiator abuts against the heads of the stop blocks 12, the left side face of the radiator abuts against the heads of the stop heads 9 of the positioning blocks, the right abutting cylinder 910 is opened to abut against a workpiece leftwards, so that the radiator cannot move leftwards, rightwards, forwards and backwards, then the pressing cylinder 96 is opened, the lower pressing head of the pressing cylinder 96 moves downwards to press the radiator from the upper side, and the workpiece is clamped completely;
adjusting the positions of the welding gun 82 and the tracking guide wheel 96 to enable the welding gun 82 to be aligned with the welding seam 3, enabling the tracking guide wheel 96 to be attached to the side face of the radiator water chamber, fixing the cross arm sliding plate 426, enabling the welding gun 82 and the tracking guide wheel 86 to be in a relatively static state all the time in the welding process, and enabling the left spiral spring 422 and the right spiral spring 427 to be in a pre-compression state;
firstly, welding two welding seams on the front surface of a workpiece, driving two welding mechanisms 80 to move from front to back by a first mechanical arm 40 and a second mechanical arm 50, enabling a tracking guide wheel 96 to walk linearly along the side surface of a water chamber, and constraining a gun head of a welding gun 82 to be aligned with the position of the welding seam 3;
after the front side is welded, the mechanical arm is removed, the overturning motor 114 is started, the overturning device overturns the radiator by-180 degrees to enable the bottom surface of the workpiece to be upward, and then two welding seams on the back side of the workpiece are welded; after welding, the turnover device turns the whole radiator by +180 degrees again, so that the workpiece clamping device 80 returns to the initial position, the pressing cylinder 96 and the jacking cylinder 910 are released, the machined workpiece is taken out, and then a new workpiece is placed for next round of welding.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.
Claims (10)
1. A double-gun automatic welding device for an automobile water tank radiator is characterized by comprising a base, a left base, a right base, a first mechanical arm, a second mechanical arm, a transverse movement driving device, a wire feeding mechanism, a welding mechanism, a workpiece clamping device and a turnover device, wherein the left base is fixedly arranged on the left side of the base, the right base is transversely movably arranged on the right side of the base, the transverse movement driving device is used for driving the right base to transversely move along the base, and the right base is locked after the right base is moved in place; the first mechanical arm and the second mechanical arm are respectively arranged on the left base and the right base, and the two mechanical arms have the same structure and are three-coordinate mechanical arms capable of moving along x, y and z axes; the wire feeding mechanism and the welding mechanism are arranged in a matched mode, the left wire feeding mechanism and the welding mechanism are installed on the first mechanical arm and driven by the first mechanical arm to weld along the left welding seam in a moving mode, and the right wire feeding mechanism and the welding mechanism are installed on the second mechanical arm and driven by the second mechanical arm to weld along the right welding seam in a moving mode; the two turnover devices are symmetrically arranged on the left base and the right base respectively, and the two turnover devices synchronously move to realize the integral turnover of the workpiece clamping device; the workpiece clamping device comprises a first clamping mechanism and a second clamping mechanism, the first clamping mechanism is installed on the left base through the left side overturning device, the second clamping mechanism is installed on the right base through the right side overturning device, and the two clamping mechanisms are matched to clamp a radiator workpiece to be welded.
2. The automatic welding device for the double guns of the radiator of the automobile water tank as claimed in claim 1, wherein the welding mechanism is provided with a welding seam mechanical tracking device, and the welding seam mechanical tracking device comprises a spring guide rod, a first spiral spring, a second spiral spring, a guide rod connecting seat, a cross arm sliding plate, a guide wheel bracket and a tracking guide wheel; the cross arm sliding plate is slidably mounted on a transverse moving arm of the mechanical arm, the spring guide rod is arranged between the cross arm sliding plate and the transverse moving arm and fixed on the transverse moving arm of the mechanical arm through two ends of a support, two guide rod connecting seats are arranged and fixed on the inner side surface of the cross arm sliding plate at intervals, the spring guide rod penetrates through two ends of a central through hole of the two connecting seats and respectively extends out of the two connecting seats, a first spiral spring is sleeved at a left extending end, a second spiral spring is sleeved at a right extending end, one end of the first spiral spring abuts against the inner wall of the left side of the cross arm sliding plate, and the; one end of the second spiral spring abuts against the inner wall of the right side of the cross arm sliding plate, and the other end of the second spiral spring abuts against the right side connecting seat; the guide wheel bracket and the welding gun are fixedly arranged on the cross arm sliding plate, one end of the guide wheel bracket is fixed on the cross arm sliding plate, and the other end of the guide wheel bracket is rotatably connected with the tracking guide wheel through a rotating shaft; the welding gun head is aligned with a welding seam of a radiator to be welded, and the peripheral surface of the tracking guide wheel is in rolling contact with the side surface of the radiator water chamber; when the tracking guide wheel is close to the radiator water chamber, the first spiral spring is pressed, and when the tracking guide wheel is far away from the radiator water chamber, the second spiral spring is pressed.
3. The automatic welding device for the double guns of the radiator of the automobile water tank as claimed in claim 2, wherein the welding gun is fixedly arranged on the cross arm sliding plate through a cross fine adjustment mechanism, the cross fine adjustment mechanism is provided with a transverse adjustment mechanism and a longitudinal adjustment mechanism, the welding gun is fixedly arranged on the cross fine adjustment mechanism through a gun clamp and a locking handle, the welding deflection angle is adjusted through the gun clamp, the welding gun is adjusted to move up and down and left and right through the transverse adjustment mechanism and the longitudinal adjustment mechanism, and therefore the distance between the welding gun and the tracking guide wheel is adjusted; the locking handle is used for fixing the welding gun after the angle adjustment is finished.
4. The double-gun automatic welding device for the radiator of the automobile water tank as claimed in claim 1 or 2, wherein a traverse guide rail and a rack are arranged at the right end of the upper side surface of the base, a guide rail sliding block is connected on the traverse guide rail in a sliding manner, and the guide rail sliding block is fixed on the bottom surface of the right base; the transverse moving driving device comprises a transverse moving motor and a worm gear reducer, the driving motor and the worm gear reducer are fixedly installed in a middle cavity of the right base, an output shaft of the worm gear reducer vertically extends downwards to be sleeved with a transmission gear, and the transmission gear and the rack form a gear-rack transmission pair.
5. The double-gun automatic welding device for the radiator of the automobile water tank as claimed in claim 1 or 2, wherein the first clamping mechanism comprises a first clamp framework, a pressing cylinder mounting seat, a positioning block retaining head, a retaining block and a retaining block fixing seat; the second clamping mechanism comprises a second clamp framework, a pressing cylinder mounting seat, a jacking cylinder and a jacking cylinder mounting seat; the baffle block is arranged at the front ends of the first clamp framework and the second clamp framework through the baffle block fixing seat and used for positioning the front end of the radiator; the positioning block retaining head is arranged on the first fixture framework through the positioning block seat, the head of the positioning block retaining head points to the left side face of the radiator, the jacking cylinders and the positioning block retaining heads are arranged in a one-to-one correspondence manner, the cylinder piston head of each jacking cylinder is arranged on the second fixture framework through the jacking cylinder mounting seat and points to one side of the positioning block retaining head on the right side face of the radiator, and the jacking cylinders are matched with the positioning block retaining heads and used for positioning two sides of the radiator; the compressing cylinder is arranged on the first clamp framework and the second clamp framework through the compressing cylinder mounting seat and used for compressing the rear radiator in a positioning mode.
6. The automatic double-gun welding device for the radiator of the automobile water tank is characterized in that the first clamp framework and the second clamp framework are provided with heat dissipation copper plates, and the heat dissipation copper plates are used for supporting the radiator and absorbing welding heat.
7. The automatic welding device for the double guns of the radiator of the automobile water tank as claimed in claim 6, wherein the fixture framework mainly comprises two aluminum profiles, a corner lining plate and a connecting angle plate, the two aluminum profiles are connected into an L-shaped bracket through the corner lining plate and the connecting angle plate, the openings of the two L-shaped brackets are opposite, the corner lining plate is connected to the outer sides of the two aluminum profiles, and the connecting angle plate is connected to the inner sides of the two aluminum profiles; the positioning block seat, the jacking cylinder mounting seat and the pressing cylinder mounting seat are fixedly mounted in the through groove of the horizontally arranged aluminum profile through special aluminum profile bolts respectively.
8. The double-gun automatic welding device for the radiator of the automobile water tank as claimed in claim 1 or 2, wherein the overturning device comprises a rotary disc, a tapered roller bearing, a bearing sleeve, a gear box, a rotary shaft gear, a driving gear, an overturning motor, a motor reducer, a gear box cover plate, a rotary shaft and a fixed connecting plate; the fixed connecting plate is used for installing and fixing the turnover device, and the rotary disc is used for connecting the workpiece clamping device; the fixed connecting plate, the bearing sleeve and the gear box are sequentially and fixedly connected, the rotating shaft is rotatably arranged in the bearing sleeve through a tapered roller bearing, one end of the rotating shaft penetrates through the fixed connecting plate and is fixedly connected with the rotary disk, and the other end of the rotating shaft extends into the box body of the gear box and is fixedly sleeved with the rotary shaft gear; the gear box cover plate is fixed at the top of the gear box through a screw and used for sealing the gear box body; the motor speed reducer and the overturning motor are fixed on the outer side surface of the gear box, the overturning motor and the speed reducer are coaxially arranged, the axis of the output shaft of the speed reducer is parallel to the axis of the rotating shaft, the output shaft of the speed reducer extends into the gear box body, the driving gear is fixedly sleeved in the gear box body, and the driving gear and the rotating shaft gear form a reduction gear set.
9. The automatic welding device for the double guns of the radiator of the car tank as claimed in claim 8, wherein the overturning motor is a servo motor, and the motor reducer is a planetary reducer.
10. The automatic welding device for the double guns for the radiator of the automobile water tank as claimed in claim 1, wherein the first mechanical arm and the second mechanical arm each comprise a front and rear moving arm, a lifting arm and a transverse moving arm; the front and rear moving arms are slidably arranged on the top surfaces of the left base or the right base in a front-and-rear mode, the lifting arms are vertically fixed on the upper side surfaces of the front and rear moving arms, the transverse moving arms and the lifting arms are arranged in a cross mode, and the transverse moving arms can lift up and down along the lifting arms; the end, extending to the workpiece, of the transverse moving arm is provided with a transverse moving mechanism, the transverse moving mechanism comprises two guide rails, a sliding block and a transverse arm sliding plate, the two guide rails are transversely arranged on the transverse moving arm in parallel, the sliding block is connected onto the guide rails in a sliding mode, and the transverse arm sliding plate is fixed onto the two sliding blocks and used for being connected with a welding gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011114365.9A CN112264696A (en) | 2020-10-19 | 2020-10-19 | Double-gun automatic welding device for radiator of automobile water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011114365.9A CN112264696A (en) | 2020-10-19 | 2020-10-19 | Double-gun automatic welding device for radiator of automobile water tank |
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| CN112264696A true CN112264696A (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011114365.9A Pending CN112264696A (en) | 2020-10-19 | 2020-10-19 | Double-gun automatic welding device for radiator of automobile water tank |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084431A (en) * | 2021-04-09 | 2021-07-09 | 四川科志人防设备股份有限公司 | Clamp in double-station welding device |
| CN113523685A (en) * | 2021-07-19 | 2021-10-22 | 岳阳高澜节能装备制造有限公司 | Welding robot for refrigeration water tank |
| CN114083221A (en) * | 2021-11-17 | 2022-02-25 | 安徽众盛兴自动化设备有限公司 | Automatic assembly welding system |
| CN114160387A (en) * | 2021-12-20 | 2022-03-11 | 上海三环弹簧有限公司 | Spring deflection mechanism for paint dispensing |
| CN115070331A (en) * | 2022-07-20 | 2022-09-20 | 山东工蜂激光科技有限公司 | Numerical control welding machine and welding process thereof |
| CN116673673A (en) * | 2023-07-04 | 2023-09-01 | 绍兴三雄钢结构有限公司 | Automatic gas shielded welder |
| CN117359062A (en) * | 2023-11-07 | 2024-01-09 | 珠海云鼎立激光科技有限公司 | Intelligent welding robot and control system thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113084431A (en) * | 2021-04-09 | 2021-07-09 | 四川科志人防设备股份有限公司 | Clamp in double-station welding device |
| CN113523685A (en) * | 2021-07-19 | 2021-10-22 | 岳阳高澜节能装备制造有限公司 | Welding robot for refrigeration water tank |
| CN114083221A (en) * | 2021-11-17 | 2022-02-25 | 安徽众盛兴自动化设备有限公司 | Automatic assembly welding system |
| CN114160387A (en) * | 2021-12-20 | 2022-03-11 | 上海三环弹簧有限公司 | Spring deflection mechanism for paint dispensing |
| CN114160387B (en) * | 2021-12-20 | 2022-12-06 | 上海三环弹簧有限公司 | Spring deflection mechanism for paint dispensing |
| CN115070331A (en) * | 2022-07-20 | 2022-09-20 | 山东工蜂激光科技有限公司 | Numerical control welding machine and welding process thereof |
| CN115070331B (en) * | 2022-07-20 | 2024-01-12 | 山东工蜂激光科技有限公司 | Numerical control welding machine and welding process thereof |
| CN116673673A (en) * | 2023-07-04 | 2023-09-01 | 绍兴三雄钢结构有限公司 | Automatic gas shielded welder |
| CN117359062A (en) * | 2023-11-07 | 2024-01-09 | 珠海云鼎立激光科技有限公司 | Intelligent welding robot and control system thereof |
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