CN112518124A - Wire feeding laser welding device and welding method thereof - Google Patents
Wire feeding laser welding device and welding method thereof Download PDFInfo
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- CN112518124A CN112518124A CN202011505394.8A CN202011505394A CN112518124A CN 112518124 A CN112518124 A CN 112518124A CN 202011505394 A CN202011505394 A CN 202011505394A CN 112518124 A CN112518124 A CN 112518124A
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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Abstract
The invention provides a wire-feeding laser welding device, which comprises a tool rack, a positioning plate, an annular plate, a laser head and a wire feeding head, wherein the laser head is arranged at the bottom side of the tool rack through the positioning plate, the annular plate is fixed at the bottom side of the positioning plate, an annular sliding groove is circumferentially arranged on the annular sliding groove, at least two groups of sliding blocks are connected in the annular sliding groove, a compression rod is arranged in each sliding block, the compression rod is correspondingly connected with the wire feeding head, the wire feeding head comprises a positioning rod which can be vertically connected with the compression rod, a wire feeding pipe fixed at the bottom end of the positioning rod and a convex strip arranged at one side of the top end of the positioning rod, a plurality of tooth grooves which can be correspondingly clamped and positioned with the convex strip are circumferentially fixed on the positioning plate, a spring is sleeved outside the compression rod, one end of the spring is abutted against the opening end of the annular, the welding operation of the circumferential closed track of the starting point and the end point is completed simply and conveniently, and the adjustment cost is also lower.
Description
Technical Field
The invention relates to a laser welding technology, in particular to a wire feeding laser welding device and a welding method thereof.
Background
Laser welding is an efficient precision welding method using a laser beam with high energy density as a heat source; it is also one of the important aspects of the application of the laser material processing technology, and in order to implement more intelligent and automated welding operation, in the prior art, it is often necessary to fixedly mount a laser welding head at the end of the sixth shaft of a six-shaft robot, and implement the welding track motion of the laser welding head with the aid of the six-shaft robot, but when a welding track with a circumferentially closed starting point and end point needs to be processed, such as a rectangular welding track, at this time, when the laser head passes through an inflection point, it needs to rotate 90 degrees, and in order to ensure that the wire feeding head is always located at the front side of the welding laser head, and ensure the welding quality, each rotation is rotated toward one direction, so that when one circumferential direction is completed, it needs to implement the rotation of the end of the sixth shaft of the six-shaft robot by 360 degrees, and in the prior art, when the rotation angle of the six-shaft robot needs to be considered, the software cost increases and the limitation of the trachea following signal line on the end flange cannot be, therefore, a customer is careful about the rotation of the six-axis robot at the end of the sixth circle, and many six-axis robot devices are generally arranged to 350 degrees, so that if the rotation angle needs to be increased, the refitting cost is high, but the rotation angle cannot complete the welding operation on a rectangular welding track.
Therefore, there is an urgent need for a wire feeding laser welding device and a welding method thereof, which have a simple structure, can assist a six-axis robot, can simply and conveniently complete the welding operation of a circumferential closed track of a starting point and a terminal point, and has a low adjustment cost.
Disclosure of Invention
The invention aims to provide a wire feeding laser welding device and a welding method thereof, which have simple structure, can assist a six-axis robot, can simply and conveniently complete the welding operation of a circumferential closed track of a starting point and a finishing point, and has lower adjustment cost.
The invention provides the following technical scheme:
a wire feeding laser welding device comprises a tool frame, a positioning plate, an annular plate, a laser head and a wire feeding head, wherein the top side of the tool frame is arranged at the end of a sixth shaft of a six-shaft robot, the laser head is arranged at the bottom side of the tool frame through the positioning plate, the annular plate is fixedly arranged at the bottom side of the positioning plate, the circumferential outer side of the annular plate is provided with an annular chute far away from a central opening of the annular plate, at least two groups of sliding blocks are connected in the annular chute in a sliding way, a compression rod is arranged in the sliding block, the end part of the compression rod can extend out of the annular chute, the wire feeding head is connected with the wire feeding head in a one-to-one correspondence manner, the wire feeding head comprises a positioning rod which can be vertically connected with the compression rod, a wire feeding pipe fixed at the bottom end of the positioning rod and raised strips arranged at one side of the top end of the positioning, just the compression pole has cup jointed a spring outward, the one end butt of spring is in the open end of annular spout, and other end butt is in the spacing stopper side of compression pole tip, and be used for compressing spacing stopper orientation the center pulling of locating plate the locating lever, just locating lever one side still is fixed with two sets of bracing pieces, and two sets of bracing piece symmetries set up the both sides of compression pole, just the tip of bracing piece still is equipped with but the butt is spacing the arc piece in the annular plate outside.
Preferably, the sliding block with send the silk head and be four groups that correspond the cooperation, just send the silk head alternate 90 degrees and distribute in the periphery of locating plate.
Preferably, two groups of driving wheels which are arranged oppositely are arranged in the wire feeding pipe, and the two groups of driving wheels can drive the welding wires to move under the driving of the micro motor.
Preferably, the gap between adjacent two sets of gullets is 1 °.
Preferably, at least one group of air pipes are arranged in the wire feeding pipe.
Preferably, the bottom side of the annular plate is also provided with a protective side plate annularly arranged on the periphery of the laser head.
A wire-feeding laser welding method is based on the wire-feeding laser welding device, and the welding method comprises the following steps:
s1: determining the number of the filament feeding heads, and determining the angle between two adjacent groups of filament feeding heads by determining the matching position of the positioning rod and the tooth socket;
s2: laser of the laser head irradiates a starting point of a to-be-welded track of a workpiece, a wire feeding pipe in a wire feeding head positioned in front of the movement track of the laser head drives welding wires to the surface of the workpiece, the welding wires are melted by laser radiation and are transited to the surface of the workpiece, the tail end of a sixth shaft of the six-shaft robot drives the laser head to move along the welding track until reaching an inflection point of the track, when the number of the wire feeding heads is the same as the number of the inflection points, angle setting of the wire feeding head can be completed in S1, the welding wires positioned in front of the laser head on the to-be-welded track at the inflection point can be directly fed to the surface of the workpiece through the wire feeding pipe, the welding wires at a previous station are far away from the surface of the workpiece, the welding wires are melted by the laser radiation and are transited to the surface of the workpiece, welding at the welding track after the welding can be continuously completed, when, judging the angle difference with the corner at the inflection point, and further rotating the end of the sixth shaft of the six-shaft robot in a reciprocating manner according to the angle difference to enable the welding wire to rotate to the front of the laser head alternately for welding operation;
s3: when the laser of the laser head irradiates a to-be-welded track of the workpiece for a circle, the wire feeding pipe returns to the starting point of S2 again, the wire feeding pipe stops feeding the wire and quickly withdraws the welding wire; and the laser head stops radiating, and the molten wire on the workpiece is solidified and molded.
Preferably, the welding wire and the laser optical axis sent by the laser head form an included angle of 30-75 degrees for carrying out preposed wire feeding.
The invention has the beneficial effects that: through setting up annular spout, and set up the multiunit sliding block in annular spout for can connect the multiunit and send the stub bar, and then the location of cooperation tooth's socket realization silk feeding head, and set for the corresponding or different quantity of silk feeding head with the welding motion orbit inflection point, and then when reducing and accomplish a circumferential motion orbit, the cost of the terminal rotatory angle of sixth axis of six robots, the comparatively simple and convenient completion of doing simultaneously is to the welding operation of starting point terminal point circumference closed orbit, and the adjustment cost is also lower.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a structural sectional view of the present invention in example 1;
FIG. 2 is a top view of the positioning plate of FIG. 1;
FIG. 3 is a structural sectional view of the present invention in example 2;
FIG. 4 is a top view of the positioning plate of FIG. 3;
notation in the figure: 1 is the frock frame, 2 is the locating plate, 3 is the annular board, 4 is the laser head, 5 is sending the silk head, 6 is annular spout, 7 is the sliding block, 8 is the compression pole, 13 is the protection curb plate, 14 is the laser, 51 is the locating lever, 52 is the wire feeding pipe, 53 is protruding strip, 54 is the tooth's socket, 55 is the spring, 56 is the drive wheel, 57 is the welding wire, 58 is the air feeding pipe, 59 is the bracing piece.
Detailed Description
Example 1
When the movement track to be welded is rectangular and the number of the wire feeding heads 5 is four, the wire feeding laser welding device shown in fig. 1 to 2 is combined, in this embodiment, the welding device comprises a tool rack 1, a positioning plate 2, an annular plate 3, a laser head 4 and wire feeding heads 5, wherein the top side of the tool rack 1 is installed at the movable end part of a six-axis robot, the laser head 4 is installed at the bottom side of the tool rack 1 through the positioning plate 2, the annular plate 3 is fixedly arranged at the bottom side of the positioning plate 2, an annular chute 6 far away from the central opening of the annular plate 3 is arranged at the circumferential outer side of the annular plate 3, two groups of sliding blocks 7 are connected in the annular chute 6 in a sliding manner, a compression rod 8 is arranged in each sliding block 7, the end part of each compression rod 8 can extend out of the annular chute 6, and the wire feeding heads 5 are connected in one-to-one correspondence, each, The positioning plate 2 is circumferentially and fixedly provided with a plurality of tooth grooves 54 which can be clamped and positioned corresponding to the convex strips 53, a spring 55 is sleeved outside the compression rod 8, one end of the spring 55 abuts against the opening end of the annular chute 6, the other end of the spring 55 abuts against the side of the limiting plug at the end part of the compression rod 8 and is used for compressing the limiting plug to pull the positioning rod 51 towards the center of the positioning plate 2, two groups of supporting rods 59 are further fixed on one side of the positioning rod, the two groups of supporting rods 59 are symmetrically arranged on the two sides of the compression rod, and the end parts of the supporting rods are further provided with arc-shaped blocks which can abut against and be limited on the outer side of the annular plate;
the sliding blocks 7 and the wire feeding heads 5 are four groups which are correspondingly matched, and the wire feeding heads 5 are distributed on the periphery of the positioning plate 2 at intervals of 90 degrees;
two groups of driving wheels 56 which are arranged oppositely are arranged in the wire feeding pipe 52, and the two groups of driving wheels 56 can drive the welding wires 57 to move under the driving of the micro motor;
the interval between two adjacent groups of tooth grooves 54 is 1 degree;
at least one group of air pipes 58 are arranged in the wire feeding pipe 52;
the bottom side of the annular plate 3 is also provided with a protective side plate 13 annularly arranged on the periphery of the laser head 4;
a wire feeding laser welding method is based on the wire feeding laser welding device, and the welding method comprises the following steps:
s1: determining the number of the wire feeding heads 5, and determining the angle between two adjacent groups of the wire feeding heads 5 by determining the positions of the positioning rods 51 matched with the tooth grooves 54;
s2: the laser 14 of the laser head 4 irradiates the middle point of one side of a to-be-welded track rectangle of a workpiece as a starting point, a wire feeding pipe 52 in a wire feeding head 5 drives a welding wire 57 positioned in front of the movement of the laser head 4 to the surface of the workpiece, the welding wire 57 is irradiated and melted by laser and transits to the surface of the workpiece, the tail end of a sixth shaft of the six-shaft robot drives the laser head 4 to move along the welding track until reaching an inflection point of the rectangle, at the moment, four groups of wire feeding heads 5 set in S1 are distributed on the periphery of a positioning plate 2 taking the laser head 4 as a center at intervals of 90 degrees, at the moment, the welding wire 57 positioned in front of the movement of the laser head 4 on the to-be-welded track at the inflection point can be directly sent to the surface of the workpiece through the wire feeding pipe 52, the welding wire 57 at the previous station is far away from the surface of the workpiece, the welding wire 57, circulating the inflection point operation until meeting the next inflection point;
s3: when the laser of the laser head 4 irradiates the to-be-welded track of the workpiece for one circle and returns to the starting point in S2 again, the wire feeding pipe 52 stops feeding the wire and rapidly withdraws the welding wire 57; and the laser head 4 stops radiating, and the melting wire on the workpiece is solidified and formed;
and the welding wire and the laser optical axis sent by the laser head form an included angle of 30-75 degrees for carrying out preposed wire feeding.
Example 2
When the movement track to be welded is rectangular and the number of the wire feeding heads 5 is two, the wire feeding laser welding device shown in fig. 3 to 4 is combined, in this embodiment, the device comprises a tool rack 1, a positioning plate 2, an annular plate 3, a laser head 4 and wire feeding heads 5, wherein the top side of the tool rack 1 is installed at the end of the sixth shaft of the six-shaft robot, the laser head 4 is installed at the bottom side of the tool rack 1 through the positioning plate 2, the annular plate 3 is fixedly arranged at the bottom side of the positioning plate 2, an annular chute 6 far away from the central opening of the annular plate 3 is arranged at the circumferential outer side of the annular plate 3, two groups of sliding blocks 7 are connected in the annular chute 6 in a sliding manner, a compression rod 8 is arranged in each sliding block 7, the end part of each compression rod 8 can extend out of the annular chute 6 and is connected with the wire feeding heads 5 in one-to-one correspondence, each wire, The positioning plate 2 is circumferentially and fixedly provided with a plurality of tooth grooves 54 which can be clamped and positioned corresponding to the convex strips 53, a spring 55 is sleeved outside the compression rod 8, one end of the spring 55 abuts against the opening end of the annular chute 6, the other end of the spring 55 abuts against the side of the limiting plug at the end part of the compression rod 8 and is used for compressing the limiting plug to pull the positioning rod 51 towards the center of the positioning plate 2, two groups of supporting rods 59 are further fixed on one side of the positioning rod and are symmetrically arranged on two sides of the compression rod, and arc-shaped blocks which can abut against and limit the outer side of the annular plate are further arranged at the end parts of the supporting rods;
two sets of driving wheels 56 are oppositely arranged in the wire feeding pipe 52, and the two sets of driving wheels 56 can drive the welding wire 57 to move under the driving of the micro motor.
The interval between two adjacent groups of tooth grooves 54 is 1 degree;
at least one group of air pipes 58 are arranged in the wire feeding pipe 52;
the bottom side of the annular plate 3 is also provided with a protective side plate 13 annularly arranged on the periphery of the laser head 4;
a wire feeding laser welding method is based on the wire feeding laser welding device, and the welding method comprises the following steps:
s1: determining the number of the wire feeding heads 5, and determining the angle between two adjacent groups of the wire feeding heads 5 by determining the positions of the positioning rods 51 matched with the tooth grooves 54;
s2: laser of the laser head 4 irradiates a starting point of a to-be-welded track of a workpiece, a wire feeding pipe 52 in the wire feeding head 5 drives welding wires 57 located in front of the movement of the laser head 4 to the surface of the workpiece, the welding wires 57 are melted by laser radiation and transit to the surface of the workpiece, the sixth axis end of the six-axis robot drives the laser head 4 to move along the welding track until reaching an inflection point of the track, when the number of the wire feeding heads 5 is the same as the number of the inflection points, the angle setting of the wire feeding head 5 can be completed in S1, the welding wires 57 located in front of the laser head 4 on the to-be-welded track at the inflection point can be directly sent to the surface of the workpiece through the wire feeding pipe 52, the welding wires 57 at the previous station are far away from the surface of the workpiece, the welding wires 57 are melted by the laser radiation and transit to the surface of the workpiece, the welding track after the inflection point can be continuously completed, the number of the wire feeding, the set angle is 180 degrees, so that at the inflection point, the other wire feeding head 5 can rotate by 90 degrees through the operation of the six-axis robot to the front of the welding track of the welding head belt, and when the wire feeding head moves to the next inflection point, the two groups of wire feeding heads 5 are alternated again, and the rotation operation of the tail end of the sixth axis of the six-axis robot only needs to rotate by 90 degrees in the reverse direction again, and the wire feeding head does not need to rotate by 90 degrees in one direction through one inflection point until the wire feeding head rotates by 360 degrees to complete the track, so that the welding operation on the circumferential closed track of the starting point and the tail end can be completed simply and conveniently, and the adjustment cost is also lower;
s3: when the laser of the laser head 4 irradiates the to-be-welded track of the workpiece for one circle and returns to the starting point of S2 again, the wire feeding pipe 52 stops feeding the wire and rapidly withdraws the welding wire 57; and the laser head 4 stops radiating, and the melting wire on the workpiece is solidified and formed;
and the welding wire and the laser optical axis sent by the laser head form an included angle of 30-75 degrees for carrying out preposed wire feeding.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A laser welding device for feeding wires is characterized by comprising a tool frame, a positioning plate, an annular plate, a laser head and a wire feeding head, wherein the top side of the tool frame is arranged at the end of a sixth shaft of a six-shaft robot, the laser head is arranged at the bottom side of the tool frame through the positioning plate, the annular plate is fixedly arranged at the bottom side of the positioning plate, an annular chute far away from a central opening of the annular plate is arranged at the circumferential outer side of the annular plate, at least two groups of sliding blocks are connected in the annular chute in a sliding manner, a compression rod is arranged in the sliding block, the end part of the compression rod can extend out of the annular chute, the annular chute is connected with the wire feeding head in a one-to-one correspondence manner, the wire feeding head comprises a positioning rod which can be vertically connected with the compression rod, a wire feeding pipe fixed at the bottom end of the positioning rod and raised strips arranged on one side of the top end of the positioning rod, just the compression pole has cup jointed a spring outward, the one end butt of spring is in the open end of annular spout, and other end butt is in the spacing stopper side of compression pole tip, and be used for compressing spacing stopper orientation the center pulling of locating plate the locating lever, just locating lever one side still is fixed with two sets of bracing pieces, and two sets of bracing piece symmetries set up the both sides of compression pole, just the tip of bracing piece still is equipped with but the butt is spacing the arc piece in the annular plate outside.
2. The wire-feed laser welding device according to claim 1, wherein the sliding block and the wire-feed heads are four groups which are correspondingly matched, and the wire-feed heads are distributed on the periphery of the positioning plate at intervals of 90 °.
3. The wire-feed laser welding device according to claim 1, wherein two sets of driving wheels are disposed in the wire-feed tube and are opposite to each other, and the two sets of driving wheels can drive the welding wire to move under the driving of the micro motor.
4. The wire feed laser welding apparatus of claim 1 wherein the gap between adjacent sets of gullets is 1 °.
5. The wire-feed laser welding device of claim 1, wherein at least one set of air pipes are further disposed in the wire-feed pipe.
6. The wire-feed laser welding device of claim 1, wherein a protective side plate is disposed at the bottom of the annular plate and surrounds the laser head.
7. A wire-feed laser welding method, characterized in that a wire-feed laser welding apparatus according to any one of claims 1 to 6 is used, the welding method comprising the steps of:
s1: determining the number of the filament feeding heads, and determining the angle between two adjacent groups of filament feeding heads by determining the matching position of the positioning rod and the tooth socket;
s2: laser of the laser head irradiates a starting point of a to-be-welded track of a workpiece, a wire feeding pipe in a wire feeding head positioned in front of the movement track of the laser head drives welding wires to the surface of the workpiece, the welding wires are melted by laser radiation and are transited to the surface of the workpiece, the tail end of a sixth shaft of the six-shaft robot drives the laser head to move along the welding track until reaching an inflection point of the track, when the number of the wire feeding heads is the same as the number of the inflection points, angle setting of the wire feeding head can be completed in S1, the welding wires positioned in front of the laser head on the to-be-welded track at the inflection point can be directly fed to the surface of the workpiece through the wire feeding pipe, the welding wires at a previous station are far away from the surface of the workpiece, the welding wires are melted by the laser radiation and are transited to the surface of the workpiece, welding at the welding track after the welding can be continuously completed, when, judging the angle difference with the corner at the inflection point, and further rotating the end of the sixth shaft of the six-shaft robot in a reciprocating manner according to the angle difference to enable the welding wire to rotate to the front of the laser head alternately for welding operation;
s3: when the laser of the laser head irradiates a to-be-welded track of the workpiece for a circle, the wire feeding pipe returns to the starting point of S2 again, the wire feeding pipe stops feeding the wire and quickly withdraws the welding wire; and the laser head stops radiating, and the molten wire on the workpiece is solidified and molded.
8. A wire-feeding laser welding method as claimed in claim 7, characterized in that the wire is fed forward at an angle of 30-75 ° with respect to the optical axis of the laser beam emitted from the laser head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011505394.8A CN112518124A (en) | 2020-12-18 | 2020-12-18 | Wire feeding laser welding device and welding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011505394.8A CN112518124A (en) | 2020-12-18 | 2020-12-18 | Wire feeding laser welding device and welding method thereof |
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| CN112518124A true CN112518124A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011505394.8A Pending CN112518124A (en) | 2020-12-18 | 2020-12-18 | Wire feeding laser welding device and welding method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713924A (en) * | 2022-01-29 | 2022-07-08 | 武汉比天科技有限责任公司 | Laser soft soldering device for dense pin connector |
| CN116213867A (en) * | 2023-05-10 | 2023-06-06 | 定州市宏远机械有限公司 | Integrated mobile welding device for special-shaped side plates of automobile cargo box |
| CN118123313A (en) * | 2024-05-10 | 2024-06-04 | 成都工业学院 | Pipeline welding robot and welding method thereof |
-
2020
- 2020-12-18 CN CN202011505394.8A patent/CN112518124A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713924A (en) * | 2022-01-29 | 2022-07-08 | 武汉比天科技有限责任公司 | Laser soft soldering device for dense pin connector |
| CN114713924B (en) * | 2022-01-29 | 2024-05-10 | 武汉比天科技有限责任公司 | Laser soldering device for dense pin connector |
| CN116213867A (en) * | 2023-05-10 | 2023-06-06 | 定州市宏远机械有限公司 | Integrated mobile welding device for special-shaped side plates of automobile cargo box |
| CN116213867B (en) * | 2023-05-10 | 2023-09-26 | 定州市宏远机械有限公司 | Integrated mobile welding device for special-shaped side plates of automobile cargo box |
| CN118123313A (en) * | 2024-05-10 | 2024-06-04 | 成都工业学院 | Pipeline welding robot and welding method thereof |
| CN118123313B (en) * | 2024-05-10 | 2024-07-02 | 成都工业学院 | Pipeline welding robot |
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