CN114453745B - Preheating laser with double-ring structure - Google Patents
Preheating laser with double-ring structure Download PDFInfo
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- CN114453745B CN114453745B CN202210136827.XA CN202210136827A CN114453745B CN 114453745 B CN114453745 B CN 114453745B CN 202210136827 A CN202210136827 A CN 202210136827A CN 114453745 B CN114453745 B CN 114453745B
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- 238000003466 welding Methods 0.000 claims abstract description 172
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000009977 dual effect Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
-
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
-
- 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
- B23K26/16—Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a preheating laser with a double-ring structure, which comprises a double-ring laser welding head and a laser preheating head arranged in the advancing direction of a welding line, wherein the laser preheating head can independently move along the welding line through a first driving system to finish the preheating of the welding line, the double-ring laser welding head and the laser preheating head can synchronously move along the welding line after being connected to finish the welding of the welding line, and the welding line is selectively thermally compensated when the laser preheating head and the double-ring laser welding head synchronously move; and a temperature sensor for detecting the preheating temperature is arranged on the double-ring laser welding head, and when the temperature sensor detects that the welding line is unqualified in preheating in the welding process, the second driving system is controlled by the temperature sensor to drive the laser preheating head to move to the position where the double-ring laser welding head stays along the opposite direction of the welding line. When the laser preheating head and the double-ring laser welding head synchronously move, the laser preheating head can perform thermal compensation on the welding line with the preheating temperature not reaching the standard, so that the welding line is heated more uniformly, and the welding quality and the welding efficiency are ensured.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a preheating laser with a double-ring structure.
Background
In the laser welding process, the laser power density is too high, the workpiece absorbs more laser energy in a short time, the material is seriously vaporized, the local temperature is too high, and the molten pool reaction is severe and welding spatter is easily formed. The preheating has the functions of reducing the temperature difference of the welding joint area and reducing the internal stress generated in the welding process, so that the workpiece to be welded is generally required to be preheated before laser welding at present so as to ensure the welding quality.
At present, china patent discloses a laser welding device with a preheating function and a preheating welding method, the laser welding device comprises a laser preheating system and a laser welding platform, a welding part weld joint is preheated by a large-size diameter laser beam of a semiconductor laser, welding parts with different structures and sizes can be heated, applicability is strong, heating efficiency is high, a preheating area is precise, and the welding parts do not have the problems of unnecessary parts except the preheating weld joint and internal and external temperature differences. However, the laser preheating system and the laser welding platform are two sets of completely independent systems, namely, each set of system needs a corresponding driving system respectively and runs independently when moving mutually, after the laser preheating system firstly acts to complete preheating, the laser welding platform is put into operation to weld, but after the preheating of a workpiece to be welded is completed, temperature loss can occur in a short time, and if the temperature of a welding seam of the workpiece to be welded is reduced to a preset value and cannot be compensated, the welding quality is directly influenced.
In view of the above, the present invention proposes a preheating laser having a dual ring structure.
Disclosure of Invention
The present invention is directed to a preheating laser with a dual-ring structure, so as to solve the above-mentioned problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the preheating laser with the double-ring structure comprises a double-ring laser welding head and a laser preheating head arranged in the advancing direction of a welding line, wherein the laser preheating head can independently move along the welding line through a first driving system to finish the preheating of the welding line, the double-ring laser welding head and the laser preheating head can synchronously move along the welding line after being connected to finish the welding of the welding line, and the welding line is selectively thermally compensated when the laser preheating head and the double-ring laser welding head synchronously move; the double-ring laser welding head is provided with a temperature sensor for detecting the preheating temperature, the temperature sensor is in signal connection with the first driving system, and the double-ring laser welding head also comprises a second driving system for driving the laser preheating head to reciprocate along the welding line direction, and the temperature sensor is in signal connection with the second driving system; in the welding process, when the temperature sensor detects that the welding line is unqualified for preheating, the first driving system is controlled by the temperature sensor to stop moving, and the second driving system is controlled by the temperature sensor to drive the laser preheating head to move to a position where the double-ring laser welding head stays along the opposite direction of the welding line.
Preferably, the laser preheating device further comprises a mounting plate, limiting sliding rails are formed on two side walls of the inside of the mounting plate along the length direction of the mounting plate, a movable plate is mounted in the mounting plate, a gap is formed between the top of the movable plate and the top of the mounting plate, the movable plate is connected with the movable plate in a sliding manner through the limiting sliding rails on two sides of the mounting plate, the first driving system comprises a first servo motor for fixing the top of the movable plate, a motor shaft of the first servo motor downwards extends in the vertical direction and penetrates through the movable plate and then is fixedly connected with a gear, a rack is mounted on any inner side of the bottom of the mounting plate along the length direction of the inner side of the bottom of the mounting plate, the gear is meshed with the rack, and the laser preheating head is slidably mounted in a concave groove of the bottom of the movable plate.
Preferably, the second driving system comprises a second servo motor fixedly installed at the top of the moving plate, a sliding block and a sliding frame, wherein the sliding block and the sliding frame are slidably installed in the concave groove of the moving plate, a circular plate is fixedly connected to a motor shaft of the second servo motor after penetrating through the moving plate, a connecting short rod is formed on the circumferential surface of the circular plate along the radial extension of the circular plate, a T-shaped sliding block is slidably connected to the inside of the sliding frame, a hinge rod is hinged between the bottom of the T-shaped sliding block and the bottom of the connecting short rod, the top of the laser preheating head is connected to the bottom of the sliding block through a connecting column arranged along the vertical direction, and the connecting column is connected with one side of the T-shaped sliding block through a fixed connecting rod.
Preferably, the dual ring laser welding head is slidably mounted within the mounting plate and the dual ring laser welding head is detachably connected to the moving plate.
Preferably, the mounting seats are fixedly arranged at the two ends of the inner side of the mounting plate along the length direction of the mounting plate, a guide rod is connected between the two mounting seats, a fixing block with a rectangular structure is fixedly connected to the top of the double-ring laser welding head, the top of the fixing block is connected with the top of the inner side of the mounting plate in a sliding fit manner, and the fixing block is sleeved on the guide rod and is in sliding connection with the guide rod.
Preferably, the sliding block is fixedly connected with a push rod along the horizontal direction on the side wall of one side of the double-ring laser welding head, a limit groove matched with the conical part of the push rod is formed on the side wall of the fixed block, and when the T-shaped sliding block slides to the left end part of the sliding frame, the push rod can extend to the outside of the moving plate.
Preferably, one end of the movable plate, which faces the double-ring laser welding head, is fixedly connected with a telescopic inserting rod along the horizontal direction, a positioning sleeve is formed on the side wall of the fixed block at the position corresponding to the inserting rod, and the inserting rod is inserted into the positioning sleeve in a telescopic manner and is connected with the positioning sleeve through electromagnetic adsorption.
Preferably, the dual-ring laser welding head (3) comprises a central laser head (301) and an annular laser head (302), wherein the central laser head (301) is used for generating a central optical laser beam after receiving the central optical analog signal, and the annular laser head (302) is used for generating an annular optical laser beam after receiving the annular optical analog signal.
Preferably, a connecting plate (26) is fixed on the side wall of the laser preheating head (4), an electric telescopic rod (27) is vertically fixed on the lower surface of the connecting plate (26), and a brush plate (28) is fixed at the lower end of the electric telescopic rod (27).
Compared with the prior art, the invention provides a preheating laser with a double-ring structure, which has the following beneficial effects:
(1) The laser preheating head and the double-ring laser welding head share one set of driving system, and the laser preheating head can independently move along the welding line through the first driving system to preheat the welding line. The double-ring laser welding head and the laser preheating head can synchronously move along the welding line after being connected to finish welding of the welding line, and a driving system required by the movement of the double-ring laser welding head can be saved, so that the production cost of the whole device can be reduced.
(2) When the laser preheating head and the double-ring laser welding head synchronously move, a temperature sensor on the double-ring laser welding head can monitor the weld joint in real time and control a first driving system and a second driving system to act, and in the welding process, when the temperature sensor detects that the weld joint is unqualified in preheating, the first driving system is controlled by the temperature sensor to stop moving, and the second driving system is controlled by the temperature sensor to drive the laser preheating head to move to the position where the double-ring laser welding head stays along the opposite direction of the weld joint, and the laser preheating head carries out thermal compensation on the weld joint with the preheating temperature unqualified, so that the heating of the weld joint is more uniform, and the welding quality and the welding efficiency are ensured.
(3) The double-ring laser welding head is used for double-ring light emission, so that the welding efficiency can be greatly improved, and the welding range is larger.
(4) The invention can clean the welding seam before formal welding by arranging the brush plate, and can ensure the cleanness of the whole welding environment.
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 and together with the embodiments of the invention and do not constitute a limitation to the invention, and in which:
FIG. 1 is a schematic diagram of the whole device in an embodiment of the invention;
FIG. 2 is a schematic view of the structure of the inside of a mounting plate according to an embodiment of the present invention;
FIG. 3 is a schematic view of the internal structure of a mobile plate according to an embodiment of the present invention;
FIG. 4 is a partial schematic view of another angle inside the mounting plate in an embodiment of the invention;
FIG. 5 is a schematic cross-sectional view of the whole device perpendicular to the length direction in an embodiment of the present invention;
FIG. 6 is a schematic diagram of a dual ring laser welding head according to an embodiment of the present invention;
in the figure: 1. a support frame; 2. a mounting plate; 3. a dual ring laser welding head; 4. a laser preheating head; 5. a mounting base; 6. a guide rod; 7. a limit sliding rail; 8. a moving plate; 9. a gear; 10. a circular plate; 11. a sliding block; 12. connecting short rods; 13. a hinge rod; 14. a sliding frame; 15. a T-shaped slider; 16. a fixed connecting rod; 17. a connecting column; 18. a rack; 19. a first servo motor; 20. a fixed block; 21. inserting a connecting rod; 22. a positioning sleeve; 23. a push rod; 24. a temperature sensor; 25. the second servo motor, 26-connecting plate, 27-electric telescopic rod and 28-brush plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1-6, the present embodiment provides a preheating laser with a dual-ring structure, which includes a dual-ring laser welding head 3 and a laser preheating head 4 disposed in the advancing direction of the welding seam. The laser preheating head 4 moves along the welding line independently through the first driving system to finish preheating the welding line, the laser preheating head 4 after finishing preheating returns to the initial position, then the double-ring laser welding head 3 is connected with the laser preheating head 4, and the double-ring laser welding head 3 and the laser preheating head 4 are connected into a whole and then synchronously move along the welding line by means of the first driving to finish welding of the welding line. For carrying out real-time control to the temperature of welding seam department before the welding, install the temperature sensor 24 that is used for detecting preheating temperature on dicyclo laser welding head 3 in this application to temperature sensor 24 and first actuating system signal connection, when temperature sensor 24 detects the preheating temperature of welding seam department and does not reach standard, can stop the action after the signal is received in first drive. The invention also comprises a second drive system for driving the laser preheating head 4 to reciprocate along the welding line direction, and the temperature sensor 24 is also in signal connection with the second drive system. In the welding process, when the temperature sensor 24 detects that the welding line is unqualified in preheating, the first driving system is controlled by the temperature sensor 24 to stop moving, the second driving system is controlled by the temperature sensor 24 to act, the laser preheating head 4 is driven to move to a position where the double-ring laser welding head 3 stays along the opposite direction of the welding line, and then the laser preheating head 4 carries out thermal compensation on the unqualified position again, so that the preheating temperature reaches a preset value.
Specifically, a connecting plate 26 is fixed on the side wall of the laser preheating head 4, an electric telescopic rod 27 is vertically fixed on the lower surface of the connecting plate 26, a brush plate 28 is fixed at the lower end of the electric telescopic rod 27, when the laser preheating head 4 preheats a welding seam, bristles below the brush plate 28 downwards extend out through the electric telescopic rod 27 to enable the bristles to be in contact with the surface of a workpiece to be welded, and the laser preheating head 4 can simultaneously move with the brush plate 28 in the process of independently moving along the welding seam through a first driving system so as to clean the surface of the workpiece.
Specifically, the dual-ring laser welding head 3 includes a central laser head 301 and an annular laser head 302, the central laser head 301 is used for generating a central laser beam after receiving the central optical analog signal, and the annular laser head 302 is used for generating an annular laser beam after receiving the annular optical analog signal. The central light laser beam is used for welding the welding seam, and the annular light laser beam is used for carrying out heat preservation and preheating on the welding point periphery, so that the welding speed and quality are improved.
Specifically, the first driving system in this embodiment includes a first servo motor 19 fixed on the top of the moving plate 8, a motor shaft of the first servo motor 19 extends downward in a vertical direction and passes through the moving plate 8 to be fixedly connected with a gear 9, a rack 18 is installed on any inner side of the bottom of the mounting plate 2 along the length direction of the motor shaft, the gear 9 is meshed with the rack 18, in addition, limiting sliding rails 7 are formed on two side walls of the inside of the mounting plate 2 along the length direction of the motor shaft, the moving plate 8 is slidably connected with the limiting sliding rails 7 on two sides of the mounting plate 2, the gear 9 is driven to rotate by the first servo motor 19, and the gear 9 is meshed with the rack 18, so that the moving plate 8 is driven to slide inside the mounting plate 2, a gap is formed between the top of the moving plate 8 and the top of the mounting plate 2, and the top of the first servo motor 19 is located in the gap and is prevented from contacting with the top of the mounting plate 2, so that interference is prevented when the moving plate 8 slides relative to the mounting plate 2.
According to the method, before welding the welding seam, the laser preheating head 4 can firstly preheat the welding seam integrally along the welding seam, after preheating is finished, the double-ring laser welding head 3 starts to weld the welding seam, but one process is needed for welding, the temperature of the welding seam is reduced in the process, so that the preheating temperature of the welding seam is lower than a preset value, the laser preheating head 4 is required to be used for carrying out thermal compensation on the unqualified position in time during the welding process, and in the thermal compensation process, the double-ring laser welding head 3 is required to be stopped and even returned forwards for a certain distance, and the laser preheating head 4 is required to be moved to the unqualified position through the second driving system.
The second driving system comprises a second servo motor 25 fixedly arranged at the top of the moving plate 8, a sliding block 11 and a sliding frame 14 which are slidably arranged in a concave groove of the moving plate 8, a circular plate 10 is fixedly connected with a motor shaft of the second servo motor 25 after penetrating through the moving plate 8, a connecting short rod 12 is formed on the circumferential surface of the circular plate 10 in a radial extending mode, a T-shaped sliding block 15 is slidably connected in the sliding frame 14, a hinging rod 13 is hinged between the bottom of the T-shaped sliding block 15 and the bottom of the connecting short rod 12, the top of the laser preheating head 4 is connected to the bottom of the sliding block 11 through a connecting column 17 arranged in the vertical direction, one side of the connecting column 17 and one side of the T-shaped sliding block 15 are connected through a fixed connecting rod 16, when the second driving system acts, the second servo motor 25 drives the circular plate 10 to rotate, the connecting short rod 12 drives the T-shaped sliding block 15 to slide in the sliding frame 14 in a reciprocating mode through the hinging rod 13, and the T-shaped sliding block 15 slides in the sliding frame 14 in a reciprocating mode through the fixed connecting rod 16 in the sliding block 11.
The inside both ends along its length direction of mounting panel 2 fixed mounting has mount pad 5, is connected with guide bar 6 between two mount pads 5, and the top fixedly connected with of dicyclo laser welding head 3 is rectangular structure's fixed block 20, and the top of fixed block 20 is connected with the inside top sliding fit of mounting panel 2, and fixed block 20 cup joints on guide bar 6 and sliding connection with it. The movable plate 8 is fixedly connected with a telescopic inserting rod 21 along the horizontal direction towards one end of the double-ring laser welding head 3, a locating sleeve 22 is formed at the position, corresponding to the inserting rod 21, on the side wall of the fixed block 20, of the inserting rod 21, the inserting rod 21 is inserted into the locating sleeve 22 in a telescopic mode and is connected with the inserting rod 22 through electromagnetic adsorption, after the welding line is preheated, the two inserting rods 21 at the end of the movable plate 8 are inserted into the locating sleeve 22 at the top of the double-ring laser welding head 3, the double-ring laser welding head 3 and the movable plate 8 can be connected into a whole through the electromagnetic adsorption mode, the double-ring laser welding head 3 and the laser preheating head 4 can slide along the mounting plate 2 through a first driving system, and then welding operation on the welding line is completed.
The sliding block 11 is fixedly connected with a push rod 23 along the horizontal direction on one side wall of the double-ring laser welding head 3, a limit groove matched with the conical part of the push rod 23 is formed on the side wall of the fixed block 20, when the temperature sensor 24 detects that the temperature of a welding seam is not up to standard, the temperature sensor sends signals to the first servo motor 19 and the second servo motor 25, the first servo motor 19 stops acting, the second servo motor 25 starts, the second servo motor 25 drives the laser preheating head 4 to move towards the double-ring laser welding head 3, and in order to enable the push rod 23 on the sliding block 11 to smoothly push the double-ring laser welding head 3 to slide backwards along the guide rod 6, the length of the push rod 23 needs to be moved firstly, namely, when the T-shaped sliding block 15 slides to the end part on the left side of the sliding frame 14, the push rod 23 needs to be guaranteed to extend to the outside of the moving plate 8, and the fixed block 20 can be pushed.
The invention provides a preheating laser with a double-ring structure, which can finish the preheating and welding of welding seams, when in operation, a first servo motor 19 is started to drive a gear 9 to rotate, the gear 9 is meshed with a rack 18, so that a movable plate 8 is driven to slide in a mounting plate 2, a T-shaped sliding block 15 is positioned at the rightmost side of a sliding frame 14 in the initial state, a second servo motor 25 does not work, a laser preheating head 4 and the movable plate 8 synchronously move to finish the preheating of the welding seams, then the first servo motor 19 is reversed to enable the laser preheating head 4 to return to the initial position, a plug rod 21 at the tail end of the movable plate 8 is inserted into a positioning sleeve 22 on a fixed block 20, an electromagnetic adsorption block in the positioning sleeve 22 acts to firmly adsorb the electromagnetic adsorption block by the two, the electromagnetic adsorption block is not shown in the drawing, the moving plate 8 and the double-ring laser welding head 3 are integrated, at the moment, the first servo motor 19 is started again to drive the double-ring laser welding head 3 and the moving plate 8 to synchronously move along the mounting plate 2, the working state of the temperature sensor 24 on the double-ring laser welding head 3 monitors the temperature of the welding seam, if the monitored preheating temperature reaches the standard, the double-ring laser welding head 3 acts to finish welding, if the monitored temperature of the welding seam does not reach the standard, the first servo motor 19 stops acting, the second servo motor 25 starts to drive the circular plate 10 to rotate, the T-shaped sliding block 15 is driven to slide in the sliding frame 14 towards the direction of the double-ring laser welding head 3, the push rod 23 on one side of the sliding block 11 slides out of the moving plate 8 and then is inserted into the limit groove in the fixed block 20 to jack the double-ring laser welding head 3, the double-ring laser welding head 3 slides towards the side opposite to the advancing direction, until the laser preheating head 4 moves to a position where the temperature of the welding line does not reach the standard, the laser preheating head 4 starts to perform temperature compensation on the position, after the temperature of the position is qualified, the first servo motor 19 starts to drive the double-ring laser welding head 3 and the moving plate 8 to move forward again until the whole welding line finishes welding operation, and then the first servo motor 19 reversely drives the double-ring laser welding head 3 and the moving plate 8 to return to the initial position for the next operation.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and scope of the invention as defined by the claims and their equivalents.
Claims (7)
1. The utility model provides a preheat laser instrument with dicyclo structure, including dicyclo laser welding head (3) and set up in laser beam preheating head (4) of welding seam advancing direction, its characterized in that: the laser preheating head (4) can independently move along the welding line through the first driving system to preheat the welding line, the double-ring laser welding head (3) can synchronously move along the welding line after being connected with the laser preheating head (4) to finish welding of the welding line, and the welding line is selectively thermally compensated when the laser preheating head (4) and the double-ring laser welding head (3) synchronously move; the double-ring laser welding head (3) is provided with a temperature sensor (24) for detecting the preheating temperature, the temperature sensor (24) is in signal connection with the first driving system, the double-ring laser welding head also comprises a second driving system for driving the laser preheating head (4) to reciprocate along the welding line direction, and the temperature sensor (24) is in signal connection with the second driving system; in the welding process, when the temperature sensor (24) detects that the welding line is unqualified for preheating, the first driving system is controlled by the temperature sensor (24) to stop moving, and the second driving system is controlled by the temperature sensor (24) to drive the laser preheating head (4) to move to a position where the double-ring laser welding head (3) stays along the opposite direction of the welding line; the laser preheating device comprises a mounting plate (2), wherein limiting sliding rails (7) are formed on two side walls of the inside of the mounting plate (2) along the length direction of the mounting plate, a movable plate (8) is mounted in the mounting plate (2), a gap is formed between the top of the movable plate (8) and the top of the mounting plate (2), the movable plate (8) is slidably connected with the movable plate (8) through the limiting sliding rails (7) on two sides of the mounting plate (2), a first driving system comprises a first servo motor (19) for fixing the top of the movable plate (8), a motor shaft of the first servo motor (19) downwards extends through the movable plate (8) along the vertical direction and is fixedly connected with a gear (9), a rack (18) is mounted on any inner side of the bottom of the mounting plate (2) along the length direction of the mounting plate, the gear (9) is meshed with the rack (18), and a laser preheating head (4) is slidably mounted in a concave groove at the bottom of the movable plate (8).
The second driving system comprises a second servo motor (25) fixedly arranged at the top of the movable plate (8) and a sliding block (11) and a sliding frame (14) which are slidably arranged in a concave groove of the movable plate (8), a motor shaft of the second servo motor (25) penetrates through the movable plate (8) and then is fixedly connected with a circular plate (10), a connecting short rod (12) is formed on the circumferential surface of the circular plate (10) along the radial extension of the motor shaft, a T-shaped sliding block (15) is slidably connected in the sliding frame (14), a hinging rod (13) is hinged between the bottom of the T-shaped sliding block (15) and the bottom of the connecting short rod (12), the top of the laser preheating head (4) is connected to the bottom of the sliding block (11) through a connecting column (17) arranged along the vertical direction, and one side of the connecting column (17) and one side of the T-shaped sliding block (15) are connected through a fixed connecting rod (16).
2. A preheating laser with a double ring structure according to claim 1, characterized in that the double ring laser welding head (3) is slidingly mounted inside the mounting plate (2) and that the double ring laser welding head (3) is detachably connected with the moving plate (8).
3. A preheating laser having a dual ring structure as claimed in claim 2, wherein: mounting panel (2) inboard along its length direction's both ends fixed mounting has mount pad (5), is connected with guide bar (6) between two mount pads (5), and the top fixedly connected with of dicyclo laser welding head (3) is fixed block (20) of rectangle structure, and the top of fixed block (20) is connected with the inboard top sliding fit of mounting panel (2), and fixed block (20) cup joints on guide bar (6) and with sliding connection.
4. A preheating laser having a dual ring structure according to claim 3, wherein: the sliding block (11) is fixedly connected with a push rod (23) along the horizontal direction on the side wall of one side of the double-ring laser welding head (3), a limit groove matched with the conical part of the push rod (23) is formed on the side wall of the fixed block (20), and when the T-shaped sliding block (15) slides to the left end part of the sliding frame (14), the push rod (23) can extend to the outside of the moving plate (8).
5. A preheating laser having a dual ring structure according to claim 3 or 4, wherein: one end of the moving plate (8) facing the double-ring laser welding head (3) is fixedly connected with a telescopic inserting rod (21) along the horizontal direction, and the side wall of the fixed block (20) is correspondingly inserted
A positioning sleeve (22) is formed at the position of the connecting rod (21), and the inserting rod (21) is inserted into the positioning sleeve (22) through expansion and contraction and is connected with the positioning sleeve through electromagnetic adsorption.
6. A preheating laser having a dual ring structure as claimed in claim 1, wherein: the dual-ring laser welding head (3) comprises a central laser head (301) and an annular laser head (302), wherein the central laser head (301) is used for generating a central laser beam after receiving a central optical analog signal, and the annular laser head (302) is used for generating an annular laser beam after receiving an annular optical analog signal.
7. A preheating laser having a dual ring structure as claimed in claim 1, wherein: a connecting plate (26) is fixed on the side wall of the laser preheating head (4), an electric telescopic rod (27) is vertically fixed on the lower surface of the connecting plate (26), and a brush plate (28) is fixed at the lower end of the electric telescopic rod (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210136827.XA CN114453745B (en) | 2022-02-15 | 2022-02-15 | Preheating laser with double-ring structure |
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| CN117921256A (en) * | 2024-01-31 | 2024-04-26 | 武冈市永锐电子科技有限公司 | Via hole electric connector assembly and processing equipment thereof |
| CN118023706B (en) * | 2024-04-15 | 2024-06-21 | 恒超源洗净科技(深圳)有限公司 | Ultrasonic wave preheating laser welding equipment for welding aluminum-based composite material |
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| CN106270899A (en) * | 2016-09-28 | 2017-01-04 | 深圳市艾贝特电子科技有限公司 | The welding material laser soldering device of various material composition and welding method |
| CN210172874U (en) * | 2019-06-20 | 2020-03-24 | 中车株洲电力机车有限公司 | Automatic welding system for bogie frame |
| CN112719582A (en) * | 2020-12-04 | 2021-04-30 | 上海航天设备制造总厂有限公司 | Laser welding device with preheating function and preheating welding method |
| CN214218862U (en) * | 2021-01-11 | 2021-09-17 | 董欣 | Laser cladding equipment with synchronous induction heating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106270899A (en) * | 2016-09-28 | 2017-01-04 | 深圳市艾贝特电子科技有限公司 | The welding material laser soldering device of various material composition and welding method |
| CN210172874U (en) * | 2019-06-20 | 2020-03-24 | 中车株洲电力机车有限公司 | Automatic welding system for bogie frame |
| CN112719582A (en) * | 2020-12-04 | 2021-04-30 | 上海航天设备制造总厂有限公司 | Laser welding device with preheating function and preheating welding method |
| CN214218862U (en) * | 2021-01-11 | 2021-09-17 | 董欣 | Laser cladding equipment with synchronous induction heating device |
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