CN108188522B - Laser fusion brazing composite welding device for sleeved hollow copper pipe - Google Patents
Laser fusion brazing composite welding device for sleeved hollow copper pipe Download PDFInfo
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- CN108188522B CN108188522B CN201810282317.7A CN201810282317A CN108188522B CN 108188522 B CN108188522 B CN 108188522B CN 201810282317 A CN201810282317 A CN 201810282317A CN 108188522 B CN108188522 B CN 108188522B
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 238000003466 welding Methods 0.000 title claims abstract description 112
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 96
- 239000010949 copper Substances 0.000 title claims abstract description 96
- 238000005219 brazing Methods 0.000 title claims abstract description 89
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 230000004927 fusion Effects 0.000 title description 14
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 49
- 229910052751 metal Inorganic materials 0.000 claims description 49
- 230000009471 action Effects 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 15
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 25
- 230000008569 process Effects 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010953 base metal Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000009467 reduction 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/04—Heating appliances
- B23K3/047—Heating appliances electric
- B23K3/0475—Heating appliances electric using induction effects, e.g. Kelvin or skin effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/005—Soldering by means of radiant energy
- B23K1/0056—Soldering by means of radiant energy soldering by means of beams, e.g. lasers, E.B.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Dermatology (AREA)
- General Health & Medical Sciences (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides a laser welding and brazing composite welding device for sleeving a hollow copper pipe, which comprises a workbench, and a clamping rotating assembly, a feeding assembly, a rotating material taking assembly, a welding and brazing assembly, a copper core supporting assembly, a laser welding assembly, a straightener assembly, a pneumatic scissors assembly and a hopper which are arranged on the workbench; the clamping rotating assembly comprises a servo motor, a motor support, a flange, a three-jaw cylinder and a pneumatic jaw finger, the servo motor is installed on the workbench through the motor support, the three-jaw cylinder is matched and coaxially assembled with the servo motor through the flange, the pneumatic jaw finger is installed on the three-jaw cylinder, and the three-jaw cylinder and the pneumatic jaw finger form a clamping structure for clamping the hollow copper pipe; the device comprises a series of structures such as automatic feeding and discharging and workpiece overturning, realizes full-automatic feeding, discharging, sleeving assembly, pneumatic shearing and laser welding and brazing combined welding processing of the hollow copper pipe and the hollow copper core, ensures the repeatability of welding process quality, greatly improves the production efficiency and reduces the production cost.
Description
The application is a divisional application with the application number of 201710015233.2, the application date of 2017-01-10 and the name of laser melting brazing composite welding method and device for sleeving hollow copper pipes.
Technical Field
The invention belongs to the field of industrial automation, and particularly relates to a laser fusion brazing composite welding method and device for a sleeved hollow copper pipe.
Background
With the technical development of the air conditioner and refrigeration industry and the further strict control of environmental protection laws and regulations, the improvement of the heat exchange coefficient of the heat exchange unit is a necessary means for improving the overall heat exchange performance of the heat exchanger and making up the reduction of the refrigeration performance caused by the reason of replacing the refrigerant. Based on the problem that the refrigeration performance of the existing refrigerant is reduced and effective alternative working media are not developed yet, related enterprises and scientific research institutions convert research objects into basic components of air conditioners and refrigeration, namely heat exchanger elements, namely hollow copper tubes, and the problems can be effectively solved by improving the heat exchange performance of the hollow copper tubes.
The refrigerated copper pipe of air conditioner mostly is thin-walled minor diameter hollow copper core, as shown in fig. 1, for providing the buffer zone for the refrigerant flows, promote refrigeration effect, generally design one section hollow copper pipe region that the pipe diameter is slightly big, the manufacturing approach is to cup joint hollow copper core 1102 respectively in hollow copper pipe 1101 both sides, hollow copper core 1102 and hollow copper pipe 1101 clearance fit, for preventing that the refrigerant from flowing through hollow copper pipe and taking place the leakage, then carry out the bell and spigot joint boxing processing with hollow copper pipe 1101 with hollow copper pipe 1102, both guaranteed the leakproofness of hollow copper pipe 1101 like this, make things convenient for the refrigerant circulation again.
At present, common welding means include argon arc welding, high-frequency induction welding and brazing. Argon arc welding is a welding mode which mainly depends on electric arc heating to melt base metal to generate metallurgical reaction, the welding seam is difficult to be made thin, and the welding heat affected zone is large, so that the argon arc welding is generally used for welding large-size sleeved hollow copper pipes with the wall thickness larger than 1mm and is not suitable for welding small and thin-wall sleeved hollow copper pipes; high-frequency induction welding is a main method for welding sleeved hollow copper pipes, but due to the clearance fit property of the copper pipes with different pipe diameters during sleeving, the skin effect and the proximity effect of the copper pipes are asynchronous in the welding process, so that locally molten base metal easily flows into the copper pipes through gaps to form welding plugs, surface dirt is not cleaned completely, welding seam air holes are easily formed, leakage and cracking problems are easily caused in the service process, meanwhile, welding process parameters are difficult to set, and the production efficiency and quality are greatly limited; for brazing, the problems that the mechanical property of a welding joint is poor, the sealing property is difficult to ensure, the repeatability of welding quality is directly influenced, cracks and leakage are easy to occur in the service process and the like exist.
Laser welding is a high-quality welding process technology which is developed rapidly in recent years, and the laser welding has small facula, so that a welding seam is extremely narrow, a welding heat affected zone is extremely small, and the laser welding becomes a preferred process for high-precision and high-quality welding. However, for the lap welding of the bell and spigot pipe, because the welding structure of the bell and spigot pipe requires enough welding area to ensure the integral strength mechanical property of the bell and spigot joint, single laser welding cannot meet the requirement, and multiple overlaying welding is needed, so that the process is complicated, the cost is increased, and the application of the laser welding in the field is limited.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a laser welding and brazing composite welding method for sleeving a hollow copper pipe; meanwhile, the invention also provides a laser welding and brazing composite welding device for sleeving the hollow copper pipe.
The invention is realized by the following technical scheme:
a laser welding and brazing composite welding method for sleeving a hollow copper pipe comprises the following steps:
(1) clamping the hollow copper pipe;
(2) inserting one end of a hollow copper core into the hollow copper pipe, wherein the two ends are in clearance fit;
(3) a brazing filler metal conveying device is arranged above the hollow copper core and the hollow copper pipe sleeving section;
(4) outputting a laser beam, focusing the laser beam on the positions of the tube side ends of the sleeving sections of the hollow copper core and the hollow copper tube, and performing fixed spot welding for preliminarily fixing the relative positions of the hollow copper core and the hollow copper tube;
(5) cutting off the hollow copper core according to the length requirement of the workpiece, and keeping balance on the supporting piece;
(6) outputting a laser beam, driving the hollow copper core and the hollow copper pipe to rotate at a constant speed, scanning the focused laser beam for a circle along the position of the pipe side end of the sleeved section of the hollow copper core and the hollow copper pipe, enabling the hollow copper pipe and the hollow copper core to realize fusion welding, and enabling the fusion depth not to exceed the inner wall surface of the hollow copper core, so as to obtain a pipe side end laser circumferential weld of the sleeved section of the hollow copper core and the hollow copper pipe;
(7) the sleeving section continues to rotate at a constant speed, and the molten brazing filler metal is controlled to obliquely drop into the side end of the core of the sleeving section from the flow guide pipe and flow into the gap between the hollow copper core and the hollow copper pipe; outputting a laser beam to enable a focused laser beam to act on the junction of the sleeve joint section and the molten solder in a defocusing mode, thereby realizing laser melting and brazing;
(8) horizontally turning the welded hollow copper pipe at one end for 180 degrees to enable the non-welded end of the hollow copper pipe to be opposite to the position of the fed hollow copper core;
(9) and (5) repeating the steps (2) to (7) to complete the welding of the other end of the hollow copper pipe.
The invention also provides a laser welding and brazing composite welding device for the sleeved hollow copper pipe, which comprises a workbench, and a clamping rotating assembly, a feeding assembly, a rotating material taking assembly, a welding and brazing assembly, a copper core supporting assembly, a laser welding assembly, a straightener assembly, a pneumatic scissors assembly and a hopper which are arranged on the workbench;
the clamping rotating assembly comprises a servo motor, a motor support, a flange, a three-jaw cylinder and a gas jaw finger, the servo motor is installed on the workbench through the motor support, the three-jaw cylinder is coaxially assembled through the matching of the flange and the servo motor, the gas jaw finger is installed on the three-jaw cylinder, and the three-jaw cylinder and the gas jaw finger form a clamping structure for clamping the hollow copper pipe;
the feeding assembly comprises a vibrating disc, a feeding support, two sliding chutes and two elastic blocking sleeves, the bottom of the feeding support is mounted on the workbench, and the two sliding chutes are vertically mounted on the feeding support at a certain distance; the two elastic blocking sleeves are respectively arranged at the tail ends of the two sliding grooves; the output end of the vibrating disk extends to the positions of the two sliding grooves; the hollow copper pipe is conveyed to the two sliding chutes through the vibrating disk and falls into the space between the two elastic retaining sleeves through the two sliding chutes;
the rotary material taking assembly comprises an X-direction cylinder, a guide rail plate, a cylinder fixing seat, an X-direction slide rail, an embedded clamping piece, a movable plate, a cylinder with a guide rail, an adapter, a rotary cylinder fixing plate, a rotary cylinder, a two-claw cylinder, a pneumatic finger and a Y-direction cylinder; the guide rail plate, the X-direction cylinder, the movable plate, the cylinder fixing seat, the X-direction slide rail and the embedded clamping piece form an X-direction moving mechanism, and the guide rail plate is fixedly arranged on the workbench through screws; grooves are formed in two sides of the guide rail plate, the moving plate is assembled in the grooves and is in clearance fit with the guide rail plate, and the moving plate and the guide rail plate form a linear kinematic pair; the X-direction cylinder is fixedly arranged on the movable plate through a cylinder fixing seat; the X-direction slide rail is fixedly arranged on the movable plate; the embedded clamping piece is arranged on the X-direction sliding rail and forms a linear kinematic pair with the X-direction sliding rail; the action end of the X-direction cylinder is connected with the embedded clamping piece and is used for driving the embedded clamping piece to do linear motion along the X-direction sliding rail;
the adapter and the Y-direction cylinder form a Y-direction moving mechanism, the Y-direction cylinder is fixedly arranged on the workbench through a support, the adapter is connected with the action end of the Y-direction cylinder, and the adapter is simultaneously connected with an embedded clamping piece in the X-direction moving mechanism; the Y-direction cylinder can drive the adapter and the embedded clamping piece to further drive the moving plate to do linear motion along the grooves on the two sides of the guide rail plate; the cylinder with the guide rail is arranged on the embedded clamping piece, and the direction of the guide rail of the cylinder with the guide rail is the Z-axis direction;
the rotary cylinder fixing plate, the rotary cylinder, the two-jaw cylinder and the two pneumatic fingers form a 180-degree rotary mechanism, and the rotary cylinder fixing plate is fixedly arranged on the cylinder with the guide rail and moves synchronously with the cylinder with the guide rail; the rotary cylinder is arranged on the rotary cylinder fixing plate, the two-jaw cylinder is arranged at the action end of the rotary cylinder and can rotate for an angle under the driving of the two-jaw cylinder; the two pneumatic fingers are arranged on the two-jaw cylinder and can realize clamping action by matching;
the brazing assembly comprises a brazing filler metal cylinder, a brazing filler metal support, a container fixing plate, a brazing filler metal conveying device, a conveying and mounting frame and a material receiving container, wherein the brazing filler metal cylinder is mounted on the brazing filler metal support, the container fixing plate is mounted with a piston rod of the brazing filler metal cylinder in a matched mode, and the brazing filler metal cylinder drives the container fixing plate to move up and down; the brazing filler metal conveying device is installed on the container fixing plate through the conveying installation frame, brazing filler metal powder is arranged in an upper cavity container of the brazing filler metal conveying device, a heating coil and a mechanical vibration part are arranged in an interlayer, the brazing filler metal powder can be heated and vibrated respectively, a flow control valve and a flow guide pipe forming a certain included angle with the horizontal plane are arranged at the bottom of the brazing filler metal conveying device, and molten brazing filler metal can flow out of the flow guide pipe; the material receiving container is provided with two U-shaped through holes along the axial direction of the sleeved copper pipe so as to ensure that the sleeved copper pipe smoothly passes through, and the sleeved section is positioned in the center of the material receiving container;
the copper core supporting assembly comprises a base, a supporting cylinder, a U-shaped adapter and a copper core supporting piece; the copper core supporting piece is matched with an action rod of a supporting cylinder through a U-shaped adapter, the supporting cylinder is fixed on a base, and the base is fixed on a workbench; the copper core supporting piece is provided with two opposite supporting vertical plates, and the top ends of the supporting vertical plates are provided with grooves for supporting the hollow copper core;
the laser welding assembly comprises a laser welding head, an angle adjusting block, an electric module, a fixing plate and a portal frame, wherein the laser welding head is installed in a matched mode with the electric module through the angle adjusting block, and therefore the adjustment of the processing focal length of the laser welding head can be achieved; the electric module is arranged on a portal frame through a fixing plate, and two ends of the portal frame are arranged on the workbench;
the straightener component comprises a plurality of roller height adjusting rockers and a plurality of rollers which are arranged in an up-down two-row staggered manner, and the roller height adjusting rockers are used for adjusting the distance between the upper row of rollers and the lower row of rollers; the hollow copper core penetrates through the upper row of rollers and the lower row of rollers to realize straightening and feeding;
the pneumatic scissors assembly comprises a scissors base, a scissors driving cylinder, an I-shaped adapter, a T-shaped connecting piece, pneumatic scissors, a T-shaped support and scissors sliding rails, the scissors base is installed on a workbench, the scissors driving cylinder is installed on the scissors base, the pneumatic scissors are installed at the action end of the scissors driving cylinder through the I-shaped adapter and the T-shaped connecting piece in a matched mode, the pneumatic scissors are installed on the T-shaped support, the T-shaped support is installed on the scissors sliding rails, and the pneumatic scissors can reciprocate along the scissors sliding rails under the driving of the scissors driving cylinder.
The invention has the following beneficial effects:
1. the laser welding and the fusion brazing are combined together, a laser circumferential weld is obtained by utilizing the side end of a laser welding sleeved section pipe, then the molten brazing filler metal is contacted and infiltrated into the sleeved section at a certain angle and speed along a guide pipe through a brazing filler metal conveying device while the sleeved section is controlled to rotate, then the laser acts on the contact position of the brazing filler metal and the sleeved section in a defocusing mode to realize the laser fusion brazing, and the surface of the obtained weld is smooth and free of burning loss. Therefore, the problems of poor mechanical property, insufficient sealing property, welding quality repeatability, easy generation of cracks and leakage in the service process and the like of the traditional pure brazing joint are effectively solved;
2. the hollow copper pipe-hollow copper core sleeve joint section welding joint obtained by the invention comprises a high-quality pipe side end laser circumferential weld and a smooth laser fusion brazing weld, on one hand, the high-quality laser circumferential weld ensures the sealing property of the sleeve joint section, and solves the problem of easy leakage, on the other hand, the smooth laser fusion brazing weld provides enough welding area, ensures enough integral strength mechanical property of the sleeve joint, and solves the problem of stress cracking in the service process;
3. according to the invention, the annular welding seam of the sleeve joint section is obtained by using laser, and then the laser acts on the joint of the sleeve joint section and the molten solder in a defocusing manner, so that the laser absorption rate can be effectively improved, the surface of the joint welding seam is smooth and free of burning loss, and compared with the method of adopting pure welding brazing or laser welding, the joint structure has good quality and stable performance;
4. the invention also provides a laser welding and brazing composite welding device for the sleeved hollow copper pipe, which realizes the composite processing of two process methods of laser welding and brazing on one hand, thereby obtaining the excellent process effects of 1-3 on the other hand, the device comprises a series of structures of automatic feeding and discharging, workpiece overturning and the like, realizes the full-automatic feeding, blanking, sleeved assembly, pneumatic shearing and laser welding and brazing composite welding processing of the hollow copper pipe and the hollow copper core, ensures the repeatability of the welding process quality, greatly improves the production efficiency and reduces the production cost.
Drawings
FIG. 1 is an overall view of a laser fusion brazing welding apparatus according to the present invention;
FIG. 2 is a partial block diagram of a laser fusion brazing welding apparatus according to the present invention;
FIG. 3 is a block diagram of a welded workpiece;
FIG. 4 is a block diagram of a clamping rotating assembly;
FIG. 5 is a block diagram of the loading assembly;
FIG. 6 is a block diagram of a rotary take off assembly;
FIG. 7 is a block diagram of a fusion brazed assembly;
FIG. 8 is a block diagram of a copper core support assembly;
FIG. 9 is a block diagram of a laser welded assembly;
FIG. 10 is a block diagram of a straightener assembly;
FIG. 11 is a block diagram of the pneumatic scissor assembly;
the meanings of the reference symbols in the figures are as follows:
the device comprises a workbench 1, a clamping rotating assembly 2, a feeding assembly 3, a rotating material taking assembly 4, a melting and brazing assembly 5, a copper core supporting assembly 6, a laser welding assembly 7, a straightener assembly 8, a pneumatic scissors assembly 9, a hopper 10, a workpiece 11, a hollow copper pipe 1101, a hollow copper core 1102, a servo motor 201, a motor support 202, a flange 203, a three-jaw air cylinder 204, an air claw finger 205, a chute 301, a feeding support 302, a vibrating disc 303, an X-direction air cylinder 401, a guide rail plate 402, an air cylinder fixing seat 403, an X-direction slide rail 404, an embedding clamping piece 405, a moving plate 406, a guide rail-provided air cylinder 407, an adapter 408, a rotating air cylinder fixing plate 409, a rotating air cylinder 410, a two-jaw air cylinder 411, a pneumatic finger 412, a Y-direction air cylinder 413, a brazing filler metal air cylinder 501, a brazing filler metal support 502, a container fixing plate 503, a brazing filler metal conveying device 504, the device comprises a connecting piece 603, a copper core supporting piece 604, a laser welding head 701, an angle adjusting block 702, an electric module 703, a fixing plate 704, a portal frame 705, a roller height adjusting rocker 801, a roller assembly 802, a scissors base 901, a scissors driving cylinder 902, an I-shaped adapter 903, a T-shaped connecting piece 904, pneumatic scissors 905, a T-shaped support 906 and scissors sliding rails 907.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention provides a laser welding and brazing composite welding method for a sleeved hollow copper pipe, which is used for realizing sleeved assembly of two sides of a hollow copper pipe 1101 and a hollow copper core 1102 with a slightly smaller diameter and sealing and welding the hollow copper core 1102 to form 11. The method specifically comprises the following steps:
(1) clamping a hollow copper pipe 1101;
(2) one end of a hollow copper core 1102 is inserted into the hollow copper pipe 1101, the two are in clearance fit, the clearance value is 0.01 mm-0.3 mm, and the sleeving length is 2 mm-10 mm;
(3) a brazing filler metal conveying device is arranged above the sleeving section of the hollow copper core 1102 and the hollow copper pipe 1101, and is used for conveying molten brazing filler metal and enabling the molten brazing filler metal to flow out of the flow guide pipe;
(4) outputting a laser beam, focusing the laser beam on the position (close to the copper pipe side) of the pipe side end of the sleeved section of the hollow copper core 1102 and the hollow copper pipe 1101, and performing fixed spot welding to preliminarily fix the relative position of the hollow copper core 1102 and the hollow copper pipe 1101;
(5) cutting the hollow copper core 1102 according to the length requirement of the workpiece and keeping balance on the supporting piece 604;
(6) outputting a laser beam, driving the hollow copper core 1102 and the hollow copper pipe 1101 to rotate together at a constant speed through a servo motor, scanning the focused laser beam for a circle along the pipe side position of the sleeved section of the hollow copper core 1102 and the hollow copper pipe 1101, and realizing control of laser surfacing depth by setting appropriate process parameters (laser power, defocusing amount and copper pipe rotation speed), namely realizing fusion welding of the hollow copper pipe 1101 and the hollow copper core 1102, wherein the fusion depth is not more than the inner wall surface of the hollow copper core (non-penetration type surfacing), so as to obtain a pipe side laser circumferential weld of the sleeved section of the hollow copper core 1102 and the hollow copper pipe 1101;
(7) the sleeving section continues to rotate at a constant speed, and molten solder is controlled to obliquely drop into the side end (close to the copper core) of the core of the sleeving section from the flow guide pipe and flow into the gap between the hollow copper core 1102 and the hollow copper pipe 1101; and outputting a laser beam to enable the focused laser beam to act on the junction of the sleeve joint section and the molten solder in a defocusing mode, thereby realizing laser melting and brazing.
(8) Horizontally turning the welded hollow copper pipe 1101 at one end by 180 degrees to enable the non-welded end of the hollow copper pipe 1101 to be opposite to the position of the fed hollow copper core 1102;
(9) and (5) repeating the steps (2) to (7) to complete the welding of the other end of the hollow copper pipe 1101.
The invention also provides a laser welding and brazing composite welding device for sleeving the hollow copper pipe for realizing the method, which specifically comprises a workbench 1, and a clamping rotating assembly 2, a feeding assembly 3, a rotating material taking assembly 4, a welding and brazing assembly 5, a copper core supporting assembly 6, a laser welding assembly 7, a straightener assembly 8, a pneumatic scissors assembly 9 and a hopper 10 which are arranged on the workbench 1, as shown in figures 1-11.
The clamping and rotating assembly 2 is used for clamping the hollow copper pipe 1101 and realizing the rotating motion of the hollow copper pipe 1101. The feeding assembly 3 is used for conveying the hollow copper pipe 1101 with the fixed length in the vibration disc to a feeding station. The rotary material taking assembly 4 is used for clamping the hollow copper pipe 1101 of the feeding station to the welding station and realizing the rotary motion of the hollow copper pipe 1101. The welding and brazing assembly 5 is used for conveying molten brazing filler metal and is matched with the laser welding assembly to achieve laser welding and brazing. The copper core supporting component 6 is used for supporting the sheared hollow copper core 1102 to keep the hollow copper core 1102 balanced. The straightener assembly 8 is used to straighten the hollow copper core 1102 and convey the hollow copper core 1102 to the welding station. The pneumatic scissor assembly 9 is used to cut the hollow copper core 1102 after welding is complete. The hopper 10 is used for collecting the workpieces 11 formed after welding.
The clamping rotating assembly 2 comprises a servo motor 201, a motor support 202, a flange 203, a three-jaw cylinder 204 and a gas-jaw finger 205, the servo motor 201 is mounted on the workbench 1 through the motor support 202, the three-jaw cylinder 204 is matched with the servo motor 201 through the flange 203 to realize coaxial assembly, the gas-jaw finger 205 is mounted on the three-jaw cylinder 204, and the two components form a clamping structure for clamping the hollow copper tube 1101.
The feeding assembly 3 comprises a vibrating disc 303, a feeding support 302, two sliding chutes 301 and two elastic retaining sleeves, the bottom of the feeding support 302 is mounted on the workbench 1, and the two sliding chutes 301 are vertically mounted on the feeding support 302 at a certain distance; the two elastic blocking sleeves are respectively arranged at the tail ends of the two sliding grooves 301; the output end of the vibrating disk 303 extends to the positions of the two sliding grooves 301; the hollow copper pipe 1101 is conveyed to the two sliding chutes 301 through the vibrating disk 303, and falls into the space between the two elastic retaining sleeves through the two sliding chutes 301 (the position is a feeding station).
The rotary material taking assembly 4 comprises an X-direction cylinder 401, a guide rail plate 402, a cylinder fixing seat 403, an X-direction slide rail 404, an embedded clamping piece 405, a moving plate 406, a cylinder with a guide rail 407, an adapter 408, a rotary cylinder fixing plate 409, a rotary cylinder 410, a two-claw cylinder 411, a pneumatic finger 412 and a Y-direction cylinder 413. The guide rail plate 402, the X-direction cylinder 401, the moving plate 406, the cylinder fixing seat 403, the X-direction slide rail 404 and the embedded clamping piece 405 form an X-direction moving mechanism, and the guide rail plate 402 is fixedly arranged on the workbench 1 through screws; grooves are formed in the two sides of the guide rail plate 402, the moving plate 406 is assembled in the grooves and is in clearance fit with the guide rail plate 402, and the moving plate and the guide rail plate form a linear kinematic pair; the X-direction cylinder 401 is fixedly arranged on the moving plate 406 through a cylinder fixing seat 403; the X-direction slide rail 404 is fixedly arranged on the moving plate 406; the embedded clamping piece 405 is arranged on the X-direction sliding rail 404 and forms a linear kinematic pair with the X-direction sliding rail 404; the action end of the X-direction cylinder 401 is connected with the embedded clamping piece 405 and is used for driving the embedded clamping piece 405 to do linear motion along the X-direction slide rail 404.
The adapter 408 and the Y-direction cylinder 413 form a Y-direction moving mechanism, the Y-direction cylinder 413 is fixedly arranged on the workbench 1 through a support, the adapter 408 is connected with the action end of the Y-direction cylinder 413, and the adapter 408 is simultaneously connected with the embedded clamping piece 405 in the X-direction moving mechanism; the Y-direction cylinder 413 can drive the adaptor 408 and the embedded clamping piece 405, and further drive the moving plate 406 to move linearly along the grooves on the two sides of the guide rail plate 402. The cylinder 407 with a guide rail is attached to the insertion card 405, and the direction of the guide rail of the cylinder 407 with a guide rail is the Z-axis direction.
The rotary cylinder fixing plate 409, the rotary cylinder 410, the two-jaw cylinder 411 and the two pneumatic fingers 412 form a 180-degree rotary mechanism, and the rotary cylinder fixing plate 409 is fixedly arranged on the cylinder with the guide rail 407 and moves synchronously with the cylinder with the guide rail 407; the rotary cylinder 410 is arranged on a rotary cylinder fixing plate 409, the two-jaw cylinder 411 is arranged at the action end of the rotary cylinder 410 and can rotate for 180 degrees under the driving of the two-jaw cylinder 411; two pneumatic fingers 412 are mounted on the two-jaw cylinder 411, and the two fingers cooperate to achieve the gripping action.
The melting and brazing assembly 5 comprises a brazing filler metal cylinder 501, a brazing filler metal support 502, a container fixing plate 503, a brazing filler metal conveying device 504, a conveying mounting frame 505 and a material receiving container 506, wherein the brazing filler metal cylinder 501 is mounted on the brazing filler metal support 502, the container fixing plate 503 is mounted with a piston rod of the brazing filler metal cylinder 501 in a matched mode, and the brazing filler metal cylinder 501 drives the container fixing plate to move up and down. The brazing filler metal conveying device 504 is installed on the container fixing plate 503 through a conveying installation frame 505, brazing filler metal powder is arranged in an upper cavity container of the brazing filler metal conveying device 504, a heating coil and a mechanical vibration part are arranged in an interlayer, the brazing filler metal powder can be heated and vibrated respectively, a flow control valve and a flow guide pipe forming a certain included angle with the horizontal plane are arranged at the bottom of the brazing filler metal conveying device, and molten brazing filler metal can flow out of the flow guide pipe. The material receiving container 506 is provided with two U-shaped through holes along the axial direction of the sleeved copper pipe to ensure that the sleeved copper pipe smoothly passes through, and the sleeved section is positioned at the center of the material receiving container 506.
The copper core supporting assembly 6 comprises a base 601, a supporting cylinder 602, a U-shaped adapter 603 and a copper core supporting member 604. The copper core supporting piece 604 is installed in a matching way with an action rod of the supporting cylinder 602 through the U-shaped adapter 603, the supporting cylinder 602 is fixed on the base 601, and the base 601 is fixed on the workbench 1. Two opposite supporting vertical plates are arranged on the copper core supporting piece 604, and grooves for supporting the hollow copper cores 1102 are formed in the top ends of the supporting vertical plates.
The laser welding assembly 7 comprises a laser welding head 701, an angle adjusting block 702, an electric module 703, a fixing plate 704 and a portal frame 705, wherein the laser welding head 701 is installed in a matched manner with the electric module 703 through the angle adjusting block 702, so that the adjustment of the processing focal length of the laser welding head 701 can be realized; the electric module 703 is mounted on a gantry 705 through a fixing plate 704, and two ends of the gantry 705 are mounted on the workbench 1.
The straightener assembly 8 comprises a plurality of roller height adjusting rockers 801 and a plurality of rollers 802 arranged in an up-down staggered manner, wherein the roller height adjusting rockers 801 are used for adjusting the distance between the upper row of rollers and the lower row of rollers. The hollow copper core 1102 penetrates through the upper row of rollers and the lower row of rollers, and straightening and feeding are achieved.
The pneumatic scissors assembly 9 comprises a scissors base 901, a scissors driving cylinder 902, an I-shaped adapter 903, a T-shaped connector 904, pneumatic scissors 905, a T-shaped support 906 and scissors sliding rails 907, wherein the scissors base 901 is installed on the workbench 1, the scissors driving cylinder 902 is installed on the scissors base 901, the pneumatic scissors 905 are installed in a matched mode with the action ends of the scissors driving cylinder 902 through the I-shaped adapter 903 and the T-shaped connector 904, the pneumatic scissors 905 are installed on the T-shaped support 906, the T-shaped support 906 is installed on the scissors sliding rails 907, and the pneumatic scissors 905 can reciprocate along the scissors sliding rails 907 under the driving of the scissors driving cylinder 902.
The working process of the laser welding and brazing device for sleeving the hollow copper pipe comprises the following steps:
the X-direction moving mechanism, the Y-direction moving mechanism and the 180-degree rotating mechanism in the rotary material taking assembly 4 are matched with the cylinder 407 with the guide rail, the pneumatic finger 412 is moved to a position (a feeding station) where the hollow copper pipe 1101 is located between the two elastic blocking sleeves, the pneumatic finger 412 is used for clamping the hollow copper pipe 1101 and moving to the position where the hollow copper core 1102 is located, one end of the hollow copper core 1102 is inserted into the hollow copper pipe 1101, and the material taking action is completed. Then, the air claw finger 205 of the clamping and rotating assembly 2 clamps the hollow copper pipe 1101, and the pneumatic finger 412 is released; outputting a laser beam, focusing the laser beam on the position (close to the copper pipe side) of the pipe side end of the sleeved section of the hollow copper core 1102 and the hollow copper pipe 1101, and performing fixed spot welding to preliminarily fix the relative position of the hollow copper core 1102 and the hollow copper pipe 1101; then, according to the length requirement of the workpiece, a pneumatic scissors driving cylinder 602 is started, a hollow copper core 1102 is cut off by using pneumatic scissors 605, and the balance is kept on a support 604; and outputting the laser beam again, wherein the clamping rotating assembly 2 drives the hollow copper pipe 1101 and the hollow copper core 1102 to rotate at a constant speed together, so that the focused laser beam scans for a circle along the pipe side end positions of the sleeved sections of the hollow copper core 1102 and the hollow copper pipe 1101, and a pipe side end laser girth weld of the sleeved sections of the hollow copper core 1102 and the hollow copper pipe 1101 is obtained.
Then, the sleeving section continues to rotate at a constant speed, and the brazing filler metal conveying device 504 obliquely drips the molten brazing filler metal from the flow guide pipe into the core side end (close to the copper core side) of the sleeving section and flows into the gap between the hollow copper core 1102 and the hollow copper pipe 1101; and outputting a laser beam, and enabling the focused laser beam to act on the junction of the sleeve joint section and the molten brazing filler metal in a defocusing mode after the brazing filler metal is dripped, thereby realizing laser melting brazing.
After welding of one side of the hollow copper pipe 1101 is finished, the gas claw finger 205 is loosened, the pneumatic finger 412 is clamped, the rotary cylinder 410 is controlled to drive the hollow copper pipe 1101 to rotate 180 degrees, welding of the other side is conducted, after welding of two sides of the hollow copper pipe 1101 is finished, the rotary material taking assembly 4 retracts, the gas claw finger 205 is loosened, the rotary cylinder 410 rotates to the horizontal position, the pneumatic finger 412 is loosened, and the welded workpiece 11 automatically falls into the hopper 10.
It will be obvious to those skilled in the art that the present invention may be varied in many ways, and that such variations are not to be regarded as a departure from the scope of the invention. All such modifications as would be obvious to one skilled in the art are intended to be included within the scope of this claim.
Claims (1)
1. A laser welding and brazing composite welding device for sleeving a hollow copper pipe is characterized by comprising a workbench (1), and a clamping rotating assembly (2), a feeding assembly (3), a rotating material taking assembly (4), a welding and brazing assembly (5), a copper core supporting assembly (6), a laser welding assembly (7), a straightener assembly (8), a pneumatic scissors assembly (9) and a hopper (10) which are arranged on the workbench (1);
the clamping rotating assembly (2) comprises a servo motor (201), a motor support (202), a flange (203), a three-jaw air cylinder (204) and a pneumatic jaw finger (205), the servo motor (201) is installed on the workbench (1) through the motor support (202), the three-jaw air cylinder (204) is matched with the servo motor (201) through the flange (203) to achieve coaxial assembly, the pneumatic jaw finger (205) is installed on the three-jaw air cylinder (204), and the three-jaw air cylinder and the pneumatic jaw finger form a clamping structure for clamping the hollow copper pipe (1101);
the feeding assembly (3) comprises a vibrating disc (303), a feeding support (302), two sliding chutes (301) and two elastic blocking sleeves, the bottom of the feeding support (302) is installed on the workbench (1), and the two sliding chutes (301) are vertically installed on the feeding support (302) at a certain distance; the two elastic blocking sleeves are respectively arranged at the tail ends of the two sliding grooves (301); the output end of the vibrating disk (303) extends to the positions of the two sliding grooves (301); the hollow copper tube (1101) is conveyed to the two sliding grooves (301) through the vibrating disk (303) and falls into the space between the two elastic retaining sleeves through the two sliding grooves (301);
the rotary material taking assembly (4) comprises an X-direction cylinder (401), a guide rail plate (402), a cylinder fixing seat (403), an X-direction slide rail (404), an embedded clamping piece (405), a moving plate (406), a cylinder with a guide rail (407), an adapter piece (408), a rotary cylinder fixing plate (409), a rotary cylinder (410), a two-claw cylinder (411), a pneumatic finger (412) and a Y-direction cylinder (413); the X-direction moving mechanism is composed of the guide rail plate (402), an X-direction cylinder (401), a moving plate (406), a cylinder fixing seat (403), an X-direction slide rail (404) and an embedded clamping piece (405), and the guide rail plate (402) is fixedly arranged on the workbench (1) through screws; grooves are formed in two sides of the guide rail plate (402), the moving plate (406) is assembled in the grooves and is in clearance fit with the guide rail plate (402), and the moving plate form a linear kinematic pair; the X-direction cylinder (401) is fixedly arranged on the moving plate (406) through a cylinder fixing seat (403); the X-direction sliding rail (404) is fixedly arranged on the moving plate (406); the embedded clamping piece (405) is arranged on the X-direction sliding rail (404) and forms a linear kinematic pair with the X-direction sliding rail (404); the action end of the X-direction cylinder (401) is connected with the embedded clamping piece (405) and is used for driving the embedded clamping piece (405) to do linear motion along the X-direction sliding rail (404);
the Y-direction moving mechanism is formed by the adapter (408) and the Y-direction cylinder (413), the Y-direction cylinder (413) is fixedly mounted on the workbench (1) through a support, the adapter (408) is connected with the action end of the Y-direction cylinder (413), and the adapter (408) is connected with the embedded clamping piece (405) in the X-direction moving mechanism; the Y-direction cylinder (413) can drive the adapter (408) and the embedded clamping piece (405) to further drive the moving plate (406) to do linear motion along the grooves on the two sides of the guide rail plate (402); the air cylinder (407) with the guide rail is arranged on the embedded clamping piece (405), and the guide rail direction of the air cylinder (407) with the guide rail is the Z-axis direction;
the rotary cylinder fixing plate (409), the rotary cylinder (410), the two-jaw cylinder (411) and the two pneumatic fingers (412) form a 180-degree rotary mechanism, and the rotary cylinder fixing plate (409) is fixedly arranged on the cylinder with the guide rail (407) and moves synchronously with the cylinder with the guide rail (407); the rotary cylinder (410) is arranged on the rotary cylinder fixing plate (409), the two-jaw cylinder (411) is arranged at the action end of the rotary cylinder (410) and can rotate 180 degrees under the driving of the two-jaw cylinder (411); two pneumatic fingers (412) are arranged on the two-claw cylinder (411), and the two pneumatic fingers are matched to realize clamping action;
the melting and brazing assembly (5) comprises a brazing filler metal cylinder (501), a brazing filler metal support (502), a container fixing plate (503), a brazing filler metal conveying device (504), a conveying mounting frame (505) and a material receiving container (506), wherein the brazing filler metal cylinder (501) is mounted on the brazing filler metal support (502), the container fixing plate (503) is mounted with a piston rod of the brazing filler metal cylinder (501) in a matched mode, and the brazing filler metal cylinder (501) drives the container fixing plate to move up and down; the solder conveying device (504) is arranged on the container fixing plate (503) through a conveying mounting frame (505), and solder powder is arranged in an upper cavity container of the solder conveying device (504); the material receiving container (506) is provided with two U-shaped through holes along the axial direction of the sleeved copper pipe to ensure that the sleeved copper pipe smoothly passes through, and the sleeved section is positioned at the center of the material receiving container (506);
the copper core supporting assembly (6) comprises a base (601), a supporting cylinder (602), a U-shaped adapter (603) and a copper core supporting piece (604); the copper core supporting piece (604) is matched and installed with an action rod of a supporting cylinder (602) through a U-shaped adapter (603), the supporting cylinder (602) is fixed on a base (601), and the base (601) is fixed on the workbench (1); the copper core supporting piece (604) is provided with two opposite supporting vertical plates, and the top ends of the supporting vertical plates are provided with grooves for supporting the hollow copper core (1102);
the laser welding assembly (7) comprises a laser welding head (701), an angle adjusting block (702), an electric module (703), a fixing plate (704) and a portal frame (705), wherein the laser welding head (701) is installed with the electric module (703) in a matched mode through the angle adjusting block (702), and therefore the adjustment of the processing focal length of the laser welding head (701) can be achieved; the electric module (703) is arranged on a portal frame (705) through a fixing plate (704), and two ends of the portal frame (705) are arranged on the workbench (1);
the straightener component (8) comprises a plurality of roller height adjusting rocker arms (801) and a plurality of rollers (802) which are arranged in an up-down two-row staggered mode, wherein the roller height adjusting rocker arms (801) are used for adjusting the distance between the upper row of rollers and the lower row of rollers; the hollow copper core (1102) penetrates through the upper row of rollers and the lower row of rollers to realize straightening and feeding;
the pneumatic scissors assembly (9) comprises a scissors base (901), a scissors driving cylinder (902), an I-shaped adapter (903), a T-shaped connecting piece (904), pneumatic scissors (905), a T-shaped support (906) and a scissors sliding rail (907), wherein the scissors base (901) is installed on a workbench (1), the scissors driving cylinder (902) is installed on the scissors base (901), the pneumatic scissors (905) are installed on the scissors driving cylinder (906) in a matched mode with the action end of the scissors driving cylinder (902) through the I-shaped adapter (903) and the T-shaped connecting piece (904), the pneumatic scissors (905) are installed on the T-shaped support (906), the T-shaped support (907) is installed on the scissors sliding rail (907), and the pneumatic scissors (905) can reciprocate along the scissors sliding rail (907) under the driving of the scissors driving cylinder (902).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810282317.7A CN108188522B (en) | 2017-01-10 | 2017-01-10 | Laser fusion brazing composite welding device for sleeved hollow copper pipe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710015233.2A CN106493574B (en) | 2017-01-10 | 2017-01-10 | A kind of the laser welding-brazing complex welding method and device of socket hollow copper tubing |
| CN201810282317.7A CN108188522B (en) | 2017-01-10 | 2017-01-10 | Laser fusion brazing composite welding device for sleeved hollow copper pipe |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710015233.2A Division CN106493574B (en) | 2017-01-10 | 2017-01-10 | A kind of the laser welding-brazing complex welding method and device of socket hollow copper tubing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108188522A CN108188522A (en) | 2018-06-22 |
| CN108188522B true CN108188522B (en) | 2020-03-06 |
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| CN201810282317.7A Active CN108188522B (en) | 2017-01-10 | 2017-01-10 | Laser fusion brazing composite welding device for sleeved hollow copper pipe |
| CN201710015233.2A Expired - Fee Related CN106493574B (en) | 2017-01-10 | 2017-01-10 | A kind of the laser welding-brazing complex welding method and device of socket hollow copper tubing |
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| CN201710015233.2A Expired - Fee Related CN106493574B (en) | 2017-01-10 | 2017-01-10 | A kind of the laser welding-brazing complex welding method and device of socket hollow copper tubing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107838572B (en) * | 2017-11-01 | 2020-08-25 | 湖北三江航天红阳机电有限公司 | Welding method of pintle type injector |
| CN108747398B (en) * | 2018-06-22 | 2024-04-26 | 宁波赛夫科技有限公司 | Capillary copper pipe integrated cutting machine |
| CN109702402B (en) * | 2019-03-07 | 2021-05-07 | 江苏智慧工场技术研究院有限公司 | Device and process for welding pipeline by adopting middle sleeve |
| CN111745261B (en) * | 2020-07-14 | 2022-02-11 | 成都岷江精密刀具有限公司 | TC bearing machining process |
| CN113385804B (en) * | 2021-06-22 | 2022-08-23 | 南昌航空大学 | Transition liquid phase auxiliary electromagnetic pulse welding device and method |
| CN114378400B (en) * | 2021-12-31 | 2023-01-03 | 日出东方控股股份有限公司 | Automatic feeding and welding system for plate core of ultra-large flat plate collector |
| CN114619145B (en) * | 2022-03-10 | 2023-10-03 | 湖北三江航天红峰控制有限公司 | Laser welding device and welding method for thin-wall part |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07237192A (en) * | 1994-03-01 | 1995-09-12 | Hitachi Metals Ltd | Binding hole punching follow drill |
| JP3012568B2 (en) * | 1997-09-12 | 2000-02-21 | 日本電気エンジニアリング株式会社 | Optical device die bonding method and die bonding apparatus |
| US8447402B1 (en) * | 2006-03-31 | 2013-05-21 | Alfred E. Mann Foundation For Scientific Research | Zirconia to platinum assembly using a titanium connector |
| CN101412153B (en) * | 2008-11-07 | 2011-03-16 | 北京智博高科生物技术有限公司 | Process and equipment for welding sealing thin-wall metal tube using laser technique |
| JP5740186B2 (en) * | 2011-03-22 | 2015-06-24 | 株式会社東芝 | Soldering apparatus and electronic component manufacturing method |
| CN102363247B (en) * | 2011-10-17 | 2014-07-09 | 深圳市大族激光科技股份有限公司 | Laser welding method and device |
| CN102728946A (en) * | 2012-07-03 | 2012-10-17 | 阮俊康 | Automatic welding production line of lighter |
| CN102897532A (en) * | 2012-09-28 | 2013-01-30 | 苏州市圣玛特电机设备制造有限公司 | Automatic feeding mechanism of rotor aluminum casting machine |
| CN203599675U (en) * | 2013-10-30 | 2014-05-21 | 深圳市普德激光设备有限公司 | Tin feeding device special for laser tin welding machine |
| CN103862123A (en) * | 2014-03-11 | 2014-06-18 | 南京理工大学 | Laser welding method for solar heat collecting board core |
| CN103878489B (en) * | 2014-04-02 | 2015-08-05 | 温州职业技术学院 | A kind of laser hand engraving device |
| CN104148807A (en) * | 2014-08-27 | 2014-11-19 | 苏州菱欧自动化设备有限公司 | Laser welding machine for lithium battery |
| CN104729327A (en) * | 2015-03-18 | 2015-06-24 | 全椒赛德利机械有限公司 | Copper core radiator and preparing technology thereof |
| CN105710537A (en) * | 2016-05-05 | 2016-06-29 | 北京隆源自动成型系统有限公司 | Ultrasonic assistec laser electric arc composite welding method of aluminum alloy |
| CN105772943B (en) * | 2016-05-11 | 2018-02-13 | 温州职业技术学院 | Multistation laser welding automates outfit |
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2017
- 2017-01-10 CN CN201810282317.7A patent/CN108188522B/en active Active
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| CN106493574A (en) | 2017-03-15 |
| CN106493574B (en) | 2018-08-28 |
| CN108188522A (en) | 2018-06-22 |
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Effective date of registration: 20230206 Address after: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 325000 Wenzhou City National University Science Park incubator, No. 38 Dongfang South Road, Ouhai Economic Development Zone, Wenzhou, Zhejiang Patentee before: WENZHOU VOCATIONAL & TECHNICAL College |
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Effective date of registration: 20230613 Address after: 212000 Xinfeng Town Industrial Park, Dantu District, Zhenjiang City, Jiangsu Province Patentee after: JIANGSU SUJIAN ROAD & BRIDGE MACHINE CO.,LTD. Address before: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee before: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |