CN113714640B - Sheet laser welding device and welding method thereof - Google Patents
Sheet laser welding device and welding method thereof Download PDFInfo
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- CN113714640B CN113714640B CN202111052981.0A CN202111052981A CN113714640B CN 113714640 B CN113714640 B CN 113714640B CN 202111052981 A CN202111052981 A CN 202111052981A CN 113714640 B CN113714640 B CN 113714640B
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- sliding
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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
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0408—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work for planar work
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention relates to the technical field of laser welding and discloses a thin plate laser welding device and a welding method thereof. The power rod wheel is extended into the interior of the pull-back groove and pulled back by the conveyor belt towards the opposite direction of the transmission to achieve the effect of repeated fusion welding in the welding process, so that the cooling speed of the welding pool is reduced, the air holes are eliminated, slight vibration is generated in the transmission and pull-back process, the air bubbles can be discharged in the vibration process of the pool, and meanwhile, the laser beam plays a role of stirring in the interior of the pool in the process of pulling back the sliding assembly by the power rod wheel, so that the air bubbles are discharged.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a thin plate laser welding device and a welding method thereof.
Background
The laser welding uses high energy density laser beam as heat source to melt and solidify the material surface layer to form a whole, so as to achieve the welding purpose.
In the traditional welding process, the inside of a welded small hole is in an unstable vibration state, the flow of the small hole and a molten pool is very severe, metal steam in the small hole is sprayed outwards to cause steam vortex at the opening of the small hole, protective gas is involved in the bottom of the small hole, the protective gas enters the inside of the molten pool in a bubble form along with the movement of the small hole in the welding direction, and the bubbles are not escaped until the bubbles escape and remain at the welding seam to form air holes due to the very fast cooling speed of the welding seam of laser welding, so that the welding effect is affected; in the welding process, the welding seam is prevented from being oxidized in the cooling process due to the effect of the protective gas, but the part around the welding seam is oxidized at high temperature to generate black substances due to the combined effect of the high temperature of the welding seam and the high temperature laser beam emitted by the laser head, and the black substances are required to be polished later to remove oxides, so that the subsequent treatment procedures are increased, the treatment time is prolonged, and the cost of laser welding is increased.
Disclosure of Invention
Aiming at the defects of the prior laser welding device in the use process, the invention provides a thin plate laser welding device and a welding method thereof, which have the advantages of self-eliminating air holes, improving the welding depth-to-height ratio and easy fixation, and solve the technical problems in the prior art.
The invention provides the following technical scheme: the utility model provides a sheet metal laser welding device, includes the conveyer belt, the top swing joint of conveyer belt has the slip subassembly, the bottom both sides sliding connection of slip subassembly has fixed track, the welding groove has been seted up in the front of slip subassembly, fixed track's bottom fixedly connected with support, the bottom activity of support has cup jointed the power pole wheel, the fixed slot has been seted up to the inside of slip subassembly, the bottom of welding groove runs through with the top of fixed slot, the inside of slip subassembly has been seted up and has been located the sliding tray with the fixed slot below, and the slip subassembly has the slide plate through sliding tray sliding connection, the screens groove has been seted up on the top of slide plate, and the slide plate has the screens head through screens groove swing joint, one side fixedly connected with spring of slide plate, the movable hole that is located between fixed slot and the slide plate has been seted up to the inside of slip subassembly, and the movable hole swing joint has the movable head through the movable hole, one side of slide plate and the bottom swing joint of movable head, the front and the back of slip subassembly have been seted up respectively the draw-back groove.
Preferably, the sliding assembly is "concave" in shape.
Preferably, the welding groove is Y-shaped, and the bottom end length of the welding groove is one fourth of the length of the sliding component.
Preferably, the length of the outer side of the power rod wheel extending to the inner part of the pull-back groove at the bottom end of the sliding assembly is one half of the diameter of the power rod wheel.
Preferably, the height of the fixing groove is the same as that of the clamping head, and the height of the fixing groove is half of that of the movable head.
Preferably, the pull-back grooves are transversely and uniformly distributed at the bottom end of the sliding component, the cross section of the pull-back grooves is in a quarter ellipse shape, and the vertical edges of the pull-back grooves face to the opposite conveying direction of the conveying belt.
A welding method of a sheet laser welding apparatus, comprising the steps of:
s1, placing the thin plate into the fixed groove to prop against the movable head, so that the movable head moves downwards;
s2, the movable head pushes the sliding plate to move to one side, so that the clamping head moves upwards to abut against the thin plate;
s3, the conveyor belt and the power rod wheel work, after the conveyor belt conveys the sliding assembly to move to one side for a certain distance, the outer side of the power rod wheel stretches into the inner side of the pull-back groove to be pulled to the opposite direction of conveying of the sliding assembly and move by half of the conveying distance of the conveyor belt while the power rod wheel rotates, the conveyor belt continuously conveys the sliding assembly to one side, and the outer side of the power rod wheel stretches into the inner side of the pull-back groove to be pulled to the opposite direction of conveying of the sliding assembly and move by half of the conveying distance of the conveyor belt while the power rod wheel rotates, so that the process is repeated;
and S4, when the pull-back groove is far away from the power rod wheel, namely the laser thin plate is welded, taking out the thin plate.
The invention has the following beneficial effects:
1. according to the invention, the conveyor belt conveys a certain distance to one side, the power rod wheel stretches into the interior of the pull-back groove, and the sliding component is pulled back towards the opposite direction of conveying by one half of the conveying distance of the conveyor belt, so that the effect of repeated fusion welding in the welding process is achieved, the cooling speed of a welding pool is reduced, air holes are eliminated, slight vibration exists in the conveying and pulling-back processes, the gas bubbles can be caused to be discharged from the pool in the vibration process, and meanwhile, the laser beam plays a role of stirring the interior of the pool in the process of pulling back the sliding component by the power rod wheel, so that the gas bubbles can be caused to be discharged.
2. According to the invention, through the shape setting of the welding groove and the fixing effect of the clamping head, the thin plate forms a sealing effect between the inside of the fixing groove and the top end of the fixing groove, and when the shielding gas argon is blown out in the laser welding process, because the density of the argon is greater than that of the air, the argon can gather at the bottom end of the welding groove, namely the surface of the thin plate, so that the surface of the thin plate around the welding seam is protected from high-temperature oxidation, the subsequent treatment procedures are reduced, the laser welding working efficiency is improved, and the cost of laser welding is reduced.
Drawings
FIG. 1 is a schematic elevation view of the structure of the present invention in a cut-away;
FIG. 2 is a schematic top view of the structure of the present invention;
fig. 3 is a schematic side view of the structure of the present invention in a cut-away view.
In the figure: 1. a conveyor belt; 2. a fixed rail; 3. a sliding assembly; 4. a welding groove; 5. a bracket; 6. a power lever wheel; 7. a fixing groove; 8. a sliding plate; 9. a clamping head; 10. a spring; 11. a movable hole; 12. a movable head; 13. the groove is pulled back.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, a thin plate laser welding device comprises a conveyor belt 1, the top swing joint of conveyor belt 1 has a sliding component 3, the shape of sliding component 3 is "concave", sliding component 3's bottom both sides sliding connection has fixed track 2, welding groove 4 has been seted up in the front of sliding component 3, fixed track 2's bottom fixedly connected with support 5, power lever wheel 6 has been cup jointed in the bottom activity of support 5, fixed slot 7 has been seted up to sliding component 3's inside, welding groove 4's bottom runs through with fixed slot 7's top, sliding component 3 has seted up the sliding groove that is located with fixed slot 7 below, and sliding component 3 has a sliding plate 8 through sliding groove sliding connection, the clamping groove has been seted up on sliding plate 8's top, and sliding plate 8 has a clamping head 9 through clamping groove swing joint, one side fixedly connected with spring 10 of sliding plate 8, sliding component 3's inside has been seted up and is located the movable hole 11 between fixed slot 7 and the sliding plate 8, and sliding plate 3 has been movably connected through movable hole 11 and clamping head 9, sliding component 3 has a sliding plate's bottom through movable connection 12 and a movable connection 13 back side of sliding plate 8, the front side 13 has been seted up respectively.
The shape of the welding groove 4 is Y, and the bottom end length of the welding groove 4 is one fourth of the length of the sliding component 3, the shape of the welding groove 4 is set and the fixing effect of the clamping head 9 is achieved, when the shielding gas argon is blown out in the laser welding process, the argon is concentrated at the bottom end of the welding groove 4, namely the surface of the thin plate, because the argon density is greater than air, so that the surface of the thin plate around the welding line is protected from high-temperature oxidation, and the subsequent processing procedures are reduced.
The length of the outside of the power rod wheel 6 extending to the inside of the pull-back groove 13 at the bottom end of the sliding component 3 is one half of the diameter of the power rod wheel 6, so that the power rod wheel 6 can be pulled back to the sliding component 3 through the pull-back groove 13, and the repeated welding can be directly performed in the welding process, thereby improving the working efficiency.
The height of the fixing groove 7 is the same as that of the clamping head 9, and the height of the fixing groove 7 is half of that of the movable head 12, so that the thin plate can be fixed in the fixing groove 7, and deformation in laser welding is avoided.
The pull-back grooves 13 are transversely and uniformly distributed at the bottom end of the sliding component 3, the cross section of the pull-back grooves 13 is in a quarter ellipse shape, and the vertical sides of the pull-back grooves 13 face the opposite conveying direction of the conveying belt 1, so that the power rod wheels 6 can enter the interior of the pull-back grooves 13 and push one side of the pull-back grooves 13 to pull back the sliding component 3.
The conveying direction of the conveying belt 1 is opposite to the rotating direction of the power rod wheel 6, the effect of conveying and pulling back can be achieved, repeated fusion welding and bubble discharge are carried out in the welding process, the movement of the conveying belt 1 and the power rod wheel 6 are alternate, the conveying speed of the conveying belt 1 is set to be equal to the number of the outer side rods of the power rod wheel 6, the height of the outer side rods of the power rod wheel 6 and the integral rotating angular speed of the power rod wheel 6, after the conveying belt 1 conveys the sliding component 3 to one side by a certain distance, the conveying belt 1 stops, the power rod wheel 6 rotates, the outer side of the power rod wheel 6 stretches into the inner side of the pulling back groove 13 to be pulled to the opposite direction of the conveying component 3 and move one half of the conveying distance of the conveying belt 1, the rotating and stopping of the power rod wheel 6 is carried out, and the adjacent rod top ends of the outer side ends of the power rod wheel 6 are lower than the bottom of the sliding component 3, so that interference cannot be blocked for subsequent conveying of the sliding component 3.
Wherein, the both sides part of sliding plate 8 is hard material, and the mid portion of sliding plate 8, the bottom part that sliding plate 8 is located screens head 9 promptly is elasticity soft material, can be according to the protruding height of sheet elastic adjustment screens head 9 to fixed sheet.
A welding method of a sheet laser welding apparatus, comprising the steps of:
s1, placing the thin plate into the fixed groove 7 to prop against the movable head 12, so that the movable head 12 moves downwards;
s2, the movable head 12 pushes the sliding plate 8 to move to one side, so that the clamping head 9 moves upwards to abut against the thin plate;
s3, the conveyor belt 1 and the power rod wheel 6 work, after the conveyor belt 1 conveys the sliding assembly 3 to move to one side by a certain distance, the power rod wheel 6 rotates, the outer side of the power rod wheel 6 stretches into the inside of the pull-back groove 13 to be pulled to the opposite direction of conveying of the sliding assembly 3 and move by half of the conveying distance of the conveyor belt 1, the conveyor belt 1 continues to enable the sliding assembly 3 to be conveyed to one side, the outer side of the power rod wheel 6 stretches into the inside of the pull-back groove 13 to be pulled to the opposite direction of conveying of the sliding assembly 3 and move by half of the conveying distance of the conveyor belt 1 while the power rod wheel 6 rotates, and the process is repeated;
and S4, when the pull-back groove 13 is far away from the power rod wheel 6, namely the laser sheet welding is finished, taking out the sheet.
The application method (working principle) of the invention is as follows:
the welding head is arranged on one side of a movable head 12 at the top end of a sliding component 3, two thin plates to be welded are placed in the fixed groove 7 side by side from one side of the sliding component 3, the edges of the two thin plates to be welded are aligned, the edges of the welded edges are in the middle of the inside of the welded groove 4 and are parallel to the edges of the two sides of the welded edges until one side of the thin plates abuts against the movable head 12, the movable head 12 abuts downwards, one side of the movable head 12 pushes a sliding plate 8 to move to one side, a spring 10 contracts, a clamping head 9 is pushed by a clamping groove at the top end of the sliding plate 8 to move upwards, the top end of the clamping head 9 abuts against the placed thin plates to fix, the sliding component 3 is conveyed to the other side by the conveyor belt 1, the laser welding head performs laser welding between the two thin plates in the sliding component 3 through the welded groove 4, protective gas is blown into the inside of the welded groove 4, after the conveyor belt 1 is conveyed to one side by a certain distance, the conveyor belt 1 is stopped, the outer side of a power rod wheel 6 stretches into the inside of a pullback groove 13 to pull the sliding component 3 to one half of the conveyor belt 1, then the conveyor belt 1 is continuously conveyed to the other side by a certain distance, after the outer side of the power rod wheel 6 stretches into the inner side of the pullback component 13, and the power rod 1 is stretched to the inner side of the pullback component to the side of the sliding component to the side, and then the two sides is stopped, and the power rod is stretched to the bottom.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Laser welding device for thin plates, comprising a conveyor belt (1), characterized in that: the utility model discloses a conveyer belt, including conveyer belt (1) and fixed rail (3), the top swing joint of conveyer belt (1) has sliding component (3), the fixed rail (2) is connected with in the bottom both sides sliding connection of sliding component (3), welding groove (4) have been seted up in the front of sliding component (3), the bottom fixedly connected with support (5) of fixed rail (2), power pole wheel (6) have been cup jointed in the bottom activity of support (5), fixed slot (7) have been seted up in the inside of sliding component (3), the bottom of welding groove (4) runs through with the top of fixed slot (7), the inside of sliding component (3) has seted up the sliding groove that is located fixed slot (7) below, and sliding component (3) have sliding plate (8) through sliding groove sliding connection, the screens groove has been seted up on the top of sliding plate (8), and sliding plate (8) have screens head (9) through screens groove swing joint, one side fixedly connected with spring (10) of sliding plate (8), the inside of sliding component (3) has been seted up and has been located between fixed slot (7) and sliding plate (8) and top (11) and movable connection hole (11) through movable connection (11), one side of the sliding plate (8) is movably connected with the bottom end of the movable head (12), and the front and the back of the bottom end of the sliding assembly (3) are respectively provided with a pull-back groove (13);
the pull-back grooves (13) are transversely and uniformly distributed at the bottom end of the sliding assembly (3), the cross section of the pull-back grooves (13) is in a quarter ellipse shape, and the vertical edges of the pull-back grooves (13) face the conveying reverse direction of the conveying belt (1).
2. A sheet laser welding apparatus according to claim 1, wherein: the sliding component (3) is concave in shape.
3. A sheet laser welding apparatus according to claim 1, wherein: the welding groove (4) is Y-shaped, and the bottom end length of the welding groove (4) is one fourth of the length of the sliding component (3).
4. A sheet laser welding apparatus according to claim 1, wherein: the length of the outer side of the power rod wheel (6) extending into the pull-back groove (13) at the bottom end of the sliding component (3) is one half of the diameter of the power rod wheel (6).
5. A sheet laser welding apparatus according to claim 1, wherein: the height of the fixing groove (7) is the same as that of the clamping head (9), and the height of the fixing groove (7) is one half of that of the movable head (12).
6. Welding method of a sheet metal laser welding apparatus according to claim 1, characterized by the following operation steps:
s1, placing the thin plate into the fixed groove (7) to prop against the movable head (12) so that the movable head (12) moves downwards;
s2, the movable head (12) pushes the sliding plate (8) to move to one side, so that the clamping head (9) moves upwards to abut against the thin plate;
s3, the conveyor belt (1) and the power rod wheel (6) work, after the conveyor belt (1) conveys the sliding assembly (3) to move to one side for a certain distance, the power rod wheel (6) rotates, the outer side of the power rod wheel (6) stretches into the reverse direction conveyed by the sliding assembly (3) and moves by half of the conveying distance of the conveyor belt (1) while stretching into the pull-back groove (13), the conveyor belt (1) continues to convey the sliding assembly (3) to one side, and the outer side of the power rod wheel (6) stretches into the reverse direction conveyed by the sliding assembly (3) and moves by half of the conveying distance of the conveyor belt (1) while the power rod wheel (6) rotates, so that the process is repeated;
and S4, when the pull-back groove (13) is far away from the power rod wheel (6), namely the laser thin plate is welded, taking out the thin plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111052981.0A CN113714640B (en) | 2021-09-09 | 2021-09-09 | Sheet laser welding device and welding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111052981.0A CN113714640B (en) | 2021-09-09 | 2021-09-09 | Sheet laser welding device and welding method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113714640A CN113714640A (en) | 2021-11-30 |
| CN113714640B true CN113714640B (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111052981.0A Active CN113714640B (en) | 2021-09-09 | 2021-09-09 | Sheet laser welding device and welding method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2455600A1 (en) * | 1974-10-28 | 1976-04-29 | Bbc Brown Boveri & Cie | PLANE PREPARED FOR ELECTRON BEAM WELDING OR CURVED WORKPIECES |
| CN1231952A (en) * | 1997-11-10 | 1999-10-20 | 液体空气乔治洛德方法利用和研究有限公司 | Method and apparatus for reflow metallic surfaces |
| CN101722348A (en) * | 2008-10-23 | 2010-06-09 | 南车青岛四方机车车辆股份有限公司 | Welding method of stainless steel sheet |
| CN108581167A (en) * | 2018-06-27 | 2018-09-28 | 西安飞机工业（集团）有限责任公司 | A kind of asymmetric fusion penetration double-side electronic beam soldering method of big thickness titanium alloy sheet |
| CN109604800A (en) * | 2018-12-22 | 2019-04-12 | 山西汾西重工有限责任公司 | The three step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome |
| CN109865942A (en) * | 2017-12-04 | 2019-06-11 | 大族激光科技产业集团股份有限公司 | A kind of method for laser welding and system |
-
2021
- 2021-09-09 CN CN202111052981.0A patent/CN113714640B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2455600A1 (en) * | 1974-10-28 | 1976-04-29 | Bbc Brown Boveri & Cie | PLANE PREPARED FOR ELECTRON BEAM WELDING OR CURVED WORKPIECES |
| CN1231952A (en) * | 1997-11-10 | 1999-10-20 | 液体空气乔治洛德方法利用和研究有限公司 | Method and apparatus for reflow metallic surfaces |
| CN101722348A (en) * | 2008-10-23 | 2010-06-09 | 南车青岛四方机车车辆股份有限公司 | Welding method of stainless steel sheet |
| CN109865942A (en) * | 2017-12-04 | 2019-06-11 | 大族激光科技产业集团股份有限公司 | A kind of method for laser welding and system |
| CN108581167A (en) * | 2018-06-27 | 2018-09-28 | 西安飞机工业（集团）有限责任公司 | A kind of asymmetric fusion penetration double-side electronic beam soldering method of big thickness titanium alloy sheet |
| CN109604800A (en) * | 2018-12-22 | 2019-04-12 | 山西汾西重工有限责任公司 | The three step welding method of aluminium alloy thick plate vacuum electron beam of gas hole defect can be overcome |
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| CN113714640A (en) | 2021-11-30 |
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Effective date of registration: 20230808 Address after: Room 102, 1st to 3rd floors, Building 7, Phase 1, Shengda Bay City, No. 268 Beibu Bay Avenue, Gangkou District, Fangchenggang City, Guangxi Zhuang Autonomous Region, 538001 Applicant after: Fangchenggang Ruitai Laser Technology Co.,Ltd. Address before: 510080 first floor, Huibang Industrial Park, No. 3, Nanye SANHENG Road, Nanling, Longgui street, Baiyun District, Guangzhou, Guangdong Province Applicant before: Wang Qiu |
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