CN112975172B - Laser welding tool - Google Patents
Laser welding tool Download PDFInfo
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- CN112975172B CN112975172B CN202110182966.1A CN202110182966A CN112975172B CN 112975172 B CN112975172 B CN 112975172B CN 202110182966 A CN202110182966 A CN 202110182966A CN 112975172 B CN112975172 B CN 112975172B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- 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
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a laser welding tool, which comprises: the tooling bottom plate, the locating pin assembly, the locating and clamping assembly and the welding seam locating and clamping assembly are arranged on the tooling bottom plate; the positioning pin assembly, the positioning and clamping assembly and the welding seam positioning and clamping assembly are connected with the tool bottom plate; the positioning pin assembly is used for being matched with a positioning hole in a workpiece, the positioning and clamping assembly is used for clamping the surface of the workpiece, and the workpiece is clamped and fixed through the positioning pin assembly and the positioning and clamping assembly; and the welding seam positioning and clamping assembly is used for fixing the welding seam of the workpiece. The invention can avoid the movement of the welding seam by fixing the position of the welding seam, thereby controlling the gap at the welding seam and ensuring that the laser beam only works at the welding position, thereby meeting the requirements of the laser self-fluxing welding process and quality.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a laser welding tool.
Background
When door inner panel and door frame reinforcing plate welding station are made in white automobile body to tradition, mainly adopt resistance weld process and resistance weld frock, through the development of industry and the progress of science and technology, traditional resistance weld process is replaced by laser flight welding process gradually. Wherein, the body-in-white refers to the original body which is not processed and painted. Traditional resistance spot welding compresses tightly the weldment between two electrodes, applys the electric current, utilizes the resistance heat effect that the electric current flow produced through work piece contact surface and adjacent zone to heat it to melting or plastic state to reach the metal bonding, resistance spot welding is widely used in the automotive industry, and when traditional resistance spot welding equipment welded, the position of solder joint was unset, has reduced the uniformity of product, has influenced automobile body quality to a certain extent.
The laser self-welding mode is characterized in that two or more parts to be welded are melted and finally cooled to be condensed into a whole, and the welding mode does not need to add auxiliary welding flux or filler and completely utilizes the materials of the workpieces to be welded together. The laser welding process has the advantages of high efficiency, good flexibility and the like. In a novel laser self-fusion welding rapid welding system, the traditional resistance welding tool obviously cannot meet the requirements of a laser self-fusion welding process. The resistance welding tool is used in a laser self-fluxing welding system, and has the main defects that the welding lap gap cannot be well controlled, and the quality defects of insufficient welding, welding penetration and the like can be caused due to unstable control of the lap gap. Therefore, the laser self-fluxing welding tool for the inner plate of the vehicle door of the body in white and the reinforcing plate of the door frame is needed to meet the requirements of the laser self-fluxing welding process and quality, and the requirements on the welding process and the tool are higher.
Disclosure of Invention
The invention provides a laser welding tool, and aims to solve the technical problems that laser self-fusion welding of an inner door panel and a reinforcing door frame panel is difficult, and particularly lap joint gap control is unstable in the prior art.
In order to achieve the purpose, the invention provides the following scheme: a laser welding tool, it includes: the tooling bottom plate, the locating pin assembly, the locating and clamping assembly and the welding seam locating and clamping assembly are arranged on the tooling bottom plate; the positioning pin assembly, the positioning and clamping assembly and the welding seam positioning and clamping assembly are connected with the tool bottom plate;
the positioning pin assembly is used for being matched with a positioning hole in a workpiece, the positioning and clamping assembly is used for clamping the surface of the workpiece, and the workpiece is clamped and fixed through the positioning pin assembly and the positioning and clamping assembly; and the welding seam positioning and clamping assembly is used for fixing the welding seam of the workpiece.
Preferably, the positioning and clamping assembly comprises: the workpiece positioning support is connected with the tool bottom plate; the workpiece positioning transfer block is connected with the workpiece positioning support; the workpiece positioning cylinder is arranged on the workpiece positioning support; the workpiece positioning rotating arm is connected with a power output shaft of the workpiece positioning air cylinder; and one end of the workpiece clamping arm is connected with the workpiece positioning rotating arm, and a clamping space for clamping the workpiece is formed between the other end of the workpiece clamping arm and the workpiece positioning switching block.
Preferably, the positioning and clamping assembly further comprises:
the first clamping positioning block is connected with the lower surface of the other end of the workpiece clamping arm;
and the second clamping positioning block is connected with the upper surface of the workpiece positioning adapter plate and corresponds to the first clamping positioning block in position, and a clamping space for clamping a workpiece is formed between the first clamping positioning block and the second clamping positioning block.
Preferably, the positioning and clamping assembly further comprises: the upper workpiece positioning limiting block is connected with the lower end face of the workpiece clamping arm;
and the lower workpiece positioning limiting block is connected to the workpiece positioning adapter plate and corresponds to the upper limiting block in position, and the upper workpiece positioning limiting block and the lower workpiece positioning limiting block are matched with each other.
Preferably, the weld positioning and clamping assembly comprises: the welding seam positioning support is connected with the tool bottom plate; the welding seam positioning transfer block is connected with the welding seam positioning support; the welding seam positioning cylinder is arranged on the welding seam positioning support; the welding seam positioning rotating arm is connected with a power output shaft of the welding seam positioning cylinder; one end of the welding seam clamping arm is connected with the welding seam positioning rotating arm; the upper welding seam clamping block is connected with the other end of the welding seam clamping arm; and the lower welding seam clamping block is connected with the upper end surface of the welding seam positioning support and corresponds to the upper welding seam clamping block in position, and a clamping space for clamping and fixing a welding seam is formed between the upper welding seam clamping block and the lower welding seam clamping block.
Preferably, the upper welding seam clamping block is provided with a containing cavity which is used for containing the welding seam and is communicated up and down, and the containing cavity is integrally of a horn-shaped structure.
Preferably, an included angle α formed by the outer peripheral surface of the accommodating cavity and the horizontal plane satisfies the condition: alpha is more than or equal to 60 degrees and less than or equal to 85 degrees.
Preferably, the length a of the weld is 20-30mm, the width b of the weld is 1-3mm, and the distance c between the upper edge of the weld and the upper edge of the lower opening 4112 of the accommodating cavity 411 meets the condition: c is more than or equal to 2mm and less than or equal to 10mm, and the distance d between the lower edge of the welding seam and the lower edge of the opening 4112 at the lower part of the containing cavity 411 meets the condition that: d is not less than 2mm and not more than 10mm, and the distance f between the left edge of the welding line and the left edge of the lower opening 4112 of the accommodating cavity 411 meets the condition that: f is not less than 2mm and not more than 10mm, and the distance e between the right edge of the welding seam and the right edge of the opening 4112 at the lower part of the containing cavity 411 meets the condition that: e is more than or equal to 2mm and less than or equal to 10mm.
Preferably, the upper bead clamping block is formed as a U-shaped notch portion penetrating vertically for receiving the bead.
Preferably, the length a1 of the welding seam is 20-30mm, the width b1 of the welding seam is 1-3mm, and the distance c1 between the upper edge of the welding seam and the upper edge of the U-shaped notch part meets the following conditions: c1 is more than or equal to 2mm and less than or equal to 10mm, and the distance e1 between the left edge of the welding seam and the left edge of the U-shaped notch part meets the condition: e1 is more than or equal to 2mm and less than or equal to 10mm, and the distance d1 between the right edge of the welding seam and the right edge of the U-shaped notch part meets the condition: d1 is more than or equal to 2mm and less than or equal to 10mm.
Preferably, the weld positioning and clamping assembly further comprises:
the upper welding seam positioning limiting block is connected with the lower end face of the welding seam clamping arm;
and the lower welding seam positioning limiting block is connected to the welding seam positioning transfer block and corresponds to the upper welding seam positioning limiting block in position, and the upper welding seam positioning limiting block and the lower welding seam positioning limiting block are matched with each other.
Preferably, the workpiece comprises one or more of a body-in-white vehicle door inner plate, a door frame reinforcing plate, a side wall and a tail door.
The laser welding tool is compact in structure and reasonable in mechanism layout, can meet the welding operation requirements of the same or different workpieces, different welding seams and different welding modes, can prevent the welding seams from moving by fixing the positions of the welding seams, controls the gaps at the welding seams, and ensures that laser beams only operate at the welding positions, so that the requirements of the laser self-fluxing welding process and quality are met; meanwhile, the upper welding seam clamping blocks in different forms are designed according to different conditions, so that the laser can be prevented from being shielded by the upper welding seam clamping blocks, the welding can be accurately irradiated to the welding seam to complete welding, and the upper welding seam clamping blocks cannot be damaged.
Drawings
The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings, wherein like elements are numbered alike, and wherein:
FIG. 1 is a schematic view of an installation structure of a laser welding tool according to the present invention;
FIG. 2 is a schematic view of a locating pin assembly of the laser welding tool of the present invention;
FIG. 3a is a schematic view of the positioning and clamping assembly of the laser welding tool in clamping state;
FIG. 3b is a schematic view of the positioning and clamping assembly of the laser welding tool of the present invention in an open position;
FIG. 4 is a schematic structural view of a weld positioning and clamping assembly of the laser welding tool of the present invention;
FIG. 5a is a schematic structural view of an upper weld holding block in embodiment 3 of the present invention;
FIG. 5b is a front view of the receiving chamber in embodiment 3 of the present invention;
FIG. 5c is a top view of the weld positioning and clamping assembly of example 3 of the present invention clamping a weld;
FIG. 6a is a schematic structural view of an upper weld holding block in embodiment 4 of the present invention;
FIG. 6b is a top view of the weld seam positioning and clamping assembly of example 4 of the present invention clamping the weld seam.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments, but the present invention is not limited to the following embodiments.
Example 1:
the present embodiment provides a laser welding tool, as shown in fig. 1, which includes: the fixture comprises a tool bottom plate 1, a positioning pin assembly 2, a positioning clamping assembly 3 and a welding seam positioning clamping assembly 4; the positioning pin assembly 2, the positioning and clamping assembly 3 and the welding seam positioning and clamping assembly 4 are all connected with the tooling bottom plate 1;
the positioning pin assembly 2 is used for being matched with a positioning hole 5 on a workpiece 6, the positioning and clamping assembly 3 is used for clamping the surface of the workpiece 6, and the workpiece 6 is clamped and fixed through the positioning pin assembly 2 and the positioning and clamping assembly 3; and the weld positioning and clamping assembly 4 is used for fixing the weld of the workpiece 6.
In this embodiment, the dowel pin assembly 2, the positioning and clamping assembly 3 and the welding seam positioning and clamping assembly 4 can be multiple, and can be installed in different directions on the tool base plate 1 according to the size, shape and the like of the workpiece 6, so that different workpieces can be clamped, and the universality of the tool and the sufficient clamping and positioning of the workpieces are improved.
And simultaneously, work piece 6 includes in white automobile body door inner panel, door frame reinforcing plate, side wall, the tail-gate one kind or several kinds, laser welding can be above-mentioned same kind of work piece, or the welding between the different kinds of work piece, like the welding between white automobile body door inner panel and the door frame reinforcing plate etc. and the laser welding mode includes laser fusion welding (like white automobile body door laser fusion welding, side wall laser fusion welding), laser flight welding (like tail-gate laser flight welding etc.) one kind or several kinds in the class, the welding seam can be lap-weld, stitch-weld straight line welding seam, stitch-weld C shape welding seam etc. one kind or several kinds.
Furthermore, the tool bottom plate 1 is provided with a reference hole 111 and a hanging ring 112 for positioning coordinate reference, so that the reference hole 111 can be used as an installation reference of other components, and the whole laser welding tool can be lifted and detached through the hanging ring 112.
Further, as shown in fig. 2, the dowel assembly 2 includes: a positioning pin support 24 detachably connected to the tool bottom plate 1 by bolts or the like; a positioning pin connecting block 23 detachably connected to the positioning pin support 24 by a bolt or the like; a pin boss 22 detachably connected to the connection block 23 by a bolt or the like; the positioning pin 21 is arranged on the pin seat 22 through a pin hole and penetrates through the positioning hole 5 on the workpiece 6, meanwhile, the center line of the positioning hole 5 is superposed or parallel with the axial center line of the positioning pin 21, and the diameter of the positioning pin 21 is slightly smaller than that of the positioning hole 5, so that the workpiece 6 is positioned; in this embodiment, a first adjusting shim 26 is disposed at a joint between the pin seat 22 and the connecting block 23, and/or a second adjusting shim 27 is disposed at a joint between the connecting block 23 and the positioning pin support 24, so that the assembly accuracy between the components is adjusted by fine-adjusting the first adjusting shim 26 and the second adjusting shim 27, and the positioning error of the positioning pin 21 is reduced.
As shown in fig. 3a-3b, the positioning and clamping assembly 3 comprises: a workpiece positioning support 34 detachably connected to the tool bottom plate 1 by bolts or the like; a workpiece positioning transfer block 33 connected to the workpiece positioning support 34; a workpiece positioning cylinder 38 detachably mounted on the workpiece positioning support 34; a workpiece positioning rotating arm 39 connected to a power output shaft of the workpiece positioning cylinder 38; a workpiece clamping arm 35, one end of which is connected with the workpiece positioning rotating arm 39, and the other end of which forms a clamping space for clamping the workpiece 6 with the workpiece positioning transfer block 33;
during operation, as shown in fig. 3a, the power output shaft of the workpiece positioning cylinder 38 drives the rotating arm 39 to rotate, and the workpiece positioning rotating arm 39 drives the workpiece clamping arm 35 to swing, so that the other end of the workpiece clamping arm 35 moves close to the workpiece positioning transfer block 33 to clamp the workpiece 6, or, as shown in fig. 3b, the other end of the workpiece clamping arm 35 moves away from the workpiece positioning transfer block 33, and the workpiece clamping arm 35 is opened (i.e., in a state shown by a dotted line) to release the workpiece 6.
Further, as shown in fig. 4, the weld positioning and clamping assembly 4 includes: a weld positioning support 43 detachably connected to the tooling bottom plate 1 by bolts or the like; a weld positioning transfer block 44 connected to the weld positioning support 43; a weld positioning cylinder 46 detachably mounted on the weld positioning support 43; a weld positioning rotating arm 45 connected with a power output shaft of the weld positioning cylinder 46; a weld clamping arm 47, one end of which is connected with the weld positioning rotating arm 45; an upper weld clamping block 41 connected to the other end of the weld clamping arm 47; a lower weld clamping block 42 connected to the upper end surface of the weld positioning support 43 and corresponding to the upper weld clamping block 41, wherein a clamping space for clamping and fixing a weld is formed between the upper weld clamping block 41 and the lower weld clamping block 42;
when the power output shaft of the welding seam positioning cylinder 46 drives the welding seam positioning rotating arm 45 to rotate, the upper welding seam clamping block 41 and the lower welding seam clamping block 42 are in contact with the surface of a workpiece at a welding seam, so that the welding seam is clamped; meanwhile, the joint of the upper weld clamping block 41 and the weld clamping arm 47 and/or the joint of the lower weld clamping block 42 and the weld positioning support 43 are/is provided with adjusting gaskets, so that the assembling precision between components can be adjusted through the adjusting gaskets, and the machining and assembling errors are reduced.
The specific working process of the welding seam positioning and clamping assembly 4 is similar to that of the positioning and clamping assembly 3, and during working, the power output shaft of the welding seam positioning cylinder 46 drives the welding seam positioning rotating arm 45 to rotate, and the welding seam positioning rotating arm 45 drives the welding seam clamping arm 47 to swing, so that the upper welding seam clamping block 41 moves close to the lower welding seam clamping block 42 to clamp the welding seam, or the upper welding seam clamping block 41 moves away from the lower welding seam clamping block 42 to release the welding seam after welding is completed.
Taking welding between a white vehicle body door inner plate and a door frame reinforcing plate as an example, before clamping, a tooling bottom plate 1 is fixed on a rack or a rotating table to ensure smooth installation, and then the positioning pin assembly 2, the positioning clamping assembly 3 and the welding seam positioning clamping assembly 4 are installed on the tooling bottom plate 1. Conveying a workpiece 6 to be welded onto a welding tool, ensuring that a positioning pin 21 of the positioning pin assembly 2 passes through a positioning hole 5 on the workpiece 6, and positioning and clamping the surfaces of the workpiece 6 and the positioning and clamping assembly 3; at the moment, the welding seam positioning and clamping assembly 4 also corresponds to the position of the welding seam, the upper welding seam clamping block 41 and the lower welding seam clamping block 42 press the welding seam up and down, and laser is emitted to weld the welding seam; after welding, the upper weld seam clamping block 41 and the lower weld seam clamping block 42 are opened, and then the positioning and clamping assembly 3 is opened, so that the well-welded workpiece 6 can be taken away. The structure can well control the gap at the welding seam through fixing the position of the welding seam, and ensure that the laser beam only works at the welding position, thereby meeting the requirements of the laser self-fluxing welding process and quality.
Example 2:
this embodiment differs from embodiment 1 only in that, as shown in fig. 3a to 3b, the positioning and clamping assembly 3 further includes:
a first clamp positioning block 31 connected to a lower surface of the other end of the workpiece clamping arm 35;
the second clamping and positioning block 32 is connected with the upper surface of the workpiece positioning adapter plate 33, corresponds to the first clamping and positioning block 31 in position, and forms a clamping space for clamping the workpiece 6 between the first clamping and positioning block 31 and the second clamping and positioning block 32; when the power output shaft of the clamping cylinder 38 drives the rotating arm 39 to rotate, the first clamping and positioning block 31 and the second clamping and positioning block 32 are in contact with the surface of the workpiece 6 to clamp the workpiece 6; meanwhile, an adjusting gasket is arranged at the joint of the first clamping and positioning block 31 and the workpiece clamping arm 35 and/or the joint of the second clamping and positioning block 32 and the adapter plate 33, so that the assembling precision between the components can be adjusted through the adjusting gasket, and the machining and assembling errors can be reduced;
an upper workpiece positioning stopper 36 connected to the lower end surface of the workpiece clamping arm 35;
in this embodiment, the upper workpiece positioning limiting block 36 and the lower workpiece positioning limiting block 37 are matched to ensure that the swing amplitude of the workpiece clamping arm 35 during each swing is consistent, and thus, the upper workpiece positioning limiting block 36 and the lower workpiece positioning limiting block 37 can be ensured to be in a mortise and tenon structure, so that the swing amplitude of the workpiece clamping arm 35 during each swing can be ensured to be consistent only by ensuring that the upper workpiece positioning limiting block 36 and the lower workpiece positioning limiting block 37 can be matched in place during each swing of the workpiece clamping arm 35, and the assembly precision is improved.
As shown in fig. 4, the weld positioning and clamping assembly 4 further includes:
an upper weld positioning stopper 48 connected to the lower end surface of the weld clamping arm 47;
in this embodiment, similar to the upper workpiece positioning limiting block 36 and the lower workpiece positioning limiting block 37, the upper welding seam positioning limiting block 48 and the lower welding seam positioning limiting block 49 can be matched to ensure that the swing amplitude of the welding seam clamping arm 47 is consistent when the welding seam clamping arm swings each time, so as to improve the assembly precision.
Example 3:
the embodiment is different from embodiment 1 or 2 only in that, as shown in fig. 5a to 5b, in the weld positioning and clamping assembly 4, the upper weld clamping block 41 is provided with an accommodating cavity 411 for accommodating the weld and penetrating up and down, and an aperture of an upper opening 4111 of the accommodating cavity 411 is larger than an aperture of a lower opening 4112, and the whole is of a horn-shaped structure with an inclined outer peripheral surface relative to a horizontal plane, preferably, an included angle α formed by the outer peripheral surface of the accommodating cavity 411 and the horizontal plane satisfies a condition: alpha is more than or equal to 60 degrees and less than or equal to 85 degrees (preferably, alpha is 75 degrees), therefore, even if the laser acts on the welding seam, a certain deflection angle exists, because the aperture of the opening 4111 at the upper part of the accommodating cavity 411 is relatively large, the upper space is wide, the laser cannot be shielded by the upper part of the upper welding seam clamping block 41, and the laser can still irradiate the welding seam at the bottom of the accommodating cavity 411 to complete the welding.
Further, as shown in fig. 5c, the length a of the weld is 20-30mm, the width b of the weld is 1-3mm, and the distance c between the upper edge of the weld and the upper edge of the lower opening 4112 of the accommodating chamber 411 satisfies the condition: c is more than or equal to 2mm and less than or equal to 10mm, and the distance d between the lower edge of the welding seam and the lower edge of the opening 4112 at the lower part of the containing cavity 411 meets the condition that: d is not less than 2mm and not more than 10mm, and the distance f between the left edge of the welding line and the left edge of the opening 4112 at the lower part of the containing cavity 411 meets the condition: f is not less than 2mm and not more than 10mm, and the distance e between the right edge of the welding seam and the right edge of the opening 4112 at the lower part of the containing cavity 411 meets the condition that: e is more than or equal to 2mm and less than or equal to 10mm.
Through the above parameter setting, can guarantee that the welding seam is in the middle part position that holds the chamber 411 of upper portion welding seam grip block 41, provide the reference standard for the laser beam location simultaneously, make laser beam can be correct, normally use to the welding seam department and accomplish the welding when guaranteeing to press from both sides tight welding seam, and guarantee welding quality.
Example 4:
the present embodiment differs from embodiment 1 only in that, in the bead alignment jig assembly 4, as shown in fig. 6a to 6b, the upper bead clamping block 41 in the bead alignment jig assembly 4 is formed as a U-shaped cutout portion 412 penetrating up and down for accommodating the bead.
Further, in this embodiment, the length a1 of the weld is 20-30mm, the width b1 of the weld is 1-3mm, and the distance c1 between the upper edge of the weld and the upper edge of the U-shaped notch 412 satisfies the following condition: c1 is more than or equal to 2mm and less than or equal to 10mm, and the distance e1 between the left edge of the welding seam and the left edge of the U-shaped notch part 412 meets the condition: e1 is more than or equal to 2mm and less than or equal to 10mm, and the distance d1 between the right edge of the welding seam and the right edge of the U-shaped notch part 412 meets the condition: d1 is more than or equal to 2mm and less than or equal to 10mm.
In this embodiment, if the design of the closed accommodating cavity 411 in embodiment 3 is adopted, when the lower edge of the welding seam is closer to the lower edge of the accommodating cavity 411, the laser is likely to act on the lower edge of the accommodating cavity 411, the accurate welding at the welding seam cannot be completed, and the upper welding seam clamping block 41 is easily damaged, so that the embodiment improves the problem, that is, the closed accommodating cavity 411 is improved to be designed with the U-shaped notch part 412 with the lower edge being open, and therefore, when the lower edge of the welding seam is smaller than the lower opening distance of the U-shaped notch part 412, the laser beam can be irradiated onto the welding seam unhindered and accurately without damaging the upper welding seam clamping block 41.
In conclusion, the laser welding tool can prevent the welding seam from moving by fixing the position of the welding seam, so that the gap at the welding seam is controlled, and the laser beam is ensured to operate only at the welding position, so that the requirements of the laser self-fluxing welding process and quality are met; meanwhile, the upper welding seam clamping blocks in different forms are designed according to different conditions, so that the laser can be prevented from being shielded by the upper welding seam clamping blocks, the welding can be accurately irradiated to the welding seam to complete welding, and the upper welding seam clamping blocks cannot be damaged.
It should be noted that the technical features of the above embodiments 1 to 4 can be arbitrarily combined, and the technical solutions obtained by combining the technical features belong to the scope of the present invention.
The embodiments of the present invention are not limited to the above-described examples, and various changes and modifications in form and detail may be made by those skilled in the art without departing from the spirit and scope of the present invention, and these are considered to fall within the scope of the present invention.
Claims (10)
1. The utility model provides a laser welding frock which characterized in that includes: the positioning and clamping device comprises a tooling bottom plate, a positioning pin assembly, a positioning and clamping assembly and a welding seam positioning and clamping assembly; the positioning pin assembly, the positioning and clamping assembly and the welding seam positioning and clamping assembly are connected with the tool bottom plate;
the positioning pin assembly is used for being matched with a positioning hole in a workpiece, the positioning and clamping assembly is used for clamping the surface of the workpiece, and the workpiece is clamped and fixed through the positioning pin assembly and the positioning and clamping assembly; the welding seam positioning and clamping assembly is used for fixing the welding seam of the workpiece;
the weld positioning and clamping assembly comprises: the welding seam positioning support is connected with the tool bottom plate; the welding seam positioning transfer block is connected with the welding seam positioning support; the welding seam positioning cylinder is arranged on the welding seam positioning support; the welding seam positioning rotating arm is connected with a power output shaft of the welding seam positioning cylinder; one end of the welding seam clamping arm is connected with the welding seam positioning rotating arm; an upper weld clamping block connected to the other end of the weld clamping arm; the lower welding seam clamping block is connected with the upper end surface of the welding seam positioning support and corresponds to the upper welding seam clamping block in position, and a clamping space for clamping and fixing a welding seam is formed between the upper welding seam clamping block and the lower welding seam clamping block;
the upper weld clamping block is provided with a U-shaped notch part which is used for accommodating the weld and is penetrated up and down.
2. The laser welding tool of claim 1, wherein the positioning and clamping assembly comprises: the workpiece positioning support is connected with the tool bottom plate; the workpiece positioning transfer block is connected with the workpiece positioning support; the workpiece positioning cylinder is arranged on the workpiece positioning support; the workpiece positioning rotating arm is connected with a power output shaft of the workpiece positioning air cylinder; and one end of the workpiece clamping arm is connected with the workpiece positioning rotating arm, and a clamping space for clamping the workpiece is formed between the other end of the workpiece clamping arm and the workpiece positioning switching block.
3. The laser welding tool of claim 2, wherein the positioning and clamping assembly further comprises:
the first clamping positioning block is connected with the lower surface of the other end of the workpiece clamping arm;
and the second clamping positioning block is connected with the upper surface of the workpiece positioning transfer block and corresponds to the first clamping positioning block in position, and a clamping space for clamping a workpiece is formed between the first clamping positioning block and the second clamping positioning block.
4. The laser welding tool of claim 2, wherein the positioning and clamping assembly further comprises: the upper workpiece positioning limiting block is connected with the lower end face of the workpiece clamping arm;
and the lower part workpiece positioning limiting block is connected to the workpiece positioning switching block and corresponds to the upper part workpiece positioning limiting block in position, and the upper part workpiece positioning limiting block and the lower part workpiece positioning limiting block are matched with each other.
5. The laser welding tool according to claim 1, wherein the upper welding seam clamping block is provided with an accommodating cavity which is used for accommodating the welding seam and is through up and down, and the accommodating cavity is integrally of a horn-shaped structure.
6. The laser welding tool according to claim 5, wherein an included angle α formed by the outer peripheral surface of the accommodating cavity and a horizontal plane satisfies a condition: alpha is more than or equal to 60 degrees and less than or equal to 85 degrees.
7. The laser welding tool according to claim 5, wherein the length a of the welding seam is 20-30mm, the width b of the welding seam is 1-3mm, and the distance c between the upper edge of the welding seam and the upper edge of the lower opening (4112) of the accommodating cavity (411) meets the following condition: c is more than or equal to 2mm and less than or equal to 10mm, and the distance d between the lower edge of the welding seam and the lower edge of the lower opening (4112) of the containing cavity (411) meets the condition that: d is more than or equal to 2mm and less than or equal to 10mm, and the distance f between the left edge of the welding line and the left edge of the lower opening (4112) of the accommodating cavity (411) meets the condition that: f is more than or equal to 2mm and less than or equal to 10mm, and the distance e between the right edge of the welding seam and the right edge of the lower opening (4112) of the containing cavity (411) meets the condition that: e is more than or equal to 2mm and less than or equal to 10mm.
8. The laser welding tool according to claim 1, wherein the length a1 of the welding line is 20-30mm, the width b1 of the welding line is 1-3mm, and the distance c1 between the upper edge of the welding line and the upper edge of the U-shaped notch part meets the following condition: c1 is more than or equal to 2mm and less than or equal to 10mm, and the distance e1 between the left edge of the welding seam and the left edge of the U-shaped notch part meets the condition: e1 is more than or equal to 2mm and less than or equal to 10mm, and the distance d1 between the right edge of the welding seam and the right edge of the U-shaped notch part meets the condition that: d1 is more than or equal to 2mm and less than or equal to 10mm.
9. The laser welding tool of any one of claims 1-8, wherein the weld positioning and clamping assembly further comprises:
the upper welding seam positioning limiting block is connected with the lower end face of the welding seam clamping arm;
and the lower welding seam positioning limiting block is connected to the welding seam positioning transfer block, corresponds to the upper welding seam positioning limiting block in position, and is matched with the upper welding seam positioning limiting block.
10. The laser welding tool according to claim 1, wherein the workpiece comprises one or more of a body-in-white vehicle door inner plate, a door frame reinforcing plate, a side wall and a tail door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115229408B (en) * | 2022-07-01 | 2023-06-13 | 广州明珞装备股份有限公司 | Clamp for laser welding, laser welding workstation and method |
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| CN102430886B (en) * | 2011-10-27 | 2014-09-17 | 山西晋煤集团金鼎煤机矿业有限责任公司 | Shifting device of double-side assembling and clamping workpiece for automatic welding of hydraulic support |
| CN205684941U (en) * | 2016-06-07 | 2016-11-16 | 广东华创智能装备有限公司 | Full-automatic welding displacement all-in-one |
| CN105945391B (en) * | 2016-07-11 | 2018-05-18 | 山东厚丰汽车散热器有限公司 | The double vertical masonry joint automatic welders of radiator and the double vertical masonry joint automatic soldering methods of radiator |
| CN208680820U (en) * | 2017-12-31 | 2019-04-02 | 浙江拓为汽车部件有限公司 | One kind being suitable for the welding of two sequence of torsion beam and inverts total forming apparatus greatly |
| CN208680831U (en) * | 2018-09-14 | 2019-04-02 | 洛阳兴达重工设备有限公司 | A kind of machining tank tower automatic turning welder |
| CN211219088U (en) * | 2019-08-03 | 2020-08-11 | 浙江治丞智能机械科技有限公司 | Robot automatic weld workstation based on machine of shifting is assisted |
| CN110560898B (en) * | 2019-09-12 | 2024-09-06 | 华工法利莱切焊系统工程有限公司 | White automobile body lamp plate laser flying welding frock |
| CN111318986B (en) * | 2020-04-03 | 2021-07-27 | 华工法利莱切焊系统工程有限公司 | Trial-manufacturing equipment for ceiling laser welding line body |
| CN112318048A (en) * | 2020-10-29 | 2021-02-05 | 季学良 | Displacement mechanism for automobile exhaust pipe welding production line |
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