CN214161767U

CN214161767U - Laser welding structure

Info

Publication number: CN214161767U
Application number: CN202023081786.4U
Authority: CN
Inventors: 戴家文
Original assignee: Suzhou Toflylaser Technology Co ltd
Current assignee: Suzhou Toflylaser Technology Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-09-10
Anticipated expiration: 2030-12-18

Abstract

The utility model discloses a laser welding structure, which comprises a laser welding gun, a first workpiece and a second workpiece which need butt welding; a bulge with the same length as the extending direction of the welding seam is integrally formed on the first workpiece close to the edge of the welding seam; the laser welding gun is fixed above the first workpiece through a supporting structure; the welding tip of the laser welding gun obliquely protrudes from the side of the protrusion far away from the welding seam; the first workpiece and the second workpiece are fixed on the power mechanism through the limiting assembly; the power mechanism can drive the welding line to move at a constant speed relative to the laser welding gun; the arrangement of the bulge ensures that the whole welding structure can realize welding without a wire feeding mechanism, and in the welding process, the gas protection device of the laser welding gun can realize gas protection on the laser welding gun; the wire feeding mechanism can be removed from wire feeding through the integrally formed bulges, the structure is ingenious, and the cost is low.

Description

Laser welding structure

Technical Field

The utility model relates to a welded technical field especially relates to a laser welding structure.

Background

Laser welding is an efficient precision welding method using a laser beam with high energy density as a heat source. The laser welding does not need a vacuum chamber, does not need demagnetization, has high welding speed and small deformation after welding, and is widely applied to various industries.

Wire feeding is a very important link in the welding process, and the welding quality is directly influenced; the existing welding basically uses a wire feeder, the cost is increased by adopting the wire feeder to carry out laser welding, and the precision of the wire feeder determines the welding quality.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves is: the laser welding structure can guarantee welding quality and does not need to be added with wire feeding equipment.

In order to solve the main technical problems, the following technical scheme is adopted:

a laser welding structure comprises a laser welding gun, a first workpiece and a second workpiece which need butt welding; a bulge with the same length as the extending direction of the welding seam is integrally formed on the first workpiece close to the edge of the welding seam; the laser welding gun is fixed above the first workpiece through a supporting structure; the welding tip of the laser welding gun obliquely protrudes from the side of the protrusion far away from the welding seam; the first workpiece and the second workpiece are fixed on the power mechanism through the limiting assembly; the power mechanism can drive the welding line to move at a constant speed relative to the laser welding gun.

Preferably, the longitudinal section of the protrusion is a right triangle, and the projection of the vertical straight side of the right triangle on the surface of the first workpiece is overlapped with the edge of the first workpiece close to the welding seam.

Preferably, the support structure comprises longitudinal beams, cross beams, screw rods and a mounting frame; the cross beam is fixed at the top of the longitudinal beam; the beam is positioned right above the first workpiece and the second workpiece; the screw rod is fixed on one side of the cross beam through a bearing seat and the like; the mounting rack is fixed on a nut of the screw rod; the laser welding gun is fixed on the mounting frame through the lifting assembly.

Preferably, the lifting assembly comprises a fixing plate and a bolt; the laser welding gun is fixed on the fixing plate; the fixing plate is fixed at the bottom of the bolt; the mounting frame is provided with a threaded hole matched with the bolt for use; and the top of the bolt is fixed with a limiting wheel for preventing the bolt from falling.

Preferably, the bottom of the longitudinal beam is provided with a support seat extending below the first workpiece and the second workpiece.

Preferably, the weld formed by the first and second workpieces is annular; the first workpiece is ring-shaped; the second workpiece is disc-shaped or ring-shaped; the power mechanism is a rotating mechanism; the rotating mechanism comprises a turntable; the first workpiece is positioned outside the second workpiece and is concentric with the second workpiece; the limiting assembly comprises a clamping jaw and a first air cylinder; the clamping jaws are fixed on the rotary table and can simultaneously clamp the peripheral surface of the first workpiece; the bottom of the piston rod of the first air cylinder presses the solid surface of the second workpiece, and the cylinder body is rotationally connected to the bracket below the screw rod through the connecting arm; the top of the connecting arm is vertical and is fixed on the bracket through a connecting arm bearing, and the lower part of the connecting arm is inclined and fixed on the surface of the first cylinder body; and the axis of the connecting arm bearing and the axis of the rotary table are overlapped after being vertically translated.

Preferably, the weld formed by the first and second workpieces is a straight line; the power mechanism is a linear module; a fixed table is arranged on the surface of the sliding part of the linear module; the limiting assembly comprises two groups of second air cylinders fixed on the fixed table; the telescopic direction of the piston of the second cylinder is consistent with the welding line; each group of second cylinders comprises at least one pair of oppositely arranged second cylinders; one group of the second cylinders is positioned on two opposite sides of the first workpiece, and the other group of the second cylinders is positioned on two opposite sides of the second workpiece.

Compared with the prior art, the utility model discloses be applied to the butt welding of two work pieces and possess following advantage:

(1) the arrangement of the bulge ensures that the whole welding structure can realize welding without a wire feeding mechanism, and in the welding process, the gas protection device of the laser welding gun can realize gas protection on the laser welding gun; the wire feeding mechanism can be removed from wire feeding through the integrally formed bulges, the structure is ingenious, and the cost is low. The power mechanism and the limiting assembly are different according to different shapes of welding seams, and the power mechanism can drive the first workpiece and the second workpiece to move at a constant speed relative to the laser welding gun no matter the welding seams are linear welding seams or annular welding seams, so that the welding quality is ensured; no matter be the welding of straight line welding seam or annular weld, spacing subassembly and bearing structure set up the welding that can be suitable for not unidimensional first work piece and second work piece, and the suitability is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some examples of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention when the welding seam is annular;

fig. 2 is a schematic top view of a turntable according to an embodiment of the present invention;

fig. 3 is a schematic view of the overall structure of the embodiment of the present invention when the welding seam is a straight line;

fig. 4 is a schematic top view of a fixing table according to an embodiment of the present invention.

In the figure: 1 is a laser welding gun, 2 is a first workpiece, 21 is a bulge, and 3 is a second workpiece;

4, a rotating mechanism, 41, a rotating table, 42, a clamping jaw, 43, a first air cylinder, 44, a connecting arm, 45, a connecting arm bearing and 46, wherein the rotating mechanism is a rotating table;

5 is a linear module, 51 is a fixed table, and 52 is a second air cylinder;

6 is bearing structure, 61 is the longeron, 62 is the crossbeam, 63 is the lead screw, 64 is the mounting bracket, 65 is the fixed plate, 66 is the bolt, 67 is the spacing wheel, 68 is the supporting seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

Referring to fig. 1-4, a laser welding structure includes a laser welding gun 1, a first workpiece 2 and a second workpiece 3 to be butt-welded; a bulge 21 with the same length as the extending direction of the welding seam is integrally formed on the first workpiece 2 close to the edge of the welding seam; the laser welding gun 1 is set according to the prior art; the length, shape and the like of the bulge 21 and the welding seam are completely consistent; the laser welding gun 1 is fixed above the first workpiece 2 through a supporting structure 6; the welding tip of the laser welding gun 1 is obliquely opposite to the bulge 21 from the side, far away from the welding seam, of the bulge 21; the supporting structure 6 comprises longitudinal beams 61, a cross beam 62, a screw 63 and a mounting frame 64; the cross beam 62 is fixed on the top of the longitudinal beam 61; a cross beam 62 and a longitudinal beam 61 form a right-angle structure; the cross beam 62 is positioned right above the first workpiece 2 and the second workpiece 3; the screw 63 is fixed on one side of the cross beam 62 through a bearing seat and the like, the screw 63 rotates under the driving of the power of the screw 63, and the power driving of the screw 63 is not shown in the figure; the mounting frame 64 is fixed on the nut of the screw rod 63; the laser welding gun 1 is fixed on the mounting frame 64 through a lifting assembly; after the screw 63 is arranged, the distance between the laser welding gun 1 and the longitudinal beam 61 can be adjusted, so that the applicability can be improved when the distances between the welding seam and the longitudinal beam 61 are different; the lifting assembly comprises a fixing plate 65 and a bolt 66; the mounting bracket 64 is provided with a threaded hole matched with the bolt 66; the bolt 66 passes through the bolt 66 hole, and the bottom of the bolt is fixed with a fixing plate 65; the laser welding gun 1 is fixed on the fixing plate 65, the top of the bolt 66 is fixed with a limiting wheel 67 for preventing the bolt 66 from falling off, and the limiting wheel 67 drives the fixing plate 65 to lift through manual rotation, so that the distance from a nozzle at the bottom of the laser welding gun to the bulge 21 can be conveniently adjusted; a support base 68 extending below the first workpiece 2 and the second workpiece 3 is provided at the bottom of the side member 61 to maintain balance.

The first workpiece 2 and the second workpiece 3 are fixed on the power mechanism through a limiting component; the power mechanism can drive the welding seam to move at a constant speed relative to the laser welding gun 1, the workpiece moves, and the laser welding gun 1 is fixed to complete welding; the longitudinal section of the protrusion 21 is a right-angled triangle, the projection of the vertical straight edge of the right-angled triangle on the surface of the first workpiece 2 is overlapped with the edge of the first workpiece 2 close to the welding seam, the welding can be realized without a wire feeding mechanism due to the arrangement of the protrusion 21, in the welding process, the gas protection device of the laser welding gun 1 can realize gas protection on the laser welding gun 1, and in addition, after the protrusion 21 is melted, the gas flows to the welding seam under the action of the fluid and the driving action of the gas, so that the welding is finished; the wire feeding mechanism can be omitted for wire feeding through the integrally formed bulge 21, the structure is ingenious, and the cost is low.

The utility model discloses a welded structure mainly is suitable for two kinds of welding seams, and the first kind is: the weld formed by the first workpiece 2 and the second workpiece 3 is annular; the first workpiece 2 is ring-shaped; the second workpiece 3 is disc-shaped or ring-shaped; the power mechanism is a rotating mechanism 4; the rotating mechanism 4 comprises a rotary table 41, and the rotary table 41 can rotate under the drive of the power of the rotary table 41; the laser welding gun 1 is positioned right above the first workpiece 2, and a welding tip of the laser welding gun 1 is obliquely opposite to a certain position of the bulge 21; the first workpiece 2 is positioned outside the second workpiece 3 and is concentric with the second workpiece, and the first workpiece 2 is concentric with the rotary table 41; the limiting assembly is a clamping jaw 42 and a first air cylinder 43; a plurality of the holding jaws 42 fixed to the turn table 41 and capable of simultaneously holding the peripheral surface of the first workpiece 2; the jaws 42 are configured according to the prior art; the bottom of the piston rod of the first cylinder 43 is pressed on the solid surface of the second workpiece 3, that is, if the second workpiece 3 is disc-shaped, the first cylinder 43 can be pressed on any position of the second workpiece 3, and when the second workpiece 3 is ring-shaped, the bottom of the piston rod of the first cylinder 43 is pressed on the solid surface of the second workpiece 3; the cylinder body is rotationally connected to a bracket 46 positioned below the screw rod 63 through a connecting arm 44; the top of the connecting arm 44 is vertical and fixed on the bracket 46 through a connecting arm bearing 45, and the lower part of the connecting arm 44 is inclined and fixed on the surface of the cylinder body of the first cylinder 43; the axis of the connecting arm bearing 45 and the axis of the rotary table 41 are overlapped after being translated up and down; the position of the bracket 46 is fixed, the connecting arm bearing 45 is fixed on the bracket 46 through a bearing seat, the first cylinder 43 can ensure that the first cylinder 43 and the rotary table 41 are always in a relative static state under the action of the connecting arm bearing 45, so that the end part of a piston rod of the cylinder and the second workpiece 3 are prevented from sliding relatively, the second workpiece 3 can be ensured to be always kept in relative static state with the rotary table 41, and the position of the bracket 46 is based on the condition that the normal work of each component of the laser spray gun is not hindered; revolving stage 41 drives first work piece 2, second work piece 3, the relative laser welder 1 of first cylinder 43 and rotates at the uniform velocity, and at the rotation in-process, laser welder 1 melts protruding 21 and flows to the molten bath in, through the setting of clamping jaw 42 and first cylinder 43, can ensure that the welding does not receive the size influence of first work piece 2 and second work piece 3, thereby improves the utility model discloses to the suitability of cyclic annular welding seam.

The second type of weld is: the weld formed by the first workpiece 2 and the second workpiece 3 is a straight line; the power mechanism is a linear module 5; the linear module 5 may be a slide table or the like; a fixed table 51 is arranged on the surface of the sliding part of the linear module 5; the limiting assembly comprises two groups of second air cylinders 52 fixed on a fixed table 51; the telescopic direction of the piston of the second cylinder 52 is consistent with the welding seam; each set of second cylinders 52 includes at least one pair of oppositely disposed second cylinders 52; one set of the second air cylinders 52 is located on opposite sides of the first workpiece 2, and the other set of the second air cylinders 52 is located on opposite sides of the second workpiece 3; the second cylinder 52 is simple, and can ensure that the first workpiece 2 and the second workpiece 3 are static relative to the power mechanism, and the protrusions 21 obliquely opposite to the laser welding gun 1 move linearly at a constant speed relative to the welding tip under the action of the linear module 5, so that the welding quality is ensured.

The utility model discloses a working process does: fixing the first workpiece 2 and the second workpiece 3 on the surface of the power mechanism by using a limiting component; starting a power motor of the screw rod 63, and driving the screw rod 63 to rotate so that a welding tip of the laser welding gun 1 is obliquely aligned to a certain welding point of the bulge 21 from the side of the bulge 21, which is far away from the welding line; manually rotating the limiting wheel 67 in a forward direction or a reverse direction, and adjusting the vertical distance from the welding nozzle of the laser welding gun 1 to the welding seam; and starting a power mechanism, and simultaneously starting the welding and gas protection of the laser welding gun 1, wherein the power mechanism drives the first workpiece 2 and the second workpiece 3 to move at a constant speed relative to the laser welding gun 1, so that the welding is completed.

Two kinds of forms of welding seam shape are different in this specification to the power unit and the spacing subassembly that use are also different, but two kinds of welding seams are all uniform motion for welder relatively, realize the welded, and laser welder 1's welding mode is the same promptly, the utility model discloses a similar part looks into each other can.

It should be noted that, in the present invention, "upper, lower, left, right, inner and outer" are defined based on the relative position of the components in the drawings, and are only for the clarity and convenience of describing the technical solution, it should be understood that the application of the directional terms does not limit the protection scope of the present application.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or some of the technical features may be substituted by equivalent substitutions, modifications and the like, all of which are within the spirit and principle of the present invention.

Claims

1. A laser welding structure characterized in that: the welding device comprises a laser welding gun, a first workpiece and a second workpiece which need butt welding; a bulge with the same length as the extending direction of the welding seam is integrally formed on the first workpiece close to the edge of the welding seam; the laser welding gun is fixed above the first workpiece through a supporting structure; the welding tip of the laser welding gun obliquely protrudes from the side of the protrusion far away from the welding seam; the first workpiece and the second workpiece are fixed on the power mechanism through the limiting assembly; the power mechanism can drive the welding line to move at a constant speed relative to the laser welding gun.

2. A laser welded structure according to claim 1, wherein: the vertical section of the protrusion is a right triangle, and the projection of the vertical straight edge of the right triangle on the surface of the first workpiece is overlapped with the edge of the first workpiece close to the welding seam.

3. A laser welded structure according to claim 1, wherein: the supporting structure comprises longitudinal beams, cross beams, screw rods and a mounting frame; the cross beam is fixed at the top of the longitudinal beam; the beam is positioned right above the first workpiece and the second workpiece; the screw rod is fixed on one side of the cross beam through a bearing seat and the like; the mounting rack is fixed on a nut of the screw rod; the laser welding gun is fixed on the mounting frame through the lifting assembly.

4. A laser welded structure according to claim 3, wherein: the lifting assembly comprises a fixing plate and a bolt; the laser welding gun is fixed on the fixing plate; the fixing plate is fixed at the bottom of the bolt; the mounting frame is provided with a threaded hole matched with the bolt for use; and the top of the bolt is fixed with a limiting wheel for preventing the bolt from falling.

5. A laser welded structure according to claim 3, wherein: and a support seat extending to the lower parts of the first workpiece and the second workpiece is arranged at the bottom of the longitudinal beam.

6. A laser welded structure according to claim 1, wherein: the weld formed by the first workpiece and the second workpiece is annular; the first workpiece is ring-shaped; the second workpiece is disc-shaped or ring-shaped; the power mechanism is a rotating mechanism; the rotating mechanism comprises a turntable; the first workpiece is positioned outside the second workpiece and is concentric with the second workpiece; the limiting assembly comprises a clamping jaw and a first air cylinder; the clamping jaws are fixed on the rotary table and can simultaneously clamp the peripheral surface of the first workpiece; the bottom of the piston rod of the first air cylinder presses the solid surface of the second workpiece, and the cylinder body is rotationally connected to the bracket below the screw rod through the connecting arm; the top of the connecting arm is vertical and is fixed on the bracket through a connecting arm bearing, and the lower part of the connecting arm is inclined and fixed on the surface of the first cylinder body; and the axis of the connecting arm bearing and the axis of the rotary table are overlapped after being vertically translated.

7. A laser welded structure according to claim 1, wherein: the weld formed by the first workpiece and the second workpiece is a straight line; the power mechanism is a linear module; a fixed table is arranged on the surface of the sliding part of the linear module; the limiting assembly comprises two groups of second air cylinders fixed on the fixed table; the telescopic direction of the piston of the second cylinder is consistent with the welding line; each group of second cylinders comprises at least one pair of oppositely arranged second cylinders; one group of the second cylinders is positioned on two opposite sides of the first workpiece, and the other group of the second cylinders is positioned on two opposite sides of the second workpiece.