CN111730201A - Laser welding device - Google Patents

Abstract

The invention discloses a laser welding device, which comprises a suction mechanism and a laser generating mechanism, wherein the laser generating mechanism comprises: a laser mounting base; the laser mounting base plate is connected with the laser mounting base in a sliding manner; a laser generator mounted on the laser mounting base plate; the lifting driver is arranged on the laser mounting base and is in transmission connection with the laser mounting base plate; the laser generator comprises a steering driver arranged on the laser mounting base plate and a laser source in transmission connection with the steering driver, the laser source enables the laser beam emitted by the laser source to be switched back and forth among at least four emergent angles under the driving of the steering driver, and the focal point of the laser beam is always located on the same horizontal plane in the switching process. According to the invention, the welding stations can be rapidly switched among a plurality of welding stations on the same operation plane, so that the aim of improving the welding efficiency is fulfilled.

Description

Laser welding device

Technical Field

The invention relates to the field of laser welding, in particular to a laser welding device.

Background

In the field of laser welding, it is known to use laser welding devices of different configurations for welding and joining workpieces. In the course of studying and implementing the welding combination, the inventor finds that the laser welding device in the prior art has at least the following problems:

the existing laser generator emits laser beams with an unadjustable emergence angle, or even if the laser beams can be adjusted, the focuses of the laser beams at various angles are difficult to focus on the same plane after adjustment, so that the existing laser welding device cannot rapidly switch among a plurality of welding stations on the same operation plane to achieve the purpose of improving the welding efficiency.

In view of the above, it is necessary to develop a laser welding apparatus to solve the above problems.

Disclosure of Invention

In view of the disadvantages in the prior art, a primary object of the present invention is to provide a laser welding apparatus, which drives a laser source to switch a laser beam emitted from the laser source back and forth between at least four emission angles, and keeps a focus of the laser beam on a same horizontal plane during the switching process, so as to perform a fast switching between a plurality of welding stations on a same operation plane, thereby achieving an object of improving welding efficiency.

To achieve the above objects and other advantages in accordance with the present invention, there is provided a laser welding apparatus including:

the suction mechanism is used for sucking and transferring the workpiece to be welded; and

the laser generating mechanism is arranged beside the suction mechanism;

wherein, the laser generating mechanism includes:

a laser mounting base;

the laser mounting base plate is connected with the laser mounting base in a sliding manner;

a laser generator mounted on the laser mounting base plate; and

the lifting driver is arranged on the laser mounting base and is in transmission connection with the laser mounting base plate;

the laser generator comprises a steering driver arranged on the laser mounting base plate and a laser source in transmission connection with the steering driver, the laser source enables the laser beam emitted by the laser source to be switched back and forth among at least four emergent angles under the driving of the steering driver, and the focal point of the laser beam is always located on the same horizontal plane in the switching process.

Optionally, the suction mechanism comprises:

a suction mounting base; and

the suction nozzle is arranged on the suction mounting seat;

wherein, absorb the mount pad and include:

a mounting vertical plate extending along the vertical direction;

the sliding mounting plate is connected with the side face of the mounting vertical plate in a sliding mode and can slide in a reciprocating mode relative to the mounting vertical plate along the vertical direction so as to switch between a natural state and a buffering state; and

with sliding mounting panel fixed mounting's suction nozzle mount pad, the side rigid coupling of suction nozzle mount pad has suction nozzle installation cantilever, suction nozzle installation cantilever is followed the level of starting from the side of suction nozzle mount pad extends outwards, suction nozzle detachably installs on suction nozzle installation cantilever.

Optionally, the suction mounting base further includes a mounting plate fixedly connected to the top of the mounting vertical plate, a horizontal outward-protruding buffer receiving table is integrally formed on a side surface of the sliding mounting plate, the mounting plate extends in the horizontal direction and at least partially extends above the buffer receiving table, an elastically-deformable buffer component is connected between the mounting plate and the buffer receiving table, and the buffer component acts on the buffer receiving table so that when the suction nozzle is subjected to a compressive force to disappear, the sliding mounting plate can slide downward along the vertical direction to reset from the buffer state to the natural state.

Optionally, the device further comprises a manipulator and a visual detection assembly mounted on the manipulator, and the suction mounting seat is mounted on the manipulator through the mounting flat plate.

Optionally, the side of sliding mounting panel is formed with the mounting groove of its inside sunken, the suction nozzle mount pad includes vertical section and horizontal segment, the horizontal segment with vertical section integrated type ground combines to abandons from this vertical section level outside extension, works as the suction nozzle mount pad is installed to when on the sliding mounting panel, vertical section and sliding mounting panel's main part laminating, the horizontal segment is received at least partially the inside of mounting groove.

Optionally, the suction nozzle comprises:

an installation section;

a depending section integrally joined to the mounting section at one of the ends of the mounting section and extending downwardly therefrom; and

an extension section mounted to a bottom of the depending section;

the periphery of the extension section at least partially protrudes out of the outer side of the suspension section to form an outer protruding part, a light transmission hole penetrating through the upper surface and the lower surface of the outer protruding part is formed in the outer protruding part, and the light transmission hole is opened on the outer side of the light transmission hole so as to divide the outer protruding part into a suction block and a pressing block.

Optionally, an installation positioning strip protruding from the side surface of the installation section is integrally formed on the installation section, the extending direction of the installation positioning strip is consistent with the length direction of the installation section, a suction nozzle installation slot is formed on the suction nozzle installation cantilever, and when the suction nozzle is installed on the suction nozzle installation cantilever, the installation positioning strip is at least partially received inside the suction nozzle installation slot.

Optionally, at least a portion of the side wall of the light-transmitting hole extends upward from the bottom to form a taper shape, so that the inner diameter of the light-transmitting hole is gradually expanded along the direction from bottom to top.

Optionally, the bottom of the suction block is provided with a suction hole, and the inside of the suction nozzle is provided with a suction gas path extending to the suction hole.

Optionally, the bottom of the suction block is provided with an elastic body covering the periphery of the suction hole, and the elastic body is provided with a suction port communicated with the suction hole.

One of the above technical solutions has the following advantages or beneficial effects: the laser source is driven to enable the laser beam emitted by the laser source to be switched back and forth among at least four emergent angles, and the focal points of the laser beam are kept on the same horizontal plane in the switching process, so that the welding stations on the same operation plane can be switched rapidly to achieve the purpose of improving the welding efficiency.

One of the above technical solutions has the following advantages or beneficial effects: because the related parts are fewer and the structure is compact, the installation space of the whole structure in the radial direction and the longitudinal direction is kept small enough, the accuracy of sucking the workpieces to be welded is improved, particularly the sucking success rate of small workpieces is improved, the whole weight is further reduced, and the stability of the sucked workpieces in the transfer process is improved.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the elastic deformable buffer component is connected between the mounting flat plate and the buffer bearing platform, when the suction nozzle sucks a workpiece to be welded, the buffer component can absorb impact force generated at the moment of contact between the suction nozzle and the workpiece to be welded, the workpiece (especially the workpiece made of brittle materials) is prevented from being damaged in the sucking process, meanwhile, the suction nozzle can be ensured to press the sucked workpiece onto a welding substrate for welding, the reset component can play a pre-pressing role on the workpiece through the elasticity of the reset component, and the workpiece (especially the workpiece made of brittle materials) is prevented from being damaged due to overlarge impact force in the pressing and positioning process.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because it does not need to reserve laser additionally on the side of suction nozzle on seting up the light trap and dodges the station, this one side makes the horizontal installation space of suction nozzle kept enough little, the laser beam can be penetrated into from the work piece directly over through the light trap, reduced because the laser beam energy dissipation that the laser light path leads to by the deliberate extension, welding efficiency and welding quality have been improved, on the other hand, the setting of light trap can reduce the interference influence that spare part caused to the laser light path, welding efficiency and welding quality have further been improved, finally, the setting of light trap can play certain barrier effect to the high temperature welding bits that welding in-process produced, prevent that the welding bits from splashing and causing the destruction to the work piece.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the internal diameter of light trap is the gradual expansion potential along from the orientation up down for when the laser beam penetrated from the top of light trap, further reduced the interference influence that the inner wall of light trap led to the fact the laser beam, be convenient for simultaneously operating personnel or visual detection system track, control in real time to the welding area on the work piece.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the suction nozzle is provided with the built-in suction gas circuit, and the suction gas circuit is arranged into three sections according to the extending path of the suction gas circuit, the problem that the traditional external gas circuit interferes with laser beams is avoided, and the problems that the traditional built-in gas circuit is difficult to process and high in production and manufacturing cost are also avoided.

Another technical scheme in the above technical scheme has the following advantages or beneficial effects: because the periphery of the suction hole is covered with the elastomer made of the thermoplastic elastic material, the contact friction force between the suction nozzle and the workpiece is improved, the preset suction area on the workpiece is conveniently and accurately sucked, the probability of vacuum breaking of the suction nozzle in the suction process is reduced, and the workpiece is prevented from being scratched by the suction nozzle in the suction process.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting thereof, wherein:

fig. 1 is a perspective view of a proposed laser welding apparatus according to an embodiment of the present invention;

fig. 2 is a perspective view of a suction mechanism in the proposed laser welding apparatus according to one embodiment of the present invention;

fig. 3 is a left side view of a suction mount in the laser welding apparatus according to an embodiment of the present invention;

fig. 4 is a perspective view of a suction mount in a laser welding apparatus according to an embodiment of the present invention;

fig. 5 is a perspective view of a suction mechanism in a laser welding apparatus according to an embodiment of the present invention, in cooperation with a laser beam;

fig. 6 is a left side view of a suction mechanism of a laser welding apparatus according to an embodiment of the present invention, with a nozzle mount hidden;

fig. 7 is a perspective view of a suction mechanism of a laser welding apparatus according to an embodiment of the present invention with a suction nozzle hidden;

fig. 8 is a left side view of a nozzle mount in the proposed laser welding apparatus according to an embodiment of the present invention;

fig. 9 is a perspective view of a suction nozzle of the laser welding apparatus according to an embodiment of the present invention, in which an outer protrusion is partially enlarged;

fig. 10 is a perspective view of a suction nozzle in the laser welding apparatus according to an embodiment of the present invention from another perspective, in which a bottom perspective structure of the suction nozzle can be seen;

the extension path of the suction air path inside the mouthpiece is shown in dotted lines in fig. 11;

fig. 12 is a left side view of a suction nozzle in the laser welding apparatus according to an embodiment of the present invention, in which an extended path of a suction air path inside the suction nozzle is shown in a dotted line;

fig. 13 is a front view of a suction nozzle in the proposed laser welding apparatus according to one embodiment of the present invention;

fig. 14 is a plan view of a suction nozzle in the proposed laser welding apparatus according to an embodiment of the present invention;

fig. 15 is a bottom view of a suction nozzle in the proposed laser welding apparatus according to one embodiment of the present invention.

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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.

Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

According to an embodiment of the present invention, as shown in fig. 1, it can be seen that the laser welding apparatus includes:

a suction mechanism 5 for sucking and transferring the work to be welded; and

the laser generating mechanism 4 is arranged beside the suction mechanism 5;

wherein the laser generating mechanism 4 includes:

a laser mount 41;

a laser mounting base plate 42 slidably connected to the laser mounting base 41;

a laser generator 44 mounted on the laser mounting base plate 42; and

a lifting driver 43 which is installed on the laser installation base 41 and is in transmission connection with the laser installation bottom plate 42;

the laser generator 44 includes a turning driver mounted on the laser mounting base plate 42 and a laser source in transmission connection with the turning driver, the laser source is driven by the turning driver to switch the laser beam 441 emitted by the laser source back and forth among at least four emission angles, and the focal point of the laser beam 441 is always located on the same horizontal plane during the switching process. In a specific implementation, the laser source is driven by the steering driver to switch the laser beam 441 emitted by the laser source back and forth between at least four emission angles, and meanwhile, the focal points of the laser beam 441 are uniformly arranged on the same circumference in the switching process.

With reference to the illustrations of fig. 2 to 8, it can be seen that the suction mechanism 5 for laser welding comprises:

a suction mount 53; and

a suction nozzle 100 mounted on the suction mount 53;

wherein the suction mount 53 includes:

a mounting upright 531 extending in the vertical direction;

a sliding mounting plate 532 slidably connected to a side surface of the mounting upright 531, wherein the sliding mounting plate 532 can slide back and forth relative to the mounting upright 531 along a vertical direction to switch between a natural state and a buffering state; and

the suction nozzle mounting base 533 is fixedly mounted on the sliding mounting plate 532, a suction nozzle mounting cantilever 5331 is fixedly connected to a side surface of the suction nozzle mounting base 533, the suction nozzle mounting cantilever 5331 extends outwards from a side surface of the suction nozzle mounting base 533, and the suction nozzles 100, 200 and 300 are detachably mounted on the suction nozzle mounting cantilever 5331. By adopting the structure with the characteristics, the number of related parts is small, the structure is compact, so that the installation space of the whole structure in the radial direction and the longitudinal direction is kept small enough, the accuracy of sucking the workpieces to be welded is improved, especially the sucking success rate of small workpieces is improved, the whole weight is further reduced, and the stability in the transfer process after the workpieces are sucked is improved.

Referring to fig. 3 and 4, the suction mount 53 further includes a mount plate 535 fixedly connected to the top of the mount vertical plate 531, a buffer receiving platform 5322 protruding horizontally and outwardly is integrally formed on a side surface of the slide mount plate 532, the mount plate 535 extends in the horizontal direction and at least partially extends above the buffer receiving platform 5322, an elastically deformable buffer member 534 is connected between the mount plate 535 and the buffer receiving platform 5322, and the buffer member 534 acts on the buffer receiving platform 5322 so that the slide mount plate 532 can slide downward in the vertical direction to return from the buffer state to the natural state after the suction nozzles 100, 200, 300 are subjected to the compressive force. With the structure of the above features, since the elastically deformable buffer member 534 is connected between the mounting plate 535 and the buffer receiving platform 5322, when the suction nozzle sucks the workpiece to be welded, the buffer member 534 can absorb the impact force generated at the moment when the suction nozzle contacts the workpiece to be welded, so as to prevent the workpiece (especially the workpiece made of brittle material) from being damaged during the sucking process, and meanwhile, the reset member 534 can perform a pre-pressing function on the workpiece by its own elastic force during the process of pressing the sucked workpiece onto the welding substrate for welding, so as to prevent the workpiece (especially the workpiece made of brittle material) from being damaged due to the overlarge impact force during the pressing and positioning process.

Referring again to fig. 2, further comprising a robot 51 and a vision inspection assembly 52 mounted on the robot 51, the suction mount 53 is mounted to the robot 51 through the mounting plate 535. The vision inspection assembly 52 can photograph the workpiece to be sucked before suction and transmit the position information of the workpiece to be sucked to the control system of the robot 51, and the control system controls the rotation and translation paths of the robot according to the position information to improve the positioning accuracy of the workpiece sucked by the suction nozzle 100.

Referring to fig. 6 to 8, the side surface of the sliding mounting plate 532 is formed with a mounting groove 5321 recessed toward the inside thereof, the nozzle mounting seat 533 includes a vertical section 5334 and a horizontal section 5333, the horizontal section 5333 is integrally combined with the vertical section 5334 without extending horizontally outward from the vertical section 5334, the vertical section 5334 is attached to the main body portion of the sliding mounting plate 532 when the nozzle mounting seat 533 is mounted to the sliding mounting plate 532, and the horizontal section 5333 is at least partially received inside the mounting groove 5321. With the above-described structure, the suction nozzle mount 533 and the slide mount plate 532 are connected without using any component other than a fastening screw, so that the mounting stability between the suction nozzle mount 533 and the slide mount plate 532 is improved, and the mounting space of the overall structure of the suction mechanism 5 in the radial direction and the longitudinal direction is kept sufficiently small.

Referring to fig. 9 to 11, it can be seen that the suction nozzle 100 includes:

a mounting section 110;

an overhanging section 120 integrally coupled to the mounting section 110 at one end of the mounting section 110 and extending downward from the mounting section 110; and

an extension section mounted to the bottom of the overhanging section 120;

wherein the outer circumference of the extension section at least partially protrudes outside the overhang section 120 to form an outer protrusion 130, a light transmission hole 133 penetrating through the upper and lower surfaces of the outer protrusion 130 is opened in the outer protrusion 130, and the light transmission hole 133 is opened at the outer side thereof to divide the outer protrusion 130 into a suction block 131 and a compression block 134. Referring to fig. 4, during welding, the suction nozzle 100 sucks the workpiece 541 by the convex portion 130 and transfers the workpiece 541 to a corresponding position of the welding base 54, the region to be welded of the workpiece 541 is exposed by the light transmission hole 133, and the laser beam 441 emitted by the laser generator 44 is emitted from above the light transmission hole 133 into the region to be welded of the workpiece 541 for welding. Adopt above-mentioned technical scheme the structure, it does not need to reserve the laser additionally on the side of suction nozzle on setting up light trap 133 on suction nozzle 100 and dodges the station, this one side makes the horizontal installation space of suction nozzle kept enough little, laser beam 441 can penetrate from the directly over work piece through light trap 133, the energy dissipation of laser beam 441 that has reduced because the laser light path is prolonged the result deliberately, welding efficiency and welding quality have been improved, on the other hand, the setting up of light trap 133 can reduce the interference influence that other spare part led to the fact the laser light path, welding efficiency and welding quality have further been improved, finally, the setting up of light trap 133 can play certain effect of blockking to the high temperature welding bits that produces among the welding process, prevent that the welding bits from causing destruction and potential safety hazard to the work piece.

Referring to fig. 12 and 15, the mounting segment 110 is integrally formed with a mounting positioning bar 114 protruding from a side surface thereof, an extending direction of the mounting positioning bar 114 is identical to a length direction of the mounting segment 110, the nozzle mounting arm 5331 is formed with a nozzle mounting groove 5332, and when the nozzle 100 is mounted to the nozzle mounting arm 5331, the mounting positioning bar 114 is at least partially received inside the nozzle mounting groove 5332.

Referring again to fig. 9, it can be seen that at least a portion of the sidewall 135 of the light-transmitting hole extends upward from the bottom to form a taper, so that the inner diameter of the light-transmitting hole is gradually expanded from bottom to top. In a specific implementation, the sidewall 135 may be a cone shape with a large top and a small bottom, or a square cone shape with a large top and a small bottom. Adopt above-mentioned technical scheme the structure, because the internal diameter of light trap is the trend of gradually expanding along the orientation from up down for when the laser beam jets into from the top of light trap, further reduced the interference influence that the inner wall of light trap led to the fact the laser beam, be convenient for simultaneously operating personnel or visual detection system track, monitor in real time to the welding area on the work piece.

Referring to fig. 11 and 12, the internal structure of the suction nozzle 100 is shown in detail, specifically, a suction hole is opened at the bottom of the suction block 131, and a suction air path 140 extending to the suction hole is opened inside the suction nozzle 100.

Further, the suction air path 140 includes a first air path 141, a second air path 142 and a third air path 143 respectively extending inside the mounting section 110, the suspending section 120 and the extending section, wherein the second air path 142 is respectively communicated with the first air path 141 and the third air path 143, and the third air path 143 is communicated with the suction hole.

In a specific implementation, the extending direction of the first air path 141 is consistent with the length direction of the mounting section 110;

the first air path 141 extends outwards from the inside of the mounting section 110 until a first machining hole 111 is formed in the side surface of the mounting section 110; the second air passage 142 extends outward from the inside of the overhanging section 120 until a second machining hole 113 is formed at the side of the mounting section 110 or the overhanging section 120. Although not all of them are shown, it should be understood that the second tooling hole 113 is not exclusively formed, and in the present embodiment, the second tooling hole 113 is formed at the top of the overhanging section 120.

During processing, a drilling tool can drill in from the first processing hole 111 along the length direction of the mounting section 110 until the first air path 141 is expanded to the joint of the mounting section 110 and the overhanging section 120, then the second air path 142 starts to be drilled on the second processing hole 113, finally the second air path 142 is communicated with the first air path 141, finally the third air path 143 starts to be drilled from the bottom of the suction block 131, finally the third air path 143 is communicated with the second air path 142, after the first air path 141, the second air path 142 and the third air path 143 are processed, the vacuum generating hole 112 leading to the first air path 141 is opened on the side surface of the mounting section 110, when in use, the first processing hole 111 and the second processing hole 113 are plugged by a plug, and simultaneously the air suction pipe of the vacuum generator is abutted to the vacuum generating hole 112, so that negative pressure can be generated inside the suction air path 140. By adopting the structure of the technical scheme, the suction nozzle is provided with the built-in suction gas circuit, and the suction gas circuit is arranged into three sections according to the extending path of the suction gas circuit, so that the problem that the traditional external gas circuit interferes with laser beams is avoided, and the problems that the traditional built-in gas circuit is difficult to process and has high production and manufacturing costs are also avoided.

Referring next to fig. 10, 11, 12 and 15, the elastomer 132 is shown in detail. Specifically, the bottom of the suction block 131 is provided with an elastic body 132 covering the periphery of the suction hole, and a suction port 1321 communicated with the suction hole is opened in the elastic body 132.

In a specific implementation, the elastic body 132 is made of a thermoplastic elastic material in the shape of polystyrene, and the elastic body 132 is fixed to the bottom of the suction block 131 by means of two-color injection molding; the mounting section 110, the overhang section 120 and the extension section are made of beryllium copper or ceramic materials; the surfaces of the mounting section 110, the suspending section 120 and the extending section are plated with diamond-like carbon film layers. By adopting the structure of the technical scheme, as the periphery of the suction hole is covered with the elastomer made of the thermoplastic elastic material, the contact friction force between the suction nozzle and the workpiece is improved, the preset suction area on the workpiece is conveniently and accurately sucked, meanwhile, the probability of vacuum breaking of the suction nozzle in the suction process is reduced, and the workpiece is prevented from being scratched by the suction nozzle in the suction process; furthermore, the suction nozzle is made of beryllium copper or ceramic materials, and meanwhile, the surface layer of the suction nozzle is plated with the diamond-like carbon film layer, so that the capability of the suction nozzle for bearing laser erosion is greatly improved, and the service life of the suction nozzle is prolonged; further, because the elastomer adopts the mode of double-colored injection moulding to fix to absorb the bottom of piece, the elastomer uses the back that appears wearing and tearing through a period of time, in order not to influence the precision of absorbing, can realize the change to the elastomer through the mode of the new elastomer of secondary injection moulding after peeling off the elastomer of wearing and tearing, not only makes the maintenance of suction nozzle more economical, and the difference in performance can not appear in the elastomer after the change moreover, and this undoubtedly helps improving welding quality.

Referring now to fig. 10 and 14, which show the bottom of the mouthpiece 100, it can be seen that the bottom edge of the light hole 133 is provided with at least one feature positioning block 136, and the feature positioning block 136, the pressing block 134 and the bottom of the elastic body 132 are all in the same horizontal plane. In this embodiment, only one feature positioning block 136 is provided, and the feature positioning block 136 mainly plays a role in stably pressing the peripheral area of the to-be-welded area of the workpiece and the welding substrate, so as to prevent quality problems such as poor welding, desoldering, and weld cracking caused by deformation such as undulation and warpage of the peripheral area during welding. Although not shown here, it should be understood that the feature locator block 136 may be provided in plurality along the bottom edge of the light-transmissive hole 133 if it is desired to hold the workpiece and the weld base closer together.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. A laser welding apparatus, comprising:

a suction mechanism (5) for sucking and transferring the work to be welded; and

the laser generating mechanism (4) is arranged beside the suction mechanism (5);

wherein the laser generating mechanism (4) comprises:

a laser mount (41);

a laser mounting base plate (42) which is connected with the laser mounting base (41) in a sliding manner;

a laser generator (44) mounted on the laser mounting baseplate (42); and

the lifting driver (43) is arranged on the laser mounting base (41) and is in transmission connection with the laser mounting base plate (42);

the laser generator (44) comprises a steering driver mounted on the laser mounting base plate (42) and a laser source in transmission connection with the steering driver, the laser source enables a laser beam (441) emitted by the laser source to be switched back and forth among at least four emitting angles under the driving of the steering driver, and the focal point of the laser beam (441) is always located on the same horizontal plane in the switching process.

2. The laser welding device according to claim 1, characterized in that the suction means (5) comprises:

a suction mounting base (53); and

a suction nozzle (100) mounted on the suction mounting base (53);

wherein the suction mount (53) comprises:

a mounting riser (531) extending in a vertical direction;

the sliding mounting plate (532) is connected with the side face of the mounting vertical plate (531) in a sliding mode, and the sliding mounting plate (532) can slide in a reciprocating mode relative to the mounting vertical plate (531) along the vertical direction to switch between a natural state and a buffering state; and

with slide mounting board (532) fixed mounting's suction nozzle mount pad (533), the side rigid coupling of suction nozzle mount pad (533) has suction nozzle installation cantilever (5331), suction nozzle installation cantilever (5331) follow the level is outwards extended from the side of suction nozzle mount pad (533), suction nozzle (100) detachably installs on suction nozzle installation cantilever (5331).

3. The laser welding device according to claim 2, wherein the suction mount (53) further comprises a mount plate (535) fixed to the top of the mount vertical plate (531), the side surface of the slide mount plate (532) is integrally formed with a buffer receiving platform (5322) protruding horizontally outward, the mount plate (535) extends in the horizontal direction and at least partially extends above the buffer receiving platform (5322), an elastically deformable buffer member (534) is connected between the mount plate (535) and the buffer receiving platform (5322), and the buffer member (534) acts on the buffer receiving platform (5322) such that when the suction nozzle (100) is subjected to the compressive force to disappear, the slide mount plate (532) can slide downward in the vertical direction to return from the buffer state to the natural state.

4. The laser welding apparatus according to claim 3, further comprising a robot (51) and a visual inspection unit (52) mounted on the robot (51), wherein the suction mount (53) is mounted to the robot (51) through the mounting plate (535).

5. The laser welding apparatus as claimed in claim 2, characterized in that the side of the slide mounting plate (532) is formed with a mounting groove (5321) recessed towards the inside thereof, the nozzle mounting seat (533) includes a vertical section (5334) and a horizontal section (5333), the horizontal section (5333) being integrally combined with the vertical section (5334) without extending horizontally outward from the vertical section (5334), the vertical section (5334) abutting against a main portion of the slide mounting plate (532) when the nozzle mounting seat (533) is mounted to the slide mounting plate (532), the horizontal section (5333) being at least partially received inside the mounting groove (5321).

6. The laser welding apparatus as recited in claim 2, characterized in that the suction nozzle (100) comprises:

a mounting section (110);

a depending section (120) integrally joined to the mounting section (110) at one of the ends of the mounting section (110) and extending downwardly from the mounting section (110); and

an extension section mounted to the bottom of the depending section (120);

the periphery of the extension section at least partially protrudes out of the suspension section (120) to form an outer protruding part (130), a light transmission hole (133) penetrating through the upper surface and the lower surface of the outer protruding part (130) is formed in the outer protruding part, and the light transmission hole (133) is opened on the outer side of the outer protruding part to divide the outer protruding part (130) into a suction block (131) and a pressing block (134).

7. The laser welding apparatus according to claim 6, wherein the mounting section (110) is integrally formed with a mounting and positioning bar (114) protruding from a side surface thereof, an extending direction of the mounting and positioning bar (114) is identical to a length direction of the mounting section (110), the nozzle mounting arm (5331) is formed with a nozzle mounting groove (5332), and when the nozzle (100) is mounted to the nozzle mounting arm (5331), the mounting and positioning bar (114) is at least partially received inside the nozzle mounting groove (5332).

8. The laser welding apparatus according to claim 6, wherein at least a part of the side wall (135) of the light-transmitting hole (133) extends upward from the bottom in a tapered shape so that the inner diameter of the light-transmitting hole (133) is gradually expanded in a direction from bottom to top.

9. The laser welding device according to claim 6, wherein a suction hole is formed at the bottom of the suction block (131), and a suction air passage (140) extending to the suction hole is formed inside the suction nozzle.

10. The laser welding apparatus as claimed in claim 9, wherein the bottom of the suction block (131) is provided with an elastic body (132) covering the outer periphery of the suction hole, and a suction port (1321) communicating with the suction hole is opened in the elastic body (132).

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