CN220498056U - Visual positioning and ranging structure for laser welding - Google Patents

Abstract

The application relates to a visual positioning ranging structure for laser welding, which comprises a frame; the three-axis mobile platform comprises a group of X-axis driving mechanism, Y-axis driving mechanism and Z-axis driving mechanism; the visual positioning mechanism comprises a mounting frame, an industrial camera, an industrial light source and a range finder assembly, wherein the mounting frame is arranged on the Z-axis driving mechanism, and the industrial camera, the industrial light source and the range finder assembly are sequentially arranged on the mounting frame from top to bottom; laser welding head subassembly, it sets up on the mounting bracket, and range finder subassembly is located laser welding head subassembly below, industry light source and industry light source parallel arrangement, this application accessible triaxial moving platform, mounting bracket, industry camera, industry light source and range finder subassembly can carry out X axle, Y axle and Z axle direction to the laser welding head and reach three-dimensional accurate positioning effect, improve welded accuracy, avoid misoperation that manual operation brought simultaneously, improve the qualification rate of product.

Description

Visual positioning and ranging structure for laser welding

Technical Field

The application relates to the technical field of laser welding, in particular to a visual positioning ranging structure for laser welding.

Background

With the widespread use of digital products such as mobile phones, notebook computers, etc., lithium ion batteries are widely used in such products with excellent performance and gradually developing into other product application fields, and with the development of science and technology, lithium batteries have become the mainstream.

In the prior art, in the production process of lithium batteries, a laser welding device is required to carry out an aluminum-palladium welding procedure on the pole of the lithium battery.

At present, the welding of the lithium battery pole by using a laser welding machine is widely applied, however, when the existing laser welding machine is used for welding the lithium battery, the welding precision of the lithium battery pole is not high due to the fact that the positioning equipment is lack of manual control or the single-camera correction and identification point auxiliary positioning technology is utilized, and the processing effect is affected.

In view of the above problems, a visual positioning ranging structure for laser welding is now designed.

Disclosure of Invention

The embodiment of the application provides a visual positioning ranging structure for laser welding to solve and because lack the manual control of locating device utilization manual work among the related art, perhaps utilize single camera correction and mark point auxiliary positioning technique, cause the welding precision of lithium cell utmost point post not high, influence the processing effect problem.

In a first aspect, there is provided a visual positioning ranging structure for laser welding, comprising:

a frame;

the three-axis moving platform comprises a group of X-axis driving mechanisms, Y-axis driving mechanisms and Z-axis driving mechanisms, wherein the group of X-axis driving mechanisms are horizontally arranged on the frame relatively, the Y-axis driving mechanisms are horizontally arranged between the tops of the group of X-axis driving mechanisms, and the Z-axis driving mechanisms are vertically arranged on the Y-axis driving mechanisms;

the visual positioning mechanism comprises a mounting frame, an industrial camera, an industrial light source and a range finder assembly, wherein the mounting frame is arranged on the Z-axis driving mechanism, and the industrial camera, the industrial light source and the range finder assembly are sequentially arranged on the mounting frame from top to bottom, and the industrial light source is positioned under the industrial camera;

the laser welding head assembly is arranged on the mounting frame, the range finder assembly is positioned below the laser welding head assembly, and the industrial light source are arranged in parallel;

and the pushing mechanism is arranged on the mounting frame and is positioned below the range finder assembly.

In some embodiments, the range finder assembly comprises a first cylinder, a moving plate and a range finder, wherein the first cylinder is arranged on the mounting frame, the range finder is arranged on the moving plate, and the first cylinder is connected with the moving plate and used for driving the moving plate to move along the length direction of the mounting frame.

In some embodiments, the pressing mechanism includes a second cylinder, a connecting plate and a pressing plate, the second cylinder is arranged on the mounting frame, the pressing plate is arranged at the bottom of the connecting plate, and the second cylinder is connected with the connecting plate and used for driving the connecting plate to lift.

In some embodiments, the device further comprises a discharging table, wherein the discharging table is arranged inside the frame, the discharging table is positioned below the pressing mechanism, and two ends of the discharging table extend to the outer side of the frame.

In some embodiments, the X-axis driving mechanism, the Y-axis driving mechanism and the Z-axis driving mechanism all comprise a shell, a screw rod, a driving motor, a driving piece, a sliding plate and a supporting plate, wherein the screw rod is rotationally arranged inside the shell, the driving motor is arranged on the shell, an output shaft of the driving motor is connected with the screw rod, the driving piece is in threaded connection with the outside of the screw rod, the sliding plate is arranged on the shell, the supporting plate is sleeved on the outside of the sliding plate in a sliding way, a sliding hole is formed in the shell, and one end of the driving piece, far away from the screw rod, penetrates through the sliding hole and is connected with the supporting plate.

In some embodiments, the industrial light source is a ring-shaped industrial light source.

The embodiment of the application provides a vision positioning range finding structure for laser welding, X axle actuating mechanism and Y axle actuating mechanism control vision positioning mechanism through triaxial moving platform remove to initial position, make industry camera can shoot the lithium cell image of waiting to weld, afterwards, carry out a lot of shooting to waiting welded lithium cell utmost point post through the camera of industry camera, and carry out analysis to the image and confirm the midpoint of waiting to weld the position, carry out the light filling through industry light source, X axle and Y axle orientation's fine setting are carried out to the laser welding head subassembly through triaxial moving platform's X axle actuating mechanism and Y axle actuating mechanism control, carry out X axle and Y axle orientation's location to the laser welding head subassembly, afterwards, fix its position through pushing down the mechanism, the lithium cell utmost point post that the rethread range finder subassembly is waiting to weld carries out the range finding location, carry out Z axle orientation's fine setting to the laser welding head subassembly, let laser welding head subassembly Z epaxial accurate positioning, thereby can carry out X axle, Y axle and Z axle orientation reach three-dimensional accurate positioning to the laser welding head subassembly, the manual error is carried out X axle and Y axle orientation, the accuracy of improvement, the product qualification rate of improvement operation is avoided bringing.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic three-dimensional structure provided in an embodiment of the present application;

FIG. 2 is a schematic three-dimensional structure provided in an embodiment of the present application;

FIG. 3 is a three-dimensional schematic diagram of a visual positioning mechanism according to an embodiment of the present disclosure;

FIG. 4 is a three-dimensional schematic diagram of a visual positioning mechanism according to an embodiment of the present disclosure;

fig. 5 is a three-dimensional schematic diagram of a triaxial mobile platform according to an embodiment of the present application;

fig. 6 is a three-dimensional schematic diagram of a rangefinder assembly provided in an embodiment of the present application;

fig. 7 is a top cross-sectional view of a Y-axis drive mechanism provided in an embodiment of the present application.

In the figure: 1. a frame; 2. a triaxial mobile platform; 21. an X-axis driving mechanism; 22. a Y-axis driving mechanism; 221. a housing; 222. a screw rod; 223. a driving motor; 224. a transmission plate; 225. a slide plate; 226. a support plate; 23. a Z-axis driving mechanism; 3. a visual positioning mechanism; 31. a mounting frame; 32. an industrial camera; 33. an industrial light source; 34. a rangefinder assembly; 341. a first cylinder; 342. a moving plate; 343. a range finder; 4. a laser welding head assembly; 5. a pressing mechanism; 51. a cylinder; 52. a connecting plate; 53. a lower pressing plate; 6. and a discharging table.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The embodiment of the application provides a visual positioning ranging structure for laser welding, which can solve the problems that in the related art, due to the lack of positioning equipment, manual control is utilized, or single-camera correction and identification point auxiliary positioning technology is utilized, the welding precision of a lithium battery pole is low, and the processing effect is affected.

Referring to fig. 1-3, a visual positioning ranging structure for laser welding includes; the three-axis moving platform 2 comprises a group of X-axis driving mechanisms 21, Y-axis driving mechanisms 22 and Z-axis driving mechanisms 23, wherein the group of X-axis driving mechanisms 21 are relatively and horizontally arranged on the frame 1, the Y-axis driving mechanisms 22 are horizontally arranged between the tops of the group of X-axis driving mechanisms 21, and the Z-axis driving mechanisms 23 are vertically arranged on the Y-axis driving mechanisms 22; the visual positioning mechanism 3 comprises a mounting frame 31, an industrial camera 32, an industrial light source 33 and a range finder assembly 34, wherein the mounting frame 31 is arranged on the Z-axis driving mechanism 23, and the industrial camera 32, the industrial light source 33 and the range finder assembly 34 are sequentially arranged on the mounting frame 31 from top to bottom, and the industrial light source 33 is positioned under the industrial camera 32; the laser welding head assembly 4 is arranged on the mounting frame 31, the range finder assembly 34 is positioned below the laser welding head assembly 4, and the industrial light source 33 is arranged in parallel with the industrial light source 33; the depressing mechanism 5 is provided on the mounting frame 31, and the depressing mechanism 5 is located below the range finder assembly 34.

It is understood that the machine frame further comprises a discharging table 6, wherein the discharging table 6 is arranged inside the machine frame 1, the discharging table 6 is positioned below the pressing mechanism 5, and two ends of the discharging table 6 extend to the outer side of the machine frame 1.

In an actual welding process, a lithium battery to be welded is placed on a discharging table 6, a triaxial moving platform 2 is started, a visual positioning mechanism 3 is driven to move to an initial position through an X-axis driving mechanism 21, a Y-axis driving mechanism 22 and a Z-axis driving mechanism 23, an industrial camera 32 is started, an industrial light source 33 is started to illuminate the lithium battery, the definition of the shot image is improved, the lithium battery pole to be welded is shot for a plurality of times through a lens of the industrial camera 32, the midpoint of the position to be welded is determined by analyzing the image, then, a feedback signal of measured data is used for controlling the X-axis driving mechanism 21 and the Y-axis driving mechanism 22, the laser welding head assembly 4 is driven to conduct fine adjustment in X-axis and Y-axis directions through the X-axis driving mechanism 21 and the Y-axis driving mechanism 22, the laser welding head assembly 4 is enabled to conduct positioning in the X-axis and Y-axis directions, then, a pressing mechanism 5 is started to conduct fixing on the lithium battery pole, the position of the lithium battery pole is locked, a distance meter assembly 34 is started to conduct fine adjustment on the position of the lithium battery pole, and the laser welding head assembly can conduct accurate positioning in the Z-axis direction through the Z-axis driving mechanism 23, and the Z-axis direction of the laser welding head assembly can be enabled to conduct fine adjustment in the Z-axis direction, and the accurate positioning effect of the laser welding head assembly can be achieved.

Specifically, as shown in fig. 1, 3 and 5, the X-axis driving mechanism 21, the Y-axis driving mechanism 22 and the Z-axis driving mechanism 23 in this embodiment each include a housing 221, a screw rod 222, a driving motor 223, a transmission piece 224, a slide plate 225 and a support plate 226, the screw rod 222 is rotatably disposed inside the housing 221, the driving motor 223 is disposed on the housing 221, an output shaft of the driving motor 223 is connected with the screw rod 222, the transmission piece 224 is screwed outside the screw rod 222, the slide plate 225 is disposed on the housing 221, the support plate 226 is slidably sleeved outside the slide plate 225, a slide hole is disposed on the housing 221, one end of the transmission piece 224, which is far from the screw rod 222, penetrates the slide hole and is connected with the support plate 226, wherein the housings 221 of the two X-axis driving mechanisms 21 are disposed at the top of the frame 1 relatively horizontally, the housing 221 of the Y-axis driving mechanism 22 is disposed horizontally between the tops of the support plates 226 of the two X-axis driving mechanisms 21, and the housing 221 of the Z-axis driving mechanism 23 is disposed above the support plate 226 of the Y-axis driving mechanism 22, in addition, the mounting frame 31 is disposed on the support plate 226 of the Y-axis driving mechanism 22.

In the use, through starting driving motor 223, driving motor 223 drives lead screw 222 and rotates, through the spiral rotation thrust of lead screw 222, drive the drive piece and follow lead screw 222 length direction and remove to drive backup pad 226 and adjust along slide 225 length direction, through keeping away from above-mentioned, can control the backup pad 226 on the X axle actuating mechanism 21 and remove along frame 1 width case, the backup pad 226 on the control Y axle actuating mechanism 22 removes along frame 1 length case, the backup pad 226 on the control Z axle actuating mechanism 23 removes along frame 1 height case, thereby carry out three-dimensional regulation work to laser welding head subassembly 4.

Further, as shown in fig. 6, the rangefinder assembly 34 in this embodiment includes a first cylinder 341, a movable plate 342, and a rangefinder 343, the first cylinder 341 is disposed on the mounting frame 31, the rangefinder 343 is disposed directly under the laser welding head assembly 4, the rangefinder 343 is disposed on the movable plate 342, and the first cylinder 341 is connected to the movable plate 342 and is used for driving the movable plate 342 to move along the length of the mounting frame 31.

In order to accurately position the Y-axis direction, the distance measuring device 343 is positioned on the same line with the laser spot of the laser welding head assembly 4, and therefore, after the three-axis positioning is completed, the first cylinder 341 is started to drive the movable plate 342 to move along the length of the mounting frame 31, so that the distance measuring device 343 can be moved away from the lower side of the laser welding head assembly 4, and the laser welding head assembly 4 can weld the lithium battery.

Specifically, as shown in fig. 3, the pressing mechanism 5 in this embodiment includes a second air cylinder 51, a connecting plate 52, and a pressing plate 53, where the second air cylinder 51 is disposed on the mounting frame 31, the pressing plate 53 is disposed at the bottom of the connecting plate 52, the second air cylinder 51 is connected with the connecting plate 52 and is used for driving the connecting plate 52 to lift, and the pressing plate 53 is located under the rangefinder 343.

When in actual use, the lithium battery to be welded is placed on the discharging table 6, the second air cylinder 51 is started, the second air cylinder 51 drives the connecting plate 52 to lift and move, and the pole of the lithium battery is pressed by the falling of the lower pressing plate 53.

The industrial light source 33 in this embodiment is a ring-shaped industrial light source.

It will be appreciated that the top of the housing 1 in this embodiment is provided with a protective cover.

When in actual use, the pollution to the environment is reduced by avoiding the dust generated by welding from drifting around.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A vision positioning and ranging structure for laser welding, comprising:

a frame (1);

the three-axis mobile platform (2) comprises a group of X-axis driving mechanisms (21), Y-axis driving mechanisms (22) and Z-axis driving mechanisms (23), wherein the group of X-axis driving mechanisms (21) are horizontally arranged on the frame (1), the Y-axis driving mechanisms (22) are horizontally arranged between the tops of the group of X-axis driving mechanisms (21), and the Z-axis driving mechanisms (23) are vertically arranged on the Y-axis driving mechanisms (22);

the visual positioning mechanism (3) comprises a mounting frame (31), an industrial camera (32), an industrial light source (33) and a range finder assembly (34), wherein the mounting frame (31) is arranged on the Z-axis driving mechanism (23), and the industrial camera (32), the industrial light source (33) and the range finder assembly (34) are sequentially arranged on the mounting frame (31) from top to bottom, and the industrial light source (33) is positioned under the industrial camera (32);

a laser welding head assembly (4) which is arranged on the mounting frame (31), and a range finder assembly (34) is positioned below the laser welding head assembly (4), and an industrial light source (33) is arranged in parallel with the industrial light source (33);

and the pushing mechanism (5) is arranged on the mounting frame (31), and the pushing mechanism (5) is positioned below the range finder assembly (34).

2. A visual positioning and ranging structure for laser welding as defined in claim 1, wherein:

the range finder assembly (34) comprises a first air cylinder (341), a moving plate (342) and a range finder (343), wherein the first air cylinder (341) is arranged on the mounting frame (31), the range finder (343) is arranged on the moving plate (342), and the first air cylinder (341) is connected with the moving plate (342) and is used for driving the moving plate (342) to move along the length of the mounting frame (31).

3. A visual positioning and ranging structure for laser welding as defined in claim 1, wherein:

the pressing mechanism (5) comprises a second air cylinder (51), a connecting plate (52) and a pressing plate (53), wherein the second air cylinder (51) is arranged on the mounting frame (31), the pressing plate (53) is arranged at the bottom of the connecting plate (52), and the second air cylinder (51) is connected with the connecting plate (52) and used for driving the connecting plate (52) to lift.

4. A visual positioning and ranging structure for laser welding as defined in claim 1, wherein:

still include blowing platform (6), blowing platform (6) set up inside frame (1), blowing platform (6) are located pushing down mechanism (5) below, and blowing platform (6) both ends extend to frame (1) outside.

5. A visual positioning and ranging structure for laser welding as defined in claim 1, wherein:

x axle actuating mechanism (21), Y axle actuating mechanism (22) and Z axle actuating mechanism (23) all include shell (221), lead screw (222), driving motor (223), driving piece (224), slide (225) and backup pad (226), lead screw (222) rotate and set up inside shell (221), driving motor (223) set up on shell (221), driving motor (223) output shaft is connected with lead screw (222), driving piece (224) threaded connection is in the lead screw (222) outside, slide (225) set up on shell (221), backup pad (226) slip cup joint in slide (225) outside, be equipped with the slide hole on shell (221), lead screw (222) one end is kept away from in driving piece (224) runs through the slide hole and is connected with backup pad (226).

6. A visual positioning and ranging structure for laser welding as set forth in claim 5, wherein:

the industrial light source (33) is a ring-shaped industrial light source.