CN219188978U

CN219188978U - Laser welding machine

Info

Publication number: CN219188978U
Application number: CN202223025392.6U
Authority: CN
Inventors: 彭信翰; 黄柏源; 方涵; 文锡; 李康为
Original assignee: Hymson Laser Technology Group Co Ltd
Current assignee: Hymson Laser Technology Group Co Ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-06-16
Anticipated expiration: 2032-11-15

Abstract

The utility model provides a laser welding machine which comprises an adjusting plate, a mask plate and a fixing plate. The adjusting plate is provided with a first light passing hole, the mask plate is provided with a second light passing hole, the light path passes through the adjusting plate and the mask plate successively, the first light passing hole is provided with a first projection on a plane perpendicular to the light path transmission direction, the second light passing hole is provided with a second projection on a plane perpendicular to the light path transmission direction, the second projection is positioned inside the first projection, the mask plate is connected to the adjusting plate, the surface of the adjusting plate facing the mask plate is parallel to the surface of the mask plate facing the adjusting plate, the section of the fixing plate in the thickness direction is rectangular, the fixing plate is provided with a strip-shaped hole, the strip-shaped hole is opened in the length direction of the fixing plate, and the fixing plate is connected with the adjusting plate and the mask plate. The laser welding machine and the welding method can ensure the welding precision while accelerating the production speed of the MiniLED, and greatly improve the production efficiency in a wire sweep welding mode.

Description

Laser welding machine

Technical Field

The present utility model relates to the field of processing equipment, but is not limited to, and in particular to a laser welding machine.

Background

As a type of processing equipment, a welding apparatus is widely used for fixing one of components (for example, a welding object) to another component (for example, a welding object).

For example, LEDs have been widely used in the display field as a light source for emitting light. The LED chip is soldered into a circuit board by using a soldering apparatus or the like to use. With the increasing demands for display quality, size of display devices, and the like, the demands for LED chips are also increasing. Accordingly, there is a trend to miniaturize the LED chip. With miniaturization of LED chips, it is possible to realize an LED chip array having a higher pixel density, and to improve display quality, and the like.

After miniaturization of LED chips, LED chips required for the same-sized display device become more than those of normal size. In addition, in order to meet the precision requirement, the miniaturized LED chip has a certain difficulty in production and processing, so that the output of the miniaturized LED chip is difficult to meet the requirement. Therefore, how to increase the production speed of the miniaturized LED chip under the premise of ensuring the precision requirement of the miniaturized LED is a technical problem to be solved by the skilled person.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the laser welding machine and the welding method, which reshape the light beam through the mask plate, the moving platform carries the bonding pad with the die bonding according to the pre-designed moving track, and finally the line sweep welding of the MiniLED is completed under the action of the reshaped light beam, so that the production speed of the MiniLED can be accelerated and the welding precision can be ensured.

In order to solve the problems, the utility model adopts a technical scheme that: a laser welding machine is provided, including an adjustment plate, a mask plate, and a fixing plate. The adjusting plate is provided with a first light passing hole, the mask plate is provided with a second light passing hole, the light path passes through the adjusting plate and the mask plate successively, the first light passing hole is provided with a first projection on a plane perpendicular to the light path transmission direction, the second light passing hole is provided with a second projection on a plane perpendicular to the light path transmission direction, the second projection is positioned inside the first projection, the mask plate is connected to the adjusting plate, the surface of the adjusting plate facing the mask plate is parallel to the surface of the mask plate facing the adjusting plate, the section of the fixing plate in the thickness direction is rectangular, the fixing plate is provided with a strip-shaped hole, the strip-shaped hole is opened in the length direction of the fixing plate, and the fixing plate is connected with the adjusting plate and the mask plate.

In some embodiments, the laser welder further includes a first fastener, the adjustment plate is provided with a first positioning hole, the mask plate is provided with a second positioning hole, the second positioning hole corresponds to the first positioning hole, and the first fastener penetrates through the first positioning hole and the second positioning hole.

In some embodiments, the first locating holes are circumferentially arranged around the first light passing holes and the second locating holes are circumferentially arranged around the second light passing holes.

In some embodiments, the mask further comprises a water inlet, a water outlet, and an exchange port for routing a waterway.

In some embodiments, along the length direction of the adjusting plate, one end of the adjusting plate, which is far away from the first light through hole, is connected with the laser welding machine.

In some embodiments, the laser welding machine further comprises a second fastener and a third fastener, the fixing plate is provided with a third positioning hole, the side wall of the mask plate is provided with a first positioning groove, the second fastener penetrates through the third positioning hole and is connected with the first positioning groove, the side wall of the adjusting plate is provided with a second positioning groove, and the third fastener penetrates through the strip-shaped hole and is connected with the second positioning groove.

In some embodiments, an auxiliary hole is arranged between the second light-passing hole contour line and the mask plate outer contour line, the auxiliary hole penetrates through the mask plate along the thickness direction of the mask plate, one side, close to the mask plate outer contour line, of the auxiliary hole protrudes towards the mask plate outer contour line, and one side, close to the second light-passing hole contour line, of the auxiliary hole protrudes towards the second light-passing hole contour line.

In some embodiments, along the light path transfer direction, the adjusting plate outer contour has a third projection on a plane perpendicular to the light path transfer direction, and the mask plate outer contour has a fourth projection on a plane perpendicular to the light path transfer direction, the fourth projection being located inside the third projection.

In some embodiments, the laser welder further comprises an optical path module, a machine vision system, a stage, a moving stage, and a marble stage. The light path module is positioned at one side of the adjusting plate, which is away from the mask plate, and emits light beams forming a light path, wherein the light beams are flat-top light beams; the machine vision system comprises a CCD camera positioned beside the light path module; the objective table is provided with a welding pad for welding of a laser welding machine; the movable platform is provided with an objective table; the moving platform is arranged on the marble platform.

The laser machine and the welding method have the following advantages:

the laser welding machine comprises an adjusting plate, a mask plate and a fixing plate. The adjusting plate is directly connected with the laser welding machine, and the mask plate is connected to the adjusting plate, so that the position of the laser welding machine is indirectly fixed. According to the matching relation, the arrangement of the adjusting plates is adjusted firstly to enable the upper surface and the lower surface of the adjusting plates to be perpendicular to the light path, and then the upper surface and the lower surface of the mask plate are adjusted to be parallel to the adjusting plates, so that the upper surface and the lower surface of the mask plate are perpendicular to the light path. The first light through hole is formed in the adjusting plate, the second light through hole is formed in the mask plate, and the side walls of the first light through hole 110 and the second light through hole 210 are parallel to the light path transmission direction. Along the light path transfer direction, the first light passing hole has a first projection on a plane perpendicular to the light path transfer direction, the second light passing hole has a second projection on a plane perpendicular to the light path transfer direction, and the second projection is located inside the first projection. The light path sequentially passes through the first light-passing holes on the adjusting plate and then passes through the second light-passing holes on the mask plate, and the opening length and the width of the first light-passing holes are both larger than the length and the width of the light beam for generating the light path, namely, the first light-passing holes have no shaping function of the light beam. The opening length and width of the second light through hole are smaller than the length and width of the light beam of the generated light path, namely, the second light through hole shapes the light beam. Considering that the light beam is slightly diverged when leaving the second light through hole after being shaped by the second light through hole, the closer the mask plate with the second light through hole is to the workpiece, the better. Because the heights of different workpieces are different, the heights of the mask plates need to be flexibly adjusted. The mask plate of this scheme is installed on the regulating plate, and the regulating plate is fixed in laser welding machine, and mask plate and regulating plate pass through the fixed plate and connect, only need adjust the distance between mask plate and the regulating plate and can realize adjusting the distance of mask plate to the work piece, and the fixed plate is equipped with the bar hole parallel with light path transmission direction, conveniently adjusts the distance between mask plate and the regulating plate.

The structure that the mask plate is connected with the adjusting plate is adopted, so that the position and the height of the mask plate and the vertical degree of the mask plate to the light beam are more convenient to adjust, the mask plate arranged in the way is convenient to detach and replace, the mask plate with the second light through holes with different opening sizes is replaced, the requirements of welding MiniLED chips with different sizes are met, and the welding precision is improved.

The moving platform is provided with the object stage provided with the bonding pad, and the moving platform passes through the shaped light beam back and forth according to a preset track, so that the line scanning welding of the laser welding machine on the MiniLED chip is realized, the welding precision of the MiniLED chip is ensured, and meanwhile, the welding speed of the MiniLED is accelerated.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a laser welder of the present utility model;

FIG. 2 is a schematic view of a beam shaping device in the laser welder shown in FIG. 1;

FIG. 3 is an exploded view of the beam shaping device shown in FIG. 2;

FIG. 4 is a schematic view of the structure of the adjusting plate in the beam shaping device shown in FIG. 2;

FIG. 5 is a schematic view of a mask plate in the beam shaping device shown in FIG. 2;

FIG. 6 is a schematic view showing the structure of a fixing plate in the beam shaping device shown in FIG. 2;

FIG. 7 is a schematic view of a first fastener of the beam shaping device of FIG. 2;

FIG. 8 is a schematic view of an optical path module of the laser welder shown in FIG. 1;

FIG. 9 is a schematic diagram of a machine vision system of the laser welding machine of FIG. 1;

FIG. 10 is a schematic view of the stage structure of the laser welder shown in FIG. 1;

FIG. 11 is a schematic diagram of a mask structure with auxiliary holes.

In the drawings, each reference numeral denotes:

an adjustment plate 100; a first light-passing hole 110; a first positioning hole 120; a second positioning groove 130; a fourth positioning hole 140; a fifth positioning hole 150;

a mask 200; a second light passing hole 210; a second positioning hole 220; a water inlet 230; a water outlet 240; a switch port 250; a first positioning groove 260; an auxiliary hole 270;

a fixing plate 300; a third positioning hole 310; a bar-shaped hole 320;

a first fastener 400; a linear bearing 410; a sixth positioning hole 411;

an optical path module 500; a light beam 510;

a machine vision system 600; a robot 610; a CCD camera 620;

a mobile platform 700; x-axis adjustment stage 710; y-axis adjustment platform 720;

a stage 800; a bonding pad 810;

a temperature control table 900;

marble platform 1000.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, left, right, front, rear, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

It is understood that, in the related art, after the LED chip is miniaturized, the LED chip required for the same size display device becomes more than the normal size LED chip. In addition, in order to meet the precision requirement, the miniaturized LED chip has a certain difficulty in production and processing, so that the miniaturized LED chip yield is difficult to meet the requirement.

A laser welder and a welding method according to an embodiment of the present utility model are described below with reference to fig. 1 to 11.

Referring to fig. 1-4, the present utility model provides a laser welder that can split a beam 510 and perform wire sweep welding. The laser welding machine comprises the adjusting plate 100, wherein the outer contours of the upper surface and the lower surface of the adjusting plate 100 are rectangular, and the outer contours of the upper surface and the lower surface of the adjusting plate 100 are rectangular, so that the laser welding machine is convenient to process and is beneficial to arrangement of parts of the welding machine.

Along the length direction of the outer contour of the adjustment plate 100, one end of the adjustment plate 100 is connected to a laser welding machine. The side of the adjusting plate 100, which is away from the side of the adjusting plate 100, which is connected to the laser welding machine, is provided with a first light through hole 110. The adjusting plate 100 is provided with the first light through hole 110 on the side facing away from the laser welding machine, i.e. the side of the adjusting plate 100 connected with the laser welding machine is of a solid structure, so that the rigidity of the adjusting plate 100 is improved. Furthermore, the light beam 510 needs to pass through the first light-passing hole 110 in a direction perpendicular to the surface of the adjustment plate 100, and the first light-passing hole 110 is disposed at a far side from the welder, so that the arrangement of the light path module 500 is facilitated.

The opening of the first light-passing hole 110 is rectangular, the first light-passing hole 110 is arranged at the central position of the adjusting plate 100 along the width direction, the length direction of the rectangular opening of the first light-passing hole 110 is parallel to the length direction of the adjusting plate 100, the width direction of the rectangular opening of the first light-passing hole 110 is parallel to the width direction of the adjusting plate, and the wall surface of the first light-passing hole 110 is parallel to the light path transmission direction.

The first light through holes 110 are arranged to be rectangular, so that the first light through holes 110 are convenient to process, the first light through holes 110 are arranged at the central position of the adjusting plate 100 along the width direction, so that the possibility that the adjusting plate 100 deforms along the width direction is consistent, and the rigidity of the adjusting plate 100 is further guaranteed. The length direction of the opening rectangle of the first light passing hole 110 is parallel to the length direction of the adjusting plate 100, and the width direction of the opening rectangle of the first light passing hole 110 is parallel to the width direction of the adjusting plate, so that the first light passing hole 110 and the adjusting plate 100 can be processed simultaneously, and the light beam 510 with the rectangular cross section cut along the plane of the vertical direction of the light path is matched.

Referring to fig. 1 to 4, the outer contour of the mask 200 of the present utility model is rectangular, and when the mask 200 is connected to the adjusting plate 100, the length direction of the rectangle formed by the mask 200 is always equal to the length direction of the rectangle formed by the adjusting plate 100. The second light through holes 210 are arranged along the middle position of the rectangle formed by the mask plate 200, the opening of the second light through holes 210 is rectangular, the length direction of the rectangle formed by the opening of the second light through holes 210 is consistent with the length direction of the mask plate 200, and the width direction of the rectangle formed by the second light through holes 210 is consistent with the width direction of the mask plate 200.

The opening of the second light through hole 210 is set to be rectangular, the length of the rectangle presented by the opening of the second light through hole 210 is smaller than the length of the light beam 510 passing through the mask 200, and the width of the rectangle presented by the opening of the second light through hole 210 is smaller than the width of the light beam 510 passing through the mask 200, so that the shaping of the light beam 510 passing through the mask 200 by the second light through hole 210 is realized. The second light-passing hole 210 shapes the light beam 510 passing through the mask 200 into a light beam 510 having a rectangular cross section along a plane perpendicular to the light path, that is, the outline of the light beam 510 shaped by the mask 200 of the present utility model is rectangular. The light beam 510 with a rectangular cross section along the plane perpendicular to the light path has a smooth contour on the welding surface, which is convenient to regulate and control, and the smooth contour line ensures the welding precision.

The laser welding machine adopts the mask plate 200 to shape the light beam 510, and completes wire sweep welding in cooperation with the movement of the mobile platform 700.

In summary, the laser welding machine of the present utility model includes the adjusting plate 100 and the mask plate 200. The adjusting plate 100 is directly connected with the laser welding machine through the fourth positioning hole 140, and the mask plate 200 is connected to the adjusting plate 100, so that the position of the laser welding machine is indirectly fixed. In such a matching relationship, the arrangement of the adjusting plate 100 is adjusted so that the upper surface and the lower surface of the adjusting plate 100 are perpendicular to the optical path, and then the upper surface and the lower surface of the mask 200 are adjusted to be parallel to the adjusting plate 100, so that the upper surface and the lower surface of the mask 200 are perpendicular to the optical path. The adjusting plate 100 is provided with a first light through hole 110, the mask plate is provided with a second light through hole 210, and the side walls of the first light through hole 110 and the second light through hole 210 are parallel to the light path transmission direction. Along the optical path transmission direction, the first light-passing hole 110 has a first projection on a plane perpendicular to the optical path transmission direction, the second light-passing hole 210 has a second projection on a plane perpendicular to the optical path transmission direction, and the second projection is located inside the first projection. The light path sequentially passes through the first light-passing holes 110 on the adjusting plate 100 and then passes through the second light-passing holes 210 on the mask plate, and the opening length and width of the first light-passing holes 110 are both greater than the length and width of the light beams 510 for generating the light path, i.e. the first light-passing holes 110 do not have the shaping function of the light beams 510. The opening length and width of the second light-passing hole 210 are smaller than the length and width of the light beam 510 that generates the light path, that is, the second light-passing hole 210 shapes the light beam 510.

Considering that the light beam 510 is shaped by the second light through hole 210 and then slightly diverges when leaving the second light through hole 210, the closer the mask 200 having the second light through hole 210 is to the workpiece, the better. Because the heights of different workpieces are different, the height of the mask 200 needs to be flexibly adjusted. The mask plate 200 is mounted on the adjusting plate 100, the adjusting plate 100 is fixed on a laser welding machine, and the distance between the mask plate 200 and a workpiece can be adjusted only by adjusting the distance between the mask plate 200 and the adjusting plate 100. Therefore, the mask 200 is connected with the adjusting plate 100, so that the position of the mask 200 can be adjusted more conveniently, the vertical degree of the mask 200 to the light beam 510 can be adjusted, and the mask 200 with the second light through holes 210 with different opening sizes can be detached and replaced conveniently, thereby meeting the requirements of welding MiniLED chips with different sizes and improving the welding precision.

It should be appreciated that in other embodiments, in particular, to satisfy the spatial arrangement of the respective devices of the laser welder, the configuration of the laser welder may be more compact, the profile of the adjustment plate 100 may be configured in a triangle, oval or other various types of patterns, and the profile of the mask plate 200 may be configured in a triangle, oval or other various types of patterns.

It should be appreciated that in other embodiments, the first light-passing aperture 110 may be circular, triangular, or other various types of patterns, particularly, while ensuring that the light path is not blocked. The second light-transmitting aperture 210 may be circular, triangular, or any other type of pattern to conform to the shape of the light beam 510.

In order to complete the connection between the adjusting plate 100 and the mask plate 200, the adjusting plate 100 is provided with a first positioning hole 120, the mask plate 200 is provided with a second positioning hole 220, and a linear guide rail is arranged to penetrate through the first positioning hole 120 and the second positioning hole 220, so that the connection between the adjusting plate 100 and the mask plate 200 is finally achieved. Referring to fig. 2 to 5 and 7, the adjustment plate 100 is provided with a plurality of first positioning holes 120, the mask plate 200 is provided with a plurality of second positioning holes 220, and the first positioning holes 120 and the second positioning holes 220 are correspondingly arranged when viewed along a direction perpendicular to the surface of the adjustment plate 100 facing away from the mask plate 200, i.e., the line of sight is not blocked by the edges of the second positioning holes 220 or the first positioning holes 120 when viewed along a direction perpendicular to the surface of the adjustment plate 100 facing away from the mask plate 200.

The provision of the plurality of first positioning holes 120 and the plurality of second positioning holes 220 ensures the stability of the connection of the adjustment plate 100 and the mask plate 200. The first positioning holes 120 and the second positioning holes 220 are correspondingly arranged, and the connection of the adjusting plate 100 and the mask plate 200 is completed through the linear guide rail, so that the connection precision of the adjusting plate 100 and the mask plate 200 is ensured.

In practical use, when the shaped beam 510 is not matched with the size of the bonding pad 810, there is a problem of overlapping during the bonding process, so that different sized beams 510 need to be shaped according to different sized bonding pads 810.

By adopting the adjusting plate 100 and the mask plate 200 which are arranged in the mode, the mask plate 200 is convenient to detach, and the mask plate 200 with the second light through holes 210 with different sizes or different shapes can be conveniently replaced according to actual needs. Therefore, the laser welding machine can meet the diversification of wire sweep welding, namely wire sweep welding is carried out on welding pieces with different sizes and shapes, and the laser welding machine has the advantages of high production efficiency, convenient operation and low cost.

It should be noted that, the wire sweep welding refers to the laser welding machine of the present utility model, which adopts the moving platform 700 to drive the objective table 800 (the bonding pad 810 on the objective table 800 is fixed with the die in advance) to move reciprocally and successively along the x-axis and y-axis directions at the position acted by the optical path module 500, so as to realize the welding of the shaped beam 510 to the workpiece to be welded in a scanning manner. The scanning of the beam 510 can cover the entire area of the workpiece to be welded in conjunction with the reciprocal movement of the moving platform 700 in the x-axis and y-axis directions. For example, the shaped beam 510 is rectangular, the length direction of the rectangle is the y direction, the moving platform 700 moves along the x direction, the moving part makes the part with equal length to the shaped beam 510 to be acted on by the shaped beam 510 from beginning to end, then the moving platform 700 moves along the y direction, the moving platform 700 moves along the y direction for equal length to the rectangular shape of the shaped beam 510, then the moving platform 700 moves along the opposite direction of the x direction in the above step, and the moving part makes the other part with equal length to the shaped beam 510 to be acted on by the shaped beam 510. And (5) performing the steps repeatedly, so that the welding of the laser welding machine for covering the piece to be welded in a scanning mode can be completed. Because each moving path of the moving platform 700 in the welding process is a straight line, the welding mode performed by the laser welding machine of the present utility model is called wire sweep welding.

Referring to fig. 2 to 5, the first positioning holes 120 are disposed along the outline of the first light passing hole 110, respectively, beside four corners of the rectangle in which the outline of the first light passing hole 110 is formed, and the second positioning holes 220 are disposed along the outline of the second light passing hole 210, respectively, beside four corners of the rectangle in which the outline of the second light passing hole 210 is formed.

The first positioning holes 120 and the second positioning holes 220 are arranged in this way, so that the alignment of the first positioning holes 120 and the second positioning holes 220 is convenient, the connection between the adjusting plate and the mask plate 200 is easy, the number of the holes of the first positioning holes 120 is reasonable, and the rigidity of the adjusting plate 100 is ensured. Because the first positioning holes 120 are arranged along the circumference of the rectangular outline of the first light-passing hole 110, and the second positioning holes 220 are arranged along the circumference of the rectangular outline of the second light-passing hole 210, the parallelism of the mask plate 200 after being connected to the adjusting plate 100 is improved, and the connection stability of the mask plate 200 and the adjusting plate 100 is ensured.

It will be understood, of course, that in other embodiments, the first positioning hole 120 and the second positioning hole 220 may be disposed in plurality, and the first positioning hole 120 is not limited to being disposed circumferentially around the contour of the first light passing hole 110, and the second positioning hole 220 is not limited to being disposed circumferentially around the contour of the second light passing hole 210, so long as the position correspondence of the first positioning hole 120 and the second positioning hole 220 is satisfied.

Referring to fig. 2, 3 and 7, the first fastener 400 is a linear guide rail that cooperates with the linear bearing 410 and the sixth positioning hole 411 to complete the connection of the adjustment plate 100 and the mask plate 200. The linear bearings 410 are arranged around the linear guide rail, the sixth positioning holes 411 of the linear bearings 410 are arranged on two opposite sides of the axis of the linear guide rail, the adjusting plate 100 is provided with the fifth positioning holes 150 corresponding to the sixth positioning holes 411, wherein the sixth positioning holes 411 are through holes, the fifth positioning holes 150 are threaded holes, and the fixing of the adjusting plate 100 and the first fastening piece 400 is completed through threaded connection, so that the surface of the linear bearings 410 facing the adjusting plate 100 is attached to the surface of the adjusting plate 100 facing the linear bearings 410, and the verticality of the linear guide rail to the adjusting plate 100 and the stability of the assembly of the linear guide rail and the adjusting plate are improved.

One end of the linear guide rail, which is far away from the linear bearing 410, is fixedly connected with the mask plate 200, and the mask plate 200 is driven by the linear guide rail to change the position, so that the distance between the mask plate 200 and the adjusting plate 100 is conveniently adjusted, and the distance between the mask plate 200 and a workpiece is conveniently adjusted.

The linear guide rail deviates from the linear bearing 410 one end and accomplishes the connection of linear guide rail and mask 200 through threaded connection, and threaded connection's mode ensures the stability of linear guide rail and mask 200 connection on the one hand, and on the other hand is convenient to dismantle mask 200, is convenient for change the mask that has different sizes second light through hole 210 according to the welding demand of difference.

The second light through holes 210 of the mask plate 200 of the present utility model have a length of 50-150mm and a width of 5-15mm, and the first light through holes 110 of the adjustment plate 100 of the present utility model have a size of about twice the size of the second light through holes 210 of the mask plate 200. Of course, in other embodiments, to meet the welding requirements, the second light through holes 210 and the first light through holes 110 may be provided with other apertures.

The mask 200 shapes the laser, that is, the mask 200 blocks a part of the light beam 510, so that the other part of the light beam 510 passes through the second light through hole 210, that is, part of the laser directly irradiates the mask, so that the mask 200 is locally overheated, thereby causing deformation of the mask, reducing welding precision and even damaging the mask 200. In order to alleviate the impact on welding in such a case, i.e., to reduce the amount of deformation of the mask 200 during welding or to reduce the possibility of deformation of the mask 200 during welding, the mask 200 of the present utility model is provided with a water cooling system.

Referring to fig. 3, a water inlet 230 and a water outlet 240, and an exchange port 250 for communicating with a waterway are provided on a sidewall of the mask 200. The water inlet 230 is filled with cooling liquid, the water outlet 240 is used for discharging the cooling liquid, the exchange port 250 is communicated with a water path inside the mask plate 200, and the structures complete a cooling system of the mask plate 200, so that the whole mask plate 200 is cooled. Therefore, the mask plate of the utility model has smaller deformation in the welding process, the laser welding machine adopting the mask plate 200 of the utility model has higher precision, and the product welded by adopting the laser welding machine of the utility model has higher quality.

Referring to fig. 11, the mask 200 is provided with an auxiliary hole 270, the auxiliary hole 270 is disposed between the outline of the second light passing hole 210 and the outline of the mask 200, the auxiliary hole 270 penetrates the mask 200 in the thickness direction of the mask 200, one side of the auxiliary hole 270 near the outline of the mask 200 protrudes toward the outline of the mask 200, and one side of the auxiliary hole 270 near the second light passing hole 210 protrudes toward the outline of the second light passing hole 210. The auxiliary hole 270 thus arranged can transfer the deformation of the part of the second light-passing hole 210 caused by heating to the auxiliary hole 270, namely, the deformation of the second light-passing hole 210 caused by heating is relieved by stretching the auxiliary hole 270, so that the welding precision is further improved.

It can be understood that some Xu Fasan may be provided after the laser passes through the second light passing hole 210 of the mask 200, in order to improve welding accuracy, the shorter the distance between the mask 200 and the workpiece to be welded is, the better the distance between the mask 200 and the workpiece to be welded is, and the different welding heights are different, in order to conveniently adjust the distance between the mask 200 and the workpiece to be welded, referring to fig. 1, 2, 3 and 6, the fixing plate 300 is provided, the cross section of the fixing plate 300 along the thickness direction is rectangular, the fixing plate 300 is provided with the third positioning hole 310, the third positioning hole 310 is symmetrically arranged along the width direction of the fixing plate 300, the side wall of the mask 200 is provided with the first positioning groove 260, and the first positioning groove 260 and the third positioning hole 310 correspond, and the second fastener penetrates through the third positioning hole 310 and is connected with the first positioning groove 260, so as to fix the position of the mask 200 relative to the fixing plate 300. The fixing plate 300 is provided with the strip-shaped holes 320, the strip-shaped holes 320 are formed along the length direction of the fixing plate 300, the strip-shaped holes 320 are symmetrically formed along the width direction of the fixing plate 300, the side wall of the adjusting plate 100 is provided with the second positioning groove 130, the second positioning groove 130 corresponds to the strip-shaped holes 320, and the fixing of the adjusting plate 100 relative to the fixing plate 300 is achieved through the fact that the third fastening piece penetrates through the strip-shaped holes 320 and is connected with the second positioning groove 130.

Wherein, the first positioning groove 260 may be a screw groove, the second fastening member may be a screw, the second positioning groove 130 may be a screw groove, and the third fastening member may be a screw. The second fastening member passes through the third positioning hole 310 arranged in the fixing plate 300 and is then connected to the first positioning groove 260 of the mask plate 200, thereby achieving the fixation between the fixing plate 300 and the mask plate 200. The third fastener passes through the bar-shaped hole 320 arranged on the fixing plate 300 and is then connected to the second positioning groove 130 of the adjusting plate 100, so that the fixing of the fixing plate 300 and the adjusting plate 100 is realized, and the fixing plate 300 can move along the length direction of the bar-shaped hole 320 in the bar-shaped hole 320 because the third fastener does not press the fixing plate 300 and the adjusting plate 100 after the third fastener loosens due to the existence of the bar-shaped hole 320, namely, the third fastener can move along the length direction of the bar-shaped hole 320 when the third fastener is kept motionless. When the third fastening member is loosened (the third fastening member is still connected with the adjusting plate 100, but no pressing action is generated between the adjusting plates 100 of the fixing plate 300), the mask plate 200 can move along the length direction of the bar-shaped holes 320 along with the fixing plate 300 because the mask plate 200 and the fixing plate 300 remain fixed under the action of the second fastening member. Because the length direction of the bar-shaped hole 320 is parallel to the optical path transfer direction, the distance between the mask plate 200 and the piece to be welded is changed while the mask plate 200 moves along the length direction of the bar-shaped hole 320 along with the fixing plate 300.

By arranging the fixing plate 300, the distance between the mask plate 200 and the piece to be welded is changed on the premise that the position of the adjusting plate 100 is fixed. In the process of adjusting the distance from the mask plate 200 to the piece to be welded, the mask plate 200 moves mainly along the length direction of the strip-shaped hole 320, namely, moves perpendicular to the direction of the light path, and in the process, the parallelism degree between the mask plate 200 and the adjusting plate 100 can be guaranteed well. The fixing plate 300 can drive the mask plate 200 to move only by loosening the third fasteners which are symmetrically arranged, so that the distance between the mask plate 200 and the adjusting plate 100, namely the distance between the mask plate 200 and a piece to be welded, can be conveniently and rapidly adjusted on the premise of better maintaining the parallelism between the mask plate 200 and the adjusting plate 100.

Along the optical path transmission direction, the outer contour of the adjusting plate 100 has a third projection on a plane perpendicular to the optical path transmission direction, and the outer contour of the mask 200 has a fourth projection on a plane perpendicular to the optical path transmission direction, wherein the fourth projection is located inside the third projection.

Referring to fig. 1 to 5, it can be understood that, along the optical path transmission direction, the projection area of the outer contour of the adjusting plate 100 on the plane perpendicular to the optical path transmission direction is larger than the projection area of the outer contour of the mask plate 200 on the plane perpendicular to the optical path transmission direction, that is, the rectangular surface area of the outer contour of the adjusting plate 100 is larger than the rectangular surface area of the outer contour of the mask plate 200.

The surface area of the rectangle of the outer contour of the adjusting plate 100 is larger than that of the rectangle of the outer contour of the mask plate 200, so that the mask plate 200 is convenient to be connected to the adjusting plate 100. Meanwhile, since the adjustment plate 100 is required to be directly connected to the laser welder body, it is convenient for the adjustment plate 100 to be connected to the laser welder.

Referring to fig. 1 and 8, the laser welder further includes an optical path module 500, and the optical path module 500 is located at a side of the adjustment plate 100 facing away from the mask plate 200.

The light path module 500 emits a light beam 510 for welding, the light beam 510 is perpendicular to the adjusting plate 100 and the mask plate 200, the light beam 510 passes through the first light through hole 110 arranged on the adjusting plate 100, and then is shaped by the second light through hole 210 arranged on the mask plate 200 to act on the piece to be welded.

It will be appreciated that the present utility model employs a flat top beam 510 in order to improve the weld quality. In other embodiments, the beam 510 characteristics employed may be sufficient to meet the welding requirements.

Referring to fig. 1 and 9, the laser welder further includes a machine vision system 600, the machine vision system 600 being located beside the light path module 500, the machine vision system 600 locating a mark point on the weld plate 810 for monitoring positional parameters during welding.

It will be appreciated that, as an embodiment, the machine vision system 600 is composed of a CCD camera 620 and a manipulator 610, and the position and angle of the CCD camera 620 are flexibly adjusted by the manipulator 610, so as to realize more comprehensive monitoring of the welding process.

Referring to fig. 1 and 10, the laser welder further includes a stage 800, a moving stage 700, and a marble stage. The bonding pads 810 for welding by a laser welder are arranged on the object stage 800, the bonding pads 810 are subjected to die bonding in advance, and the laser welder selects the bonding pads 810 with corresponding sizes according to the number of chips and the chip size.

Stage 800 uses pneumatic suction to suction pads 810 as described above, and pneumatic suction is employed to facilitate replacement of pads 810.

The object stage 800 of the utility model is provided with a preheating device for preheating the bonding pad 810 before the laser welding machine starts welding, so that the bonding pad 810 can be prevented from deforming, and the solder paste on the bonding pad 810 can be pre-melted. The solder paste is fully melted, so that the temperature gradient of the solder paste can be reduced, and the welding quality and yield are improved.

Referring to fig. 1, the whole laser welder uses a marble platform as a base station to ensure the stability of the laser welder.

Referring to fig. 1, according to the coordinate system of fig. 1, a moving stage 700 is movable in a direction in which an x-axis is located and a direction in which a y-axis is located by an x-axis adjustment stage 710 and a y-axis adjustment stage 720. Specifically, the x-axis adjusting platform 710 is disposed on the marble platform, the y-axis adjusting platform 720 is disposed on the x-axis adjusting platform 710, the movement of the x-axis adjusting platform 710 directly drives the movement of the y-axis adjusting platform 720, the movement of the moving platform 700 is disposed on the y-axis adjusting platform 720, and the movement of the y-axis adjusting platform 720 directly drives the movement of the moving platform 700, so that the moving platform 700 moves along the direction of the x-axis and the direction of the y-axis under the combined action of the x-axis adjusting platform 710 and the y-axis adjusting platform 720.

The surface of the x-axis adjustment platform 710 facing the moving platform 700 is in a wedge-shaped structure, and two sides of the y-axis adjustment platform 720 are inserted into the wedge-shaped structure, so that the y-axis adjustment platform 720 and the x-axis adjustment platform 710 are more stably matched, and the y-axis adjustment platform 720 is convenient to detach. The side of the x-axis adjusting platform 710, which is close to the marble platform, is provided with a sliding rail, and the x-axis adjusting platform 710 is matched with the sliding rail to drive the y-axis adjusting platform 720 to move along the x-axis direction. The y-axis adjusting platform 720 is provided with a sliding rail, and the movement of the moving platform 700 along the y-axis direction is driven under the action of the sliding rail. Thus, motion in the x-axis direction and motion in the y-axis direction are achieved by motion stage 700 under the combined action of x-axis adjustment stage 710 and y-axis adjustment stage 720.

In the embodiment of the present utility model, specifically, the shaped beam 510 is rectangular, the length direction of the rectangle is along the y-axis direction, the x-axis adjustment platform 710 moves along the x-axis direction, when the x-axis adjustment platform 710 moves along the x-axis direction, the y-axis adjustment platform 720 is driven to move along the x-axis direction, so as to drive the moving platform 700 to move along the x-axis direction, the part of the part to be welded, which is equal to the shaped beam 510, is sequentially acted on by the shaped beam 510 from beginning to end along the x-axis direction, then the y-axis adjustment platform 720 adjusts the moving platform 700 to move along the y-axis direction, the distance of the moving platform 700 moving along the y-axis direction is equal to the length of the rectangle formed by the shaped beam 510, and then the moving platform 700 moves along the opposite direction of the x-axis direction in the above steps, and the moving part of the part to be welded, which is equal to the shaped beam 510, is acted on by the shaped beam 510. And (3) repeatedly performing the steps, so that the wire sweep welding of the laser welding machine for covering the piece to be welded in a scanning mode can be completed. And the MiniLED is welded by adopting a wire sweep, so that the processing efficiency is greatly improved.

It will be appreciated that the laser welder of the present utility model is provided with a temperature control meter 900, the temperature control meter 900 being mounted on a fixed platform for monitoring the temperature during welding and adjusting the mechanism in time.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A laser welder capable of parting a beam and performing a wire sweep weld, comprising:

the adjusting plate is provided with a first light-transmitting hole;

the mask plate is provided with a second light through hole, a light path passes through the adjusting plate and the mask plate in sequence, a first projection is arranged on a plane perpendicular to the light path transmission direction of the first light through hole along the light path transmission direction, a second projection is arranged on a plane perpendicular to the light path transmission direction of the second light through hole, the second projection is positioned in the first projection, the mask plate is connected with the adjusting plate, and the surface of the adjusting plate facing the mask plate is parallel to the surface of the mask plate facing the adjusting plate;

the cross section of fixed plate along thickness direction is the rectangle, the fixed plate sets up the bar hole, the bar hole is followed fixed plate length direction opening, the fixed plate is connected the regulating plate with the mask plate.

2. The laser welder of claim 1, further comprising a first fastener, wherein the adjustment plate defines a first locating hole, wherein the mask defines a second locating hole, wherein the second locating hole corresponds to the first locating hole, and wherein the first fastener extends through the first locating hole and the second locating hole.

3. A laser welder as in claim 2 wherein the first locating holes are circumferentially arranged around the first light passing holes and the second locating holes are circumferentially arranged around the second light passing holes.

4. The laser welder of claim 1, wherein the mask further comprises a water inlet, a water outlet, and a water exchange port for opening a water path.

5. The laser welder of claim 1, wherein an end of the adjusting plate remote from the first light passing hole is connected to the laser welder along a length direction of the adjusting plate.

6. The laser welding machine according to claim 1, further comprising a second fastener and a third fastener, wherein the fixing plate is provided with a third positioning hole, the side wall of the mask plate is provided with a first positioning groove, the second fastener penetrates through the third positioning hole and is connected with the first positioning groove, the side wall of the adjusting plate is provided with a second positioning groove, and the third fastener penetrates through the strip-shaped hole and is connected with the second positioning groove.

7. The laser welding machine according to claim 1, wherein an auxiliary hole is arranged between the second light-passing hole contour line and the mask plate outer contour line, the auxiliary hole penetrates through the mask plate in the thickness direction of the mask plate, one side of the auxiliary hole, which is close to the mask plate outer contour line, protrudes towards the mask plate outer contour line, and one side of the auxiliary hole, which is close to the second light-passing hole contour line, protrudes towards the second light-passing hole contour line.

8. A laser welder as claimed in claim 1, wherein along the light path transfer direction, the adjusting plate outer contour has a third projection on a plane perpendicular to the light path transfer direction, and the mask plate outer contour has a fourth projection on a plane perpendicular to the light path transfer direction, the fourth projection being located inside the third projection.

9. The laser welder of claim 1, further comprising:

the light path module is positioned at one side of the adjusting plate, which is away from the mask plate, and emits a light beam forming the light path, wherein the light beam is a flat-top light beam;

the machine vision system comprises a CCD camera positioned beside the light path module;

a stage, which is used for placing a welding pad for welding of the laser welding machine;

a mobile platform, the mobile platform housing the stage;

and the marble platform is arranged on the movable platform.