CN220427147U - Laser welding machine - Google Patents

Abstract

The utility model discloses a laser welding machine. The laser welding machine comprises a frame, a welding assembly and a rotating assembly, wherein the welding assembly comprises a laser welding head connected to the frame, and the laser welding head is used for welding a workpiece to be machined; the rotating assembly comprises a rotating seat and a plurality of welding jigs, the rotating seat is rotatably connected to the frame, the welding jigs are arranged on the rotating seat, and the welding jigs are used for placing workpieces to be machined; the frame has welding position and unloading position, receives the drive of rotation seat, and when any welding jig rotated to the welding position, there was another welding jig to rotate to the unloading position at least. The laser welding machine of this application embodiment has shortened down time, need not long-time shut down and waits for the operation workman to go up the unloading, has improved the time utilization ratio of laser welding machine for laser welding efficiency promotes greatly.

Description

Laser welding machine

Technical Field

The utility model relates to the field of laser welding, in particular to a laser welding machine.

Background

With the development of vehicle intellectualization, the use scenes of the vehicle-mounted cameras are more and more, for example, the cameras can be utilized to shoot the driving conditions of roads for driving recording; the camera can be used for assisting reversing, side parking and the like. For this reason, the demand for vehicle-mounted cameras is increasing.

At present, the casing of on-vehicle camera divide into upper and lower two parts, need through laser welding with connect as an organic whole structure. After one vehicle-mounted camera is welded by the existing laser welding machine, an operator needs to stop and wait for unloading the welded part and replacing the part to be welded, then the next vehicle-mounted camera can be welded, the time for stopping and waiting is long, and the production efficiency of the laser welding machine is low.

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, long-time stopping is not needed to wait for operators to feed and discharge, the stopping time of the laser welding machine is shortened, the time utilization rate of the laser welding machine is improved, and the laser welding efficiency is greatly improved.

According to an embodiment of the first aspect of the present utility model, a laser welding machine includes:

a frame;

the welding assembly comprises a laser welding head connected to the frame, and the laser welding head is used for welding the workpiece to be machined;

the rotating assembly comprises a rotating seat connected to the frame in a rotating way and a plurality of welding jigs arranged on the rotating seat, and the welding jigs are used for placing the workpieces to be processed;

the frame is provided with a welding position and a blanking position, and is driven by the rotating seat, and when any one of the welding jigs rotates to the welding position, at least one of the other welding jigs rotates to the blanking position.

The laser welding machine provided by the embodiment of the utility model has at least the following beneficial effects:

according to the laser welding machine, the plurality of welding jigs are arranged, so that the laser welding machine can weld a workpiece to be welded on one of the welding jigs, an operator can perform feeding and discharging operation on the other welding jig, after the laser welding machine finishes welding a workpiece to be welded, the next workpiece to be welded can be driven to move to a welding position through rotation of the rotating seat, long-time stopping waiting operation workers are not needed for feeding and discharging, the stopping time of the laser welding machine is shortened, the time utilization rate of the laser welding machine is improved, and the laser welding efficiency is greatly improved.

According to some embodiments of the utility model, the laser welding head is capable of moving in a horizontal plane relative to the frame, the welding jig is rotationally connected with the rotating seat, the welding jig is driven to rotate to the welding position in response to the rotating seat, and the laser welding head moves and cooperates with the rotation of the welding jig relative to the rotating seat to weld the circumference of the workpiece to be machined.

According to some embodiments of the utility model, the laser welding head is connected with the frame through a cross straight line module, the rotating seat is connected with the frame through a DD motor, and the welding jig is connected with the rotating seat through the DD motor.

According to some embodiments of the utility model, the welding jig comprises a limiting member comprising a moving jaw and a fixed jaw, the moving jaw and the fixed jaw being disposed opposite each other, and the moving jaw being movable toward the fixed jaw.

According to some embodiments of the utility model, the welding jig further comprises a pressing member disposed above the limiting member, and the pressing member is movable close to the limiting member to press the workpiece to be processed.

According to some embodiments of the utility model, the pressing piece comprises a pressing head for abutting against the workpiece to be processed, the limiting piece further comprises a base for supporting the workpiece to be processed, and a water cooling channel is arranged in the pressing head and the base.

According to some embodiments of the utility model, the laser welding head comprises a semiconductor laser for emitting semiconductor laser light and a fiber laser for emitting fiber laser light, the optical paths of which are capable of being coincident for welding.

According to some embodiments of the utility model, the welding assembly further comprises an air-cooled member disposed above the laser welding head, the air-cooled member comprising an air-out portion extending toward the laser welding head to be proximate to the welding area of the workpiece to be welded.

According to some embodiments of the utility model, the welding assembly comprises a dust hood sleeved at the outlet end of the laser welding head, a mounting hole for penetrating the laser welding head and a dust collection opening for dust collection are arranged on the dust hood, a dust collection cavity communicated with the dust collection opening is defined in the dust hood, and a dust collection pipeline communicated with the dust collection cavity is further arranged on the dust hood.

According to some embodiments of the utility model, a partition is disposed between adjacent welding jigs to separate the welding jigs, and the height of the partition is not lower than the height of the welding jigs.

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 utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a laser welder (with a cabinet hidden) according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

FIG. 3 is an enlarged schematic view of region B of FIG. 1;

FIG. 4 is a schematic view of a welding assembly according to an embodiment of the present utility model;

FIG. 5 is a side view of a welding assembly and a rotating assembly according to an embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of region C of FIG. 5;

fig. 7 is a schematic structural diagram of a laser welding machine according to an embodiment of the present utility model.

Reference numerals:

a frame 100;

a welding assembly 200; a laser welding head 210; a semiconductor laser 211; a fiber laser 212; a cross straight line module 220; an air cooling member 230; an air outlet 231; a dust hood 240; a mounting hole 241; a dust suction port 242; a dust suction duct 243;

a rotating assembly 300; a rotating base 310; a welding jig 320; a stopper 321; moving the jaw 3211; a fixed jaw 3212; a base 3213; a pressing member 322; a ram 3221; a first DD motor 330; a second DD motor 340; a separator 350; a moving seat 360;

a work piece 400; an upper case 410; a lower case 420;

a calibration piece 500;

and a cabinet 600.

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 references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating 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.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The application provides a laser welding machine, this laser welding machine includes frame 100, welding set 200 and rotating set 300, and welding set 200 and rotating set 300 all set up on frame 100. The welding assembly 200 includes a laser welding head 210, the laser welding head 210 being coupled to the frame 100. The rotating assembly 300 includes a rotating base 310 and a plurality of welding jigs 320 disposed on the rotating base 310, where the welding jigs 320 are used for placing a workpiece 400, and the workpiece 400 may be an upper and lower housing of a vehicle-mounted camera, and are connected into an integral structure by laser welding. The rotating seat 310 is rotatably connected with the frame 100, and can drive the welding jig 320 on the rotating seat 310 to rotate.

The frame 100 has a welding position and a blanking position, and the welding position and the blanking position are disposed along a circumferential direction of the rotating base 310. Thus, the rotating base 310 can drive the welding jig 320 to rotate to the welding position, so that the welding assembly 200 can perform laser welding on the workpiece 400 to be processed on the welding jig 320, and the rotating base 310 can also drive the welding jig 320 to rotate to the blanking position, so as to take down the welded workpiece 400 to be processed and replace the workpiece 400 to be processed which is not welded yet. It is understood that when any one of the welding jigs 320 is in the welding position, at least one of the remaining welding jigs 320 is in the blanking position, so as to facilitate blanking.

In the embodiment shown in fig. 1, two welding jigs 320 are disposed on the rotating base 310, and it is understood that the two welding jigs 320 are uniformly distributed on the rotating base 310 along the circumferential direction of the rotating base 310, that is, the two welding jigs 320 are located on the same diameter of the rotating base 310. As shown in fig. 1, the welding position of the stand 100 is disposed at a side of the rotating base 310 close to the welding assembly 200, and the discharging position is disposed at a side of the rotating base 310 far from the welding assembly 200. When any one of the two welding jigs 320 is located at the welding position, the other one is located at the blanking position, so that when one welding jig 320 is used for welding, the other welding jig 320 is used for feeding and blanking, after the welding is completed, the welding jig 320 located at the blanking position can be rotated to the welding position for welding, and the welding jig 320 located at the welding position is rotated to the blanking position for replacing the workpiece 400 to be machined. It is understood that for embodiments where three, four, or more welding jigs 320 are provided, a plurality of blanking positions may be provided.

Based on the above, the laser welding machine of this application embodiment is through setting up a plurality of welding jig 320 to make the laser welding machine wait for the machined part 400 to weld on one of them welding jig 320, the operation workman can go up unloading operation to another welding jig 320, so that the laser welding machine can be after the welding of accomplishing one wait for machined part 400, can be through the rotation drive of rotating seat 310 next wait for machined part 400 to remove to the welding position, thereby shortened the downtime of laser welding machine, need not long-time shutdown wait for the operation workman to go up the unloading, improved the time utilization ratio of laser welding machine, make laser welding efficiency promote greatly.

It is understood that the laser welding head 210 may be fixedly connected to the frame 100, and after the welding jig 320 rotates to the welding position, the laser welding head 210 performs spot welding or performs circumferential welding of the columnar workpiece 400 in cooperation with rotation of the welding jig 320. The laser welding head 210 may also be movably connected to the frame 100 by a mechanical arm, so that the laser welding head 210 has a higher degree of freedom, and can perform more complex welding according to specific requirements.

In some embodiments, as shown in fig. 3, the welded portion of the workpiece 400 is prismatic and requires welding in the circumferential direction of the workpiece 400. For this purpose, as shown in fig. 5, the laser welding head 210 can be moved in a horizontal plane with respect to the frame 100, so that the laser welding head 210 can adjust the distance from the workpiece 400 to be processed, so that the welding area of the workpiece 400 is always within the laser focal length. The welding jig 320 is rotatably connected to the rotating base 310, and it is understood that the workpiece 400 to be processed is disposed at the rotation center of the welding jig 320, so as to be capable of coaxially rotating with the rotating base 310. After the rotating base 310 drives the welding jig 320 to rotate to the welding position, the welding jig 320 rotates relative to the rotating base 310, and the laser welding head 210 continuously moves to weld the circumference of the workpiece 400.

In a further embodiment, as shown in fig. 4, the laser welding head 210 is disposed on a cross line module 220, and is connected to the frame 100 through the cross line module 220. The cross straight line module 220 has two degrees of freedom in the horizontal plane in the mutually perpendicular directions, and can accurately adjust the position of the laser welding head 210. As shown in fig. 5, the rotating seat 310 is connected with the frame 100 through a first DD motor 330 (direct drive), which is also called a torque motor, a direct drive motor, etc., and has the characteristics of low rotation speed and large torque, and can be directly connected with the rotating seat 310, thereby realizing precise regulation and control of the rotation angle of the rotating seat 310, and ensuring welding precision. Similarly, the welding jig 320 is connected to the rotating base 310 through a second DD motor 340.

In some embodiments, the welding fixture 320 further includes a limiting member 321, as shown in fig. 2 and 3, the limiting member 321 includes a moving jaw 3211 and a fixed jaw 3212, the moving jaw 3211 and the fixed jaw 3212 are oppositely disposed, and the moving jaw 3211 is often connected with a driving device, and can drive the moving jaw 3211 to move toward the fixed jaw 3212, so as to clamp and position the workpiece 400 to be machined between the moving jaw 3211 and the fixed jaw 3212. It can be understood that in the embodiment shown in fig. 3 and fig. 5, since the area to be welded of the workpiece 400 is in a prismatic structure, as shown in fig. 2 and fig. 3, two moving clamping jaws 3211 and two fixing clamping jaws 3212 are respectively disposed on four sides of the prismatic structure, the moving clamping jaws 3211 and the fixing clamping jaws 3212 are disposed in a two-to-two opposite manner, each clamping jaw abuts against one side of the prismatic structure, the fixing clamping jaws 3212 form an L-shaped positioning reference edge, and after the moving clamping jaws 3211 drive the workpiece 400 to abut against the fixing clamping jaws 3212, the workpiece 400 is positioned. In other embodiments, if the workpiece 400 is cylindrical, two, four or other numbers of clamping jaws may be provided, and the clamping jaws have arc-shaped clamping heads capable of being abutted against the outer peripheral surface of the cylindrical workpiece 400 to achieve clamping positioning.

In a further embodiment, the welding fixture 320 further includes a pressing member 322, where the pressing member 322 is disposed above the limiting member 321, and in the embodiment shown in fig. 2, the pressing member 322 is slidably connected to the moving seat 360, and the moving seat 360 is disposed on the rotating seat 310 of the welding fixture 320, and the pressing member 322 can move up and down relative to the moving seat 360, so that, after the limiting member 321 clamps the workpiece 400, the pressing member 322 can move down to abut against the workpiece 400, so that the upper casing 410 and the lower casing 420 of the workpiece 400 tightly abut against each other, thereby avoiding the welding failure caused by the deviation of the upper casing and the lower casing in the welding process.

Further, the pressing piece 322 comprises a pressing head 3221 for being abutted to the workpiece 400, a water cooling channel is arranged in the pressing head 3221, the limiting piece 321 comprises a base 3213 for supporting the workpiece 400, the water cooling channel is also arranged in the base 3213, the pressing head 3221 and the base 3213 are made of materials with higher heat conductivity coefficients such as copper, heat of the workpiece 400 can be quickly absorbed, and the influence of the welding generated high Wen Duidai workpiece 400 is eliminated.

It should be noted that, in the embodiment of the present application, the workpiece 400 is a vehicle-mounted camera with a prismatic structure of the lower housing 420 and a cylindrical structure of the upper housing 410, and the area to be welded is a prismatic structure. Referring specifically to fig. 3 and 6, the welding device comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are required to be welded circumferentially in a welding process so as to form an integral structure. The prism structure shown in fig. 2 is a calibration piece 500 for calibrating concentricity of the indenter 3221 and the workpiece 400 to be processed.

In some embodiments, the laser welding head 210 includes a semiconductor laser 211 and a fiber laser 212, the semiconductor laser 211 is capable of emitting semiconductor laser light, the semiconductor laser welding process has a stable molten pool, the welding spatter is small, and a smooth, even, smooth appearance can be obtained, but the penetrating power is insufficient. The fiber laser 212 can emit fiber laser, and the fiber laser welding has deeper penetration and narrower welding bead, but the key hole fluctuation in the welding process is large, the splashing in the welding process is large, the uniformity of the welding seam is general, and the welding appearance is not ideal.

Therefore, as shown in fig. 4, in the embodiment of the present application, by combining the process characteristics of the conventional semiconductor laser 211 and the fiber laser 212 during welding, and fully utilizing the advantages of both during welding, the laser emitted by both are emitted through the same composite laser head and focused to the same point for welding. In the welding process, the semiconductor laser is mainly used for preheating and stabilizing a molten pool to obtain a smooth welding appearance; fiber lasers are used to obtain the welding depth required by the process. Therefore, the laser welding head 210 has the advantages of high energy utilization rate, stable keyhole, less air holes, less hot cracks, less welding spatter, good weld forming quality and the like.

In some embodiments, as shown in fig. 3 to 6, the welding assembly 200 further includes an air cooling member 230, the air cooling member 230 is disposed above the laser welding head 210, and a ventilation duct is disposed inside the air cooling member 230, where one end of the ventilation duct is connected to the fan, and the other end extends toward the injection end of the laser welding head 210. At the emission end of the laser welding head 210, the air-cooling member 230 is provided with an air outlet 231, and the air outlet 231 extends toward the laser welding head 210 to be close to the welding area of the workpiece 400. Therefore, in the welding process of the workpiece 400, besides the upper end and the lower end of the workpiece 400 are subjected to the water cooling effect, the air outlet 231 of the air cooling member 230 can also blow out the air flow so as to reduce the temperature on the workpiece 400. It will be appreciated that in the embodiment shown in fig. 3 and 6, in order to avoid that the blown air of the air outlet 231 influences the cooling rate of the molten pool of the welding area, for this purpose the air outlet of the air outlet 231 is being provided for the workpiece 400 to be machined.

In some embodiments, the welding assembly 200 includes a dust hood 240, where the dust hood 240 is sleeved on the emission end of the laser welding head 210, and as shown in fig. 3 and 6, the dust hood 240 is tapered, and the outer diameter of the dust hood 240 gradually increases along the emission direction of the laser. The dust hood 240 includes an outer housing and an inner housing defining a dust chamber that communicates with an external negative pressure source through a dust suction duct 243. The dust hood 240 is provided with a through mounting hole 241, and the laser welding head 210 is provided through the mounting hole 241. The dust collection opening 242 for dust collection is arranged on the inner shell of the dust collection cover 240, and the dust collection opening 242 is communicated with the dust collection cavity and can absorb dust generated in the welding process. As shown in fig. 3, the inner housing is provided with a plurality of dust suction openings 242, and the air flow in the dust suction openings 242 is collected in two dust suction pipes 243 and discharged.

In some embodiments, a spacer 350 is disposed between adjacent welding jigs 320 to separate the welding jigs 320, and the height of the spacer 350 is not lower than the height of the welding jigs 320. Taking the embodiment shown in fig. 1 and fig. 5 as an example, the two welding jigs 320 are separated by the partition plate 350, so as to avoid the welding slag from splashing to the discharging position to scald operators in the welding process, and the arrangement of the partition plate 350 improves the welding safety of the laser welding machine.

In some embodiments, as shown in fig. 7, which is a schematic structural diagram of the whole laser welder, the laser welder further includes a cabinet 600, a tri-color lamp, a dual-start switch, a safety grating, etc., where the cabinet is covered on the welding assembly 200 and the rotating assembly 300 to avoid dust in the external environment from polluting the laser generator. The three-color lamp is used for indicating the operation state of the laser welding machine. As shown in fig. 7, when the welding assembly 200 moves to the blanking position, the welding assembly is exposed to the cabinet 600 for the operator to replace the workpiece 400. The dual start switch needs to be triggered by the left button and the right button simultaneously to send out a start signal of the operation of the laser welding machine, so that the hands of an operator can be ensured to leave the blanking position when the dual start switch is started, and the hands of the operator are prevented from being injured by the impact when the rotating seat 310 rotates.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model. Furthermore, embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

Claims (10)

1. Laser welding machine for welding a workpiece (400), characterized by comprising:

a frame (100);

-a welding assembly (200), the welding assembly (200) comprising a laser welding head (210) connected to the frame (100), the laser welding head (210) being for welding the work piece (400);

the rotating assembly (300) comprises a rotating seat (310) rotatably connected to the frame (100) and a plurality of welding jigs (320) arranged on the rotating seat (310), wherein the welding jigs (320) are used for placing the to-be-machined piece (400);

the frame (100) is provided with a welding position and a blanking position, driven by the rotating seat (310), and when any one of the welding jigs (320) rotates to the welding position, at least one of the other welding jigs (320) rotates to the blanking position.

2. The laser welding machine of claim 1, wherein the laser welding head (210) is movable in a horizontal plane relative to the frame (100), the welding jig (320) is rotationally coupled to the rotational mount (310), and the laser welding head (210) moves and engages rotation of the welding jig (320) relative to the rotational mount (310) to weld the circumference of the workpiece (400) in response to the rotational mount (310) driving rotation of the welding jig (320) to the welding position.

3. The laser welding machine according to claim 2, wherein the laser welding head (210) is connected to the frame (100) by a cross-shaped linear module (220), the rotating base (310) is connected to the frame (100) by a first DD motor (330), and the welding jig (320) is connected to the rotating base (310) by a second DD motor (340).

4. The laser welding machine according to claim 1, wherein the welding jig (320) comprises a limiting member (321), the limiting member (321) comprises a movable jaw (3211) and a fixed jaw (3212), the movable jaw (3211) and the fixed jaw (3212) are arranged opposite each other, and the movable jaw (3211) is movable towards the fixed jaw (3212).

5. The laser welding machine according to claim 4, wherein the welding jig (320) further comprises a pressing member (322), the pressing member (322) being disposed above the limiting member (321), the pressing member (322) being movable close to the limiting member (321) to press the workpiece (400).

6. The laser welding machine according to claim 5, wherein the pressing member (322) includes a pressing head (3221) for abutting against the workpiece (400), the stopper (321) further includes a base (3213) for supporting the workpiece (400), and water-cooling passages are provided inside the pressing head (3221) and the base (3213).

7. The laser welder according to claim 1, characterized in that the laser welding head (210) comprises a semiconductor laser (211) for emitting semiconductor laser light and a fiber laser (212) for emitting fiber laser light, the optical paths of which can be coincident for welding.

8. The laser welding machine of claim 1, wherein the welding assembly (200) further comprises an air-cooled member (230), the air-cooled member (230) being disposed above the laser welding head (210), the air-cooled member (230) comprising an air-out portion (231), the air-out portion (231) extending toward the laser welding head (210) to be proximate to the welding area of the workpiece (400).

9. The laser welding machine according to claim 1, wherein the welding assembly (200) comprises a dust hood (240), the dust hood (240) is sleeved at the emission end of the laser welding head (210), a mounting hole (241) for penetrating the laser welding head (210) and a dust collection opening (242) for dust collection are arranged on the dust hood (240), a dust collection cavity communicated with the dust collection opening (242) is defined in the dust hood (240), and a dust collection pipeline (243) communicated with the dust collection cavity is further arranged on the dust hood (240).

10. The laser welding machine according to claim 1, wherein a spacer (350) is provided between adjacent welding jigs (320) to separate the welding jigs (320), and a height of the spacer (350) is not lower than a height of the welding jigs (320).