Five-axis laser welding machine

Abstract

The utility model belongs to the technical field of welding devices, and particularly discloses a five-axis laser welding machine which comprises a placing table, a laser welding gun, an up-down rotating device, a horizontal rotating device and an X-axis, Y-axis and Z-axis moving device. The horizontal rotating device can drive the up-down rotating device and the laser welding gun to rotate on the horizontal plane, the XYZ-axis moving device can drive the horizontal rotating device, the up-down rotating device and the laser welding gun to synchronously move along the X axis, the Y axis and the Z axis, and the XYZ-axis moving device is arranged on the containing table. Therefore, the gun head of the laser welding gun can rotate in a three-dimensional space in a three-dimensional mode, true five-axis position adjustment is achieved, the device adapts to the to-be-welded part which is in a special shape and is uneven in welding position, multi-angle welding can be conducted on the to-be-welded part placed on the placing table, manual work can be replaced, the production efficiency is further improved, and the production cost is reduced. The welding quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a five-axis laser welding machine. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source. With industrial development, various types of hardware parts have emerged, with diverse shapes and uneven welding surfaces, thus placing high demands on welding machines. However, currently available welding machines, such as the five-axis dual-platform exchange laser welding machine with publication number CN 215468819 U, as shown in its publication details and accompanying drawings, only utilize the XYZ axes to achieve horizontal and vertical movement of the laser welding torch. This makes it difficult for the laser welding torch to weld oddly shaped or uneven parts, often requiring manual adjustment of the workpiece's angle. This results in low production efficiency, high production costs, and poor weld quality due to the limited reach of the laser welding torch. Utility Model Content

[0003] In order to overcome the defects of the existing technology, this utility model provides a five-axis laser welding machine.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a five-axis laser welding machine, including a placement table, a laser welding gun, an up-and-down rotating device, a horizontal rotating device, and an XYZ axis moving device. The up-and-down rotating device can drive the laser welding gun to rotate up and down around a horizontal line. The horizontal rotating device can drive the up-and-down rotating device and the laser welding gun to rotate in a horizontal plane. The XYZ axis moving device can drive the horizontal rotating device, the up-and-down rotating device, and the laser welding gun to move synchronously along the X-axis, Y-axis, and Z-axis. The XYZ axis moving device is disposed on the placement table.

[0005] As a further embodiment, the horizontal rotation device includes a hanger connected to the output end of the XYZ axis moving device, a connecting column mounted at one end of the hanger, and a first drive mechanism mounted on the hanger. The hanger is placed horizontally, the connecting column is located below the hanger and is vertically arranged, and the top end of the connecting column is rotatably connected to the end of the hanger away from the XYZ axis moving device. The bottom end of the connecting column is connected to the upper and lower rotation devices. The first drive mechanism can drive the connecting column to rotate about the center line of the connecting column as the axis.

[0006] As a further embodiment, the first drive mechanism includes a first servo motor and a first hollow rotating platform respectively mounted on the hanger. The input end of the first hollow rotating platform is drivenly connected to the first servo motor, and the output end of the first hollow rotating platform is drivenly connected to the connecting column.

[0007] As a further embodiment, the up-and-down rotating device includes a second driving mechanism, a first connecting seat and a second connecting seat rotatably connected, the bottom end of the connecting column being fixedly connected to the first connecting seat, the second driving mechanism being installed on one side of the first connecting seat, and the second driving mechanism being able to drive the second connecting seat to rotate relative to the first connecting seat about a horizontal line as an axis, and the laser welding gun being connected to the second connecting seat so that the laser welding gun can rotate up and down around the horizontal line.

[0008] As a further embodiment, the second drive mechanism includes a second servo motor and a second hollow rotary platform respectively mounted on one side of the first connecting seat. The input end of the second hollow rotary platform is drivenly connected to the second servo motor, and the output end of the second hollow rotary platform is drivenly connected to the second connecting seat.

[0009] As a further embodiment, the connecting column has a hollow structure with both ends through it, and the connecting column coincides with the central axis of the first hollow rotating platform. The hanger has a first through hole that connects to the connecting column, and the first connecting seat has a second through hole that connects to the connecting column. The side wall of the hollow structure connecting column with both ends through it has multiple waist-shaped holes.

[0010] The electrical connection wires of the second servo motor and the laser welding gun can pass through the waist-shaped hole, the connecting post and the first through hole in sequence;

[0011] The second connector is equipped with a laser and multiple 3D cameras. The electrical connection wires of the laser and the multiple 3D cameras can pass through the second through hole, the connecting post and the first through hole in sequence.

[0012] As a further embodiment, the XYZ axis moving device includes an X-axis slide, a Z-axis slide, and two sets of Y-axis slides located on both sides of the laser welding gun. Both sets of Y-axis slides are mounted above the placement platform via support frames. The X-axis slide is connected to the sliders of the two sets of Y-axis slides via a horizontal plate. The Z-axis slide is connected to the slider of the X-axis slide via a connecting frame. One end of the hanger is connected to the slider of the Z-axis slide.

[0013] As a further embodiment, the five-axis laser welding machine also includes a wire feeding mechanism and a third drive mechanism for driving the wire feeding mechanism to rotate around the head of the laser welding gun.

[0014] The third drive mechanism includes a third servo motor and a synchronous wheel rotatably mounted on the laser welding gun. The third servo motor is connected to the laser welding gun via a fixed plate, and the third servo motor is connected to the synchronous wheel via a synchronous belt.

[0015] The wire feeding mechanism includes a wire feeding seat and a wire feeding tube into which welding wire can be loaded. The wire feeding tube is movably mounted on the wire feeding seat, and the wire feeding seat is connected to a synchronous pulley via a connector so that the wire feeding tube can rotate around the center line of the laser welding gun head.

[0016] As a further embodiment, the connector is L-shaped, with one end fixed to the synchronous pulley and the other end hinged to the wire feeder via a hinge seat.

[0017] The beneficial effects of this utility model are as follows: This utility model drives the horizontal rotation device, the vertical rotation device, and the laser welding gun to move synchronously along the X, Y, and Z axes through the XYZ axis moving device. The horizontal rotation device drives the vertical rotation device and the laser welding gun to rotate in the horizontal plane. Combined with the vertical rotation device driving the laser welding gun to rotate up and down around the horizontal line, the laser welding gun head can rotate in three dimensions in three-dimensional space, realizing true five-axis position adjustment. This adapts to oddly shaped and uneven parts to be welded, thus enabling multi-angle welding of parts placed on the placement table. This can replace manual labor, further improve production efficiency, reduce production costs, and improve welding quality. Attached Figure Description

[0018] Figure 1 This is a perspective view (I) of an embodiment of the present utility model;

[0019] Figure 2 This is a perspective view (second) of an embodiment of the present utility model (without a protective cover);

[0020] Figure 3 This is a perspective view (third) of an embodiment of the present utility model (without a protective cover);

[0021] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0022] Figure 5 This is a perspective view (fourth) of an embodiment of the present utility model (without a protective cover);

[0023] Figure 6 for Figure 5 Enlarged view of point B in the image.

[0024] In the diagram, 1-placement platform, 2-laser welding gun, 3-up-down rotating device, 31-second drive mechanism, 311-second servo motor, 312-second hollow rotating platform, 32-first connecting seat, 321-second through hole, 33-second connecting seat, 4-horizontal rotating device, 41-hanger, 411-first through hole, 42-connecting column, 421-waist-shaped hole, 43-first drive mechanism, 431-first servo motor, 432-first hollow rotating platform, 5-X YZ axis moving device, 51-X axis slide, 52-Z axis slide, 53-Y axis slide, 54-support frame, 55-horizontal plate, 56-connecting frame, 6-horizontal line, 7-laser, 71-3D camera, 8-wire feeding mechanism, 81-wire feeding seat, 82-wire feeding tube, 83-connector, 84-hinge seat, 9-third drive mechanism, 91-third servo motor, 92-synchronous pulley, 93-fixed plate, 94-synchronous belt, 10-protective cover, 101-exhaust fan. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0026] As attached Figure 3-4 As shown, the present invention provides a five-axis laser welding machine, including a placement table 1, a laser welding gun 2, an up-and-down rotating device 3, a horizontal rotating device 4, and an XYZ axis moving device 5. The up-and-down rotating device 3 can drive the laser welding gun 2 to rotate up and down around a horizontal line 6. The horizontal rotating device 4 can drive the up-and-down rotating device 3 and the laser welding gun 2 to rotate in the horizontal plane. The XYZ axis moving device 5 can drive the horizontal rotating device 4, the up-and-down rotating device 3, and the laser welding gun 2 to move synchronously along the X-axis, Y-axis, and Z-axis. The XYZ axis moving device 5 is disposed on the placement table 1.

[0027] This invention uses an XYZ axis moving device 5 to drive a horizontal rotating device 4, an up-and-down rotating device 3, and a laser welding torch 2 to move synchronously along the X, Y, and Z axes. The horizontal rotating device 4 drives the up-and-down rotating device 3 and the laser welding torch 2 to rotate in the horizontal plane. Combined with the up-and-down rotating device 3 driving the laser welding torch 2 to rotate up and down around the horizontal line 6, the torch head of the laser welding torch 2 can rotate in three dimensions in three-dimensional space, achieving true five-axis position adjustment. This adapts to oddly shaped and uneven parts to be welded, allowing for multi-angle welding of parts placed on the placement table 1. This can replace manual labor, further improving production efficiency, reducing production costs, and improving welding quality.

[0028] For details, see attached. Figure 4 As shown, the aforementioned horizontal rotation device 4 includes a hanger 41 connected to the output end of the XYZ axis moving device 5, a connecting column 42 installed at one end of the hanger 41, and a first drive mechanism 43 installed on the hanger 41. The hanger 41 is placed horizontally, thereby driving the hanger 41 to move along the X, Y, and Z axes via the XYZ axis moving device 5. The connecting column 42 is located below the hanger 41 and is vertically arranged. The top end of the connecting column 42 is rotatably connected to the end of the hanger 41 away from the XYZ axis moving device 5. The bottom end of the connecting column 42 is connected and fixed to the upper and lower rotation device 3. The first drive mechanism 43 can drive the connecting column 42 to rotate around the center line of the connecting column 42 (the center line is perpendicular to the placement platform 1) as the axis, thereby causing the laser welding gun 2 to rotate in the horizontal plane. That is, on the same horizontal plane, the head of the laser welding gun 2 can be adjusted to face different angles to the workpiece to be welded as needed, and welding can be performed.

[0029] As one example, see attached Figure 4 As shown, the first drive mechanism 43 includes a first servo motor 431 and a first hollow rotating platform 432, both mounted on the hanger 41. The input end of the first hollow rotating platform 432 is connected to the first servo motor 431, and the output end of the first hollow rotating platform 432 is connected to the connecting column 42. The first servo motor 431 drives the first hollow rotating platform 432, which in turn drives the connecting column 42 to rotate around its centerline, thereby causing the upper and lower rotating device 3 and the laser welding gun 2 to rotate in the horizontal plane. The first hollow rotating platform 432 is chosen because it occupies little space and has high transmission efficiency.

[0030] For details, see attached. Figure 4 As shown, the vertical rotation device 3 includes a second drive mechanism 31, a first connecting seat 32 and a second connecting seat 33 rotatably connected. The bottom end of the connecting column 42 is fixedly connected to the first connecting seat 32. The second drive mechanism 31 is installed on one side of the first connecting seat 32, and the second drive mechanism 31 can drive the second connecting seat 33 to rotate relative to the first connecting seat 32 about the horizontal line 6 as an axis. The laser welding gun 2 is fixedly connected to the second connecting seat 33 so that the laser welding gun 2 can rotate vertically about the horizontal line 6 (the horizontal line 6 is parallel to the surface of the placement platform 1, and it is the axis of rotation between the first connecting seat 32 and the second connecting seat 33). The second drive mechanism 31 can drive the second connecting seat 33 to rotate relative to the first connecting seat 32 about the horizontal line 6 as an axis. That is, in the Z-axis direction, the head of the laser welding gun 2 can be adjusted to different angles facing the workpiece to be welded as needed, and welding can be performed.

[0031] As one example, see attached Figure 4As shown, the second drive mechanism 31 includes a second servo motor 311 and a second hollow rotary platform 312 respectively mounted on one side of the first connecting seat 32. The input end of the second hollow rotary platform 312 is connected to the second servo motor 311, and the output end of the second hollow rotary platform 312 is connected to the second connecting seat 33. The second servo motor 311 drives the second hollow rotary platform 312, which in turn causes the second connecting seat 33 to rotate relative to the first connecting seat 32 about the horizontal line 6 as its axis. The advantage of choosing the second hollow rotary platform 312 is its small footprint and high transmission efficiency.

[0032] In some embodiments, as shown in the appendix Figure 3-4 As shown, the workpiece to be welded is located below the laser welding torch 2, therefore the electrical connection lines of each component need to be routed upwards. Since the connecting post 42 requires frequent rotation, to avoid bending and pulling interference to the electrical connection lines caused by adjusting the angle of the laser welding torch 2's head in the horizontal plane and Z-axis direction, the connecting post 42 has a hollow structure with both ends penetrating through it. The connecting post 42 coincides with the central axis of the first hollow rotating platform 432. The hanger 41 has a first through hole 411 connecting to the connecting post 42, and the first connecting seat 32 has a second through hole 321 connecting to the connecting post 42. Multiple oblong holes 421 are formed on the side wall of the hollow connecting post 42.

[0033] Specifically, the electrical connection wires of the second servo motor 311 and the laser welding gun 2 can pass sequentially through the oblong hole 421, the connecting post 42, and the first through hole 411, thereby collecting and managing the electrical connection wires. (See attached image) Figure 4 As shown, a laser 7 and multiple 3D cameras 71 are installed on the second connector 33. The electrical connection wires of the laser 7 and the multiple 3D cameras 71 are sequentially passed through the second through hole 321, the connecting post 42 and the first through hole 411, so as to collect and manage the electrical connection wires.

[0034] The laser 7 is used to sense the distance to the workpiece in real time and transmit the distance data to the control system. The control system then controls the XYZ axis moving device 5 to adjust the laser welding gun 2 to the position of the workpiece. The 3D camera 71 is used to scan the shape of the workpiece to obtain data and transmit the data to the control system. The control system then controls the up-down rotation device 3 and the horizontal rotation device 4 to adjust the laser welding gun 2 to match the weld seam in real time, achieving automated and precise welding.

[0035] Furthermore, as shown in the appendix Figure 3As shown, the XYZ axis moving device 5 includes an X-axis slide 51, a Z-axis slide 52, and two sets of Y-axis slides 53 located on both sides of the laser welding torch 2. Both sets of Y-axis slides 53 are mounted above the placement platform 1 via support frames 54. The X-axis slide 51 is connected to the sliders of the two sets of Y-axis slides 53 via a horizontal plate 55. The Z-axis slide 52 is connected to the slider of the X-axis slide 51 via a connecting frame 56. One end of the hanger 41 is connected to the slider of the Z-axis slide 52. The Y-axis slide 53 drives the X-axis slide 51 to move in the Y-axis direction, the X-axis slide 51 drives the Z-axis slide 52 to move in the X-axis direction, and the Z-axis slide 52 drives the hanger 41 to move in the Z-axis direction, thereby ultimately driving the horizontal rotating device 4, the vertical rotating device 3, and the laser welding torch 2 to move synchronously along the X, Y, and Z axes.

[0036] It should be noted that the workpiece to be welded on the placement stage 1 is located between the two sets of Y-axis slides 53.

[0037] Additionally, as attached Figure 5-6 As shown, the five-axis laser welding machine also includes a wire feeding mechanism 8 and a third drive mechanism 9 that drives the wire feeding mechanism 8 to rotate around the head of the laser welding gun 2. The third drive mechanism 9 includes a third servo motor 91 and a synchronous wheel 92 rotatably mounted on the laser welding gun 2. The third servo motor 91 is connected to the laser welding gun 2 via a fixing plate 93, and the third servo motor 91 is connected to the synchronous wheel 92 via a synchronous belt 94. The wire feeding mechanism 8 includes a wire feeding seat 81 and a wire feeding tube 82 into which welding wire can be inserted. The wire feeding tube 82 is movably mounted on the wire feeding seat 81, and the wire feeding seat 81 is connected to the synchronous wheel 92 via a connector 83, so that the wire feeding tube 82 can rotate around the center line of the head of the laser welding gun 2. Welding wire can be inserted into the wire feeding tube 82. When welding some uneven parts, even the up-and-down rotation device 3, the horizontal rotation device 4, and the XYZ axis moving device 5 cannot adjust the welding wire to a suitable angle. Therefore, by driving the wire feeder 81 and the welding wire to rotate around the center line of the laser welding gun 2 by the third servo motor 91, the welding wire can be adjusted to a suitable angle to cooperate with the laser welding gun 2 for welding.

[0038] The connector 83 is L-shaped. One end of the connector 83 is fixed to the synchronous pulley 92, and the other end of the connector 83 is hinged to the wire feeder 81 through the hinge seat 84. The hinge seat 84 and the wire feeder 81 can rotate in conjunction with the synchronous pulley 92. Furthermore, the hinge seat 84 and the wire feeder 81 can adjust the distance between the welding wire and the torch head to adapt to different parts to be welded.

[0039] Of course, as attached Figure 1As shown, the five-axis laser welding machine also includes a protective cover 10, which covers the laser welding gun 2, the vertical rotation device 3, the horizontal rotation device 4, and the XYZ axis moving device 5, thus isolating the welding process. An exhaust fan 101 is installed on the top of the protective cover 10, which is used to exhaust the waste gas generated during the laser welding process.

[0040] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A five-axis laser welding machine, characterized in that: The device includes a placement platform (1), a laser welding gun (2), a vertical rotation device (3), a horizontal rotation device (4), and an XYZ axis moving device (5). The vertical rotation device (3) can drive the laser welding gun (2) to rotate up and down around a horizontal line (6). The horizontal rotation device (4) can drive the vertical rotation device (3) and the laser welding gun (2) to rotate in a horizontal plane. The XYZ axis moving device (5) can drive the horizontal rotation device (4), the vertical rotation device (3), and the laser welding gun (2) to move synchronously along the X-axis, Y-axis, and Z-axis. The XYZ axis moving device (5) is mounted on the placement platform (1).

2. The five-axis laser welding machine according to claim 1, characterized in that: The horizontal rotation device (4) includes a hanger (41) connected to the output end of the XYZ axis moving device (5), a connecting column (42) installed at one end of the hanger (41), and a first drive mechanism (43) installed on the hanger (41). The hanger (41) is placed horizontally, the connecting column (42) is located below the hanger (41) and is set vertically, and the top end of the connecting column (42) is rotatably connected to the end of the hanger (41) away from the XYZ axis moving device (5). The bottom end of the connecting column (42) is connected to the upper and lower rotation device (3). The first drive mechanism (43) can drive the connecting column (42) to rotate around the center line of the connecting column (42).

3. A five-axis laser welding machine according to claim 2, characterized in that: The first drive mechanism (43) includes a first servo motor (431) and a first hollow rotating platform (432) respectively mounted on the hanger (41). The input end of the first hollow rotating platform (432) is connected to the first servo motor (431) in a transmission connection, and the output end of the first hollow rotating platform (432) is connected to the connecting column (42) in a transmission connection.

4. A five-axis laser welding machine according to claim 2, characterized in that: The up-and-down rotating device (3) includes a second driving mechanism (31), a first connecting seat (32) and a second connecting seat (33) rotatably connected. The bottom end of the connecting column (42) is fixedly connected to the first connecting seat (32). The second driving mechanism (31) is installed on one side of the first connecting seat (32), and the second driving mechanism (31) can drive the second connecting seat (33) to rotate relative to the first connecting seat (32) with the horizontal line (6) as the axis. The laser welding gun (2) is connected to the second connecting seat (33) so that the laser welding gun (2) can rotate up and down around the horizontal line (6).

5. A five-axis laser welding machine according to claim 4, characterized in that: The second drive mechanism (31) includes a second servo motor (311) and a second hollow rotating platform (312) respectively installed on one side of the first connecting seat (32). The input end of the second hollow rotating platform (312) is connected to the second servo motor (311) in a transmission connection, and the output end of the second hollow rotating platform (312) is connected to the second connecting seat (33) in a transmission connection.

6. A five-axis laser welding machine according to claim 5, characterized in that: The connecting column (42) has a hollow structure with both ends through it, and the connecting column (42) coincides with the central axis of the first hollow rotating platform (432). The hanger (41) has a first through hole (411) that connects to the connecting column (42), and the first connecting seat (32) has a second through hole (321) that connects to the connecting column (42). The side wall of the hollow structure connecting column (42) with both ends through it has a plurality of waist-shaped holes (421). The electrical connection wires of the second servo motor (311) and the laser welding gun (2) can pass through the waist-shaped hole (421), the connecting post (42) and the first through hole (411) in sequence. The second connector (33) is equipped with a laser (7) and multiple 3D cameras (71). The electrical connection lines of the laser (7) and the multiple 3D cameras (71) can pass through the second through hole (321), the connecting post (42) and the first through hole (411) in sequence.

7. A five-axis laser welding machine according to claim 2, characterized in that: The XYZ axis moving device (5) includes an X-axis slide (51), a Z-axis slide (52), and two sets of Y-axis slides (53) located on both sides of the laser welding gun (2). Both sets of Y-axis slides (53) are set above the placement platform (1) by a support frame (54). The X-axis slide (51) is connected to the slider of the two sets of Y-axis slides (53) by a horizontal plate (55). The Z-axis slide (52) is connected to the slider of the X-axis slide (51) by a connecting frame (56). One end of the hanger (41) is connected to the slider of the Z-axis slide (52).

8. A five-axis laser welding machine according to claim 1, characterized in that: The five-axis laser welding machine also includes a wire feeding mechanism (8) and a third drive mechanism (9) for driving the wire feeding mechanism (8) to rotate around the head of the laser welding gun (2). The third drive mechanism (9) includes a third servo motor (91) and a synchronous wheel (92) rotatably mounted on the laser welding gun (2). The third servo motor (91) is connected to the laser welding gun (2) via a fixing plate (93), and the third servo motor (91) is connected to the synchronous wheel (92) via a synchronous belt (94). The wire feeding mechanism (8) includes a wire feeding seat (81) and a wire feeding tube (82) into which welding wire can be loaded. The wire feeding tube (82) is movably mounted on the wire feeding seat (81). The wire feeding seat (81) is connected to the synchronous pulley (92) via a connector (83) so that the wire feeding tube (82) can rotate around the center line of the gun head of the laser welding gun (2).

9. A five-axis laser welding machine according to claim 8, characterized in that: The connector (83) is L-shaped. One end of the connector (83) is fixed on the synchronous pulley (92), and the other end of the connector (83) is hinged to the wire feeder (81) through the hinge seat (84).

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