A laser cutting head rotary swing mechanism

Abstract

The application discloses a laser cutting head rotating and swinging mechanism, which comprises a sliding rail, a sliding block is arranged in the sliding rail, a liftable swinging assembly is arranged in the sliding block, a laser head is arranged in the swinging assembly, a reflecting strip is arranged on one side of the laser head, the swinging assembly comprises a support, the back of the support is in sliding connection with the sliding block, a center column is rotatably arranged in the center of the support, the laser head is arranged at the bottom of the center column, and a first gear is fixedly connected to the top of the center column, the laser head is rotatably connected to the bottom of the center column on both sides, a bevel gear is fixed in the rotating shaft on one side of the laser head, a sleeve is rotatably arranged outside the center column, a bevel gear ring is fixed to the bottom of the sleeve, the bevel gear ring is in mesh with the bevel gear, and a second gear is fixed to the top of the sleeve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting, in particular to a laser cutting head rotating and swinging mechanism. BACKGROUND

[0002] As an important technology in modern manufacturing, laser cutting is widely used in aerospace, automobile manufacturing, electronics, medical devices and other fields due to its high precision, high efficiency, non-contact processing and easy automation and intelligent control. The basic principle of laser cutting is to use high-power density laser beam to irradiate the workpiece surface, so that the material is rapidly melted, vaporized, evaporated or reaches the ignition point, and at the same time, the high-speed airflow blows away the molten material, thereby achieving the purpose of cutting.

[0003] In the laser cutting process, the motion trajectory and attitude of the laser cutting head are crucial to the cutting quality. In order to achieve more complex and delicate cutting patterns, the laser cutting head not only needs to be able to move linearly along the X, Y, Z axes, but also needs to have the ability to rotate and swing. The rotating and swinging function of the laser cutting head can make the laser beam irradiate the workpiece surface at different angles and attitudes, thereby meeting the cutting needs of various complex shapes and structures.

[0004] The existing laser cutting head rotating and swinging mechanism usually adopts the way of directly connecting the motor in the laser head to realize the swing. Although this design realizes the swing function of the laser head to some extent, it has many shortcomings. First of all, since the motor is directly connected in the laser head, the center of gravity of the laser head deviates from the center, and the force is unbalanced, which not only affects the precision and stability of laser cutting, but also accelerates the wear of the laser head and related parts, reducing the service life.

[0005] Secondly, the swing angle of the existing laser cutting head rotating and swinging mechanism is limited. Since a certain safety distance needs to be maintained between the laser head and the object to be cut to avoid collision between the laser beam and the object during cutting, when the swing angle is too large, the height of the laser head will be too low, and even it may not be able to complete the cutting task. In addition, the swing angle of the existing mechanism is usually not equal to or greater than the flat angle, which limits the cutting ability of the laser cutting head at certain specific angles.

[0006] In summary, although the existing laser cutting head rotating and swinging mechanism realizes the swing function of the laser head to some extent, it has the shortcomings of center of gravity deviation, force imbalance, limited swing angle, etc. Therefore, researching and developing new laser cutting head rotating and swinging mechanism is of great significance to improve the precision and flexibility of laser cutting and expand the application field of laser cutting technology. SUMMARY

[0007] In order to achieve the above object, the present application provides the following technical scheme: a laser cutting head rotating and swinging mechanism, comprising:

[0008] A sliding rail is provided with a sliding block;

[0009] A liftable swinging assembly is arranged in the sliding block;

[0010] A laser head is arranged in the swinging assembly, and a reflecting strip is arranged on one side of the laser head;

[0011] The swinging assembly comprises a support, the back of the support is in sliding connection with the sliding block, a center column is rotatably arranged at the center of the support, the laser head is arranged at the bottom of the center column, and a first gear is fixedly connected to the top of the center column.

[0012] The laser head is rotatably connected to the bottom of the center column on both sides, and a bevel gear is fixed in the rotating shaft on one side of the laser head;

[0013] A sleeve is rotatably arranged outside the center column, the bottom of the sleeve is fixedly connected with a bevel gear ring, the bevel gear ring is in meshing connection with the bevel gear, and a second gear is fixedly connected to the top of the sleeve.

[0014] A swing arm is rotatably arranged at the bottom of the center column, the swing plane of the swing arm is the same as the swing plane of the laser head, and the reflecting strip is fixed to the lower end of the swing arm.

[0015] A sliding groove is further arranged in the swing arm, and a connecting block is slidably and rotatably arranged in the sliding groove;

[0016] A rotating ring is rotatably arranged on the outer wall of the sleeve, a vertical guide screw is rotatably arranged in the rotating ring and penetrates the upper and lower parts, and the guide screw is in threaded connection with the connecting block; a third gear is fixedly connected to the upper part of the rotating ring, the upper end of the guide screw is fixedly connected with a threaded cylinder, and the threaded cylinder is in meshing connection with the third gear.

[0017] The first gear, the second gear and the third gear are all worm gears.

[0018] Three driving worms capable of driving the first gear, the second gear and the third gear respectively are arranged in the support.

[0019] A driving device is arranged between the sliding block and the sliding rail, the driving device is used for driving the sliding block to slide along the sliding rail, and the driving device is a transmission mechanism driven by a motor lead screw or a stepping motor.

[0020] The swinging assembly further comprises a lifting mechanism used for adjusting the lifting height of the laser head, and the lifting mechanism comprises a lifting lead screw connected with the support and a lifting motor used for driving the lifting lead screw to rotate.

[0021] The swing assembly further comprises a limiting mechanism for limiting the maximum swing angle of the laser head during the swing, the limiting mechanism comprising a limiting groove arranged at the bottom of the central column and a limiting block fixed on both sides of the laser head.

[0022] The threaded connection between the guide screw and the connecting block is a self-locking threaded connection, so as to prevent the connecting block from moving accidentally due to vibration or external force when the height is not required to be adjusted.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] In the present application, the mechanism realizes multi-dimensional adjustment of the laser head in rotation, swing, and the angle and height of the reflecting strip through precise mechanical structure design. The multi-degree-of-freedom movement mode enables the laser beam to cut according to a more complex trajectory, thereby meeting the cutting requirements of various complex shapes and fine structures. Not only the cutting precision and quality are improved, but also the application field of laser cutting technology is greatly expanded.

[0025] In the present application, the reflecting strip in the mechanism is designed to change the propagation direction of the laser beam, so that the laser can hit the object to be cut at a more horizontal angle. This feature is particularly suitable for cutting the transverse position of the object, effectively solving the problem of poor cutting effect of the existing laser cutting technology at certain specific angles. At the same time, the angle and height of the reflecting strip can be adjusted according to the cutting requirements, further enhancing the flexibility and adaptability of the cutting.

[0026] In the present application, the reasonable transmission mode of the mechanism ensures stable connection and smooth movement between the components, and reduces the deviation of the center of gravity. This not only improves the reliability and durability of the mechanism, but also reduces the failure rate and maintenance cost. At the same time, the compact and reasonable structure design of the mechanism makes the entire device run more smoothly and accurately. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a laser cutting head rotation and swing mechanism;

[0028] Figure 2 It is a structural schematic diagram of a swing assembly;

[0029] Figure 3 It is a sectional structural schematic diagram of a swing assembly;

[0030] Figure 4 It is a schematic diagram when the laser head directly hits the object;

[0031] Figure 5 It is a schematic diagram when the laser head hits the object through the reflecting strip;

[0032] In the figure: 1, slide rail; 2, sliding block; 3, swing assembly; 31, support; 32, center column; 33, first gear; 34, umbrella gear; 35, sleeve; 36, second gear; 37, swing arm; 38, sliding groove; 39, connecting block; 310, guide screw; 311, rotating ring; 312, third gear; 313, threaded cylinder; 4, laser head; 41, umbrella gear; 5, reflecting strip; 6, driving worm. DETAILED DESCRIPTION

[0033] Referring to Figure 1 In the embodiment of the present application, a laser cutting head rotating and swinging mechanism comprises:

[0034] A slide rail 1 is provided with a sliding block 2;

[0035] A liftable swing assembly 3 is arranged in the sliding block 2;

[0036] A laser head 4 is arranged in the swing assembly 3, and a reflecting strip 5 is arranged on one side of the laser head 4;

[0037] The swing assembly 3 comprises a support 31, the back of the support 31 is in sliding connection with the sliding block 2, a center column 32 is rotatably arranged at the center of the support 31, the laser head 4 is arranged at the bottom of the center column 32, and a first gear 33 is fixedly connected to the top of the center column 32. That is, the laser head 4 can rotate by rotating the first gear 33.

[0038] The laser head 4 is rotatably connected to the bottom of the center column 32, and an umbrella gear 41 is fixedly arranged in the rotating shaft on one side of the laser head 4;

[0039] A sleeve 35 is rotatably arranged outside the center column 32, an umbrella gear 34 is fixedly arranged at the bottom of the sleeve 35, the umbrella gear 34 is in meshing connection with the umbrella gear 41, and a second gear 36 is fixedly arranged at the top of the sleeve 35.

[0040] That is, the laser head 4 can swing by rotating the second gear 36, so that the emitted laser has a certain angle.

[0041] A swing arm 37 is rotatably arranged at the bottom of the center column 32, the swing plane of the swing arm 37 is the same as the swing plane of the laser head 4, and the reflecting strip 5 is fixedly arranged at the lower end of the swing arm 37.

[0042] The inclination angle and position of the reflecting strip 5 can be changed by rotating the swing arm 37, and when the laser emitted by the laser head 4 intersects with the reflecting strip 5, the reflecting strip 5 can reflect the laser, so that the laser can hit the object to be cut at a more horizontal angle, thereby cutting the transverse position of the object.

[0043] The swing arm 37 is further provided with a sliding groove 38, and a connecting block 39 is slidably and rotatably arranged in the sliding groove 38.

[0044] The outer wall of the sleeve 35 is rotatably provided with a rotating ring 311, the rotating ring 311 is rotatably provided with a vertical guide screw 310 penetrating the upper and lower portions, and the guide screw 310 is threadedly connected with the connecting block 39; the upper portion of the rotating ring 311 is fixedly connected with a third gear 312, and the upper end of the guide screw 310 is fixedly provided with a threaded cylinder 313 which is engaged with the third gear 312.

[0045] That is, by rotating the third gear 312, the guide screw 310 can be caused to rotate, so as to change the height of the connecting block 39, and then the connecting block 39 is caused to slide in the sliding groove 38 and drive the swing arm 37 and the reflecting strip 5 to swing.

[0046] The first gear 33, the second gear 36 and the third gear 312 are all worm gears.

[0047] The bracket 31 is provided with three drive worms 6 which can respectively drive the first gear 33, the second gear 36 and the third gear 312.

[0048] The sliding block 2 and the slide rail 1 are provided with a driving device which drives the sliding block 2 to slide along the slide rail 1, and the driving device is a transmission mechanism driven by a motor lead screw or a stepping motor.

[0049] The swing assembly 3 further comprises a lifting mechanism for adjusting the lifting height of the laser head 4, and the lifting mechanism comprises a lifting lead screw connected with the bracket 31 and a lifting motor for driving the lifting lead screw to rotate.

[0050] The swing assembly 3 further comprises a limiting mechanism for limiting the maximum swing angle of the laser head 4 during the swing, and the limiting mechanism comprises a limiting groove arranged at the bottom of the central column 32 and limiting blocks fixed on both sides of the laser head 4. Since the limiting blocks can only move in the limiting groove, the rotation angle of the laser head 4 is limited.

[0051] The thread connection between the guide screw 310 and the connecting block 39 is self-locking thread connection, so as to prevent the connecting block 39 from moving accidentally due to vibration or external force when the height is not required to be adjusted.

[0052] In specific implementation, the following is included:

[0053] Laser head rotation adjustment:

[0054] The first gear 33 is driven to rotate by the drive worm, and then the central column 32 and the laser head 4 are caused to rotate. According to the cutting requirement, the rotation angle of the laser head 4 is adjusted to ensure that the laser beam can cut according to the predetermined direction.

[0055] Laser head swing adjustment:

[0056] By driving the worm to drive the second gear 36 relative to the first gear 33, in turn, drive sleeve 35 and the gear 34 rotation. Gear 34 and laser head 4 side of the bevel gear 41 mesh, thereby driving the laser head 4 in the center column 32 bottom swing. According to the cutting requirements, adjust the swing angle of the laser head 4, so that the laser beam can be shot at a certain angle to the cutting object.

[0057] Reflection bar angle and height adjustment:

[0058] By driving the worm to drive the third gear 312 relative to the second gear 36 rotation, in turn, drive the rotating ring 311 and guide screw 310 rotation. Guide screw 310 and connecting block 39 thread connection, so with the rotation of the guide screw 310, connecting block 39 will slide in the chute 38 and rise or fall. The sliding of the connecting block 39 will drive the swing arm 37 and the reflection bar 5 swing, thereby changing the inclination angle and position of the reflection bar 5. According to the cutting requirements, adjust the angle and height of the reflection bar 5, so that the laser beam can be shot at a certain angle to the cutting object after reflection, realize the horizontal position of the cutting.

[0059] The above, only for the preferred specific embodiments of the present application, but the scope of protection of the present application is not limited to this, any skilled in the art of the technical personnel in the technical range of the present application disclosed according to the technical scheme of the present application and the invention concept of equivalent replacement or change, should be covered in the scope of protection of the present application.

Claims

1. A laser cutting head rotational wobble mechanism characterized by, include: Slide rail (1), wherein a slider (2) is slidably disposed in slide rail (1); The slider (2) is provided with a height-adjustable swing component (3); The swing assembly (3) is provided with a laser head (4), and a reflective strip (5) is provided on one side of the laser head (4); The swing assembly (3) includes a bracket (31), the back of the bracket (31) is slidably connected to the slider (2), a central column (32) is rotatably provided at the center of the bracket (31), the laser head (4) is provided at the bottom of the central column (32), and a first gear (33) is fixedly connected to the top of the central column (32). The laser head (4) is rotatably connected to the bottom of the central column (32) on both sides, and a bevel gear (41) is fixed in the rotating shaft on one side of the laser head (4). A sleeve (35) is rotatably sleeved on the outside of the central column (32). A bevel gear ring (34) is fixed at the bottom of the sleeve (35). The bevel gear ring (34) meshes with the bevel gear (41). A second gear (36) is fixed at the top of the sleeve (35). The bottom of the central column (32) is rotatably provided with a swing arm (37), the swing plane of the swing arm (37) is the same as the swing plane of the laser head (4), and the reflective strip (5) is fixed at the lower end of the swing arm (37). The swing arm (37) is also provided with a slide groove (38), and a connecting block (39) is slidably and rotatably provided in the slide groove (38). The outer wall of the sleeve (35) is rotatably provided with a rotating ring (311), and a vertical guide screw (310) is rotatably provided in the rotating ring (311), and the guide screw (310) is threadedly connected to the connecting block (39); a third gear (312) is fixedly connected above the rotating ring (311), and a threaded cylinder (313) is fixedly fixed at the upper end of the guide screw (310), and the threaded cylinder (313) meshes with the third gear (312).

2. The laser cutting head rotational wobble mechanism of claim 1, wherein, The first gear (33), the second gear (36), and the third gear (312) are all worm gears.

3. The laser cutting head rotational wobble mechanism of claim 2, wherein, The bracket (31) is provided with three drive worms that can drive the first gear (33), the second gear (36), and the third gear (312) respectively.

4. The laser cutting head rotation and oscillation mechanism according to claim 1, characterized in that, A driving device is provided between the slider (2) and the slide rail (1) to drive the slider (2) to slide along the slide rail (1). The driving device is a transmission mechanism driven by an electric lead screw or a stepper motor.

5. The laser cutting head rotation and oscillation mechanism according to claim 1, characterized in that, The swing assembly (3) also includes a lifting mechanism for adjusting the height of the laser head (4), the lifting mechanism including a lifting screw connected to the bracket (31) and a lifting motor for driving the lifting screw to rotate.

6. The laser cutting head rotation and oscillation mechanism according to claim 1, characterized in that, The swing assembly (3) also includes a limiting mechanism for limiting the maximum swing angle of the laser head (4) during the swing process. The limiting mechanism includes a limiting groove at the bottom of the central column (32) and limiting blocks fixed on both sides of the laser head (4).

7. The laser cutting head rotation and oscillation mechanism according to claim 1, characterized in that, The threaded connection between the guide screw (310) and the connecting block (39) is a self-locking threaded connection to prevent the connecting block (39) from moving accidentally due to vibration or external force when the height adjustment is not required.

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