Laser head swing mechanism and laser processing equipment

Abstract

The utility model discloses a laser head swing mechanism and laser processing equipment. The laser head swing mechanism comprises a swing arm, a laser head, a distance measuring sensor, a baffle plate and a protection driving part, the swing arm is used for being connected with a moving mechanism of the laser machining equipment and is provided with a mounting cavity and a communicating opening, and the communicating opening communicates with the outside and the mounting cavity. The laser head is mounted on the swinging arm; the distance measuring sensor is mounted in the mounting cavity, and a distance measuring probe faces the communication port; the baffle is movably mounted on the mounting seat and can shield and avoid the communication port in the moving stroke; and the protection driving part is mounted on the swinging arm, is in driving connection with the baffle plate and is used for driving the baffle plate to be switched between positions for shielding and avoiding the communication port. According to the scheme, dust generated during laser processing can be effectively prevented from splashing to pollute the distance measuring sensor, the measuring precision is guaranteed, the distance measuring sensor does not need to be manually or mechanically moved away, the laser processing convenience is improved, and meanwhile, the structure is simple and compact, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of laser processing equipment, and particularly relates to a laser head swing mechanism and a laser processing equipment. Background Art

[0002] In the field of laser processing, there are deviations between the surface of the workpiece and the theoretical drawing. Since it is a non-contact processing, the gun head needs to follow the up and down undulations of the processing surface, which is commonly called follow-up processing. This follow-up direction is required to be perpendicular to the surface of the workpiece. At this time, for the traditional AC structure laser processing equipment, the undulation distance of the workpiece is converted into three directions of X, Y, and Z, and the follow-up processing is realized through the actions of motors in three directions.

[0003] For example, the patent CN213729919U discloses a five-axis laser processing equipment, and its driving component includes a base and an X linear axis, a Y linear axis, a Z linear axis, an A rotating axis, and a C rotating axis arranged on the base. The Z linear axis is installed on the X linear axis so that the X linear axis can drive the Z linear axis to move in the linear direction of the X linear axis. The A rotating axis and the C rotating axis are respectively installed on the Y linear axis so that the Y linear axis can drive the A rotating axis and the C rotating axis to move along the linear direction of the Y linear axis.

[0004] However, during the laser processing, it is often necessary to measure the surface of the workpiece through a high-precision ranging sensor. In the transmission scheme, the measurement unit is an independent structure. After the measurement is completed, the ranging sensor is removed by manual or mechanism, and then the processing starts to avoid the dust generated during processing from splashing and polluting the ranging sensor. The operation is relatively cumbersome. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and propose a laser head swing mechanism to solve the technical problem that after the ranging sensor measures the surface of the workpiece in the prior art, the ranging sensor is removed by manual or mechanism, and then the processing starts to avoid the dust generated during processing from splashing and polluting the sensor, and the operation is relatively cumbersome.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] In the first aspect, the utility model provides a laser head swing mechanism, including:

[0008] A swing arm for connecting the moving mechanism of the laser processing equipment, and having an installation cavity and a communication port, the communication port communicating the outside with the installation cavity;

[0009] A laser head installed on the swing arm;

[0010] A ranging sensor installed in the installation cavity, and its ranging probe facing the communication port;

[0011] A baffle plate, which is movably installed on the swing arm and can block and avoid the communication port during the moving stroke; and

[0012] A protection driving part, which is installed on the swing arm and is drivingly connected to the baffle plate, and is used to drive the baffle plate to switch between positions of blocking and avoiding the communication port.

[0013] In some embodiments, the laser head swing mechanism further includes a mounting seat, which is installed in the installation cavity and is spaced from the communication port to form an avoidance gap;

[0014] The baffle plate includes a partition plate and a connecting plate. The partition plate is arranged in the installation cavity, located in the avoidance gap, and is connected to the connecting plate at an angle. The connecting plate is located on one side of the mounting seat;

[0015] The protection driving part and the distance measuring sensor are installed on the side of the mounting seat away from the connecting plate, and the protection driving part is drivingly connected to the connecting plate, and is used to drive the connecting plate to approach and move away from the mounting seat, so that the partition plate can block and avoid the communication port. The distance measuring sensor is located on the side of the protection driving part close to the communication port.

[0016] In some embodiments, the mounting seat is provided with a guiding channel in a direction away from the connecting plate. The baffle plate further includes a guiding rod, one end of which is connected to the connecting plate and the other end of which movably penetrates through the guiding channel.

[0017] In some embodiments, the mounting seat is provided with a driving channel in a direction away from the connecting plate;

[0018] The protection driving part includes a driving cylinder, which is installed on the side of the mounting seat away from the connecting plate, and its telescopic rod penetrates through the driving channel and is connected to the connecting plate.

[0019] In some embodiments, the swing arm includes a connecting arm and a distance measuring seat, and the distance measuring seat is connected to the connecting arm through a screw connection;

[0020] Wherein, the installation cavity and the communication port are formed in the distance measuring seat, and one side of the installation cavity close to the connecting arm is open, and the communication port is located on the side of the installation cavity away from the connecting arm.

[0021] In some embodiments, the connecting arm includes a main body arm, a C-axis turntable, an A-axis turntable, and a U-axis seat. The main body arm is used to connect the moving mechanism of the laser processing device. The C-axis turntable is rotatably mounted on the main body arm around the Z-axis. The A-axis turntable is rotatably mounted on the C-axis turntable around the X-axis. The U-axis seat is mounted on the A-axis turntable and can move radially relative to the A-axis turntable.

[0022] The distance measuring seat is connected to the A-axis turntable through a screwing member, and the laser head is mounted on the U-axis seat.

[0023] In some embodiments, the swing arm further includes a C-axis driving part, an A-axis driving part, and a U-axis driving part. The C-axis driving part is mounted on the main body arm and is drivingly connected to the C-axis turntable for driving the C-axis turntable to rotate around the Z-axis. The A-axis driving part is mounted on the C-axis turntable and is drivingly connected to the A-axis turntable for driving the A-axis turntable to rotate around the X-axis. The U-axis driving part is mounted on the A-axis turntable and is drivingly connected to the U-axis seat for driving the U-axis seat to move radially relative to the A-axis turntable.

[0024] In some embodiments, the C-axis driving part includes a C-axis driving motor and a C-axis harmonic reducer. The C-axis driving motor, the C-axis harmonic reducer, and the C-axis turntable are sequentially drivingly connected.

[0025] The A-axis driving part includes an A-axis driving motor and an A-axis harmonic reducer. The A-axis driving motor, the A-axis harmonic reducer, and the A-axis turntable are sequentially drivingly connected.

[0026] In some embodiments, a fixed seat is mounted on one side of the A-axis turntable away from the C-axis turntable.

[0027] The U-axis driving part includes a U-axis driving motor, a slide rail, and a transmission lead screw. The U-axis driving motor and the slide rail are mounted on the fixed seat. The U-axis seat is provided with a chute corresponding to the slide rail and a transmission screw hole corresponding to the transmission lead screw. The slide rail is passed through the chute and extends along the radial direction of the A-axis turntable. The transmission lead screw is screwed into the transmission screw hole, and its extending direction is the same as that of the slide rail and is connected to the rotating shaft of the U-axis driving motor.

[0028] In a second aspect, the present invention further provides a laser processing device, which includes the laser head swing mechanism as described in any one of the above.

[0029] Compared with the prior art, in the laser head swing mechanism provided by the present utility model, the swing arm is connected to the moving mechanism of the laser processing equipment, that is, the swing arm is connected to the structure that enables the laser head to move along the X, Y, and Z axes; and the distance measuring sensor is arranged in the installation cavity. When distance measurement is required, the baffle is driven by the protection driving part to avoid the communication port, so that the distance measuring probe of the distance measuring sensor can measure the distance to the workpiece surface through the communication port; and after the measurement is completed, the baffle is driven by the protection driving part to move to the position blocking the communication port, so that the installation cavity is isolated from the outside; then the laser head is driven to perform laser processing. In this way, it can effectively avoid the dust splashing during laser processing from polluting the distance measuring sensor, ensure the measurement accuracy, and there is no need for manual or mechanism to move the distance measuring sensor, improving the convenience of laser processing. At the same time, the structure is simple and compact, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the laser head swing mechanism provided by an embodiment of the present utility model;

[0031] Figure 2 is Figure 1 a schematic structural diagram of the distance measuring seat, the distance measuring sensor, the baffle, the mounting seat and the protection driving part in

[0032] Figure 3 is Figure 2 a schematic structural diagram of the distance measuring seat, the distance measuring sensor, the baffle, the mounting seat and the protection driving part from another angle in

[0033] Figure 4 is Figure 3 a schematic structural diagram of the distance measuring seat and the mounting seat in

[0034] Figure 5 is Figure 1 a schematic partial structural diagram of the swing arm in

[0035] Figure 6 is Figure 1 a cross-sectional view of the swing arm in

[0036] Figure 7 is Figure 1 a schematic structural diagram of the U-axis seat and the laser head in

[0037] Description of the reference numerals:

[0038] 1. Swing arm; 11. Connecting arm; 12. Distance measuring seat; 12a. Installation cavity; 12b. Communication port; 13. Main body arm; 14. C-axis turntable; 15. A-axis turntable; 151. Fixed seat; 16. U-axis seat; 16a. Slide groove; 16b. Transmission screw hole; 17. C-axis drive part; 171. C-axis drive motor; 172. C-axis harmonic reducer; 18. A-axis drive part; 181. A-axis drive motor; 182. A-axis harmonic reducer; 19. U-axis drive part; 191. U-axis drive motor; 192. Slide rail; 193. Transmission lead screw; 2. Laser head; 21. Distance measuring sensor; 3. Baffle; 31. Partition board; 32. Connecting plate; 33. Guide rod; 4. Protection drive part; 5. Mounting seat; 5a. Avoidance gap; 5b. Guide channel; 5c. Drive channel. Detailed implementation manner

[0039] In order to make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0040] In order to solve the technical problem in the transmission technology that after the distance measuring sensor measures the surface of the workpiece, the distance measuring sensor is moved away manually or by a mechanism, and then processing starts to avoid dust splashing during processing from polluting the distance measuring sensor, and the operation is relatively cumbersome, the present utility model provides a laser head swing mechanism, which can effectively avoid dust splashing during laser processing from polluting the distance measuring sensor, ensure the measurement accuracy, and does not require manual or mechanical removal of the distance measuring sensor, improving the convenience of laser processing.

[0041] It should be noted that the laser head swing mechanism described in the present utility model is used for but not limited to laser processing equipment, etc. For the convenience of description, in the present utility model, only the case where the laser head swing mechanism is applied to a laser processing equipment is taken as an example for description, and the principle of the laser head swing mechanism applied to other types of equipment is essentially the same as that applied to the laser processing equipment, and will not be elaborated here one by one.

[0042] Please refer to Figure 1 and Figure 2 , Figure 1 and Figure 2The figure is a schematic structural diagram of a laser head swinging mechanism in an embodiment of the present invention. The laser head swinging mechanism includes a swinging arm 1, a laser head 2, a distance measuring sensor 21, a baffle 3 and a protection driving part 4. The swinging arm 1 is used to connect to the moving mechanism of the laser processing equipment, and has an installation cavity 12a and a communication port 12b. The communication port 12b communicates the outside with the installation cavity 12a. The laser head 2 is installed on the swinging arm 1. The distance measuring sensor 21 is installed in the installation cavity 12a, and its distance measuring probe faces the communication port 12b. The baffle 3 is movably installed on the swinging arm 1 and can block and avoid the communication port 12b during the moving stroke. The protection driving part 4 is installed on the swinging arm 1 and is drivingly connected to the baffle 3 for driving the baffle 3 to switch between the positions of blocking and avoiding the communication port 12b.

[0043] In the laser head swinging mechanism provided by the present invention, the swinging arm 1 is connected to the moving mechanism of the laser processing equipment, that is, the swinging arm 1 is connected to the structure that enables the laser head 2 to move along the X, Y, and Z axes; and the distance measuring sensor 21 is arranged in the installation cavity 12a. When distance measurement is required, the protection driving part 4 drives the baffle 3 to avoid the communication port 12b, so that the distance measuring probe of the distance measuring sensor 21 can perform distance measurement on the surface of the workpiece through the communication port 12b; and after the measurement is completed, the protection driving part 4 drives the baffle 3 to move to the position of blocking the communication port 12b, so that the installation cavity 12a is isolated from the outside; then the laser head 2 is driven to perform laser processing. In this way, it can effectively avoid the dust splashing during laser processing from polluting the distance measuring sensor 21, ensure the measurement accuracy, and there is no need for manual or mechanical removal of the distance measuring sensor 21, improving the convenience of laser processing. At the same time, the structure is simple and compact, and the cost is low. It should be noted that the structure that enables the laser head 2 to move along the X, Y, and Z axes is a prior art and will not be elaborated here.

[0044] In one of the embodiments, please refer to Figure 3 and Figure 4 , the laser head swinging mechanism further includes a mounting seat 5. The mounting seat 5 is installed in the installation cavity 12a and is spaced from the communication port 12b to form an avoidance gap 5a. The baffle 3 includes a partition plate 31 and a connecting plate 32. The partition plate 31 is arranged in the installation cavity 12a and is located in the avoidance gap 5a and is connected to the connecting plate 32 at an angle. The connecting plate 32 is located on one side of the mounting seat 5. The protection driving part 4 and the distance measuring sensor 21 are installed on the side of the mounting seat 5 away from the connecting plate 32, and the protection driving part 4 is drivingly connected to the connecting plate 32 for driving the connecting plate 32 to approach and move away from the mounting seat 5, so that the partition plate 31 can block and avoid the communication port 12b, and the distance measuring sensor 21 is located on the side of the protection driving part 4 close to the communication port 12b.

[0045] In this embodiment, the connecting plate 32 is placed on one side of the mounting seat 5, the protection driving part 4 and the distance measuring sensor 21 are placed on the other side of the mounting seat 5, and at the same time, the partition plate 31 is movably placed in the avoidance gap 5a, making the overall structure relatively compact.

[0046] In one embodiment, the mounting seat 5 is provided with a guiding channel 5b along the direction away from the connecting plate 32. The baffle 3 further includes a guiding rod 33. One end of the guiding rod 33 is connected to the connecting plate 32, and the other end is movably inserted into the guiding channel 5b.

[0047] In this embodiment, the guiding rod 33 is movably inserted into the guiding channel 5b. By the cooperation of the guiding rod 33 and the guiding channel 5b, the movement of the partition plate 31 is guided, avoiding the deviation of the partition plate 31 during the process of approaching and departing from the communication port 12b, and improving the stability of dust prevention for the distance measuring sensor 21.

[0048] In one embodiment, the mounting seat 5 is provided with a driving channel 5c along the direction away from the connecting plate 32; the protection driving part 4 includes a driving cylinder. The driving cylinder is installed on the side of the mounting seat 5 away from the connecting plate 32, and its telescopic rod is inserted into the driving channel 5c and connected to the connecting plate 32.

[0049] In this embodiment, the protection driving part 4 is set in the form of a driving cylinder, and the telescopic rod of the driving cylinder is inserted into the driving channel 5c of the mounting seat 5 to realize the movement of the connecting plate 32 along the direction of approaching and departing from the mounting seat 5, with a stable and reliable structure.

[0050] In one embodiment, the swing arm 1 includes a connecting arm 11 and a distance measuring seat 12. The distance measuring seat 12 is connected to the connecting arm 11 through a screwing member; wherein, the installation cavity 12a and the communication port 12b are formed in the distance measuring seat 12, and the side of the installation cavity 12a close to the connecting arm 11 is open, and the communication port 12b is located on the side of the installation cavity 12a away from the connecting arm 11.

[0051] In this embodiment, the distance measuring seat 12 and the connecting arm 11 are connected through a screwing member. In this way, when the distance measuring sensor 21 is damaged, the screwing member can be loosened to disassemble the distance measuring seat 12 from the connecting arm 11, so as to take out the distance measuring sensor 21 from the open side of the installation cavity 12a for maintenance and replacement, improving the practicability. It should be noted that in this solution, the screwing member is a connecting bolt. The distance measuring seat 12 is provided with a connecting hole, and the connecting arm 11 is provided with a fixing screw hole corresponding to the connecting hole. The connecting bolt is inserted into the connecting hole and screwed into the fixing screw hole to realize the detachable connection between the distance measuring seat 12 and the connecting arm 11.

[0052] It should be noted that in the transmission AC structure, the undulation distance of the workpiece is converted into the X, Y, and Z directions, and the follow-up machining is realized through the actions of the motors in these three directions. Usually, the motor loads in the X, Y, and Z directions of the machine tool are relatively large, and the adjustment sensitivity will be relatively low, making it difficult to achieve very sensitive follow-up machining.

[0053] For this reason, in one of the embodiments, please refer to Figures 5 to 7 , the connecting arm 11 includes a main body arm 13, a C-axis turntable 14, an A-axis turntable 15, and a U-axis seat 16. The main body arm 13 is used to connect the moving mechanism of the laser processing equipment. The C-axis turntable 14 is rotatably installed on the main body arm 13 around the Z-axis. The A-axis turntable 15 is rotatably installed on the C-axis turntable 14 around the X-axis. The U-axis seat 16 is installed on the A-axis turntable 15 and can move radially relative to the A-axis turntable 15; the distance measuring seat 12 is connected to the A-axis turntable 15 through a screw connection, and the laser head 2 is installed on the U-axis seat 16.

[0054] In this embodiment, a U-axis seat 16 is added to the traditional AC structure. Specifically, in the attached drawing example, the moving direction of the U-axis seat 16 is parallel to the laser head 2, and the laser head 2 is always perpendicular to the workpiece surface during the processing. When the workpiece surface undulates, only the position of the U-axis seat 16 needs to be adjusted up and down to achieve follow-up machining, which can quickly realize the adjustment and improve the follow-up efficiency.

[0055] In one of the embodiments, the swing arm 1 further includes a C-axis driving part 17, an A-axis driving part 18, and a U-axis driving part 19. The C-axis driving part 17 is installed on the main body arm 13 and is drivingly connected to the C-axis turntable 14 for driving the C-axis turntable 14 to rotate around the Z-axis. The A-axis driving part 18 is installed on the C-axis turntable 14 and is drivingly connected to the A-axis turntable 15 for driving the A-axis turntable 15 to rotate around the X-axis. The U-axis driving part 19 is installed on the A-axis turntable 15 and is drivingly connected to the U-axis seat 16 for driving the U-axis seat 16 to move radially relative to the A-axis turntable 15.

[0056] In this embodiment, an independent driving part is used to realize the rotation of the laser head 2 following the A-axis turntable 15 and the C-axis turntable 14, and at the same time, the laser head 2 can follow the U-axis seat 16 to translate radially relative to the A-axis turntable 15. In this way, the displacement of the laser head 2 on the A-axis, C-axis, and U-axis is more stable, improving the reliability of the movement of the laser head 2.

[0057] In one of the embodiments, the C-axis driving part 17 includes a C-axis driving motor 171 and a C-axis harmonic reducer. The C-axis driving motor 171, the C-axis harmonic reducer, and the C-axis turntable 14 are sequentially drivingly connected; the A-axis driving part 18 includes an A-axis driving motor 181 and an A-axis harmonic reducer. The A-axis driving motor 181, the A-axis harmonic reducer, and the A-axis turntable 15 are sequentially drivingly connected.

[0058] In this embodiment, an A-axis harmonic reducer is provided at the output end of the A-axis drive motor 181, and a C-axis harmonic reducer is provided at the output end of the C-axis drive motor 171 to reduce the rotational speed and increase the torque, enabling the laser head 2 to rotate stably around the Z-axis and the X-axis.

[0059] In one of the embodiments, a fixed seat 151 is installed on the side of the A-axis turntable 15 away from the C-axis turntable 14; the U-axis drive unit 19 includes a U-axis drive motor 191, a slide rail 192, and a transmission lead screw 193. The U-axis drive motor 191 and the slide rail 192 are installed on the fixed seat 151. The U-axis seat 16 is provided with a chute 16a corresponding to the slide rail 192 and a transmission screw hole 16b corresponding to the transmission lead screw 193. The slide rail 192 is passed through the chute 16a and extends along the radial direction of the A-axis turntable 15. The transmission lead screw 193 is screwed into the transmission screw hole 16b, and its extending direction is the same as that of the slide rail 192 and is connected to the rotating shaft of the U-axis drive motor 191.

[0060] In this embodiment, when the U-axis drive motor 191 drives the transmission lead screw to rotate, the U-axis seat 16 can translate along the radial direction of the A-axis turntable 15 under the cooperation of the transmission lead screw 193, the transmission screw hole 16b, the chute 16a, and the slide rail 192. Thus, when the surface of the workpiece has undulations, the laser head 2 can perform follow-up processing. Moreover, the cooperation between the transmission lead screw 193 and the transmission screw hole 16b makes the movement of the laser head 2 follow the U-axis seat 16 more precise, improving the processing accuracy. At the same time, the load of the U-axis drive motor 191 is very small, and the dynamic performance is good. Specifically, in the attached drawings, the distance measuring seat 12 is fixed on the fixed seat 151 through a screw connection; in addition, there are two groups of the slide rail 192 and the chute 16a respectively.

[0061] In addition, the present invention also provides a laser processing device, and the laser processing device includes the laser head swing mechanism described in any one of the above. It should be noted that the detailed structure of the laser head swing mechanism of the laser processing device can refer to the embodiments of the above laser head swing mechanism, and will not be elaborated here; since the above laser head swing mechanism is used in the laser processing device of the present invention, therefore, the embodiments of the laser processing device of the present invention include all the technical solutions of all the embodiments of the above laser head swing mechanism, and the achieved technical effects are also exactly the same, and will not be elaborated here.

[0062] For a better understanding of the present invention, the following combines Figures 1 to 7 to elaborate on the technical solution of the present invention in detail:

[0063] In the attached drawing example, the moving direction of the U-axis seat 16 is parallel to the laser head 2, and the laser head 2 is always perpendicular to the workpiece surface during the machining process. When the workpiece surface fluctuates, only the position of the U-axis seat 16 needs to be adjusted up and down to achieve follow-up machining. The load of the U-axis drive motor 191 is very small, and its dynamic performance is good, enabling rapid adjustment and improving the follow-up efficiency.

[0064] In addition, the ranging unit is integrated into the ACU structure to achieve machining immediately after ranging, improving the working rhythm. Specifically, since the ranging sensor 21 is a high-precision optoelectronic device, a pneumatic shield is designed for dust isolation. In this solution, before the laser head 2 works, the driving cylinder is first controlled to act, driving the partition plate 31 to avoid the communication port 12b, and then the ranging sensor 21 is controlled to perform ranging. After the ranging is completed, the driving cylinder acts in the reverse direction, driving the partition plate 31 to block the communication port 12b, cutting off the communication port 12b of the installation cavity 12a, and then starting the laser machining, effectively preventing dust from splashing into the installation cavity 12a through the communication port 12b and contaminating the ranging sensor 21.

[0065] The specific implementation manners of the present utility model described above do not constitute a limitation on the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A laser head swing mechanism, characterized in that, Comprising: A swing arm for connecting the moving mechanism of the laser processing equipment, having an installation cavity and a communication port, the communication port communicating the outside with the installation cavity; A laser head mounted on the swing arm; A ranging sensor mounted in the installation cavity, and its ranging probe facing the communication port; A baffle movably mounted on the swing arm and capable of blocking and avoiding the communication port during its movement; And A protection driving part mounted on the swing arm and drivingly connected to the baffle for driving the baffle to switch between positions of blocking and avoiding the communication port.

2. The laser head swing mechanism according to claim 1, characterized in that, The laser head swing mechanism further includes a mounting seat, the mounting seat being mounted in the installation cavity and spaced from the communication port to form an avoidance gap; The baffle includes a partition plate and a connecting plate, the partition plate being disposed in the installation cavity and located within the avoidance gap, and being connected to the connecting plate at an angle, the connecting plate being located on one side of the mounting seat; The protection driving part and the ranging sensor are mounted on the side of the mounting seat away from the connecting plate, and the protection driving part is drivingly connected to the connecting plate for driving the connecting plate to approach and move away from the mounting seat, so that the partition plate can block and avoid the communication port, and the ranging sensor is located on the side of the protection driving part close to the communication port.

3. The swing mechanism of the laser head according to claim 2, characterized in that The mounting seat is provided with a guiding channel in a direction away from the connecting plate, and the baffle further includes a guiding rod, one end of the guiding rod being connected to the connecting plate and the other end movably passing through the guiding channel.

4. The laser head swing mechanism according to claim 2 or 3, characterized in that, The mounting seat is provided with a driving channel in a direction away from the connecting plate; The protection driving part includes a driving cylinder, the driving cylinder being mounted on the side of the mounting seat away from the connecting plate, and its telescopic rod passing through the driving channel and connected to the connecting plate.

5. The laser head swing mechanism according to claim 1, characterized in that, The swing arm includes a connecting arm and a ranging seat, the ranging seat being connected to the connecting arm by a screwing member; Wherein, the installation cavity and the communication port are formed in the ranging seat, and the side of the installation cavity close to the connecting arm is open, and the communication port is located on the side of the installation cavity away from the connecting arm.

6. The swing mechanism of the laser head according to claim 5, characterized in that The connecting arm includes a main body arm, a C-axis turntable, an A-axis turntable and a U-axis seat, the main body arm being used for connecting the moving mechanism of the laser processing equipment, the C-axis turntable being rotatably mounted on the main body arm around the Z axis, the A-axis turntable being rotatably mounted on the C-axis turntable around the X axis, and the U-axis seat being mounted on the A-axis turntable and capable of moving radially relative to the A-axis turntable; The ranging seat is connected to the A-axis turntable by a screwing member, and the laser head is mounted on the U-axis seat.

7. The swing mechanism of the laser head according to claim 6, wherein The swing arm further includes a C-axis driving part, an A-axis driving part and a U-axis driving part, the C-axis driving part being mounted on the main body arm and drivingly connected to the C-axis turntable for driving the C-axis turntable to rotate around the Z axis, the A-axis driving part being mounted on the C-axis turntable and drivingly connected to the A-axis turntable for driving the A-axis turntable to rotate around the X axis, and the U-axis driving part being mounted on the A-axis turntable and drivingly connected to the U-axis seat for driving the U-axis seat to move radially relative to the A-axis turntable.

8. The swing mechanism of the laser head according to claim 7, wherein The C-axis driving part includes a C-axis driving motor and a C-axis harmonic reducer, and the C-axis driving motor, the C-axis harmonic reducer and the C-axis turntable are sequentially connected in transmission; The A-axis driving part includes an A-axis driving motor and an A-axis harmonic reducer, and the A-axis driving motor, the A-axis harmonic reducer and the A-axis turntable are sequentially connected in transmission.

9. The swing mechanism of the laser head according to claim 7, wherein, A fixed seat is installed on one side of the A-axis turntable away from the C-axis turntable; The U-axis driving part includes a U-axis driving motor, a slide rail and a transmission lead screw. The U-axis driving motor and the slide rail are installed on the fixed seat. The U-axis seat is provided with a sliding groove corresponding to the slide rail and a transmission screw hole corresponding to the transmission lead screw. The slide rail is passed through the sliding groove and extends along the radial direction of the A-axis turntable. The transmission lead screw is screwed in the transmission screw hole, and its extending direction is the same as that of the slide rail and is connected to the rotating shaft of the U-axis driving motor.

10. A laser processing device, characterized in that, It includes the laser head swing mechanism according to any one of claims 1-9.

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