Laser cutting head and laser cutting equipment

Abstract

The utility model relates to a laser cutting head and laser cutting equipment, the laser cutting head comprises a first rotation assembly, a light path reflection device and a cutting assembly, the first rotation assembly is connected with the cutting assembly, and the first rotation assembly is provided with an incident port capable of receiving laser emitted by a laser device; a first light channel communicated with the incident port is formed in the first rotation assembly, a second light channel is formed in the cutting assembly, the first light channel is communicated with the second light channel, the light path reflection device comprises two first light path reflection assemblies, one first light path reflection assembly is arranged on the first rotation assembly, and the other first light path reflection assembly is arranged on the cutting assembly. One first light path reflection assembly is arranged on the cutting assembly and located at the communicating position of the first light channel and the incident port, the other first light path reflection assembly is arranged on the cutting assembly and located at the end, close to the first light channel, of the second light channel, and the first light path reflection assembly comprises a reflector and an angle adjusting mechanism capable of adjusting the deflection angle of the reflector. The laser cutting head solves the problem that an existing laser cutting head cannot calibrate the reflecting mirror in real time.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting equipment technical field especially, relates to a laser cutting head and laser cutting equipment. BACKGROUND

[0002] Because the laser cutting head center contains laser light path, when the cutting head is controlled to move or rotate, the laser light path needs to be kept in the center part, the existing cutting head generally fixes the angle of each mirror module in the production stage, makes the laser light path be in the center part, but the connection of each part will appear slight looseness after long time use, leads to the laser light path to appear deviation, influences the effect of laser cutting. SUMMARY

[0003] The utility model discloses a laser cutting head and laser cutting equipment, which aims to solve the problem of deviation of laser light path caused by the inability to real-time calibrate the mirror of the existing laser cutting head.

[0004] To achieve the above object, the utility model provides a laser cutting head, which comprises a first rotating assembly, a light path reflection device and a cutting assembly, the first rotating assembly is connected with the cutting assembly and drives the cutting assembly to rotate around a first axis, an incident port for receiving laser emitted by a laser emitter is arranged on the first rotating assembly, a first light channel is formed in the first rotating assembly and communicates with the incident port, a second light channel is formed in the cutting assembly, the first light channel communicates with the second light channel, the light path reflection device comprises two first light path reflection assemblies, one of the first light path reflection assemblies is arranged on the first rotating assembly and located at the communication position of the first light channel and the incident port, the other first light path reflection assembly is arranged on the cutting assembly and located at one end of the second light channel close to the first light channel, and the first light path reflection assembly comprises a mirror and an angle adjusting mechanism capable of adjusting the deflection angle of the mirror.

[0005] According to some embodiments of the utility model, the angle adjusting mechanism comprises a mirror frame and three adjusting screws, the mirror frame is arranged on the first rotating assembly or the cutting assembly, one corner of the mirror is movably connected to the mirror frame, and the three adjusting screws are arranged at the positions of the other three corners of the mirror, each adjusting screw is connected with one of the mirror frame and the mirror and connected with the other through a thread.

[0006] According to some embodiments of the utility model, the angle adjusting mechanism further comprises a plurality of tension springs, each of the tension springs is arranged at intervals along the circumference of the mirror, one end of each of the tension springs is connected with the mirror, the other end of each of the tension springs is connected with the mirror holder, the mirror holder is provided with an opening corresponding to the other three corners of the mirror, each of the adjusting screws is threadedly connected with the mirror holder, and the abutting end of each of the adjusting screws abuts against the mirror through the opening.

[0007] According to some embodiments of the utility model, the second rotary assembly is connected with the first rotary assembly and drives the first rotary assembly to rotate around a second axis, the second axis is perpendicular to the first axis, a third light channel is formed in the second rotary assembly, and the third light channel is in communication with the first light channel through the incident port.

[0008] According to some embodiments of the utility model, the linear driving assembly is connected with the second rotary assembly and drives the second rotary assembly to move in the z direction, so as to drive the cutting assembly to move in the z direction.

[0009] According to some embodiments of the utility model, the linear driving assembly comprises a driving part, a movable part and a mounting seat fixed on the equipment body, the second rotary assembly is mounted on the movable part, the movable part is provided with a guide rail extending in the z direction, the mounting seat is provided with a sliding block, the driving part can drive the sliding block to move on the guide rail, so that the movable part moves in the z direction relative to the mounting seat, and the second rotary assembly moves in the z direction.

[0010] According to some embodiments of the utility model, the optical path reflection device further comprises a second optical path reflection assembly, the second optical path reflection assembly is fixed on the mounting seat and located at one end of the third light channel away from the first light channel.

[0011] According to some embodiments of the utility model, the protective cover body is connected with the second optical path reflection assembly at one end and connected with the second rotary assembly at the other end, the protective cover body is telescopic in the z direction, and the third light channel extends into the protective cover body.

[0012] According to some embodiments of the utility model, the linear driving assembly further comprises a limiting part, the limiting part is arranged on the top of the movable part, and the limiting part has a limiting wall which can abut against the mounting seat to limit the downward movement of the movable part.

[0013] Furthermore, the utility model also includes a kind of laser cutting equipment, including equipment ontology and the laser cutting head as described in any one of above, the laser that the laser emits can sequentially pass through the entrance, the first optical channel and the second optical channel, and output from the cutting assembly, cutting station is equipped on the equipment ontology, the laser cutting head is installed on the equipment ontology, the cutting station is in the working range of the cutting assembly of the laser cutting head.

[0014] The utility model at least has following beneficial effects:

[0015] In the utility model, the cutting assembly is rotated around first axis by the first rotation component, the rotation control of the cutting assembly is realized, the laser that laser emits can sequentially pass through the entrance, the first optical channel and the second optical channel under the reflection of the optical path reflection device, and output from the cutting assembly, when the cutting assembly is rotated under control, the optical path of laser needs to keep in central part, the deflection angle of the reflector can be adjusted in real time by the angle adjusting mechanism, so as to change the reflected optical path of laser, so that the optical path keeps in central part all the time, and the effect of laser cutting is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0017] Figure 1 The structure diagram of the laser cutting head provided in the embodiments of the utility model is shown in the drawings.

[0018] Figure 2 The front view of the laser cutting head in the utility model is shown in the drawings. Figure 1

[0019] The sectional view of A-A in the utility model is shown in the drawings. Figure 3 Figure 1 The structure diagram of the first optical path reflection component in the utility model is shown in the drawings.

[0020] Figure 4 Figure 1 The structure diagram of the second optical path reflection component in the utility model is shown in the drawings.

[0021] Explanation of reference signs:

[0022] ​​100 - laser cutting head; 1 - second rotary assembly; 11 - entrance; 12 - first light channel; 13 - first housing; 14 - first hollow rotating platform; 15 - motor; 2 - cutting assembly; 21 - second light channel; 22 - focusing mirror; 23 - cutting head; 3 - light path reflecting device; 31 - first light path reflecting assembly; 311 - reflecting mirror; 312 - angle adjusting mechanism; 3121 - mirror frame; 3122 - adjusting screw; 3123 - tension spring; 32 - second light path reflecting assembly; 4 - second rotary assembly; 41 - third light channel; 42 - second housing; 43 - second hollow rotating platform; 44 - rotating mandrel; 5 - linear drive assembly; 51 - driving part; 52 - movable part; 521 - guide rail; 53 - mounting seat; 54 - limiting part; 6 - protective cover; 7 - flexible bellows. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0024] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0025] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0026] The present application provides a laser cutting head and a laser cutting device, Figures 1 to 4 The present application provides a specific embodiment of a laser cutting head.

[0027] As Figures 1 to 3 The utility model discloses a laser cutting head 100, including first rotation subassembly 1, optical path reflection device 3 and cutting assembly 2, first rotation subassembly 1 with cutting assembly 2 is connected, and drives cutting assembly 2 rotates around first axis, be equipped with the entrance 11 of receiving laser emission laser on first rotation subassembly 1, the first light channel 12 that forms with the entrance 11 intercommunication is formed in first rotation subassembly 1, the second light channel 21 that forms is in cutting assembly 2, first light channel 12 with second light channel 21 intercommunication, optical path reflection device 3 includes two first optical path reflection subassembly 31, one of first optical path reflection subassembly 31 is located on first rotation subassembly 1, and is located the intercommunication position of first light channel 12 with entrance 11, another first optical path reflection subassembly 31 is located on cutting assembly 2, and is located second light channel 21 near one end of first light channel 12, first optical path reflection subassembly 31 includes mirror 311 and the angle adjusting mechanism 312 of adjustable mirror 311 deflection angle.

[0028] In the utility model, through first rotation subassembly 1 drive cutting assembly 2 rotates around first axis, realized the rotation control of cutting assembly 2, and the laser that laser emits can successively pass through entrance 11, first light channel 12 and second light channel 21 under the reflection of optical path reflection device 3, and output from cutting assembly 2, when cutting assembly 2 is controlled to rotate, the optical path of laser needs to keep in central part, through angle adjusting mechanism 312 can real -time adjustment mirror 311 deflection angle, by this change the reflection optical path of laser, make the optical path keep in central part all the time, guarantee the effect of laser cutting.

[0029] The specific structure of angle adjusting mechanism 312 is not limited, as long as angle adjusting mechanism 312 can adjust the deflection angle of mirror 311, for example, in some embodiments, as Figure 4As shown, the angle adjustment mechanism 312 comprises a mirror frame 3121 and three adjusting screws 3122, the mirror frame 3121 is arranged on the first rotary assembly 1 or the cutting assembly 2, one corner of the mirror 311 is movably connected to the mirror frame 3121, and the three adjusting screws 3122 are arranged corresponding to the other three corners of the mirror 311. The mirror frame 3121 and the mirror 311, each of the adjusting screws 3122 is connected to one of the mirror frame 3121 and the mirror 311, and the other is connected through threads. In this way, by turning the adjusting screws 3122, the distance between the corresponding corner of the mirror 311 and the mirror frame 3121 can be adjusted, and the four-way adjustment of the mirror 311 can be realized by the cooperation of the three adjusting screws 3122.

[0030] Further, in some embodiments, as shown in Figure 4 As shown, the angle adjustment mechanism 312 further comprises a plurality of tension springs 3123, each of the tension springs 3123 is arranged along the circumference of the mirror 311, one end is connected to the mirror 311, and the other end is connected to the mirror frame 3121. The mirror frame 3121 is provided with an opening corresponding to the other three corners of the mirror 311, each of the adjusting screws 3122 is threadedly connected to the mirror frame 3121, and the abutting end of the adjusting screw 3122 abuts against the mirror 311 through the opening. In this way, by pulling the mirror 311 with the plurality of tension springs 3123, the mirror 311 is prevented from being separated from the mirror frame 3121 during adjustment of the deflection angle, then by turning each of the adjusting screws 3122 to make the abutting end abut against the mirror 311, and continuing to turn the adjusting screw 3122 to make the abutting end move relative to the mirror frame 3121, the four-way adjustment of the mirror 311 can be realized.

[0031] In order to increase the working range of the cutting assembly 2, in some embodiments, as shown in Figure 3 As shown, the laser cutting head 100 further comprises a second rotary assembly 4, which is connected to the first rotary assembly 1 and drives the first rotary assembly 1 to rotate around a second axis, the second axis is perpendicular to the first axis, and a third light channel 41 is formed in the second rotary assembly 4, which communicates with the first light channel 12 through the incident port 11. By driving the first rotary assembly to rotate around the second axis by the second rotary assembly, and driving the cutting assembly to rotate around the first axis by the first rotary assembly, the control of the central rotation and the normal rotation of the cutting assembly can be realized, and the working range of the cutting assembly 2 is increased to adapt to different sizes of parts to be cut.

[0032] Specifically, in some embodiments, as shown in Figure 3As shown, the second rotary assembly 4 comprises a second housing 42, a second hollow rotating platform 43, and a rotating shaft 44 arranged in the second housing 42 and connected with one end of the second hollow rotating platform 43, and the other end of the second hollow rotating platform 43 is connected with the first rotary assembly 1, and the rotating shaft 44 can drive the second hollow rotating platform 43 to rotate around the second axis, so as to drive the first rotary assembly 1 to rotate synchronously around the second axis.

[0033] Similarly, as shown in the figure, the first rotary assembly 1 comprises a first housing 13, a first hollow rotating platform 14, and a motor 15 arranged at one end of the first housing 13, and the other end of the first hollow rotating platform 14 is connected with the cutting assembly 2 and the shaft of the motor 15, and the motor 15 can drive the first hollow rotating platform 14 to rotate around the first axis, so as to drive the cutting assembly 2 to rotate synchronously around the first axis. Figure 3

[0034] Since the motor 15 will rotate with the first housing 13 under the drive of the rotating shaft 44, in order to avoid the cable of the motor 15 being scratched by the to-be-cut component during the movement and being damaged, in some embodiments, as shown in the figure, a flexible bellows 7 is arranged outside the cable of the motor 15, one end of the flexible bellows 7 is connected with the second housing 42, and the other end is connected with the first housing 13, so as to protect the cable of the motor 15. Figure 1

[0035] Preferably, in some embodiments, as shown in the figure, the cutting assembly 2 comprises a focusing mirror 22 and a cutting head 43, the focusing mirror 22 is arranged on the second light channel 21, and the cutting head 43 is arranged at one end of the second light channel 21 away from the first light channel 12. The laser emitted by the laser is focused by the focusing mirror 22, and the focused laser is output from the cutting head 43, so as to improve the cutting effect. Figure 3

[0036] For different sizes and shapes of to-be-cut components, the cutting height of the cutting head 43 of the cutting assembly 2 needs to be set differently, therefore, in some embodiments, as shown in the figures, the laser cutting head 100 further comprises a linear drive assembly 5 connected with the second rotary assembly 4 and driving the second rotary assembly 4 to move in the z direction, so as to drive the cutting assembly 2 to move in the z direction. In this way, the cutting assembly 2 is driven by the linear drive assembly 5 to move in the z direction, so as to change the cutting height of the cutting head 43, thereby adapting to the cutting requirements of different sizes and shapes of to-be-cut components. Figure 1 Figure 2 ​​​​​

[0037] The specific structure of the linear driving assembly 5 is not limited, as long as it can drive the second rotating assembly 4 to move in the z direction. For example, in some embodiments, as shown in Figure 1 and Figure 2 The linear driving assembly 5 includes a driving part 51, a movable part 52, and a mounting seat 53 fixed on the equipment body. The second rotating assembly 4 is mounted on the movable part 52. The movable part 52 is provided with a guide rail 521 extending in the z direction. The mounting seat 53 is provided with a sliding block. The driving part 51 can drive the sliding block to move on the guide rail 521, so that the movable part 52 moves in the z direction relative to the mounting seat 53, and drives the second rotating assembly 4 to move in the z direction. By arranging the guide rail 521 on the movable part 52 and the sliding block on the mounting seat 53, the guide rail 521 moves with the movable part 52 and does not interfere with the positioning tool and the part to be cut below the mounting seat 53, so that the laser cutting head 100 can be adapted to larger size parts to be cut, and the applicability of the laser cutting head 100 is improved.

[0038] Specifically, the driving part 51 is a linear motor with a brake function, which can realize self-locking function when the driving part 51 stops running.

[0039] Further, in some embodiments, as shown in Figure 3 The mounting seat 53 is arranged in a ring shape, and the movable part 52 is movably arranged in the mounting seat 53. In this way, since the second rotating assembly 4 is connected with the movable part 52, when the movable part 52 moves upward excessively, the second rotating assembly 4 will abut against the bottom of the mounting seat 53, which plays a limiting role and prevents the movable part 52 from being disconnected from the mounting seat 53.

[0040] Similarly, in some embodiments, as shown in Figure 1 The linear driving assembly 5 further includes a limiting part 54 arranged on the top of the movable part 52. The limiting part 54 has a limiting wall which can abut against the top of the mounting seat 53 to limit the downward movement of the movable part 52. In this way, the limiting part 54 can limit the downward movement of the movable part 52 by abutting against the top of the mounting seat 53, preventing the movable part 52 from moving downward excessively, which can cause the cutting head 43 of the cutting assembly 2 to collide with the part to be cut and be damaged.

[0041] Only when the laser is arranged directly above the second rotating assembly 4, the laser can directly enter the third light channel 41 in the second rotating assembly 4. In order to adapt to different arrangement positions of the laser, in some embodiments, as shown inFigure 3 As shown in the figure, the light path reflection device 3 further comprises a second light path reflection assembly 32, which is fixed on the mounting seat 53 and located at the end of the third light channel 41 away from the first light channel 12. In this way, the laser emitted by the laser can be reflected into the third light channel 41 of the second rotary assembly 4 through the second light path reflection assembly 32.

[0042] Since the second rotary assembly 4 moves in the z direction under the drive of the linear drive assembly 5, there is a large gap between the second light path reflection assembly 32 and the second rotary assembly 4. In order to avoid dust entering the second rotary assembly 4 from the gap, in some embodiments, as shown in the figure, Figure 1 and Figure 3 As shown in the figure, the laser cutting head 100 further comprises a protective cover 6, one end of which is connected with the second light path reflection assembly 32 and the other end of which is connected with the second rotary assembly 4. The protective cover 6 is arranged in an extendable and retractable manner in the z direction, and the third light channel 41 extends into the protective cover 6. By arranging the protective cover 6 between the second light path reflection assembly 32 and the second rotary assembly 4, dust can be prevented from entering the second rotary assembly 4 from the gap, and the optical path is protected from being contaminated by dust.

[0043] In addition, the utility model further provides a kind of laser cutting equipment, including equipment body, laser and the laser cutting head 100, the laser emitted by laser can be sequentially through the entrance 11, the first light channel 12 and the second light channel 21, and from the cutting assembly 2 output, the equipment body is equipped with cutting station, the laser cutting head 100 is installed on the equipment body, and the cutting station is in the working range of the cutting assembly 2 of the laser cutting head 100.

[0044] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A laser cutting head, characterized in that, The device includes a first rotating assembly, an optical path reflecting device, and a cutting assembly. The first rotating assembly is connected to the cutting assembly and drives the cutting assembly to rotate around a first axis. The first rotating assembly has an entrance port for receiving laser light emitted from a laser. A first optical channel communicating with the entrance port is formed within the first rotating assembly. A second optical channel is formed within the cutting assembly, and the first optical channel communicates with the second optical channel. The optical path reflecting device includes two first optical path reflecting assemblies. One first optical path reflecting assembly is disposed on the first rotating assembly and located at the communication position between the first optical channel and the entrance port. The other first optical path reflecting assembly is disposed on the cutting assembly and located at the end of the second optical channel near the first optical channel. Each first optical path reflecting assembly includes a reflector and an angle adjustment mechanism for adjusting the deflection angle of the reflector.

2. The laser cutting head as described in claim 1, characterized in that, The angle adjustment mechanism includes a mirror frame and three adjusting screws. The mirror frame is mounted on the first rotating assembly or the cutting assembly. One corner of the reflector is movably connected to the mirror frame. The three adjusting screws are set at the other triangular positions of the reflector. Each adjusting screw is connected to one of the mirror frame and the reflector, and is connected to the other by a thread.

3. The laser cutting head as described in claim 2, characterized in that, The angle adjustment mechanism also includes multiple tension springs, each tension spring being arranged at intervals along the circumference of the reflector, with one end connected to the reflector and the other end connected to the mirror frame. The mirror frame has an opening at a triangular position corresponding to the reflector. Each adjusting screw is threadedly connected to the mirror frame, and the abutting end of the adjusting screw passes through the opening and abuts against the reflector.

4. The laser cutting head as described in claim 1, characterized in that, It also includes a second rotating component, which is connected to the first rotating component and drives the first rotating component to rotate around a second axis, which is perpendicular to the first axis. A third optical channel is formed inside the second rotating component, and the third optical channel is connected to the first optical channel through the entrance port.

5. The laser cutting head as described in claim 4, characterized in that, It also includes a linear drive component, which is connected to the second rotary component and drives the second rotary component to move in the z-direction, thereby causing the cutting component to move in the z-direction.

6. The laser cutting head as described in claim 5, characterized in that, The linear drive assembly includes a drive unit, a movable unit, and a mounting base fixed to the device body. The second rotary assembly is mounted on the movable unit. The movable unit is provided with a guide rail extending in the z-direction. The mounting base is provided with a slider. The drive unit can drive the slider to move on the guide rail, so that the movable unit moves relative to the mounting base in the z-direction, thereby driving the second rotary assembly to move in the z-direction.

7. The laser cutting head as described in claim 6, characterized in that, The optical path reflection device further includes a second optical path reflection component, which is fixed on the mounting base and located at the end of the third optical channel away from the first optical channel.

8. The laser cutting head as described in claim 7, characterized in that, It also includes a protective cover, one end of which is connected to the second optical path reflection component and the other end of which is connected to the second rotation component. The protective cover is extended and retracted in the z-direction, and the third optical channel extends into the protective cover.

9. The laser cutting head as described in claim 6, characterized in that, The linear drive assembly further includes a limiting part located at the top of the movable part, the limiting part having a limiting wall that can abut against the mounting base to restrict the downward movement of the movable part.

10. A laser cutting device, characterized in that, The device includes a device body, a laser, and a laser cutting head as described in any one of claims 1 to 9. The laser emitted by the laser can pass sequentially through the entrance port, the first optical channel, and the second optical channel, and be output from the cutting assembly. The device body is provided with a cutting station, the laser cutting head is mounted on the device body, and the cutting station is within the working range of the cutting assembly of the laser cutting head.

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