CN114985964A - Laser cutting equipment - Google Patents
Laser cutting equipment Download PDFInfo
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- CN114985964A CN114985964A CN202210597359.6A CN202210597359A CN114985964A CN 114985964 A CN114985964 A CN 114985964A CN 202210597359 A CN202210597359 A CN 202210597359A CN 114985964 A CN114985964 A CN 114985964A
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- China
- Prior art keywords
- laser
- assembly
- workpiece
- beam combining
- dust extraction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses laser cutting equipment which comprises a rack, a flow channel assembly, a laser head, a beam combining structure and a visual detection assembly. Be equipped with the processing station in the frame, be equipped with the tool that is used for fixed work piece on the processing station, the runner subassembly includes transport mechanism and swager structure, the runner subassembly is located the frame, transport mechanism is used for transmitting the work piece to the processing station, swager structure can be relative transport mechanism descending motion is in order to be located the work piece processing station, the laser head is located the frame, and be located the top of runner subassembly, the laser head includes the mirror and the field lens that shake that set gradually along laser propagation direction, it locates to close the bundle structure the income light side of the mirror that shakes, visual detection subassembly is located close one side of restrainting the structure, visual detection subassembly detect the light path with be in close the bundle structure with between the field lens laser light path coincidence. The technical scheme of the invention aims to improve the processing precision of the workpiece.
Description
Technical Field
The invention relates to the technical field of laser processing equipment, in particular to laser cutting equipment.
Background
Because many tiny electronic devices are integrated on the circuit board, the precision requirement of the cutting equipment is high in order to avoid damage to the electronic devices, and the cutting precision of the circuit board is improved. Especially, in the automatic cutting equipment, the cutting precision of the circuit board can be affected by the clamping and positioning precision, the laser optical path structure, the precision of the detection system and the like in the circuit board transmission process.
Disclosure of Invention
The invention mainly aims to provide laser cutting equipment, and aims to improve the machining precision of the laser cutting equipment and further improve the cutting precision of a workpiece.
In order to achieve the above object, the present invention provides a laser cutting apparatus, comprising:
the device comprises a rack, wherein a machining station is arranged on the rack, and a jig for fixing a workpiece is arranged on the machining station;
the runner assembly comprises a conveying mechanism and a pressing mechanism, the runner assembly is arranged on the rack, the conveying mechanism is used for conveying the workpiece to a machining station, and the pressing mechanism can move downwards relative to the conveying mechanism so as to position the workpiece at the machining station;
the laser head is arranged on the rack and positioned above the flow channel assembly, and comprises a galvanometer and a field lens which are sequentially arranged along the laser propagation direction;
the beam combining structure is arranged on the light incidence side of the galvanometer; and
the visual detection assembly is arranged on one side of the beam combining structure, and a detection light path of the visual detection assembly is overlapped with a laser light path between the beam combining structure and the field lens.
In an embodiment of the present invention, the laser head further includes a laser, a beam expander, and at least one reflection device, and the laser, the beam expander, the reflection device, the beam combining structure, the galvanometer, and the field lens are sequentially disposed along a propagation direction of a laser light path, respectively.
In an embodiment of the present invention, the laser cutting apparatus further includes a power detection assembly, the power detection assembly includes a first power meter and a second power meter, the first power meter is disposed at the light exit of the laser, and the second power meter is disposed in front of the processing station.
In an embodiment of the invention, the laser cutting equipment further comprises a lifting assembly and a distance measuring assembly, the lifting assembly is arranged on the frame, the laser head, the beam closing and combining structure and the distance measuring assembly are all arranged on the lifting assembly, and the lifting assembly simultaneously drives the distance measuring assembly and the laser head to move up and down relative to the processing station.
In an embodiment of the present invention, the bundling structure includes:
the beam combining mirror is provided with a light transmitting surface and a reflecting surface which are oppositely arranged, and the reflecting surface of the beam combining mirror faces the vibrating mirror;
the beam combining mirror fixing plate is fixed on the beam combining mirror fixing plate; and
the beam combining lens seat is internally provided with an installation space, the beam combining lens fixing plate is arranged in the installation space, the beam combining lens seat is also provided with a detection light path opening, and the detection light path is reflected by the reflecting surface and then emitted to the visual detection assembly through the detected light path opening.
In an embodiment of the present invention, the transfer mechanism includes:
the driving motor is arranged on the rack;
the driving wheel is in transmission connection with a driving shaft of the driving motor;
the driven wheels are arranged at intervals along the conveying direction of the conveying mechanism; and
and the conveying belt is respectively connected with the driving wheel and the driven wheels.
In an embodiment of the present invention, the pressing mechanism includes:
the pressing driving piece is arranged on the rack; and
the material pressing driving piece drives the material pressing plate to move towards the conveying mechanism so as to fix the workpiece on the conveying mechanism.
In an embodiment of the present invention, the flow channel assembly further includes:
a feed inductor located on a feed side of the processing station; and
the material blocking mechanism is positioned on the discharge side of the machining station and is used for blocking a workpiece to the machining station;
the material blocking mechanism comprises a material blocking driving piece and a material blocking block, the material blocking driving piece is arranged on the rack, the material blocking block is connected with the material blocking driving piece, the material blocking driving piece drives the material blocking block to be abutted against a workpiece, and the workpiece is blocked on the machining station.
In an embodiment of the present invention, the flow channel assembly further includes a width adjustment mechanism, the width adjustment mechanism includes:
the sliding rail is fixed on the rack, and an included angle is formed between the extending direction of the sliding rail and the conveying direction of the conveying mechanism;
the mounting seat is connected with the sliding rail in a sliding manner;
and the locking device is connected with the mounting seat and is used for limiting the mounting seat to slide relative to the sliding rail.
In an embodiment of the present invention, the laser cutting apparatus further includes a dust extraction assembly, where the dust extraction assembly includes a first dust extraction structure and a second dust extraction structure;
the first dust extraction structure is connected to the field lens and located below the field lens, the first dust extraction structure is provided with a first dust extraction port and a first dust outlet which are communicated, and the first dust extraction port faces the jig;
the second dust extraction structure is provided with a second dust extraction port and a second dust outlet which are communicated, and the second dust extraction port faces the jig.
The laser cutting equipment provided by the technical scheme of the invention comprises a frame, a flow channel assembly, a laser head, a beam combining structure and a visual detection assembly. Be equipped with the tool that is used for fixed work piece on the processing station of frame, the runner subassembly includes transport mechanism and swager, transport mechanism is used for transmitting the work piece to the processing station, the swager can be relative transport mechanism downstream, in order to be located the work piece on the tool of processing station, the laser head is located the top of runner subassembly, the laser head includes the mirror and the field lens that shake that set gradually along laser propagation direction, it locates the income light side of the mirror that shakes to close the beam structure, one side of closing the beam structure is located to visual detection subassembly, visual detection subassembly's detection light path and the coincidence of laser light path that is in between closing beam structure and the field lens. Before machining, a workpiece is conveyed to a machining station through the conveying mechanism, then the material pressing mechanism moves from top to bottom to press and fix the workpiece on a jig on the machining station, so that the workpiece is positioned, and the workpiece is machined by the laser head conveniently. Because the workpiece is compressed tightly on the processing station by the material pressing mechanism, the workpiece is not separated from the conveying mechanism in the process, the position of the workpiece cannot deviate relative to the conveying mechanism, and the workpiece can be directly processed without secondary positioning. After the workpiece is machined, the workpiece does not need to be moved to the conveying mechanism again, the situation that the position of the workpiece deviates relative to the position of the conveying mechanism due to the separation of the workpiece and the conveying mechanism is avoided, the precision of the positions of the workpiece before and after machining is ensured, and the guarantee is provided for the subsequent machining of the workpiece. After the workpiece is positioned, the laser light path is processed by a galvanometer and a field lens in sequence and then is emitted to the workpiece to be processed; meanwhile, the light on the surface of the processed workpiece is reflected by the field lens, the galvanometer and the beam combiner in sequence and then reaches the visual detection system to form a detection image. In the technical scheme of the invention, the beam combination structure is arranged, so that the light paths of the detection light and the laser light between the beam combination structure and the galvanometer and between the galvanometer and the field lens are superposed, namely the processing point of the laser light and the detection point of the visual detection system are always the same point, and the problem of inaccuracy of detection caused by different processing points of the laser light and detection points of the visual detection system is solved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a laser cutting apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of a distance measuring assembly according to the present invention;
FIG. 3 is a schematic structural view of a flow channel assembly according to the present invention;
FIG. 4 is a schematic structural diagram of an optical circuit assembly according to the present invention;
FIG. 5 is a schematic structural diagram of a beam combining structure according to the present invention;
fig. 6 is a schematic structural view of the dust extraction assembly of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, descriptions such as "first", "second", etc. in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides laser cutting equipment.
Referring to fig. 1 to 6, fig. 1 is a schematic structural view of a laser cutting apparatus according to the present invention; FIG. 2 is a schematic structural diagram of a distance measuring assembly according to the present invention; FIG. 3 is a schematic structural view of a flow channel assembly according to the present invention; FIG. 4 is a schematic diagram of an optical circuit assembly according to the present invention; FIG. 5 is a schematic structural view of a beam combining structure according to the present invention; fig. 6 is a schematic structural view of the dust extraction assembly of the present invention.
In the embodiment of the invention, as shown in fig. 1, 3 and 4, the laser cutting equipment 100 includes a frame 10, a runner assembly 20, a laser head 30, a beam combining structure 33 and a visual detection assembly 35, wherein a processing station 11 is arranged on the frame 10, and a fixture 13 for fixing a workpiece is arranged on the processing station 11; the runner assembly 20 comprises a conveying mechanism 21 and a pressing mechanism 22, the runner assembly 20 is arranged on the frame 10, the conveying mechanism 21 is used for conveying the workpiece to the processing station 11, and the pressing mechanism 22 can move downwards relative to the conveying mechanism 21 to position the workpiece at the processing station 11; the laser head 30 is arranged on the machine frame 10 and is positioned above the runner assembly 20, and the laser head 30 comprises a galvanometer 311 and a field lens 313 which are sequentially arranged along the laser propagation direction; the beam combining structure 33 is arranged on the light incident side of the galvanometer 311; the visual detection component 35 is arranged on one side of the beam combining structure 33, and a detection light path of the visual detection component 35 is overlapped with the laser light path between the beam combining structure 33 and the field lens 313.
Before laser processing of the laser cutting equipment 100 according to the technical scheme of the invention, a workpiece is firstly conveyed to the processing station 11 through the conveying mechanism 21, and then the pressing mechanism 22 moves from top to bottom to press and fix the workpiece on the jig 13 of the processing station 11, so that the workpiece is positioned, and the laser head 30 can process the workpiece conveniently. Because the workpiece is pressed on the processing station 11 by the material pressing mechanism 22, in the process, the workpiece is not separated from the conveying mechanism 21, the position of the workpiece does not deviate relative to the conveying mechanism 21, and the workpiece can be directly processed without secondary positioning. After the workpiece is machined, the workpiece does not need to be moved to the conveying mechanism 21 again, the situation that the position of the workpiece deviates relative to the position of the conveying mechanism 21 due to the separation of the workpiece and the conveying mechanism 21 is avoided, the precision of the position of the workpiece before and after machining is ensured, and the guarantee is provided for the subsequent machining of the workpiece. After the workpiece is positioned, the laser light path is processed by the galvanometer 311 and the field lens 313 in sequence and then emitted to the workpiece to be processed; meanwhile, the light beam on the surface of the workpiece to be processed reaches the visual inspection system 35 after being reflected by the field lens 313, the galvanometer 311 and the beam combiner 331 in sequence, so as to form an inspection image. In the technical scheme of the invention, the beam combination structure 33 is arranged, so that the light paths of the detection light and the laser light between the beam combination structure 33 and the galvanometer 311 and between the galvanometer 311 and the field lens 313 coincide, that is, the processing point of the laser light and the detection point of the visual detection system 35 are always the same point, and the problem of inaccuracy of detection caused by different processing points of the laser light and the detection points of the visual detection system 35 cannot be caused.
The flow channel assembly 20 provided by the invention can be used for laser processing equipment, the laser processing equipment can be laser cutting equipment 100, laser marking equipment or laser cleaning equipment, and the like, the laser cutting equipment 100 is provided with a processing station 11, and the flow channel assembly 20 is arranged on a rack 10. The laser cutting device 100 is provided with a jig 13, the workpiece is supported and fixed by the jig 13, and the pressing mechanism 22 can press and fix the jig 13 conveyed to the processing station 11 onto the processing station 11. During work, a workpiece is conveyed to the processing station 11 through the conveying mechanism 21, and then the pressing mechanism 22 moves from top to bottom to press and fix the workpiece on the processing station 11, so that the workpiece is positioned, and the laser head 30 can process the workpiece conveniently. In the process, the jig 13 does not need to be separated from the conveying mechanism 21, the position of the jig 13 relative to the conveying mechanism 21 does not deviate, the position between the jig 13 and the workpiece does not deviate, and the workpiece can be directly machined without secondary positioning. After the workpiece is machined, the jig 13 does not need to be moved to the conveying mechanism 21 again, the situation that the position of the jig 13 deviates from the position of the conveying mechanism 21 due to lifting movement is avoided, the precision of the positions before and after the workpiece is machined is ensured, and the subsequent machining of the workpiece is guaranteed.
Further, the runner assembly 20 is fixed on the frame 10 by a moving mechanism, and the moving mechanism can move the runner assembly 20 on a plane to help move the workpiece to be processed to the processing station 11.
In the technical solution of an embodiment of the present invention, the laser head 30 includes a housing and a laser optical path structure 31 disposed in the housing, and the laser optical path structure 31 includes a structure through which a laser optical path emitted by a laser passes between a laser and a workpiece to be processed. For example, the galvanometer 311 and the field lens 313, where the galvanometer 311 is connected to a motor, and the galvanometer 311 is driven by the motor to swing back and forth within a preset angle range, so as to implement processing on the laser path, and the number of the galvanometers 311 may be multiple, and the laser path structure 31 meets preset processing requirements by providing multiple galvanometers 311; the field lens 313 comprises at least one convex lens, and the field lens 313 is used for focusing the laser light processed by the galvanometer 311, so that the amplitude of the laser changed by the galvanometer 311 can be effectively reduced, and the laser processing range is expanded.
In the technical solution of an embodiment of the present invention, the visual inspection component 35 is used for observing the state of the laser cutting the processed workpiece, and specifically can detect whether the laser processing position is accurate. The visual inspection assembly 35 can detect the originally set detection point, and the detection point detected by the visual inspection assembly 35 should coincide with the processing point of the laser processing under normal conditions, but if the position of one of the galvanometer 311 and the visual inspection assembly 35 is shifted in the laser processing process, the detection will be inaccurate.
In the technical solution of an embodiment of the present invention, the relative positions of the visual detection assembly 35 and the galvanometer 311 are unchanged by providing the beam combining structure 33, so that a detection optical path of the visual detection assembly 35 for detecting a processing point of laser processing coincides with a laser optical path between the beam combining structure 33 and the field lens 313, thereby improving the precision of laser processing.
In an embodiment, as shown in fig. 4 and 5, the laser head 30 further includes a laser, a beam expander, at least one reflection device 315, and the laser head 30, wherein the laser, the beam expander, the reflection device 315, the beam combining structure 33, the galvanometer 311, and the field lens 313 are sequentially arranged along a propagation direction of a laser light path, respectively.
In the technical solution of an embodiment of the present invention, the beam expander is disposed in front of the laser, and is configured to expand a diameter of the laser beam and reduce a divergence angle of the laser beam, so that the expanded laser beam is focused smaller by the field lens 313.
In the technical solution of an embodiment of the present invention, the reflection mechanism, the beam combining structure 33, the galvanometer 311, and the field lens 313 adjacent to the beam combining structure 33 are all disposed on the same lifting assembly 40, and the lifting assembly 40 is disposed above the worktable, so that the synchronous lifting movement of the reflection device 315, the beam combining lens seat 335, the visual detection assembly 35, and the galvanometer 311 closest to the beam combining structure 33 in the vertical direction is realized, on the premise of ensuring the stability of the laser light path, the stroke of the laser cutting apparatus 100 in the vertical direction is increased, and the applicability of the laser cutting apparatus 100 is improved.
Further, the visual detection assembly 35 is connected with the beam combining lens holder 335, and the detection window of the visual detection assembly 35 coincides with the detection light path opening 3351, and the angle between the light-transmitting surface 3111 of the beam combining lens 331 and the central axis of the laser exit 3355 can be adjusted to change the installation position of the visual detector, so that the installation position of the visual detector is more flexible, and the space is optimized and utilized.
Preferably, when an included angle between the central axis of the detection light path passing port 3351 and the central axis of the laser incident port 3353 is a right angle, the laser light path is most regular and is most convenient to adjust.
In one embodiment, the laser cutting apparatus 100 further comprises a power detection assembly including a first power meter and a second power meter, the first power meter is disposed at the light outlet 37 of the laser head 30, and the second power meter is disposed in front of the processing station 11.
In the technical solution of an embodiment of the present invention, whether the laser has attenuation and an attenuation portion may be determined by comparing a difference between the first power meter and the second power meter.
For example, if the laser head 30 emits laser light with a power of 25W, the measurement result of the first power meter should be 25W, and the loss of propagation in the optical path should not exceed 3W, the measurement result of the second power meter should be larger than 22W.
It can be understood that if the measurement result of the first power meter is 25W, and the measurement result of the second power meter is less than 22W, it can be determined that the power loss is caused by the contamination of the optical path; if the measurement result of the first power meter is less than 25W, the power loss caused by the internal reason of the laser transmitter can be judged; this facilitates quick identification of the cause of power loss in the laser cutting apparatus 100, and reduces maintenance costs.
In an embodiment, as shown in fig. 1 and fig. 2, the laser cutting apparatus 100 further includes a lifting assembly 40 and a distance measuring assembly 50, the lifting assembly 40 is disposed on the frame 10, the laser head 30, the beam combining structure 33, and the distance measuring assembly 50 are disposed on the lifting assembly 40, and the lifting assembly 40 drives the distance measuring assembly 50 and the laser head 30 to move up and down relative to the processing station 11 at the same time.
Further, the distance measuring assembly 50 is located at one side of the processing station 11; the distance measuring assembly 50 is provided with a distance measuring port 51, and the distance measuring assembly 50 is used for measuring the distance between the distance measuring port 51 and the processing station 11 in real time.
In the technical solution of an embodiment of the present invention, during focusing, the distance measuring component 50 measures an actual distance between the light outlet 37 of the laser head 30 and the processing station 11, and compares the measured actual distance with a pre-stored focal distance, if the actual distance measured by the distance measuring component 50 is different from the pre-stored focal distance, a signal is transmitted to the control system, the control system controls the lifting component 40 to move to compensate for the height difference, and the laser head 30 can be moved rapidly, so that a focal point of a laser beam moves to the surface of a workpiece to be processed.
In an embodiment, as shown in fig. 4 and 5, the beam combining structure 33 includes a beam combining mirror 331, a beam combining mirror fixing plate 333, and a beam combining mirror holder 335, the beam combining mirror 331 has a light-transmitting surface 3111 and a reflecting surface 3313 disposed opposite to each other, and the reflecting surface 3313 of the beam combining mirror 331 is disposed toward the galvanometer 311; the beam combiner 331 is fixed on the beam combiner fixing plate 333; an installation space is formed inside the beam combining lens holder 335, the beam combining lens fixing plate 333 is disposed in the installation space, the beam combining lens holder 335 is further provided with a detection light path port 3351, and the detection light path is reflected by the reflection surface 3313 and then emitted to the vision inspection assembly 35 through the detected light path port 3351.
In the technical solution of an embodiment of the present invention, a through hole is formed in the beam combining lens fixing plate 333 for accommodating the beam combining lens 331, the installation space inside the beam combining lens base 335 is an installation groove, and a socket is formed on the side wall of the beam combining lens base 335 to facilitate installation and removal of the beam combining lens fixing plate 333.
In the technical solution of an embodiment of the present invention, the beam combining lens seat 335 is provided with a laser incident port 3353 and a laser exit port 3355, the laser is incident into the beam combining lens seat 335 through the laser incident port 3353, and the laser passes through the light-transmitting surface 3111 of the beam combining lens 331 without changing the direction of the laser, and then is emitted through the laser exit port 3355.
In one embodiment, as shown in fig. 3, the transmission mechanism 21 includes a driving motor 211, a driving wheel 213, a plurality of driven wheels 215, and a transmission belt 217, wherein the driving motor 211 is disposed on the frame 10; the driving wheel 213 is connected with a driving shaft of the driving motor 211; a plurality of driven wheels 215 are arranged at intervals along the conveying direction of the conveying mechanism 21; the transmission belts 217 are connected to the driving pulley 213 and the plurality of driven pulleys 215, respectively.
In the technical scheme of the embodiment of the invention, four driven wheels 215 are provided, the driven wheels 215 on two sides are used for driving the conveyor belt 217 to move, and the remaining two driven wheels 215 are used for supporting the conveyor belt 217, so that the phenomenon that the conveyor belt 217 is recessed due to the fact that a workpiece is extruded when the first pressing plate and the second pressing plate are pressed downwards is reduced, and meanwhile, the stability of the conveyor belt 217 in operation is improved.
In one embodiment, as shown in fig. 3, the pressing mechanism 22 includes a pressing driving member and a pressing plate 221, and the pressing driving member is disposed on the frame 10; the pressing plate 221 is connected with the pressing driving element and located above the conveying mechanism 21, and the pressing driving element drives the pressing plate 221 to move towards the conveying mechanism 21 so as to fix the workpiece on the conveying mechanism 21.
In one embodiment, as shown in fig. 3, the flow channel assembly 20 further includes a feeding sensor 23 and a material stop mechanism 24, wherein the feeding sensor 23 is located at the feeding side of the processing station 11; the material blocking mechanism 24 is positioned on the discharge side of the processing station 11, and the material blocking mechanism 24 is used for blocking a workpiece on the processing station 11; the material blocking mechanism 24 comprises a material blocking driving piece 241 and a material blocking block 243, the material blocking driving piece 241 is arranged on the frame 10, the material blocking block 243 is connected with the material blocking driving piece 241, the material blocking driving piece 241 drives the material blocking block 243 to be abutted against a workpiece and stop the workpiece at the machining station 11.
In the technical scheme of an embodiment of the invention, after receiving a feeding signal, the feeding sensor 23 sends the feeding signal to the control system, the control system controls the material blocking driving piece 241 to drive the material blocking block 243 to move to a position where the workpiece can be stopped, the conveying mechanism 21 continues to drive the workpiece to move to the material blocking block 243, the workpiece is stopped by the material blocking block 243 to the processing station 11, the material blocking block 243 abuts against the jig 13, and the stability of the jig 13 and the workpiece mounted on the jig 13 is increased because the shape of the abutting position of the material blocking block 243 and the jig 13 is complementary. The material blocking driving element 241 may be an air cylinder or other driving structure.
Further, the runner assembly 20 further includes an in-position sensor 25, the in-position sensor 25 is disposed on the processing station 11, and the in-position sensor 25 is configured to detect an in-position signal of the workpiece.
In the technical solution of an embodiment of the present invention, when the jig 13 for loading the workpiece abuts against the material blocking block 243, the in-place sensor 25 detects the in-place information of the jig 13, and sends the in-place information to the control system, and the control system controls the conveying mechanism 21 to stop operating, so as to avoid the situation that the workpiece on the jig 13 on the conveying mechanism 21 is damaged and unstable due to the friction of the conveying mechanism 21, further improve the stability of the workpiece during processing, and save energy.
In the technical scheme of an embodiment of the invention, when the in-place sensor 25 senses an in-place signal of the jig 13 loaded with the workpiece, the in-place information is sent to the control system, the control system controls the pressing driving piece to drive the pressing plate 221 to extrude and fix the jig 13 abutted to the material blocking block 243, the workpiece on the jig 13 cannot move before and after processing, the instability of the workpiece before and after processing is avoided, and the processing quality is improved, wherein the pressing driving piece can be a cylinder or other driving structures.
In an embodiment, as shown in fig. 3, the flow channel assembly 20 further includes a width adjustment mechanism 26, the width adjustment mechanism 26 includes a slide rail 261, at least one mounting seat 263, and at least one locking device 265, the slide rail 261 is fixed to the rack 10, and an extending direction of the slide rail 261 forms an included angle with a conveying direction of the conveying mechanism 21; the mounting seat 263 is slidably connected with the slide rail 261; the locking device 265 is connected to the mounting seat 263, and the locking device 265 is configured to limit the mounting seat 263 to slide relative to the sliding rail 261.
In the technical solution of an embodiment of the present invention, the flow channel assembly 20 is provided with two opposite mounting seats 263, and the mounting seats 263 are slidably connected to the slide rail 261, a distance between the mounting seat 263 and another mounting seat 263 is adjusted by adjusting a relative position of the movable mounting seat 263 on the slide rail 261, and a distance between the mounting seat 263 and another mounting seat 263 is adjusted to meet processing requirements of workpieces with different sizes, so that adaptability and flexibility of the flow channel assembly 20 are improved.
In the technical solution of an embodiment of the present invention, the locking device 265 includes an adjusting handle and a pressing block, the adjusting handle is screwed to the mounting seat 263, and the adjusting handle is disposed toward the extending direction perpendicular to the sliding rail 261; the pressing block is arranged at the bottom of the adjusting handle and used for pressing the sliding rail 261 to fix the mounting seat 263. When adjusting the distance between mount pad 263 and another mount pad 263, rotate the adjustment handle, make mount pad 263 to the direction of keeping away from another mount pad 263 remove on slide rail 261, compact heap and slide rail 261 become not hard up state from the extrusion state, after having adjusted mount pad 263, rotate the adjustment handle, make mount pad 263 to the direction that is close to another mount pad 263 remove on slide rail 261, compact heap extrudees slide rail 261 once more and reaches fixed effect, the convenience when having improved the regulation mounting panel.
In an embodiment, as shown in fig. 6, the laser cutting apparatus 100 further includes a dust extraction assembly 60, where the dust extraction assembly 60 is used for extracting dust from the jig 13 of the laser cutting apparatus 100; the dust extraction assembly 60 comprises a first dust extraction structure 61 and a second dust extraction structure 63; the first dust extraction structure 61 is connected with the lower part of the field lens 313, the first dust extraction structure 61 is provided with a first dust extraction port 611 and a first dust outlet 613 which are communicated, and the first dust extraction port 611 is arranged towards the jig 13; the second dust extraction component 60 is disposed on the frame 10 and located below the jig 13, the second dust extraction structure 63 is provided with a second dust extraction port 631 and a second dust outlet 633 which are communicated with each other, and the second dust extraction port 631 faces the jig 13.
In the technical solution of an embodiment of the present invention, when processing a workpiece, a laser beam having high energy is emitted from the light exit 37 of the laser head 30 and irradiated on the surface of the workpiece to melt a part of the material of the surface of the workpiece, thereby processing the workpiece. However, a large amount of soot is generated during the machining process, and in order to rapidly diffuse the soot around the workpiece, the soot is sucked around the workpiece by the dust suction assembly 60, wherein the first dust hood 65 located above the workpiece and the second dust hood 65 located below the workpiece suck the soot around the workpiece into the first dust suction structure 61 and the second dust suction structure 63 through the first dust suction port 611 and the second dust suction port 631 respectively, so that the cleanliness of the environment around the workpiece is ensured. Compared with the scheme that only one dust collection cover 65 is arranged in the existing scheme, the scheme that the dust collection covers 65 are respectively arranged above and below the jig 13 in the laser cutting equipment 100 in the scheme of the invention can adsorb smoke generated in the process of cutting the workpiece in an all-around manner, and has a better dust extraction effect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A laser cutting apparatus, comprising:
the device comprises a rack, wherein a machining station is arranged on the rack, and a jig for fixing a workpiece is arranged on the machining station;
the runner assembly comprises a conveying mechanism and a pressing mechanism, the runner assembly is arranged on the rack, the conveying mechanism is used for conveying the workpiece to a machining station, and the pressing mechanism can move downwards relative to the conveying mechanism so as to position the workpiece at the machining station;
the laser head is arranged on the rack and is positioned above the runner assembly, and the laser head comprises a galvanometer and a field lens which are sequentially arranged along the laser propagation direction;
the beam combining structure is arranged on the light incidence side of the galvanometer; and
the visual detection assembly is arranged on one side of the beam combining structure, and a detection light path of the visual detection assembly is overlapped with a laser light path between the beam combining structure and the field lens.
2. The laser cutting apparatus of claim 1, wherein the laser head further includes a laser, a beam expander, and at least one reflection device, and the laser, the beam expander, the reflection device, the beam combining structure, the galvanometer, and the field lens are respectively disposed in sequence along a propagation direction of a laser light path.
3. The laser cutting apparatus of claim 1 further comprising a power detection assembly, the power detection assembly including a first power meter and a second power meter, the first power meter being located at an exit port of the laser head, the second power meter being located in front of the processing station.
4. The laser cutting apparatus of claim 1, further comprising a lifting assembly and a distance measuring assembly, wherein the lifting assembly is disposed on the frame, the laser head, the beam combining structure and the distance measuring assembly are disposed on the lifting assembly, and the lifting assembly drives the distance measuring assembly and the laser head to move up and down relative to the processing station.
5. The laser cutting apparatus of claim 1, wherein the beam combining structure comprises:
the beam combiner is provided with a light transmitting surface and a reflecting surface which are arranged oppositely, and the reflecting surface of the beam combiner faces the galvanometer;
the beam combining mirror fixing plate is fixed on the beam combining mirror fixing plate; and
the beam combining lens seat is internally provided with an installation space, the beam combining lens fixing plate is arranged in the installation space, the beam combining lens seat is also provided with a detection light path opening, and the detection light path is reflected by the reflecting surface and then emitted to the visual detection assembly through the detection light path opening.
6. The laser cutting apparatus of any one of claims 1 to 5, wherein the transport mechanism comprises:
the driving motor is arranged on the rack;
the driving wheel is in transmission connection with a driving shaft of the driving motor;
the driven wheels are arranged at intervals along the conveying direction of the conveying mechanism; and
and the conveying belt is respectively connected with the driving wheel and the driven wheels.
7. The laser cutting apparatus according to any one of claims 1 to 5, wherein the swaging mechanism includes:
the pressing driving piece is arranged on the rack; and
the material pressing driving piece drives the material pressing plate to move towards the conveying mechanism so as to fix the workpiece on the conveying mechanism.
8. The laser cutting apparatus of any of claims 1 to 5, wherein the flow channel assembly further comprises:
a feed inductor located on a feed side of the processing station; and
the material blocking mechanism is positioned on the discharge side of the machining station and is used for blocking a workpiece to the machining station;
the material blocking mechanism comprises a material blocking driving piece and a material blocking block, the material blocking driving piece is arranged on the rack, the material blocking block is connected with the material blocking driving piece, the material blocking driving piece drives the material blocking block to be abutted against a workpiece, and the workpiece is blocked on the machining station.
9. The laser cutting apparatus of any of claims 1 to 5, wherein the runner assembly further comprises a width adjustment mechanism, the width adjustment mechanism comprising:
the sliding rail is fixed on the rack, and an included angle is formed between the extending direction of the sliding rail and the conveying direction of the conveying mechanism;
the mounting seat is connected with the sliding rail in a sliding manner;
and the locking device is connected with the mounting seat and is used for limiting the mounting seat to slide relative to the sliding rail.
10. The laser cutting apparatus of any one of claims 1 to 5, further comprising a dust extraction assembly, the dust extraction assembly comprising a first dust extraction structure and a second dust extraction structure;
the first dust extraction structure is connected to the field lens and located below the field lens, the first dust extraction structure is provided with a first dust extraction port and a first dust outlet which are communicated, and the first dust extraction port faces the jig;
the second dust extraction structure is provided with a second dust extraction port and a second dust outlet which are communicated, and the second dust extraction port faces the jig.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210597359.6A CN114985964A (en) | 2022-05-27 | 2022-05-27 | Laser cutting equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210597359.6A CN114985964A (en) | 2022-05-27 | 2022-05-27 | Laser cutting equipment |
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| CN114985964A true CN114985964A (en) | 2022-09-02 |
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