CN215747158U - Laser cutting device for groove cutting - Google Patents

Abstract

The utility model relates to the technical field of laser cutting, and provides a laser cutting device for groove cutting, which comprises: the device comprises a collimation mechanism, a light path steering mechanism, a swing mechanism and a laser cutting head; the light path steering mechanism comprises a first steering piece, a second steering piece and a connecting piece, the first steering piece is arranged on the collimating mechanism, the second steering piece is arranged at the laser input end of the laser cutting head, one end of the connecting piece is connected with the first steering piece, and the other end of the connecting piece is connected to the second steering piece after sequentially penetrating through the first through hole and the second through hole; the first steering piece is aligned with the laser emitted by the straight mechanism and is used for steering for the first time, then the laser is emitted to the second steering piece along the second direction, and the second steering piece is used for steering the received laser for the second time and then the laser enters the laser cutting head along the first direction and is emitted. The laser cutting device for groove cutting provided by the utility model can realize the laser cutting of the groove under the condition that the laser cutting head is fixed.

Description

Laser cutting device for groove cutting

Technical Field

The utility model belongs to the technical field of laser cutting, and particularly relates to a laser cutting device for groove cutting.

Background

The laser cutting is to focus a laser beam on the surface of a material by using a focusing lens to melt the material, blow away the melted material by using compressed gas coaxial with the laser beam, and make the laser beam and the material move relatively along a certain track so as to form a cutting seam with a certain shape, wherein a groove cutting head device of the laser cutting machine is used as an indispensable important component of the laser cutting machine, and the quality of the design and the manufacture of the groove cutting head device is very important for ensuring that good processing quality is obtained.

The existing plane cutting head can not realize groove cutting under the fixed and unchangeable condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a laser cutting device for groove cutting, which solves the technical problem that the groove cutting cannot be realized under the condition that a plane cutting head is fixed in the existing laser cutting head.

In order to achieve the purpose, the utility model adopts the technical scheme that: there is provided a laser cutting device for groove cutting, comprising: the device comprises a collimation mechanism, a light path steering mechanism, a swing mechanism and a laser cutting head; the collimating mechanism collimates the received laser and then enables the laser to be emitted along a first direction, and a first through hole is formed in the collimating mechanism; the swing mechanism is rotatably arranged on the collimation mechanism by taking a second direction perpendicular to the first direction as an axis, and a second through hole with an axis parallel to the second direction is formed in the swing mechanism; the laser cutting head comprises a laser input end and a laser output end, the laser input end is arranged on the swing mechanism, and the axis of the laser cutting head is parallel to the first direction; the light path steering mechanism comprises a first steering piece, a second steering piece and a connecting piece, the first steering piece is arranged on the collimation mechanism, and the second steering piece is arranged at the laser input end of the laser cutting head; one end of the connecting piece is connected with the first steering piece, and the other end of the connecting piece penetrates through the first through hole and the second through hole in sequence and then is connected with the second steering piece; the first steering piece steers the laser emitted by the collimation mechanism for the first time and then emits the laser to the second steering piece along the second direction, and the second steering piece steers the received laser for the second time and then enables the received laser to enter the laser input end of the laser cutting head along the first direction and emit the laser from the laser output end of the laser cutting head.

Furthermore, the laser cutting device also comprises an optical fiber locking mechanism arranged on the collimating mechanism and used for installing the optical fiber.

Furthermore, the collimating mechanism comprises an installation part and a collimating part, the installation part comprises a collimating cavity and an installation seat, the optical fiber locking mechanism and the installation seat are respectively arranged at two opposite ends of the collimating cavity, and a third through hole penetrating through the collimating cavity is formed in the side wall of the collimating cavity; the collimating piece is arranged on the side wall of the collimating cavity body, and the collimating piece penetrates through the third through hole to collimate the laser.

Further, the mounting seat comprises a mounting rod and a mounting plate, the mounting plate is arranged on the collimation cavity, and the mounting plate is provided with the first through hole; the two ends of the mounting rod are respectively connected with the mounting plate and the collimation cavity, the mounting rod and the bottom surface of the collimation cavity are arranged at an angle of 45 degrees, the first steering piece is arranged on the mounting rod, and the connecting piece penetrates through the first through hole and the second through hole and then is connected with the second steering piece; the first steering member and the second steering member are arranged in parallel.

Furthermore, the collimating element comprises a motor base, a first motor, a transmission part and a collimating mirror, the motor base is arranged on the side wall of the collimating cavity, a slot close to the third through hole is arranged on the motor base, and the slot extends along the first direction; the first motor and the transmission piece are arranged on the motor base, and the collimating mirror penetrates through the open slot and the third through hole and then is positioned in the collimating cavity; the first motor is connected with the transmission piece and drives the transmission piece to move, and the transmission piece is connected with the collimating mirror and drives the collimating mirror to move along the slot.

Furthermore, the laser cutting head comprises a first connecting seat, a second connecting seat and a cutting head body, wherein the top surface of the first connecting seat is parallel to the first steering piece, and the second steering piece is arranged on the top surface of the first connecting seat; the bottom surface of the first connecting seat is connected with the cutting head body, and a fourth through hole penetrating through the top surface and the bottom surface of the first connecting seat is formed in the first connecting seat; the second connecting seat is arranged on the side wall of the first connecting seat and connected with the swing mechanism, a fifth through hole corresponding to the second through hole is formed in the second connecting seat, a sixth through hole corresponding to the fifth through hole is formed in the first connecting seat, and the sixth through hole is communicated with the fourth through hole.

Further, the cutting head body comprises a focusing mirror assembly, a transition piece and a copper nozzle which are connected in sequence, and the focusing mirror assembly focuses the received laser and then sequentially ejects the laser through the transition piece and the copper nozzle.

Furthermore, be equipped with ceramic ring between the copper mouth with the transition piece, the laser cutting head still includes the increaser for detect the distance of copper mouth and work piece, the increaser set up in on the first connecting seat.

Further, the cutting head body still including set up in the tuner of transition piece, the tuner with the increaser electricity is connected.

Furthermore, the swing mechanism comprises a second motor, a first limit block and a second limit block, the second motor is used for driving the laser cutting head to swing around the second direction, and the first limit block and the second limit block respectively limit the forward and backward rotation angles of the second motor.

Compared with the prior art, the laser cutting device for groove cutting provided by the utility model has the advantages that after laser is collimated by the collimating mechanism, the laser is emitted to the first steering piece along the first direction, is sequentially emitted to the second steering piece after being steered for the first time by the first steering piece through the first through hole and the second through hole, is emitted to the laser input end of the laser cutting head along the first direction after being steered for the second time by the second steering piece, and is emitted to the laser output end of the laser cutting head along the first direction to perform laser cutting on a workpiece; the laser input end of the laser cutting head is arranged on the swing mechanism, so that the laser cutting head swings around the second direction under the driving of the swing mechanism, and the laser cutting of the groove can be realized under the condition that the laser cutting head is fixed and unchanged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a laser cutting apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an optical path steering mechanism provided in an embodiment of the present invention;

FIG. 3 is a first schematic structural diagram of a collimating element according to an embodiment of the present invention;

fig. 4 is a second structural schematic diagram of the collimating element according to the embodiment of the present invention;

fig. 5 is a first schematic structural diagram of an optical path steering mechanism according to an embodiment of the present invention;

fig. 6 is a second schematic structural diagram of an optical path steering mechanism according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a swing mechanism according to an embodiment of the present invention;

FIG. 8 is a first schematic view of a laser cutting head according to an embodiment of the present invention;

FIG. 9 is a second schematic structural view of a laser cutting head according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an optical fiber locking mechanism according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a collimating mechanism; 11-a first via; 12-a mounting member; 121-a collimating cavity; 1211 — a third via hole; 122-a mount; 1221-mounting a rod; 1222-a mounting plate; 13-a collimating element; 131-a motor base; 1311-slotting; 132-a first motor; 133-a transmission member; 1331-ball screw; 1332-linear guide; 1333-bearings; 134-a collimating mirror; 1341-a collimator lens mount; 1342-collimating optic; 135-a coupling; 2-an optical path steering mechanism; 21-a first steering member; 211-mirror mount; 212-a sealing cover; 213-mirror box; 214-a mirror plate; 22-a second steering member; 23-a connector; 3-a swing mechanism; 31-a second via; 32-a second motor; 33-a first stopper; 34-a second stopper; 35-a sensor; 4-laser cutting head; 41-laser input end; 42-laser output end; 43-a first connection seat; 432-sixth via; 44-a second connection seat; 441-fifth through hole; 45-a cutting head body; 451-focusing mirror assembly; 452-a transition piece; 453-copper nozzle; 454-a tuner; 455-focusing mirror adjustment; 456-a protective element; 46-a height adjuster; 5-an optical fiber locking mechanism; 51-an optical path channel; 52-an anti-reflection cylinder; 53-protective lenses; d1-first direction; d2-second direction; 8-ceramic ring.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1, 2 and 7, a laser cutting apparatus for groove cutting according to the present invention will now be described, including: the device comprises a collimation mechanism 1, a light path steering mechanism 2, a swing mechanism 3 and a laser cutting head 4; the collimating mechanism 1 collimates the received laser and then enables the laser to be emitted along a first direction D1, and a first through hole 11 is formed in the collimating mechanism 1; the swing mechanism 3 is arranged on the collimating mechanism 1, the swing mechanism 3 is rotatably arranged on the collimating mechanism 1 by taking a second direction D2 perpendicular to the first direction D1 as an axis, and the swing mechanism 3 is provided with a second through hole 31 of which the axis is parallel to the second direction D2; the laser cutting head 4 comprises a laser input end 41 and a laser output end 42, the laser input end 41 is arranged on the swing mechanism 3, and the axis of the laser cutting head 4 is parallel to the first direction D1; the light path steering mechanism 2 comprises a first steering piece 21, a second steering piece 22 and a connecting piece 23, the first steering piece 21 is arranged on the collimation mechanism 1, the second steering piece 22 is arranged at the laser input end 41 of the laser cutting head 4, one end of the connecting piece 23 is connected with the first steering piece 21, and the other end of the connecting piece 23 sequentially penetrates through the first through hole 11 and the second through hole 31 and then is connected with the second steering piece 22; the first steering member 21 steers the laser emitted from the straightening mechanism 1 for the first time and then emits the laser to the second steering member 22 along the second direction D2, and the second steering member 22 steers the received laser for the second time and then enters the laser input end 41 of the laser cutting head 4 along the first direction D1 and emits the laser from the laser output end 42 of the laser cutting head 4.

During concrete implementation, water channel can be set up on collimation mechanism 1, light path steering mechanism 2, swing mechanism 3 and the laser cutting head 4, can realize aiming at the temperature control of collimation mechanism 1, light path steering mechanism 2, swing mechanism 3 and laser cutting head 4 through water channel, make laser cutting device keep the constant temperature state at the operation in-process, avoid the temperature variation to influence the effect of laser cutting, can also avoid the high temperature to cause the harm to each part in the laser cutting device simultaneously. Since the laser cutting device needs to use auxiliary gas when in use, for example, nitrogen is needed to prevent the oxidation reaction of the cut when processing stainless steel, and oxygen is needed to play a role in supporting combustion and accelerating the processing speed of the workpiece when processing carbon steel plate, of course, the auxiliary gas needed to be used when the laser cutting device is in use is not limited to the above listed types, and can be specifically selected according to the requirements of the actually processed workpiece. Can set up the gas circuit passageway on laser cutting head 4, can provide the auxiliary gas of needs for the laser cutting process through the gas circuit passageway, guarantee fine cutting effect.

The first direction D1 is a direction in which the laser cutting apparatus emits laser light, that is, a direction in which a workpiece is processed. When the laser cutting machine is used, laser irradiates to the collimating mechanism 1, after the collimating mechanism 1 collimates the laser, the laser is irradiated from the collimating mechanism 1 to the first steering member 21 along the first direction D1, after the laser is steered for the first time under the action of the first steering member 21, the laser is sequentially irradiated from the first through hole 11 and the second through hole 31 to the second steering member 22 along the second direction D2, after the laser is steered for the second time under the action of the second steering member 22, the laser enters the laser input end 41 of the laser cutting head 4 along the first direction D1, and then the laser is irradiated from the laser output end 42 of the laser cutting head 4 to cut a workpiece. When the work piece is the groove, swing mechanism 3 uses second direction D2 to rotate as the axle, drives laser cutting head 4 and encircles second direction D2 and rotate to can realize carrying out laser cutting to the groove.

Compared with the prior art, the laser cutting device for groove cutting provided by the utility model has the advantages that after laser is collimated by the collimating mechanism 1, the laser is emitted to the first steering piece 21 along the first direction D1, is sequentially emitted to the second steering piece 22 after being steered for the first time by the first steering piece 21 through the first through hole 11 and the second through hole 31, is emitted to the laser input end 41 of the laser cutting head 4 along the first direction D1 after being steered for the second time by the second steering piece 22, and is emitted to a workpiece to be subjected to laser cutting along the first direction D1 from the laser output end 42 of the laser cutting head 4; laser input end 41 through with laser cutting head 4 sets up on swing mechanism 3 for laser cutting head 4 encircles the swing of second direction D2 under swing mechanism 3's drive, thereby can realize the laser cutting to the groove under the fixed unchangeable condition of laser cutting head 4.

In one embodiment, referring to fig. 10 in combination, the laser cutting apparatus further includes a fiber locking mechanism 5 disposed on the alignment mechanism 1 for installing the optical fiber. A waterway channel can be arranged on the optical fiber locking mechanism 5, the temperature control of the optical fiber locking mechanism 5 can be realized through the waterway channel, the laser cutting device is kept in a constant temperature state in the operation process, the effect of laser cutting influenced by temperature change is avoided, and meanwhile, the damage to the optical fiber locking mechanism 5 caused by overhigh temperature can also be avoided. During specific implementation, locate the entry end of collimation mechanism 1 with 5 laser of optic fibre locking mechanism, optic fibre locking mechanism 5 includes: the optical fiber collimator comprises an optical path channel 51, an anti-reflection barrel 52 and a protective lens 53, wherein the anti-reflection lens is arranged in the optical path channel 51, the protective lens 53 isolates the collimating mechanism 1 from the optical fiber locking mechanism 5, and protects the lens of the collimating mechanism 1 from being damaged and polluted. The optical fiber is installed and fixed through the optical fiber locking mechanism 5, so that the optical fiber is tightly connected with the laser cutting device.

In an embodiment, referring to fig. 2 in combination, the collimating mechanism 1 includes a mounting member 12 and a collimating member 13, the mounting member 12 includes a collimating cavity 121 and a mounting seat 122, the optical fiber locking mechanism 5 and the mounting seat 122 are respectively disposed at two opposite ends of the collimating cavity 121, and a third through hole 1211 penetrating through the collimating cavity 121 is formed on a side wall of the collimating cavity 121; the collimating element 13 is disposed on a sidewall of the collimating cavity 121, and the collimating element 13 collimates the laser through the third through hole 1211. Because the collimating element 13 is disposed on the side wall of the collimating cavity 121, and the collimating element 13 passes through the third through hole 1211 formed on the side wall of the collimating cavity 121 to collimate the laser, the optical fiber locking mechanism 5 and the mounting seat 122 are respectively disposed at two opposite ends of the collimating cavity 121, and the laser emitted from the optical fiber mounted on the optical fiber locking mechanism 5 enters the collimating cavity 121 and then is emitted after being collimated by the collimating element 13.

In one embodiment, referring to fig. 2 in combination, the mounting base 122 includes a mounting rod 1221 and a mounting plate 1222, the mounting plate 1222 is disposed on the alignment cavity 121, and the mounting plate 1222 is opened with a first through hole 11; the two ends of the mounting rod 1221 are respectively connected with the mounting plate 1222 and the alignment cavity 121, the mounting rod 1221 and the bottom surface of the alignment cavity 121 are arranged at an angle of 45 degrees, the first steering member 21 is arranged on the mounting rod 1221, and the connecting member 23 penetrates through the first through hole 11 and the second through hole 31 and then is connected with the second steering member 22; the first diverting member 21 and the second diverting member 22 are arranged in parallel. In specific implementation, referring to fig. 5 and fig. 6 in combination, each of the first steering component 21 and the second steering component 22 may include a mirror base 211, and a sealing cover 212, a mirror box 213, and a mirror 214 disposed on the mirror base 211, wherein the mirror 214 is disposed on the mirror box 213, and the mirror box 213 and the sealing cover 212 are disposed on the mirror base 211; the mirror plate 214 of the first diverting member 21 and the mirror plate 214 of the second diverting member 22 are oppositely disposed. Because the bottom surfaces of the mounting rod 1221 and the collimation cavity 121 are arranged at 45 degrees, the first steering member 21 is arranged on the mounting rod 1221 and is also arranged at 45 degrees, when laser is emitted from the collimation cavity 121 to the first steering member 21, after the reflection action of the first steering member 21 arranged at 45 degrees, the laser is emitted from the first steering member 21 to the second steering member 22 along the second direction D2, because the first steering member 21 is parallel to the second steering member 22, after the laser is emitted into the second steering member 22, under the reflection action of the second steering member 22, the laser is emitted from the second steering member 22 to the laser cutting head 4 along the first direction D1, so that the laser cutting head 4 can perform laser cutting along the first direction D1.

In an embodiment, referring to fig. 3 and 4 in combination, the collimating element 13 includes a motor base 131, a first motor 132, a transmission element 133 and a collimating mirror 134, the motor base 131 is disposed on a side wall of the collimating cavity 121, a slot 1311 is disposed on the motor base 131 and is close to the third through hole 1211, and the slot 1311 extends along the first direction D1; the first motor 132 and the transmission piece 133 are arranged on the motor base 131, and the collimating mirror 134 passes through the slot 1311 and the third through hole 1211 and then is positioned in the collimating cavity 121; the first motor 132 is connected to the transmission member 133 and drives the transmission member 133 to move, and the transmission member 133 is connected to the collimating mirror 134 and drives the collimating mirror 134 to move along the slot 1311. In a specific implementation, the first motor 132 may be a servo motor, the transmission 133 includes a ball screw 1331, a linear guide 1332 and a bearing 1333, the linear guide 1332 extends along the first direction D1, the first motor 132 is connected to the ball screw 1331 through the coupling 135, the bearing 1333 is used to support the ball screw 1331, the collimator lens 134 includes a collimator lens seat 1341 and a collimator lens 1342 disposed on the collimator lens seat 1341, and the collimator lens seat 1341 is disposed on the linear guide 1332 and connected to the ball screw 1331; the first motor 132 drives the ball screw 1331 to move, so as to drive the collimating mirror 134 to move on the linear guide 1332; because the collimating mirror 134 passes through the slot 1311 and the third through hole 1211 and then is located in the collimating cavity 121, and the linear guide 1332 extends along the first direction D1, the collimating mirror 134 can move along the first direction D1 in the slot 1311 when moving on the linear guide 1332, so that collimation adjustment can be performed according to the specific situation of the laser light in the first direction D1 in the collimating cavity 121, and the collimation effect of the laser light is ensured.

In an embodiment, referring to fig. 8 and 9 in combination, the laser cutting head 4 includes a first connecting seat 43, a second connecting seat 44 and a cutting head body 45, wherein a top surface of the first connecting seat 43 is parallel to the first turning member 21, and the second turning member 22 is disposed on the top surface of the first connecting seat 43; the bottom surface of the first connecting seat 43 is connected with the cutting head body 45, and a fourth through hole (not shown) penetrating through the top surface and the bottom surface of the first connecting seat 43 is formed in the first connecting seat 43; the second connecting seat 44 is disposed on a side wall of the first connecting seat 43 and connected to the swing mechanism 3, the second connecting seat 44 is provided with a fifth through hole 441 corresponding to the second through hole 31, the first connecting seat 43 is provided with a sixth through hole 432 corresponding to the fifth through hole 441, and the sixth through hole 432 is communicated with the fourth through hole. Since the top surface of the first connecting seat 43 is parallel to the first steering member 21, and the second steering member 22 is disposed on the top surface of the first connecting seat 43, the second steering member 22 and the first steering member 21 can be parallel and arranged at 45 degrees. The second connecting seat 44 and the swing mechanism 3 can be connected by a fastener, the second connecting seat 44 is arranged on the side wall of the first connecting seat 43, and when the laser is emitted from the first steering member 21, the laser sequentially passes through the first through hole 11 on the mounting plate 1222 and the second through hole 31 on the swing mechanism 3 and then is emitted to the fifth through hole 441 on the second connecting seat 44; because the second turning member 22 is disposed on the top surface of the first connecting seat 43, and the fourth through hole penetrates through the top surface and the bottom surface of the first connecting seat 43, the laser enters the fifth through hole 441 of the second connecting seat 44, then is emitted to the second turning member 22 through the sixth through hole 432, and is emitted to the laser cutting head 4 body from the fourth through hole along the first direction D1 after being turned by the second turning member 22, and finally is emitted from the cutting head body 45 to perform laser cutting on the workpiece.

In an embodiment, referring to fig. 8 and 9, the cutting head body 45 includes a focusing mirror assembly 451, a transition piece 452, and a copper nozzle 453 connected in sequence, and the focusing mirror assembly 451 focuses the received laser light and then emits the laser light through the transition piece 452 and the copper nozzle 453 in sequence. The received laser light may be focused by the focusing mirror assembly 451, and the transition piece 452 may be configured to transition the focal length generated by the focusing mirror assembly 451, and the laser light may be emitted from the copper nozzle 453 to process the workpiece after passing through the focusing mirror assembly 451 and the transition piece 452 in sequence. Preferably, a focusing lens adjusting piece 455 and a protecting piece 456 can also be arranged on the cutting head body 45; the focusing lens adjusting part 455 can be used to adjust the position of the focusing lens assembly 451, so as to ensure that the focusing lens is placed at the central point of the light path, thereby achieving the best effect of concentrating light and energy; the protector 456 may be used to protect the focusing lens from damage and contamination.

In one embodiment, referring to fig. 8 and 9, a ceramic ring 8 is disposed between the copper nozzle 453 and the transition piece 452, the laser cutting head 4 further includes an increaser 46 for detecting a distance between the copper nozzle 453 and the workpiece, and the increaser 46 is disposed on the first connecting base 43. The ceramic ring 8 is arranged between the copper nozzle 453 and the transition piece 452, the copper nozzle 453 and the transition piece 452 can be insulated by using ceramic as an insulator, and the height of the copper nozzle 453 and a workpiece can be well sensed by the capacitance of the heightening device 46, so that collision can be avoided. Preferably, the copper nozzle 453 can be formed by processing a red copper material, and by using the characteristics of high temperature resistance, good conductivity and the like of copper, the copper nozzle can bear certain heat and cannot deform during cutting, and the copper nozzle can keep a good capacitance induction height due to good conductivity and cannot impact a cutting head.

In one embodiment, referring to fig. 8 and 9 in combination, cutting head body 45 further includes a tuner 454 disposed on transition piece 452, tuner 454 being electrically connected to riser 46. In particular, the height adjuster 46 and the tuner 454 are connected together by a high voltage cable, and the tuner 454 can be connected to the control unit, so that the height of the copper nozzle 453 to the workpiece can be monitored by the control unit.

In an embodiment, referring to fig. 7 in combination, the swing mechanism 3 includes a second motor 32, a first stopper 33, and a second stopper 34, the second motor 32 is used for driving the laser cutting head 4 to swing around the second direction D2, and the first stopper 33 and the second stopper 34 respectively limit the angle of forward and backward rotation of the second motor 32. The second motor 32 can be a torque motor, and the second motor 32 can drive the laser cutting head 4 to swing around the second direction D2, so as to cut the groove, and the angle of forward and backward rotation of the second motor 32 can be limited by the first limit block 33 and the second limit block 34, so that the motor rotates forward and backward within a certain angle. Preferably, the swing mechanism 3 may further include an inductor 35 for controlling the rotation range and the forward and reverse rotation of the second motor 32.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A laser cutting device for groove cutting, characterized by, includes: the device comprises a collimation mechanism, a light path steering mechanism, a swing mechanism and a laser cutting head;

the collimating mechanism collimates the received laser and then enables the laser to be emitted along a first direction, and a first through hole is formed in the collimating mechanism;

the swing mechanism is rotatably arranged on the collimation mechanism by taking a second direction perpendicular to the first direction as an axis, and a second through hole with an axis parallel to the second direction is formed in the swing mechanism;

the laser cutting head comprises a laser input end and a laser output end, the laser input end is arranged on the swing mechanism, and the axis of the laser cutting head is parallel to the first direction;

the light path steering mechanism comprises a first steering piece, a second steering piece and a connecting piece, the first steering piece is arranged on the collimation mechanism, and the second steering piece is arranged at the laser input end of the laser cutting head; one end of the connecting piece is connected with the first steering piece, and the other end of the connecting piece penetrates through the first through hole and the second through hole in sequence and then is connected with the second steering piece;

the first steering piece steers the laser emitted by the collimation mechanism for the first time and then emits the laser to the second steering piece along the second direction, and the second steering piece steers the received laser for the second time and then enables the received laser to enter the laser input end of the laser cutting head along the first direction and emit the laser from the laser output end of the laser cutting head.

2. The laser cutting device for groove cutting of claim 1, further comprising a fiber locking mechanism disposed on the alignment mechanism for mounting the optical fiber.

3. The laser cutting device for groove cutting according to claim 2, wherein the alignment mechanism comprises an installation member and an alignment member, the installation member comprises an alignment cavity and an installation seat, the optical fiber locking mechanism and the installation seat are respectively disposed at two opposite ends of the alignment cavity, and a third through hole penetrating through the alignment cavity is formed in a side wall of the alignment cavity; the collimating piece is arranged on the side wall of the collimating cavity body, and the collimating piece penetrates through the third through hole to collimate the laser.

4. The laser cutting device for groove cutting according to claim 3, wherein the mounting seat comprises a mounting rod and a mounting plate, the mounting plate is disposed on the collimating cavity, and the mounting plate is provided with the first through hole; the two ends of the mounting rod are respectively connected with the mounting plate and the collimation cavity, the mounting rod and the bottom surface of the collimation cavity are arranged at an angle of 45 degrees, the first steering piece is arranged on the mounting rod, and the connecting piece penetrates through the first through hole and the second through hole and then is connected with the second steering piece; the first steering member and the second steering member are arranged in parallel.

5. The laser cutting device for groove cutting according to claim 3, wherein the collimating member comprises a motor base, a first motor, a transmission member and a collimating mirror, the motor base is disposed on a side wall of the collimating cavity, the motor base is provided with a slot adjacent to the third through hole, and the slot extends along the first direction; the first motor and the transmission piece are arranged on the motor base, and the collimating mirror penetrates through the open slot and the third through hole and then is positioned in the collimating cavity; the first motor is connected with the transmission piece and drives the transmission piece to move, and the transmission piece is connected with the collimating mirror and drives the collimating mirror to move along the slot.

6. The laser cutting device for groove cutting according to claim 1, wherein the laser cutting head comprises a first connecting seat, a second connecting seat and a cutting head body, a top surface of the first connecting seat is parallel to the first steering member, and the second steering member is provided on the top surface of the first connecting seat; the bottom surface of the first connecting seat is connected with the cutting head body, and a fourth through hole penetrating through the top surface and the bottom surface of the first connecting seat is formed in the first connecting seat; the second connecting seat is arranged on the side wall of the first connecting seat and connected with the swing mechanism, a fifth through hole corresponding to the second through hole is formed in the second connecting seat, a sixth through hole corresponding to the fifth through hole is formed in the first connecting seat, and the sixth through hole is communicated with the fourth through hole.

7. The laser cutting device for groove cutting according to claim 6, wherein the cutting head body comprises a focusing mirror assembly, a transition piece and a copper nozzle which are connected in sequence, and the focusing mirror assembly focuses the received laser and then sequentially emits the laser through the transition piece and the copper nozzle.

8. The laser cutting device for groove cutting according to claim 7, wherein a ceramic ring is provided between the copper nozzle and the transition piece, the laser cutting head further comprises an increaser for detecting a distance between the copper nozzle and a workpiece, and the increaser is provided on the first connecting base.

9. The laser cutting device for groove cutting of claim 8, wherein the cutting head body further comprises a tuner disposed at the transition piece, the tuner being electrically connected to the riser.

10. The laser cutting device for groove cutting according to any one of claims 1 to 9, wherein the swing mechanism comprises a second motor, a first stopper and a second stopper, the second motor is configured to drive the laser cutting head to swing around the second direction, and the first stopper and the second stopper respectively limit the angle of forward and backward rotation of the second motor.

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