CN111112234A - Facula rotation type laser beam machining head - Google Patents

Abstract

The invention relates to a light spot rotary type laser processing head which comprises a shell, wherein a laser conveying device, a deviation rectifying device, a laser rotating device and a main laser swinging device are sequentially arranged in the shell, the laser rotating device comprises a hollow motor, a first wedge-shaped mirror, a second wedge-shaped mirror and a focusing mirror are arranged in the hollow motor, the main laser swinging device comprises a swinging shell cover, a main reflecting mirror and a main vibrating mirror are arranged in the swinging shell cover, a main swinging driver for driving the main vibrating mirror to swing is connected to the outer side of the swinging shell cover, and a clamping assembly for improving the stability of the main swinging driver is arranged on the swinging shell cover. The laser rotating device enables the laser beam to form a circular motion track, the main laser swinging device enables the laser beam to form a linear motion track on the basis of the circular motion track, the laser beam forms a line segment with a wider width on the surface of a workpiece, when an operator uses the laser processing head, the area of a laser spot is large, and dirt on the workpiece is not easy to be omitted. The invention has the effect of high workpiece cleaning quality.

Description

Facula rotation type laser beam machining head

Technical Field

The invention relates to the technical field of laser processing, in particular to a light spot rotary type laser processing head.

Background

The laser is praised as one of four inventions in the twentieth century, and has advantages which cannot be achieved by the traditional method in the aspect of workpiece cleaning. In the conventional method, workpiece cleaning is generally performed by using chemical agents and mechanical methods, but the use of chemical agents easily pollutes the environment, and the mechanical methods are difficult to treat corners of the workpiece. Therefore, the laser cleaning technology gradually rises, is environment-friendly and efficient, realizes no grinding and no contact, and is considered to be the most reliable and effective cleaning method at present.

The invention discloses a laser cleaning system for cleaning the inner wall of a pipeline, which comprises a laser cleaning machine, wherein an energy transfer optical fiber is connected to the laser cleaning machine, the other end of the energy transfer optical fiber is connected with a laser cleaning head, the lower end of the laser cleaning head is connected with a moving platform for driving the laser cleaning head to move, the front end of the laser cleaning head is connected with a hollow motor, the motor is connected with a lens cone connecting cylinder rotating along with the motor, one end of the lens cone connecting cylinder is connected with a harmonic lens cone with an adjustable angle, a reflecting mirror is arranged between the lens cone connecting cylinder and the harmonic lens cone, and the light outlet end of the harmonic lens cone is connected with a focusing mirror. The laser cleaning machine transmits a laser light path to the energy transmission optical fiber, the laser light path sequentially passes through the hollow motor, the lens barrel connecting cylinder, the reflecting mirror, the harmonic lens barrel and the focusing mirror, and the angle of the harmonic lens barrel is adjustable, so that the laser cleaning system can complete cleaning work at a larger angle.

The above prior art solutions have the following drawbacks: the radius of the laser light path is small, and is usually only between dozens of micrometers and hundreds of micrometers, but the area of rust, oxide or oil stains on the workpiece is usually large, and when the workpiece is cleaned by using laser, the condition of insufficient cleaning is easy to occur, namely when an operator operates the laser cleaning machine, light spots formed by the laser light path are not easy to overlap well when moving on the workpiece in a reciprocating manner, so that the surface of the cleaned workpiece has obvious linear stripes, and the cleaning quality of the workpiece is reduced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the spot rotary type laser processing head which has a large spot area and improves the cleaning quality of a workpiece.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a facula rotation type laser beam machining head, includes the casing, the casing is inside to be established to hollow structure, the one end of casing is connected with the laser conveyor who is used for transmitting the laser beam to the casing is inside, the casing is inside to be equipped with the whole device of partially being connected with laser conveyor, the one end that the laser conveyor was kept away from to the whole device of partially being connected with laser rotary device, the one end that laser rotary device kept away from whole device of partially being connected with main laser pendulous device, main laser pendulous device is including the main speculum that is used for changing the laser beam transmission direction of laser rotary device light-emitting side, the laser beam after the main speculum reflection is carried to a main mirror that shakes, one side of main mirror that shakes is connected with the main swing driver that is located the casing.

By adopting the technical scheme, the laser conveying device is used for providing the laser beam, the laser beam is changed into the parallel beam after passing through the deviation rectifying device, the energy density of the laser beam is ensured, the divergence effect is obvious after the transmission distance of the laser beam is too long, and the cleaning quality is reduced. The laser rotating device and the main laser swinging device are matched with each other, an acute angle is formed between the axis of a laser beam at the light inlet side of the laser rotating device and the axis of a laser beam at the light outlet side of the laser rotating device, the movement track of the laser beam at the light outlet side of the laser rotating device is circular, after the laser beam is reflected by the main reflecting mirror, the laser beam at the light outlet side of the laser rotating device is reflected to the main vibrating mirror, the main vibrating mirror continuously swings along with the main swinging driver, and the reflected laser beam is emitted from a port of the shell. In the process of swinging the main vibration mirror, because the included angle between the reflecting end surface of the main vibration mirror and the laser beam is continuously changed, the emission direction of the laser beam emitted from the port of the shell is also continuously changed, meanwhile, the laser beam emitted from the port of the shell is subjected to the compound motion of circle and straight line by the rotation of the laser rotating device, and the laser beam draws circle in the process of reciprocating movement, so that an operator observes that a laser spot irradiated on the surface of a workpiece is a wider rectangular line segment.

The length and the width of the laser spot irradiated on the workpiece are increased, so that when an operator uses the laser processing head to work, the front path and the rear path of the laser spot are easy to overlap, the workpiece is fully cleaned, the phenomenon of dirt leaving is not easy to occur, and the workpiece cleaning quality is improved. Meanwhile, the area of the laser spot is increased, the coverage area is increased, the time for cleaning the workpiece is reduced, and the cleaning efficiency is improved.

In addition, the laser rotating device is matched with the main laser swinging device, so that the laser beam does linear motion while drawing a circle, the energy density of the laser beam is ensured, the dirt on the workpiece is more fully cleaned when the laser processing head cleans the workpiece due to the guarantee of the energy density, and the cleaning quality of the workpiece is further improved.

The present invention in a preferred example may be further configured to: the main laser swinging device comprises a swinging shell cover connected with the shell, the main reflector and the main vibrating mirror are both positioned inside the swinging shell cover, a mirror seat which is used for connecting the main reflector and is integrally formed with the swinging shell cover is arranged inside the swinging shell cover, the main swinging driver is rotatably connected with the swinging shell cover, a clamping assembly used for reducing the shaking of the main swinging driver is arranged on the swinging shell cover, and a mirror clamp connected with the output end of the main swinging driver is detachably connected to the main vibrating mirror.

Through adopting above-mentioned technical scheme, after being equipped with the swing clamshell, the main swing driver is direct to be connected with the swing clamshell, the output of main swing driver passes the side of swing clamshell again and drives the main mirror swing that shakes, the main swing driver is convenient for fix, it is more firm to make the installation of main swing driver, thereby more stable when the motion, difficult emergence is rocked, main swing driver stability improves, swing speed upper limit improves, main swing driver wobbling is faster, thereby make the main swing speed who shakes the mirror improve. The laser facula is actually a quick swing and makes people's eyes discern a light, in the application, if the swing speed of laser facula is less, causes the work piece to wash inadequately easily, and improves the swing speed of main mirror that shakes, has effectively promoted the number of times of laser facula reciprocating motion in the unit interval to make the cleaning quality of work piece improve, be difficult for remaining the dirt that people's eyes were difficult for discovering.

The clamping assembly further improves the stability of the main swing driver, improves the upper limit of the rotation rate of the main swing driver, further improves the reciprocating times of the laser facula in unit time, and ensures the cleaning quality of workpieces. The mirror clamp and the mirror base improve the stability of the main vibrating mirror and the main reflecting mirror, and when the laser processing head drops or collides, the main vibrating mirror and the main reflecting mirror are not easy to displace, so that the normal conduction of laser beams is ensured.

The present invention in a preferred example may be further configured to: the laser rotating device comprises a hollow motor connected with a deviation rectifying device and a main laser swinging device respectively, the hollow motor is internally connected with a first wedge-shaped mirror rotating along with the hollow motor, a laser beam on the light-emitting side of the deviation rectifying device is conveyed to the first wedge-shaped mirror, and the light-emitting side of the first wedge-shaped mirror is provided with a focusing mirror connected with the hollow motor.

By adopting the technical scheme, the outer peripheral side of the axis of the hollow motor is designed into a hollow structure, so that the first wedge-shaped mirror and the focusing mirror can be conveniently connected, the hollow motor directly drives the first wedge-shaped mirror to rotate, and the rotating speed of the first wedge-shaped mirror is ensured. The rotating speed of the first wedge-shaped mirror is increased, the frequency of circular movement of the laser beam is increased, the coverage area of laser spots is increased, dirt is not prone to remaining on the surface of a workpiece when the laser processing head is used for cleaning the workpiece, and the cleaning quality of the workpiece is improved.

The focusing mirror is used for gathering light beams and improving the energy density of laser spots. The laser beam at the light-emitting side of the focusing mirror moves in a circular track, so that the coverage area of laser spots is increased. Therefore, the area of the laser spot on the workpiece is increased, the energy density of the laser spot is improved, and the cleaning quality of the workpiece is guaranteed.

The present invention in a preferred example may be further configured to: and a second wedge-shaped mirror rotating along with the hollow motor is arranged between the focusing mirror and the first wedge-shaped mirror, and the horizontal end face of the first wedge-shaped mirror is adjacent to the horizontal end face of the second wedge-shaped mirror.

Through adopting above-mentioned technical scheme, the light-emitting side of first wedge mirror is equipped with the second wedge mirror that follows hollow motor synchronous revolution. The second wedge-shaped mirror refracts the laser beam refracted by the first wedge-shaped mirror for the second time, and deflects the direction of the laser beam again. Meanwhile, the distance between the second wedge-shaped mirror and the first wedge-shaped mirror is convenient for adjusting the size of the circular motion track of the laser beam, namely, if the distance between the second wedge-shaped mirror and the first wedge-shaped mirror is increased, the diameter of the circular motion track formed by the laser beam at the light outlet side of the focusing mirror is larger; on the contrary, the diameter of the circular motion track formed by the laser beam on the light-emitting side of the focusing mirror is smaller. An operator adjusts the distance between the first wedge-shaped mirror and the second wedge-shaped mirror according to the rotating speed of the hollow motor, so that the laser line segment formed on the workpiece is a full line segment, and the cleaning quality of the workpiece is ensured.

The present invention in a preferred example may be further configured to: the polarization rectifying device comprises a collimating mirror.

By adopting the technical scheme, the laser beams emitted by the laser conveying device are collimated into parallel beams by the collimating mirror, and the energy density of the laser beams on the light incident side of the first wedge-shaped mirror is ensured.

The present invention in a preferred example may be further configured to: the laser conveying device comprises a connecting insertion pipe, one end of the connecting insertion pipe is located inside the shell and communicated with the deflection correcting device, one end of the connecting insertion pipe is located outside the shell and connected with a connecting plug, and the connecting plug is connected with a conveying optical fiber in an inserting mode.

Through adopting above-mentioned technical scheme, connect intubate and connecting plug and be convenient for the laser beam machining head to connect and carry optic fibre, the laser beam machining head when not using, and convenient to detach carries optic fibre, makes the laser beam machining head be convenient for accomodate, improves the practicality of laser beam machining head. The laser beam is transmitted by using the conveying optical fiber, so that the laser processing head can conveniently realize remote operation, the laser processing head can clean the part which is not easy to clean on the workpiece, the full cleaning of the workpiece is ensured, and the cleaning quality of the workpiece is improved.

The present invention in a preferred example may be further configured to: the laser swinging device comprises a shell, and is characterized in that a cooling device is connected to the outer peripheral surface of the shell and comprises a fan connected with the shell, an air guide cover connected with the shell is arranged on the outer peripheral side of the fan, and an air guide pipe is arranged on one side, close to the light emitting side of the main laser swinging device, of the air guide cover.

Through adopting above-mentioned technical scheme, the cold air current that the fan produced flows to the work piece surface along the guide duct, when cooling off the work piece surface, also blows off the piece that the work piece surface clearance comes down from the work piece surface, avoids piece viscidity great, and the adhesion is on the work piece surface once more, and when reducing work piece cleaning quality, operating personnel need clear up the work piece once more, reduces the cleaning quality of work piece.

The present invention in a preferred example may be further configured to: the shell is provided with a plurality of radiating grooves.

Through adopting above-mentioned technical scheme, the radiating groove has the radiating effect, discharges the heat energy that hollow motor and main swing driver produced outside the casing, prolongs the life of laser beam machining head.

The present invention in a preferred example may be further configured to: the laser device comprises a shell, and is characterized in that a second laser conveying device, a second deviation rectifying device and a second laser rotating device are arranged in the shell, an auxiliary laser swinging device is arranged on the light emitting side of the second laser rotating device, and the auxiliary laser swinging device comprises an auxiliary reflecting mirror, an auxiliary vibrating mirror and an auxiliary swinging driver for driving the auxiliary vibrating mirror to swing.

Through adopting above-mentioned technical scheme, be provided with second set of laser beam in the laser beam machining head and wash the structure, included second laser conveyor, second whole deviation and penetrate device, second laser rotary device and vice laser pendulous device. The swing angles of the main vibrating mirror and the auxiliary vibrating mirror are adjusted, so that a rectangular line segment formed on the surface of a workpiece by a laser beam reflected by the main vibrating mirror and a rectangular line segment formed on the surface of the workpiece by a laser beam reflected by the auxiliary vibrating mirror coincide with each other, namely, a line segment is actually formed on the surface of the workpiece by two rectangular line segments. Or the swing angles of the main vibrating mirror and the auxiliary vibrating mirror are reduced, so that two rectangular line segments are connected into a line segment on the surface of the workpiece, the swing angles of the main vibrating mirror and the auxiliary vibrating mirror are reduced, the length of the mapped rectangular line segment is shortened, the length of the line segment formed after the two rectangular line segments are connected is equal to the length of the rectangular line segment formed when the swing angle of the main vibrating mirror is not reduced, but the swing angles of the main vibrating mirror and the auxiliary vibrating mirror are reduced, so that the swing frequency of the main vibrating mirror and the auxiliary vibrating mirror is accelerated, the workpiece is cleaned more fully, and the cleaning quality of the workpiece is improved.

The present invention in a preferred example may be further configured to: and the swing directions of the auxiliary vibrating mirror and the main vibrating mirror in the same time period are opposite.

By adopting the technical scheme, the swinging directions of the main vibrating mirror and the auxiliary vibrating mirror in the same period of time are opposite, and the opposite swinging directions ensure that the moving directions of two laser spots in a rectangular line section formed on a workpiece are opposite, so that the swinging frequency of the laser spots in the rectangular line section formed on the workpiece is high, and the cleaning quality of the workpiece is further ensured.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the laser rotating device enables the laser beam to form a circular motion track, the main laser swinging device enables the laser beam to form a linear motion track on the basis of the circular motion track, the laser beam forms a circular and linear composite motion track, and a rectangular line section with a wide width is formed on the surface of a workpiece;

2. the clamping assembly and the swing shell cover fix the main swing driver, so that the stability of the main swing driver is improved, the frequency of the main swing driver driving the main vibration mirror to swing is accelerated, dirt is not easy to remain on a workpiece when light spots on the workpiece do linear swing, and the large cleaning quality of the workpiece is further improved;

3. the second set of device for emitting the laser beams is arranged in the shell, and the two laser beams jointly form a laser line section, so that the surface of a workpiece is cleaned more fully when the laser processing head is used, and the cleaning quality of the workpiece is improved.

Drawings

Fig. 1 is a schematic overall configuration diagram of a laser processing head according to a first embodiment;

fig. 2 is an exploded view of the laser processing head of the first embodiment;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

fig. 4 is an exploded view of the laser swivel device of the first embodiment;

FIG. 5 is a schematic diagram of the internal structure of the primary laser oscillating device according to the first embodiment;

fig. 6 is a schematic view of the laser processing head according to the first embodiment in operation;

fig. 7 is a schematic view of the internal structure of the laser processing head of the second embodiment;

fig. 8 is a schematic view of a laser processing head of the second embodiment in an operating state of one;

fig. 9 is a schematic view of the second embodiment in the second laser processing head operating state.

In the figure, 1, a housing, 11, a second laser conveying device, 12, a second polarization modifying device, 13, a second laser rotating device, 14, a secondary laser swinging device, 141, a secondary vibrating mirror, 142, a secondary swinging driver, 2, a laser conveying device, 21, a connecting insertion tube, 22, a connecting plug, 23, a conveying optical fiber, 3, a polarization modifying device, 31, a collimating mirror, 4, a laser rotating device, 41, a hollow motor, 42, a first wedge mirror, 43, a focusing mirror, 44, a second wedge mirror, 5, a main laser swinging device, 51, a main mirror, 52, a main vibrating mirror, 53, a main swinging driver, 54, a swinging housing, 55, a mirror base, 56, a clamping component, 561, a clamping plate, 57, a mirror clamp, 6, a cooling device, 61, a fan, 62, an air guide cover, 63, an air guide pipe, 7, and a heat dissipation groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, the rotary laser processing head for the light spot disclosed by the invention comprises a shell 1, wherein the shell 1 is divided into two parts, the two parts are mutually buckled and connected, and openings are arranged at two ends of the shell 1.

Referring to fig. 2, a laser conveying device 2, a polarization adjustment device 3, a laser rotating device 4, and a main laser swing device 5 are sequentially provided inside a housing 1. The laser delivery device 2 comprises a connection insertion tube 21, one end of the connection insertion tube 21 is located inside the housing 1 and connected with the polarization adjustment device 3, the other end of the connection insertion tube 21 is located outside the housing 1 and fixedly connected with a connection plug 22, a delivery optical fiber 23 is inserted and connected in the connection plug 22, and the delivery optical fiber 23 transmits laser beams to the inside of the housing 1 through the laser delivery device 2.

Referring to fig. 2, the polarization correcting device 3 includes a collimating mirror 31, one end of the collimating mirror 31 is communicated with the connecting cannula 21, and one end of the collimating mirror 31 far away from the connecting cannula 21 is communicated with the laser rotating device 4. After the laser beam in the connecting cannula 21 is transmitted to the collimating lens 31, the laser beam is changed from a divergent light source to a parallel light source through refraction of the collimating lens 31, that is, the laser beam on the light-emitting side of the collimating lens 31 forms a cylindrical light column.

Referring to fig. 3, the housing 1 is provided with a plurality of heat dissipation grooves 7, heat energy inside the housing 1 flows to the outside of the housing 1 through the heat dissipation grooves 7, and the heat dissipation grooves 7 prolong the service life of the laser processing head.

Referring to fig. 4, the laser beam on the light outgoing side of the collimator lens 31 (shown in fig. 2) is transmitted to the laser rotating device 4, the laser rotating device 4 includes a hollow motor 41, and a first wedge lens 42, a second wedge lens 44 and a focusing lens 43 are fixedly connected to the inside of the hollow motor 41. The first wedge-shaped mirror 42 is close to the light-in side of the hollow motor 41, the focusing mirror 43 is close to the light-out side of the hollow motor 41, and the second wedge-shaped mirror 44 is located between the first wedge-shaped mirror 42 and the focusing mirror 43. The first wedge-shaped mirror 42, the second wedge-shaped mirror 44 and the focusing mirror 43 rotate synchronously along with the hollow motor 41, and the horizontal end faces of the first wedge-shaped mirror 42 and the second wedge-shaped mirror 44 are arranged adjacently. After passing through the first wedge-shaped mirror 42, the laser beam on the light incident side of the hollow motor 41 undergoes angular shift due to refraction, and then passes through the second wedge-shaped mirror 44, the laser beam undergoes irradiation angular shift again, the laser beam shifts to the thicker side of the first wedge-shaped mirror 42 and the second wedge-shaped mirror 44, and an angle is formed between the laser beam axis on the light emergent side of the hollow motor 41 and the axis before the laser beam enters the hollow motor 41. Since the first wedge-shaped mirror 42 and the second wedge-shaped mirror 44 both rotate along with the hollow motor 41, the light beam of the laser beam on the light-emitting side of the focusing mirror 43 forms a circular motion track. The focusing mirror 43 performs a light condensing function, and improves the energy density of the laser beam on the light exit side of the focusing mirror 43.

Referring to fig. 5, the laser beam on the light outgoing side of the focusing mirror 43 (see fig. 4) is transmitted to the main laser swing device 5, the main laser swing device 5 includes a swing housing 54 fixedly connected to the hollow motor 41 (see fig. 4), a mirror base 55 integrally formed with the swing housing 54 is provided in the swing housing 54, and a main mirror 51 is fixedly connected to the mirror base 55. The laser beam entering the main laser swing device 5 is straightly irradiated on the main mirror 51, the laser beam is reflected by the main mirror 51 and is mapped on the main oscillating mirror 52 located inside the swing case 54, and the laser beam is reflected by the main oscillating mirror 52 and is emitted from the opening of the housing 1 (see fig. 1). One side of the main galvanometer 52 is connected in a mirror clamp 57 in an inserting manner, and one end of the mirror clamp 57 far away from the main galvanometer 52 is fixedly connected with the output end of a main swing driver 53. The main swing driver 53 may be a servo motor, the main swing driver 53 is located outside the swing shell 54 and is fixedly connected to the swing shell 54, an output end of the main swing driver 53 passes through a side wall of the swing shell 54 and is located inside the swing shell 54, and an output end of the main swing driver 53 is rotatably connected to the swing shell 54 through a bearing. The main swing driver 53 continuously switches forward and reverse rotation to enable the main oscillating mirror 52 to continuously swing along with the main swing driver 53, the swing angle of the main oscillating mirror 52 is set according to the actual use condition of the laser processing head, if the swing angle of the main oscillating mirror 52 is increased, the switching frequency of the forward and reverse rotation of the main swing driver 53 is reduced, and otherwise, the switching frequency of the forward and reverse rotation of the main swing driver 53 is increased to reduce the swing angle of the main oscillating mirror 52. The angle of oscillation of the galvanometer mirror 52 is dependent on the length of the laser line segment that is ultimately formed on the surface of the workpiece, although an operator may adjust the length of the laser line segment on the workpiece by adjusting the distance between the laser machining head and the workpiece.

Referring to fig. 2, a clamping assembly 56 is arranged between the main swing actuator 53 and the swing shell 54, the clamping assembly 56 includes two clamping plates 561, the clamping plates 561 are connected with the swing shell 54 through threads, when the two clamping plates 561 are abutted against each other, a clamping groove is formed in the center, the main swing actuator 53 passes through the clamping groove and is abutted by the clamping plates 561, and the clamping assembly 56 improves the stability of the main swing actuator 53.

The implementation principle of the embodiment is as follows: referring to fig. 6, the delivery fiber 23 transmits the laser beam to the collimator lens 31, the laser beam on the light-in side of the collimator lens 31 becomes divergent laser, and the collimator lens 31 compresses the divergent angle of the divergent laser, so that the laser beam on the light-out side of the collimator lens 31 becomes parallel light. Then the laser beam is transmitted to the laser rotating device 4 from the light-emitting side of the collimating mirror 31, the laser beam is refracted by the laser rotating device 4, the movement track of the light-emitting side of the laser rotating device 4 is circular, the laser beam which is continuously drawn into a circle is transmitted to the main reflecting mirror 51 from the light-emitting side of the laser rotating device 4, and is transmitted to the main vibrating mirror 52 through the reflection of the main reflecting mirror 51, and the main vibrating mirror 52 continuously swings and reflects the laser beam to the shell of the shell 1. The laser beam on the shell of the shell 1 irradiates on the surface of a workpiece to form a laser spot, and the irradiation direction of the laser beam when the laser beam is emitted out of the shell 1 is continuously changed by the swinging main vibration mirror 52 while the laser beam does a circle drawing motion, so that the laser spot irradiating on the surface of the workpiece does a linear motion and also automatically draws a circle, and the laser spot forms a laser line segment. And an operator cleans the surface of the workpiece by moving the laser processing head. In addition, the laser processing head can be used for cleaning workpieces, and can also be used in the fields of laser welding, laser drilling or laser cutting and the like, so that the laser processing difficulty is reduced, the processing efficiency is improved, and the processing quality of the workpieces is improved.

Example two:

referring to fig. 7, the difference from the first embodiment is that the same side of the polarization adjustment device 3 is provided with a second laser conveying device 11, a second polarization adjustment device 12, a second laser rotating device 13 and a secondary laser oscillating device 14 which are respectively arranged corresponding to the laser conveying device 2, the polarization adjustment device 3, the laser rotating device 4 and the primary laser oscillating device 5. The laser conveying device 2 and the second laser conveying device 11 are identical in structure, the polarization adjusting device 3 and the second polarization adjusting device 12 are identical in structure, the laser rotating device 4 and the second laser rotating device 13 are identical in structure, and the main laser swinging device 5 and the auxiliary laser swinging device 14 are identical in structure. The cooling devices 6 are arranged on two sides of the main laser swing device 5 and the auxiliary laser swing device 14, each cooling device 6 comprises an air guide cover 62 fixedly connected with the shell 1, a fan 61 is connected in each air guide cover 62, and an air guide pipe 63 integrally formed with each air guide cover 62 is arranged on one side, close to the light emitting side of the main laser swing device 5, of each air guide cover 62. After the fan 61 is started, the fan 61 forms a cold air flow, and the cold air flow flows onto the surface of the workpiece through the air guide pipe 63 to blow the debris on the workpiece away from the workpiece.

The implementation principle of the embodiment is as follows: referring to fig. 8, one laser beam is transmitted from the laser delivery device 2, the polarization adjustment device 3, the laser rotation device 4 and the main laser swing device 5, and one laser beam is transmitted from the second laser delivery device 11, the second polarization adjustment device 12, the second laser rotation device 13 and the sub laser swing device 14, and the two laser beams are emitted from the housing 1 from the same side of the housing 1 and irradiated on the surface of the workpiece. The operator reduces the swing angle of the main galvanometer 52 and the auxiliary galvanometer 141, so that the two laser beams form two laser line segments connected together on the surface of the workpiece.

Referring to fig. 7 and 8, when the operator reduces the swing angles of the main galvanometer 52 and the sub galvanometer 141, by adjusting the main swing driver 53 and the sub swing driver 142, since the swing angles of the main galvanometer 52 and the sub galvanometer 141 are reduced, the rotation paths of the main swing driver 53 and the sub swing driver 142 are shortened, thereby increasing the switching frequency of the positive and negative rotation of the main swing driver 53 and the auxiliary swing driver 142, increasing the swing frequency of the main vibrating mirror 52 and the auxiliary vibrating mirror 141, increasing the times of reciprocating motion of laser spots formed by two laser beams in unit time, fully cleaning the surface of a workpiece, avoiding the over-slow swing frequency of the laser beams, the over-fast movement of an operator when controlling a laser processing head and the failure of the laser spots to clean dirt on the workpiece, the laser processing head is moved by an operator, so that the workpiece is insufficiently cleaned and the cleaning quality of the workpiece is low.

Referring to fig. 7 and 9, when the main galvanometer 52 and the sub galvanometer 141 are adjusted, laser line segments formed by two laser beams may be overlapped to form a same laser line segment. When the operator adjusts the main swing driver 53 and the auxiliary swing driver 142, the rotation directions of the main vibration mirror 52 and the auxiliary vibration mirror 141 are opposite in the same time period, so that laser spots formed by the two laser beams on the workpiece continuously move in opposite directions or in opposite directions, the two laser beams move in a staggered manner, the surface of the workpiece is irradiated more fully by the laser spots, the workpiece is fully cleaned, and the cleaning quality of the workpiece is improved.

In addition, the laser processing head includes, but is not limited to, laser cleaning, such as laser welding, laser drilling, or laser cutting. The processing difficulty can be reduced, the processing efficiency is improved, and the processing quality is improved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (10)

1. The utility model provides a facula rotation type laser beam machining head, includes casing (1), casing (1) is inside to be established to hollow structure, the one end of casing (1) is connected with laser conveyor (2) that are used for transmitting the laser beam to casing (1) inside, its characterized in that: the laser polarization device comprises a shell (1), and is characterized in that a polarization adjusting device (3) connected with a laser conveying device (2) is arranged in the shell (1), one end, far away from the laser conveying device (2), of the polarization adjusting device (3) is connected with a laser rotating device (4), one end, far away from the polarization adjusting device (3), of the laser rotating device (4) is connected with a main laser swinging device (5), the main laser swinging device (5) comprises a main reflecting mirror (51) used for changing the transmission direction of laser beams on the light outlet side of the laser rotating device (4), the laser beams reflected by the main reflecting mirror (51) are conveyed to a main vibrating mirror (52), and one side of the main vibrating mirror (52) is connected with a main swinging driver (53) which is located in the shell (1) and is connected with the shell (1).

2. A spot rotary laser machining head as claimed in claim 1, wherein: the main laser swinging device (5) comprises a swinging shell cover (54) connected with the shell (1), the main reflector (51) and the main vibrating mirror (52) are both positioned inside the swinging shell cover (54), a mirror base (55) which is used for connecting the main reflector (51) and is integrally formed with the swinging shell cover (54) is arranged inside the swinging shell cover (54), the main swinging driver (53) is rotatably connected with the swinging shell cover (54), a clamping component (56) which is used for reducing the swinging of the main swinging driver (53) is arranged on the swinging shell cover (54), and a mirror clamp (57) which is connected with the output end of the main swinging driver (53) is detachably connected to the main vibrating mirror (52).

3. A spot rotary laser machining head as claimed in claim 1, wherein: laser rotary device (4) are including cavity motor (41) of being connected with whole deviation device (3) and main laser pendulous device (5) respectively, cavity motor (41) internal connection has follows cavity motor (41) pivoted first wedge mirror (42), the laser beam of whole deviation device (3) light-emitting side is carried to first wedge mirror (42) on, the light-emitting side of first wedge mirror (42) is equipped with focus mirror (43) of being connected with cavity motor (41).

4. A spot rotary laser machining head as claimed in claim 3, wherein: a second wedge-shaped mirror (44) rotating along with the hollow motor (41) is arranged between the focusing mirror (43) and the first wedge-shaped mirror (42), and the horizontal end face of the first wedge-shaped mirror (42) is adjacent to the horizontal end face of the second wedge-shaped mirror (44).

5. A spot rotary laser machining head as claimed in claim 1, wherein: the polarization rectifying device (3) comprises a collimating mirror (31).

6. A spot rotary laser machining head as claimed in claim 1, wherein: the laser conveying device (2) comprises a connecting insertion tube (21), one end of the connecting insertion tube (21) is located inside the shell (1) and communicated with the deviation rectifying device (3), one end of the connecting insertion tube (21) is located outside the shell (1) and connected with a connecting plug (22), and a conveying optical fiber (23) is connected in the connecting plug (22) in an inserting mode.

7. A spot rotary laser machining head as claimed in claim 1, wherein: the laser oscillating device is characterized in that a cooling device (6) is connected to the outer peripheral surface of the shell (1), the cooling device (6) comprises a fan (61) connected with the shell (1), an air guide cover (62) connected with the shell (1) is arranged on the outer peripheral side of the fan (61), and an air guide pipe (63) is arranged on one side, close to the light emergent side of the main laser oscillating device (5), of the air guide cover (62).

8. A spot rotary laser machining head as claimed in claim 1, wherein: the shell (1) is provided with a plurality of radiating grooves (7).

9. A spot rotary laser machining head as claimed in claim 1, wherein: be equipped with second laser conveyor (11), second deviation rectification device (12) and second laser rotary device (13) in casing (1), the light-emitting side of second laser rotary device (13) is equipped with vice laser pendulous device (14), vice laser pendulous device (14) are including vice mirror (141) that shakes and drive vice mirror (141) wobbling vice pendulum driver (142).

10. A spot rotary laser machining head as claimed in claim 9 wherein: the swing directions of the secondary vibrating mirror (141) and the primary vibrating mirror (52) in the same time period are opposite.

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