CN219425919U

CN219425919U - Handheld laser welding gun and laser welding equipment

Info

Publication number: CN219425919U
Application number: CN202223422967.8U
Authority: CN
Inventors: 李文龙; 彭仁雄; 熊俊; 丁兵; 高云峰
Original assignee: Shenzhen Han's Scanner S&t Co ltd; Han s Laser Technology Industry Group Co Ltd
Current assignee: Shenzhen Han's Scanner S&t Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-07-28
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a handheld laser welding gun and laser welding equipment, wherein the handheld laser welding gun comprises: a housing having a handle assembly and a nozzle assembly; the first vibrating mirror assembly is arranged in the shell; the second galvanometer assembly is arranged in the shell, the laser beam incident by the handle assembly is reflected by the second galvanometer assembly after being reflected by the first galvanometer assembly, and is emitted by the nozzle assembly after being focused, and the part to be welded is welded; the included angle between the axis of the first vibrating mirror component and the axis of the second vibrating mirror component is alpha, alpha is more than or equal to 60 degrees and less than or equal to 75 degrees, and the included angle between the incident laser beam and the emergent laser beam is beta, wherein beta=180-alpha. The technical scheme of the utility model has the advantage of simple structure of the handheld laser welding gun.

Description

Handheld laser welding gun and laser welding equipment

Technical Field

The utility model relates to the technical field of laser processing, in particular to a handheld laser welding gun and laser welding equipment using the same.

Background

The hand-held laser welding mainly uses laser high heat energy and concentrates a welding technology of fixed points, utilizes high-energy laser pulse to locally heat a material in a micro area, and leads the energy of laser radiation to the internal diffusion of the material through heat transfer, so that the material is melted to form a specific molten pool.

The inside two mirror components that shake that are equipped with of handheld biax laser welder, among the relevant technique, the laser beam of incidence is after two mirror components reflection shakes, welds the position of treating welded after focusing, can increase the speculum in laser reflection route in order to satisfy the convenient handheld laser welder of operating personnel ability, is used for changing the direction of laser beam for the direction that draws the laser beam and accords with ergonomic principle more, but can make handheld laser welder's structure comparatively complicated.

Disclosure of Invention

The utility model provides a handheld laser welding gun, which is simple in structure.

The utility model provides a handheld laser welding gun, which comprises:

a housing having a handle assembly and a nozzle assembly;

the first vibrating mirror assembly is arranged in the shell; and

the second galvanometer assembly is arranged in the shell, the laser beam incident by the handle assembly is reflected by the second galvanometer assembly after being reflected by the first galvanometer assembly, and is emitted by the nozzle assembly after being focused, and the part to be welded is welded;

the included angle between the axis of the first vibrating mirror component and the axis of the second vibrating mirror component is alpha, alpha is more than or equal to 60 degrees and less than or equal to 75 degrees, and the included angle between the incident laser beam and the emergent laser beam is beta, wherein beta=180-alpha.

Alternatively, α=70°.

Optionally, the axis of the first galvanometer assembly is perpendicular to the incident laser beam.

Optionally, the casing is provided with a first installation cavity, a second installation cavity and a reflection cavity, and the first installation cavity and the second installation cavity are communicated with the reflection cavity;

the first vibrating mirror assembly comprises a first rotary driving piece and a first vibrating mirror piece which are connected, the first rotary driving piece is arranged in the first mounting cavity, and the first vibrating mirror piece extends into the reflecting cavity;

the second vibrating mirror assembly comprises a second rotary driving piece and a second vibrating mirror piece which are connected, the second rotary driving piece is arranged in the second installation cavity, and the second vibrating mirror piece stretches into the reflection cavity;

the laser beam is incident into the reflecting cavity, is reflected by the first vibrating mirror plate and the second vibrating mirror plate in the reflecting cavity in sequence, and is emitted by the nozzle assembly after being focused.

Optionally, the casing includes a casing body and a cover plate, where the casing body has a first side wall surface and a second side wall surface that are oppositely disposed, and a peripheral wall surface that is circumferentially disposed outside the first side wall surface and the second side wall surface, and the peripheral wall surface connects the first side wall surface and the second side wall surface;

the shell main body is provided with a mounting groove which penetrates through the first side wall surface and extends towards the second side wall surface; the cover plate is detachably connected with the first side wall surface and covers the mounting groove to form the reflecting cavity.

Optionally, the peripheral wall surface has a first mounting portion, the first mounting cavity penetrates through the first mounting portion and an inner wall surface of the reflecting cavity, and the casing further includes a first mounting cover that covers the first mounting portion and blocks the first mounting cavity.

Optionally, the peripheral wall surface has a connecting portion, and the handle assembly is connected to the connecting portion;

the connecting part is provided with a via hole communicated with the reflecting cavity, and laser beams enter the reflecting cavity through the handle assembly and the via hole and are reflected by the first vibrating lens.

Optionally, the handle assembly is equipped with first passageway and second passageway, and laser beam warp first passageway gets into the reflection chamber, the casing is equipped with cooling runner and intercommunication cooling runner's inlet and liquid outlet, cooling pipeline wears to locate the second passageway, and the intercommunication the inlet with the liquid outlet.

Optionally, the casing is further provided with an air flow channel and an air inlet communicated with the air flow channel, and the air pipe penetrates through the second channel and is communicated with the air inlet;

gas enters the gas flow channel through the gas inlet and is ejected out through the nozzle assembly.

The utility model also provides a laser welding device which comprises a welding host and a handheld laser welding gun,

the hand-held laser welding gun comprises:

a housing having a handle assembly and a nozzle assembly;

the first vibrating mirror assembly is arranged in the shell; and

the included angle between the axis of the first vibrating mirror component and the axis of the second vibrating mirror component is alpha, alpha is more than or equal to 60 degrees and less than or equal to 75 degrees, the included angle between the incident direction of the laser beam and the emergent direction of the laser beam is beta,

β＝180°-α；

the handheld laser welding gun is connected with the welding host, and the welding host transmits energy to the handheld laser welding gun.

According to the technical scheme, the shell is used for installing the functional components of the handheld laser welding gun and protecting the functional components from being damaged by the external environment. The functional components can comprise a first galvanometer component and a second galvanometer component, wherein the first galvanometer component and the second galvanometer component are both arranged in the shell and are used for reflecting an incident laser beam, so that the laser beam propagates according to a reflected path.

In the handheld laser welding gun of the technical scheme, the included angle between the axis of the first vibrating mirror assembly and the axis of the second vibrating mirror assembly is alpha, the included angle between the incident laser beam and the emergent laser beam is beta, and the included angle beta between the incident laser beam and the emergent laser beam is 180-alpha, and the included angle beta between the incident laser beam and the emergent laser beam is in the range of: beta is more than or equal to 105 degrees and less than or equal to 120 degrees.

Because the laser beam is incident by the handle component of the shell and is emitted by the nozzle component of the shell, the incident laser beam is consistent with the extending direction of the handle component, the extending direction of the emitted laser beam is consistent with the extending direction of the nozzle component, and the included angle between the extending direction of the handle component and the extending direction of the nozzle component is known to be beta.

According to the technical scheme, the handheld laser welding gun is only through changing the axis included angle of the first vibrating mirror assembly and the axis included angle of the second vibrating mirror assembly, the incident laser beams and the emergent laser beams meet the ergonomic requirements, other reflecting mirrors in the related technology are omitted, the parts of the handheld laser welding gun are fewer, the shell structure is simpler, the size of the whole handheld laser welding gun is smaller, and the handheld laser welding gun is high in flexibility, convenient to operate and convenient to maintain in the use process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a handheld laser welding gun according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the handheld laser welding gun of FIG. 1;

FIG. 3 is a schematic view of a structure in which a laser beam is reflected by a first galvanometer assembly and a second galvanometer assembly in the handheld laser welding gun of FIG. 1;

FIG. 4 is a front view of the structure of FIG. 3;

FIG. 5 is a schematic illustration of the handle assembly of the handheld laser welding gun of FIG. 1;

fig. 6 is a schematic structural view of a shell main body in the hand-held laser welding gun of fig. 1.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1, the present utility model provides a handheld laser welding gun 100, where the handheld laser welding gun 100 is applicable to a laser welding apparatus, and the laser welding apparatus mainly includes a welding host (not shown) and the handheld laser welding gun 100, where the handheld laser welding gun 100 is connected to the welding host, and the welding host provides welding energy for a laser welding mechanism. Specifically, the welding host and the handheld laser welding gun 100 may be connected by a cable, and the welding host inputs the laser source through the cable to the handheld laser welding gun 100.

The hand-held laser welding gun 100 according to the embodiment of the present utility model includes:

a housing 10, the housing 10 having a handle assembly 60 and a nozzle assembly 70 attached thereto;

the first vibrating mirror assembly 30, the first vibrating mirror assembly 30 is installed in the chassis 10; and

the second galvanometer assembly 50, the second galvanometer assembly 50 is installed in the chassis 10, the laser beam 90 incident by the handle assembly 60 is reflected by the second galvanometer assembly 50 after being reflected by the first galvanometer assembly 30, and is emitted by the nozzle assembly 70 after being focused, and the part to be welded is welded;

referring to fig. 2, 3 and 4, the included angle between the axis of the first galvanometer assembly 30 and the axis of the second galvanometer assembly 50 is α,60 ° or more and 75 ° or less, and the included angle between the incident laser beam 90 and the outgoing laser beam 90 is β, β=180° - α.

In the technical scheme of the utility model, the casing 10 is used for installing the functional components of the handheld laser welding gun 100, and protecting the functional components from being damaged by the external environment. The functional components may include a first galvanometer assembly 30 and a second galvanometer assembly 50, where the first galvanometer assembly 30 and the second galvanometer assembly 50 are both mounted in the housing 10 and configured to reflect the incident laser beam 90 such that the laser beam 90 propagates along a reflected path.

In the related art, the axis of the first galvanometer assembly 30 is perpendicular to the axis of the second galvanometer assembly 50, if only the first galvanometer assembly 30 and the second galvanometer assembly 50 are provided, the incident laser beam 90 and the outgoing laser beam 90 are perpendicular, and other reflectors are added on the basis of the first galvanometer assembly 30 and the second galvanometer assembly 50 in the related art, so that the incident laser beam 90 and the outgoing laser beam 90 can be larger than 90 degrees, the ergonomic principle is satisfied, and the use of an operator is facilitated.

In the related art, other reflectors need to be added on the basis of the first vibrating mirror assembly 30 and the second vibrating mirror assembly 50, and then a structure for installing other reflectors needs to be arranged inside the machine shell 10, so that not only are the welding gun parts more, the machine shell 10 is complex in structure, but also the whole welding gun is large in size, and both the use and the maintenance are inconvenient.

Referring to fig. 4, in the handheld laser welding gun 100 according to the technical scheme of the present application, an included angle between an axis of the first galvanometer assembly 30 and an axis of the second galvanometer assembly 50 is α, α is 60 ° or more and is 75 ° or less, an included angle between an incident laser beam 90 and an outgoing laser beam 90 is β, β=180° α, and then an included angle β between the incident laser beam 90 and the outgoing laser beam 90 is within a range of: beta is more than or equal to 105 degrees and less than or equal to 120 degrees.

In the above embodiment, the extending direction of the handle assembly 60 may coincide with the direction of the incident laser beam 90, and the extending direction of the nozzle assembly 70 may coincide with the direction of the outgoing laser beam 90.

Since the laser beam 90 is incident from the handle assembly 60 of the housing 10 and exits from the nozzle assembly 70 of the housing 10, the angle between the extending direction of the handle assembly 60 and the extending direction of the nozzle assembly 70 is also β, and when β meets the above range, the operator can conveniently focus the laser beam 90 exiting from the nozzle assembly 70 on the portion to be welded during the laser welding process of the hand-held handle assembly 60, and the hand-held laser welding gun 100 has high operation flexibility.

According to the technical scheme, the handheld laser welding gun 100 only changes the included angles between the axis of the first vibrating mirror assembly 30 and the axis of the second vibrating mirror assembly 50, so that the included angles between the incident laser beam 90 and the emergent laser beam 90 meet the requirements of human engineering, other reflectors in the related art are omitted, parts of the handheld laser welding gun 100 are fewer, the machine shell 10 is simpler in structure, the whole handheld laser welding gun 100 is smaller in size, and the handheld laser welding gun 100 is high in flexibility, convenient to operate and convenient to maintain in the use process.

In the above embodiment, the value of the included angle α between the axis of the first galvanometer assembly 30 and the axis of the second galvanometer assembly 50 may be: 60 °, 65 °, 70 °, 75 °, or any value between 60 ° and 75 ° may be used. When the value of α is smaller than 60 °, the included angle between the incident laser beam 90 and the outgoing laser beam 90 is too large, so that the operator needs to rotate the hand by a larger angle when aiming the nozzle assembly 70 at the part to be welded in the welding process of the operator holding the handle assembly 60, which is inconvenient to operate; when the value of α is greater than 75 °, the included angle between the incident laser beam 90 and the outgoing laser beam 90 is too small, and when the operator holds the handle assembly 60 to perform welding, the laser beam 90 emitted from the nozzle assembly 70 is too close to the handle assembly 60, so that the hand is easy to interfere with the welding operation of the portion to be welded, and the operation is inconvenient.

With further reference to fig. 4, in the above embodiment, the axis of the first galvanometer assembly 30 is perpendicular to the incident laser beam 90. After the incident laser beam 90 is refracted by the first galvanometer assembly 30, the laser beam 90 may propagate in a direction perpendicular to the incident direction. Specifically, when the extending direction of the handle assembly 60 is in the vertical direction, the axis of the first galvanometer assembly 30 is in the horizontal direction, and when the lens of the first galvanometer assembly 30 is at an angle of 45 ° with the horizontal plane, the laser beam 90 is incident in the vertical direction, can propagate in the horizontal direction after being reflected by the first galvanometer assembly 30, and the laser beam 90 propagating in the horizontal direction can propagate in the desired direction after being reflected by the second galvanometer assembly 50.

In the foregoing embodiment, the extending direction of the handle assembly 60 is in the vertical direction only for the convenience of description, and in fact, in use, an operator holds the handle assembly 60 in any desired position, which corresponds to the relative positional relationship in the foregoing description.

Referring to fig. 5, in the above embodiment, the casing 10 has the first mounting chamber 111, the second mounting chamber 112, and the reflective chamber 113, and the first mounting chamber 111 and the second mounting chamber 112 are both communicated with the reflective chamber 113;

referring to fig. 3, the first galvanometer assembly 30 includes a first rotary driving member 31 and a first galvanometer plate 33 connected, the first rotary driving member 31 is mounted in the first mounting cavity 111, and the first galvanometer plate 33 extends into the reflective cavity 113;

the second galvanometer assembly 50 comprises a second rotary driving piece 51 and a second galvanometer piece 53 which are connected, the second rotary driving piece 51 is arranged in the second installation cavity 112, and the second galvanometer piece 53 extends into the reflection cavity 113;

the laser beam 90 is incident into the reflective cavity 113, is reflected by the first vibrating plate 33 and the second vibrating plate 53 in the reflective cavity 113, is focused, and is emitted from the nozzle assembly 70.

The first rotary driving member 31 can drive the first vibrating plate 33 to rotate along the axis, and the second rotary driving member 51 can drive the second vibrating plate 53 to rotate along the axis. In the laser welding process, the first rotary driving piece 31 and the second rotary driving piece 51 are driven to synchronously swing to draw a circular track when being matched and rotated, and a complex spot track can be drawn through software control.

Only the first installation cavity 111 for installing the first rotary driving piece 31, the second installation cavity 112 for installing the second rotary driving piece 51 and the reflection cavity 113 for accommodating the first vibrating mirror plate 33 and the second vibrating mirror plate 53 are required to be opened on the casing 10, so that the installation of the first vibrating mirror assembly 30 and the second vibrating mirror assembly 50 and the propagation condition of the laser beam 90 are ensured, the casing 10 is simple in structure, and the installation of the first vibrating mirror assembly 30 and the second vibrating mirror assembly 50 is convenient.

The first rotary driving member may be a motor, which is defined as a first motor, and an axis of the first motor is perpendicular to the incident laser beam. The second rotary driving member may be a motor, where the motor is defined as a second motor, and an included angle between an axis of the second motor and an axis of the first motor is α.

The cross section of the inner contour of the first installation cavity 111 may be substantially circular, and the cross section of the inner contour of the second installation cavity 112 may be substantially circular, so that the molding process of the casing 10 is simple. It will be appreciated that the inner contours of the first and second mounting cavities 111, 112 may also be provided in other shapes, depending on the particular configuration of the first and second rotary drives 31, 51, for example, the inner contour of the first mounting cavity 111 may be generally square or polygonal in cross-section, etc., and the inner contour of the second mounting cavity 112 may be generally square or polygonal in cross-section, etc.

Referring to fig. 1 and 2, in the above embodiment, the casing 10 includes the casing body 11 and the cover plate 13, and the casing body 11 has a first side wall surface 114 and a second side wall surface 115 that are disposed opposite to each other, and a peripheral wall surface 116 that is circumferentially disposed outside the first side wall surface 114 and the second side wall surface 115;

the case main body 11 is provided with a mounting groove 1131, and the mounting groove 1131 penetrates the first side wall surface 114 and extends toward the second side wall surface 115; the cover plate 13 is detachably coupled to the first sidewall 114, and covers the mounting groove 1131 to form the reflective cavity 113.

The mounting groove 1131 for accommodating the first vibrating plate 33 and the second vibrating plate 53 is directly processed on the case main body 11, and the mounting groove 1131 is covered by the cover plate 13, so that the reflecting cavity 113 can be sealed, and external pollutants are prevented from entering the reflecting cavity 113, and the propagation of the laser beam 90 is influenced. The operator can also conveniently disassemble the cover plate 13 to view the position states of the first vibrating lens 33 and the second vibrating lens 53 in the reflecting cavity 113, so that the fault point can be conveniently screened in the maintenance process.

Further referring to fig. 5, in the above embodiment, the peripheral wall surface 116 has the first mounting portion 1161, the first mounting chamber 111 penetrates the first mounting portion 1161 and the inner wall surface of the reflecting chamber 113, and the casing 10 further includes the first mounting cover 14, and the first mounting cover 14 is connected to the first mounting portion 1161 and covers the first mounting chamber 111.

In the process of assembling the handheld laser welding gun 100, the first galvanometer assembly 30 can be arranged in the first mounting cavity 111 in a penetrating manner through the first mounting part 1161, the first galvanometer lens 33 is located in the reflecting cavity 113, after the Wang Diyi galvanometer assembly 30 is mounted, the first mounting cover 14 is connected with the first mounting part 1161, and the first galvanometer assembly 30 is covered, so that the first galvanometer assembly 30 is located in the machine shell 10, and the first galvanometer assembly 30 can be protected.

It is to be understood that the peripheral wall 116 may further have a second mounting portion 1162, the second mounting cavity 112 penetrates the second mounting portion 1162 and an inner wall surface of the reflecting cavity 113, and the casing 10 further includes a second mounting cover 15, and the second mounting cover 15 is connected to the second mounting portion 1162 and covers the second mounting cavity 112.

In the process of assembling the handheld laser welding gun 100, the second galvanometer assembly 50 can be arranged in the second mounting cavity 112 in a penetrating manner from the second mounting part 1162, the second galvanometer 53 is positioned in the reflecting cavity 113, after the Wang Dier galvanometer assembly 50 is mounted, the second mounting cover 15 is connected with the second mounting part 1162, and the second galvanometer assembly 50 is covered, so that the second galvanometer assembly 50 is positioned in the machine shell 10, and the second galvanometer assembly 50 can be protected.

As shown in fig. 2, in the above embodiment, the peripheral wall 116 has the connecting portion 1163, and the handle assembly 60 is connected to the connecting portion 1163;

the connection portion 1163 is provided with a via hole communicating with the reflective cavity 113, and the laser beam 90 passes through the handle assembly 60 and enters the reflective cavity 113 through the hole to be reflected by the first vibrating mirror plate 33.

The handle assembly 60 is connected to the housing 10 at a connection 1163, and the laser beam 90 is incident into the reflective cavity 113 through the handle assembly 60. It will be appreciated that a cable for the incident laser light is connected to the handle assembly 60, and that the laser light beam 90 enters the handle assembly 60 via the cable and passes through the aperture into the reflective cavity 113 along the direction of extension of the handle assembly 60.

Specifically, the handle assembly 60 is provided with the collimator assembly 20, and the laser beam 90 diverges into a parallel laser beam 90 after passing through the collimator assembly 20, and the parallel laser beam 90 is projected onto the first galvanometer plate 33 in the reflecting cavity 113, and is reflected by the first galvanometer plate 33.

Referring to fig. 6, in the above embodiment, the handle assembly 60 is provided with the first channel 61 and the second channel 62, the laser beam 90 enters the reflective cavity 113 through the first channel 61, the casing 10 is provided with a cooling channel and a liquid inlet and a liquid outlet which are communicated with the cooling channel, and the cooling pipeline is arranged in the second channel 62 in a penetrating manner and is communicated with the liquid inlet and the liquid outlet.

The cooling medium is introduced into the cooling flow channel through the liquid inlet by the cooling pipeline, the casing 10 is cooled, and the cooling medium cooled by the casing 10 enters the cooling pipeline through the liquid outlet and flows back to the cooling equipment. The cooling medium can circulate in the cooling flow channel and the cooling device to continuously cool the handheld laser welding gun 100 in the working process.

Because the cooling medium flows through the handle assembly 60 before entering the casing 10, the temperature of the handle assembly 60 is ensured to be in a proper range, so that an operator cannot be affected by temperature rise in the process of holding the handle assembly 60, and the hand feeling is good.

The cooling pipe is located at the handle assembly 60 without being exposed to the outside of the housing 10, ensuring a neat shape of the hand-held laser welding gun 100, and the cooling pipe is not easily damaged by high temperature slag splashed during the welding process.

Further, the case main body 11 is provided with the above-mentioned cooling flow passage and a liquid inlet and a liquid outlet communicating with the cooling flow passage. Further, the liquid inlet and the liquid outlet are both disposed at the connecting portion 1163. Because the handle assembly covers the connecting part 1163 when being connected with the casing 10, the liquid inlet and the liquid outlet of the handheld laser welding gun 100 are not visible from the outside, the overall appearance structure of the handheld laser welding gun 100 is simplified, and the joint of the cooling circuit is better protected.

In the above embodiment, the casing 10 is further provided with an air flow channel and an air inlet communicated with the air flow channel, and the air pipe penetrates through the second channel 62 and is communicated with the air inlet;

the gas enters the gas flow channel through the gas inlet and is sprayed out through the nozzle assembly.

The gas pipe is used to introduce gas into the case main body 11. Under this structure, the trachea also can accept in handle assembly 60, guarantees that the high temperature waste residue that splashes in the welding process can not cause the damage to the trachea.

The gas may be selected according to specific use requirements. In one embodiment, the gas may be an inert gas that enters the nozzle assembly 70 along the gas flow path and is ejected from the nozzle assembly 70 to act on the weld pool formed by the weld.

Further, the case main body 11 is provided with the above-described airflow passage. Further, an air inlet is provided at the connection portion 1163. Because the handle assembly covers the connecting part 1163 when being connected with the casing 10, the air inlet of the handheld laser welding gun 100 is invisible from the outside, the overall appearance structure of the handheld laser welding gun 100 is simplified, and the joint of the air flow channel is better protected.

Referring to fig. 2, the hand-held laser welding gun 100 further includes a protective mirror assembly 80, wherein the protective mirror assembly 80 is located between the housing main body 11 and the nozzle assembly 70, and the protective mirror assembly 80 can protect the structure in the housing 10 from spatter slag entering the housing 10 through the nozzle assembly 70 during welding.

The protection mirror assembly 80 comprises a protection mirror housing and a protection lens accommodated in the protection mirror housing, the protection mirror housing is connected with the housing main body 11 and the nozzle assembly 70, the laser beam 90 reflected by the first vibration lens 33 and the second vibration lens 53 is focused by the focusing mirror assembly 40, then is emitted by the nozzle assembly 70 after being focused by the protection lens, is focused on a part to be welded, and is welded on the part to be welded, the protection lens in the protection mirror assembly 80 can effectively block welding slag possibly entering the housing main body 11, and the laser beam 90 can be effectively transmitted.

In one embodiment, the x-axis, y-axis, and z-axis may be defined first, with the x-axis, y-axis, and z-axis being perpendicular to each other. The axis of the first galvanometer assembly 30 is parallel to the x-axis and the direction of incidence of the laser beam is parallel to the z-axis (i.e., the direction of extension of the handle assembly 60 is parallel to the z-axis). The axis of the first galvanometer assembly 30 is at an angle α from the projection of the axis of the second galvanometer assembly 50 on the plane defined by the x-axis and the z-axis. Specifically, the reflecting surface of the first galvanometer plate 33 forms an angle of 45 ° with a plane defined by the x-axis and the y-axis, and the incident laser beam propagates in a direction parallel to the y-axis after being reflected by the first galvanometer assembly 30.

In an embodiment of the present utility model, the placement angle of the second galvanometer assembly 50 can be understood as follows in conjunction with fig. 3: firstly, the axis of the second galvanometer assembly 50 is placed along the direction parallel to the z axis, the reflecting surface of the second galvanometer assembly 53 is parallel to the plane defined by the x axis and the z axis, the second galvanometer assembly 50 is rotated by taking the z axis as a rotation axis, so that the reflecting surface of the second galvanometer assembly 53 forms an included angle of 45 degrees with the plane defined by the x axis and the z axis (in this state, the laser beam propagating along the y axis direction is projected onto the second galvanometer assembly and can propagate along the direction parallel to the x axis after being reflected by the second galvanometer assembly), then, the second galvanometer assembly 50 is rotated along the plane defined by the x axis and the z axis, so that the included angle of the axis of the second galvanometer assembly 50 and the z axis is 20 degrees (namely, the included angle of the axis of the second galvanometer assembly 50 and the x axis is 70 degrees), the laser beam originally propagating along the x axis direction is deflected by 20 degrees, so that the outgoing laser beam forms an included angle of 110 degrees with the incident laser beam, in this state, which is limited by the embodiment of the utility model, the first galvanometer assembly can be rotated along the first galvanometer assembly, and the first galvanometer assembly can rotate along a certain track, a certain degree of the laser beam can be adjusted.

As can be seen from the above analysis, the included angle between the axis of the first galvanometer assembly 30 and the axis of the second galvanometer assembly 50 described in the technical solution of the present utility model is the included angle between the projection of the axis of the first galvanometer assembly 30 and the axis of the second galvanometer assembly 50 on the plane defined by the x-axis and the z-axis, and the included angle is α. It will be appreciated that the angle between the incident laser beam and the outgoing laser beam in the above description is the angle between the projections of the incident laser beam and the outgoing laser beam in the plane defined by the x-axis and the z-axis, and the angle is β.

It should be noted that the x-axis, y-axis, and z-axis defined above are all used to describe the relative positional relationship of the various components of the handheld laser welding gun and do not represent absolute positions.

The utility model also proposes a laser welding apparatus comprising a welding host and a handheld laser welding gun 100. The specific structure of the handheld laser welding gun 100 refers to the above embodiments, and since the present laser welding apparatus adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

In the above embodiment, the hand-held laser welding gun 100 may be connected to the welding host through an optical fiber, and other lines and pipelines may be connected between the welding host and the hand-held laser welding gun 100 as required. When the operator uses the hand-held laser welding gun 100, he only needs to hold the handle assembly 60, and can move the hand-held laser welding gun 100 to any required position as required to weld the part to be welded.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A handheld laser welding gun, the handheld laser welding gun comprising:

a housing connected to the handle assembly and the nozzle assembly;

the first vibrating mirror assembly is arranged in the shell; and

2. The hand-held laser welding torch of claim 1 wherein α = 70 °.

3. The hand-held laser welding gun of claim 1, wherein the axis of the first galvanometer assembly is perpendicular to the incident laser beam.

4. The hand-held laser welding gun of any one of claims 1-3, wherein the housing has a first mounting cavity, a second mounting cavity, and a reflective cavity, both of the first and second mounting cavities communicating with the reflective cavity;

5. The hand-held laser welding gun according to claim 4, wherein the housing comprises a housing body and a cover plate, the housing body having a first side wall surface and a second side wall surface which are disposed opposite to each other, and a peripheral wall surface which is circumferentially provided outside the first side wall surface and the second side wall surface, the peripheral wall surface connecting the first side wall surface and the second side wall surface;

6. The hand-held laser welding gun according to claim 5, wherein the peripheral wall surface has a first mounting portion, the first mounting cavity penetrates through the first mounting portion and an inner wall surface of the reflecting cavity, and the housing further includes a first mounting cover which is connected to the first mounting portion and covers the first mounting cavity.

7. The hand-held laser welding gun of claim 5, wherein the peripheral wall surface has a connecting portion to which the handle assembly is connected;

8. The hand-held laser welding gun according to claim 4, wherein the handle assembly is provided with a first channel and a second channel, the laser beam enters the reflecting cavity through the first channel, the shell is provided with a cooling flow channel and a liquid inlet and a liquid outlet which are communicated with the cooling flow channel, and a cooling pipeline penetrates through the second channel and is communicated with the liquid inlet and the liquid outlet.

9. The hand-held laser welding gun according to claim 8, wherein the casing is further provided with an air flow channel and an air inlet communicated with the air flow channel, and an air pipe penetrates through the second channel and is communicated with the air inlet;

10. A laser welding apparatus comprising a welding host and a hand-held laser welding gun according to any one of claims 1 to 9, the hand-held laser welding gun being connected to the welding host, the welding host transmitting energy to the hand-held laser welding gun.