CN219818388U

CN219818388U - Laser processing head

Info

Publication number: CN219818388U
Application number: CN202320100570.2U
Authority: CN
Inventors: 刘麒; 王子恒; 苏翠云; 王志伟; 魏康明
Original assignee: Shenzhen Hero Laser Equipment Co ltd
Current assignee: Shenzhen Hero Laser Equipment Co ltd
Priority date: 2023-02-02
Filing date: 2023-02-02
Publication date: 2023-10-13
Anticipated expiration: 2033-02-02

Abstract

The utility model discloses a laser processing head, which comprises a frame, a main shaft, a mechanical arm and a blowing component, wherein a laser emitting module is arranged on the frame; the main shaft is arranged on the frame, an inner cavity is formed in the main shaft, a light outlet is formed in one end, close to a workpiece to be welded, of the main shaft, a light inlet is formed in one end, far away from the workpiece to be welded, of the main shaft, the light inlet is arranged corresponding to the laser emitting module, a protective lens is arranged at the light inlet, and a blowing module is arranged in the inner cavity; the mechanical arm is rotatably arranged on the frame; the blowing assembly comprises an air source, an air pipe and a blowing head, the air source is arranged on the frame, the blowing head is arranged at the lower end of the mechanical arm, and the air pipe is arranged on the mechanical arm. According to the utility model, the air blowing module is arranged in the inner cavity of the main shaft to blow air to the light outlet, so that a small number of splash sparks entering the inner cavity are blown out, the splash sparks are further prevented from contacting the protective lens, the protective lens is prevented from being burnt out, the service life of the laser processing head is further prolonged, and the welding quality is ensured.

Description

Laser processing head

Technical Field

The utility model relates to the technical field of laser welding, in particular to a laser processing head.

Background

In the conventional welding method, laser welding is performed at a high speed, with a large depth and with a small deformation. Can be welded at room temperature or under special conditions, and the welding equipment is simple. The welding can be performed in vacuum, air and some gas environment, and can be performed through glass or a material transparent to light beams. Refractory materials such as titanium, quartz and the like can be welded, and the welding machine can weld different materials, has good effect and the like and is highly evaluated by a large number of welders.

During laser welding, especially thick plate welding, the laser power that uses is great, and the splash spark that produces during the welding is very big, and in current laser welding, shielding gas is coaxial and laser coaxial blows off, and the atmospheric pressure of shielding gas is lower, can't effectually blow away the splash spark in time, leads to splash spark touching protective lens, and then leads to protective lens damage. And the possibility of directly affecting the laser energy, or even directly damaging the entire weld head, once the protective lens is damaged.

Disclosure of Invention

The utility model mainly aims to provide a laser processing head, which aims to solve the problem that splash sparks are easy to damage protective lenses in the existing laser welding.

To achieve the above object, the present utility model provides a laser processing head comprising:

the laser emission module is arranged on the rack;

the main shaft is arranged on the frame, an inner cavity is formed in the main shaft, a light outlet is formed in one end, close to a workpiece to be welded, of the main shaft, a light inlet is formed in one end, far away from the workpiece to be welded, of the main shaft, the light inlet is arranged corresponding to the laser emission module, a protective lens is arranged at the light inlet, laser beams emitted by the laser emission module sequentially penetrate through the protective lens and the inner cavity and are emitted from the light outlet to the workpiece to be welded, and a blowing module is arranged in the inner cavity and is positioned below the protective lens and used for blowing towards the light outlet;

the mechanical arm extends downwards from top to bottom, and the upper end of the mechanical arm is rotatably arranged on the rack;

the air blowing assembly comprises an air source, an air pipe and an air blowing head, wherein the air source is arranged on the frame, the air blowing head is arranged at the lower end of the mechanical arm, the air pipe is arranged on the mechanical arm, the upper end of the air pipe is communicated with the air source, the lower end of the air pipe is communicated with the air blowing head, and an air blowing port of the air blowing head faces towards the workpiece to be welded and is used for blowing protective air to the workpiece to be welded.

Preferably, the mechanical arm comprises a first support arm and a second support arm, the upper end of the first support arm is rotatably mounted on the frame, the upper end of the second support arm is rotatably mounted on the lower end of the first support arm, and the blow head is rotatably mounted on the lower end of the second support arm.

Preferably, the upper end of the first support arm is mounted on the frame through a first universal joint.

Preferably, the upper end of the second support arm is hinged to the lower end of the first support arm through a hinge shaft.

Preferably, one end of the hinge shaft is provided with a rotating handle, the other end of the hinge shaft is provided with external threads, and the hinge shaft is matched with a nut to lock the first support arm and the second support arm.

Preferably, the blow head is mounted at the lower end of the second support arm by a second universal joint.

Preferably, the blowing head comprises a connecting part and a blowing part, the blowing part is communicated with the air pipe and used for blowing protective air to the workpiece to be welded, and the connecting part is arranged at the lower end of the second support arm through the second universal joint.

Preferably, the air blowing part is in a truncated cone shape, and the small end of the air blowing part forms the air blowing port.

Preferably, the main shaft includes from last light entering section, changeover portion and the light-emitting section that connects gradually down, the upper end of light entering section forms the light inlet and with the frame is connected, the lower extreme of light-emitting section forms the light outlet, just the size of light-emitting section is the convergent setting from last to lower.

Preferably, the height of the light outlet is higher than the height of the air blowing port.

According to the technical scheme, the protective gas is arranged on the mechanical arm beside the main shaft, the protective gas is blown from the side face, meanwhile, the protective lens is arranged at the uppermost part of the main shaft and far away from a workpiece to be welded, so that splashing sparks which can contact the protective lens are reduced, meanwhile, the air blowing module is arranged in the inner cavity of the main shaft to blow air to the light outlet, few splashing sparks entering the inner cavity are blown out, the splashing sparks are further prevented from contacting the protective lens, the protective lens is prevented from being burnt out, the service life of the laser processing head is prolonged, and the welding quality is guaranteed.

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 view of a laser processing head according to an embodiment of the present utility model;

fig. 2 is a schematic view of a part of a laser processing head according to an embodiment of the utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				1	Laser processing head	30	Mechanical arm
10	Rack	31	First support arm
				11	Laser emission module	32	Second support arm
12	First universal joint	33	Hinge shaft
				20	Main shaft	34	Rotary handle
21	Light outlet	40	Blowing assembly
				22	Light inlet	41	Blowing head
23	Protective lens	42	Connecting part
				24	Light entering section	43	Blowing part
25	Transition section	44	Second universal joint
				26	Light emitting section	50	Laser beam

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 technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the present embodiment, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. 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 the directional indications (such as up, down, left, right, front, and rear … …) in this embodiment are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model proposes a laser processing head 1.

Referring to fig. 1 and 2, a laser processing head 1 of the present embodiment includes a frame 10, a spindle 20, a mechanical arm 30, and an air blowing assembly 40, wherein a laser emitting module 11 is disposed on the frame 10; the main shaft 20 is arranged on the frame 10, the main shaft 20 is provided with an inner cavity, one end of the main shaft 20, which is close to a workpiece to be welded, is provided with a light outlet 21, one end of the main shaft 20, which is far away from the workpiece to be welded, is provided with a light inlet 22, the light inlet 22 is arranged corresponding to the laser emission module 11, a protective lens 23 is arranged at the light inlet 22, a laser beam 50 emitted by the laser emission module 11 sequentially passes through the protective lens 23 and the inner cavity and is emitted from the light outlet 21 to the workpiece to be welded, and a blowing module is arranged in the inner cavity, is positioned below the protective lens 23 and is used for blowing towards the light outlet 21; the mechanical arm 30 extends downwards from top to bottom, and the upper end of the mechanical arm 30 is rotatably arranged on the frame 10; the blowing assembly 40 comprises an air source, an air pipe and a blowing head 41, wherein the air source is arranged on the frame 10, the blowing head 41 is arranged at the lower end of the mechanical arm 30, the air pipe is arranged on the mechanical arm 30, the upper end of the air pipe is communicated with the air source, the lower end of the air pipe is communicated with the blowing head 41, and a blowing port of the blowing head 41 faces towards a workpiece to be welded and is used for blowing protective air to the workpiece to be welded.

The main shaft 20 sets up in the below of frame 10, and arm 30 sets up in the side of main shaft 20, and arm 30 rotatably installs in frame 10 in order to adjust the angle of blowing of blowhead 41, and the trachea can be installed in arm 30 inside, also can extend along arm 30 outer wall to fix on arm 30 outer wall, the module of blowing blows high-pressure air to light-emitting port 21, and high-pressure air can improve the ability of blocking to splash spark, prevents further that splash spark from getting into the inner chamber, and the gas-emitting port blows the argon gas towards the work piece that waits to weld as the shielding gas.

In the technical scheme of the utility model, the protective gas is arranged on the mechanical arm 30 beside the main shaft 20, the protective gas is blown from the side surface, meanwhile, the protective lens 23 is arranged at the uppermost part of the main shaft 20 and far away from a workpiece to be welded, so that splash sparks which can contact the protective lens 23 are reduced, meanwhile, the air blowing module is arranged in the inner cavity of the main shaft 20, the air is blown to the light outlet 21, a small number of splash sparks entering the inner cavity are blown out, the splash sparks are further prevented from contacting the protective lens 23, the protective lens 23 is prevented from being burnt out, the service life of the laser processing head 1 is prolonged, and the welding quality is ensured.

Further, the mechanical arm 30 includes a first support arm 31 and a second support arm 32, the upper end of the first support arm 31 is rotatably mounted on the frame 10, the upper end of the second support arm 32 is rotatably mounted on the lower end of the first support arm 31, and the air blowing assembly 40 is rotatably mounted on the lower end of the second support arm 32. The mechanical arm 30 is divided into the first support arm 31 and the second support arm 32, and the frame 10, the first support arm 31, the second support arm 32 and the blowing head 41 are rotatably connected with each other, so that the flexibility of the mechanical arm 30 and the blowing head 41 is improved, more use scenes can be adapted, and more use requirements can be met.

Further, the upper end of the first arm 31 is mounted on the frame 10 through the first universal joint 12. The first support arm 31 is rotationally connected with the frame 10 through the first universal joint 12, the structure is simple, the rotation angle is large, the transmission is smooth and stable, and the flexibility of the first support arm 31 is improved.

In one embodiment, the upper end of the second arm 32 is hinged to the lower end of the first arm 31 by a hinge shaft 33. The second support arm 32 is rotatably connected with the first support arm 31 through a hinge shaft 33, so that the second support arm 32 can swing along the vertical direction relative to the first support arm 31, thereby adjusting the position of the blow head 41 relative to a workpiece to be welded, and the hinge is convenient for adjusting and fixing the angle of the second support arm 32.

Further, one end of the hinge shaft 33 is provided with a rotating handle 34, the other end of the hinge shaft 33 is provided with external threads, and the hinge shaft 33 is engaged with nuts to lock the first arm 31 and the second arm 32. The rotation of the hinge shaft 33 is controlled by the rotating handle 34, and the first support arm 31 and the second support arm 32 are locked by the cooperation of the hinge shaft 33 and the nut, so that the air outlet can be fixed at a required position, and meanwhile, the contact area between a user and the hinge shaft 33 and the rotation force arm are increased by the rotating handle 34, so that the rotation of the hinge shaft 33 is more labor-saving.

In one embodiment, a blow head 41 is mounted to the lower end of the second arm 32 by a second universal joint 44. The blowing head 41 is rotatably connected with the second support arm 32 through the second universal joint 44, the structure is simple, the rotation angle is large, the transmission is stable and smooth, and the flexibility of the blowing head 41 is improved.

In one embodiment, the blowhead 41 includes a connection portion 42 and a blowing portion 43, the blowing portion 43 being in communication with the air pipe and for blowing the shielding gas to the workpieces to be welded, the connection portion 42 being mounted at the lower end of the second arm 32 by a second universal joint 44. The blowing part 43 is arranged at the bottom end of the connecting part 42, the blowing part 43 is communicated with the air pipe, the connecting part 42 is provided with a second universal joint 44, the connecting part 42 rotates to drive the blowing part 43 to rotate, the air pipe is prevented from falling off or winding in the rotating process, and the safety of the blowing head 41 is improved.

In one embodiment, the air blowing portion 43 has a truncated cone shape, and a small end of the air blowing portion 43 forms an air blowing port. The radius of the blowing part 43 is gradually reduced from the connecting part 42 to a direction away from the connecting part 42, so that the area of the blowing opening is reduced, and the pressure at the blowing opening is increased.

In an embodiment, the spindle 20 includes a light inlet section 24, a transition section 25 and a light outlet section 26 sequentially connected from top to bottom, the upper end of the light inlet section 24 forms a light inlet 22 and is connected with the frame 10, the lower end of the light outlet section 26 forms a light outlet 21, and the size of the light outlet section 26 is gradually reduced from top to bottom. The size of the light emitting section 26 is gradually reduced from top to bottom, so that the area of the compressed air blown out by the air blowing module at the light emitting port 21 is reduced, the pressure is further improved, splash sparks are prevented from entering the inner cavity, and the safety and the service life of the protective lens 23 are further improved.

In one embodiment, the height of the light outlet 21 is higher than the height of the air blowing opening. The height of the light outlet 21 is higher than that of the air blowing opening, and the number of splash sparks which can enter the inner cavity can be reduced by increasing the height of the light outlet 21 above the workpiece to be welded, so that the splash sparks are prevented from damaging the protective lens 23, and the safety and the service life of the protective lens 23 are improved.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims

1. A laser processing head, comprising:

the laser emission module is arranged on the rack;

2. The laser processing head of claim 1, wherein the robotic arm includes a first arm and a second arm, an upper end of the first arm being rotatably mounted to the frame, an upper end of the second arm being rotatably mounted to a lower end of the first arm, and the blow head being rotatably mounted to a lower end of the second arm.

3. The laser processing head of claim 2, wherein the upper end of the first arm is mounted to the frame by a first universal joint.

4. The laser processing head of claim 2 wherein the upper end of the second arm is hinged to the lower end of the first arm by a hinge.

5. The laser processing head of claim 4, wherein one end of the hinge shaft is provided with a rotating handle, the other end of the hinge shaft is provided with external threads, and the hinge shaft is engaged with a nut to lock the first arm and the second arm.

6. A laser processing head as claimed in claim 2 wherein said blowhead is mounted at the lower end of said second arm by a second universal joint.

7. A laser processing head as in claim 6 wherein said blowing head includes a connection portion and a blowing portion, said blowing portion being in communication with said air tube and adapted to blow a shielding gas to said workpiece to be welded, said connection portion being mounted at a lower end of said second arm by said second universal joint.

8. The laser processing head of claim 7, wherein the blowing portion has a truncated cone shape, and a small end of the blowing portion forms the blowing port.

9. The laser processing head of any one of claims 1 to 8, wherein the spindle comprises a light inlet section, a transition section and a light outlet section which are sequentially connected from top to bottom, the upper end of the light inlet section forms the light inlet and is connected with the frame, the lower end of the light outlet section forms the light outlet, and the size of the light outlet section is gradually reduced from top to bottom.

10. The laser processing head of any of claims 1-8, wherein the height of the light exit is greater than the height of the gas blow opening.