Universal head handheld laser welding gun

Abstract

The invention discloses a universal head handheld laser welding gun, wherein two mutually rotatably connected steering reflector components are arranged between a collimating mirror component and a focusing reflector component, a gun nozzle component is arranged outside a protective mirror component, one end of the gun nozzle component is connected to a protective air pipe, and the other end of the gun nozzle component is in an arc-shaped structure at the exit of a light emission channel, the steering reflector component comprises a right-angle shell provided with a light channel and a reflective member provided inside the light channel and reflecting the light path at a right angle, the right-angle shell is rotatably connected to the collimating mirror component and the focusing reflector component, a gun handle component is arranged on the focusing reflector component, and a protective component for protecting the light emission channel is arranged on the protective mirror component; the invention adds a steering mechanism and changes the structure of the gun nozzle component, increases the steering freedom at the cable connection, changes the blowing direction of the protective gas, prevents welding dust from entering the light emission channel and contaminating the protective mirror component, and avoids the breakage of optical fiber cables due to cable swing, thereby improving work efficiency.

Description

Technical Field

[0001] The invention relates to the field of laser welding, in particular to a universal head handheld laser welding gun. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the 1970s, it was mainly used for welding thin-walled materials and low-speed welding. The welding process is a heat conduction type, that is, the laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully applied to the precision welding of micro and small parts.

[0003] Existing handheld laser welding guns: Figure 1 , Figure 2 As shown in the instruction manual (see Figure 1 , 2 ), ① The gas protection channel and the light emission channel are one channel, and the welding dust splashes are easily reflected back into the channel, thereby damaging the protective mirror components; ② The optical fiber cable is fixed to the gun body. During practical use, the cable has little freedom of swing and poor flexibility, and the optical fiber cable is easily broken by a large swing. Summary of the invention

[0004] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art, by adding a steering mechanism and changing the structure of the nozzle component on the basis of the existing laser welding gun, increasing the steering freedom of the cable connection, changing the blowing direction of the shielding gas, preventing welding dust from entering the light channel and sticking to the protective mirror component and avoiding the breakage of the optical fiber cable due to the swing of the cable.

[0005] The technical solution of the present invention is: a universal head handheld laser welding gun, comprising an optical fiber cable component, a collimator component, a focusing reflector component, a protective mirror component and a gun nozzle component, wherein the optical fiber cable component, the collimator component, the focusing reflector component, the protective mirror component and the gun nozzle component are sequentially connected to form an existing conventional curved handheld laser welding gun, a rotating mechanism for realizing steering of the collimator component and the focusing reflector component is arranged between the collimator component and the focusing reflector component, the gun nozzle component is arranged on the outside of the protective mirror component, one end of the gun nozzle component is connected to a protective air pipe, and the other end of the gun nozzle component is in an arc-shaped structure at the outlet of the light emission channel.

[0006] Furthermore, the rotating mechanism is two steering reflector components which are rotatably connected to each other.

[0007] Furthermore, the steering reflector component includes a right-angle shell provided with a light channel and a reflector arranged inside the light channel and reflecting the light path at a right angle, and the right-angle shell is rotatably connected to the collimating mirror component and the focusing reflector component.

[0008] Furthermore, a gun handle component is arranged on the focusing reflector component, and a protective component for protecting the light emission channel is arranged on the protective mirror component.

[0009] The beneficial effects of the present invention are:

[0010] 1. The present invention increases the steering freedom of the cable connection by adding a steering mechanism and changing the structure of the nozzle component on the basis of the existing laser welding gun, changes the blowing direction of the shielding gas, prevents welding dust from entering the light channel and contaminating the shielding mirror component, and avoids the breakage of the optical fiber cable due to the swing of the cable, thereby improving work efficiency.

[0011] 2. The present invention arranges two steering reflector components that are rotatably connected to each other between the collimating mirror component and the focusing reflector component, so as to realize a two-degree-of-freedom rotational connection between the collimating mirror component and the focusing reflector component. Meanwhile, the steering reflector component is provided with a reflective member for reflecting the light path at right angles, so that the collimating mirror component and the focusing reflector component can rotate in multiple directions without affecting the light path conduction. In actual use, the focusing reflector component can be twisted at a large angle and in a complex weld state without the optical fiber cable having to swing greatly, so as to avoid damage to the optical fiber cable.

[0012] 3. The present invention arranges a gun nozzle component outside the focusing reflector component and changes its nozzle structure (in an arc-shaped structure) to change the blowing direction of the shielding gas, so that the shielding gas flows into a side-blowing state, so that the welding dust moves to one side and does not enter the light emission channel and cannot stick to the shielding mirror component to damage the shielding mirror component. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an existing handheld laser welding gun.

[0014] Figure 2 The figure is a schematic diagram of the structure of an existing handheld laser welding gun during welding.

[0015] Figure 3 This is a schematic diagram of the structure of this application.

[0016] Figure 4 This is a schematic diagram of the rotating structure of this application. DETAILED DESCRIPTION

[0017] Example: See Figure 1 , Figure 2 , Figure 3 and Figure 4, in the figure, 1-optical fiber cable component, 2-collimating mirror component, 3-focusing reflector component, 4-gun handle component, 5-protective mirror component, 6-protective component, 7-gun nozzle component, 8-protective air pipe, 9-steering reflector component; a-gun nozzle component, b-protective mirror component, c-light channel, d-protective gas, e-laser beam, f-welding dust, g-focusing reflector lens, h-collimating mirror component, i-optical fiber cable component.

[0018] A universal head handheld laser welding gun is provided with two mutually rotatably connected steering mirror components 9 between the collimating mirror component 2 and the focusing reflector component 3 in the existing laser welding gun, so as to increase the steering freedom at the cable connection, and change the structure of its gun nozzle component 7, so as to change the gas protection channel and the light emission channel from being one channel to respective independent channels, change the blowing direction of the shielding gas, prevent welding dust from entering the light emission channel and contaminating the protection mirror component, and avoid the breakage of the optical fiber cable due to the cable swing.

[0019] The present application is described in detail below in conjunction with embodiments and drawings.

[0020] The optical fiber cable component 1 is fixedly connected to the collimating mirror component 2, the collimating mirror component 2 is connected to the focusing reflector component 3 through a rotating mechanism (two degrees of freedom), the focusing reflector component 3 is fixedly connected to the protective mirror component 5, the focusing reflector component 3 is provided with a gun handle component 4, and the protective mirror component 5 is provided with a protective component 6 for protecting the light emission channel.

[0021] The rotating mechanism is two steering reflector components 9 that are rotatably connected to each other. The steering reflector component 9 includes a right-angle shell with a light channel and a reflector arranged inside the light channel and reflecting the light path at right angles. The right-angle shell is rotatably connected to the collimating mirror component 2 and the focusing reflector component 3.

[0022] The reflector is a right-angle reflector, which is a standard optical accessory and reflects the laser to change the propagation path of the laser.

[0023] When in use, people hold the gun handle component 4, and according to the state of the weld, the focusing reflector component 3 is rotated with two degrees of freedom through the two steering reflector components 9, so that it can weld welds in different states. The protective gas sprayed from the gun nozzle component 7 is in a side-blowing state under the action of the arc structure, so that the welding dust moves to one side and does not enter the light emission channel and cannot stick to the protective mirror component to damage the protective mirror component.

[0024] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A universal head handheld laser welding gun, comprising an optical fiber cable component, a collimator component, a focusing reflector component, a protective mirror component and a gun nozzle component, wherein the optical fiber cable component, the collimator component, the focusing reflector component, the protective mirror component and the gun nozzle component are sequentially connected to form an existing conventional curved handheld laser welding gun, characterized in that: A rotating mechanism is provided between the collimating mirror component and the focusing reflector component to realize the steering of the two components. The gun nozzle component is provided outside the protective mirror component. One end of the gun nozzle component is connected to the protective air pipe, and the other end of the gun nozzle component is in an arc-shaped structure at the exit of the light emission channel. The rotating mechanism is two steering reflector components which are rotatably connected to each other; a gun handle component is arranged on the focusing reflector component, and a protective component for protecting the light emission channel is arranged on the protective mirror component.

2. The universal head handheld laser welding gun according to claim 1 is characterized in that: The steering reflector component comprises a right-angle shell provided with a light channel and a reflector arranged inside the light channel and reflecting the light path at a right angle. The right-angle shell is rotatably connected with the collimating mirror component and the focusing reflector component.

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