Handheld laser processing gun and processing head thereof

Abstract

The utility model discloses a handheld laser processing gun and a processing head thereof, the handheld laser processing gun comprises a handheld gun body and a laser emitting gun barrel, the laser emitting gun barrel is connected with the handheld gun body, the processing head comprises a first pipe nozzle and a second pipe nozzle, the tail end of the first pipe nozzle is used for being connected with the laser emitting gun barrel, and the tail end of the second pipe nozzle is used for being connected with the laser emitting gun barrel. The handheld laser processing gun further comprises at least one of a gas spraying pipe and a welding wire conveying pipe, the tail end of the second pipe nozzle is used for being connected with at least one of the gas spraying pipe and the welding wire conveying pipe, and the gas spraying pipe is connected with the gas spraying pipe. The front end of the first pipe nozzle and the front end of the second pipe nozzle are gradually close to each other in the direction away from the laser emitting gun barrel. According to the scheme, the problem that each nozzle is inconvenient to disassemble and assemble can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser processing equipment design, and in particular relates to a handheld laser processing gun and a processing head thereof. Background Art

[0002] Handheld laser processing guns are popular among users due to their advantages such as light weight and convenient and flexible handheld operation. The handheld laser processing gun in the related art is also equipped with a jet tube, which will spray protective gas (such as inert gas) to the processing position during laser processing to form an atmosphere of isolating air. In order to facilitate the emission, the laser output gun barrel is detachably equipped with a laser nozzle, and the jet tube is detachably equipped with a jet nozzle. Considering that the handheld laser welding gun needs to be held in one hand, in the handheld laser processing gun involved in the related art, the laser nozzle and the jet nozzle also need to be separately installed on the gun body or the laser output gun barrel of the handheld laser processing gun.

[0003] However, the laser nozzle and the air jet nozzle are consumables and need to be replaced after a period of use, which requires the operator to replace them one by one. Due to the large number of them, disassembly and assembly will be time-consuming and laborious, and inconvenient, which causes a bad user experience for customers. Utility Model Content

[0004] The utility model discloses a handheld laser welding gun and a processing head thereof, so as to solve the problem that each nozzle of the handheld laser processing gun involved in the related art is inconvenient to be disassembled and assembled.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] In the first aspect, an embodiment of the utility model discloses a processing head of a handheld laser processing gun, wherein the handheld laser processing gun comprises a handheld gun body and a laser output barrel, wherein the laser output barrel is connected to the handheld gun body, and the processing head comprises a first nozzle and a second nozzle, wherein the tail end of the first nozzle is used to be connected to the laser output barrel so that the laser emitted from the laser output barrel is emitted from the first nozzle, and the second nozzle is an integrated structure with the first nozzle, and the handheld laser processing gun also comprises at least one of an air jet tube and a welding wire feeding tube, wherein the tail end of the second nozzle is used to be connected to at least one of the air jet tube and the welding wire feeding tube, and the front end of the first nozzle and the front end of the second nozzle gradually approach each other in a direction away from the laser output barrel.

[0007] In the second aspect, an embodiment of the utility model discloses a handheld laser processing gun, comprising a handheld gun body, a laser output barrel and the processing head described in the first aspect, wherein the laser output barrel is connected to the handheld gun body, and the tail end of the first nozzle is connected to the laser output barrel so that the laser beam emitted by the laser output barrel is emitted from the first nozzle, and the handheld laser processing gun also includes at least one of an air jet tube and a welding wire feeding tube, and the tail end of the second nozzle is connected to at least one of the air jet tube and the welding wire feeding tube.

[0008] The technical solution adopted by the utility model can achieve the following technical effects:

[0009] The processing head of the handheld laser processing gun disclosed in the embodiment of the utility model realizes modularization of the processing head by designing the second nozzle and the first nozzle into an integrated structure, thereby avoiding the need for assembly between the first nozzle and the second nozzle, so that the first nozzle and the second nozzle can be installed together only by connecting the tail end of the first nozzle to the laser output barrel. Similarly, the first nozzle and the second nozzle can be disassembled together only by disassembling the first nozzle. Compared with the second nozzle and the first nozzle requiring separate assembly operations to be installed on the laser output barrel, the processing head of this structure can reduce the disassembly and assembly operations between the laser output barrel, thereby making it easier to disassemble and assemble the processing head, and at the same time, it can also improve the disassembly and assembly efficiency.

[0010] At the same time, this method of integrating the second nozzle and the first nozzle into a modular structure allows all nozzles to be disassembled and assembled from the laser emission barrel only through the first nozzle, so that the second nozzle no longer needs to be provided with a structure for connecting with the laser emission barrel, which is conducive to simplifying the structure and reducing consumables, so that the processing head disclosed in the embodiment of the utility model has the advantages of simple structure, small size and weight, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the first structure of the processing head of the handheld laser processing gun disclosed in the embodiment of the utility model;

[0012] Figure 2 This is a second structural schematic diagram of a processing head of a handheld laser processing gun disclosed in an embodiment of the utility model;

[0013] Figure 3 This is a third structural schematic diagram of the processing head of the handheld laser processing gun disclosed in the embodiment of the utility model;

[0014] Figure 4 This is a fourth structural schematic diagram of the processing head of the handheld laser processing gun disclosed in the embodiment of the utility model;

[0015] Figure 5 It is a structural schematic diagram of a handheld laser processing gun disclosed in an embodiment of the utility model;

[0016] Figure 6 It is a cross-sectional view of a handheld laser processing gun disclosed in an embodiment of the utility model.

[0017] Description of reference numerals:

[0018] 10-handheld gun body, 20-laser output gun barrel, 30-jet nozzle, 40-wire delivery tube,

[0019] 50-processing head, 51-first nozzle, 511-nozzle channel, 501-equal diameter sub-channel, 502-variable diameter sub-channel, 52-second nozzle, 521-anti-slip structure, 53-third nozzle, 531-nozzle channel, 503-first equal diameter hole, 504-conical hole, 505-second equal diameter hole, 54-first connecting plate rib, 55-second connecting plate rib, 553-mounting hole, 56-diverter channel, 57-support protrusion,

[0020] 60- gathering part,

[0021] 71 - laser generator, 72 - laser adjustment component, 721 - optical lens, 722 - reflector, 723 - protective lens. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] The technical solutions disclosed in various embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0024] Please refer to Figures 1 to 6 The embodiment of the utility model discloses a processing head 50 of a handheld laser processing gun, and the disclosed processing head 50 is a part of the handheld laser processing gun. The handheld laser processing gun disclosed in the embodiment of the utility model can be a handheld laser welding gun, a handheld laser engraving gun, or a handheld laser cutting gun. The embodiment of the utility model does not limit the specific type of the handheld laser processing gun.

[0025] The handheld laser processing gun according to the embodiment of the present invention includes not only a processing head 50 , but also a handheld gun body 10 , a laser emission gun barrel 20 , and at least one of an air injection pipe 30 and a welding wire feeding pipe 40 .

[0026] The handheld gun body 10 is the main structure of the handheld laser processing gun. The handheld gun body 10 is not only used for the operator to hold it when performing laser processing (such as welding, engraving, cutting, etc.), but also used to accommodate the laser generator 71 and some other auxiliary components (such as the laser adjustment part 72).

[0027] The laser output barrel 20 is connected to the handheld gun body 10. Specifically, the laser output barrel 20 and the handheld gun body 10 can be connected in an inseparable manner or in a detachable manner, which is not limited in the embodiment of the utility model. The laser output barrel 20 is used to emit a laser beam during laser processing. In the specific laser processing process, the laser generator 71 in the handheld gun body 10 generates a laser, and the generated laser is directly emitted into the laser output barrel 20 or is emitted into the laser output barrel 20 after being adjusted by the laser adjustment member 72, and finally continues to be emitted through the laser output barrel 20.

[0028] As described above, the handheld laser processing gun involved in the embodiment of the utility model may include at least one of the air jet tube 30 and the welding wire feeding tube 40. In one embodiment, the handheld laser processing gun involved in the embodiment of the utility model may include the air jet tube 30 but not the welding wire feeding tube 40, and the handheld laser processing gun involved in this structure may be a handheld laser engraving gun, a handheld laser cutting gun, etc. In another embodiment, the handheld laser processing gun involved in the embodiment of the utility model may include the welding wire feeding tube 40 but not the air jet tube 30, and the handheld laser processing gun involved in this structure may be a handheld laser welding gun.

[0029] In order to improve the welding quality during the laser welding process, in another embodiment, the handheld laser processing gun disclosed in the embodiment of the utility model can include an air jet tube 30 and a welding wire feeding tube 40 at the same time. The handheld laser processing gun of this structure is a handheld laser welding gun. The air jet tube 30 can provide a protective gas during the laser welding process, thereby avoiding oxidation at the welding point and causing the problem of poor welding quality.

[0030] Specifically, the jet pipe 30 is used to be connected to the gas source, and the protective gas in the gas source is output through the jet pipe 30. The protective gas in the embodiment of the utility model can be an inert gas, such as nitrogen. It should be noted that the embodiment of the utility model does not limit the specific type of protective gas. The protective gas can provide protection during the laser processing, thereby avoiding the problem of oxidation that is easy to occur when the processed part is at high temperature.

[0031] The welding wire conveying tube 40 involved in the embodiment of the utility model is used to convey welding wire. In the case where the laser processing is laser welding, laser welding requires continuous conveying of welding wire. In the specific welding process, the welding wire is conveyed through the welding wire conveying tube 40.

[0032] The processing head 50 disclosed in the embodiment of the utility model comprises a first nozzle 51 and a second nozzle 52 .

[0033] The tail end of the first nozzle 51 is used to be connected to the laser output barrel 20 , and the laser beam emitted from the laser output barrel 20 will be emitted through the first nozzle 51 , thereby reaching the workpiece to provide the high temperature required for processing.

[0034] The second nozzle 52 is an integrated structure with the first nozzle 51, so that the processing head 50 forms a modular structure, so that there is no need to assemble the first nozzle 51 and the second nozzle 52. The tail end of the second nozzle 52 is used to connect to at least one of the gas injection pipe 30 and the welding wire feeding pipe 40.

[0035] In an optional solution, the tail end of the second nozzle 52 is only used to be connected to the air jet 30. In this case, the second nozzle 52 acts as an air jet nozzle, and the shielding gas delivered by the air jet 30 will enter the air jet nozzle and be ejected through the air jet nozzle, so that the shielding gas plays the function of isolation protection. In another optional solution, the tail end of the second nozzle 52 is only used to be connected to the welding wire delivery pipe 40. In this case, the second nozzle 52 acts as a wire outlet nozzle, and the welding wire delivered by the welding wire delivery pipe 40 will pass through the wire outlet nozzle and finally be delivered to the workpiece to participate in welding. In another optional solution, the tail end of the second nozzle 52 is connected to the air jet 30 and the welding wire delivery pipe 40 at the same time. In this case, the second nozzle 52 acts as an air jet nozzle and a wire outlet nozzle at the same time.

[0036] In the embodiment of the utility model, the front end of the first nozzle 51 and the front end of the second nozzle 52 gradually approach each other in the direction away from the laser emission barrel 20, so that the laser beam emitted by the first nozzle 51 can better cooperate with the shielding gas and / or welding wire ejected by the second nozzle 52 at the workpiece to achieve the purpose of completing the processing. Specifically, the first nozzle 51 and the second nozzle 52 can be in the same conical space.

[0037] It should be noted that the front end of the first nozzle 51, the front end of the second nozzle 52, and the front end of the third nozzle 53 mentioned later are located at the front end of the processing head 50, that is, the end of the corresponding components facing away from the handheld gun body 10. On the contrary, the rear end of the first nozzle 51, the rear end of the second nozzle 52, and the rear end of the third nozzle 53 mentioned later are all located at the rear end of the processing head 50, that is, the end of the corresponding components facing the handheld gun body 10.

[0038] The processing head 50 of the handheld laser processing gun disclosed in the embodiment of the utility model realizes modularization of the processing head 50 by designing the second nozzle 52 and the first nozzle 51 into an integrated structure, thereby avoiding the need for further assembly between the first nozzle 51 and the second nozzle 52, so that the first nozzle 51 and the second nozzle 52 can be installed together only by connecting the tail end of the first nozzle 51 with the laser emission barrel 20. Similarly, the first nozzle 51 and the second nozzle 52 can be disassembled together only by disassembling the first nozzle 51. Compared with the second nozzle 52 and the first nozzle 51, which need to be assembled separately to be installed on the laser emission barrel 20, the processing head 50 with this structure can reduce the disassembly and assembly operations between the laser emission barrel 20, thereby making it easier to disassemble and assemble the processing head 50, and at the same time, it can also improve the disassembly and assembly efficiency.

[0039] At the same time, this method of integrating the second nozzle 52 and the first nozzle 51 into a modular structure can realize the disassembly and assembly of all nozzles and the laser emission barrel 20 only through the first nozzle 51, so that the second nozzle 52 does not need to be provided with a structure for connecting with the laser emission barrel 20, which is conducive to simplifying the structure and reducing consumables, so that the processing head 50 disclosed in the embodiment of the utility model has the advantages of simple structure, small volume and weight, etc.

[0040] As described above, the handheld laser processing gun can include the air jet 30 and the welding wire feeding tube 40 at the same time, and accordingly, the tail end of the second nozzle 52 can be used to be connected to the air jet 30 and the welding wire feeding tube 40 at the same time. In this case, the shielding gas ejected from the air jet 30 and the welding wire fed by the welding wire feeding tube 40 are both output through the second nozzle 52. In order to avoid mutual influence during the output process, in a further optional scheme, the processing head 50 can also include a third nozzle 53, and the third nozzle 53 is fixedly connected to at least one of the second nozzle 52 and the first nozzle 51. The tail end of the second nozzle 52 can be used to be connected to one of the air jet 30 and the welding wire feeding tube 40, and the tail end of the third nozzle 53 can be used to be connected to the other of the air jet 30 and the welding wire feeding tube 40. In this case, the second nozzle 52 can serve as one of the air jet nozzle and the wire outlet nozzle, and the third nozzle 53 can serve as the other of the air jet nozzle and the wire outlet nozzle. The processing head 50 of this structure is provided with a third nozzle 53, so that the third nozzle 53 and the second nozzle 52 cooperate with each other, so as to respectively connect the gas injection pipe 30 and the welding wire feeding pipe 40, thereby avoiding mutual influence.

[0041] In order to better achieve the cooperation at the workpiece, the front ends of the first nozzle 51 , the second nozzle 52 and the third nozzle 53 gradually approach each other in the direction away from the laser emitting barrel 20 .

[0042] For better coordination, in the embodiment of the present invention, the penetration direction of the second nozzle 52 may intersect with the penetration direction of the first nozzle 51 , and similarly, the penetration direction of the first nozzle 51 may intersect with the penetration direction of the third nozzle 53 .

[0043] In the case where the processing head 50 disclosed in the embodiment of the utility model includes the third nozzle 53, the second nozzle 52 and the third nozzle 53 can be both arranged on the same side of the first nozzle 51, and specifically, the second nozzle 52 can be located between the first nozzle 51 and the third nozzle 53. Alternatively, the third nozzle 53 is located between the first nozzle 51 and the second nozzle 52.

[0044] Of course, the second nozzle 52 and the third nozzle 53 may also be disposed on different sides of the first nozzle 51, for example, the second nozzle 52 and the third nozzle 53 are disposed on two adjacent sides or two opposite sides of the first nozzle 51. Optionally, the first nozzle 51 is located between the second nozzle 52 and the third nozzle 53.

[0045] Taking into account a more convenient restraint of the air jet pipe 30 and the welding wire feeding pipe 40, in a more optional solution, the second nozzle 52 and the third nozzle 53 can be arranged on the same side of the first nozzle 51, so that the air jet pipe 30 and the welding wire feeding pipe 40 can be located on the same side of the laser output gun barrel 20, so as to uniformly restrain and manage the pipelines.

[0046] Furthermore, the handheld laser processing gun involved in the embodiment of the utility model may also include a gathering portion 60, which is located between the gripping portion of the handheld gun body 10 and the processing head 50. The gathering portion 60 may be provided with a gathering hole, and at least one of the air injection pipe 30 and the welding wire feeding pipe 40 may be connected to the processing head 50 and pass through the gathering hole, thereby being constrained by the gathering portion 60, and ultimately avoiding the air injection pipe 30 and the welding wire feeding pipe 40 from drooping in disorder and affecting the processing.

[0047] In an optional embodiment, when the second nozzle 52 is located between the first nozzle 51 and the third nozzle 53, the angle between the through direction of the second nozzle 52 and the through direction of the first nozzle 51 may be 15-30°, and the angle between the through direction of the third nozzle 53 and the through direction of the first nozzle 51 may be 40-50°. Specifically, the angle between the through direction of the second nozzle 52 and the through direction of the first nozzle 51 may be 25°, 15°, or 30°. The angle between the through direction of the third nozzle 53 and the through direction of the first nozzle 51 may be 40°, 45°, or 50°.

[0048] In another optional embodiment, when the third nozzle 53 is located between the first nozzle 51 and the second nozzle 52, the angle between the through direction of the third nozzle 53 and the through direction of the first nozzle 51 may be 15-30°, and the angle between the through direction of the second nozzle 52 and the through direction of the first nozzle 51 may be 40-50°. Specifically, the angle between the through direction of the third nozzle 53 and the through direction of the first nozzle 51 may be 15°, 25°, or 30°. The angle between the through direction of the second nozzle 52 and the through direction of the first nozzle 51 is 40°, 45°, or 50°.

[0049] In order to further reduce the assembly operation of the processing head 50, the third nozzle 53, the second nozzle 52 and the first nozzle 51 can be an integrated structure. This structure can make the processing head 50 further modularized, thereby avoiding the need to assemble the third nozzle 53 with the first nozzle 51 or the second nozzle 52, so that the first nozzle 51, the second nozzle 52 and the third nozzle 53 can be installed together only by connecting the tail end of the first nozzle 51 with the laser emission barrel 20. Similarly, the first nozzle 51, the second nozzle 52 and the third nozzle 53 can be disassembled together only by disassembling the first nozzle 51. Compared with the second nozzle 52, the first nozzle 51 and the third nozzle 53, which need to be assembled separately to be installed on the laser emission barrel 20, the processing head 50 with this structure can further reduce the disassembly and assembly operation between the laser emission barrel 20, thereby making it more convenient to disassemble and assemble the processing head 50, and at the same time, it can further improve the disassembly and assembly efficiency. Of course, this structure makes it unnecessary for the third nozzle 53 to be provided with a structure for connecting with the laser emission barrel 20, which is conducive to simplifying the structure and reducing consumables.

[0050] As described above, the handheld laser processing gun involved in the embodiment of the utility model may not include the welding wire feeding tube 40, or may include the welding wire feeding tube 40. In the case of including the welding wire feeding tube 40, the handheld laser processing gun may be a handheld laser welding gun. In the case of not including the welding wire feeding tube 40, the handheld laser processing gun may be a handheld laser engraving gun, or may be a processing device with other functions such as a handheld laser cutting gun. Based on this, the processing head 50 disclosed in the embodiment of the utility model may include a third nozzle 53, and when the tail end of the third nozzle 53 is used to connect with the welding wire feeding tube 40, the third nozzle 53 may be detachably mounted on the integral structure formed by the first nozzle 51 or the second nozzle 52. At this time, the third nozzle 53 can be detachable, so that the user can selectively install the third nozzle 53 according to the purpose of use of the handheld laser processing gun. In other words, when the user intends to use the handheld laser processing gun as a handheld laser welding gun, the third nozzle 53 can be installed on the integral structure formed by the first nozzle 51 and the second nozzle 52. When the user does not intend to use the handheld laser processing gun as a handheld laser welding gun, the welding wire feeding tube 40 is not needed, and further, the third nozzle 53 is not needed. This structure can be flexibly selected, so that the user can remove the third nozzle 53 separately when it is not needed, thereby avoiding the problem of heavy hand-held load caused by the redundant third nozzle 53.

[0051] As described above, the first nozzle 51 and the second nozzle 52 are an integrated structure. Specifically, the first nozzle 51 and the second nozzle 52 can be directly connected and are an integrated structure. Of course, in other embodiments, the processing head 50 disclosed in the embodiment of the utility model may also include a first connecting plate rib 54, and the first nozzle 51 and the second nozzle 52 can be connected through the first connecting plate rib 54, and the three are an integrated structure. In this case, the first connecting plate rib 54 serves as a connector, which is more conducive to designing the angle between the through direction of the first nozzle 51 and the through direction of the second nozzle 52. At the same time, the first connecting plate rib 54 is a plate-like structure, which can improve the structural strength of the processing head 50.

[0052] In the case where the processing head 50 includes the third nozzle 53, and the second nozzle 52 and the third nozzle 53 are both arranged on the same side of the first nozzle 51, the second nozzle 52 can be located between the third nozzle 53 and the first nozzle 51. Similarly, the processing head 50 disclosed in the embodiment of the utility model can also include a second connecting plate rib 55, and the second nozzle 52 can be connected to the third nozzle 53 through the second connecting plate rib 55. The second connecting plate rib 55 is a plate-like structure with a large area, which is conducive to improving the structural strength of the processing head 50. Of course, the second connecting plate rib 55, as a connecting piece, is more conducive to designing the angle between the through direction of the second nozzle 52 and the through direction of the third nozzle 53. The second nozzle 52 can be directly connected to the third nozzle 53, and the two are an integrated structure. The second nozzle 52 can also be connected to the third nozzle 53 through the second connecting plate rib 55, and the three are an integrated structure.

[0053] In the embodiment where the processing head 50 includes the third nozzle 53, and the third nozzle 53 is detachably mounted on the integrated structure formed by the first nozzle 51 and the second nozzle 52, the second connecting plate rib 55 may be provided with a mounting hole 553, and the third nozzle 53 may be detachably mounted in the mounting hole 553. Optionally, the mounting hole 553 may be a threaded hole, and the third nozzle 53 may be a threaded columnar member, and the third nozzle 53 may be fixed in the mounting hole 553 by threaded engagement. In this case, the second connecting plate rib 55 may also provide a mounting position for the third nozzle 53.

[0054] In the specific working process, the laser beam will generate heat, which will in turn heat the components it passes through. In order to ensure that the shape of the processing head 50 is stable, the processing head 50 disclosed in the embodiment of the utility model can be made of a heat-resistant material. In the case where the processing head 50 includes at least one of the first connecting plate rib 54 and the second connecting plate rib 55, at least one of the first connecting plate rib 54 and the second connecting plate rib 55 is made of a heat-resistant material (such as a metal such as stainless steel). There are many types of heat-resistant materials, and the embodiment of the utility model does not limit the type of heat-resistant material. The first connecting plate rib 54 and the second connecting plate rib 55 can also be made of a heat-insulating material to reduce the heat conduction efficiency on the processing head 50.

[0055] The end face of the processing head 50 facing away from the laser emitting barrel 20 disclosed in the embodiment of the utility model can be an inclined end face inclined relative to the axis of the laser emitting barrel 20. This inclined end face makes it easier for the emitted laser and the jet and / or welding wire to cooperate with the workpiece. Optionally, the angle between the end face of the processing head 50 facing away from the laser emitting barrel 20 and the axis of the laser emitting barrel 20 can be an obtuse angle, for example, 120°. Of course, the embodiment of the utility model does not limit the size of the specific angle between the end face of the processing head 50 facing away from the laser emitting barrel 20 and the axis of the laser emitting barrel 20.

[0056] As described above, the disassembly and assembly of the first nozzle 51 and the laser emitting barrel 20 can realize the disassembly and assembly of the entire processing head 50. There are many ways to connect the first nozzle 51 and the laser emitting barrel 20. Specifically, the tail end of the first nozzle 51 can be provided with a detachable connection structure for plug-in connection, threaded connection or clip-on connection with the laser emitting barrel 20. In the case of plug-in connection, the detachable connection structure can be a plug-in protrusion or a plug-in depression. In the case of threaded connection, the detachable connection structure can be a threaded hole. In the case of clip-on connection, the detachable connection structure can be a slot or a clip-on protrusion. The embodiment of the utility model does not limit the specific shape of the detachable connection structure.

[0057] In the embodiment of the utility model, the nozzle channel of the first nozzle 51, the nozzle channel of the second nozzle 52 and the nozzle channel of the third nozzle 53 can be independent of each other and not connected to each other, so as to avoid mutual influence. In other embodiments, the nozzle channels of at least two of the first nozzle 51, the second nozzle 52 and the third nozzle 53 partially converge in the direction close to the front end of the processing head 50, and share a nozzle opening at the end surface of the front end of the processing head 50.

[0058] In the case where the handheld laser processing gun of the present utility model embodiment further includes a welding wire delivery tube 40, and the tail end of the third nozzle 53 is used to connect to the welding wire delivery tube 40, the third nozzle 53 can be one, and the nozzle channel of the third nozzle 53 is used to deliver multiple welding wires, thereby improving the delivery efficiency. Of course, in order to avoid interference between welding wires when delivering multiple welding wires, in other embodiments, the third nozzle 53 can also be multiple, and the nozzle channel of each third nozzle 53 is only used to deliver one welding wire, thereby realizing the independent delivery of each welding wire during multi-wire welding.

[0059] In the embodiment of the utility model, the nozzle channel 511 of the first nozzle 51 may include a constant diameter sub-channel 501 and a variable diameter sub-channel 502, wherein the constant diameter sub-channel 501 is used to connect the laser emission barrel 20 with the variable diameter sub-channel 502, and the diameter of the variable diameter sub-channel 502 decreases in the direction away from the constant diameter sub-channel 501. In this structure, the variable diameter sub-channel 502 can make the emitted laser beam gradually change from large to small, thereby improving the accuracy of laser beam heating, which is conducive to precise welding. Of course, in other embodiments, the diameter of the nozzle channel 511 can also be equal everywhere.

[0060] In order to facilitate the connection, the tail end of the second nozzle 52 may be provided with an anti-slip structure 521, and the anti-slip structure 521 is used to prevent the nozzle 30 from slipping off. Specifically, the anti-slip structure 521 is an anti-slip protrusion, which can be limitedly matched with the connecting end of the nozzle 30 in the direction of separation between the two, thereby preventing the nozzle 30 from falling off. Similarly, the tail end of the third nozzle 53 may also be provided with an anti-slip structure, and the anti-slip structure at the tail end of the third nozzle 53 can be connected to the welding wire feeding tube 40 for anti-slipping. The embodiment of the utility model does not limit the specific structure of the anti-slip structure.

[0061] In order to achieve accurate delivery of welding wire, the nozzle channel 531 of the third nozzle 53 may include a first equal-diameter hole 503, a tapered hole 504, and a second equal-diameter hole 505. The first equal-diameter hole 503, the tapered hole 504, and the second equal-diameter hole 505 are connected in sequence and can be coaxially arranged. The first equal-diameter hole 503 connects the large end of the tapered hole 504 and is equal to the diameter of the large end of the tapered hole 504, and the second equal-diameter hole 505 connects the small end of the tapered hole 504 and is equal to the diameter of the small end of the tapered hole 504. The nozzle channel 531 of this structure is designed with a section with a smaller diameter at the position where the welding wire is output, thereby ensuring that the output position of the welding wire is more accurate. Of course, in other embodiments, the diameter of the nozzle channel 531 can also be equal everywhere.

[0062] In the embodiment of the utility model, the nozzle opening of the second nozzle 52 can be a mesh nozzle, an annular nozzle, an arc nozzle, or arranged around the nozzle opening of the first nozzle 51. The nozzle opening of the first nozzle 51 can be a racetrack, a circle, or an ellipse. Of course, the nozzle opening of the first nozzle 51 can also adopt the above shapes, and the embodiment of the utility model does not limit the specific shapes of the nozzle openings of the first nozzle 51, the second nozzle 52, and the third nozzle 53.

[0063] In the specific use process, when the user holds the handheld laser processing gun disclosed in the embodiment of the utility model, it needs to take a break due to its heavy weight, which will affect the processing progress. Based on this, the processing head 50 disclosed in the embodiment of the utility model can also include a support protrusion 57, and the support protrusion 57 is arranged at the edge of the bottom of the processing head 50. The support protrusion 57 can be an integrated structure with other parts of the processing head 50. The support protrusion 57 can play the role of auxiliary support. When the user holds the handheld laser processing gun disclosed in the embodiment of the utility model, the support protrusion 57 can be supported on the ground, a shelf, etc., so that the user does not need to hold it with full load, which is ultimately conducive to reducing the user's use burden.

[0064] As mentioned above, during the corresponding processing using a laser beam, the laser beam will generate heat and thus cause high temperature. Accordingly, the temperature of the first nozzle 51 will be high, and the user may be easily scalded if he is not careful. Based on this, in a more preferred solution, the tail end of the second nozzle 52 is used to connect with the jet pipe 30, and the processing head 50 may be provided with a shunt channel 56, and the shunt channel 56 may at least partially be arranged around the nozzle channel 531 of the first nozzle 51 to cool the first nozzle 51. In this case, a part of the protective gas delivered by the jet pipe 30 can also cool the first nozzle 51, thereby avoiding the safety hazard caused by the excessive temperature of the first nozzle 51.

[0065] Based on the processing head 50 disclosed in the embodiment of the utility model, the embodiment of the utility model discloses a handheld laser processing gun. The disclosed handheld laser processing gun may include a handheld gun body 10, a laser output barrel 20 and the processing head 50 described in the above embodiment. The laser output barrel 20 is connected to the handheld gun body 10, and the tail end of the first nozzle 51 is connected to the laser output barrel 20 so that the laser beam emitted by the laser output barrel 20 is emitted from the first nozzle 51.

[0066] The handheld laser processing gun disclosed in the embodiment of the utility model may further include at least one of an air jet tube 30 and a welding wire feeding tube 40 , and the tail end of the second nozzle 52 is connected to at least one of the air jet tube 30 and the welding wire feeding tube 40 .

[0067] In the case where the handheld laser processing gun includes a welding wire delivery tube 40, the handheld laser processing gun is a handheld laser welding gun, and can perform laser welding processing. In the specific welding process, welding slag is easily generated. In the handheld laser processing gun disclosed in the embodiment of the utility model, the protective gas sprayed by the gas injection tube 30 is also used to blow away the welding slag on the workpiece to alleviate this part of the welding slag from passing through the first nozzle 51 and the laser emission gun barrel 20 and entering the handheld gun body 10. Alleviating the welding slag from entering the handheld gun body 10 can prevent the welding slag from damaging the valuable components in the handheld gun body 10.

[0068] In an optional solution, in the handheld laser processing gun disclosed in the embodiment of the utility model, a laser generator 71 and a laser adjustment member 72 may be provided in the handheld gun body 10. The laser generator 71 is used to generate a laser beam. The laser adjustment member 72 may include an optical lens 721. Of course, in the case where the laser beam emitted by the laser generator 71 cannot pass through the optical lens 721 in a direction parallel to the axis of the optical lens 721, the laser adjustment member 72 may also include a reflector 722. In the specific working process, the laser beam generated by the laser generator 71 can pass through the optical lens 721 in a direction parallel to the axis of the optical lens 721 after the direction is adjusted by the reflector 722, and finally be emitted through the laser emission barrel 20 and the first nozzle 51 in sequence.

[0069] Furthermore, a protective lens 723 may be provided on the light-emitting side of the optical lens 721, and the laser adjustment member 72 may include the protective lens 723. The protective lens 723 can prevent foreign matter intruding into the handheld gun body 10 from damaging the optical lens 721. The protective lens 723 is only for the laser beam to pass through, and does not play a dimming role. The optical lens 721 has a dimming function.

[0070] The above embodiments of the present invention focus on the differences between the various embodiments. As long as the different optimization features of the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0071] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A processing head of a handheld laser processing gun, the handheld laser processing gun comprising a handheld gun body (10) and a laser output gun barrel (20), the laser output gun barrel (20) being connected to the handheld gun body (10), characterized in that: The processing head (50) comprises a first nozzle (51) and a second nozzle (52), the tail end of the first nozzle (51) being used to be connected to the laser output barrel (20) so that the laser beam emitted by the laser output barrel (20) is emitted from the first nozzle (51), the second nozzle (52) and the first nozzle (51) are an integrated structure, the handheld laser processing gun further comprises at least one of an air jet tube (30) and a welding wire feeding tube (40), the tail end of the second nozzle (52) being used to be connected to at least one of the air jet tube (30) and the welding wire feeding tube (40), the front end of the first nozzle (51) and the front end of the second nozzle (52) gradually approach each other in a direction away from the laser output barrel (20).

2. The processing head of the handheld laser processing gun according to claim 1, characterized in that: The handheld laser processing gun further comprises an air jet tube (30) and a welding wire feeding tube (40), and the processing head (50) further comprises a third nozzle (53), the tail end of the second nozzle (52) is used to be connected to one of the air jet tube (30) and the welding wire feeding tube (40), and the tail end of the third nozzle (53) is used to be connected to the other of the air jet tube (30) and the welding wire feeding tube (40), the front end of the first nozzle (51), the front end of the second nozzle (52) and the front end of the third nozzle (53) are gradually approached in a direction away from the laser emitting gun barrel (20), and the third nozzle (53) is fixedly connected to at least one of the second nozzle (52) and the first nozzle (51).

3. The processing head of the handheld laser processing gun according to claim 2, characterized in that: The second nozzle (52) is located between the first nozzle (51) and the third nozzle (53); or, the third nozzle (53) is located between the first nozzle (51) and the second nozzle (52); or, the first nozzle (51) is located between the second nozzle (52) and the third nozzle (53).

4. The processing head of the handheld laser processing gun according to claim 3, characterized in that: When the second nozzle (52) is located between the first nozzle (51) and the third nozzle (53), the angle between the penetration direction of the second nozzle (52) and the penetration direction of the first nozzle (51) is 15 to 30°, and the angle between the penetration direction of the third nozzle (53) and the penetration direction of the first nozzle (51) is 40 to 50°; or, When the third nozzle (53) is located between the first nozzle (51) and the second nozzle (52), the angle between the penetration direction of the third nozzle (53) and the penetration direction of the first nozzle (51) is 15 to 30 degrees, and the angle between the penetration direction of the second nozzle (52) and the penetration direction of the first nozzle (51) is 40 to 50 degrees.

5. The processing head of the handheld laser processing gun according to claim 2, characterized in that: The third nozzle (53), the second nozzle (52) and the first nozzle (51) are an integrated structure; or, the third nozzle (53) is detachably mounted on the integrated structure formed by the first nozzle (51) and the second nozzle (52).

6. The processing head of the handheld laser processing gun according to claim 5, characterized in that: The processing head (50) further comprises a first connecting plate rib (54), the first nozzle (51) and the second nozzle (52) are connected via the first connecting plate rib (54), and the three are an integrated structure, the second nozzle (52) and the third nozzle (53) are both arranged on the same side of the first nozzle (51), and the second nozzle (52) is located between the third nozzle (53) and the first nozzle (51), and the processing head (50) further comprises a second connecting plate rib (55), and the second nozzle (52) is connected to the third nozzle (53) via the second connecting plate rib (55), wherein: The second nozzle (52), the second connecting plate rib (55) and the third nozzle (53) are an integrated structure; or, the second connecting plate rib (55) is provided with a mounting hole (553), and the third nozzle (53) is detachably mounted on the mounting hole (553).

7. The processing head of the handheld laser processing gun according to claim 2, characterized in that: The nozzle channels of at least two of the first nozzle (51), the second nozzle (52) and the third nozzle (53) partially merge in a direction close to the front end of the processing head (50) and share a nozzle opening on the end face of the front end of the processing head (50).

8. The processing head of the handheld laser processing gun according to claim 2, characterized in that: The tail end of the third nozzle (53) is used to be connected to the welding wire conveying pipe (40), there is only one third nozzle (53), and the nozzle channel of the third nozzle (53) is used to convey a plurality of welding wires; Or, there are multiple third nozzles (53), and the nozzle channel of each third nozzle (53) is only used to convey one welding wire; And / or, the nozzle channel (531) of the third nozzle (53) includes a first equal-diameter hole (503), a tapered hole (504) and a second equal-diameter hole (505), the first equal-diameter hole (503), the tapered hole (504) and the second equal-diameter hole (505) are connected in sequence and coaxially arranged, the first equal-diameter hole (503) is connected to the large end of the tapered hole (504) and has the same diameter as the large end of the tapered hole (504), and the second equal-diameter hole (505) is connected to the small end of the tapered hole (504) and has the same diameter as the small end of the tapered hole (504).

9. The processing head of the handheld laser processing gun according to claim 1, characterized in that: The tail end of the second nozzle (52) is used to be connected to the air injection pipe (30), and the processing head (50) is provided with a flow diversion channel (56), and the flow diversion channel (56) is at least partially arranged around the nozzle channel of the first nozzle (51) to cool the first nozzle (51); And / or, the nozzle opening of the second nozzle (52) is a mesh nozzle, an annular nozzle, an arc-shaped nozzle, or is arranged around the nozzle opening of the first nozzle (51); and / or, the nozzle opening of the first nozzle (51) is in the shape of a racetrack, a circle or an ellipse; And / or, the processing head (50) further comprises a supporting protrusion (57), wherein the supporting protrusion (57) protrudes from the edge of the bottom of the processing head (50); And / or, the nozzle channel (511) of the first nozzle (51) comprises a sub-channel of equal diameter (501) and a sub-channel of reduced diameter (502), the sub-channel of equal diameter (501) being used to connect the laser output barrel (20) with the sub-channel of reduced diameter (502), and the diameter of the sub-channel of reduced diameter (502) gradually decreases in a direction away from the sub-channel of equal diameter (501).

10. A handheld laser processing gun, characterized in that: The invention comprises a handheld gun body (10), a laser output gun barrel (20) and a processing head (50) according to any one of claims 1 to 9, wherein the laser output gun barrel (20) is connected to the handheld gun body (10), and the tail end of the first nozzle (51) is connected to the laser output gun barrel (20) so that the laser beam emitted by the laser output gun barrel (20) is emitted from the first nozzle (51), and the handheld laser processing gun further comprises at least one of an air jet tube (30) and a welding wire feeding tube (40), and the tail end of the second nozzle (52) is connected to at least one of the air jet tube (30) and the welding wire feeding tube (40).

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