Laser processing head

Abstract

The utility model belongs to the technical field of laser processing equipment, and particularly relates to a laser processing head. The laser processing head comprises a main body, a connecting body, a lens assembly and a turnover fixing structure; a laser emitting assembly for emitting a laser beam is arranged in the main body; the connecting body is internally through, hinged to the light emitting end of the main body and used for conveying the laser beam. The lens assembly is detachably arranged in the main body or the connecting body and is coaxial with the central optical axis of the laser beam, the turnover fixing structure comprises a turnover shaft, and the connecting body is detachably arranged on the main body through the turnover shaft and turns over relative to the main body around the central axis of the turnover shaft, so that the lens assembly can be disassembled and assembled from the opening of the main body or the connecting body. On one hand, the time of replacing parts by a user is saved; and on the other hand, the problem that the laser channel and the lens assembly in the main body are polluted due to dust generated by friction between detachable connecting bodies such as the lens assembly and the gun barrel assembly and the main body is avoided.

Description

Technical Field

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

[0002] In the actual application of laser processing, the dust, smoke and welding slag generated by laser processing are easy to adhere to each lens. Therefore, users will regularly replace each lens module and other parts to ensure good processing results.

[0003] Conventional designs use screws or a drawer-type structure to install the lens module into the mounting cavity. As a result, the lens mounting cavity is easily worn out and generates dust and debris, which in turn contaminates the lens, causing the lens to overheat and, in severe cases, burn out. Utility Model Content

[0004] The utility model aims to provide a laser processing head, aiming to solve the problem that the lens assembly 20 is easily overheated and burned due to dust pollution.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a laser processing head comprises:

[0006] A main body, in which a laser emitting assembly is arranged, and the laser emitting assembly is used to emit a laser beam;

[0007] A connector, the interior of the connector is connected and is used to transmit the laser beam;

[0008] A lens assembly, which is detachably disposed in the main body or the connector and is coaxially disposed with the central optical axis of the laser beam;

[0009] The flip fixing structure includes a flip axis, and the connector is hinged to the light-emitting end of the main body through the flip axis, and can be flipped to a preset position relative to the main body around the central axis of the flip axis, so that the lens assembly can be disassembled and assembled from the opening of the main body or the connector; wherein the central axis of the flip axis is perpendicular to the optical axis of the laser beam.

[0010] In one embodiment, the lens assembly is one or more of a collimating lens, a focusing lens, a reflecting mirror or a protective lens assembly.

[0011] In one embodiment, the lens assembly is an integrated assembly consisting of at least two of a collimating lens, a focusing lens, a reflecting lens, and a protective lens.

[0012] In one embodiment, the laser processing head further comprises a first bracket, and the lens assembly is detachably mounted in the main body or the connecting body via the corresponding first bracket.

[0013] In one embodiment, the connecting body includes a base and an extension component for transmitting the laser beam, and an end of the base facing away from the extension component is connected to the main body through a turning shaft.

[0014] In one embodiment, the base is configured as a connector, and a lens assembly may be disposed therein.

[0015] In one embodiment, the laser processing head includes a plurality of connecting bodies, which are interconnected and hinged together.

[0016] In one embodiment, the flipping and fixing structure includes a positioning portion, and the positioning portion includes one or more of a positioning slot, a magnetic element, a positioning column, a lock, a buckle, and a fastener.

[0017] In one embodiment, the positioning portion is disposed at one end of the main body where the flip axis is located, and the positioning portion and the corresponding flip axis are disposed opposite to each other.

[0018] In one embodiment, a first sealing member for sealing is provided between the assembly gap between the connector and the main body; and / or a second sealing member for sealing is provided between the assembly gap between one of the main body and the connector and the corresponding lens assembly.

[0019] The utility model has at least the following beneficial effects:

[0020] 1. Avoid friction between the lens assembly, gun rod assembly and other detachable connectors and the main body, which will generate dust and cause pollution to the laser channel inside the main body;

[0021] 2. The flip-fixing structure is simple, and the opening or locking process is simple and quick, saving users time in replacing parts;

[0022] 3. Improved the modularity of each component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of one embodiment of flipping between the main body and the connector;

[0025] Figure 2 It is a three-dimensional schematic diagram of the main body and the connector;

[0026] Figure 3 It is an exploded schematic diagram of the first bracket, the lens assembly and the connector;

[0027] Figure 4 is a three-dimensional schematic diagram of a connector and a lens assembly in one embodiment;

[0028] Figure 5 is a three-dimensional schematic diagram of a connector and a lens assembly in another embodiment;

[0029] Figure 6 A schematic diagram of another embodiment of flipping between the main body and the connector;

[0030] Figure 7 It is a schematic diagram of the wire feeding tube being externally arranged relative to the laser processing head;

[0031] Figure 8 It is a schematic diagram of the wire feeding tube being built-in relative to the laser processing head;

[0032] Fig. 9 A schematic diagram of one embodiment of a laser processing head configured as a laser cutting head;

[0033] Fig.10 It is a schematic diagram of another embodiment when the laser processing head is configured as a laser cutting head.

[0034] Among them, the reference numerals in the figure are:

[0035] 10. Main body; 20. Lens assembly; 21. First bracket; 22. Connector; 221. Focusing lens connector; 222. Protective lens connector; 30. Flipping fixing structure; 31. Flipping axis; 32. Positioning part; 41. Base; 42. Gun barrel; 51. First sealing member; 52. Second sealing member; 61. Second bracket; 62. Wire feeding tube; 63. Wire feeding tube positioning bracket; 71. Lens barrel; 72. Cooling body; 73. Nozzle. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The laser processing head of the present application includes a main body 10, in which a laser emitting assembly for emitting a laser beam is disposed, and the processing head also includes a lens assembly 20, which can be one or more of a collimating lens assembly, a focusing lens assembly, a reflecting lens assembly, and a protective lens assembly arranged in sequence along the optical path. The laser processing head of the present application also includes a flipping fixing structure 30. Among them, any one of the collimating lens assembly, the focusing lens assembly, the reflecting lens assembly, and the protective lens assembly, or an integrated structure composed of two adjacent ones can be detachable relative to the main body 10.

[0041] Specifically, the processing head also includes a connector 22 and a lens assembly 20 detachably mounted in the connector 22. At the same time, the lens assembly 20 can also be arranged inside the main body 10. The connector 22 and the laser channel in the main body 10 for transmitting the laser beam are connected to each other, and openings are provided on both sides of the connector 22. The flip fixing structure 30 includes a flip shaft 31, and the central axis of the flip shaft 31 is perpendicular to the optical axis of the laser beam. Figure 2 and Figure 3 As shown, the connecting body 22 is detachably hinged to the light-emitting end of the main body 10 through the flip axis 31, so that the connecting body 22 rotates relative to the main body 10 around the central axis of the flip axis 31, so that the lens assembly 20 can be disassembled and assembled on the connecting body 22 or the main body 10. In this way, the problem of friction between the lens assembly 20 and the main body 10 (or the connecting body 22) and the subsequent generation of dust, which causes the laser channel to be contaminated, is avoided.

[0042] In summary, the present application sets a detachable connector such as the lens assembly 20 on the main body 10 through a flip structure. Compared with the drawer-type structure in the prior art, the module is convenient to disassemble and assemble, and friction will not cause dust pollution, further improving the service life of each lens and saving maintenance costs.

[0043] Please refer to Figure 3 When the lens assembly 20 includes a focusing lens assembly and a protective lens assembly, in one embodiment, the connector 22 includes a focusing lens connector 221 for mounting a focusing lens and a protective lens connector 222 for mounting a protective lens. The focusing lens connector 221 can be flipped from the main body 10, and the protective lens connector 222 can be flipped relative to the focusing lens connector 221. At least one flip axis 31 is provided on the top edges of both sides of the focusing lens connector 221, and the flip axis 31 is rotatably connected to the top edge of the main body 10. When the user is holding the lens assembly 20, gravity can be used to easily flip the lens assembly 20 back to the snap-fit ​​state. Optionally, the flip axis 31 and the main body 10 are detachably connected.

[0044] In another embodiment, please refer to Figure 4 The lens assembly 20 includes a focusing lens, a first bracket 21, and a focusing lens connector 221 for mounting the focusing lens. At least one flip axis 31 is arranged at the top edge of the focusing lens connector 221, and the flip axis 31 is rotatably connected to the top edge of the main body 10. The focusing lens is mounted inside the focusing lens connector 221 through the first bracket 21. The focusing lens and the first bracket 21 can be assembled as one body and can be freely disassembled from the opening of the focusing lens connector 221.

[0045] Optionally, at least one positioning guide is provided on the first bracket 21 for aligning the optical axis of the lens and the laser beam to prevent the lens and the laser axis from being eccentric.

[0046] Correspondingly, both the protective mirror assembly and the reflector assembly may be provided with the first bracket 21 or not. The corresponding structure may refer to the embodiment of the focusing mirror assembly described above, which will not be described in detail here.

[0047] In one embodiment, the lens assembly 20 is configured as a protective lens assembly. In this case, the focusing lens assembly can be integrally provided with the main body 10, that is, the focusing lens is installed in the main body 10. Of course, in other embodiments, the focusing lens assembly can be detachably mounted on the main body 10 through a flip fixing structure 30, and then the protective lens assembly can be detachably connected to the main body 10 along the light path transmission direction through another corresponding flip fixing structure 30.

[0048] In one embodiment, the reflector assembly and the focusing mirror assembly are configured as an integrated structure, that is, the reflector and the focusing mirror are arranged inside the same connector, and the order of the reflector and the focusing mirror along the optical path is not limited; or, the reflector assembly and the protective mirror assembly are an integrated structure, that is, the reflector and the protective mirror are arranged inside the same connector.

[0049] In one embodiment, the connector 22 includes a base 41 and an extension component for transmitting a laser beam, and one end of the base 41 away from the extension component is hinged to the light-emitting end of the body 10 through a flip axis. The laser processing head can be an automated large processing head or a small handheld processing head.

[0050] Please refer to Figures 1 to 8 In one embodiment, the laser processing head is temporarily explained as a handheld welding head. In this case, the laser processing head also includes a gun rod assembly for transmitting a laser beam and a flip fixing structure 30 for fixing the gun rod assembly. The connecting body 22 includes a base 41 and a gun rod 42 (generally referred to as an extension part) connected thereto. In other cases, the base 41 can also be configured as a protective lens connecting body 222 (such as Figures 1 to 3 , Fig.10 As shown in FIG. 1 , the base 41 and the protective mirror connecting body 222 share a housing. The end of the base 41 away from the gun rod 42 is connected to the corresponding flip axis 31 of the flip fixing structure 30 (as shown in FIG. Figure 6 At this time, in order to reduce the volume of the gun rod 42, the base 41 can be directly configured as the above-mentioned connector 22 for mounting the lens, that is, the lens assembly 20 is arranged inside the connector 22. Since the gun rod 42 is close to the laser outlet position of the laser processing head, at this time, the lens assembly 20 can be selected as at least one protective lens.

[0051] Please refer to Fig. 9 and Fig.10 In one embodiment, the laser processing head is temporarily explained as a large-scale automated cutting head. In this case, the laser processing head also includes a lens barrel for transmitting the laser beam, a cooling body, a ceramic ring, a nozzle and other components (generally referred to as extended components). In this case, a base 41, a lens barrel 71, a cooling body 72 and a nozzle 73 (i.e., the above-mentioned extended components) are sequentially arranged downstream of the optical path of the main body 10, as shown in FIG. Fig. 9 As shown, a flip fixing structure 30 is provided between the base 41 and the main body 10 , and a lens assembly 20 is provided inside the base 41 . The lens assembly 20 is a protective lens, and the base 41 can also be considered as a protective lens connector 222 .

[0052] like Fig.10As shown, the processing head includes a protective lens connector 222 that is flipped relative to the main body 10, and a focusing lens connector 221 can be fixedly connected to the main body 10 to facilitate replacement of the protective lens. Since the protective lens is close to the workpiece, it is more likely to be burned by splashes. Setting the structure where the protective lens is located as a quick replacement structure helps reduce dust pollution.

[0053] In summary, all bases 41 for mounting the lens assembly 20 in the present application can be provided in a connector structure for easy disassembly.

[0054] In one embodiment, Figure 3 , Figure 4 , Figure 5 , Fig. 9 and Fig.10 As shown, the flip fixing structure 30 includes positioning parts 32, each of which is used to limit and lock the connector when it is buckled on the main body 10. Optionally, the positioning part 32 includes one or more of a positioning slot, a magnetic element, a positioning column, a lock, a buckle and a fastener.

[0055] Taking the figure as an example, when the positioning part 32 is a magnetic element, the flip axis 31 is located at the top edge of the main body 10, and the positioning part 32 can be arranged at intervals along the assembly end face of the main body 10 and / or the assembly end face edge of the focusing lens connector 221, or set opposite to the flip axis 31.

[0056] In other embodiments, the positioning portion 32 is configured as a circle of slots or a plurality of positioning columns arranged along the edge of the assembly end surface of the connector 22. Correspondingly, a structure matching the positioning columns or slots is provided on the assembly end surface of the main body 10 to enhance assembly stability.

[0057] In other embodiments, the positioning portion 32 is configured as fasteners such as screws and safety pins, which are not listed here one by one.

[0058] In one embodiment, a first sealing member 51 for sealing is provided between the assembly gap between the lens assembly 20 (assembly end face of the connector 22) and the end face of the main body 10. The first sealing member 51 can be a sealing ring made of PU, rubber, silicone or foam.

[0059] In one embodiment, a second sealing member 52 for sealing is provided between the connector 22 and the corresponding lens assembly gap. The second sealing member 52 can be a sealing ring made of PU, rubber, silicone or foam.

[0060] In one embodiment, the focusing mirror assembly, the reflecting mirror assembly and the protective mirror assembly are detachably connected to the main body 10 via corresponding flipping and fixing structures 30 , respectively. At this time, each of the flipping axes 31 may be located on the same side of the main body 10 .

[0061] Optionally, each of the flip axes 31 may be located on a different side of the main body 10 .

[0062] In one embodiment, the flip axis 31 of the flip fixing structure 30 is configured as a plurality of short axis structures. Figure 6 As shown, the flip axis 31 of the flip fixing structure 30 is configured as a long axis structure; optionally, the flip axis 31 can be replaced by other hinge structures, which will not be described in detail here.

[0063] Optionally, the laser processing head further includes a wire feeding tube 62, such as Figure 7 and Figure 8 shown.

[0064] Please refer to Figure 7 A second bracket 61 is provided on the processing head, and the second bracket 61 can be provided on the base 41, or on the gun rod 42, or between the gun rod 42 and the base 41. In order to improve the stability of the wire feeding tube 62, at least one wire feeding tube positioning bracket 63 is also provided on the gun rod for the wire feeding tube to pass through.

[0065] Please refer to Figure 8 The wire feeding tube 62 is built-in relative to the laser processing head (the main body 10 and the gun barrel 42), and the extension arc of the wire feeding tube 62 inside the main body 10 is set to be larger. At this time, the wire feeding tube 62 may not be arranged along the inner wall of the main body 10, and a positioning portion for fixing the wire feeding tube 62 may be set in the internal space of the main body 10.

[0066] In optional scenarios, the laser processing head of the present application is used in various scenarios such as laser cutting, welding, and standard meeting, wherein the type of the above-mentioned lens components is not limited thereto and can be selectively set according to actual needs.

[0067] 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.

[0068] 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 laser processing head, characterized in that: include: A main body, in which a laser emitting assembly is disposed, and the laser emitting assembly is used to emit a laser beam; A connector, the interior of which is connected and hinged to the light-emitting end of the main body, and is used to transmit the laser beam; A lens assembly, which is detachably disposed in the main body or the connector and is coaxially disposed with the central optical axis of the laser beam; A flip fixing structure, wherein the flip fixing structure includes a flip axis, the connector is connected to the main body through the flip axis, and can be flipped to a preset position relative to the main body around the central axis of the flip axis, so that the lens assembly can be disassembled from the opening of the main body or the connector; wherein the central axis of the flip axis is perpendicular to the optical axis of the laser beam.

2. The laser processing head according to claim 1, characterized in that: The lens assembly is one or more of a collimating lens, a focusing lens, a reflecting lens or a protective lens assembly.

3. The laser processing head according to claim 1, characterized in that: The lens assembly is an integrated assembly consisting of at least two of a collimating lens, a focusing lens, a reflecting lens and a protective lens.

4. The laser processing head according to claim 1, characterized in that: The laser processing head also includes a first bracket, and the lens assembly is detachably mounted in the main body or the connecting body through the corresponding first bracket.

5. The laser processing head according to claim 4, characterized in that: The connecting body comprises a base and an extension component for conveying a laser beam, and one end of the base away from the extension component is connected to the main body through the flip shaft.

6. The laser processing head according to claim 5, characterized in that: The base is configured as the connector, and the lens assembly can be arranged inside.

7. The laser processing head according to claim 6, characterized in that: The laser processing head comprises a plurality of the connecting bodies, which are interconnected and hinged together.

8. The laser processing head according to claim 1, characterized in that: The flipping and fixing structure includes a positioning portion, and the positioning portion includes one or more of a positioning slot, a magnetic element, a positioning column, a lock, a buckle, and a fastener.

9. The laser processing head according to claim 8, characterized in that: The positioning portion is arranged at one end of the main body where the flip axis is located, and the positioning portion and the corresponding flip axis are arranged opposite to each other.

10. The laser processing head according to claim 1, characterized in that: A first sealing member for sealing is provided between the assembly gap between the connector and the main body; and / or a second sealing member for sealing is provided between the assembly gap between one of the main body and the connector and the corresponding lens assembly.

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