Laser filler wire welding processing head

Abstract

The utility model belongs to the technical field of laser processing equipment, and particularly relates to a laser filler wire welding processing head. The machining head comprises a machining head body, a flexible wire guide pipe and at least one adjusting assembly. The flexible wire guide pipe is a flexible pipe used for conveying welding materials, and the flexible wire guide pipe extends along the peripheral contour of any side of the machining head body. One end of the flexible wire guide tube is a wire outlet end, and the other end opposite to the wire outlet end is a wire inlet end. The wire outlet end is arranged at a preset angle relative to the light outlet end. The first adjusting support can drive the flexible wire guide pipe to rotate relative to the machining head body so as to adjust the curvature of the curve where the flexible wire guide pipe is located, welding materials (including but not limited to welding wires or welding powder) of different diameter sizes can smoothly penetrate through the machining head, and the use diversity is improved. Meanwhile, the overall space proportion of the machining head can be greatly reduced due to the change of the curvature, the machining head is more flexible to use, and a welding seam in a narrow space can be conveniently welded.

Description

Technical Field

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

[0002] Laser welding is a new type of welding process that uses high-energy laser pulses to locally heat a tiny area of ​​the processed material. The heat generated by the powerful laser radiation energy melts the material at the welding position. After the material melts, a specific molten pool is formed to achieve the purpose of laser welding.

[0003] At present, in the process of laser welding, the welding wire is delivered to the welding head by a wire feeder to weld the workpiece. Usually, the wire feed tube is set on the welding head body through a bracket, and the wire feed tube delivers the welding material toward the light output end along a fixed posture. However, this structure will limit the size of the welding wire delivered by the wire guide tube, and can only smoothly pass through welding materials with small diameters. When welding materials with larger diameters pass through, there will be jamming, which seriously affects the welding quality; secondly, the gun head size of this structure is large, which limits the use scenarios of the processing head. Utility Model Content

[0004] The utility model aims to provide a laser wire-filling welding processing head, aiming to solve the problems in the prior art that the processing head is large in size and cannot weld workpieces in a narrow space and that thicker welding wires become stuck.

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

[0006] Processing head body;

[0007] A flexible wire guide tube is provided with a wire feeding channel therethrough, the flexible wire guide tube has a wire outlet end and a wire inlet end which are arranged opposite to each other, and the wire outlet end is arranged at a predetermined angle β relative to the light outlet end of the processing head body;

[0008] At least one adjustment component includes a first adjustment bracket, a flexible wire guide tube can be movably inserted into the first adjustment bracket, and is extended along the outer contour of any side of the processing head body. The first adjustment bracket can be rotatably arranged on the processing head body, so that the curvature of the curve where the flexible wire guide tube is located can be adjusted to allow welding materials of different diameters to pass smoothly through the wire feeding channel.

[0009] In one embodiment, a groove portion is provided on one side of the processing head body close to the flexible wire guide tube and arranged along the extension direction of the processing head body. After the curvature of the flexible wire guide tube is adjusted to a predetermined value, at least a portion of the flexible wire guide tube can be clamped in the groove portion.

[0010] In one embodiment, the adjustment component rotates by a predetermined angle relative to the circumferential direction of the light emitting direction of the processing head body.

[0011] In one embodiment, a wire guide tube fixing portion is provided at the light-emitting end of the processing head body, the wire guide tube fixing portion has a wire outlet, the flexible wire guide tube is connected to the wire outlet, and the flexible wire guide tube and the wire outlet are located on the same side of the processing head body.

[0012] In one embodiment, a laser wire welding processing head includes a first portion and a second portion connected at an angle, and an end of the first portion facing away from the second portion corresponds to a light emitting end of the processing head body.

[0013] In one embodiment, the flexible wire guide tube is external to the processing head body, and a first adjustment bracket is provided on each of the second part and the first part;

[0014] Alternatively, the second part has a built-in channel for the flexible wire guide tube or welding material to pass through, and the first adjustment bracket is arranged on the first part.

[0015] In one embodiment, the flexible wire guide tube is provided with a plurality of position-adjustable adjustment parts, and each adjustment part is arranged around the circumference of the flexible wire guide tube to enclose and form a clamping position with adjustable aperture.

[0016] In one embodiment, the adjustment assembly includes a base, and the first adjustment bracket can slide relative to the base along a direction intersecting the processing head body to drive the flexible wire guide tube to approach or move away from the processing head body.

[0017] In one embodiment, the adjustment assembly further includes a first fixed seat, the first fixed seat and the first adjustment bracket are rotatably connected via a damping force, and the first fixed seat is detachably assembled on the processing head body.

[0018] In one embodiment, the first adjustment bracket is provided with a plurality of tube holes spaced apart from each other, and each tube hole has a different diameter.

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

[0020] 1: The wire outlet end of the flexible wire guide tube of the present solution is arranged at a predetermined angle relative to the light outlet end of the processing head body, and the first adjustment bracket drives the flexible wire guide tube to rotate relative to the processing head body, so that the curvature of the extension path of the flexible wire guide tube is adjustable, so as to reduce the resistance of the welding material when passing through the wire feeding channel, and can be compatible with welding materials of more diameter sizes;

[0021] 2: After the curvature of the flexible wire guide tube is adjusted, the overall volume of the processing head can be adaptively reduced, the volume of the front end of the processing head is reduced as much as possible, and the control is more flexible, so as to facilitate the processing of workpieces in narrower scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a schematic diagram of the external adjustment of the flexible wire guide tube relative to the processing head body;

[0024] Figure 2 It is a schematic diagram of a flexible wire guide tube being clamped in a groove portion of a processing head body;

[0025] Figure 3 It is a schematic diagram of a flexible wire guide tube being arranged above a processing head body;

[0026] Figure 4 It is a schematic diagram of the rear end of the flexible wire guide tube being built-in relative to the processing head body;

[0027] Figure 5 is a three-dimensional schematic diagram of an adjustment component;

[0028] Figure 6 A schematic diagram of an adjustment portion disposed inside a flexible wire guide tube;

[0029] Figure 7 It is a schematic diagram of adjusting the curvature of the curve where the flexible wire guide tube is located.

[0030] Among them, the reference numerals in the figure are:

[0031] 1. Processing head body; 10. Light outlet end; 11. Groove portion; 12. Wire guide tube fixing portion; 13. First portion; 14. Second portion; 141. Built-in channel;

[0032] 2. Flexible wire guide tube; 21. Wire outlet; 22. Wire inlet; 23. Adjustment part; 20. Wire outlet channel; 24. First part; 25. Second part; 26. Third part;

[0033] 3. Adjustment assembly; 31. First adjustment bracket; 311. Pipe hole; 32. Base; 33. First fixing seat; β. Predetermined angle; DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] by Figure 1 The position of the processing head body defines the up, down, left and right positions of its components. Figure 1 As shown, the flexible wire guide tube 2 is located below the processing head body 1 .

[0039] like Figures 1 to 4 As shown, the processing head of the present application includes a processing head body 1, a flexible wire guide tube 2 and an adjustment component 3. The flexible wire guide tube 2 is a tube with flexible and bendable characteristics for conveying welding materials. One end of the flexible wire guide tube 2 is a wire outlet end 21 for outputting welding materials; the other end opposite to the wire outlet end 21 is a wire inlet end 22 for connecting to a wire feeder to convey welding materials into the flexible wire guide tube 2. The wire outlet end 21 is arranged close to the light outlet end 10 of the processing head body 1, and is used to cooperate with the laser beam to perform wire filling processing on the weld of the workpiece. In order to ensure the welding quality, the wire outlet end 21 is arranged at a predetermined angle β relative to the light outlet end 10, and even if the position and posture of the flexible wire guide tube 2 changes, it will not affect the accuracy of the wire outlet angle.

[0040] Specifically, the adjustment component 3 includes a first adjustment bracket 31, and the flexible wire guide tube 2 can be movably installed on the first adjustment bracket 31, and along the extension path of the processing head body 1 (that is, the outer contour of the overall shape of the processing head body 1, which can be understood as the outer wall contour of any side of the processing head body circumference, in one embodiment, it can be understood as Figure 1 The first adjusting bracket 31 is indirectly or directly rotatably arranged on the processing head body 1, and the first adjusting bracket 31 can realize the rotation process relative to the processing head body 1 through damping force or other hinged structures. It can be understood that the curve shape where the overall shape of the flexible wire guide tube 2 is basically close to any outer contour ( Figure 1 The figure shows the lower contour of the processing head body 1.

[0041] In summary, the first adjustment bracket 31 can drive the flexible wire guide tube 2 to rotate, so that the curvature of the flexible wire guide tube 2 can be adjusted. The flexible wire guide tube 2 with a larger curvature can smoothly pass through the welding material with a larger diameter, and the flexible wire guide tube 2 with a smaller curvature can smoothly pass through the welding material with a smaller diameter. It can be compatible with welding materials of different diameters at the same time, increasing the diversity of use. At the same time, the change in curvature can reduce the overall volume adaptability of the processing head, making it more flexible to use and convenient for welding welds in narrow spaces.

[0042] Please refer to Figure 7 The flexible wire guide tube 2 includes a first part 24, a second part 25 and a third part 26 which are arranged in sequence. The first part 23 of the flexible wire guide tube 2 is between the wire guide tube fixing part 12 and the first first adjustment bracket 31; the part between the two first adjustment brackets 31 is the second part 25, and the part between the second first adjustment bracket 31 and the light incident end of the processing head body 1 is the third part 26 of the flexible wire guide tube 2. It can be understood that the curvature adjustment of the curve where the flexible wire guide tube 2 of the present application is to adjust the curvature of each of the first part 23, the second part 25 and the third part 26.

[0043] In one embodiment, please refer to Figure 1 and Figure 2 A groove portion 11 is provided on one side of the processing head body 1 close to the flexible wire guide tube 2 and arranged along the extending direction of the processing head body 1 . After the curvature of the flexible wire guide tube 2 is adjusted to a predetermined value, at least a part of the flexible wire guide tube 2 can be stuck in the groove portion 11 .

[0044] In one embodiment, the laser wire welding processing head includes a first portion 13 and a second portion 14 connected at an angle, and the front end of the first portion 13 corresponds to the light output end 10 of the processing head body 1. A first adjustment bracket 31 is respectively provided on the second portion 14 and the first portion 13, and the flexible wire guide tube 2 is externally arranged relative to the processing head body 1. At this time, the groove portion 11 is provided at the position of the second portion 14, and after the curvature of the flexible wire guide tube 2 is adjusted to a predetermined value, the portion of the flexible wire guide tube 2 close to the wire feed end 22 can be bent and inserted into the above-mentioned groove portion 11, and form a whole with the processing head body 1, thereby reducing the volume near the second portion 14, facilitating the user's hand operation, and being more flexible.

[0045] Generally, during the processing of workpieces of certain materials: the welding material is usually located below the processing head body 1, that is, the welding material is located between the workpiece and the processing head body 1. When the laser beam is irradiated from the light-emitting end 10 to the surface of the workpiece, the welding material will be melted first. At this time, the welding material will generate more sparks and spatters in a wider range, which will affect the quality and aesthetics of the weld.

[0046] In order to solve the above problem, in one embodiment, the adjustment component 3 is configured to be rotatable relative to the processing head body 1 at any angle, so that the position of the flexible wire guide tube 2 relative to the workpiece and the processing head body 1 is adjustable to be suitable for processing workpieces of various materials. In other words, the flexible wire guide tube 2 can be smoothly positioned on any side around the processing head body 1, and the corresponding adjustment component 3 can move the position of the first adjustment bracket 31 on the processing head body 1. In specific applications, the flexible wire guide tube 2 can be set above the processing head body 1, such as Figure 3 As shown, in this way, the laser beam is radiated preferentially at the weld position and then radiates the welding material, which can effectively reduce the spatter level and improve the welding quality.

[0047] In one embodiment, the light-emitting end 10 of the processing head body 1 is provided with a wire guide tube fixing portion 12, the wire guide tube fixing portion 12 has a wire outlet, the flexible wire guide tube 2 is connected to the wire outlet, and the flexible wire guide tube 2 and the wire outlet are located on the same side of the processing head body 1. When the first adjustment bracket 31 can drive the flexible wire guide tube 2 to rotate circumferentially around the light-emitting direction of the processing head body 1, the corresponding wire guide tube fixing portion 12 will also rotate by the same angle to ensure that the wire outlet direction and the direction of the laser beam are maintained within a predetermined numerical range. Furthermore, the setting of the wire guide tube fixing portion 12 can correct the welding material so that the welding material reaching the surface of the workpiece is in a straight posture to prevent the welding material from bending.

[0048] Optionally, the processing head includes a nozzle, the nozzle is connected to the light-emitting end 10 of the first part 13, and the wire guide tube fixing part 12 is arranged on the nozzle, that is, the nozzle can be configured to be rotatable relative to the circumferential direction of the first part 13. Specifically, the wire guide tube fixing part 12 is arranged to be through-set at both ends on the nozzle, and has a channel with a circumferentially closed side wall.

[0049] Optionally, the wire guide tube fixing portion 12 is also adjustable relative to the nozzle, and the wire guide tube fixing portion 12 can be fine-tuned relative to the nozzle so that the predetermined angle β varies within a threshold range to better adapt to the curvature change of the flexible wire guide tube 2, so that the welding material passes through the wire outlet channel 21 more smoothly and with less resistance.

[0050] In another embodiment, the first part 13 is provided with a first adjustment bracket 31, and the flexible wire guide tube 2 is built-in relative to the second part 14 of the processing head. Figure 4 As shown, the second part 14 is built with a built-in channel 141 for the flexible wire guide tube 2 to pass through. At this time, the front end of the flexible wire guide tube 2 is mainly located near the first part 13, and is fixed to the first part 13 by the first adjustment bracket 31. The rear section of the flexible wire guide tube 2 (the flexible wire guide tube 2 includes a front section, a turning section and a rear section connected to each other) is passed through the built-in channel 141 to maintain a fixed curvature; the curvature of the front section and the turning section of the flexible wire guide tube 2 is adjusted by the first adjustment bracket 31 on the first part 13. Not only the compact design of the second part 14 is achieved, but also the partial adjustment of the curvature of the flexible wire guide tube 2 is achieved, and the transmission function of a larger size welding wire can be realized.

[0051] In other embodiments, the built-in channel 141 on the second portion 14 can be directly used to transport welding materials, which can further reduce the structural space occupied by the second portion 14. The rear end of the flexible wire guide tube 2 and the built-in channel 141 are detachably connected to each other.

[0052] In another embodiment, a plurality of adjustment portions 23 are provided in the built-in channel 141, and each adjustment portion 23 encloses a portion of the built-in channel 141, namely, a clamping position. The clamping position can be used to appropriately adjust the diameters of the welding material and the flexible wire guide tube 2 to fix them and prevent the welding material from shaking.

[0053] Of course, in other embodiments, the flexible wire guide tube 2 is provided with the adjusting portion 23, and the adjusting portion 23 is used to firmly clamp the welding materials of different diameters inside the flexible wire guide tube 2, so that the flexible wire guide tube 2 of one size can transmit welding materials of multiple diameters, saving the use of parts. Figure 6 The adjusting portion 23 can be configured as a slidable ball bearing to stabilize the welding material while reducing the sliding friction of the welding material.

[0054] In one embodiment, the first portion 13 can be lengthened or shortened along its extension direction to facilitate the user to adjust the defocus amount. Correspondingly, the extension path of the flexible guide wire tube 2 can also be appropriately adjusted in conjunction with the first adjustment bracket 31. The specific structure will not be described in detail here.

[0055] In one embodiment, the adjustment assembly 3 includes a base 32, and the first adjustment bracket 31 can slide relative to the base 32 in a direction intersecting the processing head body 1 to drive the flexible wire guide tube 2 to approach or move away from the processing head body 1 to match the curvature change of the flexible wire guide tube 2 to prevent the flexible wire guide tube 2 from bending or knotting. Figure 1 and Figure 5 In the example, the first adjustment bracket 31 slides relative to the base 32 along a direction intersecting the machining head body 1 .

[0056] In one embodiment, the adjustment assembly 3 further includes a first fixing seat 33, the first fixing seat 33 and the first adjustment bracket 31 are rotatably connected through a damping force, and the first fixing seat 33 is detachably assembled to the processing head body 1 through fasteners, threads, adapters, etc. The first fixing seat 33 can be adaptively adjusted at the position of the second part 14 or the first part 13 to select the best support point for fixing the flexible guide wire tube 2.

[0057] In one embodiment, a flexible wire guide tube 2 of a corresponding size can also be selected according to the different diameters of the welding material, and each type of flexible wire guide tube 2 corresponds to a size of welding material. In order to fix the flexible wire guide tubes 2 of different sizes, the first adjustment bracket 31 is provided with a plurality of tube holes 311 spaced apart from each other, and the diameters of the tube holes 311 are also different.

[0058] 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.

[0059] 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 wire welding processing head, characterized in that: include: Processing head body (1); A flexible wire guide tube (2) having a wire feeding channel extending therethrough, the flexible wire guide tube (2) having a wire outlet end (21) and a wire inlet end (22) arranged opposite to each other, the wire outlet end (21) being arranged at a predetermined angle (β) relative to the light outlet end (10) of the processing head body (1); At least one adjustment component (3) comprises a first adjustment bracket (31), the flexible wire guide tube (2) being movably arranged through the first adjustment bracket (31) and extending along the outer contour of any side of the processing head body (1), the first adjustment bracket (31) being rotatably arranged on the processing head body (1), so that the curvature of the curve on which the flexible wire guide tube (2) is located is adjustable, so that welding materials of different diameters can smoothly pass through the wire feeding channel.

2. The laser wire welding processing head according to claim 1, characterized in that: A groove portion (11) is provided on one side of the processing head body (1) close to the flexible wire guide tube (2) and arranged along the extension direction of the processing head body (1); after the curvature of the flexible wire guide tube (2) is adjusted to a predetermined value, at least a portion of it can be clamped in the groove portion (11).

3. The laser wire welding processing head according to claim 1, characterized in that: The adjustment component (3) is circumferentially rotated by a predetermined angle relative to the light emitting direction of the processing head body (1).

4. The laser wire welding processing head according to claim 1, characterized in that: The light-emitting end (10) of the processing head body (1) is provided with a wire guide tube fixing portion (12), the wire guide tube fixing portion (12) having a wire outlet, the flexible wire guide tube (2) being connected to the wire outlet, and the flexible wire guide tube (2) and the wire outlet (121) being located on the same side of the processing head body (1).

5. The laser wire welding processing head according to claim 1, characterized in that: The laser wire welding processing head comprises a first part (13) and a second part (14) connected at an angle, and an end of the first part (13) facing away from the second part (14) corresponds to a light emitting end (10) of the processing head body (1).

6. The laser wire welding processing head according to claim 5, characterized in that: The flexible wire guide tube (2) is arranged outside the processing head body (1), and the second part (14) and the first part (13) are each provided with a first adjustment bracket (31); Alternatively, the second part (14) is provided with a built-in passage (141) for the flexible wire guide tube (2) or welding material to pass through, and the first adjustment bracket (31) is arranged on the first part (13).

7. The laser wire welding processing head according to claim 1, characterized in that: The flexible wire guide tube (2) is provided with a plurality of position-adjustable adjustment portions (23), and each of the adjustment portions (23) is arranged around the circumference of the flexible wire guide tube (2) to enclose a clamping position with an adjustable aperture.

8. The laser wire welding processing head according to claim 1, characterized in that: The adjustment assembly (3) comprises a base (32), and the first adjustment bracket (31) can slide relative to the base (32) along a direction intersecting the processing head body (1) to drive the flexible wire guide tube (2) to approach or move away from the processing head body (1).

9. The laser wire welding processing head according to claim 1, characterized in that: The adjustment assembly (3) further comprises a first fixing seat (33), the first fixing seat (33) and the first adjustment bracket (31) being rotatably connected via a damping force, and the first fixing seat (33) being detachably mounted on the processing head body (1).

10. The laser wire welding processing head according to claim 1, characterized in that: The first adjustment bracket (31) is provided with a plurality of tube through holes (311) arranged at intervals from each other, and each of the tube through holes (311) has a different diameter.

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