Laser welding device

Abstract

The utility model belongs to the technical field of welding devices, and particularly relates to a laser welding device which comprises a laser welding mechanism which comprises a laser welder and a protective lens arranged at the tail end of the laser welder. The three-dimensional movement mechanism comprises a first movement assembly, a second movement assembly and a third movement assembly; and the photographing mechanism is arranged on the second movement assembly, and after the second movement assembly drives the laser welding mechanism and the first movement assembly to move in the second direction, the position of the photographing mechanism corresponds to the position of the protective lens. The three-dimensional movement mechanism drives the laser welding mechanism to conduct three-dimensional movement, so that the laser welding device can conduct laser welding on the to-be-welded workpiece at any multiple positions, and after the second movement assembly drives the laser welding mechanism to move in the second direction, the position of the photographing mechanism corresponds to the position of the protective lens. And the photographing mechanism photographs the protective lens so as to judge whether the protective lens needs to be maintained or replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding devices, and in particular relates to a laser welding device. Background Art

[0002] A laser welding machine utilizes a high-energy-density laser beam as a heat source for welding. A laser generator generates a high-energy laser beam, which is focused on the weld area of ​​the workpiece, instantly melting and fusing the materials being welded. The high energy density and precise focusing characteristics of the laser beam enable high-precision and efficient welding.

[0003] The existing laser welding machine includes a laser welder and a protective lens for protecting the welding head of the laser welder. During the laser welding process, the protective lens can reduce laser reflection and scattering, and protect the welding head from high temperature, spatter and dust. However, during the welding process, there is a situation where foreign matter sticks to the protective lens, which may burn the lens. If the protective lens is burned out and cannot be discovered in time, the welding quality cannot be guaranteed in this state, so there is a risk of defective welded products being delivered to the client. The commonly used detection method at present is manual inspection of the protective lens, but this method is not timely, or manual inspection of the welded product is performed, and the quality of the product is used to determine whether the protective lens needs to be replaced. However, this method cannot accurately determine the quality of the product (for example, the burnt point of the product is small and not much different from conventional products), resulting in an inability to accurately determine whether the protective lens needs to be replaced. Utility Model Content

[0004] The utility model provides a laser welding device, which aims to solve the technical problems that the existing manual detection method of protective lenses is not timely, or the method of manually judging the quality of protective lenses by detecting welded products is inaccurate.

[0005] The utility model is implemented as follows: a laser welding device is provided, comprising:

[0006] A laser welding mechanism, comprising a laser welder and a protective lens disposed at the end of the laser welder;

[0007] A three-dimensional motion mechanism, comprising a first motion assembly, a second motion assembly, and a third motion assembly, wherein the laser welding mechanism is disposed on the first motion assembly, the first motion assembly is disposed on the second motion assembly, and the second motion assembly is disposed on the third motion assembly, wherein the first motion assembly drives the laser welding mechanism to move in a first direction, the second motion assembly drives the laser welding mechanism and the first motion assembly to move in a second direction, and the third motion assembly drives the laser welding mechanism, the first motion assembly, and the second motion assembly to move in a third direction;

[0008] The photographing mechanism is arranged on the second motion component. After the second motion component drives the laser welding mechanism and the first motion component to move toward the second direction, the position of the photographing mechanism corresponds to the position of the protective lens.

[0009] In some embodiments, the first motion mechanism includes a first guide rail, a first guide plate and a first driving member, the first guide plate is arranged on the first guide rail, and the laser welding mechanism is arranged on the first guide plate; under the drive of the first driving member, the first guide plate moves on the first guide rail to drive the laser welding mechanism to move toward the first direction.

[0010] In some embodiments, the second motion mechanism includes a second guide rail, a second guide plate and a second driving member, the second guide plate is arranged on the second guide rail, and the first motion component is arranged on the second guide plate; under the drive of the second driving member, the second guide plate moves on the second guide rail to drive the laser welding mechanism and the first motion component to move toward the second direction.

[0011] In some embodiments, the photographing mechanism is disposed at one end of the second guide rail, and the end is positioned toward the laser welding mechanism.

[0012] In some embodiments, the photographing mechanism includes a fixing seat disposed at the end position and a camera disposed on the fixing seat.

[0013] In some embodiments, the third motion component includes a third guide rail, a third guide plate and a third driving member, the third guide plate is arranged on the third guide rail, and the second motion component is arranged on the third guide plate; under the drive of the third driving member, the third guide plate moves on the third guide rail to drive the laser welding mechanism, the first motion component and the second motion component to move toward a third direction.

[0014] In certain embodiments, the laser welding device further includes a workbench, on which a working area is provided for placing the workpiece to be welded.

[0015] In some embodiments, the laser welding device further includes a vacuum adsorption mechanism, and the vacuum adsorption mechanism is disposed on the working area.

[0016] In some embodiments, the vacuum adsorption mechanism includes a plurality of adsorption holes provided on the working area and a vacuum pump connected to the adsorption holes.

[0017] In some embodiments, the three-dimensional motion mechanism is disposed on the workbench.

[0018] The utility model provides a laser welding device, in which a three-dimensional motion mechanism drives the laser welding mechanism to perform three-dimensional motion, so that the laser welder can perform laser welding on the workpiece to be welded at any multiple positions. After the second motion component drives the laser welding mechanism to move in a second direction, the position of the photographing mechanism corresponds to the position of the protective lens, and the photographing mechanism takes a picture of the protective lens to determine whether the protective lens needs to be repaired or replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a laser welding device provided by an embodiment of the present utility model;

[0020] Figure 2 is based on Figure 1 A partial enlarged view of part A. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention. In addition, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "left", "right", "horizontal", "top", "bottom", 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, rather than indicating or implying 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.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0027] The present invention provides a laser welding device, comprising:

[0028] A laser welding mechanism, comprising a laser welder 110 and a protective lens 120 disposed at the end of the laser welder 110;

[0029] A three-dimensional motion mechanism, comprising a first motion assembly, a second motion assembly, and a third motion assembly, wherein the laser welding mechanism is disposed on the first motion assembly, the first motion assembly is disposed on the second motion assembly, and the second motion assembly is disposed on the third motion assembly, wherein the first motion assembly drives the laser welding mechanism to move in a first direction, the second motion assembly drives the laser welding mechanism and the first motion assembly to move in a second direction, and the third motion assembly drives the laser welding mechanism, the first motion assembly, and the second motion assembly to move in a third direction;

[0030] The photographing mechanism is arranged on the second motion component. After the second motion component drives the laser welding mechanism and the first motion component to move toward the second direction, the position of the photographing mechanism corresponds to the position of the protective lens 120.

[0031] The first direction can be as follows Figure 1 The z direction shown, the second direction can be as follows Figure 1 The y direction shown, the third direction can be as follows Figure 1 The x direction is shown.

[0032] The three-dimensional motion mechanism can drive the laser welder 110 to perform three-dimensional motion. For example, the first motion component drives the laser welder 110 to move in a first direction, the second motion component drives the laser welder 110 to move in a second direction, and the third motion component drives the laser welder 110 to move in a third direction, thereby enabling the laser welder 110 to perform laser welding on the workpiece to be welded at any multiple positions. During this process, the photographing mechanism will not interfere with the laser welder 110.

[0033] The laser welder 110 includes a laser, an optical system and a welding head. The laser generates a high-energy-density laser beam. After adjustment and transmission by the optical system, the welding head focuses and aligns the laser beam so that the laser beam accurately acts on the workpiece to be welded.

[0034] When the laser welder 110 is not in use, for example, before laser welding, after laser welding is paused, or after laser welding is completed, the second motion assembly drives the laser welding mechanism to move in the second direction. The position of the camera mechanism corresponds to the position of the protective lens 120, and the camera mechanism takes a picture of the protective lens 120 to determine whether the protective lens 120 needs repair or replacement. For example, after the camera mechanism takes a picture of the protective lens 120, it compares the image of the protective lens 120 with a pre-stored image obtained by taking a picture of an intact (or unburned) protective lens 120, thereby determining whether the protective lens 120 needs repair or replacement. If repair or replacement is not necessary, the laser welder 110 can be used again. If repair or replacement is necessary, the laser welder 110 is stopped and can only be used again after the protective lens 120 is repaired or replaced.

[0035] It should be noted that the present invention is intended to protect the composition and connection relationship of the hardware structure (ie, the physical structure) of the laser welding device, and is not intended to protect the improvement of the control process itself.

[0036] refer to Figure 1 In some specific embodiments of the present application, the first motion mechanism includes a first guide rail 211, a first guide plate 212, and a first driving member 213. The first guide plate 212 is disposed on the first guide rail 211, and the laser welding mechanism is disposed on the first guide plate 212. Driven by the first driving member 213, the first guide plate 212 moves on the first guide rail 211, thereby driving the laser welding mechanism to move in a first direction. The first guide rail 211 is disposed in the first direction, and the first driving member 213 can be a linear motor, which drives the first guide plate 212 to drive the laser welding mechanism to move on the first guide rail 211, thereby achieving movement of the laser welding mechanism in the first direction.

[0037] refer to Figure 1 In some specific embodiments of the present application, the second motion mechanism includes a second guide rail 221, a second guide plate 222, and a second drive member 223. The second guide plate 222 is disposed on the second guide rail 221, and the first motion assembly is disposed on the second guide plate 222. Driven by the second drive member 223, the second guide plate 222 moves on the second guide rail 221, thereby driving the laser welding mechanism and the first motion assembly to move in the second direction. The second guide rail 221 is disposed in the second direction, and the second drive member 223 can be a linear motor, which drives the second guide plate 222 to drive the laser welding mechanism and the first motion assembly to move on the second guide rail 221, thereby achieving movement of the laser welding mechanism and the first motion assembly in the second direction.

[0038] refer to Figure 1 In some specific embodiments of the present application, the camera mechanism is disposed at one end of the second guide rail 221, and this end is positioned toward the laser welding mechanism. The camera mechanism is fixedly disposed at one end of the second guide rail 221. When the third motion assembly drives the laser welding mechanism, the first motion assembly, and the second motion assembly to move in the third direction, the camera mechanism is also driven to move in the third direction. However, when the first motion assembly drives the laser welding mechanism in the first direction, the camera mechanism is not driven to move. When the second motion assembly drives the laser welding mechanism and the first motion assembly in the second direction, the camera mechanism is not driven to move.

[0039] refer to Figure 1 and Figure 2 In some specific embodiments of the present application, the photographing mechanism includes a fixing base 310 disposed at the end position and a camera 320 disposed on the fixing base 310. The fixing base 310 provides support for the camera 320. After the second motion assembly drives the laser welding mechanism and the first motion assembly to move in the second direction, the position of the camera 320 corresponds to the position of the protective lens 120, and the camera 320 can take a picture of the protective lens 120.

[0040] refer to Figure 1 In some specific embodiments of the present application, the third motion assembly includes a third guide rail 231, a third guide plate 232, and a third drive member 233. The third guide plate 232 is disposed on the third guide rail 231, and the second motion assembly is disposed on the third guide plate 232. Driven by the third drive member 233, the third guide plate 232 moves on the third guide rail 231, thereby driving the laser welding mechanism, the first motion assembly, and the second motion assembly to move in a third direction. The third guide rail 231 is disposed in the third direction, and the third drive member 233 may be a linear motor that drives the third guide plate 232 to drive the laser welding mechanism, the first motion assembly, and the second motion assembly to move on the third guide rail 231, thereby achieving movement of the laser welding mechanism, the first motion assembly, and the second motion assembly in the third direction.

[0041] refer to Figure 1In some specific embodiments of the present application, the laser welding device further includes a workbench 400, on which a work area 410 for placing the workpiece to be welded is provided. The laser welding process of the laser welding device is as follows: after the workpiece to be welded is placed in the work area 410, the three-dimensional motion mechanism can drive the laser welder 110 to perform three-dimensional motion. For example, the first motion component drives the laser welder 110 to move in a first direction, the second motion component drives the laser welder 110 to move in a second direction, and the third motion component drives the laser welder 110 to move in a third direction, thereby enabling the laser welder 110 to perform laser welding on the workpiece to be welded at any number of positions. During this process, the camera mechanism will not interfere with the laser welder 110.

[0042] In some specific embodiments of the present application, the laser welding device further includes a vacuum adsorption mechanism, which is disposed on the working area 410. The vacuum adsorption mechanism adsorbs the workpiece to be welded on the working area 410 through the vacuum adsorption principle.

[0043] In some specific embodiments of the present application, the vacuum adsorption mechanism includes a plurality of adsorption holes provided on the working area 410 and a vacuum pump connected to the adsorption holes. After the workpiece to be welded is placed in the working area 410, the vacuum pump is activated to absorb the space between the workpiece to be welded and the working area 410 through the adsorption holes, thereby creating a vacuum between the two and adsorbing the workpiece to be welded onto the working area 410.

[0044] The workpiece to be welded can also be fixed on the working area 410 by other means. For example, the working area 410 is provided with multiple fixing parts such as fixing blocks. After the workpiece to be welded is placed in the working area 410, the workpiece to be welded contacts the fixing blocks, and the workpiece to be welded is fixed by the fixing blocks.

[0045] refer to Figure 1 In some specific embodiments of the present application, the three-dimensional motion mechanism is disposed on the workbench 400. The workbench 400 provides support for the three-dimensional motion mechanism and facilitates the three-dimensional motion mechanism to be disposed close to the working area 410, thereby reducing the travel distance of the laser welding mechanism.

[0046] Throughout this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" indicate that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] In addition, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser welding device, characterized in that: include: A laser welding mechanism, comprising a laser welder and a protective lens disposed at the end of the laser welder; A three-dimensional motion mechanism, comprising a first motion assembly, a second motion assembly, and a third motion assembly, wherein the laser welding mechanism is disposed on the first motion assembly, the first motion assembly is disposed on the second motion assembly, and the second motion assembly is disposed on the third motion assembly, wherein the first motion assembly drives the laser welding mechanism to move in a first direction, the second motion assembly drives the laser welding mechanism and the first motion assembly to move in a second direction, and the third motion assembly drives the laser welding mechanism, the first motion assembly, and the second motion assembly to move in a third direction; The photographing mechanism is arranged on the second motion component. After the second motion component drives the laser welding mechanism and the first motion component to move toward the second direction, the position of the photographing mechanism corresponds to the position of the protective lens.

2. The laser welding device according to claim 1, characterized in that The first motion component includes a first guide rail, a first guide plate and a first driving member. The first guide plate is arranged on the first guide rail, and the laser welding mechanism is arranged on the first guide plate. Under the drive of the first driving member, the first guide plate moves on the first guide rail to drive the laser welding mechanism to move toward the first direction.

3. The laser welding device according to claim 1, characterized in that The second motion component includes a second guide rail, a second guide plate and a second driving member. The second guide plate is arranged on the second guide rail, and the first motion component is arranged on the second guide plate. Under the drive of the second driving member, the second guide plate moves on the second guide rail to drive the laser welding mechanism and the first motion component to move in the second direction.

4. The laser welding device according to claim 3, characterized in that: The photographing mechanism is arranged at one end of the second guide rail, and the end is positioned toward the laser welding mechanism.

5. The laser welding device according to claim 4, characterized in that: The photographing mechanism comprises a fixing seat arranged at the end position and a camera arranged on the fixing seat.

6. The laser welding device according to claim 1, characterized in that The third motion component includes a third guide rail, a third guide plate and a third driving member. The third guide plate is arranged on the third guide rail, and the second motion component is arranged on the third guide plate. Under the drive of the third driving member, the third guide plate moves on the third guide rail to drive the laser welding mechanism, the first motion component and the second motion component to move toward a third direction.

7. The laser welding device according to claim 1, characterized in that: The laser welding device further comprises a workbench, on which a working area for placing workpieces to be welded is provided.

8. The laser welding device according to claim 7, characterized in that: The laser welding device further includes a vacuum adsorption mechanism, which is arranged on the working area.

9. The laser welding device according to claim 8, characterized in that: The vacuum adsorption mechanism includes a plurality of adsorption holes provided on the working area and a vacuum pump communicated with the adsorption holes.

10. The laser welding device according to claim 7, characterized in that: The three-dimensional motion mechanism is arranged on the workbench.

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