Ball-type laser welding device

Abstract

The utility model discloses a ball type laser welding device belongs to laser welding technical field, including support subassembly and laser welding head, support subassembly includes connecting support, elastic part, linear bearing and guide pillar, and laser welding head fixedly arranged on connecting support, and elastic part is set on the guide pillar, and with linear bearing elastic connection, and linear bearing is slid on the guide pillar through the elastic part elastic guide, and connecting support is fixedly connected with linear bearing. The structure utilizes laser welding head to roll along the workpiece to be welded, and the laser welding head can elastically move on the guide pillar during work, thereby reducing the moving resistance of the laser welding head, and avoiding scratching of the workpiece to be welded, and also avoiding collision damage of the laser welding head during movement, so as to improve the laser welding quality, the use stability and the service life of the laser welding head.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, specifically a ball-bearing laser welding device. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is mainly used for welding thin-walled materials and low-speed welding. The welding process is heat conduction type; the laser radiation heats the surface of the workpiece, and the surface heat diffuses inward through heat conduction. By controlling parameters such as the width, energy, peak power, and repetition frequency of the laser pulse, the workpiece is melted and thus bonded together. Examples include a laser welding device disclosed in Chinese Utility Model Patent No. CN202121562970.2, a laser welding apparatus and welding equipment disclosed in Chinese Utility Model Patent No. CN201822040056.6, a laser welding device disclosed in Chinese Utility Model Patent No. CN201821498754.4, and a laser welding worktable for a power battery casing disclosed in Chinese Utility Model Patent No. CN201420470470.X, etc.

[0003] However, in existing laser welding technologies, significant frictional resistance arises between the welding head and the workpiece after pressure is applied, leading to difficulties in welding path development and easily causing surface scratches on the workpiece, thus affecting weld quality. Therefore, further improvements are necessary. Utility Model Content

[0004] The present invention aims to provide a ball-bearing laser welding device to overcome the shortcomings of the prior art.

[0005] A ball-type laser welding device designed for this purpose includes a support assembly and a laser welding head. The support assembly includes a connecting bracket, an elastic element, a linear bearing, and a guide post. The laser welding head is fixedly mounted on the connecting bracket. The elastic element is sleeved on the guide post and elastically connected to the linear bearing. The linear bearing is elastically guided and slids on the guide post through the elastic element. The connecting bracket is fixedly connected to the linear bearing.

[0006] The guide post is provided with an upper connecting plate and a lower connecting plate. The upper connecting plate is fixed to the upper end of the guide post, and the lower connecting plate is fixed to the lower end of the guide post. One end of the elastic element acts elastically on the upper connecting plate, and the other end acts elastically on the linear bearing.

[0007] The upper connecting plate and the lower connecting plate are respectively provided with connecting plate fixing holes on the rear side and / or the outer side for fixed assembly.

[0008] The connecting bracket is provided with a bracket fixing hole and a connecting bracket assembly hole. The laser welding head is provided with a welding head fixing hole. The bracket fixing hole and the welding head fixing hole correspond to each other and are fixedly engaged by fasteners. The linear bearing is provided with a connecting column and is assembled on the connecting bracket assembly hole through the connecting column.

[0009] The linear bearing is provided with an elastic fitting post, and the elastic element acts elastically on the elastic fitting post.

[0010] A positioning step is provided between the connecting column and the elastic fitting column. A step fixing hole is provided on the positioning step. A bracket fastening hole is provided on the connecting bracket. The step fixing hole and the bracket fastening hole correspond to each other and are fixedly engaged by fasteners.

[0011] The laser welding head includes a laser optical path module, a ball bearing, and an assembly base. The ball bearing rolls at the bottom of the assembly base, and the laser optical path module is fixedly mounted on the top of the assembly base and irradiates the ball bearing with laser light.

[0012] The assembly base has an internal cavity and an external compressed air connection valve. The compressed air connection valve is connected to a compressed air supply end that supplies compressed air into the cavity. The ball bearings roll at the bottom of the assembly base under pressure by the compressed air.

[0013] The mounting base has a plurality of electrostatic air outlets arranged in a ring around the outer periphery of the ball bearings, and the electrostatic air connecting valve is connected to an electrostatic air supply end that provides electrostatic air to the plurality of electrostatic air outlets.

[0014] This invention, through structural improvements, utilizes a laser welding head that rolls along the workpiece to be welded, effectively reducing the moving resistance of the laser welding head during operation. This makes the laser welding process easier and smoother, ensuring welding quality and preventing scratches on the workpiece. Furthermore, by fixing the laser welding head to a connecting bracket, which is in turn fixedly connected to a linear bearing, and utilizing the elasticity of the elastic element on the linear bearing, the laser welding head can elastically move on the guide post during operation. This further reduces the moving resistance of the laser welding head, prevents scratches on the workpiece, and avoids collision damage during movement, thereby improving the stability and lifespan of the laser welding head. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0017] Figure 3 This is an exploded structural diagram of an embodiment of the present invention.

[0018] Figure 4 This is an exploded structural diagram from another perspective of an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the assembly cross-sectional structure of an embodiment of the present invention.

[0020] Figure 6 This is an exploded view of the support assembly.

[0021] Figure 7 This is an exploded structural diagram of the support assembly from another perspective. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1-7 This ball-bearing laser welding device includes a support assembly and a laser welding head. The support assembly includes a connecting bracket 1, an elastic element 2, a linear bearing 3, and a guide post 4. The laser welding head is fixedly mounted on the connecting bracket 1. The elastic element 2 is sleeved on the guide post 4 and elastically connected to the linear bearing 3. The linear bearing 3 slides on the guide post 4 through the elastic element 2. The connecting bracket 1 is fixedly connected to the linear bearing 3.

[0025] This embodiment utilizes the rolling of the laser welding head along the workpiece to be welded, effectively reducing the movement resistance of the laser welding head during operation. This makes the laser welding process easier and smoother, ensuring welding quality and preventing scratches on the workpiece to be welded, thus improving welding quality. Furthermore, the laser welding head is fixed on the connecting bracket 1, which is in turn fixedly connected to the linear bearing 3. The elastic element 2 further utilizes the elastic effect of the linear bearing 3 to allow the laser welding head to move elastically on the guide post 4 during operation. This further reduces the movement resistance of the laser welding head and prevents scratches on the workpiece to be welded. It also prevents collision damage to the laser welding head during movement, thereby improving the stability and lifespan of the laser welding head.

[0026] The guide post 4 is provided with an upper connecting plate 5 and a lower connecting plate 6. The upper connecting plate 5 is fixed to the upper end of the guide post 4, and the lower connecting plate 6 is fixed to the lower end of the guide post 4. One end of the elastic element 2 acts elastically on the upper connecting plate 5, and the other end acts elastically on the linear bearing 3.

[0027] In this embodiment, the upper connecting plate 5 and the lower connecting plate 6 are respectively provided with fixing through holes, and the upper and lower ends of the guide post 4 are respectively inserted through the fixing through holes and fixed to the upper connecting plate 5 and the lower connecting plate 6 by fasteners.

[0028] The upper connecting plate 5 and the lower connecting plate 6 are respectively provided with connecting plate fixing holes 7 for fixed assembly.

[0029] In this embodiment, the upper connecting plate 5 and the lower connecting plate 6 are respectively provided with connecting plate fixing holes 7 on the rear side and the left and right outer sides, so that the upper connecting plate 5 and the lower connecting plate 6 can be fixedly assembled through the connecting plate fixing holes 7.

[0030] The connecting bracket 1 is provided with a bracket fixing hole 1.1 and a connecting bracket assembly hole 1.2. The laser welding head is provided with a welding head fixing hole 11.1. The bracket fixing hole 1.1 and the welding head fixing hole 11.1 correspond to each other and are fixedly engaged by fasteners. The linear bearing 3 is provided with a connecting column 3.1 and is assembled on the connecting bracket assembly hole 1.2 through the connecting column 3.1.

[0031] The linear bearing 3 is provided with an elastic fitting post 3.2, and the elastic element 2 acts elastically on the elastic fitting post 3.2.

[0032] A positioning step 3.3 is provided between the connecting post 3.1 and the elastic fitting post 3.2. A step fixing hole 3.4 is provided on the positioning step 3.3. A bracket fastening hole 1.3 is provided on the connecting bracket 1. The step fixing hole 3.4 and the bracket fastening hole 1.3 correspond to each other and are fixedly fitted together by fasteners.

[0033] In this embodiment, two guide posts 4 are provided, each fitted with an elastic element 2. Two linear bearings 3 are provided, each elastically guided and slid on the two guide posts 4 by the elastic elements 2, so that the connecting bracket 1 can smoothly achieve guided sliding. The two elastic elements 2 interact elastically with the two linear bearings 3, so that the connecting bracket 1 always slides elastically towards the downward connecting plate 6, thereby allowing the laser welding head to generate a certain elastic force at the workpiece to be welded when working, so as to reduce the moving resistance of the laser welding head and avoid scratches at the workpiece to be welded and collision damage to the laser welding head during movement.

[0034] The laser welding head includes a laser optical path module, a ball bearing 10, and a mounting base 11. The ball bearing 10 rolls on the bottom of the mounting base 11, and the laser optical path module is fixedly mounted on the top of the mounting base 11 and irradiates the ball bearing 10 with laser light.

[0035] In this embodiment, the laser beam is irradiated towards the ball bearing 10 using the laser optical path module, and the ball bearing 10 rolls along the workpiece to be welded. This effectively reduces the moving resistance during laser welding, making the welding process easier and smoother, ensuring welding quality, and preventing scratches caused by the ball bearing 10 contacting the workpiece to be welded. At the same time, the ball bearing 10 can focus the laser beam from the laser optical path module, making the laser energy more concentrated, thereby further improving the welding quality. In addition, it can effectively simplify the design of the laser welding fixture and reduce assembly process and production costs to a certain extent.

[0036] When the ball bearing 10 contacts the workpiece, under the interaction of forces, the linear bearing 3 can slide elastically on the guide post 4 through the elastic element 2, thereby ensuring that the ball bearing 10 can fit tightly with the workpiece to be welded, effectively avoiding the problem of laser welding not being able to be completed due to unevenness of the workpiece to be welded, and at the same time reducing the occurrence of incomplete welding during the laser welding process and improving the stability of laser welding.

[0037] The assembly base 11 has a cavity inside and a compressed air connection valve 16 on the outside. The compressed air connection valve 16 is connected to a compressed air supply end that supplies compressed air into the cavity. The ball bearing 10 rolls at the bottom of the assembly base 11 under the pressure of compressed air.

[0038] The mounting base 11 has several electrostatic air outlets 13.1 arranged in a ring around the outer periphery of the ball bearing 10. The electrostatic air connecting valve 17 is connected to an electrostatic air supply end that provides electrostatic air to the several electrostatic air outlets 13.1.

[0039] In this embodiment, compressed gas from the compressed gas supply end enters the cavity 14 through the compressed gas connection valve 16 and acts on the ball bearing 10, causing the ball bearing 10 to maintain pressure. This further ensures that the ball bearing 10 is in close contact with the workpiece to be welded. In addition, when the ball bearing 10 is squeezed, some gas is ejected through the gap between the ball bearing 10 and the mounting base 11. This can both cool the laser welding position of the workpiece by air jetting and lubricate the contact position between the ball bearing 10 and the workpiece to be welded by air jetting, thereby achieving a more effortless and smoother welding path. In addition, electrostatic air from the electrostatic air supply end is ejected through the electrostatic air connection valve 17 and several electrostatic air outlets 13.1 and acts on the workpiece. This can both cool the laser welding position of the workpiece by air jetting and achieve electrostatic laser welding, greatly improving the quality of laser welding.

[0040] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A ball-bearing laser welding device, comprising a support assembly and a laser welding head, characterized in that: The bracket assembly includes a connecting bracket (1), an elastic element (2), a linear bearing (3), and a guide post (4). The laser welding head is fixedly mounted on the connecting bracket (1). The elastic element (2) is sleeved on the guide post (4) and elastically connected to the linear bearing (3). The linear bearing (3) is elastically guided and slid on the guide post (4) through the elastic element (2). The connecting bracket (1) is fixedly connected to the linear bearing (3).

2. The ball-bearing laser welding device according to claim 1, characterized in that: The guide post (4) is provided with an upper connecting plate (5) and a lower connecting plate (6). The upper connecting plate (5) is fixed to the upper end of the guide post (4), and the lower connecting plate (6) is fixed to the lower end of the guide post (4). One end of the elastic element (2) acts elastically on the upper connecting plate (5), and the other end acts elastically on the linear bearing (3).

3. The ball-bearing laser welding device according to claim 2, characterized in that: The upper connecting plate (5) and the lower connecting plate (6) are respectively provided with connecting plate fixing holes (7) for fixed assembly.

4. The ball-bearing laser welding device according to claim 1, characterized in that: The connecting bracket (1) is provided with a bracket fixing hole (1.1) and a connecting bracket assembly hole (1.2). The laser welding head is provided with a welding head fixing hole (11.1). The bracket fixing hole (1.1) and the welding head fixing hole (11.1) correspond to each other and are fixedly engaged by fasteners. The linear bearing (3) is provided with a connecting column (3.1) and is assembled on the connecting bracket assembly hole (1.2) through the connecting column (3.1).

5. The ball-bearing laser welding device according to claim 4, characterized in that: The linear bearing (3) is provided with an elastic fitting column (3.2), and the elastic element (2) acts elastically on the elastic fitting column (3.2).

6. The ball-bearing laser welding apparatus according to claim 5, characterized in that: A positioning step (3.3) is provided between the connecting column (3.1) and the elastic fitting column (3.2). A step fixing hole (3.4) is provided on the positioning step (3.3). A bracket fastening hole (1.3) is provided on the connecting bracket (1). The step fixing hole (3.4) and the bracket fastening hole (1.3) correspond to each other and are fixedly fitted together by fasteners.

7. The ball-bearing laser welding apparatus according to claim 1, characterized in that: The laser welding head includes a laser optical path module, a ball (10), and a mounting base (11). The ball (10) rolls at the bottom of the mounting base (11), and the laser optical path module is fixedly mounted on the top of the mounting base (11) and irradiates the ball (10) with laser light.

8. The ball-bearing laser welding apparatus according to claim 7, characterized in that: The assembly base (11) has a cavity inside and a compressed air connection valve (16) on the outside. The compressed air connection valve (16) is connected to a compressed air supply end that supplies compressed air into the cavity. The ball bearing (10) rolls at the bottom of the assembly base (11) under the pressure of compressed air.

9. The ball-bearing laser welding apparatus according to claim 7, characterized in that: The mounting base (11) has a plurality of electrostatic air outlet holes (13.1) arranged in a ring around the outer periphery of the ball (10), and the electrostatic air connecting valve (17) is connected to an electrostatic air supply end that provides electrostatic air to the plurality of electrostatic air outlet holes (13.1).

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