A laser welding fixture

Abstract

The utility model belongs to laser welding technical field especially relates to a kind of laser welding tool, including base, two groups of limiting mechanisms are correspondingly equipped in the both sides of base, and accommodating gap exists between two groups of limiting mechanisms, and driving mechanism for driving two groups of limiting mechanisms to be close to each other and away from each other is equipped on base;The limiting mechanism includes limiting frame and compression member, the lifting plate of being equipped with liftable is set up on the limiting frame, the side of the lifting plate towards accommodating gap is equipped with inclined surface part, the other side is equipped with the sliding portion of the sliding cooperation with limiting frame side wall, the guiding wheel of being horizontally rotatable is equipped below the lifting plate.The laser welding tool can be applicable to the laser welding operation of strip plate piece, and can always stably limit the end of plate piece and the good limiting effect of the place of adhering welding during plate piece welding process, and it is favorable to improve the welding quality and welding efficiency of plate piece.

Description

Technical Field

[0001] This utility model belongs to the field of laser welding technology, and in particular relates to a laser welding fixture. Background Technology

[0002] Laser welding, as a highly efficient and precise joining technology, has been widely used in the manufacturing process of metal structural components, especially in butt welding or lap welding of strip plates, where it has significant advantages. However, in actual production, continuous laser welding between two strip plates still faces many technical challenges, particularly when the welding path is long or the plate size is large, making it difficult to guarantee the stability of welding quality. Currently, traditional welding fixtures mostly use rigid clamps or simple positioning devices to fix the strip plates. These fixtures mainly rely on mechanical clamping or edge positioning, making it difficult to achieve continuous and uniform positioning of the strip plates along their length during welding. Especially when the welding path is long, warping or misalignment of the weld joint is prone to occur, causing the welding path to deviate from the preset trajectory, affecting the quality and efficiency of continuous welding of strip plates. Utility Model Content

[0003] In view of this, the present invention aims to propose a laser welding fixture to solve the problem that the existing laser welding fixture has poor limiting effect when welding strip plates, which affects the welding quality and efficiency of strip plate connections.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A laser welding fixture includes a base with two sets of limiting mechanisms on both sides, with a clearance between the two sets of limiting mechanisms. The base is equipped with a driving mechanism for moving the two sets of limiting mechanisms closer together and further apart. Each limiting mechanism includes a limiting frame and a clamping component. The limiting frame has a liftable lifting plate with an inclined surface on one side facing the clearance and a sliding part on the other side that slides against the side wall of the limiting frame. A horizontally rotatable guide wheel is located below the lifting plate, with the inclined surface facing downwards towards the guide wheel. A guide groove is provided on the outer surface of the guide wheel. One end of the clamping component is horizontally rotatably mounted on the limiting frame, and the other end has a liftable pressure roller with a clearance between the pressure roller and the base.

[0005] Furthermore, the lifting plate is vertically slidably mounted on the limiting frame via guide columns. The limiting frame is provided with guide sleeves that cooperate with the guide columns. An elastic element is provided between the lifting plate and the limiting frame. One end of the elastic element abuts against the lifting plate, and the other end abuts against the limiting frame.

[0006] Furthermore, at least two guide columns are spaced apart along the length of the lifting plate, and the guide sleeves are arranged in a one-to-one correspondence with the guide columns.

[0007] Furthermore, the elastic element is a compression spring, which is sleeved on the guide post.

[0008] Furthermore, the clamping component is rotatably mounted on the guide sleeve, and the guide sleeve is provided with a locking nut for limiting and fixing the clamping component at a position corresponding to the upper part of the clamping component. The guide sleeve is provided with an external thread that mates with the locking nut.

[0009] Furthermore, the clamping member is provided with an adjusting bolt, and the pressure roller is rotatably mounted on the adjusting bolt via a wheel frame.

[0010] Furthermore, the sliding part is provided with a roller, which is rotatably mounted on the sliding part.

[0011] Furthermore, the sliding part includes a horizontal end and a vertical end, the roller is located at the vertical end of the sliding part, and the horizontal end of the sliding part is connected to the lifting plate.

[0012] Furthermore, the guide wheel is rotatably mounted on the lifting plate via a rotating shaft, and a thrust bearing is provided between the guide wheel and the lifting plate.

[0013] Compared with existing technologies, the laser welding fixture described in this utility model has the following advantages: The laser welding fixture described in this utility model is applicable to laser welding of strip-shaped plates. It provides stable and effective positioning of the plate ends and weld joints throughout the welding process, thereby improving welding quality and efficiency. By installing two sets of positioning mechanisms on the base and driving them with a drive mechanism, the positioning mechanisms on this welding fixture can be used to position plates of different widths, thus enhancing its versatility. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the structure of a laser welding fixture according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the limiting mechanism in a laser welding fixture according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the lifting plate in a laser welding fixture according to an embodiment of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Base; 2. Drive mechanism; 3. Limiting frame; 4. Clamping component; 5. Guide column; 6. Locking nut; 7. Adjusting bolt; 8. Plate; 9. Limiting nut; 10. Guide sleeve; 11. Lifting plate; 12. Inclined part; 13. Sliding part; 14. Pressure roller; 15. Wheel frame; 16. Guide wheel; 17. Guide groove; 18. Roller; 19. Compression spring; 20. Thrust bearing. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] A laser welding fixture, such as Figures 1 to 3As shown, the device includes a base 1, with two sets of limiting mechanisms on both sides of the base 1. There is a accommodating gap between the two sets of limiting mechanisms. The base 1 is equipped with a driving mechanism 2 for driving the two sets of limiting mechanisms to move closer and further apart. The limiting mechanism includes a limiting frame 3 and a pressing member 4. The limiting frame 3 is equipped with a liftable lifting plate 11. The lifting plate 11 has an inclined surface 12 on one side facing the accommodating gap, and a sliding part 13 on the other side that slides with the side wall of the limiting frame 3. A horizontally rotatable guide wheel 16 is provided below the lifting plate 11. The inclined surface 12 is inclined downwards towards the guide wheel 16. A guide groove 17 is provided on the outer ring surface of the guide wheel 16. One end of the pressing member 4 is horizontally rotatably mounted on the limiting frame 3, and the other end is equipped with a liftable pressure wheel 14. There is a passage gap between the pressure wheel 14 and the base 1 that accompanies the plate 8. The passage gap is connected to the accommodating gap.

[0021] Specifically, the drive mechanism 2 can be a conventional drive such as a linear module or an electric slide table. The limit frame 3 of the limit mechanism can be installed and fixed on the slide table of the linear module by conventional means such as screws, so as to drive the two limit mechanisms to move closer or further apart, thereby enabling the two limit mechanisms to clamp and limit the two plates 8 of different widths, which facilitates the subsequent welding operation of the laser welder at the joint of the two plates 8.

[0022] In practical applications, the guide wheel 16 is conventionally mounted on the lifting plate 11 via a rotating shaft, and a thrust bearing 20 is provided between the guide wheel 16 and the lifting plate 11. By setting the thrust bearing 20, the guide groove 17 on the guide wheel 16 can stably engage with the side end face and top surface of the plate 8. The guide wheel 16 not only provides good guidance for the plate 8 and reduces wear on the surface of the plate 8 during movement, but also, under the action of the lifting plate 11, presses the end of the plate 8 to prevent movement during movement and welding, thus improving the welding accuracy and efficiency of the plate 8. Furthermore, the pressure roller 14 on the clamping member 4 can also press and limit the contact area between the two plates 8, further improving the stability of the plate 8 during welding and movement. Combined with the limiting effect of the guide wheel 16, the overall effectiveness of this welding fixture is further enhanced.

[0023] Preferably, the lifting plate 11 is vertically slidably mounted on the limiting frame 3 via the guide post 5. The limiting frame 3 is provided with a guide sleeve 10 that cooperates with the guide post 5. An elastic element is provided between the lifting plate 11 and the limiting frame 3, with one end of the elastic element abutting the lifting plate 11 and the other end abutting the limiting frame 3. For example, the guide sleeve 10 is fixed on the limiting frame 3, and the elastic element is a compression spring 19, which is sleeved on the guide post 5. Alternatively, other suitable elements, such as disc springs, can be used as the elastic element, and they can be installed between the lifting plate 11 and the limiting frame 3 in other suitable ways, which will not be elaborated here.

[0024] In practical applications, the guide post 5 has a detachable limiting nut 9 at one end that passes through the guide sleeve 10, and the guide post 5 has an external thread that mates with the limiting nut 9. Those skilled in the art can select other suitable guide posts 5 according to actual needs to achieve the guiding and limiting functions of lifting the lifting plate 11, which will not be elaborated here.

[0025] In its initial state, the restoring force of the compression spring 19 can push the lifting plate 11 downwards until the limit nut 9 presses against the top of the guide sleeve 10 to limit the guide wheel 16 and the lifting plate 11.

[0026] Then, as the limiting mechanism moves towards the middle of the base 1 along with the drive mechanism 2, the inclined surface 12 on the lifting plate 11 will engage with the end of the plate 8 first, and push the lifting plate 11 up along the inclined surface 12. During the upward movement of the lifting plate 11, the compression spring 19 is squeezed until the plate 8 engages with the guide groove 17 on the guide wheel 16. At this time, the guide wheel 16 can press the plate 8 under the action of the return spring force of the compression spring 19.

[0027] Then, as the limiting mechanism continues to move, the guide wheels 16 on the two limiting mechanisms can cooperate to clamp and limit the two plates 8. At this time, the operator can rotate the clamping part 4 and adjust the height of the pressure wheel 14 to press and limit the contact point of the two plates 8.

[0028] Finally, the operator can use laser welding equipment to weld the joint of the two plates 8, and move the welding fixture along the length of the plates 8 during the welding process, or slowly pass the two plates 8 through the welding fixture during the welding process to achieve the welding of the plates 8.

[0029] Optionally, at least two guide posts 5 are spaced apart along the length of the lifting plate 11, and the guide sleeves 10 are arranged in a one-to-one correspondence with the guide posts 5. For example, two, three, or more guide posts 5 can be spaced apart to improve the stability of the lifting plate 11. Similarly, two, three, or more guide wheels 16 can also be spaced apart to improve the guiding effect of the guide wheels 16 on the plate 8.

[0030] Preferably, the clamping member 4 is rotatably mounted on the guide sleeve 10. The guide sleeve 10 is provided with a locking nut 6 for limiting and fixing the clamping member 4 at a position corresponding to the upper part of the clamping member 4. The guide sleeve 10 is provided with an external thread that mates with the locking nut 6. Specifically, the clamping member 4 is provided with an assembly hole that mates with the guide sleeve 10. By providing the locking nut 6, when the operator rotates and adjusts the clamping member 4, the locking nut 6 can be screwed to fix it, and the locking nut 6 and the limiting frame 3 are used to clamp and fix the clamping member 4, thereby ensuring that the clamping member 4 can remain stable.

[0031] In practical applications, the clamping component 4 is equipped with an adjusting bolt 7, and the pressure roller 14 is rotatably mounted on the adjusting bolt 7 via a wheel frame 15. For example, the clamping component 4 has a threaded hole that mates with the adjusting bolt 7. The wheel frame 15 can be rotatably mounted on the adjusting bolt 7 via a conventional method such as a rotating shaft, and the pressure roller 14 can also be rotatably mounted on the wheel frame 15 via a rotating shaft. By providing a rotatable pressure roller 14 on the clamping component 4, the wear of the pressure roller 14 on the surface of the plate 8 can also be reduced.

[0032] Preferably, the sliding part 13 is provided with a roller 18, which is rotatably mounted on the sliding part 13. Exemplarily, the roller 18 can also be rotatably mounted on the sliding part 13 by a conventional means such as a rotating shaft. By rotatably mounting the roller 18, it is beneficial to reduce the friction between the sliding part 13 and the limiting frame 3, and facilitate the plate 8 to push the lifting plate 11 up along the inclined surface 12 of the lifting plate 11 until the plate 8 engages with the guide groove 17 on the guide wheel 16.

[0033] Preferably, the sliding part 13 includes a horizontal end and a vertical end, with the roller 18 located at the vertical end of the sliding part 13, and the horizontal end of the sliding part 13 fixedly connected to the lifting plate 11. Specifically, the sliding part 13 is a T-shaped structural component, which has better structural strength and stability. The lifting plate 11 can be stably raised and lowered under the combined action of the sliding part 13 slidingly engaging with the limiting frame 3 and the guide column 5 slidingly engaging with the guide sleeve 10, facilitating the plate 8 to push the lifting plate 11 up and down and engage with the guide wheel 16.

[0034] The laser welding fixture described in this utility model is applicable to laser welding of strip-shaped plates. It provides stable and effective positioning of the plate ends and weld joints throughout the welding process, thereby improving welding quality and efficiency. By installing two sets of positioning mechanisms on the base and driving them with a drive mechanism, the positioning mechanisms on this welding fixture can be used to position plates of different widths, thus enhancing its versatility.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser welding fixture, characterized in that: The device includes a base (1), on which two sets of limiting mechanisms are provided on both sides, with a accommodating gap between the two sets of limiting mechanisms. The base (1) is provided with a driving mechanism (2) for driving the two sets of limiting mechanisms to move closer and further apart. The limiting mechanism includes a limiting frame (3) and a pressing member (4). The limiting frame (3) is provided with a lifting plate (11) that can be raised and lowered. The lifting plate (11) has a beveled part (12) on one side facing the accommodating gap, and a sliding part (13) that slides with the side wall of the limiting frame (3) on the other side. A horizontally rotatable guide wheel (16) is provided below the lifting plate (11). The beveled part (12) is inclined downwards towards the guide wheel (16), and a guide groove (17) is provided on the outer ring surface of the guide wheel (16). One end of the pressing member (4) is horizontally rotatably mounted on the limiting frame (3), and the other end is provided with a lifting pressure wheel (14).

2. The laser welding fixture according to claim 1, characterized in that: The lifting plate (11) is vertically slidably mounted on the limiting frame (3) via the guide column (5). The limiting frame (3) is provided with a guide sleeve (10) that cooperates with the guide column (5). An elastic element is provided between the lifting plate (11) and the limiting frame (3). One end of the elastic element abuts against the lifting plate (11), and the other end abuts against the limiting frame (3).

3. The laser welding fixture according to claim 2, characterized in that: At least two guide columns (5) are provided at intervals along the length of the lifting plate (11), and the guide sleeves (10) are provided in a one-to-one correspondence with the guide columns (5).

4. A laser welding fixture according to claim 2 or 3, characterized in that: The elastic element is a compression spring (19), which is sleeved on the guide post (5).

5. A laser welding fixture according to claim 2 or 3, characterized in that: The clamping member (4) is rotatably mounted on the guide sleeve (10). The guide sleeve (10) is provided with a locking nut (6) for limiting and fixing the clamping member (4) at a position above the clamping member (4). The guide sleeve (10) is provided with an external thread that cooperates with the locking nut (6).

6. The laser welding fixture according to claim 1, characterized in that: The clamping member (4) is provided with an adjusting bolt (7), and the pressure roller (14) is rotatably mounted on the adjusting bolt (7) via a wheel frame (15).

7. The laser welding fixture according to claim 1, characterized in that: The sliding part (13) is provided with a roller (18), which is rotatably mounted on the sliding part (13).

8. A laser welding fixture according to claim 7, characterized in that: The sliding part (13) includes a horizontal end and a vertical end. The roller (18) is located at the vertical end of the sliding part (13), and the horizontal end of the sliding part (13) is connected to the lifting plate (11).

9. A laser welding fixture according to claim 1, characterized in that: The guide wheel (16) is rotatably mounted on the lifting plate (11) via a rotating shaft, and a thrust bearing (20) is provided between the guide wheel (16) and the lifting plate (11).

Images