Different-surface laser seal welding device and seal welding method

Abstract

The invention discloses a different-surface laser sealing and welding device and a sealing and welding method.The different-surface laser sealing and welding device comprises a base, two moving platforms are arranged above the base, each moving platform is provided with a lifting platform, and the ends, away from the moving platforms, of the lifting platforms are rotationally provided with clamping devices used for fixing sealing and welding products; the different-surface laser seal welding device further comprises a laser source, and during seal welding, laser emitted by the laser source acts on a seal welding product. The invention further discloses a different-surface laser seal welding method. According to the different-surface laser seal welding device and method, the distance between the laser source and the seal welding product is adjusted through the lifting platform and the movable platform, so that it is guaranteed that the distances from laser to all seal welding points of the seal welding product are consistent, then the seal welding depth is consistent, and laser seal welding is completed under the cooperation of the movable platform and the mechanical gripper. In the whole seal welding process, highly-automatic different-surface seal welding is achieved, the seal welding efficiency is high, and errors are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of laser sealing and welding, and in particular to a different-surface laser sealing and welding device and a sealing and welding method. Background Art

[0002] Laser sealing is a technology that uses a laser beam to heat and melt materials to achieve a closed connection between materials. Laser sealing generates high temperature at the welding joint by focusing a high-energy laser beam, melting the materials in the welding joint and forming a dense weld, thereby achieving a closed connection between materials.

[0003] In the prior art, the welding methods of laser welding products are mainly divided into two types: same-side welding and different-side welding. When the welding edge of the welding product is designed to be on the same side, it is necessary to manually adjust the position of the welding edge for welding. This welding method has the problems of low welding precision and low welding efficiency. At the same time, due to the same-side design, it further limits the related expansion design; when the welding edge of the welding product is designed to be different-side, it is necessary to manually adjust the different welding surfaces for welding, and it is also necessary to ensure that each side is in the same position of the laser through the fixture design. This welding method is less efficient. At the same time, due to the use of the fixture, the cost of welding is further increased. Summary of the invention

[0004] The purpose of the present invention is to provide a different-surface laser welding device and welding method, which are used to solve the technical problems in the prior art that the same-surface welding affects the design, the different-surface welding has low welding efficiency and high welding cost.

[0005] To achieve the above-mentioned purpose, an embodiment of the present invention provides a different-surface laser sealing device, including a base, two movable platforms are arranged above the base, each movable platform is provided with a lifting platform, and a clamping device for fixing the sealing product is rotatably arranged at one end of the lifting platform away from the movable platform; The heterogeneous laser sealing device also includes a laser source. During sealing, the laser emitted by the laser source acts on the sealed product.

[0006] In one of the preferred solutions of the present invention, the sealing product is detachably fixed on the clamping device.

[0007] In one of the preferred solutions of the present invention, the mobile platform moves in horizontal and vertical directions.

[0008] In one of the preferred solutions of the present invention, the clamping device is a mechanical gripper.

[0009] Based on the heterogeneous laser welding device disclosed in the present invention, the present invention also discloses a heterogeneous laser welding method, which comprises the following steps: Fix the sealing product on the clamping device; After the sealing and welding product is fixed, the lifting platform and the moving platform are adjusted according to the distance from the laser source to the sealing and welding product, and the laser sealing and welding is completed with the cooperation of the clamping device.

[0010] One of the preferred schemes of the present invention is that the method for adjusting the lifting platform and the mobile platform according to the distance from the laser source to the sealing product is: the lifting platform obtains a distance feedback signal from the laser source to the sealing product, and cooperates with the mobile platform according to the obtained signal to adjust the distance between the sealing product and the laser source until the distance from the laser to the sealing point of the sealing product is consistent.

[0011] In one of the preferred solutions of the present invention, the clamping device is coordinated as follows: during the sealing process, the sealing product is rotated by the clamping device.

[0012] In summary, the beneficial effects of the present invention are: 1. The heterogeneous laser welding device and method of the present invention adjusts the distance between the laser source and the welding product through the lifting platform and the mobile platform, thereby ensuring that the distance from the laser to each welding point of the welding product is consistent, thereby ensuring the consistent welding depth, and then completing the laser welding with the cooperation of the mobile platform and the mechanical gripper. The entire welding process realizes highly automated heterogeneous welding, with high welding efficiency and no errors.

[0013] 2. The out-of-plane laser welding device and method of the present invention uses an out-of-plane design and is not subject to the limitation of same-plane welding, that is, it uses the technical means of all-around welding and is not restricted by the design of single-sided welding, which greatly expands the design boundary.

[0014] 3. The non-uniform laser welding device of the present invention realizes accurate positioning of the welding product by using a mechanical gripper, and simultaneously completes the automatic welding of the product by using a mobile platform and a lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a welding sealing device according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the sealing edge of the sealing product in one embodiment of the present invention.

[0016] Among them, 1-base, 2-moving platform, 3-lifting platform, 4-clamping device, 5-sealing product, 6-laser source. DETAILED DESCRIPTION

[0017] The present invention provides a heterogeneous laser sealing device, including a base 1 for supporting the entire sealing device, two movable platforms 2 are arranged above the base 1, and the movable platforms 2 use screw transmission to achieve horizontal and vertical movement, thereby achieving horizontal and vertical movement of the sealing product 5.

[0018] Each mobile platform 2 is provided with a lifting platform 3, and the lifting platform 3 used here is a spiral lifting platform. The lifting platform 3 is used to realize the lifting and lowering of the sealing product 5, and cooperates with the mobile platform 2 to realize the distance adjustment between the sealing product 5 and the laser source 6 described below, so as to ensure that the distance from the laser to the sealing edge of the sealing product 5 is consistent, that is, to ensure that the distance from the laser to the sealing point is consistent, and then to ensure that the sealing depth is consistent, providing a strong guarantee for the quality of the subsequent sealing.

[0019] A clamping device 4 for fixing the welding product 5 is rotatably provided at one end of the lifting platform 3 away from the moving platform 2. The welding product 5 is located between the two clamping devices 4 and is detachably connected to the clamping devices 4. After the welding product 5 is completed, the welding product 5 is removed from the clamping device 4. The clamping device 4 is a mechanical gripper, and the welding product 5 can be positioned and installed on the mechanical gripper by pins. After the welding edge of part of the welding surface of the welding product 5 is completed, the welding product 5 is driven to rotate by rotating the clamping device 4, thereby completing the welding process of the remaining welding surfaces of the welding product 5.

[0020] The eccentric laser sealing device further comprises a laser source 6. During sealing, the laser emitted by the laser source 6 acts on the sealing product 5. The distance between the sealing product 5 and the laser source 6 is adjusted by the lifting platform 3 and the moving platform 2.

[0021] Working process: First, fix the two ends of the welding product 5 on the two clamping devices 4 respectively, and feed back the distance between the laser source 6 and the welding product 5 to the lifting platform 3. The lifting platform 3 adjusts the distance between the welding product 5 and the laser source 6 according to the feedback signal and with the cooperation of the mobile platform 2. During the whole welding process, the distance between the laser and the welding point needs to be continuously adjusted by the lifting platform 3 and the mobile platform 2 to ensure that the distance from the laser to each welding point is consistent, so as to ensure the consistent welding depth. After the welding of part of the welding surface of the welding product 5 is completed, the mechanical gripper is used to realize the rotation of the welding product 5, and then the welding operation of the remaining surfaces is carried out. The whole welding process is realized by the mutual cooperation of the lifting platform 3, the mobile platform 2 and the mechanical gripper.

[0022] A method for laser welding of different surfaces, based on a laser welding device for different surfaces, comprises the following steps: The sealing product 5 is fixed on the clamping device 4; specifically, the two ends of the sealing product 5 are detachably fixed on the two clamping devices 4, wherein the clamping device 4 is a mechanical gripper, and the clamping device 4 is selected to fix the sealing product 5, so as to achieve accurate positioning of the sealing product 5; After the sealing product 5 is fixed, the lifting platform 3 and the moving platform 2 are adjusted according to the distance from the laser source 6 to the sealing product 5, and the laser sealing is completed with the cooperation of the clamping device 4; specifically, after the sealing product 5 is fixed, the lifting platform 3 obtains the distance feedback signal from the laser source 6 to the sealing product 5, and cooperates with the moving platform 2 according to the obtained signal to adjust the distance between the sealing product 5 and the laser source 6. During the entire sealing process, the distance between the laser and the sealing point needs to be continuously adjusted by the lifting platform 3 and the moving platform 2 to ensure that the distance from the laser to each sealing point is consistent; when part of the sealing surface of the sealing product 5 is completed, the rotation of the sealing product 5 is realized by the mechanical gripper, and then the sealing operation of the remaining surfaces is carried out.

[0023] In summary, the heterogeneous laser welding device and method of the present invention are not restricted by single-sided welding of products, and can also complete heterogeneous welding efficiently and accurately.

[0024] Although the specific implementation of the present invention is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A laser welding device for different surfaces, characterized in that: It includes a base, two mobile platforms are arranged above the base, each of the mobile platforms is provided with a lifting platform, and a clamping device for fixing the sealing and welding product is rotatably arranged at one end of the lifting platform away from the mobile platform; The different-surface laser sealing device also includes a laser source. During sealing, the laser emitted by the laser source acts on the sealed product.

2. A laser welding device for different surfaces as claimed in claim 1, characterized in that: The sealing product is detachably fixed on the clamping device.

3. The laser welding device for different surfaces as claimed in claim 1, characterized in that: The mobile platform moves in horizontal and vertical directions.

4. The laser welding device for different surfaces as claimed in claim 1, characterized in that: The clamping device is a mechanical gripper.

5. A method for laser welding of different surfaces, characterized in that: Based on the heterogeneous laser welding device according to any one of claims 1 to 4, the heterogeneous laser welding method comprises the following steps: Fix the sealing product on the clamping device; After the sealing and welding product is fixed, the lifting platform and the moving platform are adjusted according to the distance from the laser source to the sealing and welding product, and the laser sealing and welding is completed with the cooperation of the clamping device.

6. A method for laser welding of different surfaces as claimed in claim 5, characterized in that: The method for adjusting the lifting platform and the mobile platform according to the distance from the laser source to the sealing product is as follows: the lifting platform obtains a distance feedback signal from the laser source to the sealing product, and cooperates with the mobile platform according to the obtained signal to adjust the distance between the sealing product and the laser source until the distance from the laser to the sealing point of the sealing product is consistent.

7. A method for laser welding of different surfaces as claimed in claim 5, characterized in that: The clamping device is cooperated in that: during the sealing process, the sealing product is rotated by the clamping device.

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