Rotary laser welding post-welding detection equipment

Abstract

The utility model relates to the technical field of lithium battery manufacturing, in particular to rotary laser welding post-welding detection equipment which comprises a three-axis gantry robot and further comprises an electromagnet, a carrying trolley, a detection camera and an electric rotary table, the three-axis gantry robot is fixed to the ground, and the electromagnet is embedded in the position, below the three-axis gantry robot, of the ground; the top of the electromagnet is used for parking a carrying trolley, and the top of the carrying trolley is used for placing a welded battery cell module; an electric rotating table and a detection camera are sequentially connected to the execution tail end of the three-axis gantry robot, the detection camera horizontally rotates through the electric rotating table, and the detection camera reciprocates and translates in the circumferential direction of the battery cell module through the three-axis gantry robot; according to the rotary laser welding post-welding detection equipment, the problem that light interference is generated when a plurality of visual systems work at the same time in existing production equipment is solved through the design of a single camera, and the detection precision and the detection quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery manufacturing technology, and in particular to a rotary laser welding post-weld inspection device. Background Technology

[0002] Against the backdrop of the rapid development of the new energy industry, laser welding technology, as one of the key technologies in the lithium battery production process, has been widely used. Especially in the welding process of end-side plate modules, laser welding is used to ensure a strong connection between the various components of the module. The quality of the weld is crucial to the overall performance of the product; it not only affects the structural strength of the module but also relates to the safety and reliability of the entire lithium battery.

[0003] In traditional production equipment, multiple vision systems are usually used to visually inspect welds at different locations. For a conventional vision system, please refer to the module shell weld and module size inspection device disclosed in Publication (Announcement) No.: CN215909904U.

[0004] In actual production, simultaneous inspection by multiple vision systems can cause light interference, which affects the quality of image capture and consequently the accuracy of weld inspection. To solve the above technical problems, it is necessary to provide a rotary laser welding post-weld inspection device. Utility Model Content

[0005] In view of this, this utility model proposes a rotary laser welding post-weld inspection device, which reduces the light interference caused by multiple vision systems working simultaneously in existing production equipment through a single-camera design, thereby improving inspection accuracy and quality.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides a rotary laser welding post-weld inspection device, including a three-axis gantry robot, an electromagnet, a transport trolley, an inspection camera, and an electric rotary table.

[0008] The three-axis gantry robot is fixed to the ground, and the electromagnet is embedded in the ground below the three-axis gantry robot;

[0009] The top of the electromagnet is used to park the transport trolley, and the top of the transport trolley is used to place the welded battery cell module.

[0010] The electric rotary table and the detection camera are sequentially connected to the end effector of the three-axis gantry robot. The detection camera rotates horizontally via the electric rotary table and reciprocates around the battery cell module via the three-axis gantry robot.

[0011] Based on the above technical solutions, preferably, the electric rotary table includes a motor frame, a motor, and a rotary table, wherein,

[0012] The motor frame is fixedly connected to the end effector of the three-axis gantry robot at its side end;

[0013] The motor is fixed on the motor frame;

[0014] The rotary table is located below the motor frame and fixed on the output end of the motor. The rotary table is the output end of the electric rotary table.

[0015] Based on the above technical solutions, preferably, the motor frame is provided with a U-shaped opening, wherein,

[0016] The output shaft of the motor passes through the U-shaped opening from top to bottom.

[0017] Based on the above technical solutions, a preferred embodiment also includes an arc-shaped cover, wherein...

[0018] Two arc-shaped covers are fixed on the output end of the electric rotary table. The two arc-shaped covers are coaxially arranged, and the detection camera is centrally located between the two arc-shaped covers.

[0019] A visual channel is reserved between the two arc-shaped covers, and the inspection camera collects the weld information of the side of the battery cell module through the visual channel.

[0020] Based on the above technical solutions, preferably, a black light-absorbing coating is provided on the inner arc surface of the arc-shaped cover.

[0021] Based on the above technical solutions, preferably, the three-axis gantry robot includes a gantry frame, an X-axis electric slide rail, a Y-axis electric slide rail, and a Z-axis electric slide rail, wherein...

[0022] The gantry frame is fixed to the ground;

[0023] The X-axis electric slide rail is fixed to the top of the gantry along the X-axis;

[0024] The Y-axis electric slide rail is fixed along the Y-axis to the output end of the X-axis electric slide rail;

[0025] The Z-axis electric slide rail is fixed along the Z-axis to the output end of the Y-axis electric slide rail;

[0026] The output end of the Z-axis electric slide rail is set as the execution end of the three-axis gantry robot.

[0027] Based on the above technical solutions, preferably, the Y-axis electric slide rail includes a support plate, an electric linear module, and a bracket, wherein...

[0028] The tray is fixedly connected to the output end of the X-direction electric slide rail;

[0029] The electric linear module is fixed to the top of the tray;

[0030] The bracket is fixed on the output end of the electric linear module, and the bracket is set as the output end of the Y-axis electric slide rail.

[0031] Based on the above technical solutions, preferably, the Y-axis electric slide rail further includes a guide rail and a slider, wherein,

[0032] The guide rail is fixed to the top of the tray and is arranged parallel to the electric linear module;

[0033] The slider is slidably mounted on the guide rail, and the top of the slider is fixedly connected to the bottom of the bracket.

[0034] Based on the above technical solutions, preferably, the electromagnet has a plate-like structure, wherein...

[0035] The top surface of the electromagnet is flush with the ground.

[0036] Based on the above technical solutions, preferably, the outer sides of the wheels of the transport vehicle are fitted with iron rings, wherein,

[0037] The iron ring is magnetically connected to the electromagnet.

[0038] This utility model provides a rotary laser welding post-weld inspection device that, compared to existing technologies, has the following advantages:

[0039] Beneficial effects:

[0040] (1) By setting up a three-axis gantry robot to drive the inspection camera to reciprocate around the battery cell module, and by setting the inspection camera to rotate horizontally on the three-axis gantry robot to change the lens orientation of the inspection camera, a single-camera design is achieved, which reduces the light interference problem caused by multiple vision systems working at the same time in existing production equipment, and improves the inspection accuracy and inspection quality.

[0041] (2) By setting the top of the electromagnet to park the transport trolley, it is easy to park the transport trolley stably, prevent the transport trolley from slipping, and help protect the camera from collision when it moves.

[0042] (3) By setting the detection camera in the center between the two arc-shaped covers, it is easy to block the ambient light from the outside world through the arc-shaped covers, thereby reducing the interference of the outside light on the detection camera and improving the detection accuracy and detection quality.

[0043] (4) By setting a black light-absorbing coating on the inner arc surface of the arc cover, the inner arc surface of the arc cover is less reflective, which further reduces the influence of ambient light on the detection camera lens, making the detection accuracy and detection quality higher. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a perspective view of a rotary laser welding post-weld inspection device according to the present invention.

[0046] Figure 2 for Figure 1 Enlarged view of point A;

[0047] Figure 3 for Figure 1 Enlarged view of point B;

[0048] In the diagram: 1. Three-axis gantry robot; 2. Electromagnet; 3. Transport trolley; 4. Inspection camera; 5. Electric rotary table; 6. Arc-shaped cover; 7. Battery cell module; 11. Gantry frame; 12. X-axis electric slide rail; 13. Y-axis electric slide rail; 14. Z-axis electric slide rail; 31. Iron ring; 51. Motor frame; 52. Motor; 53. Rotary table; 131. Pallet; 132. Electric linear module; 133. Bracket; 134. Guide rail; 135. Slider; 601. Vision channel; 5101. U-shaped opening. Detailed Implementation

[0049] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0050] like Figure 1-3 As shown, the present invention provides a rotary laser welding post-weld inspection device, which includes a three-axis gantry robot 1, an electromagnet 2, a transport trolley 3, an inspection camera 4, and an electric rotary table 5.

[0051] The three-axis gantry robot 1 is fixed to the ground, and an electromagnet 2 is embedded in the ground below the robot 1. The top of the electromagnet 2 is used to park the transport trolley 3, and the top of the transport trolley 3 is used to place the welded battery cell module 7. An electric rotary table 5 and a detection camera 4 are connected in sequence to the end effector of the three-axis gantry robot 1. The detection camera 4 rotates horizontally via the electric rotary table 5, and the detection camera 4 reciprocates around the circumference of the battery cell module 7 via the three-axis gantry robot 1.

[0052] During inspection, the battery cell module 7 is fixed on top of the transport trolley 3. The transport trolley 3 is then pushed to the top of the electromagnet 2. Activating the electromagnet 2 causes it to generate magnetic force, attracting and fixing the transport trolley 3, ensuring its stable placement. The three-axis gantry robot 1 includes XYZ axes. Through the coordination of these three axes and the rotation of the lens, the inspection camera 4 inspects the weld seams on each of the four sides of the battery cell module 7. This structure achieves a single-camera design, reducing light interference issues caused by multiple vision systems operating simultaneously in existing production equipment, and improving inspection accuracy and quality.

[0053] In the above-mentioned rotary laser welding post-weld inspection equipment, the electric rotary table 5 includes a motor frame 51, a motor 52, and a rotary table 53.

[0054] The motor frame 51 is L-shaped, with its side ends fixedly connected to the end effector of the three-axis gantry robot 1. The motor 52 is vertically fixed to the motor frame 51, and a U-shaped opening 5101 is vertically connected to the motor frame 51, through which the output shaft of the motor 52 passes vertically. A rotary table 53 is located below the motor frame 51 and fixed to the output end of the motor 52; the rotary table 53 serves as the output end of the electric rotary table 5.

[0055] The U-shaped opening 5101 facilitates the installation of the motor 52. During testing, the motor 52 drives the rotary table 53 to rotate, thereby adjusting the lens orientation of the testing camera 4 so that the testing camera 4 can collect the weld information of the four sides of the battery cell module 7 one by one.

[0056] In addition, two arc-shaped covers 6 are fixed on the output end of the electric rotary table 5. The two arc-shaped covers 6 are coaxially arranged, and the inspection camera 4 is centrally located between the two arc-shaped covers 6. A vision channel 601 is reserved between the two arc-shaped covers 6, and the inspection camera 4 collects the weld information of the side end of the battery cell module 7 through the vision channel 601.

[0057] The curved cover 6 can block ambient light, reducing interference from external light on the inspection camera 4 and improving inspection accuracy and quality. Furthermore, a black light-absorbing coating is applied to the inner curved surface of the curved cover 6. This coating can be any one of a black matte paint coating, a carbon nanotube coating, a black velvet coating, or a black rubber coating. This coating makes the inner curved surface of the curved cover 6 less reflective, further reducing the impact of ambient light on the lens of the inspection camera 4, resulting in higher inspection accuracy and quality.

[0058] In the aforementioned rotary laser welding post-weld inspection equipment, the three-axis gantry robot 1 includes a gantry frame 11, an X-axis electric slide rail 12, a Y-axis electric slide rail 13, and a Z-axis electric slide rail 14.

[0059] The gantry frame 11 is fixed to the ground. An X-axis electric slide rail 12 is fixed to the top of the gantry frame 11 along the X-axis. A Y-axis electric slide rail 13 is fixed to the output end of the X-axis electric slide rail 12 along the Y-axis. A Z-axis electric slide rail 14 is fixed to the output end of the Y-axis electric slide rail 13 along the Z-axis. The output end of the Z-axis electric slide rail 14 serves as the end effector of the three-axis gantry robot 1.

[0060] During inspection, the X-axis electric slide rail 12 is used to realize the X-axis translation of the inspection camera 4, the Y-axis electric slide rail 13 is used to realize the Y-axis translation of the inspection camera 4, and the Z-axis electric slide rail 14 is used to realize the Z-axis lifting and lowering of the inspection camera 4. The position change of the inspection camera 4 is realized through this three-axis structure.

[0061] In this three-axis gantry robot 1, the Y-axis electric slide rail 13 includes a support plate 131, an electric linear module 132, a bracket 133, a guide rail 134, and a slider 135.

[0062] The tray 131 is fixedly connected to the output end of the X-axis electric slide rail 12. The electric linear module 132 is fixed to the top of the tray 131. The bracket 133 is fixed to the output end of the electric linear module 132, and the bracket 133 is set as the output end of the Y-axis electric slide rail 13. The guide rail 134 is fixed to the top of the tray 131 and is arranged parallel to the electric linear module 132. The slider 135 is slidably disposed on the guide rail 134, and the top of the slider 135 is fixedly connected to the bottom of the bracket 133.

[0063] During translation, the electric linear module 132 drives the support plate 131 to translate along the Y direction, while the slider 135 slides along the guide rail 134. The electric linear module 132 and the guide rail 134 achieve a dual-rail design, enabling the detection camera 4 to translate smoothly in the Y direction.

[0064] In the aforementioned rotary laser welding post-weld inspection equipment, the electromagnet 2 has a plate-like structure, with its top surface flush with the ground to facilitate the movement of the transport trolley 3 onto it. Iron rings 31 are fitted around the outer sides of the wheels of the transport trolley 3, and these iron rings 31 are magnetically connected to the electromagnet 2 and fixedly connected to the frame of the transport trolley 3.

[0065] After the transport trolley 3 moves onto the electromagnet 2, the iron ring 31 is attracted by the magnetic force of the electromagnet 2, and the transport trolley 3 is stably parked on the electromagnet 2.

[0066] The method of using the rotary laser welding post-weld inspection equipment of this utility model is as follows:

[0067] The welded battery cell module 7 is fixed on top of the transport trolley 3, and then the transport trolley 3 is pushed to the top of the electromagnet 2. After the electromagnet 2 is activated, it generates magnetic force to attract and fix the transport trolley 3. The three-axis gantry robot 1 and the electric rotary table 5 work together to allow the inspection camera 4 to inspect the welds on the four sides of the battery cell module 7 one by one. After the inspection is completed, the inspection camera 4 is parked on one side above the battery cell module 7, the electromagnet 2 is de-energized, and then the transport trolley 3 is pushed out of the three-axis gantry robot 1.

[0068] 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 rotary laser welding post-weld inspection device, comprising a three-axis gantry robot (1), characterized in that: It also includes an electromagnet (2), a transport trolley (3), a detection camera (4), and an electric rotary table (5), among which, The three-axis gantry robot (1) is fixed on the ground, and the electromagnet (2) is embedded in the ground below the three-axis gantry robot (1); The top of the electromagnet (2) is used to park the transport trolley (3), and the top of the transport trolley (3) is used to place the welded battery cell module (7). The electric rotary table (5) and the detection camera (4) are sequentially connected to the execution end of the three-axis gantry robot (1). The detection camera (4) rotates horizontally through the electric rotary table (5) and the detection camera (4) reciprocates around the battery cell module (7) through the three-axis gantry robot (1).

2. The rotary laser welding post-weld inspection equipment as described in claim 1, characterized in that: The electric rotary table (5) includes a motor frame (51), a motor (52), and a rotary table (53), wherein, The motor frame (51) is fixedly connected to the end effector of the three-axis gantry robot (1) at its side end; The motor (52) is fixed on the motor frame (51); The rotary table (53) is located below the motor frame (51) and fixed on the output end of the motor (52). The rotary table (53) is the output end of the electric rotary table (5).

3. The rotary laser welding post-weld inspection equipment as described in claim 2, characterized in that: The motor frame (51) is provided with a U-shaped opening (5101), wherein, The output shaft of the motor (52) passes through the U-shaped opening (5101) vertically.

4. The rotary laser welding post-weld inspection equipment as described in claim 1, characterized in that: It also includes an arc-shaped cover (6), in which, Two arc-shaped covers (6) are fixed on the output end of the electric rotary table (5), the two arc-shaped covers (6) are coaxially arranged, and the detection camera (4) is centrally arranged between the two arc-shaped covers (6); A visual channel (601) is reserved between the two arc-shaped covers (6), and the detection camera (4) collects the weld information of the side end of the battery cell module (7) through the visual channel (601).

5. The rotary laser welding post-weld inspection equipment as described in claim 4, characterized in that: The inner arc surface of the arc-shaped cover (6) is provided with a black light-absorbing coating.

6. The rotary laser welding post-weld inspection equipment as described in claim 1, characterized in that: The three-axis gantry robot (1) includes a gantry frame (11), an X-axis electric slide rail (12), a Y-axis electric slide rail (13), and a Z-axis electric slide rail (14), wherein, The gantry frame (11) is fixed to the ground; The X-direction electric slide rail (12) is fixed to the top of the gantry frame (11) along the X direction; The Y-axis electric slide rail (13) is fixed along the Y-axis to the output end of the X-axis electric slide rail (12); The Z-axis electric slide rail (14) is fixed along the Z-axis to the output end of the Y-axis electric slide rail (13); The output end of the Z-axis electric slide rail (14) is set as the execution end of the three-axis gantry robot (1).

7. The rotary laser welding post-weld inspection equipment as described in claim 6, characterized in that: The Y-axis electric slide rail (13) includes a support plate (131), an electric linear module (132), and a bracket (133), wherein, The tray (131) is fixedly connected to the output end of the X-direction electric slide rail (12); The electric linear module (132) is fixed to the top of the tray (131); The bracket (133) is fixed on the output end of the electric linear module (132), and the bracket (133) is set as the output end of the Y-axis electric slide rail (13).

8. The rotary laser welding post-weld inspection equipment as described in claim 7, characterized in that: The Y-axis electric slide rail (13) further includes a guide rail (134) and a slider (135), wherein, The guide rail (134) is fixed to the top of the tray (131) and is arranged parallel to the electric linear module (132); The slider (135) is slidably disposed on the guide rail (134), and the top of the slider (135) is fixedly connected to the bottom of the bracket (133).

9. The rotary laser welding post-weld inspection equipment as described in claim 1, characterized in that: The electromagnet (2) has a plate-like structure, wherein, The top surface of the electromagnet (2) is flush with the ground.

10. The rotary laser welding post-weld inspection equipment as described in claim 1, characterized in that: The outer sides of the wheels of the transport trolley (3) are fitted with iron rings (31), wherein, The iron ring (31) is magnetically connected to the electromagnet (2).

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