Power battery pack flying post-welding detection, dust removal and milling three-in-one equipment

Abstract

The invention belongs to the field of new energy battery pack flying welding equipment, and discloses power battery pack flying post-welding detection, dust removal and milling three-in-one equipment which comprises a three-axis rack, a dust removal mechanism and a detection and milling module, and the dust removal mechanism and the detection and milling module are fixed to the moving end of the three-axis rack. The equipment failure rate is low, and the equipment maintenance and operation cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of new energy battery pack flying welding equipment, and particularly relates to a three-in-one equipment for post-flying welding detection, dust removal and milling of power battery packs. Background Art

[0002] In the prior art, dust removal after welding is completed separately at three stations for dust removal and detection, with high costs, large floor areas and low production efficiency. The time for changing the compatible product blueprints is slow, and manual changeover is used for compatibility.

[0003] After module dust removal, there is a need for transfer time to reach the next station for processing. With multiple stations, the product yield rate cannot be controlled, increasing equipment maintenance and operation costs; the existing dust removal equipment uses a motor to rotate and drive a brush, which does not completely cover the battery pack for vacuum dust suction, resulting in unsatisfactory dust removal effects, inability to be compatible with multiple products, and inability to automatically change the dust removal for compatibility with multiple blueprints. After dust removal detection, there are stubborn welding slag on it that cannot be automatically removed again, and only manual removal of the welding slag is possible. Summary of the Invention

[0004] In order to solve the problems that the existing post-welding dust removal equipment completes dust removal and detection separately at three stations, with high costs, large floor areas and low production efficiency; the time for changing the compatible product blueprints is slow, and manual changeover is used for compatibility. After module dust removal, there is a need for transfer time to reach the next station for processing. With multiple stations, the product yield rate cannot be controlled, increasing equipment maintenance and operation costs; therefore, the present invention provides a three-in-one equipment for post-flying welding detection, dust removal and milling of power battery packs, integrating the post-welding dust removal, detection and milling three-station equipment into one station, with low equipment failure rate, reduced equipment maintenance and operation costs, and improved production efficiency.

[0005] The technical solution of the present invention is as follows: A three-in-one equipment for post-flying welding detection, dust removal and milling of power battery packs, comprising a three-axis frame, a dust removal mechanism fixed to the mobile end of the three-axis frame, and a detection and milling module. The detection and milling module includes a connecting plate, a milling cutter arranged on the connecting plate, and a visual detection unit located on the right side of the milling cutter for detecting whether the dust removal area is clean. The milling cutter is driven to rotate by a first driving device, the milling cutter is driven to move up and down by a second driving device, and the visual detection unit is driven to move left and right by a third driving device.

[0006] Preferably, the first driving device is a first motor, and the rotating shaft of the first motor is fixedly connected to the milling cutter.

[0007] Preferably, the second driving device is a first sliding table cylinder. A first slider is fixed to the mobile end of the first sliding table cylinder. The first slider is fixedly connected to the first motor. A limiting block is fixed to the connecting plate below the first slider. A spring is fixed between the first slider and the limiting block.

[0008] Preferably, the third driving device is an electric cylinder. A horizontal guide rail is fixed on the connecting plate. A second slider is slidably connected to the guide rail. The second slider is fixedly connected to the outer cover. The output end of the electric cylinder is fixedly connected to the second slider.

[0009] Preferably, dust removal pipes are installed on both sides of the milling cutter. The dust removal pipes are communicated with a negative pressure pump.

[0010] Preferably, the dust removal mechanism includes a connecting frame, and a dust removal cover, a row brush and a roller brush arranged on the connecting frame. The bottom of the dust removal cover has an opening. The row brush is hinged inside the dust removal cover and the bottom thereof is exposed at the opening. The row brush is fixed to the bottom of the dust removal cover. The connecting frame is driven by a fourth driving device to move up and down. The roller brush is driven by a fifth driving device to rotate.

[0011] Preferably, a dust removal negative pressure pipe is further fixed on the connecting frame. The dust removal negative pressure pipe is connected to a negative pressure pump. The dust removal negative pressure pipe is located at the rear side of the dust removal cover.

[0012] Preferably, the fourth driving device is a second sliding table cylinder. The moving end of the second sliding table cylinder is fixedly connected to the connecting frame.

[0013] Preferably, the fifth driving device is a second motor. The output end of the second motor is fixedly connected to the roller brush.

[0014] Preferably, a tool setter is further fixed on the three-axis machine frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention is applied to the post-welding treatment section of flying welding. It can realize dust removal and tumor removal after welding of a double-module. Its structure mainly includes a detection and milling module, a dust removal mechanism, and a workbench. This mechanism is driven by a servo through the sliding form of a gear rack and a slide rail, with a magnetic grating ruler position closed-loop feedback. The detection and milling module and the dust removal mechanism are equipped with an independent servo Z-axis, which can perform height compensation according to the height measurement of a 3D profiler, combine three stations into one station, automatically change the type, reduce the error rate, improve the efficiency, and increase the production capacity.

[0016] In the embodiment of the present invention, by designing the dust removal mechanism, the dust on the battery pack can be conveniently cleaned by designing the row brush and the roller brush, and then the dust is sucked out through the dust removal negative pressure pipe, further improving the dust removal effect. The dust removal effect is good. And because the dust removal mechanism is arranged on the three-axis machine frame and the installed sliding table cylinder itself, it is convenient to adjust the position of dust removal and can be compatible with multiple products.

[0017] The detection and milling module of the present invention consists of a milling cutter and a vision detection unit. The vision detection unit can synchronously scan the cleaning area at variable distances to detect whether the cleaning is complete, achieving the effect of no missed cleaning, improving production efficiency. The electric spindle drives the milling cutter to rotate, ensuring that the entire welding surface can be milled in one cut; the main body of the milling cutter mechanism is made of chromium copper with a Teflon coating on the surface, increasing wear resistance and insulation, and preventing chip adhesion.

[0018] This solution integrates the three-station equipment of post-weld dust removal, detection, and milling into one station, reducing equipment failure rate and improving product qualification rate. It reduces equipment maintenance and operation costs, improves production efficiency, and achieves the goal of cost reduction and efficiency improvement. It ensures no missed cleaning and repeated cleaning, guarantees that the dust removal module can remove any particles in the cleaning area, the dust removal module can completely cover the product cleaning area for vacuum suction, and the residual waste chips are integrally sucked at the back to ensure the dust removal effect. Brief Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall structure of the detection and milling module; Figure 3 is Figure 2 an enlarged schematic diagram of reference numeral A in the figure; Figure 4 is Figure 2 an enlarged schematic diagram of reference numeral B in the figure; Figure 5 is a schematic diagram of the dust removal mechanism of the present invention Figure 6 is a schematic diagram of the dust removal cover; Figure 7 is a cross-sectional view of the side of the dust removal cover; Figure 8 is a schematic diagram of the tool setter; In the figure: 1 - three-axis frame, 2 - dust removal mechanism, 21 - dust removal cover, 22 - brush, 23 - roller brush, 24 - dust removal negative pressure pipe, 3 - detection and milling module, 31 - connecting plate, 32 - milling cutter, 33 - second slide cylinder, 34 - suction pipe, 35 - outer cover, 36 - electric cylinder, 361 - guide rail, 362 - second slider, 37 - electric telescopic rod, 38 - first motor, 381 - first slider, 382 - limit block, 383 - spring, 4 - connecting frame, 5 - first slide cylinder, 6 - tool setter. Detailed Description of the Embodiment

[0020] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0021] Refer to Figure 1-3, a combined dust removal and milling detection device for power battery packs after flying welding, comprising a three-axis frame 1, a dust removal mechanism 2 fixed to the mobile end of the three-axis frame 1, and a detection and milling module 3. The detection and milling module includes a connecting plate 31, a milling cutter 32 arranged on the connecting plate 31, and a vision detection unit located on the right side of the milling cutter 32 for detecting whether the dust removal area is clean. The milling cutter 32 is driven to rotate by a first driving device, the milling cutter 32 is driven to move up and down by a second driving device, and the vision detection unit is driven to move left and right by a third driving device.

[0022] See Figure 2 , in an embodiment of the invention, the first driving device is a first motor 38, the rotating shaft of the first motor 38 is fixedly connected to the milling cutter 32, and the milling cutter 32 is driven to rotate by the motor 38 to mill the battery pack.

[0023] See Figure 3 , in an embodiment of the invention, the second driving device is a slide table cylinder 33. A first slider 381 is fixed on the mobile end of the slide table cylinder 33. The first slider 381 is fixedly connected to the first motor 38. A limit block 382 is fixed on the connecting plate 31 below the first slider 381. A spring 383 is fixed between the first slider 381 and the limit block 382. When the milling cutter is driven by the first slide table cylinder 33 to move down for work, it is limited and buffered by the limit block 382 and the spring 383, and the battery pack will not be damaged during cleaning.

[0024] See Figure 2 and Figure 4 , in an embodiment of the invention, the vision detection unit includes an electric telescopic rod 37, an outer cover 35, a profiler and an industrial camera. The telescopic end of the electric telescopic rod 37 is fixedly connected to the outer cover 35. The profiler and the industrial camera are installed inside the outer cover and can perform scanning at variable distances synchronously to detect whether the cleaning area is clean. The above-mentioned electric telescopic rod can be an electric cylinder or a cylinder.

[0025] See Figure 4 , in an embodiment of the invention, the third driving device is an electric cylinder 36. A horizontal guide rail 361 is fixed on the connecting plate. A second slider 362 is slidably connected to the guide rail 361. The second slider 362 is fixedly connected to the outer cover 35. The output end of the electric cylinder 36 is fixedly connected to the second slider 362.

[0026] See Figure 3 , in an embodiment of the invention, dust removal pipes 34 are installed on both sides of the milling cutter 32. The dust removal pipes 34 are communicated with a negative pressure pump for adsorbing the dust on the milling cutter 32.

[0027] In an embodiment of the invention, the milling cutter 32 is processed from chromium copper, and the surface of the milling cutter 32 is coated with Teflon, which increases wear resistance and insulation and prevents chip adhesion.

[0028] During operation, after the battery pack reaches the detection and milling module, the milling cutter slide cylinder 33 drives the milling cutter 32 to move downward, and the motor 38 drives the milling cutter 32 to rotate to mill the tumor on the battery pack. At the same time, the vision detection unit scans synchronously through the electric telescopic rod 37, the profiler and the industrial camera zoom to detect whether the cleaning area is clean. If dirt is detected, it will return to the station for cleaning again.

[0029] See Figure 8 , in an embodiment of the present invention, a tool setter 6 is also fixed on the three-axis frame to regularly calibrate the Z-axis of the tool and calibrate it after replacing the tool. The repeat positioning accuracy is 0.01 mm to prevent the deviation of the milling height caused by tool wear; The process of the tool setter is as follows: 1. Calibrate the height of the tool after each milling; 2. If the calibration is NG, the device will alarm and prompt the operator to quickly change the tool; 3. After the calibration is OK, return to the original position and wait for the next product to enter the station; See Figure 5-7 In an embodiment of the present invention, the dust removal mechanism includes a connecting frame 4, and a dust removal cover 21, a row brush 22 and a roller brush 23 arranged on the connecting frame 4. The bottom of the dust removal cover 21 has an opening. The row brush 22 is hinged inside the dust removal cover 21 and the bottom is exposed at the opening. The row brush 22 is fixed to the bottom of the dust removal cover 21; the connecting frame 4 is driven by a fourth driving device to move up and down, and the roller brush 23 is driven by a fifth driving device to rotate.

[0030] See Figure 5 , in an embodiment of the present invention, a dust removal negative pressure pipe 24 is also fixed on the connecting frame 4. The dust removal negative pressure pipe 24 is connected to a negative pressure pump. The dust removal negative pressure pipe 24 is located at the rear side of the dust removal cover 21 and can suck the waste chips on the battery pack.

[0031] See Figure 6-7 , in an embodiment of the present invention, the row brush 22 is arranged around the bottom of the dust removal cover 21.

[0032] In a preferred embodiment of the present invention, the material of the roller brush 23 is nylon 66 and silicon carbide. Using this material for the roller brush will not cause scratches on the surface of the module, and at the same time, it is not easy to shed hair and is not conductive.

[0033] In another preferred embodiment of the present invention, the material of the roller brush 23 is alumina, and the use effect is the same as that of the previous embodiment.

[0034] In one embodiment of the present invention, the fourth driving device is a second slide cylinder 5. The moving end of the second slide cylinder 5 is fixedly connected to the connecting frame 4, and can drive the connecting frame 4 to move up and down, so as to drive the brush 22, the roller brush 23 and the dust removal negative pressure pipe 24 to press down on the surface of the product to remove dust.

[0035] In one embodiment of the present invention, the fifth driving device is a second motor, and the output end of the second motor is fixedly connected to the roller brush 23.

[0036] During operation, when the battery pack enters the working range of the dust removal mechanism, the moving end of the second slide cylinder descends to drive the connecting frame 4 and the dust removal cover 21, the brush 22 and the roller brush 23 fixed on the connecting frame 4 to press down on the surface of the product. The brush 22 contacts the battery pack first, and the roller brush 23 is driven by the second motor to clean the surface of the battery pack. At the same time, the dust removal negative pressure pipe 24 sucks vacuum.

[0037] The present invention has the following working principle: Dust removal / removing burrs after welding: At the beginning, the AGV cart carries the battery pack into the station at a speed of 0.25 m / s.

[0038] The AGV cart interacts with the MES system; The lifting table in the middle of the three-axis frame (which can be a combination of a cylinder and a platform or other equivalent structures, and the conventional technology is not described in detail) positions the cart; The lifting table jacks up the cart; The three-axis carries a 3D profiler and a 2D camera for post-welding inspection, including detecting whether the dust removal area is clean and whether it is necessary to mill the uneven local area (i.e., remove burrs) with a milling cutter; The three-axis carries the milling cutter and moves to the cleaning position to synchronously press down and mill; The three-axis carries the dust removal mechanism to remove dust from the weld area on the battery pack (milling and dust removal are almost completed synchronously); After milling, the three-axis drives the 3D profiler and the 2D camera for re-inspection; After the re-inspection is correct, the lifting table descends to drive the cart to descend; The AGV cart runs to the next station.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. A three-in-one device for post-detection dust removal and milling of a power battery pack after flying welding, characterized in that, It includes a three-axis frame, a dust removal mechanism fixed to the mobile end of the three-axis frame, and a detection milling module. The detection milling module includes a connecting plate, a milling cutter arranged on the connecting plate, and a vision detection unit located on the right side of the milling cutter for detecting whether the dust removal area is clean. The milling cutter is driven to rotate by a first driving device, the milling cutter is driven to move up and down by a second driving device, and the vision detection unit is driven to move left and right by a third driving device.

2. The post - detection, dust removal and milling three - in - one equipment for a power battery pack after flying welding according to claim 1, characterized in that, The first driving device is a first motor, and the rotating shaft of the first motor is fixedly connected to the milling cutter.

3. The dust removal and milling three-in-one equipment for post-inspection of a power battery pack after flying welding according to claim 1, wherein The second driving device is a first slide cylinder. A first slider is fixed on the mobile end of the first slide cylinder. The first slider is fixedly connected to the first motor. A limit block is fixed on the connecting plate below the first slider, and a spring is fixed between the first slider and the limit block.

4. A combined device for post - flight - welding detection, dust removal and milling of a power battery pack according to claim 1, characterized in that, The third driving device is an electric cylinder. A horizontal guide rail is fixed on the connecting plate. The guide rail is slidably connected with a second slider. The second slider is fixedly connected to the outer cover, and the output end of the electric cylinder is fixedly connected to the second slider.

5. The post - detection, dust removal and milling integrated equipment for the flying welding of a power battery pack according to claim 1, wherein, Dust removal pipes are installed on both sides of the milling cutter, and the dust removal pipes are communicated with a negative pressure pump.

6. The post-detection, dust removal and milling three-in-one equipment for a power battery pack after flying welding according to claim 1, characterized in that The dust removal mechanism includes a connecting frame, and a dust removal cover, a row brush and a roller brush arranged on the connecting frame. The bottom of the dust removal cover has an opening. The row brush is hinged inside the dust removal cover and the bottom is exposed at the opening. The row brush is fixed to the bottom of the dust removal cover. The connecting frame is driven to move up and down by a fourth driving device, and the roller brush is driven to rotate by a fifth driving device.

7. A three-in-one device for post-detection dust removal and milling of a power battery pack after flying welding, characterized in that, A dust removal negative pressure pipe is also fixed on the connecting frame. The dust removal negative pressure pipe is connected to a negative pressure pump, and the dust removal negative pressure pipe is located at the rear side of the dust removal cover.

8. A post - detection, dust - removal and milling three - in - one device for a power battery pack after flying welding according to claim 6, characterized in that, The fourth driving device is a second slide cylinder, and the mobile end of the second slide cylinder is fixedly connected to the connecting frame.

9. The post - detection, dust removal and milling three - in - one equipment for a power battery pack after flying welding according to claim 6, wherein, The fifth driving device is a second motor, and the output end of the second motor is fixedly connected to the roller brush.

10. The post - detection, dust removal and milling integrated equipment for a power battery pack after flying welding according to claim 1, characterized in that, A tool setter is also fixed on the three-axis frame.

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