Seal welding method and device for sealing nail sealing
A sealing welding and sealing nail technology, which is applied in the field of sealing welding method and device for sealing nails, can solve the problems of poor assembly, bursting, and excessive concentricity deviation of sealing nails, so as to solve the problems of poor assembly, eliminate differences, and reduce Effects of deformation and displacement errors
Active Publication Date: 2022-06-03
WUHAN YIFI LASER EQUIP CO LTD +1
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Problems solved by technology
[0006] In the sealing nail welding process in the prior art, there are poor sealing nail assembly, excessive concentricity deviation after sealing nail welding, fixed welding focal length cannot be flexibly changed, welding track deviation, poor appearance, weld seam deviation and bursting, etc. question
[0007] One of the concepts of the present invention is to compensate the height of the laser emitting head in real time, reduce welding errors, and avoid the occurrence of welding focal lengths that cannot be flexibly changed due to differences in raw materials, poor weld appearance, weld offset, and bursting The problem
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[0027] Attached below Figures 1 to 8 , the present invention is described in detail.
[0028] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0029] In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication...
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The invention relates to a seal welding method and device for sealing nail sealing, and the method comprises the steps: capturing image information of a seal welding surface through an image collection assembly, calculating a circle center coordinate value of the seal welding surface, and calculating the seal welding surface according to a difference value between the circle center coordinate value of the seal welding surface and a coordinate value of a laser emitting head. Compensating the motion trail circle center coordinate value of the laser emitting head to enable the motion trail circle center of the laser emitting head to coincide with the circle center of the sealing nail all the time in the welding process; and the vertical height from the sealing welding face to a displacement sensor is obtained through the displacement sensor, and the height of the laser emitting head is compensated according to the vertical height difference value between the laser emitting head and the displacement sensor, so that the sealing nail welding face is always located at the focal length position of a laser welding beam in the welding process. According to the method provided by the invention, the problems that the welding focal length is fixed and cannot be flexibly changed and the welding track deviates are solved, and the product rejection rate is reduced while the complexity of the welding processing technology is prevented from being increased.
Description
technical field [0001] The invention relates to the field of battery production, in particular to a sealing and welding method and device for sealing a sealing nail. Background technique [0002] With the rapid development of new energy vehicles and electronic products, the battery manufacturing industry has also attracted more and more attention. The sealing and welding of the sealing nail seal is one of the key processes in battery manufacturing: after the battery cell is encapsulated into the battery casing, a liquid injection hole is generally left on the casing for the injection of electrolyte; after the electrolyte is injected, A sealing pin is required to seal the housing. In the existing battery production industry, lasers are basically used to weld battery sealing pins, because the laser energy density is high, the welding deformation is small, and it is easy to realize automation. [0003] The patent with the publication number CN206952361U provides a welding pla...
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Login to View More IPC IPC(8): B23K26/21B23K26/70
CPCB23K26/21B23K26/702Y02P70/50
Inventor 冉昌林陈乔刚刘超丛长波
Owner WUHAN YIFI LASER EQUIP CO LTD