Four-needle point welding head device

Abstract

The invention provides a four-needle point welding head device. The four-needle point welding head device comprises a laser alignment mechanism, a position induction mechanism, a fixed base, a welding needle guide mechanism, a pressure adjusting mechanism, a welding needle position adjusting mechanism and a rapid welding needle adjusting mechanism. The fixed base is provided with a point welding head vertical plate with an open hole. The rapid welding needle adjusting mechanism is arranged at the front end of the point welding head vertical plate and provided with a guide through hole. The position induction mechanism is arranged at the back end of the point welding head vertical plate. The laser alignment mechanism is arranged on the fixed base. The welding needle position adjusting mechanism is movably connected with the welding needle guide mechanism. The welding needle guide mechanism is slidably arranged on the rapid welding needle adjusting mechanism. The front end of the pressure adjusting mechanism is fixed to the welding needle guide mechanism, and the tail end of the pressure adjusting mechanism extends to the front end of the position induction mechanism. The four-needle point welding head device has the advantages that the welding efficiency of a welding point can be improved through the point welding head device; the welding quality of the welding point is ensured; and meanwhile, the needle adjusting speed can be greatly increased.

Description

technical field [0001] The invention relates to the field of spot welding equipment, in particular to a four-pin spot welding head device. Background technique [0002] Lithium batteries are currently the main batteries used in China. They are widely used in notebook computers, mobile power supplies, electric tools, electric bicycles, electric motorcycles, electric vehicles, solar energy storage power supplies, wind energy storage power supplies, base station energy storage power supplies, etc. in the field. In the process of assembling the battery cells into modules, it is necessary to perform spot welding on the battery cells. In the field of spot welding machine welding, people are pursuing various aspects such as high welding efficiency, small area of ​​welding materials, and convenient debugging of welding needles of spot welding machines. A combination of products. The basic mode used in battery cell welding is to weld a pair of lug nickel sheets with the battery cel...

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Problems solved by technology

[0003] In order to solve the above problems, the existing production technology generally adopts double welding to carry out two spot welding on the end face of a single cell, so as to achieve spot welding of four welding points. Therefore, the existing method is not only low in welding efficiency, but also in operation During the long-term debugging of personnel and the process of changing the module alignment, due to the tedious and time-consuming debugging steps, it is easy to have inaccurate alignment and poor spot welding.

[0004] After retrieval, the application date is 2016.05.13, and the Chinese invention patent with the application number 201610319405.0 discloses a four-point welding device. Although the device can realize spot welding of four welding points at the same time and improve the efficiency of spot welding, however, the The welding device has the following defects: 1. Radial rotation is used to adjust the angle of the welding needle clamp, but in actual implementation, the angle of radial rotation is often difficult to accurately grasp, and the fast and accurate adjustment of the welding needle position cannot be realized. And the needle adjustment rate is relatively low; 2. Without using a special alignment mechanism, it is impossible to achieve accurate alignment of the position to be spot welded, and the spot welding accuracy is relatively poor; 3. The pressure control uses a linear bearing, which requires an additional rotation limit This also complicates the entire pressure regulation mechanism

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