A top pressing structure for head welding

Abstract

The invention relates to the field of vehicle production, in particular to a top pressing structure for headstock welding. The top pressing structure comprises a welding framework and a top plate capable of lifting on the framework, wherein when the top plate descends to be in contact with the upper end of the welding framework, the top plate is limited by the welding framework, and cannot continue to descend; a pressing mechanism for positioning the top of a headstock is arranged on the top plate; a welding cavity is arranged in the welding framework; the pressing mechanism comprises an air cylinder; the air cylinder is fixedly arranged at the upper end of the welding framework; the lower end of the top plate is equipped with a fixed base; a plurality of pressing rods and through holes which are in one-to-one correspondence to the pressing rods are arranged on the side wall of the fixed base; the pressing rods are arranged in the corresponding through holes in a sliding mode; a guidehole is formed in the top plate; a piston rod of the air cylinder is arranged in the guide hole in a sliding mode; the lower end of the piston rod of the air cylinder is equipped with a pressing plate; and the middle part of the pressing plate is downwards bulged with a pressing head for pushing the pressing rods. The top pressing structure can be used for quickly and accurately clamping the top of the headstock, and quickly relieves clamping for the top of the headstock after welding is completed.

Description

technical field [0001] The invention relates to the field of vehicle production, in particular to a top pressing structure for welding a vehicle head. Background technique [0002] Electric flatbed truck is a means of transportation for pulling goods or people driven by batteries and motors. It is widely used in short-distance transportation fields such as households, urban and rural areas, individual rental, factory areas, mining areas, sanitation, and community cleaning. Generally, it is relatively harsh, and has high requirements for frame materials and welding processes. The front of the electric flatbed car is mainly welded by multiple parts such as the front gear 11, the rear gear 12, and the seat bracket 13. The bracket is composed of 14, and the whole is in the shape of a square frame. In the factory, the front of the car is usually initially positioned by locating parts such as positioning pins, and then clamped in all directions with numerous quick clamps and othe...

AI Technical Summary

Problems solved by technology

The front of the electric flatbed car is mainly welded by multiple parts such as the front gear 11, the rear gear 12, and the seat bracket 13. The bracket is composed of 14, and the whole is in the shape of a square frame. In the factory, the front of the car is usually initially positioned by locating parts such as positioning pins, and then clamped in all directions with numerous quick clamps and other fixtures. Each welding must be done one by one. The process of operating the quick clamp is cumbersome, and it is difficult to ensure the position accuracy after clamping. Most of the head welding adopts the method of clamping all parts on the welding mold for one-time integral welding, which makes it difficult to remove the top of the head after welding. Removed from the welding mold, resulting in low welding accuracy and efficiency

[0003] Chinese Patent Authorization Announcement No. CN 204978670 U, date of authorization announcement is 2016.01.20, titled "A Passenger Car Front Top Structure", discloses a structure in which the front top is welded as a separate module, but this front top structure It is only suitable for passenger cars, not suitable for welding the top of the front of the electric flatbed truck, and the structure of the top of the head needs to be welded separately, which is difficult to meet the needs of one-time overall welding of the front of the factory

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