Flexible binding tool with adjustable pressure

Abstract

The invention discloses a flexible binding tool with adjustable pressure. The flexible binding tool comprises a circular sleeve, a main shaft and a pressing wheel assembly, wherein the upper end of the main shaft is inserted into the lower end of the circular sleeve, and the pressing wheel assembly is connected with the lower end of the main shaft. The flexible binding tool is characterized by further comprising an elastic supporting assembly, wherein the elastic supporting assembly comprises a connecting flange, a driving rod, a driven rod and an adjusting screw; the connecting flange is fixedly connected with the upper end of the circular sleeve, the upper end of the driving rod is rotatably connected with the lower surface of the connecting flange, a spring pressing head is arranged below the driven rod, and the lower end of the driven rod is rotatably connected with the top of the spring pressing head; the lower end of the driving rod is rotatably connected with the upper end of the driven rod, the adjusting screw transversely penetrates through the side wall of the circular sleeve, and the end of the adjusting screw abuts against a connecting point of the lower end of the driving rod and the upper end of the driven rod; and a variable spring is arranged between the spring pressing head and the upper end of the main shaft, and two ends of the variable spring abut against the upper end of the main shaft and the lower end of the spring pressing head respectively.

Description

technical field [0001] The invention relates to a hemming tool in the automobile welding industry, in particular to a flexible hemming tool with adjustable pressure. Background technique [0002] At present, with the vigorous development of China's automobile industry, the competition is becoming increasingly fierce. First, the model is updated rapidly. The second is to provide spare parts to the market in a timely manner in order to protect models that have not been mass-produced. Automobile factories are increasingly demanding a hemming process capable of flexible production, namely robotic hemming technology. As a key component of robot hemming technology, the hemming tool plays a decisive role in the quality of the product. [0003] There are three main types of existing mechanical hemming tools: [0004] 1. The purely rigid structure, including the main body and the roller set, cannot adjust the hemming force; [0005] 2. An elastic structure is set on the basis of ...

AI Technical Summary

Problems solved by technology

[0004] 1. The purely rigid structure, including the main body and the roller set, cannot adjust the hemming force;

[0005] 2. An elastic structure is set on the basis of one, and the hemming force in the hemming process is floating and adjustable, but the elastic pre-tightening force is not adjustable;

[0006] 3. On the basis of 2, a pre-tightening adjustment mechanism is added to the elastic structure, but the mechanism is inside the tool, making it difficult to adjust

But there is no pre-tightening force adjustment mechanism, and the adaptability to door panels of different materials is poor. For example, steel parts and aluminum parts have different requirements for the initial pre-tightening force of hemming tools.

[0010] The third category, the stiffness of the elastic elements in the hemming tool is generally relatively high, which requires the help of external tools

Many preload adjustment mechanisms are laborious and inconvenient to adjust

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