Primary binding and prebinding four-rod linkage binding device

Abstract

The invention provides a primary binding and prebinding four-rod linkage binding device, comprising a primary binding tool assembly, a prebinding tool assembly, a primary binding lever, a primary binding and prebinding linkage rod, primary-binding four rods, prebinding four rods, a hydraulic cylinder and a support, wherein the primary binding tool assembly is respectively connected with the primary binding lever and the primary-binding four rods; the prebinding tool assembly is respectively connected with the primary binding and prebinding linkage rod and the prebinding four rods; the primarybinding and prebinding linkage rod is respectively connected with the primary binding lever and the prebinding tool assembly; the primary binding lever and the hydraulic cylinder are arranged on the support; the hydraulic cylinder pushes the primary binding lever to rotate and simultaneously pushes the primary binding tool assembly and the prebinding tool assembly to move. The primary binding andprebinding four-rod linkage binding device of the invention changes a lever linkage mechanism into the four-rod linkage mechanism, so no matter how complex the bond profile of a part is, the prebinding of each point of the profile can obtain relative ideal digging angles, thereby achieving better binding effect.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a main pre-wrapping four-bar linkage hemming device used in the automotive field. Background technique [0002] At present, in terms of the hemming process of automobile doors and covers, there are presses + hemming mold hemming, table-type hemming machine hemming, and manipulator hemming. The press + hemming mold and table hemming machine all use mechanisms for hemming, which is also the most widely used form in the field of door and cover hemming in the automotive industry. [0003] like figure 1 as well as figure 2 As shown, 1 is the main wrapping mechanism, and 2 is the pre-wrapping mechanism. In the table-type edge wrapping machine, the mechanism wrapping is divided into two types, namely the lever and the four-bar. Generally, the straight side adopts a lever mechanism, which can simplify the device, such as figure 1 shown. However, for the profile of the door cover assembly w...

AI Technical Summary

Problems solved by technology

But the disadvantage is that the pre-wrap uses a lever mechanism, the direction of the pre-wrap cutting force cannot achieve the best cut angle at every place, and the quality of the hemming cannot be guaranteed.

This is the main reason why the main and pre-package lever linkage mechanism has not been widely used.

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