Synchronous welding device of double-headed riveting pipe of automobile seat

Abstract

The invention relates to a synchronous welding device of a double-headed riveting pipe of an automobile seat, a tooling convex table is arranged on a working table, a top fixed support is fixedly connected at two sides of the tooling convex table, a ball-head screw rod is inserted into the upper part of the top fixed support, the ball head of the ball-head screw rod is contacted with the upper arm point of a pressing lever, the rotation center of the pressing lever is movably connected with a lower fixed support under the working table by a shaft pin, and two straight gears which are engaged together are fixedly connected on the rotation centers of a left pressing lever and a right pressing lever coaxially, the lower arms of the left pressing lever and the right pressing lever are fixedlyconnected with cylinder ejecting rods at two sides of a cylinder by a cylinder connecting piece respectively. The synchronous welding device on the invention is driven by a two-way cylinder to rotatearound two fixed supporting points through two pressing levers, two straight gears are driven to synchronously rotate, the head parts at the top end of two pressing levers rotate around two fixed supporting points and synchronously compress inwards, two ejector pin shafts are pushed to straightly move inwards to press head parts at two ends of a reel pipe pin shaft synchronously in a riveting way, so as to lead the head parts of the reel pipe pin shaft to turn up symmetrically and evenly, thereby ensuring the symmetrical characteristic of the reel pipe pin shaft and the supporting hole bases at two sides and the reliability of the concentricity parameter.

Description

technical field [0001] The invention relates to an assembly device of an automobile seat frame, in particular to a synchronous pressing device for double-headed riveting pipes of an automobile seat to form uniform flanging of notches. Background technique [0002] The state has promulgated a series of standards for the performance of car seats. In order to meet the standards, enterprises have formulated corresponding requirements and indicators in the process of producing and assembling seats. One of them is the assembly requirements and indicators of the hinge point of the seat frame pan and the seat frame chute. It is required that after the hinge point of the car seat frame seat pan and the seat frame chute is installed, the notch of the pin shaft of the rolling tube forms a uniform flanging, and the pin shaft is riveted and fixed. The pin shaft maintains good symmetry with the supporting hole seats on both sides, and the pin shaft and the supporting hole seats have good...

AI Technical Summary

Problems solved by technology

Because one end of the notch of the rolling tube pin is positioned with a fixed thimble, when the cylinder pressure pushes the notch of the rolling tube pin to flang, a slight rotation will be generated when the seat frame translates, and the frictional resistance during movement will make the rolling tube After the pin shaft is flanged, the symmetry of the supporting hole seat and the concentricity between the rolling tube pin shaft and the supporting hole seat are often difficult to control. The symmetry and concentricity of the pipe pin shaft to the support hole seat are out of tolerance, and the scrap rate is high

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