Double-headed stud automatic tightening device

Abstract

The invention discloses an automatic screw-up device for a double-end stud. The automatic screw-up device comprises a guide rail mounted on a bracket, wherein the piston rod of a primary linear air cylinder is fixedly connected with a lower fixed plate; a secondary linear air cylinder is mounted on an upper fixed plate; a retraction air cylinder is fixedly arranged on the lower fixed plate; the piston rod of the secondary linear air cylinder is connected with the piston rod of the retraction air cylinder through a connecting rod; a screw-up shaft is mounted on the upper fixed plate, and extends out of the upper fixed plate; the screw-up shaft is connected with a clutch; the clutch is connected with a screw-up head, and the screw-up head extends into a bolt feeding nozzle; the bolt feeding nozzle is fixed with the lower fixed plate; a bolt inlet is formed in the upper portion of the bolt feeding nozzle; a bolt blocking nozzle is mounted on the lower portion of the bolt feeding nozzle; a bolt blocking nozzle air cylinder is fixed with the end surface of the bolt feeding nozzle; the piston rod of the bolt blocking nozzle air cylinder is connected with a connecting plate; one end of a screw-up spring is fixed with the upper fixed plate, and the other end of the screw-up spring is fixed with a buckle; and the buckle is buckled on the screw-up shaft. The automatic screw-up device disclosed by the invention is used for a sleeve automatic assembly production line, and is used for automatically mounting and screwing up the double-ended stud into a threaded hole of a workpiece, so that automatic mounting and screw-up work of standard parts in an automatic assembly process is effectively solved.

Description

technical field [0001] The invention belongs to a device for tightening a stud, in particular to an automatic tightening device for a double-ended stud. Background technique [0002] Double-ended studs refer to cylindrical fasteners with threads at both ends, which are widely used in electric power, chemical industry, oil refining, valves, railways, bridges, steel structures, automobile and motorcycle parts, machinery, boiler steel structures, hanging towers, large Span steel structures and large buildings, etc. The double-ended stud connection is to screw one end of the double-ended stud into the screw hole of one of the connected parts, and the other end passes through the through hole of the other connected part, then put on the washer and tighten the nut. The assembly of double-ended studs needs to be completed with the help of special tools. The usually used double-ended stud tightener is to rely on external force to rotate the screw sleeve, screw the tail end of the d...

AI Technical Summary

Problems solved by technology

However, in the automatic assembly process of the sleeve, there is no special tightening device for automatically installing and tightening the double-ended studs into the corresponding threaded holes of the workpiece.

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