Inverted vacuum screw tightening device

Abstract

The invention discloses an inverted vacuum screw tightening device. The tightening device comprises a screwdriver assembly, a vacuum adsorption mechanism and a gun nozzle which are connected from bottom to top on the basis of a vertical bracket, wherein the vertical bracket is provided with a back plate with a vertical guide rail and a sliding block slidably connected to the guide rail; the vacuumadsorption mechanism and the screwdriver assembly are both fixedly connected to the sliding block, and the vacuum adsorption mechanism is provided with a vacuum nail adsorbing pipe which is externally connected with a vacuum generator; the screwdriver assembly is provided with a screwdriver and a tightening motor, and a tool bit of the screwdriver penetrates into the vacuum nail adsorbing pipe; and an air cylinder is integrally installed beside the screwdriver assembly, the top end of a jacking rod of the air cylinder is connected with the gun nozzle in a positioning mode, and the vacuum nailadsorbing pipe and the screwdriver assembly are driven by the air cylinder to synchronously and axially move, penetrate into the gun nozzle or retreat to the bottom side of the gun nozzle. The devicehas the advantages of being simple in structure, reliable in running and high in working efficiency, and the condition that scrap iron generated through tightening directly falls into a product can be avoided in the using process.

Description

technical field [0001] The invention relates to the field of automatic assembly, in particular to an inverted vacuum screw tightening device. Background technique [0002] The application of threaded connections on mechanical equipment is common, and threaded connections exist almost everywhere there is machinery. In the traditional assembly method, the operator tightens the screws one by one. Even if he is well-trained, he cannot use his hands to ensure the consistency of screw tightening. The consistency of threaded connection torque is precisely what manufacturers are most concerned about. Therefore, most production workshops use machine automatic tightening. [0003] In existing machine automatic tightening equipment, there are two ways to feed screws: pick-up and blow-off. In the process of realizing the pick-up type, the gun nozzle needs to go to a certain place to pick up the nail, and then go to the tightening position to drive the screw. The electric cylinder mo...

AI Technical Summary

Problems solved by technology

The electric cylinder moves back and forth with the screw machine, which brings additional inertia force and vibration to the equipment, which affects the service life of the equipment

[0004] In actual assembly, many screws are buried in the middle of the raised electronic components, and the gun nozzle cannot reach the tightening surface

If the magnetic cutter head is used to suck the screw deep into the product, it will inevitably cause some damage to some electronic components

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