Variable-speed moving mechanism of rack of coiling machine

Abstract

A variable-speed moving mechanism of a rack of a coiling machine comprises a rack, slide seats, a connecting rod, a lead screw holder, a lead screw, a nut slider and a gear. The rack meshes with a clutch gear of a wire feeding wheel transmission device, the middle of the rack is connected with one end of the connecting rod through a pin, the rack is slidably connected between the two slide seats, and the slide seats are fixed on a framework. The other end of the connecting rod is connected to the nut slider through a pin. The gear is fixed on the framework through a bearing, and the gear and the lead screw holder are fixed on the same rotary shaft. The lead screw is connected to the lead screw holder through a bearing, the nut slider is connected to the lead screw holder through a slide tenon and is connected with the lead screw in a threaded manner, and the lead screw rotates to drive the nut slider to slide on the lead screw holder. The variable-speed moving mechanism has the advantages that a wire feeding wheel is driven to be subjected to variable-speed rotation by the rack, the acceleration and the speed of the wire feeding wheel are zero at the moment of starting and the moment of stopping, steel wires can be conveyed continuously without impaction, and accordingly the proportion of effective work time is high and production efficiency is high.

Description

technical field [0001] The invention relates to a non-cutting metal wire forming machine, in particular to a gear rack variable speed moving mechanism of a spring machine, which is suitable for [0002] The transmission device of the wire feeding wheel of the spring machine. Background technique [0003] The wire feeding transmission mechanism is a key component that every wire spring winding machine must have. There are annular grooves on the outer circle of the paired wire feeding wheel. During the spring winding process of the mechanical spring machine, the wire feeding wheel rotates at a constant speed in the opposite direction. , the steel wire is clamped in the groove of one or several pairs of wire feeding wheels and is forced to be sent out, and moves in the direction of the winding system. Resist and push the steel wire in the direction, change the forward direction of the steel wire, and make the steel wire wind up into a spring. After the spring is coiled, stop t...

AI Technical Summary

Problems solved by technology

Moreover, at the moment of starting and stopping, the steel wire will slip to an uncertain degree in the groove of the wire feeding wheel, which will affect the winding accuracy of the spring

When the clamping force of the wire feeding wheel on the steel wire is large, the steel wire will pull scratches on the groove of the wire feeding wheel, which will affect the out-of-roundness of the groove and cause the subsequent wire feeding speed to be uncertain

[0004] The cutting process of the steel wire only takes a few tenths of a second. When the height of the spring is not large, that is, when the length of wire feeding required for each spring is short, the winding process only takes a few seconds. Too frequent stops and Start-up process, resulting in short life of parts

Moreover, it also affects the production efficiency of the spring machine, so that it cannot take advantage of the maximum advantage of automated production.

[0005] The newly manufactured high-end spring machine also has a wire-feeding mechanism that uses sector gears and roller-type overrunning clutches. The disadvantages of this structure are that the effective wire feeding time is less, the production efficiency is low, and the life of the overrunning clutch is short.

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