SU362889A1 - MECHANISM OF PUMPING OF EARPHEAD COMBINES OF THE BASIS-BANDING MACHINE - Google Patents

Description

one

This invention relates to the field of knitwear.

The known mechanism of pumping the ear combs of the foundations of the die machine, contains a crank mechanism with a crank, made in the form of an eccentric mounted on the main shaft, and links attached to this mechanism, on one of which the combs are fixed.

The present invention differs from the known one in that the attached links are a dyad, and in one of the dead positions of the crank-connecting rod mechanism its rocker is with a line of centers connecting the axis of the movable hinge of the dyad and the fixed hinge of the rocker arms, an angle of about 15 °.

FIG. Figure 1 shows the kinematic scheme of the mechanism for pumping ear combs; FIG. 2 is a plot of the distance of the ear combs of one of their pumping positions; FIG. 3 is a plot of the angular acceleration of the dies.

The mechanism is designed for pumping the ear combs of the bases of the machine and is made in the form of a six-sleeve, consisting of a crank-connecting rod mechanism with a dyad attached to it. The ear combs 1 are fixed on the yoke of the 2 dyad, and in one of the dead positions of the crank mechanism, its yoke 3 forms a line of centers 4 connecting the axes of the movable hinge 5 of the dyad and the fixed hinge 6 of the yoke 3, the angle is about 15 °.

The crank 7 is made in the form of an eccentric mounted on the main shaft 8 of the machine.

Curves 9 and 10 (Fig. 2) show the distance 5 of the ear ridges of one of their positions during pumping, corresponding to the origin of the angle of rotation f of crank 7, and curve 9 refers to the well-known eight-link, and curve 10 to the six-link mechanism.

In the graph of FIG. 3 are given curves // and 12 depending on the angular acceleration of the ear ridges on the same angle φ for the same mechanisms, respectively, and e is expressed in terms of the square of the angular velocity w of the crank 7.

The mechanism works as follows. The crank 7 rotates the rocker 3, and from it the rocker 2 with the combs attached to it. With φ equal to 0-75 ° and 285-360 °, the combs / are positioned in front of the needles of the machine at such a distance that their small movement to the place of the platforms at a height (curve 9, fig. 2) does not disturb the process of looping. Application of six

the mechanism of pumping combs instead of eight-star reduces angular acceleration e combs.

This reduces the dynamic loads on the links of the mechanism and the warp threads.

Subject invention

The mechanism for pumping the ear combs of the founding machine, containing a crank drive mechanism with a crank, made in the form of an eccentric mounted on the main shaft of the machine, and links attached to this mechanism, one of which has a die attached, in order to reduce dynamic loads the links of the mechanism and the warp threads, the attached links constitute a dyad, and in one of the dead positions of the crank-connecting rod mechanism its rocker is with a line of centers connecting the axis odvizhnogo dyad hinge and the fixed pivot of the rocker, an angle of about 15 °.

30 60 sa 120 150 jsa 210 gyu iw jjo jw