SU16866A1 - Device for feeding blanks of varying thickness in circular blades - Google Patents

Description

For mechanical feeding to conventional circular blades of workpieces of varying thickness, it is difficult to use ordinary rollers, of which the upper one can move upwards with an increase in the thickness of the workpiece, since the workpiece bends and trembles.

According to the present invention, these drawbacks, when supplying blanks, are eliminated by a device consisting of two movable rollers, which, when feeding blanks of varying thickness, respectively, approach each other, or are removed from each other. The axes of these feed rollers are placed at the ends of the double-arm levers that can rotate on axes located in two crossbars, which in turn are also pivotal. To bring the rollers closer to the minimum distance between them, the weight of the elongated part of one of the crossbars or the weight suspended from this crossbar serves.

In the schematic drawing of FIG. 1 shows a front view of the proposed device, FIG. 2 is a top view thereof; FIG. 3 is a section along line AB in FIG. 1, fig. 4 is a top view of crossbars with axles in them for double-arm levers.

Rollers 1 and 1 are rigidly mounted on the axis 2.2, rotating in bearings 3,

placed at the ends of the double-arm levers 4.4 and 5.5, which can rotate on axles 12 (fig. 1-4). The axes 12 are located in the crossbars 9 and 10 (Fig. 1-4) rigidly mounted on the pivot in the fixed supports 8 axis 7, and the cross member 10 has an elongated part 10 of which weight, acting on the levers 4.4 and 5.5, caused With the help of the latter, the rollers 1 approach each other, T to the minimum distance between them, and a stronger pressing of the rollers on the workpiece between them can be achieved by a load suspended from this crossbar.

The described device provides the correct feeding of the blanks to the circular blading machines, since as the thickness of the blanks is changed, the rollers 1.1 move closer or diverge by an amount corresponding to the change in the thickness of the blanks. In this case, the lateral deviations of the rollers are eliminated by using long flat springs 13 and 14 (Fig. 1), which are connected at one end to bearing caps 3 and the other with fixed parts of the machine, and to impart proper rigidity to the parts supporting axes 2, 2 rollers 1 and 1, levers 4.4 and 5.5 are connected to each other in pairs using plates 15 and 16.