SU27313A1 - Device for tightening the workpiece on the block - Google Patents

Description

A device for tightening the block is made for the purpose of better pressing the blanks to the block and a better distribution of the pulling forces to different parts of the blank, in the form of a spring plate with unequal thickness in different sections, and driven by a system of levers zannyh with sliders.

In FIG. 1 shows the general-top view of the tightening mechanism; FIG. 2 is a view of FIG. 1 at the side when removing the gear; FIG. 3-eyelet plate, top view; FIG. 4- the same, side view; FIG. 5 is a view of the tightening plate in section.

The device consists of a tightening plate 1 (Fig. 2 and 5) with ears 2 attached to it (Fig. 1-4). The ears of the spring are pivotally connected by pins 3 with levers 4, 5 (FIG. 1), pivoting on the axes placed in the sliders b. The slides are driven by the cam system from the cam mechanism on the main shaft of the machine. The position of the axis of rotation of the lever 4 Relative to the slide b can be adjusted by the handwheel 7.

The spring is a cylindrical or conical surface with an inclination of about 30 °. The purpose of the slope of the double co. E: firstly, to facilitate the possibility of flashing the cp from the bottom

and, secondly, to prevent the effect of oblique bending, since, with the proposed shape, additional deformations (in the horizontal plane) will always be directed towards the inside of the spring and be perceived by the workpiece. A spring is fabricated in such a way that its upper edge assumes a corresponding outline in the stressed state, released - it unfolds in accordance with its elastic, shells and surmountable resistances. The outline of the spring is chosen so that the spring gives the necessary distribution of the forces supplied by the levers on which it is suspended, i.e. spring thickness is not the same in different sections.

The conditions for the tightening and the very tightening process in the proposed machine are as follows. After the edges of the workpiece, gripped by the tongs, are stretched, forming some cone, the spring is turned by simultaneous movement of the sliders forward, is brought to the workpiece, the movement is straddling, the nose part (top) abuts the workpiece and begins to tighten the toe. Due to the delay of the apex and the continuous movement of the sliders 6, the sides of the spring also come into contact with the workpiece (the workpiece is tensioned by pliers). Due to the partial level | 9 in the fences $ | 1 and the lateral resistance and all the npi mifria is still moving forward, at the same time the pulling of the longitudinal direction of the longitudinal direction begins; 1 @ 1tsa with the workpiece inward, together with the tension pliers, with the “number of ticks increased. All of the scattering of vertices, 4 dln: shley preload. (| ULKO "eQ,. When the top stopped, the sides tightened completely, the process of puffing in any part of the garotet so that having prepared, tightened with pliers , it pulls the pulling Cplastic and goes to the Eramka block (more precisely the insoles), right left when the process continues, the plasticoz is squeezed through the edge and the plasticine is dispersed, and the workpiece is completely accelerated after which kl After the workpiece is patched, i.e., attached to the insoles, the spring retracts into place. A shoe, characterized in that, in order to better hold the workpiece in the shoe, as well as better distribution of pulling forces on different parts of the workpiece, it is made in the form of a spring plate 1 with unequal thickness in different sections and driven by means of levers 4, 5 and sliders 6. The subject invention. Device for tightening the workpiece on

fig ..

g i

4.