SU43712A1 - Stretching machine - Google Patents

Description

Already known are devices for stretching the skins with the use of plates that are sliding in different directions, controlled by means of a screw.

The present proposal also consists of a sliding table, but to strengthen the skins on it, instead of nails or clamps, metal plates are used, and both halves of the table are made in the form of electromagnetic plates.

In FIG. 1 is a front view of the machine; FIG. 2 is a side view and FIG. 3-top view of the machine.

The proposed machine is equipped with a table consisting of two electromagnetic plates 8, 8 that can move and move apart from each other with the help of a lead screw 3 by means of a gear 17, 4, 5, П, 13. 14, 15 from the drive shaft 16.

On the electromagnetic table 8, 8, there is a skin 18 (indicated by a conventional line), on the edges of which there are applied pressure plates 9 of soft steel in the amount of several pieces. The hardening of the skins is accomplished by turning the handle 19, which connects the electromagnet to the DC power source.

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After turning on the electromagnet, turn the handle 20 to the right side. Since the handle is connected directly to the lever 12, with which the clutch 7 moves to the right side, and with its teeth enters the clutch with the gear 11, which rotates the spindle screw, the plates 8 and 8 will therefore evenly diverge. After sufficient stretching, the skins turn off the electromagnets and rotate the handle 20 to the left side, with the result that the plates 8, 8 are returned to their original position. During this period, the skin is rotated by 90 ° and the current is turned on again (turning the handle 19), after which the skin will be stretched in two mutually perpendicular directions.

The subject matter of the invention.

A machine for stretching the skins using a sliding table driven by a mechanical drive, characterized in that, in order to strengthen the skin 18 on the table 8 with the help of metal plates 9, the table is designed in a two-way sliding electromagnetic plates.

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