SU818860A1 - Wood-working machine carriage actuator - Google Patents

Description

one

The invention relates to devices for precisely moving the carriages of woodworking machines and can be used to supply workpieces or tools in the sawmill and woodworking industry.

Devices are known for moving carriages of woodworking machines, including a power cylinder, a valve with electromagite, a switching circuit of an electromagnet and an emphasis mounted on the carriage for closing a pair of current-carrying contacts connected to the switching circuit 1, 2.

A disadvantage of the known devices is the presence of dynamic loads when the carriage stops.

The purpose of the invention is to reduce the dynamic loads when the carriage stops.

This is achieved by the fact that the device is equipped with a paddle cylinder, on the shaft of which a double-arm lever is mounted, with one current-carrying contact fixed on one of the arms of the lever, and the other current-carrying coitact is made arcuate and located on the path of movement of the lever arm having the current-carrying contact.

FIG. 1 shows a device for moving a carriage; in fig. 2 - section

A - A of FIG. one; in fig. 3 - section bb FIG. 2

The device contains a power cylinder 1 with a spool 2, a carriage 3 with a stop 4, which is restrained by a sliding stop 5 by means of an electromagnet 6. Before the stop 5 there is a double-arm lever 7 mounted on the shaft of a pneumatic cylinder 8, which consists of a housing 9, inside whose shaft 10 rotates with a rigidly fixed blade I. On one of the arms of the lever 7 a load is movable when adjusting

12 and the current-carrying contact 13, which, together with the stationary arcuate current-carrying contact 14 interacting with it, is connected to the spool 16 of the spool electromagnet through an electrical switching circuit 15. On the second arm of the lever 7, for the free passage in the opposite direction of the stop 4, there is provided a pivoting stop 17 pressed by the spring 18 to the rigid stop 19.

The device works as follows.

When the carriage 3 approaches the anvil 5, the anvil 4 contacts the lever 7 and deflects it by a certain amount. With this contact

13 for some time, depending on the speed of movement of the carriage 3 and the position of the load 12, closes with the arcuate contact 14 and through the electrical switching circuit 15 for the same time turns off the coil 16 of the electromagnet 2 of the spool 2. Reverse occurs for a short time of the power cylinder 1, driving the neck to braking the carriage 3. The paddle pneumatic cylinder 8 provides for the return of the lever 7 to the initial position, and also, together with the load 12, serves to adjust the degree of deflection of the lever 7. When the lever 7 is deflected to the initial position, it opens Pins 13 and 14, the plunger of the spool 2 returns to its original position and the stop 4 of the carriage 3 presses against the extendable stop 5, ensuring rigid fixation of the carriage 3. When it is reversed, the stop 17 deflects and provides easy access without braking.

Claims (2)

Invention Formula A device for moving the carriage of a woodworking machine, including a cylinder, a spool with electromagnets, an electromagnet switching circuit and a stop mounted on the carriage for closing a pair of current-carrying contacts connected to a switching circuit, characterized in that, in order to reduce the dynamic loads when the carriage stops, it is equipped with a vane cylinder, on the shaft of which a double shoulder is mounted a lever, with one current-carrying contact fixed on one of the arms of the lever, and the other current-carrying contact is arcuate and located on the path of movement of the lever arm having a current making contact Sources of information taken into account during the examination 1. USSR Author's Certificate No. 545464, cl. In 27C 5/04, 1975. 2. USSR author's certificate No. 161117, cl. At 27B 11/04, 1964. ZM Lv 1 W ////// A A