SU719930A2 - Device for controlling thread guiding motion - Google Patents

Description

The invention relates to the textile industry, in particular, to the mechanisms for laying out yarns for spinning and twisting machines; hydraulically driven. According to the main auth. St. No. 636166, a device for controlling the thread picker is known, which has a rocker mechanism, the slider of which is equipped with a double arm mounted on a rack and is connected with the cam of the pickup cam and is attached to the cam of the cam follower. In this case, the cams have individual engines. A disadvantage of the known device is the slow derailing and braking of the ring bar in the extreme positions. In addition, the device does not include an automatic control element of the pick-up mechanism, which ensures that the annular plank is lowered to the filling roller level after the pack life or at any stop of the machine. The aim of the invention is to increase the reliability of the device. This goal is achieved by the fact that the cam, the pusher of which is mounted on the wings, has curvilinear groove guides located on its front surface, one guide rail being closed and has two straight lines located along the radius of the section, and the other The mates are curves, one such curve is connected with the closed contour of the first guide through the straight sections, and the other curve is connected with the external contour, the cam, while the pusher is spring-loaded. FIG. 1 schematically shows the device; in fig. 2 - cam layout. The device includes a hydraulic booster with a spool 1, connected to the engine 2, on the shaft, which is equipped with gears 3, connected to the ring bar 4 of the rail 5. On the hydraulic shaft 71993O

The wheel is fixed to the gear wheel 6, which is in engagement with the rail 7. The rail 7 is pivotally connected to the link 8 connected to the pusher 9 and 10. The finger 11 is attached to the pusher 9, and the input of the pusher 10 is connected to the slot of the cam 12. 12. 13 through. Pack 14. The cams 13 and 12 are driven by the engines 15 and 16. On the pusher 9 there are two springs 17 10, which are equipped with an equalizing state of the pusher 9. in the middle position.

The pickup cam 12 (Fig. 2) consists of working (diO-i) and auxiliary ($ 2) curvilinear grooves 15 guides.,

The working groove guide (i g) is inserted with two smooth closed loops connected by radial straight-line sections (C t and 20

WITH,)...::.- .-..--.-;; -; ;

Bolt groove grooved

{cTj (Tj,) is connected to the working groove guide in the straight-line sections (C |, C) and has two smooth contours,; 25 din of which (cTj,) is open, and the other {cTj) is closed. . „;:,

The device works as follows. .: / ;;,:;:;.:,; -,,::;.;., ";:;:,;; ...:.:.; ,,: .-;: -.;:, :.: r: .jV.i ..-; The hydraulic motor 16 rotates the pickup cam 12. When the cam 12 rotates clockwise, the pusher 9 slides along the working groove guides (LI), and the ring bar 4 performs a reciprocating motion. At the same time, when you push the pusher 9 in-groove guides of the cam layout 12, there can be a kinematic fit between them. In this case, the springs 17 are in the free state, and the pusher 9 receives translational motion. When the pusher approaches the linear sections {C, Cr), one of the springs 17 begins to work. A force closure between the pusher 9 and the cam 12 takes place 5 times, which ensures fast pusher 9 and ring 4. The pusher 9 moves from one groove to the other , thanks to which the ring plank 4 cOLES the reciprocating movement.

When the cam 12 is rotated counterclockwise and with the initial position of the pusher 9 on the slotted guide aj, the pusher 9 falls from the slotted guide Oj to the straight line section C, and then to the slotted guide O and slides along it until the ring strip 4 does not take its lower position, at the level of the fuel roller.

In the initial position, the pusher 9 is on the slotted guide and the pusher 9 crosses section C, and then passes one groove guide O and slides the slotted guide o and slides along it to the right side,) until the annular plank. 4 will not occupy the bottom; her position. The direction of movement of the cam 12 is changed using an electro-hydraulic circuit.

Claims (1)

Invention Formula A device for controlling the thread pickup mechanism according to the ed. Microwave NO 636166, characterized in that in order to increase the reliability of the device, the cam, the pusher of which is mounted on the wings, has curvilinear groove guides located on its front surface, and one of the guides is closed and has two linear radially arranged the other, the other directional guide represents two constricted curves, one such curve is connected to the closed contour of the first direction through the straight sections, and the other curve to the external contour of the cam, while m pusher is spring loaded. FIG. g