SU1416392A1 - Mechanism for stepped feed of flexible closed member - Google Patents

Abstract

The invention relates to mechanical engineering and m. Used for multipoint resistance welding machines. The goal is to increase the production of the mechanism. At the ends of the double-sided rod 3 of the two-sided power cylinder 2, two toothed rails 4 and 5 are fixed along the rod 3, the teeth of which are j / J 7/7 pointing in opposite directions. Gear rails 4 and 5 are in engagement with circumferential swivel elements mounted on parallel axes, made in the form of gear wheels 6 and 7, enveloped by a flexible closed body 12. On wheel axles 6 and 7, there are roller overrunning clutches having free rotation in one direction. On the outer collars 8 and 9 of these clutches, wheels 6 and 7 are mounted respectively. When the stem 3 moves to the right, the rail 5 moves to the right, rotating the wheel 7, the holder 9 clockwise. The yoke 9 rotates freely. The rail 4 is moved to the right, rotating the wheel 6, the holder 8 counterclockwise. The yoke 8, wedged by the coupling ball, transmits the rotation of the 13 overrunning clutches to the housing. Thus, the forward and reverse stroke of the rod 3 flexible body 12 makes two working stroke. 1 hp f-ly, 1 ill. yy5 // g (L Сл9 tUD 9

Description

The invention relates to the field of mechanical engineering and can be used for multipoint end welding machines.

The aim of the invention is to increase the productivity of the mechanism.

The drawing schematically shows the mechanism of step feed.

The step feed mechanism contains a distributor 1, a two-sided power cylinder 2 with a double-sided Stem 3i at the ends of which two gear racks 4 and 5 are fixed along it, the teeth of which are directed to opposite sides, i.e. are located with inverse symmetry with respect to the axis I-I of the rod 3.: Toothed rails 4 and 5 do not move

By way of 3 cylinders 2, the flexible member 12 takes two steps (working strokes), and the distributor 1 is switched only once.

This embodiment of the step feed mechanism allows the use of a reverse (idle) stroke of the cylinder rod as a working one; reduce (twice) the number of strokes of the cylinder to make a given movement, reduce (twice) the number of actuations of the control switches, reduce the consumption of energy carrier (compressed air) twice.

Fore Mula Invention 1. Step feed mechanism

z clutches with two rotary tooth-20 whom closed organ containing

35

The curved elements are gear wheels 6 and 7. The latter are mounted (have a blind connection), respectively, on the outer cages 8 and 9 of the roller overrunning clutches. On parallel 25 axes of bypass turning elements - asterisks 10 and 11, which bend around a flexible closed body 12, housings 13. And 14 roller overrunning clutches are installed. ,thirty

The step feed mechanism works as follows.

In the position of the distributor 1 shown in the drawing, the compressed air is directed into the cavity A of the cylinder 2.

The rod moves to the right, while the rail 5 moves to the right, rotating the wheel 7, the yoke 9 clockwise, the yoke 9 rotates freely relative to the housing 14, the movement of Q with the sprocket 11 from the shaft .3 and the lath 5 is not transmitted; the rail 4 moves to the right, turning the wheel 6, the holder 8 counterclockwise. The yoke 8, wedged with the overrunning clutch ball, transmits the rotation to the housing 13 and, accordingly, the sprocket 10.

Flexible unit 12 moves one more step (working stroke). Thus, on the forward and reverse course stock. Svyazy roller overrunning clutch.

Compiled by L.Rastorguyeva Editor O.Spesyvykh Tehred A.Kravchuk Proofreader M.Demchik

Order 4023/17 Circulation 787 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

two bypass rotary elements mounted on parallel axes of flexible flexible closed op two overrunning clutches, one of k is located on one of the axes of the rotatable gear element, a double-acting cylinder with a double-sided stem, except for the fact that the fur is equipped with two racks fixed to the stem along it, the teeth of which are directed in opposite directions, and the other is overrun by the coupling on the other axis, and the two sleeves have a free swing in one direction, while the rotary the gear element is filled in the form of a fixed axle of the gear wheel; shackle in engagement with a branching rack.

2. The mechanism according to claim 1, deviating from the fact that as the overrunning clutch fulfills the role and each gear wheel is mounted but on the outer cage, respectively

Svyazy roller overrunning clutch.

Two two-way clutches installed on parallel axes bypass swivel elements, bending around a flexible closed body, two overrunning clutches, one of which is located on one of the axes, two swivel gear elements and a double-acting ram cylinder with a double-sided stem, in order to increase the productivity of the mechanism, it is equipped with two toothed racks fixed at the ends of the rod along it, the teeth of which are directed in opposite directions, with the other passing the Ufta located on the other axis, and both couplings mean free stroke vrasche1she are free in one direction, wherein the rotary kazh- dsh zubchat1z second member is a gear mounted on the respective wheel axle locat; shtat in engagement with the corresponding rack.

2. The mechanism according to claim 1, characterized in that each overrunning clutch is filled with a roller, and each gear wheel is mounted on the outer cage corresponding to

Claims (2)

Claim 1. The step feed mechanism of a flexible closed body, comprising two bypass rotary elements mounted on parallel axes, enveloped by a flexible closed body, two overrunning clutches, one of which 25 is located on one of the axes, two rotary gear elements and a double-acting double-acting cylinder The difference is that, in order to increase the productivity of the mechanism, it is equipped with two gear racks fixed to the ends of the rod along it, the teeth of which are directed in opposite directions, with than the other overrunning clutch is located on a different axis, and both freewheel clutches have free rotation in one direction, while each rotary gear element is made in the form of a gear mounted on the corresponding axis, which is engaged with the corresponding gear rack. 2. The mechanism by π. 1, characterized in that each overrunning clutch is made roller, and each gear wheel is mounted on the outer race of the corresponding roller overrunning clutch. • C A L. Rastorgueva