SU471933A1 - Grab feeder - Google Patents

Description

one

The invention relates to the field of press-forging equipment and can be used to feed blanks to presses.

A grabber feeder is known, for example, to a press, which contains monitors in the Liiyaki case with grips for the supplied blanks, mechanisms for the longitudinal and transverse movement of the rulers, made in the form of cams mounted on the camshaft, and an intermittent motion mechanism associated with the transverse movement mechanism rulers

The purpose of the invention is to increase the penetration rate of the device.

For this, the intermittent motion mechanism is mounted on the camshaft, the cam of the cross-section mechanism of non-reassuring of the rulers is mounted on the latter freely, and the device is equipped with a fixture rigidly fixed in the housing, acting on the cam of the transverse-displacement mechanism of the rulers during reverse rotation of the camshaft.

The mechanism of intermittent movement is made in the form of a clutch rigidly mounted on the distributor shaft of the internal cam of the mechanism for moving the rulers, which bind them spring-loaded paws.

FIG. 1 schematically shows a grab device without a side wall; in fig. 2 - the same, top view without a housing cover; pa fng. 3 shows a section A-A in FIG. 2; on . 4 shows a section along the line B – B of FIG. 3

The grab lnaykp 1 devices are located on carriages 2 and 3. On the right side, the grab rulers (see fng. 2) have alignment grooves in which the projections 4 of carriages 3 enter, and on the left (see fig. 3) they are reinforced slats 5, having T-shaped and entrails in carriages 2. Carriages 2 nasazheny on ciliidric guides 6, fixed in the housing 7. On carriages 2 reinforced springs 8 springs 8 levers, which together with the levers 10 m are seated pas 10 rollers 11. Carriages 3 zakreileny in T-shaped guide crown1 12. Rails 5 are included in the link with 13, located on the splines of the gear shafts 14 mounted in the housing 7 and interacting with the rails 15 of the frame pusher 16, which has cylindrical and deflecting elements 17 fixed in the housing 7, and the rollers 18 interacting with the cam 19 of the longitudinal movement of the rulers. This cam is rigidly set on the splines of the camshaft 20 connected via I1 sterns 21 to the piston rod 22 of the power cylinder 23. The cam 19 has a symmetrical, y-y axial axis (see Fig. 4)

the profile, which is conventionally broken, and the angles a, p, Y-U1ol tt correspond to the dashboard rulers in the initial position, and the angle v to the final operating position, since the arcs of the profiles enclosed in them are concentric. Angle p corresponds to the movement of the rulers in the longitudinal direction. On the clutch 24, rigidly fastened on the shaft 20, the cam 25 of lateral movement of the rulers, on which there are spring-loaded pawls 26, included in the ledges of the clutch 24, and the slots for the spring-loaded locking device 27, is free to rest. On the track of the cam 25 slides in the guide chassis 7 pushers 28. The cam profile is symmetrical to the axes of the xx and they and broken conditionally into angles a, p, y. The angles a and v correspond to the movement of the rulers in the transverse direction, and the angle | 3 stands with their longitudinal displacement. The profiles of cams 19 and 25 are interrelated as follows: the phase angle of lowering cam 25 is no more than the phase angle of cam 19, and the phase angle of cam cam 25 is not less than the phase angle of lifting cam 19; the phase angle of lift at the cam 25 is not more than the phase angle of the height Y of the cam 19.

The work is carried out as follows.

In the initial position (see Fig. 2), the pushers 28 are located on the protrusions of the cam 25 (lines 1 are moved apart), the frame pusher 16 and the clamshell lines 1 are respectively in the extreme right and left positions. At the working stroke of the ram 23, with the rail 22, the distributor shaft 20 rotates together with the gear 21 together with the cams 19 and 25 but 180 ° clockwise (see Fig. 4, 1). The cam 25 is engaged with the shaft 20 by means of the clutch 24 and dogs 26. When the shaft 20 rotates at an angle and the protrusions of the cam 25 come off the pushers 28 and the levers 9 and 10 by the springs 8 shift the carriages 2 and 3 together with the rulers 1 respectively along cylindrical 6 and T-shaped guides of housing 7 and brackets 12.

Together with the carriages, they move in the transverse direction of the gear 13 along the splines of the shafts 14. In this case, the parts are clamped by grippers (not shown) of the grab bars 1. The cam 19 rotates at an angle of rotation at this angle, thus the frame plunger 16 the clamshell clamps connected to it through the rack pairs 14, 15 and 13, 5 remain un-motionless. When the shaft 20 is turned by pa and the angle p, the pushers 28 slide along the co-ititic circle of cam 25, leaving the ruler 1 closed, and the cam 19 is rotated at an angle p at this, moving the rammer pusher 16 to the left (see Fig. 2 and 3) . The pusher at the same time moves through the rack

pairs 14, 15 and 13, 5 clamshell 1 with the clamped parts in the longitudinal direction to the right and the value of the feed step. When the rotation of the shaft 20 at an angle v, the protrusions of the cam 25 are located on the pushers 28, which through

Levers 9 and 10 push apart carriages 2 and 3 with clamshell 1, retraction grips from the working area of the tool. The cam 19 at this m. Angle of rotation has a phase angle of high V, and the frame pusher 16 with longitudinal

1 remain fixed in the longitudinal direction. After the grippers leave the working area, the tool is turned on for a working stroke, and the ram 23 of the clamshell device is retracted. At the opposite

(idle) during the power cylinder 23, the shaft 20 with the cam 19 fixed on it rotates counterclockwise, returning the plunger 16 and the ruler 1 to its original position in the longitudinal direction.

When etodm, the cam 25 slides freely on the clutch 24 of the shaft 20, remaining stationary under the action of the latch 27. The vials with the grippers remain in the extended state.

Subject invention

Claims (2)

1. A grab-bearing device, for example, to a press containing rulers mounted in the housing with grippers for the supplied blanks, mechapisms of the longitudinal and transverse movement of the rulers, made in the form of cams mounted on the camshaft, and the mechanics of the continuous movement associated with the knocking mechanism rulers, characterized in that, in order to increase productivity, the intermittent motion mechanism is mounted on a distribution shaft, the cam of the lateral movement mechanism of the ruler the shaft is free on the same shaft, and the device is rigidly fixed to the device in the housing with a retainer acting on the cam of the mechapism of the transverse movement of the sticky sticks during the reverse rotation. camshaft. 2. A device according to claim I, characterized in that the intermittent movement mechanism is made in the form of a coupling rigidly fixed on a camshaft inside the cam of the mechanism for moving the rulers, and spring loaded dog dogs. 5 a - ij I I / I 15 13 18 figure 1 6 W H 20 51E at 2 16 18  n / And M U / / / -J7 QlД W ) / I I ( III / /  / Fr / F T / b rt T 28 5 fj 2 7 b  I //  11 12 10 / J / N 4 J f  I / jd: fi 13 5 1 it П 15 16 6 8 1 A-A, / /