SU148610A1 - Perforator drive - Google Patents

Description

Punch actuators are known that are used to perforate information cards to computing machines, comprising an electric motor, control electromagnets, and a force transfer mechanism to a punch.

Known perforator drives have a number of drawbacks: they are made with a significant number of moving parts that create noise, have a large drive mass and limited speed of operation.

The proposed drive of the perforator does not differ from the known ones. In order to increase the permissible speed of perforation and reduce the mass of moving parts, the force transfer mechanism contains a tubular body, eccentrically mounted on a rotating shaft and balanced with counterweights, with a spring designed for elastic securing the tubular body and eliminating its rotation, and connecting links controlled by electromagnets to transfer force from the tubular body to the punch when the corresponding magnet is turned on.

In order to simplify the design and force the return movement of the punches to the quiescent position, the drive contains a series of clips, the upper ends of which rest on the tubular body, and the lower ends are connected to intermediate links associated with the punches.

FIG. Figure 1 shows a punch drive, which is controlled by; , the movable parts are in a state of rest, the eccentric is in the upper position; in fig. 2 is the same side view; in fig. 3 is a longitudinal section of the drive shaft; in fig. 4-piece suspension tube anti-roll; in fig. 5-option device-return link.

On the drive shaft 1 (Fig. 1), along a number of slotted punches, with the help of ball bearings on two eccentrics 2 (Fig. 3)

No. 148610-2, the tubular part 3 is located. The drive shaft / with bearings 4 rests on the body of the perforator. On the drive shaft are bodies 5 for balancing all masses eccentrically located on it. Balancing weights can also be located on the drive shaft between the support bearings 4. Under the drive shaft, set the yoke 6 with the splines 7, in which the connecting links 8, which are hingedly attached to the crankshafts, interfere. The latter are raised on the axes fixed in the ribs of the bed, and guided by them. In a quiet state, the connecting links 8 with their shoulders 10 abut against the plane of the bevel 11 of the cross beam 6. The cross arm 6 has a groove 12 for locking the links 8 in the working position. The connecting links have a lifting bevel 13 to complete the lifting to the working position. Under the connecting links there are intermediate links 14, also guided by a cross-beam, which transmit movement to the punches 15 to penetrate the holes and return them to their original position. The open reciprocating brackets 16 with their fonts 17 capture the intermediate links 14 and come in contact with the tubular body from the opposite side with respect to the intermediate links 14 in order to return the latter.

In order that the intermediate links 14 not only press down the ends of the punches 15 for the purpose of perforation, but also return to their original calm state, the lower ends 18 of the intermediate links 14 are jaggedly protruded from the side, the punches 15 are caught. The punches are guided a guide plate 19, under which a small gap for skipping the perforation map is the matrix 20. At the top, the return bracket is guided by a slit comb 21.

Another embodiment of the return links is shown in FIG. five.

In this case, the return links 22 have a closed shape, symmetrical in length; at three points they are guided in spline combs 23, Bisepxy grams are connected to a pivot link 24; the latter is hinged in the crossbar of the 25th bed.

Each clip 16 and, respectively, the return link 22 are kept at rest with the aid of a spring 26. For each punch, one connecting link 8, one intermediate link 14 and one return link 22 are provided for such a punch.

The controlled connecting links 8 are brought into working position by means of electromagnets 27. Due to the close arrangement of the punches, the electromagnets 27 are installed in three rows of two, so that all gears have the same gear ratios and friction conditions. Each magnet of the electromagnet is rigidly connected to the lever arm 28, which is relative to each of the three rows in the same position and rotates around a rotation axis 29 common to all three rows. The levers 28 using a common hinge 30 and through the connecting rods 31 and the crank levers 9 are connected to the controlled connecting links 8.

In order to prevent continuous rotation of the tubular part 3, it is mounted on two eccentrics using bearings and rigidly connected to a lever 32, which can be deflected between two stops 33. The lever 32 at one point in opposite directions pulls off two springs 34 to hold the tubular item 5 is on average, elastic, non-sparking (floating) position so that at peak loads (acceleration during the reciprocating movement of link nodes of several punches) on the contact planes provide a light rolling of controlled parts (Fig. 4). In order to provide easy rolling during peak loads, it is advisable to divide the tubular part into several parts in a direction perpendicular to the longitudinal axis.

After start-up, its perforator, which includes a drive unit, the drive comes in continuous motion, and with it the drive shaft 1 with an eccentric tubular body located on it; at this time, the other working parts remain stationary. If perforation of the holes requires data sampling, then during the return stroke of the tubular part 3 from the lower position to the upper one, electromagnets 27 are excited, and thereby the connecting links 8 move from the left rest position (Fig. 1) to the right operating position (Fig. 5 ). At the same time, the connecting links 8 as a result of raising their shoulder 10 along the bevel plane, and by the end of the movement along the plane of the bevel 13 on the connecting links themselves are raised and held in this position. Towards the end of the movement, the shoulders 10 are opposite the groove / 2, and the upper plane 55 of the connecting links comes into contact with the outer side surface of the tubular part 3. While the latter, in accordance with the eccentric position, moves downwards during the working stroke the connecting links 8 and the intermediate links 14 are pressed downwards and the card 36 is perforated. During this process, the shoulders 10 of the connecting links 8 are clamped in the groove 12 and thereby locked. During the return stroke, the clamp 16 and the return link 22 transmit return movements to the punches 15 through intermediate links 14. Approximately halfway up, the shoulders 10 of the controlled connecting links 8 leave the groove 12, and with the help of springs 37 acting on the lever arm 28, they return in the left rest position, unless the same punches are included in the reverse feed. In the latter case, as a result of the excitation of the corresponding electromagnets 27 by the Topnoio, the connecting links remain in the working position.

Subject invention

Claims (2)

1. A rotary actuator containing an electric motor, control electromagnets and a force transfer mechanism. A die is characterized in that, in order to increase the permissible perforation speed by reducing the mass of moving parts, the force transfer mechanism comprises a tubular body eccentrically set on the rotating shaft and balanced counterbalances, a lever with a spring designed for the elastic fastening of the tubular body, the elimination of its rotation, and connecting links controlled by electromagnets to transfer force from the pipes atogo body punch to the CID is turned on the corresponding electromagnet. 2. The device according to claim 1, characterized in that, in order to simplify the design and force the return movement of the punches to the quiescent position, it contains a series of brackets, the upper ends of which rest on the tubular body and the lower ones are connected to the intermediate ones. bonded with punches. - 3 148610 2S 0 "g .. us.2 / L / / Mind Fig. 3 nineteen