SU733974A1 - Device for bending the tabs of lock plates - Google Patents

Description

The invention relates to the field of mechanical engineering and instrument-making, in particular to the mechanized assembly of various components and parts. A device for remote folding of lock washers is known, comprising a housing with a head, a screw drive disposed therein and an operating member made in the form of a lever with a hole mounted on an axis, one arm of which has a bent end for folding the washer 1. This device is used for folding only one antennae of the lock washer and using it to fold the antennae, for example, locking plates with four or more antennae, doesn’t provide high-quality hemming in an unproductive manner. The closest technical solution to the invention is a device for folding the antennae of the locking plates, comprising a housing, an air cylinder with a plunger, a jaw gripper, made in the form of symmetrically located levers hinged to each other and with the housing and interacting with the free ends with the plunger, and copier 12. The disadvantage of this device is that in the course of work, due to the small initial angle between the antennae and the plane of contact of the plate and performing the operation at one time, sikov, and, consequently, unreliable hundred bolts. The aim of the invention is to increase the fold quality and productivity. This goal is achieved by the fact that the device for bending the antennae behind (arm plates is provided with an additional lever; hinged at one end in the body, interacting with the free end with a copier, and the middle part with a plunger; , and the axes of which are parallel to the axis of the hinge of the additional lever, while the hinges connecting the arms to the body are spring-loaded in the direction of the longitudinal axis of the device, and the jaws are made in pairs and at different angles E) and work sites. FIG. 1 shows a device for folding the antennae of locking plates;

in fig. 2 is a view A in FIG. in fig. 3 - the same device in an intermediate position in which the gripping jaws are maximized.

The grip is made in the form of symmetrically located levers 1, 2 and 3 (see Fig.1), which are hingedly connected to each other. The levers 1 are mounted on spring-loaded supports 4, which are located in the housing 5. The ends of the levers 1 are placed in the lower groove of the plunger 6 (see Fig. 3). In the housing 5 on the axis 7 (see Fig. 2), the lever 8 is mounted, which by the spring 9 through the roles 10 is pressed to the plane of the copier 11. This determines the position of the roll against the antennae of the locking plates.

Building 5. The device is installed on axles 12 in supports 13, on which a copier is also rigidly fixed, sponges

14 grips are made with working platforms -15 and 16.

The device works as follows.

The pneumatic cylinder piston 17 is in the upper position and pad

15 sponge 14 is located in the zone of the antennae of the locking plates. When lowering the piston 17 of the pneumatic cylinder down half a turn, the plunger b turns the levers 1,2,3, and the sponges 14, by means of the pads 15, perform a preliminary hemming of the antennae. In this case, the possible asymmetrical arrangement of the antennae relative to the axis of the bolt is compensated by spring-loaded supports (see Fig. 1). With the further course of the piston, the levers 1 and 2, the passage of the bottom dead center, occupy a position symmetrically with the original. In this case, the levers 3 occupy the initial position.

During the downward movement of the plunger b, the lever 8 (see Fig. 2), being in the upper fixed position, maintains the position of the grips in the process of bending with respect to the pivot axis 7 When the plunger moves further downwards, when the jaws move away from the plate antennae, With the plunger pad b, the lever 8 is lowered and, interacting with the cam 11,

turns the grip to the second fixed position. In this case, the working platforms 16 of the jaws 14 are installed in the area of the antennae of the plate.

During the reverse movement of the piston, the gripping jaws work in the same sequence, performed the final folding of the antennae, and at the end of the stroke the plunger b retracts the deflecting lever 8, and hence the gripping to the original position. After that, the cycle repeats.

Claims (3)

1. Device for folding the antennae of the locking plates, comprising a housing, a pneumatic cylinder with a plunger, a grip with jaws, made in the form of symmetrically located levers, pivotally interconnected with each other and with the body and interacting with free ends with the plunger, and a copier, which is indicated by the fact that, in order to improve the quality of the bending and productivity, it is equipped with an additional lever, articulated one end in the housing, which interacts with the free end with a copier, and the middle part with the plunger and the supports, on which the copier and the articulated body are rigidly fixed, and whose axes are parallel to the axis of the additional lever hinge. 2. Device according to Claim 1, characterized in that the hinges connecting the levers to the housing are spring-loaded in the direction of the longitudinal axis of the device. 3. The device according to PP.1-2, of t L ich a y ee with the fact that the gripping jaws are made in pairs and at different angles located working sites, Sources of information taken into account in the examination 1. USSR Author's Certificate No. 579124, cl. In 23 R 19/08, 1976. 2. The author's certificate of the USSR 1 366054, cl. In 23 P 7/04, 1971 (prototype). . .1 I. ...., ... 733974 .fOf