SU812673A2 - Device for ejecting piece cargo - Google Patents

Description

(54) DEVICE FOR DROPPING OF PIECE CARGOES

one

The invention relates to devices for dropping piece goods from belt, slatted, roller conveyors, as well as for transferring piece goods to a number of located conveyors, and can be used in the woodworking and furniture industry, as well as in other sectors of the national economy related with transportation of piece goods.

According to the main auth. No. 565865, a device for dropping piece goods is known, which includes a lever pusher movable in a horizontal plane and a pusher drive made in the form of a screw with nuts mounted on screw sections having left and right threads to which the pusher arms l are attached.

The disadvantages of this device are the relatively large force that occurs in the screw at the moment corresponding to the initial position of the pusher, which is determined by the dependence

in ° IgTi

where P is the load pushed force;

J, is the angle of inclination of the levers to the screw in the initial position of the pusher.

As can be seen from the above dependence, at small values of the angle with the force F., and, consequently, the drive power of the device is relatively large. The devices have a relatively small pusher stroke, determined by its initial position. The design feature of this device is that

the pusher levers are in the initial position at a certain angle to the screw, since with the leverage flush of the levers in the initial position of the pusher corresponding to the dead center position, the device cannot work. This circumstance causes a relatively large width of the device in the initial position of the pusher. In addition, the disadvantage

the device is also the unstable position of the hinge four-door, including levers, pusher and nuts, when exposed to

Claims (2)

the pusher of the resulting load from the movable load, which does not coincide with the axis of symmetry of the pusher. The purpose of the invention is to increase the stroke of the pusher, reduce the size of the device in width and reduce power consumption. The goal is achieved in that the device is provided with a guide with bevels and a figured surface and fastened to the levers by means of axles with rollers mounted for interoperability with the bevels of the guide, and the pusher is made with grooves parallel to the axis of the screw in which the axes of the rollers are placed. In addition, the levers are made by two shoulders, the ends of which are free from the rollers and which are provided with fingers, which are installed with the possibility of rotation when interacting with the surface of the guide. In FIG. 1 shows schematically the device, a general view; 2, the same top view; in fig. 3 - then at the intermediate and final position of the pusher. The device circuit comprises a pusher 1 to which levers 3 are attached in pairs by means of axles 2. Axes 2, included in grooves 4 of pushers 1, are equipped with rollers 5 supported on bevels 6 of guide 7, rigidly connected to base 8. Levers 3 are pivotally connected with nuts 9 and 10, mounted on screw 11 sections with left and right threads and interacting with base 8. Screw 11 connected to an electric motor has the ability to rotate in the bores of bearings 12 fixed on base B. The levers 3 made two shoulders and on a small shoulder 13 secured us rotatably fingers 14 finds schies in contact with the shaped surface 15 of the guide 7, The length and shape of the surface 15 corresponds to the length and shape of the path of movement of the pins 14 during operation. The load is transferred from the conveyor 16 to the conveyor 17. The device operates as follows. The load, moving along the conveyor 16, acts on the limit switch, giving the command to turn on the electric motor connected to the screw 11, which, rotating, moves the nuts 9 and 10 towards each other towards the center of the screw. In this case, the levers 3, which are in the initial position parallel to the screw 11, begin to roll the rollers 5 along the bevels 6 towards the chain 7, and the axis 2, simultaneously moving along the slots 4, move the pusher 1. At the same time, the fingers 14 fixed on the small arm 13 of the levers 3, begin to roll along the figured surface of the guide 7. After the rollers 5 come out of contact with the bevels 6 of the guide 7 and the axles 2 reach the end of the grooves 4, the pusher 1 moves only under the influence of the levers 3. In this case, the load collides on roller conveyor ep pusher 17. When reaching one end position the fingers 14 abut the end surface 15 of shaped guide 7 and one of the nuts 9 or 10c that moment acts on the limit switch that gives a command for reversal of the rotation of the screw 11 and the pusher 1 is returned to its original position. The stroke of the pusher 1 is larger than in the known device due to the fact that in the initial position the levers 3 are arranged parallel to the screw 11 and the pusher 1 begins to move, respectively, from the position closest to the screw 11. For the same reason, the width of the device in the initial position is reduced, which makes it possible to use it in cramped conditions. The presence of an additional small arm 13 of the levers 3 with rotating fingers 14 mounted on it, which rolls along the shaped surface 15 of the guide 7, provides reliable stability of the levers 3 during the process of pushing or moving the load regardless of the point of application of the resultant force of the load to the pusher 1 .. Invention Formula 1. Device for dropping piece goods by auth.St. No. 565865, characterized in that, in order to increase the stroke of the pusher, reduce the overall dimensions of the device and reduce power consumption, it is equipped with a guide with bevels and a figured surface and reinforced with a roller mounted on the levers by means of axles with rollers that interact with the bevel of the guide However, the pusher is made with cages parallel to the axis of the screw in which the axes of the rollers are located. 2. A device according to Claim 1, which is leveled by the fact that the levers are made by two shoulders, the roller-free ends of which are provided with fingers that are mounted so that they can rotate when interacting with the shaped surface of the guide. Sources of information taken into account in the examination 1. Copyright of the USSR 565865, cl. B 65 G 47/38, 1975.