SU1648743A1 - Device for screwing up nuts - Google Patents

Abstract

The invention relates to mechanical engineering, machine-tool construction and other industries, where the assembly of threaded connections with nuts is carried out. The purpose of the invention is to increase productivity. The screwdriver contains a bed 1 mounted on it feeders with feed trays and tubes 18, a pneumatic cylinder of linear movement of the holder 2 with wrenches 3 and 4, ending with key nozzles 5, spring-loaded springs 6. The holder 2 is fixed with a copier 7 and pneumatic cylinders 8 with rods 9 and springs 10. The rods 9 are fixed in plate 11. which has a window with guides 12 of the slide 13 in the form of two jaws, each of which has recesses in the form of semi-flats, which, when pressed together, form a socket a washer, a nut and a lower part of the nozzle 5 as well as a channel for feeding nuts and washers. The slider 13 is held on the guides 12 by means of the slats 14. On the plate 11, the orienting stops 15 are fixed, and the jaws of the slider 13 are compressed by springs by means of the rods 17. 3 sludge.

Description

The invention relates to mechanical engineering, machine-tool construction, instrument-making and other industries in which threaded joints are assembled using nuts.

The purpose of the invention, an increase in productivity, is achieved by using computer time to free the assembled joint from contact with the sliders by means of a new constructive implementation of the sliders.

FIG. 1 shows a screwdriver; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one.

The screwdriver contains a bed 1, feeders mounted on it with feed trays, a linear movement pneumatic cylinder of a holder 2 with nut wrenches 3 and 4, ending with key nozzles 5, at the ends of which there are external and internal fitting cones, an internal cylindrical juice and six-sided holes under the nut. The nozzles 5 are spring-loaded springs 6. The holder 2 has a reciprocating movement S along the guides of the frame 1, a copier and pneumatic cylinders 8 are fastened to the base, from which the rods 9 come out, with the springs 10 and fixed in the plate 11. The plate 11 has a window with 12, in which slider 13 slides, made in the form of two jaws, each of which has recesses in the form of half-holes and side grooves, which, when pressed,

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friend form a nest under the washer and nuts and the lower part of the nozzle 5, as well as a channel for feeding nuts and washers. To hold the sliders 13 on the guides 12, slats 14 are attached to them from below, having half-holes that, in the pressed position, form holes that are somewhat larger than the threaded hole. The plate 11 has orienting stops 15. The sponges of the slider 13 are pressed to each other by springs 16, fastened to the rods 17, oriented in the center of the square groove of the plate 11 opposite the nozzle 5, resting against the tubes 18, the feed washers and nuts. The tubes 18 have a rectangular cross section and enter a channel made in sliders. For pushing the nut 1 out of the nozzles 5, there is a spring 19. The assembled assembly consists of parts 20 and 21 with studs (bolts) 22.

The device works as follows.

In the initial position, the assembly having the fastened parts 20 and 21 with the nuts tightened is removed and the next assembly is supplied. The rods 9 push down, feed the washers and nuts 1. The nozzles 5 lower end enter the seat formed by the jaws of the sliders 13, excluding the nut and washers from falling out of the socket when they are released from the tubes 18 to the slider 13 even when the device for tightening the nuts is at an angle . After that, the holder 2. movably on the bed 1 with the nutrunners 3 and 4, lowers until the contact 15 with the part 21. The studs 22 enter the holes of the bars 14, the passage through the washers and clamp the nut to the ends of the nozzles 5. With further lowering the holder 2 moves closer to the plate 11, the rods slide into the pneumatic cylinders 8, while the nozzles 5, lowering the inner cone, orient the nuts 1 relative to the 12 jaws 13 on the guides, pressed to each other by springs 16. fixed to the rods 17 and, therefore , rel respect to the axes of pins 22. The nuts are within the cylindrical nozzle of juice 5, orienting them with nuts on the studs zhivlenii HA 22 at the initial time of rotation of wrench, and then the nuts

enter the hex hole of the nozzles 5 and are pressed against the ends of the studs 22 under the action of springs 6, which, squeezing, provide an autonomous supply of nuts when

screwing up. Simultaneously, the copier 7, lowering, pushes the sponges of the slide 13 apart. Frees up the space around the nuts to allow rotation of the nozzles 5. Then the command is given to turn on the wrenches 4, the nuts are screwed on, and then the wrenches 3 and 4 are turned off. Air is fed into the lower cavity of the pneumatic cylinders 8 to hold the jaws of the slider 13 in the extended position, excluding the gripping of nozzles 5 with the jaws of the slider 13 when lifting the device, which can lead to breakage of the slider 13. The conveyor removes the finished unit and supplies the following position after the what command is given to

the release of air from the pneumatic cylinders 8 The rods 9 are pushed down by the action of the springs 10, the actuator is in the initial position. Washers are supplied, then nuts are fed through tubes 18 and a channel made in

the slider 13, in the sockets formed by the jaws of the slider 13. The cycle is repeated. In case, for any reason, the nut did not turn on the pin 22 and remained in the socket of the nozzles 5, in order to prevent the

device and malfunction, an ejector spring 19 is provided.

Claims (1)

Invention Formula A screwdriver containing a frame, feeders mounted on it with feed trays, pneumatic cylinder of linear movement of wrenches with spindles and key nozzles The vt cylinder for moving the plate, which is connected with the guides - the cylinder rods for moving the plate, while on the holder is fixed a copier for interacting with sliders, characterized in that. that, in order to increase productivity, the slides are made in the form of two jaws with half holes in the form of nuts, washers and key nozzles and with slots for orientation of the jaws. $ /// //four / g Ig Ig Phie.1 Ub