SU1461621A1 - Arrangement for screwing down bolts - Google Patents

Abstract

The invention relates to mechanical engineering, machine-tool construction and instrument-making, in particular to the mechanical assembly production in these areas. The purpose of the invention is to increase reliability during operation. The device comprises a frame 1, guide rods 2, a storage hopper 3, a pneumatic cylinder 4 rigidly connected with. bed frame. The pneumatic cylinder rod 4 is connected to the cylinder 5, inside of which is located the spring 6 of the holder of the wrenches 7. A pneumatic cylinder 8 is fixed to the pneumatic cylinder rod 5, on which the guide pins are fixed and the radial grooves are pulled out. On the holder of the wrenches 7, there are fastened wrenches 9, pressurized chucks 10 with a return spring 11 and an additional cam 12. The feed tubes 13 with the spring cutters 14 installed in the holes leave the storage hopper 3 and the jig 8 mounted on the brush 15 of the cylinder 5 has a device relative to the flange 16 by means of pins. In the slots of the conductor 8, slides 17 are fitted with guide holes for the bolt and slots for its release when retracting sliders, which are connected by means of levers 18 with an additional cam 12. At the same time, arms of levers 18, contact 4 O)

Description

Turing with a cam 12 is spring loaded with a spring 19, and in the holes for the bolts in the sliders 17 are installed springs 20 of a flat shape. Levers 18 are fixed on wasps x in glass 21 fixed on the jig 8. 3 Il.

one

The invention relates to mechanical engineering, machine-tool construction and instrument-making, and in particular to the mechanical assembly production in these areas.

The purpose of the invention is to increase the reliability in service during operation by realizing the kinematic connection of the sliders with the cam of the control of the cutters by means of compliant levers.

FIG. 1 shows a structural diagram of the described device; in fig. 2 is a section A-A in FIG. 1 (resistant plate with sliders); in fig. 3 is a section BB in FIG. 1 (cut-off, holding the bolt from falling out).

The device comprises a frame 1, guide rods 2, a storage hopper 3, a pneumatic cylinder 4, rigidly connected to the bed, the rod of which is connected to the cylinder 5, inside which is located the spring 6, the holder 7 of wrenches, the jig 8, n, and guide rods secured and radial grooves made. On the holder 7 of the wrenches, there are fastened wrenches 9, carrying the cartridge 10 with the return spring 11, and an additional cam in the form of a sleeve 12. The feed tubes 13 with the spring cutters 14 made in the form of a hopper 3 emerge from the storage hopper 3 U-shaped springs with a curved upper strap.

The cylinder 5 is connected by a rod 15 to a conductor 8, which bases the device relative to the flange 16 by means of the dowel pins. The slides 17 are located in the grooves of the conductor 8 and are provided with bolt-guiding holes and grooves for the bolt to exit when the slider is removed by the levers 18 and the spring 19, which have an inner diameter larger than the cam sleeve. When returning to the initial position, their guide holes are filled with bolts that are kept from falling into the indicated slots of the sliders with incomplete ring springs 20. The levers 18 with rounded ends, which ensure the transfer of force from the spring to the slide normally to its surface, excluding the pressing of the sliders by springs, mounted on the glass 21 and serve to move the sliders 17 to the position of loading the bolts into the holes on the flange of the part 16, where

the screws for the heads are captured by the cartridges 10. The cup 21 is fixed on the jig 8, and its upper part serves as a cam for controlling the cutters.

The operation of the device is as follows.

After installing the flange on the assembly, when the device is in the initial position, the bolts from the storage hopper 3, the open spring cut-off devices 14 (when the cut-off devices do not fit the curvilinear top plate to the surface of the bowl 21 and the ends of the cutter spring are separated) are fed into the guide holes of the slide blocks 17, and are prevented from falling into the slot of the slide of an incomplete annular

spring 20. When air is supplied to the pneumatic cylinder 4, its piston begins to move downward, moving along the three guide rods 2 the holder 7 of the wrenches and the jig 8 relative to the stationary feed tubes 13, allowing the bolts 13 to completely come out of the feed tubes 13 21 acts on the curvilinear upper bar of the pruner 14, increasing its curvature, the ends of the pruner springs converge, the compartment during this movement from falling out of the subsequent bolts, holding them by the heads.

The joint movement of the device assemblies is stopped when the jig 8 rests

in flange 16, base the device with the sinking pins, which fall into the pin holes of the flange 16. Holder. 7 wrenches are approaching the conductor 8, the pin 15 is moving inside the cylinder 5, compressing its spring 6, the cam sleeve 12

with its end, it presses on the levers 18, which compress the compression spring 19, and with the second end move the sliders 17 together with the bolts along the grooves in the support plate to the position where the bolts are threaded ends

they fall into the holes of the flange and are installed opposite the threaded holes, and the heads are placed under the cartridges of 10 wrenches. Upon further movement of the holder 7 of the wrenches, the cartridges capture the bolts, the return springs are compressed 11

cartridge 10, thereby providing each bolt with an autonomous feed in the process of wrapping. Levers 18 at one end continue to slide along the side surface

cam sleeve 12 until its diameter decreases, and cam sleeve 12 freely enters the compression spring 19. Soskivka from the side surface of the cam sleeve 12, the levers 18 are released and under the action of the compression spring 19 tends to return to its original position the sliders 17, in which the incomplete ring springs 20 are unscrewed, leaving the bolts in the nut sockets. On command, the wrenches 9 are turned on, and the bolts, guided by the openings of the flange 16, are fed up and wrapped in the part. After the bolts are tightened, the air supply to the nutrunners 9 is shut off, a command is issued to release air from the lower cavity of the pneumatic cylinder 4 and the air supply to the upper cavity. Installation is reset. Here, the cam sleeve 12 releases the springs of the trimmer 14 and the bolts fill the holes of the sliders 17. The process repeats. In case of unscrewing the bolt into one of the threaded holes

Aa

the device is broken and the flange bolt 16 is removed from the work position.

Claims (1)

Claim device containing a frame with a storage hopper attached to it, from which the feed tubes with cutters and the linear movement drive of the screwing head are withdrawn, in series with which the linear movement of the jig with the sliders and the control cam are installed, which are kinematically connected to sliders characterized by that, in order to increase operational reliability, the kinematic connection of the sliders is made in the form of a cam attached to the jig to control the slam-shutter, on which x fitted levers, one end associated with the sliders, and the other end is a spring-loaded schies in contact with the additional cam fixed to the screwing head. sixteen. FIG. 2 FIG. d 5-5