SU891335A1 - Device for automatic orientation of threaded pieces - Google Patents

Description

(54) DEVICE FOR AUTOMATIC ORIENTATION OF THREAD DETAILS

I

The invention relates to a machine tool industry and can be used for orienting and dispensing threaded rods with the desired end with threads of different pitch.

A device for automatically orienting threaded parts, a means of controlling the threaded element of the part, and trays for loading and unloading parts are known.

The automatic orientation of the studs is carried out by means of rotating threaded rollers, which, upon contact with the studs, axially move and fall out into the output tray with the required end 1.

However, the need to match the threaded profiles of the rotating rollers and the stud freely located in the orientation zone limits the speed of rotation of the rollers and reduces the productivity of the device.

The purpose of the invention is to increase productivity and simplify the device.

This goal is achieved in that the control means is made in the form of a chamber equipped with a guide sleeve, connected to a chute for loading parts, mainly studs having threads of different pitch at the ends, and a ring with tangentially positioned nozzles.

Moreover, the ring is made replaceable, and the holes of the nozzles of the ring are located along a helix, the elevation angle of which corresponds to the elevation angle of the helix of the threaded element.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The device consists of a control chamber 1, a tray 2 for loading parts, a loading hopper 3 with a cutter 4 (FIG. 3), trays 5 for unloading parts equipped with a movable stop m 6, and a pneumatic cylinder 7 for feeding parts (pins) 8 with a pusher.

Claims (3)

IS The control camera is equipped with a guide bushing 9 made as an aerostatic support with channels 10, a ring 11 and a photosensor 12 of the position of an orientable stud 8. The position sensor 12 is installed 20 in an actuator control circuit (not shown) that specifies the position of the abutment 6 depending on signal coming from him. The ring 11 contains tangential nozzles 13 (FNG. 2) located along a helix, the angle of elevation of which corresponds to the elevation angle of the helix of the thread of a larger pitch. The size of the gap between the hole diameter of the ring 11 and the outer diameter of the smooth part of the stud is chosen in the same order of magnitude with a tolerance on the diameter of the stud and must provide a fit in conjunction. The compressed air is supplied to the device from the distributor through the air line 14. The device operates as follows. Orientable hairpin 8 is fed from feed hopper 3 to underwater tray 2 connected to control chamber 1. Pusher of air cylinder 7 hairpin is mixed into sleeve 9 and ring 11. occupy initial position for orientation (Fig. 1). During the return stroke, the pneumatic cylinder 7 is pushed into the direction of the sleeve 9 and the ring 11 is supplied with compressed air through line 14. The airbag formed in the cavity of the sleeve 9 supports the orientable part, eliminating contact with the walls of the sleeve. In this case, the air flow resulting from the nozzles of the ring 11 forces the pin to run in on the inner surface of the ring. Further operation of the device is determined depending on the size of the thread pitch of the end of the pin found in. control chamber. When the stud is fed by a threaded part with a large pitch corresponding to the diameter of the nozzles of the ring 11, a screw channel is formed along the thread of the thread to allow compressed air to flow. The process of screwing the stud into ring 11 occurs, and the stud is moved into the control zone by the position sensor 12, which outputs a signal in the actuator control circuit. The actuator shifts the stop 6 to the right position (Fig. 1) and at the same time closes the line 14 of the compressed air supply. The pneumatic cylinder pusher 7 occupies the leftmost position. The following part is dispensed from the hopper 3, which, when the pneumatic cylinder 7 pushes forward, removes the orientable pin into the tray for unloading the parts 5. As a result of interaction with the stop b and bevel of this tray, the oriented pin under its own weight rolls into the discharge channel 15 with the required end and the next, and the stud takes its original position in the control chamber. When applying the stud to the threaded part with a smaller pitch in the ring 11, we have a reduction in the bore of the screw channel, an increase in its length, and when the stud is run-in through the ring hole, the compressed air flows from the nozzles due to the mismatch of the threaded profile holes along the axis. As a result, the main air flow is carried out along the gap between the outer diameter of the stud and the hole of the ring, and the screw channel of the stud is throttled for the passage of compressed gas. The movement of the stud in the ring 11 depends on the amount of compressed air flow along the ends of the ring, which carries the latter in the direction of a higher flow rate or, respectively, less resistance to flow outflow. The location in the device of the zone of nozzle holes 13 closer to the inlet end of the ring ensures a stable equilibrium of the stud in the compressed air flow with a tendency to push in the opposite direction of flow. In the absence of a signal from sensor 12, the compressed air supply line is shut off at the end of the return stroke of the pneumatic cylinder 7, which in turn, when a subsequent stud is fed, pushes the orientable pin into tray 5 to unload the parts. During the forward movement of the pusher, the electric control circuit of the actuating mechanism is blocked, the stop 6 remains in the initial position, ensuring that the pin is fed into the dispensing channel 15 with the required end. The orientation cycle is over. The use of the invention makes it possible to increase the productivity of the device by more than a factor of two as compared with the known device by reducing the orientation time. Claim 1. A device for automatically orienting threaded parts, preferably studs, containing means for controlling a threaded element of a part, trays for loading and unloading parts, characterized in that, in order to increase productivity, the control means is designed as a chamber equipped with a guide sleeve, . connected to the tray to load the part, and a ring with tangentially located nozzles. 2.VcTpoAcTBO according to claim 1, characterized in that the ring is replaceable. 3. The device according to PP. 1 and 2, characterized in that the nozzle holes of the ring are located along a helix, the elevation angle of which corresponds to the elevation angle of the helix of the threaded element. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 621540, cl. 23 Q 7/12, 1977. tof YU Si fig .. (rig.