RU2261787C2 - Method and device for orienting workpieces - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: method comprises moving workpiece over the chute and affecting it by the jet of compressed air. The workpieces move along the inclined chute and affected by the jet directed at an angle to the side of the chute for permitting improperly oriented workpieces to be removed through the recess in the bottom of the chute and properly oriented workpieces to move forward along the chute. The device comprises nozzles for supplying air, chute for moving workpieces, and additional nozzle. The chute is inclined for permitting the workpieces to move along the chute under the action of gravity and is provided with the recess in the bottom section equal to 1.5-3 of the diameter of the workpiece. The nozzles are mounted on the sides of the chute. One of the nozzles is set at an angle of 10°-30° to the side of the chute for permitting improperly oriented workpieces to be removed through the recess by means of the air jet. The second nozzle is mounted from the opposite side at an angle 10°-30° to the side of the chute in the direction of motion for permitting the properly oriented workpieces to move forward.

EFFECT: expanded functional capabilities.

2 cl, 5 dwg

Description

The invention relates to the automation of loading processes of machine tools and presses with piece blanks such as caps, covers and plugs.

A device for orienting parts is known, comprising a transport tray with side guides and a compressed air nozzle to provide orientation of flat parts with a curved edge, provided with a dividing strip installed in the direction of movement of the parts directly behind the nozzle mounted in the bottom of the transport tray (see a p. No. 562413, class B 23 Q 7/08).

It is also known a device for orienting parts, containing the supply and exhaust trays with elements of the orientation of the parts, while the supply and exhaust trays have a common wall, and the elements of the orientation of the parts are made in the form of two strips having bevels installed on the bottom of the feed tray parallel to its longitudinal axis and protruding beyond the walls of this tray, as well as in the form of a figured hole made in the bottom of the tray between the strips, and the impeller mounted on the feed tray, while in the wall separating the feed and discharge trays, Neno window used to reset incorrectly oriented parts in the discharge tray and the bottom tray is installed ledge designed to flip pieces in the correct position (see FIG. AS №1454644, cl. B 23 Q 7/02).

A disadvantage of the known devices is their unsuitability for orientation of parts with a blind hole such as caps, covers and plugs.

The closest in technical essence to the method and device for orienting parts with a through hole expanding at one of the ends that are moved along the tray by exposing them to a compressed air stream, where in order to ensure the orientation of the parts, a stream of compressed air is directed into the part opening, blocking it from the opposite side screen (see AS No. 1148756, CL 23 Q 7/08).

A disadvantage of the known method and device is its unsuitability for orientation of parts with a blind hole such as caps, caps and plugs.

In addition, the disadvantage of this method and device is its low productivity and the need for a compressed air stream to affect parts to prevent them from stopping in the orientation zone and after orientation, correctly oriented towards the machine, and incorrectly oriented back to the hopper, since the device located in the horizontal plane and the movement of the workpieces is prevented by sliding friction, which increases with increasing mass of the workpieces. The advancement of the workpieces along the channels is also hampered by the presence of an oil film and mechanical contamination of the surface of the parts.

The objective of the invention is to provide orientation of parts with a through hole, increasing the productivity of the method and device and simplifying them.

The problem is achieved in that in the proposed method of orienting axisymmetric parts such as caps, caps and plugs with a blind hole at one of the ends, including applying a compressed air stream to the parts when moving them along the tray, according to the invention, the parts are moved along an inclined tray and act on a jet directed at an angle to the wall of the tray with the possibility of dropping into the cutout on the bottom of the tray of incorrectly oriented parts - with an end face with a blind hole to this stream, and a jet with the false side of the tray and directed at an angle in the direction of movement of the parts - with the possibility of continuing movement along the channel of correctly oriented parts - with an end face with a blind hole to this stream.

A device for orienting axisymmetric parts such as caps of caps and plugs with a blind hole on one of the ends, containing a nozzle for supplying air and a tray for moving parts, according to the invention is equipped with an additional nozzle, the tray is inclined to move parts on it under the action of gravity and is made with a cutout in the lower part equal to 1.5 ... 3 part diameters, nozzles are mounted on the walls of the tray, one of them being installed at an angle of 10 ... 30 ° to the wall of the tray with the possibility of discharge air jet into the cutout of parts that are incorrectly oriented — with a blind end towards the given nozzle, and the second nozzle is installed on the opposite side at an angle of 10 ... 30 ° to the tray wall in the direction of movement with the possibility of ensuring continued movement of correctly oriented parts.

Thanks to this method, the part moves straight all the time, and, reaching the separation zone, its speed increases under the action of a pulse of compressed air directed at an angle into the blind hole at the end of the part in the direction of its movement. There is also no sliding friction force and the influence of various contaminants on the process of separation and transportation of the workpieces is reduced.

The invention is illustrated by drawings. Figure 1 shows the described device, a section view of the left; in FIG. 2, section AA in FIG. 1; figure 3 is a top view, figure 4 is a front view and figure 5, the left side view of the structure of the automatic bunker gripper-orienting device (ABZOU).

The method of orientation of the parts is as follows.

Parts 4 enter channel 1 into the separation zone, where they are installed at an angle of nozzle 2 and 3. If the part enters with an end hole with a blind hole to nozzle 2 mounted at an angle on the tray wall, then a stream of compressed air from the nozzle drops the part down into the notch if as the part enters the nozzle 3 with an end hole with a blind hole, then by the action of a stream of compressed air directed at an angle in the direction of movement, it slips through the cutout at the bottom of the tray and continues its movement along the channel.

The use of this method of orientation of the workpieces also simplifies the design of the automatic hopper gripping and orienting device shown in figure 4 is a front view and figure 5 is a left view.

Parts such as shallow caps are loaded into the drum 5, where special angles are installed, which, when the disk rotates, cast the parts into the area limited by the plates 6 mounted directly on the tray 7, while some of the parts, previously oriented vertically by the edge along the plane of the plates, fall into the tray, the rest roll back into the drive.

In a tray mounted obliquely due to the initial impulse transmitted by it from the rotation of the drum, and under the action of gravity, the parts roll down, they are oriented differently, i.e. end with a blind hole to one or another wall. Passing a short distance, the parts reach the orientation point, where two pneumatic nozzles are installed on the walls of the tray, which make correctly oriented workpieces move further along the channel, giving them additional acceleration, while incorrectly oriented workpieces are cut down into the cutout of the lower part of the tray, and the parts fall back into drum.

The drum used in this ABZOU and preparation of parts for gripping provide the highest grip coefficient, mass and due to this high productivity, as well as the ability to use ABZOU as a universal, easily adaptable to other parts. The compactness of the device is achieved, since there is no need for a tray to return the workpieces to the drum.

The use of the invention provides an increase in the productivity of the method and device, their significant simplification and increased reliability of the orientation of the parts.

This device is used at the enterprise when orienting parts widespread in the automotive industry, such as steel or aluminum plugs with a cylindrical or conical lateral surface, for feeding a thread rolling machine with high productivity to the knot.

Claims (2)

1. A method of orienting axisymmetric parts such as caps of caps and plugs with a blind hole at one of the ends, including exposing the parts to a jet of compressed air when moving them along the tray, characterized in that the parts are moved along the inclined tray and are exposed to them directed at an angle to the wall of the tray with a jet with the possibility of dropping improperly oriented parts into the cutout at the bottom of the tray - with an end face with a blind hole to this jet, and with a jet from the opposite side of the tray and angled the movement of parts - with the possibility of continuing movement along the channel of correctly oriented parts - with an end face with a blind hole to this jet. 2. A device for orienting axisymmetric parts such as caps of caps and plugs with a blind hole on one of the ends, containing a nozzle for supplying air and a tray for moving parts, characterized in that it is equipped with an additional nozzle, the tray is located obliquely with the possibility of moving parts under it under by gravity and made with a cutout in the lower part equal to 1.5-3 of the diameter of the part, the nozzles are mounted on the walls of the tray, while one of them is installed at an angle of 10-30 ° to the wall of the tray with the possibility of ensuring throwing a jet of air into the cutout of parts that are incorrectly oriented - with a blind end towards the given nozzle, and the second nozzle is installed on the opposite side at an angle of 10-30 ° to the tray wall in the direction of movement with the possibility of ensuring continued movement of correctly oriented parts.

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