RU2533980C1 - Part feed-in device - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: device to feed-in longitudinally directed rod parts of cylindrical form comprises a hopper with a vertical movable louver with its operating end being inclined to the adjoining casing, in the upper part of which there installed is a horizontal feeding conveyor equipped by an adjustable limiter. The louver is made as a cascade including an elevator from the hopper to the level of a stationary platform and an elevator to the chute coupled with the feeding conveyor above which there mounted is a handling device controlled by a video sensor signal directed to the end face of the part being fed-in, the adjustable limiter is fixed above the elevator adjoining the casing and is sloped to the hopper, and a stop is set above the stationary platform of the louver, an axial pusher is set coaxially to the chute at the output of the feeding conveyor.

EFFECT: invention provides for automatic secondary positioning of cylindrical rod parts of nonsymmetrical profile longitudinally supplied by a conveyor, in particular, of those having a blind axial hole, which are transported in the same way, as well as for the improved functional reliability of a more efficient device on the whole.

3 cl, 2 dwg

Description

The proposed invention relates to auxiliary devices for production lines, not limited to performing any one type of metal processing, and more particularly to interstitial equipment for manipulating the transfer of workpieces using grippers.

The level of this technical field characterizes the bunker-loading device of the rod-shaped cylindrical blanks in the bunker longitudinally oriented to the processing equipment, which include functionally related structural elements: a swinging slide grip mounted in the bunker, a lodgement formed by planks with an adjustable tilt angle in the transfer window of piece blanks to the discharge endless conveyor described in ed. St. SU 1340986, MKI B23Q 7/06.

Improperly oriented workpieces are ejected from the gate by the ejector back into the hopper.

The disadvantage of the described bunker loading device is low productivity due to the formation of arches from randomly oriented parts in the bunker, which must be periodically destroyed manually with a trench tool, as well as the high return of parts to the bunker that are incorrectly oriented with a special mechanism with an autonomous drive, which complicates the design.

More perfect is the bunker-loading device of the rod-type parts (see Malov A.N., Loading devices for metal-cutting machines. M: Mechanical Engineering, 1972, p. 63, Fig. 40, which contains a hopper for receiving billets in bulk, in which a crank mechanism is mounted, interacting with spring-loaded stops connected with a swinging partition, which acts as an anti-arch agitator, providing a uniform supply of workpieces to a vertically movable gate along the body, at the end of which woks are arranged in one row longitudinally oriented.

Excess workpieces with a pusher are removed to the hopper.

The gate raises the workpieces to an inclined tray, through which they slide onto the working surface of an endless conveyor, in particular a chain conveyor.

The rotation of the chain conveyor and pusher kinematically carried out from a common drive.

The disadvantage of this bunker-loading device is the design complexity and the inability to readjust to parts of different diameters, which limits the technological capabilities of non-universal inter-station equipment.

As the closest analogue to the proposed device for supplying parts according to the technical nature and the number of matching features, a bunker-loading device for bar parts according to patent RU 2208507, B23Q 7/03, 2003 was selected.

The known loading device comprises an endless conveyor located between the vertical walls of the housing on the bed, a hopper adjacent from the outside to one of the walls, the lifting gate connected to the drive of which has an end face beveled to the side of the housing wall, where the workpieces are longitudinally placed.

A feature of the known device is an extended lodgement of variable passage section mounted above the feed conveyor, made of movable bar adjustable in mutually perpendicular planes and a vertical ruler carrying said movable bar.

The inclined overload tray from the lifting gate is combined with lodgements at the exit of the conveyor.

At the exit from the hopper, incorrectly oriented workpieces are squeezed out by the adjoining wall of the casing along the reverse bevel of the gate end and are automatically returned to the hopper (moreover, part of the pushed workpieces are oriented along the gate end for feeding to the conveyor).

The disadvantages of the known bunker-boot device can be attributed to relatively low productivity due to the large return of the workpieces to the hopper, which are not additionally oriented when lifting the gate.

In addition, blanks with an asymmetric profile (with a blind axial hole or with a thinned end) are fed randomly by the conveyor, which determines the need for their secondary orientation manually in the same direction for direct loading into the processing equipment.

The technical problem to which the present invention is directed is to increase the functional reliability of the device and expand its technological capabilities.

The required technical result is achieved by the fact that in the known device for supplying longitudinally oriented rod-shaped parts of a cylindrical shape, comprising a hopper with a vertically movable gate, the working end of which is beveled towards the adjoining body carrying a horizontal feed conveyor equipped with an adjustable stop in the upper part, the gate is made in the form a cascade that includes a lift from the hopper to align with the stationary platform and a lift to the tray paired with the feed conveyor above the a manipulator is installed that is controlled by a signal from a video sensor oriented to the end of the supplied part, while an adjustable limiter is fixed above the elevator adjacent to the housing and tilted into the hopper, and an emphasis is fixed above the stationary gate platform, and an axial pusher is installed coaxially with the tray at the exit of the feeding conveyor.

Distinctive features of the proposed technical solution ensured in automatic mode the secondary orientation of the cylindrical rod parts of the asymmetric profile, longitudinally fed by the conveyor, in particular, having a blind axial hole that are guided the same way, while increasing the functional reliability of a more productive device as a whole.

The implementation of the gate in cascade with a central stationary platform and independently operating sequentially operating lifts adjoining both sides, maximized the coefficient of technical loading of the feeding conveyor with cylindrical parts oriented in the longitudinal direction due to their additional self-installation when rolling over the cascaded gate, which performs the functions of a agitator, rolling over the docked end face.

Placement of a rotary manipulator above the feed conveyor, the clamping gripper of which acts on the signal from the video sensor when the part is incorrectly oriented by the end hole, is necessary for its automatic rotation through 180 °, in the opposite direction. This provides a secondary orientation of the parts in the device, from which they exit with the same type of direction, in particular, a blind axial hole forward.

The tilting of the part by the manipulator by means of the rotary pneumatic cylinder clamped in the gripper is a reliable and easiest way to force orientation of a given direction of movement in the feed conveyor.

Scanning the end of parts with a video sensor non-contact detects the absence of a cavity in it and gives a command for the manipulator to function.

The profile limiter in the form of a ruler mounted in front of the ramp into the feed conveyor and tilted towards the hopper automatically reliably drops parts vertically located on the elevator, excluding their non-oriented passage to the feed conveyor.

An emphasis fixed on a stationary platform, which is located on the path of the parts that are incorrectly oriented and protruding beyond the elevator, provides forcible movement of the parts to the bevel of the elevator, where it is placed longitudinally, or removal of these parts and return to the hopper, which increases functionality and reliability device operation.

The installation in the tray at the exit of the feed conveyor of a coaxial pusher, preferably made in the form of a rod of a pneumatic cylinder, provides for single-piece unloading in an oriented longitudinal position of parts directed forward by a blind axial hole into the processing equipment for processing.

Therefore, each essential feature is necessary, and their combination in a stable relationship is sufficient to achieve the novelty of quality, that is, the stated technical problem is solved not by the sum of the effects, but by a new super-effect of the sum of the attributes.

The essence of the proposed invention is illustrated by the drawing, which has a purely illustrative purpose and does not limit the scope of claims of the totality of the features of the formula. The drawing schematically shows:

figure 1 - General view of the device;

figure 2 is a view along arrow a in figure 1.

The proposed device for oriented feeding of piece rod parts having a rod shape and provided with an axial blind hole contains a hopper 2 mounted on a frame 1, a housing 3 and a drive 4 connected via a crank mechanism 5 with parallel lifts 6 and 7 adjacent to the fixed ( stationary) platform 8, the upper end of which is beveled towards the horizontal feed conveyor 9 mounted in the upper part of the housing 3.

The feed conveyor 9 is made in the form of an endless roller chain.

The lower (left according to the drawing) lift 6 in the initial position is aligned with the inclined bottom of the hopper 2 for loading parts in bulk.

The end face of the elevator 7 in the initial position is aligned with the bevel of the stationary platform 8 (figure 1).

The elevator 6, the platform 8 and the elevator 7 together form a cascade in action, on which the parts are individually removed from the hopper 2, sequentially stepwise rise to the feed conveyor 9, oriented longitudinally when rolling along the end bevels.

In the extreme upper position of the elevator 7, the bevel of its end is combined with the tray 10, directed to the conveyor 9.

Above the conveyor 9, a manipulator 11 is installed (Fig. 2), which is not conditionally shown in Fig. 1, made in the form of a rotary pneumatic cylinder, controlled by a command from a video sensor 12 oriented to the end of the transported part.

On the rod of the rotary pneumatic cylinder 11, a spring-loaded gripper 13 is installed.

At the end of the conveyor 9, a tray 15 is inclined in the discharge squeegee 14 (Fig. 1).

Coaxially with the slider 14, a pusher 16 is fixed, made in the form of a rod of a pneumatic cylinder.

Above the lift 7, near the tray 10, on the body 3, a curvilinear limiter 17 is mounted with the possibility of regulation, directed towards the hopper 1, and an emphasis 18 is mounted above the platform 8, located on the trajectory of the parts in the lift 7, which are transverse for some reason that is, they are not longitudinally oriented.

The device operates as follows.

From the actuator 4, through the crank mechanism 5, the slide elevator 6 is set in motion, as a result of which the rolled cylindrical part, the rod of which is located along the elevator 6, is caught on the bevel, adjacent to the surface of the platform 8 and rolled along it with a beveled end.

In the extreme upper position of the lift 6, its bevel is combined with the inclined end of the platform 8 and the bevel of the end of the slide elevator 7, along which the part is rolled into the housing 3 until it stops.

Next, the elevator 6 is lowered to its original position in the hopper 2, and the elevator 7 under the action of the crank mechanism 5 is fed up.

In the extreme upper position of the elevator 7, the bevel of its end face is aligned with the inclined tray 10, along which the part rolls onto the bearing surface of the moving conveyor 9, which longitudinally moves the part to the pusher 16 for overload.

In this case, the image of the end face of the part taken by the video sensor 12 is compared with the control, where there is a hole.

In the case of identical coincidence of both images, the part freely passes on, and if the end of the part is solid, then the error signal from the sensor 12 is supplied to the control system of the pneumatic cylinder 11, as a result of which the spring grip 13 of the manipulator 11 is lowered onto the part and clamps it (Fig. 2).

Next, the gripper 13 is rotated by the manipulator 180 ° and reorients the part with an axial blind hole forward and returns it to the conveyor 9.

After expansion, the gripper 13 returns to its original position, and the loose part is moved by the conveyor 9 to the tray 15.

In the extreme position of the conveyor 9, the part stops at the stop and rolls along the tray 15 into the slit 14, where it interacts with the normally open end switch of the track control system of the pneumatic cylinder 16, the rod of which the part is pushed along the slide 14 into the receiving device of the technological equipment in a given spatial orientation.

According to the described sequence of actions, the proposed interstitial device for piecewise supply of longitudinally oriented cylindrical-shaped parts with a blind hole forward functions further.

A comparative analysis of the proposed technical solution with the identified analogues of the prior art, from which the invention does not explicitly follow for a mechanical engineer, and taking into account the practical possibility of serial production at the existing production of bunker loading devices, we can conclude that the patentability criteria are met.

Claims (3)

1. A device for feeding longitudinally oriented rod-shaped parts of a cylindrical shape, comprising a hopper with a vertically movable gate, the working end of which is beveled towards the adjacent housing, which carries in the upper part a horizontal feed conveyor equipped with an adjustable limiter, characterized in that the gate is made in the form of a cascade, including the elevator from the hopper to align with the stationary platform and the elevator to the tray paired with the feed conveyor, over which the manipulator is mounted, control my video sensor signal, based on the end of the feed parts, wherein the adjustable stop is mounted on the housing adjacent to the elevator and inclined into the hopper. 2. The device according to claim 1, characterized in that an emphasis is fixed above the stationary gate platform. 3. The device according to claim 1 or 2, characterized in that an axial pusher is installed coaxially with the tray at the outlet of the feed conveyor.

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