DE2347359A1 - Goods accumulation mechanism on roller conveyor - has separate roller drive chains running over rollers on common truck - Google Patents

Abstract

Where the items are accumulated, the rollers are individually engaged and disengaged. They are driven by a flexible component such as a chain divided into two endless sections. Each section runs round a guide roller on a first slide travelling along the roller track, and also round a roller, on a second slide running parallel to the first and in the opposite direction. The first section is permanently driven, while the second one is started and stopped as desired. The first slide has a control unit switching on a drive on a fresh item coming up against accumulated items. The first slide is then moved in the opposite direction to that in which the goods travel until the control unit clears. The second drive can be started up in order to removed individual accumulated items.

Description

Herbert Kappenberg, 433, Mülheim / Ruhr, Heiermannstrasse 46

»Damming and pulling off piece goods on or from roller conveyors "

The invention is directed to a device for damming and pulling off piece goods on or from roller conveyors, wherein the rollers in the accumulated area can each be switched on and off are.

Such devices have the great advantage that there is no abrasion of the goods and rolls located in the stowage area and accordingly no energy losses occur.

In the case of a known device (leaflet from Stöhr, Offenbach) a system of indexing rollers and pressure rollers is provided, whereby the release rollers are each in a specific one Distance between the idlers. A pressure roller is also arranged below each two support rollers. The switching rollers and pressure rollers are connected to one another by a linkage and adjustable springs produce a contact pressure the pressure rollers against a driving rubber belt arranged between these and the switching and support rollers, in the

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In the stowage area, a first piece of cargo is stopped by a lock, wherein the support rollers arranged under the first piece goods are driven further. The one from the first piece of cargo However, if the first pulley is pressed down, the pressure rollers, which are located a bit against the conveying direction, are lowered. whereby the driving rubber belt is lowered and the support rollers come to a standstill under the next piece of cargo. The back pressure of a row of cargo items of any length is therefore only as great as the frictional force exerted on the first piece of cargo by the support rollers located below it. WiKd released the lock for the first piece of cargo in a queue, so this piece goods are conveyed away and are released by releasing the pulley depressed by this first piece goods successively also the following piece goods conveyed away. Apart from the fact that in this known device, the support rollers continue to run under the first accumulated piece goods, the system of the various support, indexing and pressure rollers as well as the necessary connecting rods is relatively complicated and prone to failure or maintenance-intensive.

The object of the invention is to create a solution by means of which a grinding of the rollers on all piece goods in the stowed area is avoided and the overall training is simple and maintenance-insensitive and requires little drive energy.

In a device of the type described above, this Object according to the invention by one of the rollers of the roller conveyor

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Flexible drive element assigned in drive connection solved, preferably a drive chain which is divided into two endlessly revolving individual drives, each of which Single drive around a steering roller on one in the outer roller conveyor movable first carriage and around a pulley on a counter-rotating and parallel movable second carriage, wherein a single drive is constantly driven and the other single drive can be switched on optionally and on the first Carriage control means are arranged, which bäm run-up Newly transported piece goods against already accumulated piece goods' switch on a drive by means of which the first carriage is moved against the conveying direction until the control means report free.

Because of this training it is guaranteed that all Piece goods in the stowed area rest on non-driven rollers, causing friction losses and damage to the Piece goods are avoided, perner is recognizable that the training is very simple and less prone to failure, since only two simple guideways for two parallel opposite directions mutually moving slides are required and in particular complicated lever linkages for a large number of rollers are omitted, rather, all roles that come into contact with the piece goods can be designed and stored in the same way.

As can be seen, it takes one or more to pull it off Piece goods from the stowage area only the other target drive to be designed to be drivable.

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This results in a very simple design if the drive of the other individual drive is constantly via a clutch running single drive takes place.

For example, this can be done in a particularly simple and advantageous manner via an electromagnetic device arranged on the second slide Coupling possible.

Finally, Eich recommends such a design of the control means, that the first carriage when pulling off piece goods runs along with the last packaged goods. For this, the same control means can be used as with the opposite Movement of the first carriage can be used when further incoming piece goods are stowed, or separate control means are used, For example, those that simply indicate when a free space on the first slide has been removed arises.

The invention is explained in more detail below with reference to the drawing, for example. This shows in a schematic representation in

fig. 1 shows a side view of a device according to the invention and in FIG

pig. 2 a section along the line AA of the pig. 1.

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The device shown in the drawing includes a number of completely identically designed and mounted roller-shaped rollers 1 to form a horizontal one Arranged roller conveyor, each of the rollers 1 is at one end with a gear not shown, which is in engagement with a corresponding drive chain, which is endless in two revolving individual drives 2 and 3 is divided.

Each of these individual drives runs around a pulley 4 or 5 on a longitudinal guide rails in the path formed by the rollers 1 6 movable first carriage 7, a deflection sprocket 17 or 18, and a further deflection roller 8 or 9 on one along guide rails 1 ο parallel to the first carriage 7 movable second carriage 11 and arranged in parallel in opposite directions Tension pulleys 12.

On the second carriage ii are on the axes of the pulleys 8 or 9 further chain wheels 15 and 14 of the same diameter are arranged around which a chain drive 15 is placed. The sprocket 14 is rotatably connected to its shaft, while the sprocket 13 optionally by means of an associated electromagnetic Coupling 16 can be coupled to its shaft.

The sprocket 17 engaged with the drive 2 is drivable by means of an electric motor 19.

The second slide 11 is furthermore connected to it on both sides and around two deflection rollers 21 and 22

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circumferential Qjriebes 2o back and forth along the guide rails 1o movable forward, for which purpose the deflection wheel 21 can be driven in both directions of rotation by means of a further electric motor 23.

Control means (not shown) are also located on the first slide 7 provided, for example two selenium cells spaced apart in the conveying direction, which send a signal, when both cells are covered by a piece of cargo and report free again when the selenium cell on the right according to FIG. 1 is free again is, as would be the case in the position of the piece goods according to FIG. "

The mode of operation of the device is as follows: In the position shown in FIGS. 1 and 2, the electromagnetic clutch 16 is switched off, so that only the individual drive 2 is driven via the electric motor 19 and drives the rollers 1 connected to it that on these roles resting piece goods s are promoted in the direction of the arrow j . The rollers 1 connected to the other individual drive 3 stand still, so that the piece goods s accumulated in this area are not subject to abrasion.

If a new piece of cargo S is running against the already feared goods Piece goods row, the control means on the first slide 7 sends a signal via control lines and not shown Control means of the usual type, e.g. B. busbars or cable drums

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given to drive the electric motor 23 in such a direction, that the second control slide 11 as shown in the drawing to the left and thus the first control slide 7 as shown in the drawing is moved to the right, as a result of which further rollers 1 located under the newly accumulated piece goods are switched off. As soon as the control means report free again on the first slide 7, the drive 23 is put out of operation again and only switched on again when the next piece of goods comes into play, in such a way that that the first carriage 7 moves gradually to the right according to the increasing congestion. .

Should now one or more piece goods s at the left end of the Roller conveyor are withdrawn, the electromagnetic clutch 16 is actuated from a control panel and thereby the Single drive 3 switched on, whereby piece goods are conveyed off to the left according to the duration of the switch-on time.

Control means can be provided on slide 7 in such a way that that in each case when old conveying of the last accumulated piece goods s from slide 7 and the pre-reports of those concerned control means of the electric motor 23 is driven in the opposite direction, such that the carriage 7 with the last accumulated parcel S runs along or moves gradually to the left, so that the device is immediately full again, is ready for operation when the individual drive 3 after pulling off piece goods by switching off the electromagnetic clutch 16 is stopped again.

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- · i ■ 23Λ7359

It can be seen that due to the "described device all piece goods in the s ^ aubbereich free of frictional forces are and so no unnecessary energy is consumed and that the entire device is very simple and therefore little works prone to failure.

Of course, the device described can be modified in many ways without departing from the basic idea of the invention, so the control means on the first carriage in any other way, for. B. as mechanical tactile organs be, and the formation of the control paths is possible in any conventional manner. Anyway, in the latter the invention has not been seen, so that a more detailed description in this regard has been dispensed with, purely because of the second Individual drive could also be provided a separate drive or the electromagnetic clutch could be on the first Be arranged carriage. Instead of a drive shaft, a toothed belt drive, a friction belt or the like could be provided and like. more.

Expectations:

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Claims (5)

Claims » . Device for accumulating and removing piece goods on or from roller conveyors, with the rollers in the accumulated loading rich can each be switched on and off, characterized by a drive connection associated with the rollers (1) and the roller conveyor flexible drive element, preferably a drive chain, which is divided into two * endlessly revolving individual drives £ 2,3), each of which is individually driven around a pulley (4,5) on a first carriage (7) movable in the roller conveyor and around a deflection roller (8,9) on one in opposite directions and parallel movable second carriage (11) runs, with a single drive (2) is constantly driven and the other individual drive (3) can optionally be switched on and control means (24) are arranged on the first slide (7), which when a newly conveyed piece goods (S) come up against already accumulated piece goods switch on a drive (23) through which the first carriage (7) counter to the conveying direction is moved until the control means (24) report free. 2. Apparatus close to claim 1, characterized in that For pulling one or more piece goods (S) from the stowage area the other:. · single shoot (5). is propulsive. 3. Device according to claim 1 or 2, characterized in that the drive of the other individual drive (3) via a Coupling (16) from the continuously running single drive (2) he follows* 509815/0523 4. Device according to claim 5, characterized in that the drive of the other individual drive (3) via one on the second Solids (11) arranged electromagnetic clutch (16) he follows. 5. Device according to claim 2, characterized by such a device Formation of the control means (24) that the first carriage (7) when pulling off piece goods (S) with the last accumulated parcel runs along. 509815/0523