DE1249166B - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl:

B65g

German class: 81 e- 129

Number: 1249166

File number: G 39316 XI / 81 e

Filing date: December 4, 1963

Opened on August 31, 1967

, The invention relates to an unloading device, in which a stack of boxes od. Like. Location is transmitted for location with the stack-lifting elevator, provided above the upper end of devices comprising a under attacked by a horizontal 5 retractable pad location on pick up a discharge conveyor.

A loading device is already known in which a stack of boxes or the like, layer by layer is produced, wherein at the upper end of a stack elevator opposite one another, towards one another and pneumatically movable slide plates away from each other are provided which temporarily have a position of Reaching under boxes or the like, as well as a pusher device that can be moved transversely to the sliding plates and a conveyor. There is also a loading device known that transversely to an inlet conveyor between this and the upper end of a stacking elevator has movable push arms which are attached to above the Stack elevator arranged rails are guided and operated by a controllable motor. With these known devices, however, is only the loading of stacking plates with layers of boxes or the like. Known, wherein the pushing devices, or the pushing arms are arranged so that a reversal the 'loading process into an unloading process is not easily possible.

In a known device, a device is provided at the upper end of the elevator which can remove a single layer of the stack and place it on a discharge conveyor. It's a here a special carriage is provided, which is moved from one side under the top layer of the stack and picks up the objects, and then this carriage is retracted and can take the picked up Submit the location to a sponsor. When in this known device the carriage and the top layer are not exactly aligned, the slide can move to the top layer in Force exerted in one direction cause the individual components of the top layer to be displaced and may jam or tip over.

The invention has for its object to provide an unloading device in which even in most robust continuous operation, jamming or tilting of the objects of the top layer safe is prevented.

According to the invention, two opposing sliding plates, which can be moved towards and away from one another, are provided as a base and carry sliding prongs at their ends facing one another. Unloading device in which a stack of
Boxes or the like. Layer by layer is removed

Applicant:

George Edward of Gal Jr.,
Montgomery, Ala. (V. St. A.)

Representative:

Dipl.-Ing. Ε. Prince, Dr. G. Houses
and Dipl.-Ing. G. Leiser, patent attorneys,
Munich 60, Ernsbergerstr. 19th

Named as inventor:
George Edward of Gal Jr.,
Montgomery, Ala. (V. St. A.)

and reciprocating ejector arms are provided across the slide plates and the discharge conveyor. The sliding plates, which simultaneously reach under the top layer from two sides, exercise this uppermost layer does not exert any significant force in only one direction, so that this reaching under jamming or tilting of the top layer cannot occur.

It can be advantageous that the sliding plates can be actuated pneumatically in a manner known per se. Furthermore, it can be advantageous that the ejector arms in a known manner at above the Stack elevator arranged rails are guided and operated by a controllable motor.

The invention is to be explained in more detail with reference to the figures of the drawing using an exemplary embodiment. It shows

F i g. 1 is a perspective view of an unloading device,

F i g. Figure 2 is a plan view of the upper portion of the unloading device in which a stack is layered is transferred for position,

F i g. 3 is a plan view of the transmission section of the unloading device and FIG

F i g. 4 is a side view of the FIG. 3 section shown.

In Fig. 1 shows an elevator which consists essentially of the components 10, 11, 13 and 15 . A conveyor 19 is connected to this elevator, and this conveyor has conveyor belts 28 , for example. About this conveyor 19 can the

709 639/353

Claims (3)

Elevator 10, 11, 13, 15 loading platforms are fed, which od a stack of boxes. Like. Carry. The elevator has a platform 70 movable up and down, and loading beds with a stack are placed on this platform 70. In the illustrated embodiment, the platform 70 is picked up by means of a second conveyor 56 arranged within the elevator shaft be brought down to od from the conveyor 19 another loading platform with a stack of boxes. The like. To take over. The actual unloading device is provided at the upper end of the elevator shaft. At the upper end there is an ejector 163 and this ejector 163 moves the upper layer in the illustration in FIG. 1 to the rear, and. on the other side of the elevator shaft is the one shown in FIG. 2 shown conveyor 180 and this conveyor 180 is with the in F i g. 1 shown rails 199 in connection. At the upper end, the individual layers are moved by the ejector arms 163 to the conveyor 180 and from there to the discharge rail 199. The control of the elevator platform 70 is designed in such a way that, after the ejector arms 163 have finished their work, the platform is raised by one layer height at a time until the last layer is unloaded. In order to be able to carry out this discharge in a safe manner, opposing slide plates 100 and 100 'are provided. These sliding plates 100 and 100 'are movable towards and away from one another in a horizontal plane in the upper part of the vehicle shaft. Each of the plates 100 and 100 ′ has guide sleeves 101 and 102. These guide sleeves are mounted on guide rods 103 and 104, these rods being attached to the elevator shaft. Pneumatic working cylinders 111 and 112 are provided for actuating the sliding plates 100 and 100 '. These cylinders have piston rods 113 and 114 which are fastened to the underside of the plates 100 and 100 'by means of brackets 115 and 116. At the front ends of the plates 100 and 100 'sliding tines 118 and 119 are arranged, which are designed such that the position of boxes od; Like. Can slide smoothly along these sliding tines onto the sliding plates. In Fig. 2, the sliding plates 100 and 100 'are shown with solid lines in the open position. When a stack is raised so far by means of the elevator platform 70 that the uppermost layer is at the level of the conveyor 180, the sliding plates 100 and 100 'being at such a height that they are below this uppermost layer, the sliding plates 100 and 100 'by means of the pneumatic working cylinders 111 and 112 into the position shown in FIG. 2 are brought to the position shown in dashed lines. In this position they reach under the top layer of the stack. The top layer of the stack is now carried by these sliding plates 100 and 100 'and can be placed on the conveyor 180 along these sliding plates. This uppermost layer can consist, for example, of several rows of boxes, it being possible for the delivery to the conveyor 180 to take place in such a way that a row of boxes is delivered at a time. To deliver the top layer onto the conveyor 180, push arms 163 are provided which, as shown in FIG. 1 shows, guided by a frame 162. This frame 162 can be moved along rods 161 and 161 '. These rods are, as shown in FIGS. 1 and 4, stored in the upper end of the elevator shaft. A drive 149, 140 is provided for actuating the ejector arms 163. The drive can be designed to operate incrementally to deliver a number of items onto the conveyor 180 at a time. The drive devices of the devices shown are designed so that synchronous operation is possible. Patent claims: 1. Unloading device in which a stack of boxes or the like is removed layer by layer, with an elevator lifting the stack, over the upper end of which devices are provided which a layer under which a horizontally retractable base is gripped on a discharge conveyor give up, characterized in that two opposing, sliding plates (100, 100 ') which can be moved towards and away from one another are arranged, which at their ends facing one another, slide tines (118, 119) carry, and that ejector arms (163) which are movable transversely to the slide plates and to the discharge conveyor (180) are provided. 2. Unloading device according to claim 1, characterized in that the sliding plates (100, 100 ') can be actuated pneumatically in a manner known per se. 3. Unloading device according to one of claims 1 and 2, characterized in that the ejector arms are guided in a manner known per se on rails (161, 161 ') arranged above the stack elevator and are actuated by a controllable motor. Considered publications: U.S. Patents Nos. 2,774,489, 2,944,702, 2,947,405, 2,994,444, 3,056,513, 3,070,241. 1 sheet of drawings