DE29516304U1 - Pallet loading and transport device with several work stations - Google Patents

Description

Pallet loading and transport pre-flight, work stations

The invention relates to a pallet loading and transport device with several work stations for the unattended stacking of panels, sheets and pallet stacks and for stacking pallets with manufactured parts on them.

Pallet loading and transport devices with several work stations are known in which sheets and panels are lifted using suction lifters. The loaded pallets are brought to the work stations on roller conveyors (DE - OS 4243125 B65G 61/00). Pallet loading devices are also known in which the panels or sheets are destacked from a stack in one station and placed on a pallet in a second station. To do this, the suction lifter is moved on rails from one station to the second (DE - OS 2935734 B65G 61/00), swiveled by 90° (DE - PS 2740519 B65G 61/00) or by 180° (DE - OS 3014735). The loading devices also serve machine tables, in particular machine changing tables. The first station is the panel stack and the second is the machine table. Disposal is done manually between loading processes. Further automation does not seem possible.

The aim and task of the invention is to find a pallet loading and transport device with several work stations, with which both stacks of panels or sheets on pallets can be destacked in a space-saving manner and pallets loaded with finished parts can be stacked and transported by means of wide-angle swivel movements.

This task is solved with a pallet loading and transport device with several work stations, which has a rotating load arm that can be moved vertically on a stand, with a suction lifter mounted on the free end. According to the invention, a guide rod that can be rotated on the stand, moved vertically with the load arm and is attached to the suction lifter is located parallel to the load arm. In addition to suction cups, the suction lifter has movable claws that can be swiveled into recesses on the pallets.

Further advantageous embodiments of the invention are the subject of the further subclaims.

The invention will be explained in more detail below using an embodiment. The accompanying drawing shows in

Fig. 1 a workstation with a pallet loading and transport device

Fig. 2 the pallet loading and transport device in top view.

In front of a pallet loading/transport device 1 there is a stack of sheets 2 in a work station. A swiveling and vertically movable suction lifter 3 is placed on the stack of sheets 2. Next to the pallet loading/transport device 1 there is a cutting machine 4, on whose pallet changing table 5 pallets 6 are placed in the next work station. The pallets 6 are stacked on the other side next to the pallet loading/transport device 1 on a trolley 7, which is located in the third work station. Another trolley 8 is coupled to the trolley 7 and is used to hold pallets 6 with finished parts 9 and offcuts 10 on them. The trolleys 7 and 8 can be moved on roller tracks 11 in the direction of the arrow into the loading position of the third work station in accordance with the work cycle.

The pallet loading/transport device 1 consists of a stand 12, which supports a load arm 16, which is attached to a carriage 13 via a joint 14 and can be moved vertically in the stand 12 using a hydraulic cylinder 15. Parallel to the load arm 16 is a guide rod 18, which is attached to the carriage 13 via a joint 17 and to the suction lifter 3 via a joint 19 at the same distance from the load arm 16. The suction lifter 3 is supported by the load arm 16 via a joint 20. Supports 21 are attached to the suction lifter 3, which have pivotable, vertically movable claws 22 at their ends for laterally engaging the pallets 6. The load arm 16 is moved to the various work stations by a pivot cylinder 23 attached to the carriage 13.

The suction lifter 3 is used to lift the top sheet from the sheet stack 2. A corner lifter (not shown) and a thickness gauge (not shown) ensure that only one sheet is lifted. The suction lifter 3 carrying the sheet is swiveled over the pallet changing table 5. The suction lifter 3 is swiveled in a parallel alignment by the parallelogram guide consisting of the load arm 16 and the guide rod 18. After the sheet has been placed on the pallet changing table 5, it is pushed into the cutting machine 4 with the pallet 6. The pallet 6 is also the working surface of the cutting machine 4. At the same time, the pallet 6 with the processed, previously inserted sheet is pushed out of the pallet changing table 5. To do this, the claws 20 on the suction lifter 3 are lowered next to this pallet 6 and swung into it from the side. This pallet 6 is lifted and swiveled by approx. 120° over the trolley 8, which is located in the loading station, lowered and stacked. The trolley 8 is rolled out of the loading station into the sorting position and the trolley 7 with the stack of empty pallets 6 is rolled into the loading station. An empty pallet β is now grabbed and swiveled to the pallet changing table 5 and released there. The suction lifter 3 is now swiveled over the sheet metal stack 2 and the next loading cycle begins.

List of reference symbols used

1 pallet loading/pallet transport device

2 sheet stacks

3 suction cups

4 Cutting machine

5 pallet changing table

6 pallets

7 trolleys

8 trolleys

9 Prefabricated part

10 Waste

11 Runway

12 stands

13 sledges

14 Joint

15 hydraulic cylinders

16 Load arm

17 Joint

18 Guide rod

19 Joint

20 joint

21 carriers

22 Claw

23 swivel cylinder

Claims (4)

Protection claims 1) Pallet loading and transport device (1) with several work stations, with which both stacks of plates or sheets (2) can be stacked onto empty pallets (6) using a suction lifter (3) carried by a pivoting load arm (16) and pallets (6) loaded with finished parts (9, 10) can be stacked, whereby the load arm (16) is attached to a stand (12) via a vertically movable carriage (13) so that it can rotate around a joint (14) and the suction lifter (3) is rotatably mounted at the free end of the load arm (16), characterized in that the plates or sheets of the stack of plates or sheets (2) as well as the pallets (6) can be transported from work station to work station over a wide angle in parallel during the pivoting movements and that for this purpose a guide rod is attached to the carriage (13) and to the suction lifter (3) so that it can rotate parallel to the load arm (16). (18) is attached . 2) Pallet loading and transport device (1) according to claim 1, characterized in that the suction lifter (3) carries, in addition to the suction cups, movable, extendable claws (22) which can be pivoted into recesses on the pallets (6). 3) Pallet loading and transport device (1) according to claims 1 and 2, characterized in that a work station is a pallet changing table (5) of a cutting machine (4), in the frame of which the pallet (6) can be inserted and lifted out as a work surface. 4) Pallet loading and transport device (1) according to claim 1, characterized in that one of the work stations is a rolling carriage (7, 8) running on roller tracks (11), which can be interchangeably moved into the work station and on which pallets (6) can be stacked and unstacked.