DD234258A5 - DEVICE FOR STACKING THOROUGH MOLDED PARTS - Google Patents

Abstract

In a device for stacking thin-walled moldings (15), for example, stamped sheet metal parts for the automotive industry, the flat-lying molded parts (15) are held in a stacking station (17) between lateral profile grippers (19). A swivel carrier (8) is pivotable, height-adjustable and can be moved in a base frame (1). The swivel carriage (8) has profile grippers (10, 11), which take over the mold parts (15) in the stacking station (17). The swivel carriage (8) moves into a Stapelbehaelter (20). There, the molded parts (15) between the lower receiving strips (23) and resiliently liftable Profilgreifstuecken (27) are added to upper receiving strips (25) in a stacked order. Fig. 1

Description

Stacking group is needed. If the stack group of four moldings is formed, is available for the movement of the pivot carrier four times the cycle time of the press. In this way, the stacking process is feasible without difficulty even with very fast working, modern stamping presses.

An even further increase in capacity is possible because this stacking station is preceded by another stacking station and that a transport carriage each transported a group of superposed moldings from the first stacking station in the second stacking station.

Further advantageous embodiments of the inventive concept are the subject of further subclaims.

embodiments

The invention will be explained in more detail using an exemplary embodiment, which is shown in the drawing. It shows:

1 shows a device for stacking thin-walled molded parts in a stacking container in a side view, FIG. 2 shows a partial view similar to FIG. 1, with a movable belt in its position engaging in the stacking container,

3 shows a partial top view in the direction of the arrow III in FIG. 1, FIG. 4 shows a spatial representation of the stacking container used, and FIG. 5 shows an enlarged partial section along the line V-V in FIG.

In a portal-like base frame 1 (FIGS. 1 and 2), a gripping carriage 3 can be moved along an upper gantry carrier 2 by means of a drive device indicated only schematically as a drive chain 4. A gripping carriage 3 can be moved in the vertical direction, for example by means of a gripper carriage 3 At the lower end of the gripper carriage 5, a pivot support 8 is pivotally mounted in a horizontal, transverse to the direction of movement of the gripper carriage 3. The pivot drive is, for example, a stepper motor 9. At the pivot support 8 are two pairs of In the illustrated embodiment, the upper profile grippers 10 are movable relative to the lower profile grippers 11 by means of a pressure medium cylinder 12. The lower profile grippers 11 are movable perpendicularly to the pivot carrier 8 by means of a pressure medium cylinder 13. At one end i protrudes n the base frame 1, the end of a longitudinal conveyor 14 into it, which consists for example of two parallel conveyor chains and au to be conveyed mold parts 15, in the illustrated embodiment of sheet metal existing stampings for automotive doors, lying in a short cycle promoted. A stop 16 stops the mold parts 15 in a stacking station 17 at the end of the longitudinal conveyor 14. There, the mold parts 15 are lifted by a lifting device 18 individually and detected by lateral profile grippers 19. Several groups of profile grippers 19 are arranged in different height positions, so that several moldings 15 at a predetermined distance one above the other in the stacking station 17 between the profile grippers The stack group of molded parts 15 formed in this way is picked up by the pivot support 8 between its profile grippers 10 and arranged and clamped in the direction of a stacking container 21 within the base frame 1.

During the longitudinal movement of the gripper carriage 3, the pivot carrier 8 is pivoted from its horizontal position shown in FIG. 1 into a position in which the received mold parts 15 are inclined somewhat obliquely with respect to the vertical. In this position, the gripper carriage 3 moves the received in the pivot carrier 8 moldings up to the predetermined location in the stack container 20th

The stack container 20 has a frame 22 with corner posts 23 (Fig.4). On the frame 22 of the stacking container 20, two lower longitudinal receiving strips 23 are provided, which have at their top a toothing or notch 24, which serves to hold the lower edge of the mold parts 15.

In the frame 22, two upper longitudinal receiving strips 25 are arranged at a distance from each other so that between two receiving strips 25 at least one, in the illustrated embodiment, however, open at both ends container 26 is formed, in which the gripping carriage 5 and the lower part of the gripper carriage 6 unhindered can retract.

In the upper receiving strips 25 each have a series of movable in the vertical direction Profilgreifstücken 27 is arranged (Fig. 5), which are supported against a spring 28. The profile gripping pieces 27 have on their underside a profile notch 29, which serves to receive the upper edge of each of a molded part 15.

In the manner described above, the combined into a stack group moldings 15 are brought from the pivot support 8 in the stack container 20 that the individual mold parts 15 touch each with its upper edge a profile gripping piece 27 in the two receiving strips 25. In this position, the initially still inclined moldings 15 are brought into the vertical position, for example in which the Schwenkträger8 pivots completely in the vertical position, or by the first obliquely held on the pivot carrier 8 moldings 15 by a displacement of the lower profile gripper 11 by the pressure medium cylinder thirteenth be pivoted in the vertical position. The profile gripping pieces 27 are lifted against the force of the spring 28 until the mold parts 15 are discontinued by the pivot support 8 in its final position on the lower receiving strips 23. The individual mold parts 15, which are then in their predetermined, ordered stacking position in the stacking container 20, are held between the upper and lower uprights 23 and 25. The stacking container 20 filled in this way can be moved out of the loading position by a transverse displacement of the sliding strips 21 and replaced by a new, empty stacking container 20.

The filled stack containers 20 can be transported and stored without changing the stack arrangement of the moldings. In order to prevent unintentional lifting of the profile gripping pieces 27, an additional (not shown) securing strip can be provided which prevents lifting of the mold parts 15 and / or the profile gripping pieces 27. Notwithstanding the illustrated embodiment, the stacking station 17 may be preceded by a further stacking station, wherein a transport carriage each transported a group of superposed moldings 15 from the first stacking station in the second stacking station 17, said pre-stacked mold parts 15 are received between the side profile grippers 19 , In this case, the lifting device 18 is located in the upstream further stacking station. .... ~ - -

The upper and / or lower receiving strips 25 and 23 of the stacking container 20 are adjustable and replaceable arranged in the stacking container 20, so that it can be easily converted to moldings of other dimensions.

The stack container 20 is universally applicable as well as the entire device described. The loading and unloading can be used without structural changes only by changing the control commands for the moving parts, for example, to receive the lying flat transported moldings 15 in the stack groups described or individually and to lay flat in a container, for example, only on his Upper has an opening.

With the described device, the moldings can be removed from the illustrated stack container 20 or another container also individually or in groups, to be supplied to a further processing station.

Since the moldings are each held in an ordered arrangement in the predetermined mutual distance, there is no risk that the mold parts 15 wedged into each other.

The pivoting carrier 8 can simultaneously pick up a group of two to six or even more shaped parts 15 and transport them into the stacking container 20. For the drive of the gripper carriage 3, instead of the drive chain 4, for example, a rack and pinion drive can be used.

Claims (6)

claims: 1. Apparatus for stacking thin-walled molded parts, in particular large punched parts made of sheet metal for the automotive industry, consisting of a loading and unloading device and a plurality of stacking containers in which movable profile gripping pieces are arranged for the orderly recording of the moldings, characterized in that in a base frame (1) a gripping carriage (3) is longitudinally movable, which carries a downwardly projecting, vertically movable gripping carriage (5) on which a pivot support (8) about a horizontal pivot axis (7) is pivotally mounted, and in that the pivot support (8) at least two opposite, Having relatively movable profile gripper (10,11). 2. Apparatus according to claim 1, characterized in that at the end of a longitudinal conveyor (14) a stacking station (17) is arranged, which comprises a lifting device (18) for the molded parts (15) and separately operable lateral profile gripper (19) for several at a distance Having stacked moldings (15). 3. Apparatus according to claim 2, characterized in that the stacking station (17) is preceded by a further stacking station and that a transport carriage each transported a group of superposed moldings (15) from the first stacking station in the second stacking station (17). 4. Apparatus according to claim 1, characterized in that in the stack container (20) at least two upper and two lower longitudinal receiving strips (25, 23) are arranged and that between the two upper, the movable profile gripping pieces (27) carrying receiving strips (25) at least at one end of the container open lane (26) for retracting the gripping carriage (5) is provided. 5. Apparatus according to claim 4, characterized in that the individual profile gripping pieces (27) can be raised against spring force. 6. Apparatus according to claim 1, characterized in that the lower or upper profile gripper (10,11) perpendicular to the pivot support (8) are displaceable. For this 3 pages drawings Field of application of the invention The invention relates to a device for stacking thin-walled moldings, in particular large stampings made of sheet metal for the automotive industry, consisting of a loading and unloading device and a plurality of stacking containers in which movable profile gripping pieces for the orderly recording of the moldings are mounted. Characteristic of the known technical solutions The loading and unloading of this stack container is done mainly by hand. This process is associated with great work and brings injury to workers. A particular difficulty is that the working speed of modern stamping presses is so high that the stamped moldings are delivered in a faster cycle than they can be introduced into the stack container. In order to facilitate and speed up the loading and unloading of stacking containers, stacking containers have been developed with built-in transport chains, in which the moldings are used only at the task end of the stacking container and then further promoted by the transport chains to a respective conveying step. The construction cost here is very high for the individual stack container; In addition, this must be done in most cases, a manual loading and unloading. A mechanization of loading and unloading was previously the particular difficulty that the stacked moldings, such as body parts in the automotive industry, are very sensitive to surface damage in most cases, so that mutual contact of the molding surfaces must be excluded by the fact that the moldings be kept not only in the stack container, but also during loading and unloading in a predetermined, but the smallest possible distance. Object of the invention The object of the invention is to provide a device of the type mentioned, which allows a completely automatic and in adaptation to the high operating speeds of modern stamping press very fast loading of stacking containers. The structure of the device should be as simple and space-saving; The construction of the stacking container should be as simple as possible. Both the stacking device and the associated stacking container should be quickly and with little effort on different moldings and thus universally applicable. The stacking device should be used without structural changes alone by different controls for loading other stack containers, for example, at the top of open containers; It should also be usable for unstacking from stacking containers without the need for constructive changes. Explanation of the essence of the invention This object is achieved in that in a base frame a gripping carriage is longitudinally movable, which carries a downwardly projecting, vertically movable gripping carriage on which a pivot support is pivotally mounted about a horizontal pivot axis, and that the pivot support at least two opposing, relatively movable Profile gripper has. The swivel carrier can take over with his profile grippers the flat lying conveyed molded parts individually or already in ordered groups. The swivel carrier brings the moldings in the desired vertical position and gives them in the stack container at the respectively required place ordered. A particularly high working capacity of the device can be achieved by arranging a stacking station at the end of a longitudinal conveyor conveying the molded parts, which has a lifting device for the individual molded parts and separately operable lateral profile grippers for a plurality of molded parts stacked one above the other at a distance. From the molded in quick succession moldings a stacking group is formed in this stacking station by successively raised the individual moldings and held by the feweils associated profile grippers. This ordered stack group can then be taken over by the profile grippers of the pivot carrier and placed in the stack container. As much time is available for this process as for the manufacture and conveyance of the several moldings for the