DE2714855A1 - TRANSPORTABLE STORAGE FOR TRANSPORTING WORK PIECES BETWEEN PROCESSING MACHINES - Google Patents

Description

27H855

The invention relates to a transportable storage device for transporting workpieces between processing machines according to patent no. (patent application P 25 46 389.2-22).

Like the main patent, the present invention relates to a device for transporting and separating of disc-shaped workpieces with a central bore.

According to the main patent, disc-shaped workpieces with a central bore are during loading or unloading eccentrics acting on the outer circumference, stepped slides or a gripper-like retractable and extendable device held. These devices either have inaccuracies or require expensive actuation devices.

It is the object of the present invention, an exact fixation and a secure tensioning of the disc-shaped To create workpieces with a central bore without additional actuation devices.

A transport device for workpieces according to the main claim is used to solve this problem.

Compared to the device according to the main patent, the present device with a clamping sleeve offers a better one Centering and more precise placement of the workpieces. aside from that

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stands for the gripper arm of the handling device 7 more space available, since the brackets and the like required for the external tension are omitted.

In the drawing is an embodiment of the transport device and explained in more detail in the following description. Show it:

Fig. 1 an operating station for a machine tool with the workpiece magazines and automatic loading and discharge devices according to the present invention;

Fig. 2 is a plan view of the station of Fig. 1; 3 shows a loading or unloading station in section.

In Fig. 1 are on overhead conveyors 1 to be filled magazines 2, to empty magazines 3 and full magazines 4, which to a machine tool 8 are to be promoted, arranged. At each machine tool 8 there is a loading station 5 for loading of the empty magazine 2 with finished workpieces and an unloading station 6 for the piece-by-piece removal of the to machining workpieces from the magazine 3 arranged. For conveying the workpieces from the unloading station or separating device 6 to the clamping device of the machine tool and from this to the loading station 5 is a known one

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Handling device 7, to which, for example, an automatically controlled gripper or the like can be assigned, is provided, as Fig. 2 shows.

The unloading station or separating device 6 according to FIG. 3 consists of a frame 10 in which the lifting cylinder is arranged with its pressure medium connections 11a and 11b. On the frame 10 is centric to the lifting cylinder 11 of the clamping cylinder 12 with its pressure medium connections 12a and 12b is provided and guided in a guide tube 13 by means of a guide piece 23. The guide piece 23 is about a Spacer tube 24 is connected to a tubular part 14b of the receiving plate 14. Here are the spacer tube 24 and tubular part 14b also guided in guide tube 13. The clamping bush is located inside the tubular part 14b 15 out, the lower end of which is connected to the piston rod of the clamping cylinder 12. The top of the Clamping bush 15 has slots 15a for the pawls 18 of the magazine rod and has an inner cone 15b.

The magazine rod 3, which is aligned axially with the lifting cylinder and the clamping cylinder, carries at its lower end an end piece 16 in which the pawls 18 for receiving the lowermost workpiece 9a are mounted. By a spring 19 and a pressure piece 20 (z. B. a ball) the pawls 18 are spread apart.

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Between the end piece 16 _t and the end of the magazine

rod 3, an intermediate piece 21 is arranged on which a Cone 22 is provided.

By actuating the lifting cylinder 11, the receiving plate 14 raised until the lowermost workpiece 9a of the magazine 3 rests. The lifting cylinder 11 is controlled at the same time via the limit switch 17. At the same time, this limit switch 17 triggers an upward movement of the clamping bush 15 by means of a second lifting cylinder 12 until the cone-shaped opening 15b hits the outer cone 22 of the magazine 3 opens and the second lowest workpiece is held by spreading the clamping bush. Simultaneously the pawls 18 moving into the slots 15a of the clamping bushing are pivoted so that the lowermost workpiece 9a rests freely on the AufnähmeteHer 14. Because the second Lift cylinder 12 with the first lift cylinder 11 fully extended is only partially extended, can with subsequent venting of the lifting cylinder and downward movement of the receiving plate 14 with the lowest workpiece 9a, the clamping cylinder, which is still under pressure, is extended to its full height will. In this way, there is automatically a separation between the lowermost workpiece 9a and that above located workpiece 9b, which is held by the clamping sleeve 15. Once it has reached its full height, it will also the clamping cylinder 12 is vented so that now the lifting and clamping cylinders return together to their starting position.

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With the venting of the second lifting cylinder 12 and the downward movement of the clamping bush 15 that begins with it the workpiece 9b is also free and taken up by the pawls 18 which have now been released and spread again.

To prevent the stack of workpieces from falling and the associated sudden impact on the latches, the cone 22 can be led away downwards with a spring (not shown). When moving down of the second lifting cylinder 12 and thus the clamping bush 15, the workpiece stack can follow this movement and is opened the pawls removed without impact. Now the connection between the clamping bush 15 and the cone 22 is also released and the cone 22 is pressed by the spring against a limit stop, which the cone at the level of the second bottom Workpiece holds.

The description of the mode of operation relates to the unloading of a magazine. Likewise, in reverse order, z. B. the magazine 2, are loaded in the station.

03/30/1977
T-PA very-fr. /

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Claims (1)

U714855 ZHNRADFABRIK FRIEDRICHSHAFEN Aktiengesellschaft
Friedrichshafen Transportable storage for the transport of workpieces-between processing machines Addendum to patent
(Patent application P 25 46 389.2-22) Claims 1. Transportable storage unit for transporting workpieces between processing stations, which is designed as a hanging, mobile workpiece magazine, that at removal and loading stations can be driven past, in each of which a platform is provided that can be raised and lowered by a lifting mechanism, which introduces the workpieces from below into the respective magazine or removes them from it, the bottom in each case Workpiece rests on resilient pawls during transport of the workpiece magazine and both in the removal station (6) as well as in the loading station (5) holding elements (14) carrying the lowest workpiece are provided, which are shown in hold the second lowest workpiece at a distance from the pawls (14, 15) according to the patent (Patent application P 25 46 389.2-22), characterized in that 2 / H855 that between the lifting cylinder (11) and the AufnähmeteHer (14) a clamping cylinder (12) and a clamping sleeve (15) are arranged for pivoting the pawls (18) in order to release the lowest workpiece (9a) and for internal clamping of the next workpiece (9b). 2. Transportable storage unit for transporting workpieces between processing stations, which is designed as a hanging, mobile workpiece magazine that is attached to removal and loading stations can be driven past, in each of which a platform is provided that can be raised and lowered by a lifting mechanism is that introduces the workpieces from below into the respective magazine or removes them from it, each of which The lowest workpiece rests on resilient pawls when the workpiece magazine is being transported and both in the removal station (6) as well as in the loading station (5) the respective lowermost workpiece-carrying holding elements (14) are provided are that in their holding position hold the second lowest workpiece at a distance from the pawls (14, 15) after Patent (patent application P 25 46 389.2-22), characterized in that by interaction one in the lifting and lowerable platform arranged and extendable by a second lifting cylinder clamping sleeve with one in the Workpiece magazine arranged, the clamping bush spreading cone an internal clamping of the second lowest workpiece is achieved. 809840/0529 27U855 3. Transportable memory according to claim 2, characterized characterized in that the expanding cone (22) is pressed by means of a spring against a stop arranged in this way, that the cone (22) is at a predetermined height, preferably at the level of the second lowest workpiece and when the downward movement of the second lifting cylinder (12) begins after the receiving plate has been lowered, the cone (22) this follows and the connection between the cone of the portable memory and the clamping bush (15) when placed is released on the spread pawls. 03/30/1977
T-PA Bchx-fr 809840/0529