Abstract
A workpiece transport element for placement on a transport belt and for receiving workpieces, including a bearing pin disposed on a holding element for engaging in an opening in the workpieces for support during transport, wherein the holding element includes at least two bearing pins that are movably mounted with respect to the holding element and have different diameters, wherein the bearing pins are selectively movable into a transport position or out of the transport position. The workpiece transport element can also include bearing pins including a tip, wherein, for storing shaft-like parts, a vertical guide rail including a counter-holder that is movable thereon in a longitudinal direction of the guide rail and includes a holding tip is provided.
Claims
1. A workpiece transport element for placement on a transport belt and for receiving workpieces, comprising a bearing pin disposed on a holding element for engaging in an opening in the workpieces for support during transport, wherein the holding element comprises at least two bearing pins that are movably mounted with respect to the holding element and have different diameters, the bearing pins being selectively movable into a transport position or out of the transport position.
2. The workpiece transport element according to claim 1, the bearing pins comprising a tip, and further including a vertical guide rail comprising a counter-holder that is movable thereon in a longitudinal direction of the guide rail and comprises a holding tip, which is located on the same axis as the bearing pin.
3. The workpiece transport element according to claim 2, wherein the guide rail, at the upper end, comprises a retention device for holding the movable counter-holder in a parked position.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In the drawings:
[0012] FIGS. 1A-1C show a workpiece transport element including movably mounted bearing pins and a guide rail including a movable counter-holder in the parked position, including a gear wheel on the bearing pin (FIG. 1A); including a worm shaft, which is seated on a bearing pin and held by the counter-holder (FIG. 1B); and including a splined shaft between the bearing pin and the holding tip at the counter-holder (FIG. 1C);
[0013] FIG. 2 shows a conveyor belt feed system including workpiece transport elements disposed thereon by way of example; and
[0014] FIGS. 3A-3B show a workpiece transport element in the region of a transfer site, including a schematically illustrated lifting cylinder for the release of a shaft in the release position (FIG. 3A) and in the holding position (FIG. 3B).
DETAILED DESCRIPTION OF THE INVENTION
[0015] FIG. 1A shows a workpiece transport element 1, including a transport element plate 2 and a linear guide, disposed perpendicularly thereto, including a guide rail 3, along which a counter-holder 4 including a holding tip 5 can be moved. In this figure, the counter-holder 4 is located in a parked position and is held by a detent pin 9 spring-mounted in the axial direction. A holding element 6 including a rotating element 7, which is rotatably mounted about a horizontal axis and, in this exemplary embodiment, includes two bearing pins 8 having different diameters, is disposed on the transport element plate 2. The horizontal axis can also be rotated by 90° in relation to the illustration in the exemplary embodiment. The bearing pins 8 match the central borehole in a gear wheel 11 placed thereon. In the exemplary embodiment, the bearing pins 8 are provided with stepped diameters, so that in this way an even greater number of different borehole diameters can be covered than would result from only two cylindrical bearing pins. The bearing pins 8 include a tip 14, which is not required for the gear wheel 11, but is required for the parts shown in FIGS. 2 and 3A-3B.
[0016] FIG. 1B shows the same workpiece transport element 1 including a worm shaft 12, which rests with the lower end-face opening on the bearing pin 8 and which is held with the upper end-face opening by the holding tip 5 of the counter-holder 4, which is no longer located in the parked position shown in FIG. 1A. Rotation of the rotating element 7 is not necessary when changing from disk-shaped parts 11 to shaft-shaped parts 12, 13. Conversely, this may be necessary due to the diameter of the central borehole in the disk-shaped part 11.
[0017] FIG. 1C shows the workpiece transport element 1 including a splined shaft 13, which is held corresponding to the worm shaft 12 in FIG. 1B.
[0018] FIG. 2 finally shows a conveyor belt 10 in the form of a conveyor belt feed system on which, corresponding to the available space, a corresponding number of workpiece transport elements 1 can be disposed. Five workpiece transport elements are shown by way of example in the figure. The workpiece transport elements 1 are brought thereby to a transfer position.
[0019] An electrically, hydraulically or pneumatically operated lifting cylinder 15, including a lifting element 16 that is movable in the axial direction (indicated by arrows) and moves the counter-holder 4 from the holding position into a release position (FIG. 3A) and releases this for the counter-holder 4 simply by moving away so that the counter-holder reaches the holding position due to gravity (FIG. 3B), is present at the transfer position.
[0020] In this way, a machine can be automatically loaded over a certain time period using a conveyor belt 10 and the workpiece transport elements 1.
