Timing device for positioning machine parts moving on a straight or circular path
AssigneePWB-Ruhlatec Industrieprodukte GmbH
InventorPaul-Wilhelm Braun
Life of this patent
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Abstract
The invention relates to a timing device for positioning a machine part which is moved by an actuator and a control circuit in a straight or circular path inside a housing. A timing disk or a timing ruler is used as a reference point for the positioning, wherein the timing disk or timing ruler is arranged in a beam path of a light source-sensor unit. A beam mask made of a film material is disposed between a light source and the timing disk or the timing ruler. Spacer elements which face the timing disk or timing ruler, and a positioning and mounting plane for registration with a base plate are provided. Also provided are guide means for the positioning the beam mask inside the housing in front of the light source.
Claims16
A positioning device for positioning a machine part which is moved by an actuator and a control circuit along a path inside a housing, wherein a timing device (3) is used as a reference point for positioning, the timing device (3) is arranged in a beam path of a light source (6) associated with a sensor unit (5), the positioning device comprising
- a beam mask (7) made of a film material;
- and
- guide means (12), (14), (22) for positioning the beam mask (7) inside the housing in front of the light source (6);
- wherein the beam mask (7) is disposed between the light source (6) and the timing device (3) in a mask carrier (8) having a window, wherein the mask carrier (8) integrally comprises spacer elements (9), (18) facing the timing device and maintaining a predetermined spacing between the mask carrier and the timing device by making direct surface contact with the timing device, and wherein the mask carrier (8) further comprises a positioning and mounting plane (10a, 10b) for registration with a base plate (11).
Dependencies are inferred from the claim text.