Medium conveying apparatus in which reflectivity in periphery of opening for guiding light is equal to or less than predetermined ratio
US-2022169464-A1 · Jun 2, 2022 · US
Sheet processing machine
US12534329B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12534329-B2 |
| Application number | US-202118248772-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 6, 2021 |
| Priority date | Oct 21, 2020 |
| Publication date | Jan 27, 2026 |
| Grant date | Jan 27, 2026 |
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- Title
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Abstract
Official abstract text for this publication.
A sheet processing machine ( 10 ) with a jam detection device ( 44, 46 ), the jam detection device ( 44, 46 ) comprising a light emitting element and a light receiving element forming a light barrier in a detection zone ( 53, 78 ) of a processing station of the sheet processing machine ( 10 ). The jam detection device ( 44, 46 ) further comprises a control unit ( 48 ) being connected to the light receiving element and being adapted to register if the light barrier is interrupted.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A sheet processing machine comprising: a jam detection device including: a light emitting element and a light receiving element forming a light barrier in a detection zone of a processing station of the sheet processing machine, and a control unit being connected to the light receiving element and being adapted to register if the light barrier is interrupted, wherein the light barrier formed in the detection zone by the light emitting element and the light receiving element is a light curtain comprising more than one light ray, the control unit being adapted to register if one or more of the light rays is interrupted, wherein the processing station comprises a tool being at least partially arranged in the detection zone, and wherein the control unit comprises a storage module for storing information about the tool. 2 . The sheet processing machine according to claim 1 , wherein the light receiving element and the light emitting element are mounted on a first rail and a second rail, respectively, the first rail and the second rail especially being parallel to each other. 3 . The sheet processing machine according to claim 1 , wherein the detection zone is arranged underneath a rack for collecting sheets or blanks processed by the sheet processing machine. 4 . The sheet processing machine according to claim 1 , wherein the information about the tool comprises a ray blocking map, the ray blocking map indicating if the light barrier is interrupted by the tool, especially if one or more of the light rays are interrupted by the tool. 5 . The sheet processing machine according to claim 4 , wherein the information about the tool includes a tool identifier. 6 . The sheet processing machine according to claim 5 , wherein the control unit is adapted to automatically determine the ray blocking map of the tool if the tool identifier is not already stored in the storage module with an associated ray blocking map. 7 . The sheet processing machine according to claim 4 , wherein the sheet processing machine further comprises a human-machine-interface connected to the control unit. 8 . The sheet processing machine according to claim 7 , the control unit being adapted to transmit a warning message to the human-machine-interface if the light barrier is interrupted, especially wherein the warning message is transmitted only if the interruption of the light barrier does not correspond to the ray blocking map of the tool stored in the storage module. 9 . The sheet processing machine according to claim 1 , wherein the control unit is adapted to enter into a learning mode for obtaining the information about the tool. 10 . The sheet processing machine according to claim 1 , wherein the tool is a blanking tool.
Assignees
Inventors
Classifications
Optimisation, self-adjustment, self-learning processes or procedures, e.g. during start-up · CPC title
Array arrangement, i.e. row of emitters or detectors · CPC title
in barrier arrangements, i.e. emitter facing a receptor element · CPC title
Jam · CPC title
Identification · CPC title
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Frequently asked questions
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- What does patent US12534329B2 cover?
- A sheet processing machine ( 10 ) with a jam detection device ( 44, 46 ), the jam detection device ( 44, 46 ) comprising a light emitting element and a light receiving element forming a light barrier in a detection zone ( 53, 78 ) of a processing station of the sheet processing machine ( 10 ). The jam detection device ( 44, 46 ) further comprises a control unit ( 48 ) being connected to the lig…
- Who is the assignee on this patent?
- Bobst Mex Sa
- What technology area does this patent fall under?
- Primary CPC classification B65H31/32. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 27 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).