摘要:
A multiple optical axis photoelectric sensor capable of performing muting processing adapted to a plurality of kinds of workpieces having different heights without the need for complicated pre-setting according to the kinds of workpieces, is provided. The multiple optical axis photoelectric sensor is provided with a light projecting device and a light receiving device, which forms a plurality of optical axes together with the light projecting device. In at least one portion of a detection area, which is set according to the optical axes, a muting area for nullifying the result of detection of blocked light is set up. A sensor system acquires a range of blocked light corresponding to the blocked optical axis during passage of a workpiece, and alters the muting area of the multiple optical axis photoelectric sensor from a first range to a second range.
摘要:
The subject matter disclosed herein describes an optical sensor used in a safety system. The sensor includes two pixel matrices on a single substrate. Each of the pixel matrices are arranged in a row and column format, and pixels from one matrix are interspersed with pixels from the other matrix such that alternating pixels in each row and column belong to separate matrices. Two sets of selection logic allow each matrix to be enabled separately. Additional monitoring logic is included to detect shorted pixels and/or shorted selection lines. In addition, the frames generated by each pixel array may be compared to detect variation in performance between arrays.
摘要:
A slicing apparatus and a weighing and classifying conveyor combination with cleanup position wherein, the elevated food article feed mechanism can be collapsed to a maintenance position, the weighing and classifying conveyor is oriented at a distance from the slicing apparatus and the slicing head cover is automatically lifted to an open cleanup position. The machine has laser intrusion detectors that are used to shut down systems when an unwanted intrusion by a person or object is detected.
摘要:
An imaging system, safety system or combined imaging and safety system includes a light transmitter and a corresponding receiver. Image data relating to a machine tool and/or workpiece is derived and processed to determine information regarding the tool and/or tool position and/or extent of work carried out on the workpiece. A screen, such as a shadow screen, can be used to form an image of a profile of the tool tip and end of the workpiece. Tool tip position and extent of work on the workpiece can be derived from the image. Certain aspects are directed to a safety system application for halting a machine or tool when a light beam is interrupted, and can provide progressive muting of beam interruption detection, such as by systematically disregarding or muting signals from rows of receiver array elements as the beam passes through a mute point ahead of a tool.
摘要:
A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).
摘要:
The present invention relates to light curtains, in particular safety light curtains, for monitoring a protective field. Furthermore, the present invention relates to optical units which are part of such a light curtain. An optical unit for an alignment system of a light curtain monitoring a protective field comprises an optical processing element for generating a defined radiation pattern from the radiation emitted by an alignment radiation source, and at least one optical wave guide for guiding radiation from at least one display radiation source to a surface of the optical element which is visible to an observer.
摘要:
A building machine, especially a road finishing machine, comprising a presence detection system. The presence detection system comprises a sensor which is integrated in the control panel of the building machine. By means of the sensor a distance measurement can be carried out, which determines whether the operator is properly seated on the driver's seat of the building machine or whether he stands properly at the standing work place. In order to determine the presence a tolerance range may be specified, which allows a slight movement of the operator on the driver's seat. If the operator approaches the limits of the tolerance range he is asked in time by warning signals to be seated again properly on the driver's seat or adopt a proper position at the standing work place. If the sensor detects no operator on the driver's seat or at the standing work place all of the functions of the building machine are stopped in order to make sure that the work site is safe.
摘要:
An installation includes a machine (2) for packaging products (8) and of a robotic palleting station, both arranged in a same enclosure (1) that is provided with a door (7) that offers access to the palleting station. The installation includes a device which limits the range of movement of the robot (15) in the closed enclosure (1) in order to concentrate the displacements of its gripping head (17) in a restricted space which does not overlap with a safety space, which is defined according to a minimum distance measured from the immaterial barrier located in the enclosure in the vicinity of the door (7). The limiting device includes an electric cam that limits, under the control of the steering control of the robot, the amplitude of the movement of the robot (15) around its main axis and reduces its movement speed.
摘要:
A safety brake device for moving machine elements to prevent injury to the extremities of the operator of a machine if the distance of said operator from the moving machine element is less than a defined safety area. The device is characterized by an arrangement for detecting the operator position, in order to permit operation of the machine only if the operator remains within the defined working area, an arrangement for detecting the position of the extremities of the operator within a predefined safety zone, which enables the required work activities to be performed, and a brake device, by means of which the moving machine element can be immediately stopped if the extremities of the operator go beyond the safety area.
摘要:
An automated sequenced food article tray loading method and apparatus for a slicing machine where food articles can be loaded sequentially into designated and separated lanes of a lift tray and automatically sequentially assume a preload condition. Food article separation is maintained on the lift tray after the food articles are loaded. A food article sweep mechanism receives the food articles on the lift tray in their separated positions and transfers the food articles into the food article feed mechanism while maintaining the separated positions. The food article sweep mechanism is a substantially open structure without enclosing walls.