摘要:
A device and a method for separating sheet material is provided. The separation of sheet material is not effected statically, but a suitable pick-up position and/or a suitable pick-up mechanism is selected for each sheet material piece, for example in dependence on the quality of a surface of the sheet material piece to be picked up, in order to pick up the sheet material piece from the sheet material stack and remove it from the same.
摘要:
A lateral positioning device (100) for a sheet element (20, 20′) in a sheet element processing machine; a detector lever (130) articulated relative to a horizontal axis, which performs a descending movement from a high position to a low position; a first end (132) of the detector lever (130) contacts, in a low position of the lever, with an upper face of the sheet element. A second end (133) of the detector lever (130) is fitted with a target (135) that cooperates with a position detector (140) to generate a signal dependent on the thickness of the sheet element (20, 20′) and the number of sheet elements (20, 20′) present at the level of the first end (132) of the detector lever (130).
摘要:
A centering device for a plate-shaped workpiece comprises: a table (21) having a conveyor mechanism (23) for conveying a plate-shaped workpiece (10) in the horizontal direction; a camera (56) for taking an image of the plate-shaped workpiece (10) placed on the table (21); a table movement mechanism (28) for moving the table (21) horizontally in the direction orthogonal to the conveyance direction; a table rotation mechanism (60) for rotating the table (21) about a vertical axis; a computation unit (58) for comparing target central position information and information acquired by the camera (56) and computing the movement amount of the conveyor mechanism (23), the movement amount of the table movement mechanism (28), and the movement amount of the table rotation mechanism (60); and a control unit (59) for controlling the conveyor mechanism (23), the table movement mechanism (28), and the table rotation mechanism (60) on the basis of the movement amounts calculated by the computation unit (58).
摘要:
A device and a method for separating sheet material is provided. The separation of sheet material is not effected statically, but a suitable pick-up position and/or a suitable pick-up mechanism is selected for each sheet material piece, for example in dependence on the quality of a surface of the sheet material piece to be picked up, in order to pick up the sheet material piece from the sheet material stack and remove it from the same.
摘要:
To provide a plate supply and discharge device and a printing plate forming device which are capable of transferring plates and printing plates of various sizes and preventing the plates and printing plates from being damaged in the plate supply and discharge device (printing plate forming device). A plate supply and discharge unit (4) which supplies a plate (P1) to a drawing unit (3), receives a printing plate P2, which is obtained by drawing an image on the plate P1, from the drawing unit (3), and delivers it to a processor. The plate supply and discharge unit includes a plate supply table (41) for allowing the plate (P1) to float at atmospheric pressure, moves the plate (P1) in a state of being allowed to float at atmospheric pressure above the plate supply table (41), and supplies it to the drawing unit (3).
摘要:
An item handling system includes a vacuum source, a transport element defining a plurality of vacuum openings in fluid communication with the vacuum source to create a securing force on an item proximate to the transport element for holding the item in contact with the transport element, and a drive element for driving the transport element to transport the item. The transport element further defines a plurality of sensor openings arranged in two substantially parallel arrays along a longitudinal direction of the transport element. The system further includes a sensor associated with each array of sensor openings for sensing energy passing through the sensor openings to thereby sense the item on the transport element. Each sensor is disposed at a common longitudinal position relative to the transport element. Sensing the item corresponds to a condition where the sensor associated with each array is blocked.
摘要:
A control system and method for a sheet registration device including a general unit which determines desired contact point velocities for moving a sheet along a reference trajectory. The contact point velocity determination is independent of the sheet registration device. A specific unit is operably connected to the general unit. The specific unit determines registration device specific operating parameters for controlling registration device actuators to move the sheet along the reference trajectory.
摘要:
A sheet processing apparatus is provided, which is capable of achieving high quality processing and maintaining high productivity without giving rise to problems such as sheet jam or damage of sheets even when various sheets having different attributes are conveyed. A buffer roller 505 is inhibited from carrying out a sheet staying operation in accordance with the type of sheets conveyed from an upstream side of the apparatus, to be conveyed to a downstream side of the apparatus via the buffer roller 505.
摘要:
The position of sheets in a printing press is measured. A problem in transporting sheets through the printing press is how to guarantee the correct orientation and lay of the sheets, which must be guaranteed particularly in the printing operation. There is provided a device for precisely determining and correcting the positions of sheets in printing presses. Margin regions of a sheet are respectively imaged, projection data are transmitted to a computing unit, and the position of the sheet is calculated with the aid of the projection data by way of an image recognition algorithm. Furthermore, the computed positions of the sheet are compared to positions which are stored in the computing unit, and from the comparison, position deviations are computed, which are transmitted to the printing press and corrected by way of a sheet registration device.
摘要:
A media holding apparatus includes a tray having a support surface configured to receive media and a media stop carried by the tray. The media stop is movably supported for continuously adjustable positioning relative to the tray to conform dimensionally with media received in the tray. The apparatus also includes a position-detecting sensor associated with the tray and the media stop which is operative to generate a unique electrical pattern corresponding with a detected position of the media stop relative to the tray. The unique electrical pattern is indicative of the size of the media detected in the tray. A method is also provided.