A wrapping machine comprising a base and a wrapping arm connected to the base and configured to be movable relative to the base. The wrapping arm includes a carriage vertically movable on the wrapping arm, with the carriage having a roll of wrap film. The wrapping machine also includes a bumper assembly movable with the wrapping arm. The bumper assembly includes a bumper and an actuator, wherein engagement of the bumper with an external object will actuate the actuator to stop movement of the wrapping arm about the product. The wrapping arm can include side tubes connected by a connection tube, with the side tubes forming a link recess between the side tubes. Each of the side tubes includes an exteriorly facing slot, with the carriage riding on the side tubes along the slot. A link moves within the link recess to move the carriage.

A stretch wrap applicator includes one or more cutting members arranged, for instance, in parallel and designed to engage the stretch wrap to cut it into strips as it is dispensed from the roll. The strips are then gathered and stretched into strings that are wrapped around the object. The strings formed from the stretch wrap can stretch to an extended length while maintaining excellent tensile strength to secure heavy loads. In a further approach, an applicator can selectively gathers or not gather the stretch film in such a way as to create a solid string or a film during continuous application to an object so that the user can rotate from film to string and then back to film. Such approaches save on the volume of stretch wrap used to secure a load without significantly compromising strength.

A method, apparatus and program product monitor a wrap force during a wrap cycle to dynamically control the dispense rate of a packaging material dispenser to meet a desired containment force to be applied to a load. A conversion may be performed between wrap force and containment force for the monitored wrap force or a containment force parameter to facilitate the performance of a comparison between the monitored wrap force and a containment force parameter associated with the desired containment force to be applied to the load. A wrap force parameter may also be dynamically adjusted, and in some instances, the dynamic adjustment may be responsive to monitored wrap force, and may be used to meet a load containment force requirement for a load. In other instances, the dynamic adjustment may be responsive to monitored packaging material breaks to reduce the occurrence of packaging material breaks.

Disclosed is an M-shaped fully automatic winding machine provided with a main controller, a film clamping device, an automatic film cutting device, and a film lifting device. The film clamping device is provided on an M-shaped turntable, is driven to work by a second electric motor and uses a storage battery as a power source. A secondary controller controlling the second electric motor to work is also provided on the M-shaped turntable, is in a communication connection with the main controller via wireless data and is controlled by the main controller. A film clamping working position of the film clamping device is in front of an upright post when the M-shaped turntable turns to the angle of the original position. The M-shaped winding machine is also provided with a storage battery charging connection device. When the M-shaped turntable turns to the angle of a charging position, a turntable upper part and a turntable outer part of the charging connection device can be electrically connected. A driving electric motor of a film frame lifting device, the driving electric motor of the M-shaped turntable, and the power devices in the automatic film cutting device and the film lifting device are controlled by the main controller. The M-shaped winding machine can realize automatic film clamping and fully automatic film winding.

Disclosed is an M-shaped fully automatic winding machine provided with a main controller, a film clamping device, an automatic film cutting device, and a film lifting device. The film clamping device is provided on an M-shaped turntable, is driven to work by a second electric motor and uses a storage battery as a power source. A secondary controller controlling the second electric motor to work is also provided on the M-shaped turntable, is in a communication connection with the main controller via wireless data and is controlled by the main controller. A film clamping working position of the film clamping device is in front of an upright post when the M-shaped turntable turns to the angle of the original position. The M-shaped winding machine is also provided with a storage battery charging connection device. When the M-shaped turntable turns to the angle of a charging position, a turntable upper part and a turntable outer part of the charging connection device can be electrically connected. A driving electric motor of a film frame lifting device, the driving electric motor of the M-shaped turntable, and the power devices in the automatic film cutting device and the film lifting device are controlled by the main controller. The M-shaped winding machine can realize automatic film clamping and fully automatic film winding.

In a method for providing a bale of crop material that is only partially wrapped in a film, a bale of crop material is wrapped in a film with an automatic bale wrapping apparatus. Subsequently the film is provided with a plurality of perforations, and it is ensured that the perforations are present/positioned in an upper half of the bale. This ensures that there is good moisture control of the bale, with moist air able to escape, while stopping ingress of rain water. The bales are mostly dry hay or the like, and favourable perforations are radial slits. There is also provided a system for providing such bales with position controlled perforations.

In a method for providing a bale of crop material that is only partially wrapped in a film, a bale of crop material is wrapped in a film with an automatic bale wrapping apparatus. Subsequently the film is provided with a plurality of perforations, and it is ensured that the perforations are present/positioned in an upper half of the bale. This ensures that there is good moisture control of the bale, with moist air able to escape, while stopping ingress of rain water. The bales are mostly dry hay or the like, and favourable perforations are radial slits. There is also provided a system for providing such bales with position controlled perforations.

The present invention provides a central shaft mechanism, which is arranged on the base of a winding machine, including a central shaft component, a central shaft is arranged in the central part of the central shaft component, the central shaft component is also provided with a bearing support structure and a plurality of first limiting structures, and the central shaft component is fixed and limited in the base of the winding machine through the first limiting structures. The central shaft mechanism of the present invention has stable position, stable and reliable operation, and can reduce the working noise and noise during operation. In addition, it can be packed separately from the base during transportation, and can be quickly installed on site, which can not only provide more stable support, but also reduce the height of the turntable of the height winding machine.

Dual and multi-modulator projector display systems and techniques are disclosed. In one embodiment, a projector display system comprises a light source; a controller, a first modulator, receiving light from the light source and rendering a halftone image of said the input image; a blurring optical system that blurs said halftone image with a Point Spread

Function (PSF); and a second modulator receiving the blurred halftone image and rendering a pulse width modulated image which may be projected to form the desired screen image. Systems and techniques for forming a binary halftone image from input image, correcting for misalignment between the first and second modulators and calibrating the projector system—e.g. over time—for continuous image improvement are also disclosed.

A robot tool, a robot system and a method for packaging coils of sheet metal. A robot tool for coil packaging, having two ends, each end being provided with a coupling tool piece configured to interface with a robot arm; a roll holder shaft configured to hold a roll of wrapping material, the holder shaft at one end being rotatably mounted substantially midway between said ends and projecting substantially perpendicular to an axis extending between said ends. A robot system for coil packaging, having two industrial robots, each robot being provided with a robot arm having a coupling robot piece configured to interface with a robot tool; and a robot tool, the robot tool having two ends, each end being provided with a coupling tool piece configured to interface with a said robot arm.