Abstract:
A wrapping apparatus (100) and method utilize a corner rotation angle-based wrap control that controls the rate at which packaging material (108) is dispensed based on the rotational position of one or more corners of the load (110) during relative rotation established between the load and a packaging material dispenser (106). The locations of one or more corners on a load may be sensed or otherwise calculated, and when combined with a sensed or calculated rotational position of the load relative to a packaging material dispenser, the locations of the corners relative to the packaging material dispenser may be determined and utilized to control the dispense rate of the packaging material dispenser, e.g., by determining which corner is currently driving an effective consumption rate of the load and/or determining when to apply a controlled intervention to the load.
Abstract:
A clamp assembly (106) may include a first jaw member (108) which may have a selectively inflatable bladder (114). In addition, the clamp assembly (106) may further include a second jaw member (110) which may have a belt (128). The first jaw member (108) and the second jaw member (110) may be configured to clamp material between the selectively inflatable bladder (114) and the belt (128).
Abstract:
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.
Abstract:
A palletizer for automatically building a load with product from an infeed area is disclosed. It includes means for defining a desired volume of a load including a length sensor, a width sensor, and a height sensor. It also includes means for transporting product from an infeed area to the load. A controller is associated with means for defining the desired volume, the controller being configured to receive signals from the sensors and to automatically control movement of the means for transporting. The controller is configured to automatically determine when the volume is filled. In another aspect, a method of building a load with product from an infeed area is provided. The method includes defining a desired volume of the load using a length sensor, a width sensor, and a height sensor. It also includes automatically filling the volume with product, and determining when the volume is filled.
Abstract:
Control of a wrapping apparatus (600) is facilitated by enabling an operator to input a load containment force requirement and/or a minimum number of layers of packaging material (618) to be applied to a load (606), with a wrap control system (650) automatically determining wrap force and other parameters required to meet user input requirements and/or parameters to minimize the expertise required of an operator and to provide more consistent and reliable wrapping of loads (606). In addition, a wrapping apparatus (600) may be controlled to apply at least a minimum number of layers of packaging material (618) to a load (606) throughout a contiguous region (630) thereof.
Abstract:
A wrapping apparatus (1 00) and method utilize an effective circumference- based wrap speed model that dynamically controls the rate at which packaging material (108) is dispensed based on an effective circumference of a load (1 10) during relative rotation established between the load and a packaging material dispenser (1 06). The effective circumference of a load may be indicative of an effective consumption rate of the load, and may referto a dimension or size of a tangent circle (420) that is substantially centered at the center of rotation (408) of the load and substantially tangent to a line substantially extending between a first point (414) proximate to where the packaging material exits the dispenser and a second point (41 8) proximate to where the packaging material engages the load. The effective circumference of the load dynamically changes throughout the relative rotation of the load, and by controlling the dispense rate based at least in part on this dimension, fluctuations in tension in the packaging material may be reduced, often enabling containment force to be increased while reducing the risk of breakage in the packaging material.
Abstract:
A method and apparatus for providing corners of a load (110) with cornerboards (152) prior to wrapping the load is provided. The method may include providing a load on a load transport surface, removing a cornerboard from within a magazine (150) by a gripper (170), and transporting the cornerboard to a corner of the load with the gripper. Relative rotation may be provided between the stretch wrap packaging material dispenser and the load to wrap the stretch wrap packaging material around the cornerboard and the load. If the cornerboard is not pre-formed, it is folded prior to transport to the load. The cornerboard is secured to the corner of the load with the stretch wrap packaging material. In a preferred embodiment, four magazines and four grippers are provided, such that four cornerboards can be carried to the load at the same time.
Abstract:
A method, apparatus and program product implement top layer containment operations to optimize containment of various types of loads such as loads with top/slip sheets, ragged topographies, and/or inboard portions. Bidirectional control of the elevation of a web of packaging material may be performed within one or more revolutions between a load and a packaging material dispenser to selectively engage one or more corners of the load with a web of packaging material while passing the web of packaging material inwardly of one or more other corners of the load.
Abstract:
A film dispenser (12) for stretch wrapping machines(10) includes at least one roller (18) and a first brake (42) engageable with a braking surface (52) the one roller. The first brake (42) may include a flat brake pad (62) that is pivotally movable for engagement with the braking surface (52), and is adjustable between a first configuration engaged with the braking surface (52) and applying a first braking force, and a second configuration disengaged from the braking surface (52) or only minimally engaged with the braking surface (52) such that any braking force applied is substantially less than the first braking force. A supply roll (18) support for a film dispenser (12) includes an elongate post (32) sized to receive a roll of film (14) thereon, and a pliable sheet (160) coupled with the outer peripheral surface (150) of the post (32) and extending around at least a portion of the outer peripheral surface (150).
Abstract:
A method and apparatus for securing a final tail of film to a wrapped load are provided. The method includes dispensing a film web from a dispenser (102) and providing relative rotation between the load and the dispenser (102) to wrap the film web around the load. A blower (160) is actuated and applies a stream of air to the film web as the film web extends along a film path between a corner of the load and the dispenser. While applying the stream of air to the film web, the film web is weakened between the corner of the load and the dispenser (102) and then severed, and the final tail of film is secured to the load with the stream of air.