摘要:
A strapping machine for positioning a strap material around an associated load and tensioning the strap material around the load includes a frame for supporting the load, a chute positioned on the frame for receiving the strap material and orienting the strap material around the load, a strap supply and a strapping head for extracting the strap from the supply, feeding the strap through the chute around the load, passing the strap from the chute around the load, retracting and tensioning the strap. The strapping head includes feed rollers and retraction rollers for feeding and retracting the strap and a winder for tensioning the strap around the load. The winder is positioned between the feed and retraction rollers and the strap supply. The winder includes a rotating head portion having a stationary element and a pivotal element. The stationary and pivotal elements each define an outer surface around which the strap material is wound and a slot therebetween for receiving the strap material. The stationary and pivotal elements each further define a gripping portion at about respective ends opposingly facing one another. The pivotal element is pivotal between an open position in which the gripping portions are spaced from one another and a closed position in which the gripping portions cooperate with one another to engage and secure the strap material therebetween. The winder rotates from a home position in which the winder is in the open position and an other than home position in which the winder is in the closed position to exert a tension in the strap.
摘要:
A strapping machine for positioning a strap material around an associated load and tensioning the strap material around the load includes a frame for supporting the load, a chute positioned on the frame for receiving the strap material and orienting the strap material around the load, a strap supply and a strapping head for extracting the strap from the supply, feeding the strap through the chute around the load, passing the strap from the chute around the load, retracting and tensioning the strap. The strapping head includes feed rollers and retraction rollers for feeding and retracting the strap and a winder for tensioning the strap around the load. The winder is positioned between the feed and retraction rollers and the strap supply. The winder includes a rotating head portion having a stationary element and a pivotal element. The stationary and pivotal elements each define an outer surface around which the strap material is wound and a slot therebetween for receiving the strap material. The stationary and pivotal elements each further define a gripping portion at about respective ends opposingly facing one another. The pivotal element is pivotal between an open position in which the gripping portions are spaced from one another and a closed position in which the gripping portions cooperate with one another to engage and secure the strap material therebetween. The winder rotates from a home position in which the winder is in the open position and an other than home position in which the winder is in the closed position to exert a tension in the strap.
摘要:
A strapping machine for positioning a strap material around an associated load and tensioning the strap material around the load includes a frame for supporting the load, a chute positioned on the frame for receiving the strap material and orienting the strap material around the load, a strap supply and a strapping head for extracting the strap from the supply, feeding the strap through the chute around the load, passing the strap from the chute around the load, retracting and tensioning the strap. The strapping head includes feed rollers and retraction rollers for feeding and retracting the strap and a winder for tensioning the strap around the load. The winder is positioned between the feed and retraction rollers and the strap supply. The winder includes a rotating head portion having a stationary element and a pivotal element. The stationary and pivotal elements each define an outer surface around which the strap material is wound and a slot therebetween for receiving the strap material. The stationary and pivotal elements each further define a gripping portion at about respective ends opposingly facing one another. The pivotal element is pivotal between an open position in which the gripping portions are spaced from one another and a closed position in which the gripping portions cooperate with one another to engage and secure the strap material therebetween. The winder rotates from a home position in which the winder is in the open position and an other than home position in which the winder is in the closed position to exert a tension in the strap.
摘要:
A strapping machine of the type configured to feed a strapping material around a load, position, tension and seal the strapping material around the load includes a weld head having a readily removable and serviceable weld blade. The head includes a body, a blade arm biasedly mounted to the body and a carrier receivable in the blade arm and movable between an operating position and a service position. The carrier is securable in the blade arm, without tools, in the operating position and the service position. The weld blade is fixedly mounted to the carrier.
摘要:
A feed head for a strapping machine includes a frame, a feed wheel, a tension wheel, and a feed and take-up motor mounted to the frame and operably connected to the feed wheel. The feed and take-up motor operates in forward and reverse directions to feed strapping material through the strapping machine, and to take up strapping material from the strapping machine. A tension motor is operably connected to the tension wheel and operates in a reverse direction to tension the strapping material around the load. The tension wheel is movable toward and away from the feed wheel and engages the feed wheel during strap tension and disengages from the feed wheel during strap feed. A pivot assembly operably mounts the tension motor and tension wheel to the frame to move the tension wheel toward and into engagement with, and out of engagement with the feed wheel.
摘要:
A strapping machine feed system for automatically detecting a strap error or fault, thereby stopping strap retraction or take-up, and refeeding the strap into the strapping head following the error or fault. The feed system includes a pair of tensioning wheels disposed along a strap path proximal a strap supply, and a pair of feed wheels, defining a nip therebetween, disposed along the strap path proximal the strapping head. A feed wheel drive and a tensioning wheel drive are respectively connected to the feed wheels and the tensioning wheels. A sensor disposed along the strap path generates a signal to the feed wheel drive and tensioning wheel drive, indicating movement or lack of movement along the strap path, thus causing the feed wheels or tensioning wheels to rotate in both a forward and reverse direction.
摘要:
A strap path access guide is configured for use in a strapping machine of the type having a feed assembly a chute and a strapping head disposed between the feed assembly and the chute. The strapping machine is configured to receive first and second courses of associated strap material, position, tension and seal the strap material around a load. The strap path access guide is disposed along the feed assembly between a pair of tensioning wheels and the strapping head. The strap path access guide includes a fixed lower guide portion extending between the tensioning wheels and the strapping head. The fixed lower guide portion defines a lower surface of the strap path. A pivotable upper guide portion is pivotable about a pivot that is spaced from and rearwardly beyond the tensioning wheels. The upper guide portion is pivotable between a closed position in which the upper and lower guide portions cooperate with one another to define the strap path and an open position in which the strap path is fully accessible. The upper guide portion is pivotable in a plane transverse to a direction of travel of strap material through the strap path. A latching element secures the upper guide portion in the closed position.
摘要:
A novel method and apparatus for feeding and tensioning a strap in a power strapping machine. The apparatus includes a strap feeding mechanism, a strap tensioning mechanism, and a pivoting roller carriage pivoted by a feeding and tensioning cam. The pivoting roller carriage first actuates the strap feeding mechanism to engage a portion of a strap and feed the strap toward a strap application assembly where the strap is formed in a loop about an object or group of objects. The strap feeding and tensioning mechanism actuates a first gripper that secures an end of the strap in the strap application assembly. The pivoting roller carriage then actuates the strap tensioning mechanism to engage a portion of the strap and apply a tension to the looped strap. The strap feeding and tensioning apparatus also actuates a second gripper that secures the tensioned strap in a closed loop about the package so that the strap application assembly may form a strap joint sealing the strap in the closed loop. In the event that the strap is not properly engaged by the first gripper, the strap will be fully retracted from the strap application assembly by the strap tensioning mechanism and the strap will be directed into a strap stretch-out housing where it will remain until the strap feeding mechanism again engages a portion of the strap and re-feeds the strap toward the strap application assembly. The weight and position of the strap disposed in the strap stretch-out housing prevents the strap from withdrawing entirely from the strap feeding mechanism thereby ensuring that the strap feeding mechanism will engage and re-feed the strap to the strap application assembly automatically.
摘要:
A floating strapping head is for use in a strapping machine of the type for positioning, tensioning and sealing a strapping material to itself around a load. The strapping machine has a frame and a strap chute. The floating strapping head includes a tensioning module, a separate sealing module and a drive assembly operably connected to the tensioning module and the sealing module. The head includes a guide along which the tensioning and sealing modules move laterally, together and toward and away from one another. When tension is drawn in the strapping material with an end of the strapping material gripped by the sealing head and an opposite portion of the strapping material gripped by the tensioning module, the drive is actuated to move the tensioning and sealing modules away from one another. The tensioning and sealing modules float, moving along the guide, as one, to equalize the tension in the strapping material on either side of the strapping head.
摘要:
A clearing and reloading assembly is configured for use with a strapping machine of the type having an infeed arrangement at about a strap material inlet to the machine, a feed assembly and a chute, the strapping machine defining a strap material holding region between the infeed arrangement and the feed assembly. The strapping machine is configured to receive first and second courses of associated strap material, position, tension and seal the strap material around a load. The clearing and reloading assembly includes a body, a driven wheel and a bearing element opposite of the driven wheel. The bearing element and the driven wheel define a strap path therebetween. A strap cutter is disposed for movement into and out of the strap path. A first peripheral portion of the driven wheel is configured to define a gap between the first portion and the bearing element such that the strap material can slip therebetween. A second peripheral portion of the driven wheel is configured such that the strap material is gripped between the second portion and the bearing element, and a third peripheral portion of the driven wheel is configured such that the strap material is pinched between third portion and the bearing element. The cutter is movable into the strap path to sever the strap material.