A method of strapping one or more articles with a strap (10) is described, the method comprising the steps of: providing a strapping device (1) comprising a joining apparatus (1.0) with a joining jaw (1.1) and a joining base (1.2); placing an end portion (10.4) of the strap around the joining base such that a fastening loop (10.5) around the joining base is formed; joining overlapping first and second strap segments (10.1, 10.2) of the fastening loop by the joining apparatus to form a strap joint; placing the strap around the one or more articles such that a third strap segment (10.3) overlaps a segment of the fastening loop; tensioning the strap around the one or more articles; joining the third segment of the strap with the segment of the fastening loop by the joining apparatus; shearing the tensioned strap off from an untensioned bulk portion of the strap; separating the strapping device from the tensioned strap by removing the joining base from the fastening loop.
A strapping device (2) for strapping one or more articles (20) with a strap (10) is described, the strapping device comprising a joining apparatus for joining two overlapping portions of the strap, the joining apparatus comprising a joining jaw (2.1) and a joining base (2.2) arranged to receive the two overlapping portions of the strap therebetween, wherein the joining base comprises a base body (2.21) and a spacer (2.22) releasably connectable with the base body, the spacer comprising at least one lower support surface (2.226, 2.227) for the one or more articles and at least one upper support surface (2.224, 2.225) for the strap, wherein the spacer is configured to be releasable from the base body when the two overlapping portions of the strap are joined.
A drive unit for a strapping device strapping an item to be packed with a plastic tape which is laid around it includes a motorized tensioning device and a motorized welding device for the plastic tape. The tensioning and welding device can be driven by the same electric motor which can be brought alternatively into an operative connection with the devices with freewheels connected therebetween. A problem has occurred in drive units of this type that they are relatively complicated to assembly and have problematic operational reliability under certain boundary conditions. To bypass these problems, the electric motor includes at least one shell extension which protrudes beyond it at one axial end with the result that the drive elements which have up to now been mounted separately in the housing of a strapping device can be supported directly on the electric motor which then acts as a drive unit.
The invention relates to a drive unit for a strapping device for strapping an item to be packed with a plastic tape which is laid around it, having a motorized tensioning device and a motorized welding device for the plastic tape, wherein the tensioning and the welding device can be driven by the same electric motor (1) which can be brought alternatively into an operative connection with said devices with freewheels (4, 5) being connected in between. The problem has occurred in drive units of this type that they are relatively complicated to assemble and have problematic operational reliability under certain boundary conditions. In order to bypass said problems, it is proposed to provide the electric motor (1) with at least one shell extension (22) which protrudes beyond it at one axial end, with the result that the drive elements which have up to now been mounted separately in the housing of a strapping device can be supported directly on the electric motor which then acts as a drive unit.
ABSTRACT A drive unit for a strapping device strapping an item to be packed with a plastic tape which is laid around it includes a motorized tensioning device and a motorized welding device for the plastic tape. The tensioning and welding device can be driven by the same electric motor which can be brought alternatively into an operative connection with the devices with freewheels connected therebetween. A problem has occurred in drive units of this type that they are relatively complicated to assembly and have problematic operational reliability under certain boundary conditions. To bypass these problems, the electric motor includes at least one shell extension which protrudes beyond it at one axial end with the result that the drive elements which have up to now been mounted separately in the housing of a strapping device can be supported directly on the electric motor which then acts as a drive unit. Date recue / Date received 2021-12-09
A strapping apparatus for strapping a tensioning strap around a packaging item includes a frictional wheel that operates against a support to tighten the tensioning strap. The frictional wheel is operatively connected to a drive unit and can be lifted from the support by a swiveling lever. The swiveling lever includes an interrupting element to interrupt the path of action between the frictional wheel and the drive unit so as to be able to lift the frictional wheel in an unloaded state from the tensioning strap.
A pneumatically actuated strapping apparatus for strapping plastic tape around a packaging item including a motorized tensioning device and a motorized welding device for the plastic tape. The tensioning device and the welding device are driven by the same pneumatic motor. The direction of rotation of the pneumatic motor can be inverted. The pneumatic motor is connected to the devices by two freewheeling mechanisms releasing the devices in opposite directions. In order to keep power consumption for evacuating non-operational air low, in a particularly preferred embodiment, switching valves which automatically discharge the nonoperational air to the exterior are integrated into the air intake ducts that are used as evacuation ducts for the non-operational air when the direction of rotation is inverted.
Disclosed is a strapping apparatus for strapping a tensioning strap around a packaging item, comprising a frictional wheel (4) that operates against a support (5) to tighten the tensioning strap. The frictional wheel (4) is operatively connected to a drive unit (12) and can be lifted from the support (5) by a swiveling lever (9). The disclosed strapping apparatus is characterized in that the swiveling lever (9) includes an interrupting element (11) to interrupt the path of action between the frictional wheel (4) and the drive unit (12) so as to be able to lift the frictional wheel (4) in an unloaded state from the tensioning strap.
The invention relates to a pneumatically actuated strapping apparatus for strapping plastic tape around a packaging item, comprising a motorized tensioning device and a motorized welding device for the plastic tape, and a pneumatic control device that has a first manually operated valve for operating the tensioning device and a second manually operated valve for operating the welding device. In order to spare an operator the trouble of obtaining essentially the same tensioning state of the plastic tape prior to the welding step each time a packaging job is repeated, a third valve allows the welding device to be switched to an automatic operating mode.
Disclosed is a strapping apparatus for strapping a tensioning strap around a packaging item, comprising a frictional wheel (4) that operates against a support (5) to tighten the tensioning strap. The frictional wheel (4) is operatively connected to a drive unit (12) and can be lifted from the support (5) by a swiveling lever (9). The disclosed strapping apparatus is characterized in that the swiveling lever (9) includes an interrupting element (11) to interrupt the path of action between the frictional wheel (4) and the drive unit (12) so as to be able to lift the frictional wheel (4) in an unloaded state from the tensioning strap.
The invention relates to a pneumatically actuated strapping apparatus for strapping plastic tape around a packaging item, comprising a motorized tensioning device and a motorized welding device for the plastic tape. The strapping apparatus is characterized in that the tensioning device and the welding device are driven by the same pneumatic motor (8). The direction of rotation of the pneumatic motor can be inverted, the pneumatic motor being connected to the devices by two freewheeling mechanisms releasing the devices in opposite directions. In order to keep power consumption for evacuating non-operational air low, in a particularly preferred embodiment, switching valves which automatically discharge the non-operational air to the exterior are integrated into the air intake ducts that are used as evacuation ducts for the non-operational air when the direction of rotation is inverted.
The invention relates to a pneumatically actuated strapping apparatus for strapping plastic tape around a packaging item, comprising a motorized tensioning device and a motorized welding device for the plastic tape. The strapping apparatus is characterized in that the tensioning device and the welding device are driven by the same pneumatic motor (8). The direction of rotation of the pneumatic motor can be inverted, the pneumatic motor being connected to the devices by two freewheeling mechanisms releasing the devices in opposite directions. In order to keep power consumption for evacuating non-operational air low, in a particularly preferred embodiment, switching valves which automatically discharge the non-operational air to the exterior are integrated into the air intake ducts that are used as evacuation ducts for the non-operational air when the direction of rotation is inverted.
The invention relates to a tightening strap device for a heat-weldable plastic strip (4) that is used to strap a packaged item (5) and that is joined at a welding point to form a loop. Whereas in prior art the plastic strip is held during welding by several clamping elements, in the present invention the welding plate (12) functions simultaneously as a clamping element.
16 - Paper, cardboard and goods made from these materials
Goods & Services
Packing machinery; machines for strapping goods to be
transported; film banderoling machines; machinery using air
for packaging purposes; banderoling machines. Stretch films; Airpad films; plastic materials for packaging
(not included in other classes).
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
22 - Rope, netting, tents, awnings, sails and sacks; padding and stuffing materials
Goods & Services
(1) Machines for strapping goods to be transported; packaging machines that use air for packaging purposes; banderoling machines; stretch films, namely, plastic cling film, extensible, for palletization, plastic film for wrapping; air pad films, namely, plastic bubble packs for wrapping or packaging, sheets of reclaimed cellulose for wrapping, packaging material made of starches; plastic materials for packaging, namely, plastic strapping, plastic bands, extruded plastic strapping, plastic bubble packs for packaging, and plastic bags for packaging.
(2) Machines for strapping goods to be transported; packaging machines that use air for packaging purposes; air pad films, namely, plastic bubble packs for wrapping or packaging, plastic materials for packaging, namely, plastic strapping, plastic bands, extruded plastic strapping, plastic bubble packs for packaging.
