Abstract: A mobile strapping device for strapping packaged goods with wrap-around strap including a tensioner for applying a strap tension to a loop of a wrapping strap, and a friction welder for producing a friction weld connection by way of a friction welding element at two areas of the loop of the wrapping strap disposed one on top of the other, and a chargeable energy storage means for storing electrical energy that can be released as drive energy for motorized drive motions at least for the friction welder for producing a friction weld connection. For a strapping device with high functional reliability and ease of handling, despite the possibility of automated production of wrapped straps, at least to a large extent, the strapping device to includes a planetary gear system for transferring and changing the rotational speed of a drive motion provided by an electrical drive of the friction welder.

Abstract: Disclosed is a mobile strapping device for strapping packaged goods with wrap-around strap, including a tensioner for applying a strap tension to a loop of a wrapping strap, and a friction welder for producing a friction weld connection in two areas of the loop of the wrapping strap disposed one on top of the other, and a chargeable energy storage means for storing energy, in particular electrical, mechanical, elastic or potential energy, that can be released as drive energy at least for the friction welder for producing a friction weld connection. The strapping device is provided with a common drive for the tensioner for producing a tensioning motion, and for the friction welder for producing an oscillating friction welding motion and for a transitioning device for producing a transitioning motion of the friction welder from a rest position to a welding position.

Abstract: A strapping device, in particular a mobile strapping device, for strapping packaged goods with a wrap-around strap, including a tensioner for applying a strap tension to a loop of a wrapping strap. The tensioner includes a rotationally drivable tensioning wheel and a tensioning rocker that pivots relative to the tensioning wheel and cooperates with the tensioning wheel, wherein a tensioning plate is disposed at the tensioning rocker for applying a wrapping strap, and a wherein a distance between the tensioning plate and the tensioning wheel can be varied for applying a tension on the strap, said tensioner also comprising a connector, in particular a welding connector such as a friction welder, for producing a connection in two areas of the loop of the wrapping strap located one on top of the other, is intended to exhibit largely consistent tensioning characteristics even with different strap thicknesses.

Abstract: A mobile strapping device for strapping packaged goods with wrap-around strap, comprising a tensioner for applying a strap tension to a loop of a wrapping strap, and a connector for producing a connection in two areas of the loop of the wrapping strap disposed one on top of the other, and a chargeable energy storage means for storing energy that can be released as drive energy for motorized drive motions at least for the friction welder for producing a friction welded connection and/or for the tensioner, is intended to have high functional reliability and ease of handling despite the possibility of automated production of wrapped straps, at least to a large extent. To this end, it is proposed that the energy storage means of the strapping device comprise a lithium ion battery for providing energy for driving a connector designed as a friction welder.

Abstract: The invention relates to a portable strapping device to strap packaged goods using a strapping band, the device comprising a tightening mechanism for applying tension to a loop of a strapping band, a frictional welding element (5) to generate a friction weld connection of two overlapping strapping-loop segments, and a rechargeable energy-storing device (10) for storing energy, in particular mechanical, elastic or potential energy that may be released as drive energy applied to a frictional welding system (5) to produce a frictional weld connection. One objective of the invention is to attain applicability, in the absence of an electric storage battery, at the highest possible efficiency, to such an above described portable strapping device. This objective is attained in that the energy storage (10) may be loaded using a manually triggered drive component and in that, when energy stored in the storage is released, the energy storage carries out a displacement devoid of any reversal of motion.

Abstract: In a method to seal/lock a strap (44) including a metal strap (44d) which is fitted at least in the zone of seal with a protective layer (44c), the packing strap is laid in the form of a loop around the package and is held, in particular, clamped, in place before and/or during production of the seal. The seal is implemented on the packing strap (44) by resistance welding and the protective layer (44c) of the packing strap (44) shall be pierced before and/or during production of the seal.

Abstract: In a method to seal/lock a strap (44) including a metal strap (44d) which is fitted at least in the zone of seal with a protective layer (44c), the packing strap is laid in the form of a loop around the package and is held, in particular, clamped, in place before and/or during production of the seal. The seal is implemented on the packing strap (44) by resistance welding and the protective layer (44c) of the packing strap (44) shall be pierced before and/or during production of the seal.

Abstract: Using a punching tool for a strapping unit for producing an auxiliary-free connection of ends of a strapping band, the tool having a recess of different widths, in the case of which at least one section of a recess-bounding wall is provided with a rounded portion in the region of at least one change in width, on the one hand, the intention is to make a fixed closure between the band ends possible. On the other hand, the intention is for this tool to be produced as easily and cost-effectively as possible and, in addition, for uniform cutting forces to be made possible. For this purpose, it is proposed that the rounded portion is of circle-arc shape with a certain radius, and that the largest width of the recess is equal to or less than four times the radius of the wall.

Abstract: Using a punching tool for a strapping unit for producing an auxiliary-free connection of ends of a strapping band, the tool having a recess of different widths, in the case of which at least one section of a recess-bounding wall is provided with a rounded portion in the region of at least one change in width, on the one hand, the intention is to make a fixed closure between the band ends possible. On the other hand, the intention is for this tool to be produced as easily and cost-effectively as possible and, in addition, for uniform cutting forces to be made possible. For this purpose, it is proposed that the rounded portion is of circle-arc shape with a certain radius, and that the largest width of the recess is equal to or less than four times the radius of the wall.

Abstract: A manually actuated transportable strapping unit for wrapping a tightening strap around a packaged item (58) which unit includes a base plate (1) which is provided with a supporting surface (1b) for arranging on a packaged item. The unit further includes a sealing device which is provided with a pivotable die-plate carrier (3) which can be pivoted with respect to the base plate (1), about a first bearing point (2), which is provided in the region of a front end (1a) of the base plate (1), from an open end position into a sealing end position and vice versa.

Abstract: A manually actuated transportable strapping unit for wrapping a tightening strap around a packaged item (58) which unit includes a base plate (1) which is provided with a supporting surface (1b) for arranging on a packaged item. The unit further includes a sealing device which is provided with a pivotable die-plate carrier (3) which can be pivoted with respect to the base plate (1), about a first bearing point (2), which is provided in the region of a front end (1a) of the base plate (1), from an open end position into a sealing end position and vice versa.

Abstract: In a strapping apparatus for strapping goods with a band, which apparatus has a tensioning device which is operatively connected to a tensioning drive and is intended for tensioning the band, a welding device for sealing two layers of a band, and a plurality of rewinding locks for fixing the band on the strapping apparatus, highest possible efficiency is to be achieved. The invention proposes providing the welding device with a lever (91), on the one end of which an eccentric (94) which is operatively connected to a motor shaft acts for the purpose of transmitting an eccentric movement, with regard to the motor shaft of the closure device, to the lever (91), and to the other end of which a welding shoe (86) is coupled, the lever (91) being mounted pivotably at a bearing point (90), so that the movement of the eccentric results in an oscillating reciprocating movement of the welding shoe. As a result, it is possible to reduce the power loss occurring in the friction welding operation.

Abstract: In a strapping apparatus for strapping goods with a band, which apparatus has a tensioning device which is operatively connected to a tensioning drive and is intended for tensioning the band, a closure device for sealing two ends of a band, and a plurality of rewinding locks for fixing the band on the strapping apparatus, highest possible efficiency is to be achieved. The invention proposes providing the tensioning device with a rocker (37) arranged opposite a tensioning wheel (30), mounting the rocker (37) pivotably about a rocker axis (38) and designing the tensioning wheel (30) and the rocker (37) in such a way that they can be moved towards each other, as a result of which the band can be clamped between the rocker and the tensioning wheel, and the band rests on the tensioning wheel with a large angle of wrap (&agr;).

Abstract: A strapping apparatus for strapping goods with a band, which apparatus has a tensioning device which is operatively connected to a tensioning drive and is intended for tensioning of the band, a closure device for sealing two ends of a band, and a plurality of rewinding locks for fixing the band on the strapping apparatus, is to be as lightweight as possible while of high functional reliability. It is therefore proposed that an essentially plate-shaped control board (14) which is operatively connected to an actuating means is provided as the means for controlling functions of the strapping apparatus, that a movement of the actuating means brings about a pivoting movement of the control board (14), and that the pivoting movement of the control board can be transmitted to a plurality of transmitting means which are coupled to the control board, with which the rewinding locks (5, 6, 26) can be transferred from a locking position into an insertion position and vice versa.

Abstract: A tensioning and sealing apparatus for strapping an object with a band exhibits a tensioning unit (3) for retaining and tensioning two ends of the band which are to be sealed as well as a sealing unit for connecting the two mutually overlapping ends. The tensioning unit (3) has a motor drive (12) and comprises a tensioning shoe (5) and a drivable tensioning wheel (8) which is fastened on a pivotable rocker (6) and is intended for pressing the band against the tensioning shoe (5) and for gripping the same upon rotation. In order to achieve a high overall efficiency of the tensioning drive, the drive motor (12) of the tensioning wheel (8) is arranged coaxially with the tensioning wheel (8) and is connected to the tensioning wheel (8) via a gear mechanism arranged coaxially with the tensioning wheel (8).