TW202306845A - Strapping tool - Google Patents

Abstract

Various embodiments of the present disclosure provide a strapping tool configured to tension metal strap around a load and, after tensioning, attach overlapping portions of the strap to one another by cutting notches into a seal element positioned around the overlapping portions of the strap and into the overlapping portions of the strap themselves.

Description

Strapping tool

The present disclosure relates to strapping tools, and more particularly, to strapping tools configured to tension a strap around a load and attach overlapping portions of the straps to each other to form a tensioned strap loop around the load.

The battery powered strapping tool is configured to tension a strap around a load and attach overlapping portions of the strap to each other to form a tensioned strap loop around the load. To use one of these strapping tools to form a tension strap loop around a load, the operator first pulls the leading end of the strap from the strap supply, wraps the strap around the load, and places the leading end of the strap under another portion of the strap. The operator then introduces one or more of these overlapping strap sections (depending on the type of strapping tool) into the strapping tool and actuates one or more buttons to initiate: (1) a tensioning loop, during which the assembly is tensioned tensioning the strap around the load; and (2) a sealing loop after the tensioning loop is complete, during which the sealing assembly attaches overlapping strap portions to each other (thus forming a tensioning strap loop around the load) and during which the cutting assembly will The straps are cut from the strap supply.

The way the strapping tool attaches the overlapping strap portions to each other during the sealing loop depends on the type of strapping tool and the type of strap. Some strapping tools configured for plastic tape, such as polypropylene or polyester tape, include friction welders, heated blades, or ultrasonic welders configured to attach overlapping portions of the tape to each other. Some strapping tools configured for use with plastic or metal straps, such as steel straps, include jaws that mechanically deform a sealing element (known in the strapping industry as a "compression" element) positioned around the overlapping portion of the straps. ") or have notches cut into them (referred to as "notches" in the strapping industry) to attach the overlapping parts to each other. Other strapping tools configured for metal strapping include punches and dies configured to form a set of mechanically interlocking cuts in overlapping portions of strapping to attach the overlapping portions to each other (in strapping). known in the industry as a "sealless" attachment).

Various embodiments of the present disclosure provide a strapping tool that is configured to tension a metal strap around a load and, after tensioning, provide Notches are cut into the overlapping portions themselves to attach the overlapping portions of the strap to each other.

While the systems, devices, and methods described herein may be embodied in various forms, the drawings illustrate and this specification describes certain exemplary and non-limiting embodiments. Not all of the components shown in the drawings and described in this specification are required, and certain embodiments may include additional, different, or fewer elements. Changes may be made in the configuration and type of components, the shape, size and material of components, and the connection method of components without departing from the spirit or scope of the claims. Unless otherwise indicated, any orientation mentioned in this specification reflects the orientation of the components shown in the corresponding drawings and does not limit the scope of the disclosure. Furthermore, terms related to mounting methods, such as mounting, connecting, etc., are not intended to be limited to direct mounting methods, but should be broadly construed to include indirect and operative mounting, connecting, and similar mounting methods. It is intended that this specification be considered as a whole and interpreted in accordance with the principles of the present disclosure and as understood by those skilled in the art.

Figures 1A-3C illustrate an exemplary embodiment of a strapping tool 50 of the present disclosure (for brevity, sometimes referred to in the embodiments as a "tool") and certain assemblies and components thereof. Strapping tool 50 is configured to implement a strapping loop, which includes: (1) a tensioning loop, during which the strapping tool tensions a strap (metal strap in this exemplary embodiment) around a load; and (2) a sealing loop, during which after the strap is tensioned, the strapping tool cuts a notch (referred to in the strapping industry and in this embodiment as a "notch") into the sealing element positioned around the strap overlap and into the strap overlap itself. to attach the overlapping portions of the straps to each other and cut the straps from the strap supply.

Strapping tool 50 includes housing 100 (Fig. 1A and Fig. 1B), working assembly 200 (Fig. 3A-Fig. 3C), display assembly 1300 (Fig. 1A-Fig. 2), actuating assembly 1400 ( 1A-2), a power supply (not shown), a controller 1600 (FIG. 2), and one or more sensors 1700 (FIG. 2).

Housing 100 (best shown in FIGS. 1A and 1B ) is formed from a plurality of components (not individually labeled) that collectively at least partially surround and/or support some (or All) other assemblies and components. In the exemplary embodiment, housing 100 includes: a front housing portion at least partially surrounding and/or supporting at least some components of working assembly 200, display assembly 1300, and actuation assembly 1400; a rear housing part, the rear housing part defines the receptacle 190, which is sized, shaped or otherwise configured to receive and at least partially surround and/or support the power supply and controller 1600; and the connector housing part, the The connector housing portion extends between and connects the bottoms of the front housing portion and the rear housing portion, and defines a handle 150 . This is just one example, and in other embodiments, elements of the strapping tool may be supported and/or surrounded by any suitable portion of the housing 100 . Housing 100 may be formed from any suitable number of elements joined together in any suitable manner. In the exemplary embodiment, housing 100 is formed of plastic, but in other embodiments it may be made of any other suitable material.

Working assembly 200 (best shown in FIGS. 3A-3C ) includes most of the elements of strapping tool 50 configured to implement strapping loops to tension the strap around the load, The overlapping portions of the straps are attached to each other, and the straps are cut from the strap supply. Specifically, the working assembly 200 includes a support 300 , a tensioning assembly 400 , a sealing assembly 500 , a driving assembly 700 including a conversion assembly 800 , a trigger assembly 900 , and a decoupling assembly 1900 .

Support 300 (best shown in FIGS. 3A-3C ) serves as a direct link for tensioner assembly 400, seal assembly 500, drive assembly 700, trigger assembly 900, and decoupling assembly 1900. or indirect public mounts. The support member 300 includes a main body 310 , a foot 320 extending laterally from the bottom of the main body 310 , a tensioner assembly mounting element 330 extending rearwardly from the main body 310 , and a drive conversion assembly mounting element 340 extending upward from the main body 310 . The roller 380 is connected to the foot 320 and is freely rotatable relative to the foot.

Tensioning assembly 400 (best shown in FIGS. 4A-4D ) is configured to tension the belt around a load in a tensioning loop. The tensioning assembly 400 includes a tensioning assembly support 410, a tensioning assembly gear 420, a tensioning wheel 440 driven by the tensioning assembly gear 420, and one or more covers (not shown). One or more covers are mounted to tensioner assembly support 410 to partially or completely surround certain elements of tensioner assembly gearing 420 and tensioner pulley 440 .

Tensioner assembly gear device 420 includes: driven gear 421; first sun gear 422; first planetary gears 423a, 423b and 423c; carrier 424; first ring gear 425; bearing bush 426; second ring gear 427 ; tensioner mount 428; second planetary gears 429a, 429b, and 429c; and key 420k. The elements of tensioner assembly gearing 420 (except key 420k) are centered on idler axis of rotation 440a and some of these elements are rotatable about the idler axis of rotation. The carrier 424 includes a first planetary gear carrier 424a to which the first planetary gears 423a-423c are rotatably mounted (such as via respective bearings and mounting pins), and a second sun gear 424b which is rotatably mounted thereto. The planet gear carrier 424a rotates about (and is here integrally formed with) an idler rotation axis 440a. The first ring gear 425 includes internal teeth 425it and external teeth 425ot. The second ring gear 427 includes internal teeth 427it. The idler mount 428 includes a second planetary gear carrier 428a and an idler shaft 428b that is rotatable with the second planetary gear carrier 428a about an idler rotation axis 440a (and is here integrally formed with the second planetary gear carrier ). The second planet gears 429a-429c are rotatably mounted to the second planet gear carrier 428a (such as via respective bearings and mounting pins). Tensioner shaft 428b defines an opening (not labeled) sized to receive key 420k.

The first sun gear 422 is fixedly mounted to the driven gear 421 (such as via a splined connection) such that the driven gear and the first sun gear rotate together about the tensioner axis 440a. The first sun gear 422 is in meshing and driving engagement with the first planetary gears 423a-423c. The first planetary gears mesh with internal teeth 425it of the first ring gear 425 . The second planetary gear meshes with the internal teeth 427it of the second ring gear 427 . The bearing bush 426 rotatably supports the first ring gear 425 and separates it from the driven gear 421 . The second sun gear 424b is in meshing and driving engagement with the second planetary gears 429a-429c. The tensioning wheel 440 is fixedly mounted to the tensioning wheel shaft 428b via a keyed connection with the key 420k such that the tensioning wheel shaft and the tensioning wheel together rotate about the tensioning wheel axis of rotation 440a. Specifically, the tensioning wheel 440 defines a slot sized to receive the key 420k when pressed onto the tensioning wheel shaft 428b.

Tensioner assembly gear 420 is mounted to tensioner assembly support 410 . The second ring gear 427 is rotationally fixed relative to the tensioning assembly support 410 about the tensioning wheel axis of rotation 440a (i.e., the second ring gear 427 is non-rotatable relative to the tensioning assembly support 410 about the tensioning wheel axis of rotation 440a ). In the exemplary embodiment, a pin (shown but not labeled) is positioned between second ring gear 427 and tensioner assembly support 410 to prevent relative rotation, but any suitable element such as a set screw, glue or High friction components or fasteners) can also be used for this. The decoupling assembly 1900 (except when actuated, as described below) rotationally fixes the first ring gear 425 relative to the tensioning assembly support 410 about the tensioning wheel axis of rotation 440a (such that the first ring gear cannot The support member 410 of the tensioning assembly rotates around the tensioning wheel rotation axis 440a).

During the tensioning loop, the drive assembly 700 drives the driven gear 421, as described below. The driven gear 421 begins to rotate itself and the first sun gear 422 about the tensioning wheel rotation axis 440a in the tensioning rotation direction (clockwise from the perspective of FIG. 4B in this exemplary embodiment). The first sun gear 422 drives the first set of planetary gears 423a-423c. Since decoupling assembly 1900 prevents rotation of first ring gear 425 about idler axis of rotation 440a, rotation of planetary gears 423a-423c causes carrier 424 (including second sun gear 424b) to be tensioned about idler axis of rotation 440a. The direction of rotation is rotated. The second sun gear 424b drives the second set of planetary gears 429a-429c. Since the second ring gear 427 cannot rotate about the idler axis of rotation 440a, rotation of the planetary gears 429a-429c causes the idler mount 428 and the idler 440 mounted thereto to be tensioned about the idler axis of rotation 440a. The direction of rotation is rotated. Accordingly, tensioning assembly gearing 420 operatively connects drive assembly 700 to tensioning wheel 440 to rotate tensioning wheel 440 about tensioning wheel axis of rotation 440a in a tensioning rotational direction.

Tensioning assembly 400 is movably mounted to tensioning assembly mounting element 330 of support 300 and is configured to be relative to support 300 (and in particular, under the control of trigger assembly 900 (described below) is relative to the foot 320 of the support 300) and about the tensioning assembly pivot axis 405a of the tensioning assembly pivot axis 405 in the strap tensioning position (FIGS. 7A and 7B) and the strap insertion position (FIGS. 7C Figure) to pivot. When the tensioning assembly 400 is in the strap tensioning position, the tensioning wheel 440 is adjacent to (and in this embodiment is not connected to) the roller 380 of the support 300 (or the top surface of the strap if the strap has been inserted into the strapping tool 50). touch). When the tensioning assembly 400 is in the strap insertion position, the tensioning pulley 440 is spaced apart from the roller 380 to enable the top portion of the strap (described below) to be inserted between the tensioning pulley 440 and the roller 380 . Tensioner assembly biasing element 400s (FIG. 3B) (in this exemplary embodiment a torsion spring, but could be any other suitable type of biasing element) biases tensioner assembly 400 into the strap tensioned position .

The decoupling assembly 1900 (best shown in FIGS. 5A-5D ) is configured to enable the tensioning wheel 440 to rotate about the tensioning wheel axis 440a in the direction of tensioning rotation after the tensioning process is complete. Rotate in the opposite direction to release tension to facilitate removal of the tool 50 from the strap. Decoupling assembly 1900 includes decoupling assembly shaft 1910 , decoupling assembly housing 1920 , first engageable element 1930 , expandable element 1940 and second engageable element 1950 .

The decoupling assembly shaft 1910 includes a body 1912 including a first end 1912a having an irregular cross-section and a second end 1912b having teeth. The first bearing support 1914 extends from the first end 1912a, and the second bearing support 1916 extends from the second end 1912b. The decoupling assembly housing 1920 includes a tubular body 1922 having teeth 1924 extending around its periphery. Body 1922 defines an opening therethrough. The first engageable element 1930 comprises a tubular sleeve having a cylindrical outer surface and an inner surface with a perimeter matching the perimeter of the first end 1912a of the main body 1912 of the decoupling assembly shaft 1910 . The expandable element 1940 includes a torsion spring having a first end 1940a and a second end 1940b. The second engageable element 1950 includes a tubular body 1952 and an annular flange 1954 at one end of the body 1952 . An opening 1954o is defined through flange 1954 .

The first engagement element 1930 is mounted on the first end 1912a of the main body 1912 of the decoupling assembly shaft 1910 for rotation therewith, and is disposed within the main body 1922 of the decoupling assembly housing 1920 . The second engageable element 1950 is also disposed within the body 1922 of the decoupling assembly housing 1920 such that the body 1952 of the second engageable element 1950 is adjacent to the first engageable element 1930 and such that at least A portion extends through the second engageable element 1950 . An expandable member 1940 , which in the exemplary embodiment is a torsion spring, is disposed within body 1922 of decoupling assembly housing 1920 and circumscribes body 1952 of first engageable member 1930 and second engageable member 1950 . The outer diameter of the first engageable element 1930 and the outer diameter of the body 1952 of the second engageable element are substantially the same and equal to or greater than the rest inner diameter of the torsion spring 1940 . This means that the torsion spring 1940 exerts a compressive force on the body 1952 of the first engagement element 1930 and the second engagement element, thereby preventing those components (and the decoupling assembly shaft 1910 ) from rotating relative to each other. First end 1940a of expandable member 1940 is received in opening 1954o defined through flange 1954 of second engageable member 1950, and second end 1940b of expandable member 1940 is received in opening 1954o defined in decoupling assembly housing. In the opening 1922o in the main body 1922 of 1920. Bearings (not shown) are respectively mounted on the first bearing support 1914 and the second bearing support 1916 of the decoupling assembly shaft 1910 .

As best shown in FIGS. 3B , 5D and 7A-9C , decoupling assembly 1900 is mounted to tensioner assembly support 410 and is operatively connected to tensioner assembly gearing 420 . More specifically, decoupling assembly 1900 is mounted to tensioning assembly support 410 via fasteners (not labeled) that rotationally secure second engageable element 1950 relative to tensioning assembly support 410 such that The second engageable element 1950 (and the first end 1940a of the first expandable element 1940 received in the opening 1954o of the flange 1954 of the second engageable element 1950 ) cannot rotate relative to the tensioning assembly support 410 . As shown in Figure 5D, intermediate gears 1990a and 1990b (here spur gears mounted to (and freely rotatable relative to) tensioner assembly support 410) operatively connect body 1912 to the tensioner assembly The first ring gear 425 of the gear device 420 . Specifically, the teeth on the second end 1912b of the main body 1912 of the uncoupling assembly shaft 1910 are engaged with the first gear 1990a, the first gear is engaged with the second gear 1990b, and the second gear is engaged with the tensioning assembly 400. The outer teeth 425ot of the first ring gear 425 of the assembly gear unit 420 are engaged. Since main body 1952 is rotationally fixed relative to tensioner assembly support 410, and decoupling assembly shaft 1910 is rotationally fixed with first engageable element 1930, decoupling assembly shaft 1910 (and thus intermediate gears 1990a and 1990b) are rotationally fixed relative to tensioner assembly support 410. The tight assembly housing 410 is fixed for rotation. Since the intermediate gear 1990b meshes with the outer teeth 425ot of the first ring gear 425 of the tensioner assembly gearing 420, the decoupling assembly 1900 prevents the first ring gear 425 from rotating about the tensioner rotation axis 440a.

The decoupling assembly 1900 can be actuated (such as by the trigger assembly 900 as described below) to release the connection between the torsion spring 1940 and the first engageable element 1930 such that the first engageable element 1930 and the first engageable element 1930 are decoupled. Assembly shaft 1910 is rotatable relative to second engageable element 1930 . As explained above, the second engageable element 1950 and the first end 1940a of the expandable element 1940 (which is received in the opening 1954o of the flange 1954 of the second engageable element 1950) rotate relative to the tensioner assembly support 410 fixed. To remove the connection between torsion spring 1940 and first engageable element 1930, decoupling assembly housing 1920 is rotated relative to tensioner assembly support 410, first end 1940a of torsion spring 1940, and second engageable element 1950 . Second end 1940 b of torsion spring 1940 received in opening 1922 o defined in body 1922 of decoupling assembly housing 1920 rotates with decoupling assembly housing 1920 . When this happens, the inner diameter of the torsion spring 1940 near its second end 1940b begins to expand, and eventually expands enough (thereby reducing the compressive force or eliminating it completely) that the first engageable element 1930 and the The coupling assembly shaft 1910 is rotatable relative to the second engageable element 1950 (and torsion spring 1940).

When the tensioning loop is complete, the tensioning pulley 440 maintains a significant amount of tension in the belt, and the belt exerts a reactive force (or torque) against the tensioning pulley 440 in a direction opposite to the tensioning direction. Actuation of the decoupling assembly 1900 enables the tensioning wheel 440 to rotate in a direction opposite to the tensioning direction to release the tension in a controlled manner. Specifically, after the tensioning loop is complete, decoupling assembly shaft 1910 (via intermediate gears 1990a and 1990b) continues to prevent first ring gear 425 of tensioning assembly gear 420 from rotating about tensioning wheel rotation axis 440, which The tensioning wheel 440 is prevented from rotating in a direction opposite to the tensioning direction. As decoupling assembly housing 1920 is rotated (such as via actuation of trigger assembly 900 as described below), the inner diameter of torsion spring 1940 near its second end 1940b begins to expand. Eventually, the force exerted by the first ring gear 425 on the decoupling assembly shaft 1910 exceeds the compressive force exerted by the torsion spring 1940 on the first engageable element 1930 . When this occurs, the first ring gear 425 rotates about the tensioning wheel rotation axis 440a in a direction opposite to the tensioning direction. Since the first sun gear 422 is rotationally fixed (by the drive assembly 700 ), this causes the first planet gears 423a-423c to rotate about the tensioner rotation axis 440a in a direction opposite to the tensioning direction. This (as explained above) causes the tensioning wheel 440 to rotate about the tensioning wheel axis of rotation 440a in a direction opposite to the tensioning direction.

In other embodiments, only one or more than two intermediate gears may operably connect the decoupling assembly shaft to the first ring gear. In a still further embodiment, the second end of the main body of the decoupling assembly shaft engages directly with the outer teeth of the first ring gear (rather than via one or more intermediate gears).

Trigger assembly 900 (best shown in FIGS. 6A-9C ) is operatively connected to: (1) tensioning assembly 400 and is configured to position tensioning assembly 400 relative to the support 300 moves from a strap tensioning position to a strap insertion position; and (2) an uncoupling assembly 1900 and is configured to actuate the uncoupling assembly so that the tensioning wheel 440 can rotate in a direction opposite to the tensioning direction direction rotation. Trigger assembly 900 includes trigger 910, trigger pivot pin 910p1, trigger travel pin 910p2, trigger gear engagement pin 910p3, trigger biasing element 910s, trigger gear 930, and trigger gear biasing element 930s.

The trigger 910 includes a trigger body 912, a trigger head 914, and a blocking foot 916. The trigger head extends from the trigger body 912 and defines a travel pin slot 914s (shown in FIGS. 9A-9C ), blocking The feet extend downwardly from the trigger body 912 . The trigger gear 930 includes a trigger gear mounting head 932 defining a stop surface 932a, a trigger gear arm 934 extending from the trigger gear mounting head 932, and a trigger gear foot 936 connected to the trigger gear arm 934 and includes trigger gear teeth 936t.

Trigger pivot pin 910p1 and trigger travel pin 910p2 attach trigger 910 to tensioning assembly 400 such that trigger 910 can be in a home position relative to tensioning assembly 400 (FIGS. 7A, 8A, and Fig. 9A) and intermediate positions (Fig. 7B, Fig. 8B and Fig. 9B). Specifically, trigger pivot pin 910p1 extends through an opening (not shown) defined through tensioner assembly support 410 and trigger head 914 of trigger 910 such that trigger 910 may surround trigger pivot pin 910p1 (which defines a trigger pivot axis (not shown)) and pivots relative to tensioner assembly 400 and decoupling assembly 1900 . Trigger trip pin 910p2 extends through an opening (not shown) defined through tensioner assembly support 410 and through trip pin slot 914s of trigger head 914 .

As trigger 910 pivots about trigger pivot pin 910p1 (and trigger pivot axis) and relative to tensioner assembly 400 and support 300, travel pin slot 914s relative to trigger travel pin 910p2 (which is mounted to Tensioning assembly support 410) moves. The size, shape, location and orientation of trip pin slot 914s constrains the pivotal movement of trigger 910 about trigger pivot pin 910p1 between a home position and an intermediate position. As shown in FIG. 9A, when the trigger 910 is in its home position, the trigger travel pin 910p2 is positioned at and engages the upper end (not shown) of the travel pin slot 914s, thereby preventing the trigger 910 from moving relative to the tensioner. Assembly 400 is further rotated in a clockwise direction. Conversely, and as shown in FIG. 9B, when the trigger 910 is in its intermediate position, the trigger travel pin 910p2 is positioned at the lower end (not shown) of the travel pin slot 914s, thereby preventing the trigger 910 from tensioning relative to the Assembly 400 is further rotated in a counterclockwise direction. A trigger biasing element 910s (in the exemplary embodiment a torsion spring, but could be any other suitable element) biases the trigger to its home position. When the trigger 910 is in its home position, the blocking foot 916 engages the tensioning assembly 400 to prevent further clockwise rotation of the trigger 910 and maintain the trigger 910 in its home position.

As best shown in Figure 6A, trigger gear mounting head 932 mounts to travel pin 91 Op2. Trigger gear biasing element 930s biases (via engagement with pin 930p ) stop surface 932a of trigger gear mounting head 932 into contact with trigger gear engaging pin 910p3 (which is fixedly attached to trigger 910 ). Thus, the trigger gear 930 can rotate about the travel pin 910p2 when the trigger is rotated between its home position and the neutral position. That is, trigger 910 is operably connected to trigger gear 930 and is configured to rotate trigger gear 930 about trigger travel pin 910b as trigger 910 pivots from its starting position to its intermediate position. . As trigger gear 930 rotates, it actuates decoupling assembly 1900, as described above. More specifically, as trigger gear 930 rotates, its teeth 936t engage teeth 1924 of body 1922 of decoupling assembly housing 1920, thereby forcing decoupling assembly housing 1920 to rotate (thereby actuating decoupling assembly 1900).

As explained above and as shown in FIG. 9B, once the trigger 910 reaches its intermediate position, the trigger travel pin 910p2 is positioned at the lower end of the travel pin slot 914s, thereby preventing the trigger 910 from moving in the reverse direction relative to the tensioner assembly 400. Rotate further in the clockwise direction. At this point, if the tensioning assembly 400 is in its strap tensioning position, as shown in Figure 7B, continued application of force to the trigger 910 toward the handle 150 causes the trigger 910 and tensioning assembly 400 to pivot around the tensioning assembly together. The axis of rotation 405a rotates until the trigger 910 reaches the actuated position and the tensioning assembly 400 reaches its strap insertion position. Figure 7C shows the trigger 910 in the actuated position and the tensioner assembly 400 in the strap insertion position.

The sealing assembly 500 (best shown in FIGS. 3A, 10A, and 10B) is configured to, during the sealing loop, by opposing the sealing element positioned around the overlapping portion of the belt and the overlap of the belt The sections themselves are notched to attach the overlapping portions of the straps to each other to form tension strap loops around the load. The sealing assembly 500 includes a front cover (not shown), a rear cover (not shown), and a jaw assembly 520 partially enclosed between the front cover and the rear cover. The rear cover is mounted to the support 300 (not shown).

Jaw assembly 520 includes coupler 522, coupler pivot 524, first coupler/jaw link 526 and second coupler/jaw link 528, first jaw 536, second jaw 538, A first jaw connector 550, a second jaw connector (not shown), a first link pin 540a and a second link pin 540b, and a first pivot pin 560a and a second pivot pin 560b. The first jaw 536 and the second jaw 538 form a pair of opposing jaws. First coupler/jaw link 526 and second coupler/jaw link 528 are each pivotally connected to coupler 522 near their respective upper ends via coupler pivot 524 . This pivotable connection enables the first coupler/jaw link 526 and the second coupler/jaw link 528 to be about the longitudinal axis of the coupler pivot 524 relative to the coupler 522 and the coupler pivot 524 (not shown). shown) pivot. Here, the coupler pivot 524 comprises a pivot pin retained via a retaining ring (not shown), although in other embodiments it could be any other suitable pivot. The rear end of the coupler pivot 524 is positioned in a slot (not labeled) defined in the rear cover, so the slot constrains the coupler pivot 524 to vertical movement between the upper and lower positions.

Respective upper portions of each of first jaw 536 and second jaw 538 are pivotally connected to respective lower ends of coupler/jaw links 526 and 528 via link pins 540a and 540b, respectively. These pivotable connections enable the jaws to pivot about their respective longitudinal axes (not shown) relative to the coupler/jaw links. The respective lower portions of each of the first jaw 536 and the second jaw 538 are pivotally connected to the first jaw connector 550 and the second jaw connector by pivot pins 560a and 560b. The pivotable connection enables the jaws to pivot relative to the jaw connector about their respective longitudinal axes (not shown) between respective home positions (Fig. 10A) and sealing positions (Fig. 10B). Each jaw 536 and 538 has lower teeth 536a and 538a which force the sealing element against the jaw connector and cut notches in the overlapping portion of the sealing element and strap during the sealing loop (described below).

Although not shown here, the cutter is positioned and movable within a recess defined in the back cover, and is mounted to the coupler pivot 524 . Downward movement of the coupler pivot 524 causes the coupler pivot 524 to force the cutter down to cut the strap off the strap supply, and movement of the coupler pivot 524 back and up causes the cutter to move back and up.

Drive assembly 700 (best shown in Figure 3C) is operatively connected to tensioning assembly 400 and configured to rotate tensioning pulley 440 to tension the belt, and is operably connected to sealing assembly 500 to attach the overlapping portions of the straps to each other. The drive assembly 700 includes a working assembly actuator 710 , a first transmission 720 , a second transmission 730 , a first belt 740 , a third transmission 750 , a second belt 760 and a transfer assembly 800 .

In the exemplary embodiment, the working assembly actuator 710 includes a motor (and is referred to herein as the motor 710), and in particular a brushless DC motor including a motor output shaft 712 having a motor output shaft rotational axis (though In other embodiments, motor 710 may be any other suitable type of motor). Motor 710 (via motor output shaft 712) is operatively connected to first transmission 720 and is configured to drive the first transmission, which (described below) is configured to select the output of motor 710 Sexually transmitted to tensioning assembly 400 or sealing assembly 500. In other embodiments, the strapping tool includes separate tensioning and sealing actuators configured to actuate the tensioning and sealing assemblies, respectively, rather than a single actuator configured to actuate both. actuator.

The first transmission 720 includes any suitable gearing and/or is configured to selectively transmit the output of the motor 710 to the second transmission 730 via the first belt 740 and to the second transmission 730 via the second belt 760. Other components of the third transmission device 750 . More specifically, the first transmission 720 is configured such that: (1) rotation of the motor output shaft 712 in the first rotational direction causes the first transmission 720 to transmit the output of the motor 710 to the second transmission via the first belt 740 730 instead of the third transmission 750; and (2) rotation of the motor output shaft 712 in a second rotational direction opposite to the first rotational direction causes the first transmission 720 to transmit the output of the motor 710 to the second belt 760 via the second belt 760 Three transmissions 750 instead of the second transmission 730 . Thus, in this embodiment, a single motor (motor 710 ) is configured to actuate both tensioning assembly 400 and sealing assembly 500 .

To achieve this selective transfer of motor output, the first transmission 720 includes a first pulley 714a (or other suitable element) mounted on a first flywheel (not shown) and a second pulley (not shown) ) on the second pulley 714b (or other suitable components), the first flywheel is installed on the motor output shaft 712, and the second flywheel is installed on the motor output shaft 712. The first pulley 714a is operatively connected to the second transmission 730 (via the first belt 740 ), and the second pulley 714b is operatively connected to the third transmission 750 (via the second belt 760 ). When the motor output shaft 712 rotates in the first direction: (1) the first flywheel and the first pulley 714a rotate with the motor output shaft 712, thereby transmitting the motor output to the second transmission 730 via the first belt 740, and (2) ) The motor output shaft 712 is free to rotate through the second flywheel, which does not rotate the second pulley 714b. Conversely, when the motor output shaft 712 rotates in the second direction: (1) the second flywheel and the second pulley 714b rotate with the motor output shaft 712, thereby transmitting the motor output to the third transmission device 750 via the second belt 760, And (2) the motor output shaft 712 is free to rotate through the first flywheel, which does not rotate the first pulley 714a. This is only one exemplary embodiment of the first transmission 720 and in other embodiments it may include any other suitable components.

Anti-rotation gear 790 is mounted to a flywheel (not shown), which in turn is rotatably mounted to support 300 adjacent second belt 760 such that second belt 760 drivingly engages anti-rotation gear 790 . The flywheel is configured such that the anti-rotation gear 790 is free to rotate in the second direction of rotation (clockwise from the perspective shown in FIG. 3C ), and not in the first direction of rotation (clockwise from the perspective shown in FIG. 3C ). Anticlockwise rotation. Thus, when the motor output shaft 712 rotates in the second rotational direction, the second belt 760 drives the anti-rotation gear 790 to rotate as it transmits the output of the motor output shaft 712 to the third transmission 750 . Because the anti-rotation gear 790 cannot rotate in the first rotational direction and is engaged with the second belt 760 , the anti-rotation gear 790 prevents the second belt 760 from rotating when the motor output shaft 712 rotates in the first rotational direction.

The second transmission 730 is configured to transmit the output of the first transmission 720 to the tensioning assembly 400 to cause the tensioning pulley 440 to rotate. More specifically, second transmission 730 is configured to transmit the output of first transmission 720 to tensioner assembly gear 420 of tensioner assembly 400 such that tensioner shaft 428b and the tensioner pulley thereon 440 spins. Accordingly, the motor 710 is operatively coupled to the tensioning pulley 440 (via the first transmission 720, the first belt 740, the second transmission 730, the tensioning assembly gear 420, and the tensioning pulley shaft 428b), and is configured to to rotate the tensioning wheel 440. In the exemplary embodiment, second transmission 730 includes an intermediate gear arrangement (not shown) rotatably mounted (via bearings or any other suitable assembly) to tensioner assembly pivot shaft 405 and Rotatable about tensioner assembly pivot axis 405a such that the output of motor 710 is transmitted to tensioner assembly gearing 420 to rotate tensioner wheel 440 . The position of the intermediate gearing is such that the operative connection between the motor 710 and the tensioning assembly 400 is maintained as the tensioning assembly 400 pivots between its strap tensioning and strap insertion positions.

The third transmission 750 is configured to transmit the output of the first transmission 720 to the conversion assembly 800 . The third transmission 750 may include any suitable components, such as one or more gears and one or more shafts, arranged in any suitable manner. The transition assembly 800 is configured to transmit the output of the third transmission 750 to the seal assembly 500 to implement a seal loop including the jaws that cause the seal assembly to move from their initial positions to their the sealing position to cut notches in the sealing elements and straps, and then return to their original positions to release the notched sealing elements and straps. In doing so, in this embodiment, the conversion assembly 800 is configured to convert rotational motion (rotation of shafts and gears) to linear motion (reciprocating translational movement of the coupling).

More specifically, rotation of the motor output shaft 712 of the motor 710 in the second rotational direction results in rotation of the second pulley 714b of the first transmission 720 . The second belt 760 transmits the output of the first transmission 720 (in this example the rotation of the second pulley 714b) to the third transmission 750, which in turn transmits the output of the first transmission 720 to the switching assembly. Into 800.

The display assembly 1300 includes a suitable display screen 1310 with a touch panel 1320 . Display screen 1310 is configured to display information about the strapping tool (at least in this embodiment), and touch panel 1320 is configured to receive operator input, such as desired strap tension, desired weld cooldown time, and so on. Similar inputs are known in the art. A display controller (not shown) may control display screen 1310 and touch panel 1320 and, in these embodiments, is communicatively coupled to controller 1300 to send and receive signals to and from controller 1300 . Other embodiments of the strapping tool do not include a touch panel. Still other embodiments of the strapping tool do not include a display assembly.

The actuation assembly 1400 is configured to receive operator input to initiate the operation of tensioning and sealing the loops. In this exemplary embodiment, the actuating assembly 1400 includes a first push button actuator 1410 and a second push button actuator 1420, which initiate a tensioning loop and a sealing loop according to the mode of operation of the strapping tool 50, as described below. Other embodiments of strapping tool 50 do not have actuation assembly 1400 but incorporate their functionality into display assembly 1300 . For example, in one of these embodiments, two areas of the touch panel define a virtual button that has the same functionality as a mechanical push button actuator.

Controller 1600 includes one or more processing devices communicatively coupled to one or more memory devices. For example, the controller can be a programmable logic controller. The processing means may comprise any suitable processing means such as, but not limited to, a general purpose processor, a special purpose processor, a digital signal processor, one or more microprocessors, one or more microprocessors associated with a digital signal processor core device, one or more application specific integrated circuits, one or more field programmable gate array circuits, one or more integrated circuits, and/or state machines. The memory device may include any suitable memory device, such as, but not limited to, read-only memory, random access memory, one or more digital registers, cache memory, one or more semiconductor memory devices, Magnetic media such as integrated hard disk and/or removable memory, magneto-optical media, and/or optical media. The memory device stores instructions executable by the processing device to control the operation of the strapping tool 50 . Controller 1600 is communicatively and operably connected to motor 710, display assembly 1300, actuation assembly 1400, and sensor 1700, and is configured to receive signals from, and control these components. The controller 1600 can also be communicatively connected (such as via Wi-Fi, Bluetooth, near field communication, or other suitable wireless communication protocol) to an external device, such as a computing device, to send information to and receive information from the external device .

The controller 1600 is configured to operate the strapping tool in one of three modes of operation: (1) a manual mode of operation; (2) a semi-automatic mode of operation; and (3) an automatic mode of operation. In the manual mode of operation, the controller 1600 operates the motor 710 to cause the tensioning wheel 440 to rotate in response to actuating the first push button actuator 1410 and maintaining it in its actuated state. The controller 1600 operates the motor 710 in response to actuating the second push button actuator 1420 to cause the sealing assembly 500 to implement a sealing loop. In the semi-automatic mode of operation, the controller 1600 operates the motor 710 to cause the tensioning wheel 440 to rotate in response to actuating the first push button actuator 1410 and maintaining it in its actuated state. Once the controller 1600 determines that the tension in the webbing has reached the (pre-set) desired webbing tension, the controller 1600 automatically operates the motor to cause the sealing assembly 500 to perform a sealing loop (without additional input from the operator). In the automatic mode of operation, the controller 1600 operates the motor 710 in response to actuating the first push button actuator 1410 to cause the tensioning wheel 440 to rotate. Once the controller 1600 determines that the tension in the webbing has reached the (pre-set) desired webbing tension, the controller 1600 automatically operates the motor to cause the sealing assembly 500 to perform a sealing loop (without additional input from the operator).

The power supply is electrically connected (via suitable wiring and other components) to several elements of the strapping tool 50, including the motor 710, the display assembly 1300, the actuation assembly 1400, the controller 1600, and the one or more sensors 1700, and via configuration to power these components. In this exemplary embodiment, the power source is a rechargeable battery such as a lithium-ion or nickel-cadmium battery, although in other embodiments it could be any other suitable power source. The power supply is sized, shaped and otherwise configured to be received in a receptacle 190 defined by the housing 100 . Strapping tool 50 includes one or more battery retainers (not shown) to releasably secure the power supply in place when received in the receptacle. Actuation of the strapping tool 50 or the power supply unlocks the power supply from the housing 100 and enables an operator to remove the power supply from the housing 100 .

The following describes the use of strapping tool 50 to implement strapping loops, which include: (1) tensioning loops, in which strapping tool 50 tensions strap S around load L; and (2) sealing loops, in which strapping tools 50 are positioned in pairs Cuts are made in the sealing element SE around the overlapping top and bottom parts of the strap S and in the top and bottom parts of the strap itself, and the strap is cut off from the strap supply. Initially, tensioner assembly 400 is in its belt tensioned position, jaws 536 and 538 of seal assembly 500 are in their respective home positions, and trigger 910 is in its home position. For the purposes of this example, the strapping tool 50 is in automatic mode.

The operator first pulls the front end of the strap S with a sub-supply device (not shown) and passes the front end of the strap S through the sealing element SE. While holding the sealing element SE, the operator wraps the strap around the load L and positions the leading end of the strap S under another portion of the strap S and again passes the leading end of the strap S through the sealing element SE. Thereafter, the sealing element SE is positioned around the overlapping top and bottom portions of the strap S. The operator then bends the front end of the strap S backwards and slides the sealing element SE along the strap S until it reaches the bend. Fig. 11 shows the positions of the bent portion and the sealing element SE at this time.

The operator then pulls the trigger 910 from its home position to its actuated position to move the tensioning assembly 400 from its strap tensioning position to its strap insertion position. While keeping the trigger 910 in its actuated position, the operator introduces the top portion of the strap S behind the sealing element SE into the strap receiving opening so that the top portion of the strap S is at the foot of the tensioning pulley 440 and the support 300 Between the rollers 380 of the part 320. The operator then manually pulls the strap S to remove the slack and pushes the strapping tool 50 towards the sealing element SE until the sealing element SE is positioned between the jaws 536 , 538 . At this time, the bottom portion of the strap S is under the foot portion 320 .

The operator then releases the trigger 910 . This causes the tensioning assembly biasing element 400s to force the tensioning assembly 400 back to its strap tensioning position, which causes the tensioning wheel 440 to engage the top portion of the strap S and pinch the strap against the roller 380 . Trigger biasing element 910s forces trigger 910 back to its original position. At this time, the bottom portion of the strap S is under the foot portion 320 . The operator then actuates the first push button actuator 1410 to initiate a strapping loop. In response, the controller 1600 begins the tensioning loop by controlling the motor 710 to begin rotating the motor output shaft 712 in the first rotational direction (which causes the tensioning wheel shaft 428b and the tensioning wheel 440 thereon to begin rotating). As the tensioning wheel 440 rotates, it pulls on the top portion of the strap S, thereby tensioning the strap S around the load L. During the entire tensioning cycle, the controller 1600 detects the current consumed by the motor 710 . When this current reaches a preset value associated with the (preset) desired strap tension for this strapping loop, the controller 1600 stops the motor 710, thereby terminating the tensioning loop.

The controller 1600 then automatically starts the sealing loop by controlling the motor 710 to start rotating the motor output shaft 712 in the second rotational direction. This causes jaw 536 and jaw 538 to: (1) pivot from their respective starting positions to their respective sealing positions to cut in the top and bottom portions of the sealing element SE and the strap S within the sealing element SE. Then (2) pivot from their respective sealing positions back to their respective starting positions, so that the strapping tool 50 can be removed from the strap S. Figure 12 shows the notched sealing element SE and the strip S.

While the sealing element includes jaws configured to cut into the sealing element to attach the two portions of the strap to itself, in other embodiments the sealing element may include other sealing mechanisms, such as a friction welded assembly or no Seal attachment assembly.

Other embodiments of the strapping tool may include fewer assemblies, elements, and/or features than those included in the strapping tool 50 described above and shown in the figures. For example, other strapping tools may include some (including only one) of a bi-directional pivot trigger, decoupling assembly, and anti-rotation gear. In other words, while the strapping tool 50 includes all of these assemblies, elements, and/or features, they are independent of each other and may be independently included in other strapping tools.

50: Strapping tool 100: shell 150: handle 190: socket 300: support 310: subject 320: feet 330: Tensioning assembly installation components 340: drive conversion assembly installation components 380: roller 400: tensioning assembly 400s: tensioner assembly biasing element 405: Tensioner assembly pivot shaft 405a: Tensioner assembly pivot axis 410: tensioning assembly support 420: tensioning assembly gear device 421: driven gear 422: 1st sun gear 423a, 423b, 423c: first planetary gear 424: carrier 424a: First planetary gear carrier 424b: Second sun gear 425: First ring gear 425it: Internal teeth 425ot: External teeth 426: Bearing Bushing 427: second ring gear 427it: Internal teeth 428: Tensioner mounting part 428a: second planetary gear carrier 428b: Tensioner shaft 429a, 429b, 429c: second planetary gear 420k: key 440: Tensioner 440a: Tensioner rotation axis 500: seal assembly 520: Jaw assembly 522:Coupler 524: Coupling Pivot 526: First coupler/jaw link 528:Second Coupling/Jaw Linkage 536: First Jaw 536a, 538a: teeth 538:Second Jaw 550: First Jaw Connector 540a: first link pin 540b: Second link pin 560a: First pivot pin 560b: Second pivot pin 700: drive assembly 710: Work assembly actuator/motor 712: motor output shaft 714a: first pulley 714b: Second pulley 720: First transmission 730:Second transmission 740: first belt 750: Third transmission 760: second belt 790: anti-rotation gear 800: conversion assembly 900: Trigger assembly 910: Trigger 910p1: Trigger pivot pin 910p2: Trigger travel pin 910p3: Trigger gear engagement pin 910s: Trigger Bias Element 912: trigger body 914: trigger head 914s: travel pin slot 916: Block feet 930: Trigger gear 930p: pin 930s: Trigger gear biasing element 932: Trigger Gear Mounting Head 932a: stop surface 934: Trigger Gear Arm 936: Trigger gear foot 936t: Trigger gear teeth 200: work assembly 1300: display assembly 1310: display screen 1320: touch panel 1400: actuation assembly 1410: first push button actuator 1420: Second push button actuator 1600: Controller 1700: sensor 1900: Decoupling Assembly 1910: decoupling assembly shaft 1912: Subject 1912a: First end 1912b: Second end 1914: First bearing support 1916: Second bearing support 1920: Decoupling assembly housing 1922: Tubular body 1922o: opening 1924: teeth 1930: First engageable element 1940: Scalable components 1940a: First end 1940b: Second end 1950: Second engageable element 1952: Tubular body 1954: Ring Flange/Flange 1954o: opening 1990a: First gear/intermediate gear 1990b: Second gear/intermediate gear S: belt SE: sealing element

1A and 1B are perspective views of an exemplary embodiment of a strapping tool according to the present disclosure.

Figure 2 is a block diagram of certain elements of the strapping tool of Figure 1A.

Figures 3A to 3C are perspective views of the working assembly of the binding tool of Figure 1A.

Figure 4A is a perspective view of the tensioning assembly of the working assembly of Figure 3A.

Fig. 4B is a perspective view of the tensioning assembly gear device and tensioning pulley of the tensioning assembly of Fig. 4A.

Figure 4C is a cross-sectional perspective view of the tensioner assembly gear device and tensioner pulley of Figure 4B taken along line 4C-4C of Figure 4B.

Fig. 4D is an exploded perspective view of the tensioning assembly gear device and tensioning pulley of Fig. 4B.

Figure 5A is a perspective view of the decoupling assembly of the working assembly of Figure 3A.

Figure 5B is a cutaway perspective view of the decoupling assembly of Figure 5A taken along line 5B-5B of Figure 5A.

Figure 5C is an exploded perspective view of the decoupling assembly of Figure 5A.

Figure 5D is a perspective view of a portion of the working assembly of Figure 3A, including a portion of the decoupling assembly of Figure 5A and a portion of the tensioning assembly of Figure 4A.

Figures 6A and 6B are perspective views of portions of the trigger assembly of the working assembly of Figure 3A.

Figures 7A, 8A and 9A are cross-sectional side views (taken along different planes) of portions of the working assembly of Figure 3A showing the tensioning assembly in the belt tensioning position and in the initial Location triggers.

Figures 7B, 8B and 9B are cross-sectional side views (taken along different planes) of portions of the working assembly of Figure 3A showing the tensioning assembly in the belt tensioned position and in an intermediate position trigger.

Figures 7C, 8C and 9C are cross-sectional side views of portions of the working assembly of Figure 3A (taken along different planes) showing the tensioning assembly in the strap inserted position and in the actuated position trigger.

Figure 10A is a front view of a portion of the seal assembly of the working assembly of Figure 3A with the jaws in their home position.

Figure 10B is a front view of the seal assembly of Figure 10A with the jaws in their starting position.

Figure 11 is a diagrammatic front view of a strap and sealing element positioned about a load prior to tensioning and sealing by a strapping tool.

Figure 12 is a perspective view of the notched sealing element.

Domestic deposit information (please note in order of depositor, date, and number) none Overseas storage information (please note in order of storage country, institution, date, and number) none

50: Strapping tool

100: shell

150: handle

190: socket

1300: display assembly

1400: actuation assembly

1410: first push button actuator

1420: Second push button actuator

Claims (19)

A strapping tool comprising: a support; a tensioning assembly mounted to the support and pivotable relative to the support between a strap tensioning position and a strap insertion position; and A trigger assembly, the trigger assembly includes: A trigger comprising a trigger body and a trigger head extending from the trigger body, wherein the trigger head defines a curved slot, wherein the trigger is mounted to the sheet via a trigger pivot pin The tensioning assembly is pivotable relative to the tensioning assembly and about the trigger pivot pin between an initial position and an intermediate position, and is capable of pivoting relative to the support and about the tensioning assembly pivot axis the wire pivots from the neutral position to an actuated position to move the tensioning assembly from the strap tensioning position to the strap insertion position; a travel pin mounted to the tensioning assembly and extending through the slot of the trigger head to constrain the trigger relative to the tensioning assembly to pivot between the initial position and the intermediate position between; and A trigger gear comprising a trigger gear head defining a stop surface, a trigger gear arm extending from the trigger gear head, and connected to the trigger gear arm and including trigger gear teeth A trigger gear foot, wherein the trigger gear head is rotatably mounted to the travel pin. The strapping tool of claim 1, wherein the tensioning assembly pivot axis and a trigger pivot axis are different and parallel to each other. The strapping tool as claimed in claim 1, wherein when the trigger is in the initial position, the travel pin is at a first end of the slot, and when the trigger is in the intermediate position, the travel pin at an opposite second end of the slot. The strapping tool of claim 3, wherein the travel pin is at the second end of the slot when the trigger is in the actuated position. The strapping tool as claimed in claim 1, wherein the trigger assembly further comprises a trigger biasing element for biasing the trigger to the initial position. The strapping tool as claimed in claim 5, wherein the trigger biasing element comprises a torsion spring. The strapping tool as claimed in claim 1, wherein the trigger assembly further comprises a trigger gear engaging element and a trigger gear biasing element, the trigger gear engaging element is fixedly attached to the trigger, the trigger A trigger gear biasing element biases the stop surface of the trigger gear head into contact with the trigger gear engaging element. The strapping tool as claimed in claim 7, wherein the trigger gear biasing element comprises a torsion spring. The strapping tool as claimed in claim 7, wherein the trigger gear engaging element comprises a pin. The strapping tool as claimed in claim 1, wherein the tensioning assembly includes a tensioning wheel and a tensioning assembly gear, and the tensioning assembly gear is operatively connected to the tensioning wheel so that the tensioning The tensioning wheel rotates in a tensioning rotation direction around the tensioning wheel rotation axis, and the strapping tool further includes: a motor operatively connected to the tensioner assembly gear to drive the tensioner assembly gear; and a decoupling assembly actuatable to enable rotation of the tensioning wheel about the tensioning wheel axis of rotation in a direction opposite to the direction of tensioning rotation, Wherein the trigger is operatively connected to the decoupling assembly to actuate the decoupling assembly when pivoted from the initial position to the intermediate position. The strapping tool as claimed in claim 10, wherein the decoupling assembly includes a decoupling assembly housing having a tubular body mounted to the tensioning assembly and capable of relative to the The tensioner assembly rotates, and the body includes teeth extending around an outer periphery of the body. The strapping tool as claimed in claim 11, wherein the trigger assembly further comprises a trigger gear engaging element and a trigger gear biasing element, the trigger gear engaging element is fixedly attached to the trigger, the trigger A trigger gear biasing element biases the stop surface of the trigger gear head into contact with the trigger gear engaging element such that pivoting of the trigger from the starting position to the actuated position causes the trigger gear to The teeth engage the teeth of the body of the decoupling assembly housing and rotate the decoupling assembly housing relative to the tensioner assembly. The strapping tool as described in claim 11, wherein the decoupling assembly further includes: a decoupling assembly shaft disposed at least partially within the decoupling assembly housing; a first engagement member disposed at least partially within the decoupling assembly housing and mounted to the decoupling assembly shaft for rotation therewith; a second engagement element disposed at least partially within the decoupling assembly housing and rotationally fixed relative to the tensioning assembly; and an expandable element disposed at least partially within the decoupling assembly housing and circumscribing at least a portion of the first engageable element and at least a portion of the second engageable element and having a A first end of two engageable elements and a second end fixed to the housing of the decoupling assembly, wherein the expandable element is dimensioned such that when at rest, the expandable element engages the first end of the decoupling assembly The element and the second engageable element exert a compressive force, thereby preventing the first engageable element and the second engageable element from rotating relative to each other. The strapping tool of claim 13, wherein rotation of the decoupling assembly housing via movement of the trigger from the initial position to the intermediate position causes the second end of the expandable member to move relative to the expandable member. The first end of the expansion element is rotated, causing an inner diameter of the expandable element to expand and enabling rotation of the first engageable element relative to the second engageable element. The strapping tool as claimed in claim 14, wherein the expandable element comprises a torsion spring. The strapping tool as claimed in claim 13, wherein the tensioning assembly gear device comprises a ring gear, the ring gear includes external teeth, wherein the decoupling assembly shaft includes teeth, and wherein the strapping tool further includes an intermediate gear device , the intermediate gear arrangement operably connects the outer teeth of the ring gear with the teeth of the decoupling assembly shaft, wherein the decoupling assembly shaft and the intermediate gear arrangement prevent the ring gear from rotating unless the The decoupling assembly is actuated. A strapping tool comprising: a support; a seal assembly mounted to the support and comprising a plurality of jaws movable from respective jaw start positions to respective jaw seal positions; a motor comprising a motor output shaft; a first flywheel mounted to the motor output shaft, wherein the first flywheel is configured to rotate with the motor output shaft when the motor output shaft rotates in a first rotational direction, and when the motor output the shaft does not rotate with the motor output shaft when rotating in a second rotational direction opposite to the first rotational direction; a pulley mounted to the first flywheel; a belt operatively connects the pulley to the seal assembly, a second flywheel mounted to the support; and an anti-rotation gear mounted to the second freewheel and drivingly engaged by the belt, wherein the second freewheel is configured such that the belt can drive the anti-rotation gear to rotate in the first direction of rotation and prevent The belt drives the anti-rotation gear to rotate along the second rotation direction. The strapping tool according to claim 17, further comprising: a tensioning assembly mounted to the support and capable of pivoting relative to the support between a strap tensioning position and a strap insertion position Rotate, wherein the tensioning assembly includes a tensioning wheel and a tensioning assembly gear, the tensioning assembly gear is operatively connected to the tensioning wheel to rotate the tensioning wheel, wherein the motor can is operatively connected to the tensioner assembly gear to drive the tensioner assembly gear. The binding tool as described in claim 18, further comprising: a third flywheel mounted to the motor output shaft, wherein the third flywheel is configured to rotate with the motor output shaft when the motor output shaft rotates in the second rotational direction, and when the motor output the shaft does not rotate with the motor output shaft when rotating in the first rotational direction; a second pulley mounted to the third flywheel; and A second belt operatively connects the second pulley to the tensioner assembly gearing.

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