Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B13/00—Bundling articles
  • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
  • B65B13/22—Means for controlling tension of binding means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B13/00—Bundling articles
  • B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
  • B65B13/025—Hand-held tools
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B13/00—Bundling articles
  • B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
  • B65B13/185—Details of tools
  • B65B13/187—Motor means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
  • B65B65/02—Driving gear

Definitions

• the present disclosure relates to strapping devices, and more particularly to strapping devices configured to tension strap around a load and to attach overlapping portions of the strap to one another to form a tensioned strap loop around the load.
• Strapping devices are configured to tension strap around a load and to attach overlapping portions of the strap to one another to form a tensioned strap loop around the load.
• Battery-powered strapping devices are one type of strapping device. To use one of these strapping devices to form a tensioned strap loop around a load, an operator pulls strap leading end first from a strap supply, wraps the strap around the load, and positions the leading end of the strap below another portion of the strap.
• Figure 1C is a block diagram of certain components of the strapping device of Figures 1A and IB.
• Figure 2D is a perspective view of a friction-weld strap joint formed by the strapping device of Figure 1A to attach two overlapping portions of strap.
• Figures 3 A and 3B are perspective views of the working assembly of the strapping device of Figures 1A and IB with the tensioning assembly of the working assembly in the tensioning position and the offset coupling of the working assembly in the first configuration.
• Figure 3C is a perspective view similar to Figure 3B with the tensioning assembly in the strap-insertion position and the offset coupling in the second configuration.
• Figure 4A is a perspective view of the tensioning assembly of the working assembly of Figures 3A-3C.
• Figure 4C is a cross-sectional perspective view of the tensioning assembly of Figure 4 A taken along line 4C-4C of Figure 4 A.
• Figure 4D is a front elevational view of the rocker mover of the tensioning assembly of Figure 4A.
• Figure 5 A is a perspective view of the decoupling assembly of the working assembly of Figures 3A-3C.
• Figure 5B is an exploded perspective view of the decoupling assembly of Figure 5A.
• Figure 5C is a cross-sectional perspective view of the decoupling assembly of Figure 5 A taken along line 5C-5C of Figure 5 A.
• Figures 6A and 6B are perspective views of the actuating assembly of the working assembly of Figures 3A-3C.
• Figures 7A and 7B are perspective views of the cam-engaging assembly of the working assembly of Figures 3A-3C with the actuating-assembly engager in its home and actuated positions, respectively.
• Figures 8A-8G are side views of part of one side of the working assembly of Figures 3A-3C showing the tensioning assembly moving from its tensioning position to its strapinsertion position and back to its tensioning position. Certain components of the working assembly are not shown for clarity.
• Figures 9A-9G are side views of part of the opposite side of the working assembly of Figures 3A-3C that correspond to Figures 8A-8G. Certain components of the working assembly are not shown for clarity.
• Figure 11A is a front elevational view of the offset coupling of Figures 10A and 10B in the first configuration.
• Figure 12A is a front elevational view of the offset coupling of Figures 10A and 10B in the second configuration.
• Figure 12B corresponds to Figure 12A but with the first driven element of the offset coupling removed.
• mounting methods such as mounted, connected, etc.
• mounting methods are not intended to be limited to direct mounting methods but should be interpreted broadly to include indirect and operably mounted, connected, and like mounting methods.
• This specification is intended to be taken as a whole and interpreted in accordance with the principles of the present disclosure and as understood by one of ordinary skill in the art.
• FIGS 1A-12B show one example embodiment of a strapping device of the present disclosure in the form of a battery-powered portable strapping device 50 and certain assemblies and components thereof.
• the strapping device 50 is configured to carry out a strapping cycle to tension and seal strap S (plastic strap in this example embodiment) around a load L on a pallet P to form a tensioned strap loop that secures the load L to the pallet P.
• tension and seal strap S plastic strap in this example embodiment
• An operator pulls strap S from a strap supply (not shown) and wraps the strap around the load L and through the openings in the pallet P until a lower portion LP of the strap S (which includes the leading end of the strap S) is positioned below an upper portion UP of the strap S, as shown in Figure 2A.
• the strapping device 50 includes a housing 100 ( Figures 1A and IB), a working assembly 200 ( Figures 3A-3C), a cover 1300 ( Figure 1A), first and second pushbutton actuators 1410 and 1440 ( Figures 1A and IB), a display assembly 1490 ( Figures 1A-1C), a power supply 1500, a controller 1600 ( Figure 1 C), and one or more sensors 1700 ( Figure 1 C).
• the housing 100 which is shown in Figures 1 A and IB, is formed from multiple components (not individually labeled) that collectively at least partially enclose and/or support some (or all) of the other assemblies and components of the strapping device 50.
• the housing 100 includes a front housing section 110, a rear housing section 120, a motor housing section 130, and a handle section 150.
• the front housing section 110 at least partially encloses and/or supports at least some of the components of the working assembly 200.
• the rear housing section 120 at least partially encloses and/or supports at least some of the components of the display assembly 1490 and defines a receptacle sized, shaped, and otherwise configured to receive and at least partially enclose and/or support the power supply 1500 and the controller 1600.
• the motor housing section 130 extends between and connects the bottoms of the front and rear housing sections 110 and 120 and at least partially encloses and/or supports at least some of the components of the working assembly 200, including the motor 1100.
• the handle housing section 150 extends between and connects the tops of the front and rear housing sections 110 and 120 and defines a handle used by the operator. This is merely one example, and in other embodiments the components of the strapping device may be supported and/or enclosed by any suitable portion of the housing 100.
• the housing 100 may be formed from any suitable quantity of components joined together in any suitable manner.
• the housing 100 is formed from plastic, though it may be made from any other suitable material in other embodiments.
• the cover 1300 is attached to the front housing section 110 and covers part of the working assembly 200.
• the working assembly 200 which is best shown in Figures 3A- 3C, includes the majority of the components of the strapping device 50 that are configured to carry out the strapping cycle to tension the strap around the load, attach the overlapping portions of the strap to one another, and cut the strap from the strap supply.
• the working assembly 200 includes a support 300, a tensioning assembly 400, a decoupling assembly 500, an actuating assembly 600, a cam-engaging assembly 700, an offset coupling 800, a sealing assembly 900, a transmission 1000, and a motor 1100.
• the support 300 which is best shown in Figures 3A-3C, serves as a direct or indirect common mount for the tensioning assembly 400, the decoupling assembly 500, the actuating assembly 600, the cam-engaging assembly 700, the offset coupling 800, the sealing assembly 900, the transmission 1000, and the motor 1100.
• the support 300 includes a base 300b and a frame 300f extending from the base 300b.
• the base 300b supports a tension plate 312 below the tension wheel 400w of the tensioning assembly 400 (described below) and a weld plate 314 below the weld shoe 912 of the sealing assembly 900 (described below).
• the tensioning-assembly gearing includes: a driven shaft 410; a tensioningassembly freewheel 412; a first set of planet gears 414a, 414b, and 414c; a gear cover 415; a rocker mover 420; a rollback ring gear 430; a rollback intermediate gear 431; a carrier 432; a second set of planet gears 434a, 434b, 434c, and 434d; a third set of planet gears 436a, 436b, and 436c; and bearings 405b 1, 405b2, 405b3, and 405b4.
• the carrier 432 includes a planet-gear carrier 432a to which the second set of planet gears 434a-434d are rotatably mounted (such as via respective bearings and mounting pins) and a second sun gear 432b rotatable with (and here integrally formed with) the planet-gear carrier 432a about the tension-wheel rotational axis A400w.
• the third set of planet gears 436a-436c are rotatably mounted to the rocker 400r (such as via respective bearings and mounting pins).
• the rocker mover 420 which is best shown in Figure 4D, includes a ring gear 421 having internal teeth 42 lit and supporting an annular cam support 422 that includes angularly spaced first, second, and third cams 424, 426, and 428.
• the first cam 424 has a leading end 4241e and a trailing end 424te connected by a convexly curved finger-engaging surface 424s.
• the finger-engaging surface 424s has an apex 424s’ that corresponds to the point on the fingerengaging surface 424s furthest from the center of the cam support 422.
• the shaft portion 410a of the driven shaft 410 extends through and is engaged by the tensioning-assembly freewheel 412, which is itself supported by and positioned within a bore defined through the cover 400c, which is attached to the rocker 400r.
• the tensioning-assembly freewheel 412 is configured to permit rotation of the driven shaft 410 relative to the rocker 400r in a tensioning rotational direction T — referred to as the tensioning direction T — and to prevent rotation of the driven shaft 410 in a rollback direction TREV, which is the rotational direction opposite the tensioning direction T.
• the first sun gear 410b of the driven shaft 410 meshes with and drivingly engages the first set of planet gears 414a-414c.
• the second sun gear 432b of the carrier 432 meshes with and drivingly engages the third set of planet gears 436a-436c.
• the tension wheel 400w is rotatably mounted to the rocker 400r via bearings 405b3 and 405b4 such that the third set of planet gears 436a-436c mesh with internal teeth (not labeled) of the tension wheel 400w and therefore drivingly engage the tension wheel 400w.
• the tension wheel 400w is held in place longitudinally (in the direction of the tensioning-wheel axis A400w) via a suitable retainer and suitable fasteners (not shown for clarity).
• the tension wheel 400w When the tensioning assembly 400 is in the strap-insertion position, the tension wheel 400w is spaced-apart from the tension plate 312 to enable the overlapping upper and lower portions of the strap to be inserted between the tension wheel 400w and the tension plate 312.
• the weight of the tensioning assembly 400 and one or more springs or other biasing elements bias the tensioning assembly 400 to the tensioning position.
• the tensioning-assembly mounting shaft 395 extends through openings defined through the frame 300f of the support 300 and openings defined through first and second mounting ears 400rl and 400r2 of the rocker 400r.
• the rollback intermediate gear 431 is rotatably mounted to the tensioning-assembly mounting shaft 395 and positioned between the mounting ears 400rl and 400r2 of the rocker 400r such that teeth of the rollback intermediate gear 431 mesh with the external teeth 430ot of the rollback ring gear 430.
• the decoupling assembly 500 controls whether the rollback ring gear 430 can rotate about the tensioning-wheel axis A400w.
• the decoupling assembly 500 prevents the rollback ring gear 430 from rotating about the tensioning-wheel axis A400w, which enables the motor 1100 to drive the tension wheel 400w to tension the strap and enables the tension wheel 400w to hold tension in the strap after the tensioning cycle is complete.
• the rollback ring gear 430 is rotatable about the tensioning-wheel axis A400w such that the tension wheel 400w can release the held tension.
• the decoupling assembly 500 includes a decouplingassembly shaft 510, a first engageable element 520, a second engageable element 530, an expandable element 540, a sleeve 550, a threaded fastener 560, a spacer 570, and a gear 580.
• the decoupling-assembly shaft 510 includes a body 512 having a first end 512a having an irregular cross-section and second end 512b having radially extending teeth around its circumference.
• a first support 514 extends from the first end 512a.
• the first engageable element 520 comprises a tubular bushing having a cylindrical outer surface and an interior surface having a perimeter that matches the perimeter of the first end 512a of the body 512 of the decoupling-assembly shaft 510.
• the second engageable element 530 includes a tubular body 532 and an annular flange 534 at one end of the body 532. An opening 534o is defined through the flange 534.
• the expandable element 540 includes a torsion spring having a first end 540a and a second end 540b.
• the sleeve 550 includes a tubular body 552 having teeth 554 extending around its outer circumference.
• the body 552 defines an opening 554o.
• the first engageable element 520 is mounted on the first end 512a of the body 512 of the decoupling-assembly shaft 510 for rotation therewith about a decoupling-assembly rotational axis A500.
• the second engageable element 530 circumscribes the first support 514 of the body 512 of the decoupling-assembly shaft 510 and is positioned such that the body 532 is adjacent and coaxial with the first engageable element 520.
• the expandable element 540 circumscribes the first engageable element 520 and the body 532 of the second engageable element 530.
• the outer diameters of the first engageable element 520 and the body 532 of the second engageable element 530 are substantially the same and are equal to or larger than the resting inner diameter of the expandable element 540. This means that when the decoupling assembly 500 is in a coupled configuration (described below), the expandable element 540 exerts a compressive force on the first engageable element 520 and the body 532 of the second engageable element 530 that prevents those components (and the decoupling- assembly shaft 510) from rotating relative to one another about the decoupling-assembly rotational axis A500.
• the second end 540b of the expandable element 540 is received in the opening 534o defined through the flange 534 of the second engageable element 530.
• At least part of the decoupling-assembly shaft 510, the first engageable element 520, the second engageable element 530, and the expandable element 540 are housed within and circumscribed by the sleeve 550.
• the first end 540a of the expandable element is received in the opening 554o defined through the body 552 of the sleeve 550.
• the gear 580 is mounted to the second end 512b of the body 512 of the decoupling-assembly shaft 510 such that the gear 580 is fixed in rotation with the decoupling-assembly shaft 510.
• the spacer 570 separates the first engageable element 520 and the gear 580.
• the decoupling assembly 500 is mounted to the frame 300f of the support 300 and operatively connected to the tensioning-assembly gearing. More specifically, the decoupling assembly 500 is mounted to the frame 300f via the fastener 560, which fixes the second engageable element 530 in rotation relative to the frame 300f such that the second engageable element 530 — and the second end 540b of the expandable element 540 received in the opening 534o of the flange 534 of the second engageable element 530 — cannot rotate relative to the frame 300f about the decoupling-assembly rotational axis A500.
• the gear 580 operably connects the body 512 of the decoupling-assembly shaft 510 to rollback ring gear 430 of the tensioning-assembly gearing. Specifically, the teeth on the gear 580 mesh with the teeth of the rollback intermediate gear 431, which in turn mesh with the external teeth 430ot of the rollback ring gear 430. In other embodiments, there is no rollback intermediate gear, and the teeth of the gear of the decoupling assembly mesh directly with the external teeth of the rollback ring gear.
• the decoupling-assembly shaft 510 Since the body 532 of the second engageable element 530 is fixed in rotation relative to the frame 300f of the support 300 and the decoupling-assembly shaft 510 is fixed in rotation with the first engageable element 520, the decoupling-assembly shaft 510 — and thus the gear 580 — is fixed in rotation relative to the frame 300f. Since the gear 580 meshes with the rollback intermediate gear 431, when in the coupled configuration the decoupling assembly 500 prevents the rollback intermediate gear 431 from rotating about the rocker axis A400r, which in turn prevents the rollback ring gear 430 from rotating about the tensioning-wheel axis A400w.
• the decoupling assembly 500 is switchable (such as by the actuation assembly 600 as described below) from the coupled configuration to the release configuration to enable the first engageable element 520 and the decoupling-assembly shaft 510 to rotate relative to the second engageable element 530 about the decoupling-assembly rotational axis A500.
• the second engageable element 530 and the second end 540b of the expandable element 540 are fixed in rotation relative to frame 300f.
• the sleeve 550 is rotated about the decoupling-assembly rotational axis A500 from a coupled position to a release position in a release direction R550 relative to the frame 300f, the second end 540b of the expandable element 540, and the second engageable element 530. Since the first end 540a of the expandable element 540 is received in the opening 554o defined in the body 552 of the sleeve 550, the first end 540a rotates with the sleeve 550.
• the inner diameter of the expandable element 540 near its first end 540a begins expanding, and eventually expands enough (thereby reducing the compression force or eliminating it altogether) to enable the first engageable element 520 and the decoupling-assembly shaft 510 to rotate about the decoupling-assembly rotational axis A500 relative to the second engageable element 530 (and the expandable element 540).
• the first end 540a of the expandable element 540 biases the sleeve 550 to rotate in a coupling direction C55O opposite the release direction R550 until the sleeve 550 reaches the coupled position (meaning the decoupling assembly 500 is back in its coupled configuration).
• the decoupling-assembly actuator 620 includes an actuated arm 622, a gear arm 624 connected to the actuated arm 622, and a gear 626 at a free end of the gear arm 624.
• the actuator mounting pin 690 is positioned at the bottom of the slots.
• the actuator mounting pin 690 and the slots therefore define the range of (pivoting) movement of the actuating-assembly body 610.
• the second coupler 840 includes a first link 842, a first connector 844, and a second connector 846.
• the first link 842 includes an annular body 842a and first and second arms 842b and 842c extending from opposite sides of the body 842a.
• the first connector 844 is pivotably connected at one end to the first arm 842b and pivotably connected at its other end to the first body 812 of the first driven element 810 via receipt of a pivot 844p in the second opening 812o2 of the first body 812.
• the second connector 846 is pivotably connected at one end to the second arm 842c and pivotably connected at its other end to the second body 882 of the second driven element 880 via receipt of a pivot 846p in the second opening 882o2 of the second body 812.
• the third coupler 850 includes a first link 852, a first connector 854, and a second connector 856.
• the first link 852 includes an annular body 852a and first and second arms 852b and 852c extending from opposite sides of the body 852a.
• the first connector 854 is pivotably connected at one end to the first arm 852b and pivotably connected at its other end to the first body 812 of the first driven element 810 via receipt of a pivot 854p in the third opening 812o3 of the first body 812.
• the second connector 856 is pivotably connected at one end to the second arm 852c and pivotably connected at its other end to the second body 882 of the second driven element 880 via receipt of a pivot 856p in the third opening 882o3 of the second body 812.
• the offset coupling 800 operably connects the drive gear 1012 of the transmission 1000 to the driven shaft 410 of the tensioning assembly 400.
• the first driven element 810 of the offset coupling is mounted to the support 300, such as to a bracket 810 of the support 300 ( Figure 3C) via a bearing (not shown), such that the drive gear 1012 drivingly engages the driven gear 814 of the first driven element 810 to rotate the first driven element 810 about the first rotational axis A810 relative to the support 300.
• the first driven element 810 remains in place (supported by the support 300) and the first, second, and third couplers 830, 840, and 850 are reconfigured (via rotation about the mounting shaft 864 enabled by their respective pivotable connections to the first and second driven element 810 and 880) to enable the second driven element 880 to move with the tensioning assembly 400.
• the orientations of the first, second, and third links 832, 842, and 852 when the offset coupling 800 is in the first configuration are transverse to their respective orientations when the offset coupling is in the second configuration.
• the strapping device may include any suitable offset coupling operably connecting the transmission to the tensioning assembly to drive the tensioning assembly.
• the controller 1600 which is shown in Figure 1C, includes a processing device (or devices) communicatively connected to a memory device (or devices).
• the controller may be a programmable logic controller.
• the processing device may include any suitable processing device such as, but not limited to, a general-purpose processor, a specialpurpose processor, a digital-signal processor, one or more microprocessors, one or more microprocessors in association with a digital-signal processor core, one or more applicationspecific integrated circuits, one or more field-programmable gate array circuits, one or more integrated circuits, and/or a state machine.
• the controller 1600 determines that the tensioning assembly 400 has reached its strap-insertion position (such as based on feedback from one of the sensors 1700), as shown in Figures 8D and 9D, the controller 1600 controls the motor 1100 to stop rotating the output shaft.
• the apex 424s’ of the finger-engaging surface 424s of the cam 424 engages the camengaging finger 714 when the tensioning assembly 400 is in its strap-insertion position.
• the bearing point of the cam 424 against the cam-engaging finger 714 is the apex 424s’.
• the tensioning-assembly freewheel 412 prevents the driven shaft 410 from reversing, ensuring the tensioning assembly 400 remains in the strap-insertion position.
• the tensioningassembly gearing operatively connects the motor 1100 and the transmission 1000 to the tensioning assembly 400 to move the tensioning assembly 400 from its tensioning position to its strap-insertion position.
• a catch engages the projection 622a of the actuated arm 622 of the decoupling assembly actuator 620 and holds it in place, holding the decoupling assembly 500 in its release configuration.
• the controller 1600 initiates the strapping cycle.
• the first sun gear 410b also drives the second set of planet gears 434a-434d. Since the decoupling assembly 500 is in its coupled configuration, it prevents the rollback ring gear 430 from rotating about the tension-wheel rotational axis A400w, and rotation of the second set of planet gears 434a-434d causes the carrier 432 — including the second sun gear 432b — to rotate about the tension-wheel rotational axis A400w in the tensioning direction T.
• the second sun gear 432b drives the third set of planet gears 436a-436c, which causes the tension wheel 400w to rotate about the tension-wheel rotational axis A400w in the tensioning direction T. Accordingly, the tensioning-assembly gearing operatively connects the motor 1100 and the transmission 1000 to the tension wheel 400w to rotate the tension wheel 400w about the tensionwheel rotational axis A400w in the tensioning direction T.
• the controller 1600 automatically starts the sealing cycle by controlling the motor 1100 to begin rotating the output shaft in the second drive direction. This causes the transmission 1000 to drive the toothed belt 900b to begin rotating the eccentric and oscillating the weld shoe 912 and pivot the weld arm 910 to its welding position. As the weld arm 910 reaches the welding position, the weld shoe 912 forces the overlapping upper and lower layers of strap against the weld plate 314 while the cutter 914 cuts the upper strap layer from the strap supply. The oscillating movement of the weld shoe 912 locally melts the portions of the upper and lower strap layers together. After a preset period of time or a preset quantity of rotations of the motor output shaft, the controller 1600 controls the motor 1100 to stop rotating the output shaft, completing the sealing cycle.
• the operator again pulls the trigger 612, and in doing so moves the actuating-assembly body 610 from the home position to the actuated position.
• the decoupling assembly actuator 620 switches the decoupling assembly 500 from the coupled configuration to the release configuration.
• the strap continues to exert the torque on the tension wheel 400w that acts in the rollback direction TREV. Switching the decoupling assembly 500 from the coupled configuration to the release configuration enables the tension wheel 400w to rotate in the rollback direction TREV to release that torque in a controlled manner.
• the decoupling assembly 500 continues to prevent the rollback ring gear 430 of the tensioning-assembly gearing from rotating in the rollback direction TREV, which as explained above prevents the tension wheel 400w from rotating in the rollback direction TREV after tensioning so the tension wheel 400w can hold the tension in the strap.
• the decoupling assembly actuator 620 begins rotating the sleeve 550 of the decoupling assembly 500 to its release position, and the inner diameter of the expandable element 540 of the decoupling assembly 500 begins expanding.
• the controller 1600 controls the motor 1100 to rotate the output shaft in the first drive direction to raise the tensioning assembly 400 to its strap-insertion position, as explained above. The operator then removes the strapping device 50 from the tensioned strap loop.
• the offset coupling of the present disclosure may be employed in any suitable strapping device in which the tensioning wheel is supported by a movable rocker.
• the above configuration and method of raising and lowering the rocker is merely on example.
• the sealing assembly of the above-described example embodiment of the strapping device is configured to form a friction-welded strap joint
• the sealing assembly may comprise other sealing mechanisms (such as notching jaw assembly, a crimping jaw assembly, a sealless joint assembly, an ultrasonic welding assembly, or a hot-knife assembly) in other embodiments configured to seal any suitable type of strap (such as metal, plastic, or paper strap).
• the above-described example embodiment of the strapping device includes a single motor configured to drive both the tensioning assembly and the sealing assembly.
• the strapping device includes separate motors configured to drive the respective tensioning and sealing assemblies and may include separate transmissions for each motor.
• the strapping device described above is a handheld strapping device
• the strapping device may be any other suitable strapping device in other embodiments, such as a standalone automatic or semi-automatic strapping machine.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Basic Packing Technique (AREA)

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• 2024
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  • 2024-01-02 CN CN202480006557.8A patent/CN120569332A/zh active Pending
  • 2024-01-02 EP EP24703677.5A patent/EP4622876A1/de active Pending
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