Bundling machine with integrated hub

Abstract

The present disclosure relates to a torsion unit for a bundling machine. The torsion unit includes a drive assembly configured to generate and transmit torque, and a hub operatively coupled to the drive assembly. The hub is integrally formed as a single unitary structure and includes a circular body having a plurality of first channels extending radially outward from a central portion of the circular body. The hub includes an elongate member extends axially and integrally from the central portion of the circular body and includes a plurality of second channels extending along a longitudinal axis of the elongate member, each of the second channels being in fluid communication with a corresponding first channel of the circular body.

Description

BUNDLING MACHINE WITH INTEGRATED HUBFIELD OF INVENTION

[0001] The present invention relates to a bundling machine. More specifically, the present invention relates to a twisting unit with an integrated hub of the bundling machine.BACKGROUND OF INVENTION

[0002] A bundling machine is a semi-automatic / automatic industrial equipment used to bundle a pre-defined number of objects together using a bundling line, wire, or similar material. The machine has multiple functional units, each performing a specific task during the bundling operation. One of the critical operations in such machines involves the rotation of the twisting unit, which is responsible for twisting or winding the bundling material around the grouped objects. For optimal performance, the twisting unit is expected to maintain a precise circular motion around its rotational axis during operation. However, in practice, various factors such as manufacturing tolerances, assembly misalignment, material stress, orthermal deformation often cause deviations from the ideal circular path, commonly referred to as rotational runout. The presence of such runout adversely affects the precision and operational stability of the machine.

[0003] In conventional bundling machines, the twisting unit has interconnected rotating components that transmit rotational motion and perform mechanical actions such as clamping and twisting. Due to imperfect alignment or wear of these components, the rotating assembly often experiences radial and / or axial runout, leading to undesirable vibrations, inaccuracies, and excessive mechanical wear. Such irregularities further result in performance issues, including increased operational noise, reduced bundling accuracy, leakage from sealed sections, and premature fatigue or failure of rotating parts.

[0004] Therefore, there arises a need for an improved rotating component of a bundling machine to overcome the problems associated with the conventional bundling machines.SUMMARY OF INVENTION

[0005] The present invention relates to a torsion unit of a bundling machine for bundling one or more objects through a bundling line or the like. The torsion unit includes a drive assembly configured to generate and transmit torque and a hub operatively coupled to the drive assembly. The hub is integrally formed as a single unitary structure. The hub includes a circular body defining a plurality of first channels extending radially outward from a central portion of thecircular body and an elongate member extending axially and integrally from the central portion of the circular body. The elongate member includes a plurality of second channels extending along a longitudinal axis of the elongate member and in fluid communication with the corresponding first channels of the circular body.

[0006] The foregoing features and other features, as well as the advantages of the invention, will become more apparent from the following detailed description, which proceeds with reference to the accompanying figures.BRIEF DESCRIPTION OF DRAWINGS

[0007] The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the apportioned drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale.

[0008] Fig. 1 depicts an exemplary front elevation view of a bundling machine 100, according to an embodiment of the present disclosure.

[0009] Figs. 2A and 2B depict a perspective view of a torsion unit 200 of the bundling machine 100, according to an embodiment of the present disclosure.

[0010] Fig. 2C depicts an exploded view of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0011] Fig. 2D depicts a cross-sectional view of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0012] Figs. 3A and 3B depict a perspective view of a first housing 210 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0013] Figs. 3C and 3D depict a perspective view of a second housing 220 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0014] Figs. 4A and 4B depict a perspective view of a hub 230 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0015] Figs.4C depicts a cross-sectional view of the hub 230, in accordance with an embodiment of the present disclosure.

[0016] Fig. 5 depicts a perspective view of a ratchet wheel 260 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0017] Fig. 6 depicts a perspective view of an actuator 280 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0018] Fig. 7A depicts a perspective view of a plunger 270 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0019] Fig. 7B depicts an exploded view of the plunger 270, in accordance with an embodiment of the present disclosure.

[0020] Fig.8A depicts a perspective view of a twisting head assembly 295 of the torsion unit 200, in accordance with an embodiment of the present disclosure.

[0021] Fig. 8B depicts an exploded view of the twisting head assembly 295 of the torsion unit 200, in accordance with an embodiment of the present disclosure.DETAILED DESCRIPTION OF THE ACCOMPANYING DRAWINGS

[0022] Prior to describing the invention in detail, definitions of certain words or phrases used throughout this patent document will be defined: the terms "include" and "comprise", as well as derivatives thereof, mean inclusion without limitation; the term "or" is inclusive, meaning and / or; the phrases "coupled with" and "associated therewith", as well as derivatives thereof, may mean to include, be included within, interconnect with, contain, be contained within, connect to or with, couple to or with, be communicable with, cooperate with, interleave, juxtapose, be proximate to, be bound to or with, have a property of, or the like; Definitions of certain words and phrases are provided throughout this patent document, and those of ordinary skill in the art will understand that such definitions apply in many, if not most, instances to prior as well as future uses of such defined words and phrases.

[0023] Reference throughout this specification to "one embodiment," "an embodiment," or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment," "in an embodiment," and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to" unless expressly specified otherwise. An enumerated listing of items does not imply that any or all ofthe items are mutually exclusive and / or mutually inclusive, unless expressly specified otherwise. The terms "a," "an," and "the" also refer to "one or more" unless expressly specified otherwise.

[0024] Although the operations of exemplary embodiments of the disclosed method may be described in a particular, sequential order for convenient presentation, it should be understood that the disclosed embodiments can encompass an order of operations other than the particular, sequential order disclosed. For example, operations described sequentially may in some cases be rearranged or performed concurrently. Further, descriptions and disclosures provided in association with one particular embodiment are not limited to that embodiment, and may be applied to any embodiment disclosed herein. Moreover, for the sake of simplicity, the attached figures may not show the various ways in which the disclosed system, method, and apparatus can be used in combination with other systems, methods, and apparatuses.

[0025] Furthermore, the described features, advantages, and characteristics of the embodiments may be combined in any suitable manner. One skilled in the relevant art will recognize that the embodiments may be practiced without one or more of the specific features or advantages of a particular embodiment. In other instances, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments. These features and advantages of the embodiments will become more fully apparent from the following description and apportioned claims, or may be learned by the practice of embodiments as set forth hereinafter.

[0026] Various methods described herein may be practiced by combining one or more machine-readable storage media containing the code according to the present invention with appropriate standard computer hardware to execute the code contained therein. An apparatus for practicing various embodiments of the present invention may involve one or more computers (or one or more processors within a single computer) and storage systems containing or having network access to computer program(s) coded in accordance with various methods described herein, and the method steps of the invention could be accomplished by modules, routines, subroutines, or subparts of a computer program.

[0027] The present disclosure relates to a bundling machine for bundling one or more objects through a bundling line or the like. The bundling machine includes a torsion unit configured to apply a twisting action to the bundling line for tightening and securing the objects. The torsion unit includes a hub having a circular body and an elongate member extending axially from a central portion of the circular body. The circular body and the elongate member are integrallyformed as a single, unitary structure. The hub, as a single continuous component, ensures inherent structural rigidity and precise alignment between the circular body and the elongate member. The unitary structure of the hub minimizes rotational play, axial runout, and imbalance during high-speed torsional operation. This integral construction reduces wear on surrounding components, enhances operational stability under load, and significantly prolongs the service life of the torsion unit and the bundling machine.

[0028] Now referring to the figures, Fig. 1 depicts an exemplary front elevation view of a bundling machine 100, in accordance with an embodiment of the present disclosure. The bundling machine 100 (interchangeably referred to as a machine 100 herein after) is configured to bundle one or more objects through a bundling line. In an embodiment, the bundling line may be a wire, filament, thread, or any similar flexible elongate material suitable for securing objects into a bundle. The machine 100 includes various functional assemblies that cooperate to position the bundling line, apply tension, and ultimately form a secure knot or twist around the objects. In an embodiment, the machine 100 includes a platform 102, a vertical support member 104, a power unit 106, a binder track 108, and a torsion unit 200, etc. In an embodiment, the platform 102 provides a structural support to the various components of the machine 100. The components of the machine 100 may be mounted or secured to the platform 102 through welding, nut-bolt fixture, press-fit, fasteners, adhesives, or any one or combination thereof. The vertical support member 104 is mounted on the platform 102 and configured to support one more component of the machine 100. The vertical support member 104 may be coupled to the platform 102 through welding, nut-bolt fixtures, press-fit arrangements, mechanical fasteners, adhesives, or any one or combination thereof.

[0029] The vertical support member 104 is mounted on the platform 102 and is configured to support one or more components of the machine 100. The vertical support member 104 may be secured to the platform 102 using welding, nut-and-bolt fixtures, press-fit arrangements, fasteners, adhesives, or any combination of these techniques. In an embodiment, the vertical support member 104 is coupled to the platform 102 using nut-and-bolt fixtures.

[0030] The power unit 106 is mounted on the platform 102 and is configured to provide electrical and mechanical power for operating various components of the machine 100. The power unit 106 functions as an energy source of the machine 100, enabling coordinated actuation, motion control, and torque generation across multiple subcomponents of the machine 100. In an embodiment, the power unit 106 is operatively coupled to the binder track 108 and the torsionunit 200 to drive their respective movements and twisting actions during the bundling process. The power unit 106 may include a motor, power distribution circuitry, control electronics, or energy transmission elements designed to ensure stable and reliable operation under continuous or repetitive bundling cycles. The power unit 106 delivers controlled power to the functional assemblies of the machine 100 to facilitate efficient tightening, twisting, and securing of the bundling line around the objects.

[0031] The binder track 108 is mounted on the vertical support member 104 and is operatively coupled to the power unit 106. The binder track 108 is configured to define a controlled path for guiding the bundling line and to provide a passage through which one or more objects may be positioned for bundling. In an embodiment, the binder track 108 includes a plurality of track arms that are selectively movable between an open position and a closed position. In the open position, the track arms allow insertion or placement of the objects into the bundling region. In the closed position, the track arms cooperatively form a guided channel that constrains and directs the bundling line around the objects. The opening and closing of the track arms may be actuated mechanically, pneumatically, electrically, or by a combination thereof, and may be synchronized with the operation of the power unit 106 to ensure precise timing during the bundling cycle. The torsion unit 200 is mounted on the binder track 108 and is configured to impart a twisting action to the bundling line. The torsion unit 200 interacts with other components of the machine 100, such as the feeding mechanisms (not shown) and control modules (not shown). Together, these components enable the machine 100 to reliably perform high-speed and repeatable bundling operations.

[0032] Figs. 2A-2D depict various views of the torsion unit 200 of the machine 100, in accordance with an embodiment of the present disclosure. The torsion unit 200 is configured to apply the twisting action to the bundling line for securing the objects positioned within the binder track 108. The torsion unit 200 receives the bundling line from the binder track 108 and imparts rotational motion to twist, tighten, and lock the bundling line around the objects during the bundling operation. In an embodiment, the torsion unit 200 includes a first housing 210, a second housing 220, a hub 230 (shown in Fig. 2C), a drive assembly 240, an encoder 250, a ratchet wheel 260 (shown in Fig. 2C), a plurality of plungers 270 (shown in Fig. 2C), an actuator 280, a mounting plate 285, a plurality of pressure bars 290, a twisting head assembly 295, and one or more rotational control components that cooperate to generate the required torsional force. The torsion unit 200 may be operatively connected to the power unit 106 to receive mechanical orelectrical input necessary for producing the twisting motion. In an embodiment, the torsion unit 200 is operatively connected to the power unit 106 to receive electrical input for producing the twisting motion.

[0033] Figs. 3A and 3B depict various views of the first housing 210, in accordance with an embodiment of the present disclosure. The first housing 210 is coupled to the second housing 220 and adapted to provide structural support to the hub 230, the drive assembly 240, and the encoder 250. In an embodiment, the first housing 210 includes a first coupling surface 210a that comes into contact with a corresponding coupling surface of the second housing 220. The first coupling surfaces 210a, and the corresponding coupling surfaces are secured together using nutbolt fixtures 219. In an embodiment, the first housing 210 includes a first hole 211 and a second hole 212 disposed on the first coupling surface 210a and partially extending towards a second coupling surface 210b of the first housing 210. In an embodiment, the first hole 211 is configured to receive and support a portion of the hub 230 to ensure precise positioning and accurate detection of rotational parameters of the torsion unit 200. The second hole 212 is configured to receive and securely retain a portion of the drive assembly 240, thereby providing structural support and maintaining the alignment of the drive assembly 240 during rotational operation.

[0034] In addition, the first housing 210 includes a first circular groove 213a and a second circular groove 213b disposed on the first coupling surface 210a of the first housing 210 on a periphery of the first hole 211 and the second hole 212, respectively. The first circular groove 213a and the second circular groove 213b are adapted to accommodate a first ball bearing 215a and a second ball bearing 215b that facilitate stable rotational support, reduce friction, and accurately transmit rotational movement to the hub 230 from the drive assembly 240. The structural arrangement of the first housing 210 enables stable mounting of both the drive assembly 240 and the hub 230 while facilitating operational coupling with the second housing 220 and other components of the torsion unit 200.

[0035] Figs. 3C and 3D depict various views of the second housing 220, in accordance with an embodiment of the present disclosure. The second housing 220 is coupled to the binder track 108 and configured to provide secure and stable structural support to the torsion unit 200. The second housing 220 includes a first coupling surface 220a that contacts the first coupling surface 210a (in other words, the first coupling surface 210a secured with a first coupling surface 220a of the second housing 220 by nut-bolt fixtures 219). The first coupling surfaces 210a and the first coupling surface 220a are fastened together using nut-bolt fixtures 219 to ensure rigidmechanical engagement and precise axial and radial alignment of the torsion-unit components. Furthermore, the second housing 220 includes a second coupling surface 220b, arranged to interface with a corresponding mounting surface of the mounting plate 285, thereby enabling the stable attachment of the torsion unit 200 to the binder track 108.

[0036] In an embodiment, the second housing 220 includes a first cavity 221a and a second cavity 221b disposed on the first coupling surface 220a and extending partially from the first coupling surface 220a to the second coupling surface 220b. In an embodiment, the first cavity 221a is configured to accommodate a portion of the drive assembly 240, a portion of the hub 230, a portion of the encoder 250, and the ratchet wheel 260. The second cavity 221b is configured to partially receive and accommodate the drive gear 242 of the drive assembly 240. In an embodiment, the first cavity 221a and the second cavity 221b ensure rotational clearance between the cavity and the respective element of the machine 100. The first cavity 221a and the second cavity 221b provide space for lubrication flow and dissipation of heat generated during high-speed rotational operation.

[0037] Furthermore, the second housing 220 includes a hole 222 disposed on the second coupling surface 220b and extending partially toward the first coupling surface 220a. The hole 222 is axially aligned with the first cavity 221a and configured to receive and secure the ratchet wheel 260. Moreover, the second housing 220 includes a bottom hole 223 disposed on a bottom surface 220c of the second housing 220 and extending upward toward a top surface 220d of the second housing 220, exposing the hole 222. The bottom hole 223 is perpendicular to the hole 222. The hole 222 and the bottom hole 223 are configured to provide access, clearance, and proper alignment pathways for components of the torsion unit 200, such as the actuator 280.

[0038] Figs. 4A-4C depict various views of the hub 230, in accordance with an embodiment of the present disclosure. The hub 230 is housed within the second hole 212 of the first housing 210 and the first cavity 221a of the second housing 220. The hub 230 is operatively coupled to the drive assembly 240 and configured to transmit rotational motion for performing the twisting operation of the bundling line. In an embodiment, the hub 230 is integrally formed as a single unitary structure to provide structural rigidity and operational reliability. In an embodiment, the hub 230 is formed as a single monolithic component by machining, casting, or additive manufacturing, or any combination thereof. The hub 230 includes a circular body 231 having a first surface 231a and a second surface 231b, and an elongate member 235 extending axially from a central region of the first surface 231a of the circular body 231. The circular body 231 andthe elongate member 235 are integrally formed as a single piece through a monolithic manufacturing process such as precision machining, die-casting, metal injection molding, or any comparable fabrication technique capable of producing a seamless, non-jointed structure.

[0039] The single-piece configuration of the hub 230 provides a structurally robust and highly stable component that promotes precise rotational performance during torsional operation. The monolithic construction offers continuous material uniformity between the circular body 231 and the elongate member 235, thereby ensuring superior concentricity, balanced load distribution, and consistent geometric accuracy. This unified structure contributes to smoother rotation, improved vibration control, reduced wear on associated bearings and support elements, and an overall increase in the operational life and reliability of the torsion unit 200.

[0040] In an embodiment, the circular body 231 includes a plurality of first holes 233 disposed radially at intervals around the central portion of the circular body 231. Each first hole 233 is configured to receive a corresponding piston, plunger, punching member, or similar axially movable member of the torsion unit 200. In an embodiment, the first hole 233 is configured to receive a corresponding plunger 270 and to store fluid therein. The first hole 233 is shaped and sized to allow linear movement of the plunger 270 within a defined stroke length while maintaining close tolerance engagement with the plunger 270 surfaces to ensure efficient pressure transfer by the working fluid. The fluid stored within the first hole 233 may act as a pressure-transfer medium, a damping medium, or a lubrication medium, depending on the operational requirements of the torsion unit 200. The structural arrangement of the first channels 232 and the first hole 233 coordinated with each other to facilitate motion and internal fluid dynamics, thereby contributing to the regulated twisting performance of the bundling line. Further, the hub 230 includes a plurality of first channels 232 disposed within the circular body 231 and extending radially outward from a central portion of the circular body 231 as depicted in Fig. 4C. In an embodiment, each first channel 232 is formed integrally within the circular body 231 of the hub 230 and is dimensioned to guide a flow of fluid between the central region and the periphery of the circular body 231.

[0041] In an embodiment, the elongate member 235 includes a plurality of second channels 236 extending along a longitudinal axis of the elongate member 235 and in fluid communication with the corresponding first channel 232 of the circular body 231, thereby forming a continuous axial-radial flow path within the hub 230. The orientation and geometry of the second channels 236 facilitate guided axial movement of the working fluid and support balanced internal pressuredistribution across the length of the hub 230 during operation. Further, the elongate member 235 includes a plurality of holes 237 disposed on an outer surface of the elongate member 235 and extending perpendicular to and in fluid communication with the second channel 236. In an embodiment, the holes 237 provide an outlet or interface through which the fluid may be directed toward outer components or used for pressure equalization within the hub 230. Depending on the operational requirements, the holes 237 may function as lubrication access points, fluid discharge orifices, or maintenance ports for monitoring or regulating internal fluid conditions.

[0042] Together, the first channel 232 and the second channel 236 define a continuous internal passage network configured to allow, facilitate circulation, redistribution, or controlled venting of the working fluid throughout the hub 230. This integrated passage network improves thermal management by dissipating heat generated during high-speed rotation, enhances lubrication of internal moving components, contributes to balanced internal pressure distribution, and supports stable and reliable torsional performance of the torsion unit 200.

[0043] The drive assembly 240 is mounted on the first housing 210 and coupled to the hub 230. The drive assembly 240 is configured to generate and transmit torque for producing the rotational actuation of the torsion unit 200. In an embodiment, the drive assembly 240 includes a motor 241, a drive gear 242, a driven gear 243 as depicted in Fig. 2C, and one or more rotational transmission and control elements cooperatively adapted to deliver the required torsional output. In an embodiment, the motor 241 is secured within the second hole 212 of the first housing 210 and operatively coupled to the drive gear 242. The motor 241 is configured to generate rotational motion. The drive gear 242 operatively coupled to the motor 241. The driven gear 243 is mounted on the circular body 231 of the hub 230 and operatively coupled to the drive gear 242 to transmit the rotational motion to the hub 230. The motor 241 is configured to impart to the drive gear 242 with predetermined speed and torque characteristics.

[0044] In an embodiment, the coupling between the motor 241 and the drive gear 242 is achieved through a shaft-and-bearing arrangement, or any other comparable mechanical interface capable of ensuring stable torque transfer, controlled alignment, and reduced mechanical runout during operation. The driven gear 243 is mounted on the circular body 231 of the hub 230 and is in meshed engagement with the drive gear 242. The driven gear 243 is configured to receive and transmit the rotational motion imparted by the drive gear 242 to thehub 230, thereby facilitating controlled rotation of the torsion unit 200 for performing the bundling and twisting operations.

[0045] The encoder 250 is mounted on the first housing 210 and coupled to the hub 230 through the first hole 211 of the first housing 210. In an embodiment, the encoder 250 operatively coupled to the elongate member 235 of the hub 230 and configured to regulate the rotational movement of the hub 230. The encoder 250 is configured to monitor and regulate the rotational movement of the hub 230 with high precision. In an embodiment, the encoder 250 is configured to detect and transmit angular displacement, rotational speed, or positional change of the hub 230 to a corresponding control unit (not shown) of the machine 100. In an embodiment, the encoder 250 may include an encoder shaft, sensing disk, magnetic or optical sensing elements, and signal-processing circuitry arranged to generate output signals that correspond to the instantaneous rotational state of the hub 230.

[0046] In an embodiment, the encoder 250 is coaxially aligned with the elongate member 235 of the hub 230 through the second hole 212 of the first housing 210. This coaxial alignment of the elongate member 235 and the encoder 250 ensures direct mechanical coupling between the rotational axis of the hub 230 and the encoder input shaft, thereby enabling precise measurement of torsional motion without intermediate mechanical losses or positional offsets. The encoder 250 may be secured with the first housing 210 using a bearing or bushing interface to maintain stable positioning and minimize vibration during high-speed rotational operation.

[0047] In an embodiment, the rotational data generated by the encoder 250 may be used to regulate the speed, angular position, or number of twists imparted by the torsion unit 200 to the bundling line. In some embodiments, the encoder 250 provides closed-loop feedback to the drive assembly 240 or a controller, enabling controlled acceleration, deceleration, torque modulation, or automatic stopping of the twisting operation. This allows the torsion unit 200 to maintain consistent twist quality, reduce mechanical stress on components, and ensure repeatable performance across multiple bundling cycles.

[0048] Fig. 5 depicts a perspective view of the ratchet wheel 260, in accordance with an embodiment of the present disclosure. The ratchet wheel 260 is disposed within the second housing 220 of the torsion unit 200 and coupled to the hub 230 at an opposite side of the elongate member 235. In an embodiment, the retched wheel 260 is housed within the first cavity 221a and the hole 222 of the second housing 220. The ratchet wheel 260 is operatively coupled to the hub 230, the actuator 280, and the twisting head assembly 295. The ratchet wheel 260 isconfigured to regulate the incremental angular rotation of the hub 230 and to provide directional control or locking during the torsion operation. In an embodiment, the ratchet wheel 260 is coupled to the circular body 231 of the hub 230 at the second surface 231b and configured to rotate in response to the rotation of the hub 230. such that the ratchet wheel 260 rotates synchronously with the hub 230. Further, the ratchet wheel 260 includes a ratchet slot 261 on an outer circumferential surface thereof, configured to engage with a locking member 281 of the actuator 280. The ratchet slot 261 extends partially along the outer circumferential surface of the ratchet wheel 260. The ratchet slot 261 is selectively engageable with the actuator 280 to control indexing, restrict reverse rotation, or provide stepwise rotational advancement of the torsion mechanism.

[0049] The ratchet wheel 260 includes a plurality of ratchet holes 262 extending axially and configured to receive a respective plunger 270 and allow the axial movement of the plunger 270. In an embodiment, the ratchet holes 262 are disposed radially and extend along a length of the ratchet wheel 260. Each ratchet hole 262 is configured to receive the corresponding plunger 270 and allow axial movement therewithin. In an embodiment, the first hole 233 of the circular body 231 of the hub 230 and the ratchet hole 262 are axially aligned along a common longitudinal axis. This axial alignment of the first holes 233 and ratchet holes 262 ensure precise positional coordination between the ratchet wheel 260 and the hub 230, thereby facilitating reliable engagement, uniform axial force transmission, and consistent torsion-control performance during operation. In an embodiment, the torsion unit 200 includes a first sealing ring 249 disposed within the hole 222 of the second housing 220. The first sealing ring 249 is configured to prevent leakage of the fluids from the second housing 220.

[0050] Fig. 6 depicts a perspective view of the actuator 280, in accordance with an embodiment of the present disclosure. The actuator 280 is operatively coupled to the ratchet wheel 260 and configured to regulate the movement of the ratchet wheel 260. In an embodiment, the actuator 280 is mounted on the second housing 220 and is positioned such that the actuator 280 interfaces functionally with the ratchet wheel 260. In an embodiment, the actuator 280 is configured to be selectively engaged with the ratchet wheel 260 to regulate, control, or interrupt the rotational movement of the ratchet wheel 260 during the twisting operation of the machine 100. The actuator 280 includes a locking member 281 and a drive member 282. The locking member 281 includes a first end and a second end. The first end of the locking member 281 is pivotally coupled to the drive member 282 in a manner that allows the locking member 281 to move about adefined pivot axis when actuated by the drive member 282. The second end of the locking member 281 is disposed within and selectively engages and disengages with the ratchet slot 261 of the ratchet wheel 260. The drive member 282 is configured to impart a controlled pivotal or oscillatory motion to the locking member 281, thereby enabling precise engagement and disengagement of the locking member 281 with the ratchet wheel 260.

[0051] In an embodiment, the locking member 281 is positioned within the bottom hole 223 of the second housing 220. The bottom hole 223 is dimensioned and oriented to guide the movement of the locking member 281 while permitting sufficient stroke for interaction with the ratchet wheel 260. The second end of the locking member 281 is shaped or contoured to engage the ratchet slot 261 provided on the outer surface of the ratchet wheel 260. When the locking member 281 is driven into engagement with the ratchet slot 261, the rotational movement of the ratchet wheel 260 is effectively restricted, thereby halting or modulating the twisting action transmitted through the torsion and twisting assemblies.

[0052] Conversely, when the second end of the locking member 281 is pivoted out of engagement with the ratchet slot 261, the ratchet wheel 260 is permitted to rotate freely or under controlled motion, depending on the operational state of the machine 100. This selective engagement mechanism allows the actuator 280 to precisely regulate the rotation of the ratchet wheel 260, ensuring accurate timing and synchronization during the tightening and knot -forming phases of the bundling process. The structural cooperation between the locking member 281, the drive member 282, and the ratchet wheel 260 enhances operational stability, prevents unintended reverse rotation, and contributes to the reliable formation of a secure twist or knot around the bundled objects.

[0053] Figs. 7A and 7B depicts various views of the plunger 270 in accordance with an embodiment of the present disclosure. The plunger 270 is disposed within the ratchet hole 262 of the ratchet wheel 260 and is configured to move axially within the ratchet hole 262. The axial movement of the plunger 270 is transmitted directly to the twisting head assembly 295, to which the plunger 270 is mechanically coupled. Accordingly, actuation or displacement of the plunger 270 results in corresponding axial displacement of the twisting head assembly 295, thereby enabling the twisting head assembly 295 to engage, position, or tension a binding line during the bundling operation.

[0054] In an embodiment, the plunger 270 includes a first end 270a that is coupled to the twisting head assembly 295, and an opposite second end 270b that is disposed within the first hole 233formed in the circular body 231 of the hub 230. In an embodiment, the plunger 270 comprises an elongate shaft 271 having a first portion 271a and a second portion 271b. The first portion 271a has a greater diameter relative to the second portion 271b, thereby forming a stepped transition along the length of the elongate shaft 271. This stepped configuration enables guided movement of internal components and establishes defined locations for mounting and supporting associated elements such as sleeves, sealing elements, and resilient biasing members.

[0055] The plunger 270 includes an end cap 272 positioned at the terminal end of the second portion 271b of the elongate shaft 271. The end cap 272 serves both as a structural termination and as an anchoring surface for components mounted along the elongate shaft 271. The plunger 270 includes a sleeve 273 that is slidably disposed at the junction between the first portion 271a and the second portion 271b of the elongate shaft 271. The sleeve 273 is dimensioned to slide along at least a portion of the length of the second portion 271b, and the relative diameters of the two portions 271a and 271b of the elongate shaft 217 ensure stable guidance and limit unintended transverse play during axial movement.

[0056] In an embodiment, the plunger 270 includes a resilient member 274, such as a compression spring, that is disposed around the second portion 271b of the elongate shaft 271. The resilient member 274 is positioned between the end cap 272 and the sleeve 273 and is configured to exert a biasing force on the sleeve 273. This biasing force urges the sleeve 273 into a normally seated position at the junction of the first portion 271a and the second portion 271b. Under operational conditions, the resilient member 274 provides controlled axial return force, absorbs shock loads, and maintains consistent mechanical engagement between the plunger 270 and the twisting head assembly 295.

[0057] Furthermore, the plunger 270 includes a sealing ring 275 disposed at the stepped junction between the first portion 271a and the second portion 271b of the elongate shaft 271. The sealing ring 275 is configured to inhibit or prevent the passage of working fluid between the ratchet hole 262 and adjacent internal cavities. This fluid-sealing function ensures stable hydraulic or pneumatic behavior within the torsion unit 200 and contributes to the overall efficiency and reliability of the machine 100. In an embodiment, the torsion unit 200 includes at least two plungers 270.

[0058] The mounting plate 285 is secured on the second coupling surface 220b of the second housing 220 and is fixed in position using nut-bolt fixtures or an equivalent fastening mechanism. The mounting plate 285 serves as a structural support interface for components associated withthe ratchet wheel 260 and the twisting head assembly 295. In an embodiment, the mounting plate 285 includes a central hole 286 that is dimensioned to receive and support a portion of the ratchet wheel 260. The centrally located within the central hole 286 also accommodates a second ball bearing 277 and a washer 278. The second ball bearing 277 provides rotational support to the ratchet wheel 260 by minimizing frictional resistance and maintaining proper alignment during operational rotation. The washer 278 is positioned to distribute axial loads, maintain spacing between components, and prevent undue wear on the adjacent surfaces of the mounting plate 285 and the bearing assembly. Together, these elements ensure stable, low-friction, and accurately aligned rotation of the ratchet wheel 260 throughout the twisting operation of the torsion and twisting units.

[0059] The plurality of pressure bars 290 is disposed on and fixedly coupled to the mounting plate 285. The pressure bars 290 are arranged in predetermined positions on the mounting plate 285 to impart stabilizing forces onto the twisting head assembly 295 or associated structural components during operation. Each pressure bar 290 is configured to maintain axial alignment, minimize vibration, and control the degree of compression exerted on components interacting with the ratchet wheel 260. The fixed coupling of the pressure bars 290 to the mounting plate 285 ensures that these stabilizing forces remain consistent throughout repeated operational cycles, thereby enhancing the durability, accuracy, and overall performance of the machine 100.

[0060] Figs. 8A and 8B depict a perspective view of the twisting head assembly 295, in accordance with an embodiment of the present disclosure. The twisting head assembly 295 is mounted on the ratchet wheel 260 and operationally coupled to the plungers 270 such that rotational movement of the ratchet wheel 260 and the linear movement of the plunger 270 actuate the twisting head assembly 295 to perform the bundling process. The twisting head assembly 295 is used to securely capture the ends of the bundling line before twisting and to release the twisted bundle thereafter.

[0061] In an embodiment, the twisting head assembly 295 includes a base member 296 operationally coupled to the plungers 270 and the ratchet wheel 260 and a plurality of twisting members 297, each twisting member 297 mounted and extending from the base member 296. The twisting members 297 are spaced apart to define a gap 298 therebetween. The twisting members 297 are operationally coupled to the base member 296. The base member 296 is configured to transmit the twisting motion to each of the twisting members 297. In an embodiment, the plurality of twisting members 297 includes, namely, a first twisting member297a and a second twisting member 297b that are positioned on opposing sides of the base member 296, having the gap 298 therebetween. The first twisting member 297a and the second twisting member 297b are arranged to cooperate to perform a twisting or intertwining action on the bundling line. The actuation of the plunger 270 enables the twisting head assembly 295 to rotate the first and second twisting members 297a, 297b to perform the twisting action in a controlled manner. The gap 298 is configured to receive and retain opposite ends of a bundling line for twisting. In an embodiment, the gap 298 is shaped to prevent slippage of the bundling line during twisting, while ensuring smooth engagement and disengagement during operation. The structural configuration of the members 296 and 297 of the twisting head assembly 295 and their respective grooves enables efficient gripping, controlled twisting, and consistent formation of a secure bundle knot or twist in the bundling line.

[0062] In accordance with the working of the machine 100, begins with objects being placed on the platform 102 within the binder track 108. In the initial state, the binder track 108 is in the open configuration to facilitate the placement of objects. After placement, the track arms of the binder track 108 transition into their closed configuration to form a restricted passage for guiding the bundling line. The bundling line is introduced into the binder track 108 and guided toward the torsion unit 200. The power unit 106 activates the motion-generating components of both the binder track 108 and the torsion unit 200 in a coordinated manner to maintain synchronization between feeding and twisting. As the bundling line reaches the twisting head assembly 295, the drive assembly 240 begins rotating the hub 230. The motor-driven rotation of the drive gear 242 and the driven gear 243 transmits rotational motion into the hub 230, which subsequently drives the ratchet wheel 260. During the twisting cycle, the encoder 250 continuously monitors the rotational parameters of the hub 230, including angular displacement and rotational speed. The controller uses this information to determine and maintain the predetermined number of twists required to secure the bundling line. The ratchet wheel 260 is selectively controlled by the actuator 280. When the locking member 281 is inserted into the ratchet slot 261, rotational movement of the ratchet wheel 260 is arrested or modulated. When disengaged, the ratchet wheel 260 rotates freely along with the hub 230. This selective engagement mechanism ensures controlled twisting, prevents undesired reverse rotation, and guarantees consistent twist quality across multiple bundling cycles.

[0063] Concurrently, the plungers 270 move axially within the ratchet holes 262 and are aligned with the first holes 233 of the hub 230. The resilient member 274 provides controlled returnmotion and mitigates shock loads transmitted to the twisting head assembly 295 during highspeed operation. The axial displacement of the plungers 270 is directly transmitted to the twisting head assembly 295. The twisting head assembly 295 securely receives both ends of the bundling line and applies coordinated axial and rotational motion to twist the bundling line around the objects. Continued rotation of the hub 230 results in tightening of the bundling line and formation of a secure knot with precise torque and twist count control. Upon reaching the predetermined twist count, identified through encoder feedback, the actuator 280 engages the ratchet wheel 260 to halt rotation. The binder track 108 then returns to its open configuration, enabling removal of the bundled objects. After removal, the bundling machine 100 automatically resets to its initial state, ready to perform the next bundling cycle.

[0064] The integrally formed hub offers improved structural stability and operational reliability for the torsion unit. Forming the circular body and the elongate member as a single component eliminates joint interfaces, thereby removing alignment errors, tolerance accumulation, and potential points of separation. The single-piece construction reduces axial and radial runout during rotation and provides consistent support for the rotating elements. This configuration also minimizes vibration, uneven loading, and mechanical fatigue that typically arise at connection regions. As a result, the hub enables accurate torque transmission, maintains uniform twisting performance, and reduces wear on associated components, thereby supporting long-term and stable operation of the bundling machine.

[0065] The foregoing description of preferred embodiments of the present disclosure provides illustration and description, but is not intended to be exhaustive or to limit the disclosure to the precise form disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from the practice of the disclosure. No element, act, or instruction used in the description of the present disclosure should be construed as critical or essential to the invention unless explicitly described as such. Also, as used herein, the article "a" is intended to include one or more items. Where only one item is intended, the term "one" or similar language is used.

[0066] The scope of the invention is only limited by the appended patent claims. More generally, those skilled in the art will readily appreciate that all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and / or configurations will depend upon the specific application or applications for which the teachings of the present invention are used.

Claims

WE CLAIM1. A torsion unit (200) of a bundling machine (100), the torsion unit (200) comprising:a. a drive assembly (240) configured to generate and transmit torque;b. a hub (230) operatively coupled to the drive assembly (240), the hub (230) being integrally formed as a single unitary structure and including:i. a circular body (231) defining a plurality of first channels (232) extending radially outward from a central portion of the circular body (231); and ii. an elongate member (235) extending axially and integrally from the central portion of the circular body (231), the elongate member (235) comprises a plurality of second channels (236) extending along a longitudinal axis of the elongate member (235) and in fluid communication with the corresponding first channels (232) of the circular body (231).

2. The torsion unit (200) as claimed in claim 1, wherein the hub (230) is formed as a single monolithic component by machining, casting, or additive manufacturing, or any combination thereof.

3. The torsion unit (200) as claimed in claim 1, wherein the circular body (231) comprises a plurality of first holes (233) disposed radially, each first holes (233) configured to receive a corresponding plunger (270) and to store fluid therein.

4. The torsion unit (200) as claimed in claim 1, wherein the elongate member (235) comprises a plurality of holes (237) disposed on an outer surface of the elongate member (235) and extending perpendicular to and in fluid communication with the second channel (236).

5. The torsion unit (200) as claimed in claim 1, wherein the first channel (232) and the second channel (236) together define a continuous passage network configured to allow flow of the fluid through the hub (230).

6. The torsion unit (200) as claimed in claim 1, wherein the drive assembly (240) comprises: a. a motor (241) configured to generate rotational motion;b. a drive gear (242) operatively coupled to the motor (241); andc. a driven gear (243) mounted on the circular body (231) of the hub (230) and operatively coupled to the drive gear (242) to transmit the rotational motion to the hub (230).

7. The torsion unit (200) as claimed in claim 1, wherein the torsion unit (200) comprises an encoder (250) operatively coupled to the elongate member (235) of the hub (230) and configured to regulate the rotational movement of the hub (230).

8. The torsion unit (200) as claimed in claim 1, wherein the torsion unit (200) comprises;a. a ratchet wheel (260) disposed within a second housing (220) of the torsion unit (200) and coupled to the hub (230) at an opposite side of the elongate member (235); and b. an actuator (280) operatively coupled to the ratchet wheel (260) and configured to regulate the movement of the ratchet wheel (260).

9. The torsion unit (200) as claimed in claim 8, wherein the ratchet wheel (260) is coupled to the circular body (231) of the hub (230) and configured to rotate in response to the rotation of the hub (230), the ratchet wheel (260) comprises:a. a ratchet slot (261) on an outer surface thereof and configured to engage a locking member (281) of the actuator (280); andb. a plurality of ratchet holes (262) extending axially and configured to receive a respective plunger (270) and allow the axial movement of the plungers (270).

10. The torsion unit (200) as claimed in claim 9, wherein the torsion unit (200) comprises a twisting head assembly (295) mounted on the ratchet wheel (260) and operationally coupled to the plungers (270) such that rotational movement of the ratchet wheel (260) and the linear movement of the plunger (270) actuate the twisting head assembly (295).

11. The torsion unit (200) as claimed in claim 10, wherein the twisting head assembly (295) comprises:a. a base member (296) operationally coupled to the plungers (270) and the ratchet wheel (260); andb. a plurality of twisting members (297), each twisting member (297) mounted on and extending from the base member (296), the twisting members (297) being spaced apart to define a gap (298) therebetween, the gap (298) being configured to receive and retain opposite ends of a bundling line for twisting.

12. The torsion unit (200) as claimed in claim 8, wherein the torsion unit (200) comprises a first housing (210) having a first coupling surface (210a) secured with a first coupling surface (220a) of the second housing (220) by nut-bolt fixtures (219).

3. The torsion unit (200) as claimed in claim 8, wherein the second housing (220) comprises a first cavity (221a) configured to receive the ratchet wheel (260), a portion of the drive assembly (240), and a portion of the hub (230).

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