WO2021224672A1 - Mécanisme de ficelage de balles - Google Patents

Mécanisme de ficelage de balles Download PDF

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Publication number
WO2021224672A1
WO2021224672A1 PCT/IB2020/059966 IB2020059966W WO2021224672A1 WO 2021224672 A1 WO2021224672 A1 WO 2021224672A1 IB 2020059966 W IB2020059966 W IB 2020059966W WO 2021224672 A1 WO2021224672 A1 WO 2021224672A1
Authority
WO
WIPO (PCT)
Prior art keywords
twine
double helix
shaft
helix shaft
guide unit
Prior art date
Application number
PCT/IB2020/059966
Other languages
English (en)
Inventor
Narayanankutty Pramod Perinchery
Original Assignee
Ashlyn, Antony
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ashlyn, Antony filed Critical Ashlyn, Antony
Priority to JP2022567481A priority Critical patent/JP2023524557A/ja
Priority to CN202080102163.4A priority patent/CN115701897A/zh
Publication of WO2021224672A1 publication Critical patent/WO2021224672A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/08—Details
    • A01F15/14—Tying devices specially adapted for baling presses
    • A01F15/145—Twine knotters

Definitions

  • the present disclosure relates to the field of agricultural equipment and more specifically to a mechanism for tying bales.
  • Bale - A bale is typically a volume of dry grass or straw collected from an agricultural field in the form of a cylinder.
  • Baler Machine - A baler machine is an agricultural machine used for collecting straw from field, tie it with rope/twine/plastic net and eject it as cylindrical bales.
  • Twine - A twine is defined as a thread or string consisting of two or more strands of hemp or cotton twisted together.
  • Baler machines are used for collecting straw from agricultural fields and convert the collected straw or hay or agricultural refuse into cylindrical bales. After the bales are formed, the bales are tied typically with the help of twine or enclosed in a plastic net.
  • the present disclosure particularly deals with bales which are tied with the help of twine.
  • Baler machines have automatic mechanisms for tying the bales with the help of twine. In the mechanisms of the prior art, one end of a twine is routed through a twine guide unit having a swinging arm. The swinging arm swings about a pivot to allow the twine to traverse from one end of the bale to the other which is being formed.
  • the twine is dispensed from a reel mounted on the baler machine.
  • this makes the construction of the conventional baler machines very complex.
  • because of the vertical swinging action of the arm there is an increase in the probability of accidents. The movement is also slow, and increases the time required for the tying operation.
  • the swinging action of the arm subjects the twine to wind loads and wind shear. This causes the twine to deflect from its desired position, thereby compromising the quality of tying of the bale with the twine.
  • Another issue is that additional time is required to assemble the mechanism due to numerous linkages and worm gear transmission, to attain the desired motion while assembling the machine as well as before the start of the tying operation.
  • An object of the present disclosure is to provide a mechanism to be fitted on to a baler machine for tying bales, said mechanism being compact in construction and having less moving parts.
  • Another object of the present disclosure is to provide a mechanism for tying bales safely and reducing the number of accidents during the bale formation and tying operation.
  • Still another object of the present disclosure is to provide a mechanism for tying bales which consistently produces good quality of tied bales.
  • Yet another object of the present disclosure is to provide a mechanism for tying bales which offers ease of maintenance and servicing time is less.
  • the present disclosure relates to a mechanism for attaching to the frame of a baler machine.
  • the mechanism is configured for tying a bale, with a twine, straw or hay that is being collected from a field.
  • the mechanism comprises spaced apart sidewalls.
  • the ends of a double helix shaft are mounted between opposite sidewalls of the mechanism, a guide shaft with ends mounted between opposite sidewalls of the mechanism, the guide shaft being oriented parallel to the double helix shaft and a twine guide unit having a pawl nut.
  • the pawl nut is configured to traverse the grooved path on the double helix shaft and reciprocate between the ends of the double helix shaft.
  • the pawl nut guides a twine through the twine guide unit to tie a formed bale uniformly.
  • the double helix shaft has two helically profiled grooves configured along the length of the double helix shaft, the helically profiled grooves configured to intersect each other at the ends of the double helix shaft.
  • the double helix shaft consists of right hand threaded profile and left hand threaded profile.
  • the profiles of the helical grooves have varying dimensions to produce the desired tying density of the bales.
  • a blade is configured on the mechanism to trim the twines.
  • a sensor is provided on the baler machine to signal a motor of the twine guide unit, the motor configured to feed the twine into the twine guide unit.
  • a rubber roller and a steel roller is configured on the twine guide unit to facilitate firm grip of the twine.
  • the mechanism is configured to tie varying width of the bales.
  • a pulley coupled to the double helix shaft is configured to drive the double helix shaft, and the pulley configured to be driven by the bale inside the baler machine.
  • the mechanism is configured to route the twines made of a material selected from the group consisting of plastic, yarn, and fabric.
  • a bottom backstop device is attached to the twine guide unit to supply the twine to the bale at a desired orientation.
  • a side backstop device is attached to the frame of the baler machine to facilitate holding of the twine in a closed state of the side backstop device and releasing of the twine in an open state of the side backstop device.
  • Figure 1 shows an isometric view of a mechanism for tying bales installed on a baler machine, according to some embodiments of the present disclosure
  • Figure 2 shows an isometric view of the mechanism of Figure 1 ;
  • FIG. 3 shows an isometric view of the twine guide unit of Figure 1 ;
  • Figure 4 shows an exploded view of the twine guide unit of Figure 3;
  • Figure 5 shows a side view of the pawl nut of Figure 4.
  • Figure 6 shows an isometric view of the mechanism of Figure 1 with the operation steps.
  • Figure 7 shows an isometric view of the mechanism for tying bales installed on a baler machine, according to another embodiment of the present disclosure
  • Figure 8 shows an isometric view of a side backstop device mechanism of Figure 7 in a closed state
  • Figure 9 shows an isometric view of a side backstop device mechanism of Figure 7 in an open state
  • Figure 10 shows an isometric view of a bottom backstop device mechanism of Figure 7 ;
  • Figure 11 shows a routing sequence of a twine in accordance with the embodiment of Figure 7;
  • Figure 12 shows a state in which the twine is released from the side backstop device
  • Figure 13 shows a side view of the baler machine, in accordance with the embodiment of Figure 7
  • Figure 14 shows a side view of Figure 7 with operation of the side backstop device lever, the side backstop device linkage and the bale density adjustment lever;
  • Figure 15 shows a state in which the twine starts to wrap the bale as the twine guide unit advances towards an end
  • Figure 16 shows a state in which the twine guide unit reciprocates and reaches the opposite end
  • Figures 17 shows the side backstop device in a released state
  • Figure 18 shows the side backstop device in a held state
  • Figure 19 shows a state in which the bottom backstop device interacts with the side backstop device
  • Figure 20 shows a state in which the bale is completely wrapped position and the twine is in a trimmed condition
  • Figure 21 shows another embodiment of a side backstop device, in accordance with still another embodiment of the present disclosure.
  • Figure 22 shows the side backstop device of Figure 21 in an open state
  • Figure 23 shows the side backstop device of Figure 21 in a closed state.
  • Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail. The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure.
  • the mechanism 100 is fitted on to a baler machine 1000 which is typically installed on the top end of the baler machine 1000.
  • the mechanism 100 has side mounting plates 260 on both sides, such that the mechanism 100 is attached between side walls of the frame baler machine 1000, typically with fasteners.
  • the mechanism 100 comprises a double helix shaft 230 with the ends of the double helix shaft mounted between the opposite sidewalls of the mechanism 100.
  • the sidewalls of the mechanism 100 are in the form of a mounting plate 260 on one side and a frame 220 on the other side.
  • the double helix shaft 230 consists of grooves running along the length of the double helix shaft 230.
  • the double helix shaft 230 has a combination of right hand threads and left hand threads.
  • the path of the grooves on the double helix shaft 230 is in the form of a helix traveling from one end of the shaft to the other.
  • the double helix profile on the double helix shaft 230 meets at the ends of the double helix shaft 230, such that an automatic reversal of motion is obtained by a traversing object following this double helix profile.
  • a guide shaft 250 is mounted parallel to the double helix shaft 230 between the side walls of the mechanism 100.
  • the mechanism 100 further comprises a twine guide unit 300 which is configured to oscillate between the ends of the double helix shaft 230 as well as the guide shaft 250.
  • the twine guide unit 300 maintains contact with both the double helix shaft 230 as well as the guide shaft 250.
  • the twine guide unit 300 oscillates linearly in response to motion of the double helix shaft 230.
  • the linear oscillatory motion of the twine guide unit 300 along the double helix shaft 230 as well as the guide shaft 250 facilitates compact construction of the mechanism 100.
  • the profile of the helical grooves has varying dimensions to produce the desired tying density of the bales.
  • the twine guide unit 300 further comprises a twine guide housing 310, a pawl nut 320, an upper cover 330 for the twine guide housing 310, a rubber roller 34, a guide pin 350, a spring 360, a holder 370, a steel roller 380 and a holder 390 for the rubber roller.
  • the roller 34 is made of steel having projections to facilitate firm grip.
  • the twine guide housing 310 is typically cast or fabricated which facilitates holding and positioning of the pawl nut 320.
  • the rubber roller 340 and the steel roller 380 facilitate maintaining of pressure on the twine being routed to the bale so as to achieve consistency in tying of the bales.
  • the rubber roller 340 is a roller which is molded by rubber on metal roller.
  • the steel roller 380 has grips provided through machining or knurling.
  • a pulley 210 is coupled to the double helix shaft 230 which facilitates providing the drive to the double helix shaft 230, while the pulley 210 being itself driven by a bale shaft.
  • a blade 270 is provided midway on the mechanism 100 to trim the twines once tying of the bales is completed.
  • a shaft 400 is configured to guide the twine, which is mounted on a bearing block 410 and fed through a hole provided in a piping 470.
  • a stopper provided on the frame touches a stopper clamp and will move towards the direction of twine, thus feeding at edges of the bale.
  • springs 440 will retain its position.
  • a lm or an oversized bale above lm can be tied using a shorter double helix shaft.
  • the mechanism 100 is configured to route the twines made of a material selected from the group consisting of plastic, yarn, and fabric.
  • the baler machine 1000 has a tailgate 110 through which a formed bale exits.
  • a proximity sensor 120 mounted near the tailgate 110 senses the displacement of the tailgate 110 and facilitates signaling of a motor 290 to be turned ON.
  • the sensor 120 is a dedicated bale density monitoring mechanism/sensor.
  • the motor 290 facilitates the twine to feed towards the rotating bale inside the baler machine.
  • the twine routed through the twine guide unit 300 gets stuck into the rolling bale.
  • the rolling motion of the bale gets transferred to the pulley 210 via the twine routed through the pulley.
  • the double helix shaft 230 rotates being coupled to the pulley 210.
  • the pawl 320 traverses the double helix profile carved on the double helix shaft 230 from one end of the double helix shaft 230 to the other. On reaching the end, the pawl nut 320 tilts to the reverse direction and the motion continues, until the blade 270 provided at a suitable distance midway of the shaft 230 cuts the twine.
  • the twine guide unit 300 then stops, as the twine losses the drive from bale on getting cut by the blade 270, thereby completing the tying procedure of the bale.
  • This linear oscillatory motion of the twine guide unit 300 facilitates reduction in probability of accidents taking place, due to the absence of a swinging arm as in the case of the prior art.
  • the tying procedure of the bale is summarized in the below steps with reference to Figure 6.
  • the signal from the proximity sensor 120 is received that is mounted on the tailgate of the baler machine 1000.
  • the electric motor 290 on the twine guide unit 300 is energized.
  • the mechanism 100 that is primed with the twine which is compressed between the steel roller 380 and the rubber roller 340 inside the twine guide housing 310. This provides a firm grip of the twine.
  • the twine starts feeding towards the bale inside the baler machine chamber.
  • the electric motor 290 stops working.
  • the twine is pulled from a reel mounted on the baler machine 1000 and starts moving the twine guide unit 300 by rotating the pulley routed with twine connected to the double helix shaft 230.
  • the twine is distributed over the entire width of the bale.
  • the twine guide unit 300 starts traversing to and fro in the direction of the double helical profiled grooves on the double helix shaft 230.
  • the twine guide unit 300 continues to traverse the shafts along the direction of the double helical profile grooves. While reciprocating in the direction of the double helical profiled grooves, the twine tries to push the blades along the axial direction of the shaft 230, but a stopper 280 restricts rotation of the blade 270 any further, which causes trimming of the twine.
  • the bale is ejected through the tailgate of the baler machine.
  • the reciprocating motion involved in the working of the mechanism 100 consistently produces good quality of bales, as the twine is free from getting disoriented.
  • the mechanism 100 facilitates ease of maintenance and servicing.
  • mechanism 100’ is shown in figures 7-19, in which the bale tying operation is carried out by mechanical means.
  • the twine guide unit 500 comprises a bottom backstop device 510.
  • the bottom backstop device 510 is a device to hold the twine in a taught condition when feeding to the bale.
  • the bottom backstop device 510 includes a latch block 512, a spring plate 514 and a spring latch 516.
  • the spring latch 516 includes a coil spring which facilitates routing of the twine from one side to the other side of the bottom backstop device unidirectionally.
  • a side backstop device 520 is attached to an end of the sidewalls of the mechanism 100’.
  • the side backstop device 520 is a device including a bottom plate and a top plate hinged together to form a latch.
  • the bottom and top plate holds a pair of rollers together in a closed position.
  • the side backstop device 520 further includes a pair of levers.
  • the opening lever 522 is displaced in an opposite direction to the closing lever 524, thus separating the rollers which opens the latch as shown in figure 9.
  • the twine is routed as shown in figure 11.
  • the twine is received at the location from the outside of the baler machine 1000 to pass on to a location b on a top roller fitted on the twine guide unit 300.
  • the twine is made to pass on to a location c on a bottom roller fitted on the twine guide unit 300 which is located just below the top roller.
  • the twine is further routed into the rollers 526 of the side backstop device 520 at location d. From the rollers 526 at location d, the twine is routed to location e which is the spring latch 516 of the bottom backstop device 510.
  • a set of levers provided on the baler machine are displaced.
  • the side backstop device lever 130, the side backstop device linkage 140 and the bale density adjustment lever 150 move as shown in figure 14.
  • the side backstop device 520 opens, the twine is released and the twine starts falling towards the rotating bale as shown in figure 12.
  • the released twine is then trapped by the rotating bale and the twine guide unit 500 starts to move towards right, since the drive is transferred by the formed bale to the twine pulley thru twine, as shown in figure 13.
  • the twine automatically gets locked with the bottom backstop device 510.
  • the bottom backstop device 510 facilitates feeding of the twine in a straight line as well as to eliminate any slack formation while tying of the bale.
  • the twine guide unit 500 reciprocates as facilitated by the double helix shaft 230 starts moving as shown in figure 16.
  • the twine reaches the side backstop device 520 as shown in figure 17, which is in an open state maintained by the bale density adjustment lever 150.
  • a further advancement of the twine guide unit 500 towards the extremity of the side backstop device 520 causes displacing of the closing lever 524 of the side backstop device 520. This results in a closed state of the side backstop device 520 thereby trapping the twine, as shown in figures 18 and 19.
  • the twine guide unit 500 reverses its direction to move towards the center of the bale, the twine is trimmed by the blade 270, and the drive through the twine stops. This will lead to stoppage of the twine guide unit 500 and restriction of movement any further, which signals the end of tying process of the bale so formed in the baler machine 1000, as shown in figure 20.
  • the bale density adjustment lever 150 and the side backstop device 520 is configured to return to its original position. This cycle is repeated for the next bale.
  • the side backstop device 620 as shown in figures 21-23 includes a hook 626.
  • the hook 626 is formed in a circular shape.
  • the hook 626 is situated in a closing lever 624 which is stationary.
  • the hook 626 opens backward and the cover plate pushes the twine towards the rotating bale.
  • the twine caught by the bale reaches the hook 626, it passes to the side due to the circular shape and gets trapped by the hook 626 when the twine guide unit 500 approaches the side backstop device 620.
  • the twine guide unit 500 reverses its direction to move away from the side backstop device 500, the twine gets stuck as shown in figures 22-23.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Basic Packing Technique (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

La présente invention concerne un mécanisme pour ficeler une balle avec une ficelle lorsque la paille ou l'herbe est collectée à partir d'un champ, le mécanisme étant fixé au cadre d'une presse à balles. Le mécanisme comprend un arbre à double hélice dont les extrémités sont montées entre des parois latérales opposées du mécanisme, un arbre de guidage dont les extrémités sont montées entre des parois latérales opposées du mécanisme, l'arbre de guidage étant orienté parallèlement à l'arbre à double hélice et une unité de guidage de ficelle ayant un écrou à cliquet, l'écrou à cliquet étant conçu pour traverser le trajet rainuré sur l'arbre à double hélice et suivre le trajet rainuré entre les extrémités de l'arbre à double hélice, lors de la rotation de l'arbre à double hélice pour guider une ficelle dans l'unité de guidage de ficelle pour ficeler de manière uniforme une balle formée.
PCT/IB2020/059966 2020-05-07 2020-10-23 Mécanisme de ficelage de balles WO2021224672A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022567481A JP2023524557A (ja) 2020-05-07 2020-10-23 ベールを結束するための機構
CN202080102163.4A CN115701897A (zh) 2020-05-07 2020-10-23 用于对捆包进行捆扎的机构

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202041019383 2020-05-07
IN202041019383 2020-05-07

Publications (1)

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WO2021224672A1 true WO2021224672A1 (fr) 2021-11-11

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ID=78467647

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PCT/IB2020/059966 WO2021224672A1 (fr) 2020-05-07 2020-10-23 Mécanisme de ficelage de balles

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JP (1) JP2023524557A (fr)
CN (1) CN115701897A (fr)
WO (1) WO2021224672A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386561A (en) * 1980-05-29 1983-06-07 Deere & Company Tying device for cylindrical-bale-forming baler
EP0086205B1 (fr) * 1981-08-24 1985-12-11 Massey-Ferguson Services N.V. Procede et dispositif permettant de fournir de la ficelle a un dispositif noueur de balles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386561A (en) * 1980-05-29 1983-06-07 Deere & Company Tying device for cylindrical-bale-forming baler
EP0086205B1 (fr) * 1981-08-24 1985-12-11 Massey-Ferguson Services N.V. Procede et dispositif permettant de fournir de la ficelle a un dispositif noueur de balles

Also Published As

Publication number Publication date
JP2023524557A (ja) 2023-06-12
CN115701897A (zh) 2023-02-14

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