CN115701897A - Mechanism for binding bales - Google Patents

Abstract

The present disclosure discloses a mechanism for tying bales with twisted wire when collecting straw or grass from a field, the mechanism being attached to the frame of a baler. The mechanism includes: a double helical shaft having an end mounted between opposing side walls of the mechanism; a guide shaft having an end mounted between opposing side walls of the mechanism, the guiding shaft being oriented parallel to the double helical shaft; A wire guiding unit having a pawl nut configured to traverse the groove path on the double helix shaft and to follow the groove path between the ends of the double helix shaft, guiding the stranded wire as the double helix shaft rotates The formed bales are bundled evenly by the strand guiding unit.

Description

Mechanism for binding bales

technical field

The present disclosure relates to the field of agricultural equipment, and more particularly to mechanisms for strapping bales.

definition

Bale - A bale is usually a volume of hay or straw collected from a field in the form of a cylinder.

Baler - A baler is an agricultural machine used to collect straw from the field, bind it with rope/strand/plastic netting and discharge it as cylindrical bales.

Strand - Strand is defined as a thread or rope consisting of two or more strands of hemp or cotton twisted together.

Background technique

The background information that follows is related to the present disclosure and is not necessarily prior art.

The baler is used to collect straw from the field and convert the collected straw or hay or agricultural waste into cylindrical bales. After forming the bale, the bale is usually tied by means of twisted wire or enclosed in a plastic mesh. The present disclosure relates in particular to bales tied by means of strands. The baler has an automatic mechanism for tying the bales by means of strands. In prior art mechanisms, one end of the strand is conveyed through a strand guide unit with an oscillating arm. The swing arm swings about a pivot to allow the strand to traverse from one end of the bale to the other end being formed. Dispenses strands from reels mounted on balers. However, this makes the construction of conventional balers very complicated. Also, because of the vertical swinging action of the arm, the possibility of accidents increases. Movement is also slow and increases the time required for the strapping operation. In addition, the swinging action of the arm subjects the strands to wind loads and wind shear. This causes the strands to deflect from their desired position, compromising the quality of bundling the bales with the strands. Another problem is the extra time required to assemble the mechanism due to the multiple linkages and worm gear drives to obtain the desired movement while assembling the machine and before starting the strapping operation.

Accordingly, there is a need for a mechanism that can be attached to a baling machine for performing baling operations that will overcome the problems described above.

Purpose

Some of the objectives of the present disclosure, met by at least one embodiment herein, are as follows:

It is an object of the present disclosure to provide a mechanism fitted on a baler for binding bales which is compact in construction and has few moving parts.

Another object of the present invention is to provide a mechanism for strapping bales safely and reducing the number of accidents during bale forming and strapping operations.

It is yet another object of the present disclosure to provide a mechanism for strapping bales that consistently produces good quality strapped bales.

Yet another object of the present disclosure is to provide a mechanism for strapping bales that is easy to maintain and requires less maintenance time.

Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.

Contents of the invention

The present invention relates to a mechanism for attachment to the frame of a baler. The mechanism is configured for tying bales of straw or hay collected from a field with twisted wires. The mechanism includes spaced side walls. The ends of the double helical shaft are mounted between opposing side walls of the mechanism, the guide shaft has an end mounted between opposing side walls of the mechanism, the guiding shaft is oriented parallel to the double helical shaft, and the strand guiding unit has a pawl nut . The pawl nut is configured to traverse the path of the grooves on the dual helical shaft and to reciprocate between the ends of the dual helical shaft. As the twin helical shafts rotate, the pawl nut guides the strands through the strand guide unit to evenly bundle the formed bale.

In an embodiment, the double helical shaft has two helical grooves arranged along the length of the double helical shaft, the helical grooves being arranged to intersect each other at the ends of the double helical shaft.

In another embodiment, the double helical shaft consists of a right-handed thread profile and a left-handed thread profile.

In yet another embodiment, the profile of the helical grooves has varying dimensions to produce a desired packing density of the bales.

In one embodiment, a blade is configured on the mechanism to trim strands.

In another embodiment, a sensor is provided on the baler to send a signal to a motor of the strand guiding unit, the motor being configured to feed the strand into the strand guiding unit.

In yet another embodiment, rubber rollers and steel rollers are arranged on the strand guiding unit to facilitate a firm grip of the strand.

In yet another embodiment, the mechanism is configured to strap bales of different widths.

In another embodiment, a pulley coupled to the dual helical shaft is configured to drive the dual helical shaft, and the pulley is configured to be driven by a bale inside the baler.

In an embodiment, the mechanism is configured to convey strands made of a material selected from the group consisting of plastic, yarn, and fabric.

In another embodiment, a bottom non-return device is attached to the strand guide unit to supply the strands to the bale in a desired orientation. A side check device is attached to the frame of the baler to facilitate holding the strands in the closed state of the side check device and releasing the strand in the open state of the side check device.

Description of drawings

The mechanism for strapping bales of the present disclosure will now be described with the aid of the accompanying drawings, in which:

Figure 1 shows an isometric view of a mechanism for binding bales mounted on a baler according to some embodiments of the present disclosure;

Figure 2 shows an isometric view of the mechanism of Figure 1;

Figure 3 shows an isometric view of the strand guiding unit of Figure 1;

Figure 4 shows an exploded view of the strand guide unit of Figure 3;

Figure 5 shows a side view of the pawl nut of Figure 4;

FIG. 6 shows an isometric view of the mechanism of FIG. 1 together with steps of operation.

Figure 7 shows an isometric view of a mechanism for binding bales mounted on a baler according to another embodiment of the present disclosure;

Figure 8 shows an isometric side view of the side check device mechanism of Figure 7 in a closed position;

Figure 9 shows an isometric side view of the side check device mechanism of Figure 7 in an open position;

Figure 10 shows an isometric view of the bottom check device mechanism of Figure 7;

Figure 11 shows the delivery sequence of the twisted wires according to the embodiment of Figure 7;

Figure 12 shows the state where the twisted wire is released from the side non-return device;

Figure 13 shows a side view of the baler according to the embodiment of Figure 7;

Figure 14 shows the side view of Figure 7 and the operation of the side non-return device lever, the side non-return device link and the bale density adjustment lever;

Figure 15 shows the state in which the strands start to wrap around the bale as the strand guiding unit advances towards the end;

FIG. 16 shows a state in which the strand guide unit reciprocates and reaches the opposite end;

Figure 17 shows the side non-return device in the released state;

Figure 18 shows the side non-return device in a held state;

Figure 19 shows a state where the bottom non-return device interacts with the side non-return device;

Figure 20 shows a state where the bale is in a fully wound position and the strands are in a trimmed condition;

Figure 21 shows another embodiment of a side non-return device according to a further embodiment of the present disclosure;

Figure 22 shows the side non-return device of Figure 21 in an open position; and

Figure 23 shows the side non-return device of Figure 21 in a closed position.

List of reference signs

1000-baler

100, 100'-body

110-baffle

120-sensor

130 - Side check device rod

140-side check device link

150-bale density adjustment rod

210-Pulley

220-side frame

230-Double helix shaft

250 - guide shaft

260-side mounting plate

270-Blade

280-Stop

290-motor

300, 500-stranded wire guide unit

510-bottom check device

512 - Latch block

514-spring plate

516 - spring latch

520, 620 - side check device

522, 622 - opening lever

524, 624 - closing lever

526-Roll

310- Stranded wire guide housing

320 - pawl nut

330 - Upper cover for housing

340-rubber roller

350 - guide pin

360-spring

370-Retainer

380-steel roll

390 - Holder for rubber rollers

400-Strand wire guide roller

410-support block

420 - Retention Clamp

430-Bushing

440-spring

450-stop clamp

460-fixture housing

470-Pipeline

626-hook

Detailed ways

Embodiments of the present disclosure will now be described with reference to the accompanying drawings.

These embodiments are provided so that these embodiments will be thorough and will fully convey the scope of the present disclosure to those skilled in the art. Numerous details are set forth involving specific components and methods in order to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that the details provided in the examples should not be construed to limit the scope of the disclosure. In some embodiments, well-known processes, known device structures, and known technologies are not described in detail.

The terms used in the present disclosure are for the purpose of explaining specific embodiments only, and these terms should not be construed as limiting the scope of the present disclosure. As used in this disclosure, the forms "a", "an" and "the" may also be intended to include plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "comprising" and "having" are open-ended transitional phrases and thus specify the presence of stated features, elements, modules, units and/or parts but do not prohibit the presence of one or more other features , the presence or addition of elements, parts and/or combinations thereof. The specific order of steps disclosed in the methods and processes of the present disclosure should not be construed as necessarily requiring them to perform as described or illustrated. It should also be understood that additional or alternative steps may be employed.

When an element is referred to as being "mounted on," "bonded to," "connected to," or "coupled to" another element, it can be directly on, engaged, connected, or coupled to the other element. another element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed elements.

Terms such as "inner," "outer," "below," "beneath," "under," "above," "on," etc. may be used in this disclosure to describe relationships between the various elements depicted in the figures.

Referring to Figures 1 to 23, a mechanism 100 for strapping bales is shown. The mechanism 100 is fitted to the baler 1000 , which is typically mounted on top of the baler 1000 . The mechanism 100 has side mounting plates 260 on both sides so that the mechanism 100 is attached between the side walls of the frame of the baler 1000, typically with fasteners. The mechanism 100 includes a double helical shaft 230 , wherein the ends of the double helical shaft are mounted between opposing side walls of the mechanism 100 . The side walls of the mechanism 100 are in the form of a mounting plate 260 on one side and a frame 220 on the other. The dual helical shaft 230 includes grooves extending along the length of the dual helical shaft 230 . The double helical shaft 230 has a combination of right-handed and left-handed threads. The path of the grooves on the double helix shaft 230 is in the form of a helix that travels from one end of the shaft to the other. The double helical profiles on the double helical shaft 230 meet at the ends of the double helical shaft 230 so that automatic reversal of motion is obtained by traversing the object following this double helical profile. Similarly, the guide shaft 250 is mounted between the side walls of the mechanism 100 parallel to the double helical shaft 230 . The mechanism 100 also includes a strand guide unit 300 configured to oscillate between the ends of the double helical shaft 230 and the guide shaft 250 . The strand guide unit 300 maintains contact with both the double helix shaft 230 and the guide shaft 250 . The strand guiding unit 300 oscillates linearly in response to the movement of the double helical shaft 230 . The linear oscillatory movement of the strand guide unit 300 along the double helix shaft 230 and the guide shaft 250 facilitates a compact construction of the mechanism 100 .

In another embodiment, the profile of the helical grooves has varying dimensions to produce a desired packing density of the bales.

The strand guide unit 300 also includes a strand guide housing 310, a pawl nut 320, an upper cover 330 for the strand guide housing 310, a rubber roller 34, a guide pin 350, a spring 360, a retainer 370, a steel roller 380 And a holder 390 for the rubber roller. In another embodiment, the roller 34 is made of steel with protrusions to facilitate a secure grip. The strand guide housing 310 is typically cast or welded, which facilitates retaining and positioning the detent nut 320 . The rubber rollers 340 and steel rollers 380 facilitate maintaining the pressure delivered to the strands of the bale in order to achieve consistency in bundling the bale. Springs 360 attached to steel roller 380 and rubber roller 340 help maintain the desired contact pressure between the rollers. The rubber roller 340 is a roller molded by rubber on a metal roller. The steel roller 380 has a grip provided by machining or knurling. The pulley 210 is coupled to the double helix shaft 230, which facilitates providing drive to the double helix shaft 230, while the pulley 210 itself is driven by the bale shaft. A blade 270 is provided in the middle of the mechanism 100 to trim the strands when the binding of the bale is complete.

Another mechanism is provided for accommodating bales of different widths having a length of 1 m and above. A shaft 400 configured to guide the strand is mounted on a support block 410 and fed through a hole provided in a duct 470 . When the strand guiding unit 300 reaches one end, the stop provided on the frame contacts the stop clamp and will move towards the direction of the strand, thereby feeding at the edge of the bale. Upon return, the spring 440 will maintain its position. Similarly, oversized bales of 1m or more can be bundled using shorter twin helix shafts.

In another embodiment, mechanism 100 is configured to deliver strands made of a material selected from the group consisting of plastic, yarn, and fabric.

The operation of the mechanism 100 will now be explained with reference to FIGS. 1 to 6 . The baler 1000 has a baffle 110 through which formed bales exit. The proximity sensor 120 installed near the shutter 110 senses the displacement of the shutter 110 and facilitates sending a signal to turn on the motor 290 . In another embodiment of the present disclosure, sensor 120 is a dedicated bale density monitoring mechanism/sensor. The motor 290 facilitates the rotating bale feed of the strands towards the inside of the baler. The strand conveyed through the strand guide unit 300 snaps into a rolled bale. The rolling motion of the bale is transferred to the pulley 210 via the strands that pass through the pulley. Double helical shaft 230 is rotationally coupled to pulley 210 . The pawl 320 traverses the double helix profile engraved on the double helix shaft 230 from one end of the double helix shaft 230 to the other end. Upon reaching the end, the pawl nut 320 tilts to a reverse direction and the movement continues until the blade 270 disposed at the appropriate distance in the middle of the shaft 230 cuts the strand. Then, when the drive from the bale is lost while the strand is cut by the blade 270, the strand guide unit 300 stops, thereby completing the binding process of the bale. This linear oscillating movement of the strand guide unit 300 contributes to reducing the possibility of accidents, since there is no swing arm in the case of the prior art.

Referring to Fig. 6, the bundling process of bales is summarized in the following steps. A signal is received from a proximity sensor 120 mounted on the apron of the baler 1000 . The motor 290 on the strand guiding unit 300 is energized. The mechanism 100 prepares the strand compressed between the steel roller 380 and the rubber roller 340 inside the strand guide housing 310 . This provides a firm grip on the stranded wires. The strands begin to feed towards the bale inside the baler chamber. When the twisted wire tied the bale, the motor 290 stopped working. The strand is pulled from a reel installed on the baler 1000 , and the strand guide unit 300 starts moving by rotating a pulley that transfers the strand connected to the double helix shaft 230 . The strands are distributed across the entire width of the bale. The strand guiding unit 300 starts to traverse back and forth in the direction of the double helical groove on the double helical shaft 230 . The strand guiding unit 300 continues across the shaft in the direction of the double helical groove. While reciprocating in the direction of the double helical groove, the strand tries to push the blade in the axial direction of the shaft 230, but the stopper 280 further restricts the rotation of the blade 270, which causes trimming of the strand. The bale is discharged through the baffle of the baler. Thus, the reciprocating motion involved in the operation of the mechanism 100 continues to produce good quality bales because the strands do not lose their orientation. Mechanism 100 facilitates maintenance and maintenance.

In another embodiment of the present disclosure, a mechanism 100' is shown in Figures 7 to 19, wherein the bale strapping operation is performed by mechanical means. The strand guiding unit 500 comprises a bottom non-return device 510 . Bottom check device 510 is a device that keeps the strands in a tied condition when fed into a bale. Bottom check device 510 includes latch block 512 , spring plate 514 and spring latch 516 . The spring latch 516 includes a coil spring that facilitates unidirectional transfer of the twisted wire from one side of the bottom check device to the other. Side check devices 520 are attached to the ends of the side walls of the mechanism 100'. Side check device 520 is a device that includes a bottom plate and a top plate that are hinged together to form a latch. The bottom and top plates hold the pair of rollers together in the closed position. Side check device 520 also includes a pair of rods. The opening lever 522 is displaced in the opposite direction to the closing lever 524 thereby separating the rollers that open the latch, as shown in FIG. 9 .

The operation of the second embodiment will be explained with reference to FIGS. 7 to 20 . When the baler starts to work, the twisted wire is delivered, as shown in Figure 11. The strand is received from a location external to the baler 1000 to travel to position b on top rollers fitted on the strand guide unit 300 . The strand is advanced to position c on the bottom roller mounted on the strand guide unit 300 directly below the top roller. The strand is conveyed further into the roller 526 of the side non-return device 520 at position d. The strand is conveyed from the roller 526 at position d to position e, which is the spring latch 516 of the bottom non-return device 510 . When the formed bale attains the desired density, a set of bars provided on the baler is displaced. The side non-return device rod 130, the side non-return device link 140 and the bale density adjustment rod 150 move, as shown in FIG. 14 . When the side check device 520 opens, the strand is released and begins to fall towards the rotating bale, as shown in FIG. 12 . The released strand is then captured by the rotating bale, and the strand guide unit 500 begins to move towards the right as the drive is transmitted from the formed bale through the strand to the strand pulley, as shown in FIG. 13 . During travel to the opposite side wall of the mechanism 100' (as shown in Figure 15), the strands automatically lock with the bottom non-return device 510. The bottom check device 510 facilitates feeding the strands in a straight line and eliminates any slack formation while tying the bales. The start of movement of the double helical shaft 230 facilitates the reciprocating movement of the strand guiding unit 500, as shown in FIG. 16 . The strands reach the side non-return device 520, which is held open by the bale density adjustment lever 150 as shown in FIG. Further advancement of the strand guide unit 500 towards the end of the side non-return device 520 causes a displacement of the closing lever 524 of the side non-return device 520 . This results in a closed condition of the side non-return device 520, thereby capturing the strand, as shown in FIGS. 18 and 19 . When the strand guiding unit 500 reverses its direction to move towards the center of the bale, the strand is trimmed by the blade and the drive by the strand is stopped. This will cause the strand guide unit 500 to stop and restrict any further movement, which signals the end of the strapping process of the bales thus formed in the strapping machine 1000 , as shown in FIG. 20 . When a bale is discharged, the bale density adjustment lever 150 and the side non-return device 520 are configured to return to their original positions. The cycle is repeated for the next bale.

In yet another embodiment of the present disclosure, a side check device 620 as shown in FIGS. 21-23 includes a hook 626 . The hook 626 is formed in a circular shape. A hook 626 is located in the stationary closing lever 624 . When the density of the bale formed in the baler reaches a desired level, the hooks 626 open back and the cover pushes the strands towards the rotating bale. When the strand tying the bale reaches the hook 626 it travels to the side due to the circular shape and is caught by the hook 626 when the strand guiding unit 500 approaches the side non-return device 620 . When the strand guiding unit 500 reverses its direction to move away from the side non-return device 500, the strand is jammed, as shown in FIGS. 22 and 23 .

The foregoing description of the embodiments has been provided for purposes of illustration and is not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but rather are interchangeable. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are considered within the scope of the disclosure.

skill improved

The present disclosure described herein above has several technical advantages, including but not limited to that achieved by the mechanism for strapping bales:

Has fewer moving parts and is compact in construction;

Provides increased security in the production of bales;

Improvement of the binding quality of bales; and

·Easy to maintain and maintain.

· Do not allow dust to accumulate.

The foregoing disclosure has been described with reference to the appended embodiments, which do not limit the scope and bounds of the present disclosure. The descriptions are provided by way of example and illustration only.

The embodiments herein and their various features and advantageous details are explained with reference to the non-limiting examples in the following description. Descriptions of well-known components and processing techniques are omitted so as not to unnecessarily obscure the embodiments herein.

The foregoing description of specific embodiments so fully reveals the general nature of the embodiments herein that others can easily modify and/or adapt these specific embodiments for various applications by applying current knowledge without departing from the general concept. application, and therefore such adaptations and modifications should and are intended to be understood as being within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology and terminology employed herein are for the purpose of description rather than limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

While considerable emphasis has been placed herein on the components and component parts of the preferred embodiment, it should be understood that many embodiments can be formed and changes can be made to the preferred embodiment without departing from the principles of the disclosure. These and other variations in the preferred embodiment and other embodiments of the present disclosure will be apparent to those skilled in the art from the disclosure herein, so it should be clearly understood that the foregoing descriptive matter should be construed as illustrative only of the present disclosure rather than limit.

Claims (12)

1. A mechanism (100, 100 ') for binding bales with twine when collecting straw or hay from a field, the mechanism (100, 100 ') being attached to a frame (220) of a binding machine (1000), the mechanism (100, 100 ') comprising:

-a double helical shaft (230) having ends mounted between opposite side walls of said mechanism (100, 100');

-a guide shaft (250) having an end mounted between opposite side walls of said mechanism (100, 100'), said guide shaft (250) being oriented parallel to said twin screw shaft (230);

-a strand guide unit having a pawl nut configured to traverse a groove path on the twin screw shaft (230) and follow the groove path between the ends of the twin screw shaft (230), guiding strands through the strand guide unit as the twin screw shaft (230) rotates to evenly bundle the formed bale.

2. The mechanism (100, 100') according to claim 1, wherein the twin-screw shaft (230) has two helical grooves arranged along the length of the twin-screw shaft (230), the helical grooves being arranged to intersect each other at the ends of the twin-screw shaft (230).

3. The mechanism (100, 100') according to claim 1, wherein the twin screw shaft (230) is constituted by a right-hand thread profile and a left-hand thread profile.

4. The mechanism (100, 100') of claim 1, wherein the profile of the spiral groove has varying dimensions to produce a desired binding density for a bale.

5. The mechanism (100, 100 ') of claim 1, wherein a blade (270) is configured on the mechanism (100, 100') to trim strands.

6. The mechanism (100, 100') of claim 1, wherein a sensor (120) is provided on the baler (1000) to send a signal to a motor (290) of the strand guide unit (300, 500), the motor (290) being configured to feed strands into the strand guide unit (300, 500).

7. Mechanism (100, 100') according to claim 1, wherein a rubber roller (340) or a steel roller (380) is provided with protrusions for gripping and steel rollers are arranged on the strand guiding unit (300, 500) to facilitate a firm gripping of the strands.

8. The mechanism (100, 100 ') according to claim 1, wherein the mechanism (100, 100') is configured to bundle bales of different widths.

9. The mechanism (100, 100') of claim 1, wherein a pulley (210) coupled to the twin-screw shaft (230) is configured to drive the twin-screw shaft (230), and the pulley (210) is configured to be driven by the baler.

10. The mechanism (100, 100 ') according to claim 1, wherein the mechanism (100, 100') is configured to convey strands made of a material selected from the group consisting of plastic, yarn, and fabric.

11. Mechanism (100, 100') according to claim 1, wherein a bottom non-return device (510) is attached to the strand guide unit (500) to supply the strands to the bale in a desired orientation.

12. Mechanism (100, 100') according to claim 1, wherein a side check device (520) is attached to the frame (220) of the baler (1000) to facilitate holding the strand in a closed state of the side check device (520) and releasing the strand in an open state of the side check device (520).

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