A net winding device for a bale press

Abstract

The present application belongs to the technical field of baling press, and discloses a net winding device of round bale baling press, which comprises two symmetrically and interval arranged mounting plates, a rubber roller rotatably arranged between the two mounting plates, a brake disc fixedly arranged at one end of the rubber roller and penetrating through the mounting plate, a brake actuating mechanism arranged on the mounting plate and capable of acting on the brake disc, one end of the brake actuating mechanism elastically connected to the mounting plate through an elastic assembly, a driving rod slidingly arranged on the mounting plate and close to the brake disc, the driving end of the brake actuating mechanism in contact with one end of the driving rod, a net cutting knife assembly rotatably arranged at both ends of the rubber roller in the two mounting plates, and one end of the driving rod in contact with the brake actuating mechanism simultaneously hinged to the net cutting knife assembly. The present application can optimize the tension of the baling net in the round bale baling press, improve the resetting efficiency of the cutting knife, solve the key defect that the baling net adhered with soil cannot be cleaned, and improve the use effect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of baling machines, in particular to a net winding device of a round bale baling machine. BACKGROUND

[0002] In the prior art, the recycling of crop straws such as straws is an important link to realize the sustainable development of agriculture. As a key equipment for straw recycling and processing, the round bale baling machine can compress loose straws into regular bales, greatly improving the convenience of straw transportation and storage. As a core component of the round bale baling machine, the performance of the net winding device directly determines the quality of the bale forming, the baling efficiency and the economic benefits of subsequent operations. Therefore, the structural optimization of the net winding device has always been the focus of research in the field of agricultural machinery.

[0003] Currently, the net winding structure of the round bale baling machine still has many technical defects to be solved in actual field operation. These defects not only affect the operation efficiency and bale quality of the baling machine, but also increase the use cost of farmers, limit its popularization and application in complex agricultural environments, and the specific problems are as follows:

[0004] Firstly, the existing round bale baling machine has poor bale net forming quality and low bale pass rate. In the traditional net winding structure of the round bale baling machine, the roller shaft for conveying the bale net generally lacks effective braking and speed limiting mechanism. During the bale wrapping process, the bale can drive the roller shaft to rotate, and the roller shaft without braking effect is easy to be dragged by the bale. In order to avoid the bale net being pulled too much, the bale net can only be in a relatively relaxed state. This state not only causes the remaining bale net to be of different lengths after the net cutter cuts the bale net, but also makes the excess remaining bale net easy to be brought into the pressing chamber, causing the bale net to be uneven and redundant during the wrapping of the next bale, ultimately leading to the failure of bale forming, and significantly reducing the forming rate of the bale. At the same time, the relaxed bale net cannot closely adhere to the surface of the bale during the wrapping process, and the appearance of the formed bale is messy, which is not conducive to subsequent stacking and transportation.

[0005] Secondly, the existing round bale baling machine has low baling efficiency and high operation cost. In order to make up for the uneven cutting of the bale net caused by the relaxed bale net, the existing technology usually needs to reduce the wrapping speed, which directly leads to a significant decrease in the bale output per unit time, making it difficult to meet the high efficiency demand of large-scale field operation. In addition, when the bale net is in a relaxed state, in order to ensure the stability of the bale wrapping, the length of the bale net often needs to be increased, causing waste of bale net materials and increasing the operation cost of agricultural production. Although some net winding structures try to optimize the transmission assembly, they fail to achieve precise coordination between the net feeding and cutting actions, further restricting the improvement of baling efficiency.

[0006] The most important point is that the mud adheres to the net easily and cannot be cleaned, causing multiple derivative problems. In addition to the above technical defects, the existing net structure also generally ignores the special nature of the field working environment. During the crop harvesting season, a large amount of dirt, dust and other impurities are often mixed in the straw. During the net conveying and wrapping process, these impurities will adhere to the surface of the net and the key components such as the roller shaft, transmission belt and cutter of the net structure. Since the existing net structure lacks a special cleaning mechanism, the adhered mud cannot be cleaned in time, which will cause a series of chain problems: first, it increases the rolling resistance of the roller shaft, aggravates the wear of the transmission components, shortens the service life of the net winding device, and increases the equipment maintenance cost; second, the accumulation of mud on the surface of the cutter will blunt the blade, reduce the sharpness of the net and the cutting effect, and even cause the net to be cut incompletely; third, the mud adhered to the net will affect the drying speed of the bale after wrapping the bale, increase the risk of bale mildew, and reduce the subsequent utilization value of the straw.

[0007] To solve the above problems, some improvement schemes have been proposed in the related field. A Chinese patent with application number CN202420894357.8 discloses a net winding mechanism and a baling machine, which relates to the field of baling machines. The net winding mechanism includes a housing, a roller, a first roller shaft, a first overrunning clutch, a second overrunning clutch, a clutch and a brake actuating mechanism. The roller and the first roller shaft are both rotationally connected to the housing. The first overrunning clutch and the second overrunning clutch are both sleeved on the first roller shaft, and the one-way transmission directions of the first overrunning clutch and the second overrunning clutch are opposite. The roller is transmissionally connected to the first overrunning clutch through the clutch, and the roller is transmissionally connected to the second overrunning clutch. The brake actuating mechanism is installed on the housing. The baling machine includes the net winding mechanism. The beneficial effects are: the net is in a tensioned state, the cutting effect of the net cutter is good, the net is more orderly, and the bale is more beautiful; the length of the single wrapping net is reduced, and the economic benefit is increased. The remaining net can be avoided from being brought into the baling chamber by the bale, which causes the net to be uneven or redundant, and causes the bale to fail to form, thereby improving the bale formation rate.

[0008] However, this scheme does not consider the cleaning of mud adhered to the net and the surface of the components. Long-term operation will still affect the transmission stability of the overrunning clutch, transmission belt and roller shaft, and reduce the operation reliability of the equipment.

[0009] In addition, a Chinese patent with application number CN202511397055.5 discloses a net winding device and a bundling machine. The net winding device includes a mounting frame, a net conveying mechanism, a net roll, and a net cutting device. The grass net is wound to form a net roll, and the free end of the net roll is pulled out to the net conveying mechanism. The net conveying mechanism is configured to convey the grass net downstream. The net cutting device includes a cutter mechanism and a reset assembly. The cutter mechanism is rotatably connected to the mounting frame. The cutter mechanism has a first state and a second state. In the first state, the cutter mechanism is away from the grass net. In the second state, the cutter mechanism rotates towards the grass net to cut the grass net. The reset assembly is arranged on the side of the mounting frame away from the cutter mechanism. One end of the reset assembly is connected to the cutter mechanism. The reset assembly is configured to drive the cutter mechanism to rotate away from the grass net, so that the cutter mechanism switches from the second state to the first state. The reset assembly can directly drive the cutter mechanism to reset, reducing the operation time of the cutter mechanism reset and improving the bundling efficiency.

[0010] However, this patent also does not design a corresponding cleaning structure for the problem of mud adhering to the net during field work. With the extension of the operation time, the mud on the surface of the grass net and the net spreading roller and the net conveying roller will continue to accumulate, resulting in increased conveying resistance of the grass net, intensified cutter wear, and other problems, which limits the long-term and efficient use of the device in complex muddy field environments.

[0011] In summary, although the existing round bale bundling machine's net winding structure has been optimized in terms of net tensioning, cutter reset efficiency, and other aspects, it still has not solved the key defect that the mud adhering to the net cannot be cleaned, and it has obvious deficiencies in dealing with the problems of component wear caused by impurities and the decline of operation stability. Therefore, it is of great practical significance and application value to develop a round bale bundling machine net winding device that has efficient net winding, precise net cutting, and automatic cleaning functions. SUMMARY

[0012] The main technical problem to be solved by the present application is to provide a round bale bundling machine net winding device that has a simple overall structure and combines net tensioning optimization, cutter efficient reset, and automatic mud cleaning functions. It can optimize the net tensioning degree in the round bale bundling machine, improve the cutter reset efficiency, solve the key defect that the mud adhering to the net cannot be cleaned, and improve the use effect.

[0013] To solve the above technical problems, the present application provides the following technical solutions:

[0014] A net winding device of a round bale bundling machine, comprising two symmetrically arranged mounting plates, a rubber roller rotatably mounted between the two mounting plates, a brake disc fixedly mounted at one end of the rubber roller and penetrating through the mounting plate, a brake actuating mechanism arranged at a position close to the brake disc on the mounting plate and capable of acting on the brake disc, one end of the brake actuating mechanism being elastically connected to the mounting plate through an elastic component, a driving rod slidingly mounted on the mounting plate at a position close to the brake disc, the driving end of the brake actuating mechanism being in contact with one end of the driving rod, and a net cutting knife assembly rotatably mounted at both ends of the rubber roller located in the two mounting plates, the end of the driving rod in contact with the brake actuating mechanism being hingedly connected to the net cutting knife assembly;

[0015] The driving rod is provided with an initial working position and a net cutting working position, when the driving rod is in the initial working position, the driving rod is in abutment with the driving end of the brake actuating mechanism and releases the locking of the rubber roller, while ensuring that the net cutting knife assembly does not cut the winding net;

[0016] When the driving rod is in the net cutting working position, the driving rod releases the abutment with the driving end of the brake actuating mechanism, the brake actuating mechanism locks and brakes the rubber roller under the action of the elastic component, at this time, the net cutting knife assembly completes the cutting of the winding net;

[0017] The net cutting knife assembly comprises two rotating plates rotatably mounted at both ends of the rubber roller, a square tube fixedly mounted between the two rotating plates, and a net cutting knife and a brush adjustably mounted on the square tube.

[0018] The following is a further optimization of the technical solution of the present application:

[0019] First and second tensioning roller assemblies are further arranged between the two mounting plates, the first and second tensioning roller assemblies are respectively located on both sides of the rubber roller, the first and second tensioning roller assemblies are connected through a rotating hinged connecting rod group and form an elastic linkage structure through a connecting spring.

[0020] Further optimization: a first supporting rod is arranged below the first tensioning roller assembly between the two mounting plates, and a second supporting rod is adjustably mounted above the second tensioning roller assembly between the two mounting plates.

[0021] Further optimization: a sliding shaft is vertically arranged on the opposite side of each of the two rotating plates and the mounting plate, a rotating arc adapted to the sliding shaft is formed at a position corresponding to the sliding shaft on each of the two mounting plates, and the sliding shaft slides along the length of the rotating arc in the rotating arc.

[0022] Further optimization: one end of the driving rod is hingedly connected to one of the sliding shafts.

[0023] Further optimization: the cutting net knife and the brush are arranged perpendicular to each other on the square tube, and the cutting net knife is arranged in the same direction as the rotating arc.

[0024] Further optimization: a plurality of first waist holes are arranged on the cutting net knife, and the cutting net knife can be installed on the square tube in an adjustable manner.

[0025] Further optimization: a plurality of second waist holes are arranged on the brush in an evenly spaced manner, and the brush can be installed on the square tube in an adjustable manner.

[0026] Further optimization: the brake actuator includes a stop lever rotatably installed on the mounting plate near the driving rod, the stop lever is located near the brake disc, and a disc brake pad is fixedly installed on the stop lever at the connection with the mounting plate.

[0027] Further optimization: the driving rod is fixedly installed with a stop shaft at one end near the brake disc, the stop shaft is in contact with the end of the stop lever away from the disc brake pad, the end of the stop lever connected with the mounting plate is vertically arranged with an extension rod, and the elastic component is hinged at the end of the extension rod.

[0028] The application adopts the above technical scheme, has a clever design and a reasonable structure, can improve the quality of the bale forming and reduce the unqualified rate, the device is provided with a brake actuator, when the driving rod drives the cutting net action, the heavy spring drives the stop lever to make the disc brake pad adhere to the brake disc, the rubber roller is quickly braked, the brake actuator and the cutting net action are forcibly synchronized through mechanical linkage, the rubber roller is braked instantly when the cutting net knife contacts the bale net, the excess bale net caused by the inertia rotation of the rubber roller is avoided, the cutting net incision is smooth, the rubber roller is prevented from being dragged by the bale to accelerate, and the bale net always maintains a stable tensioning state, which not only solves the problem that the length of the excess bale net after cutting is different, but also prevents the redundant bale net from being brought into the baling chamber, effectively avoids the situation that the next bale is not wrapped evenly and the forming fails; meanwhile, the device is composed of pure mechanical components, has no electric control and hydraulic elements, has high integration and small occupied space, is suitable for various small and medium-sized round bale balers, and the components are standard components, so that the procurement cost is low.

[0029] The baling efficiency can be improved, and the operation cost can be reduced, the cutting net knife assembly is linked with the driving rod, the driving rod drives the sliding shaft to slide along the rotating arc of the mounting plate, drives the cutting net knife to accurately complete the cutting net action, the driving rod can quickly drive the assembly to reset after cutting, no additional resetting mechanism is needed, and the interval time of single baling is shortened; the cutting net incision is smooth under the tensioning state, the baling speed does not need to be reduced to compensate for the cutting defect, the baling rate per unit time is significantly improved, the large-scale farmland operation demand is met, the bale net maintains a stable tensioning state, the length of the bale net does not need to be additionally increased to ensure the stability of the bale wrapping, the waste of the bale net material is reduced, and the operation cost of agricultural production is reduced; in addition, the cutting net knife can be installed in an adjustable position through the first waist hole, and the brush can be finely adjusted in height through the second waist hole, the service life of the easily damaged components is prolonged, and the equipment consumable replacement cost is reduced.

[0030] The problem of soil adhesion can also be solved, the stable operation of the equipment is ensured, and the utilization value of the straw is ensured. The brush is innovatively arranged in the cutting net knife assembly and is arranged vertically with the cutting net knife. The brush is in close contact with the baling net during operation, and can remove the soil, dust and other impurities adhered to the surface of the baling net in real time, so that the impurities do not affect the drying speed of the straw bale, the risk of mold of the straw bale is reduced, the subsequent feed processing, fuel utilization and other values of the straw are ensured, the impurities on the surface of components such as the rubber roller and the tensioning roller are cleaned synchronously, the rotating resistance of the roller shaft is reduced, the wear of the transmission component is relieved, the service life of the whole net winding device is prolonged, the equipment maintenance frequency and cost are reduced, the problem of dulling of the cutting knife caused by soil accumulation is avoided, the cutting net knife can continuously maintain good cutting effect, and the continuity of operation is avoided due to incomplete cutting of the net.

[0031] The application will be further described below in combination with the drawings and examples. SCHEMATIC DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the application;

[0033] Figure 2 It is a partial structure schematic diagram of the brake actuator in the embodiment of the application;

[0034] Figure 3 It is a structure schematic diagram of the A place in the embodiment of the application; Figure 1

[0035] Figure 4 It is a structure schematic diagram of the cutting net knife assembly in the embodiment of the application;

[0036] Figure 5 It is a structure schematic diagram of the cutting net knife assembly in the embodiment of the application;

[0037] Figure 6 It is a structure schematic diagram of the overall structure in the embodiment of the application.

[0038] In the figure: 1, mounting plate; 101, arc-shaped hole; 102, rotating arc; 2, cutting net knife assembly; 21, sliding shaft; 22, rotating plate; 23, square tube; 24, cutting net knife; 241, first waist hole; 25, brush; 251, second waist hole; 3, driving rod; 31, blocking shaft; 4, first supporting rod; 5, second supporting rod; 6, first tensioning roller assembly; 7, second tensioning roller assembly; 8, rubber roller; 10, brake actuator; 110, brake disc; 111, blocking rod; 112, disc brake pad; 113, elastic assembly; 11, wire package; 12, wire package supporting plate. DETAILED DESCRIPTION

[0039] As Figures 1-6 ​The net winding device of a round bale baler comprises two symmetrically arranged mounting plates 1, a rubber roller 8 rotatably arranged between the two mounting plates 1, a brake disc 110 fixedly arranged at one end of the rubber roller 8 and penetrating through the mounting plate 1, a brake actuating mechanism 10 arranged on the mounting plate 1 and capable of acting on the brake disc 110, one end of the brake actuating mechanism 10 being elastically connected to the mounting plate 1 through an elastic assembly 113, a driving rod 3 slidingly arranged on the mounting plate 1 and close to the brake disc 110, the driving end of the brake actuating mechanism 10 being in contact with one end of the driving rod 3, and a net cutting knife assembly 2 rotatably arranged at both ends of the rubber roller 8 located in the two mounting plates 1, one end of the driving rod 3 being hingedly connected to the net cutting knife assembly 2.

[0040] The driving rod 3 is provided with an initial working position and a net cutting working position, when the driving rod 3 is in the initial working position, the driving rod 3 is in abutment with the driving end of the brake actuating mechanism 10 and releases the locking of the rubber roller 8, and at the same time, the net cutting knife assembly 2 ensures that the net is not cut.

[0041] When the driving rod 3 is in the net cutting working position, the driving rod 3 releases the abutment with the driving end of the brake actuating mechanism 10, the brake actuating mechanism 10 locks and brakes the rubber roller 8 under the action of the elastic assembly 113, and at this time, the net cutting knife assembly 2 completes the cutting of the net.

[0042] The net cutting knife assembly 2 comprises two rotating plates 22 rotatably arranged at both ends of the rubber roller 8, a square tube 23 fixedly arranged between the two rotating plates 22, and a net cutting knife 24 and a brush 25 adjustably arranged on the square tube 23.

[0043] First and second tensioning roller assemblies 6 and 7 are further arranged between the two mounting plates 1, the first and second tensioning roller assemblies 6 and 7 are respectively located on both sides of the rubber roller 8, the first and second tensioning roller assemblies 6 and 7 are connected through rotating hinged connecting rods and form an elastic linkage structure through connecting springs.

[0044] A first supporting rod 4 is arranged between the two mounting plates 1 below the first tensioning roller assembly 6, and a second supporting rod 5 is adjustably arranged between the two mounting plates 1 above the second tensioning roller assembly 7.

[0045] A wire package 11 is rotatably arranged at another position between the two mounting plates 1, and a wire package supporting plate 12 is arranged below the wire package 11 and is fixedly arranged between the two mounting plates 1.

[0046] In this embodiment, the two mounting plates 1 are respectively fixedly arranged on both sides of the support of the round bale baler and close to the baling chamber.

[0047] The rubber roller 8 is rotatably mounted on the two mounting plates 1 by bearings, and the mounting method is known in the prior art, which will not be described in detail here.

[0048] The rubber roller 8 is rotatably mounted on the two mounting plates 1 by bearings, and the mounting method is known in the prior art, which will not be described in detail here.

[0049] The outer surface of the rubber roller 8 is made of elastic, wear-resistant, and anti-skid high-molecular material, and in this embodiment, it is made of rubber, which can play a role in conveying and guiding the net and preventing it from slipping.

[0050] The two rotating plates 22 are respectively sleeved on the two nylon sleeves, and the rotating plate 22 can rotate on the outer surface of the nylon sleeve through gap fitting.

[0051] The two rotating plates 22 are respectively vertically arranged on the opposite side of the mounting plate 1, and the rotating arc 102 adapted to the sliding shaft 21 is respectively arranged on the corresponding position of the two mounting plates 1, and the sliding shaft 21 slides along the length of the rotating arc 102.

[0052] One end of the driving rod 3 is hinged to one of the sliding shafts 21.

[0053] In this embodiment, one end of the rotating plate 22 is sleeved on the nylon sleeve, and the other end of the sliding shaft 21 is fixedly installed on the rotating plate 22, and the arc shape of the rotating arc 102 is centered on the center of the nylon sleeve, so that when the sliding shaft 21 slides in the rotating arc 102, the rotating plate 22 is guaranteed to rotate on the nylon sleeve.

[0054] The position of the square tube 23 corresponds to the two sliding shafts 21.

[0055] The cutting knife 24 and the brush 25 are arranged perpendicular to each other on the square tube 23, and the cutting edge of the cutting knife 24 is directed in the same direction as the rotating arc 102.

[0056] In this way, when the square tube 23 drives the cutting knife 24 to move in the rotating arc 102, the cutting edge of the cutting knife 24 can act on the net and cut it off.

[0057] The brush 25 is vertically arranged on one side of the square tube 23 above the cutting knife 24, and the brush head of the brush 25 is in close contact with the net, which can remove the sludge, stones, and soil blocks attached to the net when the bale rotates the net.

[0058] The side of the square tube 23 on which the net cutting knife 24 is installed is uniformly provided with a plurality of first threaded holes, and the side of the square tube 23 on which the brush 25 is installed is uniformly provided with a plurality of second threaded holes.

[0059] The net cutting knife 24 is provided with a first waist hole 241 at a position corresponding to the first threaded hole.

[0060] The first waist hole 241 is threadedly locked with a first bolt in the corresponding first threaded hole, which is not marked in the figure. By providing the first waist hole 241, the installation position of the net cutting knife 24 on the square tube 23 can be adjusted. When the net cutting knife 24 is slightly worn during use but has little effect on the cutting of the net, the first bolt is loosened, and the net cutting knife 24 is moved towards the net to improve the utilization rate of the net cutting knife 24.

[0061] In this embodiment, the net cutting knife 24 is made of 65Mn spring steel material. The net cutting knife 24 is a core executive component for realizing precise cutting of the binding net (grass net). Its core function is to quickly and smoothly cut the binding net when the number of net winding and the tightness of the grass bundle reach the set requirements, to ensure the complete formation of the grass bundle and the continuous subsequent operation, and to avoid waste of the binding net or failure of the grass bundle wrapping. The net cutting knife 24 needs to have sufficient sharpness to ensure that the binding net (mostly plastic net and woven net) is cut off at one time without residual connection. The specific structure of the net cutting knife 24 is known in the prior art, and will not be described here.

[0062] The brush 25 is provided with a second waist hole 251 at a position corresponding to the second threaded hole.

[0063] The second waist hole 251 is threadedly locked with a second bolt in the corresponding second threaded hole, which is not marked in the figure. By providing the second waist hole 251, the installation position of the brush 25 on the square tube 23 can be adjusted. When the brush 25 is worn after a period of use, the second bolt is loosened, and the brush 25 is moved towards the net winding to ensure that the brush head of the brush 25 is further in close contact with the surface of the net winding, thereby improving the use efficiency of the brush 25.

[0064] In this embodiment, the brush head of the brush 25 is made of commonly used nylon wire material that is wear-resistant, damage-resistant and does not damage the net winding. The diameter of the selected nylon wire is 1.2 mm.

[0065] The brush 25 is in close contact with the net winding at the initial working position and the net cutting working position, thereby increasing the cleaning force on the net winding.

[0066] The existing baling chamber of the round bale baler is usually provided as a detachable baling chamber composed of a fixed wall and a movable wall. The fixed wall is usually a part of a cylindrical shell rigidly connected to the frame and bears the basic support during the formation of the round bale. The movable wall is a rotatable and flipable arc-shaped plate covering the other part of the baling chamber. The arc of the movable wall matches that of the fixed wall and, when closed, together forms a complete cylindrical baling space. The movable wall of some models is also provided with an auxiliary roller shaft, which serves as a guide for the formation and unloading of the bale. The opening and closing of the movable wall are driven by a hydraulic drive. The specific structure is known in the prior art and will not be described in detail here.

[0067] The end of the drive rod 3 away from the net cutting knife assembly 2 is hinged to the movable wall. The hinge position of the drive rod 3 is close to the rotating position of the movable wall, which is not marked in the figure. The setting of the hinge position is based on the transmission adaptability, which is determined by the precise matching of the opening stroke of the movable wall and the action stroke of the net cutting knife assembly 2. When the movable wall is opened, the net cutting knife assembly 2 can be driven by the linkage action of the drive rod 3 to complete the preset net cutting action.

[0068] The end of the drive rod 3 close to the net cutting knife assembly 2 is hinged to the sliding shaft 21.

[0069] In this way, when a round bale is completed and needs to be released in the baling chamber of the round bale baler, the hydraulic drive is controlled to open the movable wall. During the rotating opening process, the sliding shaft 21 is pulled by the drive rod 3 to slide in the rotating arc 102, then the square tube 23, the net cutting knife 24 and the brush 25 are moved towards the direction close to the net winding. During this period, the net cutting knife 24 completes the net cutting action, and the brush 25 continues to clean the outer surface of the net winding. After the net cutting is completed, the round bale is then slid out of the baling chamber, completing the baling of a round bale. Then the movable wall is driven to close, driving the drive rod 3 to the initial working position, and the net cutting knife assembly 2 is reset.

[0070] The first tensioning roller assembly 6 and the second tensioning roller assembly 7 are connected by a rotating hinged link set and form an elastic linkage structure through a connecting spring.

[0071] The rotating hinged link set is composed of multiple metal links and is assembled according to the principle of a four-bar linkage mechanism. The two ends of the link set are hinged to the roller shaft supports of the first tensioning roller assembly 6 and the second tensioning roller assembly 7 through pins, and the link set is hinged to the inner side walls of the two mounting plates 1, forming a four-bar transmission structure that can rotate around the hinge point. This structure provides a stable movement space for the change in the distance between the first tensioning roller assembly 6 and the second tensioning roller assembly 7, ensuring that the two can be adjusted in synchronization in the direction of approaching or moving away from the rubber roller 8.

[0072] The two ends of the connecting spring are respectively hinged to the rotating hinged connecting rod group by bolts, close to the two ends of the first tensioning roller assembly 6 and the second tensioning roller assembly 7, and the connecting spring is pre-stretched during assembly, so that it is always in a tensioned state; under the tensioning force of the tensioning spring, the rotating hinged connecting rod group drives the first tensioning roller assembly 6 and the second tensioning roller assembly 7 to move towards each other through the transmission, and finally keeps the distance between the two at a minimum working state, providing a basic squeezing force for the net clamping.

[0073] The outer surface of the rotating roller of the first tensioning roller assembly 6 and the second tensioning roller assembly 7 is provided as an optical axis to reduce the friction of the net on the surface, and is located at the upper position on both sides of the rubber roller 8, respectively. The net is wound from the lower surface of the second tensioning roller assembly 7 to the upper surface of the rubber roller 8 and then out from the lower surface of the first tensioning roller assembly 6.

[0074] Under the continuous tensioning force of the connecting spring, the rotating hinged connecting rod group always applies a pulling force to the first tensioning roller assembly 6 and the second tensioning roller assembly 7, so that the roller shafts of the two tensioning roller assemblies closely fit the outer surface of the net, and cooperate with the supporting action of the rubber roller 8 to form a three-point clamping structure of the second tensioning roller-rubber roller-first tensioning roller. The structure stably clamps the net between the three through the squeezing force converted by the spring tensioning force, avoiding slipping, deviation or relaxation of the net during conveying.

[0075] During operation, the net passes through the first tensioning roller assembly 6, the rubber roller 8 and the second tensioning roller assembly 7 in sequence along the preset path, and the tensioning degree and tension stability of the net are greatly improved through the multi-roller coordinated winding mode, ensuring that the net closely fits the surface of the straw bale during the forming process in the pressing chamber, and significantly improving the compactness and forming quality of the straw bale. In addition, when the net cutting action is performed, the spring will immediately exert an elastic pre-tightening effect to continuously provide stable tension to the net, so that it always remains in a tensioned state, effectively avoiding problems such as cutting angle deviation, unevenness, incomplete cutting, residual connection and the like caused by net relaxation, and ensuring the accurate and efficient completion of the net cutting process.

[0076] The net is also wound on the first support rod 4 and the second support rod 5 along the preset path, further supporting the net and ensuring the tensioning degree of the net.

[0077] As shown in Figure 3 The mounting plate 1 is provided with an arc-shaped hole 101 at a position corresponding to the second support rod 5, and the second support rod 5 is adjustably mounted on the arc-shaped hole 101.

[0078] The second support rod 5 is provided in an arc shape and is adjustably mounted on the arc-shaped hole 101, so that the orientation of the arc shape can be adjusted, thereby adjusting the tensioning degree of the net and improving the overall use effect of the device.

[0079] AsFigure 1 As shown, the brake actuator 10 includes a stop bar 111 rotatably mounted on the mounting plate 1 near the driving rod 3, and the stop bar 111 is located near the brake disc 110.

[0080] A disc brake 112 is fixedly mounted on the stop bar 111 at the connection with the mounting plate 1. The rotation of the stop bar 111 drives the disc brake 112 to act on the brake disc 110 and stop the rotation of the brake disc 110, thereby achieving the rotation brake of the rubber roller 8.

[0081] The driving rod 3 is fixedly mounted with a stop shaft 31 at the end near the brake disc 110, and the stop shaft 31 is in contact with the end of the stop bar 111 away from the disc brake 112.

[0082] The end of the stop bar 111 connected with the mounting plate 1 is vertically arranged with an extension rod, and an elastic component 113 is hingedly connected at the end of the extension rod. The other end of the elastic component 113 is hingedly connected to the mounting plate 1. The elastic component 113 acts to pull the stop bar 111 by elastic force, and then the disc brake 112 acts on the brake disc 110 to complete the brake.

[0083] In this embodiment, the elastic component 113 is selected as a heavy spring.

[0084] The specific process is as follows: when the net is not cut, the driving rod 3 is in the initial working position, at the same time, the stop shaft 31 is in contact with the other end of the stop bar 111, the heavy spring is stretched, and the disc brake 112 does not work at this time. When in the net cutting working position, the driving rod 3 pulls the net cutting knife assembly 2, and the stop shaft 31 at the end of the driving rod 3 is separated from the contact with the stop bar 111. The heavy spring restores the deformation and pulls the extension rod, driving the disc brake 112 to act on the brake disc 110 to complete the brake.

[0085] The brake actuator 10 synchronously and accurately brakes, which can improve the quality of net cutting and bale, and the brake actuator 10 and the net cutting action are forcibly synchronized through mechanical linkage. The rubber roller 8 is immediately braked at the moment when the net cutting knife 24 contacts the bale, avoiding the excessive length or shortness of the residual net caused by the inertial rotation of the rubber roller 8, and the cutting incision is flat.

[0086] In this embodiment, the wire package 11 is used to store the bale net, and the core function is to bear the rolled bale net (such as plastic net, woven net, etc.), and to rotate synchronously with the net consumption in the baling operation to realize the stable release of the bale net. The wire package support plate 12 is a supporting component, and the core function is to provide bottom support and operation stability for the wire package 11, avoiding the deviation of the wire package 11 due to its own weight or operation vibration. The specific structure is the existing technology, which will not be described here.

[0087] For those skilled in the art, the changes, modifications, replacements and variations made to the embodiments without departing from the principles and spirits of the present application, still fall within the protection scope of the present application according to the teachings of the present application.

Claims

1. A wire wrapping device for a round bale baler, comprising two symmetrically spaced mounting plates (1), characterized in that: A rubber roller (8) is rotatably mounted between two mounting plates (1). One end of the rubber roller (8) passes through the mounting plate (1) and is fixedly mounted with a brake disc (110). A brake actuator (10) that can act on the brake disc (110) is provided on the mounting plate (1) near the brake disc (110). One end of the brake actuator (10) is elastically connected to the mounting plate (1) through an elastic component (113). A drive rod (3) is slidably mounted on the mounting plate (1) near the brake disc (110). The drive end of the brake actuator (10) is in contact with one end of the drive rod (3). A wire cutter assembly (2) is rotatably mounted on both ends of the rubber roller (8) inside the two mounting plates (1). The end of the drive rod (3) that is in contact with the brake actuator (10) is simultaneously hinged to the wire cutter assembly (2). The drive rod (3) is provided with an initial working position and a cutting position. When the drive rod (3) is in the initial working position, the drive rod (3) is in contact with the drive end of the brake actuator (10) and the locking of the rubber roller (8) is released, while ensuring that the cutting knife assembly (2) does not cut the wrapped net. When the drive rod (3) is in the cutting position, the drive rod (3) is released from the top contact with the drive end of the brake actuator (10), and the brake actuator (10) locks and brakes the rubber roller (8) under the action of the elastic component (113). At this time, the cutting knife assembly (2) completes the cutting of the wrapped net. The wire cutting knife assembly (2) includes rotating plates (22) rotatably mounted at both ends of the rubber roller (8), and a square tube (23) is fixedly installed between the two rotating plates (22). A wire cutting knife (24) and a brush (25) are tunably mounted on the square tube (23).

2. The wrapping device for a round bale baler according to claim 1, characterized in that: A first tension roller assembly (6) and a second tension roller assembly (7) are also provided between the two mounting plates (1). The first tension roller assembly (6) and the second tension roller assembly (7) are located on both sides of the rubber roller (8). The first tension roller assembly (6) and the second tension roller assembly (7) are connected by a rotating hinge linkage group and form an elastic linkage structure by a connecting spring.

3. The wire wrapping device for a round bale baler according to claim 1, characterized in that: A first support rod (4) is provided between the two mounting plates (1) below the first tension roller assembly (6), and a second support rod (5) is adjustablely installed between the two mounting plates (1) above the second tension roller assembly (7).

4. The wire wrapping device for a round bale baler according to claim 1, characterized in that: The two rotating plates (22) are respectively provided with sliding shafts (21) on the opposite side of the mounting plate (1). The two mounting plates (1) are respectively provided with rotating arcs (102) adapted to the sliding shafts (21) at the corresponding positions. The sliding shafts (21) slide along the length of the rotating arcs (102) within the rotating arcs (102).

5. The wire wrapping device for a round bale baler according to claim 4, characterized in that: One end of the drive rod (3) is hinged to one of the sliding shafts (21).

6. The wire wrapping device for a round bale baler according to claim 5, characterized in that: The cutting blade (24) and the brush (25) are arranged perpendicularly to each other on the square tube (23), and the blade of the cutting blade (24) faces the same direction as the rotation arc (102).

7. The wrapping device for a round bale baler according to claim 6, characterized in that: The cutting blade (24) has multiple evenly spaced first waist holes (241) that can be adjusted and installed on the square tube (23).

8. The wire wrapping device for a round bale baler according to claim 7, characterized in that: The brush (25) has multiple evenly spaced second waist holes (251) that can be adjusted and installed on the square tube (23).

9. The wrapping device for a round bale baler according to claim 1, characterized in that: The brake actuator (10) includes a stop bar (111) rotatably mounted on a mounting plate (1) near the drive rod (3). The stop bar (111) is located near the brake disc (110), and a disc brake pad (112) is fixedly mounted on the stop bar (111) at the connection with the mounting plate (1).

10. The wire wrapping device for a round bale baler according to claim 9, characterized in that: The drive rod (3) is fixedly mounted with a stop shaft (31) at one end near the brake disc (110). The stop shaft (31) contacts the end of the stop rod (111) away from the disc brake pad (112). An extension rod is vertically arranged at the end of the stop rod (111) connected to the mounting plate (1). An elastic component (113) is hinged at the end of the extension rod.

Images