Net cutting mechanism of bundling machine

Abstract

A net cutting mechanism of a bundling machine comprises a cutter assembly, a fixing block, a right-angle motor, a transmission assembly, a knurled bolt, a metering plate, a limiting plate, a supporting plate and an oil cylinder, an output shaft of the right-angle motor is vertically fixed to one end of the transmission assembly, the knurled bolt is horizontally fixed to the other end of the transmission assembly, and after the metering plate is separated from supporting of the knurled bolt, the knurled bolt is fixed to the limiting plate. The cutter located at the bottom of the cutter assembly collides with the fixing block, the telescopic end of the oil cylinder starts to stretch from the initial position and drives the supporting plate to rotate upwards till abutting against the inserting bar located at the top of the cutter assembly, and then the telescopic end of the oil cylinder stretches to the limiting position and retracts to the initial position. According to the utility model, through the combination of a stable structure and electric control, the net cutting work and return of the cutter assembly are controlled by driving the right-angle motor and the oil cylinder, so that the manual net cutting function which a traditional bundling machine does not have can be realized, the performance is reliable, various accidental working conditions can be flexibly handled, and the working efficiency is powerfully improved.

Description

Technical Field

[0001] The utility model relates to the technical field of balers, and particularly relates to a net cutting mechanism of a baler. Background Art

[0002] With the popularization of balers, balers are developing towards reliability and high efficiency. The main working steps of a baler usually include picking up, feeding, baling, and winding and cutting the net. The picker is responsible for collecting straw or forage on the ground, and then feeding it into the baling chamber through a feeding system. In the baling chamber, a bale is formed by the extrusion of multiple rollers, and a binding net is used to wind and fix it. After the winding of the net is completed, the net cutting device cuts the net material to ensure the integrity of the bale and facilitate handling.

[0003] The component that affects the reliability of the baler is, first and foremost, the winding and cutting of the net. And the failure of not being able to cut the net rope easily occurs. The net rope cannot be effectively cut at a certain frequency, thus affecting the working efficiency of the baler. Therefore, it is necessary to design a net cutting mechanism for the baler to overcome the above problems and make this component more reliable and efficient. Content of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the purpose of the utility model is to provide a net cutting mechanism for a baler to solve the technical problem of not being able to effectively cut the net rope.

[0005] The utility model is realized through the following technical solutions:

[0006] A net cutting mechanism of a baler, comprising a cutter assembly, a fixed block, a right-angle motor, a transmission assembly, a knurled bolt, a metering plate, a limiting plate, a support plate and an oil cylinder. The right-angle motor is vertically fixed on the machine body, the output shaft of the right-angle motor is vertically fixed at one end of the transmission assembly, a knurled bolt is horizontally fixed at the other end of the transmission assembly, the rod part of the knurled bolt is constructed as a circle of tooth grooves, a section of rack is constructed at the bottom of the metering plate, the tooth grooves are meshed with the rack, the top of the metering plate is hinged to the top of the cutter assembly to form a hinge point, a hole is also opened on the top of the metering plate above this hinge point, and it is elastically connected with a hook welded on the top of the cutter assembly through a tension spring. The top end of the cutter assembly is also hinged to one end of the support plate, the other end of the support plate is hinged to the telescopic end of the oil cylinder, the cylinder body of the oil cylinder is hinged to the machine body, the two ends of the top of the cutter assembly are rotatably connected to the mounting seat, and the mounting seat is fixed on the machine body. The fixed block is arranged at the position where the net rope passes on the machine body. After the metering plate breaks away from the support of the knurled bolt, the cutter located at the bottom of the cutter assembly impacts the fixed block. The telescopic end of the oil cylinder starts to extend from the initial position, drives the support plate to rotate upwards until it abuts against the inserting rod located on the top of the cutter assembly, its telescopic end then extends to the limit position and then retracts to the initial position. At this time, under the restraint of the tension spring and the limiting plate, the rack at the bottom of the metering plate falls on the tooth grooves of the knurled bolt, and the limiting plate is cooperatively arranged on the machine body.

[0007] Preferably, the cutter assembly further comprises a connecting claw, a cross beam and a cutter seat. The top of the cutter seat is welded on the cross beam. The two ends of the cross beam are rotatably connected to the mounting seat, and one end is elastically connected to the machine body through a tension spring and a torsion spring. The bottom of the cutter seat is fixed with a pressing plate through bolts, spring washers and plain washers, and a cutter is pressed between them. One end of the connecting claw is welded on the cross beam. Three rows of holes are sequentially arranged on the connecting claw at distances from near to far from the welding point, and are respectively hinged to the other end of the support plate, hinged to the top of the metering plate, and fixed with an inserting rod.

[0008] Preferably, the shape of the metering plate is a sector plate with a straight handle at the top. Two holes are vertically opened on the straight handle. The lower hole is hinged to the corresponding hole on the connecting claw through a pin shaft, and the upper hole is elastically connected with a hook welded on the top of the connecting claw through a tension spring. The arc end of the metering plate serves as its bottom and is constructed with a section of rack.

[0009] Preferably, the cylinder body of the oil cylinder is hinged to the machine body through long bolts, plain washers, nylon sleeves and nuts, and the telescopic end of the oil cylinder is connected to the other end of the support plate through a long pin shaft and an opening pin.

[0010] Preferably, a tension spring is arranged at the adjacent parallel position of the oil cylinder, and the two ends of the tension spring are respectively connected to the long bolt and the long pin shaft.

[0011] Preferably, a silica gel sleeve and a nylon tube are installed between the cross beam and the mounting position of the mounting seat.

[0012] Preferably, the transmission assembly includes a connecting plate, a pull rod, a rotating seat and a rotating shaft. A connecting plate is vertically fixed on the output shaft of the right-angle motor. The two ends of the pull rod are respectively hinged to the connecting plate and the rotating seat through ball head bearings. A rotating cavity is formed horizontally at the bottom of the rotating seat. Two one-way bearings are installed on the inner wall of the rotating cavity. A spacer sleeve is installed between the two one-way bearings. One end of the rotating shaft is horizontally supported on the two one-way bearings, and the other end of the rotating shaft is horizontally installed on the machine body through a rolling bearing, and a knurled bolt is fixedly arranged on the part extending out of the rolling bearing.

[0013] Preferably, a semi-circular protrusion is provided on the side wall of the fixed block, and the position of the semi-circular protrusion is higher than the position where the cutting knife impacts on the fixed block.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By using the connecting rod structure and the one-way bearing in the transmission assembly of the present utility model, the circumferential rotation of the output shaft of the motor is sequentially converted into reciprocating rotation and one-way rotation, making the transmission structure of the net cutting component more reliable. By designing a stable structure combined with electronic control, since the electronic control part is added, the net cutting work and the return of the cutting knife assembly can be controlled by manually controlling the driving of the right-angle motor and the oil cylinder, realizing the manual net cutting function that the traditional baler does not have. The performance is reliable, and it can flexibly cope with various accidental working conditions. At the same time, it is also convenient for the debugging and maintenance of the net cutting mechanism. The net cutting frequency can also be controlled by designing the rotation speed of the right-angle motor and coordinating the speed of the oil cylinder's telescopic movement, effectively improving the work efficiency.

[0016] 2. By arranging springs on the cross beam of the cutting knife assembly and near the oil cylinder, it plays a role of flexible connection, which can not only buffer and shock absorb, but also adjust and replace springs with different elasticities to be suitable for the auxiliary effect on the net cutting rhythm, improving the net cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the net cutting mechanism of the baler of the present utility model in the initial state;

[0019] Figure 2Schematic structural diagram of the net cutting mechanism of the baler of the present utility model in the net cutting state;

[0020] Figure 3 Schematic structural diagram of the net cutting mechanism of the baler of the present utility model in the retracted state;

[0021] Figure 4 Front view structural diagram of the transmission component of the present utility model;

[0022] Figure 5 Side view structural diagram of the transmission component of the present utility model;

[0023] Figure 6 Schematic structural diagram of the metering plate of the present utility model;

[0024] Figure 7 Side view structural diagram of the cutter assembly of the present utility model;

[0025] Figure 8 Front view structural diagram of the cutter assembly of the present utility model;

[0026] Figure 9 is Figure 8 Enlarged view of part A in

[0027] Among them, cutter assembly 1, cutter 101, connecting claw 102, cross beam 103, cutter seat 104, fixed block 2, right angle motor 3, transmission component 4, connecting plate 401, pull rod 402, rotating seat 403, rotating cavity 40301, rotating shaft 404, knurled bolt 5, tooth groove 501, metering plate 6, rack 601, straight handle 602, lower hole 60201, upper hole 60202, limit plate 7, support plate 8, oil cylinder 9, hook 10, mounting seat 11, inserting bar

[0028] 12, tension spring 13, torsion spring 14, pressing plate 15, spring washer 16, long bolt 17, flat washer 18, nylon sleeve 19, long pin shaft 20, split pin 21, silica gel sleeve 22, nylon tube 23, one-way bearing 24, spacer 25, rolling bearing 26, semi-circular protrusion 27, net rope 28. Detailed implementation manners

[0029] In order to enable those skilled in the art of the present technology to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings.Figures 1-9 Shown is a net cutting mechanism of a baler, including a cutter assembly 1, a fixed block 2, a right-angle motor 3, a transmission assembly 4, a knurled bolt 5, a metering plate 6, a limiting plate 7, a support plate 8, and an oil cylinder 9.

[0031] The right-angle motor 3 is vertically fixed to the machine body. The output shaft of the right-angle motor 3 is vertically fixed to one end of the transmission assembly 4. A knurled bolt 5 is horizontally fixed to the other end of the transmission assembly 4. The rod portion of the knurled bolt 5 is configured with a circle of tooth grooves 501. A section of rack 601 is configured at the bottom of the metering plate 6. The tooth grooves 501 and the rack 601 are meshed.

[0032] The top of the metering plate 6 is hinged to the top of the cutter assembly 1. The hinged position forms a hinge point. A hole is also opened on the top of the metering plate 6 above this hinge point. It is elastically connected to a hook 10 welded to the top of the cutter assembly 1 through a tension spring 13 for the return of the metering plate 6.

[0033] The top end of the cutter assembly 1 is also hinged to one end of the support plate 8. The other end of the support plate 8 is hinged to the telescopic end of the oil cylinder 9. The cylinder body of the oil cylinder 9 is hinged to the machine body. Both ends of the top of the cutter assembly 1 are rotatably connected to a mounting seat 11. The mounting seat 11 is fixed to the machine body. The fixed block 2 is arranged at the position where the net rope passes on the machine body.

[0034] As Figure 1 is the initial state. At this time, the entire cutter assembly 1 is supported on the knurled bolt 5 through the metering plate 6. When the metering plate 6 is separated from the support of the knurled bolt 5, the cutter 101 located at the bottom of the cutter assembly 1 impacts the fixed block 2. The telescopic end of the oil cylinder 9 starts to extend from the initial position, driving the support plate 8 to rotate upward until it abuts against the insertion bar 12 located on the top of the cutter assembly 1. Its telescopic end then extends to the limit position and then retracts to the initial position. At this time, under the constraint of the tension spring 13 and the limiting plate 7, the rack 601 at the bottom of the metering plate 6 falls on the tooth grooves 501 of the knurled bolt 5. The limiting plate 7 is fixed to the machine body through a bolt structure and is used to determine the return position of the metering plate 6.

[0035] It can be seen that due to the addition of the electric control part, by manually controlling the driving of the right-angle motor 3 and the oil cylinder 9 to control the net cutting work and return of the cutter assembly 1, the manual net cutting function that the traditional baler does not have can be realized, which can flexibly cope with various accidental working conditions. At the same time, it is also convenient for the debugging and maintenance of the net cutting mechanism, greatly improving the work efficiency.

[0036] As Figure 1 , a semi-circular protrusion 27 is provided on the side wall of the fixed block 2. The position of the semi-circular protrusion 27 is higher than the position where the cutter impacts the fixed block 2. The semi-circular protrusion 27 plays a role in tensioning the net rope 28. Because the shape of the protrusion is circular, it will not affect the net feeding process and improves the efficiency of the cutter 101 cutting the net rope 28.

[0037] As shown in Figure 4 , the transmission assembly 4 includes a connecting plate 401, a pull rod 402, a rotating seat 403 and a rotating shaft 404. A connecting plate 401 is vertically fixed on the output shaft of the right-angle motor 3. Both ends of the pull rod 402 are respectively hinged to the connecting plate 401 and the rotating seat 403 through spherical head bearings. A rotating cavity 40301 is formed horizontally at the bottom of the rotating seat 403. Two one-way bearings 24 are installed on the inner wall of the rotating cavity 40301. A spacer sleeve 25 is installed between the two one-way bearings 24, so that there is a gap between the rotating seat 403 and the machine body, which will not affect the rotation. One end of the rotating shaft 404 is horizontally supported on the two one-way bearings 24, and the other end of the rotating shaft 404 is horizontally installed on the machine body through a rolling bearing 26, and a knurled bolt 5 is fixedly provided on the part extending out of the rolling bearing 26. As shown in Figure 5 , the connecting plate 401 and the pull rod 402 form a connecting rod structure, which converts the circular motion of the output shaft of the right-angle motor 3 into the reciprocating motion of the pull rod 402 driving the rotating seat 403. Since the one-way bearing 24 can only rotate in one direction ( Figure 5 clockwise direction in Figure 5 ), the rotating shaft 404 will only rotate when rotating against the rotation direction of the one-way bearing (

[0038] counterclockwise direction in Figure 6 ), that is, the knurled bolt 5 will only rotate when rotating against the rotation direction of the one-way bearing. The knurled bolt 5 drives the metering plate 6 through a circle of tooth grooves 501 formed on its rod part. After the metering plate 6 is separated from the support of the knurled bolt 5, the cutter assembly 1, under the action of the two side pull springs 13, the torsion spring 14 and its own weight, makes the cutter 101 collide with the fixed block 2. Since the mesh rope 28 is already in a tensioned state, the mesh rope 28 passing between the two can be cut more conveniently.

[0039] As shown in Figure 7 and Figure 8 , the cutter assembly 1 is used as the main body, which includes a cutter 101, a connecting claw 102, a cross beam 103 and a cutter seat 104. The top of the cutter seat 104 is welded to the cross beam

[0040] On the crossbeam 103, both ends of the crossbeam 103 are rotatably connected to the mounting seat 11, and one end is elastically connected to the machine body through a tension spring 13 and a torsion spring 14. A pressing plate 15 is fixed to the bottom of the cutter holder 104 through bolts, spring washers 16 and flat washers 18, and a cutter 101 is pressed between them. One end of the connecting claw 102 is welded to the crossbeam 103. Three rows of holes are arranged on the connecting claw 102 in sequence from near to far from the welding point, and are respectively hinged to the other end of the support plate 8, hinged to the top of the metering plate 6, and a plug bar 12 is fixed.

[0041] As Figure 8 , the cylinder body of the oil cylinder 9 is hinged to the machine body through long bolts 17, flat washers 18, nylon sleeves 19 and nuts, and the telescopic end of the oil cylinder 9 is connected to the other end of the support plate 8 through a long pin shaft 20 and a split pin 21.

[0042] A tension spring 13 is arranged at an adjacent parallel position of the oil cylinder 9, and both ends of the tension spring 13 are respectively connected to the long bolt 17 and the long pin shaft 20.

[0043] As Figure 8 And Figure 9 , a silica gel sleeve 22 and a nylon tube 23 are installed between the installation positions of the crossbeam 103 and the mounting seat 11 for the rotation and shock absorption of the cutter assembly 1.

[0044] The working principle of the present utility model:

[0045] Figure 1 For the initial state: The entire cutter assembly 1 is supported on the knurled bolt 5 through the metering plate 6. When cutting the net is required, the right-angle motor 3 is driven to work through an electric signal, and the output shaft of the right-angle motor 3 drives the connecting plate 401 and the pull rod 402, so that the rotating seat 403 reciprocates as Figure 5 shown. Due to the existence of the one-way bearing 24, the knurled bolt 5 will only rotate when rotating in the reverse direction of the one-way bearing (i.e., Figure 5 rotating counterclockwise in

[0046] Figure 2 is the state of cutting the net. When the backpack of the round bale baler is opened and the bale is ejected, the oil cylinder 9 works, and the support plate 8 is lifted until it abuts against the plug bar 12 to lift the entire cutter assembly 1. When the telescopic end of the oil cylinder 9 extends to the limit of the stroke (such as Figure 3 is the return state), under the action of the tension spring 13 and the limit plate 7, the metering plate 6 can ensure that after the oil cylinder 9 finishes working, the metering plate 6 accurately falls on the tooth grooves 501 of one circle of the rod part of the knurled bolt 5. The telescopic end of the oil cylinder 9 retracts and returns to the initial state. Thus, the overall working process of a net cutting mechanism of the present utility model ends.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A web cutting mechanism for a baler, characterized in that: The invention comprises a cutter assembly (1), a fixing block (2), a right-angle motor (3), a transmission assembly (4), a knurled bolt (5), a metering plate (6), a limit plate (7), a support plate (8) and an oil cylinder (9), wherein the right-angle motor (3) is vertically fixed on a machine body, an output shaft of the right-angle motor (3) is vertically fixed to one end of the transmission assembly (4), a knurled bolt (5) is horizontally fixed to the other end of the transmission assembly (4), and a rod portion of the knurled bolt (5) is structured as a circle of tooth grooves ( 501), the bottom of the metering plate (6) is constructed with a rack (601), the tooth groove (501) is meshed with the rack (601), the top of the metering plate (6) is hinged to the top of the cutter assembly (1) to form a hinge point, the top of the metering plate (6) is also provided with a hole above the hinge point, and the hole is elastically connected to the hook (10) welded on the top of the cutter assembly (1) through a tension spring (13), and the top of the cutter assembly (1) is also hinged to One end of the support plate (8), the other end of the support plate (8) is hingedly arranged with the telescopic end of the oil cylinder (9), the cylinder body of the oil cylinder (9) is hingedly connected to the machine body, the top two ends of the cutter assembly (1) are rotatably connected to the mounting seat (11), the mounting seat (11) is fixed to the machine body, the fixing block (2) is arranged at the position where the net rope passes on the machine body, and the cutter (101) located at the bottom of the cutter assembly (1) is arranged after the metering plate (6) is separated from the support of the knurled bolt (5). ) hits the fixed block (2), the telescopic end of the oil cylinder (9) starts to extend from the initial position, driving the support plate (8) to rotate upward until it contacts the plug rod (12) located on the top of the cutter assembly (1), and the telescopic end extends to the limit position and then retracts to the initial position. At this time, the metering plate (6) is constrained by the tension spring (13) and the limit plate (7), and the rack (601) at the bottom falls on the tooth groove (501) of the knurled bolt (5), and the limit plate (7) is matched with the machine body.

2. The web cutting mechanism for a baler according to claim 1, characterized in that: The cutter assembly (1) further comprises a connecting claw (102), a crossbeam (103) and a cutter seat (104); the top of the cutter seat (104) is welded to the crossbeam (103); the two ends of the crossbeam (103) are rotatably connected to the mounting seat (11); one end of the crossbeam (103) is elastically connected to the machine body via a tension spring (13) and a torsion spring (14); a pressing plate (15) is fixed to the bottom of the cutter seat (104) via bolts, spring washers (16) and flat washers (18); the cutter (101) is pressed therebetween; one end of the connecting claw (102) is welded to the crossbeam (103); three rows of holes are sequentially arranged on the connecting claw (102) from the near end to the far end of the welding point; the connecting claw (102) is respectively hinged to the other end of the support plate (8), hinged to the top of the metering plate (6), and fixed with a plug rod (12).

3. The web cutting mechanism for a baler according to claim 2, characterized in that: The metering plate (6) is in the shape of a fan-shaped plate with a straight handle (602) on the top, and two holes are vertically opened on the straight handle (602), wherein the lower hole (60201) is hinged to the corresponding hole on the connecting claw (102) through a pin, and the upper hole (60202) is elastically connected to the hook (10) welded on the top of the connecting claw (102) through a tension spring (13), and the arc-shaped end of the metering plate (6) serves as its bottom, and is constructed with a rack (601).

4. The web cutting mechanism for a baler according to claim 2, characterized in that: The cylinder body of the oil cylinder (9) is hinged to the machine body through a long bolt (17), a flat washer (18), a nylon sleeve (19) and a nut, and the telescopic end of the oil cylinder (9) is connected to the other end of the support plate (8) through a long pin shaft (20) and a cotter pin (21).

5. The web cutting mechanism for a baler according to claim 4, characterized in that: A tension spring (13) is provided at an adjacent parallel position of the oil cylinder (9), and two ends of the tension spring (13) are respectively connected to a long bolt (17) and a long pin shaft (20).

6. The web cutting mechanism for a baler according to claim 2, characterized in that: A silicone sleeve (22) and a nylon tube (23) are arranged between the cross beam (103) and the mounting position of the mounting seat (11).

7. The web cutting mechanism for a baler according to claim 1, characterized in that: The transmission assembly (4) comprises a connecting plate (401), a pull rod (402), a rotating seat (403) and a rotating shaft (404); the connecting plate (401) is vertically fixed on the output shaft of the right-angle motor (3); the two ends of the pull rod (402) are respectively hinged to the connecting plate (401) and the rotating seat (403) through ball bearings; the bottom of the rotating seat (403) is horizontally constructed with a rotating chamber (40301); two one-way bearings (24) are installed on the inner wall of the rotating chamber (40301); a spacer sleeve (25) is installed between the two one-way bearings (24); one end of the rotating shaft (404) is horizontally supported on the two one-way bearings (24); the other end of the rotating shaft (404) is horizontally installed on the machine body through a rolling bearing (26); and a knurled bolt (5) is fixed on the part extending out of the rolling bearing (26).

8. The web cutting mechanism for a baler according to claim 1, characterized in that: A semicircular protrusion (27) is provided on the side wall of the fixing block (2), and the position of the semicircular protrusion (27) is higher than the position where the cutter hits the fixing block (2).

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