Silage feed square bale wrapping device and use method thereof

Abstract

The present invention relates to a film wrapping device for square bales of silage feed, comprising a base, a turntable located above the base and rotatably connected to the base, a power mechanism for driving the turntable to rotate installed on the base; two groups of material block bearing devices are provided on the turntable, and the two groups of material block bearing devices are symmetrically arranged; a lifting material receiving mechanism is provided between two groups of brackets of each group of material block bearing devices; a film cutting mechanism is provided on the turntable; and a film placing mechanism is connected to the base. The present application is applied to the film wrapping of square bales, and has the advantages of tight and strict wrapping, high operating efficiency, and low labor intensity of workers, effectively filling the market gap.

Description

Technical Field

[0001] The invention relates to a film wrapping device, in particular to a film wrapping device for square bales of silage and a use method thereof. Background Art

[0002] With the development of my country's economy, animal husbandry has also developed rapidly, and the demand for forage has increased day by day. Natural forage can no longer meet the needs of animal husbandry development. Therefore, the area of ​​forage cultivation is getting larger and larger and increasing year by year. The traditional harvesting method is to harvest hay after cutting and drying, which causes serious nutritional loss of forage. Forage silage has been proved in practice to be a scientific harvesting method that maintains the nutritional content of forage, reduces losses and facilitates storage.

[0003] During the silage process, the material blocks need to be coated. Existing coating equipment can generally only be used for round bales but not square bales. The few coating equipment used for square bales also have the defects of loose wrapping and low operating efficiency.

[0004] Based on the above problems, the present application proposes a silage square bale wrapping device, thereby effectively filling the market gap. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a silage square bale film wrapping device and a use method thereof.

[0006] The first aspect of the present invention provides a silage bale wrapping device, comprising a base, a turntable located above the base and rotatably connected to the base, and a power mechanism for driving the turntable to rotate is installed on the base; two groups of material block carrying devices are provided on the turntable, and the two groups of material block carrying devices are symmetrically arranged; each group of material block carrying devices includes two groups of brackets with the same structure and respectively arranged on the front and rear sides of the turntable, each group of brackets includes an L-shaped connecting plate, the L-shaped connecting plate includes a first connecting part and a second connecting part, one end of the second connecting part is fixed to the turntable, one end of the upper swing arm is hinged to the first connecting part, and one end of the lower swing arm is hinged to the first connecting part. One end is hinged to the second connecting part, and the upper swing arm and the lower swing arm are connected by a two-way threaded adjustment rod, one end of the two-way threaded adjustment rod is hinged to the upper swing arm, and the other end of the two-way threaded adjustment rod is hinged to the lower swing arm; the upper rollers are rotatably connected between the two upper swing arms of the front and rear groups of brackets, and the lower rollers are rotatably connected between the two lower swing arms of the front and rear groups of brackets, and the two upper rollers and the two lower rollers rotate synchronously in the same direction under the drive of the driving mechanism; a lifting material receiving mechanism is arranged between the two groups of brackets of each group of material block carrying devices; a film cutting mechanism is arranged on the turntable; and a film placing mechanism is connected to the base.

[0007] The hinge position of the upper swing arm and the first connection part is the first hinge point, the hinge position of the lower swing arm and the second connection part is the second hinge point, the hinge position of the two-way thread adjustment rod and the upper swing arm is the third hinge point, and the hinge position of the two-way thread adjustment rod and the lower swing arm is the fourth hinge point. The lines connecting the first hinge point, the second hinge point, the third hinge point and the fourth hinge point form a quadrilateral. When the length of the two-way thread adjustment rod is adjusted, the square bale rotates circumferentially under the drive of the two upper rollers and the two lower rollers, and the center of gravity of the corresponding square bale is transferred. Under the action of the gravity of the square bale, the quadrilateral formed by the four hinge points will undergo an adaptive change in angle, so that the upper roller and the lower roller are always in contact with the square bale, increasing the tightness of the subsequent film wrapping process.

[0008] Preferably, the lifting material receiving mechanism comprises a pallet, rollers are arranged on the pallet, two support rods are hinged on the pallet, the lower end of each support is hinged to the mounting plate, the mounting plate is connected between the two L-shaped connecting plates of the two sets of brackets, the cylinder barrel of the lifting cylinder is hinged to the mounting plate, and the push rod of the lifting cylinder is hinged to the pallet. The pallet can be lifted up by the lifting cylinder, and after the pallet is lifted up, it is higher than the plane where the upper roller and the lower roller are located. When the pallet is retracted, the pallet is lower than the plane where the upper roller and the lower roller are located. When the pallets of the two sets of lifting material receiving mechanisms are lifted up, the square bundle falls on the two pallets, and after the materials are received, the pallets are gradually retracted, so that the square bundle gradually falls on the two upper rollers and the two lower rollers.

[0009] Preferably, the film cutting mechanism includes a base connected to the turntable, the base and the turntable are connected by bolts, the cylinder barrel of the film cutting cylinder is hinged to the base, the push rod of the film cutting cylinder is hinged to one end of the crank arm, the inflection point of the crank arm is hinged to the base, the other end of the crank arm is hinged to the middle part of the pressure plate, one end of the pressure plate is connected to two pressure rods, the other end of the pressure plate is hinged to the swing arm, and the other end of the swing arm is hinged to the base; a blade is installed on the crank arm, a gap is left between the two pressure rods, and the blade passes through the gap when the two pressure rods fall.

[0010] As a preferred embodiment, one of the two pressure rods is high and the other is low. When the pressure rods fall, the low pressure rod will first contact the film, thereby generating a certain tensioning force on the film, which is beneficial to the film cutting.

[0011] Preferably, a pad is provided below the high pressure rod, the guide rod is fixedly connected to the bottom surface of the pad, the guide rod passes through the crank arm, an adjustment spring is sleeved on the guide rod, the spring is located between the pad and the crank arm, and the lower end of the guide rod extends out of the crank arm and is threadedly connected to the adjustment nut. The compression degree of the spring can be adjusted by adjusting the nut, thereby changing the size of the spring's top tightening force, so that the pad generates a top tightening force on the film, so that the film and the pressure rod are effectively in contact. When the two pressure rods fall, the film will be pressed to the position of the blade, and the film will be cut by cooperating with the blade.

[0012] Preferably, the film-releasing mechanism comprises a film-standing bracket connected to the base, a film-releasing roller is rotatably connected to the film-standing bracket, a film roll is mounted on the film-releasing roller, and a film-standing bracket is connected to a film output guiding mechanism; the film output guiding mechanism comprises an upper end plate and a lower end plate, both of which are hinged to the film-standing bracket, the upper end plate and the lower end plate are connected by a support rod, a tensioning roller and a guide roller are arranged between the upper end plate and the lower end plate, both of which are connected to the upper end plate and the lower end plate by bearings; a large gear is connected to the tensioning roller, and a small gear is connected to the guide roller, and the large gear and the small gear are meshed; the support rod is connected to the film-standing bracket by a tensioning spring so that the tensioning roller presses the film roll tightly. During the output process, the film first passes through the tensioning roller and then the guide roller. The gears connected to the tensioning roller and the guide roller are of different sizes. The guide roller rotates fast and the tensioning roller rotates slowly. The film is output slowly when passing through the tensioning roller and quickly when passing through the guide roller. The different output speeds will generate tensioning force on the film, making the film reach a taut state and increasing the density during wrapping.

[0013] Preferably, the driving mechanism includes two hydraulic motors, which are respectively installed on two groups of material block carrying devices, the hydraulic motors are fixed to the L-shaped connecting plate, a driving gear is installed on the output shaft of the hydraulic motor, and a driven gear is installed on each upper roller and each lower roller. The driving gear on each hydraulic motor drives an upper roller and a lower roller to rotate synchronously in the same direction through a chain transmission.

[0014] Preferably, the turntable and the base are connected via a bearing, the power mechanism is an electric motor, the housing of the electric motor is fixed to the base, and the output shaft of the electric motor passes through the base and is connected to the turntable. The turntable rotates under the drive of the electric motor.

[0015] As a preferred method, a hydraulic rotary joint is installed on the turntable, the input end of the hydraulic rotary joint is connected to the pump station, and the output end of the hydraulic rotary joint is connected to the hydraulic motor, the lifting cylinder and the film cutting cylinder through the inlet and outlet pipes. The hydraulic rotary joint is an existing structure, and the hydraulic rotary joint is a rotary joint specially used for low-speed, high-pressure, multi-media and multi-channel equipment.

[0016] In a second aspect of the present invention, a method for using the square bundle wrapping device is provided, comprising the following steps:

[0017] (1) The pallets of the two sets of lifting material receiving mechanisms are lifted up, and the square bundle falls on the two pallets. After receiving the materials, the pallets are gradually retracted, so that the square bundle gradually falls on the two upper rollers and the two lower rollers;

[0018] (2) The end of the film of the film-releasing mechanism is pressed by the pressure rod of the film-cutting mechanism in advance;

[0019] (3) Start the power mechanism and the driving mechanism, the turntable carrying the two sets of material block bearing devices and the film cutting mechanism rotates, and the two upper rollers and the two lower rollers also start to rotate; the turntable realizes the axial rotation of the square bale, and the circumferential rotation of the square bale is realized synchronously through the cooperation of the two upper rollers and the two lower rollers;

[0020] (4) The film cutting mechanism presses the end of the film and pulls the film as the turntable rotates to unwind the film, during which the film is wound onto the square bundle;

[0021] (5) After the film is wound several times, the film-breaking cylinder is controlled to lift the two pressure rods to a certain height, thereby releasing the pressure on the end of the film; as the turntable continues to rotate, the film is wound around the square bundle in circles;

[0022] (6) When the film wrapping is nearly completed, the film-cutting cylinder is controlled to fully lift the two pressure rods and then drop them. As the two pressure rods drop, the film is pressed to the position of the blade, and the blade cuts the film into segments. As the turntable continues to rotate, the end of the film connected to the square bundle is wound onto the square bundle, and the end of the film connected to the film-releasing mechanism is pressed by the high pressure rod to facilitate the next film wrapping;

[0023] (7) After the film coating is completed, the turntable stops rotating and the square bundle is transferred by a forklift.

[0024] The beneficial effects of the present invention are:

[0025] 1. This application is applied to square bale wrapping film, which has the advantages of tight and strict wrapping, high operating efficiency and low labor intensity for workers, effectively filling the market gap.

[0026] 2. The turntable realizes the axial rotation of the square bale. At the same time, the two upper rollers and the two lower rollers cooperate to realize the circumferential rotation of the square bale. The combination of axial rotation and circumferential rotation can ensure that all parts of the square bale are tightly wrapped by the film.

[0027] 3. The lines connecting the first hinge point, the second hinge point, the third hinge point and the fourth hinge point form a quadrilateral. When the length of the two-way threaded adjustment rod is adjusted, the square bale rotates circumferentially under the drive of the two upper rollers and the two lower rollers. The center of gravity of the corresponding square bale shifts accordingly. Under the action of the gravity of the square bale, the quadrilateral formed by the four hinge points will undergo an adaptive change in angle, so that the upper roller and the lower roller are always in contact with the square bale, increasing the tightness of the subsequent wrapping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the working state of the present invention when receiving materials through a tray;

[0029] Figure 2 yes Figure 1 A schematic diagram of the partially enlarged structure at B in the middle;

[0030] Figure 3 It is a schematic diagram of the working state of the present invention when the upper roller and the lower roller receive the material;

[0031] Figure 4 It is a schematic structural diagram of the lifting material receiving mechanism of the present invention in the lifting state;

[0032] Figure 5 This is a schematic diagram of the structure of the lifting material receiving mechanism of the present invention in the falling state;

[0033] Figure 6 This is a schematic diagram of the structure of the film cutting mechanism of the present invention in the falling state;

[0034] Figure 7 It is a schematic structural diagram of the film cutting mechanism of the present invention in a raised state;

[0035] Figure 8 yes Figure 6 Middle AA section view;

[0036] Fig. 9 This is a schematic diagram of the front view structure of the membrane support of the present invention;

[0037] Fig.10 It is a front view structural schematic diagram of the film output guide mechanism of the present invention;

[0038] Fig.11 It is a schematic diagram of the top view of the structure after the film support and the film output guide mechanism of the present invention are assembled;

[0039] Fig.12 It is a schematic diagram of the direction of the film of the present invention when passing through the film output guide mechanism;

[0040] As shown in the figure:

[0041] 1. Base, 2. Turntable, 3. Motor, 4. Second connection part, 5. First connection part, 6. Upper swing arm, 7. Lower swing arm, 8. Two-way thread adjustment rod, 9. Upper roller, 10. Lower roller, 11. Second hinge point, 12. Fourth hinge point, 13. First hinge point, 14. Third hinge point, 15. Hydraulic motor, 16. Mounting plate, 17. Pallet, 18. Roller, 19. Film cutting mechanism, 20. Square bundle, 21. Film support, 22. Guide Roller, 23, tensioning roller, 24, film release roller, 25, film roll, 26, large gear, 27, small gear, 28, support rod, 29, lifting cylinder, 30, base, 31, film cutting cylinder, 32, crank arm, 33, pressure plate, 34, swing arm, 35, blade, 36, pressure rod, 37, pad, 38, adjustment spring, 39, guide rod, 40, adjustment nut, 41, upper end plate, 42, lower end plate, 43, support rod, 44, tension spring, 45, film. DETAILED DESCRIPTION

[0042] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0043] like Figure 1 , 2 As shown in Figures 3 and 4, the present invention includes a base 1, a turntable 2 is located above the base 1 and is rotatably connected to the base 1, and a power mechanism for driving the turntable 2 to rotate is installed on the base 1. Two groups of material block bearing devices are provided on the turntable 2, and the two groups of material block bearing devices are symmetrically arranged. Each group of material block bearing devices includes two groups of brackets with the same structure and are respectively arranged on the front and rear sides of the turntable 2, and each group of brackets includes an L-shaped connecting plate, and the L-shaped connecting plate includes a first connecting part 5 and a second connecting part 4, one end of the second connecting part 4 is fixed to the turntable 2, one end of the upper swing arm 6 is hinged to the first connecting part 5, and one end of the lower swing arm 7 is hinged to the second connecting part 4, and the upper swing arm 6 and the lower swing arm 7 are connected by a two-way threaded adjustment rod 8, one end of the two-way threaded adjustment rod 8 is hinged to the upper swing arm 6, and the other end of the two-way threaded adjustment rod 8 is hinged to the lower swing arm 7. The opening between the upper swing arm 6 and the lower swing arm 7 can be adjusted by adjusting the two-way threaded adjustment rod 8.

[0044] The upper rollers 9 are rotatably connected between the two upper swing arms 6 of the front and rear brackets, and both ends of the upper rollers 9 are connected to the upper swing arms 6 through bearings. The lower rollers 10 are rotatably connected between the two lower swing arms 7 of the front and rear brackets, and both ends of the lower rollers 10 are connected to the lower swing arms 7 through bearings. The two upper rollers 9 and the two lower rollers 10 rotate synchronously in the same direction under the drive mechanism.

[0045] The hinge position of the upper swing arm 6 and the first connecting part 5 is the first hinge point 13, the hinge position of the lower swing arm 7 and the second connecting part 4 is the second hinge point 11, the hinge position of the two-way thread adjustment rod 8 and the upper swing arm 6 is the third hinge point 14, and the hinge position of the two-way thread adjustment rod 8 and the lower swing arm 7 is the fourth hinge point 12. The lines connecting the first hinge point 13, the second hinge point 11, the third hinge point 14 and the fourth hinge point 12 form a quadrilateral. When the length of the two-way thread adjustment rod 8 is adjusted, the square bale rotates circumferentially under the drive of the two upper rollers 9 and the two lower rollers 10, and the center of gravity of the corresponding square bale is transferred. Under the action of the gravity of the square bale, the quadrilateral formed by the four hinge points will undergo an adaptive change in angle, so that the upper roller 9 and the lower roller 10 are always in contact with the square bale 20, increasing the tightness of the subsequent film wrapping process.

[0046] The driving mechanism includes two hydraulic motors 15, which are respectively installed on two groups of material block carrying devices. The hydraulic motors 15 are specifically fixed to the L-shaped connecting plate. A driving gear is installed on the output shaft of the hydraulic motor 15, and a driven gear is installed on each upper roller 9 and each lower roller 10. The driving gear on each hydraulic motor 15 drives an upper roller 9 and a lower roller 10 to rotate synchronously in the same direction through a chain transmission.

[0047] like Figure 4 , 5 As shown, a lifting material receiving mechanism is arranged between two groups of brackets of each group of material block bearing device, and the lifting material receiving mechanism includes a tray 17, a roller 18 is arranged on the tray 17, two support rods 28 are hinged on the tray 17, and the lower end of each support rod 28 is hinged to the mounting plate 16, and the mounting plate 16 is connected between the two L-shaped connecting plates of the two groups of brackets. The cylinder barrel of the lifting cylinder 29 is hinged to the mounting plate 16, and the push rod of the lifting cylinder 29 is hinged to the tray 17. Driven by the lifting cylinder 29, the tray 17 can be lifted up. After the tray 17 is lifted up, it is higher than the plane where the upper roller 9 and the lower roller 10 are located. When the tray 17 is retracted, the tray 17 is lower than the plane where the upper roller 9 and the lower roller 10 are located. When the trays 17 of the two groups of lifting material receiving mechanisms are lifted up, the square bundle falls on the two trays 17. After receiving the materials, the trays 17 are gradually retracted, so that the square bundle gradually falls on the two upper rollers 9 and the two lower rollers 10.

[0048] like Figure 6 , 7 As shown, a film cutting mechanism 19 is arranged on the turntable 2, and the film cutting mechanism 19 includes a base 30 connected to the turntable 2, the base 30 is connected to the turntable 2 by bolts, the cylinder of the film cutting cylinder 31 is hinged to the base 30, the push rod of the film cutting cylinder 31 is hinged to one end of a crank arm 32, the inflection point of the crank arm 32 is hinged to the base 30, the other end of the crank arm 32 is hinged to the middle of a pressing plate 33, one end of the pressing plate 33 is connected to two pressing rods 36, the other end of the pressing plate 33 is hinged to a swing arm 34, and the other end of the swing arm 34 is hinged to the base 30. A blade 35 is installed on the crank arm 32, a gap is left between the two pressing rods 36, and the blade 35 passes through the gap when the two pressing rods 36 fall.

[0049] In this embodiment, in order to ensure that the film is effectively cut into segments, Figure 8 As shown, the two pressure rods 36 are one high and one low. When the pressure rods 36 fall, the low pressure rod 36 will first contact the film, thereby generating a certain tension on the film, which is beneficial to the slitting of the film.

[0050] At the same time, in order to make the film contact with the pressure rod 36 effectively and improve the pressing effect, such as Figure 8As shown, a cushion block 37 is arranged below the high pressure rod 36, a guide rod 39 is fixedly connected to the bottom surface of the cushion block 37, the guide rod 39 passes through the crank arm 32, an adjustment spring 38 is sleeved on the guide rod 39, the adjustment spring 38 is located between the cushion block 37 and the crank arm 32, and the lower end of the guide rod 39 extends out of the crank arm 32 and is threadedly connected to the adjustment nut 40. The compression degree of the adjustment spring 38 can be adjusted by adjusting the nut 40, thereby changing the size of the tightening force of the adjustment spring 38, so that the cushion block 37 generates a tightening force on the film, so that the film is effectively in contact with the pressure rod 36. When the two pressure rods 36 fall, the film will be pressed to the position of the blade 35, and the film will be cut by cooperating with the blade 35.

[0051] like Fig. 9 , 10 As shown in , 11 and 12, a film placing mechanism is connected to the base 1, and the film placing mechanism includes a film support 21 connected to the base 1, a film placing roller 24 is rotatably connected to the film support 21, and a film roll 25 is installed on the film placing roller 24. A film output guide mechanism is connected to the film support 21, and the film output guide mechanism includes an upper end plate 41 and a lower end plate 42, both of which are hinged to the film support 21, and the upper end plate 41 and the lower end plate 42 are connected by a support rod 43. A tensioning roller 23 and a guide roller 22 are arranged between the upper end plate 41 and the lower end plate 42, and both of the tensioning roller 23 and the guide roller 22 are connected to the upper end plate 41 and the lower end plate 42 through bearings. A large gear 26 is connected to the tensioning roller 23, and a small gear 27 is connected to the guide roller 22, and the large gear 26 and the small gear 27 are meshed. The support rod 43 is connected to the film support 21 through the tension spring 44 so that the tension roller 23 presses the film roll 25. During the output process, the film 45 first passes through the tension roller 23 and then passes through the guide roller 22. The gears connected to the tension roller 23 and the guide roller 22 are of different sizes. The guide roller 22 rotates fast, and the tension roller 23 rotates slowly. The film 45 is output slowly when passing through the tension roller 23, and is output quickly when passing through the guide roller 22. The different output speeds will generate tensioning force on the film 45, so that the film reaches a taut state and increases the density during winding and wrapping.

[0052] In this embodiment, the turntable 2 and the base 1 are connected by a bearing, the power mechanism is a motor 3, the housing of the motor 3 is fixed to the base 1, and the output shaft of the motor 3 passes through the base 1 and is connected to the turntable 2. The turntable 2 is driven by the motor 3 to rotate.

[0053] A hydraulic rotary joint is installed on the turntable 2, the input end of the hydraulic rotary joint is connected to the pump station, and the output end of the hydraulic rotary joint is connected to the hydraulic motor 15, the lifting cylinder 29 and the film cutting cylinder 31 through the inlet and outlet pipelines. The hydraulic rotary joint is an existing structure, and the hydraulic rotary joint is a rotary joint specially used for low-speed, high-pressure, multi-media, and multi-channel equipment.

[0054] The specific working process is as follows: the trays 17 of the two sets of lifting material receiving mechanisms are all lifted up, and the square bundle falls on the two trays 17. After receiving the materials, the trays 17 are gradually retracted, so that the square bundle gradually falls on the two upper rollers 9 and the two lower rollers 10. The end of the film of the film placing mechanism is pressed by the pressure rod 36 of the film cutting mechanism in advance, and the power mechanism and the driving mechanism are started. The turntable 2 carries the two sets of material block bearing devices and the film cutting mechanism to rotate, and the two upper rollers 9 and the two lower rollers 10 also start to rotate. The turntable 2 realizes the axial rotation of the square bundle. While the square bundle rotates axially, the two upper rollers 9 and the two lower rollers 10 cooperate to realize the circumferential rotation of the square bundle. The film cutting mechanism presses the end of the film and pulls the film as the turntable 2 rotates to realize unwinding. In this process, the film is wound onto the square bundle. After the film is wound several times, the film cutting cylinder 31 is controlled to lift the two pressure rods 36 to a certain height to release the pressure on the end of the film. As the turntable 2 continues to rotate, the film is wound onto the square bundle in circles. When the film wrapping is nearly completed, the film cutting cylinder 31 is controlled to fully lift the two pressure rods 36 and then drop them. As the two pressure rods 36 drop, the film is pressed to the position of the blade 35, and the blade 35 cuts the film into segments. As the turntable 2 continues to rotate, the end of the film connected to the square bundle is wound onto the square bundle, and the end of the film connected to the film placing mechanism is pressed by the high pressure rod 36 to facilitate the next film wrapping. After the film wrapping is completed, the turntable 2 stops rotating and the square bundle is transferred by a forklift.

[0055] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A film wrapping device for silage square bales, characterized in that: The invention comprises a base, a turntable is located above the base and is rotatably connected to the base, and a power mechanism for driving the turntable to rotate is installed on the base; two groups of material block carrying devices are arranged on the turntable, and the two groups of material block carrying devices are symmetrically arranged; each group of material block carrying devices comprises two groups of brackets with the same structure and arranged on the front and rear sides of the turntable respectively, each group of brackets comprises an L-shaped connecting plate, the L-shaped connecting plate comprises a first connecting part and a second connecting part, one end of the second connecting part is fixed to the turntable, one end of the upper swing arm is hinged to the first connecting part, one end of the lower swing arm is hinged to the second connecting part, the upper swing arm and the lower swing arm are connected by a two-way threaded adjustment rod, one end of the two-way threaded adjustment rod is hinged to the upper swing arm, and the other end of the two-way threaded adjustment rod is hinged to the lower swing arm; the upper roller is rotatably connected between the two upper swing arms of the front and rear groups of brackets, and the lower roller is rotatably connected between the two lower swing arms of the front and rear groups of brackets, and the two upper rollers and the two lower rollers rotate synchronously in the same direction under the drive of the driving mechanism; a lifting material receiving mechanism is arranged between the two groups of brackets of each group of material block carrying devices; on the turntable A film cutting mechanism is provided; a film placing mechanism is connected to the base; the lifting material receiving mechanism comprises a tray, a roller is arranged on the tray, two support rods are hinged on the tray, the lower end of each support rod is hinged to the mounting plate, the mounting plate is connected between two L-shaped connecting plates of the two sets of brackets, the cylinder barrel of the lifting cylinder is hinged to the mounting plate, and the push rod of the lifting cylinder is hinged to the tray; the film cutting mechanism comprises a base connected to the turntable, the base and the turntable are connected by bolts, the cylinder barrel of the film cutting cylinder is hinged to the base, and the push rod of the film cutting cylinder is hinged to the crank One end of the arm is hinged, the inflection point of the crank arm is hinged to the base, the other end of the crank arm is hinged to the middle of the pressure plate, one end of the pressure plate is connected to two pressure rods, the other end of the pressure plate is hinged to the swing arm, and the other end of the swing arm is hinged to the base; a blade is installed on the crank arm, a gap is left between the two pressure rods, and the blades pass through the gap when the two pressure rods fall down; the two pressure rods are one high and one low; the turntable and the base are connected by a bearing, the power mechanism is an electric motor, the motor casing is fixed to the base, and the output shaft of the motor passes through the base and is connected to the turntable.

2. The silage square bale wrapping device according to claim 1, characterized in that: A cushion block is arranged under the high pressure rod, the guide rod is fixedly connected to the bottom surface of the cushion block, the guide rod passes through the crank arm, an adjustment spring is sleeved on the guide rod, the spring is located between the cushion block and the crank arm, and the lower end of the guide rod extends out of the crank arm and is threadedly connected with an adjustment nut.

3. The silage square bale wrapping device according to claim 1, characterized in that: The film-laying mechanism comprises a film-standing bracket connected to the base, a film-laying roller is rotatably connected to the film-standing bracket, a film roll is mounted on the film-laying roller, and a film-standing bracket is connected to a film output guide mechanism; the film output guide mechanism comprises an upper end plate and a lower end plate, both of which are hinged to the film-standing bracket, and the upper end plate and the lower end plate are connected by a support rod, a tensioning roller and a guide roller are arranged between the upper end plate and the lower end plate, and both of the tensioning roller and the guide roller are connected to the upper end plate and the lower end plate by bearings; a large gear is connected to the tensioning roller, and a small gear is connected to the guide roller, and the large gear and the small gear are meshed; the support rod is connected to the film-standing bracket by a tensioning spring so that the tensioning roller presses the film roll.

4. The silage square bale wrapping device according to claim 1, characterized in that: The driving mechanism includes two hydraulic motors, which are respectively installed on two groups of material block carrying devices. The hydraulic motors are fixed to the L-shaped connecting plate. A driving gear is installed on the output shaft of the hydraulic motor, and a driven gear is installed on each upper roller and each lower roller. The driving gear on each hydraulic motor drives an upper roller and a lower roller to rotate synchronously in the same direction through a chain transmission.

5. The silage square bale wrapping device according to claim 4, characterized in that: A hydraulic rotary joint is installed on the turntable, the input end of the hydraulic rotary joint is connected to the pump station, and the output end of the hydraulic rotary joint is connected to the hydraulic motor, the lifting cylinder and the film cutting cylinder through the inlet and outlet pipelines.

6. The method for using the square bale wrapping device according to any one of claims 1 to 5, characterized in that: The following steps are involved: (1) The pallets of the two sets of lifting material receiving mechanisms are lifted up, and the square bale falls on the two pallets. After receiving the material, the pallets are gradually retracted, so that the square bale gradually falls on the two upper rollers and the two lower rollers; (2) The end of the film of the film-releasing mechanism is pressed in advance by the pressure rod of the film-cutting mechanism; (3) Start the power mechanism and the driving mechanism, the turntable carrying the two sets of material block bearing devices and the film cutting mechanism rotates, and the two upper rollers and the two lower rollers also start to rotate; the turntable realizes the axial rotation of the square bale, and the circumferential rotation of the square bale is realized synchronously through the cooperation of the two upper rollers and the two lower rollers; (4) The film cutting mechanism presses the end of the film and pulls the film as the turntable rotates to unwind it, during which the film is wound onto the square bundle; (5) After the film is wound several times, the film-breaking cylinder is controlled to lift the two pressure rods to a certain height, thereby releasing the pressure on the end of the film; as the turntable continues to rotate, the film is wound around the square bundle in circles; (6) When the film wrapping is close to completion, the film-cutting cylinder is controlled to fully lift the two pressure rods and then drop them. As the two pressure rods drop, the film is pressed to the blade position, and the blade cuts the film into segments. As the turntable continues to rotate, the end of the film connected to the square bundle is wound onto the square bundle, and the end of the film connected to the film unwinding mechanism is pressed by the high pressure rod to facilitate the next film wrapping; (7) After the wrapping is completed, the turntable stops rotating and the square bundle is transferred by a forklift.

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