CN219352420U - Swing type bale wrapping machine - Google Patents

Abstract

The application provides a swinging type bale wrapping machine, which comprises a workbench, a motor, a rack, a swinging type carrier roller mechanism, a rocker arm mechanism, a film supply mechanism and a chain transmission mechanism; the swinging type carrier roller mechanism is arranged on the workbench and comprises two carrier roller units which are symmetrically arranged, each carrier roller unit comprises two carrier rollers which are arranged in parallel, and two ends of the two carrier rollers are respectively connected by two carrier roller swinging frames; the two ends of each carrier roller are provided with first rotating shafts, and four first rotating shafts close to the inner side of a workbench are driven to rotate by a chain transmission mechanism, and the chain transmission mechanism is driven by a motor; the rocker arm mechanism is vertically arranged at one end of the frame, and the film supply mechanism is arranged on a rocker arm of the rocker arm mechanism; the utility model discloses a through swing formula bearing roller mechanism, can realize that the bale winds its axis rotation, and can adapt to the bale of various sizes.

Description

Swing type bale wrapping machine

Technical Field

The application belongs to the technical field of agricultural machinery, and particularly relates to a swinging type bale wrapping machine.

Background

Along with the rapid development of Chinese economy, the animal husbandry is rapidly developed, the demand for pasture is increased year by year, natural pasture is far from meeting the requirement of the rapid development of the animal husbandry, meanwhile, the crop straw yield is continuously increased, the straw high-value recycling utilization rate is low, a large amount of straw is still used as waste to burn in fields to cause environmental pollution, and the straw forage is used as a straw comprehensive utilization mode to effectively solve the pollution problem and improve the added value of agricultural production.

The method has the advantages that the method needs to carry out coating treatment on the beaten straw bales in the crop straw forage conversion process, the existing coating equipment is generally only applicable to round bale coating, cannot be used for square bale coating, and the defects of insufficient coating and low operation efficiency exist in the coating of small parts of square bales.

Disclosure of Invention

Aiming at the technical problems, the application provides the swinging type bale wrapping machine which has good adaptation effect, tight wrapping and high operation efficiency.

The aim of the application is achieved by the following technical scheme:

the swinging type bale wrapping machine comprises a workbench, a motor, a frame, a swinging type carrier roller mechanism, a rocker arm mechanism, a film feeding mechanism and a chain transmission mechanism, wherein the workbench is arranged on the frame; the workbench is a U-shaped frame and comprises a first vertical plate and a second vertical plate, the swinging type carrier roller mechanism is arranged between the first vertical plate and the second vertical plate and comprises two carrier roller units which are symmetrically arranged, and the two carrier roller units are connected through swinging carrier roller springs; the two ends of each carrier roller unit are connected with the first vertical plate and the second vertical plate through the second rotating shaft; each carrier roller unit comprises two carrier rollers which are arranged in parallel, two ends of each carrier roller are respectively connected by two carrier roller swinging frames, and each carrier roller swinging frame is in a V shape; the two ends of each carrier roller are provided with first rotating shafts, wherein four first rotating shafts close to the inner side of the first vertical plate are driven to rotate by a chain transmission mechanism arranged on the first vertical plate, and the chain transmission mechanism is driven by a motor; the rocker arm mechanism is vertically arranged at one end of the frame, and the film supply mechanism is arranged on a rocker arm of the rocker arm mechanism; when the device is used, the two carrier roller units symmetrically move through the swinging carrier roller springs according to the size of the bales, the spacing between the four carrier rollers is adjusted, and the bales are placed on the four carrier rollers after adjustment; the four carrier rollers rotate to drive the bale to rotate around the axis of the bale, and meanwhile, the rocker arm drives the stretching film on the film feeding mechanism to revolve around the bale to carry out bale wrapping.

Further, the chain transmission mechanism comprises a first double-row chain wheel, two second double-row chain wheels, two first single-row chain wheels and four second single-row chain wheels, wherein the first double-row chain wheels are arranged on an output shaft of the motor at the outer side of the first vertical plate; the two second double-row chain wheels are respectively provided with one end of two second rotating shafts on the inner side of the first vertical plate, and the two first single-row chain wheels are respectively provided with one end of the second rotating shaft of each carrier roller unit on the outer side of the first vertical plate; the four second single-row chain wheels are respectively arranged on four first rotating shafts on the inner sides of the first vertical plates; the first double-row chain wheels are respectively connected with the two first single-row chain wheels through chains, and the second double-row chain wheels on each carrier roller unit are respectively connected with the two second single-row chain wheels through chains.

Further, the rocker arm mechanism comprises a rocker arm, a rocker arm supporting frame and a gear motor, wherein the rocker arm and the rocker arm supporting frame are in an inverted L shape, the rocker arm supporting frame is vertically arranged on the frame, the gear motor is arranged at the top end of the rocker arm supporting frame, and one end of the rocker arm is connected with an output shaft of the gear motor.

Further, a fixed bottom plate is arranged at the bottom end of the rocker arm support frame, and the rocker arm support frame is connected with the frame through the fixed bottom plate; reinforcing ribs are arranged at the corners between the rocker arm support frames and the fixed bottom plate at intervals; the top of rocking arm support frame is provided with the mounting panel, gear motor sets up on the mounting panel.

Further, the film supply mechanism comprises an upper film supporting roller, a lower film supporting roller, a film supporting roller fixing plate and an adjustable supporting frame, wherein the adjustable supporting frame is of a frame structure with one end being open, the adjustable supporting frame is connected with a rocker arm, the two film supporting roller fixing plates are arranged on the supporting frame in an up-down parallel mode, and the upper film supporting roller and the lower film supporting roller are oppositely arranged on the two film supporting roller fixing plates.

Further, two film supply roller fixing plates which are parallel up and down are also arranged on the adjustable support frame, two film supply rollers are arranged between the film supply roller fixing plates, and the two film supply rollers are rotatably connected with the film supply roller fixing plates; the two film supply rollers are respectively provided with a large gear and a small gear which are meshed with each other.

Further, still include the press mold and cut membrane mechanism, the press mold is cut membrane mechanism and is included mounting bracket, serrated knife, connecting rod and support frame, the mounting bracket sets up on the second riser, the support frame sets up on the mounting bracket, is fixed with first connecting block on the support frame, the one end of connecting rod with first connecting block articulates, serrated knife sets up in the below of connecting rod.

Further, a film cutting frame which is horizontally arranged is further arranged on the mounting frame, two film pressing and cutting springs are arranged on the upper end face of the film cutting frame, and the bottom end face of the saw-tooth knife is connected with the top ends of the two film pressing and cutting springs; the support frame is further provided with a second connecting block, the second connecting block is hinged with a film pressing rod opening and closing oil cylinder, the other end of the film pressing rod opening and closing oil cylinder is hinged with a film pressing rod, and the middle front part of the film pressing rod is hinged with the other end of the connecting rod.

Further, an adjustable mounting hole is formed in the mounting frame, and the mounting frame is connected with the second vertical plate through the adjustable mounting hole.

Further, the swing type carrier roller mechanism is provided with stop device below, and stop device includes PMKD and spacing post, PMKD and workstation fixed connection, and the last spacing hole that is equipped with of PMKD, two spacing posts set up respectively in swing type carrier roller mechanism's both ends, and the bottom of spacing post sets up inside spacing hole.

Further, the two carrier roller swinging frames of each carrier roller unit are symmetrically arranged, and the two carrier rollers are respectively connected with the two end parts of each carrier roller swinging frame; the section of the carrier roller is a polygon with side lines recessed inwards to form an arc; the first rotating shaft of each carrier roller is connected with the carrier roller swinging frame through a rolling bearing; two ends of each swinging carrier roller spring are respectively connected with one end of a carrier roller swinging frame of each carrier roller unit.

Further, the section of the carrier roller is a decagon with the side line recessed inwards to form an arc.

Further, the workbench further comprises a connecting plate for connecting the first vertical plate and the second vertical plate, the workbench is arranged on the frame through the connecting plate, and the motor is arranged on the connecting plate.

The beneficial effects of this application are:

through swing formula bearing roller mechanism, can realize that the bale is around its axis rotation, and can adapt to the bale of various sizes, make the diolame work go on smoothly through the rotation of the membrane of supplying membrane mechanism and rocking arm mechanism, the parcel is tight, and operating efficiency is high, and degree of automation is high, uses manpower sparingly material resources.

Drawings

Fig. 1 is a schematic view of the overall structure of a swing type bale wrapping machine according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a swinging carrier roller mechanism provided in an embodiment of the present application;

fig. 3 is a schematic structural view of a rocker arm mechanism according to an embodiment of the present application;

FIG. 4 is a schematic view of a film feeding mechanism according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a film pressing and cutting mechanism according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a limiting device according to an embodiment of the present application;

fig. 7 is a schematic diagram of the structure at a in fig. 1.

In the figure:

1, a swinging type carrier roller mechanism; 1-1 carrier roller; 1-2 rolling bearings; 1-3 carrier roller swinging frames; swinging 1-4 carrier roller springs;

2 a rocker arm mechanism; 2-1 rocker arms; 2-2 rocker arm support frames; 2-3 reducing motor; 2-4 mounting plates; 2-5 fixing the bottom plate; 2-6 reinforcing ribs;

3 a film feeding mechanism; 3-1 supporting a film roller; 3-2, a film supporting roller; 3-3 supporting film roller fixing plates; 3-4 film supply rollers; 3-5 film supply roller fixing plates; 3-6 adjustable support frames; 3-7 large gears; 3-8 pinion gears;

4, film pressing and cutting mechanisms; 4-1 mounting frame; 4-2 film pressing and cutting springs; 4-3 film cutting frames; 4-4 serrated knife; 4-5 film pressing rods; 4-6 connecting rods; 4-7, an opening and closing cylinder of a film pressing rod; 4-8 first connecting blocks; 4-9 second connecting blocks; 4-10 supporting frames;

5 a limiting device; 5-1, fixing the bottom plate; 5-2 limit column: 5-3 limiting holes;

6 a chain transmission mechanism; 6-1 a first sprocket; 6-2 a second sprocket; 6-3 a third sprocket; 6-4 fourth sprocket; 6-5 fifth sprocket; 6-6 sixth sprocket; 6-7 seventh sprocket; 6-8 first chains; 6-9 second chain; 6-10 third chains; 6-11 fourth chains;

7, a workbench; 7-1 a first riser; 7-2 a second riser; 7-3 connecting plates;

8, a motor; and 9, a frame.

Detailed Description

The present application is described in detail below with reference to the accompanying drawings and examples.

Fig. 1 is a schematic view of the overall structure of a swing type bale wrapping machine according to an embodiment of the present application; as shown in fig. 1, the embodiment of the application provides a swinging type bale wrapping machine, which comprises a workbench 7, a motor 8 and a rack 9, wherein the workbench 7 is arranged on the rack 9, the motor 8 is arranged on the workbench 7, and the swinging type bale wrapping machine further comprises a swinging type carrier roller mechanism 1, a rocker arm mechanism 2, a film supply mechanism 3 and a chain transmission mechanism 6; the workbench 7 is a U-shaped frame and comprises a first vertical plate 7-1 and a second vertical plate 7-2, the swinging type carrier roller mechanism 1 is arranged between the first vertical plate 7-1 and the second vertical plate 7-2 and comprises two symmetrically arranged carrier roller units, and two ends of each carrier roller unit are connected with the first vertical plate 7-1 and the second vertical plate 7-2 through a second rotating shaft 6-5; the carrier roller units are V-shaped, and the two carrier roller units are connected through the swinging carrier roller springs 1-4; each carrier roller unit comprises two carrier rollers 1-1 which are arranged in parallel, two ends of the two carrier rollers 1-1 are respectively connected by two carrier roller swinging frames 1-3, and the carrier roller swinging frames 1-3 are V-shaped; the two ends of each carrier roller 1-1 are provided with first rotating shafts, wherein four first rotating shafts close to the inner side of the first vertical plate 7-1 are driven to rotate by a chain transmission mechanism 6 arranged on the first vertical plate 7-1, and the chain transmission mechanism 6 is driven by a motor 8; the rocker arm mechanism 2 is vertically arranged at one end of the frame 9, and the film supply mechanism 3 is arranged on the rocker arm 2-1 of the rocker arm mechanism 2.

When the device is used, the two carrier roller units symmetrically move through the swinging carrier roller springs 1-4 according to the size of the bales, the spacing between the four carrier rollers 1-1 is adjusted, and the bales are placed on the four adjusted carrier rollers 1-1; the four carrier rollers 1-1 rotate to drive the bale to rotate around the axis of the bale, and meanwhile, the rocker arm 2-1 drives the stretching film on the film feeding mechanism 3 to revolve around the bale to carry out bale wrapping.

Further, as shown in fig. 2, two carrier roller swinging frames 1-3 of each carrier roller unit are symmetrically arranged, two carrier rollers 1-1 are arranged between the two carrier roller swinging frames 1-3, and the two carrier rollers 1-1 are respectively connected with two end parts of each carrier roller swinging frame 1-3; the section of the carrier roller 1-1 is polygonal, the side line of which is inwards recessed into an arc, and preferably, the section of the carrier roller 1-1 can be decagon, the side line of which is inwards recessed into an arc; the first rotating shaft of each carrier roller 1-1 is connected with a carrier roller swinging frame 1-3 through a rolling bearing 1-2; two ends of each swinging carrier roller spring 1-4 are respectively connected with one end of the carrier roller swinging frames 1-3 of the two carrier roller units.

Specifically, through holes are formed at both ends and corners of the carrier roller swinging frame 1-3, and the first rotating shaft is connected with the through holes at both ends of the carrier roller swinging frame 1-3 through the rolling bearings 1-2.

Further, as shown in fig. 3, the rocker arm mechanism 2 includes a rocker arm 2-1, a rocker arm support frame 2-2 and a gear motor 2-3, the rocker arm 2-1 and the rocker arm support frame 2-2 are both in inverted L shape, the rocker arm support frame 2-2 is vertically arranged on the frame 9, the gear motor 2-3 is arranged at the top end of the rocker arm support frame 2-2, and one end of the rocker arm 2-1 is connected with an output shaft of the gear motor 2-3.

Further, the bottom end of the rocker arm support frame 2-2 is provided with a fixed bottom plate 2-5, and the rocker arm support frame 2-2 is connected with the frame 9 through the fixed bottom plate 2-5; reinforcing ribs 2-6 are arranged at intervals at the corners between the rocker arm support frames 2-2 and the fixed bottom plates 2-5; the top end of the rocker arm support frame 2-2 is provided with a mounting plate 2-4, and the gear motor 2-3 is arranged on the mounting plate 2-4. The structure of the rocker arm support frame is more stable through the design.

Further, as shown in fig. 4, the film feeding mechanism 3 includes an upper film supporting roller 3-1, a lower film supporting roller 3-2, a film supporting roller fixing plate 3-3 and an adjustable supporting frame 3-6, wherein the adjustable supporting frame 3-6 is a frame structure with one end open, the adjustable supporting frame 3-6 is connected with a rocker arm 2-1, the two film supporting roller fixing plates 3-3 are vertically arranged on the adjustable supporting frame 3-6 in parallel, and the upper film supporting roller 3-1 and the lower film supporting roller 3-2 are oppositely arranged on the two film supporting roller fixing plates 3-3, and are used for installing a film roll therebetween; specifically, the lower film supporting roller 3-2 is fixedly arranged on the upper surface of the film supporting roller fixing plate 3-3 positioned below, and the upper film supporting roller 3-1 is connected with the film supporting roller fixing plate 3-3 positioned above through a fixing bolt.

Further, two film supply roller fixing plates 3-5 which are parallel up and down are also arranged on the adjustable support frame 3-6, two film supply rollers 3-4 are arranged between the film supply roller fixing plates 3-5, and the two film supply rollers 3-4 are rotatably connected with the film supply roller fixing plates 3-5; the two film supply rollers 3-4 are respectively provided with a large gear 3-7 and a small gear 3-8 which are meshed with each other.

It should be noted that, because the large gear 3-7 and the small gear 3-8 are not the same size, the film will be elongated at a certain ratio after passing through the two film supply rollers 3-4, and the film will be retracted after wrapping on the square bale, so that the bale is compact, and the use of the stretched film can be saved, and the cost is saved.

Further, as shown in fig. 5, the embodiment further includes a film pressing and cutting mechanism 4, the film pressing and cutting mechanism 4 includes a mounting frame 4-1, a serrated knife 4-4, a connecting rod 4-6 and a supporting frame 4-10, the mounting frame 4-1 is arranged on a second vertical plate 7-2, the supporting frame 4-10 is arranged on the mounting frame 4-1, a first connecting block 4-8 is fixed on the supporting frame 4-10, one end of the connecting rod 4-6 is hinged with the first connecting block 4-8, the serrated knife 4-4 is arranged below the connecting rod 4-6, and the film is conveniently cut off after the film coating is finished.

Further, a film cutting frame 4-3 which is horizontally arranged is further arranged on the mounting frame 4-1, two film pressing and film cutting springs 4-2 are arranged on the upper end face of the film cutting frame 4-3, and the bottom end face of the saw tooth knife 4-4 is connected with the top ends of the two film pressing and film cutting springs 4-2; the support frame 4-10 is also provided with a second connecting block 4-9, the second connecting block 4-9 is hinged with a film pressing rod opening and closing cylinder 4-7, the other end of the film pressing rod opening and closing cylinder 4-7 is hinged with a film pressing rod 4-5, and the middle front part of the film pressing rod 4-5 is hinged with the other end of the connecting rod 4-6. This design is through the adjustment of two press mold cutting membrane springs, avoids appearing the gap between connecting rod and the saw tooth sword, opens and shuts the cooperation of hydro-cylinder and press mold pole through the press mold pole for cut membrane work labour saving and time saving more.

In one embodiment, the mounting frame 4-1 is provided with an adjustable mounting hole, the mounting frame 4-1 is connected with the second vertical plate 7-2 through the adjustable mounting hole, and the height of the film pressing and cutting mechanism can be adjusted according to actual conditions.

Further, as shown in fig. 6, a limiting device 5 is arranged below the swinging carrier roller mechanism 1, the limiting device 5 comprises a fixed bottom plate 5-1 and limiting columns 5-2, the fixed bottom plate 5-1 is fixedly connected with a workbench 7, limiting holes 5-3 are formed in the fixed bottom plate 5-1 at intervals, two limiting columns 5-2 are respectively arranged at two ends of the swinging carrier roller mechanism 1, the bottom ends of the limiting columns 5-2 are arranged inside the limiting holes 5-3, and the square bales are prevented from moving along the direction of a rotating shaft.

Alternatively, the fixed bottom plate 5-1 may be provided between 1 and 8, and both ends thereof are fixed to the first riser 7-1 and the second riser 7-2, respectively.

Further, as shown in fig. 6, the workbench 7 further comprises a connecting plate 7-3 for connecting the first riser 7-1 and the second riser 7-2, the workbench 7 is arranged on the frame 9 through the connecting plate 7-3, and the motor 8 is arranged on the connecting plate 7-3.

Further, as shown in fig. 7, the chain transmission mechanism 6 includes a first double-row sprocket 6-1, two second double-row sprockets 6-2, two first single-row sprockets 6-3 and four second single-row sprockets 6-4, wherein the first double-row sprocket 6-1 is arranged on an output shaft of the motor 8 outside the first riser 7-1; the two second double-row chain wheels 6-2 are respectively provided with one end of the two second rotating shafts 6-5 on the inner side of the first vertical plate 7-1, and the two first single-row chain wheels 6-3 are respectively provided with one end of the second rotating shaft 6-5 of each carrier roller unit on the outer side of the first vertical plate 7-1; the four second single-row chain wheels 6-4 are respectively arranged on four first rotating shafts on the inner side of the first vertical plate 7-1; the first double-row chain wheels 6-1 are respectively connected with the two first single-row chain wheels 6-3 through chains, and the second double-row chain wheels 6-2 on each carrier roller unit are respectively connected with the two second single-row chain wheels 6-4 through chains.

Specifically, a through hole corresponding to the output shaft of the motor 8 is formed in the first vertical plate 7-1 of the workbench 7, and the output shaft of the motor penetrates to the outer side of the first vertical plate 7-1 and is connected with the first double-row chain wheel 6-1; two through holes which are symmetrically arranged are respectively arranged on the upper parts of the first vertical plate 7-1 and the second vertical plate 7-2 of the workbench 7, and each through hole is respectively connected with the through holes at the corners of the four carrier roller swinging frames 1-3 through a second rotating shaft 6-5.

When the device is used, according to the size of a square bale, the two carrier roller swinging frames 1-3 are symmetrically moved through the swinging carrier roller springs 1-4 in the swinging carrier roller mechanism 1, the distance between the four carrier rollers 1-1 is adjusted, the square bale is placed on the four carrier rollers 1-1 after adjustment, a connector of a stretching film of the film feeding mechanism 3 on the rocker arm 2-1 passes through the film feeding roller 3-4 and then presses the film on the bale, the motor 8 acts on the chain transmission mechanism 6 to enable the carrier rollers 1-1 to rotate, the square bale is driven to rotate around the axis of the square bale under the action of the swinging carrier roller springs 1-4 of the swinging carrier roller mechanism 1, and meanwhile, the speed reducing motor 2-3 of the rocker arm mechanism 2 is started to enable the rocker arm 2-1 to revolve around the square bale with the stretching film on the film feeding mechanism 3; the stretched film is led out after bypassing a film supply roller 3-4 on the film supply mechanism 3, so that the stretched film has certain elongation and tension, and the film coating is more fastened; after the stretching film is wound on the square bale for two weeks, the stretching film is fixed on the square bale, at the moment, the film pressing rod opening and closing cylinder 4-7 of the film pressing and cutting mechanism 4 acts to drive the film pressing rod 4-5 to lift upwards, the stretching film is cut off and released, and the stretching film with certain tension and elongation is wound on the square bale by utilizing the rotation movement of the square bale and the revolution movement of the stretching film. In the coating process, the stretching film and the square bale of the film feeding mechanism 3 on the rocker arm 2-1 simultaneously revolve and rotate, the revolution plane and the rotation plane are mutually perpendicular, when the stretching film rotates for one circle, the square bale correspondingly rotates for one angle, the stretching film and the first circle have a certain degree of overlapping when rotating for the second circle, and then the stretching film continuously rotates until the number of coating layers is reached, so that one-time coating operation is completed.

The utility model provides a through swing formula bearing roller mechanism, can realize square bale around its axis rotation, and can adapt to the square bale of various sizes, make the diolame work go on smoothly through the rotation of the confession membrane of confession membrane mechanism and rocking arm mechanism, the parcel is tight, and the operating efficiency is high, and degree of automation is high, uses manpower sparingly material resources. Of course, the present application is equally applicable to round bales.

It will be appreciated that the above specific descriptions of the present application are provided only for illustrating the present application and not for limiting the technical solutions described in the embodiments of the present application, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use needs are satisfied, all are within the scope of protection of the present application.

Claims (10)

1. The utility model provides a swing type bale wrapping machine, includes workstation (7), motor (8) and frame (9), and workstation (7) set up on frame (9), and motor (8) set up on workstation (7), its characterized in that: the device also comprises a swinging type carrier roller mechanism (1), a rocker arm mechanism (2), a film supply mechanism (3) and a chain transmission mechanism (6); the workbench (7) is a U-shaped frame and comprises a first vertical plate (7-1) and a second vertical plate (7-2), the swinging type carrier roller mechanism (1) is arranged between the first vertical plate (7-1) and the second vertical plate (7-2) and comprises two carrier roller units which are symmetrically arranged, and the two carrier roller units are connected through a swinging carrier roller spring (1-4); two ends of each carrier roller unit are connected with the first vertical plate (7-1) and the second vertical plate (7-2) through the second rotating shaft (6-5); each carrier roller unit comprises two carrier rollers (1-1) which are arranged in parallel, two ends of each carrier roller (1-1) are respectively connected by two carrier roller swinging frames (1-3), and each carrier roller swinging frame (1-3) is in a V shape; the two ends of each carrier roller (1-1) are provided with first rotating shafts, wherein four first rotating shafts close to the inner side of the first vertical plate (7-1) are driven to rotate by a chain transmission mechanism (6) arranged on the first vertical plate (7-1), and the chain transmission mechanism (6) is driven by a motor (8); the film feeding mechanism is characterized in that the rocker arm mechanism (2) is vertically arranged at one end of the frame (9), the film feeding mechanism (3) is arranged on a rocker arm (2-1) of the rocker arm mechanism (2), and the rocker arm (2-1) drives the film feeding mechanism (3) to revolve around the swing type carrier roller mechanism (1); when the device is used, the two carrier roller units symmetrically move through the swinging carrier roller springs (1-4) according to the size of the bales, the spacing between the four carrier rollers (1-1) is adjusted, and the bales are placed on the four adjusted carrier rollers (1-1); the four carrier rollers (1-1) rotate to drive the bale to rotate around the axis of the bale, and meanwhile, the rocker arm (2-1) drives the stretching film on the film feeding mechanism (3) to revolve around the bale to carry out bale wrapping.

2. The film coating machine according to claim 1, wherein: the chain transmission mechanism (6) comprises a first double-row chain wheel (6-1), two second double-row chain wheels (6-2), two first single-row chain wheels (6-3) and four second single-row chain wheels (6-4), wherein the first double-row chain wheels (6-1) are arranged on an output shaft of a motor (8) at the outer side of a first vertical plate (7-1); the two second double-row chain wheels (6-2) are respectively provided with one end of two second rotating shafts (6-5) on the inner side of the first vertical plate (7-1), and the two first single-row chain wheels (6-3) are respectively arranged on one end of the second rotating shaft (6-5) of each carrier roller unit on the outer side of the first vertical plate (7-1); the four second single-row chain wheels (6-4) are respectively arranged on the four first rotating shafts at the inner sides of the first vertical plates (7-1); the first double-row chain wheels (6-1) are respectively connected with the two first single-row chain wheels (6-3) through chains, and the second double-row chain wheels (6-2) on each carrier roller unit are respectively connected with the two second single-row chain wheels (6-4) through chains.

3. The film coating machine according to claim 1, wherein: the rocker arm mechanism (2) comprises a rocker arm (2-1), a rocker arm supporting frame (2-2) and a gear motor (2-3), wherein the rocker arm (2-1) and the rocker arm supporting frame (2-2) are in inverted L shape, the rocker arm supporting frame (2-2) is vertically arranged on a frame (9), the gear motor (2-3) is arranged at the top end of the rocker arm supporting frame (2-2), and one end of the rocker arm (2-1) is connected with an output shaft of the gear motor (2-3).

4. The film coating machine according to claim 1, wherein: the film feeding mechanism (3) comprises an upper film supporting roller (3-1), a lower film supporting roller (3-2), a film supporting roller fixing plate (3-3) and an adjustable supporting frame (3-6), wherein the adjustable supporting frame (3-6) is of a frame structure with one end being open, the adjustable supporting frame (3-6) is connected with a rocker arm (2-1), the two film supporting roller fixing plates (3-3) are arranged on the adjustable supporting frame (3-6) in an up-down parallel mode, and the upper film supporting roller (3-1) and the lower film supporting roller (3-2) are oppositely arranged on the two film supporting roller fixing plates (3-3).

5. The film coating machine according to claim 4, wherein: two film supply roller fixing plates (3-5) which are parallel up and down are further arranged on the adjustable support frame (3-6), two film supply rollers (3-4) are arranged between the film supply roller fixing plates (3-5), and the two film supply rollers (3-4) are rotatably connected with the film supply roller fixing plates (3-5); the two film supply rollers (3-4) are respectively provided with a large gear (3-7) and a small gear (3-8) which are meshed with each other.

6. The film coating machine according to claim 1, wherein: still include pressing film and cut membrane mechanism (4), pressing film and cut membrane mechanism (4) include mounting bracket (4-1), saw-tooth sword (4-4), connecting rod (4-6) and support frame (4-10), mounting bracket (4-1) set up on second riser (7-2), support frame (4-10) set up on mounting bracket (4-1), be fixed with first connecting block (4-8) on support frame (4-10), the one end of connecting rod (4-6) with first connecting block (4-8) are articulated, saw-tooth sword (4-4) set up in the below of connecting rod (4-6).

7. The film coating machine according to claim 6, wherein: the mounting frame (4-1) is also provided with a horizontally arranged film cutting frame (4-3), the upper end surface of the film cutting frame (4-3) is provided with two film pressing and cutting springs (4-2), and the bottom end surface of the saw-tooth knife (4-4) is connected with the top ends of the two film pressing and cutting springs (4-2); the support frame (4-10) is further provided with a second connecting block (4-9), the second connecting block (4-9) is hinged with a film pressing rod opening and closing oil cylinder (4-7), the other end of the film pressing rod opening and closing oil cylinder (4-7) is hinged with a film pressing rod (4-5), and the middle front part of the film pressing rod (4-5) is hinged with the other end of the connecting rod (4-6).

8. The film coating machine according to claim 1, wherein: the utility model provides a swing type carrier roller mechanism (1) below is provided with stop device (5), stop device (5) are including PMKD (5-1) and spacing post (5-2), PMKD (5-1) and workstation (7) fixed connection, and the interval is equipped with spacing hole (5-3) on PMKD (5-1), and two spacing posts (5-2) set up respectively in swing type carrier roller mechanism (1) both ends, and the bottom of spacing post (5-2) sets up inside spacing hole (5-3).

9. The film coating machine according to claim 1, wherein: the two carrier roller swinging frames (1-3) of each carrier roller unit are symmetrically arranged, and the two carrier rollers (1-1) are respectively connected with the two end parts of each carrier roller swinging frame (1-3); the section of the carrier roller (1-1) is a polygon with side lines recessed inwards to form an arc; the first rotating shaft of each carrier roller (1-1) is connected with the carrier roller swinging frame (1-3) through a rolling bearing (1-2); two ends of each swinging carrier roller spring (1-4) are respectively connected with one end of a carrier roller swinging frame (1-3) of each carrier roller unit.

10. The film coating machine according to claim 9, wherein: the section of the carrier roller (1-1) is a decagon with the side line recessed inwards into an arc.