JPH0587209B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a bale wrapper for wrapping grass bales with a film.

[Prior art] Lactic acid bacteria fermentation of land-dried grass produces highly nutritious feed, but feed silos are very expensive, so grass bales are gathered into a cylinder shape using Hebera and wrapped in a synthetic resin film. , it is often placed in a simple storage facility and fermented. As a bale wrapper for wrapping grass bales with film, the grass bales are placed on a table with a belt on the top surface so that its axis is horizontal, and the film roll is attached to a single fixed support shaft parallel to the rotation axis of the table. The end of the film pulled out from the film roll is fixed to the grass bale, and the table is rotated around the vertical axis and the belt is run to rotate the bale on it around the horizontal axis. It is known to wrap the grass bale by wrapping the film around the end face of the grass bale in the diametrical direction.

[Problems to be Solved by the Invention] A conventional device that fixes one roll film support shaft next to a table, rotates the table on which the bale is placed, and wraps the bale with a single strip of film that is pulled out is Due to the large weight of the table (700Kg to 900Kg), it was not possible to increase the rotation speed of the table. As a result, there was a problem in that it took a long time to wrap the bale.

Another problem is that bales wound with conventional bale wrappers tend to lose their shape, like a deflated rubber ball.

The present invention was made to solve these problems, and its purpose is to provide a bale wrapping method and apparatus that takes less time to wrap a bale, makes the rolled bale hard, and does not easily lose its shape. Our goal is to provide the following.

[Means for Solving the Problems] In order to achieve the above object, the means adopted by the present invention include a base, a table disposed on the base or integrally therewith, and a veil provided on the cable. In a bale wrapper equipped with a rolling means and a rolled film support device provided on the base outside the table, the rolled film support device is provided with two roll film receivers, and the rolled film receivers are arranged in a diameter centering on the table. The roll films were placed at opposite positions in the directions, the roll films were rotatably attached to the roll film receivers, the bale was placed on a table and rolled, and the two strips of film pulled out from the two roll films were wrapped around the bale. be. There are two ways to wind the film around the bale: fix the roll film receiver and rotate the table as in the past, or fix the table and rotate the roll film receiver.
Alternatively, the table may be rotated and the roll film receiver may be rotated in a direction opposite to the rotation direction of the table.
In the case of rotating the roll film receiver, in the embodiment shown in FIG. The table 12 is fixed to the base 10 in a bale wrapper comprising rolls 14, 15, a belt 15 placed around the driving and driven rolls, and a roll film support device 18 provided outside the table 12 on the base 10. The roll film support device 18 is formed from a rotor 21 rotatably provided on the base 10, a Japanese arm 17 extending diametrically from the rotor, and a roll film receiver 19 provided at the upper outer end of each arm. A drive device is provided to rotate the rotor. It is desirable that the drive device that rotates the rotor 21 has a common drive source with the drive device that rotates the drive rolls. Further, there is a cutting and gripping device 3 equipped with a hook 38 and a cutter 39 for cutting and gripping the film.
7 on both sides of the table 12.

[Operation] As shown in FIG. 3, the bale 40 is placed on the belt 15 so that its axis is parallel to the drive roll 14. The leading ends of the film pulled out from the roll films 42 on both sides are fixed to the bale by hand, or as shown in FIG. 4, are gripped by a hydraulically driven cutting and gripping device 37.

As shown in FIG. 3, when the belt is run in the direction of arrow C and the arm 17 is rotated in the direction of arrow A, two strips of film 41 are wrapped around the bail 40 from both sides, and the bail 40 is moved in the direction of arrow D. As it rotates, the veil 40 is wrapped by the film 41.

Since the present invention wraps the bale with two strips of film, the time required for wrapping is halved compared to the conventional method of wrapping the bale with one strip of film. Since the support device is relatively lightweight and can be rotated faster than conventional heavy bale tables, the time required to wrap the bale is significantly reduced.

When wrapping a bale sequentially with a single strip of conventional film, the upper and lower films 41 wrapping around the circumference must be sequentially shifted little by little, as shown in FIG. For example, in the case of the quadruple winding shown in the figure, the shift is by 1/4. When pressure is applied from the outside to a veil wrapped in this way, the air inside escapes along the seam and the vertical deviation of the same level, as shown by the arrows, but since the path is short, the air You can escape relatively easily. On the other hand, outside air tends to enter the grass, which impairs the quality of the grass. As a result, the rolled bale lacks firmness and tends to lose its shape. On the other hand, when wrapping a bale with two strips of film 41 of the present invention, the shift between the upper and lower films is 1/2, as shown in FIG. When pressure is applied from the outside to a veil wrapped in this way, the air inside escapes to the outside along the seams and gaps of the same level, as shown by the arrows, but the path is long, as shown in Figure 8. Since it is twice as large as the air, there is a lot of resistance and it is difficult for air to escape. On the other hand, it is difficult for outside air to enter inside, which impairs the quality of the pasture. As a result, the bale is tightly rolled and retains its shape.

[Example] The present invention will be described in detail based on an example shown in the drawings.

As shown in FIGS. 1 and 2, a fixed shaft 11 is fixed at the center of a base 10, and a table 12 is fixed to the fixed shaft. Japanese driving and driven rolls 14 and 16 are rotatably supported on the table 12,
A belt 15 is placed over the driving and driven rolls.
A guide bar 30 is erected on the outside of a drive roll 14 of a table 12, and guide rolls 31 and 32 are rotatably supported on the guide bar.

The roll film support device 18 includes a rotor 21, an arm 17, and a roll film receiver 19. A rotor 21 is rotatably fitted onto the fixed shaft 11, and arms 17, 17 extending diametrically and standing upright are fixed to the rotor. A roll film receiver 19 is attached to the upper part of the arms 17, 17. A sprocket 22 is provided at the bottom of the rotor 21, and this sprocket is connected via a chain 24 to a sprocket 23 fixed to the output shaft of a hydraulic motor 13 fixed to the base 10. A bevel gear 25 is provided on the upper part of the rotor 21, and the bevel gear meshes with a bevel gear 27 fixed to the inner end of the shaft 26. The shaft 26 extends parallel to the drive roll 14 along a slit 29 provided in the bottom plate 28 of the table 12. The inner and outer ends of the shaft 26 are pivotally supported by a bearing block 33 fixed to the bottom plate 28 across the slit 29. A sprocket 34 is fixed to the outer end of the shaft 26,
The sprocket is connected via a chain 36 to a sprocket 35 attached to the end of the drive roll 14. Bevel gear 2 above and below the rotor 21
5 and the sprocket 22 may be formed integrally with the rotor 21, or may be manufactured separately and fixed together. Drive and driven rolls 14 of table 12,
Cutting and gripping devices 37 for cutting the film and gripping the ends thereof are attached to the outside of both sides orthogonal to the film 16 in opposite directions.

Next, the operation of the veil wrapper of the present invention will be explained. As shown in FIG. 3, the veil 40 is placed on the belt 15. The ends of the film 41 are pulled out from the roll film 42 attached to the roll film receivers 19 of the roll film support devices 18 on both sides.
Then, as shown in FIG.
The end of the film 41 pulled out from 2 is hooked onto the hook 38 of the cutting and gripping device 37. The hook 38 is located near the tip of the cutter 39, and the cutter 39 can be raised and rotated by hydraulic pressure (not shown) along the side of the table 12 parallel to the end surface of the bale 40. After that, as shown in Figure 3,
When the hydraulic motor 13 is started, its rotation starts at the first
Since it is transmitted to the rotor 21 through the sprocket 23, chain 24, and sprocket 22 shown in the figure, the arms 17, 17 of the roll film support device 18 rotate together with the rotor 21 in the direction of arrow A. When the roll film support device rotates, the film 41 is unwound from the roll film 42 attached to the roll film receiver 19 and wound around the bail 40, as shown in FIG.

The rotation of the rotor 21 in FIG. 1 is controlled by a bevel gear 25,
27 to the shaft 26, and further transmitted to the drive roll 14 via sprockets 34, 35 and chain 36. As a result, as shown in FIG. 3, the drive roll 14 rotates in the direction of arrow B and causes the belt 15 to travel in the direction of arrow C, so that the bail 40 rotates in the direction of arrow D. Therefore, the angles of the film 41 wound around the veil 40 are sequentially shifted and the veil 40 is completely wrapped without any gaps.

After the wrapping of the bail 40 is completed, the hydraulic motor 1
3, the cutting and gripping device 37 is at a position intersecting the film 41 pulled out from the roll film 42, as shown in FIG. Therefore,
As shown in FIG. 6, when the cutter 39 of the cutting and gripping device 37 is raised, the film 4 is removed from the hook 38.
When the starting end of film 1 is removed, the cutter 39 separates the film 41 wrapped around the veil 40 from the roll film 42, and at the same time the hook 38 hooks and grips the drawn-out end of the next film 41 from the roll film 42.
Therefore, when the cutter 39 is laid down again, the fourth
It will be in the state shown in the figure. Therefore, as soon as the next bale 40 is placed on the belt 15 and the hydraulic motor 13 is started, the bale can be wrapped.

Since the method and apparatus of the present invention wraps the bale with two strips of film, when the table is rotated with the film receiver fixed, even if the speed of rotating the table is the same as the conventional one, the bale can be wrapped with one strip of film. The time required to wrap is halved compared to those that do. In particular, the device that rotates the film holder 19 does not rotate a table on which a heavy bale 40 is placed, but instead rotates a lightweight roll film device 18 consisting of a pair of roll films 42, a roll film holder 19, and an L-shaped arm 17.
Because the table rotates, it can be turned at a higher speed than conventional tables. Therefore, the time required to wrap the bale is significantly reduced compared to the conventional method. Furthermore, by rotating and pivoting the table and arm in opposite directions, the working time is significantly reduced.

[Effects of the Invention] As described above, the method and apparatus of the present invention differ from the conventional method in which a single film is pulled out from a roll film and wound around a bale. This has the excellent effect of significantly reducing the time required to wrap the bale.

Furthermore, the method and apparatus of the present invention, unlike the conventional method of wrapping with a single strip of film, has the special effect that the bale is tightly wrapped and does not lose its shape because the air inside is difficult to escape.

[Brief explanation of the drawing]

1 and 2 are a partially cutaway front view and a plan view of a veil wrapper according to an embodiment of the present invention,
Fig. 3 is a partially cutaway side view showing the state in which the bale is placed, Figs. 4 to 6 are schematic diagrams showing the relationship between the bale wrap and the cutting and gripping device, and Fig. 4 is a side view when the bale is started to wrap. Figure 5 is a plan view during lapping.
FIG. 6 is a side view at the end of the lap. FIG. 7 is a schematic diagram showing the overlap of films on the circumferential surface of a bale wrapped by the present invention, and FIG. 8 is a diagram corresponding to FIG. 7 of a bale wrapped by the conventional method. In the figure, 10 is a base, 11 is a fixed shaft, 1
2 is a table, 13 is a hydraulic motor (drive source), 1
4 is a drive roll, 15 is a belt, 16 is a driven roll, 17 is an arm, 18 is a roll film support device, 19 is a roll film receiver, 21 is a rotor,
22, 23 are sprockets, 24 is a chain, 2
5 is a bevel gear, 26 is a shaft, 27 is a bevel gear, 34 and 35 are sprockets, 36 is a chain, 37 is a cutting and gripping device, 38 is a hook, 39 is a cutter, 40 is a veil, 41 is a film, and 42 is a roll film. show.

Claims (1)

[Scope of Claims] 1. Drive and driven rolls arranged in parallel on a base, a belt hung around the drive and driven rolls, a belt drive device that rotationally drives the drive roll, and a rotation of the belt. a roll film supporting device having an arm pivotally supported on the base so as to be horizontally swivelable; and an arm driving device for rotating the arm; The present invention is characterized in that a receiver is provided, a roll film is attached to the roll film receiver, and a cutting means is provided on the base for cutting two strips of film that are pulled out from the roll film and wrapped around a bale placed on the bale. Beerrattupa. 2. A table is fixed to the base via a fixed shaft, and a rotor is rotatably fitted onto the fixed shaft,
A patent claim characterized in that an arm is fixed to the rotor, the arm drive device comprises means for transmitting the rotation of a drive source to the rotor, and the belt drive device comprises means for transmitting the rotation of the rotor to the drive roll. The veil lappa according to item 1. 3. Claims characterized in that a film cutting and gripping device consisting of a cutter that is rotatably fixed on both sides of a base and a hook attached to the tip of the cutter is attached as a film cutting means. The veil lappa according to item 1 or 2. 4. Place a veil so that its peripheral surface is in contact with the upper surface of the belt provided on the base, arrange two rolled films symmetrically with respect to the center of the upper surface of the veil when viewed from above, and then one of the films on the outer surface of one side of the veil;
The other is fixed to the outer surface of the opposite side of the bale, and the belt is run to roll the bale, and the roll film is horizontally rotated relative to the bale, so that the bale has two
A bale-wrapping method comprising the steps of wrapping a strip of film by wrapping it from both sides, and cutting the two strips of film using a cutting means after wrapping. 5. Claim 4, characterized in that the films that overlap in the film thickness direction overlap so that they are shifted by half the film width in the veil circumferential direction.
Bale wrapping method as described in Section 1. 6 Claim 4, characterized in that the cutting means cuts two films at the same time under tension.
The veil wrap method according to item 1 or 5.