JP4373479B2 - Roll bale packaging equipment - Google Patents

Description

  The present invention relates to a roll bale wrapping apparatus that takes in a roll bale laid down in a field, wraps it with a film, and discharges it.

  The roll bale is made of pastures that are formed into a cylindrical shape and laid sideways in the field. Such a roll bale is aged into a high-quality silage by wrapping a plastic stretch film by a roll bale packaging device.

  As a roll bale wrapping device, it is connected to a tow vehicle such as a tractor, the vehicle is pulled, a take-in mechanism that takes the roll bale horizontally into the vehicle body, and the roll bale that is taken in is rotated horizontally around the horizontal axis. There is known a roller having a roller to be wound, a wrap mechanism for winding a film around a rotating roll bale around a vertical axis, and a discharge mechanism for discharging the roll bale wrapped with the film from the vehicle body (Patent Document) 1 and 2).

Japanese Patent Laid-Open No. 5-23041 JP-A-6-70631

  However, the roll bale wrapping apparatus still has room for improvement in terms of roll bale take-in and discharge and film cutting. Improvements in roll bale take-up and discharge properties, particularly film cuts, have been made. Development of a roll bale packaging device has been desired.

  The present invention relates to a roll bale wrapping apparatus that takes in a roll bale, wraps it with a film and discharges it, and includes a lower arm member and an upper arm member that are rotatably connected to each other so as to be cut with the film interposed therebetween. The lower arm member is pivotally supported on a vehicle body connected to the vehicle body, the upper arm member is pivotally supported on the lower arm member, and a cylinder is provided between the vehicle body and the lower arm member to rotate them relative to each other. And a link for rotating the upper arm member in conjunction with the rotation of the lower arm member.

  According to the present invention, the lower arm member rotates upward according to the extension of the cylinder, and the upper arm member also rotates upward according to the rotation of the lower arm member. The pivoting movement is interlocked with the substantially vertical direction, and the installation space for the lower arm member and the upper arm member is reduced. Further, when the film is sandwiched between the lower arm member and the upper arm member for cutting, the upper arm member operates so as to crush the film from substantially above, so that the film is surely cut without escaping.

  In addition, a holding base for holding a film to be cut between the lower arm member and the upper arm member between the other arm member is elastically provided via a spring in the vicinity of the holding base. A cutter for substantially cutting the film may be provided.

  According to this configuration, the film cut between the lower arm member and the upper arm member is cut by the cutter while being held between the holding base provided on one arm member and the other arm member, The pushing allowance for the cutting is absorbed by the spring and the holding base moves backward, so that it is surely cut and held securely.

  ADVANTAGE OF THE INVENTION According to this invention, the installation space of the apparatus which cuts a film can be made small, and a film can be cut reliably.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a perspective view of a roll bale packaging device according to the present embodiment, and FIG. 2 shows a plan view of the packaging device.

  As shown in the figure, the roll bale packaging device includes a vehicle body 1 connected to a towing vehicle such as a tractor. On the left and right sides of the vehicle body 1 in the vehicle width direction, swing frames 2 extending in the vehicle length direction are provided so as to be swingable via a swing shaft 3. Wheels 4 are rotatably provided at the front part and the rear part of each swing frame 2. A traction rod 5 for connecting the vehicle body 1 to a towing vehicle such as a tractor is attached to the left front portion of the vehicle body 1 via a pin 6 so as to be rotatable around a vertical axis. The traction rod 5 is rotated around the pin 6 by the hydraulic cylinder 7 and the rotation angle is maintained.

  A fork member 8 formed in a U-shape for taking in the roll bail R is provided at the front portion 1a of the vehicle body 1 so as to be rotatable around its root side. The fork member 8 is formed by bending one pipe into a substantially U shape, and has a fork 9 including a left arm 9a, a central bar 9b, and a right arm 9c. The interval W between the left and right arms 9a, 9c of the fork 9 is set to be longer than the axial length L of the roll bale R placed sideways. Therefore, by pulling the vehicle body 1 by the tractor and moving it forward, the roll bale R placed on the field can be taken into the fork 9 from the circumferential direction.

  Brackets 10 and 10 are respectively provided on the base side portions of the left and right arms 9a and 9c of the fork 9 so as to extend downward. A support rod 11 for supporting the lower part of the roll bale R taken into the fork 9 is suspended over the brackets 10 and 10. The support bar 11 and the center bar 9 b are connected by brackets 12 and 12. The bracket 12 is connected to the bracket 14 of the vehicle body front portion 1a through a pin 13. Thereby, the fork member 8 is rotatably attached to the vehicle body 1. As shown in FIGS. 2 and 7, a hydraulic cylinder 15 is interposed between the fork member 8 and the vehicle body 1. The hydraulic cylinder 15 rotates the fork member 8 with respect to the vehicle body 1 around the pin 13.

  The tip of the left and right arms 9a, 9c of the fork 9 is opened when the roll bale R is taken in as shown in FIG. 2, and is closed inward after taking in as shown in FIG. Supporting claws 16 and 16 that support the lower part of R are rotatably provided. Each support claw 16 has a taper portion 16 a for guiding the roll bail R inward when opened as shown in FIG. 2, and is opened and closed by a hydraulic cylinder 17. As shown in FIG. 3, when the support claw 16 is closed after the roll bale R is taken in, the lower portion of the roll bail R is supported by the support bar 11 of the fork member 8 and the closed support claws 16, 16. Is done.

  According to the above configuration, the roll bale R placed horizontally in the field is taken into the vehicle body 1 as follows. First, as shown in FIG. 14A, the vehicle body 1 is pulled with the support claws 16 open, and the roll bale R placed on the field is taken into the fork member 8 from the circumferential direction. Then, as shown in FIG. 14 (b), the support claw 16 is closed, and the lower portion of the roll bail R is supported by the support bar 11 and the support claws 16, 16 of the fork member 8. Then, as shown in FIG. 14 (c), the fork member 8 is rotated upward about the pin 13, and the roll bale R is lifted by the support rod 11 and the support claws 16, 16 and taken into the vehicle body 1.

  In the center of the vehicle body 1 into which the roll bale R is taken, a pair of support rollers 17 and 18 for supporting the taken-in roll bale R are arranged in parallel to the vehicle width direction. The front support roller 17 is pivotally supported by a bracket 19 of the vehicle body 1 as shown in FIGS. 4 to 6, and as shown in FIG. 8, a motor 20 and sprockets 21 and 22 provided on the vehicle body 1 It is rotationally driven by the chain 23. As shown in FIGS. 4 to 6, the rear support roller 18 is attached to the vehicle body 1 via lifting / lowering means 24 that lifts and lowers the rear support roller 18.

  The elevating means 24 has a rotating bracket 26 that is rotatably attached to the left and right in the vehicle width direction of the vehicle body 1 via pins 25. The rear support roller 18 is rotatably mounted between the left and right pivot brackets 26. The rotating bracket 26 is rotated around the pin 25 by a hydraulic cylinder 27 interposed between the rotating body 26 and the vehicle body 1. As shown in FIGS. 1 and 2, an endless belt 28 on which the roll bale R is placed is spaced apart from the rear support roller 18 and the front support roller 17 at a predetermined interval in the width direction of the two vehicles. It is wrapped around.

  As shown in FIG. 5, when the roll bale R is placed on the endless belt 28 when the front support roller 17 and the rear support roller 18 are in the neutral state as shown in FIG. The upper surface 28a is adjusted to a length that fits the curvature of the roll veil R and is recessed, and the lower surface 28b is stretched linearly. In the state of FIG. 5, when the front support roller 17 is rotationally driven in the direction of the arrow 29, tension is applied to the endless belt 28 due to the load of the roll bale R that is placed so as to fit on the endless belt 28. As a result, the endless belt 28 circulates and rotates, and the roll bale R is rotated in the direction of the arrow 30 around the horizontal axis while being in a horizontal state. The axial position of the rotating roll bale R is positioned by a guide 70 provided on the vehicle body as shown in FIGS.

  A film F is wound around the vertical axis by a lap mechanism 31 shown in FIGS. 1 and 2 around the rotating roll veil R. The lap mechanism 31 has a cradle frame 32 fixed to the vehicle body 1. The cradle frame 32 is attached to the left and right ends in the width direction of the vehicle body 1 so as not to interfere with the roll bale R taken into the vehicle body 1 from the field by the fork member 8. A rotating frame 33 bent in a U shape is attached to the cradle frame 32 so as to be rotatable about a vertical axis. The rotating frame 33 is rotationally driven by a hydraulic motor 34 provided at the top of the cradle frame 32.

  At both ends of the rotating frame 33, there are provided holders 35 for holding a cylindrical body (not shown) around which the film F is wound, and a film stretching device 36 for pulling out the film F from there with a predetermined tension. Is provided. The drawn film F is wound around a vertical axis around a roll bale R rotated sideways by an endless belt 28 as shown in FIG. 5, and the roll bale R is wound around the roll bale R as shown in FIG. 15 (d). Wrap.

  Here, prior to taking the roll veil R to be wrapped into the vehicle body 1, the hydraulic cylinder 27 is extended from the neutral state of FIG. Then, as shown in FIG. 4, the pivot bracket 26 pivots upward about the pin 25, the rear support roller 18 rises higher than the front support roller 17, approaches the front support roller 17, and the endless belt 28. Sag. The rear support roller 18 raised in this manner functions as a load spill preventing member that prevents the roll bail R supplied from the right side in the figure from spilling to the left side of the vehicle body 1 (FIGS. 14A and 14B). b), see (c)).

  Then, after the roll bale R is wrapped, the hydraulic cylinder 27 is contracted from the neutral state of FIG. Then, as shown in FIG. 6, the pivot bracket 26 pivots downward about the pin 25, the rear support roller 18 descends from the front support roller 17, moves away from the front support roller 17, and the endless belt 28. Is inclined and stretched in a straight line. In FIG. 6, the roll bale R rolls down the endless belt 28 that is stretched in a straight line and is discharged from the vehicle body 1 (see FIGS. 15 (d), (e), and (f)). At this time, the front support roller 17 may be rotated in the direction of the arrow 29 to circulate the endless belt 28 in the discharge direction of the roll bale R.

  The left and right pivot brackets 26, 26 that pivotally support the rear support roller 18 do not interfere with the endless belt 28 in the state of FIGS. 4 and 5 and are pressed against the lower surface 28b of the endless belt 28 in the state of FIG. The tension rod 37 is stretched over. The tension bar 37 does not act on the endless belt 28 in the state shown in FIGS. 4 and 5, but in the state shown in FIG. 6, the belt lower surface 28b is pushed up to give tension to assist the belt upper surface 28a to be stretched linearly. A roller (not shown) may be attached to the tension bar 37 to reduce the contact resistance with respect to the endless belt 28 that circulates and rotates in the state shown in FIG.

  Further, as shown in FIGS. 4 to 6, unloading brackets 39 and 39 are rotatably attached to the left and right rotating brackets 26 and 26 via pins 38 and 38, respectively. A horizontal bar 40 is stretched around the unloading brackets 39 and 39 and fixed thereto. The horizontal bar 40 functions as a connecting member for interlocking the left and right unloading brackets 39, 39, and the rear support roller 18 indicates that the roll bale R supplied from the right side in FIG. It also functions as a load spill prevention member that prevents it.

  As shown in FIG. 6, when the end support belt 18 is lowered and the endless belt 28 is slanted in a straight line as shown in FIG. Is fixed. As shown in FIG. 2, the main unloading rod 41 is provided with a moment so that a roll bale R that rolls down from the vehicle body 1 and rolls down on the rod 41 is applied to the main unloading rod 41. A side unloading bar 42 formed slightly higher is provided.

  The unloading brackets 39 and 39 are provided with stoppers 43 and 43, respectively, as shown in FIGS. The stopper 43 contacts the lower end surface of the swing bracket 26 in the state of FIGS. 4 and 5 to prevent the main / sub-load unloading rods 41 and 42 from hanging down. In the state of FIG. The main and auxiliary unloading rods 41 and 42 are allowed to swing according to the height of the ground in the field apart from the lower end surface.

  According to the above configuration, as shown in FIGS. 14A, 14 </ b> B, and 14 </ b> C, when the roll bale R is taken into the vehicle body 1, the rear support roller 18 is raised above the front support roller 17. Thus, the raised rear support roller 18 serves as a stopper for the roll veil R taken into the vehicle body 1, and the roll bale R can be prevented from spilling from the vehicle body 1 due to the momentum at the time of taking in (see FIG. 4).

  Then, as shown in FIG. 5, the rear support roller 18 is set to the same height as the front support roller 17, and the front support roller 17 is rotated in the direction of the arrow 29 to place the roll bale R on the endless belt 28 sideways. While rotating around the horizontal axis in the state, the rotating frame shown in FIGS. 1 and 2 is rotated around the vertical axis, and the periphery of the roll veil R is wrapped with the film F as shown in FIG.

  Thereafter, as shown in FIGS. 15D, 15E, and 15F, when the roll bale R is discharged from the vehicle body 1, both the rear support roller 18 and the front support roller 17 are lowered so that both The endless belt 28 wound around the support rollers 17 and 18 is inclined, and the roll bale R on the endless belt 28 rolls down and is reliably discharged (see FIG. 6).

  In addition, as shown in FIGS. 1, 9 and 10, the vehicle body 1 has a lower arm member 44 and a lower arm member 44 that are rotatably connected to each other so as to be cut with a film F wound around a roll bail R interposed therebetween. Cut mechanisms 46 formed of the upper arm members 45 are provided on the left and right in the vehicle width direction, respectively. As shown in FIGS. 9 and 10, the lower arm member 44 is rotatably attached to a bracket 47 attached to the vehicle body 1 via a pin 48. An upper arm member 45 is rotatably attached to a distal end portion 44 a of the lower arm member 44 via a pin 49.

  Between the bracket 47 attached to the vehicle body 1 and the bracket 50 provided at the base of the lower arm member 44, a hydraulic cylinder 51 that rotates the lower arm member 44 relative to the vehicle body 1 around the pin 48. Is installed. Between the bracket 47 of the vehicle body 1 and the base portion 45 a of the upper arm member 45, a link 52 that rotates the upper arm member 45 about the pin 49 in conjunction with the rotation of the lower arm member 44 is interposed. . Accordingly, when the hydraulic cylinder 51 is contracted from the state of FIG. 9, the lower arm member 44 rotates upward about the pin 48 as shown in FIG. 10, and at the same time, the upper arm member 45 also rotates upward about the pin 49. The film F is sandwiched between the arm members 44 and 45. One end of the film F is wound around a roll bale R shown in FIG. 5, and the other end is drawn from the film stretching device 36 shown in FIG.

  According to this configuration, the lower arm member 44 rotates upward according to the extension of the cylinder 51, and the upper arm member 45 also rotates upward according to the rotation of the lower arm member 44. As described above, the lower arm member 44 and the upper arm member 45 are rotated and moved in a substantially vertical direction, and the installation space for the lower arm member 44 and the upper arm member 45 can be reduced. Further, when the film F is sandwiched between the lower arm member 44 and the upper arm member 45 and cut, the upper arm member 45 operates so as to crush the film F from substantially above as shown in FIG. The film F is surely cut without escaping.

  As shown in FIG. 11, a round bar 53 for pressing the film F is welded to the upper arm member 45. The round bars 53 are formed along the longitudinal direction of the upper arm member 45 and are welded together at a predetermined interval in the width direction. The upper arm member 45 is formed with a recess 55 so as to avoid interference with the cutter 54 attached to the lower arm member 44. On the other hand, the lower arm member 44 is elastically provided with a holding base 56 through a spring 57 for holding the film F to be cut between the lower arm member 44 and the upper arm member 45.

  The springs 57 are positioned between the both ends of the holding base 56 and the lower arm member 44 so as to be positioned by the holders 58 and act so as to separate the holding base 56 from the lower arm member 44. The holding base 56 and the lower arm member 44 are welded to the central portion of the holding base 56 and passed through the holding hole 59 of the lower arm member 44, and a holding nut screwed to the tip of the holding bar 60. 61 so as not to be separated from each other. An elastic plate 62 made of an elastic material such as rubber is attached to the holding table 56 to enhance the holding property of the film F.

  According to this configuration, the film F cut between the lower arm member 44 and the upper arm member 45 holds the lower arm member 44 as shown in FIGS. 11 (a), 11 (b), and 11 (c). Since it is cut by the cutter 54 while being held between the elastic plate 62 of the base 56 and the round bar 53 of the upper arm member 45, the holding allowance for the cut is absorbed by the spring 57 and the holding base 56 moves backward. It is surely cut and held securely. In FIG. 11, the film F to be cut is pulled out from the film stretching device 36 (see FIG. 1) located on the left side of the arm members 44 and 45, and the round bar 53 of the upper arm member 45 and the lower arm member 44. It passes between the elastic plate 62 of the holding base 56 and is wound around the roll bale R (see FIG. 5) on the right side of the arm members 44 and 45.

  Further, when the film F is cut in this way, the upper arm member 45 and the lower arm member 44 rotate around the pin 49, so that the round bar 53 of the upper arm member 45 is elastic of the holding base 56 of the lower arm member 44. Although it is conceivable that the plate body 62 is pressed obliquely, even in this case, the holding table 56 is tilted like a seesaw around the holding bar 60, so the round bar 53 and the elastic plate body 62 of the holding table 56 It will hit horizontally without hitting, and the retainability of the film F will not be lowered.

  As shown in FIG. 5, the bale motor 20 shown in FIG. 8 that rotates the front support roller 17 to rotate the roll bale R placed horizontally on the endless belt 28 around the horizontal axis, and the periphery of the roll bale R A hydraulic circuit 63 shown in FIG. 13 is connected to the film motor 34 provided on the cradle frame 32 shown in FIG. 1 for rotating the rotary frame 33 so as to wind the film F around the vertical axis.

  The hydraulic circuit 63 includes a hydraulic pressure generating device 64 provided in a towing vehicle such as a tractor, and a hydraulic joint 66 that connects the hydraulic pressure generating device 64 and a pipe 65 connected to each of the motors 20 and 34. The pipe 65 is provided with a diversion valve 67 for supplying the required amount of oil to the motors 20 and 34 and returning excess oil. The diversion valve 67 is provided with a throttle 68 for changing the required oil amount. Another diversion valve 70 is provided in the pipe 69 that connects the diversion valve 67 and the motors 20 and 34.

  The diversion valve 70 reduces the oil amount to the film motor 34 accordingly when the oil amount to the bale motor 20 is increased, and to the film motor 34 accordingly when the oil amount to the bale motor 20 is reduced. Has a function of increasing the amount of oil, and is provided with a throttle 71 for adjusting the diversion ratio. The diversion valve 70 and its throttle 71 correspond to a control unit that decelerates the film motor 34 when the bale motor 20 is accelerated, and accelerates the film motor 34 when the bale motor 20 is decelerated.

  According to this configuration, the speed of the film motor 34 and the speed of the bale motor 20 are changed in conjunction with each other by the control unit (the diversion valve 70 and the throttle 71), whereby the film F to be wrapped on the roll bale R is changed. You can change the lap cost. That is, if the speed of the film motor 34 is increased and the speed of the bale motor 20 is decreased, the wrap margin of the film F increases, and if the speed of the film motor 34 is decreased and the speed of the bale motor 20 is increased, the film F wrap is increased. The bill gets smaller.

  In other words, when the width of the film F to be used is changed, the speed of the film motor 34 and the speed of the bale motor 20 are appropriately changed in conjunction with each other, regardless of the change in the width of the film F. A certain lap cost can be secured. For example, when switching from a narrow film to a wide film, the speed of the film motor 34 is slowed down and the speed of the bale motor 20 is speeded up, so that the wrap allowance between the films F is increased regardless of the increase in the width of the film F. Can be made constant (50% is desirable).

  Specifically, when the film F having a width of 50 cm is switched to the film F having a width of 75 cm, if the wrap margin is made constant only by the rotation speed of the front support roller 17, the rotation speed of the front support roller 17 is reduced to 150%. Although it is necessary to increase the speed, if the rotational speed of the front support roller 17 is increased by 150% in this way, the roll veil R whose center of gravity is not necessarily at the center is formed by the two support rollers 17 and 18. It may start to vibrate above and be shaken out of the vehicle body 1.

  On the other hand, in order to avoid this phenomenon, if the rotation speed of the rotating frame 33 is reduced to 50% without changing the rotation speed of the front support roller 17, the time until the end of the lapping operation is reduced. The effect of shortening the working time, which is the purpose of using the film F having a width of 75 cm, is not obtained. Therefore, it is necessary to adjust both the rotation speed of the front support roller 17 and the rotation speed of the rotation frame 33, but it is troublesome to adjust both speeds individually.

  Therefore, both speeds are adjusted in synchronization by the control unit (the diversion valve 70 and the throttle 71). Here, for example, by setting multi-stage clicks on the diaphragm 71 and switching the clicks according to the width of the film F to be used, a constant lap allowance (50%) can be obtained regardless of variations in the film width. It is desirable to be able to obtain.

1 is a perspective view of a roll bale packaging device showing an embodiment of the present invention. It is a top view of the said packaging apparatus. It is a top view of the said packaging apparatus. It is a side view of the said packaging apparatus. It is a side view of the said packaging apparatus. It is a side view of the said packaging apparatus. It is a partial side view of the said packaging apparatus. It is a partial top view of the said packaging apparatus. It is a partial side view which shows the lower arm member and upper arm member of the said packaging apparatus. It is a side view which shows the state which the said lower arm member and the upper arm member expand | deployed. It is a front view which shows the action | operation of the said lower arm member and the upper arm member, and FIG. 11 (a), FIG.11 (b), FIG.11 (c) is a figure which shows each process. It is explanatory drawing which shows the locus | trajectory of the said upper arm member. It is explanatory drawing which shows the hydraulic circuit of the motor for a bale and the motor for a film. It is explanatory drawing which shows the mode of taking in the roll bale of the said packaging apparatus, FIG.14 (a), FIG.14 (b), FIG.14 (c) is a figure which shows each process. It is explanatory drawing which shows the mode of discharge of the roll bale of the said packaging apparatus, FIG.15 (d), FIG.15 (e), FIG.15 (f) is a figure which shows each process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 44 Lower arm member 45 Upper arm member 51 Cylinder 52 Link 54 Cutter 56 Holding stand 57 Spring R Roll bale F Film

Claims (2)

In roll bale packaging equipment that takes in roll bale, wraps with film and discharges,
A lower arm member and an upper arm member that are pivotally connected to each other so as to be cut with a film interposed therebetween. Is provided between the vehicle body and the lower arm member, and the upper arm member is rotated between the vehicle body and the upper arm member in conjunction with the rotation of the lower arm member. A roll bale wrapping device characterized in that a link is provided.   One of the lower arm member and the upper arm member is elastically provided with a holding base for holding a film to be cut between the lower arm member and the other arm member via a spring, and substantially in the vicinity of the holding base. The roll bale packaging apparatus according to claim 1, further comprising a cutter for cutting the film.

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