JP2015226515A - Wrap machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wrap machine capable of winding a film around a roll bale even when an adhesive surface of a film roll is inside out.SOLUTION: A wrap machine 1 for winding a film on a surface of a roll bale 9 comprises: a film holding part 6 for rotatably holding a cylindrical film roll 8; and a first roller 41, a second roller 42, and a third roller 43 which make the film delivered from the film roll 8 meander. When a film roll 8a having strong adhesion on the inside is used, the first roller 41 and the second roller 42 are made to meander, and the film is wound on the roll bale 9 after being stretched. On the other hand, when a film roll 8b having strong adhesion on the outside is used, the film roll 8b is loaded upside down and wound on the roll bale 9 while the first roller 41 to the third roller 43 are made to meander in a reverse direction.

Description

  The present invention relates to a wrap machine that winds a film around a cylindrical roll bale, and more particularly, to a wrap machine that allows a film to be wound around a roll bale even when the adhesive surface of the film is reversed. Is.

  Conventionally, grass, wheat, straw, etc. cut off in a field are formed into a cylindrical shape by a roll baler, and then a film is wound and shipped for feed.

  A general structure of such a lap machine will be described with reference to FIG. In FIG. 11, the code | symbol 101 is a film holding part which loads the film roll 8, and inserts the film roll 8 in an insertion axis | shaft, and makes it rotate. Reference numeral 102 denotes a stretch mechanism that stretches the film fed from the film holding unit 101, and rotates the first roller 103 that is closer to the film roll 8 at a low speed and is closer to the roll bale 9. By rotating the second roller 104 quickly, the film can be stretched and fed out. Reference numeral 105 denotes a rotation mechanism for rotating the cylindrical roll bale 9. The roll bale 9 is rotated on a horizontal axis by placing the roll bale 9 on rollers provided in parallel in the front-rear direction and rotating the roll bale 9. The film roll 8 is revolved around the outer periphery of the roll bale 9 so that the film can be wound around the entire roll bale 9. In addition, although the structure which revolves the film holding | maintenance part 101 is shown here, the film drawn | fed out from the film holding | maintenance part 101 is wound by rotating the turntable which mounts the roll bale 9 to a perpendicular axis direction. There is also a structure that can be used.

  By the way, as a film used for such a wrap machine, as a domestic product, a type having a strong adhesive surface on the inner surface is usually used (Patent Document 1). The first roller 103 and the second roller 104 meander from the film roll 8 in the direction shown in FIG. 12a so that the film can be drawn out while being stretched.

JP 2011-046929 A

  However, some film rolls used overseas have a strong adhesive surface on the outside, unlike domestic production. When using such a film roll, if the film is meandered in the same direction as the type having an adhesive surface on the inside, the adhesive surface of the film wound around the roll veil is reversed, as shown in FIG. Thus, the films cannot be brought into close contact with each other. On the other hand, when such a film roll is loaded upside down and rotated in the reverse direction, as shown in FIG. 12c, the contact area between the second roller 104 and the film becomes small, and the film is sufficiently stretched. I can't. For this reason, conventionally, it was not possible to use a film roll having an adhesive surface that is reversed.

  Then, this invention was made paying attention to the said subject, and it aims at providing the lap machine which can wind the film around a roll bale even if the adhesive surface of a film roll is reverse.

  That is, in order to solve the above-mentioned problem, the present invention is a wrap machine for winding a film around the surface of a roll bale, and a film holding unit that rotatably holds a cylindrical film roll, and the film roll. A first roller for meandering the film, a second roller for meandering the film meandered by the first roller in a reverse direction, and a third roller for meandering the film meandered by the second roller in the opposite direction. And roll the bale after meandering the first roller and the second roller based on the direction of the adhesive surface of the film roll, or meandering from the first roller to the third roller. You can choose whether to wrap around.

  If comprised in this way, for example, about the film roll which has an adhesive surface inside, the 1st roller and the 2nd roller meander and it winds around a roll veil. By causing the roller to the third roller to meander and be wound around the roll bale, the film can be wound around the roll bale even if the direction of the adhesive surface is different.

  In such an invention, the second roller is rotated faster than the first roller, and the third roller is freely rotated.

  If comprised in this way, the film stretched by the first roller and the second roller can be fed out from the third roller to the roll bale side as it is.

  Furthermore, it has the cutting mechanism which cut | disconnects the film wound around the said roll bale, and cut | disconnects the film drawn | fed out from the said 2nd roller, and the film drawn | fed out from the said 3rd roller with the said one cutting | disconnection mechanism. Configure.

  If comprised in this way, even if it is a case where the position of the film fed out from a 2nd roller and the position of the film fed out from a 3rd roller differ, a film can be cut | disconnected by one common cutting mechanism. It becomes like this.

  As one aspect of the mechanism for matching such cutting positions, a cutting mechanism for cutting the film by bundling it in the vertical direction is provided.

  If configured in this way, even if the feeding direction from the second roller and the third roller is different, the film is bundled and cut after being collected in one place, so the film was fed from any position Even so, the film can be cut by one common cutting mechanism.

  According to the present invention, in a lap machine for winding a film around the surface of a roll bale, a film holding unit that rotatably holds a cylindrical film roll, and a first roller that meanders the film fed from the film roll. And a second roller for meandering the film meandered by the first roller in the reverse direction, and a third roller for meandering the film meandered by the second roller in the opposite direction. Based on the direction, the first roller and the second roller can be meandered and then wound on the roll bale, or the first and third rollers can be meandered and then wound on the roll bale. So, for example, for a film roll having an adhesive surface on the inside, the first roller and the second roller Ra is meandering can be wound into a roll bale, also for the film having an adhesive surface on the outside can be wound into a roll bale by meandering from the first roller to the third roller.

Overall schematic view of a lap machine showing an embodiment of the present invention Overall view of film holder in the same form The figure which shows the vicinity of the insertion rod and lower end support part in the same form The figure which shows the state which makes the stretch part in the same form contact / separate to a film roll The figure which shows the gear of the stretch part in the same form The figure which shows the outline | summary of the cutting | disconnection holding | maintenance mechanism in the form The figure which shows the outline | summary of the cutting | disconnection holding | maintenance mechanism in the form Example of use when the adhesive surface of the film in the same form is reversed The figure which shows the operation | movement in the lap machine in the same form The figure which shows the cutting state in the lap machine in the form The figure which shows the lap machine in the conventional example The figure which shows the stretch mechanism in a prior art example

  Hereinafter, a lap machine 1 according to an embodiment of the present invention will be described with reference to the drawings.

  A wrap machine 1 in this embodiment is configured to wind a thin film while rotating a roll bale 9 in which grass is formed in a cylindrical shape, and rotates the roll bale 9 as shown in FIG. A rotation mechanism 2 and a wrapping mechanism 3 for winding a film around the surface of a roll bale 9 rotated by the rotation mechanism 2 are provided. Characteristically, as the wrapping mechanism 3, when stretching the film fed out from the film roll 8, it is possible to correspond to each film having a different direction of the adhesive surface, as shown in FIG. For a type of film having a single roller 41, a second roller 42, and a third roller 43 and having a strong adhesive surface on the inside, the first roller 41 and the second roller 42 are meandered and wound around the roll bale 9, and vice versa. As for the type of film having a strong adhesive surface on the outside, the second roller 42 and the third roller 43 are meandered from the first roller 41 so as to be wound around the roll bale 9. Hereinafter, the configuration of the lap machine 1 in the present embodiment will be described in detail.

  First, as shown in FIG. 1, the rotation mechanism 2 of the lap machine 1 rotates a roll bale 9 by rotating a roller 21 provided in parallel in the front-rear direction and a belt 22 stretched over the roller 21. A film is wound around the surface of the roll bale 9 by rotating the outer periphery of the roll bale 9 with the film roll 8. Here, the roll bale 9 is rotated about the horizontal axis, but the wrapping mechanism 3 is fixed and the roll bale 9 is rotated in the vertical axis direction to wind the film. Also good.

  The wrapping mechanism 3 is configured to hold the film roll 8 rotatably and to feed the film from the film roll 8 so as to be wound around the roll bale 9. Specifically, the wrapping mechanism 3 includes a film holding unit 6 and a stretch mechanism 4 as described below.

  First, as shown in FIG. 2 and the like, the film holding unit 6 includes an insertion rod 61 that allows the vicinity of the lower end of the film roll 8 to be inserted, and an upper end support unit 66 that rotatably supports the upper end portion of the film roll 8. As shown in FIG. 3, the insertion rod 61 is tilted to insert the film roll 8, and the insertion rod 61 is brought into contact with the lower end support portion 65 provided on the insertion rod 61. Is supposed to stand up. Then, with the film roll 8 raised, the upper end support portion 66 is lowered and pressed so as to be rotatable, and rotated while being sandwiched from above and below. When lowering the upper end support portion 66, by operating the lever 71 provided on the stretch arm 31 upward, the slide rod 75 is slid downward via the side link member 74, the upper link member 72, etc. Thereby, the upper end support portion 66 is lowered.

  On the other hand, the stretch mechanism 4 for stretching the film held by the film holding unit 6 is configured to stretch the film pulled along with the rotation of the roll bale 9 so as to be wound around the surface of the roll bale 9. As shown in FIG. 4 (below), the first roller 41 provided on the outer periphery of the film roll 8 so as to be pressable and the film wound so as to meander around the first roller 41 are meandered in the reverse direction. Two rollers 42 and a third roller 43 for causing the film wound so as to meander around the second roller 42 to meander in the opposite direction are further provided. These rollers 41, 42, 43 are pivotally supported by upper and lower plates 40 d, 40 u (FIG. 5) attached to the stretch arm 31, and the upper plate 40 u is film-rolled via a spring 44. The film can be fed out stably from the film roll 8 by always pressing the 8 side.

  The surface of the first roller 41 and the second roller 42 is provided with rubber having irregularities in the longitudinal direction, and the film can be stretched by increasing the friction with the film fed from the film roll 8. It is like that. Of these rollers, a gear 41g having the number of teeth N (for example, N = 25) is attached to the upper end of the first roller 41, as shown in FIG. Are fitted with gears 42g having n teeth (n <N). At this time, when the film is pulled by the rotation of the roll bale 9, the first roller 41 and the second roller 42 are rotated by the adhesive force of the rubber and the film. At that time, the second roller 42 is relatively moved by the gears 41g and 42g. Rotates at high speed. Thereby, the film can be stretched between the first roller 41 and the second roller 42.

  On the other hand, the 3rd roller 43 is provided adjacent to the 2nd roller 42, and is used when using the film roll 8 which has a strong adhesion surface on the outer side. Even when the film roll 8 is inserted upside down and meandered in the opposite direction, the contact area between the first roller 41, the second roller 42, and the film can be secured. That is, when the film roll 8 is inserted into the insertion rod 61 in the opposite direction, the contact area between the second roller 42 and the film becomes small as shown in FIG. The film cannot be sufficiently stretched by the second roller 42. Therefore, by providing the third roller 43, a large contact area with the second roller 42 is ensured and stretched reliably.

  Further, the third roller 43 needs to feed the film stretched by the first roller 41 and the second roller 42 to the roll bale 9 as it is, but the third roller 43 is more than the second roller 42. If the rotation speed is low, the stretched film returns to its original state. Therefore, the stretched film is prevented from returning to the original state by freely rotating the third roller 43 here. Further, the third roller 43 is lightly rotated when the film is pulled by making it smaller than the rotational moment of the second roller 42, so that the third roller 43 does not rotate at a lower speed than the second roller 42 when the film is fed. ing. As described above, as a method of reducing the rotational moment of the third roller 43, by removing the rubber of the second roller 42 and using only the core material, the outer dimension is reduced and the rotational moment is reduced.

  The film holding unit 6 and the stretch mechanism 4 configured as described above are attached to a rotary frame 23 provided below the turntable 20 via a stretch arm 31, and rotate the rotary frame 23 as shown in FIG. By doing so, the outer periphery of the roll bale 9 is circulated.

  As shown in FIGS. 6 and 7, the cutting and holding mechanism 50 bundles the film from above and below, abuts it on a cutter 57 (see FIG. 7), and slides the cutter 57 in the cutting direction to cut it. In this way, the film is held at the time of cutting so that it is prepared for the next wrapping. Specifically, as shown in FIG. 6, the cutting and holding mechanism 50 includes a turntable 20, a grip rod 51 and a lower link 52 attached to the turntable 20 so as to be tiltable, and the lower link 52 and the grip. It is composed of a four-bar rotation link mechanism comprising an intermediate link 53 connected to the rod 51. By tilting the grip rod 51, the film is sandwiched between the grip rod 51 and the intermediate link 53, and the film is bundled from above and below. It is intended to be. Further, an upper side contact member 54 that approaches the rotation center side as the grip rod 51 tilts is provided at the tip of the grip rod 51, and the upper side contact member 54 and the film holding portion 6 are pulled toward each other. The film can be bundled from above and below. At this time, the bundled film is bundled at one bent portion of the grip rod 51 and the intermediate link 53. Temporarily, the position of the film fed from the second roller 42 and the third roller 43 are fed out. Even if the positions of the different films are different, the films can be cut by being bundled in one place. On the other hand, as shown in FIG. 7, the holding portion 55 is configured to hold the bundled film between the V-shaped plate material 50 v and the grip rod 51, and by the pressing force of the spring 56. The film can be held. On the other hand, the cutter 57 abuts the bundled film and slides the blade in the cutting direction. When the blade is slid, the pin 58 protruding in the horizontal direction from the grip rod 51 is brought into contact with the curved portion 59 of the cutter 57, and the cutter 57 is slid in the horizontal direction against the pressing force of the spring 56. ing.

  Next, in the wrap machine 1 configured as described above, an operation in the case of winding a film using a film roll 8a having a strong adhesive surface on the inside will be described with reference to FIG.

  First, when using the film roll 8a having a strong adhesive surface on the inner side, as shown in FIG. 8a, the film holder 6 is loaded so as to be left-handed in a plan view. Then, the film is drawn out from the film roll 8a so as to turn the first roller 41 clockwise and the second roller 42 counterclockwise. At this time, the film comes into contact with the first roller 41 and the second roller 42 in a large area, and the film can be stretched due to the difference in adhesive force of the film and the number of rotations of the roller. Then, the film is wound by rotating the turntable 20 with the grip rod 51 lying in a state where the end portion is sandwiched between the holding portions 55 of the cutting and holding mechanism 50 through the film.

  And after winding a film around the whole roll bale 9, the film holding part 6 is stopped in front of the grip rod 51, the grip rod 51 is stood up, and the film holding part 6 is rotated again. Then, the film is wound around the grip rod 51, and the grip rod 51 is tilted in this state. Then, the film is bundled at the bent portion between the grip rod 51 and the intermediate link 53 due to the deformation of the four-bar rotation link mechanism, and the bundled film is brought into contact with the blade of the cutter 57. The pin 58 of the grip rod 51 can be brought into contact with the curved portion 59 of the cutter 57, and the film can be cut by sliding the cutter 57 in the blade spanning direction.

  Next, operation | movement in the case of winding a film using the film roll 8b which has a strong adhesion surface on the outer side is demonstrated using FIG.8 (b).

  When using a film roll 8b having a strong adhesive surface on the outside, as shown in FIG. 8 (b), it is loaded into the film holding unit 6 so as to be right-handed in plan view. Then, the film roll 8b is loaded, and the film is drawn out therefrom, and the film is wound so that the first roller 41 rotates counterclockwise, the second roller 42 rotates clockwise, and the third roller 43 rotates counterclockwise. Then, since the film wound around the second roller 42 meanders to the third roller 43, the contact area with the second roller 42 is increased, and the film can be reliably stretched by the second roller 42. Then, the film is wound by rotating the turntable 20 in such a state that the end portion is sandwiched between the holding portions 55 of the cutting and holding mechanism 50 through the film.

  Then, after the film is wound around the entire roll bale 9, similarly, the film is wound around the grip rod 51 by temporarily stopping the film holding portion 6, raising the grip rod 51, and re-rotating the film holding portion 6. To tilt the grip rod 51. At this time, since the film is fed out from the third roller 43 side, the position of the film is as shown by a broken line in FIG. 10, but the film is moved between the grip rod 51 and the intermediate link 53 by the deformation of the four-bar rotation link mechanism. The film can be cut in the state where the film is bundled in the bent portion. Thereby, even if it is a case where the delivery position from the 3rd roller 43 differs, a film can be cut | disconnected reliably.

  Thus, according to the above-described embodiment, in the wrap machine 1 that winds a film around the surface of the roll bale 9, the film holding unit 6 that holds the cylindrical film roll 8 rotatably and the film roll 8 are fed out. The first roller 41 meandering the film, the second roller 42 meandering the film meandered by the first roller 41, and the meandering film meandered by the second roller 42 in the opposite direction. A third roller 43, and based on the direction of the adhesive surface of the film roll 8, the first roller 41 and the second roller 42 are meandered and wound around the roll bale 9, or from the first roller 41 Since it was possible to select whether to wind the roll bale 9 after meandering up to the third roller 43, on the inside The first roll 41 and the second roller 42 can be meandered and wound around the roll bale 9 for the film roll 8a having a contact surface, and the first roll 41 can be used for the film roll 8b having an adhesive surface on the outside. The three rollers 43 can be meandered and wound around the roll bale 9.

  In addition, since the second roller 42 is rotated faster than the first roller 41 and the third roller 43 is freely rotated, the film stretched by the first roller 41 and the second roller 42 is removed. In this state, the roll bale 9 can be fed out.

  Furthermore, it has the cutting | disconnection holding | maintenance mechanism 50 which cut | disconnects the film wound around the roll bale 9, and cut | disconnects the film drawn | fed out from the said 2nd roller 42, and the film drawn | fed out from the said 3rd roller 43 one. Since the cutting is performed by the cutter 57 of the mechanism 50, the film can be cut by one common cutting and holding mechanism 50 even when the feeding position from the roller is different.

  In addition, this invention is not limited to the said embodiment, It can implement in a various aspect.

  For example, in the above embodiment, the structure for revolving the film holding unit 6 has been described. However, the film may be wound by rotating the turntable 20 on the vertical axis. In this case, when the wound film is cut, the film may be sandwiched and bundled in one place in the same manner as in the above embodiment, or the turntable 20 may be inclined backward in the traveling direction. When the roll bale 9 is released to the field, the film may be cut with a cutter provided on the film holding portion side of the turntable 20. However, at this time, if the distance between the cutter of the turntable 20 and the film roll 8 is short, the position of the film fed from the second roller 42 and the position of the film fed from the third roller 43 are different. It becomes impossible to cut with a cutter. Therefore, a device is provided so that the feeding position from the third roller 43 and the feeding position from the second roller 42 are substantially matched so that the film is positioned at the cutter portion. As such a device, for example, even when each feeding position is different, an upward V-shaped guide is provided on the cutter side so as to absorb the difference in those positions, and the forward tilt of the turntable 20 is provided. In this case, there is a method of guiding films having different feeding positions to the cutter side with a V-shaped guide.

DESCRIPTION OF SYMBOLS 1 ... Lap machine 2 ... Rotating mechanism 20 ... Turntable 21 ... Roller 22 ... Belt 23 ... Rotating frame 3 ... Lapping mechanism 31 ... Stretch arm 4 ... Stretching mechanism 41 ... first roller 42 ... second roller 43 ... third roller 41g, 42g ... gear 50 ... cut and hold mechanism 51 ... grip rod 52 ... lower link 53 ... Intermediate link 54 ... Upper side contact member 55 ... Holding part 56 ... Spring 57 ... Cutter 58 ... Pin 59 ... Bending part 6 ... Film holding part 61 ... Insertion rod 65 ... lower end support portion 66 ... upper end support portion 71 ... lever 72 ... upper link member 74 ... side link member 75 ... slide rod 8, 8a, 8b ...・ Film roll 9 Ruberu

Claims (4)

In a lap machine for winding a film around the surface of a roll bale,
A film holding section for rotatably holding a cylindrical film roll;
A first roller that meanders the film fed from the film roll;
A second roller that causes the film fed from the first roller to meander in the opposite direction;
A third roller that further meanders the film fed out by the second roller in the opposite direction;
With
Based on the direction of the adhesive surface of the film roll, the first roller and the second roller are meandered and then wound on the roll bale, or the first roller and the third roller are meandered and then wound on the roll bale. A lap machine that can be selected. The lap machine according to claim 1, wherein the second roller is provided so as to be faster than a rotation speed of the first roller, and the third roller is freely rotated. A cutting mechanism for cutting the film wound around the roll bale, wherein the cutting position of the film fed from the second roller coincides with the cutting position of the film fed from the third roller. The lap machine according to 1. The wrap according to claim 1, wherein the first roller to the third roller are provided so as to be able to revolve with respect to the roll bale, and the film is cut by a cutting mechanism provided on the roll bale side. Machine.

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