JP3862364B2 - Multi working machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-work machine that covers a ridge surface with a multi-film fed out from a film roll by the progress of the machine body. More specifically, the tension acting on the film is kept almost constant from beginning to end. The present invention relates to a multi-work machine capable of making the conditions for covering the film with respect to all the time constant.
[0002]
[Prior art]
The multi-work machine is a state in which a predetermined brake torque is applied, a film roll whose both ends are supported by the frame, a slack absorbing roller disposed below and in front of the film roll, A treadle wheel for stepping on both ends in the width direction of the film that has been fed out from the film roll and immediately before coating, and only a central part in the width direction of the multi-film fed out from the film roll is partially The multi-film is rolled from the film roll against the brake torque by winding the slack absorbing roller and advancing the machine body in a state where both edges in the width direction of the multi-film immediately before coating are stepped on by the pressure wheel. The ridge surface immediately after being formed by the ridge forming plate, with the predetermined tension applied along both the front and rear, right and left, and the width direction Film is agricultural working machine configured for covering the.
[0003]
In the conventional multi-work machine M ′, the tension applied to the multi-film F immediately before being covered with the flange surface G by being unwound from the film roll 51 will be examined. As shown in FIGS. 14 and 15, P is a portion where the multi-film F is fed from both ends of the film roll 51, Q is a portion where the multi-film F is wound around both ends of the slack absorbing roller 52, and Let R be the portion to be processed. The tension lines PQ, PR, and QR indicated by alternate long and short dash lines are formed on the multi-film F that is fed out from the film roll 51 and travels in the aerial portion immediately before being covered with the ridge surface G. . The multi-film F is tensioned along the tension lines PQ, PR, and QR, that is, both in the width direction and in the front-rear direction as a whole, and covers the ridge surface G without looseness. Is done. In FIG. 14, reference numeral 54 denotes a compression spring for applying a brake torque to the film roll 51 by pressing the film roll 51 from the left and right.
[0004]
However, since the winding diameter of the multi-film F in the film roll 51 changes (becomes smaller) as the multi-operation proceeds, the multi-film F immediately after being fed out from the roll 51 is arranged in front of the roll 51. The bag shape itself formed by the slack absorbing roller 52 is changed. That is, the lengths of the tension line PQ and the tension line PR change. In the example of FIG. 14, the tension line PQ becomes shorter and the tension line PR becomes longer. For this reason, the tension (width direction tension) of the portion of the tension line PQ in the multi-film F that is unrolled from the film roll 51 and immediately before being covered with the flange surface G is reduced, whereas the portion of the PR is the same. Tension (tension in the front-rear direction) increases. As a result, the magnitude of the tension line QR also changes. When viewed as a whole, the tension acting on the central portion in the width direction is reduced, and the tension acting on both ends in the width direction is increased. This phenomenon becomes conspicuous as the multi-work progresses and the diameter of the film roll 51 decreases, so when the multi-work starts from one end of the heel and ends at the other end, In the portion close to the end, the central portion of the coated multi-film F may partially loosen, which is not preferable. As a result, the saddle face G cannot be covered in a certain state, or the pressing state of the treading wheel 53 against the multi-film F tends to become unstable. In addition, the multi-film F may be detached from the tread wheel 53.
[0005]
Depending on the multi-film, it is also necessary to perform multi-operation by distinguishing the front and back. For example, there is a multi-film that is white on one side and black on the other side. In the case of this multi-film, the white side is covered as the surface in summer and the black side is covered as a surface in winter. Therefore, this is dealt with by reversing the feeding position from the film roll. When the feeding position of the multi-film from the film roll is reversed as in this example, the tension change at the portion of each tension line formed on the multi-film is opposite to the above, and the multi-operation progresses. Along with this, the tension in the central portion in the width direction of the multi-film increases.
[0006]
In recent years, a paper multi-film may be used in place of the vinyl multi-film in order to improve the air permeability of the bag. In the case of paper, since the elasticity is remarkably poor compared to that made of vinyl, problems are likely to occur due to slight changes in tension. In the case of such a multi-film, it is necessary to keep the above tension constant throughout.
[0007]
[Problems to be solved by the invention]
In view of the above-mentioned problems, the present invention makes the tension applied to the multi-film fed from the film roll almost constant by simple improvement of the multi-work machine, so that the covering state of the multi-film on the surface is always constant. The task is to do.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a film roll having both ends supported by a frame and a lower part of the film roll, and can be rotated forward of the film roll, with a predetermined brake torque applied. A slack absorbing roller disposed on the film roll, and a pair of left and right treading wheels for stepping on both ends in the width direction of the film that has been unrolled from the film roll and immediately before coating, and a multi-film unrolled from the film roll. By partially winding only the central portion in the width direction around the slack absorbing roller, and by advancing the machine body in a state where both end edges in the width direction of the multi-film are stepped on by the pair of pressure wheels, by feeding a multi-film, a multi-task machine configuration for covering a ridge surface immediately after being formed by a ridge forming plate, the looseness absorbing low Is is the air arranged without contact with the ridge surface has a length and a position engaged over only the central portion in the width direction of the multi-film, a lower than the film roll, yet from the looseness absorbing roller An intermediate guide roller that is approximately the same length as the film roll is rotatably disposed in the rear part, and the multi-film is a hooking site immediately before the pair of treading wheels at the center and both ends in the width direction. Are wound around the slack absorbing roller through the intermediate guide roller so that each of them is a slack absorbing roller and a middle guide roller. It is the structure covered with a collar surface in the inclination state to which both tension | tensile_strength of the front-back direction and the width direction was provided in between.
[0009]
The multi-film fed from the film roll is wound around the loose absorption roller via the intermediate guide roller, and the distance between the intermediate guide roller and the loose absorption roller is unchanged. For this reason, even if the multi-work progresses and the diameter of the film roll changes, the part where the multi-film is wound around both ends of the intermediate guide roller, the part where the multi-film is wound around both ends of the slack absorbing roller, and the pair of left and right Each interval between the stepping pressure by the stepping wheel and the drawing angle of the multi-film is unchanged, and the tension acting on the multi-film is constant in these portions. Therefore, regardless of the change in the winding diameter of the multi-film on the film roll, the tension in the width direction and the front-rear direction of the multi-film immediately before being coated on the surface is almost constant from beginning to end, so that the multi-film covering state is Constant throughout.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to examples. 1 is a side view of a multi-work machine M according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a rear view of the same, FIG. 4 is a perspective view of a saddle forming plate 6, and FIG. FIG. 6 is a front view of the end portion of the film roll 13 with a part broken away, FIG. 7 is a perspective view of FIG. 5, and FIG. As shown in FIG. 1 to FIG. 3, the multi-work machine M according to the present invention is connected to the connector 2 behind the tillage device A attached to the rear portion of the tractor (not shown) via the three-point link 1. It is attached integrally via The frame of the multi-work machine M includes a horizontal machine frame 3 disposed along the width direction thereof, a pair of vertical machine frames 4 fixed substantially vertically to a lower end surface of the horizontal machine frame 3, and the horizontal machine. It consists of a pair of rear machine frames 5 fixed rearward from the vicinity of both ends of the frame 3. Below the horizontal machine casing 3 and inside the pair of vertical machine casings 4, a ridge forming plate 6 described later is disposed. Further, on the outside of the pair of vertical machine casings 4, grounding wheels 7 are mounted so as to be freely rotatable. By changing the mounting position of the grounding wheel 7 in the height direction of the machine body, the tilling depth can be changed. The rear portions of the pair of rear machine frames 5 are bent downward, and a pair of tread wheels 8 are attached to lower ends of the rear machine frames 5 so as to be freely rotatable at predetermined intervals along the width direction of the machine body. . The pair of pedaling wheels 8 are mounted with their front portions slightly tilted inward in plan view. Furthermore, a cover ring 9 is mounted on the rear part of the pair of pedaling wheels 8. These covering rings 9 are mounted so as to be inclined so as to be opened forward in plan view. In FIG. 1, reference numeral 11 denotes a tractor wheel.
[0011]
Next, the scissors forming plate 6 will be described with reference to FIG. This saddle-molded plate 6 is composed of a main molded portion 6a having a trapezoidal cross section whose height is lowered toward the rear, and a narrow groove molded portion 6b provided on the outer side in the width direction. The narrow groove forming portion 6b extends rearward beyond the rear end portion of the main forming portion 6a. The main molding portion 6a of the ridge-molded plate 6 can change the mounting position in the height direction and the inner width thereof by a method not shown. Therefore, the wrinkle forming plate 6 can form wrinkles of various sizes. An earthen plate 12 is attached in front of the eaves forming plate 6. The earthen plate 12 is expanded toward the front so that the soil softened by the cultivator A disposed immediately before the earthen plate 12 can be easily approached.
[0012]
A film roll 13 is disposed above the ridge forming plate 6 along the width direction of the machine body. As shown in FIGS. 5 and 6, the film roll 13 has a configuration in which multiple films F are wound around a cylindrical paper tube 13 a in multiple layers. Both end portions of the film roll 13 are supported via a paper tube chuck 18 (described later) in which a compression spring 15 (described later) is elastically mounted on the lower end portion 14a of the L-shaped and rectangular film roll bracket 14 respectively. Has been. The film roll bracket 14 is inserted into an upper portion of the pair of rear machine frames 5 through a rectangular tube body 16 fixed along the width direction of the machine body. Each fastening bolt 17 is screwed to both ends of the rectangular tube body 16, and the film roll 13 is attached by loosening the fastening bolt 17 and moving each film roll bracket 14 along the width direction of the machine body. The position can be adjusted. Further, the film roll 13 can be replaced by pulling out each film roll bracket 14 from the rectangular tube body 16.
[0013]
The film roll 13 is gripped in a state in which the portion of the paper tube 13 a at the center is pressed from both sides by a pair of conical paper tube chucks 18 and is rotatably supported by the pair of support bars 19. . The paper tube chuck 18 includes a conical chuck portion 18a and an insertion hole 18b provided in the axial direction of the chuck portion 18a. A support rod 19 made of a pipe material is inserted into the insertion hole 18b. The support rod is supported so as to be movable in the axial direction. A plurality of pin holes 19 a are provided in the inner portion of the support bar 19 perpendicular to the longitudinal direction of the support bar 19, and a stop pin 20 is inserted into the predetermined pin hole 19 a. A washer 30 is mounted between the stop pin 20 and the inner end face of the paper tube chuck 18. A compression spring 15 is elastically mounted between the rear end surface of the paper tube chuck 18 and the lower end portion 14 a of the film roll bracket 14, and the pair of paper tube chucks 18 approach each other by the elastic restoring force of the compression spring 15. It is energized in the direction to do. When the film roll 13 is attached to the pair of paper tube chucks 18, the chuck portions 18 a of the paper tube chuck 18 are inserted into both ends of the hole portions of the paper tube 13 a in the film roll 13. Since the maximum outer diameter of the chuck portion 18a is larger than the inner diameter of the hole portion of the paper tube 13a, the chuck portion 18a of the paper tube chuck 18 contacts the outer peripheral edge 13b of the hole portion of the paper tube 13a. In this state, the pair of film roll brackets 14 is moved slightly further inward. As a result, both the paper tube chucks 18 are pressed slightly inward, and a slight gap is formed between the inner end surface of the paper tube chuck 18 and the washer 30. Thus, all of the elastic restoring force of the compression spring 15 acts on the portion of the paper tube 13a via the paper tube chuck 18, and the pair of paper tube chucks 18 is pressed against the paper tube 13a. This elastic restoring force acts on the film roll 13 as a brake torque. By adjusting the position of the pin hole 19a through which the stop pin 20 is inserted, the magnitude of the urging force of the compression spring 15 that presses the paper tube chuck 18 can be adjusted. That is, the film roll 13 is supported in a state where a brake torque is applied by the urging force of the compression spring 15 of the pair of paper tube chucks 18 inserted at both ends thereof. When the multi-film F is fed out from the film roll 13, it is fed out against the brake torque.
[0014]
A slack absorbing roller 21 is disposed below the film roll 13 and in front of the machine body in the traveling direction Z (see FIG. 1). As shown in FIGS. 5 and 7, the length of the slack absorbing roller 21 is shorter than that of the film roll 13, and is disposed along the axial direction of the film roll 13 and at substantially the center of the film roll 13. ing. The slack absorbing roller 21 is rotatably attached to the front end of a U-shaped slack absorbing roller bracket 22 in plan view. A guide member 22a made of a square tube is fixed to the base end portion of the slack absorbing roller bracket 22, and a tightening bolt 23 is screwed together. A support member 24 having a square cross section is inserted through the hollow portion of the guide member 22a along the height direction of the machine body. Then, when the tightening bolt 23 is tightened, the slack absorbing roller bracket 22 is fixed at a predetermined position on the support member 24. That is, the slack absorbing roller 21 is disposed at a predetermined position in the height direction of the machine body.
[0015]
The support member 24 is bent at a substantially right angle along the longitudinal direction of the machine body, and a horizontal portion 24a above the support member 24 is inserted into a guide member 16a fixed to a substantially central portion of the rectangular tube body 16. A tightening bolt 25 is screwed onto the guide member 16a. By loosening the tightening bolt 25, the mounting position of the support member 24 can be moved along the longitudinal direction of the machine body. That is, the attachment position of the slack absorbing roller 21 can be adjusted.
[0016]
An intermediate guide roller 27 is disposed below the film roll 13 and above the slack absorbing roller 21 described above. As shown in FIGS. 5 and 7, the intermediate guide roller 27 is disposed almost directly below the film roll 13 and along the axial direction thereof. And the length is a little longer than the film roll 13. As in this embodiment, the outer diameter of the intermediate guide roller 27 may be smaller than the outer diameter of the slack absorbing roller 21. Both end portions of the intermediate guide roller 27 are rotatably attached to one end portions of the pair of arms 28. The other end of the arm 28 is connected by a connecting rod 29. The connecting rod 29 is attached to the lower end of a U-shaped guide roller bracket 31 in plan view. Therefore, the intermediate guide roller 27 can rotate around the axis of the connecting rod 29. The guide roller bracket 31 is disposed slightly obliquely so as not to interfere with the film roll 13. A support member 31a is fixed to the base end portion of the guide roller bracket 31 along the vertical direction of the fuselage, and the upper portion of the support member 31a is attached to the horizontal portion 24a of the support member 24 of the slack absorbing roller 21. The guide member 32 is inserted. As shown in FIG. 8, the guide member 32 has a configuration in which two rectangular tubes 32 a and 32 b are fixed substantially orthogonally, and fastening bolts 33 and 34 are screwed into the guide member 32. The horizontal portion 24a of the support member 24 is inserted into the rectangular tube 32a disposed in the horizontal direction in the guide member 32. Similarly, the support member 31a is inserted into the rectangular tube 32b arranged in the vertical direction. Each support member 24, 31a is fixed by tightening each tightening bolt 33, 34. Therefore, by loosening the tightening bolts 33 and 34, it is possible to adjust the mounting position along the longitudinal direction of the machine body and the mounting position along the height direction of the machine body on the intermediate guide roller 27. In the case of the present embodiment, the intermediate guide roller 27 is disposed so as to be loosened and pressed against the absorbing roller 21 by its own weight.
[0017]
The operation of the multi-work machine M according to the present invention will be described. As shown in FIG. 1, when the integrated tiller A and the multi-work machine M are pulled by a tractor (not shown) and travel in the direction of arrow Z, the tiller A expands the soil. Is done. A trapezoidal cross section of the trapezoidal shape is formed by the rod forming plate 6 disposed immediately after the tilling device A. At the same time, both ends of the multi-film F disposed on the hem portions 35 of the heel are stepped on by the pair of tread wheels 8, and the aircraft advances in this state, so that the multi-film F resists the braking torque from the film roll 13. Then it is paid out. The multi-film F is wound around the intermediate guide roller 27 from the rear, and is then wound around the slack absorbing roller 21 disposed in front of the multi-film F so that the central portion thereof is covered with the surface G. Both end edges of the multi-film F immediately after covering are covered with a covering ring 9 disposed immediately after the pair of treading wheels 8, and the covering state is maintained.
[0018]
With reference to FIGS. 9 to 11, a description will be given of the state of tension acting on the multi-film F immediately before being covered with the flange surface G in the multi-work machine M according to the present invention. The part of the both ends where the multi film F is drawn out from the film roll 13 is denoted by P, the part of both ends wound around the loose absorbing roller 21 is denoted by Q, and the part of the multi-film F that is stepped on by the pair of pressure wheels 8 is denoted by R. A portion where the multi-film F is about to be separated from the intermediate guide roller 27 is denoted by S. The multi-film F is loosely wound around the absorbing roller 21 via the intermediate guide roller 27. Moreover, the distance between the intermediate guide roller 27 and the slack absorbing roller 21 is constant (invariable). Therefore, the bag shape formed by the loose absorption roller 21 of the multi-film F immediately after being fed out from the film roll 13 is invariant regardless of the change in the winding diameter of the film roll 13. That is, the multi-film F fed out from the film roll 13 is wound around the slack absorbing roller 21 shorter than the intermediate guide roller 27 via the intermediate guide roller 27. Therefore, the multi-film F has a bag shape, and tension lines QR and RS indicated by alternate long and short dash lines are formed on the multi-film F traveling in the aerial portion immediately before being covered with the ridge surface G. . Further, since the multi-film F is wound around the loose absorption roller 21, both ends thereof are loosened and pulled by the absorption roller 21. A tension is applied to the multi-film F along these tension lines QR and RS, that is, along both the width direction and the front-rear direction as a whole, and the ridge surface G is covered without looseness. . The ratio between the tension line QR and the RS is always constant.
[0019]
When the multi-operation proceeds and the multi-film F is unwound from the film roll 13 and the winding diameter of the film roll 13 is reduced, the angle of the portion of the tension line PS formed between the film roll 13 and the intermediate guide roller 27 Changes. The change is shown by a two-dot chain line in FIG. However, the brake torque (the urging force of the compression spring 15) serving as the resistance of the film roll 13 is constant, and the tension acting on the multifilm F that is fed out is reduced by reducing the roll diameter of the roll 13. Although the length of the tension line QR and the length of the RS is constant, the ratio of the tension applied to these portions is the magnitude of the tension acting on the multifilm F. It is constant regardless. As a result, even if the angle of the portion of the tension line PS changes, the ratio between the tension line QR acting on the multi-film F immediately before being covered with the collar surface G and the tension of the portion of the same RS is always constant. . In addition, since the intermediate guide roller 27 is longer than the film roll 13, the multi-film F fed out from the film roll 13 does not come off from either end of the intermediate guide roller 27. As a result, since the “tension state” of the multi-film F does not change, the covering state of the multi-film F on the flange surface G is substantially constant.
[0020]
Some multi-films have front and back sides. In the case of such a multi-film, as shown in FIG. 12, the feeding position P of the multi-film F is reversed (P ′) in the film roll 13. However, in the case of the multi-work machine M according to the present invention, the change in the tension at the portion of the tension line P ′S hardly reaches the tension of the multi-film F immediately before being covered with the flange surface G. Therefore, even if the feeding position P of the multi-film F is reversed, the ridge surface G can be covered as it is.
[0021]
In the present embodiment, the intermediate guide roller 27 is disposed so as to press the loose absorption roller 21, but as shown in FIG. 13, the intermediate guide roller 27 and the loose absorption roller 21 are separated by a predetermined distance. The structure arrange | positioned with L may be sufficient. In this embodiment, by changing the position of the intermediate guide roller 27 in the front-rear direction, the length of the tension line between the slack absorbing roller 21 and the pressure wheel 8 is made constant, so that the intermediate guide roller 27 and the pressure wheel 8 are fixed. Since the length of the tension line between the tension lines can be changed, the ratio of the tensions acting on both tension lines can be changed, and the “tension state” of the multi-film F can be changed slightly. Is possible.
[0022]
The cross-sectional shape of the ridge may be other than a trapezoidal shape, for example, a semicircular shape. Furthermore, you may comprise the multi-function machine which connected the structure based on this invention in multiple groups.
[0023]
【The invention's effect】
In the multi-work machine according to the present invention, the slack absorbing roller has a length and a position that are hung only at the central portion in the width direction of the multi-film, and is arranged in the air without touching the ridge surface. An intermediate guide roller having a lower length and an approximately equal length to the film roll is rotatably disposed in a rear portion of the slack absorbing roller, and the multi-film has a central portion and both end portions in the width direction. The slack absorbing roller and the intermediate guide roller are wound around the slack absorbing roller via the intermediate guide roller so that the hooking parts immediately before the pair of treading pressure wheels are respectively the slack absorbing roller and the intermediate guide roller. And the pair of left and right treading wheels are covered with a collar surface in an inclined state in which both tensions in the front-rear direction and the width direction are applied. Therefore, the following effects can be achieved. (1) The tension line of the multi-film immediately before being coated on the surface is almost constant from start to finish regardless of the roll diameter of the film roll. Therefore, the tension | tensile_strength of the tension | tensile_strength line in this multi film does not change, but the covering state of the multi film with respect to a collar surface is constant from beginning to end. (2) Even if the feeding position is reversed depending on the type of the multi-film, the tension of the multi-film immediately before being coated on the heel surface hardly changes. Therefore, multi-operation of multi-films having front and back surfaces is possible. (3) Since the tension of the multi-film immediately before being coated on the heel surface is almost constant from beginning to end, it is possible to cover even a multi-film with extremely poor stretchability, such as a paper multi-film.
[Brief description of the drawings]
FIG. 1 is a side view of a multi-work machine M according to the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a rear view of the same.
FIG. 4 is a perspective view of a ridge forming plate 6;
FIG. 5 is a side view of the main part of the multi-work machine M according to the present invention.
FIG. 6 is a front view of an end portion of a film roll 13 with a part thereof broken.
7 is a perspective view of FIG. 5. FIG.
FIG. 8 is a view on arrow X in FIG. 5;
FIG. 9 is a perspective view for explaining a state of tension acting on the multi-film F immediately before being covered with the flange surface G. FIG.
10 is a side view of FIG. 9. FIG.
FIG. 11 is also a rear view.
12 is a side view of an embodiment in which the multi-film F is fed out from the opposite side of the film roll 13. FIG.
13 is a side view of an embodiment in which the intermediate guide roller 27 and the slack absorbing roller 21 are separated by a predetermined distance L. FIG.
FIG. 14 is a perspective view for explaining a state of tension acting on the multi-film F just before being covered with the flange surface G in the conventional multi-work machine M ′.
FIG. 15 is a side view of the same.
[Explanation of symbols]
F: Multi film G: Saddle surface L: Distance between the intermediate guide roller and the slack absorbing roller (predetermined distance)
M: Multi working machine PS: Tension line (tension)
QR: Tension line (tension)
QS: tension line (tension)
RS: Tension line (tension)
3: Horizontal machine frame
4: Vertical machine frame
5: Rear frame (frame)
6: Saddle forming plate 8: Treading wheel 13: Film roll 15: Compression spring (brake torque)
21: Looseness absorbing roller 27: Intermediate guide roller 28: Arm

Claims (4)

A film roll having both ends supported by a frame in a state where a predetermined brake torque is applied, a slack absorbing roller disposed below the film roll and rotatably disposed in front of the film roll, and the film A pair of left and right treading wheels for stepping on both ends in the width direction of the film immediately before being covered by the roll,
In a state where only the central portion in the width direction of the multi-film fed out from the film roll is partially wound around the looseness absorption roller, and both end edges in the width direction of the multi-film are stepped on with the pair of pressure wheels, By advancing the machine body, the multi-work machine is configured to feed out the multi-film from the film roll and cover the heel face immediately after being formed by the heel-forming plate,
The slack absorbing roller has a length and a position that are hung only at the center in the width direction of the multi-film, and is disposed in the air without contacting the ridge surface , and is below the film roll, and An intermediate guide roller, which is approximately the same length as the film roll, is rotatably disposed in the rear part of the slack absorbing roller,
The multi-film absorbs the slackness through the intermediate guide roller so that the hooking portions immediately before the pair of treading wheels at the center and both ends in the width direction become a slack absorbing roller and a middle guide roller, respectively. It is wound around a roller and covered with a saddle surface in an inclined state in which tension in both the front-rear direction and the width direction is applied between both the loose absorption roller and the intermediate guide roller and a pair of left and right treading pressure wheels. A multi-function machine characterized by having a configuration.   Both ends of the intermediate guide roller are attached to a pair of arms rotatably supported by a frame, and the intermediate guide roller is in pressure contact with the slack absorbing roller by a rotational force based on its own weight. The multi-function machine according to claim 1.   The multi-work machine according to claim 1, wherein the intermediate guide roller is disposed at a predetermined interval from the slack absorbing roller.   The multi-work machine according to claim 3, wherein a mounting position of the intermediate guide roller in the front-rear direction is adjustable.

Images