JP5799456B2 - Variable diameter roll baler - Google Patents

Description

  The present invention relates to a variable diameter roll baler capable of forming roll bales having different diameters.

  A roll baler capable of forming roll balers with different diameters is produced when the material to be molded put into the molding chamber is formed into a cylindrical roll bale. It is known to expand.

  The molding chamber described in the following Patent Document 1 is opened downward so that the inlet is continuous with the pickup portion of the molding material, and the molding materials introduced into the molding chamber through the inlet from the pickup portion are mutually connected. It is formed into a cylindrical roll bale by a belt that faces and moves in the opposite direction. And the pressure accompanying the enlargement of the diameter of the roll bale acts on the belt, and the roller around which the belt is wound by this pressure is displaced upward to oppose the opening direction of the inlet, so that the molding chamber is enlarged. It has become.

  In the molding chamber described in Patent Document 2, the input port is opened slightly below the center of the molding chamber and obliquely downward, and a molding material to be input into the molding chamber from a conveyor disposed toward the input port is provided. A cylindrical roll bale is formed by the rotation of the tight bar. And the pressure accompanying the expansion of the diameter of the roll bale acts on the tight bar, and by displacing the tight bar radially outward with this pressure, the molding chamber is expanded with the diameter and shape of the roll bale. Yes.

  In the molding chambers of these patent documents 1 and 2, the force acts in the direction of reducing the diameter (the direction in which the roll bale is compressed) at the same time that the diameter of the molding chamber is increased. The roll bale is molded while being compressed by the force in the reducing direction.

Japanese Patent Laid-Open No. 60-188013 JP 2007-267675 A

  According to the prior arts of Patent Document 1 and Patent Document 2, the molding chamber expands with the diameter and shape of the roll bale, and force is generated in the direction of contracting the molding chamber simultaneously with this expansion. From a roll bale to a large diameter roll bale, a tight roll bale can be formed in a stepless manner.

  However, some of the above-mentioned molding materials are chopped, but such molding materials are difficult to be organized and may easily collapse during roll bale molding. In particular, in the prior art of Patent Document 1, the downward compressive force generated by the upward displacement of the roll bale is the strongest in the entire molding chamber, so that the compression acts in the direction toward the opening of the inlet. There is a problem in that the material to be molded leaks out from the inlet while being collapsed toward the inlet due to the force.

  In the prior art of Patent Document 2, it is a configuration in which a compressive force acts on the roll bale to be formed in the radial direction from the peripheral surface of the roll bale excluding the inlet, but also in such a molding chamber. Depending on the type of molding material, there is a problem that the molding material does not enter the molding chamber when the molding chamber is almost full due to the compressive force directed diagonally downward. .

  Therefore, in the case of a roll baler having a molding chamber such as Patent Document 1 and Patent Document 2, in the molding of the roll bale, the molding material does not enter the molding chamber as described above, so that the molding material is moved out of the molding chamber. There was a problem that leakage occurred, and the material to be molded was wasted due to this leakage, or that a roll veil having a good shape and tightening could not be formed efficiently.

  An object of the present invention is to deal with such a problem. In other words, the molding material can be effectively used without waste by preventing the molding material from leaking from the inlet during roll bale molding and preventing the molding material from leaking from the inlet. In addition, the molding material can be smoothly put into the molding chamber even when the molding chamber is almost full, and a well-shaped and tight roll bale can be formed, and an efficient roll bale can be formed. Is the object of the present invention.

  In order to achieve such an object, the variable diameter roll baler according to the present invention has at least the following configuration.

A roll bale molding chamber for compressing and molding the molding material into a roll bale using one or a plurality of belts, and an input conveyor for charging the molding material into the roll bale molding chamber, From the center of the roll bale molding chamber so as to expand the roll bale molding chamber in accordance with the diameter of the roll veil to be formed and the belt is wound and molded. A variable roller whose position is pivotally supported, and the variable roller is pivotally supported so as to face the circumferential direction of the roll bale, and the first movable roller and the second movable roller. A third movable roller that is pivotally supported on the outer side in the variable direction with respect to the two movable rollers, and the roll bale forming chamber is defined with respect to the first movable roller and the second movable roller. A concavity communicating with the roll bale molding chamber is obtained by winding while bringing the opposite side surface into contact with the third movable roller and bringing the roll bale molding chamber side surface into contact with the third movable roller. A scraper that suppresses intrusion of the material to be molded into the recess, and is configured so that an opening direction of the input port does not face a variable direction of the variable roller. It is provided as follows.

  By having such characteristics, the present invention has the following effects. In other words, according to the diameter of the roll bale to be molded, a variable roller that is pivotally supported by a variable position from the center of the roll bale molding chamber so as to expand the roll bale molding chamber, Since the input port is provided so that the opening direction of the input port does not face the variable direction of the variable roller, leakage of the molding material from the input port during roll bale molding can be prevented. By preventing the molding material from leaking from the inlet, the molding material can be used effectively without waste, and when the molding chamber is nearly full, the molding material can be smoothly transferred to the molding chamber. It is possible to form a roll veil that can be inserted and has a good shape, and to efficiently form a roll bale.

The schematic block diagram which shows 1st Embodiment of the variable diameter roll baler which concerns on this invention. FIG. 1 is an enlarged view of the roll bale molding chamber in FIG. 1 and shows the minimum roll bale molding state. The largest roll bale molding state is shown in the enlarged view of the roll bale molding chamber in FIG. The schematic block diagram which shows 2nd Embodiment of the variable diameter roll baler which concerns on this invention. The expansion schematic block diagram of the roll bale molding room which shows 3rd Embodiment of the variable diameter roll baler which concerns on this invention. The minimum roll bale molding state is shown in the roll bale molding chamber in FIG.

  The molding material that the variable diameter roll baler of the present invention can form a roll bale includes feed crops such as green corn and pasture, mixed food such as food residues after food processing, rough feed and concentrated feed, etc. Various materials used for livestock feed, various materials used for fertilizers such as rice husks, wheat husks, wood chips, sawdust, litter, and livestock manure. The variable diameter roll baler of the present invention is of a chopping type that is particularly effective for forming a material to be formed by chopping the above-mentioned various materials into a roll bale.

  The aforementioned variable-diameter roll baler includes a towed type, a self-propelled type, and a stationary type that are pulled by a traveling vehicle such as a tractor. In addition, this variable diameter roll baler is a roll in which binding materials and packing materials such as nets, twains (ropes) and sheets are wound around the formed roll bale and discharged to the field, and rolls in which the binding materials and packing materials are wound Including composite type with wrapping machine for wrapping bale.

  Even if the charging port is below the center position of the maximum diameter of the roll bale to be molded, the above-described configuration can prevent the phenomenon of the material to be molded, but more preferably, the maximum size of the roll bale to be molded is maximum. It is above the center position of the diameter.

To be molding material is reliably turned by a roll bale chamber, superimposed in that use this the molded material without waste effectively, the lower flow end of the feed conveyor, in the vertical direction and the lower end of the inlet It is preferable to arrange so as to.

Furthermore, the variable diameter roll baler of the present invention is a variable diameter roll baler provided with a roll bale forming chamber having a plurality of belts, and the roller on the input conveyor side of the belt disposed at the lower part of the roll bale forming chamber is a roll it is preferably provided so as to be located in the feed conveyor side of the rollers of the other belt constituting the bale forming chamber.

  Hereinafter, a first embodiment of a variable diameter roll baler (hereinafter referred to as a roll baler) 1 will be described with reference to the drawings. The roll baler 1 exemplified in the present embodiment is a chopped roll baler 1 suitable for forming a molding material (not shown) obtained by chopping feed crops such as green corn and pasture into a roll bale.

  The basic configuration of the roll baler 1 includes a hopper 2, a charging conveyor 3, and a roll bale molding chamber (hereinafter referred to as a molding chamber) 4 from the upstream side, and the molding material stored in the hopper 2 is passed through the charging conveyor 3. The roll bales R1 and R2 (see FIGS. 2 and 3) are molded by the molding chamber 4 being driven by the molding drive. When the roll bales R1 and R2 are formed to have a predetermined diameter, the input conveyor 3 is stopped and the net 10 is supplied from the net supply unit 1A to the forming chamber 4, and the roll bale R1 is driven by the forming drive of the forming chamber 4. After the winding of the net 10 is finished, the downstream half 4A of the molding chamber 4 is opened (not shown) and the roll bales R1 and R2 are discharged out of the machine. The net 10 is supplied from an input port 40 secured in the molding chamber 4.

  In the present embodiment, the hopper 2 side (left side in FIG. 1) is the upstream side, and the molding chamber 4 side (right side in FIG. 1) is the downstream side. Moreover, although the form which winds the net | network 10 around roll bale R1, R2 was illustrated in this embodiment, the roll baler of this invention replaces with the net | network 10 and forms the twain wound around roll bale R1, R2. In this case, a twain supply unit is installed in place of the net supply unit 1A (not shown).

  The hopper 2 is a space on the uppermost stream side (left side in FIG. 1) of the roll baler 1, which is partitioned by a charging conveyor 3 installed so as to constitute a part of the hopper 2 between the molding chamber 4 and FIG. Is a space having an inverted triangular shape. The molding material stored in the hopper 2 is transported by the input conveyor 3 and is input into the molding chamber 4 from the input port 40.

  The input conveyor 3 is installed in an inclined shape from a position below the lowermost part 20 of the hopper 2 to the input port 40. A plurality of support protrusions 31 are provided on the surface of the conveyor belt 30 of the input conveyor 3 so as to support the material to be molded. The support protrusions 31 support the material to be transported to support the material to be molded. It is possible to prevent the material from sliding down along the inclination of the input conveyor 3. Further, the downstream end portion 32 of the input conveyor 3 is arranged so as to overlap the lower end portion 40A of the input port 40 in the vertical direction, and when the material to be molded is input to the input port 40, the material to be molded is spilled down. Is suppressed. Further, the upstream end portion 33 of the charging conveyor 3 is disposed directly below the lowermost portion 20 of the hopper 2.

  The molding chamber 4 compresses and molds the material to be molded into roll bales R1 and R2 using a plurality of belts 6, 7, and 8, and the belt 6 according to the diameter of the roll bales R1 and R2 to be molded. The position from the center C of the molding chamber 4 is variably provided, and an insertion port 40 is secured between the belt 6 and the belt 7.

  The molding chamber 4 is configured by arranging belts 6, 7, and 8 along the circumferential direction of the roll bale. Note that the molding chamber 4 actually includes a side plate (not shown) provided from the hopper 2 to the molding chamber 4. The same applies to the hopper 2 and includes the aforementioned side plate.

  The belt 6 constitutes the downstream half 4A of the molding chamber 4 with the insertion port 40 as a boundary. The first movable roller 6A and the second movable roller 6B, which are examples of variable rollers, and eight fixed rollers. 6C to 6E and fixed rollers 6G to 6K and one movable tension roller 6F are wound and stretched endlessly. The movable roller 6A, the second movable roller 6B, and the fixed rollers 6C to 6K are rotatably supported with their axis lines parallel to the axis lines of the roll bales R1 and R2.

  One end of each of the first movable roller 6A and the second movable roller 6B is pivotally supported by a movable arm 60 that is pivotally supported by a rotation axis P whose axis is parallel to the axis of the roll bail R1 or R2, and the other end is previously described. Are supported by long holes 61, 61 opened in the side plate. The first movable roller 6A and the second movable roller 6B are configured such that the pressing force against the belt 6 of the roll bales R1 and R2 being formed acts via the belt 6, and the pressing force causes a long time. It moves from the center C of the molding chamber 4 to the downstream side along the holes 61 and 61. By moving the first movable roller 6A and the second movable roller 6B to the downstream side, the position of the belt 6 from the center C of the molding chamber 4 can be made variable.

  The long holes 61 and 61 are formed so that the longitudinal direction is an arc concentric with the rotation axis P of the movable arm 60. The movable arm 60 is configured to rotate about the rotation axis P with the movement of the first movable roller 6A and the second movable roller 6B.

  A hydraulic cylinder 62 is connected to the upper end of the movable arm 60 with the rotation axis P as a boundary. The hydraulic cylinder 62 is applied with pressure in the direction of contraction, and expands against the aforementioned pressure as the movable arm 60 rotates as the first movable roller 6A and the second movable roller 6B move. It has become. The hydraulic cylinder 62 is controlled to have a constant pressure regardless of the rotational position of the movable arm 60. Further, an angle meter is installed on the rotation axis P of the movable arm 60, and when the set angle is reached, the conveyance drive of the input conveyor 3 is stopped and the supply of the net 10 is started. ing.

  That is, since the conveyance drive of the input conveyor 3 is controlled to stop when the roll bale reaches the target diameter, the roll bale with the target diameter can be reliably formed. Further, when the position of the belt 6 changes from the center of the molding chamber 4 to the outside, the pressure in the contraction direction of the hydraulic cylinder 62 acts on the belt 6 via the movable arm 60, and the contraction direction that acts on the belt 6. By applying a pressure to the roll bale, a roll bale with a good shape can be formed.

  Further, the long holes 61 and 61 are opened such that the longitudinal direction thereof intersects the opening direction of the charging port 40 substantially at right angles, and the first movable roller 6A that moves along the long holes 61 and 61, The moving direction of the second movable roller 6B is not made to face the opening direction of the insertion port 40. That is, when the pressure of the hydraulic cylinder 62 acts on the first movable roller 6A and the second movable roller 6B via the movable arm 60, the first movable roller 6A and the first movable roller 6A for the roll bales R1 and R2 formed in the molding chamber 4 2 The pressure of the movable roller 6B in the direction of the center C of the molding chamber 4 acts in a direction intersecting the opening direction of the charging port 40, and compresses the roll bales R1 and R2 from the direction not facing the opening direction of the charging port 40. Therefore, it is possible to suppress the collapse of the roll bales R1 and R2 in the vicinity of the inlet 40 that is most likely to collapse, and to prevent a phenomenon that the molding material does not enter the molding chamber 4.

  It should be noted that when the net 10 is wound around the formed roll bale R1, R2 by a predetermined amount, the driving source may be controlled to stop driving, or when the driving source driving is stopped. In addition, this drive stop may be notified by lighting or blinking of a lamp or the like, or by a sound of a buzzer or the like (not shown). Further, the molding chamber 4 may be controlled to automatically open when the drive source stops driving, or manually operated when the drive source is stopped by the lamp or the buzzer described above. The molding chamber 4 may be opened by

  The belt 7 constitutes the inlet 40 side of the upstream half 4B of the molding chamber 4 with the inlet 40 as a boundary, and is wound and stretched around two fixed rollers 7A and 7B. The fixed rollers 7A and 7B have their axes parallel to the axes of the fixed rollers 6C to 6K.

  The fixed roller 7A constitutes the lower end portion 40A of the charging port 40, and is located above the fixed roller 7B, and the maximum diameter roll bale R2 from the center position P1 of the minimum diameter roll bale R1 on which the roll baler 1 can be formed. It is arrange | positioned rather than the center position P2 (refer FIG. 2, FIG. 3). That is, by disposing the fixed roller 7A at such a position, the insertion port 40 can be disposed above the center position P1 of the roll balers R1 and R2 to be formed. Since the charging port 40 is disposed at such a position, the material to be molded is prevented from collapsing due to compression in the direction intersecting the opening direction of the charging port 40 of the first movable roller 6A and the second movable roller 6B as described above. The effect and the effect of preventing the springing phenomenon can be further ensured.

  The belt 8 constitutes the lower side of the upstream half of the molding chamber 4, and is disposed at a position adjacent to the fixed roller 6J from the lower side of the fixed roller 7B. The belt 8 is wound and stretched around three fixed rollers 8A to 8C. The fixed rollers 8A to 8C have their axes parallel to the axes of the fixed rollers 6C to 6K.

  The fixed roller 8A is arranged to be positioned below the input conveyor 3 and downstream of the fixed rollers 7A and 7B. The fixed roller 8B is spaced below the fixed roller 7B, and is disposed at a position where a gap 80 can be secured between the belt 8 and the belt 7. The fixed roller 8C is disposed at a position adjacent to the fixed roller 6J on the downstream side. In the present embodiment, the space between the fixed roller 6J and the fixed roller 8C is the boundary between the upstream half 4B and the downstream half 4A of the molding chamber 4, and opens above the downstream half 4A at this boundary. Thus, the roll bales R1 and R2 formed and wound with the net 10 are discharged.

  That is, according to the belt 8 arranged in this way, when the material to be molded spills out of the molding chamber 4 when the input conveyor 3 inputs the material to be molded from the input port 40, the material to be spilled is spilled. You can catch it. In addition, since the belts 6, 7, and 8 are driven in a direction in which the roll bale is rotated counterclockwise in the molding chamber 4, the molding material on the belt 8 is separated by the belt 8. It is put into the forming chamber 4 through 80 and formed into roll bales R1 and R2 by the rotation of the belts 6, 7 and 8. Therefore, the molding material can be prevented from spilling out of the roll baler 1 or staying in the roll baler 1, so that the molding material can be used effectively without waste.

  Each of the belts 6, 7, and 8 includes at least one of the fixed rollers 6C to 6E and the fixed rollers 6G to 6K, one or more of the fixed rollers 7A and 7B, and any one of the fixed rollers 8A to 8C. One or more belts 6 wound around each of the belts 6 by being driven and rotated by a driving force transmitted from a drive source (not shown) such as a motor via a rotation transmission mechanism (not shown) such as a chain, 7 and 8 are driven to rotate.

  The roll baler 1 is provided with a return device A that returns the molding material spilled from the input conveyor 3 to the hopper 2 side, and enables the input molding material 3 to transport the returned molding material to the molding chamber 4 again. Yes. The return device A is continuously provided on the inclined plate A1 provided in an inclined manner along the return side (lower side) of the input conveyor 3, and on the lower side (hopper 2 side) of the inclined plate A1. The storage part A2 which stores the molding material which slides along the inclination of A1 and the 2nd inclination board A3 arrange | positioned so that it may reach from the upper end part A10 of inclination board A1 to the belt 8 are provided.

  The inclined plate A1 is positioned so that the upper end portion A10 overlaps the end portion on the protruding side of the belt 8, and between the upper end portion A10 and the outside of the belt 7, the input conveyor 3 spills when the material to be molded is charged. A space S for dropping the molding material onto the belt 8 is secured. That is, the molding material spilling from the side near the input port 40 of the input port 40 or the input conveyor 3 is received by the belt 8 through the space S and also input into the molding chamber 4, near the input port 40 of the input conveyor 3. The molding material that spills from the portion other than the side is received by the inclined plate A1 and slides down to the storage portion A2.

  The material of the inclined plate A1 is at least a coefficient of friction that allows the material to be molded to slide down, and preferably has corrosion resistance. For example, non-ferrous metal materials such as stainless steel, rust prevention processing, etc. Examples thereof include applied metal materials and synthetic resin materials. Further, the present invention does not limit the angle of the inclined plate A1 to the angle of the input conveyor 3, the distance between the inclined plate A1 and the input conveyor 3, the position of the inclined plate A1, etc. What is necessary is just the structure which can slide a molding material to storage part A2.

  The storage portion A2 is continuous from the lower side of the inclined plate A1, and is provided so as to surround the upstream end portion 33 of the input conveyor 3 with an arc and close the lower end of the hopper 2. This arc is an arc that is concentric with the inverted portion of the upstream end portion 33 of the input conveyor 3, and the upstream end portion 33 is disposed in the storage portion 3. Such a reservoir A2 secures a space between the upstream end 33 and the tip of the support protrusion 31 of the conveyor belt 30 close to the arc, and the support protrusion 31 when the conveyor belt 30 is reversed. While scooping up the molding material stored in the storage part A2, it can be supported on the conveying surface side of the input conveyor 3.

  The second inclined plate A3 is made of the same material as the inclined plate A1, and the tip on the side of the belt 8 is installed so as to be close to or in contact with the belt 8, and from the conveyor 3 and the insertion port 40 The material to be spilled is guided onto the belt 8.

  According to such a returning device A, the molding material that has slipped off the inclined plate A1 and stored in the storage portion A2 can be input again into the molding chamber 4 by the input conveyor 3 and the belt 8. Therefore, the molding material can be prevented from spilling out of the roll baler 1 or staying in the roll baler 1, so that the molding material can be used effectively without waste.

  According to such a roll baler 1, the phenomenon of the material to be squeezed out from the charging port 40 during molding is suppressed, and the material to be molded that spills from the charging port 40 when being charged or when being charged. In addition, since the belt 8 and the return device A are put into the molding chamber 4, the material to be molded can be used effectively without waste, and a well-shaped and compact roll bale can be formed and an efficient roll bale can be used. Can be formed.

  Next, a second embodiment of the roll baler 1 will be described with reference to FIG. In the present embodiment, the description of the same parts as those in the first embodiment will be omitted by attaching the same reference numerals.

  The roll baler 1 of this embodiment includes a forming chamber 4 in which a belt 8 is wound around a fixed roller 8B and a fixed roller 8C. In other words, the belt 8 is provided with a molding chamber 4 having no portion protruding downstream from the fixed rollers 7A and 7B, and the molding material that spills when it is introduced into the inlet 40 is transferred to the molding chamber 4 by the belt 8. It does not have a function to return. Therefore, in the roll baler 1 of this embodiment, the upper end portion A10 of the inclined plate A1 is extended to the extent that it is close to the outer surface of the belt 7, so that the molding material that spills when being introduced into the inlet 40 is inclined plate A1. In this case, it can be recharged into the molding chamber 4 via the return device A. Therefore, the roll baler of this embodiment can be expected to have the same effect as the roll baler 1 of the first embodiment.

  Next, a third embodiment of the roll baler 1 will be described based on FIGS. 5 and 6. In the present embodiment, the description of the same parts as those in the first embodiment will be omitted by attaching the same reference numerals.

  The roll baler 1 of the present embodiment is an example of a variable roller that moves along the long hole 61 along with the first movable roller 6A and the second movable roller 6B instead of the fixed roller 6K in the first embodiment. A movable roller 6L is provided. The third movable roller 6L is pivotally supported by the movable arm 60, and is pivotally supported outside the second movable roller 6B in the moving direction by a long hole 61 in which the second movable roller 6B is pivotally supported. The third movable roller 6L is arranged on the center line of the gap between the first movable roller 6A and the second movable roller 6B and close to the first movable roller 6A and the second movable roller 6B.

  The first movable roller 6A and the second movable roller 6B are wound with the surface opposite to the molding chamber 4 of the belt 6 in contact with the first movable roller 6A, and the third movable roller 6L is wound around the molding chamber 4 side of the belt 6. When the surface is brought into contact with each other and wound, the depth of the recess 63 formed between the first movable roller 6A and the second movable roller 6B can be reduced. That is, by reducing the depth of the recess 63, the amount of the molding material entering the recess 63 during molding of the roll bales R1 and R2 can be reduced, so that the molding material remaining in the molding chamber 4 remains. The amount can be reduced. The concave portion 63 is provided with a scraper 64 that prevents the molding material from entering the concave portion 63 or scrapes the molding material stuck to the belt 6. Intrusion of the molding material can be suppressed.

  In the present invention, unlike the first to third embodiments described above, the material to be spilled is not provided with a function of again being fed into the molding chamber 4, and the inlet 40 is the center of the roll bales R1 and R2. The roll baler 1 disposed above the positions P1 and P2 is also included. The roll baler 1 can also prevent the phenomenon that the material to be molded does not enter the molding chamber 4, so that the roll bale with a good shape can be tightened. And efficient roll bale can be formed (not shown).

1: Roll baler (variable diameter roll baler)
3: Loading conveyor 4: Molding chamber (roll bale molding chamber)
6: Belt 7: Belt 8: Belt 32: Downstream end 33: Upstream end 40: Input port 40A: Lower end 6A: First movable roller (variable roller)
6B: Second movable roller (variable roller)
6L: Third movable roller (variable roller)
7A: Fixed roller 8A: Fixed roller R1: Roll bale R2: Roll bale 63: Concave portion 64: Scraper

Claims (4)

Comprising a bale forming chamber for compression molding into a roll bale with one or more belts to be molding material, and a feed conveyor for introducing the object to be molded material into the bale forming chamber, the bale forming chamber From the center of the roll bale molding chamber so as to expand the roll bale molding chamber in accordance with the diameter of the roll veil to be formed and the belt is wound and molded. A variable roller whose position is pivotally supported, and the variable roller is pivotally supported so as to face the circumferential direction of the roll bale, and the first movable roller and the second movable roller. A third movable roller pivotally supported on the outer side in the variable direction than the two movable rollers, and the belt is opposite to the roll veil forming chamber with respect to the first movable roller and the second movable roller. The surface of the roll bale forming chamber is brought into contact with and wound around the third movable roller, thereby forming a recess communicating with the roll bale forming chamber. A scraper that suppresses intrusion of the molding material into the recess, and the opening direction of the input port is set so that the opening direction of the input port does not face the variable direction of the variable roller. A variable diameter roll baler provided in   The variable diameter roll baler according to claim 1, wherein the charging port is provided above a center position of the maximum diameter of the roll bale to be molded. Wherein the lower flow end of the feed conveyor, the variable diameter roll baler according to claim 1 or 2, characterized in that arranged so as to overlap in the vertical direction and the lower end of the inlet. A variable diameter roll baler provided with a roll bale forming chamber having a plurality of belts, wherein the rollers on the input conveyor side of the belt arranged in the lower part of the roll bale forming chamber constitute the roll bale forming chamber. The variable diameter roll baler according to any one of claims 2 and 3, wherein the variable diameter roll baler is provided so as to be positioned closer to the charging conveyor than a belt roller.

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