JP5462054B2 - Roll baler - Google Patents

Description

  The present invention relates to a roll baler provided with a delivery device for delivering a packing material for packing a roll bale to a molding chamber.

  A roll baler equipped with a sending device that sends out packing materials (net, twain) for packing roll bales is used to pull out the packing materials in a state where tension is applied to the packing materials by applying a braking force to the sending operation of the packing materials. This is known. The thing of the following patent document 1 is equipped with the brake device which brakes rotation of the net axis | shaft which supports packing material, so that the braking force to the net axis | shaft of a brake device may be weakened at the beginning of sending out packing material. It is a thing.

JP 2004-201564 A

  According to the roll baler described in Patent Document 1, since the braking force to the net shaft of the brake device is weakened at the beginning of the delivery of the packaging material, a roller or the like that pulls out the packaging material in a state where tension is applied to the packaging material. Idling can be suppressed, and stable packing materials can be sent out.

  However, the brake device described in Patent Document 1 adjusts the braking force by increasing or decreasing the contact pressure of the brake shoe that contacts and brakes the brake drum provided on the net shaft. There is a problem that the target braking force cannot be generated when the brake shoe is worn or damaged. In addition, since the desired braking force is maintained, various maintenances such as contact pressure adjustment, brake shoe replacement, and periodic inspection of brake shoe wear and damage are required. There is a problem in that the running cost increases.

  This invention makes it an example of a subject to cope with such a problem. In other words, without using a brake device, while reducing the running cost, stabilizing the delivery operation of the packaging material, improving the winding accuracy of the packaging material on the roll bale, and withdrawing at the beginning of the delivery of the packaging material By pulling down the tension of the packing material, it is possible to pull out the stable packing material, and by applying tension to the packing material that is pulled out when the packing material is rolled around the roll bale, it is possible to send out the stable packing material to the molding room. It is an object of the present invention to reliably perform the winding of the packing material around the roll bale.

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

  Forming a cylindrical roll bale by compressing a material to be molded, discharging a molding chamber, a feeding device for pulling out the packing material for packing the roll bale and sending it to the molding chamber, and the packing material pulled out A tension adjusting unit that strengthens and reduces the tension of the feeding device, and the feeding device pulls out the packing material that is detachably held in the holding unit and sends it to the molding chamber, and the sending unit A feed drive unit that drives the feed drive unit in a direction in which the feed drive unit is driven, a feed drive transmission unit that transmits / drives the drive transmission to the feed unit, and the holding unit and the feed unit. A plurality of tension rollers disposed between the holding unit and the delivery unit and supported so as to apply tension to the packing material, and the tension adjusting unit includes: A movable adjustment unit which is in contact with the packaging material to be ejected and supported so as to be movable in a direction in which tension is applied to the packaging material and in a direction in which the tension of the packaging material is relaxed; the delivery drive transmission unit; A tension adjustment drive unit that drives the adjustment unit in a direction to operate; and a tension adjustment drive transmission unit that transmits the drive of the tension adjustment drive unit to the delivery drive transmission unit and the movable adjustment unit. A portion is provided so as to operate in a direction to loosen the packaging material in accordance with a drive transmission input operation of the delivery drive transmission portion, and tension is applied to the packaging material in accordance with a drive transmission cutting operation of the delivery drive transmission portion. It is provided so that it may operate in the direction which gives, and when the tension | tensile_strength of the said packaging material is loosened, the said sending part performs the delivery operation | movement of the said packaging material, It is characterized by the above-mentioned.

  By having such characteristics, the present invention has the following effects. That is, the movable adjustment unit is provided so as to operate in the direction of loosening the tension of the packing material in accordance with the driving transmission input operation of the sending drive transmission unit, and the packing material is supplied in accordance with the driving transmission cutting operation of the sending drive transmission unit. It is provided to operate in the direction to give tension, and when the tension of the packing material is relaxed, the sending part performs the sending operation of the packing material, that is, without using the brake device and running In addition to reducing the cost, the delivery operation of the packaging material can be stabilized and the winding accuracy of the packaging material around the roll bale can be increased. Specifically, the tension of the packing material pulled out at the beginning of the delivery of the packing material can be pulled out stably, and the packing material pulled out when the packing material is rolled around the roll bale is tensioned. Thus, it is possible to reliably feed the packing material to the molding chamber and wind the packing material around the roll bale.

The schematic block diagram which shows an example of the roll baler which concerns on this invention. The partial notch schematic sectional drawing which shows the structure of a delivery apparatus and a tension adjustment part. The schematic block diagram which shows the structure of a sending apparatus and a tension adjustment part. FIG. 3 is a partially cutaway perspective view showing configurations of a delivery device and a tension adjusting unit. The operation | movement diagram of the delivery apparatus which shows the state which loosened the packaging material, and a tension adjustment part. The operation | movement figure of the sending apparatus which shows the state which sends out packing material, and a tension adjustment part. The operation | movement diagram of the delivery apparatus and tension | tensile_strength adjustment part which show the state by which the packing material is wound by the roll bale. The flowchart of the program which implements control of a control part.

  The roll baler of the present invention drops this molding material from a hopper or the like that stores the molding material, supplies the dropped molding material to a molding chamber by a conveyor or the like, forms a roll bale, and directly after the molding Roll baler to be discharged into the roll, a composite roll baler having a lap device for wrapping the roll bale discharged from the molding chamber continuously from the forming chamber of the roll baler to the roll bale discharging side, and a pickup device for picking up a molding material such as a field It can be applied to various roll balers such as a roll baler that feeds the picked material to be picked up to a forming chamber by a conveyor or the like to form a roll bale and discharges it directly to a field after forming.

  In addition, the molding material of the present invention includes various materials used for livestock feed such as feed crops such as corn and grass, food residues after food processing, fertilizers such as rice husk, wheat husk, wood chips, sawdust, litter, and livestock excrement Various materials used in

  Moreover, the packing material of this invention contains the various materials for packing a roll bale in a molding chamber, such as a net | network and twain.

  In addition, an operation position detection unit that detects a position where the packing material is loosened and a position where tension is applied to the packing material and outputs a respective position signal of the movable adjustment unit, and tension adjustment drive based on the position signal A control unit that controls driving of the unit, and the control unit controls the tension adjustment driving unit when the position of the movable adjustment unit is a position where the packaging material is loosened. When the position of the movable adjustment unit operated by the control is a position to apply tension to the packing material, the drive of the tension adjustment drive unit is stopped. And performing control.

  The operation position detection unit includes a detected part provided with a variable position in accordance with the operation of the part, and a detection part that detects the detection part, in a part that operates by driving the tension adjustment driving unit. The detection unit includes a position of the detected unit when the position of the movable adjustment unit is a position where the packing material is loosened, and a position where the position of the movable adjustment unit is a position where tension is applied to the packing material. It is provided so as to detect the position of the detected portion.

  Hereinafter, embodiments of a roll baler according to the present invention will be described with reference to the drawings. In this embodiment, the roll baler is exemplified as a composite roll baler. In addition, this embodiment does not limit this invention.

  FIG. 1 is a configuration diagram of the roll baler 1. The roll baler 1 includes a forming chamber 2 for forming a cylindrical roll bale A by compressing a material to be formed (not shown) cut into pieces, and the roll bale A formed in the forming chamber 2 in the forming chamber 2. A delivery device 3 for delivering the packaging material B to be packaged, a tension adjusting unit 4 for adjusting the tension of the delivered packaging material B, and a wrap machine 5 for wrapping the formed roll bale A with a wrap film (not shown). A hopper 6 for storing the molding material, a transporting conveyor 7 for transporting the molding material supplied from the hopper 6 into the molding chamber 2, and a conveyor for transporting the roll bale A from the molding chamber 2 to the lap machine 5. 8 and a transport unit 9 for transporting the molding material spilling from the transport conveyor 7 over the lap machine 5 to the transport conveyor 7 side.

  The molding chamber 2 includes a fixed-side half 20 that is partitioned on the delivery device 3 side, a movable-side half 21 that is partitioned on the lap machine 5 side, and a fixed-side half 20 and a movable-side half 21. And a molding apparatus 22 arranged. The stationary half 20 has an insertion port 23 through which the molding material conveyed from the conveyor 7 is introduced into the molding chamber 2 and an insertion port 24 through which the packaging material B to be delivered is inserted into the molding chamber 2. Is formed.

  In such a molding chamber 2, the material to be molded that has been input into the molding chamber 2 from the transport conveyor 7 through the input port 23 is compressed while being rotated by the molding device 22 to be formed into a cylindrical roll bale A. It has become. Further, after the forming of the roll bale A, the packaging material B to be sent to the forming chamber 2 was formed by being wound around the roll bale A while being drawn by the rotating bale A by the forming device 22. The roll bale A is packed.

  Further, after the packing of the roll bale A is completed, the roll bale A is discharged by opening the movable half 21 and opening the fixed side half 20, and the discharged roll bale A is transported. It is conveyed to the lap machine 5 by the conveyor 8. The molding material spilled during the conveyance of the roll bale A is transported to the upstream side of the transporting conveyor 7 by the transporting unit 9, scooped up by the transporting conveyor 7, and again put into the molding chamber 2. ing. The lap machine 5 winds and wraps a wrap film (not shown) around the conveyed roll bale A, and discharges the roll bale A to the outside of the roll baler 1 after wrapping.

  2-7 is a schematic block diagram which shows the structure of the delivery apparatus 3 and the tension adjustment part 4. FIG. The sending device 3 sends the receiving unit 30 as an example of a holding unit that rotatably holds the roll B1 of the packing material B, the sending unit 31 that pulls the packing material B and sends it to the molding chamber 2, and sends the sending unit 31. The sending drive unit 32 that drives in the operating direction, the drive of the sending drive unit 32 is transmitted to the sending unit 31, the sending drive transmission unit 33 that inputs / disconnects this drive transmission, and the receiving unit 30 and the sending unit 31. A plurality of tension rollers 34, 35, and 36 that are disposed between and supported so as to wrap the packaging material B across the receiving unit 30 and the delivery unit 31 and apply tension to the packaging material B are provided. . In addition, the above-mentioned holding | maintenance part is not restricted to the receiving part 30, What is necessary is just a form which can hold | maintain the roll B1 of the packaging material B rotatably, For example, the support shaft which supports roll B1 rotatably is mentioned (FIG. Not shown).

  The tension adjusting unit 4 is in contact with the packaging material B located between the tension rollers 34 and 35 and is supported so as to be movable in a direction in which the tension is applied to the packaging material B and a direction in which the tension of the packaging material B is relaxed. The movable adjustment unit 40, the tension adjustment drive unit 41 that drives in the direction in which the delivery drive transmission unit 33 and the movable adjustment unit 40 are operated, and the transmission drive transmission unit 33 and the movable adjustment unit 40 that drive the tension adjustment drive unit 41. Detects whether the position of the tension adjustment drive transmission unit 42 that transmits to the position of the movable adjustment unit 40 and the position where the tension is applied to the packaging material B or the position where the tension of the packaging material B is relaxed, and outputs respective position signals. And a control unit 44 that controls the driving direction of the tension adjustment driving unit 41 based on the position signal.

  The receiving unit 30 is configured to detachably receive the roll B1 of the packing material B, and the received roll B1 is rotated by the tensile force of the packing support B that is pulled out by the sending operation of the sending unit 31. It is supposed to be.

  The delivery unit 31 includes a driving roller 3A covered with a rubber material or a synthetic resin material, and a driven roller 3B that sandwiches the packing material with the driving roller 3A. The drive roller 3 </ b> A is driven to rotate by driving the delivery drive unit 32 that is transmitted through the delivery drive transmission unit 33. The driven roller 3B is supported so as to come into contact with the driving roller 3A, and is rotated by the driving rotation of the driving roller 3A.

  As the delivery drive unit 32, a molding drive roller constituting a part of the molding chamber 2 is used. This molding drive roller is for rotating the roll bale A in the molding chamber 2 and rotates until the roll bale A is molded and the packaging material B is wound. In addition, this delivery drive part 32 is not restricted to the structure used as the above-mentioned shaping | molding drive roller, You may utilize the motor etc. which were provided independently.

  The delivery drive transmission unit 33 includes a pulley 3C supported so as to rotate integrally with the drive roller 3A, a pulley 3D supported so as to rotate integrally with the delivery drive unit 32, and the pulleys 3C, 3D. And a clutch roller 3F which is in contact with the belt 3E and supported so as to be movable in a direction in which the contact pressure is increased or decreased.

  The belt 3E has a tension that can transmit the rotation of the pulley 3C to the pulley 3D driven by the delivery drive unit 32 and the rotation of the pulley 3C by the drive of the delivery drive unit 32 depending on the contact pressure of the clutch roller 3F. It is wound around 3D so as to have a tension that is not transmitted.

  The clutch roller 3F rotates coaxially with the rotating shaft 3G independently of the rotation of the rotating shaft 3G on the rotating shaft 3G supported so as to rotate integrally with the driving roller 3A and the pulley 3D. Thus, it is rotatably supported at the tip of the support 3H that is supported in a projecting manner in the radial direction. The clutch roller 3F moves in a direction to increase the contact pressure to the belt 3E with the rotation of the support 3H in one direction (counterclockwise in the drawing) by the one-way drive transmission of the tension adjustment drive transmission unit 42. Thus, the tension of the belt 3E is set to a tension that can transmit the rotation of the pulley 3C to the pulley 3D by driving the delivery driving unit 32 (see FIG. 5). Further, as the support 3H rotates in the other direction (clockwise in the drawing) by the drive transmission in the other direction of the tension adjustment drive transmission unit 42, the belt 3E moves in a direction to weaken the contact pressure on the belt 3E. The tension of the pulley 3C driven by the delivery drive unit 32 is set to a tension that makes the pulley 3D non-transmitting to the pulley 3D (see FIG. 7). The support 3H is not limited to the form coaxial with the rotary shaft 3G, but is supported so as to move the clutch roller 3F in a direction in which the tension of the belt 3E is increased or decreased by the drive transmission of the tension adjustment drive transmission unit 42. Any form may be used (not shown).

  The tension rollers 34, 35, and 36 are arranged so as to alternately wind the packaging material B including the movable adjustment unit 40 in the pulling direction, and rotate in a direction to guide the wrapped packing material B in the pulling direction. It is supported freely. On the peripheral surface of the tension roller 34 supported on the most downstream side in the pull-out direction, a spiral body 38 is provided that applies a force in a direction in which the wrapped packaging material B is expanded outward in the axial direction of the tension roller 34. By this spiral body 38, the packing material B is guided in a state of being stretched in the width direction, and the packing material B can be prevented from being wrinkled or bent.

  The movable adjusting unit 40 is coaxial with the tension roller 34 and is provided so as to rotate independently of the rotation of the tension roller 34, and a support projecting radially on the rotation shaft 4A. 4B and a movable roller 4C rotatably supported at the tip of the support 4B. The movable roller 4C winds the packing material B between the tension rollers 34 and 35 to rotate the rotating shaft 4A. As the support 4B rotates, the packing material B moves in the direction of increasing or relaxing the tension. The rotary shaft 4A is not limited to the form of being coaxial with the tension roller 34, and the tension of the packing material can be increased or decreased via the support 4B by the drive transmission of the tension adjustment drive transmission unit 42. Any form may be used as long as it is supported so as to be moved in the direction of movement (not shown).

  Specifically, the movable adjustment unit 40 adjusts the tension of the packaging material B wound by the movable roller 4C so as to synchronize with the rotation of the clutch roller 3F of the support 3H in the direction of increasing the contact pressure to the belt 3E. It moves in the loosening direction (clockwise on the drawing) (see FIG. 5). In addition, the tension of the packing material B wound by the movable roller 4C is increased (counterclockwise in the drawing) so that the clutch roller 3F of the support 3H is synchronized with the rotation in the direction of decreasing the contact pressure to the belt 3E. (Refer to FIG. 7).

  The tension adjustment drive unit 41 is a motor that is driven to rotate by hydraulic pressure or the like, and the tension adjustment drive rotation of the tension adjustment drive unit 41 is adjusted via a drive transmission unit 400 including a chain mechanism (or a belt mechanism, a gear train, etc.). The sprocket 4D is supported on the tension adjusting drive 41 side, the sprocket 4E supported on the tension adjusting drive transmitting unit 42, and the sprockets 4D and 4E. Chain 4F.

  The tension adjustment drive transmission unit 42 has a gear train structure composed of four gears. The tension adjustment drive transmission unit 42 includes a first gear 4G that is supported so as to rotate integrally with the sprocket 4E, a second gear 4H that is supported so as to mesh with the first gear 4G, and the second gear 4H. The third gear 4I is supported coaxially and integrally rotated, and the fourth gear 4J is supported so as to rotate integrally with the rotation shaft 4A so as to mesh with the third gear 4I.

  The fourth gear 4J also transmits the rotation of the tension adjustment drive unit 41 to the support 3H. Specifically, the fourth gear 4J protrudes on the extension line of the support 3H and in the opposite direction so as to rotate independently of the rotation of the rotation shaft 3G and coaxially with the rotation shaft 3G. The support 3I is supported via a tension spring 3J. The support body 3I and the support body 3H are coupled so as to rotate integrally. The form for transmitting the rotation of the fourth gear 4J as the rotation of the support 3I is not limited to the form connected by the tension spring 3J, but the form in which the support 3I can be rotated by the rotation of the fourth gear 4J. For example, a form connected by a rod, a form in which a gear train is interposed between the fourth gear 4J and the support 3I, and the like can be given (not shown).

  That is, when the fourth gear 4J is rotated in the clockwise direction in the drawing when the one-way driving rotation of the tension adjusting drive portion 41 is transmitted, the support 3I is pulled via the extending tension spring 3J to counterclockwise. While rotating in the direction, the rotating shaft 4A is rotated in the clockwise direction. At this time, the support 3H rotates integrally with the rotation of the support 3I, so that the clutch roller 3F moves in the direction of increasing the tension of the belt 3E, while the rotation shaft 4A rotates in the clockwise direction to move. The roller 4C is moved in a direction to loosen the tension of the packing material B (see FIG. 5).

  In addition, when the fourth gear 4J is rotated in the counterclockwise direction in the drawing when the driving rotation in the other direction of the tension adjusting drive unit 41 is transmitted, the support 3I is pushed while the tension spring 3J in the expanded state is contracted. While rotating clockwise, the rotary shaft 4A is rotated clockwise. At this time, the support 3H rotates integrally with the rotation of the support 3I, so that the clutch roller 3F moves in a direction to weaken the tension of the belt 3E, while the rotating shaft 4A rotates in the clockwise direction to move. The roller 4C moves in a direction to increase the tension of the packing material B (see FIG. 7).

  The operating position detector 43 is a support frame F1 (see FIG. 3) provided on the detected part 4K fixed to the second gear 4H and the frame F (see FIG. 3) that supports the tension rollers 34, 35, 36, and the like. ) Are fixed to the detectors 4L and 4M.

  As the second gear 4H rotates, the position of the detected portion 4K moves to the left and right in the drawing, and the movable roller 4C is in a position to increase the tension of the packaging material B (FIG. 2, In the state (refer to FIG. 7), it is located on the right side (molding chamber 2 side) in the drawing and the movable roller 4C is in a position where the tension of the packing material B is relaxed (see FIG. 5 and FIG. 6). 37 side). The movement distance of the detected part 4K is the same distance as the rotation distance of the half circumference of the second gear 4H, and moves in the upper half in the drawing.

  The rotation distance of the second gear 4H for half a circle is a rotation distance for moving the rotation distance of the fourth gear 4J in a range in which the contact pressure on the belt E is changed from the strongest to the weakest. This is the distance by which the roller 4C is moved in the range where the tension of the packing material B is relaxed from the strongest state.

  The detection unit 4L is provided so as to face the detected part 4K located on the right side, and the detection unit 4M is provided so as to face the detected part 4K located on the left side. That is, the detection unit 4L detects that the movable roller 4C is in a position where the tension of the packaging material B is increased, and the detection unit 4M detects that the movable roller 4C is in a position where the tension of the packaging material B is relaxed. It has become. The detection units 4L and 4M are connected to the control unit 44 and output position signals detected by the detection units 4L and 4M to the control unit 44, respectively.

  The control unit 44 is connected to the tension adjustment driving unit 41 and controls to switch the driving direction of the tension adjustment driving unit 41 based on the position signal. Further, the control unit 44 detects that the roll bale A molded in the molding chamber 2 has reached a predetermined diameter, and outputs a predetermined diameter signal, and the roll bale A of the packaging material B. And a predetermined winding amount detection unit 46 for detecting a predetermined winding amount and outputting a predetermined winding amount signal, and the delivery device 3 and the tension adjusting unit 4 are packaged on the basis of the predetermined diameter signal. Cutting to control the delivery conveyor 7 to stop and to set the delivery device 3 and the tension adjusting unit 4 to the non-sending state of the packing material and to cut the packing material B based on the predetermined winding amount signal. Control for cutting the section 47 is performed. Further, the control unit 44 is connected to a cutting operation detection unit 48 that detects the end of cutting and outputs a cutting end signal, and controls to open the molding chamber 2 and discharge the roll bale A based on the cutting end signal. It is supposed to do.

  The operation position detecting unit 43 and the control unit 44 can detect the operation position of the movable roller 4C, move the movable roller 4C in the direction of loosening the tension of the packing material B, and pack the movable roller 4C. An operation of stopping the tension of the material B, an operation of moving the movable roller 4C from this position in a direction of increasing the tension of the packing material B, and an operation of stopping the movable roller 4C at a position of increasing the tension of the packing material B are performed. be able to.

  In addition, the site | part which provides the to-be-detected part 4K is not restricted to the 2nd gear 4H illustrated, What is necessary is just a site | part which operate | moves by the drive of the tension adjustment drive part 41. For example, the first gear 4G, the third gear 4I, the fourth gear 4J, the support 4B, and the like can be cited, and the detection unit 4L faces the moving position of the detection unit 4K provided in any of these parts. 4M may be arranged. In addition, the operation position detection unit 43 of the present embodiment has a so-called proximity switch structure, but the operation position detection unit 43 of the present invention may be an angle sensor, a limit switch, or the like, and the movable adjustment unit 40. As long as the operation position can be detected (not shown).

  The predetermined diameter detection unit 45 only needs to be able to detect that the roll bail A has reached the predetermined diameter. For example, the predetermined diameter detection unit 45 detects the contact pressure of the roll bale A with respect to the inside of the molding chamber 2 and detects the predetermined contact pressure. In some cases, it is possible to output the above-mentioned predetermined diameter signal, assuming that the roll bail A reaches a predetermined diameter. The predetermined winding amount detection unit 46 only needs to be able to detect that the winding amount of the packaging material B with respect to the roll bail A has reached the predetermined winding amount. For example, the predetermined winding amount detection unit 46 is based on the number of rotations of the roll B1. An example is one in which the above-mentioned predetermined winding amount signal is output when the predetermined amount of winding is reached when the amount of B extracted is detected and the predetermined amount of pulling is detected.

  Next, operations of the delivery device 3 and the tension adjusting unit 4 and a specific control method of the control unit 44 that controls these operations will be described. 2 and 5 to 7 are operation diagrams showing the operation of the delivery device 3 and the tension adjusting unit 4. FIG. 8 is a flowchart of a program for controlling the control unit 44 that controls the operations of the delivery device 3 and the tension adjusting unit 4. This program is a program that is started when the roll baler 1 is operated (step S1).

  When the roll baler 1 is actuated, the supply operation for the material conveyor 7 to supply the molding material to the molding chamber 2 and the molding operation of the molding chamber 2 are started (step S2). At this time, rotation of the delivery drive unit 32 is started, but the position of the clutch roller 3F is a position where the contact pressure with respect to the belt E is in the weakest state, and the drive rotation of the delivery drive unit 32 is transmitted to the rotation shaft 3G. It is in a disconnected state (see FIG. 2). On the other hand, the position of the movable roller 4C is a position where tension is applied to the packaging material B (see FIG. 2).

  When it is detected that the roll bail A has reached a predetermined diameter (step S3), the tension adjustment drive unit 41 starts to be driven in the pulling direction of the packing material B (step S4), and the tension adjustment drive accompanying this drive is performed. The rotation of the fourth gear 4J, which is the transmission operation of the transmission unit 42, moves the clutch roller 3F to a position where the contact pressure with respect to the belt 3E is the strongest, and the drive rotation of the delivery drive unit 32 inputs the transmission to the rotary shaft 3G. At the same time, the position of the movable roller 4C moves to a position where the tension of the packing material B is relaxed (see FIG. 5). At this time, when the detection unit 4M detects the detected unit 4K that moves due to the rotation of the second gear 4H that is the transmission operation of the tension adjustment drive transmission unit 42 accompanying the driving of the tension adjustment drive unit 41 (step S5), the position A signal is output (step S6). Based on this position signal, the drive of the tension adjustment drive transmission unit 42 is stopped (step S7).

  When the movable roller 4C reaches the position where the tension of the packing material B is relaxed by the above-described step S3 to step S7, the packing material B is in a relaxed state as shown in FIG. Thus, the resistance when the sending unit 31 pulls out the packing material B can be reduced, and the packing material B can be pulled out smoothly and sent to the molding chamber 2 (see FIG. 6).

  When the drive of the tension adjustment drive transmission unit 42 stops, the tension adjustment drive unit 41 starts to be driven in the direction opposite to the drive direction of step S4 (step S8). The rotation of the fourth gear 4J, which is the transmission operation of the tension adjustment drive transmission unit 42 accompanying this drive, moves the clutch roller 3F to a position where the contact pressure on the belt 3E is the weakest, and the drive rotation of the delivery drive unit 32 The transmission to the rotating shaft 3G is cut off, and at the same time, the position of the movable roller 4C moves to a position where the tension of the packaging material B is increased (see FIG. 7). At this time, when the detection unit 4L detects the detected portion 4K that moves due to the rotation of the second gear 4H, which is the transmission operation of the tension adjustment drive transmission unit 42 accompanying the drive of the tension adjustment drive unit 41 (step S9), the position is detected. A signal is output (step S10). Based on this position signal, the drive of the tension adjustment drive transmission unit 42 is stopped (step S11).

  When the movable roller 4C reaches a position where tension is applied to the packaging material B by the above-described steps S8 to S11, the roll bail A that rotates in the molding chamber 2 while the packaging material B maintains tension. And is wound around the roll bale A (see FIG. 7).

  When it is detected that the winding amount of the packaging material B has reached a predetermined amount (step S12), the cutting unit 47 performs a cutting operation to cut the packaging material B (step S13). When the end of cutting is detected (step S14), a cutting end signal is output (step S15). Based on this cutting end signal, the movable side half 21 is opened and the fixed side half 20 is opened. Bale A is discharged (step S16).

  According to the roll baler 1 of the present embodiment, simultaneously with the movement of the clutch roller 3F to the drive transmission input state, the movable roller 4C is moved to a position where the tension of the packaging material B is relaxed, so that the tension of the packaging material B is relaxed. Therefore, the packaging material can be pulled out in a state where the resistance of the packaging material B at the beginning of the delivery of the packaging material B is reduced, and the packaging material B can be sent out and wound around the roll bale A stably. Further, since the movement of the clutch roller 3F to the drive transmission input state and the movement of the movable roller 4C to the position where the tension of the packing material B is relaxed are synchronized, the operation of pulling out the packing material B in a relaxed state is ensured. It can be carried out.

  Further, the operation of moving the movable roller 4C in the direction of loosening the tension of the packing material B, the operation of stopping the movable roller 4C at the position where the tension of the packing material B is loosened, and the tension of the packing material B from the position of the movable roller 4C is increased. Since the operation of moving the movable roller 4C and the operation of stopping the movable roller 4C at the position where the tension of the packing material B is increased are controlled by the position detection of the movable roller 4C by the operation position detection unit 43, each operation is surely performed. Can do.

  Further, the operation position detection unit 43 detects the movement position of the detected portion 4K fixed to the second gear 4H that is rotated by the drive of the tension adjustment drive unit 41 by the detection units 4L and 4M fixed to the fixed positions. Since the configuration is adopted, it is possible to always detect the detected portion 4K at the same position. Therefore, the operation of stopping the movable roller 4C at a position where the tension of the packing material B is relaxed and the operation of stopping the movable roller 4C at a position where the tension of the packing material B is increased can be performed without error.

  It should be noted that the present invention is not limited to the illustrated embodiments, and can be implemented with configurations within a range that does not deviate from the contents described in the respective claims.

1: Roll baler 2: Molding chamber A: Roll bale B: Packing material 3: Delivery device 4: Tension adjusting unit 30: Receiving unit (holding unit) 31: Delivery unit 32: Delivery drive unit 33: Delivery drive transmission unit 34: Tension Roller 35: Tension roller 36: Tension roller 40: Movable adjustment unit 41: Tension adjustment drive unit 42: Tension adjustment drive transmission unit 43: Operation position detection unit 44: Control unit 4K: Detected unit 4L: Detection unit 4M: Detection unit 4H: Second gear

Claims (3)

  The molding material is compressed to form a cylindrical roll bale, the forming chamber to be discharged, a delivery device for pulling out the packing material for packing the roll bale and sending it to the molding chamber, and the packing material to be drawn out A tension adjusting section for increasing and decreasing the tension, and the feeding device pulls out the packing material held in the holding section so as to be pulled out and feeds it to the molding chamber; and in a direction for operating the feeding section. A drive driving unit for driving, a drive for transmitting the driving drive unit to the sending unit, a drive driving transmitting unit for inputting / disconnecting the drive transmission, and the holding unit and the sending unit; A plurality of tension rollers supported so as to wrap the packing material across the holding unit and the delivery unit and apply tension to the packing material, and the tension adjusting unit is pulled out of the packing A movable adjustment unit that is in contact with the material and supported so as to be movable in a direction in which tension is applied to the packaging material and a direction in which the tension of the packaging material is relaxed, and the delivery drive transmission unit and the movable adjustment unit are operated. A tension adjustment drive unit that drives in the direction, and a tension adjustment drive transmission unit that transmits the drive of the tension adjustment drive unit to the delivery drive transmission unit and the movable adjustment unit. Along with the drive transmission input operation of the drive transmission section, it is provided to operate in the direction of loosening the packaging material, and in the direction of applying tension to the packaging material with the drive transmission cutting operation of the delivery drive transmission section The roll baler is characterized in that when the tension of the packaging material is relaxed, the delivery section performs the delivery operation of the packaging material.   An operation position detection unit that detects a position at which the packing material is loosened and a position at which tension is applied to the packing material and outputs a respective position signal; and a tension adjustment drive unit based on the position signal. A control unit that controls driving, and when the position of the movable adjustment unit is a position that loosens the packing material, the control unit tensions the tension adjustment driving unit to the packing material. And a control for stopping the driving of the tension adjustment drive unit when the position of the movable adjustment unit operated by the control is a position for applying tension to the packing material. The roll baler according to claim 1, wherein:   The operation position detection unit includes a detected part provided with a variable position in accordance with the operation of the part, and a detection part that detects the detection part, in a part that operates by driving the tension adjustment driving unit. The detection unit includes a position of the detected unit when the position of the movable adjustment unit is a position where the packing material is loosened, and a position where the position of the movable adjustment unit is a position where tension is applied to the packing material. The roll baler according to claim 2, wherein the roll baler is provided so as to detect a position of the detected portion.

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