JP2008280159A - Paperboard supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paperboard supply device for stably supporting and carrying a various shapes of paperboards and stacking the paperboards in a stacking area in a neatly aligned state. <P>SOLUTION: A plurality of belt carrying mechanisms 11a-11d are provided in parallel to a machine frame 12 for supporting the paperboards 7 such as corrugated cardboards. The belt carrying mechanisms are movable in the cross directions so as to be space-adjustable. Each belt carrying mechanisms is formed expandable with a movable beam 22 elongated frontward from the tip of a fixed beam 21. A rear end side turn roller 24 is supported at the rear end of the fixed beam and a front end side turn roller 28 is supported at the tip of the movable beam. An endless band shaped carrying belt 30 is set between the rear end side turn roller and the front end side turn roller so that the length of the carrying face of each belt carrying mechanism can be adjusted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paperboard supply device for supplying paperboards such as corrugated cardboard and cardboard to a printing machine, boxing machine, etc. in an orderly manner.

The paperboard such as corrugated cardboard cut into a predetermined shape by the die cutter is then conveyed in a wrapped state on a belt conveyor to be supplied to a printing machine, box making machine or the like. The following Patent Documents 1 to 4 show a conventional paperboard supply device for that purpose, and a plurality of endless belt-like conveyor belts supported by the paperboard are provided in parallel. In the apparatus, the interval between the conveyor belts and the length of the conveyor surface are constant and cannot be adjusted.
JP 50-48664 A Japanese Patent Publication No.52-27898 JP 54-149176 A Japanese Utility Model Publication No. 61-15940

  By the way, as illustrated in FIG. 1, the planar shape of today's paperboards cut by the die cutter varies depending on the shape of the paper box, the assembly structure, and the like. For example, in the illustrated paperboard 7, there are four sides of the paper box. Four rectangular portions A1 to A4 are provided in a lateral direction through folds, and flaps B1 to B4 that serve as the bottom of the box and flaps C1, C2, and C4 that serve as the box lids are folds on both sides of each square portion. It is extended through. As described above, the leading edge and the trailing edge of the paperboard 7 in the conveying direction are uneven due to the shape of the flap, so that when the paperboard is conveyed by the conventional paperboard feeder, the paperboard is shifted obliquely. There was a problem that it was easy and could not be stacked well in alignment.

The present invention intends to provide a paperboard supply apparatus having a new structure that solves such problems. For this purpose, the paperboard supply apparatus according to claim 1 is provided with a plurality of belt transport mechanisms for supporting paperboards such as corrugated paper in parallel to the machine frame, and each belt transport mechanism is provided to be movable in the width direction. The distance between the belt conveying mechanisms can be adjusted, and each belt conveying mechanism is formed so that it can be expanded and contracted by extending the movable beam forward from the front end of the fixed beam. The end turn roller is supported, the front end turn roller is supported at the front end of the movable beam, and an endless belt-like transport belt is stretched between the rear end turn roller and the front end turn roller. The length of the transport surface of the transport mechanism can be adjusted.
According to a second aspect of the present invention, in the paperboard supply apparatus, the lower return side of the conveying belt is connected to a guide roller provided substantially below the middle portion of the fixed beam and a guide roller provided below the rear end portion of the movable beam. Is wound in an S-shape so that the conveyor belt always returns without slack.
The invention according to claim 3 is characterized in that, in the paperboard supply apparatus, an extrusion plate is provided at the front end of the movable beam so as to appear and disappear in the traveling direction by the operation of the actuator.
According to a fourth aspect of the present invention, in the paperboard supply apparatus, an auxiliary roller is provided at the front end of the movable beam, and the paperboard separated from the transport surface of the transport belt is temporarily placed on the auxiliary roller. It is characterized by falling on the stacking area.

According to the first aspect of the present invention, the distance between the belt conveying mechanisms and the length of the conveying surface of each belt conveying mechanism can be adjusted in accordance with the shape of the paperboards, and the paperboards can be adjusted by each belt conveying mechanism. While being supported stably, the paperboards can be stacked in an aligned state without being inclined on the stacking area. For this reason, paperboards of various shapes can be transported without problems and can be properly stacked.
In the invention according to claim 2, even if the length of the transport surface of the belt transport mechanism is adjusted by extending the movable beam forward, the transport belt is not slackened, and the tension state in which the transport belt is always required To be kept.
In the invention according to claim 3 and claim 4, the stacked state of the paperboards in the stacking area is more evenly arranged.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a side view of the apparatus, and FIG. 3 is a plan view thereof. A machine base 2 comprising a pair of parallel side plates 2a, 2b is provided on the rail 1, and bearings 3a, 3b are provided at the upper end of the machine base 2, and a plurality of rollers 4 are fixed at appropriate intervals by the bearings. The rotating shaft 5 is rotatably supported. Reference numeral 6 denotes a front plate of the machine base 2, which is a sliding board fixed obliquely at the front side of the roller 4, and a paperboard 7 such as corrugated cardboard cut into a shape as shown in FIG. 1 is placed on the roller 4. Thus, the board is moved forward and slid down on the sliding board, so that the board is placed on the plurality of belt conveying mechanisms 11a to 11d of the board feeding apparatus 10 according to the present invention. Reference numeral 8 denotes a contact plate provided on a side of the sliding plate 6 so as to align the paperboard 7 placed on the belt conveying mechanisms 11a to 11d so as not to be displaced in the width direction.

  The paperboard supply device 10 is provided with four belt transport mechanisms 11a to 11d in a machine frame 12 that are parallel and movable in the width direction so that the interval between the belt transport mechanisms can be adjusted. As shown in FIG. 4, the machine frame 12 is formed by horizontally laying beam members 13 c to 13 f between the side plates 13 a and 13 b, and one end of each side plate 13 a and 13 b is provided on the machine base 2. The bearing 14a and 14b are hinged, and a fluid pressure cylinder 15 is provided in the machine base 2, and a piston rod of the fluid pressure cylinder 15 is connected to the width direction beam member 13d, and the machine frame 12 is supported by the fluid pressure cylinder. Thus, when the fluid pressure cylinder is operated, the machine frame 12 is configured to swing up and down around the bearings 14a and 14b. In addition, roller conveyors 16 a and 16 b are fixed to both outer side surfaces of the machine casing 12.

  Since the four belt transport mechanisms 11a to 11d have the same configuration, this will be described with reference to FIGS. First, a configuration in which the belt conveyance mechanisms 11a to 11d are movable in the width direction within the machine casing 12 will be described. Straight rails 14a and 14b are provided on the upper surface of the width direction beam members 13e and 13f constituting the machine frame 12, and rack teeth 15a and 15b are provided on the lower surface of the width direction beam members 13e and 13f, and are slid on the straight rail. Support members 17a and 17b provided with linear guides 16a and 16b are provided so as to be movable, bearings 18a to 18d are supported by the support members, and a motor 19 is fixed to the bearing 18d at one end. The connected rotary shaft 20 is rotatably supported by the bearings 18a to 18d, the gears 20a and 20b fixed to the rotary shaft 20 are meshed with the rack teeth 15a and 15b, and a fixed beam is fitted to the upper ends of the support members 17a and 17b. 21 is fixedly supported horizontally, and the movable beam 22 is slidably accommodated in a cylindrical portion 21a formed in a substantially first half of the fixed beam. Movable beam is configured to be able to stretch forward from parts. Then, the rotating shaft 20 is driven to rotate by the motor 19 and the gears 20a and 20b are rotated so that the fixed beam 21 is moved and stopped in the width direction in the machine frame 12 together with the movable beam 22. Yes.

  The fixed beam 21 is provided with a bearing 23 at the rear end thereof, so that the rear end turn roller 24 is rotatably supported. Reference numeral 26 denotes a drive shaft that rotatably supports the rear end side turn roller 24 at both ends thereof on the bearings 14a and 14b. The drive shaft has spline-like engagement grooves formed on the outer periphery over its entire length. When the inner periphery of the rear end side turn roller 24 is engaged with the engagement groove, the rear end side turn roller 24 is movable along the drive shaft, and the drive shaft 26 is a motor (not shown). Is rotated in the direction of the arrow so that the rotation is transmitted to the rear end side turn roller 24. Further, a bearing 27 is provided at the front end portion of the movable beam 22, and the front end side turn roller 28 is rotatably supported. An endless belt-like conveying belt 30 is stretched between the rear end side turn roller 24 and the front end side turn roller 28. A motor 31 fixed to the lower surface of the fixed beam 21 is provided with a screw shaft 32 that extends into the cylindrical portion 21a of the fixed beam 21 on the rotating shaft of the motor 31. When the female screw member 33 fixed at the end is screwed and the screw shaft 32 is rotated, the movable beam 22 slides in the cylindrical portion 21a, and the movable beam 22 is extended forward to an appropriate length. By the way, you can stop.

  Reference numeral 35 denotes a bearing roller 36 that hangs down substantially below the intermediate portion of the fixed beam 21, a guide roller rotatably provided on the bearing piece 37, and a bearing piece 38 that hangs down to the rear end of the movable beam 22, The lower return side of the conveyor belt 30 is wound around the guide roller 35 and the guide roller 37 in an S shape by a guide roller that is rotatably provided on the bearing piece. Further, 39 is a guide roller that hangs down the bearing piece 40 near the rear end of the fixed beam 21, and is rotatably provided on the bearing piece. 41 is a guide roller that is provided rotatably in the support member 17b. The guide roller 39 and the guide roller 41 are also slidably brought into contact with the lower return side of the conveyor belt 30 to bypass the conveyor belt 30 so as not to contact the width direction beam member 13f and the like. Thus, when the lower return side of the conveyor belt 30 is wound around the guide roller 35 and the guide roller 37 in an S shape, the guide roller 37 slides with the movable beam 22 when the movable beam 22 slides. The lower return side of the conveyor belt 30 is always stretched without slack. For this reason, when the drive shaft 26 is rotated by a motor and the rear end side turn roller 24 rotates, the conveying belt 30 circulates, so that the paperboard 7 placed on the conveying surface of the conveying belt 30 is moved forward. That is, it is conveyed in the direction of the arrow shown in the figure.

  In addition, an actuator 43 composed of a fluid pressure cylinder is provided at the front end of the movable beam 22, and a vertically long rectangular extrusion plate 44 is provided so as to appear and disappear in the traveling direction by the operation of the actuator. Further, 45 is provided with a vertical cylindrical mounting portion 46 at the front end portion of the movable beam 22, and the shaft support piece 47 is inserted into the mounting portion so as to be freely detachable, so that the height is substantially the same as the transport surface of the transport belt 30. An auxiliary roller to be supported.

  Further, 50a and 50b are a pair of width adjusting mechanisms for paperboard provided at the front end of the machine casing 12, and each of the width adjusting mechanisms includes the width direction beams constituting the machine casing 12 as shown in FIG. The projecting plates 51a and 51b projecting forward are fixed to both outward projecting ends of the member 13c, and guide shafts 52a and 52b and a screw shaft 53 are provided in parallel between the projecting plates. And a forward overhanging arm 55 that moves along the guide shafts 52a and 52b as the screw shaft 53 rotates, and a lock handle 56 is placed at an appropriate position on the front overhanging arm. The assembly body 57 is fixed by tightening, and a fluid pressure cylinder 58 is provided on the assembly body, and a lower edge portion 59a of the contact plate 59 is pivotally attached to the inner end edge of the assembly body. Connect the tip of the 58 piston rod to the contact plate 59. By supporting the corresponding plate 59 vertically, the relevant plate 59 and actuating the fluid pressure cylinder 58 is adapted to incite a fulcrum lower edge 59a.

  In this paperboard supply device, by operating the motor 19, as shown in FIG. 10, the four belt transport mechanisms 11a to 11d can be individually moved in the width direction. The distances between the belt conveying mechanisms 11a to 11d can be adjusted so that the conveying surfaces 11a to 11d respectively match the rectangular portions A1 to A4 of the paperboard 7. Further, by operating the motor 31 and extending the movable beam 22 to an appropriate length, the front end side turn roller 28 can be moved forward or backward to adjust the length of the transport surface of each of the belt transport mechanisms 11a to 11d. Therefore, by adjusting the distance between the belt conveying mechanisms 11a to 11d as described above, the front end side turn roller 28 of each belt conveying mechanism 11a to 11d is adjusted according to the shape of the rear edge of the paperboard 7. The paperboard 7 can be stably supported in a balanced manner, and the rear edge of the conveyed paperboard 7 is simultaneously detached from the conveyor belts of the belt conveyor mechanisms 11a to 11d, so that the paperboard 7 is inclined. It can be set so that it falls straight onto the stacking area B while maintaining a substantially horizontal posture. As a result, the paperboard 7 can be stacked on the stacking area B in an orderly manner.

  Further, the width aligning mechanisms 50a and 52b can adjust the distance between the two abutting plates 59 according to the width dimension of the paperboard 7 by operating the motor 54, and operate the fluid pressure cylinder 58 to move the abutting plates 59. By swinging, it is possible to align the paperboard 7 immediately before dropping to the stacking area B in the width direction. The paperboard 7 is also aligned in the front-rear direction by actuating the actuator 43 and pushing the paperboard 7 that has fallen into and out of the stacking area B forward and backward.

  Furthermore, by providing the auxiliary roller 45, the paperboard 7 protruding from the conveyance surface of each of the belt conveyance mechanisms 11a to 11d is temporarily supported by the auxiliary roller 45, so that the paperboard 7 is an abbreviation of the stacking area B. Since the paperboard 7 is kept in a horizontal state until it reaches right above, the paperboard 7 can be dropped straight while being kept in a horizontal state, and is difficult to be inclined when dropped. The paperboards 7 stacked can be fed systematically to the next printing machine, box making machine or the like (not shown).

The top view which shows an example of the paperboard which is going to convey with the paperboard supply apparatus of this invention. The side view of the whole paperboard supply apparatus which shows embodiment of this invention. The top view of FIG. The longitudinal cross-sectional view of the belt conveyance mechanism of the paperboard supply apparatus which shows embodiment of this invention. The enlarged view of the right half part of the belt conveyance mechanism of FIG. The enlarged view of the left half part of the belt conveyance mechanism of FIG. The operation state figure of FIG. The operation state figure of FIG. FIG. 4 is a view taken along line AA in FIG. 3. The operation state figure of FIG.

Explanation of symbols

7 Paperboard 10 Paperboard feeders 11a to 11d Belt transport mechanism 12 Machine frames 14a and 14b Straight rails 15a and 15b Rack teeth 16a and 16b Linear guide 19 Motor 20a and 20b Gear 21 Fixed beam 22 Movable beam 24 Rear end turn roller 26 Drive shaft 28 Front end side turn roller 30 Conveying belt 31 Motor 32 Screw shaft 33 Female screw member 35 Guide roller 37 Guide roller 43 Actuator 44 Extruding plate 45 Auxiliary rollers 50a and 52b Width alignment mechanism

Claims (4)

  A plurality of belt conveyance mechanisms for supporting paperboards such as corrugated paper are provided in parallel to the machine frame, and each belt conveyance mechanism is provided so as to be movable in the width direction so that the interval between the belt conveyance mechanisms can be adjusted. Each belt conveying mechanism is formed to be extendable by extending the movable beam forward from the front end of the fixed beam. The rear end turn roller is supported at the rear end of the fixed beam, and the front end of the movable beam. The front end side turn roller is supported, and an endless belt-like transport belt is stretched between the rear end side turn roller and the front end side turn roller, so that the length of the transport surface of each belt transport mechanism can be adjusted. A paperboard supply device characterized by the above.   By winding the lower return side of the conveyor belt in an S shape around a guide roller provided below the middle part of the fixed beam and a guide roller provided below the rear end of the movable beam, the conveyor belt is always slackened. 2. The paperboard supply device according to claim 1, wherein the paperboard supply device returns without any return.   3. The paperboard supply device according to claim 1, wherein an extrusion plate is provided at a front end portion of the movable beam so as to protrude and retract in a traveling direction by operation of an actuator.   2. An auxiliary roller is provided at the front end of the movable beam, and paperboards spaced from the conveying surface of the conveying belt are temporarily placed on the auxiliary roller and then dropped onto the stacking area. The paperboard supply apparatus in any one of -3.

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