JP6026592B1 - Cardboard sheet stacking device - Google Patents

Abstract

The present invention provides a cardboard sheet stacking apparatus that stacks corrugated cardboard sheets accurately on a pallet in a hopper guide without lateral displacement in the horizontal direction regardless of the size of the width. A corrugated cardboard sheet cut to a predetermined length is conveyed and discharged from a carry-out conveyor, and the tip of the corrugated cardboard sheet is brought into contact with a vertical guide plate of a hopper guide, dropped onto a pallet and sequentially stacked. In the corrugated sheet stacking apparatus, a sheet blinder 50 formed by arranging a large number of strips 50b in parallel so as to be rotatable is disposed on the discharge side of the carry-out conveyor so as to be wider than the lateral width of the corrugated sheet 37 in the direction orthogonal to the traveling direction. The strip piece 50b of the sheet blinder 50 is a pressing member that keeps the passage width portion of the corrugated cardboard sheet 37 in the advancing direction and keeps the portions other than the passage width portion suspended and presses both outer edges of the sheet blinder 50 inward. At E1 and E2, the lateral shift of the cardboard sheet 37 is eliminated. [Selection] Figure 4

Description

  The present invention conveys a cardboard sheet cut to a predetermined length by a cut-off device and discharges it from a carry-out conveyor, and drops the cardboard sheet onto a pallet by bringing it into contact with a vertical guide plate of a hopper guide. The present invention relates to a corrugated sheet stacking device that eliminates lateral misalignment of corrugated sheets when sequentially stacked.

  The present applicant supports at least the carry-in end of the conveyer conveyor on the carry-out side consisting of a multi-belt belt on a support base, and the front surface of the conveyer is bent upward from the carry-in end to the central part. An unloading conveyor composed of a multi-belt belt bent downward from the unloading end is disposed so as to freely move up and down. A cardboard sheet stacking device has been developed in which the carry-out end is supported on both sides of the central portion of the multi-belt belt in the carry-out conveyor, and a hopper guide provided with a vertical guide plate is mounted at the carry-out end of the carry-out conveyor.

Japanese Patent No. 2872608

  In the cardboard sheet stacking apparatus, the cardboard sheet 37 is discharged from the carry-out conveyor B to the hopper guide C, slides while being supported on the cardboard sheet already loaded, stops and abuts on the vertical guide plate 36. The rear end side falls and is stacked on the pallet 38.

  At this time, as shown in FIGS. 7 and 8, if the cardboard sheet 37 vigorously collides with the vertical guide plate 36 in the hopper guide C, a rebound phenomenon occurs and the cardboard sheet does not stop at a predetermined position accurately, There is a problem of causing a lateral shift in the direction.

  In this case, as shown in FIG. 9, a large number of strips are arranged in parallel on the discharge side of the carry-out conveyor B in the direction orthogonal to the sheet traveling direction in order to suppress the lateral shift on the rear end side of the cardboard sheet 37. It is conceivable that the sheet blinder 50 is suspended and arranged so that lateral deviation is suppressed by strip pieces in a hanging posture on both the left and right sides that are not pushed by the sheet 37. However, the strip in the hanging position needs to have a thickness of about 6 mm, and a space Y similar to this thickness is created between the strip that the cardboard sheet pushes up and the adjacent strip that cannot be pushed up. There is a problem in that a lateral shift equivalent to this thickness may occur, and the corrugated cardboard sheets cannot be accurately stacked on the pallet in the hopper guide.

  The present invention has been made on the basis of these points, and the object of the present invention is to accurately stack the corrugated cardboard sheets on the pallet in the hopper guide without any lateral displacement in the horizontal direction. An object of the present invention is to provide a stacking device for corrugated cardboard sheets.

  In order to achieve the above object, a cardboard sheet stacking apparatus according to claim 1 of the present invention conveys a cardboard sheet cut to a predetermined length by a cut-off device, discharges it from the carry-out conveyor, and hoppers the leading end of the cardboard sheet. In the corrugated sheet stacking apparatus which is brought into contact with the vertical guide plate of the guide and dropped onto the pallet and sequentially stacked, a sheet blinder comprising a large number of strip pieces arranged in parallel on the discharge side of the carry-out conveyor. Arranged wider than the lateral width of the corrugated cardboard sheet in the direction perpendicular to the traveling direction, the corrugated cardboard sheet passing width part of the above-mentioned sheet blinder strips is avoided in the traveling direction, and the remaining part other than the passing width part is kept suspended. A pressing member that presses both outer edges of the sheet blinder inward, and It is characterized in that it has configured to eliminate lateral displacement of the cardboard sheet by pressing the piece from both outer edges to the inside.

  According to a second aspect of the present invention, there is provided a cardboard sheet stacking apparatus according to the first aspect, wherein the pressing member comprises an air cylinder or a hydraulic cylinder, a piston that moves forward and backward, and a pusher attached to the tip of the piston. It is characterized by this.

  A corrugated sheet stacking device according to claim 3 is the corrugated sheet stacking device according to claim 1, wherein the pressing member includes an electric motor or an air motor, an eccentric cam attached to a rotating shaft of the electric motor or the air motor, and the pressing member. It comprises a rod that moves forward and backward by an eccentric cam and a spring, and a pusher attached to the tip of the lot.

  On the discharge side of the carry-out conveyor, a sheet blinder, in which a large number of strips are arranged in parallel so as to be rotatable, is arranged wider than the lateral width of the cardboard sheet in the direction orthogonal to the traveling direction. The corrugated sheet passing width portion that passes through the strip pieces is avoided in the traveling direction, and other than the passing width portion is maintained in a suspended state, and a pressing member that presses both outer edges of the sheet blinder inwardly is attached. By pressing the strip pieces inward, both outer edges of the cardboard sheet are pressed. As a result, the corrugated cardboard sheet shifted laterally to the left and right with respect to the traveling direction is corrected to an accurate position without being displaced by pushing the lateral edge on the rear side protruding outward to the inside.

Further, when the pressing member is composed of an air cylinder or a hydraulic cylinder, a piston that moves forward and backward, and a pusher attached to the tip of the piston, the air pressure or hydraulic pressure control to the air cylinder or the hydraulic cylinder is performed. The pressing force can be adjusted appropriately.
The pressing member comprises an electric motor or air motor, an eccentric cam attached to the rotating shaft of the electric motor or air motor, a rod that moves forward and backward by the eccentric cam and a spring, and a pusher attached to the tip of the lot. In this case, the pressing force can be appropriately adjusted by performing inverter control on the electric motor or air pressure control on the air motor.

1 is a diagram illustrating an overall configuration of a cardboard sheet stacking apparatus according to a first embodiment of the present invention. 1 shows a first embodiment of the present invention and is a side view of a cardboard sheet stacking apparatus. FIG. 2 is an enlarged side view of the cardboard sheet stacking apparatus according to the first embodiment of the present invention. 1 is a front view of a sheet blinder according to a first embodiment of the present invention. 1 is a cross-sectional view of a pneumatic and hydraulic cylinder type pressing member according to a first embodiment of the present invention. 1 is a cross-sectional view of an electric and pneumatic cam type pressing member according to a first embodiment of the present invention. It is a side view of the stacking sheet of the conventional apparatus. It is a top view of a conventional device. It is a front view of a sheet blinder.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the figure, symbol A is a conveyor, B is a carry-out conveyor, C is a hopper guide, 50 is a sheet blinder, and E is a pressing member.

  A cardboard sheet stacking apparatus 10 according to the first embodiment of the present invention is an apparatus constituting a part of a corrugating machine. In FIG. 1, a long cardboard sheet 1 is cut into a predetermined length and a predetermined width by a cut-off device 3, and then a defective product is removed by a defect removing device 5. The corrugated cardboard sheet 37 cut to a predetermined size is sent to the two conveyors A in an overlapped state. From here, it is sent out to the carry-out conveyor B whose tip side is inclined up and down. At the discharge end of the corrugated cardboard sheet 37 that is the leading end of the carry-out conveyor B, there is provided a stacking device 10 that receives the leading ends of the corrugated cardboard sheets 37 that are successively fed by the vertical guide plate 36 of the hopper guide C and stacks them. The cardboard sheet stacking apparatus 10 is controlled by an operation control unit (not shown).

  As shown in FIGS. 1 and 2, the carry-out conveyor B, the pressing roller 40, and the sheet blinder 50 that put the cardboard sheet 37 into the hopper guide C are attached to the frame assembly F. The cardboard sheet stacking apparatus 10 is configured in a frame assembly F, and a vertical body F1 erected on the inner side of the frame assembly F includes an elevating body F2 that moves up and down by an elevating motor M2. A conveyor roller 39 provided at the tip of the carry-out conveyor B and a pressing roller 40 on the upper side are pivotally supported at the lower part of F2. As a result, the conveyor roller 39 and the pressing roller 40 facing each other are moved up and down by the lifting motor M2 that lifts and lowers the lifting body F2 in accordance with the stacking height H of the cardboard sheets 37 that are discharged and stacked on the pallet 38. Be controlled.

  As shown in FIG. 4, the sheet blinder 50 is disposed between the left and right vertical bodies F <b> 1 and F <b> 1 standing in a gate shape inside the frame assembly F in a direction orthogonal to the traveling direction of the cardboard sheet. In addition, the sheet blinder 50 is arranged in parallel so that, for example, strip pieces 50b and 50c having a thickness of 6 mm can be rotated so as to be wider than the lateral width dimensions of various corrugated cardboard sheets 37. The strips 50b and 50c are made of synthetic resin and have appropriate flexibility. Specifically, the seat blinder 50 is suspended along the lower edge of the connecting rod 51 installed horizontally between the lifting pieces u1 and u2 of the lifting units U1 and U2 attached to the left and right vertical bodies F1 and F1. The rod 52 is supported by a connector 53 and is suspended by this. As a result, the lower end sides of the large number of strips 50b and 50c are adjusted to be lower than the height level in the traveling direction O1 of the cardboard sheet. Therefore, when the corrugated cardboard sheet passes through the sheet blinder 50, the strip 50c of the passage width portion is avoided in an oblique posture in the traveling direction, and conversely, the strip piece 50b other than the passage width portion maintains a suspended state. Yes.

  Further, as shown in FIGS. 3 and 4, on both outer sides of the sheet blinder 50, the support plates 55 suspended from both ends of the connecting rod 51 are pressed and contracted inward from both outer edges of the strip 50b. Each pressing member E1 is arranged oppositely.

As shown in FIG. 5, the pressing member E <b> 1 is installed in the same configuration at the left and right symmetrical positions, so that only the right pressing member E <b> 1 is illustrated.
First, as an advancing / retreating drive source, a single-acting air cylinder or hydraulic cylinder that can simplify the configuration is adopted.

  As shown in FIG. 5, a pusher 60 is attached to the tip of a rod 71 that moves forward and backward directly inside and outside the cylindrical body 70. When the advancing / retreating drive source is an air cylinder or a hydraulic cylinder, the air pressure or hydraulic pressure from the pneumatic device E50 or the hydraulic device O50 is changed to a predetermined air pressure or hydraulic pressure by the pressure regulator CC based on a command signal from an operation control unit (not shown). Supply / discharge after adjusting to hydraulic pressure e3, e4. The pressing force P of the pusher 60 is set by the air pressure or the oil pressure.

  In addition, a spring 72 for retracting the rod 71 is housed in the cylinder 70, and a connection port 73 for inputting / outputting air pressure and a connection port 74 for inputting / outputting oil pressure are supplied with air pressure or oil pressure from each pressure controller CC. A pressing force P that overcomes the elastic force of the spring 72 is applied to the rod 71 that protrudes after supply and discharge, and is reciprocated. The protrusion amount (stroke amount) X of the pusher 60 is set based on the thicknesses of the strip pieces 50b and 50c of the sheet blinder 50. When an appropriate gap is provided in each strip 50b, 50c, the protrusion amount (stroke amount) is added by the gap amount.

  Since the pressing member E2 shown in FIG. 6 is installed in the same configuration at the left and right symmetrical positions in FIG. 4, only the right side pressing member E2 is illustrated. The advance / retreat drive source is the electric motor EM1 or the air motor EM2, and includes an eccentric cam 57 on the rotating shaft 55 of the electric motor EM1 or the air motor EM2. The eccentric cam 57 is connected to a cam follower 58 of a rod 56 pushed back by a spring 56a, and moves a pusher 60 attached to the tip of the lot forward and backward. The pusher 60 is controlled and rotated by inverter control to the electric motor EM1 or air pressure control to the air motor EM2. In this case, the protrusion amount (stroke amount) X of the pusher 60 is constant depending on the shape of the eccentric cam 57. The rod 56 is supported so as to be able to advance and retreat between a bearing hole h1 at the lower end of the support plate 55 that hangs down and a bearing hole h2 at the lower end of the support plate 55b that hangs down from the support plate 55a in the horizontal direction. .

As shown in FIG. 4, the seat blinder 50 is provided along the lower edge of the connecting rod 51 horizontally installed between the lifting pieces u1 and u2 of the lifting units U1 and U2 attached to the left and right vertical bodies F1 and F1. The suspension rod 52 is suspended from the attached suspension rod 52 via a connector 53.
The sheet blinder 50 and the pressing members E1 or E2 are configured to be moved up and down by a lifting motor M2 that lifts and lowers the lifting body F2 so as to be retractable from the operating position.

Thereby, the sheet blinder 50 with respect to the corrugated cardboard sheet 37 can adjust the height Z of the strips 50b and 50c that are suspended at both ends, and the pressing position of the strips 50b and 50c with respect to the corrugated cardboard sheet 37 can be adjusted to the optimum position. .
The lifting units U1 and U2 can be fixed. According to fastening means (for example, bolts and nuts) that can be adjusted, the lifting units U1 and U2 are fastening means (for example, bolts and nuts). It is possible to change the design.

Further, the installation position of the sheet blinder 50 in the traveling direction of the corrugated cardboard sheet is preferably set to the discharge end side of the carry-out conveyor B from the viewpoint of eliminating the inadvertent lateral deviation of the corrugated cardboard sheet. The attachment position is arbitrary such as the front side.
In addition, the attachment position of the pressing member E is set near the upper fulcrum position of the strip piece in the sheet blinder 50 as an example, but is not particularly limited to this position, and at the center position of the sheet blinder. The pressing position is arbitrary, such as being there or pressing below the fulcrum.

  Further, as a method of operating the cardboard sheet stacking apparatus, in FIG. 1, the cardboard sheet 37 is initially stacked by positioning the pallet 38 to the uppermost position by the control of the lifting motor M1 by the sensor S1. As the height H increases, the pallet 38 is sequentially controlled to be lowered, and the position of the corrugated cardboard sheet 37 is corrected by the front end of the carry-out conveyor B, the pressing members E1 and E2, the sheet blinder 50, etc., which are fixed in height. However, it is also possible to adopt an operation method in which the leading end of the carry-out conveyor B, the pressing members E1 and E2, the sheet blinder 50, etc. are controlled to rise together with the change in the stacking height H of the cardboard sheets 37 on the fixed pallet 38. Is possible.

  Although not shown, the sheet blinder can be divided into left and right parts. Further, in the case where the sheet is divided into left and right parts, it is possible to omit the sheet blinder in the central portion.

  Next, the operation of the cardboard sheet stacking apparatus 10 of the present invention will be described. The cardboard sheet is discharged from the discharge conveyor. At this time, the front end slides while being supported on the cardboard sheets already loaded, stops while coming into contact with the vertical guide plate 36, and the rear end falls and is stacked on the pallet 38.

  At this time, when the corrugated cardboard sheet 37 collides with the vertical guide plate 36 in the hopper guide C vigorously, a rebound phenomenon occurs, and the corrugated cardboard sheet does not stop at a predetermined position accurately, causing a lateral shift in the left-right direction.

  At this time, according to the cardboard sheet stacking apparatus 10 of the present invention, when the cardboard sheet passes through the sheet blinder, the strip piece 50c of the passage width portion is avoided in the traveling direction, while the strip piece 50b of the portion other than the passage width is It is not avoided in the direction of travel. The pressing members disposed opposite to both outer sides of the sheet blinder compress the sheet blinder inward from both outer edges when the cardboard sheet passes through the sheet blinder. On the other hand, the corrugated cardboard sheet shifted laterally to the left and right can be finely corrected to an accurate center position without any deviation by pushing in the lateral edges protruding to either outer side. In addition, the above functions can be performed without adjustment regardless of the width of the corrugated board sheet, and a driving device or the like necessary for positioning in the width direction is unnecessary.

  According to the cardboard sheet stacking apparatus 10 of the present invention configured as described above, on the discharge side of the carry-out conveyor, a sheet blinder having a large number of strip pieces arranged in parallel to be rotatable is orthogonal to the traveling direction. Since the width of the corrugated cardboard sheet is wider than the width of the corrugated cardboard sheet, the passing part of the corrugated sheet of the sheet blinder is avoided in the advancing direction, and the part other than the passing width part is kept suspended. A pressing member that presses both outer edges of the sheet blinder inwardly is attached, and both outer edges of the corrugated cardboard sheet are pressed by pressing the hanging strip pieces inwardly. As a result, the corrugated cardboard sheet shifted laterally to the left and right with respect to the traveling direction is corrected to an accurate position without displacement by pushing the lateral edge on the rear side protruding outward to the inside.

  Further, when the pressing member E is composed of an air cylinder or a hydraulic cylinder, a piston that moves forward and backward, and a pusher attached to the tip of the piston, the air pressure or hydraulic control to the air cylinder or hydraulic cylinder is performed. Thus, the pressing force can be adjusted appropriately.

  The pressing member E includes an electric motor or air motor, an eccentric cam attached to the rotating shaft of the electric motor or air motor, a rod that moves forward and backward by the eccentric cam and a spring, and a pusher attached to the tip of the lot. In such a case, the pressing force can be appropriately adjusted by performing inverter control on the electric motor or air pressure control on the air motor.

  In the stacking operation of the corrugated cardboard sheets 37 by the above operation, a large amount of corrugated cardboard sheets 37 are sandwiched between the roller 39 at the front end, which becomes the discharge end of the carry-out conveyor B, and the pressing roller 40 at the upper part one after another at a narrow interval. In the above description, the hopper guide C is positively charged. However, as shown in FIG. 9, when the corrugated cardboard sheet 37 is fed to the discharge end of the carry-out conveyor B at a relatively wide sparse interval, only one sheet is sandwiched between the roller 39 and the upper pressing roller 40. It will be positively put into the hopper guide C. According to this embodiment, the pushers 60, 60 of each pressing member E can correct the laterally displaced cardboard sheet 37 with a light pressing force for each sheet.

  The corrugated cardboard sheet stacking apparatus of the present invention has been described with the corrugated cardboard sheet 37 as the load, but the present invention is not limited to this, and the present invention can be implemented even with a resin sheet, a veneer board, cardboard, or the like.

DESCRIPTION OF SYMBOLS 1 Corrugated cardboard sheet 3 Cut-off device 5 Defect removal device 10 Corrugated paper sheet stacking device 36 Vertical guide plate 37 Corrugated paper sheet 38 Pallet 39 Roller 40 Pressing roller 50 Sheet blinder 50b Rod 53 Connector 55 Rotating shaft 56 Rod 57 Eccentric cam 60 Pusher X Projection amount (stroke amount)
Y space A conveying conveyor B unloading conveyor C hopper guide E pressing member EM1 electric motor EM2 air motor e2 command signals e3 to e4 air pressure or hydraulic pressure F frame assembly F1 vertical body F2 lifting body O1 traveling direction O50 hydraulic equipment E50 pneumatic equipment S1 sensor HDD storage unit H loading height M1, M2 motor U1, U2 lifting unit

Claims (3)

  Corrugated sheets that are cut to a predetermined length by the cut-off device and are discharged from the carry-out conveyor, and the tips of the corrugated sheets are brought into contact with the vertical guide plate of the hopper guide and dropped onto the pallet to be stacked one after another. In the stacking apparatus, on the discharge side of the carry-out conveyor, a sheet blinder formed by arranging a large number of strips in parallel so as to be rotatable is arranged wider than the lateral width of the corrugated cardboard sheet in a direction orthogonal to the traveling direction, The corrugated sheet passing width portion that passes through the strips of the blinder is avoided in the traveling direction, the other than the passing width portion is maintained in a suspended state, and pressing members that press both outer edges of the sheet blinder are attached, The lateral displacement of the corrugated cardboard sheet is eliminated by pressing the hanging strips inward from both outer edges. Stacking apparatus of the cardboard sheet, characterized by being configured so.   2. The cardboard sheet stacking apparatus according to claim 1, wherein the pressing member comprises an air cylinder or a hydraulic cylinder, a piston that moves forward and backward, and a pusher that is attached to the tip of the piston.   The pressing member includes an electric motor or an air motor, an eccentric cam attached to a rotating shaft of the electric motor or the air motor, a rod that moves forward and backward by the eccentric cam and a spring, and a pusher attached to the tip of the lot. The cardboard sheet stacking apparatus according to claim 1.

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