JP2000233854A - Inversion device for stacked sheets - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inversion device capable of reversing stacked sheets up side down, while they are being carried so as to let them be delivered in a state that both their side peripheries are made arrayed. SOLUTION: A sheet inversion frame 8 is provided for a moving path for stacked sheet So to be carried by a sheet carrying conveyor 2, and four housing parts 9 capable of housing the stacked sheets So are formed up over the sheet inversion frame 8 at angular intervals of 90 deg. each. When the stacked sheets So carried over by the sheet carrying conveyor 2 are sent into the housing part 9 held sideways, the sheet inversion frame 8 is rotated by 90 deg. so as to let the stacked sheets So be erected, and both its side peripheries and both the end peripheries of the laminated sheets So in an erected condition are made uniform by a side periphery arraying mechanism 13 and an end periphery arrangement mechanism. After that, the sheet inversion frame 8 is further rotated by 90 deg., and the stacked sheets So is then reversed up side down so as to be sent over to the sheet carrying conveyor 2 in order to be carried by the conveyor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacking sheet reversing apparatus for reversing a plurality of stacked sheets during transportation.

[0002]

2. Description of the Related Art A double-faced corrugated cardboard or a double-sided corrugated cardboard manufactured by a corrugator is cut into a predetermined length to form a corrugated cardboard sheet. In the case of forming a box using this corrugated cardboard sheet, usually, one side is appropriately printed by a printing device, and then punched into a predetermined shape by a punching device.
The stacked sheets are stacked in a predetermined arrangement on a pallet by a manipulator or the like. This piled sheet is distributed to the user together with the pallet. The user supplies the piled sheets to the paper feeding unit of the box making device to assemble the box.

[0003] Here, in the case of corrugated cardboard sheets stacked with the printing surface (front surface) facing upward by the sheet stacker, they are piled up with the printing surface facing upward by the palletizer.

When a user supplies such piled sheets to a box making apparatus and assembles the boxes automatically, the cardboard sheets are supplied to the paper feeding section of the box making apparatus with the printing surface facing upward, and the cardboard sheets are printed. Since the surface is bent inward, there is a disadvantage that the printed surface does not appear on the surface.

In order to solve such inconveniences, in a manufacturer of corrugated cardboard sheets, printed and punched corrugated cardboard sheets discharged from a sheet stacker are turned upside down and piled up on a pallet with the printed surface facing downward. Like that.

Further, the side edges of the sheets stacked on the sheet stacker are irregular, and there is a problem that such irregular piled sheets cannot be stacked on a pallet by a manipulator. To align the side edges of the sheet.

[0007]

By the way, the reversing and aligning work of the corrugated cardboard sheet discharged from the sheet stacker has conventionally been performed manually, resulting in extremely heavy labor.

[0008] Here, Japanese Utility Model Laid-Open No. 2-15951 discloses an automatic reversing device in which several cases bound by strings or tapes are turned upside down while being conveyed. This automatic reversing device is intended for a case bundle that has already been bound with side edges aligned, and a disk having a binding case receiver is provided between driving roller conveyors arranged linearly, and an upstream drive is provided. After the binding case is fed into the binding case receiver from the roller conveyor, the disc is intermittently rotated by 90 ° at a time, and is taken out onto the downstream drive roller conveyor in a state of being rotated by 180 ° and sent out. However, it does not have the function of aligning the side edges of the sheet.

[0009] By the way, when the stacking sheet having irregular side edges is inverted using the above-described automatic reversing device,
As a result, the stacked sheets cannot be automatically and orderly stacked on a pallet by a manipulator or the like.

SUMMARY OF THE INVENTION It is an object of the present invention to automatically turn a corrugated cardboard sheet up and down while transferring several uncorrugated cardboard sheets as a unit, and to discharge the sheets in an aligned state in which the side edges of the sheets are aligned. It is an object of the present invention to provide a stacking sheet reversing device capable of performing the above-mentioned operations.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, there is provided a sheet conveying conveyor and a stacking sheet transported in one direction by the sheet conveying conveyor. A sheet reversing frame provided with an accommodating portion capable of accommodating a sheet, and the sheet reversing frame is configured such that a sheet receiving opening of the accommodating portion is in a horizontal state in which the sheet receiving port is directed to the upstream side as one stop position, and upward from the stop position Rotating means for rotating in the direction, the stacked sheet fed into the storage portion, the stacked sheet reversing device that is reversed by the rotation of the sheet reversing frame and sent out by the sheet transport conveyor,
A configuration is provided in which side stacking means is provided for aligning the upper and lower side edges of the stacked sheets accommodated in the accommodating section at the stop position in the upright state with the side edges up and down.

In the reversing device having the above-described structure, after the stacked sheets conveyed by the sheet conveying device are fed into the holding portion held in the lateral direction of the sheet reversing frame, the sheet reversing frame is rotated by 90 °, and is rotated in the receiving portion. After aligning the upper and lower side edges of the plurality of standing sheets by the side edge aligning means, the sheet reversing frame is further rotated by 90 °, and the vertically inverted stacked sheets are received by the sheet transport conveyor and transported to the downstream side. .

[0013] Here, as the aligning means, a plurality of sheets are simultaneously lifted upward by raising the sheet receiving plate which is moved up and down by a predetermined stroke by the lifting means, and the sheet receiving plate is rapidly lowered to the bottom of the storage portion. It is possible to adopt one in which the upper and lower side edges of the sheet are aligned by an impact collision of the lower edge of the sheet.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 3, a stacked sheet S ₀ having several sheets S ₁ as one unit is
The sheet is conveyed in a direction indicated by an arrow in FIG.

Downstream of the sheet supply conveyor 1, three sheet conveyance conveyors 2 and sheet discharge conveyors 3 arranged in parallel are connected in order. A stopper 4 is provided between the sheet supply conveyor 1 and the sheet conveyance conveyor 2, and the stopper 4 is moved up and down by the operation of the cylinder 5, and the stacked sheets S ₀ are sent from the sheet supply conveyor 1 to the sheet conveyance conveyor 2. And rise,
The subsequent stacked sheets S ₀ are stopped on the sheet supply conveyor 1.

The sheet conveying conveyor 2 comprises a belt conveyor. Roller conveyors 6 are provided outside the sheet conveying conveyors 2 on both sides. The roller conveyor 6 stacks the stacked sheets S ₀ sent to the sheet conveying conveyor 2.
Both end portions is adapted to the case that protrude on both sides of the sheet conveyor 2, to support both ends of the stacked sheets S ₀ of.

[0017] Of the three sheet conveying conveyors 2 arranged in parallel, the central sheet conveying conveyor 2 is divided into a front sheet conveying conveyor 2a and a rear sheet conveying conveyor 2b. A sheet reversing frame 8 is provided between the sheet conveying conveyors 2 on both sides.

[0018] The sheet reversing frame 8 four container 9 to accommodate stacking sheet S ₀ is formed at intervals of 90 °. The two side walls of each storage section 9 are composed of two arms 9a and 9b arranged in parallel, and between the two arms 9a and 9b, the width of the front sheet transport conveyor 2a and the width of the rear sheet transport conveyor 2b is smaller. Wide intervals are provided.

The sheet reversing frame 8 is provided for the sheet conveying conveyor 2.
It is fixed to the rotary shaft 10 provided so as to cross the transfer path of the stacked sheets S ₀ carried by.
Both ends of the rotating shaft 10 are rotatably supported by bearings 11, and a motor 12 is connected to one end of the rotating shaft 10.

The sheet reversing frame 8 is intermittently rotated by 90 ° in the direction of the arrow in FIG.
In the stopped state, one of the four storage units 9 is in a horizontal state in which the sheet receiving port faces the direction of the sheet supply conveyor 1.

For this reason, by feeding the stacked sheets S ₀ from the sheet feeding conveyor 1 onto the sheet conveying conveyor 2, the stacked sheets S ₀ are accommodated by the sheet conveying conveyor 2 with the side edges in the front-rear direction being irregular. 9 and the stacked sheet S ₀ is set up by the 90 ° intermittent rotation of the sheet reversing frame 8.

As described above, only by standing up,
Uneven side edges of the sheet S ₁ which is transformed from the longitudinal direction in the vertical direction is not eliminated.

A side edge aligning mechanism 13 for aligning both side edges of each sheet S ₁ is provided below both ends of the plurality of sheets S _{1 in} the upright state. Further, at both ends outside the plurality of sheet S _1, the edge alignment mechanism 14 is provided to align the edges of each sheet S _1.

The side edge aligning mechanism 13 includes a sheet receiving plate 13a.
When lifting the sheet receiving plate 13a made of a cylinder 13b of the lifting means for a predetermined stroke lifting movement, at the same time a plurality of sheets S ₁ at rising of the sheet receiving plate 13a in a state of supporting the side edges of the lower , and to align the side edge of each sheet S ₁ by the sheet receiving plate 13a from the state lifted rapidly lowers the bottom impact collision of the side edges of the lower sheet S ₁ with respect to the container 9.

Furthermore, more preferably the provision of edge alignment mechanism aligns also the edge of the sheet S _1, the mechanism may be provided either upstream or downstream of the reversing apparatus described above, this embodiment In the embodiment, it is provided in the reversing device.

As shown in FIG. 4, the edge aligning mechanism 14
Consists of a pusher 14a and a cylinder 14b for moving the pusher 14a back and forth.
4a is to align the edges of the sheet S ₁ by pressing the end edges of the sheet S ₁ at the same time back-and-forth movement and forward.

[0027] Here, each of the edge aligning mechanism 14 is positioned adjusted according to the length of the sheet S _1. As a position adjusting mechanism, wherein the cylinder 14b is supported by the movably supported support base 15 against the end face of the sheet S ₁ of the upright position, the pinion with the rack 16 provided on the upper side of the supporting table 15 The pinion 17 is driven by a motor 18 fixed to a frame (not shown) to move the support 15.

Now, the sheet S ₁ with the print surface facing upward is shown.
Are stacked as one unit, and the stacked sheets S _{0 in} which both side edges in the front-rear direction are not aligned are the sheet feeding conveyors 1.
, The stopper 4 is raised, and the subsequent stacked sheets S ₀ are stopped on the sheet supply conveyor 1.

The stacked sheets S ₀ sent onto the sheet conveying conveyor 2 are conveyed by the sheet conveying conveyor 2 and sent to the horizontal storage section 9 of the sheet reversing frame 8.

When a sensor (not shown) detects that the stacked sheets S ₀ have been stored in the storage section 9, the sheet reversing frame 8 rotates 90 ° in the direction of the arrow in FIG.

On the other hand, the stopper 4 is lowered, the next stack sheet S ₀ misaligned state similarly opposite side edges from the sheet feed conveyor 1 onto the sheet conveyor 2 is supplied, its stacked sheet S ₀ sheet When possess on conveyor 2, the stopper 4 stops the next stack sheet S ₀ to rise again.

By the 90 ° rotation of the sheet reversing frame 8, the stacked sheets S ₀ stored in the storage section 9 are moved upward. The sheet reversing frame 8 rotates 90 ° and stops, and as shown in FIG. 5 (I), the plurality of sheets S ₁ have their both side edges converted in the vertical direction, and the sheet reversing frame 8 is still irregular. by holding upright state, the sheet receiving plate 13a is raised to lift the plurality of sheet S _1.

FIG. 5 (II) shows a plurality of states sheet S ₁ is lifted by the sheet receiving plate 13a. After rising stop sheet receiving plate 13a is immediately rapidly lowered, the sheet S ₁ by the descent be lowered, impulsively collides with the sheet reversing frame 8 of the bottom side edge accommodating portion 9 of the lower, the both side edges of the plurality of sheet S ₁ is aligned by the collision.

[0034] When the sheet receiving plate 13a is stopped at the lowered position, the pusher 14a arranged at both ends of the sheet S ₁ is advanced by the advancing edge of multiple sheets S ₁ are aligned.

The pusher 14a is stopped retracted, the next stack sheet S ₀ is housed in the housing portion 9 of the sheet reversing frame 8, sheet reversing frame 8 is rotated 90 °, opposite side edges and in that immediately before the stop Stacked sheet S with both edges aligned
_As shown in FIG. 5 (III), ₀ is received by the sheet transport conveyor 2 in a state where it is turned upside down, and is sent out onto the sheet discharge conveyor 3 by the sheet transport conveyor 2.

On the other hand, the second stacked sheet S ₀ is shown in FIG.
Is held in the standing state as shown in (III), of the sheet S ₀ is the first sheet receiving plate 13a of the elevating motion and edge alignment mechanism 14 as in the case side edges aligned mechanism 13 of the stacked sheets S ₀ The side edge and the edge are aligned by the forward and backward movement of the pusher 14a.

Thereafter, the above operation is repeatedly performed, and the stacked sheets S ₀ are sequentially turned over, and are sequentially fed onto the sheet discharge conveyor 3 with both side edges and both end edges aligned.

As in the embodiment, four sheets are
When One housing portion 9 provided at intervals of 90 °, housing portion of the next stack sheet S ₀ during operation to align the side edges and end edges of a plurality of sheets S ₁ held in the upright state sheet reversing frame 8 it is possible to feed the 9 can be efficiently performed with O aligned with inversion of stacked sheets S _0.

It should be noted that the number of the accommodating portions 9 formed in the sheet reversing frame 8 is arbitrary, and may be, for example, one as shown in FIG. 6I, or as shown in FIG. As shown, the number may be two. Any sheet reversing frame 8
Is also intermittently rotated by 90 ° in one direction.

The number of the sheet reversing frames 8 is also arbitrary,
As shown in FIG. 7, a plurality of sheet reversing frames 8
May be attached. When a plurality of sheet reversing frames 8 are used, the side edge alignment mechanism 1 is provided between the sheet reversing frames 8.
3 is provided.

As shown in FIG. 7, a plurality of sheet reversing frames 8 are provided.
Can be the length of the sheet S ₁ is held and stably even longer stacked sheets S ₀ by use of.

[0042] As embodiment, lifting the plurality of sheet S ₁ held in the upright state into a sheet reversing frame with irregular state in the vertical direction of the side edges by an increase in the sheet receiving plate 13a, the sheet receiving plate 13a so as to drop the sheet S ₁ by the lowering, when the align both side edges of the sheet S ₁ by the collision against the bottom of the container 9, it is possible to impart dispersancy force to the sheet S ₁ by the impact of the collision While the opposite side edges of the sheet S ₁ can be reliably aligned, side edge aligning mechanism 13 is not limited thereto.

For example, the upper edge of the sheet may be pushed down when the push plate moved up and down by the operation of the cylinder is lowered.

[0044]

As described above, according to the present invention, when a plurality of sheets are set in the upright state by the rotation of the sheet reversing frame, the upper and lower sides of the sheets are aligned by the aligning means. Sheets can be sent out in an aligned state, and there is no inconvenience that collapse occurs when transferring stacked sheets upside down. it can.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a reversing device according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a sectional view taken along the line III-III in FIG. 1;

FIG. 4 is a side view showing a pusher position adjusting mechanism of the reversing device according to the present invention;

FIGS. 5 (I) to (III) are schematic diagrams showing the operation of the reversing device according to the present invention step by step.

FIGS. 6A and 6B are schematic views showing another example of the sheet reversing frame.

FIG. 7 is a plan view showing another example of use of the sheet reversing frame of the reversing device according to the present invention.

[Explanation of symbols]

 2 Sheet conveyor 8 Sheet reversing frame 9 Storage section 13 Side edge alignment mechanism 13a Sheet receiving plate 13b Cylinder

Continuation of the front page (72) Inventor Takuya Ishibashi 2-5-25 Umeda, Kita-ku, Osaka-shi Rengo Co., Ltd. Inside the head office (72) Inventor Tatsuya Nakagaki 2-5-25 Umeda, Kita-ku, Osaka Rengo Co., Ltd. Office F-term (reference) 3F054 AA04 AC04 BH15 BH17 BH27 3F102 AA18 BA13

Claims (2)

[Claims] 1. A sheet reversing frame provided with a sheet conveying conveyor, and a storage section provided in a transfer path of stacked sheets conveyed in one direction by the sheet conveying conveyor and capable of storing the stacked sheets. A sheet reversing frame, and a rotating means for rotating the sheet receiving opening of the storage section in a horizontal state in which the sheet reception port faces upstream, as one stop position, and rotating upward from the stop position, the stack fed into the storage section. In a stacking sheet reversing device in which a sheet is reversed by rotation of a sheet reversing frame and sent out by the sheet conveying conveyor, the stacked sheets stored in the storage section are stopped at a standing position in an upright state with both side edges up and down. A stacking sheet reversing device provided with side edge aligning means for aligning upper and lower side edges of the sheet. 2. The apparatus according to claim 1, wherein the side edge aligning means includes a sheet receiving plate that simultaneously lifts a plurality of sheets standing up in the storage portion when the sheet is raised, and an elevating unit that moves the sheet receiving plate up and down by a predetermined stroke. Stacking sheet reversing device.