JPH07277572A - Sheet piler - Google Patents

Abstract

PURPOSE:To improve processing efficiency in a sheet piler by shortening the operating time of a process from sheet receiving to sheet stacking. CONSTITUTION:This sheet piler, which receives the front end of a paper sheet discharged from a conveyer with a stopper 5a to stack the sheets, is provided with a support guide mechanism 8 which delivers them in a stacking direction after holding the lower surface of both end parts in the width direction of the sheet, and holding members 8d, 8e which receive the lower surfaces of the sheets around a roughly horizontal rotating shaft disposed at angular pitches of at least 90 degree or more. By rotating the holding members 8d, 8e in such a direction as they separate downwards from the lower surface of the sheet, it is possible to set them in the conditions of delivery of preceding sheets and receiving of subsequent sheets together with the holding members 8d, 8e.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet piler for stacking thin plate-like sheets, which are conveyed and fed line by line, and sending them to a subsequent line.

[0002]

2. Description of the Related Art For example, as a sheet piler that cuts strip-shaped sheet materials that continuously run on a line, receives the sheets, stacks them, and flows them to the subsequent line, for example,
There is one described in Japanese Patent Publication No. 69001.

This sheet pillar is provided with a pair of guides in front of a stopper for receiving the sheet, and the guides are placed in a horizontal posture to receive the sheet, and the postures of the guides are changed obliquely downward to blow the sheet downward. It is to drop it. Each of the guides is connected to the cylinder, and the guides are opened and closed by the forward / backward movement of the rod.

[0004]

In the piling of sheet materials, it is the most important task to improve the processing efficiency by increasing the line speed and the stacking speed in the piler.

However, in the sheet pillar described in the above publication, after the sheet is received by the guide in the horizontal position, it is retracted obliquely downward and the sheet is discharged, and the guide is set in the horizontal position again to receive the subsequent sheet. It is a series of operations of returning. Therefore, the guide can be ready to receive the succeeding sheet only when the payout of the preceding sheet is completely completed. For this reason, there is a problem in that the line speed of the sheets is limited and the sheet stacking pitch is slow.

The problem to be solved in the present invention is to shorten the operation time in the process from sheet reception to stacking to improve the processing efficiency.

[0007]

According to the present invention, a stopper is provided in the vicinity of the downstream end of a conveyor for feeding sheets one by one, and the stopper receives the front end of the sheet discharged from the conveyor to lower the sheet. A sheet piler to be stacked on a sheet, and a support guide mechanism for holding out the lower surfaces of both ends in the width direction of the sheet that abut the stopper, and then paying out in the stacking direction, wherein the support guide mechanism has a substantially horizontal rotation axis. A plurality of holding members for receiving the lower surface of the sheet are provided at an angle pitch of at least 90 ° or more, and the rotation shaft has a rotation angle equal to the angular pitch of the holding member and receives the lower surface of the sheet. Is provided with a drive system for rotating the sheet downward from the lower surface.

As the holding member, it is possible to use a plurality of rotatable rollers arranged in the sheet feeding direction in a point-symmetrical relationship with respect to the core of the rotating shaft.

[0009]

When the holding member for receiving the lower surface of the seat is arranged in a point-symmetrical posture around the core of the rotating shaft, for example, the rotating shaft is rotated after one of the holding members receives the lower surface of the seat so that the holding member is When the holding member is rotated downward from the lower surface, the restraint of the holding member on the lower surface in the width direction of the sheet gradually disappears, and when the holding member rotates 90 °, the sheet material is blown off in the stacking direction.

After that, when the rotary shaft further rotates to change the posture by 180 °, the other holding member is set to the posture for receiving the lower surface of the succeeding sheet, and the holding member holding the sheet further moves to the next position. It will be ready to wait for the seat.

As described above, by the rotation of the holding member and the rotating shaft, the sheets held in advance are set to be in a state of being discharged and the sheets received in the succeeding state are set at the same time, and the stacking pitch of the sheets is increased. It

Further, if a row of rotatable rollers is used as the holding member, the resistance of sliding friction with respect to the sheet discharged from the conveyor can be suppressed, and the sheet surface is not scratched.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing a main part of a sheet conveying facility equipped with a sheet pillar of the present invention, and FIG. 2 is a view as seen in the direction of arrows AA in FIG.

In the figure, a lifter 2 is arranged below the downstream end of a conveyor 1 for conveying cut sheets, and a conveying roll 2a provided on the lifter 2 and a carry-out roll 2b arranged side by side with the conveying roll 2a. The guide 3 is provided for moving the stacked sheets inside and outside of the line.

A gate-shaped frame 4 is provided above the lifter 2, and a part of the frame 4 is parallel to the traveling direction of the conveyor 1.
Rails 4 provided on the upper surfaces of the upper frames 4a and 4b of the book
It is provided with a pillar truck 5 traveling on c and 4d.

The pillar truck 5 can be moved in the left-right direction in FIG. 1 by a driving device (not shown), can be set at a position corresponding to the length of the sheet material, and can be placed on the side away from the conveyor 1. Has a stopper 5a for receiving the leading edge of the sheet to be supplied.

As shown in FIG. 2, the pillar truck 5 includes:
Two fixing arms 6a and 6b are provided so as to project downward at a portion corresponding to the left end of the sheet material supply line. In addition, movable arms 6c and 6d are provided at positions facing the fixed arms 6a and 6b and sandwiching the supply line. These movable arms 6c, 6d are fixed arms 6a,
It is connected to the rod 7a of the cylinder 7 provided on the 6b side, and the distance between the fixed arms 6a and 6b can be changed as shown in FIG. Then, after supporting the lower surface of the sheet received by the stopper 5a on the lower ends of the movable arms 6a and 6b and the fixed arms 6c and 6d, respectively,
Support guide mechanisms 8 and 9 for removing the sheet on the transport roll 2a are provided.

FIG. 3 is a plan view showing an essential part of the support guide mechanism 9 on the fixed arms 6a and 6c side, and FIG. 4 is a longitudinal sectional view of the essential part.

The support guide mechanism 9 includes a drive motor 9a.
The retainer block 9c is fixed to the rotating shaft 9b connected to the retainer block 9c at a constant pitch, and two rollers 9d and 9e serving as holding members are rotatably provided around the axis of the retainer block 9c.

The rollers 9d and 9e have the same outer diameter and axial length, and are in a point-symmetrical positional relationship with the rotating shaft 9b, and their axes are parallel to each other. Therefore, when the rotary shaft 9b is rotated counterclockwise by 180 ° in FIG.
The positions of the rollers 9d and 9e are exchanged with each other, and the positional relationship of the rollers 9d and 9e with respect to the fed sheet is always maintained uniform.

The support mechanism 8 provided on the fixed arms 6a and 6b has the same structure, and as shown in FIG. 2, the retainer block 8c is symmetrical with the support guide mechanism 9 on the movable arms 6c and 6d side. Rollers 8d and 8e as holding members are located at. The arrangement level of these rollers 8d, 8e, 9d, 8e is set to be slightly lower than the conveying surface of the conveyor 1.

In the above structure, the movable arm 6c is moved by the cylinder 7 so that it can receive the lower surface of the widthwise edge of the sheet S to be piled (length in the left-right direction in FIG. 2). , 6d, and the position of the support guide mechanism 9 is determined. Further, the length of the sheet S in the supply direction is to be handled as the length included in the array length of the roller rows 8d, 8e, 9d, 9e of the support guide mechanisms 8 and 9.

In FIG. 1, the sheet S conveyed by the conveyor 1 in the direction of the arrow is thrown into the frame 4 and its leading end abuts against the stopper 5a, and the lower surface of the sheet S is lowered by the rollers 8d and 9d shown in FIG. Be taken. After this, the rollers 8c of the support guide mechanisms 8 and 9,
By replacing the positional relationship of 8d, 9c, and 9d, the supplied sheet S is wiped off to the transport roll 2a and the next sheet S is shifted to the receiving posture.

To explain this with reference to FIG. 4, the peripheral surface of one roller 9d receives the sheet S in the illustrated state, and the drive motor 9a synchronizes with the rotation shaft 9b in synchronization with the stop timing of the sheet S. At 180 ° counterclockwise. At this time, the rotating shaft 9b is 90 °
When the sheet S is rotated to a certain degree, the sheet S is not constrained by the peripheral surface of the roller 9d, and the sheet S is pulled out downward. Then, finally, the other roller 9e rotates to a position where the sheet S is received to change its posture, and stands by for the subsequent sheet S to be carried in.

Such operation is performed by the fixed arms 6a and 6b.
The same operation is performed in the support guide mechanism 8 on the side, and by synchronizing the operations of these support guide mechanisms 8 and 9, the supplied sheet S is delivered to the transport roll 2a after being received.

As described above, after the preceding sheet S is received and delivered to the conveying roll 2a, the position of the roller 9e is replaced with the conveying surface side in the example of FIG. That is, only by rotating the respective retainer blocks 8c and 9c of the support guide mechanisms 8 and 90 by 180 °, the payout of the sheet S and the setting of the subsequent sheet for receiving can be simultaneously performed. Therefore, the piling speed of the sheet S is increased as compared with the conventional three-fold operation of holding the sheet S by the guide, discharging the sheet S by changing the posture of the guide, and returning the guide to the sheet receiving position. Therefore, the processing efficiency can be improved.

Here, as in the example of FIG. 4, instead of the rollers 9e and 9d alternately forming the conveyance supporting surface of the sheet S by the rotation of 180 °, for example, an angle of 90 ° around the retainer block 9c. It may be provided with four rows of rollers at a pitch. In this case, the rotation angle of the retainer block 9c is 90 ° each time, and the piling speed is further improved as compared with the rotation of 180 °.

Further, not limited to the rotation angle pitch of 90 ° or 180 °, it suffices that the roller that receives the sheet S on the axis of the horizontal posture is inclined downward so that the sheet S can be pulled out. The roller row may have a rotation angle of 120 °. In any case, if the pitch of the rotation angles of the retainer blocks 8c and 9c is at least 90 ° or more, the same handling as in the previous example is possible.

Further, instead of providing the rollers 8c, 8e, 9d, 9e in the support guide mechanisms 8 and 9, for example, a belt which can travel with a small resistance may be provided in a horizontal loop shape. In this case, for example, a belt may be wound around both ends of the rollers 9d and 9e shown in FIG. 3 in the left-right direction.

Further, such rolling rollers 8c, 8
Not only e, 9d, 9e and running belts, but also skid-shaped flat plates with low sliding resistance are used as retainer blocks 8
It may be provided on both surfaces of c and 9c so as to be point-symmetric with respect to the rotation axis.

[0031]

According to the present invention, by rotating the support guide mechanism which receives both ends of the sheet to be carried in in the width direction, it is possible to simultaneously pay out the sheet in the stacking direction and wait for receipt of the subsequent sheet. Therefore, the cycle of receiving and paying out the sheet is shortened, the line speed and the piling speed of the sheet to be supplied can be improved, and the processing efficiency is remarkably improved.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a piling facility equipped with a sheet pillar of the present invention.

FIG. 2 is a diagram of a main part when FIG. 1 is viewed in the direction of arrow AA.

FIG. 3 is a plan view showing a main part of a seat support guide mechanism.

FIG. 4 is a vertical cross-sectional view of a main part showing an arrangement of two rollers provided in a support guide mechanism.

[Explanation of symbols]

 1 Conveyor 2 Lifter 3 Guide 4 Frame 5 Piler Cart 5a Stopper 6a, 6b Fixed Arm 6c, 6d Movable Arm 7 Cylinder 7a Rod 8 Support Guide Mechanism 8c Retainer Block 8d, 8e Roller (Holding Member) 9 Support Guide Mechanism 9a Drive Motor 9b Rotating shaft 9c Retainer block 9d, 9e Roller (holding member)

Claims (2)

[Claims] 1. A sheet pillar in which a stopper is provided in the vicinity of a downstream end of a conveyor for feeding sheets one by one and the front end of the sheet discharged from the conveyor is received by the stopper to stack the sheets downward. A support guide mechanism for holding the lower surfaces of both ends in the width direction of the sheet that abut the stopper, and then paying out in the stacking direction, the support guide mechanism receiving the lower surface of the sheet around a substantially horizontal rotation axis. A plurality of holding members are provided at an angle pitch of at least 90 ° or more, and a holding member having a rotation angle of the rotation shaft equal to the angle pitch of the holding member and receiving the lower surface of the sheet is provided downward from the lower surface of the sheet. A seat pillar that has a drive system that rotates it away. 2. The sheet pillar according to claim 1, wherein the holding member is a plurality of rotatable rollers arranged in the sheet feeding direction in a point-symmetrical relationship with respect to the core of the rotating shaft.