JPH08165048A - Array device for conveying sheet - Google Patents

Abstract

PURPOSE: To facilitate sure conveyance and array by providing an elastic material roll and a pressing roll, and controlling a running condition of a sheet by an interposing rotational difference of both the rolls, in a straightening device in the case of transfer feed the corrugated fiberboard sheet from a cutoff outlet conveyer onto a singling conveyer. CONSTITUTION: In the intermediate between a cutoff outlet conveyer 1 and a singling conveyer 2, an elastic material roll 3 and a pressing roll 4 are provided respectively downward and upward a sheet bus line. Both haft end parts of the pressing roll 4 are journalled to a free end of arms 16a, 16b supported with the base end part to a shaft 15 rotated by a motor 22. By lifting (vertically moving) a beam 23 relating to frames 11a, 11b, an interaxis distance of shafts 15, 8, that is, a space between the elastic material roll 3 and the pressing roll 4 is arbitrarily adjusted, and by an interposing rotational difference between both the rolls 3, 4, a running condition (speed and direction) of a sheet 24 is controlled, to attain straightening the sheet 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alignment stabilizing means of a conveying sheet aligning device for transferring sheets from a cut-off exit conveyor onto a shingling conveyor and stacking them in a roof tile shape in a sheet stacking layer. . Further, the present invention can be applied to a general shingling device for a plate-shaped body such as paper, plastic, and thin sheet metal.

[0002]

2. Description of the Related Art FIG. 4 is a structural explanatory view of a conventional sheet aligning device, FIG. 5 is a schematic configuration diagram of a general sheet stacking device, and FIG.
FIG. 6 is a diagram illustrating a problem in the conventional method. A general sheet stacking apparatus is configured as shown in FIG. 5, and the corrugated board web continuously manufactured in the previous step is slitted into several pieces along the traveling direction and then cut off 25. Is cut into a predetermined length in the width direction to form a corrugated cardboard sheet 24, and is transferred onto the shingling conveyor 2 via the cutoff exit conveyor 1. The shingling conveyor 2 is operated at a speed lower than that of the cutoff exit conveyor 1 (a traveling speed of about 25% of the machine speed), and the conveyed corrugated cardboard sheet 24 is shingled on the shingling conveyor 2. After being stacked (roof tiles), the stacker unit 2 is passed through the conveyors 26 and 27 one by one.
8 is dropped into contact with the front stopper and sequentially stacked on the lifting table 29. Same lifting table 2
9 is controlled so as to be sequentially lowered in response to loading of the corrugated board sheet 24, and when stacking of a predetermined number of sheets is completed, the sheet bundle is transferred to the next step. Then lift table 2
9 is reset to the initial state (raised position), and sheet stacking for the next lot is restarted.

By the way, in the manufacturing process, defective bonding,
Various defective sheets such as warp, defective splicing, misalignment, dirt, and scratches may occur, and sheets having different shapes may be conveyed due to order change or the like. If these different kinds of sheets are mixed and stacked in the stacker unit 28, which is the final step of the corrugating machine, it will hinder the printing in the manufacturing process or the work of processing the sheets into boxes, and these defective sheets will be impaired. It is necessary to sort (separate) sheets having different specifications during transportation, and such sorting work is performed by a sheet sorting apparatus 30 provided between the shingling conveyor 2 and the first transport conveyor 26. As described above, the function required of the corrugated board sheet stacking device is to reliably sort defective sheets and sheets having different specifications, and to stably stack only desired non-defective sheets.

In order for the sorting device 30 and the stacker device 28 to operate normally, it is the most important factor that the sheets are shingled or conveyed as shown in FIG. 6A. Become. However, in the known conventional sheet alignment stabilizing device, as shown in FIG. 4, an elastic body (spring plate, plate brush) 31 provided on the upper side of the sheet inlet of the shingling conveyor 2 is used as the sheet alignment stabilizing means. Then, the shaft 33 which is laid horizontally through the pair of left and right cylinders 32a and 32b is rotated, and the traveling state of the corrugated cardboard sheet 24 is regulated by the reaction force of the tip of the elastic body 31 fixed to the coaxial shaft 33 through the stay 34. It has become. The pressing force of the elastic body 31 can be arbitrarily changed and set to some extent by adjusting the pressures of the cylinders 32a and 32b. However, an elastic body (generally, a spring plate or a plate brush made of metal or resin is used) 31 provided as shown in FIGS. 6B and 6C has a pressing force adjusting function. There is no restraint force against the lateral slip of the seat width direction,
At this time, if the sheet is strongly pressed, the sheet is crushed and the braking force cannot be increased due to a large change in the sheet mass and machine speed due to the order change, and the sheet is fed from the cutoff exit conveyor 1 to the shingling conveyor 2. It was difficult to correct the stop position (Sb in the figure) and the skewed state shown in the alternate long and short dash sheet (b) for the coming sheet.
As described above, in the conventional device, the measures to stably stack the sheets in a state of being aligned without being damaged by various sheets are incomplete, and it is not always certain that the shingling state as the basic element is guaranteed. I couldn't say that. Such an uncertain transportation state causes a trouble in the downstream process, which requires manpower for solving the trouble and significantly reduces the productivity.

[0005]

As described in the section of the prior art, in the conventional corrugated board sheet stacking apparatus, the sheet is transferred from the cutoff exit conveyor to the shingling conveyor while the sheet is being transferred to the stacker section. In this case, since the sheet is loaded with a predetermined head, it is loaded due to the variation of the sheet mass and the variation of the machine speed (sheet traveling speed) related to the width, length, flute type, etc. of the sheet. Not only does the sheet overlapping state (stop position) vary, but FIG.
As shown in the sheet (b) of (C), the stacking state on the shingling conveyor is deviated in the width direction such that the sheet runs obliquely and remains unstable, and the sheet tends to be unstable. For example, in addition to impairing sorting of defective sheets and sorting of irregularly shaped sheets due to order changes,
It caused troubles such as stacking in the stacker. For this reason, the labor of the correction work by the operator cannot be saved inevitably, which not only causes a decrease in productivity but also becomes a major factor of alienating the full automation of the machine.
The present invention has been proposed in order to solve these conventional problems, by ensuring the alignment of the transport and running state of the sheets to be stacked on the shingling conveyor,
(EN) Provided is a transport sheet aligning device capable of removing productivity in the next step and significantly improving productivity.

[0006]

Therefore, according to the present invention, a corrugated cardboard sheet cut to a predetermined length by the pre-process cutoff of the sheet stacking apparatus is transferred from the cutoff exit conveyor onto the shingling conveyor. In the conveying sheet aligning device, located below the intermediate sheet path line between the cutoff exit conveyor and the shingling conveyor, and located above the elastic sheet roll and the same sheet path line that rotate in the sheet advancing direction. A pressure roll that rotates (revolves) in a sheet advancing direction at a predetermined timing around a shaft arranged in parallel with the roll and that rotates in a direction opposite to the sheet advancing direction is provided. It is configured to control the traveling state (speed and direction) of the traveling sheet by the difference in the pinching rotation of the sheet. It is an unit for.

[0007]

With the structure described above, the traveling speed of the corrugated cardboard sheet 24 is obtained by clamping the elastic corrugated roll 3 and the pressing roll 4 against the corrugated cardboard sheet 24 transferred through the cutoff exit conveyor 1 immediately before the shingling conveyor. Can be decelerated, and the sheet 24 can be delivered onto the shingling conveyor at a predetermined timing. With this function, the front and rear positions of the sheets that are shingled (stacked in the shape of a roof tile) onto the shingling conveyor can be fixed. In addition, since the elastic roll 3 contacts the corrugated cardboard sheet 24 in the width direction to regulate the lateral slip, it is possible to improve the skewed state such as scattering after being thrown in. With the above functions, sorting of new and old sheets, sorting of good and defective sheets, and stacking of sheets in the stacker can be reliably performed when the next process order is changed.

[0008]

1 to 3 are explanatory views of a conveying sheet aligning apparatus according to the present invention installed between the cut-off exit conveyor 1 and a shingling conveyor, and FIG. 1 is an overall schematic configuration diagram,
2 and 3 are detailed views of the main part. The conveying sheet alignment stabilizing device of the present invention is installed between the cut-off exit conveyor 1 and the shingling conveyor 2 as shown in FIG. 1, and is the same sheet as the elastic roll 3 provided below the sheet path line. The pressure roll 4 is provided above the pass line. The elastic roll 3 is
As shown in FIG. 3 as an example, outer ring 5, inner ring 6 and both wheels 5, 6
A plurality of arms 7 for connecting to each other are integrally formed of urethane rubber, and a plurality of arms are fitted in the shaft 8 in the axial direction and fixed via a key 19. Both ends of the shaft 8 are pivotally supported by frames 1 and 11b (not shown) via bearing units 10. Reference numeral 12 in the drawing denotes a pulley fixed to the shaft 8, and the shaft 8 can be rotated at an arbitrary speed by connecting with a pulley fixed to a motor (not shown) with a belt. On the other hand, both shaft ends of the pressing roll 4 are attached to the bracket 1
Arms 16a and 16b fixed to a shaft 15 attached to bearings 14a and 14b to 3a and 13b.
It is pivoted to the edge. By the way, as shown in FIG. 2, a gear 17 is attached to the shaft end on one side of the pressing roll 4,
The gear 17 is fitted to the shaft 15 via an intermediate gear 19 which is axially attached to a pin 18 fixed to a part of the arm 16a,
Further, it is meshed with a gear 20 fixed to the bracket 13a (this gear 20 is adjusted concentrically with the shaft 15). A shaft end on one side of the shaft 15 is connected to a motor 22 via a coupling 21. The brackets 13a and 13b and the motor 22 are provided with a beam 23 that is bridged between the frames 11a and 11b of the device.
The shaft distance between the shafts 15 and 8 can be changed by moving the beam 23 up and down (moving up and down) with respect to the frames 11a and 11b, and the gap between the elastic roll 3 and the pressing roll 4 can be arbitrarily set. It can be adjusted.

Based on the above structure, the following operation will be described. The peripheral speed of the elastic roll 3 is usually set to a speed slightly slower than the speed of the sheet 24 conveyed through the cutoff exit conveyor 1 by the motor. On the other hand, the pressing roll 4 is driven by the motor 22 to drive the coupling 21,
1A-through the shaft 15 and the arms 16a and 16b.
As shown in the arrow A and BB arrows, the seat rotates (revolves) in the seat advancing direction, turns around the gear 20 fixed to the bracket 13a, and rotates through the intermediate gear 19 as shown by the arrow. (Rotate). That is, the pressing roll 4 rotates and moves in the traveling direction of the corrugated cardboard sheet 24 that is conveyed, and at the time of contact with the sheet 24, the pressing roll 4 rotates to rotate the sheet 2
The braking force is applied in the direction opposite to the traveling direction of 4. The illustrated pressing roll 4 is the cutoff exit conveyor 1
The sheet 24 is intermittently moved so as to be engaged with the sheet 24 sent out from the sheet at a predetermined timing. The initial contact position, contact time, and the like with respect to the seat 24 can be arbitrarily variably set by controlling the motor 22. As described above, according to the present invention, since the traveling speed of the sheet 24 from the cutoff exit conveyor 1 can be controlled and adjusted to an appropriate speed, the sheet 24 can be delivered onto the shingling conveyor 2, so that the shingling state can be more reliably achieved. can do. Further, although the elastic roll 3 adopted in the present invention allows the seat 24 engaged by the same structure and arrangement to move in the traveling direction (roll rotation direction), it partially moves in the opposite direction to the traveling direction of the sheet. Since it prevents the side slip from being attempted, the side slip can be effectively regulated with respect to the movement in the roll axis direction (sheet width direction), so that the sheet 24 is displaced in the width direction or in a state of being displaced obliquely. Problems such as being stacked are eliminated. With such a function of the present invention, the distance S from the upstream end side of the shingling conveyor 2 to the trailing end of the inserted sheet can be made constant, so that the sorting accuracy of the sorting apparatus can be improved for order change and defective sheets. And, the stacking state at the sheet stacking part is stabilized. It should be noted that the present invention is not limited to the above-mentioned embodiments, and various changes can be made without departing from the scope of the present invention.

[0010]

As described in detail above, according to the present invention, it is possible to surely perform the transportation and the alignment of the traveling states of the sheets to be stacked on the shingling conveyor, and to set the well aligned shingling state. , It has become possible to more stably perform the sorting work of unintentional sheets in the next process and the heterogeneous sheets due to order change and the state of the stacking load in the stacker section. As a result, it becomes unnecessary to perform various operations that are conventionally performed in the post-process, for example, the operation of removing foreign (different specifications) sheets mixed due to the sorting error and the operation of removing various defective sheets. Therefore, it becomes possible to eliminate the operator who takes the above-mentioned work, the sheet stacking can be fully automated, and the function can significantly improve the productivity.

[Brief description of drawings]

FIG. 1 is an overall schematic configuration explanatory diagram of an embodiment of a conveying sheet aligning device according to the present invention.

FIG. 2 is a detailed explanatory view of a pressure roll unit.

FIG. 3 is a detailed explanatory view of an elastic roll portion.

FIG. 4 is a structural explanatory view of a conventional sheet aligning device installed in a sheet feeding portion of a single ring conveyor.

FIG. 5 is an operation explanatory view of a general sheet stacking device.

FIG. 6 is a diagram for explaining problems in the conventional sheet conveying unit,
It is a figure of the state where the sheet was transferred from the cutoff exit conveyor onto the shingling conveyor.

[Explanation of symbols]

 1 Cutoff Exit Conveyor 2 Shingling Conveyor 3 Elastic Roll 4 Pressing Roll 5 Outer Ring 6 Inner Ring 7 Arm 8 Shaft 9 Key 10 Bearing Unit 11 Frame 12 Pulley 13 Bracket 14 Bearing 15 Shaft 16 Arm 17 Gear 18 Pin 19 Intermediate Gear 20 Gear 21 Coupling 22 Motor 23 Beam 24 Sheet (cardboard sheet)

Claims (1)

[Claims] 1. A cut-off outlet in a conveying sheet aligning device for transferring a corrugated cardboard sheet cut into a predetermined length by a pre-process cut-off of a sheet stacking device from a cut-off outlet conveyor onto a shingling conveyor. Located below the intermediate sheet path line between the conveyor and the shingling conveyor and above the elastic sheet roll that rotates in the sheet advancing direction and above the same sheet path line, centered on a shaft that is juxtaposed to the elastic roll. The sheet is provided with a pressure roll that rotates (revolves) in the sheet advancing direction at the timing of, and that rotates in a direction opposite to the sheet advancing direction, and the traveling of the sheet that runs due to the difference in the sandwiching rotation of the pressure roll and the elastic roll. An apparatus for aligning conveyed sheets, which is configured to control a state (speed and direction).