JPH0585658A - Sheet conveying conveyor device - Google Patents

Abstract

PURPOSE:To correct the longitudinal positions of corrugated fiberboard sheets and prevent the side slip, scattering, and skewing of the corrugated fiberboard sheets by fitting elastic rolls to the tip sections of rocking arms, and braking the elastic rolls. CONSTITUTION:Corrugated fiberboard sheets cut at the preset length are sent to a shingling conveyor 17 from a cutoff outlet conveyor 16 and stacked into a roofing tile shape. The corrugated fiberboard sheets are inserted between the shingling conveyor 17 and elastic rolls 2 located above the upstream end section, braking devices 9 are activated, and the elastic rolls 2 are operated to correct the longitudinal positions of the corrugated fiberboard sheets. The side slip, scattering, and skewing of the corrugated fiberboard sheets are prevented by the elastic rolls 2, troubles occurring in the next process are prevented, and no manual work is required for removing the troubles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet conveying conveyor device for transferring corrugated board sheets cut to a predetermined length in a cut-off step as a pre-process of an auto stacker from a cut-off exit conveyor onto a shingling conveyor and stacking them.

[0002]

2. Description of the Related Art A conventional sheet conveying conveyor device will be described with reference to FIG. 6, in which 1 is a corrugated cardboard sheet, 13 is a cutoff, 16 is a cutoff exit conveyor, 17 is a shingling conveyor, 18 is a first conveying cow bear, and 19 is a second. Transport conveyor, 20 is a stacker device, 21 is a lifting table,
22 is a sheet sorting device.

In the conventional sheet conveying conveyer apparatus shown in FIG. 6, the corrugated board web continuously produced in the previous step is slit into several pieces and then cut in the lengthwise direction by the cut-off 13 to form the corrugated board sheet 1. Then, this is transferred to the shingling conveyor 17 by the cut-off exit conveyor 16. This shingling conveyor 17
Is driven at a speed lower than that of the cut-off exit conveyor 16 (a traveling speed of about 25% of the machine operation speed), and the corrugated cardboard sheets 1 that are continuously fed are shingled (stacked in a tile roof shape). The first conveyor 18
→ The sheets are loaded one by one into the stacker device 20 through the second transfer conveyor 19, brought into contact with the front stopper, and stacked on the elevating table 21.

The elevating table 21 sequentially descends in response to the insertion of the corrugated board sheets 1, and when a predetermined number of corrugated board sheets 1 are stacked on the elevating table 21, the sheet bundle is transferred to the next step. Then, the elevating table 21 is raised to the initial position, and sheet stacking for the next lot is continued. In the pre-process of the cutoff 13, various defective sheets such as defective bonding, warpage, defective splicing, misalignment, stains, and scratches may occur. Further, sheets having different shapes are conveyed according to the order change and the like. If these different sheets are mixed and stacked in the stacker device 20 which is the final step of the corrugated machine, they will cause trouble during printing in the manufacturing process or during box processing work. It is necessary to sort (separate) different sheets during transportation.

This sorting work is performed by a sheet sorting device 22 provided between the shingling conveyor 17 and the first transfer conveyor 18. As described above, the required function of the sheet conveying conveyor device shown in FIG. 6 is to select a defective sheet or a sheet having different specifications from a non-defective sheet and send only the non-defective sheet to the stacker apparatus 20.

At this time, it is the most important factor to align non-defective sheets as shown in FIG. 7 so as not to disturb the shingling state of the sheets or the conveying state.
FIG. 8 shows the disturbance of the sheet. A conventional example of a sheet aligning device for aligning sheets will be described with reference to FIGS. 9 to 11, in which 1, 16, 17, and 18 are the same portions as those described above, and 23
Is a spring plate (or a plate brush) provided on the upper side of the sheet introduction port of the shingling conveyor 17, 26 is a stay provided on the upper end of the spring plate 23, and 25 is a swingable support for the spring plate 23 via the stay 26. The pivots 24a and 24b are cylinders for swinging the spring plate 23.

In the sheet aligning device shown in FIGS. 9 to 11, the cylinders 24a and 24b are actuated to swing each leaf spring 23 around the pivot 25, and the reaction force of the tip of each leaf spring 23 is applied. The running state of the corrugated board sheet 1 is regulated. The pressing force of each leaf spring 23 is arbitrarily set by adjusting the pressure of the cylinders 24a and 24b.

[0008]

In the sheet aligning device shown in FIGS. 9 to 11, although the leaf spring (or plate brush) 23 made of metal or synthetic resin has a pressing force adjusting function, the sheet width is reduced. There is no regulation effect on side slip in the direction, and when the corrugated cardboard sheet 1 is strongly pressed, the sheet is crushed, so it is not possible to increase the braking force against a large change in the mass of the sheet and machine speed due to order change. , Cut-off exit conveyor 16 to shingling 17
It was difficult to correct the stop position of the sheet moving to S to Sb in FIG. 8 and to correct the skewed sheet (see b) to the normal state.

In other words, the function is insufficient as a sheet conveyer device which stably conveys a wide variety of sheets to the stacker device 20 without damaging them while keeping them aligned.
Insufficiency of this function causes trouble in the next process, and manpower is required to eliminate the trouble.
Moreover, during the trouble removal, the machine cannot be operated, which significantly reduces the productivity.

The present invention has been proposed in view of the above-mentioned problems, and the object thereof is to prevent troubles occurring in the next step and eliminate the trouble of removing the troubles.
Also, there is no need to stop the machine to eliminate troubles,
The point is to provide a sheet conveyor apparatus capable of improving productivity.

[0011]

In order to achieve the above object, the present invention is to transfer a corrugated cardboard sheet cut to a predetermined length in a cut-off process of a pre-process of an auto stacker from a cut-off exit conveyor to a shingling conveyor. In the stacking sheet conveying conveyor device, a plurality of swing arms are arranged along the width direction of the sheet above the upstream side end of the shingling conveyor for stacking traveling sheets in a roof tile shape, and on the surface of the corrugated cardboard seal. The elastic rolls that come into contact are attached to the tip ends of these swing arms, and a braking device is provided on these elastic rolls.

[0012]

The sheet conveying conveyor device of the present invention is constructed as described above, and when the corrugated board sheets are sent from the cut-off exit conveyor to the shingling conveyor and stacked in a roof tile shape, the corrugated board sheets and the shingling conveyor are used. While inserting into the elastic body roll located on the upper side of the upstream end, the braking device is actuated to brake each elastic body roll to correct the front-back position of the corrugated board sheet.
At this time, each elastic roll prevents the cardboard sheet from slipping sideways and scatters the cardboard sheet,
Avoid skewing.

[0013]

【Example】

(First Embodiment) Next, the sheet carrying conveyor device of the present invention will be described with reference to the first embodiment shown in FIGS.
1 of 2 is a corrugated cardboard sheet, 2 is a plurality of elastic rolls,
As shown in FIG. 3, these elastic rolls 2 have outer ring 3
And an inner peripheral ring 4 and a plurality of arms 5 connecting the inner and outer peripheral rings 3 and 4, and these parts 3 to 5 are integrally made of urethane rubber.

3 and 4, 6 is a boss which is inserted and fixed in the inner hole of the inner peripheral ring 4, 8 is a shaft which is fixed to the tip of the swing arm 28, and 7a and 7b are the boss 6 and the shaft 8. The elastic roll 2 rotates around the shaft 8 with a bearing interposed between the elastic roll 2 and the shaft 8. Reference numeral 9 in FIG. 2 denotes a braking device for each elastic roll 2, which includes a cylinder 10 and a cylinder 10.
Head 11 attached to the piston rod of
And the braking piece 12 attached to the elastic body roll 2, and the cylinder 10 is operated in the extension direction to press the braking piece 12 against the outer peripheral ring 3 of the elastic body roll 2 to brake the elastic body roll 2.

A pair of cylinders are provided on both sides of the traveling path of the corrugated board sheet 1, one brake rod is provided in the width direction, and both ends of the brake rod are supported by the heads of the cylinders. Then, by operating these cylinders in the expansion and contraction direction,
The braking rod may be pressed against the outer peripheral ring of each elastic roll to collectively brake each elastic roll. The cylinder 10 of the braking device 9 feeds a cutting signal from the cut-off 13 to the control device 14 so as to feed the cut corrugated cardboard sheet 1 from the position of each elastic roll 2 to the time of traveling to a predetermined position. It is operated when a certain time has elapsed, or is operated by a signal shifted based on the distance, or the position of the cut corrugated cardboard sheet 1 is detected by a transmission (or reflection) photoelectric tube, and the signal obtained at that time is detected by the cylinder 10 Backfeed and activate.

28 in FIGS. 1 and 2 is a plurality of swing arms, 29.
Is the pivot of these swing arms 28, and each elastic roll 2 is attached to the tip of these swing arms 28. Further, 15 is a balance weight attached to the end of each swing arm 28 on the side opposite to the roll side.
Thus, the pressing of the elastic roll 2 against the corrugated cardboard sheet (corrugated cardboard sheet on the shingling conveyor 17) 1 is adjusted.

Next, the operation of the sheet conveying conveyor device shown in FIGS. 1 to 4 will be specifically described. Cardboard sheet 1
The weight, size, etc. vary depending on the purpose of use. For example, a sheet weighing ^{500g / m 2 ~2000g / m 2} ( ratio 1: 4), the cut sheet length 500 meters / m3
There is 000 m / m (ratio 1: 6), and the machine speed (sheet running speed) is 1: 4 between the minimum speed and the maximum speed.
There is a double difference.

Therefore, comparing the kinetic energy (K) of the traveling corrugated board sheet 1, K = 1/2 m · v
² (m: mass, v: machine speed), maximum energy (Kmax) against minimum energy (Kmin)
Is Kmax = (4 × 6) × (4 ² ) (Kmin) = 3
It becomes 84 x (Kmin), which is 384 times higher. In the conventional sheet aligning apparatus shown in FIGS. 9 to 11, the sheets cannot be braked and aligned in accordance with all of these conditions. In other words, if you set the minimum conditions,
When the seat width, length, and machine speed are at their maximum, it hardly functions. On the contrary, when the maximum conditions are set, braking is too effective when the seat width, length, and machine speed are at their minimum. ,
There was the inconvenience that the sheet was broken or jammed up.

On the other hand, in the sheet conveyer apparatus of the present invention, when the corrugated sheet 1 cut to a predetermined length by the cutoff 13 is sent from the cutoff exit conveyor 16 to the shingling conveyor 17 to be stacked in a roof tile shape, this corrugated board is used. Sheet 1 is shingling conveyor 17
And the elastic body rolls 2 located on the upper side of the upstream end of the corrugated paperboard sheet 1, the braking device 9 is operated to brake the elastic body rolls 2 to correct the front-back position of the corrugated board sheet 1. .. At this time, the elastic rolls 2 prevent the corrugated board sheet 1 from slipping sideways to prevent the corrugated board sheet 1 from being scattered or skewed.

(Second Embodiment) Next, a sheet carrying conveyor device of the present invention will be described with reference to a second embodiment shown in FIG.
27 is an eccentric roll, which is rotated at a predetermined timing to bring it into contact with the elastic roll 2,
Separated from the elastic roll 2, the pressing force of the elastic roll 2 on the corrugated cardboard sheet 1 is adjusted.

It is more effective to install two sets of elastic rolls 2 in the sheet traveling direction as shown by the solid line (see 2) and the chain line (see 2 ') in FIG.

[0022]

As described above, the sheet conveying conveyor device of the present invention sends the corrugated board sheets to the cut-off exit conveyor → the shingling conveyor and stacks the corrugated board sheets on the roof tile shape. While inserting between the elastic rolls located on the upper side of the section, the braking device is operated to brake each elastic roll to correct the front-back position of the corrugated board sheet. At this time, each elastic roll prevents the corrugated board sheet from slipping sideways and prevents the corrugated board sheet from being scattered or skewed, so that troubles that occur in the next step can be prevented and troubles can be removed. It can eliminate manpower. In addition, there is no need to stop the machine for trouble removal, which has the effect of improving productivity.

[Brief description of drawings]

FIG. 1 is a first view of a sheet conveyor device according to the present invention.
It is a top view showing an example.

FIG. 2 is a side view of the sheet conveyor device.

FIG. 3 is a side view showing an elastic roll of the sheet conveyor device.

FIG. 4 is a front view of the elastic roll.

5A is a side view showing a second embodiment of the sheet conveyor apparatus according to the present invention, and FIG. 5B is an arrow A in FIG.
FIG. 6 is an operation explanatory diagram when not operating when viewed from the direction, and FIG. 7C is an operation explanatory diagram when operating when viewed from the arrow A direction of (a).

FIG. 6 is a side view showing a conventional sheet conveying conveyor device.

FIG. 7 is an explanatory diagram showing a sheet conveyance state of the sheet conveyance conveyor device.

FIG. 8 is an explanatory diagram showing a sheet conveyance state of the sheet conveyance conveyor device.

FIG. 9 is a side view showing a sheet aligning device of the sheet conveying conveyor device.

FIG. 10 is a plan view of the sheet aligning device.

FIG. 11 is a side view of the sheet aligning device.

[Explanation of symbols]

 1 Corrugated Cardboard Sheet 2 Elastic Roll 9 Braking Device 13 Cutoff 16 Cutoff Exit Conveyor 17 Shingling Conveyor 28 Swing Arm

Claims (1)

[Claims] 1. A sheet transfer conveyor device for transferring corrugated cardboard sheets cut to a predetermined length in a cut-off step of a pre-process of an auto stacker to a shingling conveyor from a cut-off exit conveyor and stacking the traveling sheets in a roof tile shape. A plurality of swing arms are arranged along the width direction of the sheet above the upstream end of the ring conveyor, and elastic rolls contacting the surface of the corrugated board seal are attached to the tip ends of these swing arms. A sheet conveying conveyor device, characterized in that a braking device is provided on these elastic rolls.