JPH08301493A - Accumulator - Google Patents

Abstract

PURPOSE: To save space by horizontally arranging a conveyer of low conveying speed under a conveyer of conveying a sheet downward, so that a large amount of sheets can be stably accumulated by giving a regular loop form to the sheet of soft quality. CONSTITUTION: A sheet S conveyed by the first conveyer 2, in a condition that the sheet S is sucked to a conveying surface of the first conveyer belt 2a by the first suction means 2c, is conveyed, consequently by this suction, in addition to essential rigidity of the sheet S, to give desired rigidity, also to give force to the sheet S of tending to advance in an extension direction along a conveying surface of the first conveyer 2. Accordingly, in a conveying speed V1 of the first conveyer 2 and a conveying speed V2 of the second conveyer 3 with the speed lower than the conveying speed V1, by changing ratio of the speeds V2/V1, a regular loop form on the second conveyer belt 3a can be given to the sheet S delivered tot the second conveyer 3 from the first conveyer 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulating device for imparting a regular loop shape to a soft sheet such as paper, non-woven fabric, and plastic film and stably storing the sheet.

[0002]

2. Description of the Related Art As is well known, in a line in which a soft sheet such as paper, non-woven fabric, or plastic film runs continuously, there is a case where a speed difference occurs between the sheets before and after the apparatus. For example, in the case of reel exchange when a sheet is wound in a reel shape, an accumulating device for temporarily absorbing speed is widely used.

As a conventional technique relating to such an accumulating device, there is one disclosed in Japanese Unexamined Patent Publication No. 3-172265 (hereinafter referred to as Prior Art 1) and Japanese Unexamined Patent Publication No. 2-249853.
Japanese Patent Application Laid-Open No. 2004-43055 (hereinafter referred to as Prior Art 2) and Japanese Utility Model Laid-Open No. 64-43055 (hereinafter referred to as Prior Art 3) have been proposed.

The prior art 1 includes a fixed pulley group including a plurality of pulleys and a movable pulley group including a plurality of pulleys that can move relative to each pulley of the fixed pulley group. The sheets are alternately wound between the pulleys of the pulley group to store the sheets.

The prior art 2 is intended for a single-sided corrugated cardboard sheet having high rigidity, and has a first conveyor inclined at an ascending slope and a downward slope connected to the first conveyor. A second conveyor arranged obliquely, and a third conveyor arranged continuously from the second conveyor and horizontally arranged, wherein the conveying speed of the second conveyor is higher than the conveying speed of the third sheet. The sheet is set at a high speed, the sheet is conveyed obliquely upward by the first conveyor, the sheet is bent by its own weight into a loop shape, and the sheet having the loop shape is transferred to the third conveyor through the second conveyor. Sheets are stored while maintaining a plurality of loop shapes on the third conveyor.

Further, the prior art 3 is intended for a sheet having high rigidity as in the prior art, and a sheet storage chamber having a belt conveyor inside is installed between the feeding device and the feeding device, The sheet feeding speed of the feeding device is made faster than the sheet feeding speed of the feeding device to convey the sheet, and the sheet is flexed in a wavy shape between the top plate portion of the storage chamber and the belt conveyor to be stored. is there.

[0007]

By the way, according to the above-mentioned prior art 1, in order to increase the seat storage amount in response to the speeding up of the apparatus, either the intervals between the pulley groups should be increased or the number of pulleys should be increased. Therefore, there is a problem that the device becomes large in size in any case. In addition, it takes a lot of time to set the initial seats, and maintenance is troublesome.
Furthermore, in order to apply a constant tension to the sheet during the storage / discharge process, a complicated control device is required.

Further, in the above-mentioned prior art 2, when the rigidity of the sheet is high, it is possible to easily convey the sheet obliquely upward by the first conveyor and give a loop shape in the delivery space. When the rigidity of the sheet is low, such as a soft sheet such as paper, non-woven fabric, and plastic film, the sheet conveyed diagonally upward hangs down immediately and cannot maintain the loop form.
It was difficult to give a regular loop shape.

Further, in the above-mentioned Prior Art 3 as well, when a low-rigidity sheet such as the above-mentioned soft sheet is applied, a small amount of electrostatic force or the like is applied to the sheet that is fed from the feeding device and the tension is released. However, there is a problem in that the stability of the sheet conveyance is lost due to the application of such external force, and the sheet is wound around the feeding device.

An object of the present invention is to impart a regular loop form to a soft sheet such as paper, non-woven fabric, plastic film, etc., so that a large amount of the sheet can be stably stored.
Another object of the present invention is to provide a space-saving accumulating device that does not require a large scale.

[0011]

According to the invention described in claim 1 of the present invention, the sheet fed from the feeding means is conveyed at the conveying speed V.
The first conveyer conveys downward at 1, and the sheet conveyed horizontally by the first conveyer arranged horizontally below the first conveyer is conveyed at a conveying speed V lower than the conveying speed V1.
2 and a second conveyor that conveys in a substantially horizontal direction,
The first conveyor is a breathable endless first conveyor belt, and a first winding drive for winding the first conveyor belt and rotating the wound first conveyor belt in a longitudinal direction. Means and first suction means for sucking the conveyed sheet to the conveying surface through the first conveyor belt, and the second conveyor is an endless second conveyor belt and the second conveyor. By providing a second winding driving means for winding the belt and driving the wound second conveyor belt to rotate in the longitudinal direction, the above-described object is provided. It has been achieved.

The invention according to claim 2 of the present invention is the accumulating device according to claim 1, wherein the ratio V2 / V of the conveying speeds is V2 / V.
The present invention provides an accumulating device, wherein 1 is 0.1 to 0.5.

According to a third aspect of the present invention, in the accumulating apparatus according to the first or second aspect, the second conveyor belt has air permeability, and the second conveyor conveys a sheet. The present invention provides an accumulating device, characterized in that it is provided with a second suction means for sucking the above-mentioned material onto its conveying surface through the second conveyor belt.

According to a fourth aspect of the present invention, in the accumulating apparatus according to the first aspect, between the first conveyer and the second conveyer, the second conveyer is arranged horizontally and in series with the second conveyer. There are 3 conveyors,
The third conveyor is a third winding drive that winds the endless third conveyor belt having air permeability and the first conveyor belt, and that rotationally drives the wound third conveyor belt in the longitudinal direction. And the third conveyor conveys the sheet conveyed at the conveyance speed V1 at the conveyance speed V3 between the conveyance speed V1 and the conveyance speed V2 and transfers it to the second conveyor. The present invention provides an accumulating device characterized by the above.

According to a fifth aspect of the present invention, in the accumulation apparatus according to any one of the first to fourth aspects, between the sheet conveyed by the first conveyor and the first conveyor belt. And an accumulating device, characterized in that a plurality of endless separation belts that can be driven to rotate independently of the first conveyor belt and that are narrower than the first conveyor belt are wound around the first conveyor belt. To do.

According to a sixth aspect of the present invention, in the accumulating apparatus according to any one of the first to fourth aspects, the sheet transferred from the first conveyor to the second conveyor or the third conveyor. The first aspect of the present invention is to provide an accumulating device including a first air supply unit for blowing compressed air to the back surface of the.

The invention according to claim 7 of the present invention is, in the accumulating apparatus according to any one of claims 1 to 6, a conveying means for pulling up and conveying the sheet conveyed by the second conveyor. And a second air supply unit that blows compressed air in a direction opposite to the pulling-up direction of the sheet along the surface of the sheet pulled up by the conveying unit. It is a thing.

According to an eighth aspect of the present invention, in the accumulating apparatus according to the first aspect, the first conveyor is arranged above the second conveyor with its conveying surface facing downward. The present invention provides an accumulating device characterized by the above.

According to a ninth aspect of the present invention, in the accumulating apparatus according to the eighth aspect, the first conveyor and the second conveyor rotate in opposite directions to each other, and Transport speed v1 and the second
The ratio V2 / V1 of the conveyor transport speed V2 is 0.03 to
The present invention provides an accumulating device characterized by being 0.5.

According to a tenth aspect of the present invention, in the accumulating apparatus according to the eighth or ninth aspect, the second conveyor belt has air permeability and the second conveyor conveys a sheet. The present invention provides an accumulating device, characterized in that it is provided with a second suction means for sucking the above-mentioned material onto its conveying surface through the second conveyor belt.

According to an eleventh aspect of the present invention, in the accumulating apparatus according to any of the eighth to tenth aspects, the sheet passing through the suction section by the first suction means of the first conveyor is The present invention provides an accumulating device, characterized in that it is provided with an air supply means for blowing compressed air to the back surface.

In the accumulating apparatus according to the first or second aspect of the present invention, the sheet conveyed by the first conveyor is sucked by the first suction means onto the conveying surface of the first conveyor belt. Since it is conveyed in a state, the desired rigidity due to suction is given in addition to the original rigidity, and the conveying speed V1 of the first conveyor and the conveying speed V2 of the second conveyor lower than the conveying speed V1. By changing the speed ratio V2 / V1, it is possible to impart a regular loop form on the second conveyor belt to the sheets transferred from the first conveyor to the second conveyor.

In the accumulating apparatus according to the third aspect of the present invention, in addition to the function of the accumulating apparatus according to the first or second aspect, the sheet provided with the loop form conveyed by the second conveyor. The suction force from below the sheet prevents slippage between the second conveyor belt and the sheet during conveyance, and enables more stable conveyance, and at the same time, the sheet with the loop form is compressed in the conveying direction. The amount of storage increases.

In the accumulating apparatus according to claim 4 of the present invention, in addition to the function of the accumulating apparatus according to claim 1, the conveying speed V2 lower than the conveying speed V3 from the third conveyor having the conveying speed V3. Since the sheet to which the loop form is applied is delivered to the second conveyor, the sheet is compressed in the conveying direction and the storage amount increases.

In the accumulating apparatus according to the fifth aspect of the present invention, in addition to the function of the accumulating apparatus according to any one of the first to fourth aspects, the separating belt causes the sheet to pass from the first conveyor belt. Since the sheet is forcibly peeled off, the conveyed sheet does not wind around the first conveyor belt, and the sheet is more stably delivered from the first conveyor to the second conveyor or the third conveyor.

In the accumulating apparatus according to claim 6 of the present invention, in addition to the operation of the accumulating apparatus according to any one of claims 1 to 4, the accumulating apparatus is transferred from the first conveyor to the second conveyor. By blowing compressed air to the back surface of the sheet by the first air supply means, the sheet is forcibly peeled from the first conveyor belt at the lower end portion of the first conveyor, so that the conveyed sheet is transferred to the first conveyor belt. Without wrapping around,
Transfer of the sheet from the first conveyor to the second conveyor or the third conveyor is performed more stably.

In the accumulating apparatus according to the seventh aspect of the present invention, in addition to the function of the accumulating apparatus according to any one of the first to sixth aspects, the sheet to be pulled up by the conveying means has The compressed air is blown in the opposite direction by the second air supply means, whereby wrinkles, folds and meandering of the sheet can be suppressed.

In the accumulating apparatus according to claim 8 or 9 of the present invention, the sheet hangs down by its own weight after passing through the sheet suction section by the first suction means of the first conveyor. It is conveyed downward and is transferred to the second conveyor. At this time, the transfer speed V1 of the first conveyor and the transfer measure V2 of the second conveyor slower than the transfer speed V1 are received from the first conveyor to the second conveyor by changing the speed ratio V2 / V1. The passed sheets are given a regular loop form on the second conveyor belt.

In the accumulating apparatus according to the tenth aspect of the present invention, in addition to the function of the accumulating apparatus according to the eighth or ninth aspect, the sheet provided with the loop form conveyed by the second conveyor is provided. The suction force from below the sheet prevents slippage between the second conveyor belt and the sheet during conveyance, and enables more stable conveyance, and at the same time, the sheet with the loop form is compressed in the conveying direction. The amount of storage increases.

In the accumulating apparatus according to the eleventh aspect of the present invention, in addition to the function of the accumulating apparatus according to the tenth aspect, the sheet has passed through the suction section of the sheet by the first suction means. After that, by blowing compressed air to the back surface of the sheet by the air supply means, the sheet is forcibly peeled from the first conveyor belt at the lower end of the first conveyor,
The conveyed sheet does not wind around the first conveyor belt, and the sheet is more stably delivered from the first conveyor to the second conveyor.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this invention, a conveyance speed means the speed of each conveyor.

FIG. 1 shows a first embodiment of an accumulating apparatus according to the present invention. In the figure, reference numeral 1
Is an accumulator, and S is a sheet.

As shown in FIG. 1, the accumulating apparatus 1 has a conveyor (first conveyor) 2 for conveying a sheet S supplied from a supply means (not shown) downward at a conveyance speed V1 substantially vertically. A conveyor (second conveyor) 3 that is horizontally arranged below the conveyor 2 and that conveys the sheet S conveyed by the conveyor 2 in a substantially horizontal direction at a conveyance speed V2 that is lower than the conveyance speed V1; It is provided with a feeding roller (feeding means) 4 that pulls up the sheet S conveyed by the above and further feeds it in a substantially horizontal direction.

The conveyor 2 is an endless conveyor belt (first conveyor belt) 2a having air permeability.
A winding drive means (first winding drive means) 2b for driving the conveyor belt 2a to rotate in the longitudinal direction, and a first suction means 2c for sucking the sheet S to be conveyed to the conveyance surface through the conveyor belt 2a. I have it.

The winding drive means 2b includes a pair of winding rollers 2d and 2e and a motor (not shown) for rotating the winding roller 2e. Further, the first suction means 2c is provided with a negative pressure source (not shown) and is arranged between the winding rollers 2d and 2e so that the sheet S can be sucked onto the conveying surface of the conveyor belt 2a. It has been done.

The conveyor 3 is provided with an endless conveyor belt (second conveyor belt) 3a and a winding drive means (second drive means) 3b for rotationally driving the conveyor belt 3a in the longitudinal direction. The winding drive means 3
The b is equipped with a pair of winding rollers 3c and 3d and a motor (not shown) for rotating the winding roller 3d.

In the accumulating apparatus 1, the sheet S conveyed by the conveyor 2 is conveyed while being sucked by the suction means 2c onto the conveying surface of the conveyor belt 2a. In addition to the desired rigidity, a desired rigidity is imparted to the sheet S, and the sheet S is imparted with a force to move in the extension direction along the conveying surface of the conveyor 2. Therefore,
Transport speed V1 of the conveyor 2 and the transport speed V1
By changing the conveyance measure V2 of the lower speed conveyor 3 and the speed ratio V2 / V1 thereof, as shown in the figure, the sheet S transferred from the conveyor 2 to the conveyor 3 is regularly looped on the conveyor belt 3a. Form is given.

As described above, according to the accumulating apparatus 1 according to the present embodiment, the soft sheet S can be provided with a regular loop shape to stably store and convey the sheet S. Further, since the sheet S is conveyed while being sucked by the suction means 2c of the conveyor 2, the stability of the conveyance of the sheet S is not lost even when a small external force such as an electrostatic force is applied, and the conventional sheet is not lost. You can also suppress the winding of. Further, since the device is not large in size, a large amount of sheets can be stored in a small space.

In the accumulating apparatus of the present invention, when the first conveyor and the second conveyor are rotated in the same direction (for example, the accumulating apparatus 1 of the first embodiment, or the second to eighth embodiments described later). In the form of accumulating device), the ratio V2 / V1 of the conveying speed is 0.1 to 0.
5, preferably 0.1 to 0.3. If the speed ratio is less than 0.1, troubles such as clogging of the sheet at the transfer portion of each conveyor occur when the sheet is transferred, and if the speed ratio exceeds 0.5,
It becomes impossible to form a continuous loop.

The soft sheet used in the accumulating apparatus of the present invention is a 45 ° cantilever method (JIS
L1096) is a soft sheet having a bending resistance of 150 mm or less, such as paper, non-woven fabric, and plastic film, and having a width of 50 to 1000 mm. In the apparatus of the present invention, the height of the loop applied to the sheet is 10 to 150 mm at the speed ratio V2 / V1.

FIG. 2 shows a second embodiment of the accumulating device according to the present invention. In the figure, reference numeral 10 indicates an accumulation device. Further, the same parts as those of the accumulation apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the accumulating apparatus 10, the conveyor belt 3a has air permeability, and the conveyor 3 conveys the sheet S to be conveyed.
The suction means 3e (second suction means) for suctioning the conveying surface through a is provided.

The suction means 3e is a negative pressure source (not shown).
And is disposed between the winding rollers 3c and 3d and located above the winding rollers 3c and 3d.
In the conveying section of the conveyor belt 3a, the sheet S having the loop shape can be sucked onto the conveying surface of the conveyor belt 3a.

In the above accumulating apparatus 10,
Since the suction force acts from below the sheet S having the loop shape conveyed by the conveyor 3, slipping between the conveyor belt 3a and the sheet S during the conveyance can be prevented and the sheet can be more stably conveyed. At the same time, the sheet S provided with the loop shape can be compressed in the transport direction, so that the storage amount can be increased.

FIG. 3 shows a third embodiment of the accumulation apparatus according to the present invention. In the figure, reference numeral 20 indicates an accumulation device. Further, the same parts as those of the accumulation apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 20 is constructed such that a conveyor (third conveyor) 5 is arranged between the conveyor 2 and the conveyor 3 in series and horizontally with the conveyor 3.

The conveyor 5 includes a conveyor belt (third conveyor belt) 5a and a winding drive means 5b (the third conveyor belt) which winds the conveyor belt 5a and rotates the wound conveyor belt 5a in the longitudinal direction. 3 winding drive means). The winding drive means 5
b includes a pair of winding rollers 5c and 5d and a motor (not shown) for rotating the winding roller 5d.

The conveyor 5 conveys the sheet S conveyed by the conveyer 2 at the conveying speed V1 to the conveying speed V1.
And is conveyed at the conveyance speed V3 between the conveyance speed V2 and the conveyance speed V2. The ratio V3 / V1 of the conveyor speed V1 of the conveyor 2 and the conveyor speed V3 of the conveyor 5 is 0.1 to 0.5, preferably 0.1.
Is about 0.3. The relationship between the transport speed V2 of the conveyor 3 and the transport speed V3 of the conveyor 5 is V2 <V3.

In the above accumulating device 20,
The sheet S conveyed by the conveyor 2 is conveyed while being sucked by the suction means 2c onto the conveying surface of the conveyor belt 2a, so that in addition to the original rigidity of the sheet S, a desired rigidity due to suction is imparted. At the same time, a force that tends to travel in the extension direction along the conveying surface of the conveyor 2 is applied. Therefore, the above conveyor 2
Of the conveyor speed V1 of the conveyor 5 and the conveyor speed V3 of the conveyor 5 slower than the conveyor speed V1 by changing the speed ratio V3 / V1 to the sheet S transferred from the conveyor 2 to the conveyor 5 on the conveyor belt 5a. A regular loop shape is given. Then, since the sheet S is transferred to the conveyor 3 driven at the transport speed V2 lower than the transport speed V3, the sheet S having the loop form is compressed in the transport direction, so that the storage amount can be increased. In the present embodiment, on the conveyor 3,
Equipped with the suction means 3e in the second embodiment,
Alternatively, by equipping the conveyor 5 with a suction means similar to the suction means 3e, slipping of the sheet S on the conveyor belt 3a or the conveyor belt 5a can be prevented and the sheet S can be more stably conveyed.

FIG. 4 shows a fourth embodiment of the accumulation apparatus according to the present invention. In the figure, reference numeral 30 indicates an accumulation device. Further, the same parts as those of the accumulation apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 30 is a pair of a sheet S which is conveyed by the conveyor 2 and the conveyor belt 2a, which can be rotationally driven independently of the conveyor belt 2a and which is narrower than the conveyor belt 2a. The separating belt 6 is wound around. The separating belt 6 is wound and driven by a winding driving means 6a independent of the winding driving means 2b of the conveyor 2, and the winding position of the lower end portion of the separation belt 6 is the conveyor 2
It is set further below the winding roller 2e.

In the above accumulating device 30,
In addition to the function and effect of the accumulating device 1, the sheet S is forcibly peeled from the conveyor belt 2a at the lower end of the conveyor 2 by rotating the separating belt 6 at the same speed as the conveyor belt 2a. Therefore, the conveyed sheet S does not wind around the conveyor belt 2. Therefore, the sheet S is delivered to the conveyor 3 more stably.

FIG. 5 shows a fifth embodiment of the accumulation apparatus according to the present invention. In the figure, reference numeral 40 indicates an accumulation device. Further, the same parts as those of the accumulation apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 40 is provided with a sprayer (first air supply means) 7 for blowing compressed air to the back surface of the sheet S transferred from the conveyor 2 to the conveyor 3.

The sprayer 7 is provided with a nozzle 7a having a slit-shaped discharge port wider than the sheet S, and a compressor (not shown) for supplying compressed air to the nozzle 7a. Then, the nozzle 7a is arranged so that its width direction is horizontal and the discharge direction has a downward gradient of a desired angle with respect to the conveyor 3, and the air compressed by the compressor is transferred from the conveyor 2 to the conveyor 3 It can be sprayed on the back surface of S.

In the above accumulating device 40,
In addition to the function and effect of the accumulator 1, compressed air is blown into the sheet S by the sprayer 7.
The sheet S is forcibly peeled off from the conveyor belt 2a at the lower end portion of the conveyor 2 by spraying on the back surface of the conveyor 2, so that the conveyed sheet S does not wind around the conveyor belt 2. Therefore, the sheet S is delivered to the conveyor 3 more stably.

FIG. 6 shows a sixth embodiment of the accumulation apparatus according to the present invention. In the figure, reference numeral 50 indicates an accumulation device. Further, the same parts as those of the accumulation apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 50 is provided with a sprayer (second air supply means) 8 for blowing compressed air to the back surface of the sheet S pulled up by the feeding roller 4 in a direction opposite to the pulling direction. There is.

The sprayer 8 is provided with a nozzle 8a having a slit-shaped discharge port wider than the sheet S, and a compressor (not shown) for supplying compressed air to the nozzle 8a. Then, with the tip of the nozzle 8a facing downward, the compressed air compressed by the compressor can be blown to the sheet S pulled up by the delivery roller 4 along the sheet surface in the direction opposite to the pulling direction.

In the above accumulating device 50,
In addition to the action and effect of the accumulating device 1, the compressed air compressed by the compressor is blown to the sheet S pulled up by the feeding roller 4 in the direction opposite to the pulling-up direction, so that the sprayer 8 and the sheet S are separated from each other. A negative pressure is generated between the sheets, and a desired tension can be applied to the sheet S by its absorbing force, and at the same time, the sheet S can be made to work in a direction following the air flow. Further, it is possible to suppress the generation of wrinkles, folds and meandering of the sheet, and to stably supply the sheet to the post-process apparatus.

FIG. 7 shows a seventh embodiment of the accumulation apparatus according to the present invention. In the figure, reference numeral 60 is an accumulating device, and 61 is a stock cover. Further, the same parts as those of the accumulation apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 60 is the first accumulator.
The accumulating apparatus 1 of the embodiment has a configuration including the sprayer 8 of the accumulating apparatus 50 of the sixth embodiment.

In the above accumulating device 60,
In addition to the action and effect of the accumulator 1 of the first embodiment, the effect of the sprayer 8, that is, the sheet S pulled up by the delivery roller 4 is attached to the sheet surface in the direction opposite to the pulling direction, By blowing compressed air with a compressor,
A negative pressure is generated between the sprayer 8 and the sheet S, and a desired tension can be applied to the sheet S by its absorbing force, and a function of causing the sheet S to bend in the direction of the air flow is generated. As a result, the occurrence of wrinkles, creases and meandering of the sheet is suppressed,
The effect that the sheet can be stably supplied to the post-process apparatus can be exhibited.

FIG. 8 shows an eighth embodiment of the accumulation device according to the present invention. In the figure, reference numeral 70 indicates an accumulation device. The same parts as those of the accumulating device 60 of the seventh embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 70 is the seventh device.
The accumulating device 60 of the embodiment further includes the fourth
The accumulating device 30 of the embodiment is provided with the separating belt 6.

In the above accumulating device 70,
In addition to the action and effect of the accumulating device 60 of the seventh embodiment, the separating belt 6 allows the sheet S to be transferred from the conveyor belt 2a at the lower end of the conveyor 2.
Since the sheet S is forcibly peeled off, the conveyed sheet S is not wound around the conveyor belt 2 and the sheet S is more stably delivered to the conveyor 3.

FIG. 9 shows a ninth embodiment of the accumulation apparatus according to the present invention. Reference numeral 8 in the figure
0 indicates an accumulation device. The same parts as those of the accumulating apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 80 is the first
Conveyor 2 in Accumulation Device 1 of Embodiment
Is disposed horizontally above the conveyor 3 while its conveying surface is directed substantially downward, and the conveyor belt 2a
The rotation direction of is reversed. A nip roll 2f is arranged on the conveying surface side of the conveyor 2, and the sheet S is sucked by feeding the sheet S to the suction section by the suction means 2c through the nip roll 2f and the conveyor belt 2a. Is performed smoothly, and the sagging of the sheet S can be prevented.

In the above accumulating device 80,
After passing through the suction section of the sheet S by the suction means 2c of the conveyor 2, the sheet S hangs down by its own weight and is conveyed downward, and is delivered to the conveyor 3. Then, the conveyor speed V1 of the conveyor 2 and the conveyor speed V2 of the conveyor 3 lower than the conveyor speed V1 are changed from the conveyor 2 to the conveyor 3 as shown in FIG. 9 by changing the speed ratio V2 / V1. A regular loop form is given to the sheet S delivered to the conveyor belt 3a.

In the accumulating apparatus of the present invention, when the first conveyor is arranged with its conveying surface facing downward and the first conveyor and the second conveyor are rotated in reverse (for example, the accumulating in the ninth embodiment). Device 80
Alternatively, in the accumulators of the tenth and eleventh embodiments described below), the ratio V2 / V1 of the transport speed V1 of the first conveyor and the transport speed V2 of the second conveyor is
It is set to 0.03 to 0.5, preferably 0.03 to 0.3. If the speed ratio is less than 0.03, troubles such as clogging of the sheet at the transfer portion of each conveyor occur when the sheet is transferred, and if the speed ratio exceeds 0.5, a continuous loop occurs. Cannot be formed.

FIG. 10 shows a tenth embodiment of the accumulation apparatus according to the present invention. In the figure, reference numeral 90 indicates an accumulation device. The same parts as those of the accumulating apparatus 1 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The accumulating device 90 is the same as the ninth device.
While the conveyor belt 3a of the conveyor 3 in the accumulation device 80 of the embodiment has air permeability,
Suction means 3e for the conveyor 3 to suck the conveyed sheet S to the conveying surface through the conveyor belt 3a.
It is provided with.

The suction means 3e is a negative pressure source (not shown).
And is disposed between the winding rollers 3c and 3d and located above the winding rollers 3c and 3d.
In the conveying section of the conveyor belt 3a, the sheet S having the loop shape can be sucked onto the conveying surface of the conveyor belt 3a.

In the above accumulating device 90,
Since the suction force acts from below the sheet S having the loop shape conveyed by the conveyor 3, slipping between the conveyor belt 3a and the sheet S during the conveyance can be prevented and the sheet can be more stably conveyed. At the same time, the sheet S having the loop shape can be compressed in the transport direction, so that the storage amount can be increased.

FIG. 11 shows an eleventh embodiment of the accumulation apparatus according to the present invention. In the figure,
Reference numeral 100 indicates an accumulation device. In the figure, parts common to those of the accumulating device 90 of the ninth embodiment are designated by the same reference numerals, and description thereof will be omitted.

The accumulating apparatus 100 further blows compressed air onto the back surface of the sheet S which has passed the sheet suction section by the suction means 2c of the conveyor 2 in addition to the accumulating apparatus 90 of the ninth embodiment. It is provided with a sprayer (air supply means) 9.

The sprayer 9 is provided with a nozzle 9a having a slit-shaped discharge port wider than the sheet S, and a compressor (not shown) for supplying compressed air to the nozzle 9a. The nozzle 9a is arranged so that its width direction is perpendicular to the conveyance direction and its discharge direction is perpendicular to the conveyor 3, and the air compressed by the compressor is sucked by the suction means 2c to suck the sheet. The sheet passing through the section is transferred to the conveyor 2
It can be sprayed onto the back surface of the sheet S transferred from the conveyor 3 to the conveyor 3.

In the above accumulating apparatus 100, after the sheet S has passed through the sheet suction section by the suction means 2c, the sprayer 9 blows compressed air to the back surface of the sheet S to convey the conveyor belt. Since the sheet S can be forcibly peeled from the 2a, the conveyed sheet S does not wind around the conveyor belt 2a, and the sheet S can be delivered from the conveyor 2 to the conveyor 3 more stably. .

The accumulating device according to the present invention is not limited to the above-mentioned first to eleventh embodiments, and its size, shape and the like can be changed as appropriate without departing from the object of the present invention. You can

For example, the accumulating device of the present invention is
Like the accumulators of the first to eighth embodiments, it is preferable to dispose the conveyor 2 substantially vertically and to dispose the conveyor 3 or the conveyor 5 horizontally, but as shown in FIG. Inclining the conveyor 2 with its conveying surface facing upward,
The angle θ with the conveyor 3 or the conveyor 5 is 45
By setting the angle to 135 °, preferably 90 ° to 120 °, it is possible to obtain the same effect as that of the first to seventh embodiments.

Further, in the accumulating apparatus of the present invention, it is preferable to arrange the conveyor 2 in parallel with the conveyor 3 as in the accumulating apparatus of the ninth to eleventh embodiments, but as shown in FIG. , Above conveyor 3
Is appropriately slid, and the conveyor 2 is inclined with its conveying surface facing downward so that the angle φ formed between the conveyor 2 and the conveyor 3 is 135 ° to 225 °, preferably 135 ° to 180 °. By setting, it is possible to obtain the same effect as that of the accumulating device of the eighth to tenth embodiments.

Further, like the accumulating apparatus of the eighth to tenth embodiments, the conveying surface is directed downward and the first
In the accumulating device of a mode in which the conveyor and the second conveyor are rotated in opposite directions, the accumulating device 30 of the fourth embodiment is provided on the first conveyor, for example.
In such a case, by disposing the separation belt, the sheet is forcibly peeled from the first conveyor, or, for example, as in the accumulating device 50 of the sixth embodiment, the second conveyor is provided. When pulling up the sheet conveyed by
A second air supply unit for blowing compressed air may be provided on the back surface of the sheet to suppress the occurrence of wrinkles and meandering of the sheet.

[0083]

According to the accumulating apparatus of the present invention, the following effects can be obtained. Claim 1 or 2
According to the accumulating device described in (1), it is possible to impart a regular loop shape to the soft sheet and stably store and convey the sheet. Also, the first of the first conveyor
Since the sheet is conveyed while being sucked by the suction means, the stability of the sheet conveyance is not lost even when a small external force such as an electrostatic force is applied, and the winding of the sheet as in the conventional case can be suppressed. Further, since the device is not large in size, a large amount of sheets can be stored in a small space.

According to the accumulating device of the third aspect, in addition to the effect of the accumulating device of the first or second aspect, the lower part of the sheet provided with the loop form conveyed by the second conveyor is added. By applying a suction force to prevent slipping between the second conveyor belt and the sheet during conveyance, it is possible to convey the sheet more stably and at the same time compress the sheet having the loop shape in the conveying direction. Therefore, the storage amount can be increased.

According to the accumulating apparatus of the fourth aspect, in addition to the effect of the accumulating apparatus of the first aspect, the accumulating apparatus having the conveying speed V2 lower than the conveying speed V3 from the third conveyor having the conveying speed V3 is used. Since the sheet with the loop form is transferred to the two conveyors,
The sheet is compressed in the conveying direction, and the storage amount can be increased.

According to the accumulating apparatus of the fifth aspect, in addition to the effect of the accumulating apparatus of any of the first to fourth aspects, the separating belt causes the first conveyor to move at the lower end of the first conveyor. Since the sheet is forcibly peeled off from the first conveyor belt, the conveyed sheet does not wind around the first conveyor belt. Therefore, it is possible to more stably deliver the sheet from the first conveyor to the second or third conveyor.

According to the accumulating apparatus of the sixth aspect, in addition to the effect of the accumulating apparatus of any of the first to fourth aspects, the sheet transferred from the first conveyor to the second conveyor is By blowing compressed air on the back surface by the first air supply means, the sheet is forcibly peeled off from the first conveyor belt at the lower end portion of the first conveyor, so that the conveyed sheet is transferred to the first conveyor belt. It never wraps around. Therefore, it is possible to more stably deliver the sheet from the first conveyor to the second or third conveyor.

According to the accumulating apparatus of the seventh aspect, in addition to the effect of the accumulating apparatus of any of the first to sixth aspects, the sheet to be pulled up by the conveying means is reverse to the pulling direction. By blowing compressed air along the surface of the sheet in a direction, a negative pressure is generated on the side of the sheet on which compressed air is blown, and a desired tension can be applied to the sheet by its absorbing force, In addition, it is possible to generate a function of flexing in the direction following the flow of compressed air, and as a result, suppress the generation of wrinkles, folds and meandering of the sheet, and stably supply the sheet to the post-process device. You can

According to the accumulating device of the eighth or ninth aspect, in addition to the effect of the accumulating device of the first aspect, the sheet is a sheet obtained by the first suction means of the first conveyor. After passing through the suction section, the sheet hangs down and is conveyed downward due to its own weight, and is delivered to the second conveyor. At this time, the transfer speed V1 of the first conveyor and the transfer speed V2 of the second conveyor, which is lower than the transfer speed V1, are set to the speed ratio V
By changing 2 / V1, it is possible to give the sheet transferred from the first conveyor to the second conveyor a regular loop form on the second conveyor belt.

According to the accumulating device of the tenth aspect of the present invention, in addition to the effect of the accumulating device of the eighth or ninth aspect, a loop form conveyed by the second conveyor is provided. Since the suction force acts from below the sheet, slippage between the second conveyor belt and the sheet during conveyance can be prevented, and the sheet having the loop shape can be more stably conveyed, and at the same time, the loop shape can be improved. The applied sheet can be compressed in the transport direction to increase the storage amount.

According to the accumulating device of the eleventh aspect of the present invention, in addition to the effect of the accumulating device of the tenth aspect, the sheet passes through the suction section of the sheet by the first suction means. After that, the compressed air is blown to the back surface of the sheet by the air supply unit, so that the sheet can be forcibly peeled from the first conveyor belt at the lower end portion of the first conveyor, so that the conveyed sheet is first The sheet can be delivered from the first conveyor to the second conveyor more stably without being wound around the one conveyor belt.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a first embodiment of an accumulating device according to the present invention.

FIG. 2 is a schematic side view showing a second embodiment of the accumulation device according to the present invention.

FIG. 3 is a schematic side view showing a third embodiment of the accumulating device according to the present invention.

FIG. 4 is a schematic side view showing a fourth embodiment of the accumulation device according to the present invention.

FIG. 5 is a schematic side view showing a fifth embodiment of the accumulation apparatus according to the present invention.

FIG. 6 is a schematic side view showing a sixth embodiment of the accumulation apparatus according to the present invention.

FIG. 7 is a partially cutaway perspective view showing a seventh embodiment of the accumulation apparatus according to the present invention.

FIG. 8 is a partially cutaway perspective view showing an eighth embodiment of the accumulation device according to the present invention.

FIG. 9 is a schematic side view showing a ninth embodiment of the accumulation apparatus according to the present invention.

FIG. 10 is a schematic side view showing a tenth embodiment of the accumulation apparatus according to the present invention.

FIG. 11 is a schematic side view showing an eleventh embodiment of the accumulation device according to the present invention.

FIG. 12 is a schematic view showing the positional relationship between the first conveyor and the second conveyor in the accumulation apparatus according to the present invention.

FIG. 13 is a schematic view showing the positional relationship between the first conveyor and the second conveyor in the accumulation apparatus according to the present invention.

[Explanation of symbols]

 1 Accumulator 2 Conveyor (1st conveyor) 2a Conveyor belt (1st conveyor belt) 2b Winding drive means (1st winding drive means) 2c 1st suction means 3 Conveyor (2nd conveyor) 3a Conveyor belt (1st conveyor) 2 conveyor belt 3b winding driving means (second winding driving means) 3e second suction means 4 feeding roller (conveying means) 5 conveyor (third conveyor) 5a conveyor belt (third conveyor belt) 5b winding driving means (Third winding drive means) 6 Separation belt 7 Sprayer (first air supply means) 8 Sprayer (second air supply means) 9 Sprayer (air supply means)

Claims (11)

[Claims] 1. A first conveyor that conveys a sheet supplied from a supply unit downward at a conveying speed V1, and the above-mentioned sheet that is horizontally arranged below the first conveyor and conveyed by the first conveyor. A second conveyor for carrying in a substantially horizontal direction at a carrying speed V2 lower than the carrying speed V1, wherein the first conveyor has an air-permeable endless first conveyor belt and the first conveyor belt. First winding driving means for rotating and driving the first conveyor belt wound and wound in the longitudinal direction, and first suction means for sucking the conveyed sheet through the first conveyor belt to its conveying surface. The second conveyor is provided with the endless second conveyor belt, the second conveyor belt is wound around the second conveyor belt, and the second conveyor bell is wound around the second conveyor belt. Accumulating device, wherein a and a second turn of the rolling drive means for rotating the drive in the longitudinal direction. 2. The ratio V2 / V1 of the conveying speed is 0.1 to 0.1.
The accumulating device according to claim 1, wherein the accumulating device is 0.5. 3. The second conveyor belt has air permeability, and the second conveyor comprises second suction means for sucking a sheet to be conveyed to the conveyance surface through the second conveyor belt. The accumulation apparatus according to claim 1 or 2, which is characterized. 4. A third conveyor is disposed between the first conveyor and the second conveyor in series and horizontally with the second conveyor, and the third conveyor has an air-permeable endless shape. Of the third conveyor belt, and a third winding drive means for rotating the first conveyor belt and rotationally driving the wound third conveyor belt in the longitudinal direction, and the third conveyor belt. Is configured to convey a sheet conveyed at a conveying speed V1 at a conveying speed V3 between the conveying speed V1 and the conveying speed V2 and deliver it to the second conveyor. The accumulation device according to 1. 5. An endless belt which can be rotationally driven independently of the first conveyor belt and is narrower than the first conveyor belt between the sheet conveyed by the first conveyor and the first conveyor belt. The accumulating device according to any one of claims 1 to 4, wherein a plurality of the separating belts of (1) are arranged in a wound manner. 6. A first air supply means for blowing compressed air to the back surface of the sheet transferred from the first conveyor to the second conveyor or the third conveyor, the first air supply means comprising: The accumulating device according to any one of 4 above. 7. Conveying means for pulling up and conveying the sheet conveyed by the second conveyor, and compressed air in a direction opposite to the raising direction of the sheet along the surface of the sheet pulled up by the conveying means. Second to blow away
7. An air supply unit is provided, and the air supply unit is provided.
The accumulator according to any one of 1. 8. The accumulating apparatus according to claim 1, wherein the first conveyor is arranged above the second conveyor with its conveying surface facing downward. 9. The first conveyor and the second conveyor rotate in opposite directions to each other, and the ratio V2 / V1 of the transport speed v1 of the first conveyor and the transport speed V2 of the second conveyor is 0. It is 03-0.5, The accumulation apparatus of Claim 8 characterized by the above-mentioned. 10. The second conveyor belt has air permeability, and the second conveyor comprises second suction means for sucking a sheet to be conveyed to the conveyance surface through the second conveyor belt. The accumulating device according to claim 8 or 9, which is characterized in that. 11. An air supply unit for blowing compressed air to the back surface of the sheet that has passed through the first suction unit of the first conveyor, is provided.
The accumulating device according to any one of 0.