JP3383160B2 - Sheet collection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collecting device capable of compactly collecting a plurality of sheets that are individually and sequentially conveyed.

[0002]

2. Description of the Related Art In recent years, in an image recording apparatus for plate making,
Since the developing process can be omitted, a composite film in which a release sheet is adhered to a base sheet on which a coloring material is formed has been used. When a composite film of a predetermined length is wound around an exposure drum and exposed to laser light, the coloring material portion irradiated with laser light loses its binding force with the base sheet and moves to the release sheet side together with the adhesive layer. By peeling off the release sheet, a base sheet on which an image is recorded, that is, an image forming sheet is obtained.

Not limited to the release sheet of the composite film,
For example, even in DDCP (digital direct color puller), there are ink sheets that are unnecessary after exposure, and these unnecessary sheets are collected from the base sheet side, collected, and discarded.

To collect unnecessary sheets, a collecting area such as a trash box is usually provided outside a processing device such as an image recording device, and the unnecessary sheets conveyed from the processing device are dropped into the collecting area.
Be recovered. It has also been attempted to rotatably support a ring-shaped guide, and while rotating the guide, convey and collect an unnecessary sheet by conveying the unwanted sheet inside.

[0005]

However, providing a recovery area such as a dustbin requires a space outside the processing apparatus, which increases the installation space for the apparatus. Moreover, since the unnecessary sheets are simply dropped, the unnecessary sheets are bulky in the collection area. Therefore, in order to increase the collection amount, the collection area must be enlarged accordingly. Further, in the method of collecting while winding the inside of the ring-shaped guide, a trouble such as a jam is likely to occur at the time of collection, and the collection amount is limited to several sheets, which is not practical.

Further, the sheets to be collected are not limited to the above-mentioned unnecessary sheets, and it is desired to easily and compactly collect various sheets such as photographs and printed matters.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a sheet collecting apparatus capable of easily and compactly collecting a large number of sheets conveyed discontinuously.

The sheet collecting apparatus of the present invention is a sheet collecting apparatus for winding and collecting a plurality of sheets that are individually conveyed in sequence, and includes a rotatable winding shaft to which the leading end of the frontmost sheet is fixed. after the preceding sheet to the winding inner surface of the rear end overlapping portions of the preceding sheet wound around the winding shaft
The sheet superimposing means for superposing the leading edge of the succeeding sheet conveyed from the sheet and the succeeding sheet in parallel with the rotation of the winding shaft.
When the leading edge is rolled up, the trailing edge of the preceding sheet is overlapped
Carry it out to the take-up shaft side while it is clamped together with the buckle.
And a feed roller .

According to this collecting device, when the front end of the frontmost sheet is fixed to the winding shaft, the winding shaft rotates and the winding of the frontmost sheet is started. When the winding of the preceding sheet is almost completed, the leading edge of the succeeding sheet is superposed on the winding inner surface of the trailing end superposing section of the preceding sheet by the sheet superimposing means. After that, in parallel with the rotation of the take-up shaft, the conveying roller causes the succeeding sheet to be taken up when the leading end of the succeeding sheet is taken up.
Rear weight of the sending to the take-up shaft side while sandwiching with the rear end overlapping portions, the distal end portion of the succeeding sheet of the preceding sheet
It is taken up by the take-up shaft while being sandwiched between the joints. Therefore, it is possible to easily and compactly collect and collect a large number of sheets that are individually and sequentially conveyed.

According to a second aspect of the present invention, the winding shaft is provided with a pair of winding rods, and a winding rod fixing member that opposes the winding rods so as to be disassembled and assembled with a gap therebetween. By doing so, after winding a large number of sheets around the winding rod, the winding rod fixing member is set to the winding rod fixing release state, and the winding rods are brought close to each other so as to narrow the gap between the winding rods. And the outer diameter of the winding rod is reduced, so that the winding rod can be easily removed from the wound winding sheet, and the winding sheet can be easily collected from the winding rod and then the winding shaft. You can

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1, a sheet collecting apparatus according to an embodiment includes a pair of upper and lower first conveying rollers 10 and 10 for nipping a sheet 1 between rollers to carry it out to a downstream side.
A and second conveying rollers 20, 20A, and a winding means 30 provided via a movable guide 21 on the downstream side of the second conveying rollers 20, 20A.
Between the A and the second conveyance rollers 20, 20A, the succeeding sheet 1A is formed at the trailing edge overlapping portion W (see FIG. 5) of the preceding sheet 1.
A rotation guide 50 for superposing the front end portions (see FIG. 5) is attached. The movable guide 21 is configured to be rotatable around its rear end, and its front end is biased toward the winding shaft 31 by a spring or the like. The distance between the second conveying rollers 20 and 20A and the winding means 30 is such that when the leading edge of the succeeding sheet 1A is wound by the winding means 30, the trailing edge of the preceding sheet 1 is the second conveying roller 20. , 20A so that the sheet is sandwiched between the preceding sheet 1 and the succeeding sheet 1
It is set shorter than the overlap margin with A.

The first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A can sandwich the sheet 1 (1 is used as a reference when the preceding sheet and the succeeding sheet are not particularly distinguished) between the rollers. As described above, one of the conveyance rollers 10 and 20 (lower side in the illustrated example) has its rotation shaft fixed in its installation position, and the other conveyance rollers 10A and 20A have their rotation axes fixed with respect to the conveyance rollers 10 and 20. It is movable in the radial direction on the plane shown in the drawing, and is urged by the spring or its own weight toward the fixed conveying rollers 10 and 20. The fixed conveying rollers 10 and 20 are driven by a drive motor so that the rotation of the conveying rollers 10 and 20 can be freely stopped. In this case, the other conveying rollers 10A and 20A are driven and rotated by the sheet 1. Further, the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A are rotationally driven at the same peripheral speed.

In order to carry the sheet 1 more reliably, the driving side carrying rollers (first carrying rollers 10, 10) are used.
When the A and the second transport rollers 20 and 20A are not particularly distinguished, they are simply referred to as transport rollers. ), A gear or a belt conductive member may be attached to both the transport rollers so as to transmit the rotation from the driven roller to the transport rollers. Further, a lining layer may be formed on the outer peripheral surface of the conveying roller by coating with a material such as rubber having a large friction coefficient.

The winding means is provided between a winding shaft 31 which is conductively connected to a torque motor and can be freely stopped from rotating, and the sheet 1 wound around the winding shaft 31 side. And a pressing roller 32 that is urged so as to move toward and away from the take-up shaft 31 or the take-up sheet taken up by the take-up shaft 31 in the radial direction. The pressing roller 3
A lining layer may be formed on the outer peripheral surface of 2 by coating with a material such as rubber to prevent slippage, as in the case of the transport roller.

As shown in FIG. 2, the winding shaft 31 includes a pair of winding rods 34, 34 having an arcuate cross section, and the winding rods 34, 34.
A winding rod fixing member 35 is disposed so as to face each other so as to be freely disassembled and assembled with a predetermined gap therebetween. The winding rod fixing member 35 has a space restricting portion 36 inserted between the winding rods 34, 34 so that the outer peripheral surfaces of the winding rods 34, 34 form a part of a cylindrical surface, and Shaft 37 connected to the rotary drive source
Shaft end member 38 having the shaft end member 38 and the winding rod 3
A sleeve 40 that is externally mounted on the sleeves 4, 34, and the sleeve 40
Is provided with a fixing screw member 39. A split groove is formed in the sleeve 40, whereby the sleeve 40 is detachably mounted on the shaft end member 38 and the winding rods 34, 34, and these members are integrated by tightening the fixing screw member 39. On the other hand, loosen the fastening of the fixing screw member 39,
Remove the sleeve 40 and attach the shaft end member 38 to the winding rods 34, 34.
By pulling it axially from between the winding rods 34, 3
The outer shape can be reduced by making the intervals of 4 close to each other.

A rotation guide 5 attached between the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A.
0 has upper and lower surfaces formed by guide plates with respect to the sheet conveying direction, and a rotary shaft (not shown) is provided in the center thereof, and the rotary shaft is rotated around the rotary shaft by a rotation driving means such as a drive motor. It can be stopped freely and can be held at the stop position.

Next, the operation of the sheet collecting device will be described.

When the first first sheet is wound, the first conveying rollers 10, 10A and the second conveying rollers 20,
20A is rotated so that the leading end of the sheet 1 conveyed from the first conveying rollers 10 and 10A via the rotation guide 50 is carried out from the second conveying rollers 20 and 20A, and then the sheet 1 is conveyed via the movable guide 21. The tip portion is conveyed to the gap between the winding rods 34, 34 of the winding shaft 31. Then, as shown in FIG. 1, while taking out the sheet 1 by the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A, the winding shaft 31
Rotate and wind up the sheet 1. At this time, the winding shaft 31
Is torque-controlled by the torque motor, the rotation is stopped when a torque exceeding a predetermined torque is applied, and the seat 1
Is wound up according to the amount of delivery from the second delivery rollers 20, 20A.

The trailing edge of the preceding sheet 1 is the first conveying roller 1.
0, 10A, as shown in FIG. 3, the rotation guide 5
When the trailing edge overlapping portion W of the preceding sheet 1 is left in 0, the first transport rollers 10 and 10A, the second transport roller 2
The rotation of 0 and 20A is stopped, and next, as shown in FIG.
The rotation guide 50 is rotated 180 degrees. At this time, the trailing edge overlapping portion W of the preceding sheet 1 left in the rotation guide 50 is in a state of hanging from the second transport rollers 20 and 20A. As for the timing of stopping the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A, the trailing edge of the preceding sheet 1 is set to the first by the appropriate detector such as a photo sensor.
It suffices to detect the time when the sheet passes the conveying rollers 10 and 10A and stop the driving of the conveying rollers after a lapse of a predetermined time so that the overlapping portion W of the preceding sheet 1 remains in the rotation guide 50.

The second conveying rollers 20 and 20A stand by in that state, while the first conveying rollers 10 and 10A sandwich the succeeding sheet 1A and feed it into the rotation guide 50, and the leading end of the succeeding sheet 1A is the second conveying direction. When it reaches the rollers 20, 20A, as shown in FIG.
Is rotated and the leading edge of the succeeding sheet 1A is carried out in a state where the trailing edge overlapping portion W of the preceding sheet 1 is overlapped between the second conveying rollers 20 and 20A.

As the trailing edge overlapping portion W of the preceding sheet 1 carried out from the second conveying rollers 20 and 20A is wound up, the succeeding sheet 1A is also conveyed to the winding means 30 side, as shown in FIG. The leading edge of the preceding sheet 1 is rolled up inside the trailing edge overlapping portion W of the preceding sheet 1. At this time, the portion near the trailing end of the preceding sheet 1 is still sandwiched by the second transport rollers 20 and 20A, and the winding shaft 31 does not idle.

When the succeeding sheet 1A is wound up and the state shown in FIG. 3 is restored again, the rotations of the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A are stopped, and thereafter, the succeeding sheets are continuously taken up. Then, the same winding operation is repeated until the winding sheet 3 has a predetermined winding outer diameter.

The maximum take-up outer diameter of the take-up sheet 3 is preferably set to such a dimension that the outer peripheral length of the take-up sheet excluding the overlapping portion of one sheet is set. A part of the sheet is always held between the outer peripheral surface of the winding sheet 3 by the pressing roller 32, and the sheet can be stably wound. Of course, an appropriate winding guide may be arranged on the outer peripheral portion of the winding sheet 3. A detector for detecting the maximum outer diameter of the winding sheet 3 is provided,
Depending on the detection signal, the winding sheet 3 may be collected and displayed, or the winding may be stopped. Further, the number of wound sheets may be counted and the collection display may be performed when the number of wound sheets is reached.

When the winding sheet has the maximum outer diameter, the rear end overlapping portion of the final sheet is fixed to the outer peripheral surface of the winding sheet with an adhesive tape or the like, and then the rotation driving portion is connected to the winding shaft 31. And the take-up sheet together with the take-up shaft 31 is removed from the take-up means 30. Then, when the sleeve 40 and the shaft end member 38 (see FIG. 2) are removed, the winding rods 34, 34
Can approach the center side and can be easily pulled out from the center of the winding sheet.

As shown in FIG. 7, a swing guide 51 having a guide plate only on the lower surface and swinging about the central portion is used, and the right end portion of the swing guide 51 in the figure is swung downward. The rear end overlapping portion W of the preceding sheet 1 placed on the swing guide 51 may be discharged by moving the sheet.

Further, in the above-described embodiment, as shown in FIG. 6, in order to prevent the take-up shaft 31 driven by the torque motor from idling, when the leading end of the succeeding sheet 1A is taken up, The distance between the second conveying rollers 20, 20A and the winding means 30 is shorter than the length of the overlapping portion W so that the rear end of the end overlapping portion W is sandwiched by the second conveying rollers 20, 20A. Both of them are arranged in the same manner, but the rotation speed of the winding shaft 31 is controlled so that the winding speed of the winding shaft 31 becomes the same as the sheet conveying speed of the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A. Then, there is no problem even if the trailing edge of the preceding sheet 1 is carried out from the second transport rollers 20 and 20A before the leading edge of the succeeding sheet 1A is wound up. For controlling the rotation speed of the winding shaft 31, a rotation speed detector is provided on the pressing roller 32, and the peripheral speed of the pressing roller 32 is set to the first conveying rollers 10 and 10A and the second conveying rollers 20 and 20A.
The rotation speed of the drive motor of the winding shaft 31 may be controlled so as to match the conveyance speed of the above.

FIG. 8 shows another embodiment of the sheet collecting apparatus, in which the fixed guide 52 and the movable guide 53 attached to the upper part of the fixed guide 52 constitute the sheet superimposing means. The other structure is the same as that of the embodiment of FIG.

The movable guide 53 is divided along the conveyance direction so as to be openable and closable, and the movable guide 53 in the closed state supports and moves the succeeding sheet 1A discharged from the first conveyance rollers 10 and 10A. By opening the guide 53, the front end of the once-supported succeeding sheet 1A can be placed on the lower fixed guide 52.

According to this embodiment, when the trailing edge overlapping portion W of the preceding sheet 1 is left on the fixed guide 52, the first conveying rollers 10 and 10A and the second conveying roller 2 are arranged.
The rotation of 0 and 20A is stopped, and the process waits until the succeeding sheet 1A is conveyed. When the succeeding sheet 1A is conveyed,
As shown in FIG. 8, the first transport rollers 10 and 10A are rotated and carried out onto the movable guide 53.

The leading edge of the succeeding sheet 1A is the second transport roller 2
When the vicinity of 0, 20A is reached, the first transport roller 1
0A and 10A are temporarily stopped, the movable guide 53 is opened, and the leading end of the succeeding sheet 1A on the movable guide 53 is fixed to the fixed guide 5.
2 is dropped onto the rear end overlapping portion W of the preceding sheet 1 on the upper side 2. As a result, the trailing edge overlapping portion W of the preceding sheet 1
The leading end portion of the succeeding sheet 1A is superposed on the upper side of the first conveyance roller 10, 10A and the second conveyance roller 20, 20A.
By simultaneously rotating the first sheet 1 and the second sheet 1A, the preceding sheet 1 and the succeeding sheet 1A are conveyed to the winding means 30 side in a superposed state and are wound around the winding shaft 31 in the same manner as in the previous embodiment.

That is, in the previous embodiment, the conveying line of the trailing edge overlapping portion of the preceding sheet is moved so that the leading end portion of the succeeding sheet is overlapped with the winding inner side of the preceding sheet. The conveyance line at the leading end of the sheet is moved so that the sheet is superposed on the inside of the winding of the preceding sheet.

It goes without saying that the present invention is not limited to the above embodiment, and within the scope of the invention as claimed,
The sheet to be conveyed can be modified and embodied in various forms, regardless of its name, and includes a film. Further, the sheet is not limited to an image recording sheet, and various photographs, printed matter, etc. It can also be applied to the sheet of.

[0033]

According to the sheet collecting apparatus according to the present invention, by a sheet coming sequentially conveyed individually, allowed inside the winding of the rear end overlapping portions of the preceding sheet overlapping the leading portion of the succeeding sheet, conveying The trailing sheet is moved to the leading edge by a roller
When the sheet is wound up with the trailing edge overlapping part of the preceding sheet
Since it is conveyed to the winding shaft side and wound up while being pinched by the waist , the leading end of the succeeding sheet does not rotate without the winding shaft spinning.
The winding shaft is sandwiched between the trailing edge overlapping parts of the preceding sheet
Can be rolled up. Therefore, the individually conveyed sheets can be continuously wound, and a large number of sheets can be reliably and stably wound and collected in a compact manner. Further, by using the winding shaft according to the second aspect, the winding shaft can be easily removed from the winding sheet after winding, and the winding sheet can be easily collected.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory diagram showing an overall configuration of a sheet collecting apparatus according to an embodiment.

FIG. 2 is a sectional view (A) of a main part and a sectional view (B) taken along the line A showing an end structure of a winding shaft.

FIG. 3 is a cross-sectional explanatory view of the sheet collecting device in a state where the trailing edge overlapping portion of the preceding sheet is left inside the rotation guide.

FIG. 4 is a cross-sectional explanatory view of the sheet collecting device showing a state in which the rotation guide is rotated and the trailing edge overlapping portion of the preceding sheet in the rotation guide is discharged outside the guide.

FIG. 5 is a cross section of the sheet collecting device showing a state immediately before being conveyed to the winding device side in a state in which a front end portion of a succeeding sheet conveyed in the vicinity of a second conveying roller is superposed on a rear end overlapping portion of a preceding sheet. FIG.

FIG. 6 is a cross-sectional explanatory view of the sheet collecting device showing a state in which the leading end portion of the succeeding sheet is superposed on the trailing end superposing portion of the preceding sheet and is conveyed from the second conveying roller to the winding device side.

FIG. 7 is a cross-sectional explanatory view showing an overall configuration of a sheet collecting device provided with a swing guide as a sheet stacking unit.

FIG. 8 is a cross-sectional explanatory view showing an overall configuration of a sheet collecting apparatus according to another embodiment.

[Explanation of symbols]

1 sheet (preceding sheet) 1A Subsequent sheet 10, 10A First transport roller 20, 20A Second transport roller 30 winding means 31 winding shaft 34 Winding Rod 50 Rotation guide (sheet superposition means) 51 Swing guide (sheet stacking means) 52 Fixed guide (53 and sheet polymerization means) 53 movable guide (sheet polymerization means together with 52)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshimitsu Funayoshi 5 No. 5 Higashikujo Minami Ishida-cho, Minami-ku, Kyoto City Dainichi Screen Manufacturing Co., Ltd. Inside the Jujo Plant (72) Mamoru Fujimoto Higashi-kujo, Minami-ku, Kyoto 5 Minami-Ishida-cho Dainichi Honshu Screen Mfg. Co., Ltd. Inside the Jujo Works (56) Reference JP-A-2-75563 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65H 29 / 51

Claims (2)

(57) [Claims] 1. A sheet collecting device for winding and collecting a plurality of individually conveyed sheets, wherein a rotatable winding shaft to which the leading end of the frontmost sheet is fixed, and a periphery of the winding shaft. Trailing edge weight of the leading sheet wrapped around
It is conveyed after the preceding sheet to the winding inner surface of the mating section .
The sheet superimposing means for superposing the leading ends of the succeeding sheets and the leading end of the succeeding sheet being wound in parallel with the rotation of the winding shaft .
With the trailing edge overlapping part of the preceding sheet
A sheet collecting device , comprising: a conveying roller that sends the sheet to the winding shaft side in a sandwiched state . 2. The sheet collecting device according to claim 1, wherein the winding shaft includes a pair of winding rods, and a winding rod fixing member that opposes the winding rods so as to be disassembled and assembled via a gap.