JP3604262B2 - Sheet receiving mechanism and sheet storage device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a sheet receiving mechanism and a sheet storage device for a sheet conveyed in a seated state, and more particularly to sheet reception when a sheet is conveyed in a direction different from a receiving direction immediately after sheet reception.
[0002]
[Prior art]
Conventionally, as this type of sheet receiving mechanism, one shown in FIG. 8 has been known (utility model registration No. 2533620). This means that the upstream unit 1 and the downstream unit 2 are arranged side by side with a gap therebetween, and one of the units 1 has a discharge roller 3 for discharging the sheet S and a transport path 4. The other unit 2 has a receiving port 5 for receiving the sheet S, a conveying roller 6, and a conveying path 7. Further, a ridge 8 for stiffening the sheet S at the time of discharge is provided in the transport path 4 of the upstream unit 1 in the discharge direction, and the sheet S is guided to the receiving port 5 of the downstream unit 2. For this purpose, inclined surfaces 9a and 9b are provided vertically. Therefore, when the sheet S is discharged from the upstream unit 1, when the sheet S passes through the transport path 4, the ridge 8 hits and the sheet S is streaked, so that the sheet S is stuck. When the sheet S is discharged, the tip of the sheet is prevented from hanging down, and the sheet S can be smoothly received in the receiving port 5 of the downstream unit 2.
[0003]
[Problems to be solved by the invention]
However, in the above-mentioned conventional sheet receiving mechanism, although the sheet is smoothly received from the upstream unit 1 to the downstream unit 2, for example, as shown in FIG. If the transport path 7, such as changes about 90 degrees from the horizontal to the vertical direction, the sheet S abnormal noise occurs then together to waist with part is suddenly stretched when is folded downwardly, the seat There was a problem that damage was left on S.
[0004]
Accordingly, the present invention provides a method of receiving a perforated sheet without causing a jam and preventing abnormal sound generation from the sheet and damage to the sheet even if the direction of the conveyance path changes suddenly immediately after the sheet is received. The purpose is to prevent it effectively.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a sheet receiving mechanism according to claim 1 of the present invention is provided with a receiving means for receiving a sheet conveyed in a tied state, and a stiffening removing means for removing stiffening of the received sheet. with the door, together with the waist with removal means is disposed between the conveying rollers for conveying the sheet discharging roller and hips with sheets removed for conveying the sheet to the receiving means, the sheet characterized Rukoto a protruding portion located on the downstream side of the inclined surface and said protruding from the straight line connecting the nip point of the sheet in the sheet discharge rollers and the transport rollers and the inclined surface for guiding the conveyance roller .
[0006]
Also, in the sheet receiving mechanism according to claim 2 of the present invention, the sheet receiving means includes an inclined guide surface that gradually narrows toward a sheet conveying roller to guide the sheet reception, and the guide surface includes the inclined guide surface. A waist removing means is provided so as to project therefrom.
[0007]
Further, in the sheet receiving mechanism according to claim 3 of the present invention, the guide surface includes an upper guide surface and a lower guide surface, and the waist removing means protruding from the lower guide surface has an inclined surface. with tilted at substantially the same angle and the lower guide surface of the receiving means, and characterized in that protrudes upward from the straight line the top of the inclined surface connecting the nip point of each sheet in said sheet discharge roller and the conveying roller I do.
[0008]
Further, in the sheet storage device according to claim 4 of the present invention, the receiving opening for the stiffened sheet discharged from the image forming apparatus, the sheet stiffening removing member installed near the receiving opening, and the stiffening are removed. Sheet conveying means for conveying the sheet conveyed in a direction different from the receiving direction, and a bin for accommodating the sheet conveyed by the sheet conveying means, wherein the waist removing member conveys the sheet to the receiving port. And a slanted surface for guiding the sheet to the conveying roller and each of the discharging roller and the conveying roller. and a protruding portion located on the downstream side of and the inclined surface protruding from the straight line connecting the nip point of the sheet, characterized in Rukoto.
[0009]
Further, in the sheet storage device according to the fifth aspect of the present invention, the receiving port for the stiffened sheet discharged from the image forming apparatus, the stiffening removing member for the sheet installed near the receiving port, and the stiffening are removed. Sheet conveying means for conveying the sheet, which has been removed, along a sheet conveying path, and a sheet conveying means for conveying the sheet from which the waist has been removed, and a vertical movement along the sheet conveying path. An indexer provided so as to be able to be provided, and a plurality of bins for accommodating sheets discharged from the indexer, wherein the waist removing member removes a paper discharging roller and a waist for conveying a sheet to the receiving port. together it is arranged between the conveying roller for conveying been sheets, each sheet Knitting of in the discharge roller and the conveying roller and the inclined surface for guiding the conveying roller of the sheet Characterized Rukoto a protruding portion located on the downstream side of the projecting the straight line and the inclined surface connecting the points.
[0010]
Further, in the sheet storage device according to claim 6 of the present invention, the sheet receiving port includes an inclined guide surface that gradually narrows the receiving port toward the sheet conveying means, and the sheet is seated on the guide surface. It is characterized in that a removing member is protruded.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an embodiment of a sheet receiving mechanism according to the present invention. In this embodiment, the image-formed sheet S discharged from the copying machine main body 11 is received and stored by the sorter 12. The sheet receiving mechanism 20 of the sorter 12 includes a receiving port 14 for receiving the sheet S conveyed by the paper discharge roller 13 of the copying machine main body 11 and a conveying roller for nipping the received sheet S and conveying it to the downstream side. And a flapper 17 disposed near the downstream side of the transport roller 15 and for rapidly changing the direction of the transport path 16 from a substantially horizontal direction to a vertical direction. The receiving port 14 is gradually narrowed from the inlet side toward the back, and forms inclined guide surfaces 18 and 19 for guiding to the transport roller 15.
[0012]
As shown in FIG. 2, the sheet S is attached to the sheet S with respect to the sheet ejection rollers 13 of the copying machine main body 11 arranged in a plurality of directions perpendicular to the sheet ejection direction of the sheet S. By providing the streak-shaped large diameter portion 25 on one end side, the seat S can be attached to the seat. That is, when the sheet S is discharged while being nipped by the sheet discharging roller 13, the sheet S is strongly pressed by the large diameter portion 25, so that the crease groove 26 is formed only in the other portion compared to other portions, and Have a wavy shape, and these will give the seat S a stiffness. By waving on the sheet S, the tip of the sheet is prevented from sagging when the sheet is discharged, and the sheet S can be smoothly received in the receiving port 14 of the sorter 12.
[0013]
In the sheet receiving mechanism 20 of the present invention, the stiffening removing member 21 for the sheet S is attached to the lower guide surface 19 of the receiving port 14. As shown in FIGS. 1 and 3, the stiffening removing member 21 is a horizontally long plastic member having a substantially U-shaped cross section, and is configured to cover the lower guide surface 19 of the receiving port 14 along the width direction. And is fixed to the lower guide surface 19 with screws 22. Further, the waist removing member 21 has an upper surface 23 which is inclined at substantially the same angle above the lower guide surface 19, and as shown in FIG. Projecting above a straight line (two-dot chain line) 27 connecting the sheet nip point 13a of the sheet discharge roller 13 and the sheet nip point 15a of the transport roller 15 on the sorter 12 side. When the sheet S is nipped between the sheet discharge roller 13 and the transport roller 15, the top portion 24 gives tension to the sheet S, so that the streaks 26 and undulations on the sheet S can be gradually extended by stiffening. .
[0014]
The top portion 24 of the stiffening removing member 21 is formed at an acute angle as described above, as shown in FIG. 4, as shown in FIG. As described above, the tops 24a and 24b may be arranged in parallel in the front-rear direction of the conveyance. In the case of the arrangement in parallel, the number of times of removal of the stiffening increases, so that a further effect can be expected. Further, as shown in FIG. 6, a stiffening removing member 21 can be arranged on the upper guide surface 18 of the receiving port 14. Further, although not shown, the stiffening removing member 21 is described in accordance with the sheet discharge timing. A roller extending in the horizontal width direction may be provided so as to be able to protrude and retract from the straight line 27 or protrude from the straight line 27. The height position of the top 24 and the set position in the sheet conveyance direction are within the range of design items.
[0015]
As described above, by arranging the stiffening removing member 21 in the receiving port 14, the sheet S stiffened by the sheet discharging roller 13 is received by the conveying roller 15 as shown in FIGS. While being supplied into the mouth 14, the sheet S is pressed from below by the top 24 of the stiffening removing member 21, and tension is generated in the entire width direction of the sheet S, so that the groove 26 is gradually extended when passing through the top 24. At the same time, the waving in the sheet width direction is also eliminated. Therefore, even if the conveyance direction is changed by 90 degrees almost directly below by the flapper 17 disposed immediately downstream of the conveyance roller 15, since the sheet S has no waist, the sheet S is easily bent along the flapper 17, and the conventional method is used. Such abnormal noise does not occur and the sheet S is not damaged. Before the leading end of the sheet S sent out by the paper discharge roller 13 is nipped by the transport roller 15, the leading end of the sheet S is lifted up by the top 24 of the stiffening removing member. The direction is regulated by this and guided to the transport roller 15. When the sheet S is stiffened, the nip by the transport roller 15 tends to be insufficient when the sheet S is conveyed to the receiving port 14 by waving in the sheet width direction. Since the undulation in the width direction is removed, the sheet is nipped by the transport roller 15, so that the nip is also reliable and the sheet S can be received without causing a jam.
[0016]
Next, the overall structure of the sorter 12 using the above-described receiving mechanism will be described with reference to FIG. The sorter 12 is detachably connected to the discharge side of the copying machine body 11 described above. The copying machine main body 11 is mounted on a paper feeder 31 having a sheet cassette 30 and has a sheet path system 32 between the sheet cassette 30 and the paper discharge roller 13. Transfer / fixing means.
[0017]
As shown in this figure, the sorter 12 includes a base 34 having a caster 33 for movement attached to the bottom, a frame 35 erected on the base 34, and an upper part of the frame 35. And an automatic sorting mechanism 36 for executing a page alignment operation while transporting the received sheet.
[0018]
The automatic sorting mechanism 36 includes a bin 37 composed of a plurality of trays removably attached to the frame 35 and a sheet transport mechanism that transports the sheets received by the sheet receiving mechanism 20 vertically downward along the transport path 16. 38, and is movably provided along the conveyance path 16 and receives the sheet conveyed by the sheet conveyance mechanism 38 from above in a state where the sheet is stopped at a position corresponding to the remaining bins other than the top bin. An indexer 39 for changing the transport direction of the sheet so as to face the bin 37 facing the sheet and discharging the sheet, and a drive mechanism (not shown) for moving the indexer 39 to a position corresponding to the predetermined bin 37 are provided. .
[0019]
Therefore, in the sorter 12 having such a configuration, when storing the image-formed sheet discharged from the copying machine main body 11, the sheet is received by the above-described receiving mechanism 20, and the waist is removed by the waist removing member 21. Is removed, and the flapper 17 disposed immediately downstream of the transport roller 15 directs the transport direction approximately 90 degrees directly below, and is automatically transported vertically downward along the transport path 16. Then, after being conveyed to a predetermined position by the sheet conveying mechanism 38, the conveying direction is bent by the indexer 39 and stored in the predetermined bin 37. During this time, no abnormal noise is generated from the sheet.
[0020]
In the above embodiment, the case where the sheet receiving mechanism 20 is provided on the upper part of the sorter 12 and the sheet received in the substantially horizontal direction is conveyed substantially vertically downward has been described. However, the present invention provides the sheet receiving mechanism on the lower part of the sorter. The present invention is also applied to a case where a sheet received in a substantially horizontal direction is conveyed vertically upward, and is also applied when the position of the sheet receiving mechanism and the sheet conveying direction are other than up and down. Further, in the above-described embodiment, an example in which the sheet conveying direction is suddenly changed and the sheet conveying surface is bent and conveyed by approximately 90 degrees has been described, but the present invention is not necessarily limited to 90 degrees. Further, in the above embodiment, the sheet transfer between the copying machine main body 11 and the sorter 12 has been described. However, the present invention can also be applied to the sheet transfer at the time of moving from one processing to the next processing in the same apparatus. Things.
[0021]
【The invention's effect】
As described above, according to the sheet receiving mechanism according to the present invention, when receiving a sheet conveyed in a stiffened state, the stiffening removing means for removing the stiffening of the sheet is arranged. When the sheet is received, the stiffness of the sheet will be removed, and even if the sheet is bent by suddenly changing the sheet conveyance direction immediately after the sheet is received, it is possible to prevent the generation of abnormal noise and damage to the sheet from the sheet. Yes, and there is no jam at the time of acceptance.
[0022]
Further, according to the sheet receiving mechanism according to the present invention, since the removing sheet stiffness with the only to have a tension to the sheet, its purpose can be fully achieved yet simple means.
[0023]
Further, according to the sheet storage device of the present invention, the receiving port for the stiffened sheet discharged from the image forming apparatus, the stiffening removal member for the sheet installed near the receiving port, and the stiffened sheet are removed. And a bin for accommodating the sheets conveyed by the sheet conveying unit, so that a large number of sheets discharged from the image forming apparatus are provided for each bin. Even at the time of high-speed storage, abnormal noise generation and sheet damage of the sheet are prevented, and the high-speed conveyance processing can be performed with a low noise.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing one embodiment of a sheet receiving mechanism according to the present invention.
FIG. 2 is a perspective view showing an embodiment of a stiffening means.
FIG. 3 is a perspective view showing a sheet receiving mechanism of the sorter.
FIG. 4 is a schematic diagram showing a sheet receiving mechanism when the top of the stiffening removing member has an obtuse angle.
FIG. 5 is a schematic diagram showing a sheet receiving mechanism when a plurality of tops of a stiffening removing member are provided.
FIG. 6 is a schematic diagram showing a sheet receiving mechanism when a waist removing member is provided on an upper guide surface.
FIG. 7 is a schematic view showing a sheet storage device to which the sheet receiving mechanism of the present invention is applied.
FIG. 8 is a schematic explanatory view showing an example of a conventional sheet receiving mechanism.
[Explanation of symbols]
12 sorter 14 receiving port (sheet receiving means)
15 Conveying rollers (sheet conveying means)
16 Conveying path 18 Upper guide surface 19 Lower guide surface 20 Sheet receiving mechanism 21 Seat removal member 24 Top

Claims (6)

Receiving means of the sheet conveyed in a stiffened state, comprising a stiffening removing means for removing the stiffening of the received sheet,
The stiffening removing means is disposed between a paper discharging roller for conveying the sheet to the receiving means and a conveying roller for conveying the stiffened sheet. inclined surface and the discharge roller and the sheet receiving mechanism, wherein Rukoto a protruding portion that protrudes from the straight line connecting the nip point of the sheet in the conveying rollers and located downstream of said inclined surface for guiding. 2. The sheet according to claim 1, wherein the sheet receiving means has an inclined guide surface which gradually narrows toward a transport roller to guide the sheet reception, and the stiffening removing means is provided on the guide surface. Receiving mechanism. The guide surface includes an upper guide surface and a lower guide surface, and the stiffening removing means protruding from the lower guide surface has an inclined surface inclined at substantially the same angle as the lower guide surface of the receiving means. together, according to claim 1 or 2, wherein the sheet receiving mechanism top of the inclined surface formed by upwardly projecting the straight line connecting the nip point of each sheet in said sheet discharge roller and the conveying roller. A receiving port for the perforated sheet discharged from the image forming apparatus, a member for removing the perforated sheet provided near the receiving port, and a sheet conveying means for conveying the perforated sheet in a direction different from the receiving direction And a bin for storing the sheet conveyed by the sheet conveying means,
The waist removing member is disposed between a discharge roller for transporting the sheet to the receiving port and a transport roller for transporting the sheet from which the waist has been removed, and the sheet is transported to the transport roller. sheet storage device according to claim Rukoto a protruding portion located on the downstream side of the inclined surface and said protruding from the straight line connecting the nip point of the sheet in the sheet discharge rollers and the transport rollers and the inclined surface for guiding. A receiving port for the perforated sheet discharged from the image forming apparatus, a member for removing the perforated sheet provided near the receiving port, and a sheet conveying means for conveying the perforated sheet in a direction different from the receiving direction Sheet conveying means for vertically conveying the sheet from which the waist has been removed along the sheet conveying path, an indexer provided to be able to move up and down along the sheet conveying path, and a sheet discharged from the indexer. With multiple bins to accommodate,
The waist removing member is disposed between a discharge roller for transporting the sheet to the receiving port and a transport roller for transporting the sheet from which the waist has been removed, and the sheet is transported to the transport roller. sheet storage device according to claim Rukoto a protruding portion located on the downstream side of the inclined surface and said protruding from the straight line connecting the nip point of the sheet in the sheet discharge rollers and the transport rollers and the inclined surface for guiding. The sheet receiving port has an inclined guide surface that gradually narrows the receiving port toward the sheet conveying means, and a sheet stiffening removing member protrudes from the guide surface. 5. The sheet storage device according to 5.

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