JPH0373741A - Skewing device for paper - Google Patents

Abstract

PURPOSE:To carry out skew nipping paper surely with the vertical transport surfaces by constituting a skewing device for paper so that a driving roller for skew and a pressurizing member for following which is opposed to the driving roller are attracted each other by keeping at least one between them as magnet. CONSTITUTION:A driving roller 14 for skew and a following pressurizing member 22 for skew which is opposed to the driving roller 14 are attracted each other, using one as magnet and the other as magnetic body. Therefore, even in case of a skewing device 7 having a vertical transport surface, paper can be nipped surely, and the skewing action can be effectively performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a) an oblique device having a vertical conveying surface and conveying a sheet discharged from an image forming apparatus on an edge-based basis;

[Conventional technology]

Paper that is ejected from an image forming device such as a copying machine.

Depending on the system of the image forming apparatus, there are cases of center-based conveyance and cases of edge-based conveyance. For paper processing devices such as sorters and sorter stapler finishers that receive sheets ejected in this way, edge-based conveyance is often more convenient. It is necessary to switch to the standard conveyance, and therefore the paper must be moved from the center position of the conveyance plane to the edge position. For this purpose, a paper oblique device is arranged on the paper conveyance path to the paper processing device.

This diagonal device uses a diagonal drive roller made of chloroprene rubber or the like that is disposed diagonally with respect to the paper conveyance direction and a driven pressure member opposing the roller to diagonally rotate the paper that has been conveyed with a center reference. direction, and when it hits a stopper, it changes to end-based conveyance. In this case, if a normal driven roller is used as the driven pressure member described above, the degree of freedom in the rotational direction of the paper is limited when it hits the stopper, and the paper may not be able to move the paper sufficiently. So,
Iron balls and the like are often used as the pressure member. However, in such conventional diagonal devices, the conveyance method relies on the weight of the iron balls, etc., so the diagonal conveyance surface is not in a horizontal position or There is an inconvenience that it must be placed at a position close to this.

[Problem to be solved by the invention]

SUMMARY OF THE INVENTION An object of the present invention is to construct a sheet tilting device having a vertical or nearly vertical conveyance surface with the same simplicity as a conventional tilting device having a horizontal conveyance surface.

[Means to solve the problem]

The above problem is solved by the present invention, in which at least one of the oblique drive rollers and the driven pressure member facing the drive rollers is a magnet, and the rollers are attracted to each other.

Furthermore, in order to solve the above-mentioned problems, the present invention proposes that the annotation roller for oblique phrases is a rubber magnet, and that the pressure member for oscillation is made of a spherical magnetic material.

[For production]

In the present invention, one of the diagonal drive roller and the diagonal driven pressure member opposing the roller is a magnet, and the other is a magnetic material so that they are attracted to each other. As a result, the driving roller and the driven pressure member attract each other by magnetic force without depending on gravity, so even in a tilting device where the conveyance surface is vertical, the paper can be reliably held and tilted effectively. It is possible to perform an action.

〔Example〕

In FIG. 1, a transfer sheet that has been processed and discharged by a central reference method in a copying machine 1 is sent to a paper processing device 3 by a paper discharge roller 2 and reaches a switching claw 4 . When the switching claw 4 is at the position indicated by the broken line, the transfer paper is sent upward and is discharged onto the tray 6 via the respective feeding rollers 5. When the switching claw 4 is in the position indicated by the solid line, the transfer paper reaches downward to the oblique device 7 constructed according to the present invention. The transfer paper, which has been changed from center-based transport to end-based transport by the oblique device 7, is sent to the sorter section 10 via feeding rollers 8.

The sorter unit 10 includes a plurality of bins 9 arranged side by side, a sorter discharge roller lla attached to each of these bins, and a deflection claw 1.
1b, and when one of the deflection claws 11b is turned into the paper path in accordance with a control signal from a control circuit (not shown), the transferred transfer paper is fed into the bin to which the deflection claw belongs. The sorter section 10 has a normal configuration, and therefore detailed explanation will be omitted.

In FIG. 2, the rotating part of the diagonal device 7 is equipped with a receiving driving roller 12 on the receiving side and a discharging driving roller 13 on the discharging side. Coro 14
It is equipped with These drive rollers are fixed to respective shafts bearing on the front side plate 15 and the rear side plate 16.

Furthermore, the oblique device 7 includes a stopper 17 arranged parallel to the transfer paper conveyance direction.

In FIG. 3, the conveyance drive guide plate 18 and the conveyance driven guide cutout 9 are arranged parallel to each other with a relatively small interval, forming a paper conveyance path therebetween. Each drive roller 12.13.1 shown in FIG.
4 is installed.

The driven guide plate 19 has a receiving driven roller 20° and a discharging driven roller 21 facing the receiving driving roller 12, ejecting driving roller 13, and diagonal driving roller 14 of the drive guide plate, respectively.
．． A driven ball 22 for oblique direction is arranged.

In FIGS. 2 and 4, a timing pulley 23 is attached to the shaft of the receiving drive roller 12, a timing pulley 24 is attached to the shaft of the discharge drive roller 13, and a diagonal gear 25 is attached to each shaft of the diagonal drive roller 14. Further, the helical gear 25 meshes with a helical gear of an idler 26 which is a single helical gear/timing pulley. As shown in FIG. 4, a double-tooth timing belt 27 is placed over the timing pulleys 23, 24 and the timing pulley of the idler 26. As shown in FIG. Furthermore, another timing pulley 28 is formed integrally with the timing pulley 24, and is rotationally driven by the drive source of the paper processing device 3 via a timing belt (not shown). The driving rollers 12.13°14 are rotationally driven. Reference numeral 29 shown in FIG. 4 is an idler pulley.

According to the present invention, the diagonal drive roller 14 shown in FIGS. 2 and 3 is made of a rubber magnet, and the diagonal driven ball 22 is made of a rubber magnet.
is made of iron, so that the driven iron ball 22 is attracted by the magnetic force of the driving roller, and a mutual pressing force is obtained between the driven iron ball and the driving roller. As a result, even though the conveying surface of the diagonal device 7 is vertical, the transfer paper is transferred to the driving roller 1.
4 and the driven member 22, and is subjected to the oblique action shown by arrow A in FIG.

〔Effect of the invention〕

According to the configuration of the present invention, a diagonal device having a vertical conveying surface with reliable operation can be achieved by simply changing the material of the members used, and a stable pressing force can be obtained without a special pressing mechanism.

According to claim 2, by using a rubber magnet as the material of the diagonal driving roller in combination with the driven iron ball, it is possible to reduce the rolling noise.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the connection configuration between a copying machine and a paper processing device including a sorter section, Fig. 2 is an explanatory diagram of the drive unit of the diagonal device, and Fig. 3 is a diagram showing the diagonal device in XY directions. FIG. 4 is an explanatory diagram of the drive system of the tilting device. Machine...Copy machine 3...Paper processing device 7...Oblique device 4...Oblique drive roller 22...Oblique follower rod 1 Fig.3

Claims (2)

[Claims] (1) In a diagonal device that has a nearly vertical conveyance surface and is used to convey paper ejected from an image forming apparatus based on the edge surface, a diagonal drive roller and a driven roller facing these drive rollers are used. A diagonal device characterized in that at least one of the pressure members is a magnet and is configured to attract each other. (2) The diagonal device according to claim 1, wherein the diagonal drive roller is a rubber magnet, and the driven pressure member is made of a spherical magnetic material.