JP4219248B2 - Paper receiving device - Google Patents

Description

  The present invention relates to a paper receiving apparatus, and relates to a technique for receiving paper discharged from a printer, a printing machine, or the like.

  An example of a conventional printing apparatus is shown in FIG. In the apparatus main body 1, a plate making / plate feeding mechanism unit 3, a plate discharging mechanism unit 4, a sheet feeding mechanism unit 5, and a sheet discharging mechanism unit 6 are arranged around a plate cylinder 2.

  The plate making / plate feeding mechanism unit 3 feeds an unmade base paper 8 from the master roll 7 and forms it on the base paper 8 by the thermal head 10 based on the image data of the original read by the scanner mechanism unit 9 disposed on the upper part of the apparatus main body 1. The base paper 8 which has been perforated to make a plate is fed to the plate cylinder 2. The plate removal mechanism 4 pulls the base paper 8 between the pair of upper and lower drawing rollers 11 and 12 and winds the base paper 8 with the winding core 13.

  The paper feed mechanism unit 5 takes out the paper 15 placed on the paper feed tray 14 by the paper feed roller 16, and feeds the paper to the position between the base paper 8 and the press roller 19 by the timing roller 17 and the guide roller 18. Then, printing is performed on the paper surface by the rotation of the base paper 8. The paper discharge mechanism 6 peels off the printed paper 15 from the base paper 8 by the paper peeler 20 and discharges it onto the print tray 21.

  As a technique related to the print tray 21, for example, there is one described in Patent Document 1. This is as shown in FIG. 8, and the main wall plate 32 is erected on the substrate 31 of the paper discharge tray 30. The main wall plate 32 is provided with an abutting body 34 standing on the path of the printing paper 33, and the upper end portion of the abutting body 34 is fixed to the main wall plate 32, and the lower end portion of the abutting body 34 is open in the opening of the substrate 31. It is fitted.

  The abutting body 34 is arranged to drop and align the printing paper 33 downward without being bounced or caught by vibrating according to the collision force of the printing paper 33, and the relatively thin printing paper 33 is used as a damping member. Even when it strikes the vehicle, the rigidity is set such that it vibrates slightly in the opening while shaking, and a vibration damping member 35 having an elastic absorption force is provided at the collision position to reduce the collision noise.

  The printed printing paper 33 discharged from the printer flies over the substrate 31, the leading end thereof hits the vibration damping member 35 of the abutting body 34, is prevented from progressing, and falls onto the substrate 31. At this time, if the abutting body 34 is in a completely non-seismic state, the leading end portion of the printing paper W is caught by the frictional resistance between the vibration damping member 35 and the working surface of the abutting body 34 and does not slip smoothly. The low-stiffness printing paper 33 is loaded in a curved state.

  Actually, most of the kinetic energy of the printing paper W colliding with the vibration damping member 35 is absorbed, and the kinetic energy of the printing paper 33 that is not completely absorbed by the vibration damping member 35 vibrates the abutting body 34, and the leading edge of the printing paper 33. And a slight gap is formed between the vibration control member 8 and the working surface of the abutting body 4. As a result, as indicated by W1 to W6, the printing paper 33 descends as indicated by a broken line while the tip of the printing paper 33 contacts the action surfaces of the damping member 35 and the abutting body 34 several times, and follows the action surface. In this way, the printing paper 33 is aligned with the leading end of the printing paper 33 in contact with the abutting body 34.

Moreover, there exists what is described in patent document 2. FIG. As shown in FIG. 9, a sheet 41 conveyed one by one by a conveyor is put into an accumulation frame formed by a front stopper 42 provided in the front in the sheet conveying direction and a rear stopper 43 provided in the rear. is there. The front stopper 42 is provided with a stopper plate 44. The stopper plate 44 is disposed so as to be movable back and forth in the conveying direction of the sheet 41, and is urged rearward in the sheet conveying direction by a coil spring 45 so as to be buffered. The sheets 41 are aligned and stacked.
JP-A-8-259082 Japanese Unexamined Patent Publication No. Sho 63-171864

  However, in the technique described in the above-described conventional patent document 1, it is avoided that the abutting body 34 becomes an obstacle when the printing paper 33 is dropped due to the shaking of the abutting body 34, but the printing paper 33 is free. Since it falls, the printing paper 33 in contact with the abutting abutting body 34 does not necessarily fall directly below it, and may fall to the rear position or the front position. In order to ensure contact with the abutting body 34, it is necessary to dispose the abutting body 34 obliquely upward so that the lower side projects toward the printing paper 33, and the front side of the stacked printing paper 33 In some cases, the type of paper, particularly thick paper with a large amount of rebounding, may not be able to absorb the rebound sufficiently and become irregular.

  In the technology described in Patent Document 2, the sheets 41 are aligned and stacked by the buffering action of the coil spring 45, but when the stopper plate 44 is retracted, the coil spring 45 is compressed, and the stopper plate 44 is moved back by its elastic restoring force. Therefore, mechanical parts such as the coil spring 45 are required for the backward movement, and the coil spring 45 repeats compression and extension, so mechanical fatigue of the coil spring 45 becomes a problem.

  The present invention aligns the sheet edges so that the stacked surfaces of the stacked sheets are perpendicular to the sheet surface, and allows the sheets to be aligned using gravity without using a mechanical member such as a coil spring. An object is to provide a receiving device.

In order to solve the above-mentioned problems, a paper receiving apparatus according to the present invention according to claim 1 includes a paper discharge tray arranged in the horizontal direction to stack paper and a stopper means for receiving the paper discharged on the paper discharge tray. When, and a regulating member for regulating the trailing edge of the paper set position, movable at least one of the stopper means and the regulating member in the discharging direction of the sheet, the stopper means is discharged to the working surface discharge tray on A movable body that is provided so as to be movable between a forward stop position that abuts against the sheet to be moved and an obliquely rearward operating position in which the action surface is separated from the sheet, and the stopper means holds the movable body by engagement of the guide groove and the shaft. Then, the movable body moves backward to the rearward operating position diagonally upward against the gravity by the guide of the shaft by the guide groove, and returns to the front stop position by the gravity .

  With the above-described configuration, the distance between the regulating member and the stopper means is adjusted according to the size of the sheets stacked on the paper discharge table. The paper discharged onto the paper discharge table flies and collides with the action surface of the movable body of the stopper means, and the kinetic energy is given to the movable body and falls from the collision position. The movable body, given the kinetic energy of the paper, moves back to the diagonally upward backward operating position against gravity, then moves back to the forward stop position by gravity and directs the paper that has fallen on the paper output tray to the regulating member. Then, press on the working surface and align and stack with the regulating member as a reference.

In the paper receiving apparatus of the present invention according to claim 2, the stopper means has an elastic body that is separated from the movable body at the front stop position and press-contacts the movable body at the rear operation position.
With the above-described configuration, the movable body abuts against the elastic body in the process of retreating to the backward operation position against gravity, elastically deforms the elastic body, and press-contacts the elastic body at the rear operation position. When the movable body that has reached the backward operating position returns to the forward stop position due to gravity, the movable body starts smoothly by receiving the elastic restoring force of the elastic body during the initial movement.

  As described above, according to the present invention, the movable body is driven using the kinetic energy of the paper discharged on the paper discharge tray, and the movable body is moved back using gravity to align the paper. The mechanical parts for the backward movement of the movable body become unnecessary, and there is no problem such as fatigue of the mechanical parts for the backward movement as in the prior art, and the sheets can be aligned with a simple configuration.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5, the paper receiving device 51 is applied to the printing device described above with reference to FIG. 7 and corresponds to the print tray 21.

  The paper receiver 51 includes a paper discharge tray 52 that is arranged along the horizontal direction and stacks the paper, a stopper unit 53 that stands on the paper discharge base 52, a guide blade 54 that regulates in the paper width direction, and a paper And a regulating member (not shown) that regulates the rear edge to the set position. The horizontal direction of the discharge table 52 is best, but it is maintained in the substantially horizontal direction even when the weight of the paper is applied.

  The stopper means 53 receives paper discharged from the printing device or the like onto the paper discharge tray 52, and is provided so as to be slidable in the paper discharge direction, and is fixed at a set position by a lock device 55. Since the locking device 55 is a conventional technique, a detailed description thereof is omitted. Further, the stopper means 53 and the guide blade 54 are swingable between a storage position in which the stopper means 53 and the guide blade 54 are accommodated in the discharge table 52 and a standing position.

  Although the detailed description of the restricting member is omitted, it has a vertical restricting surface for aligning the sheets and is usually fixedly arranged at a predetermined position, but can be slidable in the sheet discharge direction. .

  The stopper means 53 has a jogger plate 56 that forms a movable body and a stop guide 57 that holds the jogger plate 56. The jogger plate 56 is arranged with the working surface 58 that contacts the paper in the vertical direction, and shafts 59 are provided at the upper and lower positions on both sides.

  The stop guide 57 forms a region for accommodating the jogger plate 56 between the support members 60 on both sides, and a guide groove 61 for engaging the shaft 59 of the jogger plate 56 is provided at a predetermined position of the support member 60. The shaft 59 is provided with a projection 62, and the support member 60 is provided with a locking portion 63 that engages with the projection 62. The shaft 59 is moved from the guide groove 61 by the engagement between the projection 62 and the locking portion 63. Prevent it from slipping out.

  In this structure, the stop guide 57 supports the shaft 59 in the guide groove 61, so that the jogger plate 56 is brought into contact with the front stop position A and the action surface 58 where the action surface 58 comes into contact with the sheet discharged onto the sheet discharge table 52. Is held movably over a rearward operating position B that is diagonally above and away from the paper.

  The stop guide 57 is provided with an elastic body 64 such as a leaf spring that is separated from the jogger plate 56 at the front stop position and presses against the jogger plate 56 at the rear operation position. The elastic body 64 is not essential for the operation of the jogger plate 56 but is a means for assisting the operation.

  The guide groove 61 can also be configured such that the inclination angle of the groove edge that guides the shaft 59 can be adjusted according to the type of paper. For example, a guide member for guiding the shaft 59 is arranged along the groove edge of the guide groove 61, and the guide member is provided so as to be swingable so that the inclination angle can be adjusted, or a guide member separate from the stop guide 57. This can be realized by forming a guide groove 61 in the shaft and swinging the guide member so that the inclination angle can be adjusted. In this case, each guide member for guiding each shaft 59 is operated in conjunction with a link mechanism or the like. It is also possible to provide a sound absorbing member such as a sponge at the portion of the jogger plate 56 that collides with the paper to mute the sound. In this case, the sound absorbing member is formed thin, and the jogger plate 56 does not hinder the absorption of the kinetic energy of the paper.

  Hereinafter, the operation of the above-described configuration will be described. The stopper means 53 adjusts the position of the distance from the regulating member (not shown) according to the size of the paper stacked on the paper discharge tray 52 and arranges it at the set position.

  As shown in FIG. 5A, the sheet 65 discharged from the printing apparatus or the like flies over the sheet discharge table 52 and collides with the action surface 58 of the jogger plate 56 of the stopper means 53. Due to this collision, the sheet 65 gives its kinetic energy to the jogger plate 56 and falls from the collision position.

  As shown in FIG. 5B, the jogger plate 56 to which the kinetic energy of the paper 65 is given is operated rearward obliquely upward from the front stop position A against the gravity while the shaft 59 is guided by the guide groove 61. Retreat to position B. In this process, the jogger plate 56 abuts against the elastic body 64 to elastically deform the elastic body 64 and presses against the elastic body at the rearward operation position B.

  As shown in FIG. 5C, the jogger plate 56 that has spent the kinetic energy given from the paper 65 to move to the backward operation position B is moved back to the front stop position A along the guide groove 61 by gravity. To do. At this time, when the jogger plate 56 is moved back to the forward stop position A by gravity, the jogger plate 56 is smoothly started by receiving the elastic restoring force of the elastic body 64 at the initial movement, and is separated from the elastic body 64 in the backward movement process. The sheet 65 dropped on the table 52 is pressed against the regulating member by the action surface 58, and the sheets are aligned and stacked on the basis of the regulating member.

  As shown in FIG. 6, the jogger plate 56 moved back to the front stop position A is stopped at the front stop position A due to the engagement between the protrusion 62 and the locking portion 63.

The front view which shows the paper receiving apparatus in embodiment of this invention Exploded perspective view showing stopper means of the paper receiving device (A), (b), (c) is a front view, a side view, and a rear view showing a jogger plate of a paper receiving device. (A), (b), (c) is a front view, a side view, and a rear view showing a stop guide of the paper receiving device. (A), (b), (c) is an operation explanatory view showing the action of the stopper means of the paper receiving device. Enlarged view of the main part of the stopper means of the paper receiving device Schematic diagram showing a conventional printing device Schematic diagram showing a conventional paper receiving device Schematic diagram showing another conventional paper receiving device

Explanation of symbols

51 Paper Receiving Device 52 Paper Discharge Stand 53 Stopper Means 54 Guide Blade 55 Locking Device 56 Jogger Plate 57 Stopping Guide 58 Working Surface 59 Shaft 60 Support Member 61 Guide Groove 62 Protruding Portion 63 Locking Portion 64 Elastic Body 65 Paper A Front Stop Position B Rear working position

Claims (2)

A discharge unit that is disposed along the horizontal direction and stacks the sheets; a stopper unit that receives the sheet discharged on the sheet discharge unit; and a restricting member that restricts the trailing edge of the sheet to a set position. At least one of the restricting members is provided so as to be movable in the paper discharge direction, and the stopper means has a front stop position where the working surface comes into contact with the paper discharged onto the paper discharge table and a diagonally upper rear where the working surface is separated from the paper. The movable body is provided so as to be movable over the operating position, and the stopper means holds the movable body by the engagement of the guide groove and the shaft. The guide of the shaft by the guide groove causes the movable body to move diagonally upward against gravity. A paper receiving device, wherein the paper receiving device is moved backward to a backward operation position and moved back to a forward stop position by gravity . 2. The paper receiving apparatus according to claim 1, wherein the stopper means includes an elastic body that is separated from the movable body at the front stop position and presses against the movable body at the rear operation position.

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