JPH05124765A - Paper sheet discharge device for printing machine - Google Patents

Abstract

PURPOSE:To provide a paper sheet discharge device which can dispense with a large installation space and by which a paper sheet can be discharged accurately into a narrow space without staining a printing image surface of the paper sheet and the tip of the paper sheet by arranging a restraining member in a paper sheet discharge section so as to restrain gas supplied by means of a blowing member from leaking the side surface of the paper sheet CONSTITUTION:Recess parts 32 are formed on one sides of paper sheet discharge trays 31 of a paper sheet discharge section 25, and the first and the second restraining plates 35 and 36 are arranged erectly along both the sides, and the base edge of the first restraining plate 35 is pivoted on the front edge of one vertical bracket 30 so as to be opened/closed, and the second restraining plate 36 is formed in width capable of advancing/retreating in the recess parts 32, and can move to the paper sheet discharge trays 31. As a result, both the restraining plates 35 and 36 form wind shielding plates along both side edges of the paper sheet discharge trays 31, and can restrain air from leaking/diffusing from the side surfaces, and air stream is straightened, and pressure is kept approximately uniform, so that rubbing on a printing image surface of a previously fed paper sheet 10, stain on the tip of the moving paper sheet 10 and a drop of the paper sheet in an unprescribed position are not caused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper ejecting apparatus for a printing machine, and more particularly to an on-line sorter paper ejecting apparatus for a printing machine.

[0002]

2. Description of the Related Art In a conventional sheet discharging device of this type of printing machine, sheets of paper on which a print image is formed are sequentially stacked by a sheet feeding section on a sheet discharging tray of the sheet discharging section. When the paper is sent to the paper ejection section in a flat and natural state, the tip of the paper hangs down and moves on the paper ejection tray, which scrapes the print image surface of the paper loaded on the paper ejection tray first. Since the paper is moved, the printed image surface and the leading edge of the moving paper are soiled, and the paper is rubbed against each other, so that the paper does not fall into a predetermined position, and the discharged paper as a whole is messy. There is a problem that becomes. Therefore, as a paper ejection device that solves such a problem, the paper to be ejected is curved in an arc shape when viewed in a cross section in a direction orthogonal to the movement direction, and the apparent rigidity in the movement direction, so-called "strain" It is configured to increase the strength of “”, move to a position directly above the paper loaded on the paper output tray without bending during the movement, and drop while maintaining a virtually horizontal posture. Have been proposed. As an example thereof, there is one disclosed in Japanese Patent Laid-Open No. 60-148866, which is a valley between the printing drum and the discharge tray, in which both sides along the moving direction are higher than the center. A paper discharge path having a die-shaped paper receiving surface is provided, and an air inlet is provided in the center of the paper-receiving surface. It is curved in an almost U-shaped arc so that it does not hang down. However, in such a device, the curved shape given to the paper disappears when the paper is ejected from the paper ejection port of the paper ejection device to the paper ejection tray, and the intended purpose cannot be achieved. Further, in order to alleviate such an inconvenience, the discharge space in the vertical direction is made large so that the front end of the discharged paper does not rub, but in the case of the online sorter, the interval per bin is wide. Therefore, there is a problem that the size of the entire device becomes very large.

[0003]

As a device for solving the above-mentioned various problems, the applicant of the present invention has proposed a device disclosed in Japanese Patent Application No. 3-206886. When sending the paper with the printed image on the surface to the paper output tray,
By generating a compressed thin band of air flow between the front side of the previously sent paper and the back side of the next sent paper, the printed image surface of the previously sent paper and the moving paper. The tip of the paper does not get dirty, and it prevents the papers from rubbing against each other, which prevents the papers from falling into a predetermined position. The paper can be discharged in a narrow space. However, in such a thing, since it is necessary to rectify the flow of air into a thin laminar flow, it is necessary to provide a long flow path or a rectifying plate between the fan and the air outlet. As a result, the entire apparatus becomes large and requires a large installation space. Further, as shown in FIG. 9, as the air layer goes forward in the traveling direction of the paper, the air flows out from both side edges of the paper and the pressure is increased. There is a problem in that it is difficult to effectively prevent the deterioration of the upper and lower sheets and the separation of the upper and lower sheets, which results in the same problems as in the conventional case.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional paper discharge device, and to prevent the printed image surface of the previously fed paper and the tip of the moving paper from becoming dirty.
It also prevents the sheets from rubbing against each other and causing them not to fall into place, ensuring that the ejected sheets do not clutter as a whole and that they are delivered to a narrow space. Moreover, it is an object of the present invention to provide a paper discharge device that does not require a large installation space because the entire device does not become large.

[0005]

In order to achieve the above-mentioned object, the present invention according to claim 1 is a paper discharge section having a paper discharge tray for stacking paper sheets on which a print image is formed. And a paper feeding unit that feeds the paper to the paper ejection unit, the paper feeding unit blowing the gas between the front surface of the previously fed paper and the back surface of the next fed paper. In a paper discharge device of a printing machine having a member, the paper discharge unit has a suppressing member that suppresses leakage of gas supplied by the blower member from the side surface of the paper. It depends on. According to a second aspect of the present invention, in the first aspect of the present invention, the paper discharge tray includes a plurality of paper discharge trays on which sheets are sequentially stacked. According to a third aspect of the present invention, in the first aspect of the invention, the leakage suppressing member has first and second suppressing plates located on both sides of the paper on the paper discharge tray, and the first suppressing plate is integrated with the paper discharge tray. It is provided with a moving means for moving the first and second suppressing plates separately. According to a fourth aspect of the present invention, in the first aspect of the present invention, the first suppressing plate can be opened and closed centering on one side edge of the first suppressing plate, and a detection member for detecting the opening and a sheet based on a detection signal of the detection member. And an extruding means for extruding the sheet from the paper discharge table.

[0006]

In the present invention as described above, claims 1 and 2 are provided.
In the invention of claim 1, when the paper printed by the printing machine is sent to the paper output section by the paper feed section and is stacked on the paper output tray, the paper provided earlier in the paper output section by the blower member is provided. The gas is sent between the front side of the paper and the back side of the paper to be sent next, and the paper is carried by the belt-like gas flow thus sent to a predetermined position and then discharged by its own weight. In this case, the suppressing member arranged on the side surface of the paper forms a wind shield to prevent gas from leaking and diffusing from the side surface, and the gas is rectified. Since the pressure is kept almost uniform before and after going straight, the leading edge of the paper hangs down even if the gas flow is thin, rubbing against the printed image surface of the previously sent paper, and the same image In addition to the surface and the tip of the moving paper not getting dirty, We are not occur that as not to fall into position. According to the third and fourth aspects of the invention, when the sheets stacked on the sheet discharge tray as described above are taken out, the first suppressing plate of the first and second suppressing plates located on both sides of the sheet is set to the opening position. The moving member moves, the detecting member detects the moving member, and the moving unit moves the first suppressing plate, the discharge tray, and the second suppressing plate, which are integrated, by the detection signal of the detecting member. The constituent second suppressing plate pushes the sheet out of the opening of the sheet discharge tray, and the operator takes out the sheet 10.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments of the present invention shown in the drawings, reference numeral 1 denotes a paper discharge device comprising an on-line sorter, a carrying section 3 is provided on one side of a machine body 2, and the carrying section 3 is provided at the upper and lower portions respectively. A main cylinder 4 and a sub-cylinder 5 which are rotatably supported and have an opening on the outer periphery, a mesh-shaped endless belt 6 stretched between these cylinders 4 and 5, and an endless belt provided between the cylinders 4 and 5. 6 has an intake box 7 having an opening along the inner surface thereof, the main cylinder 4 is rotated in the direction of the arrow by a drive unit (not shown), and an intake fan 8 is attached to the intake box 7. Reference numeral 11 denotes a paper feeding section that is installed on the opposite side of the air intake box 7 with the endless belt 6 sandwiched therebetween. The paper feeding section 11 includes a guide rail 13 that is attached to the machine body 2 in parallel with the endless belt 6 and this guide. And a screw rod 15 rotatably supported at the upper and lower bent portions of the rail 13, the lower end of the screw rod 15 is connected to the motor 16, and the nut 14 screwed to the screw rod 15 is attached. The slider 12 that is moved up and down along the guide rail 13 as the screw rod 15 rotates.
Further, the distribution claw 18 is provided, and the blower member 17 is provided with a blower fan 19 and a blower port 20.

Reference numeral 25 denotes a paper discharge section, the details of which are shown in FIGS. 2 to 4. The upper and lower parts of the side plate 26 of the machine body 2 of the paper discharge apparatus 1 are connected by horizontal guide rails 27 and 28. Guide rail 27,
The upper and lower ends of a pair of vertical brackets 30 spaced apart from each other are slidably fitted to each other, and these vertical brackets 30 support a paper output tray 31 composed of a plurality of trays. A recessed part 32 is formed on the first side, and the first and second sides are formed along both sides of the recessed part.
Suppressing plates 35 and 36 are erected, the first suppressing plate 35 is pivotally supported at its base end to the front edge of one of the vertical brackets 30 and can be opened and closed, and the second suppressing plate 36 has a recess 32. The width is such that it can move forwards and backwards, and is movable in the direction of the arrow in FIG. As shown in FIG. 4, one of the vertical brackets 30 is provided with a first rack plate 37 and a second restraint plate 36.
A second rack plate 38 is laterally mounted on the rack so as to face each other, and a pinion 39 that meshes with the rack plates 37, 38 is disposed in the middle of the rack plates 37, 38. The pinion 39 extends from the guide rails 27, 28 in the horizontal direction. It is attached to the drive shaft of a motor 42 supported by a bracket 41. A slot 43 is provided in the second rack plate 38 in the longitudinal direction, and a pin 44 is slidably fitted in the slot 43, and the pin 44 is attached to the horizontal bracket 41. The vertical bracket 30 is provided with a detection member 46 such as a micro switch for detecting opening / closing of the first suppressing plate 36.
A magnet 47 for attracting the closed first restraint plate 36 is provided at one side edge of the paper discharge table 31.

In the above-mentioned structure, the sheet 10 printed by the printing machine is discharged to the transport section 3 by the discharging means (not shown), and discharged onto the mesh belt 6 above the main cylinder 4 from the right side of FIG. Paper is sucked by the reticulated belt 6 by the suction force of the intake box 7 and descends,
By the rotation of the screw rod 15 caused by the operation of the motor 16 of the paper feeding unit 11, the screw rod 15 is moved and moved forward over the distribution pawl 18 provided on the air blowing member 17 stopped at a predetermined position, and sucked by the fan 19 during this time. Is compressed in the blower member 17 and the band-shaped air blown out from the blower port 20 is blown between the front surface of the paper 10 fed first and the back surface of the paper fed next. The belt-shaped gas flow thus fed is carried to a predetermined position and then sequentially stacked on the paper discharge table 31 by its own weight. Such an operation is no different from that of the conventional paper discharge device of this type.

As described above, the sheets 10 are stacked on the sheet discharge tray 31 as shown by the hatched and dotted lines in FIG.
During this time, the first restraint plate 35 is in the closed position shown by the solid line in FIG. 4 and is attracted by the magnet 47. As a result, the both restraint plates 35 and 36 form wind shield plates along both side edges of the paper ejection tray 31. Thus, it is possible to prevent the gas from leaking and diffusing from the side surface, and the air flow on the paper ejection tray 31 does not diffuse to both sides as shown in FIG. Since the pressure is kept almost uniform before and after the direction, even if the air flow is a thin band, the leading edge of the paper 10 hangs down,
In addition to the fact that the printed image surface of the previously fed paper 10 is not rubbed and the image surface and the leading edge of the moving paper 10 are not contaminated, it does not fall into a predetermined position. In this way, when the sheet 10 is taken out from the sheet discharge tray 31 after the sheet discharge to the sheet discharge device 1 is completed, the first suppressing plate 35 is moved to the opening position shown in FIG.
46 detects and drives the motor 42 to rotate the pinion 39 in the direction of the arrow in FIG.
37, 38 are moved as shown by the arrow, and the first restraint plate 35 and the paper output tray 31 connected to the first rack 37 via the vertical bracket 30 and the first rack 37 connected to the second rack 38. 2 suppression plate
As shown in FIG. 8, 36 and 36 are moved in the opposite directions from the chain line position to the actual battle position, and the second suppressing plate 36 enters in the recess 32 of the tray 31 in the arrow direction to eject the paper 10. Paper stand
Since the sheet is pushed out from the opening on the opposite end side of 31, the operator grips and takes out the pushed portion of the sheet 10.

[0011]

As described above, the present invention is as described above. According to the first and second aspects of the present invention, the paper feeding unit for feeding the paper to the paper ejection unit having the paper ejection tray for loading the printed paper is first Has a blower member that blows gas between the front surface of the paper sent to the paper and the back surface of the paper to be sent next, and the gas supplied by the blower member leaks from the side surface of the paper at the paper discharge unit. Since it has a suppressing member that suppresses the air flow, even if the air flow is in the form of a thin band, the leading edge of the paper hangs down and rubs against the print image surface of the previously sent paper, so that the same image surface and the moving paper The tip of the paper does not get dirty, and the paper that has been ejected without falling into place does not become disordered as a whole. Since no gas is required, the entire device does not become large and a large installation space is required. There is an effect that does not require over nest. The inventions of claims 3 and 4 are, in the invention of claim 1,
The leakage suppressing member has first and second suppressing plates located on both sides of the paper on the paper discharging tray, and the first suppressing plate is integrated with the paper discharging tray, and the first and second suppressing plates are separately provided. The first restraint plate can be opened and closed centering on one side edge of the first restraint plate, and the detection member for detecting the opening and the detection signal of the detection member pushes the sheet from the sheet ejection tray. In the case of taking out the sheets stacked on the sheet discharge tray, the first restraint plate of the first and second restraint plates is moved to the opening position, and the detection member detects it and detects it. In response to the signal, the moving means moves the integrated first restraint plate, the discharge tray, and the second restraint plate, so that the second restraint plate forming the pushing means moves the sheet from the opening of the discharge tray. Extrusion,
Since the operator takes out this sheet, it is not necessary to provide a notch provided for gripping the sheet when taking out the sheet to the sheet ejection tray, thereby increasing the strength of the sheet ejection tray. The amount of discharged paper can be large, and the paper can be easily grasped, and the take-out opening can be brought to the front, so that the take-out work is extremely easy.

[Brief description of drawings]

FIG. 1 is a schematic front view of an embodiment of the present invention.

FIG. 2 is a perspective view of the paper output unit of the above.

FIG. 3 is a partial front view of the above.

FIG. 4 is a plan view of the above.

FIG. 5 is an explanatory diagram showing a sheet discharge state of a sheet discharge tray in the above.

FIG. 6 is an explanatory diagram showing a state where a sheet is placed on the above-described sheet discharge tray.

FIG. 7 is an explanatory diagram showing an open state of the first suppressing plate of the same.

FIG. 8 is an explanatory diagram showing a state of taking out a sheet of the above.

FIG. 9 is an explanatory diagram showing a flow state of air at the time of discharging the sheet.

FIG. 10 is an explanatory diagram showing a flow state of air at the time of discharging a sheet of a conventional device of this type.

[Explanation of symbols]

 1 Paper ejection device 2 Machine body 3 Conveying section 11 Paper feeding section 14 Nut 15 Screw rod 17 Blower member 18 Distributing claw 19 Blower fan 20 Blower port 25 Paper ejecting section 27, 28 Guide rail 30 Vertical bracket 31 Paper ejection table 32 Recessed recess Part 35 First restraint plate 36 Second restraint plate 37 First rack plate 38 Second rack plate 39 Pinion 41 Horizontal bracket

Claims (4)

[Claims] 1. A paper ejecting section having a paper ejection tray for accommodating a paper on which a print image is formed, and a paper feeding section for feeding the paper to the paper ejecting section. In a paper discharge device of a printing machine having a blower member for blowing gas between the front surface of the taken-in paper and the back surface of the paper to be sent next, in the paper discharge unit, the gas supplied by the blower member is a paper sheet. A discharge device for a printing press, comprising a suppressing member that suppresses leakage from the side surface of the printer. 2. The paper discharge device for a printing press according to claim 1, wherein the paper discharge tray is composed of a plurality of paper discharge trays for sequentially stacking sheets. 3. The leakage suppressing member has first and second suppressing plates located on both sides of the paper on the paper ejection tray, and the first suppressing plate is integrated with the paper ejection tray. 2. The paper discharge device for a printing press according to claim 1, further comprising moving means for moving the first and second suppressing plates separately. 4. The first suppressing plate is openable and closable around its one side edge, and a detection member for detecting the opening,
2. The paper discharge device for a printing machine according to claim 1, further comprising a pushing means for pushing the paper from the paper discharge tray in response to the detection signal of the detection member.