WO2011021486A1

WO2011021486A1 - Paper receiving device

Info

Publication number: WO2011021486A1
Application number: PCT/JP2010/062751
Authority: WO
Inventors: 雅也石本; 太一佐藤
Original assignee: デュプロ精工株式会社
Priority date: 2009-08-21
Filing date: 2010-07-29
Publication date: 2011-02-24
Also published as: JP2011042462A; JP5280316B2

Abstract

Disclosed is a paper receiving device (10) wherein rectangular paper (100) ejected from an ejecting port (91) is stacked on a paper receiving table (1), while regulating the paper by means of both the side walls, i.e., the front wall (21) and the rear wall (22). The paper receiving device is provided with a protruding section (3) which regulates the paper by means of the rear wall (22), and a suction mechanism (4) which sucks the air above the paper receiving table (1). The protruding section (3) is provided with first protruding bodies (31) and a second protruding body (32). The first protruding bodies (31) protrude only a predetermined dimension, and extend in the vertical direction. The suction mechanism (4) is provided with suction ports (41) formed in the rear wall (22) between the first protruding bodies (31) on both the sides in the horizontal direction, and a suction fan (42) which sucks air through the suction ports (41). The second protruding body (32) extends in the horizontal direction such that the second protruding body partitions between the first protruding bodies (31) on both the sides in the horizontal direction into the upper portion and the lower portion, and the second protruding body is provided at a position above the suction ports (41). The second protruding body (32) protrudes slightly less than the predetermined dimension of the first protruding bodies (31).

Description

Paper receiving device

The present invention relates to a paper receiving apparatus that stacks rectangular paper discharged from a discharge port of a printing machine main body or the like on a paper receiving tray while being regulated by front and rear walls and both side walls.

Generally, a paper receiving device provided in a printing machine is configured to stack rectangular paper processed and discharged in the main body of the printing machine on a paper receiving tray. The paper tray is provided with a front wall, a rear wall, and left and right side walls for restricting the fall of the discharged paper. In other words, the paper falls while touching the front edge on the front wall, the rear edge on the rear wall, the right edge on the right side wall, and the left edge on the left side wall, and is loaded on the paper tray. Is done.

By the way, in such a paper receiving device, when the paper falls in the space surrounded by the four walls on the paper receiving table, the air existing below the paper becomes a resistance. For this reason, the falling speed of the trailing edge of the sheet is slowed down. Therefore, as shown in FIG. 6, the leading edge 111 of the sheet 100 discharged next is the trailing edge 112 of the sheet 100 discharged first. And the paper 100 is jammed at the discharge port 91 of the printing machine main body 9. In order to solve this problem, as shown in FIG. 7, a mechanism for sucking air on the paper tray 1 through a large number of through holes 221 in the rear wall 22 has been proposed (Patent Document 1, 2). 6 and 7, the paper tray 1, the front wall 21, the rear wall 22, and the discharge roller portion 90 of the printing machine main body 9 are shown.

Japanese Utility Model Publication No. 64-29346 JP-A-4-209158

In the paper receiving apparatus having the suction mechanism as shown in FIG. 7, since the air below the paper 100 discharged onto the paper receiving tray 1 is sucked, the falling of the paper 100 surely becomes faster. However, even when the paper 100 is stacked up to a high position, the paper 100 is quickly dropped, and as shown in FIG. 7, the front end portion 111 of the paper 100 being discharged from the discharge port 91 immediately falls. As a result, the uppermost sheet 100 is contacted, and as a result, the sheet 100 is discharged while being rubbed against the uppermost sheet 100. Therefore, there is a problem in that the paper 100 is not sufficiently discharged from the discharge roller unit 90, and as a result, the paper 100 is clogged at the discharge port 91 of the printer main body 9.

The object of the present invention is to provide a paper receiving apparatus that can solve the above problems.

The present invention provides a paper receiving device that stacks rectangular paper discharged from a discharge port on a paper receiving tray while restricting the front and rear walls and both side walls, and controls the paper at the rear wall. And a suction mechanism for sucking air on the paper cradle, the convex portion includes a first convex body and a second convex body, and the first convex body is forward from the rear wall. Projecting by a predetermined dimension and extending in the vertical direction, and at least two are provided in parallel, and the suction mechanism is a rear wall between the first convex bodies on both sides in the lateral direction. And a suction means for sucking air through the suction port, and the second convex body extends in the lateral direction so as to partition the first convex body on both sides in the lateral direction vertically. And the second convex body is slightly higher than the predetermined dimension of the first convex body. Only resizing, and protrudes forward from the rear wall, it is characterized in that.

In the present invention, the air on the paper receiving tray is sucked by the suction means through the suction port until the paper is stacked up to the height of the second convex body. Therefore, the air in the space below the discharged paper is reliably sucked. Therefore, the discharged paper quickly falls in the space on the paper receiving tray. Therefore, according to the present invention, it is possible to prevent the front end portion of the next discharged paper from colliding with the rear end portion of the previously discharged paper, and therefore it is possible to prevent the paper from being jammed at the discharge port. .

Further, in the present invention, after the paper is stacked up to the height position of the second convex body, the air on the paper receiving tray has a difference in projecting dimension between the first convex body and the second convex body. Only through the part, it is sucked by the suction means through the suction port. Therefore, the suction force by the suction mechanism is slightly weak. Therefore, the suction force hardly reaches the paper being discharged from the discharge port. Therefore, according to the present invention, it is possible to prevent the paper that is being discharged from the discharge port from being discharged while being rubbed against the uppermost stacked paper, and therefore it is possible to prevent the paper from being jammed at the discharge port. Can be prevented.

It is a perspective view of the paper receiving apparatus of the present invention. It is an II arrow directional view of FIG. FIG. 3 is a sectional view taken along the line III-III in FIG. 2. It is a cross-sectional schematic diagram which shows the operating state of the paper receiver of this invention. It is a cross-sectional schematic diagram which shows the operation state following FIG. It is a cross-sectional schematic diagram which shows the operating state of the conventional paper receiving apparatus. It is a cross-sectional schematic diagram which shows the operating state of another conventional paper receiving apparatus.

FIG. 1 is a perspective view of the paper receiving apparatus of the present invention. FIG. 2 is a view taken in the direction of arrow II in FIG. The paper receiving device 10 is connected to a discharge port 91 of the printing press main body 9. The paper receiving apparatus 10 is disposed so as to form a substantially horizontal paper receiving base 1 positioned below the discharge port 91 and the paper receiving base 1 so as to form a space 200 that is open and rectangular in plan view. A front wall 21, a rear wall 22, a right side wall 23, and a left side wall 24. The rear wall 22 is a vertical surface extending downward from the discharge port 91 of the printing press main body 9. The front wall 21 and the

side walls

23 and 24 are also provided vertically. In the paper receiving apparatus 10, rectangular paper discharged from the discharge port 91 is received in the space 200 and is dropped while being regulated by the four

walls

21, 22, 23, and 24. It is designed to be loaded on the table 1.

FIG. 3 is a sectional view taken along the line III-III in FIG. The paper receiver 10 of the present invention includes a convex portion 3 that restricts the paper 100 at the rear wall 22 and a suction mechanism 4 that sucks air on the paper tray 1, that is, air in the space 200. The convex part 3 is provided in the center part of the horizontal direction (arrow X direction) of the rear wall 22.

The convex portion 3 includes a first rib (first convex body) 31 and a second rib (second convex body) 32. The first rib 31 protrudes forward from the rear wall 22 by a dimension L1 and extends in the vertical direction. At least two, here three, first ribs 31 are provided at equal intervals and in parallel.

The suction mechanism 4 includes a large number of suction ports 41 formed through the rear wall 22 and suction fans (suction means) 42 disposed on the rear side of the rear wall 22. As shown in FIG. 2, the suction port 41 is formed in a region between the first ribs 31 on both lateral sides. The suction fan 42 is provided so as to suck air in the space 200 through the suction port 41.

The second rib 32 extends in the lateral direction so as to partition the region between the first ribs 31 on both sides in the lateral direction. The second rib 32 is provided at a height position H1 above the region where the suction port 41 is formed. The second rib 32 protrudes forward from the rear wall 22 by a dimension L2. The dimension L2 is smaller than the dimension L1 of the first rib 31 by ΔL. ΔL is preferably 1 to 4 mm, more preferably 1 to 2 mm.

Furthermore, in the paper receiving apparatus 10, an upper limit position H0 at which the paper 100 cannot be stacked on the paper receiving tray 1 is determined. This upper limit position H0 is the highest position at which the sheet 100 can be discharged onto the uppermost stacked sheet 100 without stagnation at the discharge port 91 when the suction mechanism 4 is not operated. The height position H1 of the second rib 32 is set downward by ΔH from the upper limit position H0. ΔH is preferably 20 to 50 mm, more preferably 30 to 45 mm. The height position H1 and the upper limit position H0 are heights from the surface of the paper tray 1.

Next, the operation of the paper receiving apparatus 10 having the above configuration will be described.

As shown in FIG. 4, when the printer main body 9 is operated and the suction fan 42 is operated, the paper 100 is continuously discharged into the space 200. The paper 100 discharged into the space 200 has a front edge 101 on the front wall 21, a rear edge 102 on the tip 311 of the first rib 31, a right edge on the right side wall 23, and a left edge on the left side wall 24, respectively. , Falling while touching. At this time, since the air below the sheet 100 is reliably sucked by the suction fan 42 as indicated by the arrow A, the sheet 100 quickly falls without receiving the resistance of the lower air. Go. That is, the sheet 100 quickly falls while being regulated by the front wall 21, the tip 311 of the first rib 31, the right side wall 23, and the left side wall 24. Therefore, the problem as shown in FIG. 6 does not occur. The dropped paper 100 is sequentially stacked on the paper receiving tray 1.

When the paper 100 is stacked up to the height position H1 of the second rib 32, the paper receiving device 10 operates as shown in FIG. That is, the air below the sheet 100 discharged and positioned in the space 200 has the second rib 32, and therefore, as indicated by the arrow B, the portion where ΔL exists (gap 33) by the suction fan 42. ) Is sucked through only. Therefore, the suction force for sucking air from the space 200 by the suction mechanism 4 is slightly weakened. However, since the paper 100 is stacked up to the height position H1, the space below the discharged paper 100 is considerably small. Therefore, even if the suction force is slightly weak, the air below the paper 100 is reliably sucked and the paper 100 falls quickly. On the other hand, since the suction force by the suction mechanism 4 is slightly weakened, the suction force hardly reaches the paper 100 being discharged from the discharge port 91. Therefore, the problem as shown in FIG. 7 does not occur.

In particular, when ΔL of the gap 33 is 1 to 4 mm, further 1 to 2 mm, and ΔH related to the height position H1 of the second rib 32 is 20 to 50 mm, further 30 to 45 mm. The operation of the paper receiving apparatus 10 after the paper 100 is stacked up to the height position H1 is satisfactory.

Furthermore, it is preferable to set the interval between the adjacent first ribs 31 in the convex portion 3 (hereinafter referred to as rib pitch) as follows.

(1) When the number of the first ribs 31 is two, the rib pitch is 80 to 90 mm.
(2) When the number of the first ribs 31 is three, the rib pitch is 40 to 74 mm, and the distance between the first ribs 31 on both sides is 80 to 148 mm.
(3) When the number of the first ribs 31 is an even number of four or more, the rib pitch of the two first ribs 31 at the center is 80 to 90 mm, or the interval between the first ribs 31 on both sides is 80 to 148 mm, Any other rib pitch is set.
(4) When the number of the first ribs 31 is an odd number of 5 or more, the rib pitch of the three first ribs 31 at the center is 40 to 74 mm, or the interval between the first ribs 31 on both sides is 80 to 148 mm, Any other rib pitch is set.

When the rib pitch is too narrow, the suction force by the suction mechanism 4 is insufficient, and large-size paper such as B4 and A3 cannot be sufficiently regulated, and the paper becomes uneven. On the other hand, if the rib pitch is too wide, paper of a small size of A4 or less cannot be sufficiently regulated, and the paper becomes uneven. However, if the rib pitch is set in the above range, such a problem can be solved.

In particular, in the case of (1) above, since the maximum value of the rib pitch is 90 mm, which is the short side dimension of the smallest postcard, the trailing edge of the postcard can be sufficiently regulated. Also, since the minimum value of the rib pitch is 80 mm, when regulating the trailing edge of large-size paper such as B4 and A3, the paper can be prevented from skewing and the paper alignment can be kept good. In addition, it is possible to secure a range that can be sucked by the suction mechanism 4 and to prevent the suction force from becoming insufficient.

In the case of (2) above, the minimum value of the rib pitch is 40 mm, that is, the minimum value of the distance between the first ribs 31 on both sides is 80 mm. The same effect as in the case of the minimum value can be obtained. Further, since the maximum value of the rib pitch is 74 mm, all the first ribs 31 can support the trailing edge of the A5 paper, which is the minimum size of thin paper (paper other than thick paper), and therefore the paper is skewed. Can be prevented, and the paper alignment can be kept good. This is because thin paper is easily affected by the suction force, and is loaded while being attracted to the first rib 31 side. Therefore, the trailing edge of the paper hits all the first ribs 31. This is because it can be touched and is well regulated. On the other hand, since the postcard smaller than A5 paper is thick paper, it is not affected by the suction force so much and is loaded without being attracted to the first rib 31 side. Since the 1st rib 31 of the center among the 1 ribs 31 can regulate the trailing edge of a postcard, it is arranged well.

It should be noted that the paper receiving apparatus of the present invention can be used not only in a printing press but also in other devices as long as it is a device that processes or processes paper and discharges it.

Further, two or four or more first ribs 31 may be provided.

Furthermore, the first rib 31 or the second rib 32 may be a convex member other than the rib.

The paper receiving apparatus of the present invention has a great industrial utility value because it can quickly load paper and prevent the paper from clogging at the discharge port.

1 paper tray 10 paper receiving device 100 paper 21 front wall 22 rear wall 23 right side wall 24 left side wall 3 convex part 31 first rib (first convex body) 32 second rib (second convex body) 4 suction mechanism 41 suction Mouth 42 Suction fan (suction means)

Claims

In a paper receiving device that stacks rectangular paper discharged from the discharge port on a paper receiving tray while regulating the front and rear walls and both side walls,
A convex part that regulates the paper at the rear wall;
A suction mechanism for sucking air on the paper cradle;
With
The convex portion includes a first convex body and a second convex body,
The first convex body protrudes forward from the rear wall by a predetermined dimension and extends in the vertical direction, and is provided in parallel with at least two of the first convex body,
The suction mechanism includes a suction port formed in the rear wall between the first convex bodies on both sides in the lateral direction, and suction means for sucking air through the suction port,
The second convex body extends in the lateral direction so as to partition the first convex body on both sides in the lateral direction up and down, and is provided at a height position above the suction port,
The second convex body projects forward from the rear wall by a dimension slightly smaller than the predetermined dimension of the first convex body,
A paper receiving device characterized by that.
The second convex body is located 20 to 50 mm below the upper limit position at which paper cannot be stacked on the paper tray, and is 1 to 4 mm smaller than the predetermined dimension of the first convex body. The paper receiving apparatus according to claim 1, wherein the paper receiving apparatus protrudes only by the distance.
The second convex body is positioned 30 to 45 mm below the upper limit position at which paper cannot be stacked on the paper tray, and has a dimension that is 1 to 2 mm smaller than the predetermined dimension of the first convex body. The paper receiving apparatus according to claim 1, wherein the paper receiving apparatus protrudes only by the distance.