JPS6121910B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording paper sorting device for an office machine used for sorting paper discharged from an office machine such as a copying machine or a copying machine. It is an object of the present invention to provide a recording paper sorting device for an office machine that can quickly and finely classify and store paper in a tray as necessary.

In this invention, a plurality of trays are stacked on a frame mounted on an office machine so as to be able to reciprocate in the vertical direction, and a lead cam having a spiral groove opening on both upper and lower end surfaces is formed on the outer periphery of the tray. Protrusions are provided on both sides of the tray, and the protrusions of the tray are intermittently inserted into the grooves of the lead cam at predetermined rotational angles of the lead cam from the biased direction. As a result, the tray is sequentially reciprocated in the vertical direction while leaving an interval between the tray and the adjacent tray in the next stage to accommodate the paper output from the office machine. The recorded paper is divided into categories such as recorded content,
This sorting work can be done automatically and quickly while the office machine is in use, and furthermore, a feed pawl having a pawl that approaches the end face of the lead cam is provided, and the pawl of the feed pawl allows the tray to be pushed out. By starting to press the protrusion against the end face of the lead cam at a timing before the protrusion coincides with the end of the groove, the operation of feeding the protrusion into the groove can be carried out more reliably.

An embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a copying machine which is an office machine, although only a portion thereof is shown.The copying machine 1 is provided with a discharge roller 3 for discharging paper 2 and a push roller 4 on the discharge side, and a push roller 4 on the discharge side. A flanged pin 5 and a fixing part 6 are provided on one side. However,
A frame 7 is detachably attached to the ejection side of the copying machine 1. That is, on the front surface of the frame 7, a hooking hole 8 is formed in which a hole larger than the head of the flanged pin 5 and a hole that substantially coincides with the neck of the flanged pin 5 are connected in a daruma shape. A mounting piece 10 fixed to the fixing portion 6 is formed.

Next, the frame 7 is provided with a conveyance roller 11 and a push roller 12 for conveying the paper 2. A gear 13 is connected to the discharge roller 3, a gear 14 is connected to the conveyance roller 11, and an idle gear 15 meshing with these gears 13 and 14 is connected to the conveyance roller 11 as shown in FIG. It is held by an arm 17 supported by a coaxially arranged shaft 16. This arm 17
is biased by a spring 18 to cause the idle gear 15 to mesh with the gear 13.

Furthermore, the frame 7 includes a plurality of trays 19.
are stacked on top of each other and are held movable up and down. These trays 19, as shown in FIG.
The front edge and the right edge are bent into an L-shape, and the rear edge is bent into a U-shape for sufficient reinforcement, triangular openings 20, 21, 22 are formed in the center, and a V-shaped notch 23 is formed on the left side. It is lighter and lighter. Each opening 20, 21, 22 has paper 2 of different size that is guided on one side by a guide piece 24 and is conveyed.
It is defined in a triangular shape that tapers toward the feeding direction of the sheets 2a, 2b, and 2c, and its slanted edge 25 is sloped in a direction from the inside to the outside of the sheets 2a, 2b, and 2c. Similarly, the sheets 2b and 2c of the notch 23
The inclined edge 26 on the side opposite to the leading edge of is also inclined in the same direction. A support portion 28 that smoothly projects is formed by stamping on the upper surface of the bent portion 27 at the rear of the tray 19. Furthermore, protrusions 29 are provided on both front sides of the trays 19 from the lowest tray 19a to the second and higher trays.
are formed, and a cylinder 30, which is a protrusion, is inserted into these protrusions 29. Bottom tray 19a
is urged upward by a spring 31 as shown in FIG.

Next, the drive mechanism 32 will be explained with reference to FIGS. 1, 2, and 3. That is, a pair of left and right drive shafts 33 are supported on both sides of the frame 7, and a motor 14 that can freely rotate in forward and reverse directions is mounted above these drive shafts 33.
A sprocket 35 to which the rotational force of the sprocket is transmitted by a chain 35 is fixed.

A lead cam 38 having a spiral groove 37 extending from the lower end to the upper end formed on the outer periphery is fixed to the middle part of the drive shaft 33, and the lower end has a high part 39a from which a part of the outer periphery protrudes downward. cam 3
Further, a slide plate 40 is supported on these drive shafts 33 so as to be vertically movable while being urged upward by a spring 41. The cylinder 30 of the tray 19 is attached to these slide plates 40.
A long hole 42 for protruding is formed.
Further, on both sides of the frame 7, a slide plate 43 having a protrusion 43a pushed down by the high part 39a of the cam 39 at the lower part is provided with a pin 44.
The stroke is defined by the elongated hole 45 and the elongated hole 45, and it is slidably mounted while being biased upward by a spring 46. These slide plates 4
A feeding claw 47 having a claw portion 47a at the upper end is rotatably attached to the feeder 3. These feed claws 47
is biased by a spring 48 so that its tip enters between the cylinders 30 of the tray 19, but its protrusion amount is regulated by a stopper pin 49.

In such a configuration, the paper 2 copied by the copying machine 1 is ejected by the ejection roller 3 and the push roller 4, and furthermore, the rotation of the gear 13 is transmitted to the conveyance roller 1 via the idle gear 15 and the gear 14.
1, the paper is transported by the transport roller 11 and the push roller 12, and is stored in the tray 19 on the uppermost stage.

When the drive mechanism 32 is in a stopped state, each tray 19 is urged upward by the lowermost tray 19a which is urged by the spring 31, but the cylinder 30 of the uppermost tray 19 is joined to the lower surface of the lead cam 38. As a result, each tray 19 remains stationary at a fixed position. Accordingly, the slide plate 40, which is urged upward by the spring 41, is also prevented from moving upward.

When storing the paper 2 in the next tray 19, the leading edge of the uppermost tray 19 is positioned above the lead cam 38, which is above the transport path of the paper 2, and the leading edge of the next tray 19 is placed above the lead cam 38. 3
Position it at the bottom of 8. That is, the motor 34 is driven to rotate the drive shaft 33 together with the lead cam 38 once. During this time, the cam 39
9a to push down the slide plate 43, the feed pawl 47 separates from the cylinder 30 due to the component force generated from the contact force with the stopper pin 49, and when the slide plate 43 returns to the upward position due to the force of the spring 46, the feed pawl 47 is released by the spring. 48 returns inward and begins to press the cylinder 30 with the claw portion 47a against the lower surface of the lead cam 38. Immediately after that, the cylinder 30 of the uppermost tray 19 is positioned in the groove 37 and the force of the spring 31 The cylinder 30 is fed into the groove 37 and rotated by the lead cam 38.
8 and the lower end of the spring 41. During this time, even if the cylinder 30 of the tray 19 in the next stage receives an upward force, it lags behind by one pitch of the groove 37. In this embodiment, the pitch of the groove 37 matches the height of the lead cam 38, and each time the lead cam 38 is rotated, the tray 19 is raised one by one. In addition, the lead cam 38 increases by the amount that it rises.
The cylinder 30 between the lower surface of the tray 19a and the lowest tray 19a
The number decreases by one, but each time the feed claw 47 moves away from the cylinder 30, the slide plate 40 moves closer to the cylinder 30.
It is intermittently raised by the force of the spring 41 with the same pitch as the outer diameter of. Therefore, a necessary interval for conveying the paper 2 is ensured between the trays 19 that are vertically adjacent to each other with the lead cam 38 in between. In this way, the trays 19 are sequentially sent above the lead cam 38, and the slide plate 40 is intermittently raised by the force of the spring 41. However, the tray 19a at the lowest stage rises close to the lead cam 38, but is placed above the lead cam 38. There is no need to move it to . However, it may be moved above the lead cam 38 like the other trays 19. Further, the cylinder 30 of the tray 19 that has moved above the lead cam 38 is urged downward by the force of the spring 41, and the lowermost cylinder 30 is pressed against the upper surface of the lead cam 38 due to the weight of the stacked trays 19. Therefore, by rotating the lead cam 38 in the opposite direction, the cylinder 30 is fed into the groove 37 when the upper end of the groove 37 and the cylinder 30 coincide with each other, and the tray 19 having the cylinder 30 is moved between the upper tray 19 and the upper end of the cylinder 30. The paper 2 is moved to the lower side of the lead cam 38 while leaving a necessary interval for storing the paper 2. Even if the rotation direction of the drive shaft 33 changes, the cam 3
Each time 9 moves the slide plate 43 up and down, the feed claw 47
The operation of retracting clockwise is as described above, and the retraction timing is such that the cylinder 30 moves toward the lead cam 3.
It matches when descending from the bottom surface of 8.

In this way, the tray 19 is
How to use the trays 19 to reciprocate in the vertical direction while leaving a space between each tray 19
While feeding the paper upward, for example, the first page of paper with the same recorded content is stored one by one in each tray 19, and then,
While feeding each tray 19 upward, the second page of paper is stored in each tray 19 one by one, and then each tray 19 is loaded again.
By repeating the operation of feeding the paper sheet 9 upward and storing the third page in each tray 19, the work up to just before the binding work in the bookbinding work process can be automatically performed while the copying machine 1 is in use. . In such a case, the rotation of the motor 34 may be controlled to match the per-sheet copying speed of the copying machine 1 with the cycle time in which one tray 19 moves.

In addition, by intermittently rotating the read cam 38, a plurality of sheets of paper with the same recorded content are stored in a specific tray 19, and each time the recorded content changes, the tray 19 is
9 can also be moved and stored in another tray 19. Alternatively, the tray 19 can be used to sort by distribution destination, number of copies, paper size, etc. In any case, it is possible to sort them finely as necessary.

The tip of each tray 19 moves vertically using the bent portion 27 at the rear of the trays 19 stacked on top of each other as a fulcrum.
8, the contact area is small and smooth vertical movement is possible without generating any abnormal noise. Such an effect becomes more remarkable when the support part 50 is formed by fixing another piece having a small coefficient of friction in place of the support part 28, as shown in FIG.

Also, paper 2 slides into tray 19, but paper 2 slides into tray 19, but
Paper 2 is inserted into the openings 20, 21, 22 as shown in Figure a.
There is no opening edge facing the leading edge of the paper 2, and the inclined edge 25 is slightly inclined in the composite direction of the direction facing the leading edge of the paper 2 and the feeding direction of the paper 2, but the inclination in the feeding direction is greater. The paper 2 is strongly tilted toward the outside of the paper 2 as it moves toward the direction in which the paper 2 is fed.
22 and can be stored smoothly without getting caught.
Similarly, the paper 2 will not get caught on the inclined edge 26 of the notch 23. The advantages of such an effect can be understood when comparing the structure shown in FIGS. 7b and 7c. That is, the opening 51 shown in FIG. 7B is rectangular and has an opening edge 52 that faces the leading edge of the paper 2, and there is a possibility that the paper 2 may get caught on this opening edge 52. Further, what is shown in FIG. 7c is a triangular opening 53, the inclined edge 54 of which is inclined inward of the paper 2 as it goes in the direction in which the paper 2 travels. Therefore, one side of the front edge of the paper 2 may enter the opening 53 and be bent downward by the inclined edge 54, causing the paper to become jammed.

Note that when a plurality of grooves 37 are formed on the lead cam 38, the lead of the grooves 37 may be increased to ensure the necessary interval for storing sheets between the upper and lower trays 19.

Since this invention is configured as described above, by rotating the lead cam continuously or intermittently and changing the rotation direction, it is possible to move a plurality of trays in the vertical direction while ensuring the interval between the trays to be discharged from the office machine. Therefore, it is possible to automatically align the pages in the bookbinding process, and also to sort finely by content, distribution destination, etc. as necessary, and such sorting work can be done by office machines. This can be done automatically and quickly while using the tray, and furthermore, the feed claw can connect the protrusion of the tray to the end face of the lead cam to ensure that the protrusion is fed into the groove. It has the following effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a vertical side view, Figure 2 is a perspective view of the drive mechanism, Figure 3 is a partially exploded perspective view showing the operating mechanism of the feed claw, and Figure 4 is a partial exploded perspective view showing the power transmission mechanism to the conveyance roller. 5 is a perspective view of the tray, FIG. 6 is a side view showing another example of the support portion formed at the rear of the tray, and FIG. FIG. 1... Copying machine (office machine), 2... Paper, 7... Frame, 19, 19b... Tray, 30... Cylinder (protrusion), 37... Groove, 38... Lead cam.

Claims (1)

[Scope of Claims] 1. A frame is provided that is detachably attached to the paper output side of an office machine for recording characters, patterns, etc., and a plurality of trays for storing paper discharged from the office machine are connected to each other in this frame. Lead cams are provided on both sides of the tray to be stacked so as to be able to reciprocate in the vertical direction, and lead cams are provided on both sides of the tray, the lead cams having spiral grooves on the outer periphery that are open on both the upper and lower end surfaces, being able to freely rotate in forward and reverse directions with a substantially vertical axis. , a protrusion that is sent into the upper end of the groove by a downward urging force including its own weight on both sides of at least the trays from the lowest tray to the second and higher trays, and is also sent into the lower end of the groove by an upward urging force. A recording paper sorting device for an office machine, characterized by the following: 2. A frame is provided that is detachably attached to the paper output side of an office machine for recording characters, patterns, etc., and a plurality of trays for storing paper discharged from the office machine are stacked on top of each other on this frame, and the paper is stacked vertically on this frame. A lead cam is provided on both sides of the tray so as to be reciprocally movable, and a lead cam having a spiral groove formed on the outer periphery with openings on both upper and lower end surfaces is provided on both sides of the tray so as to be rotatable in forward and reverse directions about a substantially vertical axis. A protrusion is provided at one end of the frame to be fed into the upper end of the groove by a downward urging force including the own weight of the second or higher tray, and is sent into the lower end of the groove by an upward urging force. The protrusion includes a feed pawl that has a pawl close to the end surface of the lead cam and starts pressing the protrusion against the end surface of the lead cam with the pawl at a timing before the protrusion coincides with one end of the groove. A recording paper sorting device for an office machine, characterized in that it is installed so that it can move forward and backward within the vertical movement trajectory of the office machine.