JP2884536B2 - Media accumulation mechanism - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium stacking mechanism for sequentially stacking and stacking sheet-like media separated and conveyed one by one in an stacking section having side guides.

[Conventional technology]

FIG. 4 is a side view showing this type of conventional medium collecting mechanism,
FIG. 5 is a plan view of the main part.

 In the figure, 1 is a medium.

Reference numeral 2 denotes an accumulation unit for accumulating the medium 1, and this accumulation unit 2
Is composed of a single integrated guide plate 3 forming the front, bottom and rear surfaces thereof, and side guides 4 and 5 forming left and right side surfaces. On the upper part, slopes 4a, 4b and 5a, 5b are formed, respectively.

Reference numeral 6 denotes a plurality of pulleys provided along the entrance of the medium 1 provided at the upper portion of the front surface of the stacking unit 2. Reference numeral 7 denotes a plurality of scraping rollers provided coaxially with the pulley 6, and the scraping rollers 7 are provided on the outer peripheral portion. It has scraping blades 7a.

Reference numeral 8 denotes a drive pulley provided diagonally above the pulley 6, 9
Is a feed belt wound around the pulley 6 and the driving pulley 8.

Reference numeral 10 denotes a plurality of idle pulleys corresponding to the respective pulleys 6. The idle pulley 10 comes into contact with the respective pulleys 6 via the feed belt 9, and a part of the outer periphery is provided in front of the contact portion with the feed belt 9. , And is arranged so as to apply a predetermined tension to the feeding belt 9.
These 6 to 10 pulleys and a feeding belt constitute a feeding means for the medium 1.

Reference numeral 11 denotes a transport guide plate provided to guide the medium 1 to a contact portion between the feed belt 9 and the pulley 10, and one end of a leaf spring 12 is fixed to one end of the transport guide plate 11, and To the other end of the transport guide plate 11, one end of a leaf spring guide 13 provided so as to be located on the stacking unit 2 is fixed.

Here, when the medium 1 is fed into the stacking unit 2 by the feed belt 9 and the idle pulley 10, the leaf spring 12 is lifted upward by the medium 1, and the medium 1 comes off from between the feed belt 9 and the idle pulley 10. Sometimes recover,
The shape and spring force of the leaf spring 12 are set so as to press the medium 1 from above, and the other end of the leaf spring 12 is formed in a T-shape as shown in FIG. It is inserted from below into the hole 13a provided at the end, thereby restricting the downward movement and the lateral movement.

 Next, the operation of the above configuration will be described.

The medium 1 conveyed one by one by a not-shown conveying means enters between a feed belt 9 rotating by a motor (not shown) via a driving pulley 8 and a conveyance guide plate 11.

Then, the medium 1 is nipped by the contact portion between the feed belt 9 and the idle pulley 10, and the conveying force of the medium
And is guided by the slopes 4a, 4b and 5a, 5b of the side guides 4, 5, respectively.

At this time, the leaf spring 12 is pushed up by the feeding belt 9 and the medium 1 conveyed by the idle pulley 10 on the pulley 6, and when the rear end of the medium 1 passes between the feeding belt 9 and the idle pulley 10, To prevent the spring 12 from recovering and pushing down the medium 1 and further avoiding the front end of the following medium 1 colliding with the rear end of the medium 1, the pulley 6
The scraping blade 7a of the scraping roller 7 rotating integrally with the roller 1 strikes the rear end of the medium 1 downward.

The medium 1 is sequentially accumulated in the accumulation unit 2 by the above operation.

[Problems to be solved by the invention]

However, the above-described conventional medium accumulation mechanism has the following problems.

 FIG. 6 is a front view of the main part showing the problem.

That is, in the above-described conventional mechanism, when a medium 1 having a lateral shift or a skew is conveyed, the medium 1 has a side portion between the entrance of the stacking unit 2, that is, between the feed belt 9 and the idle pulley 10. Side guide 4 immediately after passing
Or you'll get to 5.

Therefore, even if a pressing operation by the leaf spring 12 or a knocking operation by the scraping blade 7a of the scraping roller 7 is applied to the medium 1, the side portion of the medium 1 does not completely fall into the stacking unit 2 and As shown in FIG. 6, the media 1 may be stuck on the slopes 4b or 5b of the side guides 4 or 5, which not only causes the media 1 to be accumulated irregularly, but also causes the media to be stuck on the slopes 4b or 5b on the sides. There is a problem that the subsequent medium 1 collides with 1 to cause a jam or the like.

The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a highly reliable medium accumulation mechanism that can reliably drop and accumulate media in an accumulation unit without becoming uneven. Is what you do.

[Means for solving the problem]

In order to achieve this object, the present invention provides an accumulating portion having a pair of left and right parallel side guides having a slope on an upper portion,
A feeding means provided at an entrance of the stacking section, wherein a sheet-shaped medium conveyed one by one is fed into the stacking section by the feeding means, and stacked by the side guide to be stacked and stacked. One end of one of the two parallel slide links is attached to one of the two side guides, and the other end of the other slide link is attached to the other of the two side guides. The two side links are rotatably connected to the two slide links, respectively, so that the side guides are supported so that the distance can be changed by approaching and separating while keeping the parallel state. A link mechanism, a motor that rotates when the medium is accumulated, and an intermediary between the motor and one of the slide links of the link mechanism. And a lever for continuously reciprocating the two side guides via the link mechanism so as to change the distance between the two side guides by swinging by the rotation of the motor when the medium is accumulated. .

(Operation)

In the present invention having the above-described configuration, a medium having a lateral shift or a skew is sent to the stacking unit by the medium feeding unit, and the side of the medium rides on one side guide, thereby being caught on the slope of the side guide. In this case, when the side guides that are continuously reciprocating reciprocally move so that the gap changes due to the rotation of the motor and move in the direction in which the gap increases, the side of the medium slides down from the slope of the side guide, and When the side guides move closer to each other and move in a narrowing direction, the side portions of the medium are pushed by the side guides, whereby the medium is aligned with another medium and stacked on the stacking unit.

Therefore, according to this, since the media can be reliably dropped and accumulated in the accumulation portion without becoming uneven, the subsequent media may collide with the media whose side portion is caught on the slope of the side guide as in the related art. As a result, it is possible to prevent a jam or the like caused by the above, so that a highly reliable medium accumulation mechanism can be obtained.

〔Example〕

 Embodiments will be described below with reference to the drawings.

FIG. 1 is a side view showing an embodiment of a medium collecting mechanism according to the present invention, and FIG. 2 is a plan view of a main part of the embodiment of FIG.

In the figure, 1 is a medium, 2 is an accumulation section, 3 is an accumulation guide plate, 4 and 5 are side guides, 4a and 4b and 5a and 5b are slopes,
6 is a pulley, 7 is a scraping roller, 7a is a scraping blade, 8 is a driving pulley, 9 is a feed belt, 10 is an idle pulley, 11 is a conveyance guide plate, 12 is a leaf spring, and 13 is a leaf spring guide. Except that the side guides 4 and 5 are supported by a link mechanism, which will be described later, they are configured in the same manner as a conventional mechanism.

Reference numeral 14 denotes a link mechanism for reciprocating the side guides 4 and 5 so as to change the distance therebetween.

The link mechanism includes side links 4 and 5 fixedly supported at one end thereof and slide links 15 and 16 arranged in parallel with each other, and rotary links 19 and 20 rotating around fulcrums 17 and 18, respectively. Where one end of each of the rotating links 19 and 20 is connected to the slide link 15 by pins 21 and 2 respectively.
2 are rotatably connected via
Is rotatably connected to the slide link 16 via pins 23 and 24, respectively.

Reference numeral 25 denotes a motor as a drive source of the link mechanism 14, reference numeral 26 denotes an arm having one end fixed to a shaft of the motor 25, and reference numeral 27 denotes a pin provided at the other end of the arm 26.

Reference numeral 28 denotes a lever that rotates about a fulcrum 29.
Engages a U-shaped groove provided at one end thereof with a pin 30 provided on the slide link 15, and fits a long hole provided at the other end with a pin 27 on the arm 26. I have.

In this configuration, when the arm 26 is rotated in a predetermined direction by the motor 25, the lever 28 swings in the direction of the arrow about the fulcrum 29 in response thereto, whereby the side guides 4 and 5 Are in position A-
A reciprocating motion is continuously made between A 'and BB'.

That is, when the lever 28 swings in the direction of the arrow (a),
The slide link 15 moves in the direction of the arrow (b), and the side guide 4 changes from position A to position A '.

The rotation of the slide link 15 in the direction of the arrow (b) causes the rotation links 19 and 20 to rotate about the fulcrums 17 and 18, respectively, whereby the slide link 16 moves in the direction indicated by the arrow (c). , The side guide 5 changes from position B to position B '.

When the lever 28 swings in the direction of the arrow (d), the slide link 15 moves in the direction of the arrow (e), and the side guide 4 returns from the position A 'to the position A, and the rotating links 19, 20 at this time. As a result, the slide link 16 moves in the direction indicated by the arrow (f), and the side guide 5 also returns from the position B 'to the position B.

The approach and separation movements of such side guides
The rotation is continuously performed.

 Next, the operation of the above configuration will be described.

3 (a), 3 (b), and 3 (c) are front views showing the operation of the above-described configuration.

First, when the medium 1 is accumulated, the link mechanism 14 is
Is driven, and the side guides 4 and 5 are moved to the position A shown in FIG.
-A 'and between positions BB'.

In this state, the mediums 1 conveyed one by one by a conveying means (not shown) are stacked in the stacking unit 2, but the medium 1 conveyed in a state in which the medium 1 has not been displaced or skewed is conventionally used. Since the recording is performed by the same operation as described above, the description thereof will be omitted. Here, the recording of the medium 1 in which the lateral displacement or skew has occurred will be described.

When the medium 1 having been displaced or skewed is conveyed, the medium 1 is transferred to the side guide 4 or 5 immediately after the side of the medium 1 passes through the entrance of the stacking unit 2, that is, between the feeding belt 9 and the idle roller 10. I will get on.

Therefore, even if a pressing operation by the leaf spring 12 or a knocking operation by the scraping blade 7a of the scraping roller 7 is applied to the medium 1, the side portion of the medium 1 does not completely fall into the stacking unit 2 and 3 As shown in FIG. 3A, the slope 4b of the side guide 4 (or the slope of the side guide 5).
5b), the side guides 4, 5 reciprocate between the positions AA 'and the positions B-B' as described above. As shown in b), the side guides 4 and 5 move from the positions A and B to the positions A 'and B', respectively, so that the interval between the side guides 4 and 5 is widened. It slides down from the slope 4b of the guide 4 (or the slope 5b of the side guide 5).

After that, as shown in FIG.
5 moves from the positions A 'and B' to the positions A and B, respectively, when the side of the medium 1 is pushed by the side guide 4 (or the side guide 5), whereby the medium 1 And are aligned with the medium 1.

〔The invention's effect〕

As described above, the present invention includes a stacking section having a pair of left and right parallel side guides having a slope on the upper side, and a feeding means provided at an entrance of the stacking section, and the paper conveyed one by one. In a medium stacking mechanism in which a leaf-shaped medium is fed into the stacking section by the feeding means and stacked by the side guide, one end of one of the two parallel slide links is connected to the two side guides. Attach to one and attach the other end of the other slide link to the other of the two side guides, and connect both ends of two rotating links that rotate about a central portion to the two slide links so as to be rotatable, respectively. A link mechanism that supports the two side guides so as to be able to change the distance by approaching and separating while keeping the parallel state, A motor that rotates when the medium is accumulated, and is interposed between the motor and one of the slide links of the link mechanism. A lever that continuously reciprocates the guide so that the distance between the guides changes, and a medium that has been displaced or skewed during medium accumulation is fed into the accumulation section by the medium feeding means, and the side of the medium is moved to one side. When the side guide reciprocating continuously moves in a direction in which the interval is widened so that the interval is changed by rotation of the motor, when the side guide is caught on the slope of the side guide by riding on the side guide, The sides slide off the slope of the side guides, and the sides of the media are It pushed by de, thereby so that the medium is integrated aligned with other media.

Therefore, according to this, since the media can be reliably dropped and accumulated on the accumulation portion without becoming uneven, the following media are caused by the following media colliding with the media having the side portion caught on the side guide as in the related art. The effect that a jam can be prevented is obtained, and the effect that a highly reliable medium accumulation mechanism can be provided is obtained.

Further, according to the present invention, since the link mechanism is composed of two parallel slide links and two rotary links, the number of parts is small and the structure is simple even if a lever for transmitting the power of the motor to the link mechanism is included. And the effect that no noise is generated is obtained.

In addition, the present invention has a structure in which both side guides are supported by a link mechanism so that the distance between them can be changed by approaching and separating while keeping the parallel state, so that the apparatus does not increase in size, and at the time of medium accumulation. Since both side guides are continuously moved in parallel by the motor regardless of the position of the medium, an effect that control is easy can be obtained.

[Brief description of the drawings]

1 is a side view showing an embodiment of a medium collecting mechanism according to the present invention, FIG. 2 is a plan view of a main part of the embodiment of FIG. 1, FIG. 3 is a front view of a main part showing the operation of the embodiment, FIG. 4 is a side view showing a conventional example, FIG. 5 is a plan view of a main part thereof, and FIG. 6 is a front view of a main part showing problems of the conventional example. DESCRIPTION OF SYMBOLS 1 ... Medium 2 ... Stacking part 3 ... Stacking guide plate 4, 5 ... Side guide 4a, 4b, 5a, 5b ... Slope 6 ... Pulley 7 ... Scrape roller 7a ... Scrape blade 8 ... Drive Pulley 9 ... Sending belt 10 ... Idle pulley 11 ... Transport guide plate 12 ... Leaf spring 14 ... Link mechanism 15,16 ... Slide link 19,20 ... Rotating link 25 ... Motor 26 ... Arm 28 ……lever

Claims (1)

(57) [Claims] An accumulating section having a pair of left and right parallel side guides having an inclined surface on an upper portion, and a feeding means provided at an entrance of the accumulating section, and a sheet-shaped medium conveyed one by one. In a medium stacking mechanism for feeding the sheet into the stacking unit by the feeding means and stacking the sheets by the guide of the side guide, one end of one of the two parallel slide links is attached to one of the side guides. The other end of the other slide link is attached to the other of the two side guides, and both ends of two rotating links that rotate around a central portion are rotatably connected to the two slide links, respectively. A link mechanism that supports the guide so that the distance can be changed by approaching and separating while keeping the parallel state; and A rotating motor, interposed between the motor and one of the slide links of the link mechanism, and oscillated by the rotation of the motor at the time of stacking of the media, so that the both side guides are spaced from each other via the link mechanism. And a lever that continuously reciprocates so as to change.