JPS62171843A - Automatic feeder for sheetlike article - Google Patents

Abstract

PURPOSE:To make a different sized sheetlike article interruptable, by installing a manual paper feeding part which feeds a delivery part with the sheetlike article by hand at a time when a paper feed board exists in a decent position. CONSTITUTION:A manual feed unit 75 is attached to the side of a device body 2a. This manual feed unit 75 is provided with a boxlike body 76 whose top and front end are opened, two grooves 77a being tilted upward at the front end are formed in both side plates 77 of this body 76 so as to be opposed to each other. And, inside this body 76, a plate 78 for sheetlike article mounting use is held so as to cause pins 79 installed in rear end upper and lower parts to be situated in these grooves 77a. Therefore, a mounting plate 78 is made retractable from a front end of the body 76 along these grooves 77a. After a paper feed board 4 goes down, when the manual feed unit 75 is set to a tilt-down position II and the mounting plate 78 is pushed forward, an upper rotary plate of a side guide plate 55 is rotated, and positioned in the lower side of a paper feed belt 16. Accordingly, if transfer paper is mounted on an upper part of the plate 78, different sized sheets of the transfer paper are interruptedly feedable.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic feeding device for sheet-like materials, and in particular, to an automatic feeding device for sheet-like materials, and in particular, to an automatic feeding device for sheet-like materials, and in particular for feeding a large number of sheet-like materials in order from top to bottom. This invention relates to an automatic feeding device for sheet-like materials.

[Prior art]

Generally, it is used in recording devices such as electrophotographic copying machines and simple printing machines, and in feeding devices for sheet-like materials such as transfer paper, photosensitive paper, printing paper, etc., the upper part of the sheet-like material stacking member is A large number of sheet-like objects are placed, and the stacked sheet-like objects are moved from top to bottom using a rotating feed roller (belt), other air suction system, or an electrostatic suction system.
The sheets are fed in the order of their address, and after being fed out one by one, the sheet loading member is raised one after another, so that it is always maintained at a substantially constant standard height in relation to the sheet feeding mechanism. This allows the stacked sheets to be fed to the last one.

Normally, as sheet stacking members, several cassettes each capable of accommodating about 200 to 250 sheets of transfer paper for a normal recording device are provided above and below.

Furthermore, Special Publication No. 1979-29279, Special Publication No. 1979-29279,
Year-2'0200 Publication, Special Publication 1986-1166, 3
There is an elevating sheet feeding tray system as shown in Japanese Patent Publication No. 1988-25345 and Japanese Utility Model Application Publication No. 1983-336.

[Problem that the invention seeks to solve]

However, in the case of the above-mentioned cassette type, for example, as mentioned above, the transfer paper for an ordinary electrophotographic copying machine can be used at most 200 to 200 yen.
The storage capacity is limited to about 50 sheets, and as recording devices such as electrophotographic copying machines and simple printing machines become faster, it is necessary to frequently replenish sheet-like materials, resulting in extremely low work efficiency. In addition, if the cassettes are multi-tiered, the storage capacity of sheet materials can be increased, but each cassette must be provided with a feeding mechanism and a guide plate, and as a result, the storage capacity of sheet materials can be increased. The problem is that a large space is required compared to the capacity.

Furthermore, it is possible to increase the capacity of one cassette, but if the storage capacity of the cassette is increased, the leading edge of the loaded sheet will be moved from the bottom of the cassette to the position of the feeding mechanism as the loaded sheet goes from the upper layer to the lower layer. However, it is extremely difficult to do this with high precision, which may result in paper feeding failures such as no-feed, double-feed, bending, or timing misalignment. There was a problem.

In the case of an elevating feeding system that can handle a large capacity, the paper refeeding roller (registration roller) and elevating feeding table are separate units and can be maintained while attached to an electrophotographic copying device, etc. Therefore, if a paper jam occurs, it is difficult to dispose of it, and
The problem is that the paper feed section has become larger, the number of assembly steps has increased, and the efficiency of the assembly work has been poor.

Furthermore, in the case of the above-mentioned elevating paper feed table system, when copying a small amount of different sizes by interrupt, the paper feed table is lowered and the sheet-like object placed thereon is adjusted to the desired size. It is extremely inconvenient to replace the paper and then have to raise the paper feed tray.Therefore, manual paper feeding cannot be performed, making it very inconvenient to make small quantities of copies of different sizes.

This invention solves the problems of the conventional ones as described above, and makes maximum use of the limited space of recording devices such as electrophotographic copying machines and simple printing machines, and, for example,
It is smaller than the conventional cassette type even if it accommodates a large amount of sheet-like materials of 500 to 3000 sheets or more, and
By ensuring that the feeding conditions for sheet-like materials are always stable and uniform from the upper layer to the lower layer, paper jams are prevented from occurring, and even if a jam occurs, the entire sheet can be pulled out. In addition, the process can be easily performed, and the assembly can be easily performed, reducing the number of assembly steps and increasing the efficiency of the assembly work.Furthermore, the overall height and width can be reduced, making the whole compact. To provide an automatic feeding device for a sheet-like material, which can be used for printing a small number of copies of different sizes, and can also feed a small amount of different sizes by manual feeding.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention is an automatic feeding device for sheet-like materials attached to the main body of a recording device, etc., which includes a paper feed tray that can move up and down, and a paper feed tray that is movable up and down. and a feed-out unit that sequentially feeds the sheet-like objects placed on the paper feed table starting from the topmost sheet, and when the paper feed stand is in the lowered position, the sheet-like objects are manually fed into the feed-out unit. It has a configuration that includes a manual paper feed section for feeding objects.

(Function) By adopting the above-mentioned means, this invention can manually feed a sheet-like object of a size different from the size being used, so it is very easy to feed a sheet-like object of a different size than usual by interrupting. This means that it can be sent to

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

The drawing shows an automatic sheet feeding device according to the present invention. First, the automatic sheet feeding device, which is the upper unit, will be explained. This automatic sheet feeding device has the following features: An elevating sheet feeding table section 1 that loads a plurality of sheets and moves up and down; a feeding section 10 that sequentially feeds out the sheets stacked on the elevating sheet feeding sheet section 1 starting from the highest sheet; It also has a paper refeeding section 35 that temporarily waits for the shaped material and feeds it out at a predetermined timing.

The elevating paper feeding tray 1 can be pulled out horizontally from a machine pedestal 2 of an electrophotographic copying machine, etc., and has side plates 3 on both sides.
A has a paper feed stand 4 located above a machine stand 3 of an automatic feeding device for sheet-shaped materials that is set upright, and this paper feed stand 4 has a side plate 3a on both sides thereof that is higher than the side plate 3a of the machine stand 3. It is connected to the rear end of the support member 5 located on the outside through a screw 6, and the front end of the support member 5 is connected through a screw 7 in a forwardly inclined elongated hole 3b provided in the side plate 3a. A part of the side plate 3a of the machine stand 3 is located between both ends of the paper feed stand 4 and the support member 5.

Further, two support rollers 8a and 8b in the vertical direction rotatably provided inside the support member 5 are connected to the side plates 3 of the machine base 3.
By being located in the lift guide plate 9 parallel to the elongated hole 3b at the outer rear end of the paper feed table 4, the paper feed tray 4 can be moved upward while remaining in its initial forwardly inclined state ( It is guided by the lift guide plate 9 and can move up and down while moving forward.

The positional relationship between the two upper and lower support rollers 8a, 8b with respect to the paper feed table 4 is as shown in FIG.
If the distance between 8b and the rear end of paper feed table 4 is b, then a:b=l
:l~1:1.2.

A feeding section 10 is provided in the upper part between the side plates 3a of the machine stand 3 and in front of the sheet feeding table 4, and the feeding section 10 has a shaft 12 connected to a clutch 11 at one end. is constructed, and a roller 13 is installed at the center of this shaft 12.
is attached to this shaft 12, and furthermore, a feed unit 14 is provided and another roller 15 is provided, and a paper feed belt 1 is provided between this other roller 15 and the α-roller 13.
6 is stretched.

The feeding unit 14 is provided with a paper feed roller 17 which is movable in the vertical direction via a support plate 18 and which comes into contact with the uppermost sheet material. A rotation transmission belt 19 is stretched between the shaft 15a of the other roller 15 and the shaft 17a of the paper feed roller 17 so as to rotate in synchronization with the belt 16.

The machine stand 3 at the front end of the paper feed table 4 is provided with a front end guide plate 2° that is inclined forward in order to come into contact with the front end of the sheet-like object placed on the upper part of the paper feed table 4. In front of this front end guide plate 20 is a double feed prevention roller 21 for intermittently rotating a double feed prevention roller 21 which is pressed from below against the paper feed bell l-16 stretched between the rollers 13 and 15. An intermittent rotation mechanism is provided.

A mechanism for intermittently rotating the double-feed prevention roller 21 is shown in FIG. 7, in which the center portion is supported by a shaft 24 on a standing plate 22 erected on the machine stand 3, and one end is connected to the paper feed stand. Another link plate 26 is connected to the other end of the link plate 23 pushed down by the front end of the link plate 23 via a shaft 25 . Ratchet push-up pawl 2
8 is provided, and the standing board 22 and the other link board 2 are provided.
A spring 29 is provided between the ratchet 27 and the ratchet 27, and a spring 29 is provided between the ratchet 27 and the ratchet 27. It is provided.

On the other hand, a pair of upper and lower guide plates 31a and 31b are provided in front between one of the rollers 13 on which the paper feed belt 16 is stretched and the double feeding prevention roller 21, and a pair of upper and lower guide plates 31a and 31b are provided between the two guide plates 31a and 3Ib. A pair of upper and lower guide rollers 32a and 32b protruding from the
, 32b has a pair of upper and lower guide plates 33a133b.
A paper refeeding section 35 is provided which is composed of a pair of upper and lower restart rollers 34a and 34b via the upper guide roller 3.
2a, the shaft 37 of the upper restart roller 34a, and one roller 13 on which the paper feed belt 16 is stretched.
The clutch 11 on the shaft 12 is connected via a gear train, and the gear provided on the shaft 37 of the upper restart roller 34a is connected to the drive source of the main body 2a of the electrophotographic copying device etc. when pushed into the main body 2a. It is designed to be connected.

The front end guide plate 20 located at the front end of the paper feed table 4 and the restart rollers 34a, 34. between b.
The paper feed stand 4 is located at the machine stand 3 below the feed mechanism 10.
An actuating member 40 is provided which is a driving source for a mechanism that moves the machine in the vertical direction, and a sprocket 41 provided on this actuating member 40 and a sprocket 42 provided on the upper part of one side plate 3a of the machine base 3. , a sprocket 44 is located slightly behind this sprocket 42 and is attached to a shaft 43 passing through both side plates 3a, 3a.
A sprocket 46 is connected to the sprocket 46 via a sprocket 5 and is also provided on the outside of the other side plate 3a at a position corresponding to the sprocket 41 provided on the actuating member 40, and a sprocket 47 provided on the upper part. Sprocket 48 and striped chain 49 provided on the penetrating shaft 43
These chains 45.
A part of 49 is located between the paper feed table 4 and the support member 5, and outside the side plate 3a of the machine table 3.

The support members 5.5 provided on both sides of the paper feed table 4 are the fifth support members 5.5.
As shown in FIG. A long hole 50a in the vertical direction corresponding to the hole 5a is provided, and two holes 50b are provided at a position corresponding to the long hole 5b in the vertical direction in the support member 5 at a predetermined interval vertically.
is drilled.

Then, by screwing the screws 51 into the screw holes 5a of the support member 5 through the elongated holes 50a of the adjustment plate 50, the adjustment plate 50
is movable and fixed in the vertical direction with respect to the support member 5, and the two holes 5 in the vertical direction of the adjustment plate 50
The pin 52 inserted into the support member 5 passes through the elongated hole 5b in the vertical direction and can be locked to the chino 45.49, so that the chino 45.49 and both support members 5, that is, the paper feed stand 4 is fixed, and the image support member 5 has adjustment plates 50 on both sides thereof.
is located, so that the inclination of the paper feed table 4 in the left and right direction can be adjusted.

Therefore, rough adjustment can be made by changing the engagement position between the bin 52 and the chino 45.49, and
By changing the position of the adjustment plate 50 with respect to the support member 5 using the screws 51, fine adjustment can be made and the paper feed table 4 can be adjusted in the left and right direction.

The relationship between the paper feed tray 4, the support member 5, and the chino 45.49 is as described above.
, 8b, and can move up and down.

8b is located slightly on the rear end side of the central part of the paper feed tray 4 in the front-rear direction.
The support rollers 8a and 8b are connected to the longer side, that is, the side a in FIG. 2.

On the other hand, a pinion 53 is provided on the lower surface of the paper feed table 4, and a side guide plate on which racks 54 and 54 that mesh and engage with the pinion 53 are vertically provided through the holes 4a of the paper feed table 4. The pinion 53 is connected to the lower part of the pinion 55 so that the pinion 53 moves closer and further away from the other as the pinion 53 rotates. The two are connected via a wire 58.

This side guide plate 55 is designed as shown in FIG.
The shaft 7
One end of the spring 73 wound around 1 is fixed to the main body 7o, and the other end is fixed to the rotary plate 72, so that the main body 70 and the rotary plate 72 are held in a continuous state. The rotary plate 72 can be rotated approximately 90 degrees against the biasing force of the spring 73, and at the time of this 906 rotation, the side guide plate 55 is larger than before the rotation.
The height of is reduced by a predetermined height C.

In addition, as shown in FIG.
At the lower end of a, there is a locking piece 60 for the machine base 2 of an electrophotographic copying machine, etc., whose front end is moved upward when the paper feed base 4 is lowered.
A tenth hook member 61 is provided to release the lock from the paper feed table 4, and the rear side thereof is U-shaped so as to extend to the rear of the paper feed tray 4, and when the center portion is pulled rearward, the tenth hook member 61 is provided. A 20th locking member 63 is provided which swings upward upon operation and whose front end is released from locking with the locking piece 62 of the machine base 2 of the electrophotographic copying apparatus.

Note that 65 is a case for covering the rear end of the automatic sheet feeder according to the present invention, and the upper part of this case can be opened, and a bundle of sheets can be inserted when the case is opened. It becomes.

Furthermore, when the manual feeding unit 75 is attached to the main body 2a of the electrophotographic copying apparatus, etc., a manual feed unit 75 is attached to the side of the main body of the electrophotographic copying apparatus or the like.

That is, this manual feed unit 75 has a box-like main body 76 whose top surface and front end are open, as shown in FIG.
Two grooves 77a, 77a whose front ends are inclined upward are formed in both side plates 77, 77 of this main body 76 so as to face each other, and inside this main body 76 there is a groove for placing a sheet-like object. Bins 79 and 79 provided at the top and bottom of the rear end of the plate 78 are held in the grooves 77a, 77a, and therefore the plate 78 for placing the sheet-like object is
Since the pin 79 at the rear end is located in both grooves 77a, 77a, it can be retracted from the front end of the main body 76 along the grooves 77a, 77a.

Next, the operation of the above will be explained.

First, when the paper feed tray 4 is in the lowered position shown in FIG. The engagement with the locking piece 60 of the machine base 2 of the copying machine or the like is released, and the link plate 23 of the mechanism that intermittently rotates the double-feed prevention roller 21 is pushed up by the paper feed base 4, thereby The ratchet push-up pawl 28 provided at the upper end of the other link plate 26 is in contact with the ratchet 27 on the side surface of the double-feed prevention roller 21 (see FIG. 7).

On the other hand, since the device according to the present invention is pushed into the main body of an electrophotographic copying apparatus which is a recording device, the gear train consisting of gears and the like provided on the shaft 37 of the upper start roller 34a can be used in an electrophotographic copying machine or the like. It is designed to be connected to the drive source of the main body.

When the paper feed table 4 is in the lowered position, first, when the handle 56 for external operation is rotated, the pinion 53 is rotated via the pulley 57 and the wire 58, and the rotation of the pinion 53 causes the rack 54 to be rotated. The side guide plates 55.55 move away from each other or approach each other via the . A predetermined number of sheets, such as transfer paper, are placed on the paper feed table 4, and then the actuating member 4 is activated by a command from the operating section of the main body of an electrophotographic copying machine or the like.
0 is started, first the sprocket 41 rotates, and this rotation is transmitted to the sprocket 42 through the chino 45.
44, and the rotation of the sprocket 44 is transmitted to the shaft 4.
3 to sprocket 48, and the rotation of sprocket 48 is transmitted to chino 49 and sprocket 47.
46 will be rotated.

Therefore, when the chino 45, 49 is moved, the chino 45, 49 is integrated with the paper feed tray 4 via the bin 52 of the adjustment plate 50, and therefore rises.

Moreover, during this upward movement, the paper feed tray 4 is moved between support rollers 8a and 8b provided in the vertical direction inside the support member 5 and inside the lift guide plate 9 provided on the outside of both side plates 3a of the machine table 3. Since it is located in the predetermined forward leaning position,
．． It will rise together with 49.

At this time, the transfer paper placed on the top of the paper feed tray 4 is
The front end guide plate 20 is located at the front end of the paper feed tray 4 and is almost perpendicular to the top surface of the paper feed tray 4, so Each transfer paper is lifted with its front edge aligned,
There is no fear that the stacked transfer sheets will shift from each other during this upward movement. At this time, since the chenettes 45 and 49 are connected to the paper feed table 4 on the side a in FIG. 2, the support rollers 8a and 8b does not impose a large load on the paper feed table 4 and can rise smoothly, and the topmost transfer paper comes into contact with the paper feed roller 17 and this is detected. The paper feed tray 4 is stopped from rising when a member (not shown) detects the movement, that is, the actuating member 40
will be locked.

After that, the paper feed roller 17 starts rotating and sends out the uppermost transfer sheet, and the uppermost transfer sheet is placed between the paper feed belt 16 stretched between the rollers 13 and 15 and the double-feed prevention roller. 21, only the uppermost transfer paper is reliably fed, and then passes through the pair of upper and lower guide plates 31.
a.

A pair of upper and lower guide rollers 32a and 32b pass through 31b.
A pair of upper and lower restart rollers (registration rollers)
It reaches between 34a and 34b and is put on standby.

Then, the pair of upper and lower restart rollers 34a, 34 is activated at a predetermined timing in response to a command from an electrophotographic copying device or the like.
b starts rotating and feeds the transfer paper.

When the number of transfer sheets on the feeding tray 4 decreases after the transfer sheets are fed sequentially from the topmost one as described above, the feeding roller 17
When the position of is lowered and a detection member (not shown) detects the lowering of the position, the actuating member 40 rotates and the sprocket 41 and the sprockets 42, 47, 44, 48, 46
The feed table 4 is raised by moving both chains 45 and 49 via the feed table 4, and when the feed table 4 rises by a predetermined amount (approximately 31 degrees), the rise of the feed roller 17 is detected and the raising of the feed table 4 is stopped. That is, the rotation of the actuating member 40 is stopped, and the transfer paper is sequentially fed out starting from the uppermost transfer paper in the same manner as described above.

When the transfer paper on the feeding table 4 runs out, the actuating member 40 is operated again by operating the operating section to lower the paper feeding table 4 to the initial state. When it is in the lowered position, the mechanism that intermittently rotates the double-feed prevention roller 21 by the front end of the feeding table 4 causes the link plate 23 to be pushed up, and the ratchet push-up pawl at the upper end of the other link plate 26 2B is raised and operated via the ratchet 27 to rotate the double feed prevention roller 21 by a predetermined angle, and the tenth locking member 61 is held in an unlocked state to wait until the next command. .

In addition, when a paper feed cassette is provided below the main body of the electrophotographic copying device, a pair of guide plates 9 that open downward are provided.
If the transfer paper is inserted through the rollers 0a and 90'b, the transfer paper will restart the rollers 34a and 34 without using the paper feed table 4.
b.

Furthermore, if the manual feed unit 75 is used, first, the paper feed tray 4 is lowered to the lowered position by the operating member 40, and then the manual feed unit 75 is brought down from the state of ■ in FIG. 6 to the state of ■. When the plate 78 for placing a sheet-like object is pushed forward, the bin 79 at the rear end of the plate 78 for placing a sheet-like object moves forward along the grooves 77a, 77a, and the front end of the plate 78 for placing a sheet-like object moves forward along the grooves 77a, 77a. 55.55 upper rotating plate 72
By rotating approximately 90 degrees against the biasing force of the spring 73, the plate 78 for placing the sheet-like object moves forward without being blocked, and this plate 78 slightly moves the feed roller 17. Since the transfer paper is pushed up and positioned below the paper feed belt 16, if the transfer paper is placed on the upper part of the plate 78 for sheet-like material placement, this transfer paper will be pushed up and placed under the feed roller 1.
After the paper is fed along the plate 78 at step 7, the paper feed belt 16
, the transfer paper passes between the paper feed belt 16 and the double-feed prevention roller 21, passes through a pair of upper and lower guide rollers 32a, 32b, and then passes through the restart roller 34a.
, 34a, and then is fed by restart rollers 34a, 34a which are started and stopped at predetermined timing, and thus the transfer paper can also be fed manually.

Therefore, as described above, it is possible to feed transfer paper of a different size from that on the paper feed table 4 in an intrusive manner, and furthermore, the stack of transfer paper on the paper feed table 4 can be loaded as is. Therefore, when the interrupt work is completed, the manual feed unit 75 can be raised from the state of ■ to the state of This means that paper feeding work can be performed.

As mentioned above, if a bundle of sheets is placed on the paper feed tray 4, the stack of sheets will be fed sequentially starting from the top one, and if the paper feed tray 4 is not used, the lower sheet will be fed. A paper unit can be used; otherwise, a manual feed unit provided in the main body 2a of an electrophotographic copying machine or the like can be used; Therefore, even if a paper jam occurs, the operability of handling the jam is greatly improved.

〔Effect of the invention〕

With the above configuration, when the paper feed table is lowered to the initial state, this invention manually feeds a sheet-like object of a different size from the sheet-like object located on the paper feed table. Therefore, it has excellent effects such as being able to feed a sheet-like object of a different size from the sheet-like object positioned on the paper feed tray.

[Brief explanation of drawings]

The drawings show an embodiment of the automatic sheet feeding device according to the present invention, in which FIG. 1 is a plan view, FIG. 2 is a longitudinal sectional front view particularly showing the relationship between the paper feed tray and the lock mechanism, and FIG. FIG. 4 is a longitudinal sectional front view particularly showing the relationship between the paper feed tray and the intermittent rotation mechanism of the double-feed prevention roller; FIG. (al (b
) is a schematic diagram showing the support member and adjustment member, Figure 6 is a schematic diagram showing the relationship with the manual feed unit, Figure 7 is a schematic diagram showing the intermittent rotation mechanism of the double feed prevention roller, and Figure 8 is a side guide. FIG. 3 is a schematic diagram showing the upper end of the plate. 1... Elevating paper feeding table section 2... Machine stand 3 for electrophotographic copying equipment, etc.
- Machine stand 4...Paper feed stand 5...Support members 8a, 8b...Support rollers 9...Lift guide plate 10...・Feeding section 13.15...Roller 16...Paper feed belt 17...Paper feed roller 20...Front end guide plate 21... Double feed prevention rollers 23, 26... Link plate 27... Ratchet 28... Ratchet push-up plate 31a, 31b, 33a 33b 90a, 90b... Guide Board 41
, 42, 44 46.47.48...Sprocket 45.49
...Chain 50 ... Training board 53 ... Pinion 54 ... Rank 55 ... Side guide plate 56 ... Handle 60, 62... Locking piece 61... 10th hook member 63... 20th hook member 70... Main body 72 of side guide plate... ...
・Rotating plate 73...Spring 75...Manual feed unit 77a...Groove 78...Plate for placing sheet-like objects Fig. 7 Fig. 8

Claims (1)

[Claims] An automatic feeding device for sheet-like materials that is attached to the main body of a recording device, etc., which includes a paper feed tray that can move up and down, and a sheet placed on the paper feed tray that is located above the paper feed tray. a feeding section that sequentially feeds the sheet-like objects starting from the highest one; and a manual paper feeding section that manually feeds the sheet-like objects to the feeding section when the sheet feeding tray is in a lowered position. An automatic feeding device for sheet-like materials.