JPS59177234A - Paper feeder for copying machine - Google Patents

Abstract

PURPOSE:To prevent wron setting for business hseets by installing, in the business-sheet accommodating case of a paper feeder having a paper feeding board which can be raised and lowered, a partitioning wall for dividing a longitudinally setting region for longitucinally setting a business sheet having the max. size and a laterally setting region for laterally setting a business sheet having other size and tilting said partitioning wall by the elevation and lowering of the paper feeding board. CONSTITUTION:In the application to a paper feeder 1 in which a busines sheets having B5-A3 size are accommodated, a paper feeding board 7 which has a rectangular form whose one edge is cut and can be raised and lowered is installed into a business-sheet accommodation case 2. Business-sheets are loaded onto the paper feeding board 7. A region where a business sheet-having a size B4 or less are set is a laterally setting region X, and a region where a business sheet having A3 size is set is a longitudinally setting region Y, and the upper part of the paper feeding board 7 is opened in the laterally setting region X. In the longitudianlly setting region Y, the paper feeding board 7 is covered with a shielding apparatus 10. Said shileding apparatus 10 is constituted of an end plate 11, upwardly opened cover member, and a partitioning wall 15 which can be tilted by the elevation and lowering of the paper feeding board and shields the front opened part of the shielding apparatus 10 and is retreatable when a business sheet having A 3 size is used.

Description

[Detailed Description of the Invention] Industrial Field of Application The invention 6) relates to a paper feed device for a copying machine that is equipped with a paper feed tray that can be raised and lowered and is capable of storing #4 paper of different sizes. be.

2. Description of the Related Art In a copying machine paper feeder equipped with a paper feed tray that can be raised and lowered, the paper feed tray is raised and lowered using a mechanism as shown in FIGS. 1 and 2, for example.

That is, the paper feed second pupil 01G is rotatably supported by the outer box 02 and the outer box o2, and the motor MV' is connected to the outer box 02 via the joint 04.
A winding shaft 03 connected to the winding shaft 03 in a contact/separation mode, a paper feed tray 05 with a pair of rollers 06 attached to each end on both sides, one end fixed to the winding shaft 03, and the other end a paper feed tray. A take-up belt 07 fixed to the belt 05, a guide roller 09 that guides the belt 07Y, and a pair of rollers 0 on both sides of the paper feed tray 050.
6 and whose both ends are fixed to the outer box 02 and the paper P placed on the paper feed table 05.
The paper feed roller 010 is configured to be brought into contact with the paper feed roller 010.

When the paper P is sequentially ejected by the paper feed roller 010 in the state shown in FIGS. The winding shaft 03 is unable to rotate, and the paper feed table 05 is raised via the winding belt 07. Note that the paper feed tray 05 always maintains a horizontal attitude due to the action of the horizontal maintenance wire 08171.

Then, when the upper surface of the stacked sheets of paper P is pressed by the paper feed roller 010, the level of the upper surface of the paper P is detected by a sensor such as a limit switch. However, if, for some reason, the above-mentioned 1) 9 switch etc. does not operate effectively, the motor M'f must be stopped by releasing the drive system clutch or by stopping the motor If the machine does not stop, the paper feed tray 05 will run out of control, resulting in damage to the machine.

As a countermeasure against this, an emergency stop switch (sy) is installed at approximately the same level as the paper feed roller 010, in addition to the limit switches and the like.
, 4 (see Fig. 1), so that when the emergency stop switch S is operated, the motor M7 is stopped and stopped.

By the way, suppose that the paper feeder 01 is set horizontally with respect to the paper feed direction A for B5 to B4 sizes, as shown in FIG. When using a copying machine equipped with G, the paper width that can be tilted (width relative to the paper feeding direction) is less than or equal to the long side length of B4 size paper ・Paper feeding device 01'& modified A3 In order to be able to take close-up pictures of size paper, as shown in Figure 4, use B5~
B4 size paper should be set horizontally, and A3 size paper should be set vertically. In particular, if the copying machine is equipped with a paper feed device 01' and multiple stages, if you modify the paper feed device 01σ) of a specific stage and set all B to A3 size paper in portrait orientation, the other Since the setting method is different from the setting method for B5 to B4 size j44M at the paper feed speed of 01Vc, setting errors are likely to occur, so it is preferable to set only A3 size paper in portrait orientation as described above. .

Naturally, when such a setting method is adopted, at least three emergency stop switches S are required as shown in FIG. 4, taking into account various incorrect settings for each size of paper.

In this way, 17' where three emergency stop switches S are arranged.
) results in a slight increase in the number of parts and complication of the mechanism, which increases costs.

Also, the size of the paper set (well, it is detected by the adjustable side guides S, G, and end guides E, ai), but due to incorrect setting, other sizes may be detected in the dedicated area for A3 size paper. When the paper is located, the fundoshi copying machine is operated as if A3 size paper is set,
This results in loss of operating time or waste due to not being able to obtain the desired copy, and in some cases, troubles such as paper jams occur.

Purpose of the Invention The present invention has been devised against the above technical background, and its purpose is to provide a paper feed device for a copying machine equipped with a paper feed tray that can be raised and lowered. Place the size paper vertically,
The purpose is to prevent paper setting errors when paper of other sizes is placed horizontally.

] Aimed at OS area The configuration of the present invention is that in a paper feed device for a copying machine equipped with a paper feed tray that can be raised and lowered, paper of a size other than the largest size paper is placed horizontally in a storage case. A storage area and a vertical image area where the maximum size paper is placed vertically beyond the horizontal area are provided.
The vertical neck area is characterized by being divided by an upper cover that can be opened and closed, and a partition wall that has an inclination mJL with respect to the upper cover.

When setting the maximum size m to the paper feed device with the previous Jr. When the bar is closed, the bulkhead tilts and falls down relative to the upper cover, and is placed on top of the paper by 1°.

When setting paper of sizes other than the largest size paper, the paper is stored in the horizontal area (with the vertical area shielded by the upper cover and the partition wall). At this time, even if the paper comes in contact with the bulkhead and a horizontal force is applied, the bulkhead 6 maintains its vertical posture^, but when the paper feed tray rises, the bulkhead C is pushed by the paper feed tray and moves against the upper cover. tilt.

Example Next, the book @ Ming is shown in Figures 5 to 15.
This will be explained based on the f1j example.

FIG. 5 shows a copying machine paper feeding device (hereinafter simply referred to as paper feeding device) 1 that can store B to A3 size paper.
is shown in a plan view. The paper feeding device 1 has a bottom wall 3 and a side wall 4.
．． 5-, inside the paper storage case 2 formed by the front wall 6,
It is equipped with a paper feed tray 7 which is shaped like a partially cut out rectangle and is movable up and down.
With respect to the paper feed direction A, A size paper is oriented vertically, B
Paper size 4 or smaller can be set horizontally. The sheets of each size are set close to the loose corner 2A formed by the side wall 4 and front wall 6. In addition, in Figure 5, B4 size paper? This shows the set state, and the sides of paper B4, which are gathered to the two corners, are
It is positioned by side guides 8 that are adjustable in the width direction (direction along the front wall 6). Further, reference numeral 9 in the figure indicates a fixed guide which is erected on the bottom wall 3 and has a diagonal cross section.

The area where paper up to B4 size is set is called the horizontal area X, and the area beyond the horizontal area x'4 where A3 size paper is set is called the vertical area Y.
In the horizontal area X, the upper part of the paper feed table 7 is completely open, or in the vertical area Y, the paper feed table 74 is covered by the shielding device 10. This shielding device 10 can be easily understood by referring to FIG. 14 is formed with a tt, b along with 1 hinge 1.1.a and is tilted as a fulcrum.
A pair of engagement protrusions 15 a 'a:: partition walls 15 provided on both sides, respectively.

The cover member 12 is the paper feed tray 1 in the vertical placement area Y.
The partition wall 15 that engages with the upper cup 4a takes a vertical position at the front end of the upper cup <-13, and is attached to the lower side of the partition wall 15 and is supported by the paper feed tray 7VC by a pair of guide rollers 15b'aj. When the paper feed tray 7 rises from this state, the partition wall 15 engages the engagement protrusion 15a'lx and the guide roller).
14 It is pushed up while tilting along &. And hinge 1.1. a'& hippo as a fulcrum night 1
To tilt the upper cover 130, hold the handle 13a attached to the front end of the upper cover 130 and lift it.
5 should also be lifted up as one.

Next, the elevating mechanism of the paper feed table 7 will be explained.

That is, in the side neck area X, a drive shaft 21 driven by a motor M is attached to the side wall 4.
20 is fitted, and furthermore, pulleys 22 are attached on both sides sandwiching the drive wheel 20. A pair of winding wires B each have one end tied to the drive wheel 20,
Wrapped around each pulley 22, the other end of each wire 23 is
It is tied to a pair of support rods 24 protruding from the sides of the paper feed tray 7. This support rod 24 &:t protrudes outward through a pair of vertical lines (4a7) formed on the side wall 4, and the wires 23 are tied to the protruding portions (see above). See Figures 5 to 8. However,
Figure, Figure 8 is V! l −Vll
(It is a line arrow view and a sectional view taken along the line ■1-■).

In addition, in the horizontal placement area , each pair of rollers C are secured to a horizontal maintenance wire 27. This horizontal maintaining wire 27 has one end 27 a as the bottom v
3 and more! ? The #ii section 27b is tied to the upper end of the side wall 5. The paper feed tray 7 is supported by a pair of horizontal maintenance wires 27 and a hoisting wire 23, and the stone mechanism C that moves up and down in a horizontal position is the same as that shown in FIGS. 1 and 2 (FIG. 5). , see Figures 8 and 9.

However, FIG. 9 t'i is a cross-sectional view taken along the line -IX in FIG. 5).

A paper feed roller R is disposed close to the front wall 6 of the paper storage case 2 so as to be in contact with the sheets B and iC on the paper feed table 7, and is lower than the lower end of the circumferential surface of the paper feed roller R. Emergency stop switch S that can detect rising slightly above. are not arranged properly. This emergency stop switch S. is within the lateral neck region
, for size! &, No matter where the paper is placed horizontally, it will be in a position where abnormal rise of the paper can be detected.

To set the paper size, keep the shielding device 1o closed, insert the paper toward the two corners, and align it with the side guides 8. At this time, the vertical area Y is the shielding device 1
0 and the partition wall 15 is engaged with the slit 4a in a vertical position.
Even if the partition wall 15 is pushed horizontally, the partition wall 15 will not tilt. Therefore, if paper B4 is placed vertically by mistake,
Therefore, setting across the vertical area Y can be avoided. The same applies to the settings for A4 size paper, B size paper. Incidentally, when the paper size is detected by the side guide 8, the copying machine starts operating based on the detection signal.

From this setting state, when the motor Mi is driven, the drive wheel rotates and the hoisting wire 23 is connected to the drive wheel 2.
0, and the paper feed table 7 rises.

When the flat surface of the paper B4 on the paper feed tray 7 contacts the paper feed roller R, the upper surface level of the paper B4σ] is detected by a sensor such as a 11-mit switch (not shown).

When the motor M stops or a clutch is inserted in the drive system, the clutch is disengaged, the drive shaft 21 is braked, and the paper feed table 7&i is stopped.

Then, as the post-copying progresses, the paper feed roller R rotates,
The sheets of paper B4 are carried out one by one (see FIG. 10).

When the amount of paper B4 decreases due to unloading, the drive system is operated and the paper feed table 7 is raised. In addition, if the paper feed tray 7 rises and the level is not detected by the sensor for some reason, the paper feed tray 7 may continue to rise, or if it rises slightly, an emergency warning occurs. Stop switch S. Paper B by 1
4 is detected and the motor M stops. Emergency stop switch S. As mentioned above, no matter how you set the B size paper horizontally in the horizontal area X,
It is placed in a position where abnormal rise in paper can be detected.
Abnormal increases can be detected for B5 and A4 size paper in the same way as for B4 size paper.

By the way, when the paper feed tray 7 rises, the partition wall 15
It is pushed up by Tlc, guided to the guide slit 14a of the side plate 14, and tilted with respect to the upper cover 13 and the paper feed tray 7. The movement of the partition wall 15 during this time is shown in FIGS. 11 and 12, and when the paper feed tray 7 reaches its upper limit, the II wall t5 assumes a substantially horizontal position 7, as shown in FIG. 13.

Next, V on the paper feed tray 7? :, The case of setting A3 size paper will be explained.

As shown in FIG. 14, the handle 13 a of the upper cover 13
K, open the shielding device 10, and set the paper A37 on the paper feed tray 7 across the horizontal area X1 and the vertical area Y. Then, when the shielding device 10 is closed, the partition wall 15 is supported by the paper A3 in an inclined position.

Thereafter, when the paper feed table 7 rises and the upper surface of the paper A3 comes into contact with the paper feed roller R, the partition wall 15 assumes a substantially horizontal position (see FIG. 16). Note that an opening 13A is formed in the upper cover 13, and an A3 sensor SA3 is disposed in the opening 13A, and the A3 sensor SA3 detects that A3 size paper is set. The copying machine is operated based on the detection signal.

When the paper feed table 7 on which the paper A3 is set rises abnormally in this manner, an emergency stop switch S is activated. operates and motor M stops.

The shielding device 10f shown in FIGS. 5 to 16] and others,
It is also possible to employ the shielding device 30 shown in FIGS. 7 to 191.

Shielding device 30 G, like the shielding device 10, is a stone placed inside the paper storage case 2. With the same device 30, [well, the bottom plate 31,
End plate 32, pair of side brakes) 33 integrally shaped 51. The upper cover 34 is supported by a pair of hinges 35 at the upper end of the end plate 32, and a partition wall 36 is supported at the front end of the upper cover 340 so as to be tiltable.

The upper side of the side plate 33 is formed as a guide side 33a that guides the projections 36a protruding from both sides of the partition wall 36, and the guide side 33a has a slot 33b. is provided, and the same slit 33 b
The front end of the stone is formed as a vertically oriented depression. Therefore, in the state shown in Figure 'P-17, the paper feed tray 7
When setting the paper on top, a horizontal force of 7 is applied to the partition wall 36.
Even if you get 10, the protrusion 3G & gas IJtsu) 33 b
Since the partition wall 366 is engaged with the depressed portion of the front end thereof, the partition wall 366 does not tilt and maintains its vertical posture. Furthermore, when the paper feed table 7 rises from this state, the gap @36 is pushed up via the guide roller 361)' attached to its lower side. This movement is ensured by a slit formed in the supporting portion G6A of the partition wall 36, which is attached to the upper cover 34 and connected to the side 33a.
move to the side. That is, the partition wall 36 is guided by the guide side 33a and tilts with the pin 34a as a fulcrum (the first
(See Figure 8).

Also, when setting A3 size paper, use handle 3.
4. Grasp the upper cover 34, lift the upper cover 34, and use the hinge 35 as a fulcrum to tilt and release (see Fig. 19). At this time, the pair of stopper arms 37 attached to both sides of the upper cover 34σ) engage with the slit 37a and the pin 33c protruding from the side plate 33).
It is guided by pin 33c at the bottom and is displaced, but the final VC is
It is stopped by a stopper 33d protruding from the side plate 33. That is, the upper cover 34 is interposed between the stopper arm 37 and the pin 33c.
33d and held in an open position.

In this state, A3 size paper is set on the paper feed table 7. After this, when the upper cover 34 is closed, the partition wall 36
Because it is supported on the paper, it assumes a prone position.

Effect of Al Generation As is clear from the above explanation, in the present invention, in a copying machine paper feeder equipped with a paper feed table that can be raised and lowered, paper of sizes other than the largest size paper can be stored in the paper storage case. There is a horizontal area for horizontal placement, and a vertical area for vertical placement of the maximum size paper beyond the horizontal area. It is separated by an upper cover that can be opened and closed and a bulkhead that can be tilted relative to the upper cover, so when setting paper of sizes other than the largest size on the paper feed tray, the vertical placement area can be separated from the upper cover. By shielding the paper with a partition wall, it is possible to avoid accidentally setting paper of other sizes in the vertical placement area. Therefore, it is only necessary to place the minimum number of emergency stop switches in the horizontal installation area, which reduces the number of parts, simplifies the device structure, and reduces costs.

Further, it is possible to save the effort of adjusting the shielding area of the a-pupil area with the upper cover and the partition wall.

Furthermore, when a paper feeding device with a paper feeding tray that can be raised and lowered is arranged in multiple stages, the configuration of the present invention is adopted for the paper feeding device of a specific stage, and the paper is placed horizontally in the device. By adopting this structure, the usability of all paper feeding devices except for the largest size paper is unified, and it is effective in preventing incorrect setting of paper. Furthermore, if all paper feeders are used to store the same size paper, the amount of paper that can be stored will be greatly increased.
It is possible to perform Enoki mushrooms with high efficiency.

[Brief explanation of the drawing]

FIG. 1 shows a known copying machine paper feeder f) longitudinal sectional side view;
Fig. 2 is a view taken along the line ■-■ in Fig. 1, Fig. 3 is an example of a copying machine paper feeder for setting paper horizontally with respect to the paper feeding direction, and Fig. 4 is a maximum size up to C. Orient the paper vertically,
An example of a paper feeder for a copying machine in which 6 sheets of paper of other sizes are set horizontally, FIG. 5 is a plan view of a paper feeder for a copying machine according to an embodiment of the present invention σ), and FIG. 6 is a perspective view of the main parts thereof. Figure, 7th
The figure is a cross-sectional view taken along the line ■1-■1 in FIG. 5, and FIG. 9 is a cross-sectional view taken along the line ■-■ in FIG. 5. A cross-sectional view, T10, is a vertical side view of the paper feeding device in the same embodiment showing a state in which the paper feeding platform is raised, and FIGS. 11 to 13 show displacement of the partition wall as the paper feeding platform rises. 14 is a conceptual diagram, and FIG. 15 is a longitudinal side view showing the state when maximum size paper is set in the paper feeding device.
Figure C is a longitudinal side view showing the state after the setting is completed.
Fig. 16 is a vertical sectional side view showing the paper feed tray in the raised state;
The figure is a perspective view of a main part of a paper feed device for a copying machine according to another embodiment,
FIGS. 18 and 19 are side views of the main parts showing how they are used. 1... Paper feed device for copying machine, 2... Paper storage case,
2A...Corner corner, 3...Bottom wall, 4...Side wall, 4a
...Slit\5...Side wall, 6...Front wall, 7.
...Paper feed tray, 8...Side guide, 9...Fixed guide, 10...Shielding device, 11...Eto, 14a...
- Guide slit, 15...p9.15a...engaging protrusion, ]5b... guide roller, 20... drive wheel, 21... drive shaft, 22... pulley, 23... Winding wire, separate...support rod, 2=5
...Guide roller, 26...Guide roller, 27.
・・Horizontal maintenance wire, 30...a vIs position, 3
]... Bottom plate, 32... End plate, 33...
Side plate, 33a...Guide side, 33b...
Slit, 33c...pin, 33d...stopper, 34...upper cover, 34a...bottle, 34A...
... Handle, 35 ... Hinge, 36 ... Bulkhead, 36A
...Support part, 36a...Protrusion, 36b...Guide roller, 37...Stopper arm, 37a...Slit, M...Motor, R...Paper feed roller So...Emergency Stop switch, S^3...Sensor for A3. 19- Tori 1 picture house 2 prisoner day e) Kakuda Kudenki picture 7

Claims (1)

[Claims] For copying machines of the type in which paper is set near the corner of the paper feed side of a paper storage station equipped with a paper feed table that can be raised and lowered, and the paper feed table is raised to feed the paper by a conveying means. In a paper feeding device that can store paper of different sizes, the paper storage cup has a horizontal area for horizontally placing paper of other sizes except for the maximum size paper 2, and a maximum size paper beyond the horizontal area. A vertical placement area is provided in which the size paper is placed vertically, and the vertical placement area is
It is covered with an upper cover that can be opened and closed, and a partition wall is provided to partition the vertical area and the horizontal area, and the partition wall can be tilted with respect to the upper cover, but can also be covered with a horizontal force 7 in a vertical position. A paper feed device for a copying machine, characterized in that it does not tilt, but can be tilted by raising and lowering the paper feed table.