JPH0229055Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a paper feeding device attached to a copying machine and used to supply a large number of recording sheets stacked and stored one by one to the copying machine according to the copying process. Regarding the structure of the recording paper width regulating section.

[Prior Art] In general, a paper feed device for a copying machine is such that a cassette loaded with recording paper is installed in the cassette loading slot of the copying machine, and the entrance roller of the copying machine is engaged with the topmost recording paper loaded and stored in the cassette. In addition, a device is used that feeds recording paper into a copying machine in synchronization with the copying process.

Such recording paper cassettes are usually small and can only hold a limited amount of recording paper, so they have the disadvantage of having to be replenished with frequently used recording paper.
Recently, a paper stacker with a large capacity of up to 1,000 sheets has been attached to this cassette loading slot, and a paper feed roller installed on the paper stacker side constantly feeds recording paper into the cassette loading slot, allowing recording paper to be stored for long periods of time. Paper feeding devices that do not require replenishment have been proposed.

Fig. 1 shows a side cross section of such a paper feeding device.The paper feeding device A is installed in the cassette loading slot B1 of the copying machine main body B as necessary, and is inserted into the copying machine main body in synchronization with the copying process. This is a multi-sheet feeding device configured to feed recording sheets into a paper sheet.

To explain the outline of the structure, the recording paper storage section A1 in the paper feeder A has a pair of guide grooves 1 provided on the left and right side frames (not shown).
A paper feed tray 2 is provided which can be raised and lowered using guides a and 1b, and gears G1 and G1 are driven by a drive shaft M to fixing members 2a and 2b attached to both ends of the paper feed tray 2.
Both ends of two wires W ₁ and W ₂ are fixedly wound around pulleys 3 and 4 which are rotated in opposite directions via G2, and are guided by pulleys 3a, 3b and 4a, 4b. ing.

That is, when the drive shaft M starts rotating counterclockwise from the illustrated state, the wire W ₁ is moved clockwise by the pulley 3, and the wire W ₂ is moved clockwise by the pulley 4 at a constant speed. Therefore, both the fixed part 2a of the wire _W1 and the fixed part 2b of the wire _W2 are pulled toward the pulleys 3a and 4a, and the paper feed table 2 rises in parallel, so that the upper height of the recording paper P reaches a predetermined height. Once the position is reached, e.g. a micro switch (not shown)
The actuator 5 acts to stop the drive shaft M and keep the paper feed tray 2 in that position. The above-mentioned elevating device using the wires W ₁ and W ₂ is provided on both sides of the paper feed tray 2, so that the recording paper p on the paper feed tray 2 is always raised and lowered in a balanced state. It's summery.

Also, the recording paper p loaded on the paper feed table 2
The center of the paper width is always kept at a constant position by a recording paper width regulating member 6 that can move symmetrically in pairs on the left and right to change the interval depending on the size of the recording paper width. Therefore, the leading edge of the recording paper p is in contact with the front abutting plate 8. Further, the feeding roller 9 that is in pressure contact with the uppermost recording paper p is configured to rotate clockwise, so that the recording paper p is carried out to the left.

On the other hand, a recording paper ejecting section A2 is constructed integrally with the recording paper storage section A1 and is installed in the copying machine main body B.
A recording paper ejection path is formed by ejection guide plates 10a and 10b, and the recording paper storage section A1
Even if a plurality of sheets of recording paper P are carried out in duplicate, only the topmost recording paper continues to be carried out by the feeding roller 11, which forcibly rotates clockwise while being in pressure contact with the fixing member 12 for preventing double feeding. It is now being carried out.

Furthermore, a movable guide piece 13 is provided at the end of the recording paper delivery section A2, and is pressed against the entrance roller B2 of the copying machine main body B by the action of a solenoid (not shown). The friction surface on the surface of the guide piece 13 and the entrance roller B rotating in pressure contact therewith.
2, the recording paper p is reliably fed to the copying process.

In addition, in order to move the recording paper width regulating member 6 and the rear abutment plate 7 when recording paper of different sizes is used, or to replenish the recording paper p, a support shaft is provided in the recording paper storage section A1. A lid 14 that can be opened upward using the fulcrum 14a, and a support shaft 15
A lid 15 is provided that can be opened horizontally to the right in the figure using a and 15b as fulcrums.

A paper feeding device with this structure can automatically and continuously feed up to 1,000 sheets of recording paper to the copying machine by connecting it to the copying machine, and is useful when making large quantities of copies. It can be said to be an extremely useful paper feeding device, which is extremely efficient and can also realize automatic copying over a long period of time when used in conjunction with an automatic document feeder.

That is, in such a paper feeding device, the recording paper to be stored is installed so that the center of the paper width always coincides with the center of the feeding roller 9, regardless of its size. The conveying force of the conveyor belt 9 is received in a well-balanced manner so that a smooth conveying action can be performed.

However, in order to keep the center of the recording paper width at a constant position, a device that can move the aforementioned pair of left and right recording paper width regulating members 6 to a position corresponding to the size of the recording paper to be stored in advance and fix it at that position is required. be done.

Since such a device is operated every time the size of the recording paper to be stored changes, the recording paper width regulating member is easily movable, and the number of recording papers to be stored may reach up to 1000 sheets. It must be firmly fixed, and it is quite difficult to realize such a device within a limited space.

[Purpose of the invention] The present invention provides a simple and inexpensive structure for the recording paper width regulating section of a paper feeding device, which allows for easy positioning operation for storing recording paper and is firmly attached at that position. intended to provide.

[Structure of the invention] The present invention provides a structure of a recording paper width regulating section of a paper feeding device equipped with a paper feeding tray that can move up and down on which a large number of recording papers are placed, in which the paper feeding tray is symmetrical in the width direction. A notch is formed at the position, and a pair of recording paper width regulating members are erected in the notches, and the recording paper width regulating members are suspended horizontally between the side plates of the paper feeding device above and below the paper feed tray to guide the recording paper width regulating members. upper and lower guide plates are provided, and each of the upper and lower guide plates is provided with a plurality of recesses in the recording paper width direction that engage with and disengage from the upper and lower edges of the recording paper width regulating member, corresponding to the width size of the recording paper. In addition, the upper guide plate has a fixing means for fixing the recording paper width regulating member, and the lower edge of the recording paper width regulating member is provided with a fixing means that engages the upper edge of the member with the recess of the upper guide plate. This is achieved by the structure of the recording paper width regulating section of the paper feeding device, which is characterized by providing a recessed portion that is larger than its depth.

[Example] An example according to the present invention is shown in FIGS. 2 and 3.

Figure 2 shows the main parts of the function of the recording paper width regulating section (hereinafter simply referred to as width regulating member) in the paper feeding device. , an upper guide plate (hereinafter simply referred to as the upper guide plate) 30 of the recording paper width regulating section, and a lower guide plate (hereinafter simply referred to as the lower guide plate) 31a of the recording paper width regulating section on the bottom board (not shown). and 31b are fixedly installed in pairs on the front, rear, left and right sides, respectively.

The bent portion of the upper guide plate 30 is provided with recesses 30a, 30a, 30a, 30a, 30a, 30a, 30a, 30a, 30a, 30a, 30a, 30a, etc.
A plurality of recesses 30b are arranged, and these recesses 30a, 30
Concave portions 32a, 32 are also formed at the bent portions of the lower guide plates 31a, 31b at each position of the paper width corresponding to b.
A plurality of b are arranged.

On the other hand, a pair of left and right width regulating members 6 having a shape as shown in FIG. 3 shown in the direction of the arrow in FIG. The protrusions 6a, 6b engaged with the recesses 30a, 30b and provided on the lower edge of the lower guide plate 3
The bent portions 6e, which are engaged in the recesses 32a and 32b of the upper guide plates 1a and 31b, respectively, and which protrude from the upper edge are fixed to the upper guide plate 30 by being tightened with screws 33. There is.

In addition, each of the recesses 30a, 30b and 32a, 3
2b are provided at intervals corresponding to the size of the recording paper, and constitute a so-called recording paper width positioning means that holds the width regulating member 6 in parallel and perpendicular positions in left-right symmetrical positions.

Further, the lower edge of the width regulating member 6 has the protrusion 6
a and 6b and notches 6c and 6d adjacent thereto, and the distance B between the abutting surfaces of the notches 6c and 6d and the tops of the bent portions of the lower guide plates 31a and 31b is equal to the width. The distance A between the upper edge of the regulating member 6 and the top of the bent portion of the upper guide plate 30 is set to be slightly larger.

Therefore, when the width regulating member 6 is separated from the upper guide plate 30 by removing the screw 33 and is slid slightly to the left, the protrusion 6a is removed from the recess 32a of the lower guide plate 31a. At the same time, the protrusion 6b is also connected to the recess 32 of the lower guide plate 31b.
b, and the notch 6d can occupy a position facing the recess 32b.

Note that even if the width regulating member 6 is slid in the right direction, the protrusion 6b does not fit into the recess 32 of the lower guide plate 31b.
When the notch 6c is removed from the recess 32a, the notch 6c can occupy a position facing the recess 32a.

Even if the width regulating member 6 is lowered from this state and the upper edge of the width regulating member 6 is disengaged from the recesses 30a, 30b of the upper guide plate 30, the distance B>
Due to the distance A, neither of the cutouts 6c and 6d engages with the lower guide plates 31a and 31b, so the width regulating member 6 is arranged along the upper and lower guide plates 30, 31a, and 31b. The width regulating member 6 can be moved toward the center of the paper, and the width regulating member 6 can be fixed again in a recess corresponding to the size of the recording paper to be stored. As is clear from the above explanation, the paper feed device having the recording paper width regulating member of the present invention has the advantage that only a few parts are required to be attached and removed to change the size of the recording paper to be stored, and almost no space is required for this purpose. can be,
As mentioned above, in addition to the performance aspect, this also has the effect of simplifying and compacting the paper feeding device.

[Effects of the invention] Since the present invention positions the recording paper width regulating member using the upper and lower guide plates, the regulating position does not shift even if the device is used for a long time, and even when the recording paper size is changed. This can be done with an extremely simple operation by just slightly shifting the engagement relationship between the guide plate and the recording paper width regulating member, and the structure is simple and compact. It is possible to provide a structure of

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the paper feeding device. FIG. 2 is a perspective view of the main parts of the paper feeding device according to the present invention. FIG. 3 is a sectional view indicated by the arrow at the setting position of the recording paper width regulating member. 2...Paper feed tray, 2c...Cut out portion, 6...Recording paper width regulating member, 6a, 6b...Protrusion, 6c, 6d...
...notch, 6e...bending part, 30...upper guide plate,
31a, 31b...lower guide plate, 30a, 30
b, 32a, 32b... recess, 33... screw.

Claims (1)

[Scope of Claim for Utility Model Registration] In the structure of a recording paper width regulating section of a paper feeding device that is equipped with a paper feeding tray that can be moved up and down on which a large number of recording papers are placed, symmetrical positions in the width direction of the paper feeding tray. A notch is formed in the notch, and a pair of recording paper width regulating members are erected in the notch, and the recording paper width regulating members are horizontally suspended between the side plates of the paper feeding device above and below the paper feed table to guide the recording paper width regulating members. Upper and lower guide plates are provided, and each of the upper and lower guide plates is provided with a plurality of recesses in the recording paper width direction that engage with and disengage from the upper and lower edges of the recording paper width regulating member, corresponding to the width size of the recording paper. The upper guide plate has a fixing means for fixing the recording paper width regulating member, and the lower edge of the recording paper width regulating member has a depth of engagement with the recess of the upper guide plate of the upper edge of the member. A structure of a recording paper width regulating part of a paper feeding device, characterized in that a recessed part larger than that of a paper feeder is provided.