JPH0211386Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a paper feeding device for a copying machine or the like.

[Conventional technology]

When a conventional paper feeding device of this kind with a paper feed separation claw is applied to a copying machine, the paper feed separation claw must be lifted or removed and set when copy paper is running out or is running out and the paper needs to be replenished. As a result, jams may occur due to setting failures or forgetting to set the settings. As a measure to prevent this, the applicant has developed a mechanism in which, by operating a lever, a claw support member provided on a circulating wire moves up and down, lifting and lowering the paper feed separation claw (Japanese Patent Application No. 1983-
(See No. 88363).

[The problem that the idea attempts to solve]

However, in the above-described mechanism, fixing and releasing the paper loading table and attaching and detaching the paper feed roller are separate operations, so it is still insufficient to eliminate the complexity in the operation of the entire paper feed device.

In view of the above points, the present invention makes it possible to replenish paper by separating the paper feed separation claw from the paper surface or the paper placement table with a simple operation, eliminates the cause of jams, and utilizes this paper feed separation claw operation mechanism. The purpose of this invention is to provide a paper feed device for a copying machine, etc., which allows the fixing and release of a paper loading table and the attachment and detachment of a paper feed roller at the same time, and which makes it possible to easily operate the entire paper feed device. be.

[Means to solve the problem]

According to the present invention, the above problem can be solved by holding the paper feed separation claw in an inoperative position by rotating a lever rotatably attached to the paper loading table in one direction, and by rotating the lever in the other direction. a paper feed separation claw operating mechanism that places the paper feed separation claw in an operating position; a paper placement table engagement/disengagement mechanism that switches the paper placement table between a fixed position and a release position with respect to the machine base; The paper feed roller position switching mechanism that switches the paper feed roller between an operating position and a non-operating position, and a paper feed roller fixing mechanism that holds the paper feed roller in the non-operating position, and the paper feed separation claw operating mechanism A wire whose end portion is fixed to the lever, a paper feed separation claw movably attached to the wire, and a claw lifting member fixed to the wire and lifting the paper feed separation claw by movement of the wire. The paper loading table engaging/disengaging mechanism is comprised of a moving shaft movably attached to the paper loading table and a fitting hole provided on the machine base side into which the moving shaft fits, and The paper roller fixing mechanism includes a grooved disk connected to one end of a roller arm that supports the paper feed roller, and a locking claw attached to the machine base that locks in the groove of the grooved disk. , the lever further includes a mechanism for rotating the grooved disk to move the paper feed roller to the non-operating position when the paper feed separation claw is held in the non-operating position, and also locking the grooved disk to the non-operating position. an operating member of a paper feed roller position switching mechanism that locks the claw; and when the paper feed separation claw is held in the operating position, the moving shaft is moved to fit into the fitting hole and the paper feed separation claw is moved. This problem is solved by a paper feeding device of a copying machine that is equipped with an actuating member of a paper mounting table engagement/disengagement mechanism that moves the moving shaft in the opposite direction to detach from the fitting hole when held in the non-operating position. become something that

[Effect]

According to the present invention, when replenishing paper, by rotating the lever, the claw lifting member fixed to the wire rises, placing the paper feed separation claw on the table and lifting it up. In this state, paper is newly replenished onto the table. Meanwhile, at the same time as the paper feed separation claw rises, the moving shaft is also pulled out from the fitting hole, the paper loading table is released from the machine base, the grooved disk and roller arm are rotated, and the paper feeding roller is moved to the paper loading table. Lifted away from above and fixed in this position,
The paper loading table can be pulled out and paper can be replenished.

After paper supply is completed, push the paper loading table into the machine base and rotate the lever in the opposite direction to the above, the paper feed roller will be released from the fixed position and fall onto the paper, and the paper feed separation claw will be released. become free,
Paper can now be fed out.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

1 to 3, reference numeral 1 denotes a paper loading table, on which a pair of left and right side plates 2, 2' are erected.
It is placed on the table 1 using 2' as a guide. 4,
4' is a pair of paper feed rollers that receive rotation transmission from a drive source (not shown) through an appropriate transmission mechanism, and contact the paper 3. As the paper feed rollers 4 and 4' rotate in the direction of arrow A, the paper 3 is It is sent out in the direction of arrow B. A pair of paper feed separation claws 5 and 5' are provided to prevent the paper sheets 3 from being fed in an overlapping manner at this time. These paper feed separation claws 5, 5' are vertically elongated holes 2a, 2 provided in the left and right side plates 2, 2'.
They are attached so that they can be moved up and down using a' as guides, and fall onto the paper 3 due to their own weight, and when the last paper of the stacked papers 3 is fed out, they remain on the paper loading table 1. That will happen.

A rotating shaft 6 is attached to one side of the paper table 1, a handle 7 is fixed to the protruding end of the rotating shaft 6 on the side of the table 1, and a lever 8 is attached to the inner side of the side plate 2 of the rotating shaft 6. Fixed. Note that the rotation axis 6
is supported to rotate by a regulated angle. A pin 9 is attached to the tip of the lever 8,
One end of a wire 10 is fixed to this pin 9, and this wire 10 is connected to several rollers 1 provided on the side plate 2.
1, 12, 13, and 14, passes through the rollers 12 again, and the other end returns to the pin 9 via a spring 15 and is fixed.

Furthermore, the wire 10 is provided at a point between the upper roller 13 and the lower roller 14 as shown in FIGS.
As shown in the figure, a claw lifting member 16 is attached and fixed, and the paper feed separation claw 5 is positioned above the claw lifting member 16, and the wire 10 is connected to the paper feed separation claw 5.
It passes through the slit provided in the. The other separation claw 5' side has exactly the same structure, and the lever 8, pin 9, and wire 1 on the separation claw 5 side are
0, rollers 11, 12, 13, 14, spring 1
5. Lever, pin, wire, roller, and spring are provided respectively corresponding to the claw lifting member 16. The rotating shaft 6 has a second lever 8' at the end opposite to the first lever 8, and this lever 8' serves as one end of the operating mechanism for the paper feed separation claw 5'. It is similar to the lever 8 of.

Referring to FIGS. 4 to 7, the second lever 8' is provided with bent portions 8'a and 8'b, and the pin 17 is located between the bent portions 8'a and 8'b. The moving shaft 18 driven in this manner passes through the fixed bearing 19, and the movement of the pin 17 is restricted by the elongated hole 19a (FIG. 1). Further, the rear wall 20 is provided with a hole 20a into which the moving shaft 18 can be fitted while the paper placing table 1 is pushed in. Therefore, by rotating the handle 7 counterclockwise, the claw lifting member 16 is lowered as shown in FIG. 2, and the paper feed separation claws 5, 5' are freed, and at the same time, the lever is raised as shown in FIG. The bent portion 8'b of 8' pushes the pin 17 to the left, the moving shaft 18 fits into the hole 20a, and the paper loading table 1 is fixed to the machine base (apparatus main body). Also, to release the paper loading table 1 from the machine base (apparatus main body), rotate the handle 7 clockwise in the opposite direction to the above, and the paper feed separation claws 5 and 5' will rise as shown in FIG. At the same time, the bent portion 8'a acts on the pin 17, as shown in FIG.
a, and the paper loading table 1 can be pulled out of the machine. (FIG. 1 shows this state.) The paper loading table 1 can be easily pulled out of the machine by grasping the handle 7 and pulling it toward you.

The paper feed rollers 4, 4' are rotated by a shaft 21 which receives rotation from a drive source (not shown) via a chain (also not shown). The shaft 21 is supported by a pair of frames 22 via bearings 23 and 23', and forms the center of rotation of the paper feed roller arm 24. The shaft 25 is the paper feed roller arm 24
A disc 27 is supported by a pair of frames 22 via bearings 26 (one bearing 26 is not shown) so as not to hinder the rotation of the disc 27, and has a V-groove 27a at one end.
is fixed, and a pin 28 is screwed into this disc 27. Further, a presser plate 29 is fixed to the shaft 25 so as to straddle the paper feed roller arm 24 . The claw 30 is pressed by a spring 31 and is arranged to fit into the V-groove 27a of the disc 27. A pin 32 is driven into the second lever 8', and clockwise rotation of the handle 7 can be transmitted to the pin 28 at the position where the fixed shaft 18 fits into the hole 20a (FIG. 4).

In the paper feed state shown in FIG. 4, the paper feed separation claws 5, 5' and the paper feed rollers 4, 4' are on the paper 3, the fixed shaft 18 is fitted into the hole 20a, and the paper loading table 1 is fixed inside the machine. At this time, the pin 32 on the second lever 8' is outside the movable range of the pin 28, and as the paper 3 decreases, the paper feed rollers 4, 4' and the paper feed roller arm 24, which rotate around the shaft 21, Maintains the paper feeding position using its own weight. Further, the paper feed separation claws 5, 5' rest on the paper 3 by their own weight, and separate the paper sheets fed out by the paper feed rollers 4, 4' one by one. At this time, the claw lifting member 16 is at the lowest position, and the paper feed separation claws 5, 5' are kept free until the paper 3 runs out and the paper feed separation claws 5, 5' ride on the paper placement table 1. I'll keep it.

FIG. 3 shows the paper replenishment state. When the paper 3 on the paper loading table 1 runs out, the handle 7 in FIG. 1 is rotated clockwise and the lever 8 is rotated accordingly.
8' is also rotated by the same angle and takes the position shown in FIG.
By rotating the levers 8 and 8', the claw lifting member 16 fixed to the wire 10 is raised and the table 1 is lifted up.
Place the upper paper feed separation claws 5, 5' on top of it and pull it up. In this state, paper 3 is newly replenished onto the table 1.

On the other hand, at the same time that the paper feed separation claws 5, 5' are raised, the moving shaft 18 is also moved to the hole 2 by the rotation of the second lever 8'.
The paper table 1 pulled out from 0a is released from the machine, but by operating this handle 7, the pin 3
2 is in contact with the pin 28, and the disc 27 and the accompanying shaft 2
5 is rotated counterclockwise. Therefore, the paper feeding roller arm 24 is lifted off the paper loading table 1 by the presser plate 29 attached to the shaft 25 across it. The paper feed rollers 4, 4', which have been lifted to a position where there is no problem in pulling out the paper loading table 1, are fixed in position by the claws 30 fitting into the V grooves 27a, and the paper loading table 1 is pulled out. Paper can be replenished (Fig. 1, Fig. 6).

The state in which the paper loading table 1 is pushed into the machine after paper supply is completed is also the same arrangement as in FIG. 6, although the paper is not drawn. and paper feed separation claw 5,
The operation of freeing the handle 5' and fitting the moving shaft 18 into the hole 20a is also performed by rotating the handle 7 counterclockwise as described above. At this time, the pin 32 on the second lever 8 contacts the pawl 30, the disc 27 is released from the pawl 30, and the paper feed rollers 4, 4' and paper feed roller arm 24 fall onto the paper 3 due to their own weight. The state returns to a state where paper can be fed.

[Effect of idea]

Since the present invention has the above-described structure and operation, it is possible to separate the paper feed separation claw from the paper surface or the paper placement table by operating the handle, thereby making it possible to replenish paper and to eliminate the cause of jams. By operating the above-mentioned handle, the paper loading table is fixed to and released from the main body of the apparatus, that is, the machine base, the paper feed roller is switched to the operating and non-operating position, and the paper feed roller is fixed at the non-operating position at the same time. Therefore, switching between paper feeding state and paper replenishment state can be performed extremely easily with a single operation.
In addition, the paper loading table can be easily inserted into and removed from the machine base by grasping the handle, which has the effect of improving operability as a paper feeding device for a copying machine or the like.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the present invention, FIGS. 2 and 3 are schematic diagrams of the up and down mechanism of the paper feed separation claw in the same embodiment, and FIG. The figure shows the same as above when paper is being supplied, FIG. 4 is a side sectional view of FIG. 1 and shows the paper being fed, FIG. 5 is a partial front view thereof, and FIG. 6 is a side sectional view of FIG. FIG. 7 shows a state in which paper is being replenished, and FIG. 7 is a partial front view thereof. 1...Paper placement table, 4, 4'...Paper feed roller, 5, 5'...Paper feed separation claw, 7...Handle, 8...
...First lever, 8'...Second lever, 9...Pin,
10... Wire, 11, 12, 13, 14... Roller, 16... Claw lifting member, 17... Pin, 1
8...Moving axis, 20a...Fitting hole, 24...Paper feed roller arm, 25...Shaft, 27...Disc, 27
a...V groove, 28...pin, 29...pressing plate, 3
0...nail, 32...pin.

Claims (1)

[Scope of utility model registration request] By rotating a lever rotatably attached to the paper loading table in one direction, the paper feed separation claw is held in the non-operating position, and by rotating the lever in the other direction, the paper feed separation claw is placed in the operating position. a paper feed separation claw operating mechanism, a paper loading/unloading mechanism that switches the paper loading table between a fixed position and a released position relative to the machine base, and a paper feeding roller between an operating position and a non-operating position. and a paper feed roller fixing mechanism that holds the paper feed roller in the non-operating position. and a paper feed separation claw that is movably inserted over the wire, and a claw lifting member that is fixed to the wire and lifts the paper feed separation claw by movement of the wire, and the paper loading table engagement/disengagement mechanism is composed of a moving shaft movably attached to the paper loading table and a fitting hole provided on the machine base side into which the moving shaft fits, and the paper feeding roller fixing mechanism fixes the paper feeding roller. It is composed of a grooved disk connected to one end of the supported roller arm and a locking pawl attached to the machine base side that locks into the groove of the grooved disk, and the lever further includes the paper feed separation plate. A paper feed roller position switching mechanism that rotates the grooved disk to move the paper feed roller to the non-operation position when the claw is held in the non-operating position, and also locks the locking claw to the grooved disk. an actuating member that moves the moving shaft to fit into the fitting hole when the paper feed separation claw is held in the operating position, and moves the moving shaft when the paper feed separation claw is held in the non-operation position. A paper feed device for a copying machine or the like, which is equipped with an operating member for a paper table table engagement/disengagement mechanism that is moved in the opposite direction to be detached from the fitting hole.