JPH0333711Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper feeding device that supplies paper to a paper feeding port of a paper processing device such as a copying machine, a printing machine, a printer, or a facsimile machine.

[Prior Art] Generally, a paper processing device for image formation such as a copying machine or a laser printer has a cassette corresponding to the size of the paper to be used installed in its paper feed port, and feeds the paper one sheet at a time according to the image forming process. Although it is fed by feeding it out, it has the disadvantage that the amount of paper that can be stored at one time is limited.

Therefore, instead of a cassette, a paper feed device that stores a large amount of paper is connected to this paper feed slot, and one or more sheets of paper are supplied from the paper storage section toward the paper feed slot. has been done.

This paper feeding device consists of a large-capacity paper storage frame that stores paper, a vertically movable paper tray that moves up and down as the paper gradually decreases, and a paper tray that touches the topmost paper on the paper tray and directs it toward the processing device. The paper feeder is composed of a paper feeder that sequentially feeds the paper, and a guide means inserted and connected to the paper feeder that guides the paper from the paper feeder to a paper feeder roller provided at the paper feeder of the normal processing device. There is. In such paper feeding devices, when inserting and connecting the guide means of the paper feeding device to the paper feeding port on the processing device side, the positions of the two do not always match, and an adjuster screw is provided on the installation surface of the paper feeding device to increase the height. As shown in FIG. 4, the guide means is swingable up and down in accordance with the paper feed port of the processing device.

[Problems with the Prior Art] The present invention relates to a structure for making the latter guide means swingable in the vertical direction. A roller is provided, and the leading end of the roller swings around this roller, making it difficult to control the drive of the conveying roller. Incorporating it into the system has the disadvantage that the device becomes complicated and large.

Therefore, the present invention allows the paper fed by the paper feeding means to reach a predetermined position in the paper feeding port without placing a conveying roller in the guide means that guides the paper fed by the paper feeding means to the paper feeding port of the processing device. The background of this idea is to make the guide means for adjusting the height adjustable according to the height position.

[Purpose of the invention] When the paper feeder is attached to the paper feeder of a processing device, the paper feeder of the processing device and the guide means of the paper feeder that guides the paper into the paper feeder are connected to the paper feeder. Even if misalignment occurs due to installation conditions or other factors, it can be docked reliably and easily, making installation and removal operations easy. The object of the present invention is to provide a paper feeding device that can reach a predetermined position.

[Solution] The present invention reliably and easily corrects the misalignment of the installation position between the processing device and the paper guide means of the paper feed device attached to the paper feed port by making the paper guide means swingable up and down. In addition, due to the vertical swing of the guide means, the direction of conveyance of the paper differs, and the delivered paper buckles or bends, making it impossible to feed the paper under fixed conditions. The first guide means on the proximal end side is fixed, and the guide means on the outlet side forms a vertically stepped gap below the first guide means, and the distal end thereof forms a vertically stepped gap. The tip of the second guide means is configured to swing, and the tip of the second guide device takes a position that follows the paper feed port of the processing device, and the paper fed by the paper feed device is moved between the tips of the first guide device and the second guide device. This reduces the influence of the swinging of the supported second guide means.

[Example] The present invention will be explained below according to the illustrated embodiments.

The processing device indicated by the overall symbol A is an example of a normal copying machine, and 1 is its paper feed port, and 2 is a paper feed roller, which is installed at the paper feed port 1 and rotates to take in paper according to the copying process. It's getting old. When a cassette containing paper is loaded into the paper feed port 1, the paper feed roller 2 engages with the topmost paper and feeds the paper into the apparatus one by one in accordance with the copying process.

The paper feed device indicated by the overall symbol B is attached to the paper feed slot 1 instead of the normal cassette, and is attached to the paper feed roller 2 described above.
Supply paper to. That is, after the roller 2 takes in the paper in accordance with the copying process, the next paper is supplied to this roller portion, thereby supplying the paper from a large-capacity stacker provided separately from the paper feed port 1. It's becoming like that.

This paper feeding device B is composed of a paper storage unit _B1 and a paper feeding unit _B2 , and this paper feeding unit _B2 is inserted and connected to the paper feeding port 1 of the processing device A. ing.

Paper storage unit B ₁ stores and stores paper.
Various structures can be adopted to separate and feed this paper by a predetermined amount, but the one shown is a paper storage frame 3 in which a pair of paper loading tables 4 are provided in the front and back directions in Figure 1, and a guide roller 6 is fitted to a guide rail 5. It is supported so that it can be moved up and down.

In particular, the paper mounting table 4 has an illustration angle α for the reason described later.
It is tilted so that the paper feeding direction is lower. This paper tray 4 is connected to a chain 9 that spans sprocket wheels 7 and 8 provided at the upper and lower parts of the storage frame 3.
It is fixed at A drive motor M is connected to the sprocket wheel 8 via a reduction gear mechanism including a worm gear 10.

A paper feeding means 11 is arranged above the storage frame 3 and is composed of a belt or a roller so as to come into contact with the top paper of the paper stack 4 and feed it out.

The one shown is a stay 1 installed on the top of the storage frame 3.
A paper feed roller 20 is attached to the roller 2 via a bracket 13, and a drive motor 21 is connected to the roller 20.

The leading end of the paper fed out by the paper feeding means 11 hits the first guide means 14 fixed to the storage frame 3 at an angle β shown, and as it moves along this plane, it is separated into one or several sheets. sent out.

The reason why the above-mentioned paper loading platform 4 is inclined at an angle α is that the stacked sheets can be kept aligned along the front surface of the storage frame 3 with this inclination, and there is no possibility that the stack will collapse.
Note that the angle β at which the first guide means 14 and the paper abut each other is selected to be an optimum value for separating the paper. At this time, since the paper mounting table 4 is inclined by an angle α, the first
The length l of the guide means 14 increases by that amount, and the leading edge of the paper hits the guide means at an optimal angle.
It is reliably separated while sliding over the long distance shown in the figure. The paper fed out from the paper storage unit _B1 in this way needs to be fed to the paper feed port 1 of the processing device A, but the paper feed unit _B2 , which is equipped with a guide that configures the paper path, is not shown in the figure. It is set up like this.

In other words, it is composed of a second guide means 15 that constitutes a paper path, and a frame 16 that is attached to and held in the paper feed port ₁ . It is freely supported on a shaft 17.

The second guide means 15 is composed of a normal plate-shaped guide, and the distal end of the first guide means 14 and the base end of the second guide means 15 are in the first position with respect to the sheet conveying surface.
The distal end portion of the guide means 14 is positioned above and the base end portion of the second guide means 15 is positioned below to form a gap G in the form of an upper and lower step.

The second guide means 15 is attached to a frame 16, and the frame 16 is configured to have a shape that fits the paper feed port 1, and the shaft 1 is attached to the storage frame 3.
7 is supported on the shaft.

Reference numeral 18 in the figure indicates a third guide means, which is provided on the frame 16 facing the second guide means 15, and guides the paper fed by the first guide means 14 to the second guide means.
The function is to deflect the light toward the guide means 15 side.

Reference numeral 19 indicates an idle roller provided at the tip of the second guide means 15 at a position facing the paper feed roller 2 on the processing apparatus A side.

With this configuration, the paper stored on the paper tray 4 is abutted against the first guide means 14 by the paper feeding means 11 and separated into one sheet or a desired number of sheets.
The paper is sent to the paper feed roller 2 of the paper feed port 1 along the second guide means 15.

In the illustrated example, when the first guide means 14 is attached to the storage frame 3, the height position can be adjusted using screws 25 as shown in FIG. The stepped gap G with the guide means 15 can be adjusted.

Therefore, to explain how the paper feeder B is attached to the processing apparatus A when the processing apparatus A is installed on the stand C as shown in FIG. 1, for example, the processing apparatus A is placed on the stand C and the A paper feeder B is slidably placed in a drawer-like manner on a rail base 22 that is integrally extended to a placing stand C. The illustrated 23 is designed to be able to adsorb to the outer wall of the processing apparatus A using a magnetic catch and at the same time determine its approximate position using a turbo 24.

Figure 3 A and B show the paper feed section unit of paper feed device B.
This is to explain the state in which B ₂ swings and takes the position following the paper feed port 1. A indicates that the paper feed port 1 is higher than the paper feed unit B ₂ , and B indicates the position of the paper feed unit. Unit B shows the case lower than ₂ .

Paper feeding device B and processing device A are placed on stand C, etc., and then installed after roughly aligning the positions and bringing them close to each other. At this time, even if the height positions of paper feed port 1 on the processing device A side and paper feed unit _B2 on the paper feed device B side are slightly different, this paper feed port unit
The second guide means 15 and paper feed port 1 that constitute B ₂
The frame 16 that fits and attaches to the storage frame 3 and the shaft 1
Since the unit B 2 is rotatably supported at a shaft 7, the unit B ₂ can be swung to a position following the paper feed port 1 between A and B in FIG. 3, and can be easily and securely mounted.

Further, the paper fed out by the paper feeding means 11 is guided by the first guide means 14 which is fixed and always in a constant posture with respect to the paper feeding direction, and then by the second guide means 15.
is at a position below which forms a step-like gap G, so that even in the different states shown in FIG. only is supported by the second guide means 15. For this reason, almost the same loops are drawn through FIG. There is no risk of buckling and jamming, and
In order to prevent this, there is no need to specially provide a paper feed roller in the middle of the guide means.

[Effect of the invention] The present invention has the above-mentioned configuration, and even if there is a positional shift between the paper exit portion of the paper feeder B and the paper feed port 1 of the processing device A, the paper does not fit into the paper feed port 1. Since the second guide means 15 to be attached together is vertically swingable, both can be attached reliably and easily regardless of slight positional deviation.

Moreover, the guide from the paper feed means 11 to the paper feed port 1 of the processing device is separated into a first guide means 14 and a second guide means 15, and there is a vertical step difference between the first guide means 14 at the top and the second guide means 15 at the bottom. shaped gap G
Since the first guide means 14 is a fixed guide always in a constant posture, the base end (right side in FIG. Supported second guide means 1
5, the paper jumps due to a stepped gap G, and only the leading edge of the paper is supported by the second guide means 15. Therefore, the second guide means 15
Regardless of the vertical swing position of the paper, the paper draws almost the same loop, and the paper fed by the paper feed means 11 will surely reach the predetermined position of the paper feed port 1.

[Brief explanation of the drawing]

Fig. 1 is an overall explanatory diagram showing an overview of the device, Fig. 2 is an explanatory diagram of the internal structure of the paper feeding device, and Fig. 3 A and B show details of the paper feeding unit B ₂ , before and after oscillation. FIG. 4 is an enlarged view of the main part to explain the state, and is an explanatory view of the conventional example. A... Processing device, B... Paper feeding device, C... Placing stand, B ₁ ... Paper storage unit, B ₂ ... Paper feeding unit, 1... Paper feeding slot, 2... Paper feeding roller, 3
... Paper storage frame, 4 ... Paper loading table, 5 ... Guide rail, 6 ... Guide roller, 11 ... Paper feeding means,
14...First guide means, 15...Second guide means, 16...Frame, 17...Shaft, 18...Third guide means, 19...Idle roller, 20
... Paper feed roller, 21 ... Drive motor, 22 ...
Rail base, 23...Magnetic catch, 24
...Tabo, G...step-shaped gap.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. On a paper loading table 4 which is detachably attached to the paper feed port 1 of the processing device A and supported in a paper storage frame 3 so as to be movable up and down toward the paper feed port 1. In a paper feeding device that sequentially feeds sheets of paper through the paper feeding means 11, the base end is fixed to the paper storage frame 3 and the leading end is arranged to face the paper feeding port 1, and the paper fed out by the paper feeding means 11 is fed. First guiding means 14 for guiding
and a second guide member having a distal end attached to the paper feed port 1 and a base end pivotally supported on the paper storage frame 3 to guide the paper from the first guide means 14 to a predetermined portion of the paper feed port 1. The guide means 15 forms a step-like gap G in the vertical direction, with the tip of the first guide means 14 facing upward and the base end of the second guide means 15 facing downward. The first and second guide means 14 and 15 feed the paper from the paper feed means 11 to the processing apparatus A.
A paper feeding device characterized in that the paper is guided to a paper feeding port 1 of the paper feeding device. 2. Utility model registration claim 1, characterized in that the first guide means 14 is fixed to the paper storage frame 3 so that the interval between the stepped gap G and the second guide means 15 can be freely adjusted. Paper feed device as described. 3. Utility model registration claim 1, in which the first guide means 14 is inclined with respect to the direction in which the paper is fed by the paper feeding means 11, and the paper is separated by abutting the leading edge of the paper against the first guide means 14. Paper feeding device as described in section.