JPH0275541A - Automatic paper feeding mechanism - Google Patents

Abstract

PURPOSE:To true up one side of the original papers on the guide side surface by transferring the original papers on the surface of an oscillating plate to the predetermined direction, either right or left of the progressing direction, by the oscillating plate oscillated by the high frequency generated by the high frequency power source. CONSTITUTION:An oscillating plate 12 oscillated by a high frequency power source 10 feeds the original papers 20 to move to the feeding direction D one by one from the lowest piece to the upper one, and stops a piece of the original papers 20 at a guide side plate 141. The restraining force F of a restraining mechanism 13 gives the moving force to the original papers 20 not only to the feeding direction D of the oscillating plate 12 but also to the transferring direction P to a feeding part for image sending. A feeding roller 15 pinches the lowest piece of the original papers 20 which skided along the surface of a paper receiving plate 14, with a guide band 16 so as to feed it as the fed original paper 21 by the rotary movement of itself.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic paper feeding mechanism that automatically feeds document sheets placed on a paper receiving plate one by one.

[Conventional technology]

A conventional automatic paper feeding mechanism is configured such that, when supplying and sending out original paper, the original paper is fed in the paper feeding direction through a preset paper feeding guide plate.

A conventional example is shown in FIG. 6, and will be explained. In FIG. 6, only the paper receiving plate of the automatic paper feeding mechanism is shown;
The mechanism for supplying and sending out the original paper on the paper receiving plate in the direction P will be omitted.

In FIG. 6, the paper receiving plate 9 is arranged so that the guide side plate 91 and the moving guide plate 92 are spaced apart from each other by a predetermined distance and are arranged substantially parallel to the direction P in which the original paper is transported.

The guide side plate 91 is one side plate of the paper receiving plate 9 in the document paper transport direction P, and the movement guide plate 92 moves almost parallel to the guide side plate 91, and the distance between the guide side plate 91 and the guide side plate 91 is set according to, for example, the Japanese Industrial Standards. , prepositioned.

The receiving side is set so that the setting value of the movement guide plate 92 is notified to the connected destination and recorded on the receiving paper of the original image.

[Problem to be solved by the invention]

As mentioned above, the conventional automatic paper feeding mechanism is configured to set the movement guide plate according to the size of the original paper and notify the recipient of the original image of the size of the original paper. In addition, when sending images of manuscript papers of different sizes, the size information of the largest manuscript paper (for example, Japanese Industrial Standards A version No. 4)
is notified to the recipient, and the movement guide board is set according to the size of the largest manuscript paper. Therefore, for manuscript papers with small dimensions (for example, B version No. 5), the left and right positions remain uneven and the margins are also manipulated. , on the receiving side, it is recorded on the set A version No. 4 recording sheet with uneven left and right positions, and it is cut and printed as B version 5.
There was a problem in that alignment was difficult to achieve the same size.

An object of the present invention is to provide an automatic paper feeder that solves the above-mentioned problems by vibrating a paper receiving plate and automatically moving the original paper on the paper receiving plate to either the left or right side in the transport direction. The goal is to provide a mechanism.

[Means to solve the problem]

In the automatic paper feeding mechanism according to the present invention, a paper receiving plate portion for conveying manuscript paper is composed of a high frequency power source, a vibrator, a diaphragm, and a suppression mechanism.

The high frequency power source generates a predetermined high frequency that causes the piezoelectric element to resonantly rotate in an elliptical orbit.

The vibrator is formed by arranging a plurality of piezoelectric elements that are independently connected to high-frequency power sources and that resonantly rotate in an elliptical orbit, arranged in a direction parallel to the plane of the elliptical orbit.

The diaphragm tightly fixes the vibrator, the elliptical orbital surface of which has a predetermined angle in the conveyance direction of the original paper, on the back surface, and also has a friction coefficient μ1 (between the friction coefficient μ2 of the original paper and μ1>
At least a portion of the paper receiving plate is formed by placing a manuscript paper in contact with a surface surface treated to have a relationship of μ2).

The suppression mechanism suppresses the original paper on the diaphragm to the diaphragm with a predetermined suppression force.

[Effect]

In the automatic paper feeding mechanism according to the above-mentioned means, the document paper on the surface of the diaphragm is transferred to either the left or right in the traveling direction by the diaphragm that vibrates with high frequency waves generated by a high frequency power source,
- The sides can be aligned with the guide side.

〔Example〕

Next, the automatic paper feeding mechanism of the present invention will be explained with reference to the drawings.

FIG. 1(A) is a configuration explanatory diagram showing one embodiment of the present invention. In FIG. 1, the automatic paper feeding mechanism includes a high frequency power source 10.
Vibrator 11. Vibration plate 12. Suppression mechanism 13, paper receiving plate 14
．． Guide side plate 141. Feed roller 15. Guide band 16.
Holding plate 17. A document sheet 20 having a restraining spring 18 and a band spring 19 and placed on the surface of the diaphragm 12 is sandwiched between a feed roller 15 and a guide band 16, and is sent out as a document sheet 21 by the feed roller 15. Ru. FIG. 71(B) is a rear view showing an example of the paper receiving plate 14 portion of FIG. 1(A).

A high frequency power source IO is connected to a vibrator 11, and the vibrator 11 is closely fixed to the back surface of a diaphragm 12. The diaphragm 12 forms a part of the bottom surface of the paper receiving plate 14, and the upper surface forms a part of the paper receiving plate 14.
is located slightly above the bottom surface of the document sheet, and sufficiently transmits vibrations to the original paper 20 on the surface.

Regarding the vibrator 11 and the diaphragm 12, FIGS.
This will be explained next with reference to the figures.

FIG. 2 is a side view and a rear view showing an example of the vibrator 11 and the diaphragm 12 shown in FIG. 1. In FIG. 2, the vibrator 11 has a piezoelectric element 16 made of a ceramic plate with a width of 4.85+11QI% and a length of 18.5 mm and a thickness of 0.5 mm.
8 sheets, arranged horizontally, width 18.5 mm, length 97.1
The tape is fixed to one side of a diaphragm 12 made of a stainless steel plate with a thickness of 1.5 mm and a thickness of 1.5 mm.

FIG. 3 is an explanation showing an example of the movement of the piezoelectric element 30 shown in FIG. 2. In FIG. When the piezoelectric element 30 resonates with high frequency waves (ultrasonic waves), the - point follows the high frequency waveform and draws an elliptical orbit as shown in FIGS. 3 (1) to (4). Therefore, the piezoelectric element 30 is arranged The vibrator 11 generates undulations due to wave motion, and also transmits the wave motion to the diaphragm 12 in close contact with the vibrator 11 .

FIG. 4 is a configuration explanatory diagram showing an example in which the high frequency power source 10 is applied to the vibrator 11 and the diaphragm 12 shown in FIG. Fourth
In the figure, the same components as in FIGS. 2 and 3 are given the same numbers and symbols, and their explanations will be omitted. In FIG. 4, the power source EoSin(ωt+φ) of the high frequency power source 10 is connected to the piezoelectric element 16 at both ends of the vibrator 110, and the power source E,
S i nωt is connected to each of the 12 piezoelectric elements 30 at the center of the vibrator 1 and coupled to the earth via the diaphragm 12 in close contact with the vibrator 1 . The original paper 20 placed on the surface of the diaphragm 120 is pressed against the diaphragm 12 by a pressing mechanism 13 made of rollers, such as by the weight of the pressing mechanism 13 . A diaphragm that generates wave-like vibrations when a high-frequency power source is applied has a document paper 20 suppressed by a suppression mechanism 13 with a suppression force F.
Move in the feed direction of the arrow. For example, in one experiment, the phase of the high frequency power supply was 0 degrees to 26.6KHz.
When moving in the positive direction up to 135 degrees, the result of not moving at 180 degrees and moving in the negative direction at 225 degrees is reported and becomes 0. Therefore, in this example, the forward and reverse feeding directions can be switched between 45 degrees and 225 degrees of phase.

Next, referring back to FIG. 1, explanation will be given. In FIG. 1, the same components shown in FIGS. 2 to 4 are given the same numbers and symbols, and their explanations will be omitted.

As shown in FIG. 1(B), the paper receiving plate 14 holds the original paper 20
It has a guide side plate 141 that is substantially perpendicular to one side with respect to the phase direction P of. The feeding direction of the diaphragm 12 is determined by the guide side plate 1.
41 points almost vertically.

Therefore, the rotation axis of the roller suppression mechanism 130 is parallel to the arrow in direction P. As described above, the diaphragm 12 vibrated by the high frequency power source 10 sequentially moves the original paper 20 upward in the feeding direction starting from the bottom sheet, and stops one piece of the original paper 20 on the guide side plate 141.

Further, the original paper 20 is moved in the feeding direction by the diaphragm 12, and is also subjected to a moving force due to the inclination of the paper receiving plate 14 in the direction of arrow P at approximately 90 degrees in the feeding direction. Suppression mechanism 1
The holding force F 3 applies a force to move the original paper 20 not only in the direction in which the diaphragm 12 is fed, but also in the direction P in which it is transferred to the sending section for image transmission. Therefore, the rotation direction of the roller suppressing mechanism 13 may be oriented in the direction P and in the middle of the directions.

One side of the original paper 20 is brought into contact with the guide side plate 141, and one side of the leading end is moved to the upper part of the feed roller 15.

The feed roller 15 pinches the bottom sheet of the manuscript paper 20 that has slid in contact with the surface of the paper receiving plate 140 with the guide band 16, and
It is sent out as a delivery document paper 21 by its own rotational movement. Therefore, the feed roller 15. Between the friction coefficients μa, μb, and μC of the guide band 16 and the manuscript paper 20, there is μ.
The relationship is C>μb>μC. The guide band 16 has one end fixed to the device frame, the other end fixed to the device frame by a band spring 19, and is pressed against the feed roller 15 by a restraining plate 17 having a pressing force. Guide band 16
is made of an ultra-high polymer material with a low coefficient of friction that makes it easy to slide.
The surface plane of the paper receiving plate 140 forms an acute angle with the holding plate 17, and one sheet of the original paper 20 sliding on the paper receiving plate 14 is sent out by the feed roller 15. The restraining plate 17 is restrained by the other end of a restraining spring 18 whose one end is fixed.1. Band spring 19
pulls the guide band 16 and presses it against the restraining plate 17.

Next, FIG. 5 is a back view showing an example of a diaphragm showing a second embodiment different from that shown in FIG. 1(B). In FIG. 5, a vibrator 41 uses a paper receiving plate as a diaphragm 42 and a guide side plate 3 on the back side.
41, that is, in the feeding direction at an angle of 45 degrees to the original paper feeding direction P. angle 45
The angle is just one example; if the angle is too acute, the purpose of aligning one side of the original paper with the guide side plate 341 will not be achieved. In the case where the suppression mechanism 43 is a roller, the illustration is made to maximize the feeding force in the feeding direction whose rotational direction coincides with the feeding direction of the vibrator 41. The optimum direction to be transferred in the transfer direction P is selected. Further, the suppressing mechanism may be other than a roller as long as it has a suppressing force that satisfies the above-mentioned document paper transport conditions.

In the above embodiment, the mechanism for feeding the manuscript paper by the feed roller was illustrated and explained. Coefficient of friction μ of the contact surface of the document paper of the holding plate or guide band that presses it against the paper receiving plate and feeds it one sheet at a time
When there is a relationship μ1>μ3>μ2 between the three, there is a feeding mechanism that eliminates the need for a feeding roller, so the above description does not limit the present invention.

In the above embodiment, the vibrator was constituted by an arrangement of 18 piezoelectric elements, but the above explanation regarding dimensions, materials, and phase conditions is merely an example, and the above explanation does not limit the present invention. FIG. 3 shows an example in which a moving waveform is generated on the diaphragm, and depending on the phase at two locations, movements in opposite directions cancel out the feeding action and stop the feeding. Furthermore, a return action is exerted in the phase of the waveform moving in the opposite direction.

〔Effect of the invention〕

As explained above, according to the automatic paper feeding mechanism of the present invention,
A vibrator made of a piezoelectric element vibrates a diaphragm and applies stress to the document paper on the surface in a direction perpendicular to the direction in which the document paper is transported, so that one side of the paper receiving plate can be used as a guide surface. , since one side of the manuscript paper can be aligned,
This eliminates the need for the trouble of arranging the manuscript sheets and the need for a moving guide plate, and also makes it possible to easily cut the recorded sheets.

[Brief explanation of the drawing]

FIG. 1(A) is a configuration explanatory diagram showing an example of the automatic paper feeding mechanism of the present invention, FIG. 1(B) is a rear view showing partial details of FIG. 1(A), and FIG. The part in FIG. 1 - a configuration diagram showing an example of details, FIGS. 3 (1) to (4) are explanatory diagrams showing an example of the operation in FIG. 1 of FIG. 2, and FIG. FIG. 5 is a partial detailed back view showing a different embodiment from FIG. 1(B) of the present invention, and FIG. 6 is a plan view of a paper receiving plate as an example of the conventional method. be. lO...High frequency power supply, 11.41... Group vibrator, 12.42... Vibration plate, 13.43...
... Suppression mechanism, 14, (42) ... Paper receiving plate, 2o ... Manuscript paper, 141.341 ...
・Guidance side plate. Agent Patent Attorney Uchihara Music 1st 2nd page 3rd page 4th page Kaya 5 @ Zth session

Claims (1)

[Claims] In an automatic paper feeding mechanism that automatically feeds document sheets placed on a paper receiving plate one by one, a high frequency power source that generates a predetermined high frequency wave is connected independently to create an elliptical orbit. a vibrator formed by arranging a plurality of piezoelectric elements that resonantly rotate in a direction parallel to the plane of the elliptical orbit; It is tightly fixed to the back, and the friction coefficient μ1 (friction coefficient μ of the original paper)
A diaphragm that forms at least a part of a paper receiving plate by placing a manuscript paper in contact with a surface treated to satisfy the relationship μ1>μ2 between the diaphragm and the manuscript paper on the diaphragm; An automatic paper feeding mechanism characterized by having a suppression mechanism that suppresses a diaphragm with a predetermined suppression force.