JPS6040343A - Sheet paper feeder - Google Patents

Abstract

PURPOSE:To facilitate selection of required number of sheet papers to be fed, by deforming the sheet paper carrying means with correspondence to lifting/lowering of a screw member and feeding the sheet paper to the fixed receiving section. CONSTITUTION:Upon operation of a tray selection switch for selecting a tray 2 of free size, a stepping motor 10 will rotate by selected rotation to lift an elevating member 11 through rotation of a screw rod 6 thus to face the bugle- shaped open end of a flexible guide shoot 16 with the selected tray 2. Here, the sheet paper carrying means 12 comprised of coupling links 13-15 and carrying rolls 17-20 will deform to couple between the elevating member 11 and the paper receiving section 23. Upon rotation of the discharge roll 4 of selected tray 2 and each carry roll 17-20, the uppermost sheet paper 1a is fed to the paper receiving section 23 of copy machine 22.

Description

[Detailed description of the invention]

Industrial Application Fields The present invention provides equipment such as electrophotographic copying machines and facsimile machines for selectively printing paper sheets cut into various sizes and stacked together, or stacked sheets such as different types of manuscripts. The present invention relates to a sheet feeding device that can feed sheets. Conventional technology For example, in a conventional electrophotographic copying machine, or a paper storage tray is installed inside the machine, only about two or three paper storage trays can be stored. There are many sizes of originals such as 4, B5, A4, and A5, and in order not to waste paper, it is necessary to prepare a large number of sheets of paper corresponding to the original size, so the dimensions of the paper storage tray installed in the machine If the paper size does not match the original size, the paper storage tray must be replaced, which is a cumbersome process.Especially with recent electrophotographic copying machines, multi-step variable magnification is now possible. As a result, the frequency of replacing the paper storage tray described in J has increased, and it has become a problem that cannot be ignored from the standpoint of copying efficiency. The purpose of the improvement of the paper supply table is to provide a sheet supply that can easily select from among many types of laminated sheets and supply them to one device without having to worry about asking for help. SUMMARY OF THE INVENTION The present invention provides a sheet storage means arranged in the vertical direction at required intervals, and a sheet storage means provided on the paper discharge side of the sheet storage means. a helical part mechanism disposed vertically along the sheet ejecting side of the sheet storage means; a drive system for driving the helical member forward and backward; an elevating part that is engaged and moves up and down, and a side opposite to the sheet storage means, sandwiching the spiral member;

[A sheet whose both ends are connected to the fixed receiving section and the elevating section provided here, and which deforms in response to the lifting and lowering of the elevating section and transfers the sheet Z from the sheet storage means to the fixed receiving section. The main feature is that it consists of a conveying means. EXAMPLE Hereinafter, an embodiment of the present invention illustrated in the drawings (FIGS. 1 to 3) will be described. ■i Laminated sheet taro copy paper cut and stacked into various sizes such as A3, A4, A5, B4, B5, etc. The copy paper l is placed on vertical shelf supports 3 at required intervals in the vertical direction.
Paper sheets are stored in a paper tray 2 provided in a paper tray 2, sorted by size or arranged in two different vertical and horizontal directions in a stacked manner. Further, a paper ejection roll 4 is provided on the paper ejection side of each paper tray 2, and one sheet of copy paper 1 is produced by rotation of the paper ejection roll 4σ] by a paper ejection motor 5 directly connected to the paper ejection roll 4. When the number of sheets of copy paper 1 in the paper tray 2 decreases, the top layer of copy paper 1a of the stack of copy paper 1 in the paper tray 2 is kept in contact with the paper output roll 4. , the opening sheet [ray 2C] is driven upward little by little by a tray elevating means (not shown). tx The upper and lower intervals of the output IE roll 4 are set at constant intervals. Further, on the paper discharge side of the paper tray 2 (on the right side in FIG. 1), screw punches 6 oriented vertically through bearings 7 are rotatably supported in the vertical direction while being fixed in the vertical direction. A stepping motor 10 is connected to the lower end of the ft through a gooley 8 and a belt 97, and both ends of the elevating member 11 are screwed to the left and right screws 6. When the stepping motor 10 is rotated forward and backward, the elevating member 11 moves up and down. It is designed to be driven up and down. Furthermore, the elevating part 11 and the sheet receiving part of the dry type electrophotographic projector 22 capable of multi-stage magnification/copying are formed by three pairs of connecting links 13, 14, and 15 pivotably connected to each other. The connecting means 12 is connected to the flexible guide chute 6 which extends upwardly and downwardly toward the paper tray 2 in a trumpet shape, and protrudes inward from the guide shoe b16 so as to come into contact with each other. Four pairs of transport rolls 1.7.18.19.20 are pivotally attached to the joints and ends of the connecting means 12, and the transport rolls 17, I8.19, and a transport motor 21 (see FIG. ) are appropriately connected by belts (not shown), and the transport rolls 17, 18, and 19 are rotated at the same time by the operation of the transport motor 2, and the copy paper 1 discharged by the paper discharge roll 4 is copied. One step is taken to transport the paper to the paper receiving section 23 of the machine 22. The operation panel (not shown) of the copying machine 22 includes a tray selection switch T that allows you to select one of the five paper trays 2, and a copy switch T that allows you to specify a number from 0 to 9 and set the number of copies. A number setting switch group, a projection start switch 5, and other switch groups are provided. Further, an electronic control device 30 is built into the copying machine 22, and the electronic control device t30 has an input interface 31. ! :,R
There is an OM 32, a RAM 33, an 0PU 34, and an output interface 35. Furthermore, the input interface 31 includes a tray selection switch T1, a set of reverse copy number setting switches 24, and a copy start switch 5.
, other switch groups, various counters in the copying machine 22, and other input means are appropriately adjusted and input to the PU 34. Furthermore, the ROM 32 contains sequence programs necessary for normal copying operations, programs necessary to execute the flowchart shown in FIG.
0PU34 (0PU34 can read and write the data obtained in 13 operation and other data. Furthermore, 0PU34 executes the program and instructions stored in ROM32 according to the input signal from the input interface 31, and outputs the output interface 35. The operating parts of the paper ejection motor 5i (i is the number of the paper tray 2σ counted from the top of the paper ejection motor 5), the stepping motor 101, the conveyance motor 21, and the restorer 22 are connected to each other through the control signal. In the embodiment shown in FIGS. 1 to 3, the tray selection switch T is configured as described above, and the switch corresponding to the tray selection switch T (counting from the top) is ), the difference between the tray selection switch TL and the previously selected tray selection switch TL is determined, and if A is positive, the stepping motor 10G is set to normal rotation, and the motor rotation speed γ is set to the above value. Constant kf in IAI
It is claimed as the value multiplied by i1, and the stepping motor 10
rotates normally by the rotational speed γ, and the elevating member 11 rises,
The trumpet-shaped open end of the flexible guide shoe 16 corresponds to the selected tray 2. In addition, when m distribution A is negative, the stepping motor 10 is set to the reverse state and rotates in reverse by the number of revolutions γ corresponding to γ=IAI×k, and the lifting member machine 1 is lowered to move the relative to. Furthermore, if the difference is 00, you can proceed directly to the next step without going through the steps described above. Furthermore, when the copy start switch 25Z is operated without operating the copy number setting switch group 24 in advance, the paper ejection motor 5j and the conveyance motor 21 corresponding to the selected tray 2j are rotated, and the number of copies 2 is set to 1, and paper supply is started. Copying is performed only once. After setting the number of copies by operating the T-copy number setting group 24 and operating the copy start switch 2!5, paper is supplied and copies are made, and the number of copies 2 is subtracted for each copy. and stopped when 2 = 0. Furthermore, when changing the type of copy paper i to be supplied,
When the tray selection switch Tj is appropriately selected and pressed, it operates in the same manner as described above, and the trumpet-shaped opening end of the guide chute 16 and the elevating member 11 face the selected paper tray 2j, and the desired copy paper 1 is supplied. be done. Furthermore, by appropriately changing the spacing between the paper trays 2σ and the height of the shelf support 3, it is possible to quickly and easily select a wide variety of paper sizes and copy paper with different orientations, regardless of the size of the copying machine 220. and can be supplied. Moreover, since the stepping motor 10 is used to rotate the screw punch 6, there is no need for a detection device that detects the rotational speed of the screw punch 6 or the vertical position of the lifting portion stone 11 and feeds it back to the control device 30, thereby simplifying the structure. Further, since the screw punch 6 and the stepping motor 10 are used as driving means for the elevating member 11, the vertical position of the elevating member 11 can be accurately controlled. In the above embodiment, a stepping motor 10B is used for raising and lowering the lifting member 11σ, but a normal motor with a circular cutout or a circular motor may be used.
In this case, the detection device for detecting the vertical position of the elevating member 11 is a jacket, but the vertical distance t between each paper tray 2rn can be changed freely. In the example described in TCfIJ, a furnace using a spiral punch 6 of uniform advance as the spiral member, FIG. The elevating member 1 is mounted on the cylindrical roller 40 in which the descending portion 43 corresponding to the paper discharge roll 4 has a partial advance of 0.
It is also possible to fit both ends of the lifting member 11 into engagement with the spiral groove 42 of the guide bin 44Y protruding from the lifting member 11. [This allows the elevating member 11 to be accurately aligned with the paper discharge roll 4. Further, the paper ejection roll 4Z may be provided on the elevating member 11 so as to be movable back and forth, and in this case, one paper ejection roll 4 is sufficient. Furthermore, the copy sheet 1σ] may alternatively be processed as a copy sheet and paper. Invention σ] Effect In the present invention, a plurality of sheet storage means Z are arranged at required intervals in the vertical direction, and a sheet ejection means is provided on the sheet ejection side of the same sheet storage means. Means σ] A spiral portion I2 is disposed vertically along the paper discharge side, and includes a drive system for driving the spiral member forward and backward, an elevating portion that is engaged with the spiral member and moves up and down, and a heat exchanger. 7. A fixed receiving part and the elevating part [both ends Z of the sheet conveying means are connected to each other, and the same spiral part U''Y is provided on the opposite side from the sheet storing means. The sheet transport means 7 is formed so that the means deforms in response to the rise and fall of the elevating section and transports M sheets from the sheet storage means to the fixed receiving section. The drive ft1I is operated as appropriate so that the sheet storage means containing the sheets faces the scraping lifting section (n), and the sheet ejection means and Sheets #r can be fed as many sheets as required by driving the conveying means ! MI You can select the required sheet and feed it by simply turning it on.

[Brief explanation of drawings]

FIG. 1 is a side view illustrating an embodiment of a sheet feeding device according to the present invention, FIG. 2 is a block diagram of a control system of the same embodiment,
FIG. 3 is a flow chart thereof, and FIG. 4 is a side view of another embodiment. DESCRIPTION OF SYMBOLS 1... Copy paper, 2... Paper tray, 3... Shelf support, 4... Paper ejection roll, 5... Paper ejection motor, 6...
・Screw punch, 7...Bearing, 8...Guri, 9...Bell h, 10・°・Stepping motor, 11...Elevating part screw, 12...Connection means, 13.14, t5 ...Connection link, I6...Guide chute, 17.18.19
．． 20... Conveyance roll, 21... Conveyance motor, 22
... Dry type % setting switch group, 5... Copy start switch, 30...
・Electronic control device, 31...input interface, 32
...ROM % 33...RAM, 34...OP
U % 35°° Output interface, 40... Spiral part phase, 4]... Cylinder, 42... Spiral groove, 43... Paper discharge roll compatible part, 44... Guide bin, T ...Tray selection switch. Agent: Patent attorney Nozomi Ehara (1 person) Fig. 1 Fig. 2 ■ Fig. 3 Fig. 4 Procedures 1. Manabu Shiga, Commissioner of the Patent Office, September 19, 1980 (1. Indication of the case 1988) Patent Application No. 130900 1. Title of the invention
Sheet feeding device 1 3. Relationship with famous case to be amended Patent applicant address: 3-3-5 Akasaka, Minato-ku, Tokyo Name: Fuji Xerox Co., Ltd. Representative: Yotabe Kobayashi 4, Agent: Resident Address 03-501-2621 Name (67
84) 59 Buried Nozomi Ebara 1 person 5, Date of amendment order Voluntary 6 Number of inventions increased by amendment None ■ “In the tray” on page 7, line 12 of the specifications was changed to “in the tray 2j” , the 14th line [difference with selection switch Ti A=Ti-T
Add jJ to the difference between [21 and -1-jJ. The 3 figures in the middle box of the original drawing application will be replaced with the attached drawings.

Claims (1)

[Claims] A plurality of sheet storage means arranged at required intervals in the vertical direction, a sheet discharge means provided on the sheet discharge side of the sheet storage means, and a sheet discharge means of the sheet storage means. a spiral member disposed vertically along the side, a drive system that drives the spiral member in reverse and upward direction, an elevating section that is engaged with the spiral member and moves up and down, and the spiral section U. Both ends are connected to a fixed receiving part provided on the opposite side of the sheet storing means and the elevating part, and are deformed by 1 in response to the raising and lowering of the elevating part. Transfer paper sheets to reception department Tβ
A sheet feeding device comprising a sheet conveying means.