JPS63196458A - Intermediate tray in automatic both-side copying machine - Google Patents

Abstract

PURPOSE:To precisely position a guide mechanism with the use of a simple drive mechanism by forming longitudinal and transverse grooves in an intermediate tray, and by connecting an end guide and a side guide, respectively to wires which are driven independently from each other and each of which is driven by a motor so that the end and side guides are moved along the abovementioned guides. CONSTITUTION:A guide drive device 3 is driven to drive an end guide 10 and a side guide, independently from each other through the intermediary of wires 25, 26. In this phase, data concerning the size of sheets is delivered from a control device in a copying machine, and therefore, an end guide pulley and a side guide pulley are rotated in accordance with the data. Thus, the guides are moved corresponding to the sizes of respective kinds of sheets, and therefore, they may surely press against the side surfaces of sheets even having a nonstandard shape so that the sheets may be surely positioned. Further, it is possible to simplify the drive mechanism.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a device for moving end guides and side guides for pressing and regulating the sides of paper in an intermediate tray used in an automatic double-sided copying machine. Particularly, 1
A guide drive device and a guide drive 1l using two motors.
The present invention relates to a device configured such that an end guide and a side guide can be moved separately using a pulley device provided in a device and a wire wound around a pulley [1].

(Prior Art) There are many types and formats of so-called automatic duplex copying machines that transfer images to both the front and back sides of paper to form double-sided copies. tray and
One intermediate tray is provided. Then, the image of the original set on the platen glass, or the original set automatically on the platen by a device such as an automatic document feeder, is transferred to one side of the paper, and then fixed to make a one-sided copy. The single-sided copied sheet is temporarily stored in an intermediate tray.

Thereafter, the single-sided copied paper housed in the intermediate tray is carried out again toward the image transfer position, and a copy is formed on the back side, thereby making it possible to obtain a double-sided copy.

In the above-mentioned automatic duplex copying machine, the size of the paper selected from the paper feed member such as the paper tray is determined by the original size, so the paper stored in the intermediate tray as single-sided copy paper is , each time it is copied, a different number of items will be accommodated.

However, the paper feeding member such as the paper feeding roller provided on the intermediate tray is provided at a fixed position on the intermediate tray, and the position of the paper feeding member does not change even when the paper size differs. Therefore, it is necessary to regulate the position from which the paper is sent out from the intermediate tray.

For this reason, in conventional automatic duplex copying machines, the intermediate tray is set to be tilted on both sides, and the single-sided copy paper stored in the intermediate tray is positioned and stored at the corner of the intermediate tray. There are things that are.

In addition, when the intermediate tray is installed in a horizontal state, as shown in Japanese Utility Model Application Publication No. 58-13529, movable end guides and side guides are provided on both sides of the intermediate tray with the corners sandwiched therebetween. , there is one that is configured to position the single-sided copied paper housed in the intermediate tray.

This example has a configuration as shown in FIG.
, 3a. As a means for moving this guide, a drive mechanism as shown in FIG. 8a is provided.

This drive mechanism includes an r provided on the end guide 10a.
S material 11a and leg member 16 provided on side guide 15a
A rack is formed in each of the racks 1 and 2, and the leg members are assembled in a perpendicular state, and can be driven by a single motor 18 by means of a gear 19 provided at the intersection.

(Problems to be solved by the invention) However, in the conventional device as described above,
For example, when tilting the intermediate tray, it is necessary to set the tilt angle to 20 to 30" in order to reliably set the side of the single-sided copied paper, and furthermore,
Depending on the size of the paper, it is necessary to be able to change the inclination angle.

Therefore, when providing such a swing mechanism, etc.,
It is necessary to set a large space for the intermediate tray inside the copying machine, which greatly hinders the degree of freedom in the design of the copying machine.

Furthermore, when a guide movement wJ mechanism as shown in FIG. Although it is effective for paper of irregular size, it cannot function satisfactorily for paper of irregular size.

In addition, if a device is provided in which the end guide and side guide are moved using separate motors, each guide member will work effectively for each size of paper. However, since the motor, the drive mechanism, and its control equipment are provided separately, there is a disadvantage that the cost increases significantly.

(Object of the Invention) The present invention eliminates the drawbacks of conventionally used devices as described above, and is capable of moving an end guide and a side guide with a single motor, and also has a driving mechanism for moving the end guide and the side guide. The purpose is to provide a device that can be simplified and easily adapted to any paper size.

(Means and effects for solving the problems) The intermediate tray of the automatic double-sided copying machine of the present invention is provided with a vertical guide groove and a horizontal guide groove, respectively, and an end guide and an end guide are provided along the vertical and horizontal guide grooves. The present invention relates to a device configured to guide side guides and regulate the vertical and horizontal sides of sheets stored in an intermediate tray.

In the intermediate tray of the present invention, the end guide and the side guide are connected to separately driven wires via coupling portions provided on the respective leg members, and the wires are driven by a single motor. It is configured to be driven using a guide drive device.

Furthermore, the guide drive device provided on the intermediate tray of the automatic double-sided copying machine of the present invention includes a pulley drive gear provided in the intermediate portion, and end guide pulleys provided adjacently above and below the pulley drive gear. and a side guide pulley, each of which is coaxially arranged,
Drive is performed by locking engaged protrusions provided on the end guide pulley and the side guide pulley, respectively, by a drive claw protruding from the upper side of a pulley drive gear driven by a motor via a gear. That's what I do.

Then, while driving each of the pulleys in a predetermined direction, via the wires wound around the upper and lower pulleys,
The end guide and the side guide are configured to be able to be driven separately.

When driving the end guide and side guide described above, the driving information of the stepping motor is controlled by the copying machine's vI based on information such as the paper size or document size and the reduction/enlargement magnification entered into the control panel of the copying machine.
This is done by rotating the end guide pulley and the side guide pulley based on the information output from the IE device.

Therefore, in the intermediate tray of the present invention, by driving the end guide pulley and the side guide pulley separately, the paper can be moved in accordance with each paper size, and even irregular-sized paper can be accommodated in the intermediate tray. Therefore, each guide can press the side surface of the single-sided copied sheet and perform a positioning action.

Since the positioning of the single-sided copied paper in the intermediate tray is performed accurately, when the copying machine is set to the reverse copy mode and the paper feed member feeds the single-sided copied paper from the middle tray. This means that the paper feeding operation can be performed in good condition.

(Embodiment) The structure of the intermediate tray of the automatic double-sided copying machine of the present invention will be described according to the illustrated embodiment.

As shown in FIG. 1, a paper feed member 5 is provided facing the paper feed side end of the paper tray 1 of the present invention. In addition, above the paper feeding member, members such as an ejection roller are provided for ejecting paper that has undergone single-sided copying after passing through the image transfer device and fixing device of the copying machine. The paper is configured to be stored in the intermediate tray 1 via a paper transport path.

An end guide 10 is provided at the end of the intermediate tray 1 on the side where single-sided copied paper is stored, and a side guide 15 is provided on the side thereof.
are each movably provided. These end guides 10 and side guides 15 are guided by vertical guide grooves 2 and horizontal guide grooves 3 provided in the lower part of the intermediate tray body, respectively.

In this embodiment, a leg member 11 is provided on the side of the end guide 10 in a protruding state, and the leg member 11 is configured to slide on a guide portion provided on the lower surface of the intermediate tray 1. Furthermore, the end guide 10 is moved along the plurality of vertical guide grooves 2. This leg member 11 is connected to the wire 25 via the connecting part 12,
The end guide 10 is moved by driving the wire 25 by the guide drive device 30.

Similarly to the end guide 10, the side guide 15 is also provided with a leg member 16 protruding from the lower surface of the side, and the leg member 16 is inserted along the horizontal guide groove 3 provided on the side of the intermediate tray 1. and move it. Further, the leg member 1
6 is connected to a wire 26 via a connecting portion 17, and when the wire 26 is driven by a guide drive device 30, the side guide 15 is moved.

In the drive mechanism using wires 25 and 26 of the present invention, the wire 25 is disposed across the end guide pulley 40 of the guide drive device 30 and the intermediate pulleys 21, 20 and 22, and the wire 25 is placed across the end guide pulley 40 of the guide drive device 30.
is driven, thereby moving the end guide 10 in the direction of arrow Y via the coupling portion 12.

Similarly, the wire 26 is a guide driving bag! 130
from the side guide pulley 50 to the intermediate pulley 21.2.
2, and when the side guide pulley 50 is rotated, the side guide 15 is moved in the direction of the arrow X via the coupling portion 17.

As shown in FIG. 2, the guide driving device 30 of the present invention includes an end guide pulley 40 and a side guide pulley 40, which are rotatably provided on a shaft 35, which is attached to a shaft 35 protruding from the lower surface of a tray bottom plate 31. It is composed of a guide pulley 50 and a pulley driving gear 60.

The pulley driving gear 60 is driven by the gear 69 of the motor 68 through the teeth 61 provided on its side surface and rotated around the shaft 35, thereby providing a driving force protruding above and below the pulley driving gear 60. The end guide pulley 40 and the side guide pulley 50 are each driven through the claws.

First, each member constituting the guide drive device 30 of the present invention will be explained based on FIGS. 3 to 5a.

In the end guide pulley 40 shown in FIG.
A shaft hole 4 is provided in the center of the main body of the end guide pulley 40.
2 is formed, and this shaft hole 42 is supported by the shaft 35, and a wire groove 41 is provided in the flange portion around the main body, and by winding the wire 25 around this wire groove 41, the end guide 10 move.

Further, as shown in the figure, two eye portions 45.48 are provided on the inside of the flange of the pulley main body, and engagement protrusions 46.49 are provided for the eye portions, respectively. The engaged protrusions are provided so as to protrude from the main body with respect to the eye portion, and their tip portions are bent inward. Further, the respective tip ends 46a and 49a of the engaged protrusions 46 and 49 are arranged symmetrically so as to coincide with a line passing through the center of the main body.

In the side guide pulley 50 shown in FIG. 4, like the end guide pulley 40, a shaft hole 52 is provided in the center of the main body, and a wire groove 51 is formed in the surrounding flange. A wire 26 is wound around it.

Further, an eye portion 55 is formed inside the flange, and an engaged protrusion 56 is provided for the eye portion 55. A bent portion is formed at the distal end portion of the engaged protrusion 56 toward the axis. Further, a protrusion member 58 is provided on the side wall of the eye portion 55 so as to face the tip portion 56a of the engagement protrusion 56.

In the above-mentioned end guide pulley 40 and side guide pulley 50 of the present invention, the engaged protrusions provided protruding from the respective eye portions are not covered when the main body of the pulley is made of plastic. The engaging protrusion is also integrally formed, and by forming the engaged protrusion as a relatively thin member, it has elasticity.

In addition, the above-mentioned protrusions for engagement are configured as wide members, and are arranged so as to protrude above and below the main body of the pulley. The pulley rotates and stops by being locked or swung by studs of other members provided corresponding to the mating protrusions, driving pawls, and the like.

Pulley drive gear 60 shown in FIGS. 5 and 5a
has a shaft hole 62 in the center and teeth 61 around the main body. Further, driving claws 65 and 66 are provided on the upper surface of the main body in a protruding state, and driving claws 67 are made to protrude from the lower surface. Of these driving pawls, the driving pawls 65 and 66 are not provided in alignment with the line passing through the axis, but as shown in the figure, the driving pawl 66 is provided at a position slightly offset from the axis. It is set up.

The distance from the axis of these driving claws 65 and 66 is 11, ρ
2 are provided corresponding to the positions of the engaged protrusions m46a and 49a, respectively. Further, the driving claw 67 is provided in a protruding state at the lower part of the driving claw 65, and the engaged protrusion 56 of the side guide pulley 5o with which this driving claw 67 is engaged is located at the tip end thereof. 56a is 1 distance from the axis
111.

Returning to FIG. 2 again, the combination state of each member of the guide drive device 30 of the present invention described above will be explained.

The tray bottom plate 31 of the intermediate tray 1 is provided with studs 32 and 33 protruding from its lower surface, and these studs are arranged in correspondence with the engaged protrusions 46 and 49 provided on the end guide pulley 40. are doing.

In addition, the side guide pulley 50 of the guide drive device M30
The shaft 3 is attached to the pulley holding plate 70 located at the 5th part of the
A shaft hole 72 is provided to support the lower part of the shaft 5, and a stud 75 is provided at a predetermined distance from the shaft center so as to protrude upward.

The distance of this stud 75 from the axis is set corresponding to the engaged protrusion 56 of the side guide pulley 50.

When the pulley rotates, each of these studs is engaged with the side surface of the protrusion to be engaged, and by pressing the protrusion to be engaged inward, the driving pawl is engaged with the tip of the protrusion to be engaged. Take action to prevent this from happening.

When the components of the guide drive device of the present invention described above are combined, the relationship between the engaged protrusion, the stud, and the drive pawl is as shown in FIG. 2a. The guide driving device 30 of the present invention starts to be driven from the state shown in FIG. 2a.

Next, the operation of the guide drive device of the present invention will be explained based on FIG. First, in the following explanation, as shown in FIG. 6a, a home position 10A, a paper position 10B, and a return position 10C are set for the end guide 10, and the end guide 10 is set at a home position 10Δ. , and the return position 10C.

Furthermore, a home position 15A1 and a paper position 15B are respectively set for each of the side guides 15, and the side guides 15 are located at the positions 115A and 15B.
58 and reciprocating movement is performed.

Although FIG. 6 describes the movement of each member constituting the guide drive device 30, the explanation will be based on FIG. 7 instead of the explanation of FIG. 6.

That is, the movement of each member of the present invention relates to each member of the guide drive device of the present invention shown in FIG. 2a,
It is considered that the table of FIG. 6 will be explained by explaining the operation of each of these members according to FIGS. 7a to 7e. In addition, the seventh
■ to ■ in the figure correspond to the symbols ■ to ■ in FIG. 6, respectively, and ■ in FIG. 6 indicates the same sentiment as ■.

FIG. 7a is the same drawing as FIG. 2a, but the home positions of the end guide 10 and the seat guide 15 are set at that position. Therefore, first, the pulley drive gear 60 is driven clockwise. At this time, the driving claw 65 of the gear 60 is engaged with the end portion 46a of the engaged protrusion 46 of the end guide pulley 40, and the end guide pulley 40 is rotated as one unit.

In this case, since the engaged protrusion 56 of the side guide pulley 50 is swung outward by the stud 75, the driving pawl 67 engages with the tip 56a of the engaged protrusion 56. You will be able to pass through without any problems.

Then, in this state, the end guide pulley 40 is rotated to the position shown in FIG. stipulated.

Next, when the pulley drive gear 60 is driven in the opposite direction, the end guide pulley 40 comes to a stopped state, and only the pulley drive gear 60 returns. When the pulley drive gear 60 passes the position shown in FIG. 7C, the drive pawl 67 of the pulley drive gear 60 engages with the protrusion 58 of the side guide pulley 50 and By pushing, the side guide pulley is rotated counterclockwise, whereby the end guide pulley 40 and the side guide pulley 50 are rotated.
It is stopped at a position as shown in Figure 7d.

The rotation of the end guide pulley 40 and the side guide pulley 50 is controlled by rotation angle information output from the υll1Il device of the copying machine or arbitrary information such as pulses and driving time given to the motor. By such an operation, the positions of the end guide 10 and the side guide 15 provided on the intermediate tray 1 are set in accordance with the paper size.

In the above-described state, the single-sided copy sheet is positioned in the intermediate tray, and the paper feeding member feeds the sheet for the back side copy mode of the copying machine.

When the paper is fed from the intermediate tray, each guide of the intermediate tray is operated to return to its home position.

In this case, when the pulley drive gear 60 is driven clockwise, the tip 56a of the engaged protrusion 56 of the side guide pulley 50 is located at a position corresponding to the drive pawl 67, so that due to their engagement, , rotated clockwise, the seventh
Return to the position shown in Figure C.

In contrast, the end guide pulley 40 remains stopped at the initial stage, but the pulley drive gear 6
At the final stage of clockwise rotation of 0, the driving pawl 65 comes into contact with the engaged protrusion 46 and is slightly rotated. By this rotation, the end guide pulley 40 is moved to the return position 10C, and at the same time, the side surface of the engaged protrusion 46 is engaged with the stud 32 and curved outward, so that the drive claw 65 and the engaged protrusion 46 are engaged with each other. The engagement relationship with the engagement protrusion 46 is removed, and the end guide pulley stops.

Next, when the pulley drive gear 60 is driven counterclockwise, the drive pawl 66 is engaged with the engaged protrusion 49, and the end guide pulley 40 is rotated counterclockwise, as shown in FIG. 7e. Then, as shown in FIG. 7a, the engaged protrusion 49 is moved to a position where it is swung by the stud 33, and is stopped at that position.

Therefore, by repeating the above-mentioned operations, the end guide and side guide of the intermediate tray are moved respectively for paper of various sizes corresponding to the document size in the copying machine, and the edges of the paper are moved by the guides. By pressing and positioning, paper can be fed.

As described above, the guide drive device of the present invention rotates each end guide pulley and side guide by a predetermined angle by rotating the pulley drive gear, and the rotation direction of the motor and the rotation ω By setting these, it becomes possible to obtain an apparatus that can accurately press the paper.

(Effects of the Invention) Since the intermediate tray of the automatic double-sided copying machine of the present invention has the above-described configuration, it can be used not only for standard paper but also for
It becomes possible to accurately position the end guide and the side guide even for irregular-sized paper, and it becomes possible to accurately perform the operation of feeding paper from the intermediate tray.

Further, since the guide drive device of the present invention is operated by one drive motor, the drive mechanism can be simplified, and manufacturing costs, power consumption, etc. can be reduced.

In addition, since the intermediate tray of the present invention has a compact drive mechanism, etc., it can provide more space inside the copying machine, increasing the degree of freedom in the design of the copying machine. This allows the device to be easily maintained.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the structure of the intermediate tray of the present invention, and FIG.
The figure is an exploded perspective view showing the mechanism of the guide drive '3 device of the present invention, Figure 2a is an explanatory diagram showing the positional relationship of each member of the guide drive '3 device, Figure 3 is a plan view of the end guide pulley, Fig. 4 is a plan view of the side guide pulley, Fig. 5 is a plan view of the pulley drive gear, Fig. 5a is a side view of the pulley drive gear, and Fig. 6 is the operation of each member in the guide drive device of the present invention. FIG. 6a is an explanatory diagram of the position of the guide in FIG. 6, and FIGS. 7a to 7e are explanatory diagrams showing the rotational operation of each member in the guide drive device, respectively. 8 to 8a are perspective views showing the structure of a conventional intermediate tray. Reference numerals in the figure 1... Intermediate tray, 2, 3... Guide groove, 5... Paper feeding member, 10... End guide, 15... ...Side guide, 20-22...
...Intermediate pulley, 25, 26...Wire, 30...Guide drive device, 31...
Tray bottom plate, 32, 33... Stud, 40.
...End guide pulley, 41...Wire groove, 42...Shaft hole, 45...Eye part, 46...For engaged Protrusion, 48...
Eye part, 49... Engaged projection, 50...
...Side guide pulley, 51...Wire groove, 52...Shaft hole, 55...Eye part, 5
6... Engaged projection, 58... Projection, 60... Pulley drive gear, 61...
・Teeth, 62...Shaft hole, 65-67...
Drive claw, 68...Motor, 69...
Gear, 70...Pulley holding plate, 72...
・Shaft hole, 75... Stud. (1 other person)''□゛゛Figure 2αFigure 3Figure 4・

Claims (2)

[Claims] (1) A vertical guide groove and a horizontal guide groove are provided in the intermediate tray, and an end guide and a side guide are moved along the vertical and horizontal guide grooves, respectively, to regulate the vertical and horizontal sides of the paper stored in the intermediate tray. In the device, the end guide and the side guide are connected to separately driven wires via coupling portions provided on the respective leg members, and the wires are driven by a single motor. An intermediate tray of an automatic double-sided copying machine, characterized in that the intermediate tray is configured to be driven using a guide drive device. (2) The guide drive device consists of a pulley drive gear provided in the middle, and an end guide pulley and a side guide pulley that are provided above and below the pulley drive gear. The engaging protrusions provided on the end guide pulley and the side guide pulley, respectively, are driven by drive claws that protrude above and below the pulley drive gear, which is coaxially provided and driven by the motor via a gear. The pulley is locked and driven to drive the pulley in a predetermined direction, and the end guide and the side guide are driven separately via wires wound around the upper and lower pulleys. An intermediate tray for an automatic double-sided copying machine according to claim 1.