JPS5852130A - Position changing device of sheet matching apparatus - Google Patents

Abstract

PURPOSE:To provide a matching apparatus for matching and locating a sheet according to the size of the sheet, which can match sheets efficiently by providing a pair of sheet regulating members for regulating the position of the sheet which can be separately located by one input. CONSTITUTION:When a crank pin 12 is rotated in the direction of an arrow E by a crankshaft 11, base plates 5 are moved in the opposite direction to C through a link member 10. At this time, a solenoid 17 is turned on electricity, so that a stopper 15 is pivoted on a shaft 16 to retire from a running locus of operating pins 13. While the base plates 5 are moved, on detecting that the base plates 5 reach a predetermined position, the solenoid 17 is turnd off to project the stopper 15, so that the operating pins 13, or the base plates 5 are located and stopped, whereby sheet regulating plates 3 supported on the base plates 5 by shafts 4 are located, and rotation of cams 7 cause the sheet regulating plates 3 to reciprocate for matching the sheets.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet aligning device. More specifically, in an image forming apparatus such as a copying machine or a magnetic recording device, sheets of a predetermined round size (for example, transfer paper, etc., hereinafter collectively referred to as sheets) are brought in one by one and subjected to image forming processing. This relates to a device that aligns sheets to prevent double feeding and jams when conveying and feeding sheets one by one.

Such sheet alignment processing is especially necessary in the case of a duplex copying device that transfers onto both sides of transfer paper, and once the sheet has been transferred to one side through a normal transfer cycle, it is further transferred to the back side of the transfer paper. Sometimes, in order to refeed the paper correctly,
It has been implemented.

Such a sheet aligning device is required to have a function to perform alignment according to all paper sizes that can be used in the image forming device, and if the size of the sheet used differs, the aligning device The position must be changed accordingly to perform the matching function.

This alignment function is generally performed by reciprocating and swinging the sheet regulating plate between the scheduled sheet entry position and the sheet alignment position, and the present invention also adopts this method in principle. .

In recent years, as a result of advances in various technologies in image forming apparatuses, so-called separation belts have been used. As a result of the adoption of electrostatic separation, which performs electrostatic separation at 1 kIn, and pressure fixing, which uses only pressure to fix toner, the transfer sheet feeding standard is no longer always in a fixed direction of the paper path. In an image forming apparatus equipped with a plurality of such sheet feeding standards, when aligning sheets as described above, it is necessary to position the sheet regulating plates in correspondence with both ends of the transfer paper.

With the separation method using the separation belt of conventional image forming equipment,
Since there are no multiple sheet feeding standards, it is only necessary to change the position of the sheet regulating plate on one side.
As a means for this, a certain input, for example, a cam i
The system uses a motor to change its position. However, no means has yet been proposed for changing the positions of both sheet regulating plates by one person.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a position changing device for a seat combination device that allows the sheet regulating plate to be positioned on the open side by manual effort.

A position changing device for a sheet aligning device according to the present invention is a sheet aligning device for aligning sheets that are carried in.
In the position changing device for changing the sheet position, a pair of sheet regulating members arranged opposite to each other and regulating the sheet position are arranged so as to be slidable in the sheet alignment direction 61 and 1.
These sheet regulating members are elastically biased in the same direction, and a pair of link members connected to the same driving source are respectively connected to the sheet regulating members, so that both sheet regulating members are driven by the driving source. At the same time, a stopper is provided to stop each sheet regulating member at a desired position, and a gap is provided so that the link member does not drive the sheet regulating member when the seat regulating member is stopped by the stop I#. It is characterized by:

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 schematically shows an embodiment in which the present invention is applied to a copying machine, and in the figure, l indicates a housing of a sheet aligning device, and 2 indicates an intermediate plate provided therein and on which sheets are stacked. . The middle plate 2 is elastically biased upward by a spring force, and sheets are carried in while being pushed downward by a cam or the like. In order to align the sheets placed on the middle plate 2, a pair of sheet regulating members 3 (only the left regulating member is shown in FIG. 1) are provided to regulate the sheet position. . The sheet regulating member 3 is supported by a substrate 5 by a shaft 4. The sheet regulating member 3 is the second
As shown in the figure, it is configured to align the sheets stacked on the intermediate plate 2 by swinging around an axis 4 between a solid line position and a broken line position. Sheet regulating member 3
In order to swing the sheet, a cam follower 8 provided on the swing camshaft 6 and arranged so as to be in contact with the nine cams 7 is shifted to the end of the sheet regulating member 3. A rotational force is input to the end of the swing camshaft 6 from the main drive motor (not shown) of the copying machine via a one-turn clutch, and the sheet regulating member 3 is reciprocated in the direction indicated by AB in FIG. oscillate. The other sheet regulating member (not shown in Fig. 1) facing this sheet regulating member also swings back and forth in the opposite direction at the same time, and as a result of this action, the seat is brought to a closed position between the sheet regulating members. Aligned. Note that by keeping the stop phase of the cam 7 constant, the sheet regulating member 3 can be left in a position closer to the direction of the arrow n when alignment is completed. At this time, a spring force is applied to the sheet regulating member in the direction of arrow B.
(not shown), when re-feeding the sheet, move the sheet regulating member to the guide Mkt! It is possible to have In the figure, numeral 9 indicates a paper feed a-2 for feeding sheets stacked on the intermediate plate 2.

The sheet regulating member 3 described above is arranged so as to be slidable in the direction of changing the sheet alignment position. For this purpose, the sheet regulating member 3
The board 5 is placed on a rail (not shown) and is slidable in the left and right directions in the figure.

Therefore, both sheet regulating members are elastically biased in the same direction, that is, the right substrate 5 shown in FIG.
A spring force (not shown) is applied in the direction of , and a spring force is applied to the left substrate 5 in the direction of the arrow.

In order to change the position of these sheet regulating members 3, a pair of link members 10.10 connected to the same drive source are provided, and the end portions of the link members 10. to drive both sheet regulating members.

The above-mentioned pair of link members 10.10 are provided at the ends of the crank rotated by the crankshaft 11, and
It is fitted into the ring 12 so as to be rotatable. Further, an actuation bottle 13 is provided at the bottom of each board 5, and the link member 1O is provided with an elongated hole 14 that is outside the movable range of the actuation bottle. 14.

By the rotation of the above-mentioned crank, the link member 10.10
The sheet regulating member 3 is moved via the step 7415, and a step 7415 is provided to stop the sheet regulating member 3 moved in this way at a desired position. The stopper 15 is configured to rotate around a shaft 16, and is provided with a solenoid 17 that electromagnetically drives the stopper 15, and the engagement between the elongated length 14 and the actuating bottle 13 is controlled by the stopper 15. , Parable 15
When the base plate 5 of the sheet regulating member 3 is stopped and running, the link member 10 drives the base plate 4 of the sheet regulating member in a diagonal manner to form =p.

The operation of the above device will now be explained with reference to FIG.

Figure 3 Company, Figure 1 viewed from below, crank bin 12
This is a superimposed picture of the two positions of the figure. ζζ As mentioned above, a spring force is applied to the right substrate 5 in the direction of arrow C in the figure, and to the left substrate 5 in the direction of the arrow. Therefore, forces act in opposite directions on the right and left boards, but since their functions are symmetrical, the right board 5
Let's explain using an example.

The crankshaft 12 is always #I by one revolution.
It is controlled to rotate in the direction of arrow E from the solid line position in FIG. 3 and return to the solid line position again. As the crank bin 120 times @, the link member 10 pulls the operating bin 13 against the spring force in the C direction, the board 5 moves to the rail (-
1/&) and start moving in the opposite direction to arrow C. At this time, the solenoid 1 is energized, and the solenoid 1 is rotated about the shaft 16, and is in a position away from the operating trajectory of the actuator 130. As the crankshaft 12 rotates, the board 5 begins to move in the direction of the arrow C due to the force of the spring O. I placed it in the trajectory of its movement! When the position of the violet is detected by an electronic switch, a photo sensor, etc. (not shown), solenoid 1 is turned off, and the force of a spring (not shown) is used to stop/stop the position.
The actuator 13 contacts and stops. 2nd bottle 12
continues to rotate, but the operating pin 13 only slides within the long shaft 14 without changing its position, and the crank pin 12 rotates once due to the action of the crankshaft! Return to the line position and stop.

The left board 5 performs a movement symmetrical to the right board S, so no special explanation is given.10 In this way, in response to the one-rotation crank and fO movements, the crankshaft 11 makes one revolution, and this rotation The sheet regulating plate 3 is positioned at a desired position, and then the cam 70 rotates to change the distance between the sheet regulating plates 3 over a required range 8. It swings back and forth between sheet alignment positions, and sheet alignment is achieved by this operation.

Thereafter, a spring force is applied to the middle plate 2 by releasing a cam or the like that pushes down the middle plate, and contact pressure is created between the sheet and the paper feed roller 9, and the sheet is conveyed.

According to the present invention, since both sheet regulating plates can be positioned by one person, the present invention is extremely effective as sheet aligning means for an image forming apparatus having a plurality of sheet feeding and loading standards.

[Brief explanation of the drawing]

FIG. 1 is a sectional view schematically showing a ninth embodiment in which the present invention is applied to a copying machine. Fig. 2 is a partial enlarged view of the vicinity of the sheet regulating member in Fig. 1; 3- is a view of FIG. 1 viewed from below. l... Housing 2... Middle plate 3... Sheet regulating member 4... Shaft 5... Board 6... Rocking cam shaft 7...
Cam 8 - Cam 7 Oror 9... Paper feed roller lO... Link member 11... Crankshaft
12...Crank pin/13...Operation 1
4...Length 15...Stock/Mother-16-・Shaft 17...Solenoid.

Claims (1)

[Claims] In a position changing device that changes the sheet alignment position in a device that aligns incoming sheets, a pair of sheet regulating members that are arranged facing each other and that regulate the sheet position are arranged so as to be slidable in the direction of changing the sheet alignment position. At the same time,
These sheet regulating members are elastically biased in the same direction, nine pairs of link members connected to the same driving source are connected to the cough sheet regulating member, and both sheet regulating members are driven by the driving source. KL so as to stop each sheet regulating member at a desired position, and a link member drives the sheet regulating member when the seat regulating member is stopped by the arm of the striker. A position changing device for a sheet aligning device, characterized in that a second r is provided to prevent the sheet alignment from occurring.