JPS6228620Y2 - - Google Patents

Description

[Detailed description of the invention] In copying machines and printing machines, when conveying paper or originals (herein simply referred to as paper), the state changes from using one edge as a reference to using the other edge as a reference. It may be necessary to change the transport state to In such a case, the paper being conveyed must be moved in the width direction, that is, it must be aligned, and the present invention relates to a device that performs this sorting.

Conventional paper width shifting devices use transport rollers installed at an angle of about 45 degrees with respect to the direction in which the paper travels, so that the paper gradually moves in the width direction as it advances. As a result, the size of the apparatus in the direction of movement becomes larger due to the amount of paper that advances until the width adjustment is completed.

The purpose of the present invention is to eliminate the above-mentioned drawbacks and to be able to sufficiently cope with the case where the amount of width shifting is large. The present invention is characterized in that the movement in the width direction is performed when the movement in the forward direction is interrupted by making it possible to switch between the two.

Next, a detailed explanation will be given based on an example shown in the drawings. 2b is a receiving roller driven by the motor 1, and the roller 2a rolls into contact with this receiving roller.
Reference numeral 3 denotes a side plate which supports the shafts of the rollers 2a and 2b and defines a conveyance path for the paper P. The upper and lower sides of the conveyance path are defined by guide plates 8 and 9. A roller 5b for driving in the traveling direction and a roller 5c for driving in the width direction selectively protrude from a window 9a provided in the lower guide plate 9, and roll into contact with a ball 5a protruding from a window 8a provided in the upper guide plate 8. A rotating shaft 53 is pivotally mounted on a substrate 29 fixed to the driving shaft 21 in parallel with the driving shaft 21 to fix a roller for driving in the traveling direction, and a bracket 51 is attached to the driving shaft 21 at a position symmetrical to the rotating shaft 53 of the substrate 29. A rotary shaft 52 is protruded from the bracket 51 in parallel with the drive shaft 21, and a rotary shaft 52 is protruded from the bracket 51 in parallel with the drive shaft 21.
The roller 5c for driving in the width direction is fixed at right angles to the roller 1, and both rotating shafts 52 and 53 are interlocked with each other by a timing belt 31.

The drive shaft 21 is rotatably supported by a bearing 26 provided on the side plate 3, and a pulley 2 loosely fitted therein.
3 is transmitted through a 1/2 turn clutch 14. The pulley 23 is driven by the motor 1 via the belt 4. A gear 33 meshes with a gear provided integrally with the pulley 23. gear 3
The shaft 34 of No. 3 is rotatably supported by the side plate 3, and the gear 32 is fixed thereto. The gear 32 meshes with the gear 27 that is loosely fitted on the drive shaft 21.
meshes with the gear 28 fixed to the shaft 54. Therefore, the rotation from the motor 1 is transmitted to the forward direction driving roller 5b and the width direction driving roller 5c via the gear train.

The 1/2 rotation clutch 14 has a flange 24 fixed to the drive shaft 21 and a drum 2 loosely fitted to the drive shaft 21.
2 and a spring 25. drum 22
has notches 22 at intervals of 180° on its circumference.
a, 22b, with which the pawl lever 13 engages. The pawl lever 13 is released by energizing the solenoid 12. The solenoid 12 temporarily energizes the pawl lever 13 into the notch 22.
When removed from a or 22b, the rotation of the pulley 23 is transmitted via a spring clutch composed of a spring 25 and drives the drive shaft 21.
When the pawl lever 13 engages with the next notch 22b or 22a and the drum 22 is prevented from rotating, the spring clutch will slip.
The drive shaft 21 rotates 180 degrees at a time. This rotation interchanges the positions of the advancing direction driving roller 5b and the width direction driving roller 5c.

Reference numeral 6 denotes a stopper that can move upwardly from the lower guide plate 9, and is lowered by the energization of the solenoid 11. A guide edge 7 guides a new reference edge of the paper P. 42 is a sensor for driving the solenoid 11; 41 is a sensor that detects that the paper P has stopped at the stopper 6; and 43 is a sensor that detects that the paper P has stopped at the guide edge 7.

Next, the operation of the device will be explained.

When paper P advances to position _P1 , receiving roller 2b advances it as indicated by arrow A. In this state, the window 9a of the lower guide plate 9
As shown in the figure, there is a roller 5b for driving in the traveling direction.
protrudes, and is driven by it to advance the paper P from position _P1 to position _P2 . This advancement is prevented by the stopper 6 in the protruding position. At this time, the sensor 41 detects the paper P and issues a signal. This signal temporarily energizes the solenoid 12 and disengages the pawl lever 13 from the notch 22b, so that the 1/2 rotation clutch 14 operates and the drive shaft 21 rotates by half a rotation. As a result, the advancing direction driving roller 5b disappears from the window 9a, and the width direction driving roller 5c protrudes from the window 9a instead. Before and after this switching operation, both driving rollers 5
Rotation is always applied to b and 5c. Therefore, the width direction driving roller 5c protruding from the window 9a comes into contact with the paper P and moves it in the direction of arrow B. Note that both rollers 5b, 5
Since it is the ball 5a that makes rolling contact with c, it can rotate in either direction and does not become a horizontal wheel. By moving the paper P in the direction of arrow B, the width adjustment is performed, and the movement is completed when the new reference edge of the paper P comes into contact with the guide edge 7. The sensor 43 detects this state and issues a signal. Based on the signal, solenoid 11 is energized and solenoid 12 is temporarily energized. As a result, the stopper 6 descends, opening the path for the paper P and 1/2
The rotary clutch 14 operates, the drive shaft 21 rotates half a rotation, and the positions of the rollers 5b, 5c are switched again.
The advancing direction driving roller 5b, which contacts the paper P instead of the width direction driving roller 5c, drives the paper P in the advancing direction again and sends it out along the guide edge 7 as shown by arrow C. The solenoid 11 continues to be energized, but when the next paper arrives at the position indicated by _P1 , the sensor 42 detects this and issues a signal, cutting off the energization and returning the stopper 6 to the raised position.

According to the present invention, a rotating shaft is pivoted to a substrate fixed to the driving shaft in parallel with the driving shaft, and a roller for driving in the advancing direction is fixed, and the rotating shaft is placed at a position symmetrical to the rotating shaft of the substrate and perpendicular to the driving shaft. A roller for driving in the width direction is fixed by pivoting, and both rotating shafts are linked by a timing belt. A stopper that stops the paper at a predetermined position in the advancing direction and a guide edge that stops it in the width direction are provided, and the stopper is moved up and down. A sensor is installed to drive the solenoid, a sensor to detect when the paper has stopped at the stopper, and a sensor to detect when the paper has stopped at the guide edge. Each sensor controls the rotation of the drive shaft to drive the paper in the forward direction. Since the rollers and the width direction driving rollers are configured to selectively move in and out of the conveyance path, the advancing direction driving rollers and the width direction driving rollers are always kept rotating in conjunction with each other. The shifting drive can be switched smoothly and quickly, and the entire device can be provided in a small size and at low cost.

[Brief explanation of the drawing]

Figure 1 is a front view of the first embodiment of the present invention, Figure 2 is a plan view of the same, Figure 3 is a side view of the same, and Figure 4 is 1/2 of the same.
FIG. 3 is a front view of the rotary clutch portion. 5b...Roller for driving in the advancing direction, 5c...Roller for driving in the width direction, 9...Lower guide plate, 14...
...1/2 rotation clutch, 21... Drive shaft, 41, 4
2,43...Sensor.

Claims (1)

[Scope of utility model registration request] A rotating shaft 53 is pivotally mounted on a substrate 29 fixed to the driving shaft 21 in parallel with the driving shaft 21 to fix the advancing direction driving roller 5b, and the rotating shaft 53 of the substrate 29 is
The rotation shaft 52 is pivoted at right angles to the drive shaft 21 in a symmetrical position to fix the width direction driving roller 5c, and both rotation shafts 52 and 53 are interlocked by the timing belt 31 to keep the paper P at a predetermined position in the traveling direction. A stopper 6 that stops and a guide edge 7 that stops in the drawing direction are provided,
A sensor 42 for driving a solenoid that moves the stopper 6 up and down, a sensor 41 for detecting that the paper P has stopped at the stopper 6, and a sensor 43 for detecting that the paper P has stopped at the guide edge 7 are provided. The rotation of the drive shaft 21 is controlled by the sensors 41, 42, 43, and the roller 5b for driving in the traveling direction
and a width direction driving roller 5c that selectively move in and out of the conveyance path.