JPS60209453A - Control method of spring clutch - Google Patents

Abstract

PURPOSE:To reliably prevent the slippage of operation timing by preliminarly operating a spring clutch prior to the timing to actually operate passive members. CONSTITUTION:When a clutch stopper 59 having a coil spring 58 stuck to it at one end is made rotatable with an input shaft 55 kept rotating, the coil spring 58 is wound around the input shaft 55 and an output shaft 56 to connect both shafts; when the clutch stopper 59 is stopped rotating, the coil spring 58 is loosened into an un-connected state, the drive force can be intermittently transmitted to passive members 33, 34, and an object to be processed is transmitted to the passive members 33, 34. In addition, by intermittently operating the spring clutch, a clutch preliminary operation once setting the spring clutch into a connected state then setting it into an un-connected state is performed with the input shaft keyt rotating before the passive members are actually operated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of controlling a spring clutch used in a paper feeding device of a copying machine or the like.

(Prior Art) Spring clutches have heretofore been used with a simple structure in various applications where it is necessary to operate a passive member intermittently. For example, in the paper feed device of an electrostatic copying machine, the register, etc., which feeds the transfer paper to the transfer unit at predetermined timing and adjusts the transfer position, is connected to the drive source via a spring clutch, and is intermittently connected to the drive source through a spring clutch. It is now activated. This spring clutch has a coil spring disposed on the outer periphery spanning an input shaft and an output shaft, and a clutch stopper that locks one end of the spring clutch. The stop member is removable.

When the latch stopper marked -F is prevented from rotating, the coil spring becomes loose and the rotation of the input shaft is not transmitted to the output shaft, resulting in a disconnected state, and when the rotation of the latch stopper is released. As the input shaft rotates, the coil spring wraps around the input shaft J and the output shaft, and the tightening force J = t C. The two shafts are connected and the rotation is transmitted J. There is.

By the way, when the spring clutch is repeatedly operated intermittently while the input shaft is rotating, the first time the spring clutch is operated, it takes a certain amount of response time for the coil spring to tighten and drive force to be transmitted. However, when the spring clutch is subsequently disengaged, the coil spring does not fully loosen to its original state.C12 times [When activated after 1, the response time is shortened. Accordingly, the operation timing of the passive member connected to the output shaft is different from the first and second times.
For example, use a spring clutch for the lens 1-[]-ra that is pulled into the paper feeder of the above-mentioned J: Unicopy+ffi! In this case, when copying is repeated continuously, there is a problem that the timing of the operation of the roller to the lens 1 deviates from the first and second copying, resulting in a shift in the transfer position relative to the transfer paper. .

(Object of the Invention) In view of the above circumstances, the present invention has been developed to provide a first processing method when a passive member connected to the output shaft of a spring clutch is operated intermittently to repeatedly process a workpiece. and 2
To provide a control method for a spring clutch that can prevent the responsiveness of the spring clutch from changing from one time to the next, and can correctly control the actuation timing of a passive member.

(Structure of the Invention) The present invention has a coil spring disposed on the outer periphery spanning an input shaft and an output shaft, and one end of which is fixed to a clap stopper. When the clap stopper is free to rotate, the coil spring wraps around the input and output shafts to connect the two shafts, and when the clap stopper stops rotating, the coil spring loosens and becomes disconnected, causing intermittent drive. This is a method of controlling a spring clutch configured to transmit a horn to a passive member, in which the passive member is actuated by sending the object to be processed to the passive part H and intermittently operating the spring clutch. μ°ruJ: Before Uniruru,
While rotating the manual shaft, the spring clutch is first brought back to the connected state, and then the spring clutch is brought back to the unconnected state, thereby performing clutch preliminary operation.

(Embodiment) The figure shows a specific example in which a spring clutch controlled by the method of the present invention is used in a paper feeding device of a copying machine. Figures 1 and 2 show the general structure of the entire copying machine. A contact glass 2 is installed, and two upper and lower transfer paper cullets 3 and 4 with different transfer paper sizes are installed on the side of the transfer paper (=i l). .

An optical scanning device 5 is disposed in the upper part of the main body 1 of the copy 1 . This optical scanning device 5 includes an exposure lamp 6 and a mirror 7.
9, a lens 10, a mirror 11, etc. The exposure lamp 6 and the first mirror 7 are
4 and the motor 16 via Taradzunitsu I~15 etc.
, the second and third mirrors 8 reciprocate along the lower surface of the contact glass 2 at a predetermined speed.
．． 9 is adapted to reciprocate at half the speed of the mirror 7 of the exposure lamps 6 and 11. The exposure lamp 6 is turned on during forward movement to optically scan the document, and the reflected light passes through an optical path as shown by the dotted line in FIG. The image is projected onto the body drum 21. The optical scanning device 5 is also equipped with a detection plate 17 that moves together with the exposure lamp 6 and the like, and a scanning lens 18 that detects when the detection plate 17 moves forward to a predetermined position.
A return sensor 19 is attached to the main body 1 of the copying machine to detect when the return sensor 19 has moved back to a predetermined return position.

The photosensitive drum 21 is rotated in a predetermined direction by being driven by the motor 16 via a drum gear 1728, drum blocks j to 29, and the like. A main charger 22, a developing device 23, a transfer charger 25, a separation charger 26, a cleaner 27, etc. are arranged around the photoreceptor drum 21. and photosensitive drum 21
With the rotation of the main charger 22, the original image is slit-exposed on the surface of the photoreceptor drum 21 charged by the main charger 22 to form an electrostatic latent image, and then the visual image ¥! J is developed in the device 23! ζ
After that, in the transfer section 24 where the transfer charging device 25 is arranged, 1
The image is transferred onto 1λ paper.

Also, the arrangement of transfer paper force rollers 1 to 3 and 4 i\? A paper feed device 3o is provided between the transfer section 24 and the transfer section 24.

This paper feeding device 30 does not feed the transfer paper from the transfer paper rollers l-3 and 4, but includes paper feeding rollers 31 and 32, lower and upper registration rollers 33 and 34J3J, and pressing rollers 35 and 3.
6, a pair of guides 1]-ra 37, and a guide plate C38. If paper is fed from 4 to the transfer paper force roller 1 in the
-533, and is sent to the transfer section 24 at a predetermined timing, and the transfer paper is fed from the upper transfer paper current 3 at a predetermined timing. The registration rollers 33. are sent to the transfer section 24.
34 is intermittently driven by the motor 16 via spring clutches 51, 52 and the like operated by solenoids 41, 42. Transfer paper sensors 43 and 44 are installed in front of each of the registration rollers 33 and 34 to detect the position when the transfer paper is fed to that position. In addition, each paper feeding roller 31'+'
32 is also a crutch mechanism 47. operated by solenoid 4'5.46. It is now intermittently driven at Tanabata 16 via =l18 and the like.

Note that the transfer paper sent from the paper feeder 30 to the transfer section is sent to the fixing section 50 via the transport conveyor 7!19 after being transferred.

The spring clutches 51, 52 have a structure as shown in FIGS. 3 and 4, and are designed to continuously transmit rotational horns to registration rollers 33, 34, which are passive parts. . Lee Nara Spring Clutch 5
1.52 is connected to the clutch block 54 and is rotatably mounted on the III153 of the range +-, +-ra 33°34, and is connected to the IC hollow input shaft 55, etc.
A hollow output Q'llll 56 is fixed with a screw 57, and a coil spring 5 is arranged around the outer periphery of these.
8 and a clutch stopper 5 arranged around its outer circumference.
One end of the coil spring 58 is fixed to the tararapu stopper 59, and the other end is fixed to the output shaft 56.The human power shaft 55 is driven by the motor 16. When the cradle stop lever 59 becomes rotatable in the state that Output 't
When the clasp stopper 50 is rotated and rotated to the 11th position, the reaction of the clasp stopper 59 (the illumination spring 58 loosens), which prevents the transmission of rotational force. J, which is in a disconnected state, is sea urchin.

The clarati stopper 59 has a solenoid 41, /I
When the solenoid 41.42 is turned on, the rotation prevention member 60 is disengaged from the clutch stopper 59, and the spring clutch 51.52 is therefore connected. , the solenoids 41 and 42 are set to A], the detent member 60 locks the clutch stopper 59, and therefore the spring clutches 51 and 52 are disengaged.

FIG. 5 shows a control circuit 70 that controls the operation of each part of the copying machine. and a paper feed control section 7 that controls the operation of the paper feed device 30.
3.

The control program executed by the drive control section 72 is as shown in 7[1-b 1r-1-1- in FIG. 8J, when this program starts, 1. It is determined whether the print switch has been operated or not, and when the print switch is operated, the exposure lamp is turned on (Sudetsub AI).

A2). Next, when the transfer paper lens 43 just before the lower lens strainer 33 is turned on, the exposure lamp 6 etc. is turned on.
While turning on the scanning clutch for one movement, turn on the main electric device 22 (Shuft A3-1).
・△5). Therefore, when the transfer paper sent out from the C1 transfer paper cutlets 1 to 3 or 4 reaches just before the lower lens roller 33, the exposure operation is started. Next, when the scanning switch 18 is turned on, the solenoid 41 of the lower registration roller is turned on, and steps A6 and A7 are performed.
'), that is, when the exposure lamp 6 moves to the predetermined position 4, the transfer paper is sent from the lower lens roller 33 to the 11rh copying section 24, and the timing for feeding the transfer 71 is adjusted.

Furthermore, the first timer for setting the transfer charging start time is turned on, and when this timer times up, the transfer charger 25 is turned on from ζ (Step 88-1a). After that, after the transfer paper lens 143 is completely removed, the solenoid 41 for the lower registration mark, the main charger 22, the exposure lamp 6d3, and the scanning ramp are removed, and the exposure lamp 6, etc. is removed. Turn on the return clutch for backward movement (to steps 11 to A16)
. Also, a second timer is set to set the end time of transfer charging, and when this timer times out, the transfer charger 25 is turned off (steps A+7 to A19), and then when the return sensor 19 is turned on, Step A20 by tightening the return clutch. Δ21), thus stopping the exposure lamp 6 etc. at the original position.

Furthermore, it is determined whether or not there is a paper feed signal to determine whether or not to continue copying (step Δ22), and if there is a paper feed signal, the process returns to step A2. If you press it, it will be over.

Further, the control program performed by the paper feed control section 73 is as shown in frame Ir-h in FIG. 51.52 are controlled. When this program reaches star 1, it is first determined whether or not the print switch has been operated, and if it has been operated, a paper feed signal is set (steps 81 and 82). Next, when paper is to be fed from the upper cassette t-3, the solenoids 41 and 42 for each register 1 and 2 are turned on, and each of the spring clutches 51 and 52 is turned on.
When the paper is fed from the transfer paper current 4 of the top stage to the row 1'), turn on only the solenoid/II for the lower register [1-R]. Connected state (Slap B3-135).

Next, the third timer is set, and when this timer times up, the above-mentioned solenoids/11.42 are immediately set, and the recircling clutches 51,52 are set to a disconnected state (steps 86 to ( 39).

Next, when feeding the lower transfer paper cullet 4 or 1, turn on the solenoid 4G to activate the lower paper feed = 1032 I! "CIW z, feed the paper (steps B+o, Bn)." Also, when feeding paper from first-stage transfer paper force reds 1 to 3, solenoid/15
When the transfer paper sensor 44 is turned on after D 318 is activated, the rh solenoid 45 is turned on and the upper lens i. The roller 34 is activated (steps Bu to B15).

In this way, the transfer paper is sent to the lower lens roller 33.

At this point, when the transfer paper sensor 43 is turned on, the solenoids 42 and 46 are turned off (steps 816 to 818). If you continue to make continuous copies after the transfer paper tip 43 becomes A,
The flow from block B+o is repeated, and if continuous copying is not to be performed, the paper feed signal is reset to end (steps 819 to B21).

Control is performed until the transfer paper reaches just before the lower registration roller 33 through the flowcharts 11-1 to 11 shown in FIG. - The control for sending the transfer paper from the lower registration roller 33 to the transfer section at a predetermined timing is shown in FIG.
It will be carried out.

According to such a system 911 method, for example, when continuous copying is performed using the transfer paper in the transfer paper cassette 4 on the F stage side, at the beginning, the workpiece is
On floor m, the spring clutch 51 is connected for a short time, and the registration loan 33 idles.At this time, after the solenoid 41 becomes A, the spring clutch 58 is tightened (the rotational force is It takes a certain amount of time for the response to be transmitted, but from this state it becomes disconnected.)Ct) If the human power shaft 55 is rotating, the coil spring 58 returns to its original state. The next time the spring clutch 51 is activated, the response time is shortened, and thereafter the tiL response I, 1 remains constant.
2 Ru. Therefore, after continuous η, a constant response of 11.1 (
・If the lens I-[1-ra 333 is operated intermittently, the operation timing of the lens I-[1-ra 333 is
A situation in which the two transfer positions on the transfer paper are distorted due to misalignment is reliably prevented. In addition, when continuous copying is performed using the transfer paper cullet/3 glue 1λ copy paper on the upper stage side, τ6
A similar effect will be exerted.

A3. The method of the present invention is applicable not only to the paper feeding device of a multifunction machine, but also to various devices and apparatuses having a structure in which a passive member is driven intermittently using a spring clutch.

(Effects of the Invention) As described above, in the case of intermittent driving of the passive member connected to the output shaft of the spring clutch, the present invention avoids preliminary operation of the spring clutch before the time when the passive member should be put into actual operation. This improves the responsiveness of the passive part during actual work and reliably prevents deviations in actuation timing.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view of a copying machine shown as an application example of the present invention, Fig. 2 is a rear view of the same, Fig. 3 is an exploded perspective view of a spring clutch, Fig. 4 is a sectional view of the same, and Fig. 5 is a control The circuit block diagrams, Figures 6 and 7, show the control flow delay 1 to 1.
It is. 33.34... Ren roller (passive member), 51.
52...Spring clutch, 55...Input shaft, 5
6... Output shaft, 58... Coil spring, 59.
...Tallage stopper, 70...control circuit. Figure 4 Figure 5

Claims (1)

[Claims] 1. When a coil spring is placed on the outer periphery of the input shaft and the output shaft and has one end stopped by the clutch stopper, and the clutch stopper is rotatable while the input shaft is rotating. ] The spring wraps around the human power i11+ and the output shaft, connecting these two shafts,
When the clarator stopper is stopped from rotating, the spring is in the M/v'C disconnected state. This is a method of controlling the input shaft by intermittently operating a spring clutch when the material to be processed is sent to the passive member. A method for controlling a spring clutch, which is characterized in that, while the spring clutch is being rotated, a clutch preliminary operation is performed in which the spring clutch is first brought into a connected state and then changed to a disengaged state.