JPS581167A - Reciprocating driving device - Google Patents

Abstract

PURPOSE:To carry reciprocating control over a body to be driven at a high speed with high efficiency while holding a scanning speed unchanged by using a reciprocating driving device which performs smooth starting upon forward movement and inversion upon backward movement without generating an impact and moves forth at a constant speed and back at a high speed, and then varying the scanning length of an optical system. CONSTITUTION:A gear 39 rotates in a fixed direction at a fixed speed. The rotation of the gear 39 is transmitted through gear 38, 37, 36, 33, and 32, and a crank and a gear having a different number of teeth are selected to turn the crank 29 in a direction A. As the crank 29 starts rotating, a lever 30 starts crank in the direction A and increases speed smoothly. This motion is transmitted to a slider 48, which is put in linear motion to move a wire 501, thereby turning the rotation of the pulley 50 is transmitted through gears 53, 58, 59, and 62 to a shaft 63. In this case, the gear 58 has less teeth than the ger 59, so the angle of rotation of the pulley 50 is increased and its rotation is transmitted to a shaft 63.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention also relates to a reciprocating drive device used in an electrophotographic copying machine, for example, to move a document table or optical system, which is a driven object, back and forth. eAi.

Conventional ζ0IIO devices identify the original, move the optical system, and perform optical scanning. A dual IO system using a scanning tube has been adopted, but in either case, normal copying cannot be performed unless the optical scanning speed is constant.

In addition, in the case of repeated copying in which multiple copies are made from a single original, in order to improve copying efficiency, the return speed of the optical system, etc., which is unrelated to the copying operation, has been increased. It is necessary to finish the optical scan midway through and set the required minimum scanning length to shorten the scanning time.Furthermore, in the reciprocating optical system, the optical system is made with relatively low intensity. (starting up during forward movement)
Also, it must not be possible for a large impact to be applied during the reciprocating motion and reversal. This is also a problem that must be avoided even in a system in which the document table is reciprocated, causing the document to move or curl up.

Conventionally, a reciprocating drive device that satisfies the above-mentioned conditions is a system in which a mechanism for making forward and backward motion using a gear or the like as a power source is connected in order to move the legs all the way. A reversible clutch is used to drive a driven body such as an optical system by selecting a comb, a chi, etc. to drive a driven body such as an optical system. (d) e-motion beam 2. There are some types in which J1 is controlled by Te, and the backward movement is driven by the elastic force of a charged spring during forward movement. Among these, in those that use a clutch, the clutch's W! Driving the driven body tube at a predetermined speed almost at the same time as the wire causes it to become hot, and a very hot shock occurs when there is no time difference during forward movement and reversal, which is efficient. There is a drawback. 41. In the above method (A), the difference in O-coupling at the time of reversal is large, so a large amount of AM strike occurs. The faster the copying speed becomes, the more difficult it is to prepare for the shock, and countermeasures against shocks become a problem in order to perform high-speed copying.

In those that use a dedicated motor, the startup of the motor is gradual and does not cause the same imbalance as in the case of one using a single shaft, but
The disadvantage is that there is a huge loss of time and the efficiency is low. In particular, in the method (b) above, since an AC reversible motor is generally used, the number of rotations is determined by the number a, so the backward movement speed is only about twice the forward movement speed.
It is nine expensive.

Furthermore, in the case of using a return spring, it is inexpensive and simple, and has the advantage that no shock is generated because the start-up is gradual, and during return movement, the driven body is Due to the rapid acceleration, there is a drawback that a large impact occurs at 9 o'clock when the stop position is reached. 70 rounds requires a complex and expensive bookstore. - 6 o
Since the time loss is large, we cannot expect much improvement in the return speed.

In order to solve the above-mentioned conventional Oll system, a reciprocating drive device using a cam that rotates in a constant direction KwA and a cam 7# lower has been proposed. By appropriately designing the shape of the cam, the driven body can be controlled under ideal acceleration and deceleration conditions, and the start-up system during forward movement can be controlled without generating shock.・You can perform a reversal with Jin. There is also a degree of freedom in the speed ratio of the reciprocating motion, making it possible to perform copying at the most reasonable speed and efficiency.

However, in this method, the speed of the driven object is determined by the cam shape, so in order to perform optical scanning of the foot speed mentioned above, the shape of the cam must be precisely designed and processed using super-equipment. In addition, if it is desired to change the scanning length depending on the original size IfK, the cam mechanism is It is extremely difficult to use the 7J method due to the rounding design in which the following am of the cam is constant, and the 7J method, which changes the scanning length depending on the heat of the original and shortens the copying time tMi for small originals, is described in the previous application. Using a similar rotary motion to reciprocating linear motion conversion mechanism, converting this reciprocating linear motion into reciprocating wA@ motion using a plurality of Gooley wires (by selecting these pulley wires), a different method of obtaining a stroker is possible. be. However, this method also contains a number of advantages, including the fact that the scan length obtained can be increased (and therefore attached to the output shaft).

A googly that converts into a reciprocating-rotating motion and a club used for selection,
This was proposed in view of the shortcomings of the expanded version of the present invention, such as increasing the number of teeth in series with the output shaft and increasing the size of the device. Smooth forward motion
By using a reciprocating drive device that moves forward at a constant speed and back at a high speed, and by selecting a gear with an OA number of teeth, the optical system scans according to the size of the document. It is possible to reciprocate the driven object at high speed and with high efficiency by changing the length and keeping the scanning mode the same, by making the device similar to a conventional pulley. The purpose is to propose a simple and inexpensive 1 to 11 derivatization Sat.

Hereinafter, this embodiment will be explained with reference to page 11.

There is a photocopying machine. The electrophotographic photosensitive drum 1 rotates in the direction of the arrow. Around the drum, there is a charger and an optical charger according to the order of rotation. , the original device, the transfer device, and the cleaner are arranged, so the original 00
When * is projected and exposed, an electrostatic image is formed. ζ0
The Seiden image is developed with visible Cinna-IIK using the above **S. ＠Transfer the toner image to paper using a copying machine and fix the transferred toner image, while the photoreceptor after transfer is transferred to the above-mentioned Tarien/I)
So Tally Mushidasu.

This type of electronic photography is well known.

Original O is in the copy machine frame Kr55! i! flat plate oav4
Draft x - placed on #I3? Thjl, l1111 electric two 4, straw 2 moving l two svc Yoteiso O cellar 4,5
1 scan is performed during forward movement. And the manuscript O Kamono Party is Ill
.

4, Stl[K reflected and directed to the I/s lens, and the rusty part bundle that emitted the yl@ was fixed Set 7. The pickpocket was reflected on Hataket*.

) 21 incidentally, the photoreceptor IK enters the image of the original 00.

Book Two 4. I starts the solid line arrow direction K11Wh from the actual IIO position (forward movement start point), and starts document 0 ID scanning 1 from the position (4', 5') when it is good. Reached the location at 9 o'clock Km. Mirror 4.
5 is the predetermined forward movement end point c after moving Ka 4111゜5"
’), make one stroke and draw this position (4”’・5#’)
), it moves back to the direction of the round edge arrow and returns to the forward movement starting point (4, I). Original scanning from forward movement start point (4, 5) - Tsumugi position (<
', s') 1 is the pre-scanning section of the mirror 4 and the SO, respectively. R24. s reaches the respective predetermined O speed WL for scanning KJII while traveling in this section. at large position (4'
, S') to position (4#/, s#/) t-t- is seller 4. IC) in each oii scanning section To), 擢2-4
．． Company I slows down during this section O-taki. In the case of a small J[lIO, as shown by the original document O' that has been moved, the seller 4°S similarly starts the actual-arrow direction Ka movement from the forward movement starting point (4, Ii) and % (4', B' )C) When the position is reached?
Oyl scanning tWlam, (41N, fN) reaches the o position, and the document o'o* inspection ends at 9 o'clock. I two 4 degrees!
After 5rijEKall, the forward movement end point (4##/, S
”/) To move to the o position, move W and move backward from this position (4 “, ′) in the direction indicated by the broken line arrow and return to the forward movement starting point (4・S) K. Also, mirror 4. The IS reciprocates in parallel with the XS table 3, but the speed of the Mitsu-40 is twice that of the Denku 5. This is a detailed diagram of the large manuscript scanning device used in the 1st edition of the Ringe Zu Hiroshi.ゐ・ The first moving unit (boot 4 is fixed to the first moving unit support stand 9, and the end of the first moving unit unit 9 is slidably fitted to the 11-shaped guide shaft 10 by 1!Km) Therefore, Mitsu-4 runs along the Kfoid axis 10 which is integral with the platform 9.
The 28 electric movable rack 5 is fixed to a second movable erecting rack support 11, and the end of the 28 movable electric boom support 110 is slidably fitted to the guide shaft 10. Therefore, Mitsu-b runs integrally with the stand 11 along the guide axis IO. 12
is a wire. Is is the scanning system drive! - For To, f
-Pulley 14 is @j5 on pulley 13! has been done. And pulley 1! , 14 are rotatably supported by a shaft IB provided at a fixed position O in the copying machine. 16', 17'
*1g' and 19' are the husband kl [the shafts installed at the fixed foot position in the camera] @'#1? 'e 1 B
Pulleys l, 17, 18, and 19 are supported at '@19' so that they can rotate a, respectively. 21 is 1I24L one 11
It is fixed to a round shaft support [2GKliji! This is the axis that was created.

A moving goose 922.28 is supported on this shaft 21 so as to be rotatable relative to each other. Wire 12〇One end s24 is fixed at a fixed position inside the copying machine.The wire 12 is connected to pulley 22.
It is hung in the direction tt*S ~ Next, it is fixed to the wire 11 one by one 9 by the identification member 2s, then it is changed to the day 916, and then it is deflected by hanging it on the goo 917, Next, the pulley 1B is wrapped once or multiple times. wire 12
is then applied to pulley 18 to deflect 1, then to pulley 19 to change direction, then to pulley 2aKll to change direction 9, and end 2 is at the fixed position K11l of copy 111.
il has been determined.

27 is an endless wire. The wire 27 connects to the pulley 14 and the output described later! - ASS is attached once or multiple times to each of the following. Since the output pulley 28 rotates in the clockwise direction (true direction) K11 and the driving force is transmitted through the wire 2), the pulley 914 rotates in the true direction, and the drive pulley 134 rotates in the true direction.
It rotates integrally with the pulley 14 to drive the wire 12. With this, 'Et2-4.5 is from the forward movement point (4.5) to the forward movement end point (4'', I'') 1E is (
45r/, 51M11) and moves forward at a speed ratio of 1=bamboo. On the other hand, when the output pulley 28 rotates counterclockwise wA) direction (within 10,000 Kg), the pulley 14 rotates in one direction due to the driving force transmitted by the wire 2F, and the drive pulley 13 also rotates 9 Kg.
14 and the stone that drives the wire 12 in the O direction opposite to the above. 5′” Kab
It moves back to alkjlA(4,!$) at a speed ratio of 1:y10.

The w+5i3oa double drive shell is equipped with a sheepskin mechanism with a crank 211'a lever 30, crank 2
9 is connected to the shaft 31, and a gear 32 is fixed to the shaft 31. The gear 32 is fixed to the gear 33, and the gear 83 is fixed to the overrun endaktutte (wank, ikututti) 34. The round shaft 3s attached to the clutch and chi 34 is attached to the gear 36 1&! The ear 36 meshes with gears 3 and 40, and the gear +17 meshes with gear 39 via gear 38. The gear 40 is fixed to a shaft 41, and an electromagnetic clutch 42 is attached to the shaft 41, and a gear 43 is fixed to the clutch 42.

Further, the gear 43 meshes with the gear 33, and when the shoe 42 is energized, the gear 43 is fixed to the shaft 41, and when the clutch 42 is deenergized, the gear 43 can freely rotate relative to the shaft 41. and t, i,, t-ta, overrun endakura, chi 34, shaft 35t) rotational speed is the same as the rotational speed of gear 33), 9 o'clock, meshing, shaft 3s is fixedly connected to ear 36 It's been done.

At the front, a lever A-47 is integrally provided on the lever 21. The lever 47 is provided with a long groove 47K. This long groove 47! A 48° roller is connected to the moat. i
ii) Since this roller 48M is attached to the slider 48, the slider 48 has an IMI-shaped guide rail 49 fixed at a fixed position within the main body of the copying machine, and therefore the slider 48 is attached to the rail 49Ka*. The wire 501 is movable when the wire 501 is attached to the identification member 41. An endless wire is fixed to the slider 48! IQ is 9
50 and is hung on a pulley GO, which is rotatably supported by a shaft 51 in a fixed position. A gear s3 is fixed to the l-reel 50, and a gear 54 is fixed to the multi-gear 53.
．． It's 58 or so and it's singing for 4 hours. Dare 54. III is fixed to electromagnetic shoes, Te 56.60, respectively.
t@ and @O are each axis! It is attached to IT, 61. On the shaft 57, a gear 55 (not shown) is fixed to the gear 54, and at a position opposite to the gear 56, a gear 55 (not shown) is fixed.

Gear I8 and teeth in the opposite position to Ciro 0 @0 different ear 5i+
is fixed. Gear 51. It meshes with Hiro Gear 62. When the comb and chi s6 are energized, the gear s4 moves to the shaft 5.
Fixed for 7, the rotation of the pulley SO is a gear! $3.
54. ri lp, te SS, shaft 57゜' Gear 62tC@ can be seen through gear Ist, so it's a mess.

When the gear 5 is turned off, the gear z4 can freely rotate 11 times about the axis z7. Similarly, when the clutch 60 is energized, the gear 58Fi is fixed to the shaft 61, and the pulley 5o
The rotation is transmitted to the gear 62, and when the clutch 60 is deenergized, the gear 58 can freely make one rotation with respect to the shaft 61. 1 and gears 54 and 56. By changing the combination of ears 58 and 590 m, the lever 47. Slider 48. Wire 50sK) You can get it! - Even if the gear 500 rotation angle is constant, the gear 620 rotation angle can be set arbitrarily.

The gear 68 has a shaft 63KIIfi.

As shown in line 411, a rotatable WA rolling member 6 is attached to the shaft 63.
6 is supported. 11 Fold one end of the coil spring S into the 660-hole 66° of the rolling member @6! ! 1 has been inserted. Coil spring 6511E) other end 65. is rotating member 6
6 and provided on the shaft 63! 64 holes 6
It is inserted in 41. In addition, the rotary member 6 is fixed to the rotary member 6 so that the sleeve 640 length is 64 m, and the rotary member 6ii and the sleeve 164 are connected to the long groove 64. O Both ends in the longitudinal direction @64. In the range of @4/Seki, it is relatively hot at g1@, so the male 663 is inserted into the long groove 641 with the coil spring 65 in good condition due to To** self-tightening. The arm rotation member 66K and the spring 651
When the hot load is not applied due to tightening, the pin 66 is in contact with one end of the long groove 41 at the 641 position, and is fixed to the shaft 63 (Three f @ 4d set screw 1/5s6c). Co-rotating @lit@st on the same axis as axis @3
On the o-axis 663, Tsumu O Δ-Ray Endaku 2, Chiro 7 is 31
3), the clutch 67 is not fixed to the gear 68, so it is engaged with the gear 68 and the gear 39. In Terror 7, the axis ε3 and the ear 5soWA rotation direction are the same, and the rotating member SaCg from the axis 63 is wrong, & the rotation speed is the rotation speed of the ear 6).
Kt light.

Referring to gsg again, the output goo 9 is on axis 6 @ Hatake.
18 is kept constant.

Next, I will explain the operation of this mechanism.

Let's consider the case where the output of a printer (not shown) rotating in a constant direction and at a constant speed transmits sound to Zea 39, and Zea 39 rotates at a constant speed of τg, copying a manuscript ot*, which is currently very hot. i
If ear s9 is turning in the true direction K11, shoes, chi4
2 is deenergized, gear 390Fj A rotation is Zea 3B, 37,311.33° 32 pipe transmission] clutch 2s
When the crank 29 starts rotating in the true direction, the lever 3G narrows the movement and increases ThK gradually. This 011111 is transmitted to Sushi〆48.) Direct-retraction and 1) Quier io, meeting movement, l-lilo rotation. Shoes, Chiro 0 is energized, clutch s6 is turned off, rounding, goo 950 rotation l
Via l1vyss, ss, ss, s2, axis 63Pc@
Can be seen. ζHere, the number of teeth of ear 580 is the number of gear 590m)
Less large, Day 9KOLD rotation angle is increased, axis 6
3 can be conveyed. (Δ-30C) When the degree of A-man-niku-O oscillation increases, the rotation speed of the shaft 6310 increases to the extent of I-moB rotation.)
Then, the overrun secondary gear 1 engages, and the shaft 66s has a constant diameter of 68km1, so the rotational speed of the shaft 11g is a constant speed of the gear 311 transmitted through the gear @st. , and transferable for a period longer than or equal to
l! 1. It is impossible to rise.

In other words, % output! -Li28 has a constant fighting speed.

Furthermore, when the oscillation speed in the f-NOOOm direction is increased, the shaft 63 has an elastic property 11i! in the direction of tightening the 11 coil springs.
-t, rotationally displaced in one direction relative to the shaft 66-. Furthermore, as the clutch 8s continues to rotate, the degree of rotation in the true direction 4D11 does not decrease, and the glossy shaft 661 remains; Continue the equal rotation. Crank 29 continues a@ and A-4
0 reaches the end of the O swing to Mumannai, and the stone and Gary SO change to the Mu direction wA rotation], tV @ @ Tomi is three f () Jl Groove 64 Dew no fla ij
64 j K l'F tL 't' axis 6 g
m rotates a in the true direction at the same angular velocity as the axis 63. At this time, the overrun second inductor Qi 7 has been disconnected, and axis 6@■ has been disconnected from ear 6B. lever 30
It accelerates smoothly in the direction Kl, reaches the maximum speed, decelerates, and moves in the 01 direction to the end point of the OII movement (that is, the starting point of the upward swing) Kl smoothly and intermittently.

Since the output gear 28 is fixed to the axis is, it rotates in the same direction and at the same angular velocity as the axis 66. 981
．． The second scans 4 and 5 are as clear from the above! −
It reciprocates in response to the rotation of 928. Therefore, summary 1.11
The 12-scan 7 color 4.5 starts smoothly from each forward start point, and startup (INO forward start) is rapid. Kuken? -4 and 5 reach their respective forward movement start points, move back at high speed, and return to their forward movement start points while decelerating smoothly.

If the number of duplicates is set to 1, the above operation tall
Repeat) and the axis 661, therefore the trench 4.
The reversal from backward movement to forward movement in 5 is also transmitted smoothly.

Next, the case of a small original 0'0 will be explained.

Kula, Chi 42 is defeated, Ia 39's Kame Tenhiro Ia 38.
It passes through 37,311.4G and 43.33.31 and is transmitted to 2nd link 29. At this time, gear 33 is released from shaft 3s and gear 43 has a large number of teeth. The rotation speed of the crank 5eOn when the original is 0' is faster than that when the original is 0'0. Tara, chi 56 is S''g, and pulley 5 is deactivated because crack, terror 0 is deactivated.
OO-roll is f753.54. ! It is transmitted to the shaft 63 via the i1.11 gear, where the gear 840@ is transmitted to the ear 5IO@
Number j! The large rotation angle of the 9th gear l5OO is reduced and transmitted to the shaft @3, gears 54 and 55. The speed increase by the combination of the numbers of teeth #758 and #59 and the ears 40.43 is set so that the axis -3 changes at the same speed even if the size of the document differs. 9, $7s4 and ss, w
Due to the combination of 7BB and s*o teeth, the number of revolutions of the shaft 63 changes during one reciprocating swing of the lever 30), that is, the number of revolutions of the output coupler 28 changes, which is responsible for the scanning length of the original. It makes me feel hot.

-1IbK% gear 5m or double gear catch t
If the speed-increasing gears 40, 4301 and the combination t are increased so that the shaft 63 changes at the same speed, the scanning length can be changed to a plurality of scan lengths.

Further, in the embodiment described above, the OK7 rank 29 and the lever 30 were used to convert the unidirectional a-rolling motion of the shaft 31 into reciprocating motion. However, as shown in FIG. 6, a cam 29' was used instead of the rank 211, and instead of the Δ-30, the cam 29' was elastically pressed against the cam 2' by a spring 45'. −
It is also possible to use sQ'.・Cam 29' Noshi/4-
3Q' is! ! l & contacting cam wO shape is by one rotation of the cam) lever go't-a reciprocating swing, or flavor 1
The backward movement speed of G' is high speed (the forward movement speed). 5, the flavor is shaped so that there is a smooth reversal of the forward movement or b backward movement of the flavor, and a smooth reversal of the backward movement or b forward movement. The cam 2' is identified with the shaft 31, and the lever 30' is swingably supported on the shaft 52. A lever 53 is coupled to the lever 10'.

Even if the fifth Mouret Δ-mechanism is used, according to the present invention, the scanning speed of the document scanning means coxs is fast**wt3.
Since it is regulated by the means, it is difficult to process the cam surface.
g is not required.

Furthermore, in the embodiment described in FIG. The former is displaced relative to the latter while maintaining the relationship between the two. That is, the elastic member (spring 65) absorbs the difference in speed between the two.
The spring 63 may be provided between the shaft 31 and the crank 29 instead of between the shaft 63 and the output shaft 66s. The speed regulation means are too small, and this means that the speed limit is moderate.
The 1t-receiver may be installed in the driving force transmission path to the movable body (shaft 11@m) K.

In the above, an embodiment has been described with reference to the reciprocating part wkII device of the document scanning means (possible 1k19-% or movable document table) of a copying machine, but the present invention is not limited to this, but generally relates to reciprocating parts of movable bodies. 1. Applicable to drive equipment.

In this way, the conventional OIa double-drive drive device can only obtain one scan length, but with the present invention v4, multiple O scan lengths can be obtained in a simple way. It is possible to increase the number of mhos pictures per unit time!
! Moreover, it is possible to smoothly start the driven body forward, and at the same time, it is possible to keep the predetermined speed [rise at 1] for 1 m and maintain the predetermined forward speed exactly at one foot. . 9. It is possible to move backward at high speed, and at that time, the reversal from forward movement to backward movement - from backward movement to forward movement O! It is possible to perform both j and L rolls smoothly. If the rounding structure to achieve such an effect is simple, and it is easy to make it into a small lid, it will have various useful effects.

[Brief explanation of drawings]

Fig. 111 is an explanatory diagram of an electrophotographic copying machine, which is an example of an object to which the reciprocating drive device of this li@ is applied, and Fig. 2 is an illustration of the original scanning mechanism OIIt91iwA% Fig. 3 is the reciprocating drive device O main of the present invention! Part pipe e* drive mechanism O1! Mingzu, volume 4511
is an explanatory diagram of the same device O's forward blocking adjustment mechanism, and sg is the cam lever mechanism O1l that can replace the crank lever mechanism in Figure 3! It is a feather map. O...Original l-Photoconductor drum 2-・Optical slit 3-・Transparent--Original table 4-Coiling *M-ra support boo 2...Wire 13.14--Scanning system drive gear 16.1? , 18.1! ? Constant gear 22.23-Dynamic pulley! 8-Output gooley 29--crank 30-swinging Δ-32, 33, 16,
37, 38, 3G, 40.43-$747...A-
48-Sutsui〆-

Claims (1)

[Claims] 9Kt1 is added for reciprocating the driven body,
(by the motor) the driven body is rotated in the forward direction to give a constant speed [4D forward movement] through the ear and the clutch; When switching between low speed and high speed is performed in the forward direction via the rotary member, one end of which is engaged with the rotating member whose wJ rotation is made to correspond to one reciprocating movement of the driven body, and the coughing rotation member. A swinging lever is engaged with the other end of the skeleton swinging bar O, which is fitted so that one rotation of the rotating member causes a low-speed forward swinging motion and a high-speed backward swinging motion. The cough swing lever makes one reciprocating motion along one straight path by one reciprocating motion of the cough swinging lever. Gears with different numbers of gears and gears for reciprocating rotation, and a rattan shaft that is selectively connected to either of the GT and II gears for reciprocating rotation. , when the 20th axis of the armpit rotates in the forward direction, the rotational speed is the same as the rotational speed of the 10th axis).
G-g and 4 are equipped with a speed regulating mechanism that drives and connects the 10th axis and the N2 axis so that when the 01 rotation is in the reverse direction, the 20th axis O rotation is interrupted and the 10th axis is driven to the other side. Rotating member O - One rotation The driven body is made to reciprocate once with low speed O forward movement and high speed O return movement, and the armpit reciprocation OJ)
A reciprocating drive device characterized in that the loaf length can be changed.