JPS647878B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automatic printing device for a copying machine that prints on the surface of a copy sheet by swinging a data stamp main body provided with a stamp on the outer surface along the transport direction of the copy sheet. When the data stamp main body is automatically moved back by a spring force after printing is completed, the data stamp main body is braked near the end of the back movement to buffer the impact when the back movement stops. The present invention relates to a main body reciprocating device.

An embodiment of the present invention illustrated in the drawings will be described below.

Reference numeral 1 denotes an automatic printing device (not shown) disposed on the ejection side from the fixing device of the copying machine;
Both frame side plates 2 are provided with directions perpendicular to the direction of conveyance of the copy paper 0 (hereinafter simply referred to as the width direction);
A data stamp main body rocking shaft 3 with a square cross section in the center and oriented toward , and a stamper cam shaft 4 directly below the rocking shaft 3 and oriented in a direction parallel to this are rotatably connected at both ends. There is.

Further, above the swing shaft 3, a support shaft (not shown) is integrally fixed to the frame side plate 2, oriented in a direction parallel to the swing shaft 3, and a pedestal (not shown) can freely slide on the support shaft. The frame is fixed to an endless chain (not shown) that extends in a direction parallel to the support axis, and one sprocket of a pair of sprockets (not shown) that supports the chain is oriented horizontally. It is integrally fitted to the rotating shaft (not shown) of a directional movement motor, and the frame can be moved from side to side along the width direction by forward and reverse rotation of the motor in response to a control signal from a control device (not shown). It's summery.

Further, support side plates 5 are integrally suspended from both ends of the pedestal, and copy paper bounce prevention plates (hereinafter simply referred to as prevention plates) 6 oriented in the outer horizontal direction are integrally attached to the lower ends of both support side plates 5. and
A guide edge portion 7 of the prevention plate 6 near the fixing device is bent obliquely upward.

Furthermore, a pivot part 8 that slidably supports the swing shaft 3 is rotatably fitted to each of the supporting side plates 5, and a data stamp main body part 9 is attached to the swing shaft 3 between the two pivot parts 8. is fitted in a slidable manner, and coil springs 10 are interposed between both the pivot parts 8 and both sides of the data stamp main body part 9, and between one of the pivot parts 8 and the data stamp main body part 9. When the side plate 5 is moved left and right by the movement of the pedestal (not shown), the data stamp main body 9 is moved left and right via the coil spring 10.

Further, the data stamp main body portion 9 has a convex base portion 11.
, a gate-shaped case 13 that is removably attached to both ends of the base 11 with mounting screws 12, and two lower parts and one upper part of both side parts 14 of the gate-shaped case 13.
Three shafts 17 are fitted in the direction perpendicular to the swing shaft 3, four sets of pulleys 18 are fitted on the same shaft 17 in a direction perpendicular to the respective shafts, and The four endless belts 19 made of a highly elastic material such as rubber, the partition plate 21 interposed between the endless belts 19, and the pulley 18a fitted to the upper shaft 17a are elastically connected. An opening 16 is provided at the top 15 of the gate-shaped case 13, and the stamp 20 of the endless belt 19 is inserted outwardly from the top 15 through the opening 16, as shown in FIG. It is formed so that it protrudes slightly.

Further, the circumferential surface of the top portion 15 of the gate-shaped case 13 and the surface of the stamp 20 of the endless belt 19 (see FIG. 1 for details) are aligned with the center line of the swing shaft 3 as shown in FIG. It is formed into an arcuate surface.

Furthermore, as shown in FIG. 3, the data stamp body 9 is closer to the fixing device (not shown) (left side)
An ink supply roll 23 is pivotally supported on the ink supply roll 23 so that ink is deposited and supplied onto the surface of the stamp 20 when the data stamp body 9 is swung downward.

Therefore, the transport direction X of copy paper 0 (see Figure 3)
A mechanism for reciprocating the swing shaft 3 in accordance with the transfer position of the copy sheet 0 is disposed on the outside of the frame side plate 2 on the left side when viewed from above.

First, a pulley 25 is fitted onto a drive shaft 24 (parallel to the swing shaft 3) connected to a copy paper movement drive system (not shown), and an idler pulley 28 is loosely fitted onto an idler shaft 27 parallel to the drive shaft 24. A belt 26 is stretched between the pulley and the idler pulley 28, and a spring clutch 29 is connected to the idler shaft 2 adjacent to the idler pulley 28.
7, and when the spring clutch 29 is stopped by the latch 30,
The rotational force of the drive shaft 24 is not transmitted to the idler shaft 27, but when the latch 30 is released, the rotational force of the drive shaft 24 is transferred to the pulley 25, belt 26,
The power is transmitted to the idler shaft 27 via an idler pulley 28 and a spring clutch 29.

Further, a pulley 31 is integrally fitted to the idler shaft 27, and a pulley 33 (having a diameter twice the diameter of the pulley 31) rotatably supported on the swing shaft 3 via a bearing 34 and the pulley 31 and a belt 32 are spanned.

Furthermore, as shown in FIG. 14, two pins 35 are protruded from the inside of the pulley 33, and a clutch plate 36 is integrally fitted to the swing shaft 3 adjacent to the inside of the pulley 33. Same clutch plate 3
A latch 37 engageable with the pin 35 on the outside of the pin 6
A spring 38 is tensioned in the direction in which the latch 37 engages with the pin 35, as shown in FIG.

Further, a support plate 39 and an adjustment plate 40 are fitted to each other so as to be located inside the clutch plate 36 and can rotate relative to the swing shaft 3. The outer end of the coaxial shaft 41 has a roller 4 in contact with the latch 37 to release the latch 37 from the pin 35.
2 is provided, and the adjustment plate 40 is formed with a circular arc groove 43 centered on the swing shaft 3, and as shown in FIG. The adjustment plate 40 is fixed in a suitable position with a bolt 44, and the timing at which the latch 37 is removed from the pin 35 can be adjusted as appropriate.

Furthermore, a double-acting device is disposed adjacent to the adjustment plate 40, and the double-acting device 45 includes a pair of couplings 4.
6, 47 and the inner circumferential surfaces of the coupling rings 46, 47, and both ends of the coupling rings 46, 47
A coil spring 49 is integrally fixed with a screw 48 to one of the fixed coupling rings 4.
6 is integrally fixed to the adjustment plate 40 or the frame side plate 2, and the other rotary coupling 47 is connected to the swing shaft 3.
It is fitted into the .

Further, a stamper operation cam 50 is positioned outside the frame side plate 2 and inside the belt 26 and is integrally fitted to the swing shaft 3.
The stamper camshaft 4 is driven to swing via the link mechanism 51 by the rotation of the stamper camshaft 4 .

In the link mechanism 51, as shown in FIG.
is pivotally supported on the main link 55 via a pin 54, and the release lever 53 is biased counterclockwise in FIGS. 17 and 18 to release the stopper 5.
A spring 57 is tensioned between the release lever 53 and the main link 55 so that the release lever 53 and the main link 55 collide with each other.
5 and a bell crank 61 integral with the stamper camshaft 4 are connected by a rod 59, and the bellcrank 61 and the frame side plate 2 are connected so that the stamper camshaft 4 is oscillated counterclockwise in FIG. A return spring 60 is tensioned between the two.

Further, a push-up cam 62 is integrally fitted to the stamper cam shaft 4, and a support lever 64, which rotatably supports a rubber stamper roller 63 as a push roller at its tip, is pivotally supported to be able to swing up and down. The cam follower 65, which is pivotally attached to the rotating shaft of the stamper roller 63, is in contact with the push-up cam 62, and in the state shown in FIG.
3 is positioned downward, but when the stamper cam shaft 4 is swung clockwise by pressing the cam ridge of the stamper operating cam 50 against the roller 52, the cam ridge of the push-up cam 62 causes the stamper roller 63 to move downward.
is being pushed upwards.

A switching data stamp main body 66 is provided adjacent to the data stamp main body 9 in the form of a regular pentagon, and is rotatably fixed with respect to the swing axis 3 by 72 degrees as necessary.
Other data markings as required are now performed.

Since the automatic printing device 1 according to the embodiment of the present invention shown in the drawings is constructed as described above, when the lateral movement motor (not shown) is properly reversed and then stopped, the data stamp main body 9 is The data stamp main body is guided and supported by the swing shaft 3, and the copy paper 0
is set appropriately on the printing position in the width direction.

The copy paper 0 that has been copied reaches the automatic printing device 1 and passes below the data stamp main body section 9.
When it is detected that the copy paper 0 has reached just before the print position in the paper feeding direction and the latch 30 is released, the rotational force of the drive shaft 24 is applied to the pulley 25 and the belt 2.
6. It is transmitted to the pulley 33 via the idler pulley 28, spring clutch 29, idler shaft 27, pulley 31 and belt 32, and the pulley 33 is rotated clockwise in FIG.

Then, the pin 35 of the pulley 33 immediately engages with the latch 37, and the clutch plate 36 rotates clockwise in FIGS. The data stamp body 9 is swung counterclockwise from the angular position shown in FIG. 3.

Then, just before the stamp 20 of the data stamp main body 9 approaches the copy paper 0, the first
7 to 18, the cam ridge of the stamper operation cam 50 rotating in the direction of the hour hand comes into contact with the roller 52, the release lever 53 is pushed to the left while being locked by the stopper 56, and the main link 55 is moved to the support pin. 58, the bell crank 61, stamper cam shaft 4, and push-up cam 62 are rotated clockwise in FIG. The stamper roller 63 is pushed upward by the force.

Therefore, the pushing up of the stamper roller 63 and the swinging motion toward the data stamp main body 9 are synchronized, and the copy paper 0 is clamped between them, and the stamp 20 of the data stamp main body 9 is pressed against the surface of the copy paper 0. , the required printing is performed on the surface of copy paper 0.

Then, when the swing axis 3 swings 160 to 165 degrees,
The rear part of the latch 37 is brought into contact with the roller 42 of the adjustment shaft 41, and the latch 37 is removed from the pin 35.
Since the transmission of rotational force from the pulley 33 to the swing shaft 3 is cut off, the coil spring 4 of the double-acting device 45
The spring force 9 causes the pivot shaft 3 to rotate in the opposite direction via the rotary coupling 47, and at the same time the data stamp body 9 is automatically returned to the position shown in FIG.

During this return operation, as the coil spring 49 whose winding radius has become smaller returns to its original state, its winding radius increases and the coil spring 49 is brought into pressure contact with the inner peripheral surface of the fixed coupling ring 46, and the frictional force acting therebetween causes the data to be printed. The stop shock when the main body part 9 stops returning is reliably buffered.

Although the present invention has been described above in detail with reference to the embodiments illustrated in the drawings, the present invention is not limited to such embodiments, and can be freely modified as necessary without departing from the spirit of the present invention. The design can be modified.

[Brief explanation of drawings]

FIG. 1 is a schematic front view illustrating an embodiment of the automatic printing device for a copying machine according to the present invention, FIG. 2 is a front view of the left side thereof, FIG. 3 is a right side view thereof, and FIG. 4 is the left side thereof. 5 is a side view of the data stamp main body, FIGS. 6 and 7 are sectional views taken along lines - and - in FIG. 5, and FIG. 8 is a side view of the endless belt. , FIG. 9 is a plan view of the main part, and FIGS. 10 and 11 are the - lines and
A sectional view taken along the line XI-XI, FIG. 12 is a partially cutaway perspective view of the clutch mechanism, and FIG. 13 is a perspective view of the disengaged portion of the clutch mechanism.
Fig. 14 is a perspective view illustrating the engagement relationship between the pin and latch of the clutch mechanism, Fig. 15 is a perspective view illustrating the reciprocating device of the data stamp main body, Fig. 16 is a longitudinal sectional front view thereof, and Fig. 17 The figure is a partially cutaway perspective view showing the stamper operating mechanism, and FIG. 18 is a side view of the main part thereof. 0...Copy paper, 1...Automatic printing device, 2...
Frame side plate, 3...Data stamp main body swing axis, 4
... Stamper cam shaft, 5 ... Support side plate, 6 ...
Copy paper flip-up prevention plate, 7... Guide edge portion, 8... Pivotal portion, 9... Data stamp main body portion, 10
... Coil spring, 11 ... Convex base, 12
...Mounting screw, 13...Portal case, 14...
Case side part, 15... Case top, 16... Opening, 17... Shaft, 18... Pulley, 19... Endless belt, 20... Stamp, 21... Partition plate, 22...
... Spring, 23 ... Ink supply roll, 24
... Drive shaft, 25 ... Pulley, 26 ... Belt, 27 ... Idler shaft, 28 ... Idler pulley, 29 ... Spring clutch, 30 ...
Latch, 31...Pulley, 32...Belt, 33
... Pulley, 34 ... Bearing, 35 ... Pin, 36 ... Clutch plate, 37 ... Latch, 38 ... Spring, 39 ... Support plate, 40
...adjustment plate, 41 ...adjustment shaft, 42 ...roller,
43... Arc groove, 44... Bolt, 45... Double acting device, 46... Fixed coupling, 47... Rotating coupling, 48... Screw, 49... Coil spring, 50... Stamper operation cam, 51...
... Link mechanism, 52 ... Roller, 53 ... Release lever, 54 ... Pin, 55 ... Main link, 56 ... Stopper, 57 ... Spring,
58... Support pin, 59... Rod, 60... Return spring, 61... Bell crank, 62
... Push-up cam, 63 ... Stamper roller, 6
4...Support lever, 65...Cam follower, 6
6...Switching data mark main body.

Claims (1)

[Claims] 1 Attach the data stamp main body with the stamp on the outside to a swing shaft that is intermittently connected to the drive shaft,
In an automatic printing device for a copying machine, which performs printing on the surface of a copy sheet by swinging the data stamp main body along the transport direction of the copy paper, and swinging the data stamp main body back again after printing is completed, the data stamp main body is A coil spring is brought into contact with the inner circumferential surface of a pair of couplings which are integrally fixed to the swing shaft integrated with the frame and the side plate of the frame, and both ends of the coil spring are attached to the respective couplings, and the data stamp main body is restored. The data stamp main body is characterized in that near the end of the swing, the coil spring is brought into pressure contact with the inner circumferential surface of a coupling fixed to the side plate of the frame to buffer the impact of stopping the back swing of the data stamp main body. Part reciprocating device.