JPS5932889Y2 - Recording paper feeding and storage device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a recording paper feeding and storing device in a recorder.

This type of device generally performs the recording operation while transferring the recording paper from the feeding sprocket side to the storage sprocket side, but during this recording operation, the recording paper is kept under tension to maintain a stable state. Because it is necessary to run the vehicle, the drive motor is used to interlock and drive the delivery sprocket and storage sprocket with a relatively large torque.

For this reason, there is no problem with the above recording operation, but it is difficult to quickly perform the fine adjustment operation of setting the recording paper and fine-tuning the time line, and the reverse operation of feeding the recording paper backwards as necessary. There is also a risk that excessive tension may be applied to the paper and the recording paper may be damaged.

In view of the above points, the present invention is designed to perform the above-mentioned recording operation in a stable state, and to perform both the above-mentioned fine adjustment operation and reverse operation quickly and at high speed without applying unreasonable tension to the recording paper. It is an object of the present invention to provide a recording paper feeding and storing device.

Next, an embodiment of the apparatus according to the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes an analog recorder to which a device according to the present invention is attached, and this recorder 1 is of a so-called flatbed type in which a recording paper after recording has a horizontal running guide plate 2.

However, at the rear end position on the traveling guide plate 2,
A scale plate 3 provided in a direction perpendicular to the running direction of the running paper
An ink cartridge 4 is attached to the ink cartridge 4, which is moved along the scale plate 3 according to the input value, and furthermore, recording paper feeding sprockets 5, 5 are provided on both left and right sides of the rear portion of the traveling guide plate 2. At the front of the traveling guide plate 2, there are provided a storage roller 7 for feeding the recording paper into the storage section 6 and a pressing roller 8 for pressing the recording paper against the storage roller 7.

As shown in FIG. 2, the feeding sprocket 5 is coaxially integrated with a sprocket gear 10 provided outside the side frame 9 of the recorder 1.
is interlocked with the motor gear 11 of the drive motor M by a drive-side gear transmission mechanism via the transmission gear 12 and the slide gear S, and furthermore, this sprocket gear 10 is connected to the roller gear 14 and the -transmission gears W1 to W4. The roller gears 14 are coaxially connected with the storage roller 7 and the side frame 9 by a drive-side gear transmission mechanism via a one-way clutch C.

As shown in FIGS. 3 and 4, the one-way clutch C has two gears 15 and 16 with the same diameter, and a ratchet 17 is formed on each side wall of the gears 15 and 16. The gears 15 and 16 are loosely fitted onto the shaft 18 so that their ratchets 17 engage with each other.

Furthermore, the overlapping gears 15 and 16 are urged by a spring 19 and a presser plate 120 in a direction in which the respective ratchets engage with each other.

On the other hand, as shown in FIG. 5, the slide gear S is pivotally supported by a gear shaft 21, and this gear shaft 21 extends through the side frame 9 to the other side frame 22.
Furthermore, it passes through the side frame 22, and a presser ring 23 is fixed to the end thereof.

Further, a coil spring 24 is inserted between the holding ring 23 and the side frame 22, and this spring 24 causes the gear shaft 21 and the slide gear S to move to the right in the figure, that is, the slide gear S It is biased in the direction of engagement with gears 10°12.

Also, an operating lever 2 for inserting and operating the gear shaft 21 is provided.
5 is attached to the side frame 22, and this operating lever 25 is a substantially J-shaped plate body, and is pivoted to a fulcrum shaft 26 at a substantially middle position.

The upper end of this operating lever 25 is protruded to the outside of the recorder 1 for operation m25a, and the protruding tongue piece at the lower part 525b is used as a pressing plate 27, and this suppressing plate 27 is bent loosely outward. ing.

When the above-mentioned recorder is operated, the drive motor M first transmits the drive to the motor gear 11, and from the motor gear 11, the drive is transmitted via the transmission gear 12 and the slide gear S to the sprocket gear 10, and the sprocket 5 rotates. The recording paper is fed out one by one.

Further, from the sprocket gear 10 to the transmission gears W1 to W
4 and the one-way clutch C to the roller gear 14, the storage roller 7 is rotated, and the recording sheets are sequentially stored in the storage section 6.

At this time, since the circumference of the storing roller 7 side is faster than that of the feeding sprocket 5 side, the recording paper remains in a tensioned state on the running guide plate 2.

In the above normal driving condition, one-way clutch C
The gears 15 and 16 are rotated together by the ratchet 17, but when the motor M is rotated in the opposite direction to the above, that is, when the recording paper is reversely fed, the ratchet 17 is disengaged, no drive is transmitted from the sprocket 5 to the roller 7, and the roller 7 becomes free.

Therefore, the recording paper is reversely fed by the sprocket 5, and the tensile force of the recording paper causes the roller 7 to rotate, so that the recording paper moves on the traveling guide plate 2 with an appropriate tensile force applied. I will do it.

Also, when setting the recording paper or aligning the time line, the operation portion 25a of the operation lever 25 is pressed and the operation lever 25a is pressed.
5 around the fulcrum shaft 26, the operating lever 25
A gear shaft 21 guided by a pressing plate 27 is attached to the lower end 25b of the
The tip of the slide gear S runs against the spring 24, and the slide gear S is moved against the spring 24.

In this way, the sliding gear S is disengaged from the adjacent gears 10 and 12, and the sprocket 5 becomes free with respect to the motor M.

Therefore, the sprocket 5 can be easily rotated manually, and recording sheets can be set and time lines can be easily set.

As explained above, according to the present invention, during the recording operation of the recording paper, the feeding sprocket 5 and the storage roller 7 are driven in conjunction with each other by the drive motor M via the drive side and driven side gear transmission mechanisms, so that the recording paper is strong. It is fed stably and in a tensioned state by torque, and during fine adjustment operations such as time line alignment that slightly move the recording paper forward and backward, it is moved and stored with the feeding sprocket 5 by moving the slide gear S in the drive side gear transmission mechanism. With both rollers 7 free from the drive side, the recording paper can be adjusted forward or backward by hand.Furthermore, when the recording paper is reversed to confirm recording, etc., the one-way clutch C section in the driven side gear transmission mechanism is used. When the power from the drive morph M is interrupted, the storage roller 7 becomes free, and the recording paper can be transported in reverse at high speed without applying unnecessary tension to the recording paper, and the three operations of the above-mentioned recording operation, fine adjustment operation, and reverse operation can be carried out. Both have the effect of allowing each operation to be performed in an optimal state depending on the purpose of the operation.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view of a recorder to which a device according to the present invention is attached, FIG. 2 is a diagram showing an embodiment of the single drive mechanism according to the present invention, and FIG. 3 is a plan view of a one-way clutch.
4 is a plan view of the same, FIGS. 5A and 5B are explanatory views of the mechanism and operation of the slide gear according to the present invention, and FIG. 6 is a front view of the operating lever. M... Drive morph, 5... Sprocket, 7... Storage roller, io, il, 12...
... Gears constituting the drive side gear transmission mechanism, S...
...Slide gear, W1 to W4.14...Gear forming the driven side gear transmission mechanism, C...One-way clutch.

Claims (1)

[Scope of utility model registration request] A driving side gear transmission mechanism that interlocks and connects a drive motor and a recording paper feeding sprocket, and a driven side gear transmission mechanism that interlocks and connects the feeding sprocket and a recording paper storage roller, A slide gear that is movable in the axial direction and can be freely engaged and disengaged from the drive side gear transmission mechanism is interposed in a part of the drive side gear transmission mechanism, and a part of the driven side gear transmission mechanism is provided. consists of two gears connected by ratchets arranged oppositely and formed on opposing surfaces, one of the two gears meshing with the gear on the storage roller side, and the other gear on the feeding sprocket side. A one-way clutch is interposed in mesh with the one-way clutch, and when the recording paper is forwardly transferred from the feeding sprocket side to the storage roller side, the ratchet is engaged and the driven side gear transmission mechanism is interlocked to move the recording paper. 1. A recording paper feeding and storing device characterized in that, when the recording paper is transferred in a reverse direction, the ratchet slips to release the interlocking of the driven side gear transmission mechanism.