JPS582621Y2 - Winding device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a printer winding device for winding up recording paper.

An object of the present invention is to provide a winding device that is easy to adjust and inexpensive.

Another object of the present invention is to provide a winding device that automatically winds recording paper when the paper is fed.

Still another object of the present invention is to provide a winding device that is extremely quiet since the paper feeding means and winding means do not operate except when paper is being fed.

Still another object of the present invention is to provide a winding device that constantly applies tension to the fed recording paper and prevents it from curling.

An example of a conventional printer winding device will be described with reference to FIG.

1. First, apply an electric signal to the plunger 1 to attract the plunger shaft 2 and engage the plunger shaft 2.
A winding lever 3 having a reverse stopper pawl γ is connected to a winding lever shaft 1.
It was swinging using 3 as a fulcrum.

When the take-up claw 5 is hooked to the take-up water wheel 8, the take-up water wheel 8 is rotated by the spring force of the take-up spring 4.

A winding gear 1 meshing with a transmission gear 9 fixed to a winding water wheel 8
The winding shaft 11 having a rotation angle of 0 was rotated to wind up the recording sheets 1 and 2.

In order to wind up the recording paper 12 in this way, an electric signal is applied to the plunger 1 and the plunger shaft 2 is sucked, but the noise generated when the plunger shaft 2 is sucked is quite large. Ta.

The amount of movement of the take-up claw 5 is limited by the suction stroke when the plunger shaft 2 is sucked into the plunger 1, so depending on the claw position of the one-winding water wheel 8, it is most suitable for the recording paper 12. Therefore, it was impossible to wind up the recording paper 12 neatly without causing blisters.

In the method of winding by driving a plunger, a considerable amount of current is required for the plunger, and the plunger shaft wears out after long periods of use, resulting in a lack of stability in operation. I needed it.

The present invention eliminates such drawbacks, and one embodiment of the present invention will be described with reference to FIG.

FIG. 2 is a mechanical diagram for explaining the operating principle of the present invention.

In Fig. 2, 20 is a drive cam, 21 is an electromagnet, 22
23 is a locking lever, 23 is a paper feed drive lever, 24 is a paper feed claw, 25 is a winding drive lever, 26 is a winding claw A, 27 is a winding driven lever, 28 is a winding claw B, 29, 30.3i ,3
4.35 is a spring member, 32 is a winding drive gear, 33 is a winding driven gear, and 36 is a paper feeding gear.

To explain the operating principle, the eccentric drive cam 20, which constantly rotates continuously, rotates only itself when the paper feed drive lever 23 is locked by the locking lever 22 and does not feed the paper, and provides power to others. Not yet.

When the electromagnet 21 is energized and the lock lever 22 is attracted when desired characters are printed and the recording paper 41 is to be fed line feed, the engagement with the paper feed drive lever 23 is released.

The paper feed drive lever 23 is rotated in the direction of arrow C by a spring member 29 when the drive cam 20 is rotated in the direction of arrow A from the maximum diameter (as shown) to the minimum diameter.

A paper feed pawl 24 pivotally supported by the paper feed drive lever 23 engages with a paper feed gear 36 to feed the paper when the paper feed drive lever 23 rotates in the direction of arrow C.

A portion 23-1 of the paper feed drive lever 23 and a portion 25-1 of the take-up drive lever 25 are always engaged, and the take-up drive occurs as the paper feed drive lever 23 rotates in the direction of arrow C. The lever 25 is rotated in the direction of arrow F by the spring member 30.

The take-up drive lever 25 is operated by a spring member 30 following the paper feed drive lever 23.

The take-up pawl A26, which is pivotally supported by the take-up drive lever 25, rotates the take-up drive gear 32 in the direction of the arrow (■) by the rotation of the take-up drive lever 25 in the direction of the arrow F.

Since the take-up driven gear 33 is always meshed with the take-up drive gear 32, it is rotated in the direction of arrow J and takes up the recording paper 41.

Rotate the take-up drive lever 25 in the direction of arrow F to release the take-up claw A26.
When the winding drive gear 32 and the winding driven gear 33 are rotated and finally fed, the winding drive lever 25 and the part 2T-1 of the winding driven lever 27 are engaged, and the winding driven lever 27 is moved in the direction of the arrow. Rotate in the G direction.

Since the winding pawl B28+2 is pivotally supported by the winding driven lever 27, it is rotated together with the winding driven lever 27 in the direction of arrow G about the shaft 40, and the winding drive gear 32 is rotated from the currently meshed teeth to the next one. The position of the teeth that can feed the paper moves according to the position.

The winding pawl A26 and the winding pawl 828 are always urged toward the winding drive gear 32 by spring members 34 and 35.

Even if the winding pawl 828 rotates in the direction of arrow G and moves to the next position of the teeth that can feed the paper, the winding drive lever 25 rotates in the direction of arrow F and the winding pawl A26 moves the paper. Drive gear 32
Since the recording paper 41 is urged in the direction of the arrow I by the spring member 30, there is no risk of the recording paper 41 being reversed.

When the maximum diameter is reached by the eccentric drive cam 20, the paper feed drive lever 23 is rotated about the shaft 38 in the direction of the arrow, against the spring member 29.

Since the paper feed drive lever 23 is rotated in the direction indicated by the arrow, the take-up drive lever 25 also rotates in the direction of the arrow E against the spring member 30, and rotates the take-up claw A26 in the same direction around the shaft 39. The winding pawl A26 is advanced to the tooth section of the first winding drive gear 32 at the next position where the paper can be fed.

The take-up driven lever 21 is disengaged from the take-up drive lever 25 and is rotated in the direction of arrow H by the spring member 31.

A take-up pawl 828 pivotally supported by the take-up driven lever 27 rotates the take-up drive gear 32 in the I direction and rotates the take-up driven gear 33.
is rotated in the direction of arrow J to wind up the recording paper 41.

Since the winding claw A26 and the winding claw 828 alternately wind the paper and prevent the paper from reversing, tension is always applied to the recording paper and the recording paper does not curl up or bulge.

When the paper feed drive lever 23 reaches the peak of the maximum diameter of the drive cam 20, it engages with the locking lever 22, and even if the drive cam 20 rotates, the paper feed drive lever 23 does not rotate and remains in a standby state. .

Thereafter, a series of recording sheets are wound up by the same operation.

As described above, according to the present invention, by energizing the electromagnet, the locking lever and the paper feed drive lever are disengaged, so that the paper can be fed and simultaneously automatically wound.

Also, the winding claw is always A. Since B is meshed with the take-up drive gear, there is no need for a reverse stopper, which was required in the past, and tension is applied to the recording paper in the casing, so the recording paper does not roll or bulge.
A highly reliable winding device can be provided.

This makes the initial purpose a distant relative, and the effect is very large.

[Brief explanation of drawings]

FIG. 1 is a mechanical diagram of a conventional winding device. 1...Plunger, 2...Plunger shaft, 3...Take-up lever, 4...Take-up spring, 5... Winding increase claw, 614... Spring member, 7... Reverse stop claw, 8... Winding water increasing wheel, 9... Transmission gear, 10... ... Winding gear, 11... Winding shaft, 12... Recording paper, 13... Winding lever shaft. FIG. 2 is a mechanical diagram of a winding device showing an embodiment of the present invention. 20... Drive cam, 21... Electromagnet,
22...Latching lever, 23...Paper feed drive lever, 24...Paper feed claw, 25...
...Take-up drive lever, 26...Take-up claw A, 27
...... Winding driven lever, 28... Winding increase pawl B, 29.30.31.34.35... Spring,
32... Winding drive gear, 33... Winding driven gear, 36... Paper feed gear, 37 38
39 40...9 9 ν...shaft, 41...recording paper.

Claims (1)

[Claims for Utility Model Registration] 1. An eccentric drive cam that rotates continuously, a paper feed gear for intermittently feeding recording paper, and a winding gear for winding up the fed recording paper; a paper feed drive lever that engages with the drive cam and rotates back and forth from a standby position to an operating position and from the actuation position to the standby position; a paper feed pawl that engages with a paper feed gear to rotate the paper feed gear by a predetermined amount; a lock lever that locks the paper feed drive lever in the standby position; the lock lever and the paper feed drive lever; An electromagnet is attached to one end of the electromagnet that disengages the lock from the paper feed drive lever to activate the paper feed drive lever, and a first winding pawl is attached to one end of the electromagnet, the other end of which engages with a portion of the paper feed drive lever and operates the paper feed drive lever. a take-up drive lever that winds up the take-up gear with the first take-up pawl during the forward movement of the paper feed drive lever, and winds up the first take-up pawl when the paper feed drive lever moves back; The second winding claw is installed by engaging the winding drive lever during the forward movement of the paper feed drive lever to wind up the second winding claw;
A device 2 comprising a take-up driven lever that winds up the take-up gear with the second take-up pawl during the backward movement of the paper feed drive lever; the first take-up pawl and the second take-up pawl; 2. The winding device according to claim 1, wherein the winding device alternately winds up the recording paper with the claws to constantly apply tension to the recording paper.