JPH058524A - Tape winding device - Google Patents

Abstract

(57) [Abstract] [Object] The present invention relates to a tape winding device that stabilizes tape running and stabilizes winding of a tape. [Structure] A tape cassette 4 is mounted on a winding and supply reel 31, 32 of a tape winding device for running and winding a tape.
By inserting the spools 42 and 41 of 0, the ribs 48 of the reels 31 and 32 and the locking claws 46 of the spools 42 and 41 are locked, and the rotation on the take-up reel 31 side is transmitted to the take-up spool 42. The tape 47 is wound up. In the tape winding device thus configured, the rib 48 of the take-up reel 31 is engaged with the locking claw 46 of the take-up spool 42 so as to restrict the vertical movement of the take-up spool 42 and maintain that state. It is a tape winding device formed by forming 49. [Effect] Since the vertical movement of the take-up spool is restricted, the take-up operation becomes stable as the tape runs.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding device for magnetic recording magnetic tapes, printing ribbon tapes and other tapes.

[0002]

2. Description of the Related Art A tape for magnetic recording, a ribbon tape for printing, and the like are wound around two spools rotatably held in a cassette case with each tape end fixed to each spool. By rotating the spool, the other spool-wound tape is supplied and wound around the rotated spool side.

For example, FIG. 5 shows a cassette body such as a magnetic or ribbon tape. In the figure, in a cassette case 40, for example, a ribbon tape supply spool 41 around which a transfer ribbon tape 47 is wound is rotatably supported, and a ribbon take-up spool 42 is rotatably supported. The transfer ribbon tape 47 wound around the ribbon supply spool 41 is led out from the supply spool 41, passes through the three guide pins 44A, and passes through the notch 45 into which the thermal head and the guide member are inserted. Book guide pin 44
The winding spool 42 is wound through B. Therefore, by rotating the take-up spool 42 counterclockwise, the transfer ribbon 47 is pulled out from the supply spool 41 to the cutout portion 45, that is, the recording portion.

The take-up spool 42 and the supply spool 4
1 is a take-up reel 31 and a supply reel 3 as shown in FIG.
2 and the take-up reel 31 is driven to rotate the take-up spool 42.

[0005]

As shown in FIG. 6, the take-up spool 42 and the like are provided with a plurality of locking claws 46 at equal intervals on the inner surface of the cylinder so that the take-up reel 31 can be engaged and rotated. Ribs 48 are provided at equal intervals on the take-up reel 31 so as to engage with the locking tabs 46.

However, the spools 41, 42, etc.
Since it is rotatably held in the cassette case 40 and rotatably held with some play, it moves in the vertical direction. As a result, the take-up spool 42 moves up and down when the tape is taken up, making the tape take-up unstable and causing the tape to run poorly. The winding state becomes unstable up and down as shown in FIG. 7 (b). In addition, it is possible that normal recording may not be performed because the tape vibrates due to vertical movement during running.

The present invention provides a winding device capable of favorably winding a tape by regulating the vertical movement of a spool for winding the tape in order to stabilize the running of the tape.

[0008]

According to the tape winding device of the present invention, the rib 48 of the take-up reel 31 as shown in FIG.
In addition, the concave portion 49 is formed corresponding to the locking claw 46 of the take-up spool 42 which is inserted into the take-up reel 31.

Further, according to the present invention, a recess is also formed in the rib on the supply reel 41 side.

[0010]

In the tape winding device of the present invention, when the winding reel 31 is rotated, the inserted winding spool 42 is rotated, and the tape can be drawn out from the supply spool 41 side and run. To wind up. At this time, take-up spool 4
The second locking claw 46 locks in the recess of the rib 48 of the take-up reel 31 and maintains the position there. Therefore, the vertical movement of the take-up spool 42 is restricted, and the tape take-up operation is stabilized.

Similarly, a recess corresponding to the locking claw is formed on the supply reel 41 side so that the supply spool 42
The vertical movement of is also restricted. Therefore, tape running becomes more stable.

[0012]

1 (a) and 1 (b) are perspective views showing a take-up reel and a spool which are essential parts of a tape take-up device according to the present invention, and FIG. 3 is an example of a tape cassette according to the present invention. It is a perspective view shown.

The tape cassette accommodates a ribbon tape in a thermal printer, for example. The tape cassette is mounted on the carriage 30 of the printer shown in FIG. 4, and the tape is wound according to the traveling of the carriage. FIG. 5 is a perspective view showing an example of a tape winding mechanism.

First, in FIG. 4, 10 is a chassis and 14
Is a platen, 20 is a feed motor, 30 is a carriage, 3
2 is a ribbon supply reel which is a paper feeding means of a thermal transfer ribbon tape, 31 is a ribbon take-up reel which is a ribbon take-up means, 35 is a thermal head, 37 is a ribbon end sensor made of a photoelectric element, 38 is a cassette mounting detection 5 is an operation lever, 39 is a carriage cover, and 70 shown in FIG. 5 is a cassette mounting sensor composed of a micro switch that responds to the operation lever.

The chassis 10 is composed of a seat plate 9, side plates 11 and 12 standing upright on both sides of the seat plate 9, and a front plate 13. The side plates 11 and 12 are formed so that the latter half of the side plate is higher than the first half of the side plate. is doing. Ends of a pair of guide shafts 16 and 17 that rotatably support the platen shaft 15 of the platen 14 on the rear side portions of the side plates 11 and 12 and guide the traveling of the carriage 30 to the front side portions of the side plates 11 and 12. The parts are fixed, and the guide shafts 16 and 17 are mounted in parallel in the front-rear direction. Further, the lower paper guide plate 18 is supported by the side plates 11 and 12 from below the platen 14 to the rear at a predetermined interval, and behind the guide plate 18 is the paper feed motor 20 including a stepping motor. Is attached to the side plate 11, and the motor gear 21 attached to the rotary shaft of the motor 20 is projected to the outside of the side plate 11 to
It is engaged with the idler gear 22 in a row configuration. The other gear (not shown) of the idler gear 22 is connected to the platen shaft 1
5, the platen 14 is rotated by the rotation of the sheet feeding motor 20 so that the recording sheet (not shown) is fed in the vertical direction.

Between the guide shafts 16 and 17,
In parallel with these, a timing belt 28 is provided by being stretched around pulleys 24 and 25 mounted on a seat plate 9 of the chassis 10, and both ends of the timing belt 28 are arranged on a carriage 30
It is fixed to. The one pulley 25 is integrally formed with an idler gear 26, and the idler gear 26 is engaged with a motor gear 27 attached to a rotary shaft of a carriage motor which is a stepping motor installed in the chassis 10. Therefore, the idler gear 26 and the pulley 25 are rotated by the rotation of the carriage motor to move the timing belt 28, and the carriage 30 is reciprocated along the guide shafts 16 and 17 in accordance with the movement of the timing belt 28. In the figure, recording is performed on a recording sheet when moving to the right.

A ribbon supply reel 32 and a ribbon take-up reel 31 project from a gear box of the carriage 30 on a cover 39 which covers the upper surface of the carriage 30 which is a flat box having an upper opening. A paper guide plate 36 is projected on the rear surface of the cover 39, and the guide plate 36 is attached to the platen 1.
4 is formed in an arc shape having a concentric circumferential surface.
A cassette 40 of the transfer ribbon tape shown in FIG. 4 is mounted on the cover 39, and guide members 33, 34 for mounting the cassette 40 are provided at the center of the front and rear of the cover 39 to guide the front guide. The member 33 is formed of a leaf spring.
Further, a ribbon end sensor 37 formed of an optical element is provided on the cover 39 so as to be projected into the ribbon cassette 40 to be mounted, and for example, the transparency of the ribbon end is used for detection. . Further, on the cover 39, the operation lever 38 of the cassette attachment sensor 70 installed in the gear box is projected from below, and the operation lever 38 comes into contact with the side plate of the cassette 40 attached to operate to detect attachment. When it does not work, it detects that it is not mounted.

A thermal head 35 shown in FIG. 5 is attached to the carriage 30. That is, the thermal head 3
5 head support plate 67 through the shaft to the carriage 3
No. 0, the shaft is rotatable about a fulcrum, and a spring is stretched between the support plate 67 and the carriage 30 so that the support plate 67 moves in the direction of the arrow in the figure, that is, in the direction in which the thermal head 35 moves away from the platen 14 ( Always urge in the direction of departure. An L-shaped head slider 66 is fixed to the support plate 67, and the head slider 66 is moved up and down by a drive unit 61 which is a thermal head press-contacting / separating mechanism, which will be described later, installed in the carriage 30. The plate 35 is completely pressed against the platen 14 and separated from the platen 14 at the lowermost part.

In a transfer ribbon cassette 40 mounted on the carriage cover 39, a transfer ribbon tape 47 is wound and a ribbon supply spool 41 engaged with the ribbon supply reel 32 is rotatably supported, and the ribbon is supplied. Ribbon take-up spool 42 engaged with the take-up reel 31
Is rotatably supported. Ribbon supply spool 4
The transfer ribbon 47 wound around the No. 1 is the supply spool 41.
The notch 4 into which the thermal head 35 and the guide member 34 are inserted and inserted through the three guide pins 44A.
5, and is wound around the take-up spool 42 via the three guide pins 44B. Therefore, by rotating the take-up spool 42 counterclockwise by the rotation of the ribbon take-up reel 31, the transfer ribbon 47 is pulled out from the supply spool 41 to the notch portion 45, that is, the recording portion. The bottom plate of the cassette 40 has a hole 4
3, the ribbon end sensor 37 is provided through the hole 43.
Is inserted in the cassette 40.

A supply reel unit 50 and a take-up reel unit 56 are provided in the carriage 30, and the thermal head 3 is provided between the reel units 50 and 56.
A drive unit 61, which is a mechanism for pressing and separating the plate 5 from the platen 14, is provided.

The supply reel unit 50 comprises a reel shaft 51 and clutch plates 52 and 53 springs 55 that sandwich the felt member 54.
The supply reel 32 is formed by extending the upper part of
The supply reel 32, the reel shaft 51, and the clutch plate 53 are integrally formed, and are rotatably supported by an inner shaft (not shown) provided upright from the bottom plate of the carriage 30. The other clutch plate 52 is pressed against the clutch plate 53 by a spring 55 and is fixed so as not to rotate to form a tension mechanism for the reel 32. Therefore, the supply spool 41 of the cassette 40 is rotated by overcoming the frictional force of the felt member 54 when the transfer ribbon 47 is pulled out. Further, the friction of the felt member 54 prevents the excessive transfer ribbon 47 from being supplied due to inertial rotation. The ribbon take-up reel 31 also has the same structure as the supply reel 32, except that the take-up gear 57 is used instead of the clutch plate 52. The winding gear 57 is an idler gear (not shown in the drawing, and is located behind the winding gear 57).
Motor gear 6 attached to the rotary shaft of a winding motor including a stepping motor mounted on the carriage 30 via
0 is engaged. Therefore, when the winding motor rotates clockwise, the winding gear 57 rotates in the direction of the arrow in the drawing, the ribbon winding spool 42 rotates counterclockwise via the winding reel 31, and the winding winds. The spool 42 is driven in synchronization with a carriage motor that moves the carriage 30.

The rotation of the winding gear 57 is caused by the transfer ribbon 47.
Has a torque larger than the adhesive force for adhering to the paper for recording, and prevents the ribbon 47 from being peeled off and loosened. Further, the rotation amount of the winding gear 57 is set to be larger than the rotation amount of the carriage motor, that is, the movement amount of the carriage 30. Transfer ribbon tape 47
Although the winding of the winding head is suppressed by the pressure contact of the thermal head 35 with the platen 14, the winding motor has a larger rotation amount than the carriage motor, so that the friction force of the felt member of the winding reel unit 56 is overcome. The take gear 57 idles. Therefore, the frictional force of the felt member must be set to be larger than the adhesion of the transfer ribbon and smaller than the pressure contact force of the thermal head 35 so that the transfer ribbon 47 does not unnecessarily slip on the recording paper.

In the drive unit 61 for pressing the thermal head 35 into and out of contact with the platen 14, the cam gear 62 is rotatably supported on the carriage bottom plate, and the gear is formed on the peripheral surface of the cam gear and the upper surface of the cam gear is formed on the upper surface. Cylindrical cam 63
Is formed. The gear of the cam gear 62 is engaged with a motor gear 65 provided on a rotary shaft of a head operating motor, which is a stepping motor attached to the bottom of the carriage 30, via an idler gear 64. The tip of a head slider 66 integral with the thermal head 35 is pressed against the cam lobe of the cylindrical cam 63, and the cam lobe gradually rises to form a sharp notch following the highest position.
Due to the rotation of the cam gear 62, the thermal head 35 comes into pressure contact with the platen 14 when the head slider 66 is located at the uppermost portion of the cam lobe, and the thermal head 35 is moved from the platen 14 when the head slider 66 is located at the lowermost portion (cam gear plane). I'm trying to leave. Moreover, as described above, the thermal head 35 is urged by the spring 69 so as to be separated from the platen 14. With this configuration, the head operating motor is rotated during recording to press the thermal head 35 against the platen 14, and the head operating motor is further rotated during non-recording such as returning or space. As a result, the thermal head 35 is rapidly separated from the platen 14, and the carriage 30 is moved while maintaining this state.

A cassette mounting sensor 70, which is a micro switch for detecting the mounting of the transfer ribbon cassette 40, is installed in the carriage 30, and the operating lever 38 thereof is projected onto the carriage cover 39 as described above. . The operation of the cassette mounting sensor 70 switches between recording control using the thermal head transfer ribbon and recording control using thermal paper, and the drive of the winding motor is stopped when the cassette 40 is not mounted. I have to.

As described above, the ribbon cassette 40 is attached, and the ribbon tape 47 is drawn out and wound at the same time according to recording. In this device, the tape take-up reel 31 is
When the locking claws 46 of the take-up spool 42 and the ribs 48 are engaged by mounting the tape cassette 40, the rotation is transmitted to the take-up spool 42. In this case, recesses 49 for restricting the running of the tape and the vertical movement of the take-up spool 42 and maintaining this state are formed in each rib 48 in correspondence with the locking claws 46. The shape of the recess 49 is shown in FIG.
It may be formed in a V-groove shape as shown in (a) or may be formed in a U-groove shape as shown in FIG. 1 (b). The recess 49 is provided with a locking claw 46 of the take-up spool 42 when the take-up reel 31 rotates.
It is formed on the rib 48 side that locks with.

Therefore, the tape cassette 40 is wound on the carriage 30 and spooled on the supply reels 31 and 32 by the spool 4.
Attach so that 2 and 41 are inserted. When the recording operation is started in this state, the carriage 30 travels along the slide shafts 16 and 17 as described above, and the ribbon tape 47 is wound around the take-up spool 42 in response to this.
That is, the locking claw 46 of the take-up spool 42 is shown in FIG.
And, as shown in (b), the concave portion 49 is fitted and engaged, and the take-up spool 42 rotates in accordance with the rotation of the take-up reel 31. At this time, the take-up spool 42 is kept fitted in the recess 49 of the rib 48 of the take-up reel 31,
The movement of the tape 47 is restricted in the vertical direction, and the tape 47 is wound in a stable state, so that the tape running is very stable. As shown in the winding state in FIG. 7A, very stable winding can be performed without waviness and winding as in the conventional case.

Although the recess 49 is provided on the rib on the take-up reel side, if the recess is formed on the rib on the supply reel 32 side, the vertical movement on the supply spool 41 side is restricted. The running of the tape 47 is more stable, and at the same time the winding is stable.

In particular, according to this embodiment, the ribbon tape in the thermal printer has been described as the tape cassette.
Naturally, it can be applied to a magnetic tape for magnetic recording. In the case of this magnetic tape, unlike the above-mentioned ribbon tape, not only can it run in only one direction, but the tape can also be run in the reverse direction, that is, rewinding, and the reverse rotation force is applied to the supply reel side. Is transmitted via the supply reel 32,
The tape can be rewound. Therefore, in order to stably run the tape in either direction, it is necessary to form a recess in each rib on the winding and supply (rewinding) reel side. In this case, since the ribs on the supply reel side and the locking claws on the supply spool are opposite to each other, it is necessary to form a recess in the rib on the locking side.

Further, the locking claws 46 of the take-up and supply spools 42, 41 are not limited to the columnar shape, but may be, for example, as shown in FIG.
In the case of the shape as shown in (c) or the prismatic shape, it is preferable to form the concave portion in the rib so that the claw 46 can be engaged according to each shape. Moreover, the recess may be formed on all the ribs, but even if it is formed on at least one rib, the vertical movement of the spool can be sufficiently regulated, and may be set as necessary.

[0030]

According to the tape winding device of the present invention, since the vertical movement of the spool for winding the tape in the tape cassette is restricted, the tape can be stably run with a very simple structure. .

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a main part of a winding device according to the present invention, in which (a) is one embodiment and (b) is another embodiment.

FIG. 2 is a diagram for explaining the operation of the present invention, in which FIG.
Is an operation explanatory diagram of one embodiment, (b) is another embodiment, and (c) is an operation explanatory diagram of yet another embodiment.

FIG. 3 is a perspective view showing a specific example of a tape cassette.

FIG. 4 is a perspective view showing an example of a tape winding mechanism.

FIG. 5 is a perspective view showing the configuration of a thermal printer using the ribbon tape cassette according to the present invention.

FIG. 6 is a view showing an engagement state of a conventional take-up reel and a tape take-up spool, in which (a) is a top view (b).
Is a perspective view

FIG. 7 is a diagram showing an example of a tape winding state,
(A) is a figure which shows the winding example in this invention, (b) is a figure which shows the conventional winding example

[Explanation of symbols]

31 winding reel 32 supply reels 40 tape cassette 41 Supply spool 42 take-up spool 46 Locking claw 47 ribbon tape 48 ribs 49 recess

Claims (2)

[Claims] 1. A tape cassette having a take-up spool and a supply spool engageable with the take-up reel and the supply reel is mounted, and the tape is wound on the take-up spool by rotating the take-up reel. In the tape winding device, a recess formed to engage with the locking claw is formed in a rib formed on the take-up reel side corresponding to the locking claw formed on the winding spool. Tape winding device. 2. The tape winding device according to claim 1, wherein the recess is also formed in a rib on the supply reel side.