JPS63188853A - Loading device for tape-like body - Google Patents

Abstract

PURPOSE:To securely guide a tape to its travel course and hence to enable the recording and reproducing with high accuracy by composing a common guide for guiding the tape in such freely reciprocating positions as a guide position for the tape together with air in a loading passage and a deviate position from it. CONSTITUTION:The tip of a magnetic tape together with a jet of air from an air discharge outlet 29e are securely guided by the common guide 54 to an entrance 9f, and on completion of loading, a start button is pressed so that both of sliders 40a and 40b are moved to be pressed against a stopper 42 by turning a drive arm 50 to the right and also arms 44a and 44b to the left. Thus outlet and inlet guides 18 and 19 are also moved to their loading positions. Then, the guide 54 is turned to the left to be deviated from the passage prior to a slider 40a by turning the arm 44a to the left. Consequently, the tape is accurately guided by the common guide 54 to its travel course to enable the recording and reproducing with high accuracy.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a tape-shaped body loading device that is most suitable for application to, for example, an oven-reel type magnetic recording and reproducing device, and is particularly applicable to tapes, films, etc. The present invention relates to a device in which a tape-like body is transported by air along a duct-like loading path.

[Summary of the invention]

In this invention, a tape-like object such as a tape or a film, which is fed out from a supply reel, is moved toward a take-up reel along a duct-like loading path having a drum outer circumferential path formed along the circumferential surface of a guide drum. In a tape-shaped body loading device configured to be transported by air to the drum, a movable dual-purpose guide is provided that guides the tape-shaped body along with air toward the entrance of the drum outer circumferential passage, allowing smooth loading of the soft tape body. It was designed so that it could be done.

[Conventional technology]

Conventionally, in an oven-reel type magnetic recording and reproducing device, a duct has a starting end disposed on the supply reel side, a terminal end disposed on the take-up reel side, and a drum outer circumferential passage formed along the circumferential surface of the guide drum. The magnetic tape is provided with a loading path shaped like the above, a plurality of air discharge ports provided along the loading path, and a blower that discharges air from the air discharge ports into the loading path, and the magnetic tape is discharged in one volume from a supply reel. There is a loading device that is configured to transfer and load the liquid from the starting end to the terminal end along the loading passage using air discharged from an air discharge port.

[Problems to be Solved by the Invention] However, in this type of conventional loading device, the magnetic tape tends to become unexpectedly clogged at the entrance portion of the drum outer circumferential passage.

That is, a movable entrance/exit guide is provided at the entrance/exit of the drum outer circumferential passage to allow the magnetic tape to be wound around the circumferential surface of the guide drum in a helical manner and run. No guide for air or magnetic tape can be provided at the entrance/exit of the drum outer circumferential passage, and the entrance/exit portion is wide open.

For this reason, the leading edge of the magnetic tape that has been transported by air from the starting end of the loading passage toward the entrance of the drum outer circumferential passage is easily clogged unexpectedly at the wide open entrance as described above, and the magnetic tape It was difficult to load smoothly.

This invention was made to solve these problems, and it does not interfere with the movement of the entry/exit log guide.
Moreover, it is an object of the present invention to provide a tape-shaped body loading device that is provided with a movable dual-purpose guide that guides the tape-shaped body together with air toward the entrance of the drum outer circumferential passage.

[Means for solving problems]

In the above-described loading device for a tape-like body, the present invention provides a dual-purpose guide for guiding the tape-like body together with air toward the entrance of the drum outer circumferential passage, and the dual-purpose guide guides the tape-like body along with the air in the loading passage. The guide is configured to be able to reciprocate between an operating position for guiding the tape-shaped body and a non-operating position that is evacuated from the operating position, and when loading the tape-shaped body, the dual-purpose guide is reciprocated to the operating position, and The dual-purpose guide is configured to be moved back to a non-operating position when recording or reproducing the tape-shaped body.

[Effect]

According to the tape-shaped body loading device of the present invention, since a dual-purpose guide is provided that guides the tape-shaped body together with air toward the entrance of the drum outer circumferential passage, the inside of the loading passage is moved from the starting end side to the entrance of the drum outer circumferential passage. The leading end of the tape-shaped body that has been transported by air towards the drum can be guided extremely reliably by the dual-purpose guide, and can be guided extremely reliably to the entrance of the drum outer circumferential passage. Moreover,
The dual-purpose guide is movable, and when recording or reproducing the tape-shaped body after loading the tape-shaped body, the dual-purpose guide is evacuated from the loading path, so the entry/exit log guide that is movable during the recording or reproduction of the tape-shaped body The dual-purpose guide does not interfere with the movement of the robot in any way.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a magnetic tape loading device in which the present invention is applied to a reel-to-reel type video table recorder will be described below with reference to the drawings.

First, as shown in Figures 3 and 4, a vertical video tape recorder body (hereinafter simply referred to as a VTR body)1
A supply reel stand 2 and a take-up reel stand 3 are arranged at a distance from each other on the upper left and right sides of the front surface 1a. A supply reel 5 on which a tape-shaped magnetic tape 4 is wound and a take-up reel 6 for winding the magnetic tape 4 are attached to the supply reel stand 2 and the take-up reel stand 3. ing. Further, a rotary head drum 7 serving as a guide drum is arranged at a position close to the lower part of the supply reel 5 on the front surface 1a of the VTR main body 1.

Next, a loading passage 9 is arranged on the front surface 1a of the VTR main body 1 at a position close to the lower side of both reels 5.6. This loading passage 9 has a starting end 9a disposed close to the lower part of the supply reel 5, and a terminal end 9b thereof for winding.
The rotary head drum 7 has a drum outer circumferential passage 9C which is disposed below the drum 6 at a predetermined interval and extends horizontally along the circumferential surface 7a of the rotary head drum 7 and is approximately U-shaped. In addition, starting end 9a
and the inlet 9f of the drum outer circumferential passage 9C.
d is horizontally formed in a substantially inverted U-shape, and the winding side passage 9e between the terminal end 9b and the outlet 9g of the drum outer circumferential passage 9d is formed so as to gradually rise toward the terminal end 9b. There is. Therefore, this loading passage is curved in a zigzag shape, drawing a gentle curve as a whole. The loading passage 9 includes a front panel 10 attached to the front surface 1a of the VTR main body 1, and a front cover 11 that can be opened and closed and fitted to the front surface of the front panel 10.
It is formed into a duct shape.

The front cover 11 is molded from transparent synthetic resin, etc., and is rotatably attached to the VTR body 1 by a hinge 12, and the locking means ( (not shown). Note that in order to wind the magnetic tape 4 around the circumferential surface 7a of the rotary head drum 7 in a helical manner,
The loading passage 9 is gently sloped so that the starting end 9a side is low and the terminal end 9b side is high.In accordance with this, a step is provided so that the supply reel 5 is low and the take-up reel 6 is high. .

Next, along the supply side passage 9d of the loading passage 9,
A guide post 14, a tension detector 15, a guide roller 16, a middle eraser rad 17, an entrance guide 18, etc. are arranged, and an exit guide 19 is arranged along the winding side passage 9e.
, a tape guide 20, an impedance roller 21, an audio erasing head 22, an audio recording/reproducing head 23, an audio monitor head 24, a capstan 25, a pinch roller 26, a guide roller 27, and other tape guides and heads are arranged. .

Next, a plurality of air discharge ports 2 are provided along the loading passage 9.
9a to 29e are provided, and a plurality of air discharge passages 323 to 32e of one or more blowers 30.31 are connected to air discharge ports 293 to 29e. Note that the air suction port 33 of one of the blowers 31 is connected to a large number of air suction ports (not shown) provided on the circumferential surface of the hub 6a of the take-up reel 6 via air suction passages (not shown). The tip 4a of the magnetic tape 4 is wound around and attracted to the circumferential surface of the hub 6a by the air suction force of the blower 31.

Next, a sensor 35 is placed on the terminal end 9b side of the loading passage 9.
is located. This sensor 35 includes a light emitting element 36 and a light receiving element 37 arranged on both sides of the loading passage 9.
The light receiving element 37 receives the detection light 38 that is emitted from the light emitting element 36 and crosses the loading path 9.

Next, the loading operation of the magnetic tape 4 will be explained.

As shown in FIG. 3, when both blowers 30, 31 are operated, air is discharged into the loading passage 9 from the plurality of air discharge ports 29a to 29e in the directions indicated by arrows a-e. Note that the air sucked into the air suction port 33 of one of the blowers 31 sucks the air into the circumferential surface of the hub 6a of the take-up reel 6 in the direction of arrow f from the outside to the inside.

Next, after the leading end 4a of the magnetic tape 4 wound around the supply reel 5 faces the starting end 9a of the loading path 9, the supply reel 5 is manually or automatically rotated in the direction of arrow g. Supply reel 5 to magnetic tape 4
Bring out.

Then, as shown by the solid line in FIG. 3, the magnetic tape 4
The magnetic tape 4 is transported by the ejection force of the air being ejected in the directions shown by arrows a-e, and is moved along the loading path 9 from the starting end 9a side to the ending end 9b side, through the supply side path 9d, It is transferred in the direction of the arrow through the drum outer circumferential passage 9c and the winding side passage 9e.

Then, the leading end 4a of the magnetic tape 4 is connected to the loading path 9.
When the magnetic tape 4 is transferred to the terminal end 9b and the air transfer of the magnetic tape 4 is completed, the leading edge 4 of the magnetic tape 4 is transferred to the terminal end 9b.
a is the detected light 3 from the light emitting element 36 in the sensor 35
8 is cut off, the light receiving element 37 is switched to a non-light receiving state, and this sensor 35 detects the leading end 4a of the magnetic tape 4.

Then, a timer (not shown) is activated, and the blower 30 is automatically stopped after a certain period of time set by the timer has elapsed.

Then, while a certain period of time set by the timer has elapsed (actually, a short period of inertial rotation time of the motor after the power of the blower 30 motor is cut off is also added), the magnetic tape 4 The leading end 4a of the loading passage 9 is sent out from the terminal end 9b of the loading passage 9 to the outside of the passage in the direction of the force indicated by the arrow h'. Then, when the blower 30 is stopped, the air discharge from the air discharge ports 29a to 29d into the loading passage 9 is stopped, and the transport of the magnetic tape 4 by air is stopped. Note that if the supply reel 5 is to be manually rotated in the direction of the arrow g, the manual rotation may be stopped when the blower 30 is stopped; if the supply reel 5 is to be automatically rotated in the direction of the arrow g, the blower 30 is At the same time as the stop, the rotation of the supply reel 5 is also automatically stopped.

Next, as shown by the chain line in FIG. 3, the leading end 4a of the magnetic tape 4 is manually lifted in the direction of arrow i, and the leading end 4a is wound around the circumferential surface of the hub 6a of the winding wheel 6. It is adsorbed by the air suction force of 31. Then, the leading end 4a of the magnetic tape 4 is attached to the hub 6 of the take-up reel 6.
After the blower 31 is completely engaged with the circumferential surface of a, the blower 31 is also stopped.

Note that the leading end 4a of the magnetic tape 4 is connected to the hub 6 of the take-up reel 6.
In order to wrap the tape around the circumferential surface of the magnetic tape 4, it is not necessarily the adsorption method using the suction force of air as described above, but a method of inserting the tip 4a of the magnetic tape 4 into a slit provided in the hub 6a and locking it. It is possible to use a locking method using various other locking means.

With the above steps, the entire loading operation of the magnetic tape 4 is completed.

Next, when the standby button is pressed, as shown in FIG. The movable members such as the guide 19 and the tape guide 20 are moved from the backward movement position shown by the dotted line to the forward movement position shown by the chain line, and the magnetic tape 4 is moved to the rotating head drum 7 as shown by the chain line. Peripheral surface 7a
The frame is wound in a helical manner at a predetermined winding angle, and the rack is passed around heads and guides.

Next, when the play button is pressed, the capstan 25 is first rotated in the direction of the arrow, as shown in FIG.
Next, the magnetic tape 4 is pressed against the capstan 25 by the pinch roller 26, and the supply reel 5 and take-up reel 6 are driven to rotate in the directions of arrows g and 2, respectively.

As a result, the magnetic tape 4 is run at a constant speed in the direction of the arrow in the loading path 9 under tension, thereby performing desired recording or reproduction.

Note that during recording or playback, or during fast forwarding or rewinding, if the magnetic tape 4 is accidentally cut or the magnetic tape 4 is completely wound on the take-up reel 6 or the supply reel 5, the sensor 35 may When the light-receiving element 37 is switched to the light-receiving state in which it again receives the detection light 38 from the light-emitting element 36, it is determined that the magnetic tape 4 in the loading path 9 is gone, and, for example, a tape drive system stop circuit (not shown) is activated. ) is operated, and the running drive system for the magnetic tape 4 and the rotary head drum 7 are automatically stopped.

Next, according to FIGS. 1A to 2, the loading passage 9
The drive mechanism of the entry/exit log guides 18, 19 and the dual-purpose guide 54 provided at the entrance/exit 9f19g portion of the drum outer circumferential passage 9C will be described.

First, the entry/exit log guides 18 and 19 are connected to a pair of sliders 40a and 40 via support blocks 18a and 19a, respectively.
The tape guide 20 is also mounted on the slider 40b.

Both sliders 40a and 40b are connected to a pair of guide rails 41a and 41 fixed to the front surface 1a of the VTR main body.
b, and is configured to be able to reciprocate in the directions of arrows m, m' and nXn', and sliders 40a, 4 are provided on the front surface 1a of the VTR main body 1 at an intermediate position between the guide rails 4Ia, 41b.
A common stopper 42 of 0b is fixed. In addition,
A pair of fulcrum shafts 43a and 43b are provided on the front surface 1a of the VTR main body 1.
A pair of co-moving arms 44 rotatably attached via the
Rods 46a, 46b and links 47a, 47 a, 44b support limiter springs 45a, 45b, respectively.
It is connected to both sliders 40a and 40b via b. In addition, a guard motor 4 is mounted on the front surface 1a of the VTR main body 1.
A drive shaft 49 that is rotationally driven by a drive shaft 49 is attached, and a drive arm 50 that rotates integrally with the drive shaft 49 is connected by a link 51 to one rotation arm 44a. Further, the double-recessed arms 44a and 44b are connected to links 52.
connected by.

Next, the dual-purpose guide 54 is disposed at the entrance 9f portion of the drum outer circumferential passage 9C, overlapping the movable space of the support block 18a of the entrance guide 18 in the directions of arrows m and m'. As shown in FIG. 2, this dual-purpose guide 54 has a U-shaped configuration in which auxiliary guide plates 54b are integrally provided on both sides of a main guide plate 54a. This dual-purpose guide 54 has a support piece 54c integrally provided on one side thereof and a fulcrum shaft 55 to support the front surface of the VTR main body 1.
It is rotatably attached to a in the directions of arrows p and p'.

Note that this dual-purpose guide 54 is connected to one rotating arm 44a via a link 56. Further, a hit elimination head 17 is attached to an end of the dual-purpose guide 54 opposite to the end on the entrance 9 side of the drum outer circumferential passage 9c.
This hit elimination head 17 is configured to be reciprocated together with the dual-purpose guide 54 in the directions of arrows p and p'.

The drive mechanisms for the entry/exit guides 18, 19 and the dual-purpose guide 54 are constructed as described above.

As shown in FIG. 1A, when loading the magnetic tape 4 described above, the drive arm 50 is rotated in the direction of arrow θ' by the guard motor 48, and the loading/unloading log guides 1, 19 and tape guide 20 are rotated by the guard motor 48. These are moved back in the force directions of arrows m' and n' and are retracted out of the loading passage 9.

Therefore, as described above, the magnetic tape 4, which is transported by air in the direction of the arrow in the loading passage 9, will not accidentally come into contact with the loading/unloading guides 18, 19 or the tape guide 20.

Further, as shown in FIG. 1A, when loading the magnetic tape 4 described above, the dual-purpose guide 54 is moved forward in the direction of the arrow p, and this dual-purpose guide 54 is moved forward to the operating position within the loading path 9. There is. At this time, the hit erasing head 17 is retracted out of the loading passage 9, contrary to the dual-purpose guide 54.

As described above, the U-shaped portion of the dual-purpose guide 54 consisting of the main guide plate 54a and the auxiliary guide temporary 54b passes through the supply side passage 9d at the entrance 9f of the drum outer circumferential passage 9c.
The leading end 4a of the magnetic tape 4, which has been transported by the air towards the end, is extremely reliably guided together with the air discharged from the air leaf outlet 29e in the direction of the arrow C. As a result, the leading end 4a of the magnetic tape 4 is extremely reliably guided to the entrance 9f of the drum outer circumferential passage 9c by the dual-purpose guide 54.
The leading end 4a of the juice tape 4 is transferred extremely smoothly from the supply side passage 9d to the drum outer circumferential passage 9c.

Next, as described above, when the standby button is pressed after the loading of the magnetic tape 4 is completed, the drive arm 50 is rotated in the direction of arrow 0 by the geared motor 48, as shown in FIG. 1B. Then, one rotating arm 44a is rotated in the direction of the arrow q via the link 51, and the other rotating arm 44b is further rotated in the direction of the arrow r via the link 52.
rotated in the direction. As a result, limiter springs 45a, 45b, rods 46a, 46b and link 47
Both sliders 40a and 4Qb are moved forward in the directions of arrows m and n through a and 47b, and the entry/exit log guide 18, 19 and tape guide 20 are moved forward to a forward position where they are close to the circumferential surface 7a of the rotating hent drum 7. be done. Note that at this time, both sliders 40a and 40b are connected to the limiter spring 45a, respectively.
, 45b are crimped and stopped by the stopper 42 through the spring force of the rods 46a, 46b and the link 47a2.
It is locked in its rest position by the toggle effect due to the slight refraction with 47b.

However, at this time, due to the rotation of one of the rotation arms 44a in the direction of arrow q, the dual-purpose guide 54 is also rotated in the direction of arrow p' via the link 56. Since the dual-purpose guide 54 is rotated in the direction of arrow p' in advance of one slider 40a that is moved forward in the direction of arrow m, the entrance guide 54 is moved forward in the direction of arrow m by the slider 40a. The 18 support blocks 18a will not come into contact with the dual-purpose guide 54 unexpectedly. That is, the dual-purpose guide 54 is rotated in the direction of the arrow p' and retreated to the outside of the loading passage 9 so as not to obstruct the forward movement of the entrance guide 18 and the support block 18a in the direction of the arrow m. At this time, the hit erasing head 17 enters into the loading passage 9 in the opposite direction to the dual-purpose guide 54.

As a result of the above, as described above, the magnetic tape 4 is accurately wound in a helical manner around the peripheral surface 7a of the rotary head drum 7 at a predetermined winding angle, and the hit erasing head 17 is brought into contact with the magnetic tape 4. , the travel path of the magnetic tape 4 relative to the rotary head drum 7 is accurately defined. Then, in this state, recording or reproduction on the magnetic tape 4 described above is performed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various effective changes can be made based on the technical idea of the invention.

Furthermore, the present invention is not limited to reel-to-reel video tape recorders; Applicable to the device.

〔Effect of the invention〕

As described above, the tape-shaped body loading device of the present invention is provided with a dual-purpose guide that guides the tape-shaped body together with air toward the entrance of the drum outer circumferential passage, so that the tape-like body is guided through the loading passage from the starting end side to the drum outer circumference. The tip of the tape-like material that has been transported by air toward the entrance of the passage,
Since the dual-purpose guide can extremely reliably guide the tape to the entrance of the drum outer circumferential passage, the tape-shaped body will not be accidentally jammed at the entrance of the drum outer circumferential passage. Loading of tape-like objects can be done smoothly.

Moreover, the dual-purpose guide is configured to be movable, and when recording or reproducing the tape-shaped body after loading the tape-shaped body, the dual-purpose guide is retracted from the loading path, thereby recording or reproducing the tape-shaped body. Since the dual-purpose guide does not interfere in any way with the movement of the entrance/exit guide, which is moved at the same time, the entrance/exit guide I can be accurately moved to a predetermined position to accurately define the running path of the tape-shaped body. Recording or reproduction of tape-shaped bodies can be performed with high precision.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
Figures A and 1B are front views for explaining the main parts, Figure 2 is a perspective view of the dual-purpose guide, Figure 3 is a front view of the entire tape loading device, and Figure 4 is a perspective view of the entire tape loading device. . In addition, in the symbols used in the drawings, 4-......-
・−−1−−−−Magnetic tape (tape-shaped body) 5−・−
−−m−−−−−・・−−−−One supply reel 6−・−
−−11−−−−−・・−・Take‐up reel 7−・−・・
---1-・--・-・Rotating head drum (guiding drum) 9・・-・〜・-・−・-・-Loading passage 9a-
・−・−・−・−−−m-Start end of loading passage 9
b-111---------1 Loading passage terminal end 9c------11 Drum outer circumferential passage 9f--
------1・----1・Population of drum outer passage 9g
・・−−−−1−−−−−−−・−Drum outer peripheral passage outlet 18−−−−−−−−−−・−Population guide 19−−−−−
- Exit guides 29a to 29e - Air discharge ports 30, 31 - Blower 54 - It is a dual-purpose guide.

Claims (1)

[Scope of Claims] A duct-shaped loading passage having a starting end disposed on the supply reel side, a terminal end disposed on the take-up reel side, and a drum outer circumferential passage formed along the circumferential surface of the guide drum;
It is equipped with a plurality of air discharge ports provided along the loading path, and a blower that discharges air from the air discharge ports into the loading path, and discharges the tape-shaped body fed from the supply reel from the air discharge port. In a loading device for a tape-shaped body configured to be loaded by moving the tape-shaped body along the loading passage from the starting end side to the terminal end side by air, the tape-shaped body is guided along with the air toward the entrance of the drum outer circumferential passage. A dual-purpose guide is provided, and the dual-purpose guide is configured to be able to freely reciprocate between an operating position in which the tape-shaped body is guided along with air in the loading passage and a non-operating position in which it is evacuated from the operating position. , A tape-shaped body characterized in that the dual-purpose guide is configured to move forward to an operating position when loading the tape-shaped body, and move the dual-purpose guide back to a non-operating position when recording or reproducing the tape-shaped body. Loading device.