JPS63164063A - Loader for tapelike body - Google Patents

Abstract

PURPOSE:To exactly guide and carry a tape with the air even if the loader inclines by providing a drum fence along a tape reed in a loading path that runs along the peripheral surface of a guide drum. CONSTITUTION:A tape 4 fed out by a feeding reel 5 and other elements is lead into the outer path 9c of the loading path provided along the peripheral surface of the guide drum 7, and carried by the air flow generated by a blower. A drum fence 40 is wound along a tape reed 44 on the outer surface of a fixed lower drum 41, so that the peripheral side surface 71 of the drum, the fence 40, and walls 46, 47 jointly form a duct. As a result, even if the titled loader is inclined, the tape 4 is exactly carried spirally through the duct, hence recording/reproducing can be executed accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is a tape-shaped cooling device that is most suitable for application to a reel-to-reel type magnetic recording/reproducing device, This invention relates to a device in which a tape-like object such as a film or a film is transported by air along a duct-like loading path.

[Summary of the invention]

This invention uses air to transport a tape-like object such as a tape or film fed from a supply reel to a take-up reel along a duct-like loading passage formed along the circumferential surface of a guide drum. In the tape-shaped body loading device configured as above, the tape-shaped body can be reliably guided and transported along the tape lead provided on the circumferential surface of the guide drum, and during subsequent recording or reproduction. , the tape-like body can be reliably run along the tape lead of the guide drum.

[Conventional technology]

Traditionally, reel-to-reel magnetic recording and reproducing devices have been equipped with 8
A duct-like loading passage formed along the circumferential surface of the guide drum is provided between the supply reel and the take-up reel, and air is discharged into the loading passage by a blower.

The magnetic tape fed out from the supply reel is transported by air along a loading path to the take-up reel, and during subsequent recording or playback, the magnetic tape is moved along a tape lead provided on the circumference of a guide drum. There is an iCL that allows you to drive with it.

[Problem that the invention seeks to solve]

However, this device by Ikejubei did not have a means to guide the magnetic tape along the leads on the circumference of the guide drum, so if the set (the entire device was tilted, etc.), the magnetic tape could not be guided. If the magnetic tape cannot be guided and transported along the tape lead, and the magnetic tape comes off the tape lead during later recording or playback, fatal accidents often occur.85. Ta.

This invention has been made to solve these problems, and it is possible to reliably guide the tape-like body along the day bleed on the circumferential surface of the guide drum even when the setting example is tilted. It is an object of the present invention to provide a loading device for a tape-shaped body that can be transported by using a tape-shaped body.

[Means for solving problems]

The tape-shaped body loading device of the present invention is as follows.

A duct-shaped loading passage whose starting end is placed on the supply reel side, an alley placed on the take-up reel side, and is formed along the circumferential surface of the guide drum, and a plurality of air passages provided along the loading passage. a discharge port; a blower that discharges air from the air discharge port into the loading passage;
The drum fence is provided along a tape lead formed on the circumferential surface of the guide drum, and the tape-shaped body fed out from the supply reel is guided along the loading path by air discharged from the air discharge port. The tape is formed so as to be transferred from the side to the end side, and at this time, the tape-shaped body is formed on the circumferential surface of the guide drum so that it is guided and transferred along the tape lead by a drum fence.

[For production]

According to the tape-shaped body loading device of the present invention, when the tape-shaped body is transported by air in the loading passage, the tape-shaped body is moved by the drum fence provided along the tape lead on the circumferential surface of the guide drum. The tape can be reliably guided and transferred along the tape lead.

〔Example〕

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

First, as shown in Figures 1 and 2, there is a vertical video tape recorder body (hereinafter simply referred to as the VTR body).
A supply reel stand 2 and a take-up reel stand 3 are arranged at a distance from each other on the left and right sides of the upper side of the front surface of [a]. 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 IJ-roll stand 2 and the take-up reel stand 3. It's broken.

Further, a rotary head drum serving as a guide drum is disposed at a position close to the lower part of the supply reel 5 on the front surface 1a of the VTR main body.

A loading passage 9 is arranged at a position close to the lower side of both reels 5.6 on the front ffa of the VC, VTR body. This loading passage 9 has a starting end 9a disposed close to the lower part of the supply reel 5, a terminal end 9b disposed below the take-up reel 6 at a predetermined interval, and
Horizontally along the circumferential surface 7aK of the rotating head drum 7 and approximately U
It has a drum outer circumferential passage 9C which is shaped like a letter. In addition, the supply side passage 9d between the starting end 9a and the drum outer circumferential passage 9C is horizontally formed in a substantially inverted U-shape, and the terminal end 9b
The winding side passage 9e between the drum outer circumferential passage M9d and the end 9
5 so that it gradually rises toward b. Therefore, this loading passage is curved in a zigzag shape, drawing a gentle curve as a whole. This loading passage 9 is formed into a duct shape by a front panel 10 attached to the front surface of the VTR body 41, and a front cover fitted to the front surface of the front panel O, which can be opened and closed. ing. The front cover ]] is molded from a transparent synthetic resin, etc., and is rotatably attached to the VTR body via hinges [2], and is in the closed state shown by chain lines in Figures [1] and 2. and locking means C
(not shown). Note that the magnetic tape 4 is attached to the circumferential surface 7a of the rotating head drum 7.
In order to spirally wind the
It is gently sloped so that the starting end 9a side is low and the terminal end 9blJJ is high, and in accordance with this, a step is provided so that the supply reel 5 is low (one winding reel 6 is high).

Next, along the supply side passage 9d of the CI-ding passage 9, the guide post 14. Tension detector 15. Guide roller 16. Erasing head 17, entrance guide 18
etc. are arranged along the first winding side passage 9e, the exit guide 1
9% taper guide 20, impedance roller 21.
Audio erase head 22. audio bell head 23
．． Rad to audio monitor 24. Capstan 25.
Pinch roller 26. Tape guides such as a guide roller 27, heads, and the like 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 32a to 32e of one or more blowers 30, 3] are connected to the air discharge ports 29a to 29e. Note that the air suction port 33 of one of the blowers 3J is connected to a large number of air suction ports (not shown) provided on the circumferential surface of the hub 6a of the one winding wheel 6 through an air suction passage kN5 (not shown). connected and
The tip 4a of the magnetic tape 4 is wound around and attracted to the circumferential surface of the hub 6a by the suction force of air by the blower 3.

Next, a sensor 35 is placed on the terminal end 9b side of the a-ding passage 9.
is located. This sensor 35 is.

A light sensor consisting of a light emitting element 36 and a light receiving element 37 arranged on both sides of the loading passage 9 is used to illuminate the loading passage 9.
The light-receiving element 37 receives the detection light 38 that crosses the area.

Next, the a-ding operation of the magnetic tape 4 will be explained.

As shown in FIG. 1, first, when both blowers 30 and 31 are operated, air is discharged into the loading passage 89 from the plurality of air discharge ports 29a to 29e in the direction indicated by arrows a%e. Note that the air sucked into the air suction port 33 of one of the blowers 3J draws 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 Figure 1, the magnetic tape 4 becomes
The magnetic tape 4 is transported by the ejection force of the air being ejected in the directions shown by arrows a to e, and the magnetic tape 4 is moved along the inside of the loading path wPIQ. A supply side passage 9d extends from the side 9a to the end 9b.

It is transferred in the direction of the arrow through the drum outer circumferential passage 9c and the take-up valve 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 detection light 3 from the element 36 emitted by 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 (in some cases, a short period of inertial rotation time of the motor after the power to the blower 30 motor is cut off is also added), the magnetic tape is 4 is sent out from the terminal end 9b of the 0-ding passage 9 to the outside of the passage by a predetermined length in the direction indicated by the arrow. 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 When the supply reel is stopped, the 50 revolutions of the supply reel are also automatically stopped.

Next, as shown by the chain line in FIG. 1, 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 hepro a of the winding wheel 6. It is adsorbed by the air suction force of the blower 3. 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 3 is completely engaged with the circumferential surface of the blower 3, the blower 3] is also stopped.

+^ Even if you do not use the adsorption method using the suction force of the air mentioned above, you can attach the magnetic tape 4I7) to the slit that served as the hub 6aK and the tip 4a.
It is possible to use a method of locking by inserting or a method of locking using various other locking means.

With the above steps, the entire magnetic chip 40D-ding operation is completed.

Next, when the standby button is pressed, as shown in FIG.
-g, then tension detector]5. Erase head while eating】7. Entrance guide] 8° Exit guide] 9. The movable members such as the tape guide 20 are each moved forward 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 rotates once on the circumferential surface of the head drum 7 as shown by the chain line. 7a in a helical manner at a predetermined wrapping angle,
The rack is given to the heads and guides.

Next, when the play button is pressed, the first [c, capstan 25-! The magnetic tape 4 is rotated in the direction of the IX arrow, and then the magnetic tape 4 is rotated by the pinch roller 26.
is crimped onto the capstan 25, and the supply reel 5
and the winding wheel 6 are each rotated in the direction of arrow g. Due to this.

The magnetic tape 4 is run at a fast speed in the direction of the arrow within the loading path wJD to perform desired recording or reproduction.

3. 8 when recording or playing back, or when fast forwarding or rewinding.
If the magnetic tape 4 is accidentally cut or the magnetic tape 4 is completely wound onto the take-up reel 6 or the supply reel 5, the light-receiving element 37 of the sensor 35 receives the detected light 38 from the light-emitting element 36 again. When the light receiving state is switched to receive light, it is determined that the magnetic tape 4 in the loading path 9 is gone, and for example, a tape running drive system stop circuit (not shown) is operated, and the magnetic tape 40 running drive system and rotation are activated. The head drum 7 is automatically stopped.

Incidentally, in this loading device, as shown in FIGS. 3 to 5, a drum fence 40 is provided along the circumferential surface 7aVc of the rotary head drum 7, which is a guide drum.

First, in the one-rotation head drum 7, the lower drum is the fixed drum 4.
], the soil drum is constructed as a rotating drum 42, and a plurality of video heads (
A rotating head) 43 is attached. A tape lead 44 is formed in a spiral shape along the circumferential surface of the fixed drum 4. Then, in the outside drum part of the o-ding passage 9, the drum fence 40 is placed on the circumferential surface of the fixed drum 4 in such a way that it does not protrude above the surface of the tape lead 44 or the ridge of the tape lead 44. It is installed in a slotted manner along the . In addition.

Here, the drum fence 40 is divided into a plurality of parts along the circumferential surface of the fixed drum 44, and a plurality of screws 45 are attached to the fixed drum.
Although the entire drum fence 40 was fixed with screws,
The number of screws 45 can be reduced if the screws 45 are formed from a single member.

As a result of the above, the drum outer circumferential passage 9C includes the circumferential surface 7a of the one-rotation head drum 7, the wall surface 46 along the drum circumferential surface 7a of the front panel, and the drum fence, as shown in FIGS. 4 and 5. 40 and the front cover] drum fence 4
0 and the opposing wall surface 47 form an almost complete duct.

As a result, the set (referring to the entire videotape recorder)
Even if it is vertical or has an inclination of ]0″~206,
When the magnetic tape 4 is transferred in the direction of the arrow by air inside the drum outer circumferential passage 90.

The magnetic tape 4 is reliably guided by the drum fence 40 and is reliably transported in a helical manner along the tape lead 44 around the peripheral portion 7a of the rotary head drum 7.

Therefore, as described above, when recording or reproducing the magnetic tape 4 after the a-ding is completed, the magnetic tape 4 is
The magnetic tape 4 can be reliably transferred from the position on the drum fence 40 shown by the solid line in FIG. 5 to the position on the tape lead 44 shown by the chain line in FIG. (The Wi magnetic tape can be accurately run along the tape lead 44. Also, since the Wi magnetic tape can be accurately run along the tape lead 44, recording or reproduction of video signals by the video head 43 can be performed at high speed. Can be done with precision.

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

Furthermore, the present invention is not limited to reel-to-reel video tape recorders, but can also be applied to magnetic recording and reproducing devices using magnetic tape, projection devices using projection film, etc.
, it is applicable to loading devices for various tape-like bodies such as tapes and films.

〔Effect of the invention〕

As described above, in the a-ding loading of the tape-shaped body of the present invention, when the tape-shaped body is transported by air in the loading passage, the tape-shaped body is guided by the drum fence on the circumferential surface of the guide drum. This makes it possible to reliably guide and transport the tape along the tape lead on the circumference of the drum.

Even if the cassette is damaged, the tape-shaped body can be reliably guided and transported along the tape lead on the circumferential surface of the guide drum. As a result, it is possible to prevent a fatal accident in which the tape comes off the tape lead during recording or playback of the tape later, and allows the tape to be moved along the tape lead. The desired recording or reproducing can be performed with high precision by running the disc accurately. Further, damage to the tape due to the tape-like body coming off the tape lead and being run can be prevented.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
The figure is a front view showing the entire a-loading device, FIG. 2 is a perspective view showing the entire loading device, FIG. 3 is a plan view of the drum outer circumferential passage, and FIG. 5 is a partially enlarged sectional view of FIG. 4. Also in the symbols used in the drawings. 4...Magnetic tape (tape-shaped body) 5.
......Supply reel 6...Take-up reel 7...Rotating head drum (guide drum) 9... ...Loading passage 9a...
...Loading passage starting end 9b...
Terminal end 9C of loading passage...Drum outer circumferential passage 29a to 29e...Air discharge port 30.31
...Blower 40 ...Drum fence 44 ...Tape lead.

Claims (1)

[Scope of Claims] A duct-shaped loading passage whose starting end is disposed on the supply reel side and whose terminal end is disposed on the take-up reel side and is formed along the circumferential surface of the guide drum, and along the loading passage. a plurality of air discharge ports provided, and a blower that discharges air into the loading passage from the air discharge ports;
A drum fence is provided along a tape lead formed on the circumferential surface of the guide drum, and the tape-shaped body fed out from the supply reel is guided along the loading path by air discharged from the air discharge port. At this time, on the circumferential surface of the guide drum, a tape-shaped body is configured to be guided and transferred along the tape lead by a drum fence. loading device.