JPH0668642A - Data cartridge winder and data cartridge - Google Patents

Abstract

PURPOSE:To correct the flatness of a base plate of a cartridge during the automatic take-up work of a magnetic tape. CONSTITUTION:When the magnetic tape 6 is automatically taken up to a tape reel 5 by a tape cartridge winder, both left and right end parts 3a of the base plate 3 of the cartridge 2 molded with a synthetic resin are pressed on a base plate supporting base 22 by a pair of left/right press plates 31, thereby the flatness of the base plate 3 is corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data cartridge suitable for high-density recording (back memory) of CPU data, and a data cartridge winder for automatically winding a magnetic tape in the data cartridge. It is about.

[0002]

2. Description of the Related Art The applicant of the present invention first applied for a prior application example of a data cartridge (for example, Japanese Patent Application No. 2-410005).

As shown in FIGS. 4 and 5, the data cartridge 1 of this prior application is formed of a transparent synthetic resin on a base plate 3 which is a lower half of which the cartridge 2 is formed of a synthetic resin. It is formed by screwing a thin box-shaped upper cover 4 which is an upper half. A pair of left and right tape reels 5 formed of synthetic resin are rotatably supported on the base plate 3, and magnetic tapes 6 as tapes are wound around the tape reels 5. The magnetic tape 6 is guided by three tape guides 7 with flanges attached to the base plate 3 and hung along the inside of the front wall 4 a of the upper cover 4. A driven roller 8 and a pair of left and right corner rollers 9 formed of synthetic resin are rotatably supported at substantially the center of the front edge of the base plate 3 and the left and right corners of the rear edge. And
An elastic drive belt 10 formed of a rubber belt or the like is wound between the driven roller 8 and both corner rollers 9 in a substantially T shape with a strong tension. A pair of left and right driving portions 10a between the driven roller 8 and the both corner rollers 9 of the driving belt 10 are provided on the outer circumferences of the pair of left and right tape winding portions 6a of the magnetic tape 6 wound around the both tape reels 5. Being pressed against.

The two tape reels 5 and the three rollers 8 and 9 are formed on the base plate 3 vertically by press fitting or the like.
The optical detecting mirror 13 at the tape end is attached to the inner side of the running path of the magnetic tape 6 by being inserted by.

Next, when the data cartridge 1 is mounted on the recording / reproducing apparatus, the notch 14 formed on one side of the driven roller 8 on the front edge side of the base plate 3 and the upper cover 4 is opened and closed. The opening / closing door 15 attached between the base plate 3 and the upper cover 4 is opened in the direction of arrow a as indicated by the alternate long and short dash line, and the magnetic head 16 on the recording / reproducing apparatus side is inserted into the notch 14 in the direction of arrow b. Is contacted with the magnetic tape 6. At the same time, a driving roller 17 such as a rubber roller, which is rotatably driven by a motor (not shown) on the recording / reproducing apparatus side, is inserted into an opening 18 formed in the front wall 4a of the upper cover 4 in front of the driven roller 8. The drive roller 17 is inserted from the b direction and is pressed against the outer circumference of the large diameter roller portion 8b integrally formed on the belt winding surface 8a of the driven roller 8. Then, when the driven roller 8 is rotationally driven in the direction of arrow c by the drive roller 17 and the drive belt 10 is rotationally driven in the direction of arrow d, the drive roller 10a drives the drive belt 10 via the tape winding portion 6a. The tape reel 5 is rotationally driven in the direction of arrow e, the magnetic tape 6 is run in the direction of arrow f at a high speed of 25 to 120 inch / sec, and the magnetic head 16 records and reproduces data of the CPU on the magnetic tape 6. Is configured.

A conventional data cartridge winder 21 for automatically winding the magnetic tape 6 around the outer circumference of one tape reel 5 is constructed as shown in FIGS. 6 and 7.

First, the base plate 3 before attaching the upper cover 4 is set on the base plate supporting base 22, and then the magnetic tape 6 pulled out from the tape supply reel 23 around which a large amount of the magnetic tape 6 is wound, The tape tensioner 24, the measuring roller 25, and the punching puncher 26 are stretched along the plurality of tape guides 27 so as to be stretched. And
The leading end of the pulled-out magnetic tape 6 is connected to one tape reel 4 on the base plate and one drive unit 10 of the drive belt 10.
Insert it with a.

After this, the data cartridge winder 2
1 starts the operation according to the set program, and first, the tape end detection hole is formed in the tip end side of the magnetic tape 6 by the hole puncher 26. Then,
The drive roller 28 rotationally driven by the motor is pressed against the large-diameter roller portion 8b of the driven roller 8 from the direction of arrow b, and the driven roller 8 is rotationally driven at high speed in the direction of arrow c,
The drive belt 10 is rotationally driven at high speed in the direction of arrow d,
One of the tape reels 5 is rotationally driven at a high speed in the direction of arrow e by the one drive unit 10a.

Then, the magnetic tape 6 is pulled out from the tape supply reel 23 in the direction of the arrow g, the winding tension of the magnetic tape 6 is automatically adjusted by the tape tensioner, and the winding length of the magnetic tape 6 is measured. While measuring with the roller 25, the magnetic tape 6 is automatically wound around the outer circumference of the one tape reel 5 at high speed in the direction of arrow e.

When it is measured by the measuring roller 25 that the winding length of the magnetic tape 6 has reached the set value, the drive roller 28 is separated from the driven roller 8 in the direction of arrow b ', and The tape reel 6 is stopped, the automatic winding operation of the magnetic tape 6 is completed, and the tape end detection hole is formed on the terminal end side of the magnetic tape 6 by the hole puncher 26. After that, the end side of the magnetic tape 6 is separated and hung over the three tape guides 7, and the end side of the magnetic tape 6 is sandwiched between the other tape reel 5 and the other drive portion 10a of the drive belt 10. Then a series of work is completed.

[0011]

However, in the conventional data cartridge winder 21, the base plate 3 is installed on the base plate support 22 and the pair of left and right tape reels 5 and the three rollers 8 and 9 are vertically moved. The magnetic tape 6 was automatically wound only by holding it down.

Therefore, as shown in FIG. 8, the flatness of the base plate 3 formed of synthetic resin is poor, and the drive belt 10 is wound around the three rollers 8 and 9 with a strong tension, so that the rigidity is low. Left and right ends 3 of the base plate 3
When the warp in the direction of arrow h occurs in a, the magnetic tape 6
During the automatic winding operation, the drive belt 10 moves up and down, causing the magnetic tape 6 to be in a so-called "wound winding" state, resulting in a defective product, or in some cases, a pair of left and right corner rollers 9 and the like from the spindle 11. There is a problem in that the magnetic tape 6 is accidentally dropped in the upper direction of the arrow i and the automatic winding operation of the magnetic tape 6 cannot be performed.

The present invention has been made in order to solve the above-mentioned problems, and a data cartridge winder capable of favorably performing an automatic winding operation of a magnetic tape and a stable running of the magnetic tape even after the cartridge is assembled. It is intended to provide a data cartridge capable of performing.

[0014]

A data cartridge winder according to the present invention for achieving the above object pivotally supports a pair of tape reels and three rollers rotatably on a base plate formed of synthetic resin. Then, the pair of drive portions of the drive belt wound in a substantially T shape between the three rollers are pressed against the outer circumferences of the pair of tape reels, and the tip of the magnetic tape supplied from the tape supply reel is connected to the one tape. A data cartridge winder configured to wind the magnetic tape around the outer circumference of the one tape reel by rotationally driving the drive belt while being sandwiched between the reel and one drive portion of the drive belt. In the above, the flatness correcting means for correcting the flatness of the base plate at the time of winding the magnetic tape is provided. At this time, the flatness correcting means is constituted by a pair of pressing plates that press and fix both end portions of the base plate near the pair of corner rollers of the three rollers onto the base plate support base. preferable. Further, in the data cartridge of the present invention, after the magnetic tape is wound on the tape reel by the data cartridge winder, the thin box-shaped upper cover formed of synthetic resin is screwed onto the base plate to assemble the cartridge. The flatness of the base plate is corrected by at least the left and right side walls of the upper cover.

[0015]

In the data cartridge winder of the present invention constructed as described above, even if the flatness of the base plate made of synthetic resin is poor, or the drive belt is wound around the three rollers with a strong tension. Even if the base plate having low rigidity is warped, the flatness of the base plate can be surely corrected by the flatness correction means such as the pair of pressing plates. Further, in the data cartridge of the present invention configured as described above, after winding the magnetic tape on the tape reel by the data cartridge winder, the thin box-shaped upper cover formed of synthetic resin is screwed onto the base plate. Then, when the cartridge is assembled, the flatness of the base plate can be corrected by at least the left and right side walls of the upper cover, so that the base plate is not warped after the cartridge is assembled.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the data cartridge and winder of the present invention will be described below with reference to FIGS. It should be noted that the same reference numerals are given to the same structural parts as those in FIGS. 6 to 8 and duplicate description is omitted.

First, in the data cartridge winder 21 of the present invention, as shown in FIGS. 1 and 2, after the base plate 3 is placed on the base plate support 22, a pair of left and right corner rollers 9 are provided. The left and right end portions 3a of the base plate 3 are pressed over the entire width of the base plate 3 on the base plate support 22 with a pressing force of about 3 kg or more by the pair of left and right holding plates 31 which are flatness correcting means. It is fixed.

At this time, in FIG. 1 and FIG. 2, for convenience, a pair of left and right holding plates 31 are screwed onto the base plate support 22 by a pair of set screws 31, but in an automatic machine, Usually, an automatic tightening mechanism (not shown) or the like is adopted.

As described above, in the data cartridge winder 21 of the present invention, the left and right end portions 3a of the base plate 3 are pressed and fixed on the base plate support base 22 by the pair of left and right holding plates 31, so that they are combined. Even if the flatness of the base plate 3 formed of resin is poor, or the drive belt 10 is wound around the three rollers 8 and 9 with a strong tension, the base plate 3 having a low rigidity as shown in FIG. Even if a warp occurs, the flatness of the base plate 3 can be reliably corrected.

Therefore, the pair of left and right tape reels 5 and 3
Since the automatic winding operation of the magnetic tape 6 described with reference to FIG. 6 can be performed in a state in which the verticality (parallelism) of the two rollers 8 and 9 is secured, the drive belt 10 moves during the automatic winding operation. It is possible to prevent the vertical movement and the pair of left and right corner rollers 9 and the like from dropping off from the support shaft 11 in advance.

As a result, the magnetic tape 6 is never wound into a badly wound state and becomes a defective product, and the magnetic tape 6 can always be stably and cleanly wound around the tape reel 5 and the magnetic tape 6 can be wound. The automatic winding work can always be performed well.

Next, the data cartridge 1 of the present invention is
As shown in FIGS. 3 to 5, on the lower surface of the ceiling wall 4b of the thin box-shaped upper cover 4 formed of a synthetic resin having a light-transmitting property, the ceiling wall 4b has a left-right length direction (left and right in FIG. 3). A plurality of screw-fastening bosses 41 are integrally formed at a substantially central position (direction), and a plurality of screw-inserting holes 42 are formed at positions of the base plate 3 that face the plurality of bosses 41.

Therefore, as described above, after the magnetic tape 6 is wound around the tape reel 5 by the data cartridge winder 21, the base plate 3 is attached to the base plate support base 2.
2, the upper cover 4 is screwed onto the base plate 3 to assemble the cartridge 2, and the plurality of tapping screws 43 are inserted into the plurality of screw insertion holes 42 from below the base plate 3 as shown in FIG. When it is inserted and screwed into the plurality of bosses 41 and tightened, substantially central portions of the base plate 3 and the upper cover 4 in the left-right length direction are attracted to each other in the arrow k direction from above and below.

As a result, at the lower ends of the front wall 4a, the left and right side walls 4c and the rear wall 4d of the upper cover 4 shown in FIG. 4, the entire peripheral portions of the left and right end portions 3a and the front and rear end portions 3b of the base plate 3 are The flatness of the base plate 3 can be corrected so as to remove the warp of the base plate 3 as indicated by the alternate long and short dash line in FIG.

Therefore, after the cartridge 2 is assembled,
The base plate 3 is not warped at all, and the verticality (parallelism) of the pair of left and right tape reels 5 and the three rollers 8 and 9 can be secured.

As a result, the data cartridge 1 of the present invention
Is the data cartridge 1 by the recording / reproducing apparatus described above.
The magnetic tape 6 can always be stably run during recording and reproduction, and high-precision recording and reproduction can be performed without off-track of the magnetic head 16. Moreover, this high performance can be maintained semi-permanently.

The embodiment of the present invention has been described above.
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention.

[0028]

The data cartridge winder and the data cartridge of the present invention configured as described above have the following effects.

In the data cartridge winder of the first and second aspects, the rigidity is low because the flatness of the base plate formed of synthetic resin is poor, or because the drive belt is wound around the three rollers with a strong tension. Even if the base plate is warped, the flatness of the base plate can be surely corrected by the flatness correction means such as a pair of holding plates, so that the magnetic tape will not be wound. Therefore, the automatic winding operation of the magnetic tape can be favorably performed, and the yield of defective products can be improved.

In the data cartridge of claim 3, after winding the magnetic tape on the tape reel by the data cartridge winder, the thin box-shaped upper cover made of synthetic resin is screwed on the base plate to assemble the cartridge. At this time, the flatness of the base plate can be corrected by at least the left and right side walls of the upper cover so that the base plate is not warped after the cartridge is assembled. The magnetic tape can always be stably run during reproduction, and high-precision recording and reproduction can be performed for a long period of time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a data cartridge winder that is an embodiment of the present invention.

2 is a partially cutaway schematic front view taken along the line AA of FIG.

3 is a sectional view taken along the line BB of FIG. 4 showing a main part of a data cartridge which is an embodiment of the present invention.

FIG. 4 is a partially cutaway plan view of the entire data cartridge, in which an embodiment of the present invention and a prior application example are described together.

5 is an exploded perspective view of the entire data cartridge similar to FIG.

FIG. 6 is a schematic plan view showing an entire conventional data cartridge winder.

FIG. 7 is a perspective view showing a main part of a conventional data cartridge winder.

FIG. 8 is a schematic front view taken along line CC of FIG. 7 for explaining the warp of the base plate when the magnetic tape is wound by the conventional data cartridge winder.

[Explanation of symbols]

 1 Data Cartridge 2 Cartridge 3 Base Plate 3a Left and Right Ends of Base Plate 3b Front and Back Ends of Base Plate 4 Top Cover 4a Top Cover Front Wall 4b Top Cover Ceiling Wall 4c Top Cover Left and Right Side Walls 4d Top Cover Rear Wall 5 tape reel 6 magnetic tape 6a magnetic tape tape winding section 8 driven roller 9 corner roller 10 drive belt 10a drive belt drive section 21 data cartridge winder 22 base plate support 23 tape supply reel 31 presser plate (flatness correction means) ) 41 Screw fixing boss 42 Screw insertion hole 43 Tapping screw

Claims (3)

[Claims] 1. A pair of drive belts in which a pair of tape reels and three rollers are rotatably supported on a base plate formed of synthetic resin, and a drive belt wound around the three rollers in a substantially T-shape. The drive section is pressed against the outer circumferences of the pair of tape reels, and the tip of the magnetic tape supplied from the tape supply reel is sandwiched between the one tape reel and one drive section of the drive belt. In a data cartridge winder configured to wind the magnetic tape around the outer circumference of the one tape reel by rotationally driving a drive belt, a flat surface that corrects the flatness of the base plate when the magnetic tape is wound. A data cartridge winder having a degree correcting means. 2. The flatness correcting means is constituted by a pair of pressing plates which press and fix both end portions of the base plate in the vicinity of a pair of corner rollers of the three rollers on a base plate supporting base. The data cartridge winder according to claim 1, wherein: 3. A cartridge is assembled by winding a magnetic tape on a tape reel with the data cartridge winder according to claim 1 and screwing a thin box-shaped upper cover made of synthetic resin onto the base plate. A data cartridge configured to correct the flatness of the base plate by at least the left and right side walls of the upper cover.