JP2827432B2 - Tape guide pin implantation mold for tape cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a tape guide pin setting die for a tape cartridge used when a tape guide pin is set on a base plate of a tape cartridge such as a data cartridge by a press. It is about.

SUMMARY OF THE INVENTION The present invention has a pin setting guide hole for setting (standing) a tape guide pin at a predetermined position on a base plate of a tape cartridge, and a tape guide is provided in the pin setting guide hole. By inserting a pin and pressing the upper end side of the tape guide pin with a press machine, the tape guide pin is guided by the pin guide surface on the inner peripheral side of the pin guide hole, and the tape guide pin is positioned at a predetermined position on the base plate. In the tape guide pin setting die of the tape cartridge adapted to set the tape guide pin, when the tape guide pin is pressed, a part of the pin guide surface for guiding the tape guide pin is more than other parts. By forming the tape guide pin on the outer surface of the tape guide pin to guide the tape contact surface, for example, by forming the tape guide pin to have a large diameter, the tape guide pin can be separated from the tape contact surface of the tape guide pin. When the tape guide pin is pressed, the tape contact surface of the tape guide pin is formed on the peripheral edge of the pin guide guide hole of the tape guide pin setting mold by forming the pin guide surface on the pin non-contact surface. This prevents the tape contact surface from being so-called longitudinally scratched.

2. Description of the Related Art A tape cartridge having a high track density, for example, a data cartridge has been proposed as an external recording device for a computer (see Japanese Patent Publication No. 52-14976).

As shown in FIG. 5, this type of tape cartridge has a plastic case body (upper case) 101.
A case 104 formed by abutting a lower end surface of a peripheral wall portion 102 provided on a peripheral edge of the peripheral portion of the upper surface of a base plate (lower case portion) 103 made of a metal (aluminum alloy).
A tape supply reel 105 and a tape take-up reel 106 are rotatably mounted therein.
A tape running path 108 for running the magnetic tape 107 is provided between the tape winding reel 106 and the tape winding reel 106.

The tape running path 108 has first and second tape guide rollers 10 having upper and lower flanges on the front side of the case 104 and a lower end.
9 and 110, and a first tape guide pin 111 between the first tape guide roller 109 and the tape supply reel 105.
First tape guide roller 109 and second tape guide roller 1
The second tape guide pin 112 is provided between the second tape guide roller 10 and the third tape guide pin 113 is provided between the second tape guide roller 110 and the tape take-up reel 106.

The magnetic tape 107 sent out from the tape supply reel 105 has a first tape guide pin 111, a first tape guide roller 109, a second tape guide pin 112, a second tape guide roller 110, and a third tape guide pin 113. The tape is then wound on a tape winding reel 106 via the relay.

Reference numeral 114 denotes a drive belt for running the magnetic tape 107. The drive belt 114 is located at the center of the front side of the case 104 (the tape supply reel 105 and the tape take-up reel 1).
06) and the case 104
First and second corner rollers arranged on both sides on the back cotton side
It is suspended in a T shape at 116,117.

The drive roller 115 of the drive belt 114
A part of the way from to the first corner roller 116 is
The magnetic tape 107 wound around the tape supply reel 105 is wound (wrapped) on the outermost periphery, and a part of the space from the drive roller 115 to the second corner roller 117 is partially wound on the tape winding reel. The tape supply reel 105 and the tape take-up reel 106 are wound around the outermost periphery of the magnetic tape 107 wound around the tape 106, and the drive belt 115 is driven to rotate by the drive roller 115.
Is rotated to supply and take up the magnetic tape 107.

In the tape cartridge as described above, a tape guide pin planting mold 118 is generally arranged above the base plate 103 as shown in FIG.
The first, second, and third pin planting guide holes 119, 120, 121 provided in 18
Insert the first, second, and third tape guide pins 111, 112, 113, etc., each made of steel or stainless steel into a round bar shape, and press the upper ends of these pins with a press (not shown) to lower the lower ends. By invading (submerging) the base plate 103, the first, second, and third tape guide pins 111, 112, 113,... Are erected on the base plate 103.

[Problems to be Solved by the Invention] By the way, in the conventional tape guide pin planting die 118, the first, second, and third pin planting guide holes 119, 120, 121, etc. are formed by the first, second, and third tape guides. Since the holes are formed by forming a round hole having a diameter corresponding to the thickness of the pins 111, 112, 113, etc., the following problem arises.

(1) When the first, second, and third tape guide pins 111, 112, 113,... Are inserted into the first, second, and third pin planting guide holes 119, 120, 121, and so on, as shown in FIG. In some cases, the tape contact surface 122 of the third to third tape guide pins 111 to 113 contacts the edge 123 of the opening of the first to third pin planting guide holes 119 to 121. When the three tape guide pins 111 to 113 are pressed by a press, a so-called longitudinal scratch is generated on the tape contact surface 122 by the edge 123.

(2) If a scratch occurs on the tape contact surface of the tape guide pin, the scratch may damage the magnetic tape, causing a hard error or the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and to provide a tape guide pin implanting die capable of implanting these pins on a base plate without making a vertical scratch on the tape contact surface of the tape guide pins. It was done for the purpose.

Means for Solving the Problems According to the present invention, one end side is pressed by a press machine and a base plate of a tape cartridge on which a tape guide pin is implanted by the press machine. In a tape guide pin setting die of a tape cartridge provided with a pin setting guide hole for guiding a tape guide pin on a pin guide surface on an inner peripheral side and setting the tape guide pin at a predetermined position of the base plate. A pin guide surface of the pin planting guide hole at a position corresponding to the tape contact surface of the tape guide pin guided at the time of pressing by the pin planting guide hole, and keeping the non-contact state with the tape guide pin at the time of pressing; Formed on non-contact surface.

[Operation] The tape non-contact surface keeps the tape contact surface of the tape guide pin and the pin guide surface of the pin implantation guide hole in a non-contact state at all times, and accordingly, the tape contact surface of the tape guide pin. It is possible to reliably prevent the occurrence of vertical scratches at the time of pressing caused by the contact between the pin guide surface and the pin guide surface of the pin implantation guide hole.

Embodiment Next, the present invention will be described with reference to FIGS.

1 and 2 show a tape guide pin implantation mold 1 of the present invention.
1st, 2nd, 3rd tape guide pins 3, 4, 5 ...
The first, second, and third tape guide pins 3, 4, 5,..., Whose upper ends are pressed by the press machine 2, are interposed between the tape cartridge shown in FIG. The first, second and third guides for guiding the first, second, and third tape guide pins 3, 4, and 5 at predetermined positions of the base plate 6 by guiding the tape guide pins on the inner circumference of the tape guide surface. It has three-pin planting guide holes 7, 8, 9,....

The mold 1 is formed in a rectangular shape, and its four corners are supported on a base plate 11 by leg pieces 10.
The base plate 6 is positioned and mounted on 11.

The first, second, and third pin planting guide holes 7, 8, 9 are the first, second, and third pin implantation guide holes, respectively.
The second and third tape guide pins 3, 4, 5 are formed in a round hole shape with a diameter slightly larger than the diameter thereof, and a portion in the circumferential direction is a pin non-contact surface having a diameter larger than other portions. It is 12.

The pin non-contact surfaces 12 of the first, second, and third pin implantation guide holes 7, 8, and 9 are located at the positions of the tape contact surfaces 13 of the first, second, and third tape guide pins shown in FIG. Is formed at a position corresponding to.

In other words, as shown in FIG. 3, the non-pin contact surface of the first pin planting guide hole 7 is approximately 88 ° in accordance with (corresponding to) the tape wrap angle of the tape contact surface of the first tape guide pin 3. It is formed at the spread angle θ.

Also, the pin non-contact surface 12 of the third pin setting guide hole 9 is
As shown in the drawing, the third tape guide pin 5 is formed to have a spread angle θ of about 75 ° in accordance with the tape wrap angle of the tape contact surface of the third tape guide pin 5.

Although not shown, the pin non-contact surface 12 of the second pin setting guide hole 8 is also formed at a predetermined spread angle in accordance with the tape wrap angle of the tape contact surface of the second tape guide pin 4.

Since the tape guide pin planting die 1 of the embodiment has the above-described configuration, the tape cartridge base plate 6 is positioned and mounted on the base plate 11, and the first, second, and third pin planting are performed. The first, second and third tape guide pins 3 are inserted into the guide holes 7, 8 and 9,
If the first, second, and third tape guide pins 3, 4, and 5 are sequentially pressed by the press machine 2 while inserting
2, the third pin setting guide holes 7, 8 and 9 are set at predetermined positions on the base plate 6 while being guided.

At the time of the pressing, the first, second, and third pin planting guide holes 7, 8, 9 are provided with the first, first,
Since the second and third tape guide pins are kept in a non-contact state with the mold, the occurrence of vertical scratches due to interference between the two at the time of pressing is reliably prevented, and a tape guide pin having no vertical scratches on the tape contact surface is formed. Planting becomes possible.

[Effects of the Invention] As described above, in the tape guide pin planting die of the present invention, the pin planting at a position corresponding to the tape contact surface of the tape guide pin guided by the pin planting guide hole. Since the pin guide surface on the inner periphery of the guide hole is formed with a pin non-contact surface which keeps a non-contact state with the tape guide pin at the time of pressing, the following effects are obtained.

(1) It is possible to reliably prevent the tape non-contact surface from causing a vertical scratch on the tape contact surface due to interference (engagement) between the tape guide pin and the tape guide pin planting mold during pressing.

(2) It is possible to prevent damage to the magnetic tape, hard errors, and the like caused by vertical scratches on the tape contact surface.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tape guide pin implantation mold of the present invention,
FIG. 2 is a cross-sectional view, FIGS. 3 and 4 are plan views of essential parts, FIG. 5 is an exploded perspective view of a tape cartridge as an external recording device of a computer, FIG. 7
The figure is a cross-sectional view showing a problem of the conventional example. 1 ………………………………………………………………………………………………… ···
4,5 ... first, second, third tape guide pins, 6 ... base plate, 7,8,9 ... first, second, third pin planting guide holes, 1
2 ... Pin non-contact surface.

Claims (1)

(57) [Claims] 1. A tape guide pin which is interposed between a press machine and a base plate of a tape cartridge on which a tape guide pin is implanted by the press machine and whose one end side is pressed by the press machine is connected to an inner peripheral side. A pin setting guide hole for guiding the tape guide pin at a predetermined position of the base plate by guiding the tape guide pin at a predetermined position on the base plate, wherein the tape contact of the tape guide pin guided by the pin setting guide hole; A pin guide surface of a pin guide guide hole of a tape cartridge, wherein a pin guide surface of a pin guide guide hole at a position corresponding to the surface is formed on a pin non-contact surface which maintains a non-contact state with the tape guide pin during pressing. .