JPS604300Y2 - Loading mechanism - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a loading mechanism that pulls out a tape from a cassette and mounts the tape on the circumferential surface of a guide cylinder.

Loading mechanisms that move the guide means in both directions with respect to the guide cylinder to load the tape include a method in which the guide means is moved by a complicated combination of levers, and a method in which the guide means is moved by a complicated combination of levers, and a method in which the guide means is moved in two directions with different rotational directions. A method of disposing a guide means on an arc-shaped support guide body and moving it has been widely used.
The latter has a simpler structure, fewer failures, and more stable operation than the former, but the special shape of the support requires more molding control and increases the total cost.

The present invention was developed in view of the above-mentioned points, and utilizes a disk-shaped loading disk that is easy to mold and a linear rack plate as the supports, and drives both by the same driving means. It is intended as a transportation guide.

The present invention will be described below with reference to an illustrative embodiment.

FIG. 1 is a plan view of the mechanism of this embodiment with the upper substrate removed, and FIG. 2 is a right side view of the same.

In the figure, reference number 1 is a guide cylinder arranged at a predetermined angle with respect to the substrate, 2 is a tape cassette indicated by a dashed line, and 3 is a first upright guide 3a located within the left notch 2a of the cassette 2; A first support block 4 supports the first inclined guide 3b, and 4 is the left notch 2b of the cassette 2.
a second upright guide 4a and a second inclined guide 4b located at
5 is a loading disk that rotates with the first support block 3 disposed thereon; 6 is a rack plate that moves linearly with the second support block 4 disposed thereon; 7 is a loading disk that rotates with the first support block 3 disposed thereon; 1 Support block 3 is placed and fixed through the elongated hole 7av.
A first loading lever 8 is pulled and biased by a first spring 7b in the loading direction by fitting the planting pins 5a, 5a of the loading disk into the second support block 4.
Place and fix the pins 5a on the rack board in the long holes 8a, 8a.

The fifth loading lever 9 is moved from the illustrated position to the dotted line position in conjunction with the loading start operation and the unloading end operation of the loading disk 5. Or conversely, a tape pull-out lever 10 rotates the tape pull-out pin 9a, and 10 is a small diameter gear 10a that meshes with the gear portion 6b on the right side of the rack plate 6, and a large diameter gear 10a that meshes with the gear portion on the inner circumference of the loading disk 5. A loading gear integrally molded with a medium diameter gear 10c that meshes with the gear 10b and the intermediate gear 11, 12 a drive motor that rotates the drive gear 13 that meshes with the intermediate gear 11, and 14 the first spring 7b upon completion of loading. Due to the biasing force, the first upright guide 3a is moved into the V-shaped notch 14a and the first support block 3
A first locking block 15 is brought into contact with a protrusion 14b which can be freely adjusted forward and backward in the conical notch 3c of the block 15 to position both guides 13a and 13b. A second lock for positioning both guides 4a and 4b by bringing the second upright guide 4a into contact with the V-shaped notch 15a and the conical notch 4c of the second support block 4 with a protrusion 15b that can be adjusted forward and backward. block, 16
, 16 and 16 represent pulleys supporting the loading disc 5, respectively.

Therefore, according to this embodiment, when the drive motor 12 starts rotating during loading after the cassette is attached, the loading gear 10 is driven clockwise via the drive gear 13 and the intermediate gear 11.

Therefore, the loading gear 10 causes the rack plate 6 to slide at a slow speed in the direction of arrow A in the figure, and also rotates the loading disk 5 clockwise at a high speed.

As the rack plate 6 slides, the two guides 4ay4b on the second support block 4 move in the direction of arrow A while pulling out the tape, thereby winding the tape around one of the guide cylinders 1, Before the sliding of the rack plate 6 is completed, the second support block 4 is attached to the second locking block 15.
When the sliding is completed, the conical notch 4C is brought into contact with the protrusion 15b, and the second conical notch 4C is brought into contact with the V-shaped notch 15a.
Both guides 4a are pressed against each other by pressing the upright guides 4a,
4b, the rack plate 4 is slid extra with respect to the second mounting lever 8, and the second mounting lever 8 is positioned.
At step b, the positioning lever 8 is pulled toward the second locking block 15.

On the other hand, when the loading disk 5 rotates, it first moves the tape pull-out pin 9a to the outside of the cassette 2 and connects the two guides 3a and 3b on the first support block 3.
is moved along the loading disk 5, a tape is wound around the other peripheral surface of the guide cylinder 1, and before the rotation of the loading disk 5 is completed, the first support block 3 is moved to the first locking block 14. abut the
After the rotation is completed, in the same manner as the second support block 3, the first upright guide 3a is pressed against the V-shaped notch 14a, and the conical notch 3c is pressed against the protrusion 14b, and both guides 3m and 3b are pressed together. Positioning is being carried out.

Therefore, when loading is completed, the tape is pulled out from the cassette, guided by the tape pull-out pin 9a, fixed head 17, impedance roller (not shown), etc., and guided to the first upright guide 3a, and then the tape is guided to the first upright guide 3a. The inclination angle of the tape is changed by the guide 3b, and the tape is circumferentially guided around the inclined guide cylinder 1.

The tape led out from the guide cylinder 1 is
The inclination angle of the tape is corrected by the inclination guide 4b, and the tape is guided by the second upright guide 4a, an impedance roller (not shown) fixed head 18, a pinch roller 19, a capstan 20, etc., and wound into a cassette.

Therefore, the stability of tape running is maintained, and an inexpensive and compact loading mechanism can be obtained, which is highly effective.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an embodiment of the present invention, and FIG. 2 is a right side view of the same. 4...Rack plate, 5...Loading disk, 10...Loading gear, 3a,
3b, 4a*4b...Guide.

Claims (1)

[Scope of utility model registration request] first and second guide means located within the notch of the cassette;
A loading disk for guiding the first guide means in an arc, a rack plate for linearly guiding the second guide means, and a loading gear that meshes with the rack plate and the loading disk. loading mechanism.