JPH01158684A - Method for assembling magnetic disk - Google Patents

Abstract

PURPOSE:To improve operability, to easily concentrically operate the adhering tape of a magnetic disk and a center hub and to improve a quality by using a holder having three claw pieces capable of radially opening/closing and automatically assembling the magnetic disk for adhering the center hub to the magnetic disk through a both-face adhering tape. CONSTITUTION:At the time of assembling the magnetic disk 1, the hub 2 sup plied to the supply position 12 of the center hub 2 as a terminal part 12 by a parts supplying device is detected by a sensor 13 and one holder 24 is lowered with the claw piece 27 closed to the hub 2 of the position 12. This claw piece 27 is pressed to the internal wall of the protrusion 2a at the center of a cap form hub 2 to internally hold the hub 2 by the craw piece 27. Then, the holder 24 is raised and moved to the upper part of the supply device 16 of the both-face bonding tape 5. The positioning rod 17 of the supply device 16 is elevated to fit an upper end part into removing base 5, followed by positioning of the both- face bonding tape 5 and adhesion.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Field of Application) In manufacturing a magnetic disk car 1-ridge of a hard case type micro-floppy disk, for example, the central part of the magnetic disk is This invention relates to a magnetic disk assembly method in which a center hub is attached to a through hole using a circular double-sided adhesive tape.

(Prior Art) For example, in a magnetic disk cartridge such as a hard case type micro-floppy disk, a metal hat-shaped center hub is inserted into a circular hole 1a in the center of the magnetic disk 1, as shown in FIG. 2 is attached and rotatably stored in a synthetic resin cartridge (not shown), and the center hub 2 is exposed through the circular opening in the center of the cartridge. It faces the opening and is covered with a shutter (not shown) provided in the opening so that it can be opened and closed.

When manufacturing such magnetic disk cartridges,
When inserting the center hub 2 into the through hole 1a of the magnetic disk 1, as shown in FIG.
The central protrusion 2a is placed over the protrusion 3a of the assembly jig 3, and is attached to the flange portion 2b around the center hub 2 around the numerous circular through holes 4a of the ribbon-shaped release mount 4. Place one of the annular double-sided adhesive tapes 5 and apply pressure from above the release mount 4 to adhere the double-sided adhesive tape 5 to the flange portion 2b.After this, when the release mount 4 is pulled off, the double-sided adhesive tape 5
is left on the flange portion 2b of the center hub 2, and then,
As shown in FIG. 9, the flange portion 2b of the center hub 2
When the edge of the through hole 1a of the magnetic disk 1 is placed on the double-sided adhesive tape 5 left behind on the double-sided adhesive tape 5 and pressure is applied from above to adhere the edge of the through hole 1a of the magnetic disk 1 to the double-sided adhesive tape 5, the magnetic disk 1 The center hub 2 can be attached to the through hole 1a via the double-sided adhesive tape 5, and this assembly work has been done entirely by hand.

(Problem that the invention attempts to solve) The conventional assembly method described above has the following problems.

■ The assembly jig 3 used for positioning the center hub 2,
Because it needs to be made according to the dimensions of center hub 2,
Dedicated assembly jigs 3 are required for center hubs 2 of different dimensions.

(2) Since the double-sided adhesive tape 5 is positioned with respect to the center hub 2 by alignment, the center hub 2 and the double-sided adhesive tape 5 are concentrically arranged and eccentric.

■ The pressure applied when adhering the magnetic disk 1 to the center hub 2 is also done manually, so the adhesion force is not stable and the electromagnetic characteristics of the magnetic disk 1 are adversely affected.

■ Manual assembly using the assembly jig 3 takes time.

The present invention was made in view of these points, and is capable of holding center hubs of different sizes, and
When holding the center hub, a holding device capable of centering and positioning the center hub is used to automatically attach the center hub to the through hole of the magnetic disk via double-sided adhesive tape.

(Structure of the Invention) (Means for Solving the Problems) The present invention relates to a magnetic disk assembly method for attaching a center hub to a through hole in the center of the magnetic disk via a circular double-sided adhesive tape. , using a holding device having at least three claws that can be opened and closed radially, holding the center hub by the plurality of claws of the holding device at the feeding position of the center hub, and holding the center hub by the plurality of claws of the holding device; A first step that transports the center hub from the center hub supply position to the double-sided adhesive tape supply position by moving the holding device, and press-bonds the peripheral portion of the center hub held by the plurality of claws of the holding device to the double-sided adhesive tape. The center hub to which the double-sided adhesive tape is adhered is held by the plurality of claws of the holding device, and the center hub held by the plurality of claws of the holding device is moved to the magnetic disk. A second adhesion step is provided in which the double-sided adhesive tape is conveyed to the supply position and adhered to the center hub held by the plurality of claws of the holding device, and is pressed onto the edge of the through hole of the magnetic disk.

(Function) The method for assembling a magnetic disk of the present invention is different in that when the center hub is held by the holding device at the supply position of the center hub, at least three claw pieces open and close radially to hold the center hub. In addition to being able to hold the center hub of the same dimensions, the center hub can be centered and positioned during this holding,
By moving the holding device, the center hub can be transported from the center hub supply position to the double-sided adhesive tape supply position, and the periphery of the center hub can be pressed and bonded to the double-sided adhesive tape. Furthermore, the center hub with the double-sided adhesive tape adhered to it is held by a holding device, and by moving the holding device, the center hub is conveyed to the magnetic disk supply position, and the double-sided adhesive tape adhered to the center hub is transported as it is. It can be pressed to the edge of the through hole of the magnetic disk for tI%f.

(Embodiment) An embodiment of the magnetic disk assembly method of the present invention will be described with reference to FIGS. 1 to 6.

In FIG. 1, reference numeral 11 denotes a terminal portion of a component supply device, and the terminal portion 11 of this component supply device is disposed at a supply position 12 of the center hub 2, and a large number of parts shown in FIGS. The center hubs 2 shown in the figure are supplied in order, and the center hub 2 is supplied to this supply position @12.
A sensor 13 is provided to detect the arrival of the vehicle.

A supply position 16 for the double-sided adhesive tape 5 is set adjacent to the supply position 12 of the center hub 2, and a number of double-sided adhesive tapes 5 shown in FIG. The mount 4 is conveyed intermittently and sequentially at the pitch of the through holes 4a, and this supply position 1
6 is provided with a positioning rod 17 whose upper end is shaped like a truncated cone so as to be movable up and down from below.

A supply position 20 for the magnetic disk 1 is set in front of the supply position 16 for the double-sided adhesive tape 5 in the conveyance direction of the release liner 4, and a component supply device (not shown) is disposed at this supply position 20. A large number of magnetic disks 1 shown in FIGS. 7 and 9 are sequentially supplied to a supply position 20 by a component supply device, and a magnetic disk 1 having a truncated conical upper end is supplied to this supply position 20. A positioning rod 21 is provided so as to be movable up and down from below.

Further, 24.25 are both holding devices, and these two holding devices 24.25 are arranged radially at the bottom of the main body 26.
One holding device 24 has three claw pieces 27 that can be reclosed.
is attached to a conveyance device (not shown), and is horizontally movable by this conveyance device to a position above the supply position 12 of the center hub 2 and a position above the supply position 16 of the double-sided adhesive tape 5. It can be raised and lowered from above with respect to the supply position 12 and the supply position 16 of the double-sided adhesive tape 5, and the other holding device 25 is attached to a separate conveyance device (not shown), and this conveyance device transports the double-sided adhesive tape 5. It is horizontally movable to a position above the supply position 16 of the double-sided adhesive tape 5 in front of the supply position 16 of the double-sided adhesive tape 5 and a position further ahead of the supply position 20 of the magnetic disk 1, magnetic disk 1
The supply position 20 can be raised and lowered from above.

As shown in FIGS. 2 and 3, the holding device 24, 25 has a main body 26 that is a cylinder and has a piston 31 therein. When air is introduced into the upper part of the piston 31, the piston 31 is lowered, and when air is introduced into the lower part of the piston 31 from the boat 26b formed at the lower part of one side of the main body 26, the piston 31 is raised. A rod 31a is integrally protruded from the lower part, and a recess 31b is formed on the outer periphery of the rod 31a.
One end of three doglegged arms 33 supported horizontally rotatably through the
The claw pieces 27 are respectively engaged with the other ends of the main body 2.
6, so that when the piston 31 is lowered, the three claw pieces 27 open synchronously, and when the piston 31 is lowered, the three claw pieces 27 are synchronously closed. .

Then, when assembling the magnetic disk 1, when the sensor 13 detects the center hub 2 supplied by the component supply device to the terminal portion 11, that is, the supply position 12 of the center hub 2, the center hub 2 at the supply position 12 is Meanwhile, one of the holding devices 24 descends with its three claw pieces 27 closed, and the claw pieces 27 enter inside the protrusion 2a at the center of the hat-shaped center hub 2, as shown in FIG. In this state, the claw pieces 27 are pressed against the inner wall of the protrusion 2a of the center hub 2, whereby the center hub 2 is held from the inside by the three claw pieces 27, and then the holding device 24 is raised and both sides are held together. The adhesive tape 5 is moved horizontally above the supply position 16.

Here, when holding the center hub 2, even if the centers of the three claw pieces 27 and the center hub 2 are misaligned before holding as shown in FIG. The centers of the two claw pieces 27 and the center hub 2 coincide, and the center hub 2 can be centered and positioned.

In addition, in the supply image @16 of the double-sided adhesive tape 5, the positioning rod 17 rises and the upper end of the truncated cone forms the peeling mount 4.
After fitting into the through hole 4a of the release mount 4 and thereby positioning the double-sided adhesive tape 5 stuck around the through hole 4a of the release mount 4, the positioning rod 17 is lowered.

Then, the holding device 24 that holds the center hub 2 is lowered with respect to the double-sided adhesive tape 5 after this positioning, and the protrusion 2a of the center hub 2 is fitted into the through hole 4a of the release mount 40, and the center hub 2 The flange portion 2b is pressed and adhered to the double-sided adhesive tape 5, and then the holding device 24
The three claw pieces 27 close, and as a result, the center hub 2 is released and left on the peeling mount 4, and then, after the holding device 24 is raised, the peeling mount 4 is removed by the pitch of the through hole 4a. Advance.

The holding device 24 horizontally moves above the supply position 12 of the center hub 2, repeats the above operation, holds the subsequently supplied center hub 2, and sequentially feeds it to the supply position 16 of the double-sided adhesive tape 5. It is adhered to the double-sided adhesive tape 5 being conveyed.

Then, when the center hub 2 adhered to the double-sided adhesive tape 5 on the release mount 4 is conveyed to a predetermined position in front of the supply position 16 of the double-sided adhesive tape 5, the center hub 2 at this position
In contrast, the other holding device 25 descends with its three claw pieces 27 closed, and the claw pieces 27 enter inside the protrusion 2a at the center of the hat-shaped center hub 2, as shown in FIG. In this state, the claw pieces 27 open and come into pressure contact with the inner wall of the protrusion 2a of the center hub 2, whereby the center hub 2 is held from the inside by the three claw pieces 27, and then the holding device 25 is raised and held. , the double-sided adhesive tape 5 is attached to the center hub 2.
The magnetic disk 1 reaches the flange portion 2b and is peeled off from the release mount 4, and then the holding device 25 moves horizontally above the supply position 20 of the magnetic disk 1.

Here, when holding the center hub 2, even if the centers of the three claw pieces 27 and the center hub 2 are misaligned before holding as shown in FIG. The centers of the two claw pieces 27 and the center hub 2 coincide, and the center hub 2 can be centered and positioned.

Further, at the supply position 20 of the magnetic disk 1, when the magnetic disk 1 is supplied by a component supply device (not shown), the positioning rod 21 is raised and the upper end of the truncated cone is inserted into the through hole 1a of the magnetic disk 1. After fitting and thereby positioning the magnetic disk 1, the positioning rod 21 is lowered.

Then, the holding device 25 holding the center hub 2 with the double-sided adhesive tape 5 adhered to the magnetic disk 1 after this positioning is lowered, and the protrusion 2 atf of the center hub 2 is lowered.
i Fits into the through hole 1a of the magnetic disk 1, and the flange portion 2b of the center hub 2 is pressed to the edge of the through hole 1a of the magnetic disk 1 via the double-sided adhesive tape 5, whereby the double-sided adhesive tape 5 is the through hole 1a of the magnetic disk 1
At the same time, the flange portion 2b of the center hub 2 is attached to the magnetic disk 1 via this double-sided adhesive tape 5.
3 of the holding device 25.
The two pawls 27 close, thereby releasing the center hub 2 and leaving it on the magnetic disk 1, and then, after the holding device 25 has been raised, the magnetic disk 1 glued to the center hub 2 is removed from its feeding position 20. It will be carried out.

Note that the holding device 25 is located at the supply position 16 of the double-sided adhesive tape 5.
The center hub 2 adhered to the double-sided adhesive tape 5 on the release liner 4 that is subsequently conveyed is held by the center hub 2 and moved horizontally above a predetermined position in front of the magnetic disk 1, and the above operation is repeated to hold the center hub 2 adhered to the double-sided adhesive tape 5 on the peeling mount 4 that is being conveyed, and move the magnetic disk 1 to the supply position 20. The magnetic disks 1 are bonded to the magnetic disks 1 that are sequentially supplied to the disks.

As described above, since the work of adhering the center hub 2 to the magnetic disk 1 via the double-sided adhesive tape 5 can be performed automatically using the holding devices 24 and 25, the work is done quickly and productivity is improved. When the center hub 2 is held by the holding devices 24 and 25, the center hub 2 is centered and positioned, so that the concentricity of the magnetic disk 1, the double-sided adhesive tape 5, and the center hub 2 can be easily obtained. Since the pressure applied during adhesion is also stable, the quality of the product is improved and stabilized.

In addition, since the center hub 2 is held by the holding device 24, 25 by opening and closing the three claw pieces 27 in a radial manner, it can be used as is for center hubs 2 of different diameters, and can be used as is for center hubs 2 of different sizes. against the holding device 24
．． No need to replace 25.

In this embodiment, separate holding devices 24 and 25 are used for adhering the center hub 2 and the double-sided adhesive tape 5 and for adhering the center hub 2 and the magnetic disk 1, but it is also possible to use a single holding device for this purpose. can.

In addition, regarding how to use the holding device 24, 25, in this embodiment, after inserting the three claw pieces 27 inside the protrusion 2a of the center hub 2 in a closed state, Although the inner periphery is held in pressure contact, it is also possible to use the three claw pieces 27 to hold the outer periphery by positioning them on the outside of the protrusion 2a of the center hub 2 in an open state, and then closing them and bringing them into pressure contact with the outside of the protrusion 12a. can.

〔Effect of the invention〕

As described above, according to the present invention, a holding device having at least three claws that can be opened and closed radially is used to automatically assemble a magnetic disk in which a center hub is attached to the magnetic disk via double-sided adhesive tape. When holding the center hub in the holding device, the center hub is centered and positioned, so the magnetic disk, double-sided adhesive tape and center It is easy to obtain concentricity of the hub, and the pressure applied during adhesion is also stable, which improves the quality of the product and makes it stable.The center hub is held by the holding device using the radial alignment of at least three claws. Since this is done by opening and closing, it can be used with center hubs of different diameters, and can be held for center hubs of different dimensions! ! There is no need to replace the A position.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an outline of an apparatus for carrying out the magnetic disk assembly method of the present invention, FIGS. 2 and 3 are a front view and a bottom view with a part of the holding device in section, and FIG. 4 6 to 6 are cross-sectional views showing how the holding device is used,
FIG. 7 is a plan view of a magnetic disk with a center hub attached, and FIGS. 8 and 9 are a perspective view and a sectional view showing a conventional method of assembling a magnetic disk. 1...Magnetic disk, 1a...Through hole, 2...Center hub, 5...Double-sided adhesive tape, 12...Center hub 2 supply position, 16...Double-sided adhesive tape 5 supply position, 20
...Magnetic disk 1 supply position, 24, 25...Holding 5
Place A, 27...Claw piece. 〆■2S many! J

Claims (1)

[Claims] (1) A method for assembling a magnetic disk in which a center hub is attached to a through hole in the center of the magnetic disk via a circular double-sided adhesive tape, using a holding device having at least three claws that can be opened and closed radially; At the supply position of the center hub, the center hub is held by the plurality of claws of the holding device, and the center hub held by the plurality of claws of the holding device is moved from the supply position of the center hub to the above-mentioned double-sided bonding. a first adhesion step of transporting the tape to a tape supply position and press-bonding the peripheral portion of the center hub held by the plurality of claws of the holding device to the double-sided adhesive tape; The center hub is held by a plurality of claws of the holding device, and the center hub is transported to the supply position of the magnetic disk by the movement of the holding device, and the center hub is held by the plurality of claws of the holding device. a second adhesion step of pressing the double-sided adhesive tape adhered to the edge of the through hole of the magnetic disk.