JPH06282961A - Method and device for supplying flexible disks - Google Patents

Abstract

PURPOSE:To surely suck and detach disks by sucking the external part of their sheets to be lifted from the internal side and detaching one by one by jetting compressed air to the lowermost surface. CONSTITUTION:A vacuum sucking head 31c is lowered to fit a projecting part 32 into a center core 3. Air is taken in from an air intake hole 33, and compressed air is jetted from a jetting hole 46. The magnetic sheet 4 is sucked along the inclination of an end part of a projecting part 35 by air intake of the hole 33, and a gap with a sheet 4 of a magnetic disk on the lower side of the aforesaid sheet is expanded in accordance with the inclined angle, and also the whole disk is sucked by vacuum to the end surface of the head 31c. Since the compressed air is jetted from the hole 46 at the same time that the uppermost disk is sucked by vacuum, pushing-up force is acted on the uppermost disk, while pushing-down force is acted on the lower disk. Consequently, although the uppermost disk is lifted, the lower disk is never lifted by negative pressure. Thus, the disks are surely detached and sucked one by one, and are rapidly transferred.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for supplying a flexible disk such as a magnetic disk housed in a magnetic disk cartridge.

[0002]

2. Description of the Related Art FIG. 4 shows the structure of a conventional magnetic disk cartridge 1, which includes an upper shell 2a and a lower shell 2.
It has a structure in which the magnetic sheet 4 attached to the chucking center core 3 is rotatably accommodated between it and b. A method for manufacturing such a magnetic disk cartridge is disclosed in, for example, Japanese Patent Laid-Open No. 15478/1990. FIG. 5 shows a main part of the manufacturing process of the magnetic disk cartridge 1, and the assembling line 11 conveys the lower shell 2b from the front side to the back direction, for example. From the assembly line (not shown) to the magnetic sheet supply unit 14,
A magnetic disk 16 configured by inserting the center core 3 into the central hole 4a of the magnetic sheet 4 and adhering the magnetic sheet 4 to the flange 3a of the center core 3 is supplied.

The assembling oscillating handler 17 is for stocking the magnetic disk 16 in the buffer 18 and for carrying it to the assembling line 11, and the double arms 17a, 17b formed in a plane V shape are provided inside the double arms 17a, 17b. A magnetic attraction head 17c is provided so as to be vertically movable. When the magnetic disk 16 is conveyed, the suction head 17c is lowered to suck and raise the center core 3, and when the suction is released, the suction head 17c is raised. As a result, the center core 3 comes into contact with the lower ends of the double arms 17a and 17b and cannot be lifted, but the suction head 17c is lifted, so that both are forcibly separated and the suction is released.

The buffer 18 is used for stocking the magnetic disks 16 in accordance with the state of transportation of the assembly line 11, and has an upright rod portion 20, an elevator 21, and a ball screw 22 for driving the elevator 21 up and down, It is composed of a pulse motor 23 and the like. The stock of the magnetic disk 16 is the center positioning hole 3 of the center core 3.
This is performed by inserting the rod-shaped portion 20 into b and stacking a plurality of magnetic disks 16 in the vertical direction. Then, the elevator 21 changes the stacking space according to the loading amount so that the magnetic disk 16 stacked on the uppermost one of the stacked magnetic disks 16 is always located at a constant vertical position. According to such a configuration, the magnetic disk 16 can be removed when the built-in line 11 is transported, for example, when the built-in line 11 is stopped, or when the flow of the shell 2b is interrupted and a so-called tooth missing state occurs. It can be stocked temporarily. In recent years, instead of the configuration in which the magnetic force of a magnet is used to attract the center core 3 in the above configuration, a configuration in which the center core 3 is attracted to convey a magnetic disk by using a suction force of a vacuum pump is adopted. . According to this configuration, since there is no movable part such as a magnet type attraction head, the configuration is not complicated, and attraction and release of the magnetic disk can be easily controlled only by controlling the opening / closing valve of the attraction path.

[0005]

However, since the magnetic disk 16 is attracted to the center core 3 formed of a metal plate by utilizing the attraction force of a vacuum pump, the surface roughness of both the attraction surface and the center core 3 is reduced. If the suction surface and the center core 3 do not come into close contact with each other due to the influence of
The attraction force at that portion may be significantly lower than that at other portions, and the entire magnetic disk 16 may be attracted in an inclined state. In this case, the magnetic disk 16 may not be able to be accurately placed at a predetermined position on the lower shell 2b, and in extreme cases, an unexpected accident such as dropping on the way due to insufficient suction may occur.
If a plurality of magnetic disks 16 are stacked,
When the uppermost magnetic sheet 4 is lifted, a negative pressure is generated between the uppermost magnetic sheet 4 and the magnetic sheet 4 of the magnetic disk 15 therebelow, and the second magnetic disk 16 is overlapped and lifted. was there. An object of the present invention is to provide a flexible disk supply method and device for surely attracting and transporting stacked magnetic disks one by one.

[0006]

[Means for Solving the Problems]

(1) The object according to the present invention is that when a magnetic disk having a magnetic sheet attached to a center core is conveyed, the magnetic sheet is directed radially inward along the inclination angle of the adsorption surface of the adsorption head. While adsorbing in a state of being deformed so as to rise further, compressed air is jetted to the lower surface of the adsorbed magnetic disk to promote separation from other magnetic disks stacked under the magnetic disk. It is achieved by the flexible disk supply method. (2) The object of the present invention is to attach the magnetic disk between a means for forming a magnetic disk by attaching a magnetic sheet to a center core and a means for housing the magnetic disk in a shell. In a magnetic disk cartridge manufacturing apparatus including a suction head for transporting and a buffer having a rod-shaped body through which the magnetic disk is inserted and temporarily storing one or more magnetic disks, a suction surface of the magnetic sheet of the suction head is downward. An intake hole is formed in an annular convex portion that faces toward, and is a taper surface that rises outward in the radial direction, and the uppermost magnetic disk of the accumulated magnetic disks and the magnetic disk stacked below it This is achieved by a flexible disk supply device characterized in that an injection hole for injecting compressed air is provided in the portion of the rod-shaped body corresponding to the space.

[0007]

That is, the magnetic sheet of the uppermost magnetic disk among the accumulated magnetic disks is deformed according to the inclination angle of the adsorption surface of the vacuum adsorption head by being adsorbed by the vacuum adsorption head, and is accumulated below it. Since the gap between the magnetic sheet and the magnetic sheet of the magnetic disk is expanded, a suction force due to a negative pressure is not generated between the magnetic sheets when the magnetic sheet is lifted. Further, since compressed air is ejected from the ejection holes of the disk accumulating rod between the uppermost magnetic disk and the magnetic disk laminated thereunder, a lifting force acts on the uppermost magnetic disk. At the same time, a pressing force acts on the magnetic disk below it. Therefore, when the uppermost magnetic disk is vacuum-adsorbed and conveyed, the negative pressure is not generated and the separation between the uppermost magnetic disk and the magnetic disk below the magnetic disk is promoted, and the adsorption is further ensured. Will be done.

[0008]

EXAMPLE An example of the present invention will be described below with reference to FIGS. FIG. 1 is a basic configuration diagram of an embedded oscillating handler and a buffer, FIG. 2 is an enlarged explanatory diagram of a main part, and FIG. 3 is a configuration diagram of a manufacturing apparatus. In the description of the embodiments, the configuration of the manufacturing apparatus will be described in order to facilitate understanding of the invention, and then the configuration and operation of essential parts will be described. In the magnetic disk cartridge 1, as described with reference to FIG. 4, the center sheet 3 having the flange 3a is fitted and adhered to the magnetic sheet 4 having the central circular hole 4a, and the pair of upper and lower shells 2 are attached.
It is stored between a and 2b. Such a magnetic disk cartridge 1 is manufactured by the manufacturing apparatus M as shown in FIG. The structure of the manufacturing apparatus M is roughly divided into a sticking line 10, an assembling line 11, an assembling oscillator handler 31, a buffer 41 and the like. The sticking line 10 is provided with an adhesive application section 12 and applies an adhesive to the flange 3 a of the center core 3. The center core 3 is supplied to the adhesive application section 12 of the sticking line 10 at regular intervals regardless of the operating status of the incorporating line 11.

There are two types of adhesives, a heat-sensitive adhesive type and a room temperature adhesive type, and the adhesive strength is a shear strength of 0.8 kg of the double-sided adhesive tape.
(Tensile speed of 50 mm / sec, normal temperature) 2 to 5 times higher. The room temperature pressure-sensitive adhesive is an adhesive that does not require a heat retention step after coating and drying, and the heat-sensitive adhesive is an adhesive that requires a heat retention step after coating and drying. As a method of applying the adhesive, it is suitable to use a syringe-type dispenser and apply about 5 mg of the adhesive while rotating the center core 3.

The center core 3 coated with the adhesive is conveyed in the direction of the arrow A on the sticking line 10 and passes through the drying oven 13. The drying furnace 13 is configured to blow hot air of 80 ° C. to 100 ° C. onto the center core 3 being conveyed, and the adhesive is dried in about 40 seconds. The heat-curable adhesive requires hot air at around 120 ° C, but other adhesives are dried at a relatively low temperature (80 ° C to 100 ° C) depending on their components. When it is necessary to invert the center core 3 during drying, a drying furnace configured to be reversible is applied. Since a heat-sensitive adhesive is used in this embodiment, a heater 13a for keeping the center core 3 warm is provided downstream of the drying furnace 13. And the heater 13a
The center cores 3 that have been heated to a certain position while being kept warm by are adsorbed by the sticking oscillating handler 15 and are transferred to the magnetic sheet supply unit 14 one by one.

The oscillating handler 15 has a suction portion 15a.
And an arm 15b that supports it. The attracting portion 15a is configured to move a magnet up and down in a cylinder, and the arm 15b is configured to reciprocate in a direction indicated by an arrow C. In addition, a heater (not shown) is provided in the vicinity of the adsorption portion 15a to enhance the heat retention effect. When the center core 3 is conveyed, the magnet in the cylinder is moved downward to attract the center core 3 to the lower end, and the arm 15b is rotated to convey the center core 3 to a predetermined position on the magnetic sheet supply unit 14 and then the magnet is moved upward. . As a result, the center core 3 is caught on the lower end of the cylindrical body and is separated from the magnet. During the transportation, the center core 3 is kept heated by the heater. The magnetic sheet 4 is supplied on the magnetic sheet supply unit 14, and the center core 3 is fitted into the central circular hole 4a of the magnetic sheet 4 when the magnetic core 4 is detached, and the center core 3 is heat-heated and heat-bonded through an adhesive having a sufficient adhesive force. It is attached to the magnetic sheet 4.

The arm 15 after the center core 3 is removed
b returns to the drying furnace 13 side again and prepares for the next suction conveyance of the center core 3. In addition, when the bonding is performed using a room temperature adhesive type adhesive, the above-mentioned heat retaining and heating step is not necessary. In this way, the center core 3 and the magnetic sheet 4 are attached to each other to obtain a magnetic disk 16, which is temporarily stored in the buffer 41 via the built-in oscillator handler 31 having the double arms 31a and 31b. It

The built-in oscillator handler 31 adsorbs the magnetic disk 16 and conveys it to the buffer 41.
It is adsorbed from the buffer 41 and conveyed to the assembly line 11. In this embodiment, vacuum suction is performed as will be described later in detail. The magnetic disks 16 stocked in the buffer 41 are determined to be stocked in the buffer 41 as they are or supplied to the built-in line 11 depending on the operating status of the built-in line 11. The built-in line 11 is a line that continuously feeds the one shell 2b in the transport direction indicated by the arrow B. And
The magnetic disks 16 stocked in the buffer 41 are sequentially supplied one by one to the shell 2b at a predetermined position on the assembly line 11 by the built-in oscillating handler 31, and the shell 2b having the magnetic disks 16 stored therein is subjected to the next process. Be transported to. The above-mentioned assembling work is continuously performed, but when the flow of the shell 2b is interrupted and a so-called tooth loss state is caused, or when the operation of the line is stopped, the magnetic disks 16 are successively stored in the buffer 41. It is stocked and the supply to the embedded line 11 is stopped.

Next, the built-in oscillator handler 31 and the buffer 41 will be described in detail. Since the structure of the elevator 21, the ball screw 22, the pulse motor 23, etc. for setting the vertical position of the magnetic disk 16 to a predetermined position may be the same as the conventional one, its illustration and description are omitted. Double arms 31a, 31 constituting the built-in auto handler 31
A vacuum suction head 31c is provided at each tip of b. Since the vacuum suction head 31c has the same structure, the double arm 31a and the vacuum suction head 31c will be described. At the lower end of the vacuum suction head 31c, an annular convex portion 32 that fits into the circular concave portion of the center core 3 and a second annular convex portion 35 around the convex portion 32 are provided. A plurality of intake holes 33 are provided in the convex portion 35 at predetermined intervals, and the plurality of intake holes 33 communicate with an intake passage 34 formed inside the double arm 31a. Intake passage 34
Is connected to a vacuum source such as a vacuum pump (not shown), so that when the vacuum source is driven, intake is performed in the direction of arrow d. The vacuum source is, for example, 800 mmAq.
It is set to inhale by a certain degree.

An annular concave portion 36 is formed between the annular convex portion 32 and the annular convex portion 35 in which the intake hole 33 is formed. The annular concave portion 36 has a plurality of pressure relief holes 3.
7 are formed at predetermined intervals. Each pressure relief hole 37 is for reducing the negative pressure in the recess 36 when the magnetic disk 16 is vacuum-sucked by the suction hole 33. As shown in FIG. 2C, the pressure relief hole 37 has an annular projection 3
A plurality may be provided by penetrating the side surface of 5. The end surface of the annular convex portion 35 in which the intake hole 33 is formed is formed as a slope having an upward slope from the inner side to the outer side at an angle of 3 ° to 10 °, for example, an inclination of about 9 ° in this embodiment. There is. The annular convex portion 35 is formed outside the flange 3a to which the magnetic sheet 4 is adhered, and is in contact with a position where the magnetic sheet 4 is not suspended from the magnetic material application surface.

On the other hand, a rod-shaped portion 42 constituting the buffer 41
Is constituted by a pipe as shown in the drawing, and its lower end is fixed so as to communicate with the air supply passage 44 formed in the base body 43. The outer diameter of the rod-shaped portion 42 is set to a size that allows it to be inserted into the center hole 3b of the center core 3 without rattling, and within the range of φ = 3.90 to 4.00 mm, for example, 3.95 ± 0. It is set to 0.01 mm. Compressed air of, for example, about 1.0 kg / cm ² is supplied to the air supply passage 44 via a pipe 45. In contrast,
A plurality of ejection holes 46 are formed on the tip end side of the rod-shaped portion 42 at a position corresponding to between the uppermost magnetic disk 16 and the magnetic disk 16 below it in the state where the magnetic disks 16 are stacked. Therefore, when compressed air is supplied from the pipe in a state where the plurality of magnetic disks 16 are stacked, the compressed air is jetted from the jet holes 46 through the inside of the air supply passage 44 and the rod-shaped portion 42. This compressed air gives buoyancy to the uppermost magnetic disk 16, and the second magnetic disk 16
It acts so as to push downward.

Next, the operation of attracting and carrying the magnetic disk 16 will be described. The magnetic disk 16 is positioned at a predetermined position of the magnetic sheet supply unit 14 without being stacked. As for the attraction of the magnetic disk 16, the double arm 31b is moved to the magnetic sheet feeding unit 1 as described with reference to FIG.
It is rotated in four directions and sucked by the vacuum suction head 31c provided on one of the double arms 31b. At this time, the magnetic sheet 4 is attached to the intake hole 3 as in the case shown in FIGS.
3 is deformed along the slope of the formed end face. And
The magnetic disk 16 is conveyed to the position of the buffer 41 by rotating the double arm 31b, and the magnetic disk 16 is stocked in the buffer 41 by stopping the intake at the position where the rod-shaped portion 42 passes through the center hole 3b of the center core 3. To be done.

In this way, the magnetic disks 16 are once stocked and then transported according to the situation of the assembling line 11, but at this time, a remarkable operation as described below is performed. That is, in FIG. 1, the vacuum suction head 31c
Is lowered from the position indicated by the imaginary line to the position indicated by the solid line, and the lower end of the annular convex portion 32 is fitted into the center core 3. As a result, the intake hole 33 is positioned outside the flange 3a so as to correspond to the magnetic material non-coated surface of the magnetic sheet 4. Then, while performing intake from the intake hole 33,
Compressed air is ejected from the ejection hole 46. The magnetic sheet 4 is deformed and adsorbed along the inclination of the end surface of the annular convex portion 35 by the intake air of the intake hole 33, and the magnetic disk 16 is below the magnetic sheet 4.
, The gap between the lower magnetic sheet 4 and the magnetic sheet 4 expands in accordance with the angle, and the entire magnetic disk 16 is vacuum-sucked to the end surface of the suction head 31c.

Thus, at the same time that the uppermost magnetic disk 16 is vacuum-sucked, compressed air is ejected from the ejection holes 46, so that a pushing force acts on the uppermost magnetic disk 16 and A force for pressing the magnetic disk 16 downward acts. Therefore, even if the suction head 31c is lifted from the position shown by the solid line to the position shown by the imaginary line after the topmost magnetic disk 16 is vacuum-sucked, the lower magnetic disk 16 is not lifted by the negative pressure, and There is no lag.

The double arm 31a, which vacuum-adsorbs the magnetic disk 16, rotates in the direction of the assembling line 11 and is mounted on the lower shell 2b positioned at a predetermined position.
Store 6 This operation is performed by lowering the vacuum suction head 31c and then shutting off the intake air. However, since the pressure relief hole 37 is formed, the annular recess 36 is formed.
Does not become negative pressure, the magnetic disk 16 is separated and the lower shell 2
Accurate and smooth storage in b is possible. While vacuum suction and transfer are being performed by one double arm 31a, the next magnetic disk 16 is stocked in the buffer 41 by the other double arm 31b, and the assembly line 11
It becomes possible to carry the sheet to the lower shell 2b and to carry it to the lower shell 2b according to the situation of the assembling line 11. When the stocked magnetic disks 16 are picked up and lifted, the stacked lower magnetic disks 16 are pressed down, the separation between the two is promoted, and the magnetic disks 16 are attracted and transported, and further stored in the lower shell 2b. And it can be done quickly.

[0021]

As described above, the method and apparatus for supplying a flexible disk according to the present invention, when the magnetic disk having the magnetic sheet attached to the center core is conveyed,
The contact surface with the magnetic sheet is an annular shape and is a tapered surface that rises outward in the radial direction, and the magnetic sheet is deformed along the end surface of the head by a vacuum suction head having an intake hole formed in the contact surface. Then, the compressed air is jetted between the magnetic disks from the rod-shaped member for the buffer in the portion corresponding to the uppermost magnetic disk accumulated in the buffer and accumulated in the buffer and the magnetic disk below the magnetic disk. It does not generate a negative pressure between the magnetic disks, and promotes the separation between the magnetic disk that is vacuum-adsorbed and the magnetic disk below it. Therefore, the magnetic disks can be surely attracted one by one, and can be reliably and promptly transported to a predetermined position in the next process, and work efficiency can be improved and product defects can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a schematic configuration of an embedded oscillating handler and a buffer according to an embodiment of the present invention.

2A is an enlarged sectional view showing a main part of the built-in oscillating handler, FIG. 2B is an XX sectional view of FIG. 2A, and FIG. 2C is an XX sectional view of a modified example.

FIG. 3 is a configuration diagram showing an overall configuration of a magnetic disk cartridge.

FIG. 4 is an exploded perspective view showing a conventional magnetic disk cartridge.

FIG. 5 is a configuration diagram showing a conventional built-in oscillator handler.

[Explanation of symbols]

 1 Magnetic Disk Cartridge 2 Shell 3 Center Core 3a Flange 4 Magnetic Sheet 10 Sticking Line 11 Assembly Line 12 Adhesive Application Section 13 Drying Furnace 14 Magnetic Sheet Supply Section 15 Pair of Guides 16 Magnetic Disk 21 Elevator 31 Embedded Auto Handler 31c Vacuum Adsorption Head 32 Annular recess 33 Air intake hole 37 Pressure relief hole 41 Buffer 42 Rod portion 46 Injection hole M Magnetic disk cartridge manufacturing device

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[Procedure amendment]

[Submission date] May 28, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (2)

[Claims] 1. When a magnetic disk having a magnetic sheet attached to a center core is conveyed, the magnetic sheet is deformed so that the outer side in the radial direction is higher than the inner side along the inclination angle of the adsorbing surface of the adsorbing head. Supply of a flexible disk characterized by adsorbing the magnetic disk in a closed state and ejecting compressed air to the lower surface of the adsorbed magnetic disk to promote separation from other magnetic disks stacked under the magnetic disk. Method. 2. A suction head for vacuum-sucking and transporting the magnetic disk between a means for forming a magnetic disk by attaching a magnetic sheet to a center core and a means for housing the magnetic disk in a shell. In a manufacturing apparatus for a magnetic disk cartridge having a rod-shaped body through which the magnetic disk is inserted, and a buffer for temporarily accumulating one or more of the magnetic disks, a magnetic sheet suction surface of the suction head has an annular convex shape facing downward. Is a taper surface which is formed with an air intake hole in the portion and which rises outward in the radial direction, and corresponds to between the uppermost magnetic disk of the accumulated magnetic disks and the magnetic disk laminated thereunder. An apparatus for supplying a flexible disk, wherein an injection hole for injecting compressed air is provided in the rod-shaped portion.