JPH0632185B2 - Method for manufacturing disk cartridge and automatic device for assembling disk cartridge - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a disc cartridge and an automatic disc cartridge assembling apparatus, and more particularly, to a non-woven fabric on the inner surface of a cartridge half which is transferred on an assembly line. A method and an apparatus for automatically supplying a liner.

[Conventional technology]

Prior to explaining the disc cartridge assembling means,
First, the outline of the structure of the disc cartridge will be described with reference to FIGS. 10 and 11.

FIG. 10 is a sectional view of the disc cartridge, and FIG. 11 is a plan view showing the inside of the disc cartridge.
Reference numeral 1 is a disk cartridge, 2 is a liner pressing body, 3 is a liner, and 4 is a disk-shaped recording medium.

The disc cartridge 1 is formed by stacking shallow dish-shaped cartridge halves 1a and 1b, which are formed to have substantially the same shape and the same size, in opposition to each other. A disc-shaped recording medium 4 is formed in the center of one cartridge half 1a. A central hole 6 is provided to project the attached hub 5 to the outside.
A head insertion hole 7 for inserting a recording / reproducing head is formed in the radial direction around the central hole.

The liner pressing body 2 is formed by bending a member having excellent elasticity, such as a polyethylene sheet or a metal thin plate, into a substantially V shape, and the base end portion 2a coated with an adhesive is attached to the cartridge halves 1a, 1b. Glued to the inner surface of the tip 2b
Is pressed against the liner 3 described in detail below.

The liner 3 protects the disk-shaped recording medium 4 that is rotationally driven from abrasion and removes dust adhering to the disk-shaped recording medium 4, and is made of rayon, polypropylene, polyester, or the like, which is highly flexible. It is formed of a nonwoven fabric of thermoplastic synthetic resin fibers. The liner 3 is formed in a circular shape having a diameter larger than that of the disc-shaped recording medium 4, and has a central hole 9 having a diameter slightly larger than that of the central hole 6 at a central portion and a position corresponding to the head insertion hole 7. A head insertion opening 1 slightly wider than the head insertion hole 7
0 is formed. And this liner 3 is the first
As shown in FIG. 1, the central hole 9 is aligned with the central hole 6, the head insertion port 10 is aligned with the head insertion hole 7, and the peripheral portions are fused to the cartridge halves 1a and 1b. The cartridge halves 1a and 1b are attached to the inner surfaces of the cartridge halves 1a and 2b via the liner pressing body 2.

The disk cartridge formed as described above is the first
As shown in FIG. 0, since the disc-shaped recording medium 4 is sandwiched by the non-woven liner 3 pressed by the liner pressing body 2, the disc-shaped recording medium 4 is rotationally driven about the hub 5. In this case, direct contact between the disc-shaped recording medium 4 and the cartridge halves 1a and 1b is prevented, and dust adhering to the surface of the disc-shaped recording medium 4 can be adsorbed.

As described above, the liner 3 applied to the disc cartridge 1 is difficult to handle because it is made of an extremely flexible non-woven fabric.
It is said that it is difficult to automate the supply to the.
Therefore, conventionally, a large number of non-woven fabrics, which are raw materials, are polymerized to form a liner layered body in which a liner having a required shape is punched and formed all at once, and an operator uses the layered body to form the liner 3
The work method of separating the sheets one by one and supplying them to the predetermined positions of the cartridge halves 1a and 1b is adopted.

[Problems of conventional technology]

The above-described conventional method for manufacturing a disk cartridge has a problem that many workers must be arranged for assembling the cartridge halves 1a and 1b and the liner 3, resulting in high manufacturing cost.

Also, the non-woven fabric applied for the liner is extremely flexible,
Moreover, since the fibers fluffed from the cut surface are entangled with each other, it is very difficult to separate the liner 3 one by one from the integrally punched layered molded product, the work efficiency is poor, and There is a problem that the defective product rate is high, such as a plurality of liners 3 to be stretched one by one.

[Means for solving problems]

The present invention has been invented in order to solve the above-mentioned problems of the prior art, and a liner semi-finished product of the same shape and size having at least an outer peripheral edge of a predetermined shape is obtained by cutting out a raw material of a band-shaped nonwoven fabric. Form a liner continuum continuously formed in the longitudinal direction, and while holding out the leading liner semi-finished product and at least the second liner semi-finished product while intermittently feeding out the drawn-out end of the liner continuum, Later,
Cutting the leading liner semi-finished product to form a finished liner product having a predetermined shape, suction-holding the finished liner product by suction means, and sequentially supplying the finished product to the cartridge halves on the assembly line; and A liner continuum made of a non-woven fabric, in which semi-finished liner products of the same shape and size having at least an outer peripheral edge of a predetermined shape are continuously formed in the longitudinal direction, facing the holding portion of the liner continuum, the liner continuum A table provided with first and second positioning means for positioning the liner semi-finished product formed at the head of the first liner and the second liner semi-finished product formed above, and the table located above the table, A liner feeding device for feeding the leading liner semi-finished product positioned by the first positioning means to the second positioning means, and the second positioning means A conveyor device for adsorbing the finished liner product positioned on the cartridge and supplying it to the cartridge half body flowing on the cartridge moving device; and a cutter for cutting at least the middle of the first liner semi-finished product and the second liner semi-finished product, A cutter for cutting the head insertion opening portion of the leading liner semi-finished product is provided.

〔Example〕

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

First, a long non-woven fabric material made of thermoplastic synthetic resin fiber such as rayon, polypropylene, polyester or the like and having a thickness of 50 to 200 μm is continuously cut and processed into a predetermined diameter as shown in FIG. A central hole 2 having a circular outer shape and corresponding to the central hole of the cartridge half in the central portion.
0 is opened, and liner semi-finished products 22a, 22b, 22c ... In which positioning ears 21 are provided on both sides are connected to form a continuous liner body 23.

The width W of the ear portion 21 is formed to be thicker than the diameter D of the central hole 20, and when a tensile force acts in the longitudinal direction of the liner continuous body 23, the tensile force is continuously polymerized in a straight line. The liner continuum 23 is shared by the portion F so that the liner continuum 23 does not expand or deform illegally.

The liner continuous body 23 is wound on a reel and stored.

Then, the lead-out end of the liner continuous body 23 is pulled out, and the leading liner semi-finished product 22a and the second liner semi-finished product 22b are held by an appropriate holder.

Next, with the top liner semi-finished product 22a and the second liner semi-finished product 22b being held, an intermediate portion between the top liner semi-finished product 22a and the second liner semi-finished product 22b (A-A in FIG. 1). Part), and the head insertion opening part of the leading liner semi-finished product 22a (the BB part and the C- part in FIG. 1).
By cutting the (C portion), a liner finished product 26 having a required outer peripheral edge, a central hole 20, and a head insertion opening 25 is formed as shown in FIG.

Next, the liner finished product 26 is adsorbed by the holder holding the leading liner semi-finished product 22a, conveyed to the cartridge half assembly line, and the liner finished product 26 is supplied to the liner superposition section of the cartridge half. To do.

As shown in FIG. 3, the cartridge half 27 to which the finished liner 26 is supplied has a central hole 2
8 and a head insertion hole 29 are formed, and a liner setting portion 30 into which the finished liner product 26 can be fitted is formed on the inner surface thereof.

When the liner finished product 26 is superposed on the cartridge half 27, a recess 31 formed in a direction perpendicular to the head insertion hole 29 of the liner setting portion 30 is used as a positioning, and the liner is completed in the recess 31. The ear 21 of the product 26 is engaged, and the head insertion hole 29 of the cartridge half 27 and the head insertion port 25 of the finished liner product 26 are aligned.

The manufacturing method of the disk cartridge of the first embodiment is
Many liner semi-finished products 22a, 22b, 22c
.. is continuously formed, and the liner having a predetermined shape is completed by performing a cutting process while pulling out the drawn end of the liner continuous body 23. It becomes easy to take out the product, and it is possible to completely prevent the problem that a plurality of liners are stuck to the cartridge half as in the conventional case.

Further, with the leading liner semi-finished product 22a and the second liner semi-finished product 22b held, an intermediate portion between the leading liner semi-finished product 22a and the second liner semi-finished product 22b,
Also, the head insertion opening portion of the leading liner semi-finished product 22a is cut, and the finished liner 26 is adsorbed by the holder holding the leading liner semi-finished product 22a and conveyed to the assembly line of the cartridge half body. Therefore, the finished liner product 26 is not deformed or misaligned during cutting and transportation.

In the first embodiment, the intermediate portion (A-A in FIG. 1) between the leading liner semi-finished product 22a and the second liner semi-finished product 22b, and the leading liner semi-finished product 22a.
The case of simultaneously cutting the head insertion opening portion (BB portion and CC portion in FIG. 1) has been described. First, the first liner semi-finished product 22a and the second liner semi-finished product 22b
The intermediate portion (A-A portion in FIG. 1) is cut, and then the head insertion opening portion (BB portion and CC portion in FIG. 1) of the leading liner semi-finished product 22a is cut. May be. Also in this case, it is possible to prevent the finished liner product 26 from being deformed or displaced during cutting and transportation.

Further, as shown in FIG. 2 (b), the magnetic head insertion opening 25
It is also possible to form a continuous portion 25a between the magnetic head insertion opening 25 and the central hole 20 without communicating with the central hole 20.

Next, a second embodiment of the present invention will be described with reference to FIG.

The second embodiment of the present invention is that a liner continuum having no central hole 20 is used.

That is, similar to the first embodiment, a long non-woven fabric material made of thermoplastic synthetic resin fiber such as rayon, polypropylene, polyester, etc. is continuously cut to have a predetermined diameter as shown in FIG. Semi-finished liner 32 having a circular outer shape with positioning ears 21 protruding from both sides
A liner continuum 33 in which a, 32b, 32c, ... Are connected in series is created.

Next, the pull-out end of the liner continuous body 33 is pulled out, the leading liner semi-finished product 32a and the second liner semi-finished product 32b are held by an appropriate holder, and a central hole (not shown) is formed in the leading liner semi-finished product 32a. Open).

Next, with the leading liner semi-finished product 32a and the second liner semi-finished product 32b held by the holding tool, the middle part and the leading end of the leading liner semi-finished product 32a and the second liner semi-finished product 32b Liner semi-finished product 32
The liner finished product similar to that of the first embodiment (FIG. 2) is formed by cutting the head insertion opening portion (not shown) of a.

Next, the finished liner product is adsorbed by the holder holding the leading liner semi-finished product 32a, conveyed to the assembly line of the cartridge half body, and the liner finished product is polymerized in the liner polymerization part of the cartridge half body.

The second embodiment also has the same effect as the first embodiment.

In the second embodiment described above, the case where the central hole is opened and then the head insertion opening is cut is described. However, by using an appropriate cutter, as shown in FIG.
As shown in (b), it is possible to simultaneously cut the central hole and the head insertion opening.

Further, the cutting of the intermediate portion between the liner semi-finished product 32a at the tip and the second liner semi-finished product 32b and the head insertion opening portion of the liner semi-finished product 32a at the tip may be performed at the same time. Liner semi-finished products 32
It is also possible to cut an intermediate portion between a and the second liner semi-finished product 32b, and then cut the head insertion opening portion of the leading liner semi-finished product 32a.

Further, as shown in FIG. 4 (c), the magnetic head insertion opening 65a may be formed in the lateral direction, and the cartridge half body may be formed with a positioning portion at a position corresponding thereto.

As described above, when the liner continuum 33 is intermittently fed out to cut the middle part between the leading liner semi-finished product 32a and the second liner semi-finished product 32b, as shown in FIG. 4 (a), Pre-drilling 2 at the center of the positioning ear 21
It is also possible to open 1a and use this perforation 21a to set the timing of intermittent feeding.

Hereinafter, an example of an automatic assembling apparatus for carrying out the disc cartridge manufacturing method of the present invention will be shown.

An automatic disc cartridge assembling apparatus according to the present invention includes a fifth aspect.
As shown in the drawing, the delivery roller 4 that holds the liner continuum 23 and delivers the draw-out end 23a thereof at a predetermined speed.
0, the table 41 for holding the pull-out end 23a of the liner continuous body 23, and the pull-out end 2 of the liner continuous body 23.
3a is intermittently transferred, a liner feeding device 42, cutters 43, 44, 45 for cutting and separating the liner finished product 26 from the liner continuum 23, and a transport device 46 for transporting the cut and separated liner finished product 26. Basically composed.

Each of the cutters 43, 44, 45 has a pair of cutting blades 43a and 43b, 44a and 44b, 45a and 45b arranged to face each other, and fixed blades 43a, 43a,
The liner continuum 23 is cut by setting 44a on the table 41 described in detail below and driving the movable blades 43b, 44b, 45b.

As shown in FIGS. 6 and 7, on the table 41, the leading liner semi-finished product 22 a and the second liner semi-finished product 2 a drawn from the liner continuum 23 are shown.
Positioning pins 47 and 48 for positioning 2b, and fixed blades 43a and 44a of the cutters 43, 44 and 45,
45a is provided.

As shown in FIG. 6, the first positioning pin 47 has substantially the same diameter as the central hole 20 formed in the liner semi-finished products 22a, 22b, 22c ... The surface is formed in a pointed shape, and a concave portion 47a for positioning the liner feeding device 42, which will be described in detail below, is formed on the upper surface of the concave portion 47a.

The second positioning pin 48 is also the first positioning pin 4
It is formed in exactly the same shape as 7.

The first positioning pin 47 and the second positioning pin 48 are provided so as to be able to move in and out from the upper surface of the table 41 at a distance equal to the distance L between the central ports 20 opened in two adjacent liner semi-finished products. To be

When the first liner semi-finished product 23a and the second liner semi-finished product 23 of the liner continuous body 23 are attached to the positioning pins 47 and 48, the first fixed blade 43a is the first liner semi-finished product 23a and the second liner semi-finished product 23a. Liner semi-finished products 23
It is set at a position corresponding to the intermediate portion (section AA in FIG. 1) of b. In addition, the second fixed blade 44a and the third fixed blade 45a are set at positions corresponding to the head insertion opening portion (BB portion and CC portion in FIG. 1) of the leading liner semi-finished product 23a. To be done.

The delivery roller 40 synchronizes with a liner feeding device 42, which will be described in detail later, and pulls out the end 2 of the liner continuous body 23.
3a is rotated in a rewinding direction so that a constant slack 23b is always held between the delivery roller 40 and the table 41.

The liner feeding device 42, as shown in FIG.
The concave portion 47 of the first positioning pin 47 is formed in the central portion of the lower surface.
A positioning protrusion 42a that can be fitted to a is provided in a protruding manner,
A plurality of suction cups 49 connected to a vacuum pump (not shown) are circularly attached to the outer peripheral portion thereof. Although the detailed structure of the liner feeding device 42 is omitted, as shown in FIG. 5, the liner feeding device 42 reciprocates between the first positioning pin 47 and the second positioning pin 48. ing.

As shown in FIG. 9, the carrying device 46 has a positioning projection that can be fitted into the recessed portion of the second positioning pin 48 on the lower surface, and a vacuum pump (not shown), as with the liner feeding device 42 described above. A plurality of connected suction cups 50 are attached in a circular shape, and as shown in FIG. 5, between the second positioning pin 48 of the table 41 and the cartridge transfer device 51 for transferring the cartridge half 27. It is designed to move back and forth.

In FIG. 9, reference numeral 52 denotes a movable blade insertion groove through which the movable blades 44b and 45b of the cutters 44 and 45 are inserted.

A liner pressing body for pressing the liner against the disk-shaped recording medium is preliminarily attached to a predetermined position on the inner surface of the cartridge half body 27 transferred on the cartridge transfer device 51.

Next, a method of using and an operation of the disc cartridge automatic assembling apparatus will be described.

First, prior to use, the lead-out end 23a of the liner continuous body 23 is pulled out from the delivery roller 40, the center hole 20 of the leading liner semi-finished product 22a is attached to the second positioning pin 48, and the second from the leading end. Liner semi-finished product 22
The center hole 20 of b is attached to the first positioning pin 47.
In this case, an appropriate slack 23b is provided between the feed roller 40 and the table 41 so that an unreasonable tensile force does not act on the liner continuous body 23.

When the apparatus is operated, the liner feeding device 42 and the conveying device 46 descend, and the leading liner semi-finished product 22a of the liner continuum 23 and the second liner semi-finished product 22b are pressed and fixed on the table 41. After fixing the liner continuum, the positioning pins 47 and 48 are retracted into the table 41, and the liner continuum 23 and the positioning pins 47 and 48 are fixed.
Is disengaged.

Next, the movable blade 43b of the first cutter 43 descends to cut the middle of the leading liner semi-finished product 22a and the second liner semi-finished product 22b (A-A part in FIG. 1), and then the second The movable blade 44b of the cutter 44 and the movable blade 45b of the third cutter 45 descend to cut the head insertion opening portion (BB portion and CC portion in FIG. 1) of the leading liner semi-finished product 22a. , Liner finished product with a predetermined shape 2
6 is formed.

When the finished liner product 26 is cut and separated, a vacuum device (not shown) is activated to operate the suction cup 49 of the liner feeding device 42.
Further, the suction cup 50 of the carrier device 46 is brought into a vacuum state, and the finished liner product 26 and the liner semi-finished product which has become the head of the liner continuum 23 are adsorbed.

Then, the transfer device 46 is operated to transfer the finished liner 26 to the cartridge half 27 on the cartridge transfer device 51. When the liner finished product 26 transported by the transport device 46 is superposed on the cartridge half body 27, suction of the suction cup 50 is stopped, and the liner finished product 26 is supplied to the inner surface of the cartridge half body 27.

At the same time, the liner feeding device 42 is activated to convey the liner semi-finished product 22a, which is a new head of the liner continuous body 23, to a position facing the second positioning pin 48. At this time, the delivery roller 40 is rotationally driven, and the liner continuous body 23 is delivered by a length equal to the movement amount of the liner delivery device 42. Thereby, the looseness 23b of the lead-out end 23a of the liner continuous body 23 is always held.

Next, the positioning pins 47 and 48 project from the upper surface of the table 41, and the center hole 20 of the leading semifinished product 22a of the liner 22a.
The second positioning pin 48 and the first positioning pin 47 in the central hole 20 of the second liner semi-finished product 22b. At this time, both positioning pins 47,
Since the tip end portion of 48 is formed in a pointed shape, the liner semi-finished products 22a, 22b can be smoothly positioned by the positioning pins 47, 48.
It is mounted on and is positioned.

Finally, the liner feeding device 42 and the transport device 46
Returns to the original position and prepares for the next step.

In this way, the finished liner 26 can be automatically fed to the cartridge half 27.

In the above embodiment, the liner feeding device 42
The case where the suction cups 49 and 50 connected to the vacuum pump are provided on the lower surface of the transfer device 46 has been described, but the gist of the present invention is not limited to this, and the liner continuum 23 or the liner finished product 26 may be used. Any known holder that can be held in a planar shape can be used.

Further, in the above embodiment, the case where the cutters 44 and 45 forming the head insertion opening are arranged in the direction perpendicular to the transfer direction of the liner continuous body 23 has been described, but the gist of the present invention is not limited to this. However, when the liner of FIG. 4 (c) is manufactured, the liner can be arranged in any direction such as set parallel to the transfer direction of the liner continuous body 23.

The disk cartridge automatic assembly apparatus of the above embodiment is
Since the liner can be automatically supplied to the cartridge half 27, the productivity can be remarkably improved as compared with the conventional method. Moreover, it is possible to completely eliminate the problem of supplying a plurality of liners that should be supplied one by one as in the conventional case.

〔The invention's effect〕

As described above, according to the present invention, the cut liner finished product is sucked and held by the conveying device having the liner suction means and supplied to the cartridge half which flows on the cartridge moving device. The work of tensioning the liner on the body can be automated, and the workability at the time of manufacturing the disc cartridge can be improved and the incidence of defective products can be reduced. Therefore, it is possible to provide a disc cartridge which is inexpensive and has high reliability.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a liner continuous body used in the disk cartridge manufacturing method of the present invention, FIG. 2 is a plan view of a finished liner product, and FIG. 3 is a plan view seen from the inner surface of a cartridge half body. FIG. 4 is a plan view showing another example of the liner continuum, and FIG. 5 is a front view showing an example of an automatic disc cartridge assembling apparatus using the liner continuum.
6 is a partial cross-sectional view of the table portion, FIG. 7 is a plan view of the table, FIG. 8 is a bottom view of the liner feeding device, FIG. 9 is a bottom view of the transfer device, and FIG. 10 is a conventional disc cartridge. 11 is a plan view as seen from the inside of the cartridge half body. 20: central hole, 21: ears, 22a, 22b, 22c.
..: Semi-finished liner, 23: Continuous liner, 25:
Head insertion port, 26: Completed liner, 27: Cartridge half, 28: Central hole, 29: Head insertion hole, 30: Liner setting portion, 31: Recessed portion, 32a, 32
b, 32c ...: Semi-finished liner, 33: Continuous liner, 40: Delivery roller, 41: Table, 42: Liner feeding device, 43, 44, 45: Cutter, 4
6: transport device, 47, 48: positioning pins, 49, 5
0: sucker, 51: cartridge transfer device, 52: movable blade insertion groove

Claims (8)

[Claims] 1. A strip-shaped nonwoven fabric is cut out to form a liner continuum in which semi-finished liner products of the same shape and size having at least an outer peripheral edge of a predetermined shape are continuously formed in the longitudinal direction. The leading end of the liner semi-finished product and at least the second liner semi-finished product are held and fixed while intermittently feeding out the lead-out end of the continuum, and then the leading liner semi-finished product is cut to obtain a liner finished product of a predetermined shape. A method of manufacturing a disk cartridge, characterized in that the finished liner product is formed and sucked and held by a suction means to be sequentially supplied to a cartridge half on an assembly line. 2. The manufacture of a disk cartridge according to claim 1, wherein the liner continuum is a liner continuum in which the semi-finished product of the liner has a pre-established central hole. Method. 3. A liner continuum in which a central hole is not formed in the liner semi-finished product is used as the liner continuous body, and the central hole is opened before the head insertion port is opened or at the same time when the head insertion port is opened. Characterized by that
A method of manufacturing a disk cartridge according to claim 1. 4. A connection between a liner semi-finished product at the head of the liner continuum and a liner semi-finished product at the second position is cut before the formation of the head insertion port or simultaneously with the formation of the head insertion port. The method of manufacturing a disk cartridge according to claim 1, claim 2, or claim 3, characterized in that. 5. A non-woven liner continuum formed by continuously forming in the longitudinal direction semi-finished liner products of the same shape and size having at least an outer peripheral edge of a predetermined shape, and facing the holding portion of the liner continuum. A table provided with first and second positioning means for positioning the leading liner semi-finished product and the second liner semi-finished product formed on the liner continuum, and the table located above the table, Liner delivery device for delivering the leading liner semi-finished product positioned by the positioning device to the second positioning device, and a cartridge for adsorbing the finished liner product positioned by the second positioning device and flowing on the cartridge moving device. A conveying device for supplying the half body and a cutter for cutting at least the middle of the first liner semi-finished product and the second liner semi-finished product , And it is characterized by providing a cutter for cutting the head insertion opening portion of the liner blank of the top automated assembly device of the disc cartridge. 6. As the first and second positioning means, a positioning pin having a diameter substantially equal to that of a central hole formed in the liner and having a pointed leading end portion can be put in and out from the upper surface of the table. The automatic assembly device for a disk cartridge according to claim 5, characterized in that 7. The disk cartridge according to claim 5, wherein among the cutters, a cutter that forms a head insertion opening is arranged at a right angle to the feeding direction of the liner continuum. Automatic assembly equipment. 8. The disk cartridge according to claim 5, wherein among the cutters, a cutter that forms a head insertion opening is arranged parallel to the feed direction of the liner continuum. Automatic assembly equipment.