JPH0458116B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floppy disk liner cutting device in which a magnetic disk is housed within a hard shell.

[Prior art and its problems] How to reduce reading and writing errors in floppy disks is extremely important. Dust that adheres to the surface of a magnetic disk is a significant cause of errors. A lifter gently presses the liner against the surface of the magnetic disk rotating within the shell, removing dust that adheres to the surface. Nonwoven fabrics are mainly used for liners. Non-woven fabrics are made by combining flexible fibers at intersections without any three-dimensional direction, and since the fibers are reliably bonded at intersections, less dust is generated. However, when this is cut into disks to be put into shells, the fine fibers are cut and countless fine particles of dust are generated. In particular, in order to give the nonwoven fabric thickness and cushioning properties, the fibers are deformed into irregular shapes such as waves or loops. As a result, it is impossible to completely eliminate dust during cutting. Sheet materials in which fine fibers are bonded, not only non-woven fabrics but also cloth and cushioning paper, cannot completely eliminate the cutting dust of the fine fibers that is generated during cutting. Fine dust can enter between the magnetic disk and the head that comes into contact with it, causing errors.

The present inventor developed a mold 22 having the structure shown in FIG. This mold has an air hole 23 opened near the cutting edge of the mold to suck out cutting dust. The air holes discharge cutting dust generated on the cut edge when the mold cuts the liner sheet. However, with a mold having this structure, the air holes are blocked in the liner or liner sheet to be cut, and the air holes 23 are somewhat separated from the cutting edge of the liner, so cutting dust cannot be completely eliminated, and furthermore, when the mold is used, cutting dust cannot be completely eliminated. Accordingly, cutting dust accumulates in the air holes, which gradually grows and tends to clog the air holes, resulting in a drawback that maintenance is extremely time-consuming.

[Object of the Invention] The present invention was developed with the aim of solving this drawback, and the dust generated on the cut edge of the liner sheet is immediately and effectively discharged after cutting, thereby reducing the amount of dust attached. To provide a floppy disk liner cutting device capable of cutting a clear liner.

Another important purpose of this invention is that the suction gap that sucks out cutting dust is cleaned after each cut, preventing cutting dust from accumulating in the suction gap, and effectively discharging dust from the cutting edge over a long period of time. To provide a floppy disk liner cutting device which can be cut easily and requires no effort for maintenance.

[Means for Solving Conventional Problems] The floppy disc liner cutting device of the present invention includes a mold for cutting a liner sheet into a predetermined disc-shaped liner by sandwiching it between both sides, and a mold installed in the mold. and an exhaust passage cleaning member.

The exhaust passage cleaning member is located in a recess into which opposing molds are inserted when the molds are sandwiched, is slidably disposed in the direction of entry of the molds, and is itself The convex part of the opposing mold has an external shape that provides an air suction gap between the outer periphery of the mold and the inner surface of the concave part of the mold, and is itself sandwiched by a liner sheet by an elastic material. It has been pushed out to a position where the surface is pressed against the part.

Furthermore, the apparatus of the present invention also includes an exhaust means that communicates with the suction gap between the exhaust passage cleaning member and the mold, and sucks the cutting dust of the liner sheet out of the mold together with air from the suction gap.

The mold pinches and cuts the liner sheet, the cutting dust is discharged through the suction gap, and the exhaust passage cleaning member is pressed and moved by the mold to clean the suction gap.

[Operations and Effects] The liner cutting device of the present invention has suction gaps along the cut edges of the liner, and these suction gaps are narrowly spaced, and the cutting dust is intensively removed together with air from the suction gaps. Therefore, immediately after the mold cuts the liner sheet, the cutting dust generated here is immediately exhausted from the suction gap without being dispersed to the surroundings. Therefore, cutting dust is extremely effectively and reliably discharged from the mold, minimizing the amount of dust adhering to the cut liner, and supplying an extremely clear liner to the shell. Realizing these extremely important features.

Furthermore, the cutting device of the present invention does not exhaust the air from the entire recess, but narrows it down to a narrow gap along the cutting edge, and uses a high-speed flow of air to effectively exhaust cutting dust from the suction gap in the narrow gap. In addition to being
Each time the liner sheet is cut, the narrow suction gap is cleaned by a sliding exhaust passage cleaning member to remove cutting dust that has accumulated there. As a result, the suction gap does not get clogged for a long period of time, air is effectively exhausted, and maintenance of this part is not required.

Furthermore, since the exhaust passage cleaning member is pushed by the convex parts of the opposing molds and moves to clean the suction gap,
There is no need for a member to drive the exhaust passage cleaning member, and the suction gap can be prevented from being clogged with dust with a simple structure.

Furthermore, in addition to this, since the exhaust passage cleaning member is provided in the recessed portion of the mold, the surface of the mold in the open state can be made nearly flat by this exhaust passage cleaning member. Therefore, the liner sheet can be placed on a nearly flat mold and cut. Even if the liner sheet placed in a flat mold is flexible enough to be easily deformed, it can be held flat and cut into an accurate shape. The liner is used to protect the magnetic disk surface when it comes into contact with the magnetic disk, and is made of a flexible sheet material. When a flexible sheet material is placed on an uneven mold and cut, it is not held flat, and the concave portions are concave and bend, and when cut in this state, the shape tends to be distorted.

In contrast, according to the present invention, a flexible liner sheet can be cut in a nearly flat state or with a completely flat mold, and can be cut accurately without distorting the shape.

[Preferred Embodiment] Hereinafter, one embodiment of the present invention will be described based on the drawings. However, the embodiments shown below are intended to exemplify an apparatus for embodying the technical idea of the present invention, and are not intended to limit the floppy disk liner cutting apparatus of the present invention to the following apparatus. The device of the present invention, within the scope of the claims, includes:
Various changes are made.

Further, in this specification, numbers corresponding to the members shown in the embodiments are added to the members shown in the claims so that the claims are easy to understand. However, the members described in the claims are by no means limited to the members shown in the examples.

The floppy disk liner cutting device shown in the schematic diagram in FIG. 1 and the sectional view in FIG. 3 includes molds 4 and 5 for cutting the liner 2 from the liner sheet 1;
An exhaust passage cleaning member 7 provided in the recesses of the molds 4 and 5 is shown.

The liner 2 is attached to the shell 3 of the floppy disk, as shown in FIG. 4, to prevent the magnetic disk from directly contacting the surface of the shell. That is, the liner is located between the magnetic disk and the shell and protects the surface of the magnetic disk.

For example, a non-woven fabric is used for the liner sheet 1, which is sandwiched between upper and lower molds 4 and 5 shown in FIG. 1 and cut by punching. In this mold, a lower mold 5 is fixed to a base 6, and an upper mold 4 descends to cut the liner sheet 1 into disk shapes.

As shown in FIG. 4, the lower mold 5 has a horseshoe-shaped convex portion, and the upper surface of the convex portion is formed into a flat shape so that a horseshoe-shaped liner 2 which is circular and partially cut off can be cut. has been done. A recess is formed in the center and outside of the lower mold, and this recess is provided with an exhaust passage cleaning member 7 that is pushed down by the upper mold when the upper mold descends. There is. The exhaust passage cleaning member 7 is disposed on the lower mold 5 so as to be movable up and down, and is pressed from below by a pressing spring 8.

The exhaust passage cleaning member 7 provided at the center of the lower mold 5 has a circular upper surface, and the exhaust passage cleaning member 7 provided at the outer periphery of the lower mold 5 has a ring-shaped upper surface.

A suction gap S is provided between the exhaust passage cleaning member 7 and the concave surface of the lower mold. Therefore, the outer circumference of the exhaust passage cleaning member 7 at the center of the lower mold 5 is somewhat smaller than the inner diameter of the recess, and the inner diameter of the exhaust passage cleaning member 7 at the outer periphery of the lower mold 5 is provided on the outer periphery of the lower mold 5. It is formed to be somewhat larger than the inner diameter of the groove-shaped ring-shaped recess, and a suction gap S of, for example, 0.1 to 0.5 mm is provided between the exhaust passage cleaning member 7 and the recess surface.

The suction gap S communicates with an air passage 10 provided between the exhaust passage cleaning member 7 and the recess, and this air passage 10 is connected to an exhaust means (not shown) via a hose 11.
It is connected to an exhaust pump or vacuum tank. The central exhaust passage cleaning member 7 is formed to be shallower than the depth of the recess, and an air passage 10 is formed below the exhaust passage cleaning member 7.
is formed to be somewhat thinner in the middle, and a groove is carved on the outer side of the upper and lower middle of the recess to provide an air passage 10 between the exhaust passage cleaning member 7 and the recess. An air passage 10 provided in the outer exhaust passage cleaning member 7 and an air passage 10 provided below the central exhaust passage cleaning member.
are in communication with each other, and an exhaust port is opened in an air passage 10 provided in the exhaust passage cleaning member 7 on the outer periphery, and this exhaust port is connected to an exhaust means via a hose 11.

As shown in FIG. 4, the central exhaust passage cleaning member 7 and the outer peripheral exhaust passage cleaning member 7 have flat upper surfaces, and when the mold is open, they are pushed out to the same plane as the mold and then stopped. Ru.

Therefore, the central exhaust passage cleaning member 7 has a shaft hole vertically penetrated through the center, and a set screw 1 is inserted into this shaft hole.
2 is inserted, and the raised position is limited by a set screw 12. The head of the set screw 12 is the exhaust passage cleaning member 7
The upper part of the shaft hole is formed thick enough to fit the head of the set screw 12 so as not to protrude from the upper surface of the shaft hole. The outer periphery of the exhaust passage cleaning member 7 is the push spring 8
It is pushed up by a coil spring.

Exhaust passage cleaning member 7 on the outer periphery formed in a ring shape
is pushed up by a coil spring, which is a push spring 8, at multiple locations on the lower surface at equal intervals, and protrusions 13 protrude from the inside and outside of the lower end, and these protrusions 13 come into contact with the stops of the lower mold 5. The rising position has been identified.

The lower end of the push spring 8 is pressed by a push-up screw 14, and the push-up screw 14 is screwed into a vertically drilled screw hole. Can be adjusted.

The mold shown in FIGS. 1 and 3 sucks out air from the gap between the recess of the lower mold 5 and the exhaust passage cleaning member 7 to discharge cutting dust to the outside of the mold. Cutting dust is not forcibly exhausted between the recess of the mold and the exhaust passage cleaning member 7. Cutting dust is generated along the cut edges when the liner sheet is cut. Therefore, by discharging this to the outside only from the lower mold 5, it can be removed out of the mold effectively.
However, the exhaust passage cleaning member 7 of both the upper and lower molds 4 and 5
Needless to say, the cut dust from the liner sheet can be exhausted outside the mold through the gap between the grooves and the recesses.

Air can be continuously exhausted from the suction gap S, or the upper mold 4 can be lowered to remove the liner sheet 1.
It is also possible to temporarily exhaust the air only when cutting. In the case of temporary exhaust, an exhaust valve (not shown) is connected between the air passage 10 and the exhaust means, and the exhaust valve is opened and closed in accordance with the vertical movement of the mold.

By the way, the liner sheet 1 is usually a long and narrow tape-shaped sheet material for convenient transportation. Therefore, on both sides of the lower mold 5, as shown in FIG. Liner sheet 1 along the top surface of 5
will be transferred.

The upper mold 4 has a flat lower surface of the convex portion, and the lower mold 5
The horseshoe-shaped convex part is inserted, and the upper and lower molds 4 and 5
A recess into which a lower mold is inserted is provided so that a circular liner 2 can be cut with the liner sheet 1 sandwiched therebetween. An exhaust passage cleaning member 7 that is pushed up by the lower mold 5 and moves upward is provided in the recess.

The exhaust passage cleaning member 7 is pressed by a pressing spring 8 similarly to the exhaust passage cleaning member 7 of the lower mold 5.

The upper mold 4 is fixed to the lower surface of the upper and lower tables 16, and upper and lower rods 17 are fixed to both sides of the upper and lower tables 16. Although not shown, the upper and lower rods 17 vertically penetrate the base, and are connected to the upper and lower bases 1 through the upper and lower rods 17.
6 moves vertically in parallel to cut the liner sheet 1.

The exhaust passage cleaning member 7 provided in the upper mold 4 and the lower mold 5 are provided with air holes 18 for adsorbing the liner 2 and the liner sheet 1.

The air hole 18 is connected to an air source via an on-off valve and a hose (not shown), and when the on-off valve is opened, the liner 2 and liner sheet 1 are attracted.

The lower mold 5 absorbs the liner sheet 1 when the upper mold 4 descends after the liner sheet 1 is transferred, thereby preventing the liner sheet 1 from shifting during cutting.

Exhaust passage cleaning member 7 provided in the upper mold 4
When the upper mold 4 is raised and the mold is opened,
The cut liner 2 is adsorbed to the lower surface.

5 to 11 show the process of cutting the liner sheet and welding it to the shell 3.

As shown in FIG. 5, with the molds 4 and 5 open, the liner sheet 1 is transported in contact with or close to the clamped cutting surface on the upper surface of the lower mold 5, After that, as shown in FIG.
5 is closed and the liner 2 is punched and cut. The cut liner 2 is placed in molds 4 and 5 as shown in FIG.
is opened and adsorbed to the lower surface of the upper mold 4.

Thereafter, as shown in FIG. 8, the take-out suction member 19 enters directly under the upper mold 4, and the liner 2 that has been suctioned to the lower surface of the upper mold 4 is removed by the take-out suction member 19.
It is adsorbed to the top surface of. When the liner 2 is transferred from the lower surface of the upper mold 4 to the upper surface of the take-out suction member 19, the exhaust passage cleaning member 7 of the upper mold 4 releases the suction state of the liner 2, and then the take-out suction member 19 moves the liner 2 adsorbs.

Therefore, although the extraction suction member 19 is not shown,
An air hole for adsorbing the liner 2 is drilled on the top surface in the same way as the air hole in the mold, and this air hole is
It is connected to an air source via an on-off valve and a hose.

The extraction suction member 19 moves horizontally from the outside of the mold and enters the lower part of the upper mold 4, and then the upper mold 4
The liner 2 rises until its upper surface contacts the liner 2 which is adsorbed on the liner 2.

As shown in FIG. 9, the take-out suction member 19 suction-holds the liner 2 on its upper surface and moves it out of the mold and to an intermediate position. At this time, the extraction suction member 19
When the liner 2 is suctioned on top with the top surface being pressed by the liner 2, the liner 2 that has been suctioned is lowered a little to prevent it from coming into contact with the upper mold 4, or after the upper mold is raised slightly. , horizontally move and transport the liner 2 to the relay position.

At the relay position, the secondary transfer member 20 is located above the extraction suction member 19. Secondary transfer member 20
Similar to the upper surface of the take-out suction member 19, air holes for suctioning the liner 2 are provided on the lower surface. When the liner 2 is transferred from the take-out suction member 19 to the lower surface of the secondary transfer member 20, the take-out suction member 1
9 releases the suction state of the liner, and then the secondary transfer member 20 suctions the liner 2.

Even at the relay position, the take-out suction member 19 rises, or the secondary transfer member 20 descends, and the second
The lower surface of the next transfer member 20 is pressed against the upper surface of the liner to transfer the liner 2 from the take-out suction member 19 to the secondary transfer member 20.

The liner 2 transferred to the lower surface of the secondary transfer member 20 at the relay position is transferred from the relay position to the shell 3 as shown in FIGS. 10 and 11.
After moving above, it descends and is carried to the fixed position of Ciel 3. While the secondary transfer member 20 presses the liner 2 against the shell 3, a heating welding member (not shown) descends to the portion where the secondary transfer member 20 does not press the liner 2, and heats the liner 2 against the shell 3. Weld.

By the way, the molds 4 and 5 are clamped to cut the liner 2 from the liner sheet after the take-out adsorption member 19 transports the liner to the outside. Also, 2
When the next transfer member 20 receives the liner 2 and conveys it to the shell 3, the take-out suction member 19 can enter into the opened molds 4 and 5 and take out the liner 2. That is, the molds 4 and 5, the take-out adsorption member 19, and the secondary transfer member 20 can cut and transfer the liner simultaneously without interfering with each other's operations.

FIG. 12 shows the extraction suction member 19 and the secondary transfer member 2.
An example of a moving mechanism of 0 is shown.

The extraction suction member 19 and the secondary transfer member 20 each have an arm, and the rear end of the arm is fixed to a vertical rotating shaft 21 so that the arm itself can rotate in a horizontal plane. It is freely supported. The extraction suction member 19 and the secondary transfer member 20 are
Although not shown, the liner is rotated by a certain angle by a cylinder, motor, cam, etc. to transfer the liner. In other words, the rotation angle of the extraction suction member and the length of the arm are:
The values are determined to allow the lighter to be transferred from the mold to the intermediate position, and the rotation angle and arm length of the secondary transfer member are determined to move the liner from the intermediate position to above the shell.

A rotating shaft 21 to which the extraction suction member 19 and the secondary transfer member 20 are fixed is rotatably and vertically movably supported, and is moved up and down by a cylinder or the like to transfer the extraction suction member 19 and the secondary transfer member 20 to each other. 20 can be moved up and down.

[Brief explanation of drawings]

1 to 3 are a schematic sectional view, a plan view, and a sectional view of a mold showing one embodiment of the present invention, FIG. 4 is a plan view showing a liner to be filled into a shell, and FIGS. 5 to 11. The figure is a process diagram of the liner cutting and supplying method for a floppy disk.
The figure is a cross-sectional view of a conventional mold. 1... liner sheet, 2... liner, 3...
...Ciel, 4...Mold, 5...Mold, 6...Base, 7...Exhaust passage cleaning member, 8...Press spring, 10...Air passage, 11...Hose, 12...
Set screw, 13... Convex strip, 14... Push-up screw, 15
...Feeding stand, 16...Upper and lower stand, 17...Upper and lower rod, 18...Air hole, 19...Take-out suction member, 2
0... Secondary transfer member, 21... Rotating shaft, 22...
Mold, 23...Air hole.

Claims (1)

[Scope of Claims] 1. Molds 4 and 5 that sandwich the liner sheet 1 on both sides and cut it into a predetermined disc-shaped liner, and molds that face each other in the sandwiched state of the molds 4 and 5. is located in the recess into which it is inserted, and is slidably disposed in the direction of entry of the mold, and has an air suction gap S between its outer periphery and the inner surface of the mold recess. an exhaust passage cleaning member having an outer shape in which a liner sheet is sandwiched, and the exhaust passage cleaning member itself is pushed out by an elastic material to a position where its surface is pressed against a convex portion of an opposing mold sandwiching a liner sheet. 7, and an exhaust means that communicates with the suction gap S between the exhaust passage cleaning member 7 and the mold and sucks out the cut dust of the liner sheet along with air from the suction gap to the outside of the mold. The liner sheet 1 is sandwiched and cut, the cut dust is discharged through the suction gap S, and the exhaust passage cleaning member 7 is pressed and moved by a mold to clean the suction gap S. Liner cutting device for floppy disks. 2. The exhaust passage cleaning member 7 has a stopper, and the stopper allows the surface of the exhaust passage cleaning member 7 to be substantially the same as the surface of the mold convex portion at the protruding position. floppy disk liner cutting device. 3. The floppy disk liner cutting device according to claim 1, wherein a pair of molds are arranged one above the other, and an exhaust means is connected to the suction gap S of the lower mold. 4. The floppy disk liner cutting device according to claim 1, wherein the interval between the suction gaps S is 0.1 to 0.5 mm.