JPH0411371A - Adhesion device for magnetic recording disk - Google Patents

Abstract

PURPOSE:To realize satisfactory adhesion by disposing an upper jig which can press the adhesion position between a center core placed on a lower jig and a magnetic storage disk and raising and lowering the pressing part along a guide rail stood on a rotating table. CONSTITUTION:An upper jig 65 consists of a toggle mechanism part 69 and a pressing part 71 which is pivotally supported in the lower end of the mobile part of this toggle mechanism part 69 and can be raised and lowered along a guide rail 70 vertically provided on the side of a support 68. The pressing part 71 is provided with a slide part 80, which is slided and supported on the guide rail 70, as one body, and it is raised and lowered in accordance with the operation of the toggle mechanism part 69. Consequently, the pressing part 71 of the upper jig is raised and lowered on a prescribed locus along the guide rail 70 and presses the magnetic recording disk without rolling by the driving operation of the toggle mechanism part 69. Thus, transverse deviation of the magnetic recording disk to the center core is prevented to improve the press- fixing precision.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Industrial field of application B. Overview of the invention C1. Prior art 1. Problem to be solved by the invention E0. Means for solving the problem F. Figure 2) G. Structure of parts feeder G3 Structure and operation of adhesive coating device G4. The present invention relates to a bonding device for magnetic recording disks, and more particularly to a device for bonding a floppy disk to a center core.

B1 Summary of the Invention The present invention provides a magnetic recording disk bonding device for bonding a magnetic recording disk to a center core coated with an adhesive, which includes a plurality of lower jigs for placing the center core coated with an adhesive on a rotary table. and is paired with the lower jig, and is capable of pressing the bonding position between the center core and the magnetic recording disk when the magnetic recording disk is placed on the center core placed on the lower jig. Consists of a lower jig, ￥
The tJ Kijo jig has a toggle mechanism section and a pressing section that is pivotally supported at the movable lower end of the toggle mechanism section and is movable up and down along a guide rail erected on a rotary table, and drives the toggle mechanism section. By lowering the pressing part, it is possible to prevent misalignment of the pressing direction between the center core and the magnetic recording disk, and to obtain stable adhesive strength.

C. Conventional technology Conventionally, as a bonding device for this type of magnetic recording disk,
A device as shown in FIG. 15 is known.

This bonding apparatus is known to include a lower jig 2 disposed around the periphery of a rotary table 1 and a lower jig 5 disposed above the lower jig 2. The upper jig 5 includes an air cylinder section 5A, a piston loft section 5B, and a piston loft section 5.
It is composed of a pressing part 5C fixedly provided at the lower end of B.

When adhering the magnetic recording disk 4 to the center core 3 using such a conventional device as shown in FIG. 14, first the center core 3 is placed on the upper end surface of the lower jig 2, and then After applying an adhesive to the upper surface of the flange portion 3a formed at the periphery of the magnetic recording disk 4, the magnetic recording disk 4 is placed thereon. Next, the air cylinder section 5A is driven to lower the press section 5C, and the adhesion is completed by applying pressure for a predetermined time.

In addition, as another conventional example, Japanese Patent Application Laid-Open No. 62-184674
The technique described in the publication is known. In this conventional example, a thermoplastic adhesive is applied to the flange part of the center core (hub), the adhesive ring is cooled, a magnetic recording disk is mounted, and the magnetic recording disk and adhesive are subjected to pressure and ultrasonic waves. It is designed to provide vibrations.

Problems to be Solved by the Invention However, such conventional examples have the following problems.

That is, in the conventional example in which the lower jig was provided with an air cylinder section, there was a problem in that the pressing section 5C was displaced in the horizontal direction as indicated by & in FIG. 15. For this reason, there was a problem that the center core and the magnetic recording disk could not be adhered concentrically.

In addition, since a driving means such as an air cylinder is used,
The problem is that the pressing force is not constant and the accuracy of the pressing between the center core and the magnetic recording disk is poor. Furthermore, since the device includes an air cylinder, it is difficult to move the air vibrator or the like along with the rotation of the rotary table, resulting in an increase in the size of the device.

Further, even in the conventional example in which pressure and ultrasonic vibration are applied to the bonding position between the center core and the magnetic recording disk, there are problems such as lateral displacement of the magnetic recording disk and deterioration of the bonding accuracy.

The present invention was devised in view of the above-mentioned problems, and is capable of preventing lateral displacement of a magnetic recording disk with respect to a center core, improving crimping accuracy, and making the device more compact. The object of the present invention is to provide a magnetic recording disk adhesive device that can be used to bond magnetic recording disks.

Means for Solving Problem E1 Therefore, the present invention provides a rotary table with a plurality of lower jigs on which center cores coated with adhesive are placed, and a center core placed on the lower jigs. A lower jig is provided, which is paired with the lower jig and is capable of pressing the bonding position between the center core and the magnetic recording disk while the magnetic recording disk is placed on the core, and the upper jig is a toggle. It has a mechanism part and a pressing part which is pivotally supported at the movable lower end of the Fuki toggle mechanism part and which can be raised and lowered by moving up and down on a guide rail erected on the rotary table, and by driving the toggle mechanism part. The solution is to lower the pressing part.

The pressing part of the F4 jig moves up and down on a predetermined trajectory along the guide rail, and presses the magnetic recording disk without causing lateral vibration by driving the toggle mechanism part. Note that by fixing the toggle mechanism section at the activated position, the pressure applied by the suppression section to the magnetic recording disk side becomes constant, making it possible to obtain stable pressure.

12, an adhesive applicator 13, a disc 4 adhesive device 14, a center core 3. It is roughly configured to include a handling arm section 15 for transporting the disk 4, etc., and counterclockwise around the handling arm section 15 there are a parts feeder 11.glue applicator 13. Adhesive device +4. The disk supply units 12 are sequentially arranged at positions forming an angle of approximately 90 degrees.

G. Example Hereinafter, details of the magnetic recording disk bonding apparatus according to the present invention will be explained based on an example shown in the drawings.

G+, Overview of Configuration of Embodiment This embodiment is to be incorporated into a main unit A as shown in FIG.

This main unit A includes a parts feeder 11 that supplies a center core 3, a disk supply unit Gt that supplies a magnetic recording disk (hereinafter referred to as a disk) 4, and a parts feeder configuration.First, the parts feeder 11 has a large number of center cores. 3~
3, and a linear feeder Ilb which sequentially slides and feeds the center core 3 from the container part 11a.
At the terminal end 11c of the center core 3, the center core 3 can be kept on standby at all times with its upper surface exposed.

G3. Structure and operation of adhesive applicator The adhesive applicator 13 includes a horizontally arranged rotary table I6 and eight centers arranged at equal intervals along the periphery of the rotary table 16. Core mounting tables 17 to 17, center core heating section 181818, and adhesive application section 1
It is roughly composed of 9. Furthermore, 20 in Figure 1 is
This is a center core detection sensor that detects whether or not the center core 3 is placed on the center core placement table 17.

The eight center core mounting tables 17 to 17 provided on the rotary table 16 are ST, to ST, shown in FIG.
is set to move. At the position ST, the arm +5a of the /XX human ring arm 15 supplies the center core 3 waiting at the terminal end 11c of the linear feeder 11b, or discharges the center core 3 coated with adhesive. It has become. As shown in FIG. 1, a center core detection processor 20 is disposed at the ST2 position, and
It is detected whether or not the center core 3 is placed on the center core 7. At positions ST3 to STs (tail and center core heating as shown in FIG. 4), 818 are respectively disposed.

The center core heating section 18 includes a support column 22 erected on a base 21 of the adhesive coating device 13 and an elevating movable section 23. , a sliding rail 2 that guides the vertically movable part 23
4 has been installed.

The elevating and lowering movable part 23 includes a sliding part 25 held so as to be in sliding contact with the above-described sliding rail 24, and a sliding part 25 that is held in sliding contact with the sliding rail 24 described above.
and a heating section 26 provided integrally with the heating section 26.
is equipped with a heater 27 facing the upper surface of the center core mounting table 17 and a temperature sensor (not shown), and is controlled to heat to a predetermined temperature.

Further, a spring 28 is attached to the lower end of the sliding part 25 and the upper part of the support column 22.
is stretched, and the elevating/lowering movable part 23 is always urged downward. Further, an elevating and lowering operation rod 29 is pivotally supported at the lower end of the sliding portion 25, and the lower end of the rod 29 is pivotally supported at one end of a swinging arm 30 supported by an intermediate portion or a fulcrum 31. The other end of the swing arm 30 is provided with a roller 33 that comes into contact with the circumferential surface of the cam 32 due to the rotation of the eccentric cam 32.
is provided, and one end of the swinging arm 30 is raised and lowered by the rotation of the eccentric cam 32, thereby raising and lowering the raising and lowering operation rod 2.
The elevating/lowering movable part 23 is moved up and down via the reference numeral 9. The lifting and lowering operation of the lifting movable part 23 is performed by S in FIG.
Center core mounting table 1 at position T, ~S T s
The rotational operation of the eccentric cam 32 is set so that when the position ST 7 is reached, the eccentric cam 32 descends and approaches the upper surface of the table 17, and when it leaves the positions ST 3 to ST, it rises.

Further, the adhesive application section 19 is disposed at the position S T s. The adhesive application section 19 is connected to an adhesive tank 34 via a hose heater 35, as shown in FIG. A heater 3 is installed inside the adhesive tank 34.
6 and a thermo coupler (not shown) are built-in,
The adhesive is controlled at a predetermined temperature and kept in a molten state.

Further, the hose heater 35 has a built-in thermocoupler 37, which maintains the molten state of the adhesive flowing inside the hose heater 35.

The hose heater 35 is connected to the adhesive inlet 38 of the adhesive application section 19.

Further, an adhesive supply chamber 39 is formed in the adhesive application section 19 and communicates with the adhesive introduction port 38 . A cylinder chamber 40 is formed above this adhesive supply chamber 39, and a piston rod 4I passes through this cylinder chamber 40 and the adhesive supply chamber 39 in the vertical direction. A piston 42 that is slidably fitted into the cylinder chamber 40 is integrally provided at the upper part of the piston rod 41, and an adhesive discharge nozzle 43 formed at the lower part of the adhesive supply chamber 39 is installed at the lower end of the piston rod 41. A piston needle 44 for opening and closing is also provided.

Furthermore, an air flow passage 45 communicating with the Norinda chamber 40 is formed in the adhesive application section 19 .

The airflow passage 45 is provided with an electromagnetic plunger 46, which enables air to be sent into the cylinder chamber 40 and discharged from the cylinder chamber 40, thereby raising and lowering the piston 42 and discharging the adhesive. This allows the discharge nozzle 43 to be opened and closed. Note that the piston rod 41 is always urged downward by a spring 47. Also,
An orifice heater 4 is installed near the adhesive discharge nozzle 43.
8 and a thermocoupler 49 are provided, making it possible to control the temperature of the adhesive discharged from the adhesive discharge nozzle 43.

The adhesive applicator 19, which has a cut-off configuration, is movable up and down, as shown in FIG. That is, adhesive application part I9
is attached to an elevating body 51 that is slidably supported by an elevating guide rail 51 of a support column 50 erected on the side of the base 2I, and is lifted and lowered by an air cylinder section 52 provided at the upper part of the support column 50. It is possible. Therefore, the adhesive can be applied to the center core 3 on the center core mounting table 17 that has reached the position 5T11 in FIG. At this time, the center core mounting table 17 is
By rotating, it becomes possible to apply adhesive around the flange portion 3a of the center core 3.

Here, the center core mounting table I7 will be explained below based on FIG. 7.

First, there is a rotating shaft 17a extending downward from the lower part of each center core mounting table 17, and a bearing 54 is mounted in a rotating supporting cylinder 53 that is opened in the vertical direction and is provided at a predetermined position on the rotating table 16. It is rotatably fitted inside through. Furthermore, a radiation fin +7b is formed on the rotation shaft 17a, and a table portion 17c on which the center core 3 is placed is provided at the upper end of the radiation fin 17b. Furthermore, a clutch plate +7d is provided at the lower end of the center core mounting table 17. And S in Figure 3
A steno pinog motor 55 is installed on the base 21 side at the Ta position, and a pulley 56 on the motor 55 side is installed. The pulley 5S is rotated via a timing belt 57. This pulley 58 transmits rotation to a clutch shaft 59 fitted into a bearing 59 via a bearing 6o.

An elevating clutch 61 that can come into contact with the latch plate +7c is connected to the upper part of the clutch shaft 59, and the elevating clutch 61 is raised and lowered by a separately provided elevating drive mechanism (not shown). It is designed to be manipulated. Therefore, when the lifting clutch 61 rises and comes into contact with the clutch 17c, the rotation is transmitted to the rotating shaft 17a, the center core mounting table I7 rotates, and the adhesive is applied around the flange portion 31 of the center core 3. It becomes possible to do so.

The center core mounting table 17 that has undergone the adhesive application process by the adhesive application section 19 described above is ST in FIG.
Move to position 7. A coating check sensor 62 is provided at this ST7 position.

This coating check sensor 62 is shown in FIGS. 8A and 8B.
As shown, the flange portion 3 of the metal center core 3
By irradiating light onto a and detecting the reflected light, it is possible to detect whether or not the adhesive 6 is applied.

G4. Configuration and operation of adhesive device Next, the configuration of the bonding device 14 will be explained.

As shown in FIG. 1, this adhesive device 14 is disposed at a position moved 90 degrees counterclockwise from the adhesive applicator I3 with the center of the handling arm section 15 as the center.

This adhesive device 14 includes a rotary table 63, eight lower jigs 64 protruding from the upper surface near the periphery of the rotary table 63 at equal intervals, and a lower jig 64 above the lower jigs 64. 64 and an upper jig 65 provided oppositely.

As shown in FIG. 9, the upper end surface of the lower jig 64 is
It is formed along the shape of the back surface of the core 3, with a central portion 64a protruding in a circular shape, and its periphery forming a flange portion 3a of the center core 3.
It is designed so that it can come into contact with the other parts. For this reason, the lower jig 6
The center core 3 can be stably placed on the upper end surface of the core 4.

The upper jig 65 is provided on a support 68 erected on a sliding base 67 that is slidably supported by rails 66 laid in the radial direction of the rotary table 63 .

This lower jig 65 includes a toggle mechanism 11 section 69 and a pressing section 71 which is pivotally supported at the movable lower end of the toggle mechanism section 69 and which is movable up and down along a guide rail 70 laid vertically on the side surface of the support column 68. It is composed of.

The toggle mechanism section 69 is located on both sides of the upper part of the support column 68? A pair of fixed supporting plates 72.72 facing each other, and both supporting plates 72.
a connecting plate 73 installed on the upper part of the rotary table 72 in the direction toward the center of the rotary table 63; and a pressure transmitting body 74 whose intermediate part is pivotally supported by a pivot shaft 75 at the intermediate part of both support plates 72 and 72. ,
A connecting plate 73 and one end 7 of a pressure transmitting body 74 opposing the connecting plate 73
4a and a coil spring 76 compressed and interposed between the pressure transmitting member 74 and the other end 74b of the pressure transmitting body 74, and an abbreviated operating rod 77 having an intermediate portion 77a pivotally supported on the other end 74b of the pressure transmitting body 74 and a roller 78 provided on one end 77b. and pivoted to the other end 77C of the operating rod 77,
It consists of a swinging rod 79 with a pressing portion 71 pivotally supported at its lower end.

The pressing part 71 is integrally provided with a sliding part 80 that is slidably supported by the guide rail 70 of the support column 68 and is moved up and down in accordance with the operation of the toggle mechanism part 69. Further, the lower end of the pressing part 71 has a central pressing part 71a that comes into contact with the central part of the center core 3, as shown in FIG.
It is provided with a ring-shaped Franz pressing part 71b which fits the central pressing part 712L and comes into contact with the flange part 3a, and a spring 71c which biases the central pressing part 71ilL downward. Additionally, a stopper 81 is provided at the top of the sliding portion 80.
is provided with an operating lever 77, as shown in FIG.
It is set to stop pivoting at a position where the angle at the pivot point at the other end 77c exceeds 180°. Further, as shown in FIG. 12, a coil spring 93 is stretched between the pivot shaft 75 and the fulcrum shaft 79a at the lower end of the swinging rod 79.

The above-mentioned rotary table 63 slides on a non-rotating central shaft 82 and is rotatably driven by a separately provided driving means. In addition, at the top of center M82,
As shown in FIG. 9, a cam plate 83 is fixedly installed parallel to the rotary table 63. This cam plate 83 is
As shown in FIG. 1, it has a substantially heart shape, and a guide groove 83a is provided in the vicinity of the periphery of the lower surface so as to run around the periphery. A pair of guide rollers 84a, 84 are in contact with the inside of this guide groove 3a and the outer peripheral surface of the cam plate 83.
b is rotatably supported on the upper part of the sliding base 67.

Therefore, due to the rotation of the rotary table 63, the sliding base 67
travels back and forth on the rail 66, and the upper jig 65 is moved as necessary.
can be moved directly above the lower jig 64.

Further, a support 8 is provided at a predetermined position on the upper surface of the cam plate 83.
5 is erected, and a fixing member 86 is attached to the upper outer surface of this support column 85.
The operation lever 7 in the above-mentioned toggle mechanism section 69
A pressure-bonding operation plate 86 is provided which has an inclination on which a roller 78 provided at 7 travels and rises. Further, at another predetermined position on the upper peripheral edge of the cam plate 83, a release operation plate 87 is similarly provided, which has an inclination on which the roller 78 runs and descends, opposite to the action of the pressure-bonding operation plate 86.

Next, the moving positions ST, . . . , ~ST, in the adhesive device 14,
, will be explained based on FIG.

First, at the position 5TII, the center core 3 coated with adhesive by the adhesive coating device 13 is carried by the arm 15a of the handling arm 15 and placed on the lower jig 64.
placed on top. Further, at this position, the disk 4 is carried by the arm 15a from the rear disk supply section 12 and assembled with the center core 3.

At the position S T + t, a center core detection sensor and a disk detection sensor, both not shown, are arranged.
It is determined whether the center core 3 is present and whether two or more disks 4 are placed (L).

At the positions 5T13 and S'r, as shown in FIG. 1, the periphery of the cam plate 83 is the part farthest from the cam center, and is crimped to the periphery of the upper surface of the cam plate 83 at the ST+3 position. Operation panel 86, ST.

A release operation plate 87 is set at the position.

At position ST, an adhesive height detection sensor 88 is provided to detect the adhesive height when the flange portion 3a of the center core 3, the adhesive, and the disk 40 are assembled.

A non-defective product collection device 89 is disposed at the ST position to collect products that have been properly bonded.

In addition, products determined to be unsuitable by the adhesion height detection sensor 88 at the 5Tl6 position are carried to the 5T19 position, and the defective products outside the rotary table 63 are discharged to the collection box 92 by the defective product collection device 90. It has become.

Furthermore, a leftover detection sensor 91 is located at the position S'r.
is provided to detect whether or not the product has been removed from the lower jig 64.

Next, the operation of the toggle mechanism section 69 will be explained.

First, with the center core 3 coated with adhesive placed on the lower jig 64 at the position ST, the toggle mechanism section 69 is moved to the 5T13 position by the rotation of the rotary table 63.
When the roller 78 of the operating rod 77 reaches the position , the roller 78 of the operating rod 77 runs along the slope of the pressure-bonding operating plate 86, and the state shown in FIGS. 9 and 10 changes to the state shown in FIGS. 11 and 12. In the middle of such a change, the operating rod 77 and the swinging rod 79 change to 18
0", the roller 78 is raised against the tensile force of the coil spring 93. When the roller 78 is further pushed up, the center pressing part 71a of the pressing part 76 presses against the center core 3 on the lower jig 64. Abuts on the center part, Franz pressing part 7
1b, and then the flange pressing portion 71b comes into contact with the disk 4 on the flange portion 3a of the center core 3. Next, when the pivot portion at the upper end of the swinging rod 79 crosses the line connecting the pivot shaft 75 and the fulcrum shaft 79a, the pivoting is stopped by the stopper 81. At this time, the pressing part 71
However, since one end 74a of the pressure transmitting body 74 is pushed by the coil spring 76, the repulsive force of the coil spring 76 is transmitted through the pressure transmitting body 74, the operating rod 77, and the swinging rod 79. In addition to the suppressing section 71, the Franz suppressing section 71b presses the disk 4 with a constant pressure. Therefore, the adhesion height on the flan portion 3 & of each center core 3 is constant. Further, the pressing portion 71 is a guide rail 7
Since it slides on the 0 surface and does not swing in any direction other than the vertical direction, a good bonding condition can be obtained without causing any misalignment of the bonded portion.

Next, when the compression of the suppressing portion 71 is released, the rotation of the rotary table 63 causes the roller 78 to move down the release operation plate 87 at the ST4 position, thereby returning to the state shown in FIG. 10.

By the way, the handling arm section 15 has a cross-shaped arm 15a, and a suction rod +5b for attracting the center core 3 and the disk 4 is provided hanging down from the lower surface of the tip of each arm +5a.

For this reason, the handling arm section 15 is connected to the parts feeder 11. Adhesive application device 13. The center core 3 or the disk 4 is conveyed from the bonding device 14 and the disk supply section 12.

Although the embodiments have been described above, the present invention is not limited thereto, and various design changes are possible. For example, in the above embodiment, the operation of the toggle mechanism section is performed by using a roller to operate the crimping operation plate 86 and the release operation plate 87. 78 may be brought into contact with each other, or, of course, other means such as a twin rod cylinder may be used.

Effects of the Invention H As is clear from the above explanation, in the magnetic recording disk bonding device according to the present invention, since the suppressing portion moves up and down along the guide rail installed on the rotary table, the bonding portion Since there is no lateral displacement and a constant pressing force is obtained by the toggle mechanism, the crimping accuracy is high and there is an effect of enabling good adhesion.

[Brief explanation of drawings]

Fig. 1 is a plan view of an embodiment of the main unit having an adhesive device for magnetic recording disks, Fig. 2 is a schematic side view thereof, and Fig. 3 is an explanation showing the operating position of the center core mounting table in the adhesive coating device. Figure 4 is a side view of the center core heating section, Figure 5 is a cross-sectional explanatory diagram of the adhesive application section, Figure 6 is a side view of the adhesive application section, and Figure 7 is a cross section of the center core mounting table. 8A and 8B are explanatory diagrams showing the coating check sensor, FIG. 9 is a sectional view of the bonding device, FIG. 10 is a side view showing the toggle mechanism, and FIG. 11 is a side view showing the toggle mechanism. 12 is a partially sectional front view showing the toggle mechanism, FIG. 13 is an explanatory diagram showing the operating position of the rotary table in the bonding device, and FIG. 14 shows the bonding position of the center core and disk. The perspective view and FIG. 15 are cross-sectional views of a conventional example. 3... Center core, 4... Disc, 6... Adhesive, 63... Rotating table, 64... Lower jig, 65...
...Lower jig, 69...Toggle mechanism section, 70. Guide rail, 71. Pressing section. 1 - 1] Coating equipment; 8115 tons of coating equipment; 8,115 tons; Part 111
Figure 6: t day/month diagram of coating check sample Figure 8: B: Figure 7: Figure 10: Toggle (a 775 Fig. 12 #7 Pf device 1: Operation of rotating table! table t
If the value of the view map 7 and tsuf is
+Tomimi Figure 14 Figure 13

Claims (1)

[Claims] (1) A plurality of lower jigs on which center cores coated with adhesive are placed are arranged on a rotary table, and a magnetic recording disk is placed on the center core placed on the lower jigs. An upper jig is provided that is paired with the lower jig and is capable of pressing the bonding position between the center core and the magnetic recording disk, and the upper jig includes a toggle mechanism section and a movable section of the toggle mechanism section. A magnetic device characterized in that it has a pressing part that is pivotally supported at the lower end and is movable up and down along a guide rail set up on a rotary table, and the pressing part is lowered by driving the toggle mechanism part. Adhesive device for recording discs.