KR100238916B1 - Recording medium assembling apparatus - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording disk adhering apparatus for adhering a magnetic recording disk to a central core coated with an adhesive, to prevent misalignment between the center core and the magnetic recording disk in a compression direction and to obtain stable adhesive strength.

Description

Adhesive device for magnetic recording disc

1 is a plan view of an embodiment of a main body apparatus having a bonding apparatus for a magnetic recording disk.

2 is a schematic side view of an embodiment of a body apparatus.

3 is an explanatory diagram showing an operating position of the center core loading table in the adhesive application device.

4 is a side view of the central core heating portion.

5 is a cross-sectional explanatory diagram of an adhesive coating part.

6 is a side view of the adhesive coating.

7 is a sectional view of a central core loading table.

8A and 8B are explanatory diagrams showing the application check detector.

9 is a cross-sectional view of the bonding apparatus.

10 is a side view showing a toggle mechanism.

11 is a partial cross-sectional side view showing a toggle mechanism.

12 is a partial cross-sectional front view showing a toggle mechanism.

Explanatory drawing which shows the operation position of the turntable in the bonding apparatus.

14 is a perspective view showing the bonding position of the central core and the disk.

15 is a sectional view of a conventional example.

<Explanation of symbols for main parts of drawing>

3: central core 4: disk

6: glue F1: rotary table

F2: Hajig 65: Sangjig

69: toggle mechanism 70: guide rail

71: pressurization

The present invention relates to a magnetic recording disc bonding apparatus for assembling a recording medium having a recording disc and a mesocore core having an adhesive region to the recording disc.

Conventionally, an apparatus as shown in FIG. 15 is known as an adhesive apparatus for this type of magnetic recording disk.

It is known that this bonding apparatus is provided with the hagig 2 arrange | positioned at the circumferential edge of the turntable 1, and the upper jig 5 provided in the upper part of this hagg2. The upper jig 5 is composed of an air cylinder portion 5A, a piston rod portion 5B, and a pressurized portion 5C fixedly attached to the lower end of the piston rod portion 5B.

When attaching the magnetic recording disk 4 to the central core 3 as shown in FIG. 14 by using such a conventional apparatus, first, the central core 3 is placed on the upper surface of the base tool 2, and then An adhesive is applied to the upper surface of the flange portion 3a formed on the peripheral edge of the central core 3, and then the magnetic recording disk 4 is placed thereon. Next, the air cylinder portion 5A is driven to lower the pressurization portion 5c, and the bonding is completed by pressing for a predetermined time.

Moreover, as another conventional example, the technique of Unexamined-Japanese-Patent No. 62-184674 is known. In this conventional example, a thermoplastic adhesive is applied to a flange portion of a central core (hub), a ring of adhesive is cooled, a magnetic recording disk is loaded, and pressure and ultrasonic vibration are applied to the magnetic recording disk and the adhesive.

However, this conventional example has a problem described below.

That is, in the conventional example in which the upper jig includes the air cylinder portion, there is a problem that the pressing portion 5c is shifted in the horizontal direction shown in FIG. For this reason, there is a problem in that the central core and the magnetic recording disk cannot be concentrically bonded. Further, since a driving means such as an air cylinder is used, the pressing force is not constant, and there is a problem in that the compression accuracy between the center core and the magnetic recording disk is poor. Moreover, since it has an air cylinder, it is difficult to move an air pipe etc. with the rotation of a rotary table, and the apparatus was enlarged.

In addition, even in the conventional example in which pressure and ultrasonic vibration are applied to the bonding position between the central core and the magnetic recording disk, there is a problem that the magnetic recording disk is misaligned and the deterioration of the compression accuracy is caused.

SUMMARY OF THE INVENTION The present invention has been devised in view of the above problems, and provides an apparatus for adhering a magnetic recording disk to prevent lateral misalignment of the magnetic recording disk with respect to the central core, to improve the compression accuracy, and to further reduce the size of the apparatus. To get.

Accordingly, the present invention provides a magnetic recording disk bonding apparatus for assembling a recording medium having a recording disk and a central core having an adhesive coating adhesive region to the recording disk, comprising: a horizontal base member, a support member provided on the base member; A core loading table fixed on a base member for carrying a central core, means for arranging a recording disc on an adhesive area of the central core located on the core loading table, from the core loading table and the core loading table. A pressing portion slidably installed on the supporting member for vertical movement along the supporting member away from the pressing portion, and downwardly exerting the pressing portion on the recording disk against the adhesive area of the central core for engaging the recording disk on the central core. To keep the pressure constant An actuator having elastic knitting means for elastically knitting the pressing portion with respect to the attachment area of the angular core, wherein the central core is formed along a cylindrical central portion having a circular top surface and along a lower end of the cylindrical central portion and having an adhesive applied region; A peripheral hole having a diameter for accommodating a central portion of the central core, wherein the pressing portion has an annular bottom surface for pushing the peripheral flange portion against the core loading table; A cylindrical housing having a cylindrical housing, a central pressing unit arranged for sliding in the cylindrical housing and having a circular bottom surface for pushing the central portion of the central core against the core loading table, and pressing the circular pressing unit toward the core loading table. With a spring.

The present invention also provides a cylindrical center portion having a circular top surface and a central core having a peripheral annular flange portion formed along a lower end of the cylindrical central portion and having an adhesive-coated adhesive region for a recording disc and a diameter for accommodating the central portion of the central core. A magnetic recording disk bonding apparatus for assembling a recording medium having a recording disk having a central hole having a center hole, comprising: a horizontal base member, a core loading table fixed on a base member for carrying a central core, and the core loading table Means for arranging the recording disc on the adhesive area of the central core at a position thereof and supported for vertical movement away from the core loading table and the core loading table, the annular lower end for pressing a peripheral flange against the core loading table; Cylindrical housing with face, A pressurizing portion disposed for sliding in the cylindrical housing and having a central pressurizing portion having a circular lower cross section for urging the central portion of the central core against the core loading table, and a spring for pressing the circular pressing portion toward the core loading table; And an actuator for moving the pressing section downward to push the recording disk against the attachment area of the central core to couple the recording disk to the central core.

The pressing section of the upper jig moves up and down a predetermined track along the guide rail and pressurizes the magnetic recording disk without causing lateral fluctuation by driving operation of the toggle mechanism section. In addition, since the toggle mechanism portion is fixed at the operated position, the pressure exerted on the magnetic recording disk side by the pressing portion becomes constant and it is possible to obtain stable pressurization.

EMBODIMENT OF THE INVENTION Hereinafter, the detail of the sticking apparatus of the magnetic recording disk which concerns on this invention is demonstrated based on the Example shown in drawing.

This embodiment is assembled to the main body apparatus A as shown in FIG.

The main body apparatus A includes a disk supply part 12 and an adhesive coating device 13 for supplying a component supply feeder 11 for supplying the central core 3 and a magnetic recording disk (hereinafter referred to as a disk) 4. And a manual arm portion 15 for conveying the bonding apparatus F of the disk 4, the center core 3, the disk 4, and the like, with the manual arm portion 15 as the center. By counterclockwise rotation, the component feed feeder 11, the adhesive application device 13, the bonding apparatus F, and the disk supply part 12 are arrange | positioned in sequence at the position which makes about 90 degrees.

First, the component feed feeder 11 includes a container portion 11a that houses a plurality of central cores 3 and a linear feeder 11b that slides and moves the central core 3 in this container portion 11a in turn. In the end portion 11c of the linear feeder 11b, the center core 3 is allowed to stand by at all times while the upper surface is exposed.

The adhesive applying device 13 includes eight central core stacking tables 17 and a central core heating unit 18 which are horizontally arranged on the swivel table 16 and along the circumferential edge thereof and cast on the swivel table 16 at equal intervals. And the adhesive coating unit 19. In addition, 20 in the 1st middle is a center core detection detector which detects whether the center core 3 is loaded on the center core loading table 17, or not. The eight central core mounting tables 17 provided on the swivel table 16 are set to move the positions of ST1 to ST8 shown in FIG. In the position of ST1, the central core 3 waiting to be supplied to the end portion 11c of the linear feeder 11b is supplied by the arm 15a of the manual arm portion 15, or the central core to which the adhesive is applied ( 3) to be assigned. At the position of ST2, as shown in FIG. 1, the center core detection sensor 20 is arranged in an arrangement, and it is detected whether or not the center core 3 is loaded on the center core loading table 17. FIG. The center core heating part 18 as shown in FIG. 4 is arrange | positioned at the position of ST3-ST5, respectively.

The adhesive application portion 19 is positioned to detect the presence of the adhesive 6 applied on the flange portion 3a of the central core 3 located at the position of ST6. The application check detector 62 is positioned to detect the presence of the adhesive 6 applied on the flange portion 3a of the central core 3 located at the position of ST7. In the position of ST8, the central core 3 is carried by one of the manual arm portions 15 from the adhesive applicator 13 to the bonding device 14. This center core heating part 18 is comprised with the support | pillar 22 and the lifting movable part 23 which were installed in the base frame 21 of the adhesive agent application apparatus 13, and opposes the rotating table 16 of the support | pillar 22. The sliding rail 24 which guides an up-down direction to the lifting movable part 23 is provided in the side surface. In addition, the lifting movable part 23 is formed of a sliding part 25 held so as to slide on the sliding rail 24 and a heating part 26 provided integrally with the sliding part 25, and the heating part 26 is The heater 27 which opposes the upper surface of the center core loading table 17, and the thermometer which are not shown are provided, and it is controlled to heat to predetermined temperature.

Moreover, the spring 28 hangs tightly on the lower end of the sliding part 25 and the lower part of the support | pillar 22, and the lifting movable part 23 is always biased downward. In addition, the lower end of the sliding portion 25 is supported by the lifting operation rod 29, and the lower end of the rod 29 is supported by one end of the swinging arm 30 whose intermediate portion is supported by the point 31. The other end of the swinging arm 30 is provided with a roller 33 which abuts the circumferential surface of the cam 32 by transmission of the eccentric cam 32. The swinging arm 30 is rotated by the rotation of the eccentric cam 32. As one end of the elevating member moves up and down, the elevating movable portion 23 is elevated via the elevating operation rod 29. The lifting operation of the lifting movable unit 23 descends when the central core loading table 17 reaches the positions ST3 to ST5 in FIG. 3 and approaches the upper surface of the table 17, and the positions of ST3 to ST5. Rotation operation of the eccentric cam 32 is set to rise when leaving.

Moreover, the adhesive agent coating part 19 is arrange | positioned at the position of ST6. This adhesive application part 19 is connected via the adhesive tank 34 and the adhesive hose 35 as shown in FIG. The heater 36 and a thermocouple (not shown) are built in the adhesive tank 34, and the adhesive is controlled to a predetermined temperature and the molten state is retained.

Moreover, the heater 37 is built in the adhesive hose 35, and the melt | fusion state of the adhesive which flows in the said adhesive hose 35 is maintained. And the adhesive hose 35 is connected to the adhesive introduction port 38 of the adhesive application part 19. As shown in FIG.

Moreover, the adhesive injector 19 is provided with the adhesive supply chamber 39 which communicates with the said adhesive introduction opening 38. As shown in FIG. A cylinder chamber 40 is formed above the adhesive supply chamber 39, and a piston rod 41 penetrates the cylinder chamber 40 and the adhesive supply chamber 39 in the vertical direction. An upper part of the piston rod 41 is integrally provided with a piston 42 which is slidably inserted into the cylinder chamber 40, and a lower end portion of the adhesive discharge nozzle 43 formed below the adhesive supply chamber 39. The piston needle 44 which opens and closes is provided.

Moreover, the air injector 45 which communicates with the said cylinder chamber 40 is formed in the adhesive injector 19. As shown in FIG. In addition, the air passage 45 is provided with an electronic plunger 46, which enables the delivery of air into the cylinder chamber 40 and the discharge of the air in the cylinder chamber 40, thereby raising the piston 42. The opening and closing of the adhesive discharge nozzle 43 is made possible. In addition, the piston rod 41 is always biased downward by the spring 47. Moreover, the orifice heater 48 and the thermocouple 49 are provided in the vicinity of the adhesive discharge nozzle 43, and it becomes possible to suppress the temperature of the adhesive discharged from an adhesive discharge nozzle.

The adhesive injector 19 having such a configuration is capable of lifting up and down as shown in FIG. That is, the adhesive application part 19 is attached to the lifting clutch 61 slidably supported by the lifting guide rail 66 of the support 50 installed upright on the base frame 21 side via the sliding part 51. It is possible to move up and down by the air cylinder 52 provided in the upper part of the support | pillar 50. FIG. For this reason, the application | coating of an adhesive agent can be performed by the adhesive injector 19 lowered by the drive of the cylinder 52 to the center core 3 on the center core loading table 17 which reached the position of 6T6 during the 3rd time. At this time, the center core loading table 17 can rotate and apply | coat an adhesive to the flange part 3a of the center core 3 while rotating.

Here, the center core loading table 17 is demonstrated based on FIG.

First, the lower part of each center core loading table 17 is the rotating shaft 17a extended below and the bearing 54 in the up-and-down rotational support cylinder 53 provided in the predetermined position of the swivel base 16, 54 The inside is rotatably inserted through). Moreover, the heat radiation fin 17b is formed on the rotating shaft 17a, and the upper end part on the heat radiation fin 17b is provided with the table part 17c which mounts the center core 3. As shown in FIG. Moreover, the clutch board 17d is provided in the lower end of the center core loading table 17. As shown in FIG. And the stepping motor 55 is equipped in the base frame 21 side of ST8 position in FIG. 3, The pulley 58 is moved through the pulley 56 and the timing belt 57 by the motor 55 side. It is supposed to rotate. The pulley 58 transmits rotation to the clutch shaft 59 which is fitted to the clutch shaft 59 via the bearing 60. The upper and lower clutches of the clutch shaft 59 are provided with a lift-up clutch 61 which is able to contact the clutch plate 17d, and the lift-up clutch 61 is a lift drive mechanism (not shown) separately provided. Lifting operation is supposed to be. For this reason, when the lifting clutch 61 raises and contacts the clutch plate 17d, rotation is transmitted to the rotating shaft 17a, the center core loading table 17 rotates, and the flange part 3a of the center core 3 is rotated. It becomes possible to apply | coat, rotating a glue on).

The center core loading table 17 which has undergone the adhesive application process by the above-described adhesive injector 19 moves to the ST7 position in FIG. At this ST7 position, the coating check detector 62 is arranged. The application inspection detector 62 irradiates the flange portion 3a of the central core 3 made of metal and detects the reflected light as shown in FIGS. 8A and 8B to detect the presence or absence of the application of the adhesive 6. It is to be detected.

Next, the structure of the bonding apparatus F is demonstrated.

As shown in FIG. 1, this bonding apparatus F is arrange | positioned at the position which moved 90 degrees counterclockwise from the adhesion | coating application apparatus 13 centering on the center of the manual arm part 15. As shown in FIG. This bonding apparatus F is provided on the upper surface of the rotary table F1 and the upper surface of the rotary table F1 near the periphery, respectively, at equal intervals. It consists of an upper jig 65 provided facing the F2.

As shown in FIG. 9, the upper end surface of the leg rest 2 is formed along the back shape of the center core 3, and the center part F21 protrudes circularly, and the peripheral edge is a flange part of the center core 3 (3a) is able to contact. For this reason, the center core 3 can be stably mounted on the upper end surface of the leg rest 2. For this purpose, the hajig F2 has an annular peripheral shoulder F22 formed along the center portion F21 and the lower end of the center portion F21.

The upper jig 65 is attached to the support | pillar 68 standing up on the sliding base body 67 slidably supported by the rail 66 provided in the radial direction of the rotary table F1.

The upper jig 65 is supported by the toggle mechanism 69 and the lower end of the movable portion 69 of the toggle mechanism 69, and is capable of lifting up and down along the guide rail 70 provided in the vertical direction on the side of the support 68. It consists of).

The toggle mechanism 69 is hypothesized on a pair of support plates 72 opposed to each other and fixed to the upper both sides of the strut 68 and a portion in the center direction side of the turntable F1 on the upper portions of the support plates 72. One end of the connecting plate 73, the pressure transmitting member 74 whose intermediate portion is supported by the shaft support shaft 75 at the middle of both supporting plates 72, and the connecting plate 73 and the pressure transmitting member 74 opposite thereto. Nearly L-shape in which the intermediate portion 77a is supported by the coil spring 76 compressed between the 74a and the other end 74b of the pressure transmission member 74, and the roller 78 is installed at one end 77b. It consists of the operating rod 77 and the rocking rod 79 which is received by the other end 77c of the operating rod 77, and the pressing part 71 is received by the lower end.

The sliding part 80 which is slidably supported by the guide rail 70 of the support | pillar 68 is integrally provided in the pressurizing part 71, and it is made to raise / lower according to the operation | movement of the toggle mechanism part 69. As shown in FIG. In addition, the lower end of the pressing portion 71 is connected to the central pressing portion 71a which abuts on the central portion of the central core 3, and to the flange portion 3a for externally inserting the central pressing portion 71a. The spring 71c which adds the ring-shaped flange part 71b which contact | connects and the center press part 71a downward is provided. Moreover, the stopper 81 is provided in the upper part of the sliding part 80, and as shown in FIG. 11, the angle in the bearing point in the other end 77c of the operating rod 77 exceeded 180 degrees. It is set to stop the drive at the position. In addition, between the bearing shaft 75 and the swing shaft 79 with the point shaft 79a, the coil spring 93 is tightened as shown in FIG.

The rotary table F1 is rotatably driven by a drive means that is set by sliding the central axis F4 that does not rotate. Moreover, as shown in FIG. 9, the cam board F5 is fixed and provided in parallel with the rotation table F1 in the upper part of the center axis | shaft F4. As shown in FIG. 1, the cam plate F5 has a substantially heart shape, and a guide groove 83a is provided around the peripheral edge near the bottom peripheral edge thereof. And a pair of guide rollers 84a and 84b which abuts in this guide groove 83a and the outer peripheral surface of the cam plate F5 are rotatably received on the sliding base body 67 above. For this reason, the sliding base body 67 travels back and forth on the rail 66 by rotation of the turntable F1, and the upper jig 65 can be moved directly above the lower leg F2 as needed. .

Moreover, the support rod 85 is provided in the predetermined position of the upper periphery part of the cam board F5, and the operating rod in the said toggle mechanism part 69 via the fixing member F6 to the upper outer surface of this support 85 ( A crimping operation panel 86 is formed to form an inclination in which the roller 78 installed at 77 runs and rises. Moreover, in the other predetermined position of the upper periphery of the cam board F5, the release operation board F7 which makes the inclination which roller 78 travels and descends is contrary to the action of the said crimping operation board 86. As shown in FIG.

Next, the movement positions ST11 to ST18 in the bonding apparatus 14 will be described with reference to FIG. 13.

First, at the position of ST11, the center core 3 to which the adhesive is applied in the adhesive applying device 13 is carried by the arm 15a of the manual arm 15, and is loaded on the leg J2. Moreover, in this position, the disk 4 is conveyed to the arm 15a by the disk supply part 12 mentioned later, and is assembled with the center core 3.

The center core detection sensor and the disk detection detector which are not shown in figure are arrange | positioned at the position of ST12, and it is determined whether the center core 3 is present and whether two or more disks 4 are loaded.

In the positions of ST13 and ST14, as shown in FIG. 1, the circumference of the cam plate 83 is the part farthest from the center of the cam, and the crimping operation plate F6 is located around the upper surface of the cam plate F5 at the ST13 position. The release operation panel F7 is set at the position.

In the ST15 position, an adhesion height detection detector F8 for detecting an adhesive height in which the flange portion 3a of the central core 3 and the adhesive agent and the disk 4 are assembled is arranged.

In addition, the good quality recovery apparatus F9 is arrange | positioned at the ST16 position, and the product to which normal adhesion was performed is collect | recovered.

In addition, the product judged to be inadequate by the adhesion height detection sensor F8 at the ST15 position is conveyed to ST17 position, and the defective article other than the rotation table F1 is discharged | emitted to the collection box by the defective article collection apparatus F10.

In addition, the remaining detection detector F11 is provided in the ST18 position, and it detects whether or not the product is peeled off on the hag F2.

Next, the operation of the toggle mechanism 69 will be described.

First, when the toggle mechanism 69 reaches the position of ST13 by the rotation of the rotary table F1 in the state where the central core 3 on which the adhesive is applied is applied on the hag F2 at the ST11 position, the operating rod 77 The roll furnace 78 of () travels along the inclined surface of the crimping operation board F6 and changes from the states of FIGS. 9 and 10 to the states of FIGS. 11 and 12. In the middle of such a change, the roller 78 is raised against the tensile force of the coil spring 93 until the operating rod 77 and the rocking rod 79 are 180 degrees, and the roller 78 is pushed up. The central pressing portion 71a of the pressing portion 76 abuts the central portion of the central core 3 on the hag F2 and is pushed into the flange pressing portion 71b, and then the plan of the central core 3 The flange pressing portion 71b abuts on the disk 4 on the branch portion 3a. Next, when the bearing portion has crossed the line connecting the bearing shaft 75 with the point shaft 79a to the upper end of the swinging rod 79, the driving is stopped by the stopper 81. At this time, the pressing portion 71 receives the reaction force at the side of the hag F2, but since one end portion 74a of the transfer member 74 is pressed by the coil spring 76, the repulsive force of the coil spring 76 is the pressure transfer member ( 74 is applied to the pressing portion 71 via the operating rod 77 and the swinging rod 79, and the flange pressing portion 71b presses the disk 4 at a constant pressure. For this reason, the adhesion height on the flange part 3a of each center core 3 becomes constant. Moreover, since the pressing part 71 slides on the guide rail 70 and does not cause fluctuations other than an up-down direction, the adhesion part does not produce a shift | offset | difference and a favorable adhesive state is obtained.

Next, when the pressing of the pressing portion 71 is released, the roller 78 returns to the state shown in FIG. 10 by rotating the rotary table F1 while lowering the release operation plate F7 at the ST14 position. do.

By the way, the passive arm portion 15 has a cross-shaped arm 15a, and an adsorption rod 15b for adsorbing the central core 3 and the disk 4 is provided below the lower end of each arm 15a. have. For this reason, the manual arm part 15 conveys the center core 3 or the disk 4 from the component supply feeder 11, the adhesive application device 13, the bonding apparatus F, and the disk supply part 12. It is forever.

As mentioned above, although the Example was demonstrated, this invention is not limited to this, A various design change is possible, For example, in the said Example, the operation of a toggle mechanism part is carried out by the crimping operation board F6 and the release operation board F7. (78) abuts, but other means, such as both rod cylinders, may of course be used.

As is clear from the above description, in the adhesive apparatus for the magnetic recording disk according to the present invention, since the pressing portion moves up along the guide rail installed on the rotating table, there is no lateral deviation at the bonding portion, and the toggle mechanism portion has a constant pressing force. Since it is obtained, the crimping accuracy is high, and there is an effect of enabling good adhesion.

Claims (10)

An apparatus for adhering a magnetic recording disk for assembling a recording medium having a recording disk and a central core having an adhesive-coated adhesive region to the recording disk, comprising: a horizontal base member, a supporting member provided on the base member, and a middle core A core loading table fixed on the base member for transporting the means, means for arranging the recording disc on the adhesive area of the central core located on the core loading table, and the support away from the core loading table and the core loading table. Moving the pressing portion downward to exert a pressing force on the recording disk relative to the adhesive region of the central core for engaging the recording disk on the central core with the support member for the vertical movement along the member; Bonding the central core to keep the pressure constant An actuator having elastic knitting means for elastically knitting the pressing portion against the reverse, the central core having a cylindrical central portion having a circular top surface and a peripheral annulus formed along a lower end of the cylindrical central portion and having an adhesive coating area A cylindrical portion having a flange, the recording disc being formed into a central hole having a diameter for accommodating a central portion of the central core, wherein the pressing portion has a cylindrical shape having an annular bottom surface for pushing a peripheral annular flange portion against the core loading table; A housing, a central pressing portion disposed for sliding in the cylindrical housing and having a circular bottom surface for pushing the central portion of the central core against the core loading table, and a spring for pressing the circular pressing portion toward the core loading table; Magnetic recording disc, characterized in that Adhesive device. 2. The apparatus of claim 1, wherein the pressing portion is connected to the supporting member through a sliding portion, and the sliding portion vertically reciprocates along a guide rail formed on the supporting member. 2. The apparatus of claim 1, wherein the actuator comprises a toggle operating means having an operating rod connected to move the pressing section to push the recording disk against the adhesive area of the central core. 4. The actuating lever according to claim 3, wherein the toggle actuating means has an actuating lever having an upper end pivoted on the operating rod and a lower end pivoted on the pressing section, and an actuating lever at a fixed center position where the pressing section pushes the recording disc against the attachment area of the central core. And a means for moving the operating rod to bring the magnetic recording disc. 5. The coil knitting means according to claim 4, wherein the elastic knitting means includes a coil spring for elastically pressing the operating rod toward the core loading table to absorb the reaction force applied from the pressing portion from the core loading table when the operation lever is in the fixed center position. A magnetic recording disc bonding apparatus. A central hole having a cylindrical central portion having a circular top surface and a peripheral core formed along a lower end of the cylindrical central portion and having a peripheral annular flange portion having an adhesive-coated adhesive region for the recording disc and a central hole having a diameter for receiving the central portion of the central core; An apparatus for adhering a magnetic recording disk for assembling a recording medium having a recording disk formed thereon, the apparatus comprising: a horizontal base member, a core loading table fixed on the base member for carrying a central core, and a center positioned on the core loading table Means for arranging the recording disc on the adhesive area of the core, and supported for vertical movement away from the core loading table and the core loading table, and having an annular bottom surface for pushing the peripheral flange portion against the core loading table. Cylindrical housing and the cylindrical housing A pressurizing portion disposed for sliding within and having a central pressurizing portion having a circular bottom surface for pressing the central portion of the central core against the core loading table, and a spring for pressing the circular pressing portion toward the core loading table; And an actuator for moving the pressing portion downward to push the recording disk against the attachment area of the central core to couple the recording disk to the central core. 7. The magnetic recording disc is bonded according to claim 6, wherein the pressing portion is connected to a supporting member mounted on the base member by sliding, and the sliding portion is vertically reciprocated along a guide rail formed on the supporting member. Device. 8. The magnetic recording disk as claimed in claim 7, wherein the actuator comprises a toggle operating means having an operating rod having an operating rod connected to move the pressing section to push the recording disk against the attachment area of the central core. Gluing device. 9. The toggle lever according to claim 8, wherein the toggle actuating means includes an actuating lever having an upper end pivoted on the operating rod and a lower end pivoted on the pressing section and a pressurizing section at a fixed center position for pushing the recording disc against the attachment area of the central core. And a means for moving the operating rod to bring it back. 10. The magnet as claimed in claim 9, wherein the actuator includes a spring for elastically pressing the operating rod toward the core loading table so as to absorb the reaction force applied from the core loading table to the pressing portion when the operation lever is in the fixed center position. Adhesive device for recording discs.