JPS6310362A - Assembling device for annular member - Google Patents

Abstract

PURPOSE:To load an annular member smoothly, without fail and in a non- contacting condition to a rotating shaft by holding a sucking member in the same shaft condition as the rotating shaft with a positioning member and inserting the annular member to the rotating shaft. CONSTITUTION:When the coincidence of the shaft line of a positioning member 8 and a spindle 2 is executed, the shaft line of a holding cylinder 10 fitted on the outer surface of a cylinder part 16 in the positioning member 8 through a roller 26 is also coincident to the shaft line of the spindle 2, and a magnetic disk 1 supported at a sucking member 9 connected to the holding cylinder 10 comes to be also the condition concentric to the spindle 2. When an assembling handler 4 continues to descend in this condition, the holding cylinder 10 is fitted to the spindle 2. Thus, a magnetic disk 1 supported at the sucking member 9 provided at the tip of the holding cylinder 10 is inserted into the spindle 2 smoothly and without fail. The magnetic disk 1 keeps the condition concentric to the spindle 2, and therefore, it will not contact with the spindle 2.

Description

[Detailed description of the invention]

[Industrial Application Field 1] The present invention relates to an assembly device for an annular member, such as a magnetic disk, which is used for assembling an annular member such as a magnetic disk into a rotating shaft for rotationally driving the annular member.

[Prior Art] An annular member, for example, a magnetic disk, is inserted into a spindle as a rotating shaft in a magnetic disk device, and while rotating the spindle, a write/read head is made to face the recording layer of the magnetic disk. By doing so, information can be written into the recording layer and read out of the written information. A magnetic disk drive usually incorporates a servo disk and one or more data disks, and in order to maintain a predetermined distance between these magnetic disks, a spacer is installed between each disk. is now being intervened. When assembling such an annular member such as a magnetic disk or a spacer onto a spindle as a rotating shaft, in order to automate the assembly, a suction member that adsorbs such an annular member is attached to the handler. A device is used for the assembly. In this case, the annular member made of the above-mentioned magnetic disk and spacer, especially the magnetic disk, is used to write and read information by positioning the information writing and reading heads to accurately face each sector formed on the magnetic disk. For this reason, it is necessary to install the magnetic disk in a strictly concentric circle with respect to the spindle, and for this reason, there is a space between the inner circumference of the magnetic disk and the outer diameter of the spindle to prevent the magnetic disk from being inserted into the spindle. Usually, only a small gap is provided to make this possible. Therefore. If the spindle's take-up accuracy and the control accuracy of the position and posture of the assembly and one-piece handler are not strictly controlled, misalignment of the axis between the suction member and the spindle may occur. This makes it impossible to smoothly insert the magnetic disk into the spindle. Therefore, in order to smoothly insert a magnetic disk or the like into the spindle even in such a case, a load detection device is provided on the support part for supporting the attraction member on the handler, and while the magnetic disk is inserted by the attraction member, When a contact occurs between the magnetic disk and the spindle due to misalignment of the axes, this is detected by the load fluctuation in the load detection device described above, and the position of the magnetic disk is adjusted by moving the handler or the like based on this detection signal. Methods to do this have been known for a long time. [Problem to be Solved by the Invention 1] By the way, when foreign matter such as dust adheres to the recording layer of a magnetic disk, malfunctions occur when writing or reading information, and its lifespan is significantly shortened. , Not only during operation of the magnetic disk device but also when assembling the magnetic disk into the magnetic disk device, it must be done in a state where no dust or the like is generated. However, if the load detection device detects the contact between the magnetic disk and the spindle and adjusts the position of the magnetic disk as described above, this contact generates wear particles. There are drawbacks such as the risk of adhesion to the recording layer of the magnetic disk. The present invention has been made in view of the above points, and its purpose is to maintain the annular member in a non-contact state by keeping the axis of the annular member strictly aligned with the rotating shaft. It is an object of the present invention to provide an apparatus for assembling an annular member which can be assembled without any modification and which can reliably prevent the generation of abrasion particles. [Means for Solving Problems 1] In order to achieve the above-mentioned object, the present invention is assembled by attaching a suction member to a handler, and sucking an annular member with the suction member and driving it rotationally. In a device that is inserted into a rotating shaft, the above-mentioned assembly involves connecting a positioning member to a shaft that is tiltably supported by a handler so that it can move forward and backward, and a holding cylinder that has a suction member attached to the tip of the positioning member that attracts an annular member. A moving means is interposed between the holding cylinder and the positioning member to hold them in a coaxial state and relatively displace them in the axial direction, and the holding cylinder is assembled by the handler. It is characterized by a structure in which it is swingably connected to. [Operation 1: Assembling is performed by activating the handler, and in the previous process, for example, bringing the suction member into contact with the annular member supported by a support means such as a chuck member, suctioning the annular member, and assembling the assembly. Attachment) \Transfer the driver to a position facing the rotating shaft on which the annular member is attached. Then, in assembly, when the handler is moved in the direction in which the annular member that is attracted and supported by the suction member is inserted into the rotating shaft, the positioning member first comes into contact with the rotating shaft and the positioning member rotates. It becomes coaxial with the shaft. Therefore, in case 11, when the handler is further moved toward the rotation axis, the holding tube supported by the group A/1 handler and the suction member attached to the holding tube are displaced in the direction toward the rotation axis. but. The positioning member in contact with the rotating shaft is displaced relative to it in a direction of contraction. As a result, the holding cylinder is fitted to the rotating shaft in a coaxial state with respect to the rotating shaft,
The adsorption member and the annular member supported by the adsorption member are inserted into the rotating shaft in a non-contact state, and there is a risk of generating abrasion powder etc. when the annular member is inserted into the rotating shaft. That's not it. Furthermore, even when the suction member is removed from the rotation shaft after the annular member is attached to the rotation shaft by the suction member, the holding cylinder remains coaxial with the rotation shaft, so that it is not connected to the rotation shaft. You will be able to separate them while in contact. [Embodiments] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. First, in FIG. 1, l indicates a magnetic disk made of an annular plate, and the magnetic disk l is inserted into a spindle 2 serving as a rotating shaft in a stacked state through a spacer (not shown). It looks like this. The magnetic disk 1 is coated with magnetic material, dried, and inspected in the previous process, and its inner peripheral edge is attached to the chuck member 3 (
(see Figure 4) to support it in a chucked state,
The magnetic disk 1 is assembled so that it is supported by a handler 4 and can be detached from the chuck member 3 and inserted into the spindle 2 by means of a device 5. For assembly, the device 5 includes a positioning member 8 having a spring-loaded shaft 7 that is tiltably suspended and supported by a connecting portion 6 to the handler 4, an adsorption member 8 that adsorbs the magnetic disk 1 by vacuum adsorption, and It is composed of a holding cylinder lO that supports the suction member 8. As shown in FIG. 2, the spring push shaft 7 has a pedestal 11 connected to its tip, and an annular block 12 is installed on the pedestal ll. The steel ball 13 is fitted loosely and is biased by a spring 14.14 so that it can move within a range regulated by a pin 15.15. The steel ball 13 is held between the upper plate 6a and the lower plate 8b of the connecting portion 6 at a predetermined interval, and the spring push shaft 7 tilts and descends within this interval. It is structured so that you can do it. Next, the positioning member 8 has a cylindrical portion 1 that is slidable in its axial direction.
8, and a centering rod 18 having a steel ball 17 attached to the tip thereof and fitted into a centering recess 2a formed in the center of the upper surface of the spindle 2 is slidably inserted into the lower side of the cylindrical portion 18. The centering rod 18 is biased in the direction of protruding from the cylindrical portion 16 by a spring 18 elastically loaded between it and the partition wall 18a of the cylindrical portion 18, and a stopper fixed to the lower end of the cylindrical portion 16 is pressed. It is designed to protrude to a position where it comes into contact with 20. In addition, the aforementioned partition wall l
A spring 21 is interposed between ea and the tip of the spring pushing shaft 7, and the spring 21 biases the cylindrical portion IB in the protruding direction.
is slidably displaced between an extended position in which it abuts against a step 29a of a connecting plate 28, which will be described later, and a contracted position in which the spring pushing shaft 7 is deeply fitted. And cylindrical part 1
The lower end of the spindle 8 is enlarged in diameter to form an enlarged diameter portion 22 whose bottom surface abuts against the spindle 2 over a wide area in order to make the positioning member 8 as perpendicular as possible. Furthermore, the suction member 8 has a vacuum chamber 23 formed at the lower end of the holding cylinder 10, and an air pump 25 is connected to the vacuum chamber 23 via a pipe 24, and an annular opening is provided at the lower end of the vacuum chamber 23. It is constituted by forming the portion 23a. As shown in FIG. The movable member is configured to be able to roll in the axial direction along the outer circumferential surface of the movable member while maintaining mutual coaxiality. Further, shafts 27 , 27 , 27 are vertically provided on the connecting portion θ so as to be able to rise and fall, and each shaft 27 has a
At the end of the downward stroke of the holding cylinder lO and at the time of overload,
The connecting plate 28 is connected via the steel ball 2B to absorb the inclination.
The shaft 27 is connected to the connecting plate 29, and the connecting plate 29 is always urged downward by the spring 30. A step portion 29a is formed on the connecting plate 28, and a flange portion 18 formed at the upper end of the cylindrical portion 16 of the positioning member 8 is formed on the step portion 29a.
By coming into contact with b, the maximum extension state of the cylindrical portion 1B is restricted. Further, a mounting plate 31 is connected to the lower surface of the connecting plate 29, and the mounting plate 31 and the holding cylinder l
O is connected to the handler 4 by a wire spring 32, and as the steel ball 28 is tilted by the horizontal movement of the wire spring 32, the holding cylinder lO is attached to the handler 4 in a tiltable state. ing. In the figure, numeral 33 indicates a rotation prevention shaft of the cylinder portion 16 relative to the spring push shaft 7, and numeral 34 indicates a load detector for detecting overload of the holding cylinder IO. This embodiment is constructed as described above, and its operation will be explained next. First, as shown in FIG. 4, the assembly is performed by activating the handler 4 and moving the magnetic disk l, which has undergone processes such as applying and inspecting magnetic material, toward the chuck member 3 that supports it.
The assembly is carried out by attaching the device 5 to the magnetic disk 1 by bringing the adsorption member 9 of the device 5 into contact with the magnetic disk 1.
Vacuum suction is applied to the vicinity of the inner peripheral edge. At this time, for example, by positioning the centering steel ball 17 at the center position of the chuck member 3, the vacuum chamber 2 in the suction member 8 is
The opening 23a is positioned so as to be concentric with the magnetic disk l. With the magnetic disk 1 being attracted as described above, the handler 4 is moved "-y1" to take out the magnetic disk 1 from the chuck member 3 and moved to the position where the spindle 2 is disposed. In assembly, when the handler 4 is lowered, the steel ball 18 attached to the lower end of the centering rod 18 first fits into the four centering parts 2a of the spindle 2. Then, for assembly, when the handler 4 is further lowered, the centering rod 18 is displaced in the direction of advancing into the cylindrical part 18 against the spring 18, as shown in FIG.
The enlarged diameter portion 22 formed at the tip of the cylindrical portion 16 is connected to the spindle 2.
touches the top surface of the At this time, the axis of the positioning member 8 supported by the handler 4 and the spindle 2
If there is a deviation between the positioning member 8 and the axis of the spindle 2, the distal end side of the positioning member 8 is inclined so that it is aligned with the axis of the spindle 2, so that they are coaxial. Here, the cylindrical portion 16 of the positioning member 8 is assembled to the handler 4 via the holding cylinder lO.
Since it is connected to the handler 4, one assembly takes an inclined position with respect to the handler 4. A steel ball 13 is interposed between the spring push shaft 7 and the connecting portion 8, and a gap is formed therebetween, so that the center portion 7 can be easily tilted. When the axes of the positioning member 8 and the spindle 2 are aligned as described above, the axis of the holding cylinder lO fitted to the outer circumferential surface of the cylinder portion 1B of the positioning member 8 via the roller 26 is also aligned. This coincides with the axis of the spindle 2, and the magnetic disk 1 supported by the suction member 9 connected to the holding cylinder 10 also becomes concentric with the spindle 2. At this time, the holding tube 10 is assembled because the wire spring 32 configuring the connection part to the connection part 6 of the handler 4 is bent, and the connection plate 29 and the attachment plate 31 are inclined with respect to the shaft 27. , the holding cylinder 10 can be smoothly displaced to follow the positioning member 8. In this state, if the handler 4 continues to descend, the first
As shown in the figure, the holding cylinder IO is fitted into the spindle 2, and the magnetic disk l supported by the suction member 9 provided at the tip of the holding cylinder IO is inserted into the spindle 2. On the other hand, the magnetic disk l remains concentric with the spindle 2, so that it does not come into contact with the spindle 2. At this time, the cylindrical portion 16 constituting the positioning member 8 is displaced in the direction of entering the spring pushing shaft 7, but the roller 26 attached to the holding cylinder 10 is moved toward the cylindrical portion 18.
Since the rollers roll along the outer circumferential surface of the rollers, the relative displacement between them is carried out smoothly. When the magnetic disk 1 is inserted to a predetermined position on the spindle 2, the holding cylinder 1o is detached from the spindle 2 by releasing the adsorption state of the magnetic disk l by the adsorption member 8 and raising the assembly handler 4. However, it goes without saying that the holding cylinder 1O does not come into contact with the spindle 2 even at this time. In this way, by aligning the axis of the positioning member 8 with the axis of the spindle 2, the magnetic disk 1 incorporated in the spindle 2 can be held concentrically with it, so that the dimensions of the spindle 2 itself can be controlled. If done correctly, the assembly will be smooth and reliable even if the handler 4 is mounted at an angle to the base or the position and posture of the handler 4 are not controlled very strictly. In addition, the magnetic disk l, the adsorption member 8 that supports it, the holding cylinder 10, etc. do not come into contact with the spindle 2, and this assembly prevents the generation of abrasion powder during work. It will not cause any inconvenience. In the above-mentioned embodiment, the magnetic disk 1 is assembled into the spindle 2 as an annular member, but when assembling an annular member such as a spacer, this assembly is also carried out by the equipment. Needless to say, it is possible to have a distance of mm. [Advantageous Effects of the Invention 1] As detailed above, the present invention is configured such that the suction member is held coaxially with the rotating shaft by the positioning member, and the annular member is inserted into the rotating shaft. Regardless of the accuracy of the rotation shaft handling or the attitude control of the operating handler, it is now possible to reliably hold the annular member coaxial with the rotation shaft when inserting the annular member into the rotation shaft. The annular member can be smoothly and reliably attached to the rotating shaft in a non-contact manner.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the assembled device showing one embodiment of the present invention;
2 and 3 are XX and YY sectional views of FIG. 1, respectively, and FIG. 4 is a sectional view showing a different operating state from FIG. 1,
FIG. 5 is a sectional view of a main part showing still another operating state. l: Magnetic disk, 2 spindles, 4: Handler for assembly, 5: Device for assembly, 7: Spring push shaft, 8: Positioning member, 9: Adsorption member, lO: Holding cylinder, 1θ: Cylinder part, 17 :
Centering rod, 23: vacuum chamber, 26: roller.

Claims (1)

[Claims] A suction member is attached to an assembly handler, and the annular member is adsorbed by the suction member and inserted into a rotating shaft for rotationally driving the annular member, in which a positioning member is attached to the shaft tiltably supported by the assembly handler. A holding cylinder which is connected so as to be movable in a forward and backward manner and has a suction member attached to its tip that adsorbs the annular member is fitted to the positioning member, and the holding cylinder and the positioning member are placed coaxially between the holding cylinder and the positioning member. An assembling device for an annular member, characterized in that a moving means for holding and relatively displacing the annular member in the axial direction is provided, and the holding cylinder is swingably connected to the assembling handler.