JPH09318897A - Dynamic balance adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To electrically connect a rotating part and a fixed part with a simple constitution at the time of measuring and adjusting the dynamic balance of a device having the rotating part like a laser scan motor. SOLUTION: A measuring base 5 is elastically supported on a rotating table, and a laser scan motor 4 is mounted on this measuring base 5. In a station for measurement and confirmation of the dynamic balance, a contact pin mechanism to supply power to the maser scan motor 4 us provided. With respect to the contact pin mechanism, a contact pin 921 is supported on a contact pin attaching base 918, and the contact pin 921 is electrically connected to a contact of the laser scan motor 4 when a permanent magnet 919 of the contact pin attaching base 918 is magnetically stuck to a magnetization part 512 consisting of a magnetic body of the measuring base 5. Thus, power is supplied to the laser scan motor 4 without an influence of external vibration.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic balance adjusting apparatus capable of measuring dynamic balance in a rotary drive mechanism using a rotary drive source such as a motor and adjusting the balance balance thereof, and particularly to measuring the balance. The present invention relates to a dynamic balance adjusting device capable of automatically adjusting.

[0002]

2. Description of the Related Art In recent years, a laser printer capable of high-speed printing scans a photosensitive member with a laser beam to obtain a desired image pattern. A laser scanning unit is provided to perform this scanning. This laser scanning unit has a structure in which a polygon mirror, which is a polygon mirror, is rotated at a high speed by a motor. In order to form the above-mentioned image pattern with high accuracy, the rotation speed of the polygon mirror is stable at a constant speed. Need to be driven to rotate. In order for the polygon mirror to be driven to rotate stably, it is required that the dynamic balance of the polygon mirror is balanced. Therefore, in the manufacturing process of the laser scan unit, the dynamic balance of the laser scan motor composed of the polygon mirror and the motor is required. It needs to be measured and adjusted if it is out of balance.

In the conventional measurement of the polygon mirror and dynamic balance of the motor in the laser scan motor, the laser scan motor is elastically supported in at least the two-dimensional direction, and then the laser scan motor is driven to drive the motor and the polygon mirror. The dynamic balance is measured by rotating the laser beam, measuring the vibrations of the laser scan motor in each dimension, and processing the measured values.

When the dynamic balance of the laser scan motor is adjusted based on the measured dynamic balance, for example, a minute weight is placed at a position opposite to the unbalanced portion of the polygon mirror, which is the rotated portion. The method of adding is taken. As the weight, for example, a dispenser or the like is used to drop paint or resin on the portion other than the reflection surface of the polygon mirror. In this case, as a method for accurately attaching the weight to the polygon mirror, a method is used in which the operator does not observe it with the naked eye. Also,
It is also necessary to work to dry and solidify the weight we put on.

In the case of adjusting the dynamic balance as described above, conventionally, the dynamic balance measuring device and the adjusting device are separately configured, and each laser scan motor is manually set in the measuring device one by one. Then, measure the dynamic balance here,
After that, the method of setting in an adjusting device and adjusting was used. Therefore, in order to adjust the dynamic balance, there is a problem that manual work by an operator is required and processing efficiency is poor. In order to improve the processing efficiency, a plurality of adjusting devices are required, and further an operator for operating these devices is required, which is an obstacle to realizing automation.

Therefore, the present inventor has proposed a dynamic balance adjusting device capable of automatically measuring and adjusting the dynamic balance. In this adjusting device, a laser scan motor, which is an object to be adjusted, is mounted on a rotary table, and stations for measuring, adjusting, and confirming the dynamic balance are arranged around the rotary table. The correction is realized by performing each process while rotating.

[0007]

However, since the proposed device cannot measure the dynamic balance by directly attaching the measuring device to the object to be adjusted, the object to be adjusted is integrated. A measuring table that supports it is provided, and a measuring instrument is attached to this measuring table. In this case, since the measuring table is operated together with the object to be adjusted to measure the dynamic balance of the object to be adjusted, it is necessary to elastically support the measuring table on the rotary table. Therefore, the electrical wiring for driving the object to be adjusted and supplying the power for measuring the dynamic balance to the object to be adjusted must not affect the vibration of the measuring table. For this reason, it is necessary to connect wiring with a wiring material that is as flexible as possible to the object to be adjusted or the measuring table integrated with the object to be adjusted, but the object to be adjusted and the measuring table are rotated together with the rotary table. Therefore, this wiring cannot be fixedly connected to the body to be adjusted or the measuring table.

For this reason, it is necessary to make electrical connection to the object to be adjusted or the measuring table by means of a contact mechanism which is removable, but a structure for fixing and supporting the contact mechanism to the object to be adjusted or the object to be measured is required. If a clamp structure or a screw structure is used as this fixing structure, a manual attachment / detachment operation is required every time the dynamic balance is measured or confirmed, which is complicated and is not preferable for automating the apparatus.
It is also possible to drive the object to be adjusted by using an external force, but with this, the object to be adjusted and the measuring table are connected to the external mechanism, and the object to be adjusted and the measuring table are placed on the rotary table. It is not preferable because the original meaning of eliminating the influence of external force in measuring the dynamic balance by elastically supporting is eliminated.

An object of the present invention is to provide a dynamic contact mechanism having a simple structure that enables an electrical connection for supplying electric power for driving an object to be adjusted at each station for measuring and confirming dynamic balance. It is to provide a balance adjusting device.

According to the present invention, there is provided a rotary table capable of being rotationally driven by mounting a body to be adjusted for adjusting a dynamic balance, and the rotary table arranged at different rotational positions of the rotary table. It is composed of multiple stations for mounting the adjustment body, measuring the dynamic balance with respect to the adjusted body, adjusting the dynamic balance, checking the dynamic balance, and unloading the adjusted body from the rotary table. In the dynamic balance adjusting device for adjusting the dynamic balance while sequentially moving the adjusted body with respect to each station by rotating the rotary table, the station for measuring and confirming the dynamic balance of the adjusted body is An electrical connection between the electric circuit part that is detachable from the rotary table and that is provided in the device fixing part when the rotary table is mounted, and the body to be adjusted. Characterized in that it comprises a current supply mechanism for.

In a preferred embodiment of the present invention, a measuring table for supporting the object to be adjusted is supported on the rotary table by an elastic supporting member, and the energizing mechanism is configured to be attachable to and detachable from the measuring table. Further, there is provided a contact pin mechanism that is in electrical contact with a contact provided on the body to be adjusted in the mounted state. For example, the measuring table is provided with a magnetic body in a position close to the contact of the body to be adjusted, the contact pin mechanism is provided with a mounting table for supporting the contact pin, and the mounting table is magnetically attached to the magnetic body. Magnets are integrally provided. The contact pin mounting base is formed of an insulator having a reverse L-shaped side surface, a lower end portion thereof is integrally provided with a permanent magnet, and an upper end portion thereof is electrically connected to the electric circuit portion by a flexible cord. Also, one or more contact pins are supported with their tip parts facing downward, and the tip parts of the contact pins are brought into contact with the contacts of the object to be adjusted on the measurement table with the permanent magnet magnetically attached to the measurement table. To be configured.

Further, the energizing mechanism is provided with a reciprocating mechanism which is provided in the device fixing part and is capable of moving up and down. It is magnetically attached and at the same time released from the gripped state by the reciprocating mechanism. This contact pin mechanism is lowered toward the rotary table and magnetically adhered to the measuring table when the object to be adjusted is rotated to each measurement and confirmation station position as the rotary table rotates, and Electrical contact is made to. Further, the contact pin mechanism supplies electric power to the object to be adjusted to drive the object to be adjusted when electrically connected to the contact,
It is preferable to be able to measure and confirm the dynamic balance.

Particularly, in the present invention, the object to be adjusted is a laser scan motor in which a polygon mirror and a motor unit for rotationally driving the polygon mirror are integrally formed, and when the motor unit is rotationally driven. It is configured as a device that measures dynamic balance, attaches and fixes a weight for balancing, measures dynamic balance by detecting acceleration generated by rotational driving of the motor section, and confirms the dynamic balance. It is configured as an adjusting device.

[0014]

Next, embodiments of the present invention will be described with reference to the drawings. 1, FIG. 2, and FIG. 3 are a front view, a right side view, and a rear view showing an overall configuration of an embodiment in which the present invention is applied to an adjusting device for adjusting the dynamic balance of a laser scan motor. Further, FIG. 4 is a plan view thereof.
A rotary table 2 is supported in a horizontal state on a base frame 1 configured as a frame structure, and a rotary drive mechanism 3 installed in the base frame 1 causes the rotary table 2 to rotate.
Is intermittently rotated clockwise. As will be described later, the rotary table 2 has a structure in which eight unit tables 201 are equally arranged in the circumferential direction. The rotary table 2 is equally divided into eight locations on the base frame 1 on the rotary table 2. As will be described later, first to eighth stations ST1 to ST8 are provided at these positions, and the rotary table 2 is driven to rotate intermittently so that the unit tables 201 are rotated relative to these eight stations. To be done.

These eight stations ST1 to ST8
Is a loader unit (first station) S for transferring from the transport unit 8 to the rotary table 2 with respect to the laser scan motor 4 as an object whose dynamic balance is measured and adjusted.
T1, a measuring unit (second station) ST2 for measuring the dynamic balance of the transferred laser scan motor 4, and a first adjusting unit for dropping resin as an adjustment weight onto a part of the measured laser scan motor. (3rd station) S
T3, a first fixing portion (fourth station) ST4 for curing and fixing the applied weight by ultraviolet light, and a second adjustment for drip-adhering the adjustment weight resin to another part of the laser scan motor 4. Department (5th station) ST5,
A second fixing unit (sixth station) ST6 that cures and fixes this by ultraviolet light, and a confirmation unit (the seventh unit) for confirming whether the adjustment of dynamic balance is proper after the above steps.
Station) ST7, and an unloader section (eighth station) ST8 for transferring the adjusted laser scan motor 4 to the transport section 8.

Further, on the base plate 1 at a position adjacent to the rotary table 2, a laser scan motor 4 is reciprocally transported by being extended from an external transport means (not shown) to a position near the rotary table. Transport section 8 for
The transfer section 8 is provided with a transfer robot 801 for transferring the laser scan motors 4 one by one between the transfer section 8 and the loader section ST1 and the unloader section ST8. The transfer unit 8 is configured such that a shuttle 803 is reciprocally moved on an extended rail 802, and the laser scan motor 4 in which balance adjustment is performed by the shuttle 803 or the laser scan motor 4 in which balance adjustment is performed is performed. Are transported on the rail 802. Although the detailed description of the transfer robot 801 is omitted, a rotation mechanism 804 that horizontally rotates on the base frame 1 and an arm 805 that is provided on the rotation mechanism 804 and that is vertically and horizontally moved arbitrarily. And a finger 806 provided at the tip of the arm 805 and capable of gripping the laser scan motor 4, and its drive is controlled by the control circuit 14 described later. It should be noted that the reference numeral 15 in FIGS. 1 to 3 is an indicator lamp for displaying the state in which the adjustment work is being performed with colored lights such as red and blue.

Here, the function of the above-mentioned adjusting device will be outlined. FIG. 5 shows the dynamic balance measurement performed in each of the above-mentioned eight stations ST1 to ST8.
It is a figure which shows adjustment conceptually. Further, FIG. 6 is a flow chart showing an outline of the process of adjusting the dynamic balance over each part. The measuring table 5 is supported on the rotary table 2 by an elastic measuring table support 203 in a floating state.
After the laser scan motor 4 is mounted on the measuring table 5 in the loader section ST1, the laser scan motor 4 is energized in the measuring section ST2 to make the polygon mirror 40
6 is driven to rotate. Further, the measuring table 5 is provided with accelerometers 507 and 508 for measuring the vibration of the measuring table 5 in the horizontal direction (X direction, Y direction) and the vertical direction, and when the polygon mirror 406 is driven to rotate. The vibrations generated in each are measured. Further, the measuring table 5 has a photo sensor 5 for detecting the number of rotations of the polygon mirror 406.
10 are provided. Then, a computer as the control circuit 14 performs an operation based on the measured vibration and rotation speed, measures the dynamic balance of the laser scan motor 4, and calculates the position and amount of the necessary weight attached. To be done.

Next, the first adjusting section ST3 has a dispenser 11 supported by two ball screw mechanisms, and one ball screw mechanism 1101 is used for the resin cylinder 11
06 is moved back and forth, and the ultraviolet curable resin in the resin cylinder 1106 is discharged by the other ball screw mechanism 1107 to drop the resin on the surface of the polygon mirror 406 to change the dynamic balance of the polygon mirror. At this time, the polygon mirror 406 is rotated by the positioning motor mechanism 12 based on the amount and position of the weight calculated in the measuring unit, the calculated position is made to face the dispenser 11, and then the required amount of resin is applied. Dropped. Also, the first
In the fixing unit ST4, the ultraviolet rays emitted from the ultraviolet lamp 1301 are transmitted to the polygon mirror 4 by the optical fiber 1302.
Then, the dropped resin is irradiated with ultraviolet rays to be cured and fixed.

The same applies to the second adjusting section ST5 and the second fixing section ST6. However, the resin that is dripped by the dispenser 11A shown by the chain line in FIG.
On the surface of the rotor 405 opposite the dynamic balance of 06. Further, the confirmation unit ST7 is the same as the measurement unit, and it is confirmed whether or not the dynamic balance is properly adjusted by rotationally driving the laser scan motor 4 and measuring the acceleration on the measurement table 5. .

Then, the laser scan motor 4 whose dynamic balance is properly adjusted is carried out to the carrying section by the carrying robot 801 in the unloader section ST8. The above-described steps are repeated again while the laser scan motor 4 which is not properly adjusted is mounted on the rotary table 2. The dynamic balance is adjusted by either one of the two-sided balance adjustment in which a weight is attached to the upper surface side of the polygon mirror and the upper surface side of a rotor, which will be described later, for rotationally driving the polygon mirror, as described above. In some cases, one-sided balance adjustment in which weight is applied only to the surface is performed, and in this case, after the steps of the first fixing section ST4 are completed, the steps of the second adjusting section ST5 and the second fixing section ST6 are allowed to pass and confirmed. The process is transferred to the section ST7.

Here, the above-mentioned laser scan motor which is adjusted in the apparatus of the present invention will be described. As shown in the plan view and sectional view in FIGS. 7 (a) and 7 (b),
In the laser sgan unit 4, a circuit board 402 is arranged on a motor base 401, and a rotating shaft 403 is rotatably supported by a bearing 404 so as to penetrate the circuit board 402. A rotor 405 composed of a magnet and a polygon mirror 406 are axially mounted side by side at the tip of the rotary shaft 403, and are fixed to the rotary shaft 403 by a holding spring 407. Further, a preload spring 408 and a spring retainer plate 409 for biasing a thrust force on the rotary shaft 403 are fixed to the base end portion of the rotary shaft 403 on the opposite side. A coil 410 is fixedly supported on the circuit board 402 so as to face the rotor 405. The coil 410 and the rotor 405 constitute a motor unit that generates a rotational driving force. The rotary shaft 403 is rotated to rotate the polygon mirror 40.
6 is rotationally driven. In addition, the circuit board 402 has an IC for controlling a current flowing through the coil 410.
(Integrated circuit) 411 is mounted and a plurality of contacts 4 electrically connected to this IC are provided on a part of the surface thereof.
13 are arranged. A drive circuit (not shown) for rotationally driving the laser scan motor 4 is electrically connected to the contact 413 as described later. Further, the motor base 401 and the circuit board 402 are provided with a positioning hole 414 at the same position, and a positioning pin 506 which is erected on the measuring table 5 described later is inserted therein.

As shown in the plan view of FIG. 8, the rotary table 2 is formed of a plate member having a shape close to a trapezoid.
Each of the unit tables 201 is equally arranged along the peripheral edge of the center rotary plate 202 of the rotary table 2 which is horizontally rotated by the rotary drive mechanism 3, and each short side portion thereof is the same as the above. Center rotating plate 20
It is fixed to 2 and is rotated integrally with this. The unit table 201 has an enlarged plan view as shown in FIG.
Measuring table supports 203 made of elastic material are fixed to the four corners of the upper surface, and the four corners of the measuring table 5 described later are supported by these supports 203, and the measuring table is elastically supported horizontally on the unit table 201. can do. Here, a rubber sponge in which a large number of bubbles are formed is used as an elastic material forming the support body 203, a square groove 204 for receiving a corner portion of a measuring table is formed on the upper surface, and a bottom surface is formed on the bottom surface. The support piece 205 is adhered, and the support piece 205 is fixed to the rotary table 2 by screwing.

Further, in a region corresponding to directly below the supported measurement base 5, there are six pin insertion holes 2 for vertically inserting a positioning pin and a height regulating pin of a lifting mechanism 6 which will be described later.
06 is opened. Further, at a position corresponding to a side edge of the supported measuring table, a cord 21 which is flexible with respect to the measuring table is provided.
A contact plate 207 electrically connected by 9 is fixed, and the contact plate 207 has four sensor contacts 2 on the surface thereof.
08 and two accelerometer contacts 209 are formed.
A lock mechanism 210 is provided on the rotary table 2 adjacent to the contact plate 207. The lock mechanism 210 includes a lock pin 211 movably supported in a horizontal direction, a lever 212 for moving the lock pin 211 toward the measuring table, and a spring for urging the lever 212 to a retracted position. 213, and the lever 212 is attached to the spring 213 by a lock cylinder described later.
By rotating against the force, the lock pin 211 can be moved toward the measuring table and can be fitted into a lock hole provided in the measuring table as described later.

The measuring table 5 on which the above-mentioned laser scan motor 4 is mounted is shown in FIGS. 10 (a), 10 (b) and 10 (c) as a plan view, a partially broken front view and a right side view, respectively. In addition, the four corners are supported by the measuring table support 203 of the rotary table 2, and the rectangular plate member is supported substantially horizontally and elastically on the rotary table 2. This measuring table 5
A positioning hole 502 having a bush 501 which is fitted to the tip of a positioning pin of an elevating mechanism, which will be described later, is formed at the position of the pin insertion hole 206 of the rotary table 2 from below to above. Further, a circular recess 503 is formed substantially in the center of the measuring table 5, and an annular permanent magnet 504 is supported by a fixed disc 505 on the inner bottom surface of the recess 503. The concave portion 503 can receive the base end portion of the rotary shaft 403 of the laser scan motor 4,
In that state, the spring retainer plate 409 attached to the base end of the rotary shaft 403 is magnetically attached by the permanent magnet 504,
The laser scan motor 4 is fixedly supported on the measuring table 5. In addition, the measurement table 5 at a position away from the recess 503
Positioning pins 506 are erected on the surface of the laser beam, and the positioning holes 414 formed in the laser scan motor 4 are positioned.
To prevent the laser scan motor 4 from moving in the rotational direction on the measuring table 5.

Further, on the measuring table 5, accelerometers 507, 508 for measuring the horizontal acceleration and the vertical acceleration generated on the measuring table 5 are fixedly supported. Further, a sensor substrate 509 is erected on the surface of the measuring table 5 adjacent to the recess 503, and a reflection type photosensor 510 is supported on the sensor substrate 509.
The photosensor 510 has its support position specified so as to face the circumferential side surface of the rotor 405 of the laser scan motor 4 mounted on the measuring table 5, and is formed on a part of the circumferential side surface of the rotor 405. The existing mark 412 is optically detected, and the rotational state of the rotor 405, such as the rotational speed and rotational position, is detected from the detection result.

A lock piece 511 made of a ferromagnetic material is fixed to the other part of the measuring table 5 with a screw.
A lock hole 512 is formed in the lock piece 511 toward the side surface of the measuring table 5. When the measuring table 5 is supported on the rotary table 2, the lock hole 512 is positioned to face the lock pin 211 of the rotary table 2. It When the lock pin 211 is projected against the elastic force of the spring 213, the tip of the lock pin 211 is locked by the lock hole 512.
And the measurement table 5 is integrally fixed to the rotary table 2. A part of the lock piece 511 is exposed on the surface of the measuring table 5 to form a magnetically-attached portion 513, and a pair of small pins 514 are provided upright on both sides of the magnetic-attached portion 513. The mount is magnetically attached 513
The contact pin mount is positioned when it is magnetically attracted to.

Here, the measuring table 5 is replaced with a unit table 20.
1, the lifting mechanism 6 for switching the rotary table 2 to be integrated with the rotary table 2 or to be brought into a floating support state on the rotary table 2 will be described. FIG.
FIG. 12 is a front view showing a state when the piston is descending, and FIG. 12 is a front view showing a state when ascending. An air cylinder 601 for vertically moving a piston rod 602 is fixed to a lower portion of the base frame 1. An elevating plate 603 horizontally arranged on the rod 602 is fixed. This lift plate 603
In this, four position regulating pins 604 and two positioning pins 605 which are inserted through the pin insertion holes 206 formed in the rotary table 2 are provided upright. The upper end of the positioning pin 605 is thin so that it can be fitted into the bush 501 of the positioning hole 502 of the measuring table 5, and is formed longer than the position regulating pin 604 by the thickness of the measuring table 5. ing. The upper end surface of the position regulating pin 604 is flattened so as to support the lower surface of the measuring table 5. The elevating plate 603 is vertically moved by being guided by a guide post 607 that connects a base plate 608 and an upper plate 609 that are vertically opposed to each other.

In this lifting mechanism 6, the air cylinder 601
When the piston rod 602 is lifted by this, the lift plate 603 is lifted together with this, and the position regulating pin 604 and the positioning pin 605 which are erected on the lift plate 603 are lifted. Then, these pins are inserted through the pin insertion holes 206 provided in the rotary table 2 from the lower side to the upper side, and the upper ends of the positioning pins 605 are the positioning holes 50 of the measuring table 5.
The measurement table 5 is fitted in the second bush 501 and positioned in the plane direction. Further, the tip end surface of the position regulating pin 604 is brought into contact with the lower surface of the measuring table 5 to support the measuring table 5, and as the position regulating pin 604 is raised, the measuring table 5 is moved to a predetermined height position on the rotary table 2. That is, the measuring table 5 is lifted to a position higher than the height position normally supported by the measuring table support 203, and the position is fixed. The upper limit position of the lift plate 603 is the piston rod 60.
The tip of the second member abuts on a stopper 606 provided on a part of the base frame 1 so as to be restricted.

The second station ST2 and the seventh station
As shown in the front view of FIG. 13, a lock drive mechanism 7 for driving a lock mechanism 210 provided on the rotary table 2 is provided below the base frame 1 in the station ST7 and the eighth station ST8. To be The lock drive mechanism 7 includes an air cylinder 701.
Is supported by a column upward, and when the air cylinder 701 is driven and the plunger 702 is projected upward, the lever 212 of the lock mechanism 210 provided on the rotary table 2 is pressed upward. The operation of fitting the lock pin 211 into the lock hole 512 of the measurement table 5 is performed. This locking operation prevents the measuring table 5 on the rotary table 2 from being lifted from the rotary table 2 when the contact pin mounting table, which will be described later, is lifted from the measuring table 5 or when the laser scan motor 4 is lifted from the measuring table 5. It becomes possible to do.

Next, the details of each unit configured in each of the above-mentioned stations will be individually described. (First station: loader section) In the loader section ST1,
As shown in the flowchart in FIG. 14, the rotary table 2
A transfer robot 801 is mounted on the measuring table 5 placed on the top.
The laser scan motor 4 that is adjusted by is mounted. The laser scan motor 4 is transported to a position of the transport robot 801 by a shuttle 803 which is moved on a rail 802 from an external supply source (not shown) in the transport unit 8, and then the finger 80 of the transport robot 801 is transferred.
6 and is carried out by the associated movements of arm 805 and rotation mechanism 804.

At this time, in order to stably hold the measuring table 5 on the rotary table 2, the air cylinder 601 of the lifting mechanism 6 is driven and the lifting plate 603 is lifted. As a result, the four position regulating pins 604 and the two positioning pins 605 are raised, and as described above, the upper ends of the two positioning pins 605 enter the positioning holes 502 of the measuring table 5 and their planar positions are changed. Regulated. At the same time, the upper end surfaces of the four position regulating pins 604 are brought into contact with the lower surface of the measuring table 5 to lift it, so that the lower surface of the measuring table 5 is supported by these position regulating pins 604, so that the measuring table 5 is stable and stable. Holds in a solid state. In this state, the transfer robot 801 transfers the laser scan motor 4 onto the measuring table and places it on the measuring table 5. This state is shown in FIG.
As shown in the plan view and front view of (a) and (b), the transfer robot 801 positions the laser scan motor 4 with high accuracy.
The portion of the motor base 401 protruding downward is fitted into the concave portion 503 of the measuring table 5, and the annular permanent magnet 504 magnetically attaches the spring pressing plate 409 provided on the rotor 405. The measuring table 5 is mounted on the rotary table 2 and its state is shown in the plan view of FIG.

(Second Station: Measuring Unit) In the dynamic balance measuring unit ST2, as shown in the front view and the side view in FIGS. 17 (a) and 17 (b), two energizing mechanisms are provided in the upper region of the rotary table 2. 9 is provided. The first energizing mechanism is operated to project downward from an air cylinder 901 which is supported by the upper frame 101 constructed on the base frame 1 in a region on the rotary table 2 and is directed downward, and a lower end of the air cylinder 901. The contact point structure 903 is fixed to the tip of the piston rod 902. In this contact structure 903, four fixed contact pins 904 and two expansion contact pins 905 are projected and supported on an insulating support 906 so as to project downward, and these are electrically connected to the control circuit 14. ing. Then, these fixed contact pins 904
The expansion contact pin 905 and the expansion contact pin 905 are provided on the contact plate 207 provided on the rotary table 2 when the support 906 is moved downward by the operation of the air cylinder 901.
Sensor contacts 208 and two accelerometer contacts 209
And are electrically connected to each other.

The expansion / contraction contact pin 905 is shown in FIG.
As shown in FIG. 7, an inner contactor 908 and an outer contactor 909 having a concentric structure that are insulated and supported by a pair of cylindrical insulating cylinders 907.
The inner contactor 908 is installed inside the insulating cylinder 907 so as to be movable in the axial direction, and is urged in the protruding direction by a small-diameter coil spring 910 that is also mounted inside the insulating cylinder 907. Further, the outer contact 909 is formed integrally with the insulating cylinder 907, a mounting sleeve 911 is fitted and inserted on the outer peripheral surface of the outer contact 909, and a stopper 912 provided on the outer contact 909 prevents the outer contact 909 from falling off. Large-diameter coil spring 9 fitted around the outer periphery of the contactor 909
By means of 13, the shaft can be moved relative to the outer contactor 909. Therefore, if the mounting sleeve 911 is fixedly supported by the support body 906, the outer contactor 909 is urged by the elastic force of the large-diameter coil spring 913 to the support body 906 so as to project in the distal direction. The inner contact 908 is biased toward the outer contact 913 by the small-diameter coil spring 910 in the protruding direction,
Due to these biasing forces, the outer contactor 909 and the inner contactor 90
8 will be electrically connected to the accelerometer contacts 209 of the contact plate 207 at the same time.

Further, the contact plate 207 is as described above, but as shown in the sectional structure of FIG. 19, a sensor contact 208 having four surface contact contact structures on an insulating substrate 214.
And an accelerometer contact 209 having two cylindrical contact contact structures. The peripheral portion of the insulating substrate 214 is reinforced by a frame-shaped spacer 215, and is fixed to a part of the surface of the rotary table 2 with screws or the like. Here, in the accelerometer contact 209, an inner contact 217 and an outer contact 218 are coaxially provided with an insulating cylinder 216 interposed therebetween, and the inner contactor 908 and the outer contactor 909 of the expansion / contraction contact pin 905 are provided.
Are contacted and electrically connected. The sensor contact 208 is electrically connected to the photosensor 510 of the measuring table 5 by the flexible cord 219, and the accelerometer contact 209 is also connected to the two accelerometers 507 and 508 of the measuring table 5 by the flexible coaxial cord 220. Each is electrically connected.

As shown in the front view and the side view in FIGS. 20 (a) and 20 (b), another air cylinder 914 is provided in parallel with the air cylinder 901 as a second current carrying mechanism of the current carrying mechanism 9. A chuck 916 having a pair of jaws 917 that is supported by the upper frame 101 and is directed downward is provided at the lower end of the piston rod 915. The jaws 917 are opened and closed based on an electric signal.
A contact pin mount 918 is sandwiched between the sixteen.
This contact pin mount 918 is shown in FIG.
As shown in the front view and the side view of (b), the permanent magnet 91 is attached to the lower surface.
It has an inverted L-shaped insulator 920 having 9 and a plurality of contact pins 921 protruding downward and supported by this insulator 920. Further, fitting holes 922 into which the small pins 514 standing on both sides of the lock piece 511 of the measuring stand 5 are fitted are formed on both sides of the lower surface of the insulator 920. The contact pin 921 is electrically connected at its upper end to a drive circuit (not shown) for rotationally driving the laser scan motor 4 by a cord (not shown). And this contact pin mount 9
18, when the piston rod 915 is lowered, the permanent magnet 919 on the lower surface thereof is magnetically attracted to the lock piece 511 of the measuring table 5, and the two fitting holes 922 are fitted to the small pins 514, respectively. Thus, the measurement table 5 is fixedly erected. Then, as shown in FIGS. 22 (a) and 22 (b), when the chuck 916 is opened and the piston rod 915 is raised, the plan views shown in FIGS. 23 (a), (b) and (c) are obtained.
As shown in the front view and the left side view, the insulator 920 is held on the upper surface of the measuring table 5 in a standing state, and in this standing state, each contact pin 921 is connected to the circuit board of the laser scan motor 4. The contacts 413 provided at 402 are respectively brought into contact with each other to be electrically connected to each other.

Further, in the measuring section ST2, as shown in FIG. 4, an air brake 10 is arranged on the base frame 1 facing the rotary table 2. The air brake 10 is a polygon mirror 40 of the laser scan motor 4.
6 has a nozzle 1001 whose tip is directed to a position decentered in the rotation direction of the polygon mirror with respect to the side surface of the polygon mirror, and the compressed air is discharged from the nozzle 1001 to discharge the polygon mirror. It is configured to spray on the side of 406. This air brake 10
After measuring the dynamic balance of the laser scan motor 4, brake the rotation of the polygon mirror 406 that is rotated by inertia even after stopping the power supply to the motor unit,
It is possible to stop the rotation of the polygon mirror 406 and the rotor 405 in a short time.

As shown in the flowchart in FIG. 24, the operation of the measuring section ST2 is such that when the measuring table 5 equipped with the laser scan motor 4 is rotated to the second station position together with the rotary table 2, the lifting mechanism 6 is moved. As in the case of the loader section ST1, the measuring table 5 is moved to the measuring table support 2
It is lifted above 03 for stable support. Then, the first
The air cylinder 901 of the energizing mechanism is moved down, the lowered contact structure 903 is brought into contact with the contact plate 207 of the rotary table 2, and the sensor contact 208 and the accelerometer contact 209.
The fixed and retractable contact pins 904 and 905 are respectively brought into contact with the photo sensor 510 of the measuring stand 5 and the accelerometer 50.
7, 508 are electrically connected to the external control circuit 14, respectively. At the same time, the air cylinder 914 of the second energizing mechanism is
Is moved down, and the contact pin mounting base 918 is magnetically attached to the lock piece 511 of the measuring base 5. Air cylinder 914
The chuck 916 that opens and closes the jaw 917 is opened to raise the air cylinder 914. Contact pin mount 9
The contact pin 921 provided on 18 is brought into contact with the contact 413 of the laser scan motor 4, and the coil 410 forming the motor section is electrically connected to the control circuit 14. Then, when the elevating device 6 descends, the measuring table 5 is supported only by the measuring table support 203 of the rotary table 2 together with the laser scan motor 4, so that the measuring table 5 is relatively free to move horizontally and vertically on the rotary table 2. It is supported in a so-called floating state, which is movable.

Next, when a drive current is supplied to the laser scan motor 4 from the contact pin 921, the motor part of the laser scan motor 4 starts rotating, and the polygon mirror 406 and the rotor 405 are rotated. Then, rotation is performed at a required rotation speed for a predetermined time, and vertical and horizontal accelerations that occur in the laser scan motor 4 at that time occur in the measurement table 5 that integrally supports the laser scan motor 4, as they are. This is measured by accelerometers 507 and 508 provided on the measuring table 5. The measured outputs of these accelerometers are the two accelerometer contacts 20 of the contact plate 207.
9 outputs to the external control circuit. The rotational speed of the polygon mirror 406 at that time is such that the reflective photosensor 510 optically detects a mark 412 provided on a part of the peripheral surface of the rotor 405, and the detection outputs are detected by the four contact plates 207. It is performed by outputting to the external control circuit 14 through the sensor contact 208 of (1) and counting the number of detections of the mark 412 in the control circuit 14. And
The computer in the control circuit 14 measures the unbalanced state of the dynamic balance in the laser scan motor 4 from the vertical and horizontal accelerations and the rotational speed at that time, and further, in order to correct this unbalance, the polygon mirror 40 is used.
6 and at which position of the rotor 405 the weight of the resin should be dropped as a balance adjusting weight.

After that, the elevating mechanism 6 is raised again, and the measuring table 5 is held stably again. And the air brake 10
Thus, the compressed air is blown onto the peripheral surface of the polygon mirror 406, and the rotation of the polygon mirror 406 is stopped in a short time. Then, the air cylinder 901 is raised to lift the contact structure 903 upward, and the contact structure 903 is removed from the contact plate 207. At the same time, the air cylinder 914 descends and the chuck 91
6 is closed, the contact pin mounting base 918 is sandwiched, and the air cylinder 914 is raised to contact the contact pin mounting base 91.
8 is lifted upward and removed from the contact 413.
At this time, the air cylinder 701 of the lock drive mechanism 7 is operated from the state of FIG. 25, the plunger 702 is raised, and the lever 212 of the lock mechanism 210 is rotated counterclockwise in the drawing against the force of the spring 213 to lock. The pin 211 is fitted into the lock hole 512 of the measuring table 5. As a result, the permanent magnet 919 of the contact pin mounting base 918 prevents the contact pin mounting base 918 and the measuring base 5 from being integrally lifted upward. After that, the lock drive mechanism 7 is returned to the state of FIG. 25, and the elevating mechanism 6 is lowered, so that the measuring table 5 is supported by the measuring table support 203, and is returned to the state before measurement.

(Third Station: First Adjusting Section) The first adjusting section ST3 is provided with a dispenser 11 for adjusting the balance by dropping resin onto the laser scan motor.
Is provided. Referring to the schematic view shown in FIG. 5 and the front view of FIG. 26, this dispenser 11 has a first ball screw mechanism 1101 supported obliquely downward on the upper frame 101, and is attached to a rotation shaft of a motor 1102. When the connected first ball screw 1103 is axially rotated, the first nut 1104 screwed to the first ball screw 1103 is moved in the axial direction, and the cylinder support plate 1105 integral with the first nut 1104 is moved. Be moved. The cylinder support plate 1105 has a resin cylinder 1
106 and the second ball screw mechanism 1107 are mounted, and the second ball screw 1109 connected to the rotation shaft of the motor 1108 is rotated, so that the second nut 1110 screwed to the second ball screw 1109. Is moved in the axial direction, the resin piston 1111 integrated with the second nut 1110 is moved, the ultraviolet curable resin in the resin cylinder 1106 is discharged from the nozzle, and the resin is mounted on the measuring table 5 on the rotary table 2. It is dropped on the upper surface of the polygon mirror 406 of the laser scan motor 4.

On the other hand, at a position above the laser scan motor 4 of the upper frame 101, a positioning motor mechanism 12 whose detailed structure is shown in FIGS. 27 and 28 is arranged. This positioning motor mechanism 12 includes an air cylinder 1
A motor supporting portion 1203 is configured to be able to move up and down by an elevating portion 1202 composed of 201. The stepping motor 1 having a rotation shaft directed downward in the motor supporting portion 1203.
204 is supported. A drive side pulley 1205 is attached to a rotation shaft of the step motor 1204, and a timing belt 1206 is wound around the drive side pulley 1205. On the other hand, the timing belt 1206 is also wound around the driven pulley 1208 attached to the upper end of the rotary shaft 1207 of the rotary unit arranged immediately above the rotary shaft 403 of the polygon mirror 406 of the laser scan motor 4. The rotation shaft 1207 is intermittently driven to rotate by the rotation of the step motor 1204. This rotating shaft 12
The bearing 07 is axially supported by the bearing 1209 in the vertical direction on the elevating portion 1202. A stopper 1210 is fixed to the lower end of the bearing 072 and a cylindrical abutting portion 1211 which is movable in the axial direction is fitted to the stopper 072. Stopper 1210
1212 inserted between the contact part 1211 and the contact part 1211
Urges the contact portion 1211 downward. An annular elastic body 1213 is fixed to the abutting portion 1211, and the polygon mirror 40 of the laser scan motor 4 is attached.
The upper surface of 6 is elastically contacted from above.

Further, an arm 1214 is projected downward from the motor supporting portion 1203, and the sensor contact insulating base 12 is provided at the lower end of the arm 1214.
15 is supported by this sensor contact insulating base 1
Four sensor contact pins 1216 are projected downward on 215. This sensor contact pin 1
216 has the same arrangement as the four fixed contact pins 904 of the energization mechanism 9 provided in the measuring section ST2, and when lowered, the sensor contacts of the contact plate 207 provided on the rotary table 2 It is possible to contact 208.

In the first adjusting section ST3, as shown in FIG.
As shown in the flowchart in FIG. 4, when the laser scan motor 4 whose dynamic balance is measured in the measuring unit ST2 is moved along with the rotation of the rotary table 2, the elevating mechanism 6 ascends as in the case of each of the above units, The measuring table 5 is held in a stable state. Then, the air cylinder 1201 of the positioning motor mechanism 12 is operated and the motor support portion 1203 is lowered. As a result, the annular elastic body 1213 of the abutting portion 1211 fitted to the lower end of the rotating shaft 1207 is elastically contacted with the upper surface of the polygon mirror 406, and the urging force of the spring 1212 further abuts the annular elastic body 1213. The rotary shaft 1207 and the polygon mirror 406 are integrated in the rotational direction by frictional coupling with the surface 1211. Also,
At the same time, the sensor contact pin 1216 of the sensor contact insulating base 1215 is electrically connected to the sensor contact 208 of the contact plate 207, and the photosensor 510 of the measuring base 5 is connected.
Is electrically connected to

Then, in this state, the pulse signal from the control circuit is supplied to the step motor 1204, and when the step motor 1204 is rotationally driven, the drive pulley 120
5, timing belt 1206, driven pulley 1208
The rotational force is transmitted to the rotary shaft 1207 via the, and the polygon mirror 406 is forcibly driven to rotate in small angle units. Also, this polygon mirror 406
The rotation position of the polygon mirror 406 is detected by detecting the mark 412 provided on the peripheral surface of the rotor 405 by the photo sensor 510 in accordance with the rotation of. As a result, the control circuit performs control to set a part of the circumference of the polygon mirror 406 calculated based on the measurement result of the measuring unit ST2 to a predetermined position, that is, a position facing the dispenser 11, and by this control. Polygon mirror 40
6 is fixed in its rotational position.

When the rotation position of the polygon mirror 406 is set in this way, the motor 110 of the dispenser 11 is set.
2 is rotationally driven, and the cylinder support plate 1105 is moved by the first ball screw 1103 that is axially rotated integrally with this, so that the nozzle of the resin cylinder 1106 is positioned to face the upper surface of the polygon mirror 406. And the motor 11
By rotating the second ball screw 1109 by the rotation of 08, the resin piston 1111 is moved, and the resin in the resin cylinder 1106 is discharged from the nozzle and dropped on the upper surface of the polygon mirror 406. As a result, resin as a weight for balancing is attached to a part of the circumference of the upper surface of the polygon mirror 406.

(Fourth Station: First Fixing Section) The first fixing section ST4 is provided with an ultraviolet ray irradiating section 13 as shown in the schematic structure of FIG. The lamp 1301 and this ultraviolet lamp 130
1 has an optical fiber 1302 whose one end is optically connected. The other end of this optical fiber 1302 is fixed to the upper frame 101 above the measuring table 5, and its optical axis is on the upper surface of the polygon mirror 406. It is configured to face each other. A lens optical system is provided at the other end of the optical fiber 1302 as needed, and a light blocking mechanism 1303 including a light blocking plate 1304 facing the other end of the optical fiber 1302.
Is provided. Then, when the ultraviolet lamp 1301 is turned on, the emitted ultraviolet rays are transmitted from one end of the optical fiber 1302 to the other end, emitted from this other end, and irradiated onto the upper surface of the polygon mirror 406. It has become.

In the first fixing section ST4, as shown in the flowchart of FIG. 30, when the laser scan motor 4 to which the resin has been dropped in the first adjusting section ST3 is moved along with the rotation of the rotary table 2. The elevating mechanism 6 rises and holds the measuring table 5 in a stable state. Then, in synchronization with this, the ultraviolet lamp 1301 is turned on, the light blocking mechanism 1303 is lowered, and the light blocking plate 1304 is retracted from the other end position of the optical fiber 1302, so that the other end of the optical fiber 1302 is opened. The resin is irradiated with the ultraviolet rays emitted from the other end of the optical fiber 1302. This allows
The resin is hardened and fixed as a counterweight of the polygon mirror 406. After that, the light shielding mechanism 1303 moves up to prevent the ultraviolet rays from the optical fiber 1302 from being irradiated to other areas, and turns off the ultraviolet lamp 1301. If the light blocking mechanism 1303 is provided, the ultraviolet lamp 1301 may be constantly turned on. In addition, the ultraviolet lamp 1 does not have a light-shielding mechanism.
The light 301 may be turned on and off at the irradiation timing.

(Fifth Station: Second Adjusting Section) The second adjusting section ST5 has almost the same structure as the first adjusting section ST3, and therefore detailed description thereof will be omitted. However, in the second adjusting unit ST5, the resin cylinder 1106 is arranged so that the nozzle of the dispenser 11 is positioned to face the laser scan motor 4.
When you lower the
6 is arranged to face the upper surface of the lower rotor 405. Then, when the ultraviolet curable resin is dropped from the nozzle to correct the balance, the resin is attached to a part of the circumference of the upper surface of the rotor 405. Thereby, the first
In the adjusting part ST3, it is possible to balance the resin attached to the upper surface of the polygon mirror 406 in the opposite direction.

(Sixth Station: Second Fixing Section) The second fixing section ST6 is the same as the first fixing section ST4, except that here, the ultraviolet curing applied to the upper surface of the rotor 405 in the second adjusting section ST5. The resin is irradiated with ultraviolet rays to be cured and fixed.

The first adjusting unit ST3 described above uses the polygon mirror 406 based on the measurement result of the measuring unit ST2.
It is only operated if it is required to attach a weight to the upper surface of the. Similarly, the second adjusting unit ST5 is operated only when it is required to attach a weight to the upper surface of the rotor 405 based on the measurement result of the measuring unit ST2. Further, the processes of the first adjusting unit ST3 and the first fixing unit ST4, or the processes of the second adjusting unit ST5 and the second fixing unit ST6 are performed as a set, respectively. When the process in ST3 is performed, the first fixing unit ST
When the process of No. 4 is performed and the process of the second adjusting unit ST5 is performed in the same manner, the process of the second fixing unit ST6 is performed.

(Seventh station: Confirmation unit) Confirmation unit ST
Reference numeral 7 has the same configuration as the measuring unit ST2, and detailed description thereof will be omitted. In the confirmation unit ST7, as shown in the flowchart in FIG. 31, the laser scan motor 4 in which the balance adjustment is performed in the first adjustment unit ST3, the first fixing unit ST4, the second adjustment unit ST5, and the second fixing unit ST6. The photo sensor 5 mounted on the measuring table 5 is driven to rotate.
The rotation speed is measured by 10, and the accelerometer 507,
The balance is measured by measuring the acceleration by 508. Then, the control circuit 14 determines whether or not the balance of the laser scan motor 4 is within a predetermined allowable range based on the result of this measurement. Based on this determination result, the operation in the unloader section ST8 described below is controlled.

(Eighth Station: Unloader Section) In the unloader section ST8, as shown in the flowchart of FIG. 32, when the balance of the laser scan motor 4 is within the allowable range based on the determination result of the confirmation section ST7. In this case, the laser scanning motor 4 is lifted from the measuring table 5 by the transfer robot 801, transferred to the shuttle 803 of the transfer unit 8 and carried out. When lifting the laser scan motor 4 from the measuring table 5, the elevating mechanism 6 is lifted to stably support the measuring table 5, and then the lock driving mechanism 7 is operated by the air cylinder 701 to lock the measuring table 5. 21
A fixed state is set by 0. Then, the transfer robot 801
Holds the laser scan motor 4 and pulls it up. As a result, the laser scan motor 4 is
The magnetic force of the annular permanent magnet 504 in the concave portion 503 of the measuring table 5 is overcome to be lifted above the measuring table 5 and transfer to the transport unit 8 is possible.

On the other hand, if the balance of the laser scan motor 4 is out of the allowable range as a result of the determination in the confirmation section ST7, the balance adjustment is performed again. In this case, the lifting operation of the laser scan motor 4 by the transfer robot 801 is not performed in the unloader unit ST8, and the laser scan motor 4 does not move to the measuring table 5 and the rotary table 2.
It remains mounted on the. Therefore, in this state, the rotary table 2 is rotated to move to the loader unit ST1 again, and further to the measuring unit ST2, and the series of balance adjustment processing described above is performed again. At this time, it goes without saying that a new laser scan motor from the carrying section 8 is not transferred to the loader section ST1.

Through the above steps, the dynamic balance of the laser scan motor is automatically measured and the balance is adjusted. Therefore, although illustration and description thereof are omitted, a magazine accommodating a laser scan motor for the adjusting device of the present invention, and a mechanism for mounting or dismounting the laser scan motor in the magazine on the shuttle of the transport unit. By attaching a laser scan motor to the transport section from the magazine and storing the adjusted laser scan motor in the magazine, it is possible to fully automate the dynamic balance of the laser scan motor. It becomes possible to do. As a result, no manual adjustment is required, and quick and high-quality adjustment of dynamic balance can be realized.

Further, by supporting the laser scan motor by the magnetic force of the permanent magnet provided on the measuring table, the laser scan motor can be supported without providing a complicated mechanism, and the weight of the measuring table can be reduced. The dynamic balance of the laser scan motor can be measured while the influence of the weight of the measuring table is small, and the measurement accuracy can be improved. In addition, in this case, since the laser scan motor is held in a state that a part of the laser scan motor is inserted into the concave portion provided on the measurement table, the laser scan motor is automatically positioned with respect to the measurement table, and all the laser scan motors are Can be measured and confirmed under the same conditions, and the adjustment yield can be increased. Further, when the laser scan motor is mounted on the measuring table, the measuring table is held in a fixed state by the lock mechanism, so that the laser scanning motor can be reliably mounted against the attraction force of the permanent magnet.

At the time of measuring and confirming the dynamic balance, the laser scan motor is integrally mounted on the measuring table, and the measuring table is floated on the rotary table as the substrate by the elastic support. Since it is supported, it is possible to measure the vibration generated at the time of its rotational operation due to the imbalance in the laser scan motor as the vibration of the measuring table by the accelerometer, while at the same time blocking the external vibration by the elastic support. Therefore, it is not affected by external vibration when measuring the dynamic balance. In particular, since the measuring table is provided with an accelerometer for detecting vibrations and a photosensor for detecting the number of revolutions, it is sufficient to simply make an electrical connection to the measuring table at each station. It is possible to simplify and speed up the automation work in, and as a result, it is possible to speed up the measurement and confirmation work.

Further, at the time of this electrical connection, the contact pin provided on the contact mechanism is brought into contact with the contact plate provided on the rotary table, so that the electric circuit section on the apparatus fixed section side and the apparatus movable section. The side rotary tables or measuring tables can be electrically connected to one another. As a result, the electrical connection between the electrical circuit section and the accelerometer, the sensor, etc. can be easily performed, and a quick electrical connection operation can be performed even when the rotary table is rotationally moved. Further, a conducting mechanism such as a conductor rail or a sliding contact is not required, so that the space for the device can be reduced, and maintenance for wear or the like is not required.

Further, similarly, the contact of the laser scan motor can be brought into contact with a contact pin magnetically attached to the measuring table by magnetic force to make electrical connection. In this case, the contact pin mounting base is magnetically attached to the measuring base integrally, and is electrically connected to the electric circuit section via a flexible cord, so the contact pin mounting base is attached to the measuring base. Even if it does, external vibration is not transmitted to the measuring table through the contact pin mechanism, and is not affected by external vibration when measuring and checking the dynamic balance described above.

Further, at the time of adjusting the dynamic balance, the resin can be dripped onto the polygon mirror of the laser scan motor or the arbitrary rotational position of the rotor by the dispenser, and the dynamic balance can be adjusted appropriately. Become. The resin that has been deposited on the surface is made as a weight for balancing balance by irradiating it with ultraviolet light and curing it, so that it is possible to produce a minute weight with high precision and adjust the dynamic balance.
Highly accurate dynamic balance adjustment is possible. At this time, since the polygon mirror and the rotor are rotated by the positioning motor mechanism and the rotational position thereof is detected by the photosensor at the same time, high-precision positioning can be performed and high precision adjustment can be promoted.

Furthermore, when the laser scan motor is attached to or detached from the measuring table, such as when loading or unloading,
When making electrical connection to the measuring table for measurement, adjustment, confirmation, etc., the measuring table is fixed in a floating state by an elevating mechanism and fixed at a predetermined position by an elevating mechanism. Since it is held in the position of, it becomes possible to perform these work stably and surely,
Work efficiency can be improved.

In the above embodiment, an example of the laser scan motor is shown as the object of dynamic balance, but the dynamic balance adjusting apparatus of the present invention incorporates a motor used as a drive source for other purposes. The dynamic balance of various units can be similarly adjusted.

[0062]

As described above, according to the present invention, the energizing mechanism for electrically connecting the device fixed portion side and the object to be adjusted on the rotary table in order to measure or confirm the dynamic balance of the object to be adjusted. As the configuration is adopted so that it can be attached to and detached from the rotary table side, during measurement and confirmation, electrical connection should be performed with the energizing mechanism integrated with the rotary table side to measure and confirm dynamic balance. You can This eliminates the need for a current-carrying mechanism such as a conductor rail or a sliding contact, which simplifies the configuration of the adjusting device, and enables downsizing of the device and simplification of maintenance.

On the rotary table, there is provided a measuring table on which the object to be adjusted can be mounted while being held integrally, and the measuring table is supported on the rotating table by an elastic support, and the object to be adjusted is supplied with electric power. Is supplied and driven, and the acceleration generated on the measuring table at that time is measured by an accelerometer to measure and confirm the dynamic balance, and the contact pin mechanism electrically connected to the object to be adjusted is set on the measuring table. Since the device is mounted integrally to supply electric power, the measurement of acceleration on the measuring table is not affected by the mounting of the contact pin mechanism even in the energized state, and highly accurate measurement and confirmation can be performed.

In this case, since the energizing mechanism mounts the contact pin mechanism on the measuring table by magnetic force and releases it from the cylinder mechanism after mounting, the measuring table can be substantially separated from the apparatus fixing portion. It is possible to measure and check the dynamic balance with higher accuracy. In addition, this contact pin mechanism adopts a structure that reciprocates with respect to the measuring table by a reciprocating mechanism and attaches and detaches it, so that it is moved to the rotary table side only when necessary and mounted on the measuring table. At other times, since the rotary table is retracted from the rotary table, it does not hinder the rotation of the rotary table and other operations.

Further, when the contact pin mechanism is mounted on the measuring table, if the contact pin mechanism is simply placed on the measuring table, it can be mounted half automatically automatically by the magnetic force. When detaching the contact pin mechanism, it is sufficient to simply pull up the contact pin mechanism against the magnetic force, and the attaching / detaching operation can be simplified. In particular, at the time of disengagement, since the measuring table is locked by the lock mechanism, the measuring table is not lifted up and the measuring table and the rotary table are not damaged.

[Brief description of drawings]

FIG. 1 is a front view of the overall configuration of a dynamic balance adjusting device of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a rear view of FIG. 1;

FIG. 4 is a plan view of FIG. 1;

FIG. 5 is a schematic diagram for explaining the function of the device of the present invention.

FIG. 6 is a flowchart for explaining a schematic operation of the device of the present invention.

FIG. 7 is a plan view and a sectional view of a laser scan motor.

FIG. 8 is a plan view of the entire structure of a rotary table.

FIG. 9 is an enlarged plan view of a unit table constituting a rotary table.

FIG. 10 is a plan view, a front view, and a right side view of a measuring table.

FIG. 11 is a front view showing a lowered state of the lifting mechanism.

FIG. 12 is a front view showing a lifted state of a lifting mechanism.

FIG. 13 is a front view showing the relationship between the lock mechanism and the rotary table.

FIG. 14 is a flowchart showing the operation of the loader unit.

15A and 15B are a plan view and a front view showing a state in which a laser scan motor is mounted on a measuring table.

FIG. 16 is a plan view showing a state in which a measuring table is mounted on a rotary table.

FIG. 17 is a front view and a side view of the first energization mechanism.

FIG. 18 is a cross-sectional view of a telescopic contact pin.

FIG. 19 is a sectional view of a contact plate.

FIG. 20 is a front view and a side view of a second energizing mechanism.

FIG. 21 is a front view and a side view of a contact pin mount.

FIG. 22 is a front view and a side view for explaining the operation of the second energizing mechanism.

FIG. 23 is a plan view of the mounting state of the contact pin mounting base,
It is a front view and a side view.

FIG. 24 is a flowchart showing the operation of the measuring unit.

FIG. 25 is an enlarged view showing the operation of the lock mechanism.

FIG. 26 is a front view of a first adjusting unit including a dispenser.

FIG. 27 is a front view of the adjusting motor mechanism.

FIG. 28 is a side view of the adjusting motor mechanism.

FIG. 29 is a flowchart showing the operation of the first adjusting unit.

FIG. 30 is a flowchart showing the operation of the first fixing unit.

FIG. 31 is a flowchart showing the operation of the confirmation unit.

FIG. 32 is a flowchart showing the operation of the unloader unit.

[Explanation of symbols]

 1 base frame 2 rotary table 3 rotary drive mechanism 4 laser scan motor 5 measuring table 6 lifting mechanism 7 lock drive mechanism 8 transport unit 9 energizing mechanism 10 air brake 11, 11A dispenser 12 positioning motor mechanism 13 ultraviolet irradiation unit 14 control circuit 15 display Light 412 Contact 512 Lock hole 513 Magnetized part 914 Air cylinder 918 Contact pin mount 919 Permanent magnet 920 Insulator 921 Contact pin

Claims (12)

[Claims] 1. A rotary table which is capable of being rotationally driven by mounting an adjusted body for adjusting a dynamic balance, and the adjusted body to be arranged on the rotary table at different rotational positions of the rotary table. And a plurality of stations for carrying out measurement of dynamic balance with respect to the object to be adjusted, adjustment of dynamic balance, confirmation of dynamic balance, and unloading of the object to be adjusted from the rotary table. In the dynamic balance adjusting device for adjusting the dynamic balance while sequentially moving the adjusting body with respect to each station by rotating the rotary table, a station for measuring and confirming the dynamic balance of the adjusted body includes the rotary table. Energization for making electrical connection between the electric circuit part that is removable from the electric circuit part provided in the device fixing part and the adjusted body when attached. A dynamic balance adjusting device comprising a mechanism. 2. A measuring table for supporting an object to be adjusted is supported on the rotary table by an elastic supporting member, and the energizing mechanism is configured to be attachable to and detachable from the measuring table.
The dynamic balance adjusting device according to claim 1, further comprising a contact pin mechanism that is electrically connected to a contact provided on the body to be adjusted in a mounted state. 3. A measuring table is provided with a magnetic body in a position close to the contact of the body to be adjusted, and a contact pin mechanism is provided with a mounting base for supporting the contact pin. The dynamic balance adjusting device according to claim 2, wherein a magnet to be magnetically attached is integrally provided. 4. The contact pin mounting base has an inverted L side surface shape.
A permanent magnet is integrally formed on the lower end portion of the V-shaped insulator, and one or more contact pins electrically connected to the electric circuit portion by a flexible cord is provided on the upper end portion of the tip end portion thereof. 4. The movement according to claim 3, wherein the tip of the contact pin is brought into contact with a contact of an object to be adjusted on the measuring table in a state where the permanent magnet is magnetically attached to the measuring table. Balance adjustment device. 5. The energizing mechanism is provided with a reciprocating mechanism capable of moving up and down provided in a device fixing portion, and the contact pin mount is gripped by a chuck provided in the reciprocating mechanism and lowered. The dynamic balance adjusting apparatus according to claim 4, wherein the measuring table is sometimes magnetically attached to the measuring table, and at the same time, the gripping state by the reciprocating mechanism is released. 6. The contact pin mechanism is moved toward the rotary table by the reciprocating mechanism when the object to be adjusted is rotated to each measurement and confirmation station position as the rotary table rotates, and the contact pin mechanism moves toward the rotary table. The dynamic balance adjusting device according to claim 5, wherein the measuring table is magnetically attached at the moving position to make an electrical contact with the contact. 7. The contact pin mechanism supplies electric power to the body to be adjusted when it is electrically connected to the contact to drive the body to be adjusted, and enables measurement and confirmation of the dynamic balance thereof. Either dynamic balance adjustment device. 8. The object to be adjusted is a laser scan motor in which a polygon mirror and a motor unit for rotationally driving the polygon mirror are integrally formed, and dynamic balance when the motor unit is rotationally driven is measured. Any of claims 1 to 7, which is configured as a device for attaching a weight for balancing and fixing the weight, detects the acceleration generated by the rotational drive of the motor section, measures the dynamic balance, and confirms the dynamic balance. Dynamic balance adjusting device. 9. An accelerometer for detecting an acceleration generated on the measuring table when measuring the dynamic balance of the object to be adjusted, and a sensor for detecting a rotational position of the object to be adjusted, as measuring means on the measuring table. The dynamic balance adjusting device according to claim 8, wherein the dynamic balance adjusting device is provided. 10. An elevating mechanism for lifting the measurement table above a position supported by the elastic support and fixedly supporting the position at the position, and an object to be adjusted against a magnetic force of a magnet. The dynamic balance adjusting device according to claim 9, further comprising a lock mechanism for fixing the measuring table when the measuring table is detached from the measuring table. 11. The lock mechanism includes a lock hole formed on a side surface of the measuring table and a lock pin structure provided on a rotary table and fitted into the lock hole to prevent the measuring table from moving in the vertical direction. The lock hole is opened in a part of a magnetic body fixed to the measuring table, and the contact pin mounting base of the contact pin mechanism is magnetically attached to the magnetic body.
Zero dynamic balance adjustment device. 12. Eight stations are formed around the rotary table, a first station is a loader section for mounting the adjusted object on the rotary table, and a second station is a measuring section for measuring the dynamic balance of the adjusted object. The third station is a first correction unit that adjusts the balance by attaching a weight to a part of the body to be adjusted based on the measured dynamic balance, and the fourth station is a first fixing unit that fixes the attached weight. , Fifth
The second station is a second correction section that adjusts the balance by attaching a weight to another part of the body to be adjusted based on the measured dynamic balance, and the sixth station is a second fixing section that fixes the attached weight. The seventh station is a confirmation unit for confirming the dynamic balance of the adjusted body whose adjustment process has been completed, and the eighth station is an unloader unit for loading the adjusted body whose dynamic balance adjustment has been completed from the rotary table, The dynamic balance adjusting device according to claim 1, wherein the energizing mechanism is provided in each of the measuring unit and the checking unit.