JPH06318340A - Carrying device and assembling and processing device - Google Patents

Abstract

PURPOSE:To shorten a tact time. CONSTITUTION:A plate 23 fitted with an LSI card 21 being a storage means storing position adjusting data being position information relating to an optical pickup device 10, i.e., laser beam position information together with the optical pickup device 10 is placed on a belt conveyor 24 and carried. Skew adjustment of an objective lens of the optical pickup device 10 is performed by a skew adjusting device 30 by fetching the platen 23 carried by the carrier device 20 and using the position adjusting data stored in the LSI card 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier device for carrying a device between a plurality of steps and an assembly processing device for assembling and processing a device carried by the carrier device.

[0002]

2. Description of the Related Art Assembling and processing including adjustment of devices such as compact disc (CD) players and other precision equipment rarely ends in one step. For example, when the device is an optical pickup device, adjustment of an objective lens used in the optical pickup device is generally performed by a biaxial direction (XY direction) position adjustment process and a tilt adjustment so-called skew (SKEW) adjustment process. Has been done. Here, the optical pickup device is a recording and / or reproducing device that records and / or reproduces an information signal using a disc such as an optical disc or a magneto-optical disc as a recording medium, and writes and / or writes the information signal to the disc. It is for reading.

In the biaxial position adjusting step of the objective lens, a laser beam emitted from, for example, a semiconductor laser which is a light source of the optical pickup device itself is recognized by a biaxial position adjusting camera, and the position of the laser beam is detected. Let (the spot position formed by the beam) be the laser beam position (the spot position formed by the beam) when the laser of the reference optical pickup device that is the master device is turned on,
This is an adjusting step of automatically moving the objective lens in the XY directions so as to match.

The SKEW adjustment process for the objective lens is the same as the step 2 above.
This is performed by taking in the optical pickup device that has already been adjusted in the X and Y directions in the axial position adjustment process. In this step, the beam emitted from the semiconductor laser is recognized by using a beam search camera, and the contrast ring light and shade generated around the beam is image-processed by a high-magnification SKEW adjustment camera. This is an adjusting step of correcting the tilt of the objective lens by rotating the lens tilt adjusting screw so as to be uniform.

[0005]

By the way, a step of adjusting the position of the objective lens in the biaxial directions and the SKEW of the objective lens are described.
In the adjustment process, the magnification (resolution) of the camera used is different. The cameras used for the SKEW adjustment process (beam search and SKEW adjustment cameras) require considerably higher magnification than the two-axis direction adjustment position adjustment cameras used in the two-axis direction position adjustment process. To be done. However, a high magnification camera has a narrow field of view. In this situation, if the SKEW adjustment process, which is a post-process, is performed, in the beam search camera used in the SKEW adjustment process, the biaxial adjustment position used in the biaxial adjustment process is used. Since the field of view is narrower than that of the adjustment camera, a situation occurs where the beam is lost. Then, it is necessary to perform many operations to search for the beam outside the field of view,
The procedure (tact) of the above SKEW adjustment process requires time.

This becomes more serious as the adjustment variation occurs in the biaxial position adjusting step which is the previous step.

The present invention has been made in view of the above circumstances, and a storage device for storing information about a device adjusted in the previous step and a transport device for transporting the device together, and a transport device for transporting the device. It is an object of the present invention to provide an assembling / processing apparatus capable of shortening the takt time of the subsequent process based on the information of the previous process stored in the storage means.

[0008]

According to another aspect of the present invention, there is provided a transporting apparatus for transporting a device between a plurality of steps, the storage means storing the information about the device obtained in the previous step together with the device. The above problem is solved by transporting the process.

Here, the device may be an optical pickup device having a laser light source, and the information regarding the device may be a laser beam position emitted from the laser light source to the device through an optical system.

Further, the assembly processing apparatus according to the present invention is an assembly processing apparatus for performing an assembly processing process on a device carried by a carrying device between a plurality of steps including an assembly working process step. A storage means for storing information about the device is carried,
The assembling process is an assembling process using the information about the device from the storage means to solve the above problem.

Here, the storage means stores information about the device obtained in the previous step of the assembly processing, and the assembly processing relates to the device in the previous step stored in the storage means. Adjustment processing using information is preferable.

Further, the preceding step is a biaxial adjustment processing step of the objective lens of the optical pickup device, and the assembly processing processing uses information of the biaxial adjustment processing step of the objective lens stored in the storage means. It is preferable that the adjustment processing is performed with respect to the inclination of the objective lens of the optical pickup device.

[0013]

Since the storage means for storing the information about the device in the previous process is carried to the subsequent process together with the device, the assembly process can be performed in the subsequent process by using the information about the device in the previous process. Can be shortened.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a carrying device and an assembling / processing device according to the present invention will be described below. In this embodiment, an objective lens of an optical pickup device which is a device such as a compact disc (CD) player is adjusted. A transporting device and an assembling processing device applied at that time. First, a schematic configuration of a specific example of the optical pickup device will be described with reference to FIG.

The optical pickup device is a device for writing and / or reading an information signal to / from a disc which is an information signal recording medium such as an optical disc or a magneto-optical disc. This optical pickup device is used by being installed in a recording and / or reproducing device for recording and / or reproducing information signals on the disc.

As shown in FIG. 2, the optical pickup device 10 comprises an optical system block 41 and a lens barrel portion 42 fixedly attached to the lower side of the optical system block 41. The optical system block 41 is integrally formed of a synthetic resin material or the like. The optical system block 41 has a shaft insertion hole 43, and the guide shaft 61 disposed in the recording and / or reproducing apparatus is inserted into the shaft inserting hole 43 to thereby cause the recording and / or reproducing apparatus. Inside the guide shaft 6
1 is supported so as to be movable. Further, the optical system block 41 has a rack portion 44, and a pinion gear 62 disposed in the recording and / or reproducing apparatus is meshed with the rack portion 44, and the pinion gear 62 is rotated, It is moved.

The lens barrel portion 42 is made of a material such as metal.
It is formed with a through hole portion for accommodating and holding various optical components inside. In the through hole portion of the lens barrel portion 42,
As optical components, a semiconductor laser 45, a diffraction grating, a beam splitter, a collimator lens, and a photodetector such as a photodiode are housed and held. In the lens barrel portion 42, the light flux emitted from the semiconductor laser 45 is emitted upward to the outside of the lens barrel portion 42 via the diffraction grating, the collimator lens, and the like.

On the upper surface of the optical system block 41, 2
An objective lens driving device (hereinafter appropriately referred to as a biaxial portion) which is an axial actuator is attached. The biaxial portion has a base member 46, and is configured on the base member 46. The base member 46 has a through hole substantially in the center and is formed in a substantially flat plate shape with a metal material or the like.
The base member 46 has a plurality of screw holes, and the screw 63
Is fixed to the optical system block 41. Here, by adjusting the tightening of the screw 63, the inclination of the base member 46 with respect to the optical system block 41 is adjusted. This base member 46
The adjustment of the inclination of is the adjustment of the inclination of the objective lens 52 described later, that is, SKEW adjustment.

The magnetic yoke 4 is mounted on the base member 46.
7a and 47b are attached. The magnetic yokes 47a and 47b are formed of a highly magnetic permeable material or the like,
On both sides of the base member 46, the base member 46 is vertically provided. A pair of drive coils 48a and 48b are attached to the magnetic yokes 47a and 47b, respectively.

The flexible arm 4 is attached to the base member 46.
A lens bobbin 51 is supported via 9. The flexible arm 49 is made of a flexible material such as a synthetic resin material and formed into an arm shape. The lens bobbin 51 is attached to the tip end of the flexible arm 49, and movably supports the lens bobbin 51.

The lens bobbin 51 has a yoke portion 50.
A pair of magnets is attached via a and 50b. These magnets are inserted correspondingly in the drive coils 48a and 48b. An objective lens 52, which is an optical component, is attached to the lens bobbin 51. The objective lens 52 is positioned and supported substantially above the central portion of the optical system block 41 so that the light beam emitted from the lens barrel portion 42 is incident on the objective lens 52.

The biaxial portion, which is an objective lens driving device for driving the objective lens 52, causes the lens bobbin 51 to move to the optical axis of the objective lens 52 by supplying a driving current to the driving coils 48a and 48b. It is configured to move and operate in the axial direction and the direction orthogonal to the optical axis direction.

In the optical pickup device having such a structure, the light beam emitted from the semiconductor laser 45 and emitted from the lens barrel portion 42 is the objective lens 52.
Is incident on the recording and / or reproducing apparatus and is focused and irradiated on the signal recording section of the disk which is held and rotated in the recording and / or reproducing apparatus. The light beam applied to the signal recording unit is modulated and reflected by the signal recording unit according to the information recorded in the signal recording unit, and passes through the collimator lens and the beam splitter to detect the photodetector. And is detected by this photodetector. The electric signal output from the photodetector is a signal obtained by reading the information recorded on the disc.

The objective lens driving device 52 is
By moving the lens bobbin 51 according to the drive current, the focal point of the light beam formed by the objective lens 52 is always positioned on the recording track of the signal recording portion of the disc.

The optical pickup device is moved along the guide shaft 23 so that information signals can be written / read on / from the inner and outer circumferences of the disc.

Since the biaxial portion is attached to the base member 46 as described above, if the inclination of the base member 46 with respect to the optical system block 41 is adjusted, the inclination of the objective lens 52, That is, SKEW adjustment will be performed. The optical system block 4 of the base member 46
Since the adjustment of the inclination with respect to 1 is performed by the screw 63 as described above, it can be said that the adjustment of the inclination of the objective lens 52 is also performed by the screw 63. This screw 63 is called a lens tilt adjusting screw.

The SKEW adjustment of the objective lens 52 is performed as a post-process in which the position adjustment process in the biaxial directions (XY directions) is the pre-process.

The position adjustment in the biaxial directions means the objective lens 52.
This is the adjustment of the position on the lens bobbin 51 in the XY directions. Specifically, the camera recognizes the beam emitted from the semiconductor laser that has passed through the objective lens 52, and the objective lens is adjusted so that the position of the beam is aligned with the beam position when the laser of the master device is turned on. Is an adjustment to move automatically. So in this case,
The information about the device is laser beam position adjustment data.

The SKEW adjustment step is an adjustment relating to the inclination (SKEW) of the objective lens 52, and is performed by turning the lens inclination adjusting screw.

Next, a schematic structure of the present embodiment for carrying the optical pickup device 10 and processing it will be described with reference to FIG.

In this embodiment, as shown in FIG. 1, storage means for storing position adjustment data, which is information about the optical pickup device 10 obtained in the position adjusting process in the two axial directions, that is, laser beam position information. For example, a moving body (hereinafter referred to as a platen) 23 having an LSI card 21 attached together with the optical pickup device 10 is attached to the belt conveyor 2
And a carrier device 20 that is placed on the carrier 4 and carries the carrier device 2.
Take in the platen 23 transported by 0
It has a SKEW adjusting device 30 for performing SKEW adjustment of the objective lens 52 of the optical pickup device 10 by using the position adjusting data stored in the SI card 21.

The SKEW adjusting device 30 includes a loading / unloading station 32 for loading / unloading the platen 23 placed on the belt conveyor 24 and conveyed.
A position adjustment data reading station 33 for reading the position adjustment data from the LSI card 21 on the platen 23 taken in by the taking in / out station 32;
The SKEW adjustment station 34 that performs SKEW adjustment based on the position adjustment data read by the position adjustment data reading station 33, and the SK at the SKEW adjustment station 34
The adjustment data writing station 35 writes the EW adjustment data to the LSI card 21. Further, the SKEW adjusting device 30 is rotated counterclockwise by 90 degrees to move the platen 23 to the stations 32,
It has a rotary moving body (hereinafter referred to as an index table) 31 that moves instructed to 33, 34 and 35 in order. The rotation of the index table 31 by 90 degrees is an intermittent rotation, and each work is performed at each station when stopped.

First, the platen 23 to which the optical pickup device 10 whose position in the biaxial direction has been adjusted and the LSI card 21 storing the position adjustment data are attached is
It is taken into the SKEW adjusting device 30 at the take-in / out station 32. Next, the index table 31 is 9
The platen 23 is rotated to 0 ° and moved to the position adjustment data reading station 33.

The position adjustment data reading station 33 reads the position adjustment data from the LSI card 21. Next, the index table 31 rotates 90 degrees to move the platen 23 to the SKEW adjusting station 34.

In this SKEW adjusting station 34, an XY table for correcting the position of the optical pickup device 10 in the XY directions is prepared based on the position adjusting data of the biaxial direction adjusting process read by the position adjusting data reading station 33. After moving, adjust SKEW.

In the SKEW adjustment at the SKEW adjusting station 34, the beam emitted from the semiconductor laser of the optical pickup device 10 is searched by the SKEW beam search camera, and then the light and shade of the interference ring generated around the beam is searched.
The SKEW adjustment camera captures the image, processes the image, and adjusts the tilt of the objective lens by turning the lens tilt adjustment screw so that the gradation is uniform.

When the SKEW adjustment is completed, the index table 31 rotates 90 degrees, and the platen 23
To the adjustment data writing station 35. In the adjustment data writing station 35, the SKEW adjustment data made in the SKEW adjustment station 34 is stored in the LSI.
Write on the card 21.

At the adjustment data writing station 35
The platen 23 on which the LSI card 21 in which the SKEW adjustment data is written is placed together with the optical pickup device 10.
Is moved to the intake / exhaust station 32 by the 90 ° rotation of the index table 31, and is ejected onto the belt conveyor 24.

Next, details of the operation of this embodiment from the two-axis direction position adjusting process which is a pre-process to the SKEW adjusting process which is a post-process will be described with reference to FIG.

FIG. 3A shows the visual field 70 of the biaxial direction adjusting camera used in the biaxial direction position adjusting process. Further, FIG. 3B shows a visual field 73 of the SKEW beam search camera. Furthermore, what is shown in FIG. 3C is
This is the field of view 74 of the SKEW adjustment camera.

The optical pickup device 10 emits a beam 71 from the semiconductor laser 45. This beam 71
It is recognized by the two-axis direction adjustment camera and is driven into the adjustment driving area 72 so as to be aligned with the beam position when the laser of the master device is turned on. As a result, the position of the objective lens 52 in the XY directions is adjusted. The position adjustment data of the objective lens 52 in the XY directions is stored in the LSI card 21, which is a storage unit, as described above. Then, the LSI card 21 is attached to the platen 23 together with the optical pickup device 10, and is transported to the SKEW adjusting device 30 by the transport device 20. The biaxial adjustment camera has a horizontal field of view of about 440 μm and a vertical field of view of about 330 μm when the magnification of the camera is 20 times. Also, the adjustment drive area 72 is a square,
The length of one side is about 40 μm.

The platen 23 transported by the transport device 20 is transferred to the loading / unloading station 32.
It is taken into the SKEW adjusting device 30 by. The platen 23 taken in is 9 of the index table 31.
It moves to the position adjustment data reading station 33 by the counterclockwise rotation of 0 degree. The position adjustment data reading station 33 reads the position adjustment data from the LSI card 21, as described above.

Then, the index table 31 has 90
The platen 23 is moved to the SKEW adjusting station 34 by rotating once. At this time, first, the XY table for correcting the position of the optical pickup device 10 in the XY directions is moved based on the position adjustment data of the two-axis direction adjustment process read by the position adjustment data reading station 33.

Therefore, the beam 71 is in the visual field 73 of the SKEW beam search camera. Note that this SKEW beam search camera has, for example, a magnification of 60.
When doubled, the field of view in the horizontal direction of the screen is about 150 μm and the field of view in the vertical direction of the screen is about 110 μm.

Then, at the SKEW adjustment station 34, SK
The beam 7 in the field of view 74 of the SK EW adjustment camera is captured by the high magnification camera for EW adjustment, that is, as shown in FIG. 3C.
Image processing of the shade of the interference ring 75 generated around 1
The tilt of the objective lens is corrected by rotating the lens tilt adjusting screw so that the shading becomes uniform. For example, in C of FIG. 3, the interference ring 75 is divided into four equal parts as shown in the drawing, and they are a, b, c, and d, respectively, and the difference between (a + b) and (c + d), (a + c)-(b + d), Adjust by turning the adjustment screw so that the difference in shades of is even. Note that this SKEW adjustment camera has a field of view in the horizontal direction of the screen of about 30 μ when the magnification of the camera is 300 times, for example.
m, and the field of view in the vertical direction of the screen is about 20 μm.

Here, SK for performing SKEW adjustment as described above.
A specific example of the EW adjustment device 30 will be described with reference to FIG.

The laser beam emitted from the semiconductor laser of the optical pickup device 10 through the objective lens 52 is magnified 60 times by the objective lens 80 and enters the total reflection mirror 81. The total reflection mirror 81 totally reflects the expanded laser beam and makes it enter the half mirror 82. The half mirror 82 transmits half of the incident laser beam and makes it enter the harm mirror 85, and reflects the other half and makes it enter the focus camera 83. The half mirror 85 transmits half of the laser beam transmitted through the half mirror 82 and makes it incident on the harm mirror 87, and reflects the other half and makes it incident on a beam search camera 86 having a magnification of 60 times.

Focus adjustment of the laser beam incident on the beam search camera 86 is performed by focusing the laser beam reflected by the half mirror 82 on the focus camera 83.
The focus servo unit 84 generates a servo signal from the projected laser beam and supplies the servo signal to the focus coil in the optical pickup device 10.

Here, in the present embodiment, as described with reference to FIG. 1, the LSI card 21 is a preprocess.
Since the position adjustment data in the axial adjustment process is stored and conveyed, the position adjustment data in the two axial directions is read from the LSI card 21 in the SKEW adjustment process, which is a subsequent process, and the XY direction of the optical pickup device 10 is read. Move the XY table to correct the position. Therefore, the laser beam does not shift out of the field of view of the beam search camera 86.

The focus-adjusted laser beam projected on the beam search camera 86 is controlled by the control computer 91, and the beam search as described with reference to FIG. 3B is performed.

The half mirror 87 transmits half of the laser beam transmitted through the harm mirror 85 and makes it incident on the eyepiece 89, and reflects the other half and makes it incident on the focus camera 88. This eyepiece 89
The laser beam transmitted through the half mirror 87 is magnified 5 times and is incident on the SKEW adjustment camera 90 having a magnification of 300 times.

Here, in the focus adjustment of the laser beam incident on the SKEW adjustment camera 90, the laser beam reflected by the half mirror 87 is adjusted by the focus camera 88.
The focus servo unit 84 generates a servo signal from the projected laser beam and supplies the servo signal to the focus coil in the optical pickup device 10.

The focus-adjusted laser beam projected on the SKEW adjustment camera 90 is image-processed by the control computer 91, and the SKEW adjustment as described using FIG. 3C is performed.

A monitor television 92 is connected to the control computer 91, and images such as those shown in FIGS. 3B and 3C displayed on the beam search camera 86 and the SKEW adjustment camera 90 are displayed. Can be monitored.

The control computer 91 also includes
A driver 93 that has a SKEW adjusting motor and adjusts the lens tilt adjusting screw is connected. The driver 93 equipped with this SKEW adjustment motor is controlled by the control computer 91 so that the shade of the interference ring 73 generated around the laser beam 71 image-processed by the control computer 91 becomes uniform, and the lens Adjust the tilt adjustment screw.

As described above, in the present embodiment, the XY position of the optical pickup device 10 is corrected based on the position adjustment data read by the position adjustment data reading station 33, and then the SKEW adjustment station 3 is read.
Since the SKEW adjustment is performed in step 4, most of the laser beams of the plurality of optical pickup devices can be brought into the field of view of the camera for beam search, and the adjustment tact of the SKEW adjustment machine can be shortened.

The present invention is not limited to the above-described embodiment, and, for example, in an assembly / processing apparatus, information to be stored in the storage means is information such as failure diagnosis, maintenance management, etc. of the assembly / processing apparatus. May be By doing so, the assembly processing apparatus can confirm the status of the assembly processing based on the information.

The device is not limited to the optical pickup device. Furthermore, the above steps are not limited to adjustment of the objective lens (biaxial adjustment and SKEW adjustment).

[0059]

The transport apparatus according to the present invention is a transport apparatus for transporting a device between a plurality of steps, and transports the storage means storing the information about the device obtained in the previous step to the subsequent step together with the device. Therefore, in the subsequent process, the assembly processing can be performed based on the information of the previous process.

Further, in the assembly processing apparatus according to the present invention, the information about the device from the storage means transferred together with the device is used for the device transferred by the transfer apparatus between a plurality of steps including the assembly processing step. Since the assembly processing is performed, the tact can be shortened.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of an optical pickup device.

FIG. 3 is a diagram for explaining the details of the operation of the embodiment shown in FIG.

FIG. 4 is a diagram showing a schematic configuration of a SKEW adjusting device for performing SKEW adjustment.

[Explanation of symbols]

 10 ... Optical pickup device 52 ... Objective lens 20 ... Conveying device 21 ... LSI card 23 ... Platen 24 ... Belt conveyor 30.・ ・ ・ SKEW adjustment device 31 ・ ・ ・ Index table 32 ・ ・ ・ ・ ・ Import / discharge station 33 ・ ・ ・ Position adjustment data reading station 34 ・ ・ ・ ・ ・ SKEW adjustment station 35 ・ ・ ・・ Adjustment data writing station

Claims (5)

[Claims] 1. A transporting apparatus for transporting a device between a plurality of steps, wherein a storage unit storing information on a device obtained in a previous step is transported to the subsequent step together with the device. 2. The device is an optical pickup device having a laser light source, and the information about the device is laser beam position information emitted from the laser light source to the optical pickup device through an optical system. The carrier device according to claim 1. 3. An assembly processing apparatus for performing assembly processing on a device transported by a transport apparatus between a plurality of steps including an assembly processing step, wherein the transport apparatus stores information about the device together with the device. An assembling and processing apparatus, wherein storage means is conveyed, and the assembling and processing is an assembling and processing using information on devices from the storing means. 4. The storage means stores information about the device obtained in the previous step of the assembly processing, and the assembly processing information stored in the storage means is information about the device in the previous step. The assembly processing apparatus according to claim 3, wherein the assembly processing is performed by using the adjustment processing. 5. The pre-process is a biaxial adjustment process of the objective lens of the optical pickup device, and the assembly process uses information of the biaxial adjustment process of the objective lens stored in the storage means. The assembly processing apparatus according to claim 4, wherein the assembly processing apparatus is an adjustment process regarding an inclination of an objective lens of the optical pickup device.