JPH06180920A - Recording medium ejector - Google Patents

Abstract

PURPOSE:To obtain a recording medium ejector in which grasping operation is carried out positively regardless of positional shift of recording medium containing position. CONSTITUTION:A picker hand 4 grasps a cartridge 2 at a grasping position and transfers the cartridge 2 thus grasped into a cartridge moving mechanism 11. When the picker hand 4 fails to grasp the cartridge 2, a central processing section 13 and a motor drive section 14 control the picker hand 4 to move to a retry position different from the grasping position and to retry grasping. The central processing section 13 is provided with an advance amount register 131 for storing the retry position as a grasping position for next cartridge 2 when the picker hand 4 succeeded to grasp the cartridge 2 through retry.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium take-out device for taking out a recording medium stored in a storage rack or the like, and more particularly to a recording medium take-out device for holding a recording medium and moving it to a predetermined position.

[0002]

2. Description of the Related Art Conventionally, a recording medium ejecting device of this type is
For example, in an optical disc collecting device, that is, in a device that stores a plurality of optical disc cartridges (hereinafter simply referred to as cartridges) that store optical discs as recording media in a storage rack, and selects or records a desired cartridge, It may be used to select the desired cartridge. In this case, the recording medium take-out device usually has a picker hand that holds the cartridge at a predetermined holding position near the storage shelf and moves the held cartridge to the recording / reproducing unit. Further, when the picker hand cannot grip the cartridge at the gripping position, it often has a means for retrying the gripping operation.

[0003]

However, as described above, since the gripping position is fixed in the conventional recording medium take-out device, the cartridge is correctly stored in the storage shelf due to incomplete storage or the like. If not, the positional relationship between the picker hand and the cartridge is misaligned, and there is a problem that it cannot be saved even if a retry is performed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording medium take-out device which can surely carry out a gripping operation without being affected by the displacement of the storage position of the recording medium.

[0005]

According to the present invention, in a recording medium take-out device having a picker hand for holding a recording medium at a holding position and moving the held recording medium to a predetermined position, the picker hand is provided with the recording device. A recording medium take-out device having a picker hand control unit for controlling the picker hand so as to move to a retry position different from the holding position and retry if the medium cannot be held. .

That is, in the retry when the gripping operation of the cartridge fails, a control system having a function of changing the amount of forward movement after the picker hand detects an FWD sensor described later can be obtained.

Further, according to the present invention, the picker hand control unit holds means for holding the retry position as a gripping position of the next recording medium when the picker hand can grip the recording medium by the retry. An apparatus for taking out the recording medium is obtained.

That is, in the retry, the advance amount when the retry is successful is held in the memory inside the central processing unit, which will be described later, and in the gripping operation performed next,
A control method that operates with the amount of advance of the data is obtained.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording medium ejecting apparatus according to the present invention will be described below with reference to the drawings.

In this embodiment, an optical disk collecting apparatus will be described as an example of a recording medium ejecting apparatus. FIG. 1 is a block diagram showing an optical disk assembling apparatus according to this embodiment.
In FIG. 1, the present optical disk collecting apparatus includes a storage shelf 1 for storing a cartridge 2, a cartridge moving mechanism 11 for moving the cartridge 2, and a cartridge moving mechanism 11.
And a central processing unit 13 connected to the cartridge moving mechanism 11 and the motor drive unit 14, respectively.

The belt 3 is attached to the cartridge moving mechanism 11.
It is connected to the picker hand 4 which is driven by the motor 9 via the rail 9 and can slide on the rail 10 in the forward / backward direction (vertical direction in the figure) and can hold the cartridge 2, and the rotation of the motor 9. As the encoder signal D,
The rotary encoder 8 that outputs in pulses and the FWD sensor 5 that detects the reference position when the picker hand 4 moves forward and sends the front position detection signal A to the central processing unit 13
And a BAC sensor 12 that detects that the picker hand 4 is located on the most retracted side and sends a rear end position detection signal C to the central processing unit 13.

The picker hand 4 includes an MDA sensor 7 which detects whether or not the picker hand 4 holds the cartridge 2 and sends a cartridge detection signal B to the central processing unit 13, and an FWD sensor 5 and a BAC sensor 12. A light-shielding flag 6 for shielding the two sensors from light is provided. Further, the picker hand 4 moves forward to grip the cartridge 2 in the storage shelf 1, and when it further advances, the picker hand 4 has the function of opening the cartridge 2, and conversely, when it is retracted in the gripped state, the picker hand 4 moves the cartridge 2. It has a function of drawing into the mechanism 11.

The central processing unit 13 includes a forward movement amount register 131 and a retry count register 132, which will be described later, and analyzes the front position detection signal A, the cartridge detection signal B, the rear end position detection signal C and the encoder signal D. Then, the motor drive unit control signal E is sent to the motor drive unit 14. The motor drive unit 14 receives the motor drive unit control signal E from the central processing unit 13 and the encoder signal D from the rotary encoder 8, and drives the rotation of the motor 9 of the cartridge moving mechanism 11, that is, the operation of the picker hand 4. The circuit is controlled by the signal F.
The central processing unit 13 and the motor drive unit 14 constitute a picker hand control unit that controls the operation of the picker hand 4.

Next, the function and operation of this apparatus will be described with reference to the flow charts of FIGS. 2, 3 and 4.

Now, when the power of this apparatus is turned on, the program starts to operate from that point, and in FIG. 2, the advance amount register 131 built in the memory in the central processing unit 13 is constructed.
"0" is input to (s1), and the central processing unit 13 waits for a command to remove the cartridge 2 (s2).
become. When this command is received, "2" is input to the retry count register 132 built in the memory in the central processing unit 13 (s3).

Here, the central processing unit 13 outputs the motor drive unit control signal E, and the motor drive unit 14 receiving this outputs the motor drive signal F to rotate the motor 9 (forward rotation), that is, the picker hand. The forward movement of 4 is started (s4). Then, the central processing unit 13 waits for the front position detection signal A from the FWD sensor 5 (s5). Here, the PICK distance, which is the amount of movement from the detection of the front position detection signal A from the FWD sensor 5 to the gripping of the cartridge 2 by the picker hand 4, when the front position detection signal A is received from the FWD sensor 5, The value of the retry count register 132 determines the amount of forward movement after the FWD sensor 5 detects it (s6). In this case, since the value of the advance amount register 131 is “0”, the picker hand 4 moves to P
It will be in the waiting state (s70) until it moves forward by the ICK distance.

When the picker hand 4 has finished moving by the PICK distance, the central processing unit 13 starts the backward rotation of the motor 9 in FIG. 3 (h1) and waits for the rear end position detection signal C from the BAC sensor 12 (h2). ), And when detected,
The motor 9 is stopped (h3). After this, the central processing unit 1
3 indicates whether or not the cartridge detection signal B is detected from the MDA sensor 7, that is, the picker hand 4 detects the cartridge 2
Is determined (h4), and if detected, the process ends normally.

When the cartridge detection signal B cannot be detected from the MDA sensor 7, that is, when the picker hand 4 cannot grip the cartridge 2, it is judged whether the retry count register 132 is "0" (h5),
If it is “0”, it is judged as an error because it is not successful even if the retry is performed.

However, since the value of the retry count register 132 is "2" at this time, the next process is performed. In the next processing, “1” is set from the retry count register 132.
Since the process (h6) of re-inputting the value obtained by subtracting into the retry count register 132 is performed, the value of the retry count register 132 becomes "1". Next, advance amount register 1
Add “1” to 31 and set the value again to the advance amount register 1
Since the process (h7) of putting the data into 31 is performed, the value of the advance amount register 131 becomes "1". In the next process, it is judged whether the value of the advance amount register 131 is "3" (h8). If it is "3", a process of putting "0" in the advance amount register 131 is performed (h9). Since the value of the amount-of-advance register 131 is “1”, the value of the amount-of-advance register 131 is not changed and the process proceeds to the flow shown in FIG.

In FIG. 4, in order to retry the retracting operation, the cartridge 2 that could not be gripped is reinserted into the storage shelf 1. First, the motor forward rotation is started (i1) and the FWD sensor 5 waits for detection (i2).
Becomes Here, the movement distance from when the FWD sensor 5 is detected and the picker hand 4 holds the cartridge 2 until it is not held again is named PUT distance, and when the FWD sensor 5 is detected, it moves by the PUT distance. Waiting state (i3). Next, the motor 9 is changed to the backward direction (i4). Here, the position where the picker hand 4 is sufficiently distant from the cartridge 2 accommodated in the accommodation shelf 1 is named a standby position, and a waiting state for movement to the standby position (i5)
Becomes When the picker hand 4 reaches the standby position, the picker hand 4 returns to a position between s ₃ and s _{4 in} FIG. 2, and the retraction operation of the cartridge 2 is performed again.

In FIG. 2, similarly to the first time, the motor 9 starts forward rotation (s4) and waits for detection by the FWD sensor 5 (s5). If detected, the value (s6) of the retry count register 132 is "1", so PICK
The process advances by a distance of +1 (mm) (s71), and the process (h1) of changing the rotation direction to the backward rotation shown in FIG. 3 is performed. After that, when the BAC sensor 12 is detected (h2), the motor 9
Stop (h3). At that time, if the MDA sensor 7 is detected (h4), that is, if the picker hand 4 is able to grip the cartridge 2, the process ends normally, and if not detected, the same retry as the above-described retry is performed. .

In the case of the second pull-in operation, since the value of the advance amount register 131 when the pull-in operation is successful is held, the PICK distance operates at the value when the operation is successful.

As described above, this device is used in the storage shelf 1
Even if the distance between the cartridge 2 inside and the cartridge moving mechanism 11 is deviated from the calculated value by, for example, ± 1 (mm), the cartridge 2 can be drawn into the cartridge moving mechanism 11. Note that the retry value is not limited to ± 1 (mm), and it is a narrower and larger range, for example, 0.5 (m
The range may be ± 3 (mm) in m) steps.

In the present embodiment, the present invention has been described by taking the optical disk assembling device for taking out the cartridge containing the optical disk as an example. However, the recording medium of the present invention is not limited to this cartridge, and may be a magnetic tape or the like. It may be. Further, in the present embodiment, the picker hand performs a linear movement operation in the forward and backward directions, but the movement operation of the picker hand may be any operation that moves the recording medium to a predetermined position, such as a rotation operation or a rotation operation. It may be a lifting operation or the like.

Further, in the present embodiment, the picker hand control unit is composed of the central processing unit and the motor drive unit, but it may be composed of a sequencer or the like.

[0026]

The recording medium ejecting apparatus according to the present invention comprises:
When the picker hand that grips the recording medium at the gripping position and moves the gripped recording medium to a predetermined position cannot grip the recording medium, the picker hand control unit moves to a retry position different from the gripping position. Since the picker hand is controlled so as to retry, the gripping operation can be reliably performed without being affected by the displacement of the storage position of the recording medium.

Further, if the picker hand control unit is provided with means for holding the retry position as the gripping position of the next recording medium when the picker hand can grip the recording medium by the retry, the next gripping operation is performed. Can be done efficiently.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an optical disk assembling apparatus which is a recording medium ejecting apparatus according to the present invention.

FIG. 2 is a flowchart showing the operation of the device shown in FIG.

FIG. 3 is a flowchart showing the operation of the device shown in FIG.

FIG. 4 is a flowchart showing the operation of the device shown in FIG.

[Explanation of symbols]

 1 Storage Shelf 2 Cartridge 3 Belt 4 Picker Hand 5 FWD Sensor 6 Light-shielding Flag 7 MDA Sensor 8 Rotary Encoder 9 Motor 10 Rail 11 Cartridge Moving Mechanism 12 BAC Sensor 13 Central Processing Section 14 Motor Drive Section 131 Forward Amount Register 132 Retry Count Register A Forward Position detection signal B Cartridge detection signal C Rear end position detection signal D Encoder signal E Motor drive control signal F Motor drive signal

Claims (2)

[Claims] 1. Holding a recording medium at a holding position,
In a recording medium take-out device having a picker hand that moves a gripped recording medium to a predetermined position, when the picker hand cannot grip the recording medium, the picker hand moves to a retry position different from the gripping position and retries. A picking-up device for a recording medium, having a picker hand control unit for controlling the picker hand as described above. 2. The picker hand control unit has means for holding the retry position as a gripping position of the next recording medium when the picker hand can grip the recording medium by the retry. Recording medium ejecting device.