KR19990000622A - Z axis feed method of CD auto changer - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

CD changer

2. The technical problem to be solved by the invention

In the Z-axis transfer method of the conventional CD changer, the difference when moving to the designated position of the magazine is about 0.25-0.30 mm, so that it is difficult to set the adjustment point, and the step difference when moving from the top to the bottom and from the bottom to the top This is to solve the problem that the error occurs.

3. Summary of Solution to Invention

A first step (ST51-ST55) of storing slot data (target slots), setting a number of slots to be moved and a sensor address, and initializing a time out; A second step (ST56-ST69) of moving the sensor by driving the motor at a speed of 15/16 until one slot before the designated target slot; A third step (ST70-ST81) of setting a counter and moving the sensor by driving the motor at a speed of 11/16 to one slot above the designated target slot; A fourth step (ST82) (ST83) for storing the Z-axis position of the slot found in the third step (ST70-ST81); A fifth step of moving the sensor by driving the motor at a speed of 7/16 in a reverse direction from the Z-axis position stored in the fourth step ST83, and finding a designated target slot and stopping all motors when the sensor is turned on It is characterized by consisting of the steps (ST84-ST96).

4. Important uses of the invention

Applies to the CD changer.

Description

Z axis feed method of CD auto changer

In general, CD auto changer (CD auto changer) is a system that can load a number of CDs in the magazine, and select one of them to play.

In the CD changer, the conventional Z-axis transfer method stores slot data, specifies the number of slots to move, sets a sensor address, and sets a time out as shown in FIGS. 1 and 2. A first step (ST1-ST5) to perform; A second step (ST6-ST19) of moving the sensor by driving the motor at a speed of 15/16 one slot before the designated target slot; A third step (ST20-ST28) of moving the sensor by driving the motor at the speed of 11/16 to the designated target slot; A fourth step ST29-ST34 for storing the Z-axis position of the slot found in the third step ST28; A fifth step (ST35-ST43) is performed in which the motor is driven at a speed of 7/16 in the reverse direction so that the overrun is corrected, and all the motors are stopped when the sensor address is on.

Referring to the accompanying drawings of the Z-axis transfer method of the conventional CD autochanger made as described above are as follows.

First, save the slot data (r0), set the sensor address (a) the number of slots to move, and then set the time out (200㎳ * 50 = 10 seconds) (ST1-ST5). If the sensor address is not off, rotate the motor at a speed of 15/16 and check until the sensor leaves the specified target slot and then check again until the target slot is found. Move it (ST6-ST19). Then, the sensor checks until it leaves the designated target slot and again until it finds the target slot. The motor lowers the driving force at the speed of 11/16 and moves the sensor one slot before the designated target slot (ST20). -ST28).

At this time, the Z-axis position of the found slot is stored (ST29-ST34), and the motor is lowered at the speed of 7/16, and then the sensor is moved to the lower direction to compensate for the overrun. Then, when the sensor finds the designated target slot, the sensor is turned on. At this time, the motor is stopped to play the desired CD (ST35-ST43).

In this conventional Z-axis feed method, when the current sensor position is at the top and the bottom of the designated target slot, the step difference when moving from the top to the designated address and from the bottom to the designated position is 0.25-0.30 mm. There was a problem that it is very difficult to set the adjustment point to the degree, and there was also a problem that an error occurs in the point setting due to the step when importing the CD mounted in the magazine.

Therefore, the present invention has been proposed to solve the general problems that occur when the Z-axis transfer of the general CD changer as described above, an object of the present invention is to move the specified address after a slot more than the designated address in the CD changer Z-changer's Z is designed to reduce the errors caused by steps when moving from the top to the designated address at the top and to the designated address at the bottom and to make the point setting uniform and uniform during assembly. It is to provide an axis feed method.

A method for achieving this object of the present invention;

A first step of storing slot data (target slots), setting a number of slots to be moved and a sensor address, and initializing a timeout; A second step of moving the sensor by driving the motor at a speed of 15/16 one slot before the designated target slot; Setting a counter and moving the sensor by driving the motor at a speed of 11/16 up to one slot above the designated target slot; A fourth step of storing the Z-axis position of the slot found in the third step; The fifth step is to move the sensor by driving the motor at a speed of 7/16 in the reverse direction from the Z-axis position stored in the fourth step, and find the designated target slot and stop the motor when the sensor is turned on.

Hereinafter, described in detail with reference to the accompanying drawings of the present invention.

1 is a schematic diagram of a Z-axis transfer method of a conventional CD changer,

2 is a flow chart showing a Z-axis transfer method of a conventional CD changer,

3 is a schematic diagram of a Z-axis transfer method of the CD auto changer according to the present invention,

4 is a flow chart showing a Z-axis transfer method of the CD auto changer according to the present invention,

5 is an experimental data of measuring an embodiment of the Z-axis transfer method of the CD autochanger according to FIG.

3 and 4 is a schematic view and a flowchart showing a Z-axis transfer method of the CD auto changer according to the present invention.

As shown, a first step (ST51-ST55) for storing slot data (target slots), setting the number of slots to move and the sensor address, and initiating a timeout; A second step (ST56-ST69) of moving the sensor by driving the motor at a speed of 15/16 until one slot before the designated target slot; A third step (ST70-ST81) of setting a counter and moving the sensor by driving the motor at a speed of 11/16 to one slot above the designated target slot; A fourth step (ST82) (ST83) for storing the Z-axis position of the slot found in the third step (ST70-ST81); The fifth step of moving the sensor by driving the motor at the speed of 7/16 in the reverse direction from the Z-axis position stored in the fourth step (ST83), finding the designated target slot and stopping all motors when the sensor is turned on (ST84) -ST96).

The operation of the Z axis transfer method of the CD autochanger according to the present invention configured as described above will be described with reference to the accompanying drawings.

First, save the slot data (r0), set the number of slots to move and the specified sensor address (a), and then set the time out (200㎳ * 50 = 10 seconds) (ST51-ST55). If the sensor address is not off, check until the sensor exits the designated target slot and then check again until the target slot is found, and rotate the motor at a speed of 15/16 one slot before the target slot. Move (ST56-ST69). Then, set the counter to move the sensor one slot beyond the specified target slot by driving the motor at 11/15 speed, and calibrate the position by checking until the sensor leaves the target slot and again until the target slot is found. (ST70-ST81).

At this time, the Z-axis position of the slot one slot further than the designated target slot found is stored (ST82) (ST83). The sensor is moved by driving the motor at the speed of 7/16 in the reverse direction from the currently stored Z-axis position, and the sensor is checked and corrected until the target slot is found, and then the sensor is turned on when the designated target slot is found. At this time, the motor can be stopped to play the desired CD (ST84-ST96).

When used in a magazine equipped with 50 sheets using the Z-axis transfer method according to the present invention, the results of the five times the axis transfer in the up and down direction to the 10, 20, 40 CD from the reference point is shown in FIG. 5 is shown. As shown, the average face difference when moving upwards and downwards to addresses 10, 20, and 40 is respectively 0.038, 0.014, 0.014 mm, and the maximum deviations are 0.06, 0.02, 0.05 mm, respectively. The difference between moving to the bungee and moving from the bottom to the designated location was compensated to within 0.05 mm.

As described in detail above, the present invention has the effect of making the adjustment point setting uniform and constant by improving the accuracy of 5 to 6 times in finding the designated target slot by using the changed Z axis transfer method in the CD auto changer. .

It also has the effect of reducing errors due to steps when importing CDs mounted in magazines.

According to the present invention, an error according to the step when moving from the top to the designated address and from the bottom to the designated address is performed by performing a Z-axis feed method that moves the slot by one slot more than the designated address in the CD changer. The purpose of this paper is to provide a Z-axis transfer method of the CD auto changer to reduce the number of points and make the point setting uniform and uniform during assembly.

Claims (1)

In the Z axis feed method of the CD auto changer, A first step (ST51-ST55) of storing slot data (target slots), setting a number of slots to be moved and a sensor address, and initializing a time out; A second step (ST56-ST69) of moving the sensor by driving the motor at a speed of 15/16 until one slot before the designated target slot; A third step (ST70-ST81) of setting a counter and moving the sensor by driving the motor at a speed of 11/16 to one slot above the designated target slot; A fourth step (ST82) (ST83) for storing the Z-axis position of the slot found in the third step (ST70-ST81); A fifth step of moving the sensor by driving the motor at a speed of 7/16 in a reverse direction from the Z-axis position stored in the fourth step ST83, and finding a designated target slot and stopping all motors when the sensor is turned on Z-axis transfer method of the CD auto changer, characterized in that consisting of steps (ST84-ST96).