Optical disc storage rack and positioning method

Abstract

The present invention discloses a CD storage rack and a positioning method, belonging to the technical field of CD storage. The CD storage rack includes a accommodating rack, a first dividing ring, a second dividing ring, a first detection mechanism and a second detection mechanism. The accommodating rack is provided with accommodating grooves and accommodating groove numbers in a one-to-one correspondence. The first dividing ring and the second dividing ring are concentrically convexly provided on the accommodating rack. The first dividing ring is provided with positioning racks corresponding to the accommodating grooves in a one-to-one correspondence along the circumference. The second dividing ring is provided with a plurality of positioning grooves with different widths in sequence along the circumference, and the positioning grooves with different widths correspond to different numbers of positioning racks. When the second detection mechanism detects a certain positioning groove, the positioning accommodating groove number of the positioning accommodating groove corresponding to the last detected positioning rack can be obtained according to the number of positioning racks detected by the first detection mechanism. The CD storage rack has a simple structure and low cost. The positioning method is not only accurate in positioning, but also has no error accumulation.

Description

Technical Field

[0001] The present invention relates to the technical field of optical disc storage, and in particular to an optical disc storage rack and a positioning method. Background Art

[0002] With the progress of the times and the development of science and technology, various data have shown explosive growth, and more and more important data need to be preserved for a long time. Due to the defects of magnetic storage such as high price, complex maintenance, and high requirements for the use environment, optical storage, which can store data safely, at low cost, for a long time, and is easy to maintain, has gradually become popular. The optical disk library is an optical-mechanical-electrical integrated mass data storage device that uses standardized optical disks as data storage media. It is widely used for long-term or permanent storage of data information.

[0003] The optical disk storage device is a very important device in the optical disk library. The existing optical disk storage devices include cassette optical disk magazines, barrel optical disk magazines and turntable optical disk magazines. The cassette optical disk magazine is mainly composed of a magazine shell, up to dozens of drawers and locking devices. It is not only complex in structure, but also has high precision requirements for the optical disk library manipulator. The barrel optical disk magazine has a relatively simple structure, but because the optical disks are directly stacked, the gaps between the optical disks are very small, which not only leads to a significant increase in the precision requirements, complexity, and cost of the manipulator, but also because the optical disk library manipulator needs to move in three-dimensional space, the positioning principle is complex, and many sensors are required to cooperate, resulting in a complex structure of the entire optical disk library, a relatively high failure rate, a large volume, and a high cost. The turntable optical disk magazine generally uses an incremental turntable positioning method for positioning. The counting process of this incremental turntable positioning method is relatively time-consuming, and errors are prone to accumulation. During long-term operation, it takes a lot of time to calibrate and reposition, and the user experience is poor.

[0004] Therefore, how to provide an optical disk storage device with simple structure, simple and accurate positioning and low cost is a technical problem that urgently needs to be solved. Summary of the invention

[0005] An object of the present invention is to provide an optical disc storage rack, which has a simple structure, simple and accurate positioning, and low manufacturing and positioning costs.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An optical disk storage rack, comprising:

[0008] A disc accommodating rack, the disc accommodating rack being rotatable around its central axis, a plurality of accommodating slots for inserting optical discs being radially arranged on the top surface of the disc accommodating rack, a plurality of accommodating slot numbers being arranged along the circumference of the disc accommodating rack, the accommodating slot numbers being arranged in one-to-one correspondence with the accommodating slots;

[0009] A first indexing ring, the first indexing ring is convexly arranged on the bottom surface of the accommodating disk rack and is coaxially arranged with the accommodating disk rack, the first indexing ring comprises a plurality of positioning racks arranged in a ring array, the positioning racks are arranged in a one-to-one correspondence with the accommodating grooves;

[0010] A second indexing ring, the second indexing ring is convexly arranged on the bottom surface of the accommodating disk rack and is coaxially arranged with the accommodating disk rack, and a plurality of positioning grooves with different widths are sequentially arranged on the second indexing ring along the circumferential direction, and the positioning grooves with different widths correspond to different numbers of the positioning racks;

[0011] A first detection mechanism, used for detecting the positioning racks that sequentially pass through the first detection mechanism when the first indexing ring rotates with the accommodating disk rack;

[0012] A second detection mechanism, used for detecting the positioning grooves sequentially passing through the second detection mechanism when the second indexing ring rotates with the accommodating disk rack, the second detection mechanism and the first detection mechanism being arranged at intervals along the radial direction of the accommodating disk rack;

[0013] The optical disk storage rack is configured to obtain the positioning slot number of the positioning slot corresponding to the last positioning rack detected according to the number of positioning racks detected by the first detection mechanism within the duration when the second detection mechanism detects a certain positioning slot.

[0014] Preferably, with the first point on the accommodating disk rack as the starting point, the widths of the plurality of positioning grooves change regularly along the rotation direction of the accommodating disk rack;

[0015] The number of the positioning racks corresponding to the positioning grooves changes in an arithmetic progression or a geometric progression.

[0016] Preferably, a rotating shaft seat is arranged at the center of the accommodating disk rack, and a rotating shaft hole is arranged on the rotating shaft seat. The rotating shaft hole is used for inserting the rotating shaft, and the accommodating disk rack rotates around the rotating shaft when driven by the rotating driving device.

[0017] Preferably, the optical disc storage rack further comprises a pressure plate rack, which is coaxially arranged above the accommodating disc rack and connected to the top of the shaft seat, and a storage space for storing the optical disc is formed between the pressure plate rack and the accommodating disc rack.

[0018] Preferably, the optical disc storage rack also includes a locking ring, which is protruded on the bottom surface of the disc accommodating rack and is coaxially arranged with the disc accommodating rack. The locking ring is circumferentially provided with a locking groove, and the locking groove is used to cooperate with a locking device to achieve position locking of the optical disc storage rack.

[0019] Another object of the present invention is to provide a positioning method, which can quickly and accurately position the receiving slot on the optical disk storage rack, and the positioning process is simple and will not accumulate errors.

[0020] To achieve this object, the present invention adopts the following technical solutions:

[0021] A positioning method is used for the above optical disc storage rack, and the positioning method comprises the following steps:

[0022] The accommodating disk rack rotates around its central axis;

[0023] The first detection mechanism detects the first indexing ring, and at the same time, the second detection mechanism detects the second indexing ring;

[0024] When the second detection mechanism starts to detect a certain positioning groove on the second indexing ring, the first detection mechanism starts to count the positioning racks detected on the first indexing ring;

[0025] When the second detection mechanism cannot detect the positioning groove, the positioning accommodating groove number M of the positioning accommodating groove corresponding to the last detected positioning rack is determined according to the number of the positioning racks corresponding to the positioning grooves.

[0026] Preferably, the number of further rotations R of the positioning rack on the accommodating disc rack that needs to be rotated is obtained to rotate the target optical disc to the optical drive or the optical disc entrance and exit.

[0027] Preferably, after obtaining the number of re-rotation racks R that the positioning rack on the accommodating rack needs to rotate, the method further includes the following steps:

[0028] The first detection mechanism detects in real time that the positioning rack rotates the further rotating rack by the amount R;

[0029] The target optical disc on the accommodating disc rack is moved into the optical disc drive or the target optical disc is moved out of the optical disc entrance.

[0030] Beneficial effects of the present invention:

[0031] The present invention provides a CD storage rack, which includes a accommodating rack, a first indexing ring, a second indexing ring, a first detection mechanism and a second detection mechanism. The accommodating rack is provided with accommodating grooves and accommodating groove numbers in a one-to-one correspondence. The first indexing ring and the second indexing ring are concentrically convexly provided on the accommodating rack. The first indexing ring is provided with positioning racks corresponding to the accommodating grooves in a one-to-one correspondence along the circumference. The second indexing ring is provided with a plurality of positioning grooves with different widths in sequence along the circumference, and the positioning grooves with different widths correspond to different numbers of positioning racks. When the second detection mechanism detects a certain positioning groove, the positioning rack number of the positioning rack corresponding to the last detected positioning rack can be obtained according to the number of positioning racks detected by the first detection mechanism. The CD storage rack is not only simple in structure and low in cost, but also simple and accurate in positioning without error accumulation.

[0032] The present invention also provides a positioning method, which can simultaneously detect the first dividing ring by the first detection mechanism and the second dividing ring by the second detection mechanism when the accommodating disk rack rotates around the central axis, and when the second detection mechanism starts to detect a certain positioning groove, the first detection mechanism starts to count the detected positioning racks, and when the second detection mechanism completes the detection of the positioning groove, the positioning accommodating groove number of the positioning accommodating groove corresponding to the last detected positioning rack can be determined according to the number of positioning racks detected by the first detection mechanism. This positioning method is not only simple to operate, but also accurate in positioning and has no error accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the optical disk storage rack provided by the present invention;

[0034] Figure 2 It is a front view of the optical disk storage rack provided by the present invention;

[0035] Figure 3 It is a structural schematic diagram of the optical disc storage rack provided by the present invention after the disc pressing rack and the optical disc are hidden at a certain viewing angle;

[0036] Figure 4 It is a schematic structural diagram of the optical disc storage rack provided by the present invention after the disc pressing rack and the optical disc are hidden from another viewing angle;

[0037] Figure 5 It is a structural schematic diagram of the disc pressing frame of the optical disc storage rack provided by the present invention at a certain viewing angle;

[0038] Figure 6 It is a structural schematic diagram of the disc pressing frame of the optical disc storage rack provided by the present invention from another viewing angle;

[0039] Figure 7 yes Figure 4 A partial enlarged view of part A.

[0040] In the figure:

[0041] 1. accommodating disc rack; 101. accommodating slot; 102. accommodating slot number; 103. driving gear ring;

[0042] 2. First indexing ring; 201. Positioning rack;

[0043] 3. Second indexing ring; 301. Positioning groove;

[0044] 4. Platen frame; 401. Flat bottom; 402. Arc-shaped portion; 403. First docking structure; 404. Positioning structure; 41. Handle groove; 42. Handle;

[0045] 5. Locking ring; 501. Locking groove;

[0046] 6. Support ring; 7. Reinforcement plate; 8. Rotating shaft seat; 9. Second docking structure; 10. Optical disc. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] This embodiment provides an optical disk storage rack, which can be used in an optical disk storage device as a main structure for storing optical disks 10. Figures 1 to 4 As shown, the optical disk storage rack includes a disk accommodating rack 1, a first dividing ring 2, a second dividing ring 3, a first detection mechanism (not shown in the figure) and a second detection mechanism (not shown in the figure).

[0051] The accommodating disc rack 1 is the main structure for accommodating the optical disc 10. In the present embodiment, the accommodating disc rack 1 is a disc-shaped structure as a whole, including a spherical top surface and a bottom surface. A plurality of accommodating grooves 101 for inserting the optical disc 10 are radially arranged on the top surface. The width of the accommodating groove 101 is slightly larger than the thickness of the optical disc 10 to achieve the insertion of the optical disc 10. The plurality of accommodating grooves 101 are closely arranged to insert a large number of optical discs 10. In the present embodiment, the number of the accommodating grooves 101 is 400. Of course, in other embodiments, the number of the accommodating grooves 101 can be increased or decreased according to demand.

[0052] In addition, a plurality of receiving slot numbers 102 are arranged along the circumference of the receiving disc rack 1, and the receiving slot numbers 102 are arranged one by one corresponding to the receiving slots 101. In this embodiment, 400 receiving slots 101 have 400 receiving slot numbers 102, that is, they are numbered from 1 to 400, with number 1 corresponding to the first receiving slot 101 and number 400 corresponding to the 400th receiving slot 101. The receiving slots 101 are numbered to facilitate positioning of the receiving slots 101, thereby facilitating rapid locating of the target optical disc and taking out the target optical disc. When specifically numbering, they can be numbered according to 1, 2, 3, ..., 400.

[0053] A rotation drive device (not shown in the figure) is provided in the optical disk storage device. The accommodating disk rack 1 can rotate around the central axis of the accommodating disk rack 1 under the drive of the rotation drive device, so as to rotate the target optical disk to a specified position. In this embodiment, in order to realize the transmission connection between the accommodating disk rack 1 and the rotation drive device, a driving ring gear 103 is circumferentially provided on the outer wall surface of the accommodating disk rack 1. The rotation drive device includes a power mechanism and a driving gear. The power mechanism is transmission-connected to the driving gear, and the driving gear is meshed with the driving ring gear 103. Driven by the power mechanism, the driving gear can rotate the driving ring gear 103, thereby realizing the rotation of the accommodating disk rack 1. Optionally, the power mechanism is a motor. Of course, in other embodiments, other devices can also be used to drive the accommodating disk rack 1 to rotate around its central axis, which will not be described in detail here.

[0054] Optionally, a frustum-shaped shaft seat 8 is further provided at the center of the accommodating disk rack 1. The shaft seat 8 is provided with a shaft hole along the axial direction. The shaft hole is a circular hole for the shaft to pass through. Under the drive of the rotary drive device, the accommodating disk rack 1 can rotate around the shaft. In order to improve the structural strength of the accommodating disk rack 1, a plurality of reinforcing plates 7 are provided between the bottom surface of the accommodating disk rack 1 and the outer wall surface of the shaft seat 8. The plurality of reinforcing plates 7 are provided around the circumference of the shaft seat 8 and are arranged radially.

[0055] like Figure 4 As shown, the first indexing ring 2 is a circular ring structure, which is convexly arranged on the bottom surface of the accommodating disc frame 1 and is coaxially arranged with the accommodating disc frame 1. The first indexing ring 2 can rotate coaxially with the accommodating disc frame 1. In this embodiment, the first indexing ring 2 and the accommodating disc frame 1 are integrally formed to improve the integrity and structural strength; of course, in other embodiments, the first indexing ring 2 can also be an independent structure and welded or bonded to the accommodating disc frame 1 after manufacturing.

[0056] Specifically, the first indexing ring 2 includes a plurality of positioning racks 201 arranged in a circular array. The positioning racks 201 are rectangular block structures, one end of which is fixed to the bottom surface of the accommodating disk rack 1, and the other end is vertically protruding downward, and a gap is formed between two adjacent positioning racks 201. The number of positioning racks 201 is the same as the number of accommodating slots 101. In this embodiment, the number of positioning racks 201 is 400, and the 400 positioning racks 201 are arranged in a one-to-one correspondence with the 400 accommodating slots 101. That is, along the axial direction of the accommodating disk rack 1, a positioning rack 201 is arranged directly below each accommodating slot 101.

[0057] The first detection mechanism is used to detect the positioning rack 201 on the first dividing ring 2 when the first dividing ring 2 rotates with the accommodating disc rack 1. When the positioning rack 201 is detected, a detection signal, such as "1", is output. When the positioning rack 201 is not detected, that is, when the gap between the two positioning racks 201 is detected, a detection signal, such as "0", is output. Specifically, the first detection mechanism is fixedly arranged on an external structure or device that exists independently of the accommodating disc rack 1 and the first dividing ring 2, for example, it is fixed on a component or structure in the optical disc storage device. When the accommodating disc rack 1 and the first dividing ring 2 rotate, the first detection structure remains fixed, so that the positioning racks 201 passing through it one by one can be detected.

[0058] Optionally, the first detection mechanism is a photoelectric sensor, which includes a first transmitting end and a first receiving end, and the first transmitting end and the first receiving end are located on both sides of the first dividing ring 2. When the first dividing ring 2 rotates with the accommodating disk rack 1, if the positioning rack 201 rotates to between the first transmitting end and the first receiving end, the signal emitted by the first transmitting end can be blocked, so that the photoelectric sensor emits a detection signal "1"; and when the gap between the two positioning racks 201 rotates to between the first transmitting end and the first receiving end, the signal emitted by the first transmitting end cannot be blocked, so that the photoelectric sensor emits a detection signal "0".

[0059] like Figure 4 As shown, the second indexing ring 3 is a circular ring structure, which is convexly arranged on the bottom surface of the accommodating disk rack 1 and is coaxially arranged with the accommodating disk rack 1. The second indexing ring 3 is coaxially arranged with the accommodating disk rack 1. The second indexing ring 3 is nested concentrically with the first indexing ring 2. The second indexing ring 3 can be nested inside the first indexing ring 2 or outside the first indexing ring 2. In this embodiment, the second indexing ring 3 is nested inside the first indexing ring 2. A plurality of positioning grooves 301 with different widths are sequentially arranged on the second indexing ring 3 along the circumferential direction. The positioning grooves 301 with different widths need to correspond to different numbers of positioning racks 201. The "corresponding" here refers to the number of positioning racks 201 located in the triangular area formed by the two ends of the positioning groove 301 and the center line of the accommodating disk rack 1 when the area extends outward through the second indexing ring 3.

[0060] The second detection mechanism is used to detect the positioning grooves 301 passing through the second detection mechanism in sequence when the second indexing ring 3 rotates with the accommodating disk rack 1. When the second detection mechanism detects a certain positioning groove 301, it can output a detection signal, such as "0", and when the positioning groove 301 is not detected, that is, when the blocking structure between the two positioning grooves 301 is detected, a detection signal, such as "1" is output.

[0061] Specifically, the second detection mechanism is fixedly arranged on an external structure or device independent of the accommodating disc rack 1 and the second dividing ring 3, for example, fixed on a component or structure in the optical disc storage device. When the accommodating disc rack 1 and the second dividing ring 3 rotate, the second detection structure remains fixed, so that the positioning grooves 301 passing through it one by one can be detected. It should be noted that the second detection mechanism and the first detection mechanism are arranged at intervals along the same radial direction of the accommodating disc rack 1, so that when the second detection mechanism detects a certain positioning groove 301, the first detection mechanism can detect the positioning rack 201 corresponding to the positioning groove 301 to obtain the number of the corresponding positioning racks 201.

[0062] Optionally, the second detection mechanism is a photoelectric sensor, which includes a second transmitting end and a second receiving end, and the second transmitting end and the second receiving end are located on both sides of the second dividing ring 3. When the second dividing ring 3 rotates with the accommodating disk rack 1, if the positioning groove 301 rotates to between the second transmitting end and the second receiving end, the signal emitted by the first transmitting end cannot be blocked, so that the photoelectric sensor emits a detection signal "0"; and when the blocking structure between the two positioning grooves 301 rotates to between the second transmitting end and the second receiving end, the signal emitted by the second transmitting end can be blocked, so that the photoelectric sensor emits a detection signal "1".

[0063] The optical disk storage rack can accurately realize positioning by setting the first indexing ring 2, the second indexing ring 3, the first detection mechanism and the second detection mechanism, and obtain the rotation position of the accommodating disk rack 1 and the position of the optical disk 10 thereon. The specific positioning process is as follows: first, the optical disk storage rack rotates clockwise or counterclockwise under the drive of the rotation drive device, and the specific rotation direction is set in advance according to the demand; then, the first detection mechanism and the second detection mechanism start to work at the same time, when the second detection mechanism starts to detect the first positioning groove 301 passing through it, the first detection mechanism starts to count the positioning racks 201 passing through it, and when the second detection mechanism completes the detection of the positioning groove 301, the first detection mechanism counts the number of positioning racks 201 passing through it; finally, according to the number of positioning racks 201 corresponding to the positioning groove 301, the receiving groove number 102 of the receiving groove 101 corresponding to the last detected positioning rack 201 is obtained.

[0064] For example, when the second detection mechanism detects a certain positioning groove 301, the first detection mechanism detects eight positioning racks 201. Then, by searching a pre-set positioning table, the receiving slot number 102 of the receiving slot 101 corresponding to the eighth positioning rack 201 among the eight positioning racks 201 can be obtained. At this time, the receiving slot 101 corresponding to the eighth positioning rack 201 is called a "positioning receiving slot", and the corresponding receiving slot number 102 is called a "positioning receiving slot number".

[0065] It should be noted that the positioning table is manually set in advance, for example, one positioning slot 301 corresponds to eight positioning racks 201, and the eight receiving slots 101 corresponding to the eight positioning racks 201 have receiving slot numbers 102 of 200-207; and another positioning slot 301 of different widths corresponds to three positioning racks 201, and the eight receiving slots 101 corresponding to the three positioning racks 201 have receiving slot numbers 102 of 52-54. Since positioning slots 301 of different widths correspond to different numbers of positioning racks 201, when the number of positioning racks 201 corresponding to a certain positioning slot 301 is determined, the positioning receiving slot corresponding to the last positioning rack 201 and its positioning receiving slot number can be quickly found according to the previously set corresponding relationship between the receiving slot number 102, the receiving slot 101 and the positioning rack 201.

[0066] Optionally, in order to facilitate customization of the positioning table, a certain point on the accommodating disk rack 1 can be taken as the starting point (in the present embodiment, the point is referred to as the first point), and the widths of a plurality of positioning grooves 301 can be set to change regularly along the rotation direction of the accommodating disk rack 1, so that the number of positioning racks 201 corresponding to the positioning grooves 301 changes in an arithmetic progression or a geometric progression.

[0067] Taking the law of variation of arithmetic progression as an example, for example, the positioning groove 301 with the smallest width can be named as the first positioning groove, and a point close to the first positioning groove can be taken as the first point, so that the first positioning groove corresponds to a positioning rack 201, and the receiving groove number 102 of the receiving groove 101 corresponding to the positioning rack 201 is "1", and along the rotation direction of the accommodating disk rack 1, according to the law of variation of arithmetic progression, the second positioning groove and the third positioning groove correspond to six positioning racks 201 and eleven positioning racks 201 respectively, and the receiving groove number 102 of the receiving grooves 101 corresponding to these positioning racks 201 is included in the positioning table, and finally, the customization of the receiving groove number 102 of the receiving grooves 101 corresponding to 400 positioning racks 201 is completed by analogy.

[0068] like Figure 4 As shown, the optical disk storage rack further includes a support ring 6, which is disposed on the bottom surface of the accommodating disk rack 1 and is located on the inner side of the second indexing ring 3. By providing the support ring 6, the structural strength of the accommodating disk rack 1 can be greatly improved, and the influence of the opening of the accommodating groove 101 on the structural strength of the accommodating disk rack 1 can be compensated, thereby ensuring that the optical disk storage rack can remain intact and not deformed under load. Of course, in other embodiments, the support ring 6 can also be disposed between the first indexing ring 2 and the second indexing ring 3, or a plurality of support rings 6 can be provided, one of the support rings 6 is disposed on the inner side of the second indexing ring 3, and another support ring 6 is disposed between the first indexing ring 2 and the second indexing ring 3.

[0069] Furthermore, in order to improve the storage stability of the optical disc 10, as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the optical disk storage rack also includes a platen rack 4, which is a disc-shaped structure and includes a flat bottom 401 and an arc-shaped portion 402 protruding outward along the circumference of the flat bottom 401. The platen rack 4 is arranged above the accommodating disc rack 1, and the flat bottom 401 of the platen rack 4 abuts against the top surface of the rotating shaft seat 8, and a mounting shaft hole fixedly connected to the rotating shaft is arranged at the center of the flat bottom 401, and a connecting member is fixedly connected to the rotating shaft through the mounting shaft hole, thereby realizing the coaxial fixation of the platen rack 4 and the accommodating disc rack 1. When the accommodating disc rack 1 rotates under the drive of the rotary drive device, the platen rack 4 can rotate synchronously therewith.

[0070] In order to improve the assembly accuracy of the pressure plate frame 4 and the accommodating plate frame 1 and realize the rapid positioning of the pressure plate frame 4 and the accommodating plate frame 1, a positioning structure 404 is provided on the bottom surface of the pressure plate frame 4. In the present embodiment, the positioning structure 404 is an annular member arranged around the central axis of the pressure plate frame 4. The top of the rotating shaft seat 8 can be placed in the annular member, thereby realizing the preliminary positioning and assembly of the pressure plate frame 4 and the accommodating plate frame 1.

[0071] Optionally, a first docking structure 403 is further provided on the bottom surface of the pressure plate frame 4. The first docking structure 403 is an annular member provided at the connection between the flat bottom 401 and the arc-shaped portion 402. The first docking structure 403 is sleeved on the outside of the positioning structure 404. Figure 3 As shown, a second docking structure 9 is provided on the accommodating disc rack 1. The second docking structure 9 is also an annular member, which is sleeved on the outside of the rotating shaft seat 8 and has the same diameter as the first docking structure 403. When the pressure disc rack 4 and the accommodating disc rack 1 are assembled, the first docking structure 403 abuts against the second docking structure 9.

[0072] A storage space for storing the optical disc 10 is provided between the arc-shaped portion 402 of the pressure plate rack 4 and the accommodating disc rack 1. The pressure plate rack 4 can provide a pressing force on the top of the optical disc 10, thereby improving the storage stability of the optical disc 10 and preventing the optical disc 10 from falling out during rotation. Optionally, a plurality of pressure plate grooves are provided on the surface of the arc-shaped portion 402 of the pressure plate rack 4 close to the accommodating disc rack 1. The plurality of pressure plate grooves are radially arranged and correspond to the accommodating grooves 101 arranged on the accommodating disc rack 1. When placing the optical disc 10, the upper part of the optical disc 10 is clamped in the pressure plate groove, and the lower part is clamped in the accommodating groove 101, so as to further improve the stability.

[0073] Further optionally, if Figure 5As shown, a hand grip groove 41 is provided on the plate pressing rack 4 to facilitate the user to install the plate pressing rack 4. In this embodiment, the hand grip groove 41 includes a thumb groove, an index finger groove, a middle finger groove, a ring finger groove and a little finger groove, and the thumb groove, the index finger groove, the middle finger groove, the ring finger groove and the little finger groove are arranged according to the bionic principle to cater to the positions of the five fingers of the user when operating with one hand. Optionally, a handle 42 is also provided at the center of the plate pressing rack 4, and the user can lift or put down the plate pressing rack 4 through the handle 42 to achieve the purpose of pressing and fixing the optical disc 10 in the disc rack 1 as a whole to prevent it from falling out, and facilitate transportation, fixing and overall replacement.

[0074] Furthermore, if Figure 4 As shown, the optical disk storage rack further includes a locking ring 5, which is convexly disposed on the bottom surface of the accommodating disk rack 1 and is coaxially disposed with the accommodating disk rack 1. In this embodiment, the locking ring 5 is disposed between the first indexing ring 2 and the second indexing ring 3. Figure 7 As shown, the locking ring 5 is provided with a locking groove 501 along the circumference, and the locking groove 501 is used to cooperate with the locking device to achieve the position locking of the optical disk storage rack. The locking device is arranged in the optical disk storage device, and includes a freely retractable locking pin. When the optical disk storage rack rotates the target optical disk or the target receiving slot to the target position, the locking pin can be extended and inserted into the locking groove 501 of the locking ring 5, so as to achieve the temporary fixation of the receiving disc rack 1, and avoid the receiving disc rack 1 from accidentally rotating when the optical disk 10 is taken in and placed, and the receiving disc rack 1 from accidentally rotating when the rotating drive device is not powered on. Optionally, the number of locking grooves 501 is equal to the number of receiving slots 101, and they are arranged one by one to achieve all-round and multi-angle locking. Of course, in other embodiments, the number of locking grooves 501 can also be set to be less than the number of receiving slots 101 according to needs.

[0075] In this embodiment, the optical disk storage device also includes a controller, which can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer, or it can be composed of multiple distributed single-chip microcomputers. The control program can be run in the single-chip microcomputer to control the rotation drive device, locking device, etc. to realize their functions.

[0076] By adopting the indexing ring structure, the optical disk storage rack not only has high positioning accuracy and fast positioning speed, can effectively eliminate cumulative errors, but also reduces the number of detection mechanisms used and the accuracy level, and reduces the manufacturing cost. In addition, by designing a disc-shaped accommodating disk rack 1, up to hundreds of optical disks 10 can be stored, the structure is compact, the capacity of the optical disk 10 is effectively increased, the space utilization rate is improved, the volume of the optical disk storage device is reduced, and the transportation, transfer and handling are convenient.

[0077] This embodiment also provides a positioning method for the above optical disc storage rack, the positioning method comprising the following steps:

[0078] S1, the accommodating disk rack 1 rotates around its central axis;

[0079] Specifically, the accommodating disk rack 1 is driven by a rotary driving device and rotates around a rotating shaft.

[0080] S2, the first detection mechanism detects the first indexing ring 2, and at the same time, the second detection mechanism detects the second indexing ring 3;

[0081] When the second detection mechanism starts to detect a certain positioning groove 301 on the second indexing ring 3, the first detection mechanism starts to count the positioning racks 201 detected on the first indexing ring 2;

[0082] When the second detection mechanism cannot detect the positioning groove 301 , the positioning groove number M of the positioning groove corresponding to the last detected positioning groove 201 is determined according to the number of positioning racks 201 corresponding to the positioning grooves 301 .

[0083] The receiving groove 101 corresponding to the last detected positioning rack 201 is called a positioning receiving groove, and the receiving groove number 102 of the receiving groove 101 corresponding to the last detected positioning rack 201 is called a positioning receiving groove number, and is represented by the letter “M”.

[0084] It should be noted that, since the position of the accommodating disk rack 1 is not fixed before the rotary drive device is powered on, the first positioning groove 301 detected by the second detection mechanism is also not fixed, and it can be any positioning groove 301 on the second dividing ring 3. In addition, the second detection mechanism is a photoelectric sensor. When the signal detected by the second detection mechanism changes from "0" to "1", it means that the second detection mechanism cannot detect the first positioning groove 301. At this time, the number of positioning racks 201 detected by the first detection mechanism can be recorded, and the positioning receiving groove number of the positioning receiving groove corresponding to the positioning rack 201 detected by the first detection mechanism can be determined according to the pre-designed positioning table. In this embodiment, the receiving groove number 102 is represented by "M".

[0085] Furthermore, after the positioning of the receiving slot 101 on the receiving disc rack 1 is obtained, the target optical disc needs to be rotated to the optical drive or the optical disc entrance. Therefore, after the above step S2, the following steps are further included:

[0086] S3, obtaining the number of re-rotation racks R that the positioning rack 201 on the accommodating disk rack 1 needs to rotate;

[0087] S4, the first detection mechanism detects in real time that the positioning rack 201 rotates and then rotates the rack by a number R;

[0088] S5, moving the target optical disc on the disc rack 1 into the optical disc drive or moving the target optical disc out of the optical disc entrance.

[0089] The number of re-rotated racks R here refers to the number of racks that a positioning rack 201 on the accommodating disc rack 1 needs to rotate in the process of rotating the target optical disc to the optical drive or the optical disc entrance and exit, starting from the positioning rack 201 corresponding to the positioning groove corresponding to the positioning groove label M detected by the first detection mechanism.

[0090] Specifically, taking the case where the accommodating disk rack 1 rotates in a direction in which the accommodating slot number 102 gradually increases as an example, obtaining the number of re-rotating racks R that the positioning rack 201 on the accommodating disk rack 1 needs to rotate specifically includes the following steps:

[0091] According to the direction in which the receiving slot number 102 gradually increases, the number X of the positioning racks 201 between the optical drive position or the optical disc entrance position and the first detection mechanism position is obtained;

[0092] Determine the number of racks to be rotated R. When N≤M, R=X+MN;

[0093] When M<N≤M+X, R=X+MN;

[0094] When N>M+X, R=X+NM;

[0095] Wherein, N represents the target storage slot number corresponding to the target optical disc.

[0096] It should be noted that, since the position of the optical drive, the position of the optical disc entrance and the position of the first detection mechanism are all fixed, the number of the positioning racks 201 between the position of the optical drive and the position of the first detection mechanism, or between the position of the optical disc entrance and the position of the first detection mechanism, is a certain value (the fixed value is represented by X), and the fixed value is set in advance. In addition, the target accommodating slot number N is also known.

[0097] The above positioning method not only has high positioning accuracy and fast positioning speed, but also can effectively eliminate cumulative errors.

[0098] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A positioning method, characterized in that: Utilize CD storage racks; The optical disk storage rack comprises: A disc accommodating rack (1), the disc accommodating rack (1) being rotatable around its central axis, a plurality of accommodating slots (101) for inserting optical discs (10) being radially arranged on the top surface of the disc accommodating rack (1), a plurality of accommodating slot numbers (102) being arranged along the circumference of the disc accommodating rack (1), the accommodating slot numbers (102) being arranged in one-to-one correspondence with the accommodating slots (101); A first indexing ring (2), the first indexing ring (2) being protrudingly arranged on the bottom surface of the accommodating disk rack (1) and being coaxially arranged with the accommodating disk rack (1), the first indexing ring (2) comprising a plurality of positioning racks (201) arranged in a ring array, the positioning racks (201) being arranged in a one-to-one correspondence with the accommodating grooves (101); A second indexing ring (3), the second indexing ring (3) being convexly arranged on the bottom surface of the accommodating disk rack (1) and being coaxially arranged with the accommodating disk rack (1), the second indexing ring (3) being provided with a plurality of positioning grooves (301) with different widths in sequence along the circumferential direction, the positioning grooves (301) with different widths corresponding to different numbers of the positioning racks (201); A first detection mechanism, used for detecting the positioning racks (201) that sequentially pass through the first detection mechanism when the first indexing ring (2) rotates with the accommodating disk rack (1); a second detection mechanism, used for detecting the positioning grooves (301) that sequentially pass through the second detection mechanism when the second indexing ring (3) rotates with the accommodating disk rack (1), the second detection mechanism and the first detection mechanism being arranged at intervals along the radial direction of the accommodating disk rack (1); The optical disk storage rack is configured to be able to obtain the positioning accommodating slot number of the positioning accommodating slot corresponding to the last detected positioning rack (201) according to the number of the positioning racks (201) detected by the first detection mechanism within the duration when the second detection mechanism detects a certain positioning slot (301); The positioning method comprises the following steps: The accommodating disk rack (1) rotates around its central axis; The first detection mechanism detects the first indexing ring (2), and at the same time, the second detection mechanism detects the second indexing ring (3); When the second detection mechanism starts to detect a certain positioning groove (301) on the second dividing ring (3), the first detection mechanism starts to count the positioning racks (201) detected on the first dividing ring (2), and when the second detection mechanism completes the detection of the positioning groove (301), the first detection mechanism counts the number of the positioning racks (201) that have passed; When the second detection mechanism cannot detect the positioning groove (301), determining the positioning accommodating groove number M of the positioning accommodating groove corresponding to the last detected positioning rack (201) according to the number of the positioning racks (201) corresponding to the positioning grooves (301); The number of re-rotation racks R that the positioning rack (201) on the accommodating disc rack (1) needs to rotate is obtained to rotate the target optical disc to the optical drive or the optical disc entrance and exit.

2. The positioning method according to claim 1, characterized in that: Taking the first point on the accommodating disc rack (1) as the starting point, the widths of the plurality of positioning grooves (301) change regularly along the rotation direction of the accommodating disc rack (1); The number of the positioning racks (201) corresponding to the positioning grooves (301) changes in an arithmetic progression or a geometric progression.

3. The positioning method according to claim 1, characterized in that: A rotating shaft seat (8) is arranged at the center of the accommodating disc rack (1), and a rotating shaft hole is arranged on the rotating shaft seat (8). The rotating shaft hole is used for inserting a rotating shaft, and the accommodating disc rack (1) rotates around the rotating shaft under the drive of the rotating drive device.

4. The positioning method according to claim 3, characterized in that: The optical disk storage rack also includes a plate pressing rack (4), which is coaxially arranged above the accommodating disk rack (1) and connected to the top of the rotating shaft seat (8), and a storage space for storing the optical disk (10) is formed between the plate pressing rack (4) and the accommodating disk rack (1).

5. The positioning method according to claim 1, characterized in that: The optical disk storage rack further comprises a locking ring (5), wherein the locking ring (5) is protrudingly arranged on the bottom surface of the accommodating disk rack (1) and is coaxially arranged with the accommodating disk rack (1), and the locking ring (5) is circumferentially provided with a locking groove (501), and the locking groove (501) is used to cooperate with a locking device to realize position locking of the optical disk storage rack.

6. The positioning method according to claim 1, characterized in that: After obtaining the number of re-rotation racks R that the positioning rack (201) on the accommodating disk rack (1) needs to rotate, the following steps are also included: The first detection mechanism detects in real time that the positioning rack (201) rotates the re-rotating rack number R; The target optical disc on the accommodating disc rack (1) is moved into the optical disc drive or the target optical disc is moved out of the optical disc entrance and exit.

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