CN112992472A

CN112992472A - Demagnetization device for computer information storage

Info

Publication number: CN112992472A
Application number: CN202110236546.7A
Authority: CN
Inventors: 刘亚志; 李珊; 李伟; 杨志刚; 黄永生
Original assignee: North China University of Science and Technology
Current assignee: North China University of Science and Technology
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2021-06-18
Anticipated expiration: 2041-03-03
Also published as: CN112992472B

Abstract

The invention discloses a demagnetization device for a computer information storage, belonging to the field of computers. The device is used for scraping the optical disc, and comprises: a slide base; the scraping device comprises an outer gear ring, a sun wheel, a planet carrier, a top column and three planet wheels, wherein the outer gear ring is rotatably arranged on the sliding seat, the planet carrier is fixedly arranged on the sliding seat, the three planet wheels are uniformly arranged on the periphery of the sun wheel in the circumferential direction, the sun wheel is matched with the planet wheels, the planet wheels are matched with the outer gear ring, and the planet wheels are rotatably arranged on the planet carrier; the top column is coaxially and rotatably arranged on the sun wheel; the driving device is arranged on the sliding seat and used for driving the sun wheel to rotate; wherein, the outer gear ring is provided with a scraper for scraping the surface of the optical disk. According to the invention, the scraping knife is driven to rotate by the scraping device, and the reflecting layer is scraped when the scraping knife rotates, so that the reflecting layer can be prevented from being embedded into the matrix; when the scraper rotates, the optical disk can be locked, and the optical disk is prevented from rotating.

Description

Demagnetization device for computer information storage

Technical Field

The invention relates to the field of computers, in particular to a demagnetization device for a computer information storage.

Background

Optical discs are articles that use optical information as a carrier for storage and for storing data. In a conventional mechanical hard disk, an optical disk is used as an information carrier. Although the number of mechanical hard disks has begun to decrease with the advent of solid state disks, mechanical hard disks are still used in large numbers due to certain inherent advantages of solid state disks, such as cost far below that of solid state disks. Optical discs are used as mechanical hard disks and a large number of information storage media, and after being scrapped, information confidentiality of the optical discs has been concerned by the public.

A large number of optical discs are discarded every year around the world, and for these waste optical discs, how to destroy information stored therein and how to avoid secondary pollution caused by the waste optical discs are gradually promoted.

At present, the processing method of the waste optical disc mainly comprises landfill and incineration, and most of the information processing adopts a crushing mode to destroy the information. However, many people are doubtful about the destruction of information after the optical disc is broken. In addition, since the substrate material of the optical disc is Polycarbonate (PC), it is not degradable, and remains in soil for a long time in both landfill and incineration, contaminating soil and groundwater.

The matrix of the optical disk, namely polycarbonate, is a material which is in short supply all over the world, has high price, and China mainly depends on import. The reflecting layer of the optical disk is mainly made of noble metal materials such as gold, silver and the like, and has higher recycling value.

At present, for the recycling of optical discs, there are mainly physical methods and chemical methods, wherein the physical methods mainly include mechanical crushing methods, modified mechanical crushing methods and ultrasonic separation methods.

The mechanical crushing method is to crush the optical disc directly, and has high loss rate, loss of the shape of the whole optical disc after crushing, difficulty in removing the non-polycarbonate material layer by a mechanical method, poor quality of recovered PC, incomplete destruction of information and doubt on the effect of the mode at present.

The improved mechanical crushing method adopts the recycled sand paper to polish the surface of the optical disk, polishes the reflecting layer, and can thoroughly destroy the original stored information, but in the method, the gravel of the sand paper is objectively uneven, so that the abrasion consumption is large, and meanwhile, the uneven structure can embed the reflecting layer into the polycarbonate substrate when polishing, so that the quality of recovered PC is influenced.

The ultrasonic separation method has stable separation effect and high recovery rate. But the equipment investment is large and the overall return rate is poor.

Disclosure of Invention

The invention provides a degaussing device for a computer information memory, which can solve the problems that when a physical method is adopted to degauss and recover an optical disk in the prior art, the recovered PC has poor quality and the information is not thoroughly eliminated.

A computer information storage memory degaussing apparatus for scraping an optical disc, comprising:

a slide base;

the scraping device comprises an outer gear ring, a sun wheel, a planet carrier, a support pillar and three planet wheels, wherein the outer gear ring is rotatably arranged on the sliding seat, the planet carrier is fixedly arranged on the sliding seat, the three planet wheels are uniformly arranged on the periphery of the sun wheel in the circumferential direction, the sun wheel is matched with the planet wheels, the planet wheels are matched with the outer gear ring, and the planet wheels are rotatably arranged on the planet carrier; the top column is coaxially and rotatably arranged on the sun wheel;

the driving device is arranged on the sliding seat and used for driving the sun gear to rotate; wherein,

and a scraper for scraping the surface of the optical disk is arranged on the outer gear ring.

Preferably, the scraping device further comprises a driving gear, a plurality of transition gears and a circular scraping plate, the scraping plates correspond to the transition gears one by one, and the ejection column is located on one side, far away from the sun gear, of the driving gear;

the driving gear is coaxially and fixedly arranged on the sun gear, the transition gears are rotatably arranged on the outer gear ring, the plurality of transition gears are circumferentially and uniformly arranged on the peripheral side of the driving gear, and the transition gears are matched with the driving gear; the scraper blade is coaxially and fixedly arranged on the transition gear, a scraper blade is arranged on the scraper blade, and the scraper blade is positioned on one side, far away from the outer gear ring, of the transition gear.

Preferably, the scraping device further comprises a first baffle plate, a second baffle plate and two limiting devices, wherein the two limiting devices are symmetrically arranged relative to the scraping device;

a containing space for containing the optical disk is arranged between the first baffle and the second baffle, and the first baffle is provided with a yielding hole for containing the scraping device to pass through;

the limiting device comprises a limiting motor and a blocking rod, the limiting motor is fixedly arranged on the second baffle, the blocking rod is rotatably arranged on the second baffle, and the limiting motor is used for driving the blocking rod to rotate;

the two gear rods at least have a first working state and a second working state;

when the optical disk is in a first working state, the two blocking rods are arranged in an inverted splayed shape and support the optical disk;

when the optical disk is in the second working state, the two stop levers are both in a vertical state, and the optical disk can pass between the two stop levers.

Preferably, the device also comprises a base, an electric telescopic rod, a spring, a travel switch and a processor;

the sliding seat is slidably arranged on the base, a containing hole is formed in the sliding seat, the travel switch is fixedly arranged in the containing hole, one end of the spring is fixedly connected into the containing hole, the other end of the spring is fixedly connected to the output end of the electric telescopic rod, and the output end of the electric telescopic rod is slidably arranged in the containing hole;

the travel switch, the electric telescopic rod, the driving motor and the limiting motor are all in signal connection with the processor.

Preferably, the top pillar is made of rubber materials.

The invention provides a degaussing device for a computer information storage, wherein a scraping device drives a scraper to rotate, when the scraper rotates, a reflecting layer is scraped, the surface of the scraper is smooth, and the reflecting layer can be prevented from being embedded into a base body; when the scraper rotates, the top column is abutted against the optical disk, so that the optical disk can be locked, and the optical disk is prevented from rotating.

Drawings

FIG. 1 is a first schematic structural diagram of a computer information storage demagnetizing device provided in the present invention;

FIG. 2 is a second schematic structural diagram (with a first baffle hidden) of a demagnetizing device for a computer information storage according to the present invention;

FIG. 3 is a schematic view of the position limiting device in an operating state;

FIG. 4 is a first schematic structural view of the scraping device and the driving device;

FIG. 5 is a second schematic structural view of the scraping device and the driving device;

FIG. 6 is a schematic view of the mounting structure of the drive shaft and the top post;

FIG. 7 is a front view of FIG. 4;

FIG. 8 is an enlarged view of a portion A of FIG. 7;

FIG. 9 is a cross-sectional view C-C of FIG. 7;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 11 is a system diagram of a computer information storage degaussing apparatus according to the present invention;

FIG. 12 is a schematic view of the mounting structure of the outer ring gear and the scraper;

fig. 13 is a schematic view of the installation structure of the squeegee and the scraper.

Description of reference numerals:

00 a base; 10 a first baffle plate; 11 a second baffle; 12, a limiting motor; 13 shift rods; 20 driving a motor; 21 a drive shaft; 30 outer gear ring; 31 planet wheels; 32 a planet carrier; 33 a sun gear; 40 transition gears; 41 driving a gear; 42 a scraper blade; 43 a top pillar; 50 electric telescopic rods; a 51 slide base; 60 springs; 61 travel switch.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

The first embodiment is as follows:

as shown in fig. 1 to fig. 2, a degaussing apparatus for a computer information storage according to an embodiment of the present invention is used for scraping an optical disc, and includes:

a slider 51;

the scraping device comprises an outer gear ring 30, a sun gear 33, a planet carrier 32, a top column 43 and three planet gears 31, wherein the outer gear ring 30 is rotatably arranged on a sliding seat 51, (for convenience of showing the structure, a part of a shell is hidden in the drawing), the planet carrier 32 is fixedly arranged on the sliding seat 51, the three planet gears 31 are uniformly arranged on the periphery of the sun gear 33 in the circumferential direction, the sun gear 33 is matched with the planet gears 31, the planet gears 31 are matched with the outer gear ring 30, the planet gears 31 are rotatably arranged on the planet carrier 32, and the sun gear 33, the outer gear ring 30, the planet carrier 32 and the three planet gears 31 jointly form a planet speed reduction structure; the top pillar 43 is coaxially and rotatably disposed on the sun gear 33, as shown in fig. 6, the top pillar 43 may adopt a structure shown in fig. 6, that is, an output shaft of the driving motor 20 passes through the sun gear 33 and extends to be connected to the top pillar 43, a T-shaped groove is formed on the top pillar 43, a T-shaped block is disposed at an end of the output shaft, and the T-shaped block is rotatably disposed in the T-shaped groove; the output shaft may be rotatably connected to the jack 43 by a tapered roller bearing as long as the jack 43 can rotate along the axis of the output shaft and cannot move in the extending direction of the output shaft. The top pillar 43 may be made of rubber or other materials with certain elastic deformation capability.

The driving device is arranged on the sliding seat 51 and is used for driving the sun wheel 33 to rotate; wherein,

the outer ring gear 30 is provided with a scraper for scraping the surface of the optical disc.

The driving device is a driving motor 20, the scrapers are sheet-shaped, the scrapers are perpendicular to a plane formed by the outer gear ring 30, and the extending direction of the scrapers is coincided with the radius of the outer gear ring 30.

In operation, the top pillar 43 is pressed against the center of the optical disc (the center of the optical disc has no reflective layer), and when the top pillar 43 is pressed against the optical disc, the optical disc and the top pillar 43 do not rotate. The driving motor 20 is started, the driving motor 20 drives the sun gear 33 to rotate through the driving shaft 21, the sun gear 33 drives the outer gear ring 30 to rotate through the planet gear 31, the optical disc is tightly supported by the ejection column 43, and the ejection column 43 is rotatably connected with the driving shaft 21, so that when the driving shaft 21 rotates, the ejection column 43 and the optical disc cannot rotate, the outer gear ring 30 rotates along the driving shaft 21 as a rotation center, and the outer gear ring 30 drives the scraper to scrape on the surface of the optical disc and separate the reflecting layer from the base layer.

Example two:

on the basis of the first embodiment, since the scraping generally requires high-speed rotation for scraping, the lower speed will result in increased cutting force, rapid temperature rise and reduced surface roughness. One complete revolution (360 degrees) of the scraper is needed for processing one revolution, that is, one complete revolution of the outer gear ring 30 is needed, and the outer gear ring 30 has a low rotation speed, high scraping cannot be easily realized, and the processing efficiency is low. As shown in fig. 4, 5, 9, 10, 12 and 13, in order to improve the processing efficiency without reducing the cutting rate, the scraping device further comprises a driving gear 41, a plurality of transition gears 40 and circular scraping plates 42, wherein the scraping plates 42 correspond to the transition gears 40 one by one, the top pillars 43 are positioned on one side of the driving gear 41 far away from the sun gear 33, and each scraping plate 42 is provided with a scraper;

the driving gear 41 is coaxially and fixedly arranged on the sun gear 33, the transition gears 40 are rotatably arranged on the outer gear ring 30, the plurality of transition gears 40 are circumferentially and uniformly arranged on the peripheral side of the driving gear 41, and the transition gears 40 are matched with the driving gear 41; the scraper 42 is coaxially and fixedly arranged on the transition gear 40, and the scraper 42 is positioned on one side of the transition gear 40 far away from the outer gear ring 30.

In operation, the driving motor 20 drives the sun gear 33 to rotate, when the sun gear 33 rotates, the driving gear 41 and the planet gear 31 are driven to rotate, the planet gear 31 rotates to drive the outer gear ring 30 to rotate, meanwhile, the driving gear 41 rotates to drive the transition gear 40 to rotate, and the transition gear 40 is rotatably arranged on the outer gear ring 30, so that the transition gear 40 can rotate at a high speed and revolve around the driving gear 41 at a lower speed. The scrapers 42 rotate to keep a high scraping speed, and if the scrapers 42 only rotate, the gap formed between two adjacent scrapers 42 cannot be scraped, and the revolution of the scrapers 42 solves the problem, and at this time, because the scrapers 42 can be provided in plurality, three scrapers are taken as an example in the present embodiment, and at this time, the outer ring gear 30 only needs to rotate by a small angle (less than 360 °) to scrape the whole reflecting layer, and the machining efficiency is improved while the high scraping speed is kept.

Example three:

on the basis of the first or second embodiment, as shown in fig. 3 and 7, in order to facilitate feeding, positioning and blanking of the optical disc, the present embodiment further includes a first baffle 10, a second baffle 11 and two limiting devices, and the two limiting devices are symmetrically arranged with respect to the scraping device;

a containing space for containing the optical disk is arranged between the first baffle plate 10 and the second baffle plate 11, and the first baffle plate 10 is provided with a yielding hole for containing the scraping device to pass through;

the limiting device comprises a limiting motor 12 and a blocking rod 13, the limiting motor 12 is fixedly arranged on the second baffle plate 11, the blocking rod 13 is rotatably arranged on the second baffle plate 11, and the limiting motor 12 is used for driving the blocking rod 13 to rotate;

the two shift levers 13 at least have a first working state and a second working state;

when in the first working state, the two blocking rods 13 are arranged in an inverted splayed shape, and the two blocking rods 13 support the optical disk;

when in the second working state, the two blocking rods 13 are both in a vertical state, and the optical disk can pass between the two blocking rods 13.

During operation, only the optical disc needs to be fed between the first baffle 10 and the second baffle 11 through the feeding device, the optical disc falls under the action of gravity and falls onto the two blocking rods 13, as shown in fig. 3, at the moment, the blocking rods 13 are in the first working state, the two blocking rods 13 arranged in the inverted splayed shape support the optical disc, and the optical disc is self-centered under the support of the two blocking rods 13 due to the circular shape of the optical disc, and vertical positioning of the optical disc is realized due to the action of the first baffle 10 and the second baffle 11.

Example four:

on the basis of the first to third embodiments, although the thickness of the optical disc has a standard size, on one hand, the thickness of the optical disc has an allowable deviation, and the thickness of the CD disc is generally 1.2mm thick, but the substrate thickness of the DVD disc is only 0.6mm, although the thickness of 0.6mm is too thin, the manufactured optical disc is also easy to break because of too thin, generally two pieces of 0.6mm are overlapped to form 1.2mm thick, but some poor DVD discs have a problem that the material is stolen from the base layer, and only a single base layer is adopted, so that the actual thickness of the optical disc cannot reach the standard 1.2mm thick; in addition, the printing layer on the surface of the optical disc adopts different printing modes (sticker or spraying) to cause different thicknesses of the whole optical disc, and when the position of the top column 43 is fixed, the optical disc becomes thin suddenly, clamping cannot be realized, and the scraper cannot effectively contact the reflecting layer. Since the scraping is performed after the scraping blade contacts the reflective layer (the reflective layer is thinner), the scraping is started after the scraping blade is in place (the positions are randomly distributed according to the actual thickness of the optical disc), and in order to achieve this, in the present embodiment, as shown in fig. 8 and 11, the base 00, the electric telescopic rod 50, the spring 60, the travel switch 61 and the processor are further included;

the sliding seat 51 is slidably arranged on the base 00, a containing hole is formed in the sliding seat 51, the travel switch 61 is fixedly arranged in the containing hole, one end of the spring 60 is fixedly connected in the containing hole, the other end of the spring is fixedly connected to the output end of the electric telescopic rod 50, and the output end of the electric telescopic rod 50 is slidably arranged in the containing hole;

the travel switch 61, the electric telescopic rod 50, the driving motor 20 and the limit motor 12 are all connected to the processor through signals.

When the optical disc drive device works, when an optical disc is fed between the first baffle 10 and the second baffle 11, the processor controls the electric telescopic rod 50 to extend, before the scraper 42 contacts the optical disc, due to the existence of the spring 60, the electric telescopic rod 50 can push the sliding base 51 to slide on the base 00 until the scraper contacts the optical disc (at this time, the support pillar 43 also abuts against the position of the central hole of the optical disc), the scraper 42 is subjected to resistance and is transmitted to the sliding base 51, the sliding base 51 does not move any more, at this time, the electric telescopic rod 50 continues to extend, the spring 60 compresses, the front end of the electric telescopic rod 50 abuts against the travel switch 61, the travel switch 61 sends a signal to the processor, the processor receives the signal and controls the driving motor 20 to rotate, when the driving motor 20 (which can adopt a servo motor) rotates for a preset number of turns or time, the optical disc reflective layer is scraped completely, the processor controls the electric telescopic rod, the limit motor 12 drives the blocking rods 13 to rotate to a second working state, a gap formed between the two blocking rods 13 is larger than the outer diameter of the optical disk, and after the jacking column 43 retreats, the optical disk loses support, and the optical disk falls under the action of gravity, and then the processor controls the limit motor 12 to rotate to an initial position to enter the next working cycle.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A computer information storage memory degaussing apparatus for scraping an optical disc, comprising:

a slide base;

2. The demagnetizing device for computer information storage devices of claim 1, wherein said scraping means further comprises a driving gear, a plurality of transition gears, and a circular scraping plate, said scraping plate corresponding to said transition gears one to one, said top pillar being located on a side of said driving gear away from said sun gear;

3. A computer information storage memory demagnetizing device as defined in claim 1 or 2, further comprising a first baffle, a second baffle, and two position limiting means, wherein said two position limiting means are symmetrically disposed with respect to said scraping means;

4. The computer information storage memory demagnetizing device of claim 1 or 2, further comprising a base, an electric telescopic rod, a spring, a travel switch, and a processor;

5. The apparatus for demagnetizing computer information storage devices of claim 3 or 4, wherein the top post is made of a rubber material.