Hard disk casing polishing device

Abstract

A hard disk shell polishing device includes: a dust removal pipe, a water tank and several work boxes arranged side by side. Each work box is provided with a loading platform and a polishing mechanism; an exhaust pipe is provided on the work box at a position facing the loading platform; the dust removal pipe includes a negative pressure pipe and multiple three-way pipes; the negative pressure pipe has an air inlet end and an air outlet end, and the three-way pipe is provided with a first branch pipe, a second branch pipe and a third branch pipe, the first branch pipe is connected to the exhaust pipe, the second branch pipe is connected to the water tank through a water pump, and the third branch pipe is connected to the negative pressure pipe, and a screen is provided in the third branch pipe; the hard disk shell polishing device also includes an external air pump connected to the negative pressure pipe. When the shell is polished, negative pressure is generated at the negative pressure pipe, so that the burrs and debris scraped off enter the exhaust pipe, and the dust removal operation is completed while the shell is polished in real time, so as to prevent dust from being retained in the work box.

Description

Technical Field

[0001] The invention relates to the field of hard disk production, and in particular to a hard disk shell polishing device. Background Art

[0002] During the production and processing of hard disks, the outer shell of the hard disk needs to be polished, that is, the burrs on the outer shell need to be removed and its outer wall needs to be polished smooth.

[0003] For example, the screw-free, circular, rotatable M2 hard drive case disclosed in application number 202120625884.5 has a sleeve (i.e., outer shell) in which is a cylindrical structure with openings at both ends. Due to its cylindrical shape, the dust generated during the grinding process will splash outward and remain in the device, making it difficult to clean.

[0004] Therefore, how to make the existing grinding equipment have dust removal capabilities is a problem that needs to be solved. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a hard disk casing polishing device, which adds a dust removal structure to collect dust generated during the polishing process and reduce the difficulty of cleaning the equipment.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A hard disk shell polishing device includes: a dust removal pipeline, a water tank and a plurality of work boxes arranged side by side;

[0008] Each of the working boxes is provided with a loading platform and a grinding mechanism, wherein the loading platform is used to carry the shell to be processed, and the grinding mechanism is used to grind the shell;

[0009] An exhaust pipe is provided on the working box at a position facing the loading platform;

[0010] The dust removal pipeline includes a negative pressure pipe and a plurality of three-way pipes; the negative pressure pipe has an air inlet end and an air outlet end, the three-way pipe is provided with a first branch pipe, a second branch pipe and a third branch pipe, the first branch pipe is connected to the exhaust pipe, the second branch pipe is connected to the water tank through a water pump pipe, the third branch pipe is connected to the negative pressure pipe, the third branch pipe is located between the first branch pipe and the second branch pipe, and a screen is provided in the third branch pipe;

[0011] The hard disk shell polishing device also includes an external air pump connected to the negative pressure tube.

[0012] In one of the embodiments, the working box is provided with a door.

[0013] In one embodiment, the grinding mechanism includes two grinding modules, which are respectively located at the upper and lower ends of the shell to be processed, each of the grinding modules includes a rotation drive assembly, a telescopic drive assembly and multiple grinding rod groups, each of the grinding rod groups includes a main brush rod and auxiliary brush rods located on both sides of the main brush rod, and telescopic rods are provided on the side of the main brush rod and the auxiliary brush rod away from the loading platform, the rotation drive assembly includes a motor and multiple driven gears, the driven gears are connected to the telescopic rod, and two adjacent driven gears are meshed, the motor is used to drive the telescopic rod to rotate, the telescopic drive assembly includes a telescopic drive part and a follower plate, each of the telescopic rods is connected to the follower plate, and the telescopic drive part is used to drive the telescopic rod to approach or move away from the loading platform.

[0014] In one embodiment, the main brush rod and the auxiliary brush rod are both provided with a plug-in portion and a grinding portion, the plug-in portion is connected to the telescopic rod, and a plurality of brush rings are provided on the grinding portion, the plurality of brush rings are spaced apart along the axial direction of the grinding portion, and each of the brush rings includes a plurality of bristles.

[0015] In one of the embodiments, the main brush rod is further provided with an eccentric portion, the eccentric portion is located between the plug-in portion and the polishing portion, and the angle between the axis line of the eccentric portion and the axis line of the plug-in portion is 45°.

[0016] In one embodiment, the loading platform includes two baffles and a plurality of support rings. The two baffles are spaced apart. A transition sleeve is provided on each baffle. The support ring is provided on one end of the transition sleeve away from the grinding rod group. The support ring is used to temporarily place the shell to be processed.

[0017] In one embodiment, the inner diameter of the transition sleeve increases gradually from the center to both ends.

[0018] In one embodiment, the telescopic rod comprises a bearing tube, a sliding rod and a nut, the bearing tube is connected to the driven gear, a sliding groove is provided on the inner wall of the bearing tube, the sliding rod passes through the bearing tube, and a spline matching the sliding groove is provided on the outer wall of the sliding rod, a plurality of elastic clips are provided on the end of the sliding rod, a guide tooth is provided on the side of each elastic clip facing the axis of the sliding rod, a plurality of positioning grooves for accommodating the guide teeth are provided on the plug-in portion, the nut is threadedly connected to the sliding rod, and a guide surface is provided on the inner wall of the nut, when the nut is screwed with the sliding rod, the guide surface pushes the elastic clip to bend toward the axis of the sliding rod to clamp the plug-in portion;

[0019] A cutting mark is arranged between each two adjacent brush rings, and the spacing between the two adjacent cutting marks is equal to the spacing between the two adjacent positioning grooves.

[0020] In summary, when the outer shell is being polished, negative pressure is generated at the negative pressure pipe, so that the burrs and debris scraped off enter the exhaust pipe, and the dust removal operation is completed while the outer shell is being polished in real time, thereby preventing dust from being retained in the work box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the structure of the hard disk casing polishing equipment;

[0023] Figure 2 for Figure 1 A schematic diagram of a hard disk casing polishing device from another perspective is shown;

[0024] Figure 3 Schematic diagram of the internal structure of the working box;

[0025] Figure 4 This is a schematic diagram of the coordination between the dust removal duct and the exhaust pipe;

[0026] Figure 5 A schematic diagram of the cooperation of two grinding modules when grinding the shell;

[0027] Figure 6 This is a schematic diagram of the state when the brush ring passes through the transition sleeve;

[0028] Figure 7 It is a schematic diagram of the steering of the main brush rod and the auxiliary brush rod in the grinding rod group;

[0029] Figure 8 Schematic diagram of the cooperation between the auxiliary brush rod and the telescopic rod;

[0030] Fig. 9 This is a schematic diagram of the coordination between the main brush rod and the housing;

[0031] Fig.10 A schematic diagram of the cooperation between the elastic clip and the plug-in portion when loosening the nut;

[0032] Fig.11 It is a schematic diagram of the matching state between the guide teeth and the positioning groove when the plug-in part is pulled out;

[0033] Fig.12It is a schematic diagram of the cooperation between the elastic clip and the plug-in part when the nut is locked;

[0034] Fig.13 for Figure 4 Magnified view at A. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] See also Figure 1 and Figure 2 The present invention provides a hard disk casing polishing device 10, including: a dust removal duct 100, a water tank 200 and a plurality of working boxes 300 arranged side by side.

[0039] See also Figure 4 and Figure 5 Each work box 300 is provided with a loading platform 310 and a grinding mechanism. The loading platform 310 is used to carry the shell to be processed, and the grinding mechanism is used to grind the shell 20; an exhaust pipe 320 is provided on the work box 300 at a position facing the loading platform 310, that is, the exhaust pipe 320 is aligned with the position in the work box 300 where grinding is performed.

[0040] See also Figure 2 and Figure 4The dust removal pipeline 100 includes a negative pressure pipe 110 and a plurality of three-way pipes 120. The negative pressure pipe 110 has an air inlet end 111 and an air outlet end 112. The three-way pipe 120 is provided with a first branch pipe 121, a second branch pipe 122 and a third branch pipe 123. The first branch pipe 121 is connected to the exhaust pipe 320, and the second branch pipe 122 is connected to the water tank 200 through the water receiving pipe 210. The end of the water receiving pipe 210 extends below the liquid level of the water tank 200. Figure 4 As shown, the water tank 200 is located below the three-way pipe 120, the third branch pipe 123 is connected to the negative pressure pipe 110, the third branch pipe 123 is located between the first branch pipe 121 and the second branch pipe 122, and a screen 130 (such as Fig.13 shown).

[0041] The negative pressure pipe 110 is connected to an external air pump (not shown). During the polishing process of the shell, the external air pump is started to blow air to one end of the negative pressure pipe 110 (the other end of the negative pressure pipe 110 exhausts air), and negative pressure is formed in the exhaust pipe 320, the water connecting pipe 210, the three-way pipe 120 and the negative pressure pipe 110. The dust generated by the polishing in the working box 300 reaches the three-way pipe 120 through the exhaust pipe 320, and the large particles in the dust are blocked by the screen 130. 210 falls into the water tank 200, and small and medium-sized dust particles enter the negative pressure pipe 110 and are discharged from the hard disk casing polishing device 10 through the exhaust port 112. Large dust particles are deposited in the water tank 200, and small dust particles are collected by a dust collecting bag (not shown) outside the device. Preferably, the exhaust port 112 faces the water tank 200, and small dust particles entering the negative pressure pipe 110 are also discharged into the water tank 200, so that the dust is adsorbed by the water in the water tank 200 to prevent the dust from floating, so as to facilitate cleaning.

[0042] In this embodiment, the working box 300 is provided with a door body 301 (such as Figure 1 The staff can rotate the door body 301 to open and close it. When the door body 301 is in an open state, the staff can take and put the shell. When the door body 301 (the door body 301 is provided with a vent hole) is in a closed state, the exhaust pipe 320 can more fully absorb the dust generated in the box.

[0043] In one embodiment, the grinding mechanism includes two grinding modules, which are respectively located at the upper and lower ends of the shell 20 to be processed (such as Figure 3 Each grinding module includes a rotation drive assembly 410 (as shown in Figure 3 As shown), telescopic drive assembly 420 (as Figure 3 As shown) and a plurality of grinding rod groups 430 (as shown Figure 5 See Figure 5Each grinding rod set 430 includes a main brush rod 431 and auxiliary brush rods 432 located on both sides of the main brush rod 431 , and a telescopic rod 440 is provided on the side of the main brush rod 431 and the auxiliary brush rod 432 away from the loading platform 310 .

[0044] See also Figure 3 and Figure 4 The rotation drive assembly 410 includes a motor 411 and a plurality of driven gears 412. The driven gears 412 are connected to the telescopic rod 440, and two adjacent driven gears 412 are meshed. When the motor 411 is started, the meshed driven gears 412 rotate and drive the telescopic rod 440 connected thereto to rotate, thereby causing the main brush rod 431 (or the auxiliary brush rod 432) on the telescopic rod 440 to rotate to polish the housing 20; see Figure 3 The telescopic driving assembly 420 includes a telescopic driving part 421 and a follower plate 422 . Each telescopic rod 440 is connected to the follower plate 422 . The telescopic driving part 421 is used to drive the telescopic rod 440 to move closer to or away from the loading platform 310 .

[0045] When the telescopic driving part 421 drives the telescopic rod 440 to approach the loading platform 310, the main brush rod 431 extends into the inner cavity of the housing 20 (such as Fig. 9 As shown), the auxiliary brush rod 432 contacts the outer wall of the housing 20 (as shown Figure 5 The motor 411 is started to drive the main brush rod 431 and the auxiliary brush rod 432 to rotate, the main brush rod 431 rotates to grind the inner wall of the housing 20, and the auxiliary brush rod 432 rotates to grind the outer wall of the housing 20.

[0046] Among them, the two grinding modules are respectively located at the upper and lower ends of the outer shell 20, and the main brush rods 431 on the two grinding modules extend into the inner cavity of the outer shell 20 from the upper and lower directions respectively, and contact the inner wall of the outer shell 20. The two main brush rods 431 serve as axial positioning components for the outer shell 20, that is, while the main brush rods 431 grind the inner wall of the outer shell 20, they also provide axial positioning for the outer shell 20. There is no need to set additional positioning components on the loading platform 310, which can simplify the clamping steps of the outer shell 20 and is beneficial to improving the grinding efficiency.

[0047] It should be noted that the rotation drive assembly 410 adopts gear transmission, and the rotation directions of adjacent driven gears 412 are opposite. Since the main brush rod 431 is located between the two auxiliary brush rods 432, that is, the rotation directions of the two auxiliary brush rods 432 are the same, and the auxiliary brush rod 432 rotates in the opposite direction to the main brush rod 431. Figure 7As shown in the figure (the main brush rod 431 is not shown), the rotation direction of the auxiliary brush rod 432 in the figure is clockwise, and it contacts the outer wall of the outer shell 20. During the grinding process, the direction of the force applied by the auxiliary brush rod 432 to the outer shell 20 is counterclockwise; the rotation direction of the main brush rod 431 is counterclockwise, and the main brush rod 431 contacts the inner wall of the outer shell 20. During the grinding process, the direction of the force applied by the auxiliary brush rod 432 to the outer shell 20 is also counterclockwise. That is, during the grinding operation on the outer shell 20, the main brush rod 431 and the auxiliary brush rod 432 will apply a force to drive the outer shell 20 to rotate counterclockwise, driving the outer shell 20 to rotate counterclockwise, and then transfer the ungrinded portion of the outer wall of the outer shell 20 into the grinding range of the auxiliary brush rod 432, and the outer wall of the outer shell 20 is evenly ground by the auxiliary brush rod 432. In this way, there is no need to set up additional rotating parts on the loading platform 310 to drive the outer shell 20 to rotate, and the outer wall of the outer shell 20 can be fully ground, further reducing the clamping parts of the outer shell 20, improving the clamping efficiency of the outer shell 20, and at the same time making the loading platform 310 simple, reducing obstructions, and making it easier to discharge dust and debris generated during the grinding process from the exhaust pipe 320.

[0048] The main brush rod 431 and the auxiliary brush rod 432 are both provided with a plug-in portion 41 and a grinding portion 42 (such as Figure 8 The plug-in portion 41 is used to connect with the telescopic rod 440; see Figure 8 The polishing part 42 is provided with a plurality of brush rings 42a, which are spaced apart along the axis of the polishing part 42, and each brush ring 42a includes a plurality of bristles. When the main brush rod 431 (or the auxiliary brush rod 432) rotates, the bristles on the brush ring 42a polish the housing 20.

[0049] Furthermore, there are intervals between each brush ring 42a, and the intervals between the brush rings 42a are blind spots on the grinding part 42. During the grinding operation of the outer shell 20, the telescopic driving part 421 can drive the follower plate 422 to rise and fall, and the telescopic rod 440 connected to the follower plate 422 extends and retracts accordingly, thereby driving the main brush rod 431 and the auxiliary brush rod 432 to move back and forth in the axial direction of the outer shell 20, that is, the brush ring 42a is displaced in the axial direction of the outer shell 20 while rotating, thereby increasing the grinding range of the brush ring 42a to make up for the gap between adjacent brush rings 42a, and when grinding the outer shell 20 whose length is greater than the grinding part 42, the follower plate 422 is driven by the telescopic driving part 421, driving the main brush rod 431 and the auxiliary brush rod 432 to synchronously displace axially along the outer shell 20, so that the grinding part 42 moves to the area that the brush ring 42a cannot cover to perform all-round grinding of the outer shell 20, thereby avoiding burrs from remaining and further improving the quality of grinding and polishing.

[0050] See also Fig. 9In actual production, the outer wall of the hard disk housing 20 has a larger amount of burrs than its inner wall, and the outer wall of the hard disk housing 20 directly contacts the user's hand, which requires a higher grinding quality. In order to improve the grinding effect of the outer wall of the housing 20. The main brush rod 431 is also provided with an eccentric portion 43, which is located between the plug-in portion 41 and the grinding portion 42. The angle between the axis of the eccentric portion 43 and the axis of the plug-in portion 41 is 45°. The eccentric portion 43 is arranged between the plug-in portion 41 and the grinding portion 42, so that the plug-in portion 41 and the grinding portion 42 are staggered. Therefore, when the main brush rod 431 rotates, the grinding portion 42 revolves around the plug-in portion 41. Since the grinding portion 42 extends into the interior of the housing 20 when the main brush rod 431 is working, the housing 20 also revolves around the plug-in portion 41. In this way, the distance between the housing 20 and the auxiliary brush rod 432 increases or decreases with its revolution. Specifically, when the distance between the housing 20 and the auxiliary brush rod 432 decreases, the compression amount of the bristles on the auxiliary brush rod 432 increases (e.g. Figure 7 As shown), the friction force on the outer shell 20 is also increased, thereby increasing the force of the bristles on the auxiliary brush rod 432 on the outer shell 20, and the outer shell 20 is rotated in an eccentric manner, so that the dust and debris generated during the grinding process can be thrown away from the outer shell 20, thereby improving the grinding effect.

[0051] In one embodiment, please refer to Figure 5 The loading platform 310 includes two baffles 311 and a plurality of support rings 312. The two baffles 311 are arranged at intervals. A transition sleeve 311a is arranged on each baffle 311. The support ring 312 is arranged on the end of the transition sleeve 311a away from the grinding rod group 430. The shell 20 to be processed is placed on the support ring 312. The inner diameter of the transition sleeve 311a increases from the center to both ends (such as Figure 6 shown).

[0052] The grinding operation of the hard disk housing 20 by the hard disk housing grinding device 10 is specifically as follows:

[0053] A housing 20 is placed on each support ring 312. At this time, the housing 20 is located between the upper and lower main brush rods 431, and the door body 301 is closed. The housing 20 is clamped.

[0054] The telescopic driving part 421 is started, and the sliding rod 442 is pulled out through the follower plate 422, so that the main brush rod 431 penetrates into the housing 20, and the brush ring 42a on the main brush rod 431 contacts the inner cavity of the housing 20 (such as Fig. 9 As shown), at the same time, the brush ring 42a on the auxiliary brush rod 432 contacts the outer wall of the housing 20 (as shown Figure 5 As shown), the grinding preparation stage is completed;

[0055] The motor 411 is started, and the driven gear 412 drives each telescopic rod 440 to rotate, and the main brush rod 431 and the auxiliary brush rod 432 rotate accordingly, and the bristles thereon begin to polish the inner cavity and outer wall of the housing 20. At the same time as the main brush rod 431 and the auxiliary brush rod 432 move, the telescopic drive unit 421 drives the follower plate 422 to rise and fall, so that the main brush rod 431 and the auxiliary brush rod 432 move back and forth along the axis direction of the housing 20.

[0056] The external air pump is started, and negative pressure is formed in the exhaust pipe 320 , the water pipe 210 , the three-way pipe 120 and the negative pressure pipe 110 . The dust generated during the grinding process of the main brush rod 431 and the auxiliary brush rod 432 is sucked into the exhaust pipe 320 and discharged through the negative pressure pipe 110 .

[0057] When the grinding of the outer shell 20 is completed, the motor 411 is turned off, the telescopic drive unit 421 pulls each sliding rod 442 to reset, the main brush rod 431 and the auxiliary brush rod 432 are separated from the outer shell 20, and the external air pump is stopped. The operator opens the door 301, takes out the outer shell 20, and places the next batch of outer shells 20 to be processed back on the support ring 312 to prepare for the next round of grinding operation.

[0058] When performing the grinding operation, the grinding part 42 passes through the transition sleeve 311a and extends into between the two baffles 311 to contact the outer shell 20. After completing the grinding operation, the grinding part 42 passes through the transition sleeve 311a again. To ensure that the outer shell 20 is ground, the diameter of the brush ring 42a must be larger than the inner diameter of the outer shell 20, and the length of the bristles must be larger than the distance between the outer wall of the outer shell 20 and the adjacent auxiliary brush rod 432. In this way, the diameter of the brush ring 42a will be larger than the inner diameter of the transition sleeve 311a. The grinding part 42 repeatedly passes through the transition sleeve 311a in the axial direction, which can easily cause the bristles to break, thereby shortening the service life of the main brush rod 431 (or auxiliary brush rod 432).

[0059] To solve the above problems, please refer to Figure 6 The inner diameter of the transition sleeve 311a increases from the center to both ends, that is, the inner cavity of the transition sleeve 311a is in the shape of an "hourglass" which is narrow in the middle and wide on both sides. When the grinding portion 42 passes through the transition sleeve 311a, the bristles on the brush ring 42a contact the inner wall of the transition sleeve 311a and begin to bend under the inner wall of the transition sleeve 311a. The closer the brush ring 42a is to the center position of the transition sleeve 311a, the greater the bending amplitude of the bristles. After the brush ring 42a passes the center position of the transition sleeve 311a, as the inner diameter of the transition sleeve 311a increases, the bristles begin to stretch, and the inner cavity of the transition sleeve 311a is set to the above-mentioned "hourglass" shape, which provides a buffer zone for the bending of the bristles, avoids instantaneous bending of the bristles, reduces the impact force acting on the bristles, and thereby increases the service life of the brush ring 42a.

[0060] In one embodiment, see Figure 8The telescopic rod 440 includes a bearing tube 441, a sliding rod 442 and a nut 443. The bearing tube 441 is connected to the driven gear 412. A sliding groove 441a is provided on the inner wall of the bearing tube 441. The sliding rod 442 passes through the bearing tube 441, and a spline 442a matching the sliding groove 441a is provided on the outer wall of the sliding rod 442. The spline 442a and the sliding groove 441a on the outer wall of the sliding rod 442 are used to ensure that the bearing tube 441 and the sliding rod 442 can rotate synchronously, and provide guidance for the sliding rod 442 to extend and retract along the axial direction of the bearing tube 441.

[0061] See also Figure 8 and Fig.10 , a plurality of elastic clips 444 are provided at the end of the sliding rod 442, and a guide tooth 444a is provided on each elastic clip 444 on the side facing the axis of the sliding rod 442, and a plurality of positioning grooves 41a for accommodating the guide teeth 444a are provided on the plug-in portion 41, and the nut 443 is threadedly connected with the sliding rod 442, and a guide surface 443a is provided on the inner wall of the nut 443, and when the nut 443 is threadedly engaged with the sliding rod 442, the guide surface 443a pushes the elastic clip 444 to bend toward the axis of the sliding rod 442 to clamp the plug-in portion 41;

[0062] For details, please refer to Fig.12 When tightening the nut 443, the guide surface 443a on the inner wall of the nut 443 applies pressure to the elastic clips 444, causing each elastic clip 444 to bend toward the center of the sliding rod 442, and the distance between each elastic clip 444 becomes smaller to clamp the plug-in portion 41 located at the center of the sliding rod 442.

[0063] See also Fig.10 and Fig.11 When the nut 443 is loosened, each elastic clip 444 straightens under its own elastic action and no longer presses the plug-in portion 41, but the guide teeth 444a on the elastic clip 444 are still located in the positioning groove 41a of the plug-in portion 41, and the end of the guide teeth 444a contacts the groove wall of the positioning groove 41a to support the plug-in portion 41 to prevent the main brush rod 431 (or the auxiliary brush rod 432) from being displaced (such as Fig.10 In this state, an axial pulling force is applied to the main brush rod 431 (or the auxiliary brush rod 432), and the pulling force is transmitted to the guide tooth 444a through the positioning groove 41a. When the radial component of the pulling force acting on the guide tooth 444a is greater than the elastic force of the elastic clip 444, the elastic clip 444 bends in the reverse direction, and the guide tooth 444a is separated from the positioning groove 41a (as shown in FIG. Fig.11As shown in the figure, the main brush rod 431 (or the auxiliary brush rod 432) can be pulled up until the next positioning groove 41a on the plug-in portion 41 moves to the end of the sliding rod 442, and the elastic clip 444 is reset under the action of its own elastic force, and the guide tooth 444a is stuck in the positioning groove 41a, and the main brush rod 431 (or the auxiliary brush rod 432) is stuck again. In this way, after the nut 443 is removed, the main brush rod 431 (or the auxiliary brush rod 432) will not directly slide axially, and the guide tooth 444a cooperates with the positioning groove 41a on the plug-in portion 41 to provide positioning for the main brush rod 431 (or the auxiliary brush rod 432), so as to facilitate the adjustment of the installation height of the main brush rod 431 (or the auxiliary brush rod 432).

[0064] Furthermore, the bristles on the brush ring 42a are components that are in direct contact with the outer shell 20 for performing grinding operations and are vulnerable components. However, the degree of wear of the brush rings 42a of the same grinding section 42 is inconsistent. Specifically, there are multiple brush rings 42a on the grinding section 42, and the brush rings 42a are spaced apart along the extension direction of the grinding section 42. After the bristles on the brush ring 42a are worn, the contact area with the outer shell 20 is reduced or even cannot be in contact. At this time, the brush ring 42a no longer has the grinding ability, but other brush rings 42a on the same grinding section 42 still have the grinding ability. At this time, if the entire main brush rod 431 (or auxiliary brush rod 432) is replaced, it will be a waste. If the main brush rod 431 (or auxiliary brush rod 432) is not replaced, the failed brush ring 42a occupies the grinding space, and the grinding effect at its location is reduced.

[0065] In order to solve the above problem, a cutting mark is provided between every two adjacent brush rings 42a, and the distance between the two adjacent cutting marks is equal to the distance between the two adjacent positioning grooves 41a.

[0066] When the bristles on the brush ring 42a are worn and the grinding operation cannot be performed normally, the grinding part 42 can be cut with cutting tools such as scissors and utility knives. The cutting position is the position marked by the cutting mark, specifically, the cutting mark between the worn brush ring 42a and the unworn brush ring 42a (close to the side of the grinding part 42). After cutting off the worn brush ring 42a, loosen the nut 443, apply pulling force to pull it up, adjust the grinding part 42 to be flush with the grinding part 42 on the adjacent main brush rod 431 (or auxiliary brush rod 432), and retighten the nut 443 to fix the plug-in part 41.

[0067] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A hard disk casing polishing device, characterized in that: include: A dust removal duct, a water trough and several work boxes arranged side by side; each of the work boxes is provided with a loading platform and a grinding mechanism, the loading platform is used to carry the shell to be processed, and the grinding mechanism is used to grind the shell; an exhaust pipe is provided on the work box at a position facing the loading platform; the dust removal duct includes a negative pressure pipe and a plurality of three-way pipes; the negative pressure pipe has an air inlet end and an air outlet end, the three-way pipe is provided with a first branch pipe, a second branch pipe and a third branch pipe, the first branch pipe is connected to the exhaust pipe, the second branch pipe is connected to the water trough through a water suction pipe, the third branch pipe is connected to the negative pressure pipe, the third branch pipe is located between the first branch pipe and the second branch pipe, and a screen is provided in the third branch pipe; the hard disk shell grinding equipment also includes an external air pump connected to the negative pressure pipe; The grinding mechanism includes two grinding modules, which are respectively located at the upper and lower ends of the shell to be processed, each of which includes a rotation drive assembly, a telescopic drive assembly and a plurality of grinding rod groups, each of which includes a main brush rod and auxiliary brush rods located on both sides of the main brush rod, and telescopic rods are provided on the main brush rod and the auxiliary brush rod on a side away from the loading platform, the rotation drive assembly includes a motor and a plurality of driven gears, the driven gears are connected to the telescopic rods, and two adjacent driven gears are meshed, the motor is used to drive the telescopic rods to rotate, the telescopic drive assembly includes a telescopic drive part and a follower plate, each of the telescopic rods is connected to the follower plate, and the telescopic drive part is used to drive the telescopic rods to approach or move away from the loading platform; The main brush rod and the auxiliary brush rod are both provided with a plug-in portion and a grinding portion, the plug-in portion is connected to the telescopic rod, and the grinding portion is provided with a plurality of brush rings, the plurality of brush rings are spaced apart along the axis direction of the grinding portion, and each of the brush rings includes a plurality of bristles; The main brush rod is also provided with an eccentric portion, the eccentric portion is located between the plug-in portion and the polishing portion, and the angle between the axis of the eccentric portion and the axis of the plug-in portion is 45°; The main brush rods on the two grinding modules extend into the inner cavity of the shell from the upper and lower directions respectively, and contact the inner wall of the shell. The two main brush rods serve as circumferential positioning components for the shell. The telescopic driving part is started, and the sliding rod is extended through the follower plate, so that the main brush rod penetrates into the shell, the brush ring on the main brush rod contacts the inner cavity of the shell, and the brush ring on the auxiliary brush rod contacts the outer wall of the shell.

2. The hard disk casing polishing device according to claim 1, characterized in that: The working box is provided with a door body.

3. The hard disk casing polishing device according to claim 1, characterized in that: The loading platform includes two baffles and a plurality of support rings. The two baffles are spaced apart. A transition sleeve is provided on each baffle. The support ring is provided on one end of the transition sleeve away from the grinding rod group. The support ring is used to place the shell to be processed.

4. The hard disk casing polishing device according to claim 3, characterized in that: The inner diameter of the transition sleeve increases gradually from the center to both ends.

5. The hard disk casing polishing device according to claim 1, characterized in that: The telescopic rod comprises a bearing tube, a sliding rod and a nut, the bearing tube is connected to the driven gear, a sliding groove is provided on the inner wall of the bearing tube, the sliding rod passes through the bearing tube, and a spline matching the sliding groove is provided on the outer wall of the sliding rod, a plurality of elastic clips are provided on the end of the sliding rod, a guide tooth is provided on the side of each elastic clip facing the axis of the sliding rod, a plurality of positioning grooves for accommodating the guide teeth are provided on the plug-in portion, the nut is threadedly connected to the sliding rod, and a guiding surface is provided on the inner wall of the nut, and when the nut is screwed with the sliding rod, the guiding surface pushes the elastic clip to bend toward the axis of the sliding rod to clamp the plug-in portion; A cutting mark is arranged between each two adjacent brush rings, and the spacing between the two adjacent cutting marks is equal to the spacing between the two adjacent positioning grooves.

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