Lacquer base surface polishing device

Abstract

The utility model discloses a lacquerware base surface polishing device which comprises a base, the top of the base is fixedly connected with a partition plate, the bottom of the partition plate is fixedly connected with a first motor, and the driving end of the first motor penetrates through the partition plate and is fixedly connected with a polishing wheel; the first inner supporting assembly is arranged on the top of the base and can conduct inner supporting on lacquerware. The second inner supporting assembly is arranged at the bottom of the first inner supporting assembly and matched with the first inner supporting assembly, and double inner supporting can be achieved; and the lifting assembly is arranged at the top of the base and can drive the lacquerware to ascend and descend. According to the polishing device, by arranging the first inner supporting assembly and the second inner supporting assembly, double supporting of the inner top and the inner bottom of the lacquerware can be achieved, damage to paint caused by external clamping can be avoided, stable supporting can be achieved, and falling caused by continuous vibration in the polishing process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lacquerware manufacturing technical field, concretely is a lacquerware base surface polishing device. BACKGROUND

[0002] Lacquerware surface polishing is mainly to enhance its glossiness, improve overall aesthetic property, and can protect the paint layer from wear and tear to a certain extent. In the polishing process, through fine grinding and wiping, remove the surface of the small defects and unevenness, make the paint surface more smooth and delicate. This not only can make lacquerware present charming luster, but also can increase its durability, prolong service life. Therefore, polishing is an indispensable link in lacquerware production, and has an important influence on the quality and appearance of lacquerware.

[0003] In the prior art, when the base of lacquerware is polished, the lacquerware needs to be fixed by a clamp, and generally, the lacquerware is clamped and fixed outside, but this fixing method is easy to damage the outer surface of the lacquerware, and then the inner support method can be adopted for clamping and fixing, but the inner support method is easy to fall off under the influence of vibration generated by long-time polishing, causing unnecessary damage, therefore, a lacquerware base surface polishing device is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a lacquerware base surface polishing device to solve the problems in the above background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A lacquerware base surface polishing device comprises:

[0007] A base is fixedly connected with a partition plate at the top, the bottom of the partition plate is fixedly connected with a first motor, and the driving end of the first motor penetrates through the partition plate and is fixedly connected with a polishing wheel;

[0008] A first inner support assembly is arranged at the top of the base and can support the lacquerware from inside;

[0009] A second inner support assembly is arranged at the bottom of the first inner support assembly and cooperates with the first inner support assembly to provide double inner support;

[0010] A lifting assembly is arranged at the top of the base and can lift the lacquerware.

[0011] Preferably, the first inner support assembly and the second inner support assembly each comprise:

[0012] A top cover is arranged at the top of the base and is provided with a hole.

[0013] A circular box is fixedly connected to the bottom of the top cover, a plurality of limiting rings are fixedly connected to the top edge of the circular box, and the bottom of the circular box is provided with an opening;

[0014] A rotating disc is rotationally connected in the circular box, a plurality of arc-shaped grooves are provided through the rotating disc, and the rotating disc is provided with an opening at the middle position;

[0015] A plurality of shafts are respectively and slidably arranged in the plurality of arc-shaped grooves, and a plurality of push rods are fixedly connected to the outer sides of the plurality of shafts;

[0016] A plurality of frame plates are respectively and fixedly connected to the outer ends of the plurality of push rods, a plurality of buffer rods are fixedly connected to the outer ends of the plurality of frame plates, three supporting blocks are respectively and fixedly connected to the telescopic ends of the plurality of buffer rods, and the outer sides of the three supporting blocks are arranged in an arc shape;

[0017] A rotating shaft is arranged at the top of the top cover, and a rotating wheel is fixedly connected to the top end of the rotating shaft;

[0018] A first sprocket is fixedly sleeved outside the rotating shaft, a chain is sleeved and engaged outside the first sprocket, and a second sprocket is sleeved and engaged at one end of the chain;

[0019] A ratchet wheel is arranged at the bottom of the first sprocket, the ratchet wheel is fixedly sleeved outside the rotating shaft, a pawl is arranged outside the ratchet wheel, a torsional spring is fixedly sleeved at the bottom rotating end of the pawl, and a handle is movably inserted into the pawl;

[0020] An insertion pipe is arranged at the top of the top cover, and the insertion pipe is insertable with the bottom end of the handle.

[0021] Preferably, the plurality of limiting rings, arc-shaped grooves, shafts, push rods, frame plates, buffer rods, and supporting blocks are arranged in multiple groups, and the multiple groups are arranged around the central axis of the rotating disc.

[0022] Preferably, a plurality of supporting rods are fixedly connected to the top of the top cover in the first inner support assembly, and a supporting plate is fixedly connected to the top of the plurality of supporting rods.

[0023] Preferably, a backing plate is fixedly connected to the top of the first top cover of the first inner support assembly, the rotating shaft, the rotating wheel, the first sprocket, the chain, the second sprocket, the ratchet wheel, the pawl, the torsional spring, the handle, and the insertion pipe in the second inner support assembly are arranged at the top of the backing plate, the rotating shaft in the second inner support assembly is rotationally connected to the top of the backing plate, the insertion pipe in the second inner support assembly is fixedly inserted into the top of the backing plate, the rotating shaft in the first inner support assembly is rotationally connected to the top of the top cover, and the insertion pipe in the first inner support assembly is fixedly inserted into the top of the top cover.

[0024] Preferably, a cylinder is fixedly connected to the top of the top cover inside the first inner support assembly, and the cylinder is fixedly sleeved with the second sprocket inside the first inner support assembly.

[0025] Preferably, a first telescopic rod is fixedly connected to the top of the top cover inside the second inner support assembly. The top end of the first telescopic rod passes through the round box, turntable, and cylinder inside the first inner support assembly, and the top end of the first telescopic rod is fixedly sleeved with the second sprocket inside the second inner support assembly.

[0026] Preferably, a plurality of second telescopic rods are fixedly connected between the first inner support assembly and the second inner support assembly.

[0027] Preferably, the lifting assembly includes:

[0028] The two support columns are fixedly connected to the top of the base, and each of the two support columns has a groove inside.

[0029] The second motor, both of which are fixedly connected to the top of the support column, and the drive ends of both first motors extend into the groove and are fixedly connected to lead screws;

[0030] The two lifting blocks are slidably disposed in the groove, both lifting blocks are threadedly engaged with the lead screw, and both lifting blocks are fixedly connected to both ends of the support plate.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] 1. By setting up a first inner support assembly and a second inner support assembly, the lacquerware is fitted over the first and second inner support assemblies. Then, the rotating wheel of the first inner support assembly is rotated, which drives the rotating shaft to rotate. The rotating shaft drives the first sprocket to rotate, which in turn drives the chain and the second sprocket to rotate in conjunction. The second sprocket drives the cylinder to rotate, which in turn drives the turntable inside the first inner support assembly to rotate. The rotation of the turntable will drive multiple arc-shaped grooves to rotate synchronously, which in turn drives multiple shafts to expand outward in a straight line. This, in turn, drives multiple push rods, multiple frame plates, buffer rods, and support blocks to expand outward, supporting and fixing the inner top position of the lacquerware. Similarly, the second inner support assembly is driven to provide inner support for the inner bottom of the lacquerware. In this way, the lacquerware is supported by both the inner top and the inner bottom. This can not only avoid damage to the lacquerware caused by external clamping, but also provide stable support and prevent the lacquerware from falling off due to continuous vibration during the polishing process.

[0033] 2. By setting the lifting assembly and the polishing wheel, starting two second motors, the two second motors synchronously drive the two lead screws to rotate, thereby driving the two lifting blocks to synchronously lift, thereby driving the support plate, the plurality of support rods and the first inner support assembly and the second inner support assembly to lift as a whole, that is, driving the fixed lacquerware to lift, and driving the bottom of the lacquerware to contact the polishing wheel to polish, and the lifting can be suitable for lacquerware of different sizes. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the overall structure schematic diagram of the utility model;

[0035] Figure 2 is the partial structure schematic diagram of the utility model Figure 1 ;

[0036] Figure 3 is the structure schematic diagram of the first inner support assembly and the second inner support assembly in the utility model;

[0037] Figure 4 is the structure schematic diagram of the push rod, the frame plate, the buffer rod and the support block in the utility model;

[0038] Figure 5 is the structure schematic diagram of the rotating wheel, the rotating shaft, the first chain wheel, the chain, the second chain wheel and the ratchet wheel in the utility model;

[0039] Figure 6 is the A place close-up of the utility model Figure 5 ;

[0040] In the drawing: 100, base; 110, partition; 120, first motor; 130, polishing wheel; 2A, first inner support assembly; 2B, second inner support assembly; 300, lifting assembly; 210, top cover; 220, round box; 221, limiting ring; 230, rotating disc; 231, arc-shaped groove; 240, shaft body; 241, push rod; 250, frame plate; 251, buffer rod; 252, support block; 260, rotating shaft; 261, rotating wheel; 270, first chain wheel; 271, chain; 272, second chain wheel; 280, ratchet wheel; 281, pawl; 282, torsion spring; 283, handle; 290, plug-in pipe; 310, support column; 311, recess; 320, second motor; 321, lead screw; 330, lifting block; 400, support rod; 500, support plate; 600, pad plate; 700, cylinder; 800, first telescopic rod; 900, second telescopic rod. DETAILED DESCRIPTION

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Example 1

[0043] like Figures 1-6 As shown, in this embodiment, a lacquerware substrate surface polishing device includes: a base 100, a first inner support component 2A, a second inner support component 2B, and a lifting component 300. A partition 110 is fixedly connected to the top of the base 100, and a first motor 120 is fixedly connected to the bottom of the partition 110. The drive end of the first motor 120 passes through the partition 110 and is fixedly connected to a polishing wheel 130. When the first motor 120 is started, the first motor 120 drives the polishing wheel 130 to rotate, which can polish the bottom of the lacquerware.

[0044] Both the first inner support assembly 2A and the second inner support assembly 2B include: a top cover 210, a circular box 220, a turntable 230, a shaft 240, a frame plate 250, a rotating shaft 260, a first sprocket 270, a ratchet 280, and a connector 290. The top cover 210 is located on top of the base 100 and has an opening. The circular box 220 is fixedly connected to the bottom of the top cover 210, and multiple limiting rings 221 are fixedly connected to the top edge of the circular box 220. The bottom of the circular box 220 has an opening. The turntable 230 is rotatably connected inside the circular box 220, and multiple arc-shaped grooves 231 are formed through the turntable 230. An opening is provided in the middle position; multiple shafts 240 are slidably disposed in multiple arc-shaped grooves 231, and push rods 241 are fixedly connected to the outside of each shaft 240; multiple frame plates 250 are fixedly connected to the outer ends of the multiple push rods 241, and buffer rods 251 are fixedly connected to the outer ends of the multiple frame plates 250; three support blocks 252 are fixedly connected to the telescopic ends of the multiple buffer rods 251, and the outer sides of the three support blocks 252 are arc-shaped; it should be noted that the buffer rods 251 are provided with springs and damping structures, which can buffer while avoiding repeated rebound. The buffer rods 251 are existing technology and will not be described in detail.

[0045] The position of the rotating shaft 260 is arranged at the top of the top cover 210, and the top end of the rotating shaft 260 is fixedly connected with a rotating wheel 261; the first sprocket 270 is fixedly sleeved outside the rotating shaft 260, the first sprocket 270 is externally meshed with a chain 271, one end of the chain 271 is meshed with a second sprocket 272; the position of the ratchet wheel 280 is arranged at the bottom of the first sprocket 270, the ratchet wheel 280 is fixedly sleeved outside the rotating shaft 260, the ratchet wheel 280 is externally provided with a pawl 281, the bottom rotating end of the pawl 281 is fixedly sleeved with a torsion spring 282, and the pawl 281 is movably inserted with a handle 283; the position of the insertion pipe 290 is arranged at the top of the top cover 210, and the insertion pipe 290 can be inserted with the bottom end of the handle 283; it should be noted that the first sprocket 270, the second sprocket 272 and the chain 271 are meshed with each other to ensure the transmission efficiency, and the transmission wrap angle size is within the drivable range to ensure the transmission.

[0046] In this embodiment, in the process of rotating the first sprocket 270, the ratchet wheel 280 is synchronously driven to rotate, and the ratchet wheel 280 is in turn driven to be connected with the pawl 281, so that the shaft body 240, the push rod 241, the frame plate 250, the buffer rod 251 and the support block 252 are expanded outwardly, and the process of being driven to be locked is avoided, so as to avoid the falling caused by the inward recovery, when the lacquerware needs to be separated, the handle 283 is pinched to drive the pawl 281 to be separated, and then the handle 283 is inserted into the insertion pipe 290, so that the pawl 281 is fixed, and the lacquerware can be separated at this time.

[0047] Specifically, the lacquerware is sleeved outside the first inner support assembly 2A and the second inner support assembly 2B, and then the rotating wheel 261 of the first inner support assembly 2A is rotated to drive the rotating shaft 260 to rotate, the rotating shaft 260 drives the first sprocket 270 to rotate, the first sprocket 270 drives the chain 271 and the second sprocket 272 to be linked, the second sprocket 272 drives the cylinder 700 to rotate, that is, drives the rotating disc 230 in the first inner support assembly 2A to rotate, the rotating disc 230 rotates to drive the plurality of arc-shaped grooves 231 to rotate synchronously, and then drives the plurality of shaft bodies 240 to expand outwardly in a straight line as a whole, and then drives the plurality of push rods 241 and the plurality of frame plates 250, buffer rods 251 and support blocks 252 to expand outwardly, so as to support and fix the inner top position of the lacquerware, and the second inner support assembly 2B drives the inner bottom of the lacquerware to be supported, so that double inner support can be realized.

[0048] In the embodiment, the first top cover 210 of the first inner support assembly 2A is fixedly connected with a pad plate 600, the rotating shaft 260, the rotating wheel 261, the first sprocket 270, the chain 271, the second sprocket 272, the ratchet wheel 280, the ratchet pawl 281, the torsion spring 282, the rotating handle 283 and the plug-in pipe 290 in the second inner support assembly 2B are arranged on the top of the pad plate 600, the rotating shaft 260 in the second inner support assembly 2B is rotatably connected on the top of the pad plate 600, the plug-in pipe 290 in the second inner support assembly 2B is fixedly plugged on the top of the pad plate 600, the rotating shaft 260 in the first inner support assembly 2A is rotatably connected on the top of the top cover 210, the plug-in pipe 290 in the first inner support assembly 2A is fixedly plugged on the top of the top cover 210; the top of the top cover 210 in the first inner support assembly 2A is fixedly connected with a cylinder 700, the cylinder 700 is fixedly sleeved with the second sprocket 272 in the first inner support assembly 2A; the top of the top cover 210 in the second inner support assembly 2B is fixedly connected with a first telescopic rod 800, the top end of the first telescopic rod 800 penetrates through the round box 220, the rotating disc 230 and the cylinder 700 in the first inner support assembly 2A, and the top end of the first telescopic rod 800 is fixedly sleeved with the second sprocket 272 in the second inner support assembly 2B.

[0049] Further, a plurality of second telescopic rods 900 are fixedly connected between the first inner support assembly 2A and the second inner support assembly 2B, the top ends of the plurality of second telescopic rods 900 are fixedly connected on the bottom of the round box 220 in the first inner support assembly 2A, and the bottom ends are fixedly connected on the top of the top cover 210 in the second inner support assembly 2B, the first telescopic rod 800 and the second telescopic rod 900 are both threaded with fixed bolts, the distance between the first inner support assembly 2A and the second inner support assembly 2B can be adjusted to adapt to lacquerware of different sizes.

[0050] In addition, it should be noted that the sizes of the top cover 210, the circular box 220, the limiting ring 221, the rotating disc 230, the arc-shaped groove 231, the shaft body 240, the push rod 241, the frame plate 250, the buffer rod 251 and the support block 252 in the first inner support assembly 2A are greater than the sizes of the top cover 210, the circular box 220, the limiting ring 221, the rotating disc 230, the arc-shaped groove 231, the shaft body 240, the push rod 241, the frame plate 250, the buffer rod 251 and the support block 252 in the second inner support assembly 2B, the sizes of the rotating shaft 260, the rotating wheel 261, the first sprocket 270, the chain 271, the second sprocket 272, the ratchet wheel 280, the ratchet pawl 281, the torsional spring 282, the handle 283 and the plug-in pipe 290 in the first inner support assembly 2A are the same as the sizes of the rotating shaft 260, the rotating wheel 261, the first sprocket 270, the chain 271, the second sprocket 272, the ratchet wheel 280, the ratchet pawl 281, the torsional spring 282, the handle 283 and the plug-in pipe 290 in the first inner support assembly 2A, and the sizes of part of the structure of the second inner support assembly 2B are greater than the sizes of part of the structure of the first inner support assembly 2A, which can be suitable for lacquerware with small mouths and large bodies.

[0051] Embodiment Two

[0052] On the basis of embodiment one, in order to drive the lacquerware to ascend and descend for polishing, an ascending and descending assembly 300 is arranged.

[0053] As shown in Figure 1 In this embodiment, the ascending and descending assembly 300 comprises two support columns 310, two second motors 320 and two ascending and descending blocks 330, the two support columns 310 are fixedly connected to the top of the base 100, the two support columns 310 are both provided with grooves 311, the two second motors 320 are fixedly connected to the top of the support column 310, and the driving ends of the two first motors 120 extend into the grooves 311 and are fixedly connected with lead screws 321; the two ascending and descending blocks 330 are slidingly arranged in the grooves 311, the two ascending and descending blocks 330 are threadedly matched with the lead screws 321, and the two ascending and descending blocks 330 are fixedly connected with the two ends of the support plate 500.

[0054] In specific implementation, the two second motors 320 are started, the two second motors 320 synchronously drive the two lead screws 321 to rotate, thereby synchronously driving the two ascending and descending blocks 330 to ascend and descend, and thereby driving the support plate 500, the plurality of support rods 400 and the first inner support assembly 2A and the second inner support assembly 2B to ascend and descend as a whole, that is, driving the fixed lacquerware to ascend and descend, and driving the bottom of the lacquerware to descend to contact the polishing wheel 130 for polishing.

[0055] Working principle: first, the lacquer set in the first inner support assembly 2A and the second inner support assembly 2B outside, then rotate the first inner support assembly 2A rotating wheel 261, drive rotating shaft 260 rotation, rotating shaft 260 drive first sprocket 270 rotation, first sprocket 270 drive chain 271 and second sprocket 272 linkage, second sprocket 272 drive cylinder 700 rotation, that is, drive rotating disc 230 in the first inner support assembly 2A rotation, rotating disc 230 rotation will drive multiple arc slot 231 synchronous rotation, in turn drive multiple shaft body 240 straight line expansion as a whole, in turn drive multiple push rod 241 and multiple frame plate 250, buffer rod 251 and support block 252 expansion, the inner top position of the lacquer support fixed, as above, rotating the second inner support assembly 2B rotating wheel 261, drive rotating shaft 260 rotation, rotating shaft 260 drive first sprocket 270 rotation, first sprocket 270 drive chain 271 and second sprocket 272 linkage, second sprocket 272 drive first telescopic rod 800 rotation, that is, drive rotating disc 230 in the second inner support assembly 2B rotation, rotating disc 230 rotation will drive multiple arc slot 231 synchronous rotation, in turn drive multiple shaft body 240 straight line expansion as a whole, in turn drive multiple push rod 241 and multiple frame plate 250, buffer rod 251 and support block 252 expansion, the inner bottom position of the lacquer support fixed, in this way, the inner top and inner bottom of the lacquer double support, both can avoid the damage of external clamping to the paint, but also can be stable support, avoid the continuous vibration during polishing and lead to fall off.

[0056] It is obvious to a person skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0057] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A polishing device for lacquerware substrate surface, characterized in that, The utility model relates to a lacquerware polishing device, including: The base (100) top fixedly connected with the baffle (110), the baffle (110) bottom fixedly connected with the first motor (120), the first motor (120) drive end penetrates baffle (110) and fixedly connected with the polishing wheel (130); First inner support assembly (2A), first inner support assembly (2A) set in the base (100) top, can carry out inner support to lacquerware; Second inner support assembly (2B), second inner support assembly (2B) are set in the bottom of first inner support assembly (2A), cooperate with first inner support assembly (2A), can carry out double inner support; Lifting assembly (300), lifting assembly (300) set in the top of base (100), can drive lacquerware to lift.

2. The apparatus of claim 1, wherein, The first inner support assembly (2A) and second inner support assembly (2B) all include: Top cover (210), top cover (210) is set in the top of base (100), and top cover (210) is provided with a hole; Round box (220), round box (220) is fixedly connected in the bottom of top cover (210), and the top edge of round box (220) is fixedly connected with a plurality of limiting rings (221), and the bottom of round box (220) is provided with a hole; Rotating disc (230), rotating disc (230) is rotatably connected in round box (220), a plurality of arc-shaped grooves (231) are formed in rotating disc (230), and rotating disc (230) is provided with a hole in the middle position; Shaft body (240), a plurality of shaft bodies (240) are slidably arranged in a plurality of arc-shaped grooves (231), and a plurality of push rods (241) are fixedly connected outside a plurality of shaft bodies (240); Frame plate (250), a plurality of frame plates (250) are fixedly connected with the outer ends of a plurality of push rods (241), a plurality of buffer rods (251) are fixedly connected with the outer ends of a plurality of frame plates (250), and three supporting blocks (252) are fixedly connected with the telescopic ends of a plurality of buffer rods (251), and the outer sides of three supporting blocks (252) are arranged in an arc shape; Rotating shaft (260), rotating shaft (260) is arranged at the top of top cover (210), and rotating wheel (261) is fixedly connected with the top end of rotating shaft (260); First sprocket (270), first sprocket (270) is fixedly sleeved outside rotating shaft (260), chain (271) is engagedly sleeved outside first sprocket (270), and second sprocket (272) is engagedly sleeved at one end of chain (271); Ratchet wheel (280), ratchet wheel (280) is arranged at the bottom of first sprocket (270), ratchet wheel (280) is fixedly sleeved outside rotating shaft (260), ratchet pawl (281) is arranged outside ratchet wheel (280), torsional spring (282) is fixedly sleeved at the bottom rotating end of ratchet pawl (281), and handle (283) is movably inserted into ratchet pawl (281). A plug-in pipe (290) is arranged on the top of the top cover (210), and the plug-in pipe (290) is plugged with the bottom end of the rotating handle (283).

3. The apparatus of claim 2, wherein the polishing head is configured to polish the surface of the paintable substrate by rotating the polishing head about the axis of rotation. A plurality of limiting rings (221), arc-shaped grooves (231), shaft bodies (240), push rods (241), frame plates (250), buffer rods (251) and supporting blocks (252) are arranged in multiple groups, and the multiple groups are arranged around the central axis of the rotating disc (230).

4. The apparatus of claim 2, wherein the polishing pad is a flexible polishing pad. A plurality of supporting rods (400) are fixedly connected to the top of the top cover (210) in the first inner support assembly (2A), and a supporting plate (500) is fixedly connected to the top of the plurality of supporting rods (400).

5. The apparatus of claim 2, wherein the polishing pad is a flexible polishing pad. The top cover (210) of the first inner support assembly (2A) is fixedly connected with a pad plate (600), the rotating shaft (260), the rotating wheel (261), the first sprocket (270), the chain (271), the second sprocket (272), the ratchet wheel (280), the ratchet pawl (281), the torsional spring (282), the rotating handle (283) and the plug-in pipe (290) in the second inner support assembly (2B) are arranged on the top of the pad plate (600), the rotating shaft (260) in the second inner support assembly (2B) is rotatably connected to the top of the pad plate (600), the plug-in pipe (290) in the second inner support assembly (2B) is fixedly plugged on the top of the pad plate (600), the rotating shaft (260) in the first inner support assembly (2A) is rotatably connected to the top of the top cover (210), and the plug-in pipe (290) in the first inner support assembly (2A) is fixedly plugged on the top of the top cover (210).

6. The apparatus of claim 2, wherein the polishing pad is a flexible polishing pad. The top cover (210) of the first inner support assembly (2A) is fixedly connected with a cylindrical barrel (700), and the cylindrical barrel (700) is fixedly sleeved with the second sprocket (272) in the first inner support assembly (2A).

7. The apparatus of claim 2 wherein, The top cover (210) of the second inner support assembly (2B) is fixedly connected with a first telescopic rod (800), the top end of the first telescopic rod (800) penetrates through the circular box (220), the rotating disc (230) and the cylindrical barrel (700) in the first inner support assembly (2A), and the top end of the first telescopic rod (800) is fixedly sleeved with the second sprocket (272) in the second inner support assembly (2B).

8. The apparatus of claim 2, wherein, A plurality of second telescopic rods (900) are fixedly connected between the first inner support assembly (2A) and the second inner support assembly (2B).

9. The apparatus of claim 1, wherein, The lifting assembly (300) comprises: A plurality of supporting columns (310) are fixedly connected to the top of the base (100), and a plurality of recesses (311) are formed in the plurality of supporting columns (310), A plurality of second motors (320) are fixedly connected to the top of the plurality of supporting columns (310), and a plurality of drive ends of the plurality of first motors (120) penetrate into the plurality of recesses (311) and are fixedly connected with a plurality of lead screws (321). Lift blocks (330), two of which are slidingly arranged in the grooves (311), are in threaded cooperation with the lead screws (321), and are fixedly connected to the two ends of the support plate (500).

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