Fine polishing equipment for watchbands

Abstract

The invention relates to the technical field of watchband grinding, and discloses a fine polishing device for a watchband of a watch, the fine polishing device comprises a magnetic workbench and a polishing part, the polishing part is arranged above the magnetic workbench, the polishing part comprises a polishing barrel and a base, the polishing barrel is connected with the base through a sealing piece arranged on the outer surface of the circumference of the polishing barrel, and the base is connected with the magnetic workbench. A polishing barrel is arranged on the base, a barrel cover is detachably mounted at the top of the polishing barrel, a screening mechanism capable of being used for separating all parts of a watchband is arranged in the barrel cover, a through hole is formed in the bottom end of the polishing barrel, and a filtering mechanism capable of being used for separating polishing liquid from all the parts of the watchband is arranged in the base. According to the fine polishing equipment for the watchband of the watch, the problems that in the prior art, due to the fact that a connecting piece in the watchband is a small pin and is almost the same as a polishing needle in shape and size, after polishing is completed, a worker is difficult to separate the polishing needle from the watchband connecting piece, and when stainless steel watchbands are polished in batches, the work content is increased, and the polishing efficiency is reduced can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of watch strap polishing, and in particular to a fine polishing device for a watch strap. Background Art

[0002] The watch strap is an important part that connects the watch to the wearer's wrist. There are many types of watch strap materials, among which stainless steel straps are widely loved. The strap mainly includes buckles, strap links and connectors. In order to increase the aesthetics of the stainless steel strap, the stainless steel strap can be polished using a magnetic polishing machine. Before polishing the stainless steel strap, the staff puts the polishing material and related parts of the stainless steel strap into the magnetic polishing machine, and the magnetic polishing machine polishes it according to the preset time and speed.

[0003] When polishing a stainless steel watch strap, first select a suitable type of stainless steel polishing needle, then add an appropriate amount of water and polishing liquid into the polishing barrel. The magnetic polishing machine controls the movement of the stainless steel polishing needle through the magnetic field generated by the electromagnetic coil. When the magnetic field acts on the stainless steel polishing needle, the stainless steel polishing needle will produce high-speed rotation and collision, thereby evenly polishing the various components of the watch strap placed in the polishing barrel. Since the connectors in the watch strap are tiny pins, their shape and size are almost the same as those of the polishing needles. After polishing is completed, it is difficult for the staff to separate the polishing needles and the watch strap connectors. When polishing stainless steel watch straps in batches, the workload is increased and the polishing efficiency is reduced. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a fine polishing equipment for watch straps, which can effectively solve the problem in the prior art that, since the connecting parts in the watch straps are small pins, the shape and size are almost the same as the polishing needles, and it is difficult for workers to separate the polishing needles and the watch strap connecting parts after polishing is completed, which increases the workload and reduces the polishing efficiency when polishing stainless steel watch straps in batches.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a fine polishing device for a watch strap, comprising:

[0008] Magnetic work table;

[0009] A polishing part, which is arranged above the magnetic workbench and includes a polishing barrel and a base. The polishing barrel is connected to the base via a seal arranged on the outer surface of the circumference thereof. A barrel cover is detachably mounted on the top of the polishing barrel, and a screening mechanism is arranged inside the barrel cover for separating the watch strap components and the polishing needle;

[0010] A through hole is provided at the bottom end of the polishing barrel, and a filtering mechanism for separating the polishing liquid and various components of the watch strap is provided in the base.

[0011] Furthermore, the filtering mechanism includes a U-shaped frame, which is fixedly connected to the bottom end of the polishing barrel, and Z-shaped grooves are opened on both sides of the U-shaped frame. A sealing plate is slidably connected in the Z-shaped groove, and the side wall of the sealing plate is connected to the inner wall of the U-shaped frame through a reset spring, and the bottom end of the sealing plate is fixedly connected to a connecting block, and the inclined surface of the connecting block is slidably connected to a push block, and the push block is fixedly connected to the bottom end of the polishing barrel through a lifting rod arranged at the top thereof.

[0012] Furthermore, a conical cover which can be used to collect polishing liquid is fixedly connected to the bottom end of the polishing barrel, and a drain pipe is fixedly connected to the bottom end of the conical cover, and the end of the drain pipe passes through the inner wall of the base.

[0013] Furthermore, the sealing member further comprises a fixed block and a limit block, the fixed block being fixedly connected to the circumferential outer surface of the polishing barrel, the fixed block being slidably connected to a plug-in plate via a slide groove provided on its surface, and a card slot being provided on the surface of the plug-in plate, the plug-in plate being connected to the fixed block on the side away from the card slot via a compression spring, the limit block being fixedly connected to the circumferential outer surface of the base, a card block being fixedly connected to the top of the limit block, a plug-in groove being provided on the top of the limit block which fits the side wall of the plug-in plate, and a sealing gasket being detachably installed between the base and the polishing barrel.

[0014] Furthermore, the screening mechanism includes a mounting frame, which is conical and can be detachably installed between an elastic clip arranged on the top of the mounting frame and the top inner side of the barrel cover. The mounting frame is movably connected to a screen plate via a groove opened on its surface. The screen plate is composed of two thin plates. A slot hole is opened on the surface of the thin plate away from the barrel cover. The slot hole is vertically arranged and is conical. A discharge port is opened on the surface of the thin plate close to the barrel cover, and the surface of the thin plate is provided with a driving unit for separating the polishing needle.

[0015] Furthermore, the screening mechanism also includes a collecting hood, the upper and lower parts of which are both conical, the collecting hood is detachably installed between a magnetic part arranged at the top thereof and a mounting frame, a baffle is fixedly connected to the outer surface of the collecting hood, a feed port is opened on the outer surface of the collecting hood, a pair of adjacent surfaces of the baffles are fixedly connected with an inclined plate, and the inclined plate is aligned with the feed port, and a cover plate is detachably installed on the top of the collecting hood.

[0016] Furthermore, a collection bucket is detachably mounted on the top of the bucket cover via a connecting piece.

[0017] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] The present invention is provided with a screen plate vibration in the screening mechanism, so that the stainless steel polishing needles and watch pins on the screen plate will fall from the slot holes, while the larger parts such as the watch strap links and watch buckles will stay on the screen plate surface, so that the preliminary separation can be completed. At the same time, the stainless steel polishing needles and watch strap pins can be sorted again by magnetic separation. As the staff flips the barrel cover, the polishing needles, watch links, watch buckles and watch strap pins can be quickly sorted. Since the slot holes are arranged in a vertical cone shape and grooves are arranged on the slot holes As well as the block, it can ensure that the moving stainless steel polishing needle and watch strap pin will fall directly into the slot after contacting the block, and the conical slot can prevent the stainless steel polishing needle and watch strap pin from going back through the slot again during the flipping of the barrel cover, affecting the sorting efficiency. At the same time, a closed space can be formed between the cover plate, the inclined plate and the baffle. When the barrel cover is flipped, the watch strap components and the polishing needle that fall downward will enter the feed port along the inclined plate and then enter the conical cover again, without being distributed in a disorderly manner, which is convenient for sorting again. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a partial three-dimensional structure of a polishing barrel, a barrel cover and a base according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of a partial three-dimensional structure of a base and a through hole according to an embodiment of the present invention;

[0023] Figure 4 For the embodiment of the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0024] Figure 5 This is a schematic diagram of the partial structure of the filtering mechanism of an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of a barrel cover according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of a partial three-dimensional structure of a mounting frame according to an embodiment of the present invention;

[0027] Figure 8It is a schematic diagram of the local three-dimensional structure of the slots and the sieve plate according to an embodiment of the present invention.

[0028] The numbers in the figure represent: 1. magnetic workbench; 2. polishing part; 21. polishing barrel; 22. base; 23. seal; 231. fixed block; 232. limit block; 233. plug-in plate; 234. slot; 235. block; 236. plug-in slot; 237. sealing gasket; 24. barrel cover; 25. screening mechanism; 251. mounting frame; 252. sieve plate; 253. slot; 254. discharge port; 255. collecting cover; 256. baffle; 257. feed port; 258. inclined plate; 259. cover plate; 26. through hole; 27. filtering mechanism; 271. U-shaped frame; 272. Z-shaped slot; 273. sealing plate; 274. connecting block; 275. push block; 276. lifting rod; 277. conical cover; 278. drain pipe; 28. collecting barrel. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The present invention will be further described below in conjunction with the embodiments.

[0031] Example:

[0032] See also Figure 1-Figure 8 The present invention provides a technical solution: a fine polishing device for a watch strap, comprising:

[0033] Magnetic workbench 1;

[0034] The polishing part 2 is arranged above the magnetic workbench 1. The polishing part 2 includes a polishing barrel 21 and a base 22. The polishing barrel 21 is connected to the base 22 via a seal 23 arranged on the outer surface of the circumference thereof. A barrel cover 24 is detachably mounted on the top of the polishing barrel 21. A screening mechanism 25 is arranged inside the barrel cover 24 for separating the various components of the watch strap and the polishing needle;

[0035] A through hole 26 is provided at the bottom of the polishing barrel 21 , and a filtering mechanism 27 for separating the polishing liquid and the components of the watch strap is provided in the base 22 .

[0036] The filtering mechanism 27 includes a U-shaped frame 271, which is fixedly connected to the bottom end of the polishing barrel 21. Z-shaped grooves 272 are provided on both sides of the U-shaped frame 271. A sealing plate 273 is slidably connected in the Z-shaped groove 272, and the side wall of the sealing plate 273 is connected to the inner wall of the U-shaped frame 271 through a reset spring. A connecting block 274 is fixedly connected to the bottom end of the sealing plate 273, and a push block 275 is slidably connected to the inclined surface of the connecting block 274, and the push block 275 is fixedly connected to the bottom end of the polishing barrel 21 through a lifting rod 276 arranged at its top.

[0037] A conical cover 277 for collecting polishing liquid is fixedly connected to the bottom end of the polishing barrel 21 . A drain pipe 278 is fixedly connected to the bottom end of the conical cover 277 , and the end of the drain pipe 278 passes through the inner wall of the base 22 .

[0038] The seal 23 also includes a fixed block 231 and a limit block 232. The fixed block 231 is fixedly connected to the circumferential outer surface of the polishing barrel 21. The fixed block 231 is slidably connected to the plug-in plate 233 through a sliding groove opened on its surface, and a card slot 234 is opened on the surface of the plug-in plate 233. The side of the plug-in plate 233 away from the card slot 234 is connected to the fixed block 231 through a compression spring. The limit block 232 is fixedly connected to the circumferential outer surface of the base 22. A card block 235 is fixedly connected to the top of the limit block 232. A plug-in groove 236 that fits the side wall of the plug-in plate 233 is opened on the top of the limit block 232. A sealing gasket 237 is detachably installed between the base 22 and the polishing barrel 21.

[0039] The screening mechanism 25 includes a mounting frame 251, which is conical and can be detachably mounted between the top of the barrel cover 24 and the elastic clip arranged on the top of the mounting frame 251. The mounting frame 251 is movably connected to a sieve plate 252 through a groove opened on its surface. The sieve plate 252 is composed of two thin plates. A slot 253 is opened on the surface of the thin plate away from the barrel cover 24. The slot 253 is vertically arranged and conical. A discharge port 254 is opened on the surface of the thin plate close to the barrel cover 24, and the surface of the thin plate is provided with a driving unit for separating the polishing needle.

[0040] The screening mechanism 25 also includes a collecting hood 255. The upper and lower parts of the collecting hood 255 are both conical. The collecting hood 255 is detachably installed between a magnetic part arranged at the top thereof and the mounting frame 251. A baffle plate 256 is fixedly connected to the outer surface of the collecting hood 255. A feed port 257 is opened on the outer surface of the collecting hood 255. An inclined plate 258 is fixedly connected to the adjacent surfaces of a pair of baffle plates 256, and the inclined plate 258 is aligned with the feed port 257. A cover plate 259 is detachably installed on the top of the collecting hood 255.

[0041] A collection bucket 28 is detachably mounted on the top of the bucket cover 24 via a connecting piece.

[0042] refer to Figure 1-Figure 8 , because the connecting parts in the strap are tiny pins, the shape and size are almost the same as the polishing needles. After polishing, it is difficult for the staff to separate the polishing needles and the strap connecting parts. When polishing stainless steel straps in batches, the workload is increased and the polishing efficiency is reduced;

[0043] In order to overcome the above-mentioned defects, the present invention designs a fine polishing device for watch straps.

[0044] Watch strap before polishing:

[0045] The staff puts the various components of the watch strap into the polishing barrel 21, and then adds an appropriate amount of polishing needles, water and polishing liquid (stainless steel polishing needles are used for the polishing needles) into the polishing barrel 21. After the addition is completed, the staff uses the barrel cover 24 to seal the upper part of the polishing barrel 21 (magnets are arranged inside the barrel cover 24 and on the side walls of the polishing barrel 21, and magnetic force is generated between the magnets. When the polarities between the magnets are the same, the barrel cover 24 and the polishing barrel 21 can be quickly disassembled. When the polarities between the magnets are opposite, the barrel cover 24 and the polishing barrel 21 are quickly installed and fixed. The magnetic force generated between the magnets is used to facilitate the staff to quickly disassemble and assemble the barrel cover 24 and the polishing barrel 21). This can prevent the high-speed rotating polishing needles in the polishing barrel 21 from causing the polishing liquid to splash out of the polishing barrel 21 during the polishing process.

[0046] When polishing needles, watch strap components and polishing liquid are not added to the polishing barrel 21, the first card slot 234 on the surface of the plug-in board 233 will engage with the card block 235, and the polishing barrel 21 and the base 22 can be initially sealed by the sealing gasket 237. After the polishing needles, watch strap components and polishing liquid are added to the polishing barrel 21, the polishing barrel 21 will move downward under the cooperation of the gravity of the polishing barrel 21 itself and the gravity of the grinding material and the watch strap components in the barrel, so that the plug-in board 233 will move downward synchronously. At this time, the card block 235 and the plug-in board 233 are squeezed. With the cooperation of the compression spring, the card block 235 can be engaged in the second card slot 234 (the card block 235 and the card slot 234 are chamfered, and the card block 235 can smoothly transition to the second card slot 234), and the sealing gasket 237 is squeezed, so that the connection between the polishing barrel 21 and the base 22 is tighter, and the polishing liquid in the base 22 is prevented from flowing out.

[0047] After the adding is completed, the staff uses the auxiliary handle on the polishing barrel 21 to place the polishing barrel 21 on the magnetic workbench 1, and starts the magnetic workbench 1 to generate super strong electromagnetic force to conduct the tiny polishing needles. The polishing barrel 21 and the barrel cover 24 complete high-speed jumping, flowing, turning and other actions in the space surrounded by the polishing barrel 21 and the barrel cover 24, and rub the inner holes and surfaces of various components of the stainless steel watch strap to achieve precision polishing effects such as polishing, cleaning and burr removal.

[0048] Polishing liquid separation:

[0049] After polishing is completed, the staff controls the lifting rod 276 at the bottom of the polishing barrel 21 (the lifting rod 276 is arranged in the protective cover shell to prevent the polishing liquid from entering the lifting rod 276, causing the lifting rod 276 to be damaged and unable to be used normally), and the lifting rod 276 drives the push block 275 to move, and then the connecting block 274 will move toward each other (an inclined surface is arranged between the contacting surfaces of the push block 275 and the connecting block 274, and a guide groove is arranged on the inclined surface of the connecting block 274, and a guide block is arranged on the inclined surface of the push block 275, and the guide block can slide in the guide groove, so that the connecting block 274 can move toward each other), at this time, the sealing plate 273 will move along the Z-shaped groove 272, and when the sealing plate 273 moves along the upper "horizontal groove" of the Z-shaped groove 272 When the sealing plate 273 and the bottom end of the polishing barrel 21 are still in a tightly fitted state, when the sealing plate 273 moves along the "horizontal groove" at the lower part of the Z-shaped groove 272, a gap will be formed between the sealing plate 273 and the polishing barrel 21, and the polishing liquid will flow into the base 22 along the through hole 26 (when the sealing plate 273 is in the initial state, the sealing plate 273 and the bottom of the polishing barrel 21 are tightly fitted, and the polishing liquid will not flow into the base 22. After the polishing is completed, as the sealing plate 273 moves, a small amount of polishing liquid will flow into the base 22. After a gap is generated between the sealing plate 273 and the polishing barrel 21, all the polishing liquid will flow into the base 22. In addition, the through hole 26 is a vertical circular hole with a small aperture, and the polishing needle and the watch strap connector will not flow into the base 22).

[0050] In addition, a conical cover 277 is provided in the base 22. After the polishing liquid flows into the base 22, it is collected in the conical cover 277. With the help of the inclined drainage pipe 278, the polishing liquid in the conical cover 277 can be discharged from the base 22 (after the polishing liquid enters the base 22, the lifting rod 276 cooperates with the push block 275 and the connecting block 274, and the sealing plate 273 will be reset to seal the through hole 26 again. At this time, all the polishing liquid is collected in the base 22, and the polishing liquid is separated from the grinding material and the components of the watch strap).

[0051] Polishing needle and separation between watch strap components:

[0052] After the polishing liquid is discharged from the polishing barrel 21, the polishing barrel 21 is turned over by using the auxiliary handle on the polishing barrel 21. At this time, the polishing needles and various components of the watch strap in the polishing barrel 21 will fall into the collecting cover 255 under the action of their own gravity, and will move toward the sieve plate 252 along the channel formed between the baffle 256 and the inner wall of the collecting cover 255. At this time, the driving unit on the thin plate without the slot hole 253 (the driving unit is provided with a vibration motor that can drive the sieve plate 252 to vibrate in the mounting groove) will drive the sieve plate 252 to vibrate in the mounting frame 251, and the watch chain links and larger watch buckle-shaped components will move toward the bottom of the thin plate with the slot hole 253, and the polishing needles and watch pins with smaller sizes will move toward the bottom of the thin plate with the slot hole 253. Small components will enter the surface of the thin plate without slot holes 253 along the slot holes 253 (the slot holes 253 are vertically arranged, and each slot hole 253 is provided with grooves and blocks. When the polishing needle and the watch pin come into contact with the grooves and blocks, they will directly enter the slot holes 253). The electromagnet on the thin plate without slot holes 253 will adsorb the polishing needle, and the watch pin will enter the discharge port 254 along its surface, and finally fall into the collection bucket 28 through the open groove (the stainless steel polishing needle has a certain magnetic conductivity, and the magnetic conductivity of the various components of the watch strap is artificially neutralized during the production process, so that they have no magnetic conductivity. The difference in their own magnetic properties can be used to achieve separation between the watch pin and the polishing needle).

[0053] Then, separate the polishing barrel 21 from the barrel cover 24, and install the cover plate 259 on the collecting cover 255. At this time, turn the barrel cover 24 up and down, and the unseparated watch links, polishing needles and watch pins will return to the collecting cover 255 along the inclined plate 258 and the feed port 257 (a partition is provided at the opening groove, and the watch pins inside will not enter the collecting cover 255 as the barrel cover 24 is turned over). Repeat the above operation, the polishing needle will be adsorbed on the thin plate by the electromagnet, the watch links and clasps will fall on the mounting frame 251, and the watch pins will be collected in the collecting barrel 28, thereby achieving mutual separation, and the staff can collect them separately.

[0054] The present application uses the screening mechanism 25, the filtering mechanism 27 and the sealing member 23, which have the following advantages:

[0055] Advantage 1: The lifting rod 276 cooperates with the push block 275, the connecting block 274, the Z-shaped groove 272 and the sealing plate 273 to open the through hole 26, so as to separate the various components of the watch strap and the polishing needle from the polishing liquid. When the polishing barrel 21 is flipped over, the polishing liquid will be collected in the base 22, which will not affect the sorting between the various components of the watch strap and the polishing needle. At the same time, the base 22 is provided with a conical cover 277 and a drain pipe 278, which can discharge the polishing liquid from the base 22, making it convenient for the staff to clean the polishing liquid regularly.

[0056] Advantage two, by utilizing the gravity of the polishing barrel 21 itself and the gravity of the grinding material in the barrel and the various components of the watch strap, extrusion occurs between the clamping block 235 and the plug-in board 233. With the cooperation of the compression spring, the clamping block 235 can be engaged in the second clamping groove 234, so that the connection between the mounting groove and the sealing gasket 237 is tighter, thereby achieving a tighter connection between the polishing barrel 21 and the base 22, avoiding a loose connection between the base 22 and the polishing barrel 21, causing the polishing liquid to flow out and affecting subsequent use.

[0057] Advantage three, by utilizing the vibration of the sieve plate 252 in the screening mechanism 25, the stainless steel polishing needles and watch pins on the sieve plate 252 will fall from the slots 253, and the slots 253 are arranged in a vertical cone shape, and grooves and blocks are arranged on the slots 253, which can ensure that the moving stainless steel polishing needles and watch strap pins will directly fall into the slots 253 after contacting the blocks, and the conical slots 253 can prevent the stainless steel polishing needles and watch strap pins from returning from the slots 253 again during the turning over of the barrel cover 24, thereby affecting the sorting efficiency, and the larger parts such as the watch strap links and watch buckles will stay on the surface of the sieve plate 252, which can be completely At the same time, magnetic separation can be used to sort the stainless steel polishing needles and watch strap pins again. As the staff flips the barrel cover 24, a closed space can be formed between the cover plate 259, the inclined plate 258 and the baffle 256. When the barrel cover 24 is flipped, the watch strap components and the polishing needles that fall downward will enter the feed port 257 along the inclined plate 258 and then enter the conical cover 277 again. They will not be distributed in a disorderly manner, which is convenient for sorting again. The polishing needles, watch links, watch buckles and watch strap pins can be quickly sorted, which reduces the subsequent workload of the staff and improves the grinding and polishing efficiency of the watch strap.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fine polishing device for watch straps, characterized in that: include: Magnetic workbench (1); A polishing section (2), the polishing section (2) being arranged above the magnetic workbench (1), the polishing section (2) comprising a polishing barrel (21) and a base (22), the polishing barrel (21) being connected to the base (22) via a sealing member (23) arranged on the outer surface of the polishing barrel (21), a barrel cover (24) being detachably mounted on the top of the polishing barrel (21), the barrel cover (24) being provided with a screening mechanism (25) for separating various watchband components and polishing needles; The bottom end of the polishing barrel (21) is provided with a through hole (26), and the base (22) is provided with a filtering mechanism (27) for separating the polishing liquid and various components of the watch strap.

2. A fine polishing device for a watch strap according to claim 1, characterized in that: The filtering mechanism (27) comprises a U-shaped frame (271), the U-shaped frame (271) being fixedly connected to the bottom end of the polishing barrel (21), the U-shaped frame (271) being provided with Z-shaped grooves (272) on both sides, a sealing plate (273) being slidably connected in the Z-shaped groove (272), and the side wall of the sealing plate (273) being connected to the inner wall of the U-shaped frame (271) via a return spring, the bottom end of the sealing plate (273) being fixedly connected to a connecting block (274), the connecting block (274) being slidably connected to a push block (275) on an inclined surface, and the push block (275) being fixedly connected to the bottom end of the polishing barrel (21) via a lifting rod (276) arranged at the top end thereof.

3. The fine polishing device for a watch strap according to claim 1, characterized in that: The bottom end of the polishing barrel (21) is fixedly connected to a conical cover (277) for collecting polishing liquid in a centralized manner, and the bottom end of the conical cover (277) is fixedly connected to a drainage pipe (278), and the end of the drainage pipe (278) passes through the inner wall of the base (22).

4. The fine polishing device for a watch strap according to claim 1, characterized in that: The sealing member (23) further comprises a fixed block (231) and a limit block (232); the fixed block (231) is fixedly connected to the outer circumferential surface of the polishing barrel (21); the fixed block (231) is slidably connected to a plug-in board (233) via a sliding groove provided on its surface; a clamping groove (234) is provided on the surface of the plug-in board (233); a side of the plug-in board (233) away from the clamping groove (234) is connected to the fixed block (231) via a compression spring; the limit block (232) is fixedly connected to the outer circumferential surface of the base (22); a clamping block (235) is fixedly connected to the top of the limit block (232); a plug-in groove (236) is provided on the top of the limit block (232) and is fitted with a side wall of the plug-in board (233); and a sealing gasket (237) is detachably installed between the base (22) and the polishing barrel (21).

5. The fine polishing device for a watch strap according to claim 1, characterized in that: The screening mechanism (25) comprises a mounting frame (251), the mounting frame (251) is conical, and the mounting frame (251) is detachably mounted between the top of the barrel cover (24) and the mounting frame (251) via an elastic buckle arranged at the top thereof; the mounting frame (251) is movably connected to a screening plate (252) via a notch provided on its surface; the screening plate (252) is composed of two thin plates; a slot hole (253) is provided on the surface of the thin plate away from the barrel cover (24); the slot hole (253) is vertically arranged and is conical; a discharge port (254) is provided on the surface of the thin plate close to the barrel cover (24); and a drive unit for separating a polishing needle is provided on the surface of the thin plate.

6. The fine polishing device for a watch strap according to claim 1, characterized in that: The screening mechanism (25) further comprises a collecting hood (255), the upper and lower parts of which are both conical, the collecting hood (255) being detachably mounted between a magnetic member disposed at the top thereof and a mounting frame (251), a baffle (256) being fixedly connected to the outer surface of the collecting hood (255), a feed port (257) being provided on the outer surface of the collecting hood (255), a pair of adjacent surfaces of the baffles (256) being fixedly connected to an inclined plate (258), and the inclined plate (258) being aligned with the feed port (257), and a cover plate (259) being detachably mounted on the top of the collecting hood (255).

7. The fine polishing device for a watch strap according to claim 1, characterized in that: A collecting bucket (28) is detachably mounted on the top of the bucket cover (24) via a connecting piece.

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