Polishing and grinding device for metal valve ball

Abstract

The invention discloses a metal valve ball polishing and grinding device, and relates to the technical field of metal polishing, the metal valve ball polishing and grinding device comprises a group of splicing bottom plates, the top of the group of splicing bottom plates is provided with a coating polishing mechanism, the coating polishing mechanism internally comprises a grading downward pressing mechanism, and the coating polishing mechanism comprises a lower cavity and an upper cavity; first plastic cement plates are arranged above the lower cavity body and below the upper cavity body, the grading downward pressing mechanism comprises an outer annular plate and two pressure-bearing connectors, an orientation limiting piece is arranged above each pressure-bearing connector, a conical pressing head is arranged above each orientation limiting piece, and due to the characteristic that materials can deform, the pressing head can be pressed into the first plastic cement plates, so that the pressing head can be pressed into the second plastic cement plates, and the pressing head can be pressed into the second plastic cement plates. The inner concave body is forced to be formed through external force and used for wrapping the valve ball, the grinding pieces evenly distributed in the concave body can fully cover the complete outer wall of the valve ball, the valve ball freely rolls in the concave body and fully makes contact with the grinding pieces subsequently in a mechanical rolling mode, and treatment of surface protrusions is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of metal polishing, and specifically to a polishing and grinding device for metal valve balls. Background Technique

[0002] The metal valve ball is an important component in valves and is widely used in various industrial fields. It is mainly used to control the flow direction, flow rate, and pressure of fluids. Due to its high strength, corrosion resistance, and good sealing performance, the metal valve ball has been widely used in industries such as petroleum, chemical, natural gas, and pharmaceuticals.

[0003] Through appropriate polishing treatment, the performance and service life of the metal valve ball can be significantly improved, ensuring that the valve can operate efficiently and reliably under various working conditions. The specific improvement items mainly include improving the sealing performance, enhancing wear resistance, improving the appearance quality, and increasing the accuracy and consistency.

[0004] However, the existing polishing and grinding devices for metal valve balls have the following deficiencies:

[0005] The difference between polishing the sphere and conventional parts is that traditional machinery cannot be used to fix the main body, which will cause large - area occlusion of the surface wall, resulting in inconsistent polishing intensity on the wall surface. Due to the limitations of its own structure, after the valve ball is placed in the existing valve ball polishing equipment, the spherical surface needs to be repeatedly adjusted. There are too many manual assistance items during the process, which not only results in low polishing efficiency, but also cannot ensure that all parts of the valve ball can be processed uniformly, easily causing dimensional deviation.

[0006] Therefore, we propose a polishing and grinding device for metal valve balls to solve the problems raised above. Summary of the Invention

[0007] The purpose of the present invention is to provide a polishing and grinding device for metal valve balls. By setting a coating polishing mechanism, the mechanism can combine the external force with the extrusion of the valve ball structure to force the upper and lower soft rubber parts to form concave arc surfaces in opposite directions. When the complete concave surface is formed, the valve ball can be suspended therein, and the outer wall can be fully surrounded by the grinding parts. Combined with physical drive, the valve ball can be freely rolled and polished to solve the problems raised in the above - mentioned background technique.

[0008] To achieve the above - mentioned purpose, the present invention provides the following technical solution: A polishing and grinding device for metal valve balls, including a group of spliced bottom plates. A coating polishing mechanism is provided on the top of the group of spliced bottom plates, and a grading and pressing mechanism is included inside the coating polishing mechanism;

[0009] Coating and polishing mechanism, the coating and polishing mechanism includes a lower cavity body and an upper cavity body. A first plastic plate is provided above the lower cavity body and below the upper cavity body. The two first plastic plates are used for coating and locking the valve ball. A plurality of grinding blocks are evenly arranged on the surface of each first plastic plate. When the valve ball is placed between the two first plastic plates and an external force is applied to one of the first plastic plates, the valve ball will lift the two first plastic plates, forming two concave surfaces in opposite directions. Then the valve ball can be wrapped into the two first plastic plates, and at the same time, the outer wall of the valve ball can fully contact with some of the grinding blocks.

[0010] Grading and pressing mechanism, the grading and pressing mechanism includes an outer annular plate and two pressure-bearing joints. An azimuth limiting member is provided above each pressure-bearing joint, and a conical pressing head is provided above each azimuth limiting member. When the two pressure-bearing joints are located above the outer annular plate, the two conical pressing heads start to contact the connecting structure of the pressure-bearing joints. Continuously lowering the conical pressing head, the generated downward pressure directly acts on the pressure-bearing joints, further forcing the outer annular plate and its connected components to complete downward pressing, increasing the squeezing force of the two first plastic plates on the valve ball.

[0011] Preferably, a first locking ring sleeve is fixedly installed on the inner wall of the lower cavity body, and one of the first plastic plates is fixed inside the first locking ring sleeve. A second locking ring sleeve is provided at the bottom of the upper cavity body, and one of the first plastic plates is fixed inside the second locking ring sleeve.

[0012] Preferably, grooved longitudinal plates are assembled on the tops of the two splicing bottom plates. A set of first sliding sleeve limiters are installed on the opposite sides of the two grooved longitudinal plates. A load-bearing bracket is fixedly installed at one end of each set of first sliding sleeve limiters. A combined bracket is installed between the tops of the two load-bearing brackets. A reducer is installed between the opposite sides of a set of combined brackets. The power input end of the reducer is fixedly connected to a servo motor.

[0013] Preferably, a cover is sealed on the top of the upper cavity body. A driven roller is fixedly installed at the center of the cover. The power output end of the reducer is fixedly connected to a driving roller. A set of traction belts are movably sleeved between the outer surfaces of the driven roller and the driving roller.

[0014] Preferably, a set of pneumatic telescopic members are fixedly connected to the outer surface of each grooved longitudinal plate. A first connecting member is fixedly sleeved between the shaft ends of each set of pneumatic telescopic members. Each first connecting member is respectively connected to a corresponding load-bearing bracket. A hollow sleeve is fixedly installed between the opposite sides of the two load-bearing brackets. A roller bearing is connected to the inner wall of the hollow sleeve. The inner shaft inner wall of the roller bearing is connected to the outer wall of the upper cavity body.

[0015] Preferably, a plurality of round holes are equidistantly formed inside each of the first plastic plates, and a bushing is installed inside each round hole.

[0016] Preferably, the grading and pressing mechanism further includes two rectangular shell sleeves. A set of second sliding sleeve limiters are installed on the inner walls of each of the rectangular shell sleeves. A grooved solid plate is fixedly installed between the opposite sides of each set of second sliding sleeve limiters. A U-shaped groove is formed at one end of each grooved solid plate. A cylindrical joint is movably arranged inside each U-shaped groove. Each cylindrical joint is respectively connected to a corresponding pressure-bearing joint. Each orientation limiter is fixedly installed on the top of a corresponding grooved solid plate. A pressure-bearing frame is installed on the top of each grooved solid plate. Each conical pressing head is fixedly installed at the bottom of a corresponding load-bearing bracket. A motor assembly is arranged outside each grooved solid plate. The output end of each motor assembly is respectively connected to one end of a corresponding cylindrical joint.

[0017] Preferably, a set of first metal rods are inserted into the groove body of each grooved solid plate. A square seat is movably sleeved between the outer surfaces of each set of first metal rods. A movable member is fixedly installed at the bottom of each pressure-bearing joint and the square seat. A traction rod is installed between the outer surfaces of every two movable members.

[0018] Preferably, a set of first active springs are connected to the outer wall of each square seat. The first ends of each set of first active springs are respectively connected to the inner wall of the groove body of the corresponding grooved solid plate. A set of second metal rods are inserted between the top and bottom of the inner wall of each rectangular shell sleeve. Each U-shaped groove is movably connected to a corresponding set of second metal rods. A set of second active springs are connected to the bottom of each grooved solid plate. The first ends of each set of second active springs are respectively connected to the bottom of the inner wall of the rectangular shell sleeve.

[0019] Preferably, a set of inner grooves are formed inside the upper air cavity. A set of connecting members are fixedly installed at the bottom of the upper air cavity. A set of hollow tubes are fixedly installed inside each connecting member. A third metal rod is movably inserted into each hollow tube. The bottom of each set of third metal rods is connected to the top of the second locking ring sleeve. A second connecting member is fixedly installed between the tops of each set of third metal rods. An outer annular plate is fixedly installed between the outer surfaces of a plurality of second connecting members. A set of third active springs are fixedly installed between each connecting member and the second connecting member.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The present invention sets up a coating and polishing mechanism. The two soft rubber parts are respectively located at the upper and lower ends of the valve ball. Under the cooperation of the mechanical components, the pressure is released by the upper soft rubber part, and combined with the extrusion of the valve ball structure, it forces the two soft rubber parts to have concave arc surfaces in opposite directions. Since the polishing parts installed on the soft rubber parts are evenly distributed on the periphery, when the position of the valve ball is locked, its two ends respectively contact the midpoints of the two soft rubber parts. Utilizing the physical properties of the material, during the coating process, the material will form a strong frictional force on both ends of the valve ball, preventing the valve ball body from having a large-angle deviation. When the inner groove is formed, the outer wall of the valve ball will be lifted by the evenly surrounded polishing parts and will not be in direct contact with the formed concave surface. With the opening of the driving component, the valve ball can rotate in the concave body, and the polishing parts continuously polish the surface of the valve ball. The mechanism uses the deformable characteristics of the material and uses external force to force the formation of the concave body for valve ball wrapping. The evenly distributed polishing parts in the concave body can fully cover the entire outer wall of the valve ball. Subsequently, through the mechanical rolling method, the valve ball freely rolls in the concave body and fully contacts the polishing parts to complete the treatment of surface protrusions.

[0022] 2. The present invention sets up a hierarchical pressing mechanism. The mechanism consists of multiple actively cooperating components. The purpose is that when the upper soft rubber part contacts the valve ball, the inner outer ring plate presses on the pressure-bearing joint. Using the set movable joints, it forces the pressure-bearing joint to change its angle, providing conditions for the continuous downward movement of the outer ring plate. When the outer ring plate is separated from the pressure-bearing joint, the pressure-bearing joint can quickly reset with the assistance of the structure. The pressure-bearing joint and the outer ring plate exchange positions. At this time, the conical pressing head can fully contact the pressure-receiving frame. As the conical pressing head further presses down the pressure-receiving frame, the pressure-bearing joint can act on the outer ring plate synchronously, further applying a downward pressure to the upper soft rubber part. This method builds a reverse pushing path on the original path basis to achieve the purpose of expanding the pressing height. Moreover, the upper soft rubber part is assembled in a split manner, and thus can form a buffer with the main body part. The polishing intensity can be directly determined by the lower path components and is regulated step by step to ensure that the outer wall of the valve ball can be fully covered by the upper and lower soft rubber parts, thereby avoiding the generation of gaps, enabling the set polishing parts to be evenly distributed on the outer wall of the valve ball, and effectively improving the polishing consistency of the valve ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view three-dimensional structure diagram of a polishing and grinding device for a metal valve ball of the present invention;

[0024] Figure 2 is the bottom side three-dimensional structure diagram of a polishing and grinding device for a metal valve ball of the present invention;

[0025] Figure 3 is the enlarged three-dimensional structure diagram of the coating and polishing mechanism of a polishing and grinding device for a metal valve ball of the present invention;

[0026] Figure 4 is Figure 3 The enlarged three-dimensional view of structure A in

[0027] Figure 5 The enlarged three-dimensional view of the connected structure of the grooved vertical plate in the polishing and grinding device for a metal valve ball of the present invention;

[0028] Figure 6 is Figure 5 The enlarged three-dimensional view of structure B in

[0029] Figure 7 The enlarged three-dimensional view of the grading and pressing mechanism in the polishing and grinding device for a metal valve ball of the present invention;

[0030] Figure 8 The force analysis schematic diagram of the polishing and grinding device for a metal valve ball of the present invention.

[0031] In the figure: 1. Spliced bottom plate; 2. Coated polishing mechanism; 201. Lower cavity body; 202. First locking ring sleeve; 203. First plastic plate; 204. Upper cavity body; 205. Second locking ring sleeve; 206. Grinding block; 207. Cover; 208. Grooved vertical plate; 209. First sliding sleeve limiting member; 210. Load-bearing bracket; 211. Merged bracket; 212. Reducer; 213. Servo motor; 214. Driven roller; 215. Driving roller; 216. Traction belt; 217. Pneumatic telescopic member; 218. First connecting member; 219. Hollow sleeve; 220. Roller bearing; 221. Bushing; 3. Grading and pressing mechanism; 301. Rectangular shell sleeve; 302. Second sliding sleeve limiting member; 303. Grooved solid plate; 304. U-shaped groove; 305. Cylindrical joint; 306. Pressure-bearing joint; 307. Azimuth limiting member; 308. Compression frame; 309. Conical pressing head; 310. First metal rod; 311. Square seat; 312. Movable member; 313. Traction rod; 314. First active spring; 315. Second metal rod; 316. Second active spring; 317. Inner groove; 318. Connecting member; 319. Hollow pipe; 320. Third metal rod; 321. Second connecting member; 322. Outer annular plate; 323. Third active spring; 324. Motor assembly. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described implementation clauses are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to the attached Figure 1 - attachedFigure 7 As shown, the present invention provides a technical solution: a polishing and grinding device for a metal valve ball, including a set of spliced bottom plates 1. A coating and polishing mechanism 2 is provided on the top of the set of spliced bottom plates 1, and a grading and pressing mechanism 3 is included inside the coating and polishing mechanism 2.

[0034] Example 1, according to Figures 1 - 5 As shown, the coating and polishing mechanism 2 includes a lower cavity 201 and an upper cavity 204. First plastic plates 203 are provided above the lower cavity 201 and below the upper cavity 204. The two first plastic plates 203 are used for wrapping and locking the valve ball. A plurality of grinding blocks 206 are equidistantly arranged on the surface of each first plastic plate 203. When the valve ball is placed between the two first plastic plates 203 and an external force is applied to one of the first plastic plates 203, the valve ball will push up the two first plastic plates 203, forming two concave surfaces in opposite directions. Then the valve ball can be wrapped into the two first plastic plates 203. At the same time, the outer wall of the valve ball can fully contact with some of the grinding blocks 206. Grooved longitudinal plates 208 are assembled on the top of the two spliced bottom plates 1. A set of first sliding sleeve limiters 209 are installed on the opposite sides of the two grooved longitudinal plates 208. A load-bearing bracket 210 is fixedly installed at one end of each set of first sliding sleeve limiters 209. A combined bracket 211 is installed between the tops of the two load-bearing brackets 210. A speed reducer 212 is installed between the opposite sides of the combined bracket 211. A servo motor 213 is fixedly connected to the power input end of the speed reducer 212. A cover 207 is sealed on the top of the upper cavity 204. A driven roller 214 is fixedly installed at the center of the cover 207. The power output end of the speed reducer 212 is fixedly connected to a driving roller 215. A set of traction belts 216 are movably sleeved between the outer surfaces of the driven roller 214 and the driving roller 215. A set of pneumatic telescopic members 217 are fixedly connected to the outer surface of each grooved longitudinal plate 208. A first connecting member 218 is fixedly sleeved between the shaft ends of each set of pneumatic telescopic members 217. Each first connecting member 218 is respectively connected to a corresponding load-bearing bracket 210. A hollow sleeve 219 is fixedly installed between the opposite sides of the two load-bearing brackets 210. A roller bearing 220 is connected to the inner surface of the hollow sleeve 219. The inner shaft inner surface of the roller bearing 220 is connected to the outer wall of the upper cavity 204.

[0035] The effects achieved by the entire Example 1 are as follows: By presetting the above components, since the two soft rubber parts are respectively located at the upper and lower ends of the valve ball, under the cooperation of the mechanical components, the pressure is released by the upper soft rubber part, and combined with the extrusion of the valve ball structure, two concave arc surfaces in opposite directions are forced to appear on the two soft rubber parts. Since the grinding parts installed on the soft rubber parts are evenly distributed on the periphery, when the position of the valve ball is locked, its two ends respectively contact the midpoints of the two soft rubber parts. Using the physical properties of the material, during the coating process, the material will form a strong frictional force on both ends of the valve ball, so that the valve ball body will not have a large-angle deviation. When the inner groove is formed, the outer wall of the valve ball will be lifted by the grinding parts surrounded at equal intervals and will not be in direct contact with the formed concave surface. With the opening of the driving component, the valve ball can rotate in the concave body, and the grinding parts continuously polish the surface of the valve ball. This method uses the deformable characteristics of the material and uses external force to force the formation of the concave body for valve ball wrapping. The grinding parts evenly distributed in the concave body can fully cover the entire outer wall of the valve ball. Subsequently, through the mechanical rolling method, the valve ball freely rolls in the concave body and fully contacts the grinding parts to complete the treatment of the surface protrusions.

[0036] Example 2, according to Figures 1 - 2 and Figures 4 - 7As shown, the hierarchical pressing mechanism 3 includes an outer annular plate 322 and two bearing joints 306. An azimuth limiting member 307 is provided above each bearing joint 306, and a conical pressing head 309 is provided above each azimuth limiting member 307. When the two bearing joints 306 are located above the outer annular plate 322, the two conical pressing heads 309 start to contact the connecting structure of the bearing joints 306. Continuously lowering the conical pressing heads 309, the generated downward pressure directly acts on the bearing joints 306, further forcing the outer annular plate 322 and its connected components to complete the downward pressing, increasing the squeezing force of the two first plastic plates 203 on the valve ball. The hierarchical pressing mechanism 3 further includes two rectangular shell sleeves 301. A set of second sliding sleeve limiting members 302 is installed on the inner wall of each rectangular shell sleeve 301. A slotted solid plate 303 is fixedly installed between the opposite sides of each set of second sliding sleeve limiting members 302. A U-shaped groove 304 is opened at one end of each slotted solid plate 303. A cylindrical joint 305 is movably provided inside each U-shaped groove 304. Each cylindrical joint 305 is respectively connected to a corresponding bearing joint 306. Each azimuth limiting member 307 is respectively fixedly installed on the top of a corresponding slotted solid plate 303. A pressure receiving frame 308 is installed on the top of each slotted solid plate 303. Each conical pressing head 309 is respectively fixedly installed at the bottom of a corresponding bearing bracket 210. A motor assembly 324 is provided outside each slotted solid plate 303. The output end of each motor assembly 324 is respectively connected to one end of a corresponding cylindrical joint 305. A set of first metal rods 310 is inserted into the groove body of each slotted solid plate 303. A square seat 311 is movably sleeved between the outer surfaces of each set of first metal rods 310. A movable member 312 is fixedly installed at the bottom of each bearing joint 306 and the square seat 311. A traction rod 313 is installed between the outer surfaces of every two movable members 312. A set of first active springs 314 is connected to the outer wall of each square seat 311. The first ends of each set of first active springs 314 are respectively connected to the inner wall of the groove body of the corresponding slotted solid plate 303. A set of second metal rods 315 is inserted between the top and bottom of the inner wall of each rectangular shell sleeve 301. Each U-shaped groove 304 is movably connected to a corresponding set of second metal rods 315. A set of second active springs 316 is connected to the bottom of each slotted solid plate 303. The first ends of each set of second active springs 316 are respectively connected to the bottom of the inner wall of the rectangular shell sleeve 301. A set of inner grooves 317 is opened inside the upper air cavity 204. A set of connecting members 318 is fixedly installed at the bottom of the upper air cavity 204. A set of hollow tubes 319 is fixedly installed inside each connecting member 318. A third metal rod 320 is movably inserted into each hollow tube 319. The bottom of each set of third metal rods 320 is connected to the top of the second locking ring sleeve 205. A second associated member 321 is fixedly installed between the tops of each set of third metal rods 320,An outer annular plate 322 is fixedly installed between the outer surface walls of multiple second associated members 321, and a set of third active springs 323 is fixedly installed between each connecting member 318 and the second associated member 321.

[0037] The effect achieved by the entire Embodiment 2 is as follows: By presetting the above components, the mechanism includes multiple actively cooperating components. The purpose is that when the upper soft rubber part contacts the valve ball, the built-in outer annular plate 322 presses against the pressure-bearing joint 306. Using the provided movable joints, the pressure-bearing joint 306 is forced to change its angle, providing conditions for the continuous downward movement of the outer annular plate 322. When the outer annular plate 322 is separated from the pressure-bearing joint 306, the pressure-bearing joint 306 can quickly reset with the assistance of the structure. The positions of the pressure-bearing joint 306 and the outer annular plate 322 are converted. At this time, the conical pressing head 309 can fully contact the pressure-bearing frame 308. As the conical pressing head 309 further presses down the pressure-bearing frame 308, the pressure-bearing joint 306 can act on the outer annular plate 322 synchronously, further applying a downward pressure to the upper soft rubber part. This method builds a reverse push path on the original path, thereby achieving the purpose of expanding the downward pressing height. Moreover, the upper soft rubber part is assembled in a split manner, and thus can form a buffer with the main body part. The polishing intensity can be directly determined by the lower path parts, and the adjustment is completed step by step to ensure that the outer wall of the valve ball can be fully covered by the upper and lower soft rubber parts, thereby avoiding the generation of gaps, enabling the provided grinding parts to be evenly distributed on the surface wall of the valve ball, and effectively improving the polishing consistency of the valve ball.

[0038] Embodiment 3, according to Figures 2 - 3 As shown, a first locking ring sleeve 202 is fixedly installed on the inner surface wall of the lower cavity body 201, and a first plastic plate 203 is fixed inside the first locking ring sleeve 202. A second locking ring sleeve 205 is provided at the bottom of the upper cavity body 204, and a first plastic plate 203 is fixed inside the second locking ring sleeve 205. A plurality of round holes are equidistantly opened inside each first plastic plate 203, and a bushing 221 is installed inside each round hole.

[0039] The effect achieved by the entire Embodiment 3 is as follows: By presetting the above components, since the mechanism uses external force pressing and valve ball blocking to achieve the deformation of the upper and lower soft rubber parts, during the process, the structure of the components deforms, and the round holes opened therein will also be deformed due to structural pulling. By installing locking parts inside each round hole, the aperture size can be ensured not to be interfered by stretching. The purpose is that when the valve ball is polished, the generated waste chips can be maximally discharged from the round holes, thereby reducing the retention amount on the soft rubber parts, prolonging the waste chip cleaning time, ensuring that the equipment can continuously perform the polishing work, and reducing the subsequent cleaning difficulty.

[0040] The working principle of the entire device is as follows: In the preparation stage, the device is first moved to the designated working area. A hollow-bottom bracket is selected and assembled according to the pre-reserved hole positions on each splicing bottom plate 1 to raise the distance between the lower cavity 201 and the ground. Then, the external wire is connected to the device power supply to provide energy for multiple electrical components inside. The pre-polished valve ball is accurately placed in the middle of a first plastic plate 203;

[0041] In the grading pressing stage, each pneumatic telescopic part 217 is synchronously opened to retract its inner axial cavity. By using the moving characteristics of the first sliding sleeve limiting part 209, it can drive the load-bearing bracket 210 and its connected components to move slowly downward under the traction of the first connecting part 218. When the outer annular plate 322 contacts the top of the pressure-bearing joint 306, as the downward movement continues, the outer annular plate 322 will apply a downward thrust to the pressure-bearing joint 306. By using the movable connection between the U-shaped groove 304 and the cylindrical joint 305, and the traction effect of the movable part 312 and the traction rod 313, the square seat 311 can slide parallel on the first metal rod 310, and the pressure-bearing joint 306 quickly completes a corner rotation, thus avoiding structural restrictions on the downward movement of the outer annular plate 322. At the same time, the first active spring 314 in the groove of the grooved solid plate 303 is in a compressed state under the reverse push of the square seat 311. When the pressure-bearing joint 306 loses the external force support of the outer annular plate 322, the reaction force generated by the first active spring 314 will quickly drive the connected components to reset, making the pressure-bearing joint 306 return to its initial state. At this time, the pressure-bearing joint 306 is located above the outer annular plate 322, and the first plastic plate 203 in the second locking ring sleeve 205 gradually contacts the top of the valve ball. When the conical pressing head 309 fully contacts the pressure-receiving frame 308, a first plastic plate 203 is pushed back by the valve ball structure, and by using the movable connection between the hollow tube 319 and the third metal rod 320, a first plastic plate 203 is forced to retract a certain distance. As the downward movement continues, the conical pressing head 309 can continuously apply a downward pressure to the grooved solid plate 303 through the pressure-receiving frame 308. By using the second sliding sleeve limiting part 302 and the movable connection between the second metal rod 315 and the grooved solid plate 303, the pressure-bearing joint 306 is driven to move downward synchronously. The pressure is applied from the pressure-bearing joint 306 to the outer annular plate 322, forcing a first plastic plate 203 in the second locking ring sleeve 205 to press one end of the valve ball again. Combining the downward pressure and the extrusion of the valve ball structure, equal-range concave depressions will appear in the middle of both first plastic plates 203. When the third metal rod 320 is completely released, the two formed concave bodies are basically in a closed state. At this time, the valve ball is fully placed between the two concave bodies;

[0042] In the grinding stage, after the concave body is formed, the grinding blocks 206 evenly installed in the first plastic plate 203 are evenly distributed on the outer wall of the valve ball. By using the structural protrusions, the valve ball can be prevented from contacting the material of the first plastic plate 203 in the constructed concave body. In the material stage, the servo motor 213 is started. After the power is converted by the speed reducer 212, the low-speed and high-torque power is continuously transmitted and acts on the driving roller 215. Through the traction of the traction belt 216, the lower-level transmission of power is completed. By using the physical properties of the roller bearing 220, the upper air cavity 204 and its connected components are driven to rotate slowly. At this time, the valve ball of the concave body also rotates with the structure and rolls irregularly, and its outer wall can be repeatedly ground by the evenly distributed grinding blocks 206.

[0043] In the reset stage, when the inner shaft of the pneumatic telescopic part 217 extends outwards, with the assistance of the above structure, the conical pressing head 309 gradually disengages from the pressure-bearing frame 308. The slotted solid plate 303 that loses the external pressure covering will quickly reset under the reaction force of the second active spring 316. Immediately afterwards, the pressure-bearing joint 306 gradually disengages from the outer annular plate 322 and rises a certain height. Then the motor assembly 324 is started to drive the pressure-bearing joint 306 to turn independently. The first plastic plate 203 in the second locking ring sleeve 205 can quickly reset under the reaction force of the third active spring 323. Losing the external pressure covering, the concave body gradually disappears, and the valve ball inside is fully exposed. When the upper air cavity 204 returns to its original position, the energy supply of the third active spring 323 is removed, and the reaction force provided by the first active spring 314 is used to assist the reset of the pressure-bearing joint 306.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A polishing and grinding device for a metal valve ball, comprising a set of spliced bottom plates (1), characterized in that: At the top of a group of the splicing bottom plates (1), there is a covering and polishing mechanism (2), and inside the covering and polishing mechanism (2), there is a grading and pressing mechanism (3). Covering and polishing mechanism (2), the covering and polishing mechanism (2) includes a lower cavity body (201) and an upper cavity body (204). Above the lower cavity body (201) and below the upper cavity body (204), there are first plastic plates (203). The two first plastic plates (203) are used for covering and locking the valve ball. On the surface of each first plastic plate (203), a plurality of grinding blocks (206) are equidistantly arranged. When the valve ball is placed between the two first plastic plates (203) and an external force is applied to one first plastic plate (203), the valve ball will push up the two first plastic plates (203) to form two concave surfaces in opposite directions, so that the valve ball can be wrapped into the two first plastic plates (203), and at the same time, the outer wall of the valve ball can fully contact with some of the grinding blocks (206). Grading and pressing mechanism (3), the grading and pressing mechanism (3) includes an outer annular plate (322) and two pressure-bearing joints (306). Above each pressure-bearing joint (306), there is an azimuth limiting part (307). Above each azimuth limiting part (307), there is a conical pressing head (309). When the two pressure-bearing joints (306) are located above the outer annular plate (322), the two conical pressing heads (309) start to contact the connected structure of the pressure-bearing joints (306). Continuously lower the conical pressing heads (309), and the generated downward pressure directly acts on the pressure-bearing joints (306), further forcing the outer annular plate (322) and its connected components to complete downward pressing, increasing the squeezing force of the two first plastic plates (203) on the valve ball.

2. The polishing and grinding device for the metal valve ball according to claim 1, characterized in that: On the inner wall of the lower cavity body (201), a first locking ring sleeve (202) is fixedly installed, and one first plastic plate (203) is fixed inside the first locking ring sleeve (202). At the bottom of the upper cavity body (204), there is a second locking ring sleeve (205), and one first plastic plate (203) is fixed inside the second locking ring sleeve (205).

3. The polishing and grinding device for the metal valve ball according to claim 1, wherein: On the top of the two splicing bottom plates (1), grooved longitudinal plates (208) are assembled. On the opposite sides of the two grooved longitudinal plates (208), a group of first sliding sleeve limiting parts (209) are installed. At one end of each group of first sliding sleeve limiting parts (209), a load-bearing bracket (210) is fixedly installed. Between the tops of the two load-bearing brackets (210), a group of combined brackets (211) are installed. Between the opposite sides of a group of combined brackets (211), a speed reducer (212) is installed. The power input end of the speed reducer (212) is fixedly connected to a servo motor (213).

4. The polishing and grinding device for the metal valve ball according to claim 1, characterized in that: The top of the upper cavity (204) is sealed with a cover (207). A driven roller (214) is fixedly installed at the center of the cover (207). The power output end of the speed reducer (212) is fixedly connected with a driving roller (215). A set of traction belts (216) is movably sleeved between the outer surfaces of the driven roller (214) and the driving roller (215).

5. The polishing and grinding device for the metal valve ball according to claim 3, wherein: A set of pneumatic telescopic members (217) is fixedly connected to the outer surface of each grooved vertical plate (208). A first connecting member (218) is fixedly sleeved between the shaft ends of each set of pneumatic telescopic members (217). Each first connecting member (218) is respectively connected to a corresponding load-bearing bracket (210). A hollow sleeve (219) is fixedly installed between the opposite sides of the two load-bearing brackets (210). A roller bearing (220) is connected to the inner surface of the hollow sleeve (219). The inner surface of the inner shaft of the roller bearing (220) is connected to the outer wall of the upper cavity (204).

6. The polishing and grinding device for the metal valve ball according to claim 1, wherein: A plurality of round holes are equidistantly formed in the interior of each first plastic plate (203), and a bushing (221) is installed in the interior of each round hole.

7. The polishing and grinding device for the metal valve ball according to claim 1, wherein: The hierarchical pressing mechanism (3) further includes two rectangular shell sleeves (301). A set of second sliding sleeve limiting members (302) is installed on the inner wall of each rectangular shell sleeve (301). A grooved solid plate (303) is fixedly installed between the opposite sides of each set of second sliding sleeve limiting members (302). A U-shaped groove (304) is formed at one end of each grooved solid plate (303). A cylindrical joint (305) is movably disposed in each U-shaped groove (304). Each cylindrical joint (305) is respectively connected to a corresponding pressure-bearing joint (306). Each orientation limiting member (307) is fixedly installed on the top of a corresponding grooved solid plate (303). A pressure-bearing frame (308) is installed on the top of each grooved solid plate (303). Each conical pressing head (309) is fixedly installed at the bottom of a corresponding load-bearing bracket (210). A motor assembly (324) is disposed outside each grooved solid plate (303). The output end of each motor assembly (324) is respectively connected to one end of a corresponding cylindrical joint (305).

8. The polishing and grinding device for the metal valve ball according to claim 7, wherein: A set of first metal rods (310) is inserted into the groove body of each grooved solid plate (303). A square seat (311) is movably sleeved between the outer surfaces of each set of first metal rods (310). A movable member (312) is fixedly installed at the bottom of each pressure-bearing joint (306) and the square seat (311). A traction rod (313) is installed between the outer surfaces of every two movable members (312).

9. The polishing and grinding device for the metal valve ball according to claim 8, wherein: A set of first active springs (314) are connected to the outer wall of each of the square seats (311). The first ends of each set of the first active springs (314) are respectively connected to the inner wall of the groove body of the corresponding grooved solid plate (303). A set of second metal rods (315) are inserted between the top and bottom of the inner wall of each rectangular shell sleeve (301). Each U-shaped groove (304) is respectively movably connected to a corresponding set of second metal rods (315). A set of second active springs (316) are connected to the bottom of each grooved solid plate (303). One end of each set of the second active springs (316) is respectively connected to the bottom of the inner wall of the rectangular shell sleeve (301).

10. The polishing and grinding device for the metal valve ball according to claim 1, wherein: A set of inner grooves (317) are formed inside the upper air cavity (204). A set of connectors (318) are fixedly installed at the bottom of the upper air cavity (204). A set of hollow tubes (319) are fixedly installed inside each of the connectors (318). A third metal rod (320) is movably inserted inside each of the hollow tubes (319). The bottom of each set of the third metal rods (320) is connected to the top of the second locking ring sleeve (205). A second connecting member (321) is fixedly installed between the tops of each set of the third metal rods (320). An outer annular plate (322) is fixedly installed between the outer surfaces of the plurality of second connecting members (321). A set of third active springs (323) are fixedly installed between each of the connectors (318) and the second connecting member (321).

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