Outer surface grinding device for ball valve ball body production

Abstract

The invention relates to the technical field of ball body polishing, in particular to an outer surface polishing device for ball valve ball body production, which comprises a base and L-shaped seats symmetrically and fixedly connected to the base, an electric lifting frame is mounted between the L-shaped seats, and the outer surface polishing device further comprises a fixing assembly arranged on the base and used for fixing a ball body. A ball is clamped and fixed through a clamping plate, then an electric lifting frame is started to move downwards, the electric lifting frame drives a grinding belt to move downwards through a guide roller to make contact with the surface of the ball, the guide roller continues to move downwards to push the grinding belt to be tightly attached to the semispherical surface of the ball, and then a driving motor is started to drive the guide roller to rotate; the guide roller drives the grinding belt to rotate, the grinding belt grinds the surface of the sphere, meanwhile, the electric rotating shaft is started to enable the clamping plate to drive the sphere to rotate, the sphere rotates so that the surface can be comprehensively ground, in this way, the grinding belt makes contact with the hemispherical surface of the sphere, the grinding area is larger, continuous movement is not needed, and therefore the grinding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sphere grinding, and particularly to an outer surface grinding device for the production of ball valve spheres. Background Art

[0002] A ball valve is a valve in which the closing member (sphere) is driven by a valve stem and rotates around the axis of the ball valve. During the production of a ball valve, as the closing member inside the ball valve, the sphere needs to consider the assembly accuracy of the sphere and the sealing performance during operation, and the surface of the sphere needs to be ground.

[0003] Chinese Patent with Publication No. CN118752351A discloses an outer surface grinding device for the production of ball valve spheres, including a rotating mechanism, a grinding assembly, a spatial swing mechanism, and a carrying mechanism. The rotating mechanism includes a rotating main body and a limiting accessory. The first driving part in the rotating main body is in transmission connection with the rotating housing. There are two cross-connected arc-shaped guide rails between the limiting housing in the limiting accessory and the rotating housing. The grinding assembly includes a driving component and a grinding part. The second driving part in the driving component is in transmission connection with the driving gear ring. The driven gear ring is in transmission connection with the driving gear ring. Open slots are provided on the surfaces of the driving gear ring and the driven gear ring. The disc seat in the grinding part is located in the open slot. The fixing column is slidably connected in the arc-shaped guide rail. The diamond block is located on the side of the arc-shaped guide rail away from the grinding disc. Although the above patent can grind the surface of the sphere through the grinding disc, the grinding disc needs to move continuously to comprehensively grind the surface of the sphere. Moreover, the larger the sphere, the longer the stroke the grinding disc needs to move to comprehensively grind the surface of the sphere. Especially when the sphere size is large, the grinding disc needs to move continuously for a longer stroke to achieve comprehensive grinding of the surface of the sphere, increasing the grinding time and cost and resulting in a reduction in grinding efficiency.

[0004] The present invention aims to solve the problems existing in the above patent. For this purpose, an outer surface grinding device for the production of ball valve spheres is proposed, which can use a grinding belt to contact the hemispherical surface of the sphere for comprehensive grinding, without continuous movement, and improve the grinding efficiency. Summary of the Invention

[0005] In order to overcome the drawback that the larger the sphere, the longer the stroke the grinding disc needs to move to comprehensively grind the surface of the sphere. Especially when the sphere size is large, the grinding disc needs to move continuously for a longer stroke to achieve comprehensive grinding of the surface of the sphere, increasing the grinding time and cost and resulting in a reduction in grinding efficiency, the present invention provides an outer surface grinding device for the production of ball valve spheres, which can use a grinding belt to contact the hemispherical surface of the sphere for comprehensive grinding, without continuous movement, and improve the grinding efficiency.

[0006] The present invention is achieved through the following technical solutions: The cam is provided with a plurality of guide rollers, and a plurality of guide rollers are provided between the guide rollers and the guide rollers, and a plurality of guide rollers are provided between the guide rollers and the guide rollers.

[0007] Further explanation, the clamping assembly includes an electric push rod symmetrically fixed to the movable frame, the telescopic rod end of the electric push rod is fixed to a guide seat, the guide seat is slidably connected to the return plate located on both sides of the grinding belt, the return plate is rotatably connected to the clamping roller at evenly spaced intervals, which is used to press the edge of the grinding belt against the surface of the sphere, and the guide seat is rotatably connected to a screw threadedly connected to the return plate, which is used to drive the return plate to move, and the end of the screw is fixed to a drive frame.

[0008] Further explanation, the fixing component includes an electric skateboard arranged on the base, the electric skateboard is rotatably connected to the electric turntable, a hollow tube is fixed to the center position of the electric turntable, the end of the hollow tube is rotatably connected to the clamping plate at evenly spaced intervals along the circumference, which is used to clamp the sphere, a movable ring is circumferentially slidably connected to the hollow tube, a connecting rod is rotatably connected between the movable ring and the clamping plate, and a driving component is provided on the inside of the hollow tube to drive the movable ring to move.

[0009] Further explanation, the drive assembly includes a drive plate slidably connected to the inner side of the hollow tube, the drive plate is fixedly connected to the inner side of the movable ring, and is used to drive the movable ring to move. A cylinder is fixedly connected to the inner side of the hollow tube, and the end of the telescopic rod of the cylinder is fixedly connected to the drive plate.

[0010] Further explanation, the support assembly includes a fixed frame fixedly connected between the base and the L-shaped seat, a sliding frame symmetrically and slidingly connected to the fixed frame for tilting, a support roller rotatably connected to the sliding frame for supporting and guiding the sphere, a connecting plate fixed to the sliding frame, an L-shaped plate symmetrically fixed to the fixed frame, a screw threadedly connected to the connecting plate rotatably connected between the L-shaped plate and the fixed frame, and a rotating assembly provided between the screw and the base for driving the screw to rotate.

[0011] Further description: The rotating assembly includes a rotating shaft symmetrically and rotatably connected to the top of the base. The rotating shaft is inclined, parallel to the lead screw, and the rotating shaft and the lead screw are connected by a synchronous belt assembly. A bevel gear is fixedly sleeved on the top of the rotating shaft, and a stepping motor is installed on the top of the base. A bevel gear disk meshing with the bevel gear is fixedly sleeved on the output shaft of the stepping motor.

[0012] Further description: The outer surface grinding device for producing a ball valve sphere further includes a positioning assembly. The positioning assembly includes a support frame fixedly connected to the top of the base. A guide rod is fixedly connected to the inner side of the support frame. Symmetrically sliding sleeves are sleeved on the guide rod and are slidably connected to the inner side of the support frame for positioning the sphere. A rack is fixedly connected to the bottom of the positioning plate, and the front and rear racks are arranged staggeredly. A servo motor is installed in the middle of the support frame, and a spur gear meshing with the rack is fixedly sleeved on the output shaft of the servo motor.

[0013] Further description: The outer surface grinding device for producing a ball valve sphere further includes a mounting plate fixedly connected to the inner side of the electric lifting frame. A brush in contact with the outer side of the grinding belt is fixedly connected to the mounting plate for removing the debris attached to the grinding belt.

[0014] The beneficial effects of the present invention are as follows: 1. The sphere is clamped and fixed by the clamping plate. Then, the electric lifting frame is started to move downward. The electric lifting frame drives the grinding belt to move downward through the guide roller to contact the surface of the sphere, and the guide roller continues to move downward to push the grinding belt against the hemispherical surface of the sphere. Then, the driving motor is started to drive the guide roller to rotate, and the guide roller drives the grinding belt to rotate, and the grinding belt grinds the surface of the sphere. At the same time, the electric rotating shaft is started to make the clamping plate drive the sphere to rotate, and the rotation of the sphere enables the surface to be comprehensively ground. In this way, by contacting the grinding belt with the hemispherical surface of the sphere, the grinding area is larger, so there is no need to move continuously, thereby improving the grinding efficiency.

[0015] 2. Under the action of the positioning plate, whenever the sphere is placed between the left and right support rollers, the positioning plate can center and position the sphere, making the sphere correspond exactly to the grinding belt, preventing the front and rear positions of the sphere from deviating and affecting the precise contact with the grinding belt, thereby ensuring that the sphere is precisely ground by the grinding belt.

[0016] 3. Under the action of the brush, whenever the grinding belt grinds the surface of the sphere, the generated debris will adhere to the surface of the sphere. The brush can remove the debris attached to the grinding belt, preventing the debris from adhering to the grinding belt and affecting the subsequent use effect, thereby improving the use effect of the grinding belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the electric lifting frame and the guiding frame of the present invention.

[0019] Figure 3 This is a three-dimensional structural schematic diagram of the movable frame and the tensioning roller of the present invention.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the pressing component of the present invention.

[0021] Figure 5 This is a three-dimensional structural schematic diagram of the fixing component of the present invention.

[0022] Figure 6 This is a three-dimensional structural schematic diagram of the movable ring, the connecting rod and the clamping plate of the present invention.

[0023] Figure 7 This is a three-dimensional structural schematic diagram of the supporting component of the present invention.

[0024] Figure 8 This is a three-dimensional structural schematic diagram of the positioning component of the present invention.

[0025] Figure 9 This is a sectional structural schematic diagram of the support frame of the present invention.

[0026] Figure 10 This is a three-dimensional structural schematic diagram of the mounting plate and the brush of the present invention.

[0027] Names and serial numbers of components in the figure: 1 - base, 2 - L-shaped seat, 3 - electric lifting frame, 4 - guiding roller, 5 - grinding belt, 6 - driving motor, 7 - guiding frame, 8 - vertical rod, 9 - movable frame, 10 - tensioning roller, 11 - connecting spring, 12 - electric push rod, 121 - guiding seat, 122 - return-shaped plate, 123 - pressing roller, 124 - screw rod, 125 - driving frame, 13 - electric sliding plate, 131 - electric turntable, 132 - hollow tube, 133 - movable ring, 134 - connecting rod, 135 - clamping plate, 136 - driving plate, 137 - cylinder, 14 - fixing frame, 141 - sliding frame, 1411 - connecting plate, 142 - supporting roller, 143 - L-shaped plate, 144 - lead screw, 145 - rotating shaft, 146 - bevel gear, 147 - stepping motor, 148 - bevel gear disc, 15 - support frame, 151 - positioning plate, 152 - guiding rod, 153 - rack, 154 - spur gear, 155 - servo motor, 16 - mounting plate, 17 - brush. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners, but the protection scope and application scope of the present invention are not limited.

[0029] Example: An outer surface grinding device for the production of a ball valve sphere, please refer to Figures 1 - 7As shown, it includes a base 1 and an L-shaped seat 2 symmetrically fixed to the base 1 on the left and right sides, an electric lifting frame 3 is installed between the left and right L-shaped seats 2, and also includes a guide roller 4, a grinding belt 5, a drive motor 6, a guide frame 7, a vertical rod 8, a movable frame 9, a tensioning roller 10, a connecting spring 11, a clamping component, a fixing component and a supporting component. A fixing component is provided on the base 1. When the fixing component is in operation, the fixing component can fix the sphere. Four guide rollers 4 are evenly spaced and connected to the rotation of the electric lifting frame 3. A grinding belt 5 is wound between the four guide rollers 4. A drive motor 6 is installed on the top right side of the electric lifting frame 3. The output shaft end of the drive motor 6 is connected to the front side of the upper right guide roller 4 through a synchronous belt assembly. The electric lifting The top of the frame 3 is symmetrically fixed with a guide frame 7, and the inner sides of the front and rear guide frames 7 are fixed with vertical rods 8. A movable frame 9 is slidably mounted between the front and rear vertical rods 8. A connecting spring 11 is connected between the top of the movable frame 9 and the top of the front and rear guide frames 7. The bottom of the movable frame 9 is rotatably connected to a tensioning roller 10, which contacts the top of the grinding belt 5. The tensioning roller 10 is used to apply pressure to the grinding belt 5 so that the grinding belt 5 contacts the hemispherical surface of the sphere for comprehensive grinding. A clamping assembly is provided on the movable frame 9. When the clamping assembly is in operation, the clamping assembly can compress and guide the edge of the grinding belt 5. A support assembly is provided between the base 1 and the L-shaped seat 2. When the support assembly is in operation, the support assembly can support and guide the sphere.

[0030] See also Figure 4 As shown, the clamping assembly includes an electric push rod 12, a guide seat 121, a return plate 122, a clamping roller 123, a screw 124 and a driving frame 125. The electric push rod 12 is symmetrically fixed to the front and rear of the movable frame 9. The ends of the telescopic rods of the electric push rods 12 on the front and rear sides are fixed to the guide seat 121. The guide seats 121 on the front and rear sides are slidably connected to the return plates 122. The return plates 122 are located on the front and rear sides of the grinding belt 5. The front and rear return plates 122 are evenly spaced and connected to each other on the side close to each other. There are three pressing rollers 123. When the pressing rollers 123 move downward, the pressing rollers 123 can press the edge of the grinding belt 5 against the surface of the sphere. The middle parts of the sides of the front and rear guide seats 121 that are away from each other are rotatably connected with screws 124. The front and rear screws 124 are respectively threadedly connected to the middle parts of the front and rear return plates 122. When the screws 124 rotate, the screws 124 can drive the return plates 122 to move forward and backward. The ends of the front and rear screws 124 that are away from each other are fixed with drive frames 125.

[0031] See also Figure 5 and Figure 6As shown, the fixing assembly includes an electric slide 13, an electric turntable 131, a hollow tube 132, a movable ring 133, a connecting rod 134, a clamping plate 135 and a driving assembly. The electric slide 13 is provided on the top of the base 1. The upper part of the electric slide 13 is rotatably connected to the electric turntable 131. The middle part of the front side of the electric turntable 131 is fixed with a hollow tube 132. The front end of the hollow tube 132 is rotatably connected with eight clamping plates 135 at even intervals along the circumferential direction. When the clamping plates 135 swing outward and contact the inner wall of the sphere, the clamping plates 135 can clamp the sphere firmly. The upper part of the hollow tube 132 is circumferentially slidably connected with a movable ring 133. The movable ring 133 is fixed with a movable ring 134. A connecting rod 134 is rotatably connected between the circumference 33 and the rear side of the outer side surfaces of the eight clamping plates 135. A driving assembly is provided on the inner side of the hollow tube 132. When the driving assembly is in operation, the driving assembly can drive the movable ring 133 to move; the driving assembly includes a driving plate 136 and a cylinder 137. The driving plate 136 is slidingly connected to the inner side of the hollow tube 132. The driving plate 136 is fixedly connected to the inner side of the movable ring 133. When the driving plate 136 moves, the driving plate 136 can drive the movable ring 133 to move. A cylinder 137 is fixedly connected to the inner rear side of the hollow tube 132, and the end of the telescopic rod of the cylinder 137 is fixedly connected to the rear side of the driving plate 136.

[0032] See also Figure 7 As shown, the support assembly includes a fixed frame 14, a sliding frame 141, a connecting plate 1411, a support roller 142, an L-shaped plate 143, a screw rod 144 and a rotating assembly. The fixed frame 14 is fixedly connected between the top of the base 1 and the inner bottom of the left and right L-shaped seats 2. The sliding frames 141 on the fixed frame 14 are symmetrically and slidingly connected. The sliding frames 141 on the left and right sides are inclined. The upper parts of the sliding frames 141 on the left and right sides are rotatably connected to the support rollers 142, and the support rollers 142 can support and guide the sphere. The upper parts of the sliding frames 141 on the left and right sides are fixedly connected to the connecting plates 1411. The upper part of the front side of the fixed frame 14 is symmetrically fixed with the L-shaped plates 143. The upper parts of the L-shaped plates 143 on the left and right sides and the fixed frame 14 are rotatably connected with screw rods 144. The screw rods 144 and the front sides of the connecting plates 1411 Threaded connection, a rotating assembly is provided between the screw rod 144 and the base 1, and when the rotating assembly is in operation, the rotating assembly can drive the screw rod 144 to rotate; the rotating assembly includes a rotating shaft 145, a bevel gear 146, a stepping motor 147 and a bevel gear disc 148. The top front side of the base 1 is symmetrically rotated with the rotating shaft 145 on the left and right sides. The rotating shaft 145 is tilted, and the rotating shaft 145 and the screw rod 144 are in a parallel state. The left and right rotating shafts 145 are respectively connected to the lower parts of the left and right screw rods 144 through a synchronous belt assembly. The top ends of the left and right rotating shafts 145 are fixedly covered with bevel gears 146, and a stepping motor 147 is vertically installed on the top front side of the base 1. A bevel gear disc 148 is fixedly covered on the output shaft of the stepping motor 147, and the bevel gear disc 148 is engaged with the bevel gears 146 on the left and right sides.

[0033] First, start the stepper motor 147 to rotate forward and backward alternately. The stepper motor 147 drives the bevel gear disk 148 to rotate forward and backward alternately. The bevel gear disk 148 drives the bevel gears 146 on both the left and right sides to rotate forward and backward alternately. The bevel gears 146 drive the rotating shaft 145 to rotate forward and backward alternately. The rotating shaft 145 drives the lead screw 144 to rotate forward and backward alternately through the synchronous belt assembly. The lead screw 144 drives the connecting plate 1411 to move obliquely. The connecting plate 1411 drives the sliding frame 141 to move obliquely. The sliding frame 141 drives the support roller 142 to move obliquely. When the support roller 142 moves obliquely to a suitable position for supporting the sphere, turn off the stepper motor 147. The bevel gear disk 148 stops driving the bevel gear 146 to rotate. The sliding frame 141 stops driving the support roller 142 to move obliquely. Then the sphere can be placed between the support rollers 142 on both the left and right sides. At this time, the central hole of the sphere corresponds exactly to the hollow tube 132. Then start the electric skateboard 13. The forward movement of the electric skateboard 13 drives the electric turntable 131 to move forward. The forward movement of the electric turntable 131 drives the hollow tube 132 to move forward. The forward movement of the hollow tube 132 drives the clamping plate 135 to move forward into the central hole of the sphere. Turn off the electric skateboard 13. The clamping plate 135 stops moving forward. Then start the cylinder 137. The shortening of the telescopic rod of the cylinder 137 drives the driving plate 136 to move backward. The backward movement of the driving plate 136 drives the movable ring 133 to move backward. The backward movement of the movable ring 133 drives the clamping plate 135 to swing outward through the connecting rod 134. When the clamping plate 135 swings outward and contacts the inner wall of the sphere, the clamping plate 135 clamps and fixes the sphere. Turn off the cylinder 137. The driving plate 136 stops driving the movable ring 133 to move backward. Then start the electric lifting frame 3 to move downward, driving the guide roller 4 to move downward. The downward movement of the guide roller 4 drives the grinding belt 5 to move downward. At the same time, the downward movement of the electric lifting frame 3 also drives the guide frame 7 to move downward. The downward movement of the guide frame 7 drives the movable frame 9 and the electric push rod 12 to move downward. The movable frame 9 drives the tensioning roller 10 to move downward. The tensioning roller 10 moves downward synchronously with the grinding belt 5. The electric push rod 12 drives the loop-shaped plate 122 to move downward through the guide seat 121. The loop-shaped plate 122 drives the pressing roller 123 to move downward. The pressing roller 123 moves downward synchronously with the grinding belt 5. When the grinding belt 5 moves downward and contacts the surface of the sphere, the position where the grinding belt 5 contacts the sphere stops moving downward. The guide roller 4 continues to move downward, driving the part of the grinding belt 5 that does not contact the sphere to move downward, so that the grinding belt 5 gradually presses on the hemispherical surface of the sphere. At the same time, due to the contact between the grinding belt 5 and the hemispherical surface of the sphere, the guide roller 4 continues to move downward to tighten the upper part of the grinding belt 5. The tightened grinding belt 5 drives the tensioning roller 10 to move upward. The upward movement of the tensioning roller 10 drives the movable frame 9 to move upward. The connecting spring 11 is compressed. Turn off the electric lifting frame 3. The guide roller 4 stops driving the grinding belt 5 to continue moving downward. Then the driving frame 125 can be twisted to rotate. The driving frame 125 drives the screw 124 to rotate. The rotation of the screw 124 drives the loop-shaped plates 122 on both the front and back sides to move inward.The return plate 122 drives the front and rear pressing rollers 123 to move inward. When the pressing rollers 123 move inward to a position suitable for pressing the edge of the grinding belt 5 against the surface of the sphere, the twisting drive frame 125 is stopped, and the screw 124 stops driving the return plate 122 to move. The return plate 122 drives the pressing rollers 123 to move inward, and then the electric push rod 12 is started. The telescopic rod of the electric push rod 12 extends and drives the guide seat 121 to move downward. The guide seat 121 drives the return plate 122 to move downward. The return plate 122 drives the pressing rollers 123 to move downward. The pressing rollers 123 move downward to press the lower edge of the grinding belt 5 against the surface of the sphere, which makes the grinding belt 5 more fully contact the hemispherical surface of the sphere, and the electric push rod is closed. 12, the drive motor 6 can be started, and the drive motor 6 drives the guide roller 4 on the upper right side to rotate through the synchronous belt assembly. The guide roller 4 on the upper right side drives the grinding belt 5 to rotate forward through the remaining guide rollers 4. The grinding belt 5 rotates forward to grind the surface of the sphere. Since the grinding belt 5 is in contact with the hemispherical surface of the sphere, the grinding belt 5 can grind a larger area of the surface of the sphere. Then the electric turntable 131 is started to rotate, and the electric turntable 131 drives the hollow tube 132 to rotate. The hollow tube 132 drives the clamping plate 135 to rotate. The rotation of the clamping plate 135 drives the sphere to rotate. The rotation of the sphere causes the surface to be fully polished by the grinding belt 5. When the grinding of the sphere surface is completed, the electric turntable 131 is turned off, and the clamping plate 135 stops driving the sphere The body rotates, and then the drive motor 6 is turned off. The guide roller 4 stops driving the grinding belt 5 to rotate, and then the electric push rod 12 is started to drive the guide seat 121 to move upward. The guide seat 121 drives the return plate 122 to move upward. The return plate 122 drives the guide roller 4 to move upward and reset and disengage from the edge of the grinding belt 5. The electric push rod 12 is turned off, and then the electric lifting frame 3 is started to move upward and drive the grinding belt 5 to move upward and reset through the guide roller 4. The grinding belt 5 is reset and disengaged from the ball. Due to the action of the connecting spring 11, the movable frame 9 moves downward and drives the pressure roller 123 to move downward. The pressure roller 123 applies pressure to the grinding belt 5, so that the grinding belt 5 is tightened. The electric lifting frame 3 is turned off, and the cylinder 137 is started to drive the driving The plate 136 moves forward and resets, and the driving plate 136 drives the movable ring 133 to move forward. The movable ring 133 drives the clamping plate 135 to swing inward and reset through the connecting rod 134. The clamping plate 135 resets and disengages from the inner wall of the sphere. The electric slide 13 is then started to move backward and drive the electric turntable 131 to move backward and reset. The electric turntable 131 drives the clamping plate 135 to move backward and reset through the hollow tube 132. The clamping plate 135 resets and is outside the sphere. The sphere with polished surface can be removed from the support roller 142. This process is repeated to continuously polish the surface of the sphere. Moreover, since the polishing belt 5 is in contact with the hemispherical surface of the sphere, the polishing area is larger, and there is no need for continuous movement, thereby improving the polishing efficiency.

[0034] See also Figure 8 and Figure 9As shown, the outer surface polishing device for ball valve ball production also includes a positioning assembly installed on the base 1, the positioning assembly includes a support frame 15, a positioning plate 151, a guide rod 152, a rack 153, a spur gear 154 and a servo motor 155. The support frame 15 is fixedly connected to the middle of the top of the base 1, and the guide rod 152 is fixedly connected to the upper inner part of the support frame 15. The positioning plate 151 is symmetrically slidably mounted on the guide rod 152. The positioning plate 151 is slidably connected to the inner side of the support frame 15. When the positioning plate 151 moves inward and contacts the ball, the positioning plate 151 can position the front and rear sides of the ball. The bottom of the front and rear positioning plates 151 are fixedly connected to the racks 153. The front and rear racks 153 are staggered. A servo motor 155 is vertically installed in the middle of the support frame 15. A spur gear 154 is fixedly mounted on the output shaft of the servo motor 155, and the spur gear 154 is meshed with the front and rear racks 153.

[0035] When the ball is placed between the left and right support rollers 142, the ball is between the front and rear positioning plates 151, and the servo motor 155 is started to drive the spur gear 154 to rotate forward. The spur gear 154 rotates forward to drive the front and rear racks 153 to move inward. The racks 153 drive the front and rear positioning plates 151 to move inward. When the front and rear positioning plates 151 move inward and contact the ball, the front and rear positioning plates 151 center the ball so that the ball is aligned with the grinding belt 5. Then, the servo motor 155 is started again to drive the spur gear 154 to rotate backward. The spur gear 154 rotates backward to drive the front and rear racks 153 to move outward and reset. The racks 153 drive the front and rear positioning plates 151 to move outward and reset. The positioning plates 151 reset and disengage from the ball. The servo motor 155 is turned off, and the ball is clamped and fixed to complete the surface grinding. In this way, the deviation of the front and rear position of the ball can be prevented from affecting the precise contact with the grinding belt 5, thereby ensuring that the ball is accurately polished by the grinding belt 5.

[0036] See also Figure 10 As shown, the outer surface grinding device for ball valve ball production also includes a mounting plate 16 and a brush 17. The mounting plate 16 is fixedly connected to the right side of the top of the electric lifting frame 3, and the brush 17 is fixedly connected to the left side of the mounting plate 16. The brush 17 is in contact with the outer side of the grinding belt 5. When the grinding belt 5 rotates, the brush 17 can remove the debris attached to the grinding belt 5.

[0037] As the grinding belt 5 rotates to grind the surface of the sphere, some debris may adhere to the grinding belt 5. The brush 17 can remove the debris from the grinding belt 5, and the grinding belt 5 can continue to grind the surface of the sphere after the debris is removed. This prevents the grinding belt 5 from being attached to debris and affecting subsequent use, thereby improving the use effect of the grinding belt 5.

[0038] The above has introduced this application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. An outer surface grinding device for producing a ball valve sphere, comprising a base (1) and L-shaped seats (2) symmetrically fixed on the base (1), and an electric lifting frame (3) is installed between the L-shaped seats (2), characterized in that, The electric lifting frame (3) further comprises a fixing assembly arranged on the base (1) for fixing the sphere, guide rollers (4) are evenly spaced and connected to each other in a rotating manner, a grinding belt (5) is wound between the guide rollers (4), a driving motor (6) is installed on the electric lifting frame (3), an output shaft end of the driving motor (6) is connected to one of the guide rollers (4) via a synchronous belt assembly, a guide frame (7) is symmetrically fixed to the inner side of the electric lifting frame (3), a vertical rod (8) is fixed to the inner side of the guide frame (7), and a sliding groove (5) is formed between the vertical rods (8). The movable suit comprises a movable frame (9), a connecting spring (11) is connected between the movable frame (9) and the guide frame (7), a tensioning roller (10) is rotatably connected to the bottom of the movable frame (9) and in contact with the top of the grinding belt (5), and is used to apply pressure to the grinding belt (5) so that the grinding belt (5) contacts the hemispherical surface of the sphere for comprehensive grinding, a pressing component is provided on the movable frame (9), and is used to press and guide the edge of the grinding belt (5), and a supporting component is provided between the base (1) and the L-shaped seat (2), and is used to support and guide the sphere.

2. The outer surface grinding device for producing a ball valve sphere according to claim 1, wherein, The clamping assembly includes an electric push rod (12) symmetrically fixed to the movable frame (9), the end of the telescopic rod of the electric push rod (12) is fixed to a guide seat (121), and the guide seat (121) is slidably connected to the return plate (122) located on both sides of the grinding belt (5), and the return plate (122) is evenly spaced and rotatably connected to the clamping roller (123) for pressing the edge of the grinding belt (5) against the surface of the sphere, and the guide seat (121) is rotatably connected to a screw (124) threadedly connected to the return plate (122) for driving the return plate (122) to move, and the end of the screw (124) is fixed to a driving frame (125).

3. The outer surface grinding device for a ball valve sphere production according to claim 2, characterized in that, The fixing assembly includes an electric slide (13) arranged on the base (1), the electric slide (13) is rotatably connected to an electric turntable (131), a hollow tube (132) is fixedly connected to the center position of the electric turntable (131), the end of the hollow tube (132) is rotatably connected to a clamping plate (135) at even intervals along the circumferential direction, and is used to clamp and fix the sphere, a movable ring (133) is slidably connected to the hollow tube (132) along the circumferential direction, a connecting rod (134) is rotatably connected between the movable ring (133) and the clamping plate (135) in the circumferential direction, and a driving assembly is provided inside the hollow tube (132) for driving the movable ring (133) to move.

4. An outer surface grinding device for producing a ball valve ball according to claim 3, characterized in that, The driving assembly includes a driving plate (136) slidably connected to the inner side of the hollow tube (132), the driving plate (136) is fixedly connected to the inner side of the movable ring (133), and is used to drive the movable ring (133) to move. A cylinder (137) is fixedly connected to the inner side of the hollow tube (132), and the end of the telescopic rod of the cylinder (137) is fixedly connected to the driving plate (136).

5. An outer surface grinding device for producing a ball valve sphere according to claim 4, characterized in that, The support assembly includes a fixed frame (14) fixedly connected between the base (1) and the L-shaped seat (2), a sliding frame (141) symmetrically and slidably connected to the fixed frame (14) for tilting, a support roller (142) rotatably connected to the sliding frame (141) for supporting and guiding the sphere, a connecting plate (1411) fixedly connected to the sliding frame (141), an L-shaped plate (143) symmetrically fixedly connected to the fixed frame (14), a screw rod (144) threadedly connected to the connecting plate (1411) rotatably connected between the L-shaped plate (143) and the fixed frame (14), and a rotating assembly is provided between the screw rod (144) and the base (1) for driving the screw rod (144) to rotate.

6. The outer surface grinding device for producing a ball valve sphere according to claim 5, characterized in that, The rotating assembly includes a rotating shaft (145) symmetrically connected to the top of the base (1), the rotating shaft (145) is tilted, the rotating shaft (145) and the screw rod (144) are in a parallel state, the rotating shaft (145) and the screw rod (144) are connected by a synchronous belt assembly, the top of the rotating shaft (145) is fixedly sleeved with a bevel gear (146), the top of the base (1) is installed with a stepper motor (147), and the output shaft of the stepper motor (147) is fixedly sleeved with a bevel gear disk (148) meshing with the bevel gear (146).

7. An outer surface grinding device for producing a ball valve sphere according to claim 6, characterized in that, The outer surface polishing device for ball valve ball production also includes a positioning assembly, which includes a support frame (15) fixed to the top of the base (1), a guide rod (152) fixed to the inner side of the support frame (15), a positioning plate (151) symmetrically slidably mounted on the guide rod (152) and slidably connected to the inner side of the support frame (15), and used for positioning the ball, a rack (153) fixed to the bottom of the positioning plate (151), and the racks (153) on the front and rear sides are staggered, a servo motor (155) is installed in the middle of the support frame (15), and a spur gear (154) meshing with the rack (153) is fixedly mounted on the output shaft of the servo motor (155).

8. An outer surface grinding device for producing a ball valve sphere according to claim 7, characterized in that, The outer surface grinding device for ball valve ball production also includes a mounting plate (16) fixed to the inner side of the electric lifting frame (3), and a brush (17) fixed to the mounting plate (16) that contacts the outer side of the grinding belt (5) for removing debris attached to the grinding belt (5).

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