Ball milling mechanism of full-automatic planetary ball mill

Abstract

The utility model provides a ball-milling mechanism of a full-automatic planetary ball mill, and relates to a planetary ball mill, which comprises a rotating component provided with a driving shaft and a planetary wheel shaft, and a ball-milling tank component comprising a ball-milling tank fixedly arranged at the upper end of the planetary wheel shaft; the power assembly is in transmission connection with the driving shaft; the position detection assembly comprises a detection unit, a detected unit and a central unit, the detection unit is arranged on the rotating assembly, the detected unit is used for being arranged on a feeding mechanism, and the detection unit sends a confirmation signal to the detected unit; the detected unit receives a confirmation signal and transmits a feedback signal to the central unit, the central unit receives the feedback signal and transmits an adjusting signal to the power assembly, after the position detection assembly confirms that the position is aligned, the signal is transmitted to the power assembly, the power assembly stops power output, the ball milling tank stops moving, and the ball milling tank stops moving. And the feeding port is aligned with the ball milling tank.

Description

Technical Field

[0001] This utility model relates to planetary ball mills, and more particularly to a ball milling mechanism for a fully automatic planetary ball mill. Background Technology

[0002] Ball mills are commonly used ball milling equipment. During ball milling, the grinding balls roll under the action of the ball milling jar (210) to grind the material in the ball milling jar (210) and achieve the purpose of crushing the material.

[0003] Currently, to improve the grinding efficiency of ball mills, multiple grinding jars (210) are typically used simultaneously for grinding. The grinding jars (210) rotate to complete the grinding process. However, since the grinding jars (210) only rotate around their own axis, the grinding effect is poor, making it difficult to achieve the required particle size in a short time. To pursue better grinding results, existing ball mills, in addition to the rotation of the grinding jars (210), also cause several grinding jars (210) to revolve around a central point, combining the rotational and revolving motions of the grinding jars (210) to improve the grinding effect.

[0004] However, ball mills for compound grinding are mostly used in laboratory conditions and are difficult to industrialize. The reason is that in laboratory conditions, the ball mill jar (210) is usually manually filled, while in industrial production, efficiency and automation are pursued. In order to achieve automation and improve efficiency, multiple ball mill jars (210) are often used to complete a large amount of grinding in one operation. At the same time, the feeding mechanism usually has the same number of feeding ports as the ball mill jar (210). Multiple feeding ports feed materials into the ball mill jar (210) at the same time to improve feeding efficiency.

[0005] Because the ball mill jar (210) revolves, it is difficult to ensure that the ball mill jar (210) is aligned with the feeding port after it stops, making it impossible to accurately feed materials into the ball mill jar (210).

[0006] For the reasons mentioned above, this application provides a ball milling mechanism for a fully automatic planetary ball mill, which can ensure that the ball milling tank (210) is aligned with the feeding port, avoid misalignment, and realize automated feeding. Utility Model Content

[0007] This utility model provides a ball milling mechanism for a fully automatic planetary ball mill, which aims to solve the problem of low feeding efficiency and difficulty in achieving automated feeding in ball mills with multiple ball tanks.

[0008] To achieve the above objectives, embodiments of this utility model provide a ball milling mechanism for a fully automatic planetary ball mill, comprising:

[0009] A rotating assembly includes an upper plate and a middle plate. A drive shaft passes through the center of the middle plate, and a sun gear is fixed to the upper end of the drive shaft. Several sets of transition gears and planetary gears are eccentrically arranged on the middle plate. The transition gears and planetary gears are rotatably mounted on the middle plate. The planetary gears are connected to the sun gear through the transition gears. The sun gear, transition gears, and planetary gears are helical gears. A planetary gear shaft is fixed on the planetary gear, and the upper end of the planetary gear shaft passes through the upper plate.

[0010] A grinding jar assembly, including a grinding jar, the grinding jar being fixedly disposed at the upper end of the planetary gear shaft;

[0011] A power assembly, which is connected to the drive shaft drive;

[0012] The position detection component includes a detection unit, a test unit, and a central unit. The detection unit is disposed on the upper plate, and the test unit is disposed on the feeding mechanism. The detection unit sends a confirmation signal to the test unit to determine whether the feeding port is aligned with the ball mill jar. The test unit receives the confirmation signal and sends a feedback signal to the central unit. The central unit receives the feedback signal and sends an adjustment signal to the power component.

[0013] Preferably, the power assembly includes a servo motor and a three-phase motor, the output end of the servo motor is drivenly connected to the input end of the three-phase motor, and the output end of the three-phase motor is drivenly connected to the drive shaft;

[0014] The servo motor receives the adjustment signal from the central unit.

[0015] Preferably, the power assembly further includes a reducer and an electromagnetic clutch, the output end of the servo motor is connected to the electromagnetic clutch via the reducer, and the output end of the electromagnetic clutch is connected to the input end of the three-phase motor.

[0016] Preferably, the power assembly further includes a bracket, the bracket including a middle plate and an upper plate located above the middle plate, the reducer is a servo right-angle reducer, the output end of the servo right-angle reducer is vertically disposed on the middle plate, and the output end of the servo right-angle reducer is provided with a first bearing and a second bearing, the first bearing and the second bearing are respectively fixed on the middle plate and the upper plate, the electromagnetic clutch is disposed on the upper plate, and the output end of the servo right-angle reducer is connected to the input end of the electromagnetic clutch;

[0017] The output end of the electromagnetic clutch is connected to the input end of the three-phase motor via a sprocket drive.

[0018] The output end of the servo motor is connected to the input end of the servo right-angle reducer.

[0019] Preferably, the output end of the electromagnetic clutch is provided with an output gear, the input end of the three-phase motor is provided with a driven gear, a chain for transmission is provided between the output gear and the driven gear, and a tensioner is also provided on the upper plate for adjusting the tension of the chain.

[0020] Preferably, the rotating assembly further includes a chassis and a base, the chassis being disposed on the upper surface of the base, the drive shaft passing through the upper surfaces of the chassis and the base, and the drive shaft being driven by the output sprocket of the three-phase motor below the upper surface of the base;

[0021] The transition gear is provided with a transition shaft, and the upper and lower ends of the transition shaft are rotatably connected to the middle plate and the upper plate through transition bearing shafts, respectively. The upper and lower ends of the planetary gear shaft are provided with planetary bearings, and the planetary gear shaft is rotatably connected to the middle plate and the upper plate through planetary bearings.

[0022] Preferably, the rotating assembly further includes a cylindrical body, and the upper plate, middle plate and bottom plate are disposed in the cylindrical body at intervals.

[0023] Preferably, the number of position detection components is the same as the number of grinding jars, and each position detection unit is located in the middle of adjacent grinding jars.

[0024] The above-mentioned solution of this utility model has the following beneficial effects:

[0025] In this application, a position detection component is used to detect the positional relationship between the feed inlet and the grinding jar. After the position detection component confirms that the position is aligned, it sends a signal to the power component, which then stops power output, and the grinding jar stops moving, ensuring that the feed inlet can feed material into the grinding jar. This application is applicable to situations where multiple grinding jars are grinding simultaneously, and improves the efficiency of feeding.

[0026] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0027] Figure 1 This is a first-view diagram of the present invention;

[0028] Figure 2 This is a second-view diagram of the present invention;

[0029] Figure 3 This is a schematic diagram of the transmission of the sun gear, intermediate gear, and planetary gears.

[0030] [Explanation of Labels in the Attached Image]

[0031] 100-Rotating assembly, 110-Upper plate, 120-Middle plate, 130-Drive shaft, 140-Sun gear, 150-Transition gear, 160-Planet gear, 170-Planet gear shaft, 180-Transition shaft, 190-Cylinder body

[0032] 200 - Grinding jar assembly, 210 - Grinding jar

[0033] 300-Power assembly, 310-Servo motor, 320-Three-phase motor, 321-Driven gear, 330-Reducer, 340-Electromagnetic clutch, 341-Output gear, 351-Middle plate, 352-Upper plate, 360-Tensioner. Detailed Implementation

[0034] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figure 1-3 As shown, an embodiment of this utility model provides a ball milling mechanism for a fully automatic planetary ball mill, including a rotating component 100, a ball milling jar assembly 200, a power component 300, and a position detection component. The rotating component 100 rotates under the drive of the power component 300. The ball milling jar assembly 200 is disposed on the rotating component 100, completing the revolution and rotation of the ball milling jar assembly 200. The position detection component detects whether the stopping position of the ball milling jar assembly 200 is directly opposite the feeding port.

[0036] Specifically, the rotating assembly 100 includes an upper plate 110 and a middle plate 120, with the upper plate 110 positioned above the middle plate 120. Both the upper plate 110 and the middle plate 120 are circular. A drive shaft 130 passes through the center of the middle plate 120, and a drive bearing is fitted onto the drive shaft 130. The drive shaft 130 is mounted on the middle plate 120 via the drive bearing, with its lower end located below the middle plate 120. A sun gear 140 is fixed to the upper end of the drive shaft 130. A transition gear 150 is also provided on the middle plate 120, rotating eccentrically on the middle plate 120 and meshing with the sun gear 140. Several planetary gears 160 are also provided on the middle plate 120, rotating eccentrically on the middle plate 120 and meshing with the transition gears 150. The sun gear 140, intermediate gear 150, and planet gear 160 are helical gears. A planet gear shaft 170 is fixed on the planet gear 160, and the upper end of the planet gear shaft 170 passes through the upper plate 110 and extends beyond the upper plate 110 by a certain distance.

[0037] The aforementioned grinding jar assembly 200 includes a grinding jar 210, which is fixedly disposed at the upper end of the planetary gear shaft 170.

[0038] The aforementioned power component 300 is connected to the drive shaft 130 and drives the drive shaft 130 to rotate.

[0039] The aforementioned position detection component includes a detection unit, a tested unit, and a central unit. The detection unit is mounted on the upper plate 110, and the tested unit is mounted on the feeding mechanism. The detection unit sends an acknowledgment signal to the tested unit. This acknowledgment signal is used to determine whether the feeding port is aligned with the ball mill jar 210. After receiving the acknowledgment signal, the tested unit, based on the positional relationship between the feeding port and the ball mill jar 210, if the feeding port is aligned, sends an alignment feedback signal to the central unit. The central unit receives the feedback signal and, based on this feedback signal, sends an adjustment signal to the power assembly 300, causing the power assembly 300 to stop outputting, thus achieving alignment between the feeding port and the ball mill jar 210. If the feeding port is not aligned, the tested unit sends a misalignment feedback signal to the central unit. The central unit receives the feedback signal and, based on this feedback signal, sends an adjustment signal to the power assembly 300, causing the power assembly 300 to continue outputting until the tested unit sends an alignment feedback signal to the central unit.

[0040] In this application, the algorithm for the central unit to determine whether the feeding port and the ball mill jar 210 are aligned adopts the prior art, and this application does not involve any improvement to the algorithm.

[0041] In this application, a detection unit is set on the rotating assembly 100, which, together with the test unit set on the feeding mechanism, determines the positional relationship between the grinding jar 210 and the feeding port. Furthermore, by adjusting the power assembly 300, the alignment of the grinding jar 210 and the feeding port is ensured, preventing spillage during loading. This application also incorporates a scheme with multiple grinding jars 210 and multiple feeding ports, ensuring both feeding efficiency and grinding efficiency.

[0042] The power unit 300 specifically includes a servo motor 310 and a three-phase motor 320. The output end of the servo motor 310 is connected to the input end of the three-phase motor 320, and the output end of the three-phase motor 320 is connected to the drive shaft 130. The servo motor 310 receives adjustment signals from the central unit.

[0043] In this application, the three-phase motor 320 is responsible for the main power output, while the servo motor 310 performs precise control of the three-phase motor 320 to achieve rapid response and accurate positioning.

[0044] Furthermore, the power assembly 300 also includes a reducer 330 and an electromagnetic clutch 340. The output end of the servo motor 310 is connected to the input end of the reducer 330, the output end of the reducer 330 is connected to the input end of the electromagnetic clutch 340, and the output end of the electromagnetic clutch 340 is connected to the input end of the three-phase motor 320.

[0045] In this application, the output speed of the servo motor 310 is adjusted by the reducer 330, so that the output speed is more suitable for driving the three-phase motor 320 after the adjustment by the reducer 330. At the same time, the use of the electromagnetic clutch 340 can make the grinding jar 210 decelerate evenly, reducing the inertia generated by the sudden stop of the grinding jar 210.

[0046] In this embodiment, the specific structure and connection method of the power assembly 300 are detailed. Specifically:

[0047] The power assembly 300 also includes a bracket, which includes a middle plate 351 and an upper plate 352 disposed above the middle plate 351. The aforementioned reducer 330 is a servo right-angle reducer, which is fixed on the middle plate 351. The output end of the servo right-angle reducer passes through the middle plate 351 and the upper plate 352. A first bearing and a second bearing are also provided on the output end of the servo right-angle reducer. The first bearing is fixed on the middle plate 351, and the second bearing is fixed on the upper plate 352. The electromagnetic clutch 340 is fixed on the upper plate 352. After passing through the middle plate 351 and the upper plate 352, the output end of the servo right-angle reducer is connected to the input end of the electromagnetic clutch 340 through a coupling. The input end of the servo right-angle reducer is connected to the output end of the servo motor 310 through a coupling.

[0048] An output gear 341 is provided at the output end of the electromagnetic clutch 340, and a driven gear 321 is provided at the input end of the three-phase motor 320. A chain is provided between the output gear 341 and the driven gear 321. Under the combined action of the output gear 341, the driven gear 321 and the chain, the electromagnetic clutch 340 transmits power to the three-phase motor 320, driving the three-phase motor 320 to rotate.

[0049] Preferably, a tensioner 360 is also provided on the upper plate 352. The tensioner 360 is used to adjust the tension of the chain. This application provides a structure for the tensioner 360, which includes a support with a groove. The direction of the groove is perpendicular to the length direction of the chain. A screw is slidably disposed in the groove. The screw passes through the groove and is screwed to a slide block at the upper end of the support. An auxiliary bearing for abutting the chain is provided on the slide block. The position of the slide block on the groove can be adjusted by adjusting the tightness of the bolt, thereby adjusting the tension of the chain.

[0050] Understandably, other tensioner structures may also be used in this application, requiring that the tensioner 360° does not interfere with the chain drive.

[0051] The aforementioned rotating assembly also includes a chassis and a compartment. The chassis is mounted on the upper surface of the compartment, and the lower end of the drive shaft 130 passes through the base plate and the upper surface of the compartment. The drive shaft 130 is driven by a sprocket at the output end of the three-phase motor 320 below the upper surface of the compartment. Preferably, the drive shaft 130 is rotatably connected to the lower surface of the compartment. Specifically, a third bearing is provided at the lower end of the drive shaft 130, and the outer ring of the third bearing is fixedly connected to the lower surface of the compartment. The third bearing is preferably an angular contact bearing, which can withstand a certain axial force, enabling the drive shaft 130 to provide support and rotation.

[0052] A transition shaft 180 is also provided on the transition gear 150. Transition bearings are respectively provided at the upper and lower ends of the transition shaft 180. The outer ring of the upper transition bearing is fixedly connected to the upper disk 110, and the outer ring of the lower transition bearing is fixedly connected to the middle disk 120. Under the action of the two transition bearings, the transition shaft 180 can rotate relative to the middle disk 120, thereby driving the transition gear 150 to rotate. Planetary bearings are provided at both ends of the planetary gear shaft 170. The outer ring of the planetary bearing at the upper end of the planetary gear shaft 170 is fixedly connected to the upper disk 110, and the outer ring of the planetary bearing at the lower end of the planetary gear shaft 170 is fixedly connected to the middle disk 120. Under the action of the two planetary bearings, the planetary shaft can drive the planetary gear 160 to rotate. Simultaneously, driven by the middle disk 120, the planetary shaft drives the planetary gear 160 to rotate around the driving gear.

[0053] Preferably, the rotating assembly 100 further includes a cylindrical body 190, wherein the aforementioned upper plate 110, middle plate 120 and chassis are spaced apart along the axial direction of the drive wheel within the cylindrical body 190.

[0054] In this embodiment, the number of grinding jars 210 is set to four, and the four grinding jars 210 are arranged symmetrically with respect to the center of the central plate 120. The number of corresponding position detection components is the same as the number of grinding jars 210, and each detection unit is located in the middle of adjacent grinding jars 210.

[0055] This application does not specify the specific structure of the feeding mechanism. However, to achieve high-efficiency feeding, the feeding mechanism should have the same number of feeding ports as the ball mill jar 210, and the feeding ports should be positioned opposite to the ball mill jar 210 to ensure that the material can fall freely into the ball mill jar 210. The test unit is located in the middle of adjacent feeding ports. A solenoid valve is installed at each feeding port, and the solenoid valve is controlled by the central unit.

[0056] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A ball milling mechanism for a fully automatic planetary ball mill, characterized in that, include: A rotating assembly (100) includes an upper plate (110) and a middle plate (120). A drive shaft (130) is passed through the center of the middle plate (120). A sun gear (140) is fixed at the upper end of the drive shaft (130). Several sets of transition gears (150) and planetary gears (160) are eccentrically arranged on the middle plate (120). The transition gears (150) and planetary gears (160) are rotatably arranged on the middle plate (120). The planetary gears (160) are connected to the sun gears (140) through the transition gears (150). The sun gears (140), transition gears (150), and planetary gears (160) are helical gears. A planetary gear shaft (170) is fixed on the planetary gears (160). The upper end of the planetary gear shaft (170) passes through the upper plate (110). The ball mill jar assembly (200) includes a ball mill jar (210) which is fixedly disposed at the upper end of the planetary gear shaft (170); A power assembly (300) is connected to the drive shaft (130) via a transmission connection. The position detection component includes a detection unit, a test unit, and a central unit. The detection unit is disposed on the upper plate (110), and the test unit is disposed on the feeding mechanism. The detection unit sends a confirmation signal to the test unit to determine whether the feeding port is aligned with the ball mill jar (210). The test unit receives the confirmation signal and sends a feedback signal to the central unit. The central unit receives the feedback signal and sends an adjustment signal to the power component (300).

2. The ball milling mechanism of the fully automatic planetary ball mill according to claim 1, characterized in that: The power assembly (300) includes a servo motor (310) and a three-phase motor (320). The output end of the servo motor (310) is connected to the input end of the three-phase motor (320), and the output end of the three-phase motor (320) is connected to the drive shaft (130). The servo motor (310) receives the adjustment signal from the central unit.

3. The ball milling mechanism of the fully automatic planetary ball mill according to claim 2, characterized in that: The power assembly (300) also includes a reducer (330) and an electromagnetic clutch (340). The output end of the servo motor (310) is connected to the electromagnetic clutch (340) via the reducer (330), and the output end of the electromagnetic clutch (340) is connected to the input end of the three-phase motor (320).

4. The ball milling mechanism of the fully automatic planetary ball mill according to claim 3, characterized in that: The power assembly (300) also includes a bracket, which includes a middle plate (351) and an upper plate (352) located above the middle plate (351). The reducer (330) is a servo right-angle reducer. The output end of the servo right-angle reducer is vertically arranged on the middle plate (351), and the output end of the servo right-angle reducer is provided with a first bearing and a second bearing. The first bearing and the second bearing are respectively fixed on the middle plate (351) and the upper plate (352). The electromagnetic clutch (340) is arranged on the upper plate (352). The output end of the servo right-angle reducer is connected to the input end of the electromagnetic clutch (340). The output end of the electromagnetic clutch (340) is connected to the input end of the three-phase motor via a sprocket drive. The output end of the servo motor (310) is connected to the input end of the servo right-angle reducer.

5. The ball milling mechanism of the fully automatic planetary ball mill according to claim 4, characterized in that: The output end of the electromagnetic clutch (340) is provided with an output gear (341), the input end of the three-phase motor (320) is provided with a driven gear (321), a chain for transmission is provided between the output gear (341) and the driven gear (321), and a tensioner (360) is also provided on the upper plate (352), the tensioner (360) is used to adjust the tension of the chain.

6. The ball milling mechanism of the fully automatic planetary ball mill according to claim 2, characterized in that: The rotating assembly (100) also includes a chassis and a bottom compartment. The chassis is disposed on the upper surface of the bottom compartment. The drive shaft (130) passes through the upper surfaces of the chassis and the bottom compartment. The drive shaft (130) is driven by the output sprocket of the three-phase motor (320) below the upper surface of the bottom compartment. The transition gear (150) is provided with a transition shaft (180). The upper and lower ends of the transition shaft (180) are rotatably connected to the middle plate (120) and the upper plate (110) respectively through transition bearing shafts. The upper and lower ends of the planetary gear shaft (170) are provided with planetary bearings. The planetary gear shaft (170) is rotatably connected to the middle plate (120) and the upper plate (110) through planetary bearings.

7. The ball milling mechanism of the fully automatic planetary ball mill according to claim 6, characterized in that: The rotating assembly (100) also includes a cylindrical body (190), in which the upper plate (110), middle plate (120) and base plate are spaced apart within the cylindrical body (190).

8. The ball milling mechanism of the fully automatic planetary ball mill according to claim 1, characterized in that: The number of position detection components is the same as the number of milling jars (210), and each position detection component is located in the middle of an adjacent milling jar (210).

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