Swing mechanism of pharmaceutical machine
By designing a rotary mechanism for pharmaceutical machines that uses a sliding bar and a slider, the problem of drugs spilling or being thrown out during movement was solved, thus achieving accurate capsule dosage.
Patent Information
- Application Number
- CN202422410181.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing rotary mechanism of pharmaceutical machines cannot close the capsule in time after the drug is filled into it, which makes it easy for the drug to spill out or be thrown out of the capsule during the movement, resulting in inaccurate dosage.
A pharmaceutical machine rotary mechanism was designed. Through the cooperation of the convex rail and the circular groove on the chassis, and the sliding of the slide rod and the slider, the upper support and the lower support are engaged or disengaged, ensuring that the medicine does not spill or fly out during rotation.
This effectively prevents the medication from spilling out or being flung out of the capsule during rotation, thus improving the accuracy of the capsule dosage.
Smart Images
Figure CN223560483U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pharmaceutical equipment, and in particular to a rotary mechanism for a pharmaceutical machine. Background Technology
[0002] In today's pharmaceutical industry, efficient, precise, and stable pharmaceutical equipment is crucial for the quality and yield of drugs. Among these, the rotary mechanism of a pharmaceutical machine, as one of the key components, directly affects the efficiency and quality of the entire pharmaceutical process.
[0003] However, existing rotary mechanisms for pharmaceutical manufacturing machines have the following shortcomings in practical use: After the drug is filled into the capsule, it cannot be sealed in time, resulting in drug overflowing or being ejected from the capsule during movement, leading to inaccurate dosage. For example, after granular drugs are filled into the capsule, the centrifugal force generated during the movement of the rotary mechanism can cause the granules to overflow or be ejected from the capsule, resulting in inaccurate dosage. Therefore, the rotary mechanism for pharmaceutical manufacturing machines proposed in this application is proposed. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pharmaceutical machine rotary mechanism that can quickly close capsules to improve the accuracy of capsule dosage.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A rotary mechanism for a pharmaceutical manufacturing machine, comprising:
[0007] A chassis, wherein a curved groove is formed on the chassis, and a convex rail is provided on the chassis, the convex rail being located outside the curved groove; and
[0008] A rotating assembly includes a turntable, an upper support, a slide rod, a lower support, a slider, and a driving component. The driving component is located at the bottom of the chassis, and the turntable is located at the output end of the driving component, situated above the chassis. The slide rod passes through the turntable along its axial direction, with one end abutting against the convex rail. The upper support is located at the other end of the slide rod. The slider passes through the turntable along its radial direction, with one end slidably positioned within the curved groove. The lower support is located at the other end of the slider. When the driving component rotates the turntable, the slide rod slides along the convex rail, and the slider slides along the curved groove, thereby causing the upper and lower supports to engage or disengage.
[0009] Optionally, the convex track comprises a first track and a second track which are connected to each other, and the first track and the second track have a height difference.
[0010] Optionally, an axle wheel is arranged on the end of the slide rod away from the upper support, and the axle wheel abuts against the convex track.
[0011] Optionally, the rotating assembly further comprises a spring, the spring is sleeved on the slide rod and located at the end of the slide rod close to the convex track, and the spring pushes the swivel disc and the axle wheel respectively.
[0012] Optionally, the slide block comprises a cross rod, a clamping block and a pulley, the cross rod is arranged on the swivel disc along the radial direction of the swivel disc, the clamping block is sleeved on one end of the cross rod, the pulley is arranged on the end of the clamping block away from the cross rod, and the pulley is located in the circular groove, and the lower support is arranged on the end of the cross rod away from the clamping block.
[0013] Optionally, the circular groove comprises a first circular groove and a second circular groove which are connected to each other, and the diameter of the second circular groove is greater than that of the first circular groove.
[0014] Optionally, a capsule hole is arranged on the lower support, and the capsule hole is used for accommodating a capsule.
[0015] Optionally, the capsule hole comprises an upper opening and a lower opening which are connected to each other, and the diameter of the upper opening is greater than that of the lower opening.
[0016] Optionally, the rotating assembly further comprises an adjusting pad, the adjusting pad is arranged on the swivel disc, and the adjusting pad is located between the swivel disc and the output end of the driving member.
[0017] Optionally, the rotating assembly further comprises a cover plate, and the cover plate is arranged on the swivel disc.
[0018] Compared with the prior art, the present application has at least the following advantages:
[0019] In the present application, one end of each slide rod abuts against the convex track, one end of each slide block is located in the circular groove, the swivel disc drives each slide rod and each slide block to rotate, the slide rod slides along the convex track, the slide block slides along the circular groove, the upper support and the lower support are buckled or separated from each other, and the centrifugal force generated during the rotation of the filled capsule does not cause the medicine to overflow or be thrown out from the capsule, so that the medicine amount in the capsule is accurate. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as a limitation to the scope. Other related drawings can also be obtained by those skilled in the art without creative labor on the premise of not paying creative labor.
[0021] Figure 1 The cross-sectional structure schematic view of the rotary structure of the pharmaceutical machine of an embodiment of the present application;
[0022] Figure 2 The chassis structure schematic view of an embodiment of the present application;
[0023] Figure 3 The front view structure schematic view of the chassis of an embodiment of the present application; Figure 2
[0024] Figure 4 The top view structure schematic view of the pulley and the shaft wheel sliding on the chassis of an embodiment of the present application;
[0025] Figure 5 The structure schematic view of the rotary disc of an embodiment of the present application;
[0026] Figure 6 The structure schematic view of the installation position of each long rod of an embodiment of the present application;
[0027] Figure 7 The structure schematic view of the extended state of the lower support of an embodiment of the present application.
[0028] Explanation of reference signs:
[0029] 1, the rotary mechanism of the pharmaceutical machine; 10, the chassis; 20, the rotating assembly; 11, the convex rail; 111, the first rail; 112, the second rail; 21, the sliding rod; 22, the rotary disc; 23, the driving member; 24, the upper support; 241, the material hole; 12, the circular groove; 121, the first circular groove; 122, the second circular groove; 25, the sliding block; 26, the lower support; 261, the capsule hole; 211, the shaft wheel; 27, the spring; 251, the cross rod; 252, the clamping block; 253, the pulley; 254, the long rod; 28, the cover plate. DETAILED DESCRIPTION
[0030] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings.
[0031] In the description of the embodiments of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0032] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.
[0033] In the embodiments of the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.
[0034] As Figures 1 to 3As shown in the figure, in an embodiment, a rotary mechanism 1 of a pharmaceutical machine comprises a base 10 and a rotating assembly 20. The base 10 is in a circular ring structure, and the base 10 is arranged on the tabletop of a pharmaceutical device. A driving member 23 is arranged on the side of the tabletop of the pharmaceutical device away from the base 10, and the output end of the driving member 23 extends out from the center of the base 10 through the tabletop of the pharmaceutical device. A rotating disc 22 is arranged on the output end of the driving member 23, so that the driving member 23 can drive the rotating disc 22 to rotate. Further, the base 10 is provided with a convex rail 11, which is arranged along the periphery of the base 10, so that the convex rail 11 is also in a circular ring structure. The convex rail 11 comprises a first rail 111 and a second rail 112 connected to each other, and the first rail 111 and the second rail 112 have a height difference. For example, the height of the second rail 112 is greater than the height of the first rail 111. Further, a slide rod 21 is arranged on the rotating disc 22 along the axial direction of the rotating disc 22, and one end of the slide rod 21 abuts against the convex rail 11. In this way, when the driving member 23 drives the rotating disc 22 to rotate, the rotating disc 22 drives the slide rod 21 to rotate around the axis of the rotating disc 22, and thus the one end of the slide rod 21 slides along the convex rail 11. Since the height of the second rail 112 is greater than the height of the first rail 111, when the rotating disc 22 drives the slide rod 21 to slide from the first rail 111 to the second rail 112, the second rail 112 pushes the slide rod 21 to slide upward in the direction of the axis of the rotating disc 22. When the rotating disc 22 drives the slide rod 21 to slide from the second rail 112 to the first rail 111, the slide rod 21 slides downward in the direction of the axis of the rotating disc 22. In this way, when the driving member 23 continuously drives the rotating disc 22 to rotate, the slide rod 21 slides up and down along the convex rail 11 reciprocally, and thus the upper support 24 arranged on the end of the slide rod 21 away from the convex rail 11 also slides up and down reciprocally. Further, the driving member 23 is in a indexing box structure.
[0035] As shown in the figure, Figure 2 , Figure 4 , Figure 7 In an embodiment, a circular curved groove 12 is formed on the base 10, and the circular curved groove 12 tends to be a circular ring structure. The circular curved groove 12 comprises a first circular groove 121 and a second circular groove 122 connected to each other, and the diameter of the second circular groove 122 is greater than the diameter of the first circular groove 121.
[0036] It is to be noted that the circular groove 12 is arranged on the base plate 10 and is located at the inner side of the convex rail 11. Further, the slider 25 is arranged on the rotating disc 22 along the radial direction of the rotating disc 22, and one end of the slider 25 is arranged in the circular groove 12. In this way, when the driving member 23 drives the rotating disc 22 to rotate, the rotating disc 22 drives the slider 25 to rotate along the radial direction of the rotating disc 22, and then the one end of the slider 25 slides along the circular groove 12. Since the diameter of the second circular groove 122 is larger than the diameter of the first circular groove 121, when the rotating disc 22 drives the slider 25 to slide from the first circular groove 121 to the second circular groove 122, the slider 25 slides outward along the radial direction of the rotating disc 22 and extends outward. When the rotating disc 22 drives the slider 25 to slide from the second circular groove 122 to the first circular groove 121, the slider 25 slides inward along the radial direction of the rotating disc 22 and retracts. In this way, when the driving member 23 continuously drives the rotating disc 22 to rotate, the slider 25 slides along the circular groove 12 to extend and retract reciprocally, and then the lower support 26 arranged on the one end of the slider 25 away from the circular groove 12 also slides to extend and retract reciprocally.
[0037] It is to be noted that the slide rod 21 is arranged on the rotating disc 22 along the axial direction of the rotating disc 22, and the slider 25 is arranged on the rotating disc 22 along the radial direction of the rotating disc 22 and is arranged in a cross shape, so that the slide rod 21 can slide up and down relative to the rotating disc 22, and the slider 25 can slide to extend and retract relative to the rotating disc 22.
[0038] It is to be noted that the first rail 111 and the first circular groove 121 are arranged on one half of the base plate 10, and the second rail 112 and the second circular groove 122 are arranged on the other half of the base plate 10. In this way, when the rotating disc 22 drives the slide rod 21 and the slider 25 to rotate to one half of the base plate 10, the upper support 24 on the slide rod 21 and the lower support 26 on the slider 25 are buckled to each other, and when the rotating disc 22 drives the slide rod 21 and the slider 25 to rotate to the other half of the base plate 10, the upper support 24 on the slide rod 21 and the lower support 26 on the slider 25 are separated from each other, so that the upper support 24 and the lower support 26 can rotate with the rotating disc 22 to be separated from each other for filling the medicine, and after the filling is completed, the upper support 24 and the lower support 26 can rotate with the rotating disc 22 to be buckled to each other, so as to avoid the medicine from overflowing or being thrown out from the capsule due to the centrifugal force generated during the rotation of the rotating disc 22, and to avoid the inaccuracy of the medicine in the capsule.
[0039] As shown in FIG. 1, Figure 1 In an embodiment, one end of the slide rod 21 away from the upper support 24 is provided with an axle wheel 211, and the axle wheel 211 abuts against the convex rail 11.
[0040] It needs to be explained that the position where the two ends of the first track 111 connect with the two ends of the second track 112 is a slope structure, so that the shaft wheel 211 can roll from the first track 111 to the second track 112. The slide rod 21 comprises a rolling seat and two rod bodies, the two rod bodies are both arranged on the rotating disc 22, one end of the two rod bodies is connected with the upper support 24, the other end of the two rod bodies is connected with the rolling seat, and the shaft wheel 211 is rotationally arranged on the rolling seat and abuts against the convex track 11.
[0041] As shown in Figure 1 , in an embodiment, the rotating assembly 20 further comprises a spring 27, the spring 27 is sleeved on the slide rod 21 and located at one end of the slide rod 21 close to the convex track 11, and the spring 27 pushes the rotating disc 22 and the shaft wheel 211 respectively.
[0042] It needs to be explained that the spring 27 pushes the rotating disc 22 towards one side of the base plate 10 and the shaft wheel 211 respectively, and since the height of the second track 112 is greater than the height of the first track 111, when the rotating disc 22 drives the slide rod 21 to rotate, the slide rod 21 will drive the shaft wheel 211 to roll on the convex track 11, when the shaft wheel 211 rolls from the first track 111 to the second track 112, the shaft wheel 211 will roll upwards along the slope structure to drive the slide rod 21 to slide upwards, thereby extruding the spring 27, when the shaft wheel 211 rolls from the second track 112 to the first track 111, the spring 27 will push the shaft wheel 211 to roll along the other slope structure to the first track 111, so that when the rotating disc 22 drives the slide rod 21 to rotate, the slide rod 21 can continuously roll on the convex track 11.
[0043] As shown in Figure 1 , in an embodiment, the slide block 25 comprises a cross rod 251, a clamping block 252 and a pulley 253, the cross rod 251 is arranged on the rotating disc 22 along the radial direction of the rotating disc 22, the clamping block 252 is sleeved on one end of the cross rod 251, and the pulley 253 is rotationally arranged on the end of the clamping block 252 away from the cross rod 251, and the pulley 253 is located in the circular curved groove 12, and the lower support 26 is arranged on the end of the cross rod 251 away from the clamping block 252.
[0044] It should be noted that the clamping block 252 is located on the inner side of the rotary disc 22 in the axial direction of the rotary disc 22, and the clamping block 252 is provided with a through hole, and one end of the cross rod 251 is arranged in the through hole. The clamping block 252 is also provided with a screw hole extending from the outer wall of the clamping block 252 to the inside of the through hole. When one end of the cross rod 251 is located in the through hole, the screw can be screwed into the through hole from the screw hole, so that the screw abuts against the cross rod 251 in the through hole, and the clamping block 252 is fixed on one end of the cross rod 251. Further, the lower support 26 is arranged at the end of the cross rod 251 away from the clamping block 252. When the lower support 26 is too far or too close to the filling station of the pharmaceutical machine, the screw on the clamping block 252 can be adjusted.
[0045] As shown in Figure 1 , in an embodiment, the sliding block 25 includes a long rod 254, a cross rod 251, a clamping block 252 and a pulley 253.
[0046] It should be noted that the rotary disc 22 has an inner and outer structure, the cross rod 251 is arranged on the outer ring of the rotary disc 22 in the radial direction of the rotary disc 22, and the long rod 254 is arranged on the outer ring and the inner ring of the rotary disc 22 in the radial direction of the rotary disc 22. Further, the clamping block 252 is located between the inner ring and the outer ring of the rotary disc 22, and the clamping block 252 is provided with two through holes and two screw holes, and the two screw holes correspond to the two through holes respectively, and the two screw holes extend from the outer wall of the clamping block 252 to the two through holes. The long rod 254 passes through the outer ring of the rotary disc 22, the through hole on the clamping block 252 away from the bottom disc 10, and the inner ring of the rotary disc 22, respectively. The cross rod 251 passes through the outer ring of the rotary disc 22 and the through hole on the clamping block 252 close to the bottom disc 10, respectively. The long rod 254 and the cross rod 251 are fixed by screwing through the screw holes. Further, the end of the long rod 254 and the cross rod 251 away from the clamping block 252 is connected with the lower support 26, so that the long rod 254 and the cross rod 251 drive the lower support 26 to slide together. Because the lower support 26 needs to be rotated to the filling station for filling, the filling mechanism will generate a downward force on the lower support 26. After a long time, the cross rod 251 connected with the lower support 26 is easy to bend or deform, which causes the lower support 26 to be unable to align with the filling mechanism. Therefore, the pharmaceutical machine rotary mechanism 1 of the present application is connected with the lower support 26 through the long rod 254 and the cross rod 251, and the long rod 254 is located above the cross rod 251, and the long rod 254 extends from the outer ring of the rotary disc 22 to the inner ring of the rotary disc 22. In this way, the stability of the lower support 26 can be improved, and the service life of the pharmaceutical machine rotary mechanism 1 of the present application can be improved.
[0047] It should be noted that the pulley 253 is rotatably arranged at the end of the clamping block 252 away from the long rod 254, and the pulley 253 is located in the circular groove 12, so that the pulley 253 can roll along the side wall of the circular groove 12, thereby driving the lower support 26 to slide relative to the rotary disc 22.
[0048] It should be noted that the upper support 24, the two sliding rods 21, the two springs 27 and the shaft wheel 211 are combined into an upper mold set, and a plurality of upper mold sets are arranged in a circular array on the rotary disc 22, and one end of each upper mold set abuts against the convex rail 11. When the driving member 23 drives the rotary disc 22 to rotate, the rotary disc 22 drives one end of each upper mold set to slide along the convex rail 11, so that each upper mold set is lifted and lowered in turn, like a wave-shaped lifting and lowering sliding.
[0049] It should be noted that the lower support 26, the cross rod 251, the long rod 254, the clamping block 252 and the pulley 253 are combined into a lower mold set, and a plurality of lower mold sets are arranged in a circular array on the rotary disc 22, and each lower mold set corresponds to each upper mold set, and one end of each lower mold set is located in the circular groove 12. When the driving member 23 drives the rotary disc 22 to rotate, the rotary disc 22 drives one end of each lower mold set to slide along the circular groove 12, so that each lower mold set is extended and retracted from the rotary disc 22 in turn.
[0050] It should be noted that since each upper mold set corresponds to each lower mold set, when the rotary disc 22 rotates, the upper mold set and the lower mold set can simultaneously lift and slide and extend and retract, thereby enabling the upper support 24 and the lower support 26 to be coupled or separated, and each upper mold set and each lower mold set is coupled or separated in turn.
[0051] As shown in Figure 1 , Figure 7 In an embodiment, a plurality of capsule holes 261 are formed in the lower support 26, and each capsule hole 261 is used to accommodate a lower capsule half. The capsule hole 261 includes an upper opening and a lower opening that are in communication with each other, the diameter of the upper opening is larger than the diameter of the lower opening, the upper opening is located above the upper support 24, and the lower opening is located below the upper support 24, so that the lower capsule half located in the capsule hole 261 cannot slide out of the capsule hole 261. Further, the upper opening is aligned with the discharge hole 241 of the filling mechanism, so that the medicine can be filled into the lower capsule half from the upper opening.
[0052] It should be noted that the upper support 24 is provided with a plurality of material holes 241, each of which corresponds to each capsule hole 261, so that each material hole 241 and each capsule hole 261 jointly receive the capsule. The material hole 241 includes an upper material opening and a lower material opening, the upper material opening is located above the upper support 24, the lower material opening is located below the upper support 24, and the diameter of the lower material opening is smaller than that of the upper opening. Further, when the capsules on the lower support 26 are filled with medicine, the upper support 24 will adsorb the upper half shell of each capsule and the lower support 26 to make the upper half shell of the capsule and the lower half shell of the capsule fit to form the capsule.
[0053] As shown in Figure 1 In an embodiment, the rotating assembly 20 further includes an adjusting pad, which is arranged on the rotating disc 22 and located between the rotating disc 22 and the output end of the driving member 23.
[0054] It should be noted that the adjusting pad is used to adjust the gap between each capsule hole 261 on the lower support 26 and the material hole 241 of the filling mechanism of the pharmaceutical machine, so as to avoid the overflow of the medicine from the gap between the material hole 241 and the capsule hole 261. For example, if the gap between the material hole 241 and the capsule hole 261 is too large, the powdered medicine is easy to overflow from the gap, and the granular medicine is also easy to be stuck in the gap and affect the operation of the equipment.
[0055] As shown in Figure 1 In an embodiment, the rotating assembly 20 further includes a cover plate 28, which is arranged on the rotating disc 22.
[0056] It should be noted that the cover plate 28 is arranged on the top of the rotating disc 22 to seal the gap between the inner ring and the outer ring of the rotating disc 22, so as to avoid the dust from entering the inside of the rotating disc 22 and affecting the operation of the rotating mechanism.
[0057] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A rotary mechanism of a pharmaceutical machine, characterized by comprising: The utility model relates to a rotating assembly and a capsule machine, and relates to the technical field of capsule machines. The rotating assembly comprises a base plate, a rotating disc, an upper support, a slide rod, a lower support, a slide block and a driving element. The base plate is provided with a circular groove and a convex rail. The driving element is arranged at the bottom of the base plate.
2. The pharmaceutical machine rotary mechanism according to claim 1, wherein The rotating disc is arranged on the output end of the driving element and is located above the base plate.
3. The pharmaceutical machine rotary mechanism according to claim 2, wherein The slide rod is arranged on the rotating disc along the axial direction of the rotating disc.
4. The pharmaceutical machine rotary mechanism according to claim 3, wherein One end of the slide rod abuts against the convex rail.
5. The pharmaceutical machine turret of claim 1, wherein, The upper support is arranged on the other end of the slide rod.
6. The pharmaceutical machine rotary mechanism according to claim 5, wherein, The slide block is arranged on the rotating disc along the radial direction of the rotating disc.
7. The pharmaceutical machine rotary mechanism according to claim 5, wherein One end of the slide block is slidingly arranged in the circular groove.
8. The pharmaceutical machine rotary mechanism according to claim 7, wherein The lower support is arranged on the other end of the slide block.
9. The pharmaceutical machine turret of claim 1, wherein, When the driving element drives the rotating disc to rotate, the slide rod slides along the convex rail, and the slide block slides along the circular groove, so that the upper support and the lower support are coupled or separated.
10. The pharmaceutical machine rotary mechanism according to claim 9, wherein, The convex rail comprises a first rail and a second rail which are connected to each other. The first rail and the second rail have a height difference. The end of the slide rod away from the upper support is provided with a shaft wheel which abuts against the convex rail. The rotating assembly further comprises a spring which is sleeved on the slide rod and located at the end of the slide rod close to the convex rail. The spring pushes the rotating disc and the shaft wheel respectively. The slide block comprises a cross rod, a clamping block and a pulley. The cross rod is arranged on the rotating disc along the radial direction of the rotating disc. The clamping block is sleeved on one end of the cross rod. The pulley is arranged on the end of the clamping block away from the cross rod and located in the circular groove. The lower support is arranged on the end of the cross rod away from the clamping block. The circular groove comprises a first circular groove and a second circular groove which are connected to each other. The diameter of the second circular groove is greater than the diameter of the first circular groove. The lower support is provided with a capsule hole for accommodating a capsule. The capsule hole comprises an upper opening and a lower opening which are connected to each other. The diameter of the upper opening is greater than the diameter of the lower opening. The rotating assembly further comprises an adjusting pad which is arranged on the rotating disc and located between the rotating disc and the output end of the driving element. The rotating assembly further comprises a cover plate which is arranged on the rotating disc.