Reciprocating power output mechanism and feeding flattening device for offsetting vibration

Abstract

This invention discloses a reciprocating power output mechanism for damping vibration and a feeding and smoothing device, comprising a support frame, a rotating shaft installed within the support frame, the rotating shaft being driven by rotational power to rotate around its own axis; an eccentric sleeve is fitted on the rotating shaft, the eccentric sleeve comprising two or more eccentric bodies, each eccentric body being axially parallel to each other and spaced apart, the eccentric sleeve being fitted onto the rotating shaft through a shaft hole; a transmission block and a balance seat are respectively fitted on the two eccentric bodies, the transmission block being poweredly connected to a power output shaft, the power output shaft being slidably mounted on the support frame along its axial direction, the axial direction of the power output shaft being perpendicular to the axial direction of the rotating shaft; a counterweight is provided on the balance seat; thus, during the process of the rotating shaft driving the transmission block and balance seat to output power via the eccentric sleeve, the balance seat combined with the counterweight forms a load balance, effectively solving the vibration problem and greatly contributing to ensuring the integrity of tablet feeding and filling.

Description

Technical Field

[0001] This invention relates to the field of pharmaceutical equipment technology, and in particular to a reciprocating power output mechanism for offsetting vibration and a feeding and smoothing device. Background Technology

[0002] Osmotic pump tablets are sustained-release tablet formulations with a semi-permeable membrane on their surface. Typically, release micropores need to be punched in the semi-permeable membrane, and these micropores are crucial to the release quality of osmotic pump formulations.

[0003] After the tablets are reliably sorted and arranged, a laser drilling machine is used to drill holes. For example, in the existing patent application number 2024104840990, entitled "A Laser Drilling Machine for Mass Production Osmotic Pump Tablets," a feeding hopper combined with a packing mechanism is used to fill and arrange the tablets on the conveyor carrier. During filling, a brush is used to smooth the tablets on the carrier. In actual use, although the brush has a certain degree of flexibility, the mechanical vibration caused by uneven load and friction during brush movement, especially for brushes performing axial smoothing movements where the vibration caused by lateral movement is more pronounced, can easily cause wear or even damage to the tablets during smoothing, affecting the tablet quality. Summary of the Invention

[0004] To address the aforementioned issues, this application provides a reciprocating power output mechanism and a feeding and smoothing device with a reasonable structure to counteract vibration, thereby effectively solving the vibration problem, greatly contributing to ensuring the integrity of tablet feeding and filling, and helping to improve and ensure the reliability and service life of the device.

[0005] The technical solution adopted in this invention is as follows: A reciprocating power output mechanism for damping vibration includes a support frame, within which a rotating shaft is mounted. The rotating shaft is driven by rotational power to rotate around its own axial direction. An eccentric sleeve is fitted onto the rotating shaft, the eccentric sleeve comprising two or more eccentric bodies. The eccentric bodies are axially parallel to each other and spaced apart. The eccentric sleeve is fitted onto the rotating shaft through a shaft hole. A transmission block and a balance seat are respectively fitted onto two eccentric bodies. The transmission block is poweredly connected to a power output shaft, which is slidably mounted on the support frame along its axial direction. The axial direction of the power output shaft is perpendicular to the axial direction of the rotating shaft. A counterweight is provided on the balance seat.

[0006] As a further improvement to the above technical solution: Each eccentric body has a circular outer wall surface, and the axis of the circular outer wall surface constitutes the axis of the eccentric body; the axis of the eccentric body is parallel to the axis of the shaft hole and is spaced apart.

[0007] It also includes shafts installed on the support frame, the shafts being arranged parallel to the rotating shaft, and transmission blocks and balance seats being rotatably fitted with the shafts respectively; each of the transmission blocks and balance seats has a receiving cavity, and an eccentric seat is placed inside the receiving cavity, with the eccentric seat and the eccentric body forming a rotatable fit; the height dimension of the receiving cavity is greater than the height dimension of the eccentric seat, and the two side walls of the eccentric seat are close to the receiving cavity.

[0008] An oil hole is provided axially inside the shaft. One end of the oil hole is connected to the outside of the support frame and fitted with a connector. The other end of the oil hole is laterally connected to the rotating structure located between the shaft and the transmission block and the balance seat. Lubrication grooves are provided on both sides of the eccentric seat. The lubrication grooves are connected to the joint fitted on the transmission block. The lubrication grooves extend toward the inner wall of the eccentric seat and are connected to the rotating structure located between the eccentric seat and the eccentric body.

[0009] A transmission mechanism is installed between the transmission block and the power output shaft. The transmission mechanism includes a slider that is slidably mounted on the transmission block. The slider is rotatably connected to one end of a connecting rod via a rotating shaft, and the other end of the connecting rod is rotatably connected to the power output shaft via a rotating shaft.

[0010] A screw is rotatably mounted on the transmission block, and the screw is helically fitted with the slider.

[0011] The side of the balance seat is fitted with a support rod, and a counterweight assembly is mounted on the support rod.

[0012] A feeding and smoothing device includes a reciprocating power output mechanism for absorbing vibration as described above, wherein a brush assembly is mounted on the end of the power output shaft via a shaft assembly; it also includes a conveying mechanism, a filling assembly located in front of the brush assembly, the filling assembly filling the material trough of the conveying mechanism, and the brush assembly reciprocating in the axial direction of the power output shaft to perform a smoothing action.

[0013] As a further improvement to the above technical solution: The shaft assembly includes a connecting shaft and a brush shaft axially connected via a linear motion bearing. The end of the connecting shaft is connected to a power output shaft, and the brush assembly is sleeved on the brush shaft. It also includes a rotational drive power, which is connected to the brush shaft via a rotational transmission assembly. The rotational drive power drives the brush shaft to rotate around its own axis.

[0014] A power base is rotatably mounted on the brush shaft via a bearing assembly, and the rotational drive power is installed on the power base; the rotational transmission assembly is housed within the power base and connects the rotational drive power output end to the brush shaft power supply.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the process of the rotating shaft driving the transmission block and balance seat to output power through the eccentric sleeve, the balance seat combined with the counterweight forms a load balance, which effectively solves the vibration problem, greatly helps to ensure the integrity of the tablet feeding and filling, and helps to improve and ensure the reliability and service life of the device. The present invention also includes the following advantages: By addressing and mitigating vibration, the wear and tear on components during vibration is effectively reduced or even avoided, helping to ensure the reliability of the mechanism. It is energy-efficient and compact, forming a modular structure that is easy to install and use.

[0016] The two eccentric bodies on the eccentric sleeve are axially arranged on both sides of the shaft hole. When the rotating shaft drives the transmission block and balance seat through the eccentric sleeve, as the eccentric sleeve rotates around the shaft hole, the transmission block and balance seat move closer or further apart in the horizontal direction, thereby effectively counteracting the unbalance caused by vibration.

[0017] The brush assembly mounted on the brush shaft is driven by a reciprocating power output mechanism to reciprocate along the brush shaft axis. At the same time, the brush assembly also rotates around the brush shaft axis under the drive of rotational power. Thus, the reciprocating motion and rotation in the axial direction work together to smooth the filler material on the conveying mechanism, ensuring that the material is stably filled in the material trough of the conveying mechanism. This helps to ensure the stability of the material on the conveying mechanism and ensures its positioning accuracy, which is beneficial for subsequent processing of the material. In particular, the reciprocating power output mechanism solves and cancels the vibration of the brush assembly, reducing or even preventing the material from falling off due to vibration. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention.

[0019] Figure 2 for Figure 1 A sectional view.

[0020] Figure 3 This is a schematic diagram showing the assembly of the rotating shaft, transmission block, and balance seat of the present invention.

[0021] Figure 4 This is a schematic diagram of the eccentric sleeve of the present invention.

[0022] Figure 5 This is a schematic diagram showing the assembly of the eccentric seat and screw on the transmission block of the present invention.

[0023] Figure 6 This is a schematic diagram of the assembly of the transmission block and the eccentric seat of the present invention.

[0024] Figure 7 This is a schematic diagram of the feeding and smoothing device of the present invention.

[0025] Figure 8 This is a schematic diagram of the power connection of the brush assembly of the present invention.

[0026] Figure 9 This is a cross-sectional view of the shaft assembly of the present invention.

[0027] The components include: 1. Support frame; 2. Rotating shaft; 3. Power output shaft; 4. Counterweight assembly; 5. Transmission block; 6. Transmission mechanism; 7. Balance seat; 8. Shaft; 9. Eccentric sleeve; 10. Eccentric seat; 20. Conveying mechanism; 30. Brush assembly; 40. Packing assembly; 50. Discharge assembly; 60. Rotary drive power; 70. Rotary transmission assembly; 80. Shaft assembly; 11. Partition; 21. Driven wheel; 22. Driving wheel; 23. Motor; 31. Linear bearings; 41. Support rod; 51. Receiving cavity; 52. Slide rail structure; 53. Through hole; 61. Screw; 62. Slider; 63. Rotating shaft one; 64. Connecting rod; 65. Rotating shaft two; 81. Connector; 91. Eccentric body; 92. Shaft hole; 101. Lubrication groove; 102. Rotating body; 601. Power unit; 801. Connecting shaft; 802. Linear motion bearing; 803. Pulley; 804. Bearing assembly; 805. Brush shaft. Detailed Implementation

[0028] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, a reciprocating power output mechanism for damping vibration in this embodiment includes a support frame 1, a rotating shaft 2 installed inside the support frame 1, the rotating shaft 2 being driven by rotational power to rotate around its own axis; an eccentric sleeve 9 is fitted on the rotating shaft 2, the eccentric sleeve 9 including two or more eccentric bodies 91, each eccentric body 91 being axially parallel to each other and spaced apart, the eccentric sleeve 9 being fitted onto the rotating shaft 2 through a shaft hole 92; a transmission block 5 and a balance seat 7 are respectively fitted on the two eccentric bodies 91, the transmission block 5 being poweredly connected to a power output shaft 3, the power output shaft 3 being slidably mounted on the support frame 1 along its axial direction, the axial direction of the power output shaft 3 being perpendicular to the axial direction of the rotating shaft 2; a counterweight is provided on the balance seat 7.

[0030] In this embodiment, during the process of the rotating shaft 2 driving the transmission block 5 and the balance seat 7 to output power via the eccentric sleeve 9, the balance seat 7 combined with the counterweight forms a load balance, effectively solving the vibration problem.

[0031] like Figure 4 As shown, the circumferential outer wall of each eccentric body 91 is a circular outer circumferential surface, and the axial direction of the circular outer circumferential surface constitutes the axial direction of the eccentric body 91; the axial direction of the eccentric body 91 is parallel to the axial direction of the shaft hole 92 and is spaced apart.

[0032] In this embodiment, the shaft hole 92 of the eccentric sleeve 9 is fitted onto the rotating shaft 2, and each eccentric body 91 of the eccentric sleeve 9 is rotatedly fitted with the transmission block 5 and the balance seat 7 via the circular outer circumferential surface, for example, by using bearings to form the rotational fit.

[0033] In this embodiment, by setting the distance between the axial direction of the eccentric body 91 and the axial direction of the shaft hole 92, an axial offset is formed, so that when the rotating shaft 2 drives the eccentric sleeve 9 to rotate, the transmission block 5 and the balance seat 7 can perform opposite movements in the horizontal direction, forming a stable and constant dynamic balance.

[0034] The number of eccentric bodies 91 is two connected along the axial direction of the shaft hole 92, and the axial directions of the two eccentric bodies 91 are arranged on both sides of the axial direction of the shaft hole 92.

[0035] In this embodiment, two eccentric bodies 91 on the eccentric sleeve 9 are axially arranged on both sides of the shaft hole 92. When the rotating shaft 2 drives the transmission block 5 and the balance seat 7 to move through the eccentric sleeve 9, as the eccentric sleeve 9 rotates around the shaft hole 92, the transmission block 5 and the balance seat 7 move closer to each other or further away from each other in the horizontal direction, thereby effectively offsetting the unbalance caused by vibration.

[0036] In one embodiment, the two eccentric bodies 91 are not only axially positioned on opposite sides of the shaft hole 92, but also have the same axial spacing between them. This allows the two eccentric bodies 91 to drive the transmission block 5 and the balance seat 7 in a horizontally opposite but perfectly synchronized motion during the rotation of the eccentric sleeve 9. For example... Figure 4 In the middle, the axial directions of the two eccentric bodies 91 are L1 and L2 respectively, and the axial direction of the shaft hole 92 is L. L1 and L2 are symmetrically located on both sides of L.

[0037] In one embodiment, L1, L, and L2 are located in the same plane.

[0038] In one embodiment, the two eccentric bodies 91 have the same diameter on their circular outer surfaces, which helps to ensure dynamic balance. The overall structure is simple and compact, making it easy to install, debug and maintain.

[0039] The shaft hole 92 of the eccentric sleeve 9 is fixedly fitted with the rotating shaft 2 using a key structure. The outer wall of the eccentric body 91 is rotatedly fitted with the transmission block 5 and the balance seat 7 via bearings. Thus, the rotation of the rotating shaft 2 drives the transmission block 5 and the balance seat 7 to move synchronously via the eccentric sleeve 9.

[0040] It also includes a shaft 8 installed on the support frame 1, the shaft 8 being arranged parallel to the rotating shaft 2, and the transmission block 5 and the balance seat 7 being rotatably fitted with the shaft 8 respectively; the transmission block 5 and the balance seat 7 are respectively provided with receiving cavities 51, such as Figure 5 and Figure 6 As shown, the accommodating cavity 51 contains an eccentric seat 10, and the eccentric seat 10 and the eccentric body 91 are rotatably fitted together; the height dimension of the accommodating cavity 51 is greater than the height dimension of the eccentric seat 10, and the two side walls of the eccentric seat 10 are close to the accommodating cavity 51.

[0041] In this embodiment, the position of the transmission block 5 and the balance seat 7 is restricted by the shaft 8 when they move, so that the transmission block 5 and the balance seat 7 swing left and right with the shaft 8 as the center under the rotation of the eccentric sleeve 9. For example, they swing left and right with the same rhythm and amplitude but opposite directions.

[0042] In one embodiment, the shaft 8 is located above the transmission block 5 and the balance seat 7. The shaft 8 is located above the rotating shaft 2, while the power output shaft 3 is connected and located below the transmission block 5. When the rotation of the rotating shaft 2 triggers the power transmission of the transmission block 5, the transmission block 5 swings around the axis of the shaft 8, thereby amplifying the eccentricity of the eccentric body 91, which is reflected in the amplitude of the reciprocating motion of the power output shaft 3.

[0043] In this embodiment, by setting the accommodating cavity 51 and the eccentric seat 10 inside it, during the swinging process of the transmission block 5 and the balance seat 7, the eccentric seat 10 moves upward or downward relative to the accommodating cavity 51, effectively ensuring the smoothness and success of the transmission action.

[0044] An oil hole is provided in the shaft 8 along the axial direction. One end of the oil hole is connected to the outside of the support frame 1 and fitted with a connecting piece. The other end of the oil hole is laterally connected to the rotating structure located between the shaft 8, the transmission block 5, and the balance seat 7.

[0045] In this embodiment, through holes 53 are respectively provided on the transmission block 5 and the balance seat 7, and bearings are installed in the through holes 53 to form a rotatable connection with the shaft 8; by opening the oil hole on the shaft 8, lubrication can be conveniently provided for the rotating structure, reducing friction, reducing vibration, and ensuring smooth operation.

[0046] The eccentric seat 10 has lubrication grooves 101 on both sides of its sidewalls. The lubrication grooves 101 are connected to the connectors 81 fitted to the transmission block 5. The lubrication grooves 101 extend toward the inner wall of the eccentric seat 10 and connect to the rotating structure located between the eccentric seat 10 and the eccentric body 91. Figure 6 The rotating body 102 shown.

[0047] In this embodiment, lubrication is provided between the contact surfaces of the eccentric seat 10 and the accommodating cavity 51 of the transmission block 5 via the connector 81, and the lubricating medium can be carried by the lubrication groove 101 to reduce friction and resistance, effectively ensuring the smooth and silky swinging motion of the transmission block 5; and the lubricating medium is connected to the rotating structure between the eccentric seat 10 and the eccentric body 91 to effectively reduce friction and ensure smooth operation.

[0048] In this embodiment, the rotating body 102 can be a bearing, so that the eccentric seat 10 and the eccentric body 91 of the eccentric sleeve 9 form a rotating connection.

[0049] A transmission mechanism 6 is installed between the transmission block 5 and the power output shaft 3. The transmission mechanism 6 includes a slider 62 that is slidably mounted on the transmission block 5. The slider 62 is rotatably connected to one end of the connecting rod 64 via a rotating shaft 63. The other end of the connecting rod 64 is rotatably connected to the power output shaft 3 via a rotating shaft 65.

[0050] In this embodiment, as the transmission block 5 swings, the slider 62 moves up and down relative to the transmission block 5, and the connecting rod 64, together with the rotating shaft 1 63 and the rotating shaft 2 65, pulls or pushes the power output shaft 3 to perform axial reciprocating motion relative to the support frame 1.

[0051] A screw 61 is rotatably mounted on the transmission block 5, and the screw 61 is screwed into the slider 62.

[0052] In this embodiment, the slider 62 is screwed onto the screw 61, so that the slider 62 will only move up and down relative to the transmission block 5 when a force is applied, and the screw 61 will rotate relative to the transmission block 5, and the slider 62 will move axially relative to the screw 61.

[0053] In this embodiment, a slide rail structure 52 for sliding mounting of the slider 62 can be provided on the transmission blocks 5 on both sides of the screw 61 to guide the movement of the slider 62 relative to the transmission blocks 5.

[0054] A support rod 41 is horizontally mounted on the side of the balance seat 7, and a counterweight assembly 4 is mounted on the support rod 41, forming a counterweight installed on the balance seat 7.

[0055] In this embodiment, the counterweight assembly 4 can be supported on one side of the balance seat 7 via parallel support rods 41, so as to ensure that the counterweight assembly 4 is reliably and stably installed on the support rods 41.

[0056] In this embodiment, the counterweight component 4 can be composed of multiple counterweight pieces with the same or different weights, and the preset weight can be configured according to actual needs.

[0057] In one embodiment, the rotating shaft 2 can be driven to rotate by a rotational power source, such as a motor 23, or the motor 23 can drive the rotating shaft 2 to rotate via a transmission assembly.

[0058] In this embodiment, the transmission assembly can be composed of a driving wheel 21, a driven wheel 22 and a transmission medium. For example, the driving wheel 21 is connected to the output end of the motor 23, and the driven wheel 22 is rotatably mounted on the rotating shaft 2. The driving wheel 21 and the driven wheel 22 are wound together with a synchronous belt, thereby transmitting the rotation of the motor 23 to the rotating shaft 2.

[0059] In this embodiment, the diameter of the driving wheel 21 is smaller than that of the driven wheel 22.

[0060] In this embodiment, the support frame 1 extends inside to form a partition 11, which constitutes two adjacent cavities. One cavity is equipped with a transmission component, and the other cavity is equipped with a transmission block 5, a balance seat 7, a transmission mechanism 6, and other components. The overall structure is compact, making the reciprocating power output mechanism a modular structure.

[0061] In this embodiment, the structure can be arranged according to requirements. For example, the shaft 8 can be installed between the partition 11 and one side wall of the support frame 1, the rotating shaft 2 can be rotatably mounted between the partition 11 and one side wall of the support frame 1 via a bearing, and the power output shaft 3 can be slidably mounted on the wall of the support frame 1 via a linear bearing 31, etc.

[0062] This embodiment also proposes a feeding and smoothing device, such as... Figure 7 As shown, the reciprocating power output mechanism for damping vibration includes any of the above-mentioned components. The end of the power output shaft 3 is equipped with a brush assembly 30 via a shaft assembly 80. It also includes a conveying mechanism 20 and a filling assembly 40 located in front of the brush assembly 30. The filling assembly 40 fills the material into the trough of the conveying mechanism 20. The brush assembly 30 reciprocates in the axial direction of the power output shaft 3 to perform a smoothing action. It is especially suitable for smoothing during the filling of medicine tablets in a laser drilling machine, effectively reducing vibration and ensuring the integrity of the medicine tablets during filling.

[0063] In practical use, a material dropping component 50 can also be set up to intermittently drop a certain amount of material into the filling component 40. As the conveying mechanism 20 is driven along the direction of the arrow in the figure, the material in the filling component 40 is filled into the material trough of the conveying mechanism 20. Combined with the smoothing action of the brush component 30, it helps to ensure the filling effect.

[0064] like Figure 8 and Figure 9As shown, the shaft assembly 80 includes a connecting shaft 801 and a brush shaft 805 axially connected via a linear motion bearing 802. The end of the connecting shaft 801 is connected to the power output shaft 3, and the brush assembly 30 is sleeved on the brush shaft 805. It also includes a rotation drive power 60, which is powered to the brush shaft 805 via a rotation transmission assembly 70. The rotation drive power 60 drives the brush shaft 805 to rotate around its own axis.

[0065] In this embodiment, the connecting shaft 801 and the brush shaft 805 in the shaft assembly 80 are connected by a linear motion bearing 802, so that the axial movement at the power output shaft 3 can be transmitted to the brush shaft 805 via the connecting shaft 801 and the linear motion bearing 802. At the same time, the brush shaft 805 can rotate smoothly and axially under the drive of the rotational power 60.

[0066] In this embodiment, the brush assembly 30, mounted on the brush shaft 805, is driven by the reciprocating power output mechanism to reciprocate along the axial direction of the brush shaft 805. At the same time, the brush assembly 30 also rotates around the axial direction of the brush shaft 805 under the drive of the rotational power 60. Thus, the reciprocating motion and rotation in the axial direction work together to smooth the filler material on the conveying mechanism 20, so that the material is stably filled in the trough of the conveying mechanism 20. This helps to ensure the stability of the material on the conveying mechanism 20 and ensure its positioning accuracy, which is beneficial to the subsequent processing of the material. In particular, the reciprocating power output mechanism solves and cancels the vibration of the brush assembly 30, reducing or even preventing the material from falling off due to vibration.

[0067] A power base 601 is rotatably mounted on the brush shaft 805 via a bearing assembly 804, and a rotation drive power 60 is mounted on the power base 601; a rotation transmission assembly 70 is housed in the power base 601 and connects the output end of the rotation drive power 60 to the power of the brush shaft 805.

[0068] In this embodiment, the rotational drive power 60 is arranged and installed relative to the brush shaft 805 via the power base 601 and the bearing assembly 804. The rotational drive power 60 can move synchronously axially back and forth with the brush shaft 805. During the rotation of the brush shaft 805 driven by the rotational drive power 60, the rotation of the brush shaft 805 will not be affected by the setting of the power base 601.

[0069] In this embodiment, the rotational transmission component 70 is a synchronous belt transmission component connected between the output end of the rotational drive power 60 and the brush shaft 805, wherein one of the pulleys 803 is mounted on the brush shaft 805 to drive the brush shaft 805 to rotate axially.

[0070] In this embodiment, by addressing and mitigating vibration, wear on components during vibration is effectively reduced or even avoided, which helps ensure the reliability of the mechanism, is energy-efficient, and has a compact overall structure, forming a modular structure that is easy to install and use.

[0071] This invention effectively solves the vibration problem, greatly helps to ensure the integrity of tablet feeding and filling, and helps to improve and ensure the reliability and service life of the device.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A reciprocating power output mechanism for canceling vibration, characterized in that: The system includes a support frame (1), a rotating shaft (2) installed inside the support frame (1), the rotating shaft (2) is driven by rotational power to rotate around its own axis; an eccentric sleeve (9) is fitted on the rotating shaft (2), the eccentric sleeve (9) includes two or more eccentric bodies (91), each eccentric body (91) is axially parallel to each other and is spaced apart, the eccentric sleeve (9) is fitted on the rotating shaft (2) through a shaft hole (92); a transmission block (5) and a balance seat (7) are respectively fitted on the two eccentric bodies (91), the transmission block (5) is powered to the power output shaft (3), the power output shaft (3) is slidably fitted on the support frame (1) along the axis, the axis of the power output shaft (3) is perpendicular to the axis of the rotating shaft (2); a counterweight is provided on the balance seat (7).

2. The reciprocating power output mechanism for offsetting vibration as described in claim 1, characterized in that: The circumferential outer wall of each eccentric body (91) is a circular outer circumferential surface, and the axial direction of the circular outer circumferential surface constitutes the axial direction of the eccentric body (91); the axial direction of the eccentric body (91) is parallel to the axial direction of the shaft hole (92) and is spaced apart.

3. The reciprocating power output mechanism for offsetting vibration as described in claim 1, characterized in that: It also includes a shaft (8) installed on the support frame (1), the shaft (8) is arranged parallel to the rotating shaft (2), the transmission block (5) and the balance seat (7) are rotatably fitted with the shaft (8); the transmission block (5) and the balance seat (7) are respectively provided with a receiving cavity (51), the receiving cavity (51) contains an eccentric seat (10), the eccentric seat (10) and the eccentric body (91) are rotatably fitted; the dimension of the receiving cavity (51) in the height direction is greater than the height dimension of the eccentric seat (10), and the two side walls of the eccentric seat (10) are close to the receiving cavity (51).

4. The reciprocating power output mechanism for offsetting vibration as described in claim 3, characterized in that: The shaft (8) has an oil hole along the axial direction. One end of the oil hole is connected to the outside of the support frame (1) and fitted with a connector. The other end of the oil hole is laterally connected to the rotating structure located between the shaft (8) and the transmission block (5) and the balance seat (7). The eccentric seat (10) has a lubrication groove (101) on both sides of its walls. The lubrication groove (101) is connected to the connector (81) fitted on the transmission block (5). The lubrication groove (101) extends toward the inner wall of the eccentric seat (10) and connects to the rotating structure located between the eccentric seat (10) and the eccentric body (91).

5. The reciprocating power output mechanism for offsetting vibration as described in claim 1, characterized in that: A transmission mechanism (6) is installed between the transmission block (5) and the power output shaft (3). The transmission mechanism (6) includes a slider (62) that is slidably mounted on the transmission block (5). The slider (62) is rotatably connected to one end of the connecting rod (64) via a rotating shaft (63). The other end of the connecting rod (64) is rotatably connected to the power output shaft (3) via a rotating shaft (65).

6. The reciprocating power output mechanism for offsetting vibration as described in claim 5, characterized in that: A screw (61) is rotatably mounted on the transmission block (5), and the screw (61) is helically fitted with the slider (62).

7. The reciprocating power output mechanism for offsetting vibration as described in claim 1, characterized in that: The balance seat (7) is laterally fitted with a support rod (41) on its side, and a counterweight assembly (4) is supported on the support rod (41).

8. A feeding and smoothing device, characterized in that: The device includes a reciprocating power output mechanism for absorbing vibration as described in any one of claims 1-7, wherein a brush assembly (30) is mounted on the end of the power output shaft (3) via a shaft assembly (80); it also includes a conveying mechanism (20), a packing assembly (40) located in front of the brush assembly (30), and packing material is fed into the trough of the conveying mechanism (20) by the packing assembly (40), wherein the brush assembly (30) reciprocates in the axial direction of the power output shaft (3) to perform a smoothing action.

9. The feeding and smoothing device as described in claim 8, characterized in that: The shaft assembly (80) includes a connecting shaft (801) axially connected via a linear motion bearing (802) and a brush shaft (805). The end of the connecting shaft (801) is connected to the power output shaft (3), and the brush assembly (30) is sleeved on the brush shaft (805). It also includes a rotational drive power (60), which is powered to the brush shaft (805) via a rotational transmission assembly (70). The rotational drive power (60) drives the brush shaft (805) to rotate around its own axis.

10. The feeding and smoothing device as described in claim 9, characterized in that: The brush shaft (805) is rotatably mounted with a power seat (601) via a bearing assembly (804), and the rotation drive power (60) is installed on the power seat (601); the rotation transmission assembly (70) is housed in the power seat (601) and connects the output end of the rotation drive power (60) to the power of the brush shaft (805).

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