Efficient anti-dripping liquid agent filling machine

Abstract

This invention relates to the field of filling machine technology, specifically disclosing a high-efficiency anti-drip liquid agent filling machine, including a rotary filling mechanism, a feeding mechanism, a discharging mechanism, and a material supply mechanism. The rotary filling mechanism includes a housing and a drive shaft. A turntable body connected to the drive shaft is arranged above the housing. A guide ring plate connected to the feeding mechanism and the discharging mechanism is concentrically arranged around the turntable body. An end ring is arranged at the lower end of the turntable body. Multiple semi-circular notches are evenly opened on the outer surface of the turntable body. A top plate is arranged on the end ring directly below each semi-circular notch. A lifting guide post is connected to the top plate and passes through the end ring. A rotating plate connected to the drive shaft is arranged above the turntable body. A filling nozzle assembly aligned vertically with each semi-circular notch is arranged on the rotating plate. The high-efficiency anti-drip liquid agent filling machine disclosed in this invention, while meeting the above-mentioned high-efficiency rotary filling requirements, also effectively avoids the problems of raw material waste and equipment contamination caused by liquid agent dripping.

Description

Technical Field

[0001] This invention relates to the field of filling machine technology, and specifically discloses a high-efficiency anti-drip liquid filling machine. Background Technology

[0002] Many liquid chemicals, such as metal surface treatment agents, rust removers, and surfactants, need to be bottled and sold after processing. Bottled products for these liquid chemicals require filling machines. To improve filling efficiency, existing filling machines immediately remove the filling nozzle from the bottle opening after filling and then place a new bottle under the nozzle. However, residual liquid in the nozzle drips onto the worktable during this bottle switching process, resulting in material waste and easily contaminating the worktable.

[0003] Utility model patent application number 2016206650652 discloses a rotary filling machine, including a rotary disk assembly and a filling device disposed on the upper end of the rotary disk assembly for filling empty bottles entering the rotary disk assembly. The rotary disk assembly is provided with an automatic bottle feeding mechanism on its side. The automatic bottle feeding mechanism includes a frame, a feeding assembly disposed on the frame, and a blocking assembly disposed at the outlet of the feeding assembly. The blocking assembly includes a first blocking block and a second blocking block movably connected to the first blocking block. The bottom of the first blocking block is provided with a flipping cylinder and a fixing plate. The piston head of the flipping cylinder is hinged to the bottom of the first blocking block. The cylinder seat of the flipping cylinder is fixedly disposed on the frame. The fixing plate is provided with a position adjusting assembly movably connected to the bottom of the second blocking block for adjusting the position of the second blocking block. While the rotary filling machine disclosed in this patent achieves automatic feeding of empty bottles, when used for efficient filling of liquid pharmaceuticals, it immediately rotates away after the bottle is filled with pharmaceuticals. At this point, the liquid remaining on the inner wall of the filling nozzle has not yet had time to drip down, making it prone to leakage during the switching of empty bottles. Preventing leakage requires extending the pause time of the bottle after filling, which prevents efficient filling of liquid pharmaceuticals. Therefore, to address the above-mentioned shortcomings of existing rotary filling machines, this application proposes a high-efficiency anti-drip liquid filling machine that effectively solves the aforementioned technical problems. Summary of the Invention

[0004] The present invention aims to provide a high-efficiency anti-drip liquid filling machine to solve the shortcomings of existing rotary filling machines that cannot simultaneously achieve high-efficiency filling and anti-drip functions when used for liquid filling.

[0005] This invention is achieved through the following technical solution:

[0006] A high-efficiency anti-drip liquid filling machine includes a rotary filling mechanism, a feeding mechanism, a discharging mechanism, and a feeding mechanism. The rotary filling mechanism includes a housing and a drive shaft. The housing is equipped with a rotary drive device to realize the rotation of the drive shaft. A turntable body connected to the drive shaft is arranged above the housing. A guide ring plate connected to the feeding mechanism and the discharging mechanism is concentrically arranged around the turntable body. An end ring is arranged at the lower end of the turntable body. Multiple semi-circular slots are evenly opened on the outer circular surface of the turntable body. A top plate is arranged on the upper surface of the end ring directly below each semi-circular slot. A lifting guide column is connected to the top plate and passes through the end ring. A rotating plate connected to the drive shaft is arranged above the turntable body. A filling nozzle assembly aligned vertically with each semi-circular slot is arranged on the rotating plate.

[0007] The filling nozzle assembly includes a filling nozzle tube fixedly connected to a rotating plate. A sealing piston is provided in the inner cavity of the filling nozzle tube. A piston rod extending from the top of the filling nozzle tube is connected to the sealing piston. A connecting pipe end is provided on the filling nozzle tube. A vertical rigid tube is fixed at the center of the rotating plate. A radial connecting pipe is provided between the lower end of the vertical rigid tube and each connecting pipe end. The upper end of the vertical rigid tube is sealed and rotatably connected to the feeding mechanism. A first annular guide assembly is provided on the upper surface of the machine housing, which interacts with the lifting guide column and realizes the upward movement of the lifting guide column. A fixed frame is provided on the machine housing. A second annular guide assembly is provided on the fixed frame, which interacts with the piston rod and realizes the piston rod and the lifting guide column move upward synchronously.

[0008] As a further provision of the above solution, the first annular guide assembly includes a lower cylindrical block fixed to the upper surface of the chassis, and a guide ring groove is formed on the outer circular surface of the lower cylindrical block. The lower end of the lifting guide column is provided with a first guide wheel extending into the guide ring groove. The second annular guide assembly includes an upper cylindrical block fixed to the top of the fixing frame, and a guide ring groove is also formed on the outer circular surface of the upper cylindrical block. The upper end of the piston rod is provided with a second guide wheel extending into the guide ring groove.

[0009] The guide ring groove includes a horizontal ring segment and an upper convex ring segment. The upper convex ring segment is composed of a first inclined segment, a horizontal top segment, and a second inclined segment arranged in sequence, and the lower ends of the first inclined segment and the second inclined segment are respectively connected to the two ends of the horizontal ring segment.

[0010] As a further provision of the above scheme, the first annular guide assembly includes a lower guide ring block fixed to the upper surface of the chassis. The upper end of the lower guide ring block is provided with an upwardly protruding part. The lower end of the lifting guide column is provided with a first abutting wheel that abuts against the lower guide ring block. A first spring is provided between the lifting guide column and the end ring. The second annular guide assembly includes an upper guide ring block fixed to the top of the fixing frame. The lower end of the upper guide ring block is provided with an upwardly concave recess. The upper end of the piston rod is provided with a second abutting wheel that abuts against the upper guide ring block. A second spring is provided in the filling nozzle assembly to realize the piston rod reset.

[0011] As a further provision of the above scheme, a positioning ring is provided on the lifting guide post located below the end ring, the first spring is provided on the lifting guide post between the positioning ring and the end ring, and the second spring is provided between the upper surface of the sealing piston and the top wall of the inner cavity of the filling nozzle tube.

[0012] As a further provision of the above scheme, the feeding mechanism includes a storage tank, a conveying pipe and a conveying pump. The two ends of the conveying pipe are respectively connected to the storage tank and the conveying pump. The discharge end of the conveying pump is rotatably connected to a sealed bearing at the upper end of a vertical rigid pipe through a pipe.

[0013] As a further provision of the above scheme, the feeding mechanism and the discharging mechanism are connected close to each other at two adjacent workstations on the guide ring plate.

[0014] As a further feature of the above scheme, both the feeding mechanism and the discharging mechanism include a conveying seat connected to the guide ring plate, and a support frame is connected to the lower surface of the conveying seat.

[0015] As a further feature of the above scheme, a feeding motor is fixed to the side of the conveyor seat on the feeding mechanism, and a feeding turntable extending into the conveyor seat is provided on the motor shaft of the feeding motor. A feeding slot is provided on the outer circumference of the feeding turntable.

[0016] The high-efficiency anti-drip liquid filling machine disclosed in this invention uses a feeding mechanism to feed empty bottles into a rotary filling mechanism. During the rotation of the turntable, the empty bottles are guided into a guide ring plate through a semi-circular notch on its outer surface. As the empty bottles rotate with the turntable, when they reach the filling station, the lifting guide column moves upward under the action of the first annular guide assembly, pushing the empty bottle on the top plate to the upper filling nozzle assembly for docking. Simultaneously, the piston rod moves upward under the action of the second annular guide assembly, causing the sealing piston inside the filling nozzle tube to also move upward, opening the connection between the connecting pipe end and the filling nozzle tube. Then, with the added force of the feed pump, the liquid medicine in the vertical rigid pipe is transported along the radial connecting pipe to the filling nozzle tube, thus filling the empty bottle through the filling nozzle tube.

[0017] As the bottle rotates past the filling station with the turntable, the lifting guide column moves downward under the action of the first annular guide assembly, thus resetting the bottle. Simultaneously, the piston rod also moves downward under the action of the second annular guide assembly, pushing the sealing piston to seal the connection between the connecting pipe and the filling nozzle, indicating that filling is complete. During the continued rotation, the upper end of the bottle remains aligned with the filling nozzle assembly. In the subsequent rotational conveying process, the bottle effectively receives liquid medication dripping from the filling nozzle assembly, effectively preventing leakage. Finally, when the bottle moves to the discharge mechanism, the guide plate inside the guide ring plate guides it into the discharge mechanism and sends it to the next capping station for sealing. Beneficial effects

[0018] The high-efficiency anti-drip liquid filling machine disclosed in this invention, through the special design of the rotary filling mechanism, enables the filling process to be completed during the rotation and conveying of the bottle, without stopping the filling process, thereby greatly improving the filling efficiency of liquid medicines.

[0019] The high-efficiency anti-drip liquid filling machine disclosed in this invention, while meeting the above-mentioned high-efficiency rotary filling requirements, can also ensure that the upper opening of the bottle is always aligned with the filling nozzle assembly during the bottle conveying process. This allows the residual hydraulic agent in the filling nozzle assembly to drip into the bottle after filling, effectively avoiding the problems of raw material waste and equipment contamination caused by liquid agent leakage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle;

[0022] Figure 2 This is a schematic diagram of the second-angle three-dimensional structure of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the feeding mechanism, discharging mechanism, and guide ring plate in this invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the rotary filling mechanism in this invention;

[0025] Figure 5This is a three-dimensional structural diagram of the drive shaft, turntable, filling nozzle assembly, etc. from a first angle in this invention;

[0026] Figure 6 This is a schematic diagram of the second-angle three-dimensional structure of the drive shaft, turntable, filling nozzle assembly, etc. in this invention;

[0027] Figure 7 This is a three-dimensional cross-sectional structural diagram of the filling nozzle assembly in this invention;

[0028] Figure 8 This is a partial three-dimensional structural diagram of the rotary filling mechanism in Embodiment 2 of the present invention. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-8 This application will be described in detail with reference to the embodiments. Example 1

[0031] Example 1 discloses a high-efficiency anti-drip liquid filling machine, see attached figure. Figure 1 and attached Figure 2 It includes a rotary filling mechanism 100, a feeding mechanism 200, a discharging mechanism 300 and a feeding mechanism 400. The feeding mechanism 200 and the discharging mechanism 300 are respectively connected to the feeding end and the discharging end of the rotary filling mechanism 100, and then the feeding mechanism 400 is connected to the top of the rotary filling mechanism 100 from top to bottom.

[0032] Reference Appendix Figure 3 - Appendix Figure 6The rotary filling mechanism 100 includes a base 101, a lower cylindrical block 103 fixed on the upper surface of the base 101, an L-shaped fixing frame 102 fixed on the side of the base 101, and an upper cylindrical block 104 aligned vertically with the lower cylindrical block 103 fixed at the top of the fixing frame 102. Guide ring grooves 105 are formed on the outer surfaces of both the lower cylindrical block 103 and the upper cylindrical block 104. Each guide ring groove 105 consists of a horizontal ring segment 1051 and an upper convex ring segment 1052. The upper convex ring segment 1052 is composed of a first inclined segment, a horizontal top segment, and a second inclined segment arranged sequentially. The lower ends of the first and second inclined segments are respectively connected to the two ends of the horizontal ring segment 1051.

[0033] A guide ring plate 106 is concentrically arranged between the lower cylindrical block 103 and the upper cylindrical block 104, and the guide ring plate 106 is fixedly connected to the feeding mechanism 200 and the discharging mechanism 300, so that the guide ring plate 106 is fixed as a whole. A turntable body 107 is concentrically arranged inside the guide ring plate 106, forming an annular channel for conveying the bottle between the turntable body 107 and the inner wall of the guide ring plate 106. An end ring 108 is connected to the lower end of the turntable body 107, and the end ring 108 fits against the lower opening of the guide ring plate 106 to seal the lower end of the guide ring plate 106. Multiple semi-circular notches 1071 are arranged in a ring array on the outer surface of the turntable 107, allowing the bottle to rotate within the annular channel along with the turntable 107 under the action of the semi-circular notches 1071. The specific number of semi-circular notches 1071 is determined by the diameter of the turntable 107 and the size of the semi-circular notches 1071, and is generally set between 6 and 20. A top plate groove is provided on the end ring 108 directly below each semi-circular notch 1071, and a top plate 109 is provided in the top plate groove to lift the bottle upward along the semi-circular notch 1071. A lifting guide post 110, penetrating the end ring 108, is connected to the lower surface of the top plate 109. A first end block 111 is connected to the lower end of the lifting guide post 110. A first guide wheel 112 is rotatably connected to the side of the first end block 111 facing the lower cylindrical block 103, and the first guide wheel 112 is inserted into the guide ring groove 105 in the lower cylindrical block 103. A rotating plate 113 is concentrically arranged between the turntable body 107 and the upper cylindrical block 104. Filling nozzle assemblies 114, which are vertically aligned with each semi-circular notch 1071, are uniformly fixed on the outer circumference of the rotating plate 113.

[0034] For a detailed structural reference of the filling nozzle assembly 114, please see the attached document. Figure 7It includes a filling nozzle tube 1141, a cylindrical cavity is formed inside the filling nozzle tube 1141, and a sealing piston 1142 is set in the cylindrical cavity. At the same time, a piston rod 1143 extending out of the top of the filling nozzle tube 1141 is concentrically arranged on the upper surface of the sealing piston 1142. A second end block 1144 is connected to the upper end of the piston rod 1143. A second guide wheel 1145 is connected to the side of the second end block 1144 facing the upper cylindrical block 104 and is inserted into the guide ring groove 105 in the upper cylindrical block 104. Finally, a connecting pipe end 1146 is connected to the side of the filling nozzle tube 1141 facing the central axis of the rotating plate 113. When the sealing piston 1142 moves to the position of the connecting pipe end 1146, it can seal it. A vertical rigid tube 115 is fixedly installed at the center of the rotating plate 113. The lower end of the vertical rigid tube 115 is sealed, and the upper end is connected to a sealed bearing 116. Then, a radial connecting tube 117 is connected between the lower end of the vertical rigid tube 115 and the connecting tube end 1146 in each filling nozzle assembly 114.

[0035] A drive shaft 118 is rotatably connected in the base 101. The drive shaft 118 passes through the lower cylindrical block 103 and is fixedly connected to the lower end of the turntable body 107, the end ring 108 and the vertical rigid tube 115. A rotary drive device (not shown in the figure) is also provided in the base 101 to realize the rotation of the drive shaft 118 at a set speed.

[0036] Reference Appendix Figure 2 The feeding mechanism 400 includes a storage tank 401, a conveying pipe 402, and a conveying pump 403. The conveying pump 403 is fixedly installed on the top of the fixed frame 102. Then, the two ends of the conveying pipe 402 are connected to the storage tank 401 and the conveying pump 403 respectively. Finally, the discharge end of the conveying pump 403 is connected to the sealed bearing 116 at the upper end of the vertical rigid pipe 115 through a pipe.

[0037] In this embodiment, both the feeding mechanism 200 and the discharging mechanism 300 are conventional designs, each including a conveyor seat 201 connected to the guide ring plate 106 and a support frame 202 for supporting the conveyor seat 201. To ensure that the bottle is aligned vertically with the filling nozzle assembly 114 as much as possible after filling, the feeding mechanism 200 and the discharging mechanism 300 are connected close to each other at two adjacent stations of the guide ring plate 106, so that the bottle is rotated nearly one revolution in the rotary filling mechanism 100 before being discharged from the discharging mechanism 300.

[0038] In addition, in order to ensure that the feeding mechanism 200 accurately feeds the empty bottles, a feeding motor 203 is fixedly installed on the side of the conveyor seat 201 in the feeding mechanism 200. The feeding motor 203 can be a servo motor. Then, a feeding turntable 204 is connected to the motor shaft of the servo motor. The feeding turntable 204 is fed into the conveyor seat 201 and a feeding slot is opened on the outer circular surface of the feeding turntable 204.

[0039] In the operation of the high-efficiency anti-drip liquid filling machine disclosed in Embodiment 1, empty bottles are fed into the feeding mechanism 200 by the feeding machine. Then, under the action of the feeding motor 203 and the feeding turntable 204, one empty bottle is pushed into the rotary filling mechanism 100 at a time and located on the upper surface of the top plate 109.

[0040] During operation, the rotary filling mechanism 100 is driven by a rotary drive device to make the drive shaft 118 rotate at a constant speed. The drive shaft 118 enables the turntable 107, end ring 108, and rotating plate 113 to rotate synchronously. When the empty bottle on the top plate 109 moves to the position of the upper convex ring section 1052 in the guide ring groove 105, the lifting guide column 110 and the top plate 109 move upward along the semi-circular notch 1071 under the action of the first guide wheel 112 and the second guide wheel 1145, thereby pushing the bottle mouth of the empty bottle to dock with the filling nozzle assembly 114. At the same time, under the action of piston rod 1143, the sealing piston 1142 in filling nozzle tube 1141 is lifted upward, thereby opening the connection between pipe end 1146 and filling nozzle tube 1141. At this time, under the pressure of feed pump 403, the liquid will enter the filling nozzle tube 1141 below the sealing piston 1142 through radial connecting pipe 117, and then the liquid will be filled into the empty bottle through filling nozzle tube 1141.

[0041] As the rotary filling mechanism 100 continues to operate, the first guide wheel 112 and the second guide wheel 1145 move to the horizontal ring segment 1051 in the guide ring groove 105. At this time, the lifting guide column 110 and the top plate 109 descend and reset, causing the bottle mouth to separate from the filling nozzle assembly 114. The sealing piston 1142 in the filling nozzle assembly 114 also resets and seals the bottle, completing the filling process. During the continued conveying process after filling, since the filling nozzle assembly 114 remains aligned vertically with the bottle mouth, the remaining medicine in the filling nozzle assembly 114 will gather and drip into the bottle, effectively preventing leakage. Example 2

[0042] Example 2 discloses another specific implementation of the rotary filling mechanism 100 based on the technical solution in Example 1. The similarities between Example 2 and Example 1 will not be described again.

[0043] Reference Appendix Figure 7 and attached Figure 8 In this embodiment, a lower guide ring block 119 is fixedly installed on the upper surface of the base 101 to replace the lower cylindrical block 103, and an upper guide ring block 120 is fixedly installed on the top of the fixing frame 102 to replace the upper cylindrical block 104. An upwardly protruding protrusion 1191 is provided at the upper end of the lower guide ring block 119, and the shape of this protrusion 1191 is the same as the upper convex ring segment 1052 of the lower cylindrical block 103 in Embodiment 1. An upwardly concave recess 1201 is provided at the lower end of the upper guide ring block 120, and the shape of this recess 1201 is also the same as the upper convex ring segment 1052 of the upper cylindrical block 104 in Embodiment 1.

[0044] In addition, this embodiment improves the structure of the filling nozzle assembly 114 by providing a first spring 1147 between the upper surface of the sealing piston 1142 and the top wall of the columnar cavity of the filling nozzle tube 1141. The first spring 1147 plays a reset role. Then, a first abutting wheel 1148 that abuts against the upper guide ring block 120 is provided directly on the top of the piston rod 1143.

[0045] A limit ring 1081 is provided on the lifting guide column 110 below the end ring 108. Then, a second spring 121 is provided on the lower surface of the limit ring 1081 and the end ring 108. The second spring 121 also plays a limiting role. Then, a second abutting wheel 122 that abuts against the lower guide ring block 119 is provided directly at the bottom of the lifting guide column 110.

[0046] The function of the above-mentioned scheme in Embodiment 2 is the same as that of the lower cylindrical block 103, upper cylindrical block 104 and guide ring groove 105 in Embodiment 1, so that the bottle can be automatically lifted by the top plate 109 and docked with the filling nozzle assembly 114 during the filling process, and the inside of the filling nozzle assembly 114 can be automatically opened for filling. After filling is completed, the bottle is automatically reset and the filling nozzle assembly 114 is sealed.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency anti-drip liquid filling machine, comprising a rotary filling mechanism, a feeding mechanism, a discharging mechanism, and a supplying mechanism, characterized in that, The rotary filling mechanism includes a housing and a drive shaft. The housing is equipped with a rotary drive device to realize the rotation of the drive shaft. A turntable body connected to the drive shaft is arranged above the housing. A guide ring plate connected to the feeding mechanism and the discharging mechanism is concentrically arranged around the turntable body. An end ring is arranged at the lower end of the turntable body. Multiple semi-circular slots are evenly opened on the outer circular surface of the turntable body. A top plate is arranged on the upper surface of the end ring directly below each semi-circular slot. A lifting guide column is connected to the top plate and passes through the end ring. A rotating plate connected to the drive shaft is arranged above the turntable body. A filling nozzle assembly is arranged on the rotating plate and aligned vertically with each semi-circular slot. The filling nozzle assembly includes a filling nozzle tube fixedly connected to a rotating plate. A sealing piston is installed inside the filling nozzle tube, and a piston rod extending from the top of the filling nozzle tube is connected to the sealing piston. A connecting pipe end is provided on the filling nozzle tube. A vertical rigid tube is fixed at the center of the rotating plate. A radial connecting pipe is provided between the lower end of the vertical rigid tube and each connecting pipe end. The upper end of the vertical rigid tube is rotatably and sealingly connected to the feeding mechanism. A first annular guide assembly is provided on the upper surface of the machine housing, interacting with the lifting guide column and enabling the lifting guide column to move upward. A fixed frame is provided on the machine housing, and a second annular guide assembly is provided on the fixed frame, interacting with the piston rod and enabling the piston rod and the lifting guide column to move upward synchronously. A connecting pipe end is connected to the side of the filling nozzle tube facing the central axis of the rotating plate, which can seal the connecting pipe end when the sealing piston moves to its position. The first annular guide assembly includes a lower cylindrical block fixed to the upper surface of the chassis. A guide ring groove is formed on the outer circular surface of the lower cylindrical block. A first guide wheel extending into the guide ring groove is provided at the lower end of the lifting guide column. The second annular guide assembly includes an upper cylindrical block fixed to the top of the fixing frame. A guide ring groove is also formed on the outer circular surface of the upper cylindrical block. A second guide wheel extending into the guide ring groove is provided at the upper end of the piston rod. The guide ring groove includes a horizontal ring segment and an upper convex ring segment. The upper convex ring segment is composed of a first inclined segment, a horizontal top segment, and a second inclined segment arranged in sequence, and the lower ends of the first inclined segment and the second inclined segment are respectively connected to the two ends of the horizontal ring segment.

2. The high-efficiency anti-drip liquid filling machine according to claim 1, characterized in that, The first annular guide assembly includes a lower guide ring block fixed to the upper surface of the chassis. The upper end of the lower guide ring block is provided with an upwardly protruding part. The lower end of the lifting guide column is provided with a first abutting wheel that abuts against the lower guide ring block. A first spring is provided between the lifting guide column and the end ring. The second annular guide assembly includes an upper guide ring block fixed to the top of the fixing frame. The lower end of the upper guide ring block is provided with an upwardly concave recess. The upper end of the piston rod is provided with a second abutting wheel that abuts against the upper guide ring block. A second spring is provided in the filling nozzle assembly to realize the piston rod reset.

3. The high-efficiency anti-drip liquid filling machine according to claim 2, characterized in that, A positioning ring is provided on the lifting guide post located below the end ring. The first spring is provided on the lifting guide post between the positioning ring and the end ring. The second spring is provided between the upper surface of the sealing piston and the top wall of the inner cavity of the filling nozzle tube.

4. The high-efficiency anti-drip liquid filling machine according to claim 1, characterized in that, The feeding mechanism includes a storage tank, a conveying pipe, and a conveying pump. The two ends of the conveying pipe are connected to the storage tank and the conveying pump, respectively. The discharge end of the conveying pump is rotatably connected to a sealed bearing at the upper end of a vertical rigid pipe through a pipe.

5. The high-efficiency anti-drip liquid filling machine according to claim 1, characterized in that, The feeding mechanism and the discharging mechanism are connected close to each other at two adjacent workstations on the guide ring plate.

6. The high-efficiency anti-drip liquid filling machine according to claim 5, characterized in that, Both the feeding mechanism and the discharging mechanism include a conveying seat connected to the guide ring plate, and a support frame is connected to the lower surface of the conveying seat.

7. The high-efficiency anti-drip liquid filling machine according to claim 1, characterized in that, A feeding motor is fixed to the side of the conveyor seat on the feeding mechanism. A feeding turntable that extends into the conveyor seat is provided on the motor shaft of the feeding motor. A feeding slot is provided on the outer circumference of the feeding turntable.

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