A chuck for a wheel disc liquid filling machine

Abstract

The utility model relates to a kind of wheel disc type liquid canning machine clamp, including mainframe, motor, transmission assembly, tray, lock disc and lock, motor is installed in mainframe and is connected with transmission assembly, transmission assembly is sequentially connected with tray and lock disc from the side close to ground, recess is equipped on tray, notch is equipped on lock disc, the projection of notch on tray coincides with recess, lock is installed in one side of notch;Mainframe side butt joint conveying belt, the height of tray and container on conveying belt is same, the container entering clamp is placed on recess, located in notch. Compared with prior art, the utility model has the advantages that the container is automatically clamped by the lock, the tray is driven by the transmission assembly to rotate the container to different stations, and the canning, sealing and other operations are performed. The clamping, filling, sealing and dispensing functions of the container are integrated into one clamp, greatly reducing the overall size of the filling system.

Description

Technical Field

[0001] This utility model relates to liquid filling, and more particularly to a clamp for a disc-type liquid filling machine. Background Technology

[0002] Traditional liquid filling machines employ a straight guide rail structure, requiring clamping, filling, and sealing to be completed in separate areas, resulting in a large footprint. Their working principle is as follows: a motor acts as the power source, driving a grooved wheel indexing mechanism, which in turn drives the main drive wheel of the flatbed conveyor via a chain drive, thus moving the entire flatbed machine. This transmission system is bulky and uses chain drives, leading to inaccurate positioning. This results in the machine's overall positioning accuracy falling short of ideal requirements, preventing the target liquid from being accurately filled into the containers. Consequently, this causes leakage and loss of the target liquid, and significant deviations in the liquid volume within each container.

[0003] A search revealed that application publication number CN109231129A discloses an integrated bottle rinsing, filling, and capping machine. Specifically, it discloses: a first transfer plate is provided at one end of the feeding conveyor belt; the output end of the first transfer plate is connected to a bottle rinsing mechanism; the output end of the bottle rinsing mechanism is connected to a second transfer plate group that cooperates with the bottle rinsing mechanism; the output end of the second transfer plate group is connected to a filling mechanism; the output end of the filling mechanism is connected to a third transfer plate; a bottle cap conveying mechanism is provided at the output end of the third transfer plate; and the output end of the third transfer plate is connected to a capping mechanism. This integrates the previously long production line into a single integrated bottle rinsing, filling, and capping machine. However, this prior art has a low degree of integration and still occupies a relatively large volume.

[0004] In summary, the technical problem that needs to be solved is how to design a highly integrated fixture for a liquid filling machine. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of existing liquid filling machines, such as large structure and inaccurate positioning accuracy, and to provide a clamp for a disc-type liquid filling machine.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] According to one aspect of this utility model, a clamp for a rotary liquid filling machine is provided, located on one side of a conveyor belt, on which a container to be filled is placed. The clamp includes a main frame, a motor, a transmission assembly, a tray, a locking disc, and a lock. The motor is installed in the main frame and connected to the transmission assembly. The transmission assembly is sequentially connected to the tray and the locking disc starting from the side closest to the ground. The tray has a groove, and the locking disc has a notch. The projection of the notch on the tray coincides with the groove. The lock is installed on one side of the notch. One side of the main frame is connected to the conveyor belt. The height of the tray and the container on the conveyor belt are the same. The container entering the clamp is placed on the groove and located within the notch.

[0008] As a preferred technical solution, the transmission assembly includes a gear set, a rotating shaft, a guide rail disc, and an isolation ring; the motor and the rotating shaft are connected by a gear set, the guide rail disc and the isolation ring are mounted on the rotating shaft, the tray is mounted on the edge of the guide rail disc, and the lock disc is mounted on the isolation ring; the rotating shaft passes through the axis of the main frame and a bearing is installed between it and the main frame.

[0009] As a preferred technical solution, the gear set includes a driving gear and a driven gear that mesh with each other, the driving gear is connected to the motor output shaft, and the driven gear is sleeved on the rotating shaft.

[0010] As a preferred technical solution, the motor includes three stepper motors, with the axis of the rotating shaft as the center, and two adjacent stepper motors are mounted on the main frame at an angle of 120°. The drive gear is connected to the output shaft of the stepper motor through a hook wedge key.

[0011] As a preferred technical solution, the rotating shaft is provided with a first protrusion in the middle and the guide rail is provided with a first fixing hole in the middle. The first protrusion passes through the first fixing hole and cooperates with the first fixing hole.

[0012] As a preferred technical solution, the isolation ring is provided with a second protrusion and a third protrusion, and the lock disc is provided with a second fixing hole. The second protrusion passes through the second fixing hole and cooperates with the second fixing hole; the third protrusion passes through the third fixing hole and cooperates with the first fixing hole.

[0013] As a preferred technical solution, the lock includes a latch base and a latch connected by a latch pivot and a latch pivot bearing. The latch base is installed on one side of the notch of the lock disc. A spring is connected between the latch pivot and the latch base and the lock disc.

[0014] As a preferred technical solution, the latch is arc-shaped, divided into a longer first part and a shorter second part by the latch pivot; the latch includes a first state and a second state. When the latch is in the first state, the first part extends to the outside of the main frame, and the second part is located inside the notch and separated from the inner wall of the notch; when the latch is in the second state, the first part abuts against the baffle on the main frame, forming a container placement area with the notch, and the second part fits against the inner wall of the notch, with the container located in the container placement area.

[0015] As a preferred technical solution, the main frame is cylindrical in shape, with a bearing sleeve at the center of the side closest to the ground and an annular tray support on the side away from the ground. The tray support is divided into a first area and a second area with different heights. The transmission component is located inside the tray support, and a baffle is provided around the side of the tray support away from the ground. A pair of angular contact ball bearings with opposite installation directions are provided inside the bearing sleeve. The tray is located on the tray support, and the tray and the lock plate are located inside the baffle.

[0016] As a preferred technical solution, there are five trays, and each tray has multiple grooves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) This utility model automatically clamps containers using a lock, and drives the tray through a transmission component to rotate the containers to different workstations for filling, sealing and other operations. It integrates the functions of clamping, filling, sealing and dispensing containers into one fixture, which greatly reduces the overall volume of the filling system.

[0019] 2) The transmission system of this utility model adopts gear transmission, which has high positioning accuracy and avoids inaccurate filling liquid volume or leakage loss; the three component motors drive simultaneously and serve as backups for each other, ensuring that the system has higher robustness.

[0020] 3) The rotating shaft and the guide rail disc of this utility model are connected by a first protrusion, and the isolation ring and the lock disc are connected by a second protrusion. The first and second protrusions act as a key, so that the rotating shaft drives the guide rail disc and the lock disc to rotate together.

[0021] 4) The locking mechanism of this utility model includes a first state and a second state. The spring hook keeps the locking mechanism in an open state. When the locking mechanism is in the first state, the first part of the locking mechanism closes when it contacts the main frame baffle, guiding the container on the conveyor belt to the filling position and clamping it. When the locking mechanism is in the second state, the second part of the locking mechanism pushes the container out, thus realizing the automatic clamping and dispensing of the container.

[0022] 5) This utility model has five trays, and during operation, it always maintains a state of one group filling, one group sealing, one group dispensing, one group waiting, and one group clamping the container, thus realizing the multiple functions of the clamp. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a clamp for a disc-type liquid filling machine according to this utility model;

[0024] Figure 2 This is a front view of a clamp for a disc-type liquid filling machine according to this utility model;

[0025] Figure 3 This is a top view of a clamp for a disc-type liquid filling machine according to the present invention;

[0026] Figure 4 This is a cross-sectional view of a clamp for a disc-type liquid filling machine according to this utility model;

[0027] Figure 5 This is a front view of the main frame of this utility model;

[0028] Figure 6 This is a top view of the main frame of this utility model;

[0029] Figure 7 This is a sectional view of the main frame of this utility model;

[0030] Figure 8 This is a front view of the output gear of this utility model;

[0031] Figure 9 This is a cross-sectional view of the output gear of this utility model;

[0032] Figure 10 This is a front view of the rotating shaft of this utility model;

[0033] Figure 11 This is a top view of the rotating shaft of this utility model;

[0034] Figure 12 This is a sectional view of the rotating shaft of this utility model;

[0035] Figure 13 This is the main view of the guide rail disk of this utility model;

[0036] Figure 14 This is a cross-sectional view of the guide rail disc of this utility model;

[0037] Figure 15 This is a front view of the isolation ring of this utility model;

[0038] Figure 16 This is a sectional view of the isolation ring of this utility model;

[0039] Figure 17This is a front view of the tray of this utility model;

[0040] Figure 18 This is a top view of the tray of this utility model;

[0041] Figure 19 This is a side view of the tray of this utility model;

[0042] Figure 20 This is a cross-sectional view of the tray of this utility model;

[0043] Figure 21 This is a front view of the lock disc of this utility model;

[0044] Figure 22 This is a top view of the lock disc of this utility model;

[0045] Figure 23 This is a cross-sectional view of the lock disc of this utility model;

[0046] Figure 24 This is a schematic diagram of the lock structure of this utility model;

[0047] Figure 25 This is the main view of the lock of this utility model;

[0048] Figure 26 This is a side view of the lock of this utility model;

[0049] Figure 27 This is a sectional view of the lock of this utility model;

[0050] Figure 28 This is a schematic diagram of the locking structure of this utility model;

[0051] Figure 29 This is a front view of the locking base of this utility model;

[0052] Figure 30 This is a top view of the locking base of this utility model;

[0053] Figure 31 This is a side view of the locking base of this utility model;

[0054] Figure 32 This is a sectional view of the locking base of this utility model;

[0055] Figure 33 This is a schematic diagram of the locking shaft structure of this utility model;

[0056] Figure 34 This is a sectional view of the main frame of the present invention;

[0057] The numbers in the diagram are as follows:

[0058] 1. Main frame; 10. Bearing sleeve; 11. Tray support; 110. First area; 111. Second area; 12. Baffle; 20. Driven gear; 21. Shaft; 210. First protrusion; 22. Guide rail plate; 220. First fixing hole; 23. Isolation ring; 230. Second protrusion; 231. Third protrusion; 3. Tray; 30. Groove; 4. Locking plate; 40. Notch; 41. Second fixing hole; 50. Locking shaft; 51. Locking shaft bearing; 52. Locking base; 53. Lock; 530. First part; 540. Second part. Detailed Implementation

[0059] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0060] like Figures 1-4 As shown, this utility model provides a clamp for a disc-type liquid filling machine, located on one side of the conveyor belt, including a main frame 1, a motor, a transmission assembly, a tray 3, a locking disc 4, and a locking device. This utility model integrates the automatic clamping, filling, sealing, and dispensing functions of containers into a single system, and can perform precise indexing.

[0061] like Figures 5-7 As shown, the main frame 1 is cylindrical in shape, with three motor mounting rings at the bottom for mounting the motor. A bearing sleeve 10 is located at the center of the bottom, where a pair of angular contact ball bearings are mounted in reverse. A circular tray support 11 is located at the top of the main frame 1, which supports the tray 3 while also reinforcing the retaining ring and lifting the tray 3. The tray 3 is positioned above the tray support 11. Figure 34 As shown, the pallet support 11 includes a first region 110 and a second region 111. The first region 110 is higher than the second region 111, and a transition arc is provided between the first region 110 and the second region 111. The pallet 3 is located on the pallet support 11. When the pallet 3 rotates to the first region 110, it is lifted; when it rotates to the second region 111, it falls. An annular baffle 12 is provided around the top of the pallet support 11. The pallet 3 and the locking disc 4 are located inside the baffle 12. The baffle 12 is responsible for closing the normally open latch 53 in the working area. The side of the main frame 1 that connects to the conveyor belt does not have a baffle 12.

[0062] The motor includes three stepper motors. With the axis of the rotating shaft 21 as the center, two adjacent stepper motors are mounted on the main frame 1 at an angle of 120°. The three motors output power simultaneously and serve as backups for each other. The motors are controlled to rotate intermittently through a predetermined program, thereby realizing automatic clamping of containers in groups, lifting of containers before filling and sealing, precise positioning during filling and sealing, and delivery of finished products after sealing.

[0063] The transmission assembly includes a gear set, a rotating shaft 21, a guide rail disc 22, and an isolation ring 23; the guide rail disc 22 and the isolation ring 23 are mounted on the rotating shaft 21, the tray 3 is mounted on the edge of the guide rail disc 22, and the lock disc 4 is mounted on the isolation ring 23; a bearing is installed between the rotating shaft 21 and the main frame 1.

[0064] The gear set includes a driving gear and a driven gear 20. The driving gear consists of three small spur gears, such as... Figure 8 and Figure 9 As shown, the driven gear 20 is a large spur gear with a C-type hub, connected to the main shaft via a GB / T 1096B flat key. Three small gears are connected to the output shaft of the stepper motor via GB / T 2003 hook-shaped wedge keys. Each of the three small gears meshes with the large gear, and the stepper motor drives the small gears to rotate, simultaneously causing the large gear and the main shaft to rotate. The hub of the large gear directly contacts the central ring of the main shaft and the inner retaining ring of the bearing, providing support.

[0065] like Figures 10-12 As shown, a first protrusion 210 is provided in the middle of the rotating shaft 21. The first protrusion 210 includes an annular protrusion located on the middle surface of the rotating shaft 21 and a cylindrical protrusion located on the end face of the annular protrusion and along the axis of the rotating shaft 21. There are four cylindrical protrusions evenly distributed around the circumference. The rotating shaft 21 passes through the axis of the main frame 1, and one end is installed in the inner ring of an angular contact ball bearing.

[0066] like Figure 13 and Figure 14 As shown, the guide rail disk 22 is generally circular, with four circumferentially distributed first fixing holes 220 at its center. The cylindrical protrusion of the rotating shaft 21 and the third protrusion 231 of the isolation ring 23 cooperate with the first fixing holes 220, and the cylindrical protrusion and the third protrusion 231 act as keys. The mounting opening, which is wider on the inner side (closer to the center) and narrower on the outer side, is used to fix the guide rail disk 22 and prevent the tray 3 from separating from the guide rail disk 22 radially. A weight-reducing hole is also provided between the first fixing opening and the mounting opening.

[0067] like Figure 15 and Figure 16The isolation ring 23 shown is circular in shape, with a through hole in the center through which the rotating shaft 21 passes. The two end faces of the isolation ring 23 are provided with a second protrusion 230 and a third protrusion 231 near the edge, respectively. Both the second protrusion 230 and the third protrusion 231 include four cylindrical protrusions evenly distributed around the circumference along the axis of the rotating shaft 21.

[0068] like Figures 17-20 As shown, tray 3 is partially annular with rounded edges. The side with the smaller diameter has a mounting block with the same shape as the mounting opening of guide rail 22, used to mount tray 3 onto guide rail 22. There are five trays 3, evenly distributed around the edge of guide rail 22, corresponding one-to-one with the positions of the five sets of notches 40 on lock plate 4. Tray 3 has three grooves 30, corresponding one-to-one with the three notches 40 in each set on lock plate 4, with the container placed within one groove 30.

[0069] like Figures 21-23 As shown, the lock disc 4 has a spoke structure. The center of the lock disc 4 has four circumferentially distributed second fixing holes 41. The second protrusion 230 on the isolation ring 23 passes through the second fixing holes 41, and the cylindrical protrusion acts as a key. The edge of the lock disc 4 has five groups of notches 40, each group consisting of three large holes and three small holes. Each notch 40 has five sets of interfaces, one large hole and one small hole in each set arranged radially. During operation, the system maintains a constant state of filling, sealing, dispensing, waiting, and clamping the container.

[0070] like Figures 24-27 As shown, the lock includes a latch 53, a latch base 52, a latch shaft 50, and a latch shaft bearing 51. The latch 53 and the latch base 52 are connected via the latch shaft 50. The latch shaft bearing 51 is a deep groove ball bearing made of stainless steel, and its function is to support the movement of the latch 53 and ensure that the latch 53 is in the normally open state. The latch shaft 50 is as follows... Figure 33 As shown.

[0071] like Figures 29-32 As shown, the locking base 52 is connected to the locking disc 4 through the large hole, small hole and two sets of hexagonal head bolts and nuts. The spring hook of the locking shaft 50 is connected to the bolt on the upper surface of the locking base 52 through the spring to keep the locking 53 in the normally open state. Its function is to clamp the container to the working position and hold it, and after sealing, push the container out of the working position.

[0072] like Figure 28As shown, the latch 53 is arc-shaped and is divided into a longer first part 530 and a shorter second part 540 by the latch pivot 50. The latch 53 has a first state and a second state when it is working. When the latch 53 is in the first state, it is located in the position where the main frame 1 is not equipped with the baffle 12. The first part 530 extends to the outside of the main frame 1, and the second part 540 is located in the notch 40 and has a certain distance from the inner wall of the notch 40. When the latch 53 is in the second state, the first part 530 abuts against the baffle 12 on the main frame 1 and forms a container placement area with the notch 40. The second part 540 fits against the inner wall of the notch 40, and the container is located in the container placement area. When the first part 530 of the latch 53 is in the first state, it is located outside the container. During the process of the latch 53 changing from the first state to the second state, the first part 530 of the latch 53 is blocked by the baffle 12 and rotates towards the inside of the main frame 1 with the latch pivot 50 as the center, while hooking the container into the groove 30 of the tray 3. During the process of the latch 53 changing from the second state to the first state, the first part 530 of the latch 53 is no longer blocked by the baffle 12. Under the action of the spring, the latch 53 rotates towards the outside of the main frame 1 with the latch pivot 50 as the center, and the second part 540 of the latch 53 pushes the container away from the groove 30.

[0073] The working process of this utility model is as follows:

[0074] Three stepper motors are controlled by a preset program to perform intermittent motion. The rotation of the stepper motors drives the drive gear to rotate, which in turn drives the driven gear 20 to rotate. The driven gear 20 and the rotating shaft 21 are connected without keys. When the driven gear 20 rotates, the rotating shaft 21 rotates synchronously with it. The first protrusion 210 in the middle of the rotating shaft 21 cooperates with the four first fixing holes 220 around the center of the guide rail disk 22, driving the guide rail disk 22 to rotate. The four small holes around the center of the guide rail disk 22 simultaneously cooperate with the second protrusion 230 on the lower surface of the isolation ring 23, and the second protrusion 230 on the upper surface of the isolation ring 23 cooperates with the lock disk 4. This structure replaces the function of keys, realizing that the rotating shaft 21 drives the guide rail disk 22 and the lock disk 4 to rotate simultaneously. Five trays 3 are mounted on the guide rail disk 22. The trays 3 contact the first protrusion 210 in the middle of the main frame 1 and lift up when they run to a designated position. The lock disc 4 is equipped with 15 latch bases 52. Each latch base 52 is fixed to the lock disc 4 by two sets of bolts and nuts. The latch 53 is connected to the latch base 52 by a latch shaft 50 and a latch shaft bearing 51 using a keyless connection. The spring hook of the latch shaft 50 ( Figure 24 (mark point A in the middle) and bolt ( Figure 24A spring connects the points marked (B) to ensure that the latch 53 remains open unless external force is applied. When the locking disc 4 rotates, the module formed by the latch 53 and the latch base 52 rotates accordingly. The latch 53 closes when it contacts the retaining ring above the main frame 1, simultaneously guiding the container on the conveyor belt to the filling position and clamping it. When the locking disc 4 and the guide rail disc 22 rotate synchronously to a certain phase within the retaining ring range, the tray 3 is raised under the action of the first area 110 of the tray support 11, with all containers in the same group located below the filling port. At the same time, the rotating shaft 21 pauses rotation, and the filling operation begins. After filling is completed, the rotating shaft 21 resumes rotation, sending the container on the tray 3 to the sealing working area before pausing rotation, and the sealing operation begins. After sealing is completed, the shaft 21 resumes rotation, the tray 3 descends to the second area 111 of the tray support 11, allowing the container to enter the ready-to-deliver state. When the outer edge of the latch 53 completely exits the range of the retaining ring, the latch 53 springs open under the action of the spring, and its second part 540 on the side near the center of the lock plate 4 pushes the container out, and the single working cycle ends.

[0075] Taking a container with a diameter of 80mm as an example, the effective radius of the retaining ring of the main frame 1 is 700mm. The latch 53, latch base 52, isolation ring 23, rotating shaft 21, and latch rotating shaft 50 are made of 304 stainless steel. The guide rail plate 22, lock plate 4, and main frame 1 are made of polyetheretherketone (PEEK) for strength calculation.

[0076] Estimated container weight m (full load): 4000g.

[0077] Initial velocity v: 0.2 m / s.

[0078] The initial elongation of the spring L1 is 0m, and the maximum elongation is 0.02m; the change in spring length x = L2 - L1.

[0079] The coefficient of kinetic friction between PEEK and 304 stainless steel is found to be 0.4, and the coefficient of kinetic friction between PEEK materials is 0.45.

[0080] List the energy conservation equation:

[0081] F f =μG=15.68N, substituting the parameters, we get k=1968N / m, where μ is the coefficient of kinetic friction between PEEK materials.

[0082] Verify delivery time: The timing of the deployment meets the requirements.

[0083] The maximum spring force F max =kx=39.36N.

[0084] Strength check of the locking pivot 50 (safety factor of 3, 304 stainless steel, cold working).

[0085] The alternating fatigue load of 304 stainless steel at room temperature is found to be 70–100 MPa, and the impact load is 50–80 MPa. This component is simultaneously subjected to alternating fatigue load and shear force. Taking the allowable stress as 50 MPa, the ultimate stress is:

[0086] Strength check of locking base 52.

[0087] Thickness at the weakest point: 4mm.

[0088] This component is mainly subjected to impact loads and shear forces.

[0089] Based on the previously obtained data, the stress limit is: 50*40 / 3=666.67N.

[0090] The lock plate 4, main frame 1, guide rail plate 22 and tray 3 are made of PEEK. The allowable stress of this material can reach 160-250 MPa when the safety factor is 1.2-1.5. The lock plate 4 and main frame 1 are subjected to force but there are no stress concentration points. The guide rail plate 22 and tray 3 are not subjected to the force when the spring pushes out of the container. Therefore, the strength of the reassembled parts does not need to be checked.

[0091] The calculation results show that the maximum load-bearing capacity of the locking shaft 50 is F1 = 327.249 N > 39.36 N, and the maximum load-bearing capacity of the locking base 52 is F2 = 666.67 N > 39.36 N. Both of them meet the strength requirements.

[0092] Compared with traditional filling machines, this utility model improves the transmission system, power system and clamping system. Compared with traditional filling machines, the transmission is more stable, the three drive motor design ensures better robustness, and the automatic locking device ensures the stability and accuracy of filling.

[0093] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A clamp for a rotary liquid filling machine, located on one side of a conveyor belt, on which containers to be filled are placed, characterized in that, The fixture includes a main frame (1), a motor, a transmission assembly, a tray (3), a lock plate (4), and a lock. The motor is installed in the main frame (1) and connected to the transmission assembly. The transmission assembly is connected to the tray (3) and the lock plate (4) sequentially from the side closest to the ground. The tray (3) has a groove (30), and the lock plate (4) has a notch (40). The projection of the notch (40) on the tray (3) coincides with the groove (30). The lock is installed on one side of the notch (40). One side of the main frame (1) is connected to a conveyor belt. The height of the tray (3) and the container on the conveyor belt is the same. The container entering the fixture is placed on the groove (30) and located in the notch (40).

2. The clamp for a rotary liquid filling machine according to claim 1, characterized in that, The transmission assembly includes a gear set, a rotating shaft (21), a guide rail disc (22), and an isolation ring (23); the motor is connected to the rotating shaft (21) via the gear set, the guide rail disc (22) and the isolation ring (23) are mounted on the rotating shaft (21), the tray (3) is mounted on the edge of the guide rail disc (22), and the lock disc (4) is mounted on the isolation ring (23); the rotating shaft (21) passes through the axis of the main frame (1), and a bearing is installed between it and the main frame (1).

3. The clamp for a disc-type liquid filling machine according to claim 2, characterized in that, The gear set includes a driving gear and a driven gear (20) that mesh with each other. The driving gear is connected to the motor output shaft, and the driven gear (20) is sleeved on the rotating shaft (21).

4. The clamp for a disc-type liquid filling machine according to claim 3, characterized in that, The motor includes three stepper motors, with the axis of the rotating shaft (21) as the center. Two adjacent stepper motors are mounted on the main frame (1) at an angle of 120°. The drive gear is connected to the output shaft of the stepper motor through a hook wedge key.

5. A clamp for a disc-type liquid filling machine according to claim 2, characterized in that, The rotating shaft (21) has a first protrusion (210) in the middle and a first fixing hole (220) in the middle of the guide rail disk (22). The first protrusion (210) passes through the first fixing hole (220) and cooperates with the first fixing hole (220).

6. A clamp for a disc-type liquid filling machine according to claim 2, characterized in that, The isolation ring (23) is provided with a second protrusion (230) and a third protrusion (231), and the lock disc (4) is provided with a second fixing hole (41). The second protrusion (230) passes through the second fixing hole (41) and cooperates with the second fixing hole (41); the third protrusion (231) passes through the third fixing hole and cooperates with the first fixing hole (220).

7. A clamp for a disc-type liquid filling machine according to claim 1, characterized in that, The lock includes a latch base (52) and a latch (53) connected by a latch pivot (50) and a latch pivot bearing (51). The latch base (52) is installed on one side of the notch (40) of the lock disc (4). A spring is connected between the latch pivot (50) and the latch base (52) and the lock disc (4).

8. A clamp for a disc-type liquid filling machine according to claim 7, characterized in that, The latch (53) is arc-shaped and divided into a longer first part (530) and a shorter second part (540) by the latch pivot (50). The latch (53) includes a first state and a second state. When the latch (53) is in the first state, the first part (530) extends to the outside of the main frame (1), and the second part (540) is located inside the notch (40) and separated from the inner wall of the notch (40). When the latch (53) is in the second state, the first part (530) abuts against the baffle (12) on the main frame (1) and forms a container placement area with the notch (40). The second part (540) fits against the inner wall of the notch (40), and the container is located in the container placement area.

9. A clamp for a disc-type liquid filling machine according to claim 1, characterized in that, The main frame (1) is cylindrical in shape. A bearing sleeve (10) is provided at the center of the side near the ground, and an annular tray support (11) is provided on the side away from the ground. The tray support (11) is divided into a first area (110) and a second area (111) with different heights. The transmission component is located inside the tray support (11). A baffle (12) is provided around the side of the tray support (11) away from the ground. A pair of angular contact ball bearings with opposite installation directions are provided inside the bearing sleeve (10). The tray (3) is located on the tray support (11), and the tray (3) and the lock plate (4) are located inside the baffle (12).

10. A clamp for a disc-type liquid filling machine according to claim 1, characterized in that, There are five trays (3), and each tray (3) has multiple grooves (30).

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