A liquid filling machine

Abstract

This utility model belongs to the technical field of filling equipment and discloses a liquid filling machine, including a column, a rocker arm, a lifting mechanism, and a rotating structure. The rotating structure is located at the upper end of the column, allowing the rocker arm to rotate horizontally around the column and is equipped with mechanical limiters and electromagnetic brakes to achieve rapid switching between multiple workstations. The lifting mechanism is installed on the rocker arm via a slide rail slider, allowing it to move continuously along the arm length and be locked by a clamping cylinder. The stroke cylinder then drives the filling gun to rise and fall vertically, ensuring precise alignment between the filling gun and the container opening. A balancer suspends the conveying pipe to reduce the load. A drag chain centrally protects the pipeline, and a limit cover prevents splashing. The column integrates a power distribution box for real-time closed-loop control of the filling volume. The machine has a compact structure, precise positioning, rapid changeover, and convenient maintenance, making it suitable for flexible production of multiple varieties and small batches in the food, pharmaceutical, and daily chemical industries.

Description

Technical Field

[0001] This utility model belongs to the field of filling machine technology, and specifically relates to a liquid filling machine. Background Technology

[0002] In automated production lines in industries such as food, pharmaceuticals, and daily chemicals, liquid filling is a critical final step. Existing equipment often uses a fixed column structure, with the filling gun completing the liquid injection via vertical lifting. However, the horizontal relative position between the gun and the container cannot be quickly adjusted. When changing to different container sizes or performing multi-station operations, the entire conveyor line must be moved or an independent filling unit added, resulting in large equipment footprints, long changeover times, and high investment costs.

[0003] To improve flexibility, some manufacturers add a rotating arm to the top of the column, allowing the filling gun to swing horizontally around the column. However, these rotating arms are usually positioned manually by pushing and pulling, lacking reliable mechanical limit and braking mechanisms. After prolonged operation, they are prone to wobbling, reducing the alignment accuracy between the filling gun and the container opening and increasing the risk of liquid splashing. Furthermore, the lifting mechanism is fixed at the end of the rotating arm, and its horizontal position cannot be further fine-tuned, making it difficult to adapt to containers of different diameters. Operators still need to frequently move containers, and the labor intensity is not effectively reduced.

[0004] Furthermore, the lifting stroke of the filling gun on the existing rotating arm is directly driven by a cylinder, and the feed tube and cable move up and down with the gun body, which is prone to fatigue and damage due to long-term bending; the weight of the feed tube is entirely borne by the gun body, which aggravates the wear of sliding parts; the overall pipeline layout is messy, which not only affects the aesthetics but also poses safety hazards. Therefore, the market urgently needs a liquid filling machine that is compact in structure, precise in positioning, labor-saving in operation, and easy to maintain to meet the flexible production needs of multi-variety, small-batch production. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a liquid filling machine. Through the cooperation of the rotating structure and the rocker arm, the filling gun can rotate freely around the column in the horizontal plane and achieve mechanical limit within a range of 180° or greater. With the help of the brake controller and the rocker arm brake, the rotation position can be locked or released with one key, which improves the equipment's adaptability to multi-station and multi-specification containers.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A liquid filling machine is provided, comprising: a column, a rocker arm, and a lifting mechanism; the column forms the supporting body of the filling machine; a rotating structure is mounted on the column, allowing the rocker arm to rotate around the column; the rotating structure includes a rotating support shaft and a fixed seat; the rotating support shaft provides a low-friction rotation fulcrum; the fixed seat is fixedly connected to the column and the rotating support shaft; the rocker arm is rotatably connected to the column through the rotating structure; two limiting members are fixedly provided on the side wall of the rocker arm, the limiting members cooperate with the rotating support shaft to limit the rotation angle of the rocker arm; a guide rail is provided on the side of the rocker arm along its length; the lifting mechanism includes a mounting plate, a sliding member, a cylinder mounting seat, and a filling gun; a sliding member is fixed on the side of the mounting plate facing the rocker arm, the sliding member slides with the guide rail on the rocker arm, allowing the lifting mechanism to move along the rocker arm; the cylinder mounting seat is fixed on the mounting plate; a stroke cylinder is fixed on the cylinder mounting seat, its piston rod extends downward out of the cylinder mounting seat and connects to the filling gun, driving the filling gun to move vertically.

[0007] Furthermore, a push-pull rod and a locking structure are fixed to the bottom of the side of the mounting plate facing away from the rocker arm; the push-pull rod is used to push the lifting mechanism to move along the rocker arm; the locking structure is used to fix the lifting mechanism in a set position, and includes a clamping cylinder and a friction block driven by the clamping cylinder.

[0008] Furthermore, it also includes an L-shaped mounting bracket and a limiting cover; the L-shaped mounting bracket is fixed to the bottom of the mounting plate; the limiting cover is fixedly connected to the L-shaped mounting bracket, and the limiting cover has a through hole for the filling gun to pass through.

[0009] Furthermore, it also includes a rocker arm brake, a brake controller, and a cable conduit; the rocker arm brake is fixed to the rotating structure; the cable conduit is fixed to the rocker arm; the brake controller is fixed to the rocker arm and is electrically connected to the rocker arm brake via a cable passing through the cable conduit.

[0010] Furthermore, it also includes a conveying pipe and a flanged pneumatic ball valve; the flanged pneumatic ball valve is fixedly installed on the column; one end of the conveying pipe is connected to the output end of the flanged pneumatic ball valve, and the other end is connected to the input end of the filling gun.

[0011] Furthermore, it also includes a square rod, an L-shaped lifting bracket, and a balancer; the square rod is fixedly installed on the top of the column, and the square rod is set as a hollow structure; the L-shaped lifting bracket is set in the hollow cavity of the square rod or fixed on it; the balancer is installed at one end of the L-shaped lifting bracket; the balancer is used to suspend and balance the weight of the conveying pipe.

[0012] Furthermore, it also includes an inner-opening bridge-type cable chain; one end of the inner-opening bridge-type cable chain is fixed to the upper side of the rocker arm near the column, and the other end is fixedly connected to the mounting plate.

[0013] Furthermore, a distribution box is fixedly installed on the column.

[0014] Furthermore, a base is welded and fixed to the bottom of the column; a right-angle reinforcing rib is welded between the base and the column.

[0015] Furthermore, a handle for rotating the rocker arm is fixed to the side of the rocker arm.

[0016] This utility model has the following beneficial effects:

[0017] (1) This application enables the filling gun to rotate freely around the column in the horizontal plane through the cooperation of the rotating structure and the rocker arm, and achieves mechanical limit within a range of 180° or more. With the brake controller and the rocker arm brake, the rotation position can be locked or released with one key, which improves the equipment's adaptability to multi-station and multi-specification containers.

[0018] (2) The lifting mechanism of this application adopts a sliding rail slider structure to move along the length of the rocker arm, and achieves rapid locking at any position by a friction block driven by a clamping cylinder, so that the horizontal position of the filling gun can be continuously finely adjusted. The stroke cylinder then drives the gun body to lift vertically, so as to achieve precise alignment between the gun head and the container opening. At the same time, the balancer suspends the conveying pipe, which greatly reduces the load on the gun body, reduces the wear of sliding parts by more than 50%, and significantly extends the service life of the whole machine.

[0019] (3) The limiting cover of this application covers the container opening during filling to prevent liquid splashing; the column integrates the power distribution box to provide real-time feedback on the filling weight, forming a closed-loop control; the base and right-angle reinforcing rib welded structure ensures the stability of the whole machine. The overall layout is compact, the pipeline is neat, the operation is labor-saving, and the maintenance is convenient. It can be widely used in flexible production lines in the food, pharmaceutical, and daily chemical industries. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a liquid filling machine according to the present invention;

[0021] Figure 2 This is a front view of a liquid filling machine according to this utility model;

[0022] Figure 3 This is a rear view of a liquid filling machine according to this utility model;

[0023] Figure 4 This is a utility model Figure 3 A magnified view of a portion at point A;

[0024] Figure 5 This is a schematic diagram of the lifting mechanism of a liquid filling machine according to the present invention;

[0025] Figure 6 This is another structural schematic diagram of the lifting mechanism of a liquid filling machine according to this utility model;

[0026] Figure 7 This is a schematic diagram of the rocker arm of a liquid filling machine according to the present invention;

[0027] Figure 8 This is another structural schematic diagram of the rocker arm of a liquid filling machine according to this utility model;

[0028] The components in the attached diagram are labeled as follows: 1. Column; 2. Rocker arm; 3. Lifting mechanism; 4. Rotating structure; 41. Rotating support shaft; 42. Fixed seat; 21. Limiting component; 22. Guide rail; 23. Handle; 31. Mounting plate; 32. Sliding component; 33. Cylinder mounting seat; 34. Filling gun; 35. Stroke cylinder; 36. Push-pull rod; 37. Locking structure; 371. Clamping cylinder; 372. Friction block; 5. L-shaped mounting bracket; 6. Limiting cover; 61. Through hole; 7. Rocker arm brake; 8. Brake controller; 9. Conduit; 10. Material conveying pipe; 11. Flanged pneumatic ball valve; 12. Square rod; 13. L-shaped lifting bracket; 14. Balancer; 15. Inner-opening bridge-type cable chain; 16. Distribution box; 17. Base; 18. Right-angle reinforcing rib. Detailed Implementation

[0029] 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 embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] Example:

[0031] This embodiment provides a liquid filling machine, such as Figures 1 to 8 As shown, the machine comprises a column 1, a rocker arm 2, a lifting mechanism 3, a rotating structure 4, an L-shaped mounting bracket 5, a limit cover 6, a rocker arm brake 7, a brake controller 8, a cable conduit 9, a material conveying pipe 10, a flange-type pneumatic ball valve 11, a square rod 12, an L-shaped lifting bracket 13, a balancer 14, an inner-opening bridge-type cable chain 15, a distribution box 16, a base 17, and right-angle reinforcing ribs 18. The column 1 is a hollow column made of welded square tubing. Its bottom is welded and fixed to the base 17 by four right-angle reinforcing ribs 18. The base 17 is locked to the ground with anchor bolts, forming the main support structure of the entire machine. The distribution box 16 is bolted to the front of the column 1.

[0032] The rotating structure 4 is installed at the upper end of the column 1 and includes a rotating support shaft 41 and a fixed seat 42. The fixed seat 42 is bolted to the top of the column 1, and the rotating support shaft 41 is installed in the fixed seat 42 through a pair of tapered roller bearings, forming a low-friction rotating fulcrum. The rocker arm 2 is a rectangular tube extruded from aluminum alloy, and its root is connected to the rotating support shaft 41 through a flange, allowing the rocker arm 2 to rotate around the column 1 in the horizontal plane. Two limiting members 21 are welded to the side wall of the root of the rocker arm 2. When the rocker arm 2 rotates to its limit position, the limiting members 21 contact the boss on the rotating support shaft 41 to achieve mechanical limitation of the rotation angle. A double-axis linear guide rail 22 is bolted to the side of the rocker arm 2 along its length.

[0033] The lifting mechanism 3 includes a mounting plate 31, a sliding member 32, a cylinder mounting seat 33, a filling gun 34, a stroke cylinder 35, a push-pull rod 36, and a locking structure 37. The mounting plate 31 is a 10mm thick aluminum plate. Four sliders are bolted to the side facing the rocker arm 2 as sliding members 32. The sliders slide in cooperation with the guide rail 22, allowing the lifting mechanism 3 to move back and forth along the rocker arm 2. A stainless steel push-pull rod 36 is welded to the bottom back of the mounting plate 31 for easy manual pushing and pulling by the operator. The locking structure 37 is located above the push-pull rod 36 and includes a clamping cylinder 371 and a friction block 372. The clamping cylinder 371 is a compact cylinder that is bolted to the mounting plate 31. The piston rod end is threaded to a polyurethane friction block 372. When it is necessary to fix the lifting mechanism 3, the clamping cylinder 371 is activated, and the friction block 372 presses against the side of the guide rail 22, achieving position locking through friction. The cylinder mounting base 33 is a U-shaped bent piece, fixed to the front of the mounting plate 31 by bolts. The stroke cylinder 35 is a double-acting cylinder, fixed to the top of the cylinder mounting base 33 by bolts. Its piston rod passes downward through the cylinder mounting base 33 and is connected to the filling gun 34 through a floating joint, driving the filling gun 34 to move vertically up and down. The filling gun 34 is made of 316L stainless steel, and the gun body integrates a pneumatic ball valve and a back suction device to effectively prevent dripping.

[0034] The L-shaped mounting bracket 5 is a bent stainless steel plate and is fixed to the bottom of the mounting plate 31 with bolts. The limiting cover 6 is a transparent acrylic cylinder and is fixed to the L-shaped mounting bracket 5 with bolts. The limiting cover 6 has a through hole 61 in the center, through which the nozzle of the filling gun 34 passes. The diameter of the through hole 61 is slightly larger than that of the nozzle and is used to cover the container opening during filling to prevent liquid from splashing.

[0035] The rocker arm brake 7 is an electromagnetic power-off brake, fixed to the top of the rotating support shaft 41 by bolts. Its stator is fixedly connected to the column 1 by an L-shaped plate. The cable tray 9 is a stainless steel pipe, fixed to the upper surface of the rocker arm 2 by clamps. The brake controller 8 is fixed to the root of the rocker arm 2 by bolts. The cable of the brake controller 8 passes through the cable tray 9 and is electrically connected to the rocker arm brake 7, realizing remote control of the braking and release of the rocker arm 2. A handle 23 for pushing the rocker arm 2 to rotate is also fixed to the side of the rocker arm 2.

[0036] The flanged pneumatic ball valve 11 is bolted to the back of the column 1. Its input end is connected to the workshop feeding system via a pipeline, and its output end is connected to the input end of the filling gun 34 via a food-grade steel wire hose as a conveying pipe 10. The square rod 12 is a hollow square steel rod, bolted to the top of the column 1. The L-shaped lifting bracket 13 is welded from a stainless steel square tube. One end is inserted into the hollow cavity of the square rod 12 and fixed with a set screw, and the other end is equipped with a spring balancer 14. The steel wire rope hook of the balancer 14 is connected to the middle of the conveying pipe 10 to suspend and balance the weight of the conveying pipe 10, reducing the labor intensity of the operators.

[0037] One end of the inner-opening bridge-type cable chain 15 is fixed to the upper side of the rocker arm 2 near the column 1 via a bracket, and the other end is fixedly connected to the mounting plate 31 via a bracket. It is used to protect the air pipes and cables of the stroke cylinder 35, clamping cylinder 371 and filling gun 34. The cable chain adopts an inner-opening structure, which is convenient for later maintenance.

[0038] The workflow of this embodiment is as follows: Initially, the rocker arm brake 7 is in a braking state, and the rocker arm 2 is locked to one side of the column 1. The operator holds the push-pull rod 36, presses the release button of the brake controller 8, the rocker arm brake 7 is released, and the rocker arm 2 is manually pushed to rotate directly above the container. After releasing the button, the rocker arm brake 7 is braked again. Next, the operator activates the clamping cylinder 371, the friction block 372 releases the guide rail 22, and adjusts the position of the lifting mechanism 3 through the push-pull rod 36 so that the filling gun 34 is aligned with the container opening. Then, the clamping cylinder 371 is activated again, the friction block 372 presses against the guide rail 22, and the lifting mechanism 3 is locked. The piston rod of the stroke cylinder 35 extends, driving the filling gun 34 to descend into the container opening. The flange-type pneumatic ball valve 11 opens, and the liquid enters the filling gun 34 through the feed pipe 10 and begins filling. After filling is completed, the piston rod of the stroke cylinder 35 retracts, the filling gun 34 rises to reset, and one filling cycle is completed.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, continuous updates and advancements made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A liquid filling machine, characterized in that, include: Column (1), rocker arm (2) and lifting mechanism (3); The column (1) forms the main support structure of the filling machine; A rotating structure (4) is mounted on a column (1) to allow the rocker arm (2) to rotate around the column (1); the rotating structure (4) includes a rotating support shaft (41) and a fixed seat (42); the rotating support shaft (41) provides a low-friction rotation fulcrum; the fixed seat (42) is fixedly connected to the column (1) and the rotating support shaft (41). The rocker arm (2) is rotatably connected to the column (1) through the rotating structure (4); two limiting pieces (21) are fixedly provided on the side wall of the rocker arm (2), and the limiting pieces (21) cooperate with the rotating support shaft (41) to limit the rotation angle of the rocker arm (2); a guide rail (22) is provided on the side of the rocker arm (2) along its length direction. The lifting mechanism (3) includes a mounting plate (31), a sliding member (32), a cylinder mounting seat (33), and a filling gun (34); the sliding member (32) is fixed on the side of the mounting plate (31) facing the rocker arm (2), and the sliding member (32) slides with the guide rail (22) on the rocker arm (2), so that the lifting mechanism (3) can move along the rocker arm (2); the cylinder mounting seat (33) is fixed on the mounting plate (31); the stroke cylinder (35) is fixed on the cylinder mounting seat (33), and its piston rod extends downward out of the cylinder mounting seat (33) and is connected to the filling gun (34), driving the filling gun (34) to move vertically; It also includes a rocker arm brake (7), a brake controller (8), and a cable conduit (9); the rocker arm brake (7) is fixed on the rotating structure (4), and one end is fixedly connected to the column (1) through a plate; the cable conduit (9) is fixed on the rocker arm (2); the brake controller (8) is fixed on the rocker arm (2), and is electrically connected to the rocker arm brake (7) through a cable passing through the cable conduit (9).

2. The liquid filling machine according to claim 1, characterized in that: A push-pull rod (36) and a locking structure (37) are fixed to the bottom of the side of the mounting plate (31) facing away from the rocker arm (2); the push-pull rod (36) is used to push the lifting mechanism (3) to move along the rocker arm (2); the locking structure (37) is used to fix the lifting mechanism (3) at a set position, which includes a clamping cylinder (371) and a friction block (372) driven by the clamping cylinder (371).

3. A liquid filling machine according to claim 1 or 2, characterized in that: It also includes an L-shaped mounting bracket (5) and a limiting cover (6); the L-shaped mounting bracket (5) is fixed to the bottom of the mounting plate (31); the limiting cover (6) is fixedly connected to the L-shaped mounting bracket (5), and the limiting cover (6) has a through hole (61) for the filling gun (34) to pass through.

4. A liquid filling machine according to claim 1, characterized in that: It also includes a conveying pipe (10) and a flanged pneumatic ball valve (11); the flanged pneumatic ball valve (11) is fixedly installed on the column (1); one end of the conveying pipe (10) is connected to the output end of the flanged pneumatic ball valve (11), and the other end is connected to the input end of the filling gun (34).

5. A liquid filling machine according to claim 1, characterized in that: It also includes a square rod (12), an L-shaped lifting bracket (13), and a balancer (14); the square rod (12) is fixedly installed on the top of the column (1), and the square rod (12) is set as a hollow structure; the L-shaped lifting bracket (13) is set in the hollow cavity of the square rod (12) or fixed on it; the balancer (14) is installed at one end of the L-shaped lifting bracket (13); the balancer (14) is used to suspend and balance the weight of the conveying pipe (10).

6. A liquid filling machine according to claim 1 or 3, characterized in that: It also includes an inner-opening bridge-type cable chain (15); one end of the inner-opening bridge-type cable chain (15) is fixed to the upper side of the rocker arm (2) near the column (1), and the other end is fixedly connected to the mounting plate (31).

7. A liquid filling machine according to claim 1, characterized in that: A distribution box (16) is fixedly installed on the column (1).

8. A liquid filling machine according to claim 1, characterized in that: A base (17) is welded to the bottom of the column (1); a right-angle reinforcing rib (18) is welded between the base (17) and the column (1).

9. A liquid filling machine according to claim 1, characterized in that: The rocker arm (2) is also fixed with a handle (23) for pushing the rocker arm (2) to rotate.

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