Filling head switching structure of filling machine

Abstract

The utility model relates to the technical field of packaging machinery, in particular to a filling head switching structure of a filling machine, which comprises a connecting flange used for being connected with a liquid supply pipeline of the filling machine, and further comprises a connecting pipe connected with the connecting flange and used for receiving filling liquid; the sleeve shell is rotationally connected to the outer part of the connecting pipe; the plurality of connecting sleeves are arranged on the sleeve shell and are communicated with the connecting pipe; the plurality of filling nozzles are respectively connected with the plurality of connecting sleeves; the driving motor is arranged outside the connecting pipe, and the end part of an output shaft of the driving motor is fixedly connected with a driving gear; the outer gear is fixedly connected to the sleeve shell and is meshed with the driving gear; compared with the mode of switching by vertically moving the container or the filling head in the prior art, the switching mode is more efficient, the switching time is obviously shortened, the overall efficiency of the filling operation is improved, and the problem that the switching efficiency of the filling head is low in the prior art is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and in particular to a filling head switching structure for a filling machine. Background Technology

[0002] As an important component of packaging machinery, filling machines are widely used in various industries such as food and beverage, daily chemical and pharmaceutical, and industrial chemicals. Their main function is to accurately fill liquids, pastes, powders, or granules into various containers according to preset quantities, thereby improving production efficiency and reducing material waste. In actual production lines, filling machines need to fill continuously conveyed containers sequentially. To achieve filling of containers at different locations, existing filling machines typically use mechanical transmission devices to move the containers up and down, or to move the filling head up and down, so that after filling one container, the filling head can be switched to the next container to be filled.

[0003] However, this method of switching via vertically moving containers or filling heads involves a relatively long mechanical travel distance, resulting in a time consumption for each switch. On high-speed production lines, this accumulated switching time significantly reduces overall filling efficiency, becoming a bottleneck restricting the improvement of production capacity.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a filling head switching structure for a filling machine.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a filling head switching structure for a filling machine, including a connecting flange for connecting to the liquid supply pipeline of the filling machine, and a connecting pipe for receiving filling liquid; a housing rotatably connected to the outside of the connecting pipe; multiple connecting sleeves disposed on the housing and communicating with the connecting pipe; multiple filling nozzles respectively connected to the multiple connecting sleeves; a drive motor disposed outside the connecting pipe, with a drive gear fixedly connected to the end of the output shaft of the drive motor; an external gear fixedly connected to the housing and meshing with the drive gear; and a solenoid valve disposed in the fluid passage between the connecting pipe and the connecting sleeves for controlling the flow of liquid to the filling nozzle.

[0007] The working principle of the filling head switching structure of this application is as follows: First, the filling liquid enters the connecting pipe through the connecting flange. When the filling machine starts working, the conveyor belt drives the container to move continuously or intermittently. At the same time, the drive motor starts, driving the housing to rotate around the axis of the connecting pipe through the drive gear and external gear. Since multiple connecting sleeves and filling nozzles are fixed on the housing, they also rotate synchronously with the housing and move along a circumferential path. When a filling nozzle moves to directly above the container to be filled on the conveyor belt as the housing rotates, the control system of the filling machine detects this position and controls the solenoid valve corresponding to the filling nozzle to open. At this time, the liquid in the connecting pipe enters the connecting sleeve through the solenoid valve, and then flows through the filling nozzle to be injected into the container. As the housing continues to rotate and the conveyor belt moves, the filling nozzle will gradually move away from above the container after filling is completed. During this process, the control system will close the solenoid valve and stop the liquid supply. At the same time, the next filling nozzle has moved to above the next container to be filled as the housing rotates, the solenoid valve is opened again, and filling of the next container begins. This process is repeated continuously, enabling continuous and rapid switching between multiple filling nozzles.

[0008] Furthermore, the connecting sleeve is threadedly connected to the filling nozzle.

[0009] Furthermore, a vertical pipe is fixedly connected to the surface of the connecting pipe, and the solenoid valve is installed on the vertical pipe, which is used to communicate with the connecting sleeve.

[0010] Furthermore, a sealing gasket is provided between the vertical pipe and the inner wall of the casing.

[0011] Preferably, the casing is cylindrical.

[0012] Preferably, a plurality of the connecting sleeves are evenly spaced along the circumferential direction of the housing.

[0013] Preferably, the drive motor is a stepper motor.

[0014] Preferably, the connecting flange is connected to the liquid supply line of the filling machine by bolts.

[0015] Preferably, the sealing gasket is made of a wear-resistant material.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By setting a rotatable housing and multiple connecting sleeves and filling nozzles mounted on it, and using a transmission mechanism composed of a drive motor, drive gear, and external gear to drive the housing to rotate, the multiple filling nozzles can rotate synchronously with the housing. Combined with the control of liquid flow direction by a solenoid valve, after the filling nozzle moves with the container on the conveyor belt and completes filling, the rotation of the housing allows the next filling nozzle to be quickly aligned with the next container and inserted into it, thereby achieving rapid switching between the filling head and the container.

[0018] Compared to the existing technology that switches between containers or filling heads by vertically moving them, the switching method of this invention is more efficient, significantly shortens the switching time, improves the overall efficiency of the filling operation, and effectively solves the problem of low switching efficiency of filling heads in the existing technology. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a filling head switching structure for a filling machine.

[0020] Figure 2 This is a schematic diagram of another perspective on the filling head switching structure of a filling machine.

[0021] Figure 3 This is a partial sectional view of the filling head switching structure of a filling machine.

[0022] In the diagram: 1. Connecting flange; 2. Connecting pipe; 3. Solenoid valve; 4. Vertical pipe; 5. Connecting sleeve; 6. Filling nozzle; 7. Drive motor; 8. Drive gear; 9. External gear; 10. Housing; 11. Sealing gasket. Detailed Implementation

[0023] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0024] Filling machines are indispensable equipment in modern industrial production, playing a crucial role, especially in the packaging of liquids and pastes. To meet the demands of continuous and high-efficiency production, filling machines need to be able to quickly and accurately fill materials into containers transported along the production line. In existing technologies, common filling machines typically use mechanical devices to drive containers or filling heads in a vertical reciprocating motion to switch between different containers. However, this vertical switching method suffers from long strokes and high inertia, resulting in a lengthy switching process and limiting further increases in filling speed, making it difficult to meet the needs of high-speed production lines. To address the low efficiency of filling head switching in existing technologies, this application proposes a novel filling head switching structure for a filling machine. This structure features a rotatable housing 10 with multiple filling nozzles 6 arranged on it. A drive motor 7 drives the housing 10 to rotate, thereby achieving rapid switching between the multiple filling nozzles 6 and significantly improving filling efficiency.

[0025] like Figures 1 to 3 The filling head switching structure of a filling machine shown includes a connecting flange 1 for connecting to the liquid supply pipeline of the filling machine, and further includes:

[0026] Connecting pipe 2, connected to connecting flange 1, is used to receive the filling liquid;

[0027] The housing 10 is rotatably connected to the outside of the connecting pipe 2;

[0028] Multiple connecting sleeves 5 are disposed on the housing 10 and are connected to the connecting pipe 2;

[0029] Multiple filling nozzles 6 are connected to multiple connecting sleeves 5 respectively;

[0030] A drive motor 7 is located outside the connecting pipe 2, and a drive gear 8 is fixedly connected to the end of the output shaft of the drive motor 7.

[0031] External gear 9 is fixedly connected to housing 10 and meshes with drive gear 8;

[0032] Solenoid valve 3 is installed in the fluid passage between connecting pipe 2 and connecting sleeve 5 to control the flow of liquid to filling nozzle 6.

[0033] Compared to existing technologies that use a vertical lifting method for switching filling heads, this application employs a rotary switching method, which offers significant advantages. Existing technologies require overcoming substantial inertia and gravity for vertical movement, and the stroke is fixed. During switching, there is a pause for separation and alignment between the filling head and the container. In contrast, this application drives the housing 10 to rotate, causing multiple filling nozzles 6 to move continuously along a circumference. This continuous rotary motion allows for better synchronization with the container's speed and position on the conveyor belt. After filling one container, the next filling nozzle 6 can quickly and almost seamlessly move above and into the bottle neck of the next container. This movement method significantly reduces the switching time between different containers, minimizes unnecessary waiting and positioning time, and thus greatly improves the overall efficiency of the filling operation and the production line's capacity.

[0034] The working principle of the filling head switching structure of this application is as follows: First, the filling liquid enters the connecting pipe 2 through the connecting flange 1. When the filling machine starts working, the conveyor belt drives the container to move continuously or intermittently. At the same time, the drive motor 7 starts, driving the housing 10 to rotate around the axis of the connecting pipe 2 through the drive gear 8 and the external gear 9. Since multiple connecting sleeves 5 and filling nozzles 6 are fixed on the housing 10, they also rotate synchronously with the housing 10 and move along a circumferential path. When a filling nozzle 6 moves to directly above the container to be filled on the conveyor belt as the housing 10 rotates, the control system of the filling machine will detect this position and control the solenoid valve 3 corresponding to the filling nozzle 6 to open. At this time, the liquid in the connecting pipe 2 enters the connecting sleeve 5 through the solenoid valve 3, and then flows through the filling nozzle 6 to be injected into the container. As the housing 10 continues to rotate and the conveyor belt moves, the filling nozzle 6 will gradually move away from above the container after filling is completed. During this process, the control system will close the solenoid valve 3 and stop the liquid supply. Meanwhile, the next filling nozzle 6 has moved above the next container to be filled as the housing 10 rotates, and the solenoid valve 3 is opened again to begin filling the next container. This cycle repeats continuously, enabling continuous and rapid switching between multiple filling nozzles 6.

[0035] In this process, connecting flange 1 and connecting pipe 2 are responsible for the stable delivery of filling liquid; housing 10, connecting sleeve 5, and filling nozzle 6 constitute a rotatable liquid distribution and injection unit; drive motor 7, drive gear 8, and external gear 9 provide the power and transmission for rotational switching; solenoid valve 3 controls the flow of liquid in connecting pipe 2. Through this rotational switching mechanism, this structure can effectively shorten the switching time of the filling head between containers and improve filling efficiency.

[0036] In one embodiment of this utility model, the connecting sleeve 5 is threadedly connected to the filling nozzle 6.

[0037] In practice, the connecting sleeve 5 and the filling nozzle 6 are connected by threads, providing significant flexibility and convenience compared to permanent connections such as welding or bonding. This detachable connection allows users to easily replace the filling nozzle 6 with different specifications according to actual production needs, adapting to filling operations for containers of various sizes and types. This not only expands the equipment's applicability but also simplifies maintenance and replacement procedures, reduces operational difficulty and time costs, thereby further enhancing the overall efficiency and economy of the equipment.

[0038] In one embodiment of this utility model, a vertical pipe 4 is fixedly connected to the surface of the connecting pipe 2, and a solenoid valve 3 is disposed on the vertical pipe 4. The vertical pipe 4 is used to communicate with the connecting sleeve 5.

[0039] Specifically, a vertical pipe 4 is fixedly connected and communicates with the side surface of the connecting pipe 2. The vertical pipe 4 extends upward and is equipped with a solenoid valve 3. The inlet end of the solenoid valve 3 communicates with the vertical pipe 4, and the outlet end communicates with the corresponding connecting sleeve 5. Thus, the liquid flowing out of the connecting pipe 2 first enters the vertical pipe 4, and then, through the solenoid valve 3 on the vertical pipe 4, enters the connecting sleeve 5.

[0040] As one embodiment of this utility model, a sealing gasket 11 is provided between the vertical tube 4 and the inner wall of the casing 10.

[0041] In implementation, by installing a sealing gasket 11 between the vertical pipe 4 and the inner wall of the housing 10, this application effectively solves the problem of liquid leakage that may occur during the rotational switching process of the housing 10. Without a sealing structure, liquid may leak out from the mating gap between the vertical pipe 4 and the inner wall of the rotating housing 10, leading to material waste and equipment contamination. The presence of the sealing gasket 11 provides a reliable dynamic seal while allowing the housing 10 to rotate freely, ensuring that the liquid is confined within the predetermined fluid channel and does not leak to the external environment. This is crucial for maintaining the cleanliness and hygiene of the filling site, reducing material loss, and ensuring the stable operation of the equipment, further improving the practicality and reliability of the entire filling head switching structure.

[0042] As one embodiment of this utility model, the casing 10 is cylindrical.

[0043] In one embodiment of this utility model, multiple connecting sleeves 5 are evenly spaced along the circumferential direction of the housing 10.

[0044] In practice, by evenly spacing multiple connecting sleeves 5 along the circumference of the housing 10, this application ensures that each filling nozzle 6 enters the filling position sequentially at regular, predictable time intervals as the housing 10 rotates. This uniform movement rhythm is coordinated with the moving speed and spacing of the containers on the conveyor belt, enabling a smoother and more continuous filling operation. Compared to a non-uniform spacing arrangement, uniform spacing helps optimize the cycle control of the filling process, reduces production fluctuations caused by uneven switching, and thus further improves the overall efficiency of the filling operation and the operational stability of the equipment.

[0045] In one embodiment of this utility model, the drive motor 7 is a stepper motor.

[0046] In one embodiment of this utility model, the connecting flange 1 is connected to the liquid supply pipeline of the filling machine by bolts.

[0047] In practice, the connecting flange 1 is connected to the liquid supply line of the filling machine via bolts, a common and standardized connection method. This connection method offers advantages such as a secure and reliable connection, good sealing performance, and easy disassembly. During equipment installation, the filling head switching structure can be easily connected to the filling machine; when maintenance, repair, or component replacement is required, the structure can be quickly disassembled by unscrewing the bolts. This convenient connection method reduces the difficulty of equipment installation and maintenance, shortens downtime, and improves equipment availability.

[0048] As one embodiment of this utility model, the sealing gasket 11 is made of wear-resistant material.

[0049] Specifically, the sealing gasket 11, which is disposed between the vertical pipe 4 and the inner wall of the casing 10, is made of a material with excellent wear resistance. This means that when the sealing gasket 11 undergoes relative sliding friction with the inner wall of the casing 10, it can resist the wear and aging of the material, thereby maintaining its original shape and sealing performance for a long time.

[0050] The wear-resistant material can include, but is not limited to, polyurethane, high-performance rubbers (such as fluororubber and nitrile rubber), polytetrafluoroethylene (PTFE) and its modified materials, ultra-high molecular weight polyethylene (UHMWPE), etc. These materials typically have a low coefficient of friction and high tear strength, effectively reducing wear under dynamic sealing conditions. As a preferred embodiment, the most suitable wear-resistant material can be selected to manufacture the sealing gasket 11 based on factors such as the specific filling medium, operating temperature, rotational speed, and expected service life.

[0051] By using wear-resistant materials to make the sealing gasket 11, this application significantly improves the service life and reliability of the sealing gasket 11. During the continuous rotation and switching of the housing 10, the sealing gasket 11 will constantly rub against the inner wall of the housing 10. If the wear resistance of the sealing gasket material is insufficient, long-term operation will lead to wear, deformation, or even failure of the sealing gasket, resulting in liquid leakage. Using wear-resistant materials can effectively delay this process, ensuring that the sealing gasket 11 can still maintain a good sealing effect after long-term use, reducing material loss and equipment failure caused by seal failure, reducing equipment maintenance frequency and downtime, thereby further improving the continuity and economic benefits of filling operations.

[0052] Working principle of this utility model:

[0053] When this type of filling head is used on a filling machine, the connecting flange 1 is connected to the liquid supply line of the filling machine so that the filling liquid can enter the connecting pipe 2. Then the liquid in the connecting pipe 2 enters the vertical pipe 4 through the solenoid valve 3 and then flows to the connecting sleeve 5. Subsequently, it enters the filling nozzle 6 through the connecting sleeve 5 and finally enters the container through the filling nozzle 6.

[0054] When switching containers, the drive motor 7 on the control connecting pipe 2 runs. When the drive motor 7 rotates, it drives the drive gear 8 to rotate. After the drive gear 8 rotates, it drives the external gear 9 to rotate. When the external gear 9 rotates, it drives the housing 10 to rotate. When the housing 10 rotates, it drives multiple connecting sleeves 5 and filling nozzles 6 to rotate synchronously. Since the filling nozzle 6 rotates in a circular motion, the conveyor belt of the transport container can rotate synchronously while the filling nozzle 6 rotates with the housing 10. At this time, when the filling nozzle 6 has completed the filling operation and moves synchronously with the container and the conveyor belt, the filling nozzle 6 also moves upward and gradually separates from the container. At the same time, the next filling nozzle 6 is inserted into the next container. When it is easy to move directly below the solenoid valve 3, the solenoid valve 3 opens, allowing the liquid to flow through the solenoid valve 3 into the connecting sleeve 5 and finally into the container. By repeating the above operation, the filling operation can be carried out more efficiently, reducing the time for switching containers at the filling head and improving the filling efficiency.

[0055] In addition, the filling nozzle 6 is threadedly connected to the connecting sleeve 5, and different specifications of filling nozzle 6 can be replaced according to the specifications of the container. The sealing gasket 11, which is fixedly connected to the vertical pipe 4, fits against the inner wall of the casing 10, which can effectively prevent the filling liquid from spilling out.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection claimed by this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A filling head switching structure for a filling machine, comprising a connecting flange (1) for connecting to the liquid supply pipeline of the filling machine, characterized in that, Also includes: A connecting pipe (2) is connected to the connecting flange (1) for receiving filling liquid; The housing (10) is rotatably connected to the outside of the connecting pipe (2); Multiple connecting sleeves (5) are disposed on the housing (10) and communicate with the connecting pipe (2); Multiple filling nozzles (6) are respectively connected to multiple connecting sleeves (5); A drive motor (7) is disposed outside the connecting pipe (2), and a drive gear (8) is fixedly connected to the end of the output shaft of the drive motor (7); An external gear (9) is fixedly connected to the housing (10) and meshes with the drive gear (8); A solenoid valve (3) is installed in the fluid passage between the connecting pipe (2) and the connecting sleeve (5) to control the flow of liquid to the filling nozzle (6).

2. The filling head switching structure of the filling machine according to claim 1, characterized in that, The connecting sleeve (5) is threadedly connected to the filling nozzle (6).

3. The filling head switching structure of the filling machine according to claim 1, characterized in that, A vertical pipe (4) is fixedly connected to the surface of the connecting pipe (2), and the solenoid valve (3) is disposed on the vertical pipe (4). The vertical pipe (4) is used to communicate with the connecting sleeve (5).

4. The filling head switching structure of the filling machine according to claim 3, characterized in that, A sealing gasket (11) is provided between the vertical pipe (4) and the inner wall of the casing (10).

5. The filling head switching structure of the filling machine according to claim 1, characterized in that, The casing (10) is cylindrical.

6. The filling head switching structure of the filling machine according to claim 1, characterized in that, Multiple connecting sleeves (5) are evenly spaced along the circumferential direction of the housing (10).

7. The filling head switching structure of the filling machine according to claim 1, characterized in that, The drive motor (7) is a stepper motor.

8. The filling head switching structure of the filling machine according to claim 1, characterized in that, The connecting flange (1) is connected to the liquid supply line of the filling machine by bolts.

9. The filling head switching structure of the filling machine according to claim 4, characterized in that, The sealing gasket (11) is made of wear-resistant material.

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