Filling mechanism

Abstract

The utility model relates to the technical field of filling equipment, and discloses a filling mechanism which comprises a belt conveyor, a portal frame is installed on a rack of the belt conveyor, an air cylinder is installed at the top of the portal frame, a filling pipe is installed on a piston rod of the air cylinder, a connecting pipe is arranged in the middle section of the filling pipe, and a filling head is detachably installed at the bottom end of the filling pipe. A stop ball corresponding to the bottom end of the filling pipe is arranged in the filling head, a pull rod coaxial with the filling pipe is fixedly arranged on the upper portion of the stop ball, the upper section of the pull rod is in sliding sealing connection with the upper section of the filling pipe, and an elastic piece is arranged at the upper end of the pull rod. The elastic piece applies upward elastic force to the pull rod so that the cut-off ball can abut against the bottom end of the filling pipe. The filling head has the advantages that after filling is finished, the internal pressure of the filling pipe is reduced, the cut-off ball resets under the elastic force action of the elastic piece to conduct cut-off, the inner wall of the filling head is smooth, residual liquid can flow out rapidly, and liquid leakage after filling is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of filling equipment technology, and in particular to a filling mechanism. Background Technology

[0002] The filling machine is widely used in pharmaceuticals, food, daily chemicals, oils, pesticides, and other special industries. It can fill various liquid and paste products, such as disinfectants, hand sanitizers, toothpaste, ointments, and various cosmetics. Its structure includes a frame connected to one end of the drying unit, a bottle-feeding mechanism mounted on the frame and enclosed in a glass cover, and a filling mechanism. According to international cleanliness classification standards, the opposite sides of the glass cover face Class D and Class B areas respectively, with Class D areas having a lower cleanliness level than Class B areas. To prevent air pollution from the Class D area from contaminating the filling environment inside the glass cover, a glass door is only provided on the side facing the Class B area, and the bottle-feeding mechanism is located near the glass door for easy observation. The filling mechanism is located on the side away from the glass door, i.e., the side facing the Class D area, and includes a pump body, a filling needle, and a silicone tube connecting the two. During operation, the pump body guides the liquid through the silicone tube to the filling needle, until it is injected into the bottle on the bottle-feeding mechanism.

[0003] Chinese utility model patent (authorization announcement number: CN220682852U, title: Filling Machine) includes a machine body, a conveyor belt, a bottle clamp, and a filling nozzle. The conveyor belt is mounted on the machine body and is used to transport containers. The bottle clamp is mounted on the machine body and located above the conveyor belt. The bottle clamp is used to hold the containers for filling. The filling nozzle is used to fill the containers. Therefore, this filling machine uses the bottle clamp to hold the containers on the conveyor belt, aligning the container opening with the filling nozzle, reducing the possibility of filling outside the container. However, some liquid will remain on the inner wall of the filling nozzle and at the liquid outlet, forming droplets. These droplets will drip onto the container, causing liquid contamination on the outside of the container. To prevent liquid contamination, the container needs to be removed only after all the liquid has dripped out, thus reducing the filling speed. Utility Model Content

[0004] The purpose of this invention is to provide a filling mechanism to overcome the shortcomings of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution: A filling mechanism includes a belt conveyor, a gantry frame mounted on the frame of the belt conveyor, a cylinder mounted on the top of the gantry frame, a piston rod of the cylinder passing through the gantry frame, a filling tube detachably mounted on the piston rod, a connecting pipe connected to the middle section of the filling tube, a filling head detachably mounted on the bottom end of the filling tube, the inner wall of the filling head being polished to a mirror finish, a stop ball corresponding to the bottom end of the filling tube being provided inside the filling head, a pull rod coaxial with the filling tube being fixedly mounted on the upper part of the stop ball, the upper section of the pull rod being slidably and sealed to the upper section of the filling tube by a piston, an elastic element being provided at the upper end of the pull rod, the elastic element applying an upward elastic force to the pull rod to make the stop ball abut against the bottom end of the filling tube.

[0006] Preferably, the upper section of the pull rod is provided with an external thread, the elastic element is a spring, the spring is sleeved on the pull rod located outside the filling tube, and a nut is screwed on the pull rod to compress the spring and install it on the upper end of the filling tube.

[0007] Preferably, a limiting plate is fixed on the inner side of the gantry frame. There are two limiting plates, which are located on both sides of the gantry frame respectively, and the limiting plates extend along the conveying direction of the belt conveyor.

[0008] Preferably, a guide plate is fixed to one end of the limiting plate, the guide plate is close to the feed end of the belt conveyor, the two guide plates are arranged in a figure-eight shape, and the larger end of the figure-eight shape faces the feed end of the belt conveyor.

[0009] Preferably, the lower inner side of the filling tube is provided with a spherical surface that matches the stop sphere.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] After filling is completed, the internal pressure of the filling tube decreases. Under the elastic force of the elastic element, the stop ball returns to its original position and abuts against the lower end of the filling tube to cut off the flow. In addition, the inner wall of the filling head is smooth, and the residual liquid can flow out quickly, effectively preventing liquid leakage after filling. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the filling tube structure;

[0014] In the diagram, 1-belt conveyor, 2-gantry frame, 3-cylinder, 4-filling pipe, 5-connecting pipe, 6-filling head, 7-stop ball, 8-pull rod, 9-piston, 10-spring, 11-nut, 12-limit plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1 and 2 As shown, a filling mechanism includes a belt conveyor 1, a gantry frame 2 mounted on the frame of the belt conveyor 1, a cylinder 3 mounted on the top of the gantry frame 2, a piston rod 9 of the cylinder 3 passing through the gantry frame 2, a filling tube 4 detachably mounted on the piston rod 9, a connecting pipe 5 connected to the middle section of the filling tube 4, a filling head 6 detachably mounted at the bottom end of the filling tube 4 (detachably connected by threads), the inner wall of the filling head 6 being polished to a mirror finish, a stop ball 7 corresponding to the bottom end of the filling tube 4 being provided inside the filling head 6, a connecting rod 8 coaxial with the filling tube 4 being fixedly mounted on the upper part of the stop ball 7, the upper section of the connecting rod 8 communicating with the upper section of the filling tube 4. The piston 9 is connected by a sliding seal. The upper end of the connecting rod 8 is provided with an elastic element. The elastic element applies an upward elastic force to the connecting rod 8 so that the stop ball 7 abuts against the bottom end of the filling tube 4. After filling, the internal pressure of the filling tube 4 decreases. Under the elastic force of the elastic element, the stop ball 7 returns to its original position and abuts against the lower end of the filling tube 4 to cut off the flow. In addition, the inner wall of the filling head 6 is smooth, and the residual liquid can flow out quickly, effectively preventing liquid leakage after filling. It is worth noting that the improvement of this invention lies in the liquid outlet component to avoid residual liquid forming droplets that fall onto the container. Therefore, the infusion component, metering component, etc., have not been changed and will not be described in detail here.

[0022] In this embodiment, as Figure 2 As shown, the upper section of the connecting rod 8 is provided with an external thread, and the elastic element is a spring 10. The spring 10 is sleeved on the connecting rod 8 located outside the filling tube 4. A nut 11 is screwed on the connecting rod 8. The nut 11 is used to compress the spring 10 and install it on the upper end of the filling tube 4. The structure is simple, and the flow can be cut off quickly and conveniently.

[0023] In this embodiment, as Figure 1As shown, a limiting plate 12 is fixed on the inner side of the gantry frame 2. There are two limiting plates 12, which are located on both sides of the gantry frame 2. The limiting plates 12 extend along the conveying direction of the belt conveyor 1. A guide plate is fixed at one end of the limiting plate 12. The guide plate is close to the feed end of the belt conveyor 1. The two guide plates are arranged in a figure-eight shape, with the larger end of the figure-eight facing the feed end of the belt conveyor 1. The bottle is clamped between the two limiting plates 12 to prevent the bottle mouth from being misaligned with the filling head 6 when it is conveyed to the bottom of the filling head 6, which would cause spillage.

[0024] In this embodiment, as Figure 2 As shown, the lower inner side of the filling tube 4 is provided with a spherical surface that matches the stop ball 7. The spherical surface increases the contact area between the filling tube 4 and the stop ball 7, thereby improving the interception effect.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filling mechanism, comprising a belt conveyor (1), a gantry frame (2) mounted on the frame of the belt conveyor (1), a cylinder (3) mounted on the top of the gantry frame (2), the piston rod of the cylinder (3) passing through the gantry frame (2), characterized in that: A filling tube (4) is detachably mounted on the piston rod. A connecting tube (5) is provided in the middle section of the filling tube (4) and communicates with it. A filling head (6) is detachably mounted on the bottom end of the filling tube (4). The inner wall of the filling head (6) is polished to a mirror surface. A stop ball (7) corresponding to the bottom end of the filling tube (4) is provided inside the filling head (6). A pull rod (8) coaxial with the filling tube (4) is fixedly provided on the upper part of the stop ball (7). The upper section of the pull rod (8) is slidably and sealed to the upper section of the filling tube (4) through a piston (9). An elastic element is provided at the upper end of the pull rod (8). The elastic element applies an upward elastic force to the pull rod so that the stop ball (7) abuts against the bottom end of the filling tube (4).

2. The filling mechanism according to claim 1, characterized in that: The upper section of the pull rod (8) is provided with an external thread, and the elastic element is a spring (10). The spring (10) is sleeved on the pull rod (8) located outside the filling tube (4). A nut (11) is screwed on the pull rod (8). The nut (11) is used to compress the spring (10) and install it on the upper end of the filling tube (4).

3. The filling mechanism according to claim 1, characterized in that: The inner side of the gantry (2) is fixed with a limiting plate (12). There are two limiting plates (12) and they are located on both sides of the gantry (2). The limiting plates (12) extend along the conveying direction of the belt conveyor (1).

4. A filling mechanism according to claim 3, characterized in that: One end of the limiting plate (12) is fixed with a guide plate. The guide plate is close to the feed end of the belt conveyor (1). The two guide plates are arranged in a figure-eight shape, with the larger end of the figure-eight shape facing the feed end of the belt conveyor (1).

5. A filling mechanism according to any one of claims 1-4, characterized in that: The lower inner side of the filling tube (4) is provided with a spherical surface that matches the stop ball (7).

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