Filling head of liquid strip packing machine

Abstract

The utility model relates to the field of liquid packaging equipment, in particular to a filling head of a liquid strip packaging machine. The filling device comprises a filling pipe and a plugging device, a filling head is installed at the end of the filling pipe, a filling opening is formed in the filling head, the plugging device comprises a plugging piece and a driving assembly, the plugging piece is arranged in the filling pipe in a sliding and penetrating mode and provided with a plugging head, and the driving assembly is used for driving the plugging piece to move so as to open and close the filling opening; the plugging head is provided with an air blowing opening communicated with the air blowing channel, and the air blowing opening is provided with an outer expanding bevel angle so that air flow from the air blowing opening can face the inner wall of the filling pipe. By optimizing the plugging head and the air outlet structure of the air blowing channel, liquid residue and leakage in the filling process are effectively prevented, and the stability and reliability of equipment are improved.

Description

Technical Field

[0001] The present application relates to the field of liquid packaging machinery, and in particular to a filling head for a liquid strip packaging machine. Background Art

[0002] Liquid stick packing machine is a kind of liquid packaging machine, which is widely used in pharmaceutical, health care, food, daily chemical and other industries. The filling head is the key component of liquid stick packing machine for liquid discharging and packaging. The filling head with good performance and perfect functions can greatly improve the sealing of the package and the safety of the product, which is crucial to ensure product quality.

[0003] In the related art, the patent with publication number CN118877255A discloses a material filling mechanism, whose filling head consists of a discharge barrel and a blocking needle, wherein the blocking needle is vertically arranged and has a number of vertically extending blowing channels inside to prevent material from adhering, hanging and dripping, and no dripping or stringing during packaging, and the amount of material entering the packaging bag is more accurate. The upper part of the blocking needle is connected to the telescopic mechanism and is driven by the telescopic mechanism to lift and lower the blocking material in the vertical direction in the discharge barrel. The telescopic mechanism is a pneumatic cylinder, a hydraulic cylinder or an electric cylinder to realize material filling.

[0004] However, during the operation of the liquid strip packaging machine, some viscous or particulate liquid residues adhere to the inclined edge of the filling port or the inner wall of the filling tube, and the air flow blown out by the blowing channel in the prior art cannot completely remove the residues. Utility Model Content

[0005] In order to improve filling quality and reduce liquid residue, the present application provides a filling head for a liquid strip packaging machine.

[0006] The present application provides a filling head for a liquid stick package machine using the following technical solutions:

[0007] A filling head of a liquid strip bag machine includes a filling tube and a sealing device, a filling head is installed at the end of the filling tube, a filling port is provided in the filling head, the sealing device includes a sealing piece and a driving assembly, the sealing piece is slidably inserted into the filling tube, a sealing head is provided at the end of the sealing piece, the driving assembly is used to drive the sealing piece to move so that the sealing head opens and closes the filling port, an air blowing channel is provided inside the sealing piece, the sealing head is provided with an air blowing port connected to the air blowing channel, and the air blowing port is provided with an outward expansion angle so that the air flow out of the air blowing port can be directed toward the inner wall of the filling tube.

[0008] By adopting the above technical solution, the sealing device is slidably penetrated into the filling tube to form an effective seal on the filling port. At the same time, a blowing channel is provided inside the sealing member to effectively prevent the occurrence of liquid dripping. The blowing port is provided with an outward expansion angle so that the air flow out of the blowing port can effectively cover the inner wall of the filling tube, thereby blowing off the liquid remaining on the inner wall, preventing liquid from remaining near the filling port, ensuring that no liquid remains when the strip pack is pressed, and improving the quality of the strip pack filling and pressing.

[0009] Optionally, the outward expansion angle range is 20-130°.

[0010] By adopting the above technical solution, setting the outward expansion angle in the range of 20-130 degrees can enable the airflow from the blowing port to more effectively cover the inner wall of the filling tube, thereby improving the efficiency of removing liquid residue.

[0011] Optionally, the thickness between the inner wall of the blowing port at the maximum inner diameter and the outer wall of the plugging head is 0.5-1.75 mm.

[0012] By adopting the above technical solution, the air outlet can effectively control the air pressure and flow while ensuring sufficient strength and durability, thereby improving the stability of the structure and further reducing the phenomenon of liquid dripping and hanging on the wall.

[0013] Optionally, the outer diameter of the blocking head is larger than the outer diameter of the blocking piece, and the filling head is provided with a drainage cavity near the filling port for accommodating the blocking head and preventing blockage.

[0014] By adopting the above technical solution, reasonable size and structure arrangement facilitates the setting of the outward expansion angle and wall thickness of the sealing piece and the sealing head. The drainage cavity at the filling port prevents blockage when the more viscous or particulate liquid flows through. At the same time, it guides the smooth flow of thinner liquids, reduces the retention and dripping of liquids in the filling tube, and improves the filling effect and stability of the device.

[0015] Optionally, the filling head is detachably connected to the filling tube.

[0016] By adopting the above technical solution, the filling head and the filling tube can be quickly replaced and maintained, thereby improving the flexibility of the equipment.

[0017] Optionally, the filling tube and the blocking member are both cylindrical tubes, and a flow channel for liquid flow is formed between the outer wall of the blocking member and the inner wall of the filling tube.

[0018] By adopting the above technical solution, the unobstructed cylindrical pipe ensures the smooth flow of liquid, and effectively prevents the liquid from remaining on the inner wall of the filling tube, thereby improving the filling efficiency.

[0019] Optionally, the driving assembly includes a sealing part, a connecting part and a telescopic part. The sealing part is arranged at one end of the filling tube, and the connecting part is slidably passed through the sealing part. One end of the connecting part is connected to the sealing part, and the other end is connected to the telescopic part. The telescopic part is used to drive the connecting part to move.

[0020] By adopting the above technical solution, the coordinated use of the sealing part and the connecting part ensures the sealing of the entire system. The sliding fit design between the connecting part and the sealing part allows the sealing part to move smoothly, reduces movement resistance, and improves filling efficiency. The use of telescopic parts simplifies the structure of the drive system, enhances the stability and response speed of the system, and the drive assembly drives the sealing part to move up and down, so that the airflow from the blowing port effectively removes the liquid residue on the inner wall of the filling tube, thereby improving the working stability and reliability of the strip wrapping machine.

[0021] Optionally, a guide channel connected to the blowing channel is provided in the connecting portion, the air inlet of the guide channel is located outside the sealing portion, and the sealing member is provided with a gas inlet connected to the guide channel near the end of the driving assembly.

[0022] By adopting the above technical solution, gas can enter the filling head from the outside, enter through the gas inlet and then pass through the guide channel, ensuring that the gas can be smoothly transmitted to the blowing channel.

[0023] Optionally, a sealing ring is provided between the connecting portion and the sealing portion.

[0024] By adopting the above technical solution, a sealing ring is provided between the connecting portion and the sealing portion, forming a reliable seal between the connecting portion and the sealing portion to prevent gas leakage and effectively prevent external impurities from entering the filling tube.

[0025] Optionally, the blocking head is detachably connected to the blocking piece.

[0026] By adopting the above technical solution, when the plugging head is worn or damaged due to long-term use, a new plugging head can be quickly replaced without replacing the entire plugging part, thereby reducing maintenance costs and time. At the same time, this design allows plugging heads of different specifications to be flexibly replaced according to actual needs, thereby enhancing the adaptability of the equipment.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By providing an air outlet with an outward-expanding bevel on the sealing head of the plugging piece, the airflow can more effectively cover the inner wall of the filling tube during the upward and downward movement of the plugging piece. At the same time, the bevel changes the direction of the airflow, which can more effectively remove liquid residue on the inner wall of the filling tube and near the filling port, greatly improving the filling quality of the liquid stick pack machine.

[0029] 2. The filling tube is equipped with a drainage cavity near the filling port to effectively reduce liquid residue near the plugging head, avoid the accumulation of viscous or particulate liquids that may cause blockage, and guide the liquid to flow smoothly to reduce hanging dripping, thereby improving the stability and reliability of the liquid stick packaging machine.

[0030] 3. The plugging head and the plugging piece are detachably connected, and the filling head and the filling tube are detachably connected, which is convenient for maintenance and replacement, reduces maintenance costs, and increases the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an overall cross-sectional view of the filling head of this application.

[0032] Figure 2 This application Figure 1 A partial enlarged view of part A.

[0033] Figure 3 This application Figure 1 A partial enlarged view of part B.

[0034] Explanation of the accompanying drawings: 1. Filling tube; 2. Sealing device; 21. Sealing part; 22. Drive assembly; 221. Sealing part; 222. Connecting part; 223. Telescopic part; 224. Sealing ring; 2221. Guide channel; 225. Gas inlet; 23. Sealing head; 3. Filling head; 4. Diversion cavity; 5. Filling port; 6. Blowing channel; 7. Blowing port; 8. Outward expansion angle. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-3 This application is described in further detail.

[0036] The embodiment of the present application discloses a liquid stick package machine.

[0037] Reference Figure 1 and Figure 2 A filling head of a liquid strip packing machine includes a filling tube 1 and a sealing device 2. A filling head 3 is installed at the end of the filling tube 1, and a filling port 5 is provided in the filling head 3. The sealing device 2 includes a sealing piece 21 and a driving assembly 22. The sealing piece 21 is slidably penetrated into the filling tube 1. A sealing head 23 is provided at the end of the sealing piece 21. The driving assembly 22 is used to drive the sealing piece 21 to move so that the sealing head 23 opens and closes the filling port 5. A blowing channel 6 is provided inside the sealing piece 21, and the sealing head 23 is provided with a blowing port 7 connected to the blowing channel 6. The blowing port 7 is provided with an outward expansion angle 8 so that the air flow out of the blowing port 7 can be directed toward the inner wall of the filling tube 1.

[0038] Specifically, the filling tube 1 is a cylindrical structure to ensure smooth flow of liquid.

[0039] Furthermore, the inner wall of the filling tube 1 is a smooth surface, which improves the liquid flow efficiency and reduces liquid residue.

[0040] Furthermore, a liquid inlet is provided at one end of the filling tube 1 close to the driving assembly 22 , and the liquid inlet is connected to an external pipeline for conveying liquid into the filling tube 1 .

[0041] In this embodiment, the filling head 3 and the filling tube 1 are connected by a clamp to form a detachable connection for easy replacement. The filling port 5 is arranged in the filling head 3. In other embodiments, the detachable connection method between the filling head 3 and the filling tube 1 can also be a magnetic connection, a threaded connection, etc.

[0042] Specifically, the filling head 3 is provided with a drainage cavity 4 for accommodating the blocking head 23 and preventing blockage. The liquid is smoothly filled to the filling port 5 under the action of the drainage cavity 4. In this embodiment, the shape of the drainage cavity 4 is an approximately spherical cavity. In other embodiments, the shape of the drainage cavity 4 can also be a funnel-shaped or conical cavity.

[0043] Specifically, the blocking member 21 is a cylindrical tube, and a flow channel for liquid flow is formed between the outer wall of the blocking member 21 and the inner wall of the filling tube 1 .

[0044] Specifically, the plugging head 23 is a conical structure, and its outer diameter is slightly smaller than the inner diameter of the filling tube 1 to facilitate smooth sliding.

[0045] Preferably, the outer diameter of the plugging head 23 is larger than the outer diameter of the plugging piece 21 , and the plugging head 23 and the plugging piece 21 are connected in a detachable manner by a clamp, which is convenient for maintenance and replacement.

[0046] In this embodiment, the filling tube 1 and the plugging member 21 are made of stainless steel to ensure their corrosion resistance and durability. In other embodiments, the filling tube 1 and the plugging member 21 can also be made of corrosion-resistant materials such as aluminum alloy.

[0047] Specifically, the blowing port 7 of the blowing channel 6 is provided on the plugging head 23, and its outward expansion angle 8 ranges from 30 to 120 degrees to ensure that the airflow can effectively cover the inner wall of the filling tube 1. The outward expansion angle 8 refers to the angle between the axis of the plugging head 23 and the inner wall of the blowing port 7. Preferably, the outward expansion angle 8 is 50 degrees.

[0048] Furthermore, the thickness between the inner wall at the maximum inner diameter of the blowing port 7 and the outer wall of the sealing head 23 is 0.5-1.75 mm. Preferably, the thickness is 0.7 mm. In other embodiments, the specific value can be determined according to the actual size of the filling port 5 diameter and the inner diameter of the blowing channel 6.

[0049] Reference Figure 2 and Figure 3The driving assembly 22 includes a sealing portion 221, a connecting portion 222 and a telescopic member 223. The sealing portion 221 is arranged at one end of the filling tube 1 to ensure the sealing of the entire driving assembly 22 during operation.

[0050] Specifically, the connecting portion 222 is slidably inserted into the sealing portion 221 . The sealing portion 221 and the connecting portion 222 are designed to slide together, so that the connecting portion 222 can move smoothly within the sealing portion 221 .

[0051] Furthermore, a sealing ring 224 is provided between the connecting portion 222 and the sealing portion 221 to prevent airflow leakage.

[0052] At the same time, one end of the connecting portion 222 is connected to the blocking member 21, and the blocking member 21 can move synchronously with the connecting portion 222. At the same time, the other end of the connecting portion 222 is connected to the telescopic member 223, and the power transmission of the telescopic member 223 drives the connecting portion 222 to move, thereby achieving a rapid response and accurate positioning of the blocking member 21.

[0053] In this embodiment, the telescopic member 223 is a pneumatic cylinder. In other embodiments, the telescopic member 223 may also be an electric cylinder or a hydraulic cylinder. The specific choice depends on the application scenario and cost budget.

[0054] Specifically, a guide channel 2221 communicating with the air blowing channel 6 is defined inside the connecting portion 222 , and a gas inlet 225 communicating with the guide channel 2221 is defined outside the connecting portion 222 , thereby ensuring that the air flow can smoothly enter the air blowing channel 6 .

[0055] Preferably, the blowing channel 6 is a cylindrical channel running through the inside of the blocking member 21 to facilitate gas circulation. Specifically, the air inlet of the blowing channel 6 is arranged at one end of the blocking member 21 close to the drive assembly 22 and is connected to the external air source through the guide channel 2221 in the connecting portion 222.

[0056] The implementation principle of this embodiment is:

[0057] During the filling process, the liquid is transported to the liquid inlet of the filling tube through the conveying pipe, and then enters the liquid channel between the filling tube 1 and the sealing member 21. The liquid is discharged through the drainage cavity 4, and then flows into the strip bag through the filling port 5. When the filling is completed, the driving assembly 22 drives the sealing member 21 to move downward. At the same time, the gas is transmitted to the guide channel 2221 through the gas inlet 225, and then passes through the blowing channel 6 and is blown out from the blowing port 7. The air flow covers the inner wall of the filling tube 1, clears the liquid residue to the filling port 5, and after the sealing member 21 moves downward to the filling port 5, the sealing head 23 closes the filling port 5 to prevent the liquid from continuing to flow out. At the same time, the ejected air flow blows off the dripping liquid hanging at the filling port 5, and the strip bag machine seals the strip bag. After the filling is completed, the sealing head 23 rises, opens the filling port 5, and completes a filling cycle.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A filling head for a liquid stick packing machine, characterized by: The invention comprises a filling tube (1) and a plugging device (2), wherein a filling head (3) is installed at the end of the filling tube (1), and a filling port (5) is provided in the filling head (3), and the plugging device (2) comprises a plugging member (21) and a driving assembly (22), wherein the plugging member (21) is slidably arranged in the filling tube (1), and a plugging head (23) is provided at the end of the plugging member (21), and the driving assembly (22) is used to drive the plugging member (21) to move so that the plugging head (23) opens and closes the filling port (5), and an air blowing channel (6) is provided inside the plugging member (21), and the plugging head (23) is provided with an air blowing port (7) connected to the air blowing channel (6), and the air blowing port (7) is provided with an outward expansion angle (8) so that the air flow from the air blowing port (7) can be directed toward the inner wall of the filling tube (1).

2. The filling head of a liquid stick package machine according to claim 1, characterized in that: The outward expansion angle (8) ranges from 20 to 130 degrees.

3. The filling head of a liquid stick package machine according to claim 1, characterized in that: The thickness between the inner wall of the blowing port (7) at the maximum inner diameter and the outer wall of the plugging head (23) is 0.5-1.75 mm.

4. The filling head of a liquid stick package machine according to claim 1, characterized in that: The outer diameter of the plugging head (23) is greater than the outer diameter of the plugging piece (21), and the filling head (3) is provided with a drainage cavity (4) near the filling port (5) for accommodating the plugging head (23) and preventing blockage.

5. The filling head of a liquid stick package machine according to claim 1, characterized in that: The filling head (3) is detachably connected to the filling tube (1).

6. The filling head of a liquid stick package machine according to claim 1, characterized in that: The filling tube (1) and the blocking member (21) are both cylindrical tubes, and a flow channel for liquid flow is formed between the outer wall of the blocking member (21) and the inner wall of the filling tube (1).

7. The filling head of a liquid stick package machine according to claim 1, characterized in that: The driving assembly (22) comprises a sealing portion (221), a connecting portion (222), and a telescopic member (223); the sealing portion (221) is arranged at one end of the filling tube (1); the connecting portion (222) is slidably inserted into the sealing portion (221); one end of the connecting portion (222) is connected to the blocking member (21), and the other end is connected to the telescopic member (223); the telescopic member (223) is used to drive the connecting portion (222) to move.

8. The filling head of a liquid stick package machine according to claim 7, characterized in that: A guide channel (2221) communicating with the air blowing channel (6) is provided inside the connecting portion (222), and a gas inlet (225) communicating with the guide channel (2221) is provided outside the connecting portion (222).

9. The filling head of a liquid stick package machine according to claim 7, characterized in that: A sealing ring (224) is provided between the connecting portion (222) and the sealing portion (221).

10. The filling head of a liquid stick package machine according to claim 1, characterized in that: The blocking head (23) is detachably connected to the blocking piece (21).

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