Filling head device

Abstract

The utility model relates to a filling head device, which comprises a filling chamber, a filling head, a driving device, a driving device, a driving device and a driving device, and is characterized in that the filling chamber is hollow and is provided with a central hole; the transverse moving seat is mounted on the outer top wall surface of the filling chamber and is driven by the transverse moving cylinder to linearly move along the horizontal direction relative to the filling chamber; the uncovering mechanism is mounted on the transverse moving seat, and the working end of the uncovering mechanism extends into the filling chamber; and the filling mechanism is mounted on the transverse moving seat, and the working end of the filling mechanism extends into the filling chamber. By arranging the uncovering mechanism, cover pulling and covering can be automatically conducted in the filling chamber, the working efficiency is effectively improved, materials in a packaging bag can be effectively prevented from being polluted, and the product quality and safety are improved; and meanwhile, by arranging the filling mechanism, accurate quantitative filling can be achieved, the filling precision is improved, and the consistency of product specifications is effectively guaranteed.

Description

Technical Field

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

[0002] A food filling machine is a device that performs filling in a sterile environment. It is primarily used to fill sterilized beverage products into sterile containers and seal them, ensuring a longer shelf life for the product without refrigeration. The main components of a filling machine include a filling head and a steam sterilization system. The steam sterilization system provides high-temperature steam to the filling head, allowing it to perform filling in a sterile environment.

[0003] In existing technologies, the structure of a filling head mainly includes a filling chamber and a filling head. A steam sterilization system sprays steam into the filling chamber for sterilization. Then, the opened packaging bag is placed into the filling chamber, and the liquid material is filled into the bag through the filling head, thus completing the filling process. However, traditional filling heads mainly have the following problems:

[0004] (1) The manual opening and capping method is inefficient; and the capping of the packaging bag in the room temperature environment after filling is easy to cause the material inside the bag to be contaminated. The control of the sterile environment is relatively rough, making it difficult to achieve true sterile packaging, which affects the quality and safety of the product.

[0005] (2) Relying on weighing sensors to control the filling volume is affected by the accuracy of the weighing sensors and various external factors (material flowability, steam temperature), it is usually difficult to achieve high-precision filling requirements, resulting in low filling accuracy and affecting the consistency of product specifications. Utility Model Content

[0006] Therefore, it is necessary to provide a filling head device to address the problems of low working efficiency, difficulty in achieving true aseptic packaging, low filling accuracy, and poor product specification consistency in existing filling heads.

[0007] The technical solution adopted in this utility model is as follows:

[0008] A filling head device, comprising:

[0009] The filling chamber is hollow inside, and a central hole is opened on its bottom wall surface. The central hole is used for the opening of the outer packaging bag to enter the filling chamber.

[0010] The transverse shift seat is installed on the outer top wall of the filling chamber and moves linearly in the horizontal direction relative to the filling chamber under the drive of the transverse shift cylinder.

[0011] The cap opening mechanism is installed on the horizontal moving base, and its working end extends into the interior of the filling chamber. The cap opening mechanism moves horizontally and linearly relative to the filling chamber under the drive of the horizontal moving base, so that the working end of the cap opening mechanism is aligned with the center hole, thereby opening or closing the bag opening inside the filling chamber.

[0012] The filling mechanism is mounted on a transverse sliding seat, with its working end extending into the filling chamber. Driven by the transverse sliding seat, the filling mechanism moves horizontally and linearly relative to the filling chamber, thereby aligning the working end of the filling mechanism with the center hole and filling the opened packaging bag.

[0013] As a further improvement to the above technical solution:

[0014] The transverse sliding seat is installed in conjunction with the filling chamber via a guide rail assembly.

[0015] The structure of the opening mechanism is as follows: it includes a first cylinder assembly, the output end of the first cylinder assembly is connected to the transverse sliding seat, the output end of the first cylinder assembly is connected to the capping cylinder assembly, and the capping cylinder assembly is fixed on the first lifting plate.

[0016] It also includes a first hollow shaft, the first lifting plate is fixed on the outer circumferential surface of the first hollow shaft, a first drive shaft is concentrically installed inside the first hollow shaft, one end of the first drive shaft is connected to a gripping cylinder fixed on the first lifting plate, and the other end of the first drive shaft is hinged to a gripper assembly, the gripper assembly is also hinged to a mounting base fixed to the shaft end of the first hollow shaft, and a top block is fixed on the outer bottom wall of the mounting base;

[0017] The gripping cylinder drives the first transmission shaft to move linearly in the vertical direction relative to the first hollow shaft, thereby causing the gripper assembly to clamp or release the sealing cap on the bag opening.

[0018] The first cylinder assembly drives the capping cylinder assembly to move linearly in the vertical direction, thereby causing the first lifting plate to move linearly in the vertical direction relative to the filling chamber, and in turn causing the gripper assembly to move linearly in the vertical direction toward or away from the bag opening.

[0019] When the capping cylinder assembly extends, it drives the gripper assembly to move in a straight line in the vertical direction through the first lifting plate, thereby pressing the sealing cap into the bag opening through the top block.

[0020] A first sleeve is fitted onto the outer circumferential surface of the first hollow shaft, and the first sleeve is fixed to the outer top wall of the transverse sliding seat.

[0021] The filling mechanism is structured as follows: it includes a second lifting plate, a second cylinder assembly is fixed on the second lifting plate, the output end of the second cylinder assembly is connected to a transverse sliding seat, the second lifting plate is fixed on the outer circumferential surface of the second hollow shaft, the bottom of the second hollow shaft forms a filling port, and the filling cylinder assembly drives the second transmission shaft to move linearly in the vertical direction relative to the second hollow shaft, thereby opening or closing the filling port through the plug.

[0022] A second drive shaft is concentrically mounted inside the second hollow shaft. The diameter of the second drive shaft is smaller than the inner diameter of the second hollow shaft, thereby forming a filling cavity between the outer wall of the second drive shaft and the inner wall of the second hollow shaft. A feed hole is opened on the wall of the filling cavity, and a feed connector is fitted inside the feed hole. The feed connector is connected to an external material supply system, thereby conveying material into the filling cavity through the external material supply system, and then filling the packaging bag through the filling port.

[0023] One end of the second drive shaft is connected to the filling cylinder assembly, and the other end of the second drive shaft is provided with a plug corresponding to the filling port. The second cylinder assembly drives the second lifting plate to move linearly in the vertical direction, thereby driving the second hollow shaft to move linearly in the vertical direction, so that the filling port is inserted into or removed from the corresponding bag opening.

[0024] The two opposite walls of the filling chamber are respectively equipped with bag clamping mechanisms. The two bag clamping mechanisms move in a straight line, either close to each other or far apart, thereby clamping or releasing the bag openings in the filling chamber.

[0025] The structure of a single bag clamping mechanism is as follows: it includes a clamping cylinder, the output end of which is connected to a clamping plate, and the end face of the clamping plate is provided with an arc-shaped groove corresponding to the shape of the outer wall of the bag opening.

[0026] A sensor assembly is installed on the side wall of the filling chamber to detect whether a sealing cap is installed on the bag opening.

[0027] A lower pad is fitted onto the outer bottom wall of the filling chamber.

[0028] An observation window is provided on the side wall of the filling chamber, and a transparent baffle is installed inside the observation window.

[0029] The beneficial effects of this utility model are as follows:

[0030] This utility model has a compact and reasonable structure and is easy to operate. By setting up a cap opening mechanism, it can automatically remove and install caps inside the filling chamber, effectively improving work efficiency and preventing the materials inside the packaging bag from being contaminated, thus improving product quality and safety. At the same time, by setting up a filling mechanism, it can achieve precise quantitative filling, improve filling accuracy, and effectively ensure product specification consistency.

[0031] This utility model also has the following advantages:

[0032] (1) By setting up a filling chamber, which is filled with high-temperature steam, a sterile environment is provided for filling materials.

[0033] (2) By setting up a bag clamping mechanism, the bag opening of the packaging bag can be clamped during cap removal, cap filling and filling, which effectively improves the stability of the equipment operation process.

[0034] (3) By setting a capping cylinder assembly, the sealing cap is pressed into the corresponding bag opening after filling, thereby ensuring the sealing performance of the packaging bag.

[0035] (4) By setting up an observation window, it is convenient for operators to observe the internal working conditions of the filling room.

[0036] (5) By setting a guide seat, the linear motion of the clamping plate can be limited and guided, thereby further improving the clamping stability of the bag clamping mechanism. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of this utility model.

[0038] Figure 2 This is a full sectional view of the present invention.

[0039] Figure 3 This is a structural schematic diagram of the present invention, omitting the bottom plate and part of the side plate of the filling chamber.

[0040] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0041] Figure 5 This is a full sectional view of the lid-opening mechanism in this utility model.

[0042] Figure 6 This is an exploded view of the lid-opening mechanism in this utility model.

[0043] Figure 7 This is a full sectional view of the filling mechanism in this utility model.

[0044] Figure 8 This is an exploded view of the filling mechanism in this utility model.

[0045] The components include: 1. Filling chamber; 2. Horizontal movement cylinder; 3. Horizontal movement seat; 4. Guide rail assembly; 5. Cap opening mechanism; 6. Filling mechanism; 7. Sensor assembly; 8. Bag clamping mechanism; 9. Clearance hole; 10. Center hole; 11. Lower pad; 12. Observation window;

[0046] 501. First cylinder assembly; 502. Cover cylinder assembly; 503. Gripping cylinder; 504. First lifting plate; 505. First sleeve; 506. First hollow shaft; 507. First drive shaft; 508. Mounting base; 509. Top block; 510. Gripper assembly;

[0047] 601. Second cylinder assembly; 602. Second lifting plate; 603. First filling cylinder; 604. Second filling cylinder; 605. Second sleeve; 606. Second hollow shaft; 607. Second drive shaft; 608. Filling chamber; 609. Filling port; 610. Plug; 611. Feed connector;

[0048] 801. Clamping cylinder; 802. Clamping plate; 803. Arc groove; 804. Guide seat. Detailed Implementation

[0049] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0050] The structure and function of this utility model are as follows:

[0051] like Figures 1-8 As shown, a filling head device includes: a filling chamber 1, which is hollow inside and has a central hole 10 on its bottom wall surface, the central hole 10 being used for the opening of an outer packaging bag to enter the filling chamber 1; a transverse shifting seat 3, installed on the outer top wall surface of the filling chamber 1, which moves horizontally relative to the filling chamber 1 under the drive of a transverse shifting cylinder 2; a cap opening mechanism 5, installed on the transverse shifting seat 3, with its working end extending into the filling chamber 1, the cap opening mechanism 5 moving horizontally relative to the filling chamber 1 under the drive of the transverse shifting seat 3, thereby aligning the working end of the cap opening mechanism 5 with the central hole 10, and thus opening or closing the bag opening inside the filling chamber 1; and a filling mechanism 6, installed on the transverse shifting seat 3, with its working end extending into the filling chamber 1, the filling mechanism 6 moving horizontally relative to the filling chamber 1 under the drive of the transverse shifting seat 3, thereby aligning the working end of the filling mechanism 6 with the central hole 10, and thus filling the opened packaging bag. By setting the cap opening mechanism 5, the caps can be automatically removed and installed inside the filling chamber 1, which can effectively improve work efficiency and prevent the materials inside the packaging bags from being contaminated, thereby improving product quality and safety. At the same time, by setting the filling mechanism 6, precise quantitative filling can be achieved, improving filling accuracy and effectively ensuring product specification consistency.

[0052] This utility model discloses a filling head device for filling packaging bags. The packaging bags are in a bag-in-box format, and their structure includes a bag body with an opening forming the bag mouth. A sealing cap is installed inside the bag mouth, which can be a flat cap or a box cap with an integrated butterfly valve. In the initial state, there is a gap of approximately 5mm between the sealing cap and the bag mouth, facilitating subsequent opening via the gripper assembly 510. When filling the bag, the gap between the sealing cap and the bag mouth needs to be eliminated, and the sealing cap is fully pressed into the bag mouth to achieve a seal on the packaging bag.

[0053] A central hole 10 is provided on the bottom wall of the filling chamber 1 to facilitate the entry and exit of the bag opening and the sealing cap installed on the bag opening into the filling chamber 1. A lower pad 11 is installed on the outer bottom wall of the filling chamber 1. The lower pad 11 is made of polytetrafluoroethylene. An observation window 12 is provided on the side wall of the filling chamber 1. A transparent baffle is installed inside the observation window 12. The transparent baffle is made of transparent plastic or transparent glass to facilitate the operator to observe the internal working conditions of the filling chamber 1.

[0054] The transverse shift seat 3 is installed in conjunction with the filling chamber 1 via the guide rail assembly 4, thereby improving the movement stability of the transverse shift seat 3. In this invention, the transverse shift seat 3 moves linearly under the drive of two symmetrically arranged transverse shift cylinders 2. The two transverse shift cylinders 2 are fixed to the top of the filling chamber 1, and the output ends of the two transverse shift cylinders 2 are connected to the transverse shift seat 3. The transverse shift seat 3 is equipped with a cap opening mechanism 5 and a filling mechanism 6. When it is necessary to remove or insert the sealing cap, the transverse shift seat 3 drives the cap opening mechanism 5 to align with the center hole 10. When it is necessary to fill, the transverse shift seat 3 drives the filling mechanism 6 to align with the center hole 10. In order to ensure the smooth movement of the transverse shift seat 3, a clearance hole 9 is provided on the top plate end face of the filling chamber 1. The clearance hole 9 is used to avoid the parts of the cap opening mechanism 5 and the filling mechanism 6 located inside the cavity.

[0055] The cap-opening mechanism 5 is used to pull the sealing cap out of the bag opening, or to insert the sealing cap into the bag opening, such as... Figures 5-6As shown, the structure of the cover opening mechanism 5 is as follows: it includes a first cylinder assembly 501, the output end of which is connected to the transverse sliding seat 3, and the output end of the first cylinder assembly 501 is connected to the cover pressing cylinder assembly 502, which is fixed to the first lifting plate 504; it also includes a first hollow shaft 506, the first lifting plate 504 is fixed to the outer circumference of the first hollow shaft 506, a first drive shaft 507 is concentrically installed inside the first hollow shaft 506, one end of the first drive shaft 507 is connected to the gripping cylinder 503 fixed to the first lifting plate 504, and the other end of the first drive shaft 507 is hinged to a gripper assembly 510, which is also hinged to a mounting base 508 fixed to the shaft end of the first hollow shaft 506, and the outer bottom of the mounting base 508... A top block 509 is fixed on the wall; a gripping cylinder 503 drives the first transmission shaft 507 to move linearly in the vertical direction relative to the first hollow shaft 506, causing each gripper in the gripper assembly 510 to rotate around its corresponding hinge point with the mounting base 508, thereby causing the gripper assembly 510 to clamp or loosen the sealing cap on the bag opening; a first cylinder assembly 501 drives the capping cylinder assembly 502 to move linearly in the vertical direction, thereby causing the first lifting plate 504 to move linearly in the vertical direction relative to the filling chamber 1, and further causing the gripper assembly 510 to move linearly in the vertical direction closer to or away from the bag opening; when the capping cylinder assembly 502 extends, it drives the gripper assembly 510 to move linearly in the vertical direction via the first lifting plate 504, thereby pressing the sealing cap into the bag opening via the top block 509. When the sealing cap is pulled out of the bag opening, the first cylinder assembly 501 drives the first lifting plate 504 to move vertically, thereby driving the gripper assembly 510 to move linearly vertically via the first hollow shaft 506, and then pulling the sealing cap out of the bag opening via the gripper assembly 510. When the sealing cap is inserted into the bag opening, the first cylinder assembly 501 drives the first lifting plate 504 to move vertically, thereby driving the gripper assembly 510 via the first hollow shaft 506 to place the sealing cap into the corresponding bag opening. Then, the cap pressing cylinder assembly 502 drives the first lifting plate 504 to move vertically, thereby driving the top block 509 via the first hollow shaft 506 to press the sealing cap into the corresponding bag opening. By setting up a capping cylinder assembly 502, after the first cylinder assembly 501 drives the gripper assembly 510 to put the sealing cap into the corresponding bag opening (at this time, there is still a gap of about 5mm between the sealing cap and the bag opening), the sealing cap is pressed into the corresponding bag opening, thereby ensuring the sealing performance of the packaging bag.

[0056] The first cylinder assembly 501 includes two first cylinders, which are symmetrically arranged on both sides of the first hollow shaft 506; the capping cylinder assembly 502 includes two capping cylinders, which are symmetrically arranged on both sides of the gripping cylinder 503.

[0057] A first sleeve 505 is fitted onto the outer circumferential surface of the first hollow shaft 506, and the first sleeve 505 is fixed to the outer top wall of the transverse shift seat 3. A first sealing ring assembly is fitted between the inner wall of the first sleeve 505 and the outer circumferential surface of the first hollow shaft 506, and the sealing performance of the filling chamber 1 is ensured by setting the first sealing ring assembly.

[0058] The filling mechanism 6 is used to quantitatively fill the packaging bag with material through the bag opening, such as... Figures 7-8 As shown, the filling mechanism 6 has the following structure: it includes a second lifting plate 602, on which a second cylinder assembly 601 is fixed. The output end of the second cylinder assembly 601 is connected to a transverse sliding seat 3. The second lifting plate 602 is fixed to the outer circumferential surface of the second hollow shaft 606. A filling port 609 is formed at the bottom of the second hollow shaft 606. The filling cylinder assembly drives the second transmission shaft 607 to move linearly in the vertical direction relative to the second hollow shaft 606, thereby opening or closing the filling port 609 through the plug 610. The second transmission shaft 607 is concentrically installed inside the second hollow shaft 606. The diameter of the second transmission shaft 607 is smaller than the inner diameter of the second hollow shaft 606, so that the outer wall of the second transmission shaft 607 and the second hollow shaft 606 are aligned. A filling cavity 608 is formed between the inner walls of shaft 606. A feed hole is opened on the wall of filling cavity 608, and a feed connector 611 is installed in the feed hole. The feed connector 611 is connected to an external material supply system, so that material is conveyed into filling cavity 608 through external material supply system, and then the packaging bag is filled through filling port 609. One end of the second drive shaft 607 is connected to the filling cylinder assembly. At the same time, the other end of the second drive shaft 607 is provided with a plug 610 corresponding to filling port 609. The second cylinder assembly 601 drives the second lifting plate 602 to move linearly in the vertical direction, thereby driving the second hollow shaft 606 to move linearly in the vertical direction, so that filling port 609 is inserted into or removed from the corresponding bag opening. A sealing ring is fitted onto the outer circumference of the plug 610. The filling cylinder assembly drives the second transmission shaft 607 to move vertically upwards or downwards relative to the second hollow shaft 606, thereby opening or closing the filling port 609 through the sealing ring. By setting the filling mechanism 6, which controls the stroke of the filling cylinder assembly based on time parameters, high-precision filling can be achieved.

[0059] The filling cylinder assembly includes a first filling cylinder 603 and a second filling cylinder 604 arranged in series vertically. By controlling the extension or retraction of the piston rods of the first filling cylinder 603 and the second filling cylinder 604, the gap between the inner wall of the filling port 609 and the outer circumferential surface of the plug 610 is adjusted, thereby adjusting the flow rate of material flowing out of the filling port 609. In this invention, the filling mechanism 6 has a high-flow-rate working mode and a low-flow-rate working mode. In the high-flow-rate working mode, both the first filling cylinder 603 and the second filling cylinder 604 are retracted; in the low-flow-rate working mode, one filling cylinder extends while the other retracts; when both the first filling cylinder 603 and the second filling cylinder 604 are extended, the filling port 609 is completely blocked by the material-blocking sealing ring and is in a closed state.

[0060] A second sleeve 605 is fitted on the outer circumferential surface of the second hollow shaft 606. The second sleeve 605 is fixed to the outer top wall of the filling chamber 1. A second sealing ring is fitted between the inner side wall of the second sleeve 605 and the outer side wall of the second hollow shaft 606 to ensure the sealing of the filling chamber 1.

[0061] like Figures 2-3 As shown, bag clamping mechanisms 8 are installed on opposite side walls of the filling chamber 1. The two bag clamping mechanisms 8 move in a linear motion, either close to or far apart, to clamp or release the bag openings inside the filling chamber 1. By setting the bag clamping mechanisms 8, the bag openings can be clamped during cap removal, cap filling, and filling, effectively improving the stability of the equipment during operation.

[0062] like Figures 3-4 As shown, the structure of a single bag-clamping mechanism 8 includes a clamping cylinder 801, the output end of which is connected to a clamping plate 802. An arc-shaped groove 803, corresponding to the shape of the outer wall of the bag opening, is provided on the end face of the clamping plate 802. The single bag-clamping mechanism 8 also includes a guide seat 804 fixed to the bottom wall of the filling chamber 1. The guide seat 804 is used to limit and guide the linear movement of the clamping plate 802, thereby further improving the clamping stability of the bag-clamping mechanism 8.

[0063] A sensor assembly 7 is installed on the side wall of the filling chamber 1 to detect whether a sealing cap is installed on the bag opening. For a single filling chamber 1, the sensor assembly 7 is installed on one side wall of the chamber. Specifically, the sensor assembly 7 is installed on a side plate near the capping mechanism 5. The sensor assembly 7 is used to detect whether a sealing cap is installed on the bag opening, thereby realizing automatic capping and capping.

[0064] The working process of this utility model is as follows:

[0065] In this utility model, before filling a batch of materials, the filling chamber 1 is first sterilized. After sterilization, before filling, an appropriate amount of steam is introduced into the filling chamber 1 to keep the inside of the chamber within a suitable temperature range and maintain an appropriate positive pressure. At this time, the inside of the chamber is in a sterile state.

[0066] Then the filling process begins. The operator inserts the bag opening (with a sealing cap) into the filling chamber 1 through the central hole 10. The two transverse cylinders 2 are activated, and the cap opening mechanism 5 moves in a straight line in the horizontal direction through the transverse seat 3, so that the gripper assembly 510 is aligned with the central hole 10, and then the sealing cap is pulled out through the cap opening mechanism 5.

[0067] Next, the two transverse cylinders 2 are started, and the transverse seat 3 drives the filling mechanism 6 to move in a straight line in the horizontal direction, so that the filling port 609 is aligned with the center hole 10. The external material supply system fills the packaging bag with material through the feed connector 611, filling chamber 608, and filling port 609.

[0068] Then, the two transverse cylinders 2 are activated, and the transverse seat 3 drives the opening mechanism 5 to move in a straight line in the horizontal direction again, so that the gripper assembly 510 is aligned with the center hole 10 again, and then the opening mechanism 5 inserts the sealing cap into the bag mouth to seal it.

[0069] Finally, the operator removes the filled packaging bags; the above steps are repeated until all packaging bags have been filled.

[0070] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A filler head device, characterized by: It includes: Filling chamber (1), the inside hollow, the bottom wall surface is provided with center hole (10), the center hole (10) is used for the bag mouth of external packaging bag to enter the inside of filling chamber (1); Horizontal moving seat (3) is installed on the outer top wall surface of filling chamber (1), and is driven by horizontal moving cylinder (2) to make linear motion along horizontal direction relative to filling chamber (1); Cover opening mechanism (5) is installed on horizontal moving seat (3), and the working end thereof extends into the inside of filling chamber (1), and the cover opening mechanism (5) is driven by horizontal moving seat (3) to make linear motion along horizontal direction relative to filling chamber (1), so that the working end of cover opening mechanism (5) is aligned with center hole (10), and then the bag mouth in the inside of filling chamber (1) is opened or closed; Filling mechanism (6) is installed on horizontal moving seat (3), and the working end thereof extends into the inside of filling chamber (1), and the filling mechanism (6) is driven by horizontal moving seat (3) to make linear motion along horizontal direction relative to filling chamber (1), so that the working end of filling mechanism (6) is aligned with center hole (10), and then the packaging bag after opening cover is filled.

2. A filling head device according to claim 1, characterized in that: The horizontal moving seat (3) is installed in cooperation with filling chamber (1) through guide rail assembly (4).

3. A filling head assembly as claimed in claim 1, characterized in that: The structure of cover opening mechanism (5) is that: it includes first cylinder assembly (501), the output end of first cylinder assembly (501) is connected with horizontal moving seat (3), the output end of first cylinder assembly (501) is connected with gland cylinder assembly (502), and the gland cylinder assembly (502) is fixed on first lifting plate (504); It also includes first hollow shaft (506), the first lifting plate (504) is fixed on the outer circumferential surface of first hollow shaft (506), the inside of first hollow shaft (506) is concentrically installed with first transmission shaft (507), one end of first transmission shaft (507) is connected with grabbing cylinder (503) fixed on first lifting plate (504), simultaneously, the other end of first transmission shaft (507) is hinged with clamping jaw assembly (510), the clamping jaw assembly (510) is also hinged with mounting seat (508) fixed on the shaft end of first hollow shaft (506), and the outer bottom wall surface of mounting seat (508) is fixed with top block (509); The grabbing cylinder (503) drives first transmission shaft (507) to make linear motion along vertical direction relative to first hollow shaft (506), so as to drive clamping jaw assembly (510) to clamp or loosen the sealing cover on bag mouth; The first cylinder assembly (501) drives gland cylinder assembly (502) to make linear motion along vertical direction, so as to drive first lifting plate (504) to make linear motion along vertical direction relative to filling chamber (1), and then drive clamping jaw assembly (510) to make linear motion along vertical direction to approach or move away from bag mouth; When the gland cylinder assembly (502) is extended, the clamping jaw assembly (510) is driven by first lifting plate (504) to make linear motion along vertical direction, so as to press the sealing cover in the bag mouth through top block (509).

4. A filling head assembly according to claim 3, wherein: The outer circumferential surface of the first hollow shaft (506) is fitted and mounted with a first sleeve (505), and the first sleeve (505) is fixed to the outer top wall surface of the horizontal moving seat (3).

5. A filler head assembly as claimed in claim 1, characterized in that: The structure of the filling mechanism (6) is that: a second lifting plate (602) is fixed with a second cylinder assembly (601), the output end of the second cylinder assembly (601) is connected with the horizontal moving seat (3), the second lifting plate (602) is fixed to the outer circumferential surface of a second hollow shaft (606), the bottom of the second hollow shaft (606) forms a filling port (609), and a filling cylinder assembly is further included, the filling cylinder assembly drives a second transmission shaft (607) to move linearly along the vertical direction relative to the second hollow shaft (606), so that the filling port (609) is opened or closed through a plug (610); The inside of the second hollow shaft (606) is concentrically mounted with the second transmission shaft (607), the diameter of the second transmission shaft (607) is smaller than the inner diameter of the second hollow shaft (606), so that a filling cavity (608) is formed between the outer side wall surface of the second transmission shaft (607) and the inner side wall surface of the second hollow shaft (606), the wall surface of the filling cavity (608) is provided with a feeding hole, a feeding connector (611) is fitted and mounted in the feeding hole, the feeding connector (611) is connected with an external material supply system, so that the material supply system is used for conveying material into the filling cavity (608), and then the package bag is filled through the filling port (609); One end of the second transmission shaft (607) is connected with the filling cylinder assembly, and the other end of the second transmission shaft (607) is provided with the plug (610) corresponding to the filling port (609), the second cylinder assembly (601) drives the second lifting plate (602) to move linearly along the vertical direction, so as to drive the second hollow shaft (606) to move linearly along the vertical direction, and then the filling port (609) is inserted into or separated from the corresponding bag port.

6. A filler head assembly as claimed in claim 1, characterized in that: The opposite side wall surfaces of the filling chamber (1) are respectively provided with bag port clamping mechanisms (8), and the two bag port clamping mechanisms (8) move linearly close to or away from each other, so as to clamp or loosen the bag port in the filling chamber (1).

7. A filling head assembly according to claim 6, characterised in that: The structure of a single bag port clamping mechanism (8) is that: a clamping cylinder (801) is included, the output end of the clamping cylinder (801) is connected with a clamping plate (802), and the end surface of the clamping plate (802) is provided with an arc-shaped groove (803) corresponding to the shape of the outer side wall surface of the bag port.

8. A filler head assembly as claimed in claim 1, characterized in that: A sensor assembly (7) is fitted and mounted on the side wall surface of the filling chamber (1), which is used for detecting whether the bag port is provided with a sealing cover.

9. A filler head assembly as claimed in claim 1, characterized in that: A lower backing plate (11) is fitted and mounted on the outer bottom wall surface of the filling chamber (1).

10. A filler head assembly as claimed in claim 1, characterised in that: An observation window (12) is provided in the side wall surface of the filling chamber (1), and a transparent baffle is fitted and mounted in the observation window (12).

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