A large-volume continuous perfusion system

Abstract

The present invention relates to a large-capacity continuous filling system, and relates to the technical field of liquid filling, including a filling unit for milk filling, a molding unit for molding packaging materials after filling, and two frame plates; wherein, the molding unit includes two sets of driving mechanisms, and the two sets of driving mechanisms are symmetrically distributed along the frame plates, and the molding unit also includes two molding mechanisms and two positioning rods arranged on the driving mechanisms and used for molding packaging materials. The large-capacity continuous filling system ensures that the capacity of each package of products is within a strictly controlled range, and comprehensively matches the filling flow, the running speed of the clamping jaws, and the pressure and speed of the extrusion molding, which can effectively reduce the fluctuation caused by excessive or insufficient pressure during the molding process, further ensure the stability of the filling capacity, and use a PLC controller to monitor and adjust the entire filling process in real time, including all links from liquid level detection to flow control to final packaging molding, and realizes highly automated operation.

Description

Technical Field

[0001] The invention relates to the technical field of liquid perfusion, in particular to a large-capacity continuous perfusion system. Background Art

[0002] The large-volume continuous filling system for milk is a device specially designed to efficiently and accurately fill liquid (in this case, milk) into packaging materials. This system is particularly suitable for filling production lines for aseptic paper packaging. It is designed to ensure the volume stability and product quality of each package of product under high-speed production conditions. This large-volume continuous filling system is particularly suitable for production lines that require high-precision and high-efficiency filling operations, especially in the food and beverage industry.

[0003] When filling and packaging products in aseptic paper packaging, there are strict requirements on the filling accuracy to ensure that each package of products is within the controlled capacity range. The current filling form of aseptic paper packaging is affected by multiple factors such as production speed, filling pressure, flow, molding structure, and molding extrusion speed, which has an impact on the stability of capacity and affects product quality. In summary, the existing large-capacity continuous filling system for milk is difficult to maintain the capacity consistency of each package of products under a high-speed production environment. Secondly, there may be capacity differences between different batches of products due to changes in filling pressure and flow. If the design of the molding structure is unreasonable, it may have a negative impact on the capacity stability. Speed ​​fluctuations during the extrusion molding process will affect the shape and capacity of the final product. Under the combined effect of the above-mentioned multiple factors (production speed, filling pressure, flow, molding structure and extrusion speed), it is easy to have an impact on the stability of capacity, thereby affecting product quality. Due to the existence of these variables, maintaining a constant product capacity becomes a challenge, especially in the pursuit of efficient production and high output. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a large-capacity continuous perfusion system, which has the advantages of ensuring the stability of the perfusion capacity, etc., and solves the difficult problem of maintaining the consistency of the capacity of each package of product under high-speed production conditions.

[0005] To achieve the above object, the present invention provides the following technical solutions: a large-capacity continuous filling system, comprising a filling unit for filling milk, a forming unit for shaping the packaging material after filling, and two frame plates;

[0006] The molding unit comprises two sets of driving mechanisms, and the two sets of driving mechanisms are symmetrically distributed along the frame plate. The molding unit also comprises two shaping mechanisms and two positioning rods arranged on the driving mechanisms and used for shaping the packaging materials. The outer sides of the two positioning rods are slidably connected with sliding sleeves.

[0007] Each of the driving mechanisms comprises two hangers and two driving motors A, the insides of the two hangers are rotatably connected with movable wheels A through shafts, one end of the output shafts of the two driving motors A is fixed with movable wheels B, the outer sides of the movable wheels A and B on the same vertical line are both connected with transmission belts, the outer sides of the two transmission belts are fixed with mounting frames, the insides of the two mounting frames are respectively fixed with driving rods A and driving rods B, and one end of the two driving rods A is respectively fixed between the two sliding sleeves;

[0008] Each of the shaping mechanisms comprises a mounting plate fixed to one side of the two slide sleeves, each of the mounting plates is rotatably connected to two connecting frames via two shafts, a mounting seat is fixed to one side of the connecting frame, a base plate is fixed to the bottom end of the two driving rods B, the base plates on the left and right sides are respectively hinged to the two connecting frames on the mounting plates on the left and right sides via shafts, and one side of the two connecting frames on each of the shaping mechanisms is rotatably connected to a half gear via a shaft and is driven by meshing of the half gears;

[0009] The molding unit also includes a sealing mechanism arranged on the mounting seat, the sealing mechanism includes a spring fixed to the inner wall of one side of the mounting seat, a positioning sleeve rod located in the spring is fixed to the inner wall of one side of the mounting seat, the spring and one side of the positioning sleeve rod are fixed with the same sealing hot knife, two pistons are fixed inside the mounting seat, and one side of the piston is fixed to the sealing hot knife, a top seat is fixed to the upper surface of the mounting seat, a clamping claw is rotatably connected to the upper surface of the top seat through a shaft rod, and the top seat and the clamping claw are elastically connected through a tension spring, both sides of the clamping claw are rotatably connected with a pressure rod, and two positioning rails are fixed to the opposite sides of the two frame plates;

[0010] The top seat is provided with an auxiliary mechanism for assisting the pushing of the packaging bag after forming, and the auxiliary mechanism includes a push rod movably connected to the inside of the top seat and moving linearly, the inside of the top seat is rotatably connected to a rotating rod with one end penetrating and extending to the outside of the top seat through a bearing, a swing piece is fixed to the outside of the rotating rod, a connecting piece is fixed to the outside of the rotating rod, a lower surface of the connecting piece is rotatably connected to a lever through a bearing, and a push frame in a close fit with the lever is fixed to one end of the push rod;

[0011] Two boosting chambers are formed inside the mounting seat, and the two pistons on each mounting seat are respectively located in the two boosting chambers, and a boosting port is opened on one side of the mounting seat, and the boosting port is communicated with the boosting chamber.

[0012] Furthermore, the horizontal height of the sliding sleeve is greater than the horizontal height of the sliding sleeve on the left side, and the horizontal heights of the sliding sleeves on the front and rear sides are equal.

[0013] Furthermore, the auxiliary mechanism also includes side frames arranged on both sides of the frame plate, a mounting plate is arranged on one side of the side frame, two eccentric wheels are movably connected inside the mounting plate, one side of the eccentric wheel is rotatably connected to a base rod through a bearing, the same push plate is fixed to the outer sides of the two base rods, and a drive motor B is arranged on one side of the two side frames, and one end of the output shaft of the two drive motors B is respectively fixed between the two lower eccentric wheels.

[0014] Furthermore, the perfusion unit includes a perfusion pipe, a magnetic float, a pressure flange, a magnetic liquid level sensor, a PLC controller, a proportional valve, and a regulating valve; the magnetic float and the pressure flange are both movably sleeved on the outside of the perfusion pipe.

[0015] Furthermore, the perfusion unit also includes a cylinder, a bracket is fixed to one end of the cylinder output shaft, the bracket is fixed to the perfusion pipe, one end of the perfusion pipe is connected and fixed to the regulating valve through a pipeline, the regulating valve and the proportional valve are connected and fixed through an air pressure pipe, and the PLC controller is connected to the proportional valve and the magnetic liquid level sensor by electrical signals.

[0016] Furthermore, the positioning sleeve rod includes a limiting rod and a rod sleeve, one end of the rod sleeve is fixed to the sealing hot knife, one end of the limiting rod is fixed to the inner wall of the mounting seat and is located in the spring, and the limiting rod and the rod sleeve are slidably connected.

[0017] Furthermore, a movable opening is opened on the left side of the top seat, the push rod is linearly slidably connected to the inside of the movable opening, and one end passes through the movable opening to the outside of the top seat, a cross frame is fixedly connected between the two frame plates, and one side of the cross frame is rotatably connected to a guide roller through an axle rod.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] This large-capacity continuous filling system ensures that the capacity of each package of product is within a strictly controlled range. It comprehensively matches the filling flow, the gripper running speed, the extrusion molding pressure and speed, which can effectively reduce the fluctuations caused by excessive or insufficient pressure during the molding process, and further ensure the stability of the filling capacity. The PLC controller is used to monitor and adjust the entire filling process in real time, including all links from liquid level detection to flow control to final packaging molding, achieving highly automated operation, reducing manual intervention, and improving production efficiency. The system can effectively maintain the capacity consistency of each package of product and ensure efficient operation procedures throughout the filling and sealing process, which is not only conducive to improving the production quality of the product, but also can maintain stability and reliability in a high-speed production environment. In summary, the beneficial effects of this large-capacity continuous filling system are mainly reflected in its significant improvement of production efficiency and product quality, and enhanced equipment stability and automation level, which is of great significance to improving the manufacturing capacity of the food and beverage industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the driving mechanism of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the shaping mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the sealing mechanism structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the partial structure of the sealing mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0026] Figure 7 It is a schematic diagram of the partial structure of the auxiliary mechanism of the present invention.

[0027] In the figure: 1 pouring unit, 11 pouring pipe, 12 magnetic float, 13 pressure flange, 14 magnetic liquid level sensor, 15 PLC controller, 16 proportional valve, 17 regulating valve, 18 cylinder, 2 molding unit, 21 driving mechanism, 211 hanger, 212 driving motor A, 213 movable wheel A, 214 movable wheel B, 215 driving belt, 216 mounting frame, 217 driving rod A, 218 driving rod B, 22 molding mechanism, 221 mounting plate, 222 connecting frame, 223 mounting seat, 224 substrate, 225 half gear, 23 positioning rod, 24 sliding sleeve, 25 sealing mechanism, 251 spring, 252 positioning sleeve rod, 253 sealing hot knife, 254 piston, 255 top seat, 256 clamping claw, 257 pressure rod, 258 positioning track, 3 frame plate, 4 auxiliary mechanism, 41 push rod, 42 rotating rod, 43 swing piece, 44 connecting piece, 45 lever, 46 push frame, 47 side frame, 48 mounting plate, 49 base rod, 410 push plate, 411 driving motor B, 412 eccentric wheel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-7 , a large-capacity continuous filling system in this embodiment includes a filling unit 1 for filling milk, a forming unit 2 for shaping the packaging material after filling, and two frame plates 3;

[0030] The forming unit 2 includes two sets of driving mechanisms 21, and the two sets of driving mechanisms 21 are symmetrically distributed along the frame plate 3. The forming unit 2 also includes two shaping mechanisms 22 and two positioning rods 23 arranged on the driving mechanisms 21 and used for shaping the packaging materials. The outer sides of the two positioning rods 23 are slidably connected with sliding sleeves 24. The horizontal height of the sliding sleeves 24 is greater than the horizontal height of the left sliding sleeve 24, and the horizontal heights of the sliding sleeves 24 on the front and rear sides are equal.

[0031] It should be noted that the design of the molding unit 2 realizes efficient and accurate molding operations on the packaging materials through two sets of driving mechanisms 21 symmetrically distributed on both sides of the perfusion tube 11, and two molding mechanisms 22 and positioning rods 23 arranged thereon. The sliding connection between the sliding sleeve 24 and the positioning rod 23 not only ensures the flexibility of the structure, but also adjusts the height difference of the sliding sleeve 24 so that the right side sliding sleeve 24 is higher than the left side, and the front and rear sides remain level, thereby ensuring that the packaging materials are uniformly stressed and have regular shapes during the molding process, thereby effectively improving the quality and consistency of the final product. This design not only optimizes space utilization, but also enhances the stability and efficiency of equipment operation.

[0032] Each driving mechanism 21 includes two hangers 211 and two driving motors A212. The insides of the two hangers 211 are rotatably connected to movable wheels A213 through shafts. One end of the output shafts of the two driving motors A212 is fixed with movable wheels B214. The outer sides of the movable wheels A213 and B214 on the same vertical line are both connected to drive belts 215. The outer sides of the two driving belts 215 are fixed with mounting frames 216. The insides of the two mounting frames 216 are respectively fixed with driving rods A217 and driving rods B218, and one end of the two driving rods A217 is respectively fixed between the two sliding sleeves 24.

[0033] The movable wheel A213, the movable wheel B214 and the transmission belt 215 are all provided with knurling to increase their surface roughness, thereby increasing friction to prevent the transmission belt 215 from slipping.

[0034] It should be noted that the design of the driving mechanism 21 ensures the compactness of the structure and the transmission efficiency through the coordinated work of two hangers 211 and two driving motors A212, using an axle to connect the movable wheel A213 and the movable wheel B214, and realizing power transmission through a transmission belt 215. Each driving motor A212 drives the corresponding movable wheel B214, and then synchronously drives the movable wheel A213 through the transmission belt 215, so that the mounting frame 216 and the driving rod A217 and driving rod B218 fixed inside it can accurately control the movement of the sliding sleeve 24. This design not only realizes efficient and precise position adjustment, but also enhances the stability and response speed of the system through the dual driving motor and transmission belt 215 system, thereby improving the operating accuracy and reliability of the entire molding unit 2.

[0035] Each shaping mechanism 22 includes a mounting plate 221 fixed on the opposite side of the two sliding sleeves 24, and the interior of each mounting plate 221 is rotatably connected to two connecting frames 222 through two shafts, and a mounting seat 223 is fixed to one side of the connecting frame 222. The bottom ends of the two driving rods B218 are fixed to base plates 224, and the left and right base plates 224 are respectively hinged to the two connecting frames 222 on the left and right mounting plates 221 through shafts. One side of the two connecting frames 222 on each shaping mechanism 22 is rotatably connected to a half gear 225 through the shaft and is meshed and driven by the half gear 225. Two boost chambers are formed inside the mounting seat 223, and two pistons 254 on each mounting seat 223 are respectively located in the two boost chambers, and a boost port is opened on one side of the mounting seat 223, which is connected to the boost chamber.

[0036] It should be noted that the design of the shaping mechanism 22 realizes efficient and accurate shaping of the packaging material through precise mechanical linkage and boosting system. Each shaping mechanism 22 includes a mounting plate 221 fixed on the sliding sleeve 24, and two connecting frames 222 are connected by an axle rod, so that the entire structure can flexibly adjust the position and angle under the action of the driving rod B218 and the base plate 224. Two boosting chambers are arranged inside the mounting seat 223 fixed on the connecting frame 222. The pressure is adjusted by the movement of the piston 254 in the boosting chamber to ensure that the packaging material obtains uniform pressure distribution during the molding process. In addition, the meshing transmission between the half gears 225 further enhances the synchronization and stability of the device's action, and ensures the consistency of shaping on both sides. This design not only improves the operating accuracy and response speed of the equipment, but also optimizes the molding effect of the packaging material through the application of the boosting system, thereby significantly improving the quality and production efficiency of the final product.

[0037] Among them, the molding unit 2 also includes a sealing mechanism 25 arranged on the mounting seat 223, and the sealing mechanism 25 includes a spring 251 fixed to the inner wall of one side of the mounting seat 223, and a positioning sleeve rod 252 located in the spring 251 is fixed to the inner wall of one side of the mounting seat 223, and the same sealing hot knife 253 is fixed to one side of the spring 251 and the positioning sleeve rod 252, and two pistons 254 are fixed inside the mounting seat 223, and one side of the piston 254 is fixed to the sealing hot knife 253, and a top seat 255 is fixed to the upper surface of the mounting seat 223, and the upper surface of the top seat 255 is rotatably connected to a clamping claw 256 through an axle rod, and the top seat 255 and the clamping claw 256 are elastically connected by a tension spring, and both sides of the clamping claw 256 are rotatably connected to pressure rods 257, and two positioning rails 258 are fixed to the opposite sides of the two frame plates 3.

[0038] It should be noted that the sealing mechanism 25 provided in the molding unit 2 realizes efficient and accurate sealing operation of the packaging material through a series of precise designs. The mechanism includes a spring 251 and a positioning sleeve rod 252 fixed to the inner wall of the mounting seat 223, which act together on the sealing hot knife 253 to ensure that it can perform the sealing operation with a stable pressure. The sealing hot knife 253 is connected to the piston 254, so that it can not only achieve effective sealing under heating conditions, but also adjust the applied pressure as needed to ensure the consistency of the sealing quality.

[0039] The clamping jaw 256 is rotatably connected to the top seat 255 through an axle rod and is elastically connected to the top seat 255 through a tension spring, which provides a flexible and stable clamping force, helping to maintain the position stability of the packaging material during the sealing process. The pressure rods 257 rotatably connected on both sides of the clamping jaw 256 further enhance the control of the packaging material and ensure the accuracy and reliability of the sealing process. The positioning rails 258 on the two frame plates 3 provide guidance and support for the entire sealing process, ensuring that all actions are performed accurately and without error.

[0040] Among them, an auxiliary mechanism 4 for assisting in pushing the packaging bag after forming is arranged on the top seat 255, and the auxiliary mechanism 4 includes a push rod 41 which is movably connected to the inside of the top seat 255 and moves linearly, and the inside of the top seat 255 is rotatably connected to a rotating rod 42 with one end passing through and extending to the outside of the top seat 255 through a bearing, and a swing piece 43 is fixed to the outside of the rotating rod 42, and a connecting piece 44 is fixed to the outside of the rotating rod 42, and the lower surface of the connecting piece 44 is rotatably connected to a lever 45 through a bearing, and one end of the push rod 41 is fixed to a push frame 46 which is in a close fit with the lever 45.

[0041] It should be noted that the auxiliary mechanism 4 significantly improves the processing efficiency and accuracy of the formed packaging bags through a series of ingeniously designed mechanical components. The linear movable push rod 41 arranged inside the top seat 255 can realize complex motion conversion through the swing piece 43 and the connecting piece 44 fixed on its outside, driven by the rotating rod 42 connected by the bearing rotation. The lower surface of the connecting piece 44 is tightly matched with the push rod 45 connected by the bearing rotation and the push frame 46 at the end of the push rod 41, so that the push rod 41 can drive the lever 45 to rotate during linear motion, thereby pushing the formed packaging bags to be smoothly removed. This design not only realizes efficient and smooth packaging bag pushing operation, but also ensures the accuracy and reliability of the action through the precise cooperation between the various components, greatly improving the overall efficiency and automation level of the production line. Its flexibility and precise control capabilities also enable the equipment to adapt to packaging bags of different sizes and types, enhancing the versatility and adaptability of the system.

[0042] Among them, the auxiliary mechanism 4 also includes side frames 47 arranged on both sides of the frame plate 3, and a mounting plate 48 is arranged on one side of the side frame 47. Two eccentric wheels 412 are movably connected inside the mounting plate 48. One side of the eccentric wheel 412 is rotatably connected to a base rod 49 through a bearing. The same push plate 410 is fixed to the outer side of the two base rods 49. A driving motor B411 is arranged on one side of the two side frames 47, and one end of the output shaft of the two driving motors B411 is respectively fixed between the two lower eccentric wheels 412.

[0043] It should be noted that the further design of the auxiliary mechanism 4 realizes the efficient promotion and transmission of the formed packaging bags by setting the side frames 47 and the components thereon on both sides of the frame plate 3. Each side frame 47 is equipped with a mounting plate 48, and two eccentric wheels 412 are movably connected inside the mounting plate 48. These eccentric wheels 412 are connected to the base rod 49 through bearings. A common push plate 410 is fixed to the outside of the base rod 49. The output shaft of the drive motor B411 is directly connected to the eccentric wheel 412. When the drive motor B411 is running, it drives the eccentric wheel 412 to rotate, and then the base rod 49 produces periodic reciprocating motion, thereby pushing the push plate 410 to move back and forth.

[0044] Among them, the perfusion unit 1 includes a perfusion pipe 11, a magnetic float 12, a pressure flange 13, a magnetic liquid level sensor 14, a PLC controller 15, a proportional valve 16, and a regulating valve 17; the magnetic float 12 and the pressure flange 13 are both movably connected to the outside of the perfusion pipe 11, and the perfusion unit 1 also includes a cylinder 18, one end of the output shaft of the cylinder 18 is fixed with a bracket, and the bracket is fixed to the perfusion pipe 11, one end of the perfusion pipe 11 is connected and fixed to the regulating valve 17 through a pipeline, the regulating valve 17 and the proportional valve 16 are connected and fixed through an air pressure pipe, and the PLC controller 15 and the proportional valve 16 and the magnetic liquid level sensor 14 are connected by electrical signals.

[0045] It should be noted that the perfusion unit 1 achieves highly precise control of the liquid perfusion process by integrating a variety of precision components, including the perfusion tube 11, the magnetic float 12, the pressure flange 13, the magnetic liquid level sensor 14, the PLC controller 15, the proportional valve 16 and the regulating valve 17. The magnetic float 12 and the pressure flange 13 are movably connected to the outside of the perfusion tube 11 to ensure the flexibility and sealing of the system; the cylinder 18 fixes the perfusion tube 11 through the bracket to provide stable support, and the regulating valve 17 is connected to the proportional valve 16 through a pneumatic tube to ensure precise control of the flow rate. The PLC controller 15 communicates with the proportional valve 16 and the magnetic liquid level sensor 14 in real time through electrical signals to achieve automatic liquid level monitoring and flow adjustment. This design not only improves the consistency and accuracy of the perfusion capacity, but also enhances the response speed and stability of the system, thereby significantly improving production efficiency and product quality.

[0046] Among them, the positioning sleeve rod 252 includes a limiting rod and a rod sleeve, one end of the rod sleeve is fixed to the sealing hot knife 253, one end of the limiting rod is fixed to the inner wall of the mounting seat 223 and is located in the spring 251, the limiting rod and the rod sleeve are slidingly connected, a movable opening is opened on the left side of the top seat 255, the push rod 41 is linearly slidably connected to the inside of the movable opening, and one end passes through the movable opening to the outside of the top seat 255, a cross frame is fixedly connected between the two frame plates 3, and one side of the cross frame is rotatably connected to a guide roller through an axle.

[0047] It should be noted that the design achieves efficient and precise operation through a sophisticated mechanical structure. The positioning sleeve rod 252 is composed of a limiting rod and a rod sleeve, which are slidably connected. One end of the rod sleeve is fixed to the sealing hot knife 253, and the limiting rod is fixed to the inner wall of the mounting seat 223 and placed inside the spring 251, ensuring that the sealing hot knife 253 can move smoothly and accurately during operation, thereby enhancing the consistency and quality of the sealing. The movable opening set on the left side of the top seat 255 allows the push rod 41 to slide linearly, so that it can smoothly penetrate to the outside of the top seat 255 to perform the pushing task, thereby improving the operational flexibility and efficiency. In addition, the guide roller is connected to the cross frame fixed between the two frame plates 3 through an axial rod rotation, further ensuring the stability and directional accuracy of the packaging material during the transmission process. The overall design not only improves the reliability and precision of the equipment, but also optimizes the operational smoothness and automation level of the production line. At the same time, the sealing hot knife 253 can complete precise sealing operations in a short time to ensure the sealing and integrity of each paper box. It belongs to the scope of the prior art and this application will not go into details.

[0048] The working principle of the above embodiment is:

[0049] Before filling, the aseptic paper packaging material is formed into a cylindrical paper tube, and then moves downward through two guide rollers. First, pressurized gas is injected into the pressurization port on the mounting seat 223, and then the gas enters the pressurization chamber to push the piston 254 to move, and pushes the sealing hot knife 253 to move, so that the sealing hot knife 253 seals the bottom end of the cylindrical paper tube. At this time, the cylinder 18 pushes the bracket to move, so that the filling tube 11 brings the magnetic float 12 and the pressure flange 13 into the paper tube. At the same time, the filling equipment fills the inside of the paper tube through the filling tube 11. During the filling process, the magnetic float 12 will move in the filling tube 11 according to the height of the liquid level. 1 is raised and lowered, and the pressure flange 13 is used to maintain the stability of the perfusion pipe 11. The magnetic level sensor 14 contains elements that can respond to changes in the magnetic field. When the magnetic float 12 moves up and down due to changes in the liquid level, the position of the magnet thereon also changes. According to the position of the activated sensor element, the current height of the float can be determined, and then the height of the liquid level can be known. The information will be converted into electrical signals and sent to the PLC controller 15 for processing. The PLC controller 15 reads these signals and compares them with preset values ​​to determine whether it is necessary to adjust the proportional valve 16 to enable the regulating valve 17 to control the perfusion flow, thereby ensuring that the liquid level remains within the set range.

[0050] After the filling is completed, the four driving motors A212 are in operation, and when the output shaft thereof rotates, the movable wheel B214 will rotate. Under the drive of the transmission belt 215, the movable wheel A213 and the movable wheel B214 will rotate with the transmission belt 215. The mounting frame 216 on the outside of the transmission belt 215 will move with the two driving rods A217 and the two driving rods B218. When the driving rod A217 moves downward, it will move with the sliding sleeve 24 on the outside of the positioning rod 23, and the mounting piece 221 will move downward. When the mounting piece 221 moves downward, the mounting seat 223 also moves downward at the same time. Since the sealing mechanism 25 is arranged on the mounting seat 223, the height of the sealing mechanism 25 can be adjusted. At the same time, the driving rod B218 moves downward, and in the downward process, it will move the base sheet 224 downward. Since the base sheets 224 on the left and right sides are respectively hinged to the two connecting frames 222 on the left and right mounting plates 221 through an axle rod, the connecting frame 222 will be pulled to rotate. At this time, the angle of the two mounting seats 223 at the same height will be adjusted through the half gear 225. After the angle changes, the driving motor A212 moves the driving rod A217 upward, further moving the mounting plate 221 and the mounting seat 223 upward. Due to the change in angle, the mounting seats 223 on the same vertical line do not contact each other when the height changes, so replacement can be achieved to divide the aseptic paper packaging material into multiple filling boxes.

[0051] During the process of pouring and sealing, there is a certain angle difference between the top seat 255 and the clamping jaws 256 due to the action of the tension spring. When the top seat 255 moves with the mounting seat 223, the pressure rod 257 on the clamping jaws 256 will contact the positioning track 258. Since the gap between the two adjacent positioning tracks 258 changes from large to small, the pressure rod 257 will lead the clamping jaws 256 from an inclined state to a vertical state. During the process of the angle change of the clamping jaws 256, the force on the cylindrical paper tube increases. When the clamping jaws 256 on both sides are in a vertical state, they fit each other, and the cylindrical paper tube is inside the clamping jaws 256 on both sides to shape it into a rectangular parallelepiped. When the clamping jaws 256 move downward with the mounting seat 223, the pressure rod 257 will move out of the positioning track 258. At this time, the pressure rod 257 does not apply pressure to the clamping jaws 256, and the tension spring will lead the clamping jaws 256 to rotate and continue to maintain the inclined state to facilitate subsequent molding work.

[0052] During the operation of the driving motor B411, its output rotation will drive the eccentric wheel 412 in the mounting plate 48 to rotate. During the rotation of the eccentric wheel 412, the base rod 49 on the upper side thereof will swing, and further the push plate 410 on the base rod 49 will swing. As the driving motor B411 rotates, the push plate 410 will keep swinging, and will contact the push rod 41 during its swinging process, so that the push rod 41 moves horizontally. During the horizontal movement of the push rod 41, the push frame 46 will move, and the push frame 46 will move horizontally with the lever 45 inside it. During its horizontal movement, the connecting piece 44 at its top will change its angle, and further the connecting piece 44 will rotate with the rotating rod 42, and the swing piece 43 on the outside of the rotating rod 42 will swing, and will contact the sealed box body during the swinging process, so that it has a tendency to move downward, so as to facilitate the movement of the box body after filling and molding.

[0053] In summary, with the cooperation of the driving mechanism 21, the shaping mechanism 22, the sealing mechanism 25, the auxiliary mechanism 4 and the filling unit 1, the rapid filling and sealing of milk can be achieved, which is beneficial to maintaining the capacity consistency of each package of product and effectively improving the production quality of the product.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-capacity continuous perfusion system, characterized in that: It comprises a filling unit (1) for filling milk, a forming unit (2) for shaping the packaging material after filling, and two frame plates (3); The molding unit (2) comprises two sets of driving mechanisms (21), and the two sets of driving mechanisms (21) are symmetrically distributed along the frame plate (3). The molding unit (2) further comprises two shaping mechanisms (22) and two positioning rods (23) arranged on the driving mechanisms (21) and used for shaping the packaging material. The outer sides of the two positioning rods (23) are both slidably connected to sliding sleeves (24). Each of the driving mechanisms (21) comprises two hangers (211) and two driving motors A (212); the interiors of the two hangers (211) are rotatably connected to movable wheels A (213) via shafts; one end of the output shafts of the two driving motors A (212) is fixed to movable wheels B (214); the outer sides of the movable wheels A (213) and movable wheels B (214) on the same vertical line are both connected to transmission belts (215); the outer sides of the two transmission belts (215) are fixed to mounting frames (216); the interiors of the two mounting frames (216) are respectively fixed to driving rods A (217) and driving rods B (218); and one end of the two driving rods A (217) is respectively fixed to two sliding sleeves (24); Each of the shaping mechanisms (22) comprises a mounting plate (221) fixed to one side opposite to the two sliding sleeves (24); the interior of each of the mounting plates (221) is rotatably connected to two connecting frames (222) via two shafts; a mounting seat (223) is fixed to one side of the connecting frame (222); a base plate (224) is fixed to the bottom end of each of the two driving rods B (218); the base plates (224) on the left and right sides are respectively hinged to the two connecting frames (222) on the mounting plates (221) on the left and right sides via shafts; one side of the two connecting frames (222) on each of the shaping mechanisms (22) is rotatably connected to a half gear (225) via a shaft, and the transmission is achieved through meshing of the half gear (225); The molding unit (2) further comprises a sealing mechanism (25) disposed on the mounting seat (223), the sealing mechanism (25) comprising a spring (251) fixed to an inner wall of one side of the mounting seat (223), a positioning sleeve rod (252) located inside the spring (251) fixed to an inner wall of one side of the mounting seat (223), a same sealing hot knife (253) fixed to one side of the spring (251) and the positioning sleeve rod (252), and two pistons ( 254), and one side of the piston (254) is fixed to the sealing hot knife (253), a top seat (255) is fixed to the upper surface of the mounting seat (223), the upper surface of the top seat (255) is rotatably connected to a clamping claw (256) via an axle rod, and the top seat (255) and the clamping claw (256) are elastically connected via a tension spring, both sides of the clamping claw (256) are rotatably connected to a pressure rod (257), and two positioning rails (258) are fixed to opposite sides of the two frame plates (3); The top seat (255) is provided with an auxiliary mechanism (4) for assisting in pushing the packaging bag after forming, the auxiliary mechanism (4) comprising a push rod (41) movably connected to the inside of the top seat (255) and capable of linear movement, the inside of the top seat (255) is rotatably connected to a rotating rod (42) having one end penetrating through and extending to the outside of the top seat (255) via a bearing, a swing plate (43) is fixed to the outside of the rotating rod (42), a connecting plate (44) is fixed to the outside of the rotating rod (42), a lower surface of the connecting plate (44) is rotatably connected to a lever (45) via a bearing, and a push frame (46) is fixed to one end of the push rod (41) and is in close contact with the lever (45); Two boost chambers are formed inside the mounting seat (223), the two pistons (254) on each mounting seat (223) are respectively located in the two boost chambers, and a boost port is provided on one side of the mounting seat (223), the boost port being in communication with the boost chamber.

2. A large-volume continuous perfusion system according to claim 1, characterized in that: The horizontal height of the sliding sleeve (24) on the right side is greater than the horizontal height of the sliding sleeve (24) on the left side, and the horizontal heights of the sliding sleeves (24) on the front and rear sides are equal.

3. A large-volume continuous perfusion system according to claim 1, characterized in that: The auxiliary mechanism (4) further comprises a side frame (47) arranged on both sides of the frame plate (3); a mounting plate (48) is arranged on one side of the side frame (47); two eccentric wheels (412) are movably connected inside the mounting plate (48); one side of the eccentric wheel (412) is rotatably connected to a base rod (49) via a bearing; the outer sides of the two base rods (49) are fixed with a same push plate (410); one side of the two side frames (47) are both provided with a drive motor B (411); one end of the output shaft of the two drive motors B (411) is respectively fixed between the two lower eccentric wheels (412).

4. A large-volume continuous perfusion system according to claim 1, characterized in that: The perfusion unit (1) comprises a perfusion pipe (11), a magnetic float (12), a pressure flange (13), a magnetic liquid level sensor (14), a PLC controller (15), a proportional valve (16), and a regulating valve (17); the magnetic float (12) and the pressure flange (13) are both movably sleeved on the outside of the perfusion pipe (11).

5. A large-volume continuous perfusion system according to claim 4, characterized in that: The filling unit (1) further comprises a cylinder (18), one end of the output shaft of the cylinder (18) being fixed with a bracket, the bracket being fixed to the filling pipe (11), one end of the filling pipe (11) being connected and fixed to a regulating valve (17) via a pipeline, the regulating valve (17) being connected and fixed to a proportional valve (16) via an air pressure pipe, and the PLC controller (15) being connected to the proportional valve (16) and the magnetic liquid level sensor (14) by means of electrical signals.

6. A large-volume continuous perfusion system according to claim 1, characterized in that: The positioning sleeve rod (252) comprises a limiting rod and a rod sleeve, one end of the rod sleeve is fixed to the sealing hot knife (253), one end of the limiting rod is fixed to the inner wall of the mounting seat (223) and is located in the spring (251), and the limiting rod and the rod sleeve are slidably connected.

7. A large-volume continuous perfusion system according to claim 1, characterized in that: A movable opening is provided on the left side of the top seat (255), the push rod (41) is linearly slidably connected to the inside of the movable opening, and one end thereof passes through the movable opening to the outside of the top seat (255), a cross frame is fixedly connected between the two frame plates (3), and one side of the cross frame is rotatably connected to a guide roller via a shaft.

Images