Large bag sterile filling equipment

Abstract

The utility model relates to large bag sterile filling equipment which comprises at least one group of conveying modules, a filling module is arranged above a single group of conveying modules, the filling module is supported by a rack, and the single group of conveying modules convey packaging bags to filling positions corresponding to the filling module. The sealing cover installed on the packaging bag is pulled out through the filling module, the liquid material is quantitatively filled into the packaging bag, and therefore filling of the packaging bag is achieved. By arranging the filling module, the packaging bag can be automatically subjected to cover pulling and cover mounting, the working efficiency is effectively improved, liquid materials in the packaging bag can be effectively prevented from being polluted, and the product quality and safety are improved; and 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 aseptic filling technology, and in particular to a large bag aseptic filling device. Background Technology

[0002] Food filling equipment is a type of equipment used for filling in a sterile environment. It is mainly used to fill sterilized beverage products into sterile containers in a sterile environment and then seal them to ensure that the products have a long shelf life without refrigeration.

[0003] In existing technology, the structure of filling equipment mainly includes a filling chamber, a filling head, and a steam sterilization system. The 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 equipment has the following problems:

[0004] (1) The manual capping 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 large-bag aseptic filling 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 equipment.

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

[0008] A large bag aseptic filling device includes at least one set of conveying modules. A filling module is arranged above each set of conveying modules. The filling module is supported by a frame. The single set of conveying modules conveys the packaging bag to the filling position of the corresponding filling module. The filling module removes the sealing cap installed on the packaging bag and quantitatively fills the packaging bag with liquid material, thereby realizing the filling of the packaging bag.

[0009] As a further improvement to the above technical solution:

[0010] A single filling module includes a filling chamber mechanism. The top of the filling chamber mechanism is connected to the output end of a lifting cylinder. The lifting cylinder drives the filling chamber mechanism to move in a straight line in the vertical direction, thereby moving the filling chamber mechanism to the filling position, and then allowing the opening of the packaging bag to extend into the filling chamber mechanism.

[0011] A first actuator and a second actuator are installed on one side wall of the filling chamber mechanism. The working end of the second actuator extends into the filling chamber mechanism to pull the sealing cap out of the bag opening or press the sealing cap into the bag opening. The working end of the first actuator extends into the filling chamber mechanism to quantitatively fill the opened bag with liquid material.

[0012] The structure of a single first actuator is as follows: it includes a filling hollow shaft, the end of which is provided with a filling port for liquid to flow out, a movable plate is fitted on the outer circumference of the filling hollow shaft, a propulsion cylinder assembly is fixed on the movable plate, the output end of the propulsion cylinder assembly is connected to the corresponding filling chamber mechanism, and the propulsion cylinder assembly drives the movable plate to make a linear movement toward or away from the filling chamber mechanism, thereby causing the filling port to be inserted into the opening of the packaging bag, or to be dislodged from the opening of the packaging bag;

[0013] The filling hollow shaft is internally and concentrically fitted with filling drive shafts, thereby forming a receiving cavity between the outer circumferential surface of the filling drive shaft and the inner wall surface of the filling hollow shaft. The receiving cavity is used to store liquid material. One end of the filling drive shaft extends to the outside of the filling hollow shaft and is connected to the filling cylinder assembly. At the same time, a material blocking seal ring is fitted to the other end of the filling drive shaft. The filling cylinder assembly drives the filling drive shaft to move axially linearly relative to the filling hollow shaft, thereby allowing the end of the filling drive shaft to insert into or leave the filling port.

[0014] When the end of the filling drive shaft is inserted into the filling port, the filling port is closed by the sealing ring; when the end of the filling drive shaft leaves the filling port, the filling port opens, allowing the liquid in the accommodating cavity to flow into the packaging bag through the filling port.

[0015] The filling cylinder assembly includes two filling cylinders connected in series. When both filling cylinders are extended, the end of the filling drive shaft is fully inserted into the filling port, thereby closing the filling port. When both filling cylinders are retracted, the filling port is in a fully open state, allowing the material in the receiving cavity to flow out at a large flow rate. When one filling cylinder is extended and the other filling cylinder is retracted, the filling port is in a semi-open state, allowing the material in the receiving cavity to flow out at a small flow rate.

[0016] The structure of a single second actuator is as follows: it includes a hollow shaft for opening the cover, a clamp is fitted on the outer circumference of the hollow shaft, the clamp is fitted with a spherical bearing through a locking pin, the spherical bearing is connected to the output end of a switching cylinder, the switching cylinder is fixed on a cylinder mounting plate, the cylinder mounting plate is mounted on the outer circumference of the hollow shaft for opening the cover, a tooling mounting plate is fixed at the end of the hollow shaft for opening the cover, an opening and closing tooling is fitted on the tooling mounting plate, an opening drive shaft is concentrically mounted inside the hollow shaft for opening the cover, one end of the opening drive shaft extends to the outside of the hollow shaft for opening the cover and is connected to the output end of the switching cylinder, and the other end of the opening drive shaft extends to the outside of the hollow shaft for opening the cover and is connected to the drive input end of the opening and closing tooling. When the switching cylinder extends or retracts, it drives the hollow shaft for opening the cover to rotate relative to the cylinder mounting plate through the clamp, thereby driving the opening and closing tooling to rotate through the tooling mounting plate, so that the working end of the opening and closing tooling is aligned with the opening of the packaging bag;

[0017] The swing cylinder drives the opening transmission shaft to rotate relative to the opening hollow shaft, thereby driving the opening and closing tooling to clamp or loosen the sealing cap of the packaging bag.

[0018] The first cylinder assembly is fixed on the cylinder mounting plate. The output end of the first cylinder assembly is connected to the second cylinder assembly. The output end of the second cylinder assembly is connected to the corresponding filling chamber mechanism. The second cylinder assembly extends or retracts, and drives the cap-opening hollow shaft to make axial linear movement through the cylinder mounting plate. Thus, the cap-opening hollow shaft drives the cap-closing fixture to make linear movement away from or towards the bag opening. Then, the cap-opening fixture pulls out the sealing cap, or puts the sealing cap into the bag opening.

[0019] The first cylinder assembly retracts, and the cylinder mounting plate drives the hollow shaft of the cover to make axial linear motion. In turn, the hollow shaft of the cover drives the cover opening and closing fixture to make linear motion close to the bag opening, and then the cover opening and closing fixture presses the sealing cover into the bag opening.

[0020] In a single second actuator, the structure of the cover opening and closing fixture is as follows: it includes a drive rod connected to the cover opening drive shaft, with rotating arms hinged at both ends of the drive rod, the end of a single rotating arm hinged to a clamping arm, and the end of a single clamping arm hinged to a fixture mounting plate via a connecting pin.

[0021] When the cover-opening drive shaft rotates, it drives the drive rod to rotate, which in turn drives the two clamping arms to rotate around the corresponding connecting pins, thereby clamping or releasing the corresponding sealing cover.

[0022] It also includes a cap-closing block, which presses the corresponding sealing cap into the bag opening when the first cylinder assembly extends.

[0023] In a single second actuator, a limiting rod for limiting the rotation angle of the two clamping arms is fitted on the tooling mounting plate.

[0024] The structure of a single filling chamber mechanism is as follows: it includes a mounting frame, on one side of which a filling chamber is installed. Steam is circulated inside the filling chamber to create a sterile environment. A filling hole is opened on the side wall of the filling chamber, and the opening of the packaging bag extends into the interior of the filling chamber through the filling hole.

[0025] In a single filling chamber mechanism, two first clamping mechanisms are fitted on the outer wall of the filling chamber. The two first clamping mechanisms are symmetrically arranged relative to the filling hole. The two first clamping mechanisms simultaneously clamp the two corners of the packaging bag, thereby initially limiting and fixing the packaging bag.

[0026] A second clamping mechanism is installed on the top wall of the filling cavity. The working end of the second clamping mechanism extends into the filling cavity and clamps the opening of the packaging bag, thereby performing secondary positioning and fixing of the packaging bag.

[0027] A single conveying module includes a conveying roller seat and a conveying container placed on top of the conveying roller seat, the conveying container being used to support the packaging bag.

[0028] The beneficial effects of this utility model are as follows:

[0029] This utility model has a compact and reasonable structure and is easy to operate. By setting a filling module, it can automatically remove and fill the packaging bags, effectively improving work efficiency and preventing the liquid inside the packaging bags from being contaminated, thus improving product quality and safety. It can also achieve precise quantitative filling, improve filling accuracy, and effectively ensure product specification consistency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0031] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0032] Figure 3 This is a schematic diagram of the filling module in this utility model.

[0033] Figure 4 This is a schematic diagram of the installation structure between the filling chamber mechanism and the two clamping mechanisms in this utility model.

[0034] Figure 5 This is a schematic diagram of the second clamping mechanism in this utility model.

[0035] Figure 6This is a schematic diagram of the structure of the first actuator in this utility model.

[0036] Figure 7 This is a full sectional view of the first actuator in this utility model.

[0037] Figure 8 This is a schematic diagram of the structure of the second actuator in this utility model.

[0038] Figure 9 for Figure 8 The right view.

[0039] Figure 10 This is a full sectional view of the second actuator in this utility model.

[0040] The components include: 1. First actuator; 2. Second actuator; 3. Filling chamber mechanism; 4. Lifting guide column; 5. Lifting cylinder; 6. Frame; 7. Conveying module; 8. First clamping mechanism; 9. Second clamping mechanism.

[0041] 101. Filling cylinder; 102. Propulsion cylinder assembly; 103. Guide post assembly; 104. Bearing housing assembly; 105. Filling drive shaft; 106. Filling hollow shaft; 107. Filling sleeve; 108. Receiving cavity; 109. Filling port; 110. Blocking seal ring; 111. Movable plate;

[0042] 201. First cylinder assembly; 202. Second cylinder assembly; 203. Cylinder mounting plate; 204. Cover opening sleeve; 205. Cover opening drive shaft; 206. Cover opening hollow shaft; 207. Swing cylinder; 208. Cover opening / closing fixture; 209. Switching cylinder; 210. Fixture mounting plate; 211. Spherical bearing; 212. Locking pin; 213. Clamp;

[0043] 2081. Drive rod; 2082. Rotating arm; 2083. Clamping arm; 2084. Limiting rod; 2085. Closing pressure block;

[0044] 301. Mounting bracket; 302. Filling chamber; 303. Filling hole;

[0045] 801. First clamping cylinder; 802. Movable support; 803. Fixed support; 804. First clamping plate; 805. Second clamping plate;

[0046] 901. Second clamping cylinder; 902. Clamping connector; 903. First connecting rod; 904. Second connecting rod; 905. Limiting plate. Detailed Implementation

[0047] The structure and function of this utility model are as follows:

[0048] like Figures 1-10As shown, a large-bag aseptic filling device includes at least one set of conveying modules 7. A filling module is arranged above each conveying module 7 and is supported by a frame 6. The conveying module 7 conveys the packaging bag to the filling position of the corresponding filling module. The filling module removes the sealing cap installed on the packaging bag and quantitatively fills the packaging bag with liquid, thereby realizing the filling of the packaging bag. By setting up a filling module, the packaging bag can be automatically capped and capped, effectively improving work efficiency and preventing the liquid inside the packaging bag from being contaminated, thus improving product quality and safety. It can also achieve precise quantitative filling, improve filling accuracy, and effectively ensure product specification consistency.

[0049] like Figures 1-2 As shown in the figure, in this utility model, one or two or more filling modules can be set on the frame 6. Different filling modules work independently to effectively improve filling efficiency. An electrical control cabinet is installed on the frame 6 to realize automatic control of the filling equipment.

[0050] In this invention, the packaging bag is an aseptic bag made from polyethylene granules. It possesses properties such as sterility, non-toxicity, excellent low-temperature resistance, good chemical stability, and electrical insulation, and is commonly used as an inner packaging bag in the food industry. The aseptic bag structure includes a bag body with an opening forming the bag opening. A sealing cap is installed inside the bag opening. The sealing cap can be a flat cap or other types of box caps, primarily used to seal the bag opening. In the initial state, there is approximately a 5mm gap between the sealing cap and the bag opening, facilitating subsequent opening using the cap-opening tool 208. When installing the cap, the gap between the sealing cap and the bag opening needs to be eliminated, and the sealing cap is fully pressed into the bag opening to achieve a seal.

[0051] The single conveying module 7 includes a conveying roller seat and a conveying container placed on top of the conveying roller seat. The conveying container is used to support the packaging. Since the aseptic bag is a flexible packaging bag, the conveying container supports the packaging bag, which facilitates the conveying.

[0052] like Figure 3As shown, a single filling module includes a filling chamber mechanism 3. The top of the filling chamber mechanism 3 is connected to the output end of a lifting cylinder 5. The lifting cylinder 5 drives the filling chamber mechanism 3 to move in a straight line in the vertical direction, thereby moving the filling chamber mechanism 3 to the filling position, so that the opening of the packaging bag extends into the filling chamber mechanism 3. A first actuator 1 and a second actuator 2 are installed on one side wall of the filling chamber mechanism 3. The working end of the second actuator 2 extends into the filling chamber mechanism 3, thereby pulling the sealing cap out of the opening of the packaging bag, or pressing the sealing cap into the opening of the packaging bag. The working end of the first actuator 1 extends into the filling chamber mechanism 3, thereby quantitatively filling the packaging bag after the cap is opened with liquid material. By setting up a lifting cylinder 5, the corresponding filling chamber mechanism 3 is driven to move vertically upwards or downwards in a linear motion, thereby aligning the filling hole 303 with the opening of the packaging bag. Specifically, when filling is required, the corresponding lifting cylinder 5 extends, driving the corresponding filling chamber mechanism 3 to descend vertically, thus aligning the filling hole 303 with the opening of the packaging bag. After filling is completed, the corresponding lifting cylinder 5 retracts, driving the corresponding filling chamber mechanism 3 to rise vertically, thus facilitating the conveying container to lift the packaging bag away from the unloading area. In addition, to improve the movement stability of the filling module, several lifting guide columns 4 are installed between the frame 6 and the filling module.

[0053] like Figure 4 As shown, the structure of a single filling chamber mechanism 3 includes a mounting frame 301. A filling chamber 302 is mounted on one side of the mounting frame 301. Steam is circulated inside the filling chamber 302 to create a sterile environment. A filling hole 303 is opened on the side wall of the filling chamber 302, through which the opening of the packaging bag extends into the interior of the filling chamber 302. Observation windows are opened on opposite side walls of the filling chamber 302, each with transparent glass to facilitate observation of the internal components by the operator. In addition, a sensor assembly is installed inside the filling chamber 302. The detection end of the sensor assembly extends into the filling chamber 302 to detect whether a sealing cap is installed on the bag opening, thereby realizing automatic cap opening and closing.

[0054] like Figures 3-4As shown, in a single filling chamber mechanism 3, two first clamping mechanisms 8 are installed on the outer wall of the filling chamber 302. The two first clamping mechanisms 8 are symmetrically arranged relative to the filling hole 303. The two first clamping mechanisms 8 simultaneously clamp the two corners of the packaging bag, thereby initially limiting and fixing the packaging bag. A second clamping mechanism 9 is installed on the top wall of the filling chamber 302. The working end of the second clamping mechanism 9 extends into the filling chamber 302 and clamps the opening of the packaging bag, thereby providing secondary limiting and fixing of the packaging bag. Because the aseptic bag has a large capacity and is made of soft material, by setting the first clamping mechanism 8 and the second clamping mechanism 9, the packaging bag can be clamped during filling, thereby improving the working stability of the filling equipment.

[0055] like Figure 3 As shown, the structure of a single first clamping mechanism 8 is as follows: it includes a first clamping cylinder 801 fixed on the end face of the corresponding filling cavity 302. The output end of the first clamping cylinder 801 is hinged to a movable support 802. The movable support 802 is also hinged to a fixed support 803 fixed on the corresponding filling cavity 302. A first clamping plate 804 is provided on the movable support 802, and a second clamping plate 805 corresponding to the first clamping plate 804 is provided on the fixed support 803. The first clamping cylinder 801 extends or retracts, driving the movable support 802 to rotate relative to the fixed support 803, thereby causing the first clamping plate 804 to adhere to or move away from the second clamping plate 805, thereby clamping or releasing the bag body of the corresponding packaging bag.

[0056] like Figure 4As shown, the structure of a single second clamping mechanism 9 is as follows: it includes a second clamping cylinder 901 fixed to the top of the corresponding filling cavity 302. The output end of the second clamping cylinder 901 extends through the top end face of the filling cavity 302 into the interior of the corresponding filling cavity 302, thereby connecting with a clamping connector 902 fixed to the inner wall of the corresponding filling cavity 302. First connecting rods 903 are hinged to both ends of the clamping connector 902. The end of a single first connecting rod 903 is hinged to the first section of a second connecting rod 904, and the middle section of a single second connecting rod 904 is hinged to the side wall of the corresponding filling cavity 302. The second clamping cylinder 901 extends or retracts, via two second clamping cylinders 901... A first connecting rod 903 drives the corresponding second connecting rod 904 to rotate simultaneously, causing the tail sections of the two second connecting rods 904 to move apart or closer together. This allows the two second connecting rods 904 to release or clamp the bag opening of the corresponding packaging bag within the filling cavity 302. The system also includes two limiting plates 905 fixed to the inner wall of the corresponding filling cavity 302. Each limiting plate 905 has a limiting groove, which corresponds one-to-one with each of the second connecting rods 904. When the two second connecting rods 904 open and close, the tail sections of the two second connecting rods 904 slide within their respective limiting grooves, effectively improving the movement stability of the second connecting rods 904. The second clamping mechanism 9 is used to clamp and limit the bag opening, thereby preventing the bag opening from shaking during the filling equipment's operation and further improving the working stability of the filling equipment.

[0057] like Figures 6-7As shown, the structure of a single first actuator 1 is as follows: it includes a filling hollow shaft 106, with a filling port 109 for liquid outflow at one end of the filling hollow shaft 106. A movable plate 111 is fitted onto the outer circumferential surface of the filling hollow shaft 106, and a propulsion cylinder assembly 102 is fixed on the movable plate 111. The output end of the propulsion cylinder assembly 102 is connected to the corresponding filling chamber mechanism 3. The propulsion cylinder assembly 102 drives the movable plate 111 to make linear movements toward or away from the filling chamber mechanism 3, thereby causing the filling port 109 to be inserted into the opening of the packaging bag, or to be dislodged from the opening of the packaging bag. A filling drive shaft 105 is concentrically installed inside the filling hollow shaft 106 at intervals, so that the outer circumferential surface of the filling drive shaft 105 and the inner wall surface of the filling hollow shaft 106 are aligned. A receiving cavity 108 is formed between the two, which is used to store liquid. One end of the filling drive shaft 105 extends to the outside of the filling hollow shaft 106 and is connected to the filling cylinder assembly. At the same time, a sealing ring 110 is installed on the other end of the filling drive shaft 105. The filling cylinder assembly drives the filling drive shaft 105 to move axially linearly relative to the filling hollow shaft 106, so that the end of the filling drive shaft 105 is inserted into or removed from the filling port 109. When the end of the filling drive shaft 105 is inserted into the filling port 109, the sealing ring 110 closes the filling port 109. When the end of the filling drive shaft 105 is removed from the filling port 109, the filling port 109 opens, so that the liquid in the receiving cavity 108 flows into the packaging bag through the filling port 109. By setting the first actuator 1, which controls the stroke of the filling cylinder assembly based on time parameters, high-precision filling can be achieved.

[0058] The filling cylinder assembly includes two filling cylinders 101 connected in series. When both filling cylinders 101 are extended, the end of the filling drive shaft 105 is fully inserted into the filling port 109, thereby closing the filling port 109. When both filling cylinders 101 are retracted, the filling port 109 is in a fully open state, thereby allowing the material in the receiving cavity 108 to flow out at a large flow rate. When one filling cylinder 101 is extended and the other filling cylinder 101 is retracted, the filling port 109 is in a semi-open state, thereby allowing the material in the receiving cavity 108 to flow out at a small flow rate. In this utility model, the first actuator 1 has a large flow filling mode and a small flow filling mode. In the large flow filling mode, both filling cylinders 101 are retracted. In the small flow filling mode, one filling cylinder 101 is extended and the other filling cylinder 101 is retracted. When both filling cylinders 101 are extended, the filling port 109 is blocked by the blocking sealing ring 110 and the filling drive shaft 105 and is in a closed state.

[0059] A filling sleeve 107 is concentrically mounted on the outside of the filling hollow shaft 106. The filling sleeve 107 is fixed to the outer wall of the corresponding filling cavity 302, thereby supporting the filling hollow shaft 106 arranged in the horizontal direction. The filling sleeve 107 and the filling hollow shaft 106 are sealed together by a sealing ring assembly, thereby ensuring that the sterile environment inside the filling cavity 302 is not contaminated when the filling equipment is working.

[0060] In addition, to further improve the working stability of the first actuator 1, a guide post assembly 103 is fixed on the movable plate 111. The guide post assembly 103 is installed in conjunction with the bearing seat assembly 104. The bearing seat assembly 104 is fixed on the mounting bracket 301. When the movable plate 111 moves in a straight line in the horizontal direction, the guide post assembly 103 slides relative to the bearing seat assembly 104.

[0061] like Figures 8-10As shown, the structure of a single second actuator 2 is as follows: it includes a hollow shaft 206 for opening the cover, a clamp 213 is fitted on the outer circumference of the hollow shaft 206, the clamp 213 is fitted with a spherical bearing 211 through a locking pin 212, the spherical bearing 211 is connected to the output end of a switching cylinder 209, the switching cylinder 209 is fixed on a cylinder mounting plate 203, the cylinder mounting plate 203 is mounted on the outer circumference of the hollow shaft 206 for opening the cover, and a tooling mounting plate 210 is fixed to the end of the hollow shaft 206 for opening the cover, and an opening mechanism is fitted on the tooling mounting plate 210. The lid-closing fixture 208 has a lid-opening drive shaft 205 concentrically mounted inside the lid-opening hollow shaft 206. One end of the lid-opening drive shaft 205 extends outside the lid-opening hollow shaft 206 and connects to the output end of the switching cylinder 209. Simultaneously, the other end of the lid-opening drive shaft 205 extends outside the lid-opening hollow shaft 206 and connects to the drive input end of the lid-closing fixture 208. When the switching cylinder 209 extends or retracts, it drives the lid-opening hollow shaft 206 to rotate relative to the cylinder mounting plate 203 via the clamp 213, thereby driving the lid-closing fixture 208 via the fixture mounting plate 210. 208 rotates, thereby aligning the working end of the opening / closing fixture 208 with the opening of the packaging bag; the swing cylinder 207 drives the opening drive shaft 205 to rotate relative to the opening hollow shaft 206, thereby driving the opening / closing fixture 208 to clamp or release the sealing cap of the packaging bag; the first cylinder assembly 201 is fixed on the cylinder mounting plate 203, the output end of the first cylinder assembly 201 is connected to the second cylinder assembly 202, the output end of the second cylinder assembly 202 is connected to the corresponding filling chamber mechanism 3, the second cylinder assembly 202 extends or retracts, driven by the cylinder mounting plate 203 The hollow shaft 206 moves axially in a linear motion, which in turn drives the opening and closing fixture 208 to move linearly away from or towards the bag opening. This allows the fixture to either pull out the sealing cap or place it into the bag opening. The first cylinder assembly 201 retracts, and the cylinder mounting plate 203 drives the hollow shaft 206 to move axially in a linear motion. This, in turn, drives the opening and closing fixture 208 to move linearly towards the bag opening, pressing the sealing cap into the bag opening. By using the first cylinder assembly 201, after the second cylinder assembly 202 drives the opening and closing fixture 208 to place the sealing cap into the corresponding bag opening (at which point there is still a gap of approximately 5mm between the sealing cap and the bag opening), the sealing performance of the packaging bag is ensured.

[0062] In a single second actuator 2, an opening sleeve 204 is fitted on the outer circumferential surface of the opening hollow shaft 206. The opening sleeve 204 is fixed to the outer wall of the corresponding filling cavity 302. A sealing ring assembly is fitted between the inner wall of the opening sleeve 204 and the outer circumferential surface of the opening hollow shaft 206 to ensure the sealing of the filling cavity 302.

[0063] like Figure 9 As shown, in a single second actuator 2, the structure of the cap-opening / closing fixture 208 is as follows: it includes a drive rod 2081 connected to the cap-opening drive shaft 205, with rotating arms 2082 hinged to both ends of the drive rod 2081. The end of each rotating arm 2082 is hinged to a clamping arm 2083, and the end of each clamping arm 2083 is hinged to the fixture mounting plate 210 via a connecting pin. When the cap-opening drive shaft 205 rotates, it drives the drive rod 2081 to rotate, which in turn drives the two clamping arms 2083 to rotate around their corresponding connecting pins, thereby clamping or releasing the corresponding sealing caps. It also includes a cap-closing pressure block 2085. When the first cylinder assembly 201 extends, the cap-closing pressure block 2085 presses the corresponding sealing cap into the bag opening. By setting the cap-opening / closing fixture 208, the packaging bag can be automatically opened and closed within the filling chamber 302, thereby achieving automated production, effectively improving the working efficiency of the filling equipment, and reducing labor costs.

[0064] In the single second actuator 2, a limiting rod 2084 is fitted on the tooling mounting plate 210 to limit the rotation angle of the two clamping arms 2083. The limiting rod 2084 is used to limit the opening angle of the two clamping arms 2083 to avoid the problem of the two clamping arms 2083 being unable to reset due to an excessive opening angle.

[0065] The working process of this utility model is as follows:

[0066] Before filling a batch of materials, the inside of the filling chamber 302 is first sterilized. After sterilization, an appropriate amount of steam is introduced into the filling chamber 302 to keep the inside of the filling chamber 302 within a suitable temperature range and maintain an appropriate positive pressure. At this time, the inside of the chamber is in a sterile state.

[0067] During filling, a packaging bag is conveyed to the position by the corresponding conveying module 7, and then the corresponding lifting cylinder 5 drives the filling module to move vertically to the filling position. Following the method of filling with a large flow rate first and then filling with a small flow rate, the corresponding filling module fills the packaging bag until the set weight of material is filled into the packaging bag. During the filling process, steam is continuously introduced into the filling module to maintain a sterile environment inside the corresponding filling module.

[0068] After a batch of packaging bags is filled, the steam supply is stopped. Then, by installing a connecting pipe in the filling hole 303, the cleaning fluid can enter the filling chamber 302 through the receiving chamber 108 and circulate, thereby cleaning the filling module.

[0069] 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 bag-in-box aseptic filling apparatus characterized by: The filling device comprises at least one set of conveying modules (7), a filling module is arranged above each set of conveying modules (7), and the filling module is supported by a rack (6). Each set of conveying modules (7) conveys a packaging bag to a filling position of the corresponding filling module, and the filling module pulls out a sealing cover installed on the packaging bag and quantitatively fills liquid into the packaging bag, so as to realize filling of the packaging bag.

2. A form, fill and seal apparatus for a flexible bag as defined in claim 1, wherein: Each set of filling modules comprises a filling chamber mechanism (3), a top of the filling chamber mechanism (3) is connected with an output end of a lifting cylinder (5), the lifting cylinder (5) drives the filling chamber mechanism (3) to move linearly in a vertical direction, so that the filling chamber mechanism (3) moves to the filling position, and then the bag opening of the packaging bag extends into the filling chamber mechanism (3); A side wall surface of the filling chamber mechanism (3) is fitted with a first actuating mechanism (1) and a second actuating mechanism (2), a working end of the second actuating mechanism (2) extends into the filling chamber mechanism (3), so as to pull out the sealing cover from the bag opening of the packaging bag or press the sealing cover into the bag opening of the packaging bag, and a working end of the first actuating mechanism (1) extends into the filling chamber mechanism (3), so as to quantitatively fill liquid into the packaging bag after the cover is opened.

3. A form, fill, and seal apparatus for a flexible bag as defined in claim 2, wherein: The structure of each first actuating mechanism (1) comprises a filling hollow shaft (106), an end of the filling hollow shaft (106) is provided with a filling port (109) for liquid outflow, an outer circumferential surface of the filling hollow shaft (106) is fitted with a movable plate (111), the movable plate (111) is fixed with a pushing cylinder assembly (102), an output end of the pushing cylinder assembly (102) is connected with a corresponding filling chamber mechanism (3), the pushing cylinder assembly (102) drives the movable plate (111) to move linearly close to or away from the filling chamber mechanism (3), so that the filling port (109) is inserted into the bag opening of the packaging bag or is separated from the bag opening of the packaging bag. An inner part of the filling hollow shaft (106) is fitted with a filling transmission shaft (105) in a spaced and concentric manner, so that a containing cavity (108) is formed between an outer circumferential surface of the filling transmission shaft (105) and an inner side wall surface of the filling hollow shaft (106), the containing cavity (108) is used for storing liquid, one end of the filling transmission shaft (105) extends to an outside of the filling hollow shaft (106) and is connected with a filling cylinder assembly, meanwhile, the other end of the filling transmission shaft (105) is fitted with a material blocking sealing ring (110), the filling cylinder assembly drives the filling transmission shaft (105) to move linearly in an axial direction relative to the filling hollow shaft (106), so that the end of the filling transmission shaft (105) is inserted into or separated from the filling port (109). When the end of the filling transmission shaft (105) is inserted into the filling port (109), the filling port (109) is closed through the material blocking sealing ring (110); when the end of the filling transmission shaft (105) is separated from the filling port (109), the filling port (109) is opened, so that the liquid in the containing cavity (108) flows into the packaging bag through the filling port (109).

4. A form, fill, and seal apparatus for a flexible bag as defined in claim 3, wherein: The filling cylinder assembly comprises two serial filling cylinders (101), when both of the filling cylinders (101) are extended, the end of the filling transmission shaft (105) is fully inserted into the filling port (109), so that the filling port (109) is closed; when both of the filling cylinders (101) are retracted, the filling port (109) is in a fully open state, so that the material in the accommodating cavity (108) flows out at a large flow rate; when one filling cylinder (101) is extended and the other filling cylinder (101) is retracted, the filling port (109) is in a semi-open state, so that the material in the accommodating cavity (108) flows out at a small flow rate.

5. A bulk bag aseptic filling apparatus as claimed in claim 1, characterized in that: The structure of the single second actuating mechanism (2) is as follows: a cover opening hollow shaft (206) is provided, a clamping hoop (213) is mounted on the outer circumferential surface of the cover opening hollow shaft (206) in a matched mode, the clamping hoop (213) is mounted on a spherical plain bearing (211) through a lock pin (212), the spherical plain bearing (211) is connected with the output end of a switching cylinder (209), the switching cylinder (209) is fixed on a cylinder mounting plate (203), the cylinder mounting plate (203) is mounted on the outer circumferential surface of the cover opening hollow shaft (206), the end of the cover opening hollow shaft (206) is fixed with a tool mounting plate (210), an opening and closing cover tool (208) is mounted on the tool mounting plate (210) in a matched mode, the cover opening hollow shaft (206) is concentrically provided with a cover opening transmission shaft (205) in the inside, one end of the cover opening transmission shaft (205) extends to the outside of the cover opening hollow shaft (206) and is connected with the output end of the switching cylinder (209), meanwhile, the other end of the cover opening transmission shaft (205) extends to the outside of the cover opening hollow shaft (206) and is connected with the driving input end of the opening and closing cover tool (208), the switching cylinder (209) is extended or retracted, the cover opening hollow shaft (206) is rotated relative to the cylinder mounting plate (203) through the clamping hoop (213), so that the opening and closing cover tool (208) is rotated through the tool mounting plate (210), and then the working end of the opening and closing cover tool (208) is aligned with the bag opening of the packaging bag; Further comprising a swing cylinder (207), the swing cylinder (207) drives the cover opening transmission shaft (205) to rotate relative to the cover opening hollow shaft (206), so as to drive the opening and closing cover tool (208) to clamp or release the sealing cover of the packaging bag; The cylinder mounting plate (203) is fixed with a first cylinder assembly (201), the output end of the first cylinder assembly (201) is connected with a second cylinder assembly (202), the output end of the second cylinder assembly (202) is connected with a corresponding filling chamber mechanism (3), the second cylinder assembly (202) is extended or retracted, the cover opening hollow shaft (206) is driven by the cylinder mounting plate (203) to move linearly in an axial direction, so that the opening and closing cover tool (208) is driven by the cover opening hollow shaft (206) to move linearly away from or close to the bag opening of the packaging bag, and then the sealing cover is pulled out by the opening and closing cover tool (208), or the sealing cover is put into the bag opening; The first cylinder assembly (201) retracts, drives the cover opening hollow shaft (206) to make axial linear motion through the cylinder mounting plate (203), so as to drive the cover opening and closing tool (208) to make linear motion close to the bag opening through the cover opening hollow shaft (206), and then press the sealing cover into the bag opening through the cover opening and closing tool (208).

6. A form, fill, and seal apparatus for a flexible bag as defined in claim 5, wherein: In the single second actuating mechanism (2), the cover opening and closing tool (208) comprises a driving rod (2081) connected with the cover opening transmission shaft (205), both ends of the driving rod (2081) are respectively hinged with a rotating arm (2082), the end of the single rotating arm (2082) is hinged with a clamping arm (2083), and the end of the single clamping arm (2083) is hinged with the tool mounting plate (210) through a connecting pin. When the cover opening transmission shaft (205) rotates, the driving rod (2081) is driven to rotate, and the two clamping arms (2083) are respectively driven to rotate around the corresponding connecting pins through the two rotating arms (2082), so as to clamp or release the corresponding sealing cover. The first cylinder assembly (201) extends, and the corresponding sealing cover is pressed into the bag opening through the cover closing pressing block (2085).

7. A form, fill, and seal apparatus as defined in claim 6, wherein: In the single second actuating mechanism (2), the tool mounting plate (210) is cooperatively installed with a limiting rod (2084) for limiting the rotation angle of the two clamping arms (2083).

8. A form, fill, and seal apparatus as defined in claim 1, wherein: The single filling chamber mechanism (3) comprises a mounting frame (301), one side of the mounting frame (301) is cooperatively installed with a filling cavity (302), steam passes through the filling cavity (302), so that a sterile environment is formed in the filling cavity (302), a filling hole (303) is formed in the side wall surface of the filling cavity (302), and the bag opening of the packaging bag extends into the inside of the filling cavity (302) through the filling hole (303).

9. A form, fill, and seal apparatus as defined in claim 8, wherein: In the single filling chamber mechanism (3), two first clamping mechanisms (8) are cooperatively installed on the outer wall surface of the filling cavity (302), the two first clamping mechanisms (8) are symmetrically arranged relative to the filling hole (303), and the two first clamping mechanisms (8) clamp the two bag corners of the packaging bag at the same time, so as to preliminarily limit and fix the packaging bag. The second clamping mechanism (9) is cooperatively installed on the top wall surface of the filling cavity (302), the working end of the second clamping mechanism (9) extends into the inside of the filling cavity (302) and clamps the bag opening of the packaging bag, so as to secondarily limit and fix the packaging bag.

10. A form, fill, and seal apparatus as defined in claim 1, wherein: The single set of conveying modules (7) comprises a conveying roller seat and a conveying container placed on the top of the conveying roller seat, and the conveying container is used for supporting the packaging bag.

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