An automatic flipping and sorting system for infusion bags

Abstract

The present invention provides an automatic flipping and sorting system for infusion bags, which includes a first conveyor line, a second conveyor line, an online re-inspection scale, a third conveyor line, a flattening device, a rejecting device, a first receiving hopper, a visual device, an industrial light source, a robot, a rack, a clamp, a suction cup, an encoder, a fourth conveyor line, a fifth conveyor line and a second receiving hopper; the visual device in the technical solution provided by the present invention realizes the intelligent sorting of infusion bags, reduces the sorting errors in the sorting work of infusion bags, and also reduces the workload of manual sorting, thereby improving work efficiency. The online re-inspection scale is set to realize the weighing and re-inspection of the infusion bag, and the suction cup is controlled by a vacuum generator. The exhaust gas generated by the vacuum generator is discharged to the outside through an air receiving device and an exhaust pipe, thereby realizing the purification of the exhaust gas.

Description

Technical Field

[0001] The present invention relates to the technical field of medicine sorting and packaging, and in particular to an automatic turning and sorting system for infusion bags. Background Art

[0002] At present, intravenous infusion is a major treatment method in hospitals, with a usage rate of up to 90% in my country. Hospitals have to perform a large number of intravenous infusion operations every day, especially in the inpatient department, and the amount of infusion bags is very large. The infusion bags contain basic liquids such as glucose and saline. After being produced by the filling machine, they are overlapped and placed in a disorderly manner. The system process requires that the infusion bags be turned over, weighed and re-inspected, and the front and back bags are identified, and then placed in a certain order and direction in the subsequent vacuum packaging tank for vacuum packaging.

[0003] Currently, most pharmaceutical manufacturers manually weigh the infusion bags and place them into subsequent packaging slots in a certain order and direction, and then sell the finished products after heat sealing. Manual operation has the disadvantages of low efficiency, high labor intensity and high error rate. As the labor cost in the domestic labor market gradually increases, companies are faced with the severe issue of reducing labor costs and improving operating efficiency.

[0004] The invention patent with application number 201310105167.X discloses an automatic sorting machine for bagged medicines, which consists of a frame, a sorting mechanism, a transmission shaft, a coupling, a stepper motor, a belt conveyor and a corresponding electrical control system. The transmission shaft and the brake shaft are horizontally mounted at the top and bottom of the frame respectively, and a stepper motor is mounted on the frame near one end of the transmission shaft. The sorting mechanism is mounted between the upper transmission shaft and the lower brake shaft on both sides of the frame, and the belt conveyor is mounted in the frame at an appropriate position between the sorting mechanisms on both sides. The electrical control system is mounted in a dedicated control cabinet, which uses a pair of electromagnetic clutches with opposite characteristics and a specially constructed chain plate elevator to realize the sorting function of bagged medicines. Although this structure is adapted to the irregular shape of bagged medicines and soft packaging, and is not easy to cause damage to the packaging bags, its sorting efficiency is low, the speed is slow, and it is not suitable for large-scale secondary vacuum packaging of infusion bags.

[0005] The invention patent with application number 201510665775.5 discloses a bag sorting system, which mainly includes a conveyor belt, a bag sorting conveyor line, a feeding conveyor line, a sorting device and a box feeding conveyor line; the bag sorting conveyor line of the bag sorting system of the present invention is composed of a plurality of independently operated guide roller transmission parts, each guide roller group is driven by an independently operated driving motor, and each guide roller transmission part is equipped with a plurality of detection devices for detecting the amount of bagged products on the guide rail transmission part. By detecting the overlapping intervals of bagged products on the guide rail transmission part, the guide rollers of each roller transmission part can be operated at different speeds, and the overlapping bagged products are separated by differential speed to achieve the separation of each bag of bagged products. Although the technical problem of disorderly and overlapping bagged products in the prior art is solved, and preparation is made for robot sorting hands, the invention does not have a flipping process, a weighing and re-inspection process and a visual inspection process, the sorting speed is slow, and its practicality needs further study.

[0006] In recent years, with the development of robots and machine vision technology, it has played an increasingly important role in industrial production, mainly due to its precision processing and manufacturing, easy to achieve accurate positioning, high-speed and flexible movement, etc., and has gradually become a development trend in the packaging industry. Summary of the invention

[0007] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides an automatic flipping and sorting system for infusion bags, which realizes intelligent sorting of infusion bags, reduces sorting errors in the sorting work of infusion bags, reduces the workload of manual sorting, and improves work efficiency.

[0008] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:

[0009] The present invention provides an automatic flipping and sorting system for infusion bags, the system comprising a first conveyor line, a second conveyor line, an online re-inspection scale, a third conveyor line, a flattening device, a rejecting device, a first receiving hopper, a visual device, an industrial light source, a robot, a frame, a clamp, a suction cup, an encoder, a fourth conveyor line, a fifth conveyor line, and a second receiving hopper;

[0010] The first conveyor line, the second conveyor line, the third conveyor line, the fourth conveyor line and the fifth conveyor line are arranged in sequence, and the fourth conveyor line is a curved conveyor line, so that the conveying directions of the first conveyor line, the second conveyor line and the third conveyor line are perpendicular to the conveying direction of the fifth conveyor line; the online re-inspection scale is located between the second conveyor line and the third conveyor line, a rejection device is installed on one side of the third conveyor line close to the online re-inspection scale, and a flattening device is installed on the other side, and the first material receiving hopper is located below the rejection device; the fifth conveyor line passes through the frame, the encoder and the visual device are respectively fixed at the head and end of the fifth conveyor line, and the second material receiving hopper is located below the head end of the fifth conveyor line; the industrial light source and the robot are both fixed on the frame, and the suction cup is installed below the robot through a clamp.

[0011] The first conveyor line, the second conveyor line, the third conveyor line, the fourth conveyor line and the fifth conveyor line all include a motor, a frequency converter, supporting legs, a side plate, a bracket and a conveyor belt.

[0012] The first conveyor line is intermittently operated. When the infusion bag is placed after filling, the first conveyor line stops and starts after placement. The conveying speed of the conveyor belt is controlled by a frequency converter so that the first conveyor line conveys the infusion bag to one station from the start to the completion of placement.

[0013] The conveyor belt of the first conveyor line is a hollow structure, and the first conveyor line is provided with a receiving tray, a discharge port and a valve for centrally collecting the filling leakage to the receiving tray.

[0014] The second conveyor line includes an inclined conveyor belt close to the first conveyor line and a horizontal conveyor belt close to the online re-inspection scale;

[0015] The end of the slope conveyor belt is 200 mm to 400 mm lower than the first conveyor line and is height-adjustable, so that the infusion bag on the first conveyor line can be turned 180 degrees by utilizing the height difference between the end of the slope conveyor belt and the first conveyor line and the slope of the slope conveyor belt;

[0016] The height of the horizontal conveyor belt is consistent with the online re-inspection scale to facilitate the transportation of the infusion bag;

[0017] The frequency converter of the second conveyor line controls the conveying speed of the slope conveyor belt and the horizontal conveyor belt, and the adjacent infusion bags are pulled apart by the cooperation between the second conveyor line and the first conveyor line.

[0018] The online re-inspection scale weighs the infusion bags that pass through the second conveying line in sequence and are spaced apart online, and adjusts the conveying speed of the online re-inspection scale through a weighing controller so that there is always only one infusion bag on the online re-inspection scale.

[0019] The rejecting device includes a cylinder, a rejector and a guide device; under the cooperation of the cylinder and the guide device, the rejector rejects the underweight or overweight infusion bag to the first receiving hopper without affecting the delivery of the next infusion bag;

[0020] The flattening device comprises a bracket and a roller mounted on the bracket;

[0021] The infusion bag passes through the gap between the roller and the conveyor belt under the conveyance of the third conveyor line, so as to flatten the deformed infusion bag;

[0022] The distance between the roller and the conveyor belt is adjustable to accommodate infusion bags of different specifications.

[0023] The fifth conveyor line is at 90 degrees to the direction in which the packaging machine conveys the infusion bags. It adopts a hollow structure and is higher than the packaging machine, so it does not affect the movement of the packaging machine.

[0024] The visual device is used to detect the position and front and back information of the infusion bag, and is located directly above the infusion bag transported on the fifth conveyor line to ensure that the infusion bag is within its field of view;

[0025] The visual device includes a lens, the pixel of the lens is at least 1.3 million, the focal length is 6mm-10mm, and the installation height is 500mm-600mm;

[0026] Preferably, the encoder is used to detect the real-time movement distance of the fifth conveyor line, and its resolution matches the speed and diameter of the motor shaft in the fifth conveyor line, and an incremental PNP rotary encoder is used.

[0027] The front end of the infusion bag is provided with a large end of the infusion bag and a small end of the infusion bag, and the visual device identifies the features of the large end of the infusion bag and the small end of the infusion bag to identify the front and back information;

[0028] The second receiving hopper is used to collect the infusion bags that have not been successfully turned over 180 degrees and are identified by the visual device.

[0029] Compared with the closest prior art, the technical solution provided by the present invention has the following beneficial effects:

[0030] The automatic flipping and sorting system for infusion bags provided by the present invention realizes intelligent sorting of infusion bags by setting a visual device, thereby reducing sorting errors in the sorting work of infusion bags, reducing the workload of manual sorting, and improving work efficiency;

[0031] The automatic flipping and sorting system for infusion bags provided by the present invention is provided with a second conveying line including a slope conveying belt close to the first conveying line and a horizontal conveying belt close to the online re-inspection scale, so that the infusion bags on the first conveying line can be flipped 180 degrees by utilizing the height difference between the end of the slope conveying belt and the first conveying line and the slope of the slope conveying belt;

[0032] The automatic flipping and sorting system for infusion bags provided by the present invention is provided with an online re-inspection scale to realize the weighing and re-inspection of the infusion bags, and the height of the horizontal conveyor belt in the second conveyor line is kept consistent with the online re-inspection scale to facilitate the conveyance of the infusion bags;

[0033] The automatic flipping and sorting system for infusion bags provided by the present invention is provided with a frame and a robot arranged on the upper part of the frame, and a suction cup is installed under the robot through a clamp to suck the infusion belt conveyed on the fifth conveyor line to the bag placing slot of the packaging machine to realize the positioning and grabbing of the infusion bag;

[0034] The automatic flipping and sorting system for infusion bags provided by the present invention is provided with a suction cup, which is controlled by a vacuum generator. The waste gas generated by the vacuum generator is discharged to the outside through an air receiving device and an exhaust pipe, thereby achieving purification of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a lateral view of the automatic flipping and sorting system for infusion bags in an embodiment of the present invention;

[0036] Figure 2 1 is a top view of the automatic flipping and sorting system for infusion bags in an embodiment of the present invention;

[0037] Figure 3 is a schematic diagram of an infusion bag in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of stacking infusion bags in an embodiment of the present invention;

[0039] Figure 5 This is a working diagram of the automatic flipping and sorting system for infusion bags in an embodiment of the present invention;

[0040] Figure 6 is a schematic diagram of the air path of the suction cup in an embodiment of the present invention;

[0041] In the figure, 1, filling machine, 2, first conveyor line, 3, second conveyor line, 4, online re-inspection scale, 5, third conveyor line, 6, flattening device, 7, visual device, 8, industrial light source, 9, robot, 10, rack, 11, suction cup, 12, fifth conveyor line, 13, rejection device, 14, first receiving hopper, 15, encoder, 16, second receiving hopper, 17, packaging machine, 18, fourth conveyor line, 3-1, infusion bag, 3-2, infusion bag head, 3-3, infusion Small end of liquid bag, 4-1, bag placing slot, 6-1, first suction cup, 6-2, second suction cup, 6-3, first filter, 6-4, second filter, 6-5, first vacuum switch, 6-6, second vacuum switch, 6-7, first vacuum generator, 6-8, second vacuum generator, 6-9, gas interface, 6-10, pressure regulating filtration and oil-water separation device, 6-11, solenoid valve, 6-12, muffler, 6-13, air collection device, 6-14, exhaust pipe. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043] The embodiment of the present invention provides an automatic flipping and sorting system for infusion bags, such as Figure 1 and Figure 2 The automatic flipping and sorting system for infusion bags mainly includes a first conveyor line 2, a second conveyor line 3, an online re-inspection scale 4, a third conveyor line 5, a flattening device 6, a rejection device 13, a first receiving hopper 14, a visual device 7, an industrial light source 8, a robot 9, a rack 10, a clamp, a suction cup 11, an encoder 15, a fourth conveyor line 18, a fifth conveyor line 12, and a second receiving hopper 16; the relationship between the above components is as follows:

[0044] The first conveyor line 2, the second conveyor line 3, the third conveyor line 5, the fourth conveyor line 18 and the fifth conveyor line 12 are arranged in sequence, and the fourth conveyor line 18 is a curved conveyor line, so that the conveying directions of the first conveyor line 2, the second conveyor line 3 and the third conveyor line 5 are perpendicular to the conveying direction of the fifth conveyor line 12; the online re-inspection scale 4 is located between the second conveyor line 3 and the third conveyor line 5, and the third conveyor line 5 is installed with a rejection device 13 on one side close to the online re-inspection scale 4, and a flattening device 6 is installed on the other side; the first receiving hopper 14 is located below the rejection device 13, and the first receiving hopper 14 is used to collect the underweight or overweight conveyor rejected by the rejection device 13 Liquid bag 3-1; the fifth conveyor line 12 passes through the frame 10, the encoder 15 and the visual device 7 are respectively fixed at the head end and the end of the fifth conveyor line 12, and the second receiving hopper 16 is located below the head end of the fifth conveyor line 12, and is used to collect the infusion bags 3-1 that have not been successfully flipped 180 degrees and are identified by the visual device 7; there are two industrial light sources 8, which are respectively fixed on both sides of the upper part of the frame 10, and the robot 9 is fixed in the center of the upper part of the frame 10. The suction cup 11 is installed below the robot 9 through a clamp, and is used to suck the infusion belt transported on the fifth conveyor line 12 to the bag placement slot 4-1 of the packaging machine 17 to realize the positioning and grasping of the infusion bag 3-1.

[0045] The first conveyor line 2, the second conveyor line 3, the third conveyor line 5, the fourth conveyor line 18 and the fifth conveyor line 12 mentioned above all include motors, frequency converters, legs, side panels, brackets and conveyor belts.

[0046] Among them, the first conveyor line 2 is used to convey the infusion bag 3-1 under the filling machine 1. It is an intermittent working system. After the filling is completed, the first conveyor line 2 stops when the infusion bag 3-1 is placed. After the placement is completed, the first conveyor line 2 starts. The conveying speed of the conveyor belt is controlled by the frequency converter, so that the infusion bag 3-1 is transported to one workstation on the first conveyor line 2 during the period from the start to the completion of the placement. The infusion bags 3-1 are arranged side by side on the conveyor belt of the first conveyor line 2.

[0047] The conveyor belt of the first conveyor line 2 is a hollow structure to prevent the filling leakage from splashing. The first conveyor line 2 is provided with a receiving tray, a discharge port and a valve, which are used to centrally collect the filling leakage to the receiving tray, which is clean and hygienic.

[0048] The second conveyor line 3 includes an inclined conveyor belt close to the first conveyor line 2 and a horizontal conveyor belt close to the online re-inspection scale 4;

[0049] The height between the end of the slope conveyor belt and the first conveyor line 2 is 200mm to 400mm, and the height is adjustable, so that the infusion bag 3-1 on the first conveyor line 2 can be turned 180 degrees by utilizing the height difference between the end of the slope conveyor belt and the first conveyor line 2 and the slope of the slope conveyor belt;

[0050] The height of the horizontal conveyor belt is consistent with the online re-inspection scale 4 to facilitate the transportation of the infusion bag 3-1;

[0051] The frequency converter of the second conveyor line 3 controls the conveying speed of the slope conveyor belt and the horizontal conveyor belt, and the adjacent infusion bags 3-1 are pulled apart by the mutual cooperation between the second conveyor line 3 and the first conveyor line 2.

[0052] The online re-inspection scale 4 weighs the infusion bags 3 - 1 that pass through the second conveyor line 3 in sequence and are separated from each other online, and adjusts the conveying speed of the online re-inspection scale 4 through the weighing controller so that there is always only one infusion bag 3 - 1 on the online re-inspection scale 4.

[0053] The rejecting device 13 includes a cylinder, a rejector and a guide device; under the cooperation of the cylinder and the guide device, the rejector rejects the underweight or overweight infusion bag 3-1 to the first receiving hopper 14 without affecting the delivery of the next infusion bag 3-1;

[0054] The flattening device 6 comprises a bracket and a roller mounted on the bracket;

[0055] The infusion bag 3-1 passes through the gap between the roller and the conveyor belt under the conveyance of the third conveyor line 5, so as to flatten the deformed infusion bag 3-1;

[0056] The distance between the gap between the roller and the conveyor belt is adjustable to accommodate infusion bags 3 - 1 of different specifications.

[0057] The fifth conveyor line 12 is at 90 degrees to the direction in which the packaging machine 17 conveys the infusion bag 3 - 1 . It adopts a hollow structure and is higher than the packaging machine 17 , so it does not affect the movement of the packaging machine 17 .

[0058] The visual device 7 is used to detect the position and front and back information of the infusion bag 3-1. It is located directly above the infusion bag 3-1 transported on the fifth conveyor line 12 to ensure that the infusion bag 3-1 is within its field of view;

[0059] The visual device 7 includes a lens, the pixel of the lens is at least 1.3 million, the focal length is 6mm-10mm, and the installation height is 500mm-600mm;

[0060] The encoder 15 is used to detect the real-time moving distance of the fifth conveyor line 12. The resolution thereof matches the speed and diameter of the motor shaft in the fifth conveyor line 12. A PNP rotary encoder with an incremental resolution of 1024 is used.

[0061] Schematic diagram of infusion bag Figure 3 As shown, the front end of the infusion bag 3-1 is provided with an infusion bag head 3-2 and an infusion bag head 3-3, and the visual device 7 identifies the features of the infusion bag head 3-2 and the infusion bag head 3-3 to identify the front and back information.

[0062] The schematic diagram of infusion bag stacking is as follows Figure 4 As shown, the infusion bags 3 - 1 are stacked in two rows and three columns, with the front side facing upward, and the large ends 3 - 2 and 3 - 3 of the infusion bags are oriented in the same direction, and circulate in sequence under the action of the packaging machine 17 .

[0063] The frequency converters in the first conveyor line 2, the second conveyor line 3, the third conveyor line 5, the fourth conveyor line 18 and the fifth conveyor line 12 and the cylinders and rejectors in the rejecting device 13 are all controlled by the main controller, and each frequency converter can adjust the conveying speed of the corresponding conveyor line. The main controller adopts a programmable logic controller, the solenoid valve used in the action of the suction cup 11 is controlled by the robot 9 controller, the online re-inspection scale 4 is controlled by the weighing controller, and the programmable logic controller communicates with the robot 9 controller and the re-inspection scale to realize data interaction.

[0064] The working flow chart of the automatic flipping and sorting system for infusion bags provided in this embodiment is as follows: Figure 5 As shown, the specific working process is as follows:

[0065] The filled infusion bags 3-1 are continuously and evenly distributed through the first conveyor line 2, and are turned over by the drop, stretched and re-inspected online. The infusion bags 3-1 that pass the re-inspection are flattened by the flattening device 6, and their positions and angles are detected by the visual device 7. The encoder 15 then processes and calculates the real-time motion position, and drives the robot 9 to drive the suction cup 11, so that the suction cup 11 absorbs the infusion bag 3-1 and puts the infusion bag 3-1 into the bag placement slot 4-1.

[0066] Figure 6 The air circuit schematic diagram of the suction cup, wherein the first suction cup 6-1 and the second suction cup 6-2 are installed on the fixture, each fixture is equipped with 2 suction cups to increase the suction force to suck the infusion bag 3-1, and are controlled by the first vacuum generator 6-7 and the second vacuum generator 6-8 respectively. The first filter 6-3 is installed between the first vacuum generator 6-7 and the first suction cup 6-1, and the second filter 6-4 is installed between the second vacuum generator 6-8 and the second suction cup 6-2. The first filter 6-3 and the second filter 6-4 realize air filtration, and the first vacuum switch 6-5 and the second vacuum switch 6-6 are installed at the same time. The vacuum degree is detected to facilitate program control. The first vacuum generator 6-7 and the second vacuum generator 6-8 are controlled by the same solenoid valve 6-11. The solenoid valve 6-11 is a three-position five-way structure to realize three states of vacuuming, middle sealing and vacuum breaking. The outlet of the solenoid valve 6-11 is equipped with a muffler 6-12. Clean compressed air is introduced into the solenoid valve 6-11 through the gas interface 6-9, the pressure regulating filter and the oil-water separation device 6-10. The vacuumed gas is collected through the air collecting device 6-13 and discharged to the outside through the exhaust pipe 6-14, so as to achieve the requirement that the air cannot be discharged into the packaging workshop.

[0067] To sum up, the automatic flipping and sorting system for infusion bags provided in the embodiment of the present invention can realize drop bag flipping, variable speed pulling distance, online weighing, high-speed rejection, front and back bag identification and positioning grasping, etc., and solve the purification treatment of exhaust gas, realize the automation of subsequent packaging of infusion bags 3-1, reduce sorting errors in the sorting work of infusion bags 3-1, and also reduce the labor intensity and workload of manual sorting, thereby improving work efficiency.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Ordinary technicians in the relevant field can still modify or make equivalent substitutions to the specific implementation methods of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. An automatic flipping and sorting system for infusion bags, characterized in that: The system includes a first conveyor line, a second conveyor line, an online re-inspection scale, a third conveyor line, a flattening device, a rejection device, a first receiving hopper, a visual device, an industrial light source, a robot, a rack, a fixture, a suction cup, an encoder, a fourth conveyor line, a fifth conveyor line, and a second receiving hopper; The first conveyor line, the second conveyor line, the third conveyor line, the fourth conveyor line and the fifth conveyor line are arranged in sequence, and the fourth conveyor line is a curved conveyor line, so that the conveying directions of the first conveyor line, the second conveyor line and the third conveyor line are perpendicular to the conveying direction of the fifth conveyor line; the online re-inspection scale is located between the second conveyor line and the third conveyor line, a rejection device is installed on one side of the third conveyor line close to the online re-inspection scale, and a flattening device is installed on the other side thereof, and the first receiving hopper is located below the rejection device; The fifth conveyor line passes through the frame, the encoder and the visual device are respectively fixed at the head end and the end of the fifth conveyor line, and the second receiving hopper is located below the head end of the fifth conveyor line; the industrial light source and the robot are both fixed on the frame, and the suction cup is installed below the robot through a clamp; The second conveyor line includes an inclined conveyor belt close to the first conveyor line and a horizontal conveyor belt close to the online re-inspection scale; The end of the slope conveyor belt is 200 mm to 400 mm lower than the first conveyor line and is height-adjustable, so that the infusion bag on the first conveyor line can be turned 180 degrees by utilizing the height difference between the end of the slope conveyor belt and the first conveyor line and the slope of the slope conveyor belt; The height of the horizontal conveyor belt is consistent with the online re-inspection scale to facilitate the transportation of the infusion bag; The frequency converter of the second conveyor line controls the conveying speed of the slope conveyor belt and the horizontal conveyor belt, and the adjacent infusion bags are pulled apart by the cooperation between the second conveyor line and the first conveyor line; The visual device is used to detect the position and front and back information of the infusion bag, and is located directly above the infusion bag transported on the fifth conveyor line to ensure that the infusion bag is within its field of view; The visual device includes a lens, the pixel of the lens is at least 1.3 million, the focal length is 6mm-10mm, and the installation height is 500mm-600mm; The front end of the infusion bag is provided with a large end of the infusion bag and a small end of the infusion bag, and the visual device identifies the features of the large end of the infusion bag and the small end of the infusion bag to identify the front and back information; The second receiving hopper is used to collect the infusion bags that have not been successfully turned 180 degrees as identified by the visual device; The online re-inspection scale weighs the infusion bags that pass through the second conveying line in sequence and are spaced apart online, and adjusts the conveying speed of the online re-inspection scale through the weighing controller so that there is always only one infusion bag on the online re-inspection scale; The rejecting device includes a cylinder, a rejector and a guide device; with the cooperation of the cylinder and the guide device, the rejector rejects the underweight or overweight infusion bag to the first receiving hopper without affecting the transportation of the next infusion bag.

2. The automatic flipping and sorting system for infusion bags according to claim 1 is characterized in that: The first conveyor line, the second conveyor line, the third conveyor line, the fourth conveyor line and the fifth conveyor line all include a motor, a frequency converter, supporting legs, a side plate, a bracket and a conveyor belt.

3. The automatic flipping and sorting system for infusion bags according to claim 2 is characterized in that: The first conveyor line is intermittently operated. When the infusion bag is placed after filling, the first conveyor line stops and starts after placement. The conveying speed of the conveyor belt is controlled by a frequency converter so that the first conveyor line conveys the infusion bag to one station from the start to the completion of placement. The conveyor belt of the first conveyor line is a hollow structure, and the first conveyor line is provided with a receiving tray, a discharge port and a valve for centrally collecting the filling leakage to the receiving tray.

4. The automatic turning and sorting system for infusion bags according to claim 1 is characterized in that: The flattening device comprises a bracket and a roller mounted on the bracket; The infusion bag passes through the gap between the roller and the conveyor belt under the conveyance of the third conveyor line, so as to flatten the deformed infusion bag; The distance between the roller and the conveyor belt is adjustable to accommodate infusion bags of different specifications.

5. The automatic turning and sorting system for infusion bags according to claim 1 is characterized in that: The fifth conveyor line is at 90 degrees to the direction in which the packaging machine conveys the infusion bags. It adopts a hollow structure and is higher than the packaging machine, so it does not affect the movement of the packaging machine.

6. The automatic turning and sorting system for infusion bags according to claim 1, characterized in that: The encoder is used to detect the real-time moving distance of the fifth conveyor line. Its resolution matches the speed and diameter of the motor shaft in the fifth conveyor line, and an incremental PNP rotary encoder is used.

Images