An automatic bag feeding device

Abstract

The utility model relates to tea packaging equipment technical field especially, more particularly to a kind of automatic bag feeding device.Its technical scheme includes base and the first conveyor, first support, second support, third support, fourth support, fifth support, sixth support and second conveyor that are distributed in the circumferential array around the edge of the base in turn.The utility model utilizes the cooperation of base, top cover, bag opening mechanism, nitrogen filling mechanism, bag suction mechanism, bag clamping mechanism, bag suction mechanism, driving mechanism and stretch control mechanism and the like structure, realizes tea packaging whole course automation.Equipment automatically bag, circulation, accurate bag supporting, quantitative filling, slag cleaning, nitrogen filling fresh-keeping and hot cold sealing combination packaging, without manual contact.Both improve production efficiency and operation accuracy, reduce material loss, avoid pollution, optimize packaging appearance and sealing quality, prolong shelf life, adapt to modern production line efficient high-quality demand.

Description

Technical Field

[0001] This utility model relates to the field of tea packaging equipment technology, and in particular to an automatic bag feeding device. Background Technology

[0002] As a traditional advantageous agricultural product in my country, the packaging technology of tea directly affects its product quality and market competitiveness. Traditional tea bottling relies heavily on manual labor or semi-automated equipment, which has many technical drawbacks and makes it difficult to meet the needs of large-scale, high-quality production.

[0003] In traditional bottling processes, the steps of bag placement, bag opening, filling, and sealing require manual operation in segments. This process is time-consuming to switch between steps, and the inconsistent pace of manual operation limits output per unit time, making it unsuitable for the high-efficiency demands of modern production lines. Furthermore, uneven bag opening force and significant deviations in bag positioning during manual bag opening easily lead to tea spillage during filling, causing material loss and further increasing production costs due to the waste of high-value tea. The problems with cleanliness and consistency are particularly prominent in traditional processes. Direct contact between humans and tea leaves can introduce contaminants such as sweat and hair, failing to meet food hygiene standards; and the appearance of manually filled packaging is inconsistent due to uneven sealing force. In addition, cleaning residual debris at the bag opening relies on manual wiping, which is inefficient and incomplete. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an automatic bag feeding device.

[0005] The technical solution of this utility model is as follows: An automatic bag feeding device includes a base and a first conveyor, a first support, a second support, a third support, a fourth support, a fifth support, a sixth support, and a second conveyor arranged in a circular array around the edge of the base. Multiple paper-plastic packaging bags to be filled are stacked on the first conveyor. The device also includes: a bag opening mechanism installed on the first, second, and third supports to open the opening and inner cavity of the paper-plastic packaging bags; a tea filling machine for filling the opened paper-plastic packaging bags with tea leaves on the fourth support; a nitrogen filling mechanism corresponding to the paper-plastic packaging bags on the fifth support; a bag suction mechanism disposed on the sixth support and the second conveyor; a top cover located directly above the base; multiple bag clamping mechanisms corresponding to the first conveyor, first support, second support, third support, fourth support, fifth support, sixth support, and second conveyor on the base; a bag suction mechanism on the first conveyor to transfer the paper-plastic packaging bags to the bag clamping mechanisms; a drive mechanism for rotating the top cover on the upper surface of the base; and a tension control mechanism fixedly connected to the bottom of the top cover to open the bag clamping mechanisms.

[0006] Optionally, the bag clamping mechanism includes multiple pairs of first clamping rods and second clamping rods rotatably connected to the bottom of the top cover. One end of each of the first and second clamping rods is fixedly connected to a support cylinder. A thrust rod is provided inside the support cylinder. One end of the thrust rod is rotatably connected to a rotating rod that moves through the support cylinder. A rotating seat is rotatably connected to the end of the thrust rod away from the rotating rod. A rotating clamping plate is rotatably connected to the end of the rotating seat away from the thrust rod. The rotating clamping plate is also rotatably connected to the support cylinder. A fixed clamping plate corresponding to the rotating clamping plate is also fixedly connected to the end of the support cylinder away from the first and second clamping rods. A limiting groove for the rotating rod to slide is provided at the end of the support cylinder near the first and second clamping rods.

[0007] Optionally, the bag clamping mechanism further includes a plurality of support columns fixedly connected to the upper surface of the base, corresponding to the first clamping rod and the second clamping rod. A second cylinder is fixedly connected inside the top end of each support column. A push plate is fixedly connected to the piston rod of each second cylinder. An inclined plate is fixedly connected to both ends of each push plate, which pushes the rotating rod to open the rotating clamping plate, the fixed clamping plate, and the first clamping rod and the second clamping rod in sequence. A first spring is fixedly connected to the middle of the first clamping rod and the second clamping rod to rotate and close the first clamping rod and the second clamping rod.

[0008] Optionally, the bag suction mechanism includes a rotating frame mounted on a first conveyor, the rotating frame having a suction tray that rotates to suck up paper-plastic packaging bags, a contact sensor being provided at one end of the first conveyor, a second motor for driving the rotating frame to rotate being fixedly connected to the outer wall of the first conveyor, the contact sensor being electrically connected to the input terminal of a controller, and the output terminal of the controller being electrically connected to the second motor.

[0009] Optionally, the suction bag mechanism includes an L-shaped bracket fixedly connected to the outer wall of the base. The top end of the L-shaped bracket is fixedly connected to a first clamping mechanism corresponding to the rotating frame. The top outer wall of the L-shaped bracket is also fixedly connected to a third motor that drives the first clamping mechanism to rotate. One end of the first clamping mechanism is provided with a clamping plate that clamps the paper-plastic packaging bag to the rotating clamping plate and the fixed clamping plate.

[0010] Optionally, the bag-opening mechanism includes a suspension frame fixedly connected to a first support and a second support. Each suspension frame is equipped with a pair of fourth cylinders. The piston rods of the fourth cylinders movably pass through the suspension frame and are fixedly connected to a suction clamping plate. A pair of second suction nozzles are fixedly connected to the suction clamping plate on the first support, and a first suction nozzle is fixedly connected to the suction clamping plate on the second support. A third cylinder is also fixedly connected to the first support, and a second clamping mechanism is fixedly connected to the piston rod of the third cylinder. A fifth cylinder is fixedly connected to the third support, and a support block is also fixedly connected to the third support. The piston rod of the cylinder moves through the third support block and is fixedly connected to a hydraulic cylinder. A pair of opening and closing clamping rods are rotatably connected to the support block. A push-pull rod is rotatably connected to the middle of each opening and closing clamping rod. A central support is rotatably connected to the end of each push-pull rod away from the opening and closing clamping rods. A hydraulic cylinder is fixedly connected to the middle of the central support. The hydraulic cylinder is fixedly connected to the piston rod of the fifth cylinder. An air jet block is fixedly connected to the piston rod of the hydraulic cylinder after it moves through the central support. The air jet block is inserted into the paper-plastic packaging bag to blow air and open the paper-plastic packaging bag. An opening and closing plate is fixedly connected to the end of each opening and closing clamping rod away from the support block.

[0011] Optionally, the stretching control mechanism includes a clamping pad fixedly connected to the opening and closing plate. The clamping pad has an arc-shaped groove in the middle that tightly engages with the air jet block. The lower surface of the top cover is fixedly connected to a plurality of first cylinders arranged in a circumferential array and corresponding to the bag clamping mechanism. The ends of the first clamping rod and the second clamping rod away from the support cylinder are both fixedly connected to a protrusion. The piston rods of the first cylinders are all fixedly connected to a V-shaped abutment that causes the protrusion to drive the first clamping rod and the second clamping rod to open.

[0012] Optionally, the nitrogen filling mechanism includes a sixth cylinder fixedly connected to the fifth bracket. The piston rod of the sixth cylinder moves through the fifth bracket and is fixedly connected to a nitrogen filling nozzle, which is used to fill the paper-plastic packaging bag with nitrogen.

[0013] Optionally, the drive mechanism includes a support column fixedly connected to the top of the base, a first motor fixedly connected inside the top of the support column, a rotating sleeve movably sleeved on the top of the support column, a cross fixedly connected to the output shaft of the first motor, the cross fixedly connected to the inner wall of the rotating sleeve, and the top of the rotating sleeve fixedly connected to the top cover.

[0014] Optionally, the suction bag mechanism includes a heat sealing mechanism fixedly connected to the sixth bracket. The bottom of the heat sealing mechanism is provided with an opening and closing heat sealing clamp. After the heat sealing clamp is opened, it is used for the paper-plastic packaging bag to rotate and be inserted around the top cover. The top of the second conveyor is provided with a cold sealing mechanism. The bottom of the cold sealing mechanism is provided with a cold sealing clamp. After the cold sealing clamp is opened, it is used for the paper-plastic packaging bag to rotate and be inserted around the top cover. The upper surface of the base is also fixedly connected with a vertical bracket. The top of the vertical bracket is fixedly fitted with a fourth motor. The output shaft of the fourth motor is fixedly connected with a rotating blade that rotates and actuates the opening end of the paper-plastic packaging bag.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This utility model utilizes a combination of a base, top cover, bag opening mechanism, nitrogen filling mechanism, bag suction mechanism, bag clamping mechanism, bag suction mechanism, drive mechanism, and stretching control mechanism to achieve automatic bag loading, bag opening, quantitative filling, nitrogen filling for freshness preservation, and heat and cold sealing combination packaging. The entire process is automated and requires no manual contact, enabling continuous operation of each process to improve production efficiency, ensuring operational accuracy in bag opening, filling, and sealing, reducing material loss and avoiding human contamination, while optimizing packaging appearance and sealing quality, and extending the shelf life of tea. It can fully meet the needs of modern production lines for efficient operation and high-quality output. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an automatic bag feeding device according to this utility model is provided; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Partial structural diagram; Figure 4 for Figure 1 A partial diagram of the split structure; Figure 5 for Figure 4 A schematic diagram of the split structure; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 for Figure 6 A partial cross-sectional structural diagram.

[0017] Reference numerals: 1. Base; 101. Top cover; 102. Support column; 103. First motor; 104. Sleeve; 105. First clamping rod; 106. Second clamping rod; 107. First spring; 108. Protruding column; 109. First cylinder; 110. V-shaped abutment; 111. Support cylinder; 112. Thrust rod; 113. Rotating rod; 114. Rotating seat; 115. Second spring; 116. Rotating clamping plate; 117. Fixed clamping plate; 118. Support column; 119. Second cylinder; 120. Push plate; 121. Inclined plate; 2. First conveyor; 21. First clamping mechanism; 22. Clamping plate; 23. Rotating frame; 24. Second motor; 25. Suction plate; 26. L-shaped bracket; 27. Third motor; 3. First support; 31. Third cylinder; 32. Second clamping mechanism; 33. Photoelectric sensor; 4. Second support; 341. Suspension frame; 342. Fourth cylinder; 343. Suction clamp; 344. First suction nozzle; 345. Second suction nozzle; 5. Third support; 51. Fifth cylinder; 52. Support block; 53. Hydraulic cylinder; 54. Air jet block; 55. Central support; 56. Push-pull rod; 57. Opening and closing clamping rod; 58. Opening and closing plate; 59. Clamping pad; 6. Fourth support; 61. Tea filling machine; 7. Fifth support bracket; 71. Sixth cylinder; 72. Nitrogen filling nozzle; 8. Sixth support; 81. Heat sealing mechanism; 82. Heat sealing clamp; 9. Second conveyor; 91. Cold sealing mechanism; 92. Cold sealing clamp; 10. Vertical support; 1001. Fourth motor; 1002. Rotating blade; 11. Paper-plastic packaging bags. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example

[0025] like Figures 1 to 7As shown, the present invention proposes an automatic bag feeding device, comprising a base 1 and a first conveyor 2, a first support 3, a second support 4, a third support 5, a fourth support 6, a fifth support 7, a sixth support 8, and a second conveyor 9 arranged in a circumferential array around the edge of the base 1. Multiple paper-plastic packaging bags 11 awaiting filling are stacked on the first conveyor 2. The paper-plastic packaging bags 11 pass through a multi-station rotary automatic bag feeding device, sequentially completing bag loading, bag opening, filling, nitrogen filling, and sealing in each process, ultimately forming a finished package before being discharged. Specifically, the outer wall of the base 1 is provided with a first conveyor 2, a first support 3, a second support 4, a third support 5, a fourth support 6, a fifth support 7, a sixth support 8, and a second conveyor 9 arranged in a circumferential array. The fourth support 6 is equipped with a tea filling machine 61 for filling the opened paper-plastic packaging bags 11 with tea. The tea filling machine 61 quantitatively fills the opened paper-plastic packaging bags 11 that have been transferred to this station with tea. A top cover 101 is provided directly above the base 1. The top cover 101 rotates in conjunction with the drive mechanism, which drives the bag clamping mechanism and the paper-plastic packaging bag 11 to each process station.

[0026] In this embodiment, as Figure 1 and Figure 3 As shown, the first conveyor 2 is equipped with a suction mechanism that transfers the paper-plastic packaging bag 11 to the bag clamping mechanism. The suction mechanism includes a rotating frame 23 on the first conveyor 2, and a suction tray 25 on the rotating frame 23 that rotates and sucks up the paper-plastic packaging bag 11. The suction tray 25 sucks up the paper-plastic packaging bag 11 on the first conveyor 2 to assist in the transfer of the bag. One end of the first conveyor 2 is also equipped with a contact sensor. A contact sensor is a device that can detect whether an object is in physical contact with itself and convert the contact state into an electrical signal output. A second motor 24 that drives the rotating frame 23 to rotate is fixedly connected to the outer wall of the first conveyor 2. The second motor 24 drives the rotating frame 23 to rotate, so that the suction tray 25 sucks up the paper-plastic packaging bag 11 and transfers it to a designated position. The contact sensor is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the second motor 24.

[0027] It is worth noting that, such as Figure 1 and Figure 3 As shown, the suction bag mechanism includes an L-shaped bracket 26 fixedly connected to the outer wall of the base 1. The top end of the L-shaped bracket 26 is fixedly connected to a first clamping mechanism 21 corresponding to the rotating frame 23. The top outer wall of the L-shaped bracket 26 is also fixedly connected to a third motor 27 that drives the first clamping mechanism 21 to rotate. One end of the first clamping mechanism 21 is provided with a clamping plate 22 that clamps the paper-plastic packaging bag 11 to the rotating clamping plate 116 and the fixed clamping plate 117. The clamping plate 22 clamps the paper-plastic packaging bag 11 and places it on the clamping plate between the two clamping rods.

[0028] Furthermore, such as Figure 4 , Figure 6and Figure 7 As shown, the base 1 is equipped with multiple bag clamping mechanisms corresponding to the first conveyor 2, the first support 3, the second support 4, the third support 5, the fourth support 6, the fifth support 7, the sixth support 8, and the second conveyor 9. Each bag clamping mechanism includes multiple pairs of first clamping rods 105 and second clamping rods 106 rotatably connected to the bottom of the top cover 101. One end of each of the first clamping rods 105 and second clamping rods 106 is fixedly connected to a support cylinder 111. The support cylinder 111 provides support for the rotating clamping plate 116 and assists in clamping the paper-plastic packaging bag 11. Inside the support cylinder 111 is a thrust rod 112. The thrust rod 112 is pushed and moved by the rotating rod 113, causing the rotating seat 114 to open the rotating clamping plate 116. One end of the thrust rod 112 is rotatably connected to a rotating rod 113 that moves through the support cylinder 111. The rotating rod 113 is pushed and slid by the inclined plate 121, causing the thrust rod 112 to move, thereby controlling the opening and closing of the rotating clamping plate 116. The end of the push rod 112 away from the rotating rod 113 is rotatably connected to a rotating seat 114. The rotating seat 114 transmits the thrust of the push rod 112, causing the rotating clamping plate 116 to rotate and open around the support cylinder 111. The end of the rotating seat 114 away from the push rod 112 is rotatably connected to the rotating clamping plate 116. The rotating clamping plate 116 cooperates with the fixed clamping plate 117 to clamp and release both sides of the paper-plastic packaging bag 11 through opening and closing. The rotating clamping plate 116 is also rotatably connected to the support cylinder 111. The end of the support cylinder 111 away from the first clamping rod 105 and the second clamping rod 106 is also fixedly connected to a fixed clamping plate 117 corresponding to the rotating clamping plate 116. The fixed clamping plate 117 corresponds to the rotating clamping plate 116 and cooperates with it to clamp both sides of the paper-plastic packaging bag 11. The support cylinder 111 has a limiting groove at one end near the first clamping rod 105 and the second clamping rod 106 for the rotating rod 113 to slide. The limiting groove is used to allow the rotating rod 113 to slide a certain distance along the support cylinder 111. This distance is the stroke for realizing the switching operation of the rotating clamp 116.

[0029] Secondly, such as Figures 3 to 7As shown, the bag clamping mechanism also includes multiple support columns 118 fixedly connected to the upper surface of the base 1, corresponding to the first clamping rod 105 and the second clamping rod 106. The support columns 118 provide mounting support for the second cylinder 119 and assist in controlling the opening and closing of the bag clamping mechanism. The second cylinder 119 is fixedly connected inside the top of the support column 118. The second cylinder 119 drives the push plate 120 to move, which in turn drives the inclined plate 121 to push the rotating rod 113, thus controlling the opening and closing of the bag clamping mechanism. The piston rod of the second cylinder 119 is fixedly connected to the push plate 120. The push plate 120 is driven by the cylinder to move, which in turn drives the inclined plate 121 to push the rotating rod 113, thereby realizing the opening and closing of the bag clamping mechanism. Both ends of the push plate 120 are fixedly connected to an inclined plate 121 that pushes the rotating rod 113 to sequentially open the rotating clamping plate 116, the fixed clamping plate 117, and the first clamping rod 105 and the second clamping rod 106. The inclined plate 121 moves with the push plate 120, pushing the rotating rod 113 to slide, thereby sequentially opening the rotating clamping plate 116, the fixed clamping plate 117, and the two clamping rods. The middle of the first clamping rod 105 and the second clamping rod 106 is fixedly connected to a first spring 107 that allows the first clamping rod 105 and the second clamping rod 106 to rotate and close. The first spring 107 provides elastic tension, allowing the two clamping rods to automatically rotate and close, ensuring stable clamping of the paper-plastic packaging bag 11.

[0030] Furthermore, such as Figures 1 to 3As shown, a bag-opening mechanism is installed on the first support 3, the second support 4, and the third support 5. This mechanism opens the paper-plastic packaging bag 11. The opening mechanism includes a suspension frame 341 fixedly connected to the first support 3 and the second support 4. Each suspension frame 341 is equipped with a pair of fourth cylinders 342. The fourth cylinders 342 drive a suction clamp 343 to move, causing the suction nozzle to open the bag. The piston rod of each fourth cylinder 342 passes through the suspension frame 341 and is fixedly connected to the suction clamp 343. The suction clamp 343 moves with the cylinder, causing either the first suction nozzle 344 or the second suction nozzle 345 to contact the bag opening of the paper-plastic packaging bag 11, assisting the suction nozzle in opening the bag. A pair of second suction nozzles 345 are fixedly connected to the suction clamp 343 on the first support 3. The second suction nozzles 345 are driven by the fourth cylinders 342 to perform the initial opening operation on the paper-plastic packaging bag 11. The suction clamp 343 on the second bracket 4 is fixedly connected to the first suction nozzle 344, which is driven by the fourth cylinder 342 to perform a secondary opening operation on the opening of the paper-plastic packaging bag 11. A third cylinder 31 is also fixedly connected to the first bracket 3. The third cylinder 31 drives the second clamping mechanism 32 to extend and retract, reaching into the pre-opened bag opening to assist in opening the bag. The piston rod of the third cylinder 31 is fixedly connected to the second clamping mechanism 32, which, driven by the cylinder, extends into the bag opening opened by the second suction nozzle 345, pre-opening the opening of the paper-plastic packaging bag 11 through clamping action. A fifth cylinder 51 is fixedly connected to the third bracket 5. The fifth cylinder 51 drives the hydraulic cylinder 53 and the central support 55 to move, driving the opening and closing clamping rod 57 to control the opening and closing plate 58. A support block 52 is also fixedly connected to the third bracket 5, providing rotational support for the opening and closing clamping rod 57 and assisting in controlling the movement of the opening and closing plate 58. The piston rod of the fifth cylinder 51 passes through the support block 52 of the third bracket 5 and is fixedly connected to a hydraulic cylinder 53. The hydraulic cylinder 53 drives the jet block 54 to extend into the paper-plastic packaging bag 11. A pair of opening and closing clamping rods 57 are rotatably connected to the support block 52. The opening and closing clamping rods 57 are rotated by the push-pull rod 56, controlling the opening and closing of the opening and closing plate 58. The middle of each opening and closing clamping rod 57 is rotatably connected to a push-pull rod 56. The push-pull rod 56 transmits power to the central support 55, causing the opening and closing clamping rod 57 to rotate around the support block 52. The end of the pair of push-pull rods 56 away from the opening and closing clamping rods 57 is rotatably connected to a central support 55. The central support 55 moves with the hydraulic cylinder 53, causing the push-pull rod 56 to pull the opening and closing clamping rods 57 to rotate. The middle of the central support 55 is fixedly connected to a hydraulic cylinder 53. The hydraulic cylinder 53 drives the jet block 54 to extend into the paper-plastic packaging bag 11, and at the same time causes the central support 55 to move. The piston rod of the hydraulic cylinder 53 is fixedly connected to the piston rod of the fifth cylinder 51. The piston rod of the hydraulic cylinder 53 moves through the central support 55 and is fixedly connected to the air jet block 54. The air jet block 54 is connected to the piston rod of the hydraulic cylinder 53 and is driven by it to insert into the paper-plastic packaging bag 11, blow air to open the bag body, and finally open the bag body.The air jet block 54 is inserted into the paper-plastic packaging bag 11 to blow air and open the paper-plastic packaging bag 11. The opening and closing clamping rod 57 is fixedly connected to the end away from the support block 52 with the opening and closing plate 58. The opening and closing plate 58 moves with the opening and closing clamping rod 57, which drives the clamping pad 59 to clamp the top opening of the paper-plastic packaging bag 11.

[0031] Furthermore, such as Figure 2 , Figure 6 and Figure 7 As shown, a tension control mechanism for opening the bag clamping mechanism is fixedly connected to the bottom of the top cover 101. The tension control mechanism includes a clamping pad 59 fixedly connected to the opening plate 58. The clamping pad 59 clamps the top opening of the paper-plastic packaging bag 11 and, in conjunction with the air jet block 54, inflates the inside of the paper-plastic packaging bag 11 to ensure complete opening. Multiple first cylinders 109, arranged in a circumferential array and corresponding to the bag clamping mechanism, are fixedly connected to the lower surface of the top cover 101. The first cylinders 109 drive the V-shaped abutment rod 110 to move and push against the protrusion 108, thereby opening the first clamping rod 105 and the second clamping rod 106. A protrusion 108 is fixedly connected to the end of the first clamping rod 105 and the second clamping rod 106 away from the support cylinder 111. The protrusion 108 is pushed by the V-shaped abutment rod 110, causing the two clamping rods to open and assisting in opening the paper-plastic packaging bag 11. The piston rod of the first cylinder 109 is fixedly connected to a V-shaped abutment 110, which causes the protrusion 108 to drive the first clamping rod 105 and the second clamping rod 106 to open. The V-shaped abutment 110 is driven by the cylinder to push the protrusion 108, causing the first clamping rod 105 and the second clamping rod 106 to rotate and open, thus helping to open the mouth of the paper-plastic packaging bag 11.

[0032] Furthermore, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the fifth support 7 is also equipped with a nitrogen filling mechanism corresponding to the paper-plastic packaging bag 11. The nitrogen filling mechanism includes a sixth cylinder 71 fixedly connected to the fifth support 7. The piston rod of the sixth cylinder 71 is connected to a nitrogen filling nozzle 72, which drives the nitrogen filling nozzle 72 to extend and retract, entering the bag to perform nitrogen filling. The piston rod of the sixth cylinder 71 moves through the fifth support 7 and is fixedly connected to the nitrogen filling nozzle 72. The nitrogen filling nozzle 72 is connected to the piston rod of the sixth cylinder 71 and is driven by it to extend into the paper-plastic packaging bag 11 filled with tea, filling the bag with nitrogen to replace the air and preserve freshness. The nitrogen filling nozzle 72 is used to fill the paper-plastic packaging bag 11 with nitrogen. The upper surface of the base 1 is provided with a drive mechanism for rotating the top cover 101. The drive mechanism includes a support column 102 fixedly connected to the top of the base 1. A first motor 103 is fixedly connected inside the top of the support column 102. The output shaft of the first motor 103 is connected to a cross and drives a rotating sleeve 104 to rotate, thereby driving the top cover 101 to rotate and realize the bag body station switching. A rotating sleeve 104 is also movably fitted on the top of the support column 102. The inner wall of the rotating sleeve 104 is fixed to the cross of the first motor 103, and the top of the sleeve is connected to the top cover 101, transmitting motor power to drive the top cover 101 to rotate. The output shaft of the first motor 103 is fixedly connected to a cross, which is fixedly connected to the inner wall of the rotating sleeve 104. The top of the rotating sleeve 104 is fixedly connected to the top cover 101.

[0033] Furthermore, such as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the sixth support 8 and the second conveyor 9 are equipped with a bag suction mechanism. The bag suction mechanism includes a heat sealing mechanism 81 fixedly connected to the sixth support 8. The heat sealing mechanism 81 provides drive and support for the heat sealing clamp 82, controlling the heat sealing clamp 82 to heat seal the bag opening. The bottom of the heat sealing mechanism 81 is equipped with an opening and closing heat sealing clamp 82. The heat sealing clamp 82 is located at the bottom of the heat sealing mechanism 81 and can be opened and closed. When opened, the paper-plastic packaging bag 11 is inserted, and when closed, the bag opening is heat-sealed to achieve a preliminary seal. After the heat sealing clamp 82 is opened, it is used for the paper-plastic packaging bag 11 to rotate and be inserted around the top cover 101. The top of the second conveyor 9 is equipped with a cold sealing mechanism 91. The cold sealing mechanism 91 provides drive and support for the cold sealing clamp 92, controlling the cold sealing clamp 92 to cold seal the bag opening. The cold sealing mechanism 91 has a cold sealing clip 92 at its bottom. The cold sealing clip 92 is located at the bottom of the cold sealing mechanism 91 and can be opened and closed. When opened, it allows the paper-plastic packaging bag 11 to be inserted; when closed, it quickly shapes the heat-sealed bag opening and strengthens the seal. When opened, the cold sealing clip 92 allows the paper-plastic packaging bag 11 to rotate and be inserted around the top cover 101. A vertical support 10 is also fixedly connected to the upper surface of the base 1. A fourth motor 1001 is fixedly mounted on the top of the vertical support 10. The output shaft of the fourth motor 1001 is connected to a rotating leaf 1002, driving the rotating leaf 1002 to rotate and agitate the bag opening to remove residue. The output shaft of the fourth motor 1001 is fixedly connected to the rotating leaf 1002, which rotates and agitates the opening of the paper-plastic packaging bag 11, shaking off residual tea leaves.

[0034] In this embodiment, when using the automatic bag feeding device, the paper-plastic packaging bags 11 are first automatically stacked with their open ends facing the base 1. When the paper-plastic packaging bags 11 are conveyed and come into contact with the sensor, the controller receives a signal and starts the second motor 24, which drives the rotating frame 23 to rotate. The suction plate 25 on the frame picks up the paper-plastic packaging bags 11 and rotates them to the designated position. Then, the third motor 27 on the L-shaped bracket 26 drives the first clamping mechanism 21 to rotate, which causes the open clamping plate 22 to clamp the open end of the paper-plastic packaging bag 11 and place it between the support cylinder 111 on the first clamping rod 105 and the second clamping rod 106.

[0035] At this time, the second cylinder 119 on the support column 118 drives the push plate 120 to move. The push plate 120 pushes the rotating rod 113 on the first clamping rod 105 and the second clamping rod 106. The rotating rod 113 drives the push rod 112 and the rotating seat 114 to move. The rotating seat 114 pushes the rotating clamping plate 116 to rotate and open through the support cylinder 111. At the same time, the inclined plates 121 at both ends of the push plate 120 push the rotating rod 113 to open, so that the distance between the support cylinders 111 increases to accommodate the placement of the paper-plastic packaging bag 11. When the push plate 120 retracts, the first clamping rod 105 and the second clamping rod 106 reduce the distance to slightly larger than the width of the paper-plastic packaging bag 11 through the elastic thrust of the first spring 107. The rotating clamping plate 116 and the fixed clamping plate 117 clamp the two sides of the paper-plastic packaging bag 11 through the elastic tension of the second spring 115, achieving stable clamping throughout the process.

[0036] Next, the first motor 103 at the top of the support column 102 drives the rotating sleeve 104 to rotate the top cover 101, so that the paper-plastic packaging bag 11 held by the pair of first clamping rods 105 and second clamping rods 106 is aligned with the first bracket 3. The photoelectric sensors 33 on both sides of the first bracket 3 detect whether the paper-plastic packaging bag 11 is offset. When it is offset, the controller triggers the corresponding second cylinder 119, thereby causing the first clamping rods 105 and second clamping rods 106 to release the clamp, so as to remove the unqualified paper-plastic packaging bag 11. The qualified bag is rotated into the first bracket 3 by rotating the top cover 101 again. Then, a pair of fourth cylinders 342 on the first bracket 3 are activated to drive the suction clamping plate 343, which drives the second suction nozzle 345 to open the bag opening. The third cylinder 31 drives the second clamping mechanism 32 to extend into the bag opening to pre-open it. Then the top cover 101 continues to rotate to the second bracket 4, and the bag opening is opened again by the first suction nozzle 344.

[0037] When the top cover 101 rotates the paper-plastic packaging bag 11 to the third support 5, the hydraulic cylinder 53 pushes the air-jet block 54 to deeply insert into the paper-plastic packaging bag 11. Then, the fifth cylinder 51 pulls the hydraulic cylinder 53 to drive the central support 55. The push-pull rod 56 drives the opening and closing clamping rod 57 to rotate, so that the opening and closing plate 58 drives the clamping pad 59 to clamp the top opening of the paper-plastic packaging bag 11. The opening end of the paper-plastic packaging bag 11 is stuck between the clamping pad 59 and the air-jet block 54. Finally, the air-jet block 54 inflates the paper-plastic packaging bag 11 to ensure that the bottom of the paper-plastic packaging bag 11 is fully opened.

[0038] The top cover 101 continues to rotate to the fourth support 6, and the tea filling machine 61 fills the bag with tea leaves. Immediately afterwards, the fourth motor 1001 on the continuously running vertical support 10 drives the rotating leaf paddle 1002 to shake off any remaining tea leaves from the bag opening. Then, the paper-plastic packaging bag 11 rotates to the fifth support 7, and the sixth cylinder 71 drives the nitrogen filling nozzle 72 to insert into the bag and fill it with nitrogen, replacing the air to preserve freshness. Next, it rotates to the sixth support 8, and the heat-sealing mechanism 81's heat-sealing clamp 82 closes to heat-seal the bag opening. It then rotates to the second conveyor 9, and the cold-sealing mechanism 91's cold-sealing clamp 92 quickly shapes the heat-sealed bag opening, thus completing the entire packaging process. When it is time to remove the finished product, the second cylinder 119 is activated again, causing the push plate 120 to push the rotating rod 113, which in turn opens the first clamping rod 105 and the second clamping rod 106, allowing the sealed tea bag to be removed.

[0039] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic bag feeding device, comprising a base (1) and a first conveyor (2), a first support (3), a second support (4), a third support (5), a fourth support (6), a fifth support (7), a sixth support (8), and a second conveyor (9) arranged in a circumferential array around the edge of the base (1), wherein a plurality of paper-plastic packaging bags (11) to be filled are stacked on the first conveyor (2), characterized in that, Also includes: The bag opening mechanism installed on the first bracket (3), the second bracket (4) and the third bracket (5) opens the opening and inner cavity of the paper-plastic packaging bag (11). The fourth bracket (6) is equipped with a tea filling machine (61) for filling the opened paper-plastic packaging bag (11) with tea. The fifth bracket (7) is also equipped with a nitrogen filling mechanism corresponding to the paper-plastic packaging bag (11). The suction bag mechanism is mounted on the sixth bracket (8) and the second conveyor (9); The top cover (101) is located directly above the base (1). The base (1) is provided with multiple bag clamping mechanisms corresponding to the first conveyor (2), the first bracket (3), the second bracket (4), the third bracket (5), the fourth bracket (6), the fifth bracket (7), the sixth bracket (8), and the second conveyor (9). The first conveyor (2) is provided with a bag suction mechanism that transfers the paper-plastic packaging bag (11) to the bag clamping mechanism. The upper surface of the base (1) is provided with a drive mechanism that rotates the top cover (101). A tension control mechanism fixedly connected to the bottom of the top cover (101) to open and close the bag clamping mechanism.

2. The automatic bag feeding device according to claim 1, characterized in that, The bag clamping mechanism includes multiple pairs of first clamping rods (105) and second clamping rods (106) rotatably connected to the bottom of the top cover (101). One end of each of the first clamping rods (105) and the second clamping rod (106) is fixedly connected to a support cylinder (111). A thrust rod (112) is provided inside the support cylinder (111). One end of the thrust rod (112) is rotatably connected to a rotating rod (113) that moves through the support cylinder (111). The end of the thrust rod (112) away from the rotating rod (113) is rotatably connected to a rotating seat (114). The rotating seat (114) is rotatably connected to a rotating clamping plate (116) at one end away from the thrust rod (112). The rotating clamping plate (116) is also rotatably connected to the support cylinder (111). The support cylinder (111) is also fixedly connected to a fixed clamping plate (117) corresponding to the rotating clamping plate (116) at one end away from the first clamping rod (105) and the second clamping rod (106). The support cylinder (111) is provided with a limiting groove for the rotating rod (113) to slide at one end near the first clamping rod (105) and the second clamping rod (106).

3. The automatic bag feeding device according to claim 2, characterized in that, The bag clamping mechanism also includes a plurality of support columns (118) fixedly connected to the upper surface of the base (1) and corresponding to the first clamping rod (105) and the second clamping rod (106). The top end of the support column (118) is fixedly connected to a second cylinder (119). The piston rod of the second cylinder (119) is fixedly connected to a push plate (120). Both ends of the push plate (120) are fixedly connected to an inclined plate (121) that pushes the rotating rod (113) to open the rotating clamping plate (116), the fixed clamping plate (117), the first clamping rod (105), and the second clamping rod (106) in sequence. The middle part of the first clamping rod (105) and the second clamping rod (106) is fixedly connected to a first spring (107) that causes the first clamping rod (105) and the second clamping rod (106) to rotate and close.

4. The automatic bag feeding device according to claim 1, characterized in that, The bag suction mechanism includes a rotating frame (23) mounted on a first conveyor (2). The rotating frame (23) is equipped with a suction tray (25) that rotates and sucks up the paper-plastic packaging bag (11). A contact sensor is also provided at one end of the first conveyor (2). A second motor (24) that drives the rotating frame (23) to rotate is fixedly connected to the outer wall of the first conveyor (2). The contact sensor is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the second motor (24).

5. An automatic bag feeding device according to claim 4, characterized in that, The bag suction mechanism includes an L-shaped bracket (26) fixedly connected to the outer wall of the base (1). The top end of the L-shaped bracket (26) is fixedly connected to a first clamping mechanism (21) corresponding to the rotating frame (23). The top outer wall of the L-shaped bracket (26) is also fixedly connected to a third motor (27) that drives the first clamping mechanism (21) to rotate. One end of the first clamping mechanism (21) is provided with a clamping plate (22) that clamps the paper-plastic packaging bag (11) to the rotating clamping plate (116) and the fixed clamping plate (117).

6. An automatic bag feeding device according to claim 1, characterized in that, The bag opening mechanism includes a suspension frame (341) fixedly connected to a first support (3) and a second support (4). Each suspension frame (341) is equipped with a pair of fourth cylinders (342). The piston rods of the fourth cylinders (342) are movably connected through the suspension frame (341) and then fixedly connected to a suction clamp (343). The suction clamp (343) on the first support (3) is fixedly connected to a pair of second suction nozzles (345). The suction clamp (343) on the second support (4) is fixedly connected to a first suction nozzle (344). A third cylinder (31) is also fixedly connected to the first support (3). The piston rod of the third cylinder (31) is fixedly connected to a second clamping mechanism (32). A fifth cylinder (51) is fixedly connected to the third support (5). A support block (52) is also fixedly connected to the third support (5). 1) The piston rod moves through the support block (52) of the third bracket (5) and is fixedly connected to a hydraulic cylinder (53). A pair of opening and closing clamping rods (57) are rotatably connected to the support block (52). A push-pull rod (56) is rotatably connected to the middle of each of the opening and closing clamping rods (57). A central support (55) is rotatably connected to the end of the pair of push-pull rods (56) away from the opening and closing clamping rods (57). A hydraulic cylinder (53) is fixedly connected to the middle of the central support (55). The hydraulic cylinder (53) is fixedly connected to the piston rod of the fifth cylinder (51). The piston rod of the hydraulic cylinder (53) moves through the central support (55) and is fixedly connected to an air jet block (54). The air jet block (54) is inserted into the paper-plastic packaging bag (11) to blow air and open the paper-plastic packaging bag (11). An opening and closing plate (58) is fixedly connected to the end of each opening and closing clamping rod (57) away from the support block (52).

7. An automatic bag feeding device according to claim 6, characterized in that, The stretching control mechanism includes a clamping pad (59) fixedly connected to the opening and closing plate (58). The lower surface of the top cover (101) is fixedly connected to a plurality of first cylinders (109) arranged in a circumferential array and corresponding to the bag clamping mechanism. The ends of the first clamping rod (105) and the second clamping rod (106) away from the support cylinder (111) are both fixedly connected to a protrusion (108). The piston rod of the first cylinder (109) is fixedly connected to a V-shaped abutment (110) that causes the protrusion (108) to drive the first clamping rod (105) and the second clamping rod (106) to open.

8. An automatic bag feeding device according to claim 1, characterized in that, The nitrogen filling mechanism includes a sixth cylinder (71) fixedly connected to the fifth bracket (7). The piston rod of the sixth cylinder (71) moves through the fifth bracket (7) and is fixedly connected to a nitrogen filling nozzle (72). The nitrogen filling nozzle (72) is used to fill the paper-plastic packaging bag (11) with nitrogen.

9. An automatic bag feeding device according to claim 1, characterized in that, The drive mechanism includes a support column (102) fixedly connected to the top of the base (1). A first motor (103) is fixedly connected inside the top of the support column (102). A rotating sleeve (104) is also movably sleeved on the top of the support column (102). A cross is fixedly connected to the output shaft of the first motor (103). The cross is fixedly connected to the inner wall of the rotating sleeve (104). The top of the rotating sleeve (104) is fixedly connected to the top cover (101).

10. An automatic bag feeding device according to claim 1, characterized in that, The suction bag mechanism includes a heat sealing mechanism (81) fixedly connected to the sixth bracket (8). The bottom of the heat sealing mechanism (81) is provided with an opening and closing heat sealing clip (82). After the heat sealing clip (82) is opened, it is used to allow the paper-plastic packaging bag (11) to rotate and be inserted around the top cover (101). The top of the second conveyor (9) is provided with a cold sealing mechanism (91). The bottom of the cold sealing mechanism (91) is provided with a cold sealing clip (92). After the cold sealing clip (92) is opened, it is used to allow the paper-plastic packaging bag (11) to rotate and be inserted around the top cover (101). The upper surface of the base (1) is also fixedly connected with a vertical bracket (10). The top of the vertical bracket (10) is fixedly fitted with a fourth motor (1001). The output shaft of the fourth motor (1001) is fixedly connected with a rotating blade (1002) that rotates and pushes the opening end of the paper-plastic packaging bag (11).

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