A fully automated powder packaging method

Abstract

This invention discloses a fully automated powder packaging method, comprising the following steps: S1, placing the packaging bag on the replenishment station; S2, horizontally pushing the packaging bag to the suction station; S3, suctioning the packaging bag and moving it horizontally to the bag supply station, where its bottom is supported by a support device; S4, using a bag-opening hook to hook and open the bag opening; S5, clamping the sides of the bag opening on both sides and rotating the bag 90°; S6, filling the packaging bag with powder; S7, stopping the filling; S8, moving the packaging bag horizontally to the heat-sealing station; S9, pre-opening the bag opening; S10, clamping the bag opening; S11, starting the air extraction; S12, removing the air extraction tube and then heat-sealing; S13, removing the sealed packaging bag. This method can automatically package powder, greatly improving packaging efficiency.

Description

Technical Field

[0001] This invention relates to the field of powder packaging technology, and in particular to a fully automated powder packaging method. Background Technology

[0002] The powder packaging machine mainly consists of a base with a hopper installed on it. A filling tube is located at the bottom of the hopper. During filling, the opening of the packaging bag used to hold the powder is usually opened manually and aligned with the filling tube. To reduce powder leakage, the opening of the packaging bag is usually wrapped around the filling tube and secured with elastic materials such as rubber bands (leaving gaps to allow gas to escape). At the same time, the packaging bag is placed on a weighing platform. The powder is filled from the hopper into the packaging bag, and the weighing platform can weigh it in real time. Finally, when the powder in the packaging bag reaches the set weight, the filling stops.

[0003] The invention publication document with patent application number 202110538112.2 discloses a semi-automatic packaging machine. The semi-automatic packaging machine allows manual loading of the bag clamping mechanism on the discharge pipe of the packaging bag, followed by filling and weighing. After filling is completed, the bag clamping mechanism is lowered as a whole to put down the packaging bag, and then other tools such as a forklift are used to remove the filled packaging bag.

[0004] However, the current semi-automatic packaging bags cannot achieve fully automatic packaging. The packaging bags still require manual handling, opening, and packing. After filling, they need to be transferred to another sealing machine for sealing. Therefore, the packaging efficiency of this semi-automatic packaging machine is too low. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fully automatic powder packaging method, which can automatically package powder and greatly improve packaging efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a fully automatic powder packaging method, comprising the following steps:

[0007] S1. Place the stacked packaging bags at the replenishment station in the placement area;

[0008] S2. Push the entire stack of packaging bags horizontally to the suction station;

[0009] S3. Using negative pressure suction, the topmost packaging bag is sucked up and moved horizontally to the bag supply station. The bottom of the packaging bag is supported by the support device and is in a horizontal state.

[0010] S4. Open the bag opening and use the bag opening hook to keep the bag opening open.

[0011] S5. The bag opening and flipping device is used to clamp the bag opening from both sides and rotate the bag by 90°. When the bag is deflected, the bag opening hook flips with the bag and always hooks the bag opening. After the bag is deflected, the bag opening faces upward and is clamped open at the filling station.

[0012] S6. The support device resets, the bag opening hooks reset with the bag opening and flipping device, and the powder is filled into the packaging bag from top to bottom.

[0013] S7. Stop filling once the weight of the powder in the packaging bag reaches the required level.

[0014] S8. Clamp the opening of the packaging bag and move the packaging bag horizontally to the heat sealing station;

[0015] S9. Pre-open the bag opening and insert the suction tube into the bag opening;

[0016] S10. Clamp the opening of the packaging bag tightly, avoiding the suction pipe when clamping;

[0017] S11. Start the air extraction and use the air extraction tube to extract the gas from the packaging bag.

[0018] S12. After pulling out the suction tube, clamp and heat seal the opening of the packaging bag.

[0019] S13. Remove the sealed packaging bag.

[0020] As a preferred solution, in step S2, the specific method of horizontally pushing the stack of packaging bags to the suction station is as follows: the packaging bags are moved horizontally using a bag supply pusher, and the packaging bags are positioned at the suction station using a longitudinal positioning plate; the bag supply pusher remains in this position and the longitudinal positioning plate continuously restricts the packaging bags; when the last packaging bag is suctioned, the bag supply pusher descends and horizontally resets to the edge of the replenishment station, and then the bag supply pusher rises again to horizontally push the stack of packaging bags pre-placed at the replenishment station to the suction station. Through the above steps, the continuous supply of packaging bags can be guaranteed, and the worker only needs to replenish the packaging bags to the replenishment station in a timely manner.

[0021] As a preferred embodiment, in step S4, the bag opening is achieved by using an upward suction cup to pick up the bag opening and open it; while the bag opening hook deflects from top to bottom to hook the bag opening, keeping it open at all times. When resetting is required, the bag opening hook deflects from bottom to top to disengage from the bag opening. This step ensures that the bag opening hook accurately hooks into the bag opening, while the bag opening remains open; it also facilitates connection with other components at the filling station.

[0022] As a preferred embodiment, in step S5, during the process of using the bag opening and flipping device to clamp the bag opening sides from both sides and rotate the bag 90°, the bag opening sides of the bag are pulled apart and tightened to both sides, so that the bag opening is tightly attached to the bag opening hooks. This makes the bag opening better hooked open by the bag opening hooks, resulting in a better bag opening effect.

[0023] As a preferred embodiment, step S6, the method of filling the powder into the packaging bag, is as follows: the packaging bag is clamped by a bag clamping device suspended on the weighing sensor, and the powder is continuously discharged from the filling outlet pipe. During discharge, the packaging bag is clamped and raised so that the filling outlet pipe is close to the bottom of the packaging bag. During the filling process, the packaging bag gradually descends, so that the height between the lower end of the filling outlet pipe and the powder in the packaging bag is always within the specified range. When the weighing sensor shows that the filling weight has reached the standard, the packaging bag is driven down so that the bottom of the packaging bag hits the object below at least twice. This method can avoid the powder flying due to the excessive height between the filling outlet pipe and the bottom of the packaging bag during filling. At the same time, the fact that the packaging bag hits at least twice after reaching the standard can make the powder in the packaging bag compact, which is convenient for subsequent sealing.

[0024] As a preferred embodiment, the specific method for moving the packaging bag horizontally to the heat-sealing station by clamping the bag opening in step S8 is as follows: After filling, the first bag-moving clamping mechanism and the second bag-moving clamping mechanism extend horizontally to correspond to the side of the bag opening. Then, the first bag-moving clamping mechanism and the second bag-moving clamping mechanism move closer to the bag opening and clamp the side of the packaging bag. The clamping device releases the packaging bag and rises to separate from the bag opening. The packaging bag is conveyed linearly on the front conveying device. During the conveying process, the first bag-moving clamping mechanism and the second bag-moving clamping mechanism always keep the bag opening of the packaging bag and straighten the bag opening. In this way, the bag opening is straightened and tidied during the bag transfer process, which facilitates the sealing of the vacuum sealing machine and results in better sealing quality.

[0025] After adopting the above technical solution, the effect of the present invention is as follows: In this packaging method, the packaging bag can be supplied to the suction station, and then the packaging bag is suctioned, moved and flipped 90°. During the flipping process, the opening of the packaging bag changes position and faces upward and is in the filling station. The packaging bag is clamped and filled with powder. After filling, it is sent to the heat sealing station for vacuuming and sealing. The whole process does not require manual intervention, has a high degree of automation and high filling efficiency. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a front view of an embodiment of the present invention;

[0028] Figure 2 This is a left view of an embodiment of the present invention;

[0029] Figure 3 This is a top view of an embodiment of the present invention;

[0030] Figure 4 This is the front view of the automatic bag feeder;

[0031] Figure 5 This is a top view of the bag feeding machine frame and bag support plate;

[0032] Figure 6 This is the front view of the bag feeding machine frame and bag support plate;

[0033] Figure 7 This is a bottom view of the bag feeding machine frame and bag support plate;

[0034] Figure 8 This is a side view of the bag feeding device and the support device;

[0035] Figure 9 This is a schematic diagram of the bag feeding device;

[0036] Figure 10 yes Figure 9 F-direction view;

[0037] Figure 11 This is a schematic diagram of the support device;

[0038] Figure 12 This is a schematic diagram of the bag-opening and flipping device;

[0039] Figure 13 yes Figure 12 Enlarged diagram at point I;

[0040] Figure 14 This is a structural diagram of an automatic filling machine;

[0041] Figure 15 This is a schematic diagram of the bag clamping device;

[0042] Figure 16 yes Figure 15 The left view;

[0043] Figure 17 yes Figure 15 Cross-sectional view in the GG direction;

[0044] Figure 18 This is a top view of the bag transfer device.

[0045] Figure 19 This is a structural diagram of a vacuum sealing machine;

[0046] Figure 20 This is a side view of a vacuum sealing machine;

[0047] Figure 21 yes Figure 20 A magnified view of the portion at point II;

[0048] Figure 22 This is a schematic diagram of the air extraction pipe installation method;

[0049] Figure 23 This is a schematic diagram of the heating parallel linkage mechanism and the clamping parallel linkage mechanism.

[0050] Figure 24 This is a schematic diagram of the clamping frame;

[0051] Figure 25 This is a schematic diagram of the structure of the first heating and sealing assembly;

[0052] In the attached diagram: 1. Automatic bag feeder; 101. Bag feeder frame; 102. Bag support plate; 103. Lateral limiting plate; 104. Longitudinal positioning plate; 105. Placement area; 106. Longitudinal slide block for bag feeding; 107. Bag feeding push rod; 108. Longitudinal sliding drive device for bag feeding; 1081. First connecting rod for bag feeding; 1082. Linear power device for bag feeding; 1083. Second connecting rod for bag feeding; 109. Bag feeding lifting power unit; 110. Strip hole; 111. Bag feeding device; 1111. Bag feeding lifting power support seat; 1112. Bag feeding lifting power unit; 1113. Bag feeding connecting plate; 1114. Bag feeding longitudinal power support seat; 1115. Bag feeding longitudinal power unit; 1116. Bag feeding longitudinal sliding frame; 1117. Bag feeding mounting frame; 11171. Bag feeding first mounting frame; 11172. Suction cup longitudinal strip hole; 11173. Bag feeding transverse strip hole; 1118. Lifting suction cup; 1119. Bag feeding limiting top block; 112. Bag opening and flipping device; 1120. Flipping main shaft; 1121. Bag opening mounting seat; 1122. Bag opening shaft; 1123. Bag opening hook; 1124. Bag opening deflection adjustment device 1125. First swing clamping device; 11251. First clamping connecting rod; 11252. First bag clamping linear power device; 11253. First clamping mounting base; 1126. Second swing clamping device; 1127. Main deflection adjustment device; 1128. Bag clamping limiting structure; 11281. Bag clamping fixing rod; 11282. Bag clamping limiting top block; 1129. First bag clamping claw; 113. Support device; 1131. Support swing arm; 1132. Support plate; 1133. Support linear cylinder; 1134. Support deflection connecting block; 114. Opening mechanism; 1141. Opening lifting frame; 1142. Opening auxiliary suction plate; 1143. Opening suction cup; 1144. Opening lifting power device;

[0053] 2. Automatic filling machine; 21. Hopper; 22. Filling and discharging pipe; 23. Screw conveyor;

[0054] 3. Front conveyor device;

[0055] 4. Bag transfer device; 41. Bag transfer bracket; 42. Bag transfer longitudinal beam; 43. Bag transfer slide 4; 44. First bag transfer clamping mechanism; 441. First transverse slide; 442. First pneumatic clamp; 443. First bag transfer feeding power device; 4431. First bag transfer connecting rod; 4432. First bag transfer feeding cylinder; 4433. First bag transfer clamping seat; 45. Second bag transfer clamping mechanism; 46. First telescopic power device; 47. Second telescopic power device;

[0056] 5. Vacuum sealing machine; 51. Fixed vertical plate; 52. Sealing mounting base plate; 53. Sealing fixing bracket; 54. Air extraction pipe; 55. Air extraction lifting power device; 56. Sealing fixing end plate; 57. First heating sealing assembly; 571. First rotating shaft; 572. First main connecting rod; 573. First auxiliary connecting rod; 574. First heating synchronization connecting block; 575. Heating synchronization rod; 576. Sealing frame; 577. Take-up roller; 578. Polytetrafluoroethylene cloth; 579. Sealing block; 58. Second heating sealing assembly; 581. Second rotating shaft; 582. Second main connecting rod; 583. Second auxiliary connecting rod; 584. Second heating synchronization connecting block; 59. Auxiliary clamping device; 591. 592. Auxiliary clamping block; 593. Second auxiliary clamping block; 594. Lower strip groove; 595. Fourth main connecting rod; 596. Fourth auxiliary connecting rod; 597. Second swing adjustment device; 598. Third main connecting rod; 599. Third auxiliary connecting rod; 590. Second clamping synchronous connecting block; 5910. First clamping synchronous connecting block; 5911. Clamping synchronous rod; 510. Pre-opening device; 5101. Suction cup mounting strip; 5102. Pre-opening suction cup; 5103. Third telescopic power device; 5104. Upper strip groove; 511. First swing adjustment device; 5111. First swing adjustment cylinder; 5112. Heated swing drive arm; 512. Heat-sealing lifting power device; 513. Cooling pipe;

[0057] 6. Rear conveying device;

[0058] 7. Weighing lifting device; 71. Weighing frame; 72. Column; 73. Weighing platform; 74. Weighing sensor; 75. Bag clamping device; 751. Bag clamping sleeve; 752. Bag clamping support plate; 753. Support plate deflection power device; 754. Clamping mechanism; 7541. Clamping arm; 7542. Clamping block; 7543. Clamping arm deflection power device; 755. Expansion and contraction clamping mechanism; 7551. First parallel connecting rod; 7552. Second parallel connecting rod; 7553. Expansion and contraction oscillation force device; 7554. Pneumatic gripper;

[0059] A. Material replenishment station; B. Suction station; C. Bag supply station; D. Filling station; E. Heat sealing station. Detailed Implementation

[0060] The present invention will be further described in detail below through specific embodiments.

[0061] A fully automated powder packaging method includes the following steps:

[0062] S1. Place the stacked packaging bags on the replenishment station A in the placement area;

[0063] S2. Push the entire stack of packaging bags horizontally to the suction station B. The specific method is as follows: use the bag supply pusher to push the packaging bags horizontally, and use the longitudinal positioning plate to position the packaging bags at the suction station B. The bag supply pusher remains in this position and the longitudinal positioning plate continuously restricts the packaging bags. When the last packaging bag is sucked up, the bag supply pusher descends and returns to its horizontal position, moving to the edge of the replenishment station. The bag supply pusher then rises again to push the stack of packaging bags that has been placed in the replenishment station horizontally to the suction station. Through the above steps, the continuous supply of packaging bags can be guaranteed, and the worker only needs to replenish the packaging bags to the replenishment station in a timely manner.

[0064] S3. Using negative pressure suction, the topmost packaging bag is sucked up and moved horizontally to the bag supply station C. The bottom of the packaging bag is supported by the support device and is in a horizontal state.

[0065] S4. Open the bag opening and use the bag opening hook to keep the bag opening open at all times. In step S4, the bag opening is opened by using an opening suction cup to lift and suck up the bag opening. The bag opening hook deflects from top to bottom to hook the bag opening, keeping it open. When resetting is required, the bag opening hook deflects from bottom to top to disengage from the bag opening. This step ensures that the bag opening hook accurately hooks into the bag opening, and the bag opening remains open. It also facilitates connection with other components at the filling station.

[0066] S5. Using the bag opening and flipping device, the bag opening sides of the packaging bag are clamped from both sides and the packaging bag is flipped 90°. During the deflection, the bag opening hook flips with the packaging bag and always hooks open the bag opening. After the deflection, the bag opening of the packaging bag faces upward and is clamped open at the filling station D. In step S5, during the process of using the bag opening and flipping device to clamp the bag opening sides of the packaging bag from both sides and flip the packaging bag 90°, the bag opening sides of the packaging bag are pulled open and tightened to both sides so that the bag opening of the packaging bag is tightly attached to the bag opening hook.

[0067] S6. The support device resets, and the bag opening hooks reset along with the bag opening and flipping device. The powder is filled into the packaging bag from top to bottom. The method of filling the packaging bag in step S6 is as follows: The packaging bag is clamped by a bag clamping device suspended on the weighing sensor. The powder is continuously discharged from the filling outlet pipe. When discharging, the packaging bag is clamped and raised so that the filling outlet pipe is close to the bottom of the packaging bag. During the filling process, the packaging bag gradually descends so that the height between the lower end of the filling outlet pipe and the powder in the packaging bag is always within the specified range. When the weighing sensor shows that the filling weight has reached the standard, the packaging bag is driven to descend so that the bottom of the packaging bag hits the object below at least twice.

[0068] S7. Stop filling once the weight of the powder in the packaging bag reaches the required level.

[0069] S8. Clamp the bag opening and move the bag horizontally to the heat sealing station E; The specific method of clamping the bag opening and moving the bag horizontally to the heat sealing station in step S8 is as follows: After filling, the first bag transfer clamping mechanism and the second bag transfer clamping mechanism extend horizontally to correspond to the side of the bag opening. Then, the first bag transfer clamping mechanism and the second bag transfer clamping mechanism move closer to the bag opening and clamp the side of the bag. The bag clamping device releases the bag and rises to separate from the bag opening. The bag is conveyed in a straight line on the front conveying device. During the conveying process, the first bag transfer clamping mechanism and the second bag transfer clamping mechanism always hold the bag opening and straighten the bag opening. In this way, the bag opening is straightened and tidied during the bag transfer process, which facilitates the vacuum sealing machine to seal and improves the sealing quality.

[0070] S9. Pre-open the bag opening and insert the suction tube into the bag opening;

[0071] S10. Clamp the opening of the packaging bag tightly, avoiding the suction pipe when clamping;

[0072] S11. Start the air extraction and use the air extraction tube to extract the gas from the packaging bag.

[0073] S12. After pulling out the suction tube, clamp and heat seal the opening of the packaging bag.

[0074] S13. Remove the sealed packaging bag.

[0075] In addition, this invention discloses a fully automatic powder packaging machine for implementing the above method, including...

[0076] like Figures 4 to 7As shown, an automatic bag feeding machine 1 includes a bag feeding frame 101, on which a bag support plate 102 is provided. The bag support plate 102 is provided with a lateral limiting structure for lateral positioning of the packaging bag and a longitudinal positioning structure for longitudinal positioning of the packaging bag. The lateral limiting structure and the longitudinal limiting structure define a placement area 105 for placing the packaging bag. In this embodiment, the lateral limiting structure includes two lateral limiting plates 103, and the longitudinal positioning structure includes two longitudinal positioning plates 104. One lateral limiting plate 103 is fixed to the bag support plate 102, and the lateral position of the other lateral limiting plate 103 is adjustable. Similarly, the longitudinal positions of the two longitudinal positioning plates 104 are adjustable. This allows the size of the placement area 105 to be adjusted to suit the placement requirements of packaging bags of different sizes.

[0077] The placement area 105 is provided with a feeding station A and a suction station B. The bag feeding frame 101 is provided with a longitudinally movable bag feeding slide 106. A bag feeding push rod 107 is ellipsably mounted on the bag feeding slide 106. The bag support plate 102 is provided with at least two slotted holes 110 extending from the feeding station A to the suction station B. The bag feeding push rod 107 passes through the bag support plate 102 and is constrained within the slotted holes 110. The bag feeding push rod 107 drives the bag feeding slide 106 to reciprocate between the feeding station A and the suction station B via a bag feeding longitudinal sliding drive device 108. The bag feeding push rod 107 is driven to rise and fall by a bag feeding lifting power device 109. The support surface is at or below the support surface of the bag support plate 102; in this embodiment, the bag supply lifting power device 109 is a cylinder; as shown in the figure, the bag supply longitudinal sliding drive device 108 includes a bag supply linear power device 1082, a bag supply first connecting rod 1081, and a bag supply second connecting rod 1083. One end of the bag supply first connecting rod 1081 is hinged to the bag supply frame 101, and one end of the bag supply second connecting rod 1083 is hinged to the bag supply longitudinal slide block 106. The other ends of the bag supply first connecting rod 1081 and the other ends of the bag supply second connecting rod 1083 are hinged together. The bag supply linear power device 1082 is hinged to the middle of the bag supply frame 101 and the bag supply first connecting rod 1081 to drive the first connecting rod to swing. The length of the bag supply first connecting rod 1081 is longer than the length of the bag supply second connecting rod 1083, which can amplify the stroke of the bag supply linear power device 1082, so that a cylinder with a smaller stroke can be used for driving.

[0078] like Figure 4 , Figures 8 to 10As shown, a bag feeding device 111 is also installed on the bag feeding frame 101. The bag feeding device 111 includes a bag feeding lifting power support 111 fixedly installed on the bag feeding frame 101. A bag feeding lifting power device 1112 is installed on the bag feeding lifting power support 111, which is also driven by a cylinder. A bag feeding connecting plate 1113 is provided below the bag feeding lifting power support 111. The bag feeding connecting plate 1113 is driven to lift by the bag feeding lifting power device 1112. A bag feeding longitudinal power support 1114 is fixedly installed below the bag feeding connecting plate 1113. A bag feeding longitudinal power support 1114 is fixedly installed on the bag feeding longitudinal power support 1114. The machine is equipped with a bag feeding longitudinal power device 1115, preferably a cylinder. A bag feeding longitudinal sliding frame 1116 is slidably mounted on the bag feeding connecting plate 1113. The bag feeding longitudinal sliding frame 1116 is driven by the bag feeding longitudinal power device 1115 to slide longitudinally between the suction station B and the bag supply station C. A bag feeding mounting frame 1117 is fixedly mounted below the bag feeding longitudinal sliding frame 1116. Several lifting suction cups 1118 for absorbing packaging bags are mounted on the bag feeding mounting frame 1117. The lifting suction cups 1118 are connected to the air extraction system. A support device 113 for supporting the bottom of the packaging bag is also mounted on the bag supply frame 101.

[0079] like Figure 9 and Figure 10 As shown, the bag feeding mounting frame 1117 includes a first bag feeding mounting frame 11171 and a second bag feeding mounting frame. The first bag feeding mounting frame 11171 and the second bag feeding mounting frame are respectively installed on the lateral sides of the bag feeding fixing frame. The first bag feeding mounting frame 11171 and the second bag feeding mounting frame are respectively provided with a bag feeding lateral strip hole 11173 to change the lateral fixed position of the first bag feeding mounting frame 11171 and the second bag feeding mounting frame. The first bag feeding mounting frame 11171 and the second bag feeding mounting frame are provided with a suction cup longitudinal strip hole 11172 for adjusting the position of the lifting suction cup 1118. The lifting suction cup 1118 can change its longitudinal position by being fixed by bolts constrained in the suction cup longitudinal strip hole, so that the position of the lifting suction cup 1118 is suitable for the suction requirements of packaging bags of different sizes. A bag feeding limit block 1119 is also fixed on the bag feeding mounting frame 1117 to limit the contact force between the lifting suction cup 1118 and the packaging bag. When the bag feeding limit block 1119 contacts the packaging bag, the lifting suction cup 1118 is compressed to its limit, thereby limiting the suction force of the lifting suction cup 1118.

[0080] like Figure 11As shown, the support device 113 includes a support swing arm 1131 hinged to the bag feeding frame 101. A support plate 1132 supporting the bottom of the packaging bag is fixedly installed at the free end of the support swing arm 1131. A support tilting connecting block 1134 is fixedly connected at the hinge of the support swing arm 1131. A support linear cylinder 1133 is hinged to the bag feeding frame 101. The guide rod of the support linear cylinder 1133 is hinged to the support tilting connecting block 1134. This support device 113 can better support the bottom of the packaging bag when the packaging bag is clamped and turned over by the first swing clamping device 1125 and the second swing clamping device 1126, avoiding the bottom of the packaging bag from collapsing and affecting the turning effect of the packaging bag, and also avoiding the bottom of the packaging bag from being hooked on other sharp parts and causing damage.

[0081] like Figure 4 , Figure 12 and Figure 13 As shown, the bag feeding frame 101 is also equipped with a bag opening and turning device 112 located at the bag feeding station C. The bag opening and turning device 112 includes a turning main shaft 1120 rotatably mounted on the bag feeding frame 101 and located above the bag feeding station C. A bag opening mounting seat 1121 is fixedly mounted in the middle of the turning main shaft 1120. A bag opening shaft 1122 is rotatably mounted on the bag opening mounting seat 1121. Bag opening hooks 1123 are mounted at both ends of the bag opening shaft 1122. The bag opening shaft 1122 is driven to rotate by a bag opening deflection adjustment device 1124. The bag opening deflection adjustment device 1124 is driven by a cylinder. The two ends of the flipping main shaft 1120 are also provided with a first swing clamping device 1125 and a second swing clamping device 1126 to tighten and clamp the two ends of the packaging bag. The flipping main shaft 1120 drives the rotating packaging bag to deflect from the bag feeding station C to the filling station D through the main deflection adjustment device 1127. The main deflection adjustment device 1127 is also preferably a cylinder. The bag feeding frame 101 is equipped with an opening mechanism 114 that sucks up the lower part of the bag mouth of the packaging bag and makes it open, located below the bag opening hook 1123.

[0082] The first swing clamping device 1125 and the second swing clamping device 1126 have the same structure. The first swing clamping device 1125 includes a first clamping mounting base 11253 fixedly mounted on the flipping spindle 1120. A first clamping link 11251 is swingably mounted on the first clamping mounting base 11253. The swing center of the first clamping link 11251 is perpendicular to the axis of the flipping spindle 1120. The free end of the first clamping link 11251 is provided with a first bag clamping claw 1129 that can be opened or closed. The first clamping link 11251 is driven to reciprocate and swing by a first bag clamping linear power device 11252 to make the first bag clamping claw 1129 approach or move away from the two sides of the bag opening of the packaging bag. The flipping spindle 1120 is provided with a bag clamping limiting structure 1128 that limits the swing range of the first clamping link 11251. The first bag clamping claw 1129 is driven to open and close to clamp or release the two sides of the bag opening of the packaging bag by a first bag clamping opening and closing power device. The bag clamping and limiting structure 1128 includes a bag clamping fixing rod 11281 fixedly installed on the flipping main shaft 1120. A bag clamping and limiting top block 11282 that abuts against the outside of the first clamping connecting rod 11251 is threaded on the bag clamping fixing rod 11281. A corresponding bag clamping and limiting structure 1128 is also provided on one side of the second swing clamping device 1126.

[0083] like Figure 13 As shown, the opening mechanism 114 includes an opening lifting frame 1141 that is slidably mounted on the bag feeding frame 101. An opening auxiliary suction plate 1142 is fixedly mounted on the opening lifting frame 1141, and an opening suction cup 1143 is also mounted on the opening lifting frame 1141. The opening auxiliary suction plate 1142 is provided with an exposure hole to facilitate the exposure of the opening suction cup 1143. An opening lifting power device 1144 for driving the opening lifting frame 1141 to rise and fall is mounted on the bag feeding frame 101. This opening mechanism 114 can easily open the bag mouth of the packaging bag, making it easy for the bag opening hook 1123 to hook open the bag mouth. In this way, the flipped packaging bag can be better and more accurately placed on the bag clamping support plate 752, thereby ensuring a reliable transition of the packaging bag between the flipping step and the bag filling clamping step.

[0084] like Figures 14 to 17 As shown, the automatic filling machine 2 includes a filling frame, a hopper 21 fixed on the filling frame, a filling outlet pipe 22 at the bottom of the hopper 21 at the filling station D, and a screw conveyor 23 installed on the filling frame to deliver the powder in the hopper 21; its specific structure is the same as the structure and scheme of the screw conveyor 23 in the invention publication document with patent application number 202110538112.2.

[0085] A weighing and lifting device 7 is also installed at filling station D. The weighing device includes a weighing frame 71, on which a column 72 is mounted. A weighing platform 73 is vertically and slidably mounted on the column 72. The weighing platform 73 is driven vertically by a lifting power device. A weighing sensor 74 is fixedly mounted on the weighing platform 73, and a bag-clamping device 75 is suspended from the weighing sensor 74 for clamping the packaging bags delivered by the bag-opening and turning device 112. Figures 15 to 17 As shown, the bag clamping device 75 includes a bag clamping sleeve 751 suspended on the weighing sensor 74. Both the upper and lower ends of the bag clamping sleeve 751 are open. The weighing platform 73 is provided with a filling operation port corresponding to the upper opening of the bag clamping sleeve 751. The bag clamping sleeve 751 is movably fitted outside the filling outlet pipe 22. Two opposing bag clamping support plates 752 are swaying on both sides of the lower opening of the bag clamping sleeve 751. The bag opening and flipping device 112 clamps... The packaging bag is flipped so that the bag opening is covered by the bag clamping support plate 752; the bag clamping cover 751 is equipped with a support plate deflection power device 753 that drives the bag clamping support plate 752 to open and close; each bag clamping support plate 752 is also equipped with a clamping mechanism 754 for cooperating with the bag clamping support plate 752 to clamp the bag opening; and two expansion clamping mechanisms 755 are also installed on the left and right sides of the bag clamping cover 751 to expand or tighten the bag opening.

[0086] The expansion and contraction clamping mechanism 755 includes a first parallel link 7551 and a second parallel link 7552 that are parallel to each other. The upper ends of the first parallel link 7551 and the second parallel link 7552 are both hinged to the upper end of the bag clamping sleeve 751. The lower ends of the first parallel link 7551 and the second parallel link 7552 are fixed with pneumatic grippers 7554 for clamping the side of the bag opening. The bag clamping sleeve 751 is provided with an expansion and contraction swing force device 7553 that drives the first parallel link 7551 or the second parallel link 7552 to deflect. When the packaging bag is flipped and sent to the filling station D, it is directly clamped by the pneumatic grippers 7554, so that the bag opening hook 1123 and the first bag clamping claw 1129 can be reset.

[0087] The clamping mechanism 754 includes a clamping arm 7541 that is mounted on the bag clamping support plate 752. The lower end of the clamping arm 7541 is provided with a clamping block 7542 that contacts the surface of the bag clamping support plate 752. The bag clamping support plate 752 is provided with a clamping arm deflection power device 7543 that drives the clamping arm 7541 to deflect. Both the expansion and contraction deflection power device 7553 and the clamping arm deflection power device 7543 are driven by cylinders.

[0088] A front conveying device 3 is located downstream of the bag clamping device 75 for conveying upright packaging bags. The front conveying device 3 extends from the filling station D to the heat sealing station E.

[0089] The filling machine frame is also equipped with a bag transfer device 4 that moves the bag opening of the packaging bag at the filling station D to the heat sealing station E; the bag transfer device 4, together with the front conveying device 3, transports the filled packaging bag to the heat sealing station E.

[0090] In this embodiment, the bag transfer device 4 can tighten and straighten the bag opening, so that there is no need to straighten the bag opening when it enters the vacuum sealing machine 5.

[0091] like Figure 18 As shown, the bag transfer device 4 includes a bag transfer bracket 41 installed on the filling machine frame. A bag transfer longitudinal beam 42 is provided on the bag transfer bracket 41. A bag transfer slide 43 is longitudinally and horizontally slidably installed on the bag transfer longitudinal beam 42. A longitudinal bag transfer power device is installed on the bag transfer bracket 41 to drive the bag transfer slide 43 to slide longitudinally between the filling station D and the heat sealing station E. The longitudinal bag transfer power device uses a motor and chain or synchronous belt drive to realize the sliding of the bag transfer slide 43.

[0092] The bag transfer slide 43 is horizontally slidably mounted with a first bag transfer clamping mechanism 44 and a second bag transfer clamping mechanism 45 having the same structure. The bag transfer slide 43 is also mounted with a first telescopic power device 46 and a second telescopic power device 47 that drive the first bag transfer clamping mechanism 44 and the second bag transfer clamping mechanism 45 to slide horizontally. The first telescopic power device 46 and the second telescopic power device 47 are preferably cylinders.

[0093] The first bag-moving clamping mechanism 44 includes a first transverse slide 441, which is connected to the power end of the first telescopic power device 46. A first bag-moving clamping seat 4433 is movably mounted on the first transverse slide 441. A first pneumatic clamp 442 for clamping the side of the packaging bag opening is mounted on the first bag-moving clamping seat 4433. A first bag-moving feed power device 443 for driving the first bag-moving clamping seat 4433 is mounted on the first transverse slide 441. The first bag-moving feed power device 443 drives the first bag-moving clamping seat 4433 to move closer to or away from the side of the packaging bag. In this embodiment, the first bag-moving clamp 4433 is horizontally oscillatingly mounted on the first transverse slide 441 via two parallel first bag-moving connecting rods 4431. The first bag-moving feeding power device 443 includes a first bag-moving feeding cylinder 4432 hinged to the first transverse slide 441. The piston rod of the first bag-moving feeding cylinder 4432 is hinged to the bracket of the first bag-moving clamp 4433. Therefore, when the first bag-moving feeding cylinder 4432 extends or retracts, it will cause the first bag-moving clamp 4433 to sway, thereby approaching or moving away from the side of the packaging bag to complete the clamping or moving away from the side of the packaging bag. After clamping the side of the packaging bag, it can also simultaneously sway in the opposite direction to both sides, thereby quickly straightening the bag opening. This completes the bag opening adjustment and improves the sealing effect during sealing.

[0094] After filling, the packaging bag descends and is supported by the front conveying device 3. At this time, the first transverse slide 441 is driven by the first telescopic power device 46 to move laterally, so that the first bag transfer clamping mechanism 44 and the second bag transfer clamping mechanism 45 are respectively on both sides of the packaging bag. Then, the first bag transfer clamping seat 4433 moves closer to the side of the packaging bag and uses the first pneumatic clamp 442 to clamp the side of the packaging bag. Similarly, the second bag transfer clamping mechanism 45 clamps the other side of the packaging bag. Then, the expansion clamping mechanism 755 and the pressure clamping block 7542 release the packaging bag and rise, so that the bag opening of the packaging bag is separated from the bag clamping support plate 752. The bag transfer slide 43 is driven by the longitudinal bag transfer power device to move from the filling station D to the heat sealing station. Since the side of the bag opening is always clamped and taut during the entire bag transfer process, the bag opening will not collapse. In the later sealing process, there is no need to sort the bag opening, thereby improving efficiency and ensuring sealing quality.

[0095] Figures 19 to 25 A vacuum sealing machine 5 is illustrated. The vacuum sealing machine 5 is set at the heat sealing station E for vacuuming and heat sealing packaging bags. The vacuum sealing machine 5 includes a sealing frame and a fixed vertical plate 51 fixed on the sealing frame. A sealing mounting base plate 52 is installed on the fixed vertical plate 51. In this embodiment, the sealing mounting base plate 52 is vertically slidably installed on the fixed vertical plate 51 and is driven by a heat sealing lifting power device 512 to adjust the sealing position.

[0096] A sealing mounting base 52 is equipped with a sealing fixing bracket 53. A vacuum extraction pipe 54, inserted into the packaging bag for vacuuming, is vertically mounted on the sealing mounting base 52. The vacuum extraction pipe 54 is driven to rise and fall by a vacuum lifting power device 55. Sealing fixing end plates 56 are provided at both longitudinal ends of the sealing fixing bracket 53. Below the sealing fixing end plates 56 are two mutually cooperating first heating sealing components 57 and second heating sealing components 58 that clamp the packaging bag for sealing. Both ends of the first heating sealing components 57 and second heating sealing components 58 are oscillatingly mounted on the sealing fixing end plates 56 via a heating parallel linkage mechanism. The sealing fixing bracket 53 is equipped with a first swing adjustment mechanism that allows the heating parallel linkage mechanism to swing. The first swing adjustment device 511 includes a first swing adjustment cylinder 5111, which is hinged to a heating swing drive arm 5112. The heating swing drive arm 5112 is fixed on a first rotating shaft 571. An auxiliary clamping device 59 is also installed below the sealing fixed end plate 56. The auxiliary clamping device 59 is located below the first heating sealing assembly 57 and the second heating sealing assembly 58. The auxiliary clamping device 59 includes two mutually cooperating auxiliary clamping blocks 591 and 592 for assisting in clamping and sealing the bag opening of the packaging bag. The first auxiliary clamping block 591 and the second auxiliary clamping block 592 are both provided with a lower strip groove 593 to avoid the air extraction pipe 54.Both ends of the first auxiliary clamping block 591 and the second auxiliary clamping block 592 are oscillatingly mounted on the sealing fixing end plate 56 via a clamping parallel linkage mechanism. The sealing fixing bracket 53 is provided with a second swing adjustment device 596 that causes the clamping parallel linkage mechanism to swing. The sealing fixing bracket 53 is provided with a pre-opening device 510 for opening the bag mouth of the packaging bag above the first heating sealing assembly 57 and the second heating sealing assembly 58. The packaging bag containing the material is longitudinally conveyed to the first heating sealing assembly 57 and the second heating sealing assembly 58 by the bag transfer device 4. Then, the pre-opening device 510 opens the bag mouth of the packaging bag, and the suction lifting power device 55 drives the suction pipe 54 to descend. The suction pipe 54 extends into the packaging bag. Then, the second swing adjustment device 596 controls the swing of the clamping parallel linkage mechanism. The movement causes the first auxiliary clamping block 591 and the second auxiliary clamping block 592 of the auxiliary clamping device 59 to swing and contact, sealing the bag opening. The suction pipe 54 begins to draw air. After suction is complete, the suction lifting power device 55 drives the suction pipe 54 to rise. Then, the first swing adjustment device 511 controls the heating parallel linkage mechanism to swing, causing the first heating sealing assembly 57 and the second heating sealing assembly 58 to clamp the bag opening and seal it. After sealing, the first auxiliary clamping block 591 and the second auxiliary clamping block 592 open through the clamping parallel linkage mechanism, and the first heating sealing assembly 57 and the second heating sealing assembly 58 also open. The conveying device 6 then delivers the sealed packaging bag. This vacuum sealing machine 5 can automatically and accurately vacuum and seal packaging bags containing materials, with a short vacuuming time and a compact structure, improving efficiency. A cooling pipe 513 is installed downstream of the sealing fixing bracket 53 to blow air onto the sealing area for rapid cooling and shaping.

[0097] like Figure 23As shown, a first rotating shaft 571 and a second rotating shaft 581 are rotatably mounted between two sealing fixed end plates 56. The heating parallel linkage mechanism corresponding to the first heating sealing assembly 57 includes a first main connecting rod 572 and a first auxiliary connecting rod 573 that are parallel to each other. The heating parallel linkage mechanism corresponding to the second heating sealing assembly 58 includes a second main connecting rod 582 and a second auxiliary connecting rod 583 that are parallel to each other. The upper end of the first main connecting rod 572 is fixedly mounted on the first rotating shaft 571. The upper end of the first auxiliary connecting rod 573 is hinged to the sealing fixed end plate 56. The upper end of the second main connecting rod 582 is fixedly mounted on the second rotating shaft 581. The upper end of the second auxiliary connecting rod 583... The first heating sealing assembly 57 is hinged to the sealing fixing end plate 56. Both ends of the first heating sealing assembly 57 are respectively fixed to the lower ends of the corresponding first main connecting rod 572 and first auxiliary connecting rod 573. Both ends of the second heating sealing assembly 58 are respectively fixed to the lower ends of the corresponding second main connecting rod 582 and second auxiliary connecting rod 583. A first heating synchronization connecting block 574 and a second heating synchronization connecting block 584 are respectively fixed to the first rotating shaft 571 and the second rotating shaft 581. A heating synchronization rod 575 is hinged between the first heating synchronization connecting block 574 and the second heating synchronization connecting block 584 to synchronize the opening and closing of the first heating sealing assembly 57 and the second heating sealing assembly 58. It is also connected to the second auxiliary clamping block 592. The corresponding clamping parallel linkage mechanism includes a third main linkage 597 and a third auxiliary linkage 598 that are parallel to each other. The clamping parallel linkage mechanism corresponding to the second auxiliary clamping block 592 includes a fourth main linkage 594 and a fourth auxiliary linkage 595 that are parallel to each other. The upper end of the third main linkage 597 is rotatably mounted on the first rotating shaft 571. The upper end of the third auxiliary linkage 598 is hinged to the sealing fixed end plate 56. The upper end of the fourth main linkage 594 is rotatably mounted on the second rotating shaft 581. The upper end of the fourth auxiliary linkage 595 is hinged to the sealing fixed end plate 56. The two ends of the second auxiliary clamping block 592 are respectively fixed to the corresponding third main linkage 597 and the third auxiliary linkage 598. The lower end of the connecting rod 598 and the two ends of the second auxiliary clamping block 592 are respectively fixed to the lower ends of the corresponding fourth main connecting rod 594 and fourth auxiliary connecting rod 595. The first clamping synchronous connecting block 5910 and the second clamping synchronous connecting block 599 are respectively rotatably mounted on the first rotating shaft 571 and the second rotating shaft 581. The first clamping synchronous connecting block 5910 and the second clamping synchronous connecting block 599 are respectively mounted on the third main connecting rod 597 and the fourth main connecting rod 594. The first clamping synchronous connecting block 5910 and the second clamping synchronous connecting block 599 are hinged together with a clamping synchronous rod 5911 that enables the second auxiliary clamping block 592 and the second auxiliary clamping block 592 on the auxiliary clamping assembly to open and close synchronously.When it is necessary to drive the first main connecting rod 572 to swing, simply rotate the first rotating shaft 571 to drive the first main connecting rod 572 to swing. Then, the first heating synchronization connecting block 574 drives the second heating synchronization connecting block 584 to rotate via the heating synchronization rod 575, thereby causing the second main connecting rod 582 to swing. The corresponding first auxiliary connecting rod 573 and second auxiliary connecting rod 583 also swing, thus synchronously causing the first heating sealing assembly 57 and the second heating sealing assembly 58 to swing and clamp the seal, completing the clamping. In this way, only driving the first main connecting rod 572 or the second main connecting rod 582 to swing can cause the first heating sealing to be completed. Component 57 and the second heating and sealing component 58 swing simultaneously to improve efficiency. The auxiliary clamping component works in the same way. The third main connecting rod 597 is rotatably mounted on the first rotating shaft 571. Therefore, when the first rotating shaft 571 rotates, the third main connecting rod 597 will not swing, and the fourth main connecting rod 594 will not swing due to the rotation of the second rotating shaft 581. In use, the swing of the third main connecting rod 597 drives the first clamping synchronous connecting block 5910 to swing. Through the clamping synchronous rod 5911, the second clamping synchronous connecting block 599 can be driven to swing, and the fourth main connecting rod 594 will swing accordingly to form synchronous swing.

[0098] The first heating and sealing assembly 57 and the second heating and sealing assembly 58 have the same structure. The first heating and sealing assembly 57 includes a sealing frame 576 hinged to the lower end of the first auxiliary connecting rod 573 and the first main connecting rod 572. Two take-up rollers 577 are installed on the sealing frame 576, and polytetrafluoroethylene cloth 578 is wound between the two take-up rollers 577. The sealing frame 576 is provided with a sealing block 579 that contacts the packaging bag. A heating device is provided on the sealing block 579. The polytetrafluoroethylene cloth 578 covers the sealing block 579. Since the heating device will directly contact the packaging bag after heating, the temperature will be too high, causing the material to melt and affecting the sealing. The polytetrafluoroethylene cloth 578 can effectively insulate heat and ensure a certain temperature for sealing. In addition, the take-up rollers 577 pull the polytetrafluoroethylene cloth 578 tight, so that the polytetrafluoroethylene cloth 578 is tightly attached to the sealing block 579, ensuring the sealing quality.

[0099] The pre-opening device 510 includes two opening brackets fixedly installed on the sealing bracket 53. Each opening bracket has a suction cup mounting strip 5101 slidably mounted laterally. Several pre-opening suction cups 5102 that contact the packaging bag are arranged longitudinally on the suction cup mounting strip 5101. Each pre-opening suction cup 5102 mounting strip is also provided with a limiting block to limit the pre-opening suction cup 5102. The limiting block is provided with an upper strip groove 5104 corresponding to the lower strip groove 593. The opening bracket is provided with a third telescopic power device 5103 to drive the suction cup mounting strip 5101 to slide laterally. The pre-opening suction cup 5102 is connected to the air extraction system. The pre-opening device 510 can pre-open the opening of the already clamped packaging bag, which facilitates the insertion of the air extraction tube 54.

[0100] The rear conveying device 6 is used to remove the sealed packaging bag.

[0101] Both the front conveyor 3 and the rear conveyor 6 can be conveyed using belt conveyors or roller conveyors.

[0102] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and alterations made to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A fully automatic method for packaging powders, characterized in that: The packaging method uses a full-automatic powder packaging machine, comprising: An automatic bag feeder, which comprises a bag feeder frame, a bag supporting plate arranged on the bag feeder frame, a transverse limiting structure for transversely limiting the packaging bag arranged on the bag supporting plate, a longitudinal positioning structure for longitudinally positioning the packaging bag arranged on the bag supporting plate, a placement area for placing the packaging bag formed by the transverse limiting structure and the longitudinal positioning structure, a replenishment station and a suction station arranged on the placement area, a longitudinally movable bag feeding longitudinal slide arranged on the bag feeder frame, a bag feeding push rod installed on the bag feeding longitudinal slide in a lifting manner, at least two strip-shaped holes extending from the replenishment station to the suction station arranged on the bag supporting plate, the bag feeding push rod penetrating through the bag supporting plate and being constrained in the strip-shaped holes, the bag feeding push rod driving the bag feeding longitudinal slide to reciprocate between the replenishment station and the suction station through a bag feeding longitudinal sliding driving device, and the bag feeding push rod being driven to lift by a bag feeding lifting power device so that the bag feeding push rod is higher or lower than the supporting surface of the bag supporting plate; A bag feeding device is further installed on the bag feeder frame, the bag feeding device comprising a bag feeding lifting power support seat fixedly installed on the bag feeder frame, a bag feeding lifting power device installed on the bag feeding lifting power support seat, a bag feeding connecting plate arranged below the bag feeding lifting power support seat, the bag feeding connecting plate being driven to lift by the bag feeding lifting power device, a bag feeding longitudinal power support seat fixedly installed below the bag feeding connecting plate, a bag feeding longitudinal power device fixedly installed on the bag feeding longitudinal power support seat, a bag feeding longitudinal sliding frame longitudinally slidably installed on the bag feeding connecting plate, the bag feeding longitudinal sliding frame being driven to longitudinally slide between the suction station and the bag feeding station by the bag feeding longitudinal power device, a bag feeding mounting frame fixedly installed below the bag feeding longitudinal sliding frame, and a plurality of lifting suction cups for sucking the packaging bag installed on the bag feeding mounting frame, the lifting suction cups being communicated with a suction system, and a supporting device for supporting the bottom of the packaging bag further installed on the bag feeder frame; An opening and overturning device is further arranged on the bag feeder frame at the bag feeding station, the opening and overturning device comprising an overturning main shaft rotatably installed on the bag feeder frame above the bag feeding station, an opening mounting seat fixedly installed in the middle of the overturning main shaft, an opening shaft rotatably installed on the opening mounting seat, opening hooks installed at both ends of the opening shaft, the opening shaft being driven to rotate by an opening deflection adjusting device, a first swing clamping device and a second swing clamping device arranged at both ends of the overturning main shaft for clamping both ends of the packaging bag, the overturning main shaft being driven to rotate the packaging bag from the bag feeding station to the filling station by a main deflection adjusting device, and an opening mechanism arranged below the opening hooks on the bag feeder frame for sucking the lower part of the bag opening of the packaging bag to open the bag opening. The automatic filling machine comprises a filling rack, a hopper fixed on the filling rack, a filling discharge pipe at the bottom of the hopper at a filling station, a screw conveying device for conveying powder in the hopper, a weighing lifting device at the filling station, a weighing platform driven vertically by a lifting power device, a weighing sensor fixed on the weighing platform, a bag clamping device for clamping a packaging bag sent by the bag opening and overturning device, a bag clamping sleeve hung on the weighing sensor, openings at the upper end and the lower end of the bag clamping sleeve, a filling operation opening corresponding to the upper opening of the bag clamping sleeve, the bag clamping sleeve movably sleeved on the outside of the filling discharge pipe, two oppositely arranged bag clamping support plates swingingly installed at the front and back of the lower end opening of the bag clamping sleeve, the bag opening and overturning device clamping and overturning the packaging bag to make the bag opening of the packaging bag sleeved on the outside of the bag clamping support plate, a support plate deflection power device for driving the bag clamping support plate to open and close and deflect, a pressure clamping mechanism for cooperating with the bag clamping support plate to press and clamp the bag opening of the packaging bag, and two bag opening side edge expansion or bag opening tensioning contraction clamping mechanisms swingingly installed on the left and right sides of the bag clamping sleeve. A front conveying device is arranged downstream of the bag clamping device and is used for conveying the upright packaging bag. A bag moving device is arranged on the filling rack and is used for moving the bag opening of the packaging bag on the filling station to the heat sealing station. A vacuum sealer is arranged at the heat sealing station and is used for vacuumizing and heat sealing the packaging bag. A rear conveying device is used for moving the sealed packaging bag out. The method comprises the following steps: S1, placing a stack of packaging bags in a stacking area at a material supplementing station; S2, horizontally pushing the stack of packaging bags to a suction station; S3, using negative pressure suction to suction and horizontally move the uppermost packaging bag to a bag supplying station, and supporting the bottom of the packaging bag by a supporting device to keep the packaging bag in a horizontal state; S4, opening the bag opening of the packaging bag and using an opening hook to hook the bag opening to keep the bag opening open; S5, using an opening and overturning device to clamp the bag opening side edges of the packaging bag from both sides and overturn the packaging bag by 90°, and the opening hook overturns with the packaging bag to keep hooking the bag opening during deflection, and the bag opening of the deflected packaging bag faces upwards and is clamped open at the filling station; S6, resetting the supporting device and the opening hook with the opening and overturning device, and filling powder into the packaging bag from top to bottom; S7, stopping filling when the weight of the powder in the packaging bag reaches a required value; S8, clamping the bag opening of the packaging bag to horizontally move the packaging bag to the heat sealing station; S9, pre-opening the bag opening of the packaging bag, and inserting an air suction pipe into the bag opening of the packaging bag; S10, clamping the bag opening of the packaging bag, and avoiding the air suction pipe during clamping. S11, start pumping, use the pumping pipe to pump out the gas in the packaging bag; S12, after the pumping pipe is pulled out, the bag opening of the packaging bag is clamped and heat sealed; S13, the packaging bag after sealing is moved out.

2. The fully automatic powder packaging method according to claim 1, characterized in that: In step S2, the specific way of pushing the whole stack of packaging bags horizontally to the suction station is: using the bag supply push rod to push the packaging bags horizontally, using the longitudinal positioning plate to position the packaging bags on the suction station; the bag supply push rod remains in this position and continuously limits the packaging bags with the longitudinal positioning plate; when the last packaging bag is sucked, the bag supply push rod is lowered and horizontally reset to move to the edge of the replenishment station, and the bag supply push rod is raised again to push the stack of packaging bags previously placed in the replenishment station horizontally to the suction station.

3. The fully automatic powder packaging method according to claim 2, characterized in that: In step S4, the way of opening the bag opening of the packaging bag is: using the opening suction cup to rise and suck the bag opening of the packaging bag to open the bag opening; and the bag opening is always opened by the opening hook claw which is deflected from top to bottom to hook the bag opening of the packaging bag; when it needs to be reset, the opening hook claw is reversely deflected from bottom to top to be detached from the bag opening of the packaging bag.

4. The fully automatic powder packaging method according to claim 3, characterized in that: In step S5, during the process of clamping the side edges of the bag opening of the packaging bag from both sides and turning the packaging bag 90° by the bag opening turning device, the side edges of the bag opening of the packaging bag are pulled apart to be tensioned, so that the bag opening of the packaging bag is tightly attached to the opening hook claw.

5. The fully automatic powder packaging method according to claim 4, characterized in that: In step S6, the way of filling the powder into the packaging bag is: the packaging bag is clamped by the bag clamping device suspended on the weighing sensor, the powder is continuously discharged from the filling discharge pipe, the packaging bag is clamped and raised when discharging to make the filling discharge pipe close to the bottom of the packaging bag, and the packaging bag is gradually lowered during the filling process, so that the height between the lower end of the filling discharge pipe and the powder in the packaging bag is always within a specified range; when the weighing sensor shows that the filling weight meets the standard, the packaging bag is lowered to make the bottom of the packaging bag impact the object below at least twice.

6. The fully automatic powder packaging method according to claim 5, characterized in that: In step S8, the specific way of clamping the bag opening of the packaging bag to move the packaging bag horizontally to the heat sealing station is: after filling is completed, the first bag moving clamping mechanism and the second bag moving clamping mechanism horizontally extend to correspond to the side edges of the bag opening of the packaging bag, and then the first bag moving clamping mechanism and the second bag moving clamping mechanism approach the bag opening of the packaging bag and clamp the side edges of the packaging bag; the bag clamping device releases the packaging bag and rises to separate from the bag opening of the packaging bag, the packaging bag is linearly conveyed on the front conveying device, and during the conveying process, the first bag moving clamping mechanism and the second bag moving clamping mechanism always clamp the bag opening of the packaging bag and straighten the bag opening.

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