Bag transfer mechanism of a packaging machine and its usage method

Abstract

The present invention provides a bag transferring mechanism for a packaging machine, which includes a swing arm bag clamping mechanism, a flipping bag clamping assembly, a bag receiving mechanism and a conveying mechanism. The bag receiving mechanism is located at the input end of the conveying mechanism. The flipping bag clamping assembly is located above the conveying mechanism and is installed beside the swing arm bag clamping mechanism. The flipping bag clamping assembly includes a flipping assembly, and a driving component is installed at the lower part of the flipping assembly. The design of the present invention is reasonable, the structure is simple, time and labor are saved, it is convenient to use, the work efficiency is improved, and it has broad application prospects.

Description

Technical Field

[0001] The present invention relates to a bag transferring mechanism of a packaging machine and a using method thereof. Background Art

[0002] When the material packaging bag in the previous process is filled with materials, since the receiving flat plate of the flipping and bag clamping assembly for transferring the material packaging bag in the next process needs to receive materials in an inclined state, the present case is thus generated to cooperate with the flipping and bag clamping assembly to realize the swinging and bag clamping of the material packaging bag. At the same time, the heat sealing assembly of the traditional heat sealing structure cannot be lifted or lowered, and the bag clamping assembly needs to clamp the bag mouth and move upward to contact the heat sealing assembly for heat sealing. As Figure 21 shown, when the specification of the material packaging bag is smaller, the lifting height is higher, the inclination angle of the material packaging bag in the sealed state is larger, and the pulling force on the bag mouth is also larger, which is extremely likely to cause the deformation of the material packaging bag and the failure of heat sealing; at the same time, after the material packaging bag is filled with materials and sealed, the flipping and bag clamping assembly will push the packaged material packaging bag onto the conveying mechanism and convey it to the next process. Since there is a certain distance between the flipping and bag clamping device and the conveying mechanism below, if the packaged material bag directly falls onto the conveying mechanism, the impact of the falling of the material packaging bag may cause damage to the material packaging bag, which is inconvenient to use and affects the packaging efficiency. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a bag transferring mechanism of a packaging machine and a using method thereof.

[0004] The present invention is composed of a swing arm bag clamping mechanism, a flipping and bag clamping assembly, a bag receiving mechanism and a conveying mechanism. The bag receiving mechanism is located at the input end of the conveying mechanism. The flipping and bag clamping assembly is located above the conveying mechanism. The flipping and bag clamping assembly is installed beside the swing arm bag clamping mechanism. The flipping and bag clamping assembly includes a flipping assembly, and a driving component is installed at the lower part of the flipping assembly.

[0005] Further, a vacuum chamber mechanism is arranged above the flipping and bag clamping assembly to descend and fit with the flipping and bag clamping assembly to realize vacuum shaping and sealing of the material packaging bag.

[0006] Further, the flipping assembly includes a machine table. Above the front end of the machine table, there is a heat-sealing assembly that can be lifted up and down. At the rear side of the heat-sealing assembly, there is an upper clamping assembly that can be lifted up and down. Below the heat-sealing assembly and the upper clamping assembly, there is a lower clamping assembly that can be lifted up and down. A flat plate for placing the packaging bag is arranged at the rear side of the upper clamping assembly and the lower clamping assembly. The upper clamping assembly, the lower clamping assembly, and the flat plate are all arranged above the machine table. The lower clamping assembly includes a lower clamping plate. On the upper end surface of the lower clamping plate, there is a silica gel strip for accommodating the heat-sealing plate. In the middle of the lower end surface of the lower clamping plate, it is threadedly and firmly connected to the cylinder rod of the first cylinder through a third connecting rod. At both ends of the lower end surface of the lower clamping plate, they are respectively connected to the guide holes on the machine table through a first guide shaft and a linear bearing for vertical guidance. The upper clamping assembly includes an upper clamping plate. Both ends of the upper clamping plate are respectively connected to the cylinder rods of the second cylinder through a first connecting rod. The upper clamping plate and the first connecting rod are connected through a pin shaft. The cylinder body of the second cylinder is installed on the machine table.

[0007] Further, the heat-sealing assembly includes a heat-sealing lifting fixed plate, a heat-sealing plate, and a second guide shaft. The heat-sealing plate is installed on the heat-sealing lifting fixed plate through a heat-insulating block. On the heat-sealing lifting fixed plate, there is a third cylinder for driving the heat-sealing plate to move up and down. The bottom end of the second guide shaft passes through the machine table and the lower clamping plate from bottom to top and then connects to the heat-sealing plate. On the heat-sealing plate, there are heating rods and thermocouples. The driving component includes a fixed plate. One end of the machine table far from the heat-sealing assembly is movably connected to one side of the fixed plate through a connecting rod assembly. The middle part of the lower side of the machine table is movably connected to the other side of the fixed plate through a crank assembly. On the fixed plate, there is a fourth cylinder, and the fourth cylinder drives the crank assembly to rotate.

[0008] Further, the connecting rod assembly includes fourth connecting rods symmetrically arranged on the left and right sides. Both ends of the fourth connecting rod are respectively hinged to the fixed plate and the machine table. The crank assembly includes crank rods symmetrically arranged on the left and right sides. Both ends of the crank rod are respectively hinged to the fixed plate and the machine table. The two crank rods are connected through a crank fixing rod. The fourth cylinder is hinged to the fixed plate, and the crank fixing rod is hinged to the driving part of the fourth cylinder.

[0009] Further, the swing-arm bag-clamping mechanism includes a frame. On the frame, there is a swing-arm assembly that is driven to swing by a first driving mechanism. On the swing-arm assembly, there are two bag-clamping mouth assemblies symmetrically arranged. Between the lower sides of the two bag-clamping mouth assemblies, there is a bag-supporting component.

[0010] Further, the swing arm assembly includes a left swing arm and a right swing arm. The left swing arm and the right swing arm are integrally fixed together by a connecting crank. Clamping pocket components are symmetrically arranged at the tops of the left swing arm and the right swing arm. The bag supporting component is located between the left swing arm and the right swing arm. Each clamping pocket component includes an electric cylinder installed at the top of the swing arm assembly through a clamping pocket fixing plate. A finger cylinder is installed on the moving block of the electric cylinder through a cylinder mounting plate. The clamping fingers of the finger cylinder are used for opening and closing the clamping pocket. The bag supporting component includes a supporting plate. A vertical guiding mechanism is arranged between the supporting plate and the swing arm assembly. The supporting plate is driven to lift and lower by a second driving mechanism. The first driving mechanism includes a crank driven to rotate by a motor. The other end of the crank is hinged to a connecting rod. The other end of the connecting rod is hinged to the swing arm assembly. The bottom end of the swing arm assembly is hinged to the frame through a rotating shaft.

[0011] Further, the vertical guiding mechanism includes a vertical guide shaft fixed to the swing arm assembly. A guide sleeve is coaxially sleeved on the vertical guide shaft. The guide sleeve is integrally fixed to the side end of the supporting plate. A linear bearing is arranged between the guide sleeve and the vertical guide shaft. The vertical guiding mechanism includes a vertical guide shaft fixed to the swing arm assembly. A guide sleeve is coaxially sleeved on the vertical guide shaft. The guide sleeve is integrally fixed to the side end of the supporting plate. A linear bearing is arranged between the guide sleeve and the vertical guide shaft.

[0012] Further, the second driving mechanism includes a lifting platform located beside the supporting plate. The lifting platform is driven to lift and lower by a third driving mechanism. Fixed pulleys are installed at the top and bottom of the side of the swing arm assembly. A steel wire rope is tied to the screw bolt screwed on the side end of the supporting plate. The other end of the steel wire rope winds upwards around the top fixed pulley, then extends downwards and winds around the bottom fixed pulley, and finally extends upwards again and is tied to the screw bolt screwed on the side end of the lifting platform. A tension spring is also fixed to the screw bolt screwed on the side end of the supporting plate. The other end of the tension spring extends downwards and is fixed to the side of the swing arm assembly. When the swing arm assembly is upright, the lifting platform and the supporting plate are always at the same horizontal height and are connected.

[0013] Further, the bag receiving mechanism includes swing arms located on both sides of the input end of the conveying mechanism. A bag supporting fixing frame is arranged between the adjacent ends of the swing arms. A liftable bag receiving plate is arranged in the middle above the bag supporting fixing frame. A first air cylinder for driving the swing arm to rotate is arranged behind each swing arm. A second air cylinder is arranged below the bag receiving plate. The output shaft of the second air cylinder is connected to the lower part of the bag receiving plate. The second air cylinder is fixed outside the bag supporting fixing frame. A second rotating seat is arranged above the rear part of each swing arm. A spherical plain bearing is arranged at the output end of the first air cylinder. The spherical plain bearing is hinged to the second rotating seat. A third rotating seat is arranged below one end of each swing arm far away from the bag supporting fixing frame. A swing arm extension plate hinged to the third rotating seat is arranged at the lower part behind the swing arm. Cylinder fixing plates are arranged on both sides of the driving component. A cylinder rear seat is arranged behind the first air cylinder. A first rotating seat is arranged below the cylinder rear seat. The first rotating seat is hinged to the cylinder fixing plate. A baffle is arranged in front of the bag supporting fixing frame. A buffer pad is arranged on the upper surface of the bag receiving plate.

[0014] Further, a method for using the bag transfer mechanism of a packaging machine includes the following steps: (1) The fourth cylinder of the bag clamping assembly extends, and the machine platform is in an inclined state at a fixed angle. At the same time, the first cylinder and the second cylinder extend, and the upper clamping plate and the lower clamping plate rise to the highest position. A bag clamping reserved space is formed between the upper clamping plate and the lower clamping plate; (2) The material packaging bag is moved from the lifting platform to the middle of the swing arm assembly and supported by the support plate of the bag supporting assembly. Then, the bag clamping fingers of the bag clamping mouth assembly clamp the bag mouth of the material packaging bag. Next, the gear reduction motor is powered on and rotates to turn the crank to the next dead point. When reaching the dead point of the crank rocker mechanism, the gear reduction motor is powered off and stops rotating through the brake motor. The material packaging bag completes a certain angle of flipping. At the same time, since one end of the steel wire rope is fixed on the lifting platform, the wrap angle of the steel wire rope passing through the fixed pulley becomes smaller, causing the relative position of the support plate to drop a certain distance, but within the allowable range of the system. Then, after the material packaging bag moves away from the bag clamping mouth assembly through other mechanisms, the gear reduction motor is powered on and rotates to turn the crank to the next dead point, waiting for the next material packaging bag to arrive; (3) After the bag mouth of the material packaging bag is sent into the gap between the upper clamping plate and the lower clamping plate through the flipping of the swing arm bag clamping mechanism, the first cylinder and the second cylinder retract. Since the stroke of the second cylinder is greater than that of the first cylinder, then the upper bag clamping plate and the lower bag clamping plate close to clamp the bag mouth of the material packaging bag. Next, the finger cylinder on the bag clamping mouth assembly of the swing arm bag clamping mechanism opens, and the electric cylinder on the bag clamping mouth assembly drives the cylinder mounting plate to move outward so that the finger cylinder completely disengages from the bag mouth of the material packaging bag. Then, the gear reduction motor is powered on and rotates to turn the crank to the next dead point, making the swing arm assembly in a vertical state, waiting for the next material packaging bag to move into place; (4) After the finger cylinder completely disengages from the bag mouth of the material packaging bag, the fourth cylinder retracts, and the flipping bag clamping assembly is in the initial horizontal state of the machine platform. Then, the vacuum shaping and sealing process of the subsequent stage of the packaging machine is executed. At the same time, the fifth cylinder of the bag receiving mechanism retracts, causing the swing arm of the bag receiving mechanism to rotate upward by a certain angle. At the same time, the next material packaging bag is moved from the lifting platform to the middle of the swing arm assembly of the swing arm bag clamping mechanism, waiting for the next flipping and docking process; (5) After the vacuum chamber mechanism completes the vacuum shaping and sealing of the material packaging bag, the fourth cylinder extends, making the machine platform in an inclined state at a fixed angle. Then, the sixth cylinder of the bag receiving mechanism extends, causing the bag receiving plate to move upward and approach the lower part of the flipping bag clamping assembly. Next, the first cylinder on the flipping bag clamping assembly extends, causing the upper clamping plate of the flipping bag clamping assembly to loosen the bag mouth of the material packaging bag, allowing the material packaging bag to slide down to the support plate; at the same time, the second cylinder of the flipping bag clamping assembly extends, and the upper clamping plate and the lower clamping plate of the flipping bag clamping assembly rise to the highest position. A bag clamping reserved space is formed between the upper clamping plate and the lower clamping plate;(6) The fifth cylinder of the bag receiving mechanism extends, causing the swing arm of the bag receiving mechanism to rotate downward. The mouth end of the material packaging bag will break away from the flipping and bag clamping assembly and flip in the conveying direction of the conveying mechanism. The mouth of the material packaging bag comes into contact with the belt of the conveying mechanism. Then, the sixth cylinder of the bag receiving mechanism retracts, and the bag supporting plate descends, enabling the material packaging bag to increase the contact area with the conveying mechanism. Since the contact area between the material packaging bag and the conveying belt of the conveying mechanism becomes larger, the conveying belt is sufficient to drive the material packaging bag to move in the conveying direction of the conveying mechanism, completing one bag receiving process. (7) After the sixth cylinder of the bag receiving mechanism retracts, the next material packaging bag is flipped by the swing arm bag clamping mechanism and sent into the gap between the upper clamping plate and the lower clamping plate of the flipping and bag clamping assembly, and the above-mentioned working process is cycled as such.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The structure of the device is simple and reasonably designed. The material packaging bag is moved from the lifting platform to the middle of the swing arm assembly. The swing arm bag clamping mechanism flips the vertically placed material packaging bag at a certain angle to be inclined, and sends the mouth of the material packaging bag to the middle of the upper clamping plate and the lower clamping plate of the flipping and bag clamping assembly. Then, the flipping and bag clamping assembly flips the material packaging bag into a horizontal state. Next, the vacuum chamber mechanism descends and fits with the flipping and bag clamping assembly. After the vacuum shaping and sealing process, then the flipping and bag clamping assembly flips forward, the swing arm of the bag receiving mechanism rises, and the bag receiving plate rises. Then, the flipping and bag clamping assembly loosens the mouth of the material packaging bag, and the material packaging bag slides down by its own weight to the bag supporting plate. Then, the swing arm of the bag receiving mechanism descends and the bag receiving plate retracts. Finally, the material packaging bag topples by its own weight at the non-motor end of the conveying mechanism and is conveyed to the motor end via the conveying belt.

[0016] The above-mentioned swing arm bag clamping mechanism has a simple structure. After the material packaging bag is filled with materials, it is located on the bag supporting component, and the bag mouth is clamped by two symmetrical bag mouth clamping components. Since the receiving flat plate of the flipping and bag clamping assembly used for transferring the material packaging bag in the next process needs to receive materials at an inclination, the swing arm assembly can swing the material packaging bag to a certain angle, facilitating the flipping and bag clamping assembly in the next process to take away the material packaging bag. The heat sealing component, the upper clamping component, and the lower clamping component can all be lifted and lowered independently. The posture of the packaging bag can be clamped and heat sealed without inclination, which has strong adaptability to packaging bags of different specifications, has a small pulling force on the bag mouth, is not easy to deform, and improves the sealing success rate. The setting of the bag receiving mechanism reduces the distance between the material packaging bag and the bag receiving plate, reducing the impact of the falling of the material packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the working process of the embodiment of the present invention Figure 1 ;

[0018] Figure 2 Schematic diagram of the working process of the embodiment of the present invention Figure 2 ;

[0019] Figure 3 Schematic diagram of the operation of the embodiment of the present invention Figure 3 ;

[0020] Figure 4 Schematic diagram of the operation of the embodiment of the present invention Figure 4 ;

[0021] Figure 5 Schematic diagram of the operation of the embodiment of the present invention Figure 5 ;

[0022] Figure 6 Schematic diagram of the structure of the flipping bag clamping assembly and the swing arm bag clamping mechanism of the embodiment of the present invention;

[0023] Figure 7 Schematic diagram of the structure of the flipping assembly of the embodiment of the present invention Figure 1 ;

[0024] Figure 8 Schematic diagram of the structure of the flipping assembly of the embodiment of the present invention Figure 2 ;

[0025] Figure 9 Schematic diagram of the structure of the heat sealing plate of the embodiment of the present invention;

[0026] Figure 10 Schematic diagram of the usage state of the flipping bag clamping assembly of the embodiment of the present invention;

[0027] Figure 11 Stereogram of the flipping bag clamping assembly of the embodiment of the present invention;

[0028] Figure 12 Schematic diagram of the structure of the swing arm bag clamping mechanism of the embodiment of the present invention (not swung);

[0029] Figure 13 Schematic diagram of the structure of the swing arm bag clamping mechanism of the embodiment of the present invention (swung);

[0030] Figure 14 Schematic diagram of the winding of the steel wire rope of the embodiment of the present invention;

[0031] Figure 15 Schematic diagram of the structure of the bag clamping opening assembly of the embodiment of the present invention;

[0032] Figure 16 Stereogram of the bag receiving state of the bag receiving mechanism of the embodiment of the present invention;

[0033] Figure 17 Schematic diagram of the structure of the bag receiving mechanism of the embodiment of the present invention;

[0034] Figure 18 Schematic diagram of the bag receiving state of the bag receiving mechanism of the embodiment of the present invention;

[0035] Figure 19Schematic diagram of the bag dropping state of the bag receiving mechanism according to an embodiment of the present invention;

[0036] Figure 20 Schematic diagram of the conveying state of the bag receiving mechanism according to an embodiment of the present invention;

[0037] Figure 21 Schematic diagram of the prior art according to an embodiment of the present invention;

[0038] In the figure: 1 - flipping and bag clamping assembly; 101 - machine table; 102 - material packaging bag; 103 - flat plate; 104 - lower clamping plate; 105 - silica gel strip; 106 - third connecting rod; 107 - first cylinder; 108 - first guiding shaft; 109 - linear bearing; 110 - limit nut; 111 - limit plate; 112 - sealing cover; 113 - upper clamping plate; 114 - first connecting rod; 115 - second cylinder; 116 - heat sealing lifting fixing plate; 117 - heat sealing plate; 118 - second guiding shaft; 119 - third cylinder, 120 - heating rod; 121 - thermocouple; 122 - cylinder connecting seat; 123 - heat insulation block; 124 - second connecting rod; 125 - fixing plate; 126 - fourth connecting rod; 127 - crank rod; 128 - fixing seat; 129 - fourth cylinder;

[0039] 2 - swing arm and bag clamping mechanism; 201 - swing arm assembly; 202 - bag clamping opening assembly; 203 - bag supporting assembly; 204 - left swing arm; 205 - right swing arm; 206 - crank; 207 - bag clamping fixing plate; 208 - electric cylinder; 209 - cylinder mounting plate; 210 - finger cylinder; 211 - bag clamping finger; 212 - supporting plate; 213 - vertical guiding shaft; 214 - guiding sleeve; 215 - lifting platform; 216 - fixed pulley; 217 - screw; 218 - steel wire rope; 219 - tension spring; 220 - side plate; 221 - motor; 222 - crank; 223 - connecting rod; 224 - rotating shaft; 225 - side of the flipping and bag clamping assembly;

[0040] 3 - conveying mechanism;

[0041] 4 - bag receiving mechanism; 401 - swing arm; 402 - bag supporting fixing frame; 403 - bag receiving plate; 404 - fifth cylinder; 405 - cylinder rear seat; 406 - first rotating seat; 407 - second rotating seat; 408 - spherical plain bearing; 409 - third rotating seat; 410 - swing arm extension plate; 411 - sixth cylinder; 412 - buffer pad; 413 - baffle; 414 - upper supporting plate; 415 - lower supporting plate; 416 - position adjusting plate; 417 - cylinder fixing plate;

[0042] 5 - vacuum chamber mechanism. Detailed implementation manners

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0044] Example: As Figures 1 - 21 shown, in this embodiment, a bag transfer mechanism of a packaging machine is provided, which includes a swing arm bag clamping mechanism 2, a flipping bag clamping assembly 1, a bag receiving mechanism 4 and a conveying mechanism 3. The bag receiving mechanism is located at the input end of the conveying mechanism. The flipping bag clamping assembly is located above the conveying mechanism. The flipping bag clamping assembly is installed beside the swing arm bag clamping mechanism. The flipping bag clamping assembly includes a flipping assembly, and a driving component is installed at the lower part of the flipping assembly.

[0045] In this embodiment, a vacuum chamber mechanism 5 is arranged above the flipping bag clamping assembly to descend and fit with the flipping bag clamping assembly to realize vacuum shaping and sealing of the material packaging bag; the vacuum chamber mechanism is a prior art.

[0046] In this embodiment, the flipping assembly includes a machine table 101. Above the front end of the machine table, a heat sealing assembly that can be lifted up and down is provided. A clamping assembly that can be lifted up and down is arranged at the rear side of the heat sealing assembly. A lower clamping assembly that can be lifted up and down is arranged below the heat sealing assembly and the upper clamping assembly. A flat plate 103 for placing the packaging bag 102 is arranged at the rear sides of the upper clamping assembly and the lower clamping assembly. The upper clamping assembly, the lower clamping assembly and the flat plate are all arranged above the machine table.

[0047] In this embodiment, the lower clamping assembly includes a lower clamping plate 104. A silica gel strip 105 for accommodating the heat sealing plate is arranged on the upper end surface of the lower clamping plate. The middle part of the lower end surface of the lower clamping plate is threadedly and firmly connected to the cylinder rod of a first cylinder 107 through a third connecting rod 106. The two ends of the lower end surface of the lower clamping plate are respectively connected to the guide holes on the machine table through a first guide shaft 108 and a linear bearing 109 for vertical guiding; the upper clamping assembly includes an upper clamping plate 113. The two ends of the upper clamping plate are respectively connected to the cylinder rods of a second cylinder 115 through first connecting rods 114. The upper clamping plate and the first connecting rod are connected by a pin shaft; the cylinder body of the second cylinder is installed on the machine table;

[0048] A limit nut 110 and a limit plate 111 are sleeved on the third connecting rod from top to bottom. The limit nut is threadedly connected to the third connecting rod. The limit plate is firmly arranged on the machine table by screws; by adjusting the vertical height position of the limit nut, the stroke of the lower clamping plate can be controlled;

[0049] A part of the first guide shaft extending below the machine table is wrapped with a sealing cover 112, and a sealing ring is arranged on the sealing cover; the cylinder body of the first cylinder is installed on the machine table.

[0050] In this embodiment, the heat-sealing assembly includes a heat-sealing lifting and fixing plate 116, a heat-sealing plate 117, and a second guiding shaft 118. The heat-sealing plate is installed on the heat-sealing lifting and fixing plate through a heat-insulating block. A third air cylinder 119 for driving the heat-sealing plate to move up and down is provided on the heat-sealing lifting and fixing plate. The bottom ends of the second guiding shafts pass through the machine table and the lower clamping plate from bottom to top and then are connected to the heat-sealing plate. Heating rods 120 and thermocouples 121 are arranged on the heat-sealing plate;

[0051] The heat-sealing plate is provided with an air cylinder fixing part and a guiding shaft fixing part. The air cylinder fixing part is connected to the driving end of the third air cylinder, and the guiding shaft fixing part is connected to the top end of the second guiding shaft. The air cylinder fixing part includes an air cylinder connecting seat 122 and a heat-insulating block 123. The air cylinder connecting seat is arranged on the heat-sealing plate through the heat-insulating block. The air cylinder connecting seat is hinged to a second connecting rod 124 at the driving end of the third air cylinder. A spherical plain bearing is arranged at the driving end of the third air cylinder, and the spherical plain bearing and the air cylinder connecting seat are connected by a pin shaft; The cylinder body of the third air cylinder is installed on the machine table;

[0052] There are two third air cylinders, and two second guiding shafts are provided. The two second guiding shafts are located on both sides of the two third air cylinders to ensure the balance and stability of the entire heat-sealing assembly. Linear bearings are respectively provided at the parts where the machine table and the lower clamping plate are penetrated by the second guiding shafts;

[0053] The part of the second guiding shaft extending below the machine table is wrapped with a sealing cover, and a sealing ring is arranged on the sealing cover.

[0054] In this embodiment, the driving component includes a fixing plate 125, which can be directly screwed to the ground. One end of the machine table far from the heat-sealing assembly is movably connected to the front side of the fixing plate through a connecting rod assembly. The middle part of the lower side of the machine table is movably connected to the rear side of the fixing plate through a crank assembly. A fourth air cylinder 129 is installed on the fixing plate, and the fourth air cylinder drives the crank assembly to rotate.

[0055] In this embodiment, the connecting rod assembly includes fourth connecting rods 126 symmetrically arranged on the left and right sides. The two ends of the fourth connecting rods are respectively hinged to the fixing plate and the machine table. The crank assembly includes crank rods symmetrically arranged on the left and right sides. The two ends of the crank rods are respectively hinged to the fixing plate and the machine table. The two crank rods 127 are connected by a crank fixing rod. The two ends of the crank fixing rod are welded to the middle parts of the two crank rods. The fourth air cylinder is hinged to the fixing plate. A fixing seat 128 is arranged on the fixing plate. The cylinder sleeve of the fourth air cylinder is hinged to the fixing seat. The middle part of the crank fixing rod is hinged to the driving part of the fourth air cylinder. Through the movement of the driving part of the fourth air cylinder, the movement of the crank fixing rod is driven, and then the movement of the crank rod is driven to realize the swing of the machine table.

[0056] In this embodiment, after the system is started, the swing arm bag clamping mechanism moves the clamped packaging bag upward between the upper clamping plate and the lower clamping plate. The first cylinder retracts. Since the limiting nut and the limiting plate are in contact, the positioning of the lower clamping plate is completed. Then, when the packaging bag to be heat-sealed is placed on the flat plate, the second cylinder retracts, driving the upper clamping plate to descend, pressing the packaging bag to be heat-sealed against the lower clamping plate. Then, the swing arm bag clamping mechanism releases the clamped packaging bag. Next, the third cylinder retracts, driving the heat-sealing plate to descend until the silica gel strip contacts the heat-sealing plate. After maintaining a certain pressure for a certain period of time, the heat-sealing operation is completed. Then, the third cylinder extends, and the heat-sealing plate rises.

[0057] In this embodiment, the swing arm bag clamping mechanism includes a frame. A swing arm assembly 201 that is driven to swing by a first driving mechanism is hinged on the frame. Two bag clamping mouth assemblies 202 are symmetrically arranged on the swing arm assembly. A bag supporting assembly 203 is arranged between the lower parts of the two bag clamping mouth assemblies.

[0058] In this embodiment, the swing arm assembly includes a left swing arm 204 and a right swing arm 205. The left swing arm and the right swing arm are fixedly connected into one body through a connecting crank 206. Bag clamping mouth assemblies are symmetrically arranged at the tops of the left swing arm and the right swing arm. The bag supporting assembly is located between the left swing arm and the right swing arm. Each bag clamping mouth assembly includes an electric cylinder 208 installed at the top of the swing arm assembly through a bag clamping fixing plate 207. Finger cylinders 210 are installed on the moving blocks of the electric cylinders through cylinder mounting plates 209. The bag clamping fingers 211 of the finger cylinders are used for opening and closing to clamp the bag. The bag supporting assembly includes a support plate 212. A vertical guiding mechanism is arranged between the support plate and the swing arm assembly. The support plate is driven to lift and lower by a second driving mechanism. The first driving mechanism includes a crank 222 driven to rotate by a motor 221. The other end of the crank is hinged to a connecting rod 223. The other end of the connecting rod is hinged to the swing arm assembly. The bottom end of the swing arm assembly is hinged to the frame through a rotating shaft 224. The motor is a gear reduction motor, and the driving motor of the gear reduction motor is a brake motor.

[0059] In this embodiment, the vertical guiding mechanism includes a vertical guide shaft 213 fixedly connected to the swing arm assembly. A guide sleeve 214 is coaxially sleeved on the vertical guide shaft. The guide sleeve is fixedly connected to the end side of the support plate as a whole. A linear bearing is arranged between the guide sleeve and the vertical guide shaft. The vertical guiding mechanism includes a vertical guide shaft fixedly connected to the swing arm assembly. A guide sleeve is coaxially sleeved on the vertical guide shaft. The guide sleeve is fixedly connected to the end side of the support plate as a whole. A linear bearing is arranged between the guide sleeve and the vertical guide shaft. The support plate is provided with a side plate 220 that warps upward on the swing and unloading side of the swing arm assembly. When the swing arm assembly swings downward toward the side 225 of the flipping bag clamping assembly, the side plate supports the bottom of the material packaging bag to prevent it from slipping.

[0060] In this embodiment, the second driving mechanism includes a lifting platform 215 located beside the pallet. The lifting platform is driven to lift by a third driving mechanism. Fixed pulleys 216 are installed at both the top and bottom of the side of the swing arm assembly. A steel wire rope 218 is tied to a screw 217 screwed on the end side of the pallet. The other end of the steel wire rope winds upward around the top fixed pulley, then extends downward and winds around the bottom fixed pulley, and finally extends upward and is tied to a screw screwed on the end side of the lifting platform. A tension spring 219 is also fixedly connected to the screw screwed on the end side of the pallet. The other end of the tension spring extends downward and is fixedly connected to the side of the swing arm assembly. When the swing arm assembly is upright, the lifting platform and the pallet are always at the same horizontal height and are connected; the third driving mechanism includes a ball screw pair, a cylinder or an oil cylinder. A vertical guiding mechanism (not shown in the figure) is also provided between the lifting platform and the frame.

[0061] In this embodiment, the working principle of the swing arm bag clamping mechanism is as follows:

[0062] The swing arm assembly is initially in a vertical state, and the crank is at the dead center position.

[0063] After the system runs, the material packaging bag is pushed from the lifting platform to the middle of the swing arm assembly by an external cylinder, supported by the pallet of the bag supporting component, and then the bag clamping fingers of the bag clamping opening component clamp the bag opening of the material packaging bag.

[0064] Then the gear reduction motor is powered on and rotates to turn the crank to the next dead center. When reaching the dead center of the crank rocker mechanism, the gear reduction motor is powered off and stops rotating through the brake motor. At the same time, since one end side of the steel wire rope is fixed on the lifting platform, the wrap angle of the steel wire rope around the fixed pulley becomes smaller, causing the relative position of the pallet to drop a certain distance, but within the allowable range of the system. Then, after the material packaging bag moves away from the bag clamping opening component through other mechanisms, the gear reduction motor is powered on and rotates to turn the crank to the next dead center, waiting for the next material packaging bag to arrive.

[0065] When it is necessary to switch the specifications of the material packaging bag, the electric cylinder on the bag clamping opening component moves the finger cylinder to the corresponding bag width position; the lifting platform can lift synchronously with the pallet.

[0066] In this embodiment, the bag receiving mechanism includes swing arms 401 located on both sides of the conveying mechanism. A bag supporting fixed frame 402 is provided between the ends of adjacent swing arms. A liftable bag receiving plate 403 is arranged in the middle above the bag supporting fixed frame. A fifth cylinder 404 for driving the swing arm to rotate is provided behind each swing arm.

[0067] The fixing plate 125 is located above the conveying mechanism. Cylinder fixing plates 417 are arranged on both sides of the fixing plate. A cylinder rear seat 405 is provided at the rear of the fifth cylinder. A first rotating seat 406 is fixed below the cylinder fixing plate. The first rotating seat is hinged to the cylinder fixing plate through a shaft.

[0068] In this embodiment, a second rotating seat 407 is provided above the rear part of each swing arm, an articulated bearing 408 is provided at the output end of the fifth cylinder, and the articulated bearing is articulated with the second rotating seat through a spindle.

[0069] In this embodiment, a third rotating seat 409 is provided below one end of each swing arm away from the bag support bracket, and a swing arm extension plate 410 articulated with the third rotating seat is provided at the lower part behind the swing arm.

[0070] In this embodiment, a position adjusting plate 416 is provided below the third rotating seat.

[0071] In this embodiment, a sixth cylinder 411 is provided below the bag receiving plate, the output shaft of the sixth cylinder is connected to the lower part of the bag receiving plate, and the sixth cylinder is fixed outside the bag support bracket.

[0072] In this embodiment, in order to further reduce the impact force when the material packaging bag falls, a buffer pad 412 is provided on the upper surface of the bag receiving plate.

[0073] In this embodiment, in order to prevent the material packaging bag from falling, a baffle 413 is provided at the upper part in front of the bag support bracket.

[0074] In this embodiment, the bag support bracket includes an upper support plate 414 and a lower support plate 415. The two sides of the upper support plate are respectively fixed on the upper parts of adjacent swing arms, and the two sides of the lower support plate are respectively fixed on the lower parts of adjacent swing arms.

[0075] In this embodiment, the conveying mechanism 3 is a belt conveying mechanism.

[0076] A flipping and bag clamping assembly 1 is provided at the rear side of the above-mentioned bag receiving mechanism, and the flipping and bag clamping assembly is arranged on a fixing plate 125;

[0077] In this embodiment, the working principle of the bag receiving mechanism: the bag clamping device on the flipping and bag clamping assembly clamps the material packaging bag 102 on the flipping and bag clamping assembly. The fifth cylinder of the bag receiving mechanism retracts, and the fifth cylinder drives the swing arm and the bag support bracket to swing upward around the third rotating seat. The sixth cylinder drives the bag receiving plate to lift upward, so that the bag receiving plate extends out and abuts against the lower part of the flipping and bag clamping assembly, reducing the distance between the material packaging bag and the bag receiving plate. The bag clamping device on the flipping and bag clamping assembly loosens, enabling the material packaging bag to slide down to the bag support plate. At this time, the fifth cylinder extends, and the fifth cylinder drives the swing arm and the bag support bracket to flip downward and reset. At this time, the bag mouth of the material packaging bag contacts the conveying mechanism, and the sixth cylinder retracts, driving the bag receiving plate and the material packaging bag to descend, increasing the contact area between the material packaging bag and the conveying mechanism so that the conveying mechanism is sufficient to drive the material packaging bag to move, and the material packaging bag moves along the conveying mechanism to complete a bag receiving process.

[0078] In this embodiment, when the overall system starts to work, the fourth cylinder of the flipping and bag-clamping assembly extends, and the machine platform is in an inclined state at a fixed angle. At the same time, the first cylinder and the second cylinder extend, and the upper clamping plate and the lower clamping plate rise to the highest position. A bag-clamping reserved space is formed between the upper clamping plate and the lower clamping plate.

[0079] The material packaging bag is moved from the lifting platform to the middle of the swing arm assembly and supported by the supporting plate of the bag-supporting assembly. Then, the bag-clamping fingers of the bag-clamping mouth assembly clamp the bag mouth of the material packaging bag. Next, the gear reduction motor is powered on and rotates to turn the crank to the next dead point. When reaching the dead point of the crank-rocker mechanism, the gear reduction motor is powered off and stops rotating through the brake motor. The material packaging bag completes a certain angle of flipping. At the same time, since one end of the steel wire rope is fixed on the lifting platform and the wrap angle of the steel wire rope passing through the fixed pulley becomes smaller, the relative position of the supporting plate will drop a certain distance, but within the allowable range of the system. Then, after the material packaging bag moves away from the bag-clamping mouth assembly through other mechanisms, the gear reduction motor is powered on and rotates to turn the crank to the next dead point, waiting for the next package of material packaging bag to arrive.

[0080] After the bag mouth of the material packaging bag is flipped into the gap between the upper clamping plate and the lower clamping plate through the swing arm bag-clamping mechanism, the first cylinder and the second cylinder retract. Since the stroke of the second cylinder is greater than that of the first cylinder, then the upper bag-clamping plate and the lower bag-clamping plate close to clamp the bag mouth of the material packaging bag. Next, the finger cylinder on the bag-clamping mouth assembly of the swing arm bag-clamping mechanism opens, and the electric cylinder on the bag-clamping mouth assembly drives the cylinder mounting plate to move outward so that the finger cylinder completely disengages from the bag mouth of the material packaging bag. Then, the gear reduction motor is powered on and rotates to turn the crank to the next dead point, making the swing arm assembly in a vertical state, waiting for the next package of material packaging bag to move into place.

[0081] After the finger cylinder completely disengages from the bag mouth of the material packaging bag, the fourth cylinder retracts, and the flipping and bag-clamping assembly is in the initial horizontal state of the machine platform. Then, the vacuum shaping and sealing process of the post-section of the packaging machine is executed. At the same time, the fifth cylinder of the bag-receiving mechanism retracts, causing the swing arm of the bag-receiving mechanism to rotate upward by a certain angle. At the same time, the next package of material packaging bag is moved from the lifting platform to the middle of the swing arm assembly of the swing arm bag-clamping mechanism, waiting for the next flipping and docking process.

[0082] After the vacuum chamber mechanism completes the vacuum shaping and sealing of the material packaging bag, the fourth cylinder extends to make the machine platform in an inclined state at a fixed angle. Then, the sixth cylinder of the bag-receiving mechanism extends to move the bag-receiving plate upward to approach the lower part of the flipping and bag-clamping assembly. Next, the first cylinder on the flipping and bag-clamping assembly extends to loosen the bag mouth of the material packaging bag by the upper clamping plate of the flipping and bag-clamping assembly, causing the material packaging bag to slide down to the supporting plate. At the same time, the second cylinder of the flipping and bag-clamping assembly extends, and the upper clamping plate and the lower clamping plate of the flipping and bag-clamping assembly rise to the highest position. A bag-clamping reserved space is formed between the upper clamping plate and the lower clamping plate.

[0083] The fifth cylinder of the bag receiving mechanism extends, causing the swing arm of the bag receiving mechanism to rotate downward. The mouth end of the material packaging bag will disengage from the flipping bag clamping assembly and flip in the conveying direction of the conveying mechanism. The mouth of the material packaging bag comes into contact with the belt of the conveying mechanism. Then, the sixth cylinder of the bag receiving mechanism retracts, and the bag supporting plate descends, enabling the material packaging bag to increase the contact area with the conveying mechanism. Since the contact area between the material packaging bag and the conveying belt of the conveying mechanism becomes larger, the conveying belt is sufficient to drive the material packaging bag to move in the conveying direction of the conveying mechanism, completing one bag receiving process.

[0084] After the sixth cylinder of the bag receiving mechanism retracts, the next material packaging bag is sent into the gap between the upper clamping plate and the lower clamping plate of the flipping bag clamping assembly through the flipping of the swing arm bag clamping mechanism, and the above-mentioned working process is cycled in this way.

[0085] For any of the technical solutions disclosed in the present invention as described above, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many feasible numerical values. Since there are too many numerical values to list exhaustively, the present invention only discloses some numerical values to illustrate the technical solutions of the present invention. Moreover, the listed numerical values should not constitute a limitation to the protection scope of the present invention.

[0086] Meanwhile, for the present invention as described above, if it discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (such as using bolts or screws for connection), or it can also be understood as: a non-detachable fixed connection (such as riveting or welding). Of course, the mutual fixed connection can also be replaced by an integral structure (such as being integrally formed by a casting process) (except when it is obviously impossible to adopt the integral forming process).

[0087] In addition, for any of the technical solutions disclosed in the present invention, the terms used to represent the positional relationship or shape, unless otherwise stated, include states or shapes that are approximate, similar, or close to it.

[0088] Any component provided by the present invention can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. A method of using a bag transfer mechanism of a packaging machine, characterized in that, It includes a swing arm bag clamping mechanism, a flipping bag clamping assembly, a bag receiving mechanism and a conveying mechanism. The bag receiving mechanism is located at the input end of the conveying mechanism. The flipping bag clamping assembly is located above the conveying mechanism. The flipping bag clamping assembly is installed beside the swing arm bag clamping mechanism. A vacuum chamber mechanism is arranged above the flipping bag clamping assembly to descend and fit with the flipping bag clamping assembly to realize vacuum shaping and sealing of the material packaging bag. The flipping bag clamping assembly includes a flipping assembly, and a driving component is installed at the lower part of the flipping assembly; The swing arm bag clamping mechanism includes a frame, on which a swing arm assembly driven to swing by a first driving mechanism is hinged. Two bag clamping mouth assemblies are symmetrically arranged on the swing arm assembly, and a bag supporting component is arranged between the lower parts of the two bag clamping mouth assemblies; The swing arm assembly includes a left swing arm and a right swing arm. The left swing arm and the right swing arm are fixedly connected into one body through a connecting crank. Bag clamping mouth assemblies are symmetrically arranged at the tops of the left swing arm and the right swing arm. The bag supporting component is located between the left swing arm and the right swing arm. Each bag clamping mouth assembly includes an electric cylinder installed at the top of the swing arm assembly through a bag clamping fixing plate. A finger cylinder is installed on the moving block of the electric cylinder through a cylinder mounting plate. The bag clamping fingers of the finger cylinder are used to open and close the bag clamping. The bag supporting component includes a supporting plate. A vertical guiding mechanism is arranged between the supporting plate and the swing arm assembly. The supporting plate is driven to lift and lower by a second driving mechanism. The first driving mechanism includes a crank driven to rotate by a motor. The other end of the crank is hinged to a connecting rod. The other end of the connecting rod is hinged to the swing arm assembly. The bottom end of the swing arm assembly is hinged to the frame through a rotating shaft; The vertical guiding mechanism includes a vertical guide shaft fixed to the swing arm assembly. A guide sleeve is coaxially sleeved on the vertical guide shaft. The guide sleeve is fixedly connected to the side end of the supporting plate as a whole. A linear bearing is arranged between the guide sleeve and the vertical guide shaft. The vertical guiding mechanism includes a vertical guide shaft fixed to the swing arm assembly. A guide sleeve is coaxially sleeved on the vertical guide shaft. The guide sleeve is fixedly connected to the side end of the supporting plate as a whole. A linear bearing is arranged between the guide sleeve and the vertical guide shaft; The second driving mechanism includes a lifting platform located beside the supporting plate. The lifting platform is driven to lift and lower by a third driving mechanism. Fixed pulleys are installed at the top and bottom of the side of the swing arm assembly. A steel wire rope is tied to the screw bolt screwed on the side end of the supporting plate. The other end of the steel wire rope winds up around the top fixed pulley and then extends downward and winds around the bottom fixed pulley, and finally extends upward and is tied to the screw bolt screwed on the side end of the lifting platform. A tension spring is also fixed to the screw bolt screwed on the side end of the supporting plate. The other end of the tension spring extends downward and is fixed to the side part of the swing arm assembly. When the swing arm assembly is upright, the lifting platform and the supporting plate are always at the same horizontal height and are connected; The bag receiving mechanism includes swing arms located on both sides of the input end of the conveying mechanism. A bag supporting and fixing frame is provided between the ends of adjacent swing arms. In the middle above the bag supporting and fixing frame, there is a liftable bag receiving plate. Behind each swing arm, there is a fifth air cylinder for driving the swing arm to rotate. Below the bag receiving plate, there is a sixth air cylinder. The output shaft of the sixth air cylinder is connected to the lower part of the bag receiving plate, and the sixth air cylinder is fixed outside the bag supporting and fixing frame. Above the rear part of each swing arm, there is a second rotating seat. The output end of the fifth air cylinder is provided with a spherical plain bearing, and the spherical plain bearing is hinged to the second rotating seat. Below one end of each swing arm away from the bag supporting and fixing frame, there is a third rotating seat. Below the rear part of the swing arm, there is a swing arm extension plate hinged to the third rotating seat. On both sides of the driving component, there are air cylinder fixing plates. Behind the fifth air cylinder, there is an air cylinder rear seat. Below the air cylinder rear seat, there is a first rotating seat, and the first rotating seat is hinged to the air cylinder fixing plate. In front of the bag supporting and fixing frame, there is a baffle. On the upper surface of the bag receiving plate, there is a buffer pad. The flipping assembly includes a machine platform. Above the front end of the machine platform, there is a heat sealing assembly that can be lifted up and down. Behind the heat sealing assembly, there is an upper clamping assembly that can be lifted up and down. Below the heat sealing assembly and the upper clamping assembly, there is a lower clamping assembly that can be lifted up and down. A flat plate for placing the packaging bag is arranged behind the upper clamping assembly and the lower clamping assembly. The upper clamping assembly, the lower clamping assembly, and the flat plate are all arranged above the machine platform. The lower clamping assembly includes a lower clamping plate. On the upper end surface of the lower clamping plate, there is a silica gel strip for accommodating the heat sealing plate. In the middle of the lower end surface of the lower clamping plate, it is threadedly fastened to the cylinder rod of the first air cylinder through a third connecting rod. At both ends of the lower end surface of the lower clamping plate, they are respectively connected to the guide holes on the machine platform through a first guide shaft and a linear bearing for vertical guiding. The upper clamping assembly includes an upper clamping plate. Both ends of the upper clamping plate are respectively connected to the cylinder rods of the second air cylinders through first connecting rods. The upper clamping plate and the first connecting rod are connected through a pin shaft. The cylinder body of the second air cylinder is installed on the machine platform. The heat sealing assembly includes a heat sealing lifting and fixing plate, a heat sealing plate, and a second guide shaft. The heat sealing plate is installed on the heat sealing lifting and fixing plate through a heat insulation block. On the heat sealing lifting and fixing plate, there is a third air cylinder for driving the heat sealing plate to move up and down. The bottom end of the second guide shaft passes through the machine platform and the lower clamping plate from bottom to top and then is connected to the heat sealing plate. On the heat sealing plate, there are heating rods and thermocouples. The driving component includes a fixing plate. One end of the machine platform far away from the heat sealing assembly is movably connected to one side of the fixing plate through a connecting rod assembly. The middle part of the lower side of the machine platform is movably connected to the other side of the fixing plate through a crank assembly. On the fixing plate, there is a fourth air cylinder, and the fourth air cylinder drives the crank assembly to rotate. The connecting rod assembly includes fourth connecting rods symmetrically arranged on the left and right sides. The two ends of the fourth connecting rods are respectively hinged to the fixed plate and the machine table. The crank assembly includes crank rods symmetrically arranged on the left and right sides. The two ends of the crank rods are respectively hinged to the fixed plate and the machine table. The two crank rods are connected by a crank fixing rod. The fourth cylinder is hinged to the fixed plate, and the crank fixing rod is hinged to the driving part of the fourth cylinder; The usage method of the bag transferring mechanism of the packaging machine includes the following steps: (1) The fourth cylinder of the bag clamping assembly extends out, and the machine table is in an inclined state at a fixed angle. At the same time, the first cylinder and the second cylinder extend out, and the upper clamping plate and the lower clamping plate rise to the highest position. A bag clamping reserved space is formed between the upper clamping plate and the lower clamping plate; (2) The material packaging bag is moved from the lifting platform to the middle of the swing arm assembly and supported by the support plate of the bag support assembly. Then, the clamping fingers of the bag mouth clamping assembly clamp the bag mouth of the material packaging bag. Next, the gear reduction motor is powered on and rotates to turn the crank to the next dead point. When the dead point of the crank-rocker mechanism is reached, the gear reduction motor is powered off and stops rotating through the brake motor. The material packaging bag completes a certain angle of flipping. At the same time, since one end of the steel wire rope is fixed on the lifting platform and the wrap angle of the steel wire rope through the fixed pulley becomes smaller, the relative position of the support plate will drop a certain distance, but within the allowable range of the system. Then, after the material packaging bag moves away from the bag mouth clamping assembly through other mechanisms, the gear reduction motor is powered on and rotates to turn the crank to the next dead point, waiting for the next material packaging bag to arrive; (3) After the bag mouth of the material packaging bag is sent into the gap between the upper clamping plate and the lower clamping plate through the flipping of the swing arm bag clamping mechanism, the first cylinder and the second cylinder retract. Since the stroke of the second cylinder is greater than that of the first cylinder, then the upper bag clamping plate and the lower bag clamping plate close to clamp the bag mouth of the material packaging bag. Next, the finger cylinder on the bag mouth clamping assembly of the swing arm bag clamping mechanism opens, and the electric cylinder on the bag mouth clamping assembly drives the cylinder mounting plate to move outward so that the finger cylinder completely disengages from the bag mouth of the material packaging bag. Then, the gear reduction motor is powered on and rotates to turn the crank to the next dead point, making the swing arm assembly in a vertical state, waiting for the next material packaging bag to move into place; (4) After the finger cylinder completely disengages from the bag mouth of the material packaging bag, the fourth cylinder retracts, and the flipping bag clamping assembly is in the initial horizontal state of the machine table. Then, the vacuum shaping and sealing process of the post-stage of the packaging machine is executed. At the same time, the fifth cylinder of the bag receiving mechanism retracts, causing the swing arm of the bag receiving mechanism to rotate upward by a certain angle. At the same time, the next material packaging bag is moved from the lifting platform to the middle of the swing arm assembly of the swing arm bag clamping mechanism, waiting for the next flipping and docking process; (5) After the vacuum chamber mechanism completes the vacuum shaping and sealing of the material packaging bag, the fourth cylinder extends, making the machine table in an inclined state at a fixed angle. Then, the sixth cylinder of the bag receiving mechanism extends, causing the bag receiving plate to move upward and close to the lower part of the flipping bag clamping assembly. Next, the first cylinder on the flipping bag clamping assembly extends, causing the upper clamping plate of the flipping bag clamping assembly to loosen the bag mouth of the material packaging bag, making the material packaging bag slide down to the support plate; at the same time, the second cylinder of the flipping bag clamping assembly extends, and the upper clamping plate and the lower clamping plate of the flipping bag clamping assembly rise to the highest position, and a bag clamping reserved space is formed between the upper clamping plate and the lower clamping plate; (6) The fifth cylinder of the bag receiving mechanism extends, causing the swing arm of the bag receiving mechanism to rotate downward. The mouth end of the material packaging bag will break away from the flipping bag clamping assembly and flip in the conveying direction of the conveying mechanism. The mouth of the material packaging bag comes into contact with the belt of the conveying mechanism. Then, the sixth cylinder of the bag receiving mechanism retracts, and the bag supporting plate descends, enabling the material packaging bag to increase the contact area with the conveying mechanism. Since the contact area between the material packaging bag and the conveying belt of the conveying mechanism becomes larger, the conveying belt is sufficient to drive the material packaging bag to move in the conveying direction of the conveying mechanism, completing one bag receiving process; (7) After the sixth cylinder of the bag receiving mechanism retracts, the next material packaging bag is sent into the gap between the upper clamping plate and the lower clamping plate of the flipping bag clamping assembly through the flipping of the swing arm bag clamping mechanism, and the above working steps are cycled in this way.

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