Multi-path bagging device

Abstract

The invention provides a multi-path bagging device which is characterized by comprising a machine frame, a bag hanging mechanism and a bag opening mechanism, and the bag hanging mechanism and the bag opening mechanism are arranged on the machine frame. The bag hanging mechanism comprises a fixing plate fixed to the rack, an upper bag suction unit, a lower bag suction unit, a main rotating unit used for driving the two bag suction units to rotate to be close to or away from each other, an upper fine adjustment rotating unit, a lower fine adjustment rotating unit used for finely adjusting the bag suction units and a front-back moving unit used for driving the two bag suction units to move front and back. The bag opening mechanism comprises a molding barrel, an air blowing unit used for opening the molding barrel and an air cylinder pushing unit used for retracting the molding barrel. The upper bag suction unit and the lower bag suction unit are the same in structure, each bag suction unit comprises an air distribution pipe and n groups of air suction blocks arranged on the air distribution pipe, the number of the cylinders is consistent with the group number of the air suction blocks, and n is larger than or equal to 2. According to the multi-path bagging device, bagging work of two or more packaging bags can be achieved at the same time, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging equipment, in particular to a multi-channel bagging device. Background Art

[0002] In modern industrial production processes, many products are packaged using automated packaging production lines. Some products are packaged in packaging bags. However, the bagging devices in current automated packaging production lines are typically only able to put on one bag at a time. For example, patent application number CN201811027034.4 discloses an automatic bagging and heat shrinking machine, and patent application number CN202223266416.7 discloses a lifting filling and bagging device. These existing bagging devices only put on one bag at a time, resulting in low efficiency. Summary of the Invention

[0003] In order to solve the above problems, the present invention aims to provide a multi-channel bagging device that can bag two or more bags at a time, thereby doubling the production efficiency.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a multi-channel bag-covering device, which is characterized in that it includes: a frame and a bag hanging mechanism and a bag opening mechanism arranged on the frame, wherein the bag hanging mechanism includes: a wall panel fixed to the frame, two upper and lower bag suction units, a main rotating unit for driving the two bag suction units to rotate closer or farther away, two upper and lower fine-tuning rotating units for fine-tuning the bag suction units, and a front-to-back moving unit for driving the two bag suction units to move forward and backward; the bag opening mechanism includes: a mold cylinder, a blowing unit for opening the mold cylinder, and a cylinder pushing unit for retracting the mold cylinder; the upper and lower bag suction units have the same structure, each bag suction unit includes an air distribution pipe and n groups of suction blocks arranged on the air distribution pipe, the number of mold cylinders is consistent with the number of groups of suction blocks, and n is greater than or equal to 2.

[0006] Furthermore, the multi-channel bagging device provided by the present invention may also have the following characteristics: each group of suction blocks consists of two suction blocks, and the distance between the two suction blocks is less than the width of the packaging bag; a group of suction blocks of the upper bag suction unit cooperates with a group of suction blocks of the lower bag suction unit to respectively suck the upper surface and lower surface of the same packaging bag.

[0007] Furthermore, in the multi-channel bag-covering device provided by the present invention, it can also have the following characteristics: wherein, the main rotating unit includes a first driving cylinder, a guide groove plate, a sliding wheel, an arm, a connecting shaft, a connecting shaft connecting arm, and a hinge connecting rod assembly; the connecting shaft includes two upper and lower connecting shafts, and the two connecting shafts are respectively connected to the upper and lower bag suction units through the connecting shaft connecting arms; the guide groove plate is connected to the first driving cylinder, and the first driving cylinder is fixed on the wall panel, and the first driving cylinder drives the guide groove plate to move up and down; a broken line guide groove is provided on the guide groove plate, and the sliding wheel is located in the guide groove, one end of the arm is connected to the sliding wheel by a bolt, and the other end of the arm is connected to the connecting shaft below; the hinge connecting rod assembly consists of three connecting rods connected in sequence by hinges, one end of the hinge rod assembly is connected to the connecting shaft below, and the other end of the hinge rod assembly is connected to the connecting shaft above.

[0008] Furthermore, the multi-channel bagging device provided by the present invention may also have the following features: wherein, the main rotating unit also includes a limiting strip plate, a plurality of through holes are opened on the limiting strip plate, and the upper and lower connecting shafts respectively pass through different through holes on the limiting strip plate.

[0009] Furthermore, the multi-channel bagging device provided by the present invention may also have the following features: wherein, the main rotating unit also includes a vertical guide rail slide assembly; the vertical guide rail slide assembly is divided into two groups, which are respectively located on both sides of the back of the guide groove plate, and the vertical guide rail slide assembly includes a vertical guide rail fixed on the wall panel, a slide cooperating with the vertical guide rail, and a guide groove plate mounting plate fixed on the slide, and the guide groove plate mounting plate is fixed to the guide groove plate.

[0010] Furthermore, in the multi-channel bagging device provided by the present invention, it can also have the following characteristics: wherein, the upper and lower fine-tuning rotation units have different structures; the lower fine-tuning rotation unit includes a fixed block, a bracket is fixed on the fixed block, a second driving cylinder is fixed on the bracket, the second driving cylinder is connected to the fisheye connecting rod, the fisheye connecting rod is connected to the fisheye joint, and the fisheye joint is connected to the connecting arm; the upper fine-tuning rotation unit includes a fixed block, a bracket is fixed on the fixed block, a fisheye connecting rod is fixed on the bracket, the fisheye connecting rod is connected to the fisheye joint, and the fisheye joint is connected to the connecting arm; the connecting arms in the upper fine-tuning rotation unit and the lower fine-tuning rotation unit are respectively connected to the air distribution pipes in the upper bag suction unit and the lower bag suction unit.

[0011] Furthermore, the multi-channel bagging device provided by the present invention may also have the following features: wherein, the front and rear moving units include a driving motor, an active synchronous pulley, a driven synchronous pulley, a belt, a belt connecting plate, and a vertical plate; the driving motor is fixed on the wall panel, and the driving motor drives the active synchronous pulley; the belt is connected to the active synchronous pulley, the driven synchronous pulley is installed on the wall panel, and the driven synchronous pulley is connected to the belt; the vertical plate is connected and fixed to the belt through the belt connecting plate, and a plurality of through holes are opened on the vertical plate, and the upper and lower connecting shafts respectively pass through different through holes on the vertical plate.

[0012] Furthermore, the multi-way bagging device provided by the present invention may also have the following features: wherein, the forward and backward moving unit also includes a slide and a transverse guide rail; the transverse guide rail is fixed on the wall panel, the slide is slidably installed on the transverse guide rail, and the vertical plate is fixed to the slide.

[0013] Furthermore, the multi-channel bagging device provided by the present invention may also have the following features: wherein, the blowing unit includes a blowing pipe and an inflation device; the bag opening mechanism also includes a door plate, the mold cylinder is installed on the door plate, and the door plate is provided with air holes at the position corresponding to the mold cylinder, and each air hole is connected to a blowing pipe, and the blowing pipe is connected to the inflation device.

[0014] Furthermore, the multi-way bagging device provided by the present invention may also have the following features: wherein, the cylinder pushing unit includes a cylinder mounting bracket, a cylinder, a push plate, a push rod, an L-shaped connecting block, and a hinge seat; the cylinder is fixed on the cylinder mounting bracket, the push plate is connected to the cylinder, the push rod is fixed on the push plate, and the cylinder drives the push rod to move forward and backward; the hinge seat is fixed on the door panel, the right-angle position of the L-shaped connecting block is hinged to the hinge seat, one end of the L-shaped connecting block is provided with a round bottom block, and the other side surface of the L-shaped connecting block is fixed with an auxiliary pressure block.

[0015] The effects and effects of the present invention:

[0016] In the multi-channel bagging device of the present invention, the bag hanging mechanism adsorbs the packaging bag and preliminarily opens the bag opening, and the bag opening mechanism fully opens the packaging bag. The bag suction unit in the bag hanging mechanism adsorbs the upper and lower surfaces of the packaging bag, the main rotating unit and the fine-tuning rotating unit operate to open the packaging bag opening, and the forward and backward moving units operate to deliver the packaging bag to the mold cylinder position. In the bag opening mechanism, the cylinder pushing unit operates to keep the mold cylinder in a contracted state. When the packaging bag is delivered to the mold cylinder position, the cylinder pushing unit retreats, and the blowing unit blows air to open the mold cylinder, thereby fully opening the bag. The multi-channel bagging device of the present invention can simultaneously realize the bagging work of two or more packaging bags, and the production efficiency is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2 is a schematic structural diagram of a multi-channel bagging device according to an embodiment of the present invention;

[0018] Figure 2 1 is a structural schematic diagram of a bag hanging mechanism in an embodiment of the present invention (first perspective stereogram);

[0019] Figure 3 is a top view of the bag hanging mechanism in an embodiment of the present invention;

[0020] Figure 4 2 is a schematic structural diagram of a bag hanging mechanism in an embodiment of the present invention (stereoscopic diagram from a second viewing angle);

[0021] Figure 5 is a side view from a second perspective of the bag hanging mechanism in an embodiment of the present invention;

[0022] Figure 6 is a side view from a first perspective of a bag hanging mechanism in an embodiment of the present invention;

[0023] Figure 7 Schematic diagram of a bag suction unit and a fine-tuning rotation unit of a bag hanging mechanism in an embodiment of the present invention;

[0024] Figure 8 2 is a schematic structural diagram of the bag opening mechanism in an embodiment of the present invention (stereoscopic diagram from a first perspective);

[0025] Figure 9 yes Figure 8 Enlarged view of point A in the middle;

[0026] Figure 10 2 is a schematic structural diagram of the bag opening mechanism in an embodiment of the present invention (stereoscopic diagram from a first perspective);

[0027] Figure 11 This is a schematic diagram of the mold cylinder, L-shaped connecting block, and hinge seat of the bag-opening mechanism in an embodiment of the present invention. The following symbols are in the figure: bag hanging mechanism 1; bag-opening mechanism 2; packaging bag 3; bag suction unit 11; air distribution pipe 111; suction block 112; wall panel 15; strip-shaped through hole 15a; main rotating unit 13; first driving cylinder 132; guide plate 133; guide groove 133a; sliding wheel 134; arm 135; connecting shaft 137; connecting shaft connecting arm 138; hinge connecting rod assembly 136; connecting rod 136a; connecting rod 136c; connecting rod 136e; pin 136b; pin 136d; limiting strip 139; cylinder mounting seat 131; vertical guide rail slide assembly 130; vertical guide rail 130a; slide 130b; guide plate mounting plate 130c; fine-tuning rotating unit 14; upper fine-tuning rotating unit Moving unit 14a; lower fine-tuning rotating unit 14b; fixed block 141; bracket 142; fisheye connecting rod 143; fisheye joint 144; connecting arm 145; second driving cylinder 147; forward and backward moving unit 12; driving motor 121; active synchronous pulley 122; driven synchronous pulley 124; belt 123; belt connecting plate 125; vertical plate 126; slide 127; horizontal guide rail 128; door plate 24; mold cylinder 21; blowing unit 22; blowing pipe 221; cylinder pushing unit 23; cylinder mounting bracket 231; cylinder 232; push plate 233; push rod 234; L-shaped connecting block 237; hinge seat 236; round bottom block 235; auxiliary pressure block 238. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the technical solutions of the present invention.

[0029] <Example>

[0030] See also Figure 1 An embodiment of the present invention provides a multi-channel bagging device, including a frame (not shown) and a bag hanging mechanism 1 and a bag opening mechanism 2 arranged on the frame.

[0031] The frame is the supporting structure of the multi-channel bagging device and is installed on the production line. Its shape and installation position on the production line can be set accordingly according to production requirements.

[0032] The bag hanging mechanism 1 includes: a wall panel 15 , a bag suction unit 11 , a main rotating unit 13 , a fine-tuning rotating unit 14 , and a forward and backward moving unit 12 .

[0033] The wall panel 15 is vertically fixed on the frame. Figure 2 and Figure 6 The wall panel 15 is provided with two upper and lower parallel strip-shaped through holes 15a.

[0034] See also Figure 1 、 Figure 2 and Figure 7 The bag suction unit 11 includes two upper and lower bag suction units with the same structure. Each bag suction unit 11 includes an air distribution pipe 111 and n groups of air suction blocks 112 arranged on the air distribution pipe 111, where n is greater than or equal to 2. Each group of air suction blocks 112 consists of two air suction blocks 112, and the distance between the two air suction blocks 112 is less than the width of the packaging bag. The air distribution pipe 111 is connected to a vacuum device (not shown in the figure) for forming a negative pressure in the tube, thereby adsorbing the packaging bag. The vacuum device is an existing commercially available product and does not belong to the improved part of the present invention, so it will not be elaborated here. A group of air suction blocks 112 of the upper bag suction unit 11 cooperates with a group of air suction blocks 112 of the lower bag suction unit 11 to respectively absorb the upper surface and lower surface of the same packaging bag.

[0035] In this embodiment, two sets of suction blocks 112 are provided on the air distribution pipe 111 of each bag suction unit 11. Therefore, the bag hanging mechanism 1 can operate on two packaging bags simultaneously. In other words, the multi-channel bagging device of this embodiment is a dual-channel bagging device. However, this is not limiting. In other embodiments, the air distribution pipe of each bag suction unit can be provided with more sets of suction blocks, for example, three sets. In this way, the multi-channel bagging device is a three-channel bagging device, capable of operating on three packaging bags simultaneously.

[0036] See also Figures 3 to 5The main rotating unit 13 is used to drive the two bag suction units 11 to rotate closer or farther. The main rotating unit 13 includes: a first driving cylinder 132, a guide plate 133, a sliding wheel 134, an arm 135, a connecting shaft 137, a connecting arm 138, a hinge connecting rod assembly 136, a limiting strip 139, and a vertical guide rail slide assembly 130.

[0037] The connecting shaft includes two upper and lower connecting shafts 137, and the two connecting shafts 137 are connected to the upper and lower suction bag units 11 through connecting shaft connecting arms 138. Figure 6 One end of the connecting arm 138 is fixedly connected to the connecting shaft 137.

[0038] The first driving cylinder 132 is fixed to the wall panel 15 via the cylinder mounting base 131. The guide groove plate 133 is connected to the first driving cylinder 132 via a connecting block, and the first driving cylinder 132 drives the guide groove plate 133 to move up and down.

[0039] There are two groups of vertical guide rail slide assemblies 130, and the two groups have the same structure. The two groups are respectively located on both sides of the back side of the guide plate 133. Each group of vertical guide rail slide assemblies 130 includes: a vertical guide rail 130a, a slide 130b, and a guide plate mounting plate 130c. The vertical guide rail 130a is vertically arranged and fixed on the wall panel 15. The slide 130b is slidably installed in cooperation with the vertical guide rail 130a. The guide plate mounting plate 130c is fixed on the slide 130b. The guide plate mounting plate 130c is fixed to the guide plate 133. When the guide plate 133 moves up and down, the slides 130b in the two groups of vertical guide rail slide assemblies 130 slide along the vertical guide rail 130a, which plays a stabilizing role in the up and down movement of the guide plate 133.

[0040] The guide plate 133 has a zigzag guide groove 133a, within which a sliding wheel 134 is located. One end of an arm 135 is bolted to the sliding wheel 134, while the other end of the arm 135 is fixedly connected to a coupling shaft 137 below. As the guide plate 133 moves up and down, it causes the sliding wheel 134 to slide within the guide groove 133a, causing the arm 135 to swing. This swinging of the arm 135 causes the coupling shaft 137 below to rotate.

[0041] Hinge link assembly 136 consists of three links connected in sequence by hinges. Lower link 136a is fixedly connected to lower connecting shaft 137 and is driven for rotation by lower connecting shaft 137. Middle link 136c is connected to lower link 136a via pin 136b. Upper link 136e is connected to middle link 136c via pin 136d. Upper link 136e is fixedly connected to upper connecting shaft 137. When arm 135 rotates, driving lower connecting shaft 137, hinge link assembly 136 causes upper connecting shaft 137 to rotate synchronously in opposite directions, driven by upper link 136e.

[0042] The two upper and lower connecting shafts 137 rotate, which drives the upper and lower connecting shaft arms 138 to rotate closer or farther away, that is, to drive the upper and lower bag suction units 11 to rotate closer or farther away. Figure 4 As shown by the middle curved arrow, the bag opening will be opened.

[0043] Preferably, see Figure 4 The main rotating unit 13 is provided with a limiting strip plate 139, which has a plurality of through holes, and the upper and lower connecting shafts 137 respectively pass through different through holes on the limiting strip plate 139. The limiting strip plate 139 plays a stabilizing role.

[0044] See also Figures 1 to 4 as well as Figure 7 The fine-tuning rotation unit 14 is used to fine-tune the bag suction unit 11. The fine-tuning rotation unit 14 includes an upper fine-tuning rotation unit 14a and a lower fine-tuning rotation unit 14b, and the structures of the upper and lower fine-tuning rotation units are different.

[0045] Lower fine-tuning rotation unit 14b includes a fixed block 141 with a hole for connecting shaft 137 to pass through. Fixed block 141 is secured to bracket 142, which in turn is secured to a second drive cylinder 147. Second drive cylinder 147 is connected to a fisheye connecting rod 143, which in turn is connected to a fisheye joint 144, which in turn is connected to a connecting arm 145.

[0046] The upper fine-tuning rotation unit 14a includes a fixed block 141 having a hole therein for the connecting shaft 137 to pass through. A bracket 142 is fixed to the fixed block 141, and a fisheye connecting rod 143 is fixed to the bracket 142. The fisheye connecting rod 143 is connected to a fisheye joint 144, which is connected to a connecting arm 145.

[0047] The connecting arms 145 in the upper fine-tuning rotating unit 14a and the lower fine-tuning rotating unit 14b are connected to the gas distribution pipes 111 in the upper bag suction unit 11 and the lower bag suction unit 11 respectively. Figure 6 A rotating bearing is installed at the connection between the coupling arm 138 and the air distribution pipe 111 of the bag suction unit 11, allowing the air distribution pipe 111 to rotate within the bearing. The lower fine-tuning rotation unit 14b is an active component, activated by the second drive cylinder 147 to rotate the air distribution pipe 111 in the lower bag suction unit 11. The upper fine-tuning rotation unit 14a is not fine-tuned during packaging production, but can be fine-tuned manually during maintenance or pre-production adjustments.

[0048] See also Figure 1 、 Figure 2 and Figure 6 The front-back moving unit 12 is used to drive the two bag suction units 11 to move forward and backward. The front-back moving unit 12 includes a driving motor 121, an active synchronous pulley 122, a driven synchronous pulley 124, a belt 123, a belt connecting plate 125, a vertical plate 126, a slide 127 and a transverse guide rail 128.

[0049] The drive motor 121 is mounted on the wall panel 15 via a motor mounting bracket. This drives the driving synchronous pulley 122. A belt 123 is connected to the driving synchronous pulley 122. Belt 123 is oriented horizontally, corresponding to the front-to-back direction of the bag-opening mechanism 1. The belt 123 is driven by the driving synchronous pulley 122. A driven synchronous pulley 124 is mounted on the wall panel 15 via a pulley mounting bracket and connected to the belt 123. A riser 126 is secured to the belt 123 via a belt connecting plate 125 and screws. Belt 123 drives the riser 126 forward and backward.

[0050] The upper and lower fixing blocks 141 are respectively fixed on the vertical plate 126. The vertical plate 126 is provided with a plurality of through holes, and the upper and lower connecting shafts 137 respectively penetrate the through holes on the vertical plate 126.

[0051] Transverse rails 128 are positioned horizontally and fixed to wall panels 15. Sliders 127 are slidably mounted on transverse rails 128. Vertical panels 126 are fixed to sliders 127, positioned vertically between upper and lower fixed blocks 141. As vertical panels 126 move forward and backward, sliders 127 slide along transverse rails 128, providing guidance and stability.

[0052] See also Figure 1 、 Figures 8 to 10 The bag opening mechanism 2 includes: a door plate 24, a mold cylinder 21, a blowing unit 22 for opening the mold cylinder 21, and a cylinder pushing unit 23 for retracting the mold cylinder 21.

[0053] The number of mold cylinders 21 is consistent with the number of groups of suction blocks 112. In this embodiment, there are two groups, which can realize simultaneous operation of two packaging bags. However, this is not limiting. In other embodiments, the number of mold cylinders 21 can be set to more groups according to the number of groups of suction blocks 112, realizing simultaneous operation of more packaging bags.

[0054] The blowing unit 22 includes a blowing pipe 221 and an inflation device (not shown). The inflation device is a commercially available product and does not constitute an improvement to the present invention, so it will not be discussed in detail here. The mold cylinder 21 is mounted on a door plate 24. The door plate 24 has air holes at positions corresponding to the mold cylinder 21. Each air hole is connected to a blowing pipe 221, which is connected to the inflation device. Blowing air from the blowing pipe 221 causes the mold cylinder 21 to expand, thereby fully expanding the packaging bag located on the outer periphery of the mold cylinder.

[0055] The cylinder pushing unit 23 includes a cylinder mounting bracket 231 , a cylinder 232 , a push plate 233 , a push rod 234 , an L-shaped connecting block 237 , a hinge seat 236 , a round bottom block 235 , and an auxiliary pressing block 238 .

[0056] The door plate 24 and the cylinder mounting bracket 231 are fixed to a base (not shown), which can be mounted on the frame via a lifting device. The lifting device is a commercially available product, such as a hydraulic lifting device. Therefore, the entire bag opening mechanism 2 can be raised or lowered relative to the bag hanging mechanism 1.

[0057] The cylinder 232 is fixed to the cylinder mounting bracket 231. The push plate 233 is connected to the cylinder 232, and the push rod 234 is fixed to the push plate 233. The door plate 24 has a through hole starting at the position corresponding to the rod 234, for the push rod 234 to pass through. The cylinder 232 preferably adopts a three-axis cylinder. The hinge seat 236 is fixed to the door plate 24, and the L-shaped connecting block 237 is hinged to the hinge seat 236 at a right angle. A round bottom block 235 is provided at one end of the L-shaped connecting block 237, and the position of the round bottom block 235 corresponds to the through hole on the door plate 24. An auxiliary pressure block 238 is fixed to the other side surface of the L-shaped connecting block 237.

[0058] See also Figures 9 to 11 When the shaft of the cylinder 232 extends, it will drive the push plate 233 to move, thereby driving the push rod 234 to enter the through hole of the door plate 24, and the push rod 234 will lift the round bottom block 235, so that the L-shaped connecting block 237 is Figure 11 In the posture shown, the auxiliary pressing block 238 presses the side of the mold cylinder 21, so that the mold cylinder 21 is in a contracted state.

[0059] The connection methods between other components not described in detail in this embodiment are conventional connection methods such as bolt connection, welding, plug-in connection, and socket connection according to actual conditions, and will not be described in detail one by one.

[0060] The working process of the multi-channel bagging device of the embodiment of the present invention is as follows:

[0061] The bag hanging mechanism 1 works: the bag suction unit 11 absorbs the upper and lower surfaces of the packaging bag; then, the main rotation unit 13 and the fine-tuning rotation unit 14 operate to open the packaging bag mouth; then, the front and rear moving unit 12 operates to send the packaging bag to the position of the mold cylinder 21.

[0062] The bag-opening mechanism 2 operates as follows: the cylinder pusher 23 initially maintains the mold cylinder in a contracted state. When the bag reaches the mold cylinder 21, the cylinder pusher 23 retracts, and the air blowing unit 22 blows air to expand the mold cylinder 21, thereby fully expanding the bag and completing the bagging process. After bagging is completed, the bag-opening mechanism 2 is lowered by the lifting device, and the bag is then processed by staff or other production equipment for the next step.

[0063] The multi-channel bagging device of this embodiment is a dual-channel bagging device that can simultaneously bag two packaging bags, doubling the efficiency. In other embodiments, the multi-channel bagging device, such as a three-channel bagging device, can simultaneously bag three packaging bags. Detailed descriptions of these other multi-channel bagging devices are omitted here.

[0064] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A multi-channel bagging device, characterized in that: include: A frame and a bag hanging mechanism and a bag opening mechanism arranged on the frame, The bag hanging mechanism comprises: a wall plate fixed on the frame, two upper and lower bag suction units, a main rotating unit for driving the two bag suction units to rotate closer or farther away, two upper and lower fine-tuning rotating units for fine-tuning the bag suction units, and a front-to-back moving unit for driving the two bag suction units to move forward and backward; The bag opening mechanism comprises: a mold cylinder, a blowing unit for opening the mold cylinder, and a cylinder pushing unit for retracting the mold cylinder; The upper and lower bag suction units have the same structure, and each of the bag suction units includes an air distribution pipe and n groups of air suction blocks arranged on the air distribution pipe; The number of the mold cylinders is consistent with the number of groups of the suction blocks, and n is greater than or equal to 2.

2. The multi-channel bagging device according to claim 1, characterized in that: in, Each group of air suction blocks consists of two air suction blocks, and the distance between the two air suction blocks is smaller than the width of the packaging bag.

3. The multi-channel bagging device according to claim 1, characterized in that: in, The main rotating unit comprises a first driving cylinder, a guide groove plate, a sliding wheel, an arm, a connecting shaft, a connecting shaft connecting arm, and a hinge connecting rod assembly; The connecting shaft comprises two upper and lower connecting shafts, and the two connecting shafts are respectively connected to the upper and lower suction bag units through the connecting shaft connecting arms; The guide groove plate is connected to the first driving cylinder, the first driving cylinder is fixed to the wall plate, and the first driving cylinder drives the guide groove plate to move up and down; A zigzag guide groove is provided on the guide groove plate, the sliding wheel is located in the guide groove, one end of the arm is connected to the sliding wheel by a bolt, and the other end of the arm is connected to the connecting shaft below; The hinge-connecting rod assembly is composed of three connecting rods connected in sequence by hinges, one end of the hinge-connecting rod assembly is connected to the connecting shaft below, and the other end of the hinge-connecting rod assembly is connected to the connecting shaft above.

4. The multi-channel bagging device according to claim 3, characterized in that: in, The main rotating unit further comprises a limiting strip plate, a plurality of through holes are formed on the limiting strip plate, and the upper and lower connecting shafts respectively pass through different through holes on the limiting strip plate.

5. The multi-channel bagging device according to claim 3, characterized in that: in, The main rotating unit also includes a vertical guide rail slide assembly; The vertical guide rail slide assembly consists of two groups, which are respectively located on both sides of the back side of the guide groove plate; The vertical guide rail slide assembly comprises a vertical guide rail fixed on the wall panel, a slide matched with the vertical guide rail, and a guide groove plate mounting plate fixed on the slide, wherein the guide groove plate mounting plate is fixed to the guide groove plate.

6. The multi-channel bagging device according to claim 3, characterized in that: in, The structures of the upper and lower fine-tuning rotation units are different; The lower fine-tuning rotation unit includes a fixed block, a bracket is fixed on the fixed block, a second driving cylinder is fixed on the bracket, the second driving cylinder is connected to the fisheye connecting rod, the fisheye connecting rod is connected to the fisheye joint, and the fisheye joint is connected to the connecting arm; The upper fine-tuning rotation unit includes a fixed block, a bracket is fixed on the fixed block, a fisheye connecting rod is fixed on the bracket, the fisheye connecting rod is connected to the fisheye joint, and the fisheye joint is connected to the connecting arm; The connecting arms in the upper fine-tuning rotating unit and the lower fine-tuning rotating unit are respectively connected to the air distribution pipes in the upper bag suction unit and the lower bag suction unit.

7. The multi-channel bagging device according to claim 3, characterized in that: in, The forward and backward moving unit includes a driving motor, a driving synchronous pulley, a driven synchronous pulley, a belt, a belt connecting plate, and a vertical plate; The driving motor is fixed on the wall plate, and the driving motor drives the active synchronous pulley; The belt is connected to the driving synchronous pulley, the driven synchronous pulley is installed on the wall panel, and the driven synchronous pulley is connected to the belt; The vertical plate is connected and fixed to the belt via the belt connecting plate. A plurality of through holes are provided on the vertical plate, and the upper and lower connecting shafts respectively pass through different through holes on the vertical plate.

8. The multi-channel bagging device according to claim 7, characterized in that: in, The forward and backward moving unit also includes a slide and a transverse guide rail; The transverse guide rail is fixed on the wall plate, the slide is slidably mounted on the transverse guide rail in cooperation, and the vertical plate is fixed to the slide.

9. The multi-channel bagging device according to claim 1, characterized in that: in, The blowing unit includes a blowing pipe and an inflation device; The bag opening mechanism also includes a door plate, the mold cylinder is mounted on the door plate, the door plate is provided with air holes at positions corresponding to the mold cylinder, each air hole is respectively connected to the air blowing pipe, and the air blowing pipe is connected to the inflation device.

10. The multi-channel bagging device according to claim 9, characterized in that: in, The cylinder pushing unit includes a cylinder mounting bracket, a cylinder, a push plate, a push rod, an L-shaped connecting block, and a hinge seat; The cylinder is fixed on the cylinder mounting bracket, the push plate is connected to the cylinder, the push rod is fixed on the push plate, and the cylinder drives the push rod to move forward and backward; The hinge seat is fixed on the door panel, the L-shaped connecting block is hinged to the hinge seat at a right angle, a round bottom block is arranged at one end of the L-shaped connecting block, and an auxiliary pressing block is fixed on the other side surface of the L-shaped connecting block.

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