Automatic package building apparatus and control method thereof

Abstract

The automatic bag building device and the control method thereof adopt a new type of bag building execution assembly to realize multi-station sequential execution of bag hanging, part connecting and mouth closing cycle operation, thereby achieving the design purposes of significantly saving bag building time, reducing labor intensity and improving bag building efficiency. The automatic bag building device comprises an upper turntable assembly, a plurality of bag collecting bag support assemblies arranged on the upper turntable assembly and capable of rotating around a vertical shaft and used for suspending and positioning bag collecting bags.

Description

TECHNICAL FIELD

[0001] The application relates to an efficient package building device applied to a conveying sorting system and a control method thereof, and belongs to the field of logistics storage. BACKGROUND

[0002] In the conveying equipment of the logistics storage industry, the accuracy and operation efficiency of the rapid sorting process have higher requirements. With the rapid development of the domestic e-commerce industry, how to efficiently implement the package operation while improving the sorting efficiency of the logistics transfer field has become a new problem. After being conveyed and sorted, the small packages of the existing cross-belt automatic sorting system mainly rely on manual package building after falling into the package bag through the chute. Usually, one worker is responsible for about 10 package building stations at the end of the cross-belt falling groove. During the package building process, the operator needs to move back and forth between the 10 stations without interruption, which wastes a lot of time. In addition, since the woven bag closing method is manually operated, the closing action occupies more than half of the package building time, and the package building efficiency is low.

[0003] In addition, the following prior art patent is disclosed, application number CN 202022930105.0, and the name is a full-automatic fast bag closing machine for woven bags, which includes a base, a conveying mechanism on the base, a top plate on the base, the left and right parts of the bottom surface of the top plate are fixedly connected with the top surface of the base through two lifting mechanisms, the lifting mechanisms on the left and right sides have a sealing head and a nail plate, the bottom surface of the top plate has a discharge port, the bottom surface of the top plate has four first arc-shaped electric sliding rails, the bottom surface of the top plate has four second arc-shaped electric sliding rails, the bottom surface of the top plate has eight groups of sliding components, the sliding components include a first block and a second block, the bottom surface of the first block and the second block has a third sliding rail, the third sliding rail has an electric sliding block, the bottom surface of the electric sliding block has a circular rod, the eight groups of sliding components are divided into four groups of first sliding mechanisms and another four groups of second sliding mechanisms, and a controller is additionally provided. The above-mentioned prior art has designed sliding components cooperating with the bag closing operation to sequentially open and tighten the bag opening of the woven bag, but the overall scheme is still configured with a single joint station, the package building efficiency is still low, and manual pulling of the bag opening is required to cooperate with the bag closing machine to perform bag closing. The package building process is complex and time-consuming.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The automatic package building device and the control method thereof disclosed by the application solve the problems of the prior art by adopting a new type of structure of a package building execution assembly to realize multi-station sequential execution of bag hanging, jointing and closing cycle operation, thereby achieving the design purposes of significantly saving package building time, reducing labor intensity and improving package building efficiency.

[0006] To achieve the above design purpose, the automatic package building device comprises an upper turntable assembly, a plurality of set package bag support assemblies arranged on the upper turntable assembly and capable of rotating around a vertical axis and used for suspending and positioning the set package bags; the upper turntable assembly comprises an upper turntable frame vertically connected with the set package bag support assemblies, a driving motor assembly is installed at the bottom of the upper turntable frame, and the upper turntable frame is capable of rotating along the vertical axis thereof driven by the driving motor assembly; the upper turntable frame has a profile frame composed of a plurality of profiles which are spliced with each other; the driving motor assembly comprises a servo motor and a speed reducer, the driving shaft connected with the output end of the speed reducer is vertically arranged, one end of the driving shaft is fixedly connected with the profile frame, and the other end of the driving shaft is arranged on a torsion arm in a rotatable manner; each set of set package bag support assembly comprises two pairs of transmission shafts which are vertically arranged and are connected with each other in a horizontal transmission mode, the vertical top end of each transmission shaft is horizontally connected with a support swing rod respectively, the vertical bottom end of one of the transmission shafts in one pair is horizontally connected with a driving swing rod, and the two pairs of transmission shafts are connected with each other in a synchronous belt transmission mode; each pair of two transmission shafts is sleeved with a gear respectively, and the two gears are connected with each other in a horizontal meshing mode; the inner end of the support swing rod is connected with the vertical top end of the transmission shaft through a connecting block, and the outer end of the support swing rod is connected with a bag hanging anti-falling assembly used for positioning the set package bags.

[0007] Further, a stand is sleeved with the transmission shaft at the outer periphery of each transmission shaft and used for providing support for the support swing rod, and the bottom of the stand is fixedly installed on the upper cover plate and / or the upper turntable frame; a set of support bearings is sleeved with the transmission shaft at both ends thereof, and a locking nut is sleeved between the support bearings and the vertical connecting block; the inner ring of each set of support bearings is connected with the transmission shaft in a matched mode, and the outer ring of each set of support bearings is connected with the inner wall of the stand in a matched mode.

[0008] Further, the inner end of the support swing rod is inserted into and fixed to the connecting block in a horizontal direction, and the top end of the transmission shaft is inserted into and fixed to the connecting block in a vertical direction, and the horizontal end and the vertical end of the connecting block are locked by bolts.

[0009] Further, the bag hanging anti-falling assembly comprises a U-shaped anti-falling assembly connecting block and an anti-falling assembly base vertically installed on the anti-falling assembly connecting block; the outer end of the support swing rod is inserted into the anti-falling assembly connecting block in a horizontal direction, and the support swing rod is clamped and locked by a bolt penetrating through the opening part of the U-shaped structure of the anti-falling assembly connecting block in a horizontal direction perpendicular to the insertion direction of the support swing rod; the anti-falling assembly base has a vertical through slot, a rotating shaft penetrates through a flaky anti-falling tongue to insert and suspend the anti-falling tongue into the through slot, and a compression spring is clamped between the side of the anti-falling tongue and the inner wall of the through slot.

[0010] Further, the horizontal inner end of the driving swing rod is sleeved with the vertical bottom end of the transmission shaft in a vertical direction, and the horizontal outer end of the driving swing rod is rotatably arranged with a guide wheel in a vertical direction; the rod body end of the driving swing rod is in a U-shaped structure, the end part has a vertical opening square hole, the vertical bottom end of the square transmission shaft is inserted into the square hole, and the transmission shaft is clamped and locked by a locking bolt penetrating through the opening part of the U-shaped structure of the rod body end.

[0011] Further, each set of bag support assembly is provided with two pairs of transmission shafts, the transmission shafts not connected with the driving swing lever in one pair of transmission shafts connected with the driving swing lever are vertically sleeved with a synchronous pulley at the bottom end, the transmission shafts in the other pair of transmission shafts vertically sleeved with a synchronous pulley at the bottom end are 180° symmetrical to the position of the transmission shafts not connected with the driving swing lever, and the two synchronous pulleys are connected with a synchronous belt in a closed loop.

[0012] Further, the lower guide rail assembly is connected to the vertical bottom of the upper turntable assembly, the lower guide rail assembly includes a lower support frame, an annular guide rail is installed at the vertical top of the lower support frame, a ring-shaped or circular trolley support plate is installed at the vertical top of the lower support frame, and a torsion arm mounting plate is arranged at the horizontal center position of the lower support frame.

[0013] Further, the annular guide rail is composed of a plurality of arc segments with different radii, and the distance of each arc segment from the rotation center of the upper turntable frame is not equal.

[0014] Based on the automatic bag building device using the above structure design, the present application simultaneously proposes the following automatic bag building control method:

[0015] The automatic bag building device is provided with a plurality of working stations including at least one bag hanging station, a component receiving station, and a bag building station;

[0016] The guide wheels of the upper turntable assembly run in the annular guide rail of the lower guide rail assembly, the driving swing lever swings to drive the transmission shafts of the bag support assembly to rotate, and the opening and closing control of the bag support assembly is realized;

[0017] The rotation control of the upper turntable assembly adopts a step-by-step action rhythm, and each rotation is one working station; when all the working stations complete the corresponding operation, the driving motor assembly drives the rotation of the upper turntable frame.

[0018] Further, the component receiving station is arranged vertically below the chute of the automatic bag building system to receive components, the support swing lever at this station swings to a straight state, and the bag opening of the bag support assembly is stretched to the maximum; at the bag building station, the support swing lever swings inward to a recovery state, and the bag opening of the bag support assembly is shrunk to the minimum to be bound and built by manual or automatic sealing equipment; at the bag hanging station, the support swing lever swings outward by a certain angle to hang the bag support assembly on the bag support assembly.

[0019] In summary, the automatic bag building device and its control method have the advantages of effectively solving the problems of high labor intensity and long time in the existing bag building process, and significantly improving the bag building efficiency and reducing the labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described in conjunction with the following drawings.

[0021] Figure 1 is a partial schematic view of an automatic bagging system according to the present application;

[0022] Figure 2 is a schematic view of a bagging bag;

[0023] Figure 2-1 is a schematic view of a bagging bag; Figure 2

[0024] Figure 3 is a schematic view of an upper turntable assembly;

[0025] Figure 4 is a schematic view of an upper turntable frame;

[0026] Figure 5 is a schematic view of a drive motor assembly;

[0027] Figure 6 is a schematic view of a bagging bag support assembly in an open state;

[0028] Figure 7 is a schematic view of a support swing lever assembly according to the present application; Figure 6

[0029] Figure 8 is a schematic view of a transmission relationship of a support swing lever assembly;

[0030] Figure 9 is a schematic view of a tongue pressing assembly in a tongue pressing open state;

[0031] Figure 9-1 is a schematic view of a tongue pressing assembly in a tongue pressing closed state;

[0032] Figure 10 is a schematic view of a vertical cross section of a tongue pressing assembly;

[0033] Figure 11 is a schematic view of a drive swing lever assembly;

[0034] Figure 12 is a schematic view of an assembly of an upper turntable assembly and a lower guide rail assembly (with a cover plate and a lower guard plate hidden);

[0035] Figure 13 is a schematic view of a lower guide rail assembly;

[0036] Figure 14 is a top view of a structure according to the present application; Figure 13

[0037] Figure 15 is a schematic view of a multi-station automatic bagging cycle; DETAILED DESCRIPTION

[0038] Example 1, as​​​Figures 1 to 15 As shown, the application proposes a new type of automatic package building device applied to the centralized package building processing of batch packages. Specifically, when the turnover box 200 carrying several packages is sorted and conveyed to the turnover device 300 through the conveying line 100, the turnover device 300 overturns the turnover box 200 to pour the packages in it into the chute 400, and the packages finally slide into the collection bag 500 suspended and positioned on the package building device. After the collection of the packages is completed, the collection bag is closed and tied on the package building device, and then conveyed to the next station.

[0039] The automatic package building device comprises an upper turntable assembly 1 and a lower guide rail frame assembly 2 connected in the vertical direction, a plurality of collection bag support assemblies 3 arranged on the upper turntable assembly 1 and capable of rotating around the vertical axis and used for suspending and positioning the collection bag 500.

[0040] Among them, the collection bag 500 can adopt a standard turnover woven bag, and a plurality of metal ring buckles 501 capable of being suspended on the collection bag support assembly 3 are symmetrically arranged at the top opening part of the collection bag 500.

[0041] The upper turntable assembly 1 comprises an upper turntable frame 101 connected with the collection bag support assembly 3 in the vertical direction, a plurality of upper turntable casters 102 and a driving motor assembly 103 installed and connected at the bottom of the upper turntable frame 101, and the upper turntable frame 101 is driven by the driving motor assembly 103 and can rotate around the vertical axis thereof; during the rotation of the plurality of collection bag support assemblies 3 carried by the upper turntable frame 101, the upper turntable casters 102 can provide vertical support and ensure that they always run on the same horizontal plane, thereby maintaining the stable performance of the collection bag 500 sequentially traveling between a plurality of stations;

[0042] The upper turntable frame 101 has a profile frame 101-1 composed of a plurality of profiles spliced with each other to form a regular hexagon, a driving motor assembly mounting plate 101-2 is arranged at the axial center of the profile frame 101-1, a caster mounting plate 101-3 for installing the upper turntable caster 102 and a support assembly mounting plate 101-4 for installing the bottom of the collection bag support assembly 3 are symmetrically arranged along the radial direction of the profile frame 101-1;

[0043] Further, an upper cover plate 104 is installed and connected at the top of the upper turntable frame 101, the upper cover plate 104 closes the upper turntable frame 101 from the vertical upper side and provides upward support and positioning for the collection bag support assembly 3; specifically, the support assembly mounting plate 101-4 at the bottom of the collection bag support assembly 3 is locked and fixed with the upper cover plate 104 and the upper turntable frame 101 in the vertical direction by means of bolts respectively penetrating the upper cover plate 104 and the support assembly mounting plate 101-4;

[0044] The servo motor 103-1 and the speed reducer 103-2 of the driving motor assembly 103 are installed on one side of the lower rail frame assembly 2, the driving shaft 103-3 connected to the output end of the speed reducer is vertically arranged, one end of the driving shaft 103-3 is fixedly connected to the driving motor assembly mounting plate 101-2, the other end of the driving shaft 103-3 is vertically arranged on one end of the torsion arm 103-4, and the other end of the torsion arm 103-4 is fixedly connected to the lower rail frame assembly 2; under the driving of the servo motor 103-1 and the speed reducer 103-2, the driving shaft 103-3 rotates while driving the upper rotating disc frame 101 to rotate around the vertical axis thereof, so that the bag collecting bag support assembly 3 sequentially moves between the various stations relative to the chute 400;

[0045] Each group of bag collecting bag support assemblies 3 comprises two pairs of transmission shafts 301 vertically arranged and transversely connected to each other, the vertical top end of each transmission shaft 301 is horizontally connected to a support swing rod 302, the vertical bottom end of one of the transmission shafts 301 in one pair is horizontally connected to a driving swing rod 305, and the two pairs of transmission shafts 301 are connected through a set of synchronous belts 306; each pair of two transmission shafts 301 is provided with a gear 301-1, and the two gears 301-1 are meshed and connected in the horizontal direction;

[0046] When the driving swing rod 305 drives one transmission shaft 301 to rotate, since the two transmission shafts 301 in each pair are connected through the gears 301-1, the other transmission shaft 301 is also driven to rotate and the rotating direction is opposite, so the swing directions of the two groups of support swing rods 302 connected to the vertical top ends of each pair of transmission shafts 301 are opposite, and finally the bag opening of the bag collecting bag 500 supported by the support swing rod 302 can be correspondingly opened or closed;

[0047] The inner end of the support swing rod 302 is connected to the vertical top end of the transmission shaft 301 through a connecting block 307, and the outer end thereof is connected to a bag hanging anti-falling assembly 303 for positioning the bag collecting bag 500; the horizontal inner end of the driving swing rod 305 is vertically arranged on the vertical bottom end of the transmission shaft 301, and the horizontal outer end thereof is vertically rotatably arranged with a guide wheel 305-1;

[0048] Further, a stand column 304 for providing support to the support swing rod 302 is arranged on the outer periphery of each transmission shaft 301, and the bottom of the stand column 304 is fixedly installed on the upper cover plate 104 and / or the upper rotating disc frame 101;

[0049] A set of support bearings 301-2 is arranged on the two ends of the transmission shaft 301, a locking nut 301-3 is arranged between the vertical direction of the support bearing 301-2 and the connecting block 307, and the locking nut 301-3 is used to limit the vertical position of the support bearing 301-2 on the transmission shaft 301; the inner ring of each set of support bearings 301-2 is connected to the transmission shaft 301, and the outer ring thereof is connected to the inner wall of the stand column 304.

[0050] In order to improve the stability of the connecting part between the support swing lever 302 and the transmission shaft 301, the inner end of the support swing lever 302 is inserted and fixed in the horizontal direction in the connecting block 307, the top end of the transmission shaft 301 is inserted and fixed in the vertical direction in the connecting block 307, and the horizontal end and the vertical end of the connecting block 307 are locked by bolts;

[0051] In order to improve the hanging and positioning stability of the collection bag 500, the bag hanging anti-falling assembly 303 comprises a U-shaped anti-falling assembly connecting block 303-1 and a vertical anti-falling assembly base 303-2 installed in the anti-falling assembly connecting block 303-1. The outer end of the support swing lever 302 is inserted into the anti-falling assembly connecting block 303-1 in the horizontal direction, and is clamped and locked by the bolt 303-5 penetrating the opening part of the U-shaped structure of the anti-falling assembly connecting block 303-1 in the horizontal direction perpendicular to the insertion direction of the support swing lever 302. The anti-falling assembly base 303-2 has a vertical through slot 303-6, and the rotating shaft 303-3 penetrates the anti-falling tongue 303-4 to insert and hang in the through slot 303-6, and the compression spring 303-7 is clamped between the side of the anti-falling tongue 303-4 and the inner wall of the through slot 303-6;

[0052] Through the axial connection of the rotating shaft 303-3, the anti-falling tongue 303-4 has a certain amount of elastic swing under the support of the compression spring 303-7. Under normal circumstances without external force, the anti-falling tongue 303-4 is in a state of elastic rising, and part of its structure is exposed to the through slot 303-6 (as shown in Figure 9 and Figure 10 The top part of the anti-falling assembly base 303-2 (the part with the through slot 303-6) has a slightly smaller shaft diameter than the inner diameter of the annular compression buckle 501 of the collection bag 500. When the collection bag 500 is hung on the collection bag support assembly 3, the top part of the anti-falling assembly base 303-2 is sleeved into the annular compression buckle 501, and the anti-falling tongue 303-4 is pressed to retract into the through slot 303-6. After the annular compression buckle 501 is completely buckled into the top part of the anti-falling assembly base 303-2, the anti-falling tongue 303-4 is again elastically raised to block the annular compression buckle 501 from falling out. When the collection bag 500 needs to be removed after the bag is completed, the annular compression buckle 501 can be taken out by pressing the anti-falling tongue 303-4;

[0053] The end of the lever body 305-0 of the drive swing lever 305 is in a U-shaped structure, which has a vertical opening square hole 305-2. The vertical bottom end of the transmission shaft 301, which is also square, is inserted into the square hole 305-2, and the locking bolt 305-3 penetrates the opening part of the U-shaped structure of the end of the lever body 305-0 to clamp and lock the transmission shaft 301;

[0054] In this embodiment, each set of bag support components 3 preferably has two pairs of drive shafts 301. One of the drive shafts 301 connected to the drive swing rod 305 has a synchronous pulley 306-1 sleeved on its vertical bottom end. The other pair of drive shafts 301, which is 180° symmetrical to the drive swing rod 305, has a synchronous pulley 306-1 sleeved on its vertical bottom end. The two synchronous pulleys 306-1 are connected in a closed loop by a synchronous belt 306.

[0055] like Figure 8 As shown, when the drive lever 305 swings along the horizontal plane, it drives drive shaft #1 of the same pair of drive shafts 301 to rotate around its vertical axis. Through gear 301-1 between these drive shafts 301, drive shaft #2 also rotates around its vertical axis, but in the opposite direction to drive shaft #1. Simultaneously, through the transmission relationship of the synchronous belt 306, the rotation of drive shaft #2 drives drive shaft #3 of another pair of drive shafts 301 to rotate synchronously, with both rotating in the same direction. Similarly, this pair of drive shafts 301 is also connected to two sets of gears 301-1, correspondingly driving drive shaft #4 to rotate around its vertical axis, with both rotating in opposite directions. Thus, among the two pairs of drive shafts 301… The rotation direction of drive shaft #1 is the same as that of drive shaft #3, and the rotation direction of drive shaft #2 is the same as that of drive shaft #4. The four ring buckles 501 of the collection bag 500 are respectively fastened into the anti-detachment component base 303-2 at the outer end of the support swing rod 302. Under the swing drive of drive swing rod 305, the same group of support swing rods 302 rotate in the same horizontal plane. When they swing outward to the horizontal state at the same time, the bag opening of the collection bag 500 is stretched to the maximum, so that it can receive the package dropped vertically from the top by the slide 400. When the package is collected, the same group of support swing rods 302 swing inward to the parallel state at the same time, so that the bag opening of the collection bag 500 is clamped, and then it can be tied by manual or automatic sealing equipment to complete the automatic bag building process.

[0056] The lower guide rail assembly 2 is located at the vertical bottom of the upper turntable assembly 1 to provide stable support during the rotation of the array bag support assembly 3 carried by the upper turntable frame 101. The lower guide rail assembly 2 includes a lower support frame 201, an annular guide rail 202, an annular or circular caster support plate 204 and a torque arm mounting plate 203 located at the horizontal center of the lower support frame 201 are installed at the vertical top of the lower support frame 201, several support feet 205 are installed at the vertical bottom of the lower support frame 201, and a lower guard plate 206 is vertically connected to the outside of the lower support frame 201.

[0057] The annular guide rail 202 is composed of several arc segments with different curvatures spliced ​​together. The distance between each arc segment and the rotation center of the upper turntable frame 101 is not equal. The guide wheel 305-1, which is axially mounted at the end of the drive swing rod 305, is nested and rotatably connected to the annular guide rail 202. Under the drive of the drive motor assembly 103, as the upper turntable frame 101 carries the bag support assembly 3 and the bag 500 and rotates around the vertical axis, the guide wheel 305-1 runs in the non-circular annular guide rail 202 and is subjected to different pressure values ​​and directions. This causes the drive swing rod 305 to swing around the connection point with the transmission shaft 301 in different directions and at different angles. Finally, the support swing rod 302 reciprocates in the horizontal plane and controls the opening and closing of the bag 500.

[0058] Based on the structural design of the above-mentioned automatic package creation device, this application also proposes an automatic package creation control method:

[0059] like Figure 15 As shown, the automatic bag-making device has 6 working stations, including the bag-hanging station 1 to the bag-making station. The guide wheel 305-1 of the upper turntable assembly 1 runs in the annular guide rail 202 of the lower guide rail frame assembly 2, driving the swing arm 305 to swing and drive the transmission shaft 301 of the bag support assembly 3 to rotate, thereby realizing the opening and closing control of the bag 500.

[0060] The receiving station is set vertically below the chute 400 of the automatic bagging system to receive materials. The support swing rod 302 at this station swings to a straight state, and the bag opening of the bag 500 is stretched to its maximum.

[0061] At the bag-building station, the support swing rod 302 swings inward to the retracted state, and the bag opening of the collection bag 500 is reduced to its smallest size to facilitate manual or automatic sealing equipment to tie the bag opening and build the bag.

[0062] Bag hanging stations 1 and 2 are manual bag hanging stations. The support swing rod 302 swings outward at a certain angle to facilitate manual bag hanging.

[0063] The rotation control of the upper turntable assembly 1 adopts a step-by-step action rhythm, rotating one workstation at a time; when all workstations have completed their corresponding operations, the upper turntable frame 101 is driven to rotate by the drive motor assembly 103.

[0064] As described above, the embodiments given in conjunction with the accompanying drawings are merely preferred solutions for achieving the objectives of this invention. Those skilled in the art can draw inspiration from this and directly derive other alternative structures that conform to the design concept of this invention. Other structural features derived therefrom should also fall within the scope of the solutions described in this invention.

Claims

1. An automatic package building apparatus characterized by comprising: The upper turntable assembly comprises an upper turntable frame vertically connecting the bag supporting assembly, a driving motor assembly and a plurality of upper turntable casters installed at the bottom of the upper turntable frame; the upper turntable frame is driven by the driving motor assembly to rotate along the vertical axis thereof; the upper turntable frame has a profile frame composed of a plurality of profiles connected to each other; The driving motor assembly comprises a servo motor and a speed reducer, and the output end of the speed reducer is connected to a driving shaft arranged vertically; one end of the driving shaft is fixedly connected to the profile frame, and the other end of the driving shaft is arranged on the torsion arm; The lower guide rail assembly is connected to the vertical bottom of the upper turntable assembly; the lower guide rail assembly comprises a lower support frame, an annular guide rail installed at the vertical top of the lower support frame, a ring-shaped or circular caster support plate, and a torsion arm mounting plate arranged at the horizontal center of the lower support frame; Each bag supporting assembly comprises two pairs of transmission shafts arranged vertically and connected to each other in the horizontal direction; the vertical top end of each transmission shaft is connected to a support swing rod in the horizontal direction; the vertical bottom end of one transmission shaft in one pair of transmission shafts is connected to a driving swing rod in the horizontal direction; the two pairs of transmission shafts are connected by a set of synchronous belts; each pair of transmission shafts is provided with a gear; the two gears are connected to each other in the horizontal direction; Each bag supporting assembly is provided with two pairs of transmission shafts; the transmission shaft not connected to the driving swing rod in one pair of transmission shafts connected to the driving swing rod is provided with a synchronous pulley at the vertical bottom end; the transmission shaft in the other pair of transmission shafts symmetrically arranged at a position 180° away from the position of the synchronous pulley is provided with a synchronous pulley at the vertical bottom end; the synchronous belts are connected in a closed loop between the two synchronous pulleys; The inner end of the support swing rod is connected to the vertical top end of the transmission shaft by a connecting block; the outer end of the support swing rod is connected to a bag hanging and anti-falling assembly for positioning the bag; A stand is provided around the outer periphery of each transmission shaft for providing support to the support swing rod; the bottom of the stand is fixedly installed on the upper cover plate and / or the upper turntable frame; 2. The automatic package building apparatus of claim 1, wherein: A set of support bearings is provided at both ends of the transmission shaft; a locking nut is provided between the vertical transmission shaft and the connecting block; the inner ring of each set of support bearings is connected to the transmission shaft; the outer ring of each set of support bearings is connected to the inner wall of the stand. The inner end of the support swing rod is inserted into and fixed to the connecting block in the horizontal direction; the top end of the transmission shaft is inserted into and fixed to the connecting block in the vertical direction; the horizontal end and the vertical end of the connecting block are locked by bolts.

3. The automatic package building apparatus of claim 2, wherein: The bag hanging and anti-falling assembly comprises a U-shaped anti-falling assembly connecting block and an anti-falling assembly base installed vertically on the anti-falling assembly connecting block; the outer end of the support swing rod is inserted into the anti-falling assembly connecting block in the horizontal direction; the support swing rod is clamped and locked by bolts penetrating the U-shaped opening of the anti-falling assembly connecting block in the horizontal direction perpendicular to the insertion direction of the support swing rod; 4. The automatic package building apparatus of claim 1, wherein: The anti-falling assembly base has a vertical through slot; a rotating shaft penetrates a flaky anti-falling tongue to insert and hang the anti-falling tongue in the through slot; a compression spring is clamped between the side of the anti-falling tongue and the inner wall of the through slot. The horizontal inner end of the driving swing rod is vertically inserted into the vertical bottom end of the transmission shaft; the horizontal outer end of the driving swing rod is rotatably arranged with a guide wheel in the vertical direction.

5. The automatic package building apparatus of claim 1, wherein: ​ The rod body end of the driving swing lever is a U-shaped structure, which has a vertical opening square hole. A square transmission shaft is vertically inserted into the square hole, and a locking bolt is used to pass through the opening of the U-shaped structure to clamp and lock the transmission shaft.

6. The automatic package building apparatus of claim 5, wherein: The annular guide rail is composed of a plurality of arc segments with different radii which are sequentially spliced, and the distance of each arc segment from the rotation center of the upper turntable frame is not equal.

7. An automatic package building control method using the automatic package building apparatus according to any one of claims 5 or 6, characterized by: The automatic bag building device is provided with a plurality of work stations including at least one bag hanging station, a connecting piece station and a bag building station. The guide wheel of the upper turntable assembly runs in the annular guide rail of the lower guide rail assembly, and the driving swing lever swings to drive the transmission shaft of the bag supporting assembly to rotate, thereby achieving the opening and closing control of the bag. The rotation control of the upper turntable assembly adopts a step-by-step action rhythm, and rotates one work station at a time. When all work stations complete the corresponding operation, the upper turntable frame is driven to rotate by the driving motor assembly.

8. The automatic package building control method of claim 7, wherein: The connecting piece station is arranged below the chute of the automatic bag collecting system to receive the connecting piece. The supporting swing lever at this station swings to a straight line state, and the bag opening of the bag is stretched to the maximum. At the bag building station, the supporting swing lever swings inward to the recovery state, and the bag opening of the bag is shrunk to the minimum to be sealed by manual or automatic sealing equipment. At the bag hanging station, the supporting swing lever swings outward by a certain angle to hang the bag on the bag supporting assembly.

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