A method for filling materials into continuous packaging materials

Abstract

The present invention discloses a method for filling materials into continuous packaging materials, which relates to the technical field of material filling and packaging processes. After folding the continuously conveyed packaging materials in half, the present invention first longitudinally seals the packaging materials to form continuous bags, and inputs the continuous bags into an arc conveying path. After the continuous bags are input into the arc conveying path, each bag part in the continuous bags is successively opened by using the principle of vacuum negative pressure. After the bag mouth of the bag part is opened, a filling rod is inserted into the bag part with the opened bag mouth. The improved filling method provided by the present invention can avoid a plurality of longitudinally sealed components arranged circumferentially in the arc conveying path, save the cost of implementation equipment, and also avoid problems such as deformation or melting of the packaging materials. At the same time, the filling rod only needs to move up and down and perform circular motion, and does not need to rotate around the lifting shaft. This method is easier to implement, and the cost of implementation equipment can also be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of material filling and packaging processes, and more particularly to a method for filling materials into continuous packaging materials. Background Art

[0002] The known existing method for filling materials into continuous packaging materials is (as shown in Figure 1 ) to continuously supply the strip-shaped packaging material 103 in a state of being folded in half with the crease facing downward. As the conveying path 100 of the packaging material, there is provided an arc conveying path 101 that horizontally extends in a substantially arc shape when viewed from above and an extended conveying path 102 connected to the end of the arc conveying path; on the arc conveying path 101, the packaging material 103 is conveyed circumferentially while being held by a plurality of longitudinal sealing members 105 arranged at intervals in the circumferential direction. Each longitudinal sealing member 105 includes a pair of sealing rods 106 that clamp the packaging material 103, and heat-seals the portion of the packaging material held between the pair of sealing rods 106. Thus, a longitudinal seal 107 extending vertically from the upper end to the lower end is formed in the packaging material.

[0003] In the packaging material 103, as shown in Figure 3 , a plurality of longitudinal seals 107 are formed at given intervals along the conveying direction. Thus, a bag portion 108 that is open upward is formed between adjacent longitudinal seals 107 in the packaging material 103. In the arc conveying path 101, the filling material supplied from above is filled into each bag portion 108 through a filling rod 109.

[0004] The equipment for implementing the above-known existing method for filling materials into continuous packaging materials is a filling and packaging machine. Prior art documents: Patent Document 1 - Japanese Patent Laid-Open No. 2006-021795; Patent Document 2 - CN110356607A "Filling and Packaging Machine".

[0005] To implement the above method, the filling and packaging machine needs to provide a plurality of longitudinal sealing members that can longitudinally seal the continuously supplied packaging materials, and also needs to provide a filling rod that can be inserted into the folded packaging material to fill materials therein.

[0006] As shown in Figure 1 and Figure 2 , during the process of the filling rod 109 making a circular motion together with the bag portion 108, the filling rod 109 also moves up and down under the drive of the lifting shaft 110, and this movement is realized by a lifting cam inside the machine frame; at the same time, the filling rod 109 also rotates around the lifting shaft 110 under the drive of the lifting shaft 110, and this is realized by a rotating cam inside the machine frame. From Figure 2As can be seen from the structure shown, the filling rod 109 is inserted after the continuously conveyed packaging material 103 is folded in half. When the sealing rod 106 longitudinally seals the continuously conveyed packaging material, the filling rod 109 is already inside the bag portion. The reason why the filling rod 109 needs to move up and down with the lifting shaft 110 is to facilitate insertion into the folded packaging material 103; and the reason why the filling rod 109 needs to rotate with the lifting shaft 110 is to smoothly pull out the filling rod 109 from the bag portion 108, and at the same time, to widen the distance between the filling rods 109, facilitating the insertion of the front filling rod 109 into the folded packaging material and realizing the continuous operation of the filling rod 109.

[0007] When implementing the above-known existing method of filling materials into continuous packaging materials, the following problems exist:

[0008] 1. In the arc-shaped conveying path of the strip-shaped packaging material, multiple pairs of sealing rods corresponding to multiple longitudinal sealing components are required to clamp the packaging material to achieve longitudinal sealing of the strip-shaped packaging material. When the multiple pairs of sealing rods rotate in a circle, the packaging material needs to be clamped at the starting point of the arc-shaped conveying path and released at the end point of the arc-shaped conveying path. The clamping and release of the sealing rods need to be realized by corresponding cam mechanisms, with a relatively complex structure and high equipment cost.

[0009] 2. When the filling rod moves in an arc with the bag portion, in order to avoid interfering with the folded packaging material, before the filling rod enters the bag portion, it needs to move up and down with the lifting shaft and rotate around the lifting shaft. At least two cams, namely a lifting cam and a rotating cam, are required to achieve the above two actions, with a relatively complex structure and high equipment cost.

[0010] 3. Between the starting point and the end point of the arc-shaped conveying path, the sealing rod always maintains the state of clamping the packaging material (limited by the cam track of the sealing rod, the sealing rod cannot be opened in this movement track section). If the continuous operation of the rotary filling and packaging machine stops, the longitudinal sealing components between the starting point and the end point of the arc-shaped conveying path maintain the state of clamping the packaging material, and the residual heat of the sealing rod will cause the packaging material to deform or melt. Summary of the Invention

[0011] In order to overcome the defects and deficiencies existing in the above-mentioned prior art, the present invention provides a method for filling materials into a continuous packaging material. The object of the present invention is to propose an improved method for filling materials to overcome the problems that the existing method for filling materials has high equipment costs during implementation and is prone to deformation or melting of the packaging material after shutdown. After folding the continuously conveyed packaging material in half, longitudinal sealing of the packaging material is performed before entering the arc conveying path to form a continuous bag body. The continuous bag body is input into the arc conveying path. After the continuous bag body is input into the arc conveying path, each bag part in the continuous bag body is sequentially opened by using the principle of vacuum negative pressure. After the bag mouth of the bag part is opened, the filling rod is inserted into the bag part with the opened bag mouth. The improved filling method provided by the present invention is to perform longitudinal sealing on the packaging material first and then enter the arc conveying path, which can avoid a plurality of longitudinally arranged sealing components circumferentially arranged in the arc conveying path, save the implementation equipment cost, and also avoid the problem of deformation or melting of the packaging material caused by preheating of the longitudinally arranged sealing components during shutdown. At the same time, the filling rod only needs to move up and down and rotate circumferentially, and does not need to rotate around the lifting shaft. This structure is easier to implement, and the implementation equipment cost can also be effectively reduced.

[0012] In order to solve the problems existing in the above-mentioned prior art, the present invention is realized through the following technical solutions.

[0013] The present invention provides a method for filling materials into a continuous packaging material, and the method includes the following steps:

[0014] S1. The strip-shaped packaging material is continuously supplied in a state of being folded in half with the crease facing downward; the conveying path of the continuously supplied packaging material is provided with an arc conveying path that horizontally extends in an arc shape when viewed from above, a packaging material supply path connected to the starting point of the arc conveying path, and an extended conveying path connected to the ending point of the arc conveying path;

[0015] S2. Before the folded packaging material enters the arc conveying path, longitudinal sealing is performed on the packaging material at a given interval along the conveying direction of the folded packaging material, and an upwardly open bag part is formed between adjacent longitudinal seals; the bag parts are continuously formed, and the packaging material becomes a continuously supplied bag body;

[0016] S3. The continuously supplied bag body continues to be conveyed into the arc conveying path. In the arc conveying path, the packaging materials on both sides of the bag part in the continuously supplied bag body are respectively adsorbed by negative pressure. Under the action of negative pressure adsorption on both sides, the bag mouth of the bag part is opened; when the continuously supplied bag body is conveyed circumferentially along the arc conveying path, the bag mouths of the bag parts in the continuously supplied bag body are sequentially opened; the continuously supplied bag body is held by negative pressure along the arc conveying path and is conveyed circumferentially along the arc conveying path at the same time;

[0017] S4. Insert the stuffing rod into the bag part with the opened bag mouth, and the stuffing rod moves synchronously with the conveying trajectory of the bag part in the arc conveying path; in the arc conveying path, fill the bag part with the opened bag mouth with materials through the stuffing rod; after the material filling is completed, pull out the stuffing rod from the bag part before the bag part enters the extended conveying path.

[0018] Further preferably, the arc conveying path is a horizontally extending arc conveying path in the shape of an arbitrary arc between a 1 / 4 arc and a 3 / 4 arc when viewed from above.

[0019] Even more preferably, the arc conveying path is a horizontally extending arc conveying path in the shape of a 1 / 2 arc when viewed from above.

[0020] In a further preferred solution, in step S3, the packaging materials on both sides of the bag part in the continuously supplied bag bodies are respectively adsorbed by negative pressure. Specifically, a bag-sucking turntable mechanism is arranged inside the arc conveying path, and the arc conveying path is a part of an arc section on the bag-sucking turntable mechanism; the continuously conveyed bag bodies are held by the bag-sucking turntable mechanism and conveyed circumferentially as the bag-sucking turntable mechanism rotates; a follow-up adsorption mechanism is arranged outside the arc conveying path, and the follow-up adsorption mechanism rotates relative to the bag-sucking turntable mechanism with the same linear velocity of rotation; the continuously supplied bag bodies pass through between the follow-up adsorption mechanism and the bag-sucking turntable mechanism, the follow-up adsorption mechanism adsorbs the packaging material outside the bag part, and the bag-sucking turntable mechanism adsorbs the packaging material inside the bag part. As the two rotate, the packaging materials on both sides of the bag part are separated, and the bag mouth of the bag part is opened.

[0021] Even more preferably, the bag-sucking turntable mechanism includes a bag-sucking turntable and a bag-sucking driving component for driving the bag-sucking turntable to rotate. The bag-sucking turntable includes a turntable body, and a plurality of bag-sucking areas are evenly arranged on the circumferential surface of the turntable body. Adsorption holes for adsorbing the packaging material on one side of the bag body are arranged in the bag-sucking areas.

[0022] Even more preferably, the follow-up adsorption mechanism includes an adsorption column and an opening bag driving component for driving the adsorption column to rotate; a plurality of opening bag areas are arranged on the circumferential surface of the adsorption column and are matched with the bag-sucking areas on the bag-sucking turntable. A plurality of opening bag negative pressure holes are opened in the opening bag areas, and the opening bag areas are arranged opposite to the bag-sucking areas on the bag-sucking turntable.

[0023] In an even more preferred solution, in step S4, insert the stuffing rod into the bag part with the opened bag mouth, and the stuffing rod moves synchronously with the conveying trajectory of the bag part in the arc conveying path. Specifically,

[0024] The stuffing rod is driven by a lifting shaft to move up and down so as to insert into and pull out from the bag part with the bag mouth opened; on the turntable body, there are shaft holes for assembling the lifting shafts, the number of the lifting shafts is the same as that of the stuffing rods, the number of the stuffing rods is the same as that of the bag suction areas on the turntable body, and they are in one-to-one correspondence; the lifting shafts are evenly distributed along the axial direction of the axis of the turntable body and move circumferentially as the turntable body rotates.

[0025] In a further preferred solution, the bag suction driving assembly is a hollow rotary table, and the lower end of the bag suction turntable is assembled on the rotating part of the hollow rotary table and rotates with the rotating part of the hollow rotary table.

[0026] In a further preferred solution, an air distribution plate is arranged on the hollow rotary table, the air distribution plate is fixedly assembled on the fixed part of the hollow rotary table, a negative pressure cavity is arranged inside the air distribution plate, and communication grooves communicated with the adsorption holes on the bag suction areas are formed on the surface of the air distribution plate.

[0027] In a further preferred solution, the air distribution plate includes an air distribution plate base and an air distribution plate cover, the air distribution plate base is fixedly assembled on the fixed part of the hollow rotary table, the air distribution plate cover is hermetically assembled on the air distribution plate base, and the communication grooves are arranged on the air distribution plate cover.

[0028] In a further preferred solution, the air distribution plate cover is made of tin-copper alloy material, a plurality of holes are drilled on the top surface of the air distribution plate cover, and graphite is poured into the holes.

[0029] In a further preferred solution, the holes are blind holes.

[0030] In a further preferred solution, a plurality of bag suction modules are evenly arranged on the circumferential surface of the turntable body, and the bag suction modules correspondingly form the bag suction areas on the circumferential surface of the turntable body.

[0031] In a further preferred solution, the bag suction module includes a module body, the outer side surface of the module body is a concave surface, the adsorption holes are arranged on the concave surface, a communication hole for docking with the communication groove on the air distribution plate is arranged at the bottom of the module body, and the adsorption holes are communicated with the communication hole.

[0032] In a further preferred solution, the follow-up adsorption mechanism further includes an adsorption column mounting seat, the adsorption column and the bag opening driving assembly are both assembled on the adsorption column mounting seat, and an air distribution plate is arranged between the lower end surface of the adsorption column and the top surface of the adsorption column mounting seat.

[0033] The bag opening driving assembly includes a servo motor and a speed reducer.

[0034] In a further preferred embodiment, in step S2, the longitudinal sealing of the packaging material specifically means that a pair of rotatable longitudinal sealing rollers are provided on both sides of the packaging material supply path. A plurality of longitudinal sealing tool holders are evenly assembled in the circumferential direction of the longitudinal sealing rollers. The folded packaging material passes between the pair of rotatable longitudinal sealing rollers, and the longitudinal sealing rollers on both sides perform longitudinal sealing on the folded packaging material at a given interval.

[0035] In a further preferred embodiment, in step S2, the longitudinal sealing of the packaging material specifically means that a translation assembly that reciprocates along the conveying direction is provided below the folded packaging material. A plurality of groups of longitudinal sealing tool groups arranged side by side along the conveying direction of the folded packaging material are provided on the translation assembly. Each group of longitudinal sealing tool groups includes two relatively moving longitudinal sealing tool holders, and a given interval is provided between adjacent longitudinal sealing tool groups; the folded packaging material passes between the two relatively moving longitudinal sealing tool holders, and the plurality of groups of longitudinal sealing tool groups move synchronously to perform longitudinal sealing on the folded packaging material at a given interval.

[0036] Compared with the prior art, the beneficial technical effects brought by the present invention are as follows:

[0037] 1. The method for filling materials into a continuous packaging material provided by the present invention, compared with the known methods for filling materials, longitudinally seals the folded packaging material first on the packaging material supply path after the strip-shaped packaging material forms a folded state and before entering the starting point of the arc conveying path, and then inputs the continuous bags formed with longitudinal sealing into the arc conveying path. The present invention performs longitudinal sealing first. In the arc conveying path, negative pressure is used to hold and circumferentially convey the continuous bags, avoiding the circumferential movement of the longitudinal sealing member along with the longitudinal seal on the continuous bag. The sealing rod that moves in a circle along the arc conveying path and its corresponding cam structure can be omitted, which can reduce the cost of the sealing rod structure. And due to the omission of the sealing rod and cam structure, when the equipment stops, there will be no problem of the packaging material being deformed or melted due to the residual heat of the sealing rod.

[0038] 2. Based on the negative pressure principle, the present invention opens the bag mouth of the bag part. The filling rod only needs to be vertically inserted into the bag part with the opened bag mouth. The filling rod only needs to perform a lifting action and does not need to rotate around the lifting shaft. In the prior art, the filling rod is inserted into the arc conveying path before the folded packaging material enters the starting point of the arc conveying path. The filling rod needs to move to the tangential direction of the arc conveying path and maintain a movement trajectory in the same direction as the tangential direction. Therefore, the filling rod needs to rotate around the lifting shaft so that the filling rod can have a movement trajectory with one end tangent to the starting point of the arc conveying path. However, in the present application, the bag mouth is opened in the arc conveying path, and the filling rod only needs to be inserted into the bag part and does not need to have a movement trajectory tangent to the starting point of the arc conveying path. From the perspective of structural implementation, the rotary cam that enables the filling rod to rotate around the lifting shaft can be omitted, the equipment structure can be simplified, and the equipment cost can be effectively controlled and reduced.

[0039] 3. The present invention uses a bag-sucking turntable mechanism and a follow-up adsorption mechanism to perform the action of opening the bag mouth of the bag part in step S3. Its structure is simple, and it can smoothly open the bag mouths of the bag parts passing through between the two in sequence, and also ensures that the bag opening efficiency and filling efficiency of the bag body are not affected. The arc conveying path is realized by a partial arc on the bag-sucking turntable mechanism, and the continuously supplied bag body is held on the circumferential surface of the bag-sucking turntable mechanism by means of negative pressure adsorption; the follow-up adsorption mechanism adsorbs the packaging material on the other side of the bag part from the other side of the bag part. After the follow-up adsorption mechanism and the bag-sucking turntable mechanism rotate relative to each other, the bag mouth of the bag part can be opened, which is convenient for the subsequent insertion of the filling rod. Compared with the implementation structure of the known existing filling method, the same conveying efficiency and filling efficiency can be maintained.

[0040] 4. The present invention uses a relative rotation method to perform a negative pressure bag opening operation on the bag body passing through between the adsorption turntable mechanism and the follow-up adsorption mechanism, opening the bag mouth of one bag body each time, with high bag opening efficiency, accurate bag opening, and high continuity.

[0041] 5. A hollow rotary platform is used as the driving mechanism of the adsorption turntable to ensure the stability of the operation of the adsorption turntable. At the same time, it also saves more assembly space for other components. The lifting shaft and lifting cam for driving the filling rod to lift can be assembled inside the hollow rotary platform, making the overall structure more compact. The present invention also assembles the lifting shaft of the filling rod on the turntable body, and it can move circumferentially with the turntable body. It can share a power with the turntable body, and the lifting of the lifting shaft is completely controlled by the lifting cam. The equipment has a high integration degree and a simple structure.

[0042] 6. The present invention provides negative pressure suction for the suction bag area on the adsorption turntable through the air distribution disc, ensuring the stability of the negative pressure suction. Compared with the existing negative pressure vacuum disc structure (a negative pressure air path communicating with the adsorption holes is arranged inside the vacuum disc), it saves the middle space and also avoids the situation where some suction bag areas fail due to the blockage of the internal air path of the negative pressure vacuum disc structure. A communication groove is opened on the air distribution disc of the present application, which is only communicated with the adsorption holes of the suction bag area on the circumferential section of the adsorption turntable at a set angle. When it is communicated with the communication groove, adsorption occurs, and when it is not communicated, there is no adsorption, avoiding the repeated switching of negative pressure and providing more stable negative pressure.

[0043] 7. Since relative rotation occurs between the air distribution disc and the adsorption turntable, to avoid the wear of the air distribution disc, the air distribution disc is divided into an air distribution disc base and an air distribution disc cover. After wear occurs, only the air distribution disc cover can be replaced, without the need for overall replacement, reducing the maintenance cost.

[0044] 8. The present invention uses a tin-copper alloy material to make the air distribution disc cover, which is more wear-resistant and extends the service life of the air distribution disc cover. Graphite is poured on the air distribution disc cover to reduce the friction between the adsorption turntable and the air distribution disc cover, reduce the wear of the air distribution disc cover, and further improve its service life. The blind hole structure is used to pour graphite to avoid the graphite falling off from the through hole after a period of wear. With the blind hole structure, the graphite will not fall off from the hole.

[0045] 9. The follow-up adsorption mechanism of the present invention uses an adsorption column mounting seat to assemble the adsorption column and the bag-opening drive assembly, and the assembly structure is simple. At the same time, it is also convenient to assemble the air distribution disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is the structural schematic diagram of the existing known method for filling materials;

[0047] Figure 2 is the structural schematic diagram of a filling and packaging machine for implementing the existing known method for filling materials;

[0048] Figure 3 is the structural schematic diagram of a continuous bag body;

[0049] Figure 4 is the flow schematic diagram of the filling material method of the present invention;

[0050] Figure 5 is the structural principle of the filling material method of the present invention Figure 1 ;

[0051] Figure 6 is the structural principle of the filling material method of the present invention Figure 2 ;

[0052] Figure 7 is an implementation structural schematic diagram for opening the bag mouth in the filling material method of the present invention;

[0053] Figure 8 Another schematic structural diagram for opening the bag mouth of the filling material method of the present invention;

[0054] Figure 9 In the present invention Figure 7 Top view structural diagram;

[0055] Figure 10 In the present invention Figure 9 Cross-sectional view taken along line A-A;

[0056] Figure 11 Schematic structural diagram of the turntable body of the present invention;

[0057] Figure 12 Schematic structural diagram of the hollow rotating platform of the present invention;

[0058] Figure 13 Schematic structural diagram of the air distribution disc in the present invention;

[0059] Figure 14 Perspective structural diagram of the bag suction module of the present invention;

[0060] Figure 15 Schematic structural diagram of the follower adsorption mechanism in the present invention;

[0061] Reference numerals: 100, conveying path of packaging material; 101, arc conveying path; 102, extended conveying path; 103, packaging material; 104, crease; 105, longitudinal sealing member; 106, sealing rod; 107, longitudinal seal; 108, bag portion; 109, filling rod; 110, lifting shaft; 111, main body frame; 112, folding portion; 113, filling portion; 114, packaging material supply portion; 115, bag mouth; 116, bag body; 117, top seal; 118, folding guide.

[0062] 1. Bag suction turntable mechanism; 2. Follower adsorption mechanism; 3. Bag suction turntable; 4. Adsorption column; 5. Bag opening drive assembly; 6. Turntable body; 7. Bag suction area; 8. Adsorption hole; 9. Bag opening area; 10. Bag opening negative pressure hole; 11. Hollow rotating platform; 12. Rotating member; 13. Air distribution disc; 14. Fixed member; 15. Negative pressure chamber; 16. Communication groove; 17. Air distribution disc base; 18. Air distribution disc cover; 19. Bag suction module; 20. Module body; 21. Concave surface; 22. Communication hole; 23. Adsorption column mounting seat; 24. Negative pressure air path; 25. Shaft hole; 26. Longitudinal sealing roller; 27. Longitudinal sealing knife seat; 28. Translation assembly. Detailed implementation manners

[0063] The following further elaborates on the technical solution of the present invention in conjunction with the accompanying drawings of the specification and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0064] A known existing method of filling materials into continuous packaging materials is (as Figure 1 shown) to continuously supply the strip-shaped packaging material 103 in a state of being folded in half with the crease 104 facing downward. As the conveying path 100 of the packaging material, an arc conveying path 101 that horizontally extends in an arc shape when viewed from above and an extended conveying path 102 connected to the end point of the arc conveying path are provided; on the arc conveying path 101, the packaging material 103 is conveyed circumferentially while being held by a plurality of longitudinal sealing members 105 arranged at intervals in the circumferential direction. Each longitudinal sealing member 105 includes a pair of sealing rods 106 for clamping the packaging material, and heat-seals the portion of the packaging material clamped between the pair of sealing rods 106. Thus, a longitudinal seal 107 extending vertically from the upper end to the lower end is formed in the packaging material 103. In the packaging material, as Figure 3 shown, a plurality of longitudinal seals 107 are formed at given intervals along the conveying direction. Thus, a bag portion 108 that is open upward is formed between adjacent longitudinal seals 107 of the packaging material. In the arc conveying path 101, the filling material supplied from above is filled into each bag portion 108 through a filling rod 109.

[0065] The equipment for implementing the above-known method of filling materials, as shown in the appendix Figure 1 shown, is a rotary filling and packaging machine. In this packaging machine, generally as the conveying path 100 of the packaging material, an arc conveying path 101 that horizontally extends in an arc shape when viewed from above and an extended conveying path 102 connected to the end point of the arc conveying path 101 are provided.

[0066] As Figure 1 and Figure 2 shown, in the filling and packaging machine, a packaging material 103 made of a strip-shaped film or sheet is used, and through the filling and packaging machine, a continuous bag body 116 (refer to the appendix of the specification Figure 3 ) is formed in the packaging material.

[0067] In order to form the continuous bag body 116, the packaging material 103 is conveyed in the horizontal direction while being folded in half at the center in its short side direction to form a downwardly convex crease 104; the folded packaging material is bonded or sealed at given intervals in its length direction.

[0068] Thus, as Figure 3As shown, a plurality of longitudinal seals 107 extending in the vertical direction are formed in the packaging material 103, and a bag portion 108 opening upward is formed between adjacent longitudinal seals 107. In the length direction of the packaging material, the bag portions 108 are continuously formed, and the filling material supplied from above is filled into each bag portion 108.

[0069] Next, a top seal 117 is formed at the upper edge portion of the packaging material by bonding or sealing, thereby closing the upper end opening of the bag portion 108 filled with the filling material. Thus, a continuous finished bag having a plurality of continuously sealed bag portions is formed.

[0070] The continuous finished bag is separated, for example, by cutting along the longitudinal seal between adjacent bag portions into a finished bag composed of a single finished bag or a plurality of continuous bag portions, or is processed into a finished bag with a tear notch punched along the longitudinal seal between adjacent bag portions.

[0071] As Figure 2 shown, the filling and packaging machine has a main body frame 111 as a support for supporting each of the components described below. The main body frame 111 is fixed to a horizontal surface such as the floor of a building. The filling and packaging machine also has a packaging material supply unit 114 that supplies the packaging material, and a folding unit 112 that guides the packaging material supplied from the packaging material supply unit 114 in the horizontal direction and folds the packaging material 103 into a V shape with the center line extending in the length direction of the packaging material as a fulcrum.

[0072] As Figure 2 shown, the filling and packaging machine further includes a filling material filling unit 113 that thermally bonds a pair of packaging material sheets of the packaging material folded by the folding unit at intervals in the length direction, thereby continuously forming the above-mentioned longitudinal seals 107 and bag portions 108 and filling the filling material into each bag portion; a filling material supply unit that supplies the filling material to the filling material filling unit; a top seal unit that thermally bonds the upper ends of the bag portions filled with the filling material to form the above-mentioned top seal 117; and a cutting unit that forms a tear notch in the longitudinal seal portion between adjacent bag portions.

[0073] As Figure 2 shown, the filling material filling unit has: a fixed table (not shown) fixed to the main body frame 111; and a rotating table (not shown) supported by the main body frame 111 so as to be rotatable about an axis extending in the vertical direction. The fixed table is composed of, for example, a circular plate and is disposed substantially perpendicular to the vertical direction. The rotating table is composed of, for example, an annular plate and is disposed substantially perpendicular to the vertical direction. The rotating table and the fixed table are concentrically disposed. The rotating table is rotationally driven about the axis by a drive source such as an electric motor (not shown).

[0074] As Figure 2As shown, a plurality of pairs (n pairs: n is an integer) of longitudinal sealing rods 106 are arranged on the rotary table at a given interval (angular interval of 360 degrees / n) on the circumference centered on the axis. Each pair of longitudinal sealing rods 106 has: a fixed sealing rod fixed to the rotary table; and a movable sealing rod arranged radially outside the fixed sealing rod.

[0075] The fixed sealing rods are arranged on the rotary table to extend in the vertical direction. The radially outer surface of the fixed sealing rod becomes a heating surface arranged on the sealing reference circle centered on the above-mentioned axis. In addition, the diameter of the sealing reference circle can be fixed to a constant value, or the longitudinal sealing rod pair can be moved radially by a given adjustment mechanism (not shown), so that the diameter of the sealing reference circle can be adjusted.

[0076] As Figure 1 shown, an arc-shaped conveying path 101 forming part of the packaging material conveying path is formed in the filling material filling portion. The arc-shaped conveying path 101 is formed to extend while curving in an arc shape in a plan view along the circumferential region of the above-mentioned sealing reference circle from a given starting point to a given ending point. The arc-shaped conveying path is formed over a region of more than half of the circumference of the sealing reference circle.

[0077] As Figure 1 and Figure 2 shown, the movable sealing rod is connected to the fixed sealing rod via a shaft extending in a direction parallel to the tangent of the sealing reference circle. The movable sealing rod is arranged so as to be pivotally rotatable about the above-mentioned shaft, so that it can reciprocate between a sealing position where it is pressed against the heating surface of the fixed sealing rod with the packaging material interposed therebetween and a non-sealing position where it is separated from the heating surface of the fixed sealing rod and tilted outward.

[0078] The heating surface of the movable sealing rod is constituted by a facing surface facing the heating surface of the fixed sealing rod at the sealing position. The movable sealing rod engages with a guiding mechanism fixed to the main body frame so that the angular position about the above-mentioned shaft changes according to the circumferential position about the above-mentioned shaft. Thus, the movable sealing rod is arranged in the sealing position when it is located on the arc-shaped conveying path in the above-mentioned sealing reference circle, and is separated from the heating surface of the fixed sealing rod when it is located in other circumferential regions.

[0079] As Figure 2 shown, the filling material filling portion 113 has a plurality of lifting shafts 110 extending in the vertical direction parallel to the axis. The plurality of lifting shafts 110 are connected to the rotary table via lifting cams described later, so as to rotate about the axis together with the rotary table.

[0080] The plurality of lifting shafts 110 are arranged at fixed intervals on the circumference centered on the axis corresponding to the plurality of longitudinal sealing members 105 respectively.

[0081] Above the lifting shaft 110, a funnel-shaped stuffing rod 109 is connected via an arm. The stuffing rod 109 is arranged on the above-mentioned sealing reference circle in a plan view, and is arranged at the central part between adjacent longitudinal sealing parts in the circumferential direction around the axis.

[0082] The above structure is a filling structure for implementing a method of filling materials into a continuous packaging material known in the prior art. Based on the above existing structure and method, the present invention proposes an improved method to overcome the problems that the existing method of filling materials has high equipment cost and is prone to deformation or melting of the packaging material after shutdown.

[0083] Embodiment 1

[0084] As a preferred embodiment of the present invention, referring to the attached Figure 4 As shown, this embodiment discloses a method of filling materials into a continuous packaging material, and the method includes the following steps:

[0085] S1. The strip-shaped packaging material 103 is continuously supplied in a state of being folded in half with the crease 104 facing downward; the conveying path 100 of the continuously supplied packaging material is provided with an arc conveying path 101 that horizontally extends in a substantially arc shape in a plan view, a packaging material supply path connected to the starting point of the arc conveying path, and an extended conveying path 102 connected to the ending point of the arc conveying path.

[0086] S2. Before the folded packaging material 103 enters the arc conveying path 101, the packaging material is longitudinally sealed at a given interval along the conveying direction of the folded packaging material 103, and a bag portion 108 that is open upward is formed between adjacent longitudinal seals 107; the bag portions 108 are continuously formed, and the packaging material becomes a continuously supplied bag body 116.

[0087] S3. The continuously supplied bag body 116 continues to be conveyed into the arc conveying path 101. In the arc conveying path 101, the packaging materials on both sides of the bag portion 108 in the continuously supplied bag body 116 are respectively adsorbed by negative pressure. Under the action of the negative pressure adsorption on both sides, the bag mouth 115 of the bag portion 108 is opened; when the continuously supplied bag body 116 is conveyed circumferentially along the arc conveying path, the bag mouths of the bag portions in the continuously supplied bag body are sequentially opened; the continuously supplied bag body 116 is held by negative pressure along the arc conveying path and is conveyed circumferentially along the arc conveying path at the same time.

[0088] In this embodiment, the bag portion 108 can be opened at the starting point of the arc conveying path or after the starting point, and can be adjusted according to the specific working conditions;

[0089] S4. Insert the stuffing rod 109 into the bag portion 108 with the opened bag mouth 115, and the stuffing rod 109 moves synchronously with the conveying trajectory of the bag portion 108 in the arc conveying path; in the arc conveying path 101, fill the material into the bag portion 108 with the opened bag mouth through the stuffing rod 109; after the material filling is completed, pull out the stuffing rod 109 from the bag portion 108 before the bag portion 108 enters the extended conveying path 102.

[0090] After the material filling is completed, the stuffing rod 109 can be pulled out from the bag portion. The specific pulling-out position depends on the trajectory of the lifting cam and can also be adjusted according to the actual working conditions.

[0091] Among them, the strip-shaped packaging material 103 is continuously supplied in a state of being folded in half with the crease 104 facing downward; its structure can be the same as that in CN110356607A "filling and packaging machine", that is, the bag supply mechanism is the prior art.

[0092] The folding portion 112 that folds the strip-shaped packaging material 103 is the same as the structure of the prior art. As Figure 2 shown, the folding portion 112 has a folding guide 118, and the folding guide 118 contacts the upper surface of the packaging material conveyed in a substantially horizontal direction from the last roller of the packaging material supply portion 114. The folding guide 118 has a substantially V-shaped cross-sectional shape. The upper opening angle (the upper opening angle of the V-shaped cross-section) of the folding guide gradually decreases along the packaging material conveying direction as it moves away from the last roller.

[0093] In this embodiment, on the packaging material supply path from the formation of the folded state of the strip-shaped packaging material to before entering the starting point of the arc conveying path, the longitudinally folded packaging material is first longitudinally sealed, and then the continuous bag body formed with the longitudinal seal is input into the arc conveying path. In this embodiment, the longitudinal seal is performed first. In the arc conveying path, there is negative pressure to hold and circumferentially convey the continuous bag body, avoiding the circumferential movement of the longitudinal seal of the longitudinal seal component with the continuous bag body. The seal rod and its corresponding cam structure that move circumferentially along the arc conveying path can be omitted, which can reduce the cost of the seal rod structure. And due to the omission of the seal rod and cam structure, when the equipment stops, there will be no problem of the packaging material being deformed or melted due to the residual heat of the seal rod.

[0094] As an example, as Figure 6 shown, the arc conveying path is set to horizontally extend in a substantially arc shape when viewed from above. The arc conveying path is approximately between a half circle and three-quarters of a circle.

[0095] As an example, as Figure 5As shown, the arc conveying path is set as an arc conveying path that horizontally extends in a manner of being approximately semi-circular in top view. This arc conveying path is approximately a 1 / 2 arc.

[0096] Similarly, according to the packaging requirements of the filling and packaging machine and the requirements for the packaging speed, the arc conveying path can be set into an arc shape between 1 / 4 arc and 1 / 2 arc. It can be adaptively adjusted according to the actual production conditions of the filling and packaging machine, and no special limitation is made in this application.

[0097] Embodiment 2

[0098] As another preferred embodiment of the present invention, this embodiment elaborates on the specific implementation manner of step S3 in the above-mentioned Embodiment 1. In this embodiment, the packaging materials on both sides of the bag part in the continuously supplied bag bodies are respectively adsorbed by negative pressure. Specifically, a bag-sucking turntable mechanism 1 is arranged inside the arc conveying path 101, and the arc conveying path 101 is a part of the arc segment on the bag-sucking turntable mechanism 1; the continuously conveyed bag bodies 116 are held by the bag-sucking turntable mechanism 1 and are conveyed circumferentially as the bag-sucking turntable mechanism 1 rotates; a follow-up adsorption mechanism 2 is arranged outside the arc conveying path 101, and the follow-up adsorption mechanism 2 rotates relative to the bag-sucking turntable mechanism 1, and the linear velocities of the rotations are the same; the continuously supplied bag bodies 116 pass through between the follow-up adsorption mechanism 2 and the bag-sucking turntable mechanism 1, the follow-up adsorption mechanism 2 adsorbs the packaging material outside the bag part, the bag-sucking turntable mechanism 1 adsorbs the packaging material inside the bag part, and as the two rotate, the packaging materials on both sides of the bag part 108 are separated, and the bag opening 115 of the bag part is opened.

[0099] As an implementation manner of this embodiment, as Figure 7 shown, the bag-sucking turntable mechanism 1 includes a bag-sucking turntable 3 and a bag-sucking driving component for driving the bag-sucking turntable 3 to rotate. The bag-sucking turntable 3 includes a turntable body 6, and a plurality of bag-sucking areas 7 are uniformly arranged on the circumferential surface of the turntable body 6. Adsorption holes 8 for adsorbing the packaging material on one side of the bag body are arranged in the bag-sucking areas 7. The follow-up adsorption mechanism 2 includes an adsorption column 4 and an opening bag driving component 5 for driving the adsorption column 4 to rotate; a plurality of opening bag areas 9 that cooperate with the bag-sucking areas 7 on the bag-sucking turntable 3 are arranged on the circumferential surface of the adsorption column 4, and a plurality of opening bag negative pressure holes 10 are opened in the opening bag areas 9, and the opening bag areas 9 are arranged opposite to the bag-sucking areas 7 on the bag-sucking turntable 3.

[0100] As an example, as Figure 6 and Figure 8As shown, in this embodiment, the turntable body 6 is a solid disk structure. The middle of the turntable body 6 is connected to a rotating shaft, which is driven by a suction bag driving assembly. At this time, the suction bag driving assembly can be a combination of a servo motor and a reducer. A negative pressure air path 24 communicating with the suction holes 8 in the suction bag area 7 is arranged inside the turntable body 6. The negative pressure air path 24 is connected to a negative pressure rotary joint and then connected to a negative pressure source through a pipeline structure. The suction bag area 7 is a concave arc surface opened on the circumferential surface of the turntable body 6. This arc surface is used to accommodate the arc-shaped packaging material on one side of the bag part after the bag part of the packaging material is opened, which is beneficial to maintaining the opening of the bag mouth.

[0101] As another example, as Figure 5 and Figure 7 shown, in this embodiment, the turntable body 6 is a hollow disk structure. The suction bag area 7 can be a concave arc surface opened on the circumferential side of the turntable body 6. Each suction bag area 7 accommodates one bag part, and each bag part of the continuous bag body is sequentially adsorbed in the suction bag area 7. After the bag opening area 9 on the adsorption column 4 corresponds to the suction bag area 7, the bag mouth of the bag part is opened.

[0102] Embodiment 3

[0103] As another preferred embodiment of the present invention, this embodiment is a further supplementary elaboration on the implementation structure of the method for filling materials into continuous packaging materials as shown in Figure 7 on the basis of the above-mentioned Embodiment 2.

[0104] As Figure 7 shown, in this embodiment, the suction bag driving assembly is a hollow rotary table 11. As Figure 12 shown, the hollow rotary table 11 includes a rotating part and a fixed part 14. The fixed part 14 is fixed on the machine frame, and the rotating part rotates relative to the fixed part 14. The lower end of the suction bag turntable 3 is assembled on the rotating part 12 of the hollow rotary table 11 and rotates with the rotating part 12 of the hollow rotary table 11. Using the hollow rotary table 11 as the driving mechanism of the adsorption turntable ensures the stability of the operation of the adsorption turntable. At the same time, it also saves more assembly space for other components. The lifting shaft and lifting cam for driving the filling rod to lift can be assembled inside the hollow rotary table 11, making the overall structure more compact.

[0105] In Embodiment 2 Figure 10Compared with the implementation structure shown, the turntable body 6 of the adsorption turntable in this embodiment is a hollow disc structure, and an air distribution disc 13 is provided on the hollow rotating platform 11. The air distribution disc 13 is fixedly assembled on the fixing part 14 of the hollow rotating platform 11. A negative pressure chamber 15 is provided inside the air distribution disc 13, and a communication groove 16 communicating with the adsorption holes 8 in the suction bag area 7 is opened on the surface of the air distribution disc 13. By means of the air distribution disc 13, negative pressure suction is provided for the suction bag area 7 on the adsorption turntable, ensuring the stability of the negative pressure suction. Compared with the implementation structure shown in the above-mentioned Embodiment 2 Figure 6 it saves the middle space and also avoids the situation of partial failure of the suction bag area 7 caused by the blockage of the negative pressure air path 24 inside the structure.

[0106] In this embodiment, the communication groove 16 is opened on the air distribution disc 13 and communicates with the adsorption holes 8 in the suction bag area 7 only on the circumferential section at a set angle of the adsorption turntable. When it communicates with the communication groove 16, it adsorbs, and when it does not communicate, it does not adsorb, avoiding the repeated switching of negative pressure and providing more stable negative pressure.

[0107] As a more preferred implementation mode of this embodiment, referring to the attached drawings of the specification Figure 13 shown, the air distribution disc 13 includes an air distribution disc base 17 and an air distribution disc cover 18. The air distribution disc base 17 is fixedly assembled on the fixed part of the hollow rotating platform 11, and the air distribution disc cover 18 is hermetically assembled on the air distribution disc base 17. The communication groove 16 is provided on the air distribution disc cover 18. Since relative rotation occurs between the air distribution disc 13 and the adsorption turntable, in order to avoid the wear of the air distribution disc 13, the air distribution disc 13 is divided into two parts, the air distribution disc base 17 and the air distribution disc cover 18. When wear occurs, only the air distribution disc cover 18 needs to be replaced, rather than the whole being replaced, reducing the maintenance cost.

[0108] The air distribution disc cover 18 is made of tin-copper alloy material. A number of holes are drilled on the top surface of the air distribution disc cover 18, and graphite is poured into the holes. Making the air distribution disc cover 18 with tin-copper alloy material is more wear-resistant and extends the service life of the air distribution disc cover 18. Moreover, graphite is poured on the air distribution disc cover 18 to reduce the friction between the adsorption turntable and the air distribution disc cover 18, reduce the wear of the air distribution disc cover 18, and further improve its service life.

[0109] A further preferred solution is that the holes are blind holes. Using the blind hole structure to pour graphite can avoid the graphite falling off from the through holes after being worn for a period of time. With the blind hole structure, the graphite will not fall off from the holes.

[0110] Embodiment 3

[0111] As another preferred embodiment of the present invention, this embodiment is a supplementary elaboration on the specific implementation structure of the turntable body 6 in the above-mentioned Embodiment 2. As Figure 10As shown in the figure, the bottom of the turntable body 6 is used to dock and connect with the rotating part 12 of the hollow rotating platform 11, and its connection structure can adopt the form of a connecting flange structure for assembly connection; a plurality of bag suction modules 19 are arranged on the circumferential side of the turntable body 6, and a plurality of assembly holes for assembling the bag suction modules 19 are arranged on the circumferential side of the turntable body 6. The bag suction module 19 is used to replace the bag suction area 7 on the shaft side of the turntable body 6. The bag suction module 19 correspondingly forms the bag suction area 7 on the circumferential surface of the turntable body 6. Through the setting of the bag suction module 19, each bag suction area 7 is made independent of each other. If a bag suction module 19 fails, it can be replaced separately, and the maintenance cost is relatively low.

[0112] Further, in step S4, the stuffing rod is inserted into the bag part with the opened bag mouth, and the stuffing rod moves synchronously with the conveying trajectory of the bag part in the arc conveying path. Specifically,

[0113] The stuffing rod is driven by the lifting shaft to move up and down to insert into and pull out from the bag part with the opened bag mouth; a shaft hole 25 for assembling the lifting shaft is arranged on the turntable body 6. The number of lifting shafts is the same as the number of stuffing rods, and the number of stuffing rods is the same as the number of bag suction areas 7 on the turntable body 6, and they correspond one by one; the lifting shafts are evenly distributed along the axial direction of the axis of the turntable body 6 and move circumferentially as the turntable body 6 rotates. The power of the turntable body 6 can be used to drive the stuffing rod to do circular motion. By assembling a lifting cam inside the hollow rotating platform 11, the lifting control of the stuffing rod can be realized. From the power aspect, the same power source can be shared with the turntable body 6, and the equipment cost is lower.

[0114] Embodiment 4

[0115] As another preferred embodiment of the present invention, this embodiment is a supplementary elaboration on the specific implementation structure of the bag suction module 19 in the above-mentioned embodiment 3. As Figure 14 shown, the bag suction module 19 includes a module body 20. The module body 20 is a hollow structure. The outer side surface of the module body 20 is an inner concave surface 21. The adsorption holes 8 are arranged on the inner concave surface 21, and the adsorption holes 8 are communicated with the internal hollow cavity of the module body 20. A communication hole 22 for docking with the communication groove 16 on the air distribution disc 13 is arranged at the bottom of the module body 20, and the adsorption holes 8 are communicated with the communication hole 22. The communication hole 22 cooperates with the air distribution disc 13 on the hollow rotating platform 11 to supply negative pressure to the adsorption holes 8.

[0116] Embodiment 5

[0117] As another preferred embodiment of the present invention, this embodiment is an elaboration on the specific implementation structure of the follow-up adsorption mechanism 2 in the above-mentioned embodiment 2. As Figure 15As shown, the follower adsorption mechanism 2 further includes an adsorption column mounting base 23. The adsorption column 4 and the bag opening drive assembly 5 are both assembled on the adsorption column mounting base 23. A gas distribution plate 13 is provided between the lower end face of the adsorption column 4 and the top surface of the adsorption column mounting base 23. As Figure 13 shown, the structure of the gas distribution plate 13 can refer to the structure of the gas distribution plate 13 shown in Embodiment 2.

[0118] In this embodiment, as an example, the bag opening drive assembly 5 of the follower adsorption mechanism 2 can be a gear set. Through the transmission of the gear set and reasonably controlling the transmission ratio of the gear set, the follower adsorption mechanism 2 and the adsorption turntable mechanism adopt the same power source and have the same linear velocity.

[0119] As another example, the bag opening drive assembly 5 is a combined structure of a servo motor and a reducer, which is connected to the adsorption column 4 through a coupling to drive the adsorption column 4 to rotate.

[0120] Embodiment 6

[0121] As another preferred embodiment of the present invention, this embodiment elaborates on the specific implementation manner of longitudinally sealing the folded packaging material on the basis of Embodiment 1.

[0122] As an implementation manner of this embodiment, referring to the attached Figure 5 shown, in step S2, longitudinally sealing the packaging material specifically means that a pair of rotatable longitudinal sealing rollers 26 are provided on both sides of the packaging material supply path. A plurality of longitudinal sealing knife seats 27 are evenly assembled in the circumferential direction of the longitudinal sealing rollers 26. The folded packaging material passes through between the pair of rotatable longitudinal sealing rollers 26, and the longitudinal sealing rollers 26 on both sides perform longitudinal sealing on the folded packaging material at a given interval.

[0123] As another implementation manner of this embodiment, referring to the attached Figure 6 shown, in step S2, longitudinally sealing the packaging material specifically means that a translation assembly 28 that reciprocates along its conveying direction is provided below the folded packaging material. A plurality of groups of longitudinal sealing knife groups arranged side by side along the conveying direction of the folded packaging material are provided on the translation assembly 28. Each group of longitudinal sealing knife groups includes two relatively moving longitudinal sealing knife seats 27, and a given interval is provided between adjacent longitudinal sealing knife groups; the folded packaging material passes through between the two relatively moving longitudinal sealing knife seats 27, and the plurality of groups of longitudinal sealing knife groups move synchronously to perform longitudinal sealing on the folded packaging material at a given interval.

[0124] The above are only embodiments of the present invention, and common general knowledge of specific structures and / or characteristics in the solution is not described in detail herein. It should be noted that for those skilled in the art, without departing from the method of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A method for filling materials into a continuous packaging material, characterized in that, The method comprises the following steps: S1. The strip packaging material (103) is continuously supplied in a state of being folded in half with the crease (104) facing downward; for the conveying path (100) of the continuously supplied packaging material, an arc conveying path (101) horizontally extending in an arc shape when viewed from above, a packaging material supply path connected to the starting point of the arc conveying path (101), and an extended conveying path (102) connected to the ending point of the arc conveying path (101) are provided; S2. Before the folded packaging material (103) enters the arc conveying path (101), longitudinal sealing is performed on the packaging material at a given interval along the conveying direction of the folded packaging material, and a bag portion (108) opening upward is formed between adjacent longitudinal seals (107); the bag portions (108) are continuously formed, and the packaging material becomes a continuously supplied bag body (116); S3. The continuously supplied bag body (116) continues to be conveyed into the arc conveying path. Inside the arc conveying path (101), the packaging materials on both sides of the bag portion (108) in the continuously supplied bag body (116) are respectively adsorbed by negative pressure. Under the action of the negative pressure adsorption on both sides, the bag opening (115) of the bag portion (108) is opened; when the continuously supplied bag body (116) is conveyed along the circumferential direction of the arc conveying path (101), the bag openings (115) of the bag portions (108) in the continuously supplied bag body (116) are sequentially opened; the continuously supplied bag body (116) is held by negative pressure along the arc conveying path (101) and conveyed along the circumferential direction of the arc conveying path (101) at the same time; The packaging materials on both sides of the bag portion in the continuously supplied bag body (116) are respectively adsorbed by negative pressure. Specifically, a bag suction rotary table mechanism (1) is arranged inside the arc conveying path (101), and the arc conveying path (101) is a partial arc segment on the bag suction rotary table mechanism (1); the continuously conveyed bag body (116) is held by the bag suction rotary table mechanism (1) and conveyed circumferentially as the bag suction rotary table mechanism (1) rotates; a follower adsorption mechanism (2) is arranged outside the arc conveying path (101), the follower adsorption mechanism (2) rotates relative to the bag suction rotary table mechanism (1), and the linear velocities of the rotations are the same; the continuously supplied bag body (116) passes between the follower adsorption mechanism (2) and the bag suction rotary table mechanism (1), the follower adsorption mechanism (2) adsorbs the packaging material outside the bag portion, the bag suction rotary table mechanism (1) adsorbs the packaging material inside the bag portion, and as the two rotate, the packaging materials on both sides of the bag portion (108) are separated, and the bag opening (115) of the bag portion (108) is opened; S4. A stuffing rod (109) is inserted into the bag portion (108) with the opened bag opening (115), and the stuffing rod (109) moves synchronously with the conveying trajectory of the bag portion (108) in the arc conveying path; in the arc conveying path (101), materials are filled into the bag portion (108) with the opened bag opening through the stuffing rod (109); after the material filling is completed, the stuffing rod (109) is pulled out of the bag portion before the bag portion (108) enters the extended conveying path (102).

2. The method for filling materials into a continuous packaging material according to claim 1, characterized in that: The arc conveying path (101) is a horizontally extending arc conveying path that forms a half circle in a top view.

3. The method for filling materials into a continuous packaging material according to claim 1, characterized in that: The bag sucking turntable mechanism (1) includes a bag sucking turntable (3) and a bag sucking driving assembly for driving the rotation of the bag sucking turntable (3). The bag sucking turntable (3) includes a turntable body (6). A plurality of bag sucking areas (7) are evenly arranged on the circumferential surface of the turntable body (6). Adsorption holes (8) for adsorbing the packaging material on one side of the bag part (108) are provided in the bag sucking areas (7).

4. The method for filling materials into a continuous packaging material according to claim 1, characterized in that: The follow-up adsorption mechanism (2) includes an adsorption column (4) and a bag opening driving assembly (5) for driving the rotation of the adsorption column (4); a plurality of bag opening areas (9) that cooperate with the bag sucking areas (7) on the bag sucking turntable (3) are provided on the circumferential surface of the adsorption column (4). A plurality of bag opening negative pressure holes (10) are provided in the bag opening areas (9). The bag opening areas (9) are arranged opposite to the bag sucking areas (7) on the bag sucking turntable (3).

5. The method for filling materials into a continuous packaging material according to claim 3, characterized in that: In step S4, the stuffing rod (109) is inserted into the bag part (108) with the opened bag mouth (115), and the stuffing rod (109) moves synchronously with the conveying trajectory of the bag part (108) in the arc conveying path (101). Specifically, The stuffing rod (109) is driven by a lifting shaft (110) to move up and down to be inserted into and pulled out from the bag part (108) with the opened bag mouth (115); a shaft hole (25) for assembling the lifting shaft (110) is provided on the turntable body (6). The number of lifting shafts (110) is the same as the number of stuffing rods (109), and the number of stuffing rods (109) is the same as the number of bag sucking areas (7) on the turntable body (6), and they correspond one by one; the lifting shafts (110) are evenly distributed along the axial direction of the axis of the turntable body (6) and move circumferentially as the turntable body (6) rotates.

6. The method for filling materials into a continuous packaging material according to claim 3, characterized in that: The bag sucking driving assembly is a hollow rotary table (11). The lower end of the bag sucking turntable (3) is assembled on the rotating part (12) of the hollow rotary table (11) and rotates with the rotating part (12) of the hollow rotary table (11).

7. The method for filling materials into a continuous packaging material according to claim 6, characterized in that: An air distribution disk (13) is provided on the hollow rotary table (11). The air distribution disk (13) is fixedly assembled on the fixed part (14) of the hollow rotary table (11). A negative pressure chamber (15) is provided inside the air distribution disk (13). Communication grooves (16) communicating with the adsorption holes (8) in the bag sucking areas (7) are provided on the surface of the air distribution disk (13).

8. The method for filling materials into a continuous packaging material according to claim 7, characterized in that: The air distribution disk (13) includes an air distribution disk base (17) and an air distribution disk cover (18). The air distribution disk base (17) is fixedly assembled on the fixed part (14) of the hollow rotary table (11). The air distribution disk cover (18) is hermetically assembled on the air distribution disk base (17). The communication grooves (16) are provided on the air distribution disk cover (18).

9. The method for filling materials into a continuous packaging material according to claim 8, characterized in that: The air distribution disk cover (18) is made of a tin-copper alloy material. A plurality of holes are drilled on the top surface of the air distribution disk cover (18), and graphite is poured into the holes; the holes are blind holes.

10. The method for filling materials into a continuous packaging material according to claim 7, characterized in that: A plurality of bag sucking modules (19) are evenly arranged on the circumferential surface of the turntable body (6). The bag sucking modules (19) correspondingly form the bag sucking areas (7) on the circumferential surface of the turntable body (6).

11. The method for filling materials into a continuous packaging material according to claim 10, characterized in that: The suction bag module (19) includes a module body (20). The outer side surface of the module body (20) is a concave surface (21), and the suction holes (8) are arranged on the concave surface (21). A communication hole (22) for docking with the communication groove (16) on the air distribution disc (13) is arranged at the bottom of the module body (20), and the suction holes (8) communicate with the communication hole (22).

12. The method for filling materials into a continuous packaging material according to claim 4, characterized in that: The follow-up suction mechanism (2) further includes a suction column mounting seat (23). The suction column (4) and the bag opening drive assembly (5) are both assembled on the suction column mounting seat (23), and an air distribution disc (13) is arranged between the lower end surface of the suction column (4) and the top surface of the suction column mounting seat (23).

13. The method for filling materials into a continuous packaging material according to claim 1 or 2, characterized in that: In step S2, the longitudinal sealing of the packaging material specifically means that a pair of rotatable longitudinal sealing rollers (26) are arranged on both sides of the packaging material supply path. A plurality of longitudinal sealing knife seats (27) are evenly assembled in the circumferential direction of the longitudinal sealing rollers (26). The folded packaging material (103) passes between the pair of rotatable longitudinal sealing rollers (26), and the longitudinal sealing rollers (26) on both sides perform longitudinal sealing on the folded packaging material (103) at a given interval.

14. The method for filling materials into a continuous packaging material according to claim 1 or 2, characterized in that:In step S2, the longitudinal sealing of the packaging material (103) specifically means that a translation assembly (28) that reciprocates along its conveying direction is arranged below the folded packaging material (103). A plurality of groups of longitudinal sealing knife groups arranged side by side along the conveying direction of the folded packaging material (103) are arranged on the translation assembly (28). Each group of longitudinal sealing knife groups includes two relatively moving longitudinal sealing knife seats (27), and a given interval is provided between adjacent longitudinal sealing knife groups; the folded packaging material passes between the two relatively moving longitudinal sealing knife seats (27), and the plurality of groups of longitudinal sealing knife groups move synchronously to perform longitudinal sealing on the folded packaging material at a given interval.

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