Four-side sealed three-dimensional bag packaging machine

Abstract

The present invention discloses a four-side sealed three-dimensional bag packaging machine. An automatic film supply module, a punching device and a three-sealing module conveyor are arranged below the quantitative conveyor line to cooperate to realize the shaping and sealing of three three-dimensional sides of the three-dimensional bag. Through the above actions, the coated film is introduced into the rear-end bagging conveyor line through the film guide frame. At the same time, the rear-end bagging conveyor line is docked with the quantitative conveyor line, and the quantitatively bagged food is introduced into the film material and then the last side of the film material is sealed. After the above actions, the four-side sealed three-dimensional bag moves towards the port sealing module on the rear-end bagging conveyor line in a cylindrical unsealed state, and then the hot melt sealing of both ends of the four-side sealed three-dimensional bag is realized through the port sealing module. The structure of this device is designed compactly, and it realizes the synchronous progress of the forming of the four-side sealed three-dimensional bag and food packaging. Compared with the prior art, it improves the working efficiency and packaging quality, and is an ideal four-side sealed three-dimensional bag packaging machine.

Description

Technical Field

[0001] The invention belongs to the technical field of pasta forming, and in particular relates to a four-side sealed three-dimensional bag packaging machine. Background Art

[0002] In the field of food packaging technology, for example, when bagged bread of the French bread type is packaged, it is necessary to use a Figure 1 The bag with four-side sealed three-dimensional structure is currently packaged in a way that the packaging bag is prefabricated in advance and has a single end opening, and a certain amount of bread is put in and the end is sealed to achieve the packaging of the entire bagged food.

[0003] However, the disadvantage of this operation is that the bagging process is basically done manually, which is inefficient and the bagging quality is uneven.

[0004] To address this drawback, as a technician in this industry, it is very necessary to design a four-side sealed three-dimensional bag packaging machine, which can be connected to the existing bread production line and directly deliver the produced bread into the packaging bag in a quantitative manner. Realizing automatic bag sealing and packaging is a technical problem that needs to be urgently solved by technicians in this field. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a four-side sealed three-dimensional bag packaging machine, which is connected to the production line to directly transport the bread on the production line to the bagging equipment, and realizes the bag sealing operation while performing quantitative packaging.

[0006] To achieve the above technical objectives, the present invention adopts the following scheme: a four-side sealed three-dimensional bag packaging machine, which includes a quantitative conveying line, in which a dividing device is arranged to evenly divide the conveyed object, and an interval pushing is achieved through a baffle device; at the bottom of the quantitative conveying line, an automatic film supply module is arranged on the side facing the conveying line, and the rear side of the automatic film supply module is a punching device, which realizes the punching of the film material and then conveys it to the three-sealing module, and the three-side sealing of the three-dimensional bag is achieved through the three-sealing module, and then the film is introduced to the rear bagging conveying line through the film material guide, and the conveyed object is bagged at the same time, and a single-side sealing module is arranged on the side of the rear bagging conveying line, which realizes the hot melt sealing of the last side of the four-side closure, and moves to the port sealing module of the rear section after the sealing is completed, and the sealing of the ports at both ends of the four-side sealed three-dimensional bag is achieved through the port sealing module, and finally it is transported to the outside through the external extension conveyor belt.

[0007] On the described quantitative conveyor line, there are corresponding front and rear conveyor chains and a middle conveyor belt. Between the two conveyor chains, multiple separating connecting rods are evenly fixed. At the outlet of the quantitative conveyor line, there is an interval pushing module. The interval pushing module includes a pushing frame. At the rear side of the pushing frame, there is a driving device and a driving gear. The driving shaft on the driving gear extends to the front side of the pushing frame. On the pushing frame, there are at least two driving sprockets. Between the two driving sprockets, it is driven by an endless chain. On the endless chain, extension rods are evenly arranged. The front end of each extension rod is hinged with a swing rod through a rotating shaft. At the bottom of the swing rod, there is a pushing plate. The pushing plate realizes the quantitative pushing of the conveyed object under the drive of the endless chain.

[0008] The described punching device includes a punching fixed frame. At the left and right ends of the punching fixed frame, there are extrusion roller groups. At least one of the two extrusion roller groups is connected to a driving device for driving. The extrusion roller group includes two rollers arranged up and down. Near each extrusion roller group, there is a rotating shaft respectively. On each rotating shaft, there is a driving wheel. Between the two driving wheels, there is an endless connecting device. Through the endless connecting device, endless driving is realized. The endless connecting device is fixed on the punching moving frame. On the punching moving frame, there is a vertically driving knife to realize punching when moving along with the film material.

[0009] On the punching moving frame, there is a film material through groove, and the film material passes through the film material through groove.

[0010] The described three-sealing module includes a three-sealing fixed frame. Inside the three-sealing fixed frame, there is a sealing edge shaping frame. At the rear side of the sealing edge shaping frame, there is a sealing edge conveying module. At the rear side of the sealing edge conveying module is a hot melt sealing module. At the rear side of the hot melt sealing module is an end conveying module. Through the sealing edge shaping frame, indentation forming of the sealing edge part is realized. Then, through the sealing edge conveying module, the laminated extrusion conveying of the indentation part is carried out. At the hot melt sealing module, clamping is realized for hot melt combination. After combination, it is conveyed to the outside through the end conveying module.

[0011] The described sealing edge shaping frame includes a gantry frame body. On the gantry frame body, there is a driving handwheel. At the lower part of the driving handwheel, there are three forming upper dies. On the bottom surface of each forming upper die, there is a forming protrusion. The starting end of the forming protrusion is set as a smooth arc surface, and its end is set as a sharp angle. Directly below each forming upper die, there is a forming lower die. On each forming lower die, there is a forming cavity. The forming cavity is matched with the forming protrusion. At the outlet end of the forming cavity, there is a forming gap. When the film material passes between the two, the film material realizes the stacking of the film material at the sealing edge through the forming gap.

[0012] There are two edge-sealing conveying drive devices oppositely arranged on the edge-sealing conveying module. Each edge-sealing conveying drive device drives a fixing plate, and three conveying wheels are arranged on each fixing plate. After the conveying wheels are driven by the drive device to move relatively, three groups of edge-sealing conveying wheel groups are formed, and the stacked film material is advanced by squeezing through the edge-sealing conveying wheel groups.

[0013] There are two hot-melt extrusion drive devices oppositely arranged on the hot-melt edge-sealing module. Each hot-melt extrusion drive device drives a hot-melt bottom plate, and three hot-melt contact heads are arranged on each hot-melt bottom plate. After the hot-melt bottom plates are driven by the hot-melt extrusion drive device to move relatively, three groups of hot-melt contact head groups are formed to perform hot-melt edge-sealing on the stacked film material.

[0014] There are two end-conveying drive devices oppositely arranged on the end-conveying module. Each end-conveying drive device drives a conveying fixing frame, and at least one conveying fixing frame is provided with three vertical drive motors to drive the conveying wheels to rotate. When the two conveying fixing frames move relatively, three drive wheel groups are formed to realize the extrusion and traction conveying of the hot-melted edge-sealing part.

[0015] There are multiple groups of indentation roller groups arranged inside the edge-sealing shaping frame. Each group of indentation roller groups includes two indentation rollers. A rotary indentation punch and a rotary indentation die are respectively arranged on the two cooperating indentation rollers and are matched with each other. When the film material with three-sided edge-sealing passes through, indentation extrusion molding is realized.

[0016] The single-side sealing module includes a top hot-melt unit. The top hot-melt unit includes a hot-melt fixing frame and a hot-melt lifting frame; a vertical lifting drive device is arranged between the hot-melt fixing frame and the hot-melt lifting frame, and it drives the hot-melt lifting frame to move away from or close to the hot-melt fixing frame through the vertical lifting drive device; the structures of the hot-melt fixing frame and the hot-melt lifting frame on the side facing the rear-end bagging conveying line are the same, and both are provided with two drive wheels. A conveyor belt is wound around between the drive wheels. A hot-melt module is arranged at the top of the hot-melt fixing frame and at the bottom of the hot-melt lifting frame. After the two are combined, the conveyor belt extrusion conveying and hot-melting are synchronized.

[0017] A vertical slide rail is arranged between the hot-melt fixing frame and the hot-melt lifting frame to restrict their vertical movement.

[0018] A single-side extrusion wheel group is arranged at the discharge port end of the hot-melt fixing frame and the hot-melt lifting frame to realize the extrusion drive after single-side edge-sealing.

[0019] A unilateral driving device is provided on the top hot-melt unit. The unilateral driving device drives the unilateral driving gear to rotate, and at the same time drives the lower transition gear to mesh with the lower driving wheel on the hot-melt fixing frame to achieve driving. An oscillating plate is provided on the upper part of the unilateral driving gear and is fixed to the hot-melt lifting frame. An upper transition gear is provided on the oscillating plate, and driving is achieved by driving the upper driving wheel to mesh through the upper transition gear. The upper driving wheel is fixed on the oscillating plate. The oscillating plate swings around the unilateral driving gear, which is used to keep the wheel spacing between the upper driving wheel and the unilateral driving gear unchanged when the hot-melt lifting frame is lifted.

[0020] A bottom driving bin is provided at the lower part of the top hot-melt unit. The bottom driving bin includes a set of meshing gears. A vertical driving rod is provided on one of the gears, and the vertical lifting of the hot-melt unit is achieved under the meshing drive of the meshing gears.

[0021] The port sealing module includes a port sealing fixing frame. The port sealing fixing frame is arranged in a frame structure, and fixing plates are provided at both the front and rear ends. The fixing plates arranged front and rear and the fittings on the fixing plates are the same and symmetrically arranged front and rear. Two eccentric wheels are provided on the front fixing plate, and a driving gear is provided on each eccentric wheel. Two oscillating beams are commonly fixed on the four symmetrically arranged front and rear eccentric shafts. The upper oscillating beam and the lower oscillating beam swing synchronously. Hot-melt devices are provided on both the upper oscillating beam and the lower oscillating beam, and hot-melt combination can be achieved when the two are combined. A swinging groove is provided on the upper driving gear, and a swinging rod is arranged in a matching manner with the swinging groove. The middle of the swinging rod is hinged, and a swinging shaft is connected to its bottom. The end of the swinging shaft is connected to the propulsion base. A positioning fork is provided on the propulsion base. The two swinging rods arranged front and rear act synchronously, and they synchronously push the positioning fork to move relatively to achieve the positioning and shaping of the bottom of the three-dimensional bag when the hot-melt devices are combined.

[0022] A return spring is provided on the swinging shaft. When the two positioning forks move towards each other, the return spring is compressed. When the two positioning forks move relatively, the compression of the return spring causes the two positioning forks to reset.

[0023] The beneficial effects of the present invention are as follows: Through the above structural settings, an automatic film feeding module, a punching device, and a three-sealing module are arranged under the quantitative conveying line to cooperate with each other to shape and seal the three three-dimensional sides of the three-dimensional bag. Through the above operations, the film is then guided by the film guide frame to the rear bagging conveying line. At the same time, the rear bagging conveying line is docked with the quantitative conveying line, and the quantitative bagged food is introduced into the film to realize the sealing of the last side of the film. After the above operations, the four-side sealed three-dimensional bag moves towards the port sealing module on the rear bagging conveying line in a cylindrical unsealed state, and then the hot melt sealing of both ends of the four-side sealed three-dimensional bag is realized through the port sealing module. The structure of this device is designed compactly, realizing the simultaneous shaping of the four-side sealed three-dimensional bag and food packaging. Compared with the prior art, it improves the working efficiency and packaging quality, and is an ideal four-side sealed three-dimensional bag packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the four-side sealed three-dimensional bag to be formed by the present invention;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 3 It is a top-view structural schematic diagram of the present invention;

[0027] Figure 4 It is a front-view structural schematic diagram of the present invention;

[0028] Figure 5 It is a front-view structural schematic diagram of the automatic film feeding module;

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the quantitative conveying line:

[0030] Figure 7 For Figure 6 The structural schematic diagram of area A in

[0031] Figure 8 It is a structural schematic diagram of the baffle device drive;

[0032] Figure 9 It is a three-dimensional structural schematic diagram of the punching device;

[0033] Figure 10 It is a top-view structural schematic diagram of the punching device;

[0034] Figure 11 It is a three-dimensional structural schematic of the three-sealing module Figure Ⅰ ;

[0035] Figure 12 It is a three-dimensional structural schematic of the three-sealing module Figure Ⅱ ;

[0036] Figure 13 Schematic diagram of the internal principle structure of the three-seal module:

[0037] Figure 14 Schematic diagram of the internal top view structure of the three-seal module:

[0038] Figure 15 Schematic diagram of the top view principle structure of the three-seal module:

[0039] Figure 16 Schematic diagram of the three-dimensional structure of the forming lower die;

[0040] Figure 17 Schematic diagram of the three-dimensional structure of the forming upper die;

[0041] Figure 18 Schematic diagram of the three-dimensional structure of the top hot-melt unit Figure Ⅰ ;

[0042] Figure 19 Schematic diagram of the side view structure of the top hot-melt unit Figure Ⅰ ;

[0043] Figure 20 Schematic diagram of the side view structure of the top hot-melt unit Figure Ⅱ ;

[0044] Figure 21 Schematic diagram of the three-dimensional structure of the port sealing module Figure Ⅰ ;

[0045] Figure 22 Schematic diagram of the front view structure of the port sealing module;

[0046] Figure 23 Schematic diagram of the three-dimensional structure of the port sealing module Figure Ⅱ ;

[0047] In the attached drawings, 1 is a quantitative conveying line, 11 is a conveying chain, 12 is a middle conveyor belt, 13 is a separating connecting rod, 14 is an interval pushing module, 140 is a pushing frame, 141 is an interval pushing drive motor, 142 is a quantitative conveying drive motor, 143 is a tensioning wheel, 144 is a driving gear, 145 is a transition gear, 146 is a driving sprocket, 147 is an extension rod, 148 is a swing rod, 149 is a pushing plate, 15 is a four-side sealed three-dimensional bag, 16 is a port sealing edge, 17 is a sealing edge, 18 is an indentation, 19 is a rear-end bagging conveying line, 20 is a ventilation hole, 2 is an automatic film supply module, 3 is a punching device, 30 is a punching fixing frame, 31 is a squeezing roller group, 32 is a squeezing roller drive motor, 33 is a punching moving frame, 331 is a film material through groove, 332 is a vertically driven cutter, 34 is a rotating shaft, 341 is a rotating shaft driving gear, 35 is a driving wheel, 4 is a three-sealing module, 40 is a three-sealing fixing frame, 41 is a sealing edge shaping frame, 411 is a gantry body, 412 is a forming upper die, 413 is a driving handwheel, 414 is a forming protrusion, 415 is a forming lower die, 416 is a forming cavity, 42 is a sealing edge conveying module, 420 is a fixing plate, 421 is a sealing edge conveying drive cylinder, 422 is a conveying wheel, 43 is a hot melt sealing edge module, 430 is a hot melt bottom plate, 431 is a hot melt extrusion drive cylinder, 432 is a hot melt contact, 44 is a terminal conveying module, 440 is a conveying fixing frame, 441 is a terminal conveying drive cylinder, 442 is a vertical driving motor, 443 is a hot melt driving wheel, 444 is a hot melt driven wheel, 45 is an upper indentation roller, 451 is a rotary indentation punch, 46 is a lower indentation roller, 461 is a rotary indentation die, 47 is a three-sealing drive motor, 48 is an extension wheel set;5. Drafting wheel set, 6. External extension conveyor belt, 7. Film material guide frame, 8. Unilateral sealing module, 80. Hot melt fixing frame, 81. Unilateral driving motor, 810. Unilateral driving gear, 811. Unilateral transition driving wheel, 812. Axle center driving gear, 82. Axle center fixing plate, 821. Vertical chute, 822. Vertical slide rail, 823. Lifting driving cylinder, 824. Lifting swing plate, 825. Linking plate, 826. Lower driving wheel, 827. Lower transition gear, 83. Swing plate, 831. Upper transition gear I, 832. Upper transition gear II, 833. Upper driving wheel, 84. Hot melt lifting frame, 841. Lifting driving wheel, 842. Upper hot melt module, 843. Upper conveyor belt, 85. Hot melt fixing frame, 851. Fixing driving wheel, 852. Lower hot melt module, 853. Lower conveyor belt, 86. Bottom driving bin, 861. Horizontal driving wheel, 862. Hot melt fixing frame driving handwheel, 863. Vertical lifting driven wheel, 864. Vertical driving rod, 9. Port sealing module, 90. Fixing plate, 91. Port sealing upper driving gear, 92. Port sealing lower driving gear, 93. Port sealing main driving gear, 94. Port sealing transition wheel, 95. Swing groove, 96. Upper swing beam, 961. Hot melt end, 97. Eccentric wheel, 98. Lower swing beam, 99. Swing shaping frame, 991. Swing rod, 992. Swing shaft, 993. Propelling base, 994. Positioning fork, 995. Return spring.; Detailed implementation mode

[0048] A four-side sealed three-dimensional bag packaging machine aims to realize the forming of a four-side sealed three-dimensional packaging bag as Figure 1 shown, and place the contents inside while the four-side sealed three-dimensional packaging bag is being formed. In this embodiment, the example of bagged bread is used for explanation.

[0049] This four-side sealed three-dimensional bag packaging machine includes a quantitative conveying line 1. A dividing device is arranged inside the quantitative conveying line 1 to evenly divide the conveyed objects, and an interval pushing is achieved through a baffle device. The purpose is to quantitatively convey bagged materials backward; at the bottom of the quantitative conveying line 1, an automatic film feeding module 2 is respectively arranged on the side facing the conveyed direction of the conveying line. Automatic feeding to the rear side is achieved through the automatic film feeding module 2. This film feeding structure is an existing technology and will not be elaborated here; behind the automatic film feeding module 2 is a punching device 3. Processing of the ventilation holes 20 is achieved through the punching device 3. After the film material is punched, it is conveyed to the three-sealing module 4. Three of the four sealing edges 17 on the four-side sealed three-dimensional bag 15 are heat-sealed through the three-sealing module. Then, the coated film is introduced into the rear-end bagging conveying line 19 through the film guiding rack 7, and at the same time, the conveyed objects are bagged. A single-side sealing module 8 is arranged on the side of the rear-end bagging conveying line 19, which heat-seals the last one of the four sealing edges 17. After the sealing is completed, it moves to the port sealing module 9 at the rear section. The port sealing module 9 seals the port sealing edges 16 at both ends of the four-side sealed three-dimensional bag. Finally, it is conveyed to the outside through the external extended conveyor belt 6 to complete the packaging.

[0050] Since this production line is relatively large, the following will explain through specific modules and specific functions with examples.

[0051] Quantitative conveying: The purpose of setting the quantitative conveying line 1 is to convey a fixed quantity of bagged bread to the subsequent process. It is provided with front and rear corresponding conveying chains 11 and a middle conveyor belt 12. A plurality of partition connecting rods 13 are evenly fixed between the two conveying chains 11. A quantitative conveying driving motor 142 is arranged on the side of the quantitative conveying line 1 to synchronously drive the conveying chains 11 and the middle conveyor belt 12;

[0052] An interval pushing module 14 is arranged at the outlet of the quantitative conveying line 1. The interval pushing module 14 includes a pushing frame 140. A interval pushing driving motor 141 and a driving gear 144 are arranged at the rear of the pushing frame 140. The driving gear 144 realizes the annular connection of the chain or belt through the cooperation with the transition gear 145 and the tensioning wheel 143. Through this structural setting, the driving shaft on the driving gear 144 extends to the front side of the pushing frame 140. At least two driving sprockets 146 are arranged on the front side of the pushing frame 140. The two driving sprockets 146 are driven by an annular chain. Extension rods 147 are evenly arranged on the annular chain. The front end of each extension rod 147 is hinged with a swing rod 148 through a rotating shaft. A pushing plate 149 is arranged at the bottom of the swing rod 148. The pushing plate 149 quantitatively pushes the bread under the drive of the annular chain. The above-mentioned quantitative conveying directly conveys the bread to the rear-end bagging conveying line 19.

[0053] Punching operation: The purpose of the punching operation is to form the ventilation holes 20 as shown in Figure 1 to prevent the internal and external pressure difference after the formation of the four-side sealed three-dimensional bag 15.

[0054] The punching device includes a punching fixing frame 30. At both the left and right ends of the punching fixing frame 30, there are extrusion roller groups 31. At least one of the two groups of extrusion roller groups 31 is connected to an extrusion roller drive motor for driving. The extrusion roller group 31 includes two rollers arranged vertically. A rotating shaft 34 is respectively arranged near each extrusion roller group. A driving wheel 35 is arranged on each rotating shaft 34. An annular belt is arranged between the two driving wheels 35 to achieve annular driving through the annular belt. The annular belt is fixed on the punching moving frame 33. A vertical driving knife 332 is arranged on the punching moving frame 33 to perform punching when moving along with the film material. A film material through slot 331 is arranged on the punching moving frame 33, and the film material passes through the film material through slot 331. The vertical driving knife 332 is driven by an external air cylinder. When it moves vertically, it penetrates the film material through slot 331 to perform punching operations on the film material passing through the inside of the film material through slot 331, preparing for the heat melting sealing of three of the subsequent four edges 17.

[0055] Performing heat melting sealing actions on three of the four edges 17:

[0056] The above functions are realized by using a three-sealing module. The three-sealing module 4 includes a three-sealing fixed frame 40. Inside the three-sealing fixed frame 40, there is an edge sealing shaping frame 41. At the rear side of the edge sealing shaping frame 41, there is an edge sealing conveying module 42. At the rear side of the edge sealing conveying module 42 is a heat melting edge sealing module 43. At the rear side of the heat melting edge sealing module 43 is an end conveying module 44. Through the edge sealing shaping frame 41, the indentation formation of the edge sealing part is realized. Then, through the edge sealing conveying module 42, the laminated extrusion conveying of the indentation part is carried out, and heat melting combination is realized under the clamping of the heat melting edge sealing module 43. After combination, it is conveyed to the outside through the end conveying module 44.

[0057] The above-mentioned edge sealing conveying module 42, heat melting edge sealing module 43, and the rear side end conveying module 44 all have clamping and relaxing functions. Through this kind of structural setting, when the film material conveying has a short-term intermittent pause, the continuous clamping and heating of the heat melting edge sealing module 43 to the film material is prevented from causing local damage to the film material.

[0058] The edge sealing shaping frame 41 includes a gantry body 411. A driving handwheel 413 is arranged on the gantry body 411 and is connected to three forming upper dies 412 arranged at its lower part. The up and down adjustment driving of the forming upper die 412 is realized through the driving handwheel 413.

[0059] On the bottom surface of each upper forming die 412, a forming protrusion 414 is provided. The starting end of the forming protrusion 414 is provided with a smooth arc surface, and its end is provided with a sharp angle. A lower forming die 415 is arranged directly below each upper forming die 412 to match it. A forming cavity 416 is arranged on each lower forming die 415. When the upper forming die 412 and the lower forming die 415 are combined, the forming cavity 416 is arranged to be inserted and matched with the forming protrusion 414. A forming gap is arranged at the outlet end of the forming cavity. When the film material passes between the two, the film material realizes the superposition of the film material at the edge sealing position 17 through the forming gap, preparing for the subsequent edge sealing action.

[0060] As Figure 13 、 14 shown, two edge sealing conveying driving cylinders 421 are arranged oppositely on the edge sealing conveying module 42. Each edge sealing conveying driving cylinder 421 drives a fixing plate 420. Three conveying wheels 422 are arranged on each fixing plate 420. After the upper conveying wheels 422 are driven by the edge sealing conveying driving cylinder 421 to move relatively, three groups of edge sealing conveying wheel sets are formed. Two conveying wheels 422 are clamped and used as a group. The superposed film material coming out between the upper forming die 412 and the lower forming die 415 is vertically pressed and conveyed through the edge sealing conveying wheel sets, and fed to the hot melt edge sealing module 43.

[0061] Two hot melt extrusion driving cylinders 431 are arranged oppositely on the hot melt edge sealing module 43. Each hot melt extrusion driving cylinder 431 drives a hot melt bottom plate 430. Three hot melt contact heads 432 are arranged on each hot melt bottom plate 430. After the hot melt bottom plates are driven by the hot melt extrusion driving cylinder 431 to move relatively, three groups of hot melt contact head sets are formed, so as to realize the hot melt edge sealing of the superposed film material.

[0062] Two end conveying driving cylinders 441 are arranged oppositely on the end conveying module 44. Each end conveying driving cylinder 441 drives a conveying fixing frame 440. Three vertical driving motors 442 are arranged on one of the conveying fixing frames 440 and drive the hot melt driving wheel 443 to rotate. When the two conveying fixing frames 440 move relatively, three driving wheel sets are formed to realize the extrusion and traction conveying of the hot melt driving wheel 443 on the hot melt driven wheel 444 for the hot melted edge sealing part.

[0063] The edge sealing conveying module 42, the hot melt edge sealing module 43 and the end conveying module 44 are all relatively driven by the relatively installed driving cylinders, so as to realize the clamping and relaxation of the conveying wheels or the hot melt device. This driving structure can be realized by various structures in the mechanical industry and is completely implementable for those skilled in the art. The structural details thereof will not be elaborated herein.

[0064] The edge banding shaping frame 41 is internally provided with a plurality of groups of creasing rollers, each group of creasing rollers comprising an upper creasing roller 45 and a lower creasing roller 46, the upper creasing roller being provided with a rotary creasing punch 451, the lower creasing roller 46 being provided with a rotary creasing die 461, through this structural setting, all the creasing rollers are driven under the drive of the three-sealing drive motor 47.

[0065] Furthermore, the inlet and outlet ends of the three-sealing module 4 are both provided with stretching wheel sets 48, the purpose of which is to achieve flattening of the film material entering the three-sealing module 4 and the film material exiting the three-sealing module 4 to prevent the generation of wrinkles.

[0066] Single-side sealing module (performs hot-melt sealing on the last of the four sealing edges 17):

[0067] The single-sided sealing module 8 is arranged on the upper part of the rear-end bagging conveyor line 19, and the rear-end bagging conveyor line 19 is connected to the quantitative conveyor line to realize the quantitative acceptance of the bread on the quantitative conveyor line and realize sealing while accepting; this module performs hot-melt sealing on the last of the four edge sealings 17.

[0068] It includes a top hot melt unit 8, and the top hot melt unit 8 includes a hot melt fixing frame 80 and a hot melt lifting frame 84; a lifting drive cylinder 823 is arranged between the hot melt fixing frame 80 and the hot melt lifting frame 84, which is connected to the lifting swing plate 824 through the driving end of the lifting drive cylinder 823, and the lifting swing plate is hinged and fixed in the middle, one end of which is connected to the lifting drive cylinder 823, and the other end is connected to the hot melt lifting frame 84 to realize vertical drive; in order to ensure the stability of the vertical movement between the hot melt fixing frame 80 and the hot melt lifting frame 84, a vertical slide groove 821 and a vertical slide rail 822 are arranged between the hot melt fixing frame 80 and the hot melt lifting frame 84, and the vertical movement is realized by mutual constraint between the two, and the hot melt lifting frame 84 is driven to separate from or approach the hot melt fixing frame 80.

[0069] The hot melt fixing frame 80 and the hot melt lifting frame 84 have the same structure on the side facing the rear end bagging conveyor line 19. Two lifting drive wheels 841 are arranged on the hot melt lifting frame 84. An upper conveyor belt 843 is arranged around the two lifting drive wheels 841. The center of the upper conveyor belt 843 is an upper hot melt module 842. The same structural arrangement is arranged. Two fixed driving wheels 851 are arranged on the hot melt fixing frame 80. A lower conveyor belt 853 is arranged between the two fixed driving wheels 851. The center of the lower conveyor belt 853 is a lower hot melt module 852. Through the above structural arrangement, when the hot melt fixing frame 80 and the hot melt lifting frame 84 are combined, the upper conveyor belt 843 and the lower conveyor belt 853 contact and extrude the edge banding 17 to be hot-melted to move. When entering the clamping area of ​​the upper hot melt module 842 and the lower hot melt module 852, clamping hot melting is achieved, thereby achieving sealing.

[0070] At one end of the discharge ports of the hot melt fixing frame 80 and the hot melt lifting frame 84, a single-sided extrusion wheel set 86 is arranged up and down to realize the extrusion drive after single-sided edge sealing.

[0071] During the actual operation of this device, when the hot melt fixing frame 80 and the hot melt lifting frame 84 are separated, it is still in the driving state. Therefore, a device that can realize driving both when they are combined and after separation must be designed. The following structure can be realized by this technical solution:

[0072] A single-sided driving motor 81 is arranged on the hot melt fixing frame 80 in a supporting manner. The single-sided driving motor 81 drives the single-sided driving gear 811 to rotate through the single-sided driving gear 810 at the driving end. The single-sided driving gear 811 drives the central driving gear 812 to rotate. An axial center fixing plate 82 is arranged on the central driving gear 812. One end of the axial center fixing plate 82 is connected with a swing plate 83. On the swing plate 83, an upper transition gear I 831, an upper transition gear II 832 and an upper driving wheel 833 which are meshed with each other are fixed. Through this structural arrangement, the swing plate 83 swings around the single-sided driving gear to keep the wheel spacing between the upper driving wheel 833 and the single-sided driving gear 810 unchanged when the hot melt lifting frame 84 is lifted, so as to realize stable driving.

[0073] The central driving gear 812 also drives the lower transition gear 827 to mesh with the lower driving wheel 826 on the hot melt fixing frame to realize the driving of the fixed driving wheel, and the overall driving of the entire top hot melt unit 8 can be realized through a single driving source.

[0074] Furthermore, during the actual use of this device, due to the different heights of the sealing edges 17 on the four-side sealed three-dimensional bag 15, when the entire top hot melt unit 80 is actually fixed, its relative height with the rear bagging conveying line 19 needs to be adjusted. Therefore, in this technical solution, a bottom driving bin 86 is arranged below the top hot melt unit 80. Inside the bottom driving bin 86, there is a set of meshing gears composed of a horizontal driving wheel 861 and a vertical lifting driven wheel 863. Driven by the hot melt fixing frame driving hand wheel 862, the vertical lifting driven wheel 863 drives the vertical driving rod 864 to move vertically, so as to realize the vertical lifting of the entire top hot melt unit 80 driven by the vertical driving rod 864.

[0075] Sealing of the port after packaging:

[0076] This process section realizes the hot melt combination of the port sealing edge 16 on the four-side sealed three-dimensional bag 15, and simultaneously realizes the shaping of the peripheral position of the port sealing edge 16 during the combination, so as to make the corners of the packaged four-side sealed three-dimensional bag 15 flat.

[0077] The described port sealing module 9 includes a port sealing fixing frame, which is arranged in a frame structure. Fixing plates 90 are provided at both the front and rear ends thereof. The fixing plates 90 arranged front and rear and the fittings on the fixing plates are the same and symmetrically arranged front and rear. Two eccentric wheels 97 are provided on the front fixing plate 90, one port sealing upper driving gear 91 is provided on the upper eccentric wheel 97, and one port sealing lower driving gear 92 is provided on the lower eccentric wheel 97. Two swing beams are jointly fixed on the four symmetrically arranged front and rear eccentric shafts. The upper swing beam 96 located at the upper part and the lower swing beam 98 located at the lower part swing synchronously. Heat melting ends 961 are provided on both the upper swing beam 96 and the lower swing beam 98. When the two are combined, heat melting combination can be realized.

[0078] Swing grooves 95 are provided on the two port sealing upper driving gears 91 arranged front and rear. A swing rod 991 is arranged in a matching manner with the swing grooves 95. The middle of the swing rod 991 is hinged, and a swing shaft 992 is connected to its bottom. The end of the swing shaft 992 is connected to a propulsion base 993. A positioning fork 994 is provided on the propulsion base 993. The two swing rods 991 arranged front and rear act synchronously, and they synchronously push the positioning fork 994 to move relatively to realize the positioning and shaping of the bottom ends of both sides of the three-dimensional bag during the combination of the heat melting device.

[0079] Further, a return spring 995 is provided on the swing shaft 992. When the two positioning forks move towards each other, the return spring 995 is compressed. When the two positioning forks move relatively, the compression of the return spring 995 causes the two positioning forks to move outwards to realize reset.

[0080] Summary: In the present invention, an automatic film feeding module 2, a punching device 3 and a three-sealing module 4 are arranged under the quantitative conveying line and cooperate with each other to realize the shaping and sealing of the three three-dimensional sides of the three-dimensional bag. Through the above actions, the film is then introduced into the rear-end bagging conveying line 19 through the film guiding frame 5. At the same time, the rear-end bagging conveying line 19 is docked with the quantitative conveying line 1, and the quantitative bagged food is introduced into the film material and then the sealing of the last side of the film material is realized. After the above actions, the four-side sealed three-dimensional bag moves towards the port sealing module 9 on the rear-end bagging conveying line 19 in a cylindrical unsealed state, and then the heat melting sealing of both ends of the four-side sealed three-dimensional bag is realized through the port sealing module 9. The structure of this device is designed compactly, and it realizes the simultaneous shaping of the four-side sealed three-dimensional bag and food packaging. Compared with the prior art, it improves the working efficiency and packaging quality, and is an ideal four-side sealed three-dimensional bag packaging machine.

Claims

1. A four-side sealed three-dimensional bag packaging machine, which includes a metering conveyor line, Characterized in that: A dividing device is arranged in the metering conveyor line to evenly divide the conveyed objects, and an interval pushing is realized through a baffle device; at the bottom of the metering conveyor line, an automatic film feeding module is respectively arranged on the side facing the conveying direction of the conveyor line. The rear side of the automatic film feeding module is a punching device, which punches the film material and then conveys it to the three-side sealing module. The three-side sealing module seals three sides of the three-dimensional bag. Then, the film with coating is introduced into the rear-end bagging conveyor line through a film guide frame, and at the same time, the conveyed objects are bagged. A single-side sealing module is arranged on the side of the rear-end bagging conveyor line, which realizes the heat fusion sealing of the last side for four-side closure. After the sealing is completed, it moves to the port sealing module at the rear section, and the port sealing module seals the two ends of the four-side sealed three-dimensional bag. Finally, it is conveyed to the outside through an external extended conveyor belt; a front and rear corresponding conveying chain and a middle conveyor belt are arranged on the metering conveyor line. A plurality of separating connecting rods are evenly fixed between the two conveying chains. An interval pushing module is arranged at the outlet of the metering conveyor line. The interval pushing module includes a pushing frame. A driving device and a driving gear are arranged at the rear side of the pushing frame. The driving shaft on the driving gear extends to the front side of the pushing frame. At least two driving sprockets are arranged on the pushing frame. The two driving sprockets are driven by an endless chain. The endless chain is evenly provided with extension rods. The front end of each extension rod is hinged with a swing rod through a rotating shaft. A pushing plate is arranged at the bottom of the swing rod. The pushing plate realizes the metering pushing of the conveyed objects under the drive of the endless chain; the punching device includes a punching fixed frame. Extrusion roller groups are arranged at the left and right ends of the punching fixed frame. At least one of the two groups of extrusion roller groups is connected to a driving device to realize driving. The extrusion roller group includes two rollers arranged up and down; a rotating shaft is respectively arranged near each extrusion roller group. A driving wheel is arranged on each rotating shaft. An annular connecting device is arranged between the two driving wheels. The annular driving is realized through the annular connecting device. The annular connecting device is fixed on a punching moving frame. A vertical driving knife is arranged on the punching moving frame to punch holes when moving along with the film material.

2. The four-side sealed three-dimensional bag packaging machine according to claim 1, Characterized in that: The three-side sealing module includes a three-side sealing fixed frame. A sealing edge shaping frame is arranged inside the three-side sealing fixed frame. A sealing edge conveying module is arranged at the rear side of the sealing edge shaping frame. The rear side of the sealing edge conveying module is a hot melt sealing edge module. The rear side of the hot melt sealing edge module is an end conveying module. The sealing edge shaping frame realizes the indentation forming of the sealing edge part. Then, the laminated extrusion conveying of the indentation part is carried out through the sealing edge conveying module. The hot melt combination is realized by clamping in the hot melt sealing edge module. After the combination, it is conveyed to the outside through the end conveying module.

3. The four-side sealed three-dimensional bag packaging machine according to claim 2, Characterized in that: The described edge-sealing and shaping frame includes a gantry body, on which a driving handwheel is provided. Three shaping upper dies are arranged below the driving handwheel. On the bottom surface of each shaping upper die, a shaping protrusion is provided. The starting end of the shaping protrusion is arranged as a smooth arc surface, and its ending end is arranged as a sharp angle. A shaping lower die is arranged directly below each shaping upper die. A shaping cavity is provided on each shaping lower die. The shaping cavity is arranged to match the shaping protrusion. A shaping gap is provided at the outlet end of the shaping cavity. When the film material passes between the two, the film material realizes the stacking of the film material at the edge-sealing part through the shaping gap.

4. The four-side sealed three-dimensional bag packaging machine according to claim 2, characterized in that: Two edge-sealing conveying driving devices are oppositely arranged on the edge-sealing conveying module. Each edge-sealing conveying driving device drives a fixed plate. Three conveying wheels are arranged on each fixed plate. After the conveying wheels are driven to move relatively by the driving device, three groups of edge-sealing conveying wheel groups are formed, and the stacked film material is extruded and advanced through the edge-sealing conveying wheel groups. Two hot-melt extrusion driving devices are oppositely arranged on the hot-melt edge-sealing module. Each hot-melt extrusion driving device drives a hot-melt bottom plate. Three hot-melt contact heads are arranged on each hot-melt bottom plate. After the hot-melt bottom plates are driven to move relatively by the hot-melt extrusion driving device, three groups of hot-melt contact head groups are formed to perform hot-melt edge-sealing on the stacked film material. Two end-conveying driving devices are oppositely arranged on the end-conveying module. Each end-conveying driving device drives a conveying fixed frame. At least one conveying fixed frame is provided with three vertical driving motors to drive the conveying wheels to rotate. When the two conveying fixed frames move relatively, three driving wheel groups are formed to realize the extrusion traction conveying of the hot-melted edge-sealing part.

5. The four-side sealed three-dimensional bag packaging machine according to claim 1, characterized in that: The single-side sealing module includes a top hot-melt unit. The top hot-melt unit includes a hot-melt fixed frame and a hot-melt lifting frame. A vertical lifting driving device is arranged between the hot-melt fixed frame and the hot-melt lifting frame, and the hot-melt lifting frame is driven to move away from or close to the hot-melt fixed frame through the vertical lifting driving device. The structures of the hot-melt fixed frame and the hot-melt lifting frame on the side facing the rear bagging conveying line are the same, and both are provided with two driving wheels. A conveyor belt is wound around between the driving wheels. A hot-melt module is arranged at the top of the hot-melt fixed frame and at the bottom of the hot-melt lifting frame. After the two are combined, the conveyor belt extrusion conveying and hot-melting are synchronized.

6. The four-side sealed three-dimensional bag packaging machine according to claim 5, characterized in that: A unilateral driving device is provided for the top hot-melt unit. The unilateral driving device drives the unilateral driving gear to rotate, and at the same time drives the lower transition gear to mesh with the lower driving wheel on the hot-melt fixing frame to achieve driving. An oscillating plate is arranged above the unilateral driving gear and fixed to the hot-melt lifting frame. An upper transition gear is arranged on the oscillating plate, and driving is achieved by driving the upper driving wheel to mesh through the upper transition gear. The upper driving wheel is fixed to the oscillating plate. The oscillating plate swings around the unilateral driving gear, and it is used to keep the wheel spacing between the upper driving wheel and the unilateral driving gear unchanged when the hot-melt lifting frame is lifted.

7. The four-side sealed three-dimensional bag packaging machine according to claim 6, characterized in that: A bottom driving bin is arranged below the top hot-melt unit. The bottom driving bin includes a set of meshing gears. A vertical driving rod is arranged on one of the gears, and the vertical lifting of the hot-melt unit is achieved under the meshing drive of the meshing gears.

8. The four-side sealed three-dimensional bag packaging machine according to claim 1, characterized in that: The port sealing module includes a port sealing fixing frame. The port sealing fixing frame is arranged in a frame structure, and fixing plates are arranged at both the front and rear ends. The fixing plates arranged front and rear and the fittings on the fixing plates are the same and symmetrically arranged front and rear. Two eccentric wheels are arranged on the front fixing plate, and a driving gear is arranged on each eccentric wheel. Two swing beams are commonly fixed on the four symmetrically arranged eccentric shafts. The upper swing beam and the lower swing beam swing synchronously. Hot-melt devices are arranged on both the upper swing beam and the lower swing beam, and hot-melt combination is achieved when the two are combined; an oscillating groove is provided, and an oscillating rod is arranged to match the oscillating groove. The middle of the oscillating rod is hinged, and a swing shaft is connected to its bottom. The end of the swing shaft is connected to a propulsion base. A positioning fork is arranged on the propulsion base. The two oscillating rods arranged front and rear act synchronously, and they synchronously push the positioning fork to move relatively to achieve positioning and shaping of the bottom of the three-dimensional bag when the hot-melt devices are combined.

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