FFS heavy film bag-making type packaging machine

Abstract

The invention relates to an FFS heavy film bag-making type packaging machine which comprises a film unwinding assembly used for unwinding a packaging film and a film frame assembly used for receiving the packaging film of the film unwinding assembly and driving the packaging film to be conveyed and further comprises a lower sealing mechanism, a swing arm assembly, a discharging assembly and an upper sealing assembly. According to the packaging machine, through mutual cooperation of a film placing assembly, a film frame assembly, a swing arm assembly, a discharging assembly and other mechanisms, the bag making, packaging and sealing processes of a heavy film packaging bag are completed, a double-layer material door is arranged in the discharging assembly, one layer of material door serves as a direct valve to close a discharging bin, the other layer of material door is further arranged below the material door, and therefore the discharging bin is closed. When the packaging machine is opened, the packaging machine can enter a bag opening of the packaging bag through the end portion, then the bag opening of the packaging bag is completely opened along with the increase of the opening degree, material scattering is prevented, and the overall structural size of the packaging machine is simplified.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging machines, and in particular relates to an FFS heavy film bag making packaging machine. Background Art

[0002] FFS packaging machine is an integrated packaging device used for bag making (FORM), filling (FILL) and sealing (SEAL). Existing FFS packaging machines generally include the following components: packaging film placing assembly, packaging film driving assembly, packaging film cutting and sealing assembly, progressive conveying assembly, feeding assembly and sealing assembly.

[0003] Since the heavy film packaging bag has two layers of film, the inner and outer layers are prone to misalignment during transportation, and after being cut into sections, they need to be progressively transported. Therefore, the bag making and packaging process of the heavy film packaging bag requires a large number of guiding, clamping, conveying, and driving mechanisms, so its structure is complicated, and the existing unloading components lack a reliable bag opening structure due to space limitations, which makes the material easy to scatter during the unloading process and even affects the normal operation of other mechanisms. Summary of the invention

[0004] The purpose of the present invention is to provide a FFS heavy film bag making packaging machine in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] An FFS heavy film bag making packaging machine comprises a film unwinding assembly for unwinding a packaging film, a film frame assembly for receiving the packaging film of the film unwinding assembly and driving the packaging film for conveying, and further comprises

[0007] A lower sealing mechanism, which is used to seal and cut the packaging film delivered by the film rack assembly to form a single-opening packaging bag;

[0008] A swing arm assembly, which is used to progressively convey the single-opening packaging bags cut out by the lower sealing mechanism;

[0009] A feeding assembly, which is used to inject material into a single-opening packaging bag, comprises a shell assembly, wherein the shell assembly comprises a feeding bin, and the bottom opening of the feeding bin is provided with a double-layered material door, wherein one layer of the material door is used to open and close the bottom opening of the feeding bin, and the other layer is used to prop open the packaging bag when opening;

[0010] The upper sealing mechanism is used to seal the packaging bag after filling.

[0011] As a further optimization scheme of the present invention, the film frame assembly includes a frame plate, and a first film pulling assembly and a second film pulling assembly are arranged in the frame plate, wherein the first film pulling assembly includes a first active roller, and the second film pulling assembly includes a second active roller, and the first active roller and the second active roller are each driven by a servo motor arranged on the frame plate, and the second active roller and the output shaft end of the corresponding servo motor are connected in an open and close manner through a clutch device arranged on the frame plate.

[0012] As a further optimization scheme of the present invention, the first film pulling assembly also includes a guide roller and an auxiliary correcting roller, wherein a first correcting sleeve is provided on the surface of the first active roller, and a second correcting sleeve is provided on the surface of the auxiliary correcting roller, and the clutch device is provided on the shaft of the second active roller, and a transmission pulley is provided on the shaft of the servo motor, which is connected to the clutch device through a belt.

[0013] As a further optimization scheme of the present invention, a corner sealing assembly is also provided on the frame plate, and the corner sealing assembly is located between the first film pulling assembly and the second film pulling assembly. The corner sealing assembly includes a fixed plate and a heat sealing assembly arranged on the fixed plate. The heat sealing assembly includes a guide rail and a pair of heat sealing units slidably arranged on the guide rail. The two heat sealing units are driven by the same driving mechanism arranged on the fixed plate to move towards each other to heat seal the tubular film.

[0014] As a further optimization scheme of the present invention, the driving mechanism includes a swing arm, which is driven by a telescopic driving member arranged on the fixed plate, so that the swing arm rotates along a hinge axis arranged between the swing arm and the fixed plate, wherein a pair of first connecting rods respectively hinged to the two heat sealing units are arranged on the surface of the swing arm, and the hinge points of the first connecting rods and the swing arm are located symmetrically on both sides of the hinge axis, and the heat sealing unit includes a slider slidably arranged on a guide rail, and a corner sealing pressure plate is arranged on the surface of the slider, which is slidably connected to the slider through a guide structure, and a second spring is arranged on the guide structure, and a heat sealing block is arranged on the inner side of the corner sealing pressure plate, and a dividing plate is also arranged on the fixed plate, which is arranged between the two heat sealing units and is used to fold the tubular film into M edges.

[0015] As a further optimization scheme of the present invention, the swing arm assembly includes a side plate and a plurality of swing arm units, the swing arm unit includes a swing arm driving shaft and at least one swing arm driven shaft rotatably arranged on the side plate, swing arm rods are fixedly arranged at both ends of the swing arm driving shaft and the swing arm driven shaft, a swing arm connecting plate is hinged between adjacent swing arm rods at the same end, clamping claw units are arranged at both ends of the swing arm connecting plate, the swing arm driving shaft is driven to rotate reciprocatingly to drive the clamping claw unit to progressively transmit the packaging bag.

[0016] As a further optimization scheme of the present invention, the swing arm driving shaft is driven by a driving source arranged on the side plate, wherein a swing arm crankshaft is arranged at the output end of the driving source, a swing arm connecting rod is hinged on the swing arm crankshaft, a driving connecting arm hinged to the swing arm connecting rod is fixedly arranged on the swing arm driving shaft, the clamping unit includes a clamping mechanism, the clamping mechanism is an opening and closing type clamping jaw, which is driven to open and close by a driving unit, and an adjustment plate is also arranged between the clamping mechanism and the swing arm connecting plate for adjusting the spacing between each pair of clamping mechanisms, and at least one pair of clamping units has a translation mechanism, and the translation mechanism is used to automatically drive the adjustment plate.

[0017] As a further optimization scheme of the present invention, the material door for opening and closing the bottom opening of the lower material bin is a straight flap, and the material door for holding open the packaging bag when opening is an arc flap arranged below the straight flap, and the lower material bin includes an upper shell and a lower shell, wherein the lower shell is a double-layer structure, including an outer shell and an inner shell, the inner shell is connected to the upper shell, the outer shell is sleeved on the outside of the inner shell, and a gap is left between the outer shell and the inner shell, and an exhaust hole is also arranged on the surface of the outer shell.

[0018] As a further optimization scheme of the present invention, the unloading assembly also includes a clamping jaw assembly, which includes a frame arranged on the outer shell, a first driving member arranged on the frame, and a pair of clamping jaw bodies hinged on the frame, the clamping jaw bodies are driven to open and close by the first driving member, and the material door is rotatably connected to the outer shell through a material door shaft arranged on its surface, wherein the two material doors are driven to open and close by the same second driving member arranged on the outer shell.

[0019] As a further optimization scheme of the present invention, the blanking assembly also includes a suction cup assembly for opening the packaging bag, the suction cup assembly includes at least one pair of clamping tubes hingedly arranged on the outside of the shell assembly, the clamping tubes are hollow tubes, a vacuum joint is arranged on the surface of the clamping tubes, and a suction cup is arranged at the end away from the hinged end. The clamping tubes are arranged on both sides of the shell assembly and are driven to open and close by the same third driving member arranged on the shell assembly.

[0020] The beneficial effects of the present invention are:

[0021] The present invention completes the process of making, packaging and sealing heavy-film packaging bags by cooperating with each other through the film placing assembly, the film frame assembly, the swing arm assembly and the material discharge assembly. A double-layer material door is arranged in the material discharge assembly, wherein one layer of the material door serves as a direct valve to close the material discharge bin, and another layer of the material door is further arranged below the above-mentioned material door. When opened, the material door can enter the bag opening of the packaging bag through the end, and then the bag opening of the packaging bag is fully opened as the degree of opening increases, which is beneficial to prevent material from scattering and is beneficial to simplifying the overall structural volume of the packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a right axonometric view of the overall structure of the present invention;

[0023] Figure 2 It is the overall structural front view of the present invention;

[0024] Figure 3 It is a left axonometric view of the overall structure of the present invention;

[0025] Figure 4 is a three-dimensional schematic diagram of a membrane frame assembly of the present invention;

[0026] Figure 5 is a front view of the membrane frame assembly of the present invention;

[0027] Figure 6 is a top view of the membrane frame assembly of the present invention;

[0028] Figure 7 is a side view of a membrane frame assembly of the present invention;

[0029] Figure 8 is a rear view of the membrane frame assembly of the present invention;

[0030] Fig. 9 is an isometric view of a corner seal assembly of the present invention;

[0031] Fig.10 is a front view of the corner seal assembly of the present invention;

[0032] Fig.11 is a top view of the corner seal assembly of the present invention after removing the adjusting guide shaft and the adjusting lead screw;

[0033] Fig.12 is a side view of the corner seal assembly of the present invention after removing the adjusting guide shaft and the adjusting lead screw;

[0034] Fig.13 is a right isometric view of the swing arm assembly of the present invention;

[0035] Fig.14 is a left isometric view of the swing arm assembly of the present invention;

[0036] Fig.15 is a front view of the swing arm assembly of the present invention;

[0037] Fig.16 is a side view of the swing arm assembly of the present invention;

[0038] Fig.17 is a top view of the swing arm assembly of the present invention;

[0039] Fig.18 is an isometric view of the blanking assembly of the present invention;

[0040] Fig.19 is a front view of the blanking assembly of the present invention;

[0041] Fig. 20 is a side view of the blanking assembly of the present invention;

[0042] Fig.21 is a top view of the blanking assembly of the present invention;

[0043] Fig. 22 The blanking assembly of the present invention Fig.21 Middle AA view;

[0044] Fig.23 The blanking assembly of the present invention Fig.21 Middle BB view;

[0045] Fig.24 It is a schematic diagram of a material door of a material unloading assembly of the present invention;

[0046] In the figure: 1. Place the membrane assembly;

[0047] 2. Film frame assembly; 210. Frame plate; 220. Feed tensioning assembly; 221. Tensioning roller frame; 222. Tensioning roller; 223. Tensioning cylinder; 230. First film drawing assembly; 231. First active roller; 232. First deviation correction sleeve; 233. Guide roller; 234. Auxiliary deviation correction roller; 235. Second deviation correction sleeve; 240. Second film drawing assembly; 241. Second active roller; 242. Servo motor; 243. Clutch device; 244. Driving pulley; 250. Adjustment assembly; 251. Adjustment roller; 252. Screw assembly; 253. Synchronous adjustment shaft; 260. Film blowing assembly; 261. Air nozzle bracket; 262. Air distributor block; 263. Air nozzle;

[0048] 3. Corner sealing assembly; 310. Fixed plate; 311. Adjustment guide shaft; 312. Adjustment screw; 320. Heat sealing assembly; 321. Guide rail; 322. Slider; 323. First spring; 324. Leveling plate; 325. Second spring; 326. Corner sealing pressure plate; 327. Heat sealing block; 330. Driving mechanism; 331. Telescopic driving member; 332. Swing arm; 333. Articulated shaft; 334. First connecting rod; 340. Splitting plate;

[0049] 4. Swing arm assembly; 410. Side plate; 420. Swing arm unit; 421. Swing arm driving shaft; 422. Swing arm driven shaft; 423. Swing arm crankshaft; 424. Swing arm connecting rod; 425. Drive connecting arm; 426. Drive source; 427. Swing arm rod; 428. Swing arm connecting plate; 430. Clamp unit; 431. Clamp mechanism; 432. Translation mechanism; 433. Adjustment plate; 440. Photoelectric assembly;

[0050] 5. Feeding assembly; 510. Shell assembly; 511. Outer shell; 512. Upper shell; 513. Inner shell; 514. Exhaust hole; 515. Dust removal joint; 520. Clamping jaw assembly; 521. Frame; 522. First driving member; 523. Clamping jaw connecting block; 524. Second connecting rod; 525. Clamping jaw body; 530. Material door assembly; 531. Second driving member; 532. First driving arm; 533. Material door shaft; 534. First adjusting arm; 535. Straight flap; 536. Arc flap; 540. Suction cup assembly; 541. Third driving member; 542. Second driving arm; 543. Clamping tube driving shaft; 544. Second adjusting arm; 545. Bearing seat; 546. Clamping tube; 547. Suction cup; 548. Vacuum joint;

[0051] 6. Sealing mechanism;

[0052] 7. Cooling mechanism;

[0053] 8. Transmission mechanism;

[0054] 9. Lower sealing mechanism. DETAILED DESCRIPTION

[0055] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0056] Example 1

[0057] like Figure 1-3 As shown, an FFS heavy film bag making packaging machine includes a film placing assembly 1 for placing a packaging film, a film frame assembly 2 for receiving the packaging film of the film placing assembly 1 and driving the packaging film to be transported, and also includes

[0058] A lower sealing mechanism 9, which is used to seal and cut the packaging film delivered by the film frame assembly 2 to form a single-opening packaging bag;

[0059] A swing arm assembly 4, which is used to progressively convey the single-opening packaging bags cut out by the lower sealing mechanism 9;

[0060] A feeding assembly 5, which is used to inject material into a single-opening packaging bag, comprises a housing assembly 510, wherein the housing assembly 510 comprises a feeding bin, and a double-layered material door is provided at the bottom opening of the feeding bin, wherein one layer of the material door is used to open and close the bottom opening of the feeding bin, and the other layer is used to prop open the packaging bag when opening;

[0061] The upper sealing mechanism 6 is used to seal the packaging bag after filling.

[0062] like Figure 4-8 As shown, the film frame assembly 2 includes a frame plate 210, and a first film pulling assembly 230 and a second film pulling assembly 240 are arranged in the frame plate 210, wherein the first film pulling assembly 230 includes a first active roller 231, and the second film pulling assembly 240 includes a second active roller 241, and the first active roller 231 and the second active roller 241 are each driven by a servo motor 242 arranged on the frame plate 210, and the second active roller 241 and the output shaft end of the corresponding servo motor 242 are connected in an open and close manner through a clutch device 243 arranged on the frame plate 210.

[0063] By setting up the first film-pulling assembly 230 and the second film-pulling assembly 240 to run continuously, the packaging film has sufficient driving ability during the film supply process, and the second film-pulling assembly 240 is equipped with a clutch device. When bags are accumulated or over-stretched between the first film-pulling assembly 230 and the second film-pulling assembly 240, the power connection of the second film-pulling assembly 240 is disconnected to make it a free roller to eliminate the impact.

[0064] A feed tensioning assembly 220 is also provided on the frame plate 210, which includes a tensioning roller frame 221 hinged on the frame plate 210 and a tensioning roller 222 arranged on the tensioning roller frame 221, wherein the tensioning roller frame 221 is driven and adjusted by a tensioning cylinder 223. In this scheme, the tension of the incoming material is adjusted by providing the feed tensioning assembly 220, and the tensioning roller frame 221 is driven to rotate by the tensioning cylinder 223 so that the tensioning roller 222 is in different positions, thereby adjusting the tension.

[0065] In the film supply direction, the first active roller 231 is arranged at the rear end of the second active roller 241. In order to make the packaging film have friction between the first active roller 231, a film pressing roller is also required to cooperate with the first active roller 231 to press the packaging film. The same applies to the second active roller 241.

[0066] The first film-drawing assembly 230 also includes a guide roller 233 and an auxiliary correcting roller 234, wherein a first correcting sleeve 232 is provided on the surface of the first active roller 231, and a second correcting sleeve 235 is provided on the surface of the auxiliary correcting roller 234. After the first film-drawing assembly 230 is pulled, the packaging film is about to enter the next processing stage, i.e., sealing and cutting. Therefore, the first correcting sleeve 232 is provided on the first active roller 231 to prevent the packaging film from deflecting, and the guide roller 233 functions to change the direction of the packaging film.

[0067] The clutch device 243 is arranged on the shaft of the second active roller 241, and the shaft of the servo motor 242 is provided with a driving pulley 244, which is connected to the clutch device 243 through a belt. In this scheme, the second active roller 241 is intermittently disconnected from the drive by setting the clutch device 243. The second active roller 241 is driven together with the first active roller 231 during normal operation. When film accumulation or excessive stretching occurs, the connection of the second active roller 241 is disconnected to make it a free roller to eliminate film accumulation or excessive stretching of the packaging film by the second active roller 241. The clutch device 243 is a prior art and can adopt a pneumatic clutch, which mainly includes a friction component, a driving component, and a reset component.

[0068] The film frame assembly also includes at least two adjustment assemblies 250, and the adjustment assembly 250 includes a pair of screw assemblies 252 arranged on the frame plate 210, and a movable seat is arranged on each of the screw assemblies 252, and an adjustment roller 251 is arranged between the two movable seats, wherein the shafts of the two screw assemblies 252 are provided with turbines, and a synchronous adjustment shaft 253 with worms at both ends is rotatably arranged on the frame plate 210, which is used to drive the two turbines to rotate in one direction through the worm, and the adjusting roller 251 is arranged to facilitate changing the angle of the packaging film as needed, and changing the position of the adjusting roller 251 to adjust the contact area between the packaging film and other different rollers.

[0069] The frame plate 210 is also provided with a film blowing assembly 260, which includes an air nozzle bracket 261 arranged on the frame plate 210, an air distributor block 262 arranged on the air nozzle bracket 261, and an air nozzle 263 arranged on the air distributor block 262, for blowing away dust and impurities on the packaging film.

[0070] Specifically, the packaging film is unwound by the unwinding device, and then passes through the tensioning roller 222 to adjust the tension, enters the second active roller 241, and then passes through the intermediate rollers such as the adjusting roller 251 and the auxiliary correcting roller 234, and is pulled by the first active roller 231 and sent into the lower sealing mechanism 9.

[0071] like Figure 9-12 As shown, a corner sealing assembly 3 is also provided on the frame plate 210, and the corner sealing assembly 3 includes a fixed plate 310 and a heat sealing assembly 320 arranged on the fixed plate 310, and the heat sealing assembly 320 includes a guide rail 321 and a pair of heat sealing units slidably arranged on the guide rail 321, and the two heat sealing units are driven by the same driving mechanism 330 arranged on the fixed plate 310 to move towards each other to heat seal the tubular film, and a dividing plate 340 is also provided on the fixed plate 310, which is arranged between the two heat sealing units and is used to fold the tubular film into M edges.

[0072] The corner sealing assembly 3 drives the two heat sealing units by setting the same driving mechanism 330 so that the two heat sealing units move synchronously. When the heat sealing units clamp the M edge from both sides, the synchronous movement can keep the deformation on both sides of the M edge consistent, and the position of the corner seal is more symmetrical and has better consistency.

[0073] The driving mechanism 330 includes a swing arm 332, and the swing arm 332 is driven to rotate along a hinge shaft 333 provided between the swing arm 332 and the fixed plate 310, wherein a pair of first connecting rods 334 respectively hinged to the two heat sealing units are provided on the surface of the swing arm 332, and the hinge points of the first connecting rods 334 and the swing arm 332 are located at symmetrical positions on both sides of the hinge shaft 333. By providing the swing arm 332 to simultaneously drive the two heat sealing units to move, the two heat sealing units are synchronized, which is conducive to simultaneous clamping and improves the symmetry of the heat sealing position. Specifically, Figure 5 As shown, the hinge shaft 333 is fixed to the fixed plate 310. When the swing arm 332 is pushed to rotate along the hinge shaft 333, the hinge points on both sides of the hinge shaft 333 drive the two first connecting rods 33 to move synchronously, and the other end of the first connecting rod 33 drives the slider 322 to slide synchronously along the guide rail 321.

[0074] There are two fixed plates 310 and two heat sealing components 320 respectively, and the spacing between the two fixed plates 310 is adjustable. An adjusting screw 312 and at least one adjusting guide shaft 311 are arranged between the two fixed plates 310. The two fixed plates 310 are pushed by the adjusting screw 312 to slide in opposite directions along the adjusting guide shaft 311. The spacing between the fixed plates 310 can be adjusted to adapt to packaging bags of different widths. This solution specifically proposes a method for adjusting the spacing of the fixed plates 310, which is guided by the adjusting guide shaft 311 and then adjusted and driven by the adjusting screw 312. The threads on the surface of the adjusting screw 312 are in opposite directions, so that the fixed plates 310 are more symmetrical and synchronized when adjusting the spacing.

[0075] The swing arm 332 is pushed and pulled back by the telescopic driving member 331 arranged on the fixed plate 310. The telescopic driving member 331 adopts a cylinder. The output end of the cylinder can be set to an F shape. The output end and the swing arm 332 are only set in contact to push and pull the swing arm 332, or the output end of the cylinder and the swing arm 332 are movably hinged, and can slide axially while the hinge rotates.

[0076] The heat sealing unit includes a slider 322 slidably set on a guide rail 321, and a corner sealing pressure plate 326 is set on the surface of the slider 322. The corner sealing pressure plate 326 is slidably connected to the slider 322 through a guide structure, and a second spring 325 is set on the guide structure. A heat sealing block 327 is set on the inner side of the corner sealing pressure plate 326. This solution specifically proposes a heat sealing unit, which uses the second spring 325 as a buffer and is heated by the heat sealing block 327. An insulating pad can be set on the non-heating surface of the heat sealing block 327.

[0077] A leveling plate 324 is also provided between the corner sealing pressure plate 326 and the slider 322. The leveling plate 324 is slidably connected to the slider 322 through a guide rod, and a first spring 323 is provided on the guide rod. The leveling plate 324 is provided to facilitate leveling and adjusting the corner sealing pressure plate 326 according to actual conditions. The guide rod is a screw and nut structure that is pressed and fixed to the slider 322, and leveling and adjustment are performed by adjusting the screw and nut.

[0078] Specifically, the cylindrical packaging bag moves up from the bottom and enters between the two fixed plates 310, and is folded inward at the guided lower edge of the dividing plate 340 to form an M edge. The driving mechanism 330 drives the two heat sealing units to approach the dividing plate 340, and heat-seals and fixes the edges and corners of the inner and outer film of the packaging bag. After completion, the heat sealing units are separated, and the packaging bag continues to move up, wherein the corner sealing component 3 is arranged between the first film-stretching component 230 and the second film-stretching component 240. After passing through the second film-stretching component 240, the packaging film moves upward, and after being guided, enters the first film-stretching component 230, and is driven by the two film-stretching components.

[0079] like Figure 13-17 As shown, the swing arm assembly 4 includes a side plate 410 and a plurality of swing arm units 420. The swing arm unit 420 includes a swing arm driving shaft 421 rotatably arranged on the side plate 410 and at least one swing arm driven shaft 422. Both ends of the swing arm driving shaft 421 and the swing arm driven shaft 422 are fixedly provided with swing arm rods 427. A swing arm connecting plate 428 is hinged between adjacent swing arm rods 427 at the same end. Both ends of the swing arm connecting plate 428 are provided with clamping claw units 430. The swing arm driving shaft 421 is driven to rotate reciprocatingly so as to drive the clamping claw units 430 to progressively convey the packaging bags.

[0080] By setting a swing arm driving shaft 421 and a swing arm driven shaft 422, and constraining them through a connecting plate 28 so that the swing arm driving shaft 421 and the swing arm driven shaft 422 are parallelograms to each other, the swing arm driving shaft 421 and the clamping unit 430 on the same swing arm unit 420 can move at the same time, and the control of the swing path is simpler. In addition, only the swing arm driving shaft 421 needs to be driven, and fewer driving structures are required, which is conducive to space optimization.

[0081] In the present embodiment, there are two swing arm units 420, each of which has one swing arm driven shaft 422. Each swing arm unit 420 has two pairs of clamping jaw units 430, which can drive the two clamping jaw units 430 to operate simultaneously without interfering with each other, and there is no need to design a complicated control program. A loading structure can be set in the gap between the two swing arm units 420. The structure has four pairs of clamping jaw units 430, which can cooperate with the fixed structure in other structures to assist other devices in completing filling, sealing, cooling and other steps during the progressive transmission of the packaging bag.

[0082] The swing arm driving shaft 421 is driven by a driving source 426 arranged on the side plate 410, wherein a swing arm crankshaft 423 is arranged at the output end of the driving source 426, a swing arm connecting rod 424 is hinged on the swing arm crankshaft 423, and a driving connecting arm 425 hinged to the swing arm connecting rod 424 is fixedly arranged on the swing arm driving shaft 421. In this scheme, the swing arm crankshaft 423 is arranged, and further the swing arm connecting rod 424 and the driving connecting arm 425 are used to complete the reciprocating rotation of the swing arm driving shaft 421, which can be completed by continuous rotation of the driving source 426. The swing arm connecting rod 424 and the driving connecting arm 425 can be arranged at the end of the swing arm driving shaft 421. The structure occupies a small space and only needs to control the rotation period of the driving source 426. When the swing arm crankshaft 423 of the driving source 426 rotates one circle, the swing arm unit 420 swings one cycle.

[0083] The driving source 426 is a motor driven by a servo control system, which is fixed on a connecting rib extending from the side panel 410. A photoelectric component 440 for monitoring the swing arm crankshaft 423 is also provided on the connecting rib. By providing a servo motor and a photoelectric component 440, different swing arm units 420 can be conveniently controlled to cooperate with each other.

[0084] The clamp unit 430 includes a clamp mechanism 431 , which is an opening and closing type clamp that is driven to open and close by a driving unit. The opening and closing type clamp is a prior art, which opens and closes the clamp by driving the clamp component.

[0085] An adjustment plate 433 is further provided between the clamping mechanism 431 and the swing arm connecting plate 428 for adjusting the spacing between each pair of the clamping mechanisms 431 . The adjustment plate 433 needs to be provided with a fixing structure so as to fix the clamping mechanism 431 after adjustment.

[0086] At least one pair of clamping jaw units 430 has a translation mechanism 432, which is used to automatically drive the adjustment plate 433. The translation mechanism 432 automatically controls the adjustment plate 433, which helps to automatically adjust the distance between the two clamping jaw mechanisms 431 as needed during the clamping process.

[0087] Specifically, in the FFS packaging machine, such as Fig.13As shown, each pair of jaw units 430 are numbered from right to left as the first jaw, the second jaw, the third jaw, and the fourth jaw. After the packaging bag is made, it is taken down by the first jaw and then temporarily stored in an external transfer structure. After being taken down by the second jaw, it is docked and grasped by the third jaw, and then temporarily stored in the transfer structure. After being taken down by the fourth jaw, it is placed on the conveyor belt, wherein the above-mentioned transfer structure at least includes a blanking component 5, a sealing mechanism 6, and a cooling mechanism 7.

[0088] like Figure 18-24 As shown, in the material discharge component 5, the material door for opening and closing the bottom opening of the material discharge bin is a straight flap 535, and the material door for opening the packaging bag when opening is a circular arc flap 536 arranged below the straight flap 535. This solution arranges the straight flap 535 as a direct valve, and further arranges the circular arc flap 536 below the straight flap 535. The cross-section of the circular arc flap 536 is an arc-shaped. When opened, it can enter the bag opening of the packaging bag through the end, and then the bag opening of the packaging bag is fully opened as the degree of opening increases, and the opening range is always kept larger than the material discharge range, thereby reducing the demand for suction cups. The internal support method can effectively prevent the bag opening from being partially closed, and is more stable. The arc-shaped edge will not cause scratches when the bag opening is opened.

[0089] Furthermore, the material discharge bin includes an upper shell 512 and a lower shell, wherein the lower shell is a double-layer structure, including an outer shell 511 and an inner shell 513, the inner shell 513 is connected to the upper shell 512, the outer shell 511 is sleeved on the outside of the inner shell 513, and a gap is left between the outer shell 511 and the inner shell 513, and an exhaust hole 514 is also provided on the surface of the outer shell 511. In this scheme, by providing the outer shell 511, the bag mouth of the packaging bag is against the lower edge of the outer shell 511 after opening. At this time, the opening width of the packaging bag is greater than the bottom opening width of the inner shell 513, which is conducive to material discharge. In the process of material discharge, the air that may exist in the packaging bag and the excess air in the inner shell 513 that falls with the material enter the gap between the outer shell 511 and the inner shell 513, and are discharged from the exhaust hole 514, which is conducive to improving the smoothness of material discharge.

[0090] The clamping jaw assembly 520 includes a frame 521 arranged on the housing 511, a first driving member 522 arranged on the frame 521, and a pair of clamping jaw bodies 525 hinged on the frame 521. The clamping jaw bodies 525 are driven to open and close by the first driving member 522. In this solution, a pair of clamping jaw assemblies 520 are provided to clamp and fix the packaging bag, thereby increasing the stability of the packaging bag when filling.

[0091] Specifically, the first driving member 522 is a telescopic cylinder, and a clamping claw connecting block 523 is provided at its conveying end. The clamping claw connecting block 523 is symmetrically hinged on both sides along the sliding direction. The two second connecting rods 524 are respectively hinged to the ends of the clamping claw body 525. The clamping claw body 525 is driven to rotate and open and close by the telescopic cylinder and the second connecting rod 524. Figure 3 As shown, the middle part of the clamp body 525 is hinged to the frame 521, one end is provided with a clamp pad, and the other end is hinged to the second connecting rod 524. When the clamp connection block 523 moves up, the second connecting rod 524 drives the clamp body 525 to rotate and open, and vice versa.

[0092] The material doors are rotatably connected to the outer shell 511 via a material door rotating shaft 533 arranged on the surface thereof, wherein the two material doors are driven to open and close via the same second driving member 531 arranged on the outer shell 511. In order to enable the opening and closing material doors to open synchronously, this scheme is driven by the same second driving member 531.

[0093] Specifically, a first driving arm 532 is provided on the material gate shaft 533, a hinge seat is provided at the rear end of the second driving member 531 and is hinged to the outer shell 511, the output end is hinged to one end of one of the first driving arms 532, and a first adjusting arm 534 with adjustable length is hingedly provided between the two first driving arms 532. The two material gate shafts 533 are driven to rotate by a first driving arm 532 respectively, and the two first driving arms 532 are hinged at both ends of the first adjusting arm 44. When one of the first driving arms 532 is driven by the second driving member 531, the other first driving arm 532 drives the corresponding material gate shaft 533 to rotate synchronously towards each other. The first adjusting arm 44 also has a length adjustment function, which is divided into two sections, one of which is telescopically arranged with the other section, and is fixed after adjustment by means of threads and nuts.

[0094] The suction cup assembly 540 is used to open the packaging bag. The suction cup assembly 540 includes at least one pair of clamping tubes 546 hingedly arranged on the outside of the shell assembly 510. The clamping tubes 546 are hollow tubes with a vacuum joint 548 on the surface thereof and a suction cup 547 at the end away from the hinged end. The clamping tubes 546 are arranged on both sides of the shell assembly 510 and are driven to open and close by a third driving member 541 arranged on the shell assembly 510. The suction cup assembly 540 is arranged to open the bag mouth of the fitted packaging bag. It is best to set two suction cups 547 on each side to prevent one of the suction cups 547 from failing. The suction cup assembly 540 is only used to open the middle of the bag mouth for the arc flap 536 to enter, and it is not necessary to maintain the opening degree of the bag mouth and the adsorption strength of the bag mouth.

[0095] A bearing seat 545 and a tube clamp driving shaft 543 are provided on the shell assembly 510, and a second driving arm 542 is provided on the tube clamp driving shaft 543. A hinge seat is provided at the rear end of the third driving member 541 and is hinged to the shell assembly 510. The output end is hinged to one of the second driving arms 542, and a second adjusting arm 544 with adjustable length is also hinged between the two second driving arms 542. This scheme uses the third driving member 541 to synchronously drive the opening and closing of the two clamping tubes 546, and is realized by the second driving arm 542 and the second adjusting arm 544. The principle is the same as that of the first driving arm 532 and the first adjusting arm 534.

[0096] The surface of the shell 511 is also provided with a dust removal joint 515 connected to the interior of the shell 511. For materials that generate a lot of dust, the dust discharged from the exhaust hole 514 is easy to pollute the environment. Therefore, the dust removal joint 515 is connected to an external dust removal device to facilitate direct suction and processing.

[0097] Specifically, when the packaging bag is sent to the bottom of the clamping jaw assembly 520, the clamping jaw assembly 520 operates, so that the two pairs of clamping jaw bodies 525 clamp the upper two sides of the packaging bag respectively, and then the third driving member 541 drives the two clamping tubes 546 to rotate inward so that the suction cup 547 contacts the outside of the bag opening of the packaging bag, and the negative pressure is generated by the external device to suck the middle of the bag opening, and then drives the two clamping tubes 546 to open to both sides, so that the middle of the bag opening of the packaging bag is opened, and then the first driving member 31 is started, driving the material door to rotate downward and open, and the bag opening of the packaging bag is further expanded by the arc flap 536. After the unloading is completed, the first driving member 31 drives the material door to close, and the fully filled packaging bag is clamped by other devices of the production line, and the clamping jaw assembly 520 releases the packaging bag.

[0098] The specific implementation method is as follows: the heavy film packaging bag has an inner and outer layer, a flat cylindrical structure after cutting, and a complete packaging bag can be formed after sealing both ends. The raw material of the packaging bag is wound on the film-releasing component 1, released by the film-releasing component 1, enters the film frame component 2, is pulled by the second film-drawing component 240, and enters the corner sealing component 3. After folding into M edges, the inner and outer layers are heat-sealed and fixed, and then enter the first film-drawing component 230, and are pulled into the lower sealing mechanism 9 to seal the cut segments, and then are clamped by the first clamping claw of the swing arm component 4, and then are temporarily stored by the transfer structure (the transfer structure can be the same as the first clamping claw, and can be set on the outer shell of the device, as shown in the figure The bag is not shown), and then grabbed by the second clamp and placed under the blanking component 5. It is clamped by the clamping claw assembly 520 of the blanking component 5 for blanking. After the blanking is completed, it is clamped by the third clamping claw of the swing arm assembly 4 and placed under the upper sealing mechanism 6. It is clamped and sealed by the upper sealing mechanism 6. The upper sealing mechanism 6 is embedded in the gap of the swing arm assembly 4. A cooling mechanism 7 is also provided in the gap of the swing arm assembly 4. The heat-sealed packaging bag is clamped by the fourth clamping claw of the swing arm assembly 4 and placed under the cooling mechanism 7 to cool the bag mouth and then released. The packaging machine also has a conveying mechanism 8. The finished product after bag making and packaging falls into the conveying mechanism 8 and is conveyed out.

[0099] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An FFS heavy film bag making packaging machine, comprising a film unwinding assembly (1) for unwinding a packaging film, and a film frame assembly (2) for receiving the packaging film from the film unwinding assembly (1) and driving the packaging film for conveying, characterized in that: Also includes A lower sealing mechanism (9) is used to seal and cut the packaging film delivered by the film rack assembly (2) into segments to form a single-opening packaging bag; A swing arm assembly (4) is used to progressively convey the single-opening packaging bags cut out by the lower sealing mechanism (9); A material discharge assembly (5) for injecting material into a single-opening packaging bag, comprising a shell assembly (510), wherein the shell assembly (510) comprises a material discharge bin, and the bottom opening of the material discharge bin is provided with a double-layer material door, wherein one layer of the material door is used for opening and closing the bottom opening of the material discharge bin, and the other layer is used for holding open the packaging bag when opening; The upper sealing mechanism (6) is used to seal the packaging bag after filling.

2. The FFS heavy film bag making packaging machine according to claim 1, characterized in that: The film frame assembly (2) comprises a frame plate (210), wherein a first film-pulling assembly (230) and a second film-pulling assembly (240) are arranged in the frame plate (210), wherein the first film-pulling assembly (230) comprises a first active roller (231), and the second film-pulling assembly (240) comprises a second active roller (241), and the first active roller (231) and the second active roller (241) are each driven by a servo motor (242) arranged on the frame plate (210), and the second active roller (241) and the output shaft end of the corresponding servo motor (242) are openably connected via a clutch device (243) arranged on the frame plate (210).

3. The FFS heavy film bag making packaging machine according to claim 2 is characterized in that: The first film-drawing assembly (230) further comprises a guide roller (233) and an auxiliary deviation-correcting roller (234), wherein a first deviation-correcting sleeve (232) is arranged on the surface of the first active roller (231), and a second deviation-correcting sleeve (235) is arranged on the surface of the auxiliary deviation-correcting roller (234), the clutch device (243) is arranged on the shaft of the second active roller (241), and a transmission pulley (244) is arranged on the shaft of the servo motor (242), which is connected to the clutch device (243) via a belt.

4. The FFS heavy film bag making packaging machine according to claim 2, characterized in that: The frame plate (210) is also provided with a corner sealing assembly (3), and the corner sealing assembly (3) is located between the first film-pulling assembly (230) and the second film-pulling assembly (240). The corner sealing assembly (3) includes a fixed plate (310) and a heat sealing assembly (320) arranged on the fixed plate (310). The heat sealing assembly (320) includes a guide rail (321) and a pair of heat sealing units slidably arranged on the guide rail (321). The two heat sealing units are driven by the same driving mechanism (330) arranged on the fixed plate (310) to move towards each other to heat seal the tubular film.

5. The FFS heavy film bag making packaging machine according to claim 4 is characterized in that: The driving mechanism (330) comprises a swing arm (332), and the swing arm (332) is driven by a telescopic driving member (331) arranged on the fixed plate (310), so that the swing arm (332) rotates along a hinge shaft (333) arranged between the swing arm (332) and the fixed plate (310), wherein a pair of first connecting rods (334) respectively hinged to the two heat sealing units are arranged on the surface of the swing arm (332), and the hinge points of the first connecting rods (334) and the swing arm (332) are located on both sides of the hinge shaft (333). Symmetrically, the heat sealing unit includes a slider (322) slidably arranged on a guide rail (321), a corner sealing pressure plate (326) is arranged on the surface of the slider (322), the corner sealing pressure plate (326) is slidably connected to the slider (322) through a guide structure, and a second spring (325) is arranged on the guide structure, a heat sealing block (327) is arranged on the inner side of the corner sealing pressure plate (326), and a dividing plate (340) is also arranged on the fixed plate (310), which is arranged between the two heat sealing units and is used to fold the tubular film into M edges.

6. The FFS heavy film bag making packaging machine according to claim 1, characterized in that: The swing arm assembly (4) comprises a side plate (410) and a plurality of swing arm units (420), wherein the swing arm unit (420) comprises a swing arm driving shaft (421) rotatably arranged on the side plate (410) and at least one swing arm driven shaft (422), swing arm rods (427) are fixedly arranged at both ends of the swing arm driving shaft (421) and the swing arm driven shaft (422), and a swing arm connecting plate (428) is hinged between adjacent swing arm rods (427) at the same end, and clamping claw units (430) are arranged at both ends of the swing arm connecting plate (428), and the swing arm driving shaft (421) is driven to rotate back and forth so as to drive the clamping claw unit (430) to progressively convey the packaging bag.

7. The FFS heavy film bag making packaging machine according to claim 6, characterized in that: The swing arm driving shaft (421) is driven by a driving source (426) arranged on the side plate (410), wherein a swing arm crankshaft (423) is arranged at the output end of the driving source (426), a swing arm connecting rod (424) is hingedly connected to the swing arm crankshaft (423), a driving connecting arm (425) hingedly connected to the swing arm connecting rod (424) is fixedly arranged on the swing arm driving shaft (421), and the clamping jaw unit (430) includes a clamping jaw mechanism (431), the clamping jaw mechanism (431) is an opening and closing type clamping jaw, which is driven to open and close by a driving unit, and an adjustment plate (433) is also arranged between the clamping jaw mechanism (431) and the swing arm connecting plate (428) for adjusting the spacing between each pair of clamping jaw mechanisms (431), and at least one pair of clamping jaw units (430) has a translation mechanism (432), and the translation mechanism (432) is used to automatically drive the adjustment plate (433).

8. The FFS heavy film bag making packaging machine according to claim 1, characterized in that: The material door for opening and closing the bottom opening of the lower material bin is a straight flap (535), and the material door for holding open the packaging bag when opening is a circular arc flap (536) arranged below the straight flap (535). The lower material bin includes an upper shell (512) and a lower shell, wherein the lower shell is a double-layer structure, including an outer shell (511) and an inner shell (513), the inner shell (513) is connected to the upper shell (512), the outer shell (511) is sleeved on the outside of the inner shell (513), and a gap is left between the outer shell (511) and the inner shell (513), and an exhaust hole (514) is also arranged on the surface of the outer shell (511).

9. The FFS heavy film bag making packaging machine according to claim 8, characterized in that: The unloading assembly (5) also includes a clamping jaw assembly (520), which includes a frame (521) arranged on the outer shell (511), a first driving member (522) arranged on the frame (521), and a pair of clamping jaw bodies (525) hinged on the frame (521), wherein the clamping jaw bodies (525) are driven to open and close by the first driving member (522), and the material door is rotatably connected to the outer shell (511) via a material door rotating shaft (533) arranged on its surface, wherein the two material doors are driven to open and close by the same second driving member (531) arranged on the outer shell (511).

10. The FFS heavy film bag making packaging machine according to claim 9, characterized in that: The unloading assembly (5) also includes a suction cup assembly (540) for opening the packaging bag. The suction cup assembly (540) includes at least one pair of clamping tubes (546) hingedly arranged on the outside of the shell assembly (510). The clamping tubes (546) are hollow tubes, and a vacuum joint (548) is arranged on the surface of the clamping tubes. A suction cup (547) is arranged at the end away from the hinged end. The clamping tubes (546) are arranged on both sides of the shell assembly (510) and are driven to open and close by the same third driving member (541) arranged on the shell assembly (510).

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