Vacuum packaging secondary bagging machine

Abstract

The utility model relates to a vacuum packaging secondary bagging machine which comprises a packaging bag conveying line and a material bag conveying line, the packaging bag conveying line comprises a bag supply conveying mechanism, and a bag conveying deviation rectifying mechanism is in butt joint with the conveying tail end of a bag conveying belt of the bag supply conveying mechanism. The output end of the bag feeding deviation rectifying mechanism is in butt joint with a double-station bag opening and opening mechanism and is in butt joint with two sets of packaging bag pushing mechanisms which are transversely and symmetrically arranged through the double-station bag opening and opening mechanism. The material bag conveying line comprises a material bag screening mechanism, the material bag screening mechanism lifts material bags to the position between a packaging bag pushing mechanism and a double-station bag opening and opening mechanism through a lifting table to push packaging bags, and a heat-sealing bag arranging mechanism and a discharging reversing mechanism are sequentially arranged in the packaging bag pushing direction. According to the vacuum packaging secondary bagging machine, all the assemblies are matched stably and efficiently, and secondary bagging packaging work can be conducted efficiently.

Description

Technical Field

[0001] The utility model relates to a vacuum packaging secondary bagging machine. Background Art

[0002] The secondary bagging machine is used for secondary packaging of materials with regular shapes after primary filling and vacuuming. Secondary packaging can effectively reduce the probability of damage caused by vacuum packaging during logistics and transportation to ensure the hygiene and quality of grain. At present, the secondary bagging process in China is still mostly carried out by manual bagging and sealing, which is more troublesome to operate, has a higher labor intensity for workers, low production efficiency, and uneven hygiene. At the same time, the employment cost of enterprises has remained high for a long time.

[0003] The common bag feeding mechanism is manually adjusted to adapt to the size of the packaging bag to ensure the smooth centering of the centering cylinder, but manual adjustment is cumbersome and has large errors. In addition, when the packaging bag is transported to the centering station, the front-end unlimited position mechanism limits the position of its movement direction, which often leads to the inability to ensure the centering is in the appropriate position, that is, the packaging position cannot be successfully adjusted, and the coordination with the bag opening station after centering needs to be improved, and the efficiency is insufficient.

[0004] In the secondary bagging, the bag opening mechanism generally needs to open the bag mouth and directly connect to the loading and bagging station, then loosen the bag mouth to reset and repeat, and needs to wait for the loading and bagging station to complete the conveying before the next loading and bagging. The work efficiency is low and there is no bag supporting component at the bag opening station to cooperate with the bag opening to stably open the bag mouth, and the stability of bag opening and bag feeding is insufficient.

[0005] The traditional delivery and pushing process is complicated, and the pushing guidance is insufficient. In addition, the package is taken back immediately after being pushed into the bag, which will cause the material package to be pressed when it is transported to the heat sealing station, resulting in heat sealing packaging failure, which needs to be improved urgently.

[0006] It is necessary to screen the hardness of vacuum materials for vacuum secondary packaging, and the mainstream implementation methods can be roughly divided into two types, which are temporarily referred to as "pressing type" and "limited width type". The pressing type is to apply a certain pressure to the material (material package) to observe whether it is deformed, so as to distinguish between soft and hard. There are various ways to apply pressure, but considering that excessive pressure will leave marks on the material, materials with unclear soft and hard characteristics are often not screened out. The pressing type is generally larger in volume after including the screening mechanism. The limited width type uses a conveyor line with a left and right side to clamp the material to provide power, and there is no support at the bottom to achieve screening. Whenever the material width is less than the preset width, the conveyor belts on both sides fail to effectively clamp the material to provide friction, and the material falls naturally. However, the rejection rate is often artificially high due to the natural error of the material width.

[0007] From the current market perspective, the differences in the vacuum material centering mechanisms used in vacuum secondary bagging equipment are mostly different in terms of bases, but they almost have common defects: 1. The six-sided vacuum materials entering the packaging bag mostly rely on fixed-shape molds. The shape of the mold is basically consistent with the vertical cross-section shape of the material movement direction. Once the material is rotated ninety degrees, it is bound to cause interference, and the centering mechanism cannot effectively detect it; 2. The centering mechanism is mostly set after the soft bag detection mechanism. The hard bag that has successfully passed may become a soft bag again due to slow leakage and other reasons. Once the equipment is paused for a long time, there is a dangerous event that the soft bag attempts to pass through the mold, and the centering mechanism cannot effectively detect it.

[0008] From the current market perspective, the demand for aesthetics of vacuum secondary packaging is still increasing, and the arrangement of the mouth of the accordion packaging bag by packaging equipment is a major focus. Looking at the development history of bag sorting, from the initial side blowing, to the simple spring lever, to the bionic action completed by the servo motor and pneumatic fingers, they are all different explorations of bag sorting methods. At the same time, the significant increase in the demand for equipment packaging speed also determines that the bag sorting action must be simple, fast and effective. What's more, the styles of packaging bags are becoming more and more diverse, and the characteristics and distribution of their main and secondary materials are different, which also poses greater challenges to the bag sorting mechanism.

[0009] The existing open application [CN] is a bag sorting and heat sealing mechanism - CN216035522U, which can meet the needs of heat sealing and folding accordion bag type packaging bags by sorting and heat sealing the packaging bags through an auxiliary bag sorting rod, but it only top-joins the middle seam, and its size is insufficient, the position is single, and the control over the deformation of the bag mouth and its applicability are insufficient.

[0010] With the development of the vacuum secondary packaging market, more and more secondary vacuum packaging bags are using styles with longer pre-sealed edges and embedded plastic hand buckles, and the packaging materials are both soft and hard. Due to the direction of the material, the hand buckles of common packaging equipment are mostly at the front when the finished product is discharged. There is often a phenomenon that the hand buckles are against the transition section or the harder pre-sealed edges are stuck in the gap, causing many conveying problems. For this reason, the production line is often equipped with an additional head and tail reversing mechanism, which requires the finished product to start and stop here, which seriously limits the conveying speed. Utility Model Content

[0011] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a vacuum packaging secondary bagging machine, which is not only structurally reasonable but also convenient and efficient.

[0012] In order to solve the above technical problems, the technical solution of the utility model is: a vacuum packaging secondary bagging machine, including a packaging bag conveyor line and a material bag conveyor line, the packaging bag conveyor line includes a bag supply conveying mechanism, and a bag feeding correction mechanism is connected to the conveying end of the bag feeding conveyor belt of the bag supply conveying mechanism, the output end of the bag feeding correction mechanism is connected to a double-station bag opening and supporting mechanism and is respectively connected to two groups of laterally symmetrically arranged packaging bag pushing mechanisms through the mechanism; the material bag conveyor line includes a material bag screening mechanism, which lifts the material bag to between the packaging bag pushing mechanism and the double-station bag opening and supporting mechanism through a lifting platform to push the packaging bag, and a heat-sealing bag sorting mechanism and a material discharge reversing mechanism are sequentially arranged along the direction of pushing the packaging bag.

[0013] Furthermore, the correction mechanism includes a correction component mounted above the conveying end of the bag conveyor belt, the correction component includes a laterally extending correction plate, two correction cylinder mounting plates symmetrically arranged on the correction plate for sliding connection therewith, the two correction cylinder mounting plates are respectively connected to two groups of screw nuts of a screw with positive and negative teeth integrated so as to be driven to slide toward or away from each other, correction cylinders are arranged at the lower ends of the two correction cylinder mounting plates, the piston ends of the two correction cylinders are arranged facing each other and are fixedly connected to the ends with an inverted Z-shaped brush fixing plate, and correction brushes are fixedly arranged at the bottom ends of the brush fixing plates along their longitudinal extension direction; a limiting component for limiting the end of the packaging bag is mounted outside the conveying end of the bag conveyor belt; a longitudinal extension section is fixedly arranged at the bottom of the brush fixing plate, the longitudinal extension section extends toward the side of the limiting component and extends vertically downward at the end to form a vertical shifting section.

[0014] Furthermore, the screw rod extends transversely and is distinguished into two sections with opposite rotation directions to connect with two deviation correction cylinder mounting plates, the screw rod is installed on the deviation correction plate via a bearing seat, and one end of the screw rod is driven to rotate by a deviation correction motor; conveyor belt brackets supporting it are provided on both sides of the bag feeding conveyor belt, and vertical support vertical plates are fixedly provided on both sides of the deviation correction plate and are fixedly connected to the conveyor belt brackets, and the deviation correction motor is fixed on the support vertical plates; the limit assembly includes a limit frame, a limit cylinder is fixedly provided below the top end of the limit frame, the top piston end of the limit cylinder is fixedly connected to the limit connecting plate, the longitudinal end of the limit connecting plate extends out of the limit frame and extends along its transverse length A plurality of limit plates are fixedly connected to the intervals, and the limit plates extend vertically upward to be connected to the ends of the packaging bags; a guide slide is fixedly provided on the top surface of the limit frame, and the guide slide has an inclined plate extending obliquely downward on the side close to the bag feeding conveyor belt for guiding between the limit frame and the bag feeding conveyor belt, and the inclined plate is arranged throughout the transverse width direction of the bag feeding conveyor belt; a clearance opening for subsequent bag opening stations to absorb the upper and lower layers of the packaging bags for tensioning is provided on the top of the limit frame away from the bag feeding conveyor belt and the same position as the limit connecting plate, and at least one group of the clearance openings is arranged and staggered with the limit plates, and a bag supporting rod extending horizontally in the direction of the double-station bag opening and supporting mechanism is fixedly provided on the limit frame.

[0015] Furthermore, the double-station bag opening and holding mechanism includes a bag opening component and a bag holding mechanism that slides laterally and is docked at the conveying end of the bag opening component at a double station, the bag opening component includes a bag opening fixing frame and a bag opening bracket that slides longitudinally on the bag opening fixing frame via a bag opening slide rail, an upper bag opening electric cylinder and a lower bag opening air cylinder are vertically arranged opposite to each other in the bag opening bracket, the telescopic ends of the upper bag opening electric cylinder and the lower bag opening cylinder are both provided with bag opening suction cups, a bag opening moving cylinder is fixed on the bag opening fixing frame and is connected to the bag opening bracket via the cylinder to drive longitudinal sliding; the bag holding mechanism includes two groups of bag holding components, each of which includes two bag holding plates that are arranged in parallel to be connected to the lateral sides of the packaging bag opening; the bag holding plates are fixed at their side ends The bag-supporting crank is rotatably connected to the bag-supporting base plate, and the end of the bag-supporting crank away from the bag-supporting plate is hinged to the piston end of the bag-supporting cylinder to drive the bag-supporting plate to swing in conjunction; the bag-supporting base plate is provided with a bag-clamping cylinder at the side end of the bag-supporting plate to connect the packaging bag to the bag-supporting plate; the lower end of the bag-supporting base plate is slidably connected to a laterally extended switching slide rail through a plurality of sliding blocks, and the lower end of the bag-supporting base plate is also provided with a switching cylinder for driving it to slide laterally to switch the workstation; the bag-supporting base plate is provided with a bag-covering detection switch below the bag-supporting transfer workstation, and two groups of notches for detection by the bag-covering detection switch are correspondingly opened on the bag-supporting base plate; a vacuum generator for driving the bag-covering suction cup to suck and release is provided on the bag-opening bracket.

[0016] Furthermore, the bag pushing mechanism includes a bag pushing component that pushes the material bag on the lifting platform into the bag that is opened by the double-station bag opening and holding mechanism. The bag pushing component includes a longitudinal frame extending longitudinally, on which a longitudinal bag pushing slide rail extending longitudinally is fixed, and a longitudinal pushing plate is driven by a driving member to slide on the bag pushing slide rail. An L-shaped bag pushing plate is vertically slidably connected to the longitudinal pushing plate, and a reset cylinder for driving the bag pushing plate to slide vertically is arranged on the longitudinal pushing plate. A support for supporting the material bag and the bag is arranged below the pushing end of the bag pushing component. A bag pushing channel support plate is used to push the bag to the heat-sealing bag sorting mechanism station; a square boosting opening is provided on the upper surface of the bag pushing channel support plate at the pushing end of the bag pushing component, and a boosting plate is provided in the square boosting opening, and the end of the boosting plate is driven by a boosting cylinder to slide longitudinally to drag the material bag and the packaging bag to the next station; the bag supporting component includes a bag supporting plate that extends into the packaging bag and is supported on both sides of the bag opening, and the top and side of the bag supporting plate close to the bag lifting component are fixedly connected with a bag pushing guide plate for easy guidance, and the bag pushing guide plates are all unfolded outwards to be open.

[0017] Furthermore, the material bag screening mechanism includes a feed conveyor belt, and the discharge end of the feed conveyor belt is provided with a lifting platform and a straight conveyor belt for connecting the discharge, and the straight conveyor belt is provided with a driving component for controlling its up and down swinging; the feed conveyor belt is provided with a soft bag detection component, and the soft bag detection component includes a material clamping plate, and the material clamping plate is provided with a telescopic top column for pressing the material bag; the lifting platform is arranged above the straight conveyor belt, and the lifting platform is driven to rise and fall by a first cylinder to connect or disengage the feeding side of the lifting platform with the discharge end of the feed conveyor belt; the first cylinder is arranged on both end sides of the lifting platform, the double piston rod of the first cylinder is fixedly connected to the lifting platform upward, and the cylinder body of the first cylinder is installed on the external frame; the straight conveyor belt is installed on the conveyor belt frame, and the end side of the conveyor belt frame away from the feed conveyor belt is hinged on the external frame The end side of the belt feeding frame close to the feed conveyor belt is driven to swing by the second cylinder serving as a driving component, so as to connect or disengage the feed side of the straight-through conveyor belt with the discharge end of the feed conveyor belt; the piston rod of the second cylinder is hinged on the conveyor belt frame, and the cylinder body of the second cylinder is hinged on the external frame; the feed conveyor belt is arranged for horizontal transmission; the soft package detection component includes a fixed frame located above the feed conveyor belt, an open clamping cylinder is fixedly connected to the fixed frame, and the material splint has two pieces and is respectively fixedly connected to the piston rods at both ends of the open clamping cylinder; the material splint has two pieces and is located above the feed conveyor belt, and the two material splints are arranged opposite to each other; the telescopic top column is arranged on one of the material splints, a through hole for the top column is opened on the material splint, and a telescopic cylinder for detection is fixedly connected on the non-clamping surface side of the material, and the top column is fixedly connected to the piston rod of the telescopic cylinder for detection.

[0018] Furthermore, the lifting platform is provided with a material centering mechanism with detection, and the lifting platform is provided with an active splint and a driven splint on two opposite sides of the material conveying direction, respectively. The active splint and the driven splint are driven by a driving component to move together or apart in a linked manner, and a resistance scale is also connected to the driven splint, and the translation direction of the active splint and the driven splint is perpendicular to the material conveying direction; a mounting plate of a driving component is provided at the bottom of the lifting platform, and a mounting opening for the active splint and the driven splint is provided on the mounting plate; the driving component includes a transmission belt installed on the bottom surface of the mounting plate, and the transmission direction of the transmission belt is the translation direction of the active splint and the driven splint; one side of the transmission belt A first adapter plate is fixedly connected to the belt body, and the first adapter plate is fixedly connected to the bottom of the driven splint after passing through the installation clearance opening; a second adapter plate is fixedly connected to the belt body on the other side of the transmission belt, and the second adapter plate is fixedly connected to the bottom of the active splint after passing through the installation clearance opening; a slider and rail moving pair is connected between the active splint and the mounting plate, and between the driven splint and the mounting plate, and the guiding direction of the slider and rail moving pair is the translational direction of the active splint and the driven splint; the driving assembly also includes a cylinder, the cylinder body of the cylinder is fixedly connected to the bottom of the mounting plate, and the piston rod of the cylinder is fixedly connected to the bottom of the active splint; the cylinder body of the resistance ruler is fixedly connected to the bottom of the mounting plate, and the telescopic rod of the resistance ruler is fixedly connected to the bottom of the driven splint.

[0019] Furthermore, the heat-sealing bag sorting mechanism includes two sets of follower plates driven by a motor assembly to move toward or away from each other laterally, the lower ends of the follower plates are fixedly connected to bag sorting claws, the bag sorting claws include a transverse adjustment plate connected to the follower plate, the lower end of the transverse adjustment plate is connected to a vertical adjustment plate, the side of the vertical adjustment plate is connected to a longitudinal adjustment plate, the longitudinal adjustment plate is in an inverted L shape, and the ends of the longitudinal adjustment plates are all chamfered with arcs to top-connect the folded edges on both sides of the center seam of the packaging bag; a centering component is provided at the heat-sealing output end along the longitudinal conveying direction of the packaging bag; the longitudinal end of the longitudinal adjustment plate, the transverse end of the transverse adjustment plate and the vertically extending vertical adjustment plate are all provided with strip holes that are conducive to adjustment along their extension directions, and are all connected and fixed by bolts; the motor assembly includes a bag sorting motor, a driving pulley, a driven pulley, a synchronous belt and a fixed frame, the back side of the fixed frame is fixedly connected to a heat-sealing component The heat sealing assembly includes a main board connected to the fixed frame, and the main board drives the upper heat sealing plate and the lower heat sealing plate to slide vertically close to or away from the main board through a linkage assembly. The linkage assembly includes a linkage handle that is laterally symmetrically arranged on the main board, and the center of the linkage handle is rotatably connected to the main board, and the inner and outer sides of the linkage handle are respectively hinged with an upper linkage rod and a lower linkage rod. The lower end of the upper linkage rod is connected to the upper heat sealing plate, and the lower linkage rod is connected to the lower heat sealing plate. A linkage cylinder is fixed on the main board located between the two linkage handles, and the bottom of the piston end of the linkage cylinder is connected to the upper heat sealing plate; the centering assembly includes a discharging conveyor belt, and the frames on both sides of the discharging conveyor belt are supported by vertical support rods, and the lower end of the top plate is fixedly connected with an opening clamping cylinder, and the horizontal ends of the opening clamping cylinder are connected with clamping plates that are driven to move toward or away from each other through piston rods, and the bottom ends of the clamping plates are fixedly connected with a aligning square tube.

[0020] Furthermore, the discharging reversing mechanism includes a discharging output machine, a reversing mechanism is connected to the output end of the discharging output machine, the reversing mechanism includes a flip plate, a power mechanism for driving the flip plate to flip is installed on the end of the flip plate away from the discharging output machine, and a receiving trough is slidably connected on the flip plate corresponding to the conveying direction of the discharging output machine; the reversing mechanism also includes a rotating seat arranged symmetrically on the left and right, and a rotating shaft that cooperates with the rotating seat on the same side is fixedly connected on the left and right sides of the end of the flip plate away from the discharging output machine, one of the rotating shafts extends out of the rotating seat and is movably connected to the power mechanism on the extended end; the power mechanism includes a cylinder bracket, a flip cylinder is hinged on the cylinder bracket, a flip swing arm is installed on the end of the rotating shaft extending out of the rotating seat, one end of the flip swing arm is fixed to the end of the rotating shaft extending out of the rotating seat and is connected to the rotating shaft extending out of the rotating seat The end of the rotating seat rotates synchronously, and the other end of the flip swing arm is hinged with the telescopic end of the flip cylinder; the notch of the material receiving trough faces the end of the flip plate that is docked with the discharging output machine, and a rodless cylinder for driving the material receiving trough to slide is installed on the middle part of the lower plate surface of the flip plate, and a sliding bracket is slidably connected to the lower plate surface of the flip plate, and the sliding bracket is fixedly connected to the material receiving trough; the sliding bracket includes a connecting plate, and the connecting plate is parallel to the flip plate, and connecting wing plates are arranged on the left and right ends of the connecting plate, and the connecting wing plates are perpendicular to the connecting plate, and sliding guide holes for the connecting wing plates to pass through and slide are arranged on the left and right sides of the material receiving trough on the flip plate, and the slider on the rodless cylinder is fixedly connected to the middle part of the connecting plate, and the end of the connecting wing plate passes through the sliding guide hole and is connected to the end on the same side of the material receiving trough.

[0021] Furthermore, the material receiving trough includes a support plate, fixed baffles are provided on the left and right ends of the support plate, one of the sides of the two fixed baffles is connected by a connecting baffle, the side of the support plate away from the connecting baffle is slidably connected to the upper surface of the flip plate, and the two fixed baffles, the connecting baffle, the support plate and the flip plate form a material receiving space; a buffer mechanism is provided on the support plate in the material receiving space, and the buffer mechanism includes a buffer bearing plate, a buffer cylinder is installed on the support plate, the movable end of the buffer cylinder is connected to the buffer bearing plate, and an auxiliary spring is provided between the support plate and the buffer bearing plate on the peripheral side of the buffer cylinder; a plurality of guide holes perpendicular to the surface of the flip plate are provided on the connecting wing plate, and a plurality of guide holes cooperating with the guide holes are provided on the connecting wing plate The cam is an angular channel that is formed on a pair of camshafts, the channel having a central axis and a right angle with the camshaft to allow the cam to move freely in the channel. The camshafts are connected to a pair of camshafts, each of which is connected by a threaded cantilever to form a circle with the centre of the camshaft being wasted. The camshafts are connected by a threaded cantilever to form a circle with the centre of the camshaft being wasted.

[0022] Compared with the prior art, the utility model has the following beneficial effects: through the design of double workstations, that is, when the first workstation is in the workstation docking with the bag-holding mechanism, the second workstation is docked with one of the material pushing and bagging workstations, and then the workstation is switched horizontally. The reciprocating cycle is convenient for increasing work efficiency, and the bag-opening component and the bag-holding component cooperate efficiently, and the bag clamping is stable. The various components of the vacuum packaging secondary bagging machine cooperate stably and efficiently, which is conducive to the efficient secondary bagging and packaging work.

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of the coordination between the deviation-correcting mechanism and the double-station bag-opening and bag-supporting mechanism in the embodiment of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the deviation correction mechanism in the embodiment of the utility model;

[0027] Figure 4 for Figure 3 Schematic diagram of the structure of the middle correction component;

[0028] Figure 5 for Figure 3 Schematic diagram of the structure of the middle limit assembly;

[0029] Figure 6 This is a schematic diagram of the structure of a double-station bag opening and supporting mechanism in an embodiment of the utility model;

[0030] Figure 7 It is a schematic diagram of the cooperation between the bag opening component and the deviation correction mechanism of the double-station bag opening and supporting mechanism;

[0031] Figure 8 It is a schematic diagram of the structure of the bag-holding mechanism in the double-station bag-opening and bag-holding mechanism;

[0032] Fig. 9 It is a schematic diagram of the structure of the bag-holding bottom plate in the double-station bag-opening and bag-holding mechanism;

[0033] Fig.10 This is a schematic diagram of the structure of the packaging bag pushing mechanism in the embodiment of the utility model;

[0034] Fig.11 for Fig.10 A magnified schematic diagram of the middle X;

[0035] Fig.12 for Fig.10 A magnified schematic diagram of Y in the middle;

[0036] Fig.13 This is a diagram showing the working status of the material bag screening mechanism. Figure 1 ;

[0037] Fig.14 This is a diagram showing the working status of the material bag screening mechanism. Figure 2 ;

[0038] Fig.15 This is a diagram showing the working status of the material bag screening mechanism. Figure 3 ;

[0039] Fig.16 Schematic diagram of the structure of the soft package detection component Figure 1 ;

[0040] Fig.17 Schematic diagram of the structure of the soft package detection component Figure 2 ;

[0041] Fig.18 It is a schematic diagram of the working status of the soft bag detection component;

[0042] Fig.19 It is a simplified diagram of the gas connection between the opening clamp cylinder and the telescopic cylinder for detection;

[0043] Fig. 20 Schematic diagram of the structure of the material centering mechanism with detection Figure 1 ;

[0044] Fig.21 Schematic diagram of the structure of the material centering mechanism with detection Figure 2 ;

[0045] Fig. 22 It is a schematic diagram of the structure of the heat-sealing bag-sorting mechanism;

[0046] Fig.23 It is a schematic diagram of the structure of the bag sorting component in the heat-sealing bag sorting mechanism;

[0047] Fig.24 It is a schematic diagram of the structure of the heat sealing component in the heat sealing bag sorting mechanism;

[0048] Fig.25 It is a schematic diagram of the structure of the centering component in the heat-sealing bag-sorting mechanism;

[0049] Fig.26 It is a schematic diagram of the action sequence of the working state of the heat-sealing bag-sorting mechanism;

[0050] Fig. 27 It is a schematic diagram of the crease state of the packaging bag in the heat-sealing bag sorting mechanism;

[0051] Fig.28 The structure diagram of the discharging reversing mechanism Figure 1 ;

[0052] Fig.29 The structure diagram of the discharging reversing mechanism Figure 2 ;

[0053] Fig.30 The structure diagram of the discharging reversing mechanism Figure 3 ;

[0054] Fig.31 It is a schematic diagram of the middle cross-sectional structure of the discharging reversing mechanism;

[0055] Fig.32 It is a side structural schematic diagram of the discharging reversing mechanism;

[0056] Fig.33 This is a schematic diagram of the use status of the discharge reversing mechanism (the finished product falls);

[0057] Fig.34 Schematic diagram of the use status of the discharge reversing mechanism (the flip plate is flipped).

[0058] In the figure: A-discharging reversing mechanism, B-heat sealing bag sorting mechanism, C-correcting mechanism, D-double-station bag opening and supporting mechanism, E-packaging bag pushing mechanism, 15-material centering mechanism with detection, 27-material bag screening mechanism, 28-bag supply and conveying mechanism, 29-main frame. DETAILED DESCRIPTION

[0059] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0060] like Figures 1 to 34 As shown, a vacuum packaging secondary bagging machine comprises a packaging bag conveyor line and a material bag conveyor line which are supported and installed via a main frame, the packaging bag conveyor line comprises a bag supply conveying mechanism, and a bag feeding correction mechanism is connected to the conveying end of the bag feeding conveyor belt of the bag supply conveying mechanism, the output end of the bag feeding correction mechanism is connected to a double-station bag opening and supporting mechanism, and the mechanism is respectively connected to two groups of laterally symmetrically arranged packaging bag pushing mechanisms; the material bag conveyor line comprises a material bag screening mechanism, which lifts the material bag to between the packaging bag pushing mechanism and the double-station bag opening and supporting mechanism via a lifting platform to push the packaging bag, and a heat-sealing bag sorting mechanism and a material discharge reversing mechanism are sequentially arranged along the direction of pushing the packaging bag.

[0061] In the embodiment of the utility model, the bag supply and conveying mechanism is mainly composed of a bag hanging part and a bag pushing part. The bag hanging part is driven by a pneumatic indexing turntable, which rotates four bag hanging rods. The detection signal of the bag taking station is used to detect whether there is a packaging bag on the bag hanging rod to control the start and stop of the pneumatic indexing plate. Two bag hanging turntables are set, and the bag supply operation can be performed alternately. When there is a packaging bag on the bag hanging rod of the bag taking station, the bag pushing lifting cylinder descends to make the bag pushing fork ready, and the bag pushing cylinder pushes the bag toward the suction cup. When the bag pushing detection switch above the bag hanging rod detects the packaging bag at the front end, the bag pushing cylinder stops, and the bag taking suction cup extends to take the bag. After the packaging bag is taken out, the bag pushing rod on the chain makes the packaging bag flat on the bag feeding conveyor belt, and then the packaging bag is sent to the bag spreading station and centered by the conveying mechanism. When the bag hanging rod on the bag hanging station has finished taking the packaging bag, the bag pushing lifting cylinder rises, and the pneumatic indexing plate rotates one station. If the dividing plate detects that there is no bag after one rotation, the bag storage switching cylinder will be activated to switch to another hanging rod turntable.

[0062] In an embodiment of the utility model, the correcting mechanism includes a correcting component mounted above the conveying end of the bag conveying conveyor belt C1, the correcting component includes a laterally extending correcting plate C3, and two correcting cylinder mounting plates C4 symmetrically arranged on the correcting plate are slidably connected to it, and the two correcting cylinder mounting plates are respectively connected to two groups of screw nuts of a screw C5 with integrated positive and negative teeth so as to be driven to slide toward or away from each other, and a correcting cylinder C6 is arranged at the lower end of the two correcting cylinder mounting plates, and the piston ends of the two correcting cylinders are arranged facing each other and are fixedly connected to the ends with an inverted Z-shaped brush fixing plate C7, and the bottom ends of the brush fixing plates are fixedly provided with a correcting brush C8 along the longitudinal extension direction thereof; a limiting component C9 for limiting the end of the packaging bag is arranged outside the conveying end of the bag conveying conveyor belt.

[0063] In the embodiment of the utility model, sliding blocks are fixedly connected to the two deflection cylinder mounting plates, and are slidably connected to the transverse slide rails fixedly arranged on the deviation correction plate through the sliding blocks.

[0064] In the embodiment of the utility model, a longitudinal extension section C10 is fixedly provided at the bottom of the brush fixing plate, and the longitudinal extension section extends toward the side of the limiting component and extends vertically downward at the end to form a vertical shifting section C11. Since the horizontal surface of the receiving platform used to receive the output end of the conveyor belt is generally lower than the upper end surface of the conveyor belt for receiving, the vertical shifting section can be arranged so that when the packaging bag is sent to the limiting frame through the bag conveying conveyor belt, the vertical shifting section can cooperate with the correction brush to limit and align the front end of the packaging belt during the adjustment process.

[0065] In the embodiment of the utility model, the screw rod extends transversely and is divided into two sections with opposite rotation directions to connect the two correction cylinder mounting plates. The screw rod is installed on the correction plate via a bearing seat, and one end of the screw rod is driven to rotate by the correction motor C12.

[0066] In the embodiment of the utility model, conveyor belt brackets C13 supporting the bag conveyor belt are arranged on both sides, and vertical support vertical plates C14 are fixed on both sides of the correcting plate and are fixedly connected to the conveyor belt brackets, and the correcting motor is fixed on the support vertical plates.

[0067] In an embodiment of the utility model, the limiting assembly includes an I-shaped limiting frame C15, a limiting cylinder C16 is fixedly provided below the top of the limiting frame, the top piston end of the limiting cylinder is fixedly connected to a limiting connecting plate C17, the longitudinal end of the limiting connecting plate extends out of the limiting frame and is fixedly connected with a plurality of limiting plates C18 at intervals along its transverse length direction, and the limiting plates all extend vertically upward to be connected to the end of the packaging bag through their longitudinal end faces for limiting.

[0068] In the embodiment of the utility model, a guide slide plate C19 is fixedly provided on the top surface of the limit frame, and a slant plate C20 for guiding between the limit frame and the bag conveyor frame is extended obliquely downward on the side of the guide slide plate close to the bag conveyor belt. The slant plate is arranged in the same length as the bag conveyor belt in the transverse width direction. The arrangement of the slant plate can effectively prevent the conveyor belt from getting stuck between the limit frame and the bag conveyor frame or falling off in the gap.

[0069] In an embodiment of the utility model, a clearance opening C21 is provided on the top of the limiting frame away from the bag conveyor belt and on the same position as the limiting connecting plate for the subsequent bag stretching station to absorb the upper and lower layers of the packaging bag for stretching. At least one group of the clearance openings is provided and is staggered with the limiting plate.

[0070] The working principle of the correcting mechanism in the embodiment of the utility model is as follows: first, the position of the correcting cylinder mounting plate is set according to the width of the packaging bag, that is, the distance between the two correcting cylinder mounting plates is synchronously reduced or increased by rotating the screw rod to adapt to packaging bags of different widths. After being transported by the bag conveyor belt, part of the packaging belt reaches the limit frame and is limited by the limit plate. Then the bag conveyor belt stops, and the two correcting cylinders are started and the correcting brushes are moved toward each other to correct the position of the packaging bag and keep it in the center. The vertical shifting section cooperates to limit and align the front end of the packaging belt. After the correction, the limit cylinder retracts to move the limit plate downward, and at the same time, the suction cup of the bag opening station absorbs the upper and lower layers of the packaging bag at the outlet, and performs transfer and subsequent bag opening actions, and the longitudinal transfer passes through the limit frame. Due to the misalignment of the limit plate, there will be no interference with each other.

[0071] In the embodiment of the utility model, the double-station bag opening and holding bag mechanism includes a bag opening component D1 and a bag holding mechanism D2 that slides laterally and docks at the conveying end of the bag opening component at a double station. The bag opening component includes a bag opening fixing frame D3 and a bag opening bracket D5 that slides longitudinally on the bag opening fixing frame via a bag opening slide rail D4. An upper bag opening electric cylinder D6 and a lower bag opening cylinder D7 are vertically arranged in the bag opening bracket. The telescopic ends of the upper bag opening electric cylinder and the lower bag opening cylinder are both provided with bag opening suction cups D8. A bag opening moving cylinder D is fixed on the bag opening fixing frame. 9 and connected with the bag opening bracket to drive longitudinal sliding; the bag holding mechanism includes two groups of bag holding components D10, each of which includes two bag holding plates D11 arranged in parallel to be connected to the transverse sides of the packaging bag opening, and the double-station bag holding mechanism corresponds to two groups of material discharging and bagging mechanisms, that is, when the first station is at the station docking with the bag holding mechanism, the second station is docked with one of the material discharging and bagging stations, and then the lateral shift is switched, and the reciprocating cycle is convenient for increasing the bagging efficiency. For packaging bags of different specifications, only the bag holding plates need to be replaced to adapt to packaging bags of different specifications.

[0072] In the embodiment of the utility model, the bag-supporting plates are rotatably connected to the bag-supporting base plate D13 via the bag-supporting cranks D12 fixedly connected to the side ends thereof, the middle part of the bag-supporting cranks is rotatably connected to the bag-supporting base plate, and the ends of the bag-supporting cranks away from the bag-supporting plates are hinged to the piston ends of the bag-supporting cylinders D14 to drive the bag-supporting plates to swing in conjunction therewith.

[0073] In the embodiment of the utility model, the bag supporting bottom plate is provided with a bag clamping cylinder D15 at the side end of the bag supporting plate for connecting the packaging bag to the bag supporting plate, and the piston end of the bag clamping cylinder is fixed with a bag clamping silica gel D16 for facilitating clamping.

[0074] In the embodiment of the utility model, the upper surface of the bag supporting bottom plate is provided with a limiting groove D17 for limiting the swinging of the bag supporting plate.

[0075] In the embodiment of the utility model, the lower end of the bag supporting bottom plate is slidably connected to a laterally extending switching slide rail D18 via a plurality of sliders, and the lower end of the bag supporting bottom plate is also provided with a switching cylinder D19 for driving it to slide laterally to switch workstations.

[0076] In the embodiment of the utility model, the bag supporting bottom plate is provided with a bagging detection switch D20 below the bag supporting transfer station, and two groups of notches D21 for detection by the bagging detection switch are correspondingly opened on the bag supporting bottom plate.

[0077] In the embodiment of the utility model, a vacuum generator D22 for driving the bag opening suction cup to suck and release is provided on the bag opening bracket, and the vacuum generator is connected to the bag opening suction cup through a pipeline.

[0078] In the embodiment of the utility model, the feeding end of the bag opening assembly is connected to the feeding deviation correction mechanism, and a bag supporting rod D23 for supporting the packaging bag is arranged between the feeding deviation correction mechanism and the bag opening assembly.

[0079] The working principle of the double-station bag-opening and bag-supporting mechanism in the embodiment of the utility model is as follows: first, the upper bag-opening electric cylinder and the lower bag-opening air cylinder extend toward each other to press and clamp the bag, and at the same time, the vacuum generator is turned on to form a negative pressure environment in the bag-opening suction cup and the corresponding vacuum pipeline in time, and the bag-opening suction cup grabs the surface of the bag on one side after contacting the outer bag. After the bag-opening suction cup grabs the surface of the bag, the lower bag-opening air cylinder is completely retracted, and the upper bag-opening electric cylinder is lifted to the corresponding height as needed to achieve bag opening. After the bag is opened, the bag opening and moving cylinder contracts to move the packaging bag horizontally and is supported by the bag dragging rod. When it is in place, it is docked with the bag supporting component. At this time, the bag supporting cylinder of this station contracts to expand the bag supporting plate to support the two horizontal sides of the bag opening. At the same time, the bag clamping cylinder extends to clamp the packaging bag on the bag supporting plate for horizontal transfer. After clamping, the switching cylinder starts to move the bag supporting component of this station horizontally to dock with the packaging bag pushing mechanism on that side, and synchronously move the idle bag supporting component on the other side that has completed bagging and discharging to the station docking with the bag supporting component, and repeat this cycle, which is efficient and convenient.

[0080] In the embodiments of the utility model, the bag pushing mechanism includes a bag pushing component E6 which pushes the material bag on the lifting platform into the bag which is opened by the double-station bag opening and supporting mechanism. The bag pushing component includes a longitudinal frame E7 which extends longitudinally. A longitudinal bag pushing rail E8 is fixed on the longitudinal frame and a longitudinal pushing plate E9 is driven by a driving member to slide on the bag pushing rail. An L-shaped bag pushing plate E10 is vertically slidably connected to the longitudinal pushing plate. A reset cylinder E11 which drives the bag pushing plate to slide vertically is provided on the longitudinal pushing plate. A bag pushing channel support plate E12 which supports the material bag and the bag and pushes them to the next station is provided below the pushing end of the bag pushing component.

[0081] In an embodiment of the utility model, a square boosting opening E13 is provided on the upper surface of the package pushing channel support plate at the pushing end of the package pushing assembly, and a boosting plate E14 is provided in the square boosting opening. The end of the boosting plate is driven by a boosting cylinder E15 to slide longitudinally to drag the material package and the packaging bag to the heat sealing station. The boosting cylinder is fixedly connected to the lower end surface of the boosting plate.

[0082] In the embodiment of the utility model, the driving member is composed of a synchronous belt E16, a bag pushing motor E17 and two pulleys E18. The longitudinal push plate is fixedly connected to the synchronous belt and is driven by the synchronous belt to move longitudinally through the bag pushing motor.

[0083] In the embodiment of the utility model, a bag pushing rubber block E19 which is beneficial to pushing the bag is fixedly provided at the end of the horizontal section of the bag pushing plate.

[0084] In an embodiment of the utility model, the bag supporting assembly includes a bag supporting plate E20 extending into the packaging bag and supported on both lateral sides of the bag opening. The top and side of the bag supporting plate close to the bag lifting assembly are fixedly connected with a bag pushing guide plate E21 for easy guidance. The bag pushing guide plates are all unfolded outward to be open.

[0085] In the embodiment of the utility model, the bag lifting assembly includes a bag lifting plate E22, and bag lifting cylinders E23 for driving the bag lifting plate to rise and fall are arranged at the lower ends of both lateral sides of the bag lifting plate.

[0086] In the embodiment of the utility model, a detection switch E24 for sensing whether a bag is being supported below is provided on the longitudinal frame located directly above the bag supporting assembly.

[0087] In the embodiment of the utility model, the bag-stretching assembly further comprises a bag-clamping cylinder E25 arranged at the side end of the bag-stretching plate for laterally pressing the packaging belt onto the bag-stretching plate.

[0088] In the embodiment of the utility model, the bag-supporting plates are rotatably connected to the bag-supporting base plate D13 via the bag-supporting cranks D12 fixedly connected to the side ends thereof, the middle part of the bag-supporting cranks is rotatably connected to the bag-supporting base plate, and the ends of the bag-supporting cranks away from the bag-supporting plates are hinged to the piston ends of the bag-supporting cylinders D14 to drive the bag-supporting plates to swing in conjunction therewith.

[0089] The working principle of the packaging bag pushing mechanism in the embodiment of the utility model is as follows: first, when the material bag is conveyed to the bag lifting plate, the packaging bag is stretched open by the bag opening plate and moved horizontally to the bag entering station, the bag lifting cylinder extends to push the material bag to the same water position as the packaging bag, the reset cylinder extends to move the bag pushing plate down to the same level as the material bag, and then the bag pushing motor rotates to drive the longitudinal pushing plate to move horizontally on the longitudinal frame, and then the bag pushing plate pushes the material bag located on the bag lifting plate into the packaging bag along the bag pushing guide plate and the bag supporting plate, and after entering, the bag clamping cylinder contracts, and allows the bag pushing plate to continue to push the bag to the end, so that it is located on the booster plate, and then driven by the booster cylinder to move longitudinally to the subsequent heat sealing station for sealing.

[0090] In an embodiment of the utility model, on the material bag conveyor line, the material bag screening mechanism includes a feed conveyor belt 1, and the discharge end of the feed conveyor belt is provided with a lifting platform 2 and a straight conveyor belt 3 for connecting the discharge, and the straight conveyor belt is provided with a driving component for controlling its up and down swinging; the feed conveyor belt is provided with a soft bag detection component 4, and the soft bag detection component includes a material splint 5, and the material splint is provided with a telescopic top column 6 for pressing the material (material bag).

[0091] The soft bag detection component of the utility model basically adopts the pressing type. Different from the common pressing type, its pressure is divided into two parts. The first part is the large-area pressure of the material clamping plate, which does not require pressure, but is more for determining the reference and positioning the material; the second part is the telescopic top column pressing, which has a relatively large pressure. The telescopic top column adopts a rubber head, which does not cause much damage to the material. In addition, this mechanism adds a lifting platform and a straight conveyor belt as a screening method, so that there are more choices for the flow direction of the material.

[0092] In the embodiment of the utility model, the lifting platform is arranged above the straight conveyor belt, and the lifting platform is driven to rise and fall by the first cylinder 7, so that the feed side of the lifting platform is connected with or disconnected from the discharge end of the feed conveyor belt.

[0093] In the embodiment of the utility model, the first cylinder is arranged at both ends of the lifting platform, the double piston rods of the first cylinder are fixedly connected to the lifting platform upward, and the cylinder body of the first cylinder is installed on the external frame.

[0094] In the embodiment of the utility model, the straight-through conveyor belt is installed on a conveyor belt frame 8, and the end side of the conveyor belt frame away from the feed conveyor belt is hinged on an external frame. The end side of the conveyor belt frame close to the feed conveyor belt is driven to swing by a second cylinder 9 serving as a driving component to connect or disconnect the feed side of the straight-through conveyor belt with the discharge end of the feed conveyor belt.

[0095] In the embodiment of the utility model, the piston rod of the second cylinder is hinged on the conveyor frame, and the cylinder body of the second cylinder is hinged on the external frame.

[0096] In an embodiment of the utility model, the feed conveyor belt is arranged for horizontal transmission.

[0097] In the embodiment of the utility model, the soft bag detection assembly includes a fixed frame 10 located above the feed conveyor belt, and an open clamp cylinder 11 is fixedly connected to the fixed frame. The material clamp has two pieces and is respectively fixedly connected to the piston rods at both ends of the open clamp cylinder.

[0098] In the embodiment of the utility model, there are two material clamping plates and they are located above the feed conveyor belt, and the two material clamping plates are arranged opposite to each other.

[0099] In the embodiment of the utility model, the telescopic push column is arranged on one of the material clamping plates, which is provided with a push column clearance hole 12, and a telescopic cylinder 13 for detection is fixedly connected to the non-clamping surface side of the material, and the push column is fixedly connected to the piston rod of the telescopic cylinder for detection.

[0100] In the embodiment of the utility model, the working principle of the multi-channel material screening mechanism is:

[0101] 1. By Figure 13-Figure 15 visible, Figure 13-Figure 15 These are the three working modes of the organization. Fig.13 In the general working mode, the inspected materials enter the lifting platform and go to the upper level for packaging. Fig.14 The rejection mode is required for screening out materials. At this time, unqualified materials fall into the straight conveyor belt, which briefly reverses (counterclockwise) to send the materials under the feed conveyor belt. Fig.15 In the straight-through conveying mode, the straight-through conveyor belt connects to the feed conveyor belt, and the straight-through conveyor belt rotates forward (clockwise). The material passes through the equipment directly. Products that do not require secondary bagging skip this process and directly enter the next process on the production line. At this time, the material does not need to be screened, and there is no problem of the screening function being occupied.

[0102] 2. Principle of soft package detection component: Fig.16 and Fig.17 Represent the retracted and extended states respectively. Fig.19 As shown, the open clamp cylinder and the detection telescopic cylinder on the air path are connected in parallel and act synchronously. When the open clamp is clamped, the top column extends together. At this time, if there is no obstruction, the top column will exceed the material clamping surface. When the open clamp is opened, the top column retracts together, and at this time, the top column retracts to within the material clamping surface. When there is material (material bag) 14 and the material hardness is sufficient, the top column will be flush with the material clamping surface, and the detection telescopic cylinder moves to a fixed stroke position. Only at this moment can the material be judged as qualified.

[0103] 3. If Fig.19 It can be seen that the pressure of the opening clamp cylinder and the telescopic cylinder for testing are adjusted synchronously, and the diameter of the opening clamp cylinder is slightly larger than that of the telescopic cylinder for testing, which can ensure that the top column will not push the opening clamp cylinder in the opposite direction. And according to the material hardness testing standard, the pressure regulating table can be adjusted to meet different hardness requirements.

[0104] In an embodiment of the utility model, the lifting platform is provided with a material centering mechanism 15 with detection, and the lifting platform is provided with an active splint 16 and a driven splint 17 on two opposite sides in the material conveying direction. The active splint and the driven splint are driven by a driving component to move together or apart in a linked manner, and a resistance scale 18 is also connected to the driven splint to detect its position in real time.

[0105] The material centering mechanism with detection can determine whether the parking posture of the incoming six-sided vacuum material meets the requirements, and can detect vacuum materials that have accidentally softened when the equipment is paused.

[0106] In the embodiment of the utility model, the translation direction of the active clamping plate and the driven clamping plate is perpendicular to the material conveying direction.

[0107] In the embodiment of the utility model, a mounting plate 19 of a driving assembly is provided at the bottom of the material parking plate, and a mounting opening 20 for the active clamping plate and the driven clamping plate is provided on the mounting plate.

[0108] In the embodiment of the utility model, the driving assembly includes a transmission belt 21 installed on the bottom surface of the mounting plate, and the transmission direction of the transmission belt is the translation direction of the active clamping plate and the driven clamping plate.

[0109] In an embodiment of the utility model, a first adapter plate 22 is fixedly connected to the belt body on one side of the transmission belt, and the first adapter plate is fixedly connected to the bottom of the driven splint after passing through the installation clearance opening; a second adapter plate 23 is fixedly connected to the belt body on the other side of the transmission belt, and the second adapter plate is fixedly connected to the bottom of the active splint after passing through the installation clearance opening.

[0110] In the embodiment of the utility model, a slider and rail moving pair 24 is connected between the active clamping plate and the mounting plate, and between the driven clamping plate and the mounting plate. The guiding direction of the slider and rail moving pair is the translation direction of the active clamping plate and the driven clamping plate.

[0111] In the embodiment of the utility model, the driving assembly further comprises a cylinder 25, a cylinder body of the cylinder is fixedly connected to the bottom of the mounting plate, and a piston rod of the cylinder is fixedly connected to the bottom of the active clamping plate.

[0112] In an embodiment of the utility model, the cylinder of the resistance ruler is fixedly connected to the bottom of the mounting plate, and the telescopic rod of the resistance ruler is fixedly connected to the bottom of the driven clamping plate.

[0113] In an embodiment of the utility model, the active clamping plate and the driven clamping plate are symmetrically arranged along the center line of the material conveying direction.

[0114] In an embodiment of the utility model, the resistance ruler is electrically connected to the control module.

[0115] In the embodiment of the utility model, the working principle of the material centering mechanism with detection is:

[0116] The material centering mechanism with detection is powered by a cylinder, driven by a transmission belt, supported and guided by a slider and rail moving pair, and equipped with a resistance scale to detect the material status. Specifically:

[0117] When the mechanism is ready, the cylinder extends, the active clamp and the driven clamp move away from each other, open to the maximum, and completely clear the material parking channel on the material parking plate, waiting for the arrival of the material. After the six-sided vacuum material arrives at the material parking channel of the material parking plate on the mechanism, the cylinder retracts, and drives the active and driven clamps on both sides to move synchronously to the middle symmetry line through the transmission belt, and pushes the material to correct its posture. After the active and driven clamps on both sides completely clamp the six-sided vacuum material, the distance L between the active and driven clamps depends on the distance between the two parallel surfaces of the clamped six-sided vacuum material. At this time, the resistance scale reads the position of the driven clamp, and the actual distance L can be converted.

[0118] For the six-sided vacuum materials formed by fixed molds, the fluctuation of their length, width and height dimensions is generally within plus or minus 3mm, while the length and width of most specifications of the molded materials differ by more than 30mm. If the material is softened, its compression deformation is usually not less than 30mm, and the distinguishing characteristics are very obvious. Therefore, by comparing the actual spacing L with the pre-set theoretical spacing L0, and calculating the absolute value of the difference between the two, it can be determined whether the material state is normal. It can effectively avoid serious interference between materials and molds, and can also serve as a self-check for the correspondence between packaging specifications and materials.

[0119] In an embodiment of the utility model, the heat-sealing bag sorting mechanism includes two groups of follower plates B1 driven by a motor assembly to move toward or away from each other laterally, the lower ends of the follower plates are fixedly connected to bag sorting claws B2, the bag sorting claws include a transverse adjustment plate B3 connected to the follower plates, the lower ends of the transverse adjustment plates are connected to vertical adjustment plates B4, the sides of the vertical adjustment plates are connected to longitudinal adjustment plates B5, the longitudinal adjustment plates are in an inverted L shape, and the ends of the longitudinal adjustment plates are all arc chamfered B6 to be connected to the folded edges on both sides of the center seam of the packaging bag; a centering component B7 is arranged at the heat-sealing output end along the longitudinal conveying direction of the packaging bag, and the motor assembly and the bag sorting claws are combined to form a bag sorting component B37.

[0120] In the embodiment of the utility model, the longitudinal end of the longitudinal adjustment plate, the transverse end of the transverse adjustment plate and the vertically extending vertical adjustment plate are all provided with strip holes B8 that are convenient for adjustment along their extension direction, and are all connected and fixed by bolts.

[0121] In an embodiment of the utility model, the motor assembly includes a bag sorting motor B9, a driving pulley B10, a driven pulley B11, a synchronous belt B12 and a fixed frame B13. The synchronous belt is wound around the driving pulley and the driven pulley. The motor drives the driving pulley to rotate. The top of the follower plate is fixedly connected to both sides of the synchronous belt, and the bag sorting motor is fixedly connected to the fixed frame.

[0122] In an embodiment of the utility model, a heat sealing component B14 is fixedly connected to the back side of the fixed frame, and the heat sealing component includes a main board B15 connected to the fixed frame. The main board drives the upper heat sealing plate B38 and the lower heat sealing plate B39 to slide vertically closer or farther through the linkage component B16. The linkage component includes a linkage handle B17 that is laterally symmetrically arranged on the main board. The center of the linkage handle is rotatably connected to the main board. The inner and outer sides of the linkage handle are respectively hinged with an upper linkage rod B18 and a lower linkage rod B19. The lower ends of the upper linkage rods are connected to the upper heat sealing plate, and the lower linkage rods are connected to the lower heat sealing plate. A linkage cylinder B20 is fixedly provided on the main board between the two linkage handles, and the bottom of the piston end of the linkage cylinder is connected to the upper heat sealing plate.

[0123] In the embodiment of the utility model, the back side of the main board is slidably connected to a vertical slide rail B22 on an adjustment plate via a slider B21. A ball screw pair B23 is fixed on the adjustment plate and connected to the main board via a screw nut for upgraded adjustment.

[0124] In the embodiment of the utility model, the fixed frame is fixedly provided with a transverse slide rail B24 along its transverse extension direction, and the transverse adjustment plates are fixedly connected with transverse sliders B25 and are slidably connected to the transverse slide rail via the transverse sliders.

[0125] In the embodiment of the utility model, the fixed frame is provided with sensing switches 26 at intervals along its lateral extension direction, and the sensing switches are respectively an inner limit switch B27, an origin switch B28 and an outer limit switch B29 from the inside to the outside, and a position sensing strip B30 docking with the sensing switch is fixedly connected to the upper end of one of the bag sorting claws.

[0126] In the embodiment of the utility model, the centering component includes a discharge conveyor belt B31, and the frames on both sides of the discharge conveyor belt are supported by top plates B33 through vertical support rods B32. The lower end of the top plate is fixedly connected to an open clamp cylinder B34, and the lateral ends of the open clamp cylinder are connected to clamp plates B35 driven by piston rods to move horizontally toward or away from each other, and the bottom ends of the clamp plates are fixedly connected to aligning square tubes B36.

[0127] The functions realized by this mechanism are heat seal height adjustment, bag opening arrangement and heat sealing. The height adjustment is powered by the lifting motor at the top of the ball screw pair, guided by the guide rail slider, and driven by the screw nut. Bag opening closing requires the upper and lower heat sealing plates to move symmetrically relative to the expected horizontal plane, so a pair of linkage handles are used to ensure the symmetry of their movements and the consistency of movement speed. It is powered by a cylinder and guided by the guide rail slider.

[0128] The centering component mainly realizes the centering positioning and fixing of the material packaging bag, and helps the material to accurately stop at the predetermined processing position, playing a role similar to a damper. The position where the material stops on the material handling platform directly affects the position where the heat-sealed part falls on the packaging bag, and also directly determines whether the bag sorting claw can apply the same deformation to the accordion edges on both sides. The part of this mechanism that directly contacts the material is a smooth stainless steel square tube. The thinner square tube can adapt to different material thicknesses. The centering action is powered by the open clamp cylinder.

[0129] The bag sorting part is connected to the main board of the heat sealing component, and rises and falls synchronously with the heat sealing component to ensure that it is synchronously corresponding to the heat sealing level. The bag sorting claw needs to exert an impact on both sides of the packaging bag to the same extent. For this purpose, a synchronous belt is used as a transmission, and the guide rail slider guides its movement. The power is selected as a servo motor, and the flexible bag sorting claw movement can fully cooperate with the bag opening to adapt to packaging bags with different characteristics.

[0130] The bag sorting action is completed by the cooperation of the bag sorting claws and the upper and lower heat sealing plates. Fig.26 As shown. After the bag-handling claws cause the accordion edge to initially deform, the heat-sealing plate begins to contact the upper and lower edges of the packaging bag. At this time, the bag-handling claws will choose to stay or withdraw immediately depending on the situation. Generally, a harder bag can ensure that the accordion edge is neatly folded and completed under the guidance of the initial deformation, while a softer bag requires the bag-handling claws to stay for support.

[0131] like Fig. 27 The figure shows the deformation of the folded mouth of an accordion bag. It can be seen that in addition to the center seam that existed at the beginning, two new (oblique) creases (bold parts) are formed during the deformation. Common bag sorting mechanisms press the center seam to induce initial deformation. This method cannot effectively control the shape of the deformation collapse angle, and ultimately leads to uncontrollable sealing effect. The points acting symmetrically on both sides of the center seam cooperate with the longitudinal adjustment plate to control the position of the (oblique) crease formation and the folding depth of the center seam. The control over the deformation of the bag mouth is greatly enhanced.

[0132] In an embodiment of the utility model, the discharging reversing mechanism includes a discharging output machine A1, a reversing mechanism A2 is docked on the output end of the discharging output machine, the reversing mechanism includes a flip plate A3, a power mechanism A4 for driving the flip plate to flip is installed on the end of the flip plate away from the discharging output machine, a receiving trough A5 is slidably connected on the flip plate corresponding to the conveying direction of the discharging output machine, when in use, an output conveyor belt A28 different from the output direction of the discharging output machine is arranged below the discharging output machine, the flip plate of the reversing mechanism can swing and dock between the discharging output machine and the output conveyor belt, the reversing mechanism is located on the side of the output conveyor belt, when the flip plate is horizontal, the flip plate is docked with the output conveyor belt, when the flip plate is upturned, the flip plate is docked with the discharging output machine, when in use, first, the flip plate is docked with the discharging output machine, the finished product A30 output by the flip plate discharging output machine will fall on the receiving trough of the flip plate, and then the flip plate is flipped to the horizontal under the action of the power mechanism, the flip plate is docked with the output conveyor belt, and the receiving trough pushes the finished product into the output conveyor belt to realize reversal.

[0133] In this embodiment, in order to realize the swinging of the reversing mechanism, the reversing mechanism also includes a rotating seat A6 that is symmetrically arranged on the left and right sides. The left and right sides of the end of the flip plate away from the discharging and outputting machine are symmetrically fixed with rotating shafts A7 that cooperate with the rotating seat on the same side. One of the rotating shafts extends out of the rotating seat, and the extended end is movably connected to the power mechanism. The power mechanism drives one of the rotating shafts to rotate, thereby driving the entire flip plate to swing. The specific structure of the power mechanism is as follows: the power mechanism includes a cylinder bracket A8, and a flip cylinder A9 is hinged on the cylinder bracket. A flip swing arm A10 is installed on the end of the rotating shaft extending out of the rotating seat. One end of the flip swing arm is fixed to the end of the rotating shaft extending out of the rotating seat and rotates synchronously with the end of the rotating shaft extending out of the rotating seat. The other end of the flip swing arm is hinged to the telescopic end of the flip cylinder, that is, the flip swing arm plays the role of a crank, and the flip swing arm is driven to swing by the flip cylinder, thereby driving the flip plate to swing. At the same time, the cylinder bracket and the rotating seat are fixed on the frame of the packaging machine.

[0134] In this embodiment, in order to realize the sliding of the material receiving trough, the notch of the material receiving trough faces the end of the flip plate that is connected to the material output machine, and an existing rodless cylinder A11 for driving the material receiving trough to slide is installed on the middle part of the lower plate surface of the flip plate. The sliding direction of the slider of the rodless cylinder corresponds to the output direction of the material output machine. A sliding bracket A12 is slidably connected to the lower plate surface of the flip plate. The sliding bracket is fixedly connected to the slider A13 on the rodless cylinder. The sliding bracket is fixedly connected to the material receiving trough. The movement of the sliding bracket is realized by the sliding of the slider of the rodless cylinder, thereby driving the movement of the material receiving trough. More specifically: the sliding bracket includes a connecting plate, and the connecting plate A14 Parallel to the flip plate, the connecting plate is located under the flip plate, and connecting wing plates A15 are provided on the left and right ends of the connecting plate, and the connecting wing plates are perpendicular to the connecting plate. Sliding guide holes A16 for the connecting wing plates to pass through and slide are provided on the left and right sides of the material receiving trough on the flip plate, and the length direction of the sliding guide hole is parallel to the sliding direction of the slider of the rodless cylinder. The slider on the rodless cylinder is fixedly connected to the middle part of the connecting plate, and the slider is located between the two connecting wing plates, and the end of the connecting wing plate passes through the sliding guide hole and is connected to the end on the same side of the material receiving trough, that is, the sliding of the slider of the rodless cylinder drives the connecting plate to slide, and then drives the connecting wing plate to slide, thereby driving the material receiving trough to slide.

[0135] In this embodiment, the specific structure of the material receiving trough is as follows: the material receiving trough includes a support plate A17, fixed baffles A18 are arranged on the left and right ends of the support plate, one side of the two fixed baffles is connected by a connecting baffle A29, and the side of the support plate away from the connecting baffle is slidably connected to the upper surface of the flip plate, the two fixed baffles, the connecting baffle, the support plate and the flip plate form a material receiving space, that is, the body of the support plate is perpendicular to the upper surface of the flip plate, and the opening of the material receiving space faces the end of the flip plate that is connected to the discharge output machine.

[0136] In this embodiment, in order to achieve buffering of the finished products by the receiving trough and prevent the finished products from falling and being damaged, a buffer mechanism is arranged on the support plate in the material receiving space, and the buffer mechanism includes a buffer bearing plate A19, and an existing buffer cylinder A20 is installed on the support plate. The movable end of the buffer cylinder is connected to the buffer bearing plate. When in use, after the finished product falls, it is sent into the receiving trough along the flip plate, and then collides with the buffer bearing plate. The impact force of the collision drives the buffer cylinder to retract to achieve buffering. At the same time, the rodless cylinder can also move downward synchronously to further achieve buffering. An auxiliary spring A21 is arranged between the support plate and the buffer bearing plate on the surrounding side of the buffer cylinder. The auxiliary spring is used for resetting the buffer cylinder. At the same time, a buffer pad such as a rubber pad can be installed on the side of the buffer bearing plate facing the finished product to further prevent the finished product from falling and being damaged.

[0137] In this embodiment, in order to realize that the material receiving trough can adapt to finished products of various specifications, the connecting wing plate is provided with a plurality of guide holes A22 perpendicular to the flip plate surface, and the connecting wing plate is provided with a plurality of screws cooperating with the guide holes, that is, by sliding and locking the screws on the guide holes, the size of the material receiving space can be adjusted to achieve adaptation to finished products of various specifications.

[0138] In this embodiment, a swing bracket A23 is installed on the lower plate surface of the end of the flip plate away from the discharging output machine, and the swing bracket includes a swing base plate A24. The swing base plate is parallel to the flip plate, and swing wing plates A25 are symmetrically arranged on the left and right sides of the swing base plate. The rotating shaft is fixed to the outer side of the swing wing plate, and the rotating shaft drives the flip plate to rotate through the swing bracket. At the same time, in order to avoid interference, the distance between the connecting plate and the flip plate is smaller than the distance between the swing base plate and the flip plate, and the distance between the two connecting wings is smaller than the distance between the two swing wings.

[0139] In this embodiment, in order to achieve the docking between the discharging output machine and the flip plate, the output port of the discharging output machine is located on the upper side between the rotating seats. The discharging output machine is a conveyor belt. Guide baffles A26 are arranged on the left and right sides of the conveyor belt. One end of the guide baffle extends out of the conveyor belt output port and extends toward the rotating seat on the same side to form an extended end. A transition plate A27 docking with the conveyor belt output port is connected between the two extended ends, and the transition plate docks with the flip plate.

[0140] In this embodiment, when in use, the flip plate is initially tilted, and the receiving trough stops in the middle of the flip plate, waiting for the finished product to be sent out by the conveyor. When the finished product reaches the flip plate and slides down, the receiving trough moves down synchronously, causing it to brake slowly to prevent impact damage to the finished product. Finally, the flip cylinder drives the flip swing arm to make the flip plate fall horizontally, and the receiving trough pushes out the finished product to complete the discharging action, which not only folds the conveying space, but also allows the material to quickly achieve reversal.

[0141] The utility model is not limited to the above-mentioned best implementation mode. Anyone can derive other forms of vacuum packaging secondary bagging machines under the inspiration of the utility model. All equivalent changes and modifications made according to the scope of the patent application of the utility model shall fall within the scope of the utility model.

Claims

1. A vacuum packaging secondary bagging machine, characterized in that: It includes a packaging bag conveyor line and a material bag conveyor line. The packaging bag conveyor line includes a bag supply conveying mechanism, and a bag delivery correction mechanism is connected to the conveying end of the bag delivery conveyor belt of the bag supply conveying mechanism. The output end of the bag delivery correction mechanism is connected to a double-station bag opening and supporting mechanism, and is respectively connected to two groups of laterally symmetrically arranged packaging bag pushing mechanisms through the mechanism; the material bag conveyor line includes a material bag screening mechanism, which lifts the material bag to between the packaging bag pushing mechanism and the double-station bag opening and supporting mechanism through a lifting platform to push the packaging bag, and a heat-sealing bag sorting mechanism and a material discharge reversing mechanism are sequentially arranged along the direction of pushing the packaging bag.

2. A vacuum packaging secondary bagging machine according to claim 1, characterized in that: The correcting mechanism includes a correcting assembly mounted above the conveying end of the bag conveying conveyor belt, the correcting assembly includes a laterally extending correcting plate, two correcting cylinder mounting plates symmetrically arranged on the correcting plate are slidably connected to the correcting plate, the two correcting cylinder mounting plates are respectively connected to two groups of screw nuts of a screw with positive and negative teeth integrated so as to be driven to slide toward or away from each other, a correcting cylinder is arranged at the lower end of the two correcting cylinder mounting plates, the piston ends of the two correcting cylinders are arranged facing each other and are fixedly connected to the ends with an inverted Z-shaped brush fixing plate, and a correcting brush is fixedly arranged at the bottom end of the brush fixing plate along its longitudinal extension direction; a limiting assembly for limiting the end of the packaging bag is mounted outside the conveying end of the bag conveying conveyor belt; a longitudinal extension section is fixedly arranged at the bottom of the brush fixing plate, the longitudinal extension section extends toward the side of the limiting assembly and extends vertically downward at the end to form a vertical shifting section.

3. A vacuum packaging secondary bagging machine according to claim 2, characterized in that: The screw rod extends transversely and is distinguished into two sections with opposite rotation directions to connect the two deviation correction cylinder mounting plates. The screw rod is installed on the deviation correction plate via a bearing seat, and one end of the screw rod is driven to rotate by a deviation correction motor; conveyor belt brackets supporting it are provided on both sides of the bag feeding conveyor belt, and vertical support vertical plates are fixedly provided on both sides of the deviation correction plate and are fixedly connected to the conveyor belt brackets, and the deviation correction motor is fixed on the support vertical plates; the limit assembly includes a limit frame, and a limit cylinder is fixedly provided at the bottom of the top of the limit frame, and the piston end at the top of the limit cylinder is fixedly connected to the limit connecting plate, and the longitudinal end of the limit connecting plate extends A limit frame is extended out and is fixedly connected with a plurality of limit plates at intervals along its transverse length direction, and the limit plates are all extended vertically upward to be connected to the end of the packaging bag; a guide slide is fixedly provided on the top surface of the limit frame, and a slanted plate for guiding between the limit frame and the bag conveyor frame is extended obliquely downward on the side of the guide slide close to the bag conveyor belt, and the slanted plate is arranged throughout the transverse width direction of the bag conveyor belt; a clearance opening for subsequent bag stretching station to absorb the upper and lower layers of the packaging bag for tensioning is provided on the top of the limit frame away from the bag conveyor belt and in the same position as the limit connecting plate, and at least one group of the clearance openings is arranged and is staggered with the limit plate.

4. A vacuum packaging secondary bagging machine according to claim 1, characterized in that: The double-station bag opening and holding mechanism includes a bag opening component and a bag holding mechanism that slides laterally and is docked at the conveying end of the bag opening component at a double station. The bag opening component includes a bag opening fixing frame and a bag opening bracket that slides longitudinally on the bag opening fixing frame via a bag opening slide rail. An upper bag opening electric cylinder and a lower bag opening air cylinder are vertically arranged opposite to each other in the bag opening bracket. The telescopic ends of the upper bag opening electric cylinder and the lower bag opening cylinder are both provided with bag opening suction cups. A bag opening moving cylinder is fixed on the bag opening fixing frame and is connected to the bag opening bracket via the cylinder to drive longitudinal sliding. The bag holding mechanism includes two groups of bag holding components, each of which includes two bag holding plates that are arranged in parallel to be connected to the two lateral sides of the packaging bag opening. The bag holding plates are fixedly connected at their side ends. The bag supporting crank is rotatably connected to the bag supporting base plate, and the end of the bag supporting crank away from the bag supporting plate is hinged to the piston end of the bag supporting cylinder so as to drive the bag supporting plate to swing in a linkage manner; the bag supporting base plate is provided with a bag clamping cylinder at the side end of the bag supporting plate for connecting the packaging bag to the bag supporting plate; the lower end of the bag supporting base plate is slidably connected to a laterally extended switching slide rail through a plurality of sliding blocks, and the lower end of the bag supporting base plate is also provided with a switching cylinder for driving it to slide laterally to switch the workstation; the bag supporting base plate is provided with a bag detection switch below the bag supporting transfer station, and two groups of recesses for detection by the bag detection switch are correspondingly opened on the bag supporting base plate; a vacuum generator for driving the bag opening suction cup to suck and release is provided on the bag opening bracket.

5. A vacuum packaging secondary bagging machine according to claim 4, characterized in that: The packaging bag pushing mechanism includes a bag pushing component that pushes the material bag on the lifting platform into the packaging bag that is opened by the double-station bag opening and holding mechanism. The bag pushing component includes a longitudinally extending longitudinal frame, on which a longitudinally extending bag pushing slide rail is fixed, and a longitudinal pushing plate is driven by a driving member to slide on the bag pushing slide rail. An L-shaped bag pushing plate is vertically slidably connected to the longitudinal pushing plate, and a reset cylinder that drives the bag pushing plate to slide vertically is arranged on the longitudinal pushing plate. A push member for supporting the material bag and the packaging bag is arranged below the pushing end of the bag pushing component. A bag pushing channel support plate is sent to the workstation of the heat-sealing bag sorting mechanism; a square boosting opening is opened on the upper surface of the bag pushing channel support plate at the pushing end of the bag pushing component, and a boosting plate is arranged in the square boosting opening, and the end of the boosting plate is driven by the boosting cylinder to slide longitudinally to drag the material bag and the packaging bag to the next workstation; the bag supporting component includes a bag supporting plate extending into the packaging bag and supported on both sides of the bag opening, and the top and side of the bag supporting plate close to the bag lifting component are fixedly connected with a bag pushing guide plate for easy guidance, and the bag pushing guide plates are all unfolded outwards to be open.

6. A vacuum packaging secondary bagging machine according to claim 1, characterized in that: The material bag screening mechanism includes a feed conveyor belt, a discharge end of the feed conveyor belt is provided with a lifting platform and a straight conveyor belt for connecting the discharge, and a driving component for controlling the up and down swinging of the straight conveyor belt is provided on the feed conveyor belt; a soft bag detection component is provided on the feed conveyor belt, and the soft bag detection component includes a material clamping plate, and a telescopic top column is provided on the material clamping plate to press the material bag; the lifting platform is arranged above the straight conveyor belt, and the lifting platform is driven to rise and fall by a first cylinder to connect or disengage the feed side of the lifting platform with the discharge end of the feed conveyor belt; the first cylinder is arranged on both end sides of the lifting platform, the double piston rod of the first cylinder is fixedly connected to the lifting platform upward, and the cylinder body of the first cylinder is installed on the external frame; the straight conveyor belt is installed on the conveyor belt frame, and the end side of the conveyor belt frame away from the feed conveyor belt is hinged on the external frame, and the conveyor belt The end side of the frame body close to the feed conveyor belt is driven to swing by the second cylinder serving as a driving component, so as to connect or disengage the feed side of the straight-through conveyor belt with the discharge end of the feed conveyor belt; the piston rod of the second cylinder is hinged on the conveyor belt frame, and the cylinder body of the second cylinder is hinged on the external frame; the feed conveyor belt is arranged for horizontal transmission; the soft package detection component includes a fixed frame body located above the feed conveyor belt, an open clamping cylinder is fixedly connected to the fixed frame body, and the material splint has two pieces and is respectively fixedly connected to the piston rods at both ends of the open clamping cylinder; the material splint has two pieces and is located above the feed conveyor belt, and the two material splints are arranged opposite to each other; the telescopic top column is arranged on one of the material splints, a through hole for the top column is opened on the material splint, and a telescopic cylinder for detection is fixedly connected to the non-clamping surface side of the material, and the top column is fixedly connected to the piston rod of the telescopic cylinder for detection.

7. The vacuum packaging secondary bagging machine according to claim 1, characterized in that: The lifting platform is provided with a material centering mechanism with detection, and an active splint and a driven splint are respectively provided on two opposite sides of the lifting platform in the material conveying direction, and the active splint and the driven splint are driven by the driving component to move together or move apart, and a resistance scale is also connected to the driven splint, and the translation direction of the active splint and the driven splint is perpendicular to the material conveying direction; a mounting plate of the driving component is provided at the bottom of the lifting platform, and a mounting and giving way opening for the active splint and the driven splint is opened on the mounting plate; the driving component includes a transmission belt installed on the bottom surface of the mounting plate, and the transmission direction of the transmission belt is the translation direction of the active splint and the driven splint; on one side of the belt body of the transmission belt A first adapter plate is fixedly connected, and the first adapter plate is fixedly connected to the bottom of the driven splint after passing through the installation clearance opening; a second adapter plate is fixedly connected to the belt body on the other side of the transmission belt, and the second adapter plate is fixedly connected to the bottom of the active splint after passing through the installation clearance opening; a slider and rail moving pair is connected between the active splint and the mounting plate, and between the driven splint and the mounting plate, and the guiding direction of the slider and rail moving pair is the translational direction of the active splint and the driven splint; the driving assembly also includes a cylinder, the cylinder body of the cylinder is fixedly connected to the bottom of the mounting plate, and the piston rod of the cylinder is fixedly connected to the bottom of the active splint; the cylinder body of the resistance ruler is fixedly connected to the bottom of the mounting plate, and the telescopic rod of the resistance ruler is fixedly connected to the bottom of the driven splint.

8. The vacuum packaging secondary bagging machine according to claim 1, characterized in that: The heat-sealing bag sorting mechanism comprises two sets of follower plates which are driven by a motor assembly to move toward or away from each other laterally, and the lower ends of the follower plates are fixedly connected to bag sorting claws, and the bag sorting claws comprise a transverse adjustment plate connected to the follower plate, the lower end of the transverse adjustment plate is connected to a vertical adjustment plate, and the side of the vertical adjustment plate is connected to a longitudinal adjustment plate, and the longitudinal adjustment plate is in an inverted L shape, and the ends of the longitudinal adjustment plate are all chamfered with arcs to top-connect the folded edges on both sides of the center seam of the packaging bag; a centering component is arranged at the heat-sealing output end along the longitudinal conveying direction of the packaging bag; the longitudinal end of the longitudinal adjustment plate, the transverse end of the transverse adjustment plate and the vertically extending vertical adjustment plate are all provided with strip holes which are conducive to adjustment along their extending directions, and are all connected and fixed by bolts; the motor assembly comprises a bag sorting motor, a driving pulley, a driven pulley, a synchronous belt and a fixed frame, and the back side of the fixed frame is fixedly connected with a heat-sealing component. The heat sealing assembly includes a main board connected to a fixed frame, and a linkage assembly on the main board drives the upper heat sealing plate and the lower heat sealing plate to slide vertically close to or away from each other, and the linkage assembly includes a linkage handle laterally symmetrically arranged on the main board, the center of the linkage handle is rotatably connected to the main board, and the inner and outer sides of the linkage handle are respectively hinged with an upper linkage rod and a lower linkage rod, the lower ends of the upper linkage rod are connected to the upper heat sealing plate, and the lower linkage rods are connected to the lower heat sealing plate, and a linkage cylinder is fixedly arranged on the main board between the two linkage handles, and the bottom of the piston end of the linkage cylinder is connected to the upper heat sealing plate; the centering assembly includes a discharging conveyor belt, and the frames on both sides of the discharging conveyor belt are supported by top plates through vertical support rods, and the lower end of the top plate is fixedly connected to an opening clamping cylinder, and the lateral ends of the opening clamping cylinder are connected to clamping plates driven by the piston rod to move toward or away from each other, and the bottom ends of the clamping plates are fixedly connected to a aligning square tube.

9. The vacuum packaging secondary bagging machine according to claim 1, characterized in that: The discharging reversing mechanism includes a discharging output machine, a reversing mechanism is connected to the output end of the discharging output machine, the reversing mechanism includes a flip plate, a power mechanism for driving the flip plate to flip is installed on the end of the flip plate away from the discharging output machine, and a receiving trough is slidably connected on the flip plate corresponding to the conveying direction of the discharging output machine; the reversing mechanism also includes a rotating seat arranged symmetrically on the left and right, and the left and right sides of the end of the flip plate away from the discharging output machine are fixedly connected with rotating shafts that cooperate with the rotating seat on the same side, one of the rotating shafts extends out of the rotating seat and is movably connected to the power mechanism on the extended end; the power mechanism includes a cylinder bracket, a reversing cylinder is hinged on the cylinder bracket, and a reversing swing arm is installed on the end of the rotating shaft extending out of the rotating seat, one end of the reversing swing arm is fixed to the end of the rotating shaft extending out of the rotating seat and is connected with the rotating shaft extending out of the rotating seat The end of the flip plate rotates synchronously, and the other end of the flip swing arm is hinged with the telescopic end of the flip cylinder; the notch of the material receiving trough faces the end on the flip plate that is docked with the discharging output machine, and a rodless cylinder for driving the material receiving trough to slide is installed in the middle of the lower plate surface of the flip plate, and a sliding bracket is slidably connected to the lower plate surface of the flip plate, and the sliding bracket is fixedly connected to the material receiving trough; the sliding bracket includes a connecting plate, and the connecting plate is parallel to the flip plate, and connecting wing plates are arranged on the left and right ends of the connecting plate, and the connecting wing plates are perpendicular to the connecting plate, and sliding guide holes for the connecting wing plates to pass through and slide are arranged on the left and right sides of the material receiving trough on the flip plate, and the slider on the rodless cylinder is fixedly connected to the middle of the connecting plate, and the end of the connecting wing plate passes through the sliding guide hole and is connected to the end on the same side of the material receiving trough.

10. A vacuum packaging secondary bagging machine according to claim 9, characterized in that: The material receiving trough includes a support plate, fixed baffles are arranged on the left and right ends of the support plate, one of the sides of the two fixed baffles is connected by a connecting baffle, the side of the support plate away from the connecting baffle is slidably connected to the upper surface of the flip plate, and the two fixed baffles, the connecting baffle, the support plate and the flip plate form a material receiving space; a buffer mechanism is arranged on the support plate in the material receiving space, and the buffer mechanism includes a buffer bearing plate, a buffer cylinder is installed on the support plate, the movable end of the buffer cylinder is connected to the buffer bearing plate, and an auxiliary spring is arranged between the support plate and the buffer bearing plate on the peripheral side of the buffer cylinder; a plurality of guide holes perpendicular to the surface of the flip plate are arranged on the connecting wing plate, and a plurality of screws matching the guide holes are arranged on the connecting wing plate Nail; a swing bracket is installed on the lower plate surface of the flip plate at one end away from the discharging output machine, and the swing bracket includes a swing base plate, the swing base plate is parallel to the flip plate, and swing wing plates are symmetrically arranged on the left and right sides of the swing base plate, the rotating shaft is fixed to the outer side of the swing wing plate, and the spacing between the connecting plate and the flip plate is smaller than the spacing between the swing base plate and the flip plate; the output port of the discharging output machine is located on the upper side between the rotating seats, and the discharging output machine is a conveyor belt, and guide baffles are arranged on the left and right sides of the conveyor belt, one end of the guide baffle extends out of the conveyor belt output port and extends toward the rotating seat on the same side to form an extended end, and a transition plate docked with the conveyor belt output port is connected between the two extended ends, and the transition plate docks with the flip plate.

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