Full-automatic rotary bag feeding type packaging machine suitable for PE packaging bags

Abstract

The invention discloses a full-automatic rotary bag feeding type packaging machine suitable for PE packaging bags, which comprises a workbench, a bag feeding part, a bag taking part, a rotary bag clamping part, a bag opening part, a weighing and discharging part, a rechecking and weighing part, a punching part, a sealing part and a finished product conveying part, wherein the bag feeding part, the bag taking part and the rotary bag clamping part are arranged on the workbench, and the bag opening part, the weighing and discharging part, the rechecking and weighing part, the punching part, the sealing part and the finished product conveying part are sequentially arranged in the circumferential direction of the rotary bag clamping part. The bag feeding part comprises a bag storage assembly, a bag suction assembly, a bag clamping assembly and a bag conveying assembly, the bag suction assembly and the bag clamping assembly form a bag separating mechanism, and the bag storage assembly is suitable for pushing stacked PE bags to horizontally move and conveying the PE bags to the bag conveying assembly one by one through the bag separating mechanism; and the bag taking part is arranged between the bag conveying assembly and the rotary bag clamping part and is suitable for overturning the PE bags to the rotary bag clamping part, the PE bags are sequentially conveyed to all the parts through the rotary bag clamping part to be packaged and processed, and the PE bags are output through the finished product conveying part. According to the automatic packaging machine, automatic packaging of the PE bags can be achieved, efficient and stable production output is achieved, and the technical blank in the aspect of domestic flexible packaging materials is filled.

Description

Technical Field

[0001] The invention relates to the technical field of automatic packaging, and in particular to a full-automatic rotary bag-feeding packaging machine suitable for PE packaging bags. Background Art

[0002] In today's packaging industry, with the rapid growth of market demand for consumer goods, the automation level of packaging equipment and the diversification of materials are becoming key points of competition in various industries. Especially in the fields of food, daily chemicals, medicine, etc., prefabricated bag packaging has been widely used due to its beautiful appearance, convenience, and saving of packaging materials. However, the rotary bag packaging machines on the existing market are generally used for rigid composite bags, facing the technical bottleneck of insufficient applicability to soft materials, especially when dealing with single-layer PE (polyethylene) bags that are gradually becoming popular under the trend of environmental protection. Compared with traditional multi-layer composite aluminum film bags, PE bags are soft in texture, poor in stiffness, and have a single-layer structure and are not easy to form. Traditional equipment shows significant limitations, making the use of PE bags on automated packaging equipment a major challenge. Summary of the invention

[0003] The purpose of the present invention is to propose a fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags in view of the shortcomings of the prior art. The machine is upgraded and optimized on the basis of the existing structure so that it can realize automatic packaging of PE bags, achieve efficient and stable production output, and fill the technical gap in domestic flexible packaging materials.

[0004] The technical solution to achieve the purpose of the present invention is:

[0005] A fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags comprises a workbench, a bag-loading part, a bag-taking part, a rotary bag-clamping part arranged on the workbench, and a bag-opening part, a weighing and unloading part, a re-inspection and weighing part, a punching part, a sealing part and a finished product conveying part arranged in sequence along the circumference of the rotary bag-clamping part. The bag-loading part comprises a bag-storing component, a bag-sucking component, a bag-clamping component and a bag-feeding component. The bag-sucking component and the bag-clamping component form a bag-splitting mechanism. The bag-storing component is suitable for pushing the stacked PE bags to translate and conveying them one by one to the bag-feeding component by the bag-splitting mechanism. The bag-taking part is arranged between the bag-feeding component and the rotary bag-clamping part and is suitable for flipping the PE bags to the rotary bag-clamping part. The PE bags are sequentially conveyed to various parts through the rotary bag-clamping part for packaging processing and output by the finished product conveying part.

[0006] Furthermore, the bag taking part includes a column vertically fixed on the workbench, a bag taking motor is fixed on one side of the column, and a splint assembly and a first connecting rod assembly are provided on the other side. The splint assembly, the bag taking motor and the column are connected by the first connecting rod assembly, and the bag taking motor drives the splint assembly to perform a flipping motion via the first connecting rod assembly.

[0007] Furthermore, a first connecting rod is vertically hinged at the upper end of the splint assembly, a connecting column is vertically hinged at the other end of the first connecting rod, the connecting column is vertically fixed on the column, the output end of the bag taking motor passes through the column and is vertically fixed to the second connecting rod, the other end of the second connecting rod is vertically fixed to the third connecting rod, the other end of the third connecting rod is vertically rotationally connected to the middle part of the splint assembly, the first connecting rod, the connecting column, the second connecting rod and the third connecting rod constitute a first connecting rod assembly.

[0008] Furthermore, the splint assembly includes a mounting block connected to the first connecting rod assembly, and the mounting block is provided with a splint cylinder and a pair of splints arranged opposite to each other up and down, one of which is fixed on the mounting block, and the other splint is hinged on the mounting block and movably connected to the piston rod of the splint cylinder.

[0009] Furthermore, the bag opening part includes an air blowing nozzle and a bag opening component and a multi-bag detection component distributed up and down, the bag opening component is provided with a pair of first pneumatic suction nozzles that can be opened and closed synchronously, and the multi-bag detection component is provided with two pairs of second pneumatic suction nozzles that can be opened and closed synchronously and are symmetrically arranged on both sides of the first pneumatic suction nozzle, and the air blowing nozzle is arranged vertically downward and directly between the two first pneumatic suction nozzles.

[0010] Furthermore, the bag opening assembly includes a hollow column fixed on the workbench, a mounting seat is fixed on the top of the hollow column, a push rod is provided in the internal gap, one side of the mounting seat is rotatably connected to two first brackets, and the other side is provided with a second connecting rod assembly, the first pneumatic suction nozzle is installed on the corresponding first bracket, the upper end of the push rod is connected to the two first brackets through the second connecting rod assembly, and the lower end is fixedly connected to the piston rod of a fixed lifting cylinder.

[0011] Furthermore, the multi-bag detection assembly includes a double-headed cylinder fixedly mounted on a workbench, piston rods at both ends of the double-headed cylinder are respectively fixedly connected to second brackets, and the second pneumatic suction nozzle is installed on the corresponding second bracket.

[0012] Furthermore, the weighing and unloading part includes a buffer bucket, a weighing bucket and a drop bucket which are arranged in sequence from top to bottom, the bottom of the buffer bucket is provided with double discharge ports, and each discharge port is provided with a first material door that can be opened and closed, the bottom of the weighing bucket is provided with a second material door that can be opened and closed, and the side of the drop bucket is provided with a fixed drop cylinder, and the drop bucket is fixedly connected to the piston rod of the drop cylinder.

[0013] Furthermore, first material opening cylinders are symmetrically provided on both sides of the cache bucket, and rotating shafts are provided through the two material outlets of the double discharge port. The first material door is fixed on the corresponding rotating shaft, and a fourth connecting rod is vertically fixed on the rotating shaft. The other end of the fourth connecting rod is hinged to the piston rod of the corresponding first material opening cylinder.

[0014] Furthermore, a second material opening cylinder is installed on the weighing bucket, and the second material door is hinged at the bottom of the weighing bucket and is hinged to the piston rod of the second material opening cylinder.

[0015] Furthermore, the re-inspection weighing part includes a third bracket fixedly mounted on the workbench, a weighing sensor is provided on the top of the third bracket, a base is fixed on the weighing sensor, a pair of pneumatic clamps are fixedly mounted on the top of the base, a first lifting cylinder is fixedly mounted on the bottom, and a piston rod of the first lifting cylinder is fixedly connected to a bag supporting frame located below the pneumatic clamps.

[0016] Furthermore, the punching part includes a feed roller with an arc-shaped structure and a punching cylinder fixed on both sides of the feed roller, the feed roller extends to the finished product conveying part, and the piston rods of the punching cylinders are relatively arranged and fixedly connected to the punching plate.

[0017] Furthermore, the sealing part includes a heat sealing part and a cold sealing part which are arranged in sequence, the heat sealing part includes a fourth bracket and a fifth bracket which are vertically fixed on the workbench, the top of the fourth bracket is provided with an opening and closing heat sealing machine, the bottom of the heat sealing machine is provided with an exhaust cylinder, the piston rod of the exhaust cylinder is horizontally arranged and fixed with a first exhaust plate, and the fifth bracket is fixed with a second exhaust plate corresponding to the first exhaust plate.

[0018] Furthermore, the cold sealing part is installed at the entrance of the finished product conveying part.

[0019] Furthermore, the upper bag part includes a frame fixedly mounted on the workbench, and the bag storage assembly includes a first support frame fixedly mounted on the frame, a first table plate is fixedly mounted on the top of the first support frame, and a plurality of limit rods movably arranged in a horizontal direction are provided at the bottom, a first slide groove corresponding to the limit rod is opened on the first table plate, and a plurality of the limit rods vertically penetrate the first slide groove to form a bag pushing plane.

[0020] Furthermore, the bottom of the first support frame is fixed with first guide rods arranged in parallel, a connecting rod is slidably provided between the two first guide rods, the limit rod is vertically fixed on the connecting rod, and a first cylinder is fixed at one end of the first support frame, and the piston rod of the first cylinder is horizontally arranged and vertically fixed to the connecting rod.

[0021] Furthermore, a first positioning plate is provided on any side of the first platform that is perpendicular to the bag pushing plane, and a second positioning plate is provided on a side of the first platform that is close to the bag feeding assembly.

[0022] Furthermore, the bag suction assembly includes a second lifting cylinder fixedly mounted on the top of the frame, a piston rod of the second lifting cylinder is vertically arranged downward and fixedly connected to a fixing plate, and a plurality of pneumatic suction cups are evenly arranged on the fixing plate along the length direction.

[0023] Furthermore, the bag clamping assembly includes a slide cylinder and a second guide rod fixedly mounted on the top of the frame and arranged in parallel, a moving block fixedly connected to the sliding block of the slide cylinder is slidably mounted on the second guide rod, a cross bar is fixedly mounted on the moving block, pneumatic chucks are symmetrically provided at both ends of the cross bar, the pneumatic chucks are provided with relatively arranged jaws to form a clamping opening, and the inner sides of the jaws are coated with a flexible material coating.

[0024] Furthermore, the bag feeding assembly includes a fixedly arranged second platform, the upper surface of which is provided with a bag bin with adjustable spacing, and the lower surface of which is respectively fixedly and rotatably provided with a bag feeding motor and a bag feeding roller, the bag feeding roller extends to the bag feeding bin and is coaxially fixedly connected to the output shaft of the bag feeding motor.

[0025] Furthermore, the bag delivery assembly also includes a second support plate fixedly installed in the middle of the frame, the second platform is fixedly installed on the top of the second support plate, the second platform is provided with a plurality of parallel second slide grooves, and the second slide grooves are provided with limit columns with adjustable spacing to form a bag bin.

[0026] Furthermore, the top of the limiting column expands outward to form a bell mouth.

[0027] Furthermore, a forward and reverse adjustment screw rod installed on the second support plate is provided under the second platform, and a third guide rod is provided in parallel on both sides of the forward and reverse adjustment screw rod, and the forward threaded area and reverse threaded area of ​​the forward and reverse adjustment screw rod are respectively threadedly connected to a mounting plate that slides with the third guide rod, and a second cylinder is fixedly mounted on the mounting plate, and a piston rod of the second cylinder passes through the mounting plate and is fixedly connected to a first connecting plate that is arranged parallel to the mounting plate, and the limit column is vertically fixed on the first connecting plate.

[0028] Furthermore, it also includes a lifting and clamping assembly, which includes a clamping cylinder fixedly mounted on the top of the frame, the clamping cylinder is located above the bag feeding roller and the piston rod is vertically arranged downward and fixedly connected to a second connecting plate, the second connecting plate is horizontally arranged and has clamping wheels rotatably provided at both ends.

[0029] Furthermore, it also includes a lifting bag blocking assembly, which includes a bag blocking cylinder fixedly mounted on a frame and located at the outlet of the bag feeding assembly, and a piston rod of the bag blocking cylinder is vertically arranged upward and fixedly connected to a bag blocking plate.

[0030] By adopting the above technical solution, the present invention has the following beneficial effects:

[0031] (1) The present invention continues to use the existing rotary bag-feeding packaging machine, and designs a new structure of the upper bag part according to the special material of the PE packaging bag. The stacked PE bags are translated by the bag storage component, and then the PE bags are sent one by one to the bag delivery component by the bag separation mechanism composed of the bag suction component and the bag clamping component. The PE bags are then sent to the rotary bag clamping component for rotary bag-feeding packaging production by the bag picking component in a flipping manner, which effectively shortens the conveying path of the PE bags. In the conveying process, the PE bags with softened and easily deformed materials are sorted out in different state change processes through the translation of the bag storage component, the adsorption of the bag suction component, the clamping of the entrainment component, the translation of the bag delivery component and the flipping of the bag picking component, so that the PE bags with softened materials and easily deformed are sorted out in different state change processes, ensuring that the PE bags finally delivered to the rotary bag clamping component are flat. At the same time, due to the state change of the PE bags during the conveying process, the sensor can accurately sense the position of the PE bags, thereby solving the problem that the single conveying method cannot accurately obtain position information and ensure position accuracy due to the easy deformation of the PE bags, thus laying a foundation for automatic packaging.

[0032] (2) The bag taking part of the present invention drives the first connecting rod assembly through a motor and then drives the clamping plate assembly to achieve flipping, the structure is simple and the flipping action is reliable.

[0033] (3) The present invention uses a bag opening part to open a PE bag made of a relatively soft material through an air blowing nozzle, thereby effectively solving the problem that the PE bag cannot be opened according to its own rigidity. At the same time, a bag opening component and a multi-bag detection component are provided, and two pairs of vacuum suction cups of the multi-bag detection component are used for detection, thereby effectively avoiding multiple PE bags to be opened, ensuring that there is only one PE bag, and improving the success rate of bag opening.

[0034] (4) The present invention controls the discharge speed by providing a buffer bucket with dual discharge ports, and is used in conjunction with a weighing bucket to control the number of discharge ports opened and the size of the discharge ports opened by the buffer bucket through the weighing signal of the weighing bucket, thereby improving the packaging efficiency while ensuring the packaging weight accuracy.

[0035] (5) The re-inspection weighing part of the present invention installs the bag support frame and the pneumatic clamp on the weighing sensor, so that they jointly bear the weight of the PE bag and the filling material, avoiding the PE bag from deforming under the load. At the same time, the bag support frame can be raised and lowered. When the re-inspection weight is unqualified, it can be directly lowered and rejected, avoiding the unqualified products from flowing into the next process for sealing, saving rework costs.

[0036] (6) The punching part of the present invention pushes two punching plates toward each other through two punching cylinders, thereby punching holes in the filled PE bag to facilitate subsequent exhaust and sealing.

[0037] (7) The present invention optimizes the traditional single seal into a sealing part that combines heat and cold sealing according to the special material of the PE bag, thereby ensuring a tight seal and improving the aesthetics of the seal.

[0038] (8) The present invention sets up the cold sealing part at the entrance of the finished product conveying part, shortening the conveying line of the finished product and improving the packaging efficiency.

[0039] (9) The present invention uses a movable limiting rod to push the PE bags stacked on the first platen to move, so that multiple PE bags can be transported at the same time, and the limiting rod can prevent the PE bags from sliding backward due to inertia.

[0040] (10) The present invention meets the bag delivery requirements of PE bags of more specifications by providing a belt conveyor with adjustable spacing, and has better versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0042] Figure 1 A perspective view of the present invention;

[0043] Figure 2 It is a structural schematic diagram of the present invention;

[0044] Figure 3 It is a schematic diagram of the overall structure of the upper bag part of the present invention;

[0045] Figure 4 It is a structural schematic diagram of the bag storage assembly of the present invention;

[0046] Figure 5 It is a partial structural schematic diagram of the bag clamping assembly of the present invention;

[0047] Figure 6 It is a structural schematic diagram of the bag delivery assembly of the present invention;

[0048] Figure 7 It is a structural schematic diagram of the bag taking part of the present invention;

[0049] Figure 8 It is a structural schematic diagram of the bag opening part of the present invention;

[0050] Fig. 9 It is an enlarged view of the local structure of the bag opening part of the present invention;

[0051] Fig.10 It is a structural schematic diagram of the weighing and unloading part of the present invention;

[0052] Fig.11 It is a structural schematic diagram of the re-inspection weighing unit of the present invention;

[0053] Fig.12 It is a schematic structural diagram of the heat-sealed portion of the present invention.

[0054] The reference numerals in the accompanying drawings are:

[0055] Workbench 1;

[0056] Upper bag part 2, frame 2-1, first support frame 2-2, first platform 2-3, first slide 2-3-1, limit rod 2-4, first guide rod 2-5, connecting rod 2-6, first cylinder 2-7, first positioning plate 2-8, second positioning plate 2-9, second lifting cylinder 2-10, fixed plate 2-11, pneumatic suction cup 2-12, slide cylinder 2-13, second guide rod 2-14, moving block 2-15, cross bar 2-16, pneumatic clamp Head 2-17, second support plate 2-18, second table 2-19, second slide 2-19-1, limit column 2-20, positive and negative adjustment screw 2-21, third guide rod 2-22, mounting plate 2-23, second cylinder 2-24, first connecting plate 2-25, bag feeding roller 2-26, bag feeding motor 2-27, clamping cylinder 2-28, second connecting plate 2-29, clamping wheel 2-30, bag blocking cylinder 2-31, bag blocking plate 2-32;

[0057] Bag taking part 3, column 3-1, bag taking motor 3-2, clamping plate assembly 3-3, mounting block 3-3-1, clamping plate cylinder 3-3-2, clamping plate 3-3-3, first connecting rod 3-4, connecting column 3-5, second connecting rod 3-6, third connecting rod 3-7, limit block 3-8;

[0058] Rotating bag clamping part 4;

[0059] Bag opening part 5, blowing nozzle 5-1, hollow column 5-2, mounting seat 5-3, push rod 5-4, first bracket 5-5, second connecting rod assembly 5-6, first pneumatic suction nozzle 5-7, lifting cylinder 5-8, double-head cylinder 5-9, second bracket 5-10, second pneumatic suction nozzle 5-11;

[0060] Weighing and unloading part 6, buffer bucket 6-1, weighing bucket 6-2, unloading bucket 6-3, first material door 6-4, second material door 6-5, first material opening cylinder 6-6, rotating shaft 6-7, fourth connecting rod 6-8, second material opening cylinder 6-9, unloading cylinder 6-10;

[0061] Re-inspection weighing unit 7, third bracket 7-1, weighing sensor 7-2, base 7-3, pneumatic clamp 7-4, first lifting cylinder 7-5, bag support frame 7-6;

[0062] Punching part 8, feeding roller 8-1, punching cylinder 8-2, punching plate 8-3;

[0063] Sealing part 9, fourth bracket 9-1, fifth bracket 9-2, heat sealer 9-3, exhaust cylinder 9-4, first exhaust plate 9-5, second exhaust plate 9-6;

[0064] Finished product conveying unit 10. DETAILED DESCRIPTION

[0065] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0066] (Example 1)

[0067] like Figures 1 to 12 The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags shown in the figure comprises a workbench 1, a bag-loading part 2, a bag-taking part 3, a rotary bag-clamping part 4 arranged on the workbench 1, and a bag-opening part 5, a weighing and unloading part 6, a re-inspection and weighing part 7, a punching part 8, a sealing part 9 and a finished product conveying part 10 arranged in sequence along the circumference of the rotary bag-clamping part 4. The bag-loading part 2 comprises a bag-storing assembly, a bag-sucking assembly, a bag-clamping assembly and a bag-feeding assembly. The bag-sucking assembly and the bag-clamping assembly form a bag-splitting mechanism. The stacked PE bags are pushed to translate by the bag-storing assembly and are delivered to the bag-feeding assembly one by one by the bag-splitting mechanism. The bag-taking part 3 is arranged between the bag-feeding assembly and the rotary bag-clamping part 4 to realize flipping the PE bag to the rotary bag-clamping part 4. The PE bag is then sequentially conveyed to each part for packaging processing by the rotary bag-clamping part 4 and output by the finished product conveying part 10.

[0068] Specifically, the bag-loading part 2 includes a frame 2-1 fixedly mounted on the workbench 1, and the bag storage assembly includes a first support frame 2-2 fixedly mounted on the frame 2-1. A first platform 2-3 is fixedly mounted on the top of the first support frame 2-2. Three first slide grooves 2-3-1 are provided on the first platform 2-3. A vertically arranged limit rod 2-4 is inserted into each first slide groove 2-3-1 to form a bag-pushing plane. Parallel first guide rods 2-5 are fixedly mounted on the bottom of the first support frame 2-2. A connecting rod 2-6 is slidably arranged between the two first guide rods 2-5. The limit rod 2-4 is vertically fixedly mounted on the connecting rod 2-6. A first cylinder 2-7 is fixedly mounted on one end of the first support frame 2-2. The piston rod of the first cylinder 2-7 is horizontally arranged and vertically connected to the connecting rod 2-6. The first cylinder 2-7 drives the limit rod 2-4 to push the PE bags stacked on the first platen 2-3 to move, which can not only transport multiple PE bags at the same time, but also prevent the PE bags from sliding backwards due to inertia through the limit rod 2-4. A first positioning plate 2-8 is provided on any side of the first platen 2-3 that is perpendicular to the bag pushing plane, and a second positioning plate 2-9 is provided on the side of the first platen 2-3 close to the bag delivery assembly. By providing the first positioning plate 2-8 as a reference surface, it is ensured that the front and rear sides of the PE bags stacked on the platen remain flush, and then under the push of the limit rod and the action of the second positioning plate 2-9, the left and right sides of the PE bags are kept flush, thereby ensuring the position accuracy of the PE bag delivery.

[0069] The bag suction assembly includes a second lifting cylinder 2-10 fixedly mounted on the top of the frame 2-1. The piston rod of the second lifting cylinder 2-10 is vertically arranged downward and fixedly connected to a fixed plate 2-11. The fixed plate 2-11 is evenly provided with a plurality of pneumatic suction cups 2-12 along the length direction.

[0070] The bag clamping assembly includes a slide cylinder 2-13 and a second guide rod 2-14 which are fixedly mounted on the top of the frame 2-1 and arranged in parallel. A moving block 2-15 which is fixedly mounted on the second guide rod 2-14 and is connected to the sliding block of the slide cylinder 2-13 is slidably mounted. A cross bar 2-16 is fixedly mounted on the moving block 2-15. Pneumatic chucks 2-17 are symmetrically arranged at both ends of the cross bar 2-16. The pneumatic chuck 2-17 is provided with relatively arranged jaws to form a clamping opening. The inner side of the jaws is coated with a flexible material coating to provide further protection to prevent the jaws from clamping the PE bag.

[0071] The bag feeding assembly includes a second support plate 2-18 fixedly mounted in the middle of the frame 2-1, a second platform 2-19 is fixedly mounted on the top of the second support plate 2-18, a plurality of second slide grooves 2-19-1 arranged in parallel are provided on the second platform 2-19, and the second slide grooves 2-19-1 are provided with limit columns 2-20 with adjustable spacing to form a bag bin, thereby meeting the bagging needs of PE bags of more specifications and having better versatility. Specifically, a forward and reverse adjustment screw rod 2-21 mounted on the second support plate 2-18 is provided below the second platform 2-19, and a third guide rod 2-22 is provided in parallel on both sides of the forward and reverse adjustment screw rod 2-21. The forward threaded area and the reverse threaded area of ​​the forward and reverse adjustment screw rod 2-21 are respectively threadedly connected with a mounting plate 2-23 that slides with the third guide rod 2-22. A second cylinder 2-24 is fixedly installed on the mounting plate 2-23. The piston rod of the second cylinder 2-24 passes through the mounting plate 2-23 and is fixedly connected with a first connecting plate 2-25 that is arranged parallel to the mounting plate 2-23. The limiting column 2-20 is vertically fixed on the first connecting plate 2-25. The original spacing of the limiting column 2-20 can be quickly adjusted by the forward and reverse adjustment screw rod 2-21, and the spacing of the limiting column 2-20 can be adjusted twice by the cylinder, which has a wider range of applications. The top of the limiting column 2-20 expands outward to form a bell mouth, which is more convenient for the placement of PE bags.

[0072] A through slot 2-19-2 is provided near the outlet of the bag feeding assembly of the second platform 2-19, and a bag feeding roller 2-26 is rotatably mounted on the second support plate 2-18. The bag feeding roller 2-22 is located at the through slot 2-19-2, and the top is slightly higher than the second platform 2-19. A bag feeding motor 2-27 is fixedly mounted at one end of the second support plate 2-18, and the output shaft of the bag feeding motor 2-27 is coaxially fixedly connected with the bag feeding roller 2-22, thereby driving it to rotate and realizing the conveying of PE bags.

[0073] In order to prevent the PE bags from shifting during transportation, the present embodiment is also provided with a lifting and clamping assembly, which includes a clamping cylinder 2-28 fixedly mounted on the top of the frame 2-1, the clamping cylinder 2-28 is located above the bag feeding roller 2-22 and the piston rod is vertically downwardly arranged and fixedly connected to a second connecting plate 2-29, the second connecting plate 2-29 is horizontally arranged and has clamping wheels 2-30 rotatably provided at both ends, and the bag body is clamped by the clamping wheels 2-30 to prevent displacement.

[0074] In order to improve the conveying position accuracy, the present embodiment is also provided with a lifting bag blocking assembly, which includes a bag blocking cylinder 2-31 fixedly mounted on the frame 2-1 and located at the outlet of the bag conveying assembly. The piston rod of the bag blocking cylinder 2-31 is vertically arranged upward and fixedly connected to a bag blocking plate 2-32, so that after the PE bag moves to contact with the bag blocking plate 2-32, it stops, realizing automatic positioning, thereby improving the position accuracy of conveying to the next process.

[0075] The bag taking part 3 includes a column 3-1 vertically fixed on the workbench 1, a bag taking motor 3-2 is fixed on one side of the column 3-1, and a splint assembly 3-3 is provided on the other side. The splint assembly 3-3 includes a mounting block 3-3-1, a splint cylinder 3-3-2 and a pair of splints 3-3-3 arranged opposite to each other up and down are provided on the mounting block 3-3-1, one of the splints 3-3-3 is fixed on the mounting block 3-3-1, and the other splint is hinged on the mounting block 3-3-1 and is movably connected to the piston rod of the splint cylinder 3-3-2. The upper end of the mounting block 3-3-1 is vertically hinged with a first connecting rod 3-4, the other end of the first connecting rod 3-4 is vertically hinged with a connecting column 3-5, the connecting column 3-5 is vertically fixed on the column 3-1, the output end of the bag taking motor 3-2 passes through the column 3-1 and is vertically fixed with a second connecting rod 3-6, the other end of the second connecting rod 3-6 is vertically fixed with a third connecting rod 3-7, the other end of the third connecting rod 3-7 is vertically connected to the middle of the mounting block 3-3-1, the first connecting rod 3-4, the connecting column 3-5, the second connecting rod 3-6 and the third connecting rod 3-7 form a first connecting rod assembly. The bag taking motor 3-2 drives the clamping plate assembly 3-3 to move through a part of the structure of the first connecting rod assembly, and the clamping plate assembly 3-3 finally realizes the flipping motion under the linkage of another part of the structure of the first connecting rod assembly. In order to improve the stability of the flipping movement, limit blocks 3-8 fixed on the column 3-1 are provided on both sides of the rotation direction of the second connecting rod 3-6, and a position sensor is installed at the end of the second connecting rod 3-6.

[0076] The rotating bag clamping part 4 is an existing structure, located in the central area of ​​the workbench 1, and the central rotating shaft is connected with a cam transmission component to realize the drive connection transmission. The top disc is divided into eight equal parts according to the circumference, and each equal part is provided with a station, which respectively corresponds to the bag taking part 3, the vacant station, the bag opening part 5, the weighing and unloading part 6, the re-inspection weighing part 7, the punching part 8, the sealing part 9 and the finished product conveying part 10. And a set of bag clamping claws are installed on each station to clamp the PE bag for turnover.

[0077] The bag opening part 5 includes a blowing nozzle 5-1 and a bag opening assembly and a multi-bag detection assembly distributed up and down. The bag opening assembly includes a hollow column 5-2 fixedly mounted on the workbench 1. A mounting seat 5-3 is fixedly mounted on the top of the hollow column 5-2. A push rod 5-4 is provided in the internal gap. Two first brackets 5-5 are rotatably connected on one side of the mounting seat 5-3, and a second connecting rod assembly 5-6 is provided on the other side. A first pneumatic suction nozzle 5-7 is installed on each first bracket 5-5. The blowing nozzle 5-1 is vertically arranged downward and directly facing between the two first pneumatic suction nozzles. The upper end of the push rod 5-4 is connected to the two first brackets 5-5 through the second connecting rod assembly 5-6, and the lower end is fixedly connected to the piston rod of the fixed lifting cylinder 5-8. The action of the lifting cylinder 5-8 drives the push rod 5-4 to push the second connecting rod assembly 5-6 to move, thereby driving the two first brackets 5-5 to move closer and farther, thereby realizing bag opening. The multi-bag detection component includes a double-headed cylinder 5-9 fixedly mounted on the workbench 1, and the piston rods at both ends of the double-headed cylinder 5-9 are respectively fixedly connected to the second bracket 5-10, and the two ends of each second bracket 5-10 are fixedly connected to the second pneumatic suction nozzle 5-11, so that bag opening points are formed at both ends on the left and right sides of the lower part of the PE bag. The blowing nozzle opens the PE bag with a softer material, which effectively solves the problem that the PE bag cannot be opened according to its own rigidity. At the same time, a bag opening component and a multi-bag detection component are set, and two pairs of vacuum suction cups of the multi-bag detection component are used for detection, which effectively avoids multiple PE bags to be opened, ensures that there is only one PE bag, and improves the success rate of bag opening.

[0078] The weighing and unloading part 6 includes a buffer bucket 6-1, a weighing bucket 6-2 and a drop bucket 6-3 which are arranged in sequence from top to bottom. The bottom of the buffer bucket 6-1 is provided with double discharge ports, and each discharge port is provided with a first material door 6-4 which can be opened and closed. The bottom of the weighing bucket 6-2 is provided with a second material door 6-5 which can be opened and closed. The drop speed of the buffer bucket 6-1 is controlled by opening and closing the first material door 6-4, so as to improve the filling efficiency while ensuring the filling accuracy. Specifically, the first material opening cylinder 6-6 is symmetrically arranged on both sides of the buffer bucket 6-1, and the two discharge ports of the double discharge ports are penetrated by a rotating shaft 6-7 which is rotatably arranged. The first material door 6-4 is fixedly mounted on the corresponding rotating shaft 6-7, and a fourth connecting rod 6-8 is vertically fixedly mounted on the rotating shaft 6-7. The other end of the fourth connecting rod 6-8 is hinged with the piston rod of the corresponding first material opening cylinder 6-6, so as to realize the opening and closing of the first material door 6-4 through the rotating shaft 6-7. The weighing hopper 6-2 is equipped with a second opening cylinder 6-9, and the second material door 6-5 is hinged at the bottom of the weighing hopper 6-2 and is hinged with the piston rod of the second opening cylinder 6-9. When the weight of the material in the weighing hopper 6-2 reaches the set value, the second opening cylinder 6-9 drives the second material door 6-5 to open automatically, and the material falls into the drop hopper 6-3 below. A fixed drop cylinder 6-10 is provided on the side of the drop hopper 6-3. The drop hopper 6-3 is fixedly connected to the piston rod of the drop cylinder 6-10. The drop hopper 6-3 is driven down by the drop cylinder 6-10 and inserted into the PE bag transmitted from below to complete the accurate filling of the material and avoid leakage.

[0079] The re-inspection weighing unit 7 includes a third bracket 7-1 fixed on the workbench 1, a weighing sensor 7-2 is provided on the top of the third bracket 7-1, a base 7-3 is fixed on the weighing sensor 7-2, a pair of pneumatic clamps 7-4 are fixed on the top of the base 7-3, a first lifting cylinder 7-5 is fixed on the bottom, and the piston rod of the first lifting cylinder 7-5 is fixedly connected to a bag support frame 7-6 located below the pneumatic clamp 7-4. By installing the bag support frame 7-6 and the pneumatic clamp 7-4 on the weighing sensor 7-2, the weight of the PE bag and the filling material is jointly borne to avoid the deformation of the PE bag under load. At the same time, the bag support frame 7-6 can be raised and lowered. When the re-inspection weight is unqualified, it can be directly lowered to complete the removal of unqualified products, so as to avoid unqualified products flowing into the next process for sealing, thereby saving rework costs.

[0080] The punching section 8 includes an arc-shaped feeding roller 8-1 and a punching cylinder 8-2 fixedly mounted on both sides of the feeding roller 8-1. The feeding roller 8-1 extends to the finished product conveying section 10. The piston rods of the punching cylinders 8-2 are relatively arranged and fixedly connected with a punching plate 8-3. The two punching cylinders 8-2 push the two punching plates 8-3 closer to each other, thereby punching the filled PE bag to facilitate subsequent exhaust and sealing.

[0081] The sealing part 9 includes a heat sealing part and a cold sealing part which are arranged in sequence. The heat sealing part includes a fourth bracket 9-1 and a fifth bracket 9-2 which are vertically fixed on the workbench 1. The top of the fourth bracket 9-1 is provided with an opening and closing heat sealer 9-3. The bottom of the heat sealer 9-3 is provided with an exhaust cylinder 9-4. The piston rod of the exhaust cylinder 9-4 is horizontally arranged and fixed with a first exhaust plate 9-5. The fifth bracket 9-2 is fixed with a second exhaust plate 9-6 corresponding to the first exhaust plate 9-5. The structure of the cold sealing part is similar to that of the heat sealing part, which will not be repeated here. In view of the special material of the PE bag, the traditional single seal is optimized into a sealing part which combines heat and cold, which not only ensures the tightness of the seal, but also improves the aesthetics of the seal. In addition, in order to shorten the conveying line of the finished product, the cold sealing part is set at the entrance of the finished product conveying part 10 in this embodiment to improve the packaging efficiency.

[0082] The present embodiment continues to use the existing rotary bag-feeding packaging machine. Aiming at the special material of PE packaging bags, a new structure of the upper bag part 2 is designed. The stacked PE bags are translated by the bag storage component, and then the PE bags are sent to the bag delivery component one by one by the bag separation mechanism composed of the bag suction component and the bag clamping component. The PE bags are sent to the rotary bag clamping part for rotary bag-feeding packaging production by the bag taking part in a flipping manner, which effectively shortens the conveying path of the PE bags. In the conveying process, the PE bags with softened and easily deformed materials are sorted out in different state change processes through the translation of the bag storage component, the adsorption of the bag suction component, the clamping of the entrainment component, the translation of the bag delivery component and the flipping of the bag taking part 3, so that the PE bags with softened materials and easily deformed are sorted out in different state change processes, ensuring that the PE bags finally delivered to the rotary bag clamping part are flat. At the same time, due to the state change of the PE bags during the conveying process, the sensor can accurately sense the position of the PE bags, thereby solving the problem that the single conveying method cannot accurately obtain position information to ensure position accuracy due to the easy deformation of the PE bags, laying the foundation for automated packaging.

[0083] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags, characterized by: It includes a workbench, a bag loading part, a bag taking part, a rotating bag clamping part arranged on the workbench, and a bag opening part, a weighing and unloading part, a re-inspection and weighing part, a punching part, a sealing part and a finished product conveying part arranged in sequence along the circumference of the rotating bag clamping part. The bag loading part includes a bag storing component, a bag suction component, a bag clamping component and a bag feeding component. The bag suction component and the bag clamping component form a bag separating mechanism. The bag storing component is suitable for pushing the stacked PE bags to translate and conveying them to the bag feeding component one by one by the bag separating mechanism. The bag taking part is arranged between the bag feeding component and the rotating bag clamping part and is suitable for flipping the PE bags to the rotating bag clamping part. The PE bags are sequentially conveyed to various parts through the rotating bag clamping part for packaging and processing and output by the finished product conveying part.

2. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The bag taking part includes a column vertically fixed on the workbench, a bag taking motor is fixed on one side of the column, and a clamping plate assembly and a first connecting rod assembly are provided on the other side. The clamping plate assembly, the bag taking motor and the column are connected by the first connecting rod assembly, and the bag taking motor drives the clamping plate assembly to perform a flipping motion via the first connecting rod assembly.

3. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The bag opening part includes an air blowing nozzle and a bag opening component and a multi-bag detection component distributed up and down. The bag opening component is provided with a pair of first pneumatic suction nozzles that can be opened and closed synchronously. The multi-bag detection component is provided with two pairs of second pneumatic suction nozzles that can be opened and closed synchronously and are symmetrically arranged on both sides of the first pneumatic suction nozzle. The air blowing nozzle is arranged vertically downward and directly facing between the two first pneumatic suction nozzles.

4. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The weighing and unloading part includes a buffer bucket, a weighing bucket and a drop bucket which are arranged in sequence from top to bottom. The bottom of the buffer bucket is provided with double discharge ports, and each discharge port is provided with a first material door that can be opened and closed. The bottom of the weighing bucket is provided with a second material door that can be opened and closed. A fixed drop cylinder is provided on the side of the drop hopper, and the drop hopper is fixedly connected to the piston rod of the drop cylinder.

5. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The re-inspection weighing part includes a third bracket fixedly mounted on the workbench, a weighing sensor is provided on the top of the third bracket, a base is fixed on the weighing sensor, a pair of pneumatic clamps are fixedly mounted on the top of the base, a first lifting cylinder is fixedly mounted on the bottom, and a piston rod of the first lifting cylinder is fixedly connected to a bag supporting frame located below the pneumatic clamps.

6. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The punching part includes a feed roller with an arc structure and a punching cylinder fixed on both sides of the feed roller, the feed roller extends to the finished product conveying part, and the piston rods of the punching cylinders are relatively arranged and fixedly connected with a punching plate.

7. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The sealing part includes a heat sealing part and a cold sealing part which are arranged in sequence, the heat sealing part includes a fourth bracket and a fifth bracket which are vertically fixed on the workbench, an opening and closing heat sealing machine is arranged on the top of the fourth bracket, an exhaust cylinder is arranged on the bottom of the heat sealing machine, a piston rod of the exhaust cylinder is horizontally arranged and fixedly provided with a first exhaust plate, and a second exhaust plate corresponding to the first exhaust plate is fixedly provided on the fifth bracket.

8. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 8, characterized in that: The cold sealing part is arranged at the entrance of the finished product conveying part.

9. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The bag storage assembly includes a fixed first support frame, a first platform is fixedly installed on the top of the first support frame, and a plurality of limit rods movably arranged in the horizontal direction are provided at the bottom. A first slide groove corresponding to the limit rod is opened on the first platform, and the plurality of limit rods vertically penetrate the first slide groove to form a bag pushing plane.

10. The fully automatic rotary bag-feeding packaging machine suitable for PE packaging bags according to claim 1, characterized in that: The bag feeding assembly includes a fixed second platen, the upper surface of which is provided with a bag bin with adjustable spacing, and the lower surface is respectively fixedly and rotatably provided with a bag feeding motor and a bag feeding roller, the bag feeding roller extends to the bag feeding bin and is coaxially fixedly connected to the output shaft of the bag feeding motor.

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