Steel cylinder packaging machine and unpacking and bottling method

Abstract

The present invention discloses a steel cylinder packaging machine and a method for unpacking and bottling, comprising a frame, on which a carton loading device, a carton bottom sealing device, a carton turning device and a carton top sealing device are provided. The carton turning device comprises a first guide rod, a carton baffle and a first conveyor belt. The input end of the first conveyor belt is connected to the output end of the first material channel in the carton bottom sealing device, and the first conveyor belt is lower than the first material channel. The first guide rod is arranged in the middle of the output end of the first material channel, biased to one side of the top of the carton, and the first guide rod extends above the first conveyor belt. When the carton is conveyed from the first material channel to the top of the first conveyor belt, the first guide rod is supported on the side below the carton close to the top and the bottom side of the carton is suspended, so that the bottom of the carton falls upright downward on the first conveyor belt. The carton turning device of the patent turns the carton over, and connects the carton bottom sealing device and the carton top sealing device to form a complete packaging line, which has higher packaging efficiency.

Description

Technical Field

[0001] The present invention relates to a steel cylinder packaging device, in particular to a steel cylinder packaging machine and a method for unpacking and bottling a steel cylinder. Background Art

[0002] Steel cylinders, used for storing, transporting, and using high- and low-pressure liquefied gases, primarily consist of a cylinder body and handles. After production, the cylinders need to be individually packaged in boxes. The packaging for steel cylinders involves unpacking the box panels, folding the bottom cover, taping the bottom of the box, packing the cylinders, sealing the top cover with folds, and folding the top cover ears inward.

[0003] For example, patent CN217865049U discloses a horizontal high-speed carton opening machine, which includes a chassis, a box storage mechanism, a carton opening mechanism, a paper cover bending mechanism, and a bottom sealing mechanism. A conveyor path is provided in the chassis, and the carton opening mechanism includes a height adjustment frame, an upper guide rail provided on the height adjustment frame, a conveyor frame slidably provided on the upper guide rail, and lower guide rails provided on both sides of the conveyor path. A driving assembly is provided in the chassis, and a first suction cup is provided on the conveyor frame. The carton opening mechanism also includes a swing arm provided on the inner side wall of the chassis and a second pushing cylinder, and a second suction cup is provided on the swing arm. The invention discloses an automated structure for opening, forming, folding, and bottom sealing cartons by automatically conveying cartons, thereby realizing carton opening in a sideways posture.

[0004] Another example is a carton sealing machine disclosed in patent CN103818573A, which includes a conveying mechanism, a folding guide, a small folding guide, a first large folding guide, a main guide, a first large folding horizontal retaining member, a large tongue guide, a small tongue folding member, and a small tongue guide. Vertically placed cartons are conveyed by the conveying mechanism, and the folding guide, the small folding guide, the first large folding guide, the main guide, the first large folding horizontal retaining member, the large tongue guide, the small tongue folding member, and the small tongue guide fold the four side covers of the fed cartons inward to a horizontal position for top sealing.

[0005] The workers remove the boxes lying on their side after opening and sealing the bottom from the box opening and sealing machine one by one, then carry the removed boxes to the side of the box filling and sealing machine, and then place the boxes upright one by one on the box filling and sealing machine. As a result, a complete packaging line cannot be formed, which makes the packaging process consume too much manpower and working hours, and increases manufacturing costs. Summary of the Invention

[0006] Based on the problem that the above-mentioned box opening and bottom sealing machine and box filling and top sealing machine are set separately, the intermediate packaging box is turned over manually, and a complete packaging line cannot be formed, the present invention provides a cylinder packaging machine and a box opening and bottling method using the packaging machine.

[0007] The technical solution adopted by the present invention to solve the above technical problems is as follows: a steel bottle packaging machine includes a frame, on which a carton feeding device, a carton opening and bottom sealing device, a carton turning device and a carton filling and top sealing device are provided. The input end and output end of the carton turning device are respectively connected to the output end of the carton opening and bottom sealing device and the input end of the carton filling and top sealing device. The carton feeding device is arranged at the input end of the carton opening and bottom sealing device.

[0008] The carton loading device includes a lifting rack that can be raised and lowered, a driving mechanism 1 for driving the lifting rack to be raised and lowered, a lifting box grabbing suction cup that can be raised and lowered, and a driving mechanism 2 for driving the lifting box grabbing suction cup to be raised and lowered. The sheet-like box boards to be unpacked are stacked horizontally on the lifting rack. The box grabbing suction cup is located above the lifting rack and is used to lift the box boards upward for loading.

[0009] The box opening and bottom sealing device comprises a box opening mechanism, an inner bottom cover folding mechanism, an outer bottom cover folding mechanism, a bottom sealing mechanism, a first material channel for limiting the conveying of the carton in a straight line, and a first conveying mechanism for conveying the carton in the first material channel. The inner bottom cover folding mechanism, the outer bottom cover folding mechanism, and the bottom sealing mechanism are sequentially arranged along the first material channel. The first conveying mechanism comprises a conveying frame capable of moving horizontally left and right and a driving component 1 for intermittently driving the conveying frame to move horizontally. The conveying frame is lower than the first material channel, and the conveying frame can move left to the bottom of the box grabbing suction cup to receive the box plate lifted by the box grabbing suction cup and convey it to the right. The conveying frame is provided with a fixed pushing frame for pushing the received box plate into the first material channel and conveying it to the box opening station, and a plurality of movable pushing frames for pushing the carton in the first material channel to move right. The movable pushing frame can swing up and down relative to the conveying frame, so that the movable pushing frame can be changed between a horizontal folding state and a vertical pushing state. The conveying frame is provided with a driving component 2 for driving the movable pushing frame to swing. When the conveying frame moves left When the material is connected, the movable push frame is in a folded state and moves from the bottom of the carton to the left side of the carton. When the conveyor frame moves back to the right, the movable push frame changes to a pushing state to push the carton to the right. The unpacking mechanism is provided at the unpacking station. The unpacking mechanism is used to transport the conveyor frame to the box board at the unpacking station, open the box board so that the formed carton is placed on its side at the unpacking station. The inner bottom cover folding mechanism is used to fold the inner bottom covers on both sides of the formed carton inward, and the outer bottom cover folding mechanism is used to fold the outer bottom covers on both sides of the formed carton inward. Folding, so that the outer bottom cover is pressed against the outer side of the inner bottom cover after folding inward, the bottom sealing mechanism is arranged at the bottom sealing station, and the bottom sealing mechanism includes a clamping belt group and a tape applicator, the tape applicator is located at the bottom sealing station near the bottom of the carton lying on its side, the clamping belt group includes clamping belts located at the upper and lower sides of the bottom sealing station respectively, the clamping belts running on the plane drive the carton to move to the right by contacting the box walls on the upper and lower sides of the carton, so that the tape applicator sticks the tape on the center of the bottom of the carton with the bottom cover folded over.

[0010] The carton turning device comprises a first guide rod, a carton baffle plate and a first conveyor belt for conveying and moving the carton, the input end of the first conveyor belt is connected to the output end of the first material channel, and the first conveyor belt is lower than the first material channel, the first guide rod is arranged in the middle of the output end of the first material channel, biased towards the top of the carton, the first guide rod extends above the first conveyor belt, and the extension direction of the first guide rod is consistent with the conveying direction of the clamping belt. When the clamping belt conveys the carton with the bottom sealed from the first material channel to the top of the first conveyor belt, the first guide rod is supported on the side below the carton near the top and the bottom side of the carton is suspended, the bottom side of the carton is flipped downward by its own gravity so that the bottom of the carton falls upright on the first conveyor belt. The carton baffle plate is arranged on the side of the output end of the first material channel near the bottom of the carton, and an opening is provided between the carton baffle plate and the first guide rod for the bottom side of the carton to flip down and fall, and the carton baffle plate is used to prevent the carton from flipping to the flipping side when the carton is flipped and upright.

[0011] The box packing and capping device includes a cylinder conveyor belt, a material grabbing and boxing mechanism, an inner top cover folding mechanism, a first glue spraying mechanism, an outer top cover folding mechanism, a hanging ear inward folding mechanism, a second material channel for limiting the transportation of cartons in a straight line, and a second conveying mechanism for conveying cartons moving in the second material channel. The output end of the first conveyor belt is connected to the input end of the second material channel. The material grabbing and box packing mechanism, the inner top cover folding mechanism, the first glue spraying mechanism, the outer top cover folding mechanism, and the hanging ear inward folding mechanism are arranged in sequence along the second material channel. The second conveying mechanism includes a conveying chain arranged on both sides of the second material channel. The conveying chain is connected to the drive component three and is intermittently driven by the drive component three. A number of evenly distributed box pushing plates are provided on the conveying chain. The box pushing plates are used to push the cartons on the second material channel. The outer top cover folding mechanism is used to push the push box plate to the second folding station and fold the outer top covers on both sides of the carton inward so that the outer top cover is glued and fixed to the inner top cover folded inward. The ear inward folding mechanism is used to fold and stretch the ear plates on both sides of the top of the carton when the push box plate is pushed to the ear folding station, so that the ear plates are wrapped around the outside of the cylinder handle.

[0012] A further preferred technical solution of the present invention is that the length extension direction of the first material channel is parallel to the length extension direction of the second material channel, and the conveying direction of the first conveyor belt is perpendicular to the length extension direction of the first material channel.

[0013] The first material channel is formed by connecting two sections of different widths, the first and second material channels, the width of the first material channel is greater than the width of the second material channel, the width of the first material channel is adapted to the width of the carton when it is placed on its side with the bottom cover not folded, and the width of the second material channel is adapted to the width of the carton when it is placed on its side with the bottom cover fully folded inward. The first material channel includes two first limiting frames arranged in front and behind, and a space for placing cartons is formed between the two first limiting frames. The width of the first material channel can be adjusted by moving the two first limiting frames.

[0014] The second material channel includes two second limiting frames arranged in front and back, and a space for placing cartons is formed between the two second limiting frames. The width of the second material channel can be adjusted by moving the two second limiting frames. The conveyor chains on both sides of the second material channel and the driving components three for driving the conveyor chains are respectively arranged on the second limiting frames on both sides;

[0015] The output end of the first conveyor belt is provided with a first box stopper fixed on a second limit frame on one side, and the surface of the first box stopper used to contact the carton is flush with the inner wall of one side of the second material channel. The output end of the first conveyor belt is provided with a first box pushing member that can move left and right and a driving component four that drives the first box pushing member to move. When the first conveyor belt flips the vertically placed carton to the output end position, the carton rests on the first box stopper, and the first box pushing member pushes the carton resting on the first box stopper into the second material channel.

[0016] A further preferred technical solution of the present invention is that the carton loading device further comprises alignment plates located on both sides of the lifting rack and a driving assembly 16 for driving the alignment plates to move. The two alignment plates can be synchronously moved toward the middle or moved toward both sides and separated. The two alignment plates move toward the middle and push the carton plates on the middle lifting rack to the center.

[0017] A movable first support plate and a drive assembly five are installed on the alignment plate. The drive assembly five is connected to the first support plate to drive the first support plate to move horizontally to the middle to the bottom of the box plate for supporting the box plate.

[0018] A further preferred technical solution of the present invention is that a second glue spraying mechanism is provided between the inner bottom cover folding mechanism and the outer bottom cover folding mechanism. When the carton after the inner bottom cover is folded inward is transported from the conveying rack to the outer bottom cover folding mechanism, the carton moves past one side of the second glue spraying mechanism. The glue spraying port of the second glue spraying mechanism is opposite to the bottom of the passing carton, and glue is sprayed on the inner bottom covers on the left and right sides of the carton after folding inward as the carton moves, so that the outer bottom cover is glued to the inner bottom cover when folded inward. The second glue spraying mechanism includes two second automatic spraying mechanisms distributed above and below. Glue device, two sets of second automatic glue sprayers are opposite to the parts of the inner bottom cover of the carton that are used to contact the upper and lower outer bottom covers. A first guide pressure plate is provided between the inner bottom cover folding mechanism and the outer bottom cover folding mechanism. The horizontal distance between the first guide pressure plate and the inner wall of the first material channel close to the top of the carton is adapted to the horizontal distance between the bottom of the carton side and the inner wall of the first material channel close to the top of the carton. The first guide pressure plate is used to press the inner bottom covers on the left and right sides of the carton to fit with the bottom and guide them to the outer bottom cover folding mechanism.

[0019] A gluing mechanism located at the gluing station is provided between the bottom sealing mechanism and the outer bottom cover folding mechanism. The gluing mechanism is docked with the outer bottom cover folding mechanism. The gluing mechanism includes abutment plates and a first pressing plate relatively arranged on both sides of the first material channel. The first pressing plate is connected to the driving component six and is driven by the driving component six to move back and forth in a straight line. When the carton after the inner bottom cover and the outer bottom cover are glued is transported to the gluing station by the conveying rack, the driving component six drives the first pressing plate to move into the carton from the side opening of the carton, so that the first pressing plate presses the bottom of the glued carton onto the abutment plate.

[0020] A second guide pressure plate is provided between the abutment plate and the tape applicator, and the second guide pressure plate is provided with a plurality of guide rollers along the length direction for contacting the middle of the bottom of the carton, and the horizontal distance from the contact part of the guide roller to the inner wall of the first material channel close to the top of the carton is adapted to the horizontal distance from the bottom of the carton side to the inner wall of the first material channel close to the top of the carton, and the second guide pressure plate is used to guide the glued carton from the gluing station to the bottom sealing station.

[0021] A further preferred technical solution of the present invention is: the gluing mechanism also includes two plywoods located above the gluing station and capable of being raised and lowered, the clamping surfaces of the two plywoods being arranged vertically and parallel to each other, a clamping opening for the carton to enter being provided between the two plywoods, the two plywoods being connected to a drive assembly seven, the drive assembly seven driving the two plywoods to descend so that the two plywoods are clamped on both sides of the carton at the gluing station, and the two plywoods keep the box walls on both sides of the carton vertical.

[0022] The lifting mechanism comprises a lifting mechanism, a lifting mechanism comprising a first swing arm, a second swing arm, a lower suction cup located below the unpacking station, an upper suction cup located above the unpacking station, a suction cup frame and a driving component 8. The lower suction cup can be lifted up and down relative to the frame, and a driving component 9 is provided on the frame to drive the lower suction cup to lift and lower. One end of the first swing arm is connected to the driving component 8 and is driven by the driving component 8 to swing up and down, the other end of the first swing arm is rotatably connected to the suction cup frame, one end of the second swing arm is rotatably connected to the frame, and the other end of the second swing arm is rotatably connected to the suction cup frame. The first swing arm is parallel to the second swing arm, and the upper suction cup is fixed on the suction cup frame, and the driving component 8 drives the first swing arm to swing so that the suction cup frame moves obliquely upward and downward. During the up and down movement of the suction cup frame, the adsorption surface of the upper suction cup is always facing downward. When the box plate is transported to the unpacking station by the conveying frame, the lower suction cup sucks one side of the box surface below the box plate, and the upper suction cup moves downward to suck the upper part of the box plate and pulls up one side of the box surface above the box plate, so that the formed carton is placed on its side on the material channel.

[0023] The inner bottom cover folding mechanism includes a first folding member and a first folding plate located on the left and right sides of the unpacking station, the first folding member can move horizontally and obliquely relative to the frame to push the inner bottom cover on the left side of the carton at the unpacking station to fold inward, the frame is provided with a driving component 10 that drives the first folding member to move, the horizontal distance between the first folding plate and the bottom of the carton located in the first material channel gradually becomes smaller, the first folding plate is used to guide the inner bottom cover on the right side of the carton to fold inward when the carton at the unpacking station is conveyed to the right, the left and right sides of the first folding plate are respectively connected to the first folding member and the first guide pressure plate,

[0024] The outer bottom cover folding mechanism includes two symmetrically arranged folding rods, one end of the two folding rods is connected to the first guide pressure plate, and the other end of the two folding rods is connected to the abutment plate. The two folding rods gradually move closer to each other toward the middle, and the horizontal distance between the two folding rods and the bottom of the carton located in the first material channel gradually decreases. There is an entrance between the ends of the two folding rods connected to the first guide pressure plate for the outer bottom covers on both sides of the bottom of the carton to enter. When the carton is transported from the first guide pressure plate to the gluing station, the outer bottom covers on the upper and lower sides of the bottom of the carton move from the entrance into between the two folding rods and contact the upper and lower folding rods, and as the distance between the upper and lower folding rods and the bottom of the carton becomes smaller, the upper and lower outer bottom covers are folded over to fit the bottom of the carton, and the outer bottom cover is pressed on the outside of the inner bottom cover after folding inward and glued to the inner bottom cover to seal the bottom of the carton.

[0025] A further preferred technical solution of the present invention is: at least one side of the first conveyor belt is provided with a second box stopper located at a waiting position, the second box stopper can move horizontally, the second box stopper is connected to the drive component eleven, the drive component eleven drives the second box stopper to move laterally to block or release the cartons transported by the first conveyor belt, and the released cartons are transported from the waiting position to a position against the first box stopper.

[0026] A further preferred technical solution of the present invention is as follows: the material grabbing and boxing mechanism includes a rotating frame and a lifting frame installed on the rotating frame, the rotating frame is connected to a driving assembly 12 and is driven to rotate by the driving assembly 12, the lifting frame can be raised and lowered relative to the rotating frame, the rotating frame is provided with a driving assembly 13 for driving the lifting frame to rise and fall, both sides of the lifting frame are provided with clamping members that can be opened and closed, the clamping members on both sides alternately clamp the steel cylinders transported on the steel cylinder conveyor belt and load them into cartons at the boxing station,

[0027] The inner top cover folding mechanism includes a left folding plate and a right folding plate located above the first folding station. The right folding plate can swing up and down. A driving assembly 14 is provided on the frame to drive the right folding plate to swing. The right end of the left folding plate has a bevel for guiding the inner top cover on the left side of the carton to fold inward. The distance between the bevel and the bottom of the second material channel in the vertical direction gradually decreases. When the carton is transported to the first folding station by the conveyor chain, the inner top cover on the left side of the carton top contacts the bevel, so that the left side The inner top cover of the carton is folded inwardly, and the right folding plate swings downwardly and contacts the inner top cover on the right side of the carton, so that the inner top cover on the right side is folded inwardly, and a third guide pressing plate is provided between the first folding station and the second folding station. The third guide pressing plate is connected to the left folding plate. The bottom of the third guide pressing plate is used to touch the bottom edge of the inner top cover of the carton. The height is adapted to the height of the carton placed in the second material channel, so that it can press the left and right inner top covers of the carton to a horizontal level and guide them from the first folding station to the second folding station.

[0028] The first glue spraying mechanism includes a first automatic glue sprayer located above the first glue spraying station. The first automatic glue sprayer can move forward and backward. A driving assembly 15 is provided on the frame to drive the first automatic glue sprayer to move. When the carton is transported to the first glue spraying station by the conveyor chain, the first automatic glue sprayer moves forward and backward to spray glue on the outer surface of the inner top cover of the carton that is folded inward to a horizontal position.

[0029] The outer top cover folding mechanism includes two outer top cover folding assemblies which are relatively arranged above the second folding station in a front and rear direction. The outer top cover folding assembly includes a folding roller, a third swing arm, a mounting frame which can move horizontally and linearly back and forth, and a driver 1 which drives the mounting frame to move. The third swing arm is rotatably connected to the mounting frame and can swing up and down relative to the mounting frame. The two folding rollers are respectively mounted on the opposite ends of the two third swing arms. An elastic member is provided between the third swing arm and the mounting frame to provide a reset force for the third swing arm. When the carton after the inner top cover is glued is transported to the second folding station, the folding rollers on both sides move toward the middle and contact the folding part of the outer top cover of the carton. The folding part pushes the folding rollers to make the folding rollers swing upward and pass through the folding part to fold the outer top covers on both sides inward to a horizontal position, so that the outer top cover and the inner top cover are glued.

[0030] Two positioning plates connected to the third guide plate are provided above the second folding station. The length extension direction of the two positioning plates is consistent with the conveying direction of the carton. The two positioning plates are parallel to each other and perpendicular to the moving direction of the mounting frame. When the carton after the inner top cover is glued is conveyed to the second folding station, the two positioning plates extend between the front and rear outer top covers of the carton. The height of the positioning plates is adapted to the height of the carton placed on the second folding station, and the distance between the outer edges of the positioning plates is adapted to the distance between the inner sides of the folding parts of the two outer top covers of the carton.

[0031] The output end of the second folding station is connected to two fourth guide pressure plates arranged in front and behind. The fourth guide pressure plates extend above the ear folding station. The height of the two fourth guide pressure plates to the second material channel is adapted to the height of the cartons placed in the second material channel. When the carton with the outer top cover folded inward is transported to the bottom of the two fourth guide pressure plates, the fourth guide pressure plates respectively touch and press the outer top covers on both sides of the carton that have been folded inward.

[0032] A further preferred technical solution of the present invention is that the ear folding mechanism includes a rear ear assembly for folding the ear plate on the rear outer top cover of the carton inwardly and a front ear assembly for folding the ear plate on the front outer top cover of the carton inwardly, and the front ear assembly and the rear ear assembly are sequentially arranged along the second material channel.

[0033] The front folding ear assembly includes an L-shaped front folding ear frame located at the first folding ear station, a second driver for driving the front folding ear frame to rise and fall, and a third driver for driving the front folding ear frame to move forward and backward. When the carton with the cap is delivered to the first folding ear station, the second driver drives the front folding ear frame to move downward to fold down the ear plate on the front outer top cover, and the third driver drives the front folding frame to move forward and horizontally to support the folded ear plate inward so that the ear plate is wrapped around the outside of the cylinder handle.

[0034] The rear folding ear assembly includes an L-shaped rear folding ear frame located at the second ear folding station, a driver four for driving the rear folding ear frame to rise and fall, and a driver five for driving the rear folding ear frame to move forward and backward. When the carton with the cap is transported to the second ear folding station, the driver four drives the rear folding ear frame to move downward to fold down the ear plate on the rear outer top cover, and the driver five drives the rear folding frame to move horizontally backward to support the folded ear plate inward so that the ear plate is wrapped around the outside of the cylinder handle.

[0035] Another topic: The method of unpacking and bottling using a cylinder packaging machine includes the following steps:

[0036] S1, the second driving mechanism drives the box grabbing suction cup to descend and lift the top box board horizontally stacked on the lifting rack upwards;

[0037] S2, drive assembly 1 drives the conveyor frame to move to the left, so that the material receiving end of the conveyor frame moves to the material receiving position below the box grabbing suction cup, and the box grabbing suction cup releases the box plate sucked by it, so that the box plate falls to the material receiving end of the conveyor frame, completing the material receiving. Drive assembly 1 drives the conveyor frame to move back to the right, and pushes the box plate received by the material receiving end into the first material channel through the fixed push frame and conveys it to the right;

[0038] S3, the first conveying mechanism conveys the flat box plate to the unpacking station, and the unpacking mechanism opens the box plate at the unpacking station so that the formed carton is placed on its side on the unpacking station, completing the unpacking and forming of the carton;

[0039] S4, the inner bottom cover folding mechanism folds the inner bottom covers on both sides of the carton after unpacking and forming inward;

[0040] S5, the outer bottom cover folding mechanism folds the outer bottom covers on both sides of the carton after the carton is opened and formed inward, so that the outer bottom covers on both sides are pressed onto the outside of the inner bottom covers after the two sides are folded inward, thereby sealing the bottom of the carton;

[0041] S6: The first conveyor mechanism conveys the carton with the bottom cover folded to the bottom sealing station. The carton is moved between the upper and lower clamping belts and conveyed to the right by the clamping belts. The tape applicator applies tape to the center of the bottom of the carton conveyed by the clamping belts, completing the bottom sealing.

[0042] S7: The clamping belt conveys the carton with the sealed bottom to above the input end of the first conveyor belt. At this time, the first guide rod is supported on the side of the carton near the top and the bottom side of the carton is suspended in the air. The bottom side of the carton flips downward due to its own gravity, so that the carton falls upright with the bottom facing downward on the first conveyor belt, completing the flipping of the carton from lying on its side to being placed upright with the bottom facing downward.

[0043] S8, the first conveyor belt conveys the upright cartons to the output end connected to the second material channel, so that the cartons enter the second material channel and are conveyed by the second conveying mechanism;

[0044] S9, the second conveying mechanism conveys the carton to the packing station, and the grabbing and packing mechanism picks up the cylinders conveyed by the cylinder conveyor belt to one side of the packing station and packs them into the carton at the packing station;

[0045] S10, the second conveying mechanism conveys the bottled carton to the first folding station, and the inner top cover folding mechanism folds the inner top covers on both sides of the carton at the first folding station inward;

[0046] S11, the second conveying mechanism conveys the carton with the inner top cover folded to the first gluing station, and the first gluing mechanism glues the inner top cover folded on both sides of the carton at the first gluing station until it is horizontal;

[0047] S12, the second conveying mechanism conveys the glued carton to the second folding station, and the outer top cover folding mechanism folds the outer top covers on both sides of the carton at the second folding station inward, so that the outer top covers are glued and fixed to the folded inner top covers;

[0048] S13, the second conveying mechanism conveys the carton with the outer top covers on both sides folded inward to the ear folding station, and the ear folding mechanism folds the ear plates on both sides of the top of the carton at the ear folding station inward and stretches them out, so that the ear plates are wrapped around the outside of the handles on both sides of the cylinder, completing the bottom sealing of the carton.

[0049] The advantage of the present invention over the prior art is that a carton turning device is arranged between the bottom sealing device for unpacking and the top sealing device for packing, and the carton turning device comprises a first guide rod, a carton baffle and a first conveyor belt for conveying and moving the carton, the input end of the first conveyor belt is connected to the first material channel, the conveying end of the first conveyor belt is connected to the second material channel, the first conveyor belt is lower than the first material channel, the first guide rod is arranged in the middle of the output end of the first material channel, biased to one side of the top of the carton, the first guide rod extends above the first conveyor belt, and the extension direction of the first guide rod is consistent with the conveying direction of the clamping belt. When the clamping belt conveys the carton with the bottom sealed from the first material channel to the top of the first conveyor belt, the first guide rod is supported on the side of the bottom of the carton near the top and the bottom side of the carton is suspended. The bottom side of the box is flipped downward by its own gravity so that the bottom of the carton falls upright on the first conveyor belt, completing the flipping of the carton. The first conveyor belt conveys the flipped carton to the second material channel. The carton is flipped by setting a first guide rod, which has a simple structure and low cost. The carton flipping device connects the bottom sealing device for unpacking and the top sealing device for packing to form a complete packaging line. There is no need to use manpower to flip and transport the carton, which improves work efficiency. In addition, a box baffle is provided on one side of the first guide rod, and an opening is provided between the box baffle and the first guide rod for the bottom side of the carton to flip and fall downward. The box baffle is used to prevent the carton from continuing to flip to the flipped side due to inertia when the carton is flipped and upright, so that the carton falls more steadily on the first conveyor belt, thereby improving the stability of the box flipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0051] Figure 1 It is a schematic diagram of the overall structure of the packaging machine;

[0052] Figure 2 This is the connection diagram of the carton loading device, the carton opening and bottom sealing device, and the carton turning device;

[0053] Figure 3 This is a diagram of the material receiving status of the carton loading device and the carton opening and bottom sealing device;

[0054] Figure 4 Packaging flow chart for the unpacking and bottom sealing device and the carton turning device;

[0055] Figure 5 It is a structural diagram of the conveyor frame;

[0056] Figure 6 It is a structural diagram of the unpacking mechanism;

[0057] Figure 7 It is a structural diagram of the inner bottom cover folding mechanism;

[0058] Figure 8 It is a structural diagram of the glue pressing mechanism and the outer bottom cover folding mechanism;

[0059] Figure 9 This is a diagram showing the connection between the carton turning device and the packing and capping device;

[0060] Figure 10 This is a structural diagram of a carton turning device;

[0061] Figure 11 A schematic diagram of the second conveying mechanism conveying cartons;

[0062] Figure 12 Schematic diagram of the inner top cover folding mechanism, outer top cover folding mechanism, first glue spraying mechanism, and ear inner folding mechanism;

[0063] Figure 13 This is a diagram of the folding state of the inner top cover folding mechanism;

[0064] Figure 14 FIG3 is a guide state diagram of the third guide pressure plate;

[0065] Figure 15 This is a diagram of the folding state of the outer top cover folding mechanism;

[0066] Figure 16 This is a diagram of the folding status of the ear folding mechanism.

[0067] In the figure: 1. Carton loading device; 2. Carton opening and bottom sealing device; 3. Carton turning device; 4. Carton filling and top sealing device; 5. Robot; 6. Carton; 7. Push rod; 8. Cylinder seven; 9. Bottom sealing mechanism; 10. First limiting frame; 11. First conveying mechanism; 12. Gluing mechanism; 13. Outer bottom cover folding mechanism; 14. Second glue spraying mechanism; 15. Alignment plate; 16. Cylinder two; 17. Lifting frame; 18. First support plate; 19. Cylinder three; 20. Chain one; 21. Carton grabbing suction cup; 22. Cylinder one; 23. Conveyor frame; 24. Fixed push frame; 25. Box board; 26. Material channel one; 27. Movable push frame; 28. Inner bottom cover folding mechanism; 29. ​​Carton opening mechanism; 30. Material channel two; 31. First folding piece; 32. 1. Folding plate; 33. Second automatic glue sprayer; 34. Inner bottom cover; 35. Outer bottom cover; 36. First guide pressure plate; 37. Folding rod; 38. First pressure plate; 39. Abutment plate; 40. Third box stopper; 41. Clamping belt; 42. Tape applicator; 43. Cylinder 18; 44. First guide rod; 45. Box stopper; 46. First conveyor belt; 47. Second box stopper; 48. Cylinder 10; 49. Slide rail 2; 50. Nut block 1; 51. Servo motor 2; 52. Cylinder 4; 53. Cylinder 5; 54. Lower suction cup; 55. Upper suction cup; 56. Suction cup frame; 57. Second swing arm; 58. First swing arm; 59. Servo motor 3; 60. Cylinder 9; 61. Cylinder 6; 62. Clamping plate; 63. Slide frame 2; 64 , slide rail four; 65, belt one; 66, slide rail three; 67, servo motor four; 68, slide frame one; 69, long frame; 70, belt two; 71, first box pusher; 72, slide frame three; 73, first box stopper; 74, cylinder conveyor belt; 75, second limit frame; 76, material grabbing and packing mechanism; 77, second conveying mechanism; 78, inner top cover folding mechanism; 79, first glue spraying mechanism; 80, outer top cover folding mechanism; 81, ear inner folding mechanism; 82, second material channel; 83, servo motor five; 84, rotating frame; 85, lifting frame; 86, clamping member; 87, servo motor six; 88, screw rod two; 89, slide rail six; 90, positioning baffle; 91, box pusher plate; 92, conveyor chain; 93, sprocket three; 94, from Dynamic vertical axis; 95, unpowered roller line; 96, frame; 97, cylinder 11; 98, connecting frame; 99, cylinder 16; 100, transmission vertical axis; 101, driven bevel gear; 102, active bevel gear; 103, horizontal axis; 104, reduction motor; 105, positioning plate; 106, first automatic glue sprayer; 107, rodless cylinder; 108, third guide plate; 109, inner top cover; 110, right folding plate; 111, bevel edge; 112, left folding plate; 113, rotating shaft; 114, cylinder 12; 115, rocker arm; 116, crease portion; 117, third rocker arm; 118, tension spring; 119, outer top cover; 120, folding roller; 121, cylinder 13; 122, mounting frame; 123, limit step;124, fourth guide plate; 125, front folding ear assembly; 126, rear folding ear assembly; 127, ear plate; 128, cylinder 14; 129, cylinder 15; 130, front folding ear frame; 131, cylinder 17; 132, second guide plate; 133, rear folding ear frame. DETAILED DESCRIPTION

[0068] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0069] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0070] Figures 1-16 As shown, the cylinder packaging machine includes a frame 96, on which are provided a carton loading device 1, a carton opening and bottom sealing device 2, a carton turning device 3 and a carton filling and top sealing device 4. The input end and output end of the carton turning device 3 are respectively connected to the output end of the carton opening and bottom sealing device 2 and the input end of the carton filling and top sealing device 4, and the carton loading device 1 is arranged at the input end of the carton opening and bottom sealing device 2.

[0071] Figure 2 As shown, the carton loading device 1 includes a lifting rack 17 that can be raised and lowered, a driving mechanism 1 for driving the lifting rack 17 to be raised and lowered, a box grabbing suction cup 21 that can be raised and lowered, and a driving mechanism 2 for driving the box grabbing suction cup 21 to be raised and lowered. The sheet-like box plates 25 to be unpacked are stacked horizontally on the lifting rack 17. The box grabbing suction cup 21 is located above the lifting rack 17 and is used to lift the box plates 25 upward for loading.

[0072] Preferably, the driving mechanism 1 is a sprocket chain lifting mechanism, comprising a servo motor 1, a transmission shaft 1, a chain 1 20, a sprocket 1 and a sprocket 2, wherein the servo motor 1 is fixed to the frame 96, the transmission shaft 1 is arranged in the Y-axis direction, the transmission shaft 1 is rotatably connected to the frame 96 and one end is connected to the output shaft of the servo motor 1, two sprockets 1 are fixed to the transmission shaft 1, and the frame 96 is provided with sprockets 2 corresponding to the two sprockets 1 respectively, the sprockets 2 are located below the sprockets 1, the chain 1 20 is connected between the sprockets 1 and the sprockets 2, the material lifting frame 17 is installed on the chain 1 20 on both sides, and the frame 96 is provided with a slide rail 1, the material lifting frame 17 is slidably connected to the slide rail 1 and can be lifted and lowered along the slide rail 1. When the servo motor 1 is started, the chain 1 20 drives the material lifting frame 17 to rise and fall. The material lifting frame 17 comprises a horizontal frame and a vertical frame connected to the horizontal frame, and the horizontal frame and the vertical frame are connected in an L-shape for lifting materials.

[0073] Preferably, the second driving mechanism includes a cylinder 1 22 fixed on the frame 96, and the box grabbing suction cup 21 is fixed on the cylinder 1 22 with the adsorption surface of the box grabbing suction cup 21 facing downward.

[0074] When the box grabbing suction cup 21 lifts one box plate 25 placed on the lifting rack 17, the lifting rack 17 is lifted up to a certain height so that the uppermost box plate 25 on the lifting rack 17 is always within a set height range for the box grabbing suction cup 21 to load materials.

[0075] In addition, the carton loading device 1 further includes alignment plates 15 located on both sides of the lifting rack 17 and a drive assembly 16 for driving the alignment plates 15 to move. The two alignment plates 15 can be synchronously moved toward the center to be closer together or to the sides to be separated. Preferably, the alignment plates 15 are slidably connected to the frame 96 via a slide rod sleeved on the frame 96. The drive assembly 16 includes a second cylinder 16 fixed to the frame 96. The second cylinder 16 is connected to the alignment plates 15. When it is necessary to align the box panels 25 placed on the lifting rack 17, the alignment plates 15 on both sides are driven by the second cylinder 16 to move toward the center to push the box panels 25 on the middle lifting rack 17 in an orderly manner, and the two alignment plates 15 can be limited on both sides of the box panels 25.

[0076] In addition, a movable first support plate 18 and a drive assembly 5 are mounted on the alignment plate 15. The drive assembly 5 is connected to the first support plate 18 to drive the first support plate 18 to move horizontally toward the middle. Preferably, the drive assembly 5 is a cylinder 3 19 fixed to the alignment plate 15. When there are a few carton boards 25 remaining on the lifting rack 17, such as two or three, the cylinder 3 19 drives the first support plate 18 to move horizontally toward the middle to below the remaining carton boards 25 to support the carton boards 25. At this time, the lifting rack 17 can be lowered to add carton boards 25, saving time and without interrupting the feeding. The carton loading device 1 can be docked with a feeding conveyor for loading, or it can be loaded manually.

[0077] Figure 3 、 Figure 4 As shown, the unpacking and bottom sealing device 2 includes an unpacking mechanism 29, an inner bottom cover folding mechanism 28, an outer bottom cover folding mechanism 13, a bottom sealing mechanism 9, a first material channel for limiting the conveyance of the carton 6 in a straight line, and a first conveying mechanism 11 for conveying the carton 6 in the first material channel.

[0078] Figure 9 As shown, the boxing and capping device 4 includes a cylinder conveyor belt 74, a material grabbing and boxing mechanism 76, an inner top cover folding mechanism 78, a first glue spraying mechanism 79, an outer top cover folding mechanism 80, an ear inner folding mechanism 81, a second material channel 82 for limiting the conveyance of the carton 6 in a straight line, and a second conveying mechanism 77 for conveying the carton 6 in the second material channel 82.

[0079] The carton turning device 3 includes a first guide rod 44, a carton baffle 45 and a first conveyor belt 46 for conveying the carton 6. The input end of the first conveyor belt 46 is connected to the output end of the first material channel, and the output end of the first conveyor belt 46 is connected to the input end of the second material channel 82.

[0080] Preferably, the length extension direction of the first material channel is parallel to the length extension direction of the second material channel 82, and the conveying direction of the first conveyor belt 46 is perpendicular to the length extension direction of the first material channel. The direction in which the first conveying mechanism 11 conveys the carton 6 along the first material channel is defined as conveying from left to right along the X-axis direction. Then the conveying direction of the first conveyor belt 46 is conveying from back to front along the Y-axis direction, and the direction in which the second conveying mechanism 77 conveys the carton 6 along the second material channel 82 is conveying from right to left along the X-axis direction.

[0081] The inner bottom cover folding mechanism 28, the outer bottom cover folding mechanism 13, and the bottom sealing mechanism 9 are sequentially arranged on one side of the first material channel along the conveying direction of the carton 6 in the first material channel.

[0082] The first material channel is formed by docking two sections of material channel 1 26 and material channel 2 30 of different widths. The width of material channel 1 26 is greater than the width of material channel 2 30. The width of material channel 1 26 is adapted to the width of the carton 6 when it is placed on its side and the bottom cover is not folded. The width of material channel 2 30 is adapted to the width of the carton 6 when it is placed on its side and the bottom cover is completely folded inward. In addition, the first material channel includes two first limiting frames 10 arranged in front and back, and a space for placing the carton 6 is formed between the two first limiting frames 10. The width of the first material channel can be adjusted by moving the two first limiting frames 10. Preferably, the two first limiting frames 10 are fixedly connected to the frame 96 by bolts. The two first limiting frames 10 have bolt holes, which are long holes. The bolt holes have space for the bolts to move back and forth relative to each other. The first limiting frames 10 can be moved to obtain the first material channel of the desired width and then fixed by bolts.

[0083] Figure 5 As shown, the first conveying mechanism 11 includes a conveyor frame 23 that can move horizontally and intermittently, and a drive assembly 1 that drives the conveyor frame 23 to move horizontally. The conveyor frame 23 is lower than the first material channel. The conveyor frame 23 can move to the left to the bottom of the box grabbing suction cup 21 to receive the box plate 25 lifted by the box grabbing suction cup 21 and transport it to the right. The conveyor frame 23 is provided with a fixed pusher 24 for pushing the received box plate 25 into the first material channel and transporting it to the unpacking station, and a plurality of movable pushers 27 for pushing the carton 6 in the first material channel to the right. The fixed pusher 24 is fixed to the receiving end of the conveyor frame 23. The movable pusher 27 can swing up and down relative to the conveyor frame 23, so that the movable pusher 27 can switch between a horizontal folded state and a vertical material pushing state. The conveyor frame 23 is provided with a drive assembly 2 for driving the movable pusher 27 to swing. The plurality of movable pushers 27 are evenly arranged on the right side of the fixed pusher 24 along the length direction of the conveyor frame 23.

[0084] Preferably, the driving component 1 includes a servo motor 2 51 and a screw rod 1, the conveying frame 23 is slidably connected to the slide rail 2 49 on the frame 96, and can move horizontally left and right along the slide rail 2 49, the servo motor 2 51 is fixed on the frame 96, the screw rod 1 is connected to the output shaft of the servo motor 2 51, and a nut block 1 50 is fixed to the bottom of the conveying frame 23, and the screw rod 1 is threadedly connected to the nut block 1 50.

[0085] Preferably, the driving component two includes a cylinder four 52, the movable push frame 27 is rotatably connected to the conveying frame 23, one end of the cylinder body of the cylinder four 52 is rotatably connected to the conveying frame 23, the piston rod of the cylinder four 52 is rotatably connected to the movable push frame 27, and the rotation point deviates from the rotation center of the movable push frame 27, and the piston rod of the cylinder four 52 is telescopically driven to drive the movable push frame 27 to swing up and down relative to the conveying frame 23.

[0086] Figure 3 As shown, when the conveyor frame 23 moves to the left, the material receiving end of the conveyor frame 23 extends out of the input end of the first material channel and moves left to the bottom of the box grabbing suction cup 21. At the same time, the movable push frames 27 in the folded state pass under the cartons 6 at various positions in the first material channel and move to the left side of the cartons 6. Figure 4 As shown, when the conveyor frame 23 moves to the right, the fixed push frame 24 located at the receiving end pushes the received box plate 25 from the input end of the first material channel into the first material channel and conveys it to the right to the unpacking station. At the same time, each movable push frame 27 changes to the pushing state to push the carton 6 at each position to the next position to the right. The conveyor frame 23 moves back and forth once, receives the material once, and each movable push frame 27 pushes the carton 6 at the previous position to the right to the next position once, so as to realize intermittent step-by-step conveying of the cartons 6 in the first material channel to the right.

[0087] The unpacking mechanism 29 is provided at the unpacking station, and is used to transport the conveying rack 23 to the box plate 25 at the unpacking station, open it, and form the carton 6 so that it is placed on its side at the unpacking station.

[0088] Figure 6As shown, the unpacking mechanism 29 includes a first swing arm 58, a second swing arm 57, a lower suction cup 54 located below the unpacking station, an upper suction cup 55 located above the unpacking station, a suction cup frame 56 and a drive component eight. The lower suction cup 54 can be raised and lowered relative to the frame 96. The frame 96 is provided with a drive component nine for driving the lower suction cup 54 to rise and fall. One end of the first swing arm 58 is connected to the drive component eight and is driven by the drive component eight to swing up and down. The other end of the first swing arm 58 is rotatably connected to the suction cup frame 56, one end of the second swing arm 57 is rotatably connected to the frame 96, and the other end of the second swing arm 57 is rotatably connected to the suction cup frame 56. The first swing arm 58 is parallel to the second swing arm 57, and the upper suction cup 55 is fixed on the suction cup frame 56. When the drive component eight drives the first swing arm 58 to swing, the suction cup frame 56 moves obliquely up and down. During the up and down movement of the suction cup frame 56, the adsorption surface of the upper suction cup 55 is always facing downward.

[0089] Preferably, the driving component nine is a cylinder five 53 fixed on the frame 96, and the adsorption surface of the lower suction cup 54 faces upward.

[0090] Preferably, the driving component eight is a servo motor three 59, which is fixed on the frame 96, and one end of the first swing arm 58 is connected to the output shaft of the servo motor three 59, the point where the first swing arm 58 is connected to the output shaft, the rotation point of the first swing arm 58 and the suction cup frame 56, the rotation point of the second swing arm 57 and the frame 96, and the rotation point of the second swing arm 57 and the suction cup frame 56, the four points are connected to form a parallelogram structure, and when the suction cup frame 56 moves and is driven by the first swing arm 58 to move, the upper suction cup 55 is always adsorbed downward.

[0091] When the box plate 25 is transported to the unpacking position by the conveyor rack 23, the lower suction cup 54 sucks the side of the box surface below the box plate 25, and the upper suction cup 55 moves downward to suck the top of the box plate 25 and pulls up the side of the box surface above the box plate 25, so that the carton 6 is formed and placed on its side, with the top and bottom of the formed carton 6 facing the front and back.

[0092] Figure 7As shown, the inner bottom cover folding mechanism 28 is used to fold the inner bottom covers 34 on the left and right sides of the formed carton 6 inward. The inner bottom cover folding mechanism 28 includes a first folding member 31 and a first folding plate 32 located on the left and right sides of the unpacking station. The first folding member 31 can move horizontally and obliquely relative to the frame 96 to push the inner bottom cover 34 on the left side of the carton 6 located at the unpacking station to fold inward. The moving direction of the first folding member 31 is oblique to the bottom side of the carton 6. The first folding plate 32 and the carton located in the first material channel are connected. 6 The distance between the bottoms of the cartons 6 in the horizontal direction gradually decreases. The first folding plate 32 is used to guide the inner bottom cover 34 on the right side of the carton 6 to fold inward when the carton 6 at the unpacking station is conveyed to the right. The left end of the first folding plate 32 is docked with the first folding member 31. When the first conveying mechanism 11 moves the carton 6 to the right out of the unpacking station, the inner bottom cover 34 on the left side of the carton 6 has moved to the side of the first folding plate 32 before moving out from the side of the first folding member 31, and is continued to be pressed by the first folding plate 32 to prevent it from turning outward.

[0093] A driving component 10 for driving the first folding member 31 to move is provided on the frame 96. Preferably, the driving component 10 is a cylinder 9 60.

[0094] A first guide pressure plate 36 for guiding is provided between the inner bottom cover folding mechanism 28 and the outer bottom cover folding mechanism 13. The first guide pressure plate 36 is fixed on the frame 96. The left and right ends of the first guide pressure plate 36 are respectively docked with the inner bottom cover folding mechanism 28 and the outer bottom cover folding mechanism 13. Preferably, the first folding plate 32 is fixed at the left end of the first guide pressure plate 36. The first folding plate 32 includes an inclined section for guiding the inner bottom cover 34 on the right side of the carton 6 to fold inward and a straight section connected to the left end of the inclined section. The straight section is fixedly connected to the right end of the first guide pressure plate 36 for transitioning the carton 6 to the first guide pressure plate 36. The straight section is docked with and flush with the first guide pressure plate 36.

[0095] The horizontal distance between the first guide pressure plate 36 and the inner wall of the first material channel close to the top of the carton 6 is adapted to the horizontal distance between the bottom of the carton 6 and the inner wall of the first material channel close to the top of the carton 6. The first guide pressure plate 36 is used to press the inner bottom cover 34 on the left and right sides of the carton 6 to fit with the bottom and guide it to the outer bottom cover folding mechanism 13.

[0096] A second glue spraying mechanism 14 is provided between the inner bottom cover folding mechanism 28 and the outer bottom cover folding mechanism 13. The second glue spraying mechanism 14 is provided on one side of the first material channel. When the first conveying mechanism 11 conveys the carton 6 with the inner bottom covers 34 on both sides folded inward to the outer bottom cover folding mechanism 13, the carton 6 moves past the side of the second glue spraying mechanism 14. The glue spraying port of the second glue spraying mechanism 14 is opposite to the bottom of the passing carton 6, and the glue is sprayed on the inner bottom cover 34 after the carton 6 is folded inward as the carton 6 moves, so that the outer bottom cover 35 is glued to the inner bottom cover 34 when it is folded inward.

[0097] The second glue spraying mechanism 14 includes two second automatic glue sprayers 33 arranged in an upper and lower arrangement. The two sets of second automatic glue sprayers 33 are located opposite the inner bottom cover 34 of the carton 6, where they contact the upper and lower outer bottom covers 35. The second automatic glue sprayers 33 are conventional automatic glue spraying structures and are fixed to the frame 96.

[0098] The carton 6 after the inner bottom cover 34 is glued is transported by the first conveying mechanism 11 to the outer bottom cover folding mechanism 13. The outer bottom cover folding mechanism 13 is used to fold the outer top covers 119 on the upper and lower sides of the formed carton 6 inward so that the outer bottom cover 35 is pressed against the outer side of the inner bottom cover 34 after folding inward.

[0099] Figure 8 As shown, the outer bottom cover folding mechanism 13 includes two symmetrically arranged folding rods 37, one end of the two folding rods 37 is connected to the first guide pressure plate 36, and the two folding rods 37 gradually move closer to each other toward the middle, and the horizontal distance between the two folding rods 37 and the bottom of the carton 6 located in the first material channel gradually decreases. The end of the two folding rods 37 connected to the first guide pressure plate 36 has an entrance for the outer bottom covers 35 on both sides of the bottom of the carton 6 to enter. When the carton 6 is transported to the right from the first guide pressure plate 36 through the outer bottom cover folding mechanism 13, the outer bottom covers 35 on the upper and lower sides of the bottom of the carton 6 move from the entrance to between the two folding rods 37 and contact the upper and lower folding rods 37, and as the distance between the upper and lower folding rods 37 and the bottom of the carton 6 gradually becomes smaller, the upper and lower outer bottom covers 35 are folded to fit the bottom of the carton 6, so that the outer bottom cover 35 is pressed on the outside of the inner bottom cover 34 after folding inward and adhered to the inner bottom cover 34 to seal the bottom of the carton 6.

[0100] In addition, a glue pressing mechanism 12 located at the glue pressing station is provided between the bottom sealing mechanism 9 and the outer bottom cover folding mechanism 13. The left side of the glue pressing mechanism 12 is connected to the outer bottom cover folding mechanism 13. The glue pressing mechanism 12 includes a supporting plate 39 and a first pressure plate 38 relatively arranged on both sides of the first material channel.

[0101] The abutment plate 39 and the outer bottom cover folding mechanism 13 are arranged on the same side of the first material channel, and the left side of the abutment plate 39 is connected to the right ends of the upper and lower folding rods 37. Preferably, the right ends of the upper and lower folding rods 37 are connected with a cross bar section flush with the plate surface of the abutment plate 39, and the left side of the abutment plate 39 is provided with an arc edge for connecting with the cross bar section, so that the bottom of the carton 6 can transition from the folding rod 37 to the abutment plate 39, and the folding rod 37 is fixed on the abutment plate 39.

[0102] The first pressure plate 38 is connected to the driving component six and is driven by the driving component six to move linearly in the Y-axis direction. Preferably, the driving component six includes a servo motor four 67, a belt one 65, a pulley one and a sliding frame one 68. A slide rail three 66 is provided on the frame 96. The sliding frame one 68 is slidably connected to the slide rail three 66 and can move linearly in the Y-axis direction along the slide rail three 66. The servo motor four 67 is fixed on the frame 96. Two pulleys one arranged in front and back are installed on the frame 96. The belt one 65 is connected between the two pulleys one. The output shaft of the servo motor four 67 is connected to one of the pulleys one. The sliding frame one 68 is fixed on the belt one 65 and is driven by the belt one 65 to move forward and backward in the Y-axis direction. A long frame 69 arranged in the Y-axis direction is fixed on the sliding frame one 68. The first pressure plate 38 is installed at the end of the long frame 69. When the first conveying mechanism 11 conveys the carton 6 after the outer bottom cover 35 is folded inward and glued to the inner bottom cover 34 to the gluing station, the bottom of the carton 6 is against the abutment plate 39, and the movement of the belt 65 drives the sliding frame 68 to move toward the side of the abutment plate 39, so that the first pressing plate 38 moves into the carton 6 from the side opening of the carton 6. The first pressing plate 38 presses the bottom of the carton 6 formed by gluing the inner bottom cover 34 and the outer bottom cover 35 together onto the abutment plate 39, so that the inner bottom cover 34 and the outer bottom cover 35 are fully bonded together.

[0103] In addition, a slide rail four 64 can be set on the long frame 69, and a slide frame two 63 is slidably connected to the slide rail four 64. The slide frame two 63 can move in the Y-axis direction along the slide rail four 64. The first pressure plate 38 is fixed on the slide frame two 63. The slide frame two 63 is provided with an adjustment threaded hole, and the long frame 69 is provided with an adjustment bolt hole opposite to the adjustment threaded hole. The bolt passes through the adjustment bolt hole and is threadedly connected to the adjustment threaded hole. The first pressure plate 38 can be adjusted to move forward and backward by rotating the adjustment bolt to adjust the position of the first pressure plate 38.

[0104] In addition, the glue pressing mechanism 12 also includes two plywood 62 located above the glue pressing station and capable of being raised and lowered. The clamping surfaces of the two plywood 62 are arranged vertically and parallel to each other. There is a clamping opening between the two plywood 62 for the carton 6 to enter. The two plywood 62 are connected to the drive assembly 7. Preferably, the drive assembly 7 includes a cylinder 61 fixed on the abutment plate 39. The piston rod of the cylinder 61 is connected to the horizontal cross plate. The two plywood 62 are connected to the bottom of the horizontal cross plate. When the cylinder 61 drives the two plywood 62 to descend so that the two plywood 62 are clamped on both sides of the carton 6 at the glue pressing station, the spacing between the two plywood 62 is adapted to the spacing between the box walls on both sides of the carton 6. The two plywood 62 keeps the box walls on both sides of the carton 6 vertical, preventing the carton 6 from tilting during the glue pressing by the first pressing plate 38. The lower ends of the two plywood 62 are provided with flared openings to facilitate the entry of the carton 6.

[0105] Figure 4As shown, the bottom sealing mechanism 9 is provided at the bottom sealing station, and the bottom sealing mechanism 9 includes a clamping belt group and a tape applicator 42. The tape applicator 42 is located at the bottom sealing station near the bottom side of the carton 6 lying on its side. The clamping belt group includes clamping belts 41 located on the upper and lower sides of the bottom sealing station, respectively. The left end of the clamping belt 41 is docked with the right end of the conveyor frame 23. The conveyor frame 23 conveys the glued carton 6 to the right to a position between the upper and lower clamping belts 41. The clamping belt 41 running on the plane drives the carton 6 to move to the right by contacting the box walls on the upper and lower sides of the carton 6, so that the tape applicator 42 sticks the tape on the center of the bottom of the carton 6 after the bottom cover is folded and cuts it, completing the bottom sealing of the carton 6. The tape applicator 42 is an existing tape applicator structure, and reference can be made to the tape applicator core disclosed in the reference patent CN111874349B.

[0106] A second guide pressure plate 132 is provided between the abutment plate 39 and the tape applicator 42. The second guide pressure plate 132 is arranged along the X-axis. The second guide pressure plate 132 is provided with a plurality of guide rollers along the length direction for contacting the middle of the bottom of the carton 6. The horizontal distance from the contact part of the guide roller to the inner wall of the first material channel close to the top of the carton 6 is adapted to the horizontal distance from the bottom of the carton 6 to the inner wall of the first material channel close to the top of the carton 6. The second guide pressure plate 132 is fixed on the frame 96 and is used to guide the glued carton 6 from the gluing station to the bottom sealing station. Since the inner bottom cover 34 and the outer bottom cover 35 are easily turned outward due to the rigid bonding, the outer bottom cover 35 is prevented from turning outward during transportation by pressing with the guide rollers on the second guide pressure plate 132.

[0107] On the basis of gluing, the bottom of the carton 6 is fixed with adhesive tape to make it more firm.

[0108] In addition, a push rod 7 is provided above the conveyor frame 23. The push rod 7 is arranged along the X-axis direction. The height of the push rod 7 is adapted to the height of the carton 6 placed sideways in the first material channel. The push rod 7 is close to the upper wall of the carton 6 to guide and limit the carton 6. Preferably, the push rod 7 can be raised and lowered. The frame 96 is provided with a cylinder 7 8 that drives the push rod 7 to rise and fall to adapt to cartons 6 of different heights.

[0109] In addition, the unpacking station and the gluing station are both provided with a third box stopper 40 and a cylinder eight for driving the third box stopper 40 to move up and down. The cylinder eight is fixed on the frame 96. The cylinder eight drives the third box stopper 40 to move up and down to block or release the carton 6 in the first material channel. The third box stopper 40 is used to position the carton 6 at the unpacking station and the gluing station.

[0110] The clamping belt 41 transports the bottom-sealed carton 6 to the right to the carton turning device 3 .

[0111] Figure 4As shown, the carton 6 placed on its side in the first material channel has its top facing forward and is located at the front side of the first material channel, while the bottom of the carton 6 is facing backward and is located at the rear side of the first material channel. The above-mentioned first conveyor belt 46 is lower than the first material channel, and the first guide rod 44 is connected to the middle position of the output end of the first material channel, which is biased to the front side. The first guide rod 44 is extended along the X-axis direction, and the first guide rod 44 extends to above the first conveyor belt 46. When the clamping belt 41 transports the carton 6 with the bottom sealed from the first material channel to above the first conveyor belt 46, the first guide rod 44 is supported on the side of the bottom of the carton 6 near the top and the bottom side of the carton 6 is suspended. The bottom side of the carton 6 is not supported and is flipped downward by gravity, so that the bottom of the carton 6 falls upright on the first conveyor belt 46.

[0112] The baffle plate 45 is located at the rear side of the first guide rod 44 in the Y-axis direction. The baffle plate 45 is fixed to the frame 96. The baffle plate 45 is arranged on the side of the output end of the first material channel near the bottom of the carton 6. The upper end of the baffle plate 45 is connected to the output end of the first material channel, and the lower end of the baffle plate 45 is connected to the first conveyor belt 46. There is an opening between the baffle plate 45 and the first guide rod 44 for the bottom side of the carton 6 to flip down and fall. Since the carton 6 falls from the bottom side, the carton 6 is flipped downward. When the carton 6 falls on the first conveyor belt 46 with the bottom facing down, the carton 6 may have the inertia to continue to flip backward. The baffle plate 45 blocks the rear side of the carton 6 falling on the first conveyor belt 46 to prevent the carton 6 from flipping backward, so that the carton 6 falls more stably on the first conveyor belt 46. The baffle plate 45 has a certain curvature.

[0113] Figure 9 As shown, the first conveyor belt 46 will flip the upright carton 6 forward and convey it. At this time, the top opening of the carton 6 is facing upward. The output end of the first conveyor belt 46 is provided with a first box stopper 73. The surface of the first box stopper 73 used to contact the carton 6 is flush with the inner wall of one side of the second material channel 82. The output end of the first conveyor belt 46 is on the right side opposite to the second material channel 82 and is provided with a first box pusher 71 that can move left and right in the X-axis direction and a drive component four that drives the first box pusher 71 to move. When the first conveyor belt 46 transports the folded vertically placed carton 6 to the output end position, the carton 6 rests on the first box stopper 73, and the first box pusher 71 pushes the carton 6 resting on the first box stopper 73 into the second material channel 82.

[0114] Preferably, the drive assembly four includes a drive motor, a belt two 70, a pulley two and a sliding frame three 72. The sliding frame three 72 is slidably connected to the frame 96. The sliding frame three 72 can move in the X-axis direction relative to the frame 96. The drive motor is fixed on the frame 96. The two pulleys two are distributed left and right in the X-axis direction. The belt two 70 is connected between the two pulleys two. The sliding frame three 72 is fixed on the belt two 70. The first push box component 71 is fixed on the sliding frame three 72. When the belt two 70 runs, it drives the first push box component 71 to move in the X-axis direction.

[0115] In addition, at least one side of the first conveyor belt 46 is provided with a second box stopper 47 located at a waiting position. The second box stopper 47 can move horizontally in the X-axis direction. The second box stopper 47 is connected to the drive assembly 11, and the drive assembly 11 drives the second box stopper 47 to move horizontally to block or release the cartons 6 conveyed by the first conveyor belt 46. The released cartons 6 are conveyed from the waiting position to a position abutting the first box stopper 73. In order to prevent one carton 6 from being pushed into the second material belt by the first box pusher 71 and another carton 6 having been conveyed to a position abutting the carton 6, thereby obstructing the pushing of the first box pusher 71, the second box stopper 47 is used to separate two adjacent cartons 6 conveyed on the first conveyor belt 46, so that the cartons 6 are intermittently moved one by one to a position abutting the first box stopper 73.

[0116] Preferably, there are two groups of second baffle box parts 47 and drive components 11, and the two groups of second baffle box parts 47 and drive components 11 are relatively arranged on both sides of the first conveyor belt 46. The drive component 11 is a cylinder 10 48 fixed on the frame 96, and the cylinder 10 48 is connected to the second baffle box part 47 to drive the second baffle box part 47 to move horizontally in the X-axis direction.

[0117] The second material channel 82 includes two second limit frames 75 arranged relative to each other in the front and rear directions, and a space for placing cartons 6 is formed between the two second limit frames 75. The vertically placed cartons 6 are pushed between the two second limit frames 75 by the first box pushing member 71. The width of the second material channel 82 can be adjusted by moving the two second limit frames 75. Preferably, the second limit frames 75 are slidably connected to the frame 96 through a slide rail five provided on the frame 96. The two second limit frames 75 move along the slide rail five in the Y-axis direction to approach or separate from each other. A cylinder eleven 97 for driving the second limit frame 75 to move is provided on the frame 96. Cartons 6 of different widths can be adapted by adjusting the distance between the two second limit frames 75.

[0118] The first stopper 73 is fixed on a second limiting frame 75 on one side.

[0119] Figure 10As shown, the material grabbing and packing mechanism 76, the inner top cover folding mechanism 78, the first glue spraying mechanism 79, the outer top cover folding mechanism 80, and the ear folding mechanism 81 are sequentially arranged along the second material channel 82. The inner top cover folding mechanism 78 is used to fold the inner top covers 109 on both sides of the carton 6 delivered to the first folding station inwardly, the first glue spraying mechanism 79 is used to glue the inner top covers 109 on both sides of the carton 6 delivered to the first glue spraying station folded to a horizontal position, the outer top cover folding mechanism 80 is used to fold the outer top covers 119 on both sides of the carton 6 delivered to the second folding station inwardly so that the outer top covers 119 are glued and fixed to the inner top covers 109 folded inwardly, and the ear folding mechanism 81 is used to fold the ear plates 127 on both sides of the top of the carton 6 delivered to the ear folding station inwardly and open them so that the ear plates 127 are wrapped around the outer side of the cylinder handle.

[0120] The second conveying mechanism 77 includes a conveying chain 92 arranged on both sides of the second material channel 82. The conveying chain 92 is connected to the drive component three and is gap-driven by the drive component three. A number of evenly distributed pushing plates 91 are provided on the conveying chain 92. The pushing plates 91 are used to intermittently push the cartons 6 on the second material channel 82 to the left along the X-axis direction. When the conveying chain 92 runs once, the cartons 6 at each position on the second material channel 82 are pushed to the left once by the corresponding pushing plates 91.

[0121] The conveying chains 92 on both sides of the second material channel 82 and the driving components 3 for driving the conveying chains 92 are respectively arranged on the second limiting frames 75 on both sides.

[0122] Figure 11 As shown, the conveying chains 92 on both sides are driven by the same driving component three. Preferably, the driving component three includes a reduction motor 104 and a horizontal shaft 103 arranged in the Y-axis direction. The horizontal shaft 103 is rotatably mounted on the second limiting frames 75 on both sides, and the horizontal shaft 103 is connected to the output shaft of the reduction motor 104. The left and right ends of the second limiting frames 75 on both sides are respectively equipped with a rotatable transmission vertical shaft 100 and a driven vertical shaft 94. The transmission vertical shaft 100 and the driven vertical shaft 94 are fixed with sprocket three 93, and the conveying chain 92 is connected to the sprocket three 93 on the transmission vertical shaft 100 and the driven vertical shaft 94 on the same side. Driven bevel teeth 101 are fixed on the transmission vertical shafts 100 on both sides. The horizontal shaft 103 is fixed with two active bevel teeth 102 corresponding to the driven bevel teeth 101 on both sides. The driven bevel teeth 101 are meshed with the active bevel teeth 102 and the transmission is changed vertically. When the reduction motor 104 is started, the horizontal shaft 103 drives the transmission vertical shafts 100 on both sides to rotate through the active bevel teeth 102, so that the conveyor chains 92 on both sides run synchronously.

[0123] In order to match the movement of the second limiting frames 75 on both sides, the horizontal axis 103 is configured as a telescopic cross-axis universal coupling.

[0124] The material grabbing and packing mechanism 76 is arranged at the packing station, and the cylinder conveyor belt 74 is used to transport the cylinders to one side of the packing station so that the material grabbing and packing mechanism 76 can lift the cylinders and pack them into the carton 6 at the packing station.

[0125] The cylinder conveyor 74 is located on one side of the second material channel 82 and conveys cylinders along the X-axis. Evenly spaced positioning racks are provided on the cylinder conveyor 74 for positioning the cylinders. Cylinders are placed on the positioning racks and transported by the cylinder conveyor 74 along the X-axis to the cylinder grabbing position on the side of the packing station. The cylinder conveyor 74 moves intermittently while conveying the cylinders.

[0126] The material grabbing and boxing mechanism 76 includes a rotating frame 84 and a lifting frame 85 installed on the rotating frame 84. The rotating frame 84 is rotatably installed on the frame 96. The rotation center of the rotating frame 84 is arranged vertically. The frame 96 is provided with a driving component 12 for driving the rotating frame 84 to rotate. The lifting frame 85 can be raised and lowered relative to the rotating frame 84. The rotating frame 84 is provided with a driving component 13 for driving the lifting frame 85 to rise and fall. Both sides of the lifting frame 85 are provided with clamping parts 86 that can be opened and closed. The clamping parts 86 on both sides alternately transport the cylinder conveyor belt 74 to the cylinder grabbing position, clamp the cylinder and load it into the carton 6 at the boxing station.

[0127] Preferably, the driving component twelve includes a servo motor five 83 fixed on the frame 96, a transmission gear connected to the output shaft of the servo motor five 83 and a driven gear connected to the rotating frame 84. The transmission gear and the driven gear are vertically changed in direction. When the servo motor five 83 is started, it drives the rotating frame 84 to rotate.

[0128] Preferably, the driving assembly thirteen includes a servo motor six 87 and a screw rod two 88. The servo motor six 87 is fixed on the rotating frame 84. The screw rod two 88 is rotatably installed on the rotating frame 84 and is connected to the output shaft of the servo motor six 87. A slide rail six 89 is provided on the side wall of the rotating frame 84. The lifting frame 85 is slidably connected to the slide rail six 89 and can move in the vertical direction along the slide rail six 89. A nut block two is fixed on the lifting frame 85. The nut block two is threadedly connected to the screw rod two 88. When the screw rod two 88 rotates, the lifting frame 85 is driven to move up and down relative to the rotating frame 84.

[0129] Preferably, two clamping members 86 are provided on both sides of the lifting frame 85. When the lifting frame 85 descends, the two clamping members 86 located above the steel cylinder grabbing position clamp the two steel cylinders respectively, and the lifting frame 85 drives the clamped steel cylinders to rise and lift the clamped steel cylinders. The driving assembly 12 drives the rotating frame 84 to rotate 180 degrees, so that the two clamping frames located above the boxing station rotate to above the steel cylinder grabbing position, and the two clamping members 86 located above the steel cylinder grabbing position rotate to above the boxing station. When the lifting frame 85 descends again, the two clamping members 86 located above the boxing station descend and load the clamped steel cylinders into the corresponding cartons 6. The two clamping members 86 located above the steel cylinder grabbing position descend and the steel cylinder conveyor belt 74 is transported to the two steel cylinder grabbing position, clamping them in preparation for the next boxing. The material grabbing and boxing mechanism 76 repeats the above operation to grab and box. Preferably, the clamping members 86 are existing air grippers.

[0130] Figure 13 As shown, the inner top cover folding mechanism 78 includes a left folding plate 112 and a right folding plate 110 located above the first folding station. The right folding plate 110 can swing up and down. A driving component fourteen for driving the right folding plate 110 to swing is provided on the frame 96. The right end of the left folding plate 112 has a bevel 111 for guiding the inner top cover 109 on the left side of the carton 6 to fold inward. The vertical distance between the bevel 111 and the bottom of the second material channel 82 gradually decreases. When the carton 6 is conveyed to the first folding station by the conveyor chain 92, the inner top cover 109 on the left side of the carton 6 contacts the bevel 111, so that the inner top cover 109 on the left side is folded inwardly of the carton 6, and the right folding plate 110 swings downward and contacts the inner top cover 109 on the right side of the carton 6, so that the inner top cover 109 on the right side is folded inwardly of the carton 6.

[0131] Preferably, the drive component fourteen includes a cylinder twelve 114 and a rocker arm 115, a rotating shaft 113 with an axis Y-axis is installed on the frame 96, the upper end of the right folding plate 110 is fixed on the rotating shaft 113, one end of the cylinder twelve 114 is rotatably connected to the frame 96, one end of the rocker arm 115 is fixed to the rotating shaft 113, and the other end of the rocker arm 115 is rotatably connected to the piston rod of the cylinder twelve 114. When the piston rod of the cylinder twelve 114 is in an extended state, the left folding plate 112 is in an upward swing state. When the piston rod of the cylinder twelve 114 retracts, the piston rod pulls the rocker arm 115 to rotate around the axis of the rotating shaft 113, and the rotating shaft 113 rotates synchronously with the rocker arm 115, so that the right folding plate 110 swings downward.

[0132] Figure 14As shown, a third guide platen 108 is provided between the first and second folding stations. The third guide platen 108 is connected to a left folding plate 112. The bottom of the third guide platen 108 is used to contact the bottom edge of the inner top cover 109 of the carton 6. The height of the third guide platen 108 matches the height of the carton 6 placed in the second material channel 82. This allows the third guide platen 108 to fold the inner top covers 109 of the carton 6 to a horizontal position and guide the carton 6 from the first folding station to the second folding station. The third guide platen 108 extends along the X-axis. The left folding plate 112 and the third guide platen 108 are integrally formed.

[0133] The first glue spraying mechanism 79 includes a first automatic sprayer located above the first glue spraying station. The first automatic glue sprayer 106 can move back and forth in the Y-axis direction. A drive assembly 15 is provided on the frame 96 to drive the first automatic glue sprayer 106 to move. When the second conveying mechanism 77 conveys the carton 6 to the first glue spraying station, the first automatic glue sprayer 106 moves back and forth to spray glue on the outer surface of the inner top cover 109 of the carton 6 folded inward to a horizontal position. The glue spraying station is located between the first folding station and the second folding station. During the glue spraying process, the third guide plate 108 presses the inner top cover 109 on both sides of the carton 6. The first automatic sprayer is an existing automatic glue spraying device.

[0134] Preferably, the driving component fifteen is a rodless cylinder 107 fixed on the frame 96, and the number of the first automatic sprayers is two, the two first automatic sprayers respectively correspond to the two inner top covers 109 of the carton 6, and the two first automatic sprayers are fixed on both sides of the displacement block of the rodless cylinder 107.

[0135] Figure 15 As shown, when the gluing of the carton 6 is completed, the second conveying mechanism 77 conveys the carton 6 to the second folding station. The outer top cover folding mechanism 80 includes two outer top cover folding assemblies arranged front and back above the second folding station. The outer top cover folding assembly includes a folding roller 120, a third swing arm 117, a mounting frame 122 capable of moving in the Y-axis direction, and a driver for driving the mounting frame 122 to move. The third swing arm 117 is rotatably connected to the mounting frame 122 and can swing up and down relative to the mounting frame 122. The two folding rollers 120 are respectively mounted on the two third swing arms. At the opposite end of the arm 117, an elastic member is provided between the third swing arm 117 and the mounting frame 122 to provide a reset force for the third swing arm 117. When the carton 6 with the inner top cover 109 glued is transported to the second folding station, the folding rollers 120 on both sides move toward the middle and contact the folding portion 116 of the outer top cover 119 of the carton 6. The folding portion 116 pushes the folding roller 120 to make the folding roller 120 swing upward from above the folding portion 116 through the outer top covers 119 on both sides and fold inward to a horizontal position, so that the outer top cover 119 and the inner top cover 109 are glued.

[0136] Preferably, the driver 1 is a cylinder 13 121 fixed on the frame 96, the piston rod of the cylinder 13 121 telescopically moves in the Y-axis direction, and the mounting frame 122 is fixed on the piston rod of the cylinder 13 121.

[0137] Preferably, the middle part of the third swing arm 117 is rotatably connected to the mounting bracket 122, the elastic member is a tension spring 118, one end of the tension spring 118 is connected to the mounting bracket 122, the other end of the tension spring 118 is connected to the rear end of the third swing arm 117, and the folding roller 120 is installed at the front end of the third swing arm 117.

[0138] The second conveying mechanism 77 conveys the carton 6 to the second folding station for folding, and the piston rods of the cylinders thirteen 121 on both sides extend toward the middle, so that the folding rollers 120 on both sides move toward the middle. During the movement, the folding rollers 120 contact the folding part 116 of the outer top cover 119 of the carton 6 on the same side. When in contact, the folding roller 120 can be pushed upward by the folding part 116 to float upward, so that the folding roller 120 moves to the top of the folding part 116. The folding roller 120 provides a reset force to the third swing arm 117 from above the folding part 116 through the rear tension spring 118, pulling the rear end of the third swing arm 117 to swing upward, so that the front end of the swing arm connected to the folding roller 120 swings down and resets to the initial position, so that the folding roller 120 folds the outer top cover 119 of the carton 6 inward to a horizontal position during the movement toward the middle, and the outer top cover 119 is pressed on the inner top cover 109 below and is glued to the inner top cover 109. In the initial position, the height of the bottom of the folding drum 120 matches the height of the top of the carton 6 .

[0139] The folding roller 120 avoids hard contact with the folding portion 116 by floating up and down after contacting the outer top crease portion 116, preventing the folding roller 120 from pushing hard and squeezing the carton 6 to deform or break it, and the folding roller 120 rolls when contacting the outer top cover 119, thereby better pressing the outer top cover 119 internally.

[0140] In addition, two positioning pressure plates 105 are provided above the second folding station, which are connected to the third guide pressure plate 108. The length extension direction of the two positioning pressure plates 105 is consistent with the conveying direction of the carton 6, that is, they are arranged horizontally in the X-axis direction. The two positioning pressure plates 105 are parallel to each other and perpendicular to the moving direction of the mounting frame 122. When the carton 6 after the inner top cover 109 is glued is conveyed to the second folding station, the two positioning pressure plates 105 extend between the front and rear outer top covers 119 of the carton 6. The height of the positioning pressure plates 105 is adapted to the height of the carton 6 placed on the second folding station, and the distance between the outer edges of the positioning pressure plates 105 is adapted to the distance between the inner sides of the folding parts 116 of the two outer top covers 119 of the carton 6, to ensure that when the two folding rollers 120 move toward the middle to push the outer top cover 119 for folding, the front and rear side walls of the carton 6 are not easily skewed.

[0141] Preferably, there are two third guide pressing plates 108 , and the two positioning pressing plates 105 are respectively connected to one end of the two third guide pressing plates 108 close to the second folding station.

[0142] A limiting portion for limiting the maximum downward swing angle of the third swing arm 117 is provided on the mounting frame 122 .

[0143] Preferably, the mounting frame 122 has a limiting step 123 located above the third swing arm 117, and there is a distance between the limiting step 123 and the third swing arm 117 for the third swing arm 117 to swing up and down. When the third swing arm 117 swings up or down, the limiting step 123 can contact the third swing arm 117 to limit the maximum upward swing angle and the maximum downward swing angle of the third swing arm 117.

[0144] The output end of the second folding station is connected to two fourth guide plates 124 arranged left and right in the X-axis direction. The fourth guide plates 124 extend to the top of the ear folding station. The height of the two fourth guide plates 124 to the second material channel 82 is adapted to the height of the carton 6 placed in the second material channel 82. When the carton 6 with the outer top cover 119 folded inward is conveyed to the bottom of the two fourth guide plates 124, the fourth guide plates 124 respectively contact and press on the outer top covers 119 folded inward on both sides of the carton 6. The ends of the two fourth guide plates 124 that connect to the second folding station are provided with flared openings to facilitate the movement of the carton 6 to the bottom of the two fourth guide plates 124.

[0145] Figure 16 As shown, the ear folding mechanism 81 includes a rear folding ear component 126 for folding the ear plate 127 on the rear outer top cover 119 of the carton 6 inward, and a front folding ear component 125 for folding the ear plate 127 on the front outer top cover 119 of the carton 6 inward. The front folding ear component 125 and the rear folding ear component 126 are arranged in sequence along the second material channel 82.

[0146] The front folding ear assembly 125 includes an L-shaped front folding ear frame 130 located at the first ear folding station, a second driver for driving the front folding ear frame 130 to rise and fall, and a third driver for driving the front folding ear frame 130 to move forward and backward in the Y-axis direction. When the capped carton 6 is transported to the first ear folding station, the second driver drives the front folding ear frame 130 to move downward and contact the ear plate 127 extending horizontally from the front outer top cover 119 of the carton 6 below. The front folding ear frame 130 presses down the ear plate 127 to fold the ear plate 127 downward to a vertical position, and then the third driver drives the front folding ear frame 130 to move forward and horizontally to support the ear plate 127 folded to a vertical position inward, so that the ear plate 127 can be wrapped around the outside of the front handle of the cylinder in the carton 6.

[0147] Preferably, the second driver is a cylinder fourteen 128 fixed on the frame 96, the third driver is a cylinder fifteen 129 fixedly connected to the piston rod of the cylinder fourteen 128, and the front folding frame is fixed to the end of the piston rod of the cylinder fifteen 129.

[0148] The rear folding ear assembly 126 includes an L-shaped rear folding ear frame 133 located at the second ear folding station, a driver four for driving the rear folding ear frame 133 to rise and fall, and a driver five for driving the rear folding ear frame 133 to move forward and backward in the Y-axis direction. When the capped carton 6 is transported to the second ear folding station, the driver four drives the rear folding ear frame 133 to move downward and contact the ear plate 127 extending horizontally from the rear outer top cover 119 of the lower carton 6. The rear folding ear frame 133 presses down the ear plate 127 to fold the ear plate 127 downward to vertical, and then the driver five drives the rear folding ear frame 133 to move horizontally backward to support the ear plate 127 folded to vertical inward, so that the ear plate 127 can be wrapped around the outside of the rear handle of the cylinder in the carton 6. Driver four is cylinder seventeen 131 fixed on the frame 96, driver five is cylinder eighteen 43 fixed on the piston rod of cylinder seventeen 131, and the rear folding ear frame 133 is connected to the piston rod of cylinder eighteen 43.

[0149] The second conveying mechanism 77 conveys the carton 6 after the ear plates 127 on both sides are folded inward to the carton grabbing position, where a robot 5 is provided. The robot 5 grabs the carton 6 containing the cylinders for palletizing.

[0150] In addition, the second limiting frame 75 is provided with positioning baffles 90 corresponding to each level of workstations. The positioning baffles 90 on the same side are connected to the connecting frame 98 arranged in the same X-axis direction. The connecting frame 98 is connected to the cylinder sixteen 99 and is driven by the cylinder sixteen 99 to move in the Y-axis direction. The positioning baffles 90 move back and forth to block or release the cartons 6 transported on the second material channel 82. The positioning baffles 90 are used to position the cartons 6 at the corresponding workstations.

[0151] A non-powered roller line 95 for supporting the cartons 6 is provided at the bottom of the second material channel 82 .

[0152] All of the above suction cups are pneumatic suction cups.

[0153] The method for unpacking and bottling a steel cylinder packaging machine comprises the following steps: S1, the driving mechanism 2 drives the box grabbing sucker 21 to descend and lift the uppermost box plate 25 horizontally stacked on the lifting rack 17 upward;

[0154] S2, drive assembly 1 drives the conveyor frame 23 to move leftward, so that the material receiving end of the conveyor frame 23 moves to the material receiving position below the box grabbing suction cup 21, and the box grabbing suction cup 21 releases the box plate 25 sucked by it, so that the box plate 25 falls to the material receiving end of the conveyor frame 23, completing the material receiving. Drive assembly 1 drives the conveyor frame 23 to move back to the right, and pushes the box plate 25 received at the material receiving end into the first material channel through the fixed pushing frame 24 and conveys it to the right;

[0155] S3, the first conveying mechanism 11 conveys the flat box plate 25 to the unpacking station, and the unpacking mechanism 29 opens the box plate 25 at the unpacking station to form the carton 6 and place it on its side on the unpacking station, completing the unpacking and forming of the carton 6;

[0156] S4, the inner bottom cover folding mechanism 28 folds the inner bottom covers 34 on both sides of the carton 6 after unpacking and forming inward;

[0157] S5, the outer bottom cover folding mechanism 13 folds the outer bottom covers 35 on both sides of the carton 6 inward, so that the outer bottom covers 35 on both sides are pressed against the outer sides of the inner bottom covers 34 that are folded inward on both sides, thereby sealing the bottom of the carton 6;

[0158] S6: The first conveying mechanism 11 conveys the carton 6 with the bottom cover folded to the bottom sealing station. The carton 6 is moved between the upper and lower clamping belts 41 and conveyed to the right by the clamping belts 41. The tape applicator 42 applies tape to the center of the bottom of the carton 6 conveyed by the clamping belts 41, completing the bottom sealing.

[0159] S7, the clamping belt 41 conveys the carton 6 with the sealed bottom to above the input end of the first conveyor belt 46. At this time, the first guide rod 44 is supported on the side of the carton 6 near the top and the bottom side of the carton 6 is suspended in the air. The bottom side of the carton 6 flips downward due to its own gravity, so that the carton 6 falls upright with the bottom facing downward on the first conveyor belt 46, completing the flipping of the carton 6 from lying on its side to be placed upright with the bottom facing downward.

[0160] S8, the first conveyor belt 46 conveys the upright carton 6 to the output end connected to the second material channel 82, so that the carton 6 enters the second material channel 82 and is conveyed by the second conveying mechanism 77;

[0161] S9, the second conveying mechanism 77 conveys the carton 6 to the packing station, and the material grabbing and packing mechanism 76 picks up the cylinders conveyed by the cylinder conveyor belt 74 to one side of the packing station and packs them into the carton 6 at the packing station;

[0162] S10, the second conveying mechanism 77 conveys the bottled carton 6 to the first folding station, and the inner top cover folding mechanism 78 folds the inner top covers 109 on both sides of the carton 6 at the first folding station inward;

[0163] S11, the second conveying mechanism 77 conveys the carton 6 with the inner top cover 109 folded over to the first gluing station, and the first gluing mechanism 79 glues the inner top cover 109 folded over on both sides of the carton 6 at the first gluing station;

[0164] S12, the second conveying mechanism 77 conveys the glued carton 6 to the second folding station, and the outer top cover folding mechanism 80 folds the outer top covers 119 on both sides of the carton 6 at the second folding station inward and stretches them open, so that the outer top covers 119 are glued and fixed to the inner top covers 109 after being folded inward;

[0165] S13, the second conveying mechanism 77 conveys the carton 6 after the outer top covers 119 on both sides are folded inward to the ear folding station, and the ear inward folding mechanism 81 folds the ear plates 127 on both sides of the top of the carton 6 at the ear folding station inward, so that the ear plates 127 are wrapped around the outside of the handles on both sides of the cylinder, completing the bottom sealing of the carton 6.

[0166] The above describes the steel cylinder packaging machine and the method for unpacking and bottling provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art will be able to make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims.

Claims

1. Steel cylinder packaging machine, characterized in that, The machine comprises a frame on which a carton feeding device, a carton opening and bottom sealing device, a carton turning device and a carton filling and top sealing device are arranged. The input end and the output end of the carton turning device are respectively connected with the output end of the carton opening and bottom sealing device and the input end of the carton filling and top sealing device. The carton feeding device is arranged at the input end of the carton opening and bottom sealing device. The carton loading device includes a lifting rack that can be raised and lowered, a driving mechanism 1 for driving the lifting rack to be raised and lowered, a lifting box grabbing suction cup that can be raised and lowered, and a driving mechanism 2 for driving the lifting box grabbing suction cup to be raised and lowered. The sheet-like box boards to be unpacked are stacked horizontally on the lifting rack. The box grabbing suction cup is located above the lifting rack and is used to lift the box boards upward for loading. The box opening and bottom sealing device comprises a box opening mechanism, an inner bottom cover folding mechanism, an outer bottom cover folding mechanism, a bottom sealing mechanism, a first material channel for limiting the conveying of the carton in a straight line, and a first conveying mechanism for conveying the carton in the first material channel. The inner bottom cover folding mechanism, the outer bottom cover folding mechanism, and the bottom sealing mechanism are sequentially arranged along the first material channel. The first conveying mechanism comprises a conveying frame capable of moving horizontally left and right and a driving component 1 for intermittently driving the conveying frame to move horizontally. The conveying frame is lower than the first material channel, and the conveying frame can move left to the bottom of the box grabbing suction cup to receive the box plate lifted by the box grabbing suction cup and convey it to the right. The conveying frame is provided with a fixed pushing frame for pushing the received box plate into the first material channel and conveying it to the box opening station, and a plurality of movable pushing frames for pushing the carton in the first material channel to move right. The movable pushing frame can swing up and down relative to the conveying frame, so that the movable pushing frame can be changed between a horizontal folding state and a vertical pushing state. The conveying frame is provided with a driving component 2 for driving the movable pushing frame to swing. When the conveying frame moves left When the material is connected, the movable push frame is in a folded state and moves from the bottom of the carton to the left side of the carton. When the conveyor frame moves back to the right, the movable push frame changes to a pushing state to push the carton to the right. The unpacking mechanism is provided at the unpacking station. The unpacking mechanism is used to transport the conveyor frame to the box board at the unpacking station, open the box board so that the formed carton is placed on its side at the unpacking station. The inner bottom cover folding mechanism is used to fold the inner bottom covers on both sides of the formed carton inward, and the outer bottom cover folding mechanism is used to fold the outer bottom covers on both sides of the formed carton inward. Folding, so that the outer bottom cover is pressed against the outer side of the inner bottom cover after folding inward, the bottom sealing mechanism is arranged at the bottom sealing station, and the bottom sealing mechanism includes a clamping belt group and a tape applicator, the tape applicator is located at the bottom sealing station near the bottom of the carton lying on its side, the clamping belt group includes clamping belts located at the upper and lower sides of the bottom sealing station respectively, the clamping belts running on the plane drive the carton to move to the right by contacting the box walls on the upper and lower sides of the carton, so that the tape applicator sticks the tape on the center of the bottom of the carton with the bottom cover folded over. The carton turning device comprises a first guide rod, a carton baffle plate and a first conveyor belt for conveying and moving the carton, the input end of the first conveyor belt is connected to the output end of the first material channel, and the first conveyor belt is lower than the first material channel, the first guide rod is arranged in the middle of the output end of the first material channel, biased towards the top of the carton, the first guide rod extends above the first conveyor belt, and the extension direction of the first guide rod is consistent with the conveying direction of the clamping belt. When the clamping belt conveys the carton with the bottom sealed from the first material channel to the top of the first conveyor belt, the first guide rod is supported on the side below the carton near the top and the bottom side of the carton is suspended, the bottom side of the carton is flipped downward by its own gravity so that the bottom of the carton falls upright on the first conveyor belt. The carton baffle plate is arranged on the side of the output end of the first material channel near the bottom of the carton, and an opening is provided between the carton baffle plate and the first guide rod for the bottom side of the carton to flip down and fall, and the carton baffle plate is used to prevent the carton from flipping to the flipping side when the carton is flipped and upright. The box packing and capping device includes a cylinder conveyor belt, a material grabbing and boxing mechanism, an inner top cover folding mechanism, a first glue spraying mechanism, an outer top cover folding mechanism, a hanging ear inward folding mechanism, a second material channel for limiting the transportation of cartons in a straight line, and a second conveying mechanism for conveying cartons moving in the second material channel. The output end of the first conveyor belt is connected to the input end of the second material channel. The material grabbing and box packing mechanism, the inner top cover folding mechanism, the first glue spraying mechanism, the outer top cover folding mechanism, and the hanging ear inward folding mechanism are arranged in sequence along the second material channel. The second conveying mechanism includes a conveying chain arranged on both sides of the second material channel. The conveying chain is connected to the drive component three and is intermittently driven by the drive component three. A number of evenly distributed box pushing plates are provided on the conveying chain. The box pushing plates are used to push the cartons on the second material channel. The outer top cover folding mechanism is used to push the push box board to the second folding station, where the outer top covers on both sides of the carton are folded inwardly so that the outer top covers are glued and fixed to the inner top covers folded inwardly. The ear inward folding mechanism is used to fold and stretch the ear plates on both sides of the top of the carton when the push box board is pushed to the ear folding station, so that the ear plates are wrapped around the outer sides of the cylinder handles. The ear folding mechanism includes a rear ear assembly for folding the ear plate on the rear outer top cover of the carton inwardly and a front ear assembly for folding the ear plate on the front outer top cover of the carton inwardly, and the front ear assembly and the rear ear assembly are arranged in sequence along the second material channel. The front folding ear assembly includes an L-shaped front folding ear frame located at the first folding ear station, a second driver for driving the front folding ear frame to rise and fall, and a third driver for driving the front folding ear frame to move forward and backward. When the carton with the cap is delivered to the first folding ear station, the second driver drives the front folding ear frame to move downward to fold down the ear plate on the front outer top cover, and the third driver drives the front folding frame to move forward and horizontally to support the folded ear plate inward so that the ear plate is wrapped around the outside of the cylinder handle. The rear folding ear assembly includes an L-shaped rear folding ear frame located at the second ear folding station, a driver four for driving the rear folding ear frame to rise and fall, and a driver five for driving the rear folding ear frame to move forward and backward. When the carton after capping is transported to the second ear folding station, the driver four drives the rear folding ear frame to move downward to fold down the ear plate on the rear outer top cover, and the driver five drives the rear folding frame to move horizontally backward to support the folded ear plate inward so that the ear plate is wrapped around the outside of the cylinder handle.

2. The steel bottle packaging machine according to claim 1, characterized in that: The length extension direction of the first material channel is parallel to the length extension direction of the second material channel, and the conveying direction of the first conveyor belt is perpendicular to the length extension direction of the first material channel. The first material channel is formed by connecting two sections of different widths, the first and second material channels, the width of the first material channel is greater than the width of the second material channel, the width of the first material channel is adapted to the width of the carton when it is placed on its side with the bottom cover not folded, and the width of the second material channel is adapted to the width of the carton when it is placed on its side with the bottom cover fully folded inward. The first material channel includes two first limiting frames arranged in front and behind, and a space for placing cartons is formed between the two first limiting frames. The width of the first material channel can be adjusted by moving the two first limiting frames. The second material channel includes two second limiting frames arranged in front and back, and a space for placing cartons is formed between the two second limiting frames. The width of the second material channel can be adjusted by moving the two second limiting frames. The conveyor chains on both sides of the second material channel and the driving components three for driving the conveyor chains are respectively arranged on the second limiting frames on both sides; The output end of the first conveyor belt is provided with a first box stopper fixed on a second limit frame on one side, and the surface of the first box stopper used to contact the carton is flush with the inner wall of one side of the second material channel. The output end of the first conveyor belt is provided with a first box pushing member that can move left and right and a driving component four that drives the first box pushing member to move. When the first conveyor belt flips the vertically placed carton to the output end position, the carton rests on the first box stopper, and the first box pushing member pushes the carton resting on the first box stopper into the second material channel.

3. The steel bottle packaging machine according to claim 1, characterized in that: The carton loading device also includes alignment plates located on both sides of the lifting rack and a driving assembly 16 for driving the alignment plates to move. The two alignment plates can be synchronously moved toward the middle or moved toward both sides to separate. The two alignment plates move toward the middle to push the carton plate on the middle lifting rack to the center. A movable first support plate and a drive assembly five are installed on the alignment plate. The drive assembly five is connected to the first support plate to drive the first support plate to move horizontally to the middle to the bottom of the box plate for supporting the box plate.

4. The steel bottle packaging machine according to claim 1, characterized in that: The second glue spraying mechanism is provided between the inner bottom cover folding mechanism and the outer bottom cover folding mechanism, and when the carton after the inner bottom cover is folded inward is transported to the outer bottom cover folding mechanism by the conveying rack, the carton moves past one side of the second glue spraying mechanism, and the glue spraying port of the second glue spraying mechanism is opposite to the bottom of the passing carton, and glue is sprayed on the inner bottom covers after folding inward on the left and right sides of the carton as the carton moves so that the outer bottom covers are glued to the inner bottom covers when they are folded inward, and the second glue spraying mechanism includes two second automatic glue sprayers distributed up and down, and the two groups of second automatic glue sprayers are opposite to the parts of the inner bottom cover of the carton that are used to contact the outer bottom covers on the upper and lower sides, and a first guide pressing plate is provided between the inner bottom cover folding mechanism and the outer bottom cover folding mechanism, and the horizontal distance from the first guide pressing plate to the inner wall of the first material channel near the top of the carton is adapted to the horizontal distance from the bottom of the carton side to the inner wall of the first material channel near the top of the carton, and the first guide pressing plate is used to press the inner bottom covers on the left and right sides of the carton to fit with the bottom and guide them to the outer bottom cover folding mechanism, A gluing mechanism located at the gluing station is provided between the bottom sealing mechanism and the outer bottom cover folding mechanism. The gluing mechanism is docked with the outer bottom cover folding mechanism. The gluing mechanism includes abutment plates and a first pressing plate relatively arranged on both sides of the first material channel. The first pressing plate is connected to the driving component six and is driven by the driving component six to move back and forth in a straight line. When the carton after the inner bottom cover and the outer bottom cover are glued is transported to the gluing station by the conveying rack, the driving component six drives the first pressing plate to move into the carton from the side opening of the carton, so that the first pressing plate presses the bottom of the glued carton onto the abutment plate. A second guide pressure plate is provided between the abutment plate and the tape applicator, and the second guide pressure plate is provided with a plurality of guide rollers along the length direction for contacting the middle of the bottom of the carton, and the horizontal distance from the contact part of the guide roller to the inner wall of the first material channel close to the top of the carton is adapted to the horizontal distance from the bottom of the carton side to the inner wall of the first material channel close to the top of the carton, and the second guide pressure plate is used to guide the glued carton from the gluing station to the bottom sealing station.

5. The steel bottle packaging machine according to claim 4, characterized in that: The gluing mechanism also includes two plywoods located above the gluing station and capable of being raised and lowered. The clamping surfaces of the two plywoods are arranged vertically and parallel to each other. There is a clamping opening between the two plywoods for the carton to enter. The two plywoods are connected to the driving component seven. The driving component seven drives the two plywoods down so that the two plywoods are clamped on both sides of the carton at the gluing station. The two plywoods keep the box walls on both sides of the carton vertical.

6. The steel bottle packaging machine according to claim 4, characterized in that: The lifting mechanism comprises a first swing arm, a second swing arm, a lower suction cup located below the unpacking station, an upper suction cup located above the unpacking station, a suction cup frame and a driving component 8. The lower suction cup can be lifted up and down relative to the frame, and a driving component 9 is provided on the frame to drive the lower suction cup to lift and lower. One end of the first swing arm is connected to the driving component 8 and is driven by the driving component 8 to swing up and down, and the other end of the first swing arm is rotatably connected to the suction cup frame. One end of the second swing arm is rotatably connected to the frame, and the other end of the second swing arm is rotatably connected to the suction cup frame. The first swing arm is parallel to the second swing arm, and the upper suction cup is fixed on the suction cup frame. During the up and down movement of the suction cup frame, the adsorption surface of the upper suction cup is always facing downward. When the box plate is transported to the unpacking station by the conveying frame, the lower suction cup attracts one side of the box surface below the box plate, and the upper suction cup moves downward to attract the upper part of the box plate and pulls up one side of the box surface above the box plate, so that the formed carton is placed on its side on the material channel. The inner bottom cover folding mechanism includes a first folding member and a first folding plate located on the left and right sides of the unpacking station, the first folding member can move horizontally and obliquely relative to the frame to push the inner bottom cover on the left side of the carton at the unpacking station to fold inward, the frame is provided with a driving component 10 that drives the first folding member to move, the horizontal distance between the first folding plate and the bottom of the carton located in the first material channel gradually becomes smaller, the first folding plate is used to guide the inner bottom cover on the right side of the carton to fold inward when the carton at the unpacking station is conveyed to the right, the left and right sides of the first folding plate are respectively connected to the first folding member and the first guide pressure plate, The outer bottom cover folding mechanism includes two symmetrically arranged folding rods, one end of the two folding rods is connected to the first guide pressure plate, and the other end of the two folding rods is connected to the abutment plate. The two folding rods gradually move closer to each other toward the middle, and the horizontal distance between the two folding rods and the bottom of the carton located in the first material channel gradually decreases. There is an entrance between the ends of the two folding rods connected to the first guide pressure plate for the outer bottom covers on both sides of the bottom of the carton to enter. When the carton is transported from the first guide pressure plate to the gluing station, the outer bottom covers on the upper and lower sides of the bottom of the carton move from the entrance into between the two folding rods and contact the upper and lower folding rods, and as the distance between the upper and lower folding rods and the bottom of the carton becomes smaller, the upper and lower outer bottom covers are folded over to fit the bottom of the carton, and the outer bottom cover is pressed on the outside of the inner bottom cover after folding inward and glued to the inner bottom cover to seal the bottom of the carton.

7. The steel bottle packaging machine according to claim 2, characterized in that: At least one side of the first conveyor belt is provided with a second box stopper located at a waiting position. The second box stopper can move horizontally. The second box stopper is connected to the drive component eleven. The drive component eleven drives the second box stopper to move laterally to block or release the cartons transported by the first conveyor belt. The released cartons are transported from the waiting position to a position against the first box stopper.

8. The steel bottle packaging machine according to claim 2, characterized in that: The material grabbing and boxing mechanism includes a rotating frame and a lifting frame installed on the rotating frame. The rotating frame is connected to a driving assembly 12 and is driven to rotate by the driving assembly 12. The lifting frame can be lifted and lowered relative to the rotating frame. The rotating frame is provided with a driving assembly 13 for driving the lifting frame to lift. Both sides of the lifting frame are provided with clamping members that can be opened and closed. The clamping members on both sides alternately clamp the steel cylinders transported on the steel cylinder conveyor belt and load them into cartons at the boxing station. The inner top cover folding mechanism includes a left folding plate and a right folding plate located above the first folding station. The right folding plate can swing up and down. A driving assembly 14 is provided on the frame to drive the right folding plate to swing. The right end of the left folding plate has a bevel for guiding the inner top cover on the left side of the carton to fold inward. The distance between the bevel and the bottom of the second material channel in the vertical direction gradually decreases. When the carton is transported to the first folding station by the conveyor chain, the inner top cover on the left side of the carton top contacts the bevel, so that the left side The inner top cover of the carton is folded inwardly, and the right folding plate swings downwardly and contacts the inner top cover on the right side of the carton, so that the inner top cover on the right side is folded inwardly, and a third guide pressing plate is provided between the first folding station and the second folding station. The third guide pressing plate is connected to the left folding plate. The bottom of the third guide pressing plate is used to touch the bottom edge of the inner top cover of the carton. The height is adapted to the height of the carton placed in the second material channel, so that it can press the left and right inner top covers of the carton to a horizontal level and guide them from the first folding station to the second folding station. The first glue spraying mechanism includes a first automatic glue sprayer located above the first glue spraying station. The first automatic glue sprayer can move forward and backward. A driving assembly 15 is provided on the frame to drive the first automatic glue sprayer to move. When the carton is transported to the first glue spraying station by the conveyor chain, the first automatic glue sprayer moves forward and backward to spray glue on the outer surface of the inner top cover of the carton that is folded inward to a horizontal position. The outer top cover folding mechanism includes two outer top cover folding assemblies which are relatively arranged above the second folding station in a front and rear direction. The outer top cover folding assembly includes a folding roller, a third swing arm, a mounting frame which can move horizontally and linearly back and forth, and a driver 1 which drives the mounting frame to move. The third swing arm is rotatably connected to the mounting frame and can swing up and down relative to the mounting frame. The two folding rollers are respectively mounted on the opposite ends of the two third swing arms. An elastic member is provided between the third swing arm and the mounting frame to provide a reset force for the third swing arm. When the carton after the inner top cover is glued is transported to the second folding station, the folding rollers on both sides move toward the middle and contact the folding part of the outer top cover of the carton. The folding part pushes the folding rollers to make the folding rollers swing upward and pass through the folding part to fold the outer top covers on both sides inward to a horizontal position, so that the outer top cover and the inner top cover are glued. Two positioning plates connected to the third guide plate are provided above the second folding station. The length extension direction of the two positioning plates is consistent with the conveying direction of the carton. The two positioning plates are parallel to each other and perpendicular to the moving direction of the mounting frame. When the carton after the inner top cover is glued is conveyed to the second folding station, the two positioning plates extend between the front and rear outer top covers of the carton. The height of the positioning plates is adapted to the height of the carton placed on the second folding station, and the distance between the outer edges of the positioning plates is adapted to the distance between the inner sides of the folding parts of the two outer top covers of the carton. The output end of the second folding station is connected to two fourth guide pressure plates arranged in front and behind. The fourth guide pressure plates extend above the ear folding station. The height of the two fourth guide pressure plates to the second material channel is adapted to the height of the cartons placed in the second material channel. When the carton with the outer top cover folded inward is transported to the bottom of the two fourth guide pressure plates, the fourth guide pressure plates respectively touch and press the outer top covers on both sides of the carton that have been folded inward.

9. A method for unpacking and bottling a steel cylinder using the steel cylinder packaging machine according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, the second driving mechanism drives the box grabbing suction cup to descend and lift the top box board horizontally stacked on the lifting rack upwards; S2, drive assembly 1 drives the conveyor frame to move to the left, so that the material receiving end of the conveyor frame moves to the material receiving position below the box grabbing suction cup, and the box grabbing suction cup releases the box plate sucked by it, so that the box plate falls to the material receiving end of the conveyor frame, completing the material receiving. Drive assembly 1 drives the conveyor frame to move back to the right, and pushes the box plate received by the material receiving end into the first material channel through the fixed push frame and conveys it to the right; S3, the first conveying mechanism conveys the flat box plate to the unpacking station, and the unpacking mechanism opens the box plate at the unpacking station so that the formed carton is placed on its side on the unpacking station, completing the unpacking and forming of the carton; S4, the inner bottom cover folding mechanism folds the inner bottom covers on both sides of the carton after unpacking and forming inward; S5, the outer bottom cover folding mechanism folds the outer bottom covers on both sides of the carton after the carton is opened and formed inward, so that the outer bottom covers on both sides are pressed onto the outside of the inner bottom covers after the two sides are folded inward, thereby sealing the bottom of the carton; S6: The first conveyor mechanism conveys the carton with the bottom cover folded to the bottom sealing station. The carton is moved between the upper and lower clamping belts and conveyed to the right by the clamping belts. The tape applicator applies tape to the center of the bottom of the carton conveyed by the clamping belts, completing the bottom sealing. S7: The clamping belt conveys the carton with the sealed bottom to above the input end of the first conveyor belt. At this time, the first guide rod is supported on the side of the carton near the top and the bottom side of the carton is suspended in the air. The bottom side of the carton flips downward due to its own gravity, so that the carton falls upright with the bottom facing downward on the first conveyor belt, completing the flipping of the carton from lying on its side to being placed upright with the bottom facing downward. S8, the first conveyor belt conveys the upright cartons to the output end connected to the second material channel, so that the cartons enter the second material channel and are conveyed by the second conveying mechanism; S9, the second conveying mechanism conveys the carton to the packing station, and the grabbing and packing mechanism picks up the cylinders conveyed by the cylinder conveyor belt to one side of the packing station and packs them into the carton at the packing station; S10, the second conveying mechanism conveys the bottled carton to the first folding station, and the inner top cover folding mechanism folds the inner top covers on both sides of the carton at the first folding station inward; S11, the second conveying mechanism conveys the carton with the inner top cover folded to the first gluing station, and the first gluing mechanism glues the inner top cover folded on both sides of the carton at the first gluing station until it is horizontal; S12, the second conveying mechanism conveys the glued carton to the second folding station, and the outer top cover folding mechanism folds the outer top covers on both sides of the carton at the second folding station inward, so that the outer top covers are glued and fixed to the folded inner top covers; S13, the second conveying mechanism conveys the carton with the outer top covers on both sides folded inward to the ear folding station, and the ear folding mechanism folds the ear plates on both sides of the top of the carton at the ear folding station inward and stretches them out, so that the ear plates are wrapped around the outside of the handles on both sides of the cylinder, completing the bottom sealing of the carton.

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